Module: Mesa
Branch: master
Commit: 31136eae3ae03615a244496d4f82be50e82d803c
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=31136eae3ae03615a244496d4f82be50e82d803c

Author: Michel Dänzer <[email protected]>
Date:   Tue Jan 31 15:33:19 2017 +0900

winsys/radeon: Allow visible VRAM size > 256MB with kernel driver >= 2.49

The kernel driver reports correct values now.

Reviewed-by: Christian König <[email protected]>
Reviewed-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>

---

 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 a8da62f..cacd683 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. */

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