[PATCH] radeon: fall back to 1D tiling only with broken kernels

[alexdeucher at gmail.com]

From: Alex Deucher <alexander.deucher at amd.com>

Certain cards report the the wrong bank setup which causes
surface init to fail in the ddx and leads to no accel.
If we hit an invalid tiling parameter, just set a default
value and disable 2D tiling.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=43448

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 radeon/radeon_surface.c |   28 +++++++++++++++++++++-------
 1 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/radeon/radeon_surface.c b/radeon/radeon_surface.c
index a7b488b..adf209d 100644
--- a/radeon/radeon_surface.c
+++ b/radeon/radeon_surface.c
@@ -206,7 +206,9 @@ static int r6_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.num_pipes = 8;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.num_pipes = 8;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
 
     switch ((tiling_config & 0x30) >> 4) {
@@ -217,7 +219,9 @@ static int r6_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.num_banks = 8;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.num_banks = 8;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
 
     switch ((tiling_config & 0xc0) >> 6) {
@@ -228,7 +232,9 @@ static int r6_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.group_bytes = 512;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.group_bytes = 256;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
     return 0;
 }
@@ -458,7 +464,9 @@ static int eg_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.num_pipes = 8;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.num_pipes = 8;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
 
     switch ((tiling_config & 0xf0) >> 4) {
@@ -472,7 +480,9 @@ static int eg_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.num_banks = 16;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.num_banks = 8;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
 
     switch ((tiling_config & 0xf00) >> 8) {
@@ -483,7 +493,9 @@ static int eg_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.group_bytes = 512;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.group_bytes = 256;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
 
     switch ((tiling_config & 0xf000) >> 12) {
@@ -497,7 +509,9 @@ static int eg_init_hw_info(struct radeon_surface_manager *surf_man)
         surf_man->hw_info.row_size = 4096;
         break;
     default:
-        return -EINVAL;
+        surf_man->hw_info.row_size = 4096;
+        surf_man->hw_info.allow_2d = 0;
+        break;
     }
     return 0;
 }
-- 
1.7.7.5