hw/ne2000.c

   1 /*
   2  * QEMU NE2000 emulation
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw.h"
  25 #include "pci/pci.h"
  26 #include "net/net.h"
  27 #include "ne2000.h"
  28 #include "loader.h"
  29 #include "sysemu/sysemu.h"
  30
  31 /* debug NE2000 card */
  32 //#define DEBUG_NE2000
  33
  34 #define MAX_ETH_FRAME_SIZE 1514
  35
  36 #define E8390_CMD       0x00  /* The command register (for all pages) */
  37 /* Page 0 register offsets. */
  38 #define EN0_CLDALO      0x01    /* Low byte of current local dma addr  RD */
  39 #define EN0_STARTPG     0x01    /* Starting page of ring bfr WR */
  40 #define EN0_CLDAHI      0x02    /* High byte of current local dma addr  RD */
  41 #define EN0_STOPPG      0x02    /* Ending page +1 of ring bfr WR */
  42 #define EN0_BOUNDARY    0x03    /* Boundary page of ring bfr RD WR */
  43 #define EN0_TSR         0x04    /* Transmit status reg RD */
  44 #define EN0_TPSR        0x04    /* Transmit starting page WR */
  45 #define EN0_NCR         0x05    /* Number of collision reg RD */
  46 #define EN0_TCNTLO      0x05    /* Low  byte of tx byte count WR */
  47 #define EN0_FIFO        0x06    /* FIFO RD */
  48 #define EN0_TCNTHI      0x06    /* High byte of tx byte count WR */
  49 #define EN0_ISR         0x07    /* Interrupt status reg RD WR */
  50 #define EN0_CRDALO      0x08    /* low byte of current remote dma address RD */
  51 #define EN0_RSARLO      0x08    /* Remote start address reg 0 */
  52 #define EN0_CRDAHI      0x09    /* high byte, current remote dma address RD */
  53 #define EN0_RSARHI      0x09    /* Remote start address reg 1 */
  54 #define EN0_RCNTLO      0x0a    /* Remote byte count reg WR */
  55 #define EN0_RTL8029ID0  0x0a    /* Realtek ID byte #1 RD */
  56 #define EN0_RCNTHI      0x0b    /* Remote byte count reg WR */
  57 #define EN0_RTL8029ID1  0x0b    /* Realtek ID byte #2 RD */
  58 #define EN0_RSR         0x0c    /* rx status reg RD */
  59 #define EN0_RXCR        0x0c    /* RX configuration reg WR */
  60 #define EN0_TXCR        0x0d    /* TX configuration reg WR */
  61 #define EN0_COUNTER0    0x0d    /* Rcv alignment error counter RD */
  62 #define EN0_DCFG        0x0e    /* Data configuration reg WR */
  63 #define EN0_COUNTER1    0x0e    /* Rcv CRC error counter RD */
  64 #define EN0_IMR         0x0f    /* Interrupt mask reg WR */
  65 #define EN0_COUNTER2    0x0f    /* Rcv missed frame error counter RD */
  66
  67 #define EN1_PHYS        0x11
  68 #define EN1_CURPAG      0x17
  69 #define EN1_MULT        0x18
  70
  71 #define EN2_STARTPG     0x21    /* Starting page of ring bfr RD */
  72 #define EN2_STOPPG      0x22    /* Ending page +1 of ring bfr RD */
  73
  74 #define EN3_CONFIG0     0x33
  75 #define EN3_CONFIG1     0x34
  76 #define EN3_CONFIG2     0x35
  77 #define EN3_CONFIG3     0x36
  78
  79 /*  Register accessed at EN_CMD, the 8390 base addr.  */
  80 #define E8390_STOP      0x01    /* Stop and reset the chip */
  81 #define E8390_START     0x02    /* Start the chip, clear reset */
  82 #define E8390_TRANS     0x04    /* Transmit a frame */
  83 #define E8390_RREAD     0x08    /* Remote read */
  84 #define E8390_RWRITE    0x10    /* Remote write  */
  85 #define E8390_NODMA     0x20    /* Remote DMA */
  86 #define E8390_PAGE0     0x00    /* Select page chip registers */
  87 #define E8390_PAGE1     0x40    /* using the two high-order bits */
  88 #define E8390_PAGE2     0x80    /* Page 3 is invalid. */
  89
  90 /* Bits in EN0_ISR - Interrupt status register */
  91 #define ENISR_RX        0x01    /* Receiver, no error */
  92 #define ENISR_TX        0x02    /* Transmitter, no error */
  93 #define ENISR_RX_ERR    0x04    /* Receiver, with error */
  94 #define ENISR_TX_ERR    0x08    /* Transmitter, with error */
  95 #define ENISR_OVER      0x10    /* Receiver overwrote the ring */
  96 #define ENISR_COUNTERS  0x20    /* Counters need emptying */
  97 #define ENISR_RDC       0x40    /* remote dma complete */
  98 #define ENISR_RESET     0x80    /* Reset completed */
  99 #define ENISR_ALL       0x3f    /* Interrupts we will enable */
 100
 101 /* Bits in received packet status byte and EN0_RSR*/
 102 #define ENRSR_RXOK      0x01    /* Received a good packet */
 103 #define ENRSR_CRC       0x02    /* CRC error */
 104 #define ENRSR_FAE       0x04    /* frame alignment error */
 105 #define ENRSR_FO        0x08    /* FIFO overrun */
 106 #define ENRSR_MPA       0x10    /* missed pkt */
 107 #define ENRSR_PHY       0x20    /* physical/multicast address */
 108 #define ENRSR_DIS       0x40    /* receiver disable. set in monitor mode */
 109 #define ENRSR_DEF       0x80    /* deferring */
 110
 111 /* Transmitted packet status, EN0_TSR. */
 112 #define ENTSR_PTX 0x01  /* Packet transmitted without error */
 113 #define ENTSR_ND  0x02  /* The transmit wasn't deferred. */
 114 #define ENTSR_COL 0x04  /* The transmit collided at least once. */
 115 #define ENTSR_ABT 0x08  /* The transmit collided 16 times, and was deferred. */
 116 #define ENTSR_CRS 0x10  /* The carrier sense was lost. */
 117 #define ENTSR_FU  0x20  /* A "FIFO underrun" occurred during transmit. */
 118 #define ENTSR_CDH 0x40  /* The collision detect "heartbeat" signal was lost. */
 119 #define ENTSR_OWC 0x80  /* There was an out-of-window collision. */
 120
 121 typedef struct PCINE2000State {
 122     PCIDevice dev;
 123     NE2000State ne2000;
 124 } PCINE2000State;
 125
 126 void ne2000_reset(NE2000State *s)
 127 {
 128     int i;
 129
 130     s->isr = ENISR_RESET;
 131     memcpy(s->mem, &s->c.macaddr, 6);
 132     s->mem[14] = 0x57;
 133     s->mem[15] = 0x57;
 134
 135     /* duplicate prom data */
 136     for(i = 15;i >= 0; i--) {
 137         s->mem[2 * i] = s->mem[i];
 138         s->mem[2 * i + 1] = s->mem[i];
 139     }
 140 }
 141
 142 static void ne2000_update_irq(NE2000State *s)
 143 {
 144     int isr;
 145     isr = (s->isr & s->imr) & 0x7f;
 146 #if defined(DEBUG_NE2000)
 147     printf("NE2000: Set IRQ to %d (%02x %02x)\n",
 148            isr ? 1 : 0, s->isr, s->imr);
 149 #endif
 150     qemu_set_irq(s->irq, (isr != 0));
 151 }
 152
 153 static int ne2000_buffer_full(NE2000State *s)
 154 {
 155     int avail, index, boundary;
 156
 157     index = s->curpag << 8;
 158     boundary = s->boundary << 8;
 159     if (index < boundary)
 160         avail = boundary - index;
 161     else
 162         avail = (s->stop - s->start) - (index - boundary);
 163     if (avail < (MAX_ETH_FRAME_SIZE + 4))
 164         return 1;
 165     return 0;
 166 }
 167
 168 int ne2000_can_receive(NetClientState *nc)
 169 {
 170     NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
 171
 172     if (s->cmd & E8390_STOP)
 173         return 1;
 174     return !ne2000_buffer_full(s);
 175 }
 176
 177 #define MIN_BUF_SIZE 60
 178
 179 ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
 180 {
 181     NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
 182     int size = size_;
 183     uint8_t *p;
 184     unsigned int total_len, next, avail, len, index, mcast_idx;
 185     uint8_t buf1[60];
 186     static const uint8_t broadcast_macaddr[6] =
 187         { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 188
 189 #if defined(DEBUG_NE2000)
 190     printf("NE2000: received len=%d\n", size);
 191 #endif
 192
 193     if (s->cmd & E8390_STOP || ne2000_buffer_full(s))
 194         return -1;
 195
 196     /* XXX: check this */
 197     if (s->rxcr & 0x10) {
 198         /* promiscuous: receive all */
 199     } else {
 200         if (!memcmp(buf,  broadcast_macaddr, 6)) {
 201             /* broadcast address */
 202             if (!(s->rxcr & 0x04))
 203                 return size;
 204         } else if (buf[0] & 0x01) {
 205             /* multicast */
 206             if (!(s->rxcr & 0x08))
 207                 return size;
 208             mcast_idx = compute_mcast_idx(buf);
 209             if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
 210                 return size;
 211         } else if (s->mem[0] == buf[0] &&
 212                    s->mem[2] == buf[1] &&
 213                    s->mem[4] == buf[2] &&
 214                    s->mem[6] == buf[3] &&
 215                    s->mem[8] == buf[4] &&
 216                    s->mem[10] == buf[5]) {
 217             /* match */
 218         } else {
 219             return size;
 220         }
 221     }
 222
 223
 224     /* if too small buffer, then expand it */
 225     if (size < MIN_BUF_SIZE) {
 226         memcpy(buf1, buf, size);
 227         memset(buf1 + size, 0, MIN_BUF_SIZE - size);
 228         buf = buf1;
 229         size = MIN_BUF_SIZE;
 230     }
 231
 232     index = s->curpag << 8;
 233     /* 4 bytes for header */
 234     total_len = size + 4;
 235     /* address for next packet (4 bytes for CRC) */
 236     next = index + ((total_len + 4 + 255) & ~0xff);
 237     if (next >= s->stop)
 238         next -= (s->stop - s->start);
 239     /* prepare packet header */
 240     p = s->mem + index;
 241     s->rsr = ENRSR_RXOK; /* receive status */
 242     /* XXX: check this */
 243     if (buf[0] & 0x01)
 244         s->rsr |= ENRSR_PHY;
 245     p[0] = s->rsr;
 246     p[1] = next >> 8;
 247     p[2] = total_len;
 248     p[3] = total_len >> 8;
 249     index += 4;
 250
 251     /* write packet data */
 252     while (size > 0) {
 253         if (index <= s->stop)
 254             avail = s->stop - index;
 255         else
 256             avail = 0;
 257         len = size;
 258         if (len > avail)
 259             len = avail;
 260         memcpy(s->mem + index, buf, len);
 261         buf += len;
 262         index += len;
 263         if (index == s->stop)
 264             index = s->start;
 265         size -= len;
 266     }
 267     s->curpag = next >> 8;
 268
 269     /* now we can signal we have received something */
 270     s->isr |= ENISR_RX;
 271     ne2000_update_irq(s);
 272
 273     return size_;
 274 }
 275
 276 static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 277 {
 278     NE2000State *s = opaque;
 279     int offset, page, index;
 280
 281     addr &= 0xf;
 282 #ifdef DEBUG_NE2000
 283     printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
 284 #endif
 285     if (addr == E8390_CMD) {
 286         /* control register */
 287         s->cmd = val;
 288         if (!(val & E8390_STOP)) { /* START bit makes no sense on RTL8029... */
 289             s->isr &= ~ENISR_RESET;
 290             /* test specific case: zero length transfer */
 291             if ((val & (E8390_RREAD | E8390_RWRITE)) &&
 292                 s->rcnt == 0) {
 293                 s->isr |= ENISR_RDC;
 294                 ne2000_update_irq(s);
 295             }
 296             if (val & E8390_TRANS) {
 297                 index = (s->tpsr << 8);
 298                 /* XXX: next 2 lines are a hack to make netware 3.11 work */
 299                 if (index >= NE2000_PMEM_END)
 300                     index -= NE2000_PMEM_SIZE;
 301                 /* fail safe: check range on the transmitted length  */
 302                 if (index + s->tcnt <= NE2000_PMEM_END) {
 303                     qemu_send_packet(&s->nic->nc, s->mem + index, s->tcnt);
 304                 }
 305                 /* signal end of transfer */
 306                 s->tsr = ENTSR_PTX;
 307                 s->isr |= ENISR_TX;
 308                 s->cmd &= ~E8390_TRANS;
 309                 ne2000_update_irq(s);
 310             }
 311         }
 312     } else {
 313         page = s->cmd >> 6;
 314         offset = addr | (page << 4);
 315         switch(offset) {
 316         case EN0_STARTPG:
 317             s->start = val << 8;
 318             break;
 319         case EN0_STOPPG:
 320             s->stop = val << 8;
 321             break;
 322         case EN0_BOUNDARY:
 323             s->boundary = val;
 324             break;
 325         case EN0_IMR:
 326             s->imr = val;
 327             ne2000_update_irq(s);
 328             break;
 329         case EN0_TPSR:
 330             s->tpsr = val;
 331             break;
 332         case EN0_TCNTLO:
 333             s->tcnt = (s->tcnt & 0xff00) | val;
 334             break;
 335         case EN0_TCNTHI:
 336             s->tcnt = (s->tcnt & 0x00ff) | (val << 8);
 337             break;
 338         case EN0_RSARLO:
 339             s->rsar = (s->rsar & 0xff00) | val;
 340             break;
 341         case EN0_RSARHI:
 342             s->rsar = (s->rsar & 0x00ff) | (val << 8);
 343             break;
 344         case EN0_RCNTLO:
 345             s->rcnt = (s->rcnt & 0xff00) | val;
 346             break;
 347         case EN0_RCNTHI:
 348             s->rcnt = (s->rcnt & 0x00ff) | (val << 8);
 349             break;
 350         case EN0_RXCR:
 351             s->rxcr = val;
 352             break;
 353         case EN0_DCFG:
 354             s->dcfg = val;
 355             break;
 356         case EN0_ISR:
 357             s->isr &= ~(val & 0x7f);
 358             ne2000_update_irq(s);
 359             break;
 360         case EN1_PHYS ... EN1_PHYS + 5:
 361             s->phys[offset - EN1_PHYS] = val;
 362             break;
 363         case EN1_CURPAG:
 364             s->curpag = val;
 365             break;
 366         case EN1_MULT ... EN1_MULT + 7:
 367             s->mult[offset - EN1_MULT] = val;
 368             break;
 369         }
 370     }
 371 }
 372
 373 static uint32_t ne2000_ioport_read(void *opaque, uint32_t addr)
 374 {
 375     NE2000State *s = opaque;
 376     int offset, page, ret;
 377
 378     addr &= 0xf;
 379     if (addr == E8390_CMD) {
 380         ret = s->cmd;
 381     } else {
 382         page = s->cmd >> 6;
 383         offset = addr | (page << 4);
 384         switch(offset) {
 385         case EN0_TSR:
 386             ret = s->tsr;
 387             break;
 388         case EN0_BOUNDARY:
 389             ret = s->boundary;
 390             break;
 391         case EN0_ISR:
 392             ret = s->isr;
 393             break;
 394         case EN0_RSARLO:
 395             ret = s->rsar & 0x00ff;
 396             break;
 397         case EN0_RSARHI:
 398             ret = s->rsar >> 8;
 399             break;
 400         case EN1_PHYS ... EN1_PHYS + 5:
 401             ret = s->phys[offset - EN1_PHYS];
 402             break;
 403         case EN1_CURPAG:
 404             ret = s->curpag;
 405             break;
 406         case EN1_MULT ... EN1_MULT + 7:
 407             ret = s->mult[offset - EN1_MULT];
 408             break;
 409         case EN0_RSR:
 410             ret = s->rsr;
 411             break;
 412         case EN2_STARTPG:
 413             ret = s->start >> 8;
 414             break;
 415         case EN2_STOPPG:
 416             ret = s->stop >> 8;
 417             break;
 418         case EN0_RTL8029ID0:
 419             ret = 0x50;
 420             break;
 421         case EN0_RTL8029ID1:
 422             ret = 0x43;
 423             break;
 424         case EN3_CONFIG0:
 425             ret = 0;            /* 10baseT media */
 426             break;
 427         case EN3_CONFIG2:
 428             ret = 0x40;         /* 10baseT active */
 429             break;
 430         case EN3_CONFIG3:
 431             ret = 0x40;         /* Full duplex */
 432             break;
 433         default:
 434             ret = 0x00;
 435             break;
 436         }
 437     }
 438 #ifdef DEBUG_NE2000
 439     printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
 440 #endif
 441     return ret;
 442 }
 443
 444 static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr,
 445                                      uint32_t val)
 446 {
 447     if (addr < 32 ||
 448         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 449         s->mem[addr] = val;
 450     }
 451 }
 452
 453 static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr,
 454                                      uint32_t val)
 455 {
 456     addr &= ~1; /* XXX: check exact behaviour if not even */
 457     if (addr < 32 ||
 458         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 459         *(uint16_t *)(s->mem + addr) = cpu_to_le16(val);
 460     }
 461 }
 462
 463 static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr,
 464                                      uint32_t val)
 465 {
 466     addr &= ~1; /* XXX: check exact behaviour if not even */
 467     if (addr < 32 ||
 468         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 469         cpu_to_le32wu((uint32_t *)(s->mem + addr), val);
 470     }
 471 }
 472
 473 static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr)
 474 {
 475     if (addr < 32 ||
 476         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 477         return s->mem[addr];
 478     } else {
 479         return 0xff;
 480     }
 481 }
 482
 483 static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr)
 484 {
 485     addr &= ~1; /* XXX: check exact behaviour if not even */
 486     if (addr < 32 ||
 487         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 488         return le16_to_cpu(*(uint16_t *)(s->mem + addr));
 489     } else {
 490         return 0xffff;
 491     }
 492 }
 493
 494 static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
 495 {
 496     addr &= ~1; /* XXX: check exact behaviour if not even */
 497     if (addr < 32 ||
 498         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
 499         return le32_to_cpupu((uint32_t *)(s->mem + addr));
 500     } else {
 501         return 0xffffffff;
 502     }
 503 }
 504
 505 static inline void ne2000_dma_update(NE2000State *s, int len)
 506 {
 507     s->rsar += len;
 508     /* wrap */
 509     /* XXX: check what to do if rsar > stop */
 510     if (s->rsar == s->stop)
 511         s->rsar = s->start;
 512
 513     if (s->rcnt <= len) {
 514         s->rcnt = 0;
 515         /* signal end of transfer */
 516         s->isr |= ENISR_RDC;
 517         ne2000_update_irq(s);
 518     } else {
 519         s->rcnt -= len;
 520     }
 521 }
 522
 523 static void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 524 {
 525     NE2000State *s = opaque;
 526
 527 #ifdef DEBUG_NE2000
 528     printf("NE2000: asic write val=0x%04x\n", val);
 529 #endif
 530     if (s->rcnt == 0)
 531         return;
 532     if (s->dcfg & 0x01) {
 533         /* 16 bit access */
 534         ne2000_mem_writew(s, s->rsar, val);
 535         ne2000_dma_update(s, 2);
 536     } else {
 537         /* 8 bit access */
 538         ne2000_mem_writeb(s, s->rsar, val);
 539         ne2000_dma_update(s, 1);
 540     }
 541 }
 542
 543 static uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr)
 544 {
 545     NE2000State *s = opaque;
 546     int ret;
 547
 548     if (s->dcfg & 0x01) {
 549         /* 16 bit access */
 550         ret = ne2000_mem_readw(s, s->rsar);
 551         ne2000_dma_update(s, 2);
 552     } else {
 553         /* 8 bit access */
 554         ret = ne2000_mem_readb(s, s->rsar);
 555         ne2000_dma_update(s, 1);
 556     }
 557 #ifdef DEBUG_NE2000
 558     printf("NE2000: asic read val=0x%04x\n", ret);
 559 #endif
 560     return ret;
 561 }
 562
 563 static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
 564 {
 565     NE2000State *s = opaque;
 566
 567 #ifdef DEBUG_NE2000
 568     printf("NE2000: asic writel val=0x%04x\n", val);
 569 #endif
 570     if (s->rcnt == 0)
 571         return;
 572     /* 32 bit access */
 573     ne2000_mem_writel(s, s->rsar, val);
 574     ne2000_dma_update(s, 4);
 575 }
 576
 577 static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr)
 578 {
 579     NE2000State *s = opaque;
 580     int ret;
 581
 582     /* 32 bit access */
 583     ret = ne2000_mem_readl(s, s->rsar);
 584     ne2000_dma_update(s, 4);
 585 #ifdef DEBUG_NE2000
 586     printf("NE2000: asic readl val=0x%04x\n", ret);
 587 #endif
 588     return ret;
 589 }
 590
 591 static void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 592 {
 593     /* nothing to do (end of reset pulse) */
 594 }
 595
 596 static uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr)
 597 {
 598     NE2000State *s = opaque;
 599     ne2000_reset(s);
 600     return 0;
 601 }
 602
 603 static int ne2000_post_load(void* opaque, int version_id)
 604 {
 605     NE2000State* s = opaque;
 606
 607     if (version_id < 2) {
 608         s->rxcr = 0x0c;
 609     }
 610     return 0;
 611 }
 612
 613 const VMStateDescription vmstate_ne2000 = {
 614     .name = "ne2000",
 615     .version_id = 2,
 616     .minimum_version_id = 0,
 617     .minimum_version_id_old = 0,
 618     .post_load = ne2000_post_load,
 619     .fields      = (VMStateField []) {
 620         VMSTATE_UINT8_V(rxcr, NE2000State, 2),
 621         VMSTATE_UINT8(cmd, NE2000State),
 622         VMSTATE_UINT32(start, NE2000State),
 623         VMSTATE_UINT32(stop, NE2000State),
 624         VMSTATE_UINT8(boundary, NE2000State),
 625         VMSTATE_UINT8(tsr, NE2000State),
 626         VMSTATE_UINT8(tpsr, NE2000State),
 627         VMSTATE_UINT16(tcnt, NE2000State),
 628         VMSTATE_UINT16(rcnt, NE2000State),
 629         VMSTATE_UINT32(rsar, NE2000State),
 630         VMSTATE_UINT8(rsr, NE2000State),
 631         VMSTATE_UINT8(isr, NE2000State),
 632         VMSTATE_UINT8(dcfg, NE2000State),
 633         VMSTATE_UINT8(imr, NE2000State),
 634         VMSTATE_BUFFER(phys, NE2000State),
 635         VMSTATE_UINT8(curpag, NE2000State),
 636         VMSTATE_BUFFER(mult, NE2000State),
 637         VMSTATE_UNUSED(4), /* was irq */
 638         VMSTATE_BUFFER(mem, NE2000State),
 639         VMSTATE_END_OF_LIST()
 640     }
 641 };
 642
 643 static const VMStateDescription vmstate_pci_ne2000 = {
 644     .name = "ne2000",
 645     .version_id = 3,
 646     .minimum_version_id = 3,
 647     .minimum_version_id_old = 3,
 648     .fields      = (VMStateField []) {
 649         VMSTATE_PCI_DEVICE(dev, PCINE2000State),
 650         VMSTATE_STRUCT(ne2000, PCINE2000State, 0, vmstate_ne2000, NE2000State),
 651         VMSTATE_END_OF_LIST()
 652     }
 653 };
 654
 655 static uint64_t ne2000_read(void *opaque, hwaddr addr,
 656                             unsigned size)
 657 {
 658     NE2000State *s = opaque;
 659
 660     if (addr < 0x10 && size == 1) {
 661         return ne2000_ioport_read(s, addr);
 662     } else if (addr == 0x10) {
 663         if (size <= 2) {
 664             return ne2000_asic_ioport_read(s, addr);
 665         } else {
 666             return ne2000_asic_ioport_readl(s, addr);
 667         }
 668     } else if (addr == 0x1f && size == 1) {
 669         return ne2000_reset_ioport_read(s, addr);
 670     }
 671     return ((uint64_t)1 << (size * 8)) - 1;
 672 }
 673
 674 static void ne2000_write(void *opaque, hwaddr addr,
 675                          uint64_t data, unsigned size)
 676 {
 677     NE2000State *s = opaque;
 678
 679     if (addr < 0x10 && size == 1) {
 680         ne2000_ioport_write(s, addr, data);
 681     } else if (addr == 0x10) {
 682         if (size <= 2) {
 683             ne2000_asic_ioport_write(s, addr, data);
 684         } else {
 685             ne2000_asic_ioport_writel(s, addr, data);
 686         }
 687     } else if (addr == 0x1f && size == 1) {
 688         ne2000_reset_ioport_write(s, addr, data);
 689     }
 690 }
 691
 692 static const MemoryRegionOps ne2000_ops = {
 693     .read = ne2000_read,
 694     .write = ne2000_write,
 695     .endianness = DEVICE_NATIVE_ENDIAN,
 696 };
 697
 698 /***********************************************************/
 699 /* PCI NE2000 definitions */
 700
 701 void ne2000_setup_io(NE2000State *s, unsigned size)
 702 {
 703     memory_region_init_io(&s->io, &ne2000_ops, s, "ne2000", size);
 704 }
 705
 706 static void ne2000_cleanup(NetClientState *nc)
 707 {
 708     NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
 709
 710     s->nic = NULL;
 711 }
 712
 713 static NetClientInfo net_ne2000_info = {
 714     .type = NET_CLIENT_OPTIONS_KIND_NIC,
 715     .size = sizeof(NICState),
 716     .can_receive = ne2000_can_receive,
 717     .receive = ne2000_receive,
 718     .cleanup = ne2000_cleanup,
 719 };
 720
 721 static int pci_ne2000_init(PCIDevice *pci_dev)
 722 {
 723     PCINE2000State *d = DO_UPCAST(PCINE2000State, dev, pci_dev);
 724     NE2000State *s;
 725     uint8_t *pci_conf;
 726
 727     pci_conf = d->dev.config;
 728     pci_conf[PCI_INTERRUPT_PIN] = 1; /* interrupt pin A */
 729
 730     s = &d->ne2000;
 731     ne2000_setup_io(s, 0x100);
 732     pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
 733     s->irq = d->dev.irq[0];
 734
 735     qemu_macaddr_default_if_unset(&s->c.macaddr);
 736     ne2000_reset(s);
 737
 738     s->nic = qemu_new_nic(&net_ne2000_info, &s->c,
 739                           object_get_typename(OBJECT(pci_dev)), pci_dev->qdev.id, s);
 740     qemu_format_nic_info_str(&s->nic->nc, s->c.macaddr.a);
 741
 742     add_boot_device_path(s->c.bootindex, &pci_dev->qdev, "/ethernet-phy@0");
 743
 744     return 0;
 745 }
 746
 747 static void pci_ne2000_exit(PCIDevice *pci_dev)
 748 {
 749     PCINE2000State *d = DO_UPCAST(PCINE2000State, dev, pci_dev);
 750     NE2000State *s = &d->ne2000;
 751
 752     memory_region_destroy(&s->io);
 753     qemu_del_net_client(&s->nic->nc);
 754 }
 755
 756 static Property ne2000_properties[] = {
 757     DEFINE_NIC_PROPERTIES(PCINE2000State, ne2000.c),
 758     DEFINE_PROP_END_OF_LIST(),
 759 };
 760
 761 static void ne2000_class_init(ObjectClass *klass, void *data)
 762 {
 763     DeviceClass *dc = DEVICE_CLASS(klass);
 764     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 765
 766     k->init = pci_ne2000_init;
 767     k->exit = pci_ne2000_exit;
 768     k->romfile = "pxe-ne2k_pci.rom",
 769     k->vendor_id = PCI_VENDOR_ID_REALTEK;
 770     k->device_id = PCI_DEVICE_ID_REALTEK_8029;
 771     k->class_id = PCI_CLASS_NETWORK_ETHERNET;
 772     dc->vmsd = &vmstate_pci_ne2000;
 773     dc->props = ne2000_properties;
 774 }
 775
 776 static const TypeInfo ne2000_info = {
 777     .name          = "ne2k_pci",
 778     .parent        = TYPE_PCI_DEVICE,
 779     .instance_size = sizeof(PCINE2000State),
 780     .class_init    = ne2000_class_init,
 781 };
 782
 783 static void ne2000_register_types(void)
 784 {
 785     type_register_static(&ne2000_info);
 786 }
 787
 788 type_init(ne2000_register_types)