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drm/radeon: add new getparam for number of backends. 

This allows userspace to work out how many DBs there are
for conditional rendering to work.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2011-03-01 14:32:27 +10:00
parent 91132d6bb6
commit 486af1896f
3 changed files with 13 additions and 1 deletions
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2
drivers/gpu/drm/radeon/radeon_drv.c
View File

@ -49,7 +49,7 @@
* - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
* 2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
* 2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
* 2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg
* 2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
*/
#define KMS_DRIVER_MAJOR 2
#define KMS_DRIVER_MINOR 9

11
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -205,6 +205,17 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
/* return clock value in KHz */
value = rdev->clock.spll.reference_freq * 10;
break;
case RADEON_INFO_NUM_BACKENDS:
if (rdev->family >= CHIP_CEDAR)
value = rdev->config.evergreen.max_backends;
else if (rdev->family >= CHIP_RV770)
value = rdev->config.rv770.max_backends;
else if (rdev->family >= CHIP_R600)
value = rdev->config.r600.max_backends;
else {
return -EINVAL;
}
break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;

1
include/drm/radeon_drm.h
View File

@ -908,6 +908,7 @@ struct drm_radeon_cs {
#define RADEON_INFO_WANT_HYPERZ 0x07
#define RADEON_INFO_WANT_CMASK 0x08 /* get access to CMASK on r300 */
#define RADEON_INFO_CLOCK_CRYSTAL_FREQ 0x09 /* clock crystal frequency */
#define RADEON_INFO_NUM_BACKENDS 0x0a /* DB/backends for r600+ - need for OQ */
struct drm_radeon_info {
uint32_t request;