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This commit is contained in:
Keith Whitwell 2002-05-03 20:51:04 +00:00
parent 40a08a7e6d
commit 234bd22bcf
1 changed files with 14 additions and 12 deletions
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26
linux/radeon_cp.c
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@ -1220,28 +1220,30 @@ drm_buf_t *radeon_freelist_get( drm_device_t *dev )
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_buf_priv_t *buf_priv;
drm_buf_t *buf;
int i;
int i, t;
int start;
u32 done_age = RADEON_READ( RADEON_LAST_DISPATCH_REG );
if ( ++dev_priv->last_buf >= dma->buf_count )
dev_priv->last_buf = 0;
start = dev_priv->last_buf;
for ( i = start ; i < dma->buf_count ; i++ ) {
buf = dma->buflist[i];
buf_priv = buf->dev_private;
if ( buf->pid == 0 || (buf->pending &&
buf_priv->age <= done_age) ) {
buf->pending = 0;
return buf;
for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
u32 done_age = RADEON_READ( RADEON_LAST_DISPATCH_REG );
for ( i = start ; i < dma->buf_count ; i++ ) {
buf = dma->buflist[i];
buf_priv = buf->dev_private;
if ( buf->pid == 0 || (buf->pending &&
buf_priv->age <= done_age) ) {
buf->pending = 0;
return buf;
}
start = 0;
}
start = 0;
udelay( 1 );
}
/* It's not really an error for this to fail.
*/
DRM_ERROR( "returning NULL!\n" );
return NULL;
}