blob: e45a1fcc7f086e4e949668ac2b264652f809b591 [file] [log] [blame]
/*
* 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/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include "pp_psm.h"
int psm_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 0;
if (hwmgr->hwmgr_func->get_power_state_size == NULL)
return 0;
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);
if (table_entries == 0 || size == 0) {
pr_warn("Please check whether power state management is supported on this asic\n");
return 0;
}
hwmgr->ps = kcalloc(table_entries, size, GFP_KERNEL);
if (hwmgr->ps == NULL)
return -ENOMEM;
hwmgr->request_ps = kzalloc(size, GFP_KERNEL);
if (hwmgr->request_ps == NULL) {
kfree(hwmgr->ps);
hwmgr->ps = NULL;
return -ENOMEM;
}
hwmgr->current_ps = kzalloc(size, GFP_KERNEL);
if (hwmgr->current_ps == NULL) {
kfree(hwmgr->request_ps);
kfree(hwmgr->ps);
hwmgr->request_ps = NULL;
hwmgr->ps = NULL;
return -ENOMEM;
}
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;
memcpy(hwmgr->current_ps, state, size);
memcpy(hwmgr->request_ps, state, size);
}
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 *)((unsigned long)state + size);
}
return 0;
}
int psm_fini_power_state_table(struct pp_hwmgr *hwmgr)
{
if (hwmgr == NULL)
return -EINVAL;
if (!hwmgr->ps)
return 0;
kfree(hwmgr->current_ps);
kfree(hwmgr->request_ps);
kfree(hwmgr->ps);
hwmgr->request_ps = NULL;
hwmgr->ps = NULL;
hwmgr->current_ps = NULL;
return 0;
}
static int psm_get_ui_state(struct pp_hwmgr *hwmgr,
enum PP_StateUILabel ui_label,
unsigned long *state_id)
{
struct pp_power_state *state;
int table_entries;
int i;
table_entries = hwmgr->num_ps;
state = hwmgr->ps;
for (i = 0; i < table_entries; i++) {
if (state->classification.ui_label & ui_label) {
*state_id = state->id;
return 0;
}
state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
}
return -EINVAL;
}
static int psm_get_state_by_classification(struct pp_hwmgr *hwmgr,
enum PP_StateClassificationFlag flag,
unsigned long *state_id)
{
struct pp_power_state *state;
int table_entries;
int i;
table_entries = hwmgr->num_ps;
state = hwmgr->ps;
for (i = 0; i < table_entries; i++) {
if (state->classification.flags & flag) {
*state_id = state->id;
return 0;
}
state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
}
return -EINVAL;
}
static int psm_set_states(struct pp_hwmgr *hwmgr, unsigned long state_id)
{
struct pp_power_state *state;
int table_entries;
int i;
table_entries = hwmgr->num_ps;
state = hwmgr->ps;
for (i = 0; i < table_entries; i++) {
if (state->id == state_id) {
memcpy(hwmgr->request_ps, state, hwmgr->ps_size);
return 0;
}
state = (struct pp_power_state *)((unsigned long)state + hwmgr->ps_size);
}
return -EINVAL;
}
int psm_set_boot_states(struct pp_hwmgr *hwmgr)
{
unsigned long state_id;
int ret = -EINVAL;
if (!hwmgr->ps)
return 0;
if (!psm_get_state_by_classification(hwmgr, PP_StateClassificationFlag_Boot,
&state_id))
ret = psm_set_states(hwmgr, state_id);
return ret;
}
int psm_set_performance_states(struct pp_hwmgr *hwmgr)
{
unsigned long state_id;
int ret = -EINVAL;
if (!hwmgr->ps)
return 0;
if (!psm_get_ui_state(hwmgr, PP_StateUILabel_Performance,
&state_id))
ret = psm_set_states(hwmgr, state_id);
return ret;
}
int psm_set_user_performance_state(struct pp_hwmgr *hwmgr,
enum PP_StateUILabel label_id,
struct pp_power_state **state)
{
int table_entries;
int i;
if (!hwmgr->ps)
return 0;
table_entries = hwmgr->num_ps;
*state = hwmgr->ps;
restart_search:
for (i = 0; i < table_entries; i++) {
if ((*state)->classification.ui_label & label_id)
return 0;
*state = (struct pp_power_state *)((uintptr_t)*state + hwmgr->ps_size);
}
switch (label_id) {
case PP_StateUILabel_Battery:
case PP_StateUILabel_Balanced:
label_id = PP_StateUILabel_Performance;
goto restart_search;
default:
break;
}
return -EINVAL;
}
static void power_state_management(struct pp_hwmgr *hwmgr,
struct pp_power_state *new_ps)
{
struct pp_power_state *pcurrent;
struct pp_power_state *requested;
bool equal;
if (new_ps != NULL)
requested = new_ps;
else
requested = hwmgr->request_ps;
pcurrent = hwmgr->current_ps;
phm_apply_state_adjust_rules(hwmgr, requested, pcurrent);
if (pcurrent == NULL || (0 != phm_check_states_equal(hwmgr,
&pcurrent->hardware, &requested->hardware, &equal)))
equal = false;
if (!equal || phm_check_smc_update_required_for_display_configuration(hwmgr)) {
phm_set_power_state(hwmgr, &pcurrent->hardware, &requested->hardware);
memcpy(hwmgr->current_ps, hwmgr->request_ps, hwmgr->ps_size);
}
}
int psm_adjust_power_state_dynamic(struct pp_hwmgr *hwmgr, bool skip,
struct pp_power_state *new_ps)
{
uint32_t index;
long workload;
if (skip)
return 0;
if (!hwmgr->ps)
/*
* for vega12/vega20 which does not support power state manager
* DAL clock limits should also be honoured
*/
phm_apply_clock_adjust_rules(hwmgr);
phm_pre_display_configuration_changed(hwmgr);
phm_display_configuration_changed(hwmgr);
if (hwmgr->ps)
power_state_management(hwmgr, new_ps);
phm_notify_smc_display_config_after_ps_adjustment(hwmgr);
if (!phm_force_dpm_levels(hwmgr, hwmgr->request_dpm_level))
hwmgr->dpm_level = hwmgr->request_dpm_level;
if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL) {
index = fls(hwmgr->workload_mask);
index = index > 0 && index <= Workload_Policy_Max ? index - 1 : 0;
workload = hwmgr->workload_setting[index];
if (hwmgr->power_profile_mode != workload && hwmgr->hwmgr_func->set_power_profile_mode)
hwmgr->hwmgr_func->set_power_profile_mode(hwmgr, &workload, 0);
}
return 0;
}