drm/i915: Implementation of GuC submission client
A GuC client has its own doorbell and workqueue. It maintains the
doorbell cache line, process description object and work queue item.
A default guc_client is created for the i915 driver to use for
normal-priority in-order submission.
Note that the created client is not yet ready for use; doorbell
allocation will fail as we haven't yet linked the GuC's context
descriptor to the default contexts for each ring (see later patch).
v2:
Defer adding structure members until needed [Chris Wilson]
Rationalise type declarations [Chris Wilson]
v5:
Add GuC per-engine submission & seqno statistics.
Move wq locking to encompass both get_space() and add_item().
Take forcewake lock in host2guc_action() [Tom O'Rourke]
v6:
Fix GuC doorbell cacheline selection code (the
cacheline-within-page calculation was wrong).
Rename GuC priorities to make them closer to the names used in
the GuC firmware source, matching what the autogenerated
versions will (probably) be.
Add per-ring statistics to client.
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/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 5b51b05..92658ce 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -27,6 +27,31 @@
#include "intel_guc_fwif.h"
#include "i915_guc_reg.h"
+struct i915_guc_client {
+ struct drm_i915_gem_object *client_obj;
+ struct intel_guc *guc;
+ uint32_t priority;
+ uint32_t ctx_index;
+
+ uint32_t proc_desc_offset;
+ uint32_t doorbell_offset;
+ uint32_t cookie;
+ uint16_t doorbell_id;
+ uint16_t padding; /* Maintain alignment */
+
+ uint32_t wq_offset;
+ uint32_t wq_size;
+
+ spinlock_t wq_lock; /* Protects all data below */
+ uint32_t wq_tail;
+
+ /* GuC submission statistics & status */
+ uint64_t submissions[I915_NUM_RINGS];
+ uint32_t q_fail;
+ uint32_t b_fail;
+ int retcode;
+};
+
enum intel_guc_fw_status {
GUC_FIRMWARE_FAIL = -1,
GUC_FIRMWARE_NONE = 0,
@@ -60,6 +85,23 @@
struct drm_i915_gem_object *ctx_pool_obj;
struct ida ctx_ids;
+
+ struct i915_guc_client *execbuf_client;
+
+ spinlock_t host2guc_lock; /* Protects all data below */
+
+ DECLARE_BITMAP(doorbell_bitmap, GUC_MAX_DOORBELLS);
+ uint32_t db_cacheline; /* Cyclic counter mod pagesize */
+
+ /* Action status & statistics */
+ uint64_t action_count; /* Total commands issued */
+ uint32_t action_cmd; /* Last command word */
+ uint32_t action_status; /* Last return status */
+ uint32_t action_fail; /* Total number of failures */
+ int32_t action_err; /* Last error code */
+
+ uint64_t submissions[I915_NUM_RINGS];
+ uint32_t last_seqno[I915_NUM_RINGS];
};
/* intel_guc_loader.c */
@@ -70,6 +112,10 @@
/* i915_guc_submission.c */
int i915_guc_submission_init(struct drm_device *dev);
+int i915_guc_submission_enable(struct drm_device *dev);
+int i915_guc_submit(struct i915_guc_client *client,
+ struct drm_i915_gem_request *rq);
+void i915_guc_submission_disable(struct drm_device *dev);
void i915_guc_submission_fini(struct drm_device *dev);
#endif