Commit 45503ded authored by Keith Packard's avatar Keith Packard Committed by Dave Airlie
Browse files

drm/i915: Define MI_ARB_STATE bits



The i915 memory arbiter has a register full of configuration
bits which are currently not defined in the driver header file.
Signed-off-by: Keith Packard's avatarKeith Packard <keithp@keithp.com>
cc: stable@kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 4ede00c9
......@@ -359,6 +359,70 @@
#define LM_BURST_LENGTH 0x00000700
#define LM_FIFO_WATERMARK 0x0000001F
#define MI_ARB_STATE 0x020e4 /* 915+ only */
#define MI_ARB_MASK_SHIFT 16 /* shift for enable bits */
/* Make render/texture TLB fetches lower priorty than associated data
* fetches. This is not turned on by default
*/
#define MI_ARB_RENDER_TLB_LOW_PRIORITY (1 << 15)
/* Isoch request wait on GTT enable (Display A/B/C streams).
* Make isoch requests stall on the TLB update. May cause
* display underruns (test mode only)
*/
#define MI_ARB_ISOCH_WAIT_GTT (1 << 14)
/* Block grant count for isoch requests when block count is
* set to a finite value.
*/
#define MI_ARB_BLOCK_GRANT_MASK (3 << 12)
#define MI_ARB_BLOCK_GRANT_8 (0 << 12) /* for 3 display planes */
#define MI_ARB_BLOCK_GRANT_4 (1 << 12) /* for 2 display planes */
#define MI_ARB_BLOCK_GRANT_2 (2 << 12) /* for 1 display plane */
#define MI_ARB_BLOCK_GRANT_0 (3 << 12) /* don't use */
/* Enable render writes to complete in C2/C3/C4 power states.
* If this isn't enabled, render writes are prevented in low
* power states. That seems bad to me.
*/
#define MI_ARB_C3_LP_WRITE_ENABLE (1 << 11)
/* This acknowledges an async flip immediately instead
* of waiting for 2TLB fetches.
*/
#define MI_ARB_ASYNC_FLIP_ACK_IMMEDIATE (1 << 10)
/* Enables non-sequential data reads through arbiter
*/
#define MI_ARB_DUAL_DATA_PHASE_DISABLE (1 << 9)
/* Disable FSB snooping of cacheable write cycles from binner/render
* command stream
*/
#define MI_ARB_CACHE_SNOOP_DISABLE (1 << 8)
/* Arbiter time slice for non-isoch streams */
#define MI_ARB_TIME_SLICE_MASK (7 << 5)
#define MI_ARB_TIME_SLICE_1 (0 << 5)
#define MI_ARB_TIME_SLICE_2 (1 << 5)
#define MI_ARB_TIME_SLICE_4 (2 << 5)
#define MI_ARB_TIME_SLICE_6 (3 << 5)
#define MI_ARB_TIME_SLICE_8 (4 << 5)
#define MI_ARB_TIME_SLICE_10 (5 << 5)
#define MI_ARB_TIME_SLICE_14 (6 << 5)
#define MI_ARB_TIME_SLICE_16 (7 << 5)
/* Low priority grace period page size */
#define MI_ARB_LOW_PRIORITY_GRACE_4KB (0 << 4) /* default */
#define MI_ARB_LOW_PRIORITY_GRACE_8KB (1 << 4)
/* Disable display A/B trickle feed */
#define MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE (1 << 2)
/* Set display plane priority */
#define MI_ARB_DISPLAY_PRIORITY_A_B (0 << 0) /* display A > display B */
#define MI_ARB_DISPLAY_PRIORITY_B_A (1 << 0) /* display B > display A */
#define CACHE_MODE_0 0x02120 /* 915+ only */
#define CM0_MASK_SHIFT 16
#define CM0_IZ_OPT_DISABLE (1<<6)
......
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