Merge tag 'pm+acpi-for-3.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / gpu / drm / radeon / ni.c

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 8c74c72..81e6a56 100644 (file)
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1538,26 +1538,31 @@ void cayman_vm_set_page(struct radeon_device *rdev, uint64_t pe,
 {
        struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index];
        uint32_t r600_flags = cayman_vm_page_flags(rdev, flags);
-       int i;
 
-       radeon_ring_write(ring, PACKET3(PACKET3_ME_WRITE, 1 + count * 2));
-       radeon_ring_write(ring, pe);
-       radeon_ring_write(ring, upper_32_bits(pe) & 0xff);
-       for (i = 0; i < count; ++i) {
-               uint64_t value = 0;
-               if (flags & RADEON_VM_PAGE_SYSTEM) {
-                       value = radeon_vm_map_gart(rdev, addr);
-                       value &= 0xFFFFFFFFFFFFF000ULL;
-                       addr += incr;
-
-               } else if (flags & RADEON_VM_PAGE_VALID) {
-                       value = addr;
-                       addr += incr;
-               }
+       while (count) {
+               unsigned ndw = 1 + count * 2;
+               if (ndw > 0x3FFF)
+                       ndw = 0x3FFF;
+
+               radeon_ring_write(ring, PACKET3(PACKET3_ME_WRITE, ndw));
+               radeon_ring_write(ring, pe);
+               radeon_ring_write(ring, upper_32_bits(pe) & 0xff);
+               for (; ndw > 1; ndw -= 2, --count, pe += 8) {
+                       uint64_t value = 0;
+                       if (flags & RADEON_VM_PAGE_SYSTEM) {
+                               value = radeon_vm_map_gart(rdev, addr);
+                               value &= 0xFFFFFFFFFFFFF000ULL;
+                               addr += incr;
+
+                       } else if (flags & RADEON_VM_PAGE_VALID) {
+                               value = addr;
+                               addr += incr;
+                       }
 
-               value |= r600_flags;
-               radeon_ring_write(ring, value);
-               radeon_ring_write(ring, upper_32_bits(value));
+                       value |= r600_flags;
+                       radeon_ring_write(ring, value);
+                       radeon_ring_write(ring, upper_32_bits(value));
+               }
        }
 }
 
@@ -1586,4 +1591,8 @@ void cayman_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
        /* bits 0-7 are the VM contexts0-7 */
        radeon_ring_write(ring, PACKET0(VM_INVALIDATE_REQUEST, 0));
        radeon_ring_write(ring, 1 << vm->id);
+
+       /* sync PFP to ME, otherwise we might get invalid PFP reads */
+       radeon_ring_write(ring, PACKET3(PACKET3_PFP_SYNC_ME, 0));
+       radeon_ring_write(ring, 0x0);
 }