drm/nv50: support for compression

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

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_vm.c b/drivers/gpu/drm/nouveau/nv50_vm.c
index 37f941bf4a0..b23794c8859 100644
--- a/drivers/gpu/drm/nouveau/nv50_vm.c
+++ b/drivers/gpu/drm/nouveau/nv50_vm.c
@@ -83,8 +83,9 @@ nv50_vm_addr(struct nouveau_vma *vma, u64 phys, u32 memtype, u32 target)
 
 void
 nv50_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
-	    struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys)
+	    struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta)
 {
+	u32 comp = (mem->memtype & 0x180) >> 7;
 	u32 block;
 	int i;
 
@@ -105,6 +106,11 @@ nv50_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
 
 		phys += block << (vma->node->type - 3);
 		cnt  -= block;
+		if (comp) {
+			u32 tag = mem->tag->start + ((delta >> 16) * comp);
+			offset_h |= (tag << 17);
+			delta    += block << (vma->node->type - 3);
+		}
 
 		while (block) {
 			nv_wo32(pgt, pte + 0, offset_l);