drm/nouveau/imem/nv40: map bar2 write-combined

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv40.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv40.c
index 5ae9dd2..01453fd 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv40.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv40.c
@@ -67,6 +67,7 @@ nv40_instobj_ptrs = {
 static void
 nv40_instobj_release(struct nvkm_memory *memory)
 {
+       wmb();
 }
 
 static void __iomem *
@@ -253,8 +254,8 @@ nv40_instmem_new(struct nvkm_device *device, int index,
        else
                bar = 3;
 
-       imem->iomem = ioremap(device->func->resource_addr(device, bar),
-                             device->func->resource_size(device, bar));
+       imem->iomem = ioremap_wc(device->func->resource_addr(device, bar),
+                                device->func->resource_size(device, bar));
        if (!imem->iomem) {
                nvkm_error(&imem->base.subdev, "unable to map PRAMIN BAR\n");
                return -EFAULT;