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.
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@ -40,6 +40,9 @@
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#include "svga_debug.h"
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#define MAX_DMA_SIZE (8 * 1024 * 1024)
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/**
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* Allocate a winsys_buffer (ie. DMA, aka GMR memory).
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*
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@ -57,6 +60,13 @@ svga_winsys_buffer_create( struct svga_context *svga,
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struct svga_winsys_screen *sws = svgascreen->sws;
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struct svga_winsys_buffer *buf;
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/* XXX this shouldn't be a hard-coded number; it should be queried
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* somehow.
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*/
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if (size > MAX_DMA_SIZE) {
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return NULL;
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}
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/* Just try */
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buf = sws->buffer_create(sws, alignment, usage, size);
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if(!buf) {
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