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Rev 5078 Rev 5271
Line 43... Line 43...
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 * them until the pointers are equal again.
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 * them until the pointers are equal again.
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 */
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 */
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static int radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring);
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static int radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring);
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/**
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 * radeon_ring_write - write a value to the ring
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 *
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 * @ring: radeon_ring structure holding ring information
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 * @v: dword (dw) value to write
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 *
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 * Write a value to the requested ring buffer (all asics).
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 */
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void radeon_ring_write(struct radeon_ring *ring, uint32_t v)
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{
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#if DRM_DEBUG_CODE
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	if (ring->count_dw <= 0) {
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		DRM_ERROR("radeon: writing more dwords to the ring than expected!\n");
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	}
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#endif
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	ring->ring[ring->wptr++] = v;
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	ring->wptr &= ring->ptr_mask;
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	ring->count_dw--;
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	ring->ring_free_dw--;
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}
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/**
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/**
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 * radeon_ring_supports_scratch_reg - check if the ring supports
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 * radeon_ring_supports_scratch_reg - check if the ring supports
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 * writing to scratch registers
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 * writing to scratch registers
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 *
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 *
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 * @rdev: radeon_device pointer
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 * @rdev: radeon_device pointer
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	ring->rptr_offs = rptr_offs;
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	ring->rptr_offs = rptr_offs;
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	ring->nop = nop;
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	ring->nop = nop;
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	/* Allocate ring buffer */
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	/* Allocate ring buffer */
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	if (ring->ring_obj == NULL) {
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	if (ring->ring_obj == NULL) {
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		r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
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		r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
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				     RADEON_GEM_DOMAIN_GTT, 0,
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				     RADEON_GEM_DOMAIN_GTT, 0, NULL,
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				     NULL, &ring->ring_obj);
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				     NULL, &ring->ring_obj);
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		if (r) {
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		if (r) {
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			dev_err(rdev->dev, "(%d) ring create failed\n", r);
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			dev_err(rdev->dev, "(%d) ring create failed\n", r);
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			return r;
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			return r;
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		}
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		}