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drm/i915: Make intel_uc_sanitize_options() more robust 

After negative guc fw selection we could leave guc
submission flag still turned on. Reorder some checks
to cover this case. While here, fix info message and
return early if there is no Guc.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
[tursulin: fixup bad alignment]
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170315133741.150420-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2017-03-15 13:37:41 +00:00 committed by Tvrtko Ursulin
parent 6833b82e98
commit d4a70a10f5
1 changed files with 17 additions and 12 deletions
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29
drivers/gpu/drm/i915/intel_uc.c
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@ -50,23 +50,20 @@ static int __intel_uc_reset_hw(struct drm_i915_private *dev_priv)
void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
{
if (!HAS_GUC(dev_priv)) {
if (i915.enable_guc_loading > 0)
DRM_INFO("Ignoring GuC options, no hardware");
if (i915.enable_guc_loading > 0 ||
i915.enable_guc_submission > 0)
DRM_INFO("Ignoring GuC options, no hardware\n");
i915.enable_guc_loading = 0;
i915.enable_guc_submission = 0;
} else {
/* A negative value means "use platform default" */
if (i915.enable_guc_loading < 0)
i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
if (i915.enable_guc_submission < 0)
i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
/* Can't enable guc submission without guc loaded */
if (!i915.enable_guc_loading)
i915.enable_guc_submission = 0;
return;
}
/* A negative value means "use platform default" */
if (i915.enable_guc_loading < 0)
i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
/* Verify firmware version */
if (i915.enable_guc_loading) {
if (HAS_HUC_UCODE(dev_priv))
intel_huc_select_fw(&dev_priv->huc);
@ -74,6 +71,14 @@ void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
if (intel_guc_select_fw(&dev_priv->guc))
i915.enable_guc_loading = 0;
}
/* Can't enable guc submission without guc loaded */
if (!i915.enable_guc_loading)
i915.enable_guc_submission = 0;
/* A negative value means "use platform default" */
if (i915.enable_guc_submission < 0)
i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
}
void intel_uc_init_early(struct drm_i915_private *dev_priv)