1 /* fuc microcode for gf100 PGRAPH/HUB 2 * 3 * Copyright 2011 Red Hat Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: Ben Skeggs 24 */ 25 26 #ifdef INCLUDE_DATA 27 hub_mmio_list_head: .b32 #hub_mmio_list_base 28 hub_mmio_list_tail: .b32 #hub_mmio_list_next 29 30 gpc_count: .b32 0 31 rop_count: .b32 0 32 cmd_queue: queue_init 33 34 ctx_current: .b32 0 35 36 .align 256 37 chan_data: 38 chan_mmio_count: .b32 0 39 chan_mmio_address: .b32 0 40 41 .align 256 42 xfer_data: .skip 256 43 44 hub_mmio_list_base: 45 .b32 0x0417e91c // 0x17e91c, 2 46 hub_mmio_list_next: 47 #endif 48 49 #ifdef INCLUDE_CODE 50 // reports an exception to the host 51 // 52 // In: $r15 error code (see os.h) 53 // 54 error: 55 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_VAL(5), 0, $r15) 56 mov $r15 1 57 nv_iowr(NV_PGRAPH_FECS_INTR_UP_SET, 0, $r15) 58 ret 59 60 // HUB fuc initialisation, executed by triggering ucode start, will 61 // fall through to main loop after completion. 62 // 63 // Output: 64 // CC_SCRATCH[0]: 65 // 31:31: set to signal completion 66 // CC_SCRATCH[1]: 67 // 31:0: total PGRAPH context size 68 // 69 init: 70 clear b32 $r0 71 mov $xdbase $r0 72 73 // setup stack 74 nv_iord($r1, NV_PGRAPH_FECS_CAPS, 0) 75 extr $r1 $r1 9:17 76 shl b32 $r1 8 77 mov $sp $r1 78 79 // enable fifo access 80 mov $r2 NV_PGRAPH_FECS_ACCESS_FIFO 81 nv_iowr(NV_PGRAPH_FECS_ACCESS, 0, $r2) 82 83 // setup i0 handler, and route all interrupts to it 84 mov $r1 #ih 85 mov $iv0 $r1 86 87 clear b32 $r2 88 nv_iowr(NV_PGRAPH_FECS_INTR_ROUTE, 0, $r2) 89 90 // route HUB_CHSW_PULSE to fuc interrupt 8 91 mov $r2 0x2003 // { HUB_CHSW_PULSE, ZERO } -> intr 8 92 nv_iowr(NV_PGRAPH_FECS_IROUTE, 0, $r2) 93 94 // not sure what these are, route them because NVIDIA does, and 95 // the IRQ handler will signal the host if we ever get one.. we 96 // may find out if/why we need to handle these if so.. 97 // 98 mov $r2 0x2004 // { 0x04, ZERO } -> intr 9 99 nv_iowr(NV_PGRAPH_FECS_IROUTE, 1, $r2) 100 mov $r2 0x200b // { HUB_FIRMWARE_MTHD, ZERO } -> intr 10 101 nv_iowr(NV_PGRAPH_FECS_IROUTE, 2, $r2) 102 mov $r2 0x200c // { 0x0c, ZERO } -> intr 15 103 nv_iowr(NV_PGRAPH_FECS_IROUTE, 7, $r2) 104 105 // enable all INTR_UP interrupts 106 sub b32 $r3 $r0 1 107 nv_iowr(NV_PGRAPH_FECS_INTR_UP_EN, 0, $r3) 108 109 // enable fifo, ctxsw, 9, fwmthd, 15 interrupts 110 imm32($r2, 0x8704) 111 nv_iowr(NV_PGRAPH_FECS_INTR_EN_SET, 0, $r2) 112 113 // fifo level triggered, rest edge 114 mov $r2 NV_PGRAPH_FECS_INTR_MODE_FIFO_LEVEL 115 nv_iowr(NV_PGRAPH_FECS_INTR_MODE, 0, $r2) 116 117 // enable interrupts 118 bset $flags ie0 119 120 // fetch enabled GPC/ROP counts 121 nv_rd32($r14, 0x409604) 122 extr $r1 $r15 16:20 123 st b32 D[$r0 + #rop_count] $r1 124 and $r15 0x1f 125 st b32 D[$r0 + #gpc_count] $r15 126 127 // set BAR_REQMASK to GPC mask 128 mov $r1 1 129 shl b32 $r1 $r15 130 sub b32 $r1 1 131 nv_iowr(NV_PGRAPH_FECS_BAR_MASK0, 0, $r1) 132 nv_iowr(NV_PGRAPH_FECS_BAR_MASK1, 0, $r1) 133 134 // context size calculation, reserve first 256 bytes for use by fuc 135 mov $r1 256 136 137 // 138 mov $r15 2 139 call(ctx_4170s) 140 call(ctx_4170w) 141 mov $r15 0x10 142 call(ctx_86c) 143 144 // calculate size of mmio context data 145 ld b32 $r14 D[$r0 + #hub_mmio_list_head] 146 ld b32 $r15 D[$r0 + #hub_mmio_list_tail] 147 call(mmctx_size) 148 149 // set mmctx base addresses now so we don't have to do it later, 150 // they don't (currently) ever change 151 shr b32 $r4 $r1 8 152 nv_iowr(NV_PGRAPH_FECS_MMCTX_SAVE_SWBASE, 0, $r4) 153 nv_iowr(NV_PGRAPH_FECS_MMCTX_LOAD_SWBASE, 0, $r4) 154 add b32 $r3 0x1300 155 add b32 $r1 $r15 156 shr b32 $r15 2 157 nv_iowr(NV_PGRAPH_FECS_MMCTX_LOAD_COUNT, 0, $r15) // wtf?? 158 159 // strands, base offset needs to be aligned to 256 bytes 160 shr b32 $r1 8 161 add b32 $r1 1 162 shl b32 $r1 8 163 mov b32 $r15 $r1 164 call(strand_ctx_init) 165 add b32 $r1 $r15 166 167 // initialise each GPC in sequence by passing in the offset of its 168 // context data in GPCn_CC_SCRATCH[1], and starting its FUC (which 169 // has previously been uploaded by the host) running. 170 // 171 // the GPC fuc init sequence will set GPCn_CC_SCRATCH[0] bit 31 172 // when it has completed, and return the size of its context data 173 // in GPCn_CC_SCRATCH[1] 174 // 175 ld b32 $r3 D[$r0 + #gpc_count] 176 imm32($r4, 0x502000) 177 init_gpc: 178 // setup, and start GPC ucode running 179 add b32 $r14 $r4 0x804 180 mov b32 $r15 $r1 181 call(nv_wr32) // CC_SCRATCH[1] = ctx offset 182 add b32 $r14 $r4 0x10c 183 clear b32 $r15 184 call(nv_wr32) 185 add b32 $r14 $r4 0x104 186 call(nv_wr32) // ENTRY 187 add b32 $r14 $r4 0x100 188 mov $r15 2 // CTRL_START_TRIGGER 189 call(nv_wr32) // CTRL 190 191 // wait for it to complete, and adjust context size 192 add b32 $r14 $r4 0x800 193 init_gpc_wait: 194 call(nv_rd32) 195 xbit $r15 $r15 31 196 bra e #init_gpc_wait 197 add b32 $r14 $r4 0x804 198 call(nv_rd32) 199 add b32 $r1 $r15 200 201 // next! 202 add b32 $r4 0x8000 203 sub b32 $r3 1 204 bra ne #init_gpc 205 206 // 207 mov $r15 0 208 call(ctx_86c) 209 mov $r15 0 210 call(ctx_4170s) 211 212 // save context size, and tell host we're ready 213 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_VAL(1), 0, $r1) 214 clear b32 $r1 215 bset $r1 31 216 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_SET(0), 0, $r1) 217 218 // Main program loop, very simple, sleeps until woken up by the interrupt 219 // handler, pulls a command from the queue and executes its handler 220 // 221 wait: 222 // sleep until we have something to do 223 sleep $p0 224 bset $flags $p0 225 main: 226 mov $r13 #cmd_queue 227 call(queue_get) 228 bra $p1 #wait 229 230 // context switch, requested by GPU? 231 cmpu b32 $r14 0x4001 232 bra ne #main_not_ctx_switch 233 trace_set(T_AUTO) 234 nv_iord($r1, NV_PGRAPH_FECS_CHAN_ADDR, 0) 235 nv_iord($r2, NV_PGRAPH_FECS_CHAN_NEXT, 0) 236 237 xbit $r3 $r1 31 238 bra e #chsw_no_prev 239 xbit $r3 $r2 31 240 bra e #chsw_prev_no_next 241 push $r2 242 mov b32 $r2 $r1 243 trace_set(T_SAVE) 244 bclr $flags $p1 245 bset $flags $p2 246 call(ctx_xfer) 247 trace_clr(T_SAVE); 248 pop $r2 249 trace_set(T_LOAD); 250 bset $flags $p1 251 call(ctx_xfer) 252 trace_clr(T_LOAD); 253 bra #chsw_done 254 chsw_prev_no_next: 255 push $r2 256 mov b32 $r2 $r1 257 bclr $flags $p1 258 bclr $flags $p2 259 call(ctx_xfer) 260 pop $r2 261 nv_iowr(NV_PGRAPH_FECS_CHAN_ADDR, 0, $r2) 262 bra #chsw_done 263 chsw_no_prev: 264 xbit $r3 $r2 31 265 bra e #chsw_done 266 bset $flags $p1 267 bclr $flags $p2 268 call(ctx_xfer) 269 270 // ack the context switch request 271 chsw_done: 272 mov $r2 NV_PGRAPH_FECS_CHSW_ACK 273 nv_iowr(NV_PGRAPH_FECS_CHSW, 0, $r2) 274 trace_clr(T_AUTO) 275 bra #main 276 277 // request to set current channel? (*not* a context switch) 278 main_not_ctx_switch: 279 cmpu b32 $r14 0x0001 280 bra ne #main_not_ctx_chan 281 mov b32 $r2 $r15 282 call(ctx_chan) 283 bra #main_done 284 285 // request to store current channel context? 286 main_not_ctx_chan: 287 cmpu b32 $r14 0x0002 288 bra ne #main_not_ctx_save 289 trace_set(T_SAVE) 290 bclr $flags $p1 291 bclr $flags $p2 292 call(ctx_xfer) 293 trace_clr(T_SAVE) 294 bra #main_done 295 296 main_not_ctx_save: 297 shl b32 $r15 $r14 16 298 or $r15 E_BAD_COMMAND 299 call(error) 300 bra #main 301 302 main_done: 303 clear b32 $r2 304 bset $r2 31 305 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_SET(0), 0, $r2) 306 bra #main 307 308 // interrupt handler 309 ih: 310 push $r0 311 push $r8 312 mov $r8 $flags 313 push $r8 314 push $r9 315 push $r10 316 push $r11 317 push $r13 318 push $r14 319 push $r15 320 clear b32 $r0 321 322 // incoming fifo command? 323 nv_iord($r10, NV_PGRAPH_FECS_INTR, 0) 324 and $r11 $r10 NV_PGRAPH_FECS_INTR_FIFO 325 bra e #ih_no_fifo 326 // queue incoming fifo command for later processing 327 mov $r13 #cmd_queue 328 nv_iord($r14, NV_PGRAPH_FECS_FIFO_CMD, 0) 329 nv_iord($r15, NV_PGRAPH_FECS_FIFO_DATA, 0) 330 call(queue_put) 331 add b32 $r11 0x400 332 mov $r14 1 333 nv_iowr(NV_PGRAPH_FECS_FIFO_ACK, 0, $r14) 334 335 // context switch request? 336 ih_no_fifo: 337 and $r11 $r10 NV_PGRAPH_FECS_INTR_CHSW 338 bra e #ih_no_ctxsw 339 // enqueue a context switch for later processing 340 mov $r13 #cmd_queue 341 mov $r14 0x4001 342 call(queue_put) 343 344 // firmware method? 345 ih_no_ctxsw: 346 and $r11 $r10 NV_PGRAPH_FECS_INTR_FWMTHD 347 bra e #ih_no_fwmthd 348 // none we handle; report to host and ack 349 nv_rd32($r15, NV_PGRAPH_TRAPPED_DATA_LO) 350 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_VAL(4), 0, $r15) 351 nv_rd32($r15, NV_PGRAPH_TRAPPED_ADDR) 352 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_VAL(3), 0, $r15) 353 extr $r14 $r15 16:18 354 shl b32 $r14 $r14 2 355 imm32($r15, NV_PGRAPH_FE_OBJECT_TABLE(0)) 356 add b32 $r14 $r15 357 call(nv_rd32) 358 nv_iowr(NV_PGRAPH_FECS_CC_SCRATCH_VAL(2), 0, $r15) 359 mov $r15 E_BAD_FWMTHD 360 call(error) 361 mov $r11 0x100 362 nv_wr32(0x400144, $r11) 363 364 // anything we didn't handle, bring it to the host's attention 365 ih_no_fwmthd: 366 mov $r11 0x504 // FIFO | CHSW | FWMTHD 367 not b32 $r11 368 and $r11 $r10 $r11 369 bra e #ih_no_other 370 nv_iowr(NV_PGRAPH_FECS_INTR_UP_SET, 0, $r11) 371 372 // ack, and wake up main() 373 ih_no_other: 374 nv_iowr(NV_PGRAPH_FECS_INTR_ACK, 0, $r10) 375 376 pop $r15 377 pop $r14 378 pop $r13 379 pop $r11 380 pop $r10 381 pop $r9 382 pop $r8 383 mov $flags $r8 384 pop $r8 385 pop $r0 386 bclr $flags $p0 387 iret 388 389 #if CHIPSET < GK100 390 // Not real sure, but, MEM_CMD 7 will hang forever if this isn't done 391 ctx_4160s: 392 mov $r15 1 393 nv_wr32(0x404160, $r15) 394 ctx_4160s_wait: 395 nv_rd32($r15, 0x404160) 396 xbit $r15 $r15 4 397 bra e #ctx_4160s_wait 398 ret 399 400 // Without clearing again at end of xfer, some things cause PGRAPH 401 // to hang with STATUS=0x00000007 until it's cleared.. fbcon can 402 // still function with it set however... 403 ctx_4160c: 404 clear b32 $r15 405 nv_wr32(0x404160, $r15) 406 ret 407 #endif 408 409 // Again, not real sure 410 // 411 // In: $r15 value to set 0x404170 to 412 // 413 ctx_4170s: 414 or $r15 0x10 415 nv_wr32(0x404170, $r15) 416 ret 417 418 // Waits for a ctx_4170s() call to complete 419 // 420 ctx_4170w: 421 nv_rd32($r15, 0x404170) 422 and $r15 0x10 423 bra ne #ctx_4170w 424 ret 425 426 // Disables various things, waits a bit, and re-enables them.. 427 // 428 // Not sure how exactly this helps, perhaps "ENABLE" is not such a 429 // good description for the bits we turn off? Anyways, without this, 430 // funny things happen. 431 // 432 ctx_redswitch: 433 mov $r14 NV_PGRAPH_FECS_RED_SWITCH_ENABLE_GPC 434 or $r14 NV_PGRAPH_FECS_RED_SWITCH_POWER_ROP 435 or $r14 NV_PGRAPH_FECS_RED_SWITCH_POWER_GPC 436 or $r14 NV_PGRAPH_FECS_RED_SWITCH_POWER_MAIN 437 nv_iowr(NV_PGRAPH_FECS_RED_SWITCH, 0, $r14) 438 mov $r15 8 439 ctx_redswitch_delay: 440 sub b32 $r15 1 441 bra ne #ctx_redswitch_delay 442 or $r14 NV_PGRAPH_FECS_RED_SWITCH_ENABLE_ROP 443 or $r14 NV_PGRAPH_FECS_RED_SWITCH_ENABLE_MAIN 444 nv_iowr(NV_PGRAPH_FECS_RED_SWITCH, 0, $r14) 445 ret 446 447 // Not a clue what this is for, except that unless the value is 0x10, the 448 // strand context is saved (and presumably restored) incorrectly.. 449 // 450 // In: $r15 value to set to (0x00/0x10 are used) 451 // 452 ctx_86c: 453 nv_iowr(NV_PGRAPH_FECS_UNK86C, 0, $r15) 454 nv_wr32(0x408a14, $r15) 455 nv_wr32(NV_PGRAPH_GPCX_GPCCS_UNK86C, $r15) 456 ret 457 458 // In: $r15 NV_PGRAPH_FECS_MEM_CMD_* 459 ctx_mem: 460 nv_iowr(NV_PGRAPH_FECS_MEM_CMD, 0, $r15) 461 ctx_mem_wait: 462 nv_iord($r15, NV_PGRAPH_FECS_MEM_CMD, 0) 463 or $r15 $r15 464 bra ne #ctx_mem_wait 465 ret 466 467 // ctx_load - load's a channel's ctxctl data, and selects its vm 468 // 469 // In: $r2 channel address 470 // 471 ctx_load: 472 trace_set(T_CHAN) 473 474 // switch to channel, somewhat magic in parts.. 475 mov $r10 12 // DONE_UNK12 476 call(wait_donez) 477 clear b32 $r15 478 nv_iowr(0x409a24, 0, $r15) 479 nv_iowr(NV_PGRAPH_FECS_CHAN_NEXT, 0, $r2) 480 nv_iowr(NV_PGRAPH_FECS_MEM_CHAN, 0, $r2) 481 mov $r15 NV_PGRAPH_FECS_MEM_CMD_LOAD_CHAN 482 call(ctx_mem) 483 nv_iowr(NV_PGRAPH_FECS_CHAN_ADDR, 0, $r2) 484 485 // load channel header, fetch PGRAPH context pointer 486 mov $xtargets $r0 487 bclr $r2 31 488 shl b32 $r2 4 489 add b32 $r2 2 490 491 trace_set(T_LCHAN) 492 nv_iowr(NV_PGRAPH_FECS_MEM_BASE, 0, $r2) 493 imm32($r2, NV_PGRAPH_FECS_MEM_TARGET_UNK31) 494 or $r2 NV_PGRAPH_FECS_MEM_TARGET_AS_VRAM 495 nv_iowr(NV_PGRAPH_FECS_MEM_TARGET, 0, $r2) 496 mov $r1 0x10 // chan + 0x0210 497 mov $r2 #xfer_data 498 sethi $r2 0x00020000 // 16 bytes 499 xdld $r1 $r2 500 xdwait 501 trace_clr(T_LCHAN) 502 503 // update current context 504 ld b32 $r1 D[$r0 + #xfer_data + 4] 505 shl b32 $r1 24 506 ld b32 $r2 D[$r0 + #xfer_data + 0] 507 shr b32 $r2 8 508 or $r1 $r2 509 st b32 D[$r0 + #ctx_current] $r1 510 511 // set transfer base to start of context, and fetch context header 512 trace_set(T_LCTXH) 513 nv_iowr(NV_PGRAPH_FECS_MEM_BASE, 0, $r1) 514 mov $r2 NV_PGRAPH_FECS_MEM_TARGET_AS_VM 515 nv_iowr(NV_PGRAPH_FECS_MEM_TARGET, 0, $r2) 516 mov $r1 #chan_data 517 sethi $r1 0x00060000 // 256 bytes 518 xdld $r0 $r1 519 xdwait 520 trace_clr(T_LCTXH) 521 522 trace_clr(T_CHAN) 523 ret 524 525 // ctx_chan - handler for HUB_SET_CHAN command, will set a channel as 526 // the active channel for ctxctl, but not actually transfer 527 // any context data. intended for use only during initial 528 // context construction. 529 // 530 // In: $r2 channel address 531 // 532 ctx_chan: 533 #if CHIPSET < GK100 534 call(ctx_4160s) 535 #endif 536 call(ctx_load) 537 mov $r10 12 // DONE_UNK12 538 call(wait_donez) 539 mov $r15 5 // MEM_CMD 5 ??? 540 call(ctx_mem) 541 #if CHIPSET < GK100 542 call(ctx_4160c) 543 #endif 544 ret 545 546 // Execute per-context state overrides list 547 // 548 // Only executed on the first load of a channel. Might want to look into 549 // removing this and having the host directly modify the channel's context 550 // to change this state... The nouveau DRM already builds this list as 551 // it's definitely needed for NVIDIA's, so we may as well use it for now 552 // 553 // Input: $r1 mmio list length 554 // 555 ctx_mmio_exec: 556 // set transfer base to be the mmio list 557 ld b32 $r3 D[$r0 + #chan_mmio_address] 558 nv_iowr(NV_PGRAPH_FECS_MEM_BASE, 0, $r3) 559 560 clear b32 $r3 561 ctx_mmio_loop: 562 // fetch next 256 bytes of mmio list if necessary 563 and $r4 $r3 0xff 564 bra ne #ctx_mmio_pull 565 mov $r5 #xfer_data 566 sethi $r5 0x00060000 // 256 bytes 567 xdld $r3 $r5 568 xdwait 569 570 // execute a single list entry 571 ctx_mmio_pull: 572 ld b32 $r14 D[$r4 + #xfer_data + 0x00] 573 ld b32 $r15 D[$r4 + #xfer_data + 0x04] 574 call(nv_wr32) 575 576 // next! 577 add b32 $r3 8 578 sub b32 $r1 1 579 bra ne #ctx_mmio_loop 580 581 // set transfer base back to the current context 582 ctx_mmio_done: 583 ld b32 $r3 D[$r0 + #ctx_current] 584 nv_iowr(NV_PGRAPH_FECS_MEM_BASE, 0, $r3) 585 586 // disable the mmio list now, we don't need/want to execute it again 587 st b32 D[$r0 + #chan_mmio_count] $r0 588 mov $r1 #chan_data 589 sethi $r1 0x00060000 // 256 bytes 590 xdst $r0 $r1 591 xdwait 592 ret 593 594 // Transfer HUB context data between GPU and storage area 595 // 596 // In: $r2 channel address 597 // $p1 clear on save, set on load 598 // $p2 set if opposite direction done/will be done, so: 599 // on save it means: "a load will follow this save" 600 // on load it means: "a save preceeded this load" 601 // 602 ctx_xfer: 603 // according to mwk, some kind of wait for idle 604 mov $r14 4 605 nv_iowr(0x409c08, 0, $r14) 606 ctx_xfer_idle: 607 nv_iord($r14, 0x409c00, 0) 608 and $r14 0x2000 609 bra ne #ctx_xfer_idle 610 611 bra not $p1 #ctx_xfer_pre 612 bra $p2 #ctx_xfer_pre_load 613 ctx_xfer_pre: 614 mov $r15 0x10 615 call(ctx_86c) 616 #if CHIPSET < GK100 617 call(ctx_4160s) 618 #endif 619 bra not $p1 #ctx_xfer_exec 620 621 ctx_xfer_pre_load: 622 mov $r15 2 623 call(ctx_4170s) 624 call(ctx_4170w) 625 call(ctx_redswitch) 626 clear b32 $r15 627 call(ctx_4170s) 628 call(ctx_load) 629 630 // fetch context pointer, and initiate xfer on all GPCs 631 ctx_xfer_exec: 632 ld b32 $r1 D[$r0 + #ctx_current] 633 634 clear b32 $r2 635 nv_iowr(NV_PGRAPH_FECS_BAR, 0, $r2) 636 637 nv_wr32(0x41a500, $r1) // GPC_BCAST_WRCMD_DATA = ctx pointer 638 xbit $r15 $flags $p1 639 xbit $r2 $flags $p2 640 shl b32 $r2 1 641 or $r15 $r2 642 nv_wr32(0x41a504, $r15) // GPC_BCAST_WRCMD_CMD = GPC_XFER(type) 643 644 // strands 645 call(strand_pre) 646 clear b32 $r2 647 nv_iowr(NV_PGRAPH_FECS_STRAND_SELECT, 0x3f, $r2) 648 xbit $r2 $flags $p1 // SAVE/LOAD 649 add b32 $r2 NV_PGRAPH_FECS_STRAND_CMD_SAVE 650 nv_iowr(NV_PGRAPH_FECS_STRAND_CMD, 0x3f, $r2) 651 652 // mmio context 653 xbit $r10 $flags $p1 // direction 654 or $r10 6 // first, last 655 mov $r11 0 // base = 0 656 ld b32 $r12 D[$r0 + #hub_mmio_list_head] 657 ld b32 $r13 D[$r0 + #hub_mmio_list_tail] 658 mov $r14 0 // not multi 659 call(mmctx_xfer) 660 661 // wait for GPCs to all complete 662 mov $r10 8 // DONE_BAR 663 call(wait_doneo) 664 665 // wait for strand xfer to complete 666 call(strand_wait) 667 668 // post-op 669 bra $p1 #ctx_xfer_post 670 mov $r10 12 // DONE_UNK12 671 call(wait_donez) 672 mov $r15 5 // MEM_CMD 5 ??? 673 call(ctx_mem) 674 675 bra $p2 #ctx_xfer_done 676 ctx_xfer_post: 677 mov $r15 2 678 call(ctx_4170s) 679 clear b32 $r15 680 call(ctx_86c) 681 call(strand_post) 682 call(ctx_4170w) 683 clear b32 $r15 684 call(ctx_4170s) 685 686 bra not $p1 #ctx_xfer_no_post_mmio 687 ld b32 $r1 D[$r0 + #chan_mmio_count] 688 or $r1 $r1 689 bra e #ctx_xfer_no_post_mmio 690 call(ctx_mmio_exec) 691 692 ctx_xfer_no_post_mmio: 693 #if CHIPSET < GK100 694 call(ctx_4160c) 695 #endif 696 697 ctx_xfer_done: 698 ret 699 #endif 700
Indexes created Sat Oct 11 16:09:52 GMT 2025