[Mesa-dev] [PATCH] winsys/radeon: Allow visible VRAM size > 256MB with kernel driver >= 2.49

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

The kernel driver reports correct values now.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index a8da62fd36..cacd683879 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -372,7 +372,12 @@ static bool do_winsys_init(struct radeon_drm_winsys *ws)
     }
     ws->info.gart_size = gem_info.gart_size;
     ws->info.vram_size = gem_info.vram_size;
-    ws->info.vram_vis_size = MIN2(gem_info.vram_visible, 256*1024*1024);
+    ws->info.vram_vis_size = gem_info.vram_visible;
+    /* Older versions of the kernel driver reported incorrect values, and
+     * didn't support more than 256MB of visible VRAM anyway
+     */
+    if (ws->info.drm_minor < 49)
+        ws->info.vram_vis_size = MIN2(ws->info.vram_vis_size, 256*1024*1024);
 
     /* Radeon allocates all buffers as contigous, which makes large allocations
      * unlikely to succeed. */
-- 
2.11.0