From: Joerg Roedel <jroe...@suse.de>
The map and unmap functions of the IOMMU-API changed their
semantics: They do no longer guarantee that the hardware
TLBs are synchronized with the page-table updates they made.
To make conversion easier, new synchronized functions have
been introduced which give these guarantees again until the
code is converted to use the new TLB-flush interface of the
IOMMU-API, which allows certain optimizations.
But for now, just convert this code to use the synchronized
functions so that it will behave as before.
Cc: Ben Skeggs <bske...@redhat.com>
Cc: David Airlie <airl...@linux.ie>
Cc: dri-de...@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Signed-off-by: Joerg Roedel <jroe...@suse.de>
---
drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
index cd5adbe..3f0de47 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c
@@ -322,8 +322,9 @@ gk20a_instobj_dtor_iommu(struct nvkm_memory *memory)
/* Unmap pages from GPU address space and free them */
for (i = 0; i < node->base.mem.size; i++) {
- iommu_unmap(imem->domain,
- (r->offset + i) << imem->iommu_pgshift, PAGE_SIZE);
+ iommu_unmap_sync(imem->domain,
+ (r->offset + i) << imem->iommu_pgshift,
+ PAGE_SIZE);
dma_unmap_page(dev, node->dma_addrs[i], PAGE_SIZE,
DMA_BIDIRECTIONAL);
__free_page(node->pages[i]);
@@ -458,14 +459,15 @@ gk20a_instobj_ctor_iommu(struct gk20a_instmem *imem, u32
npages, u32 align,
for (i = 0; i < npages; i++) {
u32 offset = (r->offset + i) << imem->iommu_pgshift;
- ret = iommu_map(imem->domain, offset, node->dma_addrs[i],
- PAGE_SIZE, IOMMU_READ | IOMMU_WRITE);
+ ret = iommu_map_sync(imem->domain, offset, node->dma_addrs[i],
+ PAGE_SIZE, IOMMU_READ | IOMMU_WRITE);
if (ret < 0) {
nvkm_error(subdev, "IOMMU mapping failure: %d\n", ret);
while (i-- > 0) {
offset -= PAGE_SIZE;
- iommu_unmap(imem->domain, offset, PAGE_SIZE);
+ iommu_unmap_sync(imem->domain, offset,
+ PAGE_SIZE);
}
goto release_area;
}
--
2.7.4
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