drm/i915: Update the location of the ringbuffers' HWS_PGA registers for IVB.
They have been moved from the ringbuffer groups to their own group it
looks like. Fixes GPU hangs on gnome startup.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 12c168f..3971b5e 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -551,10 +551,31 @@
void intel_ring_setup_status_page(struct intel_ring_buffer *ring)
{
+ struct drm_device *dev = ring->dev;
drm_i915_private_t *dev_priv = ring->dev->dev_private;
- u32 mmio = (IS_GEN6(ring->dev) || IS_GEN7(ring->dev)) ?
- RING_HWS_PGA_GEN6(ring->mmio_base) :
- RING_HWS_PGA(ring->mmio_base);
+ u32 mmio = 0;
+
+ /* The ring status page addresses are no longer next to the rest of
+ * the ring registers as of gen7.
+ */
+ if (IS_GEN7(dev)) {
+ switch (ring->id) {
+ case RING_RENDER:
+ mmio = RENDER_HWS_PGA_GEN7;
+ break;
+ case RING_BLT:
+ mmio = BLT_HWS_PGA_GEN7;
+ break;
+ case RING_BSD:
+ mmio = BSD_HWS_PGA_GEN7;
+ break;
+ }
+ } else if (IS_GEN6(ring->dev)) {
+ mmio = RING_HWS_PGA_GEN6(ring->mmio_base);
+ } else {
+ mmio = RING_HWS_PGA(ring->mmio_base);
+ }
+
I915_WRITE(mmio, (u32)ring->status_page.gfx_addr);
POSTING_READ(mmio);
}