@@ -10,10 +10,11 @@ struct intel_engine_cs;
struct intel_gt;
struct intel_timeline;
-long intel_gt_retire_requests_timeout(struct intel_gt *gt, long timeout);
+long intel_gt_retire_requests_timeout(struct intel_gt *gt, long timeout,
+ long *remaining_timeout);
static inline void intel_gt_retire_requests(struct intel_gt *gt)
{
- intel_gt_retire_requests_timeout(gt, 0);
+ intel_gt_retire_requests_timeout(gt, 0, NULL);
}
void intel_engine_init_retire(struct intel_engine_cs *engine);
@@ -21,8 +22,6 @@ void intel_engine_add_retire(struct intel_engine_cs *engine,
struct intel_timeline *tl);
void intel_engine_fini_retire(struct intel_engine_cs *engine);
-int intel_gt_wait_for_idle(struct intel_gt *gt, long timeout);
-
void intel_gt_init_requests(struct intel_gt *gt);
void intel_gt_park_requests(struct intel_gt *gt);
void intel_gt_unpark_requests(struct intel_gt *gt);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 80b88bae5f24..3cc566565224 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -39,6 +39,8 @@ struct intel_guc {
spinlock_t irq_lock;
unsigned int msg_enabled_mask;
+ atomic_t outstanding_submission_g2h;
+
struct {
void (*reset)(struct intel_guc *guc);
void (*enable)(struct intel_guc *guc);
@@ -238,6 +240,8 @@ static inline void intel_guc_disable_msg(struct intel_guc *guc, u32 mask)
spin_unlock_irq(&guc->irq_lock);
}
+int intel_guc_wait_for_idle(struct intel_guc *guc, long timeout);
+
int intel_guc_reset_engine(struct intel_guc *guc,
struct intel_engine_cs *engine);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index c33906ec478d..f1cbed6b9f0a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -109,6 +109,7 @@ void intel_guc_ct_init_early(struct intel_guc_ct *ct)
INIT_LIST_HEAD(&ct->requests.incoming);
INIT_WORK(&ct->requests.worker, ct_incoming_request_worker_func);
tasklet_setup(&ct->receive_tasklet, ct_receive_tasklet_func);
+ init_waitqueue_head(&ct->wq);
}
static inline const char *guc_ct_buffer_type_to_str(u32 type)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
index 785dfc5c6efb..4b30a562ae63 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -10,6 +10,7 @@
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/ktime.h>
+#include <linux/wait.h>
#include "intel_guc_fwif.h"
@@ -68,6 +69,9 @@ struct intel_guc_ct {
struct tasklet_struct receive_tasklet;
+ /** @wq: wait queue for g2h chanenl */
+ wait_queue_head_t wq;
+
struct {
u16 last_fence; /* last fence used to send request */
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 f7e34baa9506..088d11e2e497 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -254,6 +254,69 @@ static inline void set_lrc_desc_registered(struct intel_guc *guc, u32 id,
xa_store_irq(&guc->context_lookup, id, ce, GFP_ATOMIC);
}
+static int guc_submission_send_busy_loop(struct intel_guc* guc,
+ const u32 *action,
+ u32 len,
+ u32 g2h_len_dw,
+ bool loop)
+{
+ int err;
+
+ err = intel_guc_send_busy_loop(guc, action, len, g2h_len_dw, loop);
+
+ if (!err && g2h_len_dw)
+ atomic_inc(&guc->outstanding_submission_g2h);
+
+ return err;
+}
+
+static int guc_wait_for_pending_msg(struct intel_guc *guc,
+ atomic_t *wait_var,
+ bool interruptible,
+ long timeout)
+{
+ const int state = interruptible ?
+ TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE;
+ DEFINE_WAIT(wait);
+
+ might_sleep();
+ GEM_BUG_ON(timeout < 0);
+
+ if (!atomic_read(wait_var))
+ return 0;
+
+ if (!timeout)
+ return -ETIME;
+
+ for (;;) {
+ prepare_to_wait(&guc->ct.wq, &wait, state);
+
+ if (!atomic_read(wait_var))
+ break;
+
+ if (signal_pending_state(state, current)) {
+ timeout = -EINTR;
+ break;
+ }
+
+ if (!timeout) {
+ timeout = -ETIME;
+ break;
+ }
+
+ timeout = io_schedule_timeout(timeout);
+ }
+ finish_wait(&guc->ct.wq, &wait);
+
+ return (timeout < 0) ? timeout : 0;
+}
+
+int intel_guc_wait_for_idle(struct intel_guc *guc, long timeout)
+{
+ return guc_wait_for_pending_msg(guc, &guc->outstanding_submission_g2h,
+ true, timeout);
+}
+
static int guc_add_request(struct intel_guc *guc, struct i915_request *rq)
{
int err;
@@ -280,6 +343,7 @@ static int guc_add_request(struct intel_guc *guc, struct i915_request *rq)
err = intel_guc_send_nb(guc, action, len, g2h_len_dw);
if (!enabled && !err) {
+ atomic_inc(&guc->outstanding_submission_g2h);
set_context_enabled(ce);
} else if (!enabled) {
clr_context_pending_enable(ce);
@@ -731,7 +795,8 @@ static int __guc_action_register_context(struct intel_guc *guc,
offset,
};
- return intel_guc_send_busy_loop(guc, action, ARRAY_SIZE(action), 0, true);
+ return guc_submission_send_busy_loop(guc, action, ARRAY_SIZE(action),
+ 0, true);
}
static int register_context(struct intel_context *ce)
@@ -751,8 +816,9 @@ static int __guc_action_deregister_context(struct intel_guc *guc,
guc_id,
};
- return intel_guc_send_busy_loop(guc, action, ARRAY_SIZE(action),
- G2H_LEN_DW_DEREGISTER_CONTEXT, true);
+ return guc_submission_send_busy_loop(guc, action, ARRAY_SIZE(action),
+ G2H_LEN_DW_DEREGISTER_CONTEXT,
+ true);
}
static int deregister_context(struct intel_context *ce, u32 guc_id)
@@ -893,8 +959,8 @@ static void __guc_context_sched_disable(struct intel_guc *guc,
intel_context_get(ce);
- intel_guc_send_busy_loop(guc, action, ARRAY_SIZE(action),
- G2H_LEN_DW_SCHED_CONTEXT_MODE_SET, true);
+ guc_submission_send_busy_loop(guc, action, ARRAY_SIZE(action),
+ G2H_LEN_DW_SCHED_CONTEXT_MODE_SET, true);
}
static u16 prep_context_pending_disable(struct intel_context *ce)
@@ -1440,6 +1506,12 @@ g2h_context_lookup(struct intel_guc *guc, u32 desc_idx)
return ce;
}
+static void decr_outstanding_submission_g2h(struct intel_guc *guc)
+{
+ if (atomic_dec_and_test(&guc->outstanding_submission_g2h))
+ wake_up_all(&guc->ct.wq);
+}
+
int intel_guc_deregister_done_process_msg(struct intel_guc *guc,
const u32 *msg,
u32 len)
@@ -1475,6 +1547,8 @@ int intel_guc_deregister_done_process_msg(struct intel_guc *guc,
lrc_destroy(&ce->ref);
}
+ decr_outstanding_submission_g2h(guc);
+
return 0;
}
@@ -1523,6 +1597,7 @@ int intel_guc_sched_done_process_msg(struct intel_guc *guc,
spin_unlock_irqrestore(&ce->guc_state.lock, flags);
}
+ decr_outstanding_submission_g2h(guc);
intel_context_put(ce);
return 0;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.h b/drivers/gpu/drm/i915/gt/uc/intel_uc.h
index 9c954c589edf..c4cef885e984 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.h
@@ -81,6 +81,11 @@ uc_state_checkers(guc, guc_submission);
#undef uc_state_checkers
#undef __uc_state_checker
+static inline int intel_uc_wait_for_idle(struct intel_uc *uc, long timeout)
+{
+ return intel_guc_wait_for_idle(&uc->guc, timeout);
+}
+
#define intel_uc_ops_function(_NAME, _OPS, _TYPE, _RET) \
static inline _TYPE intel_uc_##_NAME(struct intel_uc *uc) \
{ \
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 4d2d59a9942b..2b73ddb11c66 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -27,6 +27,7 @@
*/
#include "gem/i915_gem_context.h"
+#include "gt/intel_gt.h"
