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target/mips: Remove XBurst Media eXtension Unit dead code
[qemu/ar7.git] / hw / net / lan9118.c
blobabc796285ab13a01ddeadaa13f86415e3809f567
1 /*
2 * SMSC LAN9118 Ethernet interface emulation
3 *
4 * Copyright (c) 2009 CodeSourcery, LLC.
5 * Written by Paul Brook
6 *
7 * This code is licensed under the GNU GPL v2
8 *
9 * Contributions after 2012-01-13 are licensed under the terms of the
10 * GNU GPL, version 2 or (at your option) any later version.
11 */
12
13 #include "qemu/osdep.h"
14 #include "hw/sysbus.h"
15 #include "migration/vmstate.h"
16 #include "net/net.h"
17 #include "net/eth.h"
18 #include "hw/hw.h"
19 #include "hw/irq.h"
20 #include "hw/net/lan9118.h"
21 #include "hw/ptimer.h"
22 #include "hw/qdev-properties.h"
23 #include "qapi/error.h"
24 #include "qemu/log.h"
25 #include "qemu/module.h"
26 /* For crc32 */
27 #include <zlib.h>
28 #include "qom/object.h"
29
30 //#define DEBUG_LAN9118
31
32 #ifdef DEBUG_LAN9118
33 #define DPRINTF(fmt, ...) \
34 do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0)
35 #define BADF(fmt, ...) \
36 do { hw_error("lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
37 #else
38 #define DPRINTF(fmt, ...) do {} while(0)
39 #define BADF(fmt, ...) \
40 do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
41 #endif
42
43 /* The tx and rx fifo ports are a range of aliased 32-bit registers */
44 #define RX_DATA_FIFO_PORT_FIRST 0x00
45 #define RX_DATA_FIFO_PORT_LAST 0x1f
46 #define TX_DATA_FIFO_PORT_FIRST 0x20
47 #define TX_DATA_FIFO_PORT_LAST 0x3f
48
49 #define RX_STATUS_FIFO_PORT 0x40
50 #define RX_STATUS_FIFO_PEEK 0x44
51 #define TX_STATUS_FIFO_PORT 0x48
52 #define TX_STATUS_FIFO_PEEK 0x4c
53
54 #define CSR_ID_REV 0x50
55 #define CSR_IRQ_CFG 0x54
56 #define CSR_INT_STS 0x58
57 #define CSR_INT_EN 0x5c
58 #define CSR_BYTE_TEST 0x64
59 #define CSR_FIFO_INT 0x68
60 #define CSR_RX_CFG 0x6c
61 #define CSR_TX_CFG 0x70
62 #define CSR_HW_CFG 0x74
63 #define CSR_RX_DP_CTRL 0x78
64 #define CSR_RX_FIFO_INF 0x7c
65 #define CSR_TX_FIFO_INF 0x80
66 #define CSR_PMT_CTRL 0x84
67 #define CSR_GPIO_CFG 0x88
68 #define CSR_GPT_CFG 0x8c
69 #define CSR_GPT_CNT 0x90
70 #define CSR_WORD_SWAP 0x98
71 #define CSR_FREE_RUN 0x9c
72 #define CSR_RX_DROP 0xa0
73 #define CSR_MAC_CSR_CMD 0xa4
74 #define CSR_MAC_CSR_DATA 0xa8
75 #define CSR_AFC_CFG 0xac
76 #define CSR_E2P_CMD 0xb0
77 #define CSR_E2P_DATA 0xb4
78
79 #define E2P_CMD_MAC_ADDR_LOADED 0x100
80
81 /* IRQ_CFG */
82 #define IRQ_INT 0x00001000
83 #define IRQ_EN 0x00000100
84 #define IRQ_POL 0x00000010
85 #define IRQ_TYPE 0x00000001
86
87 /* INT_STS/INT_EN */
88 #define SW_INT 0x80000000
89 #define TXSTOP_INT 0x02000000
90 #define RXSTOP_INT 0x01000000
91 #define RXDFH_INT 0x00800000
92 #define TX_IOC_INT 0x00200000
93 #define RXD_INT 0x00100000
94 #define GPT_INT 0x00080000
95 #define PHY_INT 0x00040000
96 #define PME_INT 0x00020000
97 #define TXSO_INT 0x00010000
98 #define RWT_INT 0x00008000
99 #define RXE_INT 0x00004000
100 #define TXE_INT 0x00002000
101 #define TDFU_INT 0x00000800
102 #define TDFO_INT 0x00000400
103 #define TDFA_INT 0x00000200
104 #define TSFF_INT 0x00000100
105 #define TSFL_INT 0x00000080
106 #define RXDF_INT 0x00000040
107 #define RDFL_INT 0x00000020
108 #define RSFF_INT 0x00000010
109 #define RSFL_INT 0x00000008
110 #define GPIO2_INT 0x00000004
111 #define GPIO1_INT 0x00000002
112 #define GPIO0_INT 0x00000001
113 #define RESERVED_INT 0x7c001000
114
115 #define MAC_CR 1
116 #define MAC_ADDRH 2
117 #define MAC_ADDRL 3
118 #define MAC_HASHH 4
119 #define MAC_HASHL 5
120 #define MAC_MII_ACC 6
121 #define MAC_MII_DATA 7
122 #define MAC_FLOW 8
123 #define MAC_VLAN1 9 /* TODO */
124 #define MAC_VLAN2 10 /* TODO */
125 #define MAC_WUFF 11 /* TODO */
126 #define MAC_WUCSR 12 /* TODO */
127
128 #define MAC_CR_RXALL 0x80000000
129 #define MAC_CR_RCVOWN 0x00800000
130 #define MAC_CR_LOOPBK 0x00200000
131 #define MAC_CR_FDPX 0x00100000
132 #define MAC_CR_MCPAS 0x00080000
133 #define MAC_CR_PRMS 0x00040000
134 #define MAC_CR_INVFILT 0x00020000
135 #define MAC_CR_PASSBAD 0x00010000
136 #define MAC_CR_HO 0x00008000
137 #define MAC_CR_HPFILT 0x00002000
138 #define MAC_CR_LCOLL 0x00001000
139 #define MAC_CR_BCAST 0x00000800
140 #define MAC_CR_DISRTY 0x00000400
141 #define MAC_CR_PADSTR 0x00000100
142 #define MAC_CR_BOLMT 0x000000c0
143 #define MAC_CR_DFCHK 0x00000020
144 #define MAC_CR_TXEN 0x00000008
145 #define MAC_CR_RXEN 0x00000004
146 #define MAC_CR_RESERVED 0x7f404213
147
148 #define PHY_INT_ENERGYON 0x80
149 #define PHY_INT_AUTONEG_COMPLETE 0x40
150 #define PHY_INT_FAULT 0x20
151 #define PHY_INT_DOWN 0x10
152 #define PHY_INT_AUTONEG_LP 0x08
153 #define PHY_INT_PARFAULT 0x04
154 #define PHY_INT_AUTONEG_PAGE 0x02
155
156 #define GPT_TIMER_EN 0x20000000
157
158 enum tx_state {
159 TX_IDLE,
160 TX_B,
161 TX_DATA
162 };
163
164 typedef struct {
165 /* state is a tx_state but we can't put enums in VMStateDescriptions. */
166 uint32_t state;
167 uint32_t cmd_a;
168 uint32_t cmd_b;
169 int32_t buffer_size;
170 int32_t offset;
171 int32_t pad;
172 int32_t fifo_used;
173 int32_t len;
174 uint8_t data[2048];
175 } LAN9118Packet;
176
177 static const VMStateDescription vmstate_lan9118_packet = {
178 .name = "lan9118_packet",
179 .version_id = 1,
180 .minimum_version_id = 1,
181 .fields = (VMStateField[]) {
182 VMSTATE_UINT32(state, LAN9118Packet),
183 VMSTATE_UINT32(cmd_a, LAN9118Packet),
184 VMSTATE_UINT32(cmd_b, LAN9118Packet),
185 VMSTATE_INT32(buffer_size, LAN9118Packet),
186 VMSTATE_INT32(offset, LAN9118Packet),
187 VMSTATE_INT32(pad, LAN9118Packet),
188 VMSTATE_INT32(fifo_used, LAN9118Packet),
189 VMSTATE_INT32(len, LAN9118Packet),
190 VMSTATE_UINT8_ARRAY(data, LAN9118Packet, 2048),
191 VMSTATE_END_OF_LIST()
192 }
193 };
194
195 OBJECT_DECLARE_SIMPLE_TYPE(lan9118_state, LAN9118)
196
197 struct lan9118_state {
198 SysBusDevice parent_obj;
199
200 NICState *nic;
201 NICConf conf;
202 qemu_irq irq;
203 MemoryRegion mmio;
204 ptimer_state *timer;
205
206 uint32_t irq_cfg;
207 uint32_t int_sts;
208 uint32_t int_en;
209 uint32_t fifo_int;
210 uint32_t rx_cfg;
211 uint32_t tx_cfg;
212 uint32_t hw_cfg;
213 uint32_t pmt_ctrl;
214 uint32_t gpio_cfg;
215 uint32_t gpt_cfg;
216 uint32_t word_swap;
217 uint32_t free_timer_start;
218 uint32_t mac_cmd;
219 uint32_t mac_data;
220 uint32_t afc_cfg;
221 uint32_t e2p_cmd;
222 uint32_t e2p_data;
223
224 uint32_t mac_cr;
225 uint32_t mac_hashh;
226 uint32_t mac_hashl;
227 uint32_t mac_mii_acc;
228 uint32_t mac_mii_data;
229 uint32_t mac_flow;
230
231 uint32_t phy_status;
232 uint32_t phy_control;
233 uint32_t phy_advertise;
234 uint32_t phy_int;
235 uint32_t phy_int_mask;
236
237 int32_t eeprom_writable;
238 uint8_t eeprom[128];
239
240 int32_t tx_fifo_size;
241 LAN9118Packet *txp;
242 LAN9118Packet tx_packet;
243
244 int32_t tx_status_fifo_used;
245 int32_t tx_status_fifo_head;
246 uint32_t tx_status_fifo[512];
247
248 int32_t rx_status_fifo_size;
249 int32_t rx_status_fifo_used;
250 int32_t rx_status_fifo_head;
251 uint32_t rx_status_fifo[896];
252 int32_t rx_fifo_size;
253 int32_t rx_fifo_used;
254 int32_t rx_fifo_head;
255 uint32_t rx_fifo[3360];
256 int32_t rx_packet_size_head;
257 int32_t rx_packet_size_tail;
258 int32_t rx_packet_size[1024];
259
260 int32_t rxp_offset;
261 int32_t rxp_size;
262 int32_t rxp_pad;
263
264 uint32_t write_word_prev_offset;
265 uint32_t write_word_n;
266 uint16_t write_word_l;
267 uint16_t write_word_h;
268 uint32_t read_word_prev_offset;
269 uint32_t read_word_n;
270 uint32_t read_long;
271
272 uint32_t mode_16bit;
273 };
274
275 static const VMStateDescription vmstate_lan9118 = {
276 .name = "lan9118",
277 .version_id = 2,
278 .minimum_version_id = 1,
279 .fields = (VMStateField[]) {
280 VMSTATE_PTIMER(timer, lan9118_state),
281 VMSTATE_UINT32(irq_cfg, lan9118_state),
282 VMSTATE_UINT32(int_sts, lan9118_state),
283 VMSTATE_UINT32(int_en, lan9118_state),
284 VMSTATE_UINT32(fifo_int, lan9118_state),
285 VMSTATE_UINT32(rx_cfg, lan9118_state),
286 VMSTATE_UINT32(tx_cfg, lan9118_state),
287 VMSTATE_UINT32(hw_cfg, lan9118_state),
288 VMSTATE_UINT32(pmt_ctrl, lan9118_state),
289 VMSTATE_UINT32(gpio_cfg, lan9118_state),
290 VMSTATE_UINT32(gpt_cfg, lan9118_state),
291 VMSTATE_UINT32(word_swap, lan9118_state),
292 VMSTATE_UINT32(free_timer_start, lan9118_state),
293 VMSTATE_UINT32(mac_cmd, lan9118_state),
294 VMSTATE_UINT32(mac_data, lan9118_state),
295 VMSTATE_UINT32(afc_cfg, lan9118_state),
296 VMSTATE_UINT32(e2p_cmd, lan9118_state),
297 VMSTATE_UINT32(e2p_data, lan9118_state),
298 VMSTATE_UINT32(mac_cr, lan9118_state),
299 VMSTATE_UINT32(mac_hashh, lan9118_state),
300 VMSTATE_UINT32(mac_hashl, lan9118_state),
301 VMSTATE_UINT32(mac_mii_acc, lan9118_state),
302 VMSTATE_UINT32(mac_mii_data, lan9118_state),
303 VMSTATE_UINT32(mac_flow, lan9118_state),
304 VMSTATE_UINT32(phy_status, lan9118_state),
305 VMSTATE_UINT32(phy_control, lan9118_state),
306 VMSTATE_UINT32(phy_advertise, lan9118_state),
307 VMSTATE_UINT32(phy_int, lan9118_state),
308 VMSTATE_UINT32(phy_int_mask, lan9118_state),
309 VMSTATE_INT32(eeprom_writable, lan9118_state),
310 VMSTATE_UINT8_ARRAY(eeprom, lan9118_state, 128),
311 VMSTATE_INT32(tx_fifo_size, lan9118_state),
312 /* txp always points at tx_packet so need not be saved */
313 VMSTATE_STRUCT(tx_packet, lan9118_state, 0,
314 vmstate_lan9118_packet, LAN9118Packet),
315 VMSTATE_INT32(tx_status_fifo_used, lan9118_state),
316 VMSTATE_INT32(tx_status_fifo_head, lan9118_state),
317 VMSTATE_UINT32_ARRAY(tx_status_fifo, lan9118_state, 512),
318 VMSTATE_INT32(rx_status_fifo_size, lan9118_state),
319 VMSTATE_INT32(rx_status_fifo_used, lan9118_state),
320 VMSTATE_INT32(rx_status_fifo_head, lan9118_state),
321 VMSTATE_UINT32_ARRAY(rx_status_fifo, lan9118_state, 896),
322 VMSTATE_INT32(rx_fifo_size, lan9118_state),
323 VMSTATE_INT32(rx_fifo_used, lan9118_state),
324 VMSTATE_INT32(rx_fifo_head, lan9118_state),
325 VMSTATE_UINT32_ARRAY(rx_fifo, lan9118_state, 3360),
326 VMSTATE_INT32(rx_packet_size_head, lan9118_state),
327 VMSTATE_INT32(rx_packet_size_tail, lan9118_state),
328 VMSTATE_INT32_ARRAY(rx_packet_size, lan9118_state, 1024),
329 VMSTATE_INT32(rxp_offset, lan9118_state),
330 VMSTATE_INT32(rxp_size, lan9118_state),
331 VMSTATE_INT32(rxp_pad, lan9118_state),
332 VMSTATE_UINT32_V(write_word_prev_offset, lan9118_state, 2),
333 VMSTATE_UINT32_V(write_word_n, lan9118_state, 2),
334 VMSTATE_UINT16_V(write_word_l, lan9118_state, 2),
335 VMSTATE_UINT16_V(write_word_h, lan9118_state, 2),
336 VMSTATE_UINT32_V(read_word_prev_offset, lan9118_state, 2),
337 VMSTATE_UINT32_V(read_word_n, lan9118_state, 2),
338 VMSTATE_UINT32_V(read_long, lan9118_state, 2),
339 VMSTATE_UINT32_V(mode_16bit, lan9118_state, 2),
340 VMSTATE_END_OF_LIST()
341 }
342 };
343
344 static void lan9118_update(lan9118_state *s)
345 {
346 int level;
347
348 /* TODO: Implement FIFO level IRQs. */
349 level = (s->int_sts & s->int_en) != 0;
350 if (level) {
351 s->irq_cfg |= IRQ_INT;
352 } else {
353 s->irq_cfg &= ~IRQ_INT;
354 }
355 if ((s->irq_cfg & IRQ_EN) == 0) {
356 level = 0;
357 }
358 if ((s->irq_cfg & (IRQ_TYPE | IRQ_POL)) != (IRQ_TYPE | IRQ_POL)) {
359 /* Interrupt is active low unless we're configured as
360 * active-high polarity, push-pull type.
361 */
362 level = !level;
363 }
364 qemu_set_irq(s->irq, level);
365 }
366
367 static void lan9118_mac_changed(lan9118_state *s)
368 {
369 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
370 }
371
372 static void lan9118_reload_eeprom(lan9118_state *s)
373 {
374 int i;
375 if (s->eeprom[0] != 0xa5) {
376 s->e2p_cmd &= ~E2P_CMD_MAC_ADDR_LOADED;
377 DPRINTF("MACADDR load failed\n");
378 return;
379 }
380 for (i = 0; i < 6; i++) {
381 s->conf.macaddr.a[i] = s->eeprom[i + 1];
382 }
383 s->e2p_cmd |= E2P_CMD_MAC_ADDR_LOADED;
384 DPRINTF("MACADDR loaded from eeprom\n");
385 lan9118_mac_changed(s);
386 }
387
388 static void phy_update_irq(lan9118_state *s)
389 {
390 if (s->phy_int & s->phy_int_mask) {
391 s->int_sts |= PHY_INT;
392 } else {
393 s->int_sts &= ~PHY_INT;
394 }
395 lan9118_update(s);
396 }
397
398 static void phy_update_link(lan9118_state *s)
399 {
400 /* Autonegotiation status mirrors link status. */
401 if (qemu_get_queue(s->nic)->link_down) {
402 s->phy_status &= ~0x0024;
403 s->phy_int |= PHY_INT_DOWN;
404 } else {
405 s->phy_status |= 0x0024;
406 s->phy_int |= PHY_INT_ENERGYON;
407 s->phy_int |= PHY_INT_AUTONEG_COMPLETE;
408 }
409 phy_update_irq(s);
410 }
411
412 static void lan9118_set_link(NetClientState *nc)
413 {
414 phy_update_link(qemu_get_nic_opaque(nc));
415 }
416
417 static void phy_reset(lan9118_state *s)
418 {
419 s->phy_status = 0x7809;
420 s->phy_control = 0x3000;
421 s->phy_advertise = 0x01e1;
422 s->phy_int_mask = 0;
423 s->phy_int = 0;
424 phy_update_link(s);
425 }
426
427 static void lan9118_reset(DeviceState *d)
428 {
429 lan9118_state *s = LAN9118(d);
430
431 s->irq_cfg &= (IRQ_TYPE | IRQ_POL);
432 s->int_sts = 0;
433 s->int_en = 0;
434 s->fifo_int = 0x48000000;
435 s->rx_cfg = 0;
436 s->tx_cfg = 0;
437 s->hw_cfg = s->mode_16bit ? 0x00050000 : 0x00050004;
438 s->pmt_ctrl &= 0x45;
439 s->gpio_cfg = 0;
440 s->txp->fifo_used = 0;
441 s->txp->state = TX_IDLE;
442 s->txp->cmd_a = 0xffffffffu;
443 s->txp->cmd_b = 0xffffffffu;
444 s->txp->len = 0;
445 s->txp->fifo_used = 0;
446 s->tx_fifo_size = 4608;
447 s->tx_status_fifo_used = 0;
448 s->rx_status_fifo_size = 704;
449 s->rx_fifo_size = 2640;
450 s->rx_fifo_used = 0;
451 s->rx_status_fifo_size = 176;
452 s->rx_status_fifo_used = 0;
453 s->rxp_offset = 0;
454 s->rxp_size = 0;
455 s->rxp_pad = 0;
456 s->rx_packet_size_tail = s->rx_packet_size_head;
457 s->rx_packet_size[s->rx_packet_size_head] = 0;
458 s->mac_cmd = 0;
459 s->mac_data = 0;
460 s->afc_cfg = 0;
461 s->e2p_cmd = 0;
462 s->e2p_data = 0;
463 s->free_timer_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 40;
464
465 ptimer_transaction_begin(s->timer);
466 ptimer_stop(s->timer);
467 ptimer_set_count(s->timer, 0xffff);
468 ptimer_transaction_commit(s->timer);
469 s->gpt_cfg = 0xffff;
470
471 s->mac_cr = MAC_CR_PRMS;
472 s->mac_hashh = 0;
473 s->mac_hashl = 0;
474 s->mac_mii_acc = 0;
475 s->mac_mii_data = 0;
476 s->mac_flow = 0;
477
478 s->read_word_n = 0;
479 s->write_word_n = 0;
480
481 phy_reset(s);
482
483 s->eeprom_writable = 0;
484 lan9118_reload_eeprom(s);
485 }
486
487 static void rx_fifo_push(lan9118_state *s, uint32_t val)
488 {
489 int fifo_pos;
490 fifo_pos = s->rx_fifo_head + s->rx_fifo_used;
491 if (fifo_pos >= s->rx_fifo_size)
492 fifo_pos -= s->rx_fifo_size;
493 s->rx_fifo[fifo_pos] = val;
494 s->rx_fifo_used++;
495 }
496
497 /* Return nonzero if the packet is accepted by the filter. */
498 static int lan9118_filter(lan9118_state *s, const uint8_t *addr)
499 {
500 int multicast;
501 uint32_t hash;
502
503 if (s->mac_cr & MAC_CR_PRMS) {
504 return 1;
505 }
506 if (addr[0] == 0xff && addr[1] == 0xff && addr[2] == 0xff &&
507 addr[3] == 0xff && addr[4] == 0xff && addr[5] == 0xff) {
508 return (s->mac_cr & MAC_CR_BCAST) == 0;
509 }
510
511 multicast = addr[0] & 1;
512 if (multicast &&s->mac_cr & MAC_CR_MCPAS) {
513 return 1;
514 }
515 if (multicast ? (s->mac_cr & MAC_CR_HPFILT) == 0
516 : (s->mac_cr & MAC_CR_HO) == 0) {
517 /* Exact matching. */
518 hash = memcmp(addr, s->conf.macaddr.a, 6);
519 if (s->mac_cr & MAC_CR_INVFILT) {
520 return hash != 0;
521 } else {
522 return hash == 0;
523 }
524 } else {
525 /* Hash matching */
526 hash = net_crc32(addr, ETH_ALEN) >> 26;
527 if (hash & 0x20) {
528 return (s->mac_hashh >> (hash & 0x1f)) & 1;
529 } else {
530 return (s->mac_hashl >> (hash & 0x1f)) & 1;
531 }
532 }
533 }
534
535 static ssize_t lan9118_receive(NetClientState *nc, const uint8_t *buf,
536 size_t size)
537 {
538 lan9118_state *s = qemu_get_nic_opaque(nc);
539 int fifo_len;
540 int offset;
541 int src_pos;
542 int n;
543 int filter;
544 uint32_t val;
545 uint32_t crc;
546 uint32_t status;
547
548 if ((s->mac_cr & MAC_CR_RXEN) == 0) {
549 return -1;
550 }
551
552 if (size >= 2048 || size < 14) {
553 return -1;
554 }
555
556 /* TODO: Implement FIFO overflow notification. */
557 if (s->rx_status_fifo_used == s->rx_status_fifo_size) {
558 return -1;
559 }
560
561 filter = lan9118_filter(s, buf);
562 if (!filter && (s->mac_cr & MAC_CR_RXALL) == 0) {
563 return size;
564 }
565
566 offset = (s->rx_cfg >> 8) & 0x1f;
567 n = offset & 3;
568 fifo_len = (size + n + 3) >> 2;
569 /* Add a word for the CRC. */
570 fifo_len++;
571 if (s->rx_fifo_size - s->rx_fifo_used < fifo_len) {
572 return -1;
573 }
574
575 DPRINTF("Got packet len:%d fifo:%d filter:%s\n",
576 (int)size, fifo_len, filter ? "pass" : "fail");
577 val = 0;
578 crc = bswap32(crc32(~0, buf, size));
579 for (src_pos = 0; src_pos < size; src_pos++) {
580 val = (val >> 8) | ((uint32_t)buf[src_pos] << 24);
581 n++;
582 if (n == 4) {
583 n = 0;
584 rx_fifo_push(s, val);
585 val = 0;
586 }
587 }
588 if (n) {
589 val >>= ((4 - n) * 8);
590 val |= crc << (n * 8);
591 rx_fifo_push(s, val);
592 val = crc >> ((4 - n) * 8);
593 rx_fifo_push(s, val);
594 } else {
595 rx_fifo_push(s, crc);
596 }
597 n = s->rx_status_fifo_head + s->rx_status_fifo_used;
598 if (n >= s->rx_status_fifo_size) {
599 n -= s->rx_status_fifo_size;
600 }
601 s->rx_packet_size[s->rx_packet_size_tail] = fifo_len;
602 s->rx_packet_size_tail = (s->rx_packet_size_tail + 1023) & 1023;
603 s->rx_status_fifo_used++;
604
605 status = (size + 4) << 16;
606 if (buf[0] == 0xff && buf[1] == 0xff && buf[2] == 0xff &&
607 buf[3] == 0xff && buf[4] == 0xff && buf[5] == 0xff) {
608 status |= 0x00002000;
609 } else if (buf[0] & 1) {
610 status |= 0x00000400;
611 }
612 if (!filter) {
613 status |= 0x40000000;
614 }
615 s->rx_status_fifo[n] = status;
616
617 if (s->rx_status_fifo_used > (s->fifo_int & 0xff)) {
618 s->int_sts |= RSFL_INT;
619 }
620 lan9118_update(s);
621
622 return size;
623 }
624
625 static uint32_t rx_fifo_pop(lan9118_state *s)
626 {
627 int n;
628 uint32_t val;
629
630 if (s->rxp_size == 0 && s->rxp_pad == 0) {
631 s->rxp_size = s->rx_packet_size[s->rx_packet_size_head];
632 s->rx_packet_size[s->rx_packet_size_head] = 0;
633 if (s->rxp_size != 0) {
634 s->rx_packet_size_head = (s->rx_packet_size_head + 1023) & 1023;
635 s->rxp_offset = (s->rx_cfg >> 10) & 7;
636 n = s->rxp_offset + s->rxp_size;
637 switch (s->rx_cfg >> 30) {
638 case 1:
639 n = (-n) & 3;
640 break;
641 case 2:
642 n = (-n) & 7;
643 break;
644 default:
645 n = 0;
646 break;
647 }
648 s->rxp_pad = n;
649 DPRINTF("Pop packet size:%d offset:%d pad: %d\n",
650 s->rxp_size, s->rxp_offset, s->rxp_pad);
651 }
652 }
653 if (s->rxp_offset > 0) {
654 s->rxp_offset--;
655 val = 0;
656 } else if (s->rxp_size > 0) {
657 s->rxp_size--;
658 val = s->rx_fifo[s->rx_fifo_head++];
659 if (s->rx_fifo_head >= s->rx_fifo_size) {
660 s->rx_fifo_head -= s->rx_fifo_size;
661 }
662 s->rx_fifo_used--;
663 } else if (s->rxp_pad > 0) {
664 s->rxp_pad--;
665 val = 0;
666 } else {
667 DPRINTF("RX underflow\n");
668 s->int_sts |= RXE_INT;
669 val = 0;
670 }
671 lan9118_update(s);
672 return val;
673 }
674
675 static void do_tx_packet(lan9118_state *s)
676 {
677 int n;
678 uint32_t status;
679
680 /* FIXME: Honor TX disable, and allow queueing of packets. */
681 if (s->phy_control & 0x4000) {
682 /* This assumes the receive routine doesn't touch the VLANClient. */
683 lan9118_receive(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
684 } else {
685 qemu_send_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
686 }
687 s->txp->fifo_used = 0;
688
689 if (s->tx_status_fifo_used == 512) {
690 /* Status FIFO full */
691 return;
692 }
693 /* Add entry to status FIFO. */
694 status = s->txp->cmd_b & 0xffff0000u;
695 DPRINTF("Sent packet tag:%04x len %d\n", status >> 16, s->txp->len);
696 n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511;
697 s->tx_status_fifo[n] = status;
698 s->tx_status_fifo_used++;
699 if (s->tx_status_fifo_used == 512) {
700 s->int_sts |= TSFF_INT;
701 /* TODO: Stop transmission. */
702 }
703 }
704
705 static uint32_t rx_status_fifo_pop(lan9118_state *s)
706 {
707 uint32_t val;
708
709 val = s->rx_status_fifo[s->rx_status_fifo_head];
710 if (s->rx_status_fifo_used != 0) {
711 s->rx_status_fifo_used--;
712 s->rx_status_fifo_head++;
713 if (s->rx_status_fifo_head >= s->rx_status_fifo_size) {
714 s->rx_status_fifo_head -= s->rx_status_fifo_size;
715 }
716 /* ??? What value should be returned when the FIFO is empty? */
717 DPRINTF("RX status pop 0x%08x\n", val);
718 }
719 return val;
720 }
721
722 static uint32_t tx_status_fifo_pop(lan9118_state *s)
723 {
724 uint32_t val;
725
726 val = s->tx_status_fifo[s->tx_status_fifo_head];
727 if (s->tx_status_fifo_used != 0) {
728 s->tx_status_fifo_used--;
729 s->tx_status_fifo_head = (s->tx_status_fifo_head + 1) & 511;
730 /* ??? What value should be returned when the FIFO is empty? */
731 }
732 return val;
733 }
734
735 static void tx_fifo_push(lan9118_state *s, uint32_t val)
736 {
737 int n;
738
739 if (s->txp->fifo_used == s->tx_fifo_size) {
740 s->int_sts |= TDFO_INT;
741 return;
742 }
743 switch (s->txp->state) {
744 case TX_IDLE:
745 s->txp->cmd_a = val & 0x831f37ff;
746 s->txp->fifo_used++;
747 s->txp->state = TX_B;
748 s->txp->buffer_size = extract32(s->txp->cmd_a, 0, 11);
749 s->txp->offset = extract32(s->txp->cmd_a, 16, 5);
750 break;
751 case TX_B:
752 if (s->txp->cmd_a & 0x2000) {
753 /* First segment */
754 s->txp->cmd_b = val;
755 s->txp->fifo_used++;
756 /* End alignment does not include command words. */
757 n = (s->txp->buffer_size + s->txp->offset + 3) >> 2;
758 switch ((n >> 24) & 3) {
759 case 1:
760 n = (-n) & 3;
761 break;
762 case 2:
763 n = (-n) & 7;
764 break;
765 default:
766 n = 0;
767 }
768 s->txp->pad = n;
769 s->txp->len = 0;
770 }
771 DPRINTF("Block len:%d offset:%d pad:%d cmd %08x\n",
772 s->txp->buffer_size, s->txp->offset, s->txp->pad,
773 s->txp->cmd_a);
774 s->txp->state = TX_DATA;
775 break;
776 case TX_DATA:
777 if (s->txp->offset >= 4) {
778 s->txp->offset -= 4;
779 break;
780 }
781 if (s->txp->buffer_size <= 0 && s->txp->pad != 0) {
782 s->txp->pad--;
783 } else {
784 n = MIN(4, s->txp->buffer_size + s->txp->offset);
785 while (s->txp->offset) {
786 val >>= 8;
787 n--;
788 s->txp->offset--;
789 }
790 /* Documentation is somewhat unclear on the ordering of bytes
791 in FIFO words. Empirical results show it to be little-endian.
792 */
793 /* TODO: FIFO overflow checking. */
794 while (n--) {
795 s->txp->data[s->txp->len] = val & 0xff;
796 s->txp->len++;
797 val >>= 8;
798 s->txp->buffer_size--;
799 }
800 s->txp->fifo_used++;
801 }
802 if (s->txp->buffer_size <= 0 && s->txp->pad == 0) {
803 if (s->txp->cmd_a & 0x1000) {
804 do_tx_packet(s);
805 }
806 if (s->txp->cmd_a & 0x80000000) {
807 s->int_sts |= TX_IOC_INT;
808 }
809 s->txp->state = TX_IDLE;
810 }
811 break;
812 }
813 }
814
815 static uint32_t do_phy_read(lan9118_state *s, int reg)
816 {
817 uint32_t val;
818
819 switch (reg) {
820 case 0: /* Basic Control */
821 return s->phy_control;
822 case 1: /* Basic Status */
823 return s->phy_status;
824 case 2: /* ID1 */
825 return 0x0007;
826 case 3: /* ID2 */
827 return 0xc0d1;
828 case 4: /* Auto-neg advertisement */
829 return s->phy_advertise;
830 case 5: /* Auto-neg Link Partner Ability */
831 return 0x0f71;
832 case 6: /* Auto-neg Expansion */
833 return 1;
834 /* TODO 17, 18, 27, 29, 30, 31 */
835 case 29: /* Interrupt source. */
836 val = s->phy_int;
837 s->phy_int = 0;
838 phy_update_irq(s);
839 return val;
840 case 30: /* Interrupt mask */
841 return s->phy_int_mask;
842 default:
843 BADF("PHY read reg %d\n", reg);
844 return 0;
845 }
846 }
847
848 static void do_phy_write(lan9118_state *s, int reg, uint32_t val)
849 {
850 switch (reg) {
851 case 0: /* Basic Control */
852 if (val & 0x8000) {
853 phy_reset(s);
854 break;
855 }
856 s->phy_control = val & 0x7980;
857 /* Complete autonegotiation immediately. */
858 if (val & 0x1000) {
859 s->phy_status |= 0x0020;
860 }
861 break;
862 case 4: /* Auto-neg advertisement */
863 s->phy_advertise = (val & 0x2d7f) | 0x80;
864 break;
865 /* TODO 17, 18, 27, 31 */
866 case 30: /* Interrupt mask */
867 s->phy_int_mask = val & 0xff;
868 phy_update_irq(s);
869 break;
870 default:
871 BADF("PHY write reg %d = 0x%04x\n", reg, val);
872 }
873 }
874
875 static void do_mac_write(lan9118_state *s, int reg, uint32_t val)
876 {
877 switch (reg) {
878 case MAC_CR:
879 if ((s->mac_cr & MAC_CR_RXEN) != 0 && (val & MAC_CR_RXEN) == 0) {
880 s->int_sts |= RXSTOP_INT;
881 }
882 s->mac_cr = val & ~MAC_CR_RESERVED;
883 DPRINTF("MAC_CR: %08x\n", val);
884 break;
885 case MAC_ADDRH:
886 s->conf.macaddr.a[4] = val & 0xff;
887 s->conf.macaddr.a[5] = (val >> 8) & 0xff;
888 lan9118_mac_changed(s);
889 break;
890 case MAC_ADDRL:
891 s->conf.macaddr.a[0] = val & 0xff;
892 s->conf.macaddr.a[1] = (val >> 8) & 0xff;
893 s->conf.macaddr.a[2] = (val >> 16) & 0xff;
894 s->conf.macaddr.a[3] = (val >> 24) & 0xff;
895 lan9118_mac_changed(s);
896 break;
897 case MAC_HASHH:
898 s->mac_hashh = val;
899 break;
900 case MAC_HASHL:
901 s->mac_hashl = val;
902 break;
903 case MAC_MII_ACC:
904 s->mac_mii_acc = val & 0xffc2;
905 if (val & 2) {
906 DPRINTF("PHY write %d = 0x%04x\n",
907 (val >> 6) & 0x1f, s->mac_mii_data);
908 do_phy_write(s, (val >> 6) & 0x1f, s->mac_mii_data);
909 } else {
910 s->mac_mii_data = do_phy_read(s, (val >> 6) & 0x1f);
911 DPRINTF("PHY read %d = 0x%04x\n",
912 (val >> 6) & 0x1f, s->mac_mii_data);
913 }
914 break;
915 case MAC_MII_DATA:
916 s->mac_mii_data = val & 0xffff;
917 break;
918 case MAC_FLOW:
919 s->mac_flow = val & 0xffff0000;
920 break;
921 case MAC_VLAN1:
922 /* Writing to this register changes a condition for
923 * FrameTooLong bit in rx_status. Since we do not set
924 * FrameTooLong anyway, just ignore write to this.
925 */
926 break;
927 default:
928 qemu_log_mask(LOG_GUEST_ERROR,
929 "lan9118: Unimplemented MAC register write: %d = 0x%x\n",
930 s->mac_cmd & 0xf, val);
931 }
932 }
933
934 static uint32_t do_mac_read(lan9118_state *s, int reg)
935 {
936 switch (reg) {
937 case MAC_CR:
938 return s->mac_cr;
939 case MAC_ADDRH:
940 return s->conf.macaddr.a[4] | (s->conf.macaddr.a[5] << 8);
941 case MAC_ADDRL:
942 return s->conf.macaddr.a[0] | (s->conf.macaddr.a[1] << 8)
943 | (s->conf.macaddr.a[2] << 16) | (s->conf.macaddr.a[3] << 24);
944 case MAC_HASHH:
945 return s->mac_hashh;
946 case MAC_HASHL:
947 return s->mac_hashl;
948 case MAC_MII_ACC:
949 return s->mac_mii_acc;
950 case MAC_MII_DATA:
951 return s->mac_mii_data;
952 case MAC_FLOW:
953 return s->mac_flow;
954 default:
955 qemu_log_mask(LOG_GUEST_ERROR,
956 "lan9118: Unimplemented MAC register read: %d\n",
957 s->mac_cmd & 0xf);
958 return 0;
959 }
960 }
961
962 static void lan9118_eeprom_cmd(lan9118_state *s, int cmd, int addr)
963 {
964 s->e2p_cmd = (s->e2p_cmd & E2P_CMD_MAC_ADDR_LOADED) | (cmd << 28) | addr;
965 switch (cmd) {
966 case 0:
967 s->e2p_data = s->eeprom[addr];
968 DPRINTF("EEPROM Read %d = 0x%02x\n", addr, s->e2p_data);
969 break;
970 case 1:
971 s->eeprom_writable = 0;
972 DPRINTF("EEPROM Write Disable\n");
973 break;
974 case 2: /* EWEN */
975 s->eeprom_writable = 1;
976 DPRINTF("EEPROM Write Enable\n");
977 break;
978 case 3: /* WRITE */
979 if (s->eeprom_writable) {
980 s->eeprom[addr] &= s->e2p_data;
981 DPRINTF("EEPROM Write %d = 0x%02x\n", addr, s->e2p_data);
982 } else {
983 DPRINTF("EEPROM Write %d (ignored)\n", addr);
984 }
985 break;
986 case 4: /* WRAL */
987 if (s->eeprom_writable) {
988 for (addr = 0; addr < 128; addr++) {
989 s->eeprom[addr] &= s->e2p_data;
990 }
991 DPRINTF("EEPROM Write All 0x%02x\n", s->e2p_data);
992 } else {
993 DPRINTF("EEPROM Write All (ignored)\n");
994 }
995 break;
996 case 5: /* ERASE */
997 if (s->eeprom_writable) {
998 s->eeprom[addr] = 0xff;
999 DPRINTF("EEPROM Erase %d\n", addr);
1000 } else {
1001 DPRINTF("EEPROM Erase %d (ignored)\n", addr);
1002 }
1003 break;
1004 case 6: /* ERAL */
1005 if (s->eeprom_writable) {
1006 memset(s->eeprom, 0xff, 128);
1007 DPRINTF("EEPROM Erase All\n");
1008 } else {
1009 DPRINTF("EEPROM Erase All (ignored)\n");
1010 }
1011 break;
1012 case 7: /* RELOAD */
1013 lan9118_reload_eeprom(s);
1014 break;
1015 }
1016 }
1017
1018 static void lan9118_tick(void *opaque)
1019 {
1020 lan9118_state *s = (lan9118_state *)opaque;
1021 if (s->int_en & GPT_INT) {
1022 s->int_sts |= GPT_INT;
1023 }
1024 lan9118_update(s);
1025 }
1026
1027 static void lan9118_writel(void *opaque, hwaddr offset,
1028 uint64_t val, unsigned size)
1029 {
1030 lan9118_state *s = (lan9118_state *)opaque;
1031 offset &= 0xff;
1032
1033 //DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val);
1034 if (offset >= TX_DATA_FIFO_PORT_FIRST &&
1035 offset <= TX_DATA_FIFO_PORT_LAST) {
1036 /* TX FIFO */
1037 tx_fifo_push(s, val);
1038 return;
1039 }
1040 switch (offset) {
1041 case CSR_IRQ_CFG:
1042 /* TODO: Implement interrupt deassertion intervals. */
1043 val &= (IRQ_EN | IRQ_POL | IRQ_TYPE);
1044 s->irq_cfg = (s->irq_cfg & IRQ_INT) | val;
1045 break;
1046 case CSR_INT_STS:
1047 s->int_sts &= ~val;
1048 break;
1049 case CSR_INT_EN:
1050 s->int_en = val & ~RESERVED_INT;
1051 s->int_sts |= val & SW_INT;
1052 break;
1053 case CSR_FIFO_INT:
1054 DPRINTF("FIFO INT levels %08x\n", val);
1055 s->fifo_int = val;
1056 break;
1057 case CSR_RX_CFG:
1058 if (val & 0x8000) {
1059 /* RX_DUMP */
1060 s->rx_fifo_used = 0;
1061 s->rx_status_fifo_used = 0;
1062 s->rx_packet_size_tail = s->rx_packet_size_head;
1063 s->rx_packet_size[s->rx_packet_size_head] = 0;
1064 }
1065 s->rx_cfg = val & 0xcfff1ff0;
1066 break;
1067 case CSR_TX_CFG:
1068 if (val & 0x8000) {
1069 s->tx_status_fifo_used = 0;
1070 }
1071 if (val & 0x4000) {
1072 s->txp->state = TX_IDLE;
1073 s->txp->fifo_used = 0;
1074 s->txp->cmd_a = 0xffffffff;
1075 }
1076 s->tx_cfg = val & 6;
1077 break;
1078 case CSR_HW_CFG:
1079 if (val & 1) {
1080 /* SRST */
1081 lan9118_reset(DEVICE(s));
1082 } else {
1083 s->hw_cfg = (val & 0x003f300) | (s->hw_cfg & 0x4);
1084 }
1085 break;
1086 case CSR_RX_DP_CTRL:
1087 if (val & 0x80000000) {
1088 /* Skip forward to next packet. */
1089 s->rxp_pad = 0;
1090 s->rxp_offset = 0;
1091 if (s->rxp_size == 0) {
1092 /* Pop a word to start the next packet. */
1093 rx_fifo_pop(s);
1094 s->rxp_pad = 0;
1095 s->rxp_offset = 0;
1096 }
1097 s->rx_fifo_head += s->rxp_size;
1098 if (s->rx_fifo_head >= s->rx_fifo_size) {
1099 s->rx_fifo_head -= s->rx_fifo_size;
1100 }
1101 }
1102 break;
1103 case CSR_PMT_CTRL:
1104 if (val & 0x400) {
1105 phy_reset(s);
1106 }
1107 s->pmt_ctrl &= ~0x34e;
1108 s->pmt_ctrl |= (val & 0x34e);
1109 break;
1110 case CSR_GPIO_CFG:
1111 /* Probably just enabling LEDs. */
1112 s->gpio_cfg = val & 0x7777071f;
1113 break;
1114 case CSR_GPT_CFG:
1115 if ((s->gpt_cfg ^ val) & GPT_TIMER_EN) {
1116 ptimer_transaction_begin(s->timer);
1117 if (val & GPT_TIMER_EN) {
1118 ptimer_set_count(s->timer, val & 0xffff);
1119 ptimer_run(s->timer, 0);
1120 } else {
1121 ptimer_stop(s->timer);
1122 ptimer_set_count(s->timer, 0xffff);
1123 }
1124 ptimer_transaction_commit(s->timer);
1125 }
1126 s->gpt_cfg = val & (GPT_TIMER_EN | 0xffff);
1127 break;
1128 case CSR_WORD_SWAP:
1129 /* Ignored because we're in 32-bit mode. */
1130 s->word_swap = val;
1131 break;
1132 case CSR_MAC_CSR_CMD:
1133 s->mac_cmd = val & 0x4000000f;
1134 if (val & 0x80000000) {
1135 if (val & 0x40000000) {
1136 s->mac_data = do_mac_read(s, val & 0xf);
1137 DPRINTF("MAC read %d = 0x%08x\n", val & 0xf, s->mac_data);
1138 } else {
1139 DPRINTF("MAC write %d = 0x%08x\n", val & 0xf, s->mac_data);
1140 do_mac_write(s, val & 0xf, s->mac_data);
1141 }
1142 }
1143 break;
1144 case CSR_MAC_CSR_DATA:
1145 s->mac_data = val;
1146 break;
1147 case CSR_AFC_CFG:
1148 s->afc_cfg = val & 0x00ffffff;
1149 break;
1150 case CSR_E2P_CMD:
1151 lan9118_eeprom_cmd(s, (val >> 28) & 7, val & 0x7f);
1152 break;
1153 case CSR_E2P_DATA:
1154 s->e2p_data = val & 0xff;
1155 break;
1156
1157 default:
1158 qemu_log_mask(LOG_GUEST_ERROR, "lan9118_write: Bad reg 0x%x = %x\n",
1159 (int)offset, (int)val);
1160 break;
1161 }
1162 lan9118_update(s);
1163 }
1164
1165 static void lan9118_writew(void *opaque, hwaddr offset,
1166 uint32_t val)
1167 {
1168 lan9118_state *s = (lan9118_state *)opaque;
1169 offset &= 0xff;
1170
1171 if (s->write_word_prev_offset != (offset & ~0x3)) {
1172 /* New offset, reset word counter */
1173 s->write_word_n = 0;
1174 s->write_word_prev_offset = offset & ~0x3;
1175 }
1176
1177 if (offset & 0x2) {
1178 s->write_word_h = val;
1179 } else {
1180 s->write_word_l = val;
1181 }
1182
1183 //DPRINTF("Writew reg 0x%02x = 0x%08x\n", (int)offset, val);
1184 s->write_word_n++;
1185 if (s->write_word_n == 2) {
1186 s->write_word_n = 0;
1187 lan9118_writel(s, offset & ~3, s->write_word_l +
1188 (s->write_word_h << 16), 4);
1189 }
1190 }
1191
1192 static void lan9118_16bit_mode_write(void *opaque, hwaddr offset,
1193 uint64_t val, unsigned size)
1194 {
1195 switch (size) {
1196 case 2:
1197 lan9118_writew(opaque, offset, (uint32_t)val);
1198 return;
1199 case 4:
1200 lan9118_writel(opaque, offset, val, size);
1201 return;
1202 }
1203
1204 hw_error("lan9118_write: Bad size 0x%x\n", size);
1205 }
1206
1207 static uint64_t lan9118_readl(void *opaque, hwaddr offset,
1208 unsigned size)
1209 {
1210 lan9118_state *s = (lan9118_state *)opaque;
1211
1212 //DPRINTF("Read reg 0x%02x\n", (int)offset);
1213 if (offset <= RX_DATA_FIFO_PORT_LAST) {
1214 /* RX FIFO */
1215 return rx_fifo_pop(s);
1216 }
1217 switch (offset) {
1218 case RX_STATUS_FIFO_PORT:
1219 return rx_status_fifo_pop(s);
1220 case RX_STATUS_FIFO_PEEK:
1221 return s->rx_status_fifo[s->rx_status_fifo_head];
1222 case TX_STATUS_FIFO_PORT:
1223 return tx_status_fifo_pop(s);
1224 case TX_STATUS_FIFO_PEEK:
1225 return s->tx_status_fifo[s->tx_status_fifo_head];
1226 case CSR_ID_REV:
1227 return 0x01180001;
1228 case CSR_IRQ_CFG:
1229 return s->irq_cfg;
1230 case CSR_INT_STS:
1231 return s->int_sts;
1232 case CSR_INT_EN:
1233 return s->int_en;
1234 case CSR_BYTE_TEST:
1235 return 0x87654321;
1236 case CSR_FIFO_INT:
1237 return s->fifo_int;
1238 case CSR_RX_CFG:
1239 return s->rx_cfg;
1240 case CSR_TX_CFG:
1241 return s->tx_cfg;
1242 case CSR_HW_CFG:
1243 return s->hw_cfg;
1244 case CSR_RX_DP_CTRL:
1245 return 0;
1246 case CSR_RX_FIFO_INF:
1247 return (s->rx_status_fifo_used << 16) | (s->rx_fifo_used << 2);
1248 case CSR_TX_FIFO_INF:
1249 return (s->tx_status_fifo_used << 16)
1250 | (s->tx_fifo_size - s->txp->fifo_used);
1251 case CSR_PMT_CTRL:
1252 return s->pmt_ctrl;
1253 case CSR_GPIO_CFG:
1254 return s->gpio_cfg;
1255 case CSR_GPT_CFG:
1256 return s->gpt_cfg;
1257 case CSR_GPT_CNT:
1258 return ptimer_get_count(s->timer);
1259 case CSR_WORD_SWAP:
1260 return s->word_swap;
1261 case CSR_FREE_RUN:
1262 return (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 40) - s->free_timer_start;
1263 case CSR_RX_DROP:
1264 /* TODO: Implement dropped frames counter. */
1265 return 0;
1266 case CSR_MAC_CSR_CMD:
1267 return s->mac_cmd;
1268 case CSR_MAC_CSR_DATA:
1269 return s->mac_data;
1270 case CSR_AFC_CFG:
1271 return s->afc_cfg;
1272 case CSR_E2P_CMD:
1273 return s->e2p_cmd;
1274 case CSR_E2P_DATA:
1275 return s->e2p_data;
1276 }
1277 qemu_log_mask(LOG_GUEST_ERROR, "lan9118_read: Bad reg 0x%x\n", (int)offset);
1278 return 0;
1279 }
1280
1281 static uint32_t lan9118_readw(void *opaque, hwaddr offset)
1282 {
1283 lan9118_state *s = (lan9118_state *)opaque;
1284 uint32_t val;
1285
1286 if (s->read_word_prev_offset != (offset & ~0x3)) {
1287 /* New offset, reset word counter */
1288 s->read_word_n = 0;
1289 s->read_word_prev_offset = offset & ~0x3;
1290 }
1291
1292 s->read_word_n++;
1293 if (s->read_word_n == 1) {
1294 s->read_long = lan9118_readl(s, offset & ~3, 4);
1295 } else {
1296 s->read_word_n = 0;
1297 }
1298
1299 if (offset & 2) {
1300 val = s->read_long >> 16;
1301 } else {
1302 val = s->read_long & 0xFFFF;
1303 }
1304
1305 //DPRINTF("Readw reg 0x%02x, val 0x%x\n", (int)offset, val);
1306 return val;
1307 }
1308
1309 static uint64_t lan9118_16bit_mode_read(void *opaque, hwaddr offset,
1310 unsigned size)
1311 {
1312 switch (size) {
1313 case 2:
1314 return lan9118_readw(opaque, offset);
1315 case 4:
1316 return lan9118_readl(opaque, offset, size);
1317 }
1318
1319 hw_error("lan9118_read: Bad size 0x%x\n", size);
1320 return 0;
1321 }
1322
1323 static const MemoryRegionOps lan9118_mem_ops = {
1324 .read = lan9118_readl,
1325 .write = lan9118_writel,
1326 .endianness = DEVICE_NATIVE_ENDIAN,
1327 };
1328
1329 static const MemoryRegionOps lan9118_16bit_mem_ops = {
1330 .read = lan9118_16bit_mode_read,
1331 .write = lan9118_16bit_mode_write,
1332 .endianness = DEVICE_NATIVE_ENDIAN,
1333 };
1334
1335 static NetClientInfo net_lan9118_info = {
1336 .type = NET_CLIENT_DRIVER_NIC,
1337 .size = sizeof(NICState),
1338 .receive = lan9118_receive,
1339 .link_status_changed = lan9118_set_link,
1340 };
1341
1342 static void lan9118_realize(DeviceState *dev, Error **errp)
1343 {
1344 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1345 lan9118_state *s = LAN9118(dev);
1346 int i;
1347 const MemoryRegionOps *mem_ops =
1348 s->mode_16bit ? &lan9118_16bit_mem_ops : &lan9118_mem_ops;
1349
1350 memory_region_init_io(&s->mmio, OBJECT(dev), mem_ops, s,
1351 "lan9118-mmio", 0x100);
1352 sysbus_init_mmio(sbd, &s->mmio);
1353 sysbus_init_irq(sbd, &s->irq);
1354 qemu_macaddr_default_if_unset(&s->conf.macaddr);
1355
1356 s->nic = qemu_new_nic(&net_lan9118_info, &s->conf,
1357 object_get_typename(OBJECT(dev)), dev->id, s);
1358 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
1359 s->eeprom[0] = 0xa5;
1360 for (i = 0; i < 6; i++) {
1361 s->eeprom[i + 1] = s->conf.macaddr.a[i];
1362 }
1363 s->pmt_ctrl = 1;
1364 s->txp = &s->tx_packet;
1365
1366 s->timer = ptimer_init(lan9118_tick, s, PTIMER_POLICY_DEFAULT);
1367 ptimer_transaction_begin(s->timer);
1368 ptimer_set_freq(s->timer, 10000);
1369 ptimer_set_limit(s->timer, 0xffff, 1);
1370 ptimer_transaction_commit(s->timer);
1371 }
1372
1373 static Property lan9118_properties[] = {
1374 DEFINE_NIC_PROPERTIES(lan9118_state, conf),
1375 DEFINE_PROP_UINT32("mode_16bit", lan9118_state, mode_16bit, 0),
1376 DEFINE_PROP_END_OF_LIST(),
1377 };
1378
1379 static void lan9118_class_init(ObjectClass *klass, void *data)
1380 {
1381 DeviceClass *dc = DEVICE_CLASS(klass);
1382
1383 dc->reset = lan9118_reset;
1384 device_class_set_props(dc, lan9118_properties);
1385 dc->vmsd = &vmstate_lan9118;
1386 dc->realize = lan9118_realize;
1387 }
1388
1389 static const TypeInfo lan9118_info = {
1390 .name = TYPE_LAN9118,
1391 .parent = TYPE_SYS_BUS_DEVICE,
1392 .instance_size = sizeof(lan9118_state),
1393 .class_init = lan9118_class_init,
1394 };
1395
1396 static void lan9118_register_types(void)
1397 {
1398 type_register_static(&lan9118_info);
1399 }
1400
1401 /* Legacy helper function. Should go away when machine config files are
1402 implemented. */
1403 void lan9118_init(NICInfo *nd, uint32_t base, qemu_irq irq)
1404 {
1405 DeviceState *dev;
1406 SysBusDevice *s;
1407
1408 qemu_check_nic_model(nd, "lan9118");
1409 dev = qdev_new(TYPE_LAN9118);
1410 qdev_set_nic_properties(dev, nd);
1411 s = SYS_BUS_DEVICE(dev);
1412 sysbus_realize_and_unref(s, &error_fatal);
1413 sysbus_mmio_map(s, 0, base);
1414 sysbus_connect_irq(s, 0, irq);
1415 }
1416
1417 type_init(lan9118_register_types)
AR7 emulation for QEMU