1 // SPDX-License-Identifier: GPL-2.0-only 2 /* drivers/net/ethernet/8390/ax88796.c 3 * 4 * Copyright 2005,2007 Simtec Electronics 5 * Ben Dooks <ben@simtec.co.uk> 6 * 7 * Asix AX88796 10/100 Ethernet controller support 8 * Based on ne.c, by Donald Becker, et-al. 9 */ 10 11 #include <linux/module.h> 12 #include <linux/kernel.h> 13 #include <linux/errno.h> 14 #include <linux/isapnp.h> 15 #include <linux/interrupt.h> 16 #include <linux/io.h> 17 #include <linux/platform_device.h> 18 #include <linux/delay.h> 19 #include <linux/timer.h> 20 #include <linux/netdevice.h> 21 #include <linux/etherdevice.h> 22 #include <linux/ethtool.h> 23 #include <linux/mdio-bitbang.h> 24 #include <linux/phy.h> 25 #include <linux/eeprom_93cx6.h> 26 #include <linux/slab.h> 27 28 #include <net/ax88796.h> 29 30 31 /* Rename the lib8390.c functions to show that they are in this driver */ 32 #define __ei_open ax_ei_open 33 #define __ei_close ax_ei_close 34 #define __ei_poll ax_ei_poll 35 #define __ei_start_xmit ax_ei_start_xmit 36 #define __ei_tx_timeout ax_ei_tx_timeout 37 #define __ei_get_stats ax_ei_get_stats 38 #define __ei_set_multicast_list ax_ei_set_multicast_list 39 #define __ei_interrupt ax_ei_interrupt 40 #define ____alloc_ei_netdev ax__alloc_ei_netdev 41 #define __NS8390_init ax_NS8390_init 42 43 /* force unsigned long back to 'void __iomem *' */ 44 #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) 45 46 #define ei_inb(_a) readb(ax_convert_addr(_a)) 47 #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) 48 49 #define ei_inb_p(_a) ei_inb(_a) 50 #define ei_outb_p(_v, _a) ei_outb(_v, _a) 51 52 /* define EI_SHIFT() to take into account our register offsets */ 53 #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) 54 55 /* Ensure we have our RCR base value */ 56 #define AX88796_PLATFORM 57 58 static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; 59 60 #include "lib8390.c" 61 62 #define DRV_NAME "ax88796" 63 #define DRV_VERSION "1.00" 64 65 /* from ne.c */ 66 #define NE_CMD EI_SHIFT(0x00) 67 #define NE_RESET EI_SHIFT(0x1f) 68 #define NE_DATAPORT EI_SHIFT(0x10) 69 70 #define NE1SM_START_PG 0x20 /* First page of TX buffer */ 71 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 72 #define NESM_START_PG 0x40 /* First page of TX buffer */ 73 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 74 75 #define AX_GPOC_PPDSET BIT(6) 76 77 /* device private data */ 78 79 struct ax_device { 80 struct mii_bus *mii_bus; 81 struct mdiobb_ctrl bb_ctrl; 82 void __iomem *addr_memr; 83 u8 reg_memr; 84 int link; 85 int speed; 86 int duplex; 87 88 void __iomem *map2; 89 const struct ax_plat_data *plat; 90 91 unsigned char running; 92 unsigned char resume_open; 93 unsigned int irqflags; 94 95 u32 reg_offsets[0x20]; 96 }; 97 98 static inline struct ax_device *to_ax_dev(struct net_device *dev) 99 { 100 struct ei_device *ei_local = netdev_priv(dev); 101 return (struct ax_device *)(ei_local + 1); 102 } 103 104 void ax_NS8390_reinit(struct net_device *dev) 105 { 106 ax_NS8390_init(dev, 1); 107 } 108 109 EXPORT_SYMBOL_GPL(ax_NS8390_reinit); 110 111 /* 112 * ax_initial_check 113 * 114 * do an initial probe for the card to check whether it exists 115 * and is functional 116 */ 117 static int ax_initial_check(struct net_device *dev) 118 { 119 struct ei_device *ei_local = netdev_priv(dev); 120 void __iomem *ioaddr = ei_local->mem; 121 int reg0; 122 int regd; 123 124 reg0 = ei_inb(ioaddr); 125 if (reg0 == 0xFF) 126 return -ENODEV; 127 128 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 129 regd = ei_inb(ioaddr + 0x0d); 130 ei_outb(0xff, ioaddr + 0x0d); 131 ei_outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 132 ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 133 if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { 134 ei_outb(reg0, ioaddr); 135 ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ 136 return -ENODEV; 137 } 138 139 return 0; 140 } 141 142 /* 143 * Hard reset the card. This used to pause for the same period that a 144 * 8390 reset command required, but that shouldn't be necessary. 145 */ 146 static void ax_reset_8390(struct net_device *dev) 147 { 148 struct ei_device *ei_local = netdev_priv(dev); 149 unsigned long reset_start_time = jiffies; 150 void __iomem *addr = (void __iomem *)dev->base_addr; 151 152 netif_dbg(ei_local, hw, 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 (time_after(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 /* Wrapper for __ei_interrupt for platforms that have a platform-specific 171 * way to find out whether the interrupt request might be caused by 172 * the ax88796 chip. 173 */ 174 static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) 175 { 176 struct net_device *dev = dev_id; 177 struct ax_device *ax = to_ax_dev(dev); 178 struct platform_device *pdev = to_platform_device(dev->dev.parent); 179 180 if (!ax->plat->check_irq(pdev)) 181 return IRQ_NONE; 182 183 return ax_ei_interrupt(irq, dev_id); 184 } 185 186 static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 187 int ring_page) 188 { 189 struct ei_device *ei_local = netdev_priv(dev); 190 void __iomem *nic_base = ei_local->mem; 191 192 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 193 if (ei_local->dmaing) { 194 netdev_err(dev, "DMAing conflict in %s " 195 "[DMAstat:%d][irqlock:%d].\n", 196 __func__, 197 ei_local->dmaing, ei_local->irqlock); 198 return; 199 } 200 201 ei_local->dmaing |= 0x01; 202 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 203 ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 204 ei_outb(0, nic_base + EN0_RCNTHI); 205 ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 206 ei_outb(ring_page, nic_base + EN0_RSARHI); 207 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 208 209 if (ei_local->word16) 210 ioread16_rep(nic_base + NE_DATAPORT, hdr, 211 sizeof(struct e8390_pkt_hdr) >> 1); 212 else 213 ioread8_rep(nic_base + NE_DATAPORT, hdr, 214 sizeof(struct e8390_pkt_hdr)); 215 216 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 217 ei_local->dmaing &= ~0x01; 218 219 le16_to_cpus(&hdr->count); 220 } 221 222 223 /* 224 * Block input and output, similar to the Crynwr packet driver. If 225 * you are porting to a new ethercard, look at the packet driver 226 * source for hints. The NEx000 doesn't share the on-board packet 227 * memory -- you have to put the packet out through the "remote DMA" 228 * dataport using ei_outb. 229 */ 230 static void ax_block_input(struct net_device *dev, int count, 231 struct sk_buff *skb, int ring_offset) 232 { 233 struct ei_device *ei_local = netdev_priv(dev); 234 void __iomem *nic_base = ei_local->mem; 235 char *buf = skb->data; 236 237 if (ei_local->dmaing) { 238 netdev_err(dev, 239 "DMAing conflict in %s " 240 "[DMAstat:%d][irqlock:%d].\n", 241 __func__, 242 ei_local->dmaing, ei_local->irqlock); 243 return; 244 } 245 246 ei_local->dmaing |= 0x01; 247 248 ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + NE_CMD); 249 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 250 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 251 ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 252 ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); 253 ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 254 255 if (ei_local->word16) { 256 ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 257 if (count & 0x01) 258 buf[count-1] = ei_inb(nic_base + NE_DATAPORT); 259 260 } else { 261 ioread8_rep(nic_base + NE_DATAPORT, buf, count); 262 } 263 264 ei_local->dmaing &= ~1; 265 } 266 267 static void ax_block_output(struct net_device *dev, int count, 268 const unsigned char *buf, const int start_page) 269 { 270 struct ei_device *ei_local = netdev_priv(dev); 271 void __iomem *nic_base = ei_local->mem; 272 unsigned long dma_start; 273 274 /* 275 * Round the count up for word writes. Do we need to do this? 276 * What effect will an odd byte count have on the 8390? I 277 * should check someday. 278 */ 279 if (ei_local->word16 && (count & 0x01)) 280 count++; 281 282 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 283 if (ei_local->dmaing) { 284 netdev_err(dev, "DMAing conflict in %s." 285 "[DMAstat:%d][irqlock:%d]\n", 286 __func__, 287 ei_local->dmaing, ei_local->irqlock); 288 return; 289 } 290 291 ei_local->dmaing |= 0x01; 292 /* We should already be in page 0, but to be safe... */ 293 ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 294 295 ei_outb(ENISR_RDC, nic_base + EN0_ISR); 296 297 /* Now the normal output. */ 298 ei_outb(count & 0xff, nic_base + EN0_RCNTLO); 299 ei_outb(count >> 8, nic_base + EN0_RCNTHI); 300 ei_outb(0x00, nic_base + EN0_RSARLO); 301 ei_outb(start_page, nic_base + EN0_RSARHI); 302 303 ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 304 if (ei_local->word16) 305 iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); 306 else 307 iowrite8_rep(nic_base + NE_DATAPORT, buf, count); 308 309 dma_start = jiffies; 310 311 while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { 312 if (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */ 313 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 314 ax_reset_8390(dev); 315 ax_NS8390_init(dev, 1); 316 break; 317 } 318 } 319 320 ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 321 ei_local->dmaing &= ~0x01; 322 } 323 324 /* definitions for accessing MII/EEPROM interface */ 325 326 #define AX_MEMR EI_SHIFT(0x14) 327 #define AX_MEMR_MDC BIT(0) 328 #define AX_MEMR_MDIR BIT(1) 329 #define AX_MEMR_MDI BIT(2) 330 #define AX_MEMR_MDO BIT(3) 331 #define AX_MEMR_EECS BIT(4) 332 #define AX_MEMR_EEI BIT(5) 333 #define AX_MEMR_EEO BIT(6) 334 #define AX_MEMR_EECLK BIT(7) 335 336 static void ax_handle_link_change(struct net_device *dev) 337 { 338 struct ax_device *ax = to_ax_dev(dev); 339 struct phy_device *phy_dev = dev->phydev; 340 int status_change = 0; 341 342 if (phy_dev->link && ((ax->speed != phy_dev->speed) || 343 (ax->duplex != phy_dev->duplex))) { 344 345 ax->speed = phy_dev->speed; 346 ax->duplex = phy_dev->duplex; 347 status_change = 1; 348 } 349 350 if (phy_dev->link != ax->link) { 351 if (!phy_dev->link) { 352 ax->speed = 0; 353 ax->duplex = -1; 354 } 355 ax->link = phy_dev->link; 356 357 status_change = 1; 358 } 359 360 if (status_change) 361 phy_print_status(phy_dev); 362 } 363 364 static int ax_mii_probe(struct net_device *dev) 365 { 366 struct ax_device *ax = to_ax_dev(dev); 367 struct phy_device *phy_dev = NULL; 368 int ret; 369 370 /* find the first phy */ 371 phy_dev = phy_find_first(ax->mii_bus); 372 if (!phy_dev) { 373 netdev_err(dev, "no PHY found\n"); 374 return -ENODEV; 375 } 376 377 ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change, 378 PHY_INTERFACE_MODE_MII); 379 if (ret) { 380 netdev_err(dev, "Could not attach to PHY\n"); 381 return ret; 382 } 383 384 phy_set_max_speed(phy_dev, SPEED_100); 385 386 netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", 387 phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq); 388 389 return 0; 390 } 391 392 static void ax_phy_switch(struct net_device *dev, int on) 393 { 394 struct ei_device *ei_local = netdev_priv(dev); 395 struct ax_device *ax = to_ax_dev(dev); 396 397 u8 reg_gpoc = ax->plat->gpoc_val; 398 399 if (!!on) 400 reg_gpoc &= ~AX_GPOC_PPDSET; 401 else 402 reg_gpoc |= AX_GPOC_PPDSET; 403 404 ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17)); 405 } 406 407 static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level) 408 { 409 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 410 411 if (level) 412 ax->reg_memr |= AX_MEMR_MDC; 413 else 414 ax->reg_memr &= ~AX_MEMR_MDC; 415 416 ei_outb(ax->reg_memr, ax->addr_memr); 417 } 418 419 static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output) 420 { 421 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 422 423 if (output) 424 ax->reg_memr &= ~AX_MEMR_MDIR; 425 else 426 ax->reg_memr |= AX_MEMR_MDIR; 427 428 ei_outb(ax->reg_memr, ax->addr_memr); 429 } 430 431 static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value) 432 { 433 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 434 435 if (value) 436 ax->reg_memr |= AX_MEMR_MDO; 437 else 438 ax->reg_memr &= ~AX_MEMR_MDO; 439 440 ei_outb(ax->reg_memr, ax->addr_memr); 441 } 442 443 static int ax_bb_get_data(struct mdiobb_ctrl *ctrl) 444 { 445 struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl); 446 int reg_memr = ei_inb(ax->addr_memr); 447 448 return reg_memr & AX_MEMR_MDI ? 1 : 0; 449 } 450 451 static const struct mdiobb_ops bb_ops = { 452 .owner = THIS_MODULE, 453 .set_mdc = ax_bb_mdc, 454 .set_mdio_dir = ax_bb_dir, 455 .set_mdio_data = ax_bb_set_data, 456 .get_mdio_data = ax_bb_get_data, 457 }; 458 459 static int ax_mii_init(struct net_device *dev) 460 { 461 struct platform_device *pdev = to_platform_device(dev->dev.parent); 462 struct ei_device *ei_local = netdev_priv(dev); 463 struct ax_device *ax = to_ax_dev(dev); 464 int err; 465 466 ax->bb_ctrl.ops = &bb_ops; 467 ax->addr_memr = ei_local->mem + AX_MEMR; 468 ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl); 469 if (!ax->mii_bus) { 470 err = -ENOMEM; 471 goto out; 472 } 473 474 ax->mii_bus->name = "ax88796_mii_bus"; 475 ax->mii_bus->parent = dev->dev.parent; 476 snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 477 pdev->name, pdev->id); 478 479 err = mdiobus_register(ax->mii_bus); 480 if (err) 481 goto out_free_mdio_bitbang; 482 483 return 0; 484 485 out_free_mdio_bitbang: 486 free_mdio_bitbang(ax->mii_bus); 487 out: 488 return err; 489 } 490 491 static int ax_open(struct net_device *dev) 492 { 493 struct ax_device *ax = to_ax_dev(dev); 494 int ret; 495 496 netdev_dbg(dev, "open\n"); 497 498 ret = ax_mii_init(dev); 499 if (ret) 500 goto failed_mii; 501 502 if (ax->plat->check_irq) 503 ret = request_irq(dev->irq, ax_ei_interrupt_filtered, 504 ax->irqflags, dev->name, dev); 505 else 506 ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, 507 dev->name, dev); 508 if (ret) 509 goto failed_request_irq; 510 511 /* turn the phy on (if turned off) */ 512 ax_phy_switch(dev, 1); 513 514 ret = ax_mii_probe(dev); 515 if (ret) 516 goto failed_mii_probe; 517 phy_start(dev->phydev); 518 519 ret = ax_ei_open(dev); 520 if (ret) 521 goto failed_ax_ei_open; 522 523 ax->running = 1; 524 525 return 0; 526 527 failed_ax_ei_open: 528 phy_disconnect(dev->phydev); 529 failed_mii_probe: 530 ax_phy_switch(dev, 0); 531 free_irq(dev->irq, dev); 532 failed_request_irq: 533 /* unregister mdiobus */ 534 mdiobus_unregister(ax->mii_bus); 535 free_mdio_bitbang(ax->mii_bus); 536 failed_mii: 537 return ret; 538 } 539 540 static int ax_close(struct net_device *dev) 541 { 542 struct ax_device *ax = to_ax_dev(dev); 543 544 netdev_dbg(dev, "close\n"); 545 546 ax->running = 0; 547 wmb(); 548 549 ax_ei_close(dev); 550 551 /* turn the phy off */ 552 ax_phy_switch(dev, 0); 553 phy_disconnect(dev->phydev); 554 555 free_irq(dev->irq, dev); 556 557 mdiobus_unregister(ax->mii_bus); 558 free_mdio_bitbang(ax->mii_bus); 559 return 0; 560 } 561 562 static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 563 { 564 struct phy_device *phy_dev = dev->phydev; 565 566 if (!netif_running(dev)) 567 return -EINVAL; 568 569 if (!phy_dev) 570 return -ENODEV; 571 572 return phy_mii_ioctl(phy_dev, req, cmd); 573 } 574 575 /* ethtool ops */ 576 577 static void ax_get_drvinfo(struct net_device *dev, 578 struct ethtool_drvinfo *info) 579 { 580 struct platform_device *pdev = to_platform_device(dev->dev.parent); 581 582 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 583 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 584 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info)); 585 } 586 587 static u32 ax_get_msglevel(struct net_device *dev) 588 { 589 struct ei_device *ei_local = netdev_priv(dev); 590 591 return ei_local->msg_enable; 592 } 593 594 static void ax_set_msglevel(struct net_device *dev, u32 v) 595 { 596 struct ei_device *ei_local = netdev_priv(dev); 597 598 ei_local->msg_enable = v; 599 } 600 601 static const struct ethtool_ops ax_ethtool_ops = { 602 .get_drvinfo = ax_get_drvinfo, 603 .get_link = ethtool_op_get_link, 604 .get_ts_info = ethtool_op_get_ts_info, 605 .get_msglevel = ax_get_msglevel, 606 .set_msglevel = ax_set_msglevel, 607 .get_link_ksettings = phy_ethtool_get_link_ksettings, 608 .set_link_ksettings = phy_ethtool_set_link_ksettings, 609 }; 610 611 #ifdef CONFIG_AX88796_93CX6 612 static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) 613 { 614 struct ei_device *ei_local = eeprom->data; 615 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 616 617 eeprom->reg_data_in = reg & AX_MEMR_EEI; 618 eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ 619 eeprom->reg_data_clock = reg & AX_MEMR_EECLK; 620 eeprom->reg_chip_select = reg & AX_MEMR_EECS; 621 } 622 623 static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom) 624 { 625 struct ei_device *ei_local = eeprom->data; 626 u8 reg = ei_inb(ei_local->mem + AX_MEMR); 627 628 reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); 629 630 if (eeprom->reg_data_in) 631 reg |= AX_MEMR_EEI; 632 if (eeprom->reg_data_clock) 633 reg |= AX_MEMR_EECLK; 634 if (eeprom->reg_chip_select) 635 reg |= AX_MEMR_EECS; 636 637 ei_outb(reg, ei_local->mem + AX_MEMR); 638 udelay(10); 639 } 640 #endif 641 642 static const struct net_device_ops ax_netdev_ops = { 643 .ndo_open = ax_open, 644 .ndo_stop = ax_close, 645 .ndo_eth_ioctl = ax_ioctl, 646 647 .ndo_start_xmit = ax_ei_start_xmit, 648 .ndo_tx_timeout = ax_ei_tx_timeout, 649 .ndo_get_stats = ax_ei_get_stats, 650 .ndo_set_rx_mode = ax_ei_set_multicast_list, 651 .ndo_validate_addr = eth_validate_addr, 652 .ndo_set_mac_address = eth_mac_addr, 653 #ifdef CONFIG_NET_POLL_CONTROLLER 654 .ndo_poll_controller = ax_ei_poll, 655 #endif 656 }; 657 658 /* setup code */ 659 660 static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) 661 { 662 void __iomem *ioaddr = ei_local->mem; 663 struct ax_device *ax = to_ax_dev(dev); 664 665 /* Select page 0 */ 666 ei_outb(E8390_NODMA + E8390_PAGE0 + E8390_STOP, ioaddr + E8390_CMD); 667 668 /* set to byte access */ 669 ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); 670 ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); 671 } 672 673 /* 674 * ax_init_dev 675 * 676 * initialise the specified device, taking care to note the MAC 677 * address it may already have (if configured), ensure 678 * the device is ready to be used by lib8390.c and registerd with 679 * the network layer. 680 */ 681 static int ax_init_dev(struct net_device *dev) 682 { 683 struct ei_device *ei_local = netdev_priv(dev); 684 struct ax_device *ax = to_ax_dev(dev); 685 void __iomem *ioaddr = ei_local->mem; 686 unsigned int start_page; 687 unsigned int stop_page; 688 int ret; 689 int i; 690 691 ret = ax_initial_check(dev); 692 if (ret) 693 goto err_out; 694 695 /* setup goes here */ 696 697 ax_initial_setup(dev, ei_local); 698 699 /* read the mac from the card prom if we need it */ 700 701 if (ax->plat->flags & AXFLG_HAS_EEPROM) { 702 unsigned char SA_prom[32]; 703 704 ei_outb(6, ioaddr + EN0_RCNTLO); 705 ei_outb(0, ioaddr + EN0_RCNTHI); 706 ei_outb(0, ioaddr + EN0_RSARLO); 707 ei_outb(0, ioaddr + EN0_RSARHI); 708 ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD); 709 for (i = 0; i < sizeof(SA_prom); i += 2) { 710 SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); 711 SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT); 712 } 713 ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */ 714 715 if (ax->plat->wordlength == 2) 716 for (i = 0; i < 16; i++) 717 SA_prom[i] = SA_prom[i+i]; 718 719 memcpy(dev->dev_addr, SA_prom, ETH_ALEN); 720 } 721 722 #ifdef CONFIG_AX88796_93CX6 723 if (ax->plat->flags & AXFLG_HAS_93CX6) { 724 unsigned char mac_addr[ETH_ALEN]; 725 struct eeprom_93cx6 eeprom; 726 727 eeprom.data = ei_local; 728 eeprom.register_read = ax_eeprom_register_read; 729 eeprom.register_write = ax_eeprom_register_write; 730 eeprom.width = PCI_EEPROM_WIDTH_93C56; 731 732 eeprom_93cx6_multiread(&eeprom, 0, 733 (__le16 __force *)mac_addr, 734 sizeof(mac_addr) >> 1); 735 736 memcpy(dev->dev_addr, mac_addr, ETH_ALEN); 737 } 738 #endif 739 if (ax->plat->wordlength == 2) { 740 /* We must set the 8390 for word mode. */ 741 ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); 742 start_page = NESM_START_PG; 743 stop_page = NESM_STOP_PG; 744 } else { 745 start_page = NE1SM_START_PG; 746 stop_page = NE1SM_STOP_PG; 747 } 748 749 /* load the mac-address from the device */ 750 if (ax->plat->flags & AXFLG_MAC_FROMDEV) { 751 ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 752 ei_local->mem + E8390_CMD); /* 0x61 */ 753 for (i = 0; i < ETH_ALEN; i++) 754 dev->dev_addr[i] = 755 ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); 756 } 757 758 if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && 759 ax->plat->mac_addr) 760 memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN); 761 762 if (!is_valid_ether_addr(dev->dev_addr)) { 763 eth_hw_addr_random(dev); 764 dev_info(&dev->dev, "Using random MAC address: %pM\n", 765 dev->dev_addr); 766 } 767 768 ax_reset_8390(dev); 769 770 ei_local->name = "AX88796"; 771 ei_local->tx_start_page = start_page; 772 ei_local->stop_page = stop_page; 773 ei_local->word16 = (ax->plat->wordlength == 2); 774 ei_local->rx_start_page = start_page + TX_PAGES; 775 776 #ifdef PACKETBUF_MEMSIZE 777 /* Allow the packet buffer size to be overridden by know-it-alls. */ 778 ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE; 779 #endif 780 781 ei_local->reset_8390 = &ax_reset_8390; 782 if (ax->plat->block_input) 783 ei_local->block_input = ax->plat->block_input; 784 else 785 ei_local->block_input = &ax_block_input; 786 if (ax->plat->block_output) 787 ei_local->block_output = ax->plat->block_output; 788 else 789 ei_local->block_output = &ax_block_output; 790 ei_local->get_8390_hdr = &ax_get_8390_hdr; 791 ei_local->priv = 0; 792 793 dev->netdev_ops = &ax_netdev_ops; 794 dev->ethtool_ops = &ax_ethtool_ops; 795 796 ax_NS8390_init(dev, 0); 797 798 ret = register_netdev(dev); 799 if (ret) 800 goto err_out; 801 802 netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n", 803 ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr, 804 dev->dev_addr); 805 806 return 0; 807 808 err_out: 809 return ret; 810 } 811 812 static int ax_remove(struct platform_device *pdev) 813 { 814 struct net_device *dev = platform_get_drvdata(pdev); 815 struct ei_device *ei_local = netdev_priv(dev); 816 struct ax_device *ax = to_ax_dev(dev); 817 struct resource *mem; 818 819 unregister_netdev(dev); 820 821 iounmap(ei_local->mem); 822 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 823 release_mem_region(mem->start, resource_size(mem)); 824 825 if (ax->map2) { 826 iounmap(ax->map2); 827 mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); 828 release_mem_region(mem->start, resource_size(mem)); 829 } 830 831 platform_set_drvdata(pdev, NULL); 832 free_netdev(dev); 833 834 return 0; 835 } 836 837 /* 838 * ax_probe 839 * 840 * This is the entry point when the platform device system uses to 841 * notify us of a new device to attach to. Allocate memory, find the 842 * resources and information passed, and map the necessary registers. 843 */ 844 static int ax_probe(struct platform_device *pdev) 845 { 846 struct net_device *dev; 847 struct ei_device *ei_local; 848 struct ax_device *ax; 849 struct resource *irq, *mem, *mem2; 850 unsigned long mem_size, mem2_size = 0; 851 int ret = 0; 852 853 dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); 854 if (dev == NULL) 855 return -ENOMEM; 856 857 /* ok, let's setup our device */ 858 SET_NETDEV_DEV(dev, &pdev->dev); 859 ei_local = netdev_priv(dev); 860 ax = to_ax_dev(dev); 861 862 ax->plat = dev_get_platdata(&pdev->dev); 863 platform_set_drvdata(pdev, dev); 864 865 ei_local->rxcr_base = ax->plat->rcr_val; 866 867 /* find the platform resources */ 868 irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 869 if (!irq) { 870 dev_err(&pdev->dev, "no IRQ specified\n"); 871 ret = -ENXIO; 872 goto exit_mem; 873 } 874 875 dev->irq = irq->start; 876 ax->irqflags = irq->flags & IRQF_TRIGGER_MASK; 877 878 if (irq->flags & IORESOURCE_IRQ_SHAREABLE) 879 ax->irqflags |= IRQF_SHARED; 880 881 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 882 if (!mem) { 883 dev_err(&pdev->dev, "no MEM specified\n"); 884 ret = -ENXIO; 885 goto exit_mem; 886 } 887 888 mem_size = resource_size(mem); 889 890 /* 891 * setup the register offsets from either the platform data or 892 * by using the size of the resource provided 893 */ 894 if (ax->plat->reg_offsets) 895 ei_local->reg_offset = ax->plat->reg_offsets; 896 else { 897 ei_local->reg_offset = ax->reg_offsets; 898 for (ret = 0; ret < 0x18; ret++) 899 ax->reg_offsets[ret] = (mem_size / 0x18) * ret; 900 } 901 902 if (!request_mem_region(mem->start, mem_size, pdev->name)) { 903 dev_err(&pdev->dev, "cannot reserve registers\n"); 904 ret = -ENXIO; 905 goto exit_mem; 906 } 907 908 ei_local->mem = ioremap(mem->start, mem_size); 909 dev->base_addr = (unsigned long)ei_local->mem; 910 911 if (ei_local->mem == NULL) { 912 dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem); 913 914 ret = -ENXIO; 915 goto exit_req; 916 } 917 918 /* look for reset area */ 919 mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); 920 if (!mem2) { 921 if (!ax->plat->reg_offsets) { 922 for (ret = 0; ret < 0x20; ret++) 923 ax->reg_offsets[ret] = (mem_size / 0x20) * ret; 924 } 925 } else { 926 mem2_size = resource_size(mem2); 927 928 if (!request_mem_region(mem2->start, mem2_size, pdev->name)) { 929 dev_err(&pdev->dev, "cannot reserve registers\n"); 930 ret = -ENXIO; 931 goto exit_mem1; 932 } 933 934 ax->map2 = ioremap(mem2->start, mem2_size); 935 if (!ax->map2) { 936 dev_err(&pdev->dev, "cannot map reset register\n"); 937 ret = -ENXIO; 938 goto exit_mem2; 939 } 940 941 ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem; 942 } 943 944 /* got resources, now initialise and register device */ 945 ret = ax_init_dev(dev); 946 if (!ret) 947 return 0; 948 949 if (!ax->map2) 950 goto exit_mem1; 951 952 iounmap(ax->map2); 953 954 exit_mem2: 955 if (mem2) 956 release_mem_region(mem2->start, mem2_size); 957 958 exit_mem1: 959 iounmap(ei_local->mem); 960 961 exit_req: 962 release_mem_region(mem->start, mem_size); 963 964 exit_mem: 965 platform_set_drvdata(pdev, NULL); 966 free_netdev(dev); 967 968 return ret; 969 } 970 971 /* suspend and resume */ 972 973 #ifdef CONFIG_PM 974 static int ax_suspend(struct platform_device *dev, pm_message_t state) 975 { 976 struct net_device *ndev = platform_get_drvdata(dev); 977 struct ax_device *ax = to_ax_dev(ndev); 978 979 ax->resume_open = ax->running; 980 981 netif_device_detach(ndev); 982 ax_close(ndev); 983 984 return 0; 985 } 986 987 static int ax_resume(struct platform_device *pdev) 988 { 989 struct net_device *ndev = platform_get_drvdata(pdev); 990 struct ax_device *ax = to_ax_dev(ndev); 991 992 ax_initial_setup(ndev, netdev_priv(ndev)); 993 ax_NS8390_init(ndev, ax->resume_open); 994 netif_device_attach(ndev); 995 996 if (ax->resume_open) 997 ax_open(ndev); 998 999 return 0; 1000 } 1001 1002 #else 1003 #define ax_suspend NULL 1004 #define ax_resume NULL 1005 #endif 1006 1007 static struct platform_driver axdrv = { 1008 .driver = { 1009 .name = "ax88796", 1010 }, 1011 .probe = ax_probe, 1012 .remove = ax_remove, 1013 .suspend = ax_suspend, 1014 .resume = ax_resume, 1015 }; 1016 1017 module_platform_driver(axdrv); 1018 1019 MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); 1020 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); 1021 MODULE_LICENSE("GPL v2"); 1022 MODULE_ALIAS("platform:ax88796"); 1023