staging: ti dspbridge: add resource manager

Add TI's DSP Bridge resource manager driver sources
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Kanigeri, Hari <h-kanigeri2@ti.com>
Signed-off-by: Ameya Palande <ameya.palande@nokia.com>
Signed-off-by: Guzman Lugo, Fernando <fernando.lugo@ti.com>
Signed-off-by: Hebbar, Shivananda <x0hebbar@ti.com>
Signed-off-by: Ramos Falcon, Ernesto <ernesto@ti.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Anna, Suman <s-anna@ti.com>
Signed-off-by: Gupta, Ramesh <grgupta@ti.com>
Signed-off-by: Gomez Castellanos, Ivan <ivan.gomez@ti.com>
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: Armando Uribe De Leon <x0095078@ti.com>
Signed-off-by: Deepak Chitriki <deepak.chitriki@ti.com>
Signed-off-by: Menon, Nishanth <nm@ti.com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/tidspbridge/rmgr/dbdcd.c

+/*
+ * dbdcd.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * This file contains the implementation of the DSP/BIOS Bridge
+ * Configuration Database (DCD).
+ *
+ * Notes:
+ *   The fxn dcd_get_objects can apply a callback fxn to each DCD object
+ *   that is located in a specified COFF file.  At the moment,
+ *   dcd_auto_register, dcd_auto_unregister, and NLDR module all use
+ *   dcd_get_objects.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/cod.h>
+
+/*  ----------------------------------- Others */
+#include <dspbridge/uuidutil.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/dbdcd.h>
+
+/*  ----------------------------------- Global defines. */
+#define MAX_INT2CHAR_LENGTH     16	/* Max int2char len of 32 bit int */
+
+/* Name of section containing dependent libraries */
+#define DEPLIBSECT		".dspbridge_deplibs"
+
+/* DCD specific structures. */
+struct dcd_manager {
+	struct cod_manager *cod_mgr;	/* Handle to COD manager object. */
+};
+
+/*  Pointer to the registry support key */
+static struct list_head reg_key_list;
+static DEFINE_SPINLOCK(dbdcd_lock);
+
+/* Global reference variables. */
+static u32 refs;
+static u32 enum_refs;
+
+/* Helper function prototypes. */
+static s32 atoi(char *psz_buf);
+static int get_attrs_from_buf(char *psz_buf, u32 ul_buf_size,
+				     enum dsp_dcdobjtype obj_type,
+				     struct dcd_genericobj *pGenObj);
+static void compress_buf(char *psz_buf, u32 ul_buf_size, s32 cCharSize);
+static char dsp_char2_gpp_char(char *pWord, s32 cDspCharSize);
+static int get_dep_lib_info(IN struct dcd_manager *hdcd_mgr,
+				   IN struct dsp_uuid *uuid_obj,
+				   IN OUT u16 *pNumLibs,
+				   OPTIONAL OUT u16 *pNumPersLibs,
+				   OPTIONAL OUT struct dsp_uuid *pDepLibUuids,
+				   OPTIONAL OUT bool *pPersistentDepLibs,
+				   IN enum nldr_phase phase);
+
+/*
+ *  ======== dcd_auto_register ========
+ *  Purpose:
+ *      Parses the supplied image and resigsters with DCD.
+ */
+int dcd_auto_register(IN struct dcd_manager *hdcd_mgr,
+			     IN char *pszCoffPath)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (hdcd_mgr)
+		status = dcd_get_objects(hdcd_mgr, pszCoffPath,
+					 (dcd_registerfxn) dcd_register_object,
+					 (void *)pszCoffPath);
+	else
+		status = -EFAULT;
+
+	return status;
+}
+
+/*
+ *  ======== dcd_auto_unregister ========
+ *  Purpose:
+ *      Parses the supplied DSP image and unresiters from DCD.
+ */
+int dcd_auto_unregister(IN struct dcd_manager *hdcd_mgr,
+			       IN char *pszCoffPath)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (hdcd_mgr)
+		status = dcd_get_objects(hdcd_mgr, pszCoffPath,
+					 (dcd_registerfxn) dcd_register_object,
+					 NULL);
+	else
+		status = -EFAULT;
+
+	return status;
+}
+
+/*
+ *  ======== dcd_create_manager ========
+ *  Purpose:
+ *      Creates DCD manager.
+ */
+int dcd_create_manager(IN char *pszZlDllName,
+			      OUT struct dcd_manager **phDcdMgr)
+{
+	struct cod_manager *cod_mgr;	/* COD manager handle */
+	struct dcd_manager *dcd_mgr_obj = NULL;	/* DCD Manager pointer */
+	int status = 0;
+
+	DBC_REQUIRE(refs >= 0);
+	DBC_REQUIRE(phDcdMgr);
+
+	status = cod_create(&cod_mgr, pszZlDllName, NULL);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Create a DCD object. */
+	dcd_mgr_obj = kzalloc(sizeof(struct dcd_manager), GFP_KERNEL);
+	if (dcd_mgr_obj != NULL) {
+		/* Fill out the object. */
+		dcd_mgr_obj->cod_mgr = cod_mgr;
+
+		/* Return handle to this DCD interface. */
+		*phDcdMgr = dcd_mgr_obj;
+	} else {
+		status = -ENOMEM;
+
+		/*
+		 * If allocation of DcdManager object failed, delete the
+		 * COD manager.
+		 */
+		cod_delete(cod_mgr);
+	}
+
+	DBC_ENSURE((DSP_SUCCEEDED(status)) ||
+			((dcd_mgr_obj == NULL) && (status == -ENOMEM)));
+
+func_end:
+	return status;
+}
+
+/*
+ *  ======== dcd_destroy_manager ========
+ *  Purpose:
+ *      Frees DCD Manager object.
+ */
+int dcd_destroy_manager(IN struct dcd_manager *hdcd_mgr)
+{
+	struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
+	int status = -EFAULT;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (hdcd_mgr) {
+		/* Delete the COD manager. */
+		cod_delete(dcd_mgr_obj->cod_mgr);
+
+		/* Deallocate a DCD manager object. */
+		kfree(dcd_mgr_obj);
+
+		status = 0;
+	}
+
+	return status;
+}
+
+/*
+ *  ======== dcd_enumerate_object ========
+ *  Purpose:
+ *      Enumerates objects in the DCD.
+ */
+int dcd_enumerate_object(IN s32 cIndex, IN enum dsp_dcdobjtype obj_type,
+				OUT struct dsp_uuid *uuid_obj)
+{
+	int status = 0;
+	char sz_reg_key[DCD_MAXPATHLENGTH];
+	char sz_value[DCD_MAXPATHLENGTH];
+	struct dsp_uuid dsp_uuid_obj;
+	char sz_obj_type[MAX_INT2CHAR_LENGTH];	/* str. rep. of obj_type. */
+	u32 dw_key_len = 0;
+	struct dcd_key_elem *dcd_key;
+	int len;
+
+	DBC_REQUIRE(refs >= 0);
+	DBC_REQUIRE(cIndex >= 0);
+	DBC_REQUIRE(uuid_obj != NULL);
+
+	if ((cIndex != 0) && (enum_refs == 0)) {
+		/*
+		 * If an enumeration is being performed on an index greater
+		 * than zero, then the current enum_refs must have been
+		 * incremented to greater than zero.
+		 */
+		status = -EIDRM;
+	} else {
+		/*
+		 * Pre-determine final key length. It's length of DCD_REGKEY +
+		 *  "_\0" + length of sz_obj_type string + terminating NULL.
+		 */
+		dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
+		DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
+
+		/* Create proper REG key; concatenate DCD_REGKEY with
+		 * obj_type. */
+		strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
+		if ((strlen(sz_reg_key) + strlen("_\0")) <
+		    DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, "_\0", 2);
+		} else {
+			status = -EPERM;
+		}
+
+		/* This snprintf is guaranteed not to exceed max size of an
+		 * integer. */
+		status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d",
+				  obj_type);
+
+		if (status == -1) {
+			status = -EPERM;
+		} else {
+			status = 0;
+			if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
+			    DCD_MAXPATHLENGTH) {
+				strncat(sz_reg_key, sz_obj_type,
+					strlen(sz_obj_type) + 1);
+			} else {
+				status = -EPERM;
+			}
+		}
+
+		if (DSP_SUCCEEDED(status)) {
+			len = strlen(sz_reg_key);
+			spin_lock(&dbdcd_lock);
+			list_for_each_entry(dcd_key, &reg_key_list, link) {
+				if (!strncmp(dcd_key->name, sz_reg_key, len)
+						&& !cIndex--) {
+					strncpy(sz_value, &dcd_key->name[len],
+					       strlen(&dcd_key->name[len]) + 1);
+						break;
+				}
+			}
+			spin_unlock(&dbdcd_lock);
+
+			if (&dcd_key->link == &reg_key_list)
+				status = -ENODATA;
+		}
+
+		if (DSP_SUCCEEDED(status)) {
+			/* Create UUID value using string retrieved from
+			 * registry. */
+			uuid_uuid_from_string(sz_value, &dsp_uuid_obj);
+
+			*uuid_obj = dsp_uuid_obj;
+
+			/* Increment enum_refs to update reference count. */
+			enum_refs++;
+
+			status = 0;
+		} else if (status == -ENODATA) {
+			/* At the end of enumeration. Reset enum_refs. */
+			enum_refs = 0;
+
+			/*
+			 * TODO: Revisit, this is not an errror case but code
+			 * expects non-zero value.
+			 */
+			status = ENODATA;
+		} else {
+			status = -EPERM;
+		}
+	}
+
+	DBC_ENSURE(uuid_obj || (status == -EPERM));
+
+	return status;
+}
+
+/*
+ *  ======== dcd_exit ========
+ *  Purpose:
+ *      Discontinue usage of the DCD module.
+ */
+void dcd_exit(void)
+{
+	struct dcd_key_elem *rv, *rv_tmp;
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+	if (refs == 0) {
+		cod_exit();
+		list_for_each_entry_safe(rv, rv_tmp, &reg_key_list, link) {
+			list_del(&rv->link);
+			kfree(rv->path);
+			kfree(rv);
+		}
+	}
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== dcd_get_dep_libs ========
+ */
+int dcd_get_dep_libs(IN struct dcd_manager *hdcd_mgr,
+			    IN struct dsp_uuid *uuid_obj,
+			    u16 numLibs, OUT struct dsp_uuid *pDepLibUuids,
+			    OUT bool *pPersistentDepLibs,
+			    IN enum nldr_phase phase)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hdcd_mgr);
+	DBC_REQUIRE(uuid_obj != NULL);
+	DBC_REQUIRE(pDepLibUuids != NULL);
+	DBC_REQUIRE(pPersistentDepLibs != NULL);
+
+	status =
+	    get_dep_lib_info(hdcd_mgr, uuid_obj, &numLibs, NULL, pDepLibUuids,
+			     pPersistentDepLibs, phase);
+
+	return status;
+}
+
+/*
+ *  ======== dcd_get_num_dep_libs ========
+ */
+int dcd_get_num_dep_libs(IN struct dcd_manager *hdcd_mgr,
+				IN struct dsp_uuid *uuid_obj,
+				OUT u16 *pNumLibs, OUT u16 *pNumPersLibs,
+				IN enum nldr_phase phase)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hdcd_mgr);
+	DBC_REQUIRE(pNumLibs != NULL);
+	DBC_REQUIRE(pNumPersLibs != NULL);
+	DBC_REQUIRE(uuid_obj != NULL);
+
+	status = get_dep_lib_info(hdcd_mgr, uuid_obj, pNumLibs, pNumPersLibs,
+				  NULL, NULL, phase);
+
+	return status;
+}
+
+/*
+ *  ======== dcd_get_object_def ========
+ *  Purpose:
+ *      Retrieves the properties of a node or processor based on the UUID and
+ *      object type.
+ */
+int dcd_get_object_def(IN struct dcd_manager *hdcd_mgr,
+			      IN struct dsp_uuid *pObjUuid,
+			      IN enum dsp_dcdobjtype obj_type,
+			      OUT struct dcd_genericobj *pObjDef)
+{
+	struct dcd_manager *dcd_mgr_obj = hdcd_mgr;	/* ptr to DCD mgr */
+	struct cod_libraryobj *lib = NULL;
+	int status = 0;
+	u32 ul_addr = 0;	/* Used by cod_get_section */
+	u32 ul_len = 0;		/* Used by cod_get_section */
+	u32 dw_buf_size;	/* Used by REG functions */
+	char sz_reg_key[DCD_MAXPATHLENGTH];
+	char *sz_uuid;		/*[MAXUUIDLEN]; */
+	struct dcd_key_elem *dcd_key = NULL;
+	char sz_sect_name[MAXUUIDLEN + 2];	/* ".[UUID]\0" */
+	char *psz_coff_buf;
+	u32 dw_key_len;		/* Len of REG key. */
+	char sz_obj_type[MAX_INT2CHAR_LENGTH];	/* str. rep. of obj_type. */
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pObjDef != NULL);
+	DBC_REQUIRE(pObjUuid != NULL);
+
+	sz_uuid = kzalloc(MAXUUIDLEN, GFP_KERNEL);
+	if (!sz_uuid) {
+		status = -ENOMEM;
+		goto func_end;
+	}
+
+	if (!hdcd_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	/* Pre-determine final key length. It's length of DCD_REGKEY +
+	 *  "_\0" + length of sz_obj_type string + terminating NULL */
+	dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
+	DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
+
+	/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
+	strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
+
+	if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
+		strncat(sz_reg_key, "_\0", 2);
+	else
+		status = -EPERM;
+
+	status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d", obj_type);
+	if (status == -1) {
+		status = -EPERM;
+	} else {
+		status = 0;
+
+		if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
+		    DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, sz_obj_type,
+				strlen(sz_obj_type) + 1);
+		} else {
+			status = -EPERM;
+		}
+
+		/* Create UUID value to set in registry. */
+		uuid_uuid_to_string(pObjUuid, sz_uuid, MAXUUIDLEN);
+
+		if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
+			strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
+		else
+			status = -EPERM;
+
+		/* Retrieve paths from the registry based on struct dsp_uuid */
+		dw_buf_size = DCD_MAXPATHLENGTH;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		spin_lock(&dbdcd_lock);
+		list_for_each_entry(dcd_key, &reg_key_list, link) {
+			if (!strncmp(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1))
+				break;
+		}
+		spin_unlock(&dbdcd_lock);
+		if (&dcd_key->link == &reg_key_list) {
+			status = -ENOKEY;
+			goto func_end;
+		}
+	}
+
+
+	/* Open COFF file. */
+	status = cod_open(dcd_mgr_obj->cod_mgr, dcd_key->path,
+							COD_NOLOAD, &lib);
+	if (DSP_FAILED(status)) {
+		status = -EACCES;
+		goto func_end;
+	}
+
+	/* Ensure sz_uuid + 1 is not greater than sizeof sz_sect_name. */
+	DBC_ASSERT((strlen(sz_uuid) + 1) < sizeof(sz_sect_name));
+
+	/* Create section name based on node UUID. A period is
+	 * pre-pended to the UUID string to form the section name.
+	 * I.e. ".24BC8D90_BB45_11d4_B756_006008BDB66F" */
+	strncpy(sz_sect_name, ".", 2);
+	strncat(sz_sect_name, sz_uuid, strlen(sz_uuid));
+
+	/* Get section information. */
+	status = cod_get_section(lib, sz_sect_name, &ul_addr, &ul_len);
+	if (DSP_FAILED(status)) {
+		status = -EACCES;
+		goto func_end;
+	}
+
+	/* Allocate zeroed buffer. */
+	psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
+#ifdef _DB_TIOMAP
+	if (strstr(dcd_key->path, "iva") == NULL) {
+		/* Locate section by objectID and read its content. */
+		status =
+		    cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
+	} else {
+		status =
+		    cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
+		dev_dbg(bridge, "%s: Skipped Byte swap for IVA!!\n", __func__);
+	}
+#else
+	status = cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
+#endif
+	if (DSP_SUCCEEDED(status)) {
+		/* Compres DSP buffer to conform to PC format. */
+		if (strstr(dcd_key->path, "iva") == NULL) {
+			compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
+		} else {
+			compress_buf(psz_coff_buf, ul_len, 1);
+			dev_dbg(bridge, "%s: Compressing IVA COFF buffer by 1 "
+				"for IVA!!\n", __func__);
+		}
+
+		/* Parse the content of the COFF buffer. */
+		status =
+		    get_attrs_from_buf(psz_coff_buf, ul_len, obj_type, pObjDef);
+		if (DSP_FAILED(status))
+			status = -EACCES;
+	} else {
+		status = -EACCES;
+	}
+
+	/* Free the previously allocated dynamic buffer. */
+	kfree(psz_coff_buf);
+func_end:
+	if (lib)
+		cod_close(lib);
+
+	kfree(sz_uuid);
+
+	return status;
+}
+
+/*
+ *  ======== dcd_get_objects ========
+ */
+int dcd_get_objects(IN struct dcd_manager *hdcd_mgr,
+			   IN char *pszCoffPath, dcd_registerfxn registerFxn,
+			   void *handle)
+{
+	struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
+	int status = 0;
+	char *psz_coff_buf;
+	char *psz_cur;
+	struct cod_libraryobj *lib = NULL;
+	u32 ul_addr = 0;	/* Used by cod_get_section */
+	u32 ul_len = 0;		/* Used by cod_get_section */
+	char seps[] = ":, ";
+	char *token = NULL;
+	struct dsp_uuid dsp_uuid_obj;
+	s32 object_type;
+
+	DBC_REQUIRE(refs > 0);
+	if (!hdcd_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	/* Open DSP coff file, don't load symbols. */
+	status = cod_open(dcd_mgr_obj->cod_mgr, pszCoffPath, COD_NOLOAD, &lib);
+	if (DSP_FAILED(status)) {
+		status = -EACCES;
+		goto func_cont;
+	}
+
+	/* Get DCD_RESIGER_SECTION section information. */
+	status = cod_get_section(lib, DCD_REGISTER_SECTION, &ul_addr, &ul_len);
+	if (DSP_FAILED(status) || !(ul_len > 0)) {
+		status = -EACCES;
+		goto func_cont;
+	}
+
+	/* Allocate zeroed buffer. */
+	psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
+#ifdef _DB_TIOMAP
+	if (strstr(pszCoffPath, "iva") == NULL) {
+		/* Locate section by objectID and read its content. */
+		status = cod_read_section(lib, DCD_REGISTER_SECTION,
+					  psz_coff_buf, ul_len);
+	} else {
+		dev_dbg(bridge, "%s: Skipped Byte swap for IVA!!\n", __func__);
+		status = cod_read_section(lib, DCD_REGISTER_SECTION,
+					  psz_coff_buf, ul_len);
+	}
+#else
+	status =
+	    cod_read_section(lib, DCD_REGISTER_SECTION, psz_coff_buf, ul_len);
+#endif
+	if (DSP_SUCCEEDED(status)) {
+		/* Compress DSP buffer to conform to PC format. */
+		if (strstr(pszCoffPath, "iva") == NULL) {
+			compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
+		} else {
+			compress_buf(psz_coff_buf, ul_len, 1);
+			dev_dbg(bridge, "%s: Compress COFF buffer with 1 word "
+				"for IVA!!\n", __func__);
+		}
+
+		/* Read from buffer and register object in buffer. */
+		psz_cur = psz_coff_buf;
+		while ((token = strsep(&psz_cur, seps)) && *token != '\0') {
+			/*  Retrieve UUID string. */
+			uuid_uuid_from_string(token, &dsp_uuid_obj);
+
+			/*  Retrieve object type */
+			token = strsep(&psz_cur, seps);
+
+			/*  Retrieve object type */
+			object_type = atoi(token);
+
+			/*
+			 *  Apply registerFxn to the found DCD object.
+			 *  Possible actions include:
+			 *
+			 *  1) Register found DCD object.
+			 *  2) Unregister found DCD object (when handle == NULL)
+			 *  3) Add overlay node.
+			 */
+			status =
+			    registerFxn(&dsp_uuid_obj, object_type, handle);
+			if (DSP_FAILED(status)) {
+				/* if error occurs, break from while loop. */
+				break;
+			}
+		}
+	} else {
+		status = -EACCES;
+	}
+
+	/* Free the previously allocated dynamic buffer. */
+	kfree(psz_coff_buf);
+func_cont:
+	if (lib)
+		cod_close(lib);
+
+func_end:
+	return status;
+}
+
+/*
+ *  ======== dcd_get_library_name ========
+ *  Purpose:
+ *      Retrieves the library name for the given UUID.
+ *
+ */
+int dcd_get_library_name(IN struct dcd_manager *hdcd_mgr,
+				IN struct dsp_uuid *uuid_obj,
+				IN OUT char *pstrLibName, IN OUT u32 * pdwSize,
+				enum nldr_phase phase, OUT bool *phase_split)
+{
+	char sz_reg_key[DCD_MAXPATHLENGTH];
+	char sz_uuid[MAXUUIDLEN];
+	u32 dw_key_len;		/* Len of REG key. */
+	char sz_obj_type[MAX_INT2CHAR_LENGTH];	/* str. rep. of obj_type. */
+	int status = 0;
+	struct dcd_key_elem *dcd_key = NULL;
+
+	DBC_REQUIRE(uuid_obj != NULL);
+	DBC_REQUIRE(pstrLibName != NULL);
+	DBC_REQUIRE(pdwSize != NULL);
+	DBC_REQUIRE(hdcd_mgr);
+
+	dev_dbg(bridge, "%s: hdcd_mgr %p, uuid_obj %p, pstrLibName %p, pdwSize "
+		"%p\n", __func__, hdcd_mgr, uuid_obj, pstrLibName, pdwSize);
+
+	/*
+	 *  Pre-determine final key length. It's length of DCD_REGKEY +
+	 *  "_\0" + length of sz_obj_type string + terminating NULL.
+	 */
+	dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
+	DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
+
+	/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
+	strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
+	if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
+		strncat(sz_reg_key, "_\0", 2);
+	else
+		status = -EPERM;
+
+	switch (phase) {
+	case NLDR_CREATE:
+		/* create phase type */
+		sprintf(sz_obj_type, "%d", DSP_DCDCREATELIBTYPE);
+		break;
+	case NLDR_EXECUTE:
+		/* execute phase type */
+		sprintf(sz_obj_type, "%d", DSP_DCDEXECUTELIBTYPE);
+		break;
+	case NLDR_DELETE:
+		/* delete phase type */
+		sprintf(sz_obj_type, "%d", DSP_DCDDELETELIBTYPE);
+		break;
+	case NLDR_NOPHASE:
+		/* known to be a dependent library */
+		sprintf(sz_obj_type, "%d", DSP_DCDLIBRARYTYPE);
+		break;
+	default:
+		status = -EINVAL;
+		DBC_ASSERT(false);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
+		    DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, sz_obj_type,
+				strlen(sz_obj_type) + 1);
+		} else {
+			status = -EPERM;
+		}
+		/* Create UUID value to find match in registry. */
+		uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
+		if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
+			strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
+		else
+			status = -EPERM;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		spin_lock(&dbdcd_lock);
+		list_for_each_entry(dcd_key, &reg_key_list, link) {
+			/*  See if the name matches. */
+			if (!strncmp(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1))
+				break;
+		}
+		spin_unlock(&dbdcd_lock);
+	}
+
+	if (&dcd_key->link == &reg_key_list)
+		status = -ENOKEY;
+
+	/* If can't find, phases might be registered as generic LIBRARYTYPE */
+	if (DSP_FAILED(status) && phase != NLDR_NOPHASE) {
+		if (phase_split)
+			*phase_split = false;
+
+		strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
+		if ((strlen(sz_reg_key) + strlen("_\0")) <
+		    DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, "_\0", 2);
+		} else {
+			status = -EPERM;
+		}
+		sprintf(sz_obj_type, "%d", DSP_DCDLIBRARYTYPE);
+		if ((strlen(sz_reg_key) + strlen(sz_obj_type))
+		    < DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, sz_obj_type,
+				strlen(sz_obj_type) + 1);
+		} else {
+			status = -EPERM;
+		}
+		uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
+		if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
+			strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
+		else
+			status = -EPERM;
+
+		spin_lock(&dbdcd_lock);
+		list_for_each_entry(dcd_key, &reg_key_list, link) {
+			/*  See if the name matches. */
+			if (!strncmp(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1))
+				break;
+		}
+		spin_unlock(&dbdcd_lock);
+
+		status = (&dcd_key->link != &reg_key_list) ?
+						0 : -ENOKEY;
+	}
+
+	if (DSP_SUCCEEDED(status))
+		memcpy(pstrLibName, dcd_key->path, strlen(dcd_key->path) + 1);
+	return status;
+}
+
+/*
+ *  ======== dcd_init ========
+ *  Purpose:
+ *      Initialize the DCD module.
+ */
+bool dcd_init(void)
+{
+	bool init_cod;
+	bool ret = true;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (refs == 0) {
+		/* Initialize required modules. */
+		init_cod = cod_init();
+
+		if (!init_cod) {
+			ret = false;
+			/* Exit initialized modules. */
+			if (init_cod)
+				cod_exit();
+		}
+
+		INIT_LIST_HEAD(&reg_key_list);
+	}
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs == 0)));
+
+	return ret;
+}
+
+/*
+ *  ======== dcd_register_object ========
+ *  Purpose:
+ *      Registers a node or a processor with the DCD.
+ *      If psz_path_name == NULL, unregister the specified DCD object.
+ */
+int dcd_register_object(IN struct dsp_uuid *uuid_obj,
+			       IN enum dsp_dcdobjtype obj_type,
+			       IN char *psz_path_name)
+{
+	int status = 0;
+	char sz_reg_key[DCD_MAXPATHLENGTH];
+	char sz_uuid[MAXUUIDLEN + 1];
+	u32 dw_path_size = 0;
+	u32 dw_key_len;		/* Len of REG key. */
+	char sz_obj_type[MAX_INT2CHAR_LENGTH];	/* str. rep. of obj_type. */
+	struct dcd_key_elem *dcd_key = NULL;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(uuid_obj != NULL);
+	DBC_REQUIRE((obj_type == DSP_DCDNODETYPE) ||
+		    (obj_type == DSP_DCDPROCESSORTYPE) ||
+		    (obj_type == DSP_DCDLIBRARYTYPE) ||
+		    (obj_type == DSP_DCDCREATELIBTYPE) ||
+		    (obj_type == DSP_DCDEXECUTELIBTYPE) ||
+		    (obj_type == DSP_DCDDELETELIBTYPE));
+
+	dev_dbg(bridge, "%s: object UUID %p, obj_type %d, szPathName %s\n",
+		__func__, uuid_obj, obj_type, psz_path_name);
+
+	/*
+	 * Pre-determine final key length. It's length of DCD_REGKEY +
+	 *  "_\0" + length of sz_obj_type string + terminating NULL.
+	 */
+	dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
+	DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
+
+	/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
+	strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
+	if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
+		strncat(sz_reg_key, "_\0", 2);
+	else {
+		status = -EPERM;
+		goto func_end;
+	}
+
+	status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d", obj_type);
+	if (status == -1) {
+		status = -EPERM;
+	} else {
+		status = 0;
+		if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
+		    DCD_MAXPATHLENGTH) {
+			strncat(sz_reg_key, sz_obj_type,
+				strlen(sz_obj_type) + 1);
+		} else
+			status = -EPERM;
+
+		/* Create UUID value to set in registry. */
+		uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
+		if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
+			strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
+		else
+			status = -EPERM;
+	}
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/*
+	 * If psz_path_name != NULL, perform registration, otherwise,
+	 * perform unregistration.
+	 */
+
+	if (psz_path_name) {
+		dw_path_size = strlen(psz_path_name) + 1;
+		spin_lock(&dbdcd_lock);
+		list_for_each_entry(dcd_key, &reg_key_list, link) {
+			/*  See if the name matches. */
+			if (!strncmp(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1))
+				break;
+		}
+		spin_unlock(&dbdcd_lock);
+		if (&dcd_key->link == &reg_key_list) {
+			/*
+			 * Add new reg value (UUID+obj_type)
+			 * with COFF path info
+			 */
+
+			dcd_key = kmalloc(sizeof(struct dcd_key_elem),
+								GFP_KERNEL);
+			if (!dcd_key) {
+				status = -ENOMEM;
+				goto func_end;
+			}
+
+			dcd_key->path = kmalloc(strlen(sz_reg_key) + 1,
+								GFP_KERNEL);
+
+			if (!dcd_key->path) {
+				kfree(dcd_key);
+				status = -ENOMEM;
+				goto func_end;
+			}
+
+			strncpy(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1);
+			strncpy(dcd_key->path, psz_path_name ,
+						dw_path_size);
+			spin_lock(&dbdcd_lock);
+			list_add_tail(&dcd_key->link, &reg_key_list);
+			spin_unlock(&dbdcd_lock);
+		} else {
+			/*  Make sure the new data is the same. */
+			if (strncmp(dcd_key->path, psz_path_name,
+							dw_path_size)) {
+				/*  The caller needs a different data size! */
+				kfree(dcd_key->path);
+				dcd_key->path = kmalloc(dw_path_size,
+								GFP_KERNEL);
+				if (dcd_key->path == NULL) {
+					status = -ENOMEM;
+					goto func_end;
+				}
+			}
+
+			/*  We have a match!  Copy out the data. */
+			memcpy(dcd_key->path, psz_path_name, dw_path_size);
+		}
+		dev_dbg(bridge, "%s: psz_path_name=%s, dw_path_size=%d\n",
+			__func__, psz_path_name, dw_path_size);
+	} else {
+		/* Deregister an existing object */
+		spin_lock(&dbdcd_lock);
+		list_for_each_entry(dcd_key, &reg_key_list, link) {
+			if (!strncmp(dcd_key->name, sz_reg_key,
+						strlen(sz_reg_key) + 1)) {
+				list_del(&dcd_key->link);
+				kfree(dcd_key->path);
+				kfree(dcd_key);
+				break;
+			}
+		}
+		spin_unlock(&dbdcd_lock);
+		if (&dcd_key->link == &reg_key_list)
+			status = -EPERM;
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		/*
+		 *  Because the node database has been updated through a
+		 *  successful object registration/de-registration operation,
+		 *  we need to reset the object enumeration counter to allow
+		 *  current enumerations to reflect this update in the node
+		 *  database.
+		 */
+		enum_refs = 0;
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== dcd_unregister_object ========
+ *  Call DCD_Register object with psz_path_name set to NULL to
+ *  perform actual object de-registration.
+ */
+int dcd_unregister_object(IN struct dsp_uuid *uuid_obj,
+				 IN enum dsp_dcdobjtype obj_type)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(uuid_obj != NULL);
+	DBC_REQUIRE((obj_type == DSP_DCDNODETYPE) ||
+		    (obj_type == DSP_DCDPROCESSORTYPE) ||
+		    (obj_type == DSP_DCDLIBRARYTYPE) ||
+		    (obj_type == DSP_DCDCREATELIBTYPE) ||
+		    (obj_type == DSP_DCDEXECUTELIBTYPE) ||
+		    (obj_type == DSP_DCDDELETELIBTYPE));
+
+	/*
+	 *  When dcd_register_object is called with NULL as pathname,
+	 *  it indicates an unregister object operation.
+	 */
+	status = dcd_register_object(uuid_obj, obj_type, NULL);
+
+	return status;
+}
+
+/*
+ **********************************************************************
+ * DCD Helper Functions
+ **********************************************************************
+ */
+
+/*
+ *  ======== atoi ========
+ *  Purpose:
+ *      This function converts strings in decimal or hex format to integers.
+ */
+static s32 atoi(char *psz_buf)
+{
+	char *pch = psz_buf;
+	s32 base = 0;
+
+	while (isspace(*pch))
+		pch++;
+
+	if (*pch == '-' || *pch == '+') {
+		base = 10;
+		pch++;
+	} else if (*pch && tolower(pch[strlen(pch) - 1]) == 'h') {
+		base = 16;
+	}
+
+	return simple_strtoul(pch, NULL, base);
+}
+
+/*
+ *  ======== get_attrs_from_buf ========
+ *  Purpose:
+ *      Parse the content of a buffer filled with DSP-side data and
+ *      retrieve an object's attributes from it. IMPORTANT: Assume the
+ *      buffer has been converted from DSP format to GPP format.
+ */
+static int get_attrs_from_buf(char *psz_buf, u32 ul_buf_size,
+				     enum dsp_dcdobjtype obj_type,
+				     struct dcd_genericobj *pGenObj)
+{
+	int status = 0;
+	char seps[] = ", ";
+	char *psz_cur;
+	char *token;
+	s32 token_len = 0;
+	u32 i = 0;
+#ifdef _DB_TIOMAP
+	s32 entry_id;
+#endif
+
+	DBC_REQUIRE(psz_buf != NULL);
+	DBC_REQUIRE(ul_buf_size != 0);
+	DBC_REQUIRE((obj_type == DSP_DCDNODETYPE)
+		    || (obj_type == DSP_DCDPROCESSORTYPE));
+	DBC_REQUIRE(pGenObj != NULL);
+
+	switch (obj_type) {
+	case DSP_DCDNODETYPE:
+		/*
+		 * Parse COFF sect buffer to retrieve individual tokens used
+		 * to fill in object attrs.
+		 */
+		psz_cur = psz_buf;
+		token = strsep(&psz_cur, seps);
+
+		/* u32 cb_struct */
+		pGenObj->obj_data.node_obj.ndb_props.cb_struct =
+		    (u32) atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* dsp_uuid ui_node_id */
+		uuid_uuid_from_string(token,
+				      &pGenObj->obj_data.node_obj.ndb_props.
+				      ui_node_id);
+		token = strsep(&psz_cur, seps);
+
+		/* ac_name */
+		DBC_REQUIRE(token);
+		token_len = strlen(token);
+		if (token_len > DSP_MAXNAMELEN - 1)
+			token_len = DSP_MAXNAMELEN - 1;
+
+		strncpy(pGenObj->obj_data.node_obj.ndb_props.ac_name,
+			token, token_len);
+		pGenObj->obj_data.node_obj.ndb_props.ac_name[token_len] = '\0';
+		token = strsep(&psz_cur, seps);
+		/* u32 ntype */
+		pGenObj->obj_data.node_obj.ndb_props.ntype = atoi(token);
+		token = strsep(&psz_cur, seps);
+		/* u32 cache_on_gpp */
+		pGenObj->obj_data.node_obj.ndb_props.cache_on_gpp = atoi(token);
+		token = strsep(&psz_cur, seps);
+		/* dsp_resourcereqmts dsp_resource_reqmts */
+		pGenObj->obj_data.node_obj.ndb_props.dsp_resource_reqmts.
+		    cb_struct = (u32) atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.static_data_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.global_data_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.program_mem_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.uwc_execution_time = atoi(token);
+		token = strsep(&psz_cur, seps);
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.uwc_period = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.uwc_deadline = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.avg_exection_time = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.node_obj.ndb_props.
+		    dsp_resource_reqmts.minimum_period = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* s32 prio */
+		pGenObj->obj_data.node_obj.ndb_props.prio = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 stack_size */
+		pGenObj->obj_data.node_obj.ndb_props.stack_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 sys_stack_size */
+		pGenObj->obj_data.node_obj.ndb_props.sys_stack_size =
+		    atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 stack_seg */
+		pGenObj->obj_data.node_obj.ndb_props.stack_seg = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 message_depth */
+		pGenObj->obj_data.node_obj.ndb_props.message_depth =
+		    atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 num_input_streams */
+		pGenObj->obj_data.node_obj.ndb_props.num_input_streams =
+		    atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 num_output_streams */
+		pGenObj->obj_data.node_obj.ndb_props.num_output_streams =
+		    atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* u32 utimeout */
+		pGenObj->obj_data.node_obj.ndb_props.utimeout = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* char *pstr_create_phase_fxn */
+		DBC_REQUIRE(token);
+		token_len = strlen(token);
+		pGenObj->obj_data.node_obj.pstr_create_phase_fxn =
+					kzalloc(token_len + 1, GFP_KERNEL);
+		strncpy(pGenObj->obj_data.node_obj.pstr_create_phase_fxn,
+			token, token_len);
+		pGenObj->obj_data.node_obj.pstr_create_phase_fxn[token_len] =
+		    '\0';
+		token = strsep(&psz_cur, seps);
+
+		/* char *pstr_execute_phase_fxn */
+		DBC_REQUIRE(token);
+		token_len = strlen(token);
+		pGenObj->obj_data.node_obj.pstr_execute_phase_fxn =
+					kzalloc(token_len + 1, GFP_KERNEL);
+		strncpy(pGenObj->obj_data.node_obj.pstr_execute_phase_fxn,
+			token, token_len);
+		pGenObj->obj_data.node_obj.pstr_execute_phase_fxn[token_len] =
+		    '\0';
+		token = strsep(&psz_cur, seps);
+
+		/* char *pstr_delete_phase_fxn */
+		DBC_REQUIRE(token);
+		token_len = strlen(token);
+		pGenObj->obj_data.node_obj.pstr_delete_phase_fxn =
+					kzalloc(token_len + 1, GFP_KERNEL);
+		strncpy(pGenObj->obj_data.node_obj.pstr_delete_phase_fxn,
+			token, token_len);
+		pGenObj->obj_data.node_obj.pstr_delete_phase_fxn[token_len] =
+		    '\0';
+		token = strsep(&psz_cur, seps);
+
+		/* Segment id for message buffers */
+		pGenObj->obj_data.node_obj.msg_segid = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* Message notification type */
+		pGenObj->obj_data.node_obj.msg_notify_type = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		/* char *pstr_i_alg_name */
+		if (token) {
+			token_len = strlen(token);
+			pGenObj->obj_data.node_obj.pstr_i_alg_name =
+					kzalloc(token_len + 1, GFP_KERNEL);
+			strncpy(pGenObj->obj_data.node_obj.pstr_i_alg_name,
+				token, token_len);
+			pGenObj->obj_data.node_obj.pstr_i_alg_name[token_len] =
+			    '\0';
+			token = strsep(&psz_cur, seps);
+		}
+
+		/* Load type (static, dynamic, or overlay) */
+		if (token) {
+			pGenObj->obj_data.node_obj.us_load_type = atoi(token);
+			token = strsep(&psz_cur, seps);
+		}
+
+		/* Dynamic load data requirements */
+		if (token) {
+			pGenObj->obj_data.node_obj.ul_data_mem_seg_mask =
+			    atoi(token);
+			token = strsep(&psz_cur, seps);
+		}
+
+		/* Dynamic load code requirements */
+		if (token) {
+			pGenObj->obj_data.node_obj.ul_code_mem_seg_mask =
+			    atoi(token);
+			token = strsep(&psz_cur, seps);
+		}
+
+		/* Extract node profiles into node properties */
+		if (token) {
+
+			pGenObj->obj_data.node_obj.ndb_props.count_profiles =
+			    atoi(token);
+			for (i = 0;
+			     i <
+			     pGenObj->obj_data.node_obj.
+			     ndb_props.count_profiles; i++) {
+				token = strsep(&psz_cur, seps);
+				if (token) {
+					/* Heap Size for the node */
+					pGenObj->obj_data.node_obj.
+					    ndb_props.node_profiles[i].
+					    ul_heap_size = atoi(token);
+				}
+			}
+		}
+		token = strsep(&psz_cur, seps);
+		if (token) {
+			pGenObj->obj_data.node_obj.ndb_props.stack_seg_name =
+			    (u32) (token);
+		}
+
+		break;
+
+	case DSP_DCDPROCESSORTYPE:
+		/*
+		 * Parse COFF sect buffer to retrieve individual tokens used
+		 * to fill in object attrs.
+		 */
+		psz_cur = psz_buf;
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.cb_struct = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.processor_family = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.processor_type = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.clock_rate = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.ul_internal_mem_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.ul_external_mem_size = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.processor_id = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.ty_running_rtos = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.node_min_priority = atoi(token);
+		token = strsep(&psz_cur, seps);
+
+		pGenObj->obj_data.proc_info.node_max_priority = atoi(token);
+
+#ifdef _DB_TIOMAP
+		/* Proc object may contain additional(extended) attributes. */
+		/* attr must match proc.hxx */
+		for (entry_id = 0; entry_id < 7; entry_id++) {
+			token = strsep(&psz_cur, seps);
+			pGenObj->obj_data.ext_proc_obj.ty_tlb[entry_id].
+			    ul_gpp_phys = atoi(token);
+
+			token = strsep(&psz_cur, seps);
+			pGenObj->obj_data.ext_proc_obj.ty_tlb[entry_id].
+			    ul_dsp_virt = atoi(token);
+		}
+#endif
+
+		break;
+
+	default:
+		status = -EPERM;
+		break;
+	}
+
+	return status;
+}
+
+/*
+ *  ======== CompressBuffer ========
+ *  Purpose:
+ *      Compress the DSP buffer, if necessary, to conform to PC format.
+ */
+static void compress_buf(char *psz_buf, u32 ul_buf_size, s32 cCharSize)
+{
+	char *p;
+	char ch;
+	char *q;
+
+	p = psz_buf;
+	if (p == NULL)
+		return;
+
+	for (q = psz_buf; q < (psz_buf + ul_buf_size);) {
+		ch = dsp_char2_gpp_char(q, cCharSize);
+		if (ch == '\\') {
+			q += cCharSize;
+			ch = dsp_char2_gpp_char(q, cCharSize);
+			switch (ch) {
+			case 't':
+				*p = '\t';
+				break;
+
+			case 'n':
+				*p = '\n';
+				break;
+
+			case 'r':
+				*p = '\r';
+				break;
+
+			case '0':
+				*p = '\0';
+				break;
+
+			default:
+				*p = ch;
+				break;
+			}
+		} else {
+			*p = ch;
+		}
+		p++;
+		q += cCharSize;
+	}
+
+	/* NULL out remainder of buffer. */
+	while (p < q)
+		*p++ = '\0';
+}
+
+/*
+ *  ======== dsp_char2_gpp_char ========
+ *  Purpose:
+ *      Convert DSP char to host GPP char in a portable manner
+ */
+static char dsp_char2_gpp_char(char *pWord, s32 cDspCharSize)
+{
+	char ch = '\0';
+	char *ch_src;
+	s32 i;
+
+	for (ch_src = pWord, i = cDspCharSize; i > 0; i--)
+		ch |= *ch_src++;
+
+	return ch;
+}
+
+/*
+ *  ======== get_dep_lib_info ========
+ */
+static int get_dep_lib_info(IN struct dcd_manager *hdcd_mgr,
+				   IN struct dsp_uuid *uuid_obj,
+				   IN OUT u16 *pNumLibs,
+				   OPTIONAL OUT u16 *pNumPersLibs,
+				   OPTIONAL OUT struct dsp_uuid *pDepLibUuids,
+				   OPTIONAL OUT bool *pPersistentDepLibs,
+				   enum nldr_phase phase)
+{
+	struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
+	char *psz_coff_buf = NULL;
+	char *psz_cur;
+	char *psz_file_name = NULL;
+	struct cod_libraryobj *lib = NULL;
+	u32 ul_addr = 0;	/* Used by cod_get_section */
+	u32 ul_len = 0;		/* Used by cod_get_section */
+	u32 dw_data_size = COD_MAXPATHLENGTH;
+	char seps[] = ", ";
+	char *token = NULL;
+	bool get_uuids = (pDepLibUuids != NULL);
+	u16 dep_libs = 0;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	DBC_REQUIRE(hdcd_mgr);
+	DBC_REQUIRE(pNumLibs != NULL);
+	DBC_REQUIRE(uuid_obj != NULL);
+
+	/*  Initialize to 0 dependent libraries, if only counting number of
+	 *  dependent libraries */
+	if (!get_uuids) {
+		*pNumLibs = 0;
+		*pNumPersLibs = 0;
+	}
+
+	/* Allocate a buffer for file name */
+	psz_file_name = kzalloc(dw_data_size, GFP_KERNEL);
+	if (psz_file_name == NULL) {
+		status = -ENOMEM;
+	} else {
+		/* Get the name of the library */
+		status = dcd_get_library_name(hdcd_mgr, uuid_obj, psz_file_name,
+					      &dw_data_size, phase, NULL);
+	}
+
+	/* Open the library */
+	if (DSP_SUCCEEDED(status)) {
+		status = cod_open(dcd_mgr_obj->cod_mgr, psz_file_name,
+				  COD_NOLOAD, &lib);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Get dependent library section information. */
+		status = cod_get_section(lib, DEPLIBSECT, &ul_addr, &ul_len);
+
+		if (DSP_FAILED(status)) {
+			/* Ok, no dependent libraries */
+			ul_len = 0;
+			status = 0;
+		}
+	}
+
+	if (DSP_FAILED(status) || !(ul_len > 0))
+		goto func_cont;
+
+	/* Allocate zeroed buffer. */
+	psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
+	if (psz_coff_buf == NULL)
+		status = -ENOMEM;
+
+	/* Read section contents. */
+	status = cod_read_section(lib, DEPLIBSECT, psz_coff_buf, ul_len);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	/* Compress and format DSP buffer to conform to PC format. */
+	compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
+
+	/* Read from buffer */
+	psz_cur = psz_coff_buf;
+	while ((token = strsep(&psz_cur, seps)) && *token != '\0') {
+		if (get_uuids) {
+			if (dep_libs >= *pNumLibs) {
+				/* Gone beyond the limit */
+				break;
+			} else {
+				/* Retrieve UUID string. */
+				uuid_uuid_from_string(token,
+						      &(pDepLibUuids
+							[dep_libs]));
+				/* Is this library persistent? */
+				token = strsep(&psz_cur, seps);
+				pPersistentDepLibs[dep_libs] = atoi(token);
+				dep_libs++;
+			}
+		} else {
+			/* Advanc to next token */
+			token = strsep(&psz_cur, seps);
+			if (atoi(token))
+				(*pNumPersLibs)++;
+
+			/* Just counting number of dependent libraries */
+			(*pNumLibs)++;
+		}
+	}
+func_cont:
+	if (lib)
+		cod_close(lib);
+
+	/* Free previously allocated dynamic buffers. */
+	kfree(psz_file_name);
+
+	kfree(psz_coff_buf);
+
+	return status;
+}

drivers/staging/tidspbridge/rmgr/disp.c

+/*
+ * disp.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Node Dispatcher interface. Communicates with Resource Manager Server
+ * (RMS) on DSP. Access to RMS is synchronized in NODE.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software;  you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/sync.h>
+
+/*  ----------------------------------- Link Driver */
+#include <dspbridge/dspdefs.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/dev.h>
+#include <dspbridge/chnldefs.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/nodedefs.h>
+#include <dspbridge/nodepriv.h>
+#include <dspbridge/rms_sh.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/disp.h>
+
+/* Size of a reply from RMS */
+#define REPLYSIZE (3 * sizeof(rms_word))
+
+/* Reserved channel offsets for communication with RMS */
+#define CHNLTORMSOFFSET       0
+#define CHNLFROMRMSOFFSET     1
+
+#define CHNLIOREQS      1
+
+#define SWAP_WORD(x)     (((u32)(x) >> 16) | ((u32)(x) << 16))
+
+/*
+ *  ======== disp_object ========
+ */
+struct disp_object {
+	struct dev_object *hdev_obj;	/* Device for this processor */
+	/* Function interface to Bridge driver */
+	struct bridge_drv_interface *intf_fxns;
+	struct chnl_mgr *hchnl_mgr;	/* Channel manager */
+	struct chnl_object *chnl_to_dsp;	/* Chnl for commands to RMS */
+	struct chnl_object *chnl_from_dsp;	/* Chnl for replies from RMS */
+	u8 *pbuf;		/* Buffer for commands, replies */
+	u32 ul_bufsize;		/* pbuf size in bytes */
+	u32 ul_bufsize_rms;	/* pbuf size in RMS words */
+	u32 char_size;		/* Size of DSP character */
+	u32 word_size;		/* Size of DSP word */
+	u32 data_mau_size;	/* Size of DSP Data MAU */
+};
+
+static u32 refs;
+
+static void delete_disp(struct disp_object *disp_obj);
+static int fill_stream_def(rms_word *pdw_buf, u32 *ptotal, u32 offset,
+				  struct node_strmdef strm_def, u32 max,
+				  u32 chars_in_rms_word);
+static int send_message(struct disp_object *disp_obj, u32 dwTimeout,
+			       u32 ul_bytes, OUT u32 *pdw_arg);
+
+/*
+ *  ======== disp_create ========
+ *  Create a NODE Dispatcher object.
+ */
+int disp_create(OUT struct disp_object **phDispObject,
+		       struct dev_object *hdev_obj,
+		       IN CONST struct disp_attr *pDispAttrs)
+{
+	struct disp_object *disp_obj;
+	struct bridge_drv_interface *intf_fxns;
+	u32 ul_chnl_id;
+	struct chnl_attr chnl_attr_obj;
+	int status = 0;
+	u8 dev_type;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phDispObject != NULL);
+	DBC_REQUIRE(pDispAttrs != NULL);
+	DBC_REQUIRE(hdev_obj != NULL);
+
+	*phDispObject = NULL;
+
+	/* Allocate Node Dispatcher object */
+	disp_obj = kzalloc(sizeof(struct disp_object), GFP_KERNEL);
+	if (disp_obj == NULL)
+		status = -ENOMEM;
+	else
+		disp_obj->hdev_obj = hdev_obj;
+
+	/* Get Channel manager and Bridge function interface */
+	if (DSP_SUCCEEDED(status)) {
+		status = dev_get_chnl_mgr(hdev_obj, &(disp_obj->hchnl_mgr));
+		if (DSP_SUCCEEDED(status)) {
+			(void)dev_get_intf_fxns(hdev_obj, &intf_fxns);
+			disp_obj->intf_fxns = intf_fxns;
+		}
+	}
+
+	/* check device type and decide if streams or messag'ing is used for
+	 * RMS/EDS */
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	status = dev_get_dev_type(hdev_obj, &dev_type);
+
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	if (dev_type != DSP_UNIT) {
+		status = -EPERM;
+		goto func_cont;
+	}
+
+	disp_obj->char_size = DSPWORDSIZE;
+	disp_obj->word_size = DSPWORDSIZE;
+	disp_obj->data_mau_size = DSPWORDSIZE;
+	/* Open channels for communicating with the RMS */
+	chnl_attr_obj.uio_reqs = CHNLIOREQS;
+	chnl_attr_obj.event_obj = NULL;
+	ul_chnl_id = pDispAttrs->ul_chnl_offset + CHNLTORMSOFFSET;
+	status = (*intf_fxns->pfn_chnl_open) (&(disp_obj->chnl_to_dsp),
+					      disp_obj->hchnl_mgr,
+					      CHNL_MODETODSP, ul_chnl_id,
+					      &chnl_attr_obj);
+
+	if (DSP_SUCCEEDED(status)) {
+		ul_chnl_id = pDispAttrs->ul_chnl_offset + CHNLFROMRMSOFFSET;
+		status =
+		    (*intf_fxns->pfn_chnl_open) (&(disp_obj->chnl_from_dsp),
+						 disp_obj->hchnl_mgr,
+						 CHNL_MODEFROMDSP, ul_chnl_id,
+						 &chnl_attr_obj);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Allocate buffer for commands, replies */
+		disp_obj->ul_bufsize = pDispAttrs->ul_chnl_buf_size;
+		disp_obj->ul_bufsize_rms = RMS_COMMANDBUFSIZE;
+		disp_obj->pbuf = kzalloc(disp_obj->ul_bufsize, GFP_KERNEL);
+		if (disp_obj->pbuf == NULL)
+			status = -ENOMEM;
+	}
+func_cont:
+	if (DSP_SUCCEEDED(status))
+		*phDispObject = disp_obj;
+	else
+		delete_disp(disp_obj);
+
+	DBC_ENSURE(((DSP_FAILED(status)) && ((*phDispObject == NULL))) ||
+				((DSP_SUCCEEDED(status)) && *phDispObject));
+	return status;
+}
+
+/*
+ *  ======== disp_delete ========
+ *  Delete the NODE Dispatcher.
+ */
+void disp_delete(struct disp_object *disp_obj)
+{
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(disp_obj);
+
+	delete_disp(disp_obj);
+}
+
+/*
+ *  ======== disp_exit ========
+ *  Discontinue usage of DISP module.
+ */
+void disp_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== disp_init ========
+ *  Initialize the DISP module.
+ */
+bool disp_init(void)
+{
+	bool ret = true;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
+	return ret;
+}
+
+/*
+ *  ======== disp_node_change_priority ========
+ *  Change the priority of a node currently running on the target.
+ */
+int disp_node_change_priority(struct disp_object *disp_obj,
+				     struct node_object *hnode,
+				     u32 ulRMSFxn, nodeenv node_env, s32 prio)
+{
+	u32 dw_arg;
+	struct rms_command *rms_cmd;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(disp_obj);
+	DBC_REQUIRE(hnode != NULL);
+
+	/* Send message to RMS to change priority */
+	rms_cmd = (struct rms_command *)(disp_obj->pbuf);
+	rms_cmd->fxn = (rms_word) (ulRMSFxn);
+	rms_cmd->arg1 = (rms_word) node_env;
+	rms_cmd->arg2 = prio;
+	status = send_message(disp_obj, node_get_timeout(hnode),
+			      sizeof(struct rms_command), &dw_arg);
+
+	return status;
+}
+
+/*
+ *  ======== disp_node_create ========
+ *  Create a node on the DSP by remotely calling the node's create function.
+ */
+int disp_node_create(struct disp_object *disp_obj,
+			    struct node_object *hnode, u32 ulRMSFxn,
+			    u32 ul_create_fxn,
+			    IN CONST struct node_createargs *pargs,
+			    OUT nodeenv *pNodeEnv)
+{
+	struct node_msgargs node_msg_args;
+	struct node_taskargs task_arg_obj;
+	struct rms_command *rms_cmd;
+	struct rms_msg_args *pmsg_args;
+	struct rms_more_task_args *more_task_args;
+	enum node_type node_type;
+	u32 dw_length;
+	rms_word *pdw_buf = NULL;
+	u32 ul_bytes;
+	u32 i;
+	u32 total;
+	u32 chars_in_rms_word;
+	s32 task_args_offset;
+	s32 sio_in_def_offset;
+	s32 sio_out_def_offset;
+	s32 sio_defs_offset;
+	s32 args_offset = -1;
+	s32 offset;
+	struct node_strmdef strm_def;
+	u32 max;
+	int status = 0;
+	struct dsp_nodeinfo node_info;
+	u8 dev_type;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(disp_obj);
+	DBC_REQUIRE(hnode != NULL);
+	DBC_REQUIRE(node_get_type(hnode) != NODE_DEVICE);
+	DBC_REQUIRE(pNodeEnv != NULL);
+
+	status = dev_get_dev_type(disp_obj->hdev_obj, &dev_type);
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (dev_type != DSP_UNIT) {
+		dev_dbg(bridge, "%s: unknown device type = 0x%x\n",
+			__func__, dev_type);
+		goto func_end;
+	}
+	DBC_REQUIRE(pargs != NULL);
+	node_type = node_get_type(hnode);
+	node_msg_args = pargs->asa.node_msg_args;
+	max = disp_obj->ul_bufsize_rms;	/*Max # of RMS words that can be sent */
+	DBC_ASSERT(max == RMS_COMMANDBUFSIZE);
+	chars_in_rms_word = sizeof(rms_word) / disp_obj->char_size;
+	/* Number of RMS words needed to hold arg data */
+	dw_length =
+	    (node_msg_args.arg_length + chars_in_rms_word -
+	     1) / chars_in_rms_word;
+	/* Make sure msg args and command fit in buffer */
+	total = sizeof(struct rms_command) / sizeof(rms_word) +
+	    sizeof(struct rms_msg_args)
+	    / sizeof(rms_word) - 1 + dw_length;
+	if (total >= max) {
+		status = -EPERM;
+		dev_dbg(bridge, "%s: Message args too large for buffer! size "
+			"= %d, max = %d\n", __func__, total, max);
+	}
+	/*
+	 *  Fill in buffer to send to RMS.
+	 *  The buffer will have the following  format:
+	 *
+	 *  RMS command:
+	 *      Address of RMS_CreateNode()
+	 *      Address of node's create function
+	 *      dummy argument
+	 *      node type
+	 *
+	 *  Message Args:
+	 *      max number of messages
+	 *      segid for message buffer allocation
+	 *      notification type to use when message is received
+	 *      length of message arg data
+	 *      message args data
+	 *
+	 *  Task Args (if task or socket node):
+	 *      priority
+	 *      stack size
+	 *      system stack size
+	 *      stack segment
+	 *      misc
+	 *      number of input streams
+	 *      pSTRMInDef[] - offsets of STRM definitions for input streams
+	 *      number of output streams
+	 *      pSTRMOutDef[] - offsets of STRM definitions for output
+	 *      streams
+	 *      STRMInDef[] - array of STRM definitions for input streams
+	 *      STRMOutDef[] - array of STRM definitions for output streams
+	 *
+	 *  Socket Args (if DAIS socket node):
+	 *
+	 */
+	if (DSP_SUCCEEDED(status)) {
+		total = 0;	/* Total number of words in buffer so far */
+		pdw_buf = (rms_word *) disp_obj->pbuf;
+		rms_cmd = (struct rms_command *)pdw_buf;
+		rms_cmd->fxn = (rms_word) (ulRMSFxn);
+		rms_cmd->arg1 = (rms_word) (ul_create_fxn);
+		if (node_get_load_type(hnode) == NLDR_DYNAMICLOAD) {
+			/* Flush ICACHE on Load */
+			rms_cmd->arg2 = 1;	/* dummy argument */
+		} else {
+			/* Do not flush ICACHE */
+			rms_cmd->arg2 = 0;	/* dummy argument */
+		}
+		rms_cmd->data = node_get_type(hnode);
+		/*
+		 *  args_offset is the offset of the data field in struct
+		 *  rms_command structure. We need this to calculate stream
+		 *  definition offsets.
+		 */
+		args_offset = 3;
+		total += sizeof(struct rms_command) / sizeof(rms_word);
+		/* Message args */
+		pmsg_args = (struct rms_msg_args *)(pdw_buf + total);
+		pmsg_args->max_msgs = node_msg_args.max_msgs;
+		pmsg_args->segid = node_msg_args.seg_id;
+		pmsg_args->notify_type = node_msg_args.notify_type;
+		pmsg_args->arg_length = node_msg_args.arg_length;
+		total += sizeof(struct rms_msg_args) / sizeof(rms_word) - 1;
+		memcpy(pdw_buf + total, node_msg_args.pdata,
+		       node_msg_args.arg_length);
+		total += dw_length;
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* If node is a task node, copy task create arguments into  buffer */
+	if (node_type == NODE_TASK || node_type == NODE_DAISSOCKET) {
+		task_arg_obj = pargs->asa.task_arg_obj;
+		task_args_offset = total;
+		total += sizeof(struct rms_more_task_args) / sizeof(rms_word) +
+		    1 + task_arg_obj.num_inputs + task_arg_obj.num_outputs;
+		/* Copy task arguments */
+		if (total < max) {
+			total = task_args_offset;
+			more_task_args = (struct rms_more_task_args *)(pdw_buf +
+								       total);
+			/*
+			 * Get some important info about the node. Note that we
+			 * don't just reach into the hnode struct because
+			 * that would break the node object's abstraction.
+			 */
+			get_node_info(hnode, &node_info);
+			more_task_args->priority = node_info.execution_priority;
+			more_task_args->stack_size = task_arg_obj.stack_size;
+			more_task_args->sysstack_size =
+			    task_arg_obj.sys_stack_size;
+			more_task_args->stack_seg = task_arg_obj.stack_seg;
+			more_task_args->heap_addr = task_arg_obj.udsp_heap_addr;
+			more_task_args->heap_size = task_arg_obj.heap_size;
+			more_task_args->misc = task_arg_obj.ul_dais_arg;
+			more_task_args->num_input_streams =
+			    task_arg_obj.num_inputs;
+			total +=
+			    sizeof(struct rms_more_task_args) /
+			    sizeof(rms_word);
+			dev_dbg(bridge, "%s: udsp_heap_addr %x, heap_size %x\n",
+				__func__, task_arg_obj.udsp_heap_addr,
+				task_arg_obj.heap_size);
+			/* Keep track of pSIOInDef[] and pSIOOutDef[]
+			 * positions in the buffer, since this needs to be
+			 * filled in later. */
+			sio_in_def_offset = total;
+			total += task_arg_obj.num_inputs;
+			pdw_buf[total++] = task_arg_obj.num_outputs;
+			sio_out_def_offset = total;
+			total += task_arg_obj.num_outputs;
+			sio_defs_offset = total;
+			/* Fill SIO defs and offsets */
+			offset = sio_defs_offset;
+			for (i = 0; i < task_arg_obj.num_inputs; i++) {
+				if (DSP_FAILED(status))
+					break;
+
+				pdw_buf[sio_in_def_offset + i] =
+				    (offset - args_offset)
+				    * (sizeof(rms_word) / DSPWORDSIZE);
+				strm_def = task_arg_obj.strm_in_def[i];
+				status =
+				    fill_stream_def(pdw_buf, &total, offset,
+						    strm_def, max,
+						    chars_in_rms_word);
+				offset = total;
+			}
+			for (i = 0; (i < task_arg_obj.num_outputs) &&
+			     (DSP_SUCCEEDED(status)); i++) {
+				pdw_buf[sio_out_def_offset + i] =
+				    (offset - args_offset)
+				    * (sizeof(rms_word) / DSPWORDSIZE);
+				strm_def = task_arg_obj.strm_out_def[i];
+				status =
+				    fill_stream_def(pdw_buf, &total, offset,
+						    strm_def, max,
+						    chars_in_rms_word);
+				offset = total;
+			}
+		} else {
+			/* Args won't fit */
+			status = -EPERM;
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		ul_bytes = total * sizeof(rms_word);
+		DBC_ASSERT(ul_bytes < (RMS_COMMANDBUFSIZE * sizeof(rms_word)));
+		status = send_message(disp_obj, node_get_timeout(hnode),
+				      ul_bytes, pNodeEnv);
+		if (DSP_SUCCEEDED(status)) {
+			/*
+			 * Message successfully received from RMS.
+			 * Return the status of the Node's create function
+			 * on the DSP-side
+			 */
+			status = (((rms_word *) (disp_obj->pbuf))[0]);
+			if (DSP_FAILED(status))
+				dev_dbg(bridge, "%s: DSP-side failed: 0x%x\n",
+					__func__, status);
+		}
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== disp_node_delete ========
+ *  purpose:
+ *      Delete a node on the DSP by remotely calling the node's delete function.
+ *
+ */
+int disp_node_delete(struct disp_object *disp_obj,
+			    struct node_object *hnode, u32 ulRMSFxn,
+			    u32 ul_delete_fxn, nodeenv node_env)
+{
+	u32 dw_arg;
+	struct rms_command *rms_cmd;
+	int status = 0;
+	u8 dev_type;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(disp_obj);
+	DBC_REQUIRE(hnode != NULL);
+
+	status = dev_get_dev_type(disp_obj->hdev_obj, &dev_type);
+
+	if (DSP_SUCCEEDED(status)) {
+
+		if (dev_type == DSP_UNIT) {
+
+			/*
+			 *  Fill in buffer to send to RMS
+			 */
+			rms_cmd = (struct rms_command *)disp_obj->pbuf;
+			rms_cmd->fxn = (rms_word) (ulRMSFxn);
+			rms_cmd->arg1 = (rms_word) node_env;
+			rms_cmd->arg2 = (rms_word) (ul_delete_fxn);
+			rms_cmd->data = node_get_type(hnode);
+
+			status = send_message(disp_obj, node_get_timeout(hnode),
+					      sizeof(struct rms_command),
+					      &dw_arg);
+			if (DSP_SUCCEEDED(status)) {
+				/*
+				 * Message successfully received from RMS.
+				 * Return the status of the Node's delete
+				 * function on the DSP-side
+				 */
+				status = (((rms_word *) (disp_obj->pbuf))[0]);
+				if (DSP_FAILED(status))
+					dev_dbg(bridge, "%s: DSP-side failed: "
+						"0x%x\n", __func__, status);
+			}
+
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== disp_node_run ========
+ *  purpose:
+ *      Start execution of a node's execute phase, or resume execution of a node
+ *      that has been suspended (via DISP_NodePause()) on the DSP.
+ */
+int disp_node_run(struct disp_object *disp_obj,
+			 struct node_object *hnode, u32 ulRMSFxn,
+			 u32 ul_execute_fxn, nodeenv node_env)
+{
+	u32 dw_arg;
+	struct rms_command *rms_cmd;
+	int status = 0;
+	u8 dev_type;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(disp_obj);
+	DBC_REQUIRE(hnode != NULL);
+
+	status = dev_get_dev_type(disp_obj->hdev_obj, &dev_type);
+
+	if (DSP_SUCCEEDED(status)) {
+
+		if (dev_type == DSP_UNIT) {
+
+			/*
+			 *  Fill in buffer to send to RMS.
+			 */
+			rms_cmd = (struct rms_command *)disp_obj->pbuf;
+			rms_cmd->fxn = (rms_word) (ulRMSFxn);
+			rms_cmd->arg1 = (rms_word) node_env;
+			rms_cmd->arg2 = (rms_word) (ul_execute_fxn);
+			rms_cmd->data = node_get_type(hnode);
+
+			status = send_message(disp_obj, node_get_timeout(hnode),
+					      sizeof(struct rms_command),
+					      &dw_arg);
+			if (DSP_SUCCEEDED(status)) {
+				/*
+				 * Message successfully received from RMS.
+				 * Return the status of the Node's execute
+				 * function on the DSP-side
+				 */
+				status = (((rms_word *) (disp_obj->pbuf))[0]);
+				if (DSP_FAILED(status))
+					dev_dbg(bridge, "%s: DSP-side failed: "
+						"0x%x\n", __func__, status);
+			}
+
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== delete_disp ========
+ *  purpose:
+ *      Frees the resources allocated for the dispatcher.
+ */
+static void delete_disp(struct disp_object *disp_obj)
+{
+	int status = 0;
+	struct bridge_drv_interface *intf_fxns;
+
+	if (disp_obj) {
+		intf_fxns = disp_obj->intf_fxns;
+
+		/* Free Node Dispatcher resources */
+		if (disp_obj->chnl_from_dsp) {
+			/* Channel close can fail only if the channel handle
+			 * is invalid. */
+			status = (*intf_fxns->pfn_chnl_close)
+			    (disp_obj->chnl_from_dsp);
+			if (DSP_FAILED(status)) {
+				dev_dbg(bridge, "%s: Failed to close channel "
+					"from RMS: 0x%x\n", __func__, status);
+			}
+		}
+		if (disp_obj->chnl_to_dsp) {
+			status =
+			    (*intf_fxns->pfn_chnl_close) (disp_obj->
+							  chnl_to_dsp);
+			if (DSP_FAILED(status)) {
+				dev_dbg(bridge, "%s: Failed to close channel to"
+					" RMS: 0x%x\n", __func__, status);
+			}
+		}
+		kfree(disp_obj->pbuf);
+
+		kfree(disp_obj);
+	}
+}
+
+/*
+ *  ======== fill_stream_def ========
+ *  purpose:
+ *      Fills stream definitions.
+ */
+static int fill_stream_def(rms_word *pdw_buf, u32 *ptotal, u32 offset,
+				  struct node_strmdef strm_def, u32 max,
+				  u32 chars_in_rms_word)
+{
+	struct rms_strm_def *strm_def_obj;
+	u32 total = *ptotal;
+	u32 name_len;
+	u32 dw_length;
+	int status = 0;
+
+	if (total + sizeof(struct rms_strm_def) / sizeof(rms_word) >= max) {
+		status = -EPERM;
+	} else {
+		strm_def_obj = (struct rms_strm_def *)(pdw_buf + total);
+		strm_def_obj->bufsize = strm_def.buf_size;
+		strm_def_obj->nbufs = strm_def.num_bufs;
+		strm_def_obj->segid = strm_def.seg_id;
+		strm_def_obj->align = strm_def.buf_alignment;
+		strm_def_obj->timeout = strm_def.utimeout;
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		/*
+		 *  Since we haven't added the device name yet, subtract
+		 *  1 from total.
+		 */
+		total += sizeof(struct rms_strm_def) / sizeof(rms_word) - 1;
+		DBC_REQUIRE(strm_def.sz_device);
+		dw_length = strlen(strm_def.sz_device) + 1;
+
+		/* Number of RMS_WORDS needed to hold device name */
+		name_len =
+		    (dw_length + chars_in_rms_word - 1) / chars_in_rms_word;
+
+		if (total + name_len >= max) {
+			status = -EPERM;
+		} else {
+			/*
+			 *  Zero out last word, since the device name may not
+			 *  extend to completely fill this word.
+			 */
+			pdw_buf[total + name_len - 1] = 0;
+			/** TODO USE SERVICES * */
+			memcpy(pdw_buf + total, strm_def.sz_device, dw_length);
+			total += name_len;
+			*ptotal = total;
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== send_message ======
+ *  Send command message to RMS, get reply from RMS.
+ */
+static int send_message(struct disp_object *disp_obj, u32 dwTimeout,
+			       u32 ul_bytes, u32 *pdw_arg)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct chnl_object *chnl_obj;
+	u32 dw_arg = 0;
+	u8 *pbuf;
+	struct chnl_ioc chnl_ioc_obj;
+	int status = 0;
+
+	DBC_REQUIRE(pdw_arg != NULL);
+
+	*pdw_arg = (u32) NULL;
+	intf_fxns = disp_obj->intf_fxns;
+	chnl_obj = disp_obj->chnl_to_dsp;
+	pbuf = disp_obj->pbuf;
+
+	/* Send the command */
+	status = (*intf_fxns->pfn_chnl_add_io_req) (chnl_obj, pbuf, ul_bytes, 0,
+						    0L, dw_arg);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	status =
+	    (*intf_fxns->pfn_chnl_get_ioc) (chnl_obj, dwTimeout, &chnl_ioc_obj);
+	if (DSP_SUCCEEDED(status)) {
+		if (!CHNL_IS_IO_COMPLETE(chnl_ioc_obj)) {
+			if (CHNL_IS_TIMED_OUT(chnl_ioc_obj))
+				status = -ETIME;
+			else
+				status = -EPERM;
+		}
+	}
+	/* Get the reply */
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	chnl_obj = disp_obj->chnl_from_dsp;
+	ul_bytes = REPLYSIZE;
+	status = (*intf_fxns->pfn_chnl_add_io_req) (chnl_obj, pbuf, ul_bytes,
+						    0, 0L, dw_arg);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	status =
+	    (*intf_fxns->pfn_chnl_get_ioc) (chnl_obj, dwTimeout, &chnl_ioc_obj);
+	if (DSP_SUCCEEDED(status)) {
+		if (CHNL_IS_TIMED_OUT(chnl_ioc_obj)) {
+			status = -ETIME;
+		} else if (chnl_ioc_obj.byte_size < ul_bytes) {
+			/* Did not get all of the reply from the RMS */
+			status = -EPERM;
+		} else {
+			if (CHNL_IS_IO_COMPLETE(chnl_ioc_obj)) {
+				DBC_ASSERT(chnl_ioc_obj.pbuf == pbuf);
+				status = (*((rms_word *) chnl_ioc_obj.pbuf));
+				*pdw_arg =
+				    (((rms_word *) (chnl_ioc_obj.pbuf))[1]);
+			} else {
+				status = -EPERM;
+			}
+		}
+	}
+func_end:
+	return status;
+}

drivers/staging/tidspbridge/rmgr/drv.c

+/*
+ * drv.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP/BIOS Bridge resource allocation module.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+#include <dspbridge/list.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/drv.h>
+#include <dspbridge/dev.h>
+
+#include <dspbridge/node.h>
+#include <dspbridge/proc.h>
+#include <dspbridge/strm.h>
+#include <dspbridge/nodepriv.h>
+#include <dspbridge/dspchnl.h>
+#include <dspbridge/resourcecleanup.h>
+
+/*  ----------------------------------- Defines, Data Structures, Typedefs */
+struct drv_object {
+	struct lst_list *dev_list;
+	struct lst_list *dev_node_string;
+};
+
+/*
+ *  This is the Device Extension. Named with the Prefix
+ *  DRV_ since it is living in this module
+ */
+struct drv_ext {
+	struct list_head link;
+	char sz_string[MAXREGPATHLENGTH];
+};
+
+/*  ----------------------------------- Globals */
+static s32 refs;
+static bool ext_phys_mem_pool_enabled;
+struct ext_phys_mem_pool {
+	u32 phys_mem_base;
+	u32 phys_mem_size;
+	u32 virt_mem_base;
+	u32 next_phys_alloc_ptr;
+};
+static struct ext_phys_mem_pool ext_mem_pool;
+
+/*  ----------------------------------- Function Prototypes */
+static int request_bridge_resources(struct cfg_hostres *res);
+
+
+/* GPP PROCESS CLEANUP CODE */
+
+static int drv_proc_free_node_res(void *hPCtxt);
+
+/* Allocate and add a node resource element
+* This function is called from .Node_Allocate. */
+int drv_insert_node_res_element(void *hnode, void *hNodeRes,
+				       void *hPCtxt)
+{
+	struct node_res_object **node_res_obj =
+	    (struct node_res_object **)hNodeRes;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct node_res_object *temp_node_res = NULL;
+
+	*node_res_obj = kzalloc(sizeof(struct node_res_object), GFP_KERNEL);
+	if (*node_res_obj == NULL)
+		status = -EFAULT;
+
+	if (DSP_SUCCEEDED(status)) {
+		if (mutex_lock_interruptible(&ctxt->node_mutex)) {
+			kfree(*node_res_obj);
+			return -EPERM;
+		}
+		(*node_res_obj)->hnode = hnode;
+		if (ctxt->node_list != NULL) {
+			temp_node_res = ctxt->node_list;
+			while (temp_node_res->next != NULL)
+				temp_node_res = temp_node_res->next;
+
+			temp_node_res->next = *node_res_obj;
+		} else {
+			ctxt->node_list = *node_res_obj;
+		}
+		mutex_unlock(&ctxt->node_mutex);
+	}
+
+	return status;
+}
+
+/* Release all Node resources and its context
+* This is called from .Node_Delete. */
+int drv_remove_node_res_element(void *hNodeRes, void *hPCtxt)
+{
+	struct node_res_object *node_res_obj =
+	    (struct node_res_object *)hNodeRes;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	struct node_res_object *temp_node;
+	int status = 0;
+
+	if (mutex_lock_interruptible(&ctxt->node_mutex))
+		return -EPERM;
+	temp_node = ctxt->node_list;
+	if (temp_node == node_res_obj) {
+		ctxt->node_list = node_res_obj->next;
+	} else {
+		while (temp_node && temp_node->next != node_res_obj)
+			temp_node = temp_node->next;
+		if (!temp_node)
+			status = -ENOENT;
+		else
+			temp_node->next = node_res_obj->next;
+	}
+	mutex_unlock(&ctxt->node_mutex);
+	kfree(node_res_obj);
+	return status;
+}
+
+/* Actual Node De-Allocation */
+static int drv_proc_free_node_res(void *hPCtxt)
+{
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct node_res_object *node_list = NULL;
+	struct node_res_object *node_res_obj = NULL;
+	u32 node_state;
+
+	node_list = ctxt->node_list;
+	while (node_list != NULL) {
+		node_res_obj = node_list;
+		node_list = node_list->next;
+		if (node_res_obj->node_allocated) {
+			node_state = node_get_state(node_res_obj->hnode);
+			if (node_state <= NODE_DELETING) {
+				if ((node_state == NODE_RUNNING) ||
+				    (node_state == NODE_PAUSED) ||
+				    (node_state == NODE_TERMINATING))
+					status = node_terminate
+					    (node_res_obj->hnode, &status);
+
+				status = node_delete(node_res_obj->hnode, ctxt);
+			}
+		}
+	}
+	return status;
+}
+
+/* Release all Mapped and Reserved DMM resources */
+int drv_remove_all_dmm_res_elements(void *hPCtxt)
+{
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct dmm_map_object *temp_map, *map_obj;
+	struct dmm_rsv_object *temp_rsv, *rsv_obj;
+
+	/* Free DMM mapped memory resources */
+	list_for_each_entry_safe(map_obj, temp_map, &ctxt->dmm_map_list, link) {
+		status = proc_un_map(ctxt->hprocessor,
+				     (void *)map_obj->dsp_addr, ctxt);
+		if (DSP_FAILED(status))
+			pr_err("%s: proc_un_map failed!"
+			       " status = 0x%xn", __func__, status);
+	}
+
+	/* Free DMM reserved memory resources */
+	list_for_each_entry_safe(rsv_obj, temp_rsv, &ctxt->dmm_rsv_list, link) {
+		status = proc_un_reserve_memory(ctxt->hprocessor, (void *)
+						rsv_obj->dsp_reserved_addr,
+						ctxt);
+		if (DSP_FAILED(status))
+			pr_err("%s: proc_un_reserve_memory failed!"
+			       " status = 0x%xn", __func__, status);
+	}
+	return status;
+}
+
+/* Update Node allocation status */
+void drv_proc_node_update_status(void *hNodeRes, s32 status)
+{
+	struct node_res_object *node_res_obj =
+	    (struct node_res_object *)hNodeRes;
+	DBC_ASSERT(hNodeRes != NULL);
+	node_res_obj->node_allocated = status;
+}
+
+/* Update Node Heap status */
+void drv_proc_node_update_heap_status(void *hNodeRes, s32 status)
+{
+	struct node_res_object *node_res_obj =
+	    (struct node_res_object *)hNodeRes;
+	DBC_ASSERT(hNodeRes != NULL);
+	node_res_obj->heap_allocated = status;
+}
+
+/* Release all Node resources and its context
+* This is called from .bridge_release.
+ */
+int drv_remove_all_node_res_elements(void *hPCtxt)
+{
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct node_res_object *temp_node2 = NULL;
+	struct node_res_object *temp_node = NULL;
+
+	drv_proc_free_node_res(ctxt);
+	temp_node = ctxt->node_list;
+	while (temp_node != NULL) {
+		temp_node2 = temp_node;
+		temp_node = temp_node->next;
+		kfree(temp_node2);
+	}
+	ctxt->node_list = NULL;
+	return status;
+}
+
+/* Getting the node resource element */
+int drv_get_node_res_element(void *hnode, void *hNodeRes,
+				    void *hPCtxt)
+{
+	struct node_res_object **node_res = (struct node_res_object **)hNodeRes;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct node_res_object *temp_node2 = NULL;
+	struct node_res_object *temp_node = NULL;
+
+	if (mutex_lock_interruptible(&ctxt->node_mutex))
+		return -EPERM;
+
+	temp_node = ctxt->node_list;
+	while ((temp_node != NULL) && (temp_node->hnode != hnode)) {
+		temp_node2 = temp_node;
+		temp_node = temp_node->next;
+	}
+
+	mutex_unlock(&ctxt->node_mutex);
+
+	if (temp_node != NULL)
+		*node_res = temp_node;
+	else
+		status = -ENOENT;
+
+	return status;
+}
+
+/* Allocate the STRM resource element
+* This is called after the actual resource is allocated
+ */
+int drv_proc_insert_strm_res_element(void *hStreamHandle,
+					    void *hstrm_res, void *hPCtxt)
+{
+	struct strm_res_object **pstrm_res =
+	    (struct strm_res_object **)hstrm_res;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct strm_res_object *temp_strm_res = NULL;
+
+	*pstrm_res = kzalloc(sizeof(struct strm_res_object), GFP_KERNEL);
+	if (*pstrm_res == NULL)
+		status = -EFAULT;
+
+	if (DSP_SUCCEEDED(status)) {
+		if (mutex_lock_interruptible(&ctxt->strm_mutex)) {
+			kfree(*pstrm_res);
+			return -EPERM;
+		}
+		(*pstrm_res)->hstream = hStreamHandle;
+		if (ctxt->pstrm_list != NULL) {
+			temp_strm_res = ctxt->pstrm_list;
+			while (temp_strm_res->next != NULL)
+				temp_strm_res = temp_strm_res->next;
+
+			temp_strm_res->next = *pstrm_res;
+		} else {
+			ctxt->pstrm_list = *pstrm_res;
+		}
+		mutex_unlock(&ctxt->strm_mutex);
+	}
+	return status;
+}
+
+/* Release Stream resource element context
+* This function called after the actual resource is freed
+ */
+int drv_proc_remove_strm_res_element(void *hstrm_res, void *hPCtxt)
+{
+	struct strm_res_object *pstrm_res = (struct strm_res_object *)hstrm_res;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	struct strm_res_object *temp_strm_res;
+	int status = 0;
+
+	if (mutex_lock_interruptible(&ctxt->strm_mutex))
+		return -EPERM;
+	temp_strm_res = ctxt->pstrm_list;
+
+	if (ctxt->pstrm_list == pstrm_res) {
+		ctxt->pstrm_list = pstrm_res->next;
+	} else {
+		while (temp_strm_res && temp_strm_res->next != pstrm_res)
+			temp_strm_res = temp_strm_res->next;
+		if (temp_strm_res == NULL)
+			status = -ENOENT;
+		else
+			temp_strm_res->next = pstrm_res->next;
+	}
+	mutex_unlock(&ctxt->strm_mutex);
+	kfree(pstrm_res);
+	return status;
+}
+
+/* Release all Stream resources and its context
+* This is called from .bridge_release.
+ */
+int drv_remove_all_strm_res_elements(void *hPCtxt)
+{
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct strm_res_object *strm_res = NULL;
+	struct strm_res_object *strm_tmp = NULL;
+	struct stream_info strm_info;
+	struct dsp_streaminfo user;
+	u8 **ap_buffer = NULL;
+	u8 *buf_ptr;
+	u32 ul_bytes;
+	u32 dw_arg;
+	s32 ul_buf_size;
+
+	strm_tmp = ctxt->pstrm_list;
+	while (strm_tmp) {
+		strm_res = strm_tmp;
+		strm_tmp = strm_tmp->next;
+		if (strm_res->num_bufs) {
+			ap_buffer = kmalloc((strm_res->num_bufs *
+					sizeof(u8 *)), GFP_KERNEL);
+			if (ap_buffer) {
+				status = strm_free_buffer(strm_res->hstream,
+							  ap_buffer,
+							  strm_res->num_bufs,
+							  ctxt);
+				kfree(ap_buffer);
+			}
+		}
+		strm_info.user_strm = &user;
+		user.number_bufs_in_stream = 0;
+		strm_get_info(strm_res->hstream, &strm_info, sizeof(strm_info));
+		while (user.number_bufs_in_stream--)
+			strm_reclaim(strm_res->hstream, &buf_ptr, &ul_bytes,
+				     (u32 *) &ul_buf_size, &dw_arg);
+		status = strm_close(strm_res->hstream, ctxt);
+	}
+	return status;
+}
+
+/* Getting the stream resource element */
+int drv_get_strm_res_element(void *hStrm, void *hstrm_res,
+				    void *hPCtxt)
+{
+	struct strm_res_object **strm_res =
+	    (struct strm_res_object **)hstrm_res;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	int status = 0;
+	struct strm_res_object *temp_strm2 = NULL;
+	struct strm_res_object *temp_strm;
+
+	if (mutex_lock_interruptible(&ctxt->strm_mutex))
+		return -EPERM;
+
+	temp_strm = ctxt->pstrm_list;
+	while ((temp_strm != NULL) && (temp_strm->hstream != hStrm)) {
+		temp_strm2 = temp_strm;
+		temp_strm = temp_strm->next;
+	}
+
+	mutex_unlock(&ctxt->strm_mutex);
+
+	if (temp_strm != NULL)
+		*strm_res = temp_strm;
+	else
+		status = -ENOENT;
+
+	return status;
+}
+
+/* Updating the stream resource element */
+int drv_proc_update_strm_res(u32 num_bufs, void *hstrm_res)
+{
+	int status = 0;
+	struct strm_res_object **strm_res =
+	    (struct strm_res_object **)hstrm_res;
+
+	(*strm_res)->num_bufs = num_bufs;
+	return status;
+}
+
+/* GPP PROCESS CLEANUP CODE END */
+
+/*
+ *  ======== = drv_create ======== =
+ *  Purpose:
+ *      DRV Object gets created only once during Driver Loading.
+ */
+int drv_create(OUT struct drv_object **phDRVObject)
+{
+	int status = 0;
+	struct drv_object *pdrv_object = NULL;
+
+	DBC_REQUIRE(phDRVObject != NULL);
+	DBC_REQUIRE(refs > 0);
+
+	pdrv_object = kzalloc(sizeof(struct drv_object), GFP_KERNEL);
+	if (pdrv_object) {
+		/* Create and Initialize List of device objects */
+		pdrv_object->dev_list = kzalloc(sizeof(struct lst_list),
+							GFP_KERNEL);
+		if (pdrv_object->dev_list) {
+			/* Create and Initialize List of device Extension */
+			pdrv_object->dev_node_string =
+				kzalloc(sizeof(struct lst_list), GFP_KERNEL);
+			if (!(pdrv_object->dev_node_string)) {
+				status = -EPERM;
+			} else {
+				INIT_LIST_HEAD(&pdrv_object->
+					       dev_node_string->head);
+				INIT_LIST_HEAD(&pdrv_object->dev_list->head);
+			}
+		} else {
+			status = -ENOMEM;
+		}
+	} else {
+		status = -ENOMEM;
+	}
+	/* Store the DRV Object in the Registry */
+	if (DSP_SUCCEEDED(status))
+		status = cfg_set_object((u32) pdrv_object, REG_DRV_OBJECT);
+	if (DSP_SUCCEEDED(status)) {
+		*phDRVObject = pdrv_object;
+	} else {
+		kfree(pdrv_object->dev_list);
+		kfree(pdrv_object->dev_node_string);
+		/* Free the DRV Object */
+		kfree(pdrv_object);
+	}
+
+	DBC_ENSURE(DSP_FAILED(status) || pdrv_object);
+	return status;
+}
+
+/*
+ *  ======== drv_exit ========
+ *  Purpose:
+ *      Discontinue usage of the DRV module.
+ */
+void drv_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== = drv_destroy ======== =
+ *  purpose:
+ *      Invoked during bridge de-initialization
+ */
+int drv_destroy(struct drv_object *hDRVObject)
+{
+	int status = 0;
+	struct drv_object *pdrv_object = (struct drv_object *)hDRVObject;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pdrv_object);
+
+	/*
+	 *  Delete the List if it exists.Should not come here
+	 *  as the drv_remove_dev_object and the Last drv_request_resources
+	 *  removes the list if the lists are empty.
+	 */
+	kfree(pdrv_object->dev_list);
+	kfree(pdrv_object->dev_node_string);
+	kfree(pdrv_object);
+	/* Update the DRV Object in Registry to be 0 */
+	(void)cfg_set_object(0, REG_DRV_OBJECT);
+
+	return status;
+}
+
+/*
+ *  ======== drv_get_dev_object ========
+ *  Purpose:
+ *      Given a index, returns a handle to DevObject from the list.
+ */
+int drv_get_dev_object(u32 index, struct drv_object *hdrv_obj,
+			      struct dev_object **phDevObject)
+{
+	int status = 0;
+#ifdef CONFIG_BRIDGE_DEBUG
+	/* used only for Assertions and debug messages */
+	struct drv_object *pdrv_obj = (struct drv_object *)hdrv_obj;
+#endif
+	struct dev_object *dev_obj;
+	u32 i;
+	DBC_REQUIRE(pdrv_obj);
+	DBC_REQUIRE(phDevObject != NULL);
+	DBC_REQUIRE(index >= 0);
+	DBC_REQUIRE(refs > 0);
+	DBC_ASSERT(!(LST_IS_EMPTY(pdrv_obj->dev_list)));
+
+	dev_obj = (struct dev_object *)drv_get_first_dev_object();
+	for (i = 0; i < index; i++) {
+		dev_obj =
+		    (struct dev_object *)drv_get_next_dev_object((u32) dev_obj);
+	}
+	if (dev_obj) {
+		*phDevObject = (struct dev_object *)dev_obj;
+	} else {
+		*phDevObject = NULL;
+		status = -EPERM;
+	}
+
+	return status;
+}
+
+/*
+ *  ======== drv_get_first_dev_object ========
+ *  Purpose:
+ *      Retrieve the first Device Object handle from an internal linked list of
+ *      of DEV_OBJECTs maintained by DRV.
+ */
+u32 drv_get_first_dev_object(void)
+{
+	u32 dw_dev_object = 0;
+	struct drv_object *pdrv_obj;
+
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &pdrv_obj, REG_DRV_OBJECT))) {
+		if ((pdrv_obj->dev_list != NULL) &&
+		    !LST_IS_EMPTY(pdrv_obj->dev_list))
+			dw_dev_object = (u32) lst_first(pdrv_obj->dev_list);
+	}
+
+	return dw_dev_object;
+}
+
+/*
+ *  ======== DRV_GetFirstDevNodeString ========
+ *  Purpose:
+ *      Retrieve the first Device Extension from an internal linked list of
+ *      of Pointer to dev_node Strings maintained by DRV.
+ */
+u32 drv_get_first_dev_extension(void)
+{
+	u32 dw_dev_extension = 0;
+	struct drv_object *pdrv_obj;
+
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &pdrv_obj, REG_DRV_OBJECT))) {
+
+		if ((pdrv_obj->dev_node_string != NULL) &&
+		    !LST_IS_EMPTY(pdrv_obj->dev_node_string)) {
+			dw_dev_extension =
+			    (u32) lst_first(pdrv_obj->dev_node_string);
+		}
+	}
+
+	return dw_dev_extension;
+}
+
+/*
+ *  ======== drv_get_next_dev_object ========
+ *  Purpose:
+ *      Retrieve the next Device Object handle from an internal linked list of
+ *      of DEV_OBJECTs maintained by DRV, after having previously called
+ *      drv_get_first_dev_object() and zero or more DRV_GetNext.
+ */
+u32 drv_get_next_dev_object(u32 hdev_obj)
+{
+	u32 dw_next_dev_object = 0;
+	struct drv_object *pdrv_obj;
+
+	DBC_REQUIRE(hdev_obj != 0);
+
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &pdrv_obj, REG_DRV_OBJECT))) {
+
+		if ((pdrv_obj->dev_list != NULL) &&
+		    !LST_IS_EMPTY(pdrv_obj->dev_list)) {
+			dw_next_dev_object = (u32) lst_next(pdrv_obj->dev_list,
+							    (struct list_head *)
+							    hdev_obj);
+		}
+	}
+	return dw_next_dev_object;
+}
+
+/*
+ *  ======== drv_get_next_dev_extension ========
+ *  Purpose:
+ *      Retrieve the next Device Extension from an internal linked list of
+ *      of pointer to DevNodeString maintained by DRV, after having previously
+ *      called drv_get_first_dev_extension() and zero or more
+ *      drv_get_next_dev_extension().
+ */
+u32 drv_get_next_dev_extension(u32 hDevExtension)
+{
+	u32 dw_dev_extension = 0;
+	struct drv_object *pdrv_obj;
+
+	DBC_REQUIRE(hDevExtension != 0);
+
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &pdrv_obj, REG_DRV_OBJECT))) {
+		if ((pdrv_obj->dev_node_string != NULL) &&
+		    !LST_IS_EMPTY(pdrv_obj->dev_node_string)) {
+			dw_dev_extension =
+			    (u32) lst_next(pdrv_obj->dev_node_string,
+					   (struct list_head *)hDevExtension);
+		}
+	}
+
+	return dw_dev_extension;
+}
+
+/*
+ *  ======== drv_init ========
+ *  Purpose:
+ *      Initialize DRV module private state.
+ */
+int drv_init(void)
+{
+	s32 ret = 1;		/* function return value */
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
+
+	return ret;
+}
+
+/*
+ *  ======== drv_insert_dev_object ========
+ *  Purpose:
+ *      Insert a DevObject into the list of Manager object.
+ */
+int drv_insert_dev_object(struct drv_object *hDRVObject,
+				 struct dev_object *hdev_obj)
+{
+	int status = 0;
+	struct drv_object *pdrv_object = (struct drv_object *)hDRVObject;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hdev_obj != NULL);
+	DBC_REQUIRE(pdrv_object);
+	DBC_ASSERT(pdrv_object->dev_list);
+
+	lst_put_tail(pdrv_object->dev_list, (struct list_head *)hdev_obj);
+
+	DBC_ENSURE(DSP_SUCCEEDED(status)
+		   && !LST_IS_EMPTY(pdrv_object->dev_list));
+
+	return status;
+}
+
+/*
+ *  ======== drv_remove_dev_object ========
+ *  Purpose:
+ *      Search for and remove a DeviceObject from the given list of DRV
+ *      objects.
+ */
+int drv_remove_dev_object(struct drv_object *hDRVObject,
+				 struct dev_object *hdev_obj)
+{
+	int status = -EPERM;
+	struct drv_object *pdrv_object = (struct drv_object *)hDRVObject;
+	struct list_head *cur_elem;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pdrv_object);
+	DBC_REQUIRE(hdev_obj != NULL);
+
+	DBC_REQUIRE(pdrv_object->dev_list != NULL);
+	DBC_REQUIRE(!LST_IS_EMPTY(pdrv_object->dev_list));
+
+	/* Search list for p_proc_object: */
+	for (cur_elem = lst_first(pdrv_object->dev_list); cur_elem != NULL;
+	     cur_elem = lst_next(pdrv_object->dev_list, cur_elem)) {
+		/* If found, remove it. */
+		if ((struct dev_object *)cur_elem == hdev_obj) {
+			lst_remove_elem(pdrv_object->dev_list, cur_elem);
+			status = 0;
+			break;
+		}
+	}
+	/* Remove list if empty. */
+	if (LST_IS_EMPTY(pdrv_object->dev_list)) {
+		kfree(pdrv_object->dev_list);
+		pdrv_object->dev_list = NULL;
+	}
+	DBC_ENSURE((pdrv_object->dev_list == NULL) ||
+		   !LST_IS_EMPTY(pdrv_object->dev_list));
+
+	return status;
+}
+
+/*
+ *  ======== drv_request_resources ========
+ *  Purpose:
+ *      Requests  resources from the OS.
+ */
+int drv_request_resources(u32 dw_context, u32 *pDevNodeString)
+{
+	int status = 0;
+	struct drv_object *pdrv_object;
+	struct drv_ext *pszdev_node;
+
+	DBC_REQUIRE(dw_context != 0);
+	DBC_REQUIRE(pDevNodeString != NULL);
+
+	/*
+	 *  Allocate memory to hold the string. This will live untill
+	 *  it is freed in the Release resources. Update the driver object
+	 *  list.
+	 */
+
+	status = cfg_get_object((u32 *) &pdrv_object, REG_DRV_OBJECT);
+	if (DSP_SUCCEEDED(status)) {
+		pszdev_node = kzalloc(sizeof(struct drv_ext), GFP_KERNEL);
+		if (pszdev_node) {
+			lst_init_elem(&pszdev_node->link);
+			strncpy(pszdev_node->sz_string,
+				(char *)dw_context, MAXREGPATHLENGTH - 1);
+			pszdev_node->sz_string[MAXREGPATHLENGTH - 1] = '\0';
+			/* Update the Driver Object List */
+			*pDevNodeString = (u32) pszdev_node->sz_string;
+			lst_put_tail(pdrv_object->dev_node_string,
+				     (struct list_head *)pszdev_node);
+		} else {
+			status = -ENOMEM;
+			*pDevNodeString = 0;
+		}
+	} else {
+		dev_dbg(bridge, "%s: Failed to get Driver Object from Registry",
+			__func__);
+		*pDevNodeString = 0;
+	}
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && pDevNodeString != NULL &&
+		    !LST_IS_EMPTY(pdrv_object->dev_node_string)) ||
+		   (DSP_FAILED(status) && *pDevNodeString == 0));
+
+	return status;
+}
+
+/*
+ *  ======== drv_release_resources ========
+ *  Purpose:
+ *      Releases  resources from the OS.
+ */
+int drv_release_resources(u32 dw_context, struct drv_object *hdrv_obj)
+{
+	int status = 0;
+	struct drv_object *pdrv_object = (struct drv_object *)hdrv_obj;
+	struct drv_ext *pszdev_node;
+
+	/*
+	 *  Irrespective of the status go ahead and clean it
+	 *  The following will over write the status.
+	 */
+	for (pszdev_node = (struct drv_ext *)drv_get_first_dev_extension();
+	     pszdev_node != NULL; pszdev_node = (struct drv_ext *)
+	     drv_get_next_dev_extension((u32) pszdev_node)) {
+		if (!pdrv_object->dev_node_string) {
+			/* When this could happen? */
+			continue;
+		}
+		if ((u32) pszdev_node == dw_context) {
+			/* Found it */
+			/* Delete from the Driver object list */
+			lst_remove_elem(pdrv_object->dev_node_string,
+					(struct list_head *)pszdev_node);
+			kfree((void *)pszdev_node);
+			break;
+		}
+		/* Delete the List if it is empty */
+		if (LST_IS_EMPTY(pdrv_object->dev_node_string)) {
+			kfree(pdrv_object->dev_node_string);
+			pdrv_object->dev_node_string = NULL;
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== request_bridge_resources ========
+ *  Purpose:
+ *      Reserves shared memory for bridge.
+ */
+static int request_bridge_resources(struct cfg_hostres *res)
+{
+	int status = 0;
+	struct cfg_hostres *host_res = res;
+
+	/* num_mem_windows must not be more than CFG_MAXMEMREGISTERS */
+	host_res->num_mem_windows = 2;
+
+	/* First window is for DSP internal memory */
+	host_res->dw_sys_ctrl_base = ioremap(OMAP_SYSC_BASE, OMAP_SYSC_SIZE);
+	dev_dbg(bridge, "dw_mem_base[0] 0x%x\n", host_res->dw_mem_base[0]);
+	dev_dbg(bridge, "dw_mem_base[3] 0x%x\n", host_res->dw_mem_base[3]);
+	dev_dbg(bridge, "dw_dmmu_base %p\n", host_res->dw_dmmu_base);
+
+	/* for 24xx base port is not mapping the mamory for DSP
+	 * internal memory TODO Do a ioremap here */
+	/* Second window is for DSP external memory shared with MPU */
+
+	/* These are hard-coded values */
+	host_res->birq_registers = 0;
+	host_res->birq_attrib = 0;
+	host_res->dw_offset_for_monitor = 0;
+	host_res->dw_chnl_offset = 0;
+	/* CHNL_MAXCHANNELS */
+	host_res->dw_num_chnls = CHNL_MAXCHANNELS;
+	host_res->dw_chnl_buf_size = 0x400;
+
+	return status;
+}
+
+/*
+ *  ======== drv_request_bridge_res_dsp ========
+ *  Purpose:
+ *      Reserves shared memory for bridge.
+ */
+int drv_request_bridge_res_dsp(void **phost_resources)
+{
+	int status = 0;
+	struct cfg_hostres *host_res;
+	u32 dw_buff_size;
+	u32 dma_addr;
+	u32 shm_size;
+	struct drv_data *drv_datap = dev_get_drvdata(bridge);
+
+	dw_buff_size = sizeof(struct cfg_hostres);
+
+	host_res = kzalloc(dw_buff_size, GFP_KERNEL);
+
+	if (host_res != NULL) {
+		request_bridge_resources(host_res);
+		/* num_mem_windows must not be more than CFG_MAXMEMREGISTERS */
+		host_res->num_mem_windows = 4;
+
+		host_res->dw_mem_base[0] = 0;
+		host_res->dw_mem_base[2] = (u32) ioremap(OMAP_DSP_MEM1_BASE,
+							 OMAP_DSP_MEM1_SIZE);
+		host_res->dw_mem_base[3] = (u32) ioremap(OMAP_DSP_MEM2_BASE,
+							 OMAP_DSP_MEM2_SIZE);
+		host_res->dw_mem_base[4] = (u32) ioremap(OMAP_DSP_MEM3_BASE,
+							 OMAP_DSP_MEM3_SIZE);
+		host_res->dw_per_base = ioremap(OMAP_PER_CM_BASE,
+						OMAP_PER_CM_SIZE);
+		host_res->dw_per_pm_base = (u32) ioremap(OMAP_PER_PRM_BASE,
+							 OMAP_PER_PRM_SIZE);
+		host_res->dw_core_pm_base = (u32) ioremap(OMAP_CORE_PRM_BASE,
+							  OMAP_CORE_PRM_SIZE);
+		host_res->dw_dmmu_base = ioremap(OMAP_DMMU_BASE,
+						 OMAP_DMMU_SIZE);
+
+		dev_dbg(bridge, "dw_mem_base[0] 0x%x\n",
+			host_res->dw_mem_base[0]);
+		dev_dbg(bridge, "dw_mem_base[1] 0x%x\n",
+			host_res->dw_mem_base[1]);
+		dev_dbg(bridge, "dw_mem_base[2] 0x%x\n",
+			host_res->dw_mem_base[2]);
+		dev_dbg(bridge, "dw_mem_base[3] 0x%x\n",
+			host_res->dw_mem_base[3]);
+		dev_dbg(bridge, "dw_mem_base[4] 0x%x\n",
+			host_res->dw_mem_base[4]);
+		dev_dbg(bridge, "dw_dmmu_base %p\n", host_res->dw_dmmu_base);
+
+		shm_size = drv_datap->shm_size;
+		if (shm_size >= 0x10000) {
+			/* Allocate Physically contiguous,
+			 * non-cacheable  memory */
+			host_res->dw_mem_base[1] =
+			    (u32) mem_alloc_phys_mem(shm_size, 0x100000,
+						     &dma_addr);
+			if (host_res->dw_mem_base[1] == 0) {
+				status = -ENOMEM;
+				pr_err("shm reservation Failed\n");
+			} else {
+				host_res->dw_mem_length[1] = shm_size;
+				host_res->dw_mem_phys[1] = dma_addr;
+
+				dev_dbg(bridge, "%s: Bridge shm address 0x%x "
+					"dma_addr %x size %x\n", __func__,
+					host_res->dw_mem_base[1],
+					dma_addr, shm_size);
+			}
+		}
+		if (DSP_SUCCEEDED(status)) {
+			/* These are hard-coded values */
+			host_res->birq_registers = 0;
+			host_res->birq_attrib = 0;
+			host_res->dw_offset_for_monitor = 0;
+			host_res->dw_chnl_offset = 0;
+			/* CHNL_MAXCHANNELS */
+			host_res->dw_num_chnls = CHNL_MAXCHANNELS;
+			host_res->dw_chnl_buf_size = 0x400;
+			dw_buff_size = sizeof(struct cfg_hostres);
+		}
+		*phost_resources = host_res;
+	}
+	/* End Mem alloc */
+	return status;
+}
+
+void mem_ext_phys_pool_init(u32 poolPhysBase, u32 poolSize)
+{
+	u32 pool_virt_base;
+
+	/* get the virtual address for the physical memory pool passed */
+	pool_virt_base = (u32) ioremap(poolPhysBase, poolSize);
+
+	if ((void **)pool_virt_base == NULL) {
+		pr_err("%s: external physical memory map failed\n", __func__);
+		ext_phys_mem_pool_enabled = false;
+	} else {
+		ext_mem_pool.phys_mem_base = poolPhysBase;
+		ext_mem_pool.phys_mem_size = poolSize;
+		ext_mem_pool.virt_mem_base = pool_virt_base;
+		ext_mem_pool.next_phys_alloc_ptr = poolPhysBase;
+		ext_phys_mem_pool_enabled = true;
+	}
+}
+
+void mem_ext_phys_pool_release(void)
+{
+	if (ext_phys_mem_pool_enabled) {
+		iounmap((void *)(ext_mem_pool.virt_mem_base));
+		ext_phys_mem_pool_enabled = false;
+	}
+}
+
+/*
+ *  ======== mem_ext_phys_mem_alloc ========
+ *  Purpose:
+ *     Allocate physically contiguous, uncached memory from external memory pool
+ */
+
+static void *mem_ext_phys_mem_alloc(u32 bytes, u32 align, OUT u32 * pPhysAddr)
+{
+	u32 new_alloc_ptr;
+	u32 offset;
+	u32 virt_addr;
+
+	if (align == 0)
+		align = 1;
+
+	if (bytes > ((ext_mem_pool.phys_mem_base + ext_mem_pool.phys_mem_size)
+		     - ext_mem_pool.next_phys_alloc_ptr)) {
+		pPhysAddr = NULL;
+		return NULL;
+	} else {
+		offset = (ext_mem_pool.next_phys_alloc_ptr & (align - 1));
+		if (offset == 0)
+			new_alloc_ptr = ext_mem_pool.next_phys_alloc_ptr;
+		else
+			new_alloc_ptr = (ext_mem_pool.next_phys_alloc_ptr) +
+			    (align - offset);
+		if ((new_alloc_ptr + bytes) <=
+		    (ext_mem_pool.phys_mem_base + ext_mem_pool.phys_mem_size)) {
+			/* we can allocate */
+			*pPhysAddr = new_alloc_ptr;
+			ext_mem_pool.next_phys_alloc_ptr =
+			    new_alloc_ptr + bytes;
+			virt_addr =
+			    ext_mem_pool.virt_mem_base + (new_alloc_ptr -
+							  ext_mem_pool.
+							  phys_mem_base);
+			return (void *)virt_addr;
+		} else {
+			*pPhysAddr = 0;
+			return NULL;
+		}
+	}
+}
+
+/*
+ *  ======== mem_alloc_phys_mem ========
+ *  Purpose:
+ *      Allocate physically contiguous, uncached memory
+ */
+void *mem_alloc_phys_mem(u32 byte_size, u32 ulAlign, OUT u32 * pPhysicalAddress)
+{
+	void *va_mem = NULL;
+	dma_addr_t pa_mem;
+
+	if (byte_size > 0) {
+		if (ext_phys_mem_pool_enabled) {
+			va_mem = mem_ext_phys_mem_alloc(byte_size, ulAlign,
+							(u32 *) &pa_mem);
+		} else
+			va_mem = dma_alloc_coherent(NULL, byte_size, &pa_mem,
+								GFP_KERNEL);
+		if (va_mem == NULL)
+			*pPhysicalAddress = 0;
+		else
+			*pPhysicalAddress = pa_mem;
+	}
+	return va_mem;
+}
+
+/*
+ *  ======== mem_free_phys_mem ========
+ *  Purpose:
+ *      Free the given block of physically contiguous memory.
+ */
+void mem_free_phys_mem(void *pVirtualAddress, u32 pPhysicalAddress,
+		       u32 byte_size)
+{
+	DBC_REQUIRE(pVirtualAddress != NULL);
+
+	if (!ext_phys_mem_pool_enabled)
+		dma_free_coherent(NULL, byte_size, pVirtualAddress,
+				  pPhysicalAddress);
+}

drivers/staging/tidspbridge/rmgr/drv_interface.c

+/*
+ * drv_interface.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP/BIOS Bridge driver interface.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+
+#include <dspbridge/host_os.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+
+#ifdef MODULE
+#include <linux/module.h>
+#endif
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/cdev.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/services.h>
+#include <dspbridge/clk.h>
+#include <dspbridge/sync.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/dspapi-ioctl.h>
+#include <dspbridge/dspapi.h>
+#include <dspbridge/dspdrv.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/pwr.h>
+
+/*  ----------------------------------- This */
+#include <drv_interface.h>
+
+#include <dspbridge/cfg.h>
+#include <dspbridge/resourcecleanup.h>
+#include <dspbridge/chnl.h>
+#include <dspbridge/proc.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/drvdefs.h>
+#include <dspbridge/drv.h>
+
+#ifdef CONFIG_BRIDGE_DVFS
+#include <mach-omap2/omap3-opp.h>
+#endif
+
+#define BRIDGE_NAME "C6410"
+/*  ----------------------------------- Globals */
+#define DRIVER_NAME  "DspBridge"
+#define DSPBRIDGE_VERSION	"0.3"
+s32 dsp_debug;
+
+struct platform_device *omap_dspbridge_dev;
+struct device *bridge;
+
+/* This is a test variable used by Bridge to test different sleep states */
+s32 dsp_test_sleepstate;
+
+static struct cdev bridge_cdev;
+
+static struct class *bridge_class;
+
+static u32 driver_context;
+static s32 driver_major;
+static char *base_img;
+char *iva_img;
+static s32 shm_size = 0x500000;	/* 5 MB */
+static int tc_wordswapon;	/* Default value is always false */
+#ifdef CONFIG_BRIDGE_RECOVERY
+#define REC_TIMEOUT 5000	/*recovery timeout in msecs */
+static atomic_t bridge_cref;	/* number of bridge open handles */
+static struct workqueue_struct *bridge_rec_queue;
+static struct work_struct bridge_recovery_work;
+static DECLARE_COMPLETION(bridge_comp);
+static DECLARE_COMPLETION(bridge_open_comp);
+static bool recover;
+#endif
+
+#ifdef CONFIG_PM
+struct omap34_xx_bridge_suspend_data {
+	int suspended;
+	wait_queue_head_t suspend_wq;
+};
+
+static struct omap34_xx_bridge_suspend_data bridge_suspend_data;
+
+static int omap34_xxbridge_suspend_lockout(struct omap34_xx_bridge_suspend_data
+					   *s, struct file *f)
+{
+	if ((s)->suspended) {
+		if ((f)->f_flags & O_NONBLOCK)
+			return -EPERM;
+		wait_event_interruptible((s)->suspend_wq, (s)->suspended == 0);
+	}
+	return 0;
+}
+#endif
+
+module_param(dsp_debug, int, 0);
+MODULE_PARM_DESC(dsp_debug, "Wait after loading DSP image. default = false");
+
+module_param(dsp_test_sleepstate, int, 0);
+MODULE_PARM_DESC(dsp_test_sleepstate, "DSP Sleep state = 0");
+
+module_param(base_img, charp, 0);
+MODULE_PARM_DESC(base_img, "DSP base image, default = NULL");
+
+module_param(shm_size, int, 0);
+MODULE_PARM_DESC(shm_size, "shm size, default = 4 MB, minimum = 64 KB");
+
+module_param(tc_wordswapon, int, 0);
+MODULE_PARM_DESC(tc_wordswapon, "TC Word Swap Option. default = 0");
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DSPBRIDGE_VERSION);
+
+static char *driver_name = DRIVER_NAME;
+
+static const struct file_operations bridge_fops = {
+	.open = bridge_open,
+	.release = bridge_release,
+	.unlocked_ioctl = bridge_ioctl,
+	.mmap = bridge_mmap,
+};
+
+#ifdef CONFIG_PM
+static u32 time_out = 1000;
+#ifdef CONFIG_BRIDGE_DVFS
+s32 dsp_max_opps = VDD1_OPP5;
+#endif
+
+/* Maximum Opps that can be requested by IVA */
+/*vdd1 rate table */
+#ifdef CONFIG_BRIDGE_DVFS
+const struct omap_opp vdd1_rate_table_bridge[] = {
+	{0, 0, 0},
+	/*OPP1 */
+	{S125M, VDD1_OPP1, 0},
+	/*OPP2 */
+	{S250M, VDD1_OPP2, 0},
+	/*OPP3 */
+	{S500M, VDD1_OPP3, 0},
+	/*OPP4 */
+	{S550M, VDD1_OPP4, 0},
+	/*OPP5 */
+	{S600M, VDD1_OPP5, 0},
+};
+#endif
+#endif
+
+struct dspbridge_platform_data *omap_dspbridge_pdata;
+
+u32 vdd1_dsp_freq[6][4] = {
+	{0, 0, 0, 0},
+	/*OPP1 */
+	{0, 90000, 0, 86000},
+	/*OPP2 */
+	{0, 180000, 80000, 170000},
+	/*OPP3 */
+	{0, 360000, 160000, 340000},
+	/*OPP4 */
+	{0, 396000, 325000, 376000},
+	/*OPP5 */
+	{0, 430000, 355000, 430000},
+};
+
+#ifdef CONFIG_BRIDGE_RECOVERY
+static void bridge_recover(struct work_struct *work)
+{
+	struct dev_object *dev;
+	struct cfg_devnode *dev_node;
+	if (atomic_read(&bridge_cref)) {
+		INIT_COMPLETION(bridge_comp);
+		while (!wait_for_completion_timeout(&bridge_comp,
+						msecs_to_jiffies(REC_TIMEOUT)))
+			pr_info("%s:%d handle(s) still opened\n",
+					__func__, atomic_read(&bridge_cref));
+	}
+	dev = dev_get_first();
+	dev_get_dev_node(dev, &dev_node);
+	if (!dev_node || DSP_FAILED(proc_auto_start(dev_node, dev)))
+		pr_err("DSP could not be restarted\n");
+	recover = false;
+	complete_all(&bridge_open_comp);
+}
+
+void bridge_recover_schedule(void)
+{
+	INIT_COMPLETION(bridge_open_comp);
+	recover = true;
+	queue_work(bridge_rec_queue, &bridge_recovery_work);
+}
+#endif
+#ifdef CONFIG_BRIDGE_DVFS
+static int dspbridge_scale_notification(struct notifier_block *op,
+		unsigned long val, void *ptr)
+{
+	struct dspbridge_platform_data *pdata =
+					omap_dspbridge_dev->dev.platform_data;
+
+	if (CPUFREQ_POSTCHANGE == val && pdata->dsp_get_opp)
+		pwr_pm_post_scale(PRCM_VDD1, pdata->dsp_get_opp());
+
+	return 0;
+}
+
+static struct notifier_block iva_clk_notifier = {
+	.notifier_call = dspbridge_scale_notification,
+	NULL,
+};
+#endif
+
+/**
+ * omap3_bridge_startup() - perform low lever initializations
+ * @pdev:      pointer to platform device
+ *
+ * Initializes recovery, PM and DVFS required data, before calling
+ * clk and memory init routines.
+ */
+static int omap3_bridge_startup(struct platform_device *pdev)
+{
+	struct dspbridge_platform_data *pdata = pdev->dev.platform_data;
+	struct drv_data *drv_datap = NULL;
+	u32 phys_membase, phys_memsize;
+	int err;
+
+#ifdef CONFIG_BRIDGE_RECOVERY
+	bridge_rec_queue = create_workqueue("bridge_rec_queue");
+	INIT_WORK(&bridge_recovery_work, bridge_recover);
+	INIT_COMPLETION(bridge_comp);
+#endif
+
+#ifdef CONFIG_PM
+	/* Initialize the wait queue */
+	bridge_suspend_data.suspended = 0;
+	init_waitqueue_head(&bridge_suspend_data.suspend_wq);
+
+#ifdef CONFIG_BRIDGE_DVFS
+	for (i = 0; i < 6; i++)
+		pdata->mpu_speed[i] = vdd1_rate_table_bridge[i].rate;
+
+	err = cpufreq_register_notifier(&iva_clk_notifier,
+					CPUFREQ_TRANSITION_NOTIFIER);
+	if (err)
+		pr_err("%s: clk_notifier_register failed for iva2_ck\n",
+								__func__);
+#endif
+#endif
+
+	dsp_clk_init();
+	services_init();
+
+	drv_datap = kzalloc(sizeof(struct drv_data), GFP_KERNEL);
+	if (!drv_datap) {
+		err = -ENOMEM;
+		goto err1;
+	}
+
+	drv_datap->shm_size = shm_size;
+	drv_datap->tc_wordswapon = tc_wordswapon;
+
+	if (base_img) {
+		drv_datap->base_img = kmalloc(strlen(base_img) + 1, GFP_KERNEL);
+		if (!drv_datap->base_img) {
+			err = -ENOMEM;
+			goto err2;
+		}
+		strncpy(drv_datap->base_img, base_img, strlen(base_img) + 1);
+	}
+
+	dev_set_drvdata(bridge, drv_datap);
+
+	if (shm_size < 0x10000) {	/* 64 KB */
+		err = -EINVAL;
+		pr_err("%s: shm size must be at least 64 KB\n", __func__);
+		goto err3;
+	}
+	dev_dbg(bridge, "%s: requested shm_size = 0x%x\n", __func__, shm_size);
+
+	phys_membase = pdata->phys_mempool_base;
+	phys_memsize = pdata->phys_mempool_size;
+	if (phys_membase > 0 && phys_memsize > 0)
+		mem_ext_phys_pool_init(phys_membase, phys_memsize);
+
+	if (tc_wordswapon)
+		dev_dbg(bridge, "%s: TC Word Swap is enabled\n", __func__);
+
+	driver_context = dsp_init(&err);
+	if (err) {
+		pr_err("DSP Bridge driver initialization failed\n");
+		goto err4;
+	}
+
+	return 0;
+
+err4:
+	mem_ext_phys_pool_release();
+err3:
+	kfree(drv_datap->base_img);
+err2:
+	kfree(drv_datap);
+err1:
+#ifdef CONFIG_BRIDGE_DVFS
+	cpufreq_unregister_notifier(&iva_clk_notifier,
+					CPUFREQ_TRANSITION_NOTIFIER);
+#endif
+	dsp_clk_exit();
+	services_exit();
+
+	return err;
+}
+
+static int __devinit omap34_xx_bridge_probe(struct platform_device *pdev)
+{
+	int err;
+	dev_t dev = 0;
+#ifdef CONFIG_BRIDGE_DVFS
+	int i = 0;
+#endif
+
+	omap_dspbridge_dev = pdev;
+
+	/* Global bridge device */
+	bridge = &omap_dspbridge_dev->dev;
+
+	/* Bridge low level initializations */
+	err = omap3_bridge_startup(pdev);
+	if (err)
+		goto err1;
+
+	/* use 2.6 device model */
+	err = alloc_chrdev_region(&dev, 0, 1, driver_name);
+	if (err) {
+		pr_err("%s: Can't get major %d\n", __func__, driver_major);
+		goto err1;
+	}
+
+	cdev_init(&bridge_cdev, &bridge_fops);
+	bridge_cdev.owner = THIS_MODULE;
+
+	err = cdev_add(&bridge_cdev, dev, 1);
+	if (err) {
+		pr_err("%s: Failed to add bridge device\n", __func__);
+		goto err2;
+	}
+
+	/* udev support */
+	bridge_class = class_create(THIS_MODULE, "ti_bridge");
+	if (IS_ERR(bridge_class)) {
+		pr_err("%s: Error creating bridge class\n", __func__);
+		goto err3;
+	}
+
+	driver_major = MAJOR(dev);
+	device_create(bridge_class, NULL, MKDEV(driver_major, 0),
+		      NULL, "DspBridge");
+	pr_info("DSP Bridge driver loaded\n");
+
+	return 0;
+
+err3:
+	cdev_del(&bridge_cdev);
+err2:
+	unregister_chrdev_region(dev, 1);
+err1:
+	return err;
+}
+
+static int __devexit omap34_xx_bridge_remove(struct platform_device *pdev)
+{
+	dev_t devno;
+	bool ret;
+	int status = 0;
+	void *hdrv_obj = NULL;
+
+	status = cfg_get_object((u32 *) &hdrv_obj, REG_DRV_OBJECT);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+#ifdef CONFIG_BRIDGE_DVFS
+	if (cpufreq_unregister_notifier(&iva_clk_notifier,
+						CPUFREQ_TRANSITION_NOTIFIER))
+		pr_err("%s: cpufreq_unregister_notifier failed for iva2_ck\n",
+		       __func__);
+#endif /* #ifdef CONFIG_BRIDGE_DVFS */
+
+	if (driver_context) {
+		/* Put the DSP in reset state */
+		ret = dsp_deinit(driver_context);
+		driver_context = 0;
+		DBC_ASSERT(ret == true);
+	}
+
+func_cont:
+	mem_ext_phys_pool_release();
+
+	dsp_clk_exit();
+	services_exit();
+
+	devno = MKDEV(driver_major, 0);
+	cdev_del(&bridge_cdev);
+	unregister_chrdev_region(devno, 1);
+	if (bridge_class) {
+		/* remove the device from sysfs */
+		device_destroy(bridge_class, MKDEV(driver_major, 0));
+		class_destroy(bridge_class);
+
+	}
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int BRIDGE_SUSPEND(struct platform_device *pdev, pm_message_t state)
+{
+	u32 status;
+	u32 command = PWR_EMERGENCYDEEPSLEEP;
+
+	status = pwr_sleep_dsp(command, time_out);
+	if (DSP_FAILED(status))
+		return -1;
+
+	bridge_suspend_data.suspended = 1;
+	return 0;
+}
+
+static int BRIDGE_RESUME(struct platform_device *pdev)
+{
+	u32 status;
+
+	status = pwr_wake_dsp(time_out);
+	if (DSP_FAILED(status))
+		return -1;
+
+	bridge_suspend_data.suspended = 0;
+	wake_up(&bridge_suspend_data.suspend_wq);
+	return 0;
+}
+#else
+#define BRIDGE_SUSPEND NULL
+#define BRIDGE_RESUME NULL
+#endif
+
+static struct platform_driver bridge_driver = {
+	.driver = {
+		   .name = BRIDGE_NAME,
+		   },
+	.probe = omap34_xx_bridge_probe,
+	.remove = __devexit_p(omap34_xx_bridge_remove),
+	.suspend = BRIDGE_SUSPEND,
+	.resume = BRIDGE_RESUME,
+};
+
+static int __init bridge_init(void)
+{
+	return platform_driver_register(&bridge_driver);
+}
+
+static void __exit bridge_exit(void)
+{
+	platform_driver_unregister(&bridge_driver);
+}
+
+/*
+ * This function is called when an application opens handle to the
+ * bridge driver.
+ */
+static int bridge_open(struct inode *ip, struct file *filp)
+{
+	int status = 0;
+	struct process_context *pr_ctxt = NULL;
+
+	/*
+	 * Allocate a new process context and insert it into global
+	 * process context list.
+	 */
+
+#ifdef CONFIG_BRIDGE_RECOVERY
+	if (recover) {
+		if (filp->f_flags & O_NONBLOCK ||
+			wait_for_completion_interruptible(&bridge_open_comp))
+			return -EBUSY;
+	}
+#endif
+	pr_ctxt = kzalloc(sizeof(struct process_context), GFP_KERNEL);
+	if (pr_ctxt) {
+		pr_ctxt->res_state = PROC_RES_ALLOCATED;
+		spin_lock_init(&pr_ctxt->dmm_map_lock);
+		INIT_LIST_HEAD(&pr_ctxt->dmm_map_list);
+		spin_lock_init(&pr_ctxt->dmm_rsv_lock);
+		INIT_LIST_HEAD(&pr_ctxt->dmm_rsv_list);
+		mutex_init(&pr_ctxt->node_mutex);
+		mutex_init(&pr_ctxt->strm_mutex);
+	} else {
+		status = -ENOMEM;
+	}
+
+	filp->private_data = pr_ctxt;
+#ifdef CONFIG_BRIDGE_RECOVERY
+	if (!status)
+		atomic_inc(&bridge_cref);
+#endif
+	return status;
+}
+
+/*
+ * This function is called when an application closes handle to the bridge
+ * driver.
+ */
+static int bridge_release(struct inode *ip, struct file *filp)
+{
+	int status = 0;
+	struct process_context *pr_ctxt;
+
+	if (!filp->private_data) {
+		status = -EIO;
+		goto err;
+	}
+
+	pr_ctxt = filp->private_data;
+	flush_signals(current);
+	drv_remove_all_resources(pr_ctxt);
+	proc_detach(pr_ctxt);
+	kfree(pr_ctxt);
+
+	filp->private_data = NULL;
+
+err:
+#ifdef CONFIG_BRIDGE_RECOVERY
+	if (!atomic_dec_return(&bridge_cref))
+		complete(&bridge_comp);
+#endif
+	return status;
+}
+
+/* This function provides IO interface to the bridge driver. */
+static long bridge_ioctl(struct file *filp, unsigned int code,
+			 unsigned long args)
+{
+	int status;
+	u32 retval = 0;
+	union Trapped_Args buf_in;
+
+	DBC_REQUIRE(filp != NULL);
+#ifdef CONFIG_BRIDGE_RECOVERY
+	if (recover) {
+		status = -EIO;
+		goto err;
+	}
+#endif
+#ifdef CONFIG_PM
+	status = omap34_xxbridge_suspend_lockout(&bridge_suspend_data, filp);
+	if (status != 0)
+		return status;
+#endif
+
+	if (!filp->private_data) {
+		status = -EIO;
+		goto err;
+	}
+
+	status = copy_from_user(&buf_in, (union Trapped_Args *)args,
+				sizeof(union Trapped_Args));
+
+	if (!status) {
+		status = api_call_dev_ioctl(code, &buf_in, &retval,
+					     filp->private_data);
+
+		if (DSP_SUCCEEDED(status)) {
+			status = retval;
+		} else {
+			dev_dbg(bridge, "%s: IOCTL Failed, code: 0x%x "
+				"status 0x%x\n", __func__, code, status);
+			status = -1;
+		}
+
+	}
+
+err:
+	return status;
+}
+
+/* This function maps kernel space memory to user space memory. */
+static int bridge_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	u32 offset = vma->vm_pgoff << PAGE_SHIFT;
+	u32 status;
+
+	DBC_ASSERT(vma->vm_start < vma->vm_end);
+
+	vma->vm_flags |= VM_RESERVED | VM_IO;
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	dev_dbg(bridge, "%s: vm filp %p offset %x start %lx end %lx page_prot "
+		"%lx flags %lx\n", __func__, filp, offset,
+		vma->vm_start, vma->vm_end, vma->vm_page_prot, vma->vm_flags);
+
+	status = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+				 vma->vm_end - vma->vm_start,
+				 vma->vm_page_prot);
+	if (status != 0)
+		status = -EAGAIN;
+
+	return status;
+}
+
+/* To remove all process resources before removing the process from the
+ * process context list */
+int drv_remove_all_resources(void *hPCtxt)
+{
+	int status = 0;
+	struct process_context *ctxt = (struct process_context *)hPCtxt;
+	drv_remove_all_strm_res_elements(ctxt);
+	drv_remove_all_node_res_elements(ctxt);
+	drv_remove_all_dmm_res_elements(ctxt);
+	ctxt->res_state = PROC_RES_FREED;
+	return status;
+}
+
+/* Bridge driver initialization and de-initialization functions */
+module_init(bridge_init);
+module_exit(bridge_exit);

drivers/staging/tidspbridge/rmgr/drv_interface.h

+/*
+ * drv_interface.h
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef	_DRV_INTERFACE_H_
+#define _DRV_INTERFACE_H_
+
+/* Prototypes for all functions in this bridge */
+static int __init bridge_init(void);	/* Initialize bridge */
+static void __exit bridge_exit(void);	/* Opposite of initialize */
+static int bridge_open(struct inode *, struct file *);	/* Open */
+static int bridge_release(struct inode *, struct file *);	/* Release */
+static long bridge_ioctl(struct file *, unsigned int, unsigned long);
+static int bridge_mmap(struct file *filp, struct vm_area_struct *vma);
+#endif /* ifndef _DRV_INTERFACE_H_ */

drivers/staging/tidspbridge/rmgr/dspdrv.c

+/*
+ * dspdrv.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Interface to allocate and free bridge resources.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/drv.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/dspapi.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/mgr.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/dspdrv.h>
+
+/*
+ *  ======== dsp_init ========
+ *  	Allocates bridge resources. Loads a base image onto DSP, if specified.
+ */
+u32 dsp_init(OUT u32 *init_status)
+{
+	char dev_node[MAXREGPATHLENGTH] = "TIOMAP1510";
+	int status = -EPERM;
+	struct drv_object *drv_obj = NULL;
+	u32 device_node;
+	u32 device_node_string;
+
+	if (!api_init())
+		goto func_cont;
+
+	status = drv_create(&drv_obj);
+	if (DSP_FAILED(status)) {
+		api_exit();
+		goto func_cont;
+	}
+
+	/* End drv_create */
+	/* Request Resources */
+	status = drv_request_resources((u32) &dev_node, &device_node_string);
+	if (DSP_SUCCEEDED(status)) {
+		/* Attempt to Start the Device */
+		status = dev_start_device((struct cfg_devnode *)
+					  device_node_string);
+		if (DSP_FAILED(status))
+			(void)drv_release_resources
+			    ((u32) device_node_string, drv_obj);
+	} else {
+		dev_dbg(bridge, "%s: drv_request_resources Failed\n", __func__);
+		status = -EPERM;
+	}
+
+	/* Unwind whatever was loaded */
+	if (DSP_FAILED(status)) {
+		/* irrespective of the status of dev_remove_device we conitinue
+		 * unloading. Get the Driver Object iterate through and remove.
+		 * Reset the status to E_FAIL to avoid going through
+		 * api_init_complete2. */
+		for (device_node = drv_get_first_dev_extension();
+		     device_node != 0;
+		     device_node = drv_get_next_dev_extension(device_node)) {
+			(void)dev_remove_device((struct cfg_devnode *)
+						device_node);
+			(void)drv_release_resources((u32) device_node, drv_obj);
+		}
+		/* Remove the Driver Object */
+		(void)drv_destroy(drv_obj);
+		drv_obj = NULL;
+		api_exit();
+		dev_dbg(bridge, "%s: Logical device failed init\n", __func__);
+	}			/* Unwinding the loaded drivers */
+func_cont:
+	/* Attempt to Start the Board */
+	if (DSP_SUCCEEDED(status)) {
+		/* BRD_AutoStart could fail if the dsp execuetable is not the
+		 * correct one. We should not propagate that error
+		 * into the device loader. */
+		(void)api_init_complete2();
+	} else {
+		dev_dbg(bridge, "%s: Failed\n", __func__);
+	}			/* End api_init_complete2 */
+	DBC_ENSURE((DSP_SUCCEEDED(status) && drv_obj != NULL) ||
+		   (DSP_FAILED(status) && drv_obj == NULL));
+	*init_status = status;
+	/* Return the Driver Object */
+	return (u32) drv_obj;
+}
+
+/*
+ *  ======== dsp_deinit ========
+ *  	Frees the resources allocated for bridge.
+ */
+bool dsp_deinit(u32 deviceContext)
+{
+	bool ret = true;
+	u32 device_node;
+	struct mgr_object *mgr_obj = NULL;
+
+	while ((device_node = drv_get_first_dev_extension()) != 0) {
+		(void)dev_remove_device((struct cfg_devnode *)device_node);
+
+		(void)drv_release_resources((u32) device_node,
+					    (struct drv_object *)deviceContext);
+	}
+
+	(void)drv_destroy((struct drv_object *)deviceContext);
+
+	/* Get the Manager Object from Registry
+	 * MGR Destroy will unload the DCD dll */
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &mgr_obj, REG_MGR_OBJECT)))
+		(void)mgr_destroy(mgr_obj);
+
+	api_exit();
+
+	return ret;
+}

drivers/staging/tidspbridge/rmgr/mgr.c

+/*
+ * mgr.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Implementation of Manager interface to the device object at the
+ * driver level. This queries the NDB data base and retrieves the
+ * data about Node and Processor.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+#include <dspbridge/sync.h>
+
+/*  ----------------------------------- Others */
+#include <dspbridge/dbdcd.h>
+#include <dspbridge/drv.h>
+#include <dspbridge/dev.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/mgr.h>
+
+/*  ----------------------------------- Defines, Data Structures, Typedefs */
+#define ZLDLLNAME               ""
+
+struct mgr_object {
+	struct dcd_manager *hdcd_mgr;	/* Proc/Node data manager */
+};
+
+/*  ----------------------------------- Globals */
+static u32 refs;
+
+/*
+ *  ========= mgr_create =========
+ *  Purpose:
+ *      MGR Object gets created only once during driver Loading.
+ */
+int mgr_create(OUT struct mgr_object **phMgrObject,
+		      struct cfg_devnode *dev_node_obj)
+{
+	int status = 0;
+	struct mgr_object *pmgr_obj = NULL;
+
+	DBC_REQUIRE(phMgrObject != NULL);
+	DBC_REQUIRE(refs > 0);
+
+	pmgr_obj = kzalloc(sizeof(struct mgr_object), GFP_KERNEL);
+	if (pmgr_obj) {
+		status = dcd_create_manager(ZLDLLNAME, &pmgr_obj->hdcd_mgr);
+		if (DSP_SUCCEEDED(status)) {
+			/* If succeeded store the handle in the MGR Object */
+			status = cfg_set_object((u32) pmgr_obj, REG_MGR_OBJECT);
+			if (DSP_SUCCEEDED(status)) {
+				*phMgrObject = pmgr_obj;
+			} else {
+				dcd_destroy_manager(pmgr_obj->hdcd_mgr);
+				kfree(pmgr_obj);
+			}
+		} else {
+			/* failed to Create DCD Manager */
+			kfree(pmgr_obj);
+		}
+	} else {
+		status = -ENOMEM;
+	}
+
+	DBC_ENSURE(DSP_FAILED(status) || pmgr_obj);
+	return status;
+}
+
+/*
+ *  ========= mgr_destroy =========
+ *     This function is invoked during bridge driver unloading.Frees MGR object.
+ */
+int mgr_destroy(struct mgr_object *hmgr_obj)
+{
+	int status = 0;
+	struct mgr_object *pmgr_obj = (struct mgr_object *)hmgr_obj;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hmgr_obj);
+
+	/* Free resources */
+	if (hmgr_obj->hdcd_mgr)
+		dcd_destroy_manager(hmgr_obj->hdcd_mgr);
+
+	kfree(pmgr_obj);
+	/* Update the Registry with NULL for MGR Object */
+	(void)cfg_set_object(0, REG_MGR_OBJECT);
+
+	return status;
+}
+
+/*
+ *  ======== mgr_enum_node_info ========
+ *      Enumerate and get configuration information about nodes configured
+ *      in the node database.
+ */
+int mgr_enum_node_info(u32 node_id, OUT struct dsp_ndbprops *pndb_props,
+			      u32 undb_props_size, OUT u32 *pu_num_nodes)
+{
+	int status = 0;
+	struct dsp_uuid node_uuid, temp_uuid;
+	u32 temp_index = 0;
+	u32 node_index = 0;
+	struct dcd_genericobj gen_obj;
+	struct mgr_object *pmgr_obj = NULL;
+
+	DBC_REQUIRE(pndb_props != NULL);
+	DBC_REQUIRE(pu_num_nodes != NULL);
+	DBC_REQUIRE(undb_props_size >= sizeof(struct dsp_ndbprops));
+	DBC_REQUIRE(refs > 0);
+
+	*pu_num_nodes = 0;
+	/* Get The Manager Object from the Registry */
+	status = cfg_get_object((u32 *) &pmgr_obj, REG_MGR_OBJECT);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	DBC_ASSERT(pmgr_obj);
+	/* Forever loop till we hit failed or no more items in the
+	 * Enumeration. We will exit the loop other than 0; */
+	while (status == 0) {
+		status = dcd_enumerate_object(temp_index++, DSP_DCDNODETYPE,
+					      &temp_uuid);
+		if (status == 0) {
+			node_index++;
+			if (node_id == (node_index - 1))
+				node_uuid = temp_uuid;
+
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		if (node_id > (node_index - 1)) {
+			status = -EINVAL;
+		} else {
+			status = dcd_get_object_def(pmgr_obj->hdcd_mgr,
+						    (struct dsp_uuid *)
+						    &node_uuid, DSP_DCDNODETYPE,
+						    &gen_obj);
+			if (DSP_SUCCEEDED(status)) {
+				/* Get the Obj def */
+				*pndb_props =
+				    gen_obj.obj_data.node_obj.ndb_props;
+				*pu_num_nodes = node_index;
+			}
+		}
+	}
+
+func_cont:
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *pu_num_nodes > 0) ||
+		   (DSP_FAILED(status) && *pu_num_nodes == 0));
+
+	return status;
+}
+
+/*
+ *  ======== mgr_enum_processor_info ========
+ *      Enumerate and get configuration information about available
+ *      DSP processors.
+ */
+int mgr_enum_processor_info(u32 processor_id,
+				   OUT struct dsp_processorinfo *
+				   processor_info, u32 processor_info_size,
+				   OUT u8 *pu_num_procs)
+{
+	int status = 0;
+	int status1 = 0;
+	int status2 = 0;
+	struct dsp_uuid temp_uuid;
+	u32 temp_index = 0;
+	u32 proc_index = 0;
+	struct dcd_genericobj gen_obj;
+	struct mgr_object *pmgr_obj = NULL;
+	struct mgr_processorextinfo *ext_info;
+	struct dev_object *hdev_obj;
+	struct drv_object *hdrv_obj;
+	u8 dev_type;
+	struct cfg_devnode *dev_node;
+	bool proc_detect = false;
+
+	DBC_REQUIRE(processor_info != NULL);
+	DBC_REQUIRE(pu_num_procs != NULL);
+	DBC_REQUIRE(processor_info_size >= sizeof(struct dsp_processorinfo));
+	DBC_REQUIRE(refs > 0);
+
+	*pu_num_procs = 0;
+	status = cfg_get_object((u32 *) &hdrv_obj, REG_DRV_OBJECT);
+	if (DSP_SUCCEEDED(status)) {
+		status = drv_get_dev_object(processor_id, hdrv_obj, &hdev_obj);
+		if (DSP_SUCCEEDED(status)) {
+			status = dev_get_dev_type(hdev_obj, (u8 *) &dev_type);
+			status = dev_get_dev_node(hdev_obj, &dev_node);
+			if (dev_type != DSP_UNIT)
+				status = -EPERM;
+
+			if (DSP_SUCCEEDED(status))
+				processor_info->processor_type = DSPTYPE64;
+		}
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Get The Manager Object from the Registry */
+	if (DSP_FAILED(cfg_get_object((u32 *) &pmgr_obj, REG_MGR_OBJECT))) {
+		dev_dbg(bridge, "%s: Failed to get MGR Object\n", __func__);
+		goto func_end;
+	}
+	DBC_ASSERT(pmgr_obj);
+	/* Forever loop till we hit no more items in the
+	 * Enumeration. We will exit the loop other than 0; */
+	while (status1 == 0) {
+		status1 = dcd_enumerate_object(temp_index++,
+					       DSP_DCDPROCESSORTYPE,
+					       &temp_uuid);
+		if (status1 != 0)
+			break;
+
+		proc_index++;
+		/* Get the Object properties to find the Device/Processor
+		 * Type */
+		if (proc_detect != false)
+			continue;
+
+		status2 = dcd_get_object_def(pmgr_obj->hdcd_mgr,
+					     (struct dsp_uuid *)&temp_uuid,
+					     DSP_DCDPROCESSORTYPE, &gen_obj);
+		if (DSP_SUCCEEDED(status2)) {
+			/* Get the Obj def */
+			if (processor_info_size <
+			    sizeof(struct mgr_processorextinfo)) {
+				*processor_info = gen_obj.obj_data.proc_info;
+			} else {
+				/* extended info */
+				ext_info = (struct mgr_processorextinfo *)
+				    processor_info;
+				*ext_info = gen_obj.obj_data.ext_proc_obj;
+			}
+			dev_dbg(bridge, "%s: Got proctype  from DCD %x\n",
+				__func__, processor_info->processor_type);
+			/* See if we got the needed processor */
+			if (dev_type == DSP_UNIT) {
+				if (processor_info->processor_type ==
+				    DSPPROCTYPE_C64)
+					proc_detect = true;
+			} else if (dev_type == IVA_UNIT) {
+				if (processor_info->processor_type ==
+				    IVAPROCTYPE_ARM7)
+					proc_detect = true;
+			}
+			/* User applciatiuons aonly check for chip type, so
+			 * this clumsy overwrite */
+			processor_info->processor_type = DSPTYPE64;
+		} else {
+			dev_dbg(bridge, "%s: Failed to get DCD processor info "
+				"%x\n", __func__, status2);
+			status = -EPERM;
+		}
+	}
+	*pu_num_procs = proc_index;
+	if (proc_detect == false) {
+		dev_dbg(bridge, "%s: Failed to get proc info from DCD, so use "
+			"CFG registry\n", __func__);
+		processor_info->processor_type = DSPTYPE64;
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== mgr_exit ========
+ *      Decrement reference count, and free resources when reference count is
+ *      0.
+ */
+void mgr_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+	refs--;
+	if (refs == 0)
+		dcd_exit();
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== mgr_get_dcd_handle ========
+ *      Retrieves the MGR handle. Accessor Function.
+ */
+int mgr_get_dcd_handle(struct mgr_object *hMGRHandle,
+			      OUT u32 *phDCDHandle)
+{
+	int status = -EPERM;
+	struct mgr_object *pmgr_obj = (struct mgr_object *)hMGRHandle;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phDCDHandle != NULL);
+
+	*phDCDHandle = (u32) NULL;
+	if (pmgr_obj) {
+		*phDCDHandle = (u32) pmgr_obj->hdcd_mgr;
+		status = 0;
+	}
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phDCDHandle != (u32) NULL) ||
+		   (DSP_FAILED(status) && *phDCDHandle == (u32) NULL));
+
+	return status;
+}
+
+/*
+ *  ======== mgr_init ========
+ *      Initialize MGR's private state, keeping a reference count on each call.
+ */
+bool mgr_init(void)
+{
+	bool ret = true;
+	bool init_dcd = false;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (refs == 0) {
+		init_dcd = dcd_init();	/*  DCD Module */
+
+		if (!init_dcd)
+			ret = false;
+	}
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
+
+	return ret;
+}
+
+/*
+ *  ======== mgr_wait_for_bridge_events ========
+ *      Block on any Bridge event(s)
+ */
+int mgr_wait_for_bridge_events(struct dsp_notification **anotifications,
+				      u32 count, OUT u32 *pu_index,
+				      u32 utimeout)
+{
+	int status;
+	struct sync_object *sync_events[MAX_EVENTS];
+	u32 i;
+
+	DBC_REQUIRE(count < MAX_EVENTS);
+
+	for (i = 0; i < count; i++)
+		sync_events[i] = anotifications[i]->handle;
+
+	status = sync_wait_on_multiple_events(sync_events, count, utimeout,
+					      pu_index);
+
+	return status;
+
+}

drivers/staging/tidspbridge/rmgr/nldr.c

+/*
+ * nldr.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP/BIOS Bridge dynamic + overlay Node loader.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <dspbridge/host_os.h>
+
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+#include <dspbridge/dbc.h>
+
+/* Platform manager */
+#include <dspbridge/cod.h>
+#include <dspbridge/dev.h>
+
+/* Resource manager */
+#include <dspbridge/dbll.h>
+#include <dspbridge/dbdcd.h>
+#include <dspbridge/rmm.h>
+#include <dspbridge/uuidutil.h>
+
+#include <dspbridge/nldr.h>
+
+/* Name of section containing dynamic load mem */
+#define DYNMEMSECT  ".dspbridge_mem"
+
+/* Name of section containing dependent library information */
+#define DEPLIBSECT  ".dspbridge_deplibs"
+
+/* Max depth of recursion for loading node's dependent libraries */
+#define MAXDEPTH	    5
+
+/* Max number of persistent libraries kept by a node */
+#define MAXLIBS	 5
+
+/*
+ *  Defines for extracting packed dynamic load memory requirements from two
+ *  masks.
+ *  These defines must match node.cdb and dynm.cdb
+ *  Format of data/code mask is:
+ *   uuuuuuuu|fueeeeee|fudddddd|fucccccc|
+ *  where
+ *      u = unused
+ *      cccccc = prefered/required dynamic mem segid for create phase data/code
+ *      dddddd = prefered/required dynamic mem segid for delete phase data/code
+ *      eeeeee = prefered/req. dynamic mem segid for execute phase data/code
+ *      f = flag indicating if memory is preferred or required:
+ *	  f = 1 if required, f = 0 if preferred.
+ *
+ *  The 6 bits of the segid are interpreted as follows:
+ *
+ *  If the 6th bit (bit 5) is not set, then this specifies a memory segment
+ *  between 0 and 31 (a maximum of 32 dynamic loading memory segments).
+ *  If the 6th bit (bit 5) is set, segid has the following interpretation:
+ *      segid = 32 - Any internal memory segment can be used.
+ *      segid = 33 - Any external memory segment can be used.
+ *      segid = 63 - Any memory segment can be used (in this case the
+ *		   required/preferred flag is irrelevant).
+ *
+ */
+/* Maximum allowed dynamic loading memory segments */
+#define MAXMEMSEGS      32
+
+#define MAXSEGID	3	/* Largest possible (real) segid */
+#define MEMINTERNALID   32	/* Segid meaning use internal mem */
+#define MEMEXTERNALID   33	/* Segid meaning use external mem */
+#define NULLID	  63		/* Segid meaning no memory req/pref */
+#define FLAGBIT	 7		/* 7th bit is pref./req. flag */
+#define SEGMASK	 0x3f		/* Bits 0 - 5 */
+
+#define CREATEBIT	0	/* Create segid starts at bit 0 */
+#define DELETEBIT	8	/* Delete segid starts at bit 8 */
+#define EXECUTEBIT      16	/* Execute segid starts at bit 16 */
+
+/*
+ *  Masks that define memory type.  Must match defines in dynm.cdb.
+ */
+#define DYNM_CODE	0x2
+#define DYNM_DATA	0x4
+#define DYNM_CODEDATA   (DYNM_CODE | DYNM_DATA)
+#define DYNM_INTERNAL   0x8
+#define DYNM_EXTERNAL   0x10
+
+/*
+ *  Defines for packing memory requirement/preference flags for code and
+ *  data of each of the node's phases into one mask.
+ *  The bit is set if the segid is required for loading code/data of the
+ *  given phase. The bit is not set, if the segid is preferred only.
+ *
+ *  These defines are also used as indeces into a segid array for the node.
+ *  eg node's segid[CREATEDATAFLAGBIT] is the memory segment id that the
+ *  create phase data is required or preferred to be loaded into.
+ */
+#define CREATEDATAFLAGBIT   0
+#define CREATECODEFLAGBIT   1
+#define EXECUTEDATAFLAGBIT  2
+#define EXECUTECODEFLAGBIT  3
+#define DELETEDATAFLAGBIT   4
+#define DELETECODEFLAGBIT   5
+#define MAXFLAGS	    6
+
+#define IS_INTERNAL(nldr_obj, segid) (((segid) <= MAXSEGID && \
+	    nldr_obj->seg_table[(segid)] & DYNM_INTERNAL) || \
+	    (segid) == MEMINTERNALID)
+
+#define IS_EXTERNAL(nldr_obj, segid) (((segid) <= MAXSEGID && \
+	    nldr_obj->seg_table[(segid)] & DYNM_EXTERNAL) || \
+	    (segid) == MEMEXTERNALID)
+
+#define SWAPLONG(x) ((((x) << 24) & 0xFF000000) | (((x) << 8) & 0xFF0000L) | \
+	(((x) >> 8) & 0xFF00L) | (((x) >> 24) & 0xFF))
+
+#define SWAPWORD(x) ((((x) << 8) & 0xFF00) | (((x) >> 8) & 0xFF))
+
+    /*
+     *  These names may be embedded in overlay sections to identify which
+     *  node phase the section should be overlayed.
+ */
+#define PCREATE	 "create"
+#define PDELETE	 "delete"
+#define PEXECUTE	"execute"
+
+#define IS_EQUAL_UUID(uuid1, uuid2) (\
+	((uuid1).ul_data1 == (uuid2).ul_data1) && \
+	((uuid1).us_data2 == (uuid2).us_data2) && \
+	((uuid1).us_data3 == (uuid2).us_data3) && \
+	((uuid1).uc_data4 == (uuid2).uc_data4) && \
+	((uuid1).uc_data5 == (uuid2).uc_data5) && \
+	(strncmp((void *)(uuid1).uc_data6, (void *)(uuid2).uc_data6, 6)) == 0)
+
+    /*
+     *  ======== mem_seg_info ========
+     *  Format of dynamic loading memory segment info in coff file.
+     *  Must match dynm.h55.
+ */
+struct mem_seg_info {
+	u32 segid;		/* Dynamic loading memory segment number */
+	u32 base;
+	u32 len;
+	u32 type;		/* Mask of DYNM_CODE, DYNM_INTERNAL, etc. */
+};
+
+/*
+ *  ======== lib_node ========
+ *  For maintaining a tree of library dependencies.
+ */
+struct lib_node {
+	struct dbll_library_obj *lib;	/* The library */
+	u16 dep_libs;		/* Number of dependent libraries */
+	struct lib_node *dep_libs_tree;	/* Dependent libraries of lib */
+};
+
+/*
+ *  ======== ovly_sect ========
+ *  Information needed to overlay a section.
+ */
+struct ovly_sect {
+	struct ovly_sect *next_sect;
+	u32 sect_load_addr;	/* Load address of section */
+	u32 sect_run_addr;	/* Run address of section */
+	u32 size;		/* Size of section */
+	u16 page;		/* DBL_CODE, DBL_DATA */
+};
+
+/*
+ *  ======== ovly_node ========
+ *  For maintaining a list of overlay nodes, with sections that need to be
+ *  overlayed for each of the nodes phases.
+ */
+struct ovly_node {
+	struct dsp_uuid uuid;
+	char *node_name;
+	struct ovly_sect *create_sects_list;
+	struct ovly_sect *delete_sects_list;
+	struct ovly_sect *execute_sects_list;
+	struct ovly_sect *other_sects_list;
+	u16 create_sects;
+	u16 delete_sects;
+	u16 execute_sects;
+	u16 other_sects;
+	u16 create_ref;
+	u16 delete_ref;
+	u16 execute_ref;
+	u16 other_ref;
+};
+
+/*
+ *  ======== nldr_object ========
+ *  Overlay loader object.
+ */
+struct nldr_object {
+	struct dev_object *hdev_obj;	/* Device object */
+	struct dcd_manager *hdcd_mgr;	/* Proc/Node data manager */
+	struct dbll_tar_obj *dbll;	/* The DBL loader */
+	struct dbll_library_obj *base_lib;	/* Base image library */
+	struct rmm_target_obj *rmm;	/* Remote memory manager for DSP */
+	struct dbll_fxns ldr_fxns;	/* Loader function table */
+	struct dbll_attrs ldr_attrs;	/* attrs to pass to loader functions */
+	nldr_ovlyfxn ovly_fxn;	/* "write" for overlay nodes */
+	nldr_writefxn write_fxn;	/* "write" for dynamic nodes */
+	struct ovly_node *ovly_table;	/* Table of overlay nodes */
+	u16 ovly_nodes;		/* Number of overlay nodes in base */
+	u16 ovly_nid;		/* Index for tracking overlay nodes */
+	u16 dload_segs;		/* Number of dynamic load mem segs */
+	u32 *seg_table;		/* memtypes of dynamic memory segs
+				 * indexed by segid
+				 */
+	u16 us_dsp_mau_size;	/* Size of DSP MAU */
+	u16 us_dsp_word_size;	/* Size of DSP word */
+};
+
+/*
+ *  ======== nldr_nodeobject ========
+ *  Dynamic node object. This object is created when a node is allocated.
+ */
+struct nldr_nodeobject {
+	struct nldr_object *nldr_obj;	/* Dynamic loader handle */
+	void *priv_ref;		/* Handle to pass to dbl_write_fxn */
+	struct dsp_uuid uuid;	/* Node's UUID */
+	bool dynamic;		/* Dynamically loaded node? */
+	bool overlay;		/* Overlay node? */
+	bool *pf_phase_split;	/* Multiple phase libraries? */
+	struct lib_node root;	/* Library containing node phase */
+	struct lib_node create_lib;	/* Library with create phase lib */
+	struct lib_node execute_lib;	/* Library with execute phase lib */
+	struct lib_node delete_lib;	/* Library with delete phase lib */
+	/* libs remain loaded until Delete */
+	struct lib_node pers_lib_table[MAXLIBS];
+	s32 pers_libs;		/* Number of persistent libraries */
+	/* Path in lib dependency tree */
+	struct dbll_library_obj *lib_path[MAXDEPTH + 1];
+	enum nldr_phase phase;	/* Node phase currently being loaded */
+
+	/*
+	 *  Dynamic loading memory segments for data and code of each phase.
+	 */
+	u16 seg_id[MAXFLAGS];
+
+	/*
+	 *  Mask indicating whether each mem segment specified in seg_id[]
+	 *  is preferred or required.
+	 *  For example
+	 *  	if (code_data_flag_mask & (1 << EXECUTEDATAFLAGBIT)) != 0,
+	 *  then it is required to load execute phase data into the memory
+	 *  specified by seg_id[EXECUTEDATAFLAGBIT].
+	 */
+	u32 code_data_flag_mask;
+};
+
+/* Dynamic loader function table */
+static struct dbll_fxns ldr_fxns = {
+	(dbll_close_fxn) dbll_close,
+	(dbll_create_fxn) dbll_create,
+	(dbll_delete_fxn) dbll_delete,
+	(dbll_exit_fxn) dbll_exit,
+	(dbll_get_attrs_fxn) dbll_get_attrs,
+	(dbll_get_addr_fxn) dbll_get_addr,
+	(dbll_get_c_addr_fxn) dbll_get_c_addr,
+	(dbll_get_sect_fxn) dbll_get_sect,
+	(dbll_init_fxn) dbll_init,
+	(dbll_load_fxn) dbll_load,
+	(dbll_load_sect_fxn) dbll_load_sect,
+	(dbll_open_fxn) dbll_open,
+	(dbll_read_sect_fxn) dbll_read_sect,
+	(dbll_set_attrs_fxn) dbll_set_attrs,
+	(dbll_unload_fxn) dbll_unload,
+	(dbll_unload_sect_fxn) dbll_unload_sect,
+};
+
+static u32 refs;		/* module reference count */
+
+static int add_ovly_info(void *handle, struct dbll_sect_info *sect_info,
+				u32 addr, u32 bytes);
+static int add_ovly_node(struct dsp_uuid *uuid_obj,
+				enum dsp_dcdobjtype obj_type, IN void *handle);
+static int add_ovly_sect(struct nldr_object *nldr_obj,
+				struct ovly_sect **pList,
+				struct dbll_sect_info *pSectInfo,
+				bool *pExists, u32 addr, u32 bytes);
+static s32 fake_ovly_write(void *handle, u32 dspAddr, void *buf, u32 bytes,
+			   s32 mtype);
+static void free_sects(struct nldr_object *nldr_obj,
+		       struct ovly_sect *phase_sects, u16 alloc_num);
+static bool get_symbol_value(void *handle, void *parg, void *rmm_handle,
+			     char *symName, struct dbll_sym_val **sym);
+static int load_lib(struct nldr_nodeobject *nldr_node_obj,
+			   struct lib_node *root, struct dsp_uuid uuid,
+			   bool rootPersistent,
+			   struct dbll_library_obj **lib_path,
+			   enum nldr_phase phase, u16 depth);
+static int load_ovly(struct nldr_nodeobject *nldr_node_obj,
+			    enum nldr_phase phase);
+static int remote_alloc(void **pRef, u16 mem_sect_type, u32 size,
+			       u32 align, u32 *dspAddr, OPTIONAL s32 segmentId,
+			       OPTIONAL s32 req, bool reserve);
+static int remote_free(void **pRef, u16 space, u32 dspAddr, u32 size,
+			      bool reserve);
+
+static void unload_lib(struct nldr_nodeobject *nldr_node_obj,
+		       struct lib_node *root);
+static void unload_ovly(struct nldr_nodeobject *nldr_node_obj,
+			enum nldr_phase phase);
+static bool find_in_persistent_lib_array(struct nldr_nodeobject *nldr_node_obj,
+					 struct dbll_library_obj *lib);
+static u32 find_lcm(u32 a, u32 b);
+static u32 find_gcf(u32 a, u32 b);
+
+/*
+ *  ======== nldr_allocate ========
+ */
+int nldr_allocate(struct nldr_object *nldr_obj, void *priv_ref,
+			 IN CONST struct dcd_nodeprops *node_props,
+			 OUT struct nldr_nodeobject **phNldrNode,
+			 IN bool *pf_phase_split)
+{
+	struct nldr_nodeobject *nldr_node_obj = NULL;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(node_props != NULL);
+	DBC_REQUIRE(phNldrNode != NULL);
+	DBC_REQUIRE(nldr_obj);
+
+	/* Initialize handle in case of failure */
+	*phNldrNode = NULL;
+	/* Allocate node object */
+	nldr_node_obj = kzalloc(sizeof(struct nldr_nodeobject), GFP_KERNEL);
+
+	if (nldr_node_obj == NULL) {
+		status = -ENOMEM;
+	} else {
+		nldr_node_obj->pf_phase_split = pf_phase_split;
+		nldr_node_obj->pers_libs = 0;
+		nldr_node_obj->nldr_obj = nldr_obj;
+		nldr_node_obj->priv_ref = priv_ref;
+		/* Save node's UUID. */
+		nldr_node_obj->uuid = node_props->ndb_props.ui_node_id;
+		/*
+		 *  Determine if node is a dynamically loaded node from
+		 *  ndb_props.
+		 */
+		if (node_props->us_load_type == NLDR_DYNAMICLOAD) {
+			/* Dynamic node */
+			nldr_node_obj->dynamic = true;
+			/*
+			 *  Extract memory requirements from ndb_props masks
+			 */
+			/* Create phase */
+			nldr_node_obj->seg_id[CREATEDATAFLAGBIT] = (u16)
+			    (node_props->ul_data_mem_seg_mask >> CREATEBIT) &
+			    SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_data_mem_seg_mask >>
+			      (CREATEBIT + FLAGBIT)) & 1) << CREATEDATAFLAGBIT;
+			nldr_node_obj->seg_id[CREATECODEFLAGBIT] = (u16)
+			    (node_props->ul_code_mem_seg_mask >>
+			     CREATEBIT) & SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_code_mem_seg_mask >>
+			      (CREATEBIT + FLAGBIT)) & 1) << CREATECODEFLAGBIT;
+			/* Execute phase */
+			nldr_node_obj->seg_id[EXECUTEDATAFLAGBIT] = (u16)
+			    (node_props->ul_data_mem_seg_mask >>
+			     EXECUTEBIT) & SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_data_mem_seg_mask >>
+			      (EXECUTEBIT + FLAGBIT)) & 1) <<
+			    EXECUTEDATAFLAGBIT;
+			nldr_node_obj->seg_id[EXECUTECODEFLAGBIT] = (u16)
+			    (node_props->ul_code_mem_seg_mask >>
+			     EXECUTEBIT) & SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_code_mem_seg_mask >>
+			      (EXECUTEBIT + FLAGBIT)) & 1) <<
+			    EXECUTECODEFLAGBIT;
+			/* Delete phase */
+			nldr_node_obj->seg_id[DELETEDATAFLAGBIT] = (u16)
+			    (node_props->ul_data_mem_seg_mask >> DELETEBIT) &
+			    SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_data_mem_seg_mask >>
+			      (DELETEBIT + FLAGBIT)) & 1) << DELETEDATAFLAGBIT;
+			nldr_node_obj->seg_id[DELETECODEFLAGBIT] = (u16)
+			    (node_props->ul_code_mem_seg_mask >>
+			     DELETEBIT) & SEGMASK;
+			nldr_node_obj->code_data_flag_mask |=
+			    ((node_props->ul_code_mem_seg_mask >>
+			      (DELETEBIT + FLAGBIT)) & 1) << DELETECODEFLAGBIT;
+		} else {
+			/* Non-dynamically loaded nodes are part of the
+			 * base image */
+			nldr_node_obj->root.lib = nldr_obj->base_lib;
+			/* Check for overlay node */
+			if (node_props->us_load_type == NLDR_OVLYLOAD)
+				nldr_node_obj->overlay = true;
+
+		}
+		*phNldrNode = (struct nldr_nodeobject *)nldr_node_obj;
+	}
+	/* Cleanup on failure */
+	if (DSP_FAILED(status) && nldr_node_obj)
+		kfree(nldr_node_obj);
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phNldrNode)
+		   || (DSP_FAILED(status) && *phNldrNode == NULL));
+	return status;
+}
+
+/*
+ *  ======== nldr_create ========
+ */
+int nldr_create(OUT struct nldr_object **phNldr,
+		       struct dev_object *hdev_obj,
+		       IN CONST struct nldr_attrs *pattrs)
+{
+	struct cod_manager *cod_mgr;	/* COD manager */
+	char *psz_coff_buf = NULL;
+	char sz_zl_file[COD_MAXPATHLENGTH];
+	struct nldr_object *nldr_obj = NULL;
+	struct dbll_attrs save_attrs;
+	struct dbll_attrs new_attrs;
+	dbll_flags flags;
+	u32 ul_entry;
+	u16 dload_segs = 0;
+	struct mem_seg_info *mem_info_obj;
+	u32 ul_len = 0;
+	u32 ul_addr;
+	struct rmm_segment *rmm_segs = NULL;
+	u16 i;
+	int status = 0;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phNldr != NULL);
+	DBC_REQUIRE(hdev_obj != NULL);
+	DBC_REQUIRE(pattrs != NULL);
+	DBC_REQUIRE(pattrs->pfn_ovly != NULL);
+	DBC_REQUIRE(pattrs->pfn_write != NULL);
+
+	/* Allocate dynamic loader object */
+	nldr_obj = kzalloc(sizeof(struct nldr_object), GFP_KERNEL);
+	if (nldr_obj) {
+		nldr_obj->hdev_obj = hdev_obj;
+		/* warning, lazy status checking alert! */
+		dev_get_cod_mgr(hdev_obj, &cod_mgr);
+		if (cod_mgr) {
+			status = cod_get_loader(cod_mgr, &nldr_obj->dbll);
+			DBC_ASSERT(DSP_SUCCEEDED(status));
+			status = cod_get_base_lib(cod_mgr, &nldr_obj->base_lib);
+			DBC_ASSERT(DSP_SUCCEEDED(status));
+			status =
+			    cod_get_base_name(cod_mgr, sz_zl_file,
+							COD_MAXPATHLENGTH);
+			DBC_ASSERT(DSP_SUCCEEDED(status));
+		}
+		status = 0;
+		/* end lazy status checking */
+		nldr_obj->us_dsp_mau_size = pattrs->us_dsp_mau_size;
+		nldr_obj->us_dsp_word_size = pattrs->us_dsp_word_size;
+		nldr_obj->ldr_fxns = ldr_fxns;
+		if (!(nldr_obj->ldr_fxns.init_fxn()))
+			status = -ENOMEM;
+
+	} else {
+		status = -ENOMEM;
+	}
+	/* Create the DCD Manager */
+	if (DSP_SUCCEEDED(status))
+		status = dcd_create_manager(NULL, &nldr_obj->hdcd_mgr);
+
+	/* Get dynamic loading memory sections from base lib */
+	if (DSP_SUCCEEDED(status)) {
+		status =
+		    nldr_obj->ldr_fxns.get_sect_fxn(nldr_obj->base_lib,
+						    DYNMEMSECT, &ul_addr,
+						    &ul_len);
+		if (DSP_SUCCEEDED(status)) {
+			psz_coff_buf =
+				kzalloc(ul_len * nldr_obj->us_dsp_mau_size,
+								GFP_KERNEL);
+			if (!psz_coff_buf)
+				status = -ENOMEM;
+		} else {
+			/* Ok to not have dynamic loading memory */
+			status = 0;
+			ul_len = 0;
+			dev_dbg(bridge, "%s: failed - no dynamic loading mem "
+				"segments: 0x%x\n", __func__, status);
+		}
+	}
+	if (DSP_SUCCEEDED(status) && ul_len > 0) {
+		/* Read section containing dynamic load mem segments */
+		status =
+		    nldr_obj->ldr_fxns.read_sect_fxn(nldr_obj->base_lib,
+						     DYNMEMSECT, psz_coff_buf,
+						     ul_len);
+	}
+	if (DSP_SUCCEEDED(status) && ul_len > 0) {
+		/* Parse memory segment data */
+		dload_segs = (u16) (*((u32 *) psz_coff_buf));
+		if (dload_segs > MAXMEMSEGS)
+			status = -EBADF;
+	}
+	/* Parse dynamic load memory segments */
+	if (DSP_SUCCEEDED(status) && dload_segs > 0) {
+		rmm_segs = kzalloc(sizeof(struct rmm_segment) * dload_segs,
+								GFP_KERNEL);
+		nldr_obj->seg_table =
+				kzalloc(sizeof(u32) * dload_segs, GFP_KERNEL);
+		if (rmm_segs == NULL || nldr_obj->seg_table == NULL) {
+			status = -ENOMEM;
+		} else {
+			nldr_obj->dload_segs = dload_segs;
+			mem_info_obj = (struct mem_seg_info *)(psz_coff_buf +
+							       sizeof(u32));
+			for (i = 0; i < dload_segs; i++) {
+				rmm_segs[i].base = (mem_info_obj + i)->base;
+				rmm_segs[i].length = (mem_info_obj + i)->len;
+				rmm_segs[i].space = 0;
+				nldr_obj->seg_table[i] =
+				    (mem_info_obj + i)->type;
+				dev_dbg(bridge,
+					"(proc) DLL MEMSEGMENT: %d, "
+					"Base: 0x%x, Length: 0x%x\n", i,
+					rmm_segs[i].base, rmm_segs[i].length);
+			}
+		}
+	}
+	/* Create Remote memory manager */
+	if (DSP_SUCCEEDED(status))
+		status = rmm_create(&nldr_obj->rmm, rmm_segs, dload_segs);
+
+	if (DSP_SUCCEEDED(status)) {
+		/* set the alloc, free, write functions for loader */
+		nldr_obj->ldr_fxns.get_attrs_fxn(nldr_obj->dbll, &save_attrs);
+		new_attrs = save_attrs;
+		new_attrs.alloc = (dbll_alloc_fxn) remote_alloc;
+		new_attrs.free = (dbll_free_fxn) remote_free;
+		new_attrs.sym_lookup = (dbll_sym_lookup) get_symbol_value;
+		new_attrs.sym_handle = nldr_obj;
+		new_attrs.write = (dbll_write_fxn) pattrs->pfn_write;
+		nldr_obj->ovly_fxn = pattrs->pfn_ovly;
+		nldr_obj->write_fxn = pattrs->pfn_write;
+		nldr_obj->ldr_attrs = new_attrs;
+	}
+	kfree(rmm_segs);
+
+	kfree(psz_coff_buf);
+
+	/* Get overlay nodes */
+	if (DSP_SUCCEEDED(status)) {
+		status =
+		    cod_get_base_name(cod_mgr, sz_zl_file, COD_MAXPATHLENGTH);
+		/* lazy check */
+		DBC_ASSERT(DSP_SUCCEEDED(status));
+		/* First count number of overlay nodes */
+		status =
+		    dcd_get_objects(nldr_obj->hdcd_mgr, sz_zl_file,
+				    add_ovly_node, (void *)nldr_obj);
+		/* Now build table of overlay nodes */
+		if (DSP_SUCCEEDED(status) && nldr_obj->ovly_nodes > 0) {
+			/* Allocate table for overlay nodes */
+			nldr_obj->ovly_table =
+					kzalloc(sizeof(struct ovly_node) *
+					nldr_obj->ovly_nodes, GFP_KERNEL);
+			/* Put overlay nodes in the table */
+			nldr_obj->ovly_nid = 0;
+			status = dcd_get_objects(nldr_obj->hdcd_mgr, sz_zl_file,
+						 add_ovly_node,
+						 (void *)nldr_obj);
+		}
+	}
+	/* Do a fake reload of the base image to get overlay section info */
+	if (DSP_SUCCEEDED(status) && nldr_obj->ovly_nodes > 0) {
+		save_attrs.write = fake_ovly_write;
+		save_attrs.log_write = add_ovly_info;
+		save_attrs.log_write_handle = nldr_obj;
+		flags = DBLL_CODE | DBLL_DATA | DBLL_SYMB;
+		status = nldr_obj->ldr_fxns.load_fxn(nldr_obj->base_lib, flags,
+						     &save_attrs, &ul_entry);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		*phNldr = (struct nldr_object *)nldr_obj;
+	} else {
+		if (nldr_obj)
+			nldr_delete((struct nldr_object *)nldr_obj);
+
+		*phNldr = NULL;
+	}
+	/* FIXME:Temp. Fix. Must be removed */
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phNldr)
+		   || (DSP_FAILED(status) && (*phNldr == NULL)));
+	return status;
+}
+
+/*
+ *  ======== nldr_delete ========
+ */
+void nldr_delete(struct nldr_object *nldr_obj)
+{
+	struct ovly_sect *ovly_section;
+	struct ovly_sect *next;
+	u16 i;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(nldr_obj);
+
+	nldr_obj->ldr_fxns.exit_fxn();
+	if (nldr_obj->rmm)
+		rmm_delete(nldr_obj->rmm);
+
+	kfree(nldr_obj->seg_table);
+
+	if (nldr_obj->hdcd_mgr)
+		dcd_destroy_manager(nldr_obj->hdcd_mgr);
+
+	/* Free overlay node information */
+	if (nldr_obj->ovly_table) {
+		for (i = 0; i < nldr_obj->ovly_nodes; i++) {
+			ovly_section =
+			    nldr_obj->ovly_table[i].create_sects_list;
+			while (ovly_section) {
+				next = ovly_section->next_sect;
+				kfree(ovly_section);
+				ovly_section = next;
+			}
+			ovly_section =
+			    nldr_obj->ovly_table[i].delete_sects_list;
+			while (ovly_section) {
+				next = ovly_section->next_sect;
+				kfree(ovly_section);
+				ovly_section = next;
+			}
+			ovly_section =
+			    nldr_obj->ovly_table[i].execute_sects_list;
+			while (ovly_section) {
+				next = ovly_section->next_sect;
+				kfree(ovly_section);
+				ovly_section = next;
+			}
+			ovly_section = nldr_obj->ovly_table[i].other_sects_list;
+			while (ovly_section) {
+				next = ovly_section->next_sect;
+				kfree(ovly_section);
+				ovly_section = next;
+			}
+		}
+		kfree(nldr_obj->ovly_table);
+	}
+	kfree(nldr_obj);
+}
+
+/*
+ *  ======== nldr_exit ========
+ *  Discontinue usage of NLDR module.
+ */
+void nldr_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	if (refs == 0)
+		rmm_exit();
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== nldr_get_fxn_addr ========
+ */
+int nldr_get_fxn_addr(struct nldr_nodeobject *nldr_node_obj,
+			     char *pstrFxn, u32 * pulAddr)
+{
+	struct dbll_sym_val *dbll_sym;
+	struct nldr_object *nldr_obj;
+	int status = 0;
+	bool status1 = false;
+	s32 i = 0;
+	struct lib_node root = { NULL, 0, NULL };
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(nldr_node_obj);
+	DBC_REQUIRE(pulAddr != NULL);
+	DBC_REQUIRE(pstrFxn != NULL);
+
+	nldr_obj = nldr_node_obj->nldr_obj;
+	/* Called from node_create(), node_delete(), or node_run(). */
+	if (nldr_node_obj->dynamic && *nldr_node_obj->pf_phase_split) {
+		switch (nldr_node_obj->phase) {
+		case NLDR_CREATE:
+			root = nldr_node_obj->create_lib;
+			break;
+		case NLDR_EXECUTE:
+			root = nldr_node_obj->execute_lib;
+			break;
+		case NLDR_DELETE:
+			root = nldr_node_obj->delete_lib;
+			break;
+		default:
+			DBC_ASSERT(false);
+			break;
+		}
+	} else {
+		/* for Overlay nodes or non-split Dynamic nodes */
+		root = nldr_node_obj->root;
+	}
+	status1 =
+	    nldr_obj->ldr_fxns.get_c_addr_fxn(root.lib, pstrFxn, &dbll_sym);
+	if (!status1)
+		status1 =
+		    nldr_obj->ldr_fxns.get_addr_fxn(root.lib, pstrFxn,
+						    &dbll_sym);
+
+	/* If symbol not found, check dependent libraries */
+	if (!status1) {
+		for (i = 0; i < root.dep_libs; i++) {
+			status1 =
+			    nldr_obj->ldr_fxns.get_addr_fxn(root.dep_libs_tree
+							    [i].lib, pstrFxn,
+							    &dbll_sym);
+			if (!status1) {
+				status1 =
+				    nldr_obj->ldr_fxns.
+				    get_c_addr_fxn(root.dep_libs_tree[i].lib,
+						   pstrFxn, &dbll_sym);
+			}
+			if (status1) {
+				/* Symbol found */
+				break;
+			}
+		}
+	}
+	/* Check persistent libraries */
+	if (!status1) {
+		for (i = 0; i < nldr_node_obj->pers_libs; i++) {
+			status1 =
+			    nldr_obj->ldr_fxns.
+			    get_addr_fxn(nldr_node_obj->pers_lib_table[i].lib,
+					 pstrFxn, &dbll_sym);
+			if (!status1) {
+				status1 =
+				    nldr_obj->ldr_fxns.
+				    get_c_addr_fxn(nldr_node_obj->pers_lib_table
+						   [i].lib, pstrFxn, &dbll_sym);
+			}
+			if (status1) {
+				/* Symbol found */
+				break;
+			}
+		}
+	}
+
+	if (status1)
+		*pulAddr = dbll_sym->value;
+	else
+		status = -ESPIPE;
+
+	return status;
+}
+
+/*
+ *  ======== nldr_get_rmm_manager ========
+ *  Given a NLDR object, retrieve RMM Manager Handle
+ */
+int nldr_get_rmm_manager(struct nldr_object *hNldrObject,
+				OUT struct rmm_target_obj **phRmmMgr)
+{
+	int status = 0;
+	struct nldr_object *nldr_obj = hNldrObject;
+	DBC_REQUIRE(phRmmMgr != NULL);
+
+	if (hNldrObject) {
+		*phRmmMgr = nldr_obj->rmm;
+	} else {
+		*phRmmMgr = NULL;
+		status = -EFAULT;
+	}
+
+	DBC_ENSURE(DSP_SUCCEEDED(status) || ((phRmmMgr != NULL) &&
+					     (*phRmmMgr == NULL)));
+
+	return status;
+}
+
+/*
+ *  ======== nldr_init ========
+ *  Initialize the NLDR module.
+ */
+bool nldr_init(void)
+{
+	DBC_REQUIRE(refs >= 0);
+
+	if (refs == 0)
+		rmm_init();
+
+	refs++;
+
+	DBC_ENSURE(refs > 0);
+	return true;
+}
+
+/*
+ *  ======== nldr_load ========
+ */
+int nldr_load(struct nldr_nodeobject *nldr_node_obj,
+		     enum nldr_phase phase)
+{
+	struct nldr_object *nldr_obj;
+	struct dsp_uuid lib_uuid;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(nldr_node_obj);
+
+	nldr_obj = nldr_node_obj->nldr_obj;
+
+	if (nldr_node_obj->dynamic) {
+		nldr_node_obj->phase = phase;
+
+		lib_uuid = nldr_node_obj->uuid;
+
+		/* At this point, we may not know if node is split into
+		 * different libraries. So we'll go ahead and load the
+		 * library, and then save the pointer to the appropriate
+		 * location after we know. */
+
+		status =
+		    load_lib(nldr_node_obj, &nldr_node_obj->root, lib_uuid,
+			     false, nldr_node_obj->lib_path, phase, 0);
+
+		if (DSP_SUCCEEDED(status)) {
+			if (*nldr_node_obj->pf_phase_split) {
+				switch (phase) {
+				case NLDR_CREATE:
+					nldr_node_obj->create_lib =
+					    nldr_node_obj->root;
+					break;
+
+				case NLDR_EXECUTE:
+					nldr_node_obj->execute_lib =
+					    nldr_node_obj->root;
+					break;
+
+				case NLDR_DELETE:
+					nldr_node_obj->delete_lib =
+					    nldr_node_obj->root;
+					break;
+
+				default:
+					DBC_ASSERT(false);
+					break;
+				}
+			}
+		}
+	} else {
+		if (nldr_node_obj->overlay)
+			status = load_ovly(nldr_node_obj, phase);
+
+	}
+
+	return status;
+}
+
+/*
+ *  ======== nldr_unload ========
+ */
+int nldr_unload(struct nldr_nodeobject *nldr_node_obj,
+		       enum nldr_phase phase)
+{
+	int status = 0;
+	struct lib_node *root_lib = NULL;
+	s32 i = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(nldr_node_obj);
+
+	if (nldr_node_obj != NULL) {
+		if (nldr_node_obj->dynamic) {
+			if (*nldr_node_obj->pf_phase_split) {
+				switch (phase) {
+				case NLDR_CREATE:
+					root_lib = &nldr_node_obj->create_lib;
+					break;
+				case NLDR_EXECUTE:
+					root_lib = &nldr_node_obj->execute_lib;
+					break;
+				case NLDR_DELETE:
+					root_lib = &nldr_node_obj->delete_lib;
+					/* Unload persistent libraries */
+					for (i = 0;
+					     i < nldr_node_obj->pers_libs;
+					     i++) {
+						unload_lib(nldr_node_obj,
+							   &nldr_node_obj->
+							   pers_lib_table[i]);
+					}
+					nldr_node_obj->pers_libs = 0;
+					break;
+				default:
+					DBC_ASSERT(false);
+					break;
+				}
+			} else {
+				/* Unload main library */
+				root_lib = &nldr_node_obj->root;
+			}
+			if (root_lib)
+				unload_lib(nldr_node_obj, root_lib);
+		} else {
+			if (nldr_node_obj->overlay)
+				unload_ovly(nldr_node_obj, phase);
+
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== add_ovly_info ========
+ */
+static int add_ovly_info(void *handle, struct dbll_sect_info *sect_info,
+				u32 addr, u32 bytes)
+{
+	char *node_name;
+	char *sect_name = (char *)sect_info->name;
+	bool sect_exists = false;
+	char seps = ':';
+	char *pch;
+	u16 i;
+	struct nldr_object *nldr_obj = (struct nldr_object *)handle;
+	int status = 0;
+
+	/* Is this an overlay section (load address != run address)? */
+	if (sect_info->sect_load_addr == sect_info->sect_run_addr)
+		goto func_end;
+
+	/* Find the node it belongs to */
+	for (i = 0; i < nldr_obj->ovly_nodes; i++) {
+		node_name = nldr_obj->ovly_table[i].node_name;
+		DBC_REQUIRE(node_name);
+		if (strncmp(node_name, sect_name + 1, strlen(node_name)) == 0) {
+			/* Found the node */
+			break;
+		}
+	}
+	if (!(i < nldr_obj->ovly_nodes))
+		goto func_end;
+
+	/* Determine which phase this section belongs to */
+	for (pch = sect_name + 1; *pch && *pch != seps; pch++)
+		;;
+
+	if (*pch) {
+		pch++;		/* Skip over the ':' */
+		if (strncmp(pch, PCREATE, strlen(PCREATE)) == 0) {
+			status =
+			    add_ovly_sect(nldr_obj,
+					  &nldr_obj->
+					  ovly_table[i].create_sects_list,
+					  sect_info, &sect_exists, addr, bytes);
+			if (DSP_SUCCEEDED(status) && !sect_exists)
+				nldr_obj->ovly_table[i].create_sects++;
+
+		} else if (strncmp(pch, PDELETE, strlen(PDELETE)) == 0) {
+			status =
+			    add_ovly_sect(nldr_obj,
+					  &nldr_obj->
+					  ovly_table[i].delete_sects_list,
+					  sect_info, &sect_exists, addr, bytes);
+			if (DSP_SUCCEEDED(status) && !sect_exists)
+				nldr_obj->ovly_table[i].delete_sects++;
+
+		} else if (strncmp(pch, PEXECUTE, strlen(PEXECUTE)) == 0) {
+			status =
+			    add_ovly_sect(nldr_obj,
+					  &nldr_obj->
+					  ovly_table[i].execute_sects_list,
+					  sect_info, &sect_exists, addr, bytes);
+			if (DSP_SUCCEEDED(status) && !sect_exists)
+				nldr_obj->ovly_table[i].execute_sects++;
+
+		} else {
+			/* Put in "other" sectins */
+			status =
+			    add_ovly_sect(nldr_obj,
+					  &nldr_obj->
+					  ovly_table[i].other_sects_list,
+					  sect_info, &sect_exists, addr, bytes);
+			if (DSP_SUCCEEDED(status) && !sect_exists)
+				nldr_obj->ovly_table[i].other_sects++;
+
+		}
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== add_ovly_node =========
+ *  Callback function passed to dcd_get_objects.
+ */
+static int add_ovly_node(struct dsp_uuid *uuid_obj,
+				enum dsp_dcdobjtype obj_type, IN void *handle)
+{
+	struct nldr_object *nldr_obj = (struct nldr_object *)handle;
+	char *node_name = NULL;
+	char *pbuf = NULL;
+	u32 len;
+	struct dcd_genericobj obj_def;
+	int status = 0;
+
+	if (obj_type != DSP_DCDNODETYPE)
+		goto func_end;
+
+	status =
+	    dcd_get_object_def(nldr_obj->hdcd_mgr, uuid_obj, obj_type,
+			       &obj_def);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* If overlay node, add to the list */
+	if (obj_def.obj_data.node_obj.us_load_type == NLDR_OVLYLOAD) {
+		if (nldr_obj->ovly_table == NULL) {
+			nldr_obj->ovly_nodes++;
+		} else {
+			/* Add node to table */
+			nldr_obj->ovly_table[nldr_obj->ovly_nid].uuid =
+			    *uuid_obj;
+			DBC_REQUIRE(obj_def.obj_data.node_obj.ndb_props.
+				    ac_name);
+			len =
+			    strlen(obj_def.obj_data.node_obj.ndb_props.ac_name);
+			node_name = obj_def.obj_data.node_obj.ndb_props.ac_name;
+			pbuf = kzalloc(len + 1, GFP_KERNEL);
+			if (pbuf == NULL) {
+				status = -ENOMEM;
+			} else {
+				strncpy(pbuf, node_name, len);
+				nldr_obj->ovly_table[nldr_obj->ovly_nid].
+				    node_name = pbuf;
+				nldr_obj->ovly_nid++;
+			}
+		}
+	}
+	/* These were allocated in dcd_get_object_def */
+	kfree(obj_def.obj_data.node_obj.pstr_create_phase_fxn);
+
+	kfree(obj_def.obj_data.node_obj.pstr_execute_phase_fxn);
+
+	kfree(obj_def.obj_data.node_obj.pstr_delete_phase_fxn);
+
+	kfree(obj_def.obj_data.node_obj.pstr_i_alg_name);
+
+func_end:
+	return status;
+}
+
+/*
+ *  ======== add_ovly_sect ========
+ */
+static int add_ovly_sect(struct nldr_object *nldr_obj,
+				struct ovly_sect **pList,
+				struct dbll_sect_info *pSectInfo,
+				bool *pExists, u32 addr, u32 bytes)
+{
+	struct ovly_sect *new_sect = NULL;
+	struct ovly_sect *last_sect;
+	struct ovly_sect *ovly_section;
+	int status = 0;
+
+	ovly_section = last_sect = *pList;
+	*pExists = false;
+	while (ovly_section) {
+		/*
+		 *  Make sure section has not already been added. Multiple
+		 *  'write' calls may be made to load the section.
+		 */
+		if (ovly_section->sect_load_addr == addr) {
+			/* Already added */
+			*pExists = true;
+			break;
+		}
+		last_sect = ovly_section;
+		ovly_section = ovly_section->next_sect;
+	}
+
+	if (!ovly_section) {
+		/* New section */
+		new_sect = kzalloc(sizeof(struct ovly_sect), GFP_KERNEL);
+		if (new_sect == NULL) {
+			status = -ENOMEM;
+		} else {
+			new_sect->sect_load_addr = addr;
+			new_sect->sect_run_addr = pSectInfo->sect_run_addr +
+			    (addr - pSectInfo->sect_load_addr);
+			new_sect->size = bytes;
+			new_sect->page = pSectInfo->type;
+		}
+
+		/* Add to the list */
+		if (DSP_SUCCEEDED(status)) {
+			if (*pList == NULL) {
+				/* First in the list */
+				*pList = new_sect;
+			} else {
+				last_sect->next_sect = new_sect;
+			}
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== fake_ovly_write ========
+ */
+static s32 fake_ovly_write(void *handle, u32 dspAddr, void *buf, u32 bytes,
+			   s32 mtype)
+{
+	return (s32) bytes;
+}
+
+/*
+ *  ======== free_sects ========
+ */
+static void free_sects(struct nldr_object *nldr_obj,
+		       struct ovly_sect *phase_sects, u16 alloc_num)
+{
+	struct ovly_sect *ovly_section = phase_sects;
+	u16 i = 0;
+	bool ret;
+
+	while (ovly_section && i < alloc_num) {
+		/* 'Deallocate' */
+		/* segid - page not supported yet */
+		/* Reserved memory */
+		ret =
+		    rmm_free(nldr_obj->rmm, 0, ovly_section->sect_run_addr,
+			     ovly_section->size, true);
+		DBC_ASSERT(ret);
+		ovly_section = ovly_section->next_sect;
+		i++;
+	}
+}
+
+/*
+ *  ======== get_symbol_value ========
+ *  Find symbol in library's base image.  If not there, check dependent
+ *  libraries.
+ */
+static bool get_symbol_value(void *handle, void *parg, void *rmm_handle,
+			     char *name, struct dbll_sym_val **sym)
+{
+	struct nldr_object *nldr_obj = (struct nldr_object *)handle;
+	struct nldr_nodeobject *nldr_node_obj =
+	    (struct nldr_nodeobject *)rmm_handle;
+	struct lib_node *root = (struct lib_node *)parg;
+	u16 i;
+	bool status = false;
+
+	/* check the base image */
+	status = nldr_obj->ldr_fxns.get_addr_fxn(nldr_obj->base_lib, name, sym);
+	if (!status)
+		status =
+		    nldr_obj->ldr_fxns.get_c_addr_fxn(nldr_obj->base_lib, name,
+						      sym);
+
+	/*
+	 *  Check in root lib itself. If the library consists of
+	 *  multiple object files linked together, some symbols in the
+	 *  library may need to be resolved.
+	 */
+	if (!status) {
+		status = nldr_obj->ldr_fxns.get_addr_fxn(root->lib, name, sym);
+		if (!status) {
+			status =
+			    nldr_obj->ldr_fxns.get_c_addr_fxn(root->lib, name,
+							      sym);
+		}
+	}
+
+	/*
+	 *  Check in root lib's dependent libraries, but not dependent
+	 *  libraries' dependents.
+	 */
+	if (!status) {
+		for (i = 0; i < root->dep_libs; i++) {
+			status =
+			    nldr_obj->ldr_fxns.get_addr_fxn(root->dep_libs_tree
+							    [i].lib, name, sym);
+			if (!status) {
+				status =
+				    nldr_obj->ldr_fxns.
+				    get_c_addr_fxn(root->dep_libs_tree[i].lib,
+						   name, sym);
+			}
+			if (status) {
+				/* Symbol found */
+				break;
+			}
+		}
+	}
+	/*
+	 * Check in persistent libraries
+	 */
+	if (!status) {
+		for (i = 0; i < nldr_node_obj->pers_libs; i++) {
+			status =
+			    nldr_obj->ldr_fxns.
+			    get_addr_fxn(nldr_node_obj->pers_lib_table[i].lib,
+					 name, sym);
+			if (!status) {
+				status = nldr_obj->ldr_fxns.get_c_addr_fxn
+				    (nldr_node_obj->pers_lib_table[i].lib, name,
+				     sym);
+			}
+			if (status) {
+				/* Symbol found */
+				break;
+			}
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== load_lib ========
+ *  Recursively load library and all its dependent libraries. The library
+ *  we're loading is specified by a uuid.
+ */
+static int load_lib(struct nldr_nodeobject *nldr_node_obj,
+			   struct lib_node *root, struct dsp_uuid uuid,
+			   bool rootPersistent,
+			   struct dbll_library_obj **lib_path,
+			   enum nldr_phase phase, u16 depth)
+{
+	struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
+	u16 nd_libs = 0;	/* Number of dependent libraries */
+	u16 np_libs = 0;	/* Number of persistent libraries */
+	u16 nd_libs_loaded = 0;	/* Number of dep. libraries loaded */
+	u16 i;
+	u32 entry;
+	u32 dw_buf_size = NLDR_MAXPATHLENGTH;
+	dbll_flags flags = DBLL_SYMB | DBLL_CODE | DBLL_DATA | DBLL_DYNAMIC;
+	struct dbll_attrs new_attrs;
+	char *psz_file_name = NULL;
+	struct dsp_uuid *dep_lib_uui_ds = NULL;
+	bool *persistent_dep_libs = NULL;
+	int status = 0;
+	bool lib_status = false;
+	struct lib_node *dep_lib;
+
+	if (depth > MAXDEPTH) {
+		/* Error */
+		DBC_ASSERT(false);
+	}
+	root->lib = NULL;
+	/* Allocate a buffer for library file name of size DBL_MAXPATHLENGTH */
+	psz_file_name = kzalloc(DBLL_MAXPATHLENGTH, GFP_KERNEL);
+	if (psz_file_name == NULL)
+		status = -ENOMEM;
+
+	if (DSP_SUCCEEDED(status)) {
+		/* Get the name of the library */
+		if (depth == 0) {
+			status =
+			    dcd_get_library_name(nldr_node_obj->nldr_obj->
+						 hdcd_mgr, &uuid, psz_file_name,
+						 &dw_buf_size, phase,
+						 nldr_node_obj->pf_phase_split);
+		} else {
+			/* Dependent libraries are registered with a phase */
+			status =
+			    dcd_get_library_name(nldr_node_obj->nldr_obj->
+						 hdcd_mgr, &uuid, psz_file_name,
+						 &dw_buf_size, NLDR_NOPHASE,
+						 NULL);
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Open the library, don't load symbols */
+		status =
+		    nldr_obj->ldr_fxns.open_fxn(nldr_obj->dbll, psz_file_name,
+						DBLL_NOLOAD, &root->lib);
+	}
+	/* Done with file name */
+	kfree(psz_file_name);
+
+	/* Check to see if library not already loaded */
+	if (DSP_SUCCEEDED(status) && rootPersistent) {
+		lib_status =
+		    find_in_persistent_lib_array(nldr_node_obj, root->lib);
+		/* Close library */
+		if (lib_status) {
+			nldr_obj->ldr_fxns.close_fxn(root->lib);
+			return 0;
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Check for circular dependencies. */
+		for (i = 0; i < depth; i++) {
+			if (root->lib == lib_path[i]) {
+				/* This condition could be checked by a
+				 * tool at build time. */
+				status = -EILSEQ;
+			}
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Add library to current path in dependency tree */
+		lib_path[depth] = root->lib;
+		depth++;
+		/* Get number of dependent libraries */
+		status =
+		    dcd_get_num_dep_libs(nldr_node_obj->nldr_obj->hdcd_mgr,
+					 &uuid, &nd_libs, &np_libs, phase);
+	}
+	DBC_ASSERT(nd_libs >= np_libs);
+	if (DSP_SUCCEEDED(status)) {
+		if (!(*nldr_node_obj->pf_phase_split))
+			np_libs = 0;
+
+		/* nd_libs = #of dependent libraries */
+		root->dep_libs = nd_libs - np_libs;
+		if (nd_libs > 0) {
+			dep_lib_uui_ds = kzalloc(sizeof(struct dsp_uuid) *
+							nd_libs, GFP_KERNEL);
+			persistent_dep_libs =
+				kzalloc(sizeof(bool) * nd_libs, GFP_KERNEL);
+			if (!dep_lib_uui_ds || !persistent_dep_libs)
+				status = -ENOMEM;
+
+			if (root->dep_libs > 0) {
+				/* Allocate arrays for dependent lib UUIDs,
+				 * lib nodes */
+				root->dep_libs_tree = kzalloc
+						(sizeof(struct lib_node) *
+						(root->dep_libs), GFP_KERNEL);
+				if (!(root->dep_libs_tree))
+					status = -ENOMEM;
+
+			}
+
+			if (DSP_SUCCEEDED(status)) {
+				/* Get the dependent library UUIDs */
+				status =
+				    dcd_get_dep_libs(nldr_node_obj->
+						     nldr_obj->hdcd_mgr, &uuid,
+						     nd_libs, dep_lib_uui_ds,
+						     persistent_dep_libs,
+						     phase);
+			}
+		}
+	}
+
+	/*
+	 *  Recursively load dependent libraries.
+	 */
+	if (DSP_SUCCEEDED(status)) {
+		for (i = 0; i < nd_libs; i++) {
+			/* If root library is NOT persistent, and dep library
+			 * is, then record it.  If root library IS persistent,
+			 * the deplib is already included */
+			if (!rootPersistent && persistent_dep_libs[i] &&
+			    *nldr_node_obj->pf_phase_split) {
+				if ((nldr_node_obj->pers_libs) >= MAXLIBS) {
+					status = -EILSEQ;
+					break;
+				}
+
+				/* Allocate library outside of phase */
+				dep_lib =
+				    &nldr_node_obj->pers_lib_table
+				    [nldr_node_obj->pers_libs];
+			} else {
+				if (rootPersistent)
+					persistent_dep_libs[i] = true;
+
+				/* Allocate library within phase */
+				dep_lib = &root->dep_libs_tree[nd_libs_loaded];
+			}
+
+			status = load_lib(nldr_node_obj, dep_lib,
+					  dep_lib_uui_ds[i],
+					  persistent_dep_libs[i], lib_path,
+					  phase, depth);
+
+			if (DSP_SUCCEEDED(status)) {
+				if ((status != 0) &&
+				    !rootPersistent && persistent_dep_libs[i] &&
+				    *nldr_node_obj->pf_phase_split) {
+					(nldr_node_obj->pers_libs)++;
+				} else {
+					if (!persistent_dep_libs[i] ||
+					    !(*nldr_node_obj->pf_phase_split)) {
+						nd_libs_loaded++;
+					}
+				}
+			} else {
+				break;
+			}
+		}
+	}
+
+	/* Now we can load the root library */
+	if (DSP_SUCCEEDED(status)) {
+		new_attrs = nldr_obj->ldr_attrs;
+		new_attrs.sym_arg = root;
+		new_attrs.rmm_handle = nldr_node_obj;
+		new_attrs.input_params = nldr_node_obj->priv_ref;
+		new_attrs.base_image = false;
+
+		status =
+		    nldr_obj->ldr_fxns.load_fxn(root->lib, flags, &new_attrs,
+						&entry);
+	}
+
+	/*
+	 *  In case of failure, unload any dependent libraries that
+	 *  were loaded, and close the root library.
+	 *  (Persistent libraries are unloaded from the very top)
+	 */
+	if (DSP_FAILED(status)) {
+		if (phase != NLDR_EXECUTE) {
+			for (i = 0; i < nldr_node_obj->pers_libs; i++)
+				unload_lib(nldr_node_obj,
+					   &nldr_node_obj->pers_lib_table[i]);
+
+			nldr_node_obj->pers_libs = 0;
+		}
+		for (i = 0; i < nd_libs_loaded; i++)
+			unload_lib(nldr_node_obj, &root->dep_libs_tree[i]);
+
+		if (root->lib)
+			nldr_obj->ldr_fxns.close_fxn(root->lib);
+
+	}
+
+	/* Going up one node in the dependency tree */
+	depth--;
+
+	kfree(dep_lib_uui_ds);
+	dep_lib_uui_ds = NULL;
+
+	kfree(persistent_dep_libs);
+	persistent_dep_libs = NULL;
+
+	return status;
+}
+
+/*
+ *  ======== load_ovly ========
+ */
+static int load_ovly(struct nldr_nodeobject *nldr_node_obj,
+			    enum nldr_phase phase)
+{
+	struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
+	struct ovly_node *po_node = NULL;
+	struct ovly_sect *phase_sects = NULL;
+	struct ovly_sect *other_sects_list = NULL;
+	u16 i;
+	u16 alloc_num = 0;
+	u16 other_alloc = 0;
+	u16 *ref_count = NULL;
+	u16 *other_ref = NULL;
+	u32 bytes;
+	struct ovly_sect *ovly_section;
+	int status = 0;
+
+	/* Find the node in the table */
+	for (i = 0; i < nldr_obj->ovly_nodes; i++) {
+		if (IS_EQUAL_UUID
+		    (nldr_node_obj->uuid, nldr_obj->ovly_table[i].uuid)) {
+			/* Found it */
+			po_node = &(nldr_obj->ovly_table[i]);
+			break;
+		}
+	}
+
+	DBC_ASSERT(i < nldr_obj->ovly_nodes);
+
+	if (!po_node) {
+		status = -ENOENT;
+		goto func_end;
+	}
+
+	switch (phase) {
+	case NLDR_CREATE:
+		ref_count = &(po_node->create_ref);
+		other_ref = &(po_node->other_ref);
+		phase_sects = po_node->create_sects_list;
+		other_sects_list = po_node->other_sects_list;
+		break;
+
+	case NLDR_EXECUTE:
+		ref_count = &(po_node->execute_ref);
+		phase_sects = po_node->execute_sects_list;
+		break;
+
+	case NLDR_DELETE:
+		ref_count = &(po_node->delete_ref);
+		phase_sects = po_node->delete_sects_list;
+		break;
+
+	default:
+		DBC_ASSERT(false);
+		break;
+	}
+
+	if (ref_count == NULL)
+		goto func_end;
+
+	if (*ref_count != 0)
+		goto func_end;
+
+	/* 'Allocate' memory for overlay sections of this phase */
+	ovly_section = phase_sects;
+	while (ovly_section) {
+		/* allocate *//* page not supported yet */
+		/* reserve *//* align */
+		status = rmm_alloc(nldr_obj->rmm, 0, ovly_section->size, 0,
+				   &(ovly_section->sect_run_addr), true);
+		if (DSP_SUCCEEDED(status)) {
+			ovly_section = ovly_section->next_sect;
+			alloc_num++;
+		} else {
+			break;
+		}
+	}
+	if (other_ref && *other_ref == 0) {
+		/* 'Allocate' memory for other overlay sections
+		 * (create phase) */
+		if (DSP_SUCCEEDED(status)) {
+			ovly_section = other_sects_list;
+			while (ovly_section) {
+				/* page not supported *//* align */
+				/* reserve */
+				status =
+				    rmm_alloc(nldr_obj->rmm, 0,
+					      ovly_section->size, 0,
+					      &(ovly_section->sect_run_addr),
+					      true);
+				if (DSP_SUCCEEDED(status)) {
+					ovly_section = ovly_section->next_sect;
+					other_alloc++;
+				} else {
+					break;
+				}
+			}
+		}
+	}
+	if (*ref_count == 0) {
+		if (DSP_SUCCEEDED(status)) {
+			/* Load sections for this phase */
+			ovly_section = phase_sects;
+			while (ovly_section && DSP_SUCCEEDED(status)) {
+				bytes =
+				    (*nldr_obj->ovly_fxn) (nldr_node_obj->
+							   priv_ref,
+							   ovly_section->
+							   sect_run_addr,
+							   ovly_section->
+							   sect_load_addr,
+							   ovly_section->size,
+							   ovly_section->page);
+				if (bytes != ovly_section->size)
+					status = -EPERM;
+
+				ovly_section = ovly_section->next_sect;
+			}
+		}
+	}
+	if (other_ref && *other_ref == 0) {
+		if (DSP_SUCCEEDED(status)) {
+			/* Load other sections (create phase) */
+			ovly_section = other_sects_list;
+			while (ovly_section && DSP_SUCCEEDED(status)) {
+				bytes =
+				    (*nldr_obj->ovly_fxn) (nldr_node_obj->
+							   priv_ref,
+							   ovly_section->
+							   sect_run_addr,
+							   ovly_section->
+							   sect_load_addr,
+							   ovly_section->size,
+							   ovly_section->page);
+				if (bytes != ovly_section->size)
+					status = -EPERM;
+
+				ovly_section = ovly_section->next_sect;
+			}
+		}
+	}
+	if (DSP_FAILED(status)) {
+		/* 'Deallocate' memory */
+		free_sects(nldr_obj, phase_sects, alloc_num);
+		free_sects(nldr_obj, other_sects_list, other_alloc);
+	}
+func_end:
+	if (DSP_SUCCEEDED(status) && (ref_count != NULL)) {
+		*ref_count += 1;
+		if (other_ref)
+			*other_ref += 1;
+
+	}
+
+	return status;
+}
+
+/*
+ *  ======== remote_alloc ========
+ */
+static int remote_alloc(void **pRef, u16 space, u32 size,
+			       u32 align, u32 *dspAddr,
+			       OPTIONAL s32 segmentId, OPTIONAL s32 req,
+			       bool reserve)
+{
+	struct nldr_nodeobject *hnode = (struct nldr_nodeobject *)pRef;
+	struct nldr_object *nldr_obj;
+	struct rmm_target_obj *rmm;
+	u16 mem_phase_bit = MAXFLAGS;
+	u16 segid = 0;
+	u16 i;
+	u16 mem_sect_type;
+	u32 word_size;
+	struct rmm_addr *rmm_addr_obj = (struct rmm_addr *)dspAddr;
+	bool mem_load_req = false;
+	int status = -ENOMEM;	/* Set to fail */
+	DBC_REQUIRE(hnode);
+	DBC_REQUIRE(space == DBLL_CODE || space == DBLL_DATA ||
+		    space == DBLL_BSS);
+	nldr_obj = hnode->nldr_obj;
+	rmm = nldr_obj->rmm;
+	/* Convert size to DSP words */
+	word_size =
+	    (size + nldr_obj->us_dsp_word_size -
+	     1) / nldr_obj->us_dsp_word_size;
+	/* Modify memory 'align' to account for DSP cache line size */
+	align = find_lcm(GEM_CACHE_LINE_SIZE, align);
+	dev_dbg(bridge, "%s: memory align to 0x%x\n", __func__, align);
+	if (segmentId != -1) {
+		rmm_addr_obj->segid = segmentId;
+		segid = segmentId;
+		mem_load_req = req;
+	} else {
+		switch (hnode->phase) {
+		case NLDR_CREATE:
+			mem_phase_bit = CREATEDATAFLAGBIT;
+			break;
+		case NLDR_DELETE:
+			mem_phase_bit = DELETEDATAFLAGBIT;
+			break;
+		case NLDR_EXECUTE:
+			mem_phase_bit = EXECUTEDATAFLAGBIT;
+			break;
+		default:
+			DBC_ASSERT(false);
+			break;
+		}
+		if (space == DBLL_CODE)
+			mem_phase_bit++;
+
+		if (mem_phase_bit < MAXFLAGS)
+			segid = hnode->seg_id[mem_phase_bit];
+
+		/* Determine if there is a memory loading requirement */
+		if ((hnode->code_data_flag_mask >> mem_phase_bit) & 0x1)
+			mem_load_req = true;
+
+	}
+	mem_sect_type = (space == DBLL_CODE) ? DYNM_CODE : DYNM_DATA;
+
+	/* Find an appropriate segment based on space */
+	if (segid == NULLID) {
+		/* No memory requirements of preferences */
+		DBC_ASSERT(!mem_load_req);
+		goto func_cont;
+	}
+	if (segid <= MAXSEGID) {
+		DBC_ASSERT(segid < nldr_obj->dload_segs);
+		/* Attempt to allocate from segid first. */
+		rmm_addr_obj->segid = segid;
+		status =
+		    rmm_alloc(rmm, segid, word_size, align, dspAddr, false);
+		if (DSP_FAILED(status)) {
+			dev_dbg(bridge, "%s: Unable allocate from segment %d\n",
+				__func__, segid);
+		}
+	} else {
+		/* segid > MAXSEGID ==> Internal or external memory */
+		DBC_ASSERT(segid == MEMINTERNALID || segid == MEMEXTERNALID);
+		/*  Check for any internal or external memory segment,
+		 *  depending on segid. */
+		mem_sect_type |= segid == MEMINTERNALID ?
+		    DYNM_INTERNAL : DYNM_EXTERNAL;
+		for (i = 0; i < nldr_obj->dload_segs; i++) {
+			if ((nldr_obj->seg_table[i] & mem_sect_type) !=
+			    mem_sect_type)
+				continue;
+
+			status = rmm_alloc(rmm, i, word_size, align, dspAddr,
+					   false);
+			if (DSP_SUCCEEDED(status)) {
+				/* Save segid for freeing later */
+				rmm_addr_obj->segid = i;
+				break;
+			}
+		}
+	}
+func_cont:
+	/* Haven't found memory yet, attempt to find any segment that works */
+	if (status == -ENOMEM && !mem_load_req) {
+		dev_dbg(bridge, "%s: Preferred segment unavailable, trying "
+			"another\n", __func__);
+		for (i = 0; i < nldr_obj->dload_segs; i++) {
+			/* All bits of mem_sect_type must be set */
+			if ((nldr_obj->seg_table[i] & mem_sect_type) !=
+			    mem_sect_type)
+				continue;
+
+			status = rmm_alloc(rmm, i, word_size, align, dspAddr,
+					   false);
+			if (DSP_SUCCEEDED(status)) {
+				/* Save segid */
+				rmm_addr_obj->segid = i;
+				break;
+			}
+		}
+	}
+
+	return status;
+}
+
+static int remote_free(void **pRef, u16 space, u32 dspAddr,
+			      u32 size, bool reserve)
+{
+	struct nldr_object *nldr_obj = (struct nldr_object *)pRef;
+	struct rmm_target_obj *rmm;
+	u32 word_size;
+	int status = -ENOMEM;	/* Set to fail */
+
+	DBC_REQUIRE(nldr_obj);
+
+	rmm = nldr_obj->rmm;
+
+	/* Convert size to DSP words */
+	word_size =
+	    (size + nldr_obj->us_dsp_word_size -
+	     1) / nldr_obj->us_dsp_word_size;
+
+	if (rmm_free(rmm, space, dspAddr, word_size, reserve))
+		status = 0;
+
+	return status;
+}
+
+/*
+ *  ======== unload_lib ========
+ */
+static void unload_lib(struct nldr_nodeobject *nldr_node_obj,
+		       struct lib_node *root)
+{
+	struct dbll_attrs new_attrs;
+	struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
+	u16 i;
+
+	DBC_ASSERT(root != NULL);
+
+	/* Unload dependent libraries */
+	for (i = 0; i < root->dep_libs; i++)
+		unload_lib(nldr_node_obj, &root->dep_libs_tree[i]);
+
+	root->dep_libs = 0;
+
+	new_attrs = nldr_obj->ldr_attrs;
+	new_attrs.rmm_handle = nldr_obj->rmm;
+	new_attrs.input_params = nldr_node_obj->priv_ref;
+	new_attrs.base_image = false;
+	new_attrs.sym_arg = root;
+
+	if (root->lib) {
+		/* Unload the root library */
+		nldr_obj->ldr_fxns.unload_fxn(root->lib, &new_attrs);
+		nldr_obj->ldr_fxns.close_fxn(root->lib);
+	}
+
+	/* Free dependent library list */
+	kfree(root->dep_libs_tree);
+	root->dep_libs_tree = NULL;
+}
+
+/*
+ *  ======== unload_ovly ========
+ */
+static void unload_ovly(struct nldr_nodeobject *nldr_node_obj,
+			enum nldr_phase phase)
+{
+	struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
+	struct ovly_node *po_node = NULL;
+	struct ovly_sect *phase_sects = NULL;
+	struct ovly_sect *other_sects_list = NULL;
+	u16 i;
+	u16 alloc_num = 0;
+	u16 other_alloc = 0;
+	u16 *ref_count = NULL;
+	u16 *other_ref = NULL;
+
+	/* Find the node in the table */
+	for (i = 0; i < nldr_obj->ovly_nodes; i++) {
+		if (IS_EQUAL_UUID
+		    (nldr_node_obj->uuid, nldr_obj->ovly_table[i].uuid)) {
+			/* Found it */
+			po_node = &(nldr_obj->ovly_table[i]);
+			break;
+		}
+	}
+
+	DBC_ASSERT(i < nldr_obj->ovly_nodes);
+
+	if (!po_node)
+		/* TODO: Should we print warning here? */
+		return;
+
+	switch (phase) {
+	case NLDR_CREATE:
+		ref_count = &(po_node->create_ref);
+		phase_sects = po_node->create_sects_list;
+		alloc_num = po_node->create_sects;
+		break;
+	case NLDR_EXECUTE:
+		ref_count = &(po_node->execute_ref);
+		phase_sects = po_node->execute_sects_list;
+		alloc_num = po_node->execute_sects;
+		break;
+	case NLDR_DELETE:
+		ref_count = &(po_node->delete_ref);
+		other_ref = &(po_node->other_ref);
+		phase_sects = po_node->delete_sects_list;
+		/* 'Other' overlay sections are unloaded in the delete phase */
+		other_sects_list = po_node->other_sects_list;
+		alloc_num = po_node->delete_sects;
+		other_alloc = po_node->other_sects;
+		break;
+	default:
+		DBC_ASSERT(false);
+		break;
+	}
+	DBC_ASSERT(ref_count && (*ref_count > 0));
+	if (ref_count && (*ref_count > 0)) {
+		*ref_count -= 1;
+		if (other_ref) {
+			DBC_ASSERT(*other_ref > 0);
+			*other_ref -= 1;
+		}
+	}
+
+	if (ref_count && *ref_count == 0) {
+		/* 'Deallocate' memory */
+		free_sects(nldr_obj, phase_sects, alloc_num);
+	}
+	if (other_ref && *other_ref == 0)
+		free_sects(nldr_obj, other_sects_list, other_alloc);
+}
+
+/*
+ *  ======== find_in_persistent_lib_array ========
+ */
+static bool find_in_persistent_lib_array(struct nldr_nodeobject *nldr_node_obj,
+					 struct dbll_library_obj *lib)
+{
+	s32 i = 0;
+
+	for (i = 0; i < nldr_node_obj->pers_libs; i++) {
+		if (lib == nldr_node_obj->pers_lib_table[i].lib)
+			return true;
+
+	}
+
+	return false;
+}
+
+/*
+ * ================ Find LCM (Least Common Multiplier ===
+ */
+static u32 find_lcm(u32 a, u32 b)
+{
+	u32 ret;
+
+	ret = a * b / find_gcf(a, b);
+
+	return ret;
+}
+
+/*
+ * ================ Find GCF (Greatest Common Factor ) ===
+ */
+static u32 find_gcf(u32 a, u32 b)
+{
+	u32 c;
+
+	/* Get the GCF (Greatest common factor between the numbers,
+	 * using Euclidian Algo */
+	while ((c = (a % b))) {
+		a = b;
+		b = c;
+	}
+	return b;
+}
+
+/**
+ * nldr_find_addr() - Find the closest symbol to the given address based on
+ *		dynamic node object.
+ *
+ * @nldr_node:		Dynamic node object
+ * @sym_addr:		Given address to find the dsp symbol
+ * @offset_range:		offset range to look for dsp symbol
+ * @offset_output:		Symbol Output address
+ * @sym_name:		String with the dsp symbol
+ *
+ * 	This function finds the node library for a given address and
+ *	retrieves the dsp symbol by calling dbll_find_dsp_symbol.
+ */
+int nldr_find_addr(struct nldr_nodeobject *nldr_node, u32 sym_addr,
+			u32 offset_range, void *offset_output, char *sym_name)
+{
+	int status = 0;
+	bool status1 = false;
+	s32 i = 0;
+	struct lib_node root = { NULL, 0, NULL };
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(offset_output != NULL);
+	DBC_REQUIRE(sym_name != NULL);
+	pr_debug("%s(0x%x, 0x%x, 0x%x, 0x%x,  %s)\n", __func__, (u32) nldr_node,
+			sym_addr, offset_range, (u32) offset_output, sym_name);
+
+	if (nldr_node->dynamic && *nldr_node->pf_phase_split) {
+		switch (nldr_node->phase) {
+		case NLDR_CREATE:
+			root = nldr_node->create_lib;
+			break;
+		case NLDR_EXECUTE:
+			root = nldr_node->execute_lib;
+			break;
+		case NLDR_DELETE:
+			root = nldr_node->delete_lib;
+			break;
+		default:
+			DBC_ASSERT(false);
+			break;
+		}
+	} else {
+		/* for Overlay nodes or non-split Dynamic nodes */
+		root = nldr_node->root;
+	}
+
+	status1 = dbll_find_dsp_symbol(root.lib, sym_addr,
+			offset_range, offset_output, sym_name);
+
+	/* If symbol not found, check dependent libraries */
+	if (!status1)
+		for (i = 0; i < root.dep_libs; i++) {
+			status1 = dbll_find_dsp_symbol(
+				root.dep_libs_tree[i].lib, sym_addr,
+				offset_range, offset_output, sym_name);
+			if (status1)
+				/* Symbol found */
+				break;
+		}
+	/* Check persistent libraries */
+	if (!status1)
+		for (i = 0; i < nldr_node->pers_libs; i++) {
+			status1 = dbll_find_dsp_symbol(
+				nldr_node->pers_lib_table[i].lib, sym_addr,
+				offset_range, offset_output, sym_name);
+			if (status1)
+				/* Symbol found */
+				break;
+		}
+
+	if (!status1) {
+		pr_debug("%s: Address 0x%x not found in range %d.\n",
+					__func__, sym_addr, offset_range);
+		status = -ESPIPE;
+	}
+
+	return status;
+}

drivers/staging/tidspbridge/rmgr/node.c

+/*
+ * node.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP/BIOS Bridge Node Manager.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+#include <dspbridge/list.h>
+#include <dspbridge/memdefs.h>
+#include <dspbridge/proc.h>
+#include <dspbridge/strm.h>
+#include <dspbridge/sync.h>
+#include <dspbridge/ntfy.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/cmm.h>
+#include <dspbridge/cod.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/msg.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/dbdcd.h>
+#include <dspbridge/disp.h>
+#include <dspbridge/rms_sh.h>
+
+/*  ----------------------------------- Link Driver */
+#include <dspbridge/dspdefs.h>
+#include <dspbridge/dspioctl.h>
+
+/*  ----------------------------------- Others */
+#include <dspbridge/gb.h>
+#include <dspbridge/uuidutil.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/nodepriv.h>
+#include <dspbridge/node.h>
+#include <dspbridge/dmm.h>
+
+/* Static/Dynamic Loader includes */
+#include <dspbridge/dbll.h>
+#include <dspbridge/nldr.h>
+
+#include <dspbridge/drv.h>
+#include <dspbridge/drvdefs.h>
+#include <dspbridge/resourcecleanup.h>
+#include <_tiomap.h>
+
+#define HOSTPREFIX	  "/host"
+#define PIPEPREFIX	  "/dbpipe"
+
+#define MAX_INPUTS(h)  \
+		((h)->dcd_props.obj_data.node_obj.ndb_props.num_input_streams)
+#define MAX_OUTPUTS(h) \
+		((h)->dcd_props.obj_data.node_obj.ndb_props.num_output_streams)
+
+#define NODE_GET_PRIORITY(h) ((h)->prio)
+#define NODE_SET_PRIORITY(hnode, prio) ((hnode)->prio = prio)
+#define NODE_SET_STATE(hnode, state) ((hnode)->node_state = state)
+
+#define MAXPIPES	100	/* Max # of /pipe connections (CSL limit) */
+#define MAXDEVSUFFIXLEN 2	/* Max(Log base 10 of MAXPIPES, MAXSTREAMS) */
+
+#define PIPENAMELEN     (sizeof(PIPEPREFIX) + MAXDEVSUFFIXLEN)
+#define HOSTNAMELEN     (sizeof(HOSTPREFIX) + MAXDEVSUFFIXLEN)
+
+#define MAXDEVNAMELEN	32	/* dsp_ndbprops.ac_name size */
+#define CREATEPHASE	1
+#define EXECUTEPHASE	2
+#define DELETEPHASE	3
+
+/* Define default STRM parameters */
+/*
+ *  TBD: Put in header file, make global DSP_STRMATTRS with defaults,
+ *  or make defaults configurable.
+ */
+#define DEFAULTBUFSIZE		32
+#define DEFAULTNBUFS		2
+#define DEFAULTSEGID		0
+#define DEFAULTALIGNMENT	0
+#define DEFAULTTIMEOUT		10000
+
+#define RMSQUERYSERVER		0
+#define RMSCONFIGURESERVER	1
+#define RMSCREATENODE		2
+#define RMSEXECUTENODE		3
+#define RMSDELETENODE		4
+#define RMSCHANGENODEPRIORITY	5
+#define RMSREADMEMORY		6
+#define RMSWRITEMEMORY		7
+#define RMSCOPY			8
+#define MAXTIMEOUT		2000
+
+#define NUMRMSFXNS		9
+
+#define PWR_TIMEOUT		500	/* default PWR timeout in msec */
+
+#define STACKSEGLABEL "L1DSRAM_HEAP"	/* Label for DSP Stack Segment Addr */
+
+/*
+ *  ======== node_mgr ========
+ */
+struct node_mgr {
+	struct dev_object *hdev_obj;	/* Device object */
+	/* Function interface to Bridge driver */
+	struct bridge_drv_interface *intf_fxns;
+	struct dcd_manager *hdcd_mgr;	/* Proc/Node data manager */
+	struct disp_object *disp_obj;	/* Node dispatcher */
+	struct lst_list *node_list;	/* List of all allocated nodes */
+	u32 num_nodes;		/* Number of nodes in node_list */
+	u32 num_created;	/* Number of nodes *created* on DSP */
+	struct gb_t_map *pipe_map;	/* Pipe connection bit map */
+	struct gb_t_map *pipe_done_map;	/* Pipes that are half free */
+	struct gb_t_map *chnl_map;	/* Channel allocation bit map */
+	struct gb_t_map *dma_chnl_map;	/* DMA Channel allocation bit map */
+	struct gb_t_map *zc_chnl_map;	/* Zero-Copy Channel alloc bit map */
+	struct ntfy_object *ntfy_obj;	/* Manages registered notifications */
+	struct mutex node_mgr_lock;	/* For critical sections */
+	u32 ul_fxn_addrs[NUMRMSFXNS];	/* RMS function addresses */
+	struct msg_mgr *msg_mgr_obj;
+
+	/* Processor properties needed by Node Dispatcher */
+	u32 ul_num_chnls;	/* Total number of channels */
+	u32 ul_chnl_offset;	/* Offset of chnl ids rsvd for RMS */
+	u32 ul_chnl_buf_size;	/* Buffer size for data to RMS */
+	int proc_family;	/* eg, 5000 */
+	int proc_type;		/* eg, 5510 */
+	u32 udsp_word_size;	/* Size of DSP word on host bytes */
+	u32 udsp_data_mau_size;	/* Size of DSP data MAU */
+	u32 udsp_mau_size;	/* Size of MAU */
+	s32 min_pri;		/* Minimum runtime priority for node */
+	s32 max_pri;		/* Maximum runtime priority for node */
+
+	struct strm_mgr *strm_mgr_obj;	/* STRM manager */
+
+	/* Loader properties */
+	struct nldr_object *nldr_obj;	/* Handle to loader */
+	struct node_ldr_fxns nldr_fxns;	/* Handle to loader functions */
+	bool loader_init;	/* Loader Init function succeeded? */
+};
+
+/*
+ *  ======== connecttype ========
+ */
+enum connecttype {
+	NOTCONNECTED = 0,
+	NODECONNECT,
+	HOSTCONNECT,
+	DEVICECONNECT,
+};
+
+/*
+ *  ======== stream_chnl ========
+ */
+struct stream_chnl {
+	enum connecttype type;	/* Type of stream connection */
+	u32 dev_id;		/* pipe or channel id */
+};
+
+/*
+ *  ======== node_object ========
+ */
+struct node_object {
+	struct list_head list_elem;
+	struct node_mgr *hnode_mgr;	/* The manager of this node */
+	struct proc_object *hprocessor;	/* Back pointer to processor */
+	struct dsp_uuid node_uuid;	/* Node's ID */
+	s32 prio;		/* Node's current priority */
+	u32 utimeout;		/* Timeout for blocking NODE calls */
+	u32 heap_size;		/* Heap Size */
+	u32 udsp_heap_virt_addr;	/* Heap Size */
+	u32 ugpp_heap_virt_addr;	/* Heap Size */
+	enum node_type ntype;	/* Type of node: message, task, etc */
+	enum node_state node_state;	/* NODE_ALLOCATED, NODE_CREATED, ... */
+	u32 num_inputs;		/* Current number of inputs */
+	u32 num_outputs;	/* Current number of outputs */
+	u32 max_input_index;	/* Current max input stream index */
+	u32 max_output_index;	/* Current max output stream index */
+	struct stream_chnl *inputs;	/* Node's input streams */
+	struct stream_chnl *outputs;	/* Node's output streams */
+	struct node_createargs create_args;	/* Args for node create func */
+	nodeenv node_env;	/* Environment returned by RMS */
+	struct dcd_genericobj dcd_props;	/* Node properties from DCD */
+	struct dsp_cbdata *pargs;	/* Optional args to pass to node */
+	struct ntfy_object *ntfy_obj;	/* Manages registered notifications */
+	char *pstr_dev_name;	/* device name, if device node */
+	struct sync_object *sync_done;	/* Synchronize node_terminate */
+	s32 exit_status;	/* execute function return status */
+
+	/* Information needed for node_get_attr() */
+	void *device_owner;	/* If dev node, task that owns it */
+	u32 num_gpp_inputs;	/* Current # of from GPP streams */
+	u32 num_gpp_outputs;	/* Current # of to GPP streams */
+	/* Current stream connections */
+	struct dsp_streamconnect *stream_connect;
+
+	/* Message queue */
+	struct msg_queue *msg_queue_obj;
+
+	/* These fields used for SM messaging */
+	struct cmm_xlatorobject *xlator;	/* Node's SM addr translator */
+
+	/* Handle to pass to dynamic loader */
+	struct nldr_nodeobject *nldr_node_obj;
+	bool loaded;		/* Code is (dynamically) loaded */
+	bool phase_split;	/* Phases split in many libs or ovly */
+
+};
+
+/* Default buffer attributes */
+static struct dsp_bufferattr node_dfltbufattrs = {
+	0,			/* cb_struct */
+	1,			/* segment_id */
+	0,			/* buf_alignment */
+};
+
+static void delete_node(struct node_object *hnode,
+			struct process_context *pr_ctxt);
+static void delete_node_mgr(struct node_mgr *hnode_mgr);
+static void fill_stream_connect(struct node_object *hNode1,
+				struct node_object *hNode2, u32 uStream1,
+				u32 uStream2);
+static void fill_stream_def(struct node_object *hnode,
+			    struct node_strmdef *pstrm_def,
+			    struct dsp_strmattr *pattrs);
+static void free_stream(struct node_mgr *hnode_mgr, struct stream_chnl stream);
+static int get_fxn_address(struct node_object *hnode, u32 * pulFxnAddr,
+				  u32 uPhase);
+static int get_node_props(struct dcd_manager *hdcd_mgr,
+				 struct node_object *hnode,
+				 CONST struct dsp_uuid *pNodeId,
+				 struct dcd_genericobj *pdcdProps);
+static int get_proc_props(struct node_mgr *hnode_mgr,
+				 struct dev_object *hdev_obj);
+static int get_rms_fxns(struct node_mgr *hnode_mgr);
+static u32 ovly(void *priv_ref, u32 ulDspRunAddr, u32 ulDspLoadAddr,
+		u32 ul_num_bytes, u32 nMemSpace);
+static u32 mem_write(void *priv_ref, u32 ulDspAddr, void *pbuf,
+		     u32 ul_num_bytes, u32 nMemSpace);
+
+static u32 refs;		/* module reference count */
+
+/* Dynamic loader functions. */
+static struct node_ldr_fxns nldr_fxns = {
+	nldr_allocate,
+	nldr_create,
+	nldr_delete,
+	nldr_exit,
+	nldr_get_fxn_addr,
+	nldr_init,
+	nldr_load,
+	nldr_unload,
+};
+
+enum node_state node_get_state(void *hnode)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	if (!pnode)
+		return -1;
+	else
+		return pnode->node_state;
+}
+
+/*
+ *  ======== node_allocate ========
+ *  Purpose:
+ *      Allocate GPP resources to manage a node on the DSP.
+ */
+int node_allocate(struct proc_object *hprocessor,
+			 IN CONST struct dsp_uuid *pNodeId,
+			 OPTIONAL IN CONST struct dsp_cbdata *pargs,
+			 OPTIONAL IN CONST struct dsp_nodeattrin *attr_in,
+			 OUT struct node_object **ph_node,
+			 struct process_context *pr_ctxt)
+{
+	struct node_mgr *hnode_mgr;
+	struct dev_object *hdev_obj;
+	struct node_object *pnode = NULL;
+	enum node_type node_type = NODE_TASK;
+	struct node_msgargs *pmsg_args;
+	struct node_taskargs *ptask_args;
+	u32 num_streams;
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+	struct cmm_object *hcmm_mgr = NULL;	/* Shared memory manager hndl */
+	u32 proc_id;
+	u32 pul_value;
+	u32 dynext_base;
+	u32 off_set = 0;
+	u32 ul_stack_seg_addr, ul_stack_seg_val;
+	u32 ul_gpp_mem_base;
+	struct cfg_hostres *host_res;
+	struct bridge_dev_context *pbridge_context;
+	u32 mapped_addr = 0;
+	u32 map_attrs = 0x0;
+	struct dsp_processorstate proc_state;
+#ifdef DSP_DMM_DEBUG
+	struct dmm_object *dmm_mgr;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+#endif
+
+	void *node_res;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hprocessor != NULL);
+	DBC_REQUIRE(ph_node != NULL);
+	DBC_REQUIRE(pNodeId != NULL);
+
+	*ph_node = NULL;
+
+	status = proc_get_processor_id(hprocessor, &proc_id);
+
+	if (proc_id != DSP_UNIT)
+		goto func_end;
+
+	status = proc_get_dev_object(hprocessor, &hdev_obj);
+	if (DSP_SUCCEEDED(status)) {
+		status = dev_get_node_manager(hdev_obj, &hnode_mgr);
+		if (hnode_mgr == NULL)
+			status = -EPERM;
+
+	}
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	status = dev_get_bridge_context(hdev_obj, &pbridge_context);
+	if (!pbridge_context) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in error state then don't attempt
+	   to send the message */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+
+	/* Assuming that 0 is not a valid function address */
+	if (hnode_mgr->ul_fxn_addrs[0] == 0) {
+		/* No RMS on target - we currently can't handle this */
+		pr_err("%s: Failed, no RMS in base image\n", __func__);
+		status = -EPERM;
+	} else {
+		/* Validate attr_in fields, if non-NULL */
+		if (attr_in) {
+			/* Check if attr_in->prio is within range */
+			if (attr_in->prio < hnode_mgr->min_pri ||
+			    attr_in->prio > hnode_mgr->max_pri)
+				status = -EDOM;
+		}
+	}
+	/* Allocate node object and fill in */
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	pnode = kzalloc(sizeof(struct node_object), GFP_KERNEL);
+	if (pnode == NULL) {
+		status = -ENOMEM;
+		goto func_end;
+	}
+	pnode->hnode_mgr = hnode_mgr;
+	/* This critical section protects get_node_props */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	/* Get dsp_ndbprops from node database */
+	status = get_node_props(hnode_mgr->hdcd_mgr, pnode, pNodeId,
+				&(pnode->dcd_props));
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	pnode->node_uuid = *pNodeId;
+	pnode->hprocessor = hprocessor;
+	pnode->ntype = pnode->dcd_props.obj_data.node_obj.ndb_props.ntype;
+	pnode->utimeout = pnode->dcd_props.obj_data.node_obj.ndb_props.utimeout;
+	pnode->prio = pnode->dcd_props.obj_data.node_obj.ndb_props.prio;
+
+	/* Currently only C64 DSP builds support Node Dynamic * heaps */
+	/* Allocate memory for node heap */
+	pnode->create_args.asa.task_arg_obj.heap_size = 0;
+	pnode->create_args.asa.task_arg_obj.udsp_heap_addr = 0;
+	pnode->create_args.asa.task_arg_obj.udsp_heap_res_addr = 0;
+	pnode->create_args.asa.task_arg_obj.ugpp_heap_addr = 0;
+	if (!attr_in)
+		goto func_cont;
+
+	/* Check if we have a user allocated node heap */
+	if (!(attr_in->pgpp_virt_addr))
+		goto func_cont;
+
+	/* check for page aligned Heap size */
+	if (((attr_in->heap_size) & (PG_SIZE4K - 1))) {
+		pr_err("%s: node heap size not aligned to 4K, size = 0x%x \n",
+		       __func__, attr_in->heap_size);
+		status = -EINVAL;
+	} else {
+		pnode->create_args.asa.task_arg_obj.heap_size =
+		    attr_in->heap_size;
+		pnode->create_args.asa.task_arg_obj.ugpp_heap_addr =
+		    (u32) attr_in->pgpp_virt_addr;
+	}
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	status = proc_reserve_memory(hprocessor,
+				     pnode->create_args.asa.task_arg_obj.
+				     heap_size + PAGE_SIZE,
+				     (void **)&(pnode->create_args.asa.
+					task_arg_obj.udsp_heap_res_addr),
+				     pr_ctxt);
+	if (DSP_FAILED(status)) {
+		pr_err("%s: Failed to reserve memory for heap: 0x%x\n",
+		       __func__, status);
+		goto func_cont;
+	}
+#ifdef DSP_DMM_DEBUG
+	status = dmm_get_handle(p_proc_object, &dmm_mgr);
+	if (!dmm_mgr) {
+		status = DSP_EHANDLE;
+		goto func_cont;
+	}
+
+	dmm_mem_map_dump(dmm_mgr);
+#endif
+
+	map_attrs |= DSP_MAPLITTLEENDIAN;
+	map_attrs |= DSP_MAPELEMSIZE32;
+	map_attrs |= DSP_MAPVIRTUALADDR;
+	status = proc_map(hprocessor, (void *)attr_in->pgpp_virt_addr,
+			  pnode->create_args.asa.task_arg_obj.heap_size,
+			  (void *)pnode->create_args.asa.task_arg_obj.
+			  udsp_heap_res_addr, (void **)&mapped_addr, map_attrs,
+			  pr_ctxt);
+	if (DSP_FAILED(status))
+		pr_err("%s: Failed to map memory for Heap: 0x%x\n",
+		       __func__, status);
+	else
+		pnode->create_args.asa.task_arg_obj.udsp_heap_addr =
+		    (u32) mapped_addr;
+
+func_cont:
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+	if (attr_in != NULL) {
+		/* Overrides of NBD properties */
+		pnode->utimeout = attr_in->utimeout;
+		pnode->prio = attr_in->prio;
+	}
+	/* Create object to manage notifications */
+	if (DSP_SUCCEEDED(status)) {
+		pnode->ntfy_obj = kmalloc(sizeof(struct ntfy_object),
+							GFP_KERNEL);
+		if (pnode->ntfy_obj)
+			ntfy_init(pnode->ntfy_obj);
+		else
+			status = -ENOMEM;
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		node_type = node_get_type(pnode);
+		/*  Allocate dsp_streamconnect array for device, task, and
+		 *  dais socket nodes. */
+		if (node_type != NODE_MESSAGE) {
+			num_streams = MAX_INPUTS(pnode) + MAX_OUTPUTS(pnode);
+			pnode->stream_connect = kzalloc(num_streams *
+					sizeof(struct dsp_streamconnect),
+					GFP_KERNEL);
+			if (num_streams > 0 && pnode->stream_connect == NULL)
+				status = -ENOMEM;
+
+		}
+		if (DSP_SUCCEEDED(status) && (node_type == NODE_TASK ||
+					      node_type == NODE_DAISSOCKET)) {
+			/* Allocate arrays for maintainig stream connections */
+			pnode->inputs = kzalloc(MAX_INPUTS(pnode) *
+					sizeof(struct stream_chnl), GFP_KERNEL);
+			pnode->outputs = kzalloc(MAX_OUTPUTS(pnode) *
+					sizeof(struct stream_chnl), GFP_KERNEL);
+			ptask_args = &(pnode->create_args.asa.task_arg_obj);
+			ptask_args->strm_in_def = kzalloc(MAX_INPUTS(pnode) *
+						sizeof(struct node_strmdef),
+						GFP_KERNEL);
+			ptask_args->strm_out_def = kzalloc(MAX_OUTPUTS(pnode) *
+						sizeof(struct node_strmdef),
+						GFP_KERNEL);
+			if ((MAX_INPUTS(pnode) > 0 && (pnode->inputs == NULL ||
+						       ptask_args->strm_in_def
+						       == NULL))
+			    || (MAX_OUTPUTS(pnode) > 0
+				&& (pnode->outputs == NULL
+				    || ptask_args->strm_out_def == NULL)))
+				status = -ENOMEM;
+		}
+	}
+	if (DSP_SUCCEEDED(status) && (node_type != NODE_DEVICE)) {
+		/* Create an event that will be posted when RMS_EXIT is
+		 * received. */
+		pnode->sync_done = kzalloc(sizeof(struct sync_object),
+								GFP_KERNEL);
+		if (pnode->sync_done)
+			sync_init_event(pnode->sync_done);
+		else
+			status = -ENOMEM;
+
+		if (DSP_SUCCEEDED(status)) {
+			/*Get the shared mem mgr for this nodes dev object */
+			status = cmm_get_handle(hprocessor, &hcmm_mgr);
+			if (DSP_SUCCEEDED(status)) {
+				/* Allocate a SM addr translator for this node
+				 * w/ deflt attr */
+				status = cmm_xlator_create(&pnode->xlator,
+							   hcmm_mgr, NULL);
+			}
+		}
+		if (DSP_SUCCEEDED(status)) {
+			/* Fill in message args */
+			if ((pargs != NULL) && (pargs->cb_data > 0)) {
+				pmsg_args =
+				    &(pnode->create_args.asa.node_msg_args);
+				pmsg_args->pdata = kzalloc(pargs->cb_data,
+								GFP_KERNEL);
+				if (pmsg_args->pdata == NULL) {
+					status = -ENOMEM;
+				} else {
+					pmsg_args->arg_length = pargs->cb_data;
+					memcpy(pmsg_args->pdata,
+					       pargs->node_data,
+					       pargs->cb_data);
+				}
+			}
+		}
+	}
+
+	if (DSP_SUCCEEDED(status) && node_type != NODE_DEVICE) {
+		/* Create a message queue for this node */
+		intf_fxns = hnode_mgr->intf_fxns;
+		status =
+		    (*intf_fxns->pfn_msg_create_queue) (hnode_mgr->msg_mgr_obj,
+							&pnode->msg_queue_obj,
+							0,
+							pnode->create_args.asa.
+							node_msg_args.max_msgs,
+							pnode);
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		/* Create object for dynamic loading */
+
+		status = hnode_mgr->nldr_fxns.pfn_allocate(hnode_mgr->nldr_obj,
+							   (void *)pnode,
+							   &pnode->dcd_props.
+							   obj_data.node_obj,
+							   &pnode->
+							   nldr_node_obj,
+							   &pnode->phase_split);
+	}
+
+	/* Compare value read from Node Properties and check if it is same as
+	 * STACKSEGLABEL, if yes read the Address of STACKSEGLABEL, calculate
+	 * GPP Address, Read the value in that address and override the
+	 * stack_seg value in task args */
+	if (DSP_SUCCEEDED(status) &&
+	    (char *)pnode->dcd_props.obj_data.node_obj.ndb_props.
+	    stack_seg_name != NULL) {
+		if (strcmp((char *)
+			   pnode->dcd_props.obj_data.node_obj.ndb_props.
+			   stack_seg_name, STACKSEGLABEL) == 0) {
+			status =
+			    hnode_mgr->nldr_fxns.
+			    pfn_get_fxn_addr(pnode->nldr_node_obj, "DYNEXT_BEG",
+					     &dynext_base);
+			if (DSP_FAILED(status))
+				pr_err("%s: Failed to get addr for DYNEXT_BEG"
+				       " status = 0x%x\n", __func__, status);
+
+			status =
+			    hnode_mgr->nldr_fxns.
+			    pfn_get_fxn_addr(pnode->nldr_node_obj,
+					     "L1DSRAM_HEAP", &pul_value);
+
+			if (DSP_FAILED(status))
+				pr_err("%s: Failed to get addr for L1DSRAM_HEAP"
+				       " status = 0x%x\n", __func__, status);
+
+			host_res = pbridge_context->resources;
+			if (!host_res)
+				status = -EPERM;
+
+			if (DSP_FAILED(status)) {
+				pr_err("%s: Failed to get host resource, status"
+				       " = 0x%x\n", __func__, status);
+				goto func_end;
+			}
+
+			ul_gpp_mem_base = (u32) host_res->dw_mem_base[1];
+			off_set = pul_value - dynext_base;
+			ul_stack_seg_addr = ul_gpp_mem_base + off_set;
+			ul_stack_seg_val = (u32) *((reg_uword32 *)
+						    ((u32)
+						     (ul_stack_seg_addr)));
+
+			dev_dbg(bridge, "%s: StackSegVal = 0x%x, StackSegAddr ="
+				" 0x%x\n", __func__, ul_stack_seg_val,
+				ul_stack_seg_addr);
+
+			pnode->create_args.asa.task_arg_obj.stack_seg =
+			    ul_stack_seg_val;
+
+		}
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		/* Add the node to the node manager's list of allocated
+		 * nodes. */
+		lst_init_elem((struct list_head *)pnode);
+		NODE_SET_STATE(pnode, NODE_ALLOCATED);
+
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+
+		lst_put_tail(hnode_mgr->node_list, (struct list_head *) pnode);
+			++(hnode_mgr->num_nodes);
+
+		/* Exit critical section */
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+
+		/* Preset this to assume phases are split
+		 * (for overlay and dll) */
+		pnode->phase_split = true;
+
+		if (DSP_SUCCEEDED(status))
+			*ph_node = pnode;
+
+		/* Notify all clients registered for DSP_NODESTATECHANGE. */
+		proc_notify_all_clients(hprocessor, DSP_NODESTATECHANGE);
+	} else {
+		/* Cleanup */
+		if (pnode)
+			delete_node(pnode, pr_ctxt);
+
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		drv_insert_node_res_element(*ph_node, &node_res, pr_ctxt);
+		drv_proc_node_update_heap_status(node_res, true);
+		drv_proc_node_update_status(node_res, true);
+	}
+	DBC_ENSURE((DSP_FAILED(status) && (*ph_node == NULL)) ||
+			(DSP_SUCCEEDED(status) && *ph_node));
+func_end:
+	dev_dbg(bridge, "%s: hprocessor: %p pNodeId: %p pargs: %p attr_in: %p "
+		"ph_node: %p status: 0x%x\n", __func__, hprocessor,
+		pNodeId, pargs, attr_in, ph_node, status);
+	return status;
+}
+
+/*
+ *  ======== node_alloc_msg_buf ========
+ *  Purpose:
+ *      Allocates buffer for zero copy messaging.
+ */
+DBAPI node_alloc_msg_buf(struct node_object *hnode, u32 usize,
+			 OPTIONAL IN OUT struct dsp_bufferattr *pattr,
+			 OUT u8 **pbuffer)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	int status = 0;
+	bool va_flag = false;
+	bool set_info;
+	u32 proc_id;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pbuffer != NULL);
+
+	DBC_REQUIRE(usize > 0);
+
+	if (!pnode)
+		status = -EFAULT;
+	else if (node_get_type(pnode) == NODE_DEVICE)
+		status = -EPERM;
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (pattr == NULL)
+		pattr = &node_dfltbufattrs;	/* set defaults */
+
+	status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+	if (proc_id != DSP_UNIT) {
+		DBC_ASSERT(NULL);
+		goto func_end;
+	}
+	/*  If segment ID includes MEM_SETVIRTUALSEGID then pbuffer is a
+	 *  virt  address, so set this info in this node's translator
+	 *  object for  future ref. If MEM_GETVIRTUALSEGID then retrieve
+	 *  virtual address  from node's translator. */
+	if ((pattr->segment_id & MEM_SETVIRTUALSEGID) ||
+	    (pattr->segment_id & MEM_GETVIRTUALSEGID)) {
+		va_flag = true;
+		set_info = (pattr->segment_id & MEM_SETVIRTUALSEGID) ?
+		    true : false;
+		/* Clear mask bits */
+		pattr->segment_id &= ~MEM_MASKVIRTUALSEGID;
+		/* Set/get this node's translators virtual address base/size */
+		status = cmm_xlator_info(pnode->xlator, pbuffer, usize,
+					 pattr->segment_id, set_info);
+	}
+	if (DSP_SUCCEEDED(status) && (!va_flag)) {
+		if (pattr->segment_id != 1) {
+			/* Node supports single SM segment only. */
+			status = -EBADR;
+		}
+		/*  Arbitrary SM buffer alignment not supported for host side
+		 *  allocs, but guaranteed for the following alignment
+		 *  values. */
+		switch (pattr->buf_alignment) {
+		case 0:
+		case 1:
+		case 2:
+		case 4:
+			break;
+		default:
+			/* alignment value not suportted */
+			status = -EPERM;
+			break;
+		}
+		if (DSP_SUCCEEDED(status)) {
+			/* allocate physical buffer from seg_id in node's
+			 * translator */
+			(void)cmm_xlator_alloc_buf(pnode->xlator, pbuffer,
+						   usize);
+			if (*pbuffer == NULL) {
+				pr_err("%s: error - Out of shared memory\n",
+				       __func__);
+				status = -ENOMEM;
+			}
+		}
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== node_change_priority ========
+ *  Purpose:
+ *      Change the priority of a node in the allocated state, or that is
+ *      currently running or paused on the target.
+ */
+int node_change_priority(struct node_object *hnode, s32 prio)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	struct node_mgr *hnode_mgr = NULL;
+	enum node_type node_type;
+	enum node_state state;
+	int status = 0;
+	u32 proc_id;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hnode || !hnode->hnode_mgr) {
+		status = -EFAULT;
+	} else {
+		hnode_mgr = hnode->hnode_mgr;
+		node_type = node_get_type(hnode);
+		if (node_type != NODE_TASK && node_type != NODE_DAISSOCKET)
+			status = -EPERM;
+		else if (prio < hnode_mgr->min_pri || prio > hnode_mgr->max_pri)
+			status = -EDOM;
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Enter critical section */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	state = node_get_state(hnode);
+	if (state == NODE_ALLOCATED || state == NODE_PAUSED) {
+		NODE_SET_PRIORITY(hnode, prio);
+	} else {
+		if (state != NODE_RUNNING) {
+			status = -EBADR;
+			goto func_cont;
+		}
+		status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+		if (proc_id == DSP_UNIT) {
+			status =
+			    disp_node_change_priority(hnode_mgr->disp_obj,
+						      hnode,
+						      hnode_mgr->ul_fxn_addrs
+						      [RMSCHANGENODEPRIORITY],
+						      hnode->node_env, prio);
+		}
+		if (DSP_SUCCEEDED(status))
+			NODE_SET_PRIORITY(hnode, prio);
+
+	}
+func_cont:
+	/* Leave critical section */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+func_end:
+	return status;
+}
+
+/*
+ *  ======== node_connect ========
+ *  Purpose:
+ *      Connect two nodes on the DSP, or a node on the DSP to the GPP.
+ */
+int node_connect(struct node_object *hNode1, u32 uStream1,
+			struct node_object *hNode2,
+			u32 uStream2, OPTIONAL IN struct dsp_strmattr *pattrs,
+			OPTIONAL IN struct dsp_cbdata *conn_param)
+{
+	struct node_mgr *hnode_mgr;
+	char *pstr_dev_name = NULL;
+	enum node_type node1_type = NODE_TASK;
+	enum node_type node2_type = NODE_TASK;
+	struct node_strmdef *pstrm_def;
+	struct node_strmdef *input = NULL;
+	struct node_strmdef *output = NULL;
+	struct node_object *dev_node_obj;
+	struct node_object *hnode;
+	struct stream_chnl *pstream;
+	u32 pipe_id = GB_NOBITS;
+	u32 chnl_id = GB_NOBITS;
+	s8 chnl_mode;
+	u32 dw_length;
+	int status = 0;
+	DBC_REQUIRE(refs > 0);
+
+	if ((hNode1 != (struct node_object *)DSP_HGPPNODE && !hNode1) ||
+	    (hNode2 != (struct node_object *)DSP_HGPPNODE && !hNode2))
+		status = -EFAULT;
+
+	if (DSP_SUCCEEDED(status)) {
+		/* The two nodes must be on the same processor */
+		if (hNode1 != (struct node_object *)DSP_HGPPNODE &&
+		    hNode2 != (struct node_object *)DSP_HGPPNODE &&
+		    hNode1->hnode_mgr != hNode2->hnode_mgr)
+			status = -EPERM;
+		/* Cannot connect a node to itself */
+		if (hNode1 == hNode2)
+			status = -EPERM;
+
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* node_get_type() will return NODE_GPP if hnode =
+		 * DSP_HGPPNODE. */
+		node1_type = node_get_type(hNode1);
+		node2_type = node_get_type(hNode2);
+		/* Check stream indices ranges */
+		if ((node1_type != NODE_GPP && node1_type != NODE_DEVICE &&
+		     uStream1 >= MAX_OUTPUTS(hNode1)) || (node2_type != NODE_GPP
+							  && node2_type !=
+							  NODE_DEVICE
+							  && uStream2 >=
+							  MAX_INPUTS(hNode2)))
+			status = -EINVAL;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/*
+		 *  Only the following types of connections are allowed:
+		 *      task/dais socket < == > task/dais socket
+		 *      task/dais socket < == > device
+		 *      task/dais socket < == > GPP
+		 *
+		 *  ie, no message nodes, and at least one task or dais
+		 *  socket node.
+		 */
+		if (node1_type == NODE_MESSAGE || node2_type == NODE_MESSAGE ||
+		    (node1_type != NODE_TASK && node1_type != NODE_DAISSOCKET &&
+		     node2_type != NODE_TASK && node2_type != NODE_DAISSOCKET))
+			status = -EPERM;
+	}
+	/*
+	 * Check stream mode. Default is STRMMODE_PROCCOPY.
+	 */
+	if (DSP_SUCCEEDED(status) && pattrs) {
+		if (pattrs->strm_mode != STRMMODE_PROCCOPY)
+			status = -EPERM;	/* illegal stream mode */
+
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (node1_type != NODE_GPP) {
+		hnode_mgr = hNode1->hnode_mgr;
+	} else {
+		DBC_ASSERT(hNode2 != (struct node_object *)DSP_HGPPNODE);
+		hnode_mgr = hNode2->hnode_mgr;
+	}
+	/* Enter critical section */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	/* Nodes must be in the allocated state */
+	if (node1_type != NODE_GPP && node_get_state(hNode1) != NODE_ALLOCATED)
+		status = -EBADR;
+
+	if (node2_type != NODE_GPP && node_get_state(hNode2) != NODE_ALLOCATED)
+		status = -EBADR;
+
+	if (DSP_SUCCEEDED(status)) {
+		/*  Check that stream indices for task and dais socket nodes
+		 *  are not already be used. (Device nodes checked later) */
+		if (node1_type == NODE_TASK || node1_type == NODE_DAISSOCKET) {
+			output =
+			    &(hNode1->create_args.asa.
+			      task_arg_obj.strm_out_def[uStream1]);
+			if (output->sz_device != NULL)
+				status = -EISCONN;
+
+		}
+		if (node2_type == NODE_TASK || node2_type == NODE_DAISSOCKET) {
+			input =
+			    &(hNode2->create_args.asa.
+			      task_arg_obj.strm_in_def[uStream2]);
+			if (input->sz_device != NULL)
+				status = -EISCONN;
+
+		}
+	}
+	/* Connecting two task nodes? */
+	if (DSP_SUCCEEDED(status) && ((node1_type == NODE_TASK ||
+				       node1_type == NODE_DAISSOCKET)
+				      && (node2_type == NODE_TASK
+					  || node2_type == NODE_DAISSOCKET))) {
+		/* Find available pipe */
+		pipe_id = gb_findandset(hnode_mgr->pipe_map);
+		if (pipe_id == GB_NOBITS) {
+			status = -ECONNREFUSED;
+		} else {
+			hNode1->outputs[uStream1].type = NODECONNECT;
+			hNode2->inputs[uStream2].type = NODECONNECT;
+			hNode1->outputs[uStream1].dev_id = pipe_id;
+			hNode2->inputs[uStream2].dev_id = pipe_id;
+			output->sz_device = kzalloc(PIPENAMELEN + 1,
+							GFP_KERNEL);
+			input->sz_device = kzalloc(PIPENAMELEN + 1, GFP_KERNEL);
+			if (output->sz_device == NULL ||
+			    input->sz_device == NULL) {
+				/* Undo the connection */
+				kfree(output->sz_device);
+
+				kfree(input->sz_device);
+
+				output->sz_device = NULL;
+				input->sz_device = NULL;
+				gb_clear(hnode_mgr->pipe_map, pipe_id);
+				status = -ENOMEM;
+			} else {
+				/* Copy "/dbpipe<pipId>" name to device names */
+				sprintf(output->sz_device, "%s%d",
+					PIPEPREFIX, pipe_id);
+				strcpy(input->sz_device, output->sz_device);
+			}
+		}
+	}
+	/* Connecting task node to host? */
+	if (DSP_SUCCEEDED(status) && (node1_type == NODE_GPP ||
+				      node2_type == NODE_GPP)) {
+		if (node1_type == NODE_GPP) {
+			chnl_mode = CHNL_MODETODSP;
+		} else {
+			DBC_ASSERT(node2_type == NODE_GPP);
+			chnl_mode = CHNL_MODEFROMDSP;
+		}
+		/*  Reserve a channel id. We need to put the name "/host<id>"
+		 *  in the node's create_args, but the host
+		 *  side channel will not be opened until DSPStream_Open is
+		 *  called for this node. */
+		if (pattrs) {
+			if (pattrs->strm_mode == STRMMODE_RDMA) {
+				chnl_id =
+				    gb_findandset(hnode_mgr->dma_chnl_map);
+				/* dma chans are 2nd transport chnl set
+				 * ids(e.g. 16-31) */
+				(chnl_id != GB_NOBITS) ?
+				    (chnl_id =
+				     chnl_id +
+				     hnode_mgr->ul_num_chnls) : chnl_id;
+			} else if (pattrs->strm_mode == STRMMODE_ZEROCOPY) {
+				chnl_id = gb_findandset(hnode_mgr->zc_chnl_map);
+				/* zero-copy chans are 3nd transport set
+				 * (e.g. 32-47) */
+				(chnl_id != GB_NOBITS) ? (chnl_id = chnl_id +
+							  (2 *
+							   hnode_mgr->
+							   ul_num_chnls))
+				    : chnl_id;
+			} else {	/* must be PROCCOPY */
+				DBC_ASSERT(pattrs->strm_mode ==
+					   STRMMODE_PROCCOPY);
+				chnl_id = gb_findandset(hnode_mgr->chnl_map);
+				/* e.g. 0-15 */
+			}
+		} else {
+			/* default to PROCCOPY */
+			chnl_id = gb_findandset(hnode_mgr->chnl_map);
+		}
+		if (chnl_id == GB_NOBITS) {
+			status = -ECONNREFUSED;
+			goto func_cont2;
+		}
+		pstr_dev_name = kzalloc(HOSTNAMELEN + 1, GFP_KERNEL);
+		if (pstr_dev_name != NULL)
+			goto func_cont2;
+
+		if (pattrs) {
+			if (pattrs->strm_mode == STRMMODE_RDMA) {
+				gb_clear(hnode_mgr->dma_chnl_map, chnl_id -
+					 hnode_mgr->ul_num_chnls);
+			} else if (pattrs->strm_mode == STRMMODE_ZEROCOPY) {
+				gb_clear(hnode_mgr->zc_chnl_map, chnl_id -
+					 (2 * hnode_mgr->ul_num_chnls));
+			} else {
+				DBC_ASSERT(pattrs->strm_mode ==
+					   STRMMODE_PROCCOPY);
+				gb_clear(hnode_mgr->chnl_map, chnl_id);
+			}
+		} else {
+			gb_clear(hnode_mgr->chnl_map, chnl_id);
+		}
+		status = -ENOMEM;
+func_cont2:
+		if (DSP_SUCCEEDED(status)) {
+			if (hNode1 == (struct node_object *)DSP_HGPPNODE) {
+				hNode2->inputs[uStream2].type = HOSTCONNECT;
+				hNode2->inputs[uStream2].dev_id = chnl_id;
+				input->sz_device = pstr_dev_name;
+			} else {
+				hNode1->outputs[uStream1].type = HOSTCONNECT;
+				hNode1->outputs[uStream1].dev_id = chnl_id;
+				output->sz_device = pstr_dev_name;
+			}
+			sprintf(pstr_dev_name, "%s%d", HOSTPREFIX, chnl_id);
+		}
+	}
+	/* Connecting task node to device node? */
+	if (DSP_SUCCEEDED(status) && ((node1_type == NODE_DEVICE) ||
+				      (node2_type == NODE_DEVICE))) {
+		if (node2_type == NODE_DEVICE) {
+			/* node1 == > device */
+			dev_node_obj = hNode2;
+			hnode = hNode1;
+			pstream = &(hNode1->outputs[uStream1]);
+			pstrm_def = output;
+		} else {
+			/* device == > node2 */
+			dev_node_obj = hNode1;
+			hnode = hNode2;
+			pstream = &(hNode2->inputs[uStream2]);
+			pstrm_def = input;
+		}
+		/* Set up create args */
+		pstream->type = DEVICECONNECT;
+		dw_length = strlen(dev_node_obj->pstr_dev_name);
+		if (conn_param != NULL) {
+			pstrm_def->sz_device = kzalloc(dw_length + 1 +
+							conn_param->cb_data,
+							GFP_KERNEL);
+		} else {
+			pstrm_def->sz_device = kzalloc(dw_length + 1,
+							GFP_KERNEL);
+		}
+		if (pstrm_def->sz_device == NULL) {
+			status = -ENOMEM;
+		} else {
+			/* Copy device name */
+			strncpy(pstrm_def->sz_device,
+				dev_node_obj->pstr_dev_name, dw_length);
+			if (conn_param != NULL) {
+				strncat(pstrm_def->sz_device,
+					(char *)conn_param->node_data,
+					(u32) conn_param->cb_data);
+			}
+			dev_node_obj->device_owner = hnode;
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Fill in create args */
+		if (node1_type == NODE_TASK || node1_type == NODE_DAISSOCKET) {
+			hNode1->create_args.asa.task_arg_obj.num_outputs++;
+			fill_stream_def(hNode1, output, pattrs);
+		}
+		if (node2_type == NODE_TASK || node2_type == NODE_DAISSOCKET) {
+			hNode2->create_args.asa.task_arg_obj.num_inputs++;
+			fill_stream_def(hNode2, input, pattrs);
+		}
+		/* Update hNode1 and hNode2 stream_connect */
+		if (node1_type != NODE_GPP && node1_type != NODE_DEVICE) {
+			hNode1->num_outputs++;
+			if (uStream1 > hNode1->max_output_index)
+				hNode1->max_output_index = uStream1;
+
+		}
+		if (node2_type != NODE_GPP && node2_type != NODE_DEVICE) {
+			hNode2->num_inputs++;
+			if (uStream2 > hNode2->max_input_index)
+				hNode2->max_input_index = uStream2;
+
+		}
+		fill_stream_connect(hNode1, hNode2, uStream1, uStream2);
+	}
+	/* end of sync_enter_cs */
+	/* Exit critical section */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+func_end:
+	dev_dbg(bridge, "%s: hNode1: %p uStream1: %d hNode2: %p uStream2: %d"
+		"pattrs: %p status: 0x%x\n", __func__, hNode1,
+		uStream1, hNode2, uStream2, pattrs, status);
+	return status;
+}
+
+/*
+ *  ======== node_create ========
+ *  Purpose:
+ *      Create a node on the DSP by remotely calling the node's create function.
+ */
+int node_create(struct node_object *hnode)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	struct node_mgr *hnode_mgr;
+	struct bridge_drv_interface *intf_fxns;
+	u32 ul_create_fxn;
+	enum node_type node_type;
+	int status = 0;
+	int status1 = 0;
+	struct dsp_cbdata cb_data;
+	u32 proc_id = 255;
+	struct dsp_processorstate proc_state;
+	struct proc_object *hprocessor;
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+	struct dspbridge_platform_data *pdata =
+	    omap_dspbridge_dev->dev.platform_data;
+#endif
+
+	DBC_REQUIRE(refs > 0);
+	if (!pnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	hprocessor = hnode->hprocessor;
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in error state then don't attempt to create
+	   new node */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+	/* create struct dsp_cbdata struct for PWR calls */
+	cb_data.cb_data = PWR_TIMEOUT;
+	node_type = node_get_type(hnode);
+	hnode_mgr = hnode->hnode_mgr;
+	intf_fxns = hnode_mgr->intf_fxns;
+	/* Get access to node dispatcher */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	/* Check node state */
+	if (node_get_state(hnode) != NODE_ALLOCATED)
+		status = -EBADR;
+
+	if (DSP_SUCCEEDED(status))
+		status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+
+	if (DSP_FAILED(status))
+		goto func_cont2;
+
+	if (proc_id != DSP_UNIT)
+		goto func_cont2;
+
+	/* Make sure streams are properly connected */
+	if ((hnode->num_inputs && hnode->max_input_index >
+	     hnode->num_inputs - 1) ||
+	    (hnode->num_outputs && hnode->max_output_index >
+	     hnode->num_outputs - 1))
+		status = -ENOTCONN;
+
+	if (DSP_SUCCEEDED(status)) {
+		/* If node's create function is not loaded, load it */
+		/* Boost the OPP level to max level that DSP can be requested */
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+		if (pdata->cpu_set_freq)
+			(*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP3]);
+#endif
+		status = hnode_mgr->nldr_fxns.pfn_load(hnode->nldr_node_obj,
+						       NLDR_CREATE);
+		/* Get address of node's create function */
+		if (DSP_SUCCEEDED(status)) {
+			hnode->loaded = true;
+			if (node_type != NODE_DEVICE) {
+				status = get_fxn_address(hnode, &ul_create_fxn,
+							 CREATEPHASE);
+			}
+		} else {
+			pr_err("%s: failed to load create code: 0x%x\n",
+			       __func__, status);
+		}
+		/* Request the lowest OPP level */
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+		if (pdata->cpu_set_freq)
+			(*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP1]);
+#endif
+		/* Get address of iAlg functions, if socket node */
+		if (DSP_SUCCEEDED(status)) {
+			if (node_type == NODE_DAISSOCKET) {
+				status = hnode_mgr->nldr_fxns.pfn_get_fxn_addr
+				    (hnode->nldr_node_obj,
+				     hnode->dcd_props.obj_data.node_obj.
+				     pstr_i_alg_name,
+				     &hnode->create_args.asa.
+				     task_arg_obj.ul_dais_arg);
+			}
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		if (node_type != NODE_DEVICE) {
+			status = disp_node_create(hnode_mgr->disp_obj, hnode,
+						  hnode_mgr->ul_fxn_addrs
+						  [RMSCREATENODE],
+						  ul_create_fxn,
+						  &(hnode->create_args),
+						  &(hnode->node_env));
+			if (DSP_SUCCEEDED(status)) {
+				/* Set the message queue id to the node env
+				 * pointer */
+				intf_fxns = hnode_mgr->intf_fxns;
+				(*intf_fxns->pfn_msg_set_queue_id) (hnode->
+							msg_queue_obj,
+							hnode->node_env);
+			}
+		}
+	}
+	/*  Phase II/Overlays: Create, execute, delete phases  possibly in
+	 *  different files/sections. */
+	if (hnode->loaded && hnode->phase_split) {
+		/* If create code was dynamically loaded, we can now unload
+		 * it. */
+		status1 = hnode_mgr->nldr_fxns.pfn_unload(hnode->nldr_node_obj,
+							  NLDR_CREATE);
+		hnode->loaded = false;
+	}
+	if (DSP_FAILED(status1))
+		pr_err("%s: Failed to unload create code: 0x%x\n",
+		       __func__, status1);
+func_cont2:
+	/* Update node state and node manager state */
+	if (DSP_SUCCEEDED(status)) {
+		NODE_SET_STATE(hnode, NODE_CREATED);
+		hnode_mgr->num_created++;
+		goto func_cont;
+	}
+	if (status != -EBADR) {
+		/* Put back in NODE_ALLOCATED state if error occurred */
+		NODE_SET_STATE(hnode, NODE_ALLOCATED);
+	}
+func_cont:
+	/* Free access to node dispatcher */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+func_end:
+	if (DSP_SUCCEEDED(status)) {
+		proc_notify_clients(hnode->hprocessor, DSP_NODESTATECHANGE);
+		ntfy_notify(hnode->ntfy_obj, DSP_NODESTATECHANGE);
+	}
+
+	dev_dbg(bridge, "%s: hnode: %p status: 0x%x\n", __func__,
+		hnode, status);
+	return status;
+}
+
+/*
+ *  ======== node_create_mgr ========
+ *  Purpose:
+ *      Create a NODE Manager object.
+ */
+int node_create_mgr(OUT struct node_mgr **phNodeMgr,
+			   struct dev_object *hdev_obj)
+{
+	u32 i;
+	struct node_mgr *node_mgr_obj = NULL;
+	struct disp_attr disp_attr_obj;
+	char *sz_zl_file = "";
+	struct nldr_attrs nldr_attrs_obj;
+	int status = 0;
+	u8 dev_type;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phNodeMgr != NULL);
+	DBC_REQUIRE(hdev_obj != NULL);
+
+	*phNodeMgr = NULL;
+	/* Allocate Node manager object */
+	node_mgr_obj = kzalloc(sizeof(struct node_mgr), GFP_KERNEL);
+	if (node_mgr_obj) {
+		node_mgr_obj->hdev_obj = hdev_obj;
+		node_mgr_obj->node_list = kzalloc(sizeof(struct lst_list),
+							GFP_KERNEL);
+		node_mgr_obj->pipe_map = gb_create(MAXPIPES);
+		node_mgr_obj->pipe_done_map = gb_create(MAXPIPES);
+		if (node_mgr_obj->node_list == NULL
+		    || node_mgr_obj->pipe_map == NULL
+		    || node_mgr_obj->pipe_done_map == NULL) {
+			status = -ENOMEM;
+		} else {
+			INIT_LIST_HEAD(&node_mgr_obj->node_list->head);
+			node_mgr_obj->ntfy_obj = kmalloc(
+				sizeof(struct ntfy_object), GFP_KERNEL);
+			if (node_mgr_obj->ntfy_obj)
+				ntfy_init(node_mgr_obj->ntfy_obj);
+			else
+				status = -ENOMEM;
+		}
+		node_mgr_obj->num_created = 0;
+	} else {
+		status = -ENOMEM;
+	}
+	/* get devNodeType */
+	if (DSP_SUCCEEDED(status))
+		status = dev_get_dev_type(hdev_obj, &dev_type);
+
+	/* Create the DCD Manager */
+	if (DSP_SUCCEEDED(status)) {
+		status =
+		    dcd_create_manager(sz_zl_file, &node_mgr_obj->hdcd_mgr);
+		if (DSP_SUCCEEDED(status))
+			status = get_proc_props(node_mgr_obj, hdev_obj);
+
+	}
+	/* Create NODE Dispatcher */
+	if (DSP_SUCCEEDED(status)) {
+		disp_attr_obj.ul_chnl_offset = node_mgr_obj->ul_chnl_offset;
+		disp_attr_obj.ul_chnl_buf_size = node_mgr_obj->ul_chnl_buf_size;
+		disp_attr_obj.proc_family = node_mgr_obj->proc_family;
+		disp_attr_obj.proc_type = node_mgr_obj->proc_type;
+		status =
+		    disp_create(&node_mgr_obj->disp_obj, hdev_obj,
+				&disp_attr_obj);
+	}
+	/* Create a STRM Manager */
+	if (DSP_SUCCEEDED(status))
+		status = strm_create(&node_mgr_obj->strm_mgr_obj, hdev_obj);
+
+	if (DSP_SUCCEEDED(status)) {
+		dev_get_intf_fxns(hdev_obj, &node_mgr_obj->intf_fxns);
+		/* Get msg_ctrl queue manager */
+		dev_get_msg_mgr(hdev_obj, &node_mgr_obj->msg_mgr_obj);
+		mutex_init(&node_mgr_obj->node_mgr_lock);
+		node_mgr_obj->chnl_map = gb_create(node_mgr_obj->ul_num_chnls);
+		/* dma chnl map. ul_num_chnls is # per transport */
+		node_mgr_obj->dma_chnl_map =
+		    gb_create(node_mgr_obj->ul_num_chnls);
+		node_mgr_obj->zc_chnl_map =
+		    gb_create(node_mgr_obj->ul_num_chnls);
+		if ((node_mgr_obj->chnl_map == NULL)
+		    || (node_mgr_obj->dma_chnl_map == NULL)
+		    || (node_mgr_obj->zc_chnl_map == NULL)) {
+			status = -ENOMEM;
+		} else {
+			/* Block out reserved channels */
+			for (i = 0; i < node_mgr_obj->ul_chnl_offset; i++)
+				gb_set(node_mgr_obj->chnl_map, i);
+
+			/* Block out channels reserved for RMS */
+			gb_set(node_mgr_obj->chnl_map,
+			       node_mgr_obj->ul_chnl_offset);
+			gb_set(node_mgr_obj->chnl_map,
+			       node_mgr_obj->ul_chnl_offset + 1);
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* NO RM Server on the IVA */
+		if (dev_type != IVA_UNIT) {
+			/* Get addresses of any RMS functions loaded */
+			status = get_rms_fxns(node_mgr_obj);
+		}
+	}
+
+	/* Get loader functions and create loader */
+	if (DSP_SUCCEEDED(status))
+		node_mgr_obj->nldr_fxns = nldr_fxns;	/* Dyn loader funcs */
+
+	if (DSP_SUCCEEDED(status)) {
+		nldr_attrs_obj.pfn_ovly = ovly;
+		nldr_attrs_obj.pfn_write = mem_write;
+		nldr_attrs_obj.us_dsp_word_size = node_mgr_obj->udsp_word_size;
+		nldr_attrs_obj.us_dsp_mau_size = node_mgr_obj->udsp_mau_size;
+		node_mgr_obj->loader_init = node_mgr_obj->nldr_fxns.pfn_init();
+		status =
+		    node_mgr_obj->nldr_fxns.pfn_create(&node_mgr_obj->nldr_obj,
+						       hdev_obj,
+						       &nldr_attrs_obj);
+	}
+	if (DSP_SUCCEEDED(status))
+		*phNodeMgr = node_mgr_obj;
+	else
+		delete_node_mgr(node_mgr_obj);
+
+	DBC_ENSURE((DSP_FAILED(status) && (*phNodeMgr == NULL)) ||
+			(DSP_SUCCEEDED(status) && *phNodeMgr));
+
+	return status;
+}
+
+/*
+ *  ======== node_delete ========
+ *  Purpose:
+ *      Delete a node on the DSP by remotely calling the node's delete function.
+ *      Loads the node's delete function if necessary. Free GPP side resources
+ *      after node's delete function returns.
+ */
+int node_delete(struct node_object *hnode,
+		       struct process_context *pr_ctxt)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	struct node_mgr *hnode_mgr;
+	struct proc_object *hprocessor;
+	struct disp_object *disp_obj;
+	u32 ul_delete_fxn;
+	enum node_type node_type;
+	enum node_state state;
+	int status = 0;
+	int status1 = 0;
+	struct dsp_cbdata cb_data;
+	u32 proc_id;
+	struct bridge_drv_interface *intf_fxns;
+
+	void *node_res;
+
+	struct dsp_processorstate proc_state;
+	DBC_REQUIRE(refs > 0);
+
+	if (!hnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	/* create struct dsp_cbdata struct for PWR call */
+	cb_data.cb_data = PWR_TIMEOUT;
+	hnode_mgr = hnode->hnode_mgr;
+	hprocessor = hnode->hprocessor;
+	disp_obj = hnode_mgr->disp_obj;
+	node_type = node_get_type(hnode);
+	intf_fxns = hnode_mgr->intf_fxns;
+	/* Enter critical section */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	state = node_get_state(hnode);
+	/*  Execute delete phase code for non-device node in all cases
+	 *  except when the node was only allocated. Delete phase must be
+	 *  executed even if create phase was executed, but failed.
+	 *  If the node environment pointer is non-NULL, the delete phase
+	 *  code must be  executed. */
+	if (!(state == NODE_ALLOCATED && hnode->node_env == (u32) NULL) &&
+	    node_type != NODE_DEVICE) {
+		status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+		if (DSP_FAILED(status))
+			goto func_cont1;
+
+		if (proc_id == DSP_UNIT || proc_id == IVA_UNIT) {
+			/*  If node has terminated, execute phase code will
+			 *  have already been unloaded in node_on_exit(). If the
+			 *  node is PAUSED, the execute phase is loaded, and it
+			 *  is now ok to unload it. If the node is running, we
+			 *  will unload the execute phase only after deleting
+			 *  the node. */
+			if (state == NODE_PAUSED && hnode->loaded &&
+			    hnode->phase_split) {
+				/* Ok to unload execute code as long as node
+				 * is not * running */
+				status1 =
+				    hnode_mgr->nldr_fxns.
+				    pfn_unload(hnode->nldr_node_obj,
+					       NLDR_EXECUTE);
+				hnode->loaded = false;
+				NODE_SET_STATE(hnode, NODE_DONE);
+			}
+			/* Load delete phase code if not loaded or if haven't
+			 * * unloaded EXECUTE phase */
+			if ((!(hnode->loaded) || (state == NODE_RUNNING)) &&
+			    hnode->phase_split) {
+				status =
+				    hnode_mgr->nldr_fxns.
+				    pfn_load(hnode->nldr_node_obj, NLDR_DELETE);
+				if (DSP_SUCCEEDED(status))
+					hnode->loaded = true;
+				else
+					pr_err("%s: fail - load delete code:"
+					       " 0x%x\n", __func__, status);
+			}
+		}
+func_cont1:
+		if (DSP_SUCCEEDED(status)) {
+			/* Unblock a thread trying to terminate the node */
+			(void)sync_set_event(hnode->sync_done);
+			if (proc_id == DSP_UNIT) {
+				/* ul_delete_fxn = address of node's delete
+				 * function */
+				status = get_fxn_address(hnode, &ul_delete_fxn,
+							 DELETEPHASE);
+			} else if (proc_id == IVA_UNIT)
+				ul_delete_fxn = (u32) hnode->node_env;
+			if (DSP_SUCCEEDED(status)) {
+				status = proc_get_state(hprocessor,
+						&proc_state,
+						sizeof(struct
+						       dsp_processorstate));
+				if (proc_state.proc_state != PROC_ERROR) {
+					status =
+					    disp_node_delete(disp_obj, hnode,
+							     hnode_mgr->
+							     ul_fxn_addrs
+							     [RMSDELETENODE],
+							     ul_delete_fxn,
+							     hnode->node_env);
+				} else
+					NODE_SET_STATE(hnode, NODE_DONE);
+
+				/* Unload execute, if not unloaded, and delete
+				 * function */
+				if (state == NODE_RUNNING &&
+				    hnode->phase_split) {
+					status1 =
+					    hnode_mgr->nldr_fxns.
+					    pfn_unload(hnode->nldr_node_obj,
+						       NLDR_EXECUTE);
+				}
+				if (DSP_FAILED(status1))
+					pr_err("%s: fail - unload execute code:"
+					       " 0x%x\n", __func__, status1);
+
+				status1 =
+				    hnode_mgr->nldr_fxns.pfn_unload(hnode->
+							    nldr_node_obj,
+							    NLDR_DELETE);
+				hnode->loaded = false;
+				if (DSP_FAILED(status1))
+					pr_err("%s: fail - unload delete code: "
+					       "0x%x\n", __func__, status1);
+			}
+		}
+	}
+	/* Free host side resources even if a failure occurred */
+	/* Remove node from hnode_mgr->node_list */
+	lst_remove_elem(hnode_mgr->node_list, (struct list_head *)hnode);
+	hnode_mgr->num_nodes--;
+	/* Decrement count of nodes created on DSP */
+	if ((state != NODE_ALLOCATED) || ((state == NODE_ALLOCATED) &&
+					  (hnode->node_env != (u32) NULL)))
+		hnode_mgr->num_created--;
+	/*  Free host-side resources allocated by node_create()
+	 *  delete_node() fails if SM buffers not freed by client! */
+	if (drv_get_node_res_element(hnode, &node_res, pr_ctxt) !=
+	    -ENOENT)
+		drv_proc_node_update_status(node_res, false);
+	delete_node(hnode, pr_ctxt);
+
+	drv_remove_node_res_element(node_res, pr_ctxt);
+	/* Exit critical section */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+	proc_notify_clients(hprocessor, DSP_NODESTATECHANGE);
+func_end:
+	dev_dbg(bridge, "%s: hnode: %p status 0x%x\n", __func__, hnode, status);
+	return status;
+}
+
+/*
+ *  ======== node_delete_mgr ========
+ *  Purpose:
+ *      Delete the NODE Manager.
+ */
+int node_delete_mgr(struct node_mgr *hnode_mgr)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (hnode_mgr)
+		delete_node_mgr(hnode_mgr);
+	else
+		status = -EFAULT;
+
+	return status;
+}
+
+/*
+ *  ======== node_enum_nodes ========
+ *  Purpose:
+ *      Enumerate currently allocated nodes.
+ */
+int node_enum_nodes(struct node_mgr *hnode_mgr, void **node_tab,
+			   u32 node_tab_size, OUT u32 *pu_num_nodes,
+			   OUT u32 *pu_allocated)
+{
+	struct node_object *hnode;
+	u32 i;
+	int status = 0;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(node_tab != NULL || node_tab_size == 0);
+	DBC_REQUIRE(pu_num_nodes != NULL);
+	DBC_REQUIRE(pu_allocated != NULL);
+
+	if (!hnode_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	/* Enter critical section */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	if (hnode_mgr->num_nodes > node_tab_size) {
+		*pu_allocated = hnode_mgr->num_nodes;
+		*pu_num_nodes = 0;
+		status = -EINVAL;
+	} else {
+		hnode = (struct node_object *)lst_first(hnode_mgr->
+			node_list);
+		for (i = 0; i < hnode_mgr->num_nodes; i++) {
+			DBC_ASSERT(hnode);
+			node_tab[i] = hnode;
+			hnode = (struct node_object *)lst_next
+				(hnode_mgr->node_list,
+				(struct list_head *)hnode);
+		}
+		*pu_allocated = *pu_num_nodes = hnode_mgr->num_nodes;
+	}
+	/* end of sync_enter_cs */
+	/* Exit critical section */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+func_end:
+	return status;
+}
+
+/*
+ *  ======== node_exit ========
+ *  Purpose:
+ *      Discontinue usage of NODE module.
+ */
+void node_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== node_free_msg_buf ========
+ *  Purpose:
+ *      Frees the message buffer.
+ */
+int node_free_msg_buf(struct node_object *hnode, IN u8 * pbuffer,
+			     OPTIONAL struct dsp_bufferattr *pattr)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	int status = 0;
+	u32 proc_id;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pbuffer != NULL);
+	DBC_REQUIRE(pnode != NULL);
+	DBC_REQUIRE(pnode->xlator != NULL);
+
+	if (!hnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+	if (proc_id == DSP_UNIT) {
+		if (DSP_SUCCEEDED(status)) {
+			if (pattr == NULL) {
+				/* set defaults */
+				pattr = &node_dfltbufattrs;
+			}
+			/* Node supports single SM segment only */
+			if (pattr->segment_id != 1)
+				status = -EBADR;
+
+			/* pbuffer is clients Va. */
+			status = cmm_xlator_free_buf(pnode->xlator, pbuffer);
+		}
+	} else {
+		DBC_ASSERT(NULL);	/* BUG */
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== node_get_attr ========
+ *  Purpose:
+ *      Copy the current attributes of the specified node into a dsp_nodeattr
+ *      structure.
+ */
+int node_get_attr(struct node_object *hnode,
+			 OUT struct dsp_nodeattr *pattr, u32 attr_size)
+{
+	struct node_mgr *hnode_mgr;
+	int status = 0;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pattr != NULL);
+	DBC_REQUIRE(attr_size >= sizeof(struct dsp_nodeattr));
+
+	if (!hnode) {
+		status = -EFAULT;
+	} else {
+		hnode_mgr = hnode->hnode_mgr;
+		/* Enter hnode_mgr critical section (since we're accessing
+		 * data that could be changed by node_change_priority() and
+		 * node_connect(). */
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+		pattr->cb_struct = sizeof(struct dsp_nodeattr);
+		/* dsp_nodeattrin */
+		pattr->in_node_attr_in.cb_struct =
+				 sizeof(struct dsp_nodeattrin);
+		pattr->in_node_attr_in.prio = hnode->prio;
+		pattr->in_node_attr_in.utimeout = hnode->utimeout;
+		pattr->in_node_attr_in.heap_size =
+			hnode->create_args.asa.task_arg_obj.heap_size;
+		pattr->in_node_attr_in.pgpp_virt_addr = (void *)
+			hnode->create_args.asa.task_arg_obj.ugpp_heap_addr;
+		pattr->node_attr_inputs = hnode->num_gpp_inputs;
+		pattr->node_attr_outputs = hnode->num_gpp_outputs;
+		/* dsp_nodeinfo */
+		get_node_info(hnode, &(pattr->node_info));
+		/* end of sync_enter_cs */
+		/* Exit critical section */
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+	}
+	return status;
+}
+
+/*
+ *  ======== node_get_channel_id ========
+ *  Purpose:
+ *      Get the channel index reserved for a stream connection between the
+ *      host and a node.
+ */
+int node_get_channel_id(struct node_object *hnode, u32 dir, u32 index,
+			       OUT u32 *pulId)
+{
+	enum node_type node_type;
+	int status = -EINVAL;
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(dir == DSP_TONODE || dir == DSP_FROMNODE);
+	DBC_REQUIRE(pulId != NULL);
+
+	if (!hnode) {
+		status = -EFAULT;
+		return status;
+	}
+	node_type = node_get_type(hnode);
+	if (node_type != NODE_TASK && node_type != NODE_DAISSOCKET) {
+		status = -EPERM;
+		return status;
+	}
+	if (dir == DSP_TONODE) {
+		if (index < MAX_INPUTS(hnode)) {
+			if (hnode->inputs[index].type == HOSTCONNECT) {
+				*pulId = hnode->inputs[index].dev_id;
+				status = 0;
+			}
+		}
+	} else {
+		DBC_ASSERT(dir == DSP_FROMNODE);
+		if (index < MAX_OUTPUTS(hnode)) {
+			if (hnode->outputs[index].type == HOSTCONNECT) {
+				*pulId = hnode->outputs[index].dev_id;
+				status = 0;
+			}
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== node_get_message ========
+ *  Purpose:
+ *      Retrieve a message from a node on the DSP.
+ */
+int node_get_message(struct node_object *hnode,
+			    OUT struct dsp_msg *pmsg, u32 utimeout)
+{
+	struct node_mgr *hnode_mgr;
+	enum node_type node_type;
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+	void *tmp_buf;
+	struct dsp_processorstate proc_state;
+	struct proc_object *hprocessor;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pmsg != NULL);
+
+	if (!hnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	hprocessor = hnode->hprocessor;
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in error state then don't attempt to get the
+	   message */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+	hnode_mgr = hnode->hnode_mgr;
+	node_type = node_get_type(hnode);
+	if (node_type != NODE_MESSAGE && node_type != NODE_TASK &&
+	    node_type != NODE_DAISSOCKET) {
+		status = -EPERM;
+		goto func_end;
+	}
+	/*  This function will block unless a message is available. Since
+	 *  DSPNode_RegisterNotify() allows notification when a message
+	 *  is available, the system can be designed so that
+	 *  DSPNode_GetMessage() is only called when a message is
+	 *  available. */
+	intf_fxns = hnode_mgr->intf_fxns;
+	status =
+	    (*intf_fxns->pfn_msg_get) (hnode->msg_queue_obj, pmsg, utimeout);
+	/* Check if message contains SM descriptor */
+	if (DSP_FAILED(status) || !(pmsg->dw_cmd & DSP_RMSBUFDESC))
+		goto func_end;
+
+	/* Translate DSP byte addr to GPP Va. */
+	tmp_buf = cmm_xlator_translate(hnode->xlator,
+				       (void *)(pmsg->dw_arg1 *
+						hnode->hnode_mgr->
+						udsp_word_size), CMM_DSPPA2PA);
+	if (tmp_buf != NULL) {
+		/* now convert this GPP Pa to Va */
+		tmp_buf = cmm_xlator_translate(hnode->xlator, tmp_buf,
+					       CMM_PA2VA);
+		if (tmp_buf != NULL) {
+			/* Adjust SM size in msg */
+			pmsg->dw_arg1 = (u32) tmp_buf;
+			pmsg->dw_arg2 *= hnode->hnode_mgr->udsp_word_size;
+		} else {
+			status = -ESRCH;
+		}
+	} else {
+		status = -ESRCH;
+	}
+func_end:
+	dev_dbg(bridge, "%s: hnode: %p pmsg: %p utimeout: 0x%x\n", __func__,
+		hnode, pmsg, utimeout);
+	return status;
+}
+
+/*
+ *   ======== node_get_nldr_obj ========
+ */
+int node_get_nldr_obj(struct node_mgr *hnode_mgr,
+			     struct nldr_object **phNldrObj)
+{
+	int status = 0;
+	struct node_mgr *node_mgr_obj = hnode_mgr;
+	DBC_REQUIRE(phNldrObj != NULL);
+
+	if (!hnode_mgr)
+		status = -EFAULT;
+	else
+		*phNldrObj = node_mgr_obj->nldr_obj;
+
+	DBC_ENSURE(DSP_SUCCEEDED(status) || ((phNldrObj != NULL) &&
+					     (*phNldrObj == NULL)));
+	return status;
+}
+
+/*
+ *  ======== node_get_strm_mgr ========
+ *  Purpose:
+ *      Returns the Stream manager.
+ */
+int node_get_strm_mgr(struct node_object *hnode,
+			     struct strm_mgr **phStrmMgr)
+{
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hnode)
+		status = -EFAULT;
+	else
+		*phStrmMgr = hnode->hnode_mgr->strm_mgr_obj;
+
+	return status;
+}
+
+/*
+ *  ======== node_get_load_type ========
+ */
+enum nldr_loadtype node_get_load_type(struct node_object *hnode)
+{
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hnode);
+	if (!hnode) {
+		dev_dbg(bridge, "%s: Failed. hnode: %p\n", __func__, hnode);
+		return -1;
+	} else {
+		return hnode->dcd_props.obj_data.node_obj.us_load_type;
+	}
+}
+
+/*
+ *  ======== node_get_timeout ========
+ *  Purpose:
+ *      Returns the timeout value for this node.
+ */
+u32 node_get_timeout(struct node_object *hnode)
+{
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hnode);
+	if (!hnode) {
+		dev_dbg(bridge, "%s: failed. hnode: %p\n", __func__, hnode);
+		return 0;
+	} else {
+		return hnode->utimeout;
+	}
+}
+
+/*
+ *  ======== node_get_type ========
+ *  Purpose:
+ *      Returns the node type.
+ */
+enum node_type node_get_type(struct node_object *hnode)
+{
+	enum node_type node_type;
+
+	if (hnode == (struct node_object *)DSP_HGPPNODE)
+		node_type = NODE_GPP;
+	else {
+		if (!hnode)
+			node_type = -1;
+		else
+			node_type = hnode->ntype;
+	}
+	return node_type;
+}
+
+/*
+ *  ======== node_init ========
+ *  Purpose:
+ *      Initialize the NODE module.
+ */
+bool node_init(void)
+{
+	DBC_REQUIRE(refs >= 0);
+
+	refs++;
+
+	return true;
+}
+
+/*
+ *  ======== node_on_exit ========
+ *  Purpose:
+ *      Gets called when RMS_EXIT is received for a node.
+ */
+void node_on_exit(struct node_object *hnode, s32 nStatus)
+{
+	if (!hnode)
+		return;
+
+	/* Set node state to done */
+	NODE_SET_STATE(hnode, NODE_DONE);
+	hnode->exit_status = nStatus;
+	if (hnode->loaded && hnode->phase_split) {
+		(void)hnode->hnode_mgr->nldr_fxns.pfn_unload(hnode->
+							     nldr_node_obj,
+							     NLDR_EXECUTE);
+		hnode->loaded = false;
+	}
+	/* Unblock call to node_terminate */
+	(void)sync_set_event(hnode->sync_done);
+	/* Notify clients */
+	proc_notify_clients(hnode->hprocessor, DSP_NODESTATECHANGE);
+	ntfy_notify(hnode->ntfy_obj, DSP_NODESTATECHANGE);
+}
+
+/*
+ *  ======== node_pause ========
+ *  Purpose:
+ *      Suspend execution of a node currently running on the DSP.
+ */
+int node_pause(struct node_object *hnode)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	enum node_type node_type;
+	enum node_state state;
+	struct node_mgr *hnode_mgr;
+	int status = 0;
+	u32 proc_id;
+	struct dsp_processorstate proc_state;
+	struct proc_object *hprocessor;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hnode) {
+		status = -EFAULT;
+	} else {
+		node_type = node_get_type(hnode);
+		if (node_type != NODE_TASK && node_type != NODE_DAISSOCKET)
+			status = -EPERM;
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+
+	if (proc_id == IVA_UNIT)
+		status = -ENOSYS;
+
+	if (DSP_SUCCEEDED(status)) {
+		hnode_mgr = hnode->hnode_mgr;
+
+		/* Enter critical section */
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+		state = node_get_state(hnode);
+		/* Check node state */
+		if (state != NODE_RUNNING)
+			status = -EBADR;
+
+		if (DSP_FAILED(status))
+			goto func_cont;
+		hprocessor = hnode->hprocessor;
+		status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+		if (DSP_FAILED(status))
+			goto func_cont;
+		/* If processor is in error state then don't attempt
+		   to send the message */
+		if (proc_state.proc_state == PROC_ERROR) {
+			status = -EPERM;
+			goto func_cont;
+		}
+
+		status = disp_node_change_priority(hnode_mgr->disp_obj, hnode,
+			hnode_mgr->ul_fxn_addrs[RMSCHANGENODEPRIORITY],
+			hnode->node_env, NODE_SUSPENDEDPRI);
+
+		/* Update state */
+		if (DSP_SUCCEEDED(status))
+			NODE_SET_STATE(hnode, NODE_PAUSED);
+
+func_cont:
+		/* End of sync_enter_cs */
+		/* Leave critical section */
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+		if (DSP_SUCCEEDED(status)) {
+			proc_notify_clients(hnode->hprocessor,
+					    DSP_NODESTATECHANGE);
+			ntfy_notify(hnode->ntfy_obj, DSP_NODESTATECHANGE);
+		}
+	}
+func_end:
+	dev_dbg(bridge, "%s: hnode: %p status 0x%x\n", __func__, hnode, status);
+	return status;
+}
+
+/*
+ *  ======== node_put_message ========
+ *  Purpose:
+ *      Send a message to a message node, task node, or XDAIS socket node. This
+ *      function will block until the message stream can accommodate the
+ *      message, or a timeout occurs.
+ */
+int node_put_message(struct node_object *hnode,
+			    IN CONST struct dsp_msg *pmsg, u32 utimeout)
+{
+	struct node_mgr *hnode_mgr = NULL;
+	enum node_type node_type;
+	struct bridge_drv_interface *intf_fxns;
+	enum node_state state;
+	int status = 0;
+	void *tmp_buf;
+	struct dsp_msg new_msg;
+	struct dsp_processorstate proc_state;
+	struct proc_object *hprocessor;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pmsg != NULL);
+
+	if (!hnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	hprocessor = hnode->hprocessor;
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in bad state then don't attempt sending the
+	   message */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+	hnode_mgr = hnode->hnode_mgr;
+	node_type = node_get_type(hnode);
+	if (node_type != NODE_MESSAGE && node_type != NODE_TASK &&
+	    node_type != NODE_DAISSOCKET)
+		status = -EPERM;
+
+	if (DSP_SUCCEEDED(status)) {
+		/*  Check node state. Can't send messages to a node after
+		 *  we've sent the RMS_EXIT command. There is still the
+		 *  possibility that node_terminate can be called after we've
+		 *  checked the state. Could add another SYNC object to
+		 *  prevent this (can't use node_mgr_lock, since we don't
+		 *  want to block other NODE functions). However, the node may
+		 *  still exit on its own, before this message is sent. */
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+		state = node_get_state(hnode);
+		if (state == NODE_TERMINATING || state == NODE_DONE)
+			status = -EBADR;
+
+		/* end of sync_enter_cs */
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* assign pmsg values to new msg */
+	new_msg = *pmsg;
+	/* Now, check if message contains a SM buffer descriptor */
+	if (pmsg->dw_cmd & DSP_RMSBUFDESC) {
+		/* Translate GPP Va to DSP physical buf Ptr. */
+		tmp_buf = cmm_xlator_translate(hnode->xlator,
+					       (void *)new_msg.dw_arg1,
+					       CMM_VA2DSPPA);
+		if (tmp_buf != NULL) {
+			/* got translation, convert to MAUs in msg */
+			if (hnode->hnode_mgr->udsp_word_size != 0) {
+				new_msg.dw_arg1 =
+				    (u32) tmp_buf /
+				    hnode->hnode_mgr->udsp_word_size;
+				/* MAUs */
+				new_msg.dw_arg2 /= hnode->hnode_mgr->
+				    udsp_word_size;
+			} else {
+				pr_err("%s: udsp_word_size is zero!\n",
+				       __func__);
+				status = -EPERM;	/* bad DSPWordSize */
+			}
+		} else {	/* failed to translate buffer address */
+			status = -ESRCH;
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		intf_fxns = hnode_mgr->intf_fxns;
+		status = (*intf_fxns->pfn_msg_put) (hnode->msg_queue_obj,
+						    &new_msg, utimeout);
+	}
+func_end:
+	dev_dbg(bridge, "%s: hnode: %p pmsg: %p utimeout: 0x%x, "
+		"status 0x%x\n", __func__, hnode, pmsg, utimeout, status);
+	return status;
+}
+
+/*
+ *  ======== node_register_notify ========
+ *  Purpose:
+ *      Register to be notified on specific events for this node.
+ */
+int node_register_notify(struct node_object *hnode, u32 event_mask,
+				u32 notify_type,
+				struct dsp_notification *hnotification)
+{
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hnotification != NULL);
+
+	if (!hnode) {
+		status = -EFAULT;
+	} else {
+		/* Check if event mask is a valid node related event */
+		if (event_mask & ~(DSP_NODESTATECHANGE | DSP_NODEMESSAGEREADY))
+			status = -EINVAL;
+
+		/* Check if notify type is valid */
+		if (notify_type != DSP_SIGNALEVENT)
+			status = -EINVAL;
+
+		/* Only one Notification can be registered at a
+		 * time - Limitation */
+		if (event_mask == (DSP_NODESTATECHANGE | DSP_NODEMESSAGEREADY))
+			status = -EINVAL;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		if (event_mask == DSP_NODESTATECHANGE) {
+			status = ntfy_register(hnode->ntfy_obj, hnotification,
+					       event_mask & DSP_NODESTATECHANGE,
+					       notify_type);
+		} else {
+			/* Send Message part of event mask to msg_ctrl */
+			intf_fxns = hnode->hnode_mgr->intf_fxns;
+			status = (*intf_fxns->pfn_msg_register_notify)
+			    (hnode->msg_queue_obj,
+			     event_mask & DSP_NODEMESSAGEREADY, notify_type,
+			     hnotification);
+		}
+
+	}
+	dev_dbg(bridge, "%s: hnode: %p event_mask: 0x%x notify_type: 0x%x "
+		"hnotification: %p status 0x%x\n", __func__, hnode,
+		event_mask, notify_type, hnotification, status);
+	return status;
+}
+
+/*
+ *  ======== node_run ========
+ *  Purpose:
+ *      Start execution of a node's execute phase, or resume execution of a node
+ *      that has been suspended (via NODE_NodePause()) on the DSP. Load the
+ *      node's execute function if necessary.
+ */
+int node_run(struct node_object *hnode)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	struct node_mgr *hnode_mgr;
+	enum node_type node_type;
+	enum node_state state;
+	u32 ul_execute_fxn;
+	u32 ul_fxn_addr;
+	int status = 0;
+	u32 proc_id;
+	struct bridge_drv_interface *intf_fxns;
+	struct dsp_processorstate proc_state;
+	struct proc_object *hprocessor;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hnode) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	hprocessor = hnode->hprocessor;
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in error state then don't attempt to run the node */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+	node_type = node_get_type(hnode);
+	if (node_type == NODE_DEVICE)
+		status = -EPERM;
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	hnode_mgr = hnode->hnode_mgr;
+	if (!hnode_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	intf_fxns = hnode_mgr->intf_fxns;
+	/* Enter critical section */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	state = node_get_state(hnode);
+	if (state != NODE_CREATED && state != NODE_PAUSED)
+		status = -EBADR;
+
+	if (DSP_SUCCEEDED(status))
+		status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+
+	if (DSP_FAILED(status))
+		goto func_cont1;
+
+	if ((proc_id != DSP_UNIT) && (proc_id != IVA_UNIT))
+		goto func_cont1;
+
+	if (state == NODE_CREATED) {
+		/* If node's execute function is not loaded, load it */
+		if (!(hnode->loaded) && hnode->phase_split) {
+			status =
+			    hnode_mgr->nldr_fxns.pfn_load(hnode->nldr_node_obj,
+							  NLDR_EXECUTE);
+			if (DSP_SUCCEEDED(status)) {
+				hnode->loaded = true;
+			} else {
+				pr_err("%s: fail - load execute code: 0x%x\n",
+				       __func__, status);
+			}
+		}
+		if (DSP_SUCCEEDED(status)) {
+			/* Get address of node's execute function */
+			if (proc_id == IVA_UNIT)
+				ul_execute_fxn = (u32) hnode->node_env;
+			else {
+				status = get_fxn_address(hnode, &ul_execute_fxn,
+							 EXECUTEPHASE);
+			}
+		}
+		if (DSP_SUCCEEDED(status)) {
+			ul_fxn_addr = hnode_mgr->ul_fxn_addrs[RMSEXECUTENODE];
+			status =
+			    disp_node_run(hnode_mgr->disp_obj, hnode,
+					  ul_fxn_addr, ul_execute_fxn,
+					  hnode->node_env);
+		}
+	} else if (state == NODE_PAUSED) {
+		ul_fxn_addr = hnode_mgr->ul_fxn_addrs[RMSCHANGENODEPRIORITY];
+		status = disp_node_change_priority(hnode_mgr->disp_obj, hnode,
+						   ul_fxn_addr, hnode->node_env,
+						   NODE_GET_PRIORITY(hnode));
+	} else {
+		/* We should never get here */
+		DBC_ASSERT(false);
+	}
+func_cont1:
+	/* Update node state. */
+	if (DSP_SUCCEEDED(status))
+		NODE_SET_STATE(hnode, NODE_RUNNING);
+	else			/* Set state back to previous value */
+		NODE_SET_STATE(hnode, state);
+	/*End of sync_enter_cs */
+	/* Exit critical section */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+	if (DSP_SUCCEEDED(status)) {
+		proc_notify_clients(hnode->hprocessor, DSP_NODESTATECHANGE);
+		ntfy_notify(hnode->ntfy_obj, DSP_NODESTATECHANGE);
+	}
+func_end:
+	dev_dbg(bridge, "%s: hnode: %p status 0x%x\n", __func__, hnode, status);
+	return status;
+}
+
+/*
+ *  ======== node_terminate ========
+ *  Purpose:
+ *      Signal a node running on the DSP that it should exit its execute phase
+ *      function.
+ */
+int node_terminate(struct node_object *hnode, OUT int *pstatus)
+{
+	struct node_object *pnode = (struct node_object *)hnode;
+	struct node_mgr *hnode_mgr = NULL;
+	enum node_type node_type;
+	struct bridge_drv_interface *intf_fxns;
+	enum node_state state;
+	struct dsp_msg msg, killmsg;
+	int status = 0;
+	u32 proc_id, kill_time_out;
+	struct deh_mgr *hdeh_mgr;
+	struct dsp_processorstate proc_state;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pstatus != NULL);
+
+	if (!hnode || !hnode->hnode_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	if (pnode->hprocessor == NULL) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	status = proc_get_processor_id(pnode->hprocessor, &proc_id);
+
+	if (DSP_SUCCEEDED(status)) {
+		hnode_mgr = hnode->hnode_mgr;
+		node_type = node_get_type(hnode);
+		if (node_type != NODE_TASK && node_type != NODE_DAISSOCKET)
+			status = -EPERM;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Check node state */
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+		state = node_get_state(hnode);
+		if (state != NODE_RUNNING) {
+			status = -EBADR;
+			/* Set the exit status if node terminated on
+			 * its own. */
+			if (state == NODE_DONE)
+				*pstatus = hnode->exit_status;
+
+		} else {
+			NODE_SET_STATE(hnode, NODE_TERMINATING);
+		}
+		/* end of sync_enter_cs */
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/*
+		 *  Send exit message. Do not change state to NODE_DONE
+		 *  here. That will be done in callback.
+		 */
+		status = proc_get_state(pnode->hprocessor, &proc_state,
+					sizeof(struct dsp_processorstate));
+		if (DSP_FAILED(status))
+			goto func_cont;
+		/* If processor is in error state then don't attempt to send
+		 * A kill task command */
+		if (proc_state.proc_state == PROC_ERROR) {
+			status = -EPERM;
+			goto func_cont;
+		}
+
+		msg.dw_cmd = RMS_EXIT;
+		msg.dw_arg1 = hnode->node_env;
+		killmsg.dw_cmd = RMS_KILLTASK;
+		killmsg.dw_arg1 = hnode->node_env;
+		intf_fxns = hnode_mgr->intf_fxns;
+
+		if (hnode->utimeout > MAXTIMEOUT)
+			kill_time_out = MAXTIMEOUT;
+		else
+			kill_time_out = (hnode->utimeout) * 2;
+
+		status = (*intf_fxns->pfn_msg_put) (hnode->msg_queue_obj, &msg,
+						    hnode->utimeout);
+		if (DSP_FAILED(status))
+			goto func_cont;
+
+		/*
+		 * Wait on synchronization object that will be
+		 * posted in the callback on receiving RMS_EXIT
+		 * message, or by node_delete. Check for valid hnode,
+		 * in case posted by node_delete().
+		 */
+		status = sync_wait_on_event(hnode->sync_done,
+					    kill_time_out / 2);
+		if (status != ETIME)
+			goto func_cont;
+
+		status = (*intf_fxns->pfn_msg_put)(hnode->msg_queue_obj,
+						&killmsg, hnode->utimeout);
+		if (DSP_FAILED(status))
+			goto func_cont;
+		status = sync_wait_on_event(hnode->sync_done,
+					     kill_time_out / 2);
+		if (DSP_FAILED(status)) {
+			/*
+			 * Here it goes the part of the simulation of
+			 * the DSP exception.
+			 */
+			dev_get_deh_mgr(hnode_mgr->hdev_obj, &hdeh_mgr);
+			if (!hdeh_mgr)
+				goto func_cont;
+
+			(*intf_fxns->pfn_deh_notify)(hdeh_mgr, DSP_SYSERROR,
+							DSP_EXCEPTIONABORT);
+		}
+	}
+func_cont:
+	if (DSP_SUCCEEDED(status)) {
+		/* Enter CS before getting exit status, in case node was
+		 * deleted. */
+		mutex_lock(&hnode_mgr->node_mgr_lock);
+		/* Make sure node wasn't deleted while we blocked */
+		if (!hnode) {
+			status = -EPERM;
+		} else {
+			*pstatus = hnode->exit_status;
+			dev_dbg(bridge, "%s: hnode: %p env 0x%x status 0x%x\n",
+				__func__, hnode, hnode->node_env, status);
+		}
+		mutex_unlock(&hnode_mgr->node_mgr_lock);
+	}			/*End of sync_enter_cs */
+func_end:
+	return status;
+}
+
+/*
+ *  ======== delete_node ========
+ *  Purpose:
+ *      Free GPP resources allocated in node_allocate() or node_connect().
+ */
+static void delete_node(struct node_object *hnode,
+			struct process_context *pr_ctxt)
+{
+	struct node_mgr *hnode_mgr;
+	struct cmm_xlatorobject *xlator;
+	struct bridge_drv_interface *intf_fxns;
+	u32 i;
+	enum node_type node_type;
+	struct stream_chnl stream;
+	struct node_msgargs node_msg_args;
+	struct node_taskargs task_arg_obj;
+#ifdef DSP_DMM_DEBUG
+	struct dmm_object *dmm_mgr;
+	struct proc_object *p_proc_object =
+	    (struct proc_object *)hnode->hprocessor;
+#endif
+	int status;
+	if (!hnode)
+		goto func_end;
+	hnode_mgr = hnode->hnode_mgr;
+	if (!hnode_mgr)
+		goto func_end;
+	xlator = hnode->xlator;
+	node_type = node_get_type(hnode);
+	if (node_type != NODE_DEVICE) {
+		node_msg_args = hnode->create_args.asa.node_msg_args;
+		kfree(node_msg_args.pdata);
+
+		/* Free msg_ctrl queue */
+		if (hnode->msg_queue_obj) {
+			intf_fxns = hnode_mgr->intf_fxns;
+			(*intf_fxns->pfn_msg_delete_queue) (hnode->
+							    msg_queue_obj);
+			hnode->msg_queue_obj = NULL;
+		}
+
+		kfree(hnode->sync_done);
+
+		/* Free all stream info */
+		if (hnode->inputs) {
+			for (i = 0; i < MAX_INPUTS(hnode); i++) {
+				stream = hnode->inputs[i];
+				free_stream(hnode_mgr, stream);
+			}
+			kfree(hnode->inputs);
+			hnode->inputs = NULL;
+		}
+		if (hnode->outputs) {
+			for (i = 0; i < MAX_OUTPUTS(hnode); i++) {
+				stream = hnode->outputs[i];
+				free_stream(hnode_mgr, stream);
+			}
+			kfree(hnode->outputs);
+			hnode->outputs = NULL;
+		}
+		task_arg_obj = hnode->create_args.asa.task_arg_obj;
+		if (task_arg_obj.strm_in_def) {
+			for (i = 0; i < MAX_INPUTS(hnode); i++) {
+				kfree(task_arg_obj.strm_in_def[i].sz_device);
+				task_arg_obj.strm_in_def[i].sz_device = NULL;
+			}
+			kfree(task_arg_obj.strm_in_def);
+			task_arg_obj.strm_in_def = NULL;
+		}
+		if (task_arg_obj.strm_out_def) {
+			for (i = 0; i < MAX_OUTPUTS(hnode); i++) {
+				kfree(task_arg_obj.strm_out_def[i].sz_device);
+				task_arg_obj.strm_out_def[i].sz_device = NULL;
+			}
+			kfree(task_arg_obj.strm_out_def);
+			task_arg_obj.strm_out_def = NULL;
+		}
+		if (task_arg_obj.udsp_heap_res_addr) {
+			status = proc_un_map(hnode->hprocessor, (void *)
+					     task_arg_obj.udsp_heap_addr,
+					     pr_ctxt);
+
+			status = proc_un_reserve_memory(hnode->hprocessor,
+							(void *)
+							task_arg_obj.
+							udsp_heap_res_addr,
+							pr_ctxt);
+#ifdef DSP_DMM_DEBUG
+			status = dmm_get_handle(p_proc_object, &dmm_mgr);
+			if (dmm_mgr)
+				dmm_mem_map_dump(dmm_mgr);
+			else
+				status = DSP_EHANDLE;
+#endif
+		}
+	}
+	if (node_type != NODE_MESSAGE) {
+		kfree(hnode->stream_connect);
+		hnode->stream_connect = NULL;
+	}
+	kfree(hnode->pstr_dev_name);
+	hnode->pstr_dev_name = NULL;
+
+	if (hnode->ntfy_obj) {
+		ntfy_delete(hnode->ntfy_obj);
+		kfree(hnode->ntfy_obj);
+		hnode->ntfy_obj = NULL;
+	}
+
+	/* These were allocated in dcd_get_object_def (via node_allocate) */
+	kfree(hnode->dcd_props.obj_data.node_obj.pstr_create_phase_fxn);
+	hnode->dcd_props.obj_data.node_obj.pstr_create_phase_fxn = NULL;
+
+	kfree(hnode->dcd_props.obj_data.node_obj.pstr_execute_phase_fxn);
+	hnode->dcd_props.obj_data.node_obj.pstr_execute_phase_fxn = NULL;
+
+	kfree(hnode->dcd_props.obj_data.node_obj.pstr_delete_phase_fxn);
+	hnode->dcd_props.obj_data.node_obj.pstr_delete_phase_fxn = NULL;
+
+	kfree(hnode->dcd_props.obj_data.node_obj.pstr_i_alg_name);
+	hnode->dcd_props.obj_data.node_obj.pstr_i_alg_name = NULL;
+
+	/* Free all SM address translator resources */
+	if (xlator) {
+		(void)cmm_xlator_delete(xlator, TRUE);	/* force free */
+		xlator = NULL;
+	}
+
+	kfree(hnode->nldr_node_obj);
+	hnode->nldr_node_obj = NULL;
+	hnode->hnode_mgr = NULL;
+	kfree(hnode);
+	hnode = NULL;
+func_end:
+	return;
+}
+
+/*
+ *  ======== delete_node_mgr ========
+ *  Purpose:
+ *      Frees the node manager.
+ */
+static void delete_node_mgr(struct node_mgr *hnode_mgr)
+{
+	struct node_object *hnode;
+
+	if (hnode_mgr) {
+		/* Free resources */
+		if (hnode_mgr->hdcd_mgr)
+			dcd_destroy_manager(hnode_mgr->hdcd_mgr);
+
+		/* Remove any elements remaining in lists */
+		if (hnode_mgr->node_list) {
+			while ((hnode = (struct node_object *)
+				lst_get_head(hnode_mgr->node_list)))
+				delete_node(hnode, NULL);
+
+			DBC_ASSERT(LST_IS_EMPTY(hnode_mgr->node_list));
+			kfree(hnode_mgr->node_list);
+		}
+		mutex_destroy(&hnode_mgr->node_mgr_lock);
+		if (hnode_mgr->ntfy_obj) {
+			ntfy_delete(hnode_mgr->ntfy_obj);
+			kfree(hnode_mgr->ntfy_obj);
+		}
+
+		if (hnode_mgr->pipe_map)
+			gb_delete(hnode_mgr->pipe_map);
+
+		if (hnode_mgr->pipe_done_map)
+			gb_delete(hnode_mgr->pipe_done_map);
+
+		if (hnode_mgr->chnl_map)
+			gb_delete(hnode_mgr->chnl_map);
+
+		if (hnode_mgr->dma_chnl_map)
+			gb_delete(hnode_mgr->dma_chnl_map);
+
+		if (hnode_mgr->zc_chnl_map)
+			gb_delete(hnode_mgr->zc_chnl_map);
+
+		if (hnode_mgr->disp_obj)
+			disp_delete(hnode_mgr->disp_obj);
+
+		if (hnode_mgr->strm_mgr_obj)
+			strm_delete(hnode_mgr->strm_mgr_obj);
+
+		/* Delete the loader */
+		if (hnode_mgr->nldr_obj)
+			hnode_mgr->nldr_fxns.pfn_delete(hnode_mgr->nldr_obj);
+
+		if (hnode_mgr->loader_init)
+			hnode_mgr->nldr_fxns.pfn_exit();
+
+		kfree(hnode_mgr);
+	}
+}
+
+/*
+ *  ======== fill_stream_connect ========
+ *  Purpose:
+ *      Fills stream information.
+ */
+static void fill_stream_connect(struct node_object *hNode1,
+				struct node_object *hNode2,
+				u32 uStream1, u32 uStream2)
+{
+	u32 strm_index;
+	struct dsp_streamconnect *strm1 = NULL;
+	struct dsp_streamconnect *strm2 = NULL;
+	enum node_type node1_type = NODE_TASK;
+	enum node_type node2_type = NODE_TASK;
+
+	node1_type = node_get_type(hNode1);
+	node2_type = node_get_type(hNode2);
+	if (hNode1 != (struct node_object *)DSP_HGPPNODE) {
+
+		if (node1_type != NODE_DEVICE) {
+			strm_index = hNode1->num_inputs +
+			    hNode1->num_outputs - 1;
+			strm1 = &(hNode1->stream_connect[strm_index]);
+			strm1->cb_struct = sizeof(struct dsp_streamconnect);
+			strm1->this_node_stream_index = uStream1;
+		}
+
+		if (hNode2 != (struct node_object *)DSP_HGPPNODE) {
+			/* NODE == > NODE */
+			if (node1_type != NODE_DEVICE) {
+				strm1->connected_node = hNode2;
+				strm1->ui_connected_node_id = hNode2->node_uuid;
+				strm1->connected_node_stream_index = uStream2;
+				strm1->connect_type = CONNECTTYPE_NODEOUTPUT;
+			}
+			if (node2_type != NODE_DEVICE) {
+				strm_index = hNode2->num_inputs +
+				    hNode2->num_outputs - 1;
+				strm2 = &(hNode2->stream_connect[strm_index]);
+				strm2->cb_struct =
+				    sizeof(struct dsp_streamconnect);
+				strm2->this_node_stream_index = uStream2;
+				strm2->connected_node = hNode1;
+				strm2->ui_connected_node_id = hNode1->node_uuid;
+				strm2->connected_node_stream_index = uStream1;
+				strm2->connect_type = CONNECTTYPE_NODEINPUT;
+			}
+		} else if (node1_type != NODE_DEVICE)
+			strm1->connect_type = CONNECTTYPE_GPPOUTPUT;
+	} else {
+		/* GPP == > NODE */
+		DBC_ASSERT(hNode2 != (struct node_object *)DSP_HGPPNODE);
+		strm_index = hNode2->num_inputs + hNode2->num_outputs - 1;
+		strm2 = &(hNode2->stream_connect[strm_index]);
+		strm2->cb_struct = sizeof(struct dsp_streamconnect);
+		strm2->this_node_stream_index = uStream2;
+		strm2->connect_type = CONNECTTYPE_GPPINPUT;
+	}
+}
+
+/*
+ *  ======== fill_stream_def ========
+ *  Purpose:
+ *      Fills Stream attributes.
+ */
+static void fill_stream_def(struct node_object *hnode,
+			    struct node_strmdef *pstrm_def,
+			    struct dsp_strmattr *pattrs)
+{
+	struct node_mgr *hnode_mgr = hnode->hnode_mgr;
+
+	if (pattrs != NULL) {
+		pstrm_def->num_bufs = pattrs->num_bufs;
+		pstrm_def->buf_size =
+		    pattrs->buf_size / hnode_mgr->udsp_data_mau_size;
+		pstrm_def->seg_id = pattrs->seg_id;
+		pstrm_def->buf_alignment = pattrs->buf_alignment;
+		pstrm_def->utimeout = pattrs->utimeout;
+	} else {
+		pstrm_def->num_bufs = DEFAULTNBUFS;
+		pstrm_def->buf_size =
+		    DEFAULTBUFSIZE / hnode_mgr->udsp_data_mau_size;
+		pstrm_def->seg_id = DEFAULTSEGID;
+		pstrm_def->buf_alignment = DEFAULTALIGNMENT;
+		pstrm_def->utimeout = DEFAULTTIMEOUT;
+	}
+}
+
+/*
+ *  ======== free_stream ========
+ *  Purpose:
+ *      Updates the channel mask and frees the pipe id.
+ */
+static void free_stream(struct node_mgr *hnode_mgr, struct stream_chnl stream)
+{
+	/* Free up the pipe id unless other node has not yet been deleted. */
+	if (stream.type == NODECONNECT) {
+		if (gb_test(hnode_mgr->pipe_done_map, stream.dev_id)) {
+			/* The other node has already been deleted */
+			gb_clear(hnode_mgr->pipe_done_map, stream.dev_id);
+			gb_clear(hnode_mgr->pipe_map, stream.dev_id);
+		} else {
+			/* The other node has not been deleted yet */
+			gb_set(hnode_mgr->pipe_done_map, stream.dev_id);
+		}
+	} else if (stream.type == HOSTCONNECT) {
+		if (stream.dev_id < hnode_mgr->ul_num_chnls) {
+			gb_clear(hnode_mgr->chnl_map, stream.dev_id);
+		} else if (stream.dev_id < (2 * hnode_mgr->ul_num_chnls)) {
+			/* dsp-dma */
+			gb_clear(hnode_mgr->dma_chnl_map, stream.dev_id -
+				 (1 * hnode_mgr->ul_num_chnls));
+		} else if (stream.dev_id < (3 * hnode_mgr->ul_num_chnls)) {
+			/* zero-copy */
+			gb_clear(hnode_mgr->zc_chnl_map, stream.dev_id -
+				 (2 * hnode_mgr->ul_num_chnls));
+		}
+	}
+}
+
+/*
+ *  ======== get_fxn_address ========
+ *  Purpose:
+ *      Retrieves the address for create, execute or delete phase for a node.
+ */
+static int get_fxn_address(struct node_object *hnode, u32 * pulFxnAddr,
+				  u32 uPhase)
+{
+	char *pstr_fxn_name = NULL;
+	struct node_mgr *hnode_mgr = hnode->hnode_mgr;
+	int status = 0;
+	DBC_REQUIRE(node_get_type(hnode) == NODE_TASK ||
+		    node_get_type(hnode) == NODE_DAISSOCKET ||
+		    node_get_type(hnode) == NODE_MESSAGE);
+
+	switch (uPhase) {
+	case CREATEPHASE:
+		pstr_fxn_name =
+		    hnode->dcd_props.obj_data.node_obj.pstr_create_phase_fxn;
+		break;
+	case EXECUTEPHASE:
+		pstr_fxn_name =
+		    hnode->dcd_props.obj_data.node_obj.pstr_execute_phase_fxn;
+		break;
+	case DELETEPHASE:
+		pstr_fxn_name =
+		    hnode->dcd_props.obj_data.node_obj.pstr_delete_phase_fxn;
+		break;
+	default:
+		/* Should never get here */
+		DBC_ASSERT(false);
+		break;
+	}
+
+	status =
+	    hnode_mgr->nldr_fxns.pfn_get_fxn_addr(hnode->nldr_node_obj,
+						  pstr_fxn_name, pulFxnAddr);
+
+	return status;
+}
+
+/*
+ *  ======== get_node_info ========
+ *  Purpose:
+ *      Retrieves the node information.
+ */
+void get_node_info(struct node_object *hnode, struct dsp_nodeinfo *pNodeInfo)
+{
+	u32 i;
+
+	DBC_REQUIRE(hnode);
+	DBC_REQUIRE(pNodeInfo != NULL);
+
+	pNodeInfo->cb_struct = sizeof(struct dsp_nodeinfo);
+	pNodeInfo->nb_node_database_props =
+	    hnode->dcd_props.obj_data.node_obj.ndb_props;
+	pNodeInfo->execution_priority = hnode->prio;
+	pNodeInfo->device_owner = hnode->device_owner;
+	pNodeInfo->number_streams = hnode->num_inputs + hnode->num_outputs;
+	pNodeInfo->node_env = hnode->node_env;
+
+	pNodeInfo->ns_execution_state = node_get_state(hnode);
+
+	/* Copy stream connect data */
+	for (i = 0; i < hnode->num_inputs + hnode->num_outputs; i++)
+		pNodeInfo->sc_stream_connection[i] = hnode->stream_connect[i];
+
+}
+
+/*
+ *  ======== get_node_props ========
+ *  Purpose:
+ *      Retrieve node properties.
+ */
+static int get_node_props(struct dcd_manager *hdcd_mgr,
+				 struct node_object *hnode,
+				 CONST struct dsp_uuid *pNodeId,
+				 struct dcd_genericobj *pdcdProps)
+{
+	u32 len;
+	struct node_msgargs *pmsg_args;
+	struct node_taskargs *task_arg_obj;
+	enum node_type node_type = NODE_TASK;
+	struct dsp_ndbprops *pndb_props =
+	    &(pdcdProps->obj_data.node_obj.ndb_props);
+	int status = 0;
+	char sz_uuid[MAXUUIDLEN];
+
+	status = dcd_get_object_def(hdcd_mgr, (struct dsp_uuid *)pNodeId,
+				    DSP_DCDNODETYPE, pdcdProps);
+
+	if (DSP_SUCCEEDED(status)) {
+		hnode->ntype = node_type = pndb_props->ntype;
+
+		/* Create UUID value to set in registry. */
+		uuid_uuid_to_string((struct dsp_uuid *)pNodeId, sz_uuid,
+				    MAXUUIDLEN);
+		dev_dbg(bridge, "(node) UUID: %s\n", sz_uuid);
+
+		/* Fill in message args that come from NDB */
+		if (node_type != NODE_DEVICE) {
+			pmsg_args = &(hnode->create_args.asa.node_msg_args);
+			pmsg_args->seg_id =
+			    pdcdProps->obj_data.node_obj.msg_segid;
+			pmsg_args->notify_type =
+			    pdcdProps->obj_data.node_obj.msg_notify_type;
+			pmsg_args->max_msgs = pndb_props->message_depth;
+			dev_dbg(bridge, "(node) Max Number of Messages: 0x%x\n",
+				pmsg_args->max_msgs);
+		} else {
+			/* Copy device name */
+			DBC_REQUIRE(pndb_props->ac_name);
+			len = strlen(pndb_props->ac_name);
+			DBC_ASSERT(len < MAXDEVNAMELEN);
+			hnode->pstr_dev_name = kzalloc(len + 1, GFP_KERNEL);
+			if (hnode->pstr_dev_name == NULL) {
+				status = -ENOMEM;
+			} else {
+				strncpy(hnode->pstr_dev_name,
+					pndb_props->ac_name, len);
+			}
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Fill in create args that come from NDB */
+		if (node_type == NODE_TASK || node_type == NODE_DAISSOCKET) {
+			task_arg_obj = &(hnode->create_args.asa.task_arg_obj);
+			task_arg_obj->prio = pndb_props->prio;
+			task_arg_obj->stack_size = pndb_props->stack_size;
+			task_arg_obj->sys_stack_size =
+			    pndb_props->sys_stack_size;
+			task_arg_obj->stack_seg = pndb_props->stack_seg;
+			dev_dbg(bridge, "(node) Priority: 0x%x Stack Size: "
+				"0x%x words System Stack Size: 0x%x words "
+				"Stack Segment: 0x%x profile count : 0x%x\n",
+				task_arg_obj->prio, task_arg_obj->stack_size,
+				task_arg_obj->sys_stack_size,
+				task_arg_obj->stack_seg,
+				pndb_props->count_profiles);
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== get_proc_props ========
+ *  Purpose:
+ *      Retrieve the processor properties.
+ */
+static int get_proc_props(struct node_mgr *hnode_mgr,
+				 struct dev_object *hdev_obj)
+{
+	struct cfg_hostres *host_res;
+	struct bridge_dev_context *pbridge_context;
+	int status = 0;
+
+	status = dev_get_bridge_context(hdev_obj, &pbridge_context);
+	if (!pbridge_context)
+		status = -EFAULT;
+
+	if (DSP_SUCCEEDED(status)) {
+		host_res = pbridge_context->resources;
+		if (!host_res)
+			return -EPERM;
+		hnode_mgr->ul_chnl_offset = host_res->dw_chnl_offset;
+		hnode_mgr->ul_chnl_buf_size = host_res->dw_chnl_buf_size;
+		hnode_mgr->ul_num_chnls = host_res->dw_num_chnls;
+
+		/*
+		 *  PROC will add an API to get dsp_processorinfo.
+		 *  Fill in default values for now.
+		 */
+		/* TODO -- Instead of hard coding, take from registry */
+		hnode_mgr->proc_family = 6000;
+		hnode_mgr->proc_type = 6410;
+		hnode_mgr->min_pri = DSP_NODE_MIN_PRIORITY;
+		hnode_mgr->max_pri = DSP_NODE_MAX_PRIORITY;
+		hnode_mgr->udsp_word_size = DSPWORDSIZE;
+		hnode_mgr->udsp_data_mau_size = DSPWORDSIZE;
+		hnode_mgr->udsp_mau_size = 1;
+
+	}
+	return status;
+}
+
+/*
+ *  ======== node_get_uuid_props ========
+ *  Purpose:
+ *      Fetch Node UUID properties from DCD/DOF file.
+ */
+int node_get_uuid_props(void *hprocessor,
+			       IN CONST struct dsp_uuid *pNodeId,
+			       OUT struct dsp_ndbprops *node_props)
+{
+	struct node_mgr *hnode_mgr = NULL;
+	struct dev_object *hdev_obj;
+	int status = 0;
+	struct dcd_nodeprops dcd_node_props;
+	struct dsp_processorstate proc_state;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hprocessor != NULL);
+	DBC_REQUIRE(pNodeId != NULL);
+
+	if (hprocessor == NULL || pNodeId == NULL) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	status = proc_get_state(hprocessor, &proc_state,
+				sizeof(struct dsp_processorstate));
+	if (DSP_FAILED(status))
+		goto func_end;
+	/* If processor is in error state then don't attempt
+	   to send the message */
+	if (proc_state.proc_state == PROC_ERROR) {
+		status = -EPERM;
+		goto func_end;
+	}
+
+	status = proc_get_dev_object(hprocessor, &hdev_obj);
+	if (hdev_obj) {
+		status = dev_get_node_manager(hdev_obj, &hnode_mgr);
+		if (hnode_mgr == NULL) {
+			status = -EFAULT;
+			goto func_end;
+		}
+	}
+
+	/*
+	 * Enter the critical section. This is needed because
+	 * dcd_get_object_def will ultimately end up calling dbll_open/close,
+	 * which needs to be protected in order to not corrupt the zlib manager
+	 * (COD).
+	 */
+	mutex_lock(&hnode_mgr->node_mgr_lock);
+
+	dcd_node_props.pstr_create_phase_fxn = NULL;
+	dcd_node_props.pstr_execute_phase_fxn = NULL;
+	dcd_node_props.pstr_delete_phase_fxn = NULL;
+	dcd_node_props.pstr_i_alg_name = NULL;
+
+	status = dcd_get_object_def(hnode_mgr->hdcd_mgr,
+		(struct dsp_uuid *)pNodeId, DSP_DCDNODETYPE,
+		(struct dcd_genericobj *)&dcd_node_props);
+
+	if (DSP_SUCCEEDED(status)) {
+		*node_props = dcd_node_props.ndb_props;
+		kfree(dcd_node_props.pstr_create_phase_fxn);
+
+		kfree(dcd_node_props.pstr_execute_phase_fxn);
+
+		kfree(dcd_node_props.pstr_delete_phase_fxn);
+
+		kfree(dcd_node_props.pstr_i_alg_name);
+	}
+	/*  Leave the critical section, we're done. */
+	mutex_unlock(&hnode_mgr->node_mgr_lock);
+func_end:
+	return status;
+}
+
+/*
+ *  ======== get_rms_fxns ========
+ *  Purpose:
+ *      Retrieve the RMS functions.
+ */
+static int get_rms_fxns(struct node_mgr *hnode_mgr)
+{
+	s32 i;
+	struct dev_object *dev_obj = hnode_mgr->hdev_obj;
+	int status = 0;
+
+	static char *psz_fxns[NUMRMSFXNS] = {
+		"RMS_queryServer",	/* RMSQUERYSERVER */
+		"RMS_configureServer",	/* RMSCONFIGURESERVER */
+		"RMS_createNode",	/* RMSCREATENODE */
+		"RMS_executeNode",	/* RMSEXECUTENODE */
+		"RMS_deleteNode",	/* RMSDELETENODE */
+		"RMS_changeNodePriority",	/* RMSCHANGENODEPRIORITY */
+		"RMS_readMemory",	/* RMSREADMEMORY */
+		"RMS_writeMemory",	/* RMSWRITEMEMORY */
+		"RMS_copy",	/* RMSCOPY */
+	};
+
+	for (i = 0; i < NUMRMSFXNS; i++) {
+		status = dev_get_symbol(dev_obj, psz_fxns[i],
+					&(hnode_mgr->ul_fxn_addrs[i]));
+		if (DSP_FAILED(status)) {
+			if (status == -ESPIPE) {
+				/*
+				 *  May be loaded dynamically (in the future),
+				 *  but return an error for now.
+				 */
+				dev_dbg(bridge, "%s: RMS function: %s currently"
+					" not loaded\n", __func__, psz_fxns[i]);
+			} else {
+				dev_dbg(bridge, "%s: Symbol not found: %s "
+					"status = 0x%x\n", __func__,
+					psz_fxns[i], status);
+				break;
+			}
+		}
+	}
+
+	return status;
+}
+
+/*
+ *  ======== ovly ========
+ *  Purpose:
+ *      Called during overlay.Sends command to RMS to copy a block of data.
+ */
+static u32 ovly(void *priv_ref, u32 ulDspRunAddr, u32 ulDspLoadAddr,
+		u32 ul_num_bytes, u32 nMemSpace)
+{
+	struct node_object *hnode = (struct node_object *)priv_ref;
+	struct node_mgr *hnode_mgr;
+	u32 ul_bytes = 0;
+	u32 ul_size;
+	u32 ul_timeout;
+	int status = 0;
+	struct bridge_dev_context *hbridge_context;
+	/* Function interface to Bridge driver*/
+	struct bridge_drv_interface *intf_fxns;
+
+	DBC_REQUIRE(hnode);
+
+	hnode_mgr = hnode->hnode_mgr;
+
+	ul_size = ul_num_bytes / hnode_mgr->udsp_word_size;
+	ul_timeout = hnode->utimeout;
+
+	/* Call new MemCopy function */
+	intf_fxns = hnode_mgr->intf_fxns;
+	status = dev_get_bridge_context(hnode_mgr->hdev_obj, &hbridge_context);
+	if (DSP_SUCCEEDED(status)) {
+		status =
+		    (*intf_fxns->pfn_brd_mem_copy) (hbridge_context,
+						ulDspRunAddr, ulDspLoadAddr,
+						ul_num_bytes, (u32) nMemSpace);
+		if (DSP_SUCCEEDED(status))
+			ul_bytes = ul_num_bytes;
+		else
+			pr_debug("%s: failed to copy brd memory, status 0x%x\n",
+				 __func__, status);
+	} else {
+		pr_debug("%s: failed to get Bridge context, status 0x%x\n",
+			 __func__, status);
+	}
+
+	return ul_bytes;
+}
+
+/*
+ *  ======== mem_write ========
+ */
+static u32 mem_write(void *priv_ref, u32 ulDspAddr, void *pbuf,
+		     u32 ul_num_bytes, u32 nMemSpace)
+{
+	struct node_object *hnode = (struct node_object *)priv_ref;
+	struct node_mgr *hnode_mgr;
+	u16 mem_sect_type;
+	u32 ul_timeout;
+	int status = 0;
+	struct bridge_dev_context *hbridge_context;
+	/* Function interface to Bridge driver */
+	struct bridge_drv_interface *intf_fxns;
+
+	DBC_REQUIRE(hnode);
+	DBC_REQUIRE(nMemSpace & DBLL_CODE || nMemSpace & DBLL_DATA);
+
+	hnode_mgr = hnode->hnode_mgr;
+
+	ul_timeout = hnode->utimeout;
+	mem_sect_type = (nMemSpace & DBLL_CODE) ? RMS_CODE : RMS_DATA;
+
+	/* Call new MemWrite function */
+	intf_fxns = hnode_mgr->intf_fxns;
+	status = dev_get_bridge_context(hnode_mgr->hdev_obj, &hbridge_context);
+	status = (*intf_fxns->pfn_brd_mem_write) (hbridge_context, pbuf,
+					ulDspAddr, ul_num_bytes, mem_sect_type);
+
+	return ul_num_bytes;
+}
+
+/*
+ *  ======== node_find_addr ========
+ */
+int node_find_addr(struct node_mgr *node_mgr, u32 sym_addr,
+		u32 offset_range, void *sym_addr_output, char *sym_name)
+{
+	struct node_object *node_obj;
+	int status = -ENOENT;
+	u32 n;
+
+	pr_debug("%s(0x%x, 0x%x, 0x%x, 0x%x,  %s)\n", __func__,
+			(unsigned int) node_mgr,
+			sym_addr, offset_range,
+			(unsigned int) sym_addr_output, sym_name);
+
+	node_obj = (struct node_object *)(node_mgr->node_list->head.next);
+
+	for (n = 0; n < node_mgr->num_nodes; n++) {
+		status = nldr_find_addr(node_obj->nldr_node_obj, sym_addr,
+			offset_range, sym_addr_output, sym_name);
+
+		if (DSP_SUCCEEDED(status))
+			break;
+
+		node_obj = (struct node_object *) (node_obj->list_elem.next);
+	}
+
+	return status;
+}
+

drivers/staging/tidspbridge/rmgr/proc.c

+/*
+ * proc.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Processor interface at the driver level.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* ------------------------------------ Host OS */
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+#include <dspbridge/list.h>
+#include <dspbridge/ntfy.h>
+#include <dspbridge/sync.h>
+/*  ----------------------------------- Bridge Driver */
+#include <dspbridge/dspdefs.h>
+#include <dspbridge/dspdeh.h>
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/cod.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/procpriv.h>
+#include <dspbridge/dmm.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/mgr.h>
+#include <dspbridge/node.h>
+#include <dspbridge/nldr.h>
+#include <dspbridge/rmm.h>
+
+/*  ----------------------------------- Others */
+#include <dspbridge/dbdcd.h>
+#include <dspbridge/msg.h>
+#include <dspbridge/dspioctl.h>
+#include <dspbridge/drv.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/proc.h>
+#include <dspbridge/pwr.h>
+
+#include <dspbridge/resourcecleanup.h>
+/*  ----------------------------------- Defines, Data Structures, Typedefs */
+#define MAXCMDLINELEN       255
+#define PROC_ENVPROCID      "PROC_ID=%d"
+#define MAXPROCIDLEN	(8 + 5)
+#define PROC_DFLT_TIMEOUT   10000	/* Time out in milliseconds */
+#define PWR_TIMEOUT	 500	/* Sleep/wake timout in msec */
+#define EXTEND	      "_EXT_END"	/* Extmem end addr in DSP binary */
+
+#define DSP_CACHE_LINE 128
+
+#define BUFMODE_MASK	(3 << 14)
+
+/* Buffer modes from DSP perspective */
+#define RBUF		0x4000		/* Input buffer */
+#define WBUF		0x8000		/* Output Buffer */
+
+extern struct device *bridge;
+
+/*  ----------------------------------- Globals */
+
+/* The proc_object structure. */
+struct proc_object {
+	struct list_head link;	/* Link to next proc_object */
+	struct dev_object *hdev_obj;	/* Device this PROC represents */
+	u32 process;		/* Process owning this Processor */
+	struct mgr_object *hmgr_obj;	/* Manager Object Handle */
+	u32 attach_count;	/* Processor attach count */
+	u32 processor_id;	/* Processor number */
+	u32 utimeout;		/* Time out count */
+	enum dsp_procstate proc_state;	/* Processor state */
+	u32 ul_unit;		/* DDSP unit number */
+	bool is_already_attached;	/*
+					 * True if the Device below has
+					 * GPP Client attached
+					 */
+	struct ntfy_object *ntfy_obj;	/* Manages  notifications */
+	/* Bridge Context Handle */
+	struct bridge_dev_context *hbridge_context;
+	/* Function interface to Bridge driver */
+	struct bridge_drv_interface *intf_fxns;
+	char *psz_last_coff;
+	struct list_head proc_list;
+};
+
+static u32 refs;
+
+DEFINE_MUTEX(proc_lock);	/* For critical sections */
+
+/*  ----------------------------------- Function Prototypes */
+static int proc_monitor(struct proc_object *hprocessor);
+static s32 get_envp_count(char **envp);
+static char **prepend_envp(char **new_envp, char **envp, s32 envp_elems,
+			   s32 cnew_envp, char *szVar);
+
+/* remember mapping information */
+static struct dmm_map_object *add_mapping_info(struct process_context *pr_ctxt,
+				u32 mpu_addr, u32 dsp_addr, u32 size)
+{
+	struct dmm_map_object *map_obj;
+
+	u32 num_usr_pgs = size / PG_SIZE4K;
+
+	pr_debug("%s: adding map info: mpu_addr 0x%x virt 0x%x size 0x%x\n",
+						__func__, mpu_addr,
+						dsp_addr, size);
+
+	map_obj = kzalloc(sizeof(struct dmm_map_object), GFP_KERNEL);
+	if (!map_obj) {
+		pr_err("%s: kzalloc failed\n", __func__);
+		return NULL;
+	}
+	INIT_LIST_HEAD(&map_obj->link);
+
+	map_obj->pages = kcalloc(num_usr_pgs, sizeof(struct page *),
+							GFP_KERNEL);
+	if (!map_obj->pages) {
+		pr_err("%s: kzalloc failed\n", __func__);
+		kfree(map_obj);
+		return NULL;
+	}
+
+	map_obj->mpu_addr = mpu_addr;
+	map_obj->dsp_addr = dsp_addr;
+	map_obj->size = size;
+	map_obj->num_usr_pgs = num_usr_pgs;
+
+	spin_lock(&pr_ctxt->dmm_map_lock);
+	list_add(&map_obj->link, &pr_ctxt->dmm_map_list);
+	spin_unlock(&pr_ctxt->dmm_map_lock);
+
+	return map_obj;
+}
+
+static int match_exact_map_obj(struct dmm_map_object *map_obj,
+					u32 dsp_addr, u32 size)
+{
+	if (map_obj->dsp_addr == dsp_addr && map_obj->size != size)
+		pr_err("%s: addr match (0x%x), size don't (0x%x != 0x%x)\n",
+				__func__, dsp_addr, map_obj->size, size);
+
+	return map_obj->dsp_addr == dsp_addr &&
+		map_obj->size == size;
+}
+
+static void remove_mapping_information(struct process_context *pr_ctxt,
+						u32 dsp_addr, u32 size)
+{
+	struct dmm_map_object *map_obj;
+
+	pr_debug("%s: looking for virt 0x%x size 0x%x\n", __func__,
+							dsp_addr, size);
+
+	spin_lock(&pr_ctxt->dmm_map_lock);
+	list_for_each_entry(map_obj, &pr_ctxt->dmm_map_list, link) {
+		pr_debug("%s: candidate: mpu_addr 0x%x virt 0x%x size 0x%x\n",
+							__func__,
+							map_obj->mpu_addr,
+							map_obj->dsp_addr,
+							map_obj->size);
+
+		if (match_exact_map_obj(map_obj, dsp_addr, size)) {
+			pr_debug("%s: match, deleting map info\n", __func__);
+			list_del(&map_obj->link);
+			kfree(map_obj->dma_info.sg);
+			kfree(map_obj->pages);
+			kfree(map_obj);
+			goto out;
+		}
+		pr_debug("%s: candidate didn't match\n", __func__);
+	}
+
+	pr_err("%s: failed to find given map info\n", __func__);
+out:
+	spin_unlock(&pr_ctxt->dmm_map_lock);
+}
+
+static int match_containing_map_obj(struct dmm_map_object *map_obj,
+					u32 mpu_addr, u32 size)
+{
+	u32 map_obj_end = map_obj->mpu_addr + map_obj->size;
+
+	return mpu_addr >= map_obj->mpu_addr &&
+		mpu_addr + size <= map_obj_end;
+}
+
+static struct dmm_map_object *find_containing_mapping(
+				struct process_context *pr_ctxt,
+				u32 mpu_addr, u32 size)
+{
+	struct dmm_map_object *map_obj;
+	pr_debug("%s: looking for mpu_addr 0x%x size 0x%x\n", __func__,
+						mpu_addr, size);
+
+	spin_lock(&pr_ctxt->dmm_map_lock);
+	list_for_each_entry(map_obj, &pr_ctxt->dmm_map_list, link) {
+		pr_debug("%s: candidate: mpu_addr 0x%x virt 0x%x size 0x%x\n",
+						__func__,
+						map_obj->mpu_addr,
+						map_obj->dsp_addr,
+						map_obj->size);
+		if (match_containing_map_obj(map_obj, mpu_addr, size)) {
+			pr_debug("%s: match!\n", __func__);
+			goto out;
+		}
+
+		pr_debug("%s: no match!\n", __func__);
+	}
+
+	map_obj = NULL;
+out:
+	spin_unlock(&pr_ctxt->dmm_map_lock);
+	return map_obj;
+}
+
+static int find_first_page_in_cache(struct dmm_map_object *map_obj,
+					unsigned long mpu_addr)
+{
+	u32 mapped_base_page = map_obj->mpu_addr >> PAGE_SHIFT;
+	u32 requested_base_page = mpu_addr >> PAGE_SHIFT;
+	int pg_index = requested_base_page - mapped_base_page;
+
+	if (pg_index < 0 || pg_index >= map_obj->num_usr_pgs) {
+		pr_err("%s: failed (got %d)\n", __func__, pg_index);
+		return -1;
+	}
+
+	pr_debug("%s: first page is %d\n", __func__, pg_index);
+	return pg_index;
+}
+
+static inline struct page *get_mapping_page(struct dmm_map_object *map_obj,
+								int pg_i)
+{
+	pr_debug("%s: looking for pg_i %d, num_usr_pgs: %d\n", __func__,
+					pg_i, map_obj->num_usr_pgs);
+
+	if (pg_i < 0 || pg_i >= map_obj->num_usr_pgs) {
+		pr_err("%s: requested pg_i %d is out of mapped range\n",
+				__func__, pg_i);
+		return NULL;
+	}
+
+	return map_obj->pages[pg_i];
+}
+
+/*
+ *  ======== proc_attach ========
+ *  Purpose:
+ *      Prepare for communication with a particular DSP processor, and return
+ *      a handle to the processor object.
+ */
+int
+proc_attach(u32 processor_id,
+	    OPTIONAL CONST struct dsp_processorattrin *attr_in,
+	    void **ph_processor, struct process_context *pr_ctxt)
+{
+	int status = 0;
+	struct dev_object *hdev_obj;
+	struct proc_object *p_proc_object = NULL;
+	struct mgr_object *hmgr_obj = NULL;
+	struct drv_object *hdrv_obj = NULL;
+	u8 dev_type;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(ph_processor != NULL);
+
+	if (pr_ctxt->hprocessor) {
+		*ph_processor = pr_ctxt->hprocessor;
+		return status;
+	}
+
+	/* Get the Driver and Manager Object Handles */
+	status = cfg_get_object((u32 *) &hdrv_obj, REG_DRV_OBJECT);
+	if (DSP_SUCCEEDED(status))
+		status = cfg_get_object((u32 *) &hmgr_obj, REG_MGR_OBJECT);
+
+	if (DSP_SUCCEEDED(status)) {
+		/* Get the Device Object */
+		status = drv_get_dev_object(processor_id, hdrv_obj, &hdev_obj);
+	}
+	if (DSP_SUCCEEDED(status))
+		status = dev_get_dev_type(hdev_obj, &dev_type);
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* If we made it this far, create the Proceesor object: */
+	p_proc_object = kzalloc(sizeof(struct proc_object), GFP_KERNEL);
+	/* Fill out the Processor Object: */
+	if (p_proc_object == NULL) {
+		status = -ENOMEM;
+		goto func_end;
+	}
+	p_proc_object->hdev_obj = hdev_obj;
+	p_proc_object->hmgr_obj = hmgr_obj;
+	p_proc_object->processor_id = dev_type;
+	/* Store TGID instead of process handle */
+	p_proc_object->process = current->tgid;
+
+	INIT_LIST_HEAD(&p_proc_object->proc_list);
+
+	if (attr_in)
+		p_proc_object->utimeout = attr_in->utimeout;
+	else
+		p_proc_object->utimeout = PROC_DFLT_TIMEOUT;
+
+	status = dev_get_intf_fxns(hdev_obj, &p_proc_object->intf_fxns);
+	if (DSP_SUCCEEDED(status)) {
+		status = dev_get_bridge_context(hdev_obj,
+					     &p_proc_object->hbridge_context);
+		if (DSP_FAILED(status))
+			kfree(p_proc_object);
+	} else
+		kfree(p_proc_object);
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Create the Notification Object */
+	/* This is created with no event mask, no notify mask
+	 * and no valid handle to the notification. They all get
+	 * filled up when proc_register_notify is called */
+	p_proc_object->ntfy_obj = kmalloc(sizeof(struct ntfy_object),
+							GFP_KERNEL);
+	if (p_proc_object->ntfy_obj)
+		ntfy_init(p_proc_object->ntfy_obj);
+	else
+		status = -ENOMEM;
+
+	if (DSP_SUCCEEDED(status)) {
+		/* Insert the Processor Object into the DEV List.
+		 * Return handle to this Processor Object:
+		 * Find out if the Device is already attached to a
+		 * Processor. If so, return AlreadyAttached status */
+		lst_init_elem(&p_proc_object->link);
+		status = dev_insert_proc_object(p_proc_object->hdev_obj,
+						(u32) p_proc_object,
+						&p_proc_object->
+						is_already_attached);
+		if (DSP_SUCCEEDED(status)) {
+			if (p_proc_object->is_already_attached)
+				status = 0;
+		} else {
+			if (p_proc_object->ntfy_obj) {
+				ntfy_delete(p_proc_object->ntfy_obj);
+				kfree(p_proc_object->ntfy_obj);
+			}
+
+			kfree(p_proc_object);
+		}
+		if (DSP_SUCCEEDED(status)) {
+			*ph_processor = (void *)p_proc_object;
+			pr_ctxt->hprocessor = *ph_processor;
+			(void)proc_notify_clients(p_proc_object,
+						  DSP_PROCESSORATTACH);
+		}
+	} else {
+		/* Don't leak memory if DSP_FAILED */
+		kfree(p_proc_object);
+	}
+func_end:
+	DBC_ENSURE((status == -EPERM && *ph_processor == NULL) ||
+		   (DSP_SUCCEEDED(status) && p_proc_object) ||
+		   (status == 0 && p_proc_object));
+
+	return status;
+}
+
+static int get_exec_file(struct cfg_devnode *dev_node_obj,
+				struct dev_object *hdev_obj,
+				u32 size, char *execFile)
+{
+	u8 dev_type;
+	s32 len;
+
+	dev_get_dev_type(hdev_obj, (u8 *) &dev_type);
+	if (dev_type == DSP_UNIT) {
+		return cfg_get_exec_file(dev_node_obj, size, execFile);
+	} else if (dev_type == IVA_UNIT) {
+		if (iva_img) {
+			len = strlen(iva_img);
+			strncpy(execFile, iva_img, len + 1);
+			return 0;
+		}
+	}
+	return -ENOENT;
+}
+
+/*
+ *  ======== proc_auto_start ======== =
+ *  Purpose:
+ *      A Particular device gets loaded with the default image
+ *      if the AutoStart flag is set.
+ *  Parameters:
+ *      hdev_obj:     Handle to the Device
+ *  Returns:
+ *      0:   On Successful Loading
+ *      -EPERM  General Failure
+ *  Requires:
+ *      hdev_obj != NULL
+ *  Ensures:
+ */
+int proc_auto_start(struct cfg_devnode *dev_node_obj,
+			   struct dev_object *hdev_obj)
+{
+	int status = -EPERM;
+	struct proc_object *p_proc_object;
+	char sz_exec_file[MAXCMDLINELEN];
+	char *argv[2];
+	struct mgr_object *hmgr_obj = NULL;
+	u8 dev_type;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(dev_node_obj != NULL);
+	DBC_REQUIRE(hdev_obj != NULL);
+
+	/* Create a Dummy PROC Object */
+	status = cfg_get_object((u32 *) &hmgr_obj, REG_MGR_OBJECT);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	p_proc_object = kzalloc(sizeof(struct proc_object), GFP_KERNEL);
+	if (p_proc_object == NULL) {
+		status = -ENOMEM;
+		goto func_end;
+	}
+	p_proc_object->hdev_obj = hdev_obj;
+	p_proc_object->hmgr_obj = hmgr_obj;
+	status = dev_get_intf_fxns(hdev_obj, &p_proc_object->intf_fxns);
+	if (DSP_SUCCEEDED(status))
+		status = dev_get_bridge_context(hdev_obj,
+					     &p_proc_object->hbridge_context);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	/* Stop the Device, put it into standby mode */
+	status = proc_stop(p_proc_object);
+
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	/* Get the default executable for this board... */
+	dev_get_dev_type(hdev_obj, (u8 *) &dev_type);
+	p_proc_object->processor_id = dev_type;
+	status = get_exec_file(dev_node_obj, hdev_obj, sizeof(sz_exec_file),
+			       sz_exec_file);
+	if (DSP_SUCCEEDED(status)) {
+		argv[0] = sz_exec_file;
+		argv[1] = NULL;
+		/* ...and try to load it: */
+		status = proc_load(p_proc_object, 1, (CONST char **)argv, NULL);
+		if (DSP_SUCCEEDED(status))
+			status = proc_start(p_proc_object);
+	}
+	kfree(p_proc_object->psz_last_coff);
+	p_proc_object->psz_last_coff = NULL;
+func_cont:
+	kfree(p_proc_object);
+func_end:
+	return status;
+}
+
+/*
+ *  ======== proc_ctrl ========
+ *  Purpose:
+ *      Pass control information to the GPP device driver managing the
+ *      DSP processor.
+ *
+ *      This will be an OEM-only function, and not part of the DSP/BIOS Bridge
+ *      application developer's API.
+ *      Call the bridge_dev_ctrl fxn with the Argument. This is a Synchronous
+ *      Operation. arg can be null.
+ */
+int proc_ctrl(void *hprocessor, u32 dw_cmd, IN struct dsp_cbdata * arg)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = hprocessor;
+	u32 timeout = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (p_proc_object) {
+		/* intercept PWR deep sleep command */
+		if (dw_cmd == BRDIOCTL_DEEPSLEEP) {
+			timeout = arg->cb_data;
+			status = pwr_sleep_dsp(PWR_DEEPSLEEP, timeout);
+		}
+		/* intercept PWR emergency sleep command */
+		else if (dw_cmd == BRDIOCTL_EMERGENCYSLEEP) {
+			timeout = arg->cb_data;
+			status = pwr_sleep_dsp(PWR_EMERGENCYDEEPSLEEP, timeout);
+		} else if (dw_cmd == PWR_DEEPSLEEP) {
+			/* timeout = arg->cb_data; */
+			status = pwr_sleep_dsp(PWR_DEEPSLEEP, timeout);
+		}
+		/* intercept PWR wake commands */
+		else if (dw_cmd == BRDIOCTL_WAKEUP) {
+			timeout = arg->cb_data;
+			status = pwr_wake_dsp(timeout);
+		} else if (dw_cmd == PWR_WAKEUP) {
+			/* timeout = arg->cb_data; */
+			status = pwr_wake_dsp(timeout);
+		} else
+		    if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_dev_cntrl)
+				      (p_proc_object->hbridge_context, dw_cmd,
+				       arg))) {
+			status = 0;
+		} else {
+			status = -EPERM;
+		}
+	} else {
+		status = -EFAULT;
+	}
+
+	return status;
+}
+
+/*
+ *  ======== proc_detach ========
+ *  Purpose:
+ *      Destroys the  Processor Object. Removes the notification from the Dev
+ *      List.
+ */
+int proc_detach(struct process_context *pr_ctxt)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = NULL;
+
+	DBC_REQUIRE(refs > 0);
+
+	p_proc_object = (struct proc_object *)pr_ctxt->hprocessor;
+
+	if (p_proc_object) {
+		/* Notify the Client */
+		ntfy_notify(p_proc_object->ntfy_obj, DSP_PROCESSORDETACH);
+		/* Remove the notification memory */
+		if (p_proc_object->ntfy_obj) {
+			ntfy_delete(p_proc_object->ntfy_obj);
+			kfree(p_proc_object->ntfy_obj);
+		}
+
+		kfree(p_proc_object->psz_last_coff);
+		p_proc_object->psz_last_coff = NULL;
+		/* Remove the Proc from the DEV List */
+		(void)dev_remove_proc_object(p_proc_object->hdev_obj,
+					     (u32) p_proc_object);
+		/* Free the Processor Object */
+		kfree(p_proc_object);
+		pr_ctxt->hprocessor = NULL;
+	} else {
+		status = -EFAULT;
+	}
+
+	return status;
+}
+
+/*
+ *  ======== proc_enum_nodes ========
+ *  Purpose:
+ *      Enumerate and get configuration information about nodes allocated
+ *      on a DSP processor.
+ */
+int proc_enum_nodes(void *hprocessor, void **node_tab,
+			   IN u32 node_tab_size, OUT u32 *pu_num_nodes,
+			   OUT u32 *pu_allocated)
+{
+	int status = -EPERM;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct node_mgr *hnode_mgr = NULL;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(node_tab != NULL || node_tab_size == 0);
+	DBC_REQUIRE(pu_num_nodes != NULL);
+	DBC_REQUIRE(pu_allocated != NULL);
+
+	if (p_proc_object) {
+		if (DSP_SUCCEEDED(dev_get_node_manager(p_proc_object->hdev_obj,
+						       &hnode_mgr))) {
+			if (hnode_mgr) {
+				status = node_enum_nodes(hnode_mgr, node_tab,
+							 node_tab_size,
+							 pu_num_nodes,
+							 pu_allocated);
+			}
+		}
+	} else {
+		status = -EFAULT;
+	}
+
+	return status;
+}
+
+/* Cache operation against kernel address instead of users */
+static int build_dma_sg(struct dmm_map_object *map_obj, unsigned long start,
+						ssize_t len, int pg_i)
+{
+	struct page *page;
+	unsigned long offset;
+	ssize_t rest;
+	int ret = 0, i = 0;
+	struct scatterlist *sg = map_obj->dma_info.sg;
+
+	while (len) {
+		page = get_mapping_page(map_obj, pg_i);
+		if (!page) {
+			pr_err("%s: no page for %08lx\n", __func__, start);
+			ret = -EINVAL;
+			goto out;
+		} else if (IS_ERR(page)) {
+			pr_err("%s: err page for %08lx(%lu)\n", __func__, start,
+			       PTR_ERR(page));
+			ret = PTR_ERR(page);
+			goto out;
+		}
+
+		offset = start & ~PAGE_MASK;
+		rest = min_t(ssize_t, PAGE_SIZE - offset, len);
+
+		sg_set_page(&sg[i], page, rest, offset);
+
+		len -= rest;
+		start += rest;
+		pg_i++, i++;
+	}
+
+	if (i != map_obj->dma_info.num_pages) {
+		pr_err("%s: bad number of sg iterations\n", __func__);
+		ret = -EFAULT;
+		goto out;
+	}
+
+out:
+	return ret;
+}
+
+static int memory_regain_ownership(struct dmm_map_object *map_obj,
+		unsigned long start, ssize_t len, enum dma_data_direction dir)
+{
+	int ret = 0;
+	unsigned long first_data_page = start >> PAGE_SHIFT;
+	unsigned long last_data_page = ((u32)(start + len - 1) >> PAGE_SHIFT);
+	/* calculating the number of pages this area spans */
+	unsigned long num_pages = last_data_page - first_data_page + 1;
+	struct bridge_dma_map_info *dma_info = &map_obj->dma_info;
+
+	if (!dma_info->sg)
+		goto out;
+
+	if (dma_info->dir != dir || dma_info->num_pages != num_pages) {
+		pr_err("%s: dma info doesn't match given params\n", __func__);
+		return -EINVAL;
+	}
+
+	dma_unmap_sg(bridge, dma_info->sg, num_pages, dma_info->dir);
+
+	pr_debug("%s: dma_map_sg unmapped\n", __func__);
+
+	kfree(dma_info->sg);
+
+	map_obj->dma_info.sg = NULL;
+
+out:
+	return ret;
+}
+
+/* Cache operation against kernel address instead of users */
+static int memory_give_ownership(struct dmm_map_object *map_obj,
+		unsigned long start, ssize_t len, enum dma_data_direction dir)
+{
+	int pg_i, ret, sg_num;
+	struct scatterlist *sg;
+	unsigned long first_data_page = start >> PAGE_SHIFT;
+	unsigned long last_data_page = ((u32)(start + len - 1) >> PAGE_SHIFT);
+	/* calculating the number of pages this area spans */
+	unsigned long num_pages = last_data_page - first_data_page + 1;
+
+	pg_i = find_first_page_in_cache(map_obj, start);
+	if (pg_i < 0) {
+		pr_err("%s: failed to find first page in cache\n", __func__);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	sg = kcalloc(num_pages, sizeof(*sg), GFP_KERNEL);
+	if (!sg) {
+		pr_err("%s: kcalloc failed\n", __func__);
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	sg_init_table(sg, num_pages);
+
+	/* cleanup a previous sg allocation */
+	/* this may happen if application doesn't signal for e/o DMA */
+	kfree(map_obj->dma_info.sg);
+
+	map_obj->dma_info.sg = sg;
+	map_obj->dma_info.dir = dir;
+	map_obj->dma_info.num_pages = num_pages;
+
+	ret = build_dma_sg(map_obj, start, len, pg_i);
+	if (ret)
+		goto kfree_sg;
+
+	sg_num = dma_map_sg(bridge, sg, num_pages, dir);
+	if (sg_num < 1) {
+		pr_err("%s: dma_map_sg failed: %d\n", __func__, sg_num);
+		ret = -EFAULT;
+		goto kfree_sg;
+	}
+
+	pr_debug("%s: dma_map_sg mapped %d elements\n", __func__, sg_num);
+	map_obj->dma_info.sg_num = sg_num;
+
+	return 0;
+
+kfree_sg:
+	kfree(sg);
+	map_obj->dma_info.sg = NULL;
+out:
+	return ret;
+}
+
+int proc_begin_dma(void *hprocessor, void *pmpu_addr, u32 ul_size,
+				enum dma_data_direction dir)
+{
+	/* Keep STATUS here for future additions to this function */
+	int status = 0;
+	struct process_context *pr_ctxt = (struct process_context *) hprocessor;
+	struct dmm_map_object *map_obj;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!pr_ctxt) {
+		status = -EFAULT;
+		goto err_out;
+	}
+
+	pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__,
+							(u32)pmpu_addr,
+							ul_size, dir);
+
+	/* find requested memory are in cached mapping information */
+	map_obj = find_containing_mapping(pr_ctxt, (u32) pmpu_addr, ul_size);
+	if (!map_obj) {
+		pr_err("%s: find_containing_mapping failed\n", __func__);
+		status = -EFAULT;
+		goto err_out;
+	}
+
+	if (memory_give_ownership(map_obj, (u32) pmpu_addr, ul_size, dir)) {
+		pr_err("%s: InValid address parameters %p %x\n",
+			       __func__, pmpu_addr, ul_size);
+		status = -EFAULT;
+	}
+
+err_out:
+
+	return status;
+}
+
+int proc_end_dma(void *hprocessor, void *pmpu_addr, u32 ul_size,
+			enum dma_data_direction dir)
+{
+	/* Keep STATUS here for future additions to this function */
+	int status = 0;
+	struct process_context *pr_ctxt = (struct process_context *) hprocessor;
+	struct dmm_map_object *map_obj;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!pr_ctxt) {
+		status = -EFAULT;
+		goto err_out;
+	}
+
+	pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__,
+							(u32)pmpu_addr,
+							ul_size, dir);
+
+	/* find requested memory are in cached mapping information */
+	map_obj = find_containing_mapping(pr_ctxt, (u32) pmpu_addr, ul_size);
+	if (!map_obj) {
+		pr_err("%s: find_containing_mapping failed\n", __func__);
+		status = -EFAULT;
+		goto err_out;
+	}
+
+	if (memory_regain_ownership(map_obj, (u32) pmpu_addr, ul_size, dir)) {
+		pr_err("%s: InValid address parameters %p %x\n",
+		       __func__, pmpu_addr, ul_size);
+		status = -EFAULT;
+		goto err_out;
+	}
+
+err_out:
+	return status;
+}
+
+/*
+ *  ======== proc_flush_memory ========
+ *  Purpose:
+ *     Flush cache
+ */
+int proc_flush_memory(void *hprocessor, void *pmpu_addr,
+			     u32 ul_size, u32 ul_flags)
+{
+	enum dma_data_direction dir = DMA_BIDIRECTIONAL;
+
+	return proc_begin_dma(hprocessor, pmpu_addr, ul_size, dir);
+}
+
+/*
+ *  ======== proc_invalidate_memory ========
+ *  Purpose:
+ *     Invalidates the memory specified
+ */
+int proc_invalidate_memory(void *hprocessor, void *pmpu_addr, u32 size)
+{
+	enum dma_data_direction dir = DMA_FROM_DEVICE;
+
+	return proc_begin_dma(hprocessor, pmpu_addr, size, dir);
+}
+
+/*
+ *  ======== proc_get_resource_info ========
+ *  Purpose:
+ *      Enumerate the resources currently available on a processor.
+ */
+int proc_get_resource_info(void *hprocessor, u32 resource_type,
+				  OUT struct dsp_resourceinfo *resource_info,
+				  u32 resource_info_size)
+{
+	int status = -EPERM;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct node_mgr *hnode_mgr = NULL;
+	struct nldr_object *nldr_obj = NULL;
+	struct rmm_target_obj *rmm = NULL;
+	struct io_mgr *hio_mgr = NULL;	/* IO manager handle */
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(resource_info != NULL);
+	DBC_REQUIRE(resource_info_size >= sizeof(struct dsp_resourceinfo));
+
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	switch (resource_type) {
+	case DSP_RESOURCE_DYNDARAM:
+	case DSP_RESOURCE_DYNSARAM:
+	case DSP_RESOURCE_DYNEXTERNAL:
+	case DSP_RESOURCE_DYNSRAM:
+		status = dev_get_node_manager(p_proc_object->hdev_obj,
+					      &hnode_mgr);
+		if (!hnode_mgr) {
+			status = -EFAULT;
+			goto func_end;
+		}
+
+		status = node_get_nldr_obj(hnode_mgr, &nldr_obj);
+		if (DSP_SUCCEEDED(status)) {
+			status = nldr_get_rmm_manager(nldr_obj, &rmm);
+			if (rmm) {
+				if (!rmm_stat(rmm,
+					      (enum dsp_memtype)resource_type,
+					      (struct dsp_memstat *)
+					      &(resource_info->result.
+						mem_stat)))
+					status = -EINVAL;
+			} else {
+				status = -EFAULT;
+			}
+		}
+		break;
+	case DSP_RESOURCE_PROCLOAD:
+		status = dev_get_io_mgr(p_proc_object->hdev_obj, &hio_mgr);
+		if (hio_mgr)
+			status =
+			    p_proc_object->intf_fxns->
+			    pfn_io_get_proc_load(hio_mgr,
+						 (struct dsp_procloadstat *)
+						 &(resource_info->result.
+						   proc_load_stat));
+		else
+			status = -EFAULT;
+		break;
+	default:
+		status = -EPERM;
+		break;
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== proc_exit ========
+ *  Purpose:
+ *      Decrement reference count, and free resources when reference count is
+ *      0.
+ */
+void proc_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== proc_get_dev_object ========
+ *  Purpose:
+ *      Return the Dev Object handle for a given Processor.
+ *
+ */
+int proc_get_dev_object(void *hprocessor,
+			       struct dev_object **phDevObject)
+{
+	int status = -EPERM;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phDevObject != NULL);
+
+	if (p_proc_object) {
+		*phDevObject = p_proc_object->hdev_obj;
+		status = 0;
+	} else {
+		*phDevObject = NULL;
+		status = -EFAULT;
+	}
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phDevObject != NULL) ||
+		   (DSP_FAILED(status) && *phDevObject == NULL));
+
+	return status;
+}
+
+/*
+ *  ======== proc_get_state ========
+ *  Purpose:
+ *      Report the state of the specified DSP processor.
+ */
+int proc_get_state(void *hprocessor,
+			  OUT struct dsp_processorstate *proc_state_obj,
+			  u32 state_info_size)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	int brd_status;
+	struct deh_mgr *hdeh_mgr;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(proc_state_obj != NULL);
+	DBC_REQUIRE(state_info_size >= sizeof(struct dsp_processorstate));
+
+	if (p_proc_object) {
+		/* First, retrieve BRD state information */
+		status = (*p_proc_object->intf_fxns->pfn_brd_status)
+		    (p_proc_object->hbridge_context, &brd_status);
+		if (DSP_SUCCEEDED(status)) {
+			switch (brd_status) {
+			case BRD_STOPPED:
+				proc_state_obj->proc_state = PROC_STOPPED;
+				break;
+			case BRD_SLEEP_TRANSITION:
+			case BRD_DSP_HIBERNATION:
+				/* Fall through */
+			case BRD_RUNNING:
+				proc_state_obj->proc_state = PROC_RUNNING;
+				break;
+			case BRD_LOADED:
+				proc_state_obj->proc_state = PROC_LOADED;
+				break;
+			case BRD_ERROR:
+				proc_state_obj->proc_state = PROC_ERROR;
+				break;
+			default:
+				proc_state_obj->proc_state = 0xFF;
+				status = -EPERM;
+				break;
+			}
+		}
+		/* Next, retrieve error information, if any */
+		status = dev_get_deh_mgr(p_proc_object->hdev_obj, &hdeh_mgr);
+		if (DSP_SUCCEEDED(status) && hdeh_mgr)
+			status = (*p_proc_object->intf_fxns->pfn_deh_get_info)
+			    (hdeh_mgr, &(proc_state_obj->err_info));
+	} else {
+		status = -EFAULT;
+	}
+	dev_dbg(bridge, "%s, results: status: 0x%x proc_state_obj: 0x%x\n",
+		__func__, status, proc_state_obj->proc_state);
+	return status;
+}
+
+/*
+ *  ======== proc_get_trace ========
+ *  Purpose:
+ *      Retrieve the current contents of the trace buffer, located on the
+ *      Processor.  Predefined symbols for the trace buffer must have been
+ *      configured into the DSP executable.
+ *  Details:
+ *      We support using the symbols SYS_PUTCBEG and SYS_PUTCEND to define a
+ *      trace buffer, only.  Treat it as an undocumented feature.
+ *      This call is destructive, meaning the processor is placed in the monitor
+ *      state as a result of this function.
+ */
+int proc_get_trace(void *hprocessor, u8 * pbuf, u32 max_size)
+{
+	int status;
+	status = -ENOSYS;
+	return status;
+}
+
+/*
+ *  ======== proc_init ========
+ *  Purpose:
+ *      Initialize PROC's private state, keeping a reference count on each call
+ */
+bool proc_init(void)
+{
+	bool ret = true;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
+
+	return ret;
+}
+
+/*
+ *  ======== proc_load ========
+ *  Purpose:
+ *      Reset a processor and load a new base program image.
+ *      This will be an OEM-only function, and not part of the DSP/BIOS Bridge
+ *      application developer's API.
+ */
+int proc_load(void *hprocessor, IN CONST s32 argc_index,
+		     IN CONST char **user_args, IN CONST char **user_envp)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct io_mgr *hio_mgr;	/* IO manager handle */
+	struct msg_mgr *hmsg_mgr;
+	struct cod_manager *cod_mgr;	/* Code manager handle */
+	char *pargv0;		/* temp argv[0] ptr */
+	char **new_envp;	/* Updated envp[] array. */
+	char sz_proc_id[MAXPROCIDLEN];	/* Size of "PROC_ID=<n>" */
+	s32 envp_elems;		/* Num elements in envp[]. */
+	s32 cnew_envp;		/* "  " in new_envp[] */
+	s32 nproc_id = 0;	/* Anticipate MP version. */
+	struct dcd_manager *hdcd_handle;
+	struct dmm_object *dmm_mgr;
+	u32 dw_ext_end;
+	u32 proc_id;
+	int brd_state;
+	struct drv_data *drv_datap = dev_get_drvdata(bridge);
+
+#ifdef OPT_LOAD_TIME_INSTRUMENTATION
+	struct timeval tv1;
+	struct timeval tv2;
+#endif
+
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+	struct dspbridge_platform_data *pdata =
+	    omap_dspbridge_dev->dev.platform_data;
+#endif
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(argc_index > 0);
+	DBC_REQUIRE(user_args != NULL);
+
+#ifdef OPT_LOAD_TIME_INSTRUMENTATION
+	do_gettimeofday(&tv1);
+#endif
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	dev_get_cod_mgr(p_proc_object->hdev_obj, &cod_mgr);
+	if (!cod_mgr) {
+		status = -EPERM;
+		goto func_end;
+	}
+	status = proc_stop(hprocessor);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Place the board in the monitor state. */
+	status = proc_monitor(hprocessor);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Save ptr to  original argv[0]. */
+	pargv0 = (char *)user_args[0];
+	/*Prepend "PROC_ID=<nproc_id>"to envp array for target. */
+	envp_elems = get_envp_count((char **)user_envp);
+	cnew_envp = (envp_elems ? (envp_elems + 1) : (envp_elems + 2));
+	new_envp = kzalloc(cnew_envp * sizeof(char **), GFP_KERNEL);
+	if (new_envp) {
+		status = snprintf(sz_proc_id, MAXPROCIDLEN, PROC_ENVPROCID,
+				  nproc_id);
+		if (status == -1) {
+			dev_dbg(bridge, "%s: Proc ID string overflow\n",
+				__func__);
+			status = -EPERM;
+		} else {
+			new_envp =
+			    prepend_envp(new_envp, (char **)user_envp,
+					 envp_elems, cnew_envp, sz_proc_id);
+			/* Get the DCD Handle */
+			status = mgr_get_dcd_handle(p_proc_object->hmgr_obj,
+						    (u32 *) &hdcd_handle);
+			if (DSP_SUCCEEDED(status)) {
+				/*  Before proceeding with new load,
+				 *  check if a previously registered COFF
+				 *  exists.
+				 *  If yes, unregister nodes in previously
+				 *  registered COFF.  If any error occurred,
+				 *  set previously registered COFF to NULL. */
+				if (p_proc_object->psz_last_coff != NULL) {
+					status =
+					    dcd_auto_unregister(hdcd_handle,
+								p_proc_object->
+								psz_last_coff);
+					/* Regardless of auto unregister status,
+					 *  free previously allocated
+					 *  memory. */
+					kfree(p_proc_object->psz_last_coff);
+					p_proc_object->psz_last_coff = NULL;
+				}
+			}
+			/* On success, do cod_open_base() */
+			status = cod_open_base(cod_mgr, (char *)user_args[0],
+					       COD_SYMB);
+		}
+	} else {
+		status = -ENOMEM;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Auto-register data base */
+		/* Get the DCD Handle */
+		status = mgr_get_dcd_handle(p_proc_object->hmgr_obj,
+					    (u32 *) &hdcd_handle);
+		if (DSP_SUCCEEDED(status)) {
+			/*  Auto register nodes in specified COFF
+			 *  file.  If registration did not fail,
+			 *  (status = 0 or -EACCES)
+			 *  save the name of the COFF file for
+			 *  de-registration in the future. */
+			status =
+			    dcd_auto_register(hdcd_handle,
+					      (char *)user_args[0]);
+			if (status == -EACCES)
+				status = 0;
+
+			if (DSP_FAILED(status)) {
+				status = -EPERM;
+			} else {
+				DBC_ASSERT(p_proc_object->psz_last_coff ==
+					   NULL);
+				/* Allocate memory for pszLastCoff */
+				p_proc_object->psz_last_coff =
+						kzalloc((strlen(user_args[0]) +
+						1), GFP_KERNEL);
+				/* If memory allocated, save COFF file name */
+				if (p_proc_object->psz_last_coff) {
+					strncpy(p_proc_object->psz_last_coff,
+						(char *)user_args[0],
+						(strlen((char *)user_args[0]) +
+						 1));
+				}
+			}
+		}
+	}
+	/* Update shared memory address and size */
+	if (DSP_SUCCEEDED(status)) {
+		/*  Create the message manager. This must be done
+		 *  before calling the IOOnLoaded function. */
+		dev_get_msg_mgr(p_proc_object->hdev_obj, &hmsg_mgr);
+		if (!hmsg_mgr) {
+			status = msg_create(&hmsg_mgr, p_proc_object->hdev_obj,
+					    (msg_onexit) node_on_exit);
+			DBC_ASSERT(DSP_SUCCEEDED(status));
+			dev_set_msg_mgr(p_proc_object->hdev_obj, hmsg_mgr);
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Set the Device object's message manager */
+		status = dev_get_io_mgr(p_proc_object->hdev_obj, &hio_mgr);
+		if (hio_mgr)
+			status = (*p_proc_object->intf_fxns->pfn_io_on_loaded)
+								(hio_mgr);
+		else
+			status = -EFAULT;
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Now, attempt to load an exec: */
+
+		/* Boost the OPP level to Maximum level supported by baseport */
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+		if (pdata->cpu_set_freq)
+			(*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP5]);
+#endif
+		status = cod_load_base(cod_mgr, argc_index, (char **)user_args,
+				       dev_brd_write_fxn,
+				       p_proc_object->hdev_obj, NULL);
+		if (DSP_FAILED(status)) {
+			if (status == -EBADF) {
+				dev_dbg(bridge, "%s: Failure to Load the EXE\n",
+					__func__);
+			}
+			if (status == -ESPIPE) {
+				pr_err("%s: Couldn't parse the file\n",
+				       __func__);
+			}
+		}
+		/* Requesting the lowest opp supported */
+#if defined(CONFIG_BRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
+		if (pdata->cpu_set_freq)
+			(*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP1]);
+#endif
+
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Update the Processor status to loaded */
+		status = (*p_proc_object->intf_fxns->pfn_brd_set_state)
+		    (p_proc_object->hbridge_context, BRD_LOADED);
+		if (DSP_SUCCEEDED(status)) {
+			p_proc_object->proc_state = PROC_LOADED;
+			if (p_proc_object->ntfy_obj)
+				proc_notify_clients(p_proc_object,
+						    DSP_PROCESSORSTATECHANGE);
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		status = proc_get_processor_id(hprocessor, &proc_id);
+		if (proc_id == DSP_UNIT) {
+			/* Use all available DSP address space after EXTMEM
+			 * for DMM */
+			if (DSP_SUCCEEDED(status))
+				status = cod_get_sym_value(cod_mgr, EXTEND,
+							   &dw_ext_end);
+
+			/* Reset DMM structs and add an initial free chunk */
+			if (DSP_SUCCEEDED(status)) {
+				status =
+				    dev_get_dmm_mgr(p_proc_object->hdev_obj,
+						    &dmm_mgr);
+				if (dmm_mgr) {
+					/* Set dw_ext_end to DMM START u8
+					 * address */
+					dw_ext_end =
+					    (dw_ext_end + 1) * DSPWORDSIZE;
+					/* DMM memory is from EXT_END */
+					status = dmm_create_tables(dmm_mgr,
+								   dw_ext_end,
+								   DMMPOOLSIZE);
+				} else {
+					status = -EFAULT;
+				}
+			}
+		}
+	}
+	/* Restore the original argv[0] */
+	kfree(new_envp);
+	user_args[0] = pargv0;
+	if (DSP_SUCCEEDED(status)) {
+		if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_status)
+				(p_proc_object->hbridge_context, &brd_state))) {
+			pr_info("%s: Processor Loaded %s\n", __func__, pargv0);
+			kfree(drv_datap->base_img);
+			drv_datap->base_img = kmalloc(strlen(pargv0) + 1,
+								GFP_KERNEL);
+			if (drv_datap->base_img)
+				strncpy(drv_datap->base_img, pargv0,
+							strlen(pargv0) + 1);
+			else
+				status = -ENOMEM;
+			DBC_ASSERT(brd_state == BRD_LOADED);
+		}
+	}
+
+func_end:
+	if (DSP_FAILED(status))
+		pr_err("%s: Processor failed to load\n", __func__);
+
+	DBC_ENSURE((DSP_SUCCEEDED(status)
+		    && p_proc_object->proc_state == PROC_LOADED)
+		   || DSP_FAILED(status));
+#ifdef OPT_LOAD_TIME_INSTRUMENTATION
+	do_gettimeofday(&tv2);
+	if (tv2.tv_usec < tv1.tv_usec) {
+		tv2.tv_usec += 1000000;
+		tv2.tv_sec--;
+	}
+	dev_dbg(bridge, "%s: time to load %d sec and %d usec\n", __func__,
+		tv2.tv_sec - tv1.tv_sec, tv2.tv_usec - tv1.tv_usec);
+#endif
+	return status;
+}
+
+/*
+ *  ======== proc_map ========
+ *  Purpose:
+ *      Maps a MPU buffer to DSP address space.
+ */
+int proc_map(void *hprocessor, void *pmpu_addr, u32 ul_size,
+		    void *req_addr, void **pp_map_addr, u32 ul_map_attr,
+		    struct process_context *pr_ctxt)
+{
+	u32 va_align;
+	u32 pa_align;
+	struct dmm_object *dmm_mgr;
+	u32 size_align;
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct dmm_map_object *map_obj;
+	u32 tmp_addr = 0;
+
+#ifdef CONFIG_BRIDGE_CACHE_LINE_CHECK
+	if ((ul_map_attr & BUFMODE_MASK) != RBUF) {
+		if (!IS_ALIGNED((u32)pmpu_addr, DSP_CACHE_LINE) ||
+		    !IS_ALIGNED(ul_size, DSP_CACHE_LINE)) {
+			pr_err("%s: not aligned: 0x%x (%d)\n", __func__,
+						(u32)pmpu_addr, ul_size);
+			return -EFAULT;
+		}
+	}
+#endif
+
+	/* Calculate the page-aligned PA, VA and size */
+	va_align = PG_ALIGN_LOW((u32) req_addr, PG_SIZE4K);
+	pa_align = PG_ALIGN_LOW((u32) pmpu_addr, PG_SIZE4K);
+	size_align = PG_ALIGN_HIGH(ul_size + (u32) pmpu_addr - pa_align,
+				   PG_SIZE4K);
+
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	/* Critical section */
+	mutex_lock(&proc_lock);
+	dmm_get_handle(p_proc_object, &dmm_mgr);
+	if (dmm_mgr)
+		status = dmm_map_memory(dmm_mgr, va_align, size_align);
+	else
+		status = -EFAULT;
+
+	/* Add mapping to the page tables. */
+	if (DSP_SUCCEEDED(status)) {
+
+		/* Mapped address = MSB of VA | LSB of PA */
+		tmp_addr = (va_align | ((u32) pmpu_addr & (PG_SIZE4K - 1)));
+		/* mapped memory resource tracking */
+		map_obj = add_mapping_info(pr_ctxt, pa_align, tmp_addr,
+						size_align);
+		if (!map_obj)
+			status = -ENOMEM;
+		else
+			status = (*p_proc_object->intf_fxns->pfn_brd_mem_map)
+			    (p_proc_object->hbridge_context, pa_align, va_align,
+			     size_align, ul_map_attr, map_obj->pages);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* Mapped address = MSB of VA | LSB of PA */
+		*pp_map_addr = (void *) tmp_addr;
+	} else {
+		remove_mapping_information(pr_ctxt, tmp_addr, size_align);
+		dmm_un_map_memory(dmm_mgr, va_align, &size_align);
+	}
+	mutex_unlock(&proc_lock);
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+func_end:
+	dev_dbg(bridge, "%s: hprocessor %p, pmpu_addr %p, ul_size %x, "
+		"req_addr %p, ul_map_attr %x, pp_map_addr %p, va_align %x, "
+		"pa_align %x, size_align %x status 0x%x\n", __func__,
+		hprocessor, pmpu_addr, ul_size, req_addr, ul_map_attr,
+		pp_map_addr, va_align, pa_align, size_align, status);
+
+	return status;
+}
+
+/*
+ *  ======== proc_register_notify ========
+ *  Purpose:
+ *      Register to be notified of specific processor events.
+ */
+int proc_register_notify(void *hprocessor, u32 event_mask,
+				u32 notify_type, struct dsp_notification
+				* hnotification)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct deh_mgr *hdeh_mgr;
+
+	DBC_REQUIRE(hnotification != NULL);
+	DBC_REQUIRE(refs > 0);
+
+	/* Check processor handle */
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	/* Check if event mask is a valid processor related event */
+	if (event_mask & ~(DSP_PROCESSORSTATECHANGE | DSP_PROCESSORATTACH |
+			DSP_PROCESSORDETACH | DSP_PROCESSORRESTART |
+			DSP_MMUFAULT | DSP_SYSERROR | DSP_PWRERROR |
+			DSP_WDTOVERFLOW))
+		status = -EINVAL;
+
+	/* Check if notify type is valid */
+	if (notify_type != DSP_SIGNALEVENT)
+		status = -EINVAL;
+
+	if (DSP_SUCCEEDED(status)) {
+		/* If event mask is not DSP_SYSERROR, DSP_MMUFAULT,
+		 * or DSP_PWRERROR then register event immediately. */
+		if (event_mask &
+		    ~(DSP_SYSERROR | DSP_MMUFAULT | DSP_PWRERROR |
+				DSP_WDTOVERFLOW)) {
+			status = ntfy_register(p_proc_object->ntfy_obj,
+					       hnotification, event_mask,
+					       notify_type);
+			/* Special case alert, special case alert!
+			 * If we're trying to *deregister* (i.e. event_mask
+			 * is 0), a DSP_SYSERROR or DSP_MMUFAULT notification,
+			 * we have to deregister with the DEH manager.
+			 * There's no way to know, based on event_mask which
+			 * manager the notification event was registered with,
+			 * so if we're trying to deregister and ntfy_register
+			 * failed, we'll give the deh manager a shot.
+			 */
+			if ((event_mask == 0) && DSP_FAILED(status)) {
+				status =
+				    dev_get_deh_mgr(p_proc_object->hdev_obj,
+						    &hdeh_mgr);
+				DBC_ASSERT(p_proc_object->
+					   intf_fxns->pfn_deh_register_notify);
+				status =
+				    (*p_proc_object->
+				     intf_fxns->pfn_deh_register_notify)
+				    (hdeh_mgr, event_mask, notify_type,
+				     hnotification);
+			}
+		} else {
+			status = dev_get_deh_mgr(p_proc_object->hdev_obj,
+						 &hdeh_mgr);
+			DBC_ASSERT(p_proc_object->
+				   intf_fxns->pfn_deh_register_notify);
+			status =
+			    (*p_proc_object->intf_fxns->pfn_deh_register_notify)
+			    (hdeh_mgr, event_mask, notify_type, hnotification);
+
+		}
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== proc_reserve_memory ========
+ *  Purpose:
+ *      Reserve a virtually contiguous region of DSP address space.
+ */
+int proc_reserve_memory(void *hprocessor, u32 ul_size,
+			       void **pp_rsv_addr,
+			       struct process_context *pr_ctxt)
+{
+	struct dmm_object *dmm_mgr;
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct dmm_rsv_object *rsv_obj;
+
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = dmm_get_handle(p_proc_object, &dmm_mgr);
+	if (!dmm_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = dmm_reserve_memory(dmm_mgr, ul_size, (u32 *) pp_rsv_addr);
+	if (status != 0)
+		goto func_end;
+
+	/*
+	 * A successful reserve should be followed by insertion of rsv_obj
+	 * into dmm_rsv_list, so that reserved memory resource tracking
+	 * remains uptodate
+	 */
+	rsv_obj = kmalloc(sizeof(struct dmm_rsv_object), GFP_KERNEL);
+	if (rsv_obj) {
+		rsv_obj->dsp_reserved_addr = (u32) *pp_rsv_addr;
+		spin_lock(&pr_ctxt->dmm_rsv_lock);
+		list_add(&rsv_obj->link, &pr_ctxt->dmm_rsv_list);
+		spin_unlock(&pr_ctxt->dmm_rsv_lock);
+	}
+
+func_end:
+	dev_dbg(bridge, "%s: hprocessor: 0x%p ul_size: 0x%x pp_rsv_addr: 0x%p "
+		"status 0x%x\n", __func__, hprocessor,
+		ul_size, pp_rsv_addr, status);
+	return status;
+}
+
+/*
+ *  ======== proc_start ========
+ *  Purpose:
+ *      Start a processor running.
+ */
+int proc_start(void *hprocessor)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct cod_manager *cod_mgr;	/* Code manager handle */
+	u32 dw_dsp_addr;	/* Loaded code's entry point. */
+	int brd_state;
+
+	DBC_REQUIRE(refs > 0);
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	/* Call the bridge_brd_start */
+	if (p_proc_object->proc_state != PROC_LOADED) {
+		status = -EBADR;
+		goto func_end;
+	}
+	status = dev_get_cod_mgr(p_proc_object->hdev_obj, &cod_mgr);
+	if (!cod_mgr) {
+		status = -EFAULT;
+		goto func_cont;
+	}
+
+	status = cod_get_entry(cod_mgr, &dw_dsp_addr);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	status = (*p_proc_object->intf_fxns->pfn_brd_start)
+	    (p_proc_object->hbridge_context, dw_dsp_addr);
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	/* Call dev_create2 */
+	status = dev_create2(p_proc_object->hdev_obj);
+	if (DSP_SUCCEEDED(status)) {
+		p_proc_object->proc_state = PROC_RUNNING;
+		/* Deep sleep switces off the peripheral clocks.
+		 * we just put the DSP CPU in idle in the idle loop.
+		 * so there is no need to send a command to DSP */
+
+		if (p_proc_object->ntfy_obj) {
+			proc_notify_clients(p_proc_object,
+					    DSP_PROCESSORSTATECHANGE);
+		}
+	} else {
+		/* Failed to Create Node Manager and DISP Object
+		 * Stop the Processor from running. Put it in STOPPED State */
+		(void)(*p_proc_object->intf_fxns->
+		       pfn_brd_stop) (p_proc_object->hbridge_context);
+		p_proc_object->proc_state = PROC_STOPPED;
+	}
+func_cont:
+	if (DSP_SUCCEEDED(status)) {
+		if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_status)
+				(p_proc_object->hbridge_context, &brd_state))) {
+			pr_info("%s: dsp in running state\n", __func__);
+			DBC_ASSERT(brd_state != BRD_HIBERNATION);
+		}
+	} else {
+		pr_err("%s: Failed to start the dsp\n", __func__);
+	}
+
+func_end:
+	DBC_ENSURE((DSP_SUCCEEDED(status) && p_proc_object->proc_state ==
+		    PROC_RUNNING) || DSP_FAILED(status));
+	return status;
+}
+
+/*
+ *  ======== proc_stop ========
+ *  Purpose:
+ *      Stop a processor running.
+ */
+int proc_stop(void *hprocessor)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct msg_mgr *hmsg_mgr;
+	struct node_mgr *hnode_mgr;
+	void *hnode;
+	u32 node_tab_size = 1;
+	u32 num_nodes = 0;
+	u32 nodes_allocated = 0;
+	int brd_state;
+
+	DBC_REQUIRE(refs > 0);
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_status)
+			  (p_proc_object->hbridge_context, &brd_state))) {
+		if (brd_state == BRD_ERROR)
+			bridge_deh_release_dummy_mem();
+	}
+	/* check if there are any running nodes */
+	status = dev_get_node_manager(p_proc_object->hdev_obj, &hnode_mgr);
+	if (DSP_SUCCEEDED(status) && hnode_mgr) {
+		status = node_enum_nodes(hnode_mgr, &hnode, node_tab_size,
+					 &num_nodes, &nodes_allocated);
+		if ((status == -EINVAL) || (nodes_allocated > 0)) {
+			pr_err("%s: Can't stop device, active nodes = %d \n",
+			       __func__, nodes_allocated);
+			return -EBADR;
+		}
+	}
+	/* Call the bridge_brd_stop */
+	/* It is OK to stop a device that does n't have nodes OR not started */
+	status =
+	    (*p_proc_object->intf_fxns->
+	     pfn_brd_stop) (p_proc_object->hbridge_context);
+	if (DSP_SUCCEEDED(status)) {
+		dev_dbg(bridge, "%s: processor in standby mode\n", __func__);
+		p_proc_object->proc_state = PROC_STOPPED;
+		/* Destory the Node Manager, msg_ctrl Manager */
+		if (DSP_SUCCEEDED(dev_destroy2(p_proc_object->hdev_obj))) {
+			/* Destroy the msg_ctrl by calling msg_delete */
+			dev_get_msg_mgr(p_proc_object->hdev_obj, &hmsg_mgr);
+			if (hmsg_mgr) {
+				msg_delete(hmsg_mgr);
+				dev_set_msg_mgr(p_proc_object->hdev_obj, NULL);
+			}
+			if (DSP_SUCCEEDED
+			    ((*p_proc_object->
+			      intf_fxns->pfn_brd_status) (p_proc_object->
+							  hbridge_context,
+							  &brd_state)))
+				DBC_ASSERT(brd_state == BRD_STOPPED);
+		}
+	} else {
+		pr_err("%s: Failed to stop the processor\n", __func__);
+	}
+func_end:
+
+	return status;
+}
+
+/*
+ *  ======== proc_un_map ========
+ *  Purpose:
+ *      Removes a MPU buffer mapping from the DSP address space.
+ */
+int proc_un_map(void *hprocessor, void *map_addr,
+		       struct process_context *pr_ctxt)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct dmm_object *dmm_mgr;
+	u32 va_align;
+	u32 size_align;
+
+	va_align = PG_ALIGN_LOW((u32) map_addr, PG_SIZE4K);
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = dmm_get_handle(hprocessor, &dmm_mgr);
+	if (!dmm_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	/* Critical section */
+	mutex_lock(&proc_lock);
+	/*
+	 * Update DMM structures. Get the size to unmap.
+	 * This function returns error if the VA is not mapped
+	 */
+	status = dmm_un_map_memory(dmm_mgr, (u32) va_align, &size_align);
+	/* Remove mapping from the page tables. */
+	if (DSP_SUCCEEDED(status)) {
+		status = (*p_proc_object->intf_fxns->pfn_brd_mem_un_map)
+		    (p_proc_object->hbridge_context, va_align, size_align);
+	}
+
+	mutex_unlock(&proc_lock);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/*
+	 * A successful unmap should be followed by removal of map_obj
+	 * from dmm_map_list, so that mapped memory resource tracking
+	 * remains uptodate
+	 */
+	remove_mapping_information(pr_ctxt, (u32) map_addr, size_align);
+
+func_end:
+	dev_dbg(bridge, "%s: hprocessor: 0x%p map_addr: 0x%p status: 0x%x\n",
+		__func__, hprocessor, map_addr, status);
+	return status;
+}
+
+/*
+ *  ======== proc_un_reserve_memory ========
+ *  Purpose:
+ *      Frees a previously reserved region of DSP address space.
+ */
+int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
+				  struct process_context *pr_ctxt)
+{
+	struct dmm_object *dmm_mgr;
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+	struct dmm_rsv_object *rsv_obj;
+
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = dmm_get_handle(p_proc_object, &dmm_mgr);
+	if (!dmm_mgr) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	status = dmm_un_reserve_memory(dmm_mgr, (u32) prsv_addr);
+	if (status != 0)
+		goto func_end;
+
+	/*
+	 * A successful unreserve should be followed by removal of rsv_obj
+	 * from dmm_rsv_list, so that reserved memory resource tracking
+	 * remains uptodate
+	 */
+	spin_lock(&pr_ctxt->dmm_rsv_lock);
+	list_for_each_entry(rsv_obj, &pr_ctxt->dmm_rsv_list, link) {
+		if (rsv_obj->dsp_reserved_addr == (u32) prsv_addr) {
+			list_del(&rsv_obj->link);
+			kfree(rsv_obj);
+			break;
+		}
+	}
+	spin_unlock(&pr_ctxt->dmm_rsv_lock);
+
+func_end:
+	dev_dbg(bridge, "%s: hprocessor: 0x%p prsv_addr: 0x%p status: 0x%x\n",
+		__func__, hprocessor, prsv_addr, status);
+	return status;
+}
+
+/*
+ *  ======== = proc_monitor ======== ==
+ *  Purpose:
+ *      Place the Processor in Monitor State. This is an internal
+ *      function and a requirement before Processor is loaded.
+ *      This does a bridge_brd_stop, dev_destroy2 and bridge_brd_monitor.
+ *      In dev_destroy2 we delete the node manager.
+ *  Parameters:
+ *      p_proc_object:    Pointer to Processor Object
+ *  Returns:
+ *      0:	Processor placed in monitor mode.
+ *      !0:       Failed to place processor in monitor mode.
+ *  Requires:
+ *      Valid Processor Handle
+ *  Ensures:
+ *      Success:	ProcObject state is PROC_IDLE
+ */
+static int proc_monitor(struct proc_object *p_proc_object)
+{
+	int status = -EPERM;
+	struct msg_mgr *hmsg_mgr;
+	int brd_state;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(p_proc_object);
+
+	/* This is needed only when Device is loaded when it is
+	 * already 'ACTIVE' */
+	/* Destory the Node Manager, msg_ctrl Manager */
+	if (DSP_SUCCEEDED(dev_destroy2(p_proc_object->hdev_obj))) {
+		/* Destroy the msg_ctrl by calling msg_delete */
+		dev_get_msg_mgr(p_proc_object->hdev_obj, &hmsg_mgr);
+		if (hmsg_mgr) {
+			msg_delete(hmsg_mgr);
+			dev_set_msg_mgr(p_proc_object->hdev_obj, NULL);
+		}
+	}
+	/* Place the Board in the Monitor State */
+	if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_monitor)
+			  (p_proc_object->hbridge_context))) {
+		status = 0;
+		if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_status)
+				  (p_proc_object->hbridge_context, &brd_state)))
+			DBC_ASSERT(brd_state == BRD_IDLE);
+	}
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && brd_state == BRD_IDLE) ||
+		   DSP_FAILED(status));
+	return status;
+}
+
+/*
+ *  ======== get_envp_count ========
+ *  Purpose:
+ *      Return the number of elements in the envp array, including the
+ *      terminating NULL element.
+ */
+static s32 get_envp_count(char **envp)
+{
+	s32 ret = 0;
+	if (envp) {
+		while (*envp++)
+			ret++;
+
+		ret += 1;	/* Include the terminating NULL in the count. */
+	}
+
+	return ret;
+}
+
+/*
+ *  ======== prepend_envp ========
+ *  Purpose:
+ *      Prepend an environment variable=value pair to the new envp array, and
+ *      copy in the existing var=value pairs in the old envp array.
+ */
+static char **prepend_envp(char **new_envp, char **envp, s32 envp_elems,
+			   s32 cnew_envp, char *szVar)
+{
+	char **pp_envp = new_envp;
+
+	DBC_REQUIRE(new_envp);
+
+	/* Prepend new environ var=value string */
+	*new_envp++ = szVar;
+
+	/* Copy user's environment into our own. */
+	while (envp_elems--)
+		*new_envp++ = *envp++;
+
+	/* Ensure NULL terminates the new environment strings array. */
+	if (envp_elems == 0)
+		*new_envp = NULL;
+
+	return pp_envp;
+}
+
+/*
+ *  ======== proc_notify_clients ========
+ *  Purpose:
+ *      Notify the processor the events.
+ */
+int proc_notify_clients(void *hProc, u32 uEvents)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hProc;
+
+	DBC_REQUIRE(p_proc_object);
+	DBC_REQUIRE(IS_VALID_PROC_EVENT(uEvents));
+	DBC_REQUIRE(refs > 0);
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	ntfy_notify(p_proc_object->ntfy_obj, uEvents);
+func_end:
+	return status;
+}
+
+/*
+ *  ======== proc_notify_all_clients ========
+ *  Purpose:
+ *      Notify the processor the events. This includes notifying all clients
+ *      attached to a particulat DSP.
+ */
+int proc_notify_all_clients(void *hProc, u32 uEvents)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hProc;
+
+	DBC_REQUIRE(IS_VALID_PROC_EVENT(uEvents));
+	DBC_REQUIRE(refs > 0);
+
+	if (!p_proc_object) {
+		status = -EFAULT;
+		goto func_end;
+	}
+
+	dev_notify_clients(p_proc_object->hdev_obj, uEvents);
+
+func_end:
+	return status;
+}
+
+/*
+ *  ======== proc_get_processor_id ========
+ *  Purpose:
+ *      Retrieves the processor ID.
+ */
+int proc_get_processor_id(void *hProc, u32 * procID)
+{
+	int status = 0;
+	struct proc_object *p_proc_object = (struct proc_object *)hProc;
+
+	if (p_proc_object)
+		*procID = p_proc_object->processor_id;
+	else
+		status = -EFAULT;
+
+	return status;
+}

drivers/staging/tidspbridge/rmgr/pwr.c

+/*
+ * pwr.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * PWR API for controlling DSP power states.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/pwr.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/devdefs.h>
+#include <dspbridge/drv.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/dev.h>
+
+/*  ----------------------------------- Link Driver */
+#include <dspbridge/dspioctl.h>
+
+/*
+ *  ======== pwr_sleep_dsp ========
+ *    Send command to DSP to enter sleep state.
+ */
+int pwr_sleep_dsp(IN CONST u32 sleepCode, IN CONST u32 timeout)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 ioctlcode = 0;
+	u32 arg = timeout;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj =
+	     (struct dev_object *)drv_get_next_dev_object((u32) hdev_obj)) {
+		if (DSP_FAILED(dev_get_bridge_context(hdev_obj,
+						(struct bridge_dev_context **)
+						   &dw_context))) {
+			continue;
+		}
+		if (DSP_FAILED(dev_get_intf_fxns(hdev_obj,
+						(struct bridge_drv_interface **)
+						&intf_fxns))) {
+			continue;
+		}
+		if (sleepCode == PWR_DEEPSLEEP)
+			ioctlcode = BRDIOCTL_DEEPSLEEP;
+		else if (sleepCode == PWR_EMERGENCYDEEPSLEEP)
+			ioctlcode = BRDIOCTL_EMERGENCYSLEEP;
+		else
+			status = -EINVAL;
+
+		if (status != -EINVAL) {
+			status = (*intf_fxns->pfn_dev_cntrl) (dw_context,
+							      ioctlcode,
+							      (void *)&arg);
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_wake_dsp ========
+ *    Send command to DSP to wake it from sleep.
+ */
+int pwr_wake_dsp(IN CONST u32 timeout)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg = timeout;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+							BRDIOCTL_WAKEUP,
+							(void *)&arg);
+			}
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_pm_pre_scale========
+ *    Sends pre-notification message to DSP.
+ */
+int pwr_pm_pre_scale(IN u16 voltage_domain, u32 level)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg[2];
+
+	arg[0] = voltage_domain;
+	arg[1] = level;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+						BRDIOCTL_PRESCALE_NOTIFY,
+						(void *)&arg);
+			}
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_pm_post_scale========
+ *    Sends post-notification message to DSP.
+ */
+int pwr_pm_post_scale(IN u16 voltage_domain, u32 level)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg[2];
+
+	arg[0] = voltage_domain;
+	arg[1] = level;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+						BRDIOCTL_POSTSCALE_NOTIFY,
+						(void *)&arg);
+			}
+		}
+	}
+	return status;
+
+}

drivers/staging/tidspbridge/rmgr/rmm.c

+/*
+ * rmm.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+ *  This memory manager provides general heap management and arbitrary
+ *  alignment for any number of memory segments.
+ *
+ *  Notes:
+ *
+ *  Memory blocks are allocated from the end of the first free memory
+ *  block large enough to satisfy the request.  Alignment requirements
+ *  are satisfied by "sliding" the block forward until its base satisfies
+ *  the alignment specification; if this is not possible then the next
+ *  free block large enough to hold the request is tried.
+ *
+ *  Since alignment can cause the creation of a new free block - the
+ *  unused memory formed between the start of the original free block
+ *  and the start of the allocated block - the memory manager must free
+ *  this memory to prevent a memory leak.
+ *
+ *  Overlay memory is managed by reserving through rmm_alloc, and freeing
+ *  it through rmm_free. The memory manager prevents DSP code/data that is
+ *  overlayed from being overwritten as long as the memory it runs at has
+ *  been allocated, and not yet freed.
+ */
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/list.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/rmm.h>
+
+/*
+ *  ======== rmm_header ========
+ *  This header is used to maintain a list of free memory blocks.
+ */
+struct rmm_header {
+	struct rmm_header *next;	/* form a free memory link list */
+	u32 size;		/* size of the free memory */
+	u32 addr;		/* DSP address of memory block */
+};
+
+/*
+ *  ======== rmm_ovly_sect ========
+ *  Keeps track of memory occupied by overlay section.
+ */
+struct rmm_ovly_sect {
+	struct list_head list_elem;
+	u32 addr;		/* Start of memory section */
+	u32 size;		/* Length (target MAUs) of section */
+	s32 page;		/* Memory page */
+};
+
+/*
+ *  ======== rmm_target_obj ========
+ */
+struct rmm_target_obj {
+	struct rmm_segment *seg_tab;
+	struct rmm_header **free_list;
+	u32 num_segs;
+	struct lst_list *ovly_list;	/* List of overlay memory in use */
+};
+
+static u32 refs;		/* module reference count */
+
+static bool alloc_block(struct rmm_target_obj *target, u32 segid, u32 size,
+			u32 align, u32 *dspAddr);
+static bool free_block(struct rmm_target_obj *target, u32 segid, u32 addr,
+		       u32 size);
+
+/*
+ *  ======== rmm_alloc ========
+ */
+int rmm_alloc(struct rmm_target_obj *target, u32 segid, u32 size,
+		     u32 align, u32 *dspAddr, bool reserve)
+{
+	struct rmm_ovly_sect *sect;
+	struct rmm_ovly_sect *prev_sect = NULL;
+	struct rmm_ovly_sect *new_sect;
+	u32 addr;
+	int status = 0;
+
+	DBC_REQUIRE(target);
+	DBC_REQUIRE(dspAddr != NULL);
+	DBC_REQUIRE(size > 0);
+	DBC_REQUIRE(reserve || (target->num_segs > 0));
+	DBC_REQUIRE(refs > 0);
+
+	if (!reserve) {
+		if (!alloc_block(target, segid, size, align, dspAddr)) {
+			status = -ENOMEM;
+		} else {
+			/* Increment the number of allocated blocks in this
+			 * segment */
+			target->seg_tab[segid].number++;
+		}
+		goto func_end;
+	}
+	/* An overlay section - See if block is already in use. If not,
+	 * insert into the list in ascending address size. */
+	addr = *dspAddr;
+	sect = (struct rmm_ovly_sect *)lst_first(target->ovly_list);
+	/*  Find place to insert new list element. List is sorted from
+	 *  smallest to largest address. */
+	while (sect != NULL) {
+		if (addr <= sect->addr) {
+			/* Check for overlap with sect */
+			if ((addr + size > sect->addr) || (prev_sect &&
+							   (prev_sect->addr +
+							    prev_sect->size >
+							    addr))) {
+				status = -ENXIO;
+			}
+			break;
+		}
+		prev_sect = sect;
+		sect = (struct rmm_ovly_sect *)lst_next(target->ovly_list,
+							(struct list_head *)
+							sect);
+	}
+	if (DSP_SUCCEEDED(status)) {
+		/* No overlap - allocate list element for new section. */
+		new_sect = kzalloc(sizeof(struct rmm_ovly_sect), GFP_KERNEL);
+		if (new_sect == NULL) {
+			status = -ENOMEM;
+		} else {
+			lst_init_elem((struct list_head *)new_sect);
+			new_sect->addr = addr;
+			new_sect->size = size;
+			new_sect->page = segid;
+			if (sect == NULL) {
+				/* Put new section at the end of the list */
+				lst_put_tail(target->ovly_list,
+					     (struct list_head *)new_sect);
+			} else {
+				/* Put new section just before sect */
+				lst_insert_before(target->ovly_list,
+						  (struct list_head *)new_sect,
+						  (struct list_head *)sect);
+			}
+		}
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== rmm_create ========
+ */
+int rmm_create(struct rmm_target_obj **target_obj,
+		      struct rmm_segment seg_tab[], u32 num_segs)
+{
+	struct rmm_header *hptr;
+	struct rmm_segment *sptr, *tmp;
+	struct rmm_target_obj *target;
+	s32 i;
+	int status = 0;
+
+	DBC_REQUIRE(target_obj != NULL);
+	DBC_REQUIRE(num_segs == 0 || seg_tab != NULL);
+
+	/* Allocate DBL target object */
+	target = kzalloc(sizeof(struct rmm_target_obj), GFP_KERNEL);
+
+	if (target == NULL)
+		status = -ENOMEM;
+
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	target->num_segs = num_segs;
+	if (!(num_segs > 0))
+		goto func_cont;
+
+	/* Allocate the memory for freelist from host's memory */
+	target->free_list = kzalloc(num_segs * sizeof(struct rmm_header *),
+							GFP_KERNEL);
+	if (target->free_list == NULL) {
+		status = -ENOMEM;
+	} else {
+		/* Allocate headers for each element on the free list */
+		for (i = 0; i < (s32) num_segs; i++) {
+			target->free_list[i] =
+				kzalloc(sizeof(struct rmm_header), GFP_KERNEL);
+			if (target->free_list[i] == NULL) {
+				status = -ENOMEM;
+				break;
+			}
+		}
+		/* Allocate memory for initial segment table */
+		target->seg_tab = kzalloc(num_segs * sizeof(struct rmm_segment),
+								GFP_KERNEL);
+		if (target->seg_tab == NULL) {
+			status = -ENOMEM;
+		} else {
+			/* Initialize segment table and free list */
+			sptr = target->seg_tab;
+			for (i = 0, tmp = seg_tab; num_segs > 0;
+			     num_segs--, i++) {
+				*sptr = *tmp;
+				hptr = target->free_list[i];
+				hptr->addr = tmp->base;
+				hptr->size = tmp->length;
+				hptr->next = NULL;
+				tmp++;
+				sptr++;
+			}
+		}
+	}
+func_cont:
+	/* Initialize overlay memory list */
+	if (DSP_SUCCEEDED(status)) {
+		target->ovly_list = kzalloc(sizeof(struct lst_list),
+							GFP_KERNEL);
+		if (target->ovly_list == NULL)
+			status = -ENOMEM;
+		else
+			INIT_LIST_HEAD(&target->ovly_list->head);
+	}
+
+	if (DSP_SUCCEEDED(status)) {
+		*target_obj = target;
+	} else {
+		*target_obj = NULL;
+		if (target)
+			rmm_delete(target);
+
+	}
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *target_obj)
+		   || (DSP_FAILED(status) && *target_obj == NULL));
+
+	return status;
+}
+
+/*
+ *  ======== rmm_delete ========
+ */
+void rmm_delete(struct rmm_target_obj *target)
+{
+	struct rmm_ovly_sect *ovly_section;
+	struct rmm_header *hptr;
+	struct rmm_header *next;
+	u32 i;
+
+	DBC_REQUIRE(target);
+
+	kfree(target->seg_tab);
+
+	if (target->ovly_list) {
+		while ((ovly_section = (struct rmm_ovly_sect *)lst_get_head
+			(target->ovly_list))) {
+			kfree(ovly_section);
+		}
+		DBC_ASSERT(LST_IS_EMPTY(target->ovly_list));
+		kfree(target->ovly_list);
+	}
+
+	if (target->free_list != NULL) {
+		/* Free elements on freelist */
+		for (i = 0; i < target->num_segs; i++) {
+			hptr = next = target->free_list[i];
+			while (next) {
+				hptr = next;
+				next = hptr->next;
+				kfree(hptr);
+			}
+		}
+		kfree(target->free_list);
+	}
+
+	kfree(target);
+}
+
+/*
+ *  ======== rmm_exit ========
+ */
+void rmm_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== rmm_free ========
+ */
+bool rmm_free(struct rmm_target_obj *target, u32 segid, u32 addr, u32 size,
+	      bool reserved)
+{
+	struct rmm_ovly_sect *sect;
+	bool ret = true;
+
+	DBC_REQUIRE(target);
+
+	DBC_REQUIRE(reserved || segid < target->num_segs);
+	DBC_REQUIRE(reserved || (addr >= target->seg_tab[segid].base &&
+				 (addr + size) <= (target->seg_tab[segid].base +
+						   target->seg_tab[segid].
+						   length)));
+
+	/*
+	 *  Free or unreserve memory.
+	 */
+	if (!reserved) {
+		ret = free_block(target, segid, addr, size);
+		if (ret)
+			target->seg_tab[segid].number--;
+
+	} else {
+		/* Unreserve memory */
+		sect = (struct rmm_ovly_sect *)lst_first(target->ovly_list);
+		while (sect != NULL) {
+			if (addr == sect->addr) {
+				DBC_ASSERT(size == sect->size);
+				/* Remove from list */
+				lst_remove_elem(target->ovly_list,
+						(struct list_head *)sect);
+				kfree(sect);
+				break;
+			}
+			sect =
+			    (struct rmm_ovly_sect *)lst_next(target->ovly_list,
+							     (struct list_head
+							      *)sect);
+		}
+		if (sect == NULL)
+			ret = false;
+
+	}
+	return ret;
+}
+
+/*
+ *  ======== rmm_init ========
+ */
+bool rmm_init(void)
+{
+	DBC_REQUIRE(refs >= 0);
+
+	refs++;
+
+	return true;
+}
+
+/*
+ *  ======== rmm_stat ========
+ */
+bool rmm_stat(struct rmm_target_obj *target, enum dsp_memtype segid,
+	      struct dsp_memstat *pMemStatBuf)
+{
+	struct rmm_header *head;
+	bool ret = false;
+	u32 max_free_size = 0;
+	u32 total_free_size = 0;
+	u32 free_blocks = 0;
+
+	DBC_REQUIRE(pMemStatBuf != NULL);
+	DBC_ASSERT(target != NULL);
+
+	if ((u32) segid < target->num_segs) {
+		head = target->free_list[segid];
+
+		/* Collect data from free_list */
+		while (head != NULL) {
+			max_free_size = max(max_free_size, head->size);
+			total_free_size += head->size;
+			free_blocks++;
+			head = head->next;
+		}
+
+		/* ul_size */
+		pMemStatBuf->ul_size = target->seg_tab[segid].length;
+
+		/* ul_num_free_blocks */
+		pMemStatBuf->ul_num_free_blocks = free_blocks;
+
+		/* ul_total_free_size */
+		pMemStatBuf->ul_total_free_size = total_free_size;
+
+		/* ul_len_max_free_block */
+		pMemStatBuf->ul_len_max_free_block = max_free_size;
+
+		/* ul_num_alloc_blocks */
+		pMemStatBuf->ul_num_alloc_blocks =
+		    target->seg_tab[segid].number;
+
+		ret = true;
+	}
+
+	return ret;
+}
+
+/*
+ *  ======== balloc ========
+ *  This allocation function allocates memory from the lowest addresses
+ *  first.
+ */
+static bool alloc_block(struct rmm_target_obj *target, u32 segid, u32 size,
+			u32 align, u32 *dspAddr)
+{
+	struct rmm_header *head;
+	struct rmm_header *prevhead = NULL;
+	struct rmm_header *next;
+	u32 tmpalign;
+	u32 alignbytes;
+	u32 hsize;
+	u32 allocsize;
+	u32 addr;
+
+	alignbytes = (align == 0) ? 1 : align;
+	prevhead = NULL;
+	head = target->free_list[segid];
+
+	do {
+		hsize = head->size;
+		next = head->next;
+
+		addr = head->addr;	/* alloc from the bottom */
+
+		/* align allocation */
+		(tmpalign = (u32) addr % alignbytes);
+		if (tmpalign != 0)
+			tmpalign = alignbytes - tmpalign;
+
+		allocsize = size + tmpalign;
+
+		if (hsize >= allocsize) {	/* big enough */
+			if (hsize == allocsize && prevhead != NULL) {
+				prevhead->next = next;
+				kfree(head);
+			} else {
+				head->size = hsize - allocsize;
+				head->addr += allocsize;
+			}
+
+			/* free up any hole created by alignment */
+			if (tmpalign)
+				free_block(target, segid, addr, tmpalign);
+
+			*dspAddr = addr + tmpalign;
+			return true;
+		}
+
+		prevhead = head;
+		head = next;
+
+	} while (head != NULL);
+
+	return false;
+}
+
+/*
+ *  ======== free_block ========
+ *  TO DO: free_block() allocates memory, which could result in failure.
+ *  Could allocate an rmm_header in rmm_alloc(), to be kept in a pool.
+ *  free_block() could use an rmm_header from the pool, freeing as blocks
+ *  are coalesced.
+ */
+static bool free_block(struct rmm_target_obj *target, u32 segid, u32 addr,
+		       u32 size)
+{
+	struct rmm_header *head;
+	struct rmm_header *thead;
+	struct rmm_header *rhead;
+	bool ret = true;
+
+	/* Create a memory header to hold the newly free'd block. */
+	rhead = kzalloc(sizeof(struct rmm_header), GFP_KERNEL);
+	if (rhead == NULL) {
+		ret = false;
+	} else {
+		/* search down the free list to find the right place for addr */
+		head = target->free_list[segid];
+
+		if (addr >= head->addr) {
+			while (head->next != NULL && addr > head->next->addr)
+				head = head->next;
+
+			thead = head->next;
+
+			head->next = rhead;
+			rhead->next = thead;
+			rhead->addr = addr;
+			rhead->size = size;
+		} else {
+			*rhead = *head;
+			head->next = rhead;
+			head->addr = addr;
+			head->size = size;
+			thead = rhead->next;
+		}
+
+		/* join with upper block, if possible */
+		if (thead != NULL && (rhead->addr + rhead->size) ==
+		    thead->addr) {
+			head->next = rhead->next;
+			thead->size = size + thead->size;
+			thead->addr = addr;
+			kfree(rhead);
+			rhead = thead;
+		}
+
+		/* join with the lower block, if possible */
+		if ((head->addr + head->size) == rhead->addr) {
+			head->next = rhead->next;
+			head->size = head->size + rhead->size;
+			kfree(rhead);
+		}
+	}
+
+	return ret;
+}

drivers/staging/tidspbridge/rmgr/strm.c

+/*
+ * strm.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP/BIOS Bridge Stream Manager.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/sync.h>
+
+/*  ----------------------------------- Bridge Driver */
+#include <dspbridge/dspdefs.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/nodepriv.h>
+
+/*  ----------------------------------- Others */
+#include <dspbridge/cmm.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/strm.h>
+
+#include <dspbridge/cfg.h>
+#include <dspbridge/resourcecleanup.h>
+
+/*  ----------------------------------- Defines, Data Structures, Typedefs */
+#define DEFAULTTIMEOUT      10000
+#define DEFAULTNUMBUFS      2
+
+/*
+ *  ======== strm_mgr ========
+ *  The strm_mgr contains device information needed to open the underlying
+ *  channels of a stream.
+ */
+struct strm_mgr {
+	struct dev_object *dev_obj;	/* Device for this processor */
+	struct chnl_mgr *hchnl_mgr;	/* Channel manager */
+	/* Function interface to Bridge driver */
+	struct bridge_drv_interface *intf_fxns;
+};
+
+/*
+ *  ======== strm_object ========
+ *  This object is allocated in strm_open().
+ */
+struct strm_object {
+	struct strm_mgr *strm_mgr_obj;
+	struct chnl_object *chnl_obj;
+	u32 dir;		/* DSP_TONODE or DSP_FROMNODE */
+	u32 utimeout;
+	u32 num_bufs;		/* Max # of bufs allowed in stream */
+	u32 un_bufs_in_strm;	/* Current # of bufs in stream */
+	u32 ul_n_bytes;		/* bytes transferred since idled */
+	/* STREAM_IDLE, STREAM_READY, ... */
+	enum dsp_streamstate strm_state;
+	void *user_event;	/* Saved for strm_get_info() */
+	enum dsp_strmmode strm_mode;	/* STRMMODE_[PROCCOPY][ZEROCOPY]... */
+	u32 udma_chnl_id;	/* DMA chnl id */
+	u32 udma_priority;	/* DMA priority:DMAPRI_[LOW][HIGH] */
+	u32 segment_id;		/* >0 is SM segment.=0 is local heap */
+	u32 buf_alignment;	/* Alignment for stream bufs */
+	/* Stream's SM address translator */
+	struct cmm_xlatorobject *xlator;
+};
+
+/*  ----------------------------------- Globals */
+static u32 refs;		/* module reference count */
+
+/*  ----------------------------------- Function Prototypes */
+static int delete_strm(struct strm_object *hStrm);
+static void delete_strm_mgr(struct strm_mgr *strm_mgr_obj);
+
+/*
+ *  ======== strm_allocate_buffer ========
+ *  Purpose:
+ *      Allocates buffers for a stream.
+ */
+int strm_allocate_buffer(struct strm_object *hStrm, u32 usize,
+				OUT u8 **ap_buffer, u32 num_bufs,
+				struct process_context *pr_ctxt)
+{
+	int status = 0;
+	u32 alloc_cnt = 0;
+	u32 i;
+
+	void *hstrm_res;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(ap_buffer != NULL);
+
+	if (hStrm) {
+		/*
+		 * Allocate from segment specified at time of stream open.
+		 */
+		if (usize == 0)
+			status = -EINVAL;
+
+	} else {
+		status = -EFAULT;
+	}
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	for (i = 0; i < num_bufs; i++) {
+		DBC_ASSERT(hStrm->xlator != NULL);
+		(void)cmm_xlator_alloc_buf(hStrm->xlator, &ap_buffer[i], usize);
+		if (ap_buffer[i] == NULL) {
+			status = -ENOMEM;
+			alloc_cnt = i;
+			break;
+		}
+	}
+	if (DSP_FAILED(status))
+		strm_free_buffer(hStrm, ap_buffer, alloc_cnt, pr_ctxt);
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (drv_get_strm_res_element(hStrm, &hstrm_res, pr_ctxt) !=
+	    -ENOENT)
+		drv_proc_update_strm_res(num_bufs, hstrm_res);
+
+func_end:
+	return status;
+}
+
+/*
+ *  ======== strm_close ========
+ *  Purpose:
+ *      Close a stream opened with strm_open().
+ */
+int strm_close(struct strm_object *hStrm,
+		      struct process_context *pr_ctxt)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct chnl_info chnl_info_obj;
+	int status = 0;
+
+	void *hstrm_res;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hStrm) {
+		status = -EFAULT;
+	} else {
+		/* Have all buffers been reclaimed? If not, return
+		 * -EPIPE */
+		intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+		status =
+		    (*intf_fxns->pfn_chnl_get_info) (hStrm->chnl_obj,
+						     &chnl_info_obj);
+		DBC_ASSERT(DSP_SUCCEEDED(status));
+
+		if (chnl_info_obj.cio_cs > 0 || chnl_info_obj.cio_reqs > 0)
+			status = -EPIPE;
+		else
+			status = delete_strm(hStrm);
+	}
+
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (drv_get_strm_res_element(hStrm, &hstrm_res, pr_ctxt) !=
+	    -ENOENT)
+		drv_proc_remove_strm_res_element(hstrm_res, pr_ctxt);
+func_end:
+	DBC_ENSURE(status == 0 || status == -EFAULT ||
+		   status == -EPIPE || status == -EPERM);
+
+	dev_dbg(bridge, "%s: hStrm: %p, status 0x%x\n", __func__,
+		hStrm, status);
+	return status;
+}
+
+/*
+ *  ======== strm_create ========
+ *  Purpose:
+ *      Create a STRM manager object.
+ */
+int strm_create(OUT struct strm_mgr **phStrmMgr,
+		       struct dev_object *dev_obj)
+{
+	struct strm_mgr *strm_mgr_obj;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phStrmMgr != NULL);
+	DBC_REQUIRE(dev_obj != NULL);
+
+	*phStrmMgr = NULL;
+	/* Allocate STRM manager object */
+	strm_mgr_obj = kzalloc(sizeof(struct strm_mgr), GFP_KERNEL);
+	if (strm_mgr_obj == NULL)
+		status = -ENOMEM;
+	else
+		strm_mgr_obj->dev_obj = dev_obj;
+
+	/* Get Channel manager and Bridge function interface */
+	if (DSP_SUCCEEDED(status)) {
+		status = dev_get_chnl_mgr(dev_obj, &(strm_mgr_obj->hchnl_mgr));
+		if (DSP_SUCCEEDED(status)) {
+			(void)dev_get_intf_fxns(dev_obj,
+						&(strm_mgr_obj->intf_fxns));
+			DBC_ASSERT(strm_mgr_obj->intf_fxns != NULL);
+		}
+	}
+
+	if (DSP_SUCCEEDED(status))
+		*phStrmMgr = strm_mgr_obj;
+	else
+		delete_strm_mgr(strm_mgr_obj);
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phStrmMgr) ||
+				(DSP_FAILED(status) && *phStrmMgr == NULL));
+
+	return status;
+}
+
+/*
+ *  ======== strm_delete ========
+ *  Purpose:
+ *      Delete the STRM Manager Object.
+ */
+void strm_delete(struct strm_mgr *strm_mgr_obj)
+{
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(strm_mgr_obj);
+
+	delete_strm_mgr(strm_mgr_obj);
+}
+
+/*
+ *  ======== strm_exit ========
+ *  Purpose:
+ *      Discontinue usage of STRM module.
+ */
+void strm_exit(void)
+{
+	DBC_REQUIRE(refs > 0);
+
+	refs--;
+
+	DBC_ENSURE(refs >= 0);
+}
+
+/*
+ *  ======== strm_free_buffer ========
+ *  Purpose:
+ *      Frees the buffers allocated for a stream.
+ */
+int strm_free_buffer(struct strm_object *hStrm, u8 ** ap_buffer,
+			    u32 num_bufs, struct process_context *pr_ctxt)
+{
+	int status = 0;
+	u32 i = 0;
+
+	void *hstrm_res = NULL;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(ap_buffer != NULL);
+
+	if (!hStrm)
+		status = -EFAULT;
+
+	if (DSP_SUCCEEDED(status)) {
+		for (i = 0; i < num_bufs; i++) {
+			DBC_ASSERT(hStrm->xlator != NULL);
+			status =
+			    cmm_xlator_free_buf(hStrm->xlator, ap_buffer[i]);
+			if (DSP_FAILED(status))
+				break;
+			ap_buffer[i] = NULL;
+		}
+	}
+	if (drv_get_strm_res_element(hStrm, hstrm_res, pr_ctxt) !=
+	    -ENOENT)
+		drv_proc_update_strm_res(num_bufs - i, hstrm_res);
+
+	return status;
+}
+
+/*
+ *  ======== strm_get_info ========
+ *  Purpose:
+ *      Retrieves information about a stream.
+ */
+int strm_get_info(struct strm_object *hStrm,
+			 OUT struct stream_info *stream_info,
+			 u32 stream_info_size)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct chnl_info chnl_info_obj;
+	int status = 0;
+	void *virt_base = NULL;	/* NULL if no SM used */
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(stream_info != NULL);
+	DBC_REQUIRE(stream_info_size >= sizeof(struct stream_info));
+
+	if (!hStrm) {
+		status = -EFAULT;
+	} else {
+		if (stream_info_size < sizeof(struct stream_info)) {
+			/* size of users info */
+			status = -EINVAL;
+		}
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+	status =
+	    (*intf_fxns->pfn_chnl_get_info) (hStrm->chnl_obj, &chnl_info_obj);
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	if (hStrm->xlator) {
+		/* We have a translator */
+		DBC_ASSERT(hStrm->segment_id > 0);
+		cmm_xlator_info(hStrm->xlator, (u8 **) &virt_base, 0,
+				hStrm->segment_id, false);
+	}
+	stream_info->segment_id = hStrm->segment_id;
+	stream_info->strm_mode = hStrm->strm_mode;
+	stream_info->virt_base = virt_base;
+	stream_info->user_strm->number_bufs_allowed = hStrm->num_bufs;
+	stream_info->user_strm->number_bufs_in_stream = chnl_info_obj.cio_cs +
+	    chnl_info_obj.cio_reqs;
+	/* # of bytes transferred since last call to DSPStream_Idle() */
+	stream_info->user_strm->ul_number_bytes = chnl_info_obj.bytes_tx;
+	stream_info->user_strm->sync_object_handle = chnl_info_obj.event_obj;
+	/* Determine stream state based on channel state and info */
+	if (chnl_info_obj.dw_state & CHNL_STATEEOS) {
+		stream_info->user_strm->ss_stream_state = STREAM_DONE;
+	} else {
+		if (chnl_info_obj.cio_cs > 0)
+			stream_info->user_strm->ss_stream_state = STREAM_READY;
+		else if (chnl_info_obj.cio_reqs > 0)
+			stream_info->user_strm->ss_stream_state =
+			    STREAM_PENDING;
+		else
+			stream_info->user_strm->ss_stream_state = STREAM_IDLE;
+
+	}
+func_end:
+	return status;
+}
+
+/*
+ *  ======== strm_idle ========
+ *  Purpose:
+ *      Idles a particular stream.
+ */
+int strm_idle(struct strm_object *hStrm, bool fFlush)
+{
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+
+	if (!hStrm) {
+		status = -EFAULT;
+	} else {
+		intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+
+		status = (*intf_fxns->pfn_chnl_idle) (hStrm->chnl_obj,
+						      hStrm->utimeout, fFlush);
+	}
+
+	dev_dbg(bridge, "%s: hStrm: %p fFlush: 0x%x status: 0x%x\n",
+		__func__, hStrm, fFlush, status);
+	return status;
+}
+
+/*
+ *  ======== strm_init ========
+ *  Purpose:
+ *      Initialize the STRM module.
+ */
+bool strm_init(void)
+{
+	bool ret = true;
+
+	DBC_REQUIRE(refs >= 0);
+
+	if (ret)
+		refs++;
+
+	DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
+
+	return ret;
+}
+
+/*
+ *  ======== strm_issue ========
+ *  Purpose:
+ *      Issues a buffer on a stream
+ */
+int strm_issue(struct strm_object *hStrm, IN u8 *pbuf, u32 ul_bytes,
+		      u32 ul_buf_size, u32 dw_arg)
+{
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+	void *tmp_buf = NULL;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(pbuf != NULL);
+
+	if (!hStrm) {
+		status = -EFAULT;
+	} else {
+		intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+
+		if (hStrm->segment_id != 0) {
+			tmp_buf = cmm_xlator_translate(hStrm->xlator,
+						       (void *)pbuf,
+						       CMM_VA2DSPPA);
+			if (tmp_buf == NULL)
+				status = -ESRCH;
+
+		}
+		if (DSP_SUCCEEDED(status)) {
+			status = (*intf_fxns->pfn_chnl_add_io_req)
+			    (hStrm->chnl_obj, pbuf, ul_bytes, ul_buf_size,
+			     (u32) tmp_buf, dw_arg);
+		}
+		if (status == -EIO)
+			status = -ENOSR;
+	}
+
+	dev_dbg(bridge, "%s: hStrm: %p pbuf: %p ul_bytes: 0x%x dw_arg: 0x%x "
+		"status: 0x%x\n", __func__, hStrm, pbuf,
+		ul_bytes, dw_arg, status);
+	return status;
+}
+
+/*
+ *  ======== strm_open ========
+ *  Purpose:
+ *      Open a stream for sending/receiving data buffers to/from a task or
+ *      XDAIS socket node on the DSP.
+ */
+int strm_open(struct node_object *hnode, u32 dir, u32 index,
+		     IN struct strm_attr *pattr,
+		     OUT struct strm_object **phStrm,
+		     struct process_context *pr_ctxt)
+{
+	struct strm_mgr *strm_mgr_obj;
+	struct bridge_drv_interface *intf_fxns;
+	u32 ul_chnl_id;
+	struct strm_object *strm_obj = NULL;
+	s8 chnl_mode;
+	struct chnl_attr chnl_attr_obj;
+	int status = 0;
+	struct cmm_object *hcmm_mgr = NULL;	/* Shared memory manager hndl */
+
+	void *hstrm_res;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(phStrm != NULL);
+	DBC_REQUIRE(pattr != NULL);
+	*phStrm = NULL;
+	if (dir != DSP_TONODE && dir != DSP_FROMNODE) {
+		status = -EPERM;
+	} else {
+		/* Get the channel id from the node (set in node_connect()) */
+		status = node_get_channel_id(hnode, dir, index, &ul_chnl_id);
+	}
+	if (DSP_SUCCEEDED(status))
+		status = node_get_strm_mgr(hnode, &strm_mgr_obj);
+
+	if (DSP_SUCCEEDED(status)) {
+		strm_obj = kzalloc(sizeof(struct strm_object), GFP_KERNEL);
+		if (strm_obj == NULL) {
+			status = -ENOMEM;
+		} else {
+			strm_obj->strm_mgr_obj = strm_mgr_obj;
+			strm_obj->dir = dir;
+			strm_obj->strm_state = STREAM_IDLE;
+			strm_obj->user_event = pattr->user_event;
+			if (pattr->stream_attr_in != NULL) {
+				strm_obj->utimeout =
+				    pattr->stream_attr_in->utimeout;
+				strm_obj->num_bufs =
+				    pattr->stream_attr_in->num_bufs;
+				strm_obj->strm_mode =
+				    pattr->stream_attr_in->strm_mode;
+				strm_obj->segment_id =
+				    pattr->stream_attr_in->segment_id;
+				strm_obj->buf_alignment =
+				    pattr->stream_attr_in->buf_alignment;
+				strm_obj->udma_chnl_id =
+				    pattr->stream_attr_in->udma_chnl_id;
+				strm_obj->udma_priority =
+				    pattr->stream_attr_in->udma_priority;
+				chnl_attr_obj.uio_reqs =
+				    pattr->stream_attr_in->num_bufs;
+			} else {
+				strm_obj->utimeout = DEFAULTTIMEOUT;
+				strm_obj->num_bufs = DEFAULTNUMBUFS;
+				strm_obj->strm_mode = STRMMODE_PROCCOPY;
+				strm_obj->segment_id = 0;	/* local mem */
+				strm_obj->buf_alignment = 0;
+				strm_obj->udma_chnl_id = 0;
+				strm_obj->udma_priority = 0;
+				chnl_attr_obj.uio_reqs = DEFAULTNUMBUFS;
+			}
+			chnl_attr_obj.reserved1 = NULL;
+			/* DMA chnl flush timeout */
+			chnl_attr_obj.reserved2 = strm_obj->utimeout;
+			chnl_attr_obj.event_obj = NULL;
+			if (pattr->user_event != NULL)
+				chnl_attr_obj.event_obj = pattr->user_event;
+
+		}
+	}
+	if (DSP_FAILED(status))
+		goto func_cont;
+
+	if ((pattr->virt_base == NULL) || !(pattr->ul_virt_size > 0))
+		goto func_cont;
+
+	/* No System DMA */
+	DBC_ASSERT(strm_obj->strm_mode != STRMMODE_LDMA);
+	/* Get the shared mem mgr for this streams dev object */
+	status = dev_get_cmm_mgr(strm_mgr_obj->dev_obj, &hcmm_mgr);
+	if (DSP_SUCCEEDED(status)) {
+		/*Allocate a SM addr translator for this strm. */
+		status = cmm_xlator_create(&strm_obj->xlator, hcmm_mgr, NULL);
+		if (DSP_SUCCEEDED(status)) {
+			DBC_ASSERT(strm_obj->segment_id > 0);
+			/*  Set translators Virt Addr attributes */
+			status = cmm_xlator_info(strm_obj->xlator,
+						 (u8 **) &pattr->virt_base,
+						 pattr->ul_virt_size,
+						 strm_obj->segment_id, true);
+		}
+	}
+func_cont:
+	if (DSP_SUCCEEDED(status)) {
+		/* Open channel */
+		chnl_mode = (dir == DSP_TONODE) ?
+		    CHNL_MODETODSP : CHNL_MODEFROMDSP;
+		intf_fxns = strm_mgr_obj->intf_fxns;
+		status = (*intf_fxns->pfn_chnl_open) (&(strm_obj->chnl_obj),
+						      strm_mgr_obj->hchnl_mgr,
+						      chnl_mode, ul_chnl_id,
+						      &chnl_attr_obj);
+		if (DSP_FAILED(status)) {
+			/*
+			 * over-ride non-returnable status codes so we return
+			 * something documented
+			 */
+			if (status != -ENOMEM && status !=
+			    -EINVAL && status != -EPERM) {
+				/*
+				 * We got a status that's not return-able.
+				 * Assert that we got something we were
+				 * expecting (-EFAULT isn't acceptable,
+				 * strm_mgr_obj->hchnl_mgr better be valid or we
+				 * assert here), and then return -EPERM.
+				 */
+				DBC_ASSERT(status == -ENOSR ||
+					   status == -ECHRNG ||
+					   status == -EALREADY ||
+					   status == -EIO);
+				status = -EPERM;
+			}
+		}
+	}
+	if (DSP_SUCCEEDED(status)) {
+		*phStrm = strm_obj;
+		drv_proc_insert_strm_res_element(*phStrm, &hstrm_res, pr_ctxt);
+	} else {
+		(void)delete_strm(strm_obj);
+	}
+
+	/* ensure we return a documented error code */
+	DBC_ENSURE((DSP_SUCCEEDED(status) && *phStrm) ||
+		   (*phStrm == NULL && (status == -EFAULT ||
+					status == -EPERM
+					|| status == -EINVAL)));
+
+	dev_dbg(bridge, "%s: hnode: %p dir: 0x%x index: 0x%x pattr: %p "
+		"phStrm: %p status: 0x%x\n", __func__,
+		hnode, dir, index, pattr, phStrm, status);
+	return status;
+}
+
+/*
+ *  ======== strm_reclaim ========
+ *  Purpose:
+ *      Relcaims a buffer from a stream.
+ */
+int strm_reclaim(struct strm_object *hStrm, OUT u8 ** buf_ptr,
+			u32 *pulBytes, u32 *pulBufSize, u32 *pdw_arg)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct chnl_ioc chnl_ioc_obj;
+	int status = 0;
+	void *tmp_buf = NULL;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(buf_ptr != NULL);
+	DBC_REQUIRE(pulBytes != NULL);
+	DBC_REQUIRE(pdw_arg != NULL);
+
+	if (!hStrm) {
+		status = -EFAULT;
+		goto func_end;
+	}
+	intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+
+	status =
+	    (*intf_fxns->pfn_chnl_get_ioc) (hStrm->chnl_obj, hStrm->utimeout,
+					    &chnl_ioc_obj);
+	if (DSP_SUCCEEDED(status)) {
+		*pulBytes = chnl_ioc_obj.byte_size;
+		if (pulBufSize)
+			*pulBufSize = chnl_ioc_obj.buf_size;
+
+		*pdw_arg = chnl_ioc_obj.dw_arg;
+		if (!CHNL_IS_IO_COMPLETE(chnl_ioc_obj)) {
+			if (CHNL_IS_TIMED_OUT(chnl_ioc_obj)) {
+				status = -ETIME;
+			} else {
+				/* Allow reclaims after idle to succeed */
+				if (!CHNL_IS_IO_CANCELLED(chnl_ioc_obj))
+					status = -EPERM;
+
+			}
+		}
+		/* Translate zerocopy buffer if channel not canceled. */
+		if (DSP_SUCCEEDED(status)
+		    && (!CHNL_IS_IO_CANCELLED(chnl_ioc_obj))
+		    && (hStrm->strm_mode == STRMMODE_ZEROCOPY)) {
+			/*
+			 *  This is a zero-copy channel so chnl_ioc_obj.pbuf
+			 *  contains the DSP address of SM. We need to
+			 *  translate it to a virtual address for the user
+			 *  thread to access.
+			 *  Note: Could add CMM_DSPPA2VA to CMM in the future.
+			 */
+			tmp_buf = cmm_xlator_translate(hStrm->xlator,
+						       chnl_ioc_obj.pbuf,
+						       CMM_DSPPA2PA);
+			if (tmp_buf != NULL) {
+				/* now convert this GPP Pa to Va */
+				tmp_buf = cmm_xlator_translate(hStrm->xlator,
+							       tmp_buf,
+							       CMM_PA2VA);
+			}
+			if (tmp_buf == NULL)
+				status = -ESRCH;
+
+			chnl_ioc_obj.pbuf = tmp_buf;
+		}
+		*buf_ptr = chnl_ioc_obj.pbuf;
+	}
+func_end:
+	/* ensure we return a documented return code */
+	DBC_ENSURE(DSP_SUCCEEDED(status) || status == -EFAULT ||
+		   status == -ETIME || status == -ESRCH ||
+		   status == -EPERM);
+
+	dev_dbg(bridge, "%s: hStrm: %p buf_ptr: %p pulBytes: %p pdw_arg: %p "
+		"status 0x%x\n", __func__, hStrm,
+		buf_ptr, pulBytes, pdw_arg, status);
+	return status;
+}
+
+/*
+ *  ======== strm_register_notify ========
+ *  Purpose:
+ *      Register to be notified on specific events for this stream.
+ */
+int strm_register_notify(struct strm_object *hStrm, u32 event_mask,
+				u32 notify_type, struct dsp_notification
+				* hnotification)
+{
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(hnotification != NULL);
+
+	if (!hStrm) {
+		status = -EFAULT;
+	} else if ((event_mask & ~((DSP_STREAMIOCOMPLETION) |
+				   DSP_STREAMDONE)) != 0) {
+		status = -EINVAL;
+	} else {
+		if (notify_type != DSP_SIGNALEVENT)
+			status = -ENOSYS;
+
+	}
+	if (DSP_SUCCEEDED(status)) {
+		intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+
+		status =
+		    (*intf_fxns->pfn_chnl_register_notify) (hStrm->chnl_obj,
+							    event_mask,
+							    notify_type,
+							    hnotification);
+	}
+	/* ensure we return a documented return code */
+	DBC_ENSURE(DSP_SUCCEEDED(status) || status == -EFAULT ||
+		   status == -ETIME || status == -ESRCH ||
+		   status == -ENOSYS || status == -EPERM);
+	return status;
+}
+
+/*
+ *  ======== strm_select ========
+ *  Purpose:
+ *      Selects a ready stream.
+ */
+int strm_select(IN struct strm_object **strm_tab, u32 nStrms,
+		       OUT u32 *pmask, u32 utimeout)
+{
+	u32 index;
+	struct chnl_info chnl_info_obj;
+	struct bridge_drv_interface *intf_fxns;
+	struct sync_object **sync_events = NULL;
+	u32 i;
+	int status = 0;
+
+	DBC_REQUIRE(refs > 0);
+	DBC_REQUIRE(strm_tab != NULL);
+	DBC_REQUIRE(pmask != NULL);
+	DBC_REQUIRE(nStrms > 0);
+
+	*pmask = 0;
+	for (i = 0; i < nStrms; i++) {
+		if (!strm_tab[i]) {
+			status = -EFAULT;
+			break;
+		}
+	}
+	if (DSP_FAILED(status))
+		goto func_end;
+
+	/* Determine which channels have IO ready */
+	for (i = 0; i < nStrms; i++) {
+		intf_fxns = strm_tab[i]->strm_mgr_obj->intf_fxns;
+		status = (*intf_fxns->pfn_chnl_get_info) (strm_tab[i]->chnl_obj,
+							  &chnl_info_obj);
+		if (DSP_FAILED(status)) {
+			break;
+		} else {
+			if (chnl_info_obj.cio_cs > 0)
+				*pmask |= (1 << i);
+
+		}
+	}
+	if (DSP_SUCCEEDED(status) && utimeout > 0 && *pmask == 0) {
+		/* Non-zero timeout */
+		sync_events = kmalloc(nStrms * sizeof(struct sync_object *),
+								GFP_KERNEL);
+
+		if (sync_events == NULL) {
+			status = -ENOMEM;
+		} else {
+			for (i = 0; i < nStrms; i++) {
+				intf_fxns =
+				    strm_tab[i]->strm_mgr_obj->intf_fxns;
+				status = (*intf_fxns->pfn_chnl_get_info)
+				    (strm_tab[i]->chnl_obj, &chnl_info_obj);
+				if (DSP_FAILED(status))
+					break;
+				else
+					sync_events[i] =
+					    chnl_info_obj.sync_event;
+
+			}
+		}
+		if (DSP_SUCCEEDED(status)) {
+			status =
+			    sync_wait_on_multiple_events(sync_events, nStrms,
+							 utimeout, &index);
+			if (DSP_SUCCEEDED(status)) {
+				/* Since we waited on the event, we have to
+				 * reset it */
+				sync_set_event(sync_events[index]);
+				*pmask = 1 << index;
+			}
+		}
+	}
+func_end:
+	kfree(sync_events);
+
+	DBC_ENSURE((DSP_SUCCEEDED(status) && (*pmask != 0 || utimeout == 0)) ||
+		   (DSP_FAILED(status) && *pmask == 0));
+
+	return status;
+}
+
+/*
+ *  ======== delete_strm ========
+ *  Purpose:
+ *      Frees the resources allocated for a stream.
+ */
+static int delete_strm(struct strm_object *hStrm)
+{
+	struct bridge_drv_interface *intf_fxns;
+	int status = 0;
+
+	if (hStrm) {
+		if (hStrm->chnl_obj) {
+			intf_fxns = hStrm->strm_mgr_obj->intf_fxns;
+			/* Channel close can fail only if the channel handle
+			 * is invalid. */
+			status = (*intf_fxns->pfn_chnl_close) (hStrm->chnl_obj);
+			/* Free all SM address translator resources */
+			if (DSP_SUCCEEDED(status)) {
+				if (hStrm->xlator) {
+					/* force free */
+					(void)cmm_xlator_delete(hStrm->xlator,
+								true);
+				}
+			}
+		}
+		kfree(hStrm);
+	} else {
+		status = -EFAULT;
+	}
+	return status;
+}
+
+/*
+ *  ======== delete_strm_mgr ========
+ *  Purpose:
+ *      Frees stream manager.
+ */
+static void delete_strm_mgr(struct strm_mgr *strm_mgr_obj)
+{
+	if (strm_mgr_obj)
+		kfree(strm_mgr_obj);
+}