1 /* drivers/net/ethernet/8390/ax88796.c 2 * 3 * Copyright 2005,2007 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * Asix AX88796 10/100 Ethernet controller support 7 * Based on ne.c, by Donald Becker, et-al. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/errno.h> 17 #include <linux/isapnp.h> 18 #include <linux/interrupt.h> 19 #include <linux/io.h> 20 #include <linux/platform_device.h> 21 #include <linux/delay.h> 22 #include <linux/timer.h> 23 #include <linux/netdevice.h> 24 #include <linux/etherdevice.h> 25 #include <linux/ethtool.h> 26 #include <linux/mdio-bitbang.h> 27 #include <linux/phy.h> 28 #include <linux/eeprom_93cx6.h> 29 #include <linux/slab.h> 30 31 #include <net/ax88796.h> 32 33 34 /* Rename the lib8390.c functions to show that they are in this driver */ 35 #define __ei_open ax_ei_open 36 #define __ei_close ax_ei_close 37 #define __ei_poll ax_ei_poll 38 #define __ei_start_xmit ax_ei_start_xmit 39 #define __ei_tx_timeout ax_ei_tx_timeout 40 #define __ei_get_stats ax_ei_get_stats 41 #define __ei_set_multicast_list ax_ei_set_multicast_list 42 #define __ei_interrupt ax_ei_interrupt 43 #define ____alloc_ei_netdev ax__alloc_ei_netdev 44 #define __NS8390_init ax_NS8390_init 45 46 /* force unsigned long back to 'void __iomem *' */ 47 #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 48 49 #define ei_inb(_a) readb(ax_convert_addr(_a)) 50 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 51 52 #define ei_inb_p(_a) ei_inb(_a) 53 #define ei_outb_p(_v, _a) ei_outb(_v, _a) 54 55 /* define EI_SHIFT() to take into account our register offsets */ 56 #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 57 58 /* Ensure we have our RCR base value */ 59 #define AX88796_PLATFORM 60 61 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 62 63 #include "lib8390.c" 64 65 #define DRV_NAME "ax88796" 66 #define DRV_VERSION "1.00" 67 68 /* from ne.c */ 69 #define NE_CMD EI_SHIFT(0x00) 70 #define NE_RESET EI_SHIFT(0x1f) 71 #define NE_DATAPORT EI_SHIFT(0x10) 72 73 #define NE1SM_START_PG 0x20 /* First page of TX buffer */ 74 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 75 #define NESM_START_PG 0x40 /* First page of TX buffer */ 76 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 77 78 #define AX_GPOC_PPDSET BIT(6) 79 80 static u32 ax_msg_enable; 81 82 /* device private data */ 83 84 struct ax_device { 85 struct mii_bus *mii_bus; 86 struct mdiobb_ctrl bb_ctrl; 87 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 whether 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 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); 152 153 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); 154 155 ei_local->txing = 0; 156 ei_local->dmaing = 0; 157 158 /* This check _should_not_ be necessary, omit eventually. */ 159 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { 160 if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) { 161 netdev_warn(dev, "%s: did not complete.\n", __func__); 162 break; 163 } 164 } 165 166 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ 167 } 168 169 170 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 171 int ring_page) 172 { 173 struct ei_device *ei_local = netdev_priv(dev); 174 void __iomem *nic_base = ei_local->mem; 175 176 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 177 if (ei_local->dmaing) { 178 netdev_err(dev, "DMAing conflict in %s " 179 "[DMAstat:%d][irqlock:%d].\n", 180 __func__, 181 ei_local->dmaing, ei_local->irqlock); 182 return; 183 } 184 185 ei_local->dmaing |= 0x01; 186 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 187 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 188 ei_outb(0, nic_base + EN0_RCNTHI); 189 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 190 ei_outb(ring_page, nic_base + EN0_RSARHI); 191 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 192 193 if (ei_local->word16) 194 ioread16_rep(nic_base + NE_DATAPORT, hdr, 195 sizeof(struct e8390_pkt_hdr) >> 1); 196 else 197 ioread8_rep(nic_base + NE_DATAPORT, hdr, 198 sizeof(struct e8390_pkt_hdr)); 199 200 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 201 ei_local->dmaing &= ~0x01; 202 203 le16_to_cpus(&hdr->count); 204 } 205 206 207 /* 208 * Block input and output, similar to the Crynwr packet driver. If 209 * you are porting to a new ethercard, look at the packet driver 210 * source for hints. The NEx000 doesn't share the on-board packet 211 * memory -- you have to put the packet out through the "remote DMA" 212 * dataport using ei_outb. 213 */ 214 static void ax_block_input(struct net_device *dev, int count, 215 struct sk_buff *skb, int ring_offset) 216 { 217 struct ei_device *ei_local = netdev_priv(dev); 218 void __iomem *nic_base = ei_local->mem; 219 char *buf = skb->data; 220 221 if (ei_local->dmaing) { 222 netdev_err(dev, 223 "DMAing conflict in %s " 224 "[DMAstat:%d][irqlock:%d].\n", 225 __func__, 226 ei_local->dmaing, ei_local->irqlock); 227 return; 228 } 229 230 ei_local->dmaing |= 0x01; 231 232 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 233 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 234 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 235 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 236 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 237 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 238 239 if (ei_local->word16) { 240 ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 241 if (count & 0x01) 242 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 243 244 } else { 245 ioread8_rep(nic_base + NE_DATAPORT, buf, count); 246 } 247 248 ei_local->dmaing &= ~1; 249 } 250 251 static void ax_block_output(struct net_device *dev, int count, 252 const unsigned char *buf, const int start_page) 253 { 254 struct ei_device *ei_local = netdev_priv(dev); 255 void __iomem *nic_base = ei_local->mem; 256 unsigned long dma_start; 257 258 /* 259 * Round the count up for word writes. Do we need to do this? 260 * What effect will an odd byte count have on the 8390? I 261 * should check someday. 262 */ 263 if (ei_local->word16 && (count & 0x01)) 264 count++; 265 266 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 267 if (ei_local->dmaing) { 268 netdev_err(dev, "DMAing conflict in %s." 269 "[DMAstat:%d][irqlock:%d]\n", 270 __func__, 271 ei_local->dmaing, ei_local->irqlock); 272 return; 273 } 274 275 ei_local->dmaing |= 0x01; 276 /* We should already be in page 0, but to be safe... */ 277 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 278 279 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 280 281 /* Now the normal output. */ 282 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 283 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 284 ei_outb(0x00, nic_base + EN0_RSARLO); 285 ei_outb(start_page, nic_base + EN0_RSARHI); 286 287 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 288 if (ei_local->word16) 289 iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 290 else 291 iowrite8_rep(nic_base + NE_DATAPORT, buf, count); 292 293 dma_start = jiffies; 294 295 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 296 if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ 297 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 298 ax_reset_8390(dev); 299 ax_NS8390_init(dev, 1); 300 break; 301 } 302 } 303 304 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 305 ei_local->dmaing &= ~0x01; 306 } 307 308 /* definitions for accessing MII/EEPROM interface */ 309 310 #define AX_MEMR EI_SHIFT(0x14) 311 #define AX_MEMR_MDC BIT(0) 312 #define AX_MEMR_MDIR BIT(1) 313 #define AX_MEMR_MDI BIT(2) 314 #define AX_MEMR_MDO BIT(3) 315 #define AX_MEMR_EECS BIT(4) 316 #define AX_MEMR_EEI BIT(5) 317 #define AX_MEMR_EEO BIT(6) 318 #define AX_MEMR_EECLK BIT(7) 319 320 static void ax_handle_link_change(struct net_device *dev) 321 { 322 struct ax_device *ax = to_ax_dev(dev); 323 struct phy_device *phy_dev = ax->phy_dev; 324 int status_change = 0; 325 326 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 327 (ax->duplex != phy_dev->duplex))) { 328 329 ax->speed = phy_dev->speed; 330 ax->duplex = phy_dev->duplex; 331 status_change = 1; 332 } 333 334 if (phy_dev->link != ax->link) { 335 if (!phy_dev->link) { 336 ax->speed = 0; 337 ax->duplex = -1; 338 } 339 ax->link = phy_dev->link; 340 341 status_change = 1; 342 } 343 344 if (status_change) 345 phy_print_status(phy_dev); 346 } 347 348 static int ax_mii_probe(struct net_device *dev) 349 { 350 struct ax_device *ax = to_ax_dev(dev); 351 struct phy_device *phy_dev = NULL; 352 int ret; 353 354 /* find the first phy */ 355 phy_dev = phy_find_first(ax->mii_bus); 356 if (!phy_dev) { 357 netdev_err(dev, "no PHY found\n"); 358 return -ENODEV; 359 } 360 361 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 362 PHY_INTERFACE_MODE_MII); 363 if (ret) { 364 netdev_err(dev, "Could not attach to PHY\n"); 365 return ret; 366 } 367 368 /* mask with MAC supported features */ 369 phy_dev->supported &= PHY_BASIC_FEATURES; 370 phy_dev->advertising = phy_dev->supported; 371 372 ax->phy_dev = phy_dev; 373 374 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 375 phy_dev->drv->name, dev_name(&phy_dev->dev), phy_dev->irq); 376 377 return 0; 378 } 379 380 static void ax_phy_switch(struct net_device *dev, int on) 381 { 382 struct ei_device *ei_local = netdev_priv(dev); 383 struct ax_device *ax = to_ax_dev(dev); 384 385 u8 reg_gpoc = ax->plat->gpoc_val; 386 387 if (!!on) 388 reg_gpoc &= ~AX_GPOC_PPDSET; 389 else 390 reg_gpoc |= AX_GPOC_PPDSET; 391 392 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 393 } 394 395 static int ax_open(struct net_device *dev) 396 { 397 struct ax_device *ax = to_ax_dev(dev); 398 int ret; 399 400 netdev_dbg(dev, "open\n"); 401 402 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 403 dev->name, dev); 404 if (ret) 405 goto failed_request_irq; 406 407 /* turn the phy on (if turned off) */ 408 ax_phy_switch(dev, 1); 409 410 ret = ax_mii_probe(dev); 411 if (ret) 412 goto failed_mii_probe; 413 phy_start(ax->phy_dev); 414 415 ret = ax_ei_open(dev); 416 if (ret) 417 goto failed_ax_ei_open; 418 419 ax->running = 1; 420 421 return 0; 422 423 failed_ax_ei_open: 424 phy_disconnect(ax->phy_dev); 425 failed_mii_probe: 426 ax_phy_switch(dev, 0); 427 free_irq(dev->irq, dev); 428 failed_request_irq: 429 return ret; 430 } 431 432 static int ax_close(struct net_device *dev) 433 { 434 struct ax_device *ax = to_ax_dev(dev); 435 436 netdev_dbg(dev, "close\n"); 437 438 ax->running = 0; 439 wmb(); 440 441 ax_ei_close(dev); 442 443 /* turn the phy off */ 444 ax_phy_switch(dev, 0); 445 phy_disconnect(ax->phy_dev); 446 447 free_irq(dev->irq, dev); 448 return 0; 449 } 450 451 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 452 { 453 struct ax_device *ax = to_ax_dev(dev); 454 struct phy_device *phy_dev = ax->phy_dev; 455 456 if (!netif_running(dev)) 457 return -EINVAL; 458 459 if (!phy_dev) 460 return -ENODEV; 461 462 return phy_mii_ioctl(phy_dev, req, cmd); 463 } 464 465 /* ethtool ops */ 466 467 static void ax_get_drvinfo(struct net_device *dev, 468 struct ethtool_drvinfo *info) 469 { 470 struct platform_device *pdev = to_platform_device(dev->dev.parent); 471 472 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 473 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 474 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); 475 } 476 477 static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) 478 { 479 struct ax_device *ax = to_ax_dev(dev); 480 struct phy_device *phy_dev = ax->phy_dev; 481 482 if (!phy_dev) 483 return -ENODEV; 484 485 return phy_ethtool_gset(phy_dev, cmd); 486 } 487 488 static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) 489 { 490 struct ax_device *ax = to_ax_dev(dev); 491 struct phy_device *phy_dev = ax->phy_dev; 492 493 if (!phy_dev) 494 return -ENODEV; 495 496 return phy_ethtool_sset(phy_dev, cmd); 497 } 498 499 static u32 ax_get_msglevel(struct net_device *dev) 500 { 501 struct ei_device *ei_local = netdev_priv(dev); 502 503 return ei_local->msg_enable; 504 } 505 506 static void ax_set_msglevel(struct net_device *dev, u32 v) 507 { 508 struct ei_device *ei_local = netdev_priv(dev); 509 510 ei_local->msg_enable = v; 511 } 512 513 static const struct ethtool_ops ax_ethtool_ops = { 514 .get_drvinfo = ax_get_drvinfo, 515 .get_settings = ax_get_settings, 516 .set_settings = ax_set_settings, 517 .get_link = ethtool_op_get_link, 518 .get_ts_info = ethtool_op_get_ts_info, 519 .get_msglevel = ax_get_msglevel, 520 .set_msglevel = ax_set_msglevel, 521 }; 522 523 #ifdef CONFIG_AX88796_93CX6 524 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 525 { 526 struct ei_device *ei_local = eeprom->data; 527 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 528 529 eeprom->reg_data_in = reg & AX_MEMR_EEI; 530 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 531 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 532 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 533 } 534 535 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 536 { 537 struct ei_device *ei_local = eeprom->data; 538 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 539 540 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 541 542 if (eeprom->reg_data_in) 543 reg |= AX_MEMR_EEI; 544 if (eeprom->reg_data_clock) 545 reg |= AX_MEMR_EECLK; 546 if (eeprom->reg_chip_select) 547 reg |= AX_MEMR_EECS; 548 549 ei_outb(reg, ei_local->mem + AX_MEMR); 550 udelay(10); 551 } 552 #endif 553 554 static const struct net_device_ops ax_netdev_ops = { 555 .ndo_open = ax_open, 556 .ndo_stop = ax_close, 557 .ndo_do_ioctl = ax_ioctl, 558 559 .ndo_start_xmit = ax_ei_start_xmit, 560 .ndo_tx_timeout = ax_ei_tx_timeout, 561 .ndo_get_stats = ax_ei_get_stats, 562 .ndo_set_rx_mode = ax_ei_set_multicast_list, 563 .ndo_validate_addr = eth_validate_addr, 564 .ndo_set_mac_address = eth_mac_addr, 565 .ndo_change_mtu = eth_change_mtu, 566 #ifdef CONFIG_NET_POLL_CONTROLLER 567 .ndo_poll_controller = ax_ei_poll, 568 #endif 569 }; 570 571 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 572 { 573 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 574 575 if (level) 576 ax->reg_memr |= AX_MEMR_MDC; 577 else 578 ax->reg_memr &= ~AX_MEMR_MDC; 579 580 ei_outb(ax->reg_memr, ax->addr_memr); 581 } 582 583 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 584 { 585 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 586 587 if (output) 588 ax->reg_memr &= ~AX_MEMR_MDIR; 589 else 590 ax->reg_memr |= AX_MEMR_MDIR; 591 592 ei_outb(ax->reg_memr, ax->addr_memr); 593 } 594 595 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 596 { 597 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 598 599 if (value) 600 ax->reg_memr |= AX_MEMR_MDO; 601 else 602 ax->reg_memr &= ~AX_MEMR_MDO; 603 604 ei_outb(ax->reg_memr, ax->addr_memr); 605 } 606 607 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 608 { 609 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 610 int reg_memr = ei_inb(ax->addr_memr); 611 612 return reg_memr & AX_MEMR_MDI ? 1 : 0; 613 } 614 615 static struct mdiobb_ops bb_ops = { 616 .owner = THIS_MODULE, 617 .set_mdc = ax_bb_mdc, 618 .set_mdio_dir = ax_bb_dir, 619 .set_mdio_data = ax_bb_set_data, 620 .get_mdio_data = ax_bb_get_data, 621 }; 622 623 /* setup code */ 624 625 static int ax_mii_init(struct net_device *dev) 626 { 627 struct platform_device *pdev = to_platform_device(dev->dev.parent); 628 struct ei_device *ei_local = netdev_priv(dev); 629 struct ax_device *ax = to_ax_dev(dev); 630 int err, i; 631 632 ax->bb_ctrl.ops = &bb_ops; 633 ax->addr_memr = ei_local->mem + AX_MEMR; 634 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 635 if (!ax->mii_bus) { 636 err = -ENOMEM; 637 goto out; 638 } 639 640 ax->mii_bus->name = "ax88796_mii_bus"; 641 ax->mii_bus->parent = dev->dev.parent; 642 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 643 pdev->name, pdev->id); 644 645 ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); 646 if (!ax->mii_bus->irq) { 647 err = -ENOMEM; 648 goto out_free_mdio_bitbang; 649 } 650 651 for (i = 0; i < PHY_MAX_ADDR; i++) 652 ax->mii_bus->irq[i] = PHY_POLL; 653 654 err = mdiobus_register(ax->mii_bus); 655 if (err) 656 goto out_free_irq; 657 658 return 0; 659 660 out_free_irq: 661 kfree(ax->mii_bus->irq); 662 out_free_mdio_bitbang: 663 free_mdio_bitbang(ax->mii_bus); 664 out: 665 return err; 666 } 667 668 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 669 { 670 void __iomem *ioaddr = ei_local->mem; 671 struct ax_device *ax = to_ax_dev(dev); 672 673 /* Select page 0 */ 674 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 675 676 /* set to byte access */ 677 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 678 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 679 } 680 681 /* 682 * ax_init_dev 683 * 684 * initialise the specified device, taking care to note the MAC 685 * address it may already have (if configured), ensure 686 * the device is ready to be used by lib8390.c and registerd with 687 * the network layer. 688 */ 689 static int ax_init_dev(struct net_device *dev) 690 { 691 struct ei_device *ei_local = netdev_priv(dev); 692 struct ax_device *ax = to_ax_dev(dev); 693 void __iomem *ioaddr = ei_local->mem; 694 unsigned int start_page; 695 unsigned int stop_page; 696 int ret; 697 int i; 698 699 ret = ax_initial_check(dev); 700 if (ret) 701 goto err_out; 702 703 /* setup goes here */ 704 705 ax_initial_setup(dev, ei_local); 706 707 /* read the mac from the card prom if we need it */ 708 709 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 710 unsigned char SA_prom[32]; 711 712 for (i = 0; i < sizeof(SA_prom); i += 2) { 713 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 714 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 715 } 716 717 if (ax->plat->wordlength == 2) 718 for (i = 0; i < 16; i++) 719 SA_prom[i] = SA_prom[i+i]; 720 721 memcpy(dev->dev_addr, SA_prom, ETH_ALEN); 722 } 723 724 #ifdef CONFIG_AX88796_93CX6 725 if (ax->plat->flags & AXFLG_HAS_93CX6) { 726 unsigned char mac_addr[ETH_ALEN]; 727 struct eeprom_93cx6 eeprom; 728 729 eeprom.data = ei_local; 730 eeprom.register_read = ax_eeprom_register_read; 731 eeprom.register_write = ax_eeprom_register_write; 732 eeprom.width = PCI_EEPROM_WIDTH_93C56; 733 734 eeprom_93cx6_multiread(&eeprom, 0, 735 (__le16 __force *)mac_addr, 736 sizeof(mac_addr) >> 1); 737 738 memcpy(dev->dev_addr, mac_addr, ETH_ALEN); 739 } 740 #endif 741 if (ax->plat->wordlength == 2) { 742 /* We must set the 8390 for word mode. */ 743 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 744 start_page = NESM_START_PG; 745 stop_page = NESM_STOP_PG; 746 } else { 747 start_page = NE1SM_START_PG; 748 stop_page = NE1SM_STOP_PG; 749 } 750 751 /* load the mac-address from the device */ 752 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 753 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 754 ei_local->mem + E8390_CMD); /* 0x61 */ 755 for (i = 0; i < ETH_ALEN; i++) 756 dev->dev_addr[i] = 757 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 758 } 759 760 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 761 ax->plat->mac_addr) 762 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 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 ei_local->block_input = &ax_block_input; 779 ei_local->block_output = &ax_block_output; 780 ei_local->get_8390_hdr = &ax_get_8390_hdr; 781 ei_local->priv = 0; 782 ei_local->msg_enable = ax_msg_enable; 783 784 dev->netdev_ops = &ax_netdev_ops; 785 dev->ethtool_ops = &ax_ethtool_ops; 786 787 ret = ax_mii_init(dev); 788 if (ret) 789 goto out_irq; 790 791 ax_NS8390_init(dev, 0); 792 793 ret = register_netdev(dev); 794 if (ret) 795 goto out_irq; 796 797 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 798 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 799 dev->dev_addr); 800 801 return 0; 802 803 out_irq: 804 /* cleanup irq */ 805 free_irq(dev->irq, dev); 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 free_irq(dev->irq, dev); 819 820 iounmap(ei_local->mem); 821 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 822 release_mem_region(mem->start, resource_size(mem)); 823 824 if (ax->map2) { 825 iounmap(ax->map2); 826 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 827 release_mem_region(mem->start, resource_size(mem)); 828 } 829 830 free_netdev(dev); 831 832 return 0; 833 } 834 835 /* 836 * ax_probe 837 * 838 * This is the entry point when the platform device system uses to 839 * notify us of a new device to attach to. Allocate memory, find the 840 * resources and information passed, and map the necessary registers. 841 */ 842 static int ax_probe(struct platform_device *pdev) 843 { 844 struct net_device *dev; 845 struct ei_device *ei_local; 846 struct ax_device *ax; 847 struct resource *irq, *mem, *mem2; 848 unsigned long mem_size, mem2_size = 0; 849 int ret = 0; 850 851 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 852 if (dev == NULL) 853 return -ENOMEM; 854 855 /* ok, let's setup our device */ 856 SET_NETDEV_DEV(dev, &pdev->dev); 857 ei_local = netdev_priv(dev); 858 ax = to_ax_dev(dev); 859 860 ax->plat = dev_get_platdata(&pdev->dev); 861 platform_set_drvdata(pdev, dev); 862 863 ei_local->rxcr_base = ax->plat->rcr_val; 864 865 /* find the platform resources */ 866 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 867 if (!irq) { 868 dev_err(&pdev->dev, "no IRQ specified\n"); 869 ret = -ENXIO; 870 goto exit_mem; 871 } 872 873 dev->irq = irq->start; 874 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 875 876 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 877 if (!mem) { 878 dev_err(&pdev->dev, "no MEM specified\n"); 879 ret = -ENXIO; 880 goto exit_mem; 881 } 882 883 mem_size = resource_size(mem); 884 885 /* 886 * setup the register offsets from either the platform data or 887 * by using the size of the resource provided 888 */ 889 if (ax->plat->reg_offsets) 890 ei_local->reg_offset = ax->plat->reg_offsets; 891 else { 892 ei_local->reg_offset = ax->reg_offsets; 893 for (ret = 0; ret < 0x18; ret++) 894 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 895 } 896 897 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 898 dev_err(&pdev->dev, "cannot reserve registers\n"); 899 ret = -ENXIO; 900 goto exit_mem; 901 } 902 903 ei_local->mem = ioremap(mem->start, mem_size); 904 dev->base_addr = (unsigned long)ei_local->mem; 905 906 if (ei_local->mem == NULL) { 907 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 908 909 ret = -ENXIO; 910 goto exit_req; 911 } 912 913 /* look for reset area */ 914 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 915 if (!mem2) { 916 if (!ax->plat->reg_offsets) { 917 for (ret = 0; ret < 0x20; ret++) 918 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 919 } 920 } else { 921 mem2_size = resource_size(mem2); 922 923 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 924 dev_err(&pdev->dev, "cannot reserve registers\n"); 925 ret = -ENXIO; 926 goto exit_mem1; 927 } 928 929 ax->map2 = ioremap(mem2->start, mem2_size); 930 if (!ax->map2) { 931 dev_err(&pdev->dev, "cannot map reset register\n"); 932 ret = -ENXIO; 933 goto exit_mem2; 934 } 935 936 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 937 } 938 939 /* got resources, now initialise and register device */ 940 ret = ax_init_dev(dev); 941 if (!ret) 942 return 0; 943 944 if (!ax->map2) 945 goto exit_mem1; 946 947 iounmap(ax->map2); 948 949 exit_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 .owner = THIS_MODULE, 1004 }, 1005 .probe = ax_probe, 1006 .remove = ax_remove, 1007 .suspend = ax_suspend, 1008 .resume = ax_resume, 1009 }; 1010 1011 module_platform_driver(axdrv); 1012 1013 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 1014 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 1015 MODULE_LICENSE("GPL v2"); 1016 MODULE_ALIAS("platform:ax88796"); 1017