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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 855e2196657a..9bec91484c24 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -131,6 +131,21 @@ int amdgpu_ring_lock(struct amdgpu_ring *ring, unsigned ndw)
return 0;
}
+/** amdgpu_ring_insert_nop - insert NOP packets
+ *
+ * @ring: amdgpu_ring structure holding ring information
+ * @count: the number of NOP packets to insert
+ *
+ * This is the generic insert_nop function for rings except SDMA
+ */
+void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ amdgpu_ring_write(ring, ring->nop);
+}
+
/**
* amdgpu_ring_commit - tell the GPU to execute the new
* commands on the ring buffer
@@ -143,10 +158,13 @@ int amdgpu_ring_lock(struct amdgpu_ring *ring, unsigned ndw)
*/
void amdgpu_ring_commit(struct amdgpu_ring *ring)
{
+ uint32_t count;
+
/* We pad to match fetch size */
- while (ring->wptr & ring->align_mask) {
- amdgpu_ring_write(ring, ring->nop);
- }
+ count = ring->align_mask + 1 - (ring->wptr & ring->align_mask);
+ count %= ring->align_mask + 1;
+ ring->funcs->insert_nop(ring, count);
+
mb();
amdgpu_ring_set_wptr(ring);
}
@@ -342,6 +360,8 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
amdgpu_fence_driver_init_ring(ring);
}
+ init_waitqueue_head(&ring->fence_drv.fence_queue);
+
r = amdgpu_wb_get(adev, &ring->rptr_offs);
if (r) {
dev_err(adev->dev, "(%d) ring rptr_offs wb alloc failed\n", r);
@@ -367,7 +387,7 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
}
ring->next_rptr_gpu_addr = adev->wb.gpu_addr + (ring->next_rptr_offs * 4);
ring->next_rptr_cpu_addr = &adev->wb.wb[ring->next_rptr_offs];
-
+ spin_lock_init(&ring->fence_lock);
r = amdgpu_fence_driver_start_ring(ring, irq_src, irq_type);
if (r) {
dev_err(adev->dev, "failed initializing fences (%d).\n", r);