ax88796.c revision db62f684deeb291ab2533b99843d5df9a36b1f19
1/* drivers/net/ax88796.c 2 * 3 * Copyright 2005,2007 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * Asix AX88796 10/100 Ethernet controller support 7 * Based on ne.c, by Donald Becker, et-al. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14#include <linux/module.h> 15#include <linux/kernel.h> 16#include <linux/errno.h> 17#include <linux/isapnp.h> 18#include <linux/init.h> 19#include <linux/interrupt.h> 20#include <linux/io.h> 21#include <linux/platform_device.h> 22#include <linux/delay.h> 23#include <linux/timer.h> 24#include <linux/netdevice.h> 25#include <linux/etherdevice.h> 26#include <linux/ethtool.h> 27#include <linux/mdio-bitbang.h> 28#include <linux/phy.h> 29#include <linux/eeprom_93cx6.h> 30#include <linux/slab.h> 31 32#include <net/ax88796.h> 33 34#include <asm/system.h> 35 36/* Rename the lib8390.c functions to show that they are in this driver */ 37#define __ei_open ax_ei_open 38#define __ei_close ax_ei_close 39#define __ei_poll ax_ei_poll 40#define __ei_start_xmit ax_ei_start_xmit 41#define __ei_tx_timeout ax_ei_tx_timeout 42#define __ei_get_stats ax_ei_get_stats 43#define __ei_set_multicast_list ax_ei_set_multicast_list 44#define __ei_interrupt ax_ei_interrupt 45#define ____alloc_ei_netdev ax__alloc_ei_netdev 46#define __NS8390_init ax_NS8390_init 47 48/* force unsigned long back to 'void __iomem *' */ 49#define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 50 51#define ei_inb(_a) readb(ax_convert_addr(_a)) 52#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 53 54#define ei_inb_p(_a) ei_inb(_a) 55#define ei_outb_p(_v, _a) ei_outb(_v, _a) 56 57/* define EI_SHIFT() to take into account our register offsets */ 58#define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 59 60/* Ensure we have our RCR base value */ 61#define AX88796_PLATFORM 62 63static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 64 65#include "lib8390.c" 66 67#define DRV_NAME "ax88796" 68#define DRV_VERSION "1.00" 69 70/* from ne.c */ 71#define NE_CMD EI_SHIFT(0x00) 72#define NE_RESET EI_SHIFT(0x1f) 73#define NE_DATAPORT EI_SHIFT(0x10) 74 75#define NE1SM_START_PG 0x20 /* First page of TX buffer */ 76#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 77#define NESM_START_PG 0x40 /* First page of TX buffer */ 78#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 79 80#define AX_GPOC_PPDSET BIT(6) 81 82/* device private data */ 83 84struct 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 104static inline struct ax_device *to_ax_dev(struct net_device *dev) 105{ 106 struct ei_device *ei_local = netdev_priv(dev); 107 return (struct ax_device *)(ei_local + 1); 108} 109 110/* 111 * ax_initial_check 112 * 113 * do an initial probe for the card to check wether it exists 114 * and is functional 115 */ 116static 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 */ 145static void ax_reset_8390(struct net_device *dev) 146{ 147 struct ei_device *ei_local = netdev_priv(dev); 148 unsigned long reset_start_time = jiffies; 149 void __iomem *addr = (void __iomem *)dev->base_addr; 150 151 if (ei_debug > 1) 152 netdev_dbg(dev, "resetting the 8390 t=%ld\n", jiffies); 153 154 ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); 155 156 ei_local->txing = 0; 157 ei_local->dmaing = 0; 158 159 /* This check _should_not_ be necessary, omit eventually. */ 160 while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { 161 if (jiffies - reset_start_time > 2 * HZ / 100) { 162 netdev_warn(dev, "%s: did not complete.\n", __func__); 163 break; 164 } 165 } 166 167 ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ 168} 169 170 171static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 172 int ring_page) 173{ 174 struct ei_device *ei_local = netdev_priv(dev); 175 void __iomem *nic_base = ei_local->mem; 176 177 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 178 if (ei_local->dmaing) { 179 netdev_err(dev, "DMAing conflict in %s " 180 "[DMAstat:%d][irqlock:%d].\n", 181 __func__, 182 ei_local->dmaing, ei_local->irqlock); 183 return; 184 } 185 186 ei_local->dmaing |= 0x01; 187 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 188 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 189 ei_outb(0, nic_base + EN0_RCNTHI); 190 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 191 ei_outb(ring_page, nic_base + EN0_RSARHI); 192 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 193 194 if (ei_local->word16) 195 readsw(nic_base + NE_DATAPORT, hdr, 196 sizeof(struct e8390_pkt_hdr) >> 1); 197 else 198 readsb(nic_base + NE_DATAPORT, hdr, 199 sizeof(struct e8390_pkt_hdr)); 200 201 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 202 ei_local->dmaing &= ~0x01; 203 204 le16_to_cpus(&hdr->count); 205} 206 207 208/* 209 * Block input and output, similar to the Crynwr packet driver. If 210 * you are porting to a new ethercard, look at the packet driver 211 * source for hints. The NEx000 doesn't share the on-board packet 212 * memory -- you have to put the packet out through the "remote DMA" 213 * dataport using ei_outb. 214 */ 215static void ax_block_input(struct net_device *dev, int count, 216 struct sk_buff *skb, int ring_offset) 217{ 218 struct ei_device *ei_local = netdev_priv(dev); 219 void __iomem *nic_base = ei_local->mem; 220 char *buf = skb->data; 221 222 if (ei_local->dmaing) { 223 netdev_err(dev, 224 "DMAing conflict in %s " 225 "[DMAstat:%d][irqlock:%d].\n", 226 __func__, 227 ei_local->dmaing, ei_local->irqlock); 228 return; 229 } 230 231 ei_local->dmaing |= 0x01; 232 233 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 234 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 235 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 236 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 237 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 238 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 239 240 if (ei_local->word16) { 241 readsw(nic_base + NE_DATAPORT, buf, count >> 1); 242 if (count & 0x01) 243 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 244 245 } else { 246 readsb(nic_base + NE_DATAPORT, buf, count); 247 } 248 249 ei_local->dmaing &= ~1; 250} 251 252static void ax_block_output(struct net_device *dev, int count, 253 const unsigned char *buf, const int start_page) 254{ 255 struct ei_device *ei_local = netdev_priv(dev); 256 void __iomem *nic_base = ei_local->mem; 257 unsigned long dma_start; 258 259 /* 260 * Round the count up for word writes. Do we need to do this? 261 * What effect will an odd byte count have on the 8390? I 262 * should check someday. 263 */ 264 if (ei_local->word16 && (count & 0x01)) 265 count++; 266 267 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 268 if (ei_local->dmaing) { 269 netdev_err(dev, "DMAing conflict in %s." 270 "[DMAstat:%d][irqlock:%d]\n", 271 __func__, 272 ei_local->dmaing, ei_local->irqlock); 273 return; 274 } 275 276 ei_local->dmaing |= 0x01; 277 /* We should already be in page 0, but to be safe... */ 278 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 279 280 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 281 282 /* Now the normal output. */ 283 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 284 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 285 ei_outb(0x00, nic_base + EN0_RSARLO); 286 ei_outb(start_page, nic_base + EN0_RSARHI); 287 288 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 289 if (ei_local->word16) 290 writesw(nic_base + NE_DATAPORT, buf, count >> 1); 291 else 292 writesb(nic_base + NE_DATAPORT, buf, count); 293 294 dma_start = jiffies; 295 296 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 297 if (jiffies - dma_start > 2 * HZ / 100) { /* 20ms */ 298 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 299 ax_reset_8390(dev); 300 ax_NS8390_init(dev, 1); 301 break; 302 } 303 } 304 305 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 306 ei_local->dmaing &= ~0x01; 307} 308 309/* definitions for accessing MII/EEPROM interface */ 310 311#define AX_MEMR EI_SHIFT(0x14) 312#define AX_MEMR_MDC BIT(0) 313#define AX_MEMR_MDIR BIT(1) 314#define AX_MEMR_MDI BIT(2) 315#define AX_MEMR_MDO BIT(3) 316#define AX_MEMR_EECS BIT(4) 317#define AX_MEMR_EEI BIT(5) 318#define AX_MEMR_EEO BIT(6) 319#define AX_MEMR_EECLK BIT(7) 320 321static void ax_handle_link_change(struct net_device *dev) 322{ 323 struct ax_device *ax = to_ax_dev(dev); 324 struct phy_device *phy_dev = ax->phy_dev; 325 int status_change = 0; 326 327 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 328 (ax->duplex != phy_dev->duplex))) { 329 330 ax->speed = phy_dev->speed; 331 ax->duplex = phy_dev->duplex; 332 status_change = 1; 333 } 334 335 if (phy_dev->link != ax->link) { 336 if (!phy_dev->link) { 337 ax->speed = 0; 338 ax->duplex = -1; 339 } 340 ax->link = phy_dev->link; 341 342 status_change = 1; 343 } 344 345 if (status_change) 346 phy_print_status(phy_dev); 347} 348 349static int ax_mii_probe(struct net_device *dev) 350{ 351 struct ax_device *ax = to_ax_dev(dev); 352 struct phy_device *phy_dev = NULL; 353 int ret; 354 355 /* find the first phy */ 356 phy_dev = phy_find_first(ax->mii_bus); 357 if (!phy_dev) { 358 netdev_err(dev, "no PHY found\n"); 359 return -ENODEV; 360 } 361 362 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 0, 363 PHY_INTERFACE_MODE_MII); 364 if (ret) { 365 netdev_err(dev, "Could not attach to PHY\n"); 366 return ret; 367 } 368 369 /* mask with MAC supported features */ 370 phy_dev->supported &= PHY_BASIC_FEATURES; 371 phy_dev->advertising = phy_dev->supported; 372 373 ax->phy_dev = phy_dev; 374 375 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 376 phy_dev->drv->name, dev_name(&phy_dev->dev), phy_dev->irq); 377 378 return 0; 379} 380 381static void ax_phy_switch(struct net_device *dev, int on) 382{ 383 struct ei_device *ei_local = netdev_priv(dev); 384 struct ax_device *ax = to_ax_dev(dev); 385 386 u8 reg_gpoc = ax->plat->gpoc_val; 387 388 if (!!on) 389 reg_gpoc &= ~AX_GPOC_PPDSET; 390 else 391 reg_gpoc |= AX_GPOC_PPDSET; 392 393 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 394} 395 396static int ax_open(struct net_device *dev) 397{ 398 struct ax_device *ax = to_ax_dev(dev); 399 int ret; 400 401 netdev_dbg(dev, "open\n"); 402 403 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 404 dev->name, dev); 405 if (ret) 406 goto failed_request_irq; 407 408 /* turn the phy on (if turned off) */ 409 ax_phy_switch(dev, 1); 410 411 ret = ax_mii_probe(dev); 412 if (ret) 413 goto failed_mii_probe; 414 phy_start(ax->phy_dev); 415 416 ret = ax_ei_open(dev); 417 if (ret) 418 goto failed_ax_ei_open; 419 420 ax->running = 1; 421 422 return 0; 423 424 failed_ax_ei_open: 425 phy_disconnect(ax->phy_dev); 426 failed_mii_probe: 427 ax_phy_switch(dev, 0); 428 free_irq(dev->irq, dev); 429 failed_request_irq: 430 return ret; 431} 432 433static int ax_close(struct net_device *dev) 434{ 435 struct ax_device *ax = to_ax_dev(dev); 436 437 netdev_dbg(dev, "close\n"); 438 439 ax->running = 0; 440 wmb(); 441 442 ax_ei_close(dev); 443 444 /* turn the phy off */ 445 ax_phy_switch(dev, 0); 446 phy_disconnect(ax->phy_dev); 447 448 free_irq(dev->irq, dev); 449 return 0; 450} 451 452static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 453{ 454 struct ax_device *ax = to_ax_dev(dev); 455 struct phy_device *phy_dev = ax->phy_dev; 456 457 if (!netif_running(dev)) 458 return -EINVAL; 459 460 if (!phy_dev) 461 return -ENODEV; 462 463 return phy_mii_ioctl(phy_dev, req, cmd); 464} 465 466/* ethtool ops */ 467 468static void ax_get_drvinfo(struct net_device *dev, 469 struct ethtool_drvinfo *info) 470{ 471 struct platform_device *pdev = to_platform_device(dev->dev.parent); 472 473 strcpy(info->driver, DRV_NAME); 474 strcpy(info->version, DRV_VERSION); 475 strcpy(info->bus_info, pdev->name); 476} 477 478static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) 479{ 480 struct ax_device *ax = to_ax_dev(dev); 481 struct phy_device *phy_dev = ax->phy_dev; 482 483 if (!phy_dev) 484 return -ENODEV; 485 486 return phy_ethtool_gset(phy_dev, cmd); 487} 488 489static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) 490{ 491 struct ax_device *ax = to_ax_dev(dev); 492 struct phy_device *phy_dev = ax->phy_dev; 493 494 if (!phy_dev) 495 return -ENODEV; 496 497 return phy_ethtool_sset(phy_dev, cmd); 498} 499 500static const struct ethtool_ops ax_ethtool_ops = { 501 .get_drvinfo = ax_get_drvinfo, 502 .get_settings = ax_get_settings, 503 .set_settings = ax_set_settings, 504 .get_link = ethtool_op_get_link, 505}; 506 507#ifdef CONFIG_AX88796_93CX6 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, "%x", pdev->id); 627 628 ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); 629 if (!ax->mii_bus->irq) { 630 err = -ENOMEM; 631 goto out_free_mdio_bitbang; 632 } 633 634 for (i = 0; i < PHY_MAX_ADDR; i++) 635 ax->mii_bus->irq[i] = PHY_POLL; 636 637 err = mdiobus_register(ax->mii_bus); 638 if (err) 639 goto out_free_irq; 640 641 return 0; 642 643 out_free_irq: 644 kfree(ax->mii_bus->irq); 645 out_free_mdio_bitbang: 646 free_mdio_bitbang(ax->mii_bus); 647 out: 648 return err; 649} 650 651static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 652{ 653 void __iomem *ioaddr = ei_local->mem; 654 struct ax_device *ax = to_ax_dev(dev); 655 656 /* Select page 0 */ 657 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 658 659 /* set to byte access */ 660 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 661 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 662} 663 664/* 665 * ax_init_dev 666 * 667 * initialise the specified device, taking care to note the MAC 668 * address it may already have (if configured), ensure 669 * the device is ready to be used by lib8390.c and registerd with 670 * the network layer. 671 */ 672static int ax_init_dev(struct net_device *dev) 673{ 674 struct ei_device *ei_local = netdev_priv(dev); 675 struct ax_device *ax = to_ax_dev(dev); 676 void __iomem *ioaddr = ei_local->mem; 677 unsigned int start_page; 678 unsigned int stop_page; 679 int ret; 680 int i; 681 682 ret = ax_initial_check(dev); 683 if (ret) 684 goto err_out; 685 686 /* setup goes here */ 687 688 ax_initial_setup(dev, ei_local); 689 690 /* read the mac from the card prom if we need it */ 691 692 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 693 unsigned char SA_prom[32]; 694 695 for (i = 0; i < sizeof(SA_prom); i += 2) { 696 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 697 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 698 } 699 700 if (ax->plat->wordlength == 2) 701 for (i = 0; i < 16; i++) 702 SA_prom[i] = SA_prom[i+i]; 703 704 memcpy(dev->dev_addr, SA_prom, 6); 705 } 706 707#ifdef CONFIG_AX88796_93CX6 708 if (ax->plat->flags & AXFLG_HAS_93CX6) { 709 unsigned char mac_addr[6]; 710 struct eeprom_93cx6 eeprom; 711 712 eeprom.data = ei_local; 713 eeprom.register_read = ax_eeprom_register_read; 714 eeprom.register_write = ax_eeprom_register_write; 715 eeprom.width = PCI_EEPROM_WIDTH_93C56; 716 717 eeprom_93cx6_multiread(&eeprom, 0, 718 (__le16 __force *)mac_addr, 719 sizeof(mac_addr) >> 1); 720 721 memcpy(dev->dev_addr, mac_addr, 6); 722 } 723#endif 724 if (ax->plat->wordlength == 2) { 725 /* We must set the 8390 for word mode. */ 726 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 727 start_page = NESM_START_PG; 728 stop_page = NESM_STOP_PG; 729 } else { 730 start_page = NE1SM_START_PG; 731 stop_page = NE1SM_STOP_PG; 732 } 733 734 /* load the mac-address from the device */ 735 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 736 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 737 ei_local->mem + E8390_CMD); /* 0x61 */ 738 for (i = 0; i < ETH_ALEN; i++) 739 dev->dev_addr[i] = 740 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 741 } 742 743 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 744 ax->plat->mac_addr) 745 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 746 747 ax_reset_8390(dev); 748 749 ei_local->name = "AX88796"; 750 ei_local->tx_start_page = start_page; 751 ei_local->stop_page = stop_page; 752 ei_local->word16 = (ax->plat->wordlength == 2); 753 ei_local->rx_start_page = start_page + TX_PAGES; 754 755#ifdef PACKETBUF_MEMSIZE 756 /* Allow the packet buffer size to be overridden by know-it-alls. */ 757 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 758#endif 759 760 ei_local->reset_8390 = &ax_reset_8390; 761 ei_local->block_input = &ax_block_input; 762 ei_local->block_output = &ax_block_output; 763 ei_local->get_8390_hdr = &ax_get_8390_hdr; 764 ei_local->priv = 0; 765 766 dev->netdev_ops = &ax_netdev_ops; 767 dev->ethtool_ops = &ax_ethtool_ops; 768 769 ret = ax_mii_init(dev); 770 if (ret) 771 goto out_irq; 772 773 ax_NS8390_init(dev, 0); 774 775 ret = register_netdev(dev); 776 if (ret) 777 goto out_irq; 778 779 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 780 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 781 dev->dev_addr); 782 783 return 0; 784 785 out_irq: 786 /* cleanup irq */ 787 free_irq(dev->irq, dev); 788 err_out: 789 return ret; 790} 791 792static int ax_remove(struct platform_device *pdev) 793{ 794 struct net_device *dev = platform_get_drvdata(pdev); 795 struct ei_device *ei_local = netdev_priv(dev); 796 struct ax_device *ax = to_ax_dev(dev); 797 struct resource *mem; 798 799 unregister_netdev(dev); 800 free_irq(dev->irq, dev); 801 802 iounmap(ei_local->mem); 803 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 804 release_mem_region(mem->start, resource_size(mem)); 805 806 if (ax->map2) { 807 iounmap(ax->map2); 808 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 809 release_mem_region(mem->start, resource_size(mem)); 810 } 811 812 free_netdev(dev); 813 814 return 0; 815} 816 817/* 818 * ax_probe 819 * 820 * This is the entry point when the platform device system uses to 821 * notify us of a new device to attach to. Allocate memory, find the 822 * resources and information passed, and map the necessary registers. 823 */ 824static int ax_probe(struct platform_device *pdev) 825{ 826 struct net_device *dev; 827 struct ei_device *ei_local; 828 struct ax_device *ax; 829 struct resource *irq, *mem, *mem2; 830 resource_size_t mem_size, mem2_size = 0; 831 int ret = 0; 832 833 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 834 if (dev == NULL) 835 return -ENOMEM; 836 837 /* ok, let's setup our device */ 838 SET_NETDEV_DEV(dev, &pdev->dev); 839 ei_local = netdev_priv(dev); 840 ax = to_ax_dev(dev); 841 842 ax->plat = pdev->dev.platform_data; 843 platform_set_drvdata(pdev, dev); 844 845 ei_local->rxcr_base = ax->plat->rcr_val; 846 847 /* find the platform resources */ 848 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 849 if (!irq) { 850 dev_err(&pdev->dev, "no IRQ specified\n"); 851 ret = -ENXIO; 852 goto exit_mem; 853 } 854 855 dev->irq = irq->start; 856 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 857 858 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 859 if (!mem) { 860 dev_err(&pdev->dev, "no MEM specified\n"); 861 ret = -ENXIO; 862 goto exit_mem; 863 } 864 865 mem_size = resource_size(mem); 866 867 /* 868 * setup the register offsets from either the platform data or 869 * by using the size of the resource provided 870 */ 871 if (ax->plat->reg_offsets) 872 ei_local->reg_offset = ax->plat->reg_offsets; 873 else { 874 ei_local->reg_offset = ax->reg_offsets; 875 for (ret = 0; ret < 0x18; ret++) 876 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 877 } 878 879 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 880 dev_err(&pdev->dev, "cannot reserve registers\n"); 881 ret = -ENXIO; 882 goto exit_mem; 883 } 884 885 ei_local->mem = ioremap(mem->start, mem_size); 886 dev->base_addr = (unsigned long)ei_local->mem; 887 888 if (ei_local->mem == NULL) { 889 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 890 891 ret = -ENXIO; 892 goto exit_req; 893 } 894 895 /* look for reset area */ 896 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 897 if (!mem2) { 898 if (!ax->plat->reg_offsets) { 899 for (ret = 0; ret < 0x20; ret++) 900 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 901 } 902 } else { 903 mem2_size = resource_size(mem2); 904 905 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 906 dev_err(&pdev->dev, "cannot reserve registers\n"); 907 ret = -ENXIO; 908 goto exit_mem1; 909 } 910 911 ax->map2 = ioremap(mem2->start, mem2_size); 912 if (!ax->map2) { 913 dev_err(&pdev->dev, "cannot map reset register\n"); 914 ret = -ENXIO; 915 goto exit_mem2; 916 } 917 918 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 919 } 920 921 /* got resources, now initialise and register device */ 922 ret = ax_init_dev(dev); 923 if (!ret) 924 return 0; 925 926 if (!ax->map2) 927 goto exit_mem1; 928 929 iounmap(ax->map2); 930 931 exit_mem2: 932 release_mem_region(mem2->start, mem2_size); 933 934 exit_mem1: 935 iounmap(ei_local->mem); 936 937 exit_req: 938 release_mem_region(mem->start, mem_size); 939 940 exit_mem: 941 free_netdev(dev); 942 943 return ret; 944} 945 946/* suspend and resume */ 947 948#ifdef CONFIG_PM 949static int ax_suspend(struct platform_device *dev, pm_message_t state) 950{ 951 struct net_device *ndev = platform_get_drvdata(dev); 952 struct ax_device *ax = to_ax_dev(ndev); 953 954 ax->resume_open = ax->running; 955 956 netif_device_detach(ndev); 957 ax_close(ndev); 958 959 return 0; 960} 961 962static int ax_resume(struct platform_device *pdev) 963{ 964 struct net_device *ndev = platform_get_drvdata(pdev); 965 struct ax_device *ax = to_ax_dev(ndev); 966 967 ax_initial_setup(ndev, netdev_priv(ndev)); 968 ax_NS8390_init(ndev, ax->resume_open); 969 netif_device_attach(ndev); 970 971 if (ax->resume_open) 972 ax_open(ndev); 973 974 return 0; 975} 976 977#else 978#define ax_suspend NULL 979#define ax_resume NULL 980#endif 981 982static struct platform_driver axdrv = { 983 .driver = { 984 .name = "ax88796", 985 .owner = THIS_MODULE, 986 }, 987 .probe = ax_probe, 988 .remove = ax_remove, 989 .suspend = ax_suspend, 990 .resume = ax_resume, 991}; 992 993module_platform_driver(axdrv); 994 995MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 996MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 997MODULE_LICENSE("GPL v2"); 998MODULE_ALIAS("platform:ax88796"); 999