Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | net-3-driver for the IBM LAN Adapter/A |
| 3 | |
| 4 | This is an extension to the Linux operating system, and is covered by the |
| 5 | same GNU General Public License that covers that work. |
| 6 | |
| 7 | Copyright 1999 by Alfred Arnold (alfred@ccac.rwth-aachen.de, |
| 8 | alfred.arnold@lancom.de) |
| 9 | |
| 10 | This driver is based both on the SK_MCA driver, which is itself based on the |
| 11 | SK_G16 and 3C523 driver. |
| 12 | |
| 13 | paper sources: |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 14 | 'PC Hardware: Aufbau, Funktionsweise, Programmierung' by |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | Hans-Peter Messmer for the basic Microchannel stuff |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | 'Linux Geraetetreiber' by Allesandro Rubini, Kalle Dalheimer |
| 18 | for help on Ethernet driver programming |
| 19 | |
| 20 | 'DP83934CVUL-20/25 MHz SONIC-T Ethernet Controller Datasheet' by National |
| 21 | Semiconductor for info on the MAC chip |
| 22 | |
| 23 | 'LAN Technical Reference Ethernet Adapter Interface Version 1 Release 1.0 |
| 24 | Document Number SC30-3661-00' by IBM for info on the adapter itself |
| 25 | |
| 26 | Also see http://www.natsemi.com/ |
| 27 | |
| 28 | special acknowledgements to: |
| 29 | - Bob Eager for helping me out with documentation from IBM |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 30 | - Jim Shorney for his endless patience with me while I was using |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | him as a beta tester to trace down the address filter bug ;-) |
| 32 | |
| 33 | Missing things: |
| 34 | |
| 35 | -> set debug level via ioctl instead of compile-time switches |
| 36 | -> I didn't follow the development of the 2.1.x kernels, so my |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 37 | assumptions about which things changed with which kernel version |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | are probably nonsense |
| 39 | |
| 40 | History: |
| 41 | Nov 6th, 1999 |
| 42 | startup from SK_MCA driver |
| 43 | Dec 6th, 1999 |
| 44 | finally got docs about the card. A big thank you to Bob Eager! |
| 45 | Dec 12th, 1999 |
| 46 | first packet received |
| 47 | Dec 13th, 1999 |
| 48 | recv queue done, tcpdump works |
| 49 | Dec 15th, 1999 |
| 50 | transmission part works |
| 51 | Dec 28th, 1999 |
| 52 | added usage of the isa_functions for Linux 2.3 . Things should |
| 53 | still work with 2.0.x.... |
| 54 | Jan 28th, 2000 |
| 55 | in Linux 2.2.13, the version.h file mysteriously didn't get |
| 56 | included. Added a workaround for this. Futhermore, it now |
| 57 | not only compiles as a modules ;-) |
| 58 | Jan 30th, 2000 |
| 59 | newer kernels automatically probe more than one board, so the |
| 60 | 'startslot' as a variable is also needed here |
| 61 | Apr 12th, 2000 |
| 62 | the interrupt mask register is not set 'hard' instead of individually |
| 63 | setting registers, since this seems to set bits that shouldn't be |
| 64 | set |
| 65 | May 21st, 2000 |
| 66 | reset interrupt status immediately after CAM load |
| 67 | add a recovery delay after releasing the chip's reset line |
| 68 | May 24th, 2000 |
| 69 | finally found the bug in the address filter setup - damned signed |
| 70 | chars! |
| 71 | June 1st, 2000 |
| 72 | corrected version codes, added support for the latest 2.3 changes |
| 73 | Oct 28th, 2002 |
Alan Cox | 113aa83 | 2008-10-13 19:01:08 -0700 | [diff] [blame] | 74 | cleaned up for the 2.5 tree <alan@lxorguk.ukuu.org.uk> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | *************************************************************************/ |
| 77 | |
| 78 | #include <linux/kernel.h> |
| 79 | #include <linux/string.h> |
| 80 | #include <linux/errno.h> |
| 81 | #include <linux/ioport.h> |
| 82 | #include <linux/slab.h> |
| 83 | #include <linux/interrupt.h> |
| 84 | #include <linux/delay.h> |
| 85 | #include <linux/time.h> |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 86 | #include <linux/mca.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | #include <linux/module.h> |
| 88 | #include <linux/netdevice.h> |
| 89 | #include <linux/etherdevice.h> |
| 90 | #include <linux/skbuff.h> |
| 91 | #include <linux/bitops.h> |
| 92 | |
| 93 | #include <asm/processor.h> |
| 94 | #include <asm/io.h> |
| 95 | |
| 96 | #define _IBM_LANA_DRIVER_ |
| 97 | #include "ibmlana.h" |
| 98 | |
| 99 | #undef DEBUG |
| 100 | |
| 101 | #define DRV_NAME "ibmlana" |
| 102 | |
| 103 | /* ------------------------------------------------------------------------ |
| 104 | * global static data - not more since we can handle multiple boards and |
| 105 | * have to pack all state info into the device struct! |
| 106 | * ------------------------------------------------------------------------ */ |
| 107 | |
| 108 | static char *MediaNames[Media_Count] = { |
| 109 | "10BaseT", "10Base5", "Unknown", "10Base2" |
| 110 | }; |
| 111 | |
| 112 | /* ------------------------------------------------------------------------ |
| 113 | * private subfunctions |
| 114 | * ------------------------------------------------------------------------ */ |
| 115 | |
| 116 | #ifdef DEBUG |
| 117 | /* dump all registers */ |
| 118 | |
| 119 | static void dumpregs(struct net_device *dev) |
| 120 | { |
| 121 | int z; |
| 122 | |
| 123 | for (z = 0; z < 160; z += 2) { |
| 124 | if (!(z & 15)) |
| 125 | printk("REGS: %04x:", z); |
| 126 | printk(" %04x", inw(dev->base_addr + z)); |
| 127 | if ((z & 15) == 14) |
| 128 | printk("\n"); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /* dump parts of shared memory - only needed during debugging */ |
| 133 | |
| 134 | static void dumpmem(struct net_device *dev, u32 start, u32 len) |
| 135 | { |
| 136 | ibmlana_priv *priv = netdev_priv(dev); |
| 137 | int z; |
| 138 | |
| 139 | printk("Address %04x:\n", start); |
| 140 | for (z = 0; z < len; z++) { |
| 141 | if ((z & 15) == 0) |
| 142 | printk("%04x:", z); |
| 143 | printk(" %02x", readb(priv->base + start + z)); |
| 144 | if ((z & 15) == 15) |
| 145 | printk("\n"); |
| 146 | } |
| 147 | if ((z & 15) != 0) |
| 148 | printk("\n"); |
| 149 | } |
| 150 | |
| 151 | /* print exact time - ditto */ |
| 152 | |
| 153 | static void PrTime(void) |
| 154 | { |
| 155 | struct timeval tv; |
| 156 | |
| 157 | do_gettimeofday(&tv); |
| 158 | printk("%9d:%06d: ", (int) tv.tv_sec, (int) tv.tv_usec); |
| 159 | } |
| 160 | #endif /* DEBUG */ |
| 161 | |
| 162 | /* deduce resources out of POS registers */ |
| 163 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 164 | static void getaddrs(struct mca_device *mdev, int *base, int *memlen, |
| 165 | int *iobase, int *irq, ibmlana_medium *medium) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | { |
| 167 | u_char pos0, pos1; |
| 168 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 169 | pos0 = mca_device_read_stored_pos(mdev, 2); |
| 170 | pos1 = mca_device_read_stored_pos(mdev, 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
| 172 | *base = 0xc0000 + ((pos1 & 0xf0) << 9); |
| 173 | *memlen = (pos1 & 0x01) ? 0x8000 : 0x4000; |
| 174 | *iobase = (pos0 & 0xe0) << 7; |
| 175 | switch (pos0 & 0x06) { |
| 176 | case 0: |
| 177 | *irq = 5; |
| 178 | break; |
| 179 | case 2: |
| 180 | *irq = 15; |
| 181 | break; |
| 182 | case 4: |
| 183 | *irq = 10; |
| 184 | break; |
| 185 | case 6: |
| 186 | *irq = 11; |
| 187 | break; |
| 188 | } |
| 189 | *medium = (pos0 & 0x18) >> 3; |
| 190 | } |
| 191 | |
| 192 | /* wait on register value with mask and timeout */ |
| 193 | |
| 194 | static int wait_timeout(struct net_device *dev, int regoffs, u16 mask, |
| 195 | u16 value, int timeout) |
| 196 | { |
| 197 | unsigned long fin = jiffies + timeout; |
| 198 | |
| 199 | while (time_before(jiffies,fin)) |
| 200 | if ((inw(dev->base_addr + regoffs) & mask) == value) |
| 201 | return 1; |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | |
| 207 | /* reset the whole board */ |
| 208 | |
| 209 | static void ResetBoard(struct net_device *dev) |
| 210 | { |
| 211 | unsigned char bcmval; |
| 212 | |
| 213 | /* read original board control value */ |
| 214 | |
| 215 | bcmval = inb(dev->base_addr + BCMREG); |
| 216 | |
| 217 | /* set reset bit for a while */ |
| 218 | |
| 219 | bcmval |= BCMREG_RESET; |
| 220 | outb(bcmval, dev->base_addr + BCMREG); |
| 221 | udelay(10); |
| 222 | bcmval &= ~BCMREG_RESET; |
| 223 | outb(bcmval, dev->base_addr + BCMREG); |
| 224 | |
| 225 | /* switch over to RAM again */ |
| 226 | |
| 227 | bcmval |= BCMREG_RAMEN | BCMREG_RAMWIN; |
| 228 | outb(bcmval, dev->base_addr + BCMREG); |
| 229 | } |
| 230 | |
| 231 | /* calculate RAM layout & set up descriptors in RAM */ |
| 232 | |
| 233 | static void InitDscrs(struct net_device *dev) |
| 234 | { |
| 235 | ibmlana_priv *priv = netdev_priv(dev); |
| 236 | u32 addr, baddr, raddr; |
| 237 | int z; |
| 238 | tda_t tda; |
| 239 | rda_t rda; |
| 240 | rra_t rra; |
| 241 | |
| 242 | /* initialize RAM */ |
| 243 | |
| 244 | memset_io(priv->base, 0xaa, |
| 245 | dev->mem_start - dev->mem_start); /* XXX: typo? */ |
| 246 | |
| 247 | /* setup n TX descriptors - independent of RAM size */ |
| 248 | |
| 249 | priv->tdastart = addr = 0; |
| 250 | priv->txbufstart = baddr = sizeof(tda_t) * TXBUFCNT; |
| 251 | for (z = 0; z < TXBUFCNT; z++) { |
| 252 | tda.status = 0; |
| 253 | tda.config = 0; |
| 254 | tda.length = 0; |
| 255 | tda.fragcount = 1; |
| 256 | tda.startlo = baddr; |
| 257 | tda.starthi = 0; |
| 258 | tda.fraglength = 0; |
| 259 | if (z == TXBUFCNT - 1) |
| 260 | tda.link = priv->tdastart; |
| 261 | else |
| 262 | tda.link = addr + sizeof(tda_t); |
| 263 | tda.link |= 1; |
| 264 | memcpy_toio(priv->base + addr, &tda, sizeof(tda_t)); |
| 265 | addr += sizeof(tda_t); |
| 266 | baddr += PKTSIZE; |
| 267 | } |
| 268 | |
| 269 | /* calculate how many receive buffers fit into remaining memory */ |
| 270 | |
| 271 | priv->rxbufcnt = (dev->mem_end - dev->mem_start - baddr) / (sizeof(rra_t) + sizeof(rda_t) + PKTSIZE); |
| 272 | |
| 273 | /* calculate receive addresses */ |
| 274 | |
| 275 | priv->rrastart = raddr = priv->txbufstart + (TXBUFCNT * PKTSIZE); |
| 276 | priv->rdastart = addr = priv->rrastart + (priv->rxbufcnt * sizeof(rra_t)); |
| 277 | priv->rxbufstart = baddr = priv->rdastart + (priv->rxbufcnt * sizeof(rda_t)); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | for (z = 0; z < priv->rxbufcnt; z++) { |
| 280 | rra.startlo = baddr; |
| 281 | rra.starthi = 0; |
| 282 | rra.cntlo = PKTSIZE >> 1; |
| 283 | rra.cnthi = 0; |
| 284 | memcpy_toio(priv->base + raddr, &rra, sizeof(rra_t)); |
| 285 | |
| 286 | rda.status = 0; |
| 287 | rda.length = 0; |
| 288 | rda.startlo = 0; |
| 289 | rda.starthi = 0; |
| 290 | rda.seqno = 0; |
| 291 | if (z < priv->rxbufcnt - 1) |
| 292 | rda.link = addr + sizeof(rda_t); |
| 293 | else |
| 294 | rda.link = 1; |
| 295 | rda.inuse = 1; |
| 296 | memcpy_toio(priv->base + addr, &rda, sizeof(rda_t)); |
| 297 | |
| 298 | baddr += PKTSIZE; |
| 299 | raddr += sizeof(rra_t); |
| 300 | addr += sizeof(rda_t); |
| 301 | } |
| 302 | |
| 303 | /* initialize current pointers */ |
| 304 | |
| 305 | priv->nextrxdescr = 0; |
| 306 | priv->lastrxdescr = priv->rxbufcnt - 1; |
| 307 | priv->nexttxdescr = 0; |
| 308 | priv->currtxdescr = 0; |
| 309 | priv->txusedcnt = 0; |
| 310 | memset(priv->txused, 0, sizeof(priv->txused)); |
| 311 | } |
| 312 | |
| 313 | /* set up Rx + Tx descriptors in SONIC */ |
| 314 | |
| 315 | static int InitSONIC(struct net_device *dev) |
| 316 | { |
| 317 | ibmlana_priv *priv = netdev_priv(dev); |
| 318 | |
| 319 | /* set up start & end of resource area */ |
| 320 | |
| 321 | outw(0, SONIC_URRA); |
| 322 | outw(priv->rrastart, dev->base_addr + SONIC_RSA); |
| 323 | outw(priv->rrastart + (priv->rxbufcnt * sizeof(rra_t)), dev->base_addr + SONIC_REA); |
| 324 | outw(priv->rrastart, dev->base_addr + SONIC_RRP); |
| 325 | outw(priv->rrastart, dev->base_addr + SONIC_RWP); |
| 326 | |
| 327 | /* set EOBC so that only one packet goes into one buffer */ |
| 328 | |
| 329 | outw((PKTSIZE - 4) >> 1, dev->base_addr + SONIC_EOBC); |
| 330 | |
| 331 | /* let SONIC read the first RRA descriptor */ |
| 332 | |
| 333 | outw(CMDREG_RRRA, dev->base_addr + SONIC_CMDREG); |
| 334 | if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_RRRA, 0, 2)) { |
| 335 | printk(KERN_ERR "%s: SONIC did not respond on RRRA command - giving up.", dev->name); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | /* point SONIC to the first RDA */ |
| 340 | |
| 341 | outw(0, dev->base_addr + SONIC_URDA); |
| 342 | outw(priv->rdastart, dev->base_addr + SONIC_CRDA); |
| 343 | |
| 344 | /* set upper half of TDA address */ |
| 345 | |
| 346 | outw(0, dev->base_addr + SONIC_UTDA); |
| 347 | |
| 348 | return 1; |
| 349 | } |
| 350 | |
| 351 | /* stop SONIC so we can reinitialize it */ |
| 352 | |
| 353 | static void StopSONIC(struct net_device *dev) |
| 354 | { |
| 355 | /* disable interrupts */ |
| 356 | |
| 357 | outb(inb(dev->base_addr + BCMREG) & (~BCMREG_IEN), dev->base_addr + BCMREG); |
| 358 | outb(0, dev->base_addr + SONIC_IMREG); |
| 359 | |
| 360 | /* reset the SONIC */ |
| 361 | |
| 362 | outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG); |
| 363 | udelay(10); |
| 364 | outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG); |
| 365 | } |
| 366 | |
| 367 | /* initialize card and SONIC for proper operation */ |
| 368 | |
| 369 | static void putcam(camentry_t * cams, int *camcnt, char *addr) |
| 370 | { |
| 371 | camentry_t *pcam = cams + (*camcnt); |
| 372 | u8 *uaddr = (u8 *) addr; |
| 373 | |
| 374 | pcam->index = *camcnt; |
| 375 | pcam->addr0 = (((u16) uaddr[1]) << 8) | uaddr[0]; |
| 376 | pcam->addr1 = (((u16) uaddr[3]) << 8) | uaddr[2]; |
| 377 | pcam->addr2 = (((u16) uaddr[5]) << 8) | uaddr[4]; |
| 378 | (*camcnt)++; |
| 379 | } |
| 380 | |
| 381 | static void InitBoard(struct net_device *dev) |
| 382 | { |
| 383 | ibmlana_priv *priv = netdev_priv(dev); |
| 384 | int camcnt; |
| 385 | camentry_t cams[16]; |
| 386 | u32 cammask; |
| 387 | struct dev_mc_list *mcptr; |
| 388 | u16 rcrval; |
| 389 | |
| 390 | /* reset the SONIC */ |
| 391 | |
| 392 | outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG); |
| 393 | udelay(10); |
| 394 | |
| 395 | /* clear all spurious interrupts */ |
| 396 | |
| 397 | outw(inw(dev->base_addr + SONIC_ISREG), dev->base_addr + SONIC_ISREG); |
| 398 | |
| 399 | /* set up the SONIC's bus interface - constant for this adapter - |
| 400 | must be done while the SONIC is in reset */ |
| 401 | |
| 402 | outw(DCREG_USR1 | DCREG_USR0 | DCREG_WC1 | DCREG_DW32, dev->base_addr + SONIC_DCREG); |
| 403 | outw(0, dev->base_addr + SONIC_DCREG2); |
| 404 | |
| 405 | /* remove reset form the SONIC */ |
| 406 | |
| 407 | outw(0, dev->base_addr + SONIC_CMDREG); |
| 408 | udelay(10); |
| 409 | |
| 410 | /* data sheet requires URRA to be programmed before setting up the CAM contents */ |
| 411 | |
| 412 | outw(0, dev->base_addr + SONIC_URRA); |
| 413 | |
| 414 | /* program the CAM entry 0 to the device address */ |
| 415 | |
| 416 | camcnt = 0; |
| 417 | putcam(cams, &camcnt, dev->dev_addr); |
| 418 | |
| 419 | /* start putting the multicast addresses into the CAM list. Stop if |
| 420 | it is full. */ |
| 421 | |
| 422 | for (mcptr = dev->mc_list; mcptr != NULL; mcptr = mcptr->next) { |
| 423 | putcam(cams, &camcnt, mcptr->dmi_addr); |
| 424 | if (camcnt == 16) |
| 425 | break; |
| 426 | } |
| 427 | |
| 428 | /* calculate CAM mask */ |
| 429 | |
| 430 | cammask = (1 << camcnt) - 1; |
| 431 | |
| 432 | /* feed CDA into SONIC, initialize RCR value (always get broadcasts) */ |
| 433 | |
| 434 | memcpy_toio(priv->base, cams, sizeof(camentry_t) * camcnt); |
| 435 | memcpy_toio(priv->base + (sizeof(camentry_t) * camcnt), &cammask, sizeof(cammask)); |
| 436 | |
| 437 | #ifdef DEBUG |
| 438 | printk("CAM setup:\n"); |
| 439 | dumpmem(dev, 0, sizeof(camentry_t) * camcnt + sizeof(cammask)); |
| 440 | #endif |
| 441 | |
| 442 | outw(0, dev->base_addr + SONIC_CAMPTR); |
| 443 | outw(camcnt, dev->base_addr + SONIC_CAMCNT); |
| 444 | outw(CMDREG_LCAM, dev->base_addr + SONIC_CMDREG); |
| 445 | if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_LCAM, 0, 2)) { |
| 446 | printk(KERN_ERR "%s:SONIC did not respond on LCAM command - giving up.", dev->name); |
| 447 | return; |
| 448 | } else { |
| 449 | /* clear interrupt condition */ |
| 450 | |
| 451 | outw(ISREG_LCD, dev->base_addr + SONIC_ISREG); |
| 452 | |
| 453 | #ifdef DEBUG |
| 454 | printk("Loading CAM done, address pointers %04x:%04x\n", |
| 455 | inw(dev->base_addr + SONIC_URRA), |
| 456 | inw(dev->base_addr + SONIC_CAMPTR)); |
| 457 | { |
| 458 | int z; |
| 459 | |
| 460 | printk("\n-->CAM: PTR %04x CNT %04x\n", |
| 461 | inw(dev->base_addr + SONIC_CAMPTR), |
| 462 | inw(dev->base_addr + SONIC_CAMCNT)); |
| 463 | outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG); |
| 464 | for (z = 0; z < camcnt; z++) { |
| 465 | outw(z, dev->base_addr + SONIC_CAMEPTR); |
| 466 | printk("Entry %d: %04x %04x %04x\n", z, |
| 467 | inw(dev->base_addr + SONIC_CAMADDR0), |
| 468 | inw(dev->base_addr + SONIC_CAMADDR1), |
| 469 | inw(dev->base_addr + SONIC_CAMADDR2)); |
| 470 | } |
| 471 | outw(0, dev->base_addr + SONIC_CMDREG); |
| 472 | } |
| 473 | #endif |
| 474 | } |
| 475 | |
| 476 | rcrval = RCREG_BRD | RCREG_LB_NONE; |
| 477 | |
| 478 | /* if still multicast addresses left or ALLMULTI is set, set the multicast |
| 479 | enable bit */ |
| 480 | |
| 481 | if ((dev->flags & IFF_ALLMULTI) || (mcptr != NULL)) |
| 482 | rcrval |= RCREG_AMC; |
| 483 | |
| 484 | /* promiscous mode ? */ |
| 485 | |
| 486 | if (dev->flags & IFF_PROMISC) |
| 487 | rcrval |= RCREG_PRO; |
| 488 | |
| 489 | /* program receive mode */ |
| 490 | |
| 491 | outw(rcrval, dev->base_addr + SONIC_RCREG); |
| 492 | #ifdef DEBUG |
| 493 | printk("\nRCRVAL: %04x\n", rcrval); |
| 494 | #endif |
| 495 | |
| 496 | /* set up descriptors in shared memory + feed them into SONIC registers */ |
| 497 | |
| 498 | InitDscrs(dev); |
| 499 | if (!InitSONIC(dev)) |
| 500 | return; |
| 501 | |
| 502 | /* reset all pending interrupts */ |
| 503 | |
| 504 | outw(0xffff, dev->base_addr + SONIC_ISREG); |
| 505 | |
| 506 | /* enable transmitter + receiver interrupts */ |
| 507 | |
| 508 | outw(CMDREG_RXEN, dev->base_addr + SONIC_CMDREG); |
| 509 | outw(IMREG_PRXEN | IMREG_RBEEN | IMREG_PTXEN | IMREG_TXEREN, dev->base_addr + SONIC_IMREG); |
| 510 | |
| 511 | /* turn on card interrupts */ |
| 512 | |
| 513 | outb(inb(dev->base_addr + BCMREG) | BCMREG_IEN, dev->base_addr + BCMREG); |
| 514 | |
| 515 | #ifdef DEBUG |
| 516 | printk("Register dump after initialization:\n"); |
| 517 | dumpregs(dev); |
| 518 | #endif |
| 519 | } |
| 520 | |
| 521 | /* start transmission of a descriptor */ |
| 522 | |
| 523 | static void StartTx(struct net_device *dev, int descr) |
| 524 | { |
| 525 | ibmlana_priv *priv = netdev_priv(dev); |
| 526 | int addr; |
| 527 | |
| 528 | addr = priv->tdastart + (descr * sizeof(tda_t)); |
| 529 | |
| 530 | /* put descriptor address into SONIC */ |
| 531 | |
| 532 | outw(addr, dev->base_addr + SONIC_CTDA); |
| 533 | |
| 534 | /* trigger transmitter */ |
| 535 | |
| 536 | priv->currtxdescr = descr; |
| 537 | outw(CMDREG_TXP, dev->base_addr + SONIC_CMDREG); |
| 538 | } |
| 539 | |
| 540 | /* ------------------------------------------------------------------------ |
| 541 | * interrupt handler(s) |
| 542 | * ------------------------------------------------------------------------ */ |
| 543 | |
| 544 | /* receive buffer area exhausted */ |
| 545 | |
| 546 | static void irqrbe_handler(struct net_device *dev) |
| 547 | { |
| 548 | ibmlana_priv *priv = netdev_priv(dev); |
| 549 | |
| 550 | /* point the SONIC back to the RRA start */ |
| 551 | |
| 552 | outw(priv->rrastart, dev->base_addr + SONIC_RRP); |
| 553 | outw(priv->rrastart, dev->base_addr + SONIC_RWP); |
| 554 | } |
| 555 | |
| 556 | /* receive interrupt */ |
| 557 | |
| 558 | static void irqrx_handler(struct net_device *dev) |
| 559 | { |
| 560 | ibmlana_priv *priv = netdev_priv(dev); |
| 561 | rda_t rda; |
| 562 | u32 rdaaddr, lrdaaddr; |
| 563 | |
| 564 | /* loop until ... */ |
| 565 | |
| 566 | while (1) { |
| 567 | /* read descriptor that was next to be filled by SONIC */ |
| 568 | |
| 569 | rdaaddr = priv->rdastart + (priv->nextrxdescr * sizeof(rda_t)); |
| 570 | lrdaaddr = priv->rdastart + (priv->lastrxdescr * sizeof(rda_t)); |
| 571 | memcpy_fromio(&rda, priv->base + rdaaddr, sizeof(rda_t)); |
| 572 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 573 | /* iron out upper word halves of fields we use - SONIC will duplicate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | bits 0..15 to 16..31 */ |
| 575 | |
| 576 | rda.status &= 0xffff; |
| 577 | rda.length &= 0xffff; |
| 578 | rda.startlo &= 0xffff; |
| 579 | |
| 580 | /* stop if the SONIC still owns it, i.e. there is no data for us */ |
| 581 | |
| 582 | if (rda.inuse) |
| 583 | break; |
| 584 | |
| 585 | /* good packet? */ |
| 586 | |
| 587 | else if (rda.status & RCREG_PRX) { |
| 588 | struct sk_buff *skb; |
| 589 | |
| 590 | /* fetch buffer */ |
| 591 | |
| 592 | skb = dev_alloc_skb(rda.length + 2); |
| 593 | if (skb == NULL) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 594 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | else { |
| 596 | /* copy out data */ |
| 597 | |
| 598 | memcpy_fromio(skb_put(skb, rda.length), |
| 599 | priv->base + |
| 600 | rda.startlo, rda.length); |
| 601 | |
| 602 | /* set up skb fields */ |
| 603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | skb->protocol = eth_type_trans(skb, dev); |
| 605 | skb->ip_summed = CHECKSUM_NONE; |
| 606 | |
| 607 | /* bookkeeping */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 608 | dev->stats.rx_packets++; |
| 609 | dev->stats.rx_bytes += rda.length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | /* pass to the upper layers */ |
| 612 | netif_rx(skb); |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | /* otherwise check error status bits and increase statistics */ |
| 617 | |
| 618 | else { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 619 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | if (rda.status & RCREG_FAER) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 621 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | if (rda.status & RCREG_CRCR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 623 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | /* descriptor processed, will become new last descriptor in queue */ |
| 627 | |
| 628 | rda.link = 1; |
| 629 | rda.inuse = 1; |
| 630 | memcpy_toio(priv->base + rdaaddr, &rda, |
| 631 | sizeof(rda_t)); |
| 632 | |
| 633 | /* set up link and EOL = 0 in currently last descriptor. Only write |
| 634 | the link field since the SONIC may currently already access the |
| 635 | other fields. */ |
| 636 | |
| 637 | memcpy_toio(priv->base + lrdaaddr + 20, &rdaaddr, 4); |
| 638 | |
| 639 | /* advance indices */ |
| 640 | |
| 641 | priv->lastrxdescr = priv->nextrxdescr; |
| 642 | if ((++priv->nextrxdescr) >= priv->rxbufcnt) |
| 643 | priv->nextrxdescr = 0; |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | /* transmit interrupt */ |
| 648 | |
| 649 | static void irqtx_handler(struct net_device *dev) |
| 650 | { |
| 651 | ibmlana_priv *priv = netdev_priv(dev); |
| 652 | tda_t tda; |
| 653 | |
| 654 | /* fetch descriptor (we forgot the size ;-) */ |
| 655 | memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t)); |
| 656 | |
| 657 | /* update statistics */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 658 | dev->stats.tx_packets++; |
| 659 | dev->stats.tx_bytes += tda.length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
| 661 | /* update our pointers */ |
| 662 | priv->txused[priv->currtxdescr] = 0; |
| 663 | priv->txusedcnt--; |
| 664 | |
| 665 | /* if there are more descriptors present in RAM, start them */ |
| 666 | if (priv->txusedcnt > 0) |
| 667 | StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT); |
| 668 | |
| 669 | /* tell the upper layer we can go on transmitting */ |
| 670 | netif_wake_queue(dev); |
| 671 | } |
| 672 | |
| 673 | static void irqtxerr_handler(struct net_device *dev) |
| 674 | { |
| 675 | ibmlana_priv *priv = netdev_priv(dev); |
| 676 | tda_t tda; |
| 677 | |
| 678 | /* fetch descriptor to check status */ |
| 679 | memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t)); |
| 680 | |
| 681 | /* update statistics */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 682 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | if (tda.status & (TCREG_NCRS | TCREG_CRSL)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 684 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | if (tda.status & TCREG_EXC) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 686 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | if (tda.status & TCREG_OWC) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 688 | dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | if (tda.status & TCREG_FU) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 690 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
| 692 | /* update our pointers */ |
| 693 | priv->txused[priv->currtxdescr] = 0; |
| 694 | priv->txusedcnt--; |
| 695 | |
| 696 | /* if there are more descriptors present in RAM, start them */ |
| 697 | if (priv->txusedcnt > 0) |
| 698 | StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT); |
| 699 | |
| 700 | /* tell the upper layer we can go on transmitting */ |
| 701 | netif_wake_queue(dev); |
| 702 | } |
| 703 | |
| 704 | /* general interrupt entry */ |
| 705 | |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 706 | static irqreturn_t irq_handler(int dummy, void *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | { |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 708 | struct net_device *dev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | u16 ival; |
| 710 | |
| 711 | /* in case we're not meant... */ |
| 712 | if (!(inb(dev->base_addr + BCMREG) & BCMREG_IPEND)) |
| 713 | return IRQ_NONE; |
| 714 | |
| 715 | /* loop through the interrupt bits until everything is clear */ |
| 716 | while (1) { |
| 717 | ival = inw(dev->base_addr + SONIC_ISREG); |
| 718 | |
| 719 | if (ival & ISREG_RBE) { |
| 720 | irqrbe_handler(dev); |
| 721 | outw(ISREG_RBE, dev->base_addr + SONIC_ISREG); |
| 722 | } |
| 723 | if (ival & ISREG_PKTRX) { |
| 724 | irqrx_handler(dev); |
| 725 | outw(ISREG_PKTRX, dev->base_addr + SONIC_ISREG); |
| 726 | } |
| 727 | if (ival & ISREG_TXDN) { |
| 728 | irqtx_handler(dev); |
| 729 | outw(ISREG_TXDN, dev->base_addr + SONIC_ISREG); |
| 730 | } |
| 731 | if (ival & ISREG_TXER) { |
| 732 | irqtxerr_handler(dev); |
| 733 | outw(ISREG_TXER, dev->base_addr + SONIC_ISREG); |
| 734 | } |
| 735 | break; |
| 736 | } |
| 737 | return IRQ_HANDLED; |
| 738 | } |
| 739 | |
| 740 | /* ------------------------------------------------------------------------ |
| 741 | * driver methods |
| 742 | * ------------------------------------------------------------------------ */ |
| 743 | |
| 744 | /* MCA info */ |
| 745 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 746 | #if 0 /* info available elsewhere, but this is kept for reference */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | static int ibmlana_getinfo(char *buf, int slot, void *d) |
| 748 | { |
| 749 | int len = 0, i; |
| 750 | struct net_device *dev = (struct net_device *) d; |
| 751 | ibmlana_priv *priv; |
| 752 | |
| 753 | /* can't say anything about an uninitialized device... */ |
| 754 | |
| 755 | if (dev == NULL) |
| 756 | return len; |
| 757 | priv = netdev_priv(dev); |
| 758 | |
| 759 | /* print info */ |
| 760 | |
| 761 | len += sprintf(buf + len, "IRQ: %d\n", priv->realirq); |
| 762 | len += sprintf(buf + len, "I/O: %#lx\n", dev->base_addr); |
| 763 | len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start, dev->mem_end - 1); |
| 764 | len += sprintf(buf + len, "Transceiver: %s\n", MediaNames[priv->medium]); |
| 765 | len += sprintf(buf + len, "Device: %s\n", dev->name); |
| 766 | len += sprintf(buf + len, "MAC address:"); |
| 767 | for (i = 0; i < 6; i++) |
| 768 | len += sprintf(buf + len, " %02x", dev->dev_addr[i]); |
| 769 | buf[len++] = '\n'; |
| 770 | buf[len] = 0; |
| 771 | |
| 772 | return len; |
| 773 | } |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 774 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
| 776 | /* open driver. Means also initialization and start of LANCE */ |
| 777 | |
| 778 | static int ibmlana_open(struct net_device *dev) |
| 779 | { |
| 780 | int result; |
| 781 | ibmlana_priv *priv = netdev_priv(dev); |
| 782 | |
| 783 | /* register resources - only necessary for IRQ */ |
| 784 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 785 | result = request_irq(priv->realirq, irq_handler, IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | if (result != 0) { |
| 787 | printk(KERN_ERR "%s: failed to register irq %d\n", dev->name, dev->irq); |
| 788 | return result; |
| 789 | } |
| 790 | dev->irq = priv->realirq; |
| 791 | |
| 792 | /* set up the card and SONIC */ |
| 793 | InitBoard(dev); |
| 794 | |
| 795 | /* initialize operational flags */ |
| 796 | netif_start_queue(dev); |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | /* close driver. Shut down board and free allocated resources */ |
| 801 | |
| 802 | static int ibmlana_close(struct net_device *dev) |
| 803 | { |
| 804 | /* turn off board */ |
| 805 | |
| 806 | /* release resources */ |
| 807 | if (dev->irq != 0) |
| 808 | free_irq(dev->irq, dev); |
| 809 | dev->irq = 0; |
| 810 | return 0; |
| 811 | } |
| 812 | |
| 813 | /* transmit a block. */ |
| 814 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame^] | 815 | static netdev_tx_t ibmlana_tx(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | { |
| 817 | ibmlana_priv *priv = netdev_priv(dev); |
Patrick McHardy | 3790c8c | 2009-06-12 03:00:35 +0000 | [diff] [blame] | 818 | int tmplen, addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | unsigned long flags; |
| 820 | tda_t tda; |
| 821 | int baddr; |
| 822 | |
| 823 | /* find out if there are free slots for a frame to transmit. If not, |
| 824 | the upper layer is in deep desperation and we simply ignore the frame. */ |
| 825 | |
| 826 | if (priv->txusedcnt >= TXBUFCNT) { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 827 | dev->stats.tx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | goto tx_done; |
| 829 | } |
| 830 | |
| 831 | /* copy the frame data into the next free transmit buffer - fillup missing */ |
| 832 | tmplen = skb->len; |
| 833 | if (tmplen < 60) |
| 834 | tmplen = 60; |
| 835 | baddr = priv->txbufstart + (priv->nexttxdescr * PKTSIZE); |
| 836 | memcpy_toio(priv->base + baddr, skb->data, skb->len); |
| 837 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 838 | /* copy filler into RAM - in case we're filling up... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | we're filling a bit more than necessary, but that doesn't harm |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 840 | since the buffer is far larger... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | Sorry Linus for the filler string but I couldn't resist ;-) */ |
| 842 | |
| 843 | if (tmplen > skb->len) { |
| 844 | char *fill = "NetBSD is a nice OS too! "; |
| 845 | unsigned int destoffs = skb->len, l = strlen(fill); |
| 846 | |
| 847 | while (destoffs < tmplen) { |
| 848 | memcpy_toio(priv->base + baddr + destoffs, fill, l); |
| 849 | destoffs += l; |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | /* set up the new frame descriptor */ |
| 854 | addr = priv->tdastart + (priv->nexttxdescr * sizeof(tda_t)); |
| 855 | memcpy_fromio(&tda, priv->base + addr, sizeof(tda_t)); |
| 856 | tda.length = tda.fraglength = tmplen; |
| 857 | memcpy_toio(priv->base + addr, &tda, sizeof(tda_t)); |
| 858 | |
| 859 | /* if there were no active descriptors, trigger the SONIC */ |
| 860 | spin_lock_irqsave(&priv->lock, flags); |
| 861 | |
| 862 | priv->txusedcnt++; |
| 863 | priv->txused[priv->nexttxdescr] = 1; |
| 864 | |
| 865 | /* are all transmission slots used up ? */ |
| 866 | if (priv->txusedcnt >= TXBUFCNT) |
| 867 | netif_stop_queue(dev); |
| 868 | |
| 869 | if (priv->txusedcnt == 1) |
| 870 | StartTx(dev, priv->nexttxdescr); |
| 871 | priv->nexttxdescr = (priv->nexttxdescr + 1) % TXBUFCNT; |
| 872 | |
| 873 | spin_unlock_irqrestore(&priv->lock, flags); |
| 874 | tx_done: |
| 875 | dev_kfree_skb(skb); |
Patrick McHardy | 3790c8c | 2009-06-12 03:00:35 +0000 | [diff] [blame] | 876 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | } |
| 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | /* switch receiver mode. */ |
| 880 | |
| 881 | static void ibmlana_set_multicast_list(struct net_device *dev) |
| 882 | { |
| 883 | /* first stop the SONIC... */ |
| 884 | StopSONIC(dev); |
| 885 | /* ...then reinit it with the new flags */ |
| 886 | InitBoard(dev); |
| 887 | } |
| 888 | |
| 889 | /* ------------------------------------------------------------------------ |
| 890 | * hardware check |
| 891 | * ------------------------------------------------------------------------ */ |
| 892 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 893 | static int ibmlana_irq; |
| 894 | static int ibmlana_io; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | static int startslot; /* counts through slots when probing multiple devices */ |
| 896 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 897 | static short ibmlana_adapter_ids[] __initdata = { |
| 898 | IBM_LANA_ID, |
| 899 | 0x0000 |
| 900 | }; |
| 901 | |
Adrian Bunk | 976006f | 2008-01-30 22:02:10 +0200 | [diff] [blame] | 902 | static char *ibmlana_adapter_names[] __devinitdata = { |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 903 | "IBM LAN Adapter/A", |
| 904 | NULL |
| 905 | }; |
| 906 | |
Stephen Hemminger | d9c6d50 | 2009-03-26 15:11:33 +0000 | [diff] [blame] | 907 | |
| 908 | static const struct net_device_ops ibmlana_netdev_ops = { |
| 909 | .ndo_open = ibmlana_open, |
| 910 | .ndo_stop = ibmlana_close, |
| 911 | .ndo_start_xmit = ibmlana_tx, |
| 912 | .ndo_set_multicast_list = ibmlana_set_multicast_list, |
| 913 | .ndo_change_mtu = eth_change_mtu, |
| 914 | .ndo_set_mac_address = eth_mac_addr, |
| 915 | .ndo_validate_addr = eth_validate_addr, |
| 916 | }; |
| 917 | |
Adrian Bunk | b54e4f8 | 2008-01-30 22:02:08 +0200 | [diff] [blame] | 918 | static int __devinit ibmlana_init_one(struct device *kdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | { |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 920 | struct mca_device *mdev = to_mca_device(kdev); |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 921 | struct net_device *dev; |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 922 | int slot = mdev->slot, z, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | int base = 0, irq = 0, iobase = 0, memlen = 0; |
| 924 | ibmlana_priv *priv; |
| 925 | ibmlana_medium medium; |
| 926 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 927 | dev = alloc_etherdev(sizeof(ibmlana_priv)); |
| 928 | if (!dev) |
| 929 | return -ENOMEM; |
| 930 | |
| 931 | dev->irq = ibmlana_irq; |
| 932 | dev->base_addr = ibmlana_io; |
| 933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | base = dev->mem_start; |
| 935 | irq = dev->irq; |
| 936 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 937 | /* deduce card addresses */ |
| 938 | getaddrs(mdev, &base, &memlen, &iobase, &irq, &medium); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 940 | /* were we looking for something different ? */ |
| 941 | if (dev->irq && dev->irq != irq) { |
| 942 | rc = -ENODEV; |
| 943 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | } |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 945 | if (dev->mem_start && dev->mem_start != base) { |
| 946 | rc = -ENODEV; |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 947 | goto err_out; |
| 948 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
| 950 | /* announce success */ |
| 951 | printk(KERN_INFO "%s: IBM LAN Adapter/A found in slot %d\n", dev->name, slot + 1); |
| 952 | |
| 953 | /* try to obtain I/O range */ |
| 954 | if (!request_region(iobase, IBM_LANA_IORANGE, DRV_NAME)) { |
| 955 | printk(KERN_ERR "%s: cannot allocate I/O range at %#x!\n", DRV_NAME, iobase); |
| 956 | startslot = slot + 1; |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 957 | rc = -EBUSY; |
| 958 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | priv = netdev_priv(dev); |
| 962 | priv->slot = slot; |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 963 | priv->realirq = mca_device_transform_irq(mdev, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | priv->medium = medium; |
| 965 | spin_lock_init(&priv->lock); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | /* set base + irq for this device (irq not allocated so far) */ |
| 968 | |
| 969 | dev->irq = 0; |
| 970 | dev->mem_start = base; |
| 971 | dev->mem_end = base + memlen; |
| 972 | dev->base_addr = iobase; |
| 973 | |
| 974 | priv->base = ioremap(base, memlen); |
| 975 | if (!priv->base) { |
| 976 | printk(KERN_ERR "%s: cannot remap memory!\n", DRV_NAME); |
| 977 | startslot = slot + 1; |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 978 | rc = -EBUSY; |
| 979 | goto err_out_reg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | } |
| 981 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 982 | mca_device_set_name(mdev, ibmlana_adapter_names[mdev->index]); |
| 983 | mca_device_set_claim(mdev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | |
| 985 | /* set methods */ |
Stephen Hemminger | d9c6d50 | 2009-03-26 15:11:33 +0000 | [diff] [blame] | 986 | dev->netdev_ops = &ibmlana_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | dev->flags |= IFF_MULTICAST; |
| 988 | |
| 989 | /* copy out MAC address */ |
| 990 | |
| 991 | for (z = 0; z < sizeof(dev->dev_addr); z++) |
| 992 | dev->dev_addr[z] = inb(dev->base_addr + MACADDRPROM + z); |
| 993 | |
| 994 | /* print config */ |
| 995 | |
| 996 | printk(KERN_INFO "%s: IRQ %d, I/O %#lx, memory %#lx-%#lx, " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 997 | "MAC address %pM.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | dev->name, priv->realirq, dev->base_addr, |
| 999 | dev->mem_start, dev->mem_end - 1, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1000 | dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | printk(KERN_INFO "%s: %s medium\n", dev->name, MediaNames[priv->medium]); |
| 1002 | |
| 1003 | /* reset board */ |
| 1004 | |
| 1005 | ResetBoard(dev); |
| 1006 | |
| 1007 | /* next probe will start at next slot */ |
| 1008 | |
| 1009 | startslot = slot + 1; |
| 1010 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1011 | rc = register_netdev(dev); |
| 1012 | if (rc) |
| 1013 | goto err_out_claimed; |
| 1014 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1015 | dev_set_drvdata(kdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | return 0; |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1017 | |
| 1018 | err_out_claimed: |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1019 | mca_device_set_claim(mdev, 0); |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1020 | iounmap(priv->base); |
| 1021 | err_out_reg: |
| 1022 | release_region(iobase, IBM_LANA_IORANGE); |
| 1023 | err_out: |
| 1024 | free_netdev(dev); |
| 1025 | return rc; |
| 1026 | } |
| 1027 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1028 | static int ibmlana_remove_one(struct device *kdev) |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1029 | { |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1030 | struct mca_device *mdev = to_mca_device(kdev); |
| 1031 | struct net_device *dev = dev_get_drvdata(kdev); |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1032 | ibmlana_priv *priv = netdev_priv(dev); |
| 1033 | |
| 1034 | unregister_netdev(dev); |
| 1035 | /*DeinitBoard(dev); */ |
| 1036 | release_region(dev->base_addr, IBM_LANA_IORANGE); |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1037 | mca_device_set_claim(mdev, 0); |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1038 | iounmap(priv->base); |
| 1039 | free_netdev(dev); |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1040 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
| 1043 | /* ------------------------------------------------------------------------ |
| 1044 | * modularization support |
| 1045 | * ------------------------------------------------------------------------ */ |
| 1046 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1047 | module_param_named(irq, ibmlana_irq, int, 0); |
| 1048 | module_param_named(io, ibmlana_io, int, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | MODULE_PARM_DESC(irq, "IBM LAN/A IRQ number"); |
| 1050 | MODULE_PARM_DESC(io, "IBM LAN/A I/O base address"); |
| 1051 | MODULE_LICENSE("GPL"); |
| 1052 | |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1053 | static struct mca_driver ibmlana_driver = { |
| 1054 | .id_table = ibmlana_adapter_ids, |
| 1055 | .driver = { |
| 1056 | .name = "ibmlana", |
| 1057 | .bus = &mca_bus_type, |
| 1058 | .probe = ibmlana_init_one, |
| 1059 | .remove = ibmlana_remove_one, |
| 1060 | }, |
| 1061 | }; |
| 1062 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1063 | static int __init ibmlana_init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | { |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1065 | return mca_register_driver(&ibmlana_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | } |
| 1067 | |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1068 | static void __exit ibmlana_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | { |
Jeff Garzik | 3df5920 | 2007-11-04 21:53:26 -0500 | [diff] [blame] | 1070 | mca_unregister_driver(&ibmlana_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | } |
Jeff Garzik | fbe02d6 | 2007-11-04 21:52:49 -0500 | [diff] [blame] | 1072 | |
| 1073 | module_init(ibmlana_init_module); |
| 1074 | module_exit(ibmlana_cleanup_module); |