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linux_dsm_epyc7002/drivers/gpu/drm/i915/intel_gpu_commands.h
Chris Wilson e886196469 drm/i915: Use HW semaphores for inter-engine synchronisation on gen8+ 
Having introduced per-context seqno, we now have a means to identity
progress across the system without feel of rollback as befell the
global_seqno. That is we can program a MI_SEMAPHORE_WAIT operation in
advance of submission safe in the knowledge that our target seqno and
address is stable.

However, since we are telling the GPU to busy-spin on the target address
until it matches the signaling seqno, we only want to do so when we are
sure that busy-spin will be completed quickly. To achieve this we only
submit the request to HW once the signaler is itself executing (modulo
preemption causing us to wait longer), and we only do so for default and
above priority requests (so that idle priority tasks never themselves
hog the GPU waiting for others).

As might be reasonably expected, HW semaphores excel in inter-engine
synchronisation microbenchmarks (where the 3x reduced latency / increased
throughput more than offset the power cost of spinning on a second ring)
and have significant improvement (can be up to ~10%, most see no change)
for single clients that utilize multiple engines (typically media players
and transcoders), without regressing multiple clients that can saturate
the system or changing the power envelope dramatically.

v3: Drop the older NEQ branch, now we pin the signaler's HWSP anyway.
v4: Tell the world and include it as part of scheduler caps.

Testcase: igt/gem_exec_whisper
Testcase: igt/benchmarks/gem_wsim
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190301170901.8340-3-chris@chris-wilson.co.uk
2019-03-01 17:45:07 +00:00

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/*
* SPDX-License-Identifier: MIT
*
* Copyright <20> 2003-2018 Intel Corporation
*/
#ifndef _INTEL_GPU_COMMANDS_H_
#define _INTEL_GPU_COMMANDS_H_
/*
* Instruction field definitions used by the command parser
*/
#define INSTR_CLIENT_SHIFT 29
#define INSTR_MI_CLIENT 0x0
#define INSTR_BC_CLIENT 0x2
#define INSTR_RC_CLIENT 0x3
#define INSTR_SUBCLIENT_SHIFT 27
#define INSTR_SUBCLIENT_MASK 0x18000000
#define INSTR_MEDIA_SUBCLIENT 0x2
#define INSTR_26_TO_24_MASK 0x7000000
#define INSTR_26_TO_24_SHIFT 24
/*
* Memory interface instructions used by the kernel
*/
#define MI_INSTR(opcode, flags) (((opcode) << 23) | (flags))
/* Many MI commands use bit 22 of the header dword for GGTT vs PPGTT */
#define MI_GLOBAL_GTT (1<<22)
#define MI_NOOP MI_INSTR(0, 0)
#define MI_USER_INTERRUPT MI_INSTR(0x02, 0)
#define MI_WAIT_FOR_EVENT MI_INSTR(0x03, 0)
#define MI_WAIT_FOR_OVERLAY_FLIP (1<<16)
#define MI_WAIT_FOR_PLANE_B_FLIP (1<<6)
#define MI_WAIT_FOR_PLANE_A_FLIP (1<<2)
#define MI_WAIT_FOR_PLANE_A_SCANLINES (1<<1)
#define MI_FLUSH MI_INSTR(0x04, 0)
#define MI_READ_FLUSH (1 << 0)
#define MI_EXE_FLUSH (1 << 1)
#define MI_NO_WRITE_FLUSH (1 << 2)
#define MI_SCENE_COUNT (1 << 3) /* just increment scene count */
#define MI_END_SCENE (1 << 4) /* flush binner and incr scene count */
#define MI_INVALIDATE_ISP (1 << 5) /* invalidate indirect state pointers */
#define MI_REPORT_HEAD MI_INSTR(0x07, 0)
#define MI_ARB_ON_OFF MI_INSTR(0x08, 0)
#define MI_ARB_ENABLE (1<<0)
#define MI_ARB_DISABLE (0<<0)
#define MI_BATCH_BUFFER_END MI_INSTR(0x0a, 0)
#define MI_SUSPEND_FLUSH MI_INSTR(0x0b, 0)
#define MI_SUSPEND_FLUSH_EN (1<<0)
#define MI_SET_APPID MI_INSTR(0x0e, 0)
#define MI_OVERLAY_FLIP MI_INSTR(0x11, 0)
#define MI_OVERLAY_CONTINUE (0x0<<21)
#define MI_OVERLAY_ON (0x1<<21)
#define MI_OVERLAY_OFF (0x2<<21)
#define MI_LOAD_SCAN_LINES_INCL MI_INSTR(0x12, 0)
#define MI_DISPLAY_FLIP MI_INSTR(0x14, 2)
#define MI_DISPLAY_FLIP_I915 MI_INSTR(0x14, 1)
#define MI_DISPLAY_FLIP_PLANE(n) ((n) << 20)
/* IVB has funny definitions for which plane to flip. */
#define MI_DISPLAY_FLIP_IVB_PLANE_A (0 << 19)
#define MI_DISPLAY_FLIP_IVB_PLANE_B (1 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_A (2 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_B (3 << 19)
#define MI_DISPLAY_FLIP_IVB_PLANE_C (4 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_C (5 << 19)
/* SKL ones */
#define MI_DISPLAY_FLIP_SKL_PLANE_1_A (0 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_1_B (1 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_1_C (2 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_2_A (4 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_2_B (5 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_2_C (6 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_3_A (7 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_3_B (8 << 8)
#define MI_DISPLAY_FLIP_SKL_PLANE_3_C (9 << 8)
#define MI_SEMAPHORE_MBOX MI_INSTR(0x16, 1) /* gen6, gen7 */
#define MI_SEMAPHORE_GLOBAL_GTT (1<<22)
#define MI_SEMAPHORE_UPDATE (1<<21)
#define MI_SEMAPHORE_COMPARE (1<<20)
#define MI_SEMAPHORE_REGISTER (1<<18)
#define MI_SEMAPHORE_SYNC_VR (0<<16) /* RCS wait for VCS (RVSYNC) */
#define MI_SEMAPHORE_SYNC_VER (1<<16) /* RCS wait for VECS (RVESYNC) */
#define MI_SEMAPHORE_SYNC_BR (2<<16) /* RCS wait for BCS (RBSYNC) */
#define MI_SEMAPHORE_SYNC_BV (0<<16) /* VCS wait for BCS (VBSYNC) */
#define MI_SEMAPHORE_SYNC_VEV (1<<16) /* VCS wait for VECS (VVESYNC) */
#define MI_SEMAPHORE_SYNC_RV (2<<16) /* VCS wait for RCS (VRSYNC) */
#define MI_SEMAPHORE_SYNC_RB (0<<16) /* BCS wait for RCS (BRSYNC) */
#define MI_SEMAPHORE_SYNC_VEB (1<<16) /* BCS wait for VECS (BVESYNC) */
#define MI_SEMAPHORE_SYNC_VB (2<<16) /* BCS wait for VCS (BVSYNC) */
#define MI_SEMAPHORE_SYNC_BVE (0<<16) /* VECS wait for BCS (VEBSYNC) */
#define MI_SEMAPHORE_SYNC_VVE (1<<16) /* VECS wait for VCS (VEVSYNC) */
#define MI_SEMAPHORE_SYNC_RVE (2<<16) /* VECS wait for RCS (VERSYNC) */
#define MI_SEMAPHORE_SYNC_INVALID (3<<16)
#define MI_SEMAPHORE_SYNC_MASK (3<<16)
#define MI_SET_CONTEXT MI_INSTR(0x18, 0)
#define MI_MM_SPACE_GTT (1<<8)
#define MI_MM_SPACE_PHYSICAL (0<<8)
#define MI_SAVE_EXT_STATE_EN (1<<3)
#define MI_RESTORE_EXT_STATE_EN (1<<2)
#define MI_FORCE_RESTORE (1<<1)
#define MI_RESTORE_INHIBIT (1<<0)
#define HSW_MI_RS_SAVE_STATE_EN (1<<3)
#define HSW_MI_RS_RESTORE_STATE_EN (1<<2)
#define MI_SEMAPHORE_SIGNAL MI_INSTR(0x1b, 0) /* GEN8+ */
#define MI_SEMAPHORE_TARGET(engine) ((engine)<<15)
#define MI_SEMAPHORE_WAIT MI_INSTR(0x1c, 2) /* GEN8+ */
#define MI_SEMAPHORE_POLL (1 << 15)
#define MI_SEMAPHORE_SAD_GT_SDD (0 << 12)
#define MI_SEMAPHORE_SAD_GTE_SDD (1 << 12)
#define MI_SEMAPHORE_SAD_LT_SDD (2 << 12)
#define MI_SEMAPHORE_SAD_LTE_SDD (3 << 12)
#define MI_SEMAPHORE_SAD_EQ_SDD (4 << 12)
#define MI_SEMAPHORE_SAD_NEQ_SDD (5 << 12)
#define MI_STORE_DWORD_IMM MI_INSTR(0x20, 1)
#define MI_STORE_DWORD_IMM_GEN4 MI_INSTR(0x20, 2)
#define MI_MEM_VIRTUAL (1 << 22) /* 945,g33,965 */
#define MI_USE_GGTT (1 << 22) /* g4x+ */
#define MI_STORE_DWORD_INDEX MI_INSTR(0x21, 1)
/*
* Official intel docs are somewhat sloppy concerning MI_LOAD_REGISTER_IMM:
* - Always issue a MI_NOOP _before_ the MI_LOAD_REGISTER_IMM - otherwise hw
* simply ignores the register load under certain conditions.
* - One can actually load arbitrary many arbitrary registers: Simply issue x
* address/value pairs. Don't overdue it, though, x <= 2^4 must hold!
*/
#define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*(x)-1)
#define MI_LRI_FORCE_POSTED (1<<12)
#define MI_STORE_REGISTER_MEM MI_INSTR(0x24, 1)
#define MI_STORE_REGISTER_MEM_GEN8 MI_INSTR(0x24, 2)
#define MI_SRM_LRM_GLOBAL_GTT (1<<22)
#define MI_FLUSH_DW MI_INSTR(0x26, 1) /* for GEN6 */
#define MI_FLUSH_DW_STORE_INDEX (1<<21)
#define MI_INVALIDATE_TLB (1<<18)
#define MI_FLUSH_DW_OP_STOREDW (1<<14)
#define MI_FLUSH_DW_OP_MASK (3<<14)
#define MI_FLUSH_DW_NOTIFY (1<<8)
#define MI_INVALIDATE_BSD (1<<7)
#define MI_FLUSH_DW_USE_GTT (1<<2)
#define MI_FLUSH_DW_USE_PPGTT (0<<2)
#define MI_LOAD_REGISTER_MEM MI_INSTR(0x29, 1)
#define MI_LOAD_REGISTER_MEM_GEN8 MI_INSTR(0x29, 2)
#define MI_BATCH_BUFFER MI_INSTR(0x30, 1)
#define MI_BATCH_NON_SECURE (1)
/* for snb/ivb/vlv this also means "batch in ppgtt" when ppgtt is enabled. */
#define MI_BATCH_NON_SECURE_I965 (1<<8)
#define MI_BATCH_PPGTT_HSW (1<<8)
#define MI_BATCH_NON_SECURE_HSW (1<<13)
#define MI_BATCH_BUFFER_START MI_INSTR(0x31, 0)
#define MI_BATCH_GTT (2<<6) /* aliased with (1<<7) on gen4 */
#define MI_BATCH_BUFFER_START_GEN8 MI_INSTR(0x31, 1)
#define MI_BATCH_RESOURCE_STREAMER (1<<10)
/*
* 3D instructions used by the kernel
*/
#define GFX_INSTR(opcode, flags) ((0x3 << 29) | ((opcode) << 24) | (flags))
#define GEN9_MEDIA_POOL_STATE ((0x3 << 29) | (0x2 << 27) | (0x5 << 16) | 4)
#define GEN9_MEDIA_POOL_ENABLE (1 << 31)
#define GFX_OP_RASTER_RULES ((0x3<<29)|(0x7<<24))
#define GFX_OP_SCISSOR ((0x3<<29)|(0x1c<<24)|(0x10<<19))
#define SC_UPDATE_SCISSOR (0x1<<1)
#define SC_ENABLE_MASK (0x1<<0)
#define SC_ENABLE (0x1<<0)
#define GFX_OP_LOAD_INDIRECT ((0x3<<29)|(0x1d<<24)|(0x7<<16))
#define GFX_OP_SCISSOR_INFO ((0x3<<29)|(0x1d<<24)|(0x81<<16)|(0x1))
#define SCI_YMIN_MASK (0xffff<<16)
#define SCI_XMIN_MASK (0xffff<<0)
#define SCI_YMAX_MASK (0xffff<<16)
#define SCI_XMAX_MASK (0xffff<<0)
#define GFX_OP_SCISSOR_ENABLE ((0x3<<29)|(0x1c<<24)|(0x10<<19))
#define GFX_OP_SCISSOR_RECT ((0x3<<29)|(0x1d<<24)|(0x81<<16)|1)
#define GFX_OP_COLOR_FACTOR ((0x3<<29)|(0x1d<<24)|(0x1<<16)|0x0)
#define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16))
#define GFX_OP_MAP_INFO ((0x3<<29)|(0x1d<<24)|0x4)
#define GFX_OP_DESTBUFFER_VARS ((0x3<<29)|(0x1d<<24)|(0x85<<16)|0x0)
#define GFX_OP_DESTBUFFER_INFO ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1)
#define GFX_OP_DRAWRECT_INFO ((0x3<<29)|(0x1d<<24)|(0x80<<16)|(0x3))
#define GFX_OP_DRAWRECT_INFO_I965 ((0x7900<<16)|0x2)
#define COLOR_BLT_CMD (2<<29 | 0x40<<22 | (5-2))
#define SRC_COPY_BLT_CMD ((2<<29)|(0x43<<22)|4)
#define XY_SRC_COPY_BLT_CMD ((2<<29)|(0x53<<22)|6)
#define XY_MONO_SRC_COPY_IMM_BLT ((2<<29)|(0x71<<22)|5)
#define BLT_WRITE_A (2<<20)
#define BLT_WRITE_RGB (1<<20)
#define BLT_WRITE_RGBA (BLT_WRITE_RGB | BLT_WRITE_A)
#define BLT_DEPTH_8 (0<<24)
#define BLT_DEPTH_16_565 (1<<24)
#define BLT_DEPTH_16_1555 (2<<24)
#define BLT_DEPTH_32 (3<<24)
#define BLT_ROP_SRC_COPY (0xcc<<16)
#define BLT_ROP_COLOR_COPY (0xf0<<16)
#define XY_SRC_COPY_BLT_SRC_TILED (1<<15) /* 965+ only */
#define XY_SRC_COPY_BLT_DST_TILED (1<<11) /* 965+ only */
#define CMD_OP_DISPLAYBUFFER_INFO ((0x0<<29)|(0x14<<23)|2)
#define ASYNC_FLIP (1<<22)
#define DISPLAY_PLANE_A (0<<20)
#define DISPLAY_PLANE_B (1<<20)
#define GFX_OP_PIPE_CONTROL(len) ((0x3<<29)|(0x3<<27)|(0x2<<24)|((len)-2))
#define PIPE_CONTROL_FLUSH_L3 (1<<27)
#define PIPE_CONTROL_GLOBAL_GTT_IVB (1<<24) /* gen7+ */
#define PIPE_CONTROL_MMIO_WRITE (1<<23)
#define PIPE_CONTROL_STORE_DATA_INDEX (1<<21)
#define PIPE_CONTROL_CS_STALL (1<<20)
#define PIPE_CONTROL_TLB_INVALIDATE (1<<18)
#define PIPE_CONTROL_MEDIA_STATE_CLEAR (1<<16)
#define PIPE_CONTROL_QW_WRITE (1<<14)
#define PIPE_CONTROL_POST_SYNC_OP_MASK (3<<14)
#define PIPE_CONTROL_DEPTH_STALL (1<<13)
#define PIPE_CONTROL_WRITE_FLUSH (1<<12)
#define PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH (1<<12) /* gen6+ */
#define PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE (1<<11) /* MBZ on ILK */
#define PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE (1<<10) /* GM45+ only */
#define PIPE_CONTROL_INDIRECT_STATE_DISABLE (1<<9)
#define PIPE_CONTROL_NOTIFY (1<<8)
#define PIPE_CONTROL_FLUSH_ENABLE (1<<7) /* gen7+ */
#define PIPE_CONTROL_DC_FLUSH_ENABLE (1<<5)
#define PIPE_CONTROL_VF_CACHE_INVALIDATE (1<<4)
#define PIPE_CONTROL_CONST_CACHE_INVALIDATE (1<<3)
#define PIPE_CONTROL_STATE_CACHE_INVALIDATE (1<<2)
#define PIPE_CONTROL_STALL_AT_SCOREBOARD (1<<1)
#define PIPE_CONTROL_DEPTH_CACHE_FLUSH (1<<0)
#define PIPE_CONTROL_GLOBAL_GTT (1<<2) /* in addr dword */
/*
* Commands used only by the command parser
*/
#define MI_SET_PREDICATE MI_INSTR(0x01, 0)
#define MI_ARB_CHECK MI_INSTR(0x05, 0)
#define MI_RS_CONTROL MI_INSTR(0x06, 0)
#define MI_URB_ATOMIC_ALLOC MI_INSTR(0x09, 0)
#define MI_PREDICATE MI_INSTR(0x0C, 0)
#define MI_RS_CONTEXT MI_INSTR(0x0F, 0)
#define MI_TOPOLOGY_FILTER MI_INSTR(0x0D, 0)
#define MI_LOAD_SCAN_LINES_EXCL MI_INSTR(0x13, 0)
#define MI_URB_CLEAR MI_INSTR(0x19, 0)
#define MI_UPDATE_GTT MI_INSTR(0x23, 0)
#define MI_CLFLUSH MI_INSTR(0x27, 0)
#define MI_REPORT_PERF_COUNT MI_INSTR(0x28, 0)
#define MI_REPORT_PERF_COUNT_GGTT (1<<0)
#define MI_LOAD_REGISTER_REG MI_INSTR(0x2A, 0)
#define MI_RS_STORE_DATA_IMM MI_INSTR(0x2B, 0)
#define MI_LOAD_URB_MEM MI_INSTR(0x2C, 0)
#define MI_STORE_URB_MEM MI_INSTR(0x2D, 0)
#define MI_CONDITIONAL_BATCH_BUFFER_END MI_INSTR(0x36, 0)
#define PIPELINE_SELECT ((0x3<<29)|(0x1<<27)|(0x1<<24)|(0x4<<16))
#define GFX_OP_3DSTATE_VF_STATISTICS ((0x3<<29)|(0x1<<27)|(0x0<<24)|(0xB<<16))
#define MEDIA_VFE_STATE ((0x3<<29)|(0x2<<27)|(0x0<<24)|(0x0<<16))
#define MEDIA_VFE_STATE_MMIO_ACCESS_MASK (0x18)
#define GPGPU_OBJECT ((0x3<<29)|(0x2<<27)|(0x1<<24)|(0x4<<16))
#define GPGPU_WALKER ((0x3<<29)|(0x2<<27)|(0x1<<24)|(0x5<<16))
#define GFX_OP_3DSTATE_DX9_CONSTANTF_VS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x39<<16))
#define GFX_OP_3DSTATE_DX9_CONSTANTF_PS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x3A<<16))
#define GFX_OP_3DSTATE_SO_DECL_LIST \
((0x3<<29)|(0x3<<27)|(0x1<<24)|(0x17<<16))
#define GFX_OP_3DSTATE_BINDING_TABLE_EDIT_VS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x43<<16))
#define GFX_OP_3DSTATE_BINDING_TABLE_EDIT_GS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x44<<16))
#define GFX_OP_3DSTATE_BINDING_TABLE_EDIT_HS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x45<<16))
#define GFX_OP_3DSTATE_BINDING_TABLE_EDIT_DS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x46<<16))
#define GFX_OP_3DSTATE_BINDING_TABLE_EDIT_PS \
((0x3<<29)|(0x3<<27)|(0x0<<24)|(0x47<<16))
#define MFX_WAIT ((0x3<<29)|(0x1<<27)|(0x0<<16))
#define COLOR_BLT ((0x2<<29)|(0x40<<22))
#define SRC_COPY_BLT ((0x2<<29)|(0x43<<22))
#endif /* _INTEL_GPU_COMMANDS_H_ */
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