virtio-gpu: add iommu support
Switch from cpu_physical_memory_map to dma_memory_map, so iommu mappings for virtio-gpu objects work properly. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-Id: <20180829122101.29852-3-kraxel@redhat.com>
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@ -17,6 +17,7 @@
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#include "qemu/iov.h"
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#include "ui/console.h"
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#include "trace.h"
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#include "sysemu/dma.h"
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/virtio-gpu.h"
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#include "hw/virtio/virtio-bus.h"
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@ -726,7 +727,8 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
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uint32_t l = le32_to_cpu(ents[i].length);
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hwaddr len = l;
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(*iov)[i].iov_len = l;
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(*iov)[i].iov_base = cpu_physical_memory_map(a, &len, 1);
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(*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
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a, &len, DMA_DIRECTION_TO_DEVICE);
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if (addr) {
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(*addr)[i] = a;
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}
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@ -754,7 +756,9 @@ void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g,
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int i;
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for (i = 0; i < count; i++) {
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cpu_physical_memory_unmap(iov[i].iov_base, iov[i].iov_len, 1,
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dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
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iov[i].iov_base, iov[i].iov_len,
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DMA_DIRECTION_TO_DEVICE,
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iov[i].iov_len);
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}
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g_free(iov);
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@ -1147,13 +1151,17 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
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for (i = 0; i < res->iov_cnt; i++) {
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hwaddr len = res->iov[i].iov_len;
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res->iov[i].iov_base =
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cpu_physical_memory_map(res->addrs[i], &len, 1);
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dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
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res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE);
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if (!res->iov[i].iov_base || len != res->iov[i].iov_len) {
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/* Clean up the half-a-mapping we just created... */
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if (res->iov[i].iov_base) {
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cpu_physical_memory_unmap(res->iov[i].iov_base,
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len, 0, 0);
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dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
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res->iov[i].iov_base,
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res->iov[i].iov_len,
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DMA_DIRECTION_TO_DEVICE,
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res->iov[i].iov_len);
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}
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/* ...and the mappings for previous loop iterations */
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res->iov_cnt = i;
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@ -1205,11 +1213,6 @@ static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
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Error *local_err = NULL;
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int i;
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if (virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM)) {
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error_setg(errp, "virtio-gpu does not support vIOMMU yet");
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return;
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}
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if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) {
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error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS);
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return;
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