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radeon: setup the ring buffer fetcher to be less agressive. 

Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Roland Scheidegger 2008-02-07 14:59:24 +10:00 committed by Dave Airlie
parent 9d5b3ffc42
commit 576cc458a6
2 changed files with 62 additions and 3 deletions
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15
drivers/char/drm/radeon_cp.c
View File

@ -1190,9 +1190,15 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
/* Set ring buffer size */
#ifdef __BIG_ENDIAN
RADEON_WRITE(RADEON_CP_RB_CNTL,
dev_priv->ring.size_l2qw | RADEON_BUF_SWAP_32BIT);
RADEON_BUF_SWAP_32BIT |
(dev_priv->ring.fetch_size_l2ow << 18) |
(dev_priv->ring.rptr_update_l2qw << 8) |
dev_priv->ring.size_l2qw);
#else
RADEON_WRITE(RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw);
RADEON_WRITE(RADEON_CP_RB_CNTL,
(dev_priv->ring.fetch_size_l2ow << 18) |
(dev_priv->ring.rptr_update_l2qw << 8) |
dev_priv->ring.size_l2qw);
#endif
/* Start with assuming that writeback doesn't work */
@ -1663,6 +1669,11 @@ static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init)
dev_priv->ring.size = init->ring_size;
dev_priv->ring.size_l2qw = drm_order(init->ring_size / 8);
dev_priv->ring.rptr_update = /* init->rptr_update */ 4096;
dev_priv->ring.rptr_update_l2qw = drm_order( /* init->rptr_update */ 4096 / 8);
dev_priv->ring.fetch_size = /* init->fetch_size */ 32;
dev_priv->ring.fetch_size_l2ow = drm_order( /* init->fetch_size */ 32 / 16);
dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1;
dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;

48
drivers/char/drm/radeon_drv.h
View File

@ -166,6 +166,12 @@ typedef struct drm_radeon_ring_buffer {
int size;
int size_l2qw;
int rptr_update; /* Double Words */
int rptr_update_l2qw; /* log2 Quad Words */
int fetch_size; /* Double Words */
int fetch_size_l2ow; /* log2 Oct Words */
u32 tail;
u32 tail_mask;
int space;
@ -615,8 +621,50 @@ extern int r300_do_cp_cmdbuf(struct drm_device * dev,
# define RADEON_SOFT_RESET_E2 (1 << 5)
# define RADEON_SOFT_RESET_RB (1 << 6)
# define RADEON_SOFT_RESET_HDP (1 << 7)
/*
* 6:0 Available slots in the FIFO
* 8 Host Interface active
* 9 CP request active
* 10 FIFO request active
* 11 Host Interface retry active
* 12 CP retry active
* 13 FIFO retry active
* 14 FIFO pipeline busy
* 15 Event engine busy
* 16 CP command stream busy
* 17 2D engine busy
* 18 2D portion of render backend busy
* 20 3D setup engine busy
* 26 GA engine busy
* 27 CBA 2D engine busy
* 31 2D engine busy or 3D engine busy or FIFO not empty or CP busy or
* command stream queue not empty or Ring Buffer not empty
*/
#define RADEON_RBBM_STATUS 0x0e40
/* Same as the previous RADEON_RBBM_STATUS; this is a mirror of that register. */
/* #define RADEON_RBBM_STATUS 0x1740 */
/* bits 6:0 are dword slots available in the cmd fifo */
# define RADEON_RBBM_FIFOCNT_MASK 0x007f
# define RADEON_HIRQ_ON_RBB (1 << 8)
# define RADEON_CPRQ_ON_RBB (1 << 9)
# define RADEON_CFRQ_ON_RBB (1 << 10)
# define RADEON_HIRQ_IN_RTBUF (1 << 11)
# define RADEON_CPRQ_IN_RTBUF (1 << 12)
# define RADEON_CFRQ_IN_RTBUF (1 << 13)
# define RADEON_PIPE_BUSY (1 << 14)
# define RADEON_ENG_EV_BUSY (1 << 15)
# define RADEON_CP_CMDSTRM_BUSY (1 << 16)
# define RADEON_E2_BUSY (1 << 17)
# define RADEON_RB2D_BUSY (1 << 18)
# define RADEON_RB3D_BUSY (1 << 19) /* not used on r300 */
# define RADEON_VAP_BUSY (1 << 20)
# define RADEON_RE_BUSY (1 << 21) /* not used on r300 */
# define RADEON_TAM_BUSY (1 << 22) /* not used on r300 */
# define RADEON_TDM_BUSY (1 << 23) /* not used on r300 */
# define RADEON_PB_BUSY (1 << 24) /* not used on r300 */
# define RADEON_TIM_BUSY (1 << 25) /* not used on r300 */
# define RADEON_GA_BUSY (1 << 26)
# define RADEON_CBA2D_BUSY (1 << 27)
# define RADEON_RBBM_ACTIVE (1 << 31)
#define RADEON_RE_LINE_PATTERN 0x1cd0
#define RADEON_RE_MISC 0x26c4