From 828e37efe802ba8c868922af23099638fde5b7b4 Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Mon, 14 Jan 2019 15:44:44 +0800 Subject: [PATCH] drm/amd/powerplay: support retrieving and adjusting fclock power levels V2 User can use "pp_dpm_fclk" to retrieve and adjust fclock power levels. V2: expose this interface for Vega20 and later ASICs only Signed-off-by: Evan Quan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 53 ++++++++++++++- .../gpu/drm/amd/include/kgd_pp_interface.h | 1 + .../drm/amd/powerplay/hwmgr/vega20_hwmgr.c | 64 +++++++++++++++++++ 3 files changed, 116 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index 4bdb1d082bea..23eb6f61da13 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -680,13 +680,14 @@ static ssize_t amdgpu_get_ppfeature_status(struct device *dev, } /** - * DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_pcie + * DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_fclk pp_dpm_pcie * * The amdgpu driver provides a sysfs API for adjusting what power levels * are enabled for a given power state. The files pp_dpm_sclk, pp_dpm_mclk, - * pp_dpm_socclk and pp_dpm_pcie are used for this. + * pp_dpm_socclk, pp_dpm_fclk and pp_dpm_pcie are used for this. * * pp_dpm_socclk interface is only available for Vega10 and later ASICs. + * pp_dpm_fclk interface is only available for Vega20 and later ASICs. * * Reading back the files will show you the available power levels within * the power state and the clock information for those levels. @@ -842,6 +843,42 @@ static ssize_t amdgpu_set_pp_dpm_socclk(struct device *dev, return count; } +static ssize_t amdgpu_get_pp_dpm_fclk(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = ddev->dev_private; + + if (adev->powerplay.pp_funcs->print_clock_levels) + return amdgpu_dpm_print_clock_levels(adev, PP_FCLK, buf); + else + return snprintf(buf, PAGE_SIZE, "\n"); +} + +static ssize_t amdgpu_set_pp_dpm_fclk(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = ddev->dev_private; + int ret; + uint32_t mask = 0; + + ret = amdgpu_read_mask(buf, count, &mask); + if (ret) + return ret; + + if (adev->powerplay.pp_funcs->force_clock_level) + ret = amdgpu_dpm_force_clock_level(adev, PP_FCLK, mask); + + if (ret) + return -EINVAL; + + return count; +} + static ssize_t amdgpu_get_pp_dpm_pcie(struct device *dev, struct device_attribute *attr, char *buf) @@ -1128,6 +1165,9 @@ static DEVICE_ATTR(pp_dpm_mclk, S_IRUGO | S_IWUSR, static DEVICE_ATTR(pp_dpm_socclk, S_IRUGO | S_IWUSR, amdgpu_get_pp_dpm_socclk, amdgpu_set_pp_dpm_socclk); +static DEVICE_ATTR(pp_dpm_fclk, S_IRUGO | S_IWUSR, + amdgpu_get_pp_dpm_fclk, + amdgpu_set_pp_dpm_fclk); static DEVICE_ATTR(pp_dpm_pcie, S_IRUGO | S_IWUSR, amdgpu_get_pp_dpm_pcie, amdgpu_set_pp_dpm_pcie); @@ -2294,6 +2334,13 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev) return ret; } } + if (adev->asic_type >= CHIP_VEGA20) { + ret = device_create_file(adev->dev, &dev_attr_pp_dpm_fclk); + if (ret) { + DRM_ERROR("failed to create device file pp_dpm_fclk\n"); + return ret; + } + } ret = device_create_file(adev->dev, &dev_attr_pp_dpm_pcie); if (ret) { DRM_ERROR("failed to create device file pp_dpm_pcie\n"); @@ -2384,6 +2431,8 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev) if (adev->asic_type >= CHIP_VEGA10) device_remove_file(adev->dev, &dev_attr_pp_dpm_socclk); device_remove_file(adev->dev, &dev_attr_pp_dpm_pcie); + if (adev->asic_type >= CHIP_VEGA20) + device_remove_file(adev->dev, &dev_attr_pp_dpm_fclk); device_remove_file(adev->dev, &dev_attr_pp_sclk_od); device_remove_file(adev->dev, &dev_attr_pp_mclk_od); device_remove_file(adev->dev, diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index f5ec25a6ab54..f82de14f6560 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -93,6 +93,7 @@ enum pp_clock_type { PP_MCLK, PP_PCIE, PP_SOCCLK, + PP_FCLK, OD_SCLK, OD_MCLK, OD_VDDC_CURVE, diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c index e7c890f036fa..4e7399c310e2 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c @@ -1736,6 +1736,17 @@ static int vega20_upload_dpm_min_level(struct pp_hwmgr *hwmgr, uint32_t feature_ return ret); } + if (data->smu_features[GNLD_DPM_FCLK].enabled && + (feature_mask & FEATURE_DPM_FCLK_MASK)) { + min_freq = data->dpm_table.fclk_table.dpm_state.soft_min_level; + + PP_ASSERT_WITH_CODE(!(ret = smum_send_msg_to_smc_with_parameter( + hwmgr, PPSMC_MSG_SetSoftMinByFreq, + (PPCLK_FCLK << 16) | (min_freq & 0xffff))), + "Failed to set soft min fclk!", + return ret); + } + return ret; } @@ -1808,6 +1819,17 @@ static int vega20_upload_dpm_max_level(struct pp_hwmgr *hwmgr, uint32_t feature_ return ret); } + if (data->smu_features[GNLD_DPM_FCLK].enabled && + (feature_mask & FEATURE_DPM_FCLK_MASK)) { + max_freq = data->dpm_table.fclk_table.dpm_state.soft_max_level; + + PP_ASSERT_WITH_CODE(!(ret = smum_send_msg_to_smc_with_parameter( + hwmgr, PPSMC_MSG_SetSoftMaxByFreq, + (PPCLK_FCLK << 16) | (max_freq & 0xffff))), + "Failed to set soft max fclk!", + return ret); + } + return ret; } @@ -2324,6 +2346,34 @@ static int vega20_force_clock_level(struct pp_hwmgr *hwmgr, break; + case PP_FCLK: + soft_min_level = mask ? (ffs(mask) - 1) : 0; + soft_max_level = mask ? (fls(mask) - 1) : 0; + + if (soft_max_level >= data->dpm_table.fclk_table.count) { + pr_err("Clock level specified %d is over max allowed %d\n", + soft_max_level, + data->dpm_table.fclk_table.count - 1); + return -EINVAL; + } + + data->dpm_table.fclk_table.dpm_state.soft_min_level = + data->dpm_table.fclk_table.dpm_levels[soft_min_level].value; + data->dpm_table.fclk_table.dpm_state.soft_max_level = + data->dpm_table.fclk_table.dpm_levels[soft_max_level].value; + + ret = vega20_upload_dpm_min_level(hwmgr, FEATURE_DPM_FCLK_MASK); + PP_ASSERT_WITH_CODE(!ret, + "Failed to upload boot level to lowest!", + return ret); + + ret = vega20_upload_dpm_max_level(hwmgr, FEATURE_DPM_FCLK_MASK); + PP_ASSERT_WITH_CODE(!ret, + "Failed to upload dpm max level to highest!", + return ret); + + break; + case PP_PCIE: soft_min_level = mask ? (ffs(mask) - 1) : 0; soft_max_level = mask ? (fls(mask) - 1) : 0; @@ -2920,6 +2970,8 @@ static int vega20_print_clock_levels(struct pp_hwmgr *hwmgr, PPTable_t *pptable = (PPTable_t *)pptable_information->smc_pptable; struct amdgpu_device *adev = hwmgr->adev; struct pp_clock_levels_with_latency clocks; + struct vega20_single_dpm_table *fclk_dpm_table = + &(data->dpm_table.fclk_table); int i, now, size = 0; int ret = 0; uint32_t gen_speed, lane_width; @@ -2976,6 +3028,18 @@ static int vega20_print_clock_levels(struct pp_hwmgr *hwmgr, (clocks.data[i].clocks_in_khz == now * 10) ? "*" : ""); break; + case PP_FCLK: + ret = vega20_get_current_clk_freq(hwmgr, PPCLK_FCLK, &now); + PP_ASSERT_WITH_CODE(!ret, + "Attempt to get current fclk freq Failed!", + return ret); + + for (i = 0; i < fclk_dpm_table->count; i++) + size += sprintf(buf + size, "%d: %uMhz %s\n", + i, fclk_dpm_table->dpm_levels[i].value, + fclk_dpm_table->dpm_levels[i].value == (now / 100) ? "*" : ""); + break; + case PP_PCIE: gen_speed = (RREG32_PCIE(smnPCIE_LC_SPEED_CNTL) & PSWUSP0_PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE_MASK) -- 2.30.2