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drm: radeon: Fix ring_rptr accesses.

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The memory behind ring_rptr can either be in ioremapped memory
or a vmalloc() normal kernel memory buffer.

However, the code unconditionally uses DRM_{READ,WRITE}32() (and thus
readl() and writel()) to access it.

Basically, if RADEON_IS_AGP then it's ioremap()'d memory else it's
vmalloc'd memory.

Adjust all of the ring_rptr access code as needed.

While we're here, kill the 'scratch' pointer in drm_radeon_private.
It's only used in the one place where it is initialized.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
David Miller
2009-02-12 02:15:37 -08:00
committed by Dave Airlie
parent 296c6ae0e9
commit b07fa022ec
3 changed files with 70 additions and 23 deletions
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17
drivers/gpu/drm/radeon/radeon_drv.h
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@@ -160,10 +160,6 @@ enum radeon_chip_flags {
RADEON_IS_IGPGART = 0x01000000UL,
};
#define GET_RING_HEAD(dev_priv) (dev_priv->writeback_works ? \
DRM_READ32( (dev_priv)->ring_rptr, 0 ) : RADEON_READ(RADEON_CP_RB_RPTR))
#define SET_RING_HEAD(dev_priv,val) DRM_WRITE32( (dev_priv)->ring_rptr, 0, (val) )
typedef struct drm_radeon_freelist {
unsigned int age;
struct drm_buf *buf;
@@ -248,7 +244,6 @@ typedef struct drm_radeon_private {
drm_radeon_freelist_t *head;
drm_radeon_freelist_t *tail;
int last_buf;
volatile u32 *scratch;
int writeback_works;
int usec_timeout;
@@ -338,6 +333,12 @@ extern int radeon_no_wb;
extern struct drm_ioctl_desc radeon_ioctls[];
extern int radeon_max_ioctl;
extern u32 radeon_get_ring_head(drm_radeon_private_t *dev_priv);
extern void radeon_set_ring_head(drm_radeon_private_t *dev_priv, u32 val);
#define GET_RING_HEAD(dev_priv) radeon_get_ring_head(dev_priv)
#define SET_RING_HEAD(dev_priv, val) radeon_set_ring_head(dev_priv, val)
/* Check whether the given hardware address is inside the framebuffer or the
* GART area.
*/
@@ -639,9 +640,9 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
#define RADEON_SCRATCHOFF( x ) (RADEON_SCRATCH_REG_OFFSET + 4*(x))
#define GET_SCRATCH( x ) (dev_priv->writeback_works \
? DRM_READ32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(x) ) \
: RADEON_READ( RADEON_SCRATCH_REG0 + 4*(x) ) )
extern u32 radeon_get_scratch(drm_radeon_private_t *dev_priv, int index);
#define GET_SCRATCH(dev_priv, x) radeon_get_scratch(dev_priv, x)
#define RADEON_GEN_INT_CNTL 0x0040
# define RADEON_CRTC_VBLANK_MASK (1 << 0)