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| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2023-10-25 19:57:44 +0200 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 17:43:23 +0100 |
| commit | 185f93f3041fe520c6df16a58bea116077d3f848 (patch) | |
| tree | 5bfee2065c2f0a07439ffda49c090c5b0e70e461 /drivers/gpu/drm/xe/xe_huc.c | |
| parent | drm/xe/huc: HuC is not supported on GTs that don't have video engines (diff) | |
| download | linux-185f93f3041fe520c6df16a58bea116077d3f848.tar.xz linux-185f93f3041fe520c6df16a58bea116077d3f848.zip | |
drm/xe/huc: Don't re-auth HuC if it's already authenticated
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>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_huc.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_huc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_huc.c b/drivers/gpu/drm/xe/xe_huc.c index 386efa180c1c..2f176badab26 100644 --- a/drivers/gpu/drm/xe/xe_huc.c +++ b/drivers/gpu/drm/xe/xe_huc.c @@ -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; |