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path: root/drivers/gpu/drm/nouveau/nouveau_vm.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_vm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_vm.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c
index 2bf6c0350b4b..11edd5e91a0a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vm.c
@@ -77,6 +77,63 @@ nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
}
void
+nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
+ struct nouveau_mem *mem)
+{
+ struct nouveau_vm *vm = vma->vm;
+ int big = vma->node->type != vm->spg_shift;
+ u32 offset = vma->node->offset + (delta >> 12);
+ u32 bits = vma->node->type - 12;
+ u32 num = length >> vma->node->type;
+ u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
+ u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
+ u32 max = 1 << (vm->pgt_bits - bits);
+ unsigned m, sglen;
+ u32 end, len;
+ int i;
+ struct scatterlist *sg;
+
+ for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) {
+ struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
+ sglen = sg_dma_len(sg) >> PAGE_SHIFT;
+
+ end = pte + sglen;
+ if (unlikely(end >= max))
+ end = max;
+ len = end - pte;
+
+ for (m = 0; m < len; m++) {
+ dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
+
+ vm->map_sg(vma, pgt, mem, pte, 1, &addr);
+ num--;
+ pte++;
+
+ if (num == 0)
+ goto finish;
+ }
+ if (unlikely(end >= max)) {
+ pde++;
+ pte = 0;
+ }
+ if (m < sglen) {
+ for (; m < sglen; m++) {
+ dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
+
+ vm->map_sg(vma, pgt, mem, pte, 1, &addr);
+ num--;
+ pte++;
+ if (num == 0)
+ goto finish;
+ }
+ }
+
+ }
+finish:
+ vm->flush(vm);
+}
+
+void
nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
struct nouveau_mem *mem)
{