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