drm/amd/powerplay: add hardware manager sub-component

The hwmgr handles all hardware related calls, including clock/power
gating control, DPM, read and parse PPTable, etc.

v5: squash in fixes
v4: implement acpi's atcs function use cgs interface
v3: fix code style error and add big-endian mode support.
v2: use cgs interface directly in hwmgr sub-module
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/Makefile

@@ -6,7 +6,7 @@ subdir-ccflags-y += -Iinclude/drm  \
 
 AMD_PP_PATH = ../powerplay
 
-PP_LIBS = smumgr
+PP_LIBS = smumgr hwmgr
 
 AMD_POWERPLAY = $(addsuffix /Makefile,$(addprefix drivers/gpu/drm/amd/powerplay/,$(PP_LIBS)))
 

drivers/gpu/drm/amd/powerplay/amd_powerplay.c

@@ -35,12 +35,46 @@ static int pp_early_init(void *handle)
 
 static int pp_sw_init(void *handle)
 {
-	return 0;
+	struct pp_instance *pp_handle;
+	struct pp_hwmgr  *hwmgr;
+	int ret = 0;
+
+	if (handle == NULL)
+		return -EINVAL;
+
+	pp_handle = (struct pp_instance *)handle;
+	hwmgr = pp_handle->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->pptable_func == NULL ||
+	    hwmgr->hwmgr_func == NULL ||
+	    hwmgr->pptable_func->pptable_init == NULL ||
+	    hwmgr->hwmgr_func->backend_init == NULL)
+		return -EINVAL;
+
+	ret = hwmgr->pptable_func->pptable_init(hwmgr);
+	if (ret == 0)
+		ret = hwmgr->hwmgr_func->backend_init(hwmgr);
+
+	return ret;
 }
 
 static int pp_sw_fini(void *handle)
 {
-	return 0;
+	struct pp_instance *pp_handle;
+	struct pp_hwmgr  *hwmgr;
+	int ret = 0;
+
+	if (handle == NULL)
+		return -EINVAL;
+
+	pp_handle = (struct pp_instance *)handle;
+	hwmgr = pp_handle->hwmgr;
+
+	if (hwmgr != NULL || hwmgr->hwmgr_func != NULL ||
+	    hwmgr->hwmgr_func->backend_fini != NULL)
+		ret = hwmgr->hwmgr_func->backend_fini(hwmgr);
+
+	return ret;
 }
 
 static int pp_hw_init(void *handle)
@@ -72,6 +106,8 @@ static int pp_hw_init(void *handle)
 		smumgr->smumgr_funcs->smu_fini(smumgr);
 		return ret;
 	}
+	hw_init_power_state_table(pp_handle->hwmgr);
+
 	return 0;
 }
 
@@ -203,6 +239,7 @@ pp_debugfs_print_current_performance_level(void *handle,
 {
 	return;
 }
+
 const struct amd_powerplay_funcs pp_dpm_funcs = {
 	.get_temperature = NULL,
 	.load_firmware = pp_dpm_load_fw,
@@ -230,10 +267,20 @@ static int amd_pp_instance_init(struct amd_pp_init *pp_init,
 
 	ret = smum_init(pp_init, handle);
 	if (ret)
-		return ret;
+		goto fail_smum;
+
+	ret = hwmgr_init(pp_init, handle);
+	if (ret)
+		goto fail_hwmgr;
 
 	amd_pp->pp_handle = handle;
 	return 0;
+
+fail_hwmgr:
+	smum_fini(handle->smu_mgr);
+fail_smum:
+	kfree(handle);
+	return ret;
 }
 
 static int amd_pp_instance_fini(void *handle)
@@ -242,6 +289,8 @@ static int amd_pp_instance_fini(void *handle)
 	if (instance == NULL)
 		return -EINVAL;
 
+	hwmgr_fini(instance->hwmgr);
+
 	smum_fini(instance->smu_mgr);
 
 	kfree(handle);

drivers/gpu/drm/amd/powerplay/hwmgr/Makefile

+#
+# Makefile for the 'hw manager' sub-component of powerplay.
+# It provides the hardware management services for the driver.
+
+HARDWARE_MGR = hwmgr.o processpptables.o functiontables.o \
+	       hardwaremanager.o pp_acpi.o
+
+AMD_PP_HWMGR = $(addprefix $(AMD_PP_PATH)/hwmgr/,$(HARDWARE_MGR))
+
+AMD_POWERPLAY_FILES += $(AMD_PP_HWMGR)

drivers/gpu/drm/amd/powerplay/hwmgr/functiontables.c

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include "hwmgr.h"
+
+static int phm_run_table(struct pp_hwmgr *hwmgr,
+			 struct phm_runtime_table_header *rt_table,
+			 void *input,
+			 void *output,
+			 void *temp_storage)
+{
+	int result = 0;
+	phm_table_function *function;
+
+	for (function = rt_table->function_list; NULL != *function; function++) {
+		int tmp = (*function)(hwmgr, input, output, temp_storage, result);
+
+		if (tmp == PP_Result_TableImmediateExit)
+			break;
+		if (tmp) {
+			if (0 == result)
+				result = tmp;
+			if (rt_table->exit_error)
+				break;
+		}
+	}
+
+	return result;
+}
+
+int phm_dispatch_table(struct pp_hwmgr *hwmgr,
+		       struct phm_runtime_table_header *rt_table,
+		       void *input, void *output)
+{
+	int result = 0;
+	void *temp_storage = NULL;
+
+	if (hwmgr == NULL || rt_table == NULL || rt_table->function_list == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Parameter!\n");
+		return 0; /*temp return ture because some function not implement on some asic */
+	}
+
+	if (0 != rt_table->storage_size) {
+		temp_storage = kzalloc(rt_table->storage_size, GFP_KERNEL);
+		if (temp_storage == NULL) {
+			printk(KERN_ERR "[ powerplay ] Could not allocate table temporary storage\n");
+			return -1;
+		}
+	}
+
+	result = phm_run_table(hwmgr, rt_table, input, output, temp_storage);
+
+	if (NULL != temp_storage)
+		kfree(temp_storage);
+
+	return result;
+}
+
+int phm_construct_table(struct pp_hwmgr *hwmgr,
+			struct phm_master_table_header *master_table,
+			struct phm_runtime_table_header *rt_table)
+{
+	uint32_t function_count = 0;
+	const struct phm_master_table_item *table_item;
+	uint32_t size;
+	phm_table_function *run_time_list;
+	phm_table_function *rtf;
+
+	if (hwmgr == NULL || master_table == NULL || rt_table == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Parameter!\n");
+		return -1;
+	}
+
+	for (table_item = master_table->master_list;
+		NULL != table_item->tableFunction; table_item++) {
+		if ((NULL == table_item->isFunctionNeededInRuntimeTable) ||
+		    (table_item->isFunctionNeededInRuntimeTable(hwmgr)))
+			function_count++;
+	}
+
+	size = (function_count + 1) * sizeof(phm_table_function);
+	run_time_list = kzalloc(size, GFP_KERNEL);
+	if (NULL == run_time_list)
+		return -1;
+
+	rtf = run_time_list;
+	for (table_item = master_table->master_list;
+		NULL != table_item->tableFunction; table_item++) {
+		if ((rtf - run_time_list) > function_count) {
+			printk(KERN_ERR "[ powerplay ] Check function results have changed\n");
+			kfree(run_time_list);
+			return -1;
+		}
+
+		if ((NULL == table_item->isFunctionNeededInRuntimeTable) ||
+		     (table_item->isFunctionNeededInRuntimeTable(hwmgr))) {
+			*(rtf++) = table_item->tableFunction;
+		}
+	}
+
+	if ((rtf - run_time_list) > function_count) {
+		printk(KERN_ERR "[ powerplay ] Check function results have changed\n");
+		kfree(run_time_list);
+		return -1;
+	}
+
+	*rtf = NULL;
+	rt_table->function_list = run_time_list;
+	rt_table->exit_error = (0 != (master_table->flags & PHM_MasterTableFlag_ExitOnError));
+	rt_table->storage_size = master_table->storage_size;
+	return 0;
+}
+
+int phm_destroy_table(struct pp_hwmgr *hwmgr,
+		      struct phm_runtime_table_header *rt_table)
+{
+	if (hwmgr == NULL || rt_table == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Parameter\n");
+		return -1;
+	}
+
+	if (NULL == rt_table->function_list)
+		return 0;
+
+	kfree(rt_table->function_list);
+
+	rt_table->function_list = NULL;
+	rt_table->storage_size = 0;
+	rt_table->exit_error = false;
+
+	return 0;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include <linux/errno.h>
+#include "hwmgr.h"
+#include "hardwaremanager.h"
+#include "pp_acpi.h"
+#include "amd_acpi.h"
+
+void phm_init_dynamic_caps(struct pp_hwmgr *hwmgr)
+{
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableVoltageTransition);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableEngineTransition);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableMemoryTransition);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableMGClockGating);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableMGCGTSSM);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableLSClockGating);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_Force3DClockSupport);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableLightSleep);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableMCLS);
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisablePowerGating);
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableDPM);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_DisableSMUUVDHandshake);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_ThermalAutoThrottling);
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_PCIEPerformanceRequest);
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_NoOD5Support);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_UserMaxClockForMultiDisplays);
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_VpuRecoveryInProgress);
+
+	if (acpi_atcs_functions_supported(hwmgr->device, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST) &&
+		acpi_atcs_functions_supported(hwmgr->device, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION))
+		phm_cap_set(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_PCIEPerformanceRequest);
+}
+
+int phm_setup_asic(struct pp_hwmgr *hwmgr)
+{
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+		PHM_PlatformCaps_TablelessHardwareInterface)) {
+		if (NULL != hwmgr->hwmgr_func->asic_setup)
+			return hwmgr->hwmgr_func->asic_setup(hwmgr);
+	} else {
+		return phm_dispatch_table (hwmgr, &(hwmgr->setup_asic),
+					  NULL, NULL);
+	}
+
+	return 0;
+}
+
+int phm_enable_dynamic_state_management(struct pp_hwmgr *hwmgr)
+{
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+		PHM_PlatformCaps_TablelessHardwareInterface)) {
+		if (NULL != hwmgr->hwmgr_func->dynamic_state_management_enable)
+			return hwmgr->hwmgr_func->dynamic_state_management_enable(hwmgr);
+	} else {
+		return phm_dispatch_table (hwmgr,
+				&(hwmgr->enable_dynamic_state_management),
+				NULL, NULL);
+	}
+	return 0;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "linux/delay.h"
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include "cgs_common.h"
+#include "power_state.h"
+#include "hwmgr.h"
+
+
+
+int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
+{
+	struct pp_hwmgr *hwmgr;
+
+	if ((handle == NULL) || (pp_init == NULL))
+		return -EINVAL;
+
+	hwmgr = kzalloc(sizeof(struct pp_hwmgr), GFP_KERNEL);
+	if (hwmgr == NULL)
+		return -ENOMEM;
+
+	handle->hwmgr = hwmgr;
+	hwmgr->smumgr = handle->smu_mgr;
+	hwmgr->device = pp_init->device;
+	hwmgr->chip_family = pp_init->chip_family;
+	hwmgr->chip_id = pp_init->chip_id;
+	hwmgr->hw_revision = pp_init->rev_id;
+	hwmgr->usec_timeout = AMD_MAX_USEC_TIMEOUT;
+	hwmgr->power_source = PP_PowerSource_AC;
+
+	switch (hwmgr->chip_family) {
+	default:
+		return -EINVAL;
+	}
+
+	phm_init_dynamic_caps(hwmgr);
+
+	return 0;
+}
+
+int hwmgr_fini(struct pp_hwmgr *hwmgr)
+{
+	if (hwmgr == NULL || hwmgr->ps == NULL)
+		return -EINVAL;
+
+	kfree(hwmgr->ps);
+	kfree(hwmgr);
+	return 0;
+}
+
+int hw_init_power_state_table(struct pp_hwmgr *hwmgr)
+{
+	int result;
+	unsigned int i;
+	unsigned int table_entries;
+	struct pp_power_state *state;
+	int size;
+
+	if (hwmgr->hwmgr_func->get_num_of_pp_table_entries == NULL)
+		return -EINVAL;
+
+	if (hwmgr->hwmgr_func->get_power_state_size == NULL)
+		return -EINVAL;
+
+	hwmgr->num_ps = table_entries = hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr);
+
+	hwmgr->ps_size = size = hwmgr->hwmgr_func->get_power_state_size(hwmgr) +
+					  sizeof(struct pp_power_state);
+
+	hwmgr->ps = kzalloc(size * table_entries, GFP_KERNEL);
+
+	state = hwmgr->ps;
+
+	for (i = 0; i < table_entries; i++) {
+		result = hwmgr->hwmgr_func->get_pp_table_entry(hwmgr, i, state);
+		if (state->classification.flags & PP_StateClassificationFlag_Boot) {
+			hwmgr->boot_ps = state;
+			hwmgr->current_ps = hwmgr->request_ps = state;
+		}
+
+		state->id = i + 1; /* assigned unique num for every power state id */
+
+		if (state->classification.flags & PP_StateClassificationFlag_Uvd)
+			hwmgr->uvd_ps = state;
+		state = (struct pp_power_state *)((uint64_t)state + size);
+	}
+
+	return 0;
+}
+
+
+/**
+ * Returns once the part of the register indicated by the mask has
+ * reached the given value.
+ */
+int phm_wait_on_register(struct pp_hwmgr *hwmgr, uint32_t index,
+			 uint32_t value, uint32_t mask)
+{
+	uint32_t i;
+	uint32_t cur_value;
+
+	if (hwmgr == NULL || hwmgr->device == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < hwmgr->usec_timeout; i++) {
+		cur_value = cgs_read_register(hwmgr->device, index);
+		if ((cur_value & mask) == (value & mask))
+			break;
+		udelay(1);
+	}
+
+	/* timeout means wrong logic*/
+	if (i == hwmgr->usec_timeout)
+		return -1;
+	return 0;
+}
+
+int phm_wait_for_register_unequal(struct pp_hwmgr *hwmgr,
+				uint32_t index, uint32_t value, uint32_t mask)
+{
+	uint32_t i;
+	uint32_t cur_value;
+
+	if (hwmgr == NULL || hwmgr->device == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < hwmgr->usec_timeout; i++) {
+		cur_value = cgs_read_register(hwmgr->device, index);
+		if ((cur_value & mask) != (value & mask))
+			break;
+		udelay(1);
+	}
+
+	/* timeout means wrong logic*/
+	if (i == hwmgr->usec_timeout)
+		return -1;
+	return 0;
+}
+
+
+/**
+ * Returns once the part of the register indicated by the mask has
+ * reached the given value.The indirect space is described by giving
+ * the memory-mapped index of the indirect index register.
+ */
+void phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
+				uint32_t indirect_port,
+				uint32_t index,
+				uint32_t value,
+				uint32_t mask)
+{
+	if (hwmgr == NULL || hwmgr->device == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
+		return;
+	}
+
+	cgs_write_register(hwmgr->device, indirect_port, index);
+	phm_wait_on_register(hwmgr, indirect_port + 1, mask, value);
+}
+
+void phm_wait_for_indirect_register_unequal(struct pp_hwmgr *hwmgr,
+					uint32_t indirect_port,
+					uint32_t index,
+					uint32_t value,
+					uint32_t mask)
+{
+	if (hwmgr == NULL || hwmgr->device == NULL) {
+		printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
+		return;
+	}
+
+	cgs_write_register(hwmgr->device, indirect_port, index);
+	phm_wait_for_register_unequal(hwmgr, indirect_port + 1,
+				      value, mask);
+}

drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c

+#include <linux/errno.h>
+#include "linux/delay.h"
+#include "hwmgr.h"
+#include "amd_acpi.h"
+
+bool acpi_atcs_functions_supported(void *device, uint32_t index)
+{
+	int32_t result;
+	struct atcs_verify_interface output_buf = {0};
+
+	int32_t temp_buffer = 1;
+
+	result = cgs_call_acpi_method(device, CGS_ACPI_METHOD_ATCS,
+						ATCS_FUNCTION_VERIFY_INTERFACE,
+						&temp_buffer,
+						&output_buf,
+						1,
+						sizeof(temp_buffer),
+						sizeof(output_buf));
+
+	return result == 0 ? (output_buf.function_bits & (1 << (index - 1))) != 0 : false;
+}
+
+int acpi_pcie_perf_request(void *device, uint8_t perf_req, bool advertise)
+{
+	struct atcs_pref_req_input atcs_input;
+	struct atcs_pref_req_output atcs_output;
+	u32 retry = 3;
+	int result;
+	struct cgs_system_info info = {0};
+
+	if (!acpi_atcs_functions_supported(device, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST))
+		return -EINVAL;
+
+	info.size = sizeof(struct cgs_system_info);
+	info.info_id = CGS_SYSTEM_INFO_ADAPTER_BDF_ID;
+	result = cgs_query_system_info(device, &info);
+	if (result != 0)
+		return -EINVAL;
+	atcs_input.client_id = (uint16_t)info.value;
+	atcs_input.size = sizeof(struct atcs_pref_req_input);
+	atcs_input.valid_flags_mask = ATCS_VALID_FLAGS_MASK;
+	atcs_input.flags = ATCS_WAIT_FOR_COMPLETION;
+	if (advertise)
+		atcs_input.flags |= ATCS_ADVERTISE_CAPS;
+	atcs_input.req_type = ATCS_PCIE_LINK_SPEED;
+	atcs_input.perf_req = perf_req;
+
+	atcs_output.size = sizeof(struct atcs_pref_req_input);
+
+	while (retry--) {
+		result = cgs_call_acpi_method(device,
+						CGS_ACPI_METHOD_ATCS,
+						ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST,
+						&atcs_input,
+						&atcs_output,
+						0,
+						sizeof(atcs_input),
+						sizeof(atcs_output));
+		if (result != 0)
+			return -EIO;
+
+		switch (atcs_output.ret_val) {
+		case ATCS_REQUEST_REFUSED:
+		default:
+			return -EINVAL;
+		case ATCS_REQUEST_COMPLETE:
+			return 0;
+		case ATCS_REQUEST_IN_PROGRESS:
+			udelay(10);
+			break;
+		}
+	}
+
+	return 0;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.h

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ * Interface Functions related to the BIOS PowerPlay Tables.
+ *
+ */
+
+#ifndef PROCESSPPTABLES_H
+#define PROCESSPPTABLES_H
+
+struct pp_hwmgr;
+struct pp_power_state;
+struct pp_hw_power_state;
+
+extern const struct pp_table_func pptable_funcs;
+
+typedef int (*pp_tables_hw_clock_info_callback)(struct pp_hwmgr *hwmgr,
+					struct pp_hw_power_state *hw_ps,
+							unsigned int index,
+						 const void *clock_info);
+
+int pp_tables_get_num_of_entries(struct pp_hwmgr *hwmgr,
+				     unsigned long *num_of_entries);
+
+int pp_tables_get_entry(struct pp_hwmgr *hwmgr,
+						unsigned long entry_index,
+						struct pp_power_state *ps,
+				pp_tables_hw_clock_info_callback func);
+
+#endif

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

@@ -28,7 +28,6 @@
 #include "amd_shared.h"
 #include "cgs_common.h"
 
-
 enum amd_pp_event {
 	AMD_PP_EVENT_INITIALIZE = 0,
 	AMD_PP_EVENT_UNINITIALIZE,

drivers/gpu/drm/amd/powerplay/inc/power_state.h

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifndef PP_POWERSTATE_H
+#define PP_POWERSTATE_H
+
+struct pp_hw_power_state {
+	unsigned int magic;
+};
+
+struct pp_power_state;
+
+
+#define PP_INVALID_POWER_STATE_ID (0)
+
+
+/*
+ * An item of a list containing Power States.
+ */
+
+struct PP_StateLinkedList {
+	struct pp_power_state *next;
+	struct pp_power_state *prev;
+};
+
+
+enum PP_StateUILabel {
+	PP_StateUILabel_None,
+	PP_StateUILabel_Battery,
+	PP_StateUILabel_MiddleLow,
+	PP_StateUILabel_Balanced,
+	PP_StateUILabel_MiddleHigh,
+	PP_StateUILabel_Performance,
+	PP_StateUILabel_BACO
+};
+
+enum PP_StateClassificationFlag {
+	PP_StateClassificationFlag_Boot                = 0x0001,
+	PP_StateClassificationFlag_Thermal             = 0x0002,
+	PP_StateClassificationFlag_LimitedPowerSource  = 0x0004,
+	PP_StateClassificationFlag_Rest                = 0x0008,
+	PP_StateClassificationFlag_Forced              = 0x0010,
+	PP_StateClassificationFlag_User3DPerformance   = 0x0020,
+	PP_StateClassificationFlag_User2DPerformance   = 0x0040,
+	PP_StateClassificationFlag_3DPerformance       = 0x0080,
+	PP_StateClassificationFlag_ACOverdriveTemplate   = 0x0100,
+	PP_StateClassificationFlag_Uvd                 = 0x0200,
+	PP_StateClassificationFlag_3DPerformanceLow    = 0x0400,
+	PP_StateClassificationFlag_ACPI                = 0x0800,
+	PP_StateClassificationFlag_HD2                 = 0x1000,
+	PP_StateClassificationFlag_UvdHD               = 0x2000,
+	PP_StateClassificationFlag_UvdSD               = 0x4000,
+	PP_StateClassificationFlag_UserDCPerformance    = 0x8000,
+	PP_StateClassificationFlag_DCOverdriveTemplate   = 0x10000,
+	PP_StateClassificationFlag_BACO                  = 0x20000,
+	PP_StateClassificationFlag_LimitedPowerSource_2  = 0x40000,
+	PP_StateClassificationFlag_ULV                   = 0x80000,
+	PP_StateClassificationFlag_UvdMVC               = 0x100000,
+};
+
+typedef unsigned int PP_StateClassificationFlags;
+
+struct PP_StateClassificationBlock {
+	enum PP_StateUILabel         ui_label;
+	enum PP_StateClassificationFlag  flags;
+	int                          bios_index;
+	bool                      temporary_state;
+	bool                      to_be_deleted;
+};
+
+struct PP_StatePcieBlock {
+	unsigned int lanes;
+};
+
+enum PP_RefreshrateSource {
+	PP_RefreshrateSource_EDID,
+	PP_RefreshrateSource_Explicit
+};
+
+struct PP_StateDisplayBlock {
+	bool              disableFrameModulation;
+	bool              limitRefreshrate;
+	enum PP_RefreshrateSource refreshrateSource;
+	int                  explicitRefreshrate;
+	int                  edidRefreshrateIndex;
+	bool              enableVariBright;
+};
+
+struct PP_StateMemroyBlock {
+	bool              dllOff;
+	uint8_t                 m3arb;
+	uint8_t                 unused[3];
+};
+
+struct PP_StateSoftwareAlgorithmBlock {
+	bool disableLoadBalancing;
+	bool enableSleepForTimestamps;
+};
+
+#define PP_TEMPERATURE_UNITS_PER_CENTIGRADES 1000
+
+/**
+ * Type to hold a temperature range.
+ */
+struct PP_TemperatureRange {
+	uint16_t min;
+	uint16_t max;
+};
+
+struct PP_StateValidationBlock {
+	bool singleDisplayOnly;
+	bool disallowOnDC;
+	uint8_t supportedPowerLevels;
+};
+
+struct PP_UVD_CLOCKS {
+	uint32_t VCLK;
+	uint32_t DCLK;
+};
+
+/**
+* Structure to hold a PowerPlay Power State.
+*/
+struct pp_power_state {
+	uint32_t                            id;
+	struct PP_StateLinkedList                  orderedList;
+	struct PP_StateLinkedList                  allStatesList;
+
+	struct PP_StateClassificationBlock         classification;
+	struct PP_StateValidationBlock             validation;
+	struct PP_StatePcieBlock                   pcie;
+	struct PP_StateDisplayBlock                display;
+	struct PP_StateMemroyBlock                 memory;
+	struct PP_TemperatureRange                 temperatures;
+	struct PP_StateSoftwareAlgorithmBlock      software;
+	struct PP_UVD_CLOCKS                       uvd_clocks;
+	struct pp_hw_power_state  hardware;
+};
+
+
+/*Structure to hold a VCE state entry*/
+struct PP_VCEState {
+	uint32_t evclk;
+	uint32_t ecclk;
+	uint32_t sclk;
+	uint32_t mclk;
+};
+
+enum PP_MMProfilingState {
+	PP_MMProfilingState_NA = 0,
+	PP_MMProfilingState_Started,
+	PP_MMProfilingState_Stopped
+};
+
+struct PP_Clock_Engine_Request {
+	unsigned long clientType;
+	unsigned long ctxid;
+	uint64_t  context_handle;
+	unsigned long sclk;
+	unsigned long sclkHardMin;
+	unsigned long mclk;
+	unsigned long iclk;
+	unsigned long evclk;
+	unsigned long ecclk;
+	unsigned long ecclkHardMin;
+	unsigned long vclk;
+	unsigned long dclk;
+	unsigned long samclk;
+	unsigned long acpclk;
+	unsigned long sclkOverdrive;
+	unsigned long mclkOverdrive;
+	unsigned long sclk_threshold;
+	unsigned long flag;
+	unsigned long vclk_ceiling;
+	unsigned long dclk_ceiling;
+	unsigned long num_cus;
+	unsigned long pmflag;
+	enum PP_MMProfilingState MMProfilingState;
+};
+
+#endif

drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+extern bool acpi_atcs_functions_supported(void *device,
+							uint32_t index);
+extern int acpi_pcie_perf_request(void *device,
+						uint8_t perf_req,
+						bool advertise);

drivers/gpu/drm/amd/powerplay/inc/pp_instance.h

@@ -24,10 +24,11 @@
 #define _PP_INSTANCE_H_
 
 #include "smumgr.h"
-
+#include "hwmgr.h"
 
 struct pp_instance {
 	struct pp_smumgr *smu_mgr;
+	struct pp_hwmgr *hwmgr;
 };
 
 #endif

drivers/gpu/drm/amd/powerplay/inc/pp_power_source.h

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef PP_POWERSOURCE_H
+#define PP_POWERSOURCE_H
+
+enum pp_power_source {
+	PP_PowerSource_AC = 0,
+	PP_PowerSource_DC,
+	PP_PowerSource_LimitedPower,
+	PP_PowerSource_LimitedPower_2,
+	PP_PowerSource_Max
+};
+
+
+#endif