drm/radeon/kms: add info query for backend map

The 3D driver need to get the pipe to backend
map to certain things.  Add a query to get the
info.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 files changed, 22 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 660f96401a05..55d04ee88c24 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2047,6 +2047,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
         rdev->config.evergreen.tile_config |=
                 ((gb_addr_config & 0x30000000) >> 28) << 12;
 
+        rdev->config.evergreen.backend_map = gb_backend_map;
         WREG32(GB_BACKEND_MAP, gb_backend_map);
         WREG32(GB_ADDR_CONFIG, gb_addr_config);
         WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 559dbd412906..44c4750f4518 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -833,6 +833,7 @@ static void cayman_gpu_init(struct radeon_device *rdev)
         rdev->config.cayman.tile_config |=
                 ((gb_addr_config & ROW_SIZE_MASK) >> ROW_SIZE_SHIFT) << 12;
 
+        rdev->config.cayman.backend_map = gb_backend_map;
         WREG32(GB_BACKEND_MAP, gb_backend_map);
         WREG32(GB_ADDR_CONFIG, gb_addr_config);
         WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index bc54b26cb32f..9fefce704f96 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1662,6 +1662,7 @@ void r600_gpu_init(struct radeon_device *rdev)
                                                                                R6XX_MAX_BACKENDS_MASK) >> 16)),
                                                         (cc_rb_backend_disable >> 16));
         rdev->config.r600.tile_config = tiling_config;
+        rdev->config.r600.backend_map = backend_map;
         tiling_config |= BACKEND_MAP(backend_map);
         WREG32(GB_TILING_CONFIG, tiling_config);
         WREG32(DCP_TILING_CONFIG, tiling_config & 0xffff);
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ef0e0e016914..ec534f52408a 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1003,6 +1003,7 @@ struct r600_asic {
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
         unsigned                tile_config;
+        unsigned                backend_map;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -1028,6 +1029,7 @@ struct rv770_asic {
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
         unsigned                tile_config;
+        unsigned                backend_map;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -1054,6 +1056,7 @@ struct evergreen_asic {
         unsigned tiling_npipes;
         unsigned tiling_group_size;
         unsigned tile_config;
+        unsigned backend_map;
         struct r100_gpu_lockup  lockup;
 };
 
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index cbb4584a4a23..85f033f19a8a 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -51,9 +51,10 @@
  *   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, backend query
  *   2.10.0 - fusion 2D tiling, initial compute support for the CS checker
+ *   2.11.0 - backend map
  */
 #define KMS_DRIVER_MAJOR        2
-#define KMS_DRIVER_MINOR        10
+#define KMS_DRIVER_MINOR        11
 #define KMS_DRIVER_PATCHLEVEL   0
 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
 int radeon_driver_unload_kms(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 6f80a216bb39..be2c1224e68a 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -237,6 +237,19 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
         case RADEON_INFO_FUSION_GART_WORKING:
                 value = 1;
                 break;
+        case RADEON_INFO_BACKEND_MAP:
+                if (rdev->family >= CHIP_CAYMAN)
+                        value = rdev->config.cayman.backend_map;
+                else if (rdev->family >= CHIP_CEDAR)
+                        value = rdev->config.evergreen.backend_map;
+                else if (rdev->family >= CHIP_RV770)
+                        value = rdev->config.rv770.backend_map;
+                else if (rdev->family >= CHIP_R600)
+                        value = rdev->config.r600.backend_map;
+                else {
+                        return -EINVAL;
+                }
+                break;
         default:
                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
                 return -EINVAL;
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 4de51891aa6d..4720d000d440 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -778,6 +778,7 @@ static void rv770_gpu_init(struct radeon_device *rdev)
                                                                 (cc_rb_backend_disable >> 16));
 
         rdev->config.rv770.tile_config = gb_tiling_config;
+        rdev->config.rv770.backend_map = backend_map;
         gb_tiling_config |= BACKEND_MAP(backend_map);
 
         WREG32(GB_TILING_CONFIG, gb_tiling_config);