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