Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * net-3-driver for the NI5210 card (i82586 Ethernet chip) |
| 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 | * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later) |
| 8 | * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de) |
| 9 | * [feel free to mail ....] |
| 10 | * |
| 11 | * when using as module: (no autoprobing!) |
| 12 | * compile with: |
| 13 | * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c |
| 14 | * run with e.g: |
| 15 | * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000 |
| 16 | * |
| 17 | * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!. |
| 18 | * |
| 19 | * If you find a bug, please report me: |
| 20 | * The kernel panic output and any kmsg from the ni52 driver |
| 21 | * the ni5210-driver-version and the linux-kernel version |
| 22 | * how many shared memory (memsize) on the netcard, |
| 23 | * bootprom: yes/no, base_addr, mem_start |
| 24 | * maybe the ni5210-card revision and the i82586 version |
| 25 | * |
| 26 | * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340 |
| 27 | * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000, |
| 28 | * 0xd8000,0xcc000,0xce000,0xda000,0xdc000 |
| 29 | * |
| 30 | * sources: |
| 31 | * skeleton.c from Donald Becker |
| 32 | * |
| 33 | * I have also done a look in the following sources: (mail me if you need them) |
| 34 | * crynwr-packet-driver by Russ Nelson |
| 35 | * Garret A. Wollman's (fourth) i82586-driver for BSD |
| 36 | * (before getting an i82596 (yes 596 not 586) manual, the existing drivers helped |
| 37 | * me a lot to understand this tricky chip.) |
| 38 | * |
| 39 | * Known Problems: |
| 40 | * The internal sysbus seems to be slow. So we often lose packets because of |
| 41 | * overruns while receiving from a fast remote host. |
| 42 | * This can slow down TCP connections. Maybe the newer ni5210 cards are better. |
| 43 | * my experience is, that if a machine sends with more than about 500-600K/s |
| 44 | * the fifo/sysbus overflows. |
| 45 | * |
| 46 | * IMPORTANT NOTE: |
| 47 | * On fast networks, it's a (very) good idea to have 16K shared memory. With |
| 48 | * 8K, we can store only 4 receive frames, so it can (easily) happen that a remote |
| 49 | * machine 'overruns' our system. |
| 50 | * |
| 51 | * Known i82586/card problems (I'm sure, there are many more!): |
| 52 | * Running the NOP-mode, the i82586 sometimes seems to forget to report |
| 53 | * every xmit-interrupt until we restart the CU. |
| 54 | * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit |
| 55 | * in the RBD-Struct which indicates an end of the RBD queue. |
| 56 | * Instead, the RU fetches another (randomly selected and |
| 57 | * usually used) RBD and begins to fill it. (Maybe, this happens only if |
| 58 | * the last buffer from the previous RFD fits exact into the queue and |
| 59 | * the next RFD can't fetch an initial RBD. Anyone knows more? ) |
| 60 | * |
| 61 | * results from ftp performance tests with Linux 1.2.5 |
| 62 | * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s) |
| 63 | * sending in NOP-mode: peak performance up to 530K/s (but better don't run this mode) |
| 64 | */ |
| 65 | |
| 66 | /* |
| 67 | * 29.Sept.96: virt_to_bus changes for new memory scheme |
| 68 | * 19.Feb.96: more Mcast changes, module support (MH) |
| 69 | * |
| 70 | * 18.Nov.95: Mcast changes (AC). |
| 71 | * |
| 72 | * 23.April.95: fixed(?) receiving problems by configuring a RFD more |
| 73 | * than the number of RBD's. Can maybe cause other problems. |
| 74 | * 18.April.95: Added MODULE support (MH) |
| 75 | * 17.April.95: MC related changes in init586() and set_multicast_list(). |
| 76 | * removed use of 'jiffies' in init586() (MH) |
| 77 | * |
| 78 | * 19.Sep.94: Added Multicast support (not tested yet) (MH) |
| 79 | * |
| 80 | * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling. |
| 81 | * Now, every RFD has exact one RBD. (MH) |
| 82 | * |
| 83 | * 14.Sep.94: added promiscuous mode, a few cleanups (MH) |
| 84 | * |
| 85 | * 19.Aug.94: changed request_irq() parameter (MH) |
| 86 | * |
| 87 | * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH) |
| 88 | * |
| 89 | * 19.July.94: lotsa cleanups .. (MH) |
| 90 | * |
| 91 | * 17.July.94: some patches ... verified to run with 1.1.29 (MH) |
| 92 | * |
| 93 | * 4.July.94: patches for Linux 1.1.24 (MH) |
| 94 | * |
| 95 | * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH) |
| 96 | * |
| 97 | * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, too (MH) |
| 98 | * |
| 99 | * < 30.Sep.93: first versions |
| 100 | */ |
| 101 | |
| 102 | static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ |
| 103 | static int automatic_resume; /* experimental .. better should be zero */ |
| 104 | static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ |
| 105 | static int fifo=0x8; /* don't change */ |
| 106 | |
| 107 | /* #define REALLY_SLOW_IO */ |
| 108 | |
| 109 | #include <linux/module.h> |
| 110 | #include <linux/kernel.h> |
| 111 | #include <linux/string.h> |
| 112 | #include <linux/errno.h> |
| 113 | #include <linux/ioport.h> |
| 114 | #include <linux/slab.h> |
| 115 | #include <linux/interrupt.h> |
| 116 | #include <linux/delay.h> |
| 117 | #include <linux/init.h> |
| 118 | #include <linux/bitops.h> |
| 119 | #include <asm/io.h> |
| 120 | |
| 121 | #include <linux/netdevice.h> |
| 122 | #include <linux/etherdevice.h> |
| 123 | #include <linux/skbuff.h> |
| 124 | |
| 125 | #include "ni52.h" |
| 126 | |
| 127 | #define DRV_NAME "ni52" |
| 128 | |
| 129 | #define DEBUG /* debug on */ |
| 130 | #define SYSBUSVAL 1 /* 8 Bit */ |
| 131 | |
| 132 | #define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);} |
| 133 | #define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);} |
| 134 | #define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);} |
| 135 | #define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);} |
| 136 | |
| 137 | #define make32(ptr16) (p->memtop + (short) (ptr16) ) |
| 138 | #define make24(ptr32) ( ((char *) (ptr32)) - p->base) |
| 139 | #define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )) |
| 140 | |
| 141 | /******************* how to calculate the buffers ***************************** |
| 142 | |
| 143 | * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works |
| 144 | * --------------- in a different (more stable?) mode. Only in this mode it's |
| 145 | * possible to configure the driver with 'NO_NOPCOMMANDS' |
| 146 | |
| 147 | sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; |
| 148 | sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT |
| 149 | sizeof(rfd) = 24; sizeof(rbd) = 12; |
| 150 | sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; |
| 151 | sizeof(nop_cmd) = 8; |
| 152 | |
| 153 | * if you don't know the driver, better do not change these values: */ |
| 154 | |
| 155 | #define RECV_BUFF_SIZE 1524 /* slightly oversized */ |
| 156 | #define XMIT_BUFF_SIZE 1524 /* slightly oversized */ |
| 157 | #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */ |
| 158 | #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */ |
| 159 | #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */ |
| 160 | #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ |
| 161 | |
| 162 | /**************************************************************************/ |
| 163 | |
| 164 | /* different DELAYs */ |
| 165 | #define DELAY(x) mdelay(32 * x); |
| 166 | #define DELAY_16(); { udelay(16); } |
| 167 | #define DELAY_18(); { udelay(4); } |
| 168 | |
| 169 | /* wait for command with timeout: */ |
| 170 | #define WAIT_4_SCB_CMD() \ |
| 171 | { int i; \ |
| 172 | for(i=0;i<16384;i++) { \ |
| 173 | if(!p->scb->cmd_cuc) break; \ |
| 174 | DELAY_18(); \ |
| 175 | if(i == 16383) { \ |
| 176 | printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \ |
| 177 | if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } } |
| 178 | |
| 179 | #define WAIT_4_SCB_CMD_RUC() { int i; \ |
| 180 | for(i=0;i<16384;i++) { \ |
| 181 | if(!p->scb->cmd_ruc) break; \ |
| 182 | DELAY_18(); \ |
| 183 | if(i == 16383) { \ |
| 184 | printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \ |
| 185 | if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } } |
| 186 | |
| 187 | #define WAIT_4_STAT_COMPL(addr) { int i; \ |
| 188 | for(i=0;i<32767;i++) { \ |
| 189 | if((addr)->cmd_status & STAT_COMPL) break; \ |
| 190 | DELAY_16(); DELAY_16(); } } |
| 191 | |
| 192 | #define NI52_TOTAL_SIZE 16 |
| 193 | #define NI52_ADDR0 0x02 |
| 194 | #define NI52_ADDR1 0x07 |
| 195 | #define NI52_ADDR2 0x01 |
| 196 | |
| 197 | static int ni52_probe1(struct net_device *dev,int ioaddr); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 198 | static irqreturn_t ni52_interrupt(int irq,void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | static int ni52_open(struct net_device *dev); |
| 200 | static int ni52_close(struct net_device *dev); |
| 201 | static int ni52_send_packet(struct sk_buff *,struct net_device *); |
| 202 | static struct net_device_stats *ni52_get_stats(struct net_device *dev); |
| 203 | static void set_multicast_list(struct net_device *dev); |
| 204 | static void ni52_timeout(struct net_device *dev); |
| 205 | #if 0 |
| 206 | static void ni52_dump(struct net_device *,void *); |
| 207 | #endif |
| 208 | |
| 209 | /* helper-functions */ |
| 210 | static int init586(struct net_device *dev); |
| 211 | static int check586(struct net_device *dev,char *where,unsigned size); |
| 212 | static void alloc586(struct net_device *dev); |
| 213 | static void startrecv586(struct net_device *dev); |
| 214 | static void *alloc_rfa(struct net_device *dev,void *ptr); |
| 215 | static void ni52_rcv_int(struct net_device *dev); |
| 216 | static void ni52_xmt_int(struct net_device *dev); |
| 217 | static void ni52_rnr_int(struct net_device *dev); |
| 218 | |
| 219 | struct priv |
| 220 | { |
| 221 | struct net_device_stats stats; |
| 222 | unsigned long base; |
| 223 | char *memtop; |
| 224 | long int lock; |
| 225 | int reseted; |
| 226 | volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first; |
| 227 | volatile struct scp_struct *scp; /* volatile is important */ |
| 228 | volatile struct iscp_struct *iscp; /* volatile is important */ |
| 229 | volatile struct scb_struct *scb; /* volatile is important */ |
| 230 | volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS]; |
| 231 | #if (NUM_XMIT_BUFFS == 1) |
| 232 | volatile struct transmit_cmd_struct *xmit_cmds[2]; |
| 233 | volatile struct nop_cmd_struct *nop_cmds[2]; |
| 234 | #else |
| 235 | volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS]; |
| 236 | volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS]; |
| 237 | #endif |
| 238 | volatile int nop_point,num_recv_buffs; |
| 239 | volatile char *xmit_cbuffs[NUM_XMIT_BUFFS]; |
| 240 | volatile int xmit_count,xmit_last; |
| 241 | }; |
| 242 | |
| 243 | /********************************************** |
| 244 | * close device |
| 245 | */ |
| 246 | static int ni52_close(struct net_device *dev) |
| 247 | { |
| 248 | free_irq(dev->irq, dev); |
| 249 | |
| 250 | ni_reset586(); /* the hard way to stop the receiver */ |
| 251 | |
| 252 | netif_stop_queue(dev); |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | /********************************************** |
| 258 | * open device |
| 259 | */ |
| 260 | static int ni52_open(struct net_device *dev) |
| 261 | { |
| 262 | int ret; |
| 263 | |
| 264 | ni_disint(); |
| 265 | alloc586(dev); |
| 266 | init586(dev); |
| 267 | startrecv586(dev); |
| 268 | ni_enaint(); |
| 269 | |
| 270 | ret = request_irq(dev->irq, &ni52_interrupt,0,dev->name,dev); |
| 271 | if (ret) |
| 272 | { |
| 273 | ni_reset586(); |
| 274 | return ret; |
| 275 | } |
| 276 | |
| 277 | netif_start_queue(dev); |
| 278 | |
| 279 | return 0; /* most done by init */ |
| 280 | } |
| 281 | |
| 282 | /********************************************** |
| 283 | * Check to see if there's an 82586 out there. |
| 284 | */ |
| 285 | static int check586(struct net_device *dev,char *where,unsigned size) |
| 286 | { |
| 287 | struct priv pb; |
| 288 | struct priv *p = /* (struct priv *) dev->priv*/ &pb; |
| 289 | char *iscp_addrs[2]; |
| 290 | int i; |
| 291 | |
| 292 | p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000; |
| 293 | p->memtop = isa_bus_to_virt((unsigned long)where) + size; |
| 294 | p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS); |
| 295 | memset((char *)p->scp,0, sizeof(struct scp_struct)); |
| 296 | for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */ |
| 297 | if(((char *)p->scp)[i]) |
| 298 | return 0; |
| 299 | p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */ |
| 300 | if(p->scp->sysbus != SYSBUSVAL) |
| 301 | return 0; |
| 302 | |
| 303 | iscp_addrs[0] = isa_bus_to_virt((unsigned long)where); |
| 304 | iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct); |
| 305 | |
| 306 | for(i=0;i<2;i++) |
| 307 | { |
| 308 | p->iscp = (struct iscp_struct *) iscp_addrs[i]; |
| 309 | memset((char *)p->iscp,0, sizeof(struct iscp_struct)); |
| 310 | |
| 311 | p->scp->iscp = make24(p->iscp); |
| 312 | p->iscp->busy = 1; |
| 313 | |
| 314 | ni_reset586(); |
| 315 | ni_attn586(); |
| 316 | DELAY(1); /* wait a while... */ |
| 317 | |
| 318 | if(p->iscp->busy) /* i82586 clears 'busy' after successful init */ |
| 319 | return 0; |
| 320 | } |
| 321 | return 1; |
| 322 | } |
| 323 | |
| 324 | /****************************************************************** |
| 325 | * set iscp at the right place, called by ni52_probe1 and open586. |
| 326 | */ |
| 327 | static void alloc586(struct net_device *dev) |
| 328 | { |
| 329 | struct priv *p = (struct priv *) dev->priv; |
| 330 | |
| 331 | ni_reset586(); |
| 332 | DELAY(1); |
| 333 | |
| 334 | p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS); |
| 335 | p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start); |
| 336 | p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct)); |
| 337 | |
| 338 | memset((char *) p->iscp,0,sizeof(struct iscp_struct)); |
| 339 | memset((char *) p->scp ,0,sizeof(struct scp_struct)); |
| 340 | |
| 341 | p->scp->iscp = make24(p->iscp); |
| 342 | p->scp->sysbus = SYSBUSVAL; |
| 343 | p->iscp->scb_offset = make16(p->scb); |
| 344 | |
| 345 | p->iscp->busy = 1; |
| 346 | ni_reset586(); |
| 347 | ni_attn586(); |
| 348 | |
| 349 | DELAY(1); |
| 350 | |
| 351 | if(p->iscp->busy) |
| 352 | printk("%s: Init-Problems (alloc).\n",dev->name); |
| 353 | |
| 354 | p->reseted = 0; |
| 355 | |
| 356 | memset((char *)p->scb,0,sizeof(struct scb_struct)); |
| 357 | } |
| 358 | |
| 359 | /* set: io,irq,memstart,memend or set it when calling insmod */ |
| 360 | static int irq=9; |
| 361 | static int io=0x300; |
| 362 | static long memstart; /* e.g 0xd0000 */ |
| 363 | static long memend; /* e.g 0xd4000 */ |
| 364 | |
| 365 | /********************************************** |
| 366 | * probe the ni5210-card |
| 367 | */ |
| 368 | struct net_device * __init ni52_probe(int unit) |
| 369 | { |
| 370 | struct net_device *dev = alloc_etherdev(sizeof(struct priv)); |
| 371 | static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; |
| 372 | int *port; |
| 373 | int err = 0; |
| 374 | |
| 375 | if (!dev) |
| 376 | return ERR_PTR(-ENOMEM); |
| 377 | |
| 378 | if (unit >= 0) { |
| 379 | sprintf(dev->name, "eth%d", unit); |
| 380 | netdev_boot_setup_check(dev); |
| 381 | io = dev->base_addr; |
| 382 | irq = dev->irq; |
| 383 | memstart = dev->mem_start; |
| 384 | memend = dev->mem_end; |
| 385 | } |
| 386 | |
| 387 | SET_MODULE_OWNER(dev); |
| 388 | |
| 389 | if (io > 0x1ff) { /* Check a single specified location. */ |
| 390 | err = ni52_probe1(dev, io); |
| 391 | } else if (io > 0) { /* Don't probe at all. */ |
| 392 | err = -ENXIO; |
| 393 | } else { |
| 394 | for (port = ports; *port && ni52_probe1(dev, *port) ; port++) |
| 395 | ; |
| 396 | if (*port) |
| 397 | goto got_it; |
| 398 | #ifdef FULL_IO_PROBE |
| 399 | for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) |
| 400 | ; |
| 401 | if (io < 0x400) |
| 402 | goto got_it; |
| 403 | #endif |
| 404 | err = -ENODEV; |
| 405 | } |
| 406 | if (err) |
| 407 | goto out; |
| 408 | got_it: |
| 409 | err = register_netdev(dev); |
| 410 | if (err) |
| 411 | goto out1; |
| 412 | return dev; |
| 413 | out1: |
| 414 | release_region(dev->base_addr, NI52_TOTAL_SIZE); |
| 415 | out: |
| 416 | free_netdev(dev); |
| 417 | return ERR_PTR(err); |
| 418 | } |
| 419 | |
| 420 | static int __init ni52_probe1(struct net_device *dev,int ioaddr) |
| 421 | { |
| 422 | int i, size, retval; |
| 423 | |
| 424 | dev->base_addr = ioaddr; |
| 425 | dev->irq = irq; |
| 426 | dev->mem_start = memstart; |
| 427 | dev->mem_end = memend; |
| 428 | |
| 429 | if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) |
| 430 | return -EBUSY; |
| 431 | |
| 432 | if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || |
| 433 | !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { |
| 434 | retval = -ENODEV; |
| 435 | goto out; |
| 436 | } |
| 437 | |
| 438 | for(i=0;i<ETH_ALEN;i++) |
| 439 | dev->dev_addr[i] = inb(dev->base_addr+i); |
| 440 | |
| 441 | if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 |
| 442 | || dev->dev_addr[2] != NI52_ADDR2) { |
| 443 | retval = -ENODEV; |
| 444 | goto out; |
| 445 | } |
| 446 | |
| 447 | printk(KERN_INFO "%s: NI5210 found at %#3lx, ",dev->name,dev->base_addr); |
| 448 | |
| 449 | /* |
| 450 | * check (or search) IO-Memory, 8K and 16K |
| 451 | */ |
| 452 | #ifdef MODULE |
| 453 | size = dev->mem_end - dev->mem_start; |
| 454 | if(size != 0x2000 && size != 0x4000) { |
| 455 | printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size); |
| 456 | retval = -ENODEV; |
| 457 | goto out; |
| 458 | } |
| 459 | if(!check586(dev,(char *) dev->mem_start,size)) { |
| 460 | printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size); |
| 461 | retval = -ENODEV; |
| 462 | goto out; |
| 463 | } |
| 464 | #else |
| 465 | if(dev->mem_start != 0) /* no auto-mem-probe */ |
| 466 | { |
| 467 | size = 0x4000; /* check for 16K mem */ |
| 468 | if(!check586(dev,(char *) dev->mem_start,size)) { |
| 469 | size = 0x2000; /* check for 8K mem */ |
| 470 | if(!check586(dev,(char *) dev->mem_start,size)) { |
| 471 | printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start); |
| 472 | retval = -ENODEV; |
| 473 | goto out; |
| 474 | } |
| 475 | } |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000, |
| 480 | 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 }; |
| 481 | for(i=0;;i++) |
| 482 | { |
| 483 | if(!memaddrs[i]) { |
| 484 | printk("?memprobe, Can't find io-memory!\n"); |
| 485 | retval = -ENODEV; |
| 486 | goto out; |
| 487 | } |
| 488 | dev->mem_start = memaddrs[i]; |
| 489 | size = 0x2000; /* check for 8K mem */ |
| 490 | if(check586(dev,(char *)dev->mem_start,size)) /* 8K-check */ |
| 491 | break; |
| 492 | size = 0x4000; /* check for 16K mem */ |
| 493 | if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */ |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */ |
| 498 | #endif |
| 499 | |
| 500 | memset((char *) dev->priv,0,sizeof(struct priv)); |
| 501 | |
| 502 | ((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size; |
| 503 | ((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000; |
| 504 | alloc586(dev); |
| 505 | |
| 506 | /* set number of receive-buffs according to memsize */ |
| 507 | if(size == 0x2000) |
| 508 | ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8; |
| 509 | else |
| 510 | ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16; |
| 511 | |
| 512 | printk("Memaddr: 0x%lx, Memsize: %d, ",dev->mem_start,size); |
| 513 | |
| 514 | if(dev->irq < 2) |
| 515 | { |
| 516 | unsigned long irq_mask; |
| 517 | |
| 518 | irq_mask = probe_irq_on(); |
| 519 | ni_reset586(); |
| 520 | ni_attn586(); |
| 521 | |
| 522 | mdelay(20); |
| 523 | dev->irq = probe_irq_off(irq_mask); |
| 524 | if(!dev->irq) |
| 525 | { |
| 526 | printk("?autoirq, Failed to detect IRQ line!\n"); |
| 527 | retval = -EAGAIN; |
| 528 | goto out; |
| 529 | } |
| 530 | printk("IRQ %d (autodetected).\n",dev->irq); |
| 531 | } |
| 532 | else { |
| 533 | if(dev->irq == 2) |
| 534 | dev->irq = 9; |
| 535 | printk("IRQ %d (assigned and not checked!).\n",dev->irq); |
| 536 | } |
| 537 | |
| 538 | dev->open = ni52_open; |
| 539 | dev->stop = ni52_close; |
| 540 | dev->get_stats = ni52_get_stats; |
| 541 | dev->tx_timeout = ni52_timeout; |
| 542 | dev->watchdog_timeo = HZ/20; |
| 543 | dev->hard_start_xmit = ni52_send_packet; |
| 544 | dev->set_multicast_list = set_multicast_list; |
| 545 | |
| 546 | dev->if_port = 0; |
| 547 | |
| 548 | return 0; |
| 549 | out: |
| 550 | release_region(ioaddr, NI52_TOTAL_SIZE); |
| 551 | return retval; |
| 552 | } |
| 553 | |
| 554 | /********************************************** |
| 555 | * init the chip (ni52-interrupt should be disabled?!) |
| 556 | * needs a correct 'allocated' memory |
| 557 | */ |
| 558 | |
| 559 | static int init586(struct net_device *dev) |
| 560 | { |
| 561 | void *ptr; |
| 562 | int i,result=0; |
| 563 | struct priv *p = (struct priv *) dev->priv; |
| 564 | volatile struct configure_cmd_struct *cfg_cmd; |
| 565 | volatile struct iasetup_cmd_struct *ias_cmd; |
| 566 | volatile struct tdr_cmd_struct *tdr_cmd; |
| 567 | volatile struct mcsetup_cmd_struct *mc_cmd; |
| 568 | struct dev_mc_list *dmi=dev->mc_list; |
| 569 | int num_addrs=dev->mc_count; |
| 570 | |
| 571 | ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct)); |
| 572 | |
| 573 | cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */ |
| 574 | cfg_cmd->cmd_status = 0; |
| 575 | cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST; |
| 576 | cfg_cmd->cmd_link = 0xffff; |
| 577 | |
| 578 | cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */ |
| 579 | cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */ |
| 580 | cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */ |
| 581 | cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */ |
| 582 | cfg_cmd->priority = 0x00; |
| 583 | cfg_cmd->ifs = 0x60; |
| 584 | cfg_cmd->time_low = 0x00; |
| 585 | cfg_cmd->time_high = 0xf2; |
| 586 | cfg_cmd->promisc = 0; |
| 587 | if(dev->flags & IFF_ALLMULTI) { |
| 588 | int len = ((char *) p->iscp - (char *) ptr - 8) / 6; |
| 589 | if(num_addrs > len) { |
| 590 | printk("%s: switching to promisc. mode\n",dev->name); |
| 591 | dev->flags|=IFF_PROMISC; |
| 592 | } |
| 593 | } |
| 594 | if(dev->flags&IFF_PROMISC) |
| 595 | { |
| 596 | cfg_cmd->promisc=1; |
| 597 | dev->flags|=IFF_PROMISC; |
| 598 | } |
| 599 | cfg_cmd->carr_coll = 0x00; |
| 600 | |
| 601 | p->scb->cbl_offset = make16(cfg_cmd); |
| 602 | p->scb->cmd_ruc = 0; |
| 603 | |
| 604 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ |
| 605 | ni_attn586(); |
| 606 | |
| 607 | WAIT_4_STAT_COMPL(cfg_cmd); |
| 608 | |
| 609 | if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK)) |
| 610 | { |
| 611 | printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status); |
| 612 | return 1; |
| 613 | } |
| 614 | |
| 615 | /* |
| 616 | * individual address setup |
| 617 | */ |
| 618 | |
| 619 | ias_cmd = (struct iasetup_cmd_struct *)ptr; |
| 620 | |
| 621 | ias_cmd->cmd_status = 0; |
| 622 | ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST; |
| 623 | ias_cmd->cmd_link = 0xffff; |
| 624 | |
| 625 | memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN); |
| 626 | |
| 627 | p->scb->cbl_offset = make16(ias_cmd); |
| 628 | |
| 629 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ |
| 630 | ni_attn586(); |
| 631 | |
| 632 | WAIT_4_STAT_COMPL(ias_cmd); |
| 633 | |
| 634 | if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) { |
| 635 | printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status); |
| 636 | return 1; |
| 637 | } |
| 638 | |
| 639 | /* |
| 640 | * TDR, wire check .. e.g. no resistor e.t.c |
| 641 | */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | tdr_cmd = (struct tdr_cmd_struct *)ptr; |
| 644 | |
| 645 | tdr_cmd->cmd_status = 0; |
| 646 | tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST; |
| 647 | tdr_cmd->cmd_link = 0xffff; |
| 648 | tdr_cmd->status = 0; |
| 649 | |
| 650 | p->scb->cbl_offset = make16(tdr_cmd); |
| 651 | p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ |
| 652 | ni_attn586(); |
| 653 | |
| 654 | WAIT_4_STAT_COMPL(tdr_cmd); |
| 655 | |
| 656 | if(!(tdr_cmd->cmd_status & STAT_COMPL)) |
| 657 | { |
| 658 | printk("%s: Problems while running the TDR.\n",dev->name); |
| 659 | } |
| 660 | else |
| 661 | { |
| 662 | DELAY_16(); /* wait for result */ |
| 663 | result = tdr_cmd->status; |
| 664 | |
| 665 | p->scb->cmd_cuc = p->scb->cus & STAT_MASK; |
| 666 | ni_attn586(); /* ack the interrupts */ |
| 667 | |
| 668 | if(result & TDR_LNK_OK) |
| 669 | ; |
| 670 | else if(result & TDR_XCVR_PRB) |
| 671 | printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name); |
| 672 | else if(result & TDR_ET_OPN) |
| 673 | printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK); |
| 674 | else if(result & TDR_ET_SRT) |
| 675 | { |
| 676 | if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */ |
| 677 | printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK); |
| 678 | } |
| 679 | else |
| 680 | printk("%s: TDR: Unknown status %04x\n",dev->name,result); |
| 681 | } |
| 682 | |
| 683 | /* |
| 684 | * Multicast setup |
| 685 | */ |
| 686 | if(num_addrs && !(dev->flags & IFF_PROMISC) ) |
| 687 | { |
| 688 | mc_cmd = (struct mcsetup_cmd_struct *) ptr; |
| 689 | mc_cmd->cmd_status = 0; |
| 690 | mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST; |
| 691 | mc_cmd->cmd_link = 0xffff; |
| 692 | mc_cmd->mc_cnt = num_addrs * 6; |
| 693 | |
| 694 | for(i=0;i<num_addrs;i++,dmi=dmi->next) |
| 695 | memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6); |
| 696 | |
| 697 | p->scb->cbl_offset = make16(mc_cmd); |
| 698 | p->scb->cmd_cuc = CUC_START; |
| 699 | ni_attn586(); |
| 700 | |
| 701 | WAIT_4_STAT_COMPL(mc_cmd); |
| 702 | |
| 703 | if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) |
| 704 | printk("%s: Can't apply multicast-address-list.\n",dev->name); |
| 705 | } |
| 706 | |
| 707 | /* |
| 708 | * alloc nop/xmit-cmds |
| 709 | */ |
| 710 | #if (NUM_XMIT_BUFFS == 1) |
| 711 | for(i=0;i<2;i++) |
| 712 | { |
| 713 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; |
| 714 | p->nop_cmds[i]->cmd_cmd = CMD_NOP; |
| 715 | p->nop_cmds[i]->cmd_status = 0; |
| 716 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); |
| 717 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); |
| 718 | } |
| 719 | #else |
| 720 | for(i=0;i<NUM_XMIT_BUFFS;i++) |
| 721 | { |
| 722 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; |
| 723 | p->nop_cmds[i]->cmd_cmd = CMD_NOP; |
| 724 | p->nop_cmds[i]->cmd_status = 0; |
| 725 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); |
| 726 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); |
| 727 | } |
| 728 | #endif |
| 729 | |
| 730 | ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */ |
| 731 | |
| 732 | /* |
| 733 | * alloc xmit-buffs / init xmit_cmds |
| 734 | */ |
| 735 | for(i=0;i<NUM_XMIT_BUFFS;i++) |
| 736 | { |
| 737 | p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/ |
| 738 | ptr = (char *) ptr + sizeof(struct transmit_cmd_struct); |
| 739 | p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */ |
| 740 | ptr = (char *) ptr + XMIT_BUFF_SIZE; |
| 741 | p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */ |
| 742 | ptr = (char *) ptr + sizeof(struct tbd_struct); |
| 743 | if((void *)ptr > (void *)p->iscp) |
| 744 | { |
| 745 | printk("%s: not enough shared-mem for your configuration!\n",dev->name); |
| 746 | return 1; |
| 747 | } |
| 748 | memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct)); |
| 749 | memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct)); |
| 750 | p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]); |
| 751 | p->xmit_cmds[i]->cmd_status = STAT_COMPL; |
| 752 | p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT; |
| 753 | p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i])); |
| 754 | p->xmit_buffs[i]->next = 0xffff; |
| 755 | p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i])); |
| 756 | } |
| 757 | |
| 758 | p->xmit_count = 0; |
| 759 | p->xmit_last = 0; |
| 760 | #ifndef NO_NOPCOMMANDS |
| 761 | p->nop_point = 0; |
| 762 | #endif |
| 763 | |
| 764 | /* |
| 765 | * 'start transmitter' |
| 766 | */ |
| 767 | #ifndef NO_NOPCOMMANDS |
| 768 | p->scb->cbl_offset = make16(p->nop_cmds[0]); |
| 769 | p->scb->cmd_cuc = CUC_START; |
| 770 | ni_attn586(); |
| 771 | WAIT_4_SCB_CMD(); |
| 772 | #else |
| 773 | p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]); |
| 774 | p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT; |
| 775 | #endif |
| 776 | |
| 777 | /* |
| 778 | * ack. interrupts |
| 779 | */ |
| 780 | p->scb->cmd_cuc = p->scb->cus & STAT_MASK; |
| 781 | ni_attn586(); |
| 782 | DELAY_16(); |
| 783 | |
| 784 | ni_enaint(); |
| 785 | |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | /****************************************************** |
| 790 | * This is a helper routine for ni52_rnr_int() and init586(). |
| 791 | * It sets up the Receive Frame Area (RFA). |
| 792 | */ |
| 793 | |
| 794 | static void *alloc_rfa(struct net_device *dev,void *ptr) |
| 795 | { |
| 796 | volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr; |
| 797 | volatile struct rbd_struct *rbd; |
| 798 | int i; |
| 799 | struct priv *p = (struct priv *) dev->priv; |
| 800 | |
| 801 | memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd)); |
| 802 | p->rfd_first = rfd; |
| 803 | |
| 804 | for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) { |
| 805 | rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) ); |
| 806 | rfd[i].rbd_offset = 0xffff; |
| 807 | } |
| 808 | rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */ |
| 809 | |
| 810 | ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) ); |
| 811 | |
| 812 | rbd = (struct rbd_struct *) ptr; |
| 813 | ptr = (void *) (rbd + p->num_recv_buffs); |
| 814 | |
| 815 | /* clr descriptors */ |
| 816 | memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs)); |
| 817 | |
| 818 | for(i=0;i<p->num_recv_buffs;i++) |
| 819 | { |
| 820 | rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs)); |
| 821 | rbd[i].size = RECV_BUFF_SIZE; |
| 822 | rbd[i].buffer = make24(ptr); |
| 823 | ptr = (char *) ptr + RECV_BUFF_SIZE; |
| 824 | } |
| 825 | |
| 826 | p->rfd_top = p->rfd_first; |
| 827 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); |
| 828 | |
| 829 | p->scb->rfa_offset = make16(p->rfd_first); |
| 830 | p->rfd_first->rbd_offset = make16(rbd); |
| 831 | |
| 832 | return ptr; |
| 833 | } |
| 834 | |
| 835 | |
| 836 | /************************************************** |
| 837 | * Interrupt Handler ... |
| 838 | */ |
| 839 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 840 | static irqreturn_t ni52_interrupt(int irq,void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | { |
| 842 | struct net_device *dev = dev_id; |
| 843 | unsigned short stat; |
| 844 | int cnt=0; |
| 845 | struct priv *p; |
| 846 | |
| 847 | if (!dev) { |
| 848 | printk ("ni5210-interrupt: irq %d for unknown device.\n",irq); |
| 849 | return IRQ_NONE; |
| 850 | } |
| 851 | p = (struct priv *) dev->priv; |
| 852 | |
| 853 | if(debuglevel > 1) |
| 854 | printk("I"); |
| 855 | |
| 856 | WAIT_4_SCB_CMD(); /* wait for last command */ |
| 857 | |
| 858 | while((stat=p->scb->cus & STAT_MASK)) |
| 859 | { |
| 860 | p->scb->cmd_cuc = stat; |
| 861 | ni_attn586(); |
| 862 | |
| 863 | if(stat & STAT_FR) /* received a frame */ |
| 864 | ni52_rcv_int(dev); |
| 865 | |
| 866 | if(stat & STAT_RNR) /* RU went 'not ready' */ |
| 867 | { |
| 868 | printk("(R)"); |
| 869 | if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */ |
| 870 | { |
| 871 | WAIT_4_SCB_CMD(); |
| 872 | p->scb->cmd_ruc = RUC_RESUME; |
| 873 | ni_attn586(); |
| 874 | WAIT_4_SCB_CMD_RUC(); |
| 875 | } |
| 876 | else |
| 877 | { |
| 878 | printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus); |
| 879 | ni52_rnr_int(dev); |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | if(stat & STAT_CX) /* command with I-bit set complete */ |
| 884 | ni52_xmt_int(dev); |
| 885 | |
| 886 | #ifndef NO_NOPCOMMANDS |
| 887 | if(stat & STAT_CNA) /* CU went 'not ready' */ |
| 888 | { |
| 889 | if(netif_running(dev)) |
| 890 | printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus); |
| 891 | } |
| 892 | #endif |
| 893 | |
| 894 | if(debuglevel > 1) |
| 895 | printk("%d",cnt++); |
| 896 | |
| 897 | WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */ |
| 898 | if(p->scb->cmd_cuc) /* timed out? */ |
| 899 | { |
| 900 | printk("%s: Acknowledge timed out.\n",dev->name); |
| 901 | ni_disint(); |
| 902 | break; |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | if(debuglevel > 1) |
| 907 | printk("i"); |
| 908 | return IRQ_HANDLED; |
| 909 | } |
| 910 | |
| 911 | /******************************************************* |
| 912 | * receive-interrupt |
| 913 | */ |
| 914 | |
| 915 | static void ni52_rcv_int(struct net_device *dev) |
| 916 | { |
| 917 | int status,cnt=0; |
| 918 | unsigned short totlen; |
| 919 | struct sk_buff *skb; |
| 920 | struct rbd_struct *rbd; |
| 921 | struct priv *p = (struct priv *) dev->priv; |
| 922 | |
| 923 | if(debuglevel > 0) |
| 924 | printk("R"); |
| 925 | |
| 926 | for(;(status = p->rfd_top->stat_high) & RFD_COMPL;) |
| 927 | { |
| 928 | rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset); |
| 929 | |
| 930 | if(status & RFD_OK) /* frame received without error? */ |
| 931 | { |
| 932 | if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */ |
| 933 | { |
| 934 | totlen &= RBD_MASK; /* length of this frame */ |
| 935 | rbd->status = 0; |
| 936 | skb = (struct sk_buff *) dev_alloc_skb(totlen+2); |
| 937 | if(skb != NULL) |
| 938 | { |
| 939 | skb->dev = dev; |
| 940 | skb_reserve(skb,2); |
| 941 | skb_put(skb,totlen); |
| 942 | eth_copy_and_sum(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen,0); |
| 943 | skb->protocol=eth_type_trans(skb,dev); |
| 944 | netif_rx(skb); |
| 945 | dev->last_rx = jiffies; |
| 946 | p->stats.rx_packets++; |
| 947 | p->stats.rx_bytes += totlen; |
| 948 | } |
| 949 | else |
| 950 | p->stats.rx_dropped++; |
| 951 | } |
| 952 | else |
| 953 | { |
| 954 | int rstat; |
| 955 | /* free all RBD's until RBD_LAST is set */ |
| 956 | totlen = 0; |
| 957 | while(!((rstat=rbd->status) & RBD_LAST)) |
| 958 | { |
| 959 | totlen += rstat & RBD_MASK; |
| 960 | if(!rstat) |
| 961 | { |
| 962 | printk("%s: Whoops .. no end mark in RBD list\n",dev->name); |
| 963 | break; |
| 964 | } |
| 965 | rbd->status = 0; |
| 966 | rbd = (struct rbd_struct *) make32(rbd->next); |
| 967 | } |
| 968 | totlen += rstat & RBD_MASK; |
| 969 | rbd->status = 0; |
| 970 | printk("%s: received oversized frame! length: %d\n",dev->name,totlen); |
| 971 | p->stats.rx_dropped++; |
| 972 | } |
| 973 | } |
| 974 | else /* frame !(ok), only with 'save-bad-frames' */ |
| 975 | { |
| 976 | printk("%s: oops! rfd-error-status: %04x\n",dev->name,status); |
| 977 | p->stats.rx_errors++; |
| 978 | } |
| 979 | p->rfd_top->stat_high = 0; |
| 980 | p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */ |
| 981 | p->rfd_top->rbd_offset = 0xffff; |
| 982 | p->rfd_last->last = 0; /* delete RFD_SUSP */ |
| 983 | p->rfd_last = p->rfd_top; |
| 984 | p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */ |
| 985 | p->scb->rfa_offset = make16(p->rfd_top); |
| 986 | |
| 987 | if(debuglevel > 0) |
| 988 | printk("%d",cnt++); |
| 989 | } |
| 990 | |
| 991 | if(automatic_resume) |
| 992 | { |
| 993 | WAIT_4_SCB_CMD(); |
| 994 | p->scb->cmd_ruc = RUC_RESUME; |
| 995 | ni_attn586(); |
| 996 | WAIT_4_SCB_CMD_RUC(); |
| 997 | } |
| 998 | |
| 999 | #ifdef WAIT_4_BUSY |
| 1000 | { |
| 1001 | int i; |
| 1002 | for(i=0;i<1024;i++) |
| 1003 | { |
| 1004 | if(p->rfd_top->status) |
| 1005 | break; |
| 1006 | DELAY_16(); |
| 1007 | if(i == 1023) |
| 1008 | printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name); |
| 1009 | } |
| 1010 | } |
| 1011 | #endif |
| 1012 | |
| 1013 | #if 0 |
| 1014 | if(!at_least_one) |
| 1015 | { |
| 1016 | int i; |
| 1017 | volatile struct rfd_struct *rfds=p->rfd_top; |
| 1018 | volatile struct rbd_struct *rbds; |
| 1019 | printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least); |
| 1020 | for(i=0;i< (p->num_recv_buffs+4);i++) |
| 1021 | { |
| 1022 | rbds = (struct rbd_struct *) make32(rfds->rbd_offset); |
| 1023 | printk("%04x:%04x ",rfds->status,rbds->status); |
| 1024 | rfds = (struct rfd_struct *) make32(rfds->next); |
| 1025 | } |
| 1026 | printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status); |
| 1027 | printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus); |
| 1028 | } |
| 1029 | old_at_least = at_least_one; |
| 1030 | #endif |
| 1031 | |
| 1032 | if(debuglevel > 0) |
| 1033 | printk("r"); |
| 1034 | } |
| 1035 | |
| 1036 | /********************************************************** |
| 1037 | * handle 'Receiver went not ready'. |
| 1038 | */ |
| 1039 | |
| 1040 | static void ni52_rnr_int(struct net_device *dev) |
| 1041 | { |
| 1042 | struct priv *p = (struct priv *) dev->priv; |
| 1043 | |
| 1044 | p->stats.rx_errors++; |
| 1045 | |
| 1046 | WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ |
| 1047 | p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */ |
| 1048 | ni_attn586(); |
| 1049 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */ |
| 1050 | |
| 1051 | alloc_rfa(dev,(char *)p->rfd_first); |
| 1052 | /* maybe add a check here, before restarting the RU */ |
| 1053 | startrecv586(dev); /* restart RU */ |
| 1054 | |
| 1055 | printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus); |
| 1056 | |
| 1057 | } |
| 1058 | |
| 1059 | /********************************************************** |
| 1060 | * handle xmit - interrupt |
| 1061 | */ |
| 1062 | |
| 1063 | static void ni52_xmt_int(struct net_device *dev) |
| 1064 | { |
| 1065 | int status; |
| 1066 | struct priv *p = (struct priv *) dev->priv; |
| 1067 | |
| 1068 | if(debuglevel > 0) |
| 1069 | printk("X"); |
| 1070 | |
| 1071 | status = p->xmit_cmds[p->xmit_last]->cmd_status; |
| 1072 | if(!(status & STAT_COMPL)) |
| 1073 | printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name); |
| 1074 | |
| 1075 | if(status & STAT_OK) |
| 1076 | { |
| 1077 | p->stats.tx_packets++; |
| 1078 | p->stats.collisions += (status & TCMD_MAXCOLLMASK); |
| 1079 | } |
| 1080 | else |
| 1081 | { |
| 1082 | p->stats.tx_errors++; |
| 1083 | if(status & TCMD_LATECOLL) { |
| 1084 | printk("%s: late collision detected.\n",dev->name); |
| 1085 | p->stats.collisions++; |
| 1086 | } |
| 1087 | else if(status & TCMD_NOCARRIER) { |
| 1088 | p->stats.tx_carrier_errors++; |
| 1089 | printk("%s: no carrier detected.\n",dev->name); |
| 1090 | } |
| 1091 | else if(status & TCMD_LOSTCTS) |
| 1092 | printk("%s: loss of CTS detected.\n",dev->name); |
| 1093 | else if(status & TCMD_UNDERRUN) { |
| 1094 | p->stats.tx_fifo_errors++; |
| 1095 | printk("%s: DMA underrun detected.\n",dev->name); |
| 1096 | } |
| 1097 | else if(status & TCMD_MAXCOLL) { |
| 1098 | printk("%s: Max. collisions exceeded.\n",dev->name); |
| 1099 | p->stats.collisions += 16; |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | #if (NUM_XMIT_BUFFS > 1) |
| 1104 | if( (++p->xmit_last) == NUM_XMIT_BUFFS) |
| 1105 | p->xmit_last = 0; |
| 1106 | #endif |
| 1107 | netif_wake_queue(dev); |
| 1108 | } |
| 1109 | |
| 1110 | /*********************************************************** |
| 1111 | * (re)start the receiver |
| 1112 | */ |
| 1113 | |
| 1114 | static void startrecv586(struct net_device *dev) |
| 1115 | { |
| 1116 | struct priv *p = (struct priv *) dev->priv; |
| 1117 | |
| 1118 | WAIT_4_SCB_CMD(); |
| 1119 | WAIT_4_SCB_CMD_RUC(); |
| 1120 | p->scb->rfa_offset = make16(p->rfd_first); |
| 1121 | p->scb->cmd_ruc = RUC_START; |
| 1122 | ni_attn586(); /* start cmd. */ |
| 1123 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */ |
| 1124 | } |
| 1125 | |
| 1126 | static void ni52_timeout(struct net_device *dev) |
| 1127 | { |
| 1128 | struct priv *p = (struct priv *) dev->priv; |
| 1129 | #ifndef NO_NOPCOMMANDS |
| 1130 | if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */ |
| 1131 | { |
| 1132 | netif_wake_queue(dev); |
| 1133 | #ifdef DEBUG |
| 1134 | printk("%s: strange ... timeout with CU active?!?\n",dev->name); |
| 1135 | printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)p->xmit_cmds[0]->cmd_status,(int)p->nop_cmds[0]->cmd_status,(int)p->nop_cmds[1]->cmd_status,(int)p->nop_point); |
| 1136 | #endif |
| 1137 | p->scb->cmd_cuc = CUC_ABORT; |
| 1138 | ni_attn586(); |
| 1139 | WAIT_4_SCB_CMD(); |
| 1140 | p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]); |
| 1141 | p->scb->cmd_cuc = CUC_START; |
| 1142 | ni_attn586(); |
| 1143 | WAIT_4_SCB_CMD(); |
| 1144 | dev->trans_start = jiffies; |
| 1145 | return 0; |
| 1146 | } |
| 1147 | #endif |
| 1148 | { |
| 1149 | #ifdef DEBUG |
| 1150 | printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus); |
| 1151 | printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status); |
| 1152 | printk("%s: check, whether you set the right interrupt number!\n",dev->name); |
| 1153 | #endif |
| 1154 | ni52_close(dev); |
| 1155 | ni52_open(dev); |
| 1156 | } |
| 1157 | dev->trans_start = jiffies; |
| 1158 | } |
| 1159 | |
| 1160 | /****************************************************** |
| 1161 | * send frame |
| 1162 | */ |
| 1163 | |
| 1164 | static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev) |
| 1165 | { |
| 1166 | int len,i; |
| 1167 | #ifndef NO_NOPCOMMANDS |
| 1168 | int next_nop; |
| 1169 | #endif |
| 1170 | struct priv *p = (struct priv *) dev->priv; |
| 1171 | |
| 1172 | if(skb->len > XMIT_BUFF_SIZE) |
| 1173 | { |
| 1174 | printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len); |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
| 1178 | netif_stop_queue(dev); |
| 1179 | |
| 1180 | #if(NUM_XMIT_BUFFS > 1) |
| 1181 | if(test_and_set_bit(0,(void *) &p->lock)) { |
| 1182 | printk("%s: Queue was locked\n",dev->name); |
| 1183 | return 1; |
| 1184 | } |
| 1185 | else |
| 1186 | #endif |
| 1187 | { |
| 1188 | memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len); |
| 1189 | len = skb->len; |
| 1190 | if (len < ETH_ZLEN) { |
| 1191 | len = ETH_ZLEN; |
| 1192 | memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len); |
| 1193 | } |
| 1194 | |
| 1195 | #if (NUM_XMIT_BUFFS == 1) |
| 1196 | # ifdef NO_NOPCOMMANDS |
| 1197 | |
| 1198 | #ifdef DEBUG |
| 1199 | if(p->scb->cus & CU_ACTIVE) |
| 1200 | { |
| 1201 | printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name); |
| 1202 | printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status); |
| 1203 | } |
| 1204 | #endif |
| 1205 | |
| 1206 | p->xmit_buffs[0]->size = TBD_LAST | len; |
| 1207 | for(i=0;i<16;i++) |
| 1208 | { |
| 1209 | p->xmit_cmds[0]->cmd_status = 0; |
| 1210 | WAIT_4_SCB_CMD(); |
| 1211 | if( (p->scb->cus & CU_STATUS) == CU_SUSPEND) |
| 1212 | p->scb->cmd_cuc = CUC_RESUME; |
| 1213 | else |
| 1214 | { |
| 1215 | p->scb->cbl_offset = make16(p->xmit_cmds[0]); |
| 1216 | p->scb->cmd_cuc = CUC_START; |
| 1217 | } |
| 1218 | |
| 1219 | ni_attn586(); |
| 1220 | dev->trans_start = jiffies; |
| 1221 | if(!i) |
| 1222 | dev_kfree_skb(skb); |
| 1223 | WAIT_4_SCB_CMD(); |
| 1224 | if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */ |
| 1225 | break; |
| 1226 | if(p->xmit_cmds[0]->cmd_status) |
| 1227 | break; |
| 1228 | if(i==15) |
| 1229 | printk("%s: Can't start transmit-command.\n",dev->name); |
| 1230 | } |
| 1231 | # else |
| 1232 | next_nop = (p->nop_point + 1) & 0x1; |
| 1233 | p->xmit_buffs[0]->size = TBD_LAST | len; |
| 1234 | |
| 1235 | p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link |
| 1236 | = make16((p->nop_cmds[next_nop])); |
| 1237 | p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0; |
| 1238 | |
| 1239 | p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0])); |
| 1240 | dev->trans_start = jiffies; |
| 1241 | p->nop_point = next_nop; |
| 1242 | dev_kfree_skb(skb); |
| 1243 | # endif |
| 1244 | #else |
| 1245 | p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len; |
| 1246 | if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS ) |
| 1247 | next_nop = 0; |
| 1248 | |
| 1249 | p->xmit_cmds[p->xmit_count]->cmd_status = 0; |
| 1250 | /* linkpointer of xmit-command already points to next nop cmd */ |
| 1251 | p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop])); |
| 1252 | p->nop_cmds[next_nop]->cmd_status = 0; |
| 1253 | |
| 1254 | p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count])); |
| 1255 | dev->trans_start = jiffies; |
| 1256 | p->xmit_count = next_nop; |
| 1257 | |
| 1258 | { |
| 1259 | unsigned long flags; |
| 1260 | save_flags(flags); |
| 1261 | cli(); |
| 1262 | if(p->xmit_count != p->xmit_last) |
| 1263 | netif_wake_queue(dev); |
| 1264 | p->lock = 0; |
| 1265 | restore_flags(flags); |
| 1266 | } |
| 1267 | dev_kfree_skb(skb); |
| 1268 | #endif |
| 1269 | } |
| 1270 | return 0; |
| 1271 | } |
| 1272 | |
| 1273 | /******************************************* |
| 1274 | * Someone wanna have the statistics |
| 1275 | */ |
| 1276 | |
| 1277 | static struct net_device_stats *ni52_get_stats(struct net_device *dev) |
| 1278 | { |
| 1279 | struct priv *p = (struct priv *) dev->priv; |
| 1280 | unsigned short crc,aln,rsc,ovrn; |
| 1281 | |
| 1282 | crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */ |
| 1283 | p->scb->crc_errs = 0; |
| 1284 | aln = p->scb->aln_errs; |
| 1285 | p->scb->aln_errs = 0; |
| 1286 | rsc = p->scb->rsc_errs; |
| 1287 | p->scb->rsc_errs = 0; |
| 1288 | ovrn = p->scb->ovrn_errs; |
| 1289 | p->scb->ovrn_errs = 0; |
| 1290 | |
| 1291 | p->stats.rx_crc_errors += crc; |
| 1292 | p->stats.rx_fifo_errors += ovrn; |
| 1293 | p->stats.rx_frame_errors += aln; |
| 1294 | p->stats.rx_dropped += rsc; |
| 1295 | |
| 1296 | return &p->stats; |
| 1297 | } |
| 1298 | |
| 1299 | /******************************************************** |
| 1300 | * Set MC list .. |
| 1301 | */ |
| 1302 | |
| 1303 | static void set_multicast_list(struct net_device *dev) |
| 1304 | { |
| 1305 | netif_stop_queue(dev); |
| 1306 | ni_disint(); |
| 1307 | alloc586(dev); |
| 1308 | init586(dev); |
| 1309 | startrecv586(dev); |
| 1310 | ni_enaint(); |
| 1311 | netif_wake_queue(dev); |
| 1312 | } |
| 1313 | |
| 1314 | #ifdef MODULE |
| 1315 | static struct net_device *dev_ni52; |
| 1316 | |
| 1317 | module_param(io, int, 0); |
| 1318 | module_param(irq, int, 0); |
| 1319 | module_param(memstart, long, 0); |
| 1320 | module_param(memend, long, 0); |
| 1321 | MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); |
| 1322 | MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); |
| 1323 | MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); |
| 1324 | MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); |
| 1325 | |
Andrew Morton | 19a8664 | 2006-08-14 23:00:05 -0700 | [diff] [blame] | 1326 | int __init init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | { |
| 1328 | if(io <= 0x0 || !memend || !memstart || irq < 2) { |
| 1329 | printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); |
| 1330 | return -ENODEV; |
| 1331 | } |
| 1332 | dev_ni52 = ni52_probe(-1); |
| 1333 | if (IS_ERR(dev_ni52)) |
| 1334 | return PTR_ERR(dev_ni52); |
| 1335 | return 0; |
| 1336 | } |
| 1337 | |
| 1338 | void cleanup_module(void) |
| 1339 | { |
| 1340 | unregister_netdev(dev_ni52); |
| 1341 | release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); |
| 1342 | free_netdev(dev_ni52); |
| 1343 | } |
| 1344 | #endif /* MODULE */ |
| 1345 | |
| 1346 | #if 0 |
| 1347 | /* |
| 1348 | * DUMP .. we expect a not running CMD unit and enough space |
| 1349 | */ |
| 1350 | void ni52_dump(struct net_device *dev,void *ptr) |
| 1351 | { |
| 1352 | struct priv *p = (struct priv *) dev->priv; |
| 1353 | struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr; |
| 1354 | int i; |
| 1355 | |
| 1356 | p->scb->cmd_cuc = CUC_ABORT; |
| 1357 | ni_attn586(); |
| 1358 | WAIT_4_SCB_CMD(); |
| 1359 | WAIT_4_SCB_CMD_RUC(); |
| 1360 | |
| 1361 | dump_cmd->cmd_status = 0; |
| 1362 | dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST; |
| 1363 | dump_cmd->dump_offset = make16((dump_cmd + 1)); |
| 1364 | dump_cmd->cmd_link = 0xffff; |
| 1365 | |
| 1366 | p->scb->cbl_offset = make16(dump_cmd); |
| 1367 | p->scb->cmd_cuc = CUC_START; |
| 1368 | ni_attn586(); |
| 1369 | WAIT_4_STAT_COMPL(dump_cmd); |
| 1370 | |
| 1371 | if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) |
| 1372 | printk("%s: Can't get dump information.\n",dev->name); |
| 1373 | |
| 1374 | for(i=0;i<170;i++) { |
| 1375 | printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]); |
| 1376 | if(i % 24 == 23) |
| 1377 | printk("\n"); |
| 1378 | } |
| 1379 | printk("\n"); |
| 1380 | } |
| 1381 | #endif |
| 1382 | MODULE_LICENSE("GPL"); |
| 1383 | |
| 1384 | /* |
| 1385 | * END: linux/drivers/net/ni52.c |
| 1386 | */ |