1 /* 2 * QEMU ESP/NCR53C9x emulation 3 * 4 * Copyright (c) 2005-2006 Fabrice Bellard 5 * Copyright (c) 2012 Herve Poussineau 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 #include "hw/sysbus.h" 27 #include "hw/scsi/esp.h" 28 #include "trace.h" 29 #include "qemu/log.h" 30 31 /* 32 * On Sparc32, this is the ESP (NCR53C90) part of chip STP2000 (Master I/O), 33 * also produced as NCR89C100. See 34 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt 35 * and 36 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt 37 */ 38 39 static void esp_raise_irq(ESPState *s) 40 { 41 if (!(s->rregs[ESP_RSTAT] & STAT_INT)) { 42 s->rregs[ESP_RSTAT] |= STAT_INT; 43 qemu_irq_raise(s->irq); 44 trace_esp_raise_irq(); 45 } 46 } 47 48 static void esp_lower_irq(ESPState *s) 49 { 50 if (s->rregs[ESP_RSTAT] & STAT_INT) { 51 s->rregs[ESP_RSTAT] &= ~STAT_INT; 52 qemu_irq_lower(s->irq); 53 trace_esp_lower_irq(); 54 } 55 } 56 57 void esp_dma_enable(ESPState *s, int irq, int level) 58 { 59 if (level) { 60 s->dma_enabled = 1; 61 trace_esp_dma_enable(); 62 if (s->dma_cb) { 63 s->dma_cb(s); 64 s->dma_cb = NULL; 65 } 66 } else { 67 trace_esp_dma_disable(); 68 s->dma_enabled = 0; 69 } 70 } 71 72 void esp_request_cancelled(SCSIRequest *req) 73 { 74 ESPState *s = req->hba_private; 75 76 if (req == s->current_req) { 77 scsi_req_unref(s->current_req); 78 s->current_req = NULL; 79 s->current_dev = NULL; 80 } 81 } 82 83 static uint32_t get_cmd(ESPState *s, uint8_t *buf) 84 { 85 uint32_t dmalen; 86 int target; 87 88 target = s->wregs[ESP_WBUSID] & BUSID_DID; 89 if (s->dma) { 90 dmalen = s->rregs[ESP_TCLO]; 91 dmalen |= s->rregs[ESP_TCMID] << 8; 92 dmalen |= s->rregs[ESP_TCHI] << 16; 93 s->dma_memory_read(s->dma_opaque, buf, dmalen); 94 } else { 95 dmalen = s->ti_size; 96 memcpy(buf, s->ti_buf, dmalen); 97 buf[0] = buf[2] >> 5; 98 } 99 trace_esp_get_cmd(dmalen, target); 100 101 s->ti_size = 0; 102 s->ti_rptr = 0; 103 s->ti_wptr = 0; 104 105 if (s->current_req) { 106 /* Started a new command before the old one finished. Cancel it. */ 107 scsi_req_cancel(s->current_req); 108 s->async_len = 0; 109 } 110 111 s->current_dev = scsi_device_find(&s->bus, 0, target, 0); 112 if (!s->current_dev) { 113 // No such drive 114 s->rregs[ESP_RSTAT] = 0; 115 s->rregs[ESP_RINTR] = INTR_DC; 116 s->rregs[ESP_RSEQ] = SEQ_0; 117 esp_raise_irq(s); 118 return 0; 119 } 120 return dmalen; 121 } 122 123 static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid) 124 { 125 int32_t datalen; 126 int lun; 127 SCSIDevice *current_lun; 128 129 trace_esp_do_busid_cmd(busid); 130 lun = busid & 7; 131 current_lun = scsi_device_find(&s->bus, 0, s->current_dev->id, lun); 132 s->current_req = scsi_req_new(current_lun, 0, lun, buf, s); 133 datalen = scsi_req_enqueue(s->current_req); 134 s->ti_size = datalen; 135 if (datalen != 0) { 136 s->rregs[ESP_RSTAT] = STAT_TC; 137 s->dma_left = 0; 138 s->dma_counter = 0; 139 if (datalen > 0) { 140 s->rregs[ESP_RSTAT] |= STAT_DI; 141 } else { 142 s->rregs[ESP_RSTAT] |= STAT_DO; 143 } 144 scsi_req_continue(s->current_req); 145 } 146 s->rregs[ESP_RINTR] = INTR_BS | INTR_FC; 147 s->rregs[ESP_RSEQ] = SEQ_CD; 148 esp_raise_irq(s); 149 } 150 151 static void do_cmd(ESPState *s, uint8_t *buf) 152 { 153 uint8_t busid = buf[0]; 154 155 do_busid_cmd(s, &buf[1], busid); 156 } 157 158 static void handle_satn(ESPState *s) 159 { 160 uint8_t buf[32]; 161 int len; 162 163 if (s->dma && !s->dma_enabled) { 164 s->dma_cb = handle_satn; 165 return; 166 } 167 len = get_cmd(s, buf); 168 if (len) 169 do_cmd(s, buf); 170 } 171 172 static void handle_s_without_atn(ESPState *s) 173 { 174 uint8_t buf[32]; 175 int len; 176 177 if (s->dma && !s->dma_enabled) { 178 s->dma_cb = handle_s_without_atn; 179 return; 180 } 181 len = get_cmd(s, buf); 182 if (len) { 183 do_busid_cmd(s, buf, 0); 184 } 185 } 186 187 static void handle_satn_stop(ESPState *s) 188 { 189 if (s->dma && !s->dma_enabled) { 190 s->dma_cb = handle_satn_stop; 191 return; 192 } 193 s->cmdlen = get_cmd(s, s->cmdbuf); 194 if (s->cmdlen) { 195 trace_esp_handle_satn_stop(s->cmdlen); 196 s->do_cmd = 1; 197 s->rregs[ESP_RSTAT] = STAT_TC | STAT_CD; 198 s->rregs[ESP_RINTR] = INTR_BS | INTR_FC; 199 s->rregs[ESP_RSEQ] = SEQ_CD; 200 esp_raise_irq(s); 201 } 202 } 203 204 static void write_response(ESPState *s) 205 { 206 trace_esp_write_response(s->status); 207 s->ti_buf[0] = s->status; 208 s->ti_buf[1] = 0; 209 if (s->dma) { 210 s->dma_memory_write(s->dma_opaque, s->ti_buf, 2); 211 s->rregs[ESP_RSTAT] = STAT_TC | STAT_ST; 212 s->rregs[ESP_RINTR] = INTR_BS | INTR_FC; 213 s->rregs[ESP_RSEQ] = SEQ_CD; 214 } else { 215 s->ti_size = 2; 216 s->ti_rptr = 0; 217 s->ti_wptr = 0; 218 s->rregs[ESP_RFLAGS] = 2; 219 } 220 esp_raise_irq(s); 221 } 222 223 static void esp_dma_done(ESPState *s) 224 { 225 s->rregs[ESP_RSTAT] |= STAT_TC; 226 s->rregs[ESP_RINTR] = INTR_BS; 227 s->rregs[ESP_RSEQ] = 0; 228 s->rregs[ESP_RFLAGS] = 0; 229 s->rregs[ESP_TCLO] = 0; 230 s->rregs[ESP_TCMID] = 0; 231 s->rregs[ESP_TCHI] = 0; 232 esp_raise_irq(s); 233 } 234 235 static void esp_do_dma(ESPState *s) 236 { 237 uint32_t len; 238 int to_device; 239 240 to_device = (s->ti_size < 0); 241 len = s->dma_left; 242 if (s->do_cmd) { 243 trace_esp_do_dma(s->cmdlen, len); 244 s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen], len); 245 s->ti_size = 0; 246 s->cmdlen = 0; 247 s->do_cmd = 0; 248 do_cmd(s, s->cmdbuf); 249 return; 250 } 251 if (s->async_len == 0) { 252 /* Defer until data is available. */ 253 return; 254 } 255 if (len > s->async_len) { 256 len = s->async_len; 257 } 258 if (to_device) { 259 s->dma_memory_read(s->dma_opaque, s->async_buf, len); 260 } else { 261 s->dma_memory_write(s->dma_opaque, s->async_buf, len); 262 } 263 s->dma_left -= len; 264 s->async_buf += len; 265 s->async_len -= len; 266 if (to_device) 267 s->ti_size += len; 268 else 269 s->ti_size -= len; 270 if (s->async_len == 0) { 271 scsi_req_continue(s->current_req); 272 /* If there is still data to be read from the device then 273 complete the DMA operation immediately. Otherwise defer 274 until the scsi layer has completed. */ 275 if (to_device || s->dma_left != 0 || s->ti_size == 0) { 276 return; 277 } 278 } 279 280 /* Partially filled a scsi buffer. Complete immediately. */ 281 esp_dma_done(s); 282 } 283 284 void esp_command_complete(SCSIRequest *req, uint32_t status, 285 size_t resid) 286 { 287 ESPState *s = req->hba_private; 288 289 trace_esp_command_complete(); 290 if (s->ti_size != 0) { 291 trace_esp_command_complete_unexpected(); 292 } 293 s->ti_size = 0; 294 s->dma_left = 0; 295 s->async_len = 0; 296 if (status) { 297 trace_esp_command_complete_fail(); 298 } 299 s->status = status; 300 s->rregs[ESP_RSTAT] = STAT_ST; 301 esp_dma_done(s); 302 if (s->current_req) { 303 scsi_req_unref(s->current_req); 304 s->current_req = NULL; 305 s->current_dev = NULL; 306 } 307 } 308 309 void esp_transfer_data(SCSIRequest *req, uint32_t len) 310 { 311 ESPState *s = req->hba_private; 312 313 trace_esp_transfer_data(s->dma_left, s->ti_size); 314 s->async_len = len; 315 s->async_buf = scsi_req_get_buf(req); 316 if (s->dma_left) { 317 esp_do_dma(s); 318 } else if (s->dma_counter != 0 && s->ti_size <= 0) { 319 /* If this was the last part of a DMA transfer then the 320 completion interrupt is deferred to here. */ 321 esp_dma_done(s); 322 } 323 } 324 325 static void handle_ti(ESPState *s) 326 { 327 uint32_t dmalen, minlen; 328 329 if (s->dma && !s->dma_enabled) { 330 s->dma_cb = handle_ti; 331 return; 332 } 333 334 dmalen = s->rregs[ESP_TCLO]; 335 dmalen |= s->rregs[ESP_TCMID] << 8; 336 dmalen |= s->rregs[ESP_TCHI] << 16; 337 if (dmalen==0) { 338 dmalen=0x10000; 339 } 340 s->dma_counter = dmalen; 341 342 if (s->do_cmd) 343 minlen = (dmalen < 32) ? dmalen : 32; 344 else if (s->ti_size < 0) 345 minlen = (dmalen < -s->ti_size) ? dmalen : -s->ti_size; 346 else 347 minlen = (dmalen < s->ti_size) ? dmalen : s->ti_size; 348 trace_esp_handle_ti(minlen); 349 if (s->dma) { 350 s->dma_left = minlen; 351 s->rregs[ESP_RSTAT] &= ~STAT_TC; 352 esp_do_dma(s); 353 } else if (s->do_cmd) { 354 trace_esp_handle_ti_cmd(s->cmdlen); 355 s->ti_size = 0; 356 s->cmdlen = 0; 357 s->do_cmd = 0; 358 do_cmd(s, s->cmdbuf); 359 return; 360 } 361 } 362 363 void esp_hard_reset(ESPState *s) 364 { 365 memset(s->rregs, 0, ESP_REGS); 366 memset(s->wregs, 0, ESP_REGS); 367 s->rregs[ESP_TCHI] = s->chip_id; 368 s->ti_size = 0; 369 s->ti_rptr = 0; 370 s->ti_wptr = 0; 371 s->dma = 0; 372 s->do_cmd = 0; 373 s->dma_cb = NULL; 374 375 s->rregs[ESP_CFG1] = 7; 376 } 377 378 static void esp_soft_reset(ESPState *s) 379 { 380 qemu_irq_lower(s->irq); 381 esp_hard_reset(s); 382 } 383 384 static void parent_esp_reset(ESPState *s, int irq, int level) 385 { 386 if (level) { 387 esp_soft_reset(s); 388 } 389 } 390 391 uint64_t esp_reg_read(ESPState *s, uint32_t saddr) 392 { 393 uint32_t old_val; 394 395 trace_esp_mem_readb(saddr, s->rregs[saddr]); 396 switch (saddr) { 397 case ESP_FIFO: 398 if (s->ti_size > 0) { 399 s->ti_size--; 400 if ((s->rregs[ESP_RSTAT] & STAT_PIO_MASK) == 0) { 401 /* Data out. */ 402 qemu_log_mask(LOG_UNIMP, 403 "esp: PIO data read not implemented\n"); 404 s->rregs[ESP_FIFO] = 0; 405 } else { 406 s->rregs[ESP_FIFO] = s->ti_buf[s->ti_rptr++]; 407 } 408 esp_raise_irq(s); 409 } 410 if (s->ti_size == 0) { 411 s->ti_rptr = 0; 412 s->ti_wptr = 0; 413 } 414 break; 415 case ESP_RINTR: 416 /* Clear sequence step, interrupt register and all status bits 417 except TC */ 418 old_val = s->rregs[ESP_RINTR]; 419 s->rregs[ESP_RINTR] = 0; 420 s->rregs[ESP_RSTAT] &= ~STAT_TC; 421 s->rregs[ESP_RSEQ] = SEQ_CD; 422 esp_lower_irq(s); 423 424 return old_val; 425 default: 426 break; 427 } 428 return s->rregs[saddr]; 429 } 430 431 void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val) 432 { 433 trace_esp_mem_writeb(saddr, s->wregs[saddr], val); 434 switch (saddr) { 435 case ESP_TCLO: 436 case ESP_TCMID: 437 case ESP_TCHI: 438 s->rregs[ESP_RSTAT] &= ~STAT_TC; 439 break; 440 case ESP_FIFO: 441 if (s->do_cmd) { 442 s->cmdbuf[s->cmdlen++] = val & 0xff; 443 } else if (s->ti_size == TI_BUFSZ - 1) { 444 trace_esp_error_fifo_overrun(); 445 } else { 446 s->ti_size++; 447 s->ti_buf[s->ti_wptr++] = val & 0xff; 448 } 449 break; 450 case ESP_CMD: 451 s->rregs[saddr] = val; 452 if (val & CMD_DMA) { 453 s->dma = 1; 454 /* Reload DMA counter. */ 455 s->rregs[ESP_TCLO] = s->wregs[ESP_TCLO]; 456 s->rregs[ESP_TCMID] = s->wregs[ESP_TCMID]; 457 s->rregs[ESP_TCHI] = s->wregs[ESP_TCHI]; 458 } else { 459 s->dma = 0; 460 } 461 switch(val & CMD_CMD) { 462 case CMD_NOP: 463 trace_esp_mem_writeb_cmd_nop(val); 464 break; 465 case CMD_FLUSH: 466 trace_esp_mem_writeb_cmd_flush(val); 467 //s->ti_size = 0; 468 s->rregs[ESP_RINTR] = INTR_FC; 469 s->rregs[ESP_RSEQ] = 0; 470 s->rregs[ESP_RFLAGS] = 0; 471 break; 472 case CMD_RESET: 473 trace_esp_mem_writeb_cmd_reset(val); 474 esp_soft_reset(s); 475 break; 476 case CMD_BUSRESET: 477 trace_esp_mem_writeb_cmd_bus_reset(val); 478 s->rregs[ESP_RINTR] = INTR_RST; 479 if (!(s->wregs[ESP_CFG1] & CFG1_RESREPT)) { 480 esp_raise_irq(s); 481 } 482 break; 483 case CMD_TI: 484 handle_ti(s); 485 break; 486 case CMD_ICCS: 487 trace_esp_mem_writeb_cmd_iccs(val); 488 write_response(s); 489 s->rregs[ESP_RINTR] = INTR_FC; 490 s->rregs[ESP_RSTAT] |= STAT_MI; 491 break; 492 case CMD_MSGACC: 493 trace_esp_mem_writeb_cmd_msgacc(val); 494 s->rregs[ESP_RINTR] = INTR_DC; 495 s->rregs[ESP_RSEQ] = 0; 496 s->rregs[ESP_RFLAGS] = 0; 497 esp_raise_irq(s); 498 break; 499 case CMD_PAD: 500 trace_esp_mem_writeb_cmd_pad(val); 501 s->rregs[ESP_RSTAT] = STAT_TC; 502 s->rregs[ESP_RINTR] = INTR_FC; 503 s->rregs[ESP_RSEQ] = 0; 504 break; 505 case CMD_SATN: 506 trace_esp_mem_writeb_cmd_satn(val); 507 break; 508 case CMD_RSTATN: 509 trace_esp_mem_writeb_cmd_rstatn(val); 510 break; 511 case CMD_SEL: 512 trace_esp_mem_writeb_cmd_sel(val); 513 handle_s_without_atn(s); 514 break; 515 case CMD_SELATN: 516 trace_esp_mem_writeb_cmd_selatn(val); 517 handle_satn(s); 518 break; 519 case CMD_SELATNS: 520 trace_esp_mem_writeb_cmd_selatns(val); 521 handle_satn_stop(s); 522 break; 523 case CMD_ENSEL: 524 trace_esp_mem_writeb_cmd_ensel(val); 525 s->rregs[ESP_RINTR] = 0; 526 break; 527 case CMD_DISSEL: 528 trace_esp_mem_writeb_cmd_dissel(val); 529 s->rregs[ESP_RINTR] = 0; 530 esp_raise_irq(s); 531 break; 532 default: 533 trace_esp_error_unhandled_command(val); 534 break; 535 } 536 break; 537 case ESP_WBUSID ... ESP_WSYNO: 538 break; 539 case ESP_CFG1: 540 case ESP_CFG2: case ESP_CFG3: 541 case ESP_RES3: case ESP_RES4: 542 s->rregs[saddr] = val; 543 break; 544 case ESP_WCCF ... ESP_WTEST: 545 break; 546 default: 547 trace_esp_error_invalid_write(val, saddr); 548 return; 549 } 550 s->wregs[saddr] = val; 551 } 552 553 static bool esp_mem_accepts(void *opaque, hwaddr addr, 554 unsigned size, bool is_write) 555 { 556 return (size == 1) || (is_write && size == 4); 557 } 558 559 const VMStateDescription vmstate_esp = { 560 .name ="esp", 561 .version_id = 3, 562 .minimum_version_id = 3, 563 .fields = (VMStateField[]) { 564 VMSTATE_BUFFER(rregs, ESPState), 565 VMSTATE_BUFFER(wregs, ESPState), 566 VMSTATE_INT32(ti_size, ESPState), 567 VMSTATE_UINT32(ti_rptr, ESPState), 568 VMSTATE_UINT32(ti_wptr, ESPState), 569 VMSTATE_BUFFER(ti_buf, ESPState), 570 VMSTATE_UINT32(status, ESPState), 571 VMSTATE_UINT32(dma, ESPState), 572 VMSTATE_BUFFER(cmdbuf, ESPState), 573 VMSTATE_UINT32(cmdlen, ESPState), 574 VMSTATE_UINT32(do_cmd, ESPState), 575 VMSTATE_UINT32(dma_left, ESPState), 576 VMSTATE_END_OF_LIST() 577 } 578 }; 579 580 #define TYPE_ESP "esp" 581 #define ESP(obj) OBJECT_CHECK(SysBusESPState, (obj), TYPE_ESP) 582 583 typedef struct { 584 /*< private >*/ 585 SysBusDevice parent_obj; 586 /*< public >*/ 587 588 MemoryRegion iomem; 589 uint32_t it_shift; 590 ESPState esp; 591 } SysBusESPState; 592 593 static void sysbus_esp_mem_write(void *opaque, hwaddr addr, 594 uint64_t val, unsigned int size) 595 { 596 SysBusESPState *sysbus = opaque; 597 uint32_t saddr; 598 599 saddr = addr >> sysbus->it_shift; 600 esp_reg_write(&sysbus->esp, saddr, val); 601 } 602 603 static uint64_t sysbus_esp_mem_read(void *opaque, hwaddr addr, 604 unsigned int size) 605 { 606 SysBusESPState *sysbus = opaque; 607 uint32_t saddr; 608 609 saddr = addr >> sysbus->it_shift; 610 return esp_reg_read(&sysbus->esp, saddr); 611 } 612 613 static const MemoryRegionOps sysbus_esp_mem_ops = { 614 .read = sysbus_esp_mem_read, 615 .write = sysbus_esp_mem_write, 616 .endianness = DEVICE_NATIVE_ENDIAN, 617 .valid.accepts = esp_mem_accepts, 618 }; 619 620 void esp_init(hwaddr espaddr, int it_shift, 621 ESPDMAMemoryReadWriteFunc dma_memory_read, 622 ESPDMAMemoryReadWriteFunc dma_memory_write, 623 void *dma_opaque, qemu_irq irq, qemu_irq *reset, 624 qemu_irq *dma_enable) 625 { 626 DeviceState *dev; 627 SysBusDevice *s; 628 SysBusESPState *sysbus; 629 ESPState *esp; 630 631 dev = qdev_create(NULL, TYPE_ESP); 632 sysbus = ESP(dev); 633 esp = &sysbus->esp; 634 esp->dma_memory_read = dma_memory_read; 635 esp->dma_memory_write = dma_memory_write; 636 esp->dma_opaque = dma_opaque; 637 sysbus->it_shift = it_shift; 638 /* XXX for now until rc4030 has been changed to use DMA enable signal */ 639 esp->dma_enabled = 1; 640 qdev_init_nofail(dev); 641 s = SYS_BUS_DEVICE(dev); 642 sysbus_connect_irq(s, 0, irq); 643 sysbus_mmio_map(s, 0, espaddr); 644 *reset = qdev_get_gpio_in(dev, 0); 645 *dma_enable = qdev_get_gpio_in(dev, 1); 646 } 647 648 static const struct SCSIBusInfo esp_scsi_info = { 649 .tcq = false, 650 .max_target = ESP_MAX_DEVS, 651 .max_lun = 7, 652 653 .transfer_data = esp_transfer_data, 654 .complete = esp_command_complete, 655 .cancel = esp_request_cancelled 656 }; 657 658 static void sysbus_esp_gpio_demux(void *opaque, int irq, int level) 659 { 660 SysBusESPState *sysbus = ESP(opaque); 661 ESPState *s = &sysbus->esp; 662 663 switch (irq) { 664 case 0: 665 parent_esp_reset(s, irq, level); 666 break; 667 case 1: 668 esp_dma_enable(opaque, irq, level); 669 break; 670 } 671 } 672 673 static void sysbus_esp_realize(DeviceState *dev, Error **errp) 674 { 675 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 676 SysBusESPState *sysbus = ESP(dev); 677 ESPState *s = &sysbus->esp; 678 Error *err = NULL; 679 680 sysbus_init_irq(sbd, &s->irq); 681 assert(sysbus->it_shift != -1); 682 683 s->chip_id = TCHI_FAS100A; 684 memory_region_init_io(&sysbus->iomem, OBJECT(sysbus), &sysbus_esp_mem_ops, 685 sysbus, "esp", ESP_REGS << sysbus->it_shift); 686 sysbus_init_mmio(sbd, &sysbus->iomem); 687 688 qdev_init_gpio_in(dev, sysbus_esp_gpio_demux, 2); 689 690 scsi_bus_new(&s->bus, sizeof(s->bus), dev, &esp_scsi_info, NULL); 691 scsi_bus_legacy_handle_cmdline(&s->bus, &err); 692 if (err != NULL) { 693 error_propagate(errp, err); 694 return; 695 } 696 } 697 698 static void sysbus_esp_hard_reset(DeviceState *dev) 699 { 700 SysBusESPState *sysbus = ESP(dev); 701 esp_hard_reset(&sysbus->esp); 702 } 703 704 static const VMStateDescription vmstate_sysbus_esp_scsi = { 705 .name = "sysbusespscsi", 706 .version_id = 0, 707 .minimum_version_id = 0, 708 .fields = (VMStateField[]) { 709 VMSTATE_STRUCT(esp, SysBusESPState, 0, vmstate_esp, ESPState), 710 VMSTATE_END_OF_LIST() 711 } 712 }; 713 714 static void sysbus_esp_class_init(ObjectClass *klass, void *data) 715 { 716 DeviceClass *dc = DEVICE_CLASS(klass); 717 718 dc->realize = sysbus_esp_realize; 719 dc->reset = sysbus_esp_hard_reset; 720 dc->vmsd = &vmstate_sysbus_esp_scsi; 721 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 722 } 723 724 static const TypeInfo sysbus_esp_info = { 725 .name = TYPE_ESP, 726 .parent = TYPE_SYS_BUS_DEVICE, 727 .instance_size = sizeof(SysBusESPState), 728 .class_init = sysbus_esp_class_init, 729 }; 730 731 static void esp_register_types(void) 732 { 733 type_register_static(&sysbus_esp_info); 734 } 735 736 type_init(esp_register_types) 737