diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-04 21:11:25 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-05 08:40:05 +0100 |
| commit | 62ae14b1edca0aaf27b84b3fa069177dd794e37f (patch) | |
| tree | ff6da3d92e9af2e88749b273d850add34e290b27 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 615e5000830dd24b8dc6876a6a1babbeda998fdf (diff) | |
| download | op-kernel-dev-62ae14b1edca0aaf27b84b3fa069177dd794e37f.zip op-kernel-dev-62ae14b1edca0aaf27b84b3fa069177dd794e37f.tar.gz | |
drm/i915: Share the computation of ring size for RING_CTL register
Since both legacy and execlists want to populate the RING_CTL register,
share the computation of the right bits for the ring->size. We can then
stop masking errors and explicitly forbid them during creation!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161004201132.21801-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8d44cee..acc767a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1605,6 +1605,7 @@ enum skl_disp_power_wells { #define RING_HEAD(base) _MMIO((base)+0x34) #define RING_START(base) _MMIO((base)+0x38) #define RING_CTL(base) _MMIO((base)+0x3c) +#define RING_CTL_SIZE(size) ((size) - PAGE_SIZE) /* in bytes -> pages */ #define RING_SYNC_0(base) _MMIO((base)+0x40) #define RING_SYNC_1(base) _MMIO((base)+0x44) #define RING_SYNC_2(base) _MMIO((base)+0x48) |
