drm/radeon/kms/r6xx+: add query for tile config (v2)

Userspace needs this information to access tiled
buffers via the CPU.

v2: rebased on evergreen accel changes

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

6 files changed, 21 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 1b7da39cc587..957d5067ad9c 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1132,6 +1132,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                                                                  rdev->config.evergreen.max_backends) &
                                                                 EVERGREEN_MAX_BACKENDS_MASK));
 
+        rdev->config.evergreen.tile_config = gb_addr_config;
         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 15fe6c214034..aa36ef69ba61 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1623,7 +1623,7 @@ void r600_gpu_init(struct radeon_device *rdev)
                                                          r600_count_pipe_bits((cc_rb_backend_disable &
                                                                                R6XX_MAX_BACKENDS_MASK) >> 16)),
                                                         (cc_rb_backend_disable >> 16));
-
+        rdev->config.r600.tile_config = tiling_config;
         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 d4d776d2f1e0..be8420e65f01 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -914,6 +914,7 @@ struct r600_asic {
         unsigned                tiling_nbanks;
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
+        unsigned                tile_config;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -938,6 +939,7 @@ struct rv770_asic {
         unsigned                tiling_nbanks;
         unsigned                tiling_npipes;
         unsigned                tiling_group_size;
+        unsigned                tile_config;
         struct r100_gpu_lockup  lockup;
 };
 
@@ -963,6 +965,7 @@ struct evergreen_asic {
         unsigned tiling_nbanks;
         unsigned tiling_npipes;
         unsigned tiling_group_size;
+        unsigned tile_config;
 };
 
 union radeon_asic_config {
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index ed0ceb3fc40a..6f8a2e572878 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -46,9 +46,10 @@
  * - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
  * - 2.4.0 - add crtc id query
  * - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
+ * - 2.6.0 - add tiling config query (r6xx+)
  */
 #define KMS_DRIVER_MAJOR        2
-#define KMS_DRIVER_MINOR        5
+#define KMS_DRIVER_MINOR        6
 #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 70fda6361cd0..9012e6fbadb6 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -147,6 +147,18 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
         case RADEON_INFO_ACCEL_WORKING2:
                 value = rdev->accel_working;
                 break;
+        case RADEON_INFO_TILING_CONFIG:
+                if (rdev->family >= CHIP_CEDAR)
+                        value = rdev->config.evergreen.tile_config;
+                else if (rdev->family >= CHIP_RV770)
+                        value = rdev->config.rv770.tile_config;
+                else if (rdev->family >= CHIP_R600)
+                        value = rdev->config.r600.tile_config;
+                else {
+                        DRM_DEBUG("tiling config is r6xx+ only!\n");
+                        return -EINVAL;
+                }
+                break;
         default:
                 DRM_DEBUG("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 836c15ab84d1..236fe6681922 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -674,8 +674,9 @@ static void rv770_gpu_init(struct radeon_device *rdev)
                                                                  r600_count_pipe_bits((cc_rb_backend_disable &
                                                                                        R7XX_MAX_BACKENDS_MASK) >> 16)),
                                                                 (cc_rb_backend_disable >> 16));
-        gb_tiling_config |= BACKEND_MAP(backend_map);
 
+        rdev->config.rv770.tile_config = gb_tiling_config;
+        gb_tiling_config |= BACKEND_MAP(backend_map);
 
         WREG32(GB_TILING_CONFIG, gb_tiling_config);
         WREG32(DCP_TILING_CONFIG, (gb_tiling_config & 0xffff));