diff options
| author | Owain Ainsworth <oga@cvs.openbsd.org> | 2008-11-17 00:45:40 +0000 |
|---|---|---|
| committer | Owain Ainsworth <oga@cvs.openbsd.org> | 2008-11-17 00:45:40 +0000 |
| commit | 244fa5b1cfb494b6ab136ca8dda2b5919847ce14 (patch) | |
| tree | e90fd65f978679429602edf1bd6382448f112368 /sys/dev/pci/drm/i915_drv.h | |
| parent | fce1da5397e710f5ceb9ceaa074ba54129dc3117 (diff) | |
Don't put the buffer counter in a reserved part of the status page.
From intel.
Diffstat (limited to 'sys/dev/pci/drm/i915_drv.h')
| -rw-r--r-- | sys/dev/pci/drm/i915_drv.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/sys/dev/pci/drm/i915_drv.h b/sys/dev/pci/drm/i915_drv.h index 6d1d600d8a5..4196d877aeb 100644 --- a/sys/dev/pci/drm/i915_drv.h +++ b/sys/dev/pci/drm/i915_drv.h @@ -430,16 +430,19 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller); * MI_STORE_DATA_IMM. * * The following dwords have a reserved meaning: - * 0: ISR copy, updated when an ISR bit not set in the HWSTAM changes. - * 4: ring 0 head pointer - * 5: ring 1 head pointer (915-class) - * 6: ring 2 head pointer (915-class) + * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes. + * 0x04: ring 0 head pointer + * 0x05: ring 1 head pointer (915-class) + * 0x06: ring 2 head pointer (915-class) + * 0x10-0x1b: Context status DWords (GM45) + * 0x1f: Last written status offset. (GM45) * - * The area from dword 0x10 to 0x3ff is available for driver usage. + * The area from dword 0x20 to 0x3ff is available for driver usage. */ #define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg]) -#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, 5) -#define I915_GEM_HWS_INDEX 0x10 +#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX) +#define I915_GEM_HWS_INDEX 0x20 +#define I915_BREADCRUMB_INDEX 0x21 /* * 3D instructions used by the kernel |