Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* Intel EtherExpress 16 device driver for Linux |
| 2 | * |
| 3 | * Written by John Sullivan, 1995 |
| 4 | * based on original code by Donald Becker, with changes by |
| 5 | * Alan Cox and Pauline Middelink. |
| 6 | * |
| 7 | * Support for 8-bit mode by Zoltan Szilagyi <zoltans@cs.arizona.edu> |
| 8 | * |
| 9 | * Many modifications, and currently maintained, by |
| 10 | * Philip Blundell <philb@gnu.org> |
Alan Cox | 113aa83 | 2008-10-13 19:01:08 -0700 | [diff] [blame] | 11 | * Added the Compaq LTE Alan Cox <alan@lxorguk.ukuu.org.uk> |
Joe Perches | 726a645 | 2008-02-03 16:36:24 +0200 | [diff] [blame] | 12 | * Added MCA support Adam Fritzler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * Note - this driver is experimental still - it has problems on faster |
| 15 | * machines. Someone needs to sit down and go through it line by line with |
| 16 | * a databook... |
| 17 | */ |
| 18 | |
| 19 | /* The EtherExpress 16 is a fairly simple card, based on a shared-memory |
| 20 | * design using the i82586 Ethernet coprocessor. It bears no relationship, |
| 21 | * as far as I know, to the similarly-named "EtherExpress Pro" range. |
| 22 | * |
| 23 | * Historically, Linux support for these cards has been very bad. However, |
| 24 | * things seem to be getting better slowly. |
| 25 | */ |
| 26 | |
| 27 | /* If your card is confused about what sort of interface it has (eg it |
| 28 | * persistently reports "10baseT" when none is fitted), running 'SOFTSET /BART' |
| 29 | * or 'SOFTSET /LISA' from DOS seems to help. |
| 30 | */ |
| 31 | |
| 32 | /* Here's the scoop on memory mapping. |
| 33 | * |
| 34 | * There are three ways to access EtherExpress card memory: either using the |
| 35 | * shared-memory mapping, or using PIO through the dataport, or using PIO |
| 36 | * through the "shadow memory" ports. |
| 37 | * |
| 38 | * The shadow memory system works by having the card map some of its memory |
| 39 | * as follows: |
| 40 | * |
| 41 | * (the low five bits of the SMPTR are ignored) |
| 42 | * |
| 43 | * base+0x4000..400f memory at SMPTR+0..15 |
| 44 | * base+0x8000..800f memory at SMPTR+16..31 |
| 45 | * base+0xc000..c007 dubious stuff (memory at SMPTR+16..23 apparently) |
| 46 | * base+0xc008..c00f memory at 0x0008..0x000f |
| 47 | * |
| 48 | * This last set (the one at c008) is particularly handy because the SCB |
| 49 | * lives at 0x0008. So that set of ports gives us easy random access to data |
| 50 | * in the SCB without having to mess around setting up pointers and the like. |
| 51 | * We always use this method to access the SCB (via the scb_xx() functions). |
| 52 | * |
| 53 | * Dataport access works by aiming the appropriate (read or write) pointer |
| 54 | * at the first address you're interested in, and then reading or writing from |
| 55 | * the dataport. The pointers auto-increment after each transfer. We use |
| 56 | * this for data transfer. |
| 57 | * |
| 58 | * We don't use the shared-memory system because it allegedly doesn't work on |
| 59 | * all cards, and because it's a bit more prone to go wrong (it's one more |
| 60 | * thing to configure...). |
| 61 | */ |
| 62 | |
| 63 | /* Known bugs: |
| 64 | * |
| 65 | * - The card seems to want to give us two interrupts every time something |
| 66 | * happens, where just one would be better. |
| 67 | */ |
| 68 | |
| 69 | /* |
| 70 | * |
| 71 | * Note by Zoltan Szilagyi 10-12-96: |
| 72 | * |
| 73 | * I've succeeded in eliminating the "CU wedged" messages, and hence the |
| 74 | * lockups, which were only occurring with cards running in 8-bit mode ("force |
| 75 | * 8-bit operation" in Intel's SoftSet utility). This version of the driver |
| 76 | * sets the 82586 and the ASIC to 8-bit mode at startup; it also stops the |
| 77 | * CU before submitting a packet for transmission, and then restarts it as soon |
| 78 | * as the process of handing the packet is complete. This is definitely an |
| 79 | * unnecessary slowdown if the card is running in 16-bit mode; therefore one |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 80 | * should detect 16-bit vs 8-bit mode from the EEPROM settings and act |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | * accordingly. In 8-bit mode with this bugfix I'm getting about 150 K/s for |
| 82 | * ftp's, which is significantly better than I get in DOS, so the overhead of |
| 83 | * stopping and restarting the CU with each transmit is not prohibitive in |
| 84 | * practice. |
| 85 | * |
| 86 | * Update by David Woodhouse 11/5/99: |
| 87 | * |
| 88 | * I've seen "CU wedged" messages in 16-bit mode, on the Alpha architecture. |
| 89 | * I assume that this is because 16-bit accesses are actually handled as two |
| 90 | * 8-bit accesses. |
| 91 | */ |
| 92 | |
| 93 | #ifdef __alpha__ |
| 94 | #define LOCKUP16 1 |
| 95 | #endif |
| 96 | #ifndef LOCKUP16 |
| 97 | #define LOCKUP16 0 |
| 98 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | #include <linux/module.h> |
| 101 | #include <linux/kernel.h> |
| 102 | #include <linux/types.h> |
| 103 | #include <linux/fcntl.h> |
| 104 | #include <linux/interrupt.h> |
| 105 | #include <linux/ioport.h> |
| 106 | #include <linux/string.h> |
| 107 | #include <linux/in.h> |
| 108 | #include <linux/delay.h> |
| 109 | #include <linux/errno.h> |
| 110 | #include <linux/init.h> |
| 111 | #include <linux/netdevice.h> |
| 112 | #include <linux/etherdevice.h> |
| 113 | #include <linux/skbuff.h> |
| 114 | #include <linux/slab.h> |
| 115 | #include <linux/mca-legacy.h> |
| 116 | #include <linux/spinlock.h> |
| 117 | #include <linux/bitops.h> |
Shani | d7ef45b | 2007-03-28 10:44:31 +0530 | [diff] [blame] | 118 | #include <linux/jiffies.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
| 120 | #include <asm/system.h> |
| 121 | #include <asm/io.h> |
| 122 | #include <asm/irq.h> |
| 123 | |
| 124 | #ifndef NET_DEBUG |
| 125 | #define NET_DEBUG 4 |
| 126 | #endif |
| 127 | |
| 128 | #include "eexpress.h" |
| 129 | |
| 130 | #define EEXP_IO_EXTENT 16 |
| 131 | |
| 132 | /* |
| 133 | * Private data declarations |
| 134 | */ |
| 135 | |
| 136 | struct net_local |
| 137 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | unsigned long last_tx; /* jiffies when last transmit started */ |
| 139 | unsigned long init_time; /* jiffies when eexp_hw_init586 called */ |
| 140 | unsigned short rx_first; /* first rx buf, same as RX_BUF_START */ |
| 141 | unsigned short rx_last; /* last rx buf */ |
| 142 | unsigned short rx_ptr; /* first rx buf to look at */ |
| 143 | unsigned short tx_head; /* next free tx buf */ |
| 144 | unsigned short tx_reap; /* first in-use tx buf */ |
| 145 | unsigned short tx_tail; /* previous tx buf to tx_head */ |
| 146 | unsigned short tx_link; /* last known-executing tx buf */ |
| 147 | unsigned short last_tx_restart; /* set to tx_link when we |
| 148 | restart the CU */ |
| 149 | unsigned char started; |
| 150 | unsigned short rx_buf_start; |
| 151 | unsigned short rx_buf_end; |
| 152 | unsigned short num_tx_bufs; |
| 153 | unsigned short num_rx_bufs; |
| 154 | unsigned char width; /* 0 for 16bit, 1 for 8bit */ |
| 155 | unsigned char was_promisc; |
| 156 | unsigned char old_mc_count; |
| 157 | spinlock_t lock; |
| 158 | }; |
| 159 | |
| 160 | /* This is the code and data that is downloaded to the EtherExpress card's |
| 161 | * memory at boot time. |
| 162 | */ |
| 163 | |
| 164 | static unsigned short start_code[] = { |
| 165 | /* 0x0000 */ |
| 166 | 0x0001, /* ISCP: busy - cleared after reset */ |
| 167 | 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */ |
| 168 | |
| 169 | 0x0000,0x0000, /* SCB: status, commands */ |
| 170 | 0x0000,0x0000, /* links to first command block, |
| 171 | first receive descriptor */ |
| 172 | 0x0000,0x0000, /* CRC error, alignment error counts */ |
| 173 | 0x0000,0x0000, /* out of resources, overrun error counts */ |
| 174 | |
| 175 | 0x0000,0x0000, /* pad */ |
| 176 | 0x0000,0x0000, |
| 177 | |
| 178 | /* 0x20 -- start of 82586 CU program */ |
| 179 | #define CONF_LINK 0x20 |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 180 | 0x0000,Cmd_Config, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | 0x0032, /* link to next command */ |
| 182 | 0x080c, /* 12 bytes follow : fifo threshold=8 */ |
| 183 | 0x2e40, /* don't rx bad frames |
| 184 | * SRDY/ARDY => ext. sync. : preamble len=8 |
| 185 | * take addresses from data buffers |
| 186 | * 6 bytes/address |
| 187 | */ |
| 188 | 0x6000, /* default backoff method & priority |
| 189 | * interframe spacing = 0x60 */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 190 | 0xf200, /* slot time=0x200 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | * max collision retry = 0xf */ |
| 192 | #define CONF_PROMISC 0x2e |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 193 | 0x0000, /* no HDLC : normal CRC : enable broadcast |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | * disable promiscuous/multicast modes */ |
| 195 | 0x003c, /* minimum frame length = 60 octets) */ |
| 196 | |
| 197 | 0x0000,Cmd_SetAddr, |
| 198 | 0x003e, /* link to next command */ |
| 199 | #define CONF_HWADDR 0x38 |
| 200 | 0x0000,0x0000,0x0000, /* hardware address placed here */ |
| 201 | |
| 202 | 0x0000,Cmd_MCast, |
| 203 | 0x0076, /* link to next command */ |
| 204 | #define CONF_NR_MULTICAST 0x44 |
Bruce Robson | 46fa061 | 2008-05-02 13:40:53 -0700 | [diff] [blame] | 205 | 0x0000, /* number of bytes in multicast address(es) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | #define CONF_MULTICAST 0x46 |
| 207 | 0x0000, 0x0000, 0x0000, /* some addresses */ |
| 208 | 0x0000, 0x0000, 0x0000, |
| 209 | 0x0000, 0x0000, 0x0000, |
| 210 | 0x0000, 0x0000, 0x0000, |
| 211 | 0x0000, 0x0000, 0x0000, |
| 212 | 0x0000, 0x0000, 0x0000, |
| 213 | 0x0000, 0x0000, 0x0000, |
| 214 | 0x0000, 0x0000, 0x0000, |
| 215 | |
| 216 | #define CONF_DIAG_RESULT 0x76 |
| 217 | 0x0000, Cmd_Diag, |
| 218 | 0x007c, /* link to next command */ |
| 219 | |
| 220 | 0x0000,Cmd_TDR|Cmd_INT, |
| 221 | 0x0084, |
| 222 | #define CONF_TDR_RESULT 0x82 |
| 223 | 0x0000, |
| 224 | |
| 225 | 0x0000,Cmd_END|Cmd_Nop, /* end of configure sequence */ |
| 226 | 0x0084 /* dummy link */ |
| 227 | }; |
| 228 | |
| 229 | /* maps irq number to EtherExpress magic value */ |
| 230 | static char irqrmap[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 }; |
| 231 | |
| 232 | #ifdef CONFIG_MCA_LEGACY |
| 233 | /* mapping of the first four bits of the second POS register */ |
| 234 | static unsigned short mca_iomap[] = { |
| 235 | 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200, |
| 236 | 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300 |
| 237 | }; |
| 238 | /* bits 5-7 of the second POS register */ |
| 239 | static char mca_irqmap[] = { 12, 9, 3, 4, 5, 10, 11, 15 }; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 240 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | /* |
| 243 | * Prototypes for Linux interface |
| 244 | */ |
| 245 | |
| 246 | static int eexp_open(struct net_device *dev); |
| 247 | static int eexp_close(struct net_device *dev); |
| 248 | static void eexp_timeout(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | static int eexp_xmit(struct sk_buff *buf, struct net_device *dev); |
| 250 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 251 | static irqreturn_t eexp_irq(int irq, void *dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | static void eexp_set_multicast(struct net_device *dev); |
| 253 | |
| 254 | /* |
| 255 | * Prototypes for hardware access functions |
| 256 | */ |
| 257 | |
| 258 | static void eexp_hw_rx_pio(struct net_device *dev); |
| 259 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, |
| 260 | unsigned short len); |
| 261 | static int eexp_hw_probe(struct net_device *dev,unsigned short ioaddr); |
| 262 | static unsigned short eexp_hw_readeeprom(unsigned short ioaddr, |
| 263 | unsigned char location); |
| 264 | |
| 265 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev); |
| 266 | static void eexp_hw_txrestart(struct net_device *dev); |
| 267 | |
| 268 | static void eexp_hw_txinit (struct net_device *dev); |
| 269 | static void eexp_hw_rxinit (struct net_device *dev); |
| 270 | |
| 271 | static void eexp_hw_init586 (struct net_device *dev); |
| 272 | static void eexp_setup_filter (struct net_device *dev); |
| 273 | |
| 274 | static char *eexp_ifmap[]={"AUI", "BNC", "RJ45"}; |
| 275 | enum eexp_iftype {AUI=0, BNC=1, TPE=2}; |
| 276 | |
| 277 | #define STARTED_RU 2 |
| 278 | #define STARTED_CU 1 |
| 279 | |
| 280 | /* |
| 281 | * Primitive hardware access functions. |
| 282 | */ |
| 283 | |
| 284 | static inline unsigned short scb_status(struct net_device *dev) |
| 285 | { |
| 286 | return inw(dev->base_addr + 0xc008); |
| 287 | } |
| 288 | |
| 289 | static inline unsigned short scb_rdcmd(struct net_device *dev) |
| 290 | { |
| 291 | return inw(dev->base_addr + 0xc00a); |
| 292 | } |
| 293 | |
| 294 | static inline void scb_command(struct net_device *dev, unsigned short cmd) |
| 295 | { |
| 296 | outw(cmd, dev->base_addr + 0xc00a); |
| 297 | } |
| 298 | |
| 299 | static inline void scb_wrcbl(struct net_device *dev, unsigned short val) |
| 300 | { |
| 301 | outw(val, dev->base_addr + 0xc00c); |
| 302 | } |
| 303 | |
| 304 | static inline void scb_wrrfa(struct net_device *dev, unsigned short val) |
| 305 | { |
| 306 | outw(val, dev->base_addr + 0xc00e); |
| 307 | } |
| 308 | |
| 309 | static inline void set_loopback(struct net_device *dev) |
| 310 | { |
| 311 | outb(inb(dev->base_addr + Config) | 2, dev->base_addr + Config); |
| 312 | } |
| 313 | |
| 314 | static inline void clear_loopback(struct net_device *dev) |
| 315 | { |
| 316 | outb(inb(dev->base_addr + Config) & ~2, dev->base_addr + Config); |
| 317 | } |
| 318 | |
| 319 | static inline unsigned short int SHADOW(short int addr) |
| 320 | { |
| 321 | addr &= 0x1f; |
| 322 | if (addr > 0xf) addr += 0x3ff0; |
| 323 | return addr + 0x4000; |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Linux interface |
| 328 | */ |
| 329 | |
| 330 | /* |
| 331 | * checks for presence of EtherExpress card |
| 332 | */ |
| 333 | |
| 334 | static int __init do_express_probe(struct net_device *dev) |
| 335 | { |
| 336 | unsigned short *port; |
| 337 | static unsigned short ports[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 }; |
| 338 | unsigned short ioaddr = dev->base_addr; |
| 339 | int dev_irq = dev->irq; |
| 340 | int err; |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | dev->if_port = 0xff; /* not set */ |
| 343 | |
| 344 | #ifdef CONFIG_MCA_LEGACY |
| 345 | if (MCA_bus) { |
| 346 | int slot = 0; |
| 347 | |
| 348 | /* |
| 349 | * Only find one card at a time. Subsequent calls |
| 350 | * will find others, however, proper multicard MCA |
| 351 | * probing and setup can't be done with the |
| 352 | * old-style Space.c init routines. -- ASF |
| 353 | */ |
| 354 | while (slot != MCA_NOTFOUND) { |
| 355 | int pos0, pos1; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | slot = mca_find_unused_adapter(0x628B, slot); |
| 358 | if (slot == MCA_NOTFOUND) |
| 359 | break; |
| 360 | |
| 361 | pos0 = mca_read_stored_pos(slot, 2); |
| 362 | pos1 = mca_read_stored_pos(slot, 3); |
| 363 | ioaddr = mca_iomap[pos1&0xf]; |
| 364 | |
| 365 | dev->irq = mca_irqmap[(pos1>>4)&0x7]; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | /* |
| 368 | * XXX: Transciever selection is done |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 369 | * differently on the MCA version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | * How to get it to select something |
| 371 | * other than external/AUI is currently |
| 372 | * unknown. This code is just for looks. -- ASF |
| 373 | */ |
| 374 | if ((pos0 & 0x7) == 0x1) |
| 375 | dev->if_port = AUI; |
| 376 | else if ((pos0 & 0x7) == 0x5) { |
| 377 | if (pos1 & 0x80) |
| 378 | dev->if_port = BNC; |
| 379 | else |
| 380 | dev->if_port = TPE; |
| 381 | } |
| 382 | |
| 383 | mca_set_adapter_name(slot, "Intel EtherExpress 16 MCA"); |
| 384 | mca_set_adapter_procfn(slot, NULL, dev); |
| 385 | mca_mark_as_used(slot); |
| 386 | |
| 387 | break; |
| 388 | } |
| 389 | } |
| 390 | #endif |
| 391 | if (ioaddr&0xfe00) { |
| 392 | if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) |
| 393 | return -EBUSY; |
| 394 | err = eexp_hw_probe(dev,ioaddr); |
| 395 | release_region(ioaddr, EEXP_IO_EXTENT); |
| 396 | return err; |
| 397 | } else if (ioaddr) |
| 398 | return -ENXIO; |
| 399 | |
| 400 | for (port=&ports[0] ; *port ; port++ ) |
| 401 | { |
| 402 | unsigned short sum = 0; |
| 403 | int i; |
| 404 | if (!request_region(*port, EEXP_IO_EXTENT, "EtherExpress")) |
| 405 | continue; |
| 406 | for ( i=0 ; i<4 ; i++ ) |
| 407 | { |
| 408 | unsigned short t; |
| 409 | t = inb(*port + ID_PORT); |
| 410 | sum |= (t>>4) << ((t & 0x03)<<2); |
| 411 | } |
| 412 | if (sum==0xbaba && !eexp_hw_probe(dev,*port)) { |
| 413 | release_region(*port, EEXP_IO_EXTENT); |
| 414 | return 0; |
| 415 | } |
| 416 | release_region(*port, EEXP_IO_EXTENT); |
| 417 | dev->irq = dev_irq; |
| 418 | } |
| 419 | return -ENODEV; |
| 420 | } |
| 421 | |
| 422 | #ifndef MODULE |
| 423 | struct net_device * __init express_probe(int unit) |
| 424 | { |
| 425 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); |
| 426 | int err; |
| 427 | |
| 428 | if (!dev) |
| 429 | return ERR_PTR(-ENOMEM); |
| 430 | |
| 431 | sprintf(dev->name, "eth%d", unit); |
| 432 | netdev_boot_setup_check(dev); |
| 433 | |
| 434 | err = do_express_probe(dev); |
| b1fc550 | 2005-05-12 20:11:55 -0400 | [diff] [blame] | 435 | if (!err) |
| 436 | return dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | free_netdev(dev); |
| 438 | return ERR_PTR(err); |
| 439 | } |
| 440 | #endif |
| 441 | |
| 442 | /* |
| 443 | * open and initialize the adapter, ready for use |
| 444 | */ |
| 445 | |
| 446 | static int eexp_open(struct net_device *dev) |
| 447 | { |
| 448 | int ret; |
| 449 | unsigned short ioaddr = dev->base_addr; |
| 450 | struct net_local *lp = netdev_priv(dev); |
| 451 | |
| 452 | #if NET_DEBUG > 6 |
| 453 | printk(KERN_DEBUG "%s: eexp_open()\n", dev->name); |
| 454 | #endif |
| 455 | |
| 456 | if (!dev->irq || !irqrmap[dev->irq]) |
| 457 | return -ENXIO; |
| 458 | |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 459 | ret = request_irq(dev->irq, &eexp_irq, 0, dev->name, dev); |
| 460 | if (ret) |
| 461 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
| 463 | if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) { |
| 464 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| 465 | , ioaddr); |
| 466 | goto err_out1; |
| 467 | } |
| 468 | if (!request_region(ioaddr+0x4000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| 469 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| 470 | , ioaddr+0x4000); |
| 471 | goto err_out2; |
| 472 | } |
| 473 | if (!request_region(ioaddr+0x8000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| 474 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| 475 | , ioaddr+0x8000); |
| 476 | goto err_out3; |
| 477 | } |
| 478 | if (!request_region(ioaddr+0xc000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| 479 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| 480 | , ioaddr+0xc000); |
| 481 | goto err_out4; |
| 482 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | if (lp->width) { |
| 485 | printk("%s: forcing ASIC to 8-bit mode\n", dev->name); |
| 486 | outb(inb(dev->base_addr+Config)&~4, dev->base_addr+Config); |
| 487 | } |
| 488 | |
| 489 | eexp_hw_init586(dev); |
| 490 | netif_start_queue(dev); |
| 491 | #if NET_DEBUG > 6 |
| 492 | printk(KERN_DEBUG "%s: leaving eexp_open()\n", dev->name); |
| 493 | #endif |
| 494 | return 0; |
| 495 | |
| 496 | err_out4: |
| 497 | release_region(ioaddr+0x8000, EEXP_IO_EXTENT); |
| 498 | err_out3: |
| 499 | release_region(ioaddr+0x4000, EEXP_IO_EXTENT); |
| 500 | err_out2: |
| 501 | release_region(ioaddr, EEXP_IO_EXTENT); |
| 502 | err_out1: |
| 503 | free_irq(dev->irq, dev); |
| 504 | return -EBUSY; |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * close and disable the interface, leaving the 586 in reset. |
| 509 | */ |
| 510 | |
| 511 | static int eexp_close(struct net_device *dev) |
| 512 | { |
| 513 | unsigned short ioaddr = dev->base_addr; |
| 514 | struct net_local *lp = netdev_priv(dev); |
| 515 | |
| 516 | int irq = dev->irq; |
| 517 | |
| 518 | netif_stop_queue(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 519 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | outb(SIRQ_dis|irqrmap[irq],ioaddr+SET_IRQ); |
| 521 | lp->started = 0; |
| 522 | scb_command(dev, SCB_CUsuspend|SCB_RUsuspend); |
| 523 | outb(0,ioaddr+SIGNAL_CA); |
| 524 | free_irq(irq,dev); |
| 525 | outb(i586_RST,ioaddr+EEPROM_Ctrl); |
| 526 | release_region(ioaddr, EEXP_IO_EXTENT); |
| 527 | release_region(ioaddr+0x4000, 16); |
| 528 | release_region(ioaddr+0x8000, 16); |
| 529 | release_region(ioaddr+0xc000, 16); |
| 530 | |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | * This gets called when a higher level thinks we are broken. Check that |
| 536 | * nothing has become jammed in the CU. |
| 537 | */ |
| 538 | |
| 539 | static void unstick_cu(struct net_device *dev) |
| 540 | { |
| 541 | struct net_local *lp = netdev_priv(dev); |
| 542 | unsigned short ioaddr = dev->base_addr; |
| 543 | |
| 544 | if (lp->started) |
| 545 | { |
Shani | d7ef45b | 2007-03-28 10:44:31 +0530 | [diff] [blame] | 546 | if (time_after(jiffies, dev->trans_start + 50)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | { |
| 548 | if (lp->tx_link==lp->last_tx_restart) |
| 549 | { |
| 550 | unsigned short boguscount=200,rsst; |
| 551 | printk(KERN_WARNING "%s: Retransmit timed out, status %04x, resetting...\n", |
| 552 | dev->name, scb_status(dev)); |
| 553 | eexp_hw_txinit(dev); |
| 554 | lp->last_tx_restart = 0; |
| 555 | scb_wrcbl(dev, lp->tx_link); |
| 556 | scb_command(dev, SCB_CUstart); |
| 557 | outb(0,ioaddr+SIGNAL_CA); |
| 558 | while (!SCB_complete(rsst=scb_status(dev))) |
| 559 | { |
| 560 | if (!--boguscount) |
| 561 | { |
| 562 | boguscount=200; |
| 563 | printk(KERN_WARNING "%s: Reset timed out status %04x, retrying...\n", |
| 564 | dev->name,rsst); |
| 565 | scb_wrcbl(dev, lp->tx_link); |
| 566 | scb_command(dev, SCB_CUstart); |
| 567 | outb(0,ioaddr+SIGNAL_CA); |
| 568 | } |
| 569 | } |
| 570 | netif_wake_queue(dev); |
| 571 | } |
| 572 | else |
| 573 | { |
| 574 | unsigned short status = scb_status(dev); |
| 575 | if (SCB_CUdead(status)) |
| 576 | { |
| 577 | unsigned short txstatus = eexp_hw_lasttxstat(dev); |
| 578 | printk(KERN_WARNING "%s: Transmit timed out, CU not active status %04x %04x, restarting...\n", |
| 579 | dev->name, status, txstatus); |
| 580 | eexp_hw_txrestart(dev); |
| 581 | } |
| 582 | else |
| 583 | { |
| 584 | unsigned short txstatus = eexp_hw_lasttxstat(dev); |
| 585 | if (netif_queue_stopped(dev) && !txstatus) |
| 586 | { |
| 587 | printk(KERN_WARNING "%s: CU wedged, status %04x %04x, resetting...\n", |
| 588 | dev->name,status,txstatus); |
| 589 | eexp_hw_init586(dev); |
| 590 | netif_wake_queue(dev); |
| 591 | } |
| 592 | else |
| 593 | { |
| 594 | printk(KERN_WARNING "%s: transmit timed out\n", dev->name); |
| 595 | } |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | } |
| 600 | else |
| 601 | { |
Shani | d7ef45b | 2007-03-28 10:44:31 +0530 | [diff] [blame] | 602 | if (time_after(jiffies, lp->init_time + 10)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
| 604 | unsigned short status = scb_status(dev); |
| 605 | printk(KERN_WARNING "%s: i82586 startup timed out, status %04x, resetting...\n", |
| 606 | dev->name, status); |
| 607 | eexp_hw_init586(dev); |
| 608 | netif_wake_queue(dev); |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | static void eexp_timeout(struct net_device *dev) |
| 614 | { |
| 615 | struct net_local *lp = netdev_priv(dev); |
| 616 | #ifdef CONFIG_SMP |
| 617 | unsigned long flags; |
| 618 | #endif |
| 619 | int status; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | disable_irq(dev->irq); |
| 622 | |
| 623 | /* |
| 624 | * Best would be to use synchronize_irq(); spin_lock() here |
| 625 | * lets make it work first.. |
| 626 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | #ifdef CONFIG_SMP |
| 629 | spin_lock_irqsave(&lp->lock, flags); |
| 630 | #endif |
| 631 | |
| 632 | status = scb_status(dev); |
| 633 | unstick_cu(dev); |
| 634 | printk(KERN_INFO "%s: transmit timed out, %s?\n", dev->name, |
| 635 | (SCB_complete(status)?"lost interrupt": |
| 636 | "board on fire")); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 637 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | lp->last_tx = jiffies; |
| 639 | if (!SCB_complete(status)) { |
| 640 | scb_command(dev, SCB_CUabort); |
| 641 | outb(0,dev->base_addr+SIGNAL_CA); |
| 642 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 643 | netif_wake_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | #ifdef CONFIG_SMP |
| 645 | spin_unlock_irqrestore(&lp->lock, flags); |
| 646 | #endif |
| 647 | } |
| 648 | |
| 649 | /* |
| 650 | * Called to transmit a packet, or to allow us to right ourselves |
| 651 | * if the kernel thinks we've died. |
| 652 | */ |
| 653 | static int eexp_xmit(struct sk_buff *buf, struct net_device *dev) |
| 654 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | short length = buf->len; |
| 656 | #ifdef CONFIG_SMP |
Jeff Garzik | 0e6f732 | 2007-10-23 18:36:42 -0400 | [diff] [blame] | 657 | struct net_local *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | unsigned long flags; |
| 659 | #endif |
| 660 | |
| 661 | #if NET_DEBUG > 6 |
| 662 | printk(KERN_DEBUG "%s: eexp_xmit()\n", dev->name); |
| 663 | #endif |
| 664 | |
| 665 | if (buf->len < ETH_ZLEN) { |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 666 | if (skb_padto(buf, ETH_ZLEN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | return 0; |
| 668 | length = ETH_ZLEN; |
| 669 | } |
| 670 | |
| 671 | disable_irq(dev->irq); |
| 672 | |
| 673 | /* |
| 674 | * Best would be to use synchronize_irq(); spin_lock() here |
| 675 | * lets make it work first.. |
| 676 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | #ifdef CONFIG_SMP |
| 679 | spin_lock_irqsave(&lp->lock, flags); |
| 680 | #endif |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 681 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | { |
| 683 | unsigned short *data = (unsigned short *)buf->data; |
| 684 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 685 | dev->stats.tx_bytes += length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
| 687 | eexp_hw_tx_pio(dev,data,length); |
| 688 | } |
| 689 | dev_kfree_skb(buf); |
| 690 | #ifdef CONFIG_SMP |
| 691 | spin_unlock_irqrestore(&lp->lock, flags); |
| 692 | #endif |
| 693 | enable_irq(dev->irq); |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Handle an EtherExpress interrupt |
| 699 | * If we've finished initializing, start the RU and CU up. |
| 700 | * If we've already started, reap tx buffers, handle any received packets, |
| 701 | * check to make sure we've not become wedged. |
| 702 | */ |
| 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | static unsigned short eexp_start_irq(struct net_device *dev, |
| 705 | unsigned short status) |
| 706 | { |
| 707 | unsigned short ack_cmd = SCB_ack(status); |
| 708 | struct net_local *lp = netdev_priv(dev); |
| 709 | unsigned short ioaddr = dev->base_addr; |
| 710 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_CU)) { |
| 711 | short diag_status, tdr_status; |
| 712 | while (SCB_CUstat(status)==2) |
| 713 | status = scb_status(dev); |
| 714 | #if NET_DEBUG > 4 |
| 715 | printk("%s: CU went non-active (status %04x)\n", |
| 716 | dev->name, status); |
| 717 | #endif |
| 718 | |
| 719 | outw(CONF_DIAG_RESULT & ~31, ioaddr + SM_PTR); |
| 720 | diag_status = inw(ioaddr + SHADOW(CONF_DIAG_RESULT)); |
| 721 | if (diag_status & 1<<11) { |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 722 | printk(KERN_WARNING "%s: 82586 failed self-test\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | dev->name); |
| 724 | } else if (!(diag_status & 1<<13)) { |
| 725 | printk(KERN_WARNING "%s: 82586 self-test failed to complete\n", dev->name); |
| 726 | } |
| 727 | |
| 728 | outw(CONF_TDR_RESULT & ~31, ioaddr + SM_PTR); |
| 729 | tdr_status = inw(ioaddr + SHADOW(CONF_TDR_RESULT)); |
| 730 | if (tdr_status & (TDR_SHORT|TDR_OPEN)) { |
| 731 | printk(KERN_WARNING "%s: TDR reports cable %s at %d tick%s\n", dev->name, (tdr_status & TDR_SHORT)?"short":"broken", tdr_status & TDR_TIME, ((tdr_status & TDR_TIME) != 1) ? "s" : ""); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 732 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | else if (tdr_status & TDR_XCVRPROBLEM) { |
| 734 | printk(KERN_WARNING "%s: TDR reports transceiver problem\n", dev->name); |
| 735 | } |
| 736 | else if (tdr_status & TDR_LINKOK) { |
| 737 | #if NET_DEBUG > 4 |
| 738 | printk(KERN_DEBUG "%s: TDR reports link OK\n", dev->name); |
| 739 | #endif |
| 740 | } else { |
| 741 | printk("%s: TDR is ga-ga (status %04x)\n", dev->name, |
| 742 | tdr_status); |
| 743 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | lp->started |= STARTED_CU; |
| 746 | scb_wrcbl(dev, lp->tx_link); |
| 747 | /* if the RU isn't running, start it now */ |
| 748 | if (!(lp->started & STARTED_RU)) { |
| 749 | ack_cmd |= SCB_RUstart; |
| 750 | scb_wrrfa(dev, lp->rx_buf_start); |
| 751 | lp->rx_ptr = lp->rx_buf_start; |
| 752 | lp->started |= STARTED_RU; |
| 753 | } |
| 754 | ack_cmd |= SCB_CUstart | 0x2000; |
| 755 | } |
| 756 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 757 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_RU) && SCB_RUstat(status)==4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | lp->started|=STARTED_RU; |
| 759 | |
| 760 | return ack_cmd; |
| 761 | } |
| 762 | |
| 763 | static void eexp_cmd_clear(struct net_device *dev) |
| 764 | { |
| 765 | unsigned long int oldtime = jiffies; |
Shani Moideen | 1c0d6dc | 2007-04-28 11:05:43 -0400 | [diff] [blame] | 766 | while (scb_rdcmd(dev) && (time_before(jiffies, oldtime + 10))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | if (scb_rdcmd(dev)) { |
| 768 | printk("%s: command didn't clear\n", dev->name); |
| 769 | } |
| 770 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 771 | |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 772 | static irqreturn_t eexp_irq(int dummy, void *dev_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | { |
| 774 | struct net_device *dev = dev_info; |
| 775 | struct net_local *lp; |
| 776 | unsigned short ioaddr,status,ack_cmd; |
| 777 | unsigned short old_read_ptr, old_write_ptr; |
| 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | lp = netdev_priv(dev); |
| 780 | ioaddr = dev->base_addr; |
| 781 | |
| 782 | spin_lock(&lp->lock); |
| 783 | |
| 784 | old_read_ptr = inw(ioaddr+READ_PTR); |
| 785 | old_write_ptr = inw(ioaddr+WRITE_PTR); |
| 786 | |
Jeff Garzik | cba0516 | 2007-11-23 21:50:34 -0500 | [diff] [blame] | 787 | outb(SIRQ_dis|irqrmap[dev->irq], ioaddr+SET_IRQ); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 788 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | status = scb_status(dev); |
| 790 | |
| 791 | #if NET_DEBUG > 4 |
| 792 | printk(KERN_DEBUG "%s: interrupt (status %x)\n", dev->name, status); |
| 793 | #endif |
| 794 | |
| 795 | if (lp->started == (STARTED_CU | STARTED_RU)) { |
| 796 | |
| 797 | do { |
| 798 | eexp_cmd_clear(dev); |
| 799 | |
| 800 | ack_cmd = SCB_ack(status); |
| 801 | scb_command(dev, ack_cmd); |
| 802 | outb(0,ioaddr+SIGNAL_CA); |
| 803 | |
| 804 | eexp_cmd_clear(dev); |
| 805 | |
| 806 | if (SCB_complete(status)) { |
| 807 | if (!eexp_hw_lasttxstat(dev)) { |
| 808 | printk("%s: tx interrupt but no status\n", dev->name); |
| 809 | } |
| 810 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 811 | |
| 812 | if (SCB_rxdframe(status)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | eexp_hw_rx_pio(dev); |
| 814 | |
| 815 | status = scb_status(dev); |
| 816 | } while (status & 0xc000); |
| 817 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 818 | if (SCB_RUdead(status)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | { |
| 820 | printk(KERN_WARNING "%s: RU stopped: status %04x\n", |
| 821 | dev->name,status); |
| 822 | #if 0 |
| 823 | printk(KERN_WARNING "%s: cur_rfd=%04x, cur_rbd=%04x\n", dev->name, lp->cur_rfd, lp->cur_rbd); |
| 824 | outw(lp->cur_rfd, ioaddr+READ_PTR); |
| 825 | printk(KERN_WARNING "%s: [%04x]\n", dev->name, inw(ioaddr+DATAPORT)); |
| 826 | outw(lp->cur_rfd+6, ioaddr+READ_PTR); |
| 827 | printk(KERN_WARNING "%s: rbd is %04x\n", dev->name, rbd= inw(ioaddr+DATAPORT)); |
| 828 | outw(rbd, ioaddr+READ_PTR); |
| 829 | printk(KERN_WARNING "%s: [%04x %04x] ", dev->name, inw(ioaddr+DATAPORT), inw(ioaddr+DATAPORT)); |
| 830 | outw(rbd+8, ioaddr+READ_PTR); |
| 831 | printk("[%04x]\n", inw(ioaddr+DATAPORT)); |
| 832 | #endif |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 833 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | #if 1 |
| 835 | eexp_hw_rxinit(dev); |
| 836 | #else |
| 837 | lp->cur_rfd = lp->first_rfd; |
| 838 | #endif |
| 839 | scb_wrrfa(dev, lp->rx_buf_start); |
| 840 | scb_command(dev, SCB_RUstart); |
| 841 | outb(0,ioaddr+SIGNAL_CA); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 842 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } else { |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 844 | if (status & 0x8000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | ack_cmd = eexp_start_irq(dev, status); |
| 846 | else |
| 847 | ack_cmd = SCB_ack(status); |
| 848 | scb_command(dev, ack_cmd); |
| 849 | outb(0,ioaddr+SIGNAL_CA); |
| 850 | } |
| 851 | |
| 852 | eexp_cmd_clear(dev); |
| 853 | |
Jeff Garzik | cba0516 | 2007-11-23 21:50:34 -0500 | [diff] [blame] | 854 | outb(SIRQ_en|irqrmap[dev->irq], ioaddr+SET_IRQ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 856 | #if NET_DEBUG > 6 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | printk("%s: leaving eexp_irq()\n", dev->name); |
| 858 | #endif |
| 859 | outw(old_read_ptr, ioaddr+READ_PTR); |
| 860 | outw(old_write_ptr, ioaddr+WRITE_PTR); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 861 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | spin_unlock(&lp->lock); |
| 863 | return IRQ_HANDLED; |
| 864 | } |
| 865 | |
| 866 | /* |
| 867 | * Hardware access functions |
| 868 | */ |
| 869 | |
| 870 | /* |
| 871 | * Set the cable type to use. |
| 872 | */ |
| 873 | |
| 874 | static void eexp_hw_set_interface(struct net_device *dev) |
| 875 | { |
| 876 | unsigned char oldval = inb(dev->base_addr + 0x300e); |
| 877 | oldval &= ~0x82; |
| 878 | switch (dev->if_port) { |
| 879 | case TPE: |
| 880 | oldval |= 0x2; |
| 881 | case BNC: |
| 882 | oldval |= 0x80; |
| 883 | break; |
| 884 | } |
| 885 | outb(oldval, dev->base_addr+0x300e); |
| 886 | mdelay(20); |
| 887 | } |
| 888 | |
| 889 | /* |
| 890 | * Check all the receive buffers, and hand any received packets |
| 891 | * to the upper levels. Basic sanity check on each frame |
| 892 | * descriptor, though we don't bother trying to fix broken ones. |
| 893 | */ |
| 894 | |
| 895 | static void eexp_hw_rx_pio(struct net_device *dev) |
| 896 | { |
| 897 | struct net_local *lp = netdev_priv(dev); |
| 898 | unsigned short rx_block = lp->rx_ptr; |
| 899 | unsigned short boguscount = lp->num_rx_bufs; |
| 900 | unsigned short ioaddr = dev->base_addr; |
| 901 | unsigned short status; |
| 902 | |
| 903 | #if NET_DEBUG > 6 |
| 904 | printk(KERN_DEBUG "%s: eexp_hw_rx()\n", dev->name); |
| 905 | #endif |
| 906 | |
| 907 | do { |
| 908 | unsigned short rfd_cmd, rx_next, pbuf, pkt_len; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 909 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | outw(rx_block, ioaddr + READ_PTR); |
| 911 | status = inw(ioaddr + DATAPORT); |
| 912 | |
| 913 | if (FD_Done(status)) |
| 914 | { |
| 915 | rfd_cmd = inw(ioaddr + DATAPORT); |
| 916 | rx_next = inw(ioaddr + DATAPORT); |
| 917 | pbuf = inw(ioaddr + DATAPORT); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | outw(pbuf, ioaddr + READ_PTR); |
| 920 | pkt_len = inw(ioaddr + DATAPORT); |
| 921 | |
| 922 | if (rfd_cmd!=0x0000) |
| 923 | { |
| 924 | printk(KERN_WARNING "%s: rfd_cmd not zero:0x%04x\n", |
| 925 | dev->name, rfd_cmd); |
| 926 | continue; |
| 927 | } |
| 928 | else if (pbuf!=rx_block+0x16) |
| 929 | { |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 930 | printk(KERN_WARNING "%s: rfd and rbd out of sync 0x%04x 0x%04x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | dev->name, rx_block+0x16, pbuf); |
| 932 | continue; |
| 933 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 934 | else if ((pkt_len & 0xc000)!=0xc000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | { |
| 936 | printk(KERN_WARNING "%s: EOF or F not set on received buffer (%04x)\n", |
| 937 | dev->name, pkt_len & 0xc000); |
| 938 | continue; |
| 939 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 940 | else if (!FD_OK(status)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 942 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | if (FD_CRC(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 944 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | if (FD_Align(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 946 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | if (FD_Resrc(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 948 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | if (FD_DMA(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 950 | dev->stats.rx_over_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | if (FD_Short(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 952 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | } |
| 954 | else |
| 955 | { |
| 956 | struct sk_buff *skb; |
| 957 | pkt_len &= 0x3fff; |
| 958 | skb = dev_alloc_skb(pkt_len+16); |
| 959 | if (skb == NULL) |
| 960 | { |
| 961 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet\n",dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 962 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | break; |
| 964 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | skb_reserve(skb, 2); |
| 966 | outw(pbuf+10, ioaddr+READ_PTR); |
| 967 | insw(ioaddr+DATAPORT, skb_put(skb,pkt_len),(pkt_len+1)>>1); |
| 968 | skb->protocol = eth_type_trans(skb,dev); |
| 969 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 970 | dev->stats.rx_packets++; |
| 971 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | } |
| 973 | outw(rx_block, ioaddr+WRITE_PTR); |
| 974 | outw(0, ioaddr+DATAPORT); |
| 975 | outw(0, ioaddr+DATAPORT); |
| 976 | rx_block = rx_next; |
| 977 | } |
| 978 | } while (FD_Done(status) && boguscount--); |
| 979 | lp->rx_ptr = rx_block; |
| 980 | } |
| 981 | |
| 982 | /* |
| 983 | * Hand a packet to the card for transmission |
| 984 | * If we get here, we MUST have already checked |
| 985 | * to make sure there is room in the transmit |
| 986 | * buffer region. |
| 987 | */ |
| 988 | |
| 989 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, |
| 990 | unsigned short len) |
| 991 | { |
| 992 | struct net_local *lp = netdev_priv(dev); |
| 993 | unsigned short ioaddr = dev->base_addr; |
| 994 | |
| 995 | if (LOCKUP16 || lp->width) { |
| 996 | /* Stop the CU so that there is no chance that it |
| 997 | jumps off to a bogus address while we are writing the |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 998 | pointer to the next transmit packet in 8-bit mode -- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | this eliminates the "CU wedged" errors in 8-bit mode. |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1000 | (Zoltan Szilagyi 10-12-96) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | scb_command(dev, SCB_CUsuspend); |
| 1002 | outw(0xFFFF, ioaddr+SIGNAL_CA); |
| 1003 | } |
| 1004 | |
| 1005 | outw(lp->tx_head, ioaddr + WRITE_PTR); |
| 1006 | |
| 1007 | outw(0x0000, ioaddr + DATAPORT); |
| 1008 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); |
| 1009 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); |
| 1010 | outw(lp->tx_head+0x0e, ioaddr + DATAPORT); |
| 1011 | |
| 1012 | outw(0x0000, ioaddr + DATAPORT); |
| 1013 | outw(0x0000, ioaddr + DATAPORT); |
| 1014 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); |
| 1015 | |
| 1016 | outw(0x8000|len, ioaddr + DATAPORT); |
| 1017 | outw(-1, ioaddr + DATAPORT); |
| 1018 | outw(lp->tx_head+0x16, ioaddr + DATAPORT); |
| 1019 | outw(0, ioaddr + DATAPORT); |
| 1020 | |
| 1021 | outsw(ioaddr + DATAPORT, buf, (len+1)>>1); |
| 1022 | |
| 1023 | outw(lp->tx_tail+0xc, ioaddr + WRITE_PTR); |
| 1024 | outw(lp->tx_head, ioaddr + DATAPORT); |
| 1025 | |
| 1026 | dev->trans_start = jiffies; |
| 1027 | lp->tx_tail = lp->tx_head; |
| 1028 | if (lp->tx_head==TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) |
| 1029 | lp->tx_head = TX_BUF_START; |
| 1030 | else |
| 1031 | lp->tx_head += TX_BUF_SIZE; |
| 1032 | if (lp->tx_head != lp->tx_reap) |
| 1033 | netif_wake_queue(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | if (LOCKUP16 || lp->width) { |
| 1036 | /* Restart the CU so that the packet can actually |
| 1037 | be transmitted. (Zoltan Szilagyi 10-12-96) */ |
| 1038 | scb_command(dev, SCB_CUresume); |
| 1039 | outw(0xFFFF, ioaddr+SIGNAL_CA); |
| 1040 | } |
| 1041 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1042 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | lp->last_tx = jiffies; |
| 1044 | } |
| 1045 | |
| 1046 | /* |
| 1047 | * Sanity check the suspected EtherExpress card |
| 1048 | * Read hardware address, reset card, size memory and initialize buffer |
| 1049 | * memory pointers. These are held in dev->priv, in case someone has more |
| 1050 | * than one card in a machine. |
| 1051 | */ |
| 1052 | |
| 1053 | static int __init eexp_hw_probe(struct net_device *dev, unsigned short ioaddr) |
| 1054 | { |
| 1055 | unsigned short hw_addr[3]; |
| 1056 | unsigned char buswidth; |
| 1057 | unsigned int memory_size; |
| 1058 | int i; |
| 1059 | unsigned short xsum = 0; |
| 1060 | struct net_local *lp = netdev_priv(dev); |
| 1061 | |
| 1062 | printk("%s: EtherExpress 16 at %#x ",dev->name,ioaddr); |
| 1063 | |
| 1064 | outb(ASIC_RST, ioaddr+EEPROM_Ctrl); |
| 1065 | outb(0, ioaddr+EEPROM_Ctrl); |
| 1066 | udelay(500); |
| 1067 | outb(i586_RST, ioaddr+EEPROM_Ctrl); |
| 1068 | |
| 1069 | hw_addr[0] = eexp_hw_readeeprom(ioaddr,2); |
| 1070 | hw_addr[1] = eexp_hw_readeeprom(ioaddr,3); |
| 1071 | hw_addr[2] = eexp_hw_readeeprom(ioaddr,4); |
| 1072 | |
| 1073 | /* Standard Address or Compaq LTE Address */ |
| 1074 | if (!((hw_addr[2]==0x00aa && ((hw_addr[1] & 0xff00)==0x0000)) || |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1075 | (hw_addr[2]==0x0080 && ((hw_addr[1] & 0xff00)==0x5F00)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | { |
| 1077 | printk(" rejected: invalid address %04x%04x%04x\n", |
| 1078 | hw_addr[2],hw_addr[1],hw_addr[0]); |
| 1079 | return -ENODEV; |
| 1080 | } |
| 1081 | |
| 1082 | /* Calculate the EEPROM checksum. Carry on anyway if it's bad, |
| 1083 | * though. |
| 1084 | */ |
| 1085 | for (i = 0; i < 64; i++) |
| 1086 | xsum += eexp_hw_readeeprom(ioaddr, i); |
| 1087 | if (xsum != 0xbaba) |
| 1088 | printk(" (bad EEPROM xsum 0x%02x)", xsum); |
| 1089 | |
| 1090 | dev->base_addr = ioaddr; |
| 1091 | for ( i=0 ; i<6 ; i++ ) |
| 1092 | dev->dev_addr[i] = ((unsigned char *)hw_addr)[5-i]; |
| 1093 | |
| 1094 | { |
| 1095 | static char irqmap[]={0, 9, 3, 4, 5, 10, 11, 0}; |
| 1096 | unsigned short setupval = eexp_hw_readeeprom(ioaddr,0); |
| 1097 | |
| 1098 | /* Use the IRQ from EEPROM if none was given */ |
| 1099 | if (!dev->irq) |
| 1100 | dev->irq = irqmap[setupval>>13]; |
| 1101 | |
| 1102 | if (dev->if_port == 0xff) { |
| 1103 | dev->if_port = !(setupval & 0x1000) ? AUI : |
| 1104 | eexp_hw_readeeprom(ioaddr,5) & 0x1 ? TPE : BNC; |
| 1105 | } |
| 1106 | |
| 1107 | buswidth = !((setupval & 0x400) >> 10); |
| 1108 | } |
| 1109 | |
| 1110 | memset(lp, 0, sizeof(struct net_local)); |
| 1111 | spin_lock_init(&lp->lock); |
| 1112 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1113 | printk("(IRQ %d, %s connector, %d-bit bus", dev->irq, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | eexp_ifmap[dev->if_port], buswidth?8:16); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | if (!request_region(dev->base_addr + 0x300e, 1, "EtherExpress")) |
| 1117 | return -EBUSY; |
| 1118 | |
| 1119 | eexp_hw_set_interface(dev); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | release_region(dev->base_addr + 0x300e, 1); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | /* Find out how much RAM we have on the card */ |
| 1124 | outw(0, dev->base_addr + WRITE_PTR); |
| 1125 | for (i = 0; i < 32768; i++) |
| 1126 | outw(0, dev->base_addr + DATAPORT); |
| 1127 | |
| 1128 | for (memory_size = 0; memory_size < 64; memory_size++) |
| 1129 | { |
| 1130 | outw(memory_size<<10, dev->base_addr + READ_PTR); |
| 1131 | if (inw(dev->base_addr+DATAPORT)) |
| 1132 | break; |
| 1133 | outw(memory_size<<10, dev->base_addr + WRITE_PTR); |
| 1134 | outw(memory_size | 0x5000, dev->base_addr+DATAPORT); |
| 1135 | outw(memory_size<<10, dev->base_addr + READ_PTR); |
| 1136 | if (inw(dev->base_addr+DATAPORT) != (memory_size | 0x5000)) |
| 1137 | break; |
| 1138 | } |
| 1139 | |
| 1140 | /* Sort out the number of buffers. We may have 16, 32, 48 or 64k |
| 1141 | * of RAM to play with. |
| 1142 | */ |
| 1143 | lp->num_tx_bufs = 4; |
| 1144 | lp->rx_buf_end = 0x3ff6; |
| 1145 | switch (memory_size) |
| 1146 | { |
| 1147 | case 64: |
| 1148 | lp->rx_buf_end += 0x4000; |
| 1149 | case 48: |
| 1150 | lp->num_tx_bufs += 4; |
| 1151 | lp->rx_buf_end += 0x4000; |
| 1152 | case 32: |
| 1153 | lp->rx_buf_end += 0x4000; |
| 1154 | case 16: |
| 1155 | printk(", %dk RAM)\n", memory_size); |
| 1156 | break; |
| 1157 | default: |
| 1158 | printk(") bad memory size (%dk).\n", memory_size); |
| 1159 | return -ENODEV; |
| 1160 | break; |
| 1161 | } |
| 1162 | |
| 1163 | lp->rx_buf_start = TX_BUF_START + (lp->num_tx_bufs*TX_BUF_SIZE); |
| 1164 | lp->width = buswidth; |
| 1165 | |
| 1166 | dev->open = eexp_open; |
| 1167 | dev->stop = eexp_close; |
| 1168 | dev->hard_start_xmit = eexp_xmit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | dev->set_multicast_list = &eexp_set_multicast; |
| 1170 | dev->tx_timeout = eexp_timeout; |
| 1171 | dev->watchdog_timeo = 2*HZ; |
| b1fc550 | 2005-05-12 20:11:55 -0400 | [diff] [blame] | 1172 | |
| 1173 | return register_netdev(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | /* |
| 1177 | * Read a word from the EtherExpress on-board serial EEPROM. |
| 1178 | * The EEPROM contains 64 words of 16 bits. |
| 1179 | */ |
| 1180 | static unsigned short __init eexp_hw_readeeprom(unsigned short ioaddr, |
| 1181 | unsigned char location) |
| 1182 | { |
| 1183 | unsigned short cmd = 0x180|(location&0x7f); |
| 1184 | unsigned short rval = 0,wval = EC_CS|i586_RST; |
| 1185 | int i; |
| 1186 | |
| 1187 | outb(EC_CS|i586_RST,ioaddr+EEPROM_Ctrl); |
| 1188 | for (i=0x100 ; i ; i>>=1 ) |
| 1189 | { |
| 1190 | if (cmd&i) |
| 1191 | wval |= EC_Wr; |
| 1192 | else |
| 1193 | wval &= ~EC_Wr; |
| 1194 | |
| 1195 | outb(wval,ioaddr+EEPROM_Ctrl); |
| 1196 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| 1197 | eeprom_delay(); |
| 1198 | outb(wval,ioaddr+EEPROM_Ctrl); |
| 1199 | eeprom_delay(); |
| 1200 | } |
| 1201 | wval &= ~EC_Wr; |
| 1202 | outb(wval,ioaddr+EEPROM_Ctrl); |
| 1203 | for (i=0x8000 ; i ; i>>=1 ) |
| 1204 | { |
| 1205 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| 1206 | eeprom_delay(); |
| 1207 | if (inb(ioaddr+EEPROM_Ctrl)&EC_Rd) |
| 1208 | rval |= i; |
| 1209 | outb(wval,ioaddr+EEPROM_Ctrl); |
| 1210 | eeprom_delay(); |
| 1211 | } |
| 1212 | wval &= ~EC_CS; |
| 1213 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| 1214 | eeprom_delay(); |
| 1215 | outb(wval,ioaddr+EEPROM_Ctrl); |
| 1216 | eeprom_delay(); |
| 1217 | return rval; |
| 1218 | } |
| 1219 | |
| 1220 | /* |
| 1221 | * Reap tx buffers and return last transmit status. |
| 1222 | * if ==0 then either: |
| 1223 | * a) we're not transmitting anything, so why are we here? |
| 1224 | * b) we've died. |
| 1225 | * otherwise, Stat_Busy(return) means we've still got some packets |
| 1226 | * to transmit, Stat_Done(return) means our buffers should be empty |
| 1227 | * again |
| 1228 | */ |
| 1229 | |
| 1230 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev) |
| 1231 | { |
| 1232 | struct net_local *lp = netdev_priv(dev); |
| 1233 | unsigned short tx_block = lp->tx_reap; |
| 1234 | unsigned short status; |
| 1235 | |
| 1236 | if (!netif_queue_stopped(dev) && lp->tx_head==lp->tx_reap) |
| 1237 | return 0x0000; |
| 1238 | |
| 1239 | do |
| 1240 | { |
| 1241 | outw(tx_block & ~31, dev->base_addr + SM_PTR); |
| 1242 | status = inw(dev->base_addr + SHADOW(tx_block)); |
| 1243 | if (!Stat_Done(status)) |
| 1244 | { |
| 1245 | lp->tx_link = tx_block; |
| 1246 | return status; |
| 1247 | } |
| 1248 | else |
| 1249 | { |
| 1250 | lp->last_tx_restart = 0; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1251 | dev->stats.collisions += Stat_NoColl(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | if (!Stat_OK(status)) |
| 1253 | { |
| 1254 | char *whatsup = NULL; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1255 | dev->stats.tx_errors++; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1256 | if (Stat_Abort(status)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1257 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | if (Stat_TNoCar(status)) { |
| 1259 | whatsup = "aborted, no carrier"; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1260 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | } |
| 1262 | if (Stat_TNoCTS(status)) { |
| 1263 | whatsup = "aborted, lost CTS"; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1264 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | } |
| 1266 | if (Stat_TNoDMA(status)) { |
| 1267 | whatsup = "FIFO underran"; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1268 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | } |
| 1270 | if (Stat_TXColl(status)) { |
| 1271 | whatsup = "aborted, too many collisions"; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1272 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | } |
| 1274 | if (whatsup) |
| 1275 | printk(KERN_INFO "%s: transmit %s\n", |
| 1276 | dev->name, whatsup); |
| 1277 | } |
| 1278 | else |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1279 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | } |
| 1281 | if (tx_block == TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) |
| 1282 | lp->tx_reap = tx_block = TX_BUF_START; |
| 1283 | else |
| 1284 | lp->tx_reap = tx_block += TX_BUF_SIZE; |
| 1285 | netif_wake_queue(dev); |
| 1286 | } |
| 1287 | while (lp->tx_reap != lp->tx_head); |
| 1288 | |
| 1289 | lp->tx_link = lp->tx_tail + 0x08; |
| 1290 | |
| 1291 | return status; |
| 1292 | } |
| 1293 | |
| 1294 | /* |
| 1295 | * This should never happen. It is called when some higher routine detects |
| 1296 | * that the CU has stopped, to try to restart it from the last packet we knew |
| 1297 | * we were working on, or the idle loop if we had finished for the time. |
| 1298 | */ |
| 1299 | |
| 1300 | static void eexp_hw_txrestart(struct net_device *dev) |
| 1301 | { |
| 1302 | struct net_local *lp = netdev_priv(dev); |
| 1303 | unsigned short ioaddr = dev->base_addr; |
| 1304 | |
| 1305 | lp->last_tx_restart = lp->tx_link; |
| 1306 | scb_wrcbl(dev, lp->tx_link); |
| 1307 | scb_command(dev, SCB_CUstart); |
| 1308 | outb(0,ioaddr+SIGNAL_CA); |
| 1309 | |
| 1310 | { |
| 1311 | unsigned short boguscount=50,failcount=5; |
| 1312 | while (!scb_status(dev)) |
| 1313 | { |
| 1314 | if (!--boguscount) |
| 1315 | { |
| 1316 | if (--failcount) |
| 1317 | { |
| 1318 | printk(KERN_WARNING "%s: CU start timed out, status %04x, cmd %04x\n", dev->name, scb_status(dev), scb_rdcmd(dev)); |
| 1319 | scb_wrcbl(dev, lp->tx_link); |
| 1320 | scb_command(dev, SCB_CUstart); |
| 1321 | outb(0,ioaddr+SIGNAL_CA); |
| 1322 | boguscount = 100; |
| 1323 | } |
| 1324 | else |
| 1325 | { |
| 1326 | printk(KERN_WARNING "%s: Failed to restart CU, resetting board...\n",dev->name); |
| 1327 | eexp_hw_init586(dev); |
| 1328 | netif_wake_queue(dev); |
| 1329 | return; |
| 1330 | } |
| 1331 | } |
| 1332 | } |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | /* |
| 1337 | * Writes down the list of transmit buffers into card memory. Each |
| 1338 | * entry consists of an 82586 transmit command, followed by a jump |
| 1339 | * pointing to itself. When we want to transmit a packet, we write |
| 1340 | * the data into the appropriate transmit buffer and then modify the |
| 1341 | * preceding jump to point at the new transmit command. This means that |
| 1342 | * the 586 command unit is continuously active. |
| 1343 | */ |
| 1344 | |
| 1345 | static void eexp_hw_txinit(struct net_device *dev) |
| 1346 | { |
| 1347 | struct net_local *lp = netdev_priv(dev); |
| 1348 | unsigned short tx_block = TX_BUF_START; |
| 1349 | unsigned short curtbuf; |
| 1350 | unsigned short ioaddr = dev->base_addr; |
| 1351 | |
| 1352 | for ( curtbuf=0 ; curtbuf<lp->num_tx_bufs ; curtbuf++ ) |
| 1353 | { |
| 1354 | outw(tx_block, ioaddr + WRITE_PTR); |
| 1355 | |
| 1356 | outw(0x0000, ioaddr + DATAPORT); |
| 1357 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); |
| 1358 | outw(tx_block+0x08, ioaddr + DATAPORT); |
| 1359 | outw(tx_block+0x0e, ioaddr + DATAPORT); |
| 1360 | |
| 1361 | outw(0x0000, ioaddr + DATAPORT); |
| 1362 | outw(0x0000, ioaddr + DATAPORT); |
| 1363 | outw(tx_block+0x08, ioaddr + DATAPORT); |
| 1364 | |
| 1365 | outw(0x8000, ioaddr + DATAPORT); |
| 1366 | outw(-1, ioaddr + DATAPORT); |
| 1367 | outw(tx_block+0x16, ioaddr + DATAPORT); |
| 1368 | outw(0x0000, ioaddr + DATAPORT); |
| 1369 | |
| 1370 | tx_block += TX_BUF_SIZE; |
| 1371 | } |
| 1372 | lp->tx_head = TX_BUF_START; |
| 1373 | lp->tx_reap = TX_BUF_START; |
| 1374 | lp->tx_tail = tx_block - TX_BUF_SIZE; |
| 1375 | lp->tx_link = lp->tx_tail + 0x08; |
| 1376 | lp->rx_buf_start = tx_block; |
| 1377 | |
| 1378 | } |
| 1379 | |
| 1380 | /* |
| 1381 | * Write the circular list of receive buffer descriptors to card memory. |
| 1382 | * The end of the list isn't marked, which means that the 82586 receive |
| 1383 | * unit will loop until buffers become available (this avoids it giving us |
| 1384 | * "out of resources" messages). |
| 1385 | */ |
| 1386 | |
| 1387 | static void eexp_hw_rxinit(struct net_device *dev) |
| 1388 | { |
| 1389 | struct net_local *lp = netdev_priv(dev); |
| 1390 | unsigned short rx_block = lp->rx_buf_start; |
| 1391 | unsigned short ioaddr = dev->base_addr; |
| 1392 | |
| 1393 | lp->num_rx_bufs = 0; |
| 1394 | lp->rx_first = lp->rx_ptr = rx_block; |
| 1395 | do |
| 1396 | { |
| 1397 | lp->num_rx_bufs++; |
| 1398 | |
| 1399 | outw(rx_block, ioaddr + WRITE_PTR); |
| 1400 | |
| 1401 | outw(0, ioaddr + DATAPORT); outw(0, ioaddr+DATAPORT); |
| 1402 | outw(rx_block + RX_BUF_SIZE, ioaddr+DATAPORT); |
| 1403 | outw(0xffff, ioaddr+DATAPORT); |
| 1404 | |
| 1405 | outw(0x0000, ioaddr+DATAPORT); |
| 1406 | outw(0xdead, ioaddr+DATAPORT); |
| 1407 | outw(0xdead, ioaddr+DATAPORT); |
| 1408 | outw(0xdead, ioaddr+DATAPORT); |
| 1409 | outw(0xdead, ioaddr+DATAPORT); |
| 1410 | outw(0xdead, ioaddr+DATAPORT); |
| 1411 | outw(0xdead, ioaddr+DATAPORT); |
| 1412 | |
| 1413 | outw(0x0000, ioaddr+DATAPORT); |
| 1414 | outw(rx_block + RX_BUF_SIZE + 0x16, ioaddr+DATAPORT); |
| 1415 | outw(rx_block + 0x20, ioaddr+DATAPORT); |
| 1416 | outw(0, ioaddr+DATAPORT); |
| 1417 | outw(RX_BUF_SIZE-0x20, ioaddr+DATAPORT); |
| 1418 | |
| 1419 | lp->rx_last = rx_block; |
| 1420 | rx_block += RX_BUF_SIZE; |
| 1421 | } while (rx_block <= lp->rx_buf_end-RX_BUF_SIZE); |
| 1422 | |
| 1423 | |
| 1424 | /* Make first Rx frame descriptor point to first Rx buffer |
| 1425 | descriptor */ |
| 1426 | outw(lp->rx_first + 6, ioaddr+WRITE_PTR); |
| 1427 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); |
| 1428 | |
| 1429 | /* Close Rx frame descriptor ring */ |
| 1430 | outw(lp->rx_last + 4, ioaddr+WRITE_PTR); |
| 1431 | outw(lp->rx_first, ioaddr+DATAPORT); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | /* Close Rx buffer descriptor ring */ |
| 1434 | outw(lp->rx_last + 0x16 + 2, ioaddr+WRITE_PTR); |
| 1435 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | /* |
| 1440 | * Un-reset the 586, and start the configuration sequence. We don't wait for |
| 1441 | * this to finish, but allow the interrupt handler to start the CU and RU for |
| 1442 | * us. We can't start the receive/transmission system up before we know that |
| 1443 | * the hardware is configured correctly. |
| 1444 | */ |
| 1445 | |
| 1446 | static void eexp_hw_init586(struct net_device *dev) |
| 1447 | { |
| 1448 | struct net_local *lp = netdev_priv(dev); |
| 1449 | unsigned short ioaddr = dev->base_addr; |
| 1450 | int i; |
| 1451 | |
| 1452 | #if NET_DEBUG > 6 |
| 1453 | printk("%s: eexp_hw_init586()\n", dev->name); |
| 1454 | #endif |
| 1455 | |
| 1456 | lp->started = 0; |
| 1457 | |
| 1458 | set_loopback(dev); |
| 1459 | |
| 1460 | outb(SIRQ_dis|irqrmap[dev->irq],ioaddr+SET_IRQ); |
| 1461 | |
| 1462 | /* Download the startup code */ |
| 1463 | outw(lp->rx_buf_end & ~31, ioaddr + SM_PTR); |
| 1464 | outw(lp->width?0x0001:0x0000, ioaddr + 0x8006); |
| 1465 | outw(0x0000, ioaddr + 0x8008); |
| 1466 | outw(0x0000, ioaddr + 0x800a); |
| 1467 | outw(0x0000, ioaddr + 0x800c); |
| 1468 | outw(0x0000, ioaddr + 0x800e); |
| 1469 | |
| 1470 | for (i = 0; i < (sizeof(start_code)); i+=32) { |
| 1471 | int j; |
| 1472 | outw(i, ioaddr + SM_PTR); |
| 1473 | for (j = 0; j < 16; j+=2) |
| 1474 | outw(start_code[(i+j)/2], |
| 1475 | ioaddr+0x4000+j); |
| 1476 | for (j = 0; j < 16; j+=2) |
| 1477 | outw(start_code[(i+j+16)/2], |
| 1478 | ioaddr+0x8000+j); |
| 1479 | } |
| 1480 | |
| 1481 | /* Do we want promiscuous mode or multicast? */ |
| 1482 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); |
| 1483 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1484 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | ioaddr+SHADOW(CONF_PROMISC)); |
| 1486 | lp->was_promisc = dev->flags & IFF_PROMISC; |
| 1487 | #if 0 |
| 1488 | eexp_setup_filter(dev); |
| 1489 | #endif |
| 1490 | |
| 1491 | /* Write our hardware address */ |
| 1492 | outw(CONF_HWADDR & ~31, ioaddr+SM_PTR); |
| 1493 | outw(((unsigned short *)dev->dev_addr)[0], ioaddr+SHADOW(CONF_HWADDR)); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1494 | outw(((unsigned short *)dev->dev_addr)[1], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | ioaddr+SHADOW(CONF_HWADDR+2)); |
| 1496 | outw(((unsigned short *)dev->dev_addr)[2], |
| 1497 | ioaddr+SHADOW(CONF_HWADDR+4)); |
| 1498 | |
| 1499 | eexp_hw_txinit(dev); |
| 1500 | eexp_hw_rxinit(dev); |
| 1501 | |
| 1502 | outb(0,ioaddr+EEPROM_Ctrl); |
| 1503 | mdelay(5); |
| 1504 | |
| 1505 | scb_command(dev, 0xf000); |
| 1506 | outb(0,ioaddr+SIGNAL_CA); |
| 1507 | |
| 1508 | outw(0, ioaddr+SM_PTR); |
| 1509 | |
| 1510 | { |
| 1511 | unsigned short rboguscount=50,rfailcount=5; |
| 1512 | while (inw(ioaddr+0x4000)) |
| 1513 | { |
| 1514 | if (!--rboguscount) |
| 1515 | { |
| 1516 | printk(KERN_WARNING "%s: i82586 reset timed out, kicking...\n", |
| 1517 | dev->name); |
| 1518 | scb_command(dev, 0); |
| 1519 | outb(0,ioaddr+SIGNAL_CA); |
| 1520 | rboguscount = 100; |
| 1521 | if (!--rfailcount) |
| 1522 | { |
| 1523 | printk(KERN_WARNING "%s: i82586 not responding, giving up.\n", |
| 1524 | dev->name); |
| 1525 | return; |
| 1526 | } |
| 1527 | } |
| 1528 | } |
| 1529 | } |
| 1530 | |
| 1531 | scb_wrcbl(dev, CONF_LINK); |
| 1532 | scb_command(dev, 0xf000|SCB_CUstart); |
| 1533 | outb(0,ioaddr+SIGNAL_CA); |
| 1534 | |
| 1535 | { |
| 1536 | unsigned short iboguscount=50,ifailcount=5; |
| 1537 | while (!scb_status(dev)) |
| 1538 | { |
| 1539 | if (!--iboguscount) |
| 1540 | { |
| 1541 | if (--ifailcount) |
| 1542 | { |
| 1543 | printk(KERN_WARNING "%s: i82586 initialization timed out, status %04x, cmd %04x\n", |
| 1544 | dev->name, scb_status(dev), scb_rdcmd(dev)); |
| 1545 | scb_wrcbl(dev, CONF_LINK); |
| 1546 | scb_command(dev, 0xf000|SCB_CUstart); |
| 1547 | outb(0,ioaddr+SIGNAL_CA); |
| 1548 | iboguscount = 100; |
| 1549 | } |
| 1550 | else |
| 1551 | { |
| 1552 | printk(KERN_WARNING "%s: Failed to initialize i82586, giving up.\n",dev->name); |
| 1553 | return; |
| 1554 | } |
| 1555 | } |
| 1556 | } |
| 1557 | } |
| 1558 | |
| 1559 | clear_loopback(dev); |
| 1560 | outb(SIRQ_en|irqrmap[dev->irq],ioaddr+SET_IRQ); |
| 1561 | |
| 1562 | lp->init_time = jiffies; |
| 1563 | #if NET_DEBUG > 6 |
| 1564 | printk("%s: leaving eexp_hw_init586()\n", dev->name); |
| 1565 | #endif |
| 1566 | return; |
| 1567 | } |
| 1568 | |
| 1569 | static void eexp_setup_filter(struct net_device *dev) |
| 1570 | { |
Bruce Robson | 46fa061 | 2008-05-02 13:40:53 -0700 | [diff] [blame] | 1571 | struct dev_mc_list *dmi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | unsigned short ioaddr = dev->base_addr; |
| 1573 | int count = dev->mc_count; |
| 1574 | int i; |
| 1575 | if (count > 8) { |
| 1576 | printk(KERN_INFO "%s: too many multicast addresses (%d)\n", |
| 1577 | dev->name, count); |
| 1578 | count = 8; |
| 1579 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | outw(CONF_NR_MULTICAST & ~31, ioaddr+SM_PTR); |
Bruce Robson | 46fa061 | 2008-05-02 13:40:53 -0700 | [diff] [blame] | 1582 | outw(6*count, ioaddr+SHADOW(CONF_NR_MULTICAST)); |
| 1583 | for (i = 0, dmi = dev->mc_list; i < count; i++, dmi = dmi->next) { |
| 1584 | unsigned short *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | if (!dmi) { |
| 1586 | printk(KERN_INFO "%s: too few multicast addresses\n", dev->name); |
| 1587 | break; |
| 1588 | } |
| 1589 | if (dmi->dmi_addrlen != ETH_ALEN) { |
| 1590 | printk(KERN_INFO "%s: invalid multicast address length given.\n", dev->name); |
| 1591 | continue; |
| 1592 | } |
Bruce Robson | 46fa061 | 2008-05-02 13:40:53 -0700 | [diff] [blame] | 1593 | data = (unsigned short *)dmi->dmi_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | outw((CONF_MULTICAST+(6*i)) & ~31, ioaddr+SM_PTR); |
| 1595 | outw(data[0], ioaddr+SHADOW(CONF_MULTICAST+(6*i))); |
| 1596 | outw((CONF_MULTICAST+(6*i)+2) & ~31, ioaddr+SM_PTR); |
| 1597 | outw(data[1], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+2)); |
| 1598 | outw((CONF_MULTICAST+(6*i)+4) & ~31, ioaddr+SM_PTR); |
| 1599 | outw(data[2], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+4)); |
| 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | /* |
| 1604 | * Set or clear the multicast filter for this adaptor. |
| 1605 | */ |
| 1606 | static void |
| 1607 | eexp_set_multicast(struct net_device *dev) |
| 1608 | { |
| 1609 | unsigned short ioaddr = dev->base_addr; |
| 1610 | struct net_local *lp = netdev_priv(dev); |
| 1611 | int kick = 0, i; |
| 1612 | if ((dev->flags & IFF_PROMISC) != lp->was_promisc) { |
| 1613 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); |
| 1614 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); |
| 1615 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
| 1616 | ioaddr+SHADOW(CONF_PROMISC)); |
| 1617 | lp->was_promisc = dev->flags & IFF_PROMISC; |
| 1618 | kick = 1; |
| 1619 | } |
| 1620 | if (!(dev->flags & IFF_PROMISC)) { |
| 1621 | eexp_setup_filter(dev); |
| 1622 | if (lp->old_mc_count != dev->mc_count) { |
| 1623 | kick = 1; |
| 1624 | lp->old_mc_count = dev->mc_count; |
| 1625 | } |
| 1626 | } |
| 1627 | if (kick) { |
| 1628 | unsigned long oj; |
| 1629 | scb_command(dev, SCB_CUsuspend); |
| 1630 | outb(0, ioaddr+SIGNAL_CA); |
| 1631 | outb(0, ioaddr+SIGNAL_CA); |
| 1632 | #if 0 |
| 1633 | printk("%s: waiting for CU to go suspended\n", dev->name); |
| 1634 | #endif |
| 1635 | oj = jiffies; |
| 1636 | while ((SCB_CUstat(scb_status(dev)) == 2) && |
Shani Moideen | 1c0d6dc | 2007-04-28 11:05:43 -0400 | [diff] [blame] | 1637 | (time_before(jiffies, oj + 2000))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | if (SCB_CUstat(scb_status(dev)) == 2) |
| 1639 | printk("%s: warning, CU didn't stop\n", dev->name); |
| 1640 | lp->started &= ~(STARTED_CU); |
| 1641 | scb_wrcbl(dev, CONF_LINK); |
| 1642 | scb_command(dev, SCB_CUstart); |
| 1643 | outb(0, ioaddr+SIGNAL_CA); |
| 1644 | } |
| 1645 | } |
| 1646 | |
| 1647 | |
| 1648 | /* |
| 1649 | * MODULE stuff |
| 1650 | */ |
| 1651 | |
| 1652 | #ifdef MODULE |
| 1653 | |
| 1654 | #define EEXP_MAX_CARDS 4 /* max number of cards to support */ |
| 1655 | |
| 1656 | static struct net_device *dev_eexp[EEXP_MAX_CARDS]; |
| 1657 | static int irq[EEXP_MAX_CARDS]; |
| 1658 | static int io[EEXP_MAX_CARDS]; |
| 1659 | |
| 1660 | module_param_array(io, int, NULL, 0); |
| 1661 | module_param_array(irq, int, NULL, 0); |
| 1662 | MODULE_PARM_DESC(io, "EtherExpress 16 I/O base address(es)"); |
| 1663 | MODULE_PARM_DESC(irq, "EtherExpress 16 IRQ number(s)"); |
| 1664 | MODULE_LICENSE("GPL"); |
| 1665 | |
| 1666 | |
| 1667 | /* Ideally the user would give us io=, irq= for every card. If any parameters |
| 1668 | * are specified, we verify and then use them. If no parameters are given, we |
| 1669 | * autoprobe for one card only. |
| 1670 | */ |
Andrew Morton | b1176b9 | 2006-08-14 23:00:01 -0700 | [diff] [blame] | 1671 | int __init init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | { |
| 1673 | struct net_device *dev; |
| 1674 | int this_dev, found = 0; |
| 1675 | |
| 1676 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { |
| 1677 | dev = alloc_etherdev(sizeof(struct net_local)); |
| 1678 | dev->irq = irq[this_dev]; |
| 1679 | dev->base_addr = io[this_dev]; |
| 1680 | if (io[this_dev] == 0) { |
| 1681 | if (this_dev) |
| 1682 | break; |
| 1683 | printk(KERN_NOTICE "eexpress.c: Module autoprobe not recommended, give io=xx.\n"); |
| 1684 | } |
| b1fc550 | 2005-05-12 20:11:55 -0400 | [diff] [blame] | 1685 | if (do_express_probe(dev) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | dev_eexp[this_dev] = dev; |
| 1687 | found++; |
| 1688 | continue; |
| 1689 | } |
| 1690 | printk(KERN_WARNING "eexpress.c: Failed to register card at 0x%x.\n", io[this_dev]); |
| 1691 | free_netdev(dev); |
| 1692 | break; |
| 1693 | } |
| 1694 | if (found) |
| 1695 | return 0; |
| 1696 | return -ENXIO; |
| 1697 | } |
| 1698 | |
Al Viro | afc8eb4 | 2006-06-14 18:50:53 -0400 | [diff] [blame] | 1699 | void __exit cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | { |
| 1701 | int this_dev; |
| 1702 | |
| 1703 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { |
| 1704 | struct net_device *dev = dev_eexp[this_dev]; |
| 1705 | if (dev) { |
| 1706 | unregister_netdev(dev); |
| 1707 | free_netdev(dev); |
| 1708 | } |
| 1709 | } |
| 1710 | } |
| 1711 | #endif |
| 1712 | |
| 1713 | /* |
| 1714 | * Local Variables: |
| 1715 | * c-file-style: "linux" |
| 1716 | * tab-width: 8 |
| 1717 | * End: |
| 1718 | */ |