| 1 | /* smc-ultra.c: A SMC Ultra ethernet driver for linux. */ |
| 2 | /* |
| 3 | This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards. |
| 4 | |
| 5 | Written 1993-1998 by Donald Becker. |
| 6 | |
| 7 | Copyright 1993 United States Government as represented by the |
| 8 | Director, National Security Agency. |
| 9 | |
| 10 | This software may be used and distributed according to the terms |
| 11 | of the GNU General Public License, incorporated herein by reference. |
| 12 | |
| 13 | The author may be reached as becker@scyld.com, or C/O |
| 14 | Scyld Computing Corporation |
| 15 | 410 Severn Ave., Suite 210 |
| 16 | Annapolis MD 21403 |
| 17 | |
| 18 | This driver uses the cards in the 8390-compatible mode. |
| 19 | Most of the run-time complexity is handled by the generic code in |
| 20 | 8390.c. The code in this file is responsible for |
| 21 | |
| 22 | ultra_probe() Detecting and initializing the card. |
| 23 | ultra_probe1() |
| 24 | ultra_probe_isapnp() |
| 25 | |
| 26 | ultra_open() The card-specific details of starting, stopping |
| 27 | ultra_reset_8390() and resetting the 8390 NIC core. |
| 28 | ultra_close() |
| 29 | |
| 30 | ultra_block_input() Routines for reading and writing blocks of |
| 31 | ultra_block_output() packet buffer memory. |
| 32 | ultra_pio_input() |
| 33 | ultra_pio_output() |
| 34 | |
| 35 | This driver enables the shared memory only when doing the actual data |
| 36 | transfers to avoid a bug in early version of the card that corrupted |
| 37 | data transferred by a AHA1542. |
| 38 | |
| 39 | This driver now supports the programmed-I/O (PIO) data transfer mode of |
| 40 | the EtherEZ. It does not use the non-8390-compatible "Altego" mode. |
| 41 | That support (if available) is in smc-ez.c. |
| 42 | |
| 43 | Changelog: |
| 44 | |
| 45 | Paul Gortmaker : multiple card support for module users. |
| 46 | Donald Becker : 4/17/96 PIO support, minor potential problems avoided. |
| 47 | Donald Becker : 6/6/96 correctly set auto-wrap bit. |
| 48 | Alexander Sotirov : 1/20/01 Added support for ISAPnP cards |
| 49 | |
| 50 | Note about the ISA PnP support: |
| 51 | |
| 52 | This driver can not autoprobe for more than one SMC EtherEZ PnP card. |
| 53 | You have to configure the second card manually through the /proc/isapnp |
| 54 | interface and then load the module with an explicit io=0x___ option. |
| 55 | */ |
| 56 | |
| 57 | static const char version[] = |
| 58 | "smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; |
| 59 | |
| 60 | #include <linux/module.h> |
| 61 | #include <linux/kernel.h> |
| 62 | #include <linux/errno.h> |
| 63 | #include <linux/string.h> |
| 64 | #include <linux/init.h> |
| 65 | #include <linux/isapnp.h> |
| 66 | #include <linux/netdevice.h> |
| 67 | #include <linux/etherdevice.h> |
| 68 | |
| 69 | #include <asm/io.h> |
| 70 | #include <asm/irq.h> |
| 71 | #include <asm/system.h> |
| 72 | |
| 73 | #include "8390.h" |
| 74 | |
| 75 | #define DRV_NAME "smc-ultra" |
| 76 | |
| 77 | /* A zero-terminated list of I/O addresses to be probed. */ |
| 78 | static unsigned int ultra_portlist[] __initdata = |
| 79 | {0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0}; |
| 80 | |
| 81 | static int ultra_probe1(struct net_device *dev, int ioaddr); |
| 82 | |
| 83 | #ifdef __ISAPNP__ |
| 84 | static int ultra_probe_isapnp(struct net_device *dev); |
| 85 | #endif |
| 86 | |
| 87 | static int ultra_open(struct net_device *dev); |
| 88 | static void ultra_reset_8390(struct net_device *dev); |
| 89 | static void ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
| 90 | int ring_page); |
| 91 | static void ultra_block_input(struct net_device *dev, int count, |
| 92 | struct sk_buff *skb, int ring_offset); |
| 93 | static void ultra_block_output(struct net_device *dev, int count, |
| 94 | const unsigned char *buf, const int start_page); |
| 95 | static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
| 96 | int ring_page); |
| 97 | static void ultra_pio_input(struct net_device *dev, int count, |
| 98 | struct sk_buff *skb, int ring_offset); |
| 99 | static void ultra_pio_output(struct net_device *dev, int count, |
| 100 | const unsigned char *buf, const int start_page); |
| 101 | static int ultra_close_card(struct net_device *dev); |
| 102 | |
| 103 | #ifdef __ISAPNP__ |
| 104 | static struct isapnp_device_id ultra_device_ids[] __initdata = { |
| 105 | { ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416), |
| 106 | ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416), |
| 107 | (long) "SMC EtherEZ (8416)" }, |
| 108 | { } /* terminate list */ |
| 109 | }; |
| 110 | |
| 111 | MODULE_DEVICE_TABLE(isapnp, ultra_device_ids); |
| 112 | #endif |
| 113 | |
| 114 | |
| 115 | #define START_PG 0x00 /* First page of TX buffer */ |
| 116 | |
| 117 | #define ULTRA_CMDREG 0 /* Offset to ASIC command register. */ |
| 118 | #define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */ |
| 119 | #define ULTRA_MEMENB 0x40 /* Enable the shared memory. */ |
| 120 | #define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */ |
| 121 | #define IOPA 0x07 /* I/O Pipe Address for PIO operation. */ |
| 122 | #define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */ |
| 123 | #define ULTRA_IO_EXTENT 32 |
| 124 | #define EN0_ERWCNT 0x08 /* Early receive warning count. */ |
| 125 | |
| 126 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 127 | static void ultra_poll(struct net_device *dev) |
| 128 | { |
| 129 | disable_irq(dev->irq); |
| 130 | ei_interrupt(dev->irq, dev); |
| 131 | enable_irq(dev->irq); |
| 132 | } |
| 133 | #endif |
| 134 | /* Probe for the Ultra. This looks like a 8013 with the station |
| 135 | address PROM at I/O ports <base>+8 to <base>+13, with a checksum |
| 136 | following. |
| 137 | */ |
| 138 | |
| 139 | static int __init do_ultra_probe(struct net_device *dev) |
| 140 | { |
| 141 | int i; |
| 142 | int base_addr = dev->base_addr; |
| 143 | int irq = dev->irq; |
| 144 | |
| 145 | if (base_addr > 0x1ff) /* Check a single specified location. */ |
| 146 | return ultra_probe1(dev, base_addr); |
| 147 | else if (base_addr != 0) /* Don't probe at all. */ |
| 148 | return -ENXIO; |
| 149 | |
| 150 | #ifdef __ISAPNP__ |
| 151 | /* Look for any installed ISAPnP cards */ |
| 152 | if (isapnp_present() && (ultra_probe_isapnp(dev) == 0)) |
| 153 | return 0; |
| 154 | #endif |
| 155 | |
| 156 | for (i = 0; ultra_portlist[i]; i++) { |
| 157 | dev->irq = irq; |
| 158 | if (ultra_probe1(dev, ultra_portlist[i]) == 0) |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | return -ENODEV; |
| 163 | } |
| 164 | |
| 165 | #ifndef MODULE |
| 166 | struct net_device * __init ultra_probe(int unit) |
| 167 | { |
| 168 | struct net_device *dev = alloc_ei_netdev(); |
| 169 | int err; |
| 170 | |
| 171 | if (!dev) |
| 172 | return ERR_PTR(-ENOMEM); |
| 173 | |
| 174 | sprintf(dev->name, "eth%d", unit); |
| 175 | netdev_boot_setup_check(dev); |
| 176 | |
| 177 | err = do_ultra_probe(dev); |
| 178 | if (err) |
| 179 | goto out; |
| 180 | return dev; |
| 181 | out: |
| 182 | free_netdev(dev); |
| 183 | return ERR_PTR(err); |
| 184 | } |
| 185 | #endif |
| 186 | |
| 187 | static const struct net_device_ops ultra_netdev_ops = { |
| 188 | .ndo_open = ultra_open, |
| 189 | .ndo_stop = ultra_close_card, |
| 190 | |
| 191 | .ndo_start_xmit = ei_start_xmit, |
| 192 | .ndo_tx_timeout = ei_tx_timeout, |
| 193 | .ndo_get_stats = ei_get_stats, |
| 194 | .ndo_set_multicast_list = ei_set_multicast_list, |
| 195 | .ndo_validate_addr = eth_validate_addr, |
| 196 | .ndo_set_mac_address = eth_mac_addr, |
| 197 | .ndo_change_mtu = eth_change_mtu, |
| 198 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 199 | .ndo_poll_controller = ultra_poll, |
| 200 | #endif |
| 201 | }; |
| 202 | |
| 203 | static int __init ultra_probe1(struct net_device *dev, int ioaddr) |
| 204 | { |
| 205 | int i, retval; |
| 206 | int checksum = 0; |
| 207 | const char *model_name; |
| 208 | unsigned char eeprom_irq = 0; |
| 209 | static unsigned version_printed; |
| 210 | /* Values from various config regs. */ |
| 211 | unsigned char num_pages, irqreg, addr, piomode; |
| 212 | unsigned char idreg = inb(ioaddr + 7); |
| 213 | unsigned char reg4 = inb(ioaddr + 4) & 0x7f; |
| 214 | |
| 215 | if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) |
| 216 | return -EBUSY; |
| 217 | |
| 218 | /* Check the ID nibble. */ |
| 219 | if ((idreg & 0xF0) != 0x20 /* SMC Ultra */ |
| 220 | && (idreg & 0xF0) != 0x40) { /* SMC EtherEZ */ |
| 221 | retval = -ENODEV; |
| 222 | goto out; |
| 223 | } |
| 224 | |
| 225 | /* Select the station address register set. */ |
| 226 | outb(reg4, ioaddr + 4); |
| 227 | |
| 228 | for (i = 0; i < 8; i++) |
| 229 | checksum += inb(ioaddr + 8 + i); |
| 230 | if ((checksum & 0xff) != 0xFF) { |
| 231 | retval = -ENODEV; |
| 232 | goto out; |
| 233 | } |
| 234 | |
| 235 | if (ei_debug && version_printed++ == 0) |
| 236 | printk(version); |
| 237 | |
| 238 | model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ"; |
| 239 | |
| 240 | for (i = 0; i < 6; i++) |
| 241 | dev->dev_addr[i] = inb(ioaddr + 8 + i); |
| 242 | |
| 243 | printk("%s: %s at %#3x, %pM", dev->name, model_name, |
| 244 | ioaddr, dev->dev_addr); |
| 245 | |
| 246 | /* Switch from the station address to the alternate register set and |
| 247 | read the useful registers there. */ |
| 248 | outb(0x80 | reg4, ioaddr + 4); |
| 249 | |
| 250 | /* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */ |
| 251 | outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c); |
| 252 | piomode = inb(ioaddr + 0x8); |
| 253 | addr = inb(ioaddr + 0xb); |
| 254 | irqreg = inb(ioaddr + 0xd); |
| 255 | |
| 256 | /* Switch back to the station address register set so that the MS-DOS driver |
| 257 | can find the card after a warm boot. */ |
| 258 | outb(reg4, ioaddr + 4); |
| 259 | |
| 260 | if (dev->irq < 2) { |
| 261 | unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15}; |
| 262 | int irq; |
| 263 | |
| 264 | /* The IRQ bits are split. */ |
| 265 | irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)]; |
| 266 | |
| 267 | if (irq == 0) { |
| 268 | printk(", failed to detect IRQ line.\n"); |
| 269 | retval = -EAGAIN; |
| 270 | goto out; |
| 271 | } |
| 272 | dev->irq = irq; |
| 273 | eeprom_irq = 1; |
| 274 | } |
| 275 | |
| 276 | /* The 8390 isn't at the base address, so fake the offset */ |
| 277 | dev->base_addr = ioaddr+ULTRA_NIC_OFFSET; |
| 278 | |
| 279 | { |
| 280 | int addr_tbl[4] = {0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000}; |
| 281 | short num_pages_tbl[4] = {0x20, 0x40, 0x80, 0xff}; |
| 282 | |
| 283 | dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ; |
| 284 | num_pages = num_pages_tbl[(addr >> 4) & 3]; |
| 285 | } |
| 286 | |
| 287 | ei_status.name = model_name; |
| 288 | ei_status.word16 = 1; |
| 289 | ei_status.tx_start_page = START_PG; |
| 290 | ei_status.rx_start_page = START_PG + TX_PAGES; |
| 291 | ei_status.stop_page = num_pages; |
| 292 | |
| 293 | ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256); |
| 294 | if (!ei_status.mem) { |
| 295 | printk(", failed to ioremap.\n"); |
| 296 | retval = -ENOMEM; |
| 297 | goto out; |
| 298 | } |
| 299 | |
| 300 | dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256; |
| 301 | |
| 302 | if (piomode) { |
| 303 | printk(",%s IRQ %d programmed-I/O mode.\n", |
| 304 | eeprom_irq ? "EEPROM" : "assigned ", dev->irq); |
| 305 | ei_status.block_input = &ultra_pio_input; |
| 306 | ei_status.block_output = &ultra_pio_output; |
| 307 | ei_status.get_8390_hdr = &ultra_pio_get_hdr; |
| 308 | } else { |
| 309 | printk(",%s IRQ %d memory %#lx-%#lx.\n", eeprom_irq ? "" : "assigned ", |
| 310 | dev->irq, dev->mem_start, dev->mem_end-1); |
| 311 | ei_status.block_input = &ultra_block_input; |
| 312 | ei_status.block_output = &ultra_block_output; |
| 313 | ei_status.get_8390_hdr = &ultra_get_8390_hdr; |
| 314 | } |
| 315 | ei_status.reset_8390 = &ultra_reset_8390; |
| 316 | |
| 317 | dev->netdev_ops = &ultra_netdev_ops; |
| 318 | NS8390_init(dev, 0); |
| 319 | |
| 320 | retval = register_netdev(dev); |
| 321 | if (retval) |
| 322 | goto out; |
| 323 | return 0; |
| 324 | out: |
| 325 | release_region(ioaddr, ULTRA_IO_EXTENT); |
| 326 | return retval; |
| 327 | } |
| 328 | |
| 329 | #ifdef __ISAPNP__ |
| 330 | static int __init ultra_probe_isapnp(struct net_device *dev) |
| 331 | { |
| 332 | int i; |
| 333 | |
| 334 | for (i = 0; ultra_device_ids[i].vendor != 0; i++) { |
| 335 | struct pnp_dev *idev = NULL; |
| 336 | |
| 337 | while ((idev = pnp_find_dev(NULL, |
| 338 | ultra_device_ids[i].vendor, |
| 339 | ultra_device_ids[i].function, |
| 340 | idev))) { |
| 341 | /* Avoid already found cards from previous calls */ |
| 342 | if (pnp_device_attach(idev) < 0) |
| 343 | continue; |
| 344 | if (pnp_activate_dev(idev) < 0) { |
| 345 | __again: |
| 346 | pnp_device_detach(idev); |
| 347 | continue; |
| 348 | } |
| 349 | /* if no io and irq, search for next */ |
| 350 | if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) |
| 351 | goto __again; |
| 352 | /* found it */ |
| 353 | dev->base_addr = pnp_port_start(idev, 0); |
| 354 | dev->irq = pnp_irq(idev, 0); |
| 355 | printk(KERN_INFO "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", |
| 356 | (char *) ultra_device_ids[i].driver_data, |
| 357 | dev->base_addr, dev->irq); |
| 358 | if (ultra_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ |
| 359 | printk(KERN_ERR "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr); |
| 360 | pnp_device_detach(idev); |
| 361 | return -ENXIO; |
| 362 | } |
| 363 | ei_status.priv = (unsigned long)idev; |
| 364 | break; |
| 365 | } |
| 366 | if (!idev) |
| 367 | continue; |
| 368 | return 0; |
| 369 | } |
| 370 | |
| 371 | return -ENODEV; |
| 372 | } |
| 373 | #endif |
| 374 | |
| 375 | static int |
| 376 | ultra_open(struct net_device *dev) |
| 377 | { |
| 378 | int retval; |
| 379 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
| 380 | unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40, |
| 381 | 0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, }; |
| 382 | |
| 383 | retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev); |
| 384 | if (retval) |
| 385 | return retval; |
| 386 | |
| 387 | outb(0x00, ioaddr); /* Disable shared memory for safety. */ |
| 388 | outb(0x80, ioaddr + 5); |
| 389 | /* Set the IRQ line. */ |
| 390 | outb(inb(ioaddr + 4) | 0x80, ioaddr + 4); |
| 391 | outb((inb(ioaddr + 13) & ~0x4C) | irq2reg[dev->irq], ioaddr + 13); |
| 392 | outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4); |
| 393 | |
| 394 | if (ei_status.block_input == &ultra_pio_input) { |
| 395 | outb(0x11, ioaddr + 6); /* Enable interrupts and PIO. */ |
| 396 | outb(0x01, ioaddr + 0x19); /* Enable ring read auto-wrap. */ |
| 397 | } else |
| 398 | outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */ |
| 399 | /* Set the early receive warning level in window 0 high enough not |
| 400 | to receive ERW interrupts. */ |
| 401 | outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr); |
| 402 | outb(0xff, dev->base_addr + EN0_ERWCNT); |
| 403 | ei_open(dev); |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | static void |
| 408 | ultra_reset_8390(struct net_device *dev) |
| 409 | { |
| 410 | int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */ |
| 411 | |
| 412 | outb(ULTRA_RESET, cmd_port); |
| 413 | if (ei_debug > 1) printk("resetting Ultra, t=%ld...", jiffies); |
| 414 | ei_status.txing = 0; |
| 415 | |
| 416 | outb(0x00, cmd_port); /* Disable shared memory for safety. */ |
| 417 | outb(0x80, cmd_port + 5); |
| 418 | if (ei_status.block_input == &ultra_pio_input) |
| 419 | outb(0x11, cmd_port + 6); /* Enable interrupts and PIO. */ |
| 420 | else |
| 421 | outb(0x01, cmd_port + 6); /* Enable interrupts and memory. */ |
| 422 | |
| 423 | if (ei_debug > 1) printk("reset done\n"); |
| 424 | return; |
| 425 | } |
| 426 | |
| 427 | /* Grab the 8390 specific header. Similar to the block_input routine, but |
| 428 | we don't need to be concerned with ring wrap as the header will be at |
| 429 | the start of a page, so we optimize accordingly. */ |
| 430 | |
| 431 | static void |
| 432 | ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) |
| 433 | { |
| 434 | void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8); |
| 435 | |
| 436 | outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */ |
| 437 | #ifdef __BIG_ENDIAN |
| 438 | /* Officially this is what we are doing, but the readl() is faster */ |
| 439 | /* unfortunately it isn't endian aware of the struct */ |
| 440 | memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); |
| 441 | hdr->count = le16_to_cpu(hdr->count); |
| 442 | #else |
| 443 | ((unsigned int*)hdr)[0] = readl(hdr_start); |
| 444 | #endif |
| 445 | outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */ |
| 446 | } |
| 447 | |
| 448 | /* Block input and output are easy on shared memory ethercards, the only |
| 449 | complication is when the ring buffer wraps. */ |
| 450 | |
| 451 | static void |
| 452 | ultra_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
| 453 | { |
| 454 | void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8); |
| 455 | |
| 456 | /* Enable shared memory. */ |
| 457 | outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); |
| 458 | |
| 459 | if (ring_offset + count > ei_status.stop_page*256) { |
| 460 | /* We must wrap the input move. */ |
| 461 | int semi_count = ei_status.stop_page*256 - ring_offset; |
| 462 | memcpy_fromio(skb->data, xfer_start, semi_count); |
| 463 | count -= semi_count; |
| 464 | memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count); |
| 465 | } else { |
| 466 | memcpy_fromio(skb->data, xfer_start, count); |
| 467 | } |
| 468 | |
| 469 | outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */ |
| 470 | } |
| 471 | |
| 472 | static void |
| 473 | ultra_block_output(struct net_device *dev, int count, const unsigned char *buf, |
| 474 | int start_page) |
| 475 | { |
| 476 | void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8); |
| 477 | |
| 478 | /* Enable shared memory. */ |
| 479 | outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); |
| 480 | |
| 481 | memcpy_toio(shmem, buf, count); |
| 482 | |
| 483 | outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */ |
| 484 | } |
| 485 | |
| 486 | /* The identical operations for programmed I/O cards. |
| 487 | The PIO model is trivial to use: the 16 bit start address is written |
| 488 | byte-sequentially to IOPA, with no intervening I/O operations, and the |
| 489 | data is read or written to the IOPD data port. |
| 490 | The only potential complication is that the address register is shared |
| 491 | and must be always be rewritten between each read/write direction change. |
| 492 | This is no problem for us, as the 8390 code ensures that we are single |
| 493 | threaded. */ |
| 494 | static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, |
| 495 | int ring_page) |
| 496 | { |
| 497 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
| 498 | outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */ |
| 499 | outb(ring_page, ioaddr + IOPA); |
| 500 | insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1); |
| 501 | } |
| 502 | |
| 503 | static void ultra_pio_input(struct net_device *dev, int count, |
| 504 | struct sk_buff *skb, int ring_offset) |
| 505 | { |
| 506 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
| 507 | char *buf = skb->data; |
| 508 | |
| 509 | /* For now set the address again, although it should already be correct. */ |
| 510 | outb(ring_offset, ioaddr + IOPA); /* Set the address, LSB first. */ |
| 511 | outb(ring_offset >> 8, ioaddr + IOPA); |
| 512 | /* We know skbuffs are padded to at least word alignment. */ |
| 513 | insw(ioaddr + IOPD, buf, (count+1)>>1); |
| 514 | } |
| 515 | |
| 516 | static void ultra_pio_output(struct net_device *dev, int count, |
| 517 | const unsigned char *buf, const int start_page) |
| 518 | { |
| 519 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ |
| 520 | outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */ |
| 521 | outb(start_page, ioaddr + IOPA); |
| 522 | /* An extra odd byte is OK here as well. */ |
| 523 | outsw(ioaddr + IOPD, buf, (count+1)>>1); |
| 524 | } |
| 525 | |
| 526 | static int |
| 527 | ultra_close_card(struct net_device *dev) |
| 528 | { |
| 529 | int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */ |
| 530 | |
| 531 | netif_stop_queue(dev); |
| 532 | |
| 533 | if (ei_debug > 1) |
| 534 | printk("%s: Shutting down ethercard.\n", dev->name); |
| 535 | |
| 536 | outb(0x00, ioaddr + 6); /* Disable interrupts. */ |
| 537 | free_irq(dev->irq, dev); |
| 538 | |
| 539 | NS8390_init(dev, 0); |
| 540 | |
| 541 | /* We should someday disable shared memory and change to 8-bit mode |
| 542 | "just in case"... */ |
| 543 | |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | |
| 548 | #ifdef MODULE |
| 549 | #define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */ |
| 550 | static struct net_device *dev_ultra[MAX_ULTRA_CARDS]; |
| 551 | static int io[MAX_ULTRA_CARDS]; |
| 552 | static int irq[MAX_ULTRA_CARDS]; |
| 553 | |
| 554 | module_param_array(io, int, NULL, 0); |
| 555 | module_param_array(irq, int, NULL, 0); |
| 556 | MODULE_PARM_DESC(io, "I/O base address(es)"); |
| 557 | MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)"); |
| 558 | MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver"); |
| 559 | MODULE_LICENSE("GPL"); |
| 560 | |
| 561 | /* This is set up so that only a single autoprobe takes place per call. |
| 562 | ISA device autoprobes on a running machine are not recommended. */ |
| 563 | int __init |
| 564 | init_module(void) |
| 565 | { |
| 566 | struct net_device *dev; |
| 567 | int this_dev, found = 0; |
| 568 | |
| 569 | for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) { |
| 570 | if (io[this_dev] == 0) { |
| 571 | if (this_dev != 0) break; /* only autoprobe 1st one */ |
| 572 | printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n"); |
| 573 | } |
| 574 | dev = alloc_ei_netdev(); |
| 575 | if (!dev) |
| 576 | break; |
| 577 | dev->irq = irq[this_dev]; |
| 578 | dev->base_addr = io[this_dev]; |
| 579 | if (do_ultra_probe(dev) == 0) { |
| 580 | dev_ultra[found++] = dev; |
| 581 | continue; |
| 582 | } |
| 583 | free_netdev(dev); |
| 584 | printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]); |
| 585 | break; |
| 586 | } |
| 587 | if (found) |
| 588 | return 0; |
| 589 | return -ENXIO; |
| 590 | } |
| 591 | |
| 592 | static void cleanup_card(struct net_device *dev) |
| 593 | { |
| 594 | /* NB: ultra_close_card() does free_irq */ |
| 595 | #ifdef __ISAPNP__ |
| 596 | struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; |
| 597 | if (idev) |
| 598 | pnp_device_detach(idev); |
| 599 | #endif |
| 600 | release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT); |
| 601 | iounmap(ei_status.mem); |
| 602 | } |
| 603 | |
| 604 | void __exit |
| 605 | cleanup_module(void) |
| 606 | { |
| 607 | int this_dev; |
| 608 | |
| 609 | for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) { |
| 610 | struct net_device *dev = dev_ultra[this_dev]; |
| 611 | if (dev) { |
| 612 | unregister_netdev(dev); |
| 613 | cleanup_card(dev); |
| 614 | free_netdev(dev); |
| 615 | } |
| 616 | } |
| 617 | } |
| 618 | #endif /* MODULE */ |