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 /* mask with MAC supported features */ 381 phy_dev->supported &= PHY_BASIC_FEATURES; 382 phy_dev->advertising = phy_dev->supported; 383 384 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 385 phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq); 386 387 return 0; 388 } 389 390 static void ax_phy_switch(struct net_device *dev, int on) 391 { 392 struct ei_device *ei_local = netdev_priv(dev); 393 struct ax_device *ax = to_ax_dev(dev); 394 395 u8 reg_gpoc = ax->plat->gpoc_val; 396 397 if (!!on) 398 reg_gpoc &= ~AX_GPOC_PPDSET; 399 else 400 reg_gpoc |= AX_GPOC_PPDSET; 401 402 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 403 } 404 405 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 406 { 407 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 408 409 if (level) 410 ax->reg_memr |= AX_MEMR_MDC; 411 else 412 ax->reg_memr &= ~AX_MEMR_MDC; 413 414 ei_outb(ax->reg_memr, ax->addr_memr); 415 } 416 417 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 418 { 419 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 420 421 if (output) 422 ax->reg_memr &= ~AX_MEMR_MDIR; 423 else 424 ax->reg_memr |= AX_MEMR_MDIR; 425 426 ei_outb(ax->reg_memr, ax->addr_memr); 427 } 428 429 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 430 { 431 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 432 433 if (value) 434 ax->reg_memr |= AX_MEMR_MDO; 435 else 436 ax->reg_memr &= ~AX_MEMR_MDO; 437 438 ei_outb(ax->reg_memr, ax->addr_memr); 439 } 440 441 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 442 { 443 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 444 int reg_memr = ei_inb(ax->addr_memr); 445 446 return reg_memr & AX_MEMR_MDI ? 1 : 0; 447 } 448 449 static const struct mdiobb_ops bb_ops = { 450 .owner = THIS_MODULE, 451 .set_mdc = ax_bb_mdc, 452 .set_mdio_dir = ax_bb_dir, 453 .set_mdio_data = ax_bb_set_data, 454 .get_mdio_data = ax_bb_get_data, 455 }; 456 457 static int ax_mii_init(struct net_device *dev) 458 { 459 struct platform_device *pdev = to_platform_device(dev->dev.parent); 460 struct ei_device *ei_local = netdev_priv(dev); 461 struct ax_device *ax = to_ax_dev(dev); 462 int err; 463 464 ax->bb_ctrl.ops = &bb_ops; 465 ax->addr_memr = ei_local->mem + AX_MEMR; 466 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 467 if (!ax->mii_bus) { 468 err = -ENOMEM; 469 goto out; 470 } 471 472 ax->mii_bus->name = "ax88796_mii_bus"; 473 ax->mii_bus->parent = dev->dev.parent; 474 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 475 pdev->name, pdev->id); 476 477 err = mdiobus_register(ax->mii_bus); 478 if (err) 479 goto out_free_mdio_bitbang; 480 481 return 0; 482 483 out_free_mdio_bitbang: 484 free_mdio_bitbang(ax->mii_bus); 485 out: 486 return err; 487 } 488 489 static int ax_open(struct net_device *dev) 490 { 491 struct ax_device *ax = to_ax_dev(dev); 492 int ret; 493 494 netdev_dbg(dev, "open\n"); 495 496 ret = ax_mii_init(dev); 497 if (ret) 498 goto failed_mii; 499 500 if (ax->plat->check_irq) 501 ret = request_irq(dev->irq, ax_ei_interrupt_filtered, 502 ax->irqflags, dev->name, dev); 503 else 504 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 505 dev->name, dev); 506 if (ret) 507 goto failed_request_irq; 508 509 /* turn the phy on (if turned off) */ 510 ax_phy_switch(dev, 1); 511 512 ret = ax_mii_probe(dev); 513 if (ret) 514 goto failed_mii_probe; 515 phy_start(dev->phydev); 516 517 ret = ax_ei_open(dev); 518 if (ret) 519 goto failed_ax_ei_open; 520 521 ax->running = 1; 522 523 return 0; 524 525 failed_ax_ei_open: 526 phy_disconnect(dev->phydev); 527 failed_mii_probe: 528 ax_phy_switch(dev, 0); 529 free_irq(dev->irq, dev); 530 failed_request_irq: 531 /* unregister mdiobus */ 532 mdiobus_unregister(ax->mii_bus); 533 free_mdio_bitbang(ax->mii_bus); 534 failed_mii: 535 return ret; 536 } 537 538 static int ax_close(struct net_device *dev) 539 { 540 struct ax_device *ax = to_ax_dev(dev); 541 542 netdev_dbg(dev, "close\n"); 543 544 ax->running = 0; 545 wmb(); 546 547 ax_ei_close(dev); 548 549 /* turn the phy off */ 550 ax_phy_switch(dev, 0); 551 phy_disconnect(dev->phydev); 552 553 free_irq(dev->irq, dev); 554 555 mdiobus_unregister(ax->mii_bus); 556 free_mdio_bitbang(ax->mii_bus); 557 return 0; 558 } 559 560 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 561 { 562 struct phy_device *phy_dev = dev->phydev; 563 564 if (!netif_running(dev)) 565 return -EINVAL; 566 567 if (!phy_dev) 568 return -ENODEV; 569 570 return phy_mii_ioctl(phy_dev, req, cmd); 571 } 572 573 /* ethtool ops */ 574 575 static void ax_get_drvinfo(struct net_device *dev, 576 struct ethtool_drvinfo *info) 577 { 578 struct platform_device *pdev = to_platform_device(dev->dev.parent); 579 580 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 581 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 582 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); 583 } 584 585 static u32 ax_get_msglevel(struct net_device *dev) 586 { 587 struct ei_device *ei_local = netdev_priv(dev); 588 589 return ei_local->msg_enable; 590 } 591 592 static void ax_set_msglevel(struct net_device *dev, u32 v) 593 { 594 struct ei_device *ei_local = netdev_priv(dev); 595 596 ei_local->msg_enable = v; 597 } 598 599 static const struct ethtool_ops ax_ethtool_ops = { 600 .get_drvinfo = ax_get_drvinfo, 601 .get_link = ethtool_op_get_link, 602 .get_ts_info = ethtool_op_get_ts_info, 603 .get_msglevel = ax_get_msglevel, 604 .set_msglevel = ax_set_msglevel, 605 .get_link_ksettings = phy_ethtool_get_link_ksettings, 606 .set_link_ksettings = phy_ethtool_set_link_ksettings, 607 }; 608 609 #ifdef CONFIG_AX88796_93CX6 610 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 611 { 612 struct ei_device *ei_local = eeprom->data; 613 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 614 615 eeprom->reg_data_in = reg & AX_MEMR_EEI; 616 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 617 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 618 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 619 } 620 621 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 622 { 623 struct ei_device *ei_local = eeprom->data; 624 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 625 626 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 627 628 if (eeprom->reg_data_in) 629 reg |= AX_MEMR_EEI; 630 if (eeprom->reg_data_clock) 631 reg |= AX_MEMR_EECLK; 632 if (eeprom->reg_chip_select) 633 reg |= AX_MEMR_EECS; 634 635 ei_outb(reg, ei_local->mem + AX_MEMR); 636 udelay(10); 637 } 638 #endif 639 640 static const struct net_device_ops ax_netdev_ops = { 641 .ndo_open = ax_open, 642 .ndo_stop = ax_close, 643 .ndo_do_ioctl = ax_ioctl, 644 645 .ndo_start_xmit = ax_ei_start_xmit, 646 .ndo_tx_timeout = ax_ei_tx_timeout, 647 .ndo_get_stats = ax_ei_get_stats, 648 .ndo_set_rx_mode = ax_ei_set_multicast_list, 649 .ndo_validate_addr = eth_validate_addr, 650 .ndo_set_mac_address = eth_mac_addr, 651 #ifdef CONFIG_NET_POLL_CONTROLLER 652 .ndo_poll_controller = ax_ei_poll, 653 #endif 654 }; 655 656 /* setup code */ 657 658 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 659 { 660 void __iomem *ioaddr = ei_local->mem; 661 struct ax_device *ax = to_ax_dev(dev); 662 663 /* Select page 0 */ 664 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 665 666 /* set to byte access */ 667 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 668 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 669 } 670 671 /* 672 * ax_init_dev 673 * 674 * initialise the specified device, taking care to note the MAC 675 * address it may already have (if configured), ensure 676 * the device is ready to be used by lib8390.c and registerd with 677 * the network layer. 678 */ 679 static int ax_init_dev(struct net_device *dev) 680 { 681 struct ei_device *ei_local = netdev_priv(dev); 682 struct ax_device *ax = to_ax_dev(dev); 683 void __iomem *ioaddr = ei_local->mem; 684 unsigned int start_page; 685 unsigned int stop_page; 686 int ret; 687 int i; 688 689 ret = ax_initial_check(dev); 690 if (ret) 691 goto err_out; 692 693 /* setup goes here */ 694 695 ax_initial_setup(dev, ei_local); 696 697 /* read the mac from the card prom if we need it */ 698 699 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 700 unsigned char SA_prom[32]; 701 702 ei_outb(6, ioaddr + EN0_RCNTLO); 703 ei_outb(0, ioaddr + EN0_RCNTHI); 704 ei_outb(0, ioaddr + EN0_RSARLO); 705 ei_outb(0, ioaddr + EN0_RSARHI); 706 ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD); 707 for (i = 0; i < sizeof(SA_prom); i += 2) { 708 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 709 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 710 } 711 ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */ 712 713 if (ax->plat->wordlength == 2) 714 for (i = 0; i < 16; i++) 715 SA_prom[i] = SA_prom[i+i]; 716 717 memcpy(dev->dev_addr, SA_prom, ETH_ALEN); 718 } 719 720 #ifdef CONFIG_AX88796_93CX6 721 if (ax->plat->flags & AXFLG_HAS_93CX6) { 722 unsigned char mac_addr[ETH_ALEN]; 723 struct eeprom_93cx6 eeprom; 724 725 eeprom.data = ei_local; 726 eeprom.register_read = ax_eeprom_register_read; 727 eeprom.register_write = ax_eeprom_register_write; 728 eeprom.width = PCI_EEPROM_WIDTH_93C56; 729 730 eeprom_93cx6_multiread(&eeprom, 0, 731 (__le16 __force *)mac_addr, 732 sizeof(mac_addr) >> 1); 733 734 memcpy(dev->dev_addr, mac_addr, ETH_ALEN); 735 } 736 #endif 737 if (ax->plat->wordlength == 2) { 738 /* We must set the 8390 for word mode. */ 739 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 740 start_page = NESM_START_PG; 741 stop_page = NESM_STOP_PG; 742 } else { 743 start_page = NE1SM_START_PG; 744 stop_page = NE1SM_STOP_PG; 745 } 746 747 /* load the mac-address from the device */ 748 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 749 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 750 ei_local->mem + E8390_CMD); /* 0x61 */ 751 for (i = 0; i < ETH_ALEN; i++) 752 dev->dev_addr[i] = 753 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 754 } 755 756 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 757 ax->plat->mac_addr) 758 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 759 760 if (!is_valid_ether_addr(dev->dev_addr)) { 761 eth_hw_addr_random(dev); 762 dev_info(&dev->dev, "Using random MAC address: %pM\n", 763 dev->dev_addr); 764 } 765 766 ax_reset_8390(dev); 767 768 ei_local->name = "AX88796"; 769 ei_local->tx_start_page = start_page; 770 ei_local->stop_page = stop_page; 771 ei_local->word16 = (ax->plat->wordlength == 2); 772 ei_local->rx_start_page = start_page + TX_PAGES; 773 774 #ifdef PACKETBUF_MEMSIZE 775 /* Allow the packet buffer size to be overridden by know-it-alls. */ 776 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 777 #endif 778 779 ei_local->reset_8390 = &ax_reset_8390; 780 if (ax->plat->block_input) 781 ei_local->block_input = ax->plat->block_input; 782 else 783 ei_local->block_input = &ax_block_input; 784 if (ax->plat->block_output) 785 ei_local->block_output = ax->plat->block_output; 786 else 787 ei_local->block_output = &ax_block_output; 788 ei_local->get_8390_hdr = &ax_get_8390_hdr; 789 ei_local->priv = 0; 790 791 dev->netdev_ops = &ax_netdev_ops; 792 dev->ethtool_ops = &ax_ethtool_ops; 793 794 ax_NS8390_init(dev, 0); 795 796 ret = register_netdev(dev); 797 if (ret) 798 goto err_out; 799 800 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 801 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 802 dev->dev_addr); 803 804 return 0; 805 806 err_out: 807 return ret; 808 } 809 810 static int ax_remove(struct platform_device *pdev) 811 { 812 struct net_device *dev = platform_get_drvdata(pdev); 813 struct ei_device *ei_local = netdev_priv(dev); 814 struct ax_device *ax = to_ax_dev(dev); 815 struct resource *mem; 816 817 unregister_netdev(dev); 818 819 iounmap(ei_local->mem); 820 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 821 release_mem_region(mem->start, resource_size(mem)); 822 823 if (ax->map2) { 824 iounmap(ax->map2); 825 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 826 release_mem_region(mem->start, resource_size(mem)); 827 } 828 829 free_netdev(dev); 830 831 return 0; 832 } 833 834 /* 835 * ax_probe 836 * 837 * This is the entry point when the platform device system uses to 838 * notify us of a new device to attach to. Allocate memory, find the 839 * resources and information passed, and map the necessary registers. 840 */ 841 static int ax_probe(struct platform_device *pdev) 842 { 843 struct net_device *dev; 844 struct ei_device *ei_local; 845 struct ax_device *ax; 846 struct resource *irq, *mem, *mem2; 847 unsigned long mem_size, mem2_size = 0; 848 int ret = 0; 849 850 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 851 if (dev == NULL) 852 return -ENOMEM; 853 854 /* ok, let's setup our device */ 855 SET_NETDEV_DEV(dev, &pdev->dev); 856 ei_local = netdev_priv(dev); 857 ax = to_ax_dev(dev); 858 859 ax->plat = dev_get_platdata(&pdev->dev); 860 platform_set_drvdata(pdev, dev); 861 862 ei_local->rxcr_base = ax->plat->rcr_val; 863 864 /* find the platform resources */ 865 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 866 if (!irq) { 867 dev_err(&pdev->dev, "no IRQ specified\n"); 868 ret = -ENXIO; 869 goto exit_mem; 870 } 871 872 dev->irq = irq->start; 873 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 874 875 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 876 if (!mem) { 877 dev_err(&pdev->dev, "no MEM specified\n"); 878 ret = -ENXIO; 879 goto exit_mem; 880 } 881 882 mem_size = resource_size(mem); 883 884 /* 885 * setup the register offsets from either the platform data or 886 * by using the size of the resource provided 887 */ 888 if (ax->plat->reg_offsets) 889 ei_local->reg_offset = ax->plat->reg_offsets; 890 else { 891 ei_local->reg_offset = ax->reg_offsets; 892 for (ret = 0; ret < 0x18; ret++) 893 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 894 } 895 896 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 897 dev_err(&pdev->dev, "cannot reserve registers\n"); 898 ret = -ENXIO; 899 goto exit_mem; 900 } 901 902 ei_local->mem = ioremap(mem->start, mem_size); 903 dev->base_addr = (unsigned long)ei_local->mem; 904 905 if (ei_local->mem == NULL) { 906 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 907 908 ret = -ENXIO; 909 goto exit_req; 910 } 911 912 /* look for reset area */ 913 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 914 if (!mem2) { 915 if (!ax->plat->reg_offsets) { 916 for (ret = 0; ret < 0x20; ret++) 917 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 918 } 919 } else { 920 mem2_size = resource_size(mem2); 921 922 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 923 dev_err(&pdev->dev, "cannot reserve registers\n"); 924 ret = -ENXIO; 925 goto exit_mem1; 926 } 927 928 ax->map2 = ioremap(mem2->start, mem2_size); 929 if (!ax->map2) { 930 dev_err(&pdev->dev, "cannot map reset register\n"); 931 ret = -ENXIO; 932 goto exit_mem2; 933 } 934 935 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 936 } 937 938 /* got resources, now initialise and register device */ 939 ret = ax_init_dev(dev); 940 if (!ret) 941 return 0; 942 943 if (!ax->map2) 944 goto exit_mem1; 945 946 iounmap(ax->map2); 947 948 exit_mem2: 949 if (mem2) 950 release_mem_region(mem2->start, mem2_size); 951 952 exit_mem1: 953 iounmap(ei_local->mem); 954 955 exit_req: 956 release_mem_region(mem->start, mem_size); 957 958 exit_mem: 959 free_netdev(dev); 960 961 return ret; 962 } 963 964 /* suspend and resume */ 965 966 #ifdef CONFIG_PM 967 static int ax_suspend(struct platform_device *dev, pm_message_t state) 968 { 969 struct net_device *ndev = platform_get_drvdata(dev); 970 struct ax_device *ax = to_ax_dev(ndev); 971 972 ax->resume_open = ax->running; 973 974 netif_device_detach(ndev); 975 ax_close(ndev); 976 977 return 0; 978 } 979 980 static int ax_resume(struct platform_device *pdev) 981 { 982 struct net_device *ndev = platform_get_drvdata(pdev); 983 struct ax_device *ax = to_ax_dev(ndev); 984 985 ax_initial_setup(ndev, netdev_priv(ndev)); 986 ax_NS8390_init(ndev, ax->resume_open); 987 netif_device_attach(ndev); 988 989 if (ax->resume_open) 990 ax_open(ndev); 991 992 return 0; 993 } 994 995 #else 996 #define ax_suspend NULL 997 #define ax_resume NULL 998 #endif 999 1000 static struct platform_driver axdrv = { 1001 .driver = { 1002 .name = "ax88796", 1003 }, 1004 .probe = ax_probe, 1005 .remove = ax_remove, 1006 .suspend = ax_suspend, 1007 .resume = ax_resume, 1008 }; 1009 1010 module_platform_driver(axdrv); 1011 1012 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 1013 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 1014 MODULE_LICENSE("GPL v2"); 1015 MODULE_ALIAS("platform:ax88796"); 1016