Commit | Line | Data |
---|---|---|
6df3efcc JW |
1 | /* ====================================================================== |
2 | * | |
3 | * A PCMCIA ethernet driver for the 3com 3c589 card. | |
4 | * | |
5 | * Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net | |
6 | * | |
7 | * 3c589_cs.c 1.162 2001/10/13 00:08:50 | |
8 | * | |
9 | * The network driver code is based on Donald Becker's 3c589 code: | |
10 | * | |
11 | * Written 1994 by Donald Becker. | |
12 | * Copyright 1993 United States Government as represented by the | |
13 | * Director, National Security Agency. This software may be used and | |
14 | * distributed according to the terms of the GNU General Public License, | |
15 | * incorporated herein by reference. | |
16 | * Donald Becker may be reached at becker@scyld.com | |
17 | * | |
18 | * Updated for 2.5.x by Alan Cox <alan@lxorguk.ukuu.org.uk> | |
19 | * | |
20 | * ====================================================================== | |
21 | */ | |
1da177e4 | 22 | |
636b8116 JP |
23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
24 | ||
1da177e4 LT |
25 | #define DRV_NAME "3c589_cs" |
26 | #define DRV_VERSION "1.162-ac" | |
27 | ||
28 | #include <linux/module.h> | |
1da177e4 LT |
29 | #include <linux/kernel.h> |
30 | #include <linux/ptrace.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/timer.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/ethtool.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/etherdevice.h> | |
40 | #include <linux/skbuff.h> | |
41 | #include <linux/if_arp.h> | |
42 | #include <linux/ioport.h> | |
43 | #include <linux/bitops.h> | |
ff5688ae | 44 | #include <linux/jiffies.h> |
6df3efcc JW |
45 | #include <linux/uaccess.h> |
46 | #include <linux/io.h> | |
1da177e4 | 47 | |
1da177e4 LT |
48 | #include <pcmcia/cistpl.h> |
49 | #include <pcmcia/cisreg.h> | |
50 | #include <pcmcia/ciscode.h> | |
51 | #include <pcmcia/ds.h> | |
52 | ||
1da177e4 LT |
53 | |
54 | /* To minimize the size of the driver source I only define operating | |
6df3efcc JW |
55 | * constants if they are used several times. You'll need the manual |
56 | * if you want to understand driver details. | |
57 | */ | |
58 | ||
1da177e4 LT |
59 | /* Offsets from base I/O address. */ |
60 | #define EL3_DATA 0x00 | |
61 | #define EL3_TIMER 0x0a | |
62 | #define EL3_CMD 0x0e | |
63 | #define EL3_STATUS 0x0e | |
64 | ||
65 | #define EEPROM_READ 0x0080 | |
66 | #define EEPROM_BUSY 0x8000 | |
67 | ||
68 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
69 | ||
70 | /* The top five bits written to EL3_CMD are a command, the lower | |
6df3efcc JW |
71 | * 11 bits are the parameter, if applicable. |
72 | */ | |
73 | ||
1da177e4 | 74 | enum c509cmd { |
f64e9697 AK |
75 | TotalReset = 0<<11, |
76 | SelectWindow = 1<<11, | |
77 | StartCoax = 2<<11, | |
78 | RxDisable = 3<<11, | |
79 | RxEnable = 4<<11, | |
80 | RxReset = 5<<11, | |
81 | RxDiscard = 8<<11, | |
82 | TxEnable = 9<<11, | |
83 | TxDisable = 10<<11, | |
84 | TxReset = 11<<11, | |
85 | FakeIntr = 12<<11, | |
86 | AckIntr = 13<<11, | |
87 | SetIntrEnb = 14<<11, | |
88 | SetStatusEnb = 15<<11, | |
89 | SetRxFilter = 16<<11, | |
90 | SetRxThreshold = 17<<11, | |
91 | SetTxThreshold = 18<<11, | |
92 | SetTxStart = 19<<11, | |
93 | StatsEnable = 21<<11, | |
94 | StatsDisable = 22<<11, | |
95 | StopCoax = 23<<11 | |
1da177e4 LT |
96 | }; |
97 | ||
98 | enum c509status { | |
f64e9697 AK |
99 | IntLatch = 0x0001, |
100 | AdapterFailure = 0x0002, | |
101 | TxComplete = 0x0004, | |
102 | TxAvailable = 0x0008, | |
103 | RxComplete = 0x0010, | |
104 | RxEarly = 0x0020, | |
105 | IntReq = 0x0040, | |
106 | StatsFull = 0x0080, | |
107 | CmdBusy = 0x1000 | |
1da177e4 LT |
108 | }; |
109 | ||
110 | /* The SetRxFilter command accepts the following classes: */ | |
111 | enum RxFilter { | |
f64e9697 AK |
112 | RxStation = 1, |
113 | RxMulticast = 2, | |
114 | RxBroadcast = 4, | |
115 | RxProm = 8 | |
1da177e4 LT |
116 | }; |
117 | ||
118 | /* Register window 1 offsets, the window used in normal operation. */ | |
119 | #define TX_FIFO 0x00 | |
120 | #define RX_FIFO 0x00 | |
f64e9697 AK |
121 | #define RX_STATUS 0x08 |
122 | #define TX_STATUS 0x0B | |
1da177e4 LT |
123 | #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */ |
124 | ||
125 | #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */ | |
126 | #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */ | |
127 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ | |
128 | #define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */ | |
129 | ||
130 | /* Time in jiffies before concluding Tx hung */ | |
131 | #define TX_TIMEOUT ((400*HZ)/1000) | |
132 | ||
133 | struct el3_private { | |
fd238232 | 134 | struct pcmcia_device *p_dev; |
f64e9697 AK |
135 | /* For transceiver monitoring */ |
136 | struct timer_list media; | |
137 | u16 media_status; | |
138 | u16 fast_poll; | |
139 | unsigned long last_irq; | |
140 | spinlock_t lock; | |
1da177e4 LT |
141 | }; |
142 | ||
21c0f275 | 143 | static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" }; |
1da177e4 LT |
144 | |
145 | /*====================================================================*/ | |
146 | ||
147 | /* Module parameters */ | |
148 | ||
149 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
150 | MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver"); | |
151 | MODULE_LICENSE("GPL"); | |
152 | ||
153 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
154 | ||
155 | /* Special hook for setting if_port when module is loaded */ | |
156 | INT_MODULE_PARM(if_port, 0); | |
157 | ||
1da177e4 LT |
158 | |
159 | /*====================================================================*/ | |
160 | ||
15b99ac1 | 161 | static int tc589_config(struct pcmcia_device *link); |
fba395ee | 162 | static void tc589_release(struct pcmcia_device *link); |
1da177e4 | 163 | |
906da809 | 164 | static u16 read_eeprom(unsigned int ioaddr, int index); |
1da177e4 LT |
165 | static void tc589_reset(struct net_device *dev); |
166 | static void media_check(unsigned long arg); | |
167 | static int el3_config(struct net_device *dev, struct ifmap *map); | |
168 | static int el3_open(struct net_device *dev); | |
dbf02fae SH |
169 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
170 | struct net_device *dev); | |
7d12e780 | 171 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
1da177e4 LT |
172 | static void update_stats(struct net_device *dev); |
173 | static struct net_device_stats *el3_get_stats(struct net_device *dev); | |
174 | static int el3_rx(struct net_device *dev); | |
175 | static int el3_close(struct net_device *dev); | |
176 | static void el3_tx_timeout(struct net_device *dev); | |
e445bb4e | 177 | static void set_rx_mode(struct net_device *dev); |
1da177e4 | 178 | static void set_multicast_list(struct net_device *dev); |
7282d491 | 179 | static const struct ethtool_ops netdev_ethtool_ops; |
1da177e4 | 180 | |
cc3b4866 | 181 | static void tc589_detach(struct pcmcia_device *p_dev); |
1da177e4 | 182 | |
97161d4b | 183 | static const struct net_device_ops el3_netdev_ops = { |
f64e9697 AK |
184 | .ndo_open = el3_open, |
185 | .ndo_stop = el3_close, | |
97161d4b | 186 | .ndo_start_xmit = el3_start_xmit, |
f64e9697 | 187 | .ndo_tx_timeout = el3_tx_timeout, |
97161d4b SH |
188 | .ndo_set_config = el3_config, |
189 | .ndo_get_stats = el3_get_stats, | |
afc4b13d | 190 | .ndo_set_rx_mode = set_multicast_list, |
97161d4b | 191 | .ndo_change_mtu = eth_change_mtu, |
f64e9697 | 192 | .ndo_set_mac_address = eth_mac_addr, |
97161d4b SH |
193 | .ndo_validate_addr = eth_validate_addr, |
194 | }; | |
195 | ||
15b99ac1 | 196 | static int tc589_probe(struct pcmcia_device *link) |
1da177e4 | 197 | { |
6df3efcc JW |
198 | struct el3_private *lp; |
199 | struct net_device *dev; | |
1da177e4 | 200 | |
6df3efcc | 201 | dev_dbg(&link->dev, "3c589_attach()\n"); |
f8cfa618 | 202 | |
6df3efcc JW |
203 | /* Create new ethernet device */ |
204 | dev = alloc_etherdev(sizeof(struct el3_private)); | |
205 | if (!dev) | |
206 | return -ENOMEM; | |
207 | lp = netdev_priv(dev); | |
208 | link->priv = dev; | |
209 | lp->p_dev = link; | |
1da177e4 | 210 | |
6df3efcc JW |
211 | spin_lock_init(&lp->lock); |
212 | link->resource[0]->end = 16; | |
213 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; | |
eb14120f | 214 | |
6df3efcc JW |
215 | link->config_flags |= CONF_ENABLE_IRQ; |
216 | link->config_index = 1; | |
f8cfa618 | 217 | |
6df3efcc JW |
218 | dev->netdev_ops = &el3_netdev_ops; |
219 | dev->watchdog_timeo = TX_TIMEOUT; | |
97161d4b | 220 | |
7ad24ea4 | 221 | dev->ethtool_ops = &netdev_ethtool_ops; |
1da177e4 | 222 | |
6df3efcc | 223 | return tc589_config(link); |
2262054e | 224 | } |
1da177e4 | 225 | |
fba395ee | 226 | static void tc589_detach(struct pcmcia_device *link) |
1da177e4 | 227 | { |
6df3efcc | 228 | struct net_device *dev = link->priv; |
b4635811 | 229 | |
6df3efcc | 230 | dev_dbg(&link->dev, "3c589_detach\n"); |
1da177e4 | 231 | |
6df3efcc | 232 | unregister_netdev(dev); |
1da177e4 | 233 | |
6df3efcc | 234 | tc589_release(link); |
cc3b4866 | 235 | |
6df3efcc | 236 | free_netdev(dev); |
1da177e4 LT |
237 | } /* tc589_detach */ |
238 | ||
15b99ac1 | 239 | static int tc589_config(struct pcmcia_device *link) |
1da177e4 | 240 | { |
6df3efcc JW |
241 | struct net_device *dev = link->priv; |
242 | __be16 *phys_addr; | |
243 | int ret, i, j, multi = 0, fifo; | |
244 | unsigned int ioaddr; | |
245 | static const char * const ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; | |
246 | u8 *buf; | |
247 | size_t len; | |
248 | ||
249 | dev_dbg(&link->dev, "3c589_config\n"); | |
250 | ||
251 | phys_addr = (__be16 *)dev->dev_addr; | |
252 | /* Is this a 3c562? */ | |
253 | if (link->manf_id != MANFID_3COM) | |
254 | dev_info(&link->dev, "hmmm, is this really a 3Com card??\n"); | |
255 | multi = (link->card_id == PRODID_3COM_3C562); | |
256 | ||
257 | link->io_lines = 16; | |
258 | ||
259 | /* For the 3c562, the base address must be xx00-xx7f */ | |
260 | for (i = j = 0; j < 0x400; j += 0x10) { | |
261 | if (multi && (j & 0x80)) | |
262 | continue; | |
263 | link->resource[0]->start = j ^ 0x300; | |
264 | i = pcmcia_request_io(link); | |
265 | if (i == 0) | |
266 | break; | |
1da177e4 | 267 | } |
6df3efcc JW |
268 | if (i != 0) |
269 | goto failed; | |
270 | ||
271 | ret = pcmcia_request_irq(link, el3_interrupt); | |
272 | if (ret) | |
273 | goto failed; | |
274 | ||
275 | ret = pcmcia_enable_device(link); | |
276 | if (ret) | |
277 | goto failed; | |
278 | ||
279 | dev->irq = link->irq; | |
280 | dev->base_addr = link->resource[0]->start; | |
281 | ioaddr = dev->base_addr; | |
282 | EL3WINDOW(0); | |
283 | ||
284 | /* The 3c589 has an extra EEPROM for configuration info, including | |
285 | * the hardware address. The 3c562 puts the address in the CIS. | |
286 | */ | |
287 | len = pcmcia_get_tuple(link, 0x88, &buf); | |
288 | if (buf && len >= 6) { | |
289 | for (i = 0; i < 3; i++) | |
290 | phys_addr[i] = htons(le16_to_cpu(buf[i*2])); | |
291 | kfree(buf); | |
292 | } else { | |
293 | kfree(buf); /* 0 < len < 6 */ | |
294 | for (i = 0; i < 3; i++) | |
295 | phys_addr[i] = htons(read_eeprom(ioaddr, i)); | |
296 | if (phys_addr[0] == htons(0x6060)) { | |
297 | dev_err(&link->dev, "IO port conflict at 0x%03lx-0x%03lx\n", | |
298 | dev->base_addr, dev->base_addr+15); | |
299 | goto failed; | |
300 | } | |
301 | } | |
302 | ||
303 | /* The address and resource configuration register aren't loaded from | |
304 | * the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. | |
305 | */ | |
306 | ||
307 | outw(0x3f00, ioaddr + 8); | |
308 | fifo = inl(ioaddr); | |
309 | ||
310 | /* The if_port symbol can be set when the module is loaded */ | |
311 | if ((if_port >= 0) && (if_port <= 3)) | |
312 | dev->if_port = if_port; | |
313 | else | |
314 | dev_err(&link->dev, "invalid if_port requested\n"); | |
315 | ||
316 | SET_NETDEV_DEV(dev, &link->dev); | |
317 | ||
318 | if (register_netdev(dev) != 0) { | |
319 | dev_err(&link->dev, "register_netdev() failed\n"); | |
320 | goto failed; | |
321 | } | |
322 | ||
323 | netdev_info(dev, "3Com 3c%s, io %#3lx, irq %d, hw_addr %pM\n", | |
324 | (multi ? "562" : "589"), dev->base_addr, dev->irq, | |
325 | dev->dev_addr); | |
326 | netdev_info(dev, " %dK FIFO split %s Rx:Tx, %s xcvr\n", | |
327 | (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3], | |
328 | if_names[dev->if_port]); | |
329 | return 0; | |
1da177e4 | 330 | |
1da177e4 | 331 | failed: |
6df3efcc JW |
332 | tc589_release(link); |
333 | return -ENODEV; | |
1da177e4 LT |
334 | } /* tc589_config */ |
335 | ||
fba395ee | 336 | static void tc589_release(struct pcmcia_device *link) |
1da177e4 | 337 | { |
fba395ee | 338 | pcmcia_disable_device(link); |
1da177e4 LT |
339 | } |
340 | ||
fba395ee | 341 | static int tc589_suspend(struct pcmcia_device *link) |
98e4c28b | 342 | { |
98e4c28b DB |
343 | struct net_device *dev = link->priv; |
344 | ||
e2d40963 | 345 | if (link->open) |
8661bb5b | 346 | netif_device_detach(dev); |
98e4c28b DB |
347 | |
348 | return 0; | |
349 | } | |
350 | ||
fba395ee | 351 | static int tc589_resume(struct pcmcia_device *link) |
98e4c28b | 352 | { |
98e4c28b DB |
353 | struct net_device *dev = link->priv; |
354 | ||
f64e9697 | 355 | if (link->open) { |
8661bb5b DB |
356 | tc589_reset(dev); |
357 | netif_device_attach(dev); | |
98e4c28b DB |
358 | } |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
1da177e4 LT |
363 | /*====================================================================*/ |
364 | ||
6df3efcc JW |
365 | /* Use this for commands that may take time to finish */ |
366 | ||
1da177e4 LT |
367 | static void tc589_wait_for_completion(struct net_device *dev, int cmd) |
368 | { | |
6df3efcc JW |
369 | int i = 100; |
370 | outw(cmd, dev->base_addr + EL3_CMD); | |
371 | while (--i > 0) | |
372 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) | |
373 | break; | |
374 | if (i == 0) | |
375 | netdev_warn(dev, "command 0x%04x did not complete!\n", cmd); | |
1da177e4 LT |
376 | } |
377 | ||
6df3efcc JW |
378 | /* Read a word from the EEPROM using the regular EEPROM access register. |
379 | * Assume that we are in register window zero. | |
380 | */ | |
381 | ||
906da809 | 382 | static u16 read_eeprom(unsigned int ioaddr, int index) |
1da177e4 | 383 | { |
6df3efcc JW |
384 | int i; |
385 | outw(EEPROM_READ + index, ioaddr + 10); | |
386 | /* Reading the eeprom takes 162 us */ | |
387 | for (i = 1620; i >= 0; i--) | |
388 | if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0) | |
389 | break; | |
390 | return inw(ioaddr + 12); | |
1da177e4 LT |
391 | } |
392 | ||
6df3efcc JW |
393 | /* Set transceiver type, perhaps to something other than what the user |
394 | * specified in dev->if_port. | |
395 | */ | |
396 | ||
1da177e4 LT |
397 | static void tc589_set_xcvr(struct net_device *dev, int if_port) |
398 | { | |
6df3efcc JW |
399 | struct el3_private *lp = netdev_priv(dev); |
400 | unsigned int ioaddr = dev->base_addr; | |
401 | ||
402 | EL3WINDOW(0); | |
403 | switch (if_port) { | |
404 | case 0: | |
405 | case 1: | |
406 | outw(0, ioaddr + 6); | |
407 | break; | |
408 | case 2: | |
409 | outw(3<<14, ioaddr + 6); | |
410 | break; | |
411 | case 3: | |
412 | outw(1<<14, ioaddr + 6); | |
413 | break; | |
414 | } | |
415 | /* On PCMCIA, this just turns on the LED */ | |
416 | outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD); | |
417 | /* 10baseT interface, enable link beat and jabber check. */ | |
418 | EL3WINDOW(4); | |
419 | outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA); | |
420 | EL3WINDOW(1); | |
421 | if (if_port == 2) | |
422 | lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000); | |
423 | else | |
424 | lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800); | |
1da177e4 LT |
425 | } |
426 | ||
427 | static void dump_status(struct net_device *dev) | |
428 | { | |
6df3efcc JW |
429 | unsigned int ioaddr = dev->base_addr; |
430 | EL3WINDOW(1); | |
431 | netdev_info(dev, " irq status %04x, rx status %04x, tx status %02x tx free %04x\n", | |
432 | inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS), | |
433 | inb(ioaddr+TX_STATUS), inw(ioaddr+TX_FREE)); | |
434 | EL3WINDOW(4); | |
435 | netdev_info(dev, " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n", | |
436 | inw(ioaddr+0x04), inw(ioaddr+0x06), inw(ioaddr+0x08), | |
437 | inw(ioaddr+0x0a)); | |
438 | EL3WINDOW(1); | |
1da177e4 LT |
439 | } |
440 | ||
441 | /* Reset and restore all of the 3c589 registers. */ | |
442 | static void tc589_reset(struct net_device *dev) | |
443 | { | |
6df3efcc JW |
444 | unsigned int ioaddr = dev->base_addr; |
445 | int i; | |
446 | ||
447 | EL3WINDOW(0); | |
448 | outw(0x0001, ioaddr + 4); /* Activate board. */ | |
449 | outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */ | |
450 | ||
451 | /* Set the station address in window 2. */ | |
452 | EL3WINDOW(2); | |
453 | for (i = 0; i < 6; i++) | |
454 | outb(dev->dev_addr[i], ioaddr + i); | |
455 | ||
456 | tc589_set_xcvr(dev, dev->if_port); | |
457 | ||
458 | /* Switch to the stats window, and clear all stats by reading. */ | |
459 | outw(StatsDisable, ioaddr + EL3_CMD); | |
460 | EL3WINDOW(6); | |
461 | for (i = 0; i < 9; i++) | |
462 | inb(ioaddr+i); | |
463 | inw(ioaddr + 10); | |
464 | inw(ioaddr + 12); | |
465 | ||
466 | /* Switch to register set 1 for normal use. */ | |
467 | EL3WINDOW(1); | |
468 | ||
469 | set_rx_mode(dev); | |
470 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
471 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
472 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
473 | /* Allow status bits to be seen. */ | |
474 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); | |
475 | /* Ack all pending events, and set active indicator mask. */ | |
476 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
1da177e4 | 477 | ioaddr + EL3_CMD); |
6df3efcc | 478 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
1da177e4 LT |
479 | | AdapterFailure, ioaddr + EL3_CMD); |
480 | } | |
481 | ||
482 | static void netdev_get_drvinfo(struct net_device *dev, | |
483 | struct ethtool_drvinfo *info) | |
484 | { | |
68aad78c RJ |
485 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
486 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
487 | snprintf(info->bus_info, sizeof(info->bus_info), | |
488 | "PCMCIA 0x%lx", dev->base_addr); | |
1da177e4 LT |
489 | } |
490 | ||
7282d491 | 491 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 | 492 | .get_drvinfo = netdev_get_drvinfo, |
1da177e4 LT |
493 | }; |
494 | ||
495 | static int el3_config(struct net_device *dev, struct ifmap *map) | |
496 | { | |
6df3efcc JW |
497 | if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { |
498 | if (map->port <= 3) { | |
499 | dev->if_port = map->port; | |
500 | netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]); | |
501 | tc589_set_xcvr(dev, dev->if_port); | |
502 | } else { | |
503 | return -EINVAL; | |
504 | } | |
505 | } | |
506 | return 0; | |
1da177e4 LT |
507 | } |
508 | ||
509 | static int el3_open(struct net_device *dev) | |
510 | { | |
6df3efcc JW |
511 | struct el3_private *lp = netdev_priv(dev); |
512 | struct pcmcia_device *link = lp->p_dev; | |
f64e9697 | 513 | |
6df3efcc JW |
514 | if (!pcmcia_dev_present(link)) |
515 | return -ENODEV; | |
1da177e4 | 516 | |
6df3efcc JW |
517 | link->open++; |
518 | netif_start_queue(dev); | |
f64e9697 | 519 | |
6df3efcc | 520 | tc589_reset(dev); |
1d6c4cca VT |
521 | setup_timer(&lp->media, media_check, (unsigned long)dev); |
522 | mod_timer(&lp->media, jiffies + HZ); | |
1da177e4 | 523 | |
6df3efcc | 524 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
1da177e4 | 525 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
f64e9697 | 526 | |
6df3efcc | 527 | return 0; |
1da177e4 LT |
528 | } |
529 | ||
530 | static void el3_tx_timeout(struct net_device *dev) | |
531 | { | |
6df3efcc JW |
532 | unsigned int ioaddr = dev->base_addr; |
533 | ||
534 | netdev_warn(dev, "Transmit timed out!\n"); | |
535 | dump_status(dev); | |
536 | dev->stats.tx_errors++; | |
860e9538 | 537 | netif_trans_update(dev); /* prevent tx timeout */ |
6df3efcc JW |
538 | /* Issue TX_RESET and TX_START commands. */ |
539 | tc589_wait_for_completion(dev, TxReset); | |
540 | outw(TxEnable, ioaddr + EL3_CMD); | |
541 | netif_wake_queue(dev); | |
1da177e4 LT |
542 | } |
543 | ||
544 | static void pop_tx_status(struct net_device *dev) | |
545 | { | |
6df3efcc JW |
546 | unsigned int ioaddr = dev->base_addr; |
547 | int i; | |
548 | ||
549 | /* Clear the Tx status stack. */ | |
550 | for (i = 32; i > 0; i--) { | |
551 | u_char tx_status = inb(ioaddr + TX_STATUS); | |
552 | if (!(tx_status & 0x84)) | |
553 | break; | |
554 | /* reset transmitter on jabber error or underrun */ | |
555 | if (tx_status & 0x30) | |
556 | tc589_wait_for_completion(dev, TxReset); | |
557 | if (tx_status & 0x38) { | |
558 | netdev_dbg(dev, "transmit error: status 0x%02x\n", tx_status); | |
559 | outw(TxEnable, ioaddr + EL3_CMD); | |
560 | dev->stats.tx_aborted_errors++; | |
561 | } | |
562 | outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */ | |
1da177e4 | 563 | } |
1da177e4 LT |
564 | } |
565 | ||
dbf02fae SH |
566 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
567 | struct net_device *dev) | |
1da177e4 | 568 | { |
6df3efcc JW |
569 | unsigned int ioaddr = dev->base_addr; |
570 | struct el3_private *priv = netdev_priv(dev); | |
571 | unsigned long flags; | |
1da177e4 | 572 | |
6df3efcc | 573 | netdev_dbg(dev, "el3_start_xmit(length = %ld) called, status %4.4x.\n", |
f64e9697 | 574 | (long)skb->len, inw(ioaddr + EL3_STATUS)); |
1da177e4 | 575 | |
6df3efcc | 576 | spin_lock_irqsave(&priv->lock, flags); |
d08d2839 | 577 | |
6df3efcc | 578 | dev->stats.tx_bytes += skb->len; |
1da177e4 | 579 | |
6df3efcc JW |
580 | /* Put out the doubleword header... */ |
581 | outw(skb->len, ioaddr + TX_FIFO); | |
582 | outw(0x00, ioaddr + TX_FIFO); | |
583 | /* ... and the packet rounded to a doubleword. */ | |
584 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); | |
1da177e4 | 585 | |
6df3efcc JW |
586 | if (inw(ioaddr + TX_FREE) <= 1536) { |
587 | netif_stop_queue(dev); | |
588 | /* Interrupt us when the FIFO has room for max-sized packet. */ | |
589 | outw(SetTxThreshold + 1536, ioaddr + EL3_CMD); | |
590 | } | |
1da177e4 | 591 | |
6df3efcc JW |
592 | pop_tx_status(dev); |
593 | spin_unlock_irqrestore(&priv->lock, flags); | |
594 | dev_kfree_skb(skb); | |
f64e9697 | 595 | |
6df3efcc | 596 | return NETDEV_TX_OK; |
1da177e4 LT |
597 | } |
598 | ||
599 | /* The EL3 interrupt handler. */ | |
7d12e780 | 600 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
1da177e4 | 601 | { |
6df3efcc JW |
602 | struct net_device *dev = (struct net_device *) dev_id; |
603 | struct el3_private *lp = netdev_priv(dev); | |
604 | unsigned int ioaddr; | |
605 | __u16 status; | |
606 | int i = 0, handled = 1; | |
f64e9697 | 607 | |
6df3efcc JW |
608 | if (!netif_device_present(dev)) |
609 | return IRQ_NONE; | |
1da177e4 | 610 | |
6df3efcc | 611 | ioaddr = dev->base_addr; |
1da177e4 | 612 | |
6df3efcc | 613 | netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS)); |
1da177e4 | 614 | |
6df3efcc JW |
615 | spin_lock(&lp->lock); |
616 | while ((status = inw(ioaddr + EL3_STATUS)) & | |
1da177e4 | 617 | (IntLatch | RxComplete | StatsFull)) { |
6df3efcc JW |
618 | if ((status & 0xe000) != 0x2000) { |
619 | netdev_dbg(dev, "interrupt from dead card\n"); | |
620 | handled = 0; | |
621 | break; | |
622 | } | |
623 | if (status & RxComplete) | |
624 | el3_rx(dev); | |
625 | if (status & TxAvailable) { | |
626 | netdev_dbg(dev, " TX room bit was handled.\n"); | |
627 | /* There's room in the FIFO for a full-sized packet. */ | |
628 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
629 | netif_wake_queue(dev); | |
630 | } | |
631 | if (status & TxComplete) | |
632 | pop_tx_status(dev); | |
633 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
634 | /* Handle all uncommon interrupts. */ | |
635 | if (status & StatsFull) /* Empty statistics. */ | |
636 | update_stats(dev); | |
637 | if (status & RxEarly) { | |
638 | /* Rx early is unused. */ | |
639 | el3_rx(dev); | |
640 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
641 | } | |
642 | if (status & AdapterFailure) { | |
643 | u16 fifo_diag; | |
644 | EL3WINDOW(4); | |
645 | fifo_diag = inw(ioaddr + 4); | |
646 | EL3WINDOW(1); | |
647 | netdev_warn(dev, "adapter failure, FIFO diagnostic register %04x.\n", | |
f64e9697 | 648 | fifo_diag); |
6df3efcc JW |
649 | if (fifo_diag & 0x0400) { |
650 | /* Tx overrun */ | |
651 | tc589_wait_for_completion(dev, TxReset); | |
652 | outw(TxEnable, ioaddr + EL3_CMD); | |
653 | } | |
654 | if (fifo_diag & 0x2000) { | |
655 | /* Rx underrun */ | |
656 | tc589_wait_for_completion(dev, RxReset); | |
657 | set_rx_mode(dev); | |
658 | outw(RxEnable, ioaddr + EL3_CMD); | |
659 | } | |
660 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); | |
661 | } | |
1da177e4 | 662 | } |
6df3efcc JW |
663 | if (++i > 10) { |
664 | netdev_err(dev, "infinite loop in interrupt, status %4.4x.\n", | |
665 | status); | |
666 | /* Clear all interrupts */ | |
667 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); | |
668 | break; | |
1da177e4 | 669 | } |
6df3efcc JW |
670 | /* Acknowledge the IRQ. */ |
671 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
1da177e4 | 672 | } |
6df3efcc JW |
673 | lp->last_irq = jiffies; |
674 | spin_unlock(&lp->lock); | |
675 | netdev_dbg(dev, "exiting interrupt, status %4.4x.\n", | |
676 | inw(ioaddr + EL3_STATUS)); | |
677 | return IRQ_RETVAL(handled); | |
1da177e4 LT |
678 | } |
679 | ||
680 | static void media_check(unsigned long arg) | |
681 | { | |
6df3efcc JW |
682 | struct net_device *dev = (struct net_device *)(arg); |
683 | struct el3_private *lp = netdev_priv(dev); | |
684 | unsigned int ioaddr = dev->base_addr; | |
685 | u16 media, errs; | |
686 | unsigned long flags; | |
1da177e4 | 687 | |
6df3efcc JW |
688 | if (!netif_device_present(dev)) |
689 | goto reschedule; | |
1da177e4 | 690 | |
6df3efcc JW |
691 | /* Check for pending interrupt with expired latency timer: with |
692 | * this, we can limp along even if the interrupt is blocked | |
693 | */ | |
694 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && | |
1da177e4 | 695 | (inb(ioaddr + EL3_TIMER) == 0xff)) { |
6df3efcc JW |
696 | if (!lp->fast_poll) |
697 | netdev_warn(dev, "interrupt(s) dropped!\n"); | |
698 | ||
699 | local_irq_save(flags); | |
700 | el3_interrupt(dev->irq, dev); | |
701 | local_irq_restore(flags); | |
702 | ||
703 | lp->fast_poll = HZ; | |
704 | } | |
705 | if (lp->fast_poll) { | |
706 | lp->fast_poll--; | |
707 | lp->media.expires = jiffies + HZ/100; | |
708 | add_timer(&lp->media); | |
709 | return; | |
710 | } | |
711 | ||
712 | /* lp->lock guards the EL3 window. Window should always be 1 except | |
713 | * when the lock is held | |
714 | */ | |
715 | ||
716 | spin_lock_irqsave(&lp->lock, flags); | |
717 | EL3WINDOW(4); | |
718 | media = inw(ioaddr+WN4_MEDIA) & 0xc810; | |
719 | ||
720 | /* Ignore collisions unless we've had no irq's recently */ | |
721 | if (time_before(jiffies, lp->last_irq + HZ)) { | |
722 | media &= ~0x0010; | |
723 | } else { | |
724 | /* Try harder to detect carrier errors */ | |
725 | EL3WINDOW(6); | |
726 | outw(StatsDisable, ioaddr + EL3_CMD); | |
727 | errs = inb(ioaddr + 0); | |
728 | outw(StatsEnable, ioaddr + EL3_CMD); | |
729 | dev->stats.tx_carrier_errors += errs; | |
730 | if (errs || (lp->media_status & 0x0010)) | |
731 | media |= 0x0010; | |
732 | } | |
1da177e4 | 733 | |
6df3efcc JW |
734 | if (media != lp->media_status) { |
735 | if ((media & lp->media_status & 0x8000) && | |
736 | ((lp->media_status ^ media) & 0x0800)) | |
f64e9697 | 737 | netdev_info(dev, "%s link beat\n", |
6df3efcc JW |
738 | (lp->media_status & 0x0800 ? "lost" : "found")); |
739 | else if ((media & lp->media_status & 0x4000) && | |
1da177e4 | 740 | ((lp->media_status ^ media) & 0x0010)) |
f64e9697 | 741 | netdev_info(dev, "coax cable %s\n", |
6df3efcc JW |
742 | (lp->media_status & 0x0010 ? "ok" : "problem")); |
743 | if (dev->if_port == 0) { | |
744 | if (media & 0x8000) { | |
745 | if (media & 0x0800) | |
746 | netdev_info(dev, "flipped to 10baseT\n"); | |
747 | else | |
f64e9697 | 748 | tc589_set_xcvr(dev, 2); |
6df3efcc JW |
749 | } else if (media & 0x4000) { |
750 | if (media & 0x0010) | |
751 | tc589_set_xcvr(dev, 1); | |
752 | else | |
753 | netdev_info(dev, "flipped to 10base2\n"); | |
754 | } | |
755 | } | |
756 | lp->media_status = media; | |
1da177e4 | 757 | } |
f64e9697 | 758 | |
6df3efcc JW |
759 | EL3WINDOW(1); |
760 | spin_unlock_irqrestore(&lp->lock, flags); | |
1da177e4 LT |
761 | |
762 | reschedule: | |
6df3efcc JW |
763 | lp->media.expires = jiffies + HZ; |
764 | add_timer(&lp->media); | |
1da177e4 LT |
765 | } |
766 | ||
767 | static struct net_device_stats *el3_get_stats(struct net_device *dev) | |
768 | { | |
6df3efcc JW |
769 | struct el3_private *lp = netdev_priv(dev); |
770 | unsigned long flags; | |
771 | struct pcmcia_device *link = lp->p_dev; | |
1da177e4 | 772 | |
6df3efcc JW |
773 | if (pcmcia_dev_present(link)) { |
774 | spin_lock_irqsave(&lp->lock, flags); | |
775 | update_stats(dev); | |
776 | spin_unlock_irqrestore(&lp->lock, flags); | |
777 | } | |
778 | return &dev->stats; | |
1da177e4 LT |
779 | } |
780 | ||
6df3efcc JW |
781 | /* Update statistics. We change to register window 6, so this should be run |
782 | * single-threaded if the device is active. This is expected to be a rare | |
783 | * operation, and it's simpler for the rest of the driver to assume that | |
784 | * window 1 is always valid rather than use a special window-state variable. | |
785 | * | |
786 | * Caller must hold the lock for this | |
1da177e4 | 787 | */ |
6df3efcc | 788 | |
1da177e4 LT |
789 | static void update_stats(struct net_device *dev) |
790 | { | |
6df3efcc JW |
791 | unsigned int ioaddr = dev->base_addr; |
792 | ||
793 | netdev_dbg(dev, "updating the statistics.\n"); | |
794 | /* Turn off statistics updates while reading. */ | |
795 | outw(StatsDisable, ioaddr + EL3_CMD); | |
796 | /* Switch to the stats window, and read everything. */ | |
797 | EL3WINDOW(6); | |
798 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); | |
799 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
800 | /* Multiple collisions. */ | |
801 | inb(ioaddr + 2); | |
802 | dev->stats.collisions += inb(ioaddr + 3); | |
803 | dev->stats.tx_window_errors += inb(ioaddr + 4); | |
804 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); | |
805 | dev->stats.tx_packets += inb(ioaddr + 6); | |
806 | /* Rx packets */ | |
807 | inb(ioaddr + 7); | |
808 | /* Tx deferrals */ | |
809 | inb(ioaddr + 8); | |
810 | /* Rx octets */ | |
811 | inw(ioaddr + 10); | |
812 | /* Tx octets */ | |
813 | inw(ioaddr + 12); | |
814 | ||
815 | /* Back to window 1, and turn statistics back on. */ | |
816 | EL3WINDOW(1); | |
817 | outw(StatsEnable, ioaddr + EL3_CMD); | |
1da177e4 LT |
818 | } |
819 | ||
820 | static int el3_rx(struct net_device *dev) | |
821 | { | |
6df3efcc JW |
822 | unsigned int ioaddr = dev->base_addr; |
823 | int worklimit = 32; | |
824 | short rx_status; | |
f64e9697 | 825 | |
6df3efcc | 826 | netdev_dbg(dev, "in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
f64e9697 | 827 | inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS)); |
6df3efcc | 828 | while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) && |
b9bdcd9b | 829 | worklimit > 0) { |
6df3efcc JW |
830 | worklimit--; |
831 | if (rx_status & 0x4000) { /* Error, update stats. */ | |
832 | short error = rx_status & 0x3800; | |
833 | dev->stats.rx_errors++; | |
834 | switch (error) { | |
835 | case 0x0000: | |
836 | dev->stats.rx_over_errors++; | |
837 | break; | |
838 | case 0x0800: | |
839 | dev->stats.rx_length_errors++; | |
840 | break; | |
841 | case 0x1000: | |
842 | dev->stats.rx_frame_errors++; | |
843 | break; | |
844 | case 0x1800: | |
845 | dev->stats.rx_length_errors++; | |
846 | break; | |
847 | case 0x2000: | |
848 | dev->stats.rx_frame_errors++; | |
849 | break; | |
850 | case 0x2800: | |
851 | dev->stats.rx_crc_errors++; | |
852 | break; | |
853 | } | |
854 | } else { | |
855 | short pkt_len = rx_status & 0x7ff; | |
856 | struct sk_buff *skb; | |
857 | ||
858 | skb = netdev_alloc_skb(dev, pkt_len + 5); | |
859 | ||
860 | netdev_dbg(dev, " Receiving packet size %d status %4.4x.\n", | |
f64e9697 | 861 | pkt_len, rx_status); |
6df3efcc JW |
862 | if (skb != NULL) { |
863 | skb_reserve(skb, 2); | |
864 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), | |
1da177e4 | 865 | (pkt_len+3)>>2); |
6df3efcc JW |
866 | skb->protocol = eth_type_trans(skb, dev); |
867 | netif_rx(skb); | |
868 | dev->stats.rx_packets++; | |
869 | dev->stats.rx_bytes += pkt_len; | |
870 | } else { | |
871 | netdev_dbg(dev, "couldn't allocate a sk_buff of size %d.\n", | |
f64e9697 | 872 | pkt_len); |
6df3efcc JW |
873 | dev->stats.rx_dropped++; |
874 | } | |
875 | } | |
876 | /* Pop the top of the Rx FIFO */ | |
877 | tc589_wait_for_completion(dev, RxDiscard); | |
1da177e4 | 878 | } |
6df3efcc JW |
879 | if (worklimit == 0) |
880 | netdev_warn(dev, "too much work in el3_rx!\n"); | |
881 | return 0; | |
1da177e4 LT |
882 | } |
883 | ||
e445bb4e | 884 | static void set_rx_mode(struct net_device *dev) |
1da177e4 | 885 | { |
6df3efcc JW |
886 | unsigned int ioaddr = dev->base_addr; |
887 | u16 opts = SetRxFilter | RxStation | RxBroadcast; | |
888 | ||
889 | if (dev->flags & IFF_PROMISC) | |
890 | opts |= RxMulticast | RxProm; | |
891 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) | |
892 | opts |= RxMulticast; | |
893 | outw(opts, ioaddr + EL3_CMD); | |
1da177e4 LT |
894 | } |
895 | ||
e445bb4e KK |
896 | static void set_multicast_list(struct net_device *dev) |
897 | { | |
898 | struct el3_private *priv = netdev_priv(dev); | |
899 | unsigned long flags; | |
900 | ||
901 | spin_lock_irqsave(&priv->lock, flags); | |
902 | set_rx_mode(dev); | |
903 | spin_unlock_irqrestore(&priv->lock, flags); | |
904 | } | |
905 | ||
1da177e4 LT |
906 | static int el3_close(struct net_device *dev) |
907 | { | |
6df3efcc JW |
908 | struct el3_private *lp = netdev_priv(dev); |
909 | struct pcmcia_device *link = lp->p_dev; | |
910 | unsigned int ioaddr = dev->base_addr; | |
911 | ||
912 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); | |
913 | ||
914 | if (pcmcia_dev_present(link)) { | |
915 | /* Turn off statistics ASAP. We update dev->stats below. */ | |
916 | outw(StatsDisable, ioaddr + EL3_CMD); | |
917 | ||
918 | /* Disable the receiver and transmitter. */ | |
919 | outw(RxDisable, ioaddr + EL3_CMD); | |
920 | outw(TxDisable, ioaddr + EL3_CMD); | |
921 | ||
922 | if (dev->if_port == 2) | |
923 | /* Turn off thinnet power. Green! */ | |
924 | outw(StopCoax, ioaddr + EL3_CMD); | |
925 | else if (dev->if_port == 1) { | |
926 | /* Disable link beat and jabber */ | |
927 | EL3WINDOW(4); | |
928 | outw(0, ioaddr + WN4_MEDIA); | |
929 | } | |
1da177e4 | 930 | |
6df3efcc JW |
931 | /* Switching back to window 0 disables the IRQ. */ |
932 | EL3WINDOW(0); | |
933 | /* But we explicitly zero the IRQ line select anyway. */ | |
934 | outw(0x0f00, ioaddr + WN0_IRQ); | |
f64e9697 | 935 | |
6df3efcc JW |
936 | /* Check if the card still exists */ |
937 | if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000) | |
938 | update_stats(dev); | |
1da177e4 | 939 | } |
f64e9697 | 940 | |
6df3efcc JW |
941 | link->open--; |
942 | netif_stop_queue(dev); | |
943 | del_timer_sync(&lp->media); | |
f64e9697 | 944 | |
6df3efcc | 945 | return 0; |
1da177e4 LT |
946 | } |
947 | ||
25f8f54f | 948 | static const struct pcmcia_device_id tc589_ids[] = { |
7ffec58c DB |
949 | PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562), |
950 | PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77), | |
951 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589), | |
952 | PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202), | |
f0a3a153 KK |
953 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"), |
954 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"), | |
7ffec58c DB |
955 | PCMCIA_DEVICE_NULL, |
956 | }; | |
957 | MODULE_DEVICE_TABLE(pcmcia, tc589_ids); | |
958 | ||
1da177e4 LT |
959 | static struct pcmcia_driver tc589_driver = { |
960 | .owner = THIS_MODULE, | |
2e9b981a | 961 | .name = "3c589_cs", |
15b99ac1 | 962 | .probe = tc589_probe, |
cc3b4866 | 963 | .remove = tc589_detach, |
f64e9697 | 964 | .id_table = tc589_ids, |
98e4c28b DB |
965 | .suspend = tc589_suspend, |
966 | .resume = tc589_resume, | |
1da177e4 | 967 | }; |
fdd3f29e | 968 | module_pcmcia_driver(tc589_driver); |