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