ax88796.c revision f9a8f83b04e0c362a2fc660dbad980d24af209fc
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 35/* Rename the lib8390.c functions to show that they are in this driver */ 36#define __ei_open ax_ei_open 37#define __ei_close ax_ei_close 38#define __ei_poll ax_ei_poll 39#define __ei_start_xmit ax_ei_start_xmit 40#define __ei_tx_timeout ax_ei_tx_timeout 41#define __ei_get_stats ax_ei_get_stats 42#define __ei_set_multicast_list ax_ei_set_multicast_list 43#define __ei_interrupt ax_ei_interrupt 44#define ____alloc_ei_netdev ax__alloc_ei_netdev 45#define __NS8390_init ax_NS8390_init 46 47/* force unsigned long back to 'void __iomem *' */ 48#define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 49 50#define ei_inb(_a) readb(ax_convert_addr(_a)) 51#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 52 53#define ei_inb_p(_a) ei_inb(_a) 54#define ei_outb_p(_v, _a) ei_outb(_v, _a) 55 56/* define EI_SHIFT() to take into account our register offsets */ 57#define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 58 59/* Ensure we have our RCR base value */ 60#define AX88796_PLATFORM 61 62static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 63 64#include "lib8390.c" 65 66#define DRV_NAME "ax88796" 67#define DRV_VERSION "1.00" 68 69/* from ne.c */ 70#define NE_CMD EI_SHIFT(0x00) 71#define NE_RESET EI_SHIFT(0x1f) 72#define NE_DATAPORT EI_SHIFT(0x10) 73 74#define NE1SM_START_PG 0x20 /* First page of TX buffer */ 75#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 76#define NESM_START_PG 0x40 /* First page of TX buffer */ 77#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 78 79#define AX_GPOC_PPDSET BIT(6) 80 81/* device private data */ 82 83struct ax_device { 84 struct mii_bus *mii_bus; 85 struct mdiobb_ctrl bb_ctrl; 86 struct phy_device *phy_dev; 87 void __iomem *addr_memr; 88 u8 reg_memr; 89 int link; 90 int speed; 91 int duplex; 92 93 void __iomem *map2; 94 const struct ax_plat_data *plat; 95 96 unsigned char running; 97 unsigned char resume_open; 98 unsigned int irqflags; 99 100 u32 reg_offsets[0x20]; 101}; 102 103static inline struct ax_device *to_ax_dev(struct net_device *dev) 104{ 105 struct ei_device *ei_local = netdev_priv(dev); 106 return (struct ax_device *)(ei_local + 1); 107} 108 109/* 110 * ax_initial_check 111 * 112 * do an initial probe for the card to check whether it exists 113 * and is functional 114 */ 115static int ax_initial_check(struct net_device *dev) 116{ 117 struct ei_device *ei_local = netdev_priv(dev); 118 void __iomem *ioaddr = ei_local->mem; 119 int reg0; 120 int regd; 121 122 reg0 = ei_inb(ioaddr); 123 if (reg0 == 0xFF) 124 return -ENODEV; 125 126 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 127 regd = ei_inb(ioaddr + 0x0d); 128 ei_outb(0xff, ioaddr + 0x0d); 129 ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 130 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 131 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { 132 ei_outb(reg0, ioaddr); 133 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ 134 return -ENODEV; 135 } 136 137 return 0; 138} 139 140/* 141 * Hard reset the card. This used to pause for the same period that a 142 * 8390 reset command required, but that shouldn't be necessary. 143 */ 144static void ax_reset_8390(struct net_device *dev) 145{ 146 struct ei_device *ei_local = netdev_priv(dev); 147 unsigned long reset_start_time = jiffies; 148 void __iomem *addr = (void __iomem *)dev->base_addr; 149 150 if (ei_debug > 1) 151 netdev_dbg(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 (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 170static 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 */ 214static 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 251static 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 (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 320static 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 348static 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 380static 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 395static 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 432static 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 451static 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 467static 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 477static 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 488static 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 499static const struct ethtool_ops ax_ethtool_ops = { 500 .get_drvinfo = ax_get_drvinfo, 501 .get_settings = ax_get_settings, 502 .set_settings = ax_set_settings, 503 .get_link = ethtool_op_get_link, 504 .get_ts_info = ethtool_op_get_ts_info, 505}; 506 507#ifdef CONFIG_AX88796_93CX6 508static 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 519static 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 538static 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 555static 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 567static 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 579static 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 591static 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 599static 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 609static 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 652static 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 */ 673static 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 793static 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 */ 825static 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 950static 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 963static 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 983static 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 994module_platform_driver(axdrv); 995 996MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 997MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 998MODULE_LICENSE("GPL v2"); 999MODULE_ALIAS("platform:ax88796"); 1000