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 /* Wrapper for __ei_interrupt for platforms that have a platform-specific 167 * way to find out whether the interrupt request might be caused by 168 * the ax88796 chip. 169 */ 170 static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) 171 { 172 struct net_device *dev = dev_id; 173 struct ax_device *ax = to_ax_dev(dev); 174 struct platform_device *pdev = to_platform_device(dev->dev.parent); 175 176 if (!ax->plat->check_irq(pdev)) 177 return IRQ_NONE; 178 179 return ax_ei_interrupt(irq, dev_id); 180 } 181 182 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 183 int ring_page) 184 { 185 struct ei_device *ei_local = netdev_priv(dev); 186 void __iomem *nic_base = ei_local->mem; 187 188 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 189 if (ei_local->dmaing) { 190 netdev_err(dev, "DMAing conflict in %s " 191 "[DMAstat:%d][irqlock:%d].\n", 192 __func__, 193 ei_local->dmaing, ei_local->irqlock); 194 return; 195 } 196 197 ei_local->dmaing |= 0x01; 198 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 199 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 200 ei_outb(0, nic_base + EN0_RCNTHI); 201 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 202 ei_outb(ring_page, nic_base + EN0_RSARHI); 203 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 204 205 if (ei_local->word16) 206 ioread16_rep(nic_base + NE_DATAPORT, hdr, 207 sizeof(struct e8390_pkt_hdr) >> 1); 208 else 209 ioread8_rep(nic_base + NE_DATAPORT, hdr, 210 sizeof(struct e8390_pkt_hdr)); 211 212 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 213 ei_local->dmaing &= ~0x01; 214 215 le16_to_cpus(&hdr->count); 216 } 217 218 219 /* 220 * Block input and output, similar to the Crynwr packet driver. If 221 * you are porting to a new ethercard, look at the packet driver 222 * source for hints. The NEx000 doesn't share the on-board packet 223 * memory -- you have to put the packet out through the "remote DMA" 224 * dataport using ei_outb. 225 */ 226 static void ax_block_input(struct net_device *dev, int count, 227 struct sk_buff *skb, int ring_offset) 228 { 229 struct ei_device *ei_local = netdev_priv(dev); 230 void __iomem *nic_base = ei_local->mem; 231 char *buf = skb->data; 232 233 if (ei_local->dmaing) { 234 netdev_err(dev, 235 "DMAing conflict in %s " 236 "[DMAstat:%d][irqlock:%d].\n", 237 __func__, 238 ei_local->dmaing, ei_local->irqlock); 239 return; 240 } 241 242 ei_local->dmaing |= 0x01; 243 244 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 245 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 246 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 247 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 248 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 249 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 250 251 if (ei_local->word16) { 252 ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 253 if (count & 0x01) 254 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 255 256 } else { 257 ioread8_rep(nic_base + NE_DATAPORT, buf, count); 258 } 259 260 ei_local->dmaing &= ~1; 261 } 262 263 static void ax_block_output(struct net_device *dev, int count, 264 const unsigned char *buf, const int start_page) 265 { 266 struct ei_device *ei_local = netdev_priv(dev); 267 void __iomem *nic_base = ei_local->mem; 268 unsigned long dma_start; 269 270 /* 271 * Round the count up for word writes. Do we need to do this? 272 * What effect will an odd byte count have on the 8390? I 273 * should check someday. 274 */ 275 if (ei_local->word16 && (count & 0x01)) 276 count++; 277 278 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 279 if (ei_local->dmaing) { 280 netdev_err(dev, "DMAing conflict in %s." 281 "[DMAstat:%d][irqlock:%d]\n", 282 __func__, 283 ei_local->dmaing, ei_local->irqlock); 284 return; 285 } 286 287 ei_local->dmaing |= 0x01; 288 /* We should already be in page 0, but to be safe... */ 289 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 290 291 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 292 293 /* Now the normal output. */ 294 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 295 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 296 ei_outb(0x00, nic_base + EN0_RSARLO); 297 ei_outb(start_page, nic_base + EN0_RSARHI); 298 299 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 300 if (ei_local->word16) 301 iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 302 else 303 iowrite8_rep(nic_base + NE_DATAPORT, buf, count); 304 305 dma_start = jiffies; 306 307 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 308 if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ 309 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 310 ax_reset_8390(dev); 311 ax_NS8390_init(dev, 1); 312 break; 313 } 314 } 315 316 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 317 ei_local->dmaing &= ~0x01; 318 } 319 320 /* definitions for accessing MII/EEPROM interface */ 321 322 #define AX_MEMR EI_SHIFT(0x14) 323 #define AX_MEMR_MDC BIT(0) 324 #define AX_MEMR_MDIR BIT(1) 325 #define AX_MEMR_MDI BIT(2) 326 #define AX_MEMR_MDO BIT(3) 327 #define AX_MEMR_EECS BIT(4) 328 #define AX_MEMR_EEI BIT(5) 329 #define AX_MEMR_EEO BIT(6) 330 #define AX_MEMR_EECLK BIT(7) 331 332 static void ax_handle_link_change(struct net_device *dev) 333 { 334 struct ax_device *ax = to_ax_dev(dev); 335 struct phy_device *phy_dev = dev->phydev; 336 int status_change = 0; 337 338 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 339 (ax->duplex != phy_dev->duplex))) { 340 341 ax->speed = phy_dev->speed; 342 ax->duplex = phy_dev->duplex; 343 status_change = 1; 344 } 345 346 if (phy_dev->link != ax->link) { 347 if (!phy_dev->link) { 348 ax->speed = 0; 349 ax->duplex = -1; 350 } 351 ax->link = phy_dev->link; 352 353 status_change = 1; 354 } 355 356 if (status_change) 357 phy_print_status(phy_dev); 358 } 359 360 static int ax_mii_probe(struct net_device *dev) 361 { 362 struct ax_device *ax = to_ax_dev(dev); 363 struct phy_device *phy_dev = NULL; 364 int ret; 365 366 /* find the first phy */ 367 phy_dev = phy_find_first(ax->mii_bus); 368 if (!phy_dev) { 369 netdev_err(dev, "no PHY found\n"); 370 return -ENODEV; 371 } 372 373 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 374 PHY_INTERFACE_MODE_MII); 375 if (ret) { 376 netdev_err(dev, "Could not attach to PHY\n"); 377 return ret; 378 } 379 380 phy_set_max_speed(phy_dev, SPEED_100); 381 382 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 383 phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq); 384 385 return 0; 386 } 387 388 static void ax_phy_switch(struct net_device *dev, int on) 389 { 390 struct ei_device *ei_local = netdev_priv(dev); 391 struct ax_device *ax = to_ax_dev(dev); 392 393 u8 reg_gpoc = ax->plat->gpoc_val; 394 395 if (!!on) 396 reg_gpoc &= ~AX_GPOC_PPDSET; 397 else 398 reg_gpoc |= AX_GPOC_PPDSET; 399 400 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 401 } 402 403 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 404 { 405 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 406 407 if (level) 408 ax->reg_memr |= AX_MEMR_MDC; 409 else 410 ax->reg_memr &= ~AX_MEMR_MDC; 411 412 ei_outb(ax->reg_memr, ax->addr_memr); 413 } 414 415 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 416 { 417 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 418 419 if (output) 420 ax->reg_memr &= ~AX_MEMR_MDIR; 421 else 422 ax->reg_memr |= AX_MEMR_MDIR; 423 424 ei_outb(ax->reg_memr, ax->addr_memr); 425 } 426 427 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 428 { 429 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 430 431 if (value) 432 ax->reg_memr |= AX_MEMR_MDO; 433 else 434 ax->reg_memr &= ~AX_MEMR_MDO; 435 436 ei_outb(ax->reg_memr, ax->addr_memr); 437 } 438 439 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 440 { 441 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 442 int reg_memr = ei_inb(ax->addr_memr); 443 444 return reg_memr & AX_MEMR_MDI ? 1 : 0; 445 } 446 447 static const struct mdiobb_ops bb_ops = { 448 .owner = THIS_MODULE, 449 .set_mdc = ax_bb_mdc, 450 .set_mdio_dir = ax_bb_dir, 451 .set_mdio_data = ax_bb_set_data, 452 .get_mdio_data = ax_bb_get_data, 453 }; 454 455 static int ax_mii_init(struct net_device *dev) 456 { 457 struct platform_device *pdev = to_platform_device(dev->dev.parent); 458 struct ei_device *ei_local = netdev_priv(dev); 459 struct ax_device *ax = to_ax_dev(dev); 460 int err; 461 462 ax->bb_ctrl.ops = &bb_ops; 463 ax->addr_memr = ei_local->mem + AX_MEMR; 464 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 465 if (!ax->mii_bus) { 466 err = -ENOMEM; 467 goto out; 468 } 469 470 ax->mii_bus->name = "ax88796_mii_bus"; 471 ax->mii_bus->parent = dev->dev.parent; 472 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 473 pdev->name, pdev->id); 474 475 err = mdiobus_register(ax->mii_bus); 476 if (err) 477 goto out_free_mdio_bitbang; 478 479 return 0; 480 481 out_free_mdio_bitbang: 482 free_mdio_bitbang(ax->mii_bus); 483 out: 484 return err; 485 } 486 487 static int ax_open(struct net_device *dev) 488 { 489 struct ax_device *ax = to_ax_dev(dev); 490 int ret; 491 492 netdev_dbg(dev, "open\n"); 493 494 ret = ax_mii_init(dev); 495 if (ret) 496 goto failed_mii; 497 498 if (ax->plat->check_irq) 499 ret = request_irq(dev->irq, ax_ei_interrupt_filtered, 500 ax->irqflags, dev->name, dev); 501 else 502 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 503 dev->name, dev); 504 if (ret) 505 goto failed_request_irq; 506 507 /* turn the phy on (if turned off) */ 508 ax_phy_switch(dev, 1); 509 510 ret = ax_mii_probe(dev); 511 if (ret) 512 goto failed_mii_probe; 513 phy_start(dev->phydev); 514 515 ret = ax_ei_open(dev); 516 if (ret) 517 goto failed_ax_ei_open; 518 519 ax->running = 1; 520 521 return 0; 522 523 failed_ax_ei_open: 524 phy_disconnect(dev->phydev); 525 failed_mii_probe: 526 ax_phy_switch(dev, 0); 527 free_irq(dev->irq, dev); 528 failed_request_irq: 529 /* unregister mdiobus */ 530 mdiobus_unregister(ax->mii_bus); 531 free_mdio_bitbang(ax->mii_bus); 532 failed_mii: 533 return ret; 534 } 535 536 static int ax_close(struct net_device *dev) 537 { 538 struct ax_device *ax = to_ax_dev(dev); 539 540 netdev_dbg(dev, "close\n"); 541 542 ax->running = 0; 543 wmb(); 544 545 ax_ei_close(dev); 546 547 /* turn the phy off */ 548 ax_phy_switch(dev, 0); 549 phy_disconnect(dev->phydev); 550 551 free_irq(dev->irq, dev); 552 553 mdiobus_unregister(ax->mii_bus); 554 free_mdio_bitbang(ax->mii_bus); 555 return 0; 556 } 557 558 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 559 { 560 struct phy_device *phy_dev = dev->phydev; 561 562 if (!netif_running(dev)) 563 return -EINVAL; 564 565 if (!phy_dev) 566 return -ENODEV; 567 568 return phy_mii_ioctl(phy_dev, req, cmd); 569 } 570 571 /* ethtool ops */ 572 573 static void ax_get_drvinfo(struct net_device *dev, 574 struct ethtool_drvinfo *info) 575 { 576 struct platform_device *pdev = to_platform_device(dev->dev.parent); 577 578 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 579 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 580 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); 581 } 582 583 static u32 ax_get_msglevel(struct net_device *dev) 584 { 585 struct ei_device *ei_local = netdev_priv(dev); 586 587 return ei_local->msg_enable; 588 } 589 590 static void ax_set_msglevel(struct net_device *dev, u32 v) 591 { 592 struct ei_device *ei_local = netdev_priv(dev); 593 594 ei_local->msg_enable = v; 595 } 596 597 static const struct ethtool_ops ax_ethtool_ops = { 598 .get_drvinfo = ax_get_drvinfo, 599 .get_link = ethtool_op_get_link, 600 .get_ts_info = ethtool_op_get_ts_info, 601 .get_msglevel = ax_get_msglevel, 602 .set_msglevel = ax_set_msglevel, 603 .get_link_ksettings = phy_ethtool_get_link_ksettings, 604 .set_link_ksettings = phy_ethtool_set_link_ksettings, 605 }; 606 607 #ifdef CONFIG_AX88796_93CX6 608 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 609 { 610 struct ei_device *ei_local = eeprom->data; 611 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 612 613 eeprom->reg_data_in = reg & AX_MEMR_EEI; 614 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 615 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 616 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 617 } 618 619 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 620 { 621 struct ei_device *ei_local = eeprom->data; 622 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 623 624 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 625 626 if (eeprom->reg_data_in) 627 reg |= AX_MEMR_EEI; 628 if (eeprom->reg_data_clock) 629 reg |= AX_MEMR_EECLK; 630 if (eeprom->reg_chip_select) 631 reg |= AX_MEMR_EECS; 632 633 ei_outb(reg, ei_local->mem + AX_MEMR); 634 udelay(10); 635 } 636 #endif 637 638 static const struct net_device_ops ax_netdev_ops = { 639 .ndo_open = ax_open, 640 .ndo_stop = ax_close, 641 .ndo_do_ioctl = ax_ioctl, 642 643 .ndo_start_xmit = ax_ei_start_xmit, 644 .ndo_tx_timeout = ax_ei_tx_timeout, 645 .ndo_get_stats = ax_ei_get_stats, 646 .ndo_set_rx_mode = ax_ei_set_multicast_list, 647 .ndo_validate_addr = eth_validate_addr, 648 .ndo_set_mac_address = eth_mac_addr, 649 #ifdef CONFIG_NET_POLL_CONTROLLER 650 .ndo_poll_controller = ax_ei_poll, 651 #endif 652 }; 653 654 /* setup code */ 655 656 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 657 { 658 void __iomem *ioaddr = ei_local->mem; 659 struct ax_device *ax = to_ax_dev(dev); 660 661 /* Select page 0 */ 662 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 663 664 /* set to byte access */ 665 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 666 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 667 } 668 669 /* 670 * ax_init_dev 671 * 672 * initialise the specified device, taking care to note the MAC 673 * address it may already have (if configured), ensure 674 * the device is ready to be used by lib8390.c and registerd with 675 * the network layer. 676 */ 677 static int ax_init_dev(struct net_device *dev) 678 { 679 struct ei_device *ei_local = netdev_priv(dev); 680 struct ax_device *ax = to_ax_dev(dev); 681 void __iomem *ioaddr = ei_local->mem; 682 unsigned int start_page; 683 unsigned int stop_page; 684 int ret; 685 int i; 686 687 ret = ax_initial_check(dev); 688 if (ret) 689 goto err_out; 690 691 /* setup goes here */ 692 693 ax_initial_setup(dev, ei_local); 694 695 /* read the mac from the card prom if we need it */ 696 697 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 698 unsigned char SA_prom[32]; 699 700 ei_outb(6, ioaddr + EN0_RCNTLO); 701 ei_outb(0, ioaddr + EN0_RCNTHI); 702 ei_outb(0, ioaddr + EN0_RSARLO); 703 ei_outb(0, ioaddr + EN0_RSARHI); 704 ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD); 705 for (i = 0; i < sizeof(SA_prom); i += 2) { 706 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 707 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 708 } 709 ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */ 710 711 if (ax->plat->wordlength == 2) 712 for (i = 0; i < 16; i++) 713 SA_prom[i] = SA_prom[i+i]; 714 715 memcpy(dev->dev_addr, SA_prom, ETH_ALEN); 716 } 717 718 #ifdef CONFIG_AX88796_93CX6 719 if (ax->plat->flags & AXFLG_HAS_93CX6) { 720 unsigned char mac_addr[ETH_ALEN]; 721 struct eeprom_93cx6 eeprom; 722 723 eeprom.data = ei_local; 724 eeprom.register_read = ax_eeprom_register_read; 725 eeprom.register_write = ax_eeprom_register_write; 726 eeprom.width = PCI_EEPROM_WIDTH_93C56; 727 728 eeprom_93cx6_multiread(&eeprom, 0, 729 (__le16 __force *)mac_addr, 730 sizeof(mac_addr) >> 1); 731 732 memcpy(dev->dev_addr, mac_addr, ETH_ALEN); 733 } 734 #endif 735 if (ax->plat->wordlength == 2) { 736 /* We must set the 8390 for word mode. */ 737 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 738 start_page = NESM_START_PG; 739 stop_page = NESM_STOP_PG; 740 } else { 741 start_page = NE1SM_START_PG; 742 stop_page = NE1SM_STOP_PG; 743 } 744 745 /* load the mac-address from the device */ 746 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 747 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 748 ei_local->mem + E8390_CMD); /* 0x61 */ 749 for (i = 0; i < ETH_ALEN; i++) 750 dev->dev_addr[i] = 751 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 752 } 753 754 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 755 ax->plat->mac_addr) 756 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 757 758 if (!is_valid_ether_addr(dev->dev_addr)) { 759 eth_hw_addr_random(dev); 760 dev_info(&dev->dev, "Using random MAC address: %pM\n", 761 dev->dev_addr); 762 } 763 764 ax_reset_8390(dev); 765 766 ei_local->name = "AX88796"; 767 ei_local->tx_start_page = start_page; 768 ei_local->stop_page = stop_page; 769 ei_local->word16 = (ax->plat->wordlength == 2); 770 ei_local->rx_start_page = start_page + TX_PAGES; 771 772 #ifdef PACKETBUF_MEMSIZE 773 /* Allow the packet buffer size to be overridden by know-it-alls. */ 774 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 775 #endif 776 777 ei_local->reset_8390 = &ax_reset_8390; 778 if (ax->plat->block_input) 779 ei_local->block_input = ax->plat->block_input; 780 else 781 ei_local->block_input = &ax_block_input; 782 if (ax->plat->block_output) 783 ei_local->block_output = ax->plat->block_output; 784 else 785 ei_local->block_output = &ax_block_output; 786 ei_local->get_8390_hdr = &ax_get_8390_hdr; 787 ei_local->priv = 0; 788 789 dev->netdev_ops = &ax_netdev_ops; 790 dev->ethtool_ops = &ax_ethtool_ops; 791 792 ax_NS8390_init(dev, 0); 793 794 ret = register_netdev(dev); 795 if (ret) 796 goto err_out; 797 798 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 799 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 800 dev->dev_addr); 801 802 return 0; 803 804 err_out: 805 return ret; 806 } 807 808 static int ax_remove(struct platform_device *pdev) 809 { 810 struct net_device *dev = platform_get_drvdata(pdev); 811 struct ei_device *ei_local = netdev_priv(dev); 812 struct ax_device *ax = to_ax_dev(dev); 813 struct resource *mem; 814 815 unregister_netdev(dev); 816 817 iounmap(ei_local->mem); 818 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 819 release_mem_region(mem->start, resource_size(mem)); 820 821 if (ax->map2) { 822 iounmap(ax->map2); 823 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 824 release_mem_region(mem->start, resource_size(mem)); 825 } 826 827 platform_set_drvdata(pdev, NULL); 828 free_netdev(dev); 829 830 return 0; 831 } 832 833 /* 834 * ax_probe 835 * 836 * This is the entry point when the platform device system uses to 837 * notify us of a new device to attach to. Allocate memory, find the 838 * resources and information passed, and map the necessary registers. 839 */ 840 static int ax_probe(struct platform_device *pdev) 841 { 842 struct net_device *dev; 843 struct ei_device *ei_local; 844 struct ax_device *ax; 845 struct resource *irq, *mem, *mem2; 846 unsigned long mem_size, mem2_size = 0; 847 int ret = 0; 848 849 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 850 if (dev == NULL) 851 return -ENOMEM; 852 853 /* ok, let's setup our device */ 854 SET_NETDEV_DEV(dev, &pdev->dev); 855 ei_local = netdev_priv(dev); 856 ax = to_ax_dev(dev); 857 858 ax->plat = dev_get_platdata(&pdev->dev); 859 platform_set_drvdata(pdev, dev); 860 861 ei_local->rxcr_base = ax->plat->rcr_val; 862 863 /* find the platform resources */ 864 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 865 if (!irq) { 866 dev_err(&pdev->dev, "no IRQ specified\n"); 867 ret = -ENXIO; 868 goto exit_mem; 869 } 870 871 dev->irq = irq->start; 872 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 873 874 if (irq->flags & IORESOURCE_IRQ_SHAREABLE) 875 ax->irqflags |= IRQF_SHARED; 876 877 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 878 if (!mem) { 879 dev_err(&pdev->dev, "no MEM specified\n"); 880 ret = -ENXIO; 881 goto exit_mem; 882 } 883 884 mem_size = resource_size(mem); 885 886 /* 887 * setup the register offsets from either the platform data or 888 * by using the size of the resource provided 889 */ 890 if (ax->plat->reg_offsets) 891 ei_local->reg_offset = ax->plat->reg_offsets; 892 else { 893 ei_local->reg_offset = ax->reg_offsets; 894 for (ret = 0; ret < 0x18; ret++) 895 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 896 } 897 898 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 899 dev_err(&pdev->dev, "cannot reserve registers\n"); 900 ret = -ENXIO; 901 goto exit_mem; 902 } 903 904 ei_local->mem = ioremap(mem->start, mem_size); 905 dev->base_addr = (unsigned long)ei_local->mem; 906 907 if (ei_local->mem == NULL) { 908 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 909 910 ret = -ENXIO; 911 goto exit_req; 912 } 913 914 /* look for reset area */ 915 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 916 if (!mem2) { 917 if (!ax->plat->reg_offsets) { 918 for (ret = 0; ret < 0x20; ret++) 919 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 920 } 921 } else { 922 mem2_size = resource_size(mem2); 923 924 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 925 dev_err(&pdev->dev, "cannot reserve registers\n"); 926 ret = -ENXIO; 927 goto exit_mem1; 928 } 929 930 ax->map2 = ioremap(mem2->start, mem2_size); 931 if (!ax->map2) { 932 dev_err(&pdev->dev, "cannot map reset register\n"); 933 ret = -ENXIO; 934 goto exit_mem2; 935 } 936 937 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 938 } 939 940 /* got resources, now initialise and register device */ 941 ret = ax_init_dev(dev); 942 if (!ret) 943 return 0; 944 945 if (!ax->map2) 946 goto exit_mem1; 947 948 iounmap(ax->map2); 949 950 exit_mem2: 951 if (mem2) 952 release_mem_region(mem2->start, mem2_size); 953 954 exit_mem1: 955 iounmap(ei_local->mem); 956 957 exit_req: 958 release_mem_region(mem->start, mem_size); 959 960 exit_mem: 961 platform_set_drvdata(pdev, NULL); 962 free_netdev(dev); 963 964 return ret; 965 } 966 967 /* suspend and resume */ 968 969 #ifdef CONFIG_PM 970 static int ax_suspend(struct platform_device *dev, pm_message_t state) 971 { 972 struct net_device *ndev = platform_get_drvdata(dev); 973 struct ax_device *ax = to_ax_dev(ndev); 974 975 ax->resume_open = ax->running; 976 977 netif_device_detach(ndev); 978 ax_close(ndev); 979 980 return 0; 981 } 982 983 static int ax_resume(struct platform_device *pdev) 984 { 985 struct net_device *ndev = platform_get_drvdata(pdev); 986 struct ax_device *ax = to_ax_dev(ndev); 987 988 ax_initial_setup(ndev, netdev_priv(ndev)); 989 ax_NS8390_init(ndev, ax->resume_open); 990 netif_device_attach(ndev); 991 992 if (ax->resume_open) 993 ax_open(ndev); 994 995 return 0; 996 } 997 998 #else 999 #define ax_suspend NULL 1000 #define ax_resume NULL 1001 #endif 1002 1003 static struct platform_driver axdrv = { 1004 .driver = { 1005 .name = "ax88796", 1006 }, 1007 .probe = ax_probe, 1008 .remove = ax_remove, 1009 .suspend = ax_suspend, 1010 .resume = ax_resume, 1011 }; 1012 1013 module_platform_driver(axdrv); 1014 1015 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 1016 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 1017 MODULE_LICENSE("GPL v2"); 1018 MODULE_ALIAS("platform:ax88796"); 1019