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Cleanup user space NMI injection
[qemu-kvm/fedora.git] / hw / ne2000.c
blob4efe7f3c1ffc7caadd9796cb12030bd3b02b04d6
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 "pc.h"
27 #include "net.h"
28
29 /* debug NE2000 card */
30 //#define DEBUG_NE2000
31
32 #define MAX_ETH_FRAME_SIZE 1514
33
34 #define E8390_CMD 0x00 /* The command register (for all pages) */
35 /* Page 0 register offsets. */
36 #define EN0_CLDALO 0x01 /* Low byte of current local dma addr RD */
37 #define EN0_STARTPG 0x01 /* Starting page of ring bfr WR */
38 #define EN0_CLDAHI 0x02 /* High byte of current local dma addr RD */
39 #define EN0_STOPPG 0x02 /* Ending page +1 of ring bfr WR */
40 #define EN0_BOUNDARY 0x03 /* Boundary page of ring bfr RD WR */
41 #define EN0_TSR 0x04 /* Transmit status reg RD */
42 #define EN0_TPSR 0x04 /* Transmit starting page WR */
43 #define EN0_NCR 0x05 /* Number of collision reg RD */
44 #define EN0_TCNTLO 0x05 /* Low byte of tx byte count WR */
45 #define EN0_FIFO 0x06 /* FIFO RD */
46 #define EN0_TCNTHI 0x06 /* High byte of tx byte count WR */
47 #define EN0_ISR 0x07 /* Interrupt status reg RD WR */
48 #define EN0_CRDALO 0x08 /* low byte of current remote dma address RD */
49 #define EN0_RSARLO 0x08 /* Remote start address reg 0 */
50 #define EN0_CRDAHI 0x09 /* high byte, current remote dma address RD */
51 #define EN0_RSARHI 0x09 /* Remote start address reg 1 */
52 #define EN0_RCNTLO 0x0a /* Remote byte count reg WR */
53 #define EN0_RTL8029ID0 0x0a /* Realtek ID byte #1 RD */
54 #define EN0_RCNTHI 0x0b /* Remote byte count reg WR */
55 #define EN0_RTL8029ID1 0x0b /* Realtek ID byte #2 RD */
56 #define EN0_RSR 0x0c /* rx status reg RD */
57 #define EN0_RXCR 0x0c /* RX configuration reg WR */
58 #define EN0_TXCR 0x0d /* TX configuration reg WR */
59 #define EN0_COUNTER0 0x0d /* Rcv alignment error counter RD */
60 #define EN0_DCFG 0x0e /* Data configuration reg WR */
61 #define EN0_COUNTER1 0x0e /* Rcv CRC error counter RD */
62 #define EN0_IMR 0x0f /* Interrupt mask reg WR */
63 #define EN0_COUNTER2 0x0f /* Rcv missed frame error counter RD */
64
65 #define EN1_PHYS 0x11
66 #define EN1_CURPAG 0x17
67 #define EN1_MULT 0x18
68
69 #define EN2_STARTPG 0x21 /* Starting page of ring bfr RD */
70 #define EN2_STOPPG 0x22 /* Ending page +1 of ring bfr RD */
71
72 #define EN3_CONFIG0 0x33
73 #define EN3_CONFIG1 0x34
74 #define EN3_CONFIG2 0x35
75 #define EN3_CONFIG3 0x36
76
77 /* Register accessed at EN_CMD, the 8390 base addr. */
78 #define E8390_STOP 0x01 /* Stop and reset the chip */
79 #define E8390_START 0x02 /* Start the chip, clear reset */
80 #define E8390_TRANS 0x04 /* Transmit a frame */
81 #define E8390_RREAD 0x08 /* Remote read */
82 #define E8390_RWRITE 0x10 /* Remote write */
83 #define E8390_NODMA 0x20 /* Remote DMA */
84 #define E8390_PAGE0 0x00 /* Select page chip registers */
85 #define E8390_PAGE1 0x40 /* using the two high-order bits */
86 #define E8390_PAGE2 0x80 /* Page 3 is invalid. */
87
88 /* Bits in EN0_ISR - Interrupt status register */
89 #define ENISR_RX 0x01 /* Receiver, no error */
90 #define ENISR_TX 0x02 /* Transmitter, no error */
91 #define ENISR_RX_ERR 0x04 /* Receiver, with error */
92 #define ENISR_TX_ERR 0x08 /* Transmitter, with error */
93 #define ENISR_OVER 0x10 /* Receiver overwrote the ring */
94 #define ENISR_COUNTERS 0x20 /* Counters need emptying */
95 #define ENISR_RDC 0x40 /* remote dma complete */
96 #define ENISR_RESET 0x80 /* Reset completed */
97 #define ENISR_ALL 0x3f /* Interrupts we will enable */
98
99 /* Bits in received packet status byte and EN0_RSR*/
100 #define ENRSR_RXOK 0x01 /* Received a good packet */
101 #define ENRSR_CRC 0x02 /* CRC error */
102 #define ENRSR_FAE 0x04 /* frame alignment error */
103 #define ENRSR_FO 0x08 /* FIFO overrun */
104 #define ENRSR_MPA 0x10 /* missed pkt */
105 #define ENRSR_PHY 0x20 /* physical/multicast address */
106 #define ENRSR_DIS 0x40 /* receiver disable. set in monitor mode */
107 #define ENRSR_DEF 0x80 /* deferring */
108
109 /* Transmitted packet status, EN0_TSR. */
110 #define ENTSR_PTX 0x01 /* Packet transmitted without error */
111 #define ENTSR_ND 0x02 /* The transmit wasn't deferred. */
112 #define ENTSR_COL 0x04 /* The transmit collided at least once. */
113 #define ENTSR_ABT 0x08 /* The transmit collided 16 times, and was deferred. */
114 #define ENTSR_CRS 0x10 /* The carrier sense was lost. */
115 #define ENTSR_FU 0x20 /* A "FIFO underrun" occurred during transmit. */
116 #define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */
117 #define ENTSR_OWC 0x80 /* There was an out-of-window collision. */
118
119 #define NE2000_PMEM_SIZE (32*1024)
120 #define NE2000_PMEM_START (16*1024)
121 #define NE2000_PMEM_END (NE2000_PMEM_SIZE+NE2000_PMEM_START)
122 #define NE2000_MEM_SIZE NE2000_PMEM_END
123
124 typedef struct NE2000State {
125 uint8_t cmd;
126 uint32_t start;
127 uint32_t stop;
128 uint8_t boundary;
129 uint8_t tsr;
130 uint8_t tpsr;
131 uint16_t tcnt;
132 uint16_t rcnt;
133 uint32_t rsar;
134 uint8_t rsr;
135 uint8_t rxcr;
136 uint8_t isr;
137 uint8_t dcfg;
138 uint8_t imr;
139 uint8_t phys[6]; /* mac address */
140 uint8_t curpag;
141 uint8_t mult[8]; /* multicast mask array */
142 qemu_irq irq;
143 PCIDevice *pci_dev;
144 VLANClientState *vc;
145 uint8_t macaddr[6];
146 uint8_t mem[NE2000_MEM_SIZE];
147 } NE2000State;
148
149 static void ne2000_reset(NE2000State *s)
150 {
151 int i;
152
153 s->isr = ENISR_RESET;
154 memcpy(s->mem, s->macaddr, 6);
155 s->mem[14] = 0x57;
156 s->mem[15] = 0x57;
157
158 /* duplicate prom data */
159 for(i = 15;i >= 0; i--) {
160 s->mem[2 * i] = s->mem[i];
161 s->mem[2 * i + 1] = s->mem[i];
162 }
163 }
164
165 static void ne2000_update_irq(NE2000State *s)
166 {
167 int isr;
168 isr = (s->isr & s->imr) & 0x7f;
169 #if defined(DEBUG_NE2000)
170 printf("NE2000: Set IRQ to %d (%02x %02x)\n",
171 isr ? 1 : 0, s->isr, s->imr);
172 #endif
173 qemu_set_irq(s->irq, (isr != 0));
174 }
175
176 #define POLYNOMIAL 0x04c11db6
177
178 /* From FreeBSD */
179 /* XXX: optimize */
180 static int compute_mcast_idx(const uint8_t *ep)
181 {
182 uint32_t crc;
183 int carry, i, j;
184 uint8_t b;
185
186 crc = 0xffffffff;
187 for (i = 0; i < 6; i++) {
188 b = *ep++;
189 for (j = 0; j < 8; j++) {
190 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
191 crc <<= 1;
192 b >>= 1;
193 if (carry)
194 crc = ((crc ^ POLYNOMIAL) | carry);
195 }
196 }
197 return (crc >> 26);
198 }
199
200 static int ne2000_buffer_full(NE2000State *s)
201 {
202 int avail, index, boundary;
203
204 index = s->curpag << 8;
205 boundary = s->boundary << 8;
206 if (index < boundary)
207 avail = boundary - index;
208 else
209 avail = (s->stop - s->start) - (index - boundary);
210 if (avail < (MAX_ETH_FRAME_SIZE + 4))
211 return 1;
212 return 0;
213 }
214
215 static int ne2000_can_receive(void *opaque)
216 {
217 NE2000State *s = opaque;
218
219 if (s->cmd & E8390_STOP)
220 return 1;
221 return !ne2000_buffer_full(s);
222 }
223
224 #define MIN_BUF_SIZE 60
225
226 static void ne2000_receive(void *opaque, const uint8_t *buf, int size)
227 {
228 NE2000State *s = opaque;
229 uint8_t *p;
230 unsigned int total_len, next, avail, len, index, mcast_idx;
231 uint8_t buf1[60];
232 static const uint8_t broadcast_macaddr[6] =
233 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
234
235 #if defined(DEBUG_NE2000)
236 printf("NE2000: received len=%d\n", size);
237 #endif
238
239 if (s->cmd & E8390_STOP || ne2000_buffer_full(s))
240 return;
241
242 /* XXX: check this */
243 if (s->rxcr & 0x10) {
244 /* promiscuous: receive all */
245 } else {
246 if (!memcmp(buf, broadcast_macaddr, 6)) {
247 /* broadcast address */
248 if (!(s->rxcr & 0x04))
249 return;
250 } else if (buf[0] & 0x01) {
251 /* multicast */
252 if (!(s->rxcr & 0x08))
253 return;
254 mcast_idx = compute_mcast_idx(buf);
255 if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
256 return;
257 } else if (s->mem[0] == buf[0] &&
258 s->mem[2] == buf[1] &&
259 s->mem[4] == buf[2] &&
260 s->mem[6] == buf[3] &&
261 s->mem[8] == buf[4] &&
262 s->mem[10] == buf[5]) {
263 /* match */
264 } else {
265 return;
266 }
267 }
268
269
270 /* if too small buffer, then expand it */
271 if (size < MIN_BUF_SIZE) {
272 memcpy(buf1, buf, size);
273 memset(buf1 + size, 0, MIN_BUF_SIZE - size);
274 buf = buf1;
275 size = MIN_BUF_SIZE;
276 }
277
278 index = s->curpag << 8;
279 /* 4 bytes for header */
280 total_len = size + 4;
281 /* address for next packet (4 bytes for CRC) */
282 next = index + ((total_len + 4 + 255) & ~0xff);
283 if (next >= s->stop)
284 next -= (s->stop - s->start);
285 /* prepare packet header */
286 p = s->mem + index;
287 s->rsr = ENRSR_RXOK; /* receive status */
288 /* XXX: check this */
289 if (buf[0] & 0x01)
290 s->rsr |= ENRSR_PHY;
291 p[0] = s->rsr;
292 p[1] = next >> 8;
293 p[2] = total_len;
294 p[3] = total_len >> 8;
295 index += 4;
296
297 /* write packet data */
298 while (size > 0) {
299 if (index <= s->stop)
300 avail = s->stop - index;
301 else
302 avail = 0;
303 len = size;
304 if (len > avail)
305 len = avail;
306 memcpy(s->mem + index, buf, len);
307 buf += len;
308 index += len;
309 if (index == s->stop)
310 index = s->start;
311 size -= len;
312 }
313 s->curpag = next >> 8;
314
315 /* now we can signal we have received something */
316 s->isr |= ENISR_RX;
317 ne2000_update_irq(s);
318 }
319
320 static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val)
321 {
322 NE2000State *s = opaque;
323 int offset, page, index;
324
325 addr &= 0xf;
326 #ifdef DEBUG_NE2000
327 printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
328 #endif
329 if (addr == E8390_CMD) {
330 /* control register */
331 s->cmd = val;
332 if (!(val & E8390_STOP)) { /* START bit makes no sense on RTL8029... */
333 s->isr &= ~ENISR_RESET;
334 /* test specific case: zero length transfer */
335 if ((val & (E8390_RREAD | E8390_RWRITE)) &&
336 s->rcnt == 0) {
337 s->isr |= ENISR_RDC;
338 ne2000_update_irq(s);
339 }
340 if (val & E8390_TRANS) {
341 index = (s->tpsr << 8);
342 /* XXX: next 2 lines are a hack to make netware 3.11 work */
343 if (index >= NE2000_PMEM_END)
344 index -= NE2000_PMEM_SIZE;
345 /* fail safe: check range on the transmitted length */
346 if (index + s->tcnt <= NE2000_PMEM_END) {
347 qemu_send_packet(s->vc, s->mem + index, s->tcnt);
348 }
349 /* signal end of transfer */
350 s->tsr = ENTSR_PTX;
351 s->isr |= ENISR_TX;
352 s->cmd &= ~E8390_TRANS;
353 ne2000_update_irq(s);
354 }
355 }
356 } else {
357 page = s->cmd >> 6;
358 offset = addr | (page << 4);
359 switch(offset) {
360 case EN0_STARTPG:
361 s->start = val << 8;
362 break;
363 case EN0_STOPPG:
364 s->stop = val << 8;
365 break;
366 case EN0_BOUNDARY:
367 s->boundary = val;
368 break;
369 case EN0_IMR:
370 s->imr = val;
371 ne2000_update_irq(s);
372 break;
373 case EN0_TPSR:
374 s->tpsr = val;
375 break;
376 case EN0_TCNTLO:
377 s->tcnt = (s->tcnt & 0xff00) | val;
378 break;
379 case EN0_TCNTHI:
380 s->tcnt = (s->tcnt & 0x00ff) | (val << 8);
381 break;
382 case EN0_RSARLO:
383 s->rsar = (s->rsar & 0xff00) | val;
384 break;
385 case EN0_RSARHI:
386 s->rsar = (s->rsar & 0x00ff) | (val << 8);
387 break;
388 case EN0_RCNTLO:
389 s->rcnt = (s->rcnt & 0xff00) | val;
390 break;
391 case EN0_RCNTHI:
392 s->rcnt = (s->rcnt & 0x00ff) | (val << 8);
393 break;
394 case EN0_RXCR:
395 s->rxcr = val;
396 break;
397 case EN0_DCFG:
398 s->dcfg = val;
399 break;
400 case EN0_ISR:
401 s->isr &= ~(val & 0x7f);
402 ne2000_update_irq(s);
403 break;
404 case EN1_PHYS ... EN1_PHYS + 5:
405 s->phys[offset - EN1_PHYS] = val;
406 break;
407 case EN1_CURPAG:
408 s->curpag = val;
409 break;
410 case EN1_MULT ... EN1_MULT + 7:
411 s->mult[offset - EN1_MULT] = val;
412 break;
413 }
414 }
415 }
416
417 static uint32_t ne2000_ioport_read(void *opaque, uint32_t addr)
418 {
419 NE2000State *s = opaque;
420 int offset, page, ret;
421
422 addr &= 0xf;
423 if (addr == E8390_CMD) {
424 ret = s->cmd;
425 } else {
426 page = s->cmd >> 6;
427 offset = addr | (page << 4);
428 switch(offset) {
429 case EN0_TSR:
430 ret = s->tsr;
431 break;
432 case EN0_BOUNDARY:
433 ret = s->boundary;
434 break;
435 case EN0_ISR:
436 ret = s->isr;
437 break;
438 case EN0_RSARLO:
439 ret = s->rsar & 0x00ff;
440 break;
441 case EN0_RSARHI:
442 ret = s->rsar >> 8;
443 break;
444 case EN1_PHYS ... EN1_PHYS + 5:
445 ret = s->phys[offset - EN1_PHYS];
446 break;
447 case EN1_CURPAG:
448 ret = s->curpag;
449 break;
450 case EN1_MULT ... EN1_MULT + 7:
451 ret = s->mult[offset - EN1_MULT];
452 break;
453 case EN0_RSR:
454 ret = s->rsr;
455 break;
456 case EN2_STARTPG:
457 ret = s->start >> 8;
458 break;
459 case EN2_STOPPG:
460 ret = s->stop >> 8;
461 break;
462 case EN0_RTL8029ID0:
463 ret = 0x50;
464 break;
465 case EN0_RTL8029ID1:
466 ret = 0x43;
467 break;
468 case EN3_CONFIG0:
469 ret = 0; /* 10baseT media */
470 break;
471 case EN3_CONFIG2:
472 ret = 0x40; /* 10baseT active */
473 break;
474 case EN3_CONFIG3:
475 ret = 0x40; /* Full duplex */
476 break;
477 default:
478 ret = 0x00;
479 break;
480 }
481 }
482 #ifdef DEBUG_NE2000
483 printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
484 #endif
485 return ret;
486 }
487
488 static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr,
489 uint32_t val)
490 {
491 if (addr < 32 ||
492 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
493 s->mem[addr] = val;
494 }
495 }
496
497 static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr,
498 uint32_t val)
499 {
500 addr &= ~1; /* XXX: check exact behaviour if not even */
501 if (addr < 32 ||
502 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
503 *(uint16_t *)(s->mem + addr) = cpu_to_le16(val);
504 }
505 }
506
507 static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr,
508 uint32_t val)
509 {
510 addr &= ~1; /* XXX: check exact behaviour if not even */
511 if (addr < 32 ||
512 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
513 cpu_to_le32wu((uint32_t *)(s->mem + addr), val);
514 }
515 }
516
517 static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr)
518 {
519 if (addr < 32 ||
520 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
521 return s->mem[addr];
522 } else {
523 return 0xff;
524 }
525 }
526
527 static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr)
528 {
529 addr &= ~1; /* XXX: check exact behaviour if not even */
530 if (addr < 32 ||
531 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
532 return le16_to_cpu(*(uint16_t *)(s->mem + addr));
533 } else {
534 return 0xffff;
535 }
536 }
537
538 static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
539 {
540 addr &= ~1; /* XXX: check exact behaviour if not even */
541 if (addr < 32 ||
542 (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
543 return le32_to_cpupu((uint32_t *)(s->mem + addr));
544 } else {
545 return 0xffffffff;
546 }
547 }
548
549 static inline void ne2000_dma_update(NE2000State *s, int len)
550 {
551 s->rsar += len;
552 /* wrap */
553 /* XXX: check what to do if rsar > stop */
554 if (s->rsar == s->stop)
555 s->rsar = s->start;
556
557 if (s->rcnt <= len) {
558 s->rcnt = 0;
559 /* signal end of transfer */
560 s->isr |= ENISR_RDC;
561 ne2000_update_irq(s);
562 } else {
563 s->rcnt -= len;
564 }
565 }
566
567 static void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
568 {
569 NE2000State *s = opaque;
570
571 #ifdef DEBUG_NE2000
572 printf("NE2000: asic write val=0x%04x\n", val);
573 #endif
574 if (s->rcnt == 0)
575 return;
576 if (s->dcfg & 0x01) {
577 /* 16 bit access */
578 ne2000_mem_writew(s, s->rsar, val);
579 ne2000_dma_update(s, 2);
580 } else {
581 /* 8 bit access */
582 ne2000_mem_writeb(s, s->rsar, val);
583 ne2000_dma_update(s, 1);
584 }
585 }
586
587 static uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr)
588 {
589 NE2000State *s = opaque;
590 int ret;
591
592 if (s->dcfg & 0x01) {
593 /* 16 bit access */
594 ret = ne2000_mem_readw(s, s->rsar);
595 ne2000_dma_update(s, 2);
596 } else {
597 /* 8 bit access */
598 ret = ne2000_mem_readb(s, s->rsar);
599 ne2000_dma_update(s, 1);
600 }
601 #ifdef DEBUG_NE2000
602 printf("NE2000: asic read val=0x%04x\n", ret);
603 #endif
604 return ret;
605 }
606
607 static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
608 {
609 NE2000State *s = opaque;
610
611 #ifdef DEBUG_NE2000
612 printf("NE2000: asic writel val=0x%04x\n", val);
613 #endif
614 if (s->rcnt == 0)
615 return;
616 /* 32 bit access */
617 ne2000_mem_writel(s, s->rsar, val);
618 ne2000_dma_update(s, 4);
619 }
620
621 static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr)
622 {
623 NE2000State *s = opaque;
624 int ret;
625
626 /* 32 bit access */
627 ret = ne2000_mem_readl(s, s->rsar);
628 ne2000_dma_update(s, 4);
629 #ifdef DEBUG_NE2000
630 printf("NE2000: asic readl val=0x%04x\n", ret);
631 #endif
632 return ret;
633 }
634
635 static void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val)
636 {
637 /* nothing to do (end of reset pulse) */
638 }
639
640 static uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr)
641 {
642 NE2000State *s = opaque;
643 ne2000_reset(s);
644 return 0;
645 }
646
647 static void ne2000_save(QEMUFile* f,void* opaque)
648 {
649 NE2000State* s=(NE2000State*)opaque;
650 uint32_t tmp;
651
652 if (s->pci_dev)
653 pci_device_save(s->pci_dev, f);
654
655 qemu_put_8s(f, &s->rxcr);
656
657 qemu_put_8s(f, &s->cmd);
658 qemu_put_be32s(f, &s->start);
659 qemu_put_be32s(f, &s->stop);
660 qemu_put_8s(f, &s->boundary);
661 qemu_put_8s(f, &s->tsr);
662 qemu_put_8s(f, &s->tpsr);
663 qemu_put_be16s(f, &s->tcnt);
664 qemu_put_be16s(f, &s->rcnt);
665 qemu_put_be32s(f, &s->rsar);
666 qemu_put_8s(f, &s->rsr);
667 qemu_put_8s(f, &s->isr);
668 qemu_put_8s(f, &s->dcfg);
669 qemu_put_8s(f, &s->imr);
670 qemu_put_buffer(f, s->phys, 6);
671 qemu_put_8s(f, &s->curpag);
672 qemu_put_buffer(f, s->mult, 8);
673 tmp = 0;
674 qemu_put_be32s(f, &tmp); /* ignored, was irq */
675 qemu_put_buffer(f, s->mem, NE2000_MEM_SIZE);
676 }
677
678 static int ne2000_load(QEMUFile* f,void* opaque,int version_id)
679 {
680 NE2000State* s=(NE2000State*)opaque;
681 int ret;
682 uint32_t tmp;
683
684 if (version_id > 3)
685 return -EINVAL;
686
687 if (s->pci_dev && version_id >= 3) {
688 ret = pci_device_load(s->pci_dev, f);
689 if (ret < 0)
690 return ret;
691 }
692
693 if (version_id >= 2) {
694 qemu_get_8s(f, &s->rxcr);
695 } else {
696 s->rxcr = 0x0c;
697 }
698
699 qemu_get_8s(f, &s->cmd);
700 qemu_get_be32s(f, &s->start);
701 qemu_get_be32s(f, &s->stop);
702 qemu_get_8s(f, &s->boundary);
703 qemu_get_8s(f, &s->tsr);
704 qemu_get_8s(f, &s->tpsr);
705 qemu_get_be16s(f, &s->tcnt);
706 qemu_get_be16s(f, &s->rcnt);
707 qemu_get_be32s(f, &s->rsar);
708 qemu_get_8s(f, &s->rsr);
709 qemu_get_8s(f, &s->isr);
710 qemu_get_8s(f, &s->dcfg);
711 qemu_get_8s(f, &s->imr);
712 qemu_get_buffer(f, s->phys, 6);
713 qemu_get_8s(f, &s->curpag);
714 qemu_get_buffer(f, s->mult, 8);
715 qemu_get_be32s(f, &tmp); /* ignored */
716 qemu_get_buffer(f, s->mem, NE2000_MEM_SIZE);
717
718 return 0;
719 }
720
721 void isa_ne2000_init(int base, qemu_irq irq, NICInfo *nd)
722 {
723 NE2000State *s;
724
725 s = qemu_mallocz(sizeof(NE2000State));
726 if (!s)
727 return;
728
729 register_ioport_write(base, 16, 1, ne2000_ioport_write, s);
730 register_ioport_read(base, 16, 1, ne2000_ioport_read, s);
731
732 register_ioport_write(base + 0x10, 1, 1, ne2000_asic_ioport_write, s);
733 register_ioport_read(base + 0x10, 1, 1, ne2000_asic_ioport_read, s);
734 register_ioport_write(base + 0x10, 2, 2, ne2000_asic_ioport_write, s);
735 register_ioport_read(base + 0x10, 2, 2, ne2000_asic_ioport_read, s);
736
737 register_ioport_write(base + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
738 register_ioport_read(base + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
739 s->irq = irq;
740 memcpy(s->macaddr, nd->macaddr, 6);
741
742 ne2000_reset(s);
743
744 s->vc = qemu_new_vlan_client(nd->vlan, ne2000_receive,
745 ne2000_can_receive, s);
746
747 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
748 "ne2000 macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
749 s->macaddr[0],
750 s->macaddr[1],
751 s->macaddr[2],
752 s->macaddr[3],
753 s->macaddr[4],
754 s->macaddr[5]);
755
756 register_savevm("ne2000", -1, 2, ne2000_save, ne2000_load, s);
757 }
758
759 /***********************************************************/
760 /* PCI NE2000 definitions */
761
762 typedef struct PCINE2000State {
763 PCIDevice dev;
764 NE2000State ne2000;
765 } PCINE2000State;
766
767 static void ne2000_map(PCIDevice *pci_dev, int region_num,
768 uint32_t addr, uint32_t size, int type)
769 {
770 PCINE2000State *d = (PCINE2000State *)pci_dev;
771 NE2000State *s = &d->ne2000;
772
773 register_ioport_write(addr, 16, 1, ne2000_ioport_write, s);
774 register_ioport_read(addr, 16, 1, ne2000_ioport_read, s);
775
776 register_ioport_write(addr + 0x10, 1, 1, ne2000_asic_ioport_write, s);
777 register_ioport_read(addr + 0x10, 1, 1, ne2000_asic_ioport_read, s);
778 register_ioport_write(addr + 0x10, 2, 2, ne2000_asic_ioport_write, s);
779 register_ioport_read(addr + 0x10, 2, 2, ne2000_asic_ioport_read, s);
780 register_ioport_write(addr + 0x10, 4, 4, ne2000_asic_ioport_writel, s);
781 register_ioport_read(addr + 0x10, 4, 4, ne2000_asic_ioport_readl, s);
782
783 register_ioport_write(addr + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
784 register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
785 }
786
787 PCIDevice *pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn)
788 {
789 PCINE2000State *d;
790 NE2000State *s;
791 uint8_t *pci_conf;
792
793 d = (PCINE2000State *)pci_register_device(bus,
794 "NE2000", sizeof(PCINE2000State),
795 devfn,
796 NULL, NULL);
797 if (!d)
798 return NULL;
799
800 pci_conf = d->dev.config;
801 pci_conf[0x00] = 0xec; // Realtek 8029
802 pci_conf[0x01] = 0x10;
803 pci_conf[0x02] = 0x29;
804 pci_conf[0x03] = 0x80;
805 pci_conf[0x0a] = 0x00; // ethernet network controller
806 pci_conf[0x0b] = 0x02;
807 pci_conf[0x0e] = 0x00; // header_type
808 pci_conf[0x3d] = 1; // interrupt pin 0
809
810 pci_register_io_region(&d->dev, 0, 0x100,
811 PCI_ADDRESS_SPACE_IO, ne2000_map);
812 s = &d->ne2000;
813 s->irq = d->dev.irq[0];
814 s->pci_dev = (PCIDevice *)d;
815 memcpy(s->macaddr, nd->macaddr, 6);
816 ne2000_reset(s);
817 s->vc = qemu_new_vlan_client(nd->vlan, ne2000_receive,
818 ne2000_can_receive, s);
819
820 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
821 "ne2000 pci macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
822 s->macaddr[0],
823 s->macaddr[1],
824 s->macaddr[2],
825 s->macaddr[3],
826 s->macaddr[4],
827 s->macaddr[5]);
828
829 register_savevm("ne2000", -1, 3, ne2000_save, ne2000_load, s);
830
831 return (PCIDevice *)d;
832 }
Patches shipped by Fedora