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| author | Ben Widawsky <ben@bwidawsk.net> | 2012-02-09 10:15:18 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-02-12 00:21:16 +0100 |
| commit | dd202c6dd612beecf87b8b85c2f09b23f77364a2 (patch) | |
| tree | 2b4a3b103f81b5da0514b34224efd2055fc65797 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 5f7f726d2caf1e51a39872e5a30b6984235d388e (diff) | |
| download | op-kernel-dev-dd202c6dd612beecf87b8b85c2f09b23f77364a2.zip op-kernel-dev-dd202c6dd612beecf87b8b85c2f09b23f77364a2.tar.gz | |
drm/i915: use gtfifodbg
Add register definitions for GTFIFODBG, and clear it during init time to
make sure state is correct.
This register tells us if either a read, or a write occurred while the
fifo was full. It seems like bit 2 is an OR of bit 0 and bit 1, so we
check that as well, but the documents are not quite clear.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by (v1): Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 7b4477c..5c62b78 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3703,6 +3703,12 @@ #define ECOBUS 0xa180 #define FORCEWAKE_MT_ENABLE (1<<5) +#define GTFIFODBG 0x120000 +#define GT_FIFO_CPU_ERROR_MASK 7 +#define GT_FIFO_OVFERR (1<<2) +#define GT_FIFO_IAWRERR (1<<1) +#define GT_FIFO_IARDERR (1<<0) + #define GT_FIFO_FREE_ENTRIES 0x120008 #define GT_FIFO_NUM_RESERVED_ENTRIES 20 |
