1 /* 2 * SMSC 91C111 Ethernet interface emulation 3 * 4 * Copyright (c) 2005 CodeSourcery, LLC. 5 * Written by Paul Brook 6 * 7 * This code is licensed under the GPL 8 */ 9 10 #include "qemu/osdep.h" 11 #include "hw/sysbus.h" 12 #include "migration/vmstate.h" 13 #include "net/net.h" 14 #include "hw/irq.h" 15 #include "hw/net/smc91c111.h" 16 #include "hw/qdev-properties.h" 17 #include "qapi/error.h" 18 #include "qemu/log.h" 19 #include "qemu/module.h" 20 /* For crc32 */ 21 #include <zlib.h> 22 #include "qom/object.h" 23 24 /* Number of 2k memory pages available. */ 25 #define NUM_PACKETS 4 26 27 #define TYPE_SMC91C111 "smc91c111" 28 OBJECT_DECLARE_SIMPLE_TYPE(smc91c111_state, SMC91C111) 29 30 struct smc91c111_state { 31 SysBusDevice parent_obj; 32 33 NICState *nic; 34 NICConf conf; 35 uint16_t tcr; 36 uint16_t rcr; 37 uint16_t cr; 38 uint16_t ctr; 39 uint16_t gpr; 40 uint16_t ptr; 41 uint16_t ercv; 42 qemu_irq irq; 43 int bank; 44 int packet_num; 45 int tx_alloc; 46 /* Bitmask of allocated packets. */ 47 int allocated; 48 int tx_fifo_len; 49 int tx_fifo[NUM_PACKETS]; 50 int rx_fifo_len; 51 int rx_fifo[NUM_PACKETS]; 52 int tx_fifo_done_len; 53 int tx_fifo_done[NUM_PACKETS]; 54 /* Packet buffer memory. */ 55 uint8_t data[NUM_PACKETS][2048]; 56 uint8_t int_level; 57 uint8_t int_mask; 58 MemoryRegion mmio; 59 }; 60 61 static const VMStateDescription vmstate_smc91c111 = { 62 .name = "smc91c111", 63 .version_id = 1, 64 .minimum_version_id = 1, 65 .fields = (const VMStateField[]) { 66 VMSTATE_UINT16(tcr, smc91c111_state), 67 VMSTATE_UINT16(rcr, smc91c111_state), 68 VMSTATE_UINT16(cr, smc91c111_state), 69 VMSTATE_UINT16(ctr, smc91c111_state), 70 VMSTATE_UINT16(gpr, smc91c111_state), 71 VMSTATE_UINT16(ptr, smc91c111_state), 72 VMSTATE_UINT16(ercv, smc91c111_state), 73 VMSTATE_INT32(bank, smc91c111_state), 74 VMSTATE_INT32(packet_num, smc91c111_state), 75 VMSTATE_INT32(tx_alloc, smc91c111_state), 76 VMSTATE_INT32(allocated, smc91c111_state), 77 VMSTATE_INT32(tx_fifo_len, smc91c111_state), 78 VMSTATE_INT32_ARRAY(tx_fifo, smc91c111_state, NUM_PACKETS), 79 VMSTATE_INT32(rx_fifo_len, smc91c111_state), 80 VMSTATE_INT32_ARRAY(rx_fifo, smc91c111_state, NUM_PACKETS), 81 VMSTATE_INT32(tx_fifo_done_len, smc91c111_state), 82 VMSTATE_INT32_ARRAY(tx_fifo_done, smc91c111_state, NUM_PACKETS), 83 VMSTATE_BUFFER_UNSAFE(data, smc91c111_state, 0, NUM_PACKETS * 2048), 84 VMSTATE_UINT8(int_level, smc91c111_state), 85 VMSTATE_UINT8(int_mask, smc91c111_state), 86 VMSTATE_END_OF_LIST() 87 } 88 }; 89 90 #define RCR_SOFT_RST 0x8000 91 #define RCR_STRIP_CRC 0x0200 92 #define RCR_RXEN 0x0100 93 94 #define TCR_EPH_LOOP 0x2000 95 #define TCR_NOCRC 0x0100 96 #define TCR_PAD_EN 0x0080 97 #define TCR_FORCOL 0x0004 98 #define TCR_LOOP 0x0002 99 #define TCR_TXEN 0x0001 100 101 #define INT_MD 0x80 102 #define INT_ERCV 0x40 103 #define INT_EPH 0x20 104 #define INT_RX_OVRN 0x10 105 #define INT_ALLOC 0x08 106 #define INT_TX_EMPTY 0x04 107 #define INT_TX 0x02 108 #define INT_RCV 0x01 109 110 #define CTR_AUTO_RELEASE 0x0800 111 #define CTR_RELOAD 0x0002 112 #define CTR_STORE 0x0001 113 114 #define RS_ALGNERR 0x8000 115 #define RS_BRODCAST 0x4000 116 #define RS_BADCRC 0x2000 117 #define RS_ODDFRAME 0x1000 118 #define RS_TOOLONG 0x0800 119 #define RS_TOOSHORT 0x0400 120 #define RS_MULTICAST 0x0001 121 122 /* Update interrupt status. */ 123 static void smc91c111_update(smc91c111_state *s) 124 { 125 int level; 126 127 if (s->tx_fifo_len == 0) 128 s->int_level |= INT_TX_EMPTY; 129 if (s->tx_fifo_done_len != 0) 130 s->int_level |= INT_TX; 131 level = (s->int_level & s->int_mask) != 0; 132 qemu_set_irq(s->irq, level); 133 } 134 135 static bool smc91c111_can_receive(smc91c111_state *s) 136 { 137 if ((s->rcr & RCR_RXEN) == 0 || (s->rcr & RCR_SOFT_RST)) { 138 return true; 139 } 140 if (s->allocated == (1 << NUM_PACKETS) - 1 || 141 s->rx_fifo_len == NUM_PACKETS) { 142 return false; 143 } 144 return true; 145 } 146 147 static inline void smc91c111_flush_queued_packets(smc91c111_state *s) 148 { 149 if (smc91c111_can_receive(s)) { 150 qemu_flush_queued_packets(qemu_get_queue(s->nic)); 151 } 152 } 153 154 /* Try to allocate a packet. Returns 0x80 on failure. */ 155 static int smc91c111_allocate_packet(smc91c111_state *s) 156 { 157 int i; 158 if (s->allocated == (1 << NUM_PACKETS) - 1) { 159 return 0x80; 160 } 161 162 for (i = 0; i < NUM_PACKETS; i++) { 163 if ((s->allocated & (1 << i)) == 0) 164 break; 165 } 166 s->allocated |= 1 << i; 167 return i; 168 } 169 170 171 /* Process a pending TX allocate. */ 172 static void smc91c111_tx_alloc(smc91c111_state *s) 173 { 174 s->tx_alloc = smc91c111_allocate_packet(s); 175 if (s->tx_alloc == 0x80) 176 return; 177 s->int_level |= INT_ALLOC; 178 smc91c111_update(s); 179 } 180 181 /* Remove and item from the RX FIFO. */ 182 static void smc91c111_pop_rx_fifo(smc91c111_state *s) 183 { 184 int i; 185 186 s->rx_fifo_len--; 187 if (s->rx_fifo_len) { 188 for (i = 0; i < s->rx_fifo_len; i++) 189 s->rx_fifo[i] = s->rx_fifo[i + 1]; 190 s->int_level |= INT_RCV; 191 } else { 192 s->int_level &= ~INT_RCV; 193 } 194 smc91c111_flush_queued_packets(s); 195 smc91c111_update(s); 196 } 197 198 /* Remove an item from the TX completion FIFO. */ 199 static void smc91c111_pop_tx_fifo_done(smc91c111_state *s) 200 { 201 int i; 202 203 if (s->tx_fifo_done_len == 0) 204 return; 205 s->tx_fifo_done_len--; 206 for (i = 0; i < s->tx_fifo_done_len; i++) 207 s->tx_fifo_done[i] = s->tx_fifo_done[i + 1]; 208 } 209 210 /* Release the memory allocated to a packet. */ 211 static void smc91c111_release_packet(smc91c111_state *s, int packet) 212 { 213 s->allocated &= ~(1 << packet); 214 if (s->tx_alloc == 0x80) 215 smc91c111_tx_alloc(s); 216 smc91c111_flush_queued_packets(s); 217 } 218 219 /* Flush the TX FIFO. */ 220 static void smc91c111_do_tx(smc91c111_state *s) 221 { 222 int i; 223 int len; 224 int control; 225 int packetnum; 226 uint8_t *p; 227 228 if ((s->tcr & TCR_TXEN) == 0) 229 return; 230 if (s->tx_fifo_len == 0) 231 return; 232 for (i = 0; i < s->tx_fifo_len; i++) { 233 packetnum = s->tx_fifo[i]; 234 p = &s->data[packetnum][0]; 235 /* Set status word. */ 236 *(p++) = 0x01; 237 *(p++) = 0x40; 238 len = *(p++); 239 len |= ((int)*(p++)) << 8; 240 len -= 6; 241 control = p[len + 1]; 242 if (control & 0x20) 243 len++; 244 /* ??? This overwrites the data following the buffer. 245 Don't know what real hardware does. */ 246 if (len < 64 && (s->tcr & TCR_PAD_EN)) { 247 memset(p + len, 0, 64 - len); 248 len = 64; 249 } 250 #if 0 251 { 252 int add_crc; 253 254 /* The card is supposed to append the CRC to the frame. 255 However none of the other network traffic has the CRC 256 appended. Suspect this is low level ethernet detail we 257 don't need to worry about. */ 258 add_crc = (control & 0x10) || (s->tcr & TCR_NOCRC) == 0; 259 if (add_crc) { 260 uint32_t crc; 261 262 crc = crc32(~0, p, len); 263 memcpy(p + len, &crc, 4); 264 len += 4; 265 } 266 } 267 #endif 268 if (s->ctr & CTR_AUTO_RELEASE) 269 /* Race? */ 270 smc91c111_release_packet(s, packetnum); 271 else if (s->tx_fifo_done_len < NUM_PACKETS) 272 s->tx_fifo_done[s->tx_fifo_done_len++] = packetnum; 273 qemu_send_packet(qemu_get_queue(s->nic), p, len); 274 } 275 s->tx_fifo_len = 0; 276 smc91c111_update(s); 277 } 278 279 /* Add a packet to the TX FIFO. */ 280 static void smc91c111_queue_tx(smc91c111_state *s, int packet) 281 { 282 if (s->tx_fifo_len == NUM_PACKETS) 283 return; 284 s->tx_fifo[s->tx_fifo_len++] = packet; 285 smc91c111_do_tx(s); 286 } 287 288 static void smc91c111_reset(DeviceState *dev) 289 { 290 smc91c111_state *s = SMC91C111(dev); 291 292 s->bank = 0; 293 s->tx_fifo_len = 0; 294 s->tx_fifo_done_len = 0; 295 s->rx_fifo_len = 0; 296 s->allocated = 0; 297 s->packet_num = 0; 298 s->tx_alloc = 0; 299 s->tcr = 0; 300 s->rcr = 0; 301 s->cr = 0xa0b1; 302 s->ctr = 0x1210; 303 s->ptr = 0; 304 s->ercv = 0x1f; 305 s->int_level = INT_TX_EMPTY; 306 s->int_mask = 0; 307 smc91c111_update(s); 308 } 309 310 #define SET_LOW(name, val) s->name = (s->name & 0xff00) | val 311 #define SET_HIGH(name, val) s->name = (s->name & 0xff) | (val << 8) 312 313 static void smc91c111_writeb(void *opaque, hwaddr offset, 314 uint32_t value) 315 { 316 smc91c111_state *s = (smc91c111_state *)opaque; 317 318 offset = offset & 0xf; 319 if (offset == 14) { 320 s->bank = value; 321 return; 322 } 323 if (offset == 15) 324 return; 325 switch (s->bank) { 326 case 0: 327 switch (offset) { 328 case 0: /* TCR */ 329 SET_LOW(tcr, value); 330 return; 331 case 1: 332 SET_HIGH(tcr, value); 333 return; 334 case 4: /* RCR */ 335 SET_LOW(rcr, value); 336 return; 337 case 5: 338 SET_HIGH(rcr, value); 339 if (s->rcr & RCR_SOFT_RST) { 340 smc91c111_reset(DEVICE(s)); 341 } 342 smc91c111_flush_queued_packets(s); 343 return; 344 case 10: case 11: /* RPCR */ 345 /* Ignored */ 346 return; 347 case 12: case 13: /* Reserved */ 348 return; 349 } 350 break; 351 352 case 1: 353 switch (offset) { 354 case 0: /* CONFIG */ 355 SET_LOW(cr, value); 356 return; 357 case 1: 358 SET_HIGH(cr,value); 359 return; 360 case 2: case 3: /* BASE */ 361 case 4: case 5: case 6: case 7: case 8: case 9: /* IA */ 362 /* Not implemented. */ 363 return; 364 case 10: /* General Purpose */ 365 SET_LOW(gpr, value); 366 return; 367 case 11: 368 SET_HIGH(gpr, value); 369 return; 370 case 12: /* Control */ 371 if (value & 1) { 372 qemu_log_mask(LOG_UNIMP, 373 "smc91c111: EEPROM store not implemented\n"); 374 } 375 if (value & 2) { 376 qemu_log_mask(LOG_UNIMP, 377 "smc91c111: EEPROM reload not implemented\n"); 378 } 379 value &= ~3; 380 SET_LOW(ctr, value); 381 return; 382 case 13: 383 SET_HIGH(ctr, value); 384 return; 385 } 386 break; 387 388 case 2: 389 switch (offset) { 390 case 0: /* MMU Command */ 391 switch (value >> 5) { 392 case 0: /* no-op */ 393 break; 394 case 1: /* Allocate for TX. */ 395 s->tx_alloc = 0x80; 396 s->int_level &= ~INT_ALLOC; 397 smc91c111_update(s); 398 smc91c111_tx_alloc(s); 399 break; 400 case 2: /* Reset MMU. */ 401 s->allocated = 0; 402 s->tx_fifo_len = 0; 403 s->tx_fifo_done_len = 0; 404 s->rx_fifo_len = 0; 405 s->tx_alloc = 0; 406 break; 407 case 3: /* Remove from RX FIFO. */ 408 smc91c111_pop_rx_fifo(s); 409 break; 410 case 4: /* Remove from RX FIFO and release. */ 411 if (s->rx_fifo_len > 0) { 412 smc91c111_release_packet(s, s->rx_fifo[0]); 413 } 414 smc91c111_pop_rx_fifo(s); 415 break; 416 case 5: /* Release. */ 417 smc91c111_release_packet(s, s->packet_num); 418 break; 419 case 6: /* Add to TX FIFO. */ 420 smc91c111_queue_tx(s, s->packet_num); 421 break; 422 case 7: /* Reset TX FIFO. */ 423 s->tx_fifo_len = 0; 424 s->tx_fifo_done_len = 0; 425 break; 426 } 427 return; 428 case 1: 429 /* Ignore. */ 430 return; 431 case 2: /* Packet Number Register */ 432 s->packet_num = value; 433 return; 434 case 3: case 4: case 5: 435 /* Should be readonly, but linux writes to them anyway. Ignore. */ 436 return; 437 case 6: /* Pointer */ 438 SET_LOW(ptr, value); 439 return; 440 case 7: 441 SET_HIGH(ptr, value); 442 return; 443 case 8: case 9: case 10: case 11: /* Data */ 444 { 445 int p; 446 int n; 447 448 if (s->ptr & 0x8000) 449 n = s->rx_fifo[0]; 450 else 451 n = s->packet_num; 452 p = s->ptr & 0x07ff; 453 if (s->ptr & 0x4000) { 454 s->ptr = (s->ptr & 0xf800) | ((s->ptr + 1) & 0x7ff); 455 } else { 456 p += (offset & 3); 457 } 458 s->data[n][p] = value; 459 } 460 return; 461 case 12: /* Interrupt ACK. */ 462 s->int_level &= ~(value & 0xd6); 463 if (value & INT_TX) 464 smc91c111_pop_tx_fifo_done(s); 465 smc91c111_update(s); 466 return; 467 case 13: /* Interrupt mask. */ 468 s->int_mask = value; 469 smc91c111_update(s); 470 return; 471 } 472 break; 473 474 case 3: 475 switch (offset) { 476 case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: 477 /* Multicast table. */ 478 /* Not implemented. */ 479 return; 480 case 8: case 9: /* Management Interface. */ 481 /* Not implemented. */ 482 return; 483 case 12: /* Early receive. */ 484 s->ercv = value & 0x1f; 485 return; 486 case 13: 487 /* Ignore. */ 488 return; 489 } 490 break; 491 } 492 qemu_log_mask(LOG_GUEST_ERROR, "smc91c111_write(bank:%d) Illegal register" 493 " 0x%" HWADDR_PRIx " = 0x%x\n", 494 s->bank, offset, value); 495 } 496 497 static uint32_t smc91c111_readb(void *opaque, hwaddr offset) 498 { 499 smc91c111_state *s = (smc91c111_state *)opaque; 500 501 offset = offset & 0xf; 502 if (offset == 14) { 503 return s->bank; 504 } 505 if (offset == 15) 506 return 0x33; 507 switch (s->bank) { 508 case 0: 509 switch (offset) { 510 case 0: /* TCR */ 511 return s->tcr & 0xff; 512 case 1: 513 return s->tcr >> 8; 514 case 2: /* EPH Status */ 515 return 0; 516 case 3: 517 return 0x40; 518 case 4: /* RCR */ 519 return s->rcr & 0xff; 520 case 5: 521 return s->rcr >> 8; 522 case 6: /* Counter */ 523 case 7: 524 /* Not implemented. */ 525 return 0; 526 case 8: /* Memory size. */ 527 return NUM_PACKETS; 528 case 9: /* Free memory available. */ 529 { 530 int i; 531 int n; 532 n = 0; 533 for (i = 0; i < NUM_PACKETS; i++) { 534 if (s->allocated & (1 << i)) 535 n++; 536 } 537 return n; 538 } 539 case 10: case 11: /* RPCR */ 540 /* Not implemented. */ 541 return 0; 542 case 12: case 13: /* Reserved */ 543 return 0; 544 } 545 break; 546 547 case 1: 548 switch (offset) { 549 case 0: /* CONFIG */ 550 return s->cr & 0xff; 551 case 1: 552 return s->cr >> 8; 553 case 2: case 3: /* BASE */ 554 /* Not implemented. */ 555 return 0; 556 case 4: case 5: case 6: case 7: case 8: case 9: /* IA */ 557 return s->conf.macaddr.a[offset - 4]; 558 case 10: /* General Purpose */ 559 return s->gpr & 0xff; 560 case 11: 561 return s->gpr >> 8; 562 case 12: /* Control */ 563 return s->ctr & 0xff; 564 case 13: 565 return s->ctr >> 8; 566 } 567 break; 568 569 case 2: 570 switch (offset) { 571 case 0: case 1: /* MMUCR Busy bit. */ 572 return 0; 573 case 2: /* Packet Number. */ 574 return s->packet_num; 575 case 3: /* Allocation Result. */ 576 return s->tx_alloc; 577 case 4: /* TX FIFO */ 578 if (s->tx_fifo_done_len == 0) 579 return 0x80; 580 else 581 return s->tx_fifo_done[0]; 582 case 5: /* RX FIFO */ 583 if (s->rx_fifo_len == 0) 584 return 0x80; 585 else 586 return s->rx_fifo[0]; 587 case 6: /* Pointer */ 588 return s->ptr & 0xff; 589 case 7: 590 return (s->ptr >> 8) & 0xf7; 591 case 8: case 9: case 10: case 11: /* Data */ 592 { 593 int p; 594 int n; 595 596 if (s->ptr & 0x8000) 597 n = s->rx_fifo[0]; 598 else 599 n = s->packet_num; 600 p = s->ptr & 0x07ff; 601 if (s->ptr & 0x4000) { 602 s->ptr = (s->ptr & 0xf800) | ((s->ptr + 1) & 0x07ff); 603 } else { 604 p += (offset & 3); 605 } 606 return s->data[n][p]; 607 } 608 case 12: /* Interrupt status. */ 609 return s->int_level; 610 case 13: /* Interrupt mask. */ 611 return s->int_mask; 612 } 613 break; 614 615 case 3: 616 switch (offset) { 617 case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: 618 /* Multicast table. */ 619 /* Not implemented. */ 620 return 0; 621 case 8: /* Management Interface. */ 622 /* Not implemented. */ 623 return 0x30; 624 case 9: 625 return 0x33; 626 case 10: /* Revision. */ 627 return 0x91; 628 case 11: 629 return 0x33; 630 case 12: 631 return s->ercv; 632 case 13: 633 return 0; 634 } 635 break; 636 } 637 qemu_log_mask(LOG_GUEST_ERROR, "smc91c111_read(bank:%d) Illegal register" 638 " 0x%" HWADDR_PRIx "\n", 639 s->bank, offset); 640 return 0; 641 } 642 643 static uint64_t smc91c111_readfn(void *opaque, hwaddr addr, unsigned size) 644 { 645 int i; 646 uint32_t val = 0; 647 648 for (i = 0; i < size; i++) { 649 val |= smc91c111_readb(opaque, addr + i) << (i * 8); 650 } 651 return val; 652 } 653 654 static void smc91c111_writefn(void *opaque, hwaddr addr, 655 uint64_t value, unsigned size) 656 { 657 int i = 0; 658 659 /* 32-bit writes to offset 0xc only actually write to the bank select 660 * register (offset 0xe), so skip the first two bytes we would write. 661 */ 662 if (addr == 0xc && size == 4) { 663 i += 2; 664 } 665 666 for (; i < size; i++) { 667 smc91c111_writeb(opaque, addr + i, 668 extract32(value, i * 8, 8)); 669 } 670 } 671 672 static bool smc91c111_can_receive_nc(NetClientState *nc) 673 { 674 smc91c111_state *s = qemu_get_nic_opaque(nc); 675 676 return smc91c111_can_receive(s); 677 } 678 679 static ssize_t smc91c111_receive(NetClientState *nc, const uint8_t *buf, size_t size) 680 { 681 smc91c111_state *s = qemu_get_nic_opaque(nc); 682 int status; 683 int packetsize; 684 uint32_t crc; 685 int packetnum; 686 uint8_t *p; 687 688 if ((s->rcr & RCR_RXEN) == 0 || (s->rcr & RCR_SOFT_RST)) 689 return -1; 690 /* Short packets are padded with zeros. Receiving a packet 691 < 64 bytes long is considered an error condition. */ 692 if (size < 64) 693 packetsize = 64; 694 else 695 packetsize = (size & ~1); 696 packetsize += 6; 697 crc = (s->rcr & RCR_STRIP_CRC) == 0; 698 if (crc) 699 packetsize += 4; 700 /* TODO: Flag overrun and receive errors. */ 701 if (packetsize > 2048) 702 return -1; 703 packetnum = smc91c111_allocate_packet(s); 704 if (packetnum == 0x80) 705 return -1; 706 s->rx_fifo[s->rx_fifo_len++] = packetnum; 707 708 p = &s->data[packetnum][0]; 709 /* ??? Multicast packets? */ 710 status = 0; 711 if (size > 1518) 712 status |= RS_TOOLONG; 713 if (size & 1) 714 status |= RS_ODDFRAME; 715 *(p++) = status & 0xff; 716 *(p++) = status >> 8; 717 *(p++) = packetsize & 0xff; 718 *(p++) = packetsize >> 8; 719 memcpy(p, buf, size & ~1); 720 p += (size & ~1); 721 /* Pad short packets. */ 722 if (size < 64) { 723 int pad; 724 725 if (size & 1) 726 *(p++) = buf[size - 1]; 727 pad = 64 - size; 728 memset(p, 0, pad); 729 p += pad; 730 size = 64; 731 } 732 /* It's not clear if the CRC should go before or after the last byte in 733 odd sized packets. Linux disables the CRC, so that's no help. 734 The pictures in the documentation show the CRC aligned on a 16-bit 735 boundary before the last odd byte, so that's what we do. */ 736 if (crc) { 737 crc = crc32(~0, buf, size); 738 *(p++) = crc & 0xff; crc >>= 8; 739 *(p++) = crc & 0xff; crc >>= 8; 740 *(p++) = crc & 0xff; crc >>= 8; 741 *(p++) = crc & 0xff; 742 } 743 if (size & 1) { 744 *(p++) = buf[size - 1]; 745 *p = 0x60; 746 } else { 747 *(p++) = 0; 748 *p = 0x40; 749 } 750 /* TODO: Raise early RX interrupt? */ 751 s->int_level |= INT_RCV; 752 smc91c111_update(s); 753 754 return size; 755 } 756 757 static const MemoryRegionOps smc91c111_mem_ops = { 758 /* The special case for 32 bit writes to 0xc means we can't just 759 * set .impl.min/max_access_size to 1, unfortunately 760 */ 761 .read = smc91c111_readfn, 762 .write = smc91c111_writefn, 763 .valid.min_access_size = 1, 764 .valid.max_access_size = 4, 765 .endianness = DEVICE_NATIVE_ENDIAN, 766 }; 767 768 static NetClientInfo net_smc91c111_info = { 769 .type = NET_CLIENT_DRIVER_NIC, 770 .size = sizeof(NICState), 771 .can_receive = smc91c111_can_receive_nc, 772 .receive = smc91c111_receive, 773 }; 774 775 static void smc91c111_realize(DeviceState *dev, Error **errp) 776 { 777 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 778 smc91c111_state *s = SMC91C111(dev); 779 780 memory_region_init_io(&s->mmio, OBJECT(s), &smc91c111_mem_ops, s, 781 "smc91c111-mmio", 16); 782 sysbus_init_mmio(sbd, &s->mmio); 783 sysbus_init_irq(sbd, &s->irq); 784 qemu_macaddr_default_if_unset(&s->conf.macaddr); 785 s->nic = qemu_new_nic(&net_smc91c111_info, &s->conf, 786 object_get_typename(OBJECT(dev)), dev->id, 787 &dev->mem_reentrancy_guard, s); 788 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); 789 /* ??? Save/restore. */ 790 } 791 792 static Property smc91c111_properties[] = { 793 DEFINE_NIC_PROPERTIES(smc91c111_state, conf), 794 DEFINE_PROP_END_OF_LIST(), 795 }; 796 797 static void smc91c111_class_init(ObjectClass *klass, void *data) 798 { 799 DeviceClass *dc = DEVICE_CLASS(klass); 800 801 dc->realize = smc91c111_realize; 802 dc->reset = smc91c111_reset; 803 dc->vmsd = &vmstate_smc91c111; 804 device_class_set_props(dc, smc91c111_properties); 805 } 806 807 static const TypeInfo smc91c111_info = { 808 .name = TYPE_SMC91C111, 809 .parent = TYPE_SYS_BUS_DEVICE, 810 .instance_size = sizeof(smc91c111_state), 811 .class_init = smc91c111_class_init, 812 }; 813 814 static void smc91c111_register_types(void) 815 { 816 type_register_static(&smc91c111_info); 817 } 818 819 /* Legacy helper function. Should go away when machine config files are 820 implemented. */ 821 void smc91c111_init(uint32_t base, qemu_irq irq) 822 { 823 DeviceState *dev; 824 SysBusDevice *s; 825 826 dev = qdev_new(TYPE_SMC91C111); 827 qemu_configure_nic_device(dev, true, NULL); 828 s = SYS_BUS_DEVICE(dev); 829 sysbus_realize_and_unref(s, &error_fatal); 830 sysbus_mmio_map(s, 0, base); 831 sysbus_connect_irq(s, 0, irq); 832 } 833 834 type_init(smc91c111_register_types) 835