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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> | |
113aa838 | 11 | * Added the Compaq LTE Alan Cox <alan@lxorguk.ukuu.org.uk> |
726a6459 | 12 | * Added MCA support Adam Fritzler |
1da177e4 LT |
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 | { | |
1da177e4 LT |
138 | unsigned long last_tx; /* jiffies when last transmit started */ |
139 | unsigned long init_time; /* jiffies when eexp_hw_init586 called */ | |
140 | unsigned short rx_first; /* first rx buf, same as RX_BUF_START */ | |
141 | unsigned short rx_last; /* last rx buf */ | |
142 | unsigned short rx_ptr; /* first rx buf to look at */ | |
143 | unsigned short tx_head; /* next free tx buf */ | |
144 | unsigned short tx_reap; /* first in-use tx buf */ | |
145 | unsigned short tx_tail; /* previous tx buf to tx_head */ | |
146 | unsigned short tx_link; /* last known-executing tx buf */ | |
147 | unsigned short last_tx_restart; /* set to tx_link when we | |
148 | restart the CU */ | |
149 | unsigned char started; | |
150 | unsigned short rx_buf_start; | |
151 | unsigned short rx_buf_end; | |
152 | unsigned short num_tx_bufs; | |
153 | unsigned short num_rx_bufs; | |
154 | unsigned char width; /* 0 for 16bit, 1 for 8bit */ | |
155 | unsigned char was_promisc; | |
156 | unsigned char old_mc_count; | |
157 | spinlock_t lock; | |
158 | }; | |
159 | ||
160 | /* This is the code and data that is downloaded to the EtherExpress card's | |
161 | * memory at boot time. | |
162 | */ | |
163 | ||
164 | static unsigned short start_code[] = { | |
165 | /* 0x0000 */ | |
166 | 0x0001, /* ISCP: busy - cleared after reset */ | |
167 | 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */ | |
168 | ||
169 | 0x0000,0x0000, /* SCB: status, commands */ | |
170 | 0x0000,0x0000, /* links to first command block, | |
171 | first receive descriptor */ | |
172 | 0x0000,0x0000, /* CRC error, alignment error counts */ | |
173 | 0x0000,0x0000, /* out of resources, overrun error counts */ | |
174 | ||
175 | 0x0000,0x0000, /* pad */ | |
176 | 0x0000,0x0000, | |
177 | ||
178 | /* 0x20 -- start of 82586 CU program */ | |
179 | #define CONF_LINK 0x20 | |
6aa20a22 | 180 | 0x0000,Cmd_Config, |
1da177e4 LT |
181 | 0x0032, /* link to next command */ |
182 | 0x080c, /* 12 bytes follow : fifo threshold=8 */ | |
183 | 0x2e40, /* don't rx bad frames | |
184 | * SRDY/ARDY => ext. sync. : preamble len=8 | |
185 | * take addresses from data buffers | |
186 | * 6 bytes/address | |
187 | */ | |
188 | 0x6000, /* default backoff method & priority | |
189 | * interframe spacing = 0x60 */ | |
6aa20a22 | 190 | 0xf200, /* slot time=0x200 |
1da177e4 LT |
191 | * max collision retry = 0xf */ |
192 | #define CONF_PROMISC 0x2e | |
6aa20a22 | 193 | 0x0000, /* no HDLC : normal CRC : enable broadcast |
1da177e4 LT |
194 | * disable promiscuous/multicast modes */ |
195 | 0x003c, /* minimum frame length = 60 octets) */ | |
196 | ||
197 | 0x0000,Cmd_SetAddr, | |
198 | 0x003e, /* link to next command */ | |
199 | #define CONF_HWADDR 0x38 | |
200 | 0x0000,0x0000,0x0000, /* hardware address placed here */ | |
201 | ||
202 | 0x0000,Cmd_MCast, | |
203 | 0x0076, /* link to next command */ | |
204 | #define CONF_NR_MULTICAST 0x44 | |
46fa0617 | 205 | 0x0000, /* number of bytes in multicast address(es) */ |
1da177e4 LT |
206 | #define CONF_MULTICAST 0x46 |
207 | 0x0000, 0x0000, 0x0000, /* some addresses */ | |
208 | 0x0000, 0x0000, 0x0000, | |
209 | 0x0000, 0x0000, 0x0000, | |
210 | 0x0000, 0x0000, 0x0000, | |
211 | 0x0000, 0x0000, 0x0000, | |
212 | 0x0000, 0x0000, 0x0000, | |
213 | 0x0000, 0x0000, 0x0000, | |
214 | 0x0000, 0x0000, 0x0000, | |
215 | ||
216 | #define CONF_DIAG_RESULT 0x76 | |
217 | 0x0000, Cmd_Diag, | |
218 | 0x007c, /* link to next command */ | |
219 | ||
220 | 0x0000,Cmd_TDR|Cmd_INT, | |
221 | 0x0084, | |
222 | #define CONF_TDR_RESULT 0x82 | |
223 | 0x0000, | |
224 | ||
225 | 0x0000,Cmd_END|Cmd_Nop, /* end of configure sequence */ | |
226 | 0x0084 /* dummy link */ | |
227 | }; | |
228 | ||
229 | /* maps irq number to EtherExpress magic value */ | |
230 | static char irqrmap[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 }; | |
231 | ||
232 | #ifdef CONFIG_MCA_LEGACY | |
233 | /* mapping of the first four bits of the second POS register */ | |
234 | static unsigned short mca_iomap[] = { | |
235 | 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200, | |
236 | 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300 | |
237 | }; | |
238 | /* bits 5-7 of the second POS register */ | |
239 | static char mca_irqmap[] = { 12, 9, 3, 4, 5, 10, 11, 15 }; | |
6aa20a22 | 240 | #endif |
1da177e4 LT |
241 | |
242 | /* | |
243 | * Prototypes for Linux interface | |
244 | */ | |
245 | ||
246 | static int eexp_open(struct net_device *dev); | |
247 | static int eexp_close(struct net_device *dev); | |
248 | static void eexp_timeout(struct net_device *dev); | |
61357325 SH |
249 | static netdev_tx_t eexp_xmit(struct sk_buff *buf, |
250 | struct net_device *dev); | |
1da177e4 | 251 | |
7d12e780 | 252 | static irqreturn_t eexp_irq(int irq, void *dev_addr); |
1da177e4 LT |
253 | static void eexp_set_multicast(struct net_device *dev); |
254 | ||
255 | /* | |
256 | * Prototypes for hardware access functions | |
257 | */ | |
258 | ||
259 | static void eexp_hw_rx_pio(struct net_device *dev); | |
260 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, | |
261 | unsigned short len); | |
262 | static int eexp_hw_probe(struct net_device *dev,unsigned short ioaddr); | |
263 | static unsigned short eexp_hw_readeeprom(unsigned short ioaddr, | |
264 | unsigned char location); | |
265 | ||
266 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev); | |
267 | static void eexp_hw_txrestart(struct net_device *dev); | |
268 | ||
269 | static void eexp_hw_txinit (struct net_device *dev); | |
270 | static void eexp_hw_rxinit (struct net_device *dev); | |
271 | ||
272 | static void eexp_hw_init586 (struct net_device *dev); | |
273 | static void eexp_setup_filter (struct net_device *dev); | |
274 | ||
275 | static char *eexp_ifmap[]={"AUI", "BNC", "RJ45"}; | |
276 | enum eexp_iftype {AUI=0, BNC=1, TPE=2}; | |
277 | ||
278 | #define STARTED_RU 2 | |
279 | #define STARTED_CU 1 | |
280 | ||
281 | /* | |
282 | * Primitive hardware access functions. | |
283 | */ | |
284 | ||
285 | static inline unsigned short scb_status(struct net_device *dev) | |
286 | { | |
287 | return inw(dev->base_addr + 0xc008); | |
288 | } | |
289 | ||
290 | static inline unsigned short scb_rdcmd(struct net_device *dev) | |
291 | { | |
292 | return inw(dev->base_addr + 0xc00a); | |
293 | } | |
294 | ||
295 | static inline void scb_command(struct net_device *dev, unsigned short cmd) | |
296 | { | |
297 | outw(cmd, dev->base_addr + 0xc00a); | |
298 | } | |
299 | ||
300 | static inline void scb_wrcbl(struct net_device *dev, unsigned short val) | |
301 | { | |
302 | outw(val, dev->base_addr + 0xc00c); | |
303 | } | |
304 | ||
305 | static inline void scb_wrrfa(struct net_device *dev, unsigned short val) | |
306 | { | |
307 | outw(val, dev->base_addr + 0xc00e); | |
308 | } | |
309 | ||
310 | static inline void set_loopback(struct net_device *dev) | |
311 | { | |
312 | outb(inb(dev->base_addr + Config) | 2, dev->base_addr + Config); | |
313 | } | |
314 | ||
315 | static inline void clear_loopback(struct net_device *dev) | |
316 | { | |
317 | outb(inb(dev->base_addr + Config) & ~2, dev->base_addr + Config); | |
318 | } | |
319 | ||
320 | static inline unsigned short int SHADOW(short int addr) | |
321 | { | |
322 | addr &= 0x1f; | |
323 | if (addr > 0xf) addr += 0x3ff0; | |
324 | return addr + 0x4000; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Linux interface | |
329 | */ | |
330 | ||
331 | /* | |
332 | * checks for presence of EtherExpress card | |
333 | */ | |
334 | ||
335 | static int __init do_express_probe(struct net_device *dev) | |
336 | { | |
337 | unsigned short *port; | |
338 | static unsigned short ports[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 }; | |
339 | unsigned short ioaddr = dev->base_addr; | |
340 | int dev_irq = dev->irq; | |
341 | int err; | |
342 | ||
1da177e4 LT |
343 | dev->if_port = 0xff; /* not set */ |
344 | ||
345 | #ifdef CONFIG_MCA_LEGACY | |
346 | if (MCA_bus) { | |
347 | int slot = 0; | |
348 | ||
349 | /* | |
350 | * Only find one card at a time. Subsequent calls | |
351 | * will find others, however, proper multicard MCA | |
352 | * probing and setup can't be done with the | |
353 | * old-style Space.c init routines. -- ASF | |
354 | */ | |
355 | while (slot != MCA_NOTFOUND) { | |
356 | int pos0, pos1; | |
6aa20a22 | 357 | |
1da177e4 LT |
358 | slot = mca_find_unused_adapter(0x628B, slot); |
359 | if (slot == MCA_NOTFOUND) | |
360 | break; | |
361 | ||
362 | pos0 = mca_read_stored_pos(slot, 2); | |
363 | pos1 = mca_read_stored_pos(slot, 3); | |
364 | ioaddr = mca_iomap[pos1&0xf]; | |
365 | ||
366 | dev->irq = mca_irqmap[(pos1>>4)&0x7]; | |
6aa20a22 | 367 | |
1da177e4 LT |
368 | /* |
369 | * XXX: Transciever selection is done | |
6aa20a22 | 370 | * differently on the MCA version. |
1da177e4 LT |
371 | * How to get it to select something |
372 | * other than external/AUI is currently | |
373 | * unknown. This code is just for looks. -- ASF | |
374 | */ | |
375 | if ((pos0 & 0x7) == 0x1) | |
376 | dev->if_port = AUI; | |
377 | else if ((pos0 & 0x7) == 0x5) { | |
378 | if (pos1 & 0x80) | |
379 | dev->if_port = BNC; | |
380 | else | |
381 | dev->if_port = TPE; | |
382 | } | |
383 | ||
384 | mca_set_adapter_name(slot, "Intel EtherExpress 16 MCA"); | |
385 | mca_set_adapter_procfn(slot, NULL, dev); | |
386 | mca_mark_as_used(slot); | |
387 | ||
388 | break; | |
389 | } | |
390 | } | |
391 | #endif | |
392 | if (ioaddr&0xfe00) { | |
393 | if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) | |
394 | return -EBUSY; | |
395 | err = eexp_hw_probe(dev,ioaddr); | |
396 | release_region(ioaddr, EEXP_IO_EXTENT); | |
397 | return err; | |
398 | } else if (ioaddr) | |
399 | return -ENXIO; | |
400 | ||
401 | for (port=&ports[0] ; *port ; port++ ) | |
402 | { | |
403 | unsigned short sum = 0; | |
404 | int i; | |
405 | if (!request_region(*port, EEXP_IO_EXTENT, "EtherExpress")) | |
406 | continue; | |
407 | for ( i=0 ; i<4 ; i++ ) | |
408 | { | |
409 | unsigned short t; | |
410 | t = inb(*port + ID_PORT); | |
411 | sum |= (t>>4) << ((t & 0x03)<<2); | |
412 | } | |
413 | if (sum==0xbaba && !eexp_hw_probe(dev,*port)) { | |
414 | release_region(*port, EEXP_IO_EXTENT); | |
415 | return 0; | |
416 | } | |
417 | release_region(*port, EEXP_IO_EXTENT); | |
418 | dev->irq = dev_irq; | |
419 | } | |
420 | return -ENODEV; | |
421 | } | |
422 | ||
423 | #ifndef MODULE | |
424 | struct net_device * __init express_probe(int unit) | |
425 | { | |
426 | struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); | |
427 | int err; | |
428 | ||
429 | if (!dev) | |
430 | return ERR_PTR(-ENOMEM); | |
431 | ||
432 | sprintf(dev->name, "eth%d", unit); | |
433 | netdev_boot_setup_check(dev); | |
434 | ||
435 | err = do_express_probe(dev); | |
b1fc5505 HX |
436 | if (!err) |
437 | return dev; | |
1da177e4 LT |
438 | free_netdev(dev); |
439 | return ERR_PTR(err); | |
440 | } | |
441 | #endif | |
442 | ||
443 | /* | |
444 | * open and initialize the adapter, ready for use | |
445 | */ | |
446 | ||
447 | static int eexp_open(struct net_device *dev) | |
448 | { | |
449 | int ret; | |
450 | unsigned short ioaddr = dev->base_addr; | |
451 | struct net_local *lp = netdev_priv(dev); | |
452 | ||
453 | #if NET_DEBUG > 6 | |
454 | printk(KERN_DEBUG "%s: eexp_open()\n", dev->name); | |
455 | #endif | |
456 | ||
457 | if (!dev->irq || !irqrmap[dev->irq]) | |
458 | return -ENXIO; | |
459 | ||
28fc1f5a JG |
460 | ret = request_irq(dev->irq, &eexp_irq, 0, dev->name, dev); |
461 | if (ret) | |
462 | return ret; | |
1da177e4 LT |
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 | ||
1da177e4 LT |
535 | /* |
536 | * This gets called when a higher level thinks we are broken. Check that | |
537 | * nothing has become jammed in the CU. | |
538 | */ | |
539 | ||
540 | static void unstick_cu(struct net_device *dev) | |
541 | { | |
542 | struct net_local *lp = netdev_priv(dev); | |
543 | unsigned short ioaddr = dev->base_addr; | |
544 | ||
545 | if (lp->started) | |
546 | { | |
d7ef45b0 | 547 | if (time_after(jiffies, dev->trans_start + 50)) |
1da177e4 LT |
548 | { |
549 | if (lp->tx_link==lp->last_tx_restart) | |
550 | { | |
551 | unsigned short boguscount=200,rsst; | |
552 | printk(KERN_WARNING "%s: Retransmit timed out, status %04x, resetting...\n", | |
553 | dev->name, scb_status(dev)); | |
554 | eexp_hw_txinit(dev); | |
555 | lp->last_tx_restart = 0; | |
556 | scb_wrcbl(dev, lp->tx_link); | |
557 | scb_command(dev, SCB_CUstart); | |
558 | outb(0,ioaddr+SIGNAL_CA); | |
559 | while (!SCB_complete(rsst=scb_status(dev))) | |
560 | { | |
561 | if (!--boguscount) | |
562 | { | |
563 | boguscount=200; | |
564 | printk(KERN_WARNING "%s: Reset timed out status %04x, retrying...\n", | |
565 | dev->name,rsst); | |
566 | scb_wrcbl(dev, lp->tx_link); | |
567 | scb_command(dev, SCB_CUstart); | |
568 | outb(0,ioaddr+SIGNAL_CA); | |
569 | } | |
570 | } | |
571 | netif_wake_queue(dev); | |
572 | } | |
573 | else | |
574 | { | |
575 | unsigned short status = scb_status(dev); | |
576 | if (SCB_CUdead(status)) | |
577 | { | |
578 | unsigned short txstatus = eexp_hw_lasttxstat(dev); | |
579 | printk(KERN_WARNING "%s: Transmit timed out, CU not active status %04x %04x, restarting...\n", | |
580 | dev->name, status, txstatus); | |
581 | eexp_hw_txrestart(dev); | |
582 | } | |
583 | else | |
584 | { | |
585 | unsigned short txstatus = eexp_hw_lasttxstat(dev); | |
586 | if (netif_queue_stopped(dev) && !txstatus) | |
587 | { | |
588 | printk(KERN_WARNING "%s: CU wedged, status %04x %04x, resetting...\n", | |
589 | dev->name,status,txstatus); | |
590 | eexp_hw_init586(dev); | |
591 | netif_wake_queue(dev); | |
592 | } | |
593 | else | |
594 | { | |
595 | printk(KERN_WARNING "%s: transmit timed out\n", dev->name); | |
596 | } | |
597 | } | |
598 | } | |
599 | } | |
600 | } | |
601 | else | |
602 | { | |
d7ef45b0 | 603 | if (time_after(jiffies, lp->init_time + 10)) |
1da177e4 LT |
604 | { |
605 | unsigned short status = scb_status(dev); | |
606 | printk(KERN_WARNING "%s: i82586 startup timed out, status %04x, resetting...\n", | |
607 | dev->name, status); | |
608 | eexp_hw_init586(dev); | |
609 | netif_wake_queue(dev); | |
610 | } | |
611 | } | |
612 | } | |
613 | ||
614 | static void eexp_timeout(struct net_device *dev) | |
615 | { | |
616 | struct net_local *lp = netdev_priv(dev); | |
617 | #ifdef CONFIG_SMP | |
618 | unsigned long flags; | |
619 | #endif | |
620 | int status; | |
6aa20a22 | 621 | |
1da177e4 LT |
622 | disable_irq(dev->irq); |
623 | ||
624 | /* | |
625 | * Best would be to use synchronize_irq(); spin_lock() here | |
626 | * lets make it work first.. | |
627 | */ | |
6aa20a22 | 628 | |
1da177e4 LT |
629 | #ifdef CONFIG_SMP |
630 | spin_lock_irqsave(&lp->lock, flags); | |
631 | #endif | |
632 | ||
633 | status = scb_status(dev); | |
634 | unstick_cu(dev); | |
635 | printk(KERN_INFO "%s: transmit timed out, %s?\n", dev->name, | |
636 | (SCB_complete(status)?"lost interrupt": | |
637 | "board on fire")); | |
09f75cd7 | 638 | dev->stats.tx_errors++; |
1da177e4 LT |
639 | lp->last_tx = jiffies; |
640 | if (!SCB_complete(status)) { | |
641 | scb_command(dev, SCB_CUabort); | |
642 | outb(0,dev->base_addr+SIGNAL_CA); | |
643 | } | |
6aa20a22 | 644 | netif_wake_queue(dev); |
1da177e4 LT |
645 | #ifdef CONFIG_SMP |
646 | spin_unlock_irqrestore(&lp->lock, flags); | |
647 | #endif | |
648 | } | |
649 | ||
650 | /* | |
651 | * Called to transmit a packet, or to allow us to right ourselves | |
652 | * if the kernel thinks we've died. | |
653 | */ | |
61357325 | 654 | static netdev_tx_t eexp_xmit(struct sk_buff *buf, struct net_device *dev) |
1da177e4 | 655 | { |
1da177e4 LT |
656 | short length = buf->len; |
657 | #ifdef CONFIG_SMP | |
0e6f7329 | 658 | struct net_local *lp = netdev_priv(dev); |
1da177e4 LT |
659 | unsigned long flags; |
660 | #endif | |
661 | ||
662 | #if NET_DEBUG > 6 | |
663 | printk(KERN_DEBUG "%s: eexp_xmit()\n", dev->name); | |
664 | #endif | |
665 | ||
666 | if (buf->len < ETH_ZLEN) { | |
5b057c6b | 667 | if (skb_padto(buf, ETH_ZLEN)) |
6ed10654 | 668 | return NETDEV_TX_OK; |
1da177e4 LT |
669 | length = ETH_ZLEN; |
670 | } | |
671 | ||
672 | disable_irq(dev->irq); | |
673 | ||
674 | /* | |
675 | * Best would be to use synchronize_irq(); spin_lock() here | |
676 | * lets make it work first.. | |
677 | */ | |
6aa20a22 | 678 | |
1da177e4 LT |
679 | #ifdef CONFIG_SMP |
680 | spin_lock_irqsave(&lp->lock, flags); | |
681 | #endif | |
6aa20a22 | 682 | |
1da177e4 LT |
683 | { |
684 | unsigned short *data = (unsigned short *)buf->data; | |
685 | ||
09f75cd7 | 686 | dev->stats.tx_bytes += length; |
1da177e4 LT |
687 | |
688 | eexp_hw_tx_pio(dev,data,length); | |
689 | } | |
690 | dev_kfree_skb(buf); | |
691 | #ifdef CONFIG_SMP | |
692 | spin_unlock_irqrestore(&lp->lock, flags); | |
693 | #endif | |
694 | enable_irq(dev->irq); | |
6ed10654 | 695 | return NETDEV_TX_OK; |
1da177e4 LT |
696 | } |
697 | ||
1da177e4 LT |
698 | /* |
699 | * Handle an EtherExpress interrupt | |
700 | * If we've finished initializing, start the RU and CU up. | |
701 | * If we've already started, reap tx buffers, handle any received packets, | |
702 | * check to make sure we've not become wedged. | |
703 | */ | |
704 | ||
705 | static unsigned short eexp_start_irq(struct net_device *dev, | |
706 | unsigned short status) | |
707 | { | |
708 | unsigned short ack_cmd = SCB_ack(status); | |
709 | struct net_local *lp = netdev_priv(dev); | |
710 | unsigned short ioaddr = dev->base_addr; | |
711 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_CU)) { | |
712 | short diag_status, tdr_status; | |
713 | while (SCB_CUstat(status)==2) | |
714 | status = scb_status(dev); | |
715 | #if NET_DEBUG > 4 | |
716 | printk("%s: CU went non-active (status %04x)\n", | |
717 | dev->name, status); | |
718 | #endif | |
719 | ||
720 | outw(CONF_DIAG_RESULT & ~31, ioaddr + SM_PTR); | |
721 | diag_status = inw(ioaddr + SHADOW(CONF_DIAG_RESULT)); | |
722 | if (diag_status & 1<<11) { | |
6aa20a22 | 723 | printk(KERN_WARNING "%s: 82586 failed self-test\n", |
1da177e4 LT |
724 | dev->name); |
725 | } else if (!(diag_status & 1<<13)) { | |
726 | printk(KERN_WARNING "%s: 82586 self-test failed to complete\n", dev->name); | |
727 | } | |
728 | ||
729 | outw(CONF_TDR_RESULT & ~31, ioaddr + SM_PTR); | |
730 | tdr_status = inw(ioaddr + SHADOW(CONF_TDR_RESULT)); | |
731 | if (tdr_status & (TDR_SHORT|TDR_OPEN)) { | |
732 | 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 | 733 | } |
1da177e4 LT |
734 | else if (tdr_status & TDR_XCVRPROBLEM) { |
735 | printk(KERN_WARNING "%s: TDR reports transceiver problem\n", dev->name); | |
736 | } | |
737 | else if (tdr_status & TDR_LINKOK) { | |
738 | #if NET_DEBUG > 4 | |
739 | printk(KERN_DEBUG "%s: TDR reports link OK\n", dev->name); | |
740 | #endif | |
741 | } else { | |
742 | printk("%s: TDR is ga-ga (status %04x)\n", dev->name, | |
743 | tdr_status); | |
744 | } | |
6aa20a22 | 745 | |
1da177e4 LT |
746 | lp->started |= STARTED_CU; |
747 | scb_wrcbl(dev, lp->tx_link); | |
748 | /* if the RU isn't running, start it now */ | |
749 | if (!(lp->started & STARTED_RU)) { | |
750 | ack_cmd |= SCB_RUstart; | |
751 | scb_wrrfa(dev, lp->rx_buf_start); | |
752 | lp->rx_ptr = lp->rx_buf_start; | |
753 | lp->started |= STARTED_RU; | |
754 | } | |
755 | ack_cmd |= SCB_CUstart | 0x2000; | |
756 | } | |
757 | ||
6aa20a22 | 758 | if ((dev->flags & IFF_UP) && !(lp->started & STARTED_RU) && SCB_RUstat(status)==4) |
1da177e4 LT |
759 | lp->started|=STARTED_RU; |
760 | ||
761 | return ack_cmd; | |
762 | } | |
763 | ||
764 | static void eexp_cmd_clear(struct net_device *dev) | |
765 | { | |
766 | unsigned long int oldtime = jiffies; | |
1c0d6dcf | 767 | while (scb_rdcmd(dev) && (time_before(jiffies, oldtime + 10))); |
1da177e4 LT |
768 | if (scb_rdcmd(dev)) { |
769 | printk("%s: command didn't clear\n", dev->name); | |
770 | } | |
771 | } | |
6aa20a22 | 772 | |
28fc1f5a | 773 | static irqreturn_t eexp_irq(int dummy, void *dev_info) |
1da177e4 LT |
774 | { |
775 | struct net_device *dev = dev_info; | |
776 | struct net_local *lp; | |
777 | unsigned short ioaddr,status,ack_cmd; | |
778 | unsigned short old_read_ptr, old_write_ptr; | |
779 | ||
1da177e4 LT |
780 | lp = netdev_priv(dev); |
781 | ioaddr = dev->base_addr; | |
782 | ||
783 | spin_lock(&lp->lock); | |
784 | ||
785 | old_read_ptr = inw(ioaddr+READ_PTR); | |
786 | old_write_ptr = inw(ioaddr+WRITE_PTR); | |
787 | ||
cba0516d | 788 | outb(SIRQ_dis|irqrmap[dev->irq], ioaddr+SET_IRQ); |
6aa20a22 | 789 | |
1da177e4 LT |
790 | status = scb_status(dev); |
791 | ||
792 | #if NET_DEBUG > 4 | |
793 | printk(KERN_DEBUG "%s: interrupt (status %x)\n", dev->name, status); | |
794 | #endif | |
795 | ||
796 | if (lp->started == (STARTED_CU | STARTED_RU)) { | |
797 | ||
798 | do { | |
799 | eexp_cmd_clear(dev); | |
800 | ||
801 | ack_cmd = SCB_ack(status); | |
802 | scb_command(dev, ack_cmd); | |
803 | outb(0,ioaddr+SIGNAL_CA); | |
804 | ||
805 | eexp_cmd_clear(dev); | |
806 | ||
807 | if (SCB_complete(status)) { | |
808 | if (!eexp_hw_lasttxstat(dev)) { | |
809 | printk("%s: tx interrupt but no status\n", dev->name); | |
810 | } | |
811 | } | |
6aa20a22 JG |
812 | |
813 | if (SCB_rxdframe(status)) | |
1da177e4 LT |
814 | eexp_hw_rx_pio(dev); |
815 | ||
816 | status = scb_status(dev); | |
817 | } while (status & 0xc000); | |
818 | ||
6aa20a22 | 819 | if (SCB_RUdead(status)) |
1da177e4 LT |
820 | { |
821 | printk(KERN_WARNING "%s: RU stopped: status %04x\n", | |
822 | dev->name,status); | |
823 | #if 0 | |
824 | printk(KERN_WARNING "%s: cur_rfd=%04x, cur_rbd=%04x\n", dev->name, lp->cur_rfd, lp->cur_rbd); | |
825 | outw(lp->cur_rfd, ioaddr+READ_PTR); | |
826 | printk(KERN_WARNING "%s: [%04x]\n", dev->name, inw(ioaddr+DATAPORT)); | |
827 | outw(lp->cur_rfd+6, ioaddr+READ_PTR); | |
828 | printk(KERN_WARNING "%s: rbd is %04x\n", dev->name, rbd= inw(ioaddr+DATAPORT)); | |
829 | outw(rbd, ioaddr+READ_PTR); | |
830 | printk(KERN_WARNING "%s: [%04x %04x] ", dev->name, inw(ioaddr+DATAPORT), inw(ioaddr+DATAPORT)); | |
831 | outw(rbd+8, ioaddr+READ_PTR); | |
832 | printk("[%04x]\n", inw(ioaddr+DATAPORT)); | |
833 | #endif | |
09f75cd7 | 834 | dev->stats.rx_errors++; |
1da177e4 LT |
835 | #if 1 |
836 | eexp_hw_rxinit(dev); | |
837 | #else | |
838 | lp->cur_rfd = lp->first_rfd; | |
839 | #endif | |
840 | scb_wrrfa(dev, lp->rx_buf_start); | |
841 | scb_command(dev, SCB_RUstart); | |
842 | outb(0,ioaddr+SIGNAL_CA); | |
6aa20a22 | 843 | } |
1da177e4 | 844 | } else { |
6aa20a22 | 845 | if (status & 0x8000) |
1da177e4 LT |
846 | ack_cmd = eexp_start_irq(dev, status); |
847 | else | |
848 | ack_cmd = SCB_ack(status); | |
849 | scb_command(dev, ack_cmd); | |
850 | outb(0,ioaddr+SIGNAL_CA); | |
851 | } | |
852 | ||
853 | eexp_cmd_clear(dev); | |
854 | ||
cba0516d | 855 | outb(SIRQ_en|irqrmap[dev->irq], ioaddr+SET_IRQ); |
1da177e4 | 856 | |
6aa20a22 | 857 | #if NET_DEBUG > 6 |
1da177e4 LT |
858 | printk("%s: leaving eexp_irq()\n", dev->name); |
859 | #endif | |
860 | outw(old_read_ptr, ioaddr+READ_PTR); | |
861 | outw(old_write_ptr, ioaddr+WRITE_PTR); | |
6aa20a22 | 862 | |
1da177e4 LT |
863 | spin_unlock(&lp->lock); |
864 | return IRQ_HANDLED; | |
865 | } | |
866 | ||
867 | /* | |
868 | * Hardware access functions | |
869 | */ | |
870 | ||
871 | /* | |
872 | * Set the cable type to use. | |
873 | */ | |
874 | ||
875 | static void eexp_hw_set_interface(struct net_device *dev) | |
876 | { | |
877 | unsigned char oldval = inb(dev->base_addr + 0x300e); | |
878 | oldval &= ~0x82; | |
879 | switch (dev->if_port) { | |
880 | case TPE: | |
881 | oldval |= 0x2; | |
882 | case BNC: | |
883 | oldval |= 0x80; | |
884 | break; | |
885 | } | |
886 | outb(oldval, dev->base_addr+0x300e); | |
887 | mdelay(20); | |
888 | } | |
889 | ||
890 | /* | |
891 | * Check all the receive buffers, and hand any received packets | |
892 | * to the upper levels. Basic sanity check on each frame | |
893 | * descriptor, though we don't bother trying to fix broken ones. | |
894 | */ | |
895 | ||
896 | static void eexp_hw_rx_pio(struct net_device *dev) | |
897 | { | |
898 | struct net_local *lp = netdev_priv(dev); | |
899 | unsigned short rx_block = lp->rx_ptr; | |
900 | unsigned short boguscount = lp->num_rx_bufs; | |
901 | unsigned short ioaddr = dev->base_addr; | |
902 | unsigned short status; | |
903 | ||
904 | #if NET_DEBUG > 6 | |
905 | printk(KERN_DEBUG "%s: eexp_hw_rx()\n", dev->name); | |
906 | #endif | |
907 | ||
908 | do { | |
909 | unsigned short rfd_cmd, rx_next, pbuf, pkt_len; | |
6aa20a22 | 910 | |
1da177e4 LT |
911 | outw(rx_block, ioaddr + READ_PTR); |
912 | status = inw(ioaddr + DATAPORT); | |
913 | ||
914 | if (FD_Done(status)) | |
915 | { | |
916 | rfd_cmd = inw(ioaddr + DATAPORT); | |
917 | rx_next = inw(ioaddr + DATAPORT); | |
918 | pbuf = inw(ioaddr + DATAPORT); | |
6aa20a22 | 919 | |
1da177e4 LT |
920 | outw(pbuf, ioaddr + READ_PTR); |
921 | pkt_len = inw(ioaddr + DATAPORT); | |
922 | ||
923 | if (rfd_cmd!=0x0000) | |
924 | { | |
925 | printk(KERN_WARNING "%s: rfd_cmd not zero:0x%04x\n", | |
926 | dev->name, rfd_cmd); | |
927 | continue; | |
928 | } | |
929 | else if (pbuf!=rx_block+0x16) | |
930 | { | |
6aa20a22 | 931 | printk(KERN_WARNING "%s: rfd and rbd out of sync 0x%04x 0x%04x\n", |
1da177e4 LT |
932 | dev->name, rx_block+0x16, pbuf); |
933 | continue; | |
934 | } | |
6aa20a22 | 935 | else if ((pkt_len & 0xc000)!=0xc000) |
1da177e4 LT |
936 | { |
937 | printk(KERN_WARNING "%s: EOF or F not set on received buffer (%04x)\n", | |
938 | dev->name, pkt_len & 0xc000); | |
939 | continue; | |
940 | } | |
6aa20a22 | 941 | else if (!FD_OK(status)) |
1da177e4 | 942 | { |
09f75cd7 | 943 | dev->stats.rx_errors++; |
1da177e4 | 944 | if (FD_CRC(status)) |
09f75cd7 | 945 | dev->stats.rx_crc_errors++; |
1da177e4 | 946 | if (FD_Align(status)) |
09f75cd7 | 947 | dev->stats.rx_frame_errors++; |
1da177e4 | 948 | if (FD_Resrc(status)) |
09f75cd7 | 949 | dev->stats.rx_fifo_errors++; |
1da177e4 | 950 | if (FD_DMA(status)) |
09f75cd7 | 951 | dev->stats.rx_over_errors++; |
1da177e4 | 952 | if (FD_Short(status)) |
09f75cd7 | 953 | dev->stats.rx_length_errors++; |
1da177e4 LT |
954 | } |
955 | else | |
956 | { | |
957 | struct sk_buff *skb; | |
958 | pkt_len &= 0x3fff; | |
959 | skb = dev_alloc_skb(pkt_len+16); | |
960 | if (skb == NULL) | |
961 | { | |
962 | printk(KERN_WARNING "%s: Memory squeeze, dropping packet\n",dev->name); | |
09f75cd7 | 963 | dev->stats.rx_dropped++; |
1da177e4 LT |
964 | break; |
965 | } | |
1da177e4 LT |
966 | skb_reserve(skb, 2); |
967 | outw(pbuf+10, ioaddr+READ_PTR); | |
968 | insw(ioaddr+DATAPORT, skb_put(skb,pkt_len),(pkt_len+1)>>1); | |
969 | skb->protocol = eth_type_trans(skb,dev); | |
970 | netif_rx(skb); | |
09f75cd7 JG |
971 | dev->stats.rx_packets++; |
972 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
973 | } |
974 | outw(rx_block, ioaddr+WRITE_PTR); | |
975 | outw(0, ioaddr+DATAPORT); | |
976 | outw(0, ioaddr+DATAPORT); | |
977 | rx_block = rx_next; | |
978 | } | |
979 | } while (FD_Done(status) && boguscount--); | |
980 | lp->rx_ptr = rx_block; | |
981 | } | |
982 | ||
983 | /* | |
984 | * Hand a packet to the card for transmission | |
985 | * If we get here, we MUST have already checked | |
986 | * to make sure there is room in the transmit | |
987 | * buffer region. | |
988 | */ | |
989 | ||
990 | static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, | |
991 | unsigned short len) | |
992 | { | |
993 | struct net_local *lp = netdev_priv(dev); | |
994 | unsigned short ioaddr = dev->base_addr; | |
995 | ||
996 | if (LOCKUP16 || lp->width) { | |
997 | /* Stop the CU so that there is no chance that it | |
998 | jumps off to a bogus address while we are writing the | |
6aa20a22 | 999 | pointer to the next transmit packet in 8-bit mode -- |
1da177e4 | 1000 | this eliminates the "CU wedged" errors in 8-bit mode. |
6aa20a22 | 1001 | (Zoltan Szilagyi 10-12-96) */ |
1da177e4 LT |
1002 | scb_command(dev, SCB_CUsuspend); |
1003 | outw(0xFFFF, ioaddr+SIGNAL_CA); | |
1004 | } | |
1005 | ||
1006 | outw(lp->tx_head, ioaddr + WRITE_PTR); | |
1007 | ||
1008 | outw(0x0000, ioaddr + DATAPORT); | |
1009 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); | |
1010 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); | |
1011 | outw(lp->tx_head+0x0e, ioaddr + DATAPORT); | |
1012 | ||
1013 | outw(0x0000, ioaddr + DATAPORT); | |
1014 | outw(0x0000, ioaddr + DATAPORT); | |
1015 | outw(lp->tx_head+0x08, ioaddr + DATAPORT); | |
1016 | ||
1017 | outw(0x8000|len, ioaddr + DATAPORT); | |
1018 | outw(-1, ioaddr + DATAPORT); | |
1019 | outw(lp->tx_head+0x16, ioaddr + DATAPORT); | |
1020 | outw(0, ioaddr + DATAPORT); | |
1021 | ||
1022 | outsw(ioaddr + DATAPORT, buf, (len+1)>>1); | |
1023 | ||
1024 | outw(lp->tx_tail+0xc, ioaddr + WRITE_PTR); | |
1025 | outw(lp->tx_head, ioaddr + DATAPORT); | |
1026 | ||
1027 | dev->trans_start = jiffies; | |
1028 | lp->tx_tail = lp->tx_head; | |
1029 | if (lp->tx_head==TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) | |
1030 | lp->tx_head = TX_BUF_START; | |
1031 | else | |
1032 | lp->tx_head += TX_BUF_SIZE; | |
1033 | if (lp->tx_head != lp->tx_reap) | |
1034 | netif_wake_queue(dev); | |
6aa20a22 | 1035 | |
1da177e4 LT |
1036 | if (LOCKUP16 || lp->width) { |
1037 | /* Restart the CU so that the packet can actually | |
1038 | be transmitted. (Zoltan Szilagyi 10-12-96) */ | |
1039 | scb_command(dev, SCB_CUresume); | |
1040 | outw(0xFFFF, ioaddr+SIGNAL_CA); | |
1041 | } | |
1042 | ||
09f75cd7 | 1043 | dev->stats.tx_packets++; |
1da177e4 LT |
1044 | lp->last_tx = jiffies; |
1045 | } | |
1046 | ||
8a5f7daf SH |
1047 | static const struct net_device_ops eexp_netdev_ops = { |
1048 | .ndo_open = eexp_open, | |
1049 | .ndo_stop = eexp_close, | |
1050 | .ndo_start_xmit = eexp_xmit, | |
1051 | .ndo_set_multicast_list = eexp_set_multicast, | |
1052 | .ndo_tx_timeout = eexp_timeout, | |
1053 | .ndo_change_mtu = eth_change_mtu, | |
1054 | .ndo_set_mac_address = eth_mac_addr, | |
1055 | .ndo_validate_addr = eth_validate_addr, | |
1056 | }; | |
1057 | ||
1da177e4 LT |
1058 | /* |
1059 | * Sanity check the suspected EtherExpress card | |
1060 | * Read hardware address, reset card, size memory and initialize buffer | |
b74ca3a8 | 1061 | * memory pointers. These are held in netdev_priv(), in case someone has more |
1da177e4 LT |
1062 | * than one card in a machine. |
1063 | */ | |
1064 | ||
1065 | static int __init eexp_hw_probe(struct net_device *dev, unsigned short ioaddr) | |
1066 | { | |
1067 | unsigned short hw_addr[3]; | |
1068 | unsigned char buswidth; | |
1069 | unsigned int memory_size; | |
1070 | int i; | |
1071 | unsigned short xsum = 0; | |
1072 | struct net_local *lp = netdev_priv(dev); | |
1073 | ||
1074 | printk("%s: EtherExpress 16 at %#x ",dev->name,ioaddr); | |
1075 | ||
1076 | outb(ASIC_RST, ioaddr+EEPROM_Ctrl); | |
1077 | outb(0, ioaddr+EEPROM_Ctrl); | |
1078 | udelay(500); | |
1079 | outb(i586_RST, ioaddr+EEPROM_Ctrl); | |
1080 | ||
1081 | hw_addr[0] = eexp_hw_readeeprom(ioaddr,2); | |
1082 | hw_addr[1] = eexp_hw_readeeprom(ioaddr,3); | |
1083 | hw_addr[2] = eexp_hw_readeeprom(ioaddr,4); | |
1084 | ||
1085 | /* Standard Address or Compaq LTE Address */ | |
1086 | if (!((hw_addr[2]==0x00aa && ((hw_addr[1] & 0xff00)==0x0000)) || | |
6aa20a22 | 1087 | (hw_addr[2]==0x0080 && ((hw_addr[1] & 0xff00)==0x5F00)))) |
1da177e4 LT |
1088 | { |
1089 | printk(" rejected: invalid address %04x%04x%04x\n", | |
1090 | hw_addr[2],hw_addr[1],hw_addr[0]); | |
1091 | return -ENODEV; | |
1092 | } | |
1093 | ||
1094 | /* Calculate the EEPROM checksum. Carry on anyway if it's bad, | |
1095 | * though. | |
1096 | */ | |
1097 | for (i = 0; i < 64; i++) | |
1098 | xsum += eexp_hw_readeeprom(ioaddr, i); | |
1099 | if (xsum != 0xbaba) | |
1100 | printk(" (bad EEPROM xsum 0x%02x)", xsum); | |
1101 | ||
1102 | dev->base_addr = ioaddr; | |
1103 | for ( i=0 ; i<6 ; i++ ) | |
1104 | dev->dev_addr[i] = ((unsigned char *)hw_addr)[5-i]; | |
1105 | ||
1106 | { | |
1107 | static char irqmap[]={0, 9, 3, 4, 5, 10, 11, 0}; | |
1108 | unsigned short setupval = eexp_hw_readeeprom(ioaddr,0); | |
1109 | ||
1110 | /* Use the IRQ from EEPROM if none was given */ | |
1111 | if (!dev->irq) | |
1112 | dev->irq = irqmap[setupval>>13]; | |
1113 | ||
1114 | if (dev->if_port == 0xff) { | |
1115 | dev->if_port = !(setupval & 0x1000) ? AUI : | |
1116 | eexp_hw_readeeprom(ioaddr,5) & 0x1 ? TPE : BNC; | |
1117 | } | |
1118 | ||
1119 | buswidth = !((setupval & 0x400) >> 10); | |
1120 | } | |
1121 | ||
1122 | memset(lp, 0, sizeof(struct net_local)); | |
1123 | spin_lock_init(&lp->lock); | |
1124 | ||
6aa20a22 | 1125 | printk("(IRQ %d, %s connector, %d-bit bus", dev->irq, |
1da177e4 | 1126 | eexp_ifmap[dev->if_port], buswidth?8:16); |
6aa20a22 | 1127 | |
1da177e4 LT |
1128 | if (!request_region(dev->base_addr + 0x300e, 1, "EtherExpress")) |
1129 | return -EBUSY; | |
1130 | ||
1131 | eexp_hw_set_interface(dev); | |
6aa20a22 | 1132 | |
1da177e4 | 1133 | release_region(dev->base_addr + 0x300e, 1); |
6aa20a22 | 1134 | |
1da177e4 LT |
1135 | /* Find out how much RAM we have on the card */ |
1136 | outw(0, dev->base_addr + WRITE_PTR); | |
1137 | for (i = 0; i < 32768; i++) | |
1138 | outw(0, dev->base_addr + DATAPORT); | |
1139 | ||
1140 | for (memory_size = 0; memory_size < 64; memory_size++) | |
1141 | { | |
1142 | outw(memory_size<<10, dev->base_addr + READ_PTR); | |
1143 | if (inw(dev->base_addr+DATAPORT)) | |
1144 | break; | |
1145 | outw(memory_size<<10, dev->base_addr + WRITE_PTR); | |
1146 | outw(memory_size | 0x5000, dev->base_addr+DATAPORT); | |
1147 | outw(memory_size<<10, dev->base_addr + READ_PTR); | |
1148 | if (inw(dev->base_addr+DATAPORT) != (memory_size | 0x5000)) | |
1149 | break; | |
1150 | } | |
1151 | ||
1152 | /* Sort out the number of buffers. We may have 16, 32, 48 or 64k | |
1153 | * of RAM to play with. | |
1154 | */ | |
1155 | lp->num_tx_bufs = 4; | |
1156 | lp->rx_buf_end = 0x3ff6; | |
1157 | switch (memory_size) | |
1158 | { | |
1159 | case 64: | |
1160 | lp->rx_buf_end += 0x4000; | |
1161 | case 48: | |
1162 | lp->num_tx_bufs += 4; | |
1163 | lp->rx_buf_end += 0x4000; | |
1164 | case 32: | |
1165 | lp->rx_buf_end += 0x4000; | |
1166 | case 16: | |
1167 | printk(", %dk RAM)\n", memory_size); | |
1168 | break; | |
1169 | default: | |
1170 | printk(") bad memory size (%dk).\n", memory_size); | |
1171 | return -ENODEV; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | lp->rx_buf_start = TX_BUF_START + (lp->num_tx_bufs*TX_BUF_SIZE); | |
1176 | lp->width = buswidth; | |
1177 | ||
8a5f7daf | 1178 | dev->netdev_ops = &eexp_netdev_ops; |
1da177e4 | 1179 | dev->watchdog_timeo = 2*HZ; |
b1fc5505 HX |
1180 | |
1181 | return register_netdev(dev); | |
1da177e4 LT |
1182 | } |
1183 | ||
1184 | /* | |
1185 | * Read a word from the EtherExpress on-board serial EEPROM. | |
1186 | * The EEPROM contains 64 words of 16 bits. | |
1187 | */ | |
1188 | static unsigned short __init eexp_hw_readeeprom(unsigned short ioaddr, | |
1189 | unsigned char location) | |
1190 | { | |
1191 | unsigned short cmd = 0x180|(location&0x7f); | |
1192 | unsigned short rval = 0,wval = EC_CS|i586_RST; | |
1193 | int i; | |
1194 | ||
1195 | outb(EC_CS|i586_RST,ioaddr+EEPROM_Ctrl); | |
1196 | for (i=0x100 ; i ; i>>=1 ) | |
1197 | { | |
1198 | if (cmd&i) | |
1199 | wval |= EC_Wr; | |
1200 | else | |
1201 | wval &= ~EC_Wr; | |
1202 | ||
1203 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1204 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1205 | eeprom_delay(); | |
1206 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1207 | eeprom_delay(); | |
1208 | } | |
1209 | wval &= ~EC_Wr; | |
1210 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1211 | for (i=0x8000 ; i ; i>>=1 ) | |
1212 | { | |
1213 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1214 | eeprom_delay(); | |
1215 | if (inb(ioaddr+EEPROM_Ctrl)&EC_Rd) | |
1216 | rval |= i; | |
1217 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1218 | eeprom_delay(); | |
1219 | } | |
1220 | wval &= ~EC_CS; | |
1221 | outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); | |
1222 | eeprom_delay(); | |
1223 | outb(wval,ioaddr+EEPROM_Ctrl); | |
1224 | eeprom_delay(); | |
1225 | return rval; | |
1226 | } | |
1227 | ||
1228 | /* | |
1229 | * Reap tx buffers and return last transmit status. | |
1230 | * if ==0 then either: | |
1231 | * a) we're not transmitting anything, so why are we here? | |
1232 | * b) we've died. | |
1233 | * otherwise, Stat_Busy(return) means we've still got some packets | |
1234 | * to transmit, Stat_Done(return) means our buffers should be empty | |
1235 | * again | |
1236 | */ | |
1237 | ||
1238 | static unsigned short eexp_hw_lasttxstat(struct net_device *dev) | |
1239 | { | |
1240 | struct net_local *lp = netdev_priv(dev); | |
1241 | unsigned short tx_block = lp->tx_reap; | |
1242 | unsigned short status; | |
1243 | ||
1244 | if (!netif_queue_stopped(dev) && lp->tx_head==lp->tx_reap) | |
1245 | return 0x0000; | |
1246 | ||
1247 | do | |
1248 | { | |
1249 | outw(tx_block & ~31, dev->base_addr + SM_PTR); | |
1250 | status = inw(dev->base_addr + SHADOW(tx_block)); | |
1251 | if (!Stat_Done(status)) | |
1252 | { | |
1253 | lp->tx_link = tx_block; | |
1254 | return status; | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | lp->last_tx_restart = 0; | |
09f75cd7 | 1259 | dev->stats.collisions += Stat_NoColl(status); |
1da177e4 LT |
1260 | if (!Stat_OK(status)) |
1261 | { | |
1262 | char *whatsup = NULL; | |
09f75cd7 | 1263 | dev->stats.tx_errors++; |
6aa20a22 | 1264 | if (Stat_Abort(status)) |
09f75cd7 | 1265 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
1266 | if (Stat_TNoCar(status)) { |
1267 | whatsup = "aborted, no carrier"; | |
09f75cd7 | 1268 | dev->stats.tx_carrier_errors++; |
1da177e4 LT |
1269 | } |
1270 | if (Stat_TNoCTS(status)) { | |
1271 | whatsup = "aborted, lost CTS"; | |
09f75cd7 | 1272 | dev->stats.tx_carrier_errors++; |
1da177e4 LT |
1273 | } |
1274 | if (Stat_TNoDMA(status)) { | |
1275 | whatsup = "FIFO underran"; | |
09f75cd7 | 1276 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
1277 | } |
1278 | if (Stat_TXColl(status)) { | |
1279 | whatsup = "aborted, too many collisions"; | |
09f75cd7 | 1280 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
1281 | } |
1282 | if (whatsup) | |
1283 | printk(KERN_INFO "%s: transmit %s\n", | |
1284 | dev->name, whatsup); | |
1285 | } | |
1286 | else | |
09f75cd7 | 1287 | dev->stats.tx_packets++; |
1da177e4 LT |
1288 | } |
1289 | if (tx_block == TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) | |
1290 | lp->tx_reap = tx_block = TX_BUF_START; | |
1291 | else | |
1292 | lp->tx_reap = tx_block += TX_BUF_SIZE; | |
1293 | netif_wake_queue(dev); | |
1294 | } | |
1295 | while (lp->tx_reap != lp->tx_head); | |
1296 | ||
1297 | lp->tx_link = lp->tx_tail + 0x08; | |
1298 | ||
1299 | return status; | |
1300 | } | |
1301 | ||
1302 | /* | |
1303 | * This should never happen. It is called when some higher routine detects | |
1304 | * that the CU has stopped, to try to restart it from the last packet we knew | |
1305 | * we were working on, or the idle loop if we had finished for the time. | |
1306 | */ | |
1307 | ||
1308 | static void eexp_hw_txrestart(struct net_device *dev) | |
1309 | { | |
1310 | struct net_local *lp = netdev_priv(dev); | |
1311 | unsigned short ioaddr = dev->base_addr; | |
1312 | ||
1313 | lp->last_tx_restart = lp->tx_link; | |
1314 | scb_wrcbl(dev, lp->tx_link); | |
1315 | scb_command(dev, SCB_CUstart); | |
1316 | outb(0,ioaddr+SIGNAL_CA); | |
1317 | ||
1318 | { | |
1319 | unsigned short boguscount=50,failcount=5; | |
1320 | while (!scb_status(dev)) | |
1321 | { | |
1322 | if (!--boguscount) | |
1323 | { | |
1324 | if (--failcount) | |
1325 | { | |
1326 | printk(KERN_WARNING "%s: CU start timed out, status %04x, cmd %04x\n", dev->name, scb_status(dev), scb_rdcmd(dev)); | |
1327 | scb_wrcbl(dev, lp->tx_link); | |
1328 | scb_command(dev, SCB_CUstart); | |
1329 | outb(0,ioaddr+SIGNAL_CA); | |
1330 | boguscount = 100; | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | printk(KERN_WARNING "%s: Failed to restart CU, resetting board...\n",dev->name); | |
1335 | eexp_hw_init586(dev); | |
1336 | netif_wake_queue(dev); | |
1337 | return; | |
1338 | } | |
1339 | } | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | /* | |
1345 | * Writes down the list of transmit buffers into card memory. Each | |
1346 | * entry consists of an 82586 transmit command, followed by a jump | |
1347 | * pointing to itself. When we want to transmit a packet, we write | |
1348 | * the data into the appropriate transmit buffer and then modify the | |
1349 | * preceding jump to point at the new transmit command. This means that | |
1350 | * the 586 command unit is continuously active. | |
1351 | */ | |
1352 | ||
1353 | static void eexp_hw_txinit(struct net_device *dev) | |
1354 | { | |
1355 | struct net_local *lp = netdev_priv(dev); | |
1356 | unsigned short tx_block = TX_BUF_START; | |
1357 | unsigned short curtbuf; | |
1358 | unsigned short ioaddr = dev->base_addr; | |
1359 | ||
1360 | for ( curtbuf=0 ; curtbuf<lp->num_tx_bufs ; curtbuf++ ) | |
1361 | { | |
1362 | outw(tx_block, ioaddr + WRITE_PTR); | |
1363 | ||
1364 | outw(0x0000, ioaddr + DATAPORT); | |
1365 | outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); | |
1366 | outw(tx_block+0x08, ioaddr + DATAPORT); | |
1367 | outw(tx_block+0x0e, ioaddr + DATAPORT); | |
1368 | ||
1369 | outw(0x0000, ioaddr + DATAPORT); | |
1370 | outw(0x0000, ioaddr + DATAPORT); | |
1371 | outw(tx_block+0x08, ioaddr + DATAPORT); | |
1372 | ||
1373 | outw(0x8000, ioaddr + DATAPORT); | |
1374 | outw(-1, ioaddr + DATAPORT); | |
1375 | outw(tx_block+0x16, ioaddr + DATAPORT); | |
1376 | outw(0x0000, ioaddr + DATAPORT); | |
1377 | ||
1378 | tx_block += TX_BUF_SIZE; | |
1379 | } | |
1380 | lp->tx_head = TX_BUF_START; | |
1381 | lp->tx_reap = TX_BUF_START; | |
1382 | lp->tx_tail = tx_block - TX_BUF_SIZE; | |
1383 | lp->tx_link = lp->tx_tail + 0x08; | |
1384 | lp->rx_buf_start = tx_block; | |
1385 | ||
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * Write the circular list of receive buffer descriptors to card memory. | |
1390 | * The end of the list isn't marked, which means that the 82586 receive | |
1391 | * unit will loop until buffers become available (this avoids it giving us | |
1392 | * "out of resources" messages). | |
1393 | */ | |
1394 | ||
1395 | static void eexp_hw_rxinit(struct net_device *dev) | |
1396 | { | |
1397 | struct net_local *lp = netdev_priv(dev); | |
1398 | unsigned short rx_block = lp->rx_buf_start; | |
1399 | unsigned short ioaddr = dev->base_addr; | |
1400 | ||
1401 | lp->num_rx_bufs = 0; | |
1402 | lp->rx_first = lp->rx_ptr = rx_block; | |
1403 | do | |
1404 | { | |
1405 | lp->num_rx_bufs++; | |
1406 | ||
1407 | outw(rx_block, ioaddr + WRITE_PTR); | |
1408 | ||
1409 | outw(0, ioaddr + DATAPORT); outw(0, ioaddr+DATAPORT); | |
1410 | outw(rx_block + RX_BUF_SIZE, ioaddr+DATAPORT); | |
1411 | outw(0xffff, ioaddr+DATAPORT); | |
1412 | ||
1413 | outw(0x0000, ioaddr+DATAPORT); | |
1414 | outw(0xdead, ioaddr+DATAPORT); | |
1415 | outw(0xdead, ioaddr+DATAPORT); | |
1416 | outw(0xdead, ioaddr+DATAPORT); | |
1417 | outw(0xdead, ioaddr+DATAPORT); | |
1418 | outw(0xdead, ioaddr+DATAPORT); | |
1419 | outw(0xdead, ioaddr+DATAPORT); | |
1420 | ||
1421 | outw(0x0000, ioaddr+DATAPORT); | |
1422 | outw(rx_block + RX_BUF_SIZE + 0x16, ioaddr+DATAPORT); | |
1423 | outw(rx_block + 0x20, ioaddr+DATAPORT); | |
1424 | outw(0, ioaddr+DATAPORT); | |
1425 | outw(RX_BUF_SIZE-0x20, ioaddr+DATAPORT); | |
1426 | ||
1427 | lp->rx_last = rx_block; | |
1428 | rx_block += RX_BUF_SIZE; | |
1429 | } while (rx_block <= lp->rx_buf_end-RX_BUF_SIZE); | |
1430 | ||
1431 | ||
1432 | /* Make first Rx frame descriptor point to first Rx buffer | |
1433 | descriptor */ | |
1434 | outw(lp->rx_first + 6, ioaddr+WRITE_PTR); | |
1435 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); | |
1436 | ||
1437 | /* Close Rx frame descriptor ring */ | |
1438 | outw(lp->rx_last + 4, ioaddr+WRITE_PTR); | |
1439 | outw(lp->rx_first, ioaddr+DATAPORT); | |
6aa20a22 | 1440 | |
1da177e4 LT |
1441 | /* Close Rx buffer descriptor ring */ |
1442 | outw(lp->rx_last + 0x16 + 2, ioaddr+WRITE_PTR); | |
1443 | outw(lp->rx_first + 0x16, ioaddr+DATAPORT); | |
6aa20a22 | 1444 | |
1da177e4 LT |
1445 | } |
1446 | ||
1447 | /* | |
1448 | * Un-reset the 586, and start the configuration sequence. We don't wait for | |
1449 | * this to finish, but allow the interrupt handler to start the CU and RU for | |
1450 | * us. We can't start the receive/transmission system up before we know that | |
1451 | * the hardware is configured correctly. | |
1452 | */ | |
1453 | ||
1454 | static void eexp_hw_init586(struct net_device *dev) | |
1455 | { | |
1456 | struct net_local *lp = netdev_priv(dev); | |
1457 | unsigned short ioaddr = dev->base_addr; | |
1458 | int i; | |
1459 | ||
1460 | #if NET_DEBUG > 6 | |
1461 | printk("%s: eexp_hw_init586()\n", dev->name); | |
1462 | #endif | |
1463 | ||
1464 | lp->started = 0; | |
1465 | ||
1466 | set_loopback(dev); | |
1467 | ||
1468 | outb(SIRQ_dis|irqrmap[dev->irq],ioaddr+SET_IRQ); | |
1469 | ||
1470 | /* Download the startup code */ | |
1471 | outw(lp->rx_buf_end & ~31, ioaddr + SM_PTR); | |
1472 | outw(lp->width?0x0001:0x0000, ioaddr + 0x8006); | |
1473 | outw(0x0000, ioaddr + 0x8008); | |
1474 | outw(0x0000, ioaddr + 0x800a); | |
1475 | outw(0x0000, ioaddr + 0x800c); | |
1476 | outw(0x0000, ioaddr + 0x800e); | |
1477 | ||
f0c5b35c | 1478 | for (i = 0; i < ARRAY_SIZE(start_code) * 2; i+=32) { |
1da177e4 LT |
1479 | int j; |
1480 | outw(i, ioaddr + SM_PTR); | |
f0c5b35c | 1481 | for (j = 0; j < 16 && (i+j)/2 < ARRAY_SIZE(start_code); j+=2) |
1da177e4 LT |
1482 | outw(start_code[(i+j)/2], |
1483 | ioaddr+0x4000+j); | |
f0c5b35c | 1484 | for (j = 0; j < 16 && (i+j+16)/2 < ARRAY_SIZE(start_code); j+=2) |
1da177e4 LT |
1485 | outw(start_code[(i+j+16)/2], |
1486 | ioaddr+0x8000+j); | |
1487 | } | |
1488 | ||
1489 | /* Do we want promiscuous mode or multicast? */ | |
1490 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); | |
1491 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); | |
6aa20a22 | 1492 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
1da177e4 LT |
1493 | ioaddr+SHADOW(CONF_PROMISC)); |
1494 | lp->was_promisc = dev->flags & IFF_PROMISC; | |
1495 | #if 0 | |
1496 | eexp_setup_filter(dev); | |
1497 | #endif | |
1498 | ||
1499 | /* Write our hardware address */ | |
1500 | outw(CONF_HWADDR & ~31, ioaddr+SM_PTR); | |
1501 | outw(((unsigned short *)dev->dev_addr)[0], ioaddr+SHADOW(CONF_HWADDR)); | |
6aa20a22 | 1502 | outw(((unsigned short *)dev->dev_addr)[1], |
1da177e4 LT |
1503 | ioaddr+SHADOW(CONF_HWADDR+2)); |
1504 | outw(((unsigned short *)dev->dev_addr)[2], | |
1505 | ioaddr+SHADOW(CONF_HWADDR+4)); | |
1506 | ||
1507 | eexp_hw_txinit(dev); | |
1508 | eexp_hw_rxinit(dev); | |
1509 | ||
1510 | outb(0,ioaddr+EEPROM_Ctrl); | |
1511 | mdelay(5); | |
1512 | ||
1513 | scb_command(dev, 0xf000); | |
1514 | outb(0,ioaddr+SIGNAL_CA); | |
1515 | ||
1516 | outw(0, ioaddr+SM_PTR); | |
1517 | ||
1518 | { | |
1519 | unsigned short rboguscount=50,rfailcount=5; | |
1520 | while (inw(ioaddr+0x4000)) | |
1521 | { | |
1522 | if (!--rboguscount) | |
1523 | { | |
1524 | printk(KERN_WARNING "%s: i82586 reset timed out, kicking...\n", | |
1525 | dev->name); | |
1526 | scb_command(dev, 0); | |
1527 | outb(0,ioaddr+SIGNAL_CA); | |
1528 | rboguscount = 100; | |
1529 | if (!--rfailcount) | |
1530 | { | |
1531 | printk(KERN_WARNING "%s: i82586 not responding, giving up.\n", | |
1532 | dev->name); | |
1533 | return; | |
1534 | } | |
1535 | } | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | scb_wrcbl(dev, CONF_LINK); | |
1540 | scb_command(dev, 0xf000|SCB_CUstart); | |
1541 | outb(0,ioaddr+SIGNAL_CA); | |
1542 | ||
1543 | { | |
1544 | unsigned short iboguscount=50,ifailcount=5; | |
1545 | while (!scb_status(dev)) | |
1546 | { | |
1547 | if (!--iboguscount) | |
1548 | { | |
1549 | if (--ifailcount) | |
1550 | { | |
1551 | printk(KERN_WARNING "%s: i82586 initialization timed out, status %04x, cmd %04x\n", | |
1552 | dev->name, scb_status(dev), scb_rdcmd(dev)); | |
1553 | scb_wrcbl(dev, CONF_LINK); | |
1554 | scb_command(dev, 0xf000|SCB_CUstart); | |
1555 | outb(0,ioaddr+SIGNAL_CA); | |
1556 | iboguscount = 100; | |
1557 | } | |
1558 | else | |
1559 | { | |
1560 | printk(KERN_WARNING "%s: Failed to initialize i82586, giving up.\n",dev->name); | |
1561 | return; | |
1562 | } | |
1563 | } | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | clear_loopback(dev); | |
1568 | outb(SIRQ_en|irqrmap[dev->irq],ioaddr+SET_IRQ); | |
1569 | ||
1570 | lp->init_time = jiffies; | |
1571 | #if NET_DEBUG > 6 | |
1572 | printk("%s: leaving eexp_hw_init586()\n", dev->name); | |
1573 | #endif | |
1574 | return; | |
1575 | } | |
1576 | ||
1577 | static void eexp_setup_filter(struct net_device *dev) | |
1578 | { | |
46fa0617 | 1579 | struct dev_mc_list *dmi; |
1da177e4 LT |
1580 | unsigned short ioaddr = dev->base_addr; |
1581 | int count = dev->mc_count; | |
1582 | int i; | |
1583 | if (count > 8) { | |
1584 | printk(KERN_INFO "%s: too many multicast addresses (%d)\n", | |
1585 | dev->name, count); | |
1586 | count = 8; | |
1587 | } | |
6aa20a22 | 1588 | |
1da177e4 | 1589 | outw(CONF_NR_MULTICAST & ~31, ioaddr+SM_PTR); |
46fa0617 BR |
1590 | outw(6*count, ioaddr+SHADOW(CONF_NR_MULTICAST)); |
1591 | for (i = 0, dmi = dev->mc_list; i < count; i++, dmi = dmi->next) { | |
1592 | unsigned short *data; | |
1da177e4 LT |
1593 | if (!dmi) { |
1594 | printk(KERN_INFO "%s: too few multicast addresses\n", dev->name); | |
1595 | break; | |
1596 | } | |
1597 | if (dmi->dmi_addrlen != ETH_ALEN) { | |
1598 | printk(KERN_INFO "%s: invalid multicast address length given.\n", dev->name); | |
1599 | continue; | |
1600 | } | |
46fa0617 | 1601 | data = (unsigned short *)dmi->dmi_addr; |
1da177e4 LT |
1602 | outw((CONF_MULTICAST+(6*i)) & ~31, ioaddr+SM_PTR); |
1603 | outw(data[0], ioaddr+SHADOW(CONF_MULTICAST+(6*i))); | |
1604 | outw((CONF_MULTICAST+(6*i)+2) & ~31, ioaddr+SM_PTR); | |
1605 | outw(data[1], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+2)); | |
1606 | outw((CONF_MULTICAST+(6*i)+4) & ~31, ioaddr+SM_PTR); | |
1607 | outw(data[2], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+4)); | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | /* | |
1612 | * Set or clear the multicast filter for this adaptor. | |
1613 | */ | |
1614 | static void | |
1615 | eexp_set_multicast(struct net_device *dev) | |
1616 | { | |
1617 | unsigned short ioaddr = dev->base_addr; | |
1618 | struct net_local *lp = netdev_priv(dev); | |
1619 | int kick = 0, i; | |
1620 | if ((dev->flags & IFF_PROMISC) != lp->was_promisc) { | |
1621 | outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); | |
1622 | i = inw(ioaddr+SHADOW(CONF_PROMISC)); | |
1623 | outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), | |
1624 | ioaddr+SHADOW(CONF_PROMISC)); | |
1625 | lp->was_promisc = dev->flags & IFF_PROMISC; | |
1626 | kick = 1; | |
1627 | } | |
1628 | if (!(dev->flags & IFF_PROMISC)) { | |
1629 | eexp_setup_filter(dev); | |
1630 | if (lp->old_mc_count != dev->mc_count) { | |
1631 | kick = 1; | |
1632 | lp->old_mc_count = dev->mc_count; | |
1633 | } | |
1634 | } | |
1635 | if (kick) { | |
1636 | unsigned long oj; | |
1637 | scb_command(dev, SCB_CUsuspend); | |
1638 | outb(0, ioaddr+SIGNAL_CA); | |
1639 | outb(0, ioaddr+SIGNAL_CA); | |
1640 | #if 0 | |
1641 | printk("%s: waiting for CU to go suspended\n", dev->name); | |
1642 | #endif | |
1643 | oj = jiffies; | |
1644 | while ((SCB_CUstat(scb_status(dev)) == 2) && | |
1c0d6dcf | 1645 | (time_before(jiffies, oj + 2000))); |
1da177e4 LT |
1646 | if (SCB_CUstat(scb_status(dev)) == 2) |
1647 | printk("%s: warning, CU didn't stop\n", dev->name); | |
1648 | lp->started &= ~(STARTED_CU); | |
1649 | scb_wrcbl(dev, CONF_LINK); | |
1650 | scb_command(dev, SCB_CUstart); | |
1651 | outb(0, ioaddr+SIGNAL_CA); | |
1652 | } | |
1653 | } | |
1654 | ||
1655 | ||
1656 | /* | |
1657 | * MODULE stuff | |
1658 | */ | |
1659 | ||
1660 | #ifdef MODULE | |
1661 | ||
1662 | #define EEXP_MAX_CARDS 4 /* max number of cards to support */ | |
1663 | ||
1664 | static struct net_device *dev_eexp[EEXP_MAX_CARDS]; | |
1665 | static int irq[EEXP_MAX_CARDS]; | |
1666 | static int io[EEXP_MAX_CARDS]; | |
1667 | ||
1668 | module_param_array(io, int, NULL, 0); | |
1669 | module_param_array(irq, int, NULL, 0); | |
1670 | MODULE_PARM_DESC(io, "EtherExpress 16 I/O base address(es)"); | |
1671 | MODULE_PARM_DESC(irq, "EtherExpress 16 IRQ number(s)"); | |
1672 | MODULE_LICENSE("GPL"); | |
1673 | ||
1674 | ||
1675 | /* Ideally the user would give us io=, irq= for every card. If any parameters | |
1676 | * are specified, we verify and then use them. If no parameters are given, we | |
1677 | * autoprobe for one card only. | |
1678 | */ | |
b1176b95 | 1679 | int __init init_module(void) |
1da177e4 LT |
1680 | { |
1681 | struct net_device *dev; | |
1682 | int this_dev, found = 0; | |
1683 | ||
1684 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { | |
1685 | dev = alloc_etherdev(sizeof(struct net_local)); | |
1686 | dev->irq = irq[this_dev]; | |
1687 | dev->base_addr = io[this_dev]; | |
1688 | if (io[this_dev] == 0) { | |
1689 | if (this_dev) | |
1690 | break; | |
1691 | printk(KERN_NOTICE "eexpress.c: Module autoprobe not recommended, give io=xx.\n"); | |
1692 | } | |
b1fc5505 | 1693 | if (do_express_probe(dev) == 0) { |
1da177e4 LT |
1694 | dev_eexp[this_dev] = dev; |
1695 | found++; | |
1696 | continue; | |
1697 | } | |
1698 | printk(KERN_WARNING "eexpress.c: Failed to register card at 0x%x.\n", io[this_dev]); | |
1699 | free_netdev(dev); | |
1700 | break; | |
1701 | } | |
1702 | if (found) | |
1703 | return 0; | |
1704 | return -ENXIO; | |
1705 | } | |
1706 | ||
afc8eb46 | 1707 | void __exit cleanup_module(void) |
1da177e4 LT |
1708 | { |
1709 | int this_dev; | |
1710 | ||
1711 | for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { | |
1712 | struct net_device *dev = dev_eexp[this_dev]; | |
1713 | if (dev) { | |
1714 | unregister_netdev(dev); | |
1715 | free_netdev(dev); | |
1716 | } | |
1717 | } | |
1718 | } | |
1719 | #endif | |
1720 | ||
1721 | /* | |
1722 | * Local Variables: | |
1723 | * c-file-style: "linux" | |
1724 | * tab-width: 8 | |
1725 | * End: | |
1726 | */ |