| 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/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/mii.h> |
| 27 | #include <linux/eeprom_93cx6.h> |
| 28 | |
| 29 | #include <net/ax88796.h> |
| 30 | |
| 31 | #include <asm/system.h> |
| 32 | #include <asm/io.h> |
| 33 | |
| 34 | static int phy_debug = 0; |
| 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 | |
| 63 | static 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 | /* device private data */ |
| 81 | |
| 82 | struct ax_device { |
| 83 | struct timer_list mii_timer; |
| 84 | spinlock_t mii_lock; |
| 85 | struct mii_if_info mii; |
| 86 | |
| 87 | u32 msg_enable; |
| 88 | void __iomem *map2; |
| 89 | struct platform_device *dev; |
| 90 | struct resource *mem; |
| 91 | struct resource *mem2; |
| 92 | struct ax_plat_data *plat; |
| 93 | |
| 94 | unsigned char running; |
| 95 | unsigned char resume_open; |
| 96 | unsigned int irqflags; |
| 97 | |
| 98 | u32 reg_offsets[0x20]; |
| 99 | }; |
| 100 | |
| 101 | static inline struct ax_device *to_ax_dev(struct net_device *dev) |
| 102 | { |
| 103 | struct ei_device *ei_local = netdev_priv(dev); |
| 104 | return (struct ax_device *)(ei_local+1); |
| 105 | } |
| 106 | |
| 107 | /* ax_initial_check |
| 108 | * |
| 109 | * do an initial probe for the card to check wether it exists |
| 110 | * and is functional |
| 111 | */ |
| 112 | |
| 113 | static int ax_initial_check(struct net_device *dev) |
| 114 | { |
| 115 | struct ei_device *ei_local = netdev_priv(dev); |
| 116 | void __iomem *ioaddr = ei_local->mem; |
| 117 | int reg0; |
| 118 | int regd; |
| 119 | |
| 120 | reg0 = ei_inb(ioaddr); |
| 121 | if (reg0 == 0xFF) |
| 122 | return -ENODEV; |
| 123 | |
| 124 | ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); |
| 125 | regd = ei_inb(ioaddr + 0x0d); |
| 126 | ei_outb(0xff, ioaddr + 0x0d); |
| 127 | ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); |
| 128 | ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ |
| 129 | if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { |
| 130 | ei_outb(reg0, ioaddr); |
| 131 | ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ |
| 132 | return -ENODEV; |
| 133 | } |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | /* Hard reset the card. This used to pause for the same period that a |
| 139 | 8390 reset command required, but that shouldn't be necessary. */ |
| 140 | |
| 141 | static void ax_reset_8390(struct net_device *dev) |
| 142 | { |
| 143 | struct ei_device *ei_local = netdev_priv(dev); |
| 144 | struct ax_device *ax = to_ax_dev(dev); |
| 145 | unsigned long reset_start_time = jiffies; |
| 146 | void __iomem *addr = (void __iomem *)dev->base_addr; |
| 147 | |
| 148 | if (ei_debug > 1) |
| 149 | dev_dbg(&ax->dev->dev, "resetting the 8390 t=%ld\n", jiffies); |
| 150 | |
| 151 | ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); |
| 152 | |
| 153 | ei_status.txing = 0; |
| 154 | ei_status.dmaing = 0; |
| 155 | |
| 156 | /* This check _should_not_ be necessary, omit eventually. */ |
| 157 | while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { |
| 158 | if (jiffies - reset_start_time > 2*HZ/100) { |
| 159 | dev_warn(&ax->dev->dev, "%s: %s did not complete.\n", |
| 160 | __func__, dev->name); |
| 161 | break; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ |
| 166 | } |
| 167 | |
| 168 | |
| 169 | static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
| 170 | int ring_page) |
| 171 | { |
| 172 | struct ei_device *ei_local = netdev_priv(dev); |
| 173 | struct ax_device *ax = to_ax_dev(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_status.dmaing) { |
| 178 | dev_err(&ax->dev->dev, "%s: DMAing conflict in %s " |
| 179 | "[DMAstat:%d][irqlock:%d].\n", |
| 180 | dev->name, __func__, |
| 181 | ei_status.dmaing, ei_status.irqlock); |
| 182 | return; |
| 183 | } |
| 184 | |
| 185 | ei_status.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_status.word16) |
| 194 | readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); |
| 195 | else |
| 196 | readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); |
| 197 | |
| 198 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
| 199 | ei_status.dmaing &= ~0x01; |
| 200 | |
| 201 | le16_to_cpus(&hdr->count); |
| 202 | } |
| 203 | |
| 204 | |
| 205 | /* Block input and output, similar to the Crynwr packet driver. If you |
| 206 | are porting to a new ethercard, look at the packet driver source for hints. |
| 207 | The NEx000 doesn't share the on-board packet memory -- you have to put |
| 208 | the packet out through the "remote DMA" dataport using ei_outb. */ |
| 209 | |
| 210 | static void ax_block_input(struct net_device *dev, int count, |
| 211 | struct sk_buff *skb, int ring_offset) |
| 212 | { |
| 213 | struct ei_device *ei_local = netdev_priv(dev); |
| 214 | struct ax_device *ax = to_ax_dev(dev); |
| 215 | void __iomem *nic_base = ei_local->mem; |
| 216 | char *buf = skb->data; |
| 217 | |
| 218 | if (ei_status.dmaing) { |
| 219 | dev_err(&ax->dev->dev, |
| 220 | "%s: DMAing conflict in %s " |
| 221 | "[DMAstat:%d][irqlock:%d].\n", |
| 222 | dev->name, __func__, |
| 223 | ei_status.dmaing, ei_status.irqlock); |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | ei_status.dmaing |= 0x01; |
| 228 | |
| 229 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); |
| 230 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
| 231 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
| 232 | ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); |
| 233 | ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); |
| 234 | ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); |
| 235 | |
| 236 | if (ei_status.word16) { |
| 237 | readsw(nic_base + NE_DATAPORT, buf, count >> 1); |
| 238 | if (count & 0x01) |
| 239 | buf[count-1] = ei_inb(nic_base + NE_DATAPORT); |
| 240 | |
| 241 | } else { |
| 242 | readsb(nic_base + NE_DATAPORT, buf, count); |
| 243 | } |
| 244 | |
| 245 | ei_status.dmaing &= ~1; |
| 246 | } |
| 247 | |
| 248 | static void ax_block_output(struct net_device *dev, int count, |
| 249 | const unsigned char *buf, const int start_page) |
| 250 | { |
| 251 | struct ei_device *ei_local = netdev_priv(dev); |
| 252 | struct ax_device *ax = to_ax_dev(dev); |
| 253 | void __iomem *nic_base = ei_local->mem; |
| 254 | unsigned long dma_start; |
| 255 | |
| 256 | /* Round the count up for word writes. Do we need to do this? |
| 257 | What effect will an odd byte count have on the 8390? |
| 258 | I should check someday. */ |
| 259 | |
| 260 | if (ei_status.word16 && (count & 0x01)) |
| 261 | count++; |
| 262 | |
| 263 | /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
| 264 | if (ei_status.dmaing) { |
| 265 | dev_err(&ax->dev->dev, "%s: DMAing conflict in %s." |
| 266 | "[DMAstat:%d][irqlock:%d]\n", |
| 267 | dev->name, __func__, |
| 268 | ei_status.dmaing, ei_status.irqlock); |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | ei_status.dmaing |= 0x01; |
| 273 | /* We should already be in page 0, but to be safe... */ |
| 274 | ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); |
| 275 | |
| 276 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); |
| 277 | |
| 278 | /* Now the normal output. */ |
| 279 | ei_outb(count & 0xff, nic_base + EN0_RCNTLO); |
| 280 | ei_outb(count >> 8, nic_base + EN0_RCNTHI); |
| 281 | ei_outb(0x00, nic_base + EN0_RSARLO); |
| 282 | ei_outb(start_page, nic_base + EN0_RSARHI); |
| 283 | |
| 284 | ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); |
| 285 | if (ei_status.word16) { |
| 286 | writesw(nic_base + NE_DATAPORT, buf, count>>1); |
| 287 | } else { |
| 288 | writesb(nic_base + NE_DATAPORT, buf, count); |
| 289 | } |
| 290 | |
| 291 | dma_start = jiffies; |
| 292 | |
| 293 | while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { |
| 294 | if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ |
| 295 | dev_warn(&ax->dev->dev, |
| 296 | "%s: timeout waiting for Tx RDC.\n", dev->name); |
| 297 | ax_reset_8390(dev); |
| 298 | ax_NS8390_init(dev,1); |
| 299 | break; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
| 304 | ei_status.dmaing &= ~0x01; |
| 305 | return; |
| 306 | } |
| 307 | |
| 308 | /* definitions for accessing MII/EEPROM interface */ |
| 309 | |
| 310 | #define AX_MEMR EI_SHIFT(0x14) |
| 311 | #define AX_MEMR_MDC (1<<0) |
| 312 | #define AX_MEMR_MDIR (1<<1) |
| 313 | #define AX_MEMR_MDI (1<<2) |
| 314 | #define AX_MEMR_MDO (1<<3) |
| 315 | #define AX_MEMR_EECS (1<<4) |
| 316 | #define AX_MEMR_EEI (1<<5) |
| 317 | #define AX_MEMR_EEO (1<<6) |
| 318 | #define AX_MEMR_EECLK (1<<7) |
| 319 | |
| 320 | /* ax_mii_ei_outbits |
| 321 | * |
| 322 | * write the specified set of bits to the phy |
| 323 | */ |
| 324 | |
| 325 | static void |
| 326 | ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len) |
| 327 | { |
| 328 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 329 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; |
| 330 | unsigned int memr; |
| 331 | |
| 332 | /* clock low, data to output mode */ |
| 333 | memr = ei_inb(memr_addr); |
| 334 | memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR); |
| 335 | ei_outb(memr, memr_addr); |
| 336 | |
| 337 | for (len--; len >= 0; len--) { |
| 338 | if (bits & (1 << len)) |
| 339 | memr |= AX_MEMR_MDO; |
| 340 | else |
| 341 | memr &= ~AX_MEMR_MDO; |
| 342 | |
| 343 | ei_outb(memr, memr_addr); |
| 344 | |
| 345 | /* clock high */ |
| 346 | |
| 347 | ei_outb(memr | AX_MEMR_MDC, memr_addr); |
| 348 | udelay(1); |
| 349 | |
| 350 | /* clock low */ |
| 351 | ei_outb(memr, memr_addr); |
| 352 | } |
| 353 | |
| 354 | /* leaves the clock line low, mdir input */ |
| 355 | memr |= AX_MEMR_MDIR; |
| 356 | ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR); |
| 357 | } |
| 358 | |
| 359 | /* ax_phy_ei_inbits |
| 360 | * |
| 361 | * read a specified number of bits from the phy |
| 362 | */ |
| 363 | |
| 364 | static unsigned int |
| 365 | ax_phy_ei_inbits(struct net_device *dev, int no) |
| 366 | { |
| 367 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 368 | void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; |
| 369 | unsigned int memr; |
| 370 | unsigned int result = 0; |
| 371 | |
| 372 | /* clock low, data to input mode */ |
| 373 | memr = ei_inb(memr_addr); |
| 374 | memr &= ~AX_MEMR_MDC; |
| 375 | memr |= AX_MEMR_MDIR; |
| 376 | ei_outb(memr, memr_addr); |
| 377 | |
| 378 | for (no--; no >= 0; no--) { |
| 379 | ei_outb(memr | AX_MEMR_MDC, memr_addr); |
| 380 | |
| 381 | udelay(1); |
| 382 | |
| 383 | if (ei_inb(memr_addr) & AX_MEMR_MDI) |
| 384 | result |= (1<<no); |
| 385 | |
| 386 | ei_outb(memr, memr_addr); |
| 387 | } |
| 388 | |
| 389 | return result; |
| 390 | } |
| 391 | |
| 392 | /* ax_phy_issueaddr |
| 393 | * |
| 394 | * use the low level bit shifting routines to send the address |
| 395 | * and command to the specified phy |
| 396 | */ |
| 397 | |
| 398 | static void |
| 399 | ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc) |
| 400 | { |
| 401 | if (phy_debug) |
| 402 | pr_debug("%s: dev %p, %04x, %04x, %d\n", |
| 403 | __func__, dev, phy_addr, reg, opc); |
| 404 | |
| 405 | ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */ |
| 406 | ax_mii_ei_outbits(dev, 1, 2); /* frame-start */ |
| 407 | ax_mii_ei_outbits(dev, opc, 2); /* op code */ |
| 408 | ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */ |
| 409 | ax_mii_ei_outbits(dev, reg, 5); /* reg address */ |
| 410 | } |
| 411 | |
| 412 | static int |
| 413 | ax_phy_read(struct net_device *dev, int phy_addr, int reg) |
| 414 | { |
| 415 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 416 | unsigned long flags; |
| 417 | unsigned int result; |
| 418 | |
| 419 | spin_lock_irqsave(&ei_local->page_lock, flags); |
| 420 | |
| 421 | ax_phy_issueaddr(dev, phy_addr, reg, 2); |
| 422 | |
| 423 | result = ax_phy_ei_inbits(dev, 17); |
| 424 | result &= ~(3<<16); |
| 425 | |
| 426 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| 427 | |
| 428 | if (phy_debug) |
| 429 | pr_debug("%s: %04x.%04x => read %04x\n", __func__, |
| 430 | phy_addr, reg, result); |
| 431 | |
| 432 | return result; |
| 433 | } |
| 434 | |
| 435 | static void |
| 436 | ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value) |
| 437 | { |
| 438 | struct ei_device *ei = (struct ei_device *) netdev_priv(dev); |
| 439 | struct ax_device *ax = to_ax_dev(dev); |
| 440 | unsigned long flags; |
| 441 | |
| 442 | dev_dbg(&ax->dev->dev, "%s: %p, %04x, %04x %04x\n", |
| 443 | __func__, dev, phy_addr, reg, value); |
| 444 | |
| 445 | spin_lock_irqsave(&ei->page_lock, flags); |
| 446 | |
| 447 | ax_phy_issueaddr(dev, phy_addr, reg, 1); |
| 448 | ax_mii_ei_outbits(dev, 2, 2); /* send TA */ |
| 449 | ax_mii_ei_outbits(dev, value, 16); |
| 450 | |
| 451 | spin_unlock_irqrestore(&ei->page_lock, flags); |
| 452 | } |
| 453 | |
| 454 | static void ax_mii_expiry(unsigned long data) |
| 455 | { |
| 456 | struct net_device *dev = (struct net_device *)data; |
| 457 | struct ax_device *ax = to_ax_dev(dev); |
| 458 | unsigned long flags; |
| 459 | |
| 460 | spin_lock_irqsave(&ax->mii_lock, flags); |
| 461 | mii_check_media(&ax->mii, netif_msg_link(ax), 0); |
| 462 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
| 463 | |
| 464 | if (ax->running) { |
| 465 | ax->mii_timer.expires = jiffies + HZ*2; |
| 466 | add_timer(&ax->mii_timer); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | static int ax_open(struct net_device *dev) |
| 471 | { |
| 472 | struct ax_device *ax = to_ax_dev(dev); |
| 473 | struct ei_device *ei_local = netdev_priv(dev); |
| 474 | int ret; |
| 475 | |
| 476 | dev_dbg(&ax->dev->dev, "%s: open\n", dev->name); |
| 477 | |
| 478 | ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, |
| 479 | dev->name, dev); |
| 480 | if (ret) |
| 481 | return ret; |
| 482 | |
| 483 | ret = ax_ei_open(dev); |
| 484 | if (ret) |
| 485 | return ret; |
| 486 | |
| 487 | /* turn the phy on (if turned off) */ |
| 488 | |
| 489 | ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17)); |
| 490 | ax->running = 1; |
| 491 | |
| 492 | /* start the MII timer */ |
| 493 | |
| 494 | init_timer(&ax->mii_timer); |
| 495 | |
| 496 | ax->mii_timer.expires = jiffies+1; |
| 497 | ax->mii_timer.data = (unsigned long) dev; |
| 498 | ax->mii_timer.function = ax_mii_expiry; |
| 499 | |
| 500 | add_timer(&ax->mii_timer); |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | static int ax_close(struct net_device *dev) |
| 506 | { |
| 507 | struct ax_device *ax = to_ax_dev(dev); |
| 508 | struct ei_device *ei_local = netdev_priv(dev); |
| 509 | |
| 510 | dev_dbg(&ax->dev->dev, "%s: close\n", dev->name); |
| 511 | |
| 512 | /* turn the phy off */ |
| 513 | |
| 514 | ei_outb(ax->plat->gpoc_val | (1<<6), |
| 515 | ei_local->mem + EI_SHIFT(0x17)); |
| 516 | |
| 517 | ax->running = 0; |
| 518 | wmb(); |
| 519 | |
| 520 | del_timer_sync(&ax->mii_timer); |
| 521 | ax_ei_close(dev); |
| 522 | |
| 523 | free_irq(dev->irq, dev); |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) |
| 528 | { |
| 529 | struct ax_device *ax = to_ax_dev(dev); |
| 530 | unsigned long flags; |
| 531 | int rc; |
| 532 | |
| 533 | if (!netif_running(dev)) |
| 534 | return -EINVAL; |
| 535 | |
| 536 | spin_lock_irqsave(&ax->mii_lock, flags); |
| 537 | rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL); |
| 538 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
| 539 | |
| 540 | return rc; |
| 541 | } |
| 542 | |
| 543 | /* ethtool ops */ |
| 544 | |
| 545 | static void ax_get_drvinfo(struct net_device *dev, |
| 546 | struct ethtool_drvinfo *info) |
| 547 | { |
| 548 | struct ax_device *ax = to_ax_dev(dev); |
| 549 | |
| 550 | strcpy(info->driver, DRV_NAME); |
| 551 | strcpy(info->version, DRV_VERSION); |
| 552 | strcpy(info->bus_info, ax->dev->name); |
| 553 | } |
| 554 | |
| 555 | static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 556 | { |
| 557 | struct ax_device *ax = to_ax_dev(dev); |
| 558 | unsigned long flags; |
| 559 | |
| 560 | spin_lock_irqsave(&ax->mii_lock, flags); |
| 561 | mii_ethtool_gset(&ax->mii, cmd); |
| 562 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 568 | { |
| 569 | struct ax_device *ax = to_ax_dev(dev); |
| 570 | unsigned long flags; |
| 571 | int rc; |
| 572 | |
| 573 | spin_lock_irqsave(&ax->mii_lock, flags); |
| 574 | rc = mii_ethtool_sset(&ax->mii, cmd); |
| 575 | spin_unlock_irqrestore(&ax->mii_lock, flags); |
| 576 | |
| 577 | return rc; |
| 578 | } |
| 579 | |
| 580 | static int ax_nway_reset(struct net_device *dev) |
| 581 | { |
| 582 | struct ax_device *ax = to_ax_dev(dev); |
| 583 | return mii_nway_restart(&ax->mii); |
| 584 | } |
| 585 | |
| 586 | static u32 ax_get_link(struct net_device *dev) |
| 587 | { |
| 588 | struct ax_device *ax = to_ax_dev(dev); |
| 589 | return mii_link_ok(&ax->mii); |
| 590 | } |
| 591 | |
| 592 | static const struct ethtool_ops ax_ethtool_ops = { |
| 593 | .get_drvinfo = ax_get_drvinfo, |
| 594 | .get_settings = ax_get_settings, |
| 595 | .set_settings = ax_set_settings, |
| 596 | .nway_reset = ax_nway_reset, |
| 597 | .get_link = ax_get_link, |
| 598 | }; |
| 599 | |
| 600 | #ifdef CONFIG_AX88796_93CX6 |
| 601 | static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom) |
| 602 | { |
| 603 | struct ei_device *ei_local = eeprom->data; |
| 604 | u8 reg = ei_inb(ei_local->mem + AX_MEMR); |
| 605 | |
| 606 | eeprom->reg_data_in = reg & AX_MEMR_EEI; |
| 607 | eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */ |
| 608 | eeprom->reg_data_clock = reg & AX_MEMR_EECLK; |
| 609 | eeprom->reg_chip_select = reg & AX_MEMR_EECS; |
| 610 | } |
| 611 | |
| 612 | static void ax_eeprom_register_write(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 | reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS); |
| 618 | |
| 619 | if (eeprom->reg_data_in) |
| 620 | reg |= AX_MEMR_EEI; |
| 621 | if (eeprom->reg_data_clock) |
| 622 | reg |= AX_MEMR_EECLK; |
| 623 | if (eeprom->reg_chip_select) |
| 624 | reg |= AX_MEMR_EECS; |
| 625 | |
| 626 | ei_outb(reg, ei_local->mem + AX_MEMR); |
| 627 | udelay(10); |
| 628 | } |
| 629 | #endif |
| 630 | |
| 631 | static const struct net_device_ops ax_netdev_ops = { |
| 632 | .ndo_open = ax_open, |
| 633 | .ndo_stop = ax_close, |
| 634 | .ndo_do_ioctl = ax_ioctl, |
| 635 | |
| 636 | .ndo_start_xmit = ax_ei_start_xmit, |
| 637 | .ndo_tx_timeout = ax_ei_tx_timeout, |
| 638 | .ndo_get_stats = ax_ei_get_stats, |
| 639 | .ndo_set_multicast_list = ax_ei_set_multicast_list, |
| 640 | .ndo_validate_addr = eth_validate_addr, |
| 641 | .ndo_set_mac_address = eth_mac_addr, |
| 642 | .ndo_change_mtu = eth_change_mtu, |
| 643 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 644 | .ndo_poll_controller = ax_ei_poll, |
| 645 | #endif |
| 646 | }; |
| 647 | |
| 648 | /* setup code */ |
| 649 | |
| 650 | static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) |
| 651 | { |
| 652 | void __iomem *ioaddr = ei_local->mem; |
| 653 | struct ax_device *ax = to_ax_dev(dev); |
| 654 | |
| 655 | /* Select page 0*/ |
| 656 | ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD); |
| 657 | |
| 658 | /* set to byte access */ |
| 659 | ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); |
| 660 | ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); |
| 661 | } |
| 662 | |
| 663 | /* ax_init_dev |
| 664 | * |
| 665 | * initialise the specified device, taking care to note the MAC |
| 666 | * address it may already have (if configured), ensure |
| 667 | * the device is ready to be used by lib8390.c and registerd with |
| 668 | * the network layer. |
| 669 | */ |
| 670 | |
| 671 | static int ax_init_dev(struct net_device *dev, int first_init) |
| 672 | { |
| 673 | struct ei_device *ei_local = netdev_priv(dev); |
| 674 | struct ax_device *ax = to_ax_dev(dev); |
| 675 | void __iomem *ioaddr = ei_local->mem; |
| 676 | unsigned int start_page; |
| 677 | unsigned int stop_page; |
| 678 | int ret; |
| 679 | int i; |
| 680 | |
| 681 | ret = ax_initial_check(dev); |
| 682 | if (ret) |
| 683 | goto err_out; |
| 684 | |
| 685 | /* setup goes here */ |
| 686 | |
| 687 | ax_initial_setup(dev, ei_local); |
| 688 | |
| 689 | /* read the mac from the card prom if we need it */ |
| 690 | |
| 691 | if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) { |
| 692 | unsigned char SA_prom[32]; |
| 693 | |
| 694 | for(i = 0; i < sizeof(SA_prom); i+=2) { |
| 695 | SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); |
| 696 | SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT); |
| 697 | } |
| 698 | |
| 699 | if (ax->plat->wordlength == 2) |
| 700 | for (i = 0; i < 16; i++) |
| 701 | SA_prom[i] = SA_prom[i+i]; |
| 702 | |
| 703 | memcpy(dev->dev_addr, SA_prom, 6); |
| 704 | } |
| 705 | |
| 706 | #ifdef CONFIG_AX88796_93CX6 |
| 707 | if (first_init && ax->plat->flags & AXFLG_HAS_93CX6) { |
| 708 | unsigned char mac_addr[6]; |
| 709 | struct eeprom_93cx6 eeprom; |
| 710 | |
| 711 | eeprom.data = ei_local; |
| 712 | eeprom.register_read = ax_eeprom_register_read; |
| 713 | eeprom.register_write = ax_eeprom_register_write; |
| 714 | eeprom.width = PCI_EEPROM_WIDTH_93C56; |
| 715 | |
| 716 | eeprom_93cx6_multiread(&eeprom, 0, |
| 717 | (__le16 __force *)mac_addr, |
| 718 | sizeof(mac_addr) >> 1); |
| 719 | |
| 720 | memcpy(dev->dev_addr, mac_addr, 6); |
| 721 | } |
| 722 | #endif |
| 723 | if (ax->plat->wordlength == 2) { |
| 724 | /* We must set the 8390 for word mode. */ |
| 725 | ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG); |
| 726 | start_page = NESM_START_PG; |
| 727 | stop_page = NESM_STOP_PG; |
| 728 | } else { |
| 729 | start_page = NE1SM_START_PG; |
| 730 | stop_page = NE1SM_STOP_PG; |
| 731 | } |
| 732 | |
| 733 | /* load the mac-address from the device if this is the |
| 734 | * first time we've initialised */ |
| 735 | |
| 736 | if (first_init) { |
| 737 | if (ax->plat->flags & AXFLG_MAC_FROMDEV) { |
| 738 | ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, |
| 739 | ei_local->mem + E8390_CMD); /* 0x61 */ |
| 740 | for (i = 0; i < ETHER_ADDR_LEN; i++) |
| 741 | dev->dev_addr[i] = |
| 742 | ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); |
| 743 | } |
| 744 | |
| 745 | if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && |
| 746 | ax->plat->mac_addr) |
| 747 | memcpy(dev->dev_addr, ax->plat->mac_addr, |
| 748 | ETHER_ADDR_LEN); |
| 749 | } |
| 750 | |
| 751 | ax_reset_8390(dev); |
| 752 | |
| 753 | ei_status.name = "AX88796"; |
| 754 | ei_status.tx_start_page = start_page; |
| 755 | ei_status.stop_page = stop_page; |
| 756 | ei_status.word16 = (ax->plat->wordlength == 2); |
| 757 | ei_status.rx_start_page = start_page + TX_PAGES; |
| 758 | |
| 759 | #ifdef PACKETBUF_MEMSIZE |
| 760 | /* Allow the packet buffer size to be overridden by know-it-alls. */ |
| 761 | ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; |
| 762 | #endif |
| 763 | |
| 764 | ei_status.reset_8390 = &ax_reset_8390; |
| 765 | ei_status.block_input = &ax_block_input; |
| 766 | ei_status.block_output = &ax_block_output; |
| 767 | ei_status.get_8390_hdr = &ax_get_8390_hdr; |
| 768 | ei_status.priv = 0; |
| 769 | |
| 770 | dev->netdev_ops = &ax_netdev_ops; |
| 771 | dev->ethtool_ops = &ax_ethtool_ops; |
| 772 | |
| 773 | ax->msg_enable = NETIF_MSG_LINK; |
| 774 | ax->mii.phy_id_mask = 0x1f; |
| 775 | ax->mii.reg_num_mask = 0x1f; |
| 776 | ax->mii.phy_id = 0x10; /* onboard phy */ |
| 777 | ax->mii.force_media = 0; |
| 778 | ax->mii.full_duplex = 0; |
| 779 | ax->mii.mdio_read = ax_phy_read; |
| 780 | ax->mii.mdio_write = ax_phy_write; |
| 781 | ax->mii.dev = dev; |
| 782 | |
| 783 | ax_NS8390_init(dev, 0); |
| 784 | |
| 785 | if (first_init) |
| 786 | dev_info(&ax->dev->dev, "%dbit, irq %d, %lx, MAC: %pM\n", |
| 787 | ei_status.word16 ? 16:8, dev->irq, dev->base_addr, |
| 788 | dev->dev_addr); |
| 789 | |
| 790 | ret = register_netdev(dev); |
| 791 | if (ret) |
| 792 | goto out_irq; |
| 793 | |
| 794 | return 0; |
| 795 | |
| 796 | out_irq: |
| 797 | /* cleanup irq */ |
| 798 | free_irq(dev->irq, dev); |
| 799 | err_out: |
| 800 | return ret; |
| 801 | } |
| 802 | |
| 803 | static int ax_remove(struct platform_device *_dev) |
| 804 | { |
| 805 | struct net_device *dev = platform_get_drvdata(_dev); |
| 806 | struct ax_device *ax; |
| 807 | |
| 808 | ax = to_ax_dev(dev); |
| 809 | |
| 810 | unregister_netdev(dev); |
| 811 | free_irq(dev->irq, dev); |
| 812 | |
| 813 | iounmap(ei_status.mem); |
| 814 | release_resource(ax->mem); |
| 815 | kfree(ax->mem); |
| 816 | |
| 817 | if (ax->map2) { |
| 818 | iounmap(ax->map2); |
| 819 | release_resource(ax->mem2); |
| 820 | kfree(ax->mem2); |
| 821 | } |
| 822 | |
| 823 | free_netdev(dev); |
| 824 | |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | /* ax_probe |
| 829 | * |
| 830 | * This is the entry point when the platform device system uses to |
| 831 | * notify us of a new device to attach to. Allocate memory, find |
| 832 | * the resources and information passed, and map the necessary registers. |
| 833 | */ |
| 834 | |
| 835 | static int ax_probe(struct platform_device *pdev) |
| 836 | { |
| 837 | struct net_device *dev; |
| 838 | struct ax_device *ax; |
| 839 | struct resource *res; |
| 840 | size_t size; |
| 841 | int ret = 0; |
| 842 | |
| 843 | dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); |
| 844 | if (dev == NULL) |
| 845 | return -ENOMEM; |
| 846 | |
| 847 | /* ok, let's setup our device */ |
| 848 | ax = to_ax_dev(dev); |
| 849 | |
| 850 | memset(ax, 0, sizeof(struct ax_device)); |
| 851 | |
| 852 | spin_lock_init(&ax->mii_lock); |
| 853 | |
| 854 | ax->dev = pdev; |
| 855 | ax->plat = pdev->dev.platform_data; |
| 856 | platform_set_drvdata(pdev, dev); |
| 857 | |
| 858 | ei_status.rxcr_base = ax->plat->rcr_val; |
| 859 | |
| 860 | /* find the platform resources */ |
| 861 | |
| 862 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 863 | if (res == NULL) { |
| 864 | dev_err(&pdev->dev, "no IRQ specified\n"); |
| 865 | goto exit_mem; |
| 866 | } |
| 867 | |
| 868 | dev->irq = res->start; |
| 869 | ax->irqflags = res->flags & IRQF_TRIGGER_MASK; |
| 870 | |
| 871 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 872 | if (res == NULL) { |
| 873 | dev_err(&pdev->dev, "no MEM specified\n"); |
| 874 | ret = -ENXIO; |
| 875 | goto exit_mem; |
| 876 | } |
| 877 | |
| 878 | size = (res->end - res->start) + 1; |
| 879 | |
| 880 | /* setup the register offsets from either the platform data |
| 881 | * or by using the size of the resource provided */ |
| 882 | |
| 883 | if (ax->plat->reg_offsets) |
| 884 | ei_status.reg_offset = ax->plat->reg_offsets; |
| 885 | else { |
| 886 | ei_status.reg_offset = ax->reg_offsets; |
| 887 | for (ret = 0; ret < 0x18; ret++) |
| 888 | ax->reg_offsets[ret] = (size / 0x18) * ret; |
| 889 | } |
| 890 | |
| 891 | ax->mem = request_mem_region(res->start, size, pdev->name); |
| 892 | if (ax->mem == NULL) { |
| 893 | dev_err(&pdev->dev, "cannot reserve registers\n"); |
| 894 | ret = -ENXIO; |
| 895 | goto exit_mem; |
| 896 | } |
| 897 | |
| 898 | ei_status.mem = ioremap(res->start, size); |
| 899 | dev->base_addr = (unsigned long)ei_status.mem; |
| 900 | |
| 901 | if (ei_status.mem == NULL) { |
| 902 | dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n", |
| 903 | (unsigned long long)res->start, |
| 904 | (unsigned long long)res->end); |
| 905 | |
| 906 | ret = -ENXIO; |
| 907 | goto exit_req; |
| 908 | } |
| 909 | |
| 910 | /* look for reset area */ |
| 911 | |
| 912 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 913 | if (res == NULL) { |
| 914 | if (!ax->plat->reg_offsets) { |
| 915 | for (ret = 0; ret < 0x20; ret++) |
| 916 | ax->reg_offsets[ret] = (size / 0x20) * ret; |
| 917 | } |
| 918 | |
| 919 | ax->map2 = NULL; |
| 920 | } else { |
| 921 | size = (res->end - res->start) + 1; |
| 922 | |
| 923 | ax->mem2 = request_mem_region(res->start, size, pdev->name); |
| 924 | if (ax->mem == NULL) { |
| 925 | dev_err(&pdev->dev, "cannot reserve registers\n"); |
| 926 | ret = -ENXIO; |
| 927 | goto exit_mem1; |
| 928 | } |
| 929 | |
| 930 | ax->map2 = ioremap(res->start, size); |
| 931 | if (ax->map2 == NULL) { |
| 932 | dev_err(&pdev->dev, "cannot map reset register\n"); |
| 933 | ret = -ENXIO; |
| 934 | goto exit_mem2; |
| 935 | } |
| 936 | |
| 937 | ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem; |
| 938 | } |
| 939 | |
| 940 | /* got resources, now initialise and register device */ |
| 941 | |
| 942 | ret = ax_init_dev(dev, 1); |
| 943 | if (!ret) |
| 944 | return 0; |
| 945 | |
| 946 | if (ax->map2 == NULL) |
| 947 | goto exit_mem1; |
| 948 | |
| 949 | iounmap(ax->map2); |
| 950 | |
| 951 | exit_mem2: |
| 952 | release_resource(ax->mem2); |
| 953 | kfree(ax->mem2); |
| 954 | |
| 955 | exit_mem1: |
| 956 | iounmap(ei_status.mem); |
| 957 | |
| 958 | exit_req: |
| 959 | release_resource(ax->mem); |
| 960 | kfree(ax->mem); |
| 961 | |
| 962 | exit_mem: |
| 963 | free_netdev(dev); |
| 964 | |
| 965 | return ret; |
| 966 | } |
| 967 | |
| 968 | /* suspend and resume */ |
| 969 | |
| 970 | #ifdef CONFIG_PM |
| 971 | static int ax_suspend(struct platform_device *dev, pm_message_t state) |
| 972 | { |
| 973 | struct net_device *ndev = platform_get_drvdata(dev); |
| 974 | struct ax_device *ax = to_ax_dev(ndev); |
| 975 | |
| 976 | ax->resume_open = ax->running; |
| 977 | |
| 978 | netif_device_detach(ndev); |
| 979 | ax_close(ndev); |
| 980 | |
| 981 | return 0; |
| 982 | } |
| 983 | |
| 984 | static int ax_resume(struct platform_device *pdev) |
| 985 | { |
| 986 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 987 | struct ax_device *ax = to_ax_dev(ndev); |
| 988 | |
| 989 | ax_initial_setup(ndev, netdev_priv(ndev)); |
| 990 | ax_NS8390_init(ndev, ax->resume_open); |
| 991 | netif_device_attach(ndev); |
| 992 | |
| 993 | if (ax->resume_open) |
| 994 | ax_open(ndev); |
| 995 | |
| 996 | return 0; |
| 997 | } |
| 998 | |
| 999 | #else |
| 1000 | #define ax_suspend NULL |
| 1001 | #define ax_resume NULL |
| 1002 | #endif |
| 1003 | |
| 1004 | static struct platform_driver axdrv = { |
| 1005 | .driver = { |
| 1006 | .name = "ax88796", |
| 1007 | .owner = THIS_MODULE, |
| 1008 | }, |
| 1009 | .probe = ax_probe, |
| 1010 | .remove = ax_remove, |
| 1011 | .suspend = ax_suspend, |
| 1012 | .resume = ax_resume, |
| 1013 | }; |
| 1014 | |
| 1015 | static int __init axdrv_init(void) |
| 1016 | { |
| 1017 | return platform_driver_register(&axdrv); |
| 1018 | } |
| 1019 | |
| 1020 | static void __exit axdrv_exit(void) |
| 1021 | { |
| 1022 | platform_driver_unregister(&axdrv); |
| 1023 | } |
| 1024 | |
| 1025 | module_init(axdrv_init); |
| 1026 | module_exit(axdrv_exit); |
| 1027 | |
| 1028 | MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); |
| 1029 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); |
| 1030 | MODULE_LICENSE("GPL v2"); |
| 1031 | MODULE_ALIAS("platform:ax88796"); |