Merge branch 'fix/intel' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel

1 files changed, 69 insertions, 6 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 333bad749067..2fa95aef74d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -169,6 +169,32 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f)
 }
 
 /**
+ * amdgpu_fence_emit_polling - emit a fence on the requeste ring
+ *
+ * @ring: ring the fence is associated with
+ * @s: resulting sequence number
+ *
+ * Emits a fence command on the requested ring (all asics).
+ * Used For polling fence.
+ * Returns 0 on success, -ENOMEM on failure.
+ */
+int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s)
+{
+	uint32_t seq;
+
+	if (!s)
+		return -EINVAL;
+
+	seq = ++ring->fence_drv.sync_seq;
+	amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,
+			       seq, AMDGPU_FENCE_FLAG_INT);
+
+	*s = seq;
+
+	return 0;
+}
+
+/**
  * amdgpu_fence_schedule_fallback - schedule fallback check
  *
  * @ring: pointer to struct amdgpu_ring
@@ -242,9 +268,10 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
  *
  * Checks for fence activity.
  */
-static void amdgpu_fence_fallback(unsigned long arg)
+static void amdgpu_fence_fallback(struct timer_list *t)
 {
-	struct amdgpu_ring *ring = (void *)arg;
+	struct amdgpu_ring *ring = from_timer(ring, t,
+					      fence_drv.fallback_timer);
 
 	amdgpu_fence_process(ring);
 }
@@ -260,7 +287,7 @@ static void amdgpu_fence_fallback(unsigned long arg)
  */
 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)
 {
-	uint64_t seq = ACCESS_ONCE(ring->fence_drv.sync_seq);
+	uint64_t seq = READ_ONCE(ring->fence_drv.sync_seq);
 	struct dma_fence *fence, **ptr;
 	int r;
 
@@ -282,6 +309,30 @@ int amdgpu_fence_wait_empty(struct amdgpu_ring *ring)
 }
 
 /**
+ * amdgpu_fence_wait_polling - busy wait for givn sequence number
+ *
+ * @ring: ring index the fence is associated with
+ * @wait_seq: sequence number to wait
+ * @timeout: the timeout for waiting in usecs
+ *
+ * Wait for all fences on the requested ring to signal (all asics).
+ * Returns left time if no timeout, 0 or minus if timeout.
+ */
+signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,
+				      uint32_t wait_seq,
+				      signed long timeout)
+{
+	uint32_t seq;
+
+	do {
+		seq = amdgpu_fence_read(ring);
+		udelay(5);
+		timeout -= 5;
+	} while ((int32_t)(wait_seq - seq) > 0 && timeout > 0);
+
+	return timeout > 0 ? timeout : 0;
+}
+/**
  * amdgpu_fence_count_emitted - get the count of emitted fences
  *
  * @ring: ring the fence is associated with
@@ -300,7 +351,7 @@ unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring)
 	amdgpu_fence_process(ring);
 	emitted = 0x100000000ull;
 	emitted -= atomic_read(&ring->fence_drv.last_seq);
-	emitted += ACCESS_ONCE(ring->fence_drv.sync_seq);
+	emitted += READ_ONCE(ring->fence_drv.sync_seq);
 	return lower_32_bits(emitted);
 }
 
@@ -372,8 +423,7 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
 	atomic_set(&ring->fence_drv.last_seq, 0);
 	ring->fence_drv.initialized = false;
 
-	setup_timer(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback,
-		    (unsigned long)ring);
+	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);
 
 	ring->fence_drv.num_fences_mask = num_hw_submission * 2 - 1;
 	spin_lock_init(&ring->fence_drv.lock);
@@ -641,6 +691,19 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
 			   atomic_read(&ring->fence_drv.last_seq));
 		seq_printf(m, "Last emitted        0x%08x\n",
 			   ring->fence_drv.sync_seq);
+
+		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)
+			continue;
+
+		/* set in CP_VMID_PREEMPT and preemption occurred */
+		seq_printf(m, "Last preempted      0x%08x\n",
+			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));
+		/* set in CP_VMID_RESET and reset occurred */
+		seq_printf(m, "Last reset          0x%08x\n",
+			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));
+		/* Both preemption and reset occurred */
+		seq_printf(m, "Last both           0x%08x\n",
+			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));
 	}
 	return 0;
 }