提交 0fd2c201 编写于 作者: D Daniel Vetter

drm/i915: don't enable the gen6 bsd ring tail write enable on gen7

HW engineers have fixed this issue for ivb. Again, a nice cleanup
possible thanks to the more flexible ring initialization.
Reviewed-by: NEric Anholt <eric@anholt.net>
Signed-Off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
上级 e48d8634
......@@ -1415,9 +1415,12 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
ring->name = "bsd ring";
ring->id = VCS;
ring->write_tail = ring_write_tail;
if (IS_GEN6(dev) || IS_GEN7(dev)) {
ring->mmio_base = GEN6_BSD_RING_BASE;
ring->write_tail = gen6_bsd_ring_write_tail;
/* gen6 bsd needs a special wa for tail updates */
if (IS_GEN6(dev))
ring->write_tail = gen6_bsd_ring_write_tail;
ring->flush = gen6_ring_flush;
ring->add_request = gen6_add_request;
ring->get_seqno = gen6_ring_get_seqno;
......@@ -1433,7 +1436,6 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
ring->signal_mbox[1] = GEN6_BVSYNC;
} else {
ring->mmio_base = BSD_RING_BASE;
ring->write_tail = ring_write_tail;
ring->flush = bsd_ring_flush;
ring->add_request = ring_add_request;
ring->get_seqno = ring_get_seqno;
......
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