| 1 | /* |
| 2 | * ni6510 (am7990 'lance' chip) driver for Linux-net-3 |
| 3 | * BETAcode v0.71 (96/09/29) for 2.0.0 (or later) |
| 4 | * copyrights (c) 1994,1995,1996 by M.Hipp |
| 5 | * |
| 6 | * This driver can handle the old ni6510 board and the newer ni6510 |
| 7 | * EtherBlaster. (probably it also works with every full NE2100 |
| 8 | * compatible card) |
| 9 | * |
| 10 | * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 |
| 11 | * |
| 12 | * This is an extension to the Linux operating system, and is covered by the |
| 13 | * same GNU General Public License that covers the Linux-kernel. |
| 14 | * |
| 15 | * comments/bugs/suggestions can be sent to: |
| 16 | * Michael Hipp |
| 17 | * email: hippm@informatik.uni-tuebingen.de |
| 18 | * |
| 19 | * sources: |
| 20 | * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' |
| 21 | * and from the original drivers by D.Becker |
| 22 | * |
| 23 | * known problems: |
| 24 | * - on some PCI boards (including my own) the card/board/ISA-bridge has |
| 25 | * problems with bus master DMA. This results in lotsa overruns. |
| 26 | * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef |
| 27 | * the XMT and RCV_VIA_SKB option .. this reduces driver performance. |
| 28 | * Or just play with your BIOS options to optimize ISA-DMA access. |
| 29 | * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE |
| 30 | * defines -> please report me your experience then |
| 31 | * - Harald reported for ASUS SP3G mainboards, that you should use |
| 32 | * the 'optimal settings' from the user's manual on page 3-12! |
| 33 | * |
| 34 | * credits: |
| 35 | * thanx to Jason Sullivan for sending me a ni6510 card! |
| 36 | * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig |
| 37 | * |
| 38 | * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) |
| 39 | * average: FTP -> 8384421 bytes received in 8.5 seconds |
| 40 | * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) |
| 41 | * peak: FTP -> 8384421 bytes received in 7.5 seconds |
| 42 | * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) |
| 43 | */ |
| 44 | |
| 45 | /* |
| 46 | * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) |
| 47 | * 96.Sept.29: virt_to_bus stuff added for new memory modell |
| 48 | * 96.April.29: Added Harald Koenig's Patches (MH) |
| 49 | * 96.April.13: enhanced error handling .. more tests (MH) |
| 50 | * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) |
| 51 | * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) |
| 52 | * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) |
| 53 | * hopefully no more 16MB limit |
| 54 | * |
| 55 | * 95.Nov.18: multicast tweaked (AC). |
| 56 | * |
| 57 | * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) |
| 58 | * |
| 59 | * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) |
| 60 | */ |
| 61 | |
| 62 | #include <linux/kernel.h> |
| 63 | #include <linux/string.h> |
| 64 | #include <linux/errno.h> |
| 65 | #include <linux/ioport.h> |
| 66 | #include <linux/slab.h> |
| 67 | #include <linux/interrupt.h> |
| 68 | #include <linux/delay.h> |
| 69 | #include <linux/init.h> |
| 70 | #include <linux/netdevice.h> |
| 71 | #include <linux/etherdevice.h> |
| 72 | #include <linux/skbuff.h> |
| 73 | #include <linux/module.h> |
| 74 | #include <linux/bitops.h> |
| 75 | |
| 76 | #include <asm/io.h> |
| 77 | #include <asm/dma.h> |
| 78 | |
| 79 | #include "ni65.h" |
| 80 | |
| 81 | /* |
| 82 | * the current setting allows an acceptable performance |
| 83 | * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in |
| 84 | * the header of this file |
| 85 | * 'invert' the defines for max. performance. This may cause DMA problems |
| 86 | * on some boards (e.g on my ASUS SP3G) |
| 87 | */ |
| 88 | #undef XMT_VIA_SKB |
| 89 | #undef RCV_VIA_SKB |
| 90 | #define RCV_PARANOIA_CHECK |
| 91 | |
| 92 | #define MID_PERFORMANCE |
| 93 | |
| 94 | #if defined( LOW_PERFORMANCE ) |
| 95 | static int isa0=7,isa1=7,csr80=0x0c10; |
| 96 | #elif defined( MID_PERFORMANCE ) |
| 97 | static int isa0=5,isa1=5,csr80=0x2810; |
| 98 | #else /* high performance */ |
| 99 | static int isa0=4,isa1=4,csr80=0x0017; |
| 100 | #endif |
| 101 | |
| 102 | /* |
| 103 | * a few card/vendor specific defines |
| 104 | */ |
| 105 | #define NI65_ID0 0x00 |
| 106 | #define NI65_ID1 0x55 |
| 107 | #define NI65_EB_ID0 0x52 |
| 108 | #define NI65_EB_ID1 0x44 |
| 109 | #define NE2100_ID0 0x57 |
| 110 | #define NE2100_ID1 0x57 |
| 111 | |
| 112 | #define PORT p->cmdr_addr |
| 113 | |
| 114 | /* |
| 115 | * buffer configuration |
| 116 | */ |
| 117 | #if 1 |
| 118 | #define RMDNUM 16 |
| 119 | #define RMDNUMMASK 0x80000000 |
| 120 | #else |
| 121 | #define RMDNUM 8 |
| 122 | #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ |
| 123 | #endif |
| 124 | |
| 125 | #if 0 |
| 126 | #define TMDNUM 1 |
| 127 | #define TMDNUMMASK 0x00000000 |
| 128 | #else |
| 129 | #define TMDNUM 4 |
| 130 | #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ |
| 131 | #endif |
| 132 | |
| 133 | /* slightly oversized */ |
| 134 | #define R_BUF_SIZE 1544 |
| 135 | #define T_BUF_SIZE 1544 |
| 136 | |
| 137 | /* |
| 138 | * lance register defines |
| 139 | */ |
| 140 | #define L_DATAREG 0x00 |
| 141 | #define L_ADDRREG 0x02 |
| 142 | #define L_RESET 0x04 |
| 143 | #define L_CONFIG 0x05 |
| 144 | #define L_BUSIF 0x06 |
| 145 | |
| 146 | /* |
| 147 | * to access the lance/am7990-regs, you have to write |
| 148 | * reg-number into L_ADDRREG, then you can access it using L_DATAREG |
| 149 | */ |
| 150 | #define CSR0 0x00 |
| 151 | #define CSR1 0x01 |
| 152 | #define CSR2 0x02 |
| 153 | #define CSR3 0x03 |
| 154 | |
| 155 | #define INIT_RING_BEFORE_START 0x1 |
| 156 | #define FULL_RESET_ON_ERROR 0x2 |
| 157 | |
| 158 | #if 0 |
| 159 | #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ |
| 160 | outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} |
| 161 | #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ |
| 162 | inw(PORT+L_DATAREG)) |
| 163 | #if 0 |
| 164 | #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} |
| 165 | #else |
| 166 | #define writedatareg(val) { writereg(val,CSR0); } |
| 167 | #endif |
| 168 | #else |
| 169 | #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} |
| 170 | #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) |
| 171 | #define writedatareg(val) { writereg(val,CSR0); } |
| 172 | #endif |
| 173 | |
| 174 | static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; |
| 175 | |
| 176 | static struct card { |
| 177 | unsigned char id0,id1; |
| 178 | short id_offset; |
| 179 | short total_size; |
| 180 | short cmd_offset; |
| 181 | short addr_offset; |
| 182 | unsigned char *vendor_id; |
| 183 | char *cardname; |
| 184 | unsigned long config; |
| 185 | } cards[] = { |
| 186 | { |
| 187 | .id0 = NI65_ID0, |
| 188 | .id1 = NI65_ID1, |
| 189 | .id_offset = 0x0e, |
| 190 | .total_size = 0x10, |
| 191 | .cmd_offset = 0x0, |
| 192 | .addr_offset = 0x8, |
| 193 | .vendor_id = ni_vendor, |
| 194 | .cardname = "ni6510", |
| 195 | .config = 0x1, |
| 196 | }, |
| 197 | { |
| 198 | .id0 = NI65_EB_ID0, |
| 199 | .id1 = NI65_EB_ID1, |
| 200 | .id_offset = 0x0e, |
| 201 | .total_size = 0x18, |
| 202 | .cmd_offset = 0x10, |
| 203 | .addr_offset = 0x0, |
| 204 | .vendor_id = ni_vendor, |
| 205 | .cardname = "ni6510 EtherBlaster", |
| 206 | .config = 0x2, |
| 207 | }, |
| 208 | { |
| 209 | .id0 = NE2100_ID0, |
| 210 | .id1 = NE2100_ID1, |
| 211 | .id_offset = 0x0e, |
| 212 | .total_size = 0x18, |
| 213 | .cmd_offset = 0x10, |
| 214 | .addr_offset = 0x0, |
| 215 | .vendor_id = NULL, |
| 216 | .cardname = "generic NE2100", |
| 217 | .config = 0x0, |
| 218 | }, |
| 219 | }; |
| 220 | #define NUM_CARDS 3 |
| 221 | |
| 222 | struct priv |
| 223 | { |
| 224 | struct rmd rmdhead[RMDNUM]; |
| 225 | struct tmd tmdhead[TMDNUM]; |
| 226 | struct init_block ib; |
| 227 | int rmdnum; |
| 228 | int tmdnum,tmdlast; |
| 229 | #ifdef RCV_VIA_SKB |
| 230 | struct sk_buff *recv_skb[RMDNUM]; |
| 231 | #else |
| 232 | void *recvbounce[RMDNUM]; |
| 233 | #endif |
| 234 | #ifdef XMT_VIA_SKB |
| 235 | struct sk_buff *tmd_skb[TMDNUM]; |
| 236 | #endif |
| 237 | void *tmdbounce[TMDNUM]; |
| 238 | int tmdbouncenum; |
| 239 | int lock,xmit_queued; |
| 240 | |
| 241 | void *self; |
| 242 | int cmdr_addr; |
| 243 | int cardno; |
| 244 | int features; |
| 245 | spinlock_t ring_lock; |
| 246 | }; |
| 247 | |
| 248 | static int ni65_probe1(struct net_device *dev,int); |
| 249 | static irqreturn_t ni65_interrupt(int irq, void * dev_id); |
| 250 | static void ni65_recv_intr(struct net_device *dev,int); |
| 251 | static void ni65_xmit_intr(struct net_device *dev,int); |
| 252 | static int ni65_open(struct net_device *dev); |
| 253 | static int ni65_lance_reinit(struct net_device *dev); |
| 254 | static void ni65_init_lance(struct priv *p,unsigned char*,int,int); |
| 255 | static netdev_tx_t ni65_send_packet(struct sk_buff *skb, |
| 256 | struct net_device *dev); |
| 257 | static void ni65_timeout(struct net_device *dev); |
| 258 | static int ni65_close(struct net_device *dev); |
| 259 | static int ni65_alloc_buffer(struct net_device *dev); |
| 260 | static void ni65_free_buffer(struct priv *p); |
| 261 | static void set_multicast_list(struct net_device *dev); |
| 262 | |
| 263 | static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ |
| 264 | static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ |
| 265 | |
| 266 | static int debuglevel = 1; |
| 267 | |
| 268 | /* |
| 269 | * set 'performance' registers .. we must STOP lance for that |
| 270 | */ |
| 271 | static void ni65_set_performance(struct priv *p) |
| 272 | { |
| 273 | writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ |
| 274 | |
| 275 | if( !(cards[p->cardno].config & 0x02) ) |
| 276 | return; |
| 277 | |
| 278 | outw(80,PORT+L_ADDRREG); |
| 279 | if(inw(PORT+L_ADDRREG) != 80) |
| 280 | return; |
| 281 | |
| 282 | writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ |
| 283 | outw(0,PORT+L_ADDRREG); |
| 284 | outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ |
| 285 | outw(1,PORT+L_ADDRREG); |
| 286 | outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ |
| 287 | |
| 288 | outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * open interface (up) |
| 293 | */ |
| 294 | static int ni65_open(struct net_device *dev) |
| 295 | { |
| 296 | struct priv *p = dev->ml_priv; |
| 297 | int irqval = request_irq(dev->irq, &ni65_interrupt,0, |
| 298 | cards[p->cardno].cardname,dev); |
| 299 | if (irqval) { |
| 300 | printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n", |
| 301 | dev->name,dev->irq, irqval); |
| 302 | return -EAGAIN; |
| 303 | } |
| 304 | |
| 305 | if(ni65_lance_reinit(dev)) |
| 306 | { |
| 307 | netif_start_queue(dev); |
| 308 | return 0; |
| 309 | } |
| 310 | else |
| 311 | { |
| 312 | free_irq(dev->irq,dev); |
| 313 | return -EAGAIN; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | /* |
| 318 | * close interface (down) |
| 319 | */ |
| 320 | static int ni65_close(struct net_device *dev) |
| 321 | { |
| 322 | struct priv *p = dev->ml_priv; |
| 323 | |
| 324 | netif_stop_queue(dev); |
| 325 | |
| 326 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */ |
| 327 | |
| 328 | #ifdef XMT_VIA_SKB |
| 329 | { |
| 330 | int i; |
| 331 | for(i=0;i<TMDNUM;i++) |
| 332 | { |
| 333 | if(p->tmd_skb[i]) { |
| 334 | dev_kfree_skb(p->tmd_skb[i]); |
| 335 | p->tmd_skb[i] = NULL; |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | #endif |
| 340 | free_irq(dev->irq,dev); |
| 341 | return 0; |
| 342 | } |
| 343 | |
| 344 | static void cleanup_card(struct net_device *dev) |
| 345 | { |
| 346 | struct priv *p = dev->ml_priv; |
| 347 | disable_dma(dev->dma); |
| 348 | free_dma(dev->dma); |
| 349 | release_region(dev->base_addr, cards[p->cardno].total_size); |
| 350 | ni65_free_buffer(p); |
| 351 | } |
| 352 | |
| 353 | /* set: io,irq,dma or set it when calling insmod */ |
| 354 | static int irq; |
| 355 | static int io; |
| 356 | static int dma; |
| 357 | |
| 358 | /* |
| 359 | * Probe The Card (not the lance-chip) |
| 360 | */ |
| 361 | struct net_device * __init ni65_probe(int unit) |
| 362 | { |
| 363 | struct net_device *dev = alloc_etherdev(0); |
| 364 | static int ports[] = {0x360,0x300,0x320,0x340, 0}; |
| 365 | int *port; |
| 366 | int err = 0; |
| 367 | |
| 368 | if (!dev) |
| 369 | return ERR_PTR(-ENOMEM); |
| 370 | |
| 371 | if (unit >= 0) { |
| 372 | sprintf(dev->name, "eth%d", unit); |
| 373 | netdev_boot_setup_check(dev); |
| 374 | irq = dev->irq; |
| 375 | dma = dev->dma; |
| 376 | } else { |
| 377 | dev->base_addr = io; |
| 378 | } |
| 379 | |
| 380 | if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ |
| 381 | err = ni65_probe1(dev, dev->base_addr); |
| 382 | } else if (dev->base_addr > 0) { /* Don't probe at all. */ |
| 383 | err = -ENXIO; |
| 384 | } else { |
| 385 | for (port = ports; *port && ni65_probe1(dev, *port); port++) |
| 386 | ; |
| 387 | if (!*port) |
| 388 | err = -ENODEV; |
| 389 | } |
| 390 | if (err) |
| 391 | goto out; |
| 392 | |
| 393 | err = register_netdev(dev); |
| 394 | if (err) |
| 395 | goto out1; |
| 396 | return dev; |
| 397 | out1: |
| 398 | cleanup_card(dev); |
| 399 | out: |
| 400 | free_netdev(dev); |
| 401 | return ERR_PTR(err); |
| 402 | } |
| 403 | |
| 404 | static const struct net_device_ops ni65_netdev_ops = { |
| 405 | .ndo_open = ni65_open, |
| 406 | .ndo_stop = ni65_close, |
| 407 | .ndo_start_xmit = ni65_send_packet, |
| 408 | .ndo_tx_timeout = ni65_timeout, |
| 409 | .ndo_set_multicast_list = set_multicast_list, |
| 410 | .ndo_change_mtu = eth_change_mtu, |
| 411 | .ndo_set_mac_address = eth_mac_addr, |
| 412 | .ndo_validate_addr = eth_validate_addr, |
| 413 | }; |
| 414 | |
| 415 | /* |
| 416 | * this is the real card probe .. |
| 417 | */ |
| 418 | static int __init ni65_probe1(struct net_device *dev,int ioaddr) |
| 419 | { |
| 420 | int i,j; |
| 421 | struct priv *p; |
| 422 | unsigned long flags; |
| 423 | |
| 424 | dev->irq = irq; |
| 425 | dev->dma = dma; |
| 426 | |
| 427 | for(i=0;i<NUM_CARDS;i++) { |
| 428 | if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) |
| 429 | continue; |
| 430 | if(cards[i].id_offset >= 0) { |
| 431 | if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 || |
| 432 | inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) { |
| 433 | release_region(ioaddr, cards[i].total_size); |
| 434 | continue; |
| 435 | } |
| 436 | } |
| 437 | if(cards[i].vendor_id) { |
| 438 | for(j=0;j<3;j++) |
| 439 | if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) { |
| 440 | release_region(ioaddr, cards[i].total_size); |
| 441 | continue; |
| 442 | } |
| 443 | } |
| 444 | break; |
| 445 | } |
| 446 | if(i == NUM_CARDS) |
| 447 | return -ENODEV; |
| 448 | |
| 449 | for(j=0;j<6;j++) |
| 450 | dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j); |
| 451 | |
| 452 | if( (j=ni65_alloc_buffer(dev)) < 0) { |
| 453 | release_region(ioaddr, cards[i].total_size); |
| 454 | return j; |
| 455 | } |
| 456 | p = dev->ml_priv; |
| 457 | p->cmdr_addr = ioaddr + cards[i].cmd_offset; |
| 458 | p->cardno = i; |
| 459 | spin_lock_init(&p->ring_lock); |
| 460 | |
| 461 | printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr); |
| 462 | |
| 463 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ |
| 464 | if( (j=readreg(CSR0)) != 0x4) { |
| 465 | printk("failed.\n"); |
| 466 | printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); |
| 467 | ni65_free_buffer(p); |
| 468 | release_region(ioaddr, cards[p->cardno].total_size); |
| 469 | return -EAGAIN; |
| 470 | } |
| 471 | |
| 472 | outw(88,PORT+L_ADDRREG); |
| 473 | if(inw(PORT+L_ADDRREG) == 88) { |
| 474 | unsigned long v; |
| 475 | v = inw(PORT+L_DATAREG); |
| 476 | v <<= 16; |
| 477 | outw(89,PORT+L_ADDRREG); |
| 478 | v |= inw(PORT+L_DATAREG); |
| 479 | printk("Version %#08lx, ",v); |
| 480 | p->features = INIT_RING_BEFORE_START; |
| 481 | } |
| 482 | else { |
| 483 | printk("ancient LANCE, "); |
| 484 | p->features = 0x0; |
| 485 | } |
| 486 | |
| 487 | if(test_bit(0,&cards[i].config)) { |
| 488 | dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3]; |
| 489 | dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3]; |
| 490 | printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma); |
| 491 | } |
| 492 | else { |
| 493 | if(dev->dma == 0) { |
| 494 | /* 'stuck test' from lance.c */ |
| 495 | unsigned long dma_channels = |
| 496 | ((inb(DMA1_STAT_REG) >> 4) & 0x0f) |
| 497 | | (inb(DMA2_STAT_REG) & 0xf0); |
| 498 | for(i=1;i<5;i++) { |
| 499 | int dma = dmatab[i]; |
| 500 | if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510")) |
| 501 | continue; |
| 502 | |
| 503 | flags=claim_dma_lock(); |
| 504 | disable_dma(dma); |
| 505 | set_dma_mode(dma,DMA_MODE_CASCADE); |
| 506 | enable_dma(dma); |
| 507 | release_dma_lock(flags); |
| 508 | |
| 509 | ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ |
| 510 | |
| 511 | flags=claim_dma_lock(); |
| 512 | disable_dma(dma); |
| 513 | free_dma(dma); |
| 514 | release_dma_lock(flags); |
| 515 | |
| 516 | if(readreg(CSR0) & CSR0_IDON) |
| 517 | break; |
| 518 | } |
| 519 | if(i == 5) { |
| 520 | printk("failed.\n"); |
| 521 | printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); |
| 522 | ni65_free_buffer(p); |
| 523 | release_region(ioaddr, cards[p->cardno].total_size); |
| 524 | return -EAGAIN; |
| 525 | } |
| 526 | dev->dma = dmatab[i]; |
| 527 | printk("DMA %d (autodetected), ",dev->dma); |
| 528 | } |
| 529 | else |
| 530 | printk("DMA %d (assigned), ",dev->dma); |
| 531 | |
| 532 | if(dev->irq < 2) |
| 533 | { |
| 534 | unsigned long irq_mask; |
| 535 | |
| 536 | ni65_init_lance(p,dev->dev_addr,0,0); |
| 537 | irq_mask = probe_irq_on(); |
| 538 | writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ |
| 539 | msleep(20); |
| 540 | dev->irq = probe_irq_off(irq_mask); |
| 541 | if(!dev->irq) |
| 542 | { |
| 543 | printk("Failed to detect IRQ line!\n"); |
| 544 | ni65_free_buffer(p); |
| 545 | release_region(ioaddr, cards[p->cardno].total_size); |
| 546 | return -EAGAIN; |
| 547 | } |
| 548 | printk("IRQ %d (autodetected).\n",dev->irq); |
| 549 | } |
| 550 | else |
| 551 | printk("IRQ %d (assigned).\n",dev->irq); |
| 552 | } |
| 553 | |
| 554 | if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0) |
| 555 | { |
| 556 | printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); |
| 557 | ni65_free_buffer(p); |
| 558 | release_region(ioaddr, cards[p->cardno].total_size); |
| 559 | return -EAGAIN; |
| 560 | } |
| 561 | |
| 562 | dev->base_addr = ioaddr; |
| 563 | dev->netdev_ops = &ni65_netdev_ops; |
| 564 | dev->watchdog_timeo = HZ/2; |
| 565 | |
| 566 | return 0; /* everything is OK */ |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * set lance register and trigger init |
| 571 | */ |
| 572 | static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode) |
| 573 | { |
| 574 | int i; |
| 575 | u32 pib; |
| 576 | |
| 577 | writereg(CSR0_CLRALL|CSR0_STOP,CSR0); |
| 578 | |
| 579 | for(i=0;i<6;i++) |
| 580 | p->ib.eaddr[i] = daddr[i]; |
| 581 | |
| 582 | for(i=0;i<8;i++) |
| 583 | p->ib.filter[i] = filter; |
| 584 | p->ib.mode = mode; |
| 585 | |
| 586 | p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; |
| 587 | p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; |
| 588 | writereg(0,CSR3); /* busmaster/no word-swap */ |
| 589 | pib = (u32) isa_virt_to_bus(&p->ib); |
| 590 | writereg(pib & 0xffff,CSR1); |
| 591 | writereg(pib >> 16,CSR2); |
| 592 | |
| 593 | writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ |
| 594 | |
| 595 | for(i=0;i<32;i++) |
| 596 | { |
| 597 | mdelay(4); |
| 598 | if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) ) |
| 599 | break; /* init ok ? */ |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * allocate memory area and check the 16MB border |
| 605 | */ |
| 606 | static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type) |
| 607 | { |
| 608 | struct sk_buff *skb=NULL; |
| 609 | unsigned char *ptr; |
| 610 | void *ret; |
| 611 | |
| 612 | if(type) { |
| 613 | ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA); |
| 614 | if(!skb) { |
| 615 | printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); |
| 616 | return NULL; |
| 617 | } |
| 618 | skb_reserve(skb,2+16); |
| 619 | skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */ |
| 620 | ptr = skb->data; |
| 621 | } |
| 622 | else { |
| 623 | ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA); |
| 624 | if(!ret) { |
| 625 | printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); |
| 626 | return NULL; |
| 627 | } |
| 628 | } |
| 629 | if( (u32) virt_to_phys(ptr+size) > 0x1000000) { |
| 630 | printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what); |
| 631 | if(type) |
| 632 | kfree_skb(skb); |
| 633 | else |
| 634 | kfree(ptr); |
| 635 | return NULL; |
| 636 | } |
| 637 | return ret; |
| 638 | } |
| 639 | |
| 640 | /* |
| 641 | * allocate all memory structures .. send/recv buffers etc ... |
| 642 | */ |
| 643 | static int ni65_alloc_buffer(struct net_device *dev) |
| 644 | { |
| 645 | unsigned char *ptr; |
| 646 | struct priv *p; |
| 647 | int i; |
| 648 | |
| 649 | /* |
| 650 | * we need 8-aligned memory .. |
| 651 | */ |
| 652 | ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0); |
| 653 | if(!ptr) |
| 654 | return -ENOMEM; |
| 655 | |
| 656 | p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); |
| 657 | memset((char *)p, 0, sizeof(struct priv)); |
| 658 | p->self = ptr; |
| 659 | |
| 660 | for(i=0;i<TMDNUM;i++) |
| 661 | { |
| 662 | #ifdef XMT_VIA_SKB |
| 663 | p->tmd_skb[i] = NULL; |
| 664 | #endif |
| 665 | p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0); |
| 666 | if(!p->tmdbounce[i]) { |
| 667 | ni65_free_buffer(p); |
| 668 | return -ENOMEM; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | for(i=0;i<RMDNUM;i++) |
| 673 | { |
| 674 | #ifdef RCV_VIA_SKB |
| 675 | p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1); |
| 676 | if(!p->recv_skb[i]) { |
| 677 | ni65_free_buffer(p); |
| 678 | return -ENOMEM; |
| 679 | } |
| 680 | #else |
| 681 | p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0); |
| 682 | if(!p->recvbounce[i]) { |
| 683 | ni65_free_buffer(p); |
| 684 | return -ENOMEM; |
| 685 | } |
| 686 | #endif |
| 687 | } |
| 688 | |
| 689 | return 0; /* everything is OK */ |
| 690 | } |
| 691 | |
| 692 | /* |
| 693 | * free buffers and private struct |
| 694 | */ |
| 695 | static void ni65_free_buffer(struct priv *p) |
| 696 | { |
| 697 | int i; |
| 698 | |
| 699 | if(!p) |
| 700 | return; |
| 701 | |
| 702 | for(i=0;i<TMDNUM;i++) { |
| 703 | kfree(p->tmdbounce[i]); |
| 704 | #ifdef XMT_VIA_SKB |
| 705 | if(p->tmd_skb[i]) |
| 706 | dev_kfree_skb(p->tmd_skb[i]); |
| 707 | #endif |
| 708 | } |
| 709 | |
| 710 | for(i=0;i<RMDNUM;i++) |
| 711 | { |
| 712 | #ifdef RCV_VIA_SKB |
| 713 | if(p->recv_skb[i]) |
| 714 | dev_kfree_skb(p->recv_skb[i]); |
| 715 | #else |
| 716 | kfree(p->recvbounce[i]); |
| 717 | #endif |
| 718 | } |
| 719 | kfree(p->self); |
| 720 | } |
| 721 | |
| 722 | |
| 723 | /* |
| 724 | * stop and (re)start lance .. e.g after an error |
| 725 | */ |
| 726 | static void ni65_stop_start(struct net_device *dev,struct priv *p) |
| 727 | { |
| 728 | int csr0 = CSR0_INEA; |
| 729 | |
| 730 | writedatareg(CSR0_STOP); |
| 731 | |
| 732 | if(debuglevel > 1) |
| 733 | printk(KERN_DEBUG "ni65_stop_start\n"); |
| 734 | |
| 735 | if(p->features & INIT_RING_BEFORE_START) { |
| 736 | int i; |
| 737 | #ifdef XMT_VIA_SKB |
| 738 | struct sk_buff *skb_save[TMDNUM]; |
| 739 | #endif |
| 740 | unsigned long buffer[TMDNUM]; |
| 741 | short blen[TMDNUM]; |
| 742 | |
| 743 | if(p->xmit_queued) { |
| 744 | while(1) { |
| 745 | if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN)) |
| 746 | break; |
| 747 | p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); |
| 748 | if(p->tmdlast == p->tmdnum) |
| 749 | break; |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | for(i=0;i<TMDNUM;i++) { |
| 754 | struct tmd *tmdp = p->tmdhead + i; |
| 755 | #ifdef XMT_VIA_SKB |
| 756 | skb_save[i] = p->tmd_skb[i]; |
| 757 | #endif |
| 758 | buffer[i] = (u32) isa_bus_to_virt(tmdp->u.buffer); |
| 759 | blen[i] = tmdp->blen; |
| 760 | tmdp->u.s.status = 0x0; |
| 761 | } |
| 762 | |
| 763 | for(i=0;i<RMDNUM;i++) { |
| 764 | struct rmd *rmdp = p->rmdhead + i; |
| 765 | rmdp->u.s.status = RCV_OWN; |
| 766 | } |
| 767 | p->tmdnum = p->xmit_queued = 0; |
| 768 | writedatareg(CSR0_STRT | csr0); |
| 769 | |
| 770 | for(i=0;i<TMDNUM;i++) { |
| 771 | int num = (i + p->tmdlast) & (TMDNUM-1); |
| 772 | p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */ |
| 773 | p->tmdhead[i].blen = blen[num]; |
| 774 | if(p->tmdhead[i].u.s.status & XMIT_OWN) { |
| 775 | p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); |
| 776 | p->xmit_queued = 1; |
| 777 | writedatareg(CSR0_TDMD | CSR0_INEA | csr0); |
| 778 | } |
| 779 | #ifdef XMT_VIA_SKB |
| 780 | p->tmd_skb[i] = skb_save[num]; |
| 781 | #endif |
| 782 | } |
| 783 | p->rmdnum = p->tmdlast = 0; |
| 784 | if(!p->lock) |
| 785 | if (p->tmdnum || !p->xmit_queued) |
| 786 | netif_wake_queue(dev); |
| 787 | dev->trans_start = jiffies; |
| 788 | } |
| 789 | else |
| 790 | writedatareg(CSR0_STRT | csr0); |
| 791 | } |
| 792 | |
| 793 | /* |
| 794 | * init lance (write init-values .. init-buffers) (open-helper) |
| 795 | */ |
| 796 | static int ni65_lance_reinit(struct net_device *dev) |
| 797 | { |
| 798 | int i; |
| 799 | struct priv *p = dev->ml_priv; |
| 800 | unsigned long flags; |
| 801 | |
| 802 | p->lock = 0; |
| 803 | p->xmit_queued = 0; |
| 804 | |
| 805 | flags=claim_dma_lock(); |
| 806 | disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ |
| 807 | set_dma_mode(dev->dma,DMA_MODE_CASCADE); |
| 808 | enable_dma(dev->dma); |
| 809 | release_dma_lock(flags); |
| 810 | |
| 811 | outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ |
| 812 | if( (i=readreg(CSR0) ) != 0x4) |
| 813 | { |
| 814 | printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name, |
| 815 | cards[p->cardno].cardname,(int) i); |
| 816 | flags=claim_dma_lock(); |
| 817 | disable_dma(dev->dma); |
| 818 | release_dma_lock(flags); |
| 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0; |
| 823 | for(i=0;i<TMDNUM;i++) |
| 824 | { |
| 825 | struct tmd *tmdp = p->tmdhead + i; |
| 826 | #ifdef XMT_VIA_SKB |
| 827 | if(p->tmd_skb[i]) { |
| 828 | dev_kfree_skb(p->tmd_skb[i]); |
| 829 | p->tmd_skb[i] = NULL; |
| 830 | } |
| 831 | #endif |
| 832 | tmdp->u.buffer = 0x0; |
| 833 | tmdp->u.s.status = XMIT_START | XMIT_END; |
| 834 | tmdp->blen = tmdp->status2 = 0; |
| 835 | } |
| 836 | |
| 837 | for(i=0;i<RMDNUM;i++) |
| 838 | { |
| 839 | struct rmd *rmdp = p->rmdhead + i; |
| 840 | #ifdef RCV_VIA_SKB |
| 841 | rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data); |
| 842 | #else |
| 843 | rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]); |
| 844 | #endif |
| 845 | rmdp->blen = -(R_BUF_SIZE-8); |
| 846 | rmdp->mlen = 0; |
| 847 | rmdp->u.s.status = RCV_OWN; |
| 848 | } |
| 849 | |
| 850 | if(dev->flags & IFF_PROMISC) |
| 851 | ni65_init_lance(p,dev->dev_addr,0x00,M_PROM); |
| 852 | else if(dev->mc_count || dev->flags & IFF_ALLMULTI) |
| 853 | ni65_init_lance(p,dev->dev_addr,0xff,0x0); |
| 854 | else |
| 855 | ni65_init_lance(p,dev->dev_addr,0x00,0x00); |
| 856 | |
| 857 | /* |
| 858 | * ni65_set_lance_mem() sets L_ADDRREG to CSR0 |
| 859 | * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED |
| 860 | */ |
| 861 | |
| 862 | if(inw(PORT+L_DATAREG) & CSR0_IDON) { |
| 863 | ni65_set_performance(p); |
| 864 | /* init OK: start lance , enable interrupts */ |
| 865 | writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); |
| 866 | return 1; /* ->OK */ |
| 867 | } |
| 868 | printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); |
| 869 | flags=claim_dma_lock(); |
| 870 | disable_dma(dev->dma); |
| 871 | release_dma_lock(flags); |
| 872 | return 0; /* ->Error */ |
| 873 | } |
| 874 | |
| 875 | /* |
| 876 | * interrupt handler |
| 877 | */ |
| 878 | static irqreturn_t ni65_interrupt(int irq, void * dev_id) |
| 879 | { |
| 880 | int csr0 = 0; |
| 881 | struct net_device *dev = dev_id; |
| 882 | struct priv *p; |
| 883 | int bcnt = 32; |
| 884 | |
| 885 | p = dev->ml_priv; |
| 886 | |
| 887 | spin_lock(&p->ring_lock); |
| 888 | |
| 889 | while(--bcnt) { |
| 890 | csr0 = inw(PORT+L_DATAREG); |
| 891 | |
| 892 | #if 0 |
| 893 | writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */ |
| 894 | #else |
| 895 | writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */ |
| 896 | #endif |
| 897 | |
| 898 | if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT))) |
| 899 | break; |
| 900 | |
| 901 | if(csr0 & CSR0_RINT) /* RECV-int? */ |
| 902 | ni65_recv_intr(dev,csr0); |
| 903 | if(csr0 & CSR0_TINT) /* XMIT-int? */ |
| 904 | ni65_xmit_intr(dev,csr0); |
| 905 | |
| 906 | if(csr0 & CSR0_ERR) |
| 907 | { |
| 908 | if(debuglevel > 1) |
| 909 | printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); |
| 910 | if(csr0 & CSR0_BABL) |
| 911 | dev->stats.tx_errors++; |
| 912 | if(csr0 & CSR0_MISS) { |
| 913 | int i; |
| 914 | for(i=0;i<RMDNUM;i++) |
| 915 | printk("%02x ",p->rmdhead[i].u.s.status); |
| 916 | printk("\n"); |
| 917 | dev->stats.rx_errors++; |
| 918 | } |
| 919 | if(csr0 & CSR0_MERR) { |
| 920 | if(debuglevel > 1) |
| 921 | printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0); |
| 922 | ni65_stop_start(dev,p); |
| 923 | } |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | #ifdef RCV_PARANOIA_CHECK |
| 928 | { |
| 929 | int j; |
| 930 | for(j=0;j<RMDNUM;j++) |
| 931 | { |
| 932 | int i, num2; |
| 933 | for(i=RMDNUM-1;i>0;i--) { |
| 934 | num2 = (p->rmdnum + i) & (RMDNUM-1); |
| 935 | if(!(p->rmdhead[num2].u.s.status & RCV_OWN)) |
| 936 | break; |
| 937 | } |
| 938 | |
| 939 | if(i) { |
| 940 | int k, num1; |
| 941 | for(k=0;k<RMDNUM;k++) { |
| 942 | num1 = (p->rmdnum + k) & (RMDNUM-1); |
| 943 | if(!(p->rmdhead[num1].u.s.status & RCV_OWN)) |
| 944 | break; |
| 945 | } |
| 946 | if(!k) |
| 947 | break; |
| 948 | |
| 949 | if(debuglevel > 0) |
| 950 | { |
| 951 | char buf[256],*buf1; |
| 952 | buf1 = buf; |
| 953 | for(k=0;k<RMDNUM;k++) { |
| 954 | sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */ |
| 955 | buf1 += 3; |
| 956 | } |
| 957 | *buf1 = 0; |
| 958 | printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf); |
| 959 | } |
| 960 | |
| 961 | p->rmdnum = num1; |
| 962 | ni65_recv_intr(dev,csr0); |
| 963 | if((p->rmdhead[num2].u.s.status & RCV_OWN)) |
| 964 | break; /* ok, we are 'in sync' again */ |
| 965 | } |
| 966 | else |
| 967 | break; |
| 968 | } |
| 969 | } |
| 970 | #endif |
| 971 | |
| 972 | if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) { |
| 973 | printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); |
| 974 | ni65_stop_start(dev,p); |
| 975 | } |
| 976 | else |
| 977 | writedatareg(CSR0_INEA); |
| 978 | |
| 979 | spin_unlock(&p->ring_lock); |
| 980 | return IRQ_HANDLED; |
| 981 | } |
| 982 | |
| 983 | /* |
| 984 | * We have received an Xmit-Interrupt .. |
| 985 | * send a new packet if necessary |
| 986 | */ |
| 987 | static void ni65_xmit_intr(struct net_device *dev,int csr0) |
| 988 | { |
| 989 | struct priv *p = dev->ml_priv; |
| 990 | |
| 991 | while(p->xmit_queued) |
| 992 | { |
| 993 | struct tmd *tmdp = p->tmdhead + p->tmdlast; |
| 994 | int tmdstat = tmdp->u.s.status; |
| 995 | |
| 996 | if(tmdstat & XMIT_OWN) |
| 997 | break; |
| 998 | |
| 999 | if(tmdstat & XMIT_ERR) |
| 1000 | { |
| 1001 | #if 0 |
| 1002 | if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3) |
| 1003 | printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name); |
| 1004 | #endif |
| 1005 | /* checking some errors */ |
| 1006 | if(tmdp->status2 & XMIT_RTRY) |
| 1007 | dev->stats.tx_aborted_errors++; |
| 1008 | if(tmdp->status2 & XMIT_LCAR) |
| 1009 | dev->stats.tx_carrier_errors++; |
| 1010 | if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { |
| 1011 | /* this stops the xmitter */ |
| 1012 | dev->stats.tx_fifo_errors++; |
| 1013 | if(debuglevel > 0) |
| 1014 | printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name); |
| 1015 | if(p->features & INIT_RING_BEFORE_START) { |
| 1016 | tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */ |
| 1017 | ni65_stop_start(dev,p); |
| 1018 | break; /* no more Xmit processing .. */ |
| 1019 | } |
| 1020 | else |
| 1021 | ni65_stop_start(dev,p); |
| 1022 | } |
| 1023 | if(debuglevel > 2) |
| 1024 | printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2); |
| 1025 | if(!(csr0 & CSR0_BABL)) /* don't count errors twice */ |
| 1026 | dev->stats.tx_errors++; |
| 1027 | tmdp->status2 = 0; |
| 1028 | } |
| 1029 | else { |
| 1030 | dev->stats.tx_bytes -= (short)(tmdp->blen); |
| 1031 | dev->stats.tx_packets++; |
| 1032 | } |
| 1033 | |
| 1034 | #ifdef XMT_VIA_SKB |
| 1035 | if(p->tmd_skb[p->tmdlast]) { |
| 1036 | dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]); |
| 1037 | p->tmd_skb[p->tmdlast] = NULL; |
| 1038 | } |
| 1039 | #endif |
| 1040 | |
| 1041 | p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); |
| 1042 | if(p->tmdlast == p->tmdnum) |
| 1043 | p->xmit_queued = 0; |
| 1044 | } |
| 1045 | netif_wake_queue(dev); |
| 1046 | } |
| 1047 | |
| 1048 | /* |
| 1049 | * We have received a packet |
| 1050 | */ |
| 1051 | static void ni65_recv_intr(struct net_device *dev,int csr0) |
| 1052 | { |
| 1053 | struct rmd *rmdp; |
| 1054 | int rmdstat,len; |
| 1055 | int cnt=0; |
| 1056 | struct priv *p = dev->ml_priv; |
| 1057 | |
| 1058 | rmdp = p->rmdhead + p->rmdnum; |
| 1059 | while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) |
| 1060 | { |
| 1061 | cnt++; |
| 1062 | if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */ |
| 1063 | { |
| 1064 | if(!(rmdstat & RCV_ERR)) { |
| 1065 | if(rmdstat & RCV_START) |
| 1066 | { |
| 1067 | dev->stats.rx_length_errors++; |
| 1068 | printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff); |
| 1069 | } |
| 1070 | } |
| 1071 | else { |
| 1072 | if(debuglevel > 2) |
| 1073 | printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", |
| 1074 | dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) ); |
| 1075 | if(rmdstat & RCV_FRAM) |
| 1076 | dev->stats.rx_frame_errors++; |
| 1077 | if(rmdstat & RCV_OFLO) |
| 1078 | dev->stats.rx_over_errors++; |
| 1079 | if(rmdstat & RCV_CRC) |
| 1080 | dev->stats.rx_crc_errors++; |
| 1081 | if(rmdstat & RCV_BUF_ERR) |
| 1082 | dev->stats.rx_fifo_errors++; |
| 1083 | } |
| 1084 | if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ |
| 1085 | dev->stats.rx_errors++; |
| 1086 | } |
| 1087 | else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60) |
| 1088 | { |
| 1089 | #ifdef RCV_VIA_SKB |
| 1090 | struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC); |
| 1091 | if (skb) |
| 1092 | skb_reserve(skb,16); |
| 1093 | #else |
| 1094 | struct sk_buff *skb = dev_alloc_skb(len+2); |
| 1095 | #endif |
| 1096 | if(skb) |
| 1097 | { |
| 1098 | skb_reserve(skb,2); |
| 1099 | #ifdef RCV_VIA_SKB |
| 1100 | if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { |
| 1101 | skb_put(skb,len); |
| 1102 | skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); |
| 1103 | } |
| 1104 | else { |
| 1105 | struct sk_buff *skb1 = p->recv_skb[p->rmdnum]; |
| 1106 | skb_put(skb,R_BUF_SIZE); |
| 1107 | p->recv_skb[p->rmdnum] = skb; |
| 1108 | rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); |
| 1109 | skb = skb1; |
| 1110 | skb_trim(skb,len); |
| 1111 | } |
| 1112 | #else |
| 1113 | skb_put(skb,len); |
| 1114 | skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); |
| 1115 | #endif |
| 1116 | dev->stats.rx_packets++; |
| 1117 | dev->stats.rx_bytes += len; |
| 1118 | skb->protocol=eth_type_trans(skb,dev); |
| 1119 | netif_rx(skb); |
| 1120 | } |
| 1121 | else |
| 1122 | { |
| 1123 | printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); |
| 1124 | dev->stats.rx_dropped++; |
| 1125 | } |
| 1126 | } |
| 1127 | else { |
| 1128 | printk(KERN_INFO "%s: received runt packet\n",dev->name); |
| 1129 | dev->stats.rx_errors++; |
| 1130 | } |
| 1131 | rmdp->blen = -(R_BUF_SIZE-8); |
| 1132 | rmdp->mlen = 0; |
| 1133 | rmdp->u.s.status = RCV_OWN; /* change owner */ |
| 1134 | p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1); |
| 1135 | rmdp = p->rmdhead + p->rmdnum; |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | /* |
| 1140 | * kick xmitter .. |
| 1141 | */ |
| 1142 | |
| 1143 | static void ni65_timeout(struct net_device *dev) |
| 1144 | { |
| 1145 | int i; |
| 1146 | struct priv *p = dev->ml_priv; |
| 1147 | |
| 1148 | printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); |
| 1149 | for(i=0;i<TMDNUM;i++) |
| 1150 | printk("%02x ",p->tmdhead[i].u.s.status); |
| 1151 | printk("\n"); |
| 1152 | ni65_lance_reinit(dev); |
| 1153 | dev->trans_start = jiffies; |
| 1154 | netif_wake_queue(dev); |
| 1155 | } |
| 1156 | |
| 1157 | /* |
| 1158 | * Send a packet |
| 1159 | */ |
| 1160 | |
| 1161 | static netdev_tx_t ni65_send_packet(struct sk_buff *skb, |
| 1162 | struct net_device *dev) |
| 1163 | { |
| 1164 | struct priv *p = dev->ml_priv; |
| 1165 | |
| 1166 | netif_stop_queue(dev); |
| 1167 | |
| 1168 | if (test_and_set_bit(0, (void*)&p->lock)) { |
| 1169 | printk(KERN_ERR "%s: Queue was locked.\n", dev->name); |
| 1170 | return NETDEV_TX_BUSY; |
| 1171 | } |
| 1172 | |
| 1173 | { |
| 1174 | short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; |
| 1175 | struct tmd *tmdp; |
| 1176 | unsigned long flags; |
| 1177 | |
| 1178 | #ifdef XMT_VIA_SKB |
| 1179 | if( (unsigned long) (skb->data + skb->len) > 0x1000000) { |
| 1180 | #endif |
| 1181 | |
| 1182 | skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], |
| 1183 | skb->len > T_BUF_SIZE ? T_BUF_SIZE : |
| 1184 | skb->len); |
| 1185 | if (len > skb->len) |
| 1186 | memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); |
| 1187 | dev_kfree_skb (skb); |
| 1188 | |
| 1189 | spin_lock_irqsave(&p->ring_lock, flags); |
| 1190 | tmdp = p->tmdhead + p->tmdnum; |
| 1191 | tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); |
| 1192 | p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); |
| 1193 | |
| 1194 | #ifdef XMT_VIA_SKB |
| 1195 | } |
| 1196 | else { |
| 1197 | spin_lock_irqsave(&p->ring_lock, flags); |
| 1198 | |
| 1199 | tmdp = p->tmdhead + p->tmdnum; |
| 1200 | tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); |
| 1201 | p->tmd_skb[p->tmdnum] = skb; |
| 1202 | } |
| 1203 | #endif |
| 1204 | tmdp->blen = -len; |
| 1205 | |
| 1206 | tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; |
| 1207 | writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ |
| 1208 | |
| 1209 | p->xmit_queued = 1; |
| 1210 | p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); |
| 1211 | |
| 1212 | if(p->tmdnum != p->tmdlast) |
| 1213 | netif_wake_queue(dev); |
| 1214 | |
| 1215 | p->lock = 0; |
| 1216 | dev->trans_start = jiffies; |
| 1217 | |
| 1218 | spin_unlock_irqrestore(&p->ring_lock, flags); |
| 1219 | } |
| 1220 | |
| 1221 | return NETDEV_TX_OK; |
| 1222 | } |
| 1223 | |
| 1224 | static void set_multicast_list(struct net_device *dev) |
| 1225 | { |
| 1226 | if(!ni65_lance_reinit(dev)) |
| 1227 | printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); |
| 1228 | netif_wake_queue(dev); |
| 1229 | } |
| 1230 | |
| 1231 | #ifdef MODULE |
| 1232 | static struct net_device *dev_ni65; |
| 1233 | |
| 1234 | module_param(irq, int, 0); |
| 1235 | module_param(io, int, 0); |
| 1236 | module_param(dma, int, 0); |
| 1237 | MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)"); |
| 1238 | MODULE_PARM_DESC(io, "ni6510 I/O base address"); |
| 1239 | MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)"); |
| 1240 | |
| 1241 | int __init init_module(void) |
| 1242 | { |
| 1243 | dev_ni65 = ni65_probe(-1); |
| 1244 | return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0; |
| 1245 | } |
| 1246 | |
| 1247 | void __exit cleanup_module(void) |
| 1248 | { |
| 1249 | unregister_netdev(dev_ni65); |
| 1250 | cleanup_card(dev_ni65); |
| 1251 | free_netdev(dev_ni65); |
| 1252 | } |
| 1253 | #endif /* MODULE */ |
| 1254 | |
| 1255 | MODULE_LICENSE("GPL"); |