1 /* drivers/net/ethernet/8390/ax88796.c 2 * 3 * Copyright 2005,2007 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * Asix AX88796 10/100 Ethernet controller support 7 * Based on ne.c, by Donald Becker, et-al. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/errno.h> 17 #include <linux/isapnp.h> 18 #include <linux/interrupt.h> 19 #include <linux/io.h> 20 #include <linux/platform_device.h> 21 #include <linux/delay.h> 22 #include <linux/timer.h> 23 #include <linux/netdevice.h> 24 #include <linux/etherdevice.h> 25 #include <linux/ethtool.h> 26 #include <linux/mdio-bitbang.h> 27 #include <linux/phy.h> 28 #include <linux/eeprom_93cx6.h> 29 #include <linux/slab.h> 30 31 #include <net/ax88796.h> 32 33 34 /* Rename the lib8390.c functions to show that they are in this driver */ 35 #define __ei_open ax_ei_open 36 #define __ei_close ax_ei_close 37 #define __ei_poll ax_ei_poll 38 #define __ei_start_xmit ax_ei_start_xmit 39 #define __ei_tx_timeout ax_ei_tx_timeout 40 #define __ei_get_stats ax_ei_get_stats 41 #define __ei_set_multicast_list ax_ei_set_multicast_list 42 #define __ei_interrupt ax_ei_interrupt 43 #define ____alloc_ei_netdev ax__alloc_ei_netdev 44 #define __NS8390_init ax_NS8390_init 45 46 /* force unsigned long back to 'void __iomem *' */ 47 #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 48 49 #define ei_inb(_a) readb(ax_convert_addr(_a)) 50 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 51 52 #define ei_inb_p(_a) ei_inb(_a) 53 #define ei_outb_p(_v, _a) ei_outb(_v, _a) 54 55 /* define EI_SHIFT() to take into account our register offsets */ 56 #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 57 58 /* Ensure we have our RCR base value */ 59 #define AX88796_PLATFORM 60 61 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 62 63 #include "lib8390.c" 64 65 #define DRV_NAME "ax88796" 66 #define DRV_VERSION "1.00" 67 68 /* from ne.c */ 69 #define NE_CMD EI_SHIFT(0x00) 70 #define NE_RESET EI_SHIFT(0x1f) 71 #define NE_DATAPORT EI_SHIFT(0x10) 72 73 #define NE1SM_START_PG 0x20 /* First page of TX buffer */ 74 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 75 #define NESM_START_PG 0x40 /* First page of TX buffer */ 76 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 77 78 #define AX_GPOC_PPDSET BIT(6) 79 80 static u32 ax_msg_enable; 81 82 /* device private data */ 83 84 struct ax_device { 85 struct mii_bus *mii_bus; 86 struct mdiobb_ctrl bb_ctrl; 87 void __iomem *addr_memr; 88 u8 reg_memr; 89 int link; 90 int speed; 91 int duplex; 92 93 void __iomem *map2; 94 const struct ax_plat_data *plat; 95 96 unsigned char running; 97 unsigned char resume_open; 98 unsigned int irqflags; 99 100 u32 reg_offsets[0x20]; 101 }; 102 103 static inline struct ax_device *to_ax_dev(struct net_device *dev) 104 { 105 struct ei_device *ei_local = netdev_priv(dev); 106 return (struct ax_device *)(ei_local + 1); 107 } 108 109 /* 110 * ax_initial_check 111 * 112 * do an initial probe for the card to check whether it exists 113 * and is functional 114 */ 115 static int ax_initial_check(struct net_device *dev) 116 { 117 struct ei_device *ei_local = netdev_priv(dev); 118 void __iomem *ioaddr = ei_local->mem; 119 int reg0; 120 int regd; 121 122 reg0 = ei_inb(ioaddr); 123 if (reg0 == 0xFF) 124 return -ENODEV; 125 126 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 127 regd = ei_inb(ioaddr + 0x0d); 128 ei_outb(0xff, ioaddr + 0x0d); 129 ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 130 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 131 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { 132 ei_outb(reg0, ioaddr); 133 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ 134 return -ENODEV; 135 } 136 137 return 0; 138 } 139 140 /* 141 * Hard reset the card. This used to pause for the same period that a 142 * 8390 reset command required, but that shouldn't be necessary. 143 */ 144 static void ax_reset_8390(struct net_device *dev) 145 { 146 struct ei_device *ei_local = netdev_priv(dev); 147 unsigned long reset_start_time = jiffies; 148 void __iomem *addr = (void __iomem *)dev->base_addr; 149 150 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); 151 152 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); 153 154 ei_local->txing = 0; 155 ei_local->dmaing = 0; 156 157 /* This check _should_not_ be necessary, omit eventually. */ 158 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { 159 if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) { 160 netdev_warn(dev, "%s: did not complete.\n", __func__); 161 break; 162 } 163 } 164 165 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ 166 } 167 168 169 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 170 int ring_page) 171 { 172 struct ei_device *ei_local = netdev_priv(dev); 173 void __iomem *nic_base = ei_local->mem; 174 175 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 176 if (ei_local->dmaing) { 177 netdev_err(dev, "DMAing conflict in %s " 178 "[DMAstat:%d][irqlock:%d].\n", 179 __func__, 180 ei_local->dmaing, ei_local->irqlock); 181 return; 182 } 183 184 ei_local->dmaing |= 0x01; 185 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 186 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 187 ei_outb(0, nic_base + EN0_RCNTHI); 188 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 189 ei_outb(ring_page, nic_base + EN0_RSARHI); 190 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 191 192 if (ei_local->word16) 193 ioread16_rep(nic_base + NE_DATAPORT, hdr, 194 sizeof(struct e8390_pkt_hdr) >> 1); 195 else 196 ioread8_rep(nic_base + NE_DATAPORT, hdr, 197 sizeof(struct e8390_pkt_hdr)); 198 199 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 200 ei_local->dmaing &= ~0x01; 201 202 le16_to_cpus(&hdr->count); 203 } 204 205 206 /* 207 * Block input and output, similar to the Crynwr packet driver. If 208 * you are porting to a new ethercard, look at the packet driver 209 * source for hints. The NEx000 doesn't share the on-board packet 210 * memory -- you have to put the packet out through the "remote DMA" 211 * dataport using ei_outb. 212 */ 213 static void ax_block_input(struct net_device *dev, int count, 214 struct sk_buff *skb, int ring_offset) 215 { 216 struct ei_device *ei_local = netdev_priv(dev); 217 void __iomem *nic_base = ei_local->mem; 218 char *buf = skb->data; 219 220 if (ei_local->dmaing) { 221 netdev_err(dev, 222 "DMAing conflict in %s " 223 "[DMAstat:%d][irqlock:%d].\n", 224 __func__, 225 ei_local->dmaing, ei_local->irqlock); 226 return; 227 } 228 229 ei_local->dmaing |= 0x01; 230 231 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 232 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 233 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 234 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 235 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 236 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 237 238 if (ei_local->word16) { 239 ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 240 if (count & 0x01) 241 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 242 243 } else { 244 ioread8_rep(nic_base + NE_DATAPORT, buf, count); 245 } 246 247 ei_local->dmaing &= ~1; 248 } 249 250 static void ax_block_output(struct net_device *dev, int count, 251 const unsigned char *buf, const int start_page) 252 { 253 struct ei_device *ei_local = netdev_priv(dev); 254 void __iomem *nic_base = ei_local->mem; 255 unsigned long dma_start; 256 257 /* 258 * Round the count up for word writes. Do we need to do this? 259 * What effect will an odd byte count have on the 8390? I 260 * should check someday. 261 */ 262 if (ei_local->word16 && (count & 0x01)) 263 count++; 264 265 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 266 if (ei_local->dmaing) { 267 netdev_err(dev, "DMAing conflict in %s." 268 "[DMAstat:%d][irqlock:%d]\n", 269 __func__, 270 ei_local->dmaing, ei_local->irqlock); 271 return; 272 } 273 274 ei_local->dmaing |= 0x01; 275 /* We should already be in page 0, but to be safe... */ 276 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 277 278 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 279 280 /* Now the normal output. */ 281 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 282 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 283 ei_outb(0x00, nic_base + EN0_RSARLO); 284 ei_outb(start_page, nic_base + EN0_RSARHI); 285 286 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 287 if (ei_local->word16) 288 iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 289 else 290 iowrite8_rep(nic_base + NE_DATAPORT, buf, count); 291 292 dma_start = jiffies; 293 294 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 295 if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ 296 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 297 ax_reset_8390(dev); 298 ax_NS8390_init(dev, 1); 299 break; 300 } 301 } 302 303 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 304 ei_local->dmaing &= ~0x01; 305 } 306 307 /* definitions for accessing MII/EEPROM interface */ 308 309 #define AX_MEMR EI_SHIFT(0x14) 310 #define AX_MEMR_MDC BIT(0) 311 #define AX_MEMR_MDIR BIT(1) 312 #define AX_MEMR_MDI BIT(2) 313 #define AX_MEMR_MDO BIT(3) 314 #define AX_MEMR_EECS BIT(4) 315 #define AX_MEMR_EEI BIT(5) 316 #define AX_MEMR_EEO BIT(6) 317 #define AX_MEMR_EECLK BIT(7) 318 319 static void ax_handle_link_change(struct net_device *dev) 320 { 321 struct ax_device *ax = to_ax_dev(dev); 322 struct phy_device *phy_dev = dev->phydev; 323 int status_change = 0; 324 325 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 326 (ax->duplex != phy_dev->duplex))) { 327 328 ax->speed = phy_dev->speed; 329 ax->duplex = phy_dev->duplex; 330 status_change = 1; 331 } 332 333 if (phy_dev->link != ax->link) { 334 if (!phy_dev->link) { 335 ax->speed = 0; 336 ax->duplex = -1; 337 } 338 ax->link = phy_dev->link; 339 340 status_change = 1; 341 } 342 343 if (status_change) 344 phy_print_status(phy_dev); 345 } 346 347 static int ax_mii_probe(struct net_device *dev) 348 { 349 struct ax_device *ax = to_ax_dev(dev); 350 struct phy_device *phy_dev = NULL; 351 int ret; 352 353 /* find the first phy */ 354 phy_dev = phy_find_first(ax->mii_bus); 355 if (!phy_dev) { 356 netdev_err(dev, "no PHY found\n"); 357 return -ENODEV; 358 } 359 360 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 361 PHY_INTERFACE_MODE_MII); 362 if (ret) { 363 netdev_err(dev, "Could not attach to PHY\n"); 364 return ret; 365 } 366 367 /* mask with MAC supported features */ 368 phy_dev->supported &= PHY_BASIC_FEATURES; 369 phy_dev->advertising = phy_dev->supported; 370 371 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 372 phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq); 373 374 return 0; 375 } 376 377 static void ax_phy_switch(struct net_device *dev, int on) 378 { 379 struct ei_device *ei_local = netdev_priv(dev); 380 struct ax_device *ax = to_ax_dev(dev); 381 382 u8 reg_gpoc = ax->plat->gpoc_val; 383 384 if (!!on) 385 reg_gpoc &= ~AX_GPOC_PPDSET; 386 else 387 reg_gpoc |= AX_GPOC_PPDSET; 388 389 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 390 } 391 392 static int ax_open(struct net_device *dev) 393 { 394 struct ax_device *ax = to_ax_dev(dev); 395 int ret; 396 397 netdev_dbg(dev, "open\n"); 398 399 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 400 dev->name, dev); 401 if (ret) 402 goto failed_request_irq; 403 404 /* turn the phy on (if turned off) */ 405 ax_phy_switch(dev, 1); 406 407 ret = ax_mii_probe(dev); 408 if (ret) 409 goto failed_mii_probe; 410 phy_start(dev->phydev); 411 412 ret = ax_ei_open(dev); 413 if (ret) 414 goto failed_ax_ei_open; 415 416 ax->running = 1; 417 418 return 0; 419 420 failed_ax_ei_open: 421 phy_disconnect(dev->phydev); 422 failed_mii_probe: 423 ax_phy_switch(dev, 0); 424 free_irq(dev->irq, dev); 425 failed_request_irq: 426 return ret; 427 } 428 429 static int ax_close(struct net_device *dev) 430 { 431 struct ax_device *ax = to_ax_dev(dev); 432 433 netdev_dbg(dev, "close\n"); 434 435 ax->running = 0; 436 wmb(); 437 438 ax_ei_close(dev); 439 440 /* turn the phy off */ 441 ax_phy_switch(dev, 0); 442 phy_disconnect(dev->phydev); 443 444 free_irq(dev->irq, dev); 445 return 0; 446 } 447 448 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 449 { 450 struct phy_device *phy_dev = dev->phydev; 451 452 if (!netif_running(dev)) 453 return -EINVAL; 454 455 if (!phy_dev) 456 return -ENODEV; 457 458 return phy_mii_ioctl(phy_dev, req, cmd); 459 } 460 461 /* ethtool ops */ 462 463 static void ax_get_drvinfo(struct net_device *dev, 464 struct ethtool_drvinfo *info) 465 { 466 struct platform_device *pdev = to_platform_device(dev->dev.parent); 467 468 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 469 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 470 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); 471 } 472 473 static u32 ax_get_msglevel(struct net_device *dev) 474 { 475 struct ei_device *ei_local = netdev_priv(dev); 476 477 return ei_local->msg_enable; 478 } 479 480 static void ax_set_msglevel(struct net_device *dev, u32 v) 481 { 482 struct ei_device *ei_local = netdev_priv(dev); 483 484 ei_local->msg_enable = v; 485 } 486 487 static const struct ethtool_ops ax_ethtool_ops = { 488 .get_drvinfo = ax_get_drvinfo, 489 .get_link = ethtool_op_get_link, 490 .get_ts_info = ethtool_op_get_ts_info, 491 .get_msglevel = ax_get_msglevel, 492 .set_msglevel = ax_set_msglevel, 493 .get_link_ksettings = phy_ethtool_get_link_ksettings, 494 .set_link_ksettings = phy_ethtool_set_link_ksettings, 495 }; 496 497 #ifdef CONFIG_AX88796_93CX6 498 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 499 { 500 struct ei_device *ei_local = eeprom->data; 501 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 502 503 eeprom->reg_data_in = reg & AX_MEMR_EEI; 504 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 505 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 506 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 507 } 508 509 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 510 { 511 struct ei_device *ei_local = eeprom->data; 512 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 513 514 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 515 516 if (eeprom->reg_data_in) 517 reg |= AX_MEMR_EEI; 518 if (eeprom->reg_data_clock) 519 reg |= AX_MEMR_EECLK; 520 if (eeprom->reg_chip_select) 521 reg |= AX_MEMR_EECS; 522 523 ei_outb(reg, ei_local->mem + AX_MEMR); 524 udelay(10); 525 } 526 #endif 527 528 static const struct net_device_ops ax_netdev_ops = { 529 .ndo_open = ax_open, 530 .ndo_stop = ax_close, 531 .ndo_do_ioctl = ax_ioctl, 532 533 .ndo_start_xmit = ax_ei_start_xmit, 534 .ndo_tx_timeout = ax_ei_tx_timeout, 535 .ndo_get_stats = ax_ei_get_stats, 536 .ndo_set_rx_mode = ax_ei_set_multicast_list, 537 .ndo_validate_addr = eth_validate_addr, 538 .ndo_set_mac_address = eth_mac_addr, 539 .ndo_change_mtu = eth_change_mtu, 540 #ifdef CONFIG_NET_POLL_CONTROLLER 541 .ndo_poll_controller = ax_ei_poll, 542 #endif 543 }; 544 545 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 546 { 547 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 548 549 if (level) 550 ax->reg_memr |= AX_MEMR_MDC; 551 else 552 ax->reg_memr &= ~AX_MEMR_MDC; 553 554 ei_outb(ax->reg_memr, ax->addr_memr); 555 } 556 557 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 558 { 559 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 560 561 if (output) 562 ax->reg_memr &= ~AX_MEMR_MDIR; 563 else 564 ax->reg_memr |= AX_MEMR_MDIR; 565 566 ei_outb(ax->reg_memr, ax->addr_memr); 567 } 568 569 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 570 { 571 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 572 573 if (value) 574 ax->reg_memr |= AX_MEMR_MDO; 575 else 576 ax->reg_memr &= ~AX_MEMR_MDO; 577 578 ei_outb(ax->reg_memr, ax->addr_memr); 579 } 580 581 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 582 { 583 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 584 int reg_memr = ei_inb(ax->addr_memr); 585 586 return reg_memr & AX_MEMR_MDI ? 1 : 0; 587 } 588 589 static struct mdiobb_ops bb_ops = { 590 .owner = THIS_MODULE, 591 .set_mdc = ax_bb_mdc, 592 .set_mdio_dir = ax_bb_dir, 593 .set_mdio_data = ax_bb_set_data, 594 .get_mdio_data = ax_bb_get_data, 595 }; 596 597 /* setup code */ 598 599 static int ax_mii_init(struct net_device *dev) 600 { 601 struct platform_device *pdev = to_platform_device(dev->dev.parent); 602 struct ei_device *ei_local = netdev_priv(dev); 603 struct ax_device *ax = to_ax_dev(dev); 604 int err; 605 606 ax->bb_ctrl.ops = &bb_ops; 607 ax->addr_memr = ei_local->mem + AX_MEMR; 608 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 609 if (!ax->mii_bus) { 610 err = -ENOMEM; 611 goto out; 612 } 613 614 ax->mii_bus->name = "ax88796_mii_bus"; 615 ax->mii_bus->parent = dev->dev.parent; 616 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 617 pdev->name, pdev->id); 618 619 err = mdiobus_register(ax->mii_bus); 620 if (err) 621 goto out_free_mdio_bitbang; 622 623 return 0; 624 625 out_free_mdio_bitbang: 626 free_mdio_bitbang(ax->mii_bus); 627 out: 628 return err; 629 } 630 631 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 632 { 633 void __iomem *ioaddr = ei_local->mem; 634 struct ax_device *ax = to_ax_dev(dev); 635 636 /* Select page 0 */ 637 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 638 639 /* set to byte access */ 640 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 641 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 642 } 643 644 /* 645 * ax_init_dev 646 * 647 * initialise the specified device, taking care to note the MAC 648 * address it may already have (if configured), ensure 649 * the device is ready to be used by lib8390.c and registerd with 650 * the network layer. 651 */ 652 static int ax_init_dev(struct net_device *dev) 653 { 654 struct ei_device *ei_local = netdev_priv(dev); 655 struct ax_device *ax = to_ax_dev(dev); 656 void __iomem *ioaddr = ei_local->mem; 657 unsigned int start_page; 658 unsigned int stop_page; 659 int ret; 660 int i; 661 662 ret = ax_initial_check(dev); 663 if (ret) 664 goto err_out; 665 666 /* setup goes here */ 667 668 ax_initial_setup(dev, ei_local); 669 670 /* read the mac from the card prom if we need it */ 671 672 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 673 unsigned char SA_prom[32]; 674 675 for (i = 0; i < sizeof(SA_prom); i += 2) { 676 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 677 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 678 } 679 680 if (ax->plat->wordlength == 2) 681 for (i = 0; i < 16; i++) 682 SA_prom[i] = SA_prom[i+i]; 683 684 memcpy(dev->dev_addr, SA_prom, ETH_ALEN); 685 } 686 687 #ifdef CONFIG_AX88796_93CX6 688 if (ax->plat->flags & AXFLG_HAS_93CX6) { 689 unsigned char mac_addr[ETH_ALEN]; 690 struct eeprom_93cx6 eeprom; 691 692 eeprom.data = ei_local; 693 eeprom.register_read = ax_eeprom_register_read; 694 eeprom.register_write = ax_eeprom_register_write; 695 eeprom.width = PCI_EEPROM_WIDTH_93C56; 696 697 eeprom_93cx6_multiread(&eeprom, 0, 698 (__le16 __force *)mac_addr, 699 sizeof(mac_addr) >> 1); 700 701 memcpy(dev->dev_addr, mac_addr, ETH_ALEN); 702 } 703 #endif 704 if (ax->plat->wordlength == 2) { 705 /* We must set the 8390 for word mode. */ 706 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 707 start_page = NESM_START_PG; 708 stop_page = NESM_STOP_PG; 709 } else { 710 start_page = NE1SM_START_PG; 711 stop_page = NE1SM_STOP_PG; 712 } 713 714 /* load the mac-address from the device */ 715 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 716 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 717 ei_local->mem + E8390_CMD); /* 0x61 */ 718 for (i = 0; i < ETH_ALEN; i++) 719 dev->dev_addr[i] = 720 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 721 } 722 723 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 724 ax->plat->mac_addr) 725 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 726 727 ax_reset_8390(dev); 728 729 ei_local->name = "AX88796"; 730 ei_local->tx_start_page = start_page; 731 ei_local->stop_page = stop_page; 732 ei_local->word16 = (ax->plat->wordlength == 2); 733 ei_local->rx_start_page = start_page + TX_PAGES; 734 735 #ifdef PACKETBUF_MEMSIZE 736 /* Allow the packet buffer size to be overridden by know-it-alls. */ 737 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 738 #endif 739 740 ei_local->reset_8390 = &ax_reset_8390; 741 ei_local->block_input = &ax_block_input; 742 ei_local->block_output = &ax_block_output; 743 ei_local->get_8390_hdr = &ax_get_8390_hdr; 744 ei_local->priv = 0; 745 ei_local->msg_enable = ax_msg_enable; 746 747 dev->netdev_ops = &ax_netdev_ops; 748 dev->ethtool_ops = &ax_ethtool_ops; 749 750 ret = ax_mii_init(dev); 751 if (ret) 752 goto out_irq; 753 754 ax_NS8390_init(dev, 0); 755 756 ret = register_netdev(dev); 757 if (ret) 758 goto out_irq; 759 760 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 761 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 762 dev->dev_addr); 763 764 return 0; 765 766 out_irq: 767 /* cleanup irq */ 768 free_irq(dev->irq, dev); 769 err_out: 770 return ret; 771 } 772 773 static int ax_remove(struct platform_device *pdev) 774 { 775 struct net_device *dev = platform_get_drvdata(pdev); 776 struct ei_device *ei_local = netdev_priv(dev); 777 struct ax_device *ax = to_ax_dev(dev); 778 struct resource *mem; 779 780 unregister_netdev(dev); 781 free_irq(dev->irq, dev); 782 783 iounmap(ei_local->mem); 784 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 785 release_mem_region(mem->start, resource_size(mem)); 786 787 if (ax->map2) { 788 iounmap(ax->map2); 789 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 790 release_mem_region(mem->start, resource_size(mem)); 791 } 792 793 free_netdev(dev); 794 795 return 0; 796 } 797 798 /* 799 * ax_probe 800 * 801 * This is the entry point when the platform device system uses to 802 * notify us of a new device to attach to. Allocate memory, find the 803 * resources and information passed, and map the necessary registers. 804 */ 805 static int ax_probe(struct platform_device *pdev) 806 { 807 struct net_device *dev; 808 struct ei_device *ei_local; 809 struct ax_device *ax; 810 struct resource *irq, *mem, *mem2; 811 unsigned long mem_size, mem2_size = 0; 812 int ret = 0; 813 814 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 815 if (dev == NULL) 816 return -ENOMEM; 817 818 /* ok, let's setup our device */ 819 SET_NETDEV_DEV(dev, &pdev->dev); 820 ei_local = netdev_priv(dev); 821 ax = to_ax_dev(dev); 822 823 ax->plat = dev_get_platdata(&pdev->dev); 824 platform_set_drvdata(pdev, dev); 825 826 ei_local->rxcr_base = ax->plat->rcr_val; 827 828 /* find the platform resources */ 829 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 830 if (!irq) { 831 dev_err(&pdev->dev, "no IRQ specified\n"); 832 ret = -ENXIO; 833 goto exit_mem; 834 } 835 836 dev->irq = irq->start; 837 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 838 839 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 840 if (!mem) { 841 dev_err(&pdev->dev, "no MEM specified\n"); 842 ret = -ENXIO; 843 goto exit_mem; 844 } 845 846 mem_size = resource_size(mem); 847 848 /* 849 * setup the register offsets from either the platform data or 850 * by using the size of the resource provided 851 */ 852 if (ax->plat->reg_offsets) 853 ei_local->reg_offset = ax->plat->reg_offsets; 854 else { 855 ei_local->reg_offset = ax->reg_offsets; 856 for (ret = 0; ret < 0x18; ret++) 857 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 858 } 859 860 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 861 dev_err(&pdev->dev, "cannot reserve registers\n"); 862 ret = -ENXIO; 863 goto exit_mem; 864 } 865 866 ei_local->mem = ioremap(mem->start, mem_size); 867 dev->base_addr = (unsigned long)ei_local->mem; 868 869 if (ei_local->mem == NULL) { 870 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 871 872 ret = -ENXIO; 873 goto exit_req; 874 } 875 876 /* look for reset area */ 877 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 878 if (!mem2) { 879 if (!ax->plat->reg_offsets) { 880 for (ret = 0; ret < 0x20; ret++) 881 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 882 } 883 } else { 884 mem2_size = resource_size(mem2); 885 886 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 887 dev_err(&pdev->dev, "cannot reserve registers\n"); 888 ret = -ENXIO; 889 goto exit_mem1; 890 } 891 892 ax->map2 = ioremap(mem2->start, mem2_size); 893 if (!ax->map2) { 894 dev_err(&pdev->dev, "cannot map reset register\n"); 895 ret = -ENXIO; 896 goto exit_mem2; 897 } 898 899 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 900 } 901 902 /* got resources, now initialise and register device */ 903 ret = ax_init_dev(dev); 904 if (!ret) 905 return 0; 906 907 if (!ax->map2) 908 goto exit_mem1; 909 910 iounmap(ax->map2); 911 912 exit_mem2: 913 if (mem2) 914 release_mem_region(mem2->start, mem2_size); 915 916 exit_mem1: 917 iounmap(ei_local->mem); 918 919 exit_req: 920 release_mem_region(mem->start, mem_size); 921 922 exit_mem: 923 free_netdev(dev); 924 925 return ret; 926 } 927 928 /* suspend and resume */ 929 930 #ifdef CONFIG_PM 931 static int ax_suspend(struct platform_device *dev, pm_message_t state) 932 { 933 struct net_device *ndev = platform_get_drvdata(dev); 934 struct ax_device *ax = to_ax_dev(ndev); 935 936 ax->resume_open = ax->running; 937 938 netif_device_detach(ndev); 939 ax_close(ndev); 940 941 return 0; 942 } 943 944 static int ax_resume(struct platform_device *pdev) 945 { 946 struct net_device *ndev = platform_get_drvdata(pdev); 947 struct ax_device *ax = to_ax_dev(ndev); 948 949 ax_initial_setup(ndev, netdev_priv(ndev)); 950 ax_NS8390_init(ndev, ax->resume_open); 951 netif_device_attach(ndev); 952 953 if (ax->resume_open) 954 ax_open(ndev); 955 956 return 0; 957 } 958 959 #else 960 #define ax_suspend NULL 961 #define ax_resume NULL 962 #endif 963 964 static struct platform_driver axdrv = { 965 .driver = { 966 .name = "ax88796", 967 }, 968 .probe = ax_probe, 969 .remove = ax_remove, 970 .suspend = ax_suspend, 971 .resume = ax_resume, 972 }; 973 974 module_platform_driver(axdrv); 975 976 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 977 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 978 MODULE_LICENSE("GPL v2"); 979 MODULE_ALIAS("platform:ax88796"); 980