diff options
Diffstat (limited to 'drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c')
-rw-r--r-- | drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c new file mode 100644 index 0000000000..1d829402cd --- /dev/null +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c @@ -0,0 +1,305 @@ +/* + * 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 (result) { + kfree(hwmgr->current_ps); + kfree(hwmgr->request_ps); + kfree(hwmgr->ps); + hwmgr->current_ps = NULL; + hwmgr->request_ps = NULL; + hwmgr->ps = NULL; + return -EINVAL; + } + + 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_display_settings, + struct pp_power_state *new_ps) +{ + uint32_t index; + long workload; + + if (hwmgr->not_vf) { + if (!skip_display_settings) + phm_display_configuration_changed(hwmgr); + + if (hwmgr->ps) + power_state_management(hwmgr, new_ps); + else + /* + * for vega12/vega20 which does not support power state manager + * DAL clock limits should also be honoured + */ + phm_apply_clock_adjust_rules(hwmgr); + + if (!skip_display_settings) + 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; +} + |