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drm/i915: Fix PIPE_CONTROL command on Sandybridge 

Sandybridge(Gen6) has new format for PIPE_CONTROL command,
the flush and post-op control are in dword 1 now. This
changes command length field for difference between Ironlake
and Sandybridge.

I tried to test this with noop request and issue PIPE_CONTROL
command for each sequence and track notify interrupts, which
seems work fine. Hopefully we don't need workaround like on
Ironlake for Sandybridge.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhenyu Wang 2010-05-27 10:26:42 +08:00 committed by Eric Anholt
parent ab34c22681
commit ca76482e0f
1 changed files with 14 additions and 2 deletions
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16
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -213,7 +213,7 @@ static int init_render_ring(struct drm_device *dev,
#define PIPE_CONTROL_FLUSH(addr) \
do { \
OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \
PIPE_CONTROL_DEPTH_STALL); \
PIPE_CONTROL_DEPTH_STALL | 2); \
OUT_RING(addr | PIPE_CONTROL_GLOBAL_GTT); \
OUT_RING(0); \
OUT_RING(0); \
@ -236,7 +236,19 @@ render_ring_add_request(struct drm_device *dev,
u32 seqno;
drm_i915_private_t *dev_priv = dev->dev_private;
seqno = intel_ring_get_seqno(dev, ring);
if (HAS_PIPE_CONTROL(dev)) {
if (IS_GEN6(dev)) {
BEGIN_LP_RING(6);
OUT_RING(GFX_OP_PIPE_CONTROL | 3);
OUT_RING(PIPE_CONTROL_QW_WRITE |
PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_IS_FLUSH |
PIPE_CONTROL_NOTIFY);
OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT);
OUT_RING(seqno);
OUT_RING(0);
OUT_RING(0);
ADVANCE_LP_RING();
} else if (HAS_PIPE_CONTROL(dev)) {
u32 scratch_addr = dev_priv->seqno_gfx_addr + 128;
/*