In the process of preparing to reuse the request submission logic for
other backends, lift it out of the execlists backend.
While this operates on the common structs, we do have a bit of backend
knowledge, which is harmless for !lrc but still unsightly.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine.h | 3 -
.../drm/i915/gt/intel_execlists_submission.c | 58 ++-----------------
drivers/gpu/drm/i915/gt/intel_lrc_reg.h | 3 +
drivers/gpu/drm/i915/gt/selftest_execlists.c | 2 +-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 3 +-
drivers/gpu/drm/i915/i915_scheduler.c | 44 ++++++++++++++
drivers/gpu/drm/i915/i915_scheduler.h | 3 +
7 files changed, 56 insertions(+), 60 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index 8d9184920c51..cc2df80eb449 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -137,9 +137,6 @@ execlists_active_unlock_bh(struct intel_engine_execlists *execlists)
local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
}
-struct i915_request *
-execlists_unwind_incomplete_requests(struct intel_engine_execlists *execlists);
-
static inline u32
intel_read_status_page(const struct intel_engine_cs *engine, int reg)
{
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 7b426e461ce3..9fe9df794126 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -360,56 +360,6 @@ assert_priority_queue(const struct i915_request *prev,
return rq_prio(prev) >= rq_prio(next);
}
-static struct i915_request *
-__unwind_incomplete_requests(struct intel_engine_cs *engine)
-{
- struct i915_request *rq, *rn, *active = NULL;
- struct list_head *pl;
- int prio = I915_PRIORITY_INVALID;
-
- lockdep_assert_held(&engine->active.lock);
-
- list_for_each_entry_safe_reverse(rq, rn,
- &engine->active.requests,
- sched.link) {
- if (__i915_request_is_complete(rq)) {
- list_del_init(&rq->sched.link);
- continue;
- }
-
- __i915_request_unsubmit(rq);
-
- GEM_BUG_ON(rq_prio(rq) == I915_PRIORITY_INVALID);
- if (rq_prio(rq) != prio) {
- prio = rq_prio(rq);
- pl = i915_sched_lookup_priolist(engine, prio);
- }
- GEM_BUG_ON(RB_EMPTY_ROOT(&engine->execlists.queue.rb_root));
-
- list_move(&rq->sched.link, pl);
- set_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
-
- /* Check in case we rollback so far we wrap [size/2] */
- if (intel_ring_direction(rq->ring,
- rq->tail,
- rq->ring->tail + 8) > 0)
- rq->context->lrc.desc |= CTX_DESC_FORCE_RESTORE;
-
- active = rq;
- }
-
- return active;
-}
-
-struct i915_request *
-execlists_unwind_incomplete_requests(struct intel_engine_execlists *execlists)
-{
- struct intel_engine_cs *engine =
- container_of(execlists, typeof(*engine), execlists);
-
- return __unwind_incomplete_requests(engine);
-}
-
static void
execlists_context_status_change(struct i915_request *rq, unsigned long status)
{
@@ -1081,7 +1031,7 @@ static void defer_active(struct intel_engine_cs *engine)
{
struct i915_request *rq;
- rq = __unwind_incomplete_requests(engine);
+ rq = __i915_sched_rewind_requests(engine);
if (!rq)
return;
@@ -1293,7 +1243,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
* the preemption, some of the unwound requests may
* complete!
*/
- __unwind_incomplete_requests(engine);
+ __i915_sched_rewind_requests(engine);
last = NULL;
} else if (timeslice_expired(engine, last)) {
@@ -2288,7 +2238,7 @@ static void execlists_capture(struct intel_engine_cs *engine)
* which we return it to the queue for signaling.
*
* By removing them from the execlists queue, we also remove the
- * requests from being processed by __unwind_incomplete_requests()
+ * requests from being processed by __intel_engine_rewind_requests()
* during the intel_engine_reset(), and so they will *not* be replayed
* afterwards.
*
@@ -2898,7 +2848,7 @@ static void execlists_reset_rewind(struct intel_engine_cs *engine, bool stalled)
/* Push back any incomplete requests for replay after the reset. */
rcu_read_lock();
spin_lock_irqsave(&engine->active.lock, flags);
- __unwind_incomplete_requests(engine);
+ __i915_sched_rewind_requests(engine);
spin_unlock_irqrestore(&engine->active.lock, flags);
rcu_read_unlock();
}
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc_reg.h b/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
index 41e5350a7a05..364656bedec7 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
+++ b/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
@@ -92,4 +92,7 @@
/* in Gen12 ID 0x7FF is reserved to indicate idle */
#define GEN12_MAX_CONTEXT_HW_ID (GEN11_MAX_CONTEXT_HW_ID - 1)
+#define CTX_DESC_RELOAD_PD BIT_ULL(1)
+#define CTX_DESC_FORCE_RESTORE BIT_ULL(2)
+
#endif /* _INTEL_LRC_REG_H_ */
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 951e2bf867e1..9ec720b23a5f 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -4582,7 +4582,7 @@ static int reset_virtual_engine(struct intel_gt *gt,
/* Fake a preemption event; failed of course */
spin_lock_irq(&engine->active.lock);
- __unwind_incomplete_requests(engine);
+ __i915_sched_rewind_requests(engine);
spin_unlock_irq(&engine->active.lock);
GEM_BUG_ON(rq->engine != engine);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index aa34a2f3d6d5..186c8601689e 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -315,14 +315,13 @@ static void guc_reset_state(struct intel_context *ce,
static void guc_reset_rewind(struct intel_engine_cs *engine, bool stalled)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
struct i915_request *rq;
unsigned long flags;
spin_lock_irqsave(&engine->active.lock, flags);
/* Push back any incomplete requests for replay after the reset. */
- rq = execlists_unwind_incomplete_requests(execlists);
+ rq = __i915_sched_rewind_requests(engine);
if (!rq)
goto out_unlock;
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
index a56252d3546a..6c0654bc49a8 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -6,6 +6,9 @@
#include <linux/mutex.h>
+#include "gt/intel_ring.h"
+#include "gt/intel_lrc_reg.h"
+
#include "i915_drv.h"
#include "i915_globals.h"
#include "i915_request.h"
@@ -542,6 +545,47 @@ void i915_request_enqueue(struct i915_request *rq)
tasklet_hi_schedule(&engine->execlists.tasklet);
}
+struct i915_request *
+__i915_sched_rewind_requests(struct intel_engine_cs *engine)
+{
+ struct i915_request *rq, *rn, *active = NULL;
+ struct list_head *pl;
+ int prio = I915_PRIORITY_INVALID;
+
+ lockdep_assert_held(&engine->active.lock);
+
+ list_for_each_entry_safe_reverse(rq, rn,
+ &engine->active.requests,
+ sched.link) {
+ if (__i915_request_is_complete(rq)) {
+ list_del_init(&rq->sched.link);
+ continue;
+ }
+
+ __i915_request_unsubmit(rq);
+
+ GEM_BUG_ON(rq_prio(rq) == I915_PRIORITY_INVALID);
+ if (rq_prio(rq) != prio) {
+ prio = rq_prio(rq);
+ pl = i915_sched_lookup_priolist(engine, prio);
+ }
+ GEM_BUG_ON(RB_EMPTY_ROOT(&engine->execlists.queue.rb_root));
+
+ list_move(&rq->sched.link, pl);
+ set_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
+
+ /* Check in case we rollback so far we wrap [size/2] */
+ if (intel_ring_direction(rq->ring,
+ rq->tail,
+ rq->ring->tail + 8) > 0)
+ rq->context->lrc.desc |= CTX_DESC_FORCE_RESTORE;
+
+ active = rq;
+ }
+
+ return active;
+}
+
void i915_sched_node_init(struct i915_sched_node *node)
{
spin_lock_init(&node->lock);
diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h
index 89d998f226e0..d3984f65b3a6 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.h
+++ b/drivers/gpu/drm/i915/i915_scheduler.h
@@ -42,6 +42,9 @@ void i915_request_set_priority(struct i915_request *request, int prio);
void i915_request_enqueue(struct i915_request *request);
+struct i915_request *
+__i915_sched_rewind_requests(struct intel_engine_cs *engine);
+
struct list_head *
i915_sched_lookup_priolist(struct intel_engine_cs *engine, int prio);
--
2.20.1
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