Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Intel EtherExpress 16 device driver for Linux |
2 | * | |
3 | * Written by John Sullivan, 1995 | |
4 | * based on original code by Donald Becker, with changes by | |
5 | * Alan Cox and Pauline Middelink. | |
6 | * | |
7 | * Support for 8-bit mode by Zoltan Szilagyi <zoltans@cs.arizona.edu> | |
8 | * | |
9 | * Many modifications, and currently maintained, by | |
10 | * Philip Blundell <philb@gnu.org> | |
11 | * Added the Compaq LTE Alan Cox <alan@redhat.com> | |
12 | * Added MCA support Adam Fritzler <mid@auk.cx> | |
13 | * | |
14 | * Note - this driver is experimental still - it has problems on faster | |
15 | * machines. Someone needs to sit down and go through it line by line with | |
16 | * a databook... | |
17 | */ | |
18 | ||
19 | /* The EtherExpress 16 is a fairly simple card, based on a shared-memory | |
20 | * design using the i82586 Ethernet coprocessor. It bears no relationship, | |
21 | * as far as I know, to the similarly-named "EtherExpress Pro" range. | |
22 | * | |
23 | * Historically, Linux support for these cards has been very bad. However, | |
24 | * things seem to be getting better slowly. | |
25 | */ | |
26 | ||
27 | /* If your card is confused about what sort of interface it has (eg it | |
28 | * persistently reports "10baseT" when none is fitted), running 'SOFTSET /BART' | |
29 | * or 'SOFTSET /LISA' from DOS seems to help. | |
30 | */ | |
31 | ||
32 | /* Here's the scoop on memory mapping. | |
33 | * | |
34 | * There are three ways to access EtherExpress card memory: either using the | |
35 | * shared-memory mapping, or using PIO through the dataport, or using PIO | |
36 | * through the "shadow memory" ports. | |
37 | * | |
38 | * The shadow memory system works by having the card map some of its memory | |
39 | * as follows: | |
40 | * | |
41 | * (the low five bits of the SMPTR are ignored) | |
42 | * | |
43 | * base+0x4000..400f memory at SMPTR+0..15 | |
44 | * base+0x8000..800f memory at SMPTR+16..31 | |
45 | * base+0xc000..c007 dubious stuff (memory at SMPTR+16..23 apparently) | |
46 | * base+0xc008..c00f memory at 0x0008..0x000f | |
47 | * | |
48 | * This last set (the one at c008) is particularly handy because the SCB | |
49 | * lives at 0x0008. So that set of ports gives us easy random access to data | |
50 | * in the SCB without having to mess around setting up pointers and the like. | |
51 | * We always use this method to access the SCB (via the scb_xx() functions). | |
52 | * | |
53 | * Dataport access works by aiming the appropriate (read or write) pointer | |
54 | * at the first address you're interested in, and then reading or writing from | |
55 | * the dataport. The pointers auto-increment after each transfer. We use | |
56 | * this for data transfer. | |
57 | * | |
58 | * We don't use the shared-memory system because it allegedly doesn't work on | |
59 | * all cards, and because it's a bit more prone to go wrong (it's one more | |
60 | * thing to configure...). | |
61 | */ | |
62 | ||
63 | /* Known bugs: | |
64 | * | |
65 | * - The card seems to want to give us two interrupts every time something | |
66 | * happens, where just one would be better. | |
67 | */ | |
68 | ||
69 | /* | |
70 | * | |
71 | * Note by Zoltan Szilagyi 10-12-96: | |
72 | * | |
73 | * I've succeeded in eliminating the "CU wedged" messages, and hence the | |
74 | * lockups, which were only occurring with cards running in 8-bit mode ("force | |
75 | * 8-bit operation" in Intel's SoftSet utility). This version of the driver | |
76 | * sets the 82586 and the ASIC to 8-bit mode at startup; it also stops the | |
77 | * CU before submitting a packet for transmission, and then restarts it as soon | |
78 | * as the process of handing the packet is complete. This is definitely an | |
79 | * unnecessary slowdown if the card is running in 16-bit mode; therefore one | |
6aa20a22 | 80 | * should detect 16-bit vs 8-bit mode from the EEPROM settings and act |
1da177e4 LT |
81 | * accordingly. In 8-bit mode with this bugfix I'm getting about 150 K/s for |
82 | * ftp's, which is significantly better than I get in DOS, so the overhead of | |
83 | * stopping and restarting the CU with each transmit is not prohibitive in | |
84 | * practice. | |
85 | * | |
86 | * Update by David Woodhouse 11/5/99: | |
87 | * | |
88 | * I've seen "CU wedged" messages in 16-bit mode, on the Alpha architecture. | |
89 | * I assume that this is because 16-bit accesses are actually handled as two | |
90 | * 8-bit accesses. | |
91 | */ | |
92 | ||
93 | #ifdef __alpha__ | |
94 | #define LOCKUP16 1 | |
95 | #endif | |
96 | #ifndef LOCKUP16 | |
97 | #define LOCKUP16 0 | |
98 | #endif | |
6aa20a22 | 99 | |
1da177e4 LT |
100 | #include <linux/module.h> |
101 | #include <linux/kernel.h> | |
102 | #include <linux/types.h> | |
103 | #include <linux/fcntl.h> | |
104 | #include <linux/interrupt.h> | |
105 | #include <linux/ioport.h> | |
106 | #include <linux/string.h> | |
107 | #include <linux/in.h> | |
108 | #include <linux/delay.h> | |
109 | #include <linux/errno.h> | |
110 | #include <linux/init.h> | |
111 | #include <linux/netdevice.h> | |
112 | #include <linux/etherdevice.h> | |
113 | #include <linux/skbuff.h> | |
114 | #include <linux/slab.h> | |
115 | #include <linux/mca-legacy.h> | |
116 | #include <linux/spinlock.h> | |
117 | #include <linux/bitops.h> | |
d7ef45b0 | 118 | #include <linux/jiffies.h> |
1da177e4 LT |
119 | |
120 | #include <asm/system.h> | |
121 | #include <asm/io.h> | |
122 | #include <asm/irq.h> | |
123 | ||
124 | #ifndef NET_DEBUG | |
125 | #define NET_DEBUG 4 | |
126 | #endif | |
127 | ||
128 | #include "eexpress.h" | |
129 | ||
130 | #define EEXP_IO_EXTENT 16 | |
131 | ||
132 | /* | |
133 | * Private data declarations | |
134 | */ | |
135 | ||
136 | struct net_local | |
137 | { | |
138 | struct net_device_stats stats; | |
139 | unsigned long last_tx; /* jiffies when last transmit started */ | |
140 | unsigned long init_time; /* jiffies when eexp_hw_init586 called */ | |
141 | unsigned short rx_first; /* first rx buf, same as RX_BUF_START */ | |
142 | unsigned short rx_last; /* last rx buf */ | |
143 | unsigned short rx_ptr; /* first rx buf to look at */ | |
144 | unsigned short tx_head; /* next free tx buf */ | |
145 | unsigned short tx_reap; /* first in-use tx buf */ | |
146 | unsigned short tx_tail; /* previous tx buf to tx_head */ | |
147 | unsigned short tx_link; /* last known-executing tx buf */ | |
148 | unsigned short last_tx_restart; /* set to tx_link when we | |
149 | restart the CU */ | |
150 | unsigned char started; | |
151 | unsigned short rx_buf_start; | |
152 | unsigned short rx_buf_end; | |
153 | unsigned short num_tx_bufs; | |
154 | unsigned short num_rx_bufs; | |
155 | unsigned char width; /* 0 for 16bit, 1 for 8bit */ | |
156 | unsigned char was_promisc; | |
157 | unsigned char old_mc_count; | |
158 | spinlock_t lock; | |
159 | }; | |
160 | ||
161 | /* This is the code and data that is downloaded to the EtherExpress card's | |
162 | * memory at boot time. | |
163 | */ | |
164 | ||
165 | static unsigned short start_code[] = { | |
166 | /* 0x0000 */ | |
167 | 0x0001, /* ISCP: busy - cleared after reset */ | |
168 | 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */ | |
169 | ||
170 | 0x0000,0x0000, /* SCB: status, commands */ | |
171 | 0x0000,0x0000, /* links to first command block, | |
172 | first receive descriptor */ | |
173 | 0x0000,0x0000, /* CRC error, alignment error counts */ | |
174 | 0x0000,0x0000, /* out of resources, overrun error counts */ | |
175 | ||
176 | 0x0000,0x0000, /* pad */ | |
177 | 0x0000,0x0000, | |
178 | ||
179 | /* 0x20 -- start of 82586 CU program */ | |
180 | #define CONF_LINK 0x20 | |
6aa20a22 | 181 | 0x0000,Cmd_Config, |
1da177e4 LT |
182 | 0x0032, /* link to next command */ |
183 | 0x080c, /* 12 bytes follow : fifo threshold=8 */ | |
184 | 0x2e40, /* don't rx bad frames | |
185 | * SRDY/ARDY => ext. sync. : preamble len=8 | |
186 | * take addresses from data buffers | |
187 | * 6 bytes/address | |
188 | */ | |
189 | 0x6000, /* default backoff method & priority | |
190 | * interframe spacing = 0x60 */ | |
6aa20a22 | 191 | 0xf200, /* slot time=0x200 |
1da177e4 LT |
192 | * max collision retry = 0xf */ |
193 | #define CONF_PROMISC 0x2e | |
6aa20a22 | 194 | 0x0000, /* no HDLC : normal CRC : enable broadcast |
1da177e4 LT |
195 | * disable promiscuous/multicast modes */ |
196 | 0x003c, /* minimum frame length = 60 octets) */ | |
197 | ||
198 | 0x0000,Cmd_SetAddr, | |
199 | 0x003e, /* link to next command */ | |
200 | #define CONF_HWADDR 0x38 | |
201 | 0x0000,0x0000,0x0000, /* hardware address placed here */ | |
202 | ||
203 | 0x0000,Cmd_MCast, | |
204 | 0x0076, /* link to next command */ | |
205 | #define CONF_NR_MULTICAST 0x44 | |
206 | 0x0000, /* number of multicast addresses */ | |
207 | #define CONF_MULTICAST 0x46 | |
208 | 0x0000, 0x0000, 0x0000, /* some addresses */ | |
209 | 0x0000, 0x0000, 0x0000, | |
210 | 0x0000, 0x0000, 0x0000, | |
211 | 0x0000, 0x0000, 0x0000, | |
212 | 0x0000, 0x0000, 0x0000, | |
213 | 0x0000, 0x0000, 0x0000, | |
214 | 0x0000, 0x0000, 0x0000, | |
215 | 0x0000, 0x0000, 0x0000, | |
216 | ||
217 | #define CONF_DIAG_RESULT 0x76 | |
218 | 0x0000, Cmd_Diag, | |
219 | 0x007c, /* link to next command */ | |
220 | ||
221 | 0x0000,Cmd_TDR|Cmd_INT, | |
222 | 0x0084, | |
223 | #define CONF_TDR_RESULT 0x82 | |
224 | 0x0000, | |
225 | ||
226 | 0x0000,Cmd_END|Cmd_Nop, /* end of configure sequence */ | |
227 | 0x0084 /* dummy link */ | |
228 | }; | |
229 | ||
230 | /* maps irq number to EtherExpress magic value */ | |
231 | static char irqrmap[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 }; | |
232 | ||
233 | #ifdef CONFIG_MCA_LEGACY | |
234 | /* mapping of the first four bits of the second POS register */ | |
235 | static unsigned short mca_iomap[] = { | |
236 | 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200, | |
237 | 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300 | |
238 | }; | |
239 | /* bits 5-7 of the second POS register */ | |
240 | static char mca_irqmap[] = { 12, 9, 3, 4, 5, 10, 11, 15 }; | |
6aa20a22 | 241 | #endif |
1da177e4 LT |
242 | |
243 | /* | |
244 | * Prototypes for Linux interface | |
245 | */ | |
246 | ||
247 | static int eexp_open(struct net_device *dev); | |
248 | static int eexp_close(struct net_device *dev); | |
249 | static void eexp_timeout(struct net_device *dev); | |
250 | static struct net_device_stats *eexp_stats(struct net_device *dev); | |
251 | static int eexp_xmit(struct sk_buff *buf, struct net_device *dev); | |
252 | ||
7d12e780 | 253 | static irqreturn_t eexp_irq(int irq, void *dev_addr); |
1da177e4 LT |
254 | static void eexp_set_multicast(struct net_device *dev); |
255 | ||
256 | /* | |
257 | * Prototypes for hardware access functions | |
258 | */ | |
259 | ||
260 | static void eexp_hw_rx_pio(struct net_device *dev); | |
261 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, | |
262 | unsigned short len); | |
263 | static int eexp_hw_probe(struct net_device *dev,unsigned short ioaddr); | |
264 | static unsigned short eexp_hw_readeeprom(unsigned short ioaddr, | |
265 | unsigned char location); | |
266 | ||
267 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev); | |
268 | static void eexp_hw_txrestart(struct net_device *dev); | |
269 | ||
270 | static void eexp_hw_txinit (struct net_device *dev); | |
271 | static void eexp_hw_rxinit (struct net_device *dev); | |
272 | ||
273 | static void eexp_hw_init586 (struct net_device *dev); | |
274 | static void eexp_setup_filter (struct net_device *dev); | |
275 | ||
276 | static char *eexp_ifmap[]={"AUI", "BNC", "RJ45"}; | |
277 | enum eexp_iftype {AUI=0, BNC=1, TPE=2}; | |
278 | ||
279 | #define STARTED_RU 2 | |
280 | #define STARTED_CU 1 | |
281 | ||
282 | /* | |
283 | * Primitive hardware access functions. | |
284 | */ | |
285 | ||
286 | static inline unsigned short scb_status(struct net_device *dev) | |
287 | { | |
288 | return inw(dev->base_addr + 0xc008); | |
289 | } | |
290 | ||
291 | static inline unsigned short scb_rdcmd(struct net_device *dev) | |
292 | { | |
293 | return inw(dev->base_addr + 0xc00a); | |
294 | } | |
295 | ||
296 | static inline void scb_command(struct net_device *dev, unsigned short cmd) | |
297 | { | |
298 | outw(cmd, dev->base_addr + 0xc00a); | |
299 | } | |
300 | ||
301 | static inline void scb_wrcbl(struct net_device *dev, unsigned short val) | |
302 | { | |
303 | outw(val, dev->base_addr + 0xc00c); | |
304 | } | |
305 | ||
306 | static inline void scb_wrrfa(struct net_device *dev, unsigned short val) | |
307 | { | |
308 | outw(val, dev->base_addr + 0xc00e); | |
309 | } | |
310 | ||
311 | static inline void set_loopback(struct net_device *dev) | |
312 | { | |
313 | outb(inb(dev->base_addr + Config) | 2, dev->base_addr + Config); | |
314 | } | |
315 | ||
316 | static inline void clear_loopback(struct net_device *dev) | |
317 | { | |
318 | outb(inb(dev->base_addr + Config) & ~2, dev->base_addr + Config); | |
319 | } | |
320 | ||
321 | static inline unsigned short int SHADOW(short int addr) | |
322 | { | |
323 | addr &= 0x1f; | |
324 | if (addr > 0xf) addr += 0x3ff0; | |
325 | return addr + 0x4000; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Linux interface | |
330 | */ | |
331 | ||
332 | /* | |
333 | * checks for presence of EtherExpress card | |
334 | */ | |
335 | ||
336 | static int __init do_express_probe(struct net_device *dev) | |
337 | { | |
338 | unsigned short *port; | |
339 | static unsigned short ports[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 }; | |
340 | unsigned short ioaddr = dev->base_addr; | |
341 | int dev_irq = dev->irq; | |
342 | int err; | |
343 | ||
1da177e4 LT |
344 | dev->if_port = 0xff; /* not set */ |
345 | ||
346 | #ifdef CONFIG_MCA_LEGACY | |
347 | if (MCA_bus) { | |
348 | int slot = 0; | |
349 | ||
350 | /* | |
351 | * Only find one card at a time. Subsequent calls | |
352 | * will find others, however, proper multicard MCA | |
353 | * probing and setup can't be done with the | |
354 | * old-style Space.c init routines. -- ASF | |
355 | */ | |
356 | while (slot != MCA_NOTFOUND) { | |
357 | int pos0, pos1; | |
6aa20a22 | 358 | |
1da177e4 LT |
359 | slot = mca_find_unused_adapter(0x628B, slot); |
360 | if (slot == MCA_NOTFOUND) | |
361 | break; | |
362 | ||
363 | pos0 = mca_read_stored_pos(slot, 2); | |
364 | pos1 = mca_read_stored_pos(slot, 3); | |
365 | ioaddr = mca_iomap[pos1&0xf]; | |
366 | ||
367 | dev->irq = mca_irqmap[(pos1>>4)&0x7]; | |
6aa20a22 | 368 | |
1da177e4 LT |
369 | /* |
370 | * XXX: Transciever selection is done | |
6aa20a22 | 371 | * differently on the MCA version. |
1da177e4 LT |
372 | * How to get it to select something |
373 | * other than external/AUI is currently | |
374 | * unknown. This code is just for looks. -- ASF | |
375 | */ | |
376 | if ((pos0 & 0x7) == 0x1) | |
377 | dev->if_port = AUI; | |
378 | else if ((pos0 & 0x7) == 0x5) { | |
379 | if (pos1 & 0x80) | |
380 | dev->if_port = BNC; | |
381 | else | |
382 | dev->if_port = TPE; | |
383 | } | |
384 | ||
385 | mca_set_adapter_name(slot, "Intel EtherExpress 16 MCA"); | |
386 | mca_set_adapter_procfn(slot, NULL, dev); | |
387 | mca_mark_as_used(slot); | |
388 | ||
389 | break; | |
390 | } | |
391 | } | |
392 | #endif | |
393 | if (ioaddr&0xfe00) { | |
394 | if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) | |
395 | return -EBUSY; | |
396 | err = eexp_hw_probe(dev,ioaddr); | |
397 | release_region(ioaddr, EEXP_IO_EXTENT); | |
398 | return err; | |
399 | } else if (ioaddr) | |
400 | return -ENXIO; | |
401 | ||
402 | for (port=&ports[0] ; *port ; port++ ) | |
403 | { | |
404 | unsigned short sum = 0; | |
405 | int i; | |
406 | if (!request_region(*port, EEXP_IO_EXTENT, "EtherExpress")) | |
407 | continue; | |
408 | for ( i=0 ; i<4 ; i++ ) | |
409 | { | |
410 | unsigned short t; | |
411 | t = inb(*port + ID_PORT); | |
412 | sum |= (t>>4) << ((t & 0x03)<<2); | |
413 | } | |
414 | if (sum==0xbaba && !eexp_hw_probe(dev,*port)) { | |
415 | release_region(*port, EEXP_IO_EXTENT); | |
416 | return 0; | |
417 | } | |
418 | release_region(*port, EEXP_IO_EXTENT); | |
419 | dev->irq = dev_irq; | |
420 | } | |
421 | return -ENODEV; | |
422 | } | |
423 | ||
424 | #ifndef MODULE | |
425 | struct net_device * __init express_probe(int unit) | |
426 | { | |
427 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
428 | int err; | |
429 | ||
430 | if (!dev) | |
431 | return ERR_PTR(-ENOMEM); | |
432 | ||
433 | sprintf(dev->name, "eth%d", unit); | |
434 | netdev_boot_setup_check(dev); | |
435 | ||
436 | err = do_express_probe(dev); | |
b1fc5505 | 437 | if (!err) |
438 | return dev; | |
1da177e4 LT |
439 | free_netdev(dev); |
440 | return ERR_PTR(err); | |
441 | } | |
442 | #endif | |
443 | ||
444 | /* | |
445 | * open and initialize the adapter, ready for use | |
446 | */ | |
447 | ||
448 | static int eexp_open(struct net_device *dev) | |
449 | { | |
450 | int ret; | |
451 | unsigned short ioaddr = dev->base_addr; | |
452 | struct net_local *lp = netdev_priv(dev); | |
453 | ||
454 | #if NET_DEBUG > 6 | |
455 | printk(KERN_DEBUG "%s: eexp_open()\n", dev->name); | |
456 | #endif | |
457 | ||
458 | if (!dev->irq || !irqrmap[dev->irq]) | |
459 | return -ENXIO; | |
460 | ||
461 | ret = request_irq(dev->irq,&eexp_irq,0,dev->name,dev); | |
462 | if (ret) return ret; | |
463 | ||
464 | if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) { | |
465 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" | |
466 | , ioaddr); | |
467 | goto err_out1; | |
468 | } | |
469 | if (!request_region(ioaddr+0x4000, EEXP_IO_EXTENT, "EtherExpress shadow")) { | |
470 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" | |
471 | , ioaddr+0x4000); | |
472 | goto err_out2; | |
473 | } | |
474 | if (!request_region(ioaddr+0x8000, EEXP_IO_EXTENT, "EtherExpress shadow")) { | |
475 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" | |
476 | , ioaddr+0x8000); | |
477 | goto err_out3; | |
478 | } | |
479 | if (!request_region(ioaddr+0xc000, EEXP_IO_EXTENT, "EtherExpress shadow")) { | |
480 | printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" | |
481 | , ioaddr+0xc000); | |
482 | goto err_out4; | |
483 | } | |
6aa20a22 | 484 | |
1da177e4 LT |
485 | if (lp->width) { |
486 | printk("%s: forcing ASIC to 8-bit mode\n", dev->name); | |
487 | outb(inb(dev->base_addr+Config)&~4, dev->base_addr+Config); | |
488 | } | |
489 | ||
490 | eexp_hw_init586(dev); | |
491 | netif_start_queue(dev); | |
492 | #if NET_DEBUG > 6 | |
493 | printk(KERN_DEBUG "%s: leaving eexp_open()\n", dev->name); | |
494 | #endif | |
495 | return 0; | |
496 | ||
497 | err_out4: | |
498 | release_region(ioaddr+0x8000, EEXP_IO_EXTENT); | |
499 | err_out3: | |
500 | release_region(ioaddr+0x4000, EEXP_IO_EXTENT); | |
501 | err_out2: | |
502 | release_region(ioaddr, EEXP_IO_EXTENT); | |
503 | err_out1: | |
504 | free_irq(dev->irq, dev); | |
505 | return -EBUSY; | |
506 | } | |
507 | ||
508 | /* | |
509 | * close and disable the interface, leaving the 586 in reset. | |
510 | */ | |
511 | ||
512 | static int eexp_close(struct net_device *dev) | |
513 | { | |
514 | unsigned short ioaddr = dev->base_addr; | |
515 | struct net_local *lp = netdev_priv(dev); | |
516 | ||
517 | int irq = dev->irq; | |
518 | ||
519 | netif_stop_queue(dev); | |
6aa20a22 | 520 | |
1da177e4 LT |
521 | outb(SIRQ_dis|irqrmap[irq],ioaddr+SET_IRQ); |
522 | lp->started = 0; | |
523 | scb_command(dev, SCB_CUsuspend|SCB_RUsuspend); | |
524 | outb(0,ioaddr+SIGNAL_CA); | |
525 | free_irq(irq,dev); | |
526 | outb(i586_RST,ioaddr+EEPROM_Ctrl); | |
527 | release_region(ioaddr, EEXP_IO_EXTENT); | |
528 | release_region(ioaddr+0x4000, 16); | |
529 | release_region(ioaddr+0x8000, 16); | |
530 | release_region(ioaddr+0xc000, 16); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Return interface stats | |
537 | */ | |
538 | ||
539 | static struct net_device_stats *eexp_stats(struct net_device *dev) | |
540 | { | |
541 | struct net_local *lp = netdev_priv(dev); | |
542 | ||
543 | return &lp->stats; | |
544 | } | |
545 | ||
546 | /* | |
547 | * This gets called when a higher level thinks we are broken. Check that | |
548 | * nothing has become jammed in the CU. | |
549 | */ | |
550 | ||
551 | static void unstick_cu(struct net_device *dev) | |
552 | { | |
553 | struct net_local *lp = netdev_priv(dev); | |
554 | unsigned short ioaddr = dev->base_addr; | |
555 | ||
556 | if (lp->started) | |
557 | { | |
d7ef45b0 | 558 | if (time_after(jiffies, dev->trans_start + 50)) |
1da177e4 LT |
559 | { |
560 | if (lp->tx_link==lp->last_tx_restart) | |
561 | { | |
562 | unsigned short boguscount=200,rsst; | |
563 | printk(KERN_WARNING "%s: Retransmit timed out, status %04x, resetting...\n", | |
564 | dev->name, scb_status(dev)); | |
565 | eexp_hw_txinit(dev); | |
566 | lp->last_tx_restart = 0; | |
567 | scb_wrcbl(dev, lp->tx_link); | |
568 | scb_command(dev, SCB_CUstart); | |
569 | outb(0,ioaddr+SIGNAL_CA); | |
570 | while (!SCB_complete(rsst=scb_status(dev))) | |
571 | { | |
572 | if (!--boguscount) | |
573 | { | |
574 | boguscount=200; | |
575 | printk(KERN_WARNING "%s: Reset timed out status %04x, retrying...\n", | |
576 | dev->name,rsst); | |
577 | scb_wrcbl(dev, lp->tx_link); | |
578 | scb_command(dev, SCB_CUstart); | |
579 | outb(0,ioaddr+SIGNAL_CA); | |
580 | } | |
581 | } | |
582 | netif_wake_queue(dev); | |
583 | } | |
584 | else | |
585 | { | |
586 | unsigned short status = scb_status(dev); | |
587 | if (SCB_CUdead(status)) | |
588 | { | |
589 | unsigned short txstatus = eexp_hw_lasttxstat(dev); | |
590 | printk(KERN_WARNING "%s: Transmit timed out, CU not active status %04x %04x, restarting...\n", | |
591 | dev->name, status, txstatus); | |
592 | eexp_hw_txrestart(dev); | |
593 | } | |
594 | else | |
595 | { | |
596 | unsigned short txstatus = eexp_hw_lasttxstat(dev); | |
597 | if (netif_queue_stopped(dev) && !txstatus) | |
598 | { | |
599 | printk(KERN_WARNING "%s: CU wedged, status %04x %04x, resetting...\n", | |
600 | dev->name,status,txstatus); | |
601 | eexp_hw_init586(dev); | |
602 | netif_wake_queue(dev); | |
603 | } | |
604 | else | |
605 | { | |
606 | printk(KERN_WARNING "%s: transmit timed out\n", dev->name); | |
607 | } | |
608 | } | |
609 | } | |
610 | } | |
611 | } | |
612 | else | |
613 | { | |
d7ef45b0 | 614 | if (time_after(jiffies, lp->init_time + 10)) |
1da177e4 LT |
615 | { |
616 | unsigned short status = scb_status(dev); | |
617 | printk(KERN_WARNING "%s: i82586 startup timed out, status %04x, resetting...\n", | |
618 | dev->name, status); | |
619 | eexp_hw_init586(dev); | |
620 | netif_wake_queue(dev); | |
621 | } | |
622 | } | |
623 | } | |
624 | ||
625 | static void eexp_timeout(struct net_device *dev) | |
626 | { | |
627 | struct net_local *lp = netdev_priv(dev); | |
628 | #ifdef CONFIG_SMP | |
629 | unsigned long flags; | |
630 | #endif | |
631 | int status; | |
6aa20a22 | 632 | |
1da177e4 LT |
633 | disable_irq(dev->irq); |
634 | ||
635 | /* | |
636 | * Best would be to use synchronize_irq(); spin_lock() here | |
637 | * lets make it work first.. | |
638 | */ | |
6aa20a22 | 639 | |
1da177e4 LT |
640 | #ifdef CONFIG_SMP |
641 | spin_lock_irqsave(&lp->lock, flags); | |
642 | #endif | |
643 | ||
644 | status = scb_status(dev); | |
645 | unstick_cu(dev); | |
646 | printk(KERN_INFO "%s: transmit timed out, %s?\n", dev->name, | |
647 | (SCB_complete(status)?"lost interrupt": | |
648 | "board on fire")); | |
649 | lp->stats.tx_errors++; | |
650 | lp->last_tx = jiffies; | |
651 | if (!SCB_complete(status)) { | |
652 | scb_command(dev, SCB_CUabort); | |
653 | outb(0,dev->base_addr+SIGNAL_CA); | |
654 | } | |
6aa20a22 | 655 | netif_wake_queue(dev); |
1da177e4 LT |
656 | #ifdef CONFIG_SMP |
657 | spin_unlock_irqrestore(&lp->lock, flags); | |
658 | #endif | |
659 | } | |
660 | ||
661 | /* | |
662 | * Called to transmit a packet, or to allow us to right ourselves | |
663 | * if the kernel thinks we've died. | |
664 | */ | |
665 | static int eexp_xmit(struct sk_buff *buf, struct net_device *dev) | |
666 | { | |
667 | struct net_local *lp = netdev_priv(dev); | |
668 | short length = buf->len; | |
669 | #ifdef CONFIG_SMP | |
670 | unsigned long flags; | |
671 | #endif | |
672 | ||
673 | #if NET_DEBUG > 6 | |
674 | printk(KERN_DEBUG "%s: eexp_xmit()\n", dev->name); | |
675 | #endif | |
676 | ||
677 | if (buf->len < ETH_ZLEN) { | |
5b057c6b | 678 | if (skb_padto(buf, ETH_ZLEN)) |
1da177e4 LT |
679 | return 0; |
680 | length = ETH_ZLEN; | |
681 | } | |
682 | ||
683 | disable_irq(dev->irq); | |
684 | ||
685 | /* | |
686 | * Best would be to use synchronize_irq(); spin_lock() here | |
687 | * lets make it work first.. | |
688 | */ | |
6aa20a22 | 689 | |
1da177e4 LT |
690 | #ifdef CONFIG_SMP |
691 | spin_lock_irqsave(&lp->lock, flags); | |
692 | #endif | |
6aa20a22 | 693 | |
1da177e4 LT |
694 | { |
695 | unsigned short *data = (unsigned short *)buf->data; | |
696 | ||
697 | lp->stats.tx_bytes += length; | |
698 | ||
699 | eexp_hw_tx_pio(dev,data,length); | |
700 | } | |
701 | dev_kfree_skb(buf); | |
702 | #ifdef CONFIG_SMP | |
703 | spin_unlock_irqrestore(&lp->lock, flags); | |
704 | #endif | |
705 | enable_irq(dev->irq); | |
706 | return 0; | |
707 | } | |
708 | ||
1da177e4 LT |
709 | /* |
710 | * Handle an EtherExpress interrupt | |
711 | * If we've finished initializing, start the RU and CU up. | |
712 | * If we've already started, reap tx buffers, handle any received packets, | |
713 | * check to make sure we've not become wedged. | |
714 | */ | |
715 | ||
716 | static unsigned short eexp_start_irq(struct net_device *dev, | |
717 | unsigned short status) | |
718 | { | |
719 | unsigned short ack_cmd = SCB_ack(status); | |
720 | struct net_local *lp = netdev_priv(dev); | |
721 | unsigned short ioaddr = dev->base_addr; | |
722 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_CU)) { | |
723 | short diag_status, tdr_status; | |
724 | while (SCB_CUstat(status)==2) | |
725 | status = scb_status(dev); | |
726 | #if NET_DEBUG > 4 | |
727 | printk("%s: CU went non-active (status %04x)\n", | |
728 | dev->name, status); | |
729 | #endif | |
730 | ||
731 | outw(CONF_DIAG_RESULT & ~31, ioaddr + SM_PTR); | |
732 | diag_status = inw(ioaddr + SHADOW(CONF_DIAG_RESULT)); | |
733 | if (diag_status & 1<<11) { | |
6aa20a22 | 734 | printk(KERN_WARNING "%s: 82586 failed self-test\n", |
1da177e4 LT |
735 | dev->name); |
736 | } else if (!(diag_status & 1<<13)) { | |
737 | printk(KERN_WARNING "%s: 82586 self-test failed to complete\n", dev->name); | |
738 | } | |
739 | ||
740 | outw(CONF_TDR_RESULT & ~31, ioaddr + SM_PTR); | |
741 | tdr_status = inw(ioaddr + SHADOW(CONF_TDR_RESULT)); | |
742 | if (tdr_status & (TDR_SHORT|TDR_OPEN)) { | |
743 | printk(KERN_WARNING "%s: TDR reports cable %s at %d tick%s\n", dev->name, (tdr_status & TDR_SHORT)?"short":"broken", tdr_status & TDR_TIME, ((tdr_status & TDR_TIME) != 1) ? "s" : ""); | |
6aa20a22 | 744 | } |
1da177e4 LT |
745 | else if (tdr_status & TDR_XCVRPROBLEM) { |
746 | printk(KERN_WARNING "%s: TDR reports transceiver problem\n", dev->name); | |
747 | } | |
748 | else if (tdr_status & TDR_LINKOK) { | |
749 | #if NET_DEBUG > 4 | |
750 | printk(KERN_DEBUG "%s: TDR reports link OK\n", dev->name); | |
751 | #endif | |
752 | } else { | |
753 | printk("%s: TDR is ga-ga (status %04x)\n", dev->name, | |
754 | tdr_status); | |
755 | } | |
6aa20a22 | 756 | |
1da177e4 LT |
757 | lp->started |= STARTED_CU; |
758 | scb_wrcbl(dev, lp->tx_link); | |
759 | /* if the RU isn't running, start it now */ | |
760 | if (!(lp->started & STARTED_RU)) { | |
761 | ack_cmd |= SCB_RUstart; | |
762 | scb_wrrfa(dev, lp->rx_buf_start); | |
763 | lp->rx_ptr = lp->rx_buf_start; | |
764 | lp->started |= STARTED_RU; | |
765 | } | |
766 | ack_cmd |= SCB_CUstart | 0x2000; | |
767 | } | |
768 | ||
6aa20a22 | 769 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_RU) && SCB_RUstat(status)==4) |
1da177e4 LT |
770 | lp->started|=STARTED_RU; |
771 | ||
772 | return ack_cmd; | |
773 | } | |
774 | ||
775 | static void eexp_cmd_clear(struct net_device *dev) | |
776 | { | |
777 | unsigned long int oldtime = jiffies; | |
1c0d6dcf | 778 | while (scb_rdcmd(dev) && (time_before(jiffies, oldtime + 10))); |
1da177e4 LT |
779 | if (scb_rdcmd(dev)) { |
780 | printk("%s: command didn't clear\n", dev->name); | |
781 | } | |
782 | } | |
6aa20a22 | 783 | |
7d12e780 | 784 | static irqreturn_t eexp_irq(int irq, void *dev_info) |
1da177e4 LT |
785 | { |
786 | struct net_device *dev = dev_info; | |
787 | struct net_local *lp; | |
788 | unsigned short ioaddr,status,ack_cmd; | |
789 | unsigned short old_read_ptr, old_write_ptr; | |
790 | ||
1da177e4 LT |
791 | lp = netdev_priv(dev); |
792 | ioaddr = dev->base_addr; | |
793 | ||
794 | spin_lock(&lp->lock); | |
795 | ||
796 | old_read_ptr = inw(ioaddr+READ_PTR); | |
797 | old_write_ptr = inw(ioaddr+WRITE_PTR); | |
798 | ||
799 | outb(SIRQ_dis|irqrmap[irq],ioaddr+SET_IRQ); | |
800 | ||
6aa20a22 | 801 | |
1da177e4 LT |
802 | status = scb_status(dev); |
803 | ||
804 | #if NET_DEBUG > 4 | |
805 | printk(KERN_DEBUG "%s: interrupt (status %x)\n", dev->name, status); | |
806 | #endif | |
807 | ||
808 | if (lp->started == (STARTED_CU | STARTED_RU)) { | |
809 | ||
810 | do { | |
811 | eexp_cmd_clear(dev); | |
812 | ||
813 | ack_cmd = SCB_ack(status); | |
814 | scb_command(dev, ack_cmd); | |
815 | outb(0,ioaddr+SIGNAL_CA); | |
816 | ||
817 | eexp_cmd_clear(dev); | |
818 | ||
819 | if (SCB_complete(status)) { | |
820 | if (!eexp_hw_lasttxstat(dev)) { | |
821 | printk("%s: tx interrupt but no status\n", dev->name); | |
822 | } | |
823 | } | |
6aa20a22 JG |
824 | |
825 | if (SCB_rxdframe(status)) | |
1da177e4 LT |
826 | eexp_hw_rx_pio(dev); |
827 | ||
828 | status = scb_status(dev); | |
829 | } while (status & 0xc000); | |
830 | ||
6aa20a22 | 831 | if (SCB_RUdead(status)) |
1da177e4 LT |
832 | { |
833 | printk(KERN_WARNING "%s: RU stopped: status %04x\n", | |
834 | dev->name,status); | |
835 | #if 0 | |
836 | printk(KERN_WARNING "%s: cur_rfd=%04x, cur_rbd=%04x\n", dev->name, lp->cur_rfd, lp->cur_rbd); | |
837 | outw(lp->cur_rfd, ioaddr+READ_PTR); | |
838 | printk(KERN_WARNING "%s: [%04x]\n", dev->name, inw(ioaddr+DATAPORT)); | |
839 | outw(lp->cur_rfd+6, ioaddr+READ_PTR); | |
840 | printk(KERN_WARNING "%s: rbd is %04x\n", dev->name, rbd= inw(ioaddr+DATAPORT)); | |
841 | outw(rbd, ioaddr+READ_PTR); | |
842 | printk(KERN_WARNING "%s: [%04x %04x] ", dev->name, inw(ioaddr+DATAPORT), inw(ioaddr+DATAPORT)); | |
843 | outw(rbd+8, ioaddr+READ_PTR); | |
844 | printk("[%04x]\n", inw(ioaddr+DATAPORT)); | |
845 | #endif | |
846 | lp->stats.rx_errors++; | |
847 | #if 1 | |
848 | eexp_hw_rxinit(dev); | |
849 | #else | |
850 | lp->cur_rfd = lp->first_rfd; | |
851 | #endif | |
852 | scb_wrrfa(dev, lp->rx_buf_start); | |
853 | scb_command(dev, SCB_RUstart); | |
854 | outb(0,ioaddr+SIGNAL_CA); | |
6aa20a22 | 855 | } |
1da177e4 | 856 | } else { |
6aa20a22 | 857 | if (status & 0x8000) |
1da177e4 LT |
858 | ack_cmd = eexp_start_irq(dev, status); |
859 | else | |
860 | ack_cmd = SCB_ack(status); | |
861 | scb_command(dev, ack_cmd); | |
862 | outb(0,ioaddr+SIGNAL_CA); | |
863 | } | |
864 | ||
865 | eexp_cmd_clear(dev); | |
866 | ||
6aa20a22 | 867 | outb(SIRQ_en|irqrmap[irq],ioaddr+SET_IRQ); |
1da177e4 | 868 | |
6aa20a22 | 869 | #if NET_DEBUG > 6 |
1da177e4 LT |
870 | printk("%s: leaving eexp_irq()\n", dev->name); |
871 | #endif | |
872 | outw(old_read_ptr, ioaddr+READ_PTR); | |
873 | outw(old_write_ptr, ioaddr+WRITE_PTR); | |
6aa20a22 | 874 | |
1da177e4 LT |
875 | spin_unlock(&lp->lock); |
876 | return IRQ_HANDLED; | |
877 | } | |
878 | ||
879 | /* | |
880 | * Hardware access functions | |
881 | */ | |
882 | ||
883 | /* | |
884 | * Set the cable type to use. | |
885 | */ | |
886 | ||
887 | static void eexp_hw_set_interface(struct net_device *dev) | |
888 | { | |
889 | unsigned char oldval = inb(dev->base_addr + 0x300e); | |
890 | oldval &= ~0x82; | |
891 | switch (dev->if_port) { | |
892 | case TPE: | |
893 | oldval |= 0x2; | |
894 | case BNC: | |
895 | oldval |= 0x80; | |
896 | break; | |
897 | } | |
898 | outb(oldval, dev->base_addr+0x300e); | |
899 | mdelay(20); | |
900 | } | |
901 | ||
902 | /* | |
903 | * Check all the receive buffers, and hand any received packets | |
904 | * to the upper levels. Basic sanity check on each frame | |
905 | * descriptor, though we don't bother trying to fix broken ones. | |
906 | */ | |
907 | ||
908 | static void eexp_hw_rx_pio(struct net_device *dev) | |
909 | { | |
910 | struct net_local *lp = netdev_priv(dev); | |
911 | unsigned short rx_block = lp->rx_ptr; | |
912 | unsigned short boguscount = lp->num_rx_bufs; | |
913 | unsigned short ioaddr = dev->base_addr; | |
914 | unsigned short status; | |
915 | ||
916 | #if NET_DEBUG > 6 | |
917 | printk(KERN_DEBUG "%s: eexp_hw_rx()\n", dev->name); | |
918 | #endif | |
919 | ||
920 | do { | |
921 | unsigned short rfd_cmd, rx_next, pbuf, pkt_len; | |
6aa20a22 | 922 | |
1da177e4 LT |
923 | outw(rx_block, ioaddr + READ_PTR); |
924 | status = inw(ioaddr + DATAPORT); | |
925 | ||
926 | if (FD_Done(status)) | |
927 | { | |
928 | rfd_cmd = inw(ioaddr + DATAPORT); | |
929 | rx_next = inw(ioaddr + DATAPORT); | |
930 | pbuf = inw(ioaddr + DATAPORT); | |
6aa20a22 | 931 | |
1da177e4 LT |
932 | outw(pbuf, ioaddr + READ_PTR); |
933 | pkt_len = inw(ioaddr + DATAPORT); | |
934 | ||
935 | if (rfd_cmd!=0x0000) | |
936 | { | |
937 | printk(KERN_WARNING "%s: rfd_cmd not zero:0x%04x\n", | |
938 | dev->name, rfd_cmd); | |
939 | continue; | |
940 | } | |
941 | else if (pbuf!=rx_block+0x16) | |
942 | { | |
6aa20a22 | 943 | printk(KERN_WARNING "%s: rfd and rbd out of sync 0x%04x 0x%04x\n", |
1da177e4 LT |
944 | dev->name, rx_block+0x16, pbuf); |
945 | continue; | |
946 | } | |
6aa20a22 | 947 | else if ((pkt_len & 0xc000)!=0xc000) |
1da177e4 LT |
948 | { |
949 | printk(KERN_WARNING "%s: EOF or F not set on received buffer (%04x)\n", | |
950 | dev->name, pkt_len & 0xc000); | |
951 | continue; | |
952 | } | |
6aa20a22 | 953 | else if (!FD_OK(status)) |
1da177e4 LT |
954 | { |
955 | lp->stats.rx_errors++; | |
956 | if (FD_CRC(status)) | |
957 | lp->stats.rx_crc_errors++; | |
958 | if (FD_Align(status)) | |
959 | lp->stats.rx_frame_errors++; | |
960 | if (FD_Resrc(status)) | |
961 | lp->stats.rx_fifo_errors++; | |
962 | if (FD_DMA(status)) | |
963 | lp->stats.rx_over_errors++; | |
964 | if (FD_Short(status)) | |
965 | lp->stats.rx_length_errors++; | |
966 | } | |
967 | else | |
968 | { | |
969 | struct sk_buff *skb; | |
970 | pkt_len &= 0x3fff; | |
971 | skb = dev_alloc_skb(pkt_len+16); | |
972 | if (skb == NULL) | |
973 | { | |
974 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet\n",dev->name); | |
975 | lp->stats.rx_dropped++; | |
976 | break; | |
977 | } | |
1da177e4 LT |
978 | skb_reserve(skb, 2); |
979 | outw(pbuf+10, ioaddr+READ_PTR); | |
980 | insw(ioaddr+DATAPORT, skb_put(skb,pkt_len),(pkt_len+1)>>1); | |
981 | skb->protocol = eth_type_trans(skb,dev); | |
982 | netif_rx(skb); | |
983 | dev->last_rx = jiffies; | |
984 | lp->stats.rx_packets++; | |
985 | lp->stats.rx_bytes += pkt_len; | |
986 | } | |
987 | outw(rx_block, ioaddr+WRITE_PTR); | |
988 | outw(0, ioaddr+DATAPORT); | |
989 | outw(0, ioaddr+DATAPORT); | |
990 | rx_block = rx_next; | |
991 | } | |
992 | } while (FD_Done(status) && boguscount--); | |
993 | lp->rx_ptr = rx_block; | |
994 | } | |
995 | ||
996 | /* | |
997 | * Hand a packet to the card for transmission | |
998 | * If we get here, we MUST have already checked | |
999 | * to make sure there is room in the transmit | |
1000 | * buffer region. | |
1001 | */ | |
1002 | ||
1003 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, | |
1004 | unsigned short len) | |
1005 | { | |
1006 | struct net_local *lp = netdev_priv(dev); | |
1007 | unsigned short ioaddr = dev->base_addr; | |
1008 | ||
1009 | if (LOCKUP16 || lp->width) { | |
1010 | /* Stop the CU so that there is no chance that it | |
1011 | jumps off to a bogus address while we are writing the | |
6aa20a22 | 1012 | pointer to the next transmit packet in 8-bit mode -- |
1da177e4 | 1013 | this eliminates the "CU wedged" errors in 8-bit mode. |
6aa20a22 | 1014 | (Zoltan Szilagyi 10-12-96) */ |
1da177e4 LT |
1015 | scb_command(dev, SCB_CUsuspend); |
1016 | outw(0xFFFF, ioaddr+SIGNAL_CA); | |
1017 | } | |
1018 | ||
1019 | outw(lp->tx_head, ioaddr + WRITE_PTR); | |
1020 | ||
1021 | outw(0x0000, ioaddr + DATAPORT); | |
1022 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); | |
1023 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); | |
1024 | outw(lp->tx_head+0x0e, ioaddr + DATAPORT); | |
1025 | ||
1026 | outw(0x0000, ioaddr + DATAPORT); | |
1027 | outw(0x0000, ioaddr + DATAPORT); | |
1028 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); | |
1029 | ||
1030 | outw(0x8000|len, ioaddr + DATAPORT); | |
1031 | outw(-1, ioaddr + DATAPORT); | |
1032 | outw(lp->tx_head+0x16, ioaddr + DATAPORT); | |
1033 | outw(0, ioaddr + DATAPORT); | |
1034 | ||
1035 | outsw(ioaddr + DATAPORT, buf, (len+1)>>1); | |
1036 | ||
1037 | outw(lp->tx_tail+0xc, ioaddr + WRITE_PTR); | |
1038 | outw(lp->tx_head, ioaddr + DATAPORT); | |
1039 | ||
1040 | dev->trans_start = jiffies; | |
1041 | lp->tx_tail = lp->tx_head; | |
1042 | if (lp->tx_head==TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) | |
1043 | lp->tx_head = TX_BUF_START; | |
1044 | else | |
1045 | lp->tx_head += TX_BUF_SIZE; | |
1046 | if (lp->tx_head != lp->tx_reap) | |
1047 | netif_wake_queue(dev); | |
6aa20a22 | 1048 | |
1da177e4 LT |
1049 | if (LOCKUP16 || lp->width) { |
1050 | /* Restart the CU so that the packet can actually | |
1051 | be transmitted. (Zoltan Szilagyi 10-12-96) */ | |
1052 | scb_command(dev, SCB_CUresume); | |
1053 | outw(0xFFFF, ioaddr+SIGNAL_CA); | |
1054 | } | |
1055 | ||
1056 | lp->stats.tx_packets++; | |
1057 | lp->last_tx = jiffies; | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * Sanity check the suspected EtherExpress card | |
1062 | * Read hardware address, reset card, size memory and initialize buffer | |
1063 | * memory pointers. These are held in dev->priv, in case someone has more | |
1064 | * than one card in a machine. | |
1065 | */ | |
1066 | ||
1067 | static int __init eexp_hw_probe(struct net_device *dev, unsigned short ioaddr) | |
1068 | { | |
1069 | unsigned short hw_addr[3]; | |
1070 | unsigned char buswidth; | |
1071 | unsigned int memory_size; | |
1072 | int i; | |
1073 | unsigned short xsum = 0; | |
1074 | struct net_local *lp = netdev_priv(dev); | |
1075 | ||
1076 | printk("%s: EtherExpress 16 at %#x ",dev->name,ioaddr); | |
1077 | ||
1078 | outb(ASIC_RST, ioaddr+EEPROM_Ctrl); | |
1079 | outb(0, ioaddr+EEPROM_Ctrl); | |
1080 | udelay(500); | |
1081 | outb(i586_RST, ioaddr+EEPROM_Ctrl); | |
1082 | ||
1083 | hw_addr[0] = eexp_hw_readeeprom(ioaddr,2); | |
1084 | hw_addr[1] = eexp_hw_readeeprom(ioaddr,3); | |
1085 | hw_addr[2] = eexp_hw_readeeprom(ioaddr,4); | |
1086 | ||
1087 | /* Standard Address or Compaq LTE Address */ | |
1088 | if (!((hw_addr[2]==0x00aa && ((hw_addr[1] & 0xff00)==0x0000)) || | |
6aa20a22 | 1089 | (hw_addr[2]==0x0080 && ((hw_addr[1] & 0xff00)==0x5F00)))) |
1da177e4 LT |
1090 | { |
1091 | printk(" rejected: invalid address %04x%04x%04x\n", | |
1092 | hw_addr[2],hw_addr[1],hw_addr[0]); | |
1093 | return -ENODEV; | |
1094 | } | |
1095 | ||
1096 | /* Calculate the EEPROM checksum. Carry on anyway if it's bad, | |
1097 | * though. | |
1098 | */ | |
1099 | for (i = 0; i < 64; i++) | |
1100 | xsum += eexp_hw_readeeprom(ioaddr, i); | |
1101 | if (xsum != 0xbaba) | |
1102 | printk(" (bad EEPROM xsum 0x%02x)", xsum); | |
1103 | ||
1104 | dev->base_addr = ioaddr; | |
1105 | for ( i=0 ; i<6 ; i++ ) | |
1106 | dev->dev_addr[i] = ((unsigned char *)hw_addr)[5-i]; | |
1107 | ||
1108 | { | |
1109 | static char irqmap[]={0, 9, 3, 4, 5, 10, 11, 0}; | |
1110 | unsigned short setupval = eexp_hw_readeeprom(ioaddr,0); | |
1111 | ||
1112 | /* Use the IRQ from EEPROM if none was given */ | |
1113 | if (!dev->irq) | |
1114 | dev->irq = irqmap[setupval>>13]; | |
1115 | ||
1116 | if (dev->if_port == 0xff) { | |
1117 | dev->if_port = !(setupval & 0x1000) ? AUI : | |
1118 | eexp_hw_readeeprom(ioaddr,5) & 0x1 ? TPE : BNC; | |
1119 | } | |
1120 | ||
1121 | buswidth = !((setupval & 0x400) >> 10); | |
1122 | } | |
1123 | ||
1124 | memset(lp, 0, sizeof(struct net_local)); | |
1125 | spin_lock_init(&lp->lock); | |
1126 | ||
6aa20a22 | 1127 | printk("(IRQ %d, %s connector, %d-bit bus", dev->irq, |
1da177e4 | 1128 | eexp_ifmap[dev->if_port], buswidth?8:16); |
6aa20a22 | 1129 | |
1da177e4 LT |
1130 | if (!request_region(dev->base_addr + 0x300e, 1, "EtherExpress")) |
1131 | return -EBUSY; | |
1132 | ||
1133 | eexp_hw_set_interface(dev); | |
6aa20a22 | 1134 | |
1da177e4 | 1135 | release_region(dev->base_addr + 0x300e, 1); |
6aa20a22 | 1136 | |
1da177e4 LT |
1137 | /* Find out how much RAM we have on the card */ |
1138 | outw(0, dev->base_addr + WRITE_PTR); | |
1139 | for (i = 0; i < 32768; i++) | |
1140 | outw(0, dev->base_addr + DATAPORT); | |
1141 | ||
1142 | for (memory_size = 0; memory_size < 64; memory_size++) | |
1143 | { | |
1144 | outw(memory_size<<10, dev->base_addr + READ_PTR); | |
1145 | if (inw(dev->base_addr+DATAPORT)) | |
1146 | break; | |
1147 | outw(memory_size<<10, dev->base_addr + WRITE_PTR); | |
1148 | outw(memory_size | 0x5000, dev->base_addr+DATAPORT); | |
1149 | outw(memory_size<<10, dev->base_addr + READ_PTR); | |
1150 | if (inw(dev->base_addr+DATAPORT) != (memory_size | 0x5000)) | |
1151 | break; | |
1152 | } | |
1153 | ||
1154 | /* Sort out the number of buffers. We may have 16, 32, 48 or 64k | |
1155 | * of RAM to play with. | |
1156 | */ | |
1157 | lp->num_tx_bufs = 4; | |
1158 | lp->rx_buf_end = 0x3ff6; | |
1159 | switch (memory_size) | |
1160 | { | |
1161 | case 64: | |
1162 | lp->rx_buf_end += 0x4000; | |
1163 | case 48: | |
1164 | lp->num_tx_bufs += 4; | |
1165 | lp->rx_buf_end += 0x4000; | |
1166 | case 32: | |
1167 | lp->rx_buf_end += 0x4000; | |
1168 | case 16: | |
1169 | printk(", %dk RAM)\n", memory_size); | |
1170 | break; | |
1171 | default: | |
1172 | printk(") bad memory size (%dk).\n", memory_size); | |
1173 | return -ENODEV; | |
1174 | break; | |
1175 | } | |
1176 | ||
1177 | lp->rx_buf_start = TX_BUF_START + (lp->num_tx_bufs*TX_BUF_SIZE); | |
1178 | lp->width = buswidth; | |
1179 | ||
1180 | dev->open = eexp_open; | |
1181 | dev->stop = eexp_close; | |
1182 | dev->hard_start_xmit = eexp_xmit; | |
1183 | dev->get_stats = eexp_stats; | |
1184 | dev->set_multicast_list = &eexp_set_multicast; | |
1185 | dev->tx_timeout = eexp_timeout; | |
1186 | dev->watchdog_timeo = 2*HZ; | |
b1fc5505 | 1187 | |
1188 | return register_netdev(dev); | |
1da177e4 LT |
1189 | } |
1190 | ||
1191 | /* | |
1192 | * Read a word from the EtherExpress on-board serial EEPROM. | |
1193 | * The EEPROM contains 64 words of 16 bits. | |
1194 | */ | |
1195 | static unsigned short __init eexp_hw_readeeprom(unsigned short ioaddr, | |
1196 | unsigned char location) | |
1197 | { | |
1198 | unsigned short cmd = 0x180|(location&0x7f); | |
1199 | unsigned short rval = 0,wval = EC_CS|i586_RST; | |
1200 | int i; | |
1201 | ||
1202 | outb(EC_CS|i586_RST,ioaddr+EEPROM_Ctrl); | |
1203 | for (i=0x100 ; i ; i>>=1 ) | |
1204 | { | |
1205 | if (cmd&i) | |
1206 | wval |= EC_Wr; | |
1207 | else | |
1208 | wval &= ~EC_Wr; | |
1209 | ||
1210 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1211 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1212 | eeprom_delay(); | |
1213 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1214 | eeprom_delay(); | |
1215 | } | |
1216 | wval &= ~EC_Wr; | |
1217 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1218 | for (i=0x8000 ; i ; i>>=1 ) | |
1219 | { | |
1220 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1221 | eeprom_delay(); | |
1222 | if (inb(ioaddr+EEPROM_Ctrl)&EC_Rd) | |
1223 | rval |= i; | |
1224 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1225 | eeprom_delay(); | |
1226 | } | |
1227 | wval &= ~EC_CS; | |
1228 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1229 | eeprom_delay(); | |
1230 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1231 | eeprom_delay(); | |
1232 | return rval; | |
1233 | } | |
1234 | ||
1235 | /* | |
1236 | * Reap tx buffers and return last transmit status. | |
1237 | * if ==0 then either: | |
1238 | * a) we're not transmitting anything, so why are we here? | |
1239 | * b) we've died. | |
1240 | * otherwise, Stat_Busy(return) means we've still got some packets | |
1241 | * to transmit, Stat_Done(return) means our buffers should be empty | |
1242 | * again | |
1243 | */ | |
1244 | ||
1245 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev) | |
1246 | { | |
1247 | struct net_local *lp = netdev_priv(dev); | |
1248 | unsigned short tx_block = lp->tx_reap; | |
1249 | unsigned short status; | |
1250 | ||
1251 | if (!netif_queue_stopped(dev) && lp->tx_head==lp->tx_reap) | |
1252 | return 0x0000; | |
1253 | ||
1254 | do | |
1255 | { | |
1256 | outw(tx_block & ~31, dev->base_addr + SM_PTR); | |
1257 | status = inw(dev->base_addr + SHADOW(tx_block)); | |
1258 | if (!Stat_Done(status)) | |
1259 | { | |
1260 | lp->tx_link = tx_block; | |
1261 | return status; | |
1262 | } | |
1263 | else | |
1264 | { | |
1265 | lp->last_tx_restart = 0; | |
1266 | lp->stats.collisions += Stat_NoColl(status); | |
1267 | if (!Stat_OK(status)) | |
1268 | { | |
1269 | char *whatsup = NULL; | |
1270 | lp->stats.tx_errors++; | |
6aa20a22 | 1271 | if (Stat_Abort(status)) |
1da177e4 LT |
1272 | lp->stats.tx_aborted_errors++; |
1273 | if (Stat_TNoCar(status)) { | |
1274 | whatsup = "aborted, no carrier"; | |
1275 | lp->stats.tx_carrier_errors++; | |
1276 | } | |
1277 | if (Stat_TNoCTS(status)) { | |
1278 | whatsup = "aborted, lost CTS"; | |
1279 | lp->stats.tx_carrier_errors++; | |
1280 | } | |
1281 | if (Stat_TNoDMA(status)) { | |
1282 | whatsup = "FIFO underran"; | |
1283 | lp->stats.tx_fifo_errors++; | |
1284 | } | |
1285 | if (Stat_TXColl(status)) { | |
1286 | whatsup = "aborted, too many collisions"; | |
1287 | lp->stats.tx_aborted_errors++; | |
1288 | } | |
1289 | if (whatsup) | |
1290 | printk(KERN_INFO "%s: transmit %s\n", | |
1291 | dev->name, whatsup); | |
1292 | } | |
1293 | else | |
1294 | lp->stats.tx_packets++; | |
1295 | } | |
1296 | if (tx_block == TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) | |
1297 | lp->tx_reap = tx_block = TX_BUF_START; | |
1298 | else | |
1299 | lp->tx_reap = tx_block += TX_BUF_SIZE; | |
1300 | netif_wake_queue(dev); | |
1301 | } | |
1302 | while (lp->tx_reap != lp->tx_head); | |
1303 | ||
1304 | lp->tx_link = lp->tx_tail + 0x08; | |
1305 | ||
1306 | return status; | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * This should never happen. It is called when some higher routine detects | |
1311 | * that the CU has stopped, to try to restart it from the last packet we knew | |
1312 | * we were working on, or the idle loop if we had finished for the time. | |
1313 | */ | |
1314 | ||
1315 | static void eexp_hw_txrestart(struct net_device *dev) | |
1316 | { | |
1317 | struct net_local *lp = netdev_priv(dev); | |
1318 | unsigned short ioaddr = dev->base_addr; | |
1319 | ||
1320 | lp->last_tx_restart = lp->tx_link; | |
1321 | scb_wrcbl(dev, lp->tx_link); | |
1322 | scb_command(dev, SCB_CUstart); | |
1323 | outb(0,ioaddr+SIGNAL_CA); | |
1324 | ||
1325 | { | |
1326 | unsigned short boguscount=50,failcount=5; | |
1327 | while (!scb_status(dev)) | |
1328 | { | |
1329 | if (!--boguscount) | |
1330 | { | |
1331 | if (--failcount) | |
1332 | { | |
1333 | printk(KERN_WARNING "%s: CU start timed out, status %04x, cmd %04x\n", dev->name, scb_status(dev), scb_rdcmd(dev)); | |
1334 | scb_wrcbl(dev, lp->tx_link); | |
1335 | scb_command(dev, SCB_CUstart); | |
1336 | outb(0,ioaddr+SIGNAL_CA); | |
1337 | boguscount = 100; | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | printk(KERN_WARNING "%s: Failed to restart CU, resetting board...\n",dev->name); | |
1342 | eexp_hw_init586(dev); | |
1343 | netif_wake_queue(dev); | |
1344 | return; | |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | /* | |
1352 | * Writes down the list of transmit buffers into card memory. Each | |
1353 | * entry consists of an 82586 transmit command, followed by a jump | |
1354 | * pointing to itself. When we want to transmit a packet, we write | |
1355 | * the data into the appropriate transmit buffer and then modify the | |
1356 | * preceding jump to point at the new transmit command. This means that | |
1357 | * the 586 command unit is continuously active. | |
1358 | */ | |
1359 | ||
1360 | static void eexp_hw_txinit(struct net_device *dev) | |
1361 | { | |
1362 | struct net_local *lp = netdev_priv(dev); | |
1363 | unsigned short tx_block = TX_BUF_START; | |
1364 | unsigned short curtbuf; | |
1365 | unsigned short ioaddr = dev->base_addr; | |
1366 | ||
1367 | for ( curtbuf=0 ; curtbuf<lp->num_tx_bufs ; curtbuf++ ) | |
1368 | { | |
1369 | outw(tx_block, ioaddr + WRITE_PTR); | |
1370 | ||
1371 | outw(0x0000, ioaddr + DATAPORT); | |
1372 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); | |
1373 | outw(tx_block+0x08, ioaddr + DATAPORT); | |
1374 | outw(tx_block+0x0e, ioaddr + DATAPORT); | |
1375 | ||
1376 | outw(0x0000, ioaddr + DATAPORT); | |
1377 | outw(0x0000, ioaddr + DATAPORT); | |
1378 | outw(tx_block+0x08, ioaddr + DATAPORT); | |
1379 | ||
1380 | outw(0x8000, ioaddr + DATAPORT); | |
1381 | outw(-1, ioaddr + DATAPORT); | |
1382 | outw(tx_block+0x16, ioaddr + DATAPORT); | |
1383 | outw(0x0000, ioaddr + DATAPORT); | |
1384 | ||
1385 | tx_block += TX_BUF_SIZE; | |
1386 | } | |
1387 | lp->tx_head = TX_BUF_START; | |
1388 | lp->tx_reap = TX_BUF_START; | |
1389 | lp->tx_tail = tx_block - TX_BUF_SIZE; | |
1390 | lp->tx_link = lp->tx_tail + 0x08; | |
1391 | lp->rx_buf_start = tx_block; | |
1392 | ||
1393 | } | |
1394 | ||
1395 | /* | |
1396 | * Write the circular list of receive buffer descriptors to card memory. | |
1397 | * The end of the list isn't marked, which means that the 82586 receive | |
1398 | * unit will loop until buffers become available (this avoids it giving us | |
1399 | * "out of resources" messages). | |
1400 | */ | |
1401 | ||
1402 | static void eexp_hw_rxinit(struct net_device *dev) | |
1403 | { | |
1404 | struct net_local *lp = netdev_priv(dev); | |
1405 | unsigned short rx_block = lp->rx_buf_start; | |
1406 | unsigned short ioaddr = dev->base_addr; | |
1407 | ||
1408 | lp->num_rx_bufs = 0; | |
1409 | lp->rx_first = lp->rx_ptr = rx_block; | |
1410 | do | |
1411 | { | |
1412 | lp->num_rx_bufs++; | |
1413 | ||
1414 | outw(rx_block, ioaddr + WRITE_PTR); | |
1415 | ||
1416 | outw(0, ioaddr + DATAPORT); outw(0, ioaddr+DATAPORT); | |
1417 | outw(rx_block + RX_BUF_SIZE, ioaddr+DATAPORT); | |
1418 | outw(0xffff, ioaddr+DATAPORT); | |
1419 | ||
1420 | outw(0x0000, ioaddr+DATAPORT); | |
1421 | outw(0xdead, ioaddr+DATAPORT); | |
1422 | outw(0xdead, ioaddr+DATAPORT); | |
1423 | outw(0xdead, ioaddr+DATAPORT); | |
1424 | outw(0xdead, ioaddr+DATAPORT); | |
1425 | outw(0xdead, ioaddr+DATAPORT); | |
1426 | outw(0xdead, ioaddr+DATAPORT); | |
1427 | ||
1428 | outw(0x0000, ioaddr+DATAPORT); | |
1429 | outw(rx_block + RX_BUF_SIZE + 0x16, ioaddr+DATAPORT); | |
1430 | outw(rx_block + 0x20, ioaddr+DATAPORT); | |
1431 | outw(0, ioaddr+DATAPORT); | |
1432 | outw(RX_BUF_SIZE-0x20, ioaddr+DATAPORT); | |
1433 | ||
1434 | lp->rx_last = rx_block; | |
1435 | rx_block += RX_BUF_SIZE; | |
1436 | } while (rx_block <= lp->rx_buf_end-RX_BUF_SIZE); | |
1437 | ||
1438 | ||
1439 | /* Make first Rx frame descriptor point to first Rx buffer | |
1440 | descriptor */ | |
1441 | outw(lp->rx_first + 6, ioaddr+WRITE_PTR); | |
1442 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); | |
1443 | ||
1444 | /* Close Rx frame descriptor ring */ | |
1445 | outw(lp->rx_last + 4, ioaddr+WRITE_PTR); | |
1446 | outw(lp->rx_first, ioaddr+DATAPORT); | |
6aa20a22 | 1447 | |
1da177e4 LT |
1448 | /* Close Rx buffer descriptor ring */ |
1449 | outw(lp->rx_last + 0x16 + 2, ioaddr+WRITE_PTR); | |
1450 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); | |
6aa20a22 | 1451 | |
1da177e4 LT |
1452 | } |
1453 | ||
1454 | /* | |
1455 | * Un-reset the 586, and start the configuration sequence. We don't wait for | |
1456 | * this to finish, but allow the interrupt handler to start the CU and RU for | |
1457 | * us. We can't start the receive/transmission system up before we know that | |
1458 | * the hardware is configured correctly. | |
1459 | */ | |
1460 | ||
1461 | static void eexp_hw_init586(struct net_device *dev) | |
1462 | { | |
1463 | struct net_local *lp = netdev_priv(dev); | |
1464 | unsigned short ioaddr = dev->base_addr; | |
1465 | int i; | |
1466 | ||
1467 | #if NET_DEBUG > 6 | |
1468 | printk("%s: eexp_hw_init586()\n", dev->name); | |
1469 | #endif | |
1470 | ||
1471 | lp->started = 0; | |
1472 | ||
1473 | set_loopback(dev); | |
1474 | ||
1475 | outb(SIRQ_dis|irqrmap[dev->irq],ioaddr+SET_IRQ); | |
1476 | ||
1477 | /* Download the startup code */ | |
1478 | outw(lp->rx_buf_end & ~31, ioaddr + SM_PTR); | |
1479 | outw(lp->width?0x0001:0x0000, ioaddr + 0x8006); | |
1480 | outw(0x0000, ioaddr + 0x8008); | |
1481 | outw(0x0000, ioaddr + 0x800a); | |
1482 | outw(0x0000, ioaddr + 0x800c); | |
1483 | outw(0x0000, ioaddr + 0x800e); | |
1484 | ||
1485 | for (i = 0; i < (sizeof(start_code)); i+=32) { | |
1486 | int j; | |
1487 | outw(i, ioaddr + SM_PTR); | |
1488 | for (j = 0; j < 16; j+=2) | |
1489 | outw(start_code[(i+j)/2], | |
1490 | ioaddr+0x4000+j); | |
1491 | for (j = 0; j < 16; j+=2) | |
1492 | outw(start_code[(i+j+16)/2], | |
1493 | ioaddr+0x8000+j); | |
1494 | } | |
1495 | ||
1496 | /* Do we want promiscuous mode or multicast? */ | |
1497 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); | |
1498 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); | |
6aa20a22 | 1499 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
1da177e4 LT |
1500 | ioaddr+SHADOW(CONF_PROMISC)); |
1501 | lp->was_promisc = dev->flags & IFF_PROMISC; | |
1502 | #if 0 | |
1503 | eexp_setup_filter(dev); | |
1504 | #endif | |
1505 | ||
1506 | /* Write our hardware address */ | |
1507 | outw(CONF_HWADDR & ~31, ioaddr+SM_PTR); | |
1508 | outw(((unsigned short *)dev->dev_addr)[0], ioaddr+SHADOW(CONF_HWADDR)); | |
6aa20a22 | 1509 | outw(((unsigned short *)dev->dev_addr)[1], |
1da177e4 LT |
1510 | ioaddr+SHADOW(CONF_HWADDR+2)); |
1511 | outw(((unsigned short *)dev->dev_addr)[2], | |
1512 | ioaddr+SHADOW(CONF_HWADDR+4)); | |
1513 | ||
1514 | eexp_hw_txinit(dev); | |
1515 | eexp_hw_rxinit(dev); | |
1516 | ||
1517 | outb(0,ioaddr+EEPROM_Ctrl); | |
1518 | mdelay(5); | |
1519 | ||
1520 | scb_command(dev, 0xf000); | |
1521 | outb(0,ioaddr+SIGNAL_CA); | |
1522 | ||
1523 | outw(0, ioaddr+SM_PTR); | |
1524 | ||
1525 | { | |
1526 | unsigned short rboguscount=50,rfailcount=5; | |
1527 | while (inw(ioaddr+0x4000)) | |
1528 | { | |
1529 | if (!--rboguscount) | |
1530 | { | |
1531 | printk(KERN_WARNING "%s: i82586 reset timed out, kicking...\n", | |
1532 | dev->name); | |
1533 | scb_command(dev, 0); | |
1534 | outb(0,ioaddr+SIGNAL_CA); | |
1535 | rboguscount = 100; | |
1536 | if (!--rfailcount) | |
1537 | { | |
1538 | printk(KERN_WARNING "%s: i82586 not responding, giving up.\n", | |
1539 | dev->name); | |
1540 | return; | |
1541 | } | |
1542 | } | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | scb_wrcbl(dev, CONF_LINK); | |
1547 | scb_command(dev, 0xf000|SCB_CUstart); | |
1548 | outb(0,ioaddr+SIGNAL_CA); | |
1549 | ||
1550 | { | |
1551 | unsigned short iboguscount=50,ifailcount=5; | |
1552 | while (!scb_status(dev)) | |
1553 | { | |
1554 | if (!--iboguscount) | |
1555 | { | |
1556 | if (--ifailcount) | |
1557 | { | |
1558 | printk(KERN_WARNING "%s: i82586 initialization timed out, status %04x, cmd %04x\n", | |
1559 | dev->name, scb_status(dev), scb_rdcmd(dev)); | |
1560 | scb_wrcbl(dev, CONF_LINK); | |
1561 | scb_command(dev, 0xf000|SCB_CUstart); | |
1562 | outb(0,ioaddr+SIGNAL_CA); | |
1563 | iboguscount = 100; | |
1564 | } | |
1565 | else | |
1566 | { | |
1567 | printk(KERN_WARNING "%s: Failed to initialize i82586, giving up.\n",dev->name); | |
1568 | return; | |
1569 | } | |
1570 | } | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | clear_loopback(dev); | |
1575 | outb(SIRQ_en|irqrmap[dev->irq],ioaddr+SET_IRQ); | |
1576 | ||
1577 | lp->init_time = jiffies; | |
1578 | #if NET_DEBUG > 6 | |
1579 | printk("%s: leaving eexp_hw_init586()\n", dev->name); | |
1580 | #endif | |
1581 | return; | |
1582 | } | |
1583 | ||
1584 | static void eexp_setup_filter(struct net_device *dev) | |
1585 | { | |
1586 | struct dev_mc_list *dmi = dev->mc_list; | |
1587 | unsigned short ioaddr = dev->base_addr; | |
1588 | int count = dev->mc_count; | |
1589 | int i; | |
1590 | if (count > 8) { | |
1591 | printk(KERN_INFO "%s: too many multicast addresses (%d)\n", | |
1592 | dev->name, count); | |
1593 | count = 8; | |
1594 | } | |
6aa20a22 | 1595 | |
1da177e4 LT |
1596 | outw(CONF_NR_MULTICAST & ~31, ioaddr+SM_PTR); |
1597 | outw(count, ioaddr+SHADOW(CONF_NR_MULTICAST)); | |
1598 | for (i = 0; i < count; i++) { | |
1599 | unsigned short *data = (unsigned short *)dmi->dmi_addr; | |
1600 | if (!dmi) { | |
1601 | printk(KERN_INFO "%s: too few multicast addresses\n", dev->name); | |
1602 | break; | |
1603 | } | |
1604 | if (dmi->dmi_addrlen != ETH_ALEN) { | |
1605 | printk(KERN_INFO "%s: invalid multicast address length given.\n", dev->name); | |
1606 | continue; | |
1607 | } | |
1608 | outw((CONF_MULTICAST+(6*i)) & ~31, ioaddr+SM_PTR); | |
1609 | outw(data[0], ioaddr+SHADOW(CONF_MULTICAST+(6*i))); | |
1610 | outw((CONF_MULTICAST+(6*i)+2) & ~31, ioaddr+SM_PTR); | |
1611 | outw(data[1], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+2)); | |
1612 | outw((CONF_MULTICAST+(6*i)+4) & ~31, ioaddr+SM_PTR); | |
1613 | outw(data[2], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+4)); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * Set or clear the multicast filter for this adaptor. | |
1619 | */ | |
1620 | static void | |
1621 | eexp_set_multicast(struct net_device *dev) | |
1622 | { | |
1623 | unsigned short ioaddr = dev->base_addr; | |
1624 | struct net_local *lp = netdev_priv(dev); | |
1625 | int kick = 0, i; | |
1626 | if ((dev->flags & IFF_PROMISC) != lp->was_promisc) { | |
1627 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); | |
1628 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); | |
1629 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), | |
1630 | ioaddr+SHADOW(CONF_PROMISC)); | |
1631 | lp->was_promisc = dev->flags & IFF_PROMISC; | |
1632 | kick = 1; | |
1633 | } | |
1634 | if (!(dev->flags & IFF_PROMISC)) { | |
1635 | eexp_setup_filter(dev); | |
1636 | if (lp->old_mc_count != dev->mc_count) { | |
1637 | kick = 1; | |
1638 | lp->old_mc_count = dev->mc_count; | |
1639 | } | |
1640 | } | |
1641 | if (kick) { | |
1642 | unsigned long oj; | |
1643 | scb_command(dev, SCB_CUsuspend); | |
1644 | outb(0, ioaddr+SIGNAL_CA); | |
1645 | outb(0, ioaddr+SIGNAL_CA); | |
1646 | #if 0 | |
1647 | printk("%s: waiting for CU to go suspended\n", dev->name); | |
1648 | #endif | |
1649 | oj = jiffies; | |
1650 | while ((SCB_CUstat(scb_status(dev)) == 2) && | |
1c0d6dcf | 1651 | (time_before(jiffies, oj + 2000))); |
1da177e4 LT |
1652 | if (SCB_CUstat(scb_status(dev)) == 2) |
1653 | printk("%s: warning, CU didn't stop\n", dev->name); | |
1654 | lp->started &= ~(STARTED_CU); | |
1655 | scb_wrcbl(dev, CONF_LINK); | |
1656 | scb_command(dev, SCB_CUstart); | |
1657 | outb(0, ioaddr+SIGNAL_CA); | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | ||
1662 | /* | |
1663 | * MODULE stuff | |
1664 | */ | |
1665 | ||
1666 | #ifdef MODULE | |
1667 | ||
1668 | #define EEXP_MAX_CARDS 4 /* max number of cards to support */ | |
1669 | ||
1670 | static struct net_device *dev_eexp[EEXP_MAX_CARDS]; | |
1671 | static int irq[EEXP_MAX_CARDS]; | |
1672 | static int io[EEXP_MAX_CARDS]; | |
1673 | ||
1674 | module_param_array(io, int, NULL, 0); | |
1675 | module_param_array(irq, int, NULL, 0); | |
1676 | MODULE_PARM_DESC(io, "EtherExpress 16 I/O base address(es)"); | |
1677 | MODULE_PARM_DESC(irq, "EtherExpress 16 IRQ number(s)"); | |
1678 | MODULE_LICENSE("GPL"); | |
1679 | ||
1680 | ||
1681 | /* Ideally the user would give us io=, irq= for every card. If any parameters | |
1682 | * are specified, we verify and then use them. If no parameters are given, we | |
1683 | * autoprobe for one card only. | |
1684 | */ | |
b1176b95 | 1685 | int __init init_module(void) |
1da177e4 LT |
1686 | { |
1687 | struct net_device *dev; | |
1688 | int this_dev, found = 0; | |
1689 | ||
1690 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { | |
1691 | dev = alloc_etherdev(sizeof(struct net_local)); | |
1692 | dev->irq = irq[this_dev]; | |
1693 | dev->base_addr = io[this_dev]; | |
1694 | if (io[this_dev] == 0) { | |
1695 | if (this_dev) | |
1696 | break; | |
1697 | printk(KERN_NOTICE "eexpress.c: Module autoprobe not recommended, give io=xx.\n"); | |
1698 | } | |
b1fc5505 | 1699 | if (do_express_probe(dev) == 0) { |
1da177e4 LT |
1700 | dev_eexp[this_dev] = dev; |
1701 | found++; | |
1702 | continue; | |
1703 | } | |
1704 | printk(KERN_WARNING "eexpress.c: Failed to register card at 0x%x.\n", io[this_dev]); | |
1705 | free_netdev(dev); | |
1706 | break; | |
1707 | } | |
1708 | if (found) | |
1709 | return 0; | |
1710 | return -ENXIO; | |
1711 | } | |
1712 | ||
afc8eb46 | 1713 | void __exit cleanup_module(void) |
1da177e4 LT |
1714 | { |
1715 | int this_dev; | |
1716 | ||
1717 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { | |
1718 | struct net_device *dev = dev_eexp[this_dev]; | |
1719 | if (dev) { | |
1720 | unregister_netdev(dev); | |
1721 | free_netdev(dev); | |
1722 | } | |
1723 | } | |
1724 | } | |
1725 | #endif | |
1726 | ||
1727 | /* | |
1728 | * Local Variables: | |
1729 | * c-file-style: "linux" | |
1730 | * tab-width: 8 | |
1731 | * End: | |
1732 | */ |