From 61d7d0d5adc705f833d8a5dbb596253842486220 Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Thu, 25 Nov 2021 11:15:46 +0800 Subject: drm/amd/pm: revise the performance level setting APIs Avoid cross callings which make lock protection enforcement on amdgpu_dpm_force_performance_level() impossible. Signed-off-by: Evan Quan Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/include/amd_shared.h | 2 -- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 29 ++++++++++++++++++++---- drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c | 17 +++++++------- drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 12 ---------- drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 15 ------------ drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h | 1 - 6 files changed, 34 insertions(+), 42 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index f57a1478f0fe..fb6ad56ad6f1 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -268,7 +268,6 @@ enum amd_dpm_forced_level; * @set_clockgating_state: enable/disable cg for the IP block * @set_powergating_state: enable/disable pg for the IP block * @get_clockgating_state: get current clockgating status - * @enable_umd_pstate: enable UMD powerstate * * These hooks provide an interface for controlling the operational state * of IP blocks. After acquiring a list of IP blocks for the GPU in use, @@ -299,7 +298,6 @@ struct amd_ip_funcs { int (*set_powergating_state)(void *handle, enum amd_powergating_state state); void (*get_clockgating_state)(void *handle, u32 *flags); - int (*enable_umd_pstate)(void *handle, enum amd_dpm_forced_level *level); }; diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index b14b004577e5..d3eab245e0fe 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -300,6 +300,10 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev, struct amdgpu_device *adev = drm_to_adev(ddev); enum amd_dpm_forced_level level; enum amd_dpm_forced_level current_level; + uint32_t profile_mode_mask = AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD | + AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK | + AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK | + AMD_DPM_FORCED_LEVEL_PROFILE_PEAK; int ret = 0; if (amdgpu_in_reset(adev)) @@ -354,10 +358,7 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev, } /* profile_exit setting is valid only when current mode is in profile mode */ - if (!(current_level & (AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD | - AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK | - AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK | - AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)) && + if (!(current_level & profile_mode_mask) && (level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT)) { pr_err("Currently not in any profile mode!\n"); pm_runtime_mark_last_busy(ddev->dev); @@ -365,6 +366,26 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev, return -EINVAL; } + if (!(current_level & profile_mode_mask) && + (level & profile_mode_mask)) { + /* enter UMD Pstate */ + amdgpu_device_ip_set_powergating_state(adev, + AMD_IP_BLOCK_TYPE_GFX, + AMD_PG_STATE_UNGATE); + amdgpu_device_ip_set_clockgating_state(adev, + AMD_IP_BLOCK_TYPE_GFX, + AMD_CG_STATE_UNGATE); + } else if ((current_level & profile_mode_mask) && + !(level & profile_mode_mask)) { + /* exit UMD Pstate */ + amdgpu_device_ip_set_clockgating_state(adev, + AMD_IP_BLOCK_TYPE_GFX, + AMD_CG_STATE_GATE); + amdgpu_device_ip_set_powergating_state(adev, + AMD_IP_BLOCK_TYPE_GFX, + AMD_PG_STATE_GATE); + } + if (amdgpu_dpm_force_performance_level(adev, level)) { pm_runtime_mark_last_busy(ddev->dev); pm_runtime_put_autosuspend(ddev->dev); diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c index 3c6ee493e410..9613c6181c17 100644 --- a/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c @@ -953,6 +953,7 @@ restart_search: static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev) { + const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs; struct amdgpu_ps *ps; enum amd_pm_state_type dpm_state; int ret; @@ -976,7 +977,7 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev) else return -EINVAL; - if (amdgpu_dpm == 1 && adev->powerplay.pp_funcs->print_power_state) { + if (amdgpu_dpm == 1 && pp_funcs->print_power_state) { printk("switching from power state:\n"); amdgpu_dpm_print_power_state(adev, adev->pm.dpm.current_ps); printk("switching to power state:\n"); @@ -985,14 +986,14 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev) /* update whether vce is active */ ps->vce_active = adev->pm.dpm.vce_active; - if (adev->powerplay.pp_funcs->display_configuration_changed) + if (pp_funcs->display_configuration_changed) amdgpu_dpm_display_configuration_changed(adev); ret = amdgpu_dpm_pre_set_power_state(adev); if (ret) return ret; - if (adev->powerplay.pp_funcs->check_state_equal) { + if (pp_funcs->check_state_equal) { if (0 != amdgpu_dpm_check_state_equal(adev, adev->pm.dpm.current_ps, adev->pm.dpm.requested_ps, &equal)) equal = false; } @@ -1000,24 +1001,24 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev) if (equal) return 0; - if (adev->powerplay.pp_funcs->set_power_state) - adev->powerplay.pp_funcs->set_power_state(adev->powerplay.pp_handle); + if (pp_funcs->set_power_state) + pp_funcs->set_power_state(adev->powerplay.pp_handle); amdgpu_dpm_post_set_power_state(adev); adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs; adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count; - if (adev->powerplay.pp_funcs->force_performance_level) { + if (pp_funcs->force_performance_level) { if (adev->pm.dpm.thermal_active) { enum amd_dpm_forced_level level = adev->pm.dpm.forced_level; /* force low perf level for thermal */ - amdgpu_dpm_force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW); + pp_funcs->force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW); /* save the user's level */ adev->pm.dpm.forced_level = level; } else { /* otherwise, user selected level */ - amdgpu_dpm_force_performance_level(adev, adev->pm.dpm.forced_level); + pp_funcs->force_performance_level(adev, adev->pm.dpm.forced_level); } } diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c index 6a06a1f0b79b..89341729744d 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c @@ -323,12 +323,6 @@ static void pp_dpm_en_umd_pstate(struct pp_hwmgr *hwmgr, if (*level & profile_mode_mask) { hwmgr->saved_dpm_level = hwmgr->dpm_level; hwmgr->en_umd_pstate = true; - amdgpu_device_ip_set_powergating_state(hwmgr->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_PG_STATE_UNGATE); - amdgpu_device_ip_set_clockgating_state(hwmgr->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_CG_STATE_UNGATE); } } else { /* exit umd pstate, restore level, enable gfx cg*/ @@ -336,12 +330,6 @@ static void pp_dpm_en_umd_pstate(struct pp_hwmgr *hwmgr, if (*level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT) *level = hwmgr->saved_dpm_level; hwmgr->en_umd_pstate = false; - amdgpu_device_ip_set_clockgating_state(hwmgr->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_CG_STATE_GATE); - amdgpu_device_ip_set_powergating_state(hwmgr->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_PG_STATE_GATE); } } } diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index 8895b2b595a4..c374c3067496 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -1677,14 +1677,7 @@ static int smu_enable_umd_pstate(void *handle, /* enter umd pstate, save current level, disable gfx cg*/ if (*level & profile_mode_mask) { smu_dpm_ctx->saved_dpm_level = smu_dpm_ctx->dpm_level; - smu_dpm_ctx->enable_umd_pstate = true; smu_gpo_control(smu, false); - amdgpu_device_ip_set_powergating_state(smu->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_PG_STATE_UNGATE); - amdgpu_device_ip_set_clockgating_state(smu->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_CG_STATE_UNGATE); smu_gfx_ulv_control(smu, false); smu_deep_sleep_control(smu, false); amdgpu_asic_update_umd_stable_pstate(smu->adev, true); @@ -1694,16 +1687,9 @@ static int smu_enable_umd_pstate(void *handle, if (!(*level & profile_mode_mask)) { if (*level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT) *level = smu_dpm_ctx->saved_dpm_level; - smu_dpm_ctx->enable_umd_pstate = false; amdgpu_asic_update_umd_stable_pstate(smu->adev, false); smu_deep_sleep_control(smu, true); smu_gfx_ulv_control(smu, true); - amdgpu_device_ip_set_clockgating_state(smu->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_CG_STATE_GATE); - amdgpu_device_ip_set_powergating_state(smu->adev, - AMD_IP_BLOCK_TYPE_GFX, - AMD_PG_STATE_GATE); smu_gpo_control(smu, true); } } @@ -2149,7 +2135,6 @@ const struct amd_ip_funcs smu_ip_funcs = { .soft_reset = NULL, .set_clockgating_state = smu_set_clockgating_state, .set_powergating_state = smu_set_powergating_state, - .enable_umd_pstate = smu_enable_umd_pstate, }; const struct amdgpu_ip_block_version smu_v11_0_ip_block = diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h index 8a689baeaf82..3fdab6a44901 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h +++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h @@ -363,7 +363,6 @@ struct smu_dpm_context { uint32_t dpm_context_size; void *dpm_context; void *golden_dpm_context; - bool enable_umd_pstate; enum amd_dpm_forced_level dpm_level; enum amd_dpm_forced_level saved_dpm_level; enum amd_dpm_forced_level requested_dpm_level; -- cgit v1.2.3-59-g8ed1b