drm/radeon/kms: add support for multiple fence queues v2

For supporting multiple CP ring buffers, async DMA
engines and UVD.  We still need a way to synchronize
between engines.

v2 initialize unused fence driver ring to avoid issue in
   suspend/unload

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index b1053d6..1c9ab94 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -642,7 +642,7 @@
 	while (status || rdev->irq.stat_regs.r500.disp_int) {
 		/* SW interrupt */
 		if (G_000044_SW_INT(status)) {
-			radeon_fence_process(rdev);
+			radeon_fence_process(rdev, RADEON_RING_TYPE_GFX_INDEX);
 		}
 		/* GUI idle */
 		if (G_000040_GUI_IDLE(status)) {
@@ -962,7 +962,7 @@
 	rs600_mc_init(rdev);
 	rs600_debugfs(rdev);
 	/* Fence driver */
-	r = radeon_fence_driver_init(rdev);
+	r = radeon_fence_driver_init(rdev, 1);
 	if (r)
 		return r;
 	r = radeon_irq_kms_init(rdev);