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drm/nouveau/imem/nv50: map bar2 write-combined

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-11-01 03:56:19 +10:00
parent be55287aa5
commit dfcbd55068
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c
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@ -142,8 +142,8 @@ nv50_instobj_kmap(struct nv50_instobj *iobj, struct nvkm_vmm *vmm)
/* Make the mapping visible to the host. */
iobj->bar = bar;
iobj->map = ioremap(device->func->resource_addr(device, 3) +
(u32)iobj->bar.offset, size);
iobj->map = ioremap_wc(device->func->resource_addr(device, 3) +
(u32)iobj->bar.offset, size);
if (!iobj->map) {
nvkm_warn(subdev, "PRAMIN ioremap failed\n");
nvkm_vm_put(&iobj->bar);
@ -164,6 +164,7 @@ nv50_instobj_release(struct nvkm_memory *memory)
struct nv50_instmem *imem = iobj->imem;
struct nvkm_subdev *subdev = &imem->base.subdev;
wmb();
nvkm_bar_flush(subdev->device->bar);
if (refcount_dec_and_mutex_lock(&iobj->maps, &subdev->mutex)) {