+ return PIPE_OK;
+}
+
+
+/**
+ * Upload the buffer to the host in a piecewise fashion.
+ *
+ * Used when the buffer is too big to fit in the GMR aperture.
+ */
+static INLINE enum pipe_error
+svga_buffer_upload_piecewise(struct svga_screen *ss,
+ struct svga_context *svga,
+ struct svga_buffer *sbuf)
+{
+ struct svga_winsys_screen *sws = ss->sws;
+ const unsigned alignment = sizeof(void *);
+ const unsigned usage = 0;
+ unsigned i;
+
+ assert(sbuf->map.num_ranges);
+ assert(!sbuf->dma.pending);
+
+ SVGA_DBG(DEBUG_DMA, "dma to sid %p\n", sbuf->handle);
+
+ for (i = 0; i < sbuf->map.num_ranges; ++i) {
+ struct svga_buffer_range *range = &sbuf->map.ranges[i];
+ unsigned offset = range->start;
+ unsigned size = range->end - range->start;
+
+ while (offset < range->end) {
+ struct svga_winsys_buffer *hwbuf;
+ uint8_t *map;
+ enum pipe_error ret;
+
+ if (offset + size > range->end)
+ size = range->end - offset;
+
+ hwbuf = svga_winsys_buffer_create(ss, alignment, usage, size);
+ while (!hwbuf) {
+ size /= 2;
+ if (!size)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+ hwbuf = svga_winsys_buffer_create(ss, alignment, usage, size);
+ }
+
+ SVGA_DBG(DEBUG_DMA, " bytes %u - %u\n",
+ offset, offset + size);
+
+ map = sws->buffer_map(sws, hwbuf,
+ PIPE_BUFFER_USAGE_CPU_WRITE |
+ PIPE_BUFFER_USAGE_DISCARD);
+ assert(map);
+ if (map) {
+ memcpy(map, sbuf->swbuf, size);
+ sws->buffer_unmap(sws, hwbuf);
+ }
+
+ ret = SVGA3D_BufferDMA(svga->swc,
+ hwbuf, sbuf->handle,
+ SVGA3D_WRITE_HOST_VRAM,
+ size, 0, offset, sbuf->dma.flags);
+ if(ret != PIPE_OK) {
+ svga_context_flush(svga, NULL);
+ ret = SVGA3D_BufferDMA(svga->swc,
+ hwbuf, sbuf->handle,
+ SVGA3D_WRITE_HOST_VRAM,
+ size, 0, offset, sbuf->dma.flags);
+ assert(ret == PIPE_OK);
+ }
+
+ sbuf->dma.flags.discard = FALSE;
+
+ sws->buffer_destroy(sws, hwbuf);
+
+ offset += size;
+ }
+ }
+
+ sbuf->map.num_ranges = 0;
+