drm/radeon: add vm set_page() callback for SI
Use the new WRITE_DATA packet rather than the legacy
ME_WRITE packet.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3319a9a..c76825f 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2789,6 +2789,47 @@
{
}
+/**
+ * si_vm_set_page - update the page tables using the CP
+ *
+ * @rdev: radeon_device pointer
+ * @pe: addr of the page entry
+ * @addr: dst addr to write into pe
+ * @count: number of page entries to update
+ * @incr: increase next addr by incr bytes
+ * @flags: access flags
+ *
+ * Update the page tables using the CP (cayman-si).
+ */
+void si_vm_set_page(struct radeon_device *rdev, uint64_t pe,
+ uint64_t addr, unsigned count,
+ uint32_t incr, uint32_t flags)
+{
+ struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index];
+ uint32_t r600_flags = cayman_vm_page_flags(rdev, flags);
+ int i;
+ uint64_t value;
+
+ radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 2 + count * 2));
+ radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
+ WRITE_DATA_DST_SEL(1)));
+ radeon_ring_write(ring, pe);
+ radeon_ring_write(ring, upper_32_bits(pe));
+ for (i = 0; i < count; ++i) {
+ if (flags & RADEON_VM_PAGE_SYSTEM) {
+ value = radeon_vm_map_gart(rdev, addr);
+ value &= 0xFFFFFFFFFFFFF000ULL;
+ } else if (flags & RADEON_VM_PAGE_VALID)
+ value = addr;
+ else
+ value = 0;
+ addr += incr;
+ value |= r600_flags;
+ radeon_ring_write(ring, value);
+ radeon_ring_write(ring, upper_32_bits(value));
+ }
+}
+
void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm)
{
struct radeon_ring *ring = &rdev->ring[ridx];