1/* smc-mca.c: A SMC Ultra ethernet driver for linux. */ 2/* 3 Most of this driver, except for ultramca_probe is nearly 4 verbatim from smc-ultra.c by Donald Becker. The rest is 5 written and copyright 1996 by David Weis, weisd3458@uni.edu 6 7 This is a driver for the SMC Ultra and SMC EtherEZ ethercards. 8 9 This driver uses the cards in the 8390-compatible, shared memory mode. 10 Most of the run-time complexity is handled by the generic code in 11 8390.c. 12 13 This driver enables the shared memory only when doing the actual data 14 transfers to avoid a bug in early version of the card that corrupted 15 data transferred by a AHA1542. 16 17 This driver does not support the programmed-I/O data transfer mode of 18 the EtherEZ. That support (if available) is smc-ez.c. Nor does it 19 use the non-8390-compatible "Altego" mode. (No support currently planned.) 20 21 Changelog: 22 23 Paul Gortmaker : multiple card support for module users. 24 David Weis : Micro Channel-ized it. 25 Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A 26 Christopher Turcksin : Changed MCA-probe so that multiple adapters are 27 found correctly (Jul 16, 1997) 28 Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997) 29 Tom Sightler : Fixed minor detection bug caused by above merge 30 Tom Sightler : Added support for three more Western Digital 31 MCA-adapters 32 Tom Sightler : Added support for 2.2.x mca_find_unused_adapter 33 Hartmut Schmidt : - Modified parameter detection to handle each 34 card differently depending on a switch-list 35 - 'card_ver' removed from the adapter list 36 - Some minor bug fixes 37*/ 38 39#include <linux/mca.h> 40#include <linux/module.h> 41#include <linux/kernel.h> 42#include <linux/errno.h> 43#include <linux/string.h> 44#include <linux/init.h> 45#include <linux/netdevice.h> 46#include <linux/etherdevice.h> 47 48#include <asm/io.h> 49#include <asm/system.h> 50 51#include "8390.h" 52 53#define DRV_NAME "smc-mca" 54 55static int ultramca_open(struct net_device *dev); 56static void ultramca_reset_8390(struct net_device *dev); 57static void ultramca_get_8390_hdr(struct net_device *dev, 58 struct e8390_pkt_hdr *hdr, 59 int ring_page); 60static void ultramca_block_input(struct net_device *dev, int count, 61 struct sk_buff *skb, 62 int ring_offset); 63static void ultramca_block_output(struct net_device *dev, int count, 64 const unsigned char *buf, 65 const int start_page); 66static int ultramca_close_card(struct net_device *dev); 67 68#define START_PG 0x00 /* First page of TX buffer */ 69 70#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */ 71#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */ 72#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */ 73#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */ 74#define ULTRA_IO_EXTENT 32 75#define EN0_ERWCNT 0x08 /* Early receive warning count. */ 76 77#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0 78#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1 79#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2 80#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3 81#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4 82#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5 83#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6 84#define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7 85 86struct smc_mca_adapters_t { 87 unsigned int id; 88 char *name; 89}; 90 91#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */ 92 93static int ultra_io[MAX_ULTRAMCA_CARDS]; 94static int ultra_irq[MAX_ULTRAMCA_CARDS]; 95MODULE_LICENSE("GPL"); 96 97module_param_array(ultra_io, int, NULL, 0); 98module_param_array(ultra_irq, int, NULL, 0); 99MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)"); 100MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)"); 101 102static const struct { 103 unsigned int base_addr; 104} addr_table[] = { 105 { 0x0800 }, 106 { 0x1800 }, 107 { 0x2800 }, 108 { 0x3800 }, 109 { 0x4800 }, 110 { 0x5800 }, 111 { 0x6800 }, 112 { 0x7800 }, 113 { 0x8800 }, 114 { 0x9800 }, 115 { 0xa800 }, 116 { 0xb800 }, 117 { 0xc800 }, 118 { 0xd800 }, 119 { 0xe800 }, 120 { 0xf800 } 121}; 122 123#define MEM_MASK 64 124 125static const struct { 126 unsigned char mem_index; 127 unsigned long mem_start; 128 unsigned char num_pages; 129} mem_table[] = { 130 { 16, 0x0c0000, 40 }, 131 { 18, 0x0c4000, 40 }, 132 { 20, 0x0c8000, 40 }, 133 { 22, 0x0cc000, 40 }, 134 { 24, 0x0d0000, 40 }, 135 { 26, 0x0d4000, 40 }, 136 { 28, 0x0d8000, 40 }, 137 { 30, 0x0dc000, 40 }, 138 {144, 0xfc0000, 40 }, 139 {148, 0xfc8000, 40 }, 140 {154, 0xfd0000, 40 }, 141 {156, 0xfd8000, 40 }, 142 { 0, 0x0c0000, 20 }, 143 { 1, 0x0c2000, 20 }, 144 { 2, 0x0c4000, 20 }, 145 { 3, 0x0c6000, 20 } 146}; 147 148#define IRQ_MASK 243 149static const struct { 150 unsigned char new_irq; 151 unsigned char old_irq; 152} irq_table[] = { 153 { 3, 3 }, 154 { 4, 4 }, 155 { 10, 10 }, 156 { 14, 15 } 157}; 158 159static short smc_mca_adapter_ids[] __initdata = { 160 0x61c8, 161 0x61c9, 162 0x6fc0, 163 0x6fc1, 164 0x6fc2, 165 0xefd4, 166 0xefd5, 167 0xefe5, 168 0x0000 169}; 170 171static char *smc_mca_adapter_names[] __initdata = { 172 "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)", 173 "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)", 174 "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)", 175 "WD Starcard PLUS/A (WD8003ST/A)", 176 "WD Ethercard PLUS 10T/A (WD8003W/A)", 177 "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)", 178 "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)", 179 "IBM PS/2 Adapter/A for Ethernet", 180 NULL 181}; 182 183static int ultra_found = 0; 184 185 186static const struct net_device_ops ultramca_netdev_ops = { 187 .ndo_open = ultramca_open, 188 .ndo_stop = ultramca_close_card, 189 190 .ndo_start_xmit = ei_start_xmit, 191 .ndo_tx_timeout = ei_tx_timeout, 192 .ndo_get_stats = ei_get_stats, 193 .ndo_set_multicast_list = ei_set_multicast_list, 194 .ndo_validate_addr = eth_validate_addr, 195 .ndo_set_mac_address = eth_mac_addr, 196 .ndo_change_mtu = eth_change_mtu, 197#ifdef CONFIG_NET_POLL_CONTROLLER 198 .ndo_poll_controller = ei_poll, 199#endif 200}; 201 202static int __init ultramca_probe(struct device *gen_dev) 203{ 204 unsigned short ioaddr; 205 struct net_device *dev; 206 unsigned char reg4, num_pages; 207 struct mca_device *mca_dev = to_mca_device(gen_dev); 208 char slot = mca_dev->slot; 209 unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff; 210 int i, rc; 211 int adapter = mca_dev->index; 212 int tbase = 0; 213 int tirq = 0; 214 int base_addr = ultra_io[ultra_found]; 215 int irq = ultra_irq[ultra_found]; 216 217 if (base_addr || irq) { 218 printk(KERN_INFO "Probing for SMC MCA adapter"); 219 if (base_addr) { 220 printk(KERN_INFO " at I/O address 0x%04x%c", 221 base_addr, irq ? ' ' : '\n'); 222 } 223 if (irq) { 224 printk(KERN_INFO "using irq %d\n", irq); 225 } 226 } 227 228 tirq = 0; 229 tbase = 0; 230 231 /* If we're trying to match a specificied irq or io address, 232 * we'll reject the adapter found unless it's the one we're 233 * looking for */ 234 235 pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */ 236 pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */ 237 pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */ 238 pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */ 239 240 /* Test the following conditions: 241 * - If an irq parameter is supplied, compare it 242 * with the irq of the adapter we found 243 * - If a base_addr paramater is given, compare it 244 * with the base_addr of the adapter we found 245 * - Check that the irq and the base_addr of the 246 * adapter we found is not already in use by 247 * this driver 248 */ 249 250 switch (mca_dev->index) { 251 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A: 252 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A: 253 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A: 254 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A: 255 { 256 tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr; 257 tirq = irq_table[(pos5 & 0xc) >> 2].new_irq; 258 break; 259 } 260 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A: 261 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A: 262 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A: 263 case _efe5_IBM_PS2_Adapter_A_for_Ethernet: 264 { 265 tbase = ((pos2 & 0x0fe) * 0x10); 266 tirq = irq_table[(pos5 & 3)].old_irq; 267 break; 268 } 269 } 270 271 if(!tirq || !tbase || 272 (irq && irq != tirq) || 273 (base_addr && tbase != base_addr)) 274 return -ENXIO; 275 276 /* Adapter found. */ 277 dev = alloc_ei_netdev(); 278 if(!dev) 279 return -ENODEV; 280 281 SET_NETDEV_DEV(dev, gen_dev); 282 mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]); 283 mca_device_set_claim(mca_dev, 1); 284 285 printk(KERN_INFO "smc_mca: %s found in slot %d\n", 286 smc_mca_adapter_names[adapter], slot + 1); 287 288 ultra_found++; 289 290 dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase); 291 dev->irq = mca_device_transform_irq(mca_dev, tirq); 292 dev->mem_start = 0; 293 num_pages = 40; 294 295 switch (adapter) { /* card-# in const array above [hs] */ 296 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A: 297 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A: 298 { 299 for (i = 0; i < 16; i++) { /* taking 16 counts 300 * up to 15 [hs] */ 301 if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) { 302 dev->mem_start = (unsigned long) 303 mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start); 304 num_pages = mem_table[i].num_pages; 305 } 306 } 307 break; 308 } 309 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A: 310 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A: 311 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A: 312 case _efe5_IBM_PS2_Adapter_A_for_Ethernet: 313 { 314 dev->mem_start = (unsigned long) 315 mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000)); 316 num_pages = 0x40; 317 break; 318 } 319 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A: 320 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A: 321 { 322 /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates 323 * the index of the 0x2000 step. 324 * beware different number of pages [hs] 325 */ 326 dev->mem_start = (unsigned long) 327 mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf)))); 328 num_pages = 0x20 + (2 * (pos3 & 0x10)); 329 break; 330 } 331 } 332 333 /* sanity check, shouldn't happen */ 334 if (dev->mem_start == 0) { 335 rc = -ENODEV; 336 goto err_unclaim; 337 } 338 339 if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) { 340 rc = -ENODEV; 341 goto err_unclaim; 342 } 343 344 reg4 = inb(ioaddr + 4) & 0x7f; 345 outb(reg4, ioaddr + 4); 346 347 for (i = 0; i < 6; i++) 348 dev->dev_addr[i] = inb(ioaddr + 8 + i); 349 350 printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM", 351 slot + 1, ioaddr, dev->dev_addr); 352 353 /* Switch from the station address to the alternate register set 354 * and read the useful registers there. 355 */ 356 357 outb(0x80 | reg4, ioaddr + 4); 358 359 /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot. 360 */ 361 362 outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c); 363 364 /* Switch back to the station address register set so that 365 * the MS-DOS driver can find the card after a warm boot. 366 */ 367 368 outb(reg4, ioaddr + 4); 369 370 dev_set_drvdata(gen_dev, dev); 371 372 /* The 8390 isn't at the base address, so fake the offset 373 */ 374 375 dev->base_addr = ioaddr + ULTRA_NIC_OFFSET; 376 377 ei_status.name = "SMC Ultra MCA"; 378 ei_status.word16 = 1; 379 ei_status.tx_start_page = START_PG; 380 ei_status.rx_start_page = START_PG + TX_PAGES; 381 ei_status.stop_page = num_pages; 382 383 ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256); 384 if (!ei_status.mem) { 385 rc = -ENOMEM; 386 goto err_release_region; 387 } 388 389 dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256; 390 391 printk(", IRQ %d memory %#lx-%#lx.\n", 392 dev->irq, dev->mem_start, dev->mem_end - 1); 393 394 ei_status.reset_8390 = &ultramca_reset_8390; 395 ei_status.block_input = &ultramca_block_input; 396 ei_status.block_output = &ultramca_block_output; 397 ei_status.get_8390_hdr = &ultramca_get_8390_hdr; 398 399 ei_status.priv = slot; 400 401 dev->netdev_ops = &ultramca_netdev_ops; 402 403 NS8390_init(dev, 0); 404 405 rc = register_netdev(dev); 406 if (rc) 407 goto err_unmap; 408 409 return 0; 410 411err_unmap: 412 iounmap(ei_status.mem); 413err_release_region: 414 release_region(ioaddr, ULTRA_IO_EXTENT); 415err_unclaim: 416 mca_device_set_claim(mca_dev, 0); 417 free_netdev(dev); 418 return rc; 419} 420 421static int ultramca_open(struct net_device *dev) 422{ 423 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ 424 int retval; 425 426 if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev))) 427 return retval; 428 429 outb(ULTRA_MEMENB, ioaddr); /* Enable memory */ 430 outb(0x80, ioaddr + 5); /* ??? */ 431 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */ 432 outb(0x04, ioaddr + 5); /* ??? */ 433 434 /* Set the early receive warning level in window 0 high enough not 435 * to receive ERW interrupts. 436 */ 437 438 /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr); 439 * outb(0xff, dev->base_addr + EN0_ERWCNT); 440 */ 441 442 ei_open(dev); 443 return 0; 444} 445 446static void ultramca_reset_8390(struct net_device *dev) 447{ 448 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ 449 450 outb(ULTRA_RESET, ioaddr); 451 if (ei_debug > 1) 452 printk("resetting Ultra, t=%ld...", jiffies); 453 ei_status.txing = 0; 454 455 outb(0x80, ioaddr + 5); /* ??? */ 456 outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */ 457 458 if (ei_debug > 1) 459 printk("reset done\n"); 460} 461 462/* Grab the 8390 specific header. Similar to the block_input routine, but 463 * we don't need to be concerned with ring wrap as the header will be at 464 * the start of a page, so we optimize accordingly. 465 */ 466 467static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 468{ 469 void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8); 470 471#ifdef notdef 472 /* Officially this is what we are doing, but the readl() is faster */ 473 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); 474#else 475 ((unsigned int*)hdr)[0] = readl(hdr_start); 476#endif 477} 478 479/* Block input and output are easy on shared memory ethercards, the only 480 * complication is when the ring buffer wraps. 481 */ 482 483static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 484{ 485 void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256; 486 487 if (ring_offset + count > ei_status.stop_page * 256) { 488 /* We must wrap the input move. */ 489 int semi_count = ei_status.stop_page * 256 - ring_offset; 490 memcpy_fromio(skb->data, xfer_start, semi_count); 491 count -= semi_count; 492 memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count); 493 } else { 494 memcpy_fromio(skb->data, xfer_start, count); 495 } 496 497} 498 499static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf, 500 int start_page) 501{ 502 void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8); 503 504 memcpy_toio(shmem, buf, count); 505} 506 507static int ultramca_close_card(struct net_device *dev) 508{ 509 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ 510 511 netif_stop_queue(dev); 512 513 if (ei_debug > 1) 514 printk("%s: Shutting down ethercard.\n", dev->name); 515 516 outb(0x00, ioaddr + 6); /* Disable interrupts. */ 517 free_irq(dev->irq, dev); 518 519 NS8390_init(dev, 0); 520 /* We should someday disable shared memory and change to 8-bit mode 521 * "just in case"... 522 */ 523 524 return 0; 525} 526 527static int ultramca_remove(struct device *gen_dev) 528{ 529 struct mca_device *mca_dev = to_mca_device(gen_dev); 530 struct net_device *dev = dev_get_drvdata(gen_dev); 531 532 if (dev) { 533 /* NB: ultra_close_card() does free_irq */ 534 int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; 535 536 unregister_netdev(dev); 537 mca_device_set_claim(mca_dev, 0); 538 release_region(ioaddr, ULTRA_IO_EXTENT); 539 iounmap(ei_status.mem); 540 free_netdev(dev); 541 } 542 return 0; 543} 544 545 546static struct mca_driver ultra_driver = { 547 .id_table = smc_mca_adapter_ids, 548 .driver = { 549 .name = "smc-mca", 550 .bus = &mca_bus_type, 551 .probe = ultramca_probe, 552 .remove = ultramca_remove, 553 } 554}; 555 556static int __init ultramca_init_module(void) 557{ 558 if(!MCA_bus) 559 return -ENXIO; 560 561 mca_register_driver(&ultra_driver); 562 563 return ultra_found ? 0 : -ENXIO; 564} 565 566static void __exit ultramca_cleanup_module(void) 567{ 568 mca_unregister_driver(&ultra_driver); 569} 570module_init(ultramca_init_module); 571module_exit(ultramca_cleanup_module); 572