[PATCH 1/3] drm/radeon: add VM GART copy optimization to NI as well

[Christian König]

From: Christian K?nig <christian.koe...@amd.com>

Signed-off-by: Christian K?nig <christian.koenig at amd.com>
---
 drivers/gpu/drm/radeon/ni_dma.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/ni_dma.c b/drivers/gpu/drm/radeon/ni_dma.c
index 6378e02..66325ef 100644
--- a/drivers/gpu/drm/radeon/ni_dma.c
+++ b/drivers/gpu/drm/radeon/ni_dma.c
@@ -330,7 +330,26 @@ void cayman_dma_vm_set_page(struct radeon_device *rdev,

        trace_radeon_vm_set_page(pe, addr, count, incr, flags);

-       if ((flags & R600_PTE_SYSTEM) || (count == 1)) {
+       if ((flags & R600_PTE_GART_MASK) == R600_PTE_GART_MASK) {
+               uint64_t src = rdev->gart.table_addr + (addr >> 12) * 8;
+               while (count) {
+                       ndw = count * 2;
+                       if (ndw > 0xFFFFE)
+                               ndw = 0xFFFFE;
+
+                       ib->ptr[ib->length_dw++] = DMA_PACKET(DMA_PACKET_COPY,
+                                                             0, 0, ndw);
+                       ib->ptr[ib->length_dw++] = lower_32_bits(pe);
+                       ib->ptr[ib->length_dw++] = lower_32_bits(src);
+                       ib->ptr[ib->length_dw++] = upper_32_bits(pe) & 0xff;
+                       ib->ptr[ib->length_dw++] = upper_32_bits(src) & 0xff;
+
+                       pe += ndw * 4;
+                       src += ndw * 4;
+                       count -= ndw / 2;
+               }
+
+       } else if ((flags & R600_PTE_SYSTEM) || (count == 1)) {
                while (count) {
                        ndw = count * 2;
                        if (ndw > 0xFFFFE)
-- 
1.9.1