1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0 2 * driver for linux. 3 */ 4 5 /* 6 Written 1996 by Russell Nelson, with reference to skeleton.c 7 written 1993-1994 by Donald Becker. 8 9 This software may be used and distributed according to the terms 10 of the GNU General Public License, incorporated herein by reference. 11 12 The author may be reached at nelson@crynwr.com, Crynwr 13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676 14 15 Changelog: 16 17 Mike Cruse : mcruse@cti-ltd.com 18 : Changes for Linux 2.0 compatibility. 19 : Added dev_id parameter in net_interrupt(), 20 : request_irq() and free_irq(). Just NULL for now. 21 22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros 23 : in net_open() and net_close() so kerneld would know 24 : that the module is in use and wouldn't eject the 25 : driver prematurely. 26 27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c 28 : as an example. Disabled autoprobing in init_module(), 29 : not a good thing to do to other devices while Linux 30 : is running from all accounts. 31 32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support. 33 34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility. 35 : email: ethernet@crystal.cirrus.com 36 37 Alan Cox : Removed 1.2 support, added 2.1 extra counters. 38 39 Andrew Morton : Kernel 2.3.48 40 : Handle kmalloc() failures 41 : Other resource allocation fixes 42 : Add SMP locks 43 : Integrate Russ Nelson's ALLOW_DMA functionality back in. 44 : If ALLOW_DMA is true, make DMA runtime selectable 45 : Folded in changes from Cirrus (Melody Lee 46 : <klee@crystal.cirrus.com>) 47 : Don't call netif_wake_queue() in net_send_packet() 48 : Fixed an out-of-mem bug in dma_rx() 49 : Updated Documentation/networking/cs89x0.txt 50 51 Andrew Morton : Kernel 2.3.99-pre1 52 : Use skb_reserve to longword align IP header (two places) 53 : Remove a delay loop from dma_rx() 54 : Replace '100' with HZ 55 : Clean up a couple of skb API abuses 56 : Added 'cs89x0_dma=N' kernel boot option 57 : Correctly initialise lp->lock in non-module compile 58 59 Andrew Morton : Kernel 2.3.99-pre4-1 60 : MOD_INC/DEC race fix (see 61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html) 62 63 Andrew Morton : Kernel 2.4.0-test7-pre2 64 : Enhanced EEPROM support to cover more devices, 65 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch 66 : (Jason Gunthorpe <jgg@ualberta.ca>) 67 68 Andrew Morton : Kernel 2.4.0-test11-pre4 69 : Use dev->name in request_*() (Andrey Panin) 70 : Fix an error-path memleak in init_module() 71 : Preserve return value from request_irq() 72 : Fix type of `media' module parm (Keith Owens) 73 : Use SET_MODULE_OWNER() 74 : Tidied up strange request_irq() abuse in net_open(). 75 76 Andrew Morton : Kernel 2.4.3-pre1 77 : Request correct number of pages for DMA (Hugh Dickens) 78 : Select PP_ChipID _after_ unregister_netdev in cleanup_module() 79 : because unregister_netdev() calls get_stats. 80 : Make `version[]' __initdata 81 : Uninlined the read/write reg/word functions. 82 83 Oskar Schirmer : oskar@scara.com 84 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=) 85 86 Deepak Saxena : dsaxena@plexity.net 87 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support 88 89 Dmitry Pervushin : dpervushin@ru.mvista.com 90 : PNX010X platform support 91 92 Deepak Saxena : dsaxena@plexity.net 93 : Intel IXDP2351 platform support 94 95 Dmitry Pervushin : dpervushin@ru.mvista.com 96 : PNX010X platform support 97 98 Domenico Andreoli : cavokz@gmail.com 99 : QQ2440 platform support 100 101 */ 102 103 /* Always include 'config.h' first in case the user wants to turn on 104 or override something. */ 105 #include <linux/module.h> 106 107 /* 108 * Set this to zero to disable DMA code 109 * 110 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma' 111 * module options so we don't break any startup scripts. 112 */ 113 #ifndef CONFIG_ISA_DMA_API 114 #define ALLOW_DMA 0 115 #else 116 #define ALLOW_DMA 1 117 #endif 118 119 /* 120 * Set this to zero to remove all the debug statements via 121 * dead code elimination 122 */ 123 #define DEBUGGING 1 124 125 /* 126 Sources: 127 128 Crynwr packet driver epktisa. 129 130 Crystal Semiconductor data sheets. 131 132 */ 133 134 #include <linux/errno.h> 135 #include <linux/netdevice.h> 136 #include <linux/etherdevice.h> 137 #include <linux/kernel.h> 138 #include <linux/types.h> 139 #include <linux/fcntl.h> 140 #include <linux/interrupt.h> 141 #include <linux/ioport.h> 142 #include <linux/in.h> 143 #include <linux/skbuff.h> 144 #include <linux/spinlock.h> 145 #include <linux/string.h> 146 #include <linux/init.h> 147 #include <linux/bitops.h> 148 #include <linux/delay.h> 149 #include <linux/gfp.h> 150 151 #include <asm/system.h> 152 #include <asm/io.h> 153 #include <asm/irq.h> 154 #if ALLOW_DMA 155 #include <asm/dma.h> 156 #endif 157 158 #include "cs89x0.h" 159 160 static char version[] __initdata = 161 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n"; 162 163 #define DRV_NAME "cs89x0" 164 165 /* First, a few definitions that the brave might change. 166 A zero-terminated list of I/O addresses to be probed. Some special flags.. 167 Addr & 1 = Read back the address port, look for signature and reset 168 the page window before probing 169 Addr & 3 = Reset the page window and probe 170 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, 171 but it is possible that a Cirrus board could be plugged into the ISA 172 slots. */ 173 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps 174 them to system IRQ numbers. This mapping is card specific and is set to 175 the configuration of the Cirrus Eval board for this chip. */ 176 #if defined(CONFIG_MACH_IXDP2351) 177 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0}; 178 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0}; 179 #elif defined(CONFIG_ARCH_IXDP2X01) 180 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0}; 181 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0}; 182 #elif defined(CONFIG_MACH_QQ2440) 183 #include <mach/qq2440.h> 184 static unsigned int netcard_portlist[] __used __initdata = { QQ2440_CS8900_VIRT_BASE + 0x300, 0 }; 185 static unsigned int cs8900_irq_map[] = { QQ2440_CS8900_IRQ, 0, 0, 0 }; 186 #elif defined(CONFIG_MACH_MX31ADS) 187 #include <mach/board-mx31ads.h> 188 static unsigned int netcard_portlist[] __used __initdata = { 189 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0 190 }; 191 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0}; 192 #else 193 static unsigned int netcard_portlist[] __used __initdata = 194 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; 195 static unsigned int cs8900_irq_map[] = {10,11,12,5}; 196 #endif 197 198 #if DEBUGGING 199 static unsigned int net_debug = DEBUGGING; 200 #else 201 #define net_debug 0 /* gcc will remove all the debug code for us */ 202 #endif 203 204 /* The number of low I/O ports used by the ethercard. */ 205 #define NETCARD_IO_EXTENT 16 206 207 /* we allow the user to override various values normally set in the EEPROM */ 208 #define FORCE_RJ45 0x0001 /* pick one of these three */ 209 #define FORCE_AUI 0x0002 210 #define FORCE_BNC 0x0004 211 212 #define FORCE_AUTO 0x0010 /* pick one of these three */ 213 #define FORCE_HALF 0x0020 214 #define FORCE_FULL 0x0030 215 216 /* Information that need to be kept for each board. */ 217 struct net_local { 218 int chip_type; /* one of: CS8900, CS8920, CS8920M */ 219 char chip_revision; /* revision letter of the chip ('A'...) */ 220 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */ 221 int auto_neg_cnf; /* auto-negotiation word from EEPROM */ 222 int adapter_cnf; /* adapter configuration from EEPROM */ 223 int isa_config; /* ISA configuration from EEPROM */ 224 int irq_map; /* IRQ map from EEPROM */ 225 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */ 226 int curr_rx_cfg; /* a copy of PP_RxCFG */ 227 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */ 228 int send_underrun; /* keep track of how many underruns in a row we get */ 229 int force; /* force various values; see FORCE* above. */ 230 spinlock_t lock; 231 #if ALLOW_DMA 232 int use_dma; /* Flag: we're using dma */ 233 int dma; /* DMA channel */ 234 int dmasize; /* 16 or 64 */ 235 unsigned char *dma_buff; /* points to the beginning of the buffer */ 236 unsigned char *end_dma_buff; /* points to the end of the buffer */ 237 unsigned char *rx_dma_ptr; /* points to the next packet */ 238 #endif 239 }; 240 241 /* Index to functions, as function prototypes. */ 242 243 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular); 244 static int net_open(struct net_device *dev); 245 static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev); 246 static irqreturn_t net_interrupt(int irq, void *dev_id); 247 static void set_multicast_list(struct net_device *dev); 248 static void net_timeout(struct net_device *dev); 249 static void net_rx(struct net_device *dev); 250 static int net_close(struct net_device *dev); 251 static struct net_device_stats *net_get_stats(struct net_device *dev); 252 static void reset_chip(struct net_device *dev); 253 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer); 254 static int get_eeprom_cksum(int off, int len, int *buffer); 255 static int set_mac_address(struct net_device *dev, void *addr); 256 static void count_rx_errors(int status, struct net_device *dev); 257 #ifdef CONFIG_NET_POLL_CONTROLLER 258 static void net_poll_controller(struct net_device *dev); 259 #endif 260 #if ALLOW_DMA 261 static void get_dma_channel(struct net_device *dev); 262 static void release_dma_buff(struct net_local *lp); 263 #endif 264 265 /* Example routines you must write ;->. */ 266 #define tx_done(dev) 1 267 268 /* 269 * Permit 'cs89x0_dma=N' in the kernel boot environment 270 */ 271 #if !defined(MODULE) && (ALLOW_DMA != 0) 272 static int g_cs89x0_dma; 273 274 static int __init dma_fn(char *str) 275 { 276 g_cs89x0_dma = simple_strtol(str,NULL,0); 277 return 1; 278 } 279 280 __setup("cs89x0_dma=", dma_fn); 281 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */ 282 283 #ifndef MODULE 284 static int g_cs89x0_media__force; 285 286 static int __init media_fn(char *str) 287 { 288 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45; 289 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI; 290 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC; 291 return 1; 292 } 293 294 __setup("cs89x0_media=", media_fn); 295 296 297 /* Check for a network adaptor of this type, and return '0' iff one exists. 298 If dev->base_addr == 0, probe all likely locations. 299 If dev->base_addr == 1, always return failure. 300 If dev->base_addr == 2, allocate space for the device and return success 301 (detachable devices only). 302 Return 0 on success. 303 */ 304 305 struct net_device * __init cs89x0_probe(int unit) 306 { 307 struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); 308 unsigned *port; 309 int err = 0; 310 int irq; 311 int io; 312 313 if (!dev) 314 return ERR_PTR(-ENODEV); 315 316 sprintf(dev->name, "eth%d", unit); 317 netdev_boot_setup_check(dev); 318 io = dev->base_addr; 319 irq = dev->irq; 320 321 if (net_debug) 322 printk("cs89x0:cs89x0_probe(0x%x)\n", io); 323 324 if (io > 0x1ff) { /* Check a single specified location. */ 325 err = cs89x0_probe1(dev, io, 0); 326 } else if (io != 0) { /* Don't probe at all. */ 327 err = -ENXIO; 328 } else { 329 for (port = netcard_portlist; *port; port++) { 330 if (cs89x0_probe1(dev, *port, 0) == 0) 331 break; 332 dev->irq = irq; 333 } 334 if (!*port) 335 err = -ENODEV; 336 } 337 if (err) 338 goto out; 339 return dev; 340 out: 341 free_netdev(dev); 342 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n"); 343 return ERR_PTR(err); 344 } 345 #endif 346 347 #if defined(CONFIG_MACH_IXDP2351) 348 static u16 349 readword(unsigned long base_addr, int portno) 350 { 351 return __raw_readw(base_addr + (portno << 1)); 352 } 353 354 static void 355 writeword(unsigned long base_addr, int portno, u16 value) 356 { 357 __raw_writew(value, base_addr + (portno << 1)); 358 } 359 #elif defined(CONFIG_ARCH_IXDP2X01) 360 static u16 361 readword(unsigned long base_addr, int portno) 362 { 363 return __raw_readl(base_addr + (portno << 1)); 364 } 365 366 static void 367 writeword(unsigned long base_addr, int portno, u16 value) 368 { 369 __raw_writel(value, base_addr + (portno << 1)); 370 } 371 #else 372 static u16 373 readword(unsigned long base_addr, int portno) 374 { 375 return inw(base_addr + portno); 376 } 377 378 static void 379 writeword(unsigned long base_addr, int portno, u16 value) 380 { 381 outw(value, base_addr + portno); 382 } 383 #endif 384 385 static void 386 readwords(unsigned long base_addr, int portno, void *buf, int length) 387 { 388 u8 *buf8 = (u8 *)buf; 389 390 do { 391 u16 tmp16; 392 393 tmp16 = readword(base_addr, portno); 394 *buf8++ = (u8)tmp16; 395 *buf8++ = (u8)(tmp16 >> 8); 396 } while (--length); 397 } 398 399 static void 400 writewords(unsigned long base_addr, int portno, void *buf, int length) 401 { 402 u8 *buf8 = (u8 *)buf; 403 404 do { 405 u16 tmp16; 406 407 tmp16 = *buf8++; 408 tmp16 |= (*buf8++) << 8; 409 writeword(base_addr, portno, tmp16); 410 } while (--length); 411 } 412 413 static u16 414 readreg(struct net_device *dev, u16 regno) 415 { 416 writeword(dev->base_addr, ADD_PORT, regno); 417 return readword(dev->base_addr, DATA_PORT); 418 } 419 420 static void 421 writereg(struct net_device *dev, u16 regno, u16 value) 422 { 423 writeword(dev->base_addr, ADD_PORT, regno); 424 writeword(dev->base_addr, DATA_PORT, value); 425 } 426 427 static int __init 428 wait_eeprom_ready(struct net_device *dev) 429 { 430 int timeout = jiffies; 431 /* check to see if the EEPROM is ready, a timeout is used - 432 just in case EEPROM is ready when SI_BUSY in the 433 PP_SelfST is clear */ 434 while(readreg(dev, PP_SelfST) & SI_BUSY) 435 if (jiffies - timeout >= 40) 436 return -1; 437 return 0; 438 } 439 440 static int __init 441 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) 442 { 443 int i; 444 445 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len); 446 for (i = 0; i < len; i++) { 447 if (wait_eeprom_ready(dev) < 0) return -1; 448 /* Now send the EEPROM read command and EEPROM location to read */ 449 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD); 450 if (wait_eeprom_ready(dev) < 0) return -1; 451 buffer[i] = readreg(dev, PP_EEData); 452 if (net_debug > 3) printk("%04x ", buffer[i]); 453 } 454 if (net_debug > 3) printk("\n"); 455 return 0; 456 } 457 458 static int __init 459 get_eeprom_cksum(int off, int len, int *buffer) 460 { 461 int i, cksum; 462 463 cksum = 0; 464 for (i = 0; i < len; i++) 465 cksum += buffer[i]; 466 cksum &= 0xffff; 467 if (cksum == 0) 468 return 0; 469 return -1; 470 } 471 472 #ifdef CONFIG_NET_POLL_CONTROLLER 473 /* 474 * Polling receive - used by netconsole and other diagnostic tools 475 * to allow network i/o with interrupts disabled. 476 */ 477 static void net_poll_controller(struct net_device *dev) 478 { 479 disable_irq(dev->irq); 480 net_interrupt(dev->irq, dev); 481 enable_irq(dev->irq); 482 } 483 #endif 484 485 static const struct net_device_ops net_ops = { 486 .ndo_open = net_open, 487 .ndo_stop = net_close, 488 .ndo_tx_timeout = net_timeout, 489 .ndo_start_xmit = net_send_packet, 490 .ndo_get_stats = net_get_stats, 491 .ndo_set_rx_mode = set_multicast_list, 492 .ndo_set_mac_address = set_mac_address, 493 #ifdef CONFIG_NET_POLL_CONTROLLER 494 .ndo_poll_controller = net_poll_controller, 495 #endif 496 .ndo_change_mtu = eth_change_mtu, 497 .ndo_validate_addr = eth_validate_addr, 498 }; 499 500 /* This is the real probe routine. Linux has a history of friendly device 501 probes on the ISA bus. A good device probes avoids doing writes, and 502 verifies that the correct device exists and functions. 503 Return 0 on success. 504 */ 505 506 static int __init 507 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular) 508 { 509 struct net_local *lp = netdev_priv(dev); 510 static unsigned version_printed; 511 int i; 512 int tmp; 513 unsigned rev_type = 0; 514 int eeprom_buff[CHKSUM_LEN]; 515 int retval; 516 517 /* Initialize the device structure. */ 518 if (!modular) { 519 memset(lp, 0, sizeof(*lp)); 520 spin_lock_init(&lp->lock); 521 #ifndef MODULE 522 #if ALLOW_DMA 523 if (g_cs89x0_dma) { 524 lp->use_dma = 1; 525 lp->dma = g_cs89x0_dma; 526 lp->dmasize = 16; /* Could make this an option... */ 527 } 528 #endif 529 lp->force = g_cs89x0_media__force; 530 #endif 531 532 #if defined(CONFIG_MACH_QQ2440) 533 lp->force |= FORCE_RJ45 | FORCE_FULL; 534 #endif 535 } 536 537 /* Grab the region so we can find another board if autoIRQ fails. */ 538 /* WTF is going on here? */ 539 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) { 540 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n", 541 DRV_NAME, ioaddr, NETCARD_IO_EXTENT); 542 retval = -EBUSY; 543 goto out1; 544 } 545 546 /* if they give us an odd I/O address, then do ONE write to 547 the address port, to get it back to address zero, where we 548 expect to find the EISA signature word. An IO with a base of 0x3 549 will skip the test for the ADD_PORT. */ 550 if (ioaddr & 1) { 551 if (net_debug > 1) 552 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr); 553 if ((ioaddr & 2) != 2) 554 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) { 555 printk(KERN_ERR "%s: bad signature 0x%x\n", 556 dev->name, readword(ioaddr & ~3, ADD_PORT)); 557 retval = -ENODEV; 558 goto out2; 559 } 560 } 561 562 ioaddr &= ~3; 563 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n", 564 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT)); 565 writeword(ioaddr, ADD_PORT, PP_ChipID); 566 567 tmp = readword(ioaddr, DATA_PORT); 568 if (tmp != CHIP_EISA_ID_SIG) { 569 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!=" 570 CHIP_EISA_ID_SIG_STR "\n", 571 dev->name, ioaddr, DATA_PORT, tmp); 572 retval = -ENODEV; 573 goto out2; 574 } 575 576 /* Fill in the 'dev' fields. */ 577 dev->base_addr = ioaddr; 578 579 /* get the chip type */ 580 rev_type = readreg(dev, PRODUCT_ID_ADD); 581 lp->chip_type = rev_type &~ REVISON_BITS; 582 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; 583 584 /* Check the chip type and revision in order to set the correct send command 585 CS8920 revision C and CS8900 revision F can use the faster send. */ 586 lp->send_cmd = TX_AFTER_381; 587 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') 588 lp->send_cmd = TX_NOW; 589 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C') 590 lp->send_cmd = TX_NOW; 591 592 if (net_debug && version_printed++ == 0) 593 printk(version); 594 595 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ", 596 dev->name, 597 lp->chip_type==CS8900?'0':'2', 598 lp->chip_type==CS8920M?"M":"", 599 lp->chip_revision, 600 dev->base_addr); 601 602 reset_chip(dev); 603 604 /* Here we read the current configuration of the chip. If there 605 is no Extended EEPROM then the idea is to not disturb the chip 606 configuration, it should have been correctly setup by automatic 607 EEPROM read on reset. So, if the chip says it read the EEPROM 608 the driver will always do *something* instead of complain that 609 adapter_cnf is 0. */ 610 611 612 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == 613 (EEPROM_OK|EEPROM_PRESENT)) { 614 /* Load the MAC. */ 615 for (i=0; i < ETH_ALEN/2; i++) { 616 unsigned int Addr; 617 Addr = readreg(dev, PP_IA+i*2); 618 dev->dev_addr[i*2] = Addr & 0xFF; 619 dev->dev_addr[i*2+1] = Addr >> 8; 620 } 621 622 /* Load the Adapter Configuration. 623 Note: Barring any more specific information from some 624 other source (ie EEPROM+Schematics), we would not know 625 how to operate a 10Base2 interface on the AUI port. 626 However, since we do read the status of HCB1 and use 627 settings that always result in calls to control_dc_dc(dev,0) 628 a BNC interface should work if the enable pin 629 (dc/dc converter) is on HCB1. It will be called AUI 630 however. */ 631 632 lp->adapter_cnf = 0; 633 i = readreg(dev, PP_LineCTL); 634 /* Preserve the setting of the HCB1 pin. */ 635 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) 636 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; 637 /* Save the sqelch bit */ 638 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) 639 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH; 640 /* Check if the card is in 10Base-t only mode */ 641 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0) 642 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T; 643 /* Check if the card is in AUI only mode */ 644 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY) 645 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI; 646 /* Check if the card is in Auto mode. */ 647 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) 648 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | 649 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; 650 651 if (net_debug > 1) 652 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", 653 dev->name, i, lp->adapter_cnf); 654 655 /* IRQ. Other chips already probe, see below. */ 656 if (lp->chip_type == CS8900) 657 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; 658 659 printk( "[Cirrus EEPROM] "); 660 } 661 662 printk("\n"); 663 664 /* First check to see if an EEPROM is attached. */ 665 666 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) 667 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n"); 668 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { 669 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n"); 670 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { 671 /* Check if the chip was able to read its own configuration starting 672 at 0 in the EEPROM*/ 673 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != 674 (EEPROM_OK|EEPROM_PRESENT)) 675 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); 676 677 } else { 678 /* This reads an extended EEPROM that is not documented 679 in the CS8900 datasheet. */ 680 681 /* get transmission control word but keep the autonegotiation bits */ 682 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; 683 /* Store adapter configuration */ 684 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; 685 /* Store ISA configuration */ 686 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; 687 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; 688 689 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ 690 /* store the initial memory base address */ 691 for (i = 0; i < ETH_ALEN/2; i++) { 692 dev->dev_addr[i*2] = eeprom_buff[i]; 693 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8; 694 } 695 if (net_debug > 1) 696 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n", 697 dev->name, lp->adapter_cnf); 698 } 699 700 /* allow them to force multiple transceivers. If they force multiple, autosense */ 701 { 702 int count = 0; 703 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; } 704 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } 705 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; } 706 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; } 707 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; } 708 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; } 709 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; } 710 } 711 712 if (net_debug > 1) 713 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n", 714 dev->name, lp->force, lp->adapter_cnf); 715 716 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ 717 718 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ 719 720 /* FIXME: we don't set the Ethernet address on the command line. Use 721 ifconfig IFACE hw ether AABBCCDDEEFF */ 722 723 printk(KERN_INFO "cs89x0 media %s%s%s", 724 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"", 725 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"", 726 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":""); 727 728 lp->irq_map = 0xffff; 729 730 /* If this is a CS8900 then no pnp soft */ 731 if (lp->chip_type != CS8900 && 732 /* Check if the ISA IRQ has been set */ 733 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, 734 (i != 0 && i < CS8920_NO_INTS))) { 735 if (!dev->irq) 736 dev->irq = i; 737 } else { 738 i = lp->isa_config & INT_NO_MASK; 739 if (lp->chip_type == CS8900) { 740 #ifdef CONFIG_CS89x0_NONISA_IRQ 741 i = cs8900_irq_map[0]; 742 #else 743 /* Translate the IRQ using the IRQ mapping table. */ 744 if (i >= ARRAY_SIZE(cs8900_irq_map)) 745 printk("\ncs89x0: invalid ISA interrupt number %d\n", i); 746 else 747 i = cs8900_irq_map[i]; 748 749 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */ 750 } else { 751 int irq_map_buff[IRQ_MAP_LEN/2]; 752 753 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, 754 IRQ_MAP_LEN/2, 755 irq_map_buff) >= 0) { 756 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) 757 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8); 758 } 759 #endif 760 } 761 if (!dev->irq) 762 dev->irq = i; 763 } 764 765 printk(" IRQ %d", dev->irq); 766 767 #if ALLOW_DMA 768 if (lp->use_dma) { 769 get_dma_channel(dev); 770 printk(", DMA %d", dev->dma); 771 } 772 else 773 #endif 774 { 775 printk(", programmed I/O"); 776 } 777 778 /* print the ethernet address. */ 779 printk(", MAC %pM", dev->dev_addr); 780 781 dev->netdev_ops = &net_ops; 782 dev->watchdog_timeo = HZ; 783 784 printk("\n"); 785 if (net_debug) 786 printk("cs89x0_probe1() successful\n"); 787 788 retval = register_netdev(dev); 789 if (retval) 790 goto out3; 791 return 0; 792 out3: 793 writeword(dev->base_addr, ADD_PORT, PP_ChipID); 794 out2: 795 release_region(ioaddr & ~3, NETCARD_IO_EXTENT); 796 out1: 797 return retval; 798 } 799 800 801 /********************************* 802 * This page contains DMA routines 803 **********************************/ 804 805 #if ALLOW_DMA 806 807 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17) 808 809 static void 810 get_dma_channel(struct net_device *dev) 811 { 812 struct net_local *lp = netdev_priv(dev); 813 814 if (lp->dma) { 815 dev->dma = lp->dma; 816 lp->isa_config |= ISA_RxDMA; 817 } else { 818 if ((lp->isa_config & ANY_ISA_DMA) == 0) 819 return; 820 dev->dma = lp->isa_config & DMA_NO_MASK; 821 if (lp->chip_type == CS8900) 822 dev->dma += 5; 823 if (dev->dma < 5 || dev->dma > 7) { 824 lp->isa_config &= ~ANY_ISA_DMA; 825 return; 826 } 827 } 828 } 829 830 static void 831 write_dma(struct net_device *dev, int chip_type, int dma) 832 { 833 struct net_local *lp = netdev_priv(dev); 834 if ((lp->isa_config & ANY_ISA_DMA) == 0) 835 return; 836 if (chip_type == CS8900) { 837 writereg(dev, PP_CS8900_ISADMA, dma-5); 838 } else { 839 writereg(dev, PP_CS8920_ISADMA, dma); 840 } 841 } 842 843 static void 844 set_dma_cfg(struct net_device *dev) 845 { 846 struct net_local *lp = netdev_priv(dev); 847 848 if (lp->use_dma) { 849 if ((lp->isa_config & ANY_ISA_DMA) == 0) { 850 if (net_debug > 3) 851 printk("set_dma_cfg(): no DMA\n"); 852 return; 853 } 854 if (lp->isa_config & ISA_RxDMA) { 855 lp->curr_rx_cfg |= RX_DMA_ONLY; 856 if (net_debug > 3) 857 printk("set_dma_cfg(): RX_DMA_ONLY\n"); 858 } else { 859 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */ 860 if (net_debug > 3) 861 printk("set_dma_cfg(): AUTO_RX_DMA\n"); 862 } 863 } 864 } 865 866 static int 867 dma_bufcfg(struct net_device *dev) 868 { 869 struct net_local *lp = netdev_priv(dev); 870 if (lp->use_dma) 871 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0; 872 else 873 return 0; 874 } 875 876 static int 877 dma_busctl(struct net_device *dev) 878 { 879 int retval = 0; 880 struct net_local *lp = netdev_priv(dev); 881 if (lp->use_dma) { 882 if (lp->isa_config & ANY_ISA_DMA) 883 retval |= RESET_RX_DMA; /* Reset the DMA pointer */ 884 if (lp->isa_config & DMA_BURST) 885 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */ 886 if (lp->dmasize == 64) 887 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */ 888 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */ 889 } 890 return retval; 891 } 892 893 static void 894 dma_rx(struct net_device *dev) 895 { 896 struct net_local *lp = netdev_priv(dev); 897 struct sk_buff *skb; 898 int status, length; 899 unsigned char *bp = lp->rx_dma_ptr; 900 901 status = bp[0] + (bp[1]<<8); 902 length = bp[2] + (bp[3]<<8); 903 bp += 4; 904 if (net_debug > 5) { 905 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n", 906 dev->name, (unsigned long)bp, status, length); 907 } 908 if ((status & RX_OK) == 0) { 909 count_rx_errors(status, dev); 910 goto skip_this_frame; 911 } 912 913 /* Malloc up new buffer. */ 914 skb = dev_alloc_skb(length + 2); 915 if (skb == NULL) { 916 if (net_debug) /* I don't think we want to do this to a stressed system */ 917 printk("%s: Memory squeeze, dropping packet.\n", dev->name); 918 dev->stats.rx_dropped++; 919 920 /* AKPM: advance bp to the next frame */ 921 skip_this_frame: 922 bp += (length + 3) & ~3; 923 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; 924 lp->rx_dma_ptr = bp; 925 return; 926 } 927 skb_reserve(skb, 2); /* longword align L3 header */ 928 929 if (bp + length > lp->end_dma_buff) { 930 int semi_cnt = lp->end_dma_buff - bp; 931 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt); 932 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff, 933 length - semi_cnt); 934 } else { 935 memcpy(skb_put(skb,length), bp, length); 936 } 937 bp += (length + 3) & ~3; 938 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; 939 lp->rx_dma_ptr = bp; 940 941 if (net_debug > 3) { 942 printk( "%s: received %d byte DMA packet of type %x\n", 943 dev->name, length, 944 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); 945 } 946 skb->protocol=eth_type_trans(skb,dev); 947 netif_rx(skb); 948 dev->stats.rx_packets++; 949 dev->stats.rx_bytes += length; 950 } 951 952 #endif /* ALLOW_DMA */ 953 954 static void __init reset_chip(struct net_device *dev) 955 { 956 #if !defined(CONFIG_MACH_MX31ADS) 957 #if !defined(CS89x0_NONISA_IRQ) 958 struct net_local *lp = netdev_priv(dev); 959 int ioaddr = dev->base_addr; 960 #endif /* CS89x0_NONISA_IRQ */ 961 int reset_start_time; 962 963 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET); 964 965 /* wait 30 ms */ 966 msleep(30); 967 968 #if !defined(CS89x0_NONISA_IRQ) 969 if (lp->chip_type != CS8900) { 970 /* Hardware problem requires PNP registers to be reconfigured after a reset */ 971 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT); 972 outb(dev->irq, ioaddr + DATA_PORT); 973 outb(0, ioaddr + DATA_PORT + 1); 974 975 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB); 976 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT); 977 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1); 978 } 979 #endif /* CS89x0_NONISA_IRQ */ 980 981 /* Wait until the chip is reset */ 982 reset_start_time = jiffies; 983 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) 984 ; 985 #endif /* !CONFIG_MACH_MX31ADS */ 986 } 987 988 989 static void 990 control_dc_dc(struct net_device *dev, int on_not_off) 991 { 992 struct net_local *lp = netdev_priv(dev); 993 unsigned int selfcontrol; 994 int timenow = jiffies; 995 /* control the DC to DC convertor in the SelfControl register. 996 Note: This is hooked up to a general purpose pin, might not 997 always be a DC to DC convertor. */ 998 999 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ 1000 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) 1001 selfcontrol |= HCB1; 1002 else 1003 selfcontrol &= ~HCB1; 1004 writereg(dev, PP_SelfCTL, selfcontrol); 1005 1006 /* Wait for the DC/DC converter to power up - 500ms */ 1007 while (jiffies - timenow < HZ) 1008 ; 1009 } 1010 1011 #define DETECTED_NONE 0 1012 #define DETECTED_RJ45H 1 1013 #define DETECTED_RJ45F 2 1014 #define DETECTED_AUI 3 1015 #define DETECTED_BNC 4 1016 1017 static int 1018 detect_tp(struct net_device *dev) 1019 { 1020 struct net_local *lp = netdev_priv(dev); 1021 int timenow = jiffies; 1022 int fdx; 1023 1024 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name); 1025 1026 /* If connected to another full duplex capable 10-Base-T card the link pulses 1027 seem to be lost when the auto detect bit in the LineCTL is set. 1028 To overcome this the auto detect bit will be cleared whilst testing the 1029 10-Base-T interface. This would not be necessary for the sparrow chip but 1030 is simpler to do it anyway. */ 1031 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY); 1032 control_dc_dc(dev, 0); 1033 1034 /* Delay for the hardware to work out if the TP cable is present - 150ms */ 1035 for (timenow = jiffies; jiffies - timenow < 15; ) 1036 ; 1037 if ((readreg(dev, PP_LineST) & LINK_OK) == 0) 1038 return DETECTED_NONE; 1039 1040 if (lp->chip_type == CS8900) { 1041 switch (lp->force & 0xf0) { 1042 #if 0 1043 case FORCE_AUTO: 1044 printk("%s: cs8900 doesn't autonegotiate\n",dev->name); 1045 return DETECTED_NONE; 1046 #endif 1047 /* CS8900 doesn't support AUTO, change to HALF*/ 1048 case FORCE_AUTO: 1049 lp->force &= ~FORCE_AUTO; 1050 lp->force |= FORCE_HALF; 1051 break; 1052 case FORCE_HALF: 1053 break; 1054 case FORCE_FULL: 1055 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900); 1056 break; 1057 } 1058 fdx = readreg(dev, PP_TestCTL) & FDX_8900; 1059 } else { 1060 switch (lp->force & 0xf0) { 1061 case FORCE_AUTO: 1062 lp->auto_neg_cnf = AUTO_NEG_ENABLE; 1063 break; 1064 case FORCE_HALF: 1065 lp->auto_neg_cnf = 0; 1066 break; 1067 case FORCE_FULL: 1068 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; 1069 break; 1070 } 1071 1072 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); 1073 1074 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { 1075 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name); 1076 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { 1077 if (jiffies - timenow > 4000) { 1078 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n"); 1079 break; 1080 } 1081 } 1082 } 1083 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE; 1084 } 1085 if (fdx) 1086 return DETECTED_RJ45F; 1087 else 1088 return DETECTED_RJ45H; 1089 } 1090 1091 /* send a test packet - return true if carrier bits are ok */ 1092 static int 1093 send_test_pkt(struct net_device *dev) 1094 { 1095 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, 1096 0, 46, /* A 46 in network order */ 1097 0, 0, /* DSAP=0 & SSAP=0 fields */ 1098 0xf3, 0 /* Control (Test Req + P bit set) */ }; 1099 long timenow = jiffies; 1100 1101 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); 1102 1103 memcpy(test_packet, dev->dev_addr, ETH_ALEN); 1104 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN); 1105 1106 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL); 1107 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN); 1108 1109 /* Test to see if the chip has allocated memory for the packet */ 1110 while (jiffies - timenow < 5) 1111 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW) 1112 break; 1113 if (jiffies - timenow >= 5) 1114 return 0; /* this shouldn't happen */ 1115 1116 /* Write the contents of the packet */ 1117 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1); 1118 1119 if (net_debug > 1) printk("Sending test packet "); 1120 /* wait a couple of jiffies for packet to be received */ 1121 for (timenow = jiffies; jiffies - timenow < 3; ) 1122 ; 1123 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { 1124 if (net_debug > 1) printk("succeeded\n"); 1125 return 1; 1126 } 1127 if (net_debug > 1) printk("failed\n"); 1128 return 0; 1129 } 1130 1131 1132 static int 1133 detect_aui(struct net_device *dev) 1134 { 1135 struct net_local *lp = netdev_priv(dev); 1136 1137 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name); 1138 control_dc_dc(dev, 0); 1139 1140 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); 1141 1142 if (send_test_pkt(dev)) 1143 return DETECTED_AUI; 1144 else 1145 return DETECTED_NONE; 1146 } 1147 1148 static int 1149 detect_bnc(struct net_device *dev) 1150 { 1151 struct net_local *lp = netdev_priv(dev); 1152 1153 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name); 1154 control_dc_dc(dev, 1); 1155 1156 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); 1157 1158 if (send_test_pkt(dev)) 1159 return DETECTED_BNC; 1160 else 1161 return DETECTED_NONE; 1162 } 1163 1164 1165 static void 1166 write_irq(struct net_device *dev, int chip_type, int irq) 1167 { 1168 int i; 1169 1170 if (chip_type == CS8900) { 1171 /* Search the mapping table for the corresponding IRQ pin. */ 1172 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++) 1173 if (cs8900_irq_map[i] == irq) 1174 break; 1175 /* Not found */ 1176 if (i == ARRAY_SIZE(cs8900_irq_map)) 1177 i = 3; 1178 writereg(dev, PP_CS8900_ISAINT, i); 1179 } else { 1180 writereg(dev, PP_CS8920_ISAINT, irq); 1181 } 1182 } 1183 1184 /* Open/initialize the board. This is called (in the current kernel) 1185 sometime after booting when the 'ifconfig' program is run. 1186 1187 This routine should set everything up anew at each open, even 1188 registers that "should" only need to be set once at boot, so that 1189 there is non-reboot way to recover if something goes wrong. 1190 */ 1191 1192 /* AKPM: do we need to do any locking here? */ 1193 1194 static int 1195 net_open(struct net_device *dev) 1196 { 1197 struct net_local *lp = netdev_priv(dev); 1198 int result = 0; 1199 int i; 1200 int ret; 1201 1202 if (dev->irq < 2) { 1203 /* Allow interrupts to be generated by the chip */ 1204 /* Cirrus' release had this: */ 1205 #if 0 1206 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); 1207 #endif 1208 /* And 2.3.47 had this: */ 1209 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); 1210 1211 for (i = 2; i < CS8920_NO_INTS; i++) { 1212 if ((1 << i) & lp->irq_map) { 1213 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) { 1214 dev->irq = i; 1215 write_irq(dev, lp->chip_type, i); 1216 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */ 1217 break; 1218 } 1219 } 1220 } 1221 1222 if (i >= CS8920_NO_INTS) { 1223 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */ 1224 printk(KERN_ERR "cs89x0: can't get an interrupt\n"); 1225 ret = -EAGAIN; 1226 goto bad_out; 1227 } 1228 } 1229 else 1230 { 1231 #ifndef CONFIG_CS89x0_NONISA_IRQ 1232 if (((1 << dev->irq) & lp->irq_map) == 0) { 1233 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", 1234 dev->name, dev->irq, lp->irq_map); 1235 ret = -EAGAIN; 1236 goto bad_out; 1237 } 1238 #endif 1239 /* FIXME: Cirrus' release had this: */ 1240 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); 1241 /* And 2.3.47 had this: */ 1242 #if 0 1243 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); 1244 #endif 1245 write_irq(dev, lp->chip_type, dev->irq); 1246 ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev); 1247 if (ret) { 1248 printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq); 1249 goto bad_out; 1250 } 1251 } 1252 1253 #if ALLOW_DMA 1254 if (lp->use_dma) { 1255 if (lp->isa_config & ANY_ISA_DMA) { 1256 unsigned long flags; 1257 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, 1258 get_order(lp->dmasize * 1024)); 1259 1260 if (!lp->dma_buff) { 1261 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize); 1262 goto release_irq; 1263 } 1264 if (net_debug > 1) { 1265 printk( "%s: dma %lx %lx\n", 1266 dev->name, 1267 (unsigned long)lp->dma_buff, 1268 (unsigned long)isa_virt_to_bus(lp->dma_buff)); 1269 } 1270 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS || 1271 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) { 1272 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name); 1273 goto release_irq; 1274 } 1275 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */ 1276 if (request_dma(dev->dma, dev->name)) { 1277 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma); 1278 goto release_irq; 1279 } 1280 write_dma(dev, lp->chip_type, dev->dma); 1281 lp->rx_dma_ptr = lp->dma_buff; 1282 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024; 1283 spin_lock_irqsave(&lp->lock, flags); 1284 disable_dma(dev->dma); 1285 clear_dma_ff(dev->dma); 1286 set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */ 1287 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff)); 1288 set_dma_count(dev->dma, lp->dmasize*1024); 1289 enable_dma(dev->dma); 1290 spin_unlock_irqrestore(&lp->lock, flags); 1291 } 1292 } 1293 #endif /* ALLOW_DMA */ 1294 1295 /* set the Ethernet address */ 1296 for (i=0; i < ETH_ALEN/2; i++) 1297 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); 1298 1299 /* while we're testing the interface, leave interrupts disabled */ 1300 writereg(dev, PP_BusCTL, MEMORY_ON); 1301 1302 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ 1303 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) 1304 lp->linectl = LOW_RX_SQUELCH; 1305 else 1306 lp->linectl = 0; 1307 1308 /* check to make sure that they have the "right" hardware available */ 1309 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { 1310 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break; 1311 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break; 1312 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break; 1313 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); 1314 } 1315 if (!result) { 1316 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); 1317 release_dma: 1318 #if ALLOW_DMA 1319 free_dma(dev->dma); 1320 release_irq: 1321 release_dma_buff(lp); 1322 #endif 1323 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); 1324 free_irq(dev->irq, dev); 1325 ret = -EAGAIN; 1326 goto bad_out; 1327 } 1328 1329 /* set the hardware to the configured choice */ 1330 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { 1331 case A_CNF_MEDIA_10B_T: 1332 result = detect_tp(dev); 1333 if (result==DETECTED_NONE) { 1334 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); 1335 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ 1336 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ 1337 } 1338 break; 1339 case A_CNF_MEDIA_AUI: 1340 result = detect_aui(dev); 1341 if (result==DETECTED_NONE) { 1342 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); 1343 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ 1344 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ 1345 } 1346 break; 1347 case A_CNF_MEDIA_10B_2: 1348 result = detect_bnc(dev); 1349 if (result==DETECTED_NONE) { 1350 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); 1351 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ 1352 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ 1353 } 1354 break; 1355 case A_CNF_MEDIA_AUTO: 1356 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); 1357 if (lp->adapter_cnf & A_CNF_10B_T) 1358 if ((result = detect_tp(dev)) != DETECTED_NONE) 1359 break; 1360 if (lp->adapter_cnf & A_CNF_AUI) 1361 if ((result = detect_aui(dev)) != DETECTED_NONE) 1362 break; 1363 if (lp->adapter_cnf & A_CNF_10B_2) 1364 if ((result = detect_bnc(dev)) != DETECTED_NONE) 1365 break; 1366 printk(KERN_ERR "%s: no media detected\n", dev->name); 1367 goto release_dma; 1368 } 1369 switch(result) { 1370 case DETECTED_NONE: 1371 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name); 1372 goto release_dma; 1373 case DETECTED_RJ45H: 1374 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name); 1375 break; 1376 case DETECTED_RJ45F: 1377 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name); 1378 break; 1379 case DETECTED_AUI: 1380 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name); 1381 break; 1382 case DETECTED_BNC: 1383 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name); 1384 break; 1385 } 1386 1387 /* Turn on both receive and transmit operations */ 1388 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); 1389 1390 /* Receive only error free packets addressed to this card */ 1391 lp->rx_mode = 0; 1392 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT); 1393 1394 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL; 1395 1396 if (lp->isa_config & STREAM_TRANSFER) 1397 lp->curr_rx_cfg |= RX_STREAM_ENBL; 1398 #if ALLOW_DMA 1399 set_dma_cfg(dev); 1400 #endif 1401 writereg(dev, PP_RxCFG, lp->curr_rx_cfg); 1402 1403 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | 1404 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); 1405 1406 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | 1407 #if ALLOW_DMA 1408 dma_bufcfg(dev) | 1409 #endif 1410 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL); 1411 1412 /* now that we've got our act together, enable everything */ 1413 writereg(dev, PP_BusCTL, ENABLE_IRQ 1414 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */ 1415 #if ALLOW_DMA 1416 | dma_busctl(dev) 1417 #endif 1418 ); 1419 netif_start_queue(dev); 1420 if (net_debug > 1) 1421 printk("cs89x0: net_open() succeeded\n"); 1422 return 0; 1423 bad_out: 1424 return ret; 1425 } 1426 1427 static void net_timeout(struct net_device *dev) 1428 { 1429 /* If we get here, some higher level has decided we are broken. 1430 There should really be a "kick me" function call instead. */ 1431 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name, 1432 tx_done(dev) ? "IRQ conflict ?" : "network cable problem"); 1433 /* Try to restart the adaptor. */ 1434 netif_wake_queue(dev); 1435 } 1436 1437 static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev) 1438 { 1439 struct net_local *lp = netdev_priv(dev); 1440 unsigned long flags; 1441 1442 if (net_debug > 3) { 1443 printk("%s: sent %d byte packet of type %x\n", 1444 dev->name, skb->len, 1445 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); 1446 } 1447 1448 /* keep the upload from being interrupted, since we 1449 ask the chip to start transmitting before the 1450 whole packet has been completely uploaded. */ 1451 1452 spin_lock_irqsave(&lp->lock, flags); 1453 netif_stop_queue(dev); 1454 1455 /* initiate a transmit sequence */ 1456 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd); 1457 writeword(dev->base_addr, TX_LEN_PORT, skb->len); 1458 1459 /* Test to see if the chip has allocated memory for the packet */ 1460 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) { 1461 /* 1462 * Gasp! It hasn't. But that shouldn't happen since 1463 * we're waiting for TxOk, so return 1 and requeue this packet. 1464 */ 1465 1466 spin_unlock_irqrestore(&lp->lock, flags); 1467 if (net_debug) printk("cs89x0: Tx buffer not free!\n"); 1468 return NETDEV_TX_BUSY; 1469 } 1470 /* Write the contents of the packet */ 1471 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1); 1472 spin_unlock_irqrestore(&lp->lock, flags); 1473 dev->stats.tx_bytes += skb->len; 1474 dev_kfree_skb (skb); 1475 1476 /* 1477 * We DO NOT call netif_wake_queue() here. 1478 * We also DO NOT call netif_start_queue(). 1479 * 1480 * Either of these would cause another bottom half run through 1481 * net_send_packet() before this packet has fully gone out. That causes 1482 * us to hit the "Gasp!" above and the send is rescheduled. it runs like 1483 * a dog. We just return and wait for the Tx completion interrupt handler 1484 * to restart the netdevice layer 1485 */ 1486 1487 return NETDEV_TX_OK; 1488 } 1489 1490 /* The typical workload of the driver: 1491 Handle the network interface interrupts. */ 1492 1493 static irqreturn_t net_interrupt(int irq, void *dev_id) 1494 { 1495 struct net_device *dev = dev_id; 1496 struct net_local *lp; 1497 int ioaddr, status; 1498 int handled = 0; 1499 1500 ioaddr = dev->base_addr; 1501 lp = netdev_priv(dev); 1502 1503 /* we MUST read all the events out of the ISQ, otherwise we'll never 1504 get interrupted again. As a consequence, we can't have any limit 1505 on the number of times we loop in the interrupt handler. The 1506 hardware guarantees that eventually we'll run out of events. Of 1507 course, if you're on a slow machine, and packets are arriving 1508 faster than you can read them off, you're screwed. Hasta la 1509 vista, baby! */ 1510 while ((status = readword(dev->base_addr, ISQ_PORT))) { 1511 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status); 1512 handled = 1; 1513 switch(status & ISQ_EVENT_MASK) { 1514 case ISQ_RECEIVER_EVENT: 1515 /* Got a packet(s). */ 1516 net_rx(dev); 1517 break; 1518 case ISQ_TRANSMITTER_EVENT: 1519 dev->stats.tx_packets++; 1520 netif_wake_queue(dev); /* Inform upper layers. */ 1521 if ((status & ( TX_OK | 1522 TX_LOST_CRS | 1523 TX_SQE_ERROR | 1524 TX_LATE_COL | 1525 TX_16_COL)) != TX_OK) { 1526 if ((status & TX_OK) == 0) 1527 dev->stats.tx_errors++; 1528 if (status & TX_LOST_CRS) 1529 dev->stats.tx_carrier_errors++; 1530 if (status & TX_SQE_ERROR) 1531 dev->stats.tx_heartbeat_errors++; 1532 if (status & TX_LATE_COL) 1533 dev->stats.tx_window_errors++; 1534 if (status & TX_16_COL) 1535 dev->stats.tx_aborted_errors++; 1536 } 1537 break; 1538 case ISQ_BUFFER_EVENT: 1539 if (status & READY_FOR_TX) { 1540 /* we tried to transmit a packet earlier, 1541 but inexplicably ran out of buffers. 1542 That shouldn't happen since we only ever 1543 load one packet. Shrug. Do the right 1544 thing anyway. */ 1545 netif_wake_queue(dev); /* Inform upper layers. */ 1546 } 1547 if (status & TX_UNDERRUN) { 1548 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name); 1549 lp->send_underrun++; 1550 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381; 1551 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL; 1552 /* transmit cycle is done, although 1553 frame wasn't transmitted - this 1554 avoids having to wait for the upper 1555 layers to timeout on us, in the 1556 event of a tx underrun */ 1557 netif_wake_queue(dev); /* Inform upper layers. */ 1558 } 1559 #if ALLOW_DMA 1560 if (lp->use_dma && (status & RX_DMA)) { 1561 int count = readreg(dev, PP_DmaFrameCnt); 1562 while(count) { 1563 if (net_debug > 5) 1564 printk("%s: receiving %d DMA frames\n", dev->name, count); 1565 if (net_debug > 2 && count >1) 1566 printk("%s: receiving %d DMA frames\n", dev->name, count); 1567 dma_rx(dev); 1568 if (--count == 0) 1569 count = readreg(dev, PP_DmaFrameCnt); 1570 if (net_debug > 2 && count > 0) 1571 printk("%s: continuing with %d DMA frames\n", dev->name, count); 1572 } 1573 } 1574 #endif 1575 break; 1576 case ISQ_RX_MISS_EVENT: 1577 dev->stats.rx_missed_errors += (status >> 6); 1578 break; 1579 case ISQ_TX_COL_EVENT: 1580 dev->stats.collisions += (status >> 6); 1581 break; 1582 } 1583 } 1584 return IRQ_RETVAL(handled); 1585 } 1586 1587 static void 1588 count_rx_errors(int status, struct net_device *dev) 1589 { 1590 dev->stats.rx_errors++; 1591 if (status & RX_RUNT) 1592 dev->stats.rx_length_errors++; 1593 if (status & RX_EXTRA_DATA) 1594 dev->stats.rx_length_errors++; 1595 if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT))) 1596 /* per str 172 */ 1597 dev->stats.rx_crc_errors++; 1598 if (status & RX_DRIBBLE) 1599 dev->stats.rx_frame_errors++; 1600 } 1601 1602 /* We have a good packet(s), get it/them out of the buffers. */ 1603 static void 1604 net_rx(struct net_device *dev) 1605 { 1606 struct sk_buff *skb; 1607 int status, length; 1608 1609 int ioaddr = dev->base_addr; 1610 status = readword(ioaddr, RX_FRAME_PORT); 1611 length = readword(ioaddr, RX_FRAME_PORT); 1612 1613 if ((status & RX_OK) == 0) { 1614 count_rx_errors(status, dev); 1615 return; 1616 } 1617 1618 /* Malloc up new buffer. */ 1619 skb = dev_alloc_skb(length + 2); 1620 if (skb == NULL) { 1621 #if 0 /* Again, this seems a cruel thing to do */ 1622 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name); 1623 #endif 1624 dev->stats.rx_dropped++; 1625 return; 1626 } 1627 skb_reserve(skb, 2); /* longword align L3 header */ 1628 1629 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1); 1630 if (length & 1) 1631 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT); 1632 1633 if (net_debug > 3) { 1634 printk( "%s: received %d byte packet of type %x\n", 1635 dev->name, length, 1636 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); 1637 } 1638 1639 skb->protocol=eth_type_trans(skb,dev); 1640 netif_rx(skb); 1641 dev->stats.rx_packets++; 1642 dev->stats.rx_bytes += length; 1643 } 1644 1645 #if ALLOW_DMA 1646 static void release_dma_buff(struct net_local *lp) 1647 { 1648 if (lp->dma_buff) { 1649 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024)); 1650 lp->dma_buff = NULL; 1651 } 1652 } 1653 #endif 1654 1655 /* The inverse routine to net_open(). */ 1656 static int 1657 net_close(struct net_device *dev) 1658 { 1659 #if ALLOW_DMA 1660 struct net_local *lp = netdev_priv(dev); 1661 #endif 1662 1663 netif_stop_queue(dev); 1664 1665 writereg(dev, PP_RxCFG, 0); 1666 writereg(dev, PP_TxCFG, 0); 1667 writereg(dev, PP_BufCFG, 0); 1668 writereg(dev, PP_BusCTL, 0); 1669 1670 free_irq(dev->irq, dev); 1671 1672 #if ALLOW_DMA 1673 if (lp->use_dma && lp->dma) { 1674 free_dma(dev->dma); 1675 release_dma_buff(lp); 1676 } 1677 #endif 1678 1679 /* Update the statistics here. */ 1680 return 0; 1681 } 1682 1683 /* Get the current statistics. This may be called with the card open or 1684 closed. */ 1685 static struct net_device_stats * 1686 net_get_stats(struct net_device *dev) 1687 { 1688 struct net_local *lp = netdev_priv(dev); 1689 unsigned long flags; 1690 1691 spin_lock_irqsave(&lp->lock, flags); 1692 /* Update the statistics from the device registers. */ 1693 dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6); 1694 dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6); 1695 spin_unlock_irqrestore(&lp->lock, flags); 1696 1697 return &dev->stats; 1698 } 1699 1700 static void set_multicast_list(struct net_device *dev) 1701 { 1702 struct net_local *lp = netdev_priv(dev); 1703 unsigned long flags; 1704 1705 spin_lock_irqsave(&lp->lock, flags); 1706 if(dev->flags&IFF_PROMISC) 1707 { 1708 lp->rx_mode = RX_ALL_ACCEPT; 1709 } 1710 else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) 1711 { 1712 /* The multicast-accept list is initialized to accept-all, and we 1713 rely on higher-level filtering for now. */ 1714 lp->rx_mode = RX_MULTCAST_ACCEPT; 1715 } 1716 else 1717 lp->rx_mode = 0; 1718 1719 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode); 1720 1721 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */ 1722 writereg(dev, PP_RxCFG, lp->curr_rx_cfg | 1723 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0)); 1724 spin_unlock_irqrestore(&lp->lock, flags); 1725 } 1726 1727 1728 static int set_mac_address(struct net_device *dev, void *p) 1729 { 1730 int i; 1731 struct sockaddr *addr = p; 1732 1733 if (netif_running(dev)) 1734 return -EBUSY; 1735 1736 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 1737 1738 if (net_debug) 1739 printk("%s: Setting MAC address to %pM.\n", 1740 dev->name, dev->dev_addr); 1741 1742 /* set the Ethernet address */ 1743 for (i=0; i < ETH_ALEN/2; i++) 1744 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); 1745 1746 return 0; 1747 } 1748 1749 #ifdef MODULE 1750 1751 static struct net_device *dev_cs89x0; 1752 1753 /* 1754 * Support the 'debug' module parm even if we're compiled for non-debug to 1755 * avoid breaking someone's startup scripts 1756 */ 1757 1758 static int io; 1759 static int irq; 1760 static int debug; 1761 static char media[8]; 1762 static int duplex=-1; 1763 1764 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */ 1765 static int dma; 1766 static int dmasize=16; /* or 64 */ 1767 1768 module_param(io, int, 0); 1769 module_param(irq, int, 0); 1770 module_param(debug, int, 0); 1771 module_param_string(media, media, sizeof(media), 0); 1772 module_param(duplex, int, 0); 1773 module_param(dma , int, 0); 1774 module_param(dmasize , int, 0); 1775 module_param(use_dma , int, 0); 1776 MODULE_PARM_DESC(io, "cs89x0 I/O base address"); 1777 MODULE_PARM_DESC(irq, "cs89x0 IRQ number"); 1778 #if DEBUGGING 1779 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)"); 1780 #else 1781 MODULE_PARM_DESC(debug, "(ignored)"); 1782 #endif 1783 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)"); 1784 /* No other value than -1 for duplex seems to be currently interpreted */ 1785 MODULE_PARM_DESC(duplex, "(ignored)"); 1786 #if ALLOW_DMA 1787 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0"); 1788 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0"); 1789 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)"); 1790 #else 1791 MODULE_PARM_DESC(dma , "(ignored)"); 1792 MODULE_PARM_DESC(dmasize , "(ignored)"); 1793 MODULE_PARM_DESC(use_dma , "(ignored)"); 1794 #endif 1795 1796 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton"); 1797 MODULE_LICENSE("GPL"); 1798 1799 1800 /* 1801 * media=t - specify media type 1802 or media=2 1803 or media=aui 1804 or medai=auto 1805 * duplex=0 - specify forced half/full/autonegotiate duplex 1806 * debug=# - debug level 1807 1808 1809 * Default Chip Configuration: 1810 * DMA Burst = enabled 1811 * IOCHRDY Enabled = enabled 1812 * UseSA = enabled 1813 * CS8900 defaults to half-duplex if not specified on command-line 1814 * CS8920 defaults to autoneg if not specified on command-line 1815 * Use reset defaults for other config parameters 1816 1817 * Assumptions: 1818 * media type specified is supported (circuitry is present) 1819 * if memory address is > 1MB, then required mem decode hw is present 1820 * if 10B-2, then agent other than driver will enable DC/DC converter 1821 (hw or software util) 1822 1823 1824 */ 1825 1826 int __init init_module(void) 1827 { 1828 struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); 1829 struct net_local *lp; 1830 int ret = 0; 1831 1832 #if DEBUGGING 1833 net_debug = debug; 1834 #else 1835 debug = 0; 1836 #endif 1837 if (!dev) 1838 return -ENOMEM; 1839 1840 dev->irq = irq; 1841 dev->base_addr = io; 1842 lp = netdev_priv(dev); 1843 1844 #if ALLOW_DMA 1845 if (use_dma) { 1846 lp->use_dma = use_dma; 1847 lp->dma = dma; 1848 lp->dmasize = dmasize; 1849 } 1850 #endif 1851 1852 spin_lock_init(&lp->lock); 1853 1854 /* boy, they'd better get these right */ 1855 if (!strcmp(media, "rj45")) 1856 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; 1857 else if (!strcmp(media, "aui")) 1858 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI; 1859 else if (!strcmp(media, "bnc")) 1860 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2; 1861 else 1862 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T; 1863 1864 if (duplex==-1) 1865 lp->auto_neg_cnf = AUTO_NEG_ENABLE; 1866 1867 if (io == 0) { 1868 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n"); 1869 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n"); 1870 ret = -EPERM; 1871 goto out; 1872 } else if (io <= 0x1ff) { 1873 ret = -ENXIO; 1874 goto out; 1875 } 1876 1877 #if ALLOW_DMA 1878 if (use_dma && dmasize != 16 && dmasize != 64) { 1879 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize); 1880 ret = -EPERM; 1881 goto out; 1882 } 1883 #endif 1884 ret = cs89x0_probe1(dev, io, 1); 1885 if (ret) 1886 goto out; 1887 1888 dev_cs89x0 = dev; 1889 return 0; 1890 out: 1891 free_netdev(dev); 1892 return ret; 1893 } 1894 1895 void __exit 1896 cleanup_module(void) 1897 { 1898 unregister_netdev(dev_cs89x0); 1899 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID); 1900 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT); 1901 free_netdev(dev_cs89x0); 1902 } 1903 #endif /* MODULE */ 1904 1905 /* 1906 * Local variables: 1907 * version-control: t 1908 * kept-new-versions: 5 1909 * c-indent-level: 8 1910 * tab-width: 8 1911 * End: 1912 * 1913 */ 1914