1 | /* 3c574.c: A PCMCIA ethernet driver for the 3com 3c574 "RoadRunner". |
2 | |
3 | Written 1993-1998 by |
4 | Donald Becker, becker@scyld.com, (driver core) and |
5 | David Hinds, dahinds@users.sourceforge.net (from his PC card code). |
6 | Locking fixes (C) Copyright 2003 Red Hat Inc |
7 | |
8 | This software may be used and distributed according to the terms of |
9 | the GNU General Public License, incorporated herein by reference. |
10 | |
11 | This driver derives from Donald Becker's 3c509 core, which has the |
12 | following copyright: |
13 | Copyright 1993 United States Government as represented by the |
14 | Director, National Security Agency. |
15 | |
16 | |
17 | */ |
18 | |
19 | /* |
20 | Theory of Operation |
21 | |
22 | I. Board Compatibility |
23 | |
24 | This device driver is designed for the 3Com 3c574 PC card Fast Ethernet |
25 | Adapter. |
26 | |
27 | II. Board-specific settings |
28 | |
29 | None -- PC cards are autoconfigured. |
30 | |
31 | III. Driver operation |
32 | |
33 | The 3c574 uses a Boomerang-style interface, without the bus-master capability. |
34 | See the Boomerang driver and documentation for most details. |
35 | |
36 | IV. Notes and chip documentation. |
37 | |
38 | Two added registers are used to enhance PIO performance, RunnerRdCtrl and |
39 | RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the |
40 | count of word (16 bits) reads or writes the driver is about to do to the Rx |
41 | or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card |
42 | translation latency by buffering the I/O operations with an 8 word FIFO. |
43 | Note: No other chip accesses are permitted when this buffer is used. |
44 | |
45 | A second enhancement is that both attribute and common memory space |
46 | 0x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster |
47 | with *some* PCcard bridges) may be used instead of I/O operations. |
48 | This is enabled by setting the 0x10 bit in the PCMCIA LAN COR. |
49 | |
50 | Some slow PC card bridges work better if they never see a WAIT signal. |
51 | This is configured by setting the 0x20 bit in the PCMCIA LAN COR. |
52 | Only do this after testing that it is reliable and improves performance. |
53 | |
54 | The upper five bits of RunnerRdCtrl are used to window into PCcard |
55 | configuration space registers. Window 0 is the regular Boomerang/Odie |
56 | register set, 1-5 are various PC card control registers, and 16-31 are |
57 | the (reversed!) CIS table. |
58 | |
59 | A final note: writing the InternalConfig register in window 3 with an |
60 | invalid ramWidth is Very Bad. |
61 | |
62 | V. References |
63 | |
64 | http://www.scyld.com/expert/NWay.html |
65 | http://www.national.com/opf/DP/DP83840A.html |
66 | |
67 | Thanks to Terry Murphy of 3Com for providing development information for |
68 | earlier 3Com products. |
69 | |
70 | */ |
71 | |
72 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
73 | |
74 | #include <linux/module.h> |
75 | #include <linux/kernel.h> |
76 | #include <linux/slab.h> |
77 | #include <linux/string.h> |
78 | #include <linux/timer.h> |
79 | #include <linux/interrupt.h> |
80 | #include <linux/in.h> |
81 | #include <linux/delay.h> |
82 | #include <linux/netdevice.h> |
83 | #include <linux/etherdevice.h> |
84 | #include <linux/skbuff.h> |
85 | #include <linux/if_arp.h> |
86 | #include <linux/ioport.h> |
87 | #include <linux/bitops.h> |
88 | #include <linux/mii.h> |
89 | |
90 | #include <pcmcia/cistpl.h> |
91 | #include <pcmcia/cisreg.h> |
92 | #include <pcmcia/ciscode.h> |
93 | #include <pcmcia/ds.h> |
94 | |
95 | #include <linux/uaccess.h> |
96 | #include <asm/io.h> |
97 | |
98 | /*====================================================================*/ |
99 | |
100 | /* Module parameters */ |
101 | |
102 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>" ); |
103 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver" ); |
104 | MODULE_LICENSE("GPL" ); |
105 | |
106 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
107 | |
108 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ |
109 | INT_MODULE_PARM(max_interrupt_work, 32); |
110 | |
111 | /* Force full duplex modes? */ |
112 | INT_MODULE_PARM(full_duplex, 0); |
113 | |
114 | /* Autodetect link polarity reversal? */ |
115 | INT_MODULE_PARM(auto_polarity, 1); |
116 | |
117 | |
118 | /*====================================================================*/ |
119 | |
120 | /* Time in jiffies before concluding the transmitter is hung. */ |
121 | #define TX_TIMEOUT ((800*HZ)/1000) |
122 | |
123 | /* To minimize the size of the driver source and make the driver more |
124 | readable not all constants are symbolically defined. |
125 | You'll need the manual if you want to understand driver details anyway. */ |
126 | /* Offsets from base I/O address. */ |
127 | #define EL3_DATA 0x00 |
128 | #define EL3_CMD 0x0e |
129 | #define EL3_STATUS 0x0e |
130 | |
131 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) |
132 | |
133 | /* The top five bits written to EL3_CMD are a command, the lower |
134 | 11 bits are the parameter, if applicable. */ |
135 | enum el3_cmds { |
136 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, |
137 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, |
138 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, |
139 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, |
140 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, |
141 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, |
142 | StatsDisable = 22<<11, StopCoax = 23<<11, |
143 | }; |
144 | |
145 | enum elxl_status { |
146 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, |
147 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, |
148 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; |
149 | |
150 | /* The SetRxFilter command accepts the following classes: */ |
151 | enum RxFilter { |
152 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 |
153 | }; |
154 | |
155 | enum Window0 { |
156 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ |
157 | IntrStatus=0x0E, /* Valid in all windows. */ |
158 | }; |
159 | /* These assumes the larger EEPROM. */ |
160 | enum Win0_EEPROM_cmds { |
161 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, |
162 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ |
163 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ |
164 | }; |
165 | |
166 | /* Register window 1 offsets, the window used in normal operation. |
167 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. |
168 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ |
169 | enum Window1 { |
170 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, |
171 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, |
172 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ |
173 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, |
174 | }; |
175 | |
176 | enum Window3 { /* Window 3: MAC/config bits. */ |
177 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, |
178 | }; |
179 | enum wn3_config { |
180 | Ram_size = 7, |
181 | Ram_width = 8, |
182 | Ram_speed = 0x30, |
183 | Rom_size = 0xc0, |
184 | Ram_split_shift = 16, |
185 | Ram_split = 3 << Ram_split_shift, |
186 | Xcvr_shift = 20, |
187 | Xcvr = 7 << Xcvr_shift, |
188 | Autoselect = 0x1000000, |
189 | }; |
190 | |
191 | enum Window4 { /* Window 4: Xcvr/media bits. */ |
192 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, |
193 | }; |
194 | |
195 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ |
196 | |
197 | struct el3_private { |
198 | struct pcmcia_device *p_dev; |
199 | u16 advertising, partner; /* NWay media advertisement */ |
200 | unsigned char phys; /* MII device address */ |
201 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ |
202 | /* for transceiver monitoring */ |
203 | struct timer_list media; |
204 | unsigned short media_status; |
205 | unsigned short fast_poll; |
206 | unsigned long last_irq; |
207 | spinlock_t window_lock; /* Guards the Window selection */ |
208 | }; |
209 | |
210 | /* Set iff a MII transceiver on any interface requires mdio preamble. |
211 | This only set with the original DP83840 on older 3c905 boards, so the extra |
212 | code size of a per-interface flag is not worthwhile. */ |
213 | static char mii_preamble_required = 0; |
214 | |
215 | /* Index of functions. */ |
216 | |
217 | static int tc574_config(struct pcmcia_device *link); |
218 | static void tc574_release(struct pcmcia_device *link); |
219 | |
220 | static void mdio_sync(unsigned int ioaddr, int bits); |
221 | static int mdio_read(unsigned int ioaddr, int phy_id, int location); |
222 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, |
223 | int value); |
224 | static unsigned short read_eeprom(unsigned int ioaddr, int index); |
225 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
226 | |
227 | static void tc574_reset(struct net_device *dev); |
228 | static void media_check(struct timer_list *t); |
229 | static int el3_open(struct net_device *dev); |
230 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
231 | struct net_device *dev); |
232 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
233 | static void update_stats(struct net_device *dev); |
234 | static struct net_device_stats *el3_get_stats(struct net_device *dev); |
235 | static int el3_rx(struct net_device *dev, int worklimit); |
236 | static int el3_close(struct net_device *dev); |
237 | static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue); |
238 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
239 | static void set_rx_mode(struct net_device *dev); |
240 | static void set_multicast_list(struct net_device *dev); |
241 | |
242 | static void tc574_detach(struct pcmcia_device *p_dev); |
243 | |
244 | /* |
245 | tc574_attach() creates an "instance" of the driver, allocating |
246 | local data structures for one device. The device is registered |
247 | with Card Services. |
248 | */ |
249 | static const struct net_device_ops el3_netdev_ops = { |
250 | .ndo_open = el3_open, |
251 | .ndo_stop = el3_close, |
252 | .ndo_start_xmit = el3_start_xmit, |
253 | .ndo_tx_timeout = el3_tx_timeout, |
254 | .ndo_get_stats = el3_get_stats, |
255 | .ndo_eth_ioctl = el3_ioctl, |
256 | .ndo_set_rx_mode = set_multicast_list, |
257 | .ndo_set_mac_address = eth_mac_addr, |
258 | .ndo_validate_addr = eth_validate_addr, |
259 | }; |
260 | |
261 | static int tc574_probe(struct pcmcia_device *link) |
262 | { |
263 | struct el3_private *lp; |
264 | struct net_device *dev; |
265 | |
266 | dev_dbg(&link->dev, "3c574_attach()\n" ); |
267 | |
268 | /* Create the PC card device object. */ |
269 | dev = alloc_etherdev(sizeof(struct el3_private)); |
270 | if (!dev) |
271 | return -ENOMEM; |
272 | lp = netdev_priv(dev); |
273 | link->priv = dev; |
274 | lp->p_dev = link; |
275 | |
276 | spin_lock_init(&lp->window_lock); |
277 | link->resource[0]->end = 32; |
278 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; |
279 | link->config_flags |= CONF_ENABLE_IRQ; |
280 | link->config_index = 1; |
281 | |
282 | dev->netdev_ops = &el3_netdev_ops; |
283 | dev->watchdog_timeo = TX_TIMEOUT; |
284 | |
285 | return tc574_config(link); |
286 | } |
287 | |
288 | static void tc574_detach(struct pcmcia_device *link) |
289 | { |
290 | struct net_device *dev = link->priv; |
291 | |
292 | dev_dbg(&link->dev, "3c574_detach()\n" ); |
293 | |
294 | unregister_netdev(dev); |
295 | |
296 | tc574_release(link); |
297 | |
298 | free_netdev(dev); |
299 | } /* tc574_detach */ |
300 | |
301 | static const char *ram_split[] = {"5:3" , "3:1" , "1:1" , "3:5" }; |
302 | |
303 | static int tc574_config(struct pcmcia_device *link) |
304 | { |
305 | struct net_device *dev = link->priv; |
306 | struct el3_private *lp = netdev_priv(dev); |
307 | int ret, i, j; |
308 | __be16 addr[ETH_ALEN / 2]; |
309 | unsigned int ioaddr; |
310 | char *cardname; |
311 | __u32 config; |
312 | u8 *buf; |
313 | size_t len; |
314 | |
315 | dev_dbg(&link->dev, "3c574_config()\n" ); |
316 | |
317 | link->io_lines = 16; |
318 | |
319 | for (i = j = 0; j < 0x400; j += 0x20) { |
320 | link->resource[0]->start = j ^ 0x300; |
321 | i = pcmcia_request_io(p_dev: link); |
322 | if (i == 0) |
323 | break; |
324 | } |
325 | if (i != 0) |
326 | goto failed; |
327 | |
328 | ret = pcmcia_request_irq(p_dev: link, handler: el3_interrupt); |
329 | if (ret) |
330 | goto failed; |
331 | |
332 | ret = pcmcia_enable_device(p_dev: link); |
333 | if (ret) |
334 | goto failed; |
335 | |
336 | dev->irq = link->irq; |
337 | dev->base_addr = link->resource[0]->start; |
338 | |
339 | ioaddr = dev->base_addr; |
340 | |
341 | /* The 3c574 normally uses an EEPROM for configuration info, including |
342 | the hardware address. The future products may include a modem chip |
343 | and put the address in the CIS. */ |
344 | |
345 | len = pcmcia_get_tuple(p_dev: link, code: 0x88, buf: &buf); |
346 | if (buf && len >= 6) { |
347 | for (i = 0; i < 3; i++) |
348 | addr[i] = htons(le16_to_cpu(buf[i * 2])); |
349 | kfree(objp: buf); |
350 | } else { |
351 | kfree(objp: buf); /* 0 < len < 6 */ |
352 | EL3WINDOW(0); |
353 | for (i = 0; i < 3; i++) |
354 | addr[i] = htons(read_eeprom(ioaddr, i + 10)); |
355 | if (addr[0] == htons(0x6060)) { |
356 | pr_notice("IO port conflict at 0x%03lx-0x%03lx\n" , |
357 | dev->base_addr, dev->base_addr+15); |
358 | goto failed; |
359 | } |
360 | } |
361 | eth_hw_addr_set(dev, addr: (u8 *)addr); |
362 | if (link->prod_id[1]) |
363 | cardname = link->prod_id[1]; |
364 | else |
365 | cardname = "3Com 3c574" ; |
366 | |
367 | { |
368 | u_char mcr; |
369 | outw(value: 2<<11, port: ioaddr + RunnerRdCtrl); |
370 | mcr = inb(port: ioaddr + 2); |
371 | outw(value: 0<<11, port: ioaddr + RunnerRdCtrl); |
372 | pr_info(" ASIC rev %d," , mcr>>3); |
373 | EL3WINDOW(3); |
374 | config = inl(port: ioaddr + Wn3_Config); |
375 | lp->default_media = (config & Xcvr) >> Xcvr_shift; |
376 | lp->autoselect = config & Autoselect ? 1 : 0; |
377 | } |
378 | |
379 | timer_setup(&lp->media, media_check, 0); |
380 | |
381 | { |
382 | int phy; |
383 | |
384 | /* Roadrunner only: Turn on the MII transceiver */ |
385 | outw(value: 0x8040, port: ioaddr + Wn3_Options); |
386 | mdelay(1); |
387 | outw(value: 0xc040, port: ioaddr + Wn3_Options); |
388 | tc574_wait_for_completion(dev, cmd: TxReset); |
389 | tc574_wait_for_completion(dev, cmd: RxReset); |
390 | mdelay(1); |
391 | outw(value: 0x8040, port: ioaddr + Wn3_Options); |
392 | |
393 | EL3WINDOW(4); |
394 | for (phy = 1; phy <= 32; phy++) { |
395 | int mii_status; |
396 | mdio_sync(ioaddr, bits: 32); |
397 | mii_status = mdio_read(ioaddr, phy_id: phy & 0x1f, location: 1); |
398 | if (mii_status != 0xffff) { |
399 | lp->phys = phy & 0x1f; |
400 | dev_dbg(&link->dev, " MII transceiver at " |
401 | "index %d, status %x.\n" , |
402 | phy, mii_status); |
403 | if ((mii_status & 0x0040) == 0) |
404 | mii_preamble_required = 1; |
405 | break; |
406 | } |
407 | } |
408 | if (phy > 32) { |
409 | pr_notice(" No MII transceivers found!\n" ); |
410 | goto failed; |
411 | } |
412 | i = mdio_read(ioaddr, phy_id: lp->phys, location: 16) | 0x40; |
413 | mdio_write(ioaddr, phy_id: lp->phys, location: 16, value: i); |
414 | lp->advertising = mdio_read(ioaddr, phy_id: lp->phys, location: 4); |
415 | if (full_duplex) { |
416 | /* Only advertise the FD media types. */ |
417 | lp->advertising &= ~0x02a0; |
418 | mdio_write(ioaddr, phy_id: lp->phys, location: 4, value: lp->advertising); |
419 | } |
420 | } |
421 | |
422 | SET_NETDEV_DEV(dev, &link->dev); |
423 | |
424 | if (register_netdev(dev) != 0) { |
425 | pr_notice("register_netdev() failed\n" ); |
426 | goto failed; |
427 | } |
428 | |
429 | netdev_info(dev, format: "%s at io %#3lx, irq %d, hw_addr %pM\n" , |
430 | cardname, dev->base_addr, dev->irq, dev->dev_addr); |
431 | netdev_info(dev, format: " %dK FIFO split %s Rx:Tx, %sMII interface.\n" , |
432 | 8 << (config & Ram_size), |
433 | ram_split[(config & Ram_split) >> Ram_split_shift], |
434 | config & Autoselect ? "autoselect " : "" ); |
435 | |
436 | return 0; |
437 | |
438 | failed: |
439 | tc574_release(link); |
440 | return -ENODEV; |
441 | |
442 | } /* tc574_config */ |
443 | |
444 | static void tc574_release(struct pcmcia_device *link) |
445 | { |
446 | pcmcia_disable_device(p_dev: link); |
447 | } |
448 | |
449 | static int tc574_suspend(struct pcmcia_device *link) |
450 | { |
451 | struct net_device *dev = link->priv; |
452 | |
453 | if (link->open) |
454 | netif_device_detach(dev); |
455 | |
456 | return 0; |
457 | } |
458 | |
459 | static int tc574_resume(struct pcmcia_device *link) |
460 | { |
461 | struct net_device *dev = link->priv; |
462 | |
463 | if (link->open) { |
464 | tc574_reset(dev); |
465 | netif_device_attach(dev); |
466 | } |
467 | |
468 | return 0; |
469 | } |
470 | |
471 | static void dump_status(struct net_device *dev) |
472 | { |
473 | unsigned int ioaddr = dev->base_addr; |
474 | EL3WINDOW(1); |
475 | netdev_info(dev, format: " irq status %04x, rx status %04x, tx status %02x, tx free %04x\n" , |
476 | inw(port: ioaddr+EL3_STATUS), |
477 | inw(port: ioaddr+RxStatus), inb(port: ioaddr+TxStatus), |
478 | inw(port: ioaddr+TxFree)); |
479 | EL3WINDOW(4); |
480 | netdev_info(dev, format: " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n" , |
481 | inw(port: ioaddr+0x04), inw(port: ioaddr+0x06), |
482 | inw(port: ioaddr+0x08), inw(port: ioaddr+0x0a)); |
483 | EL3WINDOW(1); |
484 | } |
485 | |
486 | /* |
487 | Use this for commands that may take time to finish |
488 | */ |
489 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) |
490 | { |
491 | int i = 1500; |
492 | outw(value: cmd, port: dev->base_addr + EL3_CMD); |
493 | while (--i > 0) |
494 | if (!(inw(port: dev->base_addr + EL3_STATUS) & 0x1000)) break; |
495 | if (i == 0) |
496 | netdev_notice(dev, format: "command 0x%04x did not complete!\n" , cmd); |
497 | } |
498 | |
499 | /* Read a word from the EEPROM using the regular EEPROM access register. |
500 | Assume that we are in register window zero. |
501 | */ |
502 | static unsigned short read_eeprom(unsigned int ioaddr, int index) |
503 | { |
504 | int timer; |
505 | outw(value: EEPROM_Read + index, port: ioaddr + Wn0EepromCmd); |
506 | /* Pause for at least 162 usec for the read to take place. */ |
507 | for (timer = 1620; timer >= 0; timer--) { |
508 | if ((inw(port: ioaddr + Wn0EepromCmd) & 0x8000) == 0) |
509 | break; |
510 | } |
511 | return inw(port: ioaddr + Wn0EepromData); |
512 | } |
513 | |
514 | /* MII transceiver control section. |
515 | Read and write the MII registers using software-generated serial |
516 | MDIO protocol. See the MII specifications or DP83840A data sheet |
517 | for details. |
518 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the |
519 | slow PC card interface. */ |
520 | |
521 | #define MDIO_SHIFT_CLK 0x01 |
522 | #define MDIO_DIR_WRITE 0x04 |
523 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) |
524 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) |
525 | #define MDIO_DATA_READ 0x02 |
526 | #define MDIO_ENB_IN 0x00 |
527 | |
528 | /* Generate the preamble required for initial synchronization and |
529 | a few older transceivers. */ |
530 | static void mdio_sync(unsigned int ioaddr, int bits) |
531 | { |
532 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
533 | |
534 | /* Establish sync by sending at least 32 logic ones. */ |
535 | while (-- bits >= 0) { |
536 | outw(MDIO_DATA_WRITE1, port: mdio_addr); |
537 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, port: mdio_addr); |
538 | } |
539 | } |
540 | |
541 | static int mdio_read(unsigned int ioaddr, int phy_id, int location) |
542 | { |
543 | int i; |
544 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; |
545 | unsigned int retval = 0; |
546 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
547 | |
548 | if (mii_preamble_required) |
549 | mdio_sync(ioaddr, bits: 32); |
550 | |
551 | /* Shift the read command bits out. */ |
552 | for (i = 14; i >= 0; i--) { |
553 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
554 | outw(value: dataval, port: mdio_addr); |
555 | outw(value: dataval | MDIO_SHIFT_CLK, port: mdio_addr); |
556 | } |
557 | /* Read the two transition, 16 data, and wire-idle bits. */ |
558 | for (i = 19; i > 0; i--) { |
559 | outw(MDIO_ENB_IN, port: mdio_addr); |
560 | retval = (retval << 1) | ((inw(port: mdio_addr) & MDIO_DATA_READ) ? 1 : 0); |
561 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, port: mdio_addr); |
562 | } |
563 | return (retval>>1) & 0xffff; |
564 | } |
565 | |
566 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value) |
567 | { |
568 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; |
569 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
570 | int i; |
571 | |
572 | if (mii_preamble_required) |
573 | mdio_sync(ioaddr, bits: 32); |
574 | |
575 | /* Shift the command bits out. */ |
576 | for (i = 31; i >= 0; i--) { |
577 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
578 | outw(value: dataval, port: mdio_addr); |
579 | outw(value: dataval | MDIO_SHIFT_CLK, port: mdio_addr); |
580 | } |
581 | /* Leave the interface idle. */ |
582 | for (i = 1; i >= 0; i--) { |
583 | outw(MDIO_ENB_IN, port: mdio_addr); |
584 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, port: mdio_addr); |
585 | } |
586 | } |
587 | |
588 | /* Reset and restore all of the 3c574 registers. */ |
589 | static void tc574_reset(struct net_device *dev) |
590 | { |
591 | struct el3_private *lp = netdev_priv(dev); |
592 | int i; |
593 | unsigned int ioaddr = dev->base_addr; |
594 | unsigned long flags; |
595 | |
596 | tc574_wait_for_completion(dev, cmd: TotalReset|0x10); |
597 | |
598 | spin_lock_irqsave(&lp->window_lock, flags); |
599 | /* Clear any transactions in progress. */ |
600 | outw(value: 0, port: ioaddr + RunnerWrCtrl); |
601 | outw(value: 0, port: ioaddr + RunnerRdCtrl); |
602 | |
603 | /* Set the station address and mask. */ |
604 | EL3WINDOW(2); |
605 | for (i = 0; i < 6; i++) |
606 | outb(value: dev->dev_addr[i], port: ioaddr + i); |
607 | for (; i < 12; i+=2) |
608 | outw(value: 0, port: ioaddr + i); |
609 | |
610 | /* Reset config options */ |
611 | EL3WINDOW(3); |
612 | outb(value: (dev->mtu > 1500 ? 0x40 : 0), port: ioaddr + Wn3_MAC_Ctrl); |
613 | outl(value: (lp->autoselect ? 0x01000000 : 0) | 0x0062001b, |
614 | port: ioaddr + Wn3_Config); |
615 | /* Roadrunner only: Turn on the MII transceiver. */ |
616 | outw(value: 0x8040, port: ioaddr + Wn3_Options); |
617 | mdelay(1); |
618 | outw(value: 0xc040, port: ioaddr + Wn3_Options); |
619 | EL3WINDOW(1); |
620 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
621 | |
622 | tc574_wait_for_completion(dev, cmd: TxReset); |
623 | tc574_wait_for_completion(dev, cmd: RxReset); |
624 | mdelay(1); |
625 | spin_lock_irqsave(&lp->window_lock, flags); |
626 | EL3WINDOW(3); |
627 | outw(value: 0x8040, port: ioaddr + Wn3_Options); |
628 | |
629 | /* Switch to the stats window, and clear all stats by reading. */ |
630 | outw(value: StatsDisable, port: ioaddr + EL3_CMD); |
631 | EL3WINDOW(6); |
632 | for (i = 0; i < 10; i++) |
633 | inb(port: ioaddr + i); |
634 | inw(port: ioaddr + 10); |
635 | inw(port: ioaddr + 12); |
636 | EL3WINDOW(4); |
637 | inb(port: ioaddr + 12); |
638 | inb(port: ioaddr + 13); |
639 | |
640 | /* .. enable any extra statistics bits.. */ |
641 | outw(value: 0x0040, port: ioaddr + Wn4_NetDiag); |
642 | |
643 | EL3WINDOW(1); |
644 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
645 | |
646 | /* .. re-sync MII and re-fill what NWay is advertising. */ |
647 | mdio_sync(ioaddr, bits: 32); |
648 | mdio_write(ioaddr, phy_id: lp->phys, location: 4, value: lp->advertising); |
649 | if (!auto_polarity) { |
650 | /* works for TDK 78Q2120 series MII's */ |
651 | i = mdio_read(ioaddr, phy_id: lp->phys, location: 16) | 0x20; |
652 | mdio_write(ioaddr, phy_id: lp->phys, location: 16, value: i); |
653 | } |
654 | |
655 | spin_lock_irqsave(&lp->window_lock, flags); |
656 | /* Switch to register set 1 for normal use, just for TxFree. */ |
657 | set_rx_mode(dev); |
658 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
659 | outw(value: StatsEnable, port: ioaddr + EL3_CMD); /* Turn on statistics. */ |
660 | outw(value: RxEnable, port: ioaddr + EL3_CMD); /* Enable the receiver. */ |
661 | outw(value: TxEnable, port: ioaddr + EL3_CMD); /* Enable transmitter. */ |
662 | /* Allow status bits to be seen. */ |
663 | outw(value: SetStatusEnb | 0xff, port: ioaddr + EL3_CMD); |
664 | /* Ack all pending events, and set active indicator mask. */ |
665 | outw(value: AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, |
666 | port: ioaddr + EL3_CMD); |
667 | outw(value: SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
668 | | AdapterFailure | RxEarly, port: ioaddr + EL3_CMD); |
669 | } |
670 | |
671 | static int el3_open(struct net_device *dev) |
672 | { |
673 | struct el3_private *lp = netdev_priv(dev); |
674 | struct pcmcia_device *link = lp->p_dev; |
675 | |
676 | if (!pcmcia_dev_present(p_dev: link)) |
677 | return -ENODEV; |
678 | |
679 | link->open++; |
680 | netif_start_queue(dev); |
681 | |
682 | tc574_reset(dev); |
683 | lp->media.expires = jiffies + HZ; |
684 | add_timer(timer: &lp->media); |
685 | |
686 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n" , |
687 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
688 | |
689 | return 0; |
690 | } |
691 | |
692 | static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue) |
693 | { |
694 | unsigned int ioaddr = dev->base_addr; |
695 | |
696 | netdev_notice(dev, format: "Transmit timed out!\n" ); |
697 | dump_status(dev); |
698 | dev->stats.tx_errors++; |
699 | netif_trans_update(dev); /* prevent tx timeout */ |
700 | /* Issue TX_RESET and TX_START commands. */ |
701 | tc574_wait_for_completion(dev, cmd: TxReset); |
702 | outw(value: TxEnable, port: ioaddr + EL3_CMD); |
703 | netif_wake_queue(dev); |
704 | } |
705 | |
706 | static void pop_tx_status(struct net_device *dev) |
707 | { |
708 | unsigned int ioaddr = dev->base_addr; |
709 | int i; |
710 | |
711 | /* Clear the Tx status stack. */ |
712 | for (i = 32; i > 0; i--) { |
713 | u_char tx_status = inb(port: ioaddr + TxStatus); |
714 | if (!(tx_status & 0x84)) |
715 | break; |
716 | /* reset transmitter on jabber error or underrun */ |
717 | if (tx_status & 0x30) |
718 | tc574_wait_for_completion(dev, cmd: TxReset); |
719 | if (tx_status & 0x38) { |
720 | pr_debug("%s: transmit error: status 0x%02x\n" , |
721 | dev->name, tx_status); |
722 | outw(value: TxEnable, port: ioaddr + EL3_CMD); |
723 | dev->stats.tx_aborted_errors++; |
724 | } |
725 | outb(value: 0x00, port: ioaddr + TxStatus); /* Pop the status stack. */ |
726 | } |
727 | } |
728 | |
729 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
730 | struct net_device *dev) |
731 | { |
732 | unsigned int ioaddr = dev->base_addr; |
733 | struct el3_private *lp = netdev_priv(dev); |
734 | unsigned long flags; |
735 | |
736 | pr_debug("%s: el3_start_xmit(length = %ld) called, " |
737 | "status %4.4x.\n" , dev->name, (long)skb->len, |
738 | inw(ioaddr + EL3_STATUS)); |
739 | |
740 | spin_lock_irqsave(&lp->window_lock, flags); |
741 | |
742 | dev->stats.tx_bytes += skb->len; |
743 | |
744 | /* Put out the doubleword header... */ |
745 | outw(value: skb->len, port: ioaddr + TX_FIFO); |
746 | outw(value: 0, port: ioaddr + TX_FIFO); |
747 | /* ... and the packet rounded to a doubleword. */ |
748 | outsl(port: ioaddr + TX_FIFO, addr: skb->data, count: (skb->len+3)>>2); |
749 | |
750 | /* TxFree appears only in Window 1, not offset 0x1c. */ |
751 | if (inw(port: ioaddr + TxFree) <= 1536) { |
752 | netif_stop_queue(dev); |
753 | /* Interrupt us when the FIFO has room for max-sized packet. |
754 | The threshold is in units of dwords. */ |
755 | outw(value: SetTxThreshold + (1536>>2), port: ioaddr + EL3_CMD); |
756 | } |
757 | |
758 | pop_tx_status(dev); |
759 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
760 | dev_kfree_skb(skb); |
761 | return NETDEV_TX_OK; |
762 | } |
763 | |
764 | /* The EL3 interrupt handler. */ |
765 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
766 | { |
767 | struct net_device *dev = (struct net_device *) dev_id; |
768 | struct el3_private *lp = netdev_priv(dev); |
769 | unsigned int ioaddr; |
770 | unsigned status; |
771 | int work_budget = max_interrupt_work; |
772 | int handled = 0; |
773 | |
774 | if (!netif_device_present(dev)) |
775 | return IRQ_NONE; |
776 | ioaddr = dev->base_addr; |
777 | |
778 | pr_debug("%s: interrupt, status %4.4x.\n" , |
779 | dev->name, inw(ioaddr + EL3_STATUS)); |
780 | |
781 | spin_lock(lock: &lp->window_lock); |
782 | |
783 | while ((status = inw(port: ioaddr + EL3_STATUS)) & |
784 | (IntLatch | RxComplete | RxEarly | StatsFull)) { |
785 | if (!netif_device_present(dev) || |
786 | ((status & 0xe000) != 0x2000)) { |
787 | pr_debug("%s: Interrupt from dead card\n" , dev->name); |
788 | break; |
789 | } |
790 | |
791 | handled = 1; |
792 | |
793 | if (status & RxComplete) |
794 | work_budget = el3_rx(dev, worklimit: work_budget); |
795 | |
796 | if (status & TxAvailable) { |
797 | pr_debug(" TX room bit was handled.\n" ); |
798 | /* There's room in the FIFO for a full-sized packet. */ |
799 | outw(value: AckIntr | TxAvailable, port: ioaddr + EL3_CMD); |
800 | netif_wake_queue(dev); |
801 | } |
802 | |
803 | if (status & TxComplete) |
804 | pop_tx_status(dev); |
805 | |
806 | if (status & (AdapterFailure | RxEarly | StatsFull)) { |
807 | /* Handle all uncommon interrupts. */ |
808 | if (status & StatsFull) |
809 | update_stats(dev); |
810 | if (status & RxEarly) { |
811 | work_budget = el3_rx(dev, worklimit: work_budget); |
812 | outw(value: AckIntr | RxEarly, port: ioaddr + EL3_CMD); |
813 | } |
814 | if (status & AdapterFailure) { |
815 | u16 fifo_diag; |
816 | EL3WINDOW(4); |
817 | fifo_diag = inw(port: ioaddr + Wn4_FIFODiag); |
818 | EL3WINDOW(1); |
819 | netdev_notice(dev, format: "adapter failure, FIFO diagnostic register %04x\n" , |
820 | fifo_diag); |
821 | if (fifo_diag & 0x0400) { |
822 | /* Tx overrun */ |
823 | tc574_wait_for_completion(dev, cmd: TxReset); |
824 | outw(value: TxEnable, port: ioaddr + EL3_CMD); |
825 | } |
826 | if (fifo_diag & 0x2000) { |
827 | /* Rx underrun */ |
828 | tc574_wait_for_completion(dev, cmd: RxReset); |
829 | set_rx_mode(dev); |
830 | outw(value: RxEnable, port: ioaddr + EL3_CMD); |
831 | } |
832 | outw(value: AckIntr | AdapterFailure, port: ioaddr + EL3_CMD); |
833 | } |
834 | } |
835 | |
836 | if (--work_budget < 0) { |
837 | pr_debug("%s: Too much work in interrupt, " |
838 | "status %4.4x.\n" , dev->name, status); |
839 | /* Clear all interrupts */ |
840 | outw(value: AckIntr | 0xFF, port: ioaddr + EL3_CMD); |
841 | break; |
842 | } |
843 | /* Acknowledge the IRQ. */ |
844 | outw(value: AckIntr | IntReq | IntLatch, port: ioaddr + EL3_CMD); |
845 | } |
846 | |
847 | pr_debug("%s: exiting interrupt, status %4.4x.\n" , |
848 | dev->name, inw(ioaddr + EL3_STATUS)); |
849 | |
850 | spin_unlock(lock: &lp->window_lock); |
851 | return IRQ_RETVAL(handled); |
852 | } |
853 | |
854 | /* |
855 | This timer serves two purposes: to check for missed interrupts |
856 | (and as a last resort, poll the NIC for events), and to monitor |
857 | the MII, reporting changes in cable status. |
858 | */ |
859 | static void media_check(struct timer_list *t) |
860 | { |
861 | struct el3_private *lp = from_timer(lp, t, media); |
862 | struct net_device *dev = lp->p_dev->priv; |
863 | unsigned int ioaddr = dev->base_addr; |
864 | unsigned long flags; |
865 | unsigned short /* cable, */ media, partner; |
866 | |
867 | if (!netif_device_present(dev)) |
868 | goto reschedule; |
869 | |
870 | /* Check for pending interrupt with expired latency timer: with |
871 | this, we can limp along even if the interrupt is blocked */ |
872 | if ((inw(port: ioaddr + EL3_STATUS) & IntLatch) && (inb(port: ioaddr + Timer) == 0xff)) { |
873 | if (!lp->fast_poll) |
874 | netdev_info(dev, format: "interrupt(s) dropped!\n" ); |
875 | |
876 | local_irq_save(flags); |
877 | el3_interrupt(irq: dev->irq, dev_id: dev); |
878 | local_irq_restore(flags); |
879 | |
880 | lp->fast_poll = HZ; |
881 | } |
882 | if (lp->fast_poll) { |
883 | lp->fast_poll--; |
884 | lp->media.expires = jiffies + 2*HZ/100; |
885 | add_timer(timer: &lp->media); |
886 | return; |
887 | } |
888 | |
889 | spin_lock_irqsave(&lp->window_lock, flags); |
890 | EL3WINDOW(4); |
891 | media = mdio_read(ioaddr, phy_id: lp->phys, location: 1); |
892 | partner = mdio_read(ioaddr, phy_id: lp->phys, location: 5); |
893 | EL3WINDOW(1); |
894 | |
895 | if (media != lp->media_status) { |
896 | if ((media ^ lp->media_status) & 0x0004) |
897 | netdev_info(dev, format: "%s link beat\n" , |
898 | (lp->media_status & 0x0004) ? "lost" : "found" ); |
899 | if ((media ^ lp->media_status) & 0x0020) { |
900 | lp->partner = 0; |
901 | if (lp->media_status & 0x0020) { |
902 | netdev_info(dev, format: "autonegotiation restarted\n" ); |
903 | } else if (partner) { |
904 | partner &= lp->advertising; |
905 | lp->partner = partner; |
906 | netdev_info(dev, format: "autonegotiation complete: " |
907 | "%dbaseT-%cD selected\n" , |
908 | (partner & 0x0180) ? 100 : 10, |
909 | (partner & 0x0140) ? 'F' : 'H'); |
910 | } else { |
911 | netdev_info(dev, format: "link partner did not autonegotiate\n" ); |
912 | } |
913 | |
914 | EL3WINDOW(3); |
915 | outb(value: (partner & 0x0140 ? 0x20 : 0) | |
916 | (dev->mtu > 1500 ? 0x40 : 0), port: ioaddr + Wn3_MAC_Ctrl); |
917 | EL3WINDOW(1); |
918 | |
919 | } |
920 | if (media & 0x0010) |
921 | netdev_info(dev, format: "remote fault detected\n" ); |
922 | if (media & 0x0002) |
923 | netdev_info(dev, format: "jabber detected\n" ); |
924 | lp->media_status = media; |
925 | } |
926 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
927 | |
928 | reschedule: |
929 | lp->media.expires = jiffies + HZ; |
930 | add_timer(timer: &lp->media); |
931 | } |
932 | |
933 | static struct net_device_stats *el3_get_stats(struct net_device *dev) |
934 | { |
935 | struct el3_private *lp = netdev_priv(dev); |
936 | |
937 | if (netif_device_present(dev)) { |
938 | unsigned long flags; |
939 | spin_lock_irqsave(&lp->window_lock, flags); |
940 | update_stats(dev); |
941 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
942 | } |
943 | return &dev->stats; |
944 | } |
945 | |
946 | /* Update statistics. |
947 | Surprisingly this need not be run single-threaded, but it effectively is. |
948 | The counters clear when read, so the adds must merely be atomic. |
949 | */ |
950 | static void update_stats(struct net_device *dev) |
951 | { |
952 | unsigned int ioaddr = dev->base_addr; |
953 | u8 up; |
954 | |
955 | pr_debug("%s: updating the statistics.\n" , dev->name); |
956 | |
957 | if (inw(port: ioaddr+EL3_STATUS) == 0xffff) /* No card. */ |
958 | return; |
959 | |
960 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ |
961 | /* Switch to the stats window, and read everything. */ |
962 | EL3WINDOW(6); |
963 | dev->stats.tx_carrier_errors += inb(port: ioaddr + 0); |
964 | dev->stats.tx_heartbeat_errors += inb(port: ioaddr + 1); |
965 | /* Multiple collisions. */ inb(port: ioaddr + 2); |
966 | dev->stats.collisions += inb(port: ioaddr + 3); |
967 | dev->stats.tx_window_errors += inb(port: ioaddr + 4); |
968 | dev->stats.rx_fifo_errors += inb(port: ioaddr + 5); |
969 | dev->stats.tx_packets += inb(port: ioaddr + 6); |
970 | up = inb(port: ioaddr + 9); |
971 | dev->stats.tx_packets += (up&0x30) << 4; |
972 | /* Rx packets */ inb(port: ioaddr + 7); |
973 | /* Tx deferrals */ inb(port: ioaddr + 8); |
974 | /* rx */ inw(port: ioaddr + 10); |
975 | /* tx */ inw(port: ioaddr + 12); |
976 | |
977 | EL3WINDOW(4); |
978 | /* BadSSD */ inb(port: ioaddr + 12); |
979 | up = inb(port: ioaddr + 13); |
980 | |
981 | EL3WINDOW(1); |
982 | } |
983 | |
984 | static int el3_rx(struct net_device *dev, int worklimit) |
985 | { |
986 | unsigned int ioaddr = dev->base_addr; |
987 | short rx_status; |
988 | |
989 | pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n" , |
990 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
991 | while (!((rx_status = inw(port: ioaddr + RxStatus)) & 0x8000) && |
992 | worklimit > 0) { |
993 | worklimit--; |
994 | if (rx_status & 0x4000) { /* Error, update stats. */ |
995 | short error = rx_status & 0x3800; |
996 | dev->stats.rx_errors++; |
997 | switch (error) { |
998 | case 0x0000: dev->stats.rx_over_errors++; break; |
999 | case 0x0800: dev->stats.rx_length_errors++; break; |
1000 | case 0x1000: dev->stats.rx_frame_errors++; break; |
1001 | case 0x1800: dev->stats.rx_length_errors++; break; |
1002 | case 0x2000: dev->stats.rx_frame_errors++; break; |
1003 | case 0x2800: dev->stats.rx_crc_errors++; break; |
1004 | } |
1005 | } else { |
1006 | short pkt_len = rx_status & 0x7ff; |
1007 | struct sk_buff *skb; |
1008 | |
1009 | skb = netdev_alloc_skb(dev, length: pkt_len + 5); |
1010 | |
1011 | pr_debug(" Receiving packet size %d status %4.4x.\n" , |
1012 | pkt_len, rx_status); |
1013 | if (skb != NULL) { |
1014 | skb_reserve(skb, len: 2); |
1015 | insl(port: ioaddr+RX_FIFO, addr: skb_put(skb, len: pkt_len), |
1016 | count: ((pkt_len+3)>>2)); |
1017 | skb->protocol = eth_type_trans(skb, dev); |
1018 | netif_rx(skb); |
1019 | dev->stats.rx_packets++; |
1020 | dev->stats.rx_bytes += pkt_len; |
1021 | } else { |
1022 | pr_debug("%s: couldn't allocate a sk_buff of" |
1023 | " size %d.\n" , dev->name, pkt_len); |
1024 | dev->stats.rx_dropped++; |
1025 | } |
1026 | } |
1027 | tc574_wait_for_completion(dev, cmd: RxDiscard); |
1028 | } |
1029 | |
1030 | return worklimit; |
1031 | } |
1032 | |
1033 | /* Provide ioctl() calls to examine the MII xcvr state. */ |
1034 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
1035 | { |
1036 | struct el3_private *lp = netdev_priv(dev); |
1037 | unsigned int ioaddr = dev->base_addr; |
1038 | struct mii_ioctl_data *data = if_mii(rq); |
1039 | int phy = lp->phys & 0x1f; |
1040 | |
1041 | pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n" , |
1042 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
1043 | data->phy_id, data->reg_num, data->val_in, data->val_out); |
1044 | |
1045 | switch(cmd) { |
1046 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ |
1047 | data->phy_id = phy; |
1048 | fallthrough; |
1049 | case SIOCGMIIREG: /* Read the specified MII register. */ |
1050 | { |
1051 | int saved_window; |
1052 | unsigned long flags; |
1053 | |
1054 | spin_lock_irqsave(&lp->window_lock, flags); |
1055 | saved_window = inw(port: ioaddr + EL3_CMD) >> 13; |
1056 | EL3WINDOW(4); |
1057 | data->val_out = mdio_read(ioaddr, phy_id: data->phy_id & 0x1f, |
1058 | location: data->reg_num & 0x1f); |
1059 | EL3WINDOW(saved_window); |
1060 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
1061 | return 0; |
1062 | } |
1063 | case SIOCSMIIREG: /* Write the specified MII register */ |
1064 | { |
1065 | int saved_window; |
1066 | unsigned long flags; |
1067 | |
1068 | spin_lock_irqsave(&lp->window_lock, flags); |
1069 | saved_window = inw(port: ioaddr + EL3_CMD) >> 13; |
1070 | EL3WINDOW(4); |
1071 | mdio_write(ioaddr, phy_id: data->phy_id & 0x1f, |
1072 | location: data->reg_num & 0x1f, value: data->val_in); |
1073 | EL3WINDOW(saved_window); |
1074 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
1075 | return 0; |
1076 | } |
1077 | default: |
1078 | return -EOPNOTSUPP; |
1079 | } |
1080 | } |
1081 | |
1082 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not |
1083 | documented. Until it is we revert to receiving all multicast frames when |
1084 | any multicast reception is desired. |
1085 | Note: My other drivers emit a log message whenever promiscuous mode is |
1086 | entered to help detect password sniffers. This is less desirable on |
1087 | typical PC card machines, so we omit the message. |
1088 | */ |
1089 | |
1090 | static void set_rx_mode(struct net_device *dev) |
1091 | { |
1092 | unsigned int ioaddr = dev->base_addr; |
1093 | |
1094 | if (dev->flags & IFF_PROMISC) |
1095 | outw(value: SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, |
1096 | port: ioaddr + EL3_CMD); |
1097 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
1098 | outw(value: SetRxFilter|RxStation|RxMulticast|RxBroadcast, port: ioaddr + EL3_CMD); |
1099 | else |
1100 | outw(value: SetRxFilter | RxStation | RxBroadcast, port: ioaddr + EL3_CMD); |
1101 | } |
1102 | |
1103 | static void set_multicast_list(struct net_device *dev) |
1104 | { |
1105 | struct el3_private *lp = netdev_priv(dev); |
1106 | unsigned long flags; |
1107 | |
1108 | spin_lock_irqsave(&lp->window_lock, flags); |
1109 | set_rx_mode(dev); |
1110 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
1111 | } |
1112 | |
1113 | static int el3_close(struct net_device *dev) |
1114 | { |
1115 | unsigned int ioaddr = dev->base_addr; |
1116 | struct el3_private *lp = netdev_priv(dev); |
1117 | struct pcmcia_device *link = lp->p_dev; |
1118 | |
1119 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n" , dev->name); |
1120 | |
1121 | if (pcmcia_dev_present(p_dev: link)) { |
1122 | unsigned long flags; |
1123 | |
1124 | /* Turn off statistics ASAP. We update lp->stats below. */ |
1125 | outw(value: StatsDisable, port: ioaddr + EL3_CMD); |
1126 | |
1127 | /* Disable the receiver and transmitter. */ |
1128 | outw(value: RxDisable, port: ioaddr + EL3_CMD); |
1129 | outw(value: TxDisable, port: ioaddr + EL3_CMD); |
1130 | |
1131 | /* Note: Switching to window 0 may disable the IRQ. */ |
1132 | EL3WINDOW(0); |
1133 | spin_lock_irqsave(&lp->window_lock, flags); |
1134 | update_stats(dev); |
1135 | spin_unlock_irqrestore(lock: &lp->window_lock, flags); |
1136 | |
1137 | /* force interrupts off */ |
1138 | outw(value: SetIntrEnb | 0x0000, port: ioaddr + EL3_CMD); |
1139 | } |
1140 | |
1141 | link->open--; |
1142 | netif_stop_queue(dev); |
1143 | del_timer_sync(timer: &lp->media); |
1144 | |
1145 | return 0; |
1146 | } |
1147 | |
1148 | static const struct pcmcia_device_id tc574_ids[] = { |
1149 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), |
1150 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis" ), |
1151 | PCMCIA_DEVICE_NULL, |
1152 | }; |
1153 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); |
1154 | |
1155 | static struct pcmcia_driver tc574_driver = { |
1156 | .owner = THIS_MODULE, |
1157 | .name = "3c574_cs" , |
1158 | .probe = tc574_probe, |
1159 | .remove = tc574_detach, |
1160 | .id_table = tc574_ids, |
1161 | .suspend = tc574_suspend, |
1162 | .resume = tc574_resume, |
1163 | }; |
1164 | module_pcmcia_driver(tc574_driver); |
1165 | |