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/init.h> 19 #include <linux/interrupt.h> 20 #include <linux/io.h> 21 #include <linux/platform_device.h> 22 #include <linux/delay.h> 23 #include <linux/timer.h> 24 #include <linux/netdevice.h> 25 #include <linux/etherdevice.h> 26 #include <linux/ethtool.h> 27 #include <linux/mdio-bitbang.h> 28 #include <linux/phy.h> 29 #include <linux/eeprom_93cx6.h> 30 #include <linux/slab.h> 31 32 #include <net/ax88796.h> 33 34 #include <asm/system.h> 35 36 /* Rename the lib8390.c functions to show that they are in this driver */ 37 #define __ei_open ax_ei_open 38 #define __ei_close ax_ei_close 39 #define __ei_poll ax_ei_poll 40 #define __ei_start_xmit ax_ei_start_xmit 41 #define __ei_tx_timeout ax_ei_tx_timeout 42 #define __ei_get_stats ax_ei_get_stats 43 #define __ei_set_multicast_list ax_ei_set_multicast_list 44 #define __ei_interrupt ax_ei_interrupt 45 #define ____alloc_ei_netdev ax__alloc_ei_netdev 46 #define __NS8390_init ax_NS8390_init 47 48 /* force unsigned long back to 'void __iomem *' */ 49 #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 50 51 #define ei_inb(_a) readb(ax_convert_addr(_a)) 52 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 53 54 #define ei_inb_p(_a) ei_inb(_a) 55 #define ei_outb_p(_v, _a) ei_outb(_v, _a) 56 57 /* define EI_SHIFT() to take into account our register offsets */ 58 #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 59 60 /* Ensure we have our RCR base value */ 61 #define AX88796_PLATFORM 62 63 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 64 65 #include "lib8390.c" 66 67 #define DRV_NAME "ax88796" 68 #define DRV_VERSION "1.00" 69 70 /* from ne.c */ 71 #define NE_CMD EI_SHIFT(0x00) 72 #define NE_RESET EI_SHIFT(0x1f) 73 #define NE_DATAPORT EI_SHIFT(0x10) 74 75 #define NE1SM_START_PG 0x20 /* First page of TX buffer */ 76 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 77 #define NESM_START_PG 0x40 /* First page of TX buffer */ 78 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 79 80 #define AX_GPOC_PPDSET BIT(6) 81 82 /* device private data */ 83 84 struct ax_device { 85 struct mii_bus *mii_bus; 86 struct mdiobb_ctrl bb_ctrl; 87 struct phy_device *phy_dev; 88 void __iomem *addr_memr; 89 u8 reg_memr; 90 int link; 91 int speed; 92 int duplex; 93 94 void __iomem *map2; 95 const struct ax_plat_data *plat; 96 97 unsigned char running; 98 unsigned char resume_open; 99 unsigned int irqflags; 100 101 u32 reg_offsets[0x20]; 102 }; 103 104 static inline struct ax_device *to_ax_dev(struct net_device *dev) 105 { 106 struct ei_device *ei_local = netdev_priv(dev); 107 return (struct ax_device *)(ei_local + 1); 108 } 109 110 /* 111 * ax_initial_check 112 * 113 * do an initial probe for the card to check wether it exists 114 * and is functional 115 */ 116 static int ax_initial_check(struct net_device *dev) 117 { 118 struct ei_device *ei_local = netdev_priv(dev); 119 void __iomem *ioaddr = ei_local->mem; 120 int reg0; 121 int regd; 122 123 reg0 = ei_inb(ioaddr); 124 if (reg0 == 0xFF) 125 return -ENODEV; 126 127 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 128 regd = ei_inb(ioaddr + 0x0d); 129 ei_outb(0xff, ioaddr + 0x0d); 130 ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 131 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 132 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { 133 ei_outb(reg0, ioaddr); 134 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ 135 return -ENODEV; 136 } 137 138 return 0; 139 } 140 141 /* 142 * Hard reset the card. This used to pause for the same period that a 143 * 8390 reset command required, but that shouldn't be necessary. 144 */ 145 static void ax_reset_8390(struct net_device *dev) 146 { 147 struct ei_device *ei_local = netdev_priv(dev); 148 unsigned long reset_start_time = jiffies; 149 void __iomem *addr = (void __iomem *)dev->base_addr; 150 151 if (ei_debug > 1) 152 netdev_dbg(dev, "resetting the 8390 t=%ld\n", jiffies); 153 154 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); 155 156 ei_local->txing = 0; 157 ei_local->dmaing = 0; 158 159 /* This check _should_not_ be necessary, omit eventually. */ 160 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { 161 if (jiffies - reset_start_time > 2 * HZ / 100) { 162 netdev_warn(dev, "%s: did not complete.\n", __func__); 163 break; 164 } 165 } 166 167 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ 168 } 169 170 171 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 172 int ring_page) 173 { 174 struct ei_device *ei_local = netdev_priv(dev); 175 void __iomem *nic_base = ei_local->mem; 176 177 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 178 if (ei_local->dmaing) { 179 netdev_err(dev, "DMAing conflict in %s " 180 "[DMAstat:%d][irqlock:%d].\n", 181 __func__, 182 ei_local->dmaing, ei_local->irqlock); 183 return; 184 } 185 186 ei_local->dmaing |= 0x01; 187 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 188 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 189 ei_outb(0, nic_base + EN0_RCNTHI); 190 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 191 ei_outb(ring_page, nic_base + EN0_RSARHI); 192 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 193 194 if (ei_local->word16) 195 readsw(nic_base + NE_DATAPORT, hdr, 196 sizeof(struct e8390_pkt_hdr) >> 1); 197 else 198 readsb(nic_base + NE_DATAPORT, hdr, 199 sizeof(struct e8390_pkt_hdr)); 200 201 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 202 ei_local->dmaing &= ~0x01; 203 204 le16_to_cpus(&hdr->count); 205 } 206 207 208 /* 209 * Block input and output, similar to the Crynwr packet driver. If 210 * you are porting to a new ethercard, look at the packet driver 211 * source for hints. The NEx000 doesn't share the on-board packet 212 * memory -- you have to put the packet out through the "remote DMA" 213 * dataport using ei_outb. 214 */ 215 static void ax_block_input(struct net_device *dev, int count, 216 struct sk_buff *skb, int ring_offset) 217 { 218 struct ei_device *ei_local = netdev_priv(dev); 219 void __iomem *nic_base = ei_local->mem; 220 char *buf = skb->data; 221 222 if (ei_local->dmaing) { 223 netdev_err(dev, 224 "DMAing conflict in %s " 225 "[DMAstat:%d][irqlock:%d].\n", 226 __func__, 227 ei_local->dmaing, ei_local->irqlock); 228 return; 229 } 230 231 ei_local->dmaing |= 0x01; 232 233 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 234 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 235 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 236 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 237 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 238 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 239 240 if (ei_local->word16) { 241 readsw(nic_base + NE_DATAPORT, buf, count >> 1); 242 if (count & 0x01) 243 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 244 245 } else { 246 readsb(nic_base + NE_DATAPORT, buf, count); 247 } 248 249 ei_local->dmaing &= ~1; 250 } 251 252 static void ax_block_output(struct net_device *dev, int count, 253 const unsigned char *buf, const int start_page) 254 { 255 struct ei_device *ei_local = netdev_priv(dev); 256 void __iomem *nic_base = ei_local->mem; 257 unsigned long dma_start; 258 259 /* 260 * Round the count up for word writes. Do we need to do this? 261 * What effect will an odd byte count have on the 8390? I 262 * should check someday. 263 */ 264 if (ei_local->word16 && (count & 0x01)) 265 count++; 266 267 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 268 if (ei_local->dmaing) { 269 netdev_err(dev, "DMAing conflict in %s." 270 "[DMAstat:%d][irqlock:%d]\n", 271 __func__, 272 ei_local->dmaing, ei_local->irqlock); 273 return; 274 } 275 276 ei_local->dmaing |= 0x01; 277 /* We should already be in page 0, but to be safe... */ 278 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 279 280 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 281 282 /* Now the normal output. */ 283 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 284 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 285 ei_outb(0x00, nic_base + EN0_RSARLO); 286 ei_outb(start_page, nic_base + EN0_RSARHI); 287 288 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 289 if (ei_local->word16) 290 writesw(nic_base + NE_DATAPORT, buf, count >> 1); 291 else 292 writesb(nic_base + NE_DATAPORT, buf, count); 293 294 dma_start = jiffies; 295 296 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 297 if (jiffies - dma_start > 2 * HZ / 100) { /* 20ms */ 298 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 299 ax_reset_8390(dev); 300 ax_NS8390_init(dev, 1); 301 break; 302 } 303 } 304 305 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 306 ei_local->dmaing &= ~0x01; 307 } 308 309 /* definitions for accessing MII/EEPROM interface */ 310 311 #define AX_MEMR EI_SHIFT(0x14) 312 #define AX_MEMR_MDC BIT(0) 313 #define AX_MEMR_MDIR BIT(1) 314 #define AX_MEMR_MDI BIT(2) 315 #define AX_MEMR_MDO BIT(3) 316 #define AX_MEMR_EECS BIT(4) 317 #define AX_MEMR_EEI BIT(5) 318 #define AX_MEMR_EEO BIT(6) 319 #define AX_MEMR_EECLK BIT(7) 320 321 static void ax_handle_link_change(struct net_device *dev) 322 { 323 struct ax_device *ax = to_ax_dev(dev); 324 struct phy_device *phy_dev = ax->phy_dev; 325 int status_change = 0; 326 327 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 328 (ax->duplex != phy_dev->duplex))) { 329 330 ax->speed = phy_dev->speed; 331 ax->duplex = phy_dev->duplex; 332 status_change = 1; 333 } 334 335 if (phy_dev->link != ax->link) { 336 if (!phy_dev->link) { 337 ax->speed = 0; 338 ax->duplex = -1; 339 } 340 ax->link = phy_dev->link; 341 342 status_change = 1; 343 } 344 345 if (status_change) 346 phy_print_status(phy_dev); 347 } 348 349 static int ax_mii_probe(struct net_device *dev) 350 { 351 struct ax_device *ax = to_ax_dev(dev); 352 struct phy_device *phy_dev = NULL; 353 int ret; 354 355 /* find the first phy */ 356 phy_dev = phy_find_first(ax->mii_bus); 357 if (!phy_dev) { 358 netdev_err(dev, "no PHY found\n"); 359 return -ENODEV; 360 } 361 362 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 0, 363 PHY_INTERFACE_MODE_MII); 364 if (ret) { 365 netdev_err(dev, "Could not attach to PHY\n"); 366 return ret; 367 } 368 369 /* mask with MAC supported features */ 370 phy_dev->supported &= PHY_BASIC_FEATURES; 371 phy_dev->advertising = phy_dev->supported; 372 373 ax->phy_dev = phy_dev; 374 375 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 376 phy_dev->drv->name, dev_name(&phy_dev->dev), phy_dev->irq); 377 378 return 0; 379 } 380 381 static void ax_phy_switch(struct net_device *dev, int on) 382 { 383 struct ei_device *ei_local = netdev_priv(dev); 384 struct ax_device *ax = to_ax_dev(dev); 385 386 u8 reg_gpoc = ax->plat->gpoc_val; 387 388 if (!!on) 389 reg_gpoc &= ~AX_GPOC_PPDSET; 390 else 391 reg_gpoc |= AX_GPOC_PPDSET; 392 393 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 394 } 395 396 static int ax_open(struct net_device *dev) 397 { 398 struct ax_device *ax = to_ax_dev(dev); 399 int ret; 400 401 netdev_dbg(dev, "open\n"); 402 403 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 404 dev->name, dev); 405 if (ret) 406 goto failed_request_irq; 407 408 /* turn the phy on (if turned off) */ 409 ax_phy_switch(dev, 1); 410 411 ret = ax_mii_probe(dev); 412 if (ret) 413 goto failed_mii_probe; 414 phy_start(ax->phy_dev); 415 416 ret = ax_ei_open(dev); 417 if (ret) 418 goto failed_ax_ei_open; 419 420 ax->running = 1; 421 422 return 0; 423 424 failed_ax_ei_open: 425 phy_disconnect(ax->phy_dev); 426 failed_mii_probe: 427 ax_phy_switch(dev, 0); 428 free_irq(dev->irq, dev); 429 failed_request_irq: 430 return ret; 431 } 432 433 static int ax_close(struct net_device *dev) 434 { 435 struct ax_device *ax = to_ax_dev(dev); 436 437 netdev_dbg(dev, "close\n"); 438 439 ax->running = 0; 440 wmb(); 441 442 ax_ei_close(dev); 443 444 /* turn the phy off */ 445 ax_phy_switch(dev, 0); 446 phy_disconnect(ax->phy_dev); 447 448 free_irq(dev->irq, dev); 449 return 0; 450 } 451 452 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 453 { 454 struct ax_device *ax = to_ax_dev(dev); 455 struct phy_device *phy_dev = ax->phy_dev; 456 457 if (!netif_running(dev)) 458 return -EINVAL; 459 460 if (!phy_dev) 461 return -ENODEV; 462 463 return phy_mii_ioctl(phy_dev, req, cmd); 464 } 465 466 /* ethtool ops */ 467 468 static void ax_get_drvinfo(struct net_device *dev, 469 struct ethtool_drvinfo *info) 470 { 471 struct platform_device *pdev = to_platform_device(dev->dev.parent); 472 473 strcpy(info->driver, DRV_NAME); 474 strcpy(info->version, DRV_VERSION); 475 strcpy(info->bus_info, pdev->name); 476 } 477 478 static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) 479 { 480 struct ax_device *ax = to_ax_dev(dev); 481 struct phy_device *phy_dev = ax->phy_dev; 482 483 if (!phy_dev) 484 return -ENODEV; 485 486 return phy_ethtool_gset(phy_dev, cmd); 487 } 488 489 static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) 490 { 491 struct ax_device *ax = to_ax_dev(dev); 492 struct phy_device *phy_dev = ax->phy_dev; 493 494 if (!phy_dev) 495 return -ENODEV; 496 497 return phy_ethtool_sset(phy_dev, cmd); 498 } 499 500 static const struct ethtool_ops ax_ethtool_ops = { 501 .get_drvinfo = ax_get_drvinfo, 502 .get_settings = ax_get_settings, 503 .set_settings = ax_set_settings, 504 .get_link = ethtool_op_get_link, 505 }; 506 507 #ifdef CONFIG_AX88796_93CX6 508 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 509 { 510 struct ei_device *ei_local = eeprom->data; 511 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 512 513 eeprom->reg_data_in = reg & AX_MEMR_EEI; 514 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 515 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 516 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 517 } 518 519 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 520 { 521 struct ei_device *ei_local = eeprom->data; 522 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 523 524 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 525 526 if (eeprom->reg_data_in) 527 reg |= AX_MEMR_EEI; 528 if (eeprom->reg_data_clock) 529 reg |= AX_MEMR_EECLK; 530 if (eeprom->reg_chip_select) 531 reg |= AX_MEMR_EECS; 532 533 ei_outb(reg, ei_local->mem + AX_MEMR); 534 udelay(10); 535 } 536 #endif 537 538 static const struct net_device_ops ax_netdev_ops = { 539 .ndo_open = ax_open, 540 .ndo_stop = ax_close, 541 .ndo_do_ioctl = ax_ioctl, 542 543 .ndo_start_xmit = ax_ei_start_xmit, 544 .ndo_tx_timeout = ax_ei_tx_timeout, 545 .ndo_get_stats = ax_ei_get_stats, 546 .ndo_set_rx_mode = ax_ei_set_multicast_list, 547 .ndo_validate_addr = eth_validate_addr, 548 .ndo_set_mac_address = eth_mac_addr, 549 .ndo_change_mtu = eth_change_mtu, 550 #ifdef CONFIG_NET_POLL_CONTROLLER 551 .ndo_poll_controller = ax_ei_poll, 552 #endif 553 }; 554 555 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 556 { 557 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 558 559 if (level) 560 ax->reg_memr |= AX_MEMR_MDC; 561 else 562 ax->reg_memr &= ~AX_MEMR_MDC; 563 564 ei_outb(ax->reg_memr, ax->addr_memr); 565 } 566 567 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 568 { 569 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 570 571 if (output) 572 ax->reg_memr &= ~AX_MEMR_MDIR; 573 else 574 ax->reg_memr |= AX_MEMR_MDIR; 575 576 ei_outb(ax->reg_memr, ax->addr_memr); 577 } 578 579 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 580 { 581 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 582 583 if (value) 584 ax->reg_memr |= AX_MEMR_MDO; 585 else 586 ax->reg_memr &= ~AX_MEMR_MDO; 587 588 ei_outb(ax->reg_memr, ax->addr_memr); 589 } 590 591 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 592 { 593 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 594 int reg_memr = ei_inb(ax->addr_memr); 595 596 return reg_memr & AX_MEMR_MDI ? 1 : 0; 597 } 598 599 static struct mdiobb_ops bb_ops = { 600 .owner = THIS_MODULE, 601 .set_mdc = ax_bb_mdc, 602 .set_mdio_dir = ax_bb_dir, 603 .set_mdio_data = ax_bb_set_data, 604 .get_mdio_data = ax_bb_get_data, 605 }; 606 607 /* setup code */ 608 609 static int ax_mii_init(struct net_device *dev) 610 { 611 struct platform_device *pdev = to_platform_device(dev->dev.parent); 612 struct ei_device *ei_local = netdev_priv(dev); 613 struct ax_device *ax = to_ax_dev(dev); 614 int err, i; 615 616 ax->bb_ctrl.ops = &bb_ops; 617 ax->addr_memr = ei_local->mem + AX_MEMR; 618 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 619 if (!ax->mii_bus) { 620 err = -ENOMEM; 621 goto out; 622 } 623 624 ax->mii_bus->name = "ax88796_mii_bus"; 625 ax->mii_bus->parent = dev->dev.parent; 626 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 627 pdev->name, pdev->id); 628 629 ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); 630 if (!ax->mii_bus->irq) { 631 err = -ENOMEM; 632 goto out_free_mdio_bitbang; 633 } 634 635 for (i = 0; i < PHY_MAX_ADDR; i++) 636 ax->mii_bus->irq[i] = PHY_POLL; 637 638 err = mdiobus_register(ax->mii_bus); 639 if (err) 640 goto out_free_irq; 641 642 return 0; 643 644 out_free_irq: 645 kfree(ax->mii_bus->irq); 646 out_free_mdio_bitbang: 647 free_mdio_bitbang(ax->mii_bus); 648 out: 649 return err; 650 } 651 652 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 653 { 654 void __iomem *ioaddr = ei_local->mem; 655 struct ax_device *ax = to_ax_dev(dev); 656 657 /* Select page 0 */ 658 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 659 660 /* set to byte access */ 661 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 662 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 663 } 664 665 /* 666 * ax_init_dev 667 * 668 * initialise the specified device, taking care to note the MAC 669 * address it may already have (if configured), ensure 670 * the device is ready to be used by lib8390.c and registerd with 671 * the network layer. 672 */ 673 static int ax_init_dev(struct net_device *dev) 674 { 675 struct ei_device *ei_local = netdev_priv(dev); 676 struct ax_device *ax = to_ax_dev(dev); 677 void __iomem *ioaddr = ei_local->mem; 678 unsigned int start_page; 679 unsigned int stop_page; 680 int ret; 681 int i; 682 683 ret = ax_initial_check(dev); 684 if (ret) 685 goto err_out; 686 687 /* setup goes here */ 688 689 ax_initial_setup(dev, ei_local); 690 691 /* read the mac from the card prom if we need it */ 692 693 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 694 unsigned char SA_prom[32]; 695 696 for (i = 0; i < sizeof(SA_prom); i += 2) { 697 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 698 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 699 } 700 701 if (ax->plat->wordlength == 2) 702 for (i = 0; i < 16; i++) 703 SA_prom[i] = SA_prom[i+i]; 704 705 memcpy(dev->dev_addr, SA_prom, 6); 706 } 707 708 #ifdef CONFIG_AX88796_93CX6 709 if (ax->plat->flags & AXFLG_HAS_93CX6) { 710 unsigned char mac_addr[6]; 711 struct eeprom_93cx6 eeprom; 712 713 eeprom.data = ei_local; 714 eeprom.register_read = ax_eeprom_register_read; 715 eeprom.register_write = ax_eeprom_register_write; 716 eeprom.width = PCI_EEPROM_WIDTH_93C56; 717 718 eeprom_93cx6_multiread(&eeprom, 0, 719 (__le16 __force *)mac_addr, 720 sizeof(mac_addr) >> 1); 721 722 memcpy(dev->dev_addr, mac_addr, 6); 723 } 724 #endif 725 if (ax->plat->wordlength == 2) { 726 /* We must set the 8390 for word mode. */ 727 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 728 start_page = NESM_START_PG; 729 stop_page = NESM_STOP_PG; 730 } else { 731 start_page = NE1SM_START_PG; 732 stop_page = NE1SM_STOP_PG; 733 } 734 735 /* load the mac-address from the device */ 736 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 737 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 738 ei_local->mem + E8390_CMD); /* 0x61 */ 739 for (i = 0; i < ETH_ALEN; i++) 740 dev->dev_addr[i] = 741 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 742 } 743 744 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 745 ax->plat->mac_addr) 746 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 747 748 ax_reset_8390(dev); 749 750 ei_local->name = "AX88796"; 751 ei_local->tx_start_page = start_page; 752 ei_local->stop_page = stop_page; 753 ei_local->word16 = (ax->plat->wordlength == 2); 754 ei_local->rx_start_page = start_page + TX_PAGES; 755 756 #ifdef PACKETBUF_MEMSIZE 757 /* Allow the packet buffer size to be overridden by know-it-alls. */ 758 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 759 #endif 760 761 ei_local->reset_8390 = &ax_reset_8390; 762 ei_local->block_input = &ax_block_input; 763 ei_local->block_output = &ax_block_output; 764 ei_local->get_8390_hdr = &ax_get_8390_hdr; 765 ei_local->priv = 0; 766 767 dev->netdev_ops = &ax_netdev_ops; 768 dev->ethtool_ops = &ax_ethtool_ops; 769 770 ret = ax_mii_init(dev); 771 if (ret) 772 goto out_irq; 773 774 ax_NS8390_init(dev, 0); 775 776 ret = register_netdev(dev); 777 if (ret) 778 goto out_irq; 779 780 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 781 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 782 dev->dev_addr); 783 784 return 0; 785 786 out_irq: 787 /* cleanup irq */ 788 free_irq(dev->irq, dev); 789 err_out: 790 return ret; 791 } 792 793 static int ax_remove(struct platform_device *pdev) 794 { 795 struct net_device *dev = platform_get_drvdata(pdev); 796 struct ei_device *ei_local = netdev_priv(dev); 797 struct ax_device *ax = to_ax_dev(dev); 798 struct resource *mem; 799 800 unregister_netdev(dev); 801 free_irq(dev->irq, dev); 802 803 iounmap(ei_local->mem); 804 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 805 release_mem_region(mem->start, resource_size(mem)); 806 807 if (ax->map2) { 808 iounmap(ax->map2); 809 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 810 release_mem_region(mem->start, resource_size(mem)); 811 } 812 813 free_netdev(dev); 814 815 return 0; 816 } 817 818 /* 819 * ax_probe 820 * 821 * This is the entry point when the platform device system uses to 822 * notify us of a new device to attach to. Allocate memory, find the 823 * resources and information passed, and map the necessary registers. 824 */ 825 static int ax_probe(struct platform_device *pdev) 826 { 827 struct net_device *dev; 828 struct ei_device *ei_local; 829 struct ax_device *ax; 830 struct resource *irq, *mem, *mem2; 831 resource_size_t mem_size, mem2_size = 0; 832 int ret = 0; 833 834 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 835 if (dev == NULL) 836 return -ENOMEM; 837 838 /* ok, let's setup our device */ 839 SET_NETDEV_DEV(dev, &pdev->dev); 840 ei_local = netdev_priv(dev); 841 ax = to_ax_dev(dev); 842 843 ax->plat = pdev->dev.platform_data; 844 platform_set_drvdata(pdev, dev); 845 846 ei_local->rxcr_base = ax->plat->rcr_val; 847 848 /* find the platform resources */ 849 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 850 if (!irq) { 851 dev_err(&pdev->dev, "no IRQ specified\n"); 852 ret = -ENXIO; 853 goto exit_mem; 854 } 855 856 dev->irq = irq->start; 857 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 858 859 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 860 if (!mem) { 861 dev_err(&pdev->dev, "no MEM specified\n"); 862 ret = -ENXIO; 863 goto exit_mem; 864 } 865 866 mem_size = resource_size(mem); 867 868 /* 869 * setup the register offsets from either the platform data or 870 * by using the size of the resource provided 871 */ 872 if (ax->plat->reg_offsets) 873 ei_local->reg_offset = ax->plat->reg_offsets; 874 else { 875 ei_local->reg_offset = ax->reg_offsets; 876 for (ret = 0; ret < 0x18; ret++) 877 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 878 } 879 880 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 881 dev_err(&pdev->dev, "cannot reserve registers\n"); 882 ret = -ENXIO; 883 goto exit_mem; 884 } 885 886 ei_local->mem = ioremap(mem->start, mem_size); 887 dev->base_addr = (unsigned long)ei_local->mem; 888 889 if (ei_local->mem == NULL) { 890 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 891 892 ret = -ENXIO; 893 goto exit_req; 894 } 895 896 /* look for reset area */ 897 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 898 if (!mem2) { 899 if (!ax->plat->reg_offsets) { 900 for (ret = 0; ret < 0x20; ret++) 901 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 902 } 903 } else { 904 mem2_size = resource_size(mem2); 905 906 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 907 dev_err(&pdev->dev, "cannot reserve registers\n"); 908 ret = -ENXIO; 909 goto exit_mem1; 910 } 911 912 ax->map2 = ioremap(mem2->start, mem2_size); 913 if (!ax->map2) { 914 dev_err(&pdev->dev, "cannot map reset register\n"); 915 ret = -ENXIO; 916 goto exit_mem2; 917 } 918 919 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 920 } 921 922 /* got resources, now initialise and register device */ 923 ret = ax_init_dev(dev); 924 if (!ret) 925 return 0; 926 927 if (!ax->map2) 928 goto exit_mem1; 929 930 iounmap(ax->map2); 931 932 exit_mem2: 933 release_mem_region(mem2->start, mem2_size); 934 935 exit_mem1: 936 iounmap(ei_local->mem); 937 938 exit_req: 939 release_mem_region(mem->start, mem_size); 940 941 exit_mem: 942 free_netdev(dev); 943 944 return ret; 945 } 946 947 /* suspend and resume */ 948 949 #ifdef CONFIG_PM 950 static int ax_suspend(struct platform_device *dev, pm_message_t state) 951 { 952 struct net_device *ndev = platform_get_drvdata(dev); 953 struct ax_device *ax = to_ax_dev(ndev); 954 955 ax->resume_open = ax->running; 956 957 netif_device_detach(ndev); 958 ax_close(ndev); 959 960 return 0; 961 } 962 963 static int ax_resume(struct platform_device *pdev) 964 { 965 struct net_device *ndev = platform_get_drvdata(pdev); 966 struct ax_device *ax = to_ax_dev(ndev); 967 968 ax_initial_setup(ndev, netdev_priv(ndev)); 969 ax_NS8390_init(ndev, ax->resume_open); 970 netif_device_attach(ndev); 971 972 if (ax->resume_open) 973 ax_open(ndev); 974 975 return 0; 976 } 977 978 #else 979 #define ax_suspend NULL 980 #define ax_resume NULL 981 #endif 982 983 static struct platform_driver axdrv = { 984 .driver = { 985 .name = "ax88796", 986 .owner = THIS_MODULE, 987 }, 988 .probe = ax_probe, 989 .remove = ax_remove, 990 .suspend = ax_suspend, 991 .resume = ax_resume, 992 }; 993 994 module_platform_driver(axdrv); 995 996 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 997 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 998 MODULE_LICENSE("GPL v2"); 999 MODULE_ALIAS("platform:ax88796"); 1000