diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_huc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_huc.c | 108 |
1 files changed, 75 insertions, 33 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.c b/drivers/gpu/drm/i915/gt/uc/intel_huc.c index ddd146265beb..456d3372eef8 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_huc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.c @@ -6,6 +6,7 @@ #include <linux/types.h> #include "gt/intel_gt.h" +#include "gt/intel_rps.h" #include "intel_guc_reg.h" #include "intel_huc.h" #include "intel_huc_print.h" @@ -26,6 +27,7 @@ * The kernel driver is only responsible for loading the HuC firmware and * triggering its security authentication. This is done differently depending * on the platform: + * * - older platforms (from Gen9 to most Gen12s): the load is performed via DMA * and the authentication via GuC * - DG2: load and authentication are both performed via GSC. @@ -33,6 +35,7 @@ * not-DG2 older platforms), while the authentication is done in 2-steps, * a first auth for clear-media workloads via GuC and a second one for all * workloads via GSC. + * * On platforms where the GuC does the authentication, to correctly do so the * HuC binary must be loaded before the GuC one. * Loading the HuC is optional; however, not using the HuC might negatively @@ -228,8 +231,8 @@ static void delayed_huc_load_init(struct intel_huc *huc) sw_fence_dummy_notify); i915_sw_fence_commit(&huc->delayed_load.fence); - hrtimer_init(&huc->delayed_load.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - huc->delayed_load.timer.function = huc_delayed_load_timer_callback; + hrtimer_setup(&huc->delayed_load.timer, huc_delayed_load_timer_callback, CLOCK_MONOTONIC, + HRTIMER_MODE_REL); } static void delayed_huc_load_fini(struct intel_huc *huc) @@ -265,7 +268,7 @@ static bool vcs_supported(struct intel_gt *gt) GEM_BUG_ON(!gt_is_root(gt) && !gt->info.engine_mask); if (gt_is_root(gt)) - mask = RUNTIME_INFO(gt->i915)->platform_engine_mask; + mask = INTEL_INFO(gt->i915)->platform_engine_mask; else mask = gt->info.engine_mask; @@ -308,12 +311,17 @@ void intel_huc_init_early(struct intel_huc *huc) huc->status[INTEL_HUC_AUTH_BY_GSC].mask = HUC_LOAD_SUCCESSFUL; huc->status[INTEL_HUC_AUTH_BY_GSC].value = HUC_LOAD_SUCCESSFUL; } else { - huc->status[INTEL_HUC_AUTH_BY_GSC].reg = HECI_FWSTS5(MTL_GSC_HECI1_BASE); - huc->status[INTEL_HUC_AUTH_BY_GSC].mask = HECI_FWSTS5_HUC_AUTH_DONE; - huc->status[INTEL_HUC_AUTH_BY_GSC].value = HECI_FWSTS5_HUC_AUTH_DONE; + huc->status[INTEL_HUC_AUTH_BY_GSC].reg = HECI_FWSTS(MTL_GSC_HECI1_BASE, 5); + huc->status[INTEL_HUC_AUTH_BY_GSC].mask = HECI1_FWSTS5_HUC_AUTH_DONE; + huc->status[INTEL_HUC_AUTH_BY_GSC].value = HECI1_FWSTS5_HUC_AUTH_DONE; } } +void intel_huc_fini_late(struct intel_huc *huc) +{ + delayed_huc_load_fini(huc); +} + #define HUC_LOAD_MODE_STRING(x) (x ? "GSC" : "legacy") static int check_huc_loading_mode(struct intel_huc *huc) { @@ -382,7 +390,7 @@ int intel_huc_init(struct intel_huc *huc) if (HAS_ENGINE(gt, GSC0)) { struct i915_vma *vma; - vma = intel_guc_allocate_vma(>->uc.guc, PXP43_HUC_AUTH_INOUT_SIZE * 2); + vma = intel_guc_allocate_vma(gt_to_guc(gt), PXP43_HUC_AUTH_INOUT_SIZE * 2); if (IS_ERR(vma)) { err = PTR_ERR(vma); huc_info(huc, "Failed to allocate heci pkt\n"); @@ -411,12 +419,6 @@ out: void intel_huc_fini(struct intel_huc *huc) { - /* - * the fence is initialized in init_early, so we need to clean it up - * even if HuC loading is off. - */ - delayed_huc_load_fini(huc); - if (huc->heci_pkt) i915_vma_unpin_and_release(&huc->heci_pkt, 0); @@ -424,19 +426,6 @@ void intel_huc_fini(struct intel_huc *huc) intel_uc_fw_fini(&huc->fw); } -void intel_huc_suspend(struct intel_huc *huc) -{ - if (!intel_uc_fw_is_loadable(&huc->fw)) - return; - - /* - * in the unlikely case that we're suspending before the GSC has - * completed its loading sequence, just stop waiting. We'll restart - * on resume. - */ - delayed_huc_load_complete(huc); -} - static const char *auth_mode_string(struct intel_huc *huc, enum intel_huc_authentication_type type) { @@ -445,17 +434,70 @@ static const char *auth_mode_string(struct intel_huc *huc, return partial ? "clear media" : "all workloads"; } +/* + * Use a longer timeout for debug builds so that problems can be detected + * and analysed. But a shorter timeout for releases so that user's don't + * wait forever to find out there is a problem. Note that the only reason + * an end user should hit the timeout is in case of extreme thermal throttling. + * And a system that is that hot during boot is probably dead anyway! + */ +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM) +#define HUC_LOAD_RETRY_LIMIT 20 +#else +#define HUC_LOAD_RETRY_LIMIT 3 +#endif + int intel_huc_wait_for_auth_complete(struct intel_huc *huc, enum intel_huc_authentication_type type) { struct intel_gt *gt = huc_to_gt(huc); - int ret; + struct intel_uncore *uncore = gt->uncore; + ktime_t before, after, delta; + int ret, count; + u64 delta_ms; + u32 before_freq; - ret = __intel_wait_for_register(gt->uncore, - huc->status[type].reg, - huc->status[type].mask, - huc->status[type].value, - 2, 50, NULL); + /* + * The KMD requests maximum frequency during driver load, however thermal + * throttling can force the frequency down to minimum (although the board + * really should never get that hot in real life!). IFWI issues have been + * seen to cause sporadic failures to grant the higher frequency. And at + * minimum frequency, the authentication time can be in the seconds range. + * Note that there is a limit on how long an individual wait_for() can wait. + * So wrap it in a loop. + */ + before_freq = intel_rps_read_actual_frequency(>->rps); + before = ktime_get(); + for (count = 0; count < HUC_LOAD_RETRY_LIMIT; count++) { + ret = __intel_wait_for_register(gt->uncore, + huc->status[type].reg, + huc->status[type].mask, + huc->status[type].value, + 2, 1000, NULL); + if (!ret) + break; + + huc_dbg(huc, "auth still in progress, count = %d, freq = %dMHz, status = 0x%08X\n", + count, intel_rps_read_actual_frequency(>->rps), + huc->status[type].reg.reg); + } + after = ktime_get(); + delta = ktime_sub(after, before); + delta_ms = ktime_to_ms(delta); + + if (delta_ms > 50) { + huc_warn(huc, "excessive auth time: %lldms! [status = 0x%08X, count = %d, ret = %d]\n", + delta_ms, huc->status[type].reg.reg, count, ret); + huc_warn(huc, "excessive auth time: [freq = %dMHz -> %dMHz vs %dMHz, perf_limit_reasons = 0x%08X]\n", + before_freq, intel_rps_read_actual_frequency(>->rps), + intel_rps_get_requested_frequency(>->rps), + intel_uncore_read(uncore, intel_gt_perf_limit_reasons_reg(gt))); + } else { + huc_dbg(huc, "auth took %lldms, freq = %dMHz -> %dMHz vs %dMHz, status = 0x%08X, count = %d, ret = %d\n", + delta_ms, before_freq, intel_rps_read_actual_frequency(>->rps), + intel_rps_get_requested_frequency(>->rps), + huc->status[type].reg.reg, count, ret); + } /* mark the load process as complete even if the wait failed */ delayed_huc_load_complete(huc); @@ -486,7 +528,7 @@ int intel_huc_wait_for_auth_complete(struct intel_huc *huc, int intel_huc_auth(struct intel_huc *huc, enum intel_huc_authentication_type type) { struct intel_gt *gt = huc_to_gt(huc); - struct intel_guc *guc = >->uc.guc; + struct intel_guc *guc = gt_to_guc(gt); int ret; if (!intel_uc_fw_is_loaded(&huc->fw)) |