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drm/i915/huc: Mark firmware as failed on auth failure 

If we fail to authenticate HuC firmware, we should change
its load status to FAIL. While around, print HUC_STATUS
on firmware verification failure.

v2: keep the variables sorted by length (Chris)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180302133718.1260-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2018-03-02 13:37:17 +00:00 committed by Chris Wilson
parent 7cfca4afd6
commit 7b026763cf
1 changed files with 18 additions and 10 deletions
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22
drivers/gpu/drm/i915/intel_huc.c
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@ -48,6 +48,7 @@ int intel_huc_auth(struct intel_huc *huc)
struct drm_i915_private *i915 = huc_to_i915(huc);
struct intel_guc *guc = &i915->guc;
struct i915_vma *vma;
u32 status;
int ret;
if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
@ -58,28 +59,35 @@ int intel_huc_auth(struct intel_huc *huc)
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
DRM_ERROR("HuC: Failed to pin huc fw object %d\n", ret);
return ret;
goto fail;
}
ret = intel_guc_auth_huc(guc,
guc_ggtt_offset(vma) + huc->fw.rsa_offset);
if (ret) {
DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret);
goto out;
goto fail_unpin;
}
/* Check authentication status, it should be done by now */
ret = intel_wait_for_register(i915,
ret = __intel_wait_for_register(i915,
HUC_STATUS2,
HUC_FW_VERIFIED,
HUC_FW_VERIFIED,
50);
2, 50, &status);
if (ret) {
DRM_ERROR("HuC: Authentication failed %d\n", ret);
goto out;
DRM_ERROR("HuC: Firmware not verified %#x\n", status);
goto fail_unpin;
}
out:
i915_vma_unpin(vma);
return 0;
fail_unpin:
i915_vma_unpin(vma);
fail:
huc->fw.load_status = INTEL_UC_FIRMWARE_FAIL;
DRM_ERROR("HuC: Authentication failed %d\n", ret);
return ret;
}