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Commit 486af189 authored by Dave Airlie's avatar Dave Airlie
Browse files

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: default avatarDave Airlie <airlied@redhat.com>
parent 91132d6b

drivers/gpu/drm/radeon/radeon_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/radeon/radeon_kms.c

+11 −0
Original line number Diff line number Diff line
@@ -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;

include/drm/radeon_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -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;