1 /* 2 * Copyright 2015-2017 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23 /* To compile this assembly code: 24 * PROJECT=vi ./sp3 cwsr_trap_handler_gfx8.asm -hex tmp.hex 25 */ 26 27 /**************************************************************************/ 28 /* variables */ 29 /**************************************************************************/ 30 var SQ_WAVE_STATUS_INST_ATC_SHIFT = 23 31 var SQ_WAVE_STATUS_INST_ATC_MASK = 0x00800000 32 var SQ_WAVE_STATUS_SPI_PRIO_SHIFT = 1 33 var SQ_WAVE_STATUS_SPI_PRIO_MASK = 0x00000006 34 var SQ_WAVE_STATUS_PRE_SPI_PRIO_SHIFT = 0 35 var SQ_WAVE_STATUS_PRE_SPI_PRIO_SIZE = 1 36 var SQ_WAVE_STATUS_POST_SPI_PRIO_SHIFT = 3 37 var SQ_WAVE_STATUS_POST_SPI_PRIO_SIZE = 29 38 39 var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT = 12 40 var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE = 9 41 var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT = 8 42 var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE = 6 43 var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT = 24 44 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 45 46 var SQ_WAVE_TRAPSTS_SAVECTX_MASK = 0x400 47 var SQ_WAVE_TRAPSTS_EXCE_MASK = 0x1FF // Exception mask 48 var SQ_WAVE_TRAPSTS_SAVECTX_SHIFT = 10 49 var SQ_WAVE_TRAPSTS_MEM_VIOL_MASK = 0x100 50 var SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT = 8 51 var SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK = 0x3FF 52 var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT = 0x0 53 var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE = 10 54 var SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK = 0xFFFFF800 55 var SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT = 11 56 var SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE = 21 57 58 var SQ_WAVE_IB_STS_RCNT_SHIFT = 16 //FIXME 59 var SQ_WAVE_IB_STS_RCNT_SIZE = 4 //FIXME 60 var SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT = 15 //FIXME 61 var SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE = 1 //FIXME 62 var SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG = 0x00007FFF //FIXME 63 64 var SQ_BUF_RSRC_WORD1_ATC_SHIFT = 24 65 var SQ_BUF_RSRC_WORD3_MTYPE_SHIFT = 27 66 67 68 /* Save */ 69 var S_SAVE_BUF_RSRC_WORD1_STRIDE = 0x00040000 //stride is 4 bytes 70 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 71 72 var S_SAVE_SPI_INIT_ATC_MASK = 0x08000000 //bit[27]: ATC bit 73 var S_SAVE_SPI_INIT_ATC_SHIFT = 27 74 var S_SAVE_SPI_INIT_MTYPE_MASK = 0x70000000 //bit[30:28]: Mtype 75 var S_SAVE_SPI_INIT_MTYPE_SHIFT = 28 76 var S_SAVE_SPI_INIT_FIRST_WAVE_MASK = 0x04000000 //bit[26]: FirstWaveInTG 77 var S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT = 26 78 79 var S_SAVE_PC_HI_RCNT_SHIFT = 28 //FIXME check with Brian to ensure all fields other than PC[47:0] can be used 80 var S_SAVE_PC_HI_RCNT_MASK = 0xF0000000 //FIXME 81 var S_SAVE_PC_HI_FIRST_REPLAY_SHIFT = 27 //FIXME 82 var S_SAVE_PC_HI_FIRST_REPLAY_MASK = 0x08000000 //FIXME 83 84 var s_save_spi_init_lo = exec_lo 85 var s_save_spi_init_hi = exec_hi 86 87 //tba_lo and tba_hi need to be saved/restored 88 var s_save_pc_lo = ttmp0 //{TTMP1, TTMP0} = {3'h0,pc_rewind[3:0], HT[0],trapID[7:0], PC[47:0]} 89 var s_save_pc_hi = ttmp1 90 var s_save_exec_lo = ttmp2 91 var s_save_exec_hi = ttmp3 92 var s_save_status = ttmp4 93 var s_save_trapsts = ttmp5 //not really used until the end of the SAVE routine 94 var s_save_xnack_mask_lo = ttmp6 95 var s_save_xnack_mask_hi = ttmp7 96 var s_save_buf_rsrc0 = ttmp8 97 var s_save_buf_rsrc1 = ttmp9 98 var s_save_buf_rsrc2 = ttmp10 99 var s_save_buf_rsrc3 = ttmp11 100 101 var s_save_mem_offset = tma_lo 102 var s_save_alloc_size = s_save_trapsts //conflict 103 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) 104 var s_save_m0 = tma_hi 105 106 /* Restore */ 107 var S_RESTORE_BUF_RSRC_WORD1_STRIDE = S_SAVE_BUF_RSRC_WORD1_STRIDE 108 var S_RESTORE_BUF_RSRC_WORD3_MISC = S_SAVE_BUF_RSRC_WORD3_MISC 109 110 var S_RESTORE_SPI_INIT_ATC_MASK = 0x08000000 //bit[27]: ATC bit 111 var S_RESTORE_SPI_INIT_ATC_SHIFT = 27 112 var S_RESTORE_SPI_INIT_MTYPE_MASK = 0x70000000 //bit[30:28]: Mtype 113 var S_RESTORE_SPI_INIT_MTYPE_SHIFT = 28 114 var S_RESTORE_SPI_INIT_FIRST_WAVE_MASK = 0x04000000 //bit[26]: FirstWaveInTG 115 var S_RESTORE_SPI_INIT_FIRST_WAVE_SHIFT = 26 116 117 var S_RESTORE_PC_HI_RCNT_SHIFT = S_SAVE_PC_HI_RCNT_SHIFT 118 var S_RESTORE_PC_HI_RCNT_MASK = S_SAVE_PC_HI_RCNT_MASK 119 var S_RESTORE_PC_HI_FIRST_REPLAY_SHIFT = S_SAVE_PC_HI_FIRST_REPLAY_SHIFT 120 var S_RESTORE_PC_HI_FIRST_REPLAY_MASK = S_SAVE_PC_HI_FIRST_REPLAY_MASK 121 122 var s_restore_spi_init_lo = exec_lo 123 var s_restore_spi_init_hi = exec_hi 124 125 var s_restore_mem_offset = ttmp2 126 var s_restore_alloc_size = ttmp3 127 var s_restore_tmp = ttmp6 //tba_lo/hi need to be restored 128 var s_restore_mem_offset_save = s_restore_tmp //no conflict 129 130 var s_restore_m0 = s_restore_alloc_size //no conflict 131 132 var s_restore_mode = ttmp7 133 134 var s_restore_pc_lo = ttmp0 135 var s_restore_pc_hi = ttmp1 136 var s_restore_exec_lo = tma_lo //no conflict 137 var s_restore_exec_hi = tma_hi //no conflict 138 var s_restore_status = ttmp4 139 var s_restore_trapsts = ttmp5 140 var s_restore_xnack_mask_lo = xnack_mask_lo 141 var s_restore_xnack_mask_hi = xnack_mask_hi 142 var s_restore_buf_rsrc0 = ttmp8 143 var s_restore_buf_rsrc1 = ttmp9 144 var s_restore_buf_rsrc2 = ttmp10 145 var s_restore_buf_rsrc3 = ttmp11 146 147 /**************************************************************************/ 148 /* trap handler entry points */ 149 /**************************************************************************/ 150 /* Shader Main*/ 151 152 shader main 153 asic(VI) 154 type(CS) 155 156 157 s_branch L_SKIP_RESTORE //NOT restore. might be a regular trap or save 158 159 L_JUMP_TO_RESTORE: 160 s_branch L_RESTORE //restore 161 162 L_SKIP_RESTORE: 163 164 s_getreg_b32 s_save_status, hwreg(HW_REG_STATUS) //save STATUS since we will change SCC 165 s_andn2_b32 s_save_status, s_save_status, SQ_WAVE_STATUS_SPI_PRIO_MASK //check whether this is for save 166 s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS) 167 s_and_b32 s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_SAVECTX_MASK //check whether this is for save 168 s_cbranch_scc1 L_SAVE //this is the operation for save 169 170 // ********* Handle non-CWSR traps ******************* 171 172 /* read tba and tma for next level trap handler, ttmp4 is used as s_save_status */ 173 s_load_dwordx4 [ttmp8,ttmp9,ttmp10, ttmp11], [tma_lo,tma_hi], 0 174 s_waitcnt lgkmcnt(0) 175 s_or_b32 ttmp7, ttmp8, ttmp9 176 s_cbranch_scc0 L_NO_NEXT_TRAP //next level trap handler not been set 177 set_status_without_spi_prio(s_save_status, ttmp2) //restore HW status(SCC) 178 s_setpc_b64 [ttmp8,ttmp9] //jump to next level trap handler 179 180 L_NO_NEXT_TRAP: 181 s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS) 182 s_and_b32 s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_EXCE_MASK // Check whether it is an exception 183 s_cbranch_scc1 L_EXCP_CASE // Exception, jump back to the shader program directly. 184 s_add_u32 ttmp0, ttmp0, 4 // S_TRAP case, add 4 to ttmp0 185 s_addc_u32 ttmp1, ttmp1, 0 186 L_EXCP_CASE: 187 s_and_b32 ttmp1, ttmp1, 0xFFFF 188 set_status_without_spi_prio(s_save_status, ttmp2) //restore HW status(SCC) 189 s_rfe_b64 [ttmp0, ttmp1] 190 191 // ********* End handling of non-CWSR traps ******************* 192 193 /**************************************************************************/ 194 /* save routine */ 195 /**************************************************************************/ 196 197 L_SAVE: 198 s_mov_b32 s_save_tmp, 0 //clear saveCtx bit 199 s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_SAVECTX_SHIFT, 1), s_save_tmp //clear saveCtx bit 200 201 s_mov_b32 s_save_xnack_mask_lo, xnack_mask_lo //save XNACK_MASK 202 s_mov_b32 s_save_xnack_mask_hi, xnack_mask_hi //save XNACK must before any memory operation 203 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 204 s_lshl_b32 s_save_tmp, s_save_tmp, S_SAVE_PC_HI_RCNT_SHIFT 205 s_or_b32 s_save_pc_hi, s_save_pc_hi, s_save_tmp 206 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 207 s_lshl_b32 s_save_tmp, s_save_tmp, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT 208 s_or_b32 s_save_pc_hi, s_save_pc_hi, s_save_tmp 209 s_getreg_b32 s_save_tmp, hwreg(HW_REG_IB_STS) //clear RCNT and FIRST_REPLAY in IB_STS 210 s_and_b32 s_save_tmp, s_save_tmp, SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG 211 212 s_setreg_b32 hwreg(HW_REG_IB_STS), s_save_tmp 213 214 /* inform SPI the readiness and wait for SPI's go signal */ 215 s_mov_b32 s_save_exec_lo, exec_lo //save EXEC and use EXEC for the go signal from SPI 216 s_mov_b32 s_save_exec_hi, exec_hi 217 s_mov_b64 exec, 0x0 //clear EXEC to get ready to receive 218 219 s_sendmsg sendmsg(MSG_SAVEWAVE) //send SPI a message and wait for SPI's write to EXEC 220 221 // Set SPI_PRIO=2 to avoid starving instruction fetch in the waves we're waiting for. 222 s_or_b32 s_save_tmp, s_save_status, (2 << SQ_WAVE_STATUS_SPI_PRIO_SHIFT) 223 s_setreg_b32 hwreg(HW_REG_STATUS), s_save_tmp 224 225 L_SLEEP: 226 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!=0 227 228 s_cbranch_execz L_SLEEP 229 230 /* setup Resource Contants */ 231 s_mov_b32 s_save_buf_rsrc0, s_save_spi_init_lo //base_addr_lo 232 s_and_b32 s_save_buf_rsrc1, s_save_spi_init_hi, 0x0000FFFF //base_addr_hi 233 s_or_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE 234 s_mov_b32 s_save_buf_rsrc2, 0 //NUM_RECORDS initial value = 0 (in bytes) although not neccessarily inited 235 s_mov_b32 s_save_buf_rsrc3, S_SAVE_BUF_RSRC_WORD3_MISC 236 s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_ATC_MASK 237 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 238 s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, s_save_tmp //or ATC 239 s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_MTYPE_MASK 240 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 241 s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, s_save_tmp //or MTYPE 242 243 //FIXME right now s_save_m0/s_save_mem_offset use tma_lo/tma_hi (might need to save them before using them?) 244 s_mov_b32 s_save_m0, m0 //save M0 245 246 /* global mem offset */ 247 s_mov_b32 s_save_mem_offset, 0x0 //mem offset initial value = 0 248 249 250 251 252 /* save HW registers */ 253 ////////////////////////////// 254 255 L_SAVE_HWREG: 256 // HWREG SR memory offset : size(VGPR)+size(SGPR) 257 get_vgpr_size_bytes(s_save_mem_offset) 258 get_sgpr_size_bytes(s_save_tmp) 259 s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp 260 261 262 s_mov_b32 s_save_buf_rsrc2, 0x4 //NUM_RECORDS in bytes 263 s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 264 265 266 write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset) //M0 267 write_hwreg_to_mem(s_save_pc_lo, s_save_buf_rsrc0, s_save_mem_offset) //PC 268 write_hwreg_to_mem(s_save_pc_hi, s_save_buf_rsrc0, s_save_mem_offset) 269 write_hwreg_to_mem(s_save_exec_lo, s_save_buf_rsrc0, s_save_mem_offset) //EXEC 270 write_hwreg_to_mem(s_save_exec_hi, s_save_buf_rsrc0, s_save_mem_offset) 271 write_hwreg_to_mem(s_save_status, s_save_buf_rsrc0, s_save_mem_offset) //STATUS 272 273 //s_save_trapsts conflicts with s_save_alloc_size 274 s_getreg_b32 s_save_trapsts, hwreg(HW_REG_TRAPSTS) 275 write_hwreg_to_mem(s_save_trapsts, s_save_buf_rsrc0, s_save_mem_offset) //TRAPSTS 276 277 write_hwreg_to_mem(s_save_xnack_mask_lo, s_save_buf_rsrc0, s_save_mem_offset) //XNACK_MASK_LO 278 write_hwreg_to_mem(s_save_xnack_mask_hi, s_save_buf_rsrc0, s_save_mem_offset) //XNACK_MASK_HI 279 280 //use s_save_tmp would introduce conflict here between s_save_tmp and s_save_buf_rsrc2 281 s_getreg_b32 s_save_m0, hwreg(HW_REG_MODE) //MODE 282 write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset) 283 write_hwreg_to_mem(tba_lo, s_save_buf_rsrc0, s_save_mem_offset) //TBA_LO 284 write_hwreg_to_mem(tba_hi, s_save_buf_rsrc0, s_save_mem_offset) //TBA_HI 285 286 287 288 /* the first wave in the threadgroup */ 289 // save fist_wave bits in tba_hi unused bit.26 290 s_and_b32 s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK // extract fisrt wave bit 291 //s_or_b32 tba_hi, s_save_tmp, tba_hi // save first wave bit to tba_hi.bits[26] 292 s_mov_b32 s_save_exec_hi, 0x0 293 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] 294 295 296 /* save SGPRs */ 297 // Save SGPR before LDS save, then the s0 to s4 can be used during LDS save... 298 ////////////////////////////// 299 300 // SGPR SR memory offset : size(VGPR) 301 get_vgpr_size_bytes(s_save_mem_offset) 302 // TODO, change RSRC word to rearrange memory layout for SGPRS 303 304 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 305 s_add_u32 s_save_alloc_size, s_save_alloc_size, 1 306 s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 4 //Number of SGPRs = (sgpr_size + 1) * 16 (non-zero value) 307 308 s_lshl_b32 s_save_buf_rsrc2, s_save_alloc_size, 2 //NUM_RECORDS in bytes 309 s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 310 311 // backup s_save_buf_rsrc0,1 to s_save_pc_lo/hi, since write_16sgpr_to_mem function will change the rsrc0 312 //s_mov_b64 s_save_pc_lo, s_save_buf_rsrc0 313 s_mov_b64 s_save_xnack_mask_lo, s_save_buf_rsrc0 314 s_add_u32 s_save_buf_rsrc0, s_save_buf_rsrc0, s_save_mem_offset 315 s_addc_u32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0 316 317 s_mov_b32 m0, 0x0 //SGPR initial index value =0 318 L_SAVE_SGPR_LOOP: 319 // SGPR is allocated in 16 SGPR granularity 320 s_movrels_b64 s0, s0 //s0 = s[0+m0], s1 = s[1+m0] 321 s_movrels_b64 s2, s2 //s2 = s[2+m0], s3 = s[3+m0] 322 s_movrels_b64 s4, s4 //s4 = s[4+m0], s5 = s[5+m0] 323 s_movrels_b64 s6, s6 //s6 = s[6+m0], s7 = s[7+m0] 324 s_movrels_b64 s8, s8 //s8 = s[8+m0], s9 = s[9+m0] 325 s_movrels_b64 s10, s10 //s10 = s[10+m0], s11 = s[11+m0] 326 s_movrels_b64 s12, s12 //s12 = s[12+m0], s13 = s[13+m0] 327 s_movrels_b64 s14, s14 //s14 = s[14+m0], s15 = s[15+m0] 328 329 write_16sgpr_to_mem(s0, s_save_buf_rsrc0, s_save_mem_offset) //PV: the best performance should be using s_buffer_store_dwordx4 330 s_add_u32 m0, m0, 16 //next sgpr index 331 s_cmp_lt_u32 m0, s_save_alloc_size //scc = (m0 < s_save_alloc_size) ? 1 : 0 332 s_cbranch_scc1 L_SAVE_SGPR_LOOP //SGPR save is complete? 333 // restore s_save_buf_rsrc0,1 334 //s_mov_b64 s_save_buf_rsrc0, s_save_pc_lo 335 s_mov_b64 s_save_buf_rsrc0, s_save_xnack_mask_lo 336 337 338 339 340 /* save first 4 VGPR, then LDS save could use */ 341 // each wave will alloc 4 vgprs at least... 342 ///////////////////////////////////////////////////////////////////////////////////// 343 344 s_mov_b32 s_save_mem_offset, 0 345 s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on 346 s_mov_b32 exec_hi, 0xFFFFFFFF 347 348 s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 349 350 // VGPR Allocated in 4-GPR granularity 351 352 buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 353 buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256 354 buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*2 355 buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*3 356 357 358 359 /* save LDS */ 360 ////////////////////////////// 361 362 L_SAVE_LDS: 363 364 // Change EXEC to all threads... 365 s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on 366 s_mov_b32 exec_hi, 0xFFFFFFFF 367 368 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 369 s_and_b32 s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF //lds_size is zero? 370 s_cbranch_scc0 L_SAVE_LDS_DONE //no lds used? jump to L_SAVE_DONE 371 372 s_barrier //LDS is used? wait for other waves in the same TG 373 //s_and_b32 s_save_tmp, tba_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK //exec is still used here 374 s_and_b32 s_save_tmp, s_save_exec_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK //exec is still used here 375 s_cbranch_scc0 L_SAVE_LDS_DONE 376 377 // first wave do LDS save; 378 379 s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 6 //LDS size in dwords = lds_size * 64dw 380 s_lshl_b32 s_save_alloc_size, s_save_alloc_size, 2 //LDS size in bytes 381 s_mov_b32 s_save_buf_rsrc2, s_save_alloc_size //NUM_RECORDS in bytes 382 383 // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG) 384 // 385 get_vgpr_size_bytes(s_save_mem_offset) 386 get_sgpr_size_bytes(s_save_tmp) 387 s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp 388 s_add_u32 s_save_mem_offset, s_save_mem_offset, get_hwreg_size_bytes() 389 390 391 s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 392 s_mov_b32 m0, 0x0 //lds_offset initial value = 0 393 394 395 v_mbcnt_lo_u32_b32 v2, 0xffffffff, 0x0 396 v_mbcnt_hi_u32_b32 v3, 0xffffffff, v2 // tid 397 v_mul_i32_i24 v2, v3, 8 // tid*8 398 v_mov_b32 v3, 256*2 399 s_mov_b32 m0, 0x10000 400 s_mov_b32 s0, s_save_buf_rsrc3 401 s_and_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0xFF7FFFFF // disable add_tid 402 s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0x58000 //DFMT 403 404 L_SAVE_LDS_LOOP_VECTOR: 405 ds_read_b64 v[0:1], v2 //x =LDS[a], byte address 406 s_waitcnt lgkmcnt(0) 407 buffer_store_dwordx2 v[0:1], v2, s_save_buf_rsrc0, s_save_mem_offset offen:1 glc:1 slc:1 408 // s_waitcnt vmcnt(0) 409 v_add_u32 v2, vcc[0:1], v2, v3 410 v_cmp_lt_u32 vcc[0:1], v2, s_save_alloc_size 411 s_cbranch_vccnz L_SAVE_LDS_LOOP_VECTOR 412 413 // restore rsrc3 414 s_mov_b32 s_save_buf_rsrc3, s0 415 416 L_SAVE_LDS_DONE: 417 418 419 /* save VGPRs - set the Rest VGPRs */ 420 ////////////////////////////////////////////////////////////////////////////////////// 421 L_SAVE_VGPR: 422 // VGPR SR memory offset: 0 423 // TODO rearrange the RSRC words to use swizzle for VGPR save... 424 425 s_mov_b32 s_save_mem_offset, (0+256*4) // for the rest VGPRs 426 s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on 427 s_mov_b32 exec_hi, 0xFFFFFFFF 428 429 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 430 s_add_u32 s_save_alloc_size, s_save_alloc_size, 1 431 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 432 s_lshl_b32 s_save_buf_rsrc2, s_save_alloc_size, 8 //NUM_RECORDS in bytes (64 threads*4) 433 s_mov_b32 s_save_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 434 435 // VGPR store using dw burst 436 s_mov_b32 m0, 0x4 //VGPR initial index value =0 437 s_cmp_lt_u32 m0, s_save_alloc_size 438 s_cbranch_scc0 L_SAVE_VGPR_END 439 440 441 s_set_gpr_idx_on m0, 0x1 //M0[7:0] = M0[7:0] and M0[15:12] = 0x1 442 s_add_u32 s_save_alloc_size, s_save_alloc_size, 0x1000 //add 0x1000 since we compare m0 against it later 443 444 L_SAVE_VGPR_LOOP: 445 v_mov_b32 v0, v0 //v0 = v[0+m0] 446 v_mov_b32 v1, v1 //v0 = v[0+m0] 447 v_mov_b32 v2, v2 //v0 = v[0+m0] 448 v_mov_b32 v3, v3 //v0 = v[0+m0] 449 450 buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 451 buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256 452 buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*2 453 buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1 offset:256*3 454 455 s_add_u32 m0, m0, 4 //next vgpr index 456 s_add_u32 s_save_mem_offset, s_save_mem_offset, 256*4 //every buffer_store_dword does 256 bytes 457 s_cmp_lt_u32 m0, s_save_alloc_size //scc = (m0 < s_save_alloc_size) ? 1 : 0 458 s_cbranch_scc1 L_SAVE_VGPR_LOOP //VGPR save is complete? 459 s_set_gpr_idx_off 460 461 L_SAVE_VGPR_END: 462 s_branch L_END_PGM 463 464 465 466 /**************************************************************************/ 467 /* restore routine */ 468 /**************************************************************************/ 469 470 L_RESTORE: 471 /* Setup Resource Contants */ 472 s_mov_b32 s_restore_buf_rsrc0, s_restore_spi_init_lo //base_addr_lo 473 s_and_b32 s_restore_buf_rsrc1, s_restore_spi_init_hi, 0x0000FFFF //base_addr_hi 474 s_or_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE 475 s_mov_b32 s_restore_buf_rsrc2, 0 //NUM_RECORDS initial value = 0 (in bytes) 476 s_mov_b32 s_restore_buf_rsrc3, S_RESTORE_BUF_RSRC_WORD3_MISC 477 s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_ATC_MASK 478 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 479 s_or_b32 s_restore_buf_rsrc3, s_restore_buf_rsrc3, s_restore_tmp //or ATC 480 s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_MTYPE_MASK 481 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 482 s_or_b32 s_restore_buf_rsrc3, s_restore_buf_rsrc3, s_restore_tmp //or MTYPE 483 484 /* global mem offset */ 485 // s_mov_b32 s_restore_mem_offset, 0x0 //mem offset initial value = 0 486 487 /* the first wave in the threadgroup */ 488 s_and_b32 s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK 489 s_cbranch_scc0 L_RESTORE_VGPR 490 491 /* restore LDS */ 492 ////////////////////////////// 493 L_RESTORE_LDS: 494 495 s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on //be consistent with SAVE although can be moved ahead 496 s_mov_b32 exec_hi, 0xFFFFFFFF 497 498 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 499 s_and_b32 s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF //lds_size is zero? 500 s_cbranch_scc0 L_RESTORE_VGPR //no lds used? jump to L_RESTORE_VGPR 501 s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 6 //LDS size in dwords = lds_size * 64dw 502 s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 2 //LDS size in bytes 503 s_mov_b32 s_restore_buf_rsrc2, s_restore_alloc_size //NUM_RECORDS in bytes 504 505 // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG) 506 // 507 get_vgpr_size_bytes(s_restore_mem_offset) 508 get_sgpr_size_bytes(s_restore_tmp) 509 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp 510 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, get_hwreg_size_bytes() //FIXME, Check if offset overflow??? 511 512 513 s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 514 s_mov_b32 m0, 0x0 //lds_offset initial value = 0 515 516 L_RESTORE_LDS_LOOP: 517 buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 // first 64DW 518 buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 offset:256 // second 64DW 519 s_add_u32 m0, m0, 256*2 // 128 DW 520 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*2 //mem offset increased by 128DW 521 s_cmp_lt_u32 m0, s_restore_alloc_size //scc=(m0 < s_restore_alloc_size) ? 1 : 0 522 s_cbranch_scc1 L_RESTORE_LDS_LOOP //LDS restore is complete? 523 524 525 /* restore VGPRs */ 526 ////////////////////////////// 527 L_RESTORE_VGPR: 528 // VGPR SR memory offset : 0 529 s_mov_b32 s_restore_mem_offset, 0x0 530 s_mov_b32 exec_lo, 0xFFFFFFFF //need every thread from now on //be consistent with SAVE although can be moved ahead 531 s_mov_b32 exec_hi, 0xFFFFFFFF 532 533 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 534 s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 1 535 s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 2 //Number of VGPRs = (vgpr_size + 1) * 4 (non-zero value) 536 s_lshl_b32 s_restore_buf_rsrc2, s_restore_alloc_size, 8 //NUM_RECORDS in bytes (64 threads*4) 537 s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 538 539 // VGPR load using dw burst 540 s_mov_b32 s_restore_mem_offset_save, s_restore_mem_offset // restore start with v1, v0 will be the last 541 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4 542 s_mov_b32 m0, 4 //VGPR initial index value = 1 543 s_set_gpr_idx_on m0, 0x8 //M0[7:0] = M0[7:0] and M0[15:12] = 0x8 544 s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 0x8000 //add 0x8000 since we compare m0 against it later 545 546 L_RESTORE_VGPR_LOOP: 547 buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 548 buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256 549 buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*2 550 buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*3 551 s_waitcnt vmcnt(0) //ensure data ready 552 v_mov_b32 v0, v0 //v[0+m0] = v0 553 v_mov_b32 v1, v1 554 v_mov_b32 v2, v2 555 v_mov_b32 v3, v3 556 s_add_u32 m0, m0, 4 //next vgpr index 557 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, 256*4 //every buffer_load_dword does 256 bytes 558 s_cmp_lt_u32 m0, s_restore_alloc_size //scc = (m0 < s_restore_alloc_size) ? 1 : 0 559 s_cbranch_scc1 L_RESTORE_VGPR_LOOP //VGPR restore (except v0) is complete? 560 s_set_gpr_idx_off 561 /* VGPR restore on v0 */ 562 buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 563 buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256 564 buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256*2 565 buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save slc:1 glc:1 offset:256*3 566 567 /* restore SGPRs */ 568 ////////////////////////////// 569 570 // SGPR SR memory offset : size(VGPR) 571 get_vgpr_size_bytes(s_restore_mem_offset) 572 get_sgpr_size_bytes(s_restore_tmp) 573 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp 574 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 575 // TODO, change RSRC word to rearrange memory layout for SGPRS 576 577 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 578 s_add_u32 s_restore_alloc_size, s_restore_alloc_size, 1 579 s_lshl_b32 s_restore_alloc_size, s_restore_alloc_size, 4 //Number of SGPRs = (sgpr_size + 1) * 16 (non-zero value) 580 581 s_lshl_b32 s_restore_buf_rsrc2, s_restore_alloc_size, 2 //NUM_RECORDS in bytes 582 s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 583 584 /* If 112 SGPRs ar allocated, 4 sgprs are not used TBA(108,109),TMA(110,111), 585 However, we are safe to restore these 4 SGPRs anyway, since TBA,TMA will later be restored by HWREG 586 */ 587 s_mov_b32 m0, s_restore_alloc_size 588 589 L_RESTORE_SGPR_LOOP: 590 read_16sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset) //PV: further performance improvement can be made 591 s_waitcnt lgkmcnt(0) //ensure data ready 592 593 s_sub_u32 m0, m0, 16 // Restore from S[n] to S[0] 594 595 s_movreld_b64 s0, s0 //s[0+m0] = s0 596 s_movreld_b64 s2, s2 597 s_movreld_b64 s4, s4 598 s_movreld_b64 s6, s6 599 s_movreld_b64 s8, s8 600 s_movreld_b64 s10, s10 601 s_movreld_b64 s12, s12 602 s_movreld_b64 s14, s14 603 604 s_cmp_eq_u32 m0, 0 //scc = (m0 < s_restore_alloc_size) ? 1 : 0 605 s_cbranch_scc0 L_RESTORE_SGPR_LOOP //SGPR restore (except s0) is complete? 606 607 /* restore HW registers */ 608 ////////////////////////////// 609 L_RESTORE_HWREG: 610 611 // HWREG SR memory offset : size(VGPR)+size(SGPR) 612 get_vgpr_size_bytes(s_restore_mem_offset) 613 get_sgpr_size_bytes(s_restore_tmp) 614 s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp 615 616 617 s_mov_b32 s_restore_buf_rsrc2, 0x4 //NUM_RECORDS in bytes 618 s_mov_b32 s_restore_buf_rsrc2, 0x1000000 //NUM_RECORDS in bytes 619 620 read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset) //M0 621 read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //PC 622 read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset) 623 read_hwreg_from_mem(s_restore_exec_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //EXEC 624 read_hwreg_from_mem(s_restore_exec_hi, s_restore_buf_rsrc0, s_restore_mem_offset) 625 read_hwreg_from_mem(s_restore_status, s_restore_buf_rsrc0, s_restore_mem_offset) //STATUS 626 read_hwreg_from_mem(s_restore_trapsts, s_restore_buf_rsrc0, s_restore_mem_offset) //TRAPSTS 627 read_hwreg_from_mem(xnack_mask_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //XNACK_MASK_LO 628 read_hwreg_from_mem(xnack_mask_hi, s_restore_buf_rsrc0, s_restore_mem_offset) //XNACK_MASK_HI 629 read_hwreg_from_mem(s_restore_mode, s_restore_buf_rsrc0, s_restore_mem_offset) //MODE 630 read_hwreg_from_mem(tba_lo, s_restore_buf_rsrc0, s_restore_mem_offset) //TBA_LO 631 read_hwreg_from_mem(tba_hi, s_restore_buf_rsrc0, s_restore_mem_offset) //TBA_HI 632 633 s_waitcnt lgkmcnt(0) //from now on, it is safe to restore STATUS and IB_STS 634 635 s_mov_b32 m0, s_restore_m0 636 s_mov_b32 exec_lo, s_restore_exec_lo 637 s_mov_b32 exec_hi, s_restore_exec_hi 638 639 s_and_b32 s_restore_m0, SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK, s_restore_trapsts 640 s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE), s_restore_m0 641 s_and_b32 s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK, s_restore_trapsts 642 s_lshr_b32 s_restore_m0, s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT 643 s_setreg_b32 hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE), s_restore_m0 644 //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 645 s_setreg_b32 hwreg(HW_REG_MODE), s_restore_mode 646 //reuse s_restore_m0 as a temp register 647 s_and_b32 s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_RCNT_MASK 648 s_lshr_b32 s_restore_m0, s_restore_m0, S_SAVE_PC_HI_RCNT_SHIFT 649 s_lshl_b32 s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_RCNT_SHIFT 650 s_mov_b32 s_restore_tmp, 0x0 //IB_STS is zero 651 s_or_b32 s_restore_tmp, s_restore_tmp, s_restore_m0 652 s_and_b32 s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_FIRST_REPLAY_MASK 653 s_lshr_b32 s_restore_m0, s_restore_m0, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT 654 s_lshl_b32 s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT 655 s_or_b32 s_restore_tmp, s_restore_tmp, s_restore_m0 656 s_and_b32 s_restore_m0, s_restore_status, SQ_WAVE_STATUS_INST_ATC_MASK 657 s_lshr_b32 s_restore_m0, s_restore_m0, SQ_WAVE_STATUS_INST_ATC_SHIFT 658 s_setreg_b32 hwreg(HW_REG_IB_STS), s_restore_tmp 659 660 s_and_b32 s_restore_pc_hi, s_restore_pc_hi, 0x0000ffff //pc[47:32] //Do it here in order not to affect STATUS 661 s_and_b64 exec, exec, exec // Restore STATUS.EXECZ, not writable by s_setreg_b32 662 s_and_b64 vcc, vcc, vcc // Restore STATUS.VCCZ, not writable by s_setreg_b32 663 set_status_without_spi_prio(s_restore_status, s_restore_tmp) // SCC is included, which is changed by previous salu 664 665 s_barrier //barrier to ensure the readiness of LDS before access attempts from any other wave in the same TG //FIXME not performance-optimal at this time 666 667 // s_rfe_b64 s_restore_pc_lo //Return to the main shader program and resume execution 668 s_rfe_restore_b64 s_restore_pc_lo, s_restore_m0 // s_restore_m0[0] is used to set STATUS.inst_atc 669 670 671 /**************************************************************************/ 672 /* the END */ 673 /**************************************************************************/ 674 L_END_PGM: 675 s_endpgm 676 677 end 678 679 680 /**************************************************************************/ 681 /* the helper functions */ 682 /**************************************************************************/ 683 684 //Only for save hwreg to mem 685 function write_hwreg_to_mem(s, s_rsrc, s_mem_offset) 686 s_mov_b32 exec_lo, m0 //assuming exec_lo is not needed anymore from this point on 687 s_mov_b32 m0, s_mem_offset 688 s_buffer_store_dword s, s_rsrc, m0 glc:1 689 s_add_u32 s_mem_offset, s_mem_offset, 4 690 s_mov_b32 m0, exec_lo 691 end 692 693 694 // HWREG are saved before SGPRs, so all HWREG could be use. 695 function write_16sgpr_to_mem(s, s_rsrc, s_mem_offset) 696 697 s_buffer_store_dwordx4 s[0], s_rsrc, 0 glc:1 698 s_buffer_store_dwordx4 s[4], s_rsrc, 16 glc:1 699 s_buffer_store_dwordx4 s[8], s_rsrc, 32 glc:1 700 s_buffer_store_dwordx4 s[12], s_rsrc, 48 glc:1 701 s_add_u32 s_rsrc[0], s_rsrc[0], 4*16 702 s_addc_u32 s_rsrc[1], s_rsrc[1], 0x0 // +scc 703 end 704 705 706 function read_hwreg_from_mem(s, s_rsrc, s_mem_offset) 707 s_buffer_load_dword s, s_rsrc, s_mem_offset glc:1 708 s_add_u32 s_mem_offset, s_mem_offset, 4 709 end 710 711 function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset) 712 s_buffer_load_dwordx16 s, s_rsrc, s_mem_offset glc:1 713 s_sub_u32 s_mem_offset, s_mem_offset, 4*16 714 end 715 716 717 718 function get_lds_size_bytes(s_lds_size_byte) 719 // SQ LDS granularity is 64DW, while PGM_RSRC2.lds_size is in granularity 128DW 720 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 721 s_lshl_b32 s_lds_size_byte, s_lds_size_byte, 8 //LDS size in dwords = lds_size * 64 *4Bytes // granularity 64DW 722 end 723 724 function get_vgpr_size_bytes(s_vgpr_size_byte) 725 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 726 s_add_u32 s_vgpr_size_byte, s_vgpr_size_byte, 1 727 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 728 end 729 730 function get_sgpr_size_bytes(s_sgpr_size_byte) 731 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 732 s_add_u32 s_sgpr_size_byte, s_sgpr_size_byte, 1 733 s_lshl_b32 s_sgpr_size_byte, s_sgpr_size_byte, 6 //Number of SGPRs = (sgpr_size + 1) * 16 *4 (non-zero value) 734 end 735 736 function get_hwreg_size_bytes 737 return 128 //HWREG size 128 bytes 738 end 739 740 function set_status_without_spi_prio(status, tmp) 741 // Do not restore STATUS.SPI_PRIO since scheduler may have raised it. 742 s_lshr_b32 tmp, status, SQ_WAVE_STATUS_POST_SPI_PRIO_SHIFT 743 s_setreg_b32 hwreg(HW_REG_STATUS, SQ_WAVE_STATUS_POST_SPI_PRIO_SHIFT, SQ_WAVE_STATUS_POST_SPI_PRIO_SIZE), tmp 744 s_nop 0x2 // avoid S_SETREG => S_SETREG hazard 745 s_setreg_b32 hwreg(HW_REG_STATUS, SQ_WAVE_STATUS_PRE_SPI_PRIO_SHIFT, SQ_WAVE_STATUS_PRE_SPI_PRIO_SIZE), status 746 end 747
Indexes created Mon Sep 29 21:09:56 GMT 2025