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Add support to turn writeback off via radeon module option

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This commit is contained in:
Dave Airlie 2005-09-30 06:41:10 +00:00
parent 6ff57e2d7c
commit f42cdc8dcb
4 changed files with 11 additions and 0 deletions
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2
bsd-core/radeon_drv.c
View file

@ -35,6 +35,8 @@
#include "radeon_drv.h"
#include "drm_pciids.h"
int radeon_no_wb;
/* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
static drm_pci_id_list_t radeon_pciidlist[] = {
radeon_PCI_IDS

4
linux-core/radeon_drv.c
View file

@ -37,6 +37,10 @@
#include "drm_pciids.h"
int radeon_no_wb;
MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers\n");
module_param_named(no_wb, radeon_no_wb, int, 0444);
static int dri_library_name(struct drm_device * dev, char * buf)
{

4
shared-core/radeon_cp.c
View file

@ -1206,6 +1206,10 @@ static void radeon_cp_init_ring_buffer(drm_device_t * dev,
dev_priv->writeback_works = 0;
DRM_DEBUG("writeback test failed\n");
}
if (radeon_no_wb == 1) {
dev_priv->writeback_works = 0;
DRM_DEBUG("writeback forced off\n");
}
dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0;
RADEON_WRITE(RADEON_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame);

1
shared-core/radeon_drv.h
View file

@ -275,6 +275,7 @@ typedef struct drm_radeon_buf_priv {
u32 age;
} drm_radeon_buf_priv_t;
extern int radeon_no_wb;
/* radeon_cp.c */
extern int radeon_cp_init(DRM_IOCTL_ARGS);
extern int radeon_cp_start(DRM_IOCTL_ARGS);