[IA64-SGI] Remove Altix I/O code (ready for re-org).

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/sn/Makefile

@@ -9,4 +9,4 @@
 # Makefile for the sn ia64 subplatform
 #
 
-obj-y += kernel/ io/
+obj-y += kernel/

arch/ia64/sn/io/Makefile

-# arch/ia64/sn/io/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn io routines.
-#
-
-obj-y += xswitch.o cdl.o snia_if.o \
-	 io.o machvec/ drivers/ platform_init/ sn2/ hwgfs/

arch/ia64/sn/io/cdl.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <asm/sn/sgi.h>
-#include <asm/io.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/pci/pic.h>
-#include "asm/sn/ioerror_handling.h"
-#include <asm/sn/xtalk/xbow.h>
-
-/* these get called directly in cdl_add_connpt in fops bypass hack */
-extern int xbow_attach(vertex_hdl_t);
-extern int pic_attach(vertex_hdl_t);
-
-/*
- *    cdl: Connection and Driver List
- *
- *	We are not porting this to Linux.  Devices are registered via 
- *	the normal Linux PCI layer.  This is a very simplified version 
- *	of cdl that will allow us to register and call our very own 
- *	IO Infrastructure Drivers e.g. pcibr.
- */
-
-#define MAX_SGI_IO_INFRA_DRVR 5
-
-static struct cdl sgi_infrastructure_drivers[MAX_SGI_IO_INFRA_DRVR] =
-{
-	{ PIC_WIDGET_PART_NUM_BUS0,  PIC_WIDGET_MFGR_NUM,   pic_attach /* &pcibr_fops */},
-	{ PIC_WIDGET_PART_NUM_BUS1,  PIC_WIDGET_MFGR_NUM,   pic_attach /* &pcibr_fops */},
-	{ XXBOW_WIDGET_PART_NUM,   XXBOW_WIDGET_MFGR_NUM,   xbow_attach /* &xbow_fops */},
-	{ XBOW_WIDGET_PART_NUM,    XBOW_WIDGET_MFGR_NUM,    xbow_attach /* &xbow_fops */},
-	{ PXBOW_WIDGET_PART_NUM,   XXBOW_WIDGET_MFGR_NUM,   xbow_attach /* &xbow_fops */},
-};
-
-/*
- * cdl_add_connpt: We found a device and it's connect point.  Call the 
- * attach routine of that driver.
- *
- * May need support for pciba registration here ...
- *
- * This routine use to create /hw/.id/pci/.../.. that links to 
- * /hw/module/006c06/Pbrick/xtalk/15/pci/<slotnum> .. do we still need 
- * it?  The specified driver attach routine does not reference these 
- * vertices.
- */
-int
-cdl_add_connpt(int part_num, int mfg_num, 
-	       vertex_hdl_t connpt, int drv_flags)
-{
-	int i;
-	
-	/*
-	 * Find the driver entry point and call the attach routine.
-	 */
-	for (i = 0; i < MAX_SGI_IO_INFRA_DRVR; i++) {
-		if ( (part_num == sgi_infrastructure_drivers[i].part_num) &&
-		   ( mfg_num == sgi_infrastructure_drivers[i].mfg_num) ) {
-			/*
-			 * Call the device attach routines.
-			 */
-			if (sgi_infrastructure_drivers[i].attach) {
-			    return(sgi_infrastructure_drivers[i].attach(connpt));
-			}
-		} else {
-			continue;
-		}
-	}	
-
-	/* printk("WARNING: cdl_add_connpt: Driver not found for part_num 0x%x mfg_num 0x%x\n", part_num, mfg_num); */
-
-	return (0);
-}

arch/ia64/sn/io/drivers/Makefile

-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 io routines.
-
-obj-y				+= ioconfig_bus.o

arch/ia64/sn/io/drivers/ioconfig_bus.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- *  ioconfig_bus - SGI's Persistent PCI Bus Numbering.
- *
- * Copyright (C) 1992-1997, 2000-2003 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <linux/pci.h>
-
-#include <asm/uaccess.h>
-#include <asm/sn/sgi.h>
-#include <asm/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/ioconfig_bus.h>
-
-#define SGI_IOCONFIG_BUS "SGI-PERSISTENT PCI BUS NUMBERING"
-#define SGI_IOCONFIG_BUS_VERSION "1.0"
-
-/*
- * Some Global definitions.
- */
-static vertex_hdl_t ioconfig_bus_handle;
-static unsigned long ioconfig_bus_debug;
-static struct ioconfig_parm parm;
-
-#ifdef IOCONFIG_BUS_DEBUG
-#define DBG(x...)	printk(x)
-#else
-#define DBG(x...)
-#endif
-
-static u64 ioconfig_activated;
-static char ioconfig_kernopts[128];
-
-/*
- * For debugging purpose .. hardcode a table ..
- */
-struct  ascii_moduleid *ioconfig_bus_table;
-
-static int free_entry;
-static int new_entry;
-
-int next_basebus_number;
-
-void
-ioconfig_get_busnum(char *io_moduleid, int *bus_num)
-{
-	struct	ascii_moduleid  *temp;
-	int index;
-
-	DBG("ioconfig_get_busnum io_moduleid %s\n", io_moduleid);
-
-	*bus_num = -1;
-	temp = ioconfig_bus_table;
-	if (!ioconfig_bus_table)
-		return;
-	for (index = 0; index < free_entry; temp++, index++) {
-		if ( (io_moduleid[0] == temp->io_moduleid[0]) &&
-		     (io_moduleid[1] == temp->io_moduleid[1]) &&
-		     (io_moduleid[2] == temp->io_moduleid[2]) &&
-		     (io_moduleid[4] == temp->io_moduleid[4]) &&
-		     (io_moduleid[5] == temp->io_moduleid[5]) ) {
-			*bus_num = index * 0x10;
-			return;
-		}
-	}
-
-	/*
-	 * New IO Brick encountered.
-	 */
-	if (((int)io_moduleid[0]) == 0) {
-		DBG("ioconfig_get_busnum: Invalid Module Id given %s\n", io_moduleid);
-		return;
-	}
-
-	io_moduleid[3] = '#';
-	strcpy((char *)&(ioconfig_bus_table[free_entry].io_moduleid), io_moduleid);
-	*bus_num = free_entry * 0x10;
-	free_entry++;
-}
-
-static void
-dump_ioconfig_table(void)
-{
-
-	int index = 0;
-	struct ascii_moduleid *temp;
-
-	temp = ioconfig_bus_table;
-	if (!temp) {
-		DBG("ioconfig_bus_table tabel empty\n");
-		return;
-	}
-	while (index < free_entry) {
-		DBG("ASSCI Module ID %s\n", temp->io_moduleid);
-		temp++;
-		index++;
-	}
-}
-
-/*
- * nextline
- *	This routine returns the nextline in the buffer.
- */
-int nextline(char *buffer, char **next, char *line)
-{
-
-	char *temp;
-
-	if (buffer[0] == 0x0) {
-		return(0);
-	}
-
-	temp = buffer;
-	while (*temp != 0) {
-		*line = *temp;
-		if (*temp != '\n'){
-			*line = *temp;
-			temp++; line++;
-		} else
-			break;
-	}
-
-	if (*temp == 0)
-		*next = temp;
-	else
-		*next = ++temp;
-
-	return(1);
-}
-
-/*
- * build_pcibus_name
- *	This routine parses the ioconfig contents read into
- *	memory by ioconfig command in EFI and builds the
- *	persistent pci bus naming table.
- */
-int
-build_moduleid_table(char *file_contents, struct ascii_moduleid *table)
-{
-	/*
-	 * Read the whole file into memory.
-	 */
-	int rc;
-	char *name;
-	char *temp;
-	char *next;
-	char *curr;
-	char *line;
-	struct ascii_moduleid *moduleid;
-
-	line = kmalloc(256, GFP_KERNEL);
-	name = kmalloc(125, GFP_KERNEL);
-	if (!line || !name) {
-		if (line)
-			kfree(line);
-		if (name)
-			kfree(name);
-		printk("build_moduleid_table(): Unabled to allocate memmory");
-		return -ENOMEM;
-	}
-
-	memset(line, 0,256);
-	memset(name, 0, 125);
-	moduleid = table;
-	curr = file_contents;
-	while (nextline(curr, &next, line)){
-
-		DBG("curr 0x%lx next 0x%lx\n", curr, next);
-
-		temp = line;
-		/*
-		 * Skip all leading Blank lines ..
-		 */
-		while (isspace(*temp))
-			if (*temp != '\n')
-				temp++;
-			else
-				break;
-
-		if (*temp == '\n') {
-			curr = next;
-			memset(line, 0, 256);
-			continue;
-		}
- 
-		/*
-		 * Skip comment lines
-		 */
-		if (*temp == '#') {
-			curr = next;
-			memset(line, 0, 256);
-			continue;
-		}
-
-		/*
-		 * Get the next free entry in the table.
-		 */
-		rc = sscanf(temp, "%s", name);
-		strcpy(&moduleid->io_moduleid[0], name);
-		DBG("Found %s\n", name);
-		moduleid++;
-		free_entry++;
-		curr = next;
-		memset(line, 0, 256);
-	}
-
-	new_entry = free_entry;
-	kfree(line);
-	kfree(name);
-
-	return 0;
-}
-
-int
-ioconfig_bus_init(void)
-{
-
-	DBG("ioconfig_bus_init called.\n");
-
-	ioconfig_bus_table = kmalloc( 512, GFP_KERNEL );
-	if (!ioconfig_bus_table) {
-		printk("ioconfig_bus_init : cannot allocate memory\n");
-		return -1;
-	}
-
-	memset(ioconfig_bus_table, 0, 512);
-
-	/*
-	 * If ioconfig options are given on the bootline .. take it.
-	 */
-	if (*ioconfig_kernopts != '\0') {
-		/*
-		 * ioconfig="..." kernel options given.
-		 */
-		DBG("ioconfig_bus_init: Kernel Options given.\n");
-		if ( build_moduleid_table((char *)ioconfig_kernopts, ioconfig_bus_table) < 0 )
-			return -1;
-		(void) dump_ioconfig_table();
-	}
-	return 0;
-}
-
-void
-ioconfig_bus_new_entries(void)
-{
-	int index;
-	struct ascii_moduleid *temp;
-
-	if ((ioconfig_activated) && (free_entry > new_entry)) {
-		printk("### Please add the following new IO Bricks Module ID \n");
-		printk("### to your Persistent Bus Numbering Config File\n");
-	} else
-		return;
-
-	index = new_entry;
-	if (!ioconfig_bus_table) {
-		printk("ioconfig_bus_table table is empty\n");
-		return;
-	}
-	temp = &ioconfig_bus_table[index];
-        while (index < free_entry) {
-                printk("%s\n", (char *)temp);
-		temp++;
-                index++;
-        }
-	printk("### End\n");
-
-}
-static int ioconfig_bus_ioctl(struct inode * inode, struct file * file,
-        unsigned int cmd, unsigned long arg)
-{
-	/*
-	 * Copy in the parameters.
-	 */
-	if (copy_from_user(&parm, (char *)arg, sizeof(struct ioconfig_parm)))
-		return -EFAULT;
-	parm.number = free_entry - new_entry;
-	parm.ioconfig_activated = ioconfig_activated;
-	if (copy_to_user((char *)arg, &parm, sizeof(struct ioconfig_parm)))
-		return -EFAULT;
-
-	if (!ioconfig_bus_table)
-		return -EFAULT;
-
-	if (copy_to_user((char *)parm.buffer, &ioconfig_bus_table[new_entry], sizeof(struct  ascii_moduleid) * (free_entry - new_entry)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * ioconfig_bus_open - Opens the special device node "/dev/hw/.ioconfig_bus".
- */
-static int ioconfig_bus_open(struct inode * inode, struct file * filp)
-{
-	if (ioconfig_bus_debug) {
-        	DBG("ioconfig_bus_open called.\n");
-	}
-
-        return(0);
-
-}
-
-/*
- * ioconfig_bus_close - Closes the special device node "/dev/hw/.ioconfig_bus".
- */
-static int ioconfig_bus_close(struct inode * inode, struct file * filp)
-{
-
-	if (ioconfig_bus_debug) {
-        	DBG("ioconfig_bus_close called.\n");
-	}
-
-        return(0);
-}
-
-struct file_operations ioconfig_bus_fops = {
-	.ioctl	= ioconfig_bus_ioctl,
-	.open	= ioconfig_bus_open,	/* open */
-	.release=ioconfig_bus_close	/* release */
-};
-
-
-/*
- * init_ifconfig_bus() - Boot time initialization.  Ensure that it is called 
- *	after hwgfs has been initialized.
- *
- */
-int init_ioconfig_bus(void)
-{
-	ioconfig_bus_handle = hwgraph_register(hwgraph_root, ".ioconfig_bus",
-		        0, 0,
-			0, 0,
-			S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP, 0, 0,
-			&ioconfig_bus_fops, NULL);
-
-	if (ioconfig_bus_handle == NULL) {
-		panic("Unable to create SGI PERSISTENT BUS NUMBERING Driver.\n");
-	}
-
-	return 0;
-}
-
-static int __init ioconfig_bus_setup (char *str)
-{
-
-	char *temp;
-
-	DBG("ioconfig_bus_setup: Kernel Options %s\n", str);
-
-	temp = (char *)ioconfig_kernopts;
-	memset(temp, 0, 128);
-	while ( (*str != '\0') && !isspace (*str) ) {
-		if (*str == ',') {
-			*temp = '\n';
-			temp++;
-			str++;
-			continue;
-		}
-		*temp = *str;
-		temp++;
-		str++;
-	}
-
-	return(0);
-		
-}
-__setup("ioconfig=", ioconfig_bus_setup);

arch/ia64/sn/io/hwgfs/Makefile

-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 io routines.
-
-obj-y		+= hcl.o labelcl.o hcl_util.o ramfs.o interface.o

arch/ia64/sn/io/hwgfs/hcl_util.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992-1997,2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <asm/sn/sgi.h>
-#include <asm/io.h>
-#include <asm/sn/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/hwgfs.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/hcl_util.h>
-#include <asm/sn/nodepda.h>
-
-static vertex_hdl_t hwgraph_all_cnodes = GRAPH_VERTEX_NONE;
-extern vertex_hdl_t hwgraph_root;
-static vertex_hdl_t hwgraph_all_cpuids = GRAPH_VERTEX_NONE;
-extern int maxcpus;
-
-void
-mark_cpuvertex_as_cpu(vertex_hdl_t vhdl, cpuid_t cpuid)
-{
-	char cpuid_buffer[10];
-
-	if (cpuid == CPU_NONE)
-		return;
-
-	if (hwgraph_all_cpuids == GRAPH_VERTEX_NONE) {
-		(void)hwgraph_path_add( hwgraph_root,
-					EDGE_LBL_CPUNUM,
-					&hwgraph_all_cpuids);
-	}
-
-	sprintf(cpuid_buffer, "%ld", cpuid);
-	(void)hwgraph_edge_add( hwgraph_all_cpuids, vhdl, cpuid_buffer);
-}
-
-/*
-** Return the "master" for a given vertex.  A master vertex is a
-** controller or adapter or other piece of hardware that the given
-** vertex passes through on the way to the rest of the system.
-*/
-vertex_hdl_t
-device_master_get(vertex_hdl_t vhdl)
-{
-	graph_error_t rc;
-	vertex_hdl_t master;
-
-	rc = hwgraph_edge_get(vhdl, EDGE_LBL_MASTER, &master);
-	if (rc == GRAPH_SUCCESS)
-		return(master);
-	else
-		return(GRAPH_VERTEX_NONE);
-}
-
-/*
-** Set the master for a given vertex.
-** Returns 0 on success, non-0 indicates failure
-*/
-int
-device_master_set(vertex_hdl_t vhdl, vertex_hdl_t master)
-{
-	graph_error_t rc;
-
-	rc = hwgraph_edge_add(vhdl, master, EDGE_LBL_MASTER);
-	return(rc != GRAPH_SUCCESS);
-}
-
-
-/*
-** Return the compact node id of the node that ultimately "owns" the specified
-** vertex.  In order to do this, we walk back through masters and connect points
-** until we reach a vertex that represents a node.
-*/
-cnodeid_t
-master_node_get(vertex_hdl_t vhdl)
-{
-	cnodeid_t cnodeid;
-	vertex_hdl_t master;
-
-	for (;;) {
-		cnodeid = nodevertex_to_cnodeid(vhdl);
-		if (cnodeid != CNODEID_NONE)
-			return(cnodeid);
-
-		master = device_master_get(vhdl);
-
-		/* Check for exceptional cases */
-		if (master == vhdl) {
-			/* Since we got a reference to the "master" thru
-			 * device_master_get() we should decrement
-			 * its reference count by 1
-			 */
-			return(CNODEID_NONE);
-		}
-
-		if (master == GRAPH_VERTEX_NONE) {
-			master = hwgraph_connectpt_get(vhdl);
-			if ((master == GRAPH_VERTEX_NONE) ||
-			    (master == vhdl)) {
-				return(CNODEID_NONE);
-			}
-		}
-
-		vhdl = master;
-	}
-}
-
-
-/*
-** If the specified device represents a node, return its
-** compact node ID; otherwise, return CNODEID_NONE.
-*/
-cnodeid_t
-nodevertex_to_cnodeid(vertex_hdl_t vhdl)
-{
-	int rv = 0;
-	arbitrary_info_t cnodeid = CNODEID_NONE;
-
-	rv = labelcl_info_get_LBL(vhdl, INFO_LBL_CNODEID, NULL, &cnodeid);
-
-	return((cnodeid_t)cnodeid);
-}
-
-void
-mark_nodevertex_as_node(vertex_hdl_t vhdl, cnodeid_t cnodeid)
-{
-	if (cnodeid == CNODEID_NONE)
-		return;
-
-	cnodeid_to_vertex(cnodeid) = vhdl;
-	labelcl_info_add_LBL(vhdl, INFO_LBL_CNODEID, INFO_DESC_EXPORT, 
-		(arbitrary_info_t)cnodeid);
-
-	{
-		char cnodeid_buffer[10];
-
-		if (hwgraph_all_cnodes == GRAPH_VERTEX_NONE) {
-			(void)hwgraph_path_add( hwgraph_root,
-						EDGE_LBL_NODENUM,
-						&hwgraph_all_cnodes);
-		}
-
-		sprintf(cnodeid_buffer, "%d", cnodeid);
-		(void)hwgraph_edge_add( hwgraph_all_cnodes,
-					vhdl,
-					cnodeid_buffer);
-		HWGRAPH_DEBUG(__FILE__, __FUNCTION__, __LINE__, hwgraph_all_cnodes, NULL, "Creating path vhdl1\n");
-	}
-}
-
-/*
-** dev_to_name converts a vertex_hdl_t into a canonical name.  If the vertex_hdl_t
-** represents a vertex in the hardware graph, it is converted in the
-** normal way for vertices.  If the vertex_hdl_t is an old vertex_hdl_t (one which
-** does not represent a hwgraph vertex), we synthesize a name based
-** on major/minor number.
-**
-** Usually returns a pointer to the original buffer, filled in as
-** appropriate.  If the buffer is too small to hold the entire name,
-** or if anything goes wrong while determining the name, dev_to_name
-** returns "UnknownDevice".
-*/
-char *
-dev_to_name(vertex_hdl_t dev, char *buf, uint buflen)
-{
-        return(vertex_to_name(dev, buf, buflen));
-}
-

arch/ia64/sn/io/hwgfs/interface.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2003 Silicon Graphics, Inc.  All Rights Reserved.
- *
- *  Portions based on Adam Richter's smalldevfs and thus
- *  Copyright 2002-2003  Yggdrasil Computing, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/namei.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <asm/sn/hwgfs.h>
-
-
-extern struct vfsmount *hwgfs_vfsmount;
-
-static int
-walk_parents_mkdir(
-	const char		**path,
-	struct nameidata	*nd,
-	int			is_dir)
-{
-	char			*slash;
-	char			buf[strlen(*path)+1];
-	int			error;
-
-	while ((slash = strchr(*path, '/')) != NULL) {
-		int len = slash - *path;
-		memcpy(buf, *path, len);
-		buf[len] = '\0';
-
-		error = path_walk(buf, nd);
-		if (unlikely(error))
-			return error;
-
-		nd->dentry = lookup_create(nd, is_dir);
-		nd->flags |= LOOKUP_PARENT;
-		if (IS_ERR(nd->dentry))
-			return PTR_ERR(nd->dentry);
-
-		if (!nd->dentry->d_inode)
-			error = vfs_mkdir(nd->dentry->d_parent->d_inode,
-					nd->dentry, 0755);
-		
-		up(&nd->dentry->d_parent->d_inode->i_sem);
-		if (unlikely(error))
-			return error;
-
-		*path += len + 1;
-	}
-
-	return 0;
-}
-
-/* On success, returns with parent_inode->i_sem taken. */
-static int
-hwgfs_decode(
-	hwgfs_handle_t		dir,
-	const char		*name,
-	int			is_dir,
-	struct inode		**parent_inode,
-	struct dentry		**dentry)
-{
-	struct nameidata	nd;
-	int			error;
-
-	if (!dir)
-		dir = hwgfs_vfsmount->mnt_sb->s_root;
-
-	memset(&nd, 0, sizeof(nd));
-	nd.flags = LOOKUP_PARENT;
-	nd.mnt = mntget(hwgfs_vfsmount);
-	nd.dentry = dget(dir);
-
-	error = walk_parents_mkdir(&name, &nd, is_dir);
-	if (unlikely(error))
-		return error;
-
-	error = path_walk(name, &nd);
-	if (unlikely(error))
-		return error;
-
-	*dentry = lookup_create(&nd, is_dir);
-
-	if (IS_ERR(*dentry))
-		return PTR_ERR(*dentry);
-	*parent_inode = (*dentry)->d_parent->d_inode;
-	return 0;
-}
-
-static int
-path_len(
-	struct dentry		*de,
-	struct dentry		*root)
-{
-	int			len = 0;
-
-	while (de != root) {
-		len += de->d_name.len + 1;	/* count the '/' */
-		de = de->d_parent;
-	}
-	return len;		/* -1 because we omit the leading '/',
-				   +1 because we include trailing '\0' */
-}
-
-int
-hwgfs_generate_path(
-	hwgfs_handle_t		de,
-	char			*path,
-	int			buflen)
-{
-	struct dentry		*hwgfs_root;
-	int			len;
-	char			*path_orig = path;
-
-	if (unlikely(de == NULL))
-		return -EINVAL;
-
-	hwgfs_root = hwgfs_vfsmount->mnt_sb->s_root;
-	if (unlikely(de == hwgfs_root))
-		return -EINVAL;
-
-	spin_lock(&dcache_lock);
-	len = path_len(de, hwgfs_root);
-	if (len > buflen) {
-		spin_unlock(&dcache_lock);
-		return -ENAMETOOLONG;
-	}
-
-	path += len - 1;
-	*path = '\0';
-
-	for (;;) {
-		path -= de->d_name.len;
-		memcpy(path, de->d_name.name, de->d_name.len);
-		de = de->d_parent;
-		if (de == hwgfs_root)
-			break;
-		*(--path) = '/';
-	}
-		
-	spin_unlock(&dcache_lock);
-	BUG_ON(path != path_orig);
-	return 0;
-}
-
-hwgfs_handle_t
-hwgfs_register(
-	hwgfs_handle_t		dir,
-	const char		*name,
-	unsigned int		flags,
-	unsigned int		major,
-	unsigned int		minor,
-	umode_t			mode,
-	void			*ops,
-	void			*info)
-{
-	dev_t			devnum = MKDEV(major, minor);
-	struct inode		*parent_inode;
-	struct dentry		*dentry;
-	int			error;
-
-	error = hwgfs_decode(dir, name, 0, &parent_inode, &dentry);
-	if (likely(!error)) {
-		error = vfs_mknod(parent_inode, dentry, mode, devnum);
-		if (likely(!error)) {
-			/*
-			 * Do this inside parents i_sem to avoid racing
-			 * with lookups.
-			 */
-			if (S_ISCHR(mode))
-				dentry->d_inode->i_fop = ops;
-			dentry->d_fsdata = info;
-			up(&parent_inode->i_sem);
-		} else {
-			up(&parent_inode->i_sem);
-			dput(dentry);
-			dentry = NULL;
-                }
-	}
-
-	return dentry;
-}
-
-int
-hwgfs_mk_symlink(
-	hwgfs_handle_t		dir,
-	const char		*name,
-	unsigned int		flags,
-	const char		*link,
-	hwgfs_handle_t		*handle,
-	void			*info)
-{
-	struct inode		*parent_inode;
-	struct dentry		*dentry;
-	int			error;
-
-	error = hwgfs_decode(dir, name, 0, &parent_inode, &dentry);
-	if (likely(!error)) {
-		error = vfs_symlink(parent_inode, dentry, link, S_IALLUGO);
-		dentry->d_fsdata = info;
-		if (handle)
-			*handle = dentry;
-		up(&parent_inode->i_sem);
-		/* dput(dentry); */
-	}
-	return error;
-}
-
-hwgfs_handle_t
-hwgfs_mk_dir(
-	hwgfs_handle_t		dir,
-	const char		*name,
-	void			*info)
-{
-	struct inode		*parent_inode;
-	struct dentry		*dentry;
-	int			error;
-
-	error = hwgfs_decode(dir, name, 1, &parent_inode, &dentry);
-	if (likely(!error)) {
-		error = vfs_mkdir(parent_inode, dentry, 0755);
-		up(&parent_inode->i_sem);
-
-		if (unlikely(error)) {
-			dput(dentry);
-			dentry = NULL;
-		} else {
-			dentry->d_fsdata = info;
-		}
-	}
-	return dentry;
-}
-
-void
-hwgfs_unregister(
-	hwgfs_handle_t		de)
-{
-	struct inode		*parent_inode = de->d_parent->d_inode;
-
-	if (S_ISDIR(de->d_inode->i_mode))
-		vfs_rmdir(parent_inode, de);
-	else
-		vfs_unlink(parent_inode, de);
-}
-
-/* XXX: this function is utterly bogus.  Every use of it is racy and the
-        prototype is stupid.  You have been warned.  --hch.  */
-hwgfs_handle_t
-hwgfs_find_handle(
-	hwgfs_handle_t		base,
-	const char		*name,
-	unsigned int		major,		/* IGNORED */
-	unsigned int		minor,		/* IGNORED */
-	char			type,		/* IGNORED */
-	int			traverse_symlinks)
-{
-	struct dentry		*dentry = NULL;
-	struct nameidata	nd;
-	int			error;
-
-	BUG_ON(*name=='/');
-
-	memset(&nd, 0, sizeof(nd));
-
-	nd.mnt = mntget(hwgfs_vfsmount);
-	nd.dentry = dget(base ? base : hwgfs_vfsmount->mnt_sb->s_root);
-	nd.flags = (traverse_symlinks ? LOOKUP_FOLLOW : 0);
-
-	error = path_walk(name, &nd);
-	if (likely(!error)) {
-		dentry = nd.dentry;
-		path_release(&nd);		/* stale data from here! */
-	}
-
-	return dentry;
-}
-
-hwgfs_handle_t
-hwgfs_get_parent(
-	hwgfs_handle_t		de)
-{
-	struct dentry		*parent;
-
-	spin_lock(&de->d_lock);
-	parent = de->d_parent;
-	spin_unlock(&de->d_lock);
-
-	return parent;
-}
-
-int
-hwgfs_set_info(
-	hwgfs_handle_t		de,
-	void			*info)
-{
-	if (unlikely(de == NULL))
-		return -EINVAL;
-	de->d_fsdata = info;
-	return 0;
-}
-
-void *
-hwgfs_get_info(
-	hwgfs_handle_t		de)
-{
-	return de->d_fsdata;
-}
-
-EXPORT_SYMBOL(hwgfs_generate_path);
-EXPORT_SYMBOL(hwgfs_register);
-EXPORT_SYMBOL(hwgfs_unregister);
-EXPORT_SYMBOL(hwgfs_mk_symlink);
-EXPORT_SYMBOL(hwgfs_mk_dir);
-EXPORT_SYMBOL(hwgfs_find_handle);
-EXPORT_SYMBOL(hwgfs_get_parent);
-EXPORT_SYMBOL(hwgfs_set_info);
-EXPORT_SYMBOL(hwgfs_get_info);

arch/ia64/sn/io/hwgfs/ramfs.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2003 Silicon Graphics, Inc.  All Rights Reserved.
- *
- *  Mostly shameless copied from Linus Torvalds' ramfs and thus
- *  Copyright (C) 2000 Linus Torvalds.
- *                2000 Transmeta Corp.
- */
-
-#include <linux/module.h>
-#include <linux/backing-dev.h>
-#include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <asm/uaccess.h>
-
-/* some random number */
-#define HWGFS_MAGIC	0x12061983
-
-static struct super_operations hwgfs_ops;
-static struct address_space_operations hwgfs_aops;
-static struct file_operations hwgfs_file_operations;
-static struct inode_operations hwgfs_file_inode_operations;
-static struct inode_operations hwgfs_dir_inode_operations;
-
-static struct backing_dev_info hwgfs_backing_dev_info = {
-	.ra_pages       = 0,	/* No readahead */
-	.memory_backed  = 1,	/* Does not contribute to dirty memory */
-};
-
-static struct inode *hwgfs_get_inode(struct super_block *sb, int mode, dev_t dev)
-{
-	struct inode * inode = new_inode(sb);
-
-	if (inode) {
-		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_mapping->a_ops = &hwgfs_aops;
-		inode->i_mapping->backing_dev_info = &hwgfs_backing_dev_info;
-		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-		switch (mode & S_IFMT) {
-		default:
-			init_special_inode(inode, mode, dev);
-			break;
-		case S_IFREG:
-			inode->i_op = &hwgfs_file_inode_operations;
-			inode->i_fop = &hwgfs_file_operations;
-			break;
-		case S_IFDIR:
-			inode->i_op = &hwgfs_dir_inode_operations;
-			inode->i_fop = &simple_dir_operations;
-			inode->i_nlink++;
-			break;
-		case S_IFLNK:
-			inode->i_op = &page_symlink_inode_operations;
-			break;
-		}
-	}
-	return inode;
-}
-
-static int hwgfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
-{
-	struct inode * inode = hwgfs_get_inode(dir->i_sb, mode, dev);
-	int error = -ENOSPC;
-
-	if (inode) {
-		d_instantiate(dentry, inode);
-		dget(dentry);		/* Extra count - pin the dentry in core */
-		error = 0;
-	}
-	return error;
-}
-
-static int hwgfs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
-{
-	return hwgfs_mknod(dir, dentry, mode | S_IFDIR, 0);
-}
-
-static int hwgfs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *unused)
-{
-	return hwgfs_mknod(dir, dentry, mode | S_IFREG, 0);
-}
-
-static int hwgfs_symlink(struct inode * dir, struct dentry *dentry, const char * symname)
-{
-	struct inode *inode;
-	int error = -ENOSPC;
-
-	inode = hwgfs_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0);
-	if (inode) {
-		int l = strlen(symname)+1;
-		error = page_symlink(inode, symname, l);
-		if (!error) {
-			d_instantiate(dentry, inode);
-			dget(dentry);
-		} else
-			iput(inode);
-	}
-	return error;
-}
-
-static struct address_space_operations hwgfs_aops = {
-	.readpage	= simple_readpage,
-	.prepare_write	= simple_prepare_write,
-	.commit_write	= simple_commit_write
-};
-
-static struct file_operations hwgfs_file_operations = {
-	.read		= generic_file_read,
-	.write		= generic_file_write,
-	.mmap		= generic_file_mmap,
-	.fsync		= simple_sync_file,
-	.sendfile	= generic_file_sendfile,
-};
-
-static struct inode_operations hwgfs_file_inode_operations = {
-	.getattr	= simple_getattr,
-};
-
-static struct inode_operations hwgfs_dir_inode_operations = {
-	.create		= hwgfs_create,
-	.lookup		= simple_lookup,
-	.link		= simple_link,
-	.unlink		= simple_unlink,
-	.symlink	= hwgfs_symlink,
-	.mkdir		= hwgfs_mkdir,
-	.rmdir		= simple_rmdir,
-	.mknod		= hwgfs_mknod,
-	.rename		= simple_rename,
-};
-
-static struct super_operations hwgfs_ops = {
-	.statfs		= simple_statfs,
-	.drop_inode	= generic_delete_inode,
-};
-
-static int hwgfs_fill_super(struct super_block * sb, void * data, int silent)
-{
-	struct inode * inode;
-	struct dentry * root;
-
-	sb->s_blocksize = PAGE_CACHE_SIZE;
-	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-	sb->s_magic = HWGFS_MAGIC;
-	sb->s_op = &hwgfs_ops;
-	inode = hwgfs_get_inode(sb, S_IFDIR | 0755, 0);
-	if (!inode)
-		return -ENOMEM;
-
-	root = d_alloc_root(inode);
-	if (!root) {
-		iput(inode);
-		return -ENOMEM;
-	}
-	sb->s_root = root;
-	return 0;
-}
-
-static struct super_block *hwgfs_get_sb(struct file_system_type *fs_type,
-	int flags, const char *dev_name, void *data)
-{
-	return get_sb_single(fs_type, flags, data, hwgfs_fill_super);
-}
-
-static struct file_system_type hwgfs_fs_type = {
-	.owner		= THIS_MODULE,
-	.name           = "hwgfs",
-	.get_sb         = hwgfs_get_sb,
-	.kill_sb        = kill_litter_super,
-};
-
-struct vfsmount *hwgfs_vfsmount;
-
-int __init init_hwgfs_fs(void)
-{
-	int error;
-
-	error = register_filesystem(&hwgfs_fs_type);
-	if (error)
-		return error;
-
-	hwgfs_vfsmount = kern_mount(&hwgfs_fs_type);
-	if (IS_ERR(hwgfs_vfsmount))
-		goto fail;
-	return 0;
-
-fail:
-	unregister_filesystem(&hwgfs_fs_type);
-	return PTR_ERR(hwgfs_vfsmount);
-}
-
-static void __exit exit_hwgfs_fs(void)
-{
-	unregister_filesystem(&hwgfs_fs_type);
-}
-
-MODULE_LICENSE("GPL");
-
-module_init(init_hwgfs_fs)
-module_exit(exit_hwgfs_fs)

arch/ia64/sn/io/machvec/Makefile

-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 io routines.
-
-obj-y				+= pci.o pci_dma.o pci_bus_cvlink.o iomv.o

arch/ia64/sn/io/machvec/iomv.c

-/* 
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/module.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/sn/simulator.h>
-#include <asm/sn/pda.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/sn2/shub_mmr.h>
-
-/**
- * sn_io_addr - convert an in/out port to an i/o address
- * @port: port to convert
- *
- * Legacy in/out instructions are converted to ld/st instructions
- * on IA64.  This routine will convert a port number into a valid 
- * SN i/o address.  Used by sn_in*() and sn_out*().
- */
-void *
-sn_io_addr(unsigned long port)
-{
-	if (!IS_RUNNING_ON_SIMULATOR()) {
-		/* On sn2, legacy I/O ports don't point at anything */
-		if (port < 64*1024)
-			return 0;
-		return( (void *)  (port | __IA64_UNCACHED_OFFSET));
-	} else {
-		/* but the simulator uses them... */
-		unsigned long io_base;
-		unsigned long addr;
- 
-		/*
- 		 * word align port, but need more than 10 bits
- 		 * for accessing registers in bedrock local block
- 		 * (so we don't do port&0xfff)
- 		 */
-		if ((port >= 0x1f0 && port <= 0x1f7) ||
-			port == 0x3f6 || port == 0x3f7) {
-			io_base = (0xc000000fcc000000 | ((unsigned long)get_nasid() << 38));
-			addr = io_base | ((port >> 2) << 12) | (port & 0xfff);
-		} else {
-			addr = __ia64_get_io_port_base() | ((port >> 2) << 2);
-		}
-		return(void *) addr;
-	}
-}
-
-EXPORT_SYMBOL(sn_io_addr);
-
-/**
- * sn_mmiob - I/O space memory barrier
- *
- * Acts as a memory mapped I/O barrier for platforms that queue writes to 
- * I/O space.  This ensures that subsequent writes to I/O space arrive after
- * all previous writes.  For most ia64 platforms, this is a simple
- * 'mf.a' instruction.  For other platforms, mmiob() may have to read
- * a chipset register to ensure ordering.
- *
- * On SN2, we wait for the PIO_WRITE_STATUS SHub register to clear.
- * See PV 871084 for details about the WAR about zero value.
- *
- */
-void
-sn_mmiob (void)
-{
-	while ((((volatile unsigned long) (*pda->pio_write_status_addr)) & SH_PIO_WRITE_STATUS_0_PENDING_WRITE_COUNT_MASK) != 
-				SH_PIO_WRITE_STATUS_0_PENDING_WRITE_COUNT_MASK)
-		cpu_relax();
-}
-EXPORT_SYMBOL(sn_mmiob);

arch/ia64/sn/io/machvec/pci.c

-/* 
- * SNI64 specific PCI support for SNI IO.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 1997, 1998, 2000-2003 Silicon Graphics, Inc.  All rights reserved.
- */
-#include <asm/sn/hcl.h>
-#include <asm/sn/pci/pcibr_private.h>
-
-/*
- * These routines are only used during sn_pci_init for probing each bus, and
- * can probably be removed with a little more cleanup now that the SAL routines
- * work on sn2.
- */
-
-extern vertex_hdl_t devfn_to_vertex(unsigned char bus, unsigned char devfn);
-
-int sn_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val)
-{
-	unsigned long res = 0;
-	vertex_hdl_t device_vertex;
-
-	device_vertex = devfn_to_vertex(bus->number, devfn);
-
-	if (!device_vertex)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	res = pciio_config_get(device_vertex, (unsigned)where, size);
-	*val = (u32)res;
-	return PCIBIOS_SUCCESSFUL;
-}
-
-int sn_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
-{
-	vertex_hdl_t device_vertex;
-
-	device_vertex = devfn_to_vertex(bus->number, devfn);
-
-	if (!device_vertex)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	pciio_config_set(device_vertex, (unsigned)where, size, (uint64_t)val);
-	return PCIBIOS_SUCCESSFUL;
-}
-
-struct pci_ops sn_pci_ops = {
-	.read = sn_read_config,
-	.write = sn_write_config,
-};

arch/ia64/sn/io/platform_init/Makefile

-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 io routines.
-
-obj-y				+=  sgi_io_init.o

arch/ia64/sn/io/platform_init/sgi_io_init.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/config.h>
-#include <linux/slab.h>
-#include <linux/smp.h>
-#include <asm/sn/sgi.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/klconfig.h>
-#include <asm/sn/sn_private.h>
-#include <asm/sn/pda.h>
-
-extern void init_all_devices(void);
-extern void klhwg_add_all_modules(vertex_hdl_t);
-extern void klhwg_add_all_nodes(vertex_hdl_t);
-
-extern int init_hcl(void);
-extern vertex_hdl_t hwgraph_root;
-extern void io_module_init(void);
-extern int pci_bus_to_hcl_cvlink(void);
-
-nasid_t console_nasid = (nasid_t) - 1;
-char master_baseio_wid;
-
-nasid_t master_baseio_nasid;
-nasid_t master_nasid = INVALID_NASID;	/* This is the partition master nasid */
-
-/*
- * per_hub_init
- *
- * 	This code is executed once for each Hub chip.
- */
-static void __init
-per_hub_init(cnodeid_t cnode)
-{
-	nasid_t nasid;
-	nodepda_t *npdap;
-	ii_icmr_u_t ii_icmr;
-	ii_ibcr_u_t ii_ibcr;
-	ii_ilcsr_u_t ii_ilcsr;
-
-	nasid = cnodeid_to_nasid(cnode);
-
-	ASSERT(nasid != INVALID_NASID);
-	ASSERT(nasid_to_cnodeid(nasid) == cnode);
-
-	npdap = NODEPDA(cnode);
-
-	/* Disable the request and reply errors. */
-	REMOTE_HUB_S(nasid, IIO_IWEIM, 0xC000);
-
-	/*
-	 * Set the total number of CRBs that can be used.
-	 */
-	ii_icmr.ii_icmr_regval = 0x0;
-	ii_icmr.ii_icmr_fld_s.i_c_cnt = 0xf;
-	if (enable_shub_wars_1_1()) {
-		// Set bit one of ICMR to prevent II from sending interrupt for II bug.
-		ii_icmr.ii_icmr_regval |= 0x1;
-	}
-	REMOTE_HUB_S(nasid, IIO_ICMR, ii_icmr.ii_icmr_regval);
-
-	/*
-	 * Set the number of CRBs that both of the BTEs combined
-	 * can use minus 1.
-	 */
-	ii_ibcr.ii_ibcr_regval = 0x0;
-	ii_ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(nasid, IIO_LLP_CSR);
-	if (ii_ilcsr.ii_ilcsr_fld_s.i_llp_stat & LNK_STAT_WORKING) {
-		ii_ibcr.ii_ibcr_fld_s.i_count = 0x8;
-	} else {
-		/*
-		 * if the LLP is down, there is no attached I/O, so
-		 * give BTE all the CRBs.
-		 */
-		ii_ibcr.ii_ibcr_fld_s.i_count = 0x14;
-	}
-	REMOTE_HUB_S(nasid, IIO_IBCR, ii_ibcr.ii_ibcr_regval);
-
-	/*
-	 * Set CRB timeout to be 10ms.
-	 */
-	REMOTE_HUB_S(nasid, IIO_ICTP, 0xffffff);
-	REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
-
-	/* Initialize error interrupts for this hub. */
-	hub_error_init(cnode);
-}
-
-/*
- * This routine is responsible for the setup of all the IRIX hwgraph style
- * stuff that's been pulled into linux.  It's called by sn_pci_find_bios which
- * is called just before the generic Linux PCI layer does its probing (by 
- * platform_pci_fixup aka sn_pci_fixup).
- *
- * It is very IMPORTANT that this call is only made by the Master CPU!
- *
- */
-
-void __init
-sgi_master_io_infr_init(void)
-{
-	cnodeid_t cnode;
-
-	if (init_hcl() < 0) {	/* Sets up the hwgraph compatibility layer */
-		printk("sgi_master_io_infr_init: Cannot init hcl\n");
-		return;
-	}
-
-	/*
-	 * Initialize platform-dependent vertices in the hwgraph:
-	 *      module
-	 *      node
-	 *      cpu
-	 *      memory
-	 *      slot
-	 *      hub
-	 *      router
-	 *      xbow
-	 */
-
-	io_module_init();	/* Use to be called module_init() .. */
-	klhwg_add_all_modules(hwgraph_root);
-	klhwg_add_all_nodes(hwgraph_root);
-
-	for (cnode = 0; cnode < numionodes; cnode++)
-		per_hub_init(cnode);
-
-	/*
-	 *
-	 * Our IO Infrastructure drivers are in place .. 
-	 * Initialize the whole IO Infrastructure .. xwidget/device probes.
-	 *
-	 */
-	init_all_devices();
-	pci_bus_to_hcl_cvlink();
-}
-
-inline int
-check_nasid_equiv(nasid_t nasida, nasid_t nasidb)
-{
-	if ((nasida == nasidb)
-	    || (nasida == NODEPDA(nasid_to_cnodeid(nasidb))->xbow_peer))
-		return 1;
-	else
-		return 0;
-}
-
-int
-is_master_baseio_nasid_widget(nasid_t test_nasid, xwidgetnum_t test_wid)
-{
-	/*
-	 * If the widget numbers are different, we're not the master.
-	 */
-	if (test_wid != (xwidgetnum_t) master_baseio_wid) {
-		return 0;
-	}
-
-	/*
-	 * If the NASIDs are the same or equivalent, we're the master.
-	 */
-	if (check_nasid_equiv(test_nasid, master_baseio_nasid)) {
-		return 1;
-	} else {
-		return 0;
-	}
-}

arch/ia64/sn/io/sn2/Makefile

-# arch/ia64/sn/io/sn2/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 specific io routines.
-#
-
-obj-y += pcibr/ ml_SN_intr.o shub_intr.o shuberror.o shub.o bte_error.o \
-	 pic.o geo_op.o l1_command.o klconflib.o klgraph.o ml_SN_init.o \
-	 ml_iograph.o module.o pciio.o xbow.o xtalk.o shubio.o

arch/ia64/sn/io/sn2/bte_error.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/smp.h>
-#include <asm/sn/sgi.h>
-#include <asm/sn/io.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/sn_private.h>
-#include <asm/sn/klconfig.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/pci/pciio.h>
-#include <asm/sn/pci/pcibr.h>
-#include <asm/sn/xtalk/xtalk.h>
-#include <asm/sn/pci/pcibr_private.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/ioerror.h>
-#include <asm/sn/sn2/shubio.h>
-#include <asm/sn/bte.h>
-
-
-/*
- * Bte error handling is done in two parts.  The first captures
- * any crb related errors.  Since there can be multiple crbs per
- * interface and multiple interfaces active, we need to wait until
- * all active crbs are completed.  This is the first job of the
- * second part error handler.  When all bte related CRBs are cleanly
- * completed, it resets the interfaces and gets them ready for new
- * transfers to be queued.
- */
-
-
-void bte_error_handler(unsigned long);
-
-
-/*
- * First part error handler.  This is called whenever any error CRB interrupt
- * is generated by the II.
- */
-void
-bte_crb_error_handler(vertex_hdl_t hub_v, int btenum,
-		      int crbnum, ioerror_t * ioe, int bteop)
-{
-	hubinfo_t hinfo;
-	struct bteinfo_s *bte;
-
-
-	hubinfo_get(hub_v, &hinfo);
-	bte = &hinfo->h_nodepda->bte_if[btenum];
-
-	/*
-	 * The caller has already figured out the error type, we save that
-	 * in the bte handle structure for the thread excercising the
-	 * interface to consume.
-	 */
-	bte->bh_error = ioe->ie_errortype + BTEFAIL_OFFSET;
-	bte->bte_error_count++;
-
-	BTE_PRINTK(("Got an error on cnode %d bte %d: HW error type 0x%x\n",
-		    bte->bte_cnode, bte->bte_num, ioe->ie_errortype));
-	bte_error_handler((unsigned long) hinfo->h_nodepda);
-}
-
-
-/*
- * Second part error handler.  Wait until all BTE related CRBs are completed
- * and then reset the interfaces.
- */
-void
-bte_error_handler(unsigned long _nodepda)
-{
-	struct nodepda_s *err_nodepda = (struct nodepda_s *) _nodepda;
-	spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
-	struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
-	nasid_t nasid;
-	int i;
-	int valid_crbs;
-	unsigned long irq_flags;
-	volatile u64 *notify;
-	bte_result_t bh_error;
-	ii_imem_u_t imem;	/* II IMEM Register */
-	ii_icrb0_d_u_t icrbd;	/* II CRB Register D */
-	ii_ibcr_u_t ibcr;
-	ii_icmr_u_t icmr;
-	ii_ieclr_u_t ieclr;
-
-
-	BTE_PRINTK(("bte_error_handler(%p) - %d\n", err_nodepda,
-		    smp_processor_id()));
-
-	spin_lock_irqsave(recovery_lock, irq_flags);
-
-	if ((err_nodepda->bte_if[0].bh_error == BTE_SUCCESS) &&
-	    (err_nodepda->bte_if[1].bh_error == BTE_SUCCESS)) {
-		BTE_PRINTK(("eh:%p:%d Nothing to do.\n", err_nodepda,
-			    smp_processor_id()));
-		spin_unlock_irqrestore(recovery_lock, irq_flags);
-		return;
-	}
-	/*
-	 * Lock all interfaces on this node to prevent new transfers
-	 * from being queued.
-	 */
-	for (i = 0; i < BTES_PER_NODE; i++) {
-		if (err_nodepda->bte_if[i].cleanup_active) {
-			continue;
-		}
-		spin_lock(&err_nodepda->bte_if[i].spinlock);
-		BTE_PRINTK(("eh:%p:%d locked %d\n", err_nodepda,
-			    smp_processor_id(), i));
-		err_nodepda->bte_if[i].cleanup_active = 1;
-	}
-
-	/* Determine information about our hub */
-	nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode);
-
-
-	/*
-	 * A BTE transfer can use multiple CRBs.  We need to make sure
-	 * that all the BTE CRBs are complete (or timed out) before
-	 * attempting to clean up the error.  Resetting the BTE while
-	 * there are still BTE CRBs active will hang the BTE.
-	 * We should look at all the CRBs to see if they are allocated
-	 * to the BTE and see if they are still active.  When none
-	 * are active, we can continue with the cleanup.
-	 *
-	 * We also want to make sure that the local NI port is up.
-	 * When a router resets the NI port can go down, while it
-	 * goes through the LLP handshake, but then comes back up.
-	 */
-	icmr.ii_icmr_regval = REMOTE_HUB_L(nasid, IIO_ICMR);
-	if (icmr.ii_icmr_fld_s.i_crb_mark != 0) {
-		/*
-		 * There are errors which still need to be cleaned up by
-		 * hubiio_crb_error_handler
-		 */
-		mod_timer(recovery_timer, HZ * 5);
-		BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda,
-			    smp_processor_id()));
-		spin_unlock_irqrestore(recovery_lock, irq_flags);
-		return;
-	}
-	if (icmr.ii_icmr_fld_s.i_crb_vld != 0) {
-
-		valid_crbs = icmr.ii_icmr_fld_s.i_crb_vld;
-
-		for (i = 0; i < IIO_NUM_CRBS; i++) {
-			if (!((1 << i) & valid_crbs)) {
-				/* This crb was not marked as valid, ignore */
-				continue;
-			}
-			icrbd.ii_icrb0_d_regval =
-			    REMOTE_HUB_L(nasid, IIO_ICRB_D(i));
-			if (icrbd.d_bteop) {
-				mod_timer(recovery_timer, HZ * 5);
-				BTE_PRINTK(("eh:%p:%d Valid %d, Giving up\n",
-					 err_nodepda, smp_processor_id(), i));
-				spin_unlock_irqrestore(recovery_lock,
-						       irq_flags);
-				return;
-			}
-		}
-	}
-
-
-	BTE_PRINTK(("eh:%p:%d Cleaning up\n", err_nodepda,
-		    smp_processor_id()));
-	/* Reenable both bte interfaces */
-	imem.ii_imem_regval = REMOTE_HUB_L(nasid, IIO_IMEM);
-	imem.ii_imem_fld_s.i_b0_esd = imem.ii_imem_fld_s.i_b1_esd = 1;
-	REMOTE_HUB_S(nasid, IIO_IMEM, imem.ii_imem_regval);
-
-	/* Clear IBLS0/1 error bits */
-	ieclr.ii_ieclr_regval = 0;
-	if (err_nodepda->bte_if[0].bh_error != BTE_SUCCESS)
-		ieclr.ii_ieclr_fld_s.i_e_bte_0 = 1;
-	if (err_nodepda->bte_if[1].bh_error != BTE_SUCCESS)
-                ieclr.ii_ieclr_fld_s.i_e_bte_1 = 1;
-	REMOTE_HUB_S(nasid, IIO_IECLR, ieclr.ii_ieclr_regval);
-
-	/* Reinitialize both BTE state machines. */
-	ibcr.ii_ibcr_regval = REMOTE_HUB_L(nasid, IIO_IBCR);
-	ibcr.ii_ibcr_fld_s.i_soft_reset = 1;
-	REMOTE_HUB_S(nasid, IIO_IBCR, ibcr.ii_ibcr_regval);
-
-
-	for (i = 0; i < BTES_PER_NODE; i++) {
-		bh_error = err_nodepda->bte_if[i].bh_error;
-		if (bh_error != BTE_SUCCESS) {
-			/* There is an error which needs to be notified */
-			notify = err_nodepda->bte_if[i].most_rcnt_na;
-			BTE_PRINTK(("cnode %d bte %d error=0x%lx\n",
-				    err_nodepda->bte_if[i].bte_cnode,
-				    err_nodepda->bte_if[i].bte_num,
-				    IBLS_ERROR | (u64) bh_error));
-			*notify = IBLS_ERROR | bh_error;
-			err_nodepda->bte_if[i].bh_error = BTE_SUCCESS;
-		}
-
-		err_nodepda->bte_if[i].cleanup_active = 0;
-		BTE_PRINTK(("eh:%p:%d Unlocked %d\n", err_nodepda,
-			    smp_processor_id(), i));
-		spin_unlock(&err_nodepda->bte_if[i].spinlock);
-	}
-
-	del_timer(recovery_timer);
-
-	spin_unlock_irqrestore(recovery_lock, irq_flags);
-}

arch/ia64/sn/io/sn2/l1_command.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 1992-1997,2000-2003 Silicon Graphics, Inc. All rights reserved.
- */ 
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/sn/sgi.h>
-#include <asm/sn/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/hcl_util.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/router.h>
-#include <asm/sn/module.h>
-#include <asm/sn/ksys/l1.h>
-#include <asm/sn/nodepda.h>
-#include <asm/sn/clksupport.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/sn_sal.h>
-#include <linux/ctype.h>
-
-/* elsc_display_line writes up to 12 characters to either the top or bottom
- * line of the L1 display.  line points to a buffer containing the message
- * to be displayed.  The zero-based line number is specified by lnum (so
- * lnum == 0 specifies the top line and lnum == 1 specifies the bottom).
- * Lines longer than 12 characters, or line numbers not less than
- * L1_DISPLAY_LINES, cause elsc_display_line to return an error.
- */
-int elsc_display_line(nasid_t nasid, char *line, int lnum)
-{
-    return 0;
-}
-
-
-/*
- * iobrick routines
- */
-
-/* iobrick_rack_bay_type_get fills in the three int * arguments with the
- * rack number, bay number and brick type of the L1 being addressed.  Note
- * that if the L1 operation fails and this function returns an error value, 
- * garbage may be written to brick_type.
- */
-
-
-int iobrick_rack_bay_type_get( nasid_t nasid, uint *rack, 
-			       uint *bay, uint *brick_type )
-{
-	int result = 0;
-
-	if ( ia64_sn_sysctl_iobrick_module_get(nasid, &result) )
-		return( ELSC_ERROR_CMD_SEND );
-
-	*rack = (result & MODULE_RACK_MASK) >> MODULE_RACK_SHFT;
-	*bay = (result & MODULE_BPOS_MASK) >> MODULE_BPOS_SHFT;
-	*brick_type = (result & MODULE_BTYPE_MASK) >> MODULE_BTYPE_SHFT;
-	return 0;
-}
-
-
-int iomoduleid_get(nasid_t nasid)
-{
-	int result = 0;
-
-	if ( ia64_sn_sysctl_iobrick_module_get(nasid, &result) )
-		return( ELSC_ERROR_CMD_SEND );
-
-	return result;
-}
-
-int
-iobrick_type_get_nasid(nasid_t nasid)
-{
-    uint rack, bay, type;
-    int t, ret;
-    extern char brick_types[];
-
-    if ((ret = iobrick_rack_bay_type_get(nasid, &rack, &bay, &type)) < 0) {
-        return ret;
-    }
-
-    /* convert brick_type to lower case */
-    if ((type >= 'A') && (type <= 'Z'))
-        type = type - 'A' + 'a';
-
-    /* convert to a module.h brick type */
-    for( t = 0; t < MAX_BRICK_TYPES; t++ ) {
-        if( brick_types[t] == type ) {
-            return t;
-	}
-    }
-
-    return -1;    /* unknown brick */
-}
-
-/*
- * given a L1 bricktype, return a bricktype string.  This string is the
- * string that will be used in the hwpath for I/O bricks
- */
-char *
-iobrick_L1bricktype_to_name(int type)
-{
-    switch (type)
-    {
-    default:
-        return("Unknown");
-
-    case L1_BRICKTYPE_PX:
-        return(EDGE_LBL_PXBRICK);
-
-    case L1_BRICKTYPE_OPUS:
-        return(EDGE_LBL_OPUSBRICK);
-
-    case L1_BRICKTYPE_IX:
-        return(EDGE_LBL_IXBRICK);
-
-    case L1_BRICKTYPE_C:
-        return("Cbrick");
-
-    case L1_BRICKTYPE_R:
-        return("Rbrick");
-
-    case L1_BRICKTYPE_CHI_CG:
-        return(EDGE_LBL_CGBRICK);
-    }
-}
-

arch/ia64/sn/io/sn2/pcibr/Makefile

-# arch/ia64/sn/io/sn2/pcibr/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2002-2003 Silicon Graphics, Inc.  All Rights Reserved.
-#
-# Makefile for the sn2 specific pci bridge routines.
-#
-
-obj-y += pcibr_ate.o pcibr_config.o \
-	 pcibr_dvr.o pcibr_hints.o  \
-	 pcibr_intr.o pcibr_rrb.o   \
-	 pcibr_slot.o pcibr_error.o \
-	 pcibr_reg.o 

arch/ia64/sn/kernel/probe.c

-/*
- * Platform dependent support for IO probing.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#include <asm/sn/sgi.h>
-#include <asm/sn/sn_sal.h>
-
-/**
- * ia64_sn_probe_io_slot - test a memory location for readability
- * @paddr: physical address to probe
- * @size: number bytes to read (1,2,4,8)
- * @data_ptr: address to store value read by probe (-1 returned if probe fails)
- *
- * This function will probe a physical address to determine if
- * the address can be read. If reading the address causes a BUS
- * error, an error is returned. If the probe succeeds, the contents 
- * of the memory location is returned.
- *
- * Return values:
- *  0 - probe successful
- *  1 - probe failed (generated MCA)
- *  2 - Bad arg
- * <0 - PAL error
- */
-u64
-ia64_sn_probe_io_slot(long paddr, long size, void *data_ptr)
-{
-	struct ia64_sal_retval isrv;
-
-	SAL_CALL(isrv, SN_SAL_PROBE, paddr, size, 0, 0, 0, 0, 0);
-
-	if (data_ptr) {
-		switch (size) {
-			case 1:
-				*((u8*)data_ptr) = (u8)isrv.v0;
-				break;
-			case 2:
-				*((u16*)data_ptr) = (u16)isrv.v0;
-				break;
-			case 4:
-				*((u32*)data_ptr) = (u32)isrv.v0;
-				break;
-			case 8:
-				*((u64*)data_ptr) = (u64)isrv.v0;
-				break;
-			default:
-				isrv.status = 2;	
-		}
-	}
-
-	return isrv.status;
-}

include/asm-ia64/sn/slotnum.h

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992-1997,2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-#ifndef _ASM_IA64_SN_SLOTNUM_H
-#define _ASM_IA64_SN_SLOTNUM_H
-
-
-typedef	unsigned char slotid_t;
-
-#include <asm/sn/sn2/slotnum.h>
-
-#endif /* _ASM_IA64_SN_SLOTNUM_H */