From: Sathishkumar S Date: Wed, 26 May 2021 10:36:19 +0000 (+0530) Subject: drm/amdgpu: enable smart shift on dGPU (v5) X-Git-Tag: v5.15~765^2~19^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3fa8f89d72073206cad0a8840ce65afa239911ad;p=platform%2Fkernel%2Flinux-starfive.git drm/amdgpu: enable smart shift on dGPU (v5) enable smart shift on dGPU if it is part of HG system and the platform supports ATCS method to handle power shift. V2: avoid psc updates in baco enter and exit (Lijo) fix alignment (Shashank) V3: rebased on unified ATCS handling. (Alex) V4: check for return value and warn on failed update (Shashank) return 0 if device does not support smart shift. (Lizo) V5: rebased on ATPX/ATCS structures global (Alex) Signed-off-by: Sathishkumar S Reviewed-by: Lijo Lazar Reviewed-by: Shashank Sharma Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index c215690670f2..93972dcd94ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -130,6 +130,13 @@ struct amdgpu_mgpu_info bool pending_reset; }; +enum amdgpu_ss { + AMDGPU_SS_DRV_LOAD, + AMDGPU_SS_DEV_D0, + AMDGPU_SS_DEV_D3, + AMDGPU_SS_DRV_UNLOAD +}; + struct amdgpu_watchdog_timer { bool timeout_fatal_disable; @@ -1264,6 +1271,7 @@ int amdgpu_device_mode1_reset(struct amdgpu_device *adev); bool amdgpu_device_supports_atpx(struct drm_device *dev); bool amdgpu_device_supports_px(struct drm_device *dev); bool amdgpu_device_supports_boco(struct drm_device *dev); +bool amdgpu_device_supports_smart_shift(struct drm_device *dev); bool amdgpu_device_supports_baco(struct drm_device *dev); bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev, struct amdgpu_device *peer_adev); @@ -1336,6 +1344,13 @@ struct amdgpu_afmt_acr { struct amdgpu_afmt_acr amdgpu_afmt_acr(uint32_t clock); /* amdgpu_acpi.c */ + +/* ATCS Device/Driver State */ +#define AMDGPU_ATCS_PSC_DEV_STATE_D0 0 +#define AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT 3 +#define AMDGPU_ATCS_PSC_DRV_STATE_OPR 0 +#define AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR 1 + #if defined(CONFIG_ACPI) int amdgpu_acpi_init(struct amdgpu_device *adev); void amdgpu_acpi_fini(struct amdgpu_device *adev); @@ -1345,6 +1360,7 @@ int amdgpu_acpi_pcie_performance_request(struct amdgpu_device *adev, u8 perf_req, bool advertise); int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, u8 dev_state, bool drv_state); +int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state); int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev); void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps); @@ -1358,6 +1374,8 @@ static inline void amdgpu_acpi_detect(void) { } static inline bool amdgpu_acpi_is_power_shift_control_supported(void) { return false; } static inline int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, u8 dev_state, bool drv_state) { return 0; } +static inline int amdgpu_acpi_smart_shift_update(struct drm_device *dev, + enum amdgpu_ss ss_state) { return 0; } #endif int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index b631316bfe5b..84a1b4bc9bb4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -754,6 +754,55 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, return 0; } +/** + * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS + * + * @dev: drm_device pointer + * @ss_state: current smart shift event + * + * returns 0 on success, + * otherwise return error number. + */ +int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int r; + + if (!amdgpu_device_supports_smart_shift(dev)) + return 0; + + switch (ss_state) { + /* SBIOS trigger “stop”, “enable” and “start” at D0, Driver Operational. + * SBIOS trigger “stop” at D3, Driver Not Operational. + * SBIOS trigger “stop” and “disable” at D0, Driver NOT operational. + */ + case AMDGPU_SS_DRV_LOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D0: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D3: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + case AMDGPU_SS_DRV_UNLOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + default: + return -EINVAL; + } + + return r; +} + /** * amdgpu_acpi_event - handle notify events * diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index f049b93a14ee..f364d5afb2ad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -263,6 +263,21 @@ bool amdgpu_device_supports_baco(struct drm_device *dev) return amdgpu_asic_supports_baco(adev); } +/** + * amdgpu_device_supports_smart_shift - Is the device dGPU with + * smart shift support + * + * @dev: drm_device pointer + * + * Returns true if the device is a dGPU with Smart Shift support, + * otherwise returns false. + */ +bool amdgpu_device_supports_smart_shift(struct drm_device *dev) +{ + return (amdgpu_device_supports_boco(dev) && + amdgpu_acpi_is_power_shift_control_supported()); +} + /* * VRAM access helper functions */ @@ -3750,6 +3765,10 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon) return 0; adev->in_suspend = true; + + if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D3)) + DRM_WARN("smart shift update failed\n"); + drm_kms_helper_poll_disable(dev); if (fbcon) @@ -3859,6 +3878,9 @@ int amdgpu_device_resume(struct drm_device *dev, bool fbcon) #endif adev->in_suspend = false; + if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D0)) + DRM_WARN("smart shift update failed\n"); + return 0; } @@ -4938,6 +4960,8 @@ skip_hw_reset: amdgpu_vf_error_put(tmp_adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r); } else { dev_info(tmp_adev->dev, "GPU reset(%d) succeeded!\n", atomic_read(&tmp_adev->gpu_reset_counter)); + if (amdgpu_acpi_smart_shift_update(adev_to_drm(tmp_adev), AMDGPU_SS_DEV_D0)) + DRM_WARN("smart shift update failed\n"); } } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 8d12e474745a..b4c0b2e0964d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -91,6 +91,9 @@ void amdgpu_driver_unload_kms(struct drm_device *dev) pm_runtime_forbid(dev->dev); } + if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DRV_UNLOAD)) + DRM_WARN("smart shift update failed\n"); + amdgpu_acpi_fini(adev); amdgpu_device_fini(adev); } @@ -214,6 +217,9 @@ int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags) pm_runtime_put_autosuspend(dev->dev); } + if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DRV_LOAD)) + DRM_WARN("smart shift update failed\n"); + out: if (r) { /* balance pm_runtime_get_sync in amdgpu_driver_unload_kms */