Revision 7c9d8e07 hw/ne2000.c
| b/hw/ne2000.c | ||
|---|---|---|
| 122 | 122 |
uint16_t rcnt; |
| 123 | 123 |
uint32_t rsar; |
| 124 | 124 |
uint8_t rsr; |
| 125 |
uint8_t rxcr; |
|
| 125 | 126 |
uint8_t isr; |
| 126 | 127 |
uint8_t dcfg; |
| 127 | 128 |
uint8_t imr; |
| ... | ... | |
| 130 | 131 |
uint8_t mult[8]; /* multicast mask array */ |
| 131 | 132 |
int irq; |
| 132 | 133 |
PCIDevice *pci_dev; |
| 133 |
NetDriverState *nd; |
|
| 134 |
VLANClientState *vc; |
|
| 135 |
uint8_t macaddr[6]; |
|
| 134 | 136 |
uint8_t mem[NE2000_MEM_SIZE]; |
| 135 | 137 |
} NE2000State; |
| 136 | 138 |
|
| ... | ... | |
| 139 | 141 |
int i; |
| 140 | 142 |
|
| 141 | 143 |
s->isr = ENISR_RESET; |
| 142 |
memcpy(s->mem, s->nd->macaddr, 6);
|
|
| 144 |
memcpy(s->mem, s->macaddr, 6); |
|
| 143 | 145 |
s->mem[14] = 0x57; |
| 144 | 146 |
s->mem[15] = 0x57; |
| 145 | 147 |
|
| ... | ... | |
| 167 | 169 |
} |
| 168 | 170 |
} |
| 169 | 171 |
|
| 172 |
#define POLYNOMIAL 0x04c11db6 |
|
| 173 |
|
|
| 174 |
/* From FreeBSD */ |
|
| 175 |
/* XXX: optimize */ |
|
| 176 |
static int compute_mcast_idx(const uint8_t *ep) |
|
| 177 |
{
|
|
| 178 |
uint32_t crc; |
|
| 179 |
int carry, i, j; |
|
| 180 |
uint8_t b; |
|
| 181 |
|
|
| 182 |
crc = 0xffffffff; |
|
| 183 |
for (i = 0; i < 6; i++) {
|
|
| 184 |
b = *ep++; |
|
| 185 |
for (j = 0; j < 8; j++) {
|
|
| 186 |
carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); |
|
| 187 |
crc <<= 1; |
|
| 188 |
b >>= 1; |
|
| 189 |
if (carry) |
|
| 190 |
crc = ((crc ^ POLYNOMIAL) | carry); |
|
| 191 |
} |
|
| 192 |
} |
|
| 193 |
return (crc >> 26); |
|
| 194 |
} |
|
| 195 |
|
|
| 170 | 196 |
/* return the max buffer size if the NE2000 can receive more data */ |
| 171 | 197 |
static int ne2000_can_receive(void *opaque) |
| 172 | 198 |
{
|
| ... | ... | |
| 192 | 218 |
{
|
| 193 | 219 |
NE2000State *s = opaque; |
| 194 | 220 |
uint8_t *p; |
| 195 |
int total_len, next, avail, len, index; |
|
| 221 |
int total_len, next, avail, len, index, mcast_idx;
|
|
| 196 | 222 |
uint8_t buf1[60]; |
| 223 |
static const uint8_t broadcast_macaddr[6] = |
|
| 224 |
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
|
| 197 | 225 |
|
| 198 | 226 |
#if defined(DEBUG_NE2000) |
| 199 | 227 |
printf("NE2000: received len=%d\n", size);
|
| 200 | 228 |
#endif |
| 201 | 229 |
|
| 230 |
if (!ne2000_can_receive(s)) |
|
| 231 |
return; |
|
| 232 |
|
|
| 233 |
/* XXX: check this */ |
|
| 234 |
if (s->rxcr & 0x10) {
|
|
| 235 |
/* promiscuous: receive all */ |
|
| 236 |
} else {
|
|
| 237 |
if (!memcmp(buf, broadcast_macaddr, 6)) {
|
|
| 238 |
/* broadcast address */ |
|
| 239 |
if (!(s->rxcr & 0x04)) |
|
| 240 |
return; |
|
| 241 |
} else if (buf[0] & 0x01) {
|
|
| 242 |
/* multicast */ |
|
| 243 |
if (!(s->rxcr & 0x08)) |
|
| 244 |
return; |
|
| 245 |
mcast_idx = compute_mcast_idx(buf); |
|
| 246 |
if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) |
|
| 247 |
return; |
|
| 248 |
} else if (s->mem[0] == buf[0] && |
|
| 249 |
s->mem[2] == buf[1] && |
|
| 250 |
s->mem[4] == buf[2] && |
|
| 251 |
s->mem[6] == buf[3] && |
|
| 252 |
s->mem[8] == buf[4] && |
|
| 253 |
s->mem[10] == buf[5]) {
|
|
| 254 |
/* match */ |
|
| 255 |
} else {
|
|
| 256 |
return; |
|
| 257 |
} |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
|
|
| 202 | 261 |
/* if too small buffer, then expand it */ |
| 203 | 262 |
if (size < MIN_BUF_SIZE) {
|
| 204 | 263 |
memcpy(buf1, buf, size); |
| ... | ... | |
| 273 | 332 |
index -= NE2000_PMEM_SIZE; |
| 274 | 333 |
/* fail safe: check range on the transmitted length */ |
| 275 | 334 |
if (index + s->tcnt <= NE2000_PMEM_END) {
|
| 276 |
qemu_send_packet(s->nd, s->mem + index, s->tcnt);
|
|
| 335 |
qemu_send_packet(s->vc, s->mem + index, s->tcnt);
|
|
| 277 | 336 |
} |
| 278 | 337 |
/* signal end of transfert */ |
| 279 | 338 |
s->tsr = ENTSR_PTX; |
| ... | ... | |
| 320 | 379 |
case EN0_RCNTHI: |
| 321 | 380 |
s->rcnt = (s->rcnt & 0x00ff) | (val << 8); |
| 322 | 381 |
break; |
| 382 |
case EN0_RXCR: |
|
| 383 |
s->rxcr = val; |
|
| 384 |
break; |
|
| 323 | 385 |
case EN0_DCFG: |
| 324 | 386 |
s->dcfg = val; |
| 325 | 387 |
break; |
| ... | ... | |
| 608 | 670 |
return 0; |
| 609 | 671 |
} |
| 610 | 672 |
|
| 611 |
void isa_ne2000_init(int base, int irq, NetDriverState *nd)
|
|
| 673 |
void isa_ne2000_init(int base, int irq, NICInfo *nd)
|
|
| 612 | 674 |
{
|
| 613 | 675 |
NE2000State *s; |
| 614 |
|
|
| 676 |
|
|
| 615 | 677 |
s = qemu_mallocz(sizeof(NE2000State)); |
| 616 | 678 |
if (!s) |
| 617 | 679 |
return; |
| ... | ... | |
| 627 | 689 |
register_ioport_write(base + 0x1f, 1, 1, ne2000_reset_ioport_write, s); |
| 628 | 690 |
register_ioport_read(base + 0x1f, 1, 1, ne2000_reset_ioport_read, s); |
| 629 | 691 |
s->irq = irq; |
| 630 |
s->nd = nd;
|
|
| 692 |
memcpy(s->macaddr, nd->macaddr, 6);
|
|
| 631 | 693 |
|
| 632 | 694 |
ne2000_reset(s); |
| 633 | 695 |
|
| 634 |
qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s); |
|
| 635 |
|
|
| 696 |
s->vc = qemu_new_vlan_client(nd->vlan, ne2000_receive, s); |
|
| 697 |
|
|
| 698 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
|
| 699 |
"ne2000 macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
|
| 700 |
s->macaddr[0], |
|
| 701 |
s->macaddr[1], |
|
| 702 |
s->macaddr[2], |
|
| 703 |
s->macaddr[3], |
|
| 704 |
s->macaddr[4], |
|
| 705 |
s->macaddr[5]); |
|
| 706 |
|
|
| 636 | 707 |
register_savevm("ne2000", 0, 1, ne2000_save, ne2000_load, s);
|
| 637 |
|
|
| 638 | 708 |
} |
| 639 | 709 |
|
| 640 | 710 |
/***********************************************************/ |
| ... | ... | |
| 665 | 735 |
register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s); |
| 666 | 736 |
} |
| 667 | 737 |
|
| 668 |
void pci_ne2000_init(PCIBus *bus, NetDriverState *nd)
|
|
| 738 |
void pci_ne2000_init(PCIBus *bus, NICInfo *nd)
|
|
| 669 | 739 |
{
|
| 670 | 740 |
PCINE2000State *d; |
| 671 | 741 |
NE2000State *s; |
| ... | ... | |
| 690 | 760 |
s = &d->ne2000; |
| 691 | 761 |
s->irq = 16; // PCI interrupt |
| 692 | 762 |
s->pci_dev = (PCIDevice *)d; |
| 693 |
s->nd = nd;
|
|
| 763 |
memcpy(s->macaddr, nd->macaddr, 6);
|
|
| 694 | 764 |
ne2000_reset(s); |
| 695 |
qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s); |
|
| 696 |
|
|
| 765 |
s->vc = qemu_new_vlan_client(nd->vlan, ne2000_receive, s); |
|
| 766 |
|
|
| 767 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
|
| 768 |
"ne2000 pci macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
|
| 769 |
s->macaddr[0], |
|
| 770 |
s->macaddr[1], |
|
| 771 |
s->macaddr[2], |
|
| 772 |
s->macaddr[3], |
|
| 773 |
s->macaddr[4], |
|
| 774 |
s->macaddr[5]); |
|
| 775 |
|
|
| 697 | 776 |
/* XXX: instance number ? */ |
| 698 | 777 |
register_savevm("ne2000", 0, 1, ne2000_save, ne2000_load, s);
|
| 699 | 778 |
register_savevm("ne2000_pci", 0, 1, generic_pci_save, generic_pci_load,
|
Also available in: Unified diff