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Commit 2e1a7674 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: add new INFO ioctl requests 



Add requests to get the number of shader engines (SE) and
the number of SH per SE.  These are needed for geometry
and tesselation shaders in the 3D driver as well as setting
up PA_SC_RASTER_CONFIG on SI asics.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a02dc74b

drivers/gpu/drm/radeon/radeon_kms.c

+16 −0
Original line number Diff line number Diff line
@@ -361,6 +361,22 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 
			return -EINVAL;

		}

		break;

	case RADEON_INFO_MAX_SE:

		if (rdev->family >= CHIP_TAHITI)

			value = rdev->config.si.max_shader_engines;

		else if (rdev->family >= CHIP_CAYMAN)

			value = rdev->config.cayman.max_shader_engines;

		else if (rdev->family >= CHIP_CEDAR)

			value = rdev->config.evergreen.num_ses;

		else

			value = 1;

		break;

	case RADEON_INFO_MAX_SH_PER_SE:

		if (rdev->family >= CHIP_TAHITI)

			value = rdev->config.si.max_sh_per_se;

		else

			return -EINVAL;

		break;

	default:

		DRM_DEBUG_KMS("Invalid request %d\n", info->request);

		return -EINVAL;

include/uapi/drm/radeon_drm.h

+4 −0
Original line number Diff line number Diff line
@@ -967,6 +967,10 @@ struct drm_radeon_cs { 
#define RADEON_INFO_MAX_PIPES		0x10

/* timestamp for GL_ARB_timer_query (OpenGL), returns the current GPU clock */

#define RADEON_INFO_TIMESTAMP		0x11

/* max shader engines (SE) - needed for geometry shaders, etc. */

#define RADEON_INFO_MAX_SE		0x12

/* max SH per SE */

#define RADEON_INFO_MAX_SH_PER_SE	0x13



struct drm_radeon_info {

	uint32_t		request;