parallel.c (20652B)
1 /* 2 * QEMU Parallel PORT emulation 3 * 4 * Copyright (c) 2003-2005 Fabrice Bellard 5 * Copyright (c) 2007 Marko Kohtala 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 "qapi/error.h" 28 #include "qemu/module.h" 29 #include "chardev/char-parallel.h" 30 #include "chardev/char-fe.h" 31 #include "hw/acpi/acpi_aml_interface.h" 32 #include "hw/irq.h" 33 #include "hw/isa/isa.h" 34 #include "hw/qdev-properties.h" 35 #include "hw/qdev-properties-system.h" 36 #include "migration/vmstate.h" 37 #include "hw/char/parallel.h" 38 #include "sysemu/reset.h" 39 #include "sysemu/sysemu.h" 40 #include "trace.h" 41 #include "qom/object.h" 42 43 //#define DEBUG_PARALLEL 44 45 #ifdef DEBUG_PARALLEL 46 #define pdebug(fmt, ...) printf("pp: " fmt, ## __VA_ARGS__) 47 #else 48 #define pdebug(fmt, ...) ((void)0) 49 #endif 50 51 #define PARA_REG_DATA 0 52 #define PARA_REG_STS 1 53 #define PARA_REG_CTR 2 54 #define PARA_REG_EPP_ADDR 3 55 #define PARA_REG_EPP_DATA 4 56 57 /* 58 * These are the definitions for the Printer Status Register 59 */ 60 #define PARA_STS_BUSY 0x80 /* Busy complement */ 61 #define PARA_STS_ACK 0x40 /* Acknowledge */ 62 #define PARA_STS_PAPER 0x20 /* Out of paper */ 63 #define PARA_STS_ONLINE 0x10 /* Online */ 64 #define PARA_STS_ERROR 0x08 /* Error complement */ 65 #define PARA_STS_TMOUT 0x01 /* EPP timeout */ 66 67 /* 68 * These are the definitions for the Printer Control Register 69 */ 70 #define PARA_CTR_DIR 0x20 /* Direction (1=read, 0=write) */ 71 #define PARA_CTR_INTEN 0x10 /* IRQ Enable */ 72 #define PARA_CTR_SELECT 0x08 /* Select In complement */ 73 #define PARA_CTR_INIT 0x04 /* Initialize Printer complement */ 74 #define PARA_CTR_AUTOLF 0x02 /* Auto linefeed complement */ 75 #define PARA_CTR_STROBE 0x01 /* Strobe complement */ 76 77 #define PARA_CTR_SIGNAL (PARA_CTR_SELECT|PARA_CTR_INIT|PARA_CTR_AUTOLF|PARA_CTR_STROBE) 78 79 typedef struct ParallelState { 80 MemoryRegion iomem; 81 uint8_t dataw; 82 uint8_t datar; 83 uint8_t status; 84 uint8_t control; 85 qemu_irq irq; 86 int irq_pending; 87 CharBackend chr; 88 int hw_driver; 89 int epp_timeout; 90 uint32_t last_read_offset; /* For debugging */ 91 /* Memory-mapped interface */ 92 int it_shift; 93 PortioList portio_list; 94 } ParallelState; 95 96 #define TYPE_ISA_PARALLEL "isa-parallel" 97 OBJECT_DECLARE_SIMPLE_TYPE(ISAParallelState, ISA_PARALLEL) 98 99 struct ISAParallelState { 100 ISADevice parent_obj; 101 102 uint32_t index; 103 uint32_t iobase; 104 uint32_t isairq; 105 ParallelState state; 106 }; 107 108 static void parallel_update_irq(ParallelState *s) 109 { 110 if (s->irq_pending) 111 qemu_irq_raise(s->irq); 112 else 113 qemu_irq_lower(s->irq); 114 } 115 116 static void 117 parallel_ioport_write_sw(void *opaque, uint32_t addr, uint32_t val) 118 { 119 ParallelState *s = opaque; 120 121 addr &= 7; 122 trace_parallel_ioport_write("SW", addr, val); 123 switch(addr) { 124 case PARA_REG_DATA: 125 s->dataw = val; 126 parallel_update_irq(s); 127 break; 128 case PARA_REG_CTR: 129 val |= 0xc0; 130 if ((val & PARA_CTR_INIT) == 0 ) { 131 s->status = PARA_STS_BUSY; 132 s->status |= PARA_STS_ACK; 133 s->status |= PARA_STS_ONLINE; 134 s->status |= PARA_STS_ERROR; 135 } 136 else if (val & PARA_CTR_SELECT) { 137 if (val & PARA_CTR_STROBE) { 138 s->status &= ~PARA_STS_BUSY; 139 if ((s->control & PARA_CTR_STROBE) == 0) 140 /* XXX this blocks entire thread. Rewrite to use 141 * qemu_chr_fe_write and background I/O callbacks */ 142 qemu_chr_fe_write_all(&s->chr, &s->dataw, 1); 143 } else { 144 if (s->control & PARA_CTR_INTEN) { 145 s->irq_pending = 1; 146 } 147 } 148 } 149 parallel_update_irq(s); 150 s->control = val; 151 break; 152 } 153 } 154 155 static void parallel_ioport_write_hw(void *opaque, uint32_t addr, uint32_t val) 156 { 157 ParallelState *s = opaque; 158 uint8_t parm = val; 159 int dir; 160 161 /* Sometimes programs do several writes for timing purposes on old 162 HW. Take care not to waste time on writes that do nothing. */ 163 164 s->last_read_offset = ~0U; 165 166 addr &= 7; 167 trace_parallel_ioport_write("HW", addr, val); 168 switch(addr) { 169 case PARA_REG_DATA: 170 if (s->dataw == val) 171 return; 172 pdebug("wd%02x\n", val); 173 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_WRITE_DATA, &parm); 174 s->dataw = val; 175 break; 176 case PARA_REG_STS: 177 pdebug("ws%02x\n", val); 178 if (val & PARA_STS_TMOUT) 179 s->epp_timeout = 0; 180 break; 181 case PARA_REG_CTR: 182 val |= 0xc0; 183 if (s->control == val) 184 return; 185 pdebug("wc%02x\n", val); 186 187 if ((val & PARA_CTR_DIR) != (s->control & PARA_CTR_DIR)) { 188 if (val & PARA_CTR_DIR) { 189 dir = 1; 190 } else { 191 dir = 0; 192 } 193 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_DATA_DIR, &dir); 194 parm &= ~PARA_CTR_DIR; 195 } 196 197 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_WRITE_CONTROL, &parm); 198 s->control = val; 199 break; 200 case PARA_REG_EPP_ADDR: 201 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) 202 /* Controls not correct for EPP address cycle, so do nothing */ 203 pdebug("wa%02x s\n", val); 204 else { 205 struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 }; 206 if (qemu_chr_fe_ioctl(&s->chr, 207 CHR_IOCTL_PP_EPP_WRITE_ADDR, &ioarg)) { 208 s->epp_timeout = 1; 209 pdebug("wa%02x t\n", val); 210 } 211 else 212 pdebug("wa%02x\n", val); 213 } 214 break; 215 case PARA_REG_EPP_DATA: 216 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) 217 /* Controls not correct for EPP data cycle, so do nothing */ 218 pdebug("we%02x s\n", val); 219 else { 220 struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 }; 221 if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg)) { 222 s->epp_timeout = 1; 223 pdebug("we%02x t\n", val); 224 } 225 else 226 pdebug("we%02x\n", val); 227 } 228 break; 229 } 230 } 231 232 static void 233 parallel_ioport_eppdata_write_hw2(void *opaque, uint32_t addr, uint32_t val) 234 { 235 ParallelState *s = opaque; 236 uint16_t eppdata = cpu_to_le16(val); 237 int err; 238 struct ParallelIOArg ioarg = { 239 .buffer = &eppdata, .count = sizeof(eppdata) 240 }; 241 242 trace_parallel_ioport_write("EPP", addr, val); 243 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) { 244 /* Controls not correct for EPP data cycle, so do nothing */ 245 pdebug("we%04x s\n", val); 246 return; 247 } 248 err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg); 249 if (err) { 250 s->epp_timeout = 1; 251 pdebug("we%04x t\n", val); 252 } 253 else 254 pdebug("we%04x\n", val); 255 } 256 257 static void 258 parallel_ioport_eppdata_write_hw4(void *opaque, uint32_t addr, uint32_t val) 259 { 260 ParallelState *s = opaque; 261 uint32_t eppdata = cpu_to_le32(val); 262 int err; 263 struct ParallelIOArg ioarg = { 264 .buffer = &eppdata, .count = sizeof(eppdata) 265 }; 266 267 trace_parallel_ioport_write("EPP", addr, val); 268 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) { 269 /* Controls not correct for EPP data cycle, so do nothing */ 270 pdebug("we%08x s\n", val); 271 return; 272 } 273 err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg); 274 if (err) { 275 s->epp_timeout = 1; 276 pdebug("we%08x t\n", val); 277 } 278 else 279 pdebug("we%08x\n", val); 280 } 281 282 static uint32_t parallel_ioport_read_sw(void *opaque, uint32_t addr) 283 { 284 ParallelState *s = opaque; 285 uint32_t ret = 0xff; 286 287 addr &= 7; 288 switch(addr) { 289 case PARA_REG_DATA: 290 if (s->control & PARA_CTR_DIR) 291 ret = s->datar; 292 else 293 ret = s->dataw; 294 break; 295 case PARA_REG_STS: 296 ret = s->status; 297 s->irq_pending = 0; 298 if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) { 299 /* XXX Fixme: wait 5 microseconds */ 300 if (s->status & PARA_STS_ACK) 301 s->status &= ~PARA_STS_ACK; 302 else { 303 /* XXX Fixme: wait 5 microseconds */ 304 s->status |= PARA_STS_ACK; 305 s->status |= PARA_STS_BUSY; 306 } 307 } 308 parallel_update_irq(s); 309 break; 310 case PARA_REG_CTR: 311 ret = s->control; 312 break; 313 } 314 trace_parallel_ioport_read("SW", addr, ret); 315 return ret; 316 } 317 318 static uint32_t parallel_ioport_read_hw(void *opaque, uint32_t addr) 319 { 320 ParallelState *s = opaque; 321 uint8_t ret = 0xff; 322 addr &= 7; 323 switch(addr) { 324 case PARA_REG_DATA: 325 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_DATA, &ret); 326 if (s->last_read_offset != addr || s->datar != ret) 327 pdebug("rd%02x\n", ret); 328 s->datar = ret; 329 break; 330 case PARA_REG_STS: 331 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_STATUS, &ret); 332 ret &= ~PARA_STS_TMOUT; 333 if (s->epp_timeout) 334 ret |= PARA_STS_TMOUT; 335 if (s->last_read_offset != addr || s->status != ret) 336 pdebug("rs%02x\n", ret); 337 s->status = ret; 338 break; 339 case PARA_REG_CTR: 340 /* s->control has some bits fixed to 1. It is zero only when 341 it has not been yet written to. */ 342 if (s->control == 0) { 343 qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_CONTROL, &ret); 344 if (s->last_read_offset != addr) 345 pdebug("rc%02x\n", ret); 346 s->control = ret; 347 } 348 else { 349 ret = s->control; 350 if (s->last_read_offset != addr) 351 pdebug("rc%02x\n", ret); 352 } 353 break; 354 case PARA_REG_EPP_ADDR: 355 if ((s->control & (PARA_CTR_DIR | PARA_CTR_SIGNAL)) != 356 (PARA_CTR_DIR | PARA_CTR_INIT)) 357 /* Controls not correct for EPP addr cycle, so do nothing */ 358 pdebug("ra%02x s\n", ret); 359 else { 360 struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 }; 361 if (qemu_chr_fe_ioctl(&s->chr, 362 CHR_IOCTL_PP_EPP_READ_ADDR, &ioarg)) { 363 s->epp_timeout = 1; 364 pdebug("ra%02x t\n", ret); 365 } 366 else 367 pdebug("ra%02x\n", ret); 368 } 369 break; 370 case PARA_REG_EPP_DATA: 371 if ((s->control & (PARA_CTR_DIR | PARA_CTR_SIGNAL)) != 372 (PARA_CTR_DIR | PARA_CTR_INIT)) 373 /* Controls not correct for EPP data cycle, so do nothing */ 374 pdebug("re%02x s\n", ret); 375 else { 376 struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 }; 377 if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg)) { 378 s->epp_timeout = 1; 379 pdebug("re%02x t\n", ret); 380 } 381 else 382 pdebug("re%02x\n", ret); 383 } 384 break; 385 } 386 trace_parallel_ioport_read("HW", addr, ret); 387 s->last_read_offset = addr; 388 return ret; 389 } 390 391 static uint32_t 392 parallel_ioport_eppdata_read_hw2(void *opaque, uint32_t addr) 393 { 394 ParallelState *s = opaque; 395 uint32_t ret; 396 uint16_t eppdata = ~0; 397 int err; 398 struct ParallelIOArg ioarg = { 399 .buffer = &eppdata, .count = sizeof(eppdata) 400 }; 401 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) { 402 /* Controls not correct for EPP data cycle, so do nothing */ 403 pdebug("re%04x s\n", eppdata); 404 return eppdata; 405 } 406 err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg); 407 ret = le16_to_cpu(eppdata); 408 409 if (err) { 410 s->epp_timeout = 1; 411 pdebug("re%04x t\n", ret); 412 } 413 else 414 pdebug("re%04x\n", ret); 415 trace_parallel_ioport_read("EPP", addr, ret); 416 return ret; 417 } 418 419 static uint32_t 420 parallel_ioport_eppdata_read_hw4(void *opaque, uint32_t addr) 421 { 422 ParallelState *s = opaque; 423 uint32_t ret; 424 uint32_t eppdata = ~0U; 425 int err; 426 struct ParallelIOArg ioarg = { 427 .buffer = &eppdata, .count = sizeof(eppdata) 428 }; 429 if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) { 430 /* Controls not correct for EPP data cycle, so do nothing */ 431 pdebug("re%08x s\n", eppdata); 432 return eppdata; 433 } 434 err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg); 435 ret = le32_to_cpu(eppdata); 436 437 if (err) { 438 s->epp_timeout = 1; 439 pdebug("re%08x t\n", ret); 440 } 441 else 442 pdebug("re%08x\n", ret); 443 trace_parallel_ioport_read("EPP", addr, ret); 444 return ret; 445 } 446 447 static void parallel_ioport_ecp_write(void *opaque, uint32_t addr, uint32_t val) 448 { 449 trace_parallel_ioport_write("ECP", addr & 7, val); 450 pdebug("wecp%d=%02x\n", addr & 7, val); 451 } 452 453 static uint32_t parallel_ioport_ecp_read(void *opaque, uint32_t addr) 454 { 455 uint8_t ret = 0xff; 456 457 trace_parallel_ioport_read("ECP", addr & 7, ret); 458 pdebug("recp%d:%02x\n", addr & 7, ret); 459 return ret; 460 } 461 462 static void parallel_reset(void *opaque) 463 { 464 ParallelState *s = opaque; 465 466 s->datar = ~0; 467 s->dataw = ~0; 468 s->status = PARA_STS_BUSY; 469 s->status |= PARA_STS_ACK; 470 s->status |= PARA_STS_ONLINE; 471 s->status |= PARA_STS_ERROR; 472 s->status |= PARA_STS_TMOUT; 473 s->control = PARA_CTR_SELECT; 474 s->control |= PARA_CTR_INIT; 475 s->control |= 0xc0; 476 s->irq_pending = 0; 477 s->hw_driver = 0; 478 s->epp_timeout = 0; 479 s->last_read_offset = ~0U; 480 } 481 482 static const int isa_parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; 483 484 static const MemoryRegionPortio isa_parallel_portio_hw_list[] = { 485 { 0, 8, 1, 486 .read = parallel_ioport_read_hw, 487 .write = parallel_ioport_write_hw }, 488 { 4, 1, 2, 489 .read = parallel_ioport_eppdata_read_hw2, 490 .write = parallel_ioport_eppdata_write_hw2 }, 491 { 4, 1, 4, 492 .read = parallel_ioport_eppdata_read_hw4, 493 .write = parallel_ioport_eppdata_write_hw4 }, 494 { 0x400, 8, 1, 495 .read = parallel_ioport_ecp_read, 496 .write = parallel_ioport_ecp_write }, 497 PORTIO_END_OF_LIST(), 498 }; 499 500 static const MemoryRegionPortio isa_parallel_portio_sw_list[] = { 501 { 0, 8, 1, 502 .read = parallel_ioport_read_sw, 503 .write = parallel_ioport_write_sw }, 504 PORTIO_END_OF_LIST(), 505 }; 506 507 508 static const VMStateDescription vmstate_parallel_isa = { 509 .name = "parallel_isa", 510 .version_id = 1, 511 .minimum_version_id = 1, 512 .fields = (VMStateField[]) { 513 VMSTATE_UINT8(state.dataw, ISAParallelState), 514 VMSTATE_UINT8(state.datar, ISAParallelState), 515 VMSTATE_UINT8(state.status, ISAParallelState), 516 VMSTATE_UINT8(state.control, ISAParallelState), 517 VMSTATE_INT32(state.irq_pending, ISAParallelState), 518 VMSTATE_INT32(state.epp_timeout, ISAParallelState), 519 VMSTATE_END_OF_LIST() 520 } 521 }; 522 523 static int parallel_can_receive(void *opaque) 524 { 525 return 1; 526 } 527 528 static void parallel_isa_realizefn(DeviceState *dev, Error **errp) 529 { 530 static int index; 531 ISADevice *isadev = ISA_DEVICE(dev); 532 ISAParallelState *isa = ISA_PARALLEL(dev); 533 ParallelState *s = &isa->state; 534 int base; 535 uint8_t dummy; 536 537 if (!qemu_chr_fe_backend_connected(&s->chr)) { 538 error_setg(errp, "Can't create parallel device, empty char device"); 539 return; 540 } 541 542 if (isa->index == -1) { 543 isa->index = index; 544 } 545 if (isa->index >= MAX_PARALLEL_PORTS) { 546 error_setg(errp, "Max. supported number of parallel ports is %d.", 547 MAX_PARALLEL_PORTS); 548 return; 549 } 550 if (isa->iobase == -1) { 551 isa->iobase = isa_parallel_io[isa->index]; 552 } 553 index++; 554 555 base = isa->iobase; 556 s->irq = isa_get_irq(isadev, isa->isairq); 557 qemu_register_reset(parallel_reset, s); 558 559 qemu_chr_fe_set_handlers(&s->chr, parallel_can_receive, NULL, 560 NULL, NULL, s, NULL, true); 561 if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) { 562 s->hw_driver = 1; 563 s->status = dummy; 564 } 565 566 isa_register_portio_list(isadev, &s->portio_list, base, 567 (s->hw_driver 568 ? &isa_parallel_portio_hw_list[0] 569 : &isa_parallel_portio_sw_list[0]), 570 s, "parallel"); 571 } 572 573 static void parallel_isa_build_aml(AcpiDevAmlIf *adev, Aml *scope) 574 { 575 ISAParallelState *isa = ISA_PARALLEL(adev); 576 Aml *dev; 577 Aml *crs; 578 579 crs = aml_resource_template(); 580 aml_append(crs, aml_io(AML_DECODE16, isa->iobase, isa->iobase, 0x08, 0x08)); 581 aml_append(crs, aml_irq_no_flags(isa->isairq)); 582 583 dev = aml_device("LPT%d", isa->index + 1); 584 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400"))); 585 aml_append(dev, aml_name_decl("_UID", aml_int(isa->index + 1))); 586 aml_append(dev, aml_name_decl("_STA", aml_int(0xf))); 587 aml_append(dev, aml_name_decl("_CRS", crs)); 588 589 aml_append(scope, dev); 590 } 591 592 /* Memory mapped interface */ 593 static uint64_t parallel_mm_readfn(void *opaque, hwaddr addr, unsigned size) 594 { 595 ParallelState *s = opaque; 596 597 return parallel_ioport_read_sw(s, addr >> s->it_shift) & 598 MAKE_64BIT_MASK(0, size * 8); 599 } 600 601 static void parallel_mm_writefn(void *opaque, hwaddr addr, 602 uint64_t value, unsigned size) 603 { 604 ParallelState *s = opaque; 605 606 parallel_ioport_write_sw(s, addr >> s->it_shift, 607 value & MAKE_64BIT_MASK(0, size * 8)); 608 } 609 610 static const MemoryRegionOps parallel_mm_ops = { 611 .read = parallel_mm_readfn, 612 .write = parallel_mm_writefn, 613 .valid.min_access_size = 1, 614 .valid.max_access_size = 4, 615 .endianness = DEVICE_NATIVE_ENDIAN, 616 }; 617 618 /* If fd is zero, it means that the parallel device uses the console */ 619 bool parallel_mm_init(MemoryRegion *address_space, 620 hwaddr base, int it_shift, qemu_irq irq, 621 Chardev *chr) 622 { 623 ParallelState *s; 624 625 s = g_new0(ParallelState, 1); 626 s->irq = irq; 627 qemu_chr_fe_init(&s->chr, chr, &error_abort); 628 s->it_shift = it_shift; 629 qemu_register_reset(parallel_reset, s); 630 631 memory_region_init_io(&s->iomem, NULL, ¶llel_mm_ops, s, 632 "parallel", 8 << it_shift); 633 memory_region_add_subregion(address_space, base, &s->iomem); 634 return true; 635 } 636 637 static Property parallel_isa_properties[] = { 638 DEFINE_PROP_UINT32("index", ISAParallelState, index, -1), 639 DEFINE_PROP_UINT32("iobase", ISAParallelState, iobase, -1), 640 DEFINE_PROP_UINT32("irq", ISAParallelState, isairq, 7), 641 DEFINE_PROP_CHR("chardev", ISAParallelState, state.chr), 642 DEFINE_PROP_END_OF_LIST(), 643 }; 644 645 static void parallel_isa_class_initfn(ObjectClass *klass, void *data) 646 { 647 DeviceClass *dc = DEVICE_CLASS(klass); 648 AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass); 649 650 dc->realize = parallel_isa_realizefn; 651 dc->vmsd = &vmstate_parallel_isa; 652 adevc->build_dev_aml = parallel_isa_build_aml; 653 device_class_set_props(dc, parallel_isa_properties); 654 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 655 } 656 657 static const TypeInfo parallel_isa_info = { 658 .name = TYPE_ISA_PARALLEL, 659 .parent = TYPE_ISA_DEVICE, 660 .instance_size = sizeof(ISAParallelState), 661 .class_init = parallel_isa_class_initfn, 662 .interfaces = (InterfaceInfo[]) { 663 { TYPE_ACPI_DEV_AML_IF }, 664 { }, 665 }, 666 }; 667 668 static void parallel_register_types(void) 669 { 670 type_register_static(¶llel_isa_info); 671 } 672 673 type_init(parallel_register_types)