root / hw / ne2000.c @ 89c473fd
History | View | Annotate | Download (22.8 kB)
| 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.h" |
| 26 |
#include "net.h" |
| 27 |
#include "ne2000.h" |
| 28 |
#include "loader.h" |
| 29 |
#include "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 |
#define POLYNOMIAL 0x04c11db6 |
| 154 |
|
| 155 |
/* From FreeBSD */
|
| 156 |
/* XXX: optimize */
|
| 157 |
static int compute_mcast_idx(const uint8_t *ep) |
| 158 |
{
|
| 159 |
uint32_t crc; |
| 160 |
int carry, i, j;
|
| 161 |
uint8_t b; |
| 162 |
|
| 163 |
crc = 0xffffffff;
|
| 164 |
for (i = 0; i < 6; i++) { |
| 165 |
b = *ep++; |
| 166 |
for (j = 0; j < 8; j++) { |
| 167 |
carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); |
| 168 |
crc <<= 1;
|
| 169 |
b >>= 1;
|
| 170 |
if (carry)
|
| 171 |
crc = ((crc ^ POLYNOMIAL) | carry); |
| 172 |
} |
| 173 |
} |
| 174 |
return (crc >> 26); |
| 175 |
} |
| 176 |
|
| 177 |
static int ne2000_buffer_full(NE2000State *s) |
| 178 |
{
|
| 179 |
int avail, index, boundary;
|
| 180 |
|
| 181 |
index = s->curpag << 8;
|
| 182 |
boundary = s->boundary << 8;
|
| 183 |
if (index < boundary)
|
| 184 |
avail = boundary - index; |
| 185 |
else
|
| 186 |
avail = (s->stop - s->start) - (index - boundary); |
| 187 |
if (avail < (MAX_ETH_FRAME_SIZE + 4)) |
| 188 |
return 1; |
| 189 |
return 0; |
| 190 |
} |
| 191 |
|
| 192 |
int ne2000_can_receive(VLANClientState *nc)
|
| 193 |
{
|
| 194 |
NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque; |
| 195 |
|
| 196 |
if (s->cmd & E8390_STOP)
|
| 197 |
return 1; |
| 198 |
return !ne2000_buffer_full(s);
|
| 199 |
} |
| 200 |
|
| 201 |
#define MIN_BUF_SIZE 60 |
| 202 |
|
| 203 |
ssize_t ne2000_receive(VLANClientState *nc, const uint8_t *buf, size_t size_)
|
| 204 |
{
|
| 205 |
NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque; |
| 206 |
int size = size_;
|
| 207 |
uint8_t *p; |
| 208 |
unsigned int total_len, next, avail, len, index, mcast_idx; |
| 209 |
uint8_t buf1[60];
|
| 210 |
static const uint8_t broadcast_macaddr[6] = |
| 211 |
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
| 212 |
|
| 213 |
#if defined(DEBUG_NE2000)
|
| 214 |
printf("NE2000: received len=%d\n", size);
|
| 215 |
#endif
|
| 216 |
|
| 217 |
if (s->cmd & E8390_STOP || ne2000_buffer_full(s))
|
| 218 |
return -1; |
| 219 |
|
| 220 |
/* XXX: check this */
|
| 221 |
if (s->rxcr & 0x10) { |
| 222 |
/* promiscuous: receive all */
|
| 223 |
} else {
|
| 224 |
if (!memcmp(buf, broadcast_macaddr, 6)) { |
| 225 |
/* broadcast address */
|
| 226 |
if (!(s->rxcr & 0x04)) |
| 227 |
return size;
|
| 228 |
} else if (buf[0] & 0x01) { |
| 229 |
/* multicast */
|
| 230 |
if (!(s->rxcr & 0x08)) |
| 231 |
return size;
|
| 232 |
mcast_idx = compute_mcast_idx(buf); |
| 233 |
if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) |
| 234 |
return size;
|
| 235 |
} else if (s->mem[0] == buf[0] && |
| 236 |
s->mem[2] == buf[1] && |
| 237 |
s->mem[4] == buf[2] && |
| 238 |
s->mem[6] == buf[3] && |
| 239 |
s->mem[8] == buf[4] && |
| 240 |
s->mem[10] == buf[5]) { |
| 241 |
/* match */
|
| 242 |
} else {
|
| 243 |
return size;
|
| 244 |
} |
| 245 |
} |
| 246 |
|
| 247 |
|
| 248 |
/* if too small buffer, then expand it */
|
| 249 |
if (size < MIN_BUF_SIZE) {
|
| 250 |
memcpy(buf1, buf, size); |
| 251 |
memset(buf1 + size, 0, MIN_BUF_SIZE - size);
|
| 252 |
buf = buf1; |
| 253 |
size = MIN_BUF_SIZE; |
| 254 |
} |
| 255 |
|
| 256 |
index = s->curpag << 8;
|
| 257 |
/* 4 bytes for header */
|
| 258 |
total_len = size + 4;
|
| 259 |
/* address for next packet (4 bytes for CRC) */
|
| 260 |
next = index + ((total_len + 4 + 255) & ~0xff); |
| 261 |
if (next >= s->stop)
|
| 262 |
next -= (s->stop - s->start); |
| 263 |
/* prepare packet header */
|
| 264 |
p = s->mem + index; |
| 265 |
s->rsr = ENRSR_RXOK; /* receive status */
|
| 266 |
/* XXX: check this */
|
| 267 |
if (buf[0] & 0x01) |
| 268 |
s->rsr |= ENRSR_PHY; |
| 269 |
p[0] = s->rsr;
|
| 270 |
p[1] = next >> 8; |
| 271 |
p[2] = total_len;
|
| 272 |
p[3] = total_len >> 8; |
| 273 |
index += 4;
|
| 274 |
|
| 275 |
/* write packet data */
|
| 276 |
while (size > 0) { |
| 277 |
if (index <= s->stop)
|
| 278 |
avail = s->stop - index; |
| 279 |
else
|
| 280 |
avail = 0;
|
| 281 |
len = size; |
| 282 |
if (len > avail)
|
| 283 |
len = avail; |
| 284 |
memcpy(s->mem + index, buf, len); |
| 285 |
buf += len; |
| 286 |
index += len; |
| 287 |
if (index == s->stop)
|
| 288 |
index = s->start; |
| 289 |
size -= len; |
| 290 |
} |
| 291 |
s->curpag = next >> 8;
|
| 292 |
|
| 293 |
/* now we can signal we have received something */
|
| 294 |
s->isr |= ENISR_RX; |
| 295 |
ne2000_update_irq(s); |
| 296 |
|
| 297 |
return size_;
|
| 298 |
} |
| 299 |
|
| 300 |
void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| 301 |
{
|
| 302 |
NE2000State *s = opaque; |
| 303 |
int offset, page, index;
|
| 304 |
|
| 305 |
addr &= 0xf;
|
| 306 |
#ifdef DEBUG_NE2000
|
| 307 |
printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
|
| 308 |
#endif
|
| 309 |
if (addr == E8390_CMD) {
|
| 310 |
/* control register */
|
| 311 |
s->cmd = val; |
| 312 |
if (!(val & E8390_STOP)) { /* START bit makes no sense on RTL8029... */ |
| 313 |
s->isr &= ~ENISR_RESET; |
| 314 |
/* test specific case: zero length transfer */
|
| 315 |
if ((val & (E8390_RREAD | E8390_RWRITE)) &&
|
| 316 |
s->rcnt == 0) {
|
| 317 |
s->isr |= ENISR_RDC; |
| 318 |
ne2000_update_irq(s); |
| 319 |
} |
| 320 |
if (val & E8390_TRANS) {
|
| 321 |
index = (s->tpsr << 8);
|
| 322 |
/* XXX: next 2 lines are a hack to make netware 3.11 work */
|
| 323 |
if (index >= NE2000_PMEM_END)
|
| 324 |
index -= NE2000_PMEM_SIZE; |
| 325 |
/* fail safe: check range on the transmitted length */
|
| 326 |
if (index + s->tcnt <= NE2000_PMEM_END) {
|
| 327 |
qemu_send_packet(&s->nic->nc, s->mem + index, s->tcnt); |
| 328 |
} |
| 329 |
/* signal end of transfer */
|
| 330 |
s->tsr = ENTSR_PTX; |
| 331 |
s->isr |= ENISR_TX; |
| 332 |
s->cmd &= ~E8390_TRANS; |
| 333 |
ne2000_update_irq(s); |
| 334 |
} |
| 335 |
} |
| 336 |
} else {
|
| 337 |
page = s->cmd >> 6;
|
| 338 |
offset = addr | (page << 4);
|
| 339 |
switch(offset) {
|
| 340 |
case EN0_STARTPG:
|
| 341 |
s->start = val << 8;
|
| 342 |
break;
|
| 343 |
case EN0_STOPPG:
|
| 344 |
s->stop = val << 8;
|
| 345 |
break;
|
| 346 |
case EN0_BOUNDARY:
|
| 347 |
s->boundary = val; |
| 348 |
break;
|
| 349 |
case EN0_IMR:
|
| 350 |
s->imr = val; |
| 351 |
ne2000_update_irq(s); |
| 352 |
break;
|
| 353 |
case EN0_TPSR:
|
| 354 |
s->tpsr = val; |
| 355 |
break;
|
| 356 |
case EN0_TCNTLO:
|
| 357 |
s->tcnt = (s->tcnt & 0xff00) | val;
|
| 358 |
break;
|
| 359 |
case EN0_TCNTHI:
|
| 360 |
s->tcnt = (s->tcnt & 0x00ff) | (val << 8); |
| 361 |
break;
|
| 362 |
case EN0_RSARLO:
|
| 363 |
s->rsar = (s->rsar & 0xff00) | val;
|
| 364 |
break;
|
| 365 |
case EN0_RSARHI:
|
| 366 |
s->rsar = (s->rsar & 0x00ff) | (val << 8); |
| 367 |
break;
|
| 368 |
case EN0_RCNTLO:
|
| 369 |
s->rcnt = (s->rcnt & 0xff00) | val;
|
| 370 |
break;
|
| 371 |
case EN0_RCNTHI:
|
| 372 |
s->rcnt = (s->rcnt & 0x00ff) | (val << 8); |
| 373 |
break;
|
| 374 |
case EN0_RXCR:
|
| 375 |
s->rxcr = val; |
| 376 |
break;
|
| 377 |
case EN0_DCFG:
|
| 378 |
s->dcfg = val; |
| 379 |
break;
|
| 380 |
case EN0_ISR:
|
| 381 |
s->isr &= ~(val & 0x7f);
|
| 382 |
ne2000_update_irq(s); |
| 383 |
break;
|
| 384 |
case EN1_PHYS ... EN1_PHYS + 5: |
| 385 |
s->phys[offset - EN1_PHYS] = val; |
| 386 |
break;
|
| 387 |
case EN1_CURPAG:
|
| 388 |
s->curpag = val; |
| 389 |
break;
|
| 390 |
case EN1_MULT ... EN1_MULT + 7: |
| 391 |
s->mult[offset - EN1_MULT] = val; |
| 392 |
break;
|
| 393 |
} |
| 394 |
} |
| 395 |
} |
| 396 |
|
| 397 |
uint32_t ne2000_ioport_read(void *opaque, uint32_t addr)
|
| 398 |
{
|
| 399 |
NE2000State *s = opaque; |
| 400 |
int offset, page, ret;
|
| 401 |
|
| 402 |
addr &= 0xf;
|
| 403 |
if (addr == E8390_CMD) {
|
| 404 |
ret = s->cmd; |
| 405 |
} else {
|
| 406 |
page = s->cmd >> 6;
|
| 407 |
offset = addr | (page << 4);
|
| 408 |
switch(offset) {
|
| 409 |
case EN0_TSR:
|
| 410 |
ret = s->tsr; |
| 411 |
break;
|
| 412 |
case EN0_BOUNDARY:
|
| 413 |
ret = s->boundary; |
| 414 |
break;
|
| 415 |
case EN0_ISR:
|
| 416 |
ret = s->isr; |
| 417 |
break;
|
| 418 |
case EN0_RSARLO:
|
| 419 |
ret = s->rsar & 0x00ff;
|
| 420 |
break;
|
| 421 |
case EN0_RSARHI:
|
| 422 |
ret = s->rsar >> 8;
|
| 423 |
break;
|
| 424 |
case EN1_PHYS ... EN1_PHYS + 5: |
| 425 |
ret = s->phys[offset - EN1_PHYS]; |
| 426 |
break;
|
| 427 |
case EN1_CURPAG:
|
| 428 |
ret = s->curpag; |
| 429 |
break;
|
| 430 |
case EN1_MULT ... EN1_MULT + 7: |
| 431 |
ret = s->mult[offset - EN1_MULT]; |
| 432 |
break;
|
| 433 |
case EN0_RSR:
|
| 434 |
ret = s->rsr; |
| 435 |
break;
|
| 436 |
case EN2_STARTPG:
|
| 437 |
ret = s->start >> 8;
|
| 438 |
break;
|
| 439 |
case EN2_STOPPG:
|
| 440 |
ret = s->stop >> 8;
|
| 441 |
break;
|
| 442 |
case EN0_RTL8029ID0:
|
| 443 |
ret = 0x50;
|
| 444 |
break;
|
| 445 |
case EN0_RTL8029ID1:
|
| 446 |
ret = 0x43;
|
| 447 |
break;
|
| 448 |
case EN3_CONFIG0:
|
| 449 |
ret = 0; /* 10baseT media */ |
| 450 |
break;
|
| 451 |
case EN3_CONFIG2:
|
| 452 |
ret = 0x40; /* 10baseT active */ |
| 453 |
break;
|
| 454 |
case EN3_CONFIG3:
|
| 455 |
ret = 0x40; /* Full duplex */ |
| 456 |
break;
|
| 457 |
default:
|
| 458 |
ret = 0x00;
|
| 459 |
break;
|
| 460 |
} |
| 461 |
} |
| 462 |
#ifdef DEBUG_NE2000
|
| 463 |
printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
|
| 464 |
#endif
|
| 465 |
return ret;
|
| 466 |
} |
| 467 |
|
| 468 |
static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr, |
| 469 |
uint32_t val) |
| 470 |
{
|
| 471 |
if (addr < 32 || |
| 472 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 473 |
s->mem[addr] = val; |
| 474 |
} |
| 475 |
} |
| 476 |
|
| 477 |
static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr, |
| 478 |
uint32_t val) |
| 479 |
{
|
| 480 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
| 481 |
if (addr < 32 || |
| 482 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 483 |
*(uint16_t *)(s->mem + addr) = cpu_to_le16(val); |
| 484 |
} |
| 485 |
} |
| 486 |
|
| 487 |
static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr, |
| 488 |
uint32_t val) |
| 489 |
{
|
| 490 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
| 491 |
if (addr < 32 || |
| 492 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 493 |
cpu_to_le32wu((uint32_t *)(s->mem + addr), val); |
| 494 |
} |
| 495 |
} |
| 496 |
|
| 497 |
static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr) |
| 498 |
{
|
| 499 |
if (addr < 32 || |
| 500 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 501 |
return s->mem[addr];
|
| 502 |
} else {
|
| 503 |
return 0xff; |
| 504 |
} |
| 505 |
} |
| 506 |
|
| 507 |
static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr) |
| 508 |
{
|
| 509 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
| 510 |
if (addr < 32 || |
| 511 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 512 |
return le16_to_cpu(*(uint16_t *)(s->mem + addr));
|
| 513 |
} else {
|
| 514 |
return 0xffff; |
| 515 |
} |
| 516 |
} |
| 517 |
|
| 518 |
static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr) |
| 519 |
{
|
| 520 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
| 521 |
if (addr < 32 || |
| 522 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
|
| 523 |
return le32_to_cpupu((uint32_t *)(s->mem + addr));
|
| 524 |
} else {
|
| 525 |
return 0xffffffff; |
| 526 |
} |
| 527 |
} |
| 528 |
|
| 529 |
static inline void ne2000_dma_update(NE2000State *s, int len) |
| 530 |
{
|
| 531 |
s->rsar += len; |
| 532 |
/* wrap */
|
| 533 |
/* XXX: check what to do if rsar > stop */
|
| 534 |
if (s->rsar == s->stop)
|
| 535 |
s->rsar = s->start; |
| 536 |
|
| 537 |
if (s->rcnt <= len) {
|
| 538 |
s->rcnt = 0;
|
| 539 |
/* signal end of transfer */
|
| 540 |
s->isr |= ENISR_RDC; |
| 541 |
ne2000_update_irq(s); |
| 542 |
} else {
|
| 543 |
s->rcnt -= len; |
| 544 |
} |
| 545 |
} |
| 546 |
|
| 547 |
void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| 548 |
{
|
| 549 |
NE2000State *s = opaque; |
| 550 |
|
| 551 |
#ifdef DEBUG_NE2000
|
| 552 |
printf("NE2000: asic write val=0x%04x\n", val);
|
| 553 |
#endif
|
| 554 |
if (s->rcnt == 0) |
| 555 |
return;
|
| 556 |
if (s->dcfg & 0x01) { |
| 557 |
/* 16 bit access */
|
| 558 |
ne2000_mem_writew(s, s->rsar, val); |
| 559 |
ne2000_dma_update(s, 2);
|
| 560 |
} else {
|
| 561 |
/* 8 bit access */
|
| 562 |
ne2000_mem_writeb(s, s->rsar, val); |
| 563 |
ne2000_dma_update(s, 1);
|
| 564 |
} |
| 565 |
} |
| 566 |
|
| 567 |
uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr)
|
| 568 |
{
|
| 569 |
NE2000State *s = opaque; |
| 570 |
int ret;
|
| 571 |
|
| 572 |
if (s->dcfg & 0x01) { |
| 573 |
/* 16 bit access */
|
| 574 |
ret = ne2000_mem_readw(s, s->rsar); |
| 575 |
ne2000_dma_update(s, 2);
|
| 576 |
} else {
|
| 577 |
/* 8 bit access */
|
| 578 |
ret = ne2000_mem_readb(s, s->rsar); |
| 579 |
ne2000_dma_update(s, 1);
|
| 580 |
} |
| 581 |
#ifdef DEBUG_NE2000
|
| 582 |
printf("NE2000: asic read val=0x%04x\n", ret);
|
| 583 |
#endif
|
| 584 |
return ret;
|
| 585 |
} |
| 586 |
|
| 587 |
static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val) |
| 588 |
{
|
| 589 |
NE2000State *s = opaque; |
| 590 |
|
| 591 |
#ifdef DEBUG_NE2000
|
| 592 |
printf("NE2000: asic writel val=0x%04x\n", val);
|
| 593 |
#endif
|
| 594 |
if (s->rcnt == 0) |
| 595 |
return;
|
| 596 |
/* 32 bit access */
|
| 597 |
ne2000_mem_writel(s, s->rsar, val); |
| 598 |
ne2000_dma_update(s, 4);
|
| 599 |
} |
| 600 |
|
| 601 |
static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr) |
| 602 |
{
|
| 603 |
NE2000State *s = opaque; |
| 604 |
int ret;
|
| 605 |
|
| 606 |
/* 32 bit access */
|
| 607 |
ret = ne2000_mem_readl(s, s->rsar); |
| 608 |
ne2000_dma_update(s, 4);
|
| 609 |
#ifdef DEBUG_NE2000
|
| 610 |
printf("NE2000: asic readl val=0x%04x\n", ret);
|
| 611 |
#endif
|
| 612 |
return ret;
|
| 613 |
} |
| 614 |
|
| 615 |
void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| 616 |
{
|
| 617 |
/* nothing to do (end of reset pulse) */
|
| 618 |
} |
| 619 |
|
| 620 |
uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr)
|
| 621 |
{
|
| 622 |
NE2000State *s = opaque; |
| 623 |
ne2000_reset(s); |
| 624 |
return 0; |
| 625 |
} |
| 626 |
|
| 627 |
static int ne2000_post_load(void* opaque, int version_id) |
| 628 |
{
|
| 629 |
NE2000State* s = opaque; |
| 630 |
|
| 631 |
if (version_id < 2) { |
| 632 |
s->rxcr = 0x0c;
|
| 633 |
} |
| 634 |
return 0; |
| 635 |
} |
| 636 |
|
| 637 |
const VMStateDescription vmstate_ne2000 = {
|
| 638 |
.name = "ne2000",
|
| 639 |
.version_id = 2,
|
| 640 |
.minimum_version_id = 0,
|
| 641 |
.minimum_version_id_old = 0,
|
| 642 |
.post_load = ne2000_post_load, |
| 643 |
.fields = (VMStateField []) {
|
| 644 |
VMSTATE_UINT8_V(rxcr, NE2000State, 2),
|
| 645 |
VMSTATE_UINT8(cmd, NE2000State), |
| 646 |
VMSTATE_UINT32(start, NE2000State), |
| 647 |
VMSTATE_UINT32(stop, NE2000State), |
| 648 |
VMSTATE_UINT8(boundary, NE2000State), |
| 649 |
VMSTATE_UINT8(tsr, NE2000State), |
| 650 |
VMSTATE_UINT8(tpsr, NE2000State), |
| 651 |
VMSTATE_UINT16(tcnt, NE2000State), |
| 652 |
VMSTATE_UINT16(rcnt, NE2000State), |
| 653 |
VMSTATE_UINT32(rsar, NE2000State), |
| 654 |
VMSTATE_UINT8(rsr, NE2000State), |
| 655 |
VMSTATE_UINT8(isr, NE2000State), |
| 656 |
VMSTATE_UINT8(dcfg, NE2000State), |
| 657 |
VMSTATE_UINT8(imr, NE2000State), |
| 658 |
VMSTATE_BUFFER(phys, NE2000State), |
| 659 |
VMSTATE_UINT8(curpag, NE2000State), |
| 660 |
VMSTATE_BUFFER(mult, NE2000State), |
| 661 |
VMSTATE_UNUSED(4), /* was irq */ |
| 662 |
VMSTATE_BUFFER(mem, NE2000State), |
| 663 |
VMSTATE_END_OF_LIST() |
| 664 |
} |
| 665 |
}; |
| 666 |
|
| 667 |
static const VMStateDescription vmstate_pci_ne2000 = { |
| 668 |
.name = "ne2000",
|
| 669 |
.version_id = 3,
|
| 670 |
.minimum_version_id = 3,
|
| 671 |
.minimum_version_id_old = 3,
|
| 672 |
.fields = (VMStateField []) {
|
| 673 |
VMSTATE_PCI_DEVICE(dev, PCINE2000State), |
| 674 |
VMSTATE_STRUCT(ne2000, PCINE2000State, 0, vmstate_ne2000, NE2000State),
|
| 675 |
VMSTATE_END_OF_LIST() |
| 676 |
} |
| 677 |
}; |
| 678 |
|
| 679 |
/***********************************************************/
|
| 680 |
/* PCI NE2000 definitions */
|
| 681 |
|
| 682 |
static void ne2000_map(PCIDevice *pci_dev, int region_num, |
| 683 |
pcibus_t addr, pcibus_t size, int type)
|
| 684 |
{
|
| 685 |
PCINE2000State *d = DO_UPCAST(PCINE2000State, dev, pci_dev); |
| 686 |
NE2000State *s = &d->ne2000; |
| 687 |
|
| 688 |
register_ioport_write(addr, 16, 1, ne2000_ioport_write, s); |
| 689 |
register_ioport_read(addr, 16, 1, ne2000_ioport_read, s); |
| 690 |
|
| 691 |
register_ioport_write(addr + 0x10, 1, 1, ne2000_asic_ioport_write, s); |
| 692 |
register_ioport_read(addr + 0x10, 1, 1, ne2000_asic_ioport_read, s); |
| 693 |
register_ioport_write(addr + 0x10, 2, 2, ne2000_asic_ioport_write, s); |
| 694 |
register_ioport_read(addr + 0x10, 2, 2, ne2000_asic_ioport_read, s); |
| 695 |
register_ioport_write(addr + 0x10, 4, 4, ne2000_asic_ioport_writel, s); |
| 696 |
register_ioport_read(addr + 0x10, 4, 4, ne2000_asic_ioport_readl, s); |
| 697 |
|
| 698 |
register_ioport_write(addr + 0x1f, 1, 1, ne2000_reset_ioport_write, s); |
| 699 |
register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s); |
| 700 |
} |
| 701 |
|
| 702 |
static void ne2000_cleanup(VLANClientState *nc) |
| 703 |
{
|
| 704 |
NE2000State *s = DO_UPCAST(NICState, nc, nc)->opaque; |
| 705 |
|
| 706 |
s->nic = NULL;
|
| 707 |
} |
| 708 |
|
| 709 |
static NetClientInfo net_ne2000_info = {
|
| 710 |
.type = NET_CLIENT_TYPE_NIC, |
| 711 |
.size = sizeof(NICState),
|
| 712 |
.can_receive = ne2000_can_receive, |
| 713 |
.receive = ne2000_receive, |
| 714 |
.cleanup = ne2000_cleanup, |
| 715 |
}; |
| 716 |
|
| 717 |
static int pci_ne2000_init(PCIDevice *pci_dev) |
| 718 |
{
|
| 719 |
PCINE2000State *d = DO_UPCAST(PCINE2000State, dev, pci_dev); |
| 720 |
NE2000State *s; |
| 721 |
uint8_t *pci_conf; |
| 722 |
|
| 723 |
pci_conf = d->dev.config; |
| 724 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK); |
| 725 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8029); |
| 726 |
pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET); |
| 727 |
/* TODO: RST# value should be 0. PCI spec 6.2.4 */
|
| 728 |
pci_conf[PCI_INTERRUPT_PIN] = 1; // interrupt pin 0 |
| 729 |
|
| 730 |
pci_register_bar(&d->dev, 0, 0x100, |
| 731 |
PCI_BASE_ADDRESS_SPACE_IO, ne2000_map); |
| 732 |
s = &d->ne2000; |
| 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 |
pci_dev->qdev.info->name, pci_dev->qdev.id, s); |
| 740 |
qemu_format_nic_info_str(&s->nic->nc, s->c.macaddr.a); |
| 741 |
|
| 742 |
if (!pci_dev->qdev.hotplugged) {
|
| 743 |
static int loaded = 0; |
| 744 |
if (!loaded) {
|
| 745 |
rom_add_option("pxe-ne2k_pci.bin", -1); |
| 746 |
loaded = 1;
|
| 747 |
} |
| 748 |
} |
| 749 |
|
| 750 |
add_boot_device_path(s->c.bootindex, &pci_dev->qdev, "/ethernet-phy@0");
|
| 751 |
|
| 752 |
return 0; |
| 753 |
} |
| 754 |
|
| 755 |
static int pci_ne2000_exit(PCIDevice *pci_dev) |
| 756 |
{
|
| 757 |
PCINE2000State *d = DO_UPCAST(PCINE2000State, dev, pci_dev); |
| 758 |
NE2000State *s = &d->ne2000; |
| 759 |
|
| 760 |
qemu_del_vlan_client(&s->nic->nc); |
| 761 |
return 0; |
| 762 |
} |
| 763 |
|
| 764 |
static PCIDeviceInfo ne2000_info = {
|
| 765 |
.qdev.name = "ne2k_pci",
|
| 766 |
.qdev.size = sizeof(PCINE2000State),
|
| 767 |
.qdev.vmsd = &vmstate_pci_ne2000, |
| 768 |
.init = pci_ne2000_init, |
| 769 |
.exit = pci_ne2000_exit, |
| 770 |
.qdev.props = (Property[]) {
|
| 771 |
DEFINE_NIC_PROPERTIES(PCINE2000State, ne2000.c), |
| 772 |
DEFINE_PROP_END_OF_LIST(), |
| 773 |
} |
| 774 |
}; |
| 775 |
|
| 776 |
static void ne2000_register_devices(void) |
| 777 |
{
|
| 778 |
pci_qdev_register(&ne2000_info); |
| 779 |
} |
| 780 |
|
| 781 |
device_init(ne2000_register_devices) |