The address needs to be a GART relative address, rather than a PCI
DMA address.
Signed-off-by: David S. Miller <da...@davemloft.net>
---
drivers/gpu/drm/radeon/radeon_cp.c | 15 ++++-----------
1 files changed, 4 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c
b/drivers/gpu/drm/radeon/radeon_cp.c
index 9053755..e235778 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -655,17 +655,10 @@ static void radeon_cp_init_ring_buffer(struct drm_device
* dev,
} else
#endif
{
- struct drm_sg_mem *entry = dev->sg;
- unsigned long tmp_ofs, page_ofs;
-
- tmp_ofs = dev_priv->ring_rptr->offset -
- (unsigned long)dev->sg->virtual;
- page_ofs = tmp_ofs >> PAGE_SHIFT;
-
- RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR, entry->busaddr[page_ofs]);
- DRM_DEBUG("ring rptr: offset=0x%08lx handle=0x%08lx\n",
- (unsigned long)entry->busaddr[page_ofs],
- entry->handle + tmp_ofs);
+ RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR,
+ dev_priv->ring_rptr->offset
+ - ((unsigned long) dev->sg->virtual)
+ + dev_priv->gart_vm_start);
}
/* Set ring buffer size */
--
1.6.1.2.350.g88cc
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