Signed-off-by: Marek Olšák <mar...@gmail.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
Reviewed-by: Michel Dänzer <michel.daen...@amd.com>
Cc: sta...@vger.kernel.org [3.5]
---
 drivers/gpu/drm/radeon/evergreen_cs.c |    6 ++++--
 drivers/gpu/drm/radeon/evergreend.h   |    2 ++
 drivers/gpu/drm/radeon/r600_cs.c      |    6 ++++--
 drivers/gpu/drm/radeon/radeon_drv.c   |    3 ++-
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c 
b/drivers/gpu/drm/radeon/evergreen_cs.c
index c1655412..f2e5c54 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -961,13 +961,15 @@ static int evergreen_cs_track_check(struct 
radeon_cs_parser *p)
 
        if (track->db_dirty) {
                /* Check stencil buffer */
-               if (G_028800_STENCIL_ENABLE(track->db_depth_control)) {
+               if (G_028044_FORMAT(track->db_s_info) != 
V_028044_STENCIL_INVALID &&
+                   G_028800_STENCIL_ENABLE(track->db_depth_control)) {
                        r = evergreen_cs_track_validate_stencil(p);
                        if (r)
                                return r;
                }
                /* Check depth buffer */
-               if (G_028800_Z_ENABLE(track->db_depth_control)) {
+               if (G_028040_FORMAT(track->db_z_info) != V_028040_Z_INVALID &&
+                   G_028800_Z_ENABLE(track->db_depth_control)) {
                        r = evergreen_cs_track_validate_depth(p);
                        if (r)
                                return r;
diff --git a/drivers/gpu/drm/radeon/evergreend.h 
b/drivers/gpu/drm/radeon/evergreend.h
index b50b15c..4a43b46 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -1273,6 +1273,8 @@
 #define   S_028044_FORMAT(x)                           (((x) & 0x1) << 0)
 #define   G_028044_FORMAT(x)                           (((x) >> 0) & 0x1)
 #define   C_028044_FORMAT                              0xFFFFFFFE
+#define            V_028044_STENCIL_INVALID                    0
+#define            V_028044_STENCIL_8                          1
 #define   G_028044_TILE_SPLIT(x)                       (((x) >> 8) & 0x7)
 #define DB_Z_READ_BASE                                 0x28048
 #define DB_STENCIL_READ_BASE                           0x2804c
diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index ca87f7a..1119e31 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -764,8 +764,10 @@ static int r600_cs_track_check(struct radeon_cs_parser *p)
        }
 
        /* Check depth buffer */
-       if (track->db_dirty && 
(G_028800_STENCIL_ENABLE(track->db_depth_control) ||
-               G_028800_Z_ENABLE(track->db_depth_control))) {
+       if (track->db_dirty &&
+           G_028010_FORMAT(track->db_depth_info) != V_028010_DEPTH_INVALID &&
+           (G_028800_STENCIL_ENABLE(track->db_depth_control) ||
+            G_028800_Z_ENABLE(track->db_depth_control))) {
                r = r600_cs_track_validate_db(p);
                if (r)
                        return r;
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c 
b/drivers/gpu/drm/radeon/radeon_drv.c
index 2c4d53f..ed13538 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -59,9 +59,10 @@
  *   2.15.0 - add max_pipes query
  *   2.16.0 - fix evergreen 2D tiled surface calculation
  *   2.17.0 - add STRMOUT_BASE_UPDATE for r7xx
+ *   2.18.0 - r600-eg: allow "invalid" DB formats
  */
 #define KMS_DRIVER_MAJOR       2
-#define KMS_DRIVER_MINOR       17
+#define KMS_DRIVER_MINOR       18
 #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);
-- 
1.7.9.5

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