drm/i915: GuC-specific firmware loader
This fetches the required firmware image from the filesystem,
then loads it into the GuC's memory via a dedicated DMA engine.
This patch is derived from GuC loading work originally done by
Vinit Azad and Ben Widawsky.
v2:
Various improvements per review comments by Chris Wilson
v3:
Removed 'wait' parameter to intel_guc_ucode_load() as firmware
prefetch is no longer supported in the common firmware loader,
per Daniel Vetter's request.
Firmware checker callback fn now returns errno rather than bool.
v4:
Squash uC-independent code into GuC-specifc loader [Daniel Vetter]
Don't keep the driver working (by falling back to execlist mode)
if GuC firmware loading fails [Daniel Vetter]
v5:
Clarify WOPCM-related #defines [Tom O'Rourke]
Delete obsolete code no longer required with current h/w & f/w
[Tom O'Rourke]
Move the call to intel_guc_ucode_init() later, so that it can
allocate GEM objects, and have it fetch the firmware; then
intel_guc_ucode_load() doesn't need to fetch it later.
[Daniel Vetter].
v6:
Update comment describing intel_guc_ucode_load() [Tom O'Rourke]
Issue: VIZ-4884
Signed-off-by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6b85338..6124445 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -50,6 +50,7 @@
#include <linux/intel-iommu.h>
#include <linux/kref.h>
#include <linux/pm_qos.h>
+#include "intel_guc.h"
/* General customization:
*/
@@ -1709,6 +1710,8 @@
struct i915_virtual_gpu vgpu;
+ struct intel_guc guc;
+
struct intel_csr csr;
/* Display CSR-related protection */
@@ -1953,6 +1956,11 @@
return to_i915(dev_get_drvdata(dev));
}
+static inline struct drm_i915_private *guc_to_i915(struct intel_guc *guc)
+{
+ return container_of(guc, struct drm_i915_private, guc);
+}
+
/* Iterate over initialised rings */
#define for_each_ring(ring__, dev_priv__, i__) \
for ((i__) = 0; (i__) < I915_NUM_RINGS; (i__)++) \
@@ -2557,6 +2565,9 @@
#define HAS_CSR(dev) (IS_SKYLAKE(dev))
+#define HAS_GUC_UCODE(dev) (IS_GEN9(dev))
+#define HAS_GUC_SCHED(dev) (IS_GEN9(dev))
+
#define HAS_RESOURCE_STREAMER(dev) (IS_HASWELL(dev) || \
INTEL_INFO(dev)->gen >= 8)