diff options
Diffstat (limited to 'drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 235 |
1 files changed, 228 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index 60dce148b..0ad947df7 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -1315,6 +1315,187 @@ static int smu_get_thermal_temperature_range(struct smu_context *smu) return ret; } +/** + * smu_wbrf_handle_exclusion_ranges - consume the wbrf exclusion ranges + * + * @smu: smu_context pointer + * + * Retrieve the wbrf exclusion ranges and send them to PMFW for proper handling. + * Returns 0 on success, error on failure. + */ +static int smu_wbrf_handle_exclusion_ranges(struct smu_context *smu) +{ + struct wbrf_ranges_in_out wbrf_exclusion = {0}; + struct freq_band_range *wifi_bands = wbrf_exclusion.band_list; + struct amdgpu_device *adev = smu->adev; + uint32_t num_of_wbrf_ranges = MAX_NUM_OF_WBRF_RANGES; + uint64_t start, end; + int ret, i, j; + + ret = amd_wbrf_retrieve_freq_band(adev->dev, &wbrf_exclusion); + if (ret) { + dev_err(adev->dev, "Failed to retrieve exclusion ranges!\n"); + return ret; + } + + /* + * The exclusion ranges array we got might be filled with holes and duplicate + * entries. For example: + * {(2400, 2500), (0, 0), (6882, 6962), (2400, 2500), (0, 0), (6117, 6189), (0, 0)...} + * We need to do some sortups to eliminate those holes and duplicate entries. + * Expected output: {(2400, 2500), (6117, 6189), (6882, 6962), (0, 0)...} + */ + for (i = 0; i < num_of_wbrf_ranges; i++) { + start = wifi_bands[i].start; + end = wifi_bands[i].end; + + /* get the last valid entry to fill the intermediate hole */ + if (!start && !end) { + for (j = num_of_wbrf_ranges - 1; j > i; j--) + if (wifi_bands[j].start && wifi_bands[j].end) + break; + + /* no valid entry left */ + if (j <= i) + break; + + start = wifi_bands[i].start = wifi_bands[j].start; + end = wifi_bands[i].end = wifi_bands[j].end; + wifi_bands[j].start = 0; + wifi_bands[j].end = 0; + num_of_wbrf_ranges = j; + } + + /* eliminate duplicate entries */ + for (j = i + 1; j < num_of_wbrf_ranges; j++) { + if ((wifi_bands[j].start == start) && (wifi_bands[j].end == end)) { + wifi_bands[j].start = 0; + wifi_bands[j].end = 0; + } + } + } + + /* Send the sorted wifi_bands to PMFW */ + ret = smu_set_wbrf_exclusion_ranges(smu, wifi_bands); + /* Try to set the wifi_bands again */ + if (unlikely(ret == -EBUSY)) { + mdelay(5); + ret = smu_set_wbrf_exclusion_ranges(smu, wifi_bands); + } + + return ret; +} + +/** + * smu_wbrf_event_handler - handle notify events + * + * @nb: notifier block + * @action: event type + * @_arg: event data + * + * Calls relevant amdgpu function in response to wbrf event + * notification from kernel. + */ +static int smu_wbrf_event_handler(struct notifier_block *nb, + unsigned long action, void *_arg) +{ + struct smu_context *smu = container_of(nb, struct smu_context, wbrf_notifier); + + switch (action) { + case WBRF_CHANGED: + schedule_delayed_work(&smu->wbrf_delayed_work, + msecs_to_jiffies(SMU_WBRF_EVENT_HANDLING_PACE)); + break; + default: + return NOTIFY_DONE; + } + + return NOTIFY_OK; +} + +/** + * smu_wbrf_delayed_work_handler - callback on delayed work timer expired + * + * @work: struct work_struct pointer + * + * Flood is over and driver will consume the latest exclusion ranges. + */ +static void smu_wbrf_delayed_work_handler(struct work_struct *work) +{ + struct smu_context *smu = container_of(work, struct smu_context, wbrf_delayed_work.work); + + smu_wbrf_handle_exclusion_ranges(smu); +} + +/** + * smu_wbrf_support_check - check wbrf support + * + * @smu: smu_context pointer + * + * Verifies the ACPI interface whether wbrf is supported. + */ +static void smu_wbrf_support_check(struct smu_context *smu) +{ + struct amdgpu_device *adev = smu->adev; + + smu->wbrf_supported = smu_is_asic_wbrf_supported(smu) && amdgpu_wbrf && + acpi_amd_wbrf_supported_consumer(adev->dev); + + if (smu->wbrf_supported) + dev_info(adev->dev, "RF interference mitigation is supported\n"); +} + +/** + * smu_wbrf_init - init driver wbrf support + * + * @smu: smu_context pointer + * + * Verifies the AMD ACPI interfaces and registers with the wbrf + * notifier chain if wbrf feature is supported. + * Returns 0 on success, error on failure. + */ +static int smu_wbrf_init(struct smu_context *smu) +{ + int ret; + + if (!smu->wbrf_supported) + return 0; + + INIT_DELAYED_WORK(&smu->wbrf_delayed_work, smu_wbrf_delayed_work_handler); + + smu->wbrf_notifier.notifier_call = smu_wbrf_event_handler; + ret = amd_wbrf_register_notifier(&smu->wbrf_notifier); + if (ret) + return ret; + + /* + * Some wifiband exclusion ranges may be already there + * before our driver loaded. To make sure our driver + * is awared of those exclusion ranges. + */ + schedule_delayed_work(&smu->wbrf_delayed_work, + msecs_to_jiffies(SMU_WBRF_EVENT_HANDLING_PACE)); + + return 0; +} + +/** + * smu_wbrf_fini - tear down driver wbrf support + * + * @smu: smu_context pointer + * + * Unregisters with the wbrf notifier chain. + */ +static void smu_wbrf_fini(struct smu_context *smu) +{ + if (!smu->wbrf_supported) + return; + + amd_wbrf_unregister_notifier(&smu->wbrf_notifier); + + cancel_delayed_work_sync(&smu->wbrf_delayed_work); +} + static int smu_smc_hw_setup(struct smu_context *smu) { struct smu_feature *feature = &smu->smu_feature; @@ -1407,6 +1588,15 @@ static int smu_smc_hw_setup(struct smu_context *smu) if (ret) return ret; + /* Enable UclkShadow on wbrf supported */ + if (smu->wbrf_supported) { + ret = smu_enable_uclk_shadow(smu, true); + if (ret) { + dev_err(adev->dev, "Failed to enable UclkShadow feature to support wbrf!\n"); + return ret; + } + } + /* * With SCPM enabled, these actions(and relevant messages) are * not needed and permitted. @@ -1505,6 +1695,15 @@ static int smu_smc_hw_setup(struct smu_context *smu) */ ret = smu_set_min_dcef_deep_sleep(smu, smu->smu_table.boot_values.dcefclk / 100); + if (ret) { + dev_err(adev->dev, "Error setting min deepsleep dcefclk\n"); + return ret; + } + + /* Init wbrf support. Properly setup the notifier */ + ret = smu_wbrf_init(smu); + if (ret) + dev_err(adev->dev, "Error during wbrf init call\n"); return ret; } @@ -1560,6 +1759,13 @@ static int smu_hw_init(void *handle) return ret; } + /* + * Check whether wbrf is supported. This needs to be done + * before SMU setup starts since part of SMU configuration + * relies on this. + */ + smu_wbrf_support_check(smu); + if (smu->is_apu) { ret = smu_set_gfx_imu_enable(smu); if (ret) @@ -1726,6 +1932,8 @@ static int smu_smc_hw_cleanup(struct smu_context *smu) struct amdgpu_device *adev = smu->adev; int ret = 0; + smu_wbrf_fini(smu); + cancel_work_sync(&smu->throttling_logging_work); cancel_work_sync(&smu->interrupt_work); @@ -2980,19 +3188,17 @@ static int smu_set_xgmi_pstate(void *handle, return ret; } -static int smu_get_baco_capability(void *handle, bool *cap) +static bool smu_get_baco_capability(void *handle) { struct smu_context *smu = handle; - *cap = false; - if (!smu->pm_enabled) - return 0; + return false; - if (smu->ppt_funcs && smu->ppt_funcs->baco_is_support) - *cap = smu->ppt_funcs->baco_is_support(smu); + if (!smu->ppt_funcs || !smu->ppt_funcs->baco_is_support) + return false; - return 0; + return smu->ppt_funcs->baco_is_support(smu); } static int smu_baco_set_state(void *handle, int state) @@ -3166,6 +3372,20 @@ static ssize_t smu_sys_get_gpu_metrics(void *handle, void **table) return smu->ppt_funcs->get_gpu_metrics(smu, table); } +static ssize_t smu_sys_get_pm_metrics(void *handle, void *pm_metrics, + size_t size) +{ + struct smu_context *smu = handle; + + if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled) + return -EOPNOTSUPP; + + if (!smu->ppt_funcs->get_pm_metrics) + return -EOPNOTSUPP; + + return smu->ppt_funcs->get_pm_metrics(smu, pm_metrics, size); +} + static int smu_enable_mgpu_fan_boost(void *handle) { struct smu_context *smu = handle; @@ -3307,6 +3527,7 @@ static const struct amd_pm_funcs swsmu_pm_funcs = { .set_df_cstate = smu_set_df_cstate, .set_xgmi_pstate = smu_set_xgmi_pstate, .get_gpu_metrics = smu_sys_get_gpu_metrics, + .get_pm_metrics = smu_sys_get_pm_metrics, .set_watermarks_for_clock_ranges = smu_set_watermarks_for_clock_ranges, .display_disable_memory_clock_switch = smu_display_disable_memory_clock_switch, .get_max_sustainable_clocks_by_dc = smu_get_max_sustainable_clocks_by_dc, |