Quoting Daniele Ceraolo Spurio (2018-10-15 19:33:26) > > > On 14/10/18 10:02, Chris Wilson wrote: > > Seems like there's a missing ack before the guc is ready for commands. > > > > I'm assuming you're running without HuC since the HuC auth H2G comes > before this one. https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4981/fi-apl-guc/boot0.log i915.enable_guc=3 <7>[ 6.877175] [drm:intel_uc_fw_fetch [i915]] GuC fw fetch i915/bxt_guc_ver9_29.bin <7>[ 6.877268] [drm:intel_uc_fw_fetch [i915]] GuC fw fetch PENDING <7>[ 6.879780] [drm:intel_uc_fw_fetch [i915]] GuC fw size 146432 ptr 000000003fdb20d0 <7>[ 6.879869] [drm:intel_uc_fw_fetch [i915]] GuC fw version 9.29 (wanted 9.29) <7>[ 6.880425] [drm:intel_uc_fw_fetch [i915]] GuC fw fetch SUCCESS <7>[ 6.880723] [drm:intel_uc_fw_fetch [i915]] HuC fw fetch i915/bxt_huc_ver01_07_1398.bin <7>[ 6.880807] [drm:intel_uc_fw_fetch [i915]] HuC fw fetch PENDING <7>[ 6.882529] [drm:intel_uc_fw_fetch [i915]] HuC fw size 154432 ptr 000000000aad61c4 <7>[ 6.882621] [drm:intel_uc_fw_fetch [i915]] HuC fw version 1.7 (wanted 1.7) <7>[ 6.883098] [drm:intel_uc_fw_fetch [i915]] HuC fw fetch SUCCESS > What we're polling to indicate load completion (GS_UKERNEL_READY) is > definitely what the firmware uses to signal readiness. The other check > we do (GS_MIA_CORE_STATE) should only apply for rc6 scenarios. From what > I can see from the firmware code, all the initialization steps are done > before GS_UKERNEL_READY is written to the status register so there > shouldn't be any missing acks in principle. > Is the GuC returning anything in the scratch 0 register? It should be > printed out by the H2G error message. The value of the status register > (0xc000) could also provide interesting debug info. When do you want to know? As you are probably aware, our first indication of failure is from wait_for_guc_preempt_report() and the wait there on report->report_return_status timing out. Michel asked what was the value when it timed out, but alas apl-guc was not available for comment. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
