linux/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c

/*
 * Copyright 2017 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/module.h>
#include <linux/slab.h>

#include "vega12/smu9_driver_if.h"
#include "vega12_processpptables.h"
#include "ppatomfwctrl.h"
#include "atomfirmware.h"
#include "pp_debug.h"
#include "cgs_common.h"
#include "vega12_pptable.h"

static void set_hw_cap(struct pp_hwmgr *hwmgr, bool enable,
		enum phm_platform_caps cap)
{ … }

static const void *get_powerplay_table(struct pp_hwmgr *hwmgr)
{ … }

static int check_powerplay_tables(
		struct pp_hwmgr *hwmgr,
		const ATOM_Vega12_POWERPLAYTABLE *powerplay_table)
{ … }

static int set_platform_caps(struct pp_hwmgr *hwmgr, uint32_t powerplay_caps)
{ … }

static int append_vbios_pptable(struct pp_hwmgr *hwmgr, PPTable_t *ppsmc_pptable)
{ … }

#define VEGA12_ENGINECLOCK_HARDMAX …
static int init_powerplay_table_information(
		struct pp_hwmgr *hwmgr,
		const ATOM_Vega12_POWERPLAYTABLE *powerplay_table)
{ … }

static int vega12_pp_tables_initialize(struct pp_hwmgr *hwmgr)
{ … }

static int vega12_pp_tables_uninitialize(struct pp_hwmgr *hwmgr)
{ … }

const struct pp_table_func vega12_pptable_funcs = …;

#if 0
static uint32_t make_classification_flags(struct pp_hwmgr *hwmgr,
		uint16_t classification, uint16_t classification2)
{
	uint32_t result = 0;

	if (classification & ATOM_PPLIB_CLASSIFICATION_BOOT)
		result |= PP_StateClassificationFlag_Boot;

	if (classification & ATOM_PPLIB_CLASSIFICATION_THERMAL)
		result |= PP_StateClassificationFlag_Thermal;

	if (classification & ATOM_PPLIB_CLASSIFICATION_LIMITEDPOWERSOURCE)
		result |= PP_StateClassificationFlag_LimitedPowerSource;

	if (classification & ATOM_PPLIB_CLASSIFICATION_REST)
		result |= PP_StateClassificationFlag_Rest;

	if (classification & ATOM_PPLIB_CLASSIFICATION_FORCED)
		result |= PP_StateClassificationFlag_Forced;

	if (classification & ATOM_PPLIB_CLASSIFICATION_ACPI)
		result |= PP_StateClassificationFlag_ACPI;

	if (classification2 & ATOM_PPLIB_CLASSIFICATION2_LIMITEDPOWERSOURCE_2)
		result |= PP_StateClassificationFlag_LimitedPowerSource_2;

	return result;
}

int vega12_get_powerplay_table_entry(struct pp_hwmgr *hwmgr,
		uint32_t entry_index, struct pp_power_state *power_state,
		int (*call_back_func)(struct pp_hwmgr *, void *,
				struct pp_power_state *, void *, uint32_t))
{
	int result = 0;
	const ATOM_Vega12_State_Array *state_arrays;
	const ATOM_Vega12_State *state_entry;
	const ATOM_Vega12_POWERPLAYTABLE *pp_table =
			get_powerplay_table(hwmgr);

	PP_ASSERT_WITH_CODE(pp_table, "Missing PowerPlay Table!",
			return -1;);
	power_state->classification.bios_index = entry_index;

	if (pp_table->sHeader.format_revision >=
			ATOM_Vega12_TABLE_REVISION_VEGA12) {
		state_arrays = (ATOM_Vega12_State_Array *)
				(((unsigned long)pp_table) +
				le16_to_cpu(pp_table->usStateArrayOffset));

		PP_ASSERT_WITH_CODE(pp_table->usStateArrayOffset > 0,
				"Invalid PowerPlay Table State Array Offset.",
				return -1);
		PP_ASSERT_WITH_CODE(state_arrays->ucNumEntries > 0,
				"Invalid PowerPlay Table State Array.",
				return -1);
		PP_ASSERT_WITH_CODE((entry_index <= state_arrays->ucNumEntries),
				"Invalid PowerPlay Table State Array Entry.",
				return -1);

		state_entry = &(state_arrays->states[entry_index]);

		result = call_back_func(hwmgr, (void *)state_entry, power_state,
				(void *)pp_table,
				make_classification_flags(hwmgr,
					le16_to_cpu(state_entry->usClassification),
					le16_to_cpu(state_entry->usClassification2)));
	}

	if (!result && (power_state->classification.flags &
			PP_StateClassificationFlag_Boot))
		result = hwmgr->hwmgr_func->patch_boot_state(hwmgr, &(power_state->hardware));

	return result;
}
#endif