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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 | /* lne390.c Linux driver for Mylex LNE390 EISA Network Adapter Copyright (C) 1996-1998, Paul Gortmaker. This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. Information and Code Sources: 1) Based upon framework of es3210 driver. 2) The existing myriad of other Linux 8390 drivers by Donald Becker. 3) Russ Nelson's asm packet driver provided additional info. 4) Info for getting IRQ and sh-mem gleaned from the EISA cfg files. The LNE390 is an EISA shared memory NS8390 implementation. Note that all memory copies to/from the board must be 32bit transfers. There are two versions of the card: the lne390a and the lne390b. Going by the EISA cfg files, the "a" has jumpers to select between BNC/AUI, but the "b" also has RJ-45 and selection is via the SCU. The shared memory address selection is also slightly different. Note that shared memory address > 1MB are supported with this driver. You can try <http://www.mylex.com> if you want more info, as I've never even seen one of these cards. :) Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/09/01 - get rid of check_region - no need to check if dev == NULL in lne390_probe1 */ static const char *version = "lne390.c: Driver revision v0.99.1, 01/09/2000\n"; #include <linux/module.h> #include <linux/eisa.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <asm/io.h> #include <asm/system.h> #include "8390.h" #define DRV_NAME "lne390" static int lne390_probe1(struct net_device *dev, int ioaddr); static void lne390_reset_8390(struct net_device *dev); static void lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page); static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset); static void lne390_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page); #define LNE390_START_PG 0x00 /* First page of TX buffer */ #define LNE390_STOP_PG 0x80 /* Last page +1 of RX ring */ #define LNE390_ID_PORT 0xc80 /* Same for all EISA cards */ #define LNE390_IO_EXTENT 0x20 #define LNE390_SA_PROM 0x16 /* Start of e'net addr. */ #define LNE390_RESET_PORT 0xc84 /* From the pkt driver source */ #define LNE390_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */ #define LNE390_ADDR0 0x00 /* 3 byte vendor prefix */ #define LNE390_ADDR1 0x80 #define LNE390_ADDR2 0xe5 #define LNE390_ID0 0x10009835 /* 0x3598 = 01101 01100 11000 = mlx */ #define LNE390_ID1 0x11009835 /* above is the 390A, this is 390B */ #define LNE390_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */ #define LNE390_CFG2 0xc90 /* * You can OR any of the following bits together and assign it * to LNE390_DEBUG to get verbose driver info during operation. * Currently only the probe one is implemented. */ #define LNE390_D_PROBE 0x01 #define LNE390_D_RX_PKT 0x02 #define LNE390_D_TX_PKT 0x04 #define LNE390_D_IRQ 0x08 #define LNE390_DEBUG 0 static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3}; static unsigned int shmem_mapA[] __initdata = {0xff, 0xfe, 0xfd, 0xfff, 0xffe, 0xffc, 0x0d, 0x0}; static unsigned int shmem_mapB[] __initdata = {0xff, 0xfe, 0x0e, 0xfff, 0xffe, 0xffc, 0x0d, 0x0}; /* * Probe for the card. The best way is to read the EISA ID if it * is known. Then we can check the prefix of the station address * PROM for a match against the value assigned to Mylex. */ static int __init do_lne390_probe(struct net_device *dev) { unsigned short ioaddr = dev->base_addr; int irq = dev->irq; int mem_start = dev->mem_start; int ret; if (ioaddr > 0x1ff) { /* Check a single specified location. */ if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME)) return -EBUSY; ret = lne390_probe1(dev, ioaddr); if (ret) release_region(ioaddr, LNE390_IO_EXTENT); return ret; } else if (ioaddr > 0) /* Don't probe at all. */ return -ENXIO; if (!EISA_bus) { #if LNE390_DEBUG & LNE390_D_PROBE printk("lne390-debug: Not an EISA bus. Not probing high ports.\n"); #endif return -ENXIO; } /* EISA spec allows for up to 16 slots, but 8 is typical. */ for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME)) continue; if (lne390_probe1(dev, ioaddr) == 0) return 0; release_region(ioaddr, LNE390_IO_EXTENT); dev->irq = irq; dev->mem_start = mem_start; } return -ENODEV; } #ifndef MODULE struct net_device * __init lne390_probe(int unit) { struct net_device *dev = alloc_ei_netdev(); int err; if (!dev) return ERR_PTR(-ENOMEM); sprintf(dev->name, "eth%d", unit); netdev_boot_setup_check(dev); err = do_lne390_probe(dev); if (err) goto out; return dev; out: free_netdev(dev); return ERR_PTR(err); } #endif static int __init lne390_probe1(struct net_device *dev, int ioaddr) { int i, revision, ret; unsigned long eisa_id; if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV; #if LNE390_DEBUG & LNE390_D_PROBE printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT)); printk("lne390-debug: config regs: %#x %#x\n", inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2)); #endif /* Check the EISA ID of the card. */ eisa_id = inl(ioaddr + LNE390_ID_PORT); if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) { return -ENODEV; } revision = (eisa_id >> 24) & 0x01; /* 0 = rev A, 1 rev B */ #if 0 /* Check the Mylex vendor ID as well. Not really required. */ if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0 || inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1 || inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) { printk("lne390.c: card not found"); for(i = 0; i < ETHER_ADDR_LEN; i++) printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i)); printk(" (invalid prefix).\n"); return -ENODEV; } #endif for(i = 0; i < ETHER_ADDR_LEN; i++) dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i); printk("lne390.c: LNE390%X in EISA slot %d, address %pM.\n", 0xa+revision, ioaddr/0x1000, dev->dev_addr); printk("lne390.c: "); /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */ if (dev->irq == 0) { unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3; dev->irq = irq_map[irq_reg & 0x07]; printk("using"); } else { /* This is useless unless we reprogram the card here too */ if (dev->irq == 2) dev->irq = 9; /* Doh! */ printk("assigning"); } printk(" IRQ %d,", dev->irq); if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) { printk (" unable to get IRQ %d.\n", dev->irq); return ret; } if (dev->mem_start == 0) { unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07; if (revision) /* LNE390B */ dev->mem_start = shmem_mapB[mem_reg] * 0x10000; else /* LNE390A */ dev->mem_start = shmem_mapA[mem_reg] * 0x10000; printk(" using "); } else { /* Should check for value in shmem_map and reprogram the card to use it */ dev->mem_start &= 0xfff0000; printk(" assigning "); } printk("%dkB memory at physical address %#lx\n", LNE390_STOP_PG/4, dev->mem_start); /* BEWARE!! Some dain-bramaged EISA SCUs will allow you to put the card mem within the region covered by `normal' RAM !!! ioremap() will fail in that case. */ ei_status.mem = ioremap(dev->mem_start, LNE390_STOP_PG*0x100); if (!ei_status.mem) { printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n"); printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n"); printk(KERN_ERR "lne390.c: Driver NOT installed.\n"); ret = -EAGAIN; goto cleanup; } printk("lne390.c: remapped %dkB card memory to virtual address %p\n", LNE390_STOP_PG/4, ei_status.mem); dev->mem_start = (unsigned long)ei_status.mem; dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256; /* The 8390 offset is zero for the LNE390 */ dev->base_addr = ioaddr; ei_status.name = "LNE390"; ei_status.tx_start_page = LNE390_START_PG; ei_status.rx_start_page = LNE390_START_PG + TX_PAGES; ei_status.stop_page = LNE390_STOP_PG; ei_status.word16 = 1; if (ei_debug > 0) printk(version); ei_status.reset_8390 = &lne390_reset_8390; ei_status.block_input = &lne390_block_input; ei_status.block_output = &lne390_block_output; ei_status.get_8390_hdr = &lne390_get_8390_hdr; dev->netdev_ops = &ei_netdev_ops; NS8390_init(dev, 0); ret = register_netdev(dev); if (ret) goto unmap; return 0; unmap: if (ei_status.reg0) iounmap(ei_status.mem); cleanup: free_irq(dev->irq, dev); return ret; } /* * Reset as per the packet driver method. Judging by the EISA cfg * file, this just toggles the "Board Enable" bits (bit 2 and 0). */ static void lne390_reset_8390(struct net_device *dev) { unsigned short ioaddr = dev->base_addr; outb(0x04, ioaddr + LNE390_RESET_PORT); if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name); mdelay(2); ei_status.txing = 0; outb(0x01, ioaddr + LNE390_RESET_PORT); if (ei_debug > 1) printk("reset done\n"); } /* * Note: In the following three functions is the implicit assumption * that the associated memcpy will only use "rep; movsl" as long as * we keep the counts as some multiple of doublewords. This is a * requirement of the hardware, and also prevents us from using * eth_io_copy_and_sum() since we can't guarantee it will limit * itself to doubleword access. */ /* * Grab the 8390 specific header. Similar to the block_input routine, but * we don't need to be concerned with ring wrap as the header will be at * the start of a page, so we optimize accordingly. (A single doubleword.) */ static void lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) { void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_START_PG)<<8); memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */ } /* * Block input and output are easy on shared memory ethercards, the only * complication is when the ring buffer wraps. The count will already * be rounded up to a doubleword value via lne390_get_8390_hdr() above. */ static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) { void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8); if (ring_offset + count > (LNE390_STOP_PG<<8)) { /* Packet wraps over end of ring buffer. */ int semi_count = (LNE390_STOP_PG<<8) - ring_offset; memcpy_fromio(skb->data, xfer_start, semi_count); count -= semi_count; memcpy_fromio(skb->data + semi_count, ei_status.mem + (TX_PAGES<<8), count); } else { /* Packet is in one chunk. */ memcpy_fromio(skb->data, xfer_start, count); } } static void lne390_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page) { void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8); count = (count + 3) & ~3; /* Round up to doubleword */ memcpy_toio(shmem, buf, count); } #ifdef MODULE #define MAX_LNE_CARDS 4 /* Max number of LNE390 cards per module */ static struct net_device *dev_lne[MAX_LNE_CARDS]; static int io[MAX_LNE_CARDS]; static int irq[MAX_LNE_CARDS]; static int mem[MAX_LNE_CARDS]; module_param_array(io, int, NULL, 0); module_param_array(irq, int, NULL, 0); module_param_array(mem, int, NULL, 0); MODULE_PARM_DESC(io, "I/O base address(es)"); MODULE_PARM_DESC(irq, "IRQ number(s)"); MODULE_PARM_DESC(mem, "memory base address(es)"); MODULE_DESCRIPTION("Mylex LNE390A/B EISA Ethernet driver"); MODULE_LICENSE("GPL"); int __init init_module(void) { struct net_device *dev; int this_dev, found = 0; for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) { if (io[this_dev] == 0 && this_dev != 0) break; dev = alloc_ei_netdev(); if (!dev) break; dev->irq = irq[this_dev]; dev->base_addr = io[this_dev]; dev->mem_start = mem[this_dev]; if (do_lne390_probe(dev) == 0) { dev_lne[found++] = dev; continue; } free_netdev(dev); printk(KERN_WARNING "lne390.c: No LNE390 card found (i/o = 0x%x).\n", io[this_dev]); break; } if (found) return 0; return -ENXIO; } static void cleanup_card(struct net_device *dev) { free_irq(dev->irq, dev); release_region(dev->base_addr, LNE390_IO_EXTENT); iounmap(ei_status.mem); } void __exit cleanup_module(void) { int this_dev; for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) { struct net_device *dev = dev_lne[this_dev]; if (dev) { unregister_netdev(dev); cleanup_card(dev); free_netdev(dev); } } } #endif /* MODULE */ |