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drm/i915/uc: Don't fail on HuC firmware failure

Browse source 
HuC is usually not a critical component, so we can safely ignore
firmware load or authentication failures unless HuC was explicitly
requested by the user.

v2: add convenient way to disable loading (Chris)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> #v1
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190729112612.37476-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2019-07-29 11:26:12 +00:00 committed by Chris Wilson
parent ed32f8d42c
commit 301efe96f7
3 changed files with 13 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpu/drm/i915/gt/uc/intel_uc.c
View file

@ -422,7 +422,7 @@ int intel_uc_init_hw(struct intel_uc *uc)
if (intel_uc_is_using_huc(uc)) {
ret = intel_huc_fw_upload(huc);
if (ret)
if (ret && intel_uc_fw_is_overridden(&huc->fw))
goto err_out;
}
@ -444,9 +444,9 @@ int intel_uc_init_hw(struct intel_uc *uc)
if (ret)
goto err_log_capture;
if (intel_uc_is_using_huc(uc)) {
if (intel_uc_fw_is_loaded(&huc->fw)) {
ret = intel_huc_auth(huc);
if (ret)
if (ret && intel_uc_fw_is_overridden(&huc->fw))
goto err_communication;
}
@ -465,7 +465,7 @@ int intel_uc_init_hw(struct intel_uc *uc)
dev_info(i915->drm.dev, "GuC submission %s\n",
enableddisabled(intel_uc_is_using_guc_submission(uc)));
dev_info(i915->drm.dev, "HuC %s\n",
enableddisabled(intel_uc_is_using_huc(uc)));
enableddisabled(intel_huc_is_authenticated(huc)));
return 0;

5
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
View file

@ -146,7 +146,8 @@ __uc_fw_override(struct intel_uc_fw *uc_fw)
break;
}
return uc_fw->path;
uc_fw->user_overridden = uc_fw->path;
return uc_fw->user_overridden;
}
/**
@ -176,7 +177,7 @@ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
__uc_fw_auto_select(uc_fw, INTEL_INFO(i915)->platform,
INTEL_REVID(i915));
if (uc_fw->path)
if (uc_fw->path && *uc_fw->path)
uc_fw->status = INTEL_UC_FIRMWARE_SELECTED;
else
uc_fw->status = INTEL_UC_FIRMWARE_NOT_SUPPORTED;

6
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
View file

@ -61,6 +61,7 @@ struct intel_uc_fw {
enum intel_uc_fw_type type;
enum intel_uc_fw_status status;
const char *path;
bool user_overridden;
size_t size;
struct drm_i915_gem_object *obj;
@ -141,6 +142,11 @@ static inline bool intel_uc_fw_supported(struct intel_uc_fw *uc_fw)
return __intel_uc_fw_status(uc_fw) != INTEL_UC_FIRMWARE_NOT_SUPPORTED;
}
static inline bool intel_uc_fw_is_overridden(const struct intel_uc_fw *uc_fw)
{
return uc_fw->user_overridden;
}
static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
{
if (intel_uc_fw_is_loaded(uc_fw))