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radeon: set the address to access the GART table on the CPU side correctly 

This code relied on the CPU and GPU address for the aperture being the same,
On some r5xx hardware I was playing with I noticed that this isn't always true.
This fixes issues seen on some r400 cards. (bugs.freedesktop.org 9957)

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2007-11-05 10:45:27 +10:00
parent 5da0c7aad6
commit 7fc86860cf
2 changed files with 4 additions and 2 deletions
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5
drivers/char/drm/radeon_cp.c
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@ -1679,7 +1679,7 @@ static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init)
dev_priv->gart_info.bus_addr =
dev_priv->pcigart_offset + dev_priv->fb_location;
dev_priv->gart_info.mapping.offset =
dev_priv->gart_info.bus_addr;
dev_priv->pcigart_offset + dev_priv->fb_aper_offset;
dev_priv->gart_info.mapping.size =
dev_priv->gart_info.table_size;
@ -2275,7 +2275,8 @@ int radeon_driver_firstopen(struct drm_device *dev)
if (ret != 0)
return ret;
ret = drm_addmap(dev, drm_get_resource_start(dev, 0),
dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0);
ret = drm_addmap(dev, dev_priv->fb_aper_offset,
drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
_DRM_WRITE_COMBINING, &map);
if (ret != 0)

1
drivers/char/drm/radeon_drv.h
View File

@ -293,6 +293,7 @@ typedef struct drm_radeon_private {
/* starting from here on, data is preserved accross an open */
uint32_t flags; /* see radeon_chip_flags */
unsigned long fb_aper_offset;
} drm_radeon_private_t;
typedef struct drm_radeon_buf_priv {