[PATCH 2/4] drm/amdkfd: Add trap handler for CWSR
Oded Gabbay
oded.gabbay at gmail.com
Sun Nov 19 13:20:47 UTC 2017
On Tue, Nov 14, 2017 at 11:41 PM, Felix Kuehling <Felix.Kuehling at amd.com> wrote:
> The trap handler is like an interrupt handler running on the GPU
> compute unit. It is needed for supporting CWSR (compute wave
> save/restore).
>
> This file defines an array with the pre-compiled GFXv8 shader ISA.
> The assembly code is included for reference in #if 0 ... #endif.
>
> Signed-off-by: Shaoyun.liu <shaoyun.liu at amd.com>
> Signed-off-by: Jay Cornwall <Jay.Cornwall at amd.com>
> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
> ---
> .../gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm | 1384 ++++++++++++++++++++
> 1 file changed, 1384 insertions(+)
> create mode 100644 drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm
> new file mode 100644
> index 0000000..751cc2e
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm
> @@ -0,0 +1,1384 @@
> +/*
> + * Copyright 2015-2017 Advanced Micro Devices, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#if 0
> +HW (VI) source code for CWSR trap handler
> +#Version 18 + multiple trap handler
> +
> +// this performance-optimal version was originally from Seven Xu at SRDC
> +
> +// Revison #18 --...
> +/* Rev History
> +** #1. Branch from gc dv. //gfxip/gfx8/main/src/test/suites/block/cs/sr/cs_trap_handler.sp3#1,#50, #51, #52-53(Skip, Already Fixed by PV), #54-56(merged),#57-58(mergerd, skiped-already fixed by PV)
> +** #4. SR Memory Layout:
> +** 1. VGPR-SGPR-HWREG-{LDS}
> +** 2. tba_hi.bits.26 - reconfigured as the first wave in tg bits, for defer Save LDS for a threadgroup.. performance concern..
> +** #5. Update: 1. Accurate g8sr_ts_save_d timestamp
> +** #6. Update: 1. Fix s_barrier usage; 2. VGPR s/r using swizzle buffer?(NoNeed, already matched the swizzle pattern, more investigation)
> +** #7. Update: 1. don't barrier if noLDS
> +** #8. Branch: 1. Branch to ver#0, which is very similar to gc dv version
> +** 2. Fix SQ issue by s_sleep 2
> +** #9. Update: 1. Fix scc restore failed issue, restore wave_status at last
> +** 2. optimize s_buffer save by burst 16sgprs...
> +** #10. Update 1. Optimize restore sgpr by busrt 16 sgprs.
> +** #11. Update 1. Add 2 more timestamp for debug version
> +** #12. Update 1. Add VGPR SR using DWx4, some case improve and some case drop performance
> +** #13. Integ 1. Always use MUBUF for PV trap shader...
> +** #14. Update 1. s_buffer_store soft clause...
> +** #15. Update 1. PERF - sclar write with glc:0/mtype0 to allow L2 combine. perf improvement a lot.
> +** #16. Update 1. PRRF - UNROLL LDS_DMA got 2500cycle save in IP tree
> +** #17. Update 1. FUNC - LDS_DMA has issues while ATC, replace with ds_read/buffer_store for save part[TODO restore part]
> +** 2. PERF - Save LDS before save VGPR to cover LDS save long latency...
> +** #18. Update 1. FUNC - Implicitly estore STATUS.VCCZ, which is not writable by s_setreg_b32
> +** 2. FUNC - Handle non-CWSR traps
> +*/
> +
> +var G8SR_WDMEM_HWREG_OFFSET = 0
> +var G8SR_WDMEM_SGPR_OFFSET = 128 // in bytes
> +
> +// Keep definition same as the app shader, These 2 time stamps are part of the app shader... Should before any Save and after restore.
> +
> +var G8SR_DEBUG_TIMESTAMP = 0
> +var G8SR_DEBUG_TS_SAVE_D_OFFSET = 40*4 // ts_save_d timestamp offset relative to SGPR_SR_memory_offset
> +var s_g8sr_ts_save_s = s[34:35] // save start
> +var s_g8sr_ts_sq_save_msg = s[36:37] // The save shader send SAVEWAVE msg to spi
> +var s_g8sr_ts_spi_wrexec = s[38:39] // the SPI write the sr address to SQ
> +var s_g8sr_ts_save_d = s[40:41] // save end
> +var s_g8sr_ts_restore_s = s[42:43] // restore start
> +var s_g8sr_ts_restore_d = s[44:45] // restore end
> +
> +var G8SR_VGPR_SR_IN_DWX4 = 0
> +var G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4 = 0x00100000 // DWx4 stride is 4*4Bytes
> +var G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4 = G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4
> +
> +
> +/*************************************************************************/
> +/* control on how to run the shader */
> +/*************************************************************************/
> +//any hack that needs to be made to run this code in EMU (either becasue various EMU code are not ready or no compute save & restore in EMU run)
> +var EMU_RUN_HACK = 0
> +var EMU_RUN_HACK_RESTORE_NORMAL = 0
> +var EMU_RUN_HACK_SAVE_NORMAL_EXIT = 0
> +var EMU_RUN_HACK_SAVE_SINGLE_WAVE = 0
> +var EMU_RUN_HACK_SAVE_FIRST_TIME = 0 //for interrupted restore in which the first save is through EMU_RUN_HACK
> +var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO = 0 //for interrupted restore in which the first save is through EMU_RUN_HACK
> +var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI = 0 //for interrupted restore in which the first save is through EMU_RUN_HACK
> +var SAVE_LDS = 1
> +var WG_BASE_ADDR_LO = 0x9000a000
> +var WG_BASE_ADDR_HI = 0x0
> +var WAVE_SPACE = 0x5000 //memory size that each wave occupies in workgroup state mem
> +var CTX_SAVE_CONTROL = 0x0
> +var CTX_RESTORE_CONTROL = CTX_SAVE_CONTROL
> +var SIM_RUN_HACK = 0 //any hack that needs to be made to run this code in SIM (either becasue various RTL code are not ready or no compute save & restore in RTL run)
> +var SGPR_SAVE_USE_SQC = 1 //use SQC D$ to do the write
> +var USE_MTBUF_INSTEAD_OF_MUBUF = 0 //becasue TC EMU curently asserts on 0 of // overload DFMT field to carry 4 more bits of stride for MUBUF opcodes
> +var SWIZZLE_EN = 0 //whether we use swizzled buffer addressing
> +
> +/**************************************************************************/
> +/* variables */
> +/**************************************************************************/
> +var SQ_WAVE_STATUS_INST_ATC_SHIFT = 23
> +var SQ_WAVE_STATUS_INST_ATC_MASK = 0x00800000
> +var SQ_WAVE_STATUS_SPI_PRIO_MASK = 0x00000006
> +
> +var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT = 12
> +var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE = 9
> +var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT = 8
> +var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE = 6
> +var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT = 24
> +var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE = 3 //FIXME sq.blk still has 4 bits at this time while SQ programming guide has 3 bits
> +
> +var SQ_WAVE_TRAPSTS_SAVECTX_MASK = 0x400
> +var SQ_WAVE_TRAPSTS_EXCE_MASK = 0x1FF // Exception mask
> +var SQ_WAVE_TRAPSTS_SAVECTX_SHIFT = 10
> +var SQ_WAVE_TRAPSTS_MEM_VIOL_MASK = 0x100
> +var SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT = 8
> +var SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK = 0x3FF
> +var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT = 0x0
> +var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE = 10
> +var SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK = 0xFFFFF800
> +var SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT = 11
> +var SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE = 21
> +
> +var SQ_WAVE_IB_STS_RCNT_SHIFT = 16 //FIXME
> +var SQ_WAVE_IB_STS_RCNT_SIZE = 4 //FIXME
> +var SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT = 15 //FIXME
> +var SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE = 1 //FIXME
> +var SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG = 0x00007FFF //FIXME
> +
> +var SQ_BUF_RSRC_WORD1_ATC_SHIFT = 24
> +var SQ_BUF_RSRC_WORD3_MTYPE_SHIFT = 27
> +
> +
> +/* Save */
> +var S_SAVE_BUF_RSRC_WORD1_STRIDE = 0x00040000 //stride is 4 bytes
> +var S_SAVE_BUF_RSRC_WORD3_MISC = 0x00807FAC //SQ_SEL_X/Y/Z/W, BUF_NUM_FORMAT_FLOAT, (0 for MUBUF stride[17:14] when ADD_TID_ENABLE and BUF_DATA_FORMAT_32 for MTBUF), ADD_TID_ENABLE
> +
> +var S_SAVE_SPI_INIT_ATC_MASK = 0x08000000 //bit[27]: ATC bit
> +var S_SAVE_SPI_INIT_ATC_SHIFT = 27
> +var S_SAVE_SPI_INIT_MTYPE_MASK = 0x70000000 //bit[30:28]: Mtype
> +var S_SAVE_SPI_INIT_MTYPE_SHIFT = 28
> +var S_SAVE_SPI_INIT_FIRST_WAVE_MASK = 0x04000000 //bit[26]: FirstWaveInTG
> +var S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT = 26
> +
> +var S_SAVE_PC_HI_RCNT_SHIFT = 28 //FIXME check with Brian to ensure all fields other than PC[47:0] can be used
> +var S_SAVE_PC_HI_RCNT_MASK = 0xF0000000 //FIXME
> +var S_SAVE_PC_HI_FIRST_REPLAY_SHIFT = 27 //FIXME
> +var S_SAVE_PC_HI_FIRST_REPLAY_MASK = 0x08000000 //FIXME
> +
> +var s_save_spi_init_lo = exec_lo
> +var s_save_spi_init_hi = exec_hi
> +
> + //tba_lo and tba_hi need to be saved/restored
> +var s_save_pc_lo = ttmp0 //{TTMP1, TTMP0} = {3’h0,pc_rewind[3:0], HT[0],trapID[7:0], PC[47:0]}
> +var s_save_pc_hi = ttmp1
> +var s_save_exec_lo = ttmp2
> +var s_save_exec_hi = ttmp3
> +var s_save_status = ttmp4
> +var s_save_trapsts = ttmp5 //not really used until the end of the SAVE routine
> +var s_save_xnack_mask_lo = ttmp6
> +var s_save_xnack_mask_hi = ttmp7
> +var s_save_buf_rsrc0 = ttmp8
> +var s_save_buf_rsrc1 = ttmp9
> +var s_save_buf_rsrc2 = ttmp10
> +var s_save_buf_rsrc3 = ttmp11
> +
> +var s_save_mem_offset = tma_lo
> +var s_save_alloc_size = s_save_trapsts //conflict
> +var s_save_tmp = s_save_buf_rsrc2 //shared with s_save_buf_rsrc2 (conflict: should not use mem access with s_save_tmp at the same time)
> +var s_save_m0 = tma_hi
> +
> +/* Restore */
> +var S_RESTORE_BUF_RSRC_WORD1_STRIDE = S_SAVE_BUF_RSRC_WORD1_STRIDE
> +var S_RESTORE_BUF_RSRC_WORD3_MISC = S_SAVE_BUF_RSRC_WORD3_MISC
> +
> +var S_RESTORE_SPI_INIT_ATC_MASK = 0x08000000 //bit[27]: ATC bit
> +var S_RESTORE_SPI_INIT_ATC_SHIFT = 27
> +var S_RESTORE_SPI_INIT_MTYPE_MASK = 0x70000000 //bit[30:28]: Mtype
> +var S_RESTORE_SPI_INIT_MTYPE_SHIFT = 28
> +var S_RESTORE_SPI_INIT_FIRST_WAVE_MASK = 0x04000000 //bit[26]: FirstWaveInTG
> +var S_RESTORE_SPI_INIT_FIRST_WAVE_SHIFT = 26
> +
> +var S_RESTORE_PC_HI_RCNT_SHIFT = S_SAVE_PC_HI_RCNT_SHIFT
> +var S_RESTORE_PC_HI_RCNT_MASK = S_SAVE_PC_HI_RCNT_MASK
> +var S_RESTORE_PC_HI_FIRST_REPLAY_SHIFT = S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
> +var S_RESTORE_PC_HI_FIRST_REPLAY_MASK = S_SAVE_PC_HI_FIRST_REPLAY_MASK
> +
> +var s_restore_spi_init_lo = exec_lo
> +var s_restore_spi_init_hi = exec_hi
> +
> +var s_restore_mem_offset = ttmp2
> +var s_restore_alloc_size = ttmp3
> +var s_restore_tmp = ttmp6 //tba_lo/hi need to be restored
> +var s_restore_mem_offset_save = s_restore_tmp //no conflict
> +
> +var s_restore_m0 = s_restore_alloc_size //no conflict
> +
> +var s_restore_mode = ttmp7
> +
> +var s_restore_pc_lo = ttmp0
> +var s_restore_pc_hi = ttmp1
> +var s_restore_exec_lo = tma_lo //no conflict
> +var s_restore_exec_hi = tma_hi //no conflict
> +var s_restore_status = ttmp4
> +var s_restore_trapsts = ttmp5
> +var s_restore_xnack_mask_lo = xnack_mask_lo
> +var s_restore_xnack_mask_hi = xnack_mask_hi
> +var s_restore_buf_rsrc0 = ttmp8
> +var s_restore_buf_rsrc1 = ttmp9
> +var s_restore_buf_rsrc2 = ttmp10
> +var s_restore_buf_rsrc3 = ttmp11
> +
> +/**************************************************************************/
> +/* trap handler entry points */
> +/**************************************************************************/
> +/* Shader Main*/
> +
> +shader main
> + asic(VI)
> + type(CS)
> +
> +
> + if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL)) //hack to use trap_id for determining save/restore
> + //FIXME VCCZ un-init assertion s_getreg_b32 s_save_status, hwreg(HW_REG_STATUS) //save STATUS since we will change SCC
> + s_and_b32 s_save_tmp, s_save_pc_hi, 0xffff0000 //change SCC
> + s_cmp_eq_u32 s_save_tmp, 0x007e0000 //Save: trap_id = 0x7e. Restore: trap_id = 0x7f.
> + s_cbranch_scc0 L_JUMP_TO_RESTORE //do not need to recover STATUS here since we are going to RESTORE
> + //FIXME s_setreg_b32 hwreg(HW_REG_STATUS), s_save_status //need to recover STATUS since we are going to SAVE
> + s_branch L_SKIP_RESTORE //NOT restore, SAVE actually
> + else
> + s_branch L_SKIP_RESTORE //NOT restore. might be a regular trap or save
> + end
> +
> +L_JUMP_TO_RESTORE:
> + s_branch L_RESTORE //restore
> +
> +L_SKIP_RESTORE:
> +
> + s_getreg_b32 s_save_status, hwreg(HW_REG_STATUS) //save STATUS since we will change SCC
> + s_andn2_b32 s_save_status, s_save_status, SQ_WAVE_STATUS_SPI_PRIO_MASK //check whether this is for save
> + s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS)
> + s_and_b32 s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_SAVECTX_MASK //check whether this is for save
> + s_cbranch_scc1 L_SAVE //this is the operation for save
> +
> + // ********* Handle non-CWSR traps *******************
> +if (!EMU_RUN_HACK)
> + /* read tba and tma for next level trap handler, ttmp4 is used as s_save_status */
> + s_load_dwordx4 [ttmp8,ttmp9,ttmp10, ttmp11], [tma_lo,tma_hi], 0
> + s_waitcnt lgkmcnt(0)
> + s_or_b32 ttmp7, ttmp8, ttmp9
> + s_cbranch_scc0 L_NO_NEXT_TRAP //next level trap handler not been set
> + s_setreg_b32 hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)
> + s_setpc_b64 [ttmp8,ttmp9] //jump to next level trap handler
> +
> +L_NO_NEXT_TRAP:
> + s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS)
> + s_and_b32 s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_EXCE_MASK // Check whether it is an exception
> + s_cbranch_scc1 L_EXCP_CASE // Exception, jump back to the shader program directly.
> + s_add_u32 ttmp0, ttmp0, 4 // S_TRAP case, add 4 to ttmp0
> + s_addc_u32 ttmp1, ttmp1, 0
> +L_EXCP_CASE:
> + s_and_b32 ttmp1, ttmp1, 0xFFFF
> + s_setreg_b32 hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)
> + s_rfe_b64 [ttmp0, ttmp1]
> +end
> + // ********* End handling of non-CWSR traps *******************
> +
> +/**************************************************************************/
> +/* save routine */
> +/**************************************************************************/
> +
> +L_SAVE:
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_save_s
> + s_waitcnt lgkmcnt(0) //FIXME, will cause xnack??
> +end
> +
> + //check whether there is mem_viol
> + s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS)
> + s_and_b32 s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_MEM_VIOL_MASK
> + s_cbranch_scc0 L_NO_PC_REWIND
> +
> + //if so, need rewind PC assuming GDS operation gets NACKed
> + s_mov_b32 s_save_tmp, 0 //clear mem_viol bit
> + s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT, 1), s_save_tmp //clear mem_viol bit
> + s_and_b32 s_save_pc_hi, s_save_pc_hi, 0x0000ffff //pc[47:32]
> + s_sub_u32 s_save_pc_lo, s_save_pc_lo, 8 //pc[31:0]-8
> + s_subb_u32 s_save_pc_hi, s_save_pc_hi, 0x0 // -scc
> +
> +L_NO_PC_REWIND:
> + s_mov_b32 s_save_tmp, 0 //clear saveCtx bit
> + s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_SAVECTX_SHIFT, 1), s_save_tmp //clear saveCtx bit
> +
> + s_mov_b32 s_save_xnack_mask_lo, xnack_mask_lo //save XNACK_MASK
> + s_mov_b32 s_save_xnack_mask_hi, xnack_mask_hi //save XNACK must before any memory operation
> + s_getreg_b32 s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_RCNT_SHIFT, SQ_WAVE_IB_STS_RCNT_SIZE) //save RCNT
> + s_lshl_b32 s_save_tmp, s_save_tmp, S_SAVE_PC_HI_RCNT_SHIFT
> + s_or_b32 s_save_pc_hi, s_save_pc_hi, s_save_tmp
> + s_getreg_b32 s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT, SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE) //save FIRST_REPLAY
> + s_lshl_b32 s_save_tmp, s_save_tmp, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
> + s_or_b32 s_save_pc_hi, s_save_pc_hi, s_save_tmp
> + s_getreg_b32 s_save_tmp, hwreg(HW_REG_IB_STS) //clear RCNT and FIRST_REPLAY in IB_STS
> + s_and_b32 s_save_tmp, s_save_tmp, SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG
> +
> + s_setreg_b32 hwreg(HW_REG_IB_STS), s_save_tmp
> +
> + /* inform SPI the readiness and wait for SPI's go signal */
> + s_mov_b32 s_save_exec_lo, exec_lo //save EXEC and use EXEC for the go signal from SPI
> + s_mov_b32 s_save_exec_hi, exec_hi
> + s_mov_b64 exec, 0x0 //clear EXEC to get ready to receive
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_sq_save_msg
> + s_waitcnt lgkmcnt(0)
> +end
> +
> + if (EMU_RUN_HACK)
> +
> + else
> + s_sendmsg sendmsg(MSG_SAVEWAVE) //send SPI a message and wait for SPI's write to EXEC
> + end
> +
> + L_SLEEP:
> + s_sleep 0x2 // sleep 1 (64clk) is not enough for 8 waves per SIMD, which will cause SQ hang, since the 7,8th wave could not get arbit to exec inst, while other waves are stuck into the sleep-loop and waiting for wrexec!=0
> +
> + if (EMU_RUN_HACK)
> +
> + else
> + s_cbranch_execz L_SLEEP
> + end
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_spi_wrexec
> + s_waitcnt lgkmcnt(0)
> +end
> +
> + /* setup Resource Contants */
> + if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_SINGLE_WAVE))
> + //calculate wd_addr using absolute thread id
> + v_readlane_b32 s_save_tmp, v9, 0
> + s_lshr_b32 s_save_tmp, s_save_tmp, 6
> + s_mul_i32 s_save_tmp, s_save_tmp, WAVE_SPACE
> + s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
> + s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
> + s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL
> + else
> + end
> + if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_SINGLE_WAVE))
> + s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
> + s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
> + s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL
> + else
> + end
> +
> +
> + s_mov_b32 s_save_buf_rsrc0, s_save_spi_init_lo //base_addr_lo
> + s_and_b32 s_save_buf_rsrc1, s_save_spi_init_hi, 0x0000FFFF //base_addr_hi
> + s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE
> + s_mov_b32 s_save_buf_rsrc2, 0 //NUM_RECORDS initial value = 0 (in bytes) although not neccessarily inited
> + s_mov_b32 s_save_buf_rsrc3, S_SAVE_BUF_RSRC_WORD3_MISC
> + s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_ATC_MASK
> + s_lshr_b32 s_save_tmp, s_save_tmp, (S_SAVE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT) //get ATC bit into position
> + s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, s_save_tmp //or ATC
> + s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_MTYPE_MASK
> + s_lshr_b32 s_save_tmp, s_save_tmp, (S_SAVE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT) //get MTYPE bits into position
> + s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, s_save_tmp //or MTYPE
> +
> + //FIXME right now s_save_m0/s_save_mem_offset use tma_lo/tma_hi (might need to save them before using them?)
> + s_mov_b32 s_save_m0, m0 //save M0
> +
> + /* global mem offset */
> + s_mov_b32 s_save_mem_offset, 0x0 //mem offset initial value = 0
> +
> +
> +
> +
> + /* save HW registers */
> + //////////////////////////////
> +
> + L_SAVE_HWREG:
> + // HWREG SR memory offset : size(VGPR)+size(SGPR)
> + get_vgpr_size_bytes(s_save_mem_offset)
> + get_sgpr_size_bytes(s_save_tmp)
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp
> +
> +
> + s_mov_b32 s_save_buf_rsrc2, 0x4 //NUM_RECORDS in bytes
> + if (SWIZZLE_EN)
> + s_add_u32 s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> +
> + write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset) //M0
> +
> + if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_FIRST_TIME))
> + s_add_u32 s_save_pc_lo, s_save_pc_lo, 4 //pc[31:0]+4
> + s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0 //carry bit over
> + s_mov_b32 tba_lo, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO
> + s_mov_b32 tba_hi, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI
> + end
> +
> + write_hwreg_to_mem(s_save_pc_lo, s_save_buf_rsrc0, s_save_mem_offset) //PC
> + write_hwreg_to_mem(s_save_pc_hi, s_save_buf_rsrc0, s_save_mem_offset)
> + write_hwreg_to_mem(s_save_exec_lo, s_save_buf_rsrc0, s_save_mem_offset) //EXEC
> + write_hwreg_to_mem(s_save_exec_hi, s_save_buf_rsrc0, s_save_mem_offset)
> + write_hwreg_to_mem(s_save_status, s_save_buf_rsrc0, s_save_mem_offset) //STATUS
> +
> + //s_save_trapsts conflicts with s_save_alloc_size
> + s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS)
> + write_hwreg_to_mem(s_save_trapsts, s_save_buf_rsrc0, s_save_mem_offset) //TRAPSTS
> +
> + write_hwreg_to_mem(s_save_xnack_mask_lo, s_save_buf_rsrc0, s_save_mem_offset) //XNACK_MASK_LO
> + write_hwreg_to_mem(s_save_xnack_mask_hi, s_save_buf_rsrc0, s_save_mem_offset) //XNACK_MASK_HI
> +
> + //use s_save_tmp would introduce conflict here between s_save_tmp and s_save_buf_rsrc2
> + s_getreg_b32 s_save_m0, hwreg(HW_REG_MODE) //MODE
> + write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
> + write_hwreg_to_mem(tba_lo, s_save_buf_rsrc0, s_save_mem_offset) //TBA_LO
> + write_hwreg_to_mem(tba_hi, s_save_buf_rsrc0, s_save_mem_offset) //TBA_HI
> +
> +
> +
> + /* the first wave in the threadgroup */
> + // save fist_wave bits in tba_hi unused bit.26
> + s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK // extract fisrt wave bit
> + //s_or_b32 tba_hi, s_save_tmp, tba_hi // save first wave bit to tba_hi.bits[26]
> + s_mov_b32 s_save_exec_hi, 0x0
> + s_or_b32 s_save_exec_hi, s_save_tmp, s_save_exec_hi // save first wave bit to s_save_exec_hi.bits[26]
> +
> +
> + /* save SGPRs */
> + // Save SGPR before LDS save, then the s0 to s4 can be used during LDS save...
> + //////////////////////////////
> +
> + // SGPR SR memory offset : size(VGPR)
> + get_vgpr_size_bytes(s_save_mem_offset)
> + // TODO, change RSRC word to rearrange memory layout for SGPRS
> +
> + s_getreg_b32 s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE) //spgr_size
> + s_add_u32 s_save_alloc_size, s_save_alloc_size, 1
> + s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 4 //Number of SGPRs = (sgpr_size + 1) * 16 (non-zero value)
> +
> + if (SGPR_SAVE_USE_SQC)
> + s_lshl_b32 s_save_buf_rsrc2, s_save_alloc_size, 2 //NUM_RECORDS in bytes
> + else
> + s_lshl_b32 s_save_buf_rsrc2, s_save_alloc_size, 8 //NUM_RECORDS in bytes (64 threads)
> + end
> +
> + if (SWIZZLE_EN)
> + s_add_u32 s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> +
> + // backup s_save_buf_rsrc0,1 to s_save_pc_lo/hi, since write_16sgpr_to_mem function will change the rsrc0
> + //s_mov_b64 s_save_pc_lo, s_save_buf_rsrc0
> + s_mov_b64 s_save_xnack_mask_lo, s_save_buf_rsrc0
> + s_add_u32 s_save_buf_rsrc0, s_save_buf_rsrc0, s_save_mem_offset
> + s_addc_u32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0
> +
> + s_mov_b32 m0, 0x0 //SGPR initial index value =0
> + L_SAVE_SGPR_LOOP:
> + // SGPR is allocated in 16 SGPR granularity
> + s_movrels_b64 s0, s0 //s0 = s[0+m0], s1 = s[1+m0]
> + s_movrels_b64 s2, s2 //s2 = s[2+m0], s3 = s[3+m0]
> + s_movrels_b64 s4, s4 //s4 = s[4+m0], s5 = s[5+m0]
> + s_movrels_b64 s6, s6 //s6 = s[6+m0], s7 = s[7+m0]
> + s_movrels_b64 s8, s8 //s8 = s[8+m0], s9 = s[9+m0]
> + s_movrels_b64 s10, s10 //s10 = s[10+m0], s11 = s[11+m0]
> + s_movrels_b64 s12, s12 //s12 = s[12+m0], s13 = s[13+m0]
> + s_movrels_b64 s14, s14 //s14 = s[14+m0], s15 = s[15+m0]
> +
> + write_16sgpr_to_mem(s0, s_save_buf_rsrc0, s_save_mem_offset) //PV: the best performance should be using s_buffer_store_dwordx4
> + s_add_u32 m0, m0, 16 //next sgpr index
> + s_cmp_lt_u32 m0, s_save_alloc_size //scc = (m0 < s_save_alloc_size) ? 1 : 0
> + s_cbranch_scc1 L_SAVE_SGPR_LOOP //SGPR save is complete?
> + // restore s_save_buf_rsrc0,1
> + //s_mov_b64 s_save_buf_rsrc0, s_save_pc_lo
> + s_mov_b64 s_save_buf_rsrc0, s_save_xnack_mask_lo
> +
> +
> +
> +
> + /* save first 4 VGPR, then LDS save could use */
> + // each wave will alloc 4 vgprs at least...
> + /////////////////////////////////////////////////////////////////////////////////////
> +
> + s_mov_b32 s_save_mem_offset, 0
> + s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on
> + s_mov_b32 exec_hi, 0xFFFFFFFF
> +
> + if (SWIZZLE_EN)
> + s_add_u32 s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> +
> + // VGPR Allocated in 4-GPR granularity
> +
> +if G8SR_VGPR_SR_IN_DWX4
> + // the const stride for DWx4 is 4*4 bytes
> + s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4 // const stride to 4*4 bytes
> +
> + buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
> +
> + s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE // reset const stride to 4 bytes
> +else
> + buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
> + buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256
> + buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*2
> + buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*3
> +end
> +
> +
> +
> + /* save LDS */
> + //////////////////////////////
> +
> + L_SAVE_LDS:
> +
> + // Change EXEC to all threads...
> + s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on
> + s_mov_b32 exec_hi, 0xFFFFFFFF
> +
> + s_getreg_b32 s_save_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) //lds_size
> + s_and_b32 s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF //lds_size is zero?
> + s_cbranch_scc0 L_SAVE_LDS_DONE //no lds used? jump to L_SAVE_DONE
> +
> + s_barrier //LDS is used? wait for other waves in the same TG
> + //s_and_b32 s_save_tmp, tba_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK //exec is still used here
> + s_and_b32 s_save_tmp, s_save_exec_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK //exec is still used here
> + s_cbranch_scc0 L_SAVE_LDS_DONE
> +
> + // first wave do LDS save;
> +
> + s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 6 //LDS size in dwords = lds_size * 64dw
> + s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 2 //LDS size in bytes
> + s_mov_b32 s_save_buf_rsrc2, s_save_alloc_size //NUM_RECORDS in bytes
> +
> + // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
> + //
> + get_vgpr_size_bytes(s_save_mem_offset)
> + get_sgpr_size_bytes(s_save_tmp)
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, get_hwreg_size_bytes()
> +
> +
> + if (SWIZZLE_EN)
> + s_add_u32 s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> + s_mov_b32 m0, 0x0 //lds_offset initial value = 0
> +
> +
> +var LDS_DMA_ENABLE = 0
> +var UNROLL = 0
> +if UNROLL==0 && LDS_DMA_ENABLE==1
> + s_mov_b32 s3, 256*2
> + s_nop 0
> + s_nop 0
> + s_nop 0
> + L_SAVE_LDS_LOOP:
> + //TODO: looks the 2 buffer_store/load clause for s/r will hurt performance.???
> + if (SAVE_LDS) //SPI always alloc LDS space in 128DW granularity
> + buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 // first 64DW
> + buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256 // second 64DW
> + end
> +
> + s_add_u32 m0, m0, s3 //every buffer_store_lds does 256 bytes
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, s3 //mem offset increased by 256 bytes
> + s_cmp_lt_u32 m0, s_save_alloc_size //scc=(m0 < s_save_alloc_size) ? 1 : 0
> + s_cbranch_scc1 L_SAVE_LDS_LOOP //LDS save is complete?
> +
> +elsif LDS_DMA_ENABLE==1 && UNROLL==1 // UNROOL , has ichace miss
> + // store from higest LDS address to lowest
> + s_mov_b32 s3, 256*2
> + s_sub_u32 m0, s_save_alloc_size, s3
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, m0
> + s_lshr_b32 s_save_alloc_size, s_save_alloc_size, 9 // how many 128 trunks...
> + s_sub_u32 s_save_alloc_size, 128, s_save_alloc_size // store from higheset addr to lowest
> + s_mul_i32 s_save_alloc_size, s_save_alloc_size, 6*4 // PC offset increment, each LDS save block cost 6*4 Bytes instruction
> + s_add_u32 s_save_alloc_size, s_save_alloc_size, 3*4 //2is the below 2 inst...//s_addc and s_setpc
> + s_nop 0
> + s_nop 0
> + s_nop 0 //pad 3 dw to let LDS_DMA align with 64Bytes
> + s_getpc_b64 s[0:1] // reuse s[0:1], since s[0:1] already saved
> + s_add_u32 s0, s0,s_save_alloc_size
> + s_addc_u32 s1, s1, 0
> + s_setpc_b64 s[0:1]
> +
> +
> + for var i =0; i< 128; i++
> + // be careful to make here a 64Byte aligned address, which could improve performance...
> + buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:0 // first 64DW
> + buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256 // second 64DW
> +
> + if i!=127
> + s_sub_u32 m0, m0, s3 // use a sgpr to shrink 2DW-inst to 1DW inst to improve performance , i.e. pack more LDS_DMA inst to one Cacheline
> + s_sub_u32 s_save_mem_offset, s_save_mem_offset, s3
> + end
> + end
> +
> +else // BUFFER_STORE
> + v_mbcnt_lo_u32_b32 v2, 0xffffffff, 0x0
> + v_mbcnt_hi_u32_b32 v3, 0xffffffff, v2 // tid
> + v_mul_i32_i24 v2, v3, 8 // tid*8
> + v_mov_b32 v3, 256*2
> + s_mov_b32 m0, 0x10000
> + s_mov_b32 s0, s_save_buf_rsrc3
> + s_and_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0xFF7FFFFF // disable add_tid
> + s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0x58000 //DFMT
> +
> +L_SAVE_LDS_LOOP_VECTOR:
> + ds_read_b64 v[0:1], v2 //x =LDS[a], byte address
> + s_waitcnt lgkmcnt(0)
> + buffer_store_dwordx2 v[0:1], v2, s_save_buf_rsrc0, s_save_mem_offset offen:1 glc:1 slc:1
> +// s_waitcnt vmcnt(0)
> + v_add_u32 v2, vcc[0:1], v2, v3
> + v_cmp_lt_u32 vcc[0:1], v2, s_save_alloc_size
> + s_cbranch_vccnz L_SAVE_LDS_LOOP_VECTOR
> +
> + // restore rsrc3
> + s_mov_b32 s_save_buf_rsrc3, s0
> +
> +end
> +
> +L_SAVE_LDS_DONE:
> +
> +
> + /* save VGPRs - set the Rest VGPRs */
> + //////////////////////////////////////////////////////////////////////////////////////
> + L_SAVE_VGPR:
> + // VGPR SR memory offset: 0
> + // TODO rearrange the RSRC words to use swizzle for VGPR save...
> +
> + s_mov_b32 s_save_mem_offset, (0+256*4) // for the rest VGPRs
> + s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on
> + s_mov_b32 exec_hi, 0xFFFFFFFF
> +
> + s_getreg_b32 s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE) //vpgr_size
> + s_add_u32 s_save_alloc_size, s_save_alloc_size, 1
> + s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 2 //Number of VGPRs = (vgpr_size + 1) * 4 (non-zero value) //FIXME for GFX, zero is possible
> + s_lshl_b32 s_save_buf_rsrc2, s_save_alloc_size, 8 //NUM_RECORDS in bytes (64 threads*4)
> + if (SWIZZLE_EN)
> + s_add_u32 s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> +
> + // VGPR Allocated in 4-GPR granularity
> +
> +if G8SR_VGPR_SR_IN_DWX4
> + // the const stride for DWx4 is 4*4 bytes
> + s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4 // const stride to 4*4 bytes
> +
> + s_mov_b32 m0, 4 // skip first 4 VGPRs
> + s_cmp_lt_u32 m0, s_save_alloc_size
> + s_cbranch_scc0 L_SAVE_VGPR_LOOP_END // no more vgprs
> +
> + s_set_gpr_idx_on m0, 0x1 // This will change M0
> + s_add_u32 s_save_alloc_size, s_save_alloc_size, 0x1000 // because above inst change m0
> +L_SAVE_VGPR_LOOP:
> + v_mov_b32 v0, v0 // v0 = v[0+m0]
> + v_mov_b32 v1, v1
> + v_mov_b32 v2, v2
> + v_mov_b32 v3, v3
> +
> +
> + buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
> + s_add_u32 m0, m0, 4
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, 256*4
> + s_cmp_lt_u32 m0, s_save_alloc_size
> + s_cbranch_scc1 L_SAVE_VGPR_LOOP //VGPR save is complete?
> + s_set_gpr_idx_off
> +L_SAVE_VGPR_LOOP_END:
> +
> + s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE // reset const stride to 4 bytes
> +else
> + // VGPR store using dw burst
> + s_mov_b32 m0, 0x4 //VGPR initial index value =0
> + s_cmp_lt_u32 m0, s_save_alloc_size
> + s_cbranch_scc0 L_SAVE_VGPR_END
> +
> +
> + s_set_gpr_idx_on m0, 0x1 //M0[7:0] = M0[7:0] and M0[15:12] = 0x1
> + s_add_u32 s_save_alloc_size, s_save_alloc_size, 0x1000 //add 0x1000 since we compare m0 against it later
> +
> + L_SAVE_VGPR_LOOP:
> + v_mov_b32 v0, v0 //v0 = v[0+m0]
> + v_mov_b32 v1, v1 //v0 = v[0+m0]
> + v_mov_b32 v2, v2 //v0 = v[0+m0]
> + v_mov_b32 v3, v3 //v0 = v[0+m0]
> +
> + if(USE_MTBUF_INSTEAD_OF_MUBUF)
> + tbuffer_store_format_x v0, v0, s_save_buf_rsrc0, s_save_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
> + else
> + buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
> + buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256
> + buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*2
> + buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*3
> + end
> +
> + s_add_u32 m0, m0, 4 //next vgpr index
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, 256*4 //every buffer_store_dword does 256 bytes
> + s_cmp_lt_u32 m0, s_save_alloc_size //scc = (m0 < s_save_alloc_size) ? 1 : 0
> + s_cbranch_scc1 L_SAVE_VGPR_LOOP //VGPR save is complete?
> + s_set_gpr_idx_off
> +end
> +
> +L_SAVE_VGPR_END:
> +
> +
> +
> +
> +
> +
> + /* S_PGM_END_SAVED */ //FIXME graphics ONLY
> + if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_NORMAL_EXIT))
> + s_and_b32 s_save_pc_hi, s_save_pc_hi, 0x0000ffff //pc[47:32]
> + s_add_u32 s_save_pc_lo, s_save_pc_lo, 4 //pc[31:0]+4
> + s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0 //carry bit over
> + s_rfe_b64 s_save_pc_lo //Return to the main shader program
> + else
> + end
> +
> +// Save Done timestamp
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_save_d
> + // SGPR SR memory offset : size(VGPR)
> + get_vgpr_size_bytes(s_save_mem_offset)
> + s_add_u32 s_save_mem_offset, s_save_mem_offset, G8SR_DEBUG_TS_SAVE_D_OFFSET
> + s_waitcnt lgkmcnt(0) //FIXME, will cause xnack??
> + // Need reset rsrc2??
> + s_mov_b32 m0, s_save_mem_offset
> + s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + s_buffer_store_dwordx2 s_g8sr_ts_save_d, s_save_buf_rsrc0, m0 glc:1
> +end
> +
> +
> + s_branch L_END_PGM
> +
> +
> +
> +/**************************************************************************/
> +/* restore routine */
> +/**************************************************************************/
> +
> +L_RESTORE:
> + /* Setup Resource Contants */
> + if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
> + //calculate wd_addr using absolute thread id
> + v_readlane_b32 s_restore_tmp, v9, 0
> + s_lshr_b32 s_restore_tmp, s_restore_tmp, 6
> + s_mul_i32 s_restore_tmp, s_restore_tmp, WAVE_SPACE
> + s_add_i32 s_restore_spi_init_lo, s_restore_tmp, WG_BASE_ADDR_LO
> + s_mov_b32 s_restore_spi_init_hi, WG_BASE_ADDR_HI
> + s_and_b32 s_restore_spi_init_hi, s_restore_spi_init_hi, CTX_RESTORE_CONTROL
> + else
> + end
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_restore_s
> + s_waitcnt lgkmcnt(0) //FIXME, will cause xnack??
> + // tma_lo/hi are sgpr 110, 111, which will not used for 112 SGPR allocated case...
> + s_mov_b32 s_restore_pc_lo, s_g8sr_ts_restore_s[0]
> + s_mov_b32 s_restore_pc_hi, s_g8sr_ts_restore_s[1] //backup ts to ttmp0/1, sicne exec will be finally restored..
> +end
> +
> +
> +
> + s_mov_b32 s_restore_buf_rsrc0, s_restore_spi_init_lo //base_addr_lo
> + s_and_b32 s_restore_buf_rsrc1, s_restore_spi_init_hi, 0x0000FFFF //base_addr_hi
> + s_or_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE
> + s_mov_b32 s_restore_buf_rsrc2, 0 //NUM_RECORDS initial value = 0 (in bytes)
> + s_mov_b32 s_restore_buf_rsrc3, S_RESTORE_BUF_RSRC_WORD3_MISC
> + s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_ATC_MASK
> + s_lshr_b32 s_restore_tmp, s_restore_tmp, (S_RESTORE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT) //get ATC bit into position
> + s_or_b32 s_restore_buf_rsrc3, s_restore_buf_rsrc3, s_restore_tmp //or ATC
> + s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_MTYPE_MASK
> + s_lshr_b32 s_restore_tmp, s_restore_tmp, (S_RESTORE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT) //get MTYPE bits into position
> + s_or_b32 s_restore_buf_rsrc3, s_restore_buf_rsrc3, s_restore_tmp //or MTYPE
> +
> + /* global mem offset */
> +// s_mov_b32 s_restore_mem_offset, 0x0 //mem offset initial value = 0
> +
> + /* the first wave in the threadgroup */
> + s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK
> + s_cbranch_scc0 L_RESTORE_VGPR
> +
> + /* restore LDS */
> + //////////////////////////////
> + L_RESTORE_LDS:
> +
> + s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on //be consistent with SAVE although can be moved ahead
> + s_mov_b32 exec_hi, 0xFFFFFFFF
> +
> + s_getreg_b32 s_restore_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) //lds_size
> + s_and_b32 s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF //lds_size is zero?
> + s_cbranch_scc0 L_RESTORE_VGPR //no lds used? jump to L_RESTORE_VGPR
> + s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 6 //LDS size in dwords = lds_size * 64dw
> + s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 2 //LDS size in bytes
> + s_mov_b32 s_restore_buf_rsrc2, s_restore_alloc_size //NUM_RECORDS in bytes
> +
> + // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
> + //
> + get_vgpr_size_bytes(s_restore_mem_offset)
> + get_sgpr_size_bytes(s_restore_tmp)
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, get_hwreg_size_bytes() //FIXME, Check if offset overflow???
> +
> +
> + if (SWIZZLE_EN)
> + s_add_u32 s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> + s_mov_b32 m0, 0x0 //lds_offset initial value = 0
> +
> + L_RESTORE_LDS_LOOP:
> + if (SAVE_LDS)
> + buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 // first 64DW
> + buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 offset:256 // second 64DW
> + end
> + s_add_u32 m0, m0, 256*2 // 128 DW
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*2 //mem offset increased by 128DW
> + s_cmp_lt_u32 m0, s_restore_alloc_size //scc=(m0 < s_restore_alloc_size) ? 1 : 0
> + s_cbranch_scc1 L_RESTORE_LDS_LOOP //LDS restore is complete?
> +
> +
> + /* restore VGPRs */
> + //////////////////////////////
> + L_RESTORE_VGPR:
> + // VGPR SR memory offset : 0
> + s_mov_b32 s_restore_mem_offset, 0x0
> + s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on //be consistent with SAVE although can be moved ahead
> + s_mov_b32 exec_hi, 0xFFFFFFFF
> +
> + s_getreg_b32 s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE) //vpgr_size
> + s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 1
> + s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 2 //Number of VGPRs = (vgpr_size + 1) * 4 (non-zero value)
> + s_lshl_b32 s_restore_buf_rsrc2, s_restore_alloc_size, 8 //NUM_RECORDS in bytes (64 threads*4)
> + if (SWIZZLE_EN)
> + s_add_u32 s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> +if G8SR_VGPR_SR_IN_DWX4
> + get_vgpr_size_bytes(s_restore_mem_offset)
> + s_sub_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4
> +
> + // the const stride for DWx4 is 4*4 bytes
> + s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4 // const stride to 4*4 bytes
> +
> + s_mov_b32 m0, s_restore_alloc_size
> + s_set_gpr_idx_on m0, 0x8 // Note.. This will change m0
> +
> +L_RESTORE_VGPR_LOOP:
> + buffer_load_dwordx4 v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1
> + s_waitcnt vmcnt(0)
> + s_sub_u32 m0, m0, 4
> + v_mov_b32 v0, v0 // v[0+m0] = v0
> + v_mov_b32 v1, v1
> + v_mov_b32 v2, v2
> + v_mov_b32 v3, v3
> + s_sub_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4
> + s_cmp_eq_u32 m0, 0x8000
> + s_cbranch_scc0 L_RESTORE_VGPR_LOOP
> + s_set_gpr_idx_off
> +
> + s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF // reset const stride to 0
> + s_or_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE // const stride to 4*4 bytes
> +
> +else
> + // VGPR load using dw burst
> + s_mov_b32 s_restore_mem_offset_save, s_restore_mem_offset // restore start with v1, v0 will be the last
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4
> + s_mov_b32 m0, 4 //VGPR initial index value = 1
> + s_set_gpr_idx_on m0, 0x8 //M0[7:0] = M0[7:0] and M0[15:12] = 0x8
> + s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 0x8000 //add 0x8000 since we compare m0 against it later
> +
> + L_RESTORE_VGPR_LOOP:
> + if(USE_MTBUF_INSTEAD_OF_MUBUF)
> + tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
> + else
> + buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1
> + buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256
> + buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*2
> + buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*3
> + end
> + s_waitcnt vmcnt(0) //ensure data ready
> + v_mov_b32 v0, v0 //v[0+m0] = v0
> + v_mov_b32 v1, v1
> + v_mov_b32 v2, v2
> + v_mov_b32 v3, v3
> + s_add_u32 m0, m0, 4 //next vgpr index
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4 //every buffer_load_dword does 256 bytes
> + s_cmp_lt_u32 m0, s_restore_alloc_size //scc = (m0 < s_restore_alloc_size) ? 1 : 0
> + s_cbranch_scc1 L_RESTORE_VGPR_LOOP //VGPR restore (except v0) is complete?
> + s_set_gpr_idx_off
> + /* VGPR restore on v0 */
> + if(USE_MTBUF_INSTEAD_OF_MUBUF)
> + tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
> + else
> + buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1
> + buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256
> + buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256*2
> + buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256*3
> + end
> +
> +end
> +
> + /* restore SGPRs */
> + //////////////////////////////
> +
> + // SGPR SR memory offset : size(VGPR)
> + get_vgpr_size_bytes(s_restore_mem_offset)
> + get_sgpr_size_bytes(s_restore_tmp)
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
> + s_sub_u32 s_restore_mem_offset, s_restore_mem_offset, 16*4 // restore SGPR from S[n] to S[0], by 16 sgprs group
> + // TODO, change RSRC word to rearrange memory layout for SGPRS
> +
> + s_getreg_b32 s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE) //spgr_size
> + s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 1
> + s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 4 //Number of SGPRs = (sgpr_size + 1) * 16 (non-zero value)
> +
> + if (SGPR_SAVE_USE_SQC)
> + s_lshl_b32 s_restore_buf_rsrc2, s_restore_alloc_size, 2 //NUM_RECORDS in bytes
> + else
> + s_lshl_b32 s_restore_buf_rsrc2, s_restore_alloc_size, 8 //NUM_RECORDS in bytes (64 threads)
> + end
> + if (SWIZZLE_EN)
> + s_add_u32 s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> + /* If 112 SGPRs ar allocated, 4 sgprs are not used TBA(108,109),TMA(110,111),
> + However, we are safe to restore these 4 SGPRs anyway, since TBA,TMA will later be restored by HWREG
> + */
> + s_mov_b32 m0, s_restore_alloc_size
> +
> + L_RESTORE_SGPR_LOOP:
> + read_16sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset) //PV: further performance improvement can be made
> + s_waitcnt lgkmcnt(0) //ensure data ready
> +
> + s_sub_u32 m0, m0, 16 // Restore from S[n] to S[0]
> +
> + s_movreld_b64 s0, s0 //s[0+m0] = s0
> + s_movreld_b64 s2, s2
> + s_movreld_b64 s4, s4
> + s_movreld_b64 s6, s6
> + s_movreld_b64 s8, s8
> + s_movreld_b64 s10, s10
> + s_movreld_b64 s12, s12
> + s_movreld_b64 s14, s14
> +
> + s_cmp_eq_u32 m0, 0 //scc = (m0 < s_restore_alloc_size) ? 1 : 0
> + s_cbranch_scc0 L_RESTORE_SGPR_LOOP //SGPR restore (except s0) is complete?
> +
> + /* restore HW registers */
> + //////////////////////////////
> + L_RESTORE_HWREG:
> +
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_mov_b32 s_g8sr_ts_restore_s[0], s_restore_pc_lo
> + s_mov_b32 s_g8sr_ts_restore_s[1], s_restore_pc_hi
> +end
> +
> + // HWREG SR memory offset : size(VGPR)+size(SGPR)
> + get_vgpr_size_bytes(s_restore_mem_offset)
> + get_sgpr_size_bytes(s_restore_tmp)
> + s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
> +
> +
> + s_mov_b32 s_restore_buf_rsrc2, 0x4 //NUM_RECORDS in bytes
> + if (SWIZZLE_EN)
> + s_add_u32 s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0 //FIXME need to use swizzle to enable bounds checking?
> + else
> + s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes
> + end
> +
> + read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset) //M0
> + read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //PC
> + read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
> + read_hwreg_from_mem(s_restore_exec_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //EXEC
> + read_hwreg_from_mem(s_restore_exec_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
> + read_hwreg_from_mem(s_restore_status, s_restore_buf_rsrc0, s_restore_mem_offset) //STATUS
> + read_hwreg_from_mem(s_restore_trapsts, s_restore_buf_rsrc0, s_restore_mem_offset) //TRAPSTS
> + read_hwreg_from_mem(xnack_mask_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //XNACK_MASK_LO
> + read_hwreg_from_mem(xnack_mask_hi, s_restore_buf_rsrc0, s_restore_mem_offset) //XNACK_MASK_HI
> + read_hwreg_from_mem(s_restore_mode, s_restore_buf_rsrc0, s_restore_mem_offset) //MODE
> + read_hwreg_from_mem(tba_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //TBA_LO
> + read_hwreg_from_mem(tba_hi, s_restore_buf_rsrc0, s_restore_mem_offset) //TBA_HI
> +
> + s_waitcnt lgkmcnt(0) //from now on, it is safe to restore STATUS and IB_STS
> +
> + s_and_b32 s_restore_pc_hi, s_restore_pc_hi, 0x0000ffff //pc[47:32] //Do it here in order not to affect STATUS
> +
> + //for normal save & restore, the saved PC points to the next inst to execute, no adjustment needs to be made, otherwise:
> + if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
> + s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 8 //pc[31:0]+8 //two back-to-back s_trap are used (first for save and second for restore)
> + s_addc_u32 s_restore_pc_hi, s_restore_pc_hi, 0x0 //carry bit over
> + end
> + if ((EMU_RUN_HACK) && (EMU_RUN_HACK_RESTORE_NORMAL))
> + s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 4 //pc[31:0]+4 // save is hack through s_trap but restore is normal
> + s_addc_u32 s_restore_pc_hi, s_restore_pc_hi, 0x0 //carry bit over
> + end
> +
> + s_mov_b32 m0, s_restore_m0
> + s_mov_b32 exec_lo, s_restore_exec_lo
> + s_mov_b32 exec_hi, s_restore_exec_hi
> +
> + s_and_b32 s_restore_m0, SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK, s_restore_trapsts
> + s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE), s_restore_m0
> + s_and_b32 s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK, s_restore_trapsts
> + s_lshr_b32 s_restore_m0, s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT
> + s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE), s_restore_m0
> + //s_setreg_b32 hwreg(HW_REG_TRAPSTS), s_restore_trapsts //don't overwrite SAVECTX bit as it may be set through external SAVECTX during restore
> + s_setreg_b32 hwreg(HW_REG_MODE), s_restore_mode
> + //reuse s_restore_m0 as a temp register
> + s_and_b32 s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_RCNT_MASK
> + s_lshr_b32 s_restore_m0, s_restore_m0, S_SAVE_PC_HI_RCNT_SHIFT
> + s_lshl_b32 s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_RCNT_SHIFT
> + s_mov_b32 s_restore_tmp, 0x0 //IB_STS is zero
> + s_or_b32 s_restore_tmp, s_restore_tmp, s_restore_m0
> + s_and_b32 s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_FIRST_REPLAY_MASK
> + s_lshr_b32 s_restore_m0, s_restore_m0, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
> + s_lshl_b32 s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT
> + s_or_b32 s_restore_tmp, s_restore_tmp, s_restore_m0
> + s_and_b32 s_restore_m0, s_restore_status, SQ_WAVE_STATUS_INST_ATC_MASK
> + s_lshr_b32 s_restore_m0, s_restore_m0, SQ_WAVE_STATUS_INST_ATC_SHIFT
> + s_setreg_b32 hwreg(HW_REG_IB_STS), s_restore_tmp
> +
> + s_and_b64 exec, exec, exec // Restore STATUS.EXECZ, not writable by s_setreg_b32
> + s_and_b64 vcc, vcc, vcc // Restore STATUS.VCCZ, not writable by s_setreg_b32
> + s_setreg_b32 hwreg(HW_REG_STATUS), s_restore_status // SCC is included, which is changed by previous salu
> +
> + s_barrier //barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG //FIXME not performance-optimal at this time
> +
> +if G8SR_DEBUG_TIMESTAMP
> + s_memrealtime s_g8sr_ts_restore_d
> + s_waitcnt lgkmcnt(0)
> +end
> +
> +// s_rfe_b64 s_restore_pc_lo //Return to the main shader program and resume execution
> + s_rfe_restore_b64 s_restore_pc_lo, s_restore_m0 // s_restore_m0[0] is used to set STATUS.inst_atc
> +
> +
> +/**************************************************************************/
> +/* the END */
> +/**************************************************************************/
> +L_END_PGM:
> + s_endpgm
> +
> +end
> +
> +
> +/**************************************************************************/
> +/* the helper functions */
> +/**************************************************************************/
> +
> +//Only for save hwreg to mem
> +function write_hwreg_to_mem(s, s_rsrc, s_mem_offset)
> + s_mov_b32 exec_lo, m0 //assuming exec_lo is not needed anymore from this point on
> + s_mov_b32 m0, s_mem_offset
> + s_buffer_store_dword s, s_rsrc, m0 glc:1
> + s_add_u32 s_mem_offset, s_mem_offset, 4
> + s_mov_b32 m0, exec_lo
> +end
> +
> +
> +// HWREG are saved before SGPRs, so all HWREG could be use.
> +function write_16sgpr_to_mem(s, s_rsrc, s_mem_offset)
> +
> + s_buffer_store_dwordx4 s[0], s_rsrc, 0 glc:1
> + s_buffer_store_dwordx4 s[4], s_rsrc, 16 glc:1
> + s_buffer_store_dwordx4 s[8], s_rsrc, 32 glc:1
> + s_buffer_store_dwordx4 s[12], s_rsrc, 48 glc:1
> + s_add_u32 s_rsrc[0], s_rsrc[0], 4*16
> + s_addc_u32 s_rsrc[1], s_rsrc[1], 0x0 // +scc
> +end
> +
> +
> +function read_hwreg_from_mem(s, s_rsrc, s_mem_offset)
> + s_buffer_load_dword s, s_rsrc, s_mem_offset glc:1
> + s_add_u32 s_mem_offset, s_mem_offset, 4
> +end
> +
> +function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset)
> + s_buffer_load_dwordx16 s, s_rsrc, s_mem_offset glc:1
> + s_sub_u32 s_mem_offset, s_mem_offset, 4*16
> +end
> +
> +
> +
> +function get_lds_size_bytes(s_lds_size_byte)
> + // SQ LDS granularity is 64DW, while PGM_RSRC2.lds_size is in granularity 128DW
> + s_getreg_b32 s_lds_size_byte, hwreg(HW_REG_LDS_ALLOC, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) // lds_size
> + s_lshl_b32 s_lds_size_byte, s_lds_size_byte, 8 //LDS size in dwords = lds_size * 64 *4Bytes // granularity 64DW
> +end
> +
> +function get_vgpr_size_bytes(s_vgpr_size_byte)
> + s_getreg_b32 s_vgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE) //vpgr_size
> + s_add_u32 s_vgpr_size_byte, s_vgpr_size_byte, 1
> + s_lshl_b32 s_vgpr_size_byte, s_vgpr_size_byte, (2+8) //Number of VGPRs = (vgpr_size + 1) * 4 * 64 * 4 (non-zero value) //FIXME for GFX, zero is possible
> +end
> +
> +function get_sgpr_size_bytes(s_sgpr_size_byte)
> + s_getreg_b32 s_sgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE) //spgr_size
> + s_add_u32 s_sgpr_size_byte, s_sgpr_size_byte, 1
> + s_lshl_b32 s_sgpr_size_byte, s_sgpr_size_byte, 6 //Number of SGPRs = (sgpr_size + 1) * 16 *4 (non-zero value)
> +end
> +
> +function get_hwreg_size_bytes
> + return 128 //HWREG size 128 bytes
> +end
> +
> +
> +#endif
> +
> +static const uint32_t cwsr_trap_gfx8_hex[] = {
> + 0xbf820001, 0xbf820123,
> + 0xb8f4f802, 0x89748674,
> + 0xb8f5f803, 0x8675ff75,
> + 0x00000400, 0xbf850011,
> + 0xc00a1e37, 0x00000000,
> + 0xbf8c007f, 0x87777978,
> + 0xbf840002, 0xb974f802,
> + 0xbe801d78, 0xb8f5f803,
> + 0x8675ff75, 0x000001ff,
> + 0xbf850002, 0x80708470,
> + 0x82718071, 0x8671ff71,
> + 0x0000ffff, 0xb974f802,
> + 0xbe801f70, 0xb8f5f803,
> + 0x8675ff75, 0x00000100,
> + 0xbf840006, 0xbefa0080,
> + 0xb97a0203, 0x8671ff71,
> + 0x0000ffff, 0x80f08870,
> + 0x82f18071, 0xbefa0080,
> + 0xb97a0283, 0xbef60068,
> + 0xbef70069, 0xb8fa1c07,
> + 0x8e7a9c7a, 0x87717a71,
> + 0xb8fa03c7, 0x8e7a9b7a,
> + 0x87717a71, 0xb8faf807,
> + 0x867aff7a, 0x00007fff,
> + 0xb97af807, 0xbef2007e,
> + 0xbef3007f, 0xbefe0180,
> + 0xbf900004, 0xbf8e0002,
> + 0xbf88fffe, 0xbef8007e,
> + 0x8679ff7f, 0x0000ffff,
> + 0x8779ff79, 0x00040000,
> + 0xbefa0080, 0xbefb00ff,
> + 0x00807fac, 0x867aff7f,
> + 0x08000000, 0x8f7a837a,
> + 0x877b7a7b, 0x867aff7f,
> + 0x70000000, 0x8f7a817a,
> + 0x877b7a7b, 0xbeef007c,
> + 0xbeee0080, 0xb8ee2a05,
> + 0x806e816e, 0x8e6e8a6e,
> + 0xb8fa1605, 0x807a817a,
> + 0x8e7a867a, 0x806e7a6e,
> + 0xbefa0084, 0xbefa00ff,
> + 0x01000000, 0xbefe007c,
> + 0xbefc006e, 0xc0611bfc,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611c3c,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611c7c,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611cbc,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611cfc,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611d3c,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xb8f5f803,
> + 0xbefe007c, 0xbefc006e,
> + 0xc0611d7c, 0x0000007c,
> + 0x806e846e, 0xbefc007e,
> + 0xbefe007c, 0xbefc006e,
> + 0xc0611dbc, 0x0000007c,
> + 0x806e846e, 0xbefc007e,
> + 0xbefe007c, 0xbefc006e,
> + 0xc0611dfc, 0x0000007c,
> + 0x806e846e, 0xbefc007e,
> + 0xb8eff801, 0xbefe007c,
> + 0xbefc006e, 0xc0611bfc,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611b3c,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0xbefe007c,
> + 0xbefc006e, 0xc0611b7c,
> + 0x0000007c, 0x806e846e,
> + 0xbefc007e, 0x867aff7f,
> + 0x04000000, 0xbef30080,
> + 0x8773737a, 0xb8ee2a05,
> + 0x806e816e, 0x8e6e8a6e,
> + 0xb8f51605, 0x80758175,
> + 0x8e758475, 0x8e7a8275,
> + 0xbefa00ff, 0x01000000,
> + 0xbef60178, 0x80786e78,
> + 0x82798079, 0xbefc0080,
> + 0xbe802b00, 0xbe822b02,
> + 0xbe842b04, 0xbe862b06,
> + 0xbe882b08, 0xbe8a2b0a,
> + 0xbe8c2b0c, 0xbe8e2b0e,
> + 0xc06b003c, 0x00000000,
> + 0xc06b013c, 0x00000010,
> + 0xc06b023c, 0x00000020,
> + 0xc06b033c, 0x00000030,
> + 0x8078c078, 0x82798079,
> + 0x807c907c, 0xbf0a757c,
> + 0xbf85ffeb, 0xbef80176,
> + 0xbeee0080, 0xbefe00c1,
> + 0xbeff00c1, 0xbefa00ff,
> + 0x01000000, 0xe0724000,
> + 0x6e1e0000, 0xe0724100,
> + 0x6e1e0100, 0xe0724200,
> + 0x6e1e0200, 0xe0724300,
> + 0x6e1e0300, 0xbefe00c1,
> + 0xbeff00c1, 0xb8f54306,
> + 0x8675c175, 0xbf84002c,
> + 0xbf8a0000, 0x867aff73,
> + 0x04000000, 0xbf840028,
> + 0x8e758675, 0x8e758275,
> + 0xbefa0075, 0xb8ee2a05,
> + 0x806e816e, 0x8e6e8a6e,
> + 0xb8fa1605, 0x807a817a,
> + 0x8e7a867a, 0x806e7a6e,
> + 0x806eff6e, 0x00000080,
> + 0xbefa00ff, 0x01000000,
> + 0xbefc0080, 0xd28c0002,
> + 0x000100c1, 0xd28d0003,
> + 0x000204c1, 0xd1060002,
> + 0x00011103, 0x7e0602ff,
> + 0x00000200, 0xbefc00ff,
> + 0x00010000, 0xbe80007b,
> + 0x867bff7b, 0xff7fffff,
> + 0x877bff7b, 0x00058000,
> + 0xd8ec0000, 0x00000002,
> + 0xbf8c007f, 0xe0765000,
> + 0x6e1e0002, 0x32040702,
> + 0xd0c9006a, 0x0000eb02,
> + 0xbf87fff7, 0xbefb0000,
> + 0xbeee00ff, 0x00000400,
> + 0xbefe00c1, 0xbeff00c1,
> + 0xb8f52a05, 0x80758175,
> + 0x8e758275, 0x8e7a8875,
> + 0xbefa00ff, 0x01000000,
> + 0xbefc0084, 0xbf0a757c,
> + 0xbf840015, 0xbf11017c,
> + 0x8075ff75, 0x00001000,
> + 0x7e000300, 0x7e020301,
> + 0x7e040302, 0x7e060303,
> + 0xe0724000, 0x6e1e0000,
> + 0xe0724100, 0x6e1e0100,
> + 0xe0724200, 0x6e1e0200,
> + 0xe0724300, 0x6e1e0300,
> + 0x807c847c, 0x806eff6e,
> + 0x00000400, 0xbf0a757c,
> + 0xbf85ffef, 0xbf9c0000,
> + 0xbf8200ca, 0xbef8007e,
> + 0x8679ff7f, 0x0000ffff,
> + 0x8779ff79, 0x00040000,
> + 0xbefa0080, 0xbefb00ff,
> + 0x00807fac, 0x8676ff7f,
> + 0x08000000, 0x8f768376,
> + 0x877b767b, 0x8676ff7f,
> + 0x70000000, 0x8f768176,
> + 0x877b767b, 0x8676ff7f,
> + 0x04000000, 0xbf84001e,
> + 0xbefe00c1, 0xbeff00c1,
> + 0xb8f34306, 0x8673c173,
> + 0xbf840019, 0x8e738673,
> + 0x8e738273, 0xbefa0073,
> + 0xb8f22a05, 0x80728172,
> + 0x8e728a72, 0xb8f61605,
> + 0x80768176, 0x8e768676,
> + 0x80727672, 0x8072ff72,
> + 0x00000080, 0xbefa00ff,
> + 0x01000000, 0xbefc0080,
> + 0xe0510000, 0x721e0000,
> + 0xe0510100, 0x721e0000,
> + 0x807cff7c, 0x00000200,
> + 0x8072ff72, 0x00000200,
> + 0xbf0a737c, 0xbf85fff6,
> + 0xbef20080, 0xbefe00c1,
> + 0xbeff00c1, 0xb8f32a05,
> + 0x80738173, 0x8e738273,
> + 0x8e7a8873, 0xbefa00ff,
> + 0x01000000, 0xbef60072,
> + 0x8072ff72, 0x00000400,
> + 0xbefc0084, 0xbf11087c,
> + 0x8073ff73, 0x00008000,
> + 0xe0524000, 0x721e0000,
> + 0xe0524100, 0x721e0100,
> + 0xe0524200, 0x721e0200,
> + 0xe0524300, 0x721e0300,
> + 0xbf8c0f70, 0x7e000300,
> + 0x7e020301, 0x7e040302,
> + 0x7e060303, 0x807c847c,
> + 0x8072ff72, 0x00000400,
> + 0xbf0a737c, 0xbf85ffee,
> + 0xbf9c0000, 0xe0524000,
> + 0x761e0000, 0xe0524100,
> + 0x761e0100, 0xe0524200,
> + 0x761e0200, 0xe0524300,
> + 0x761e0300, 0xb8f22a05,
> + 0x80728172, 0x8e728a72,
> + 0xb8f61605, 0x80768176,
> + 0x8e768676, 0x80727672,
> + 0x80f2c072, 0xb8f31605,
> + 0x80738173, 0x8e738473,
> + 0x8e7a8273, 0xbefa00ff,
> + 0x01000000, 0xbefc0073,
> + 0xc031003c, 0x00000072,
> + 0x80f2c072, 0xbf8c007f,
> + 0x80fc907c, 0xbe802d00,
> + 0xbe822d02, 0xbe842d04,
> + 0xbe862d06, 0xbe882d08,
> + 0xbe8a2d0a, 0xbe8c2d0c,
> + 0xbe8e2d0e, 0xbf06807c,
> + 0xbf84fff1, 0xb8f22a05,
> + 0x80728172, 0x8e728a72,
> + 0xb8f61605, 0x80768176,
> + 0x8e768676, 0x80727672,
> + 0xbefa0084, 0xbefa00ff,
> + 0x01000000, 0xc0211cfc,
> + 0x00000072, 0x80728472,
> + 0xc0211c3c, 0x00000072,
> + 0x80728472, 0xc0211c7c,
> + 0x00000072, 0x80728472,
> + 0xc0211bbc, 0x00000072,
> + 0x80728472, 0xc0211bfc,
> + 0x00000072, 0x80728472,
> + 0xc0211d3c, 0x00000072,
> + 0x80728472, 0xc0211d7c,
> + 0x00000072, 0x80728472,
> + 0xc0211a3c, 0x00000072,
> + 0x80728472, 0xc0211a7c,
> + 0x00000072, 0x80728472,
> + 0xc0211dfc, 0x00000072,
> + 0x80728472, 0xc0211b3c,
> + 0x00000072, 0x80728472,
> + 0xc0211b7c, 0x00000072,
> + 0x80728472, 0xbf8c007f,
> + 0x8671ff71, 0x0000ffff,
> + 0xbefc0073, 0xbefe006e,
> + 0xbeff006f, 0x867375ff,
> + 0x000003ff, 0xb9734803,
> + 0x867375ff, 0xfffff800,
> + 0x8f738b73, 0xb973a2c3,
> + 0xb977f801, 0x8673ff71,
> + 0xf0000000, 0x8f739c73,
> + 0x8e739073, 0xbef60080,
> + 0x87767376, 0x8673ff71,
> + 0x08000000, 0x8f739b73,
> + 0x8e738f73, 0x87767376,
> + 0x8673ff74, 0x00800000,
> + 0x8f739773, 0xb976f807,
> + 0x86fe7e7e, 0x86ea6a6a,
> + 0xb974f802, 0xbf8a0000,
> + 0x95807370, 0xbf810000,
> +};
> +
> --
> 2.7.4
>
This patch is:
Acked-by: Oded Gabbay <oded.gabbay at gmail.com>
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