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authorBrian Paul <brianp@vmware.com>2011-02-11 11:56:44 -0700
committerBrian Paul <brianp@vmware.com>2011-02-11 11:56:45 -0700
commitda2e541218d65c8931f0061fc4badd8fdedfcb83 (patch)
tree9d2373c24f49d06dba281534bc17ca571e76feaa /src/gallium/drivers/svga
parent8c617990519a113886fe743b5932525b0cb37544 (diff)
svga: add max DMA size check in svga_winsys_buffer_create()
This fixes a problem when trying to use large (2K x 2K) texture images. We'll DMA the image in chunks. Patch written by Jose.
Diffstat (limited to 'src/gallium/drivers/svga')
-rw-r--r--src/gallium/drivers/svga/svga_resource_buffer_upload.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_resource_buffer_upload.c b/src/gallium/drivers/svga/svga_resource_buffer_upload.c
index 765d2f3408..fdc0329f6c 100644
--- a/src/gallium/drivers/svga/svga_resource_buffer_upload.c
+++ b/src/gallium/drivers/svga/svga_resource_buffer_upload.c
@@ -40,6 +40,9 @@
#include "svga_debug.h"
+#define MAX_DMA_SIZE (8 * 1024 * 1024)
+
+
/**
* Allocate a winsys_buffer (ie. DMA, aka GMR memory).
*
@@ -57,6 +60,13 @@ svga_winsys_buffer_create( struct svga_context *svga,
struct svga_winsys_screen *sws = svgascreen->sws;
struct svga_winsys_buffer *buf;
+ /* XXX this shouldn't be a hard-coded number; it should be queried
+ * somehow.
+ */
+ if (size > MAX_DMA_SIZE) {
+ return NULL;
+ }
+
/* Just try */
buf = sws->buffer_create(sws, alignment, usage, size);
if(!buf) {