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drm/xe/huc: Don't re-auth HuC if it's already authenticated

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On newer platforms the HuC survives reset and stays authenticated, so no
need to re-authenticate it.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Daniele Ceraolo Spurio 2023-10-25 10:57:44 -07:00 committed by Rodrigo Vivi
parent b77d8b5c5e
commit 185f93f304
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/xe/xe_huc.c
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@ -83,6 +83,12 @@ int xe_huc_auth(struct xe_huc *huc)
xe_assert(xe, !xe_uc_fw_is_running(&huc->fw));
/* On newer platforms the HuC survives reset, so no need to re-auth */
if (xe_mmio_read32(gt, HUC_KERNEL_LOAD_INFO) & HUC_LOAD_SUCCESSFUL) {
xe_uc_fw_change_status(&huc->fw, XE_UC_FIRMWARE_RUNNING);
return 0;
}
if (!xe_uc_fw_is_loaded(&huc->fw))
return -ENOEXEC;