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net: trans_start cleanups
[deliverable/linux.git] / drivers / net / pcmcia / 3c574_cs.c
CommitLineData
1da177e4
LT		 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
22I. Board Compatibility
23
24This device driver is designed for the 3Com 3c574 PC card Fast Ethernet
25Adapter.
26
27II. Board-specific settings
28
29None -- PC cards are autoconfigured.
30
31III. Driver operation
32
33The 3c574 uses a Boomerang-style interface, without the bus-master capability.
34See the Boomerang driver and documentation for most details.
35
36IV. Notes and chip documentation.
37
38Two added registers are used to enhance PIO performance, RunnerRdCtrl and
39RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the
40count of word (16 bits) reads or writes the driver is about to do to the Rx
41or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card
42translation latency by buffering the I/O operations with an 8 word FIFO.
43Note: No other chip accesses are permitted when this buffer is used.
44
45A second enhancement is that both attribute and common memory space
460x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster
47with *some* PCcard bridges) may be used instead of I/O operations.
48This is enabled by setting the 0x10 bit in the PCMCIA LAN COR.
49
50Some slow PC card bridges work better if they never see a WAIT signal.
51This is configured by setting the 0x20 bit in the PCMCIA LAN COR.
52Only do this after testing that it is reliable and improves performance.
53
54The upper five bits of RunnerRdCtrl are used to window into PCcard
55configuration space registers. Window 0 is the regular Boomerang/Odie
56register set, 1-5 are various PC card control registers, and 16-31 are
57the (reversed!) CIS table.
58
59A final note: writing the InternalConfig register in window 3 with an
60invalid ramWidth is Very Bad.
61
62V. References
63
64http://www.scyld.com/expert/NWay.html
65http://www.national.com/pf/DP/DP83840.html
66
67Thanks to Terry Murphy of 3Com for providing development information for
68earlier 3Com products.
69
70*/
71
72#include <linux/module.h>
73#include <linux/kernel.h>
74#include <linux/init.h>
75#include <linux/slab.h>
76#include <linux/string.h>
77#include <linux/timer.h>
78#include <linux/interrupt.h>
79#include <linux/in.h>
80#include <linux/delay.h>
81#include <linux/netdevice.h>
82#include <linux/etherdevice.h>
83#include <linux/skbuff.h>
84#include <linux/if_arp.h>
85#include <linux/ioport.h>
86#include <linux/ethtool.h>
87#include <linux/bitops.h>
0fa0ee05 88#include <linux/mii.h>
1da177e4 89
1da177e4
LT		 90#include <pcmcia/cs_types.h>
91#include <pcmcia/cs.h>
92#include <pcmcia/cistpl.h>
93#include <pcmcia/cisreg.h>
94#include <pcmcia/ciscode.h>
95#include <pcmcia/ds.h>
96#include <pcmcia/mem_op.h>
97
98#include <asm/uaccess.h>
99#include <asm/io.h>
100#include <asm/system.h>
101
102/*====================================================================*/
103
104/* Module parameters */
105
106MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
107MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver");
108MODULE_LICENSE("GPL");
109
110#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
111
112/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
113INT_MODULE_PARM(max_interrupt_work, 32);
114
115/* Force full duplex modes? */
116INT_MODULE_PARM(full_duplex, 0);
117
118/* Autodetect link polarity reversal? */
119INT_MODULE_PARM(auto_polarity, 1);
120
1da177e4
LT		 121
122/*====================================================================*/
123
124/* Time in jiffies before concluding the transmitter is hung. */
125#define TX_TIMEOUT ((800*HZ)/1000)
126
127/* To minimize the size of the driver source and make the driver more
128 readable not all constants are symbolically defined.
129 You'll need the manual if you want to understand driver details anyway. */
130/* Offsets from base I/O address. */
131#define EL3_DATA 0x00
132#define EL3_CMD 0x0e
133#define EL3_STATUS 0x0e
134
135#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
136
137/* The top five bits written to EL3_CMD are a command, the lower
138 11 bits are the parameter, if applicable. */
139enum el3_cmds {
140 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
141 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
142 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
143 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
144 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
145 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
146 StatsDisable = 22<<11, StopCoax = 23<<11,
147};
148
149enum elxl_status {
150 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
151 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
152 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 };
153
154/* The SetRxFilter command accepts the following classes: */
155enum RxFilter {
156 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
157};
158
159enum Window0 {
160 Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */
161 IntrStatus=0x0E, /* Valid in all windows. */
162};
163/* These assumes the larger EEPROM. */
164enum Win0_EEPROM_cmds {
165 EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300,
166 EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */
167 EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */
168};
169
170/* Register window 1 offsets, the window used in normal operation.
171 On the "Odie" this window is always mapped at offsets 0x10-0x1f.
172 Except for TxFree, which is overlapped by RunnerWrCtrl. */
173enum Window1 {
174 TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
175 RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B,
176 TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */
177 RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c,
178};
179
180enum Window3 { /* Window 3: MAC/config bits. */
181 Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8,
182};
b6659824
AV		 183enum wn3_config {
184 Ram_size = 7,
185 Ram_width = 8,
186 Ram_speed = 0x30,
187 Rom_size = 0xc0,
188 Ram_split_shift = 16,
189 Ram_split = 3 << Ram_split_shift,
190 Xcvr_shift = 20,
191 Xcvr = 7 << Xcvr_shift,
192 Autoselect = 0x1000000,
1da177e4
LT		 193};
194
195enum Window4 { /* Window 4: Xcvr/media bits. */
196 Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10,
197};
198
199#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
200
201struct el3_private {
fd238232 202 struct pcmcia_device *p_dev;
1da177e4 203 dev_node_t node;
1da177e4
LT		 204 u16 advertising, partner; /* NWay media advertisement */
205 unsigned char phys; /* MII device address */
206 unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */
207 /* for transceiver monitoring */
208 struct timer_list media;
209 unsigned short media_status;
210 unsigned short fast_poll;
211 unsigned long last_irq;
212 spinlock_t window_lock; /* Guards the Window selection */
213};
214
215/* Set iff a MII transceiver on any interface requires mdio preamble.
216 This only set with the original DP83840 on older 3c905 boards, so the extra
217 code size of a per-interface flag is not worthwhile. */
218static char mii_preamble_required = 0;
219
220/* Index of functions. */
221
15b99ac1 222static int tc574_config(struct pcmcia_device *link);
fba395ee 223static void tc574_release(struct pcmcia_device *link);
1da177e4 224
906da809
OJ		 225static void mdio_sync(unsigned int ioaddr, int bits);
226static int mdio_read(unsigned int ioaddr, int phy_id, int location);
227static void mdio_write(unsigned int ioaddr, int phy_id, int location,
228 int value);
229static unsigned short read_eeprom(unsigned int ioaddr, int index);
1da177e4
LT		 230static void tc574_wait_for_completion(struct net_device *dev, int cmd);
231
232static void tc574_reset(struct net_device *dev);
233static void media_check(unsigned long arg);
234static int el3_open(struct net_device *dev);
dbf02fae
SH		 235static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
236 struct net_device *dev);
7d12e780 237static irqreturn_t el3_interrupt(int irq, void *dev_id);
1da177e4
LT		 238static void update_stats(struct net_device *dev);
239static struct net_device_stats *el3_get_stats(struct net_device *dev);
240static int el3_rx(struct net_device *dev, int worklimit);
241static int el3_close(struct net_device *dev);
242static void el3_tx_timeout(struct net_device *dev);
243static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
7282d491 244static const struct ethtool_ops netdev_ethtool_ops;
1da177e4 245static void set_rx_mode(struct net_device *dev);
e3eef534 246static void set_multicast_list(struct net_device *dev);
1da177e4 247
cc3b4866 248static void tc574_detach(struct pcmcia_device *p_dev);
1da177e4 249
1da177e4
LT		 250/*
251 tc574_attach() creates an "instance" of the driver, allocating
252 local data structures for one device. The device is registered
253 with Card Services.
254*/
fb72e2ff
SH		 255static const struct net_device_ops el3_netdev_ops = {
256 .ndo_open = el3_open,
257 .ndo_stop = el3_close,
258 .ndo_start_xmit = el3_start_xmit,
259 .ndo_tx_timeout = el3_tx_timeout,
260 .ndo_get_stats = el3_get_stats,
261 .ndo_do_ioctl = el3_ioctl,
e3eef534 262 .ndo_set_multicast_list = set_multicast_list,
fb72e2ff
SH		 263 .ndo_change_mtu = eth_change_mtu,
264 .ndo_set_mac_address = eth_mac_addr,
265 .ndo_validate_addr = eth_validate_addr,
266};
1da177e4 267
15b99ac1 268static int tc574_probe(struct pcmcia_device *link)
1da177e4
LT		 269{
270 struct el3_private *lp;
1da177e4 271 struct net_device *dev;
1da177e4 272
dd0fab5b 273 dev_dbg(&link->dev, "3c574_attach()\n");
1da177e4
LT		 274
275 /* Create the PC card device object. */
276 dev = alloc_etherdev(sizeof(struct el3_private));
277 if (!dev)
f8cfa618 278 return -ENOMEM;
1da177e4 279 lp = netdev_priv(dev);
1da177e4 280 link->priv = dev;
fba395ee 281 lp->p_dev = link;
1da177e4
LT		 282
283 spin_lock_init(&lp->window_lock);
284 link->io.NumPorts1 = 32;
285 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
5fa9167a 286 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
1da177e4 287 link->irq.Handler = &el3_interrupt;
1da177e4 288 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 289 link->conf.IntType = INT_MEMORY_AND_IO;
290 link->conf.ConfigIndex = 1;
1da177e4 291
fb72e2ff 292 dev->netdev_ops = &el3_netdev_ops;
1da177e4 293 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
1da177e4 294 dev->watchdog_timeo = TX_TIMEOUT;
1da177e4 295
15b99ac1 296 return tc574_config(link);
1da177e4
LT		 297} /* tc574_attach */
298
299/*
300
301 This deletes a driver "instance". The device is de-registered
302 with Card Services. If it has been released, all local data
303 structures are freed. Otherwise, the structures will be freed
304 when the device is released.
305
306*/
307
fba395ee 308static void tc574_detach(struct pcmcia_device *link)
1da177e4
LT		 309{
310 struct net_device *dev = link->priv;
1da177e4 311
dd0fab5b 312 dev_dbg(&link->dev, "3c574_detach()\n");
1da177e4 313
fd238232 314 if (link->dev_node)
1da177e4
LT		 315 unregister_netdev(dev);
316
e2d40963 317 tc574_release(link);
1da177e4 318
1da177e4
LT		 319 free_netdev(dev);
320} /* tc574_detach */
321
322/*
323 tc574_config() is scheduled to run after a CARD_INSERTION event
324 is received, to configure the PCMCIA socket, and to make the
325 ethernet device available to the system.
326*/
327
f71e1309 328static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
1da177e4 329
15b99ac1 330static int tc574_config(struct pcmcia_device *link)
1da177e4 331{
1da177e4
LT		 332 struct net_device *dev = link->priv;
333 struct el3_private *lp = netdev_priv(dev);
dd0fab5b 334 int ret, i, j;
906da809 335 unsigned int ioaddr;
b1e247ad 336 __be16 *phys_addr;
1da177e4 337 char *cardname;
b6659824 338 __u32 config;
dddfbd82
DB		 339 u8 *buf;
340 size_t len;
1da177e4 341
b1e247ad 342 phys_addr = (__be16 *)dev->dev_addr;
1da177e4 343
dd0fab5b 344 dev_dbg(&link->dev, "3c574_config()\n");
1da177e4 345
1da177e4
LT		 346 link->io.IOAddrLines = 16;
347 for (i = j = 0; j < 0x400; j += 0x20) {
348 link->io.BasePort1 = j ^ 0x300;
fba395ee 349 i = pcmcia_request_io(link, &link->io);
4c89e88b
DB		 350 if (i == 0)
351 break;
1da177e4 352 }
dd0fab5b
DB		 353 if (i != 0)
354 goto failed;
355
356 ret = pcmcia_request_irq(link, &link->irq);
357 if (ret)
358 goto failed;
359
360 ret = pcmcia_request_configuration(link, &link->conf);
361 if (ret)
1da177e4 362 goto failed;
1da177e4
LT		 363
364 dev->irq = link->irq.AssignedIRQ;
365 dev->base_addr = link->io.BasePort1;
366
367 ioaddr = dev->base_addr;
368
369 /* The 3c574 normally uses an EEPROM for configuration info, including
370 the hardware address. The future products may include a modem chip
371 and put the address in the CIS. */
dddfbd82
DB		 372
373 len = pcmcia_get_tuple(link, 0x88, &buf);
374 if (buf && len >= 6) {
1da177e4 375 for (i = 0; i < 3; i++)
dddfbd82
DB		 376 phys_addr[i] = htons(le16_to_cpu(buf[i * 2]));
377 kfree(buf);
1da177e4 378 } else {
dddfbd82 379 kfree(buf); /* 0 < len < 6 */
1da177e4
LT		 380 EL3WINDOW(0);
381 for (i = 0; i < 3; i++)
382 phys_addr[i] = htons(read_eeprom(ioaddr, i + 10));
b1e247ad 383 if (phys_addr[0] == htons(0x6060)) {
1da177e4
LT		 384 printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx"
385 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
386 goto failed;
387 }
388 }
a9606fd3
DB		 389 if (link->prod_id[1])
390 cardname = link->prod_id[1];
391 else
1da177e4
LT		 392 cardname = "3Com 3c574";
393
394 {
395 u_char mcr;
396 outw(2<<11, ioaddr + RunnerRdCtrl);
397 mcr = inb(ioaddr + 2);
398 outw(0<<11, ioaddr + RunnerRdCtrl);
399 printk(KERN_INFO " ASIC rev %d,", mcr>>3);
400 EL3WINDOW(3);
b6659824
AV		 401 config = inl(ioaddr + Wn3_Config);
402 lp->default_media = (config & Xcvr) >> Xcvr_shift;
403 lp->autoselect = config & Autoselect ? 1 : 0;
1da177e4
LT		 404 }
405
406 init_timer(&lp->media);
407
408 {
409 int phy;
410
411 /* Roadrunner only: Turn on the MII transceiver */
412 outw(0x8040, ioaddr + Wn3_Options);
413 mdelay(1);
414 outw(0xc040, ioaddr + Wn3_Options);
415 tc574_wait_for_completion(dev, TxReset);
416 tc574_wait_for_completion(dev, RxReset);
417 mdelay(1);
418 outw(0x8040, ioaddr + Wn3_Options);
419
420 EL3WINDOW(4);
421 for (phy = 1; phy <= 32; phy++) {
422 int mii_status;
423 mdio_sync(ioaddr, 32);
424 mii_status = mdio_read(ioaddr, phy & 0x1f, 1);
425 if (mii_status != 0xffff) {
426 lp->phys = phy & 0x1f;
dd0fab5b
DB		 427 dev_dbg(&link->dev, " MII transceiver at "
428 "index %d, status %x.\n",
1da177e4
LT		 429 phy, mii_status);
430 if ((mii_status & 0x0040) == 0)
431 mii_preamble_required = 1;
432 break;
433 }
434 }
435 if (phy > 32) {
436 printk(KERN_NOTICE " No MII transceivers found!\n");
437 goto failed;
438 }
439 i = mdio_read(ioaddr, lp->phys, 16) | 0x40;
440 mdio_write(ioaddr, lp->phys, 16, i);
441 lp->advertising = mdio_read(ioaddr, lp->phys, 4);
442 if (full_duplex) {
443 /* Only advertise the FD media types. */
444 lp->advertising &= ~0x02a0;
445 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
446 }
447 }
448
fd238232 449 link->dev_node = &lp->node;
dd2e5a15 450 SET_NETDEV_DEV(dev, &link->dev);
1da177e4
LT		 451
452 if (register_netdev(dev) != 0) {
453 printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n");
fd238232 454 link->dev_node = NULL;
1da177e4
LT		 455 goto failed;
456 }
457
458 strcpy(lp->node.dev_name, dev->name);
459
0795af57 460 printk(KERN_INFO "%s: %s at io %#3lx, irq %d, "
e174961c 461 "hw_addr %pM.\n",
0795af57 462 dev->name, cardname, dev->base_addr, dev->irq,
e174961c 463 dev->dev_addr);
1da177e4 464 printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n",
b6659824
AV		 465 8 << config & Ram_size,
466 ram_split[(config & Ram_split) >> Ram_split_shift],
467 config & Autoselect ? "autoselect " : "");
1da177e4 468
15b99ac1 469 return 0;
1da177e4 470
1da177e4
LT		 471failed:
472 tc574_release(link);
15b99ac1 473 return -ENODEV;
1da177e4
LT		 474
475} /* tc574_config */
476
477/*
478 After a card is removed, tc574_release() will unregister the net
479 device, and release the PCMCIA configuration. If the device is
480 still open, this will be postponed until it is closed.
481*/
482
fba395ee 483static void tc574_release(struct pcmcia_device *link)
1da177e4 484{
fba395ee 485 pcmcia_disable_device(link);
1da177e4
LT		 486}
487
fba395ee 488static int tc574_suspend(struct pcmcia_device *link)
98e4c28b 489{
98e4c28b
DB		 490 struct net_device *dev = link->priv;
491
e2d40963 492 if (link->open)
8661bb5b 493 netif_device_detach(dev);
98e4c28b
DB		 494
495 return 0;
496}
497
fba395ee 498static int tc574_resume(struct pcmcia_device *link)
98e4c28b 499{
98e4c28b
DB		 500 struct net_device *dev = link->priv;
501
e2d40963 502 if (link->open) {
8661bb5b
DB		 503 tc574_reset(dev);
504 netif_device_attach(dev);
98e4c28b
DB		 505 }
506
507 return 0;
508}
509
1da177e4
LT		 510static void dump_status(struct net_device *dev)
511{
906da809 512 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 513 EL3WINDOW(1);
514 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
515 "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS),
516 inw(ioaddr+RxStatus), inb(ioaddr+TxStatus),
517 inw(ioaddr+TxFree));
518 EL3WINDOW(4);
519 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
520 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
521 inw(ioaddr+0x08), inw(ioaddr+0x0a));
522 EL3WINDOW(1);
523}
524
525/*
526 Use this for commands that may take time to finish
527*/
528static void tc574_wait_for_completion(struct net_device *dev, int cmd)
529{
530 int i = 1500;
531 outw(cmd, dev->base_addr + EL3_CMD);
532 while (--i > 0)
533 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
534 if (i == 0)
535 printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd);
536}
537
538/* Read a word from the EEPROM using the regular EEPROM access register.
539 Assume that we are in register window zero.
540 */
906da809 541static unsigned short read_eeprom(unsigned int ioaddr, int index)
1da177e4
LT		 542{
543 int timer;
544 outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd);
545 /* Pause for at least 162 usec for the read to take place. */
546 for (timer = 1620; timer >= 0; timer--) {
547 if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
548 break;
549 }
550 return inw(ioaddr + Wn0EepromData);
551}
552
553/* MII transceiver control section.
554 Read and write the MII registers using software-generated serial
555 MDIO protocol. See the MII specifications or DP83840A data sheet
556 for details.
557 The maxium data clock rate is 2.5 Mhz. The timing is easily met by the
558 slow PC card interface. */
559
560#define MDIO_SHIFT_CLK 0x01
561#define MDIO_DIR_WRITE 0x04
562#define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE)
563#define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE)
564#define MDIO_DATA_READ 0x02
565#define MDIO_ENB_IN 0x00
566
567/* Generate the preamble required for initial synchronization and
568 a few older transceivers. */
906da809 569static void mdio_sync(unsigned int ioaddr, int bits)
1da177e4 570{
906da809 571 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 572
573 /* Establish sync by sending at least 32 logic ones. */
574 while (-- bits >= 0) {
575 outw(MDIO_DATA_WRITE1, mdio_addr);
576 outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr);
577 }
578}
579
906da809 580static int mdio_read(unsigned int ioaddr, int phy_id, int location)
1da177e4
LT		 581{
582 int i;
583 int read_cmd = (0xf6 << 10) | (phy_id << 5) | location;
584 unsigned int retval = 0;
906da809 585 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 586
587 if (mii_preamble_required)
588 mdio_sync(ioaddr, 32);
589
590 /* Shift the read command bits out. */
591 for (i = 14; i >= 0; i--) {
592 int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
593 outw(dataval, mdio_addr);
594 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
595 }
596 /* Read the two transition, 16 data, and wire-idle bits. */
597 for (i = 19; i > 0; i--) {
598 outw(MDIO_ENB_IN, mdio_addr);
599 retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0);
600 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
601 }
602 return (retval>>1) & 0xffff;
603}
604
906da809 605static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value)
1da177e4
LT		 606{
607 int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value;
906da809 608 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 609 int i;
610
611 if (mii_preamble_required)
612 mdio_sync(ioaddr, 32);
613
614 /* Shift the command bits out. */
615 for (i = 31; i >= 0; i--) {
616 int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
617 outw(dataval, mdio_addr);
618 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
619 }
620 /* Leave the interface idle. */
621 for (i = 1; i >= 0; i--) {
622 outw(MDIO_ENB_IN, mdio_addr);
623 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
624 }
625
626 return;
627}
628
629/* Reset and restore all of the 3c574 registers. */
630static void tc574_reset(struct net_device *dev)
631{
632 struct el3_private *lp = netdev_priv(dev);
633 int i;
906da809 634 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 635 unsigned long flags;
636
637 tc574_wait_for_completion(dev, TotalReset|0x10);
638
639 spin_lock_irqsave(&lp->window_lock, flags);
640 /* Clear any transactions in progress. */
641 outw(0, ioaddr + RunnerWrCtrl);
642 outw(0, ioaddr + RunnerRdCtrl);
643
644 /* Set the station address and mask. */
645 EL3WINDOW(2);
646 for (i = 0; i < 6; i++)
647 outb(dev->dev_addr[i], ioaddr + i);
648 for (; i < 12; i+=2)
649 outw(0, ioaddr + i);
650
651 /* Reset config options */
652 EL3WINDOW(3);
653 outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
654 outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,
655 ioaddr + Wn3_Config);
656 /* Roadrunner only: Turn on the MII transceiver. */
657 outw(0x8040, ioaddr + Wn3_Options);
658 mdelay(1);
659 outw(0xc040, ioaddr + Wn3_Options);
660 EL3WINDOW(1);
661 spin_unlock_irqrestore(&lp->window_lock, flags);
662
663 tc574_wait_for_completion(dev, TxReset);
664 tc574_wait_for_completion(dev, RxReset);
665 mdelay(1);
666 spin_lock_irqsave(&lp->window_lock, flags);
667 EL3WINDOW(3);
668 outw(0x8040, ioaddr + Wn3_Options);
669
670 /* Switch to the stats window, and clear all stats by reading. */
671 outw(StatsDisable, ioaddr + EL3_CMD);
672 EL3WINDOW(6);
673 for (i = 0; i < 10; i++)
674 inb(ioaddr + i);
675 inw(ioaddr + 10);
676 inw(ioaddr + 12);
677 EL3WINDOW(4);
678 inb(ioaddr + 12);
679 inb(ioaddr + 13);
680
681 /* .. enable any extra statistics bits.. */
682 outw(0x0040, ioaddr + Wn4_NetDiag);
683
684 EL3WINDOW(1);
685 spin_unlock_irqrestore(&lp->window_lock, flags);
686
687 /* .. re-sync MII and re-fill what NWay is advertising. */
688 mdio_sync(ioaddr, 32);
689 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
690 if (!auto_polarity) {
691 /* works for TDK 78Q2120 series MII's */
1569d9e8 692 i = mdio_read(ioaddr, lp->phys, 16) | 0x20;
1da177e4
LT		 693 mdio_write(ioaddr, lp->phys, 16, i);
694 }
695
696 spin_lock_irqsave(&lp->window_lock, flags);
697 /* Switch to register set 1 for normal use, just for TxFree. */
698 set_rx_mode(dev);
699 spin_unlock_irqrestore(&lp->window_lock, flags);
700 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
701 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
702 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
703 /* Allow status bits to be seen. */
704 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
705 /* Ack all pending events, and set active indicator mask. */
706 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
707 ioaddr + EL3_CMD);
708 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
709 | AdapterFailure | RxEarly, ioaddr + EL3_CMD);
710}
711
712static int el3_open(struct net_device *dev)
713{
714 struct el3_private *lp = netdev_priv(dev);
fba395ee 715 struct pcmcia_device *link = lp->p_dev;
1da177e4 716
9940ec36 717 if (!pcmcia_dev_present(link))
1da177e4
LT		 718 return -ENODEV;
719
720 link->open++;
721 netif_start_queue(dev);
722
723 tc574_reset(dev);
724 lp->media.function = &media_check;
725 lp->media.data = (unsigned long) dev;
726 lp->media.expires = jiffies + HZ;
727 add_timer(&lp->media);
728
dd0fab5b 729 dev_dbg(&link->dev, "%s: opened, status %4.4x.\n",
1da177e4
LT		 730 dev->name, inw(dev->base_addr + EL3_STATUS));
731
732 return 0;
733}
734
735static void el3_tx_timeout(struct net_device *dev)
736{
906da809 737 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 738
739 printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name);
740 dump_status(dev);
2e8d31d5 741 dev->stats.tx_errors++;
1ae5dc34 742 dev->trans_start = jiffies; /* prevent tx timeout */
1da177e4
LT		 743 /* Issue TX_RESET and TX_START commands. */
744 tc574_wait_for_completion(dev, TxReset);
745 outw(TxEnable, ioaddr + EL3_CMD);
746 netif_wake_queue(dev);
747}
748
749static void pop_tx_status(struct net_device *dev)
750{
906da809 751 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 752 int i;
753
754 /* Clear the Tx status stack. */
755 for (i = 32; i > 0; i--) {
756 u_char tx_status = inb(ioaddr + TxStatus);
757 if (!(tx_status & 0x84))
758 break;
759 /* reset transmitter on jabber error or underrun */
760 if (tx_status & 0x30)
761 tc574_wait_for_completion(dev, TxReset);
762 if (tx_status & 0x38) {
dd0fab5b 763 pr_debug("%s: transmit error: status 0x%02x\n",
1da177e4
LT		 764 dev->name, tx_status);
765 outw(TxEnable, ioaddr + EL3_CMD);
2e8d31d5 766 dev->stats.tx_aborted_errors++;
1da177e4
LT		 767 }
768 outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
769 }
770}
771
dbf02fae
SH		 772static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
773 struct net_device *dev)
1da177e4 774{
906da809 775 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 776 struct el3_private *lp = netdev_priv(dev);
777 unsigned long flags;
778
dd0fab5b 779 pr_debug("%s: el3_start_xmit(length = %ld) called, "
1da177e4
LT		 780 "status %4.4x.\n", dev->name, (long)skb->len,
781 inw(ioaddr + EL3_STATUS));
782
783 spin_lock_irqsave(&lp->window_lock, flags);
df245dce
AK		 784
785 dev->stats.tx_bytes += skb->len;
786
787 /* Put out the doubleword header... */
1da177e4
LT		 788 outw(skb->len, ioaddr + TX_FIFO);
789 outw(0, ioaddr + TX_FIFO);
df245dce 790 /* ... and the packet rounded to a doubleword. */
1da177e4
LT		 791 outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
792
1da177e4
LT		 793 /* TxFree appears only in Window 1, not offset 0x1c. */
794 if (inw(ioaddr + TxFree) <= 1536) {
795 netif_stop_queue(dev);
796 /* Interrupt us when the FIFO has room for max-sized packet.
797 The threshold is in units of dwords. */
798 outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD);
799 }
800
801 pop_tx_status(dev);
802 spin_unlock_irqrestore(&lp->window_lock, flags);
803 dev_kfree_skb(skb);
6ed10654 804 return NETDEV_TX_OK;
1da177e4
LT		 805}
806
807/* The EL3 interrupt handler. */
7d12e780 808static irqreturn_t el3_interrupt(int irq, void *dev_id)
1da177e4
LT		 809{
810 struct net_device *dev = (struct net_device *) dev_id;
811 struct el3_private *lp = netdev_priv(dev);
906da809 812 unsigned int ioaddr;
1da177e4
LT		 813 unsigned status;
814 int work_budget = max_interrupt_work;
815 int handled = 0;
816
817 if (!netif_device_present(dev))
818 return IRQ_NONE;
819 ioaddr = dev->base_addr;
820
dd0fab5b 821 pr_debug("%s: interrupt, status %4.4x.\n",
1da177e4
LT		 822 dev->name, inw(ioaddr + EL3_STATUS));
823
824 spin_lock(&lp->window_lock);
825
826 while ((status = inw(ioaddr + EL3_STATUS)) &
827 (IntLatch | RxComplete | RxEarly | StatsFull)) {
828 if (!netif_device_present(dev) ||
829 ((status & 0xe000) != 0x2000)) {
dd0fab5b 830 pr_debug("%s: Interrupt from dead card\n", dev->name);
1da177e4
LT		 831 break;
832 }
833
834 handled = 1;
835
836 if (status & RxComplete)
837 work_budget = el3_rx(dev, work_budget);
838
839 if (status & TxAvailable) {
dd0fab5b 840 pr_debug(" TX room bit was handled.\n");
1da177e4
LT		 841 /* There's room in the FIFO for a full-sized packet. */
842 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
843 netif_wake_queue(dev);
844 }
845
846 if (status & TxComplete)
847 pop_tx_status(dev);
848
849 if (status & (AdapterFailure | RxEarly | StatsFull)) {
850 /* Handle all uncommon interrupts. */
851 if (status & StatsFull)
852 update_stats(dev);
853 if (status & RxEarly) {
854 work_budget = el3_rx(dev, work_budget);
855 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
856 }
857 if (status & AdapterFailure) {
858 u16 fifo_diag;
859 EL3WINDOW(4);
860 fifo_diag = inw(ioaddr + Wn4_FIFODiag);
861 EL3WINDOW(1);
862 printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic"
863 " register %04x.\n", dev->name, fifo_diag);
864 if (fifo_diag & 0x0400) {
865 /* Tx overrun */
866 tc574_wait_for_completion(dev, TxReset);
867 outw(TxEnable, ioaddr + EL3_CMD);
868 }
869 if (fifo_diag & 0x2000) {
870 /* Rx underrun */
871 tc574_wait_for_completion(dev, RxReset);
872 set_rx_mode(dev);
873 outw(RxEnable, ioaddr + EL3_CMD);
874 }
875 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
876 }
877 }
878
879 if (--work_budget < 0) {
dd0fab5b 880 pr_debug("%s: Too much work in interrupt, "
1da177e4
LT		 881 "status %4.4x.\n", dev->name, status);
882 /* Clear all interrupts */
883 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
884 break;
885 }
886 /* Acknowledge the IRQ. */
887 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
888 }
889
dd0fab5b 890 pr_debug("%s: exiting interrupt, status %4.4x.\n",
1da177e4
LT		 891 dev->name, inw(ioaddr + EL3_STATUS));
892
893 spin_unlock(&lp->window_lock);
894 return IRQ_RETVAL(handled);
895}
896
897/*
898 This timer serves two purposes: to check for missed interrupts
899 (and as a last resort, poll the NIC for events), and to monitor
900 the MII, reporting changes in cable status.
901*/
902static void media_check(unsigned long arg)
903{
904 struct net_device *dev = (struct net_device *) arg;
905 struct el3_private *lp = netdev_priv(dev);
906da809 906 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 907 unsigned long flags;
908 unsigned short /* cable, */ media, partner;
909
910 if (!netif_device_present(dev))
911 goto reschedule;
912
913 /* Check for pending interrupt with expired latency timer: with
914 this, we can limp along even if the interrupt is blocked */
915 if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) {
916 if (!lp->fast_poll)
917 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
671c8806
KK		 918
919 local_irq_save(flags);
e363d138 920 el3_interrupt(dev->irq, dev);
671c8806
KK		 921 local_irq_restore(flags);
922
1da177e4
LT		 923 lp->fast_poll = HZ;
924 }
925 if (lp->fast_poll) {
926 lp->fast_poll--;
927 lp->media.expires = jiffies + 2*HZ/100;
928 add_timer(&lp->media);
929 return;
930 }
931
932 spin_lock_irqsave(&lp->window_lock, flags);
933 EL3WINDOW(4);
934 media = mdio_read(ioaddr, lp->phys, 1);
935 partner = mdio_read(ioaddr, lp->phys, 5);
936 EL3WINDOW(1);
937
938 if (media != lp->media_status) {
939 if ((media ^ lp->media_status) & 0x0004)
940 printk(KERN_INFO "%s: %s link beat\n", dev->name,
941 (lp->media_status & 0x0004) ? "lost" : "found");
942 if ((media ^ lp->media_status) & 0x0020) {
943 lp->partner = 0;
944 if (lp->media_status & 0x0020) {
945 printk(KERN_INFO "%s: autonegotiation restarted\n",
946 dev->name);
947 } else if (partner) {
948 partner &= lp->advertising;
949 lp->partner = partner;
950 printk(KERN_INFO "%s: autonegotiation complete: "
951 "%sbaseT-%cD selected\n", dev->name,
952 ((partner & 0x0180) ? "100" : "10"),
953 ((partner & 0x0140) ? 'F' : 'H'));
954 } else {
955 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
956 dev->name);
957 }
958
959 EL3WINDOW(3);
960 outb((partner & 0x0140 ? 0x20 : 0) |
961 (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
962 EL3WINDOW(1);
963
964 }
965 if (media & 0x0010)
966 printk(KERN_INFO "%s: remote fault detected\n",
967 dev->name);
968 if (media & 0x0002)
969 printk(KERN_INFO "%s: jabber detected\n", dev->name);
970 lp->media_status = media;
971 }
972 spin_unlock_irqrestore(&lp->window_lock, flags);
973
974reschedule:
975 lp->media.expires = jiffies + HZ;
976 add_timer(&lp->media);
977}
978
979static struct net_device_stats *el3_get_stats(struct net_device *dev)
980{
981 struct el3_private *lp = netdev_priv(dev);
982
983 if (netif_device_present(dev)) {
984 unsigned long flags;
985 spin_lock_irqsave(&lp->window_lock, flags);
986 update_stats(dev);
987 spin_unlock_irqrestore(&lp->window_lock, flags);
988 }
2e8d31d5 989 return &dev->stats;
1da177e4
LT		 990}
991
992/* Update statistics.
993 Suprisingly this need not be run single-threaded, but it effectively is.
994 The counters clear when read, so the adds must merely be atomic.
995 */
996static void update_stats(struct net_device *dev)
997{
906da809 998 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 999 u8 rx, tx, up;
1000
dd0fab5b 1001 pr_debug("%s: updating the statistics.\n", dev->name);
1da177e4
LT		 1002
1003 if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */
1004 return;
1005
1006 /* Unlike the 3c509 we need not turn off stats updates while reading. */
1007 /* Switch to the stats window, and read everything. */
1008 EL3WINDOW(6);
2e8d31d5
PZ		 1009 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
1010 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1da177e4 1011 /* Multiple collisions. */ inb(ioaddr + 2);
2e8d31d5
PZ		 1012 dev->stats.collisions += inb(ioaddr + 3);
1013 dev->stats.tx_window_errors += inb(ioaddr + 4);
1014 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
1015 dev->stats.tx_packets += inb(ioaddr + 6);
1da177e4 1016 up = inb(ioaddr + 9);
2e8d31d5 1017 dev->stats.tx_packets += (up&0x30) << 4;
1da177e4
LT		 1018 /* Rx packets */ inb(ioaddr + 7);
1019 /* Tx deferrals */ inb(ioaddr + 8);
1020 rx = inw(ioaddr + 10);
1021 tx = inw(ioaddr + 12);
1022
1023 EL3WINDOW(4);
1024 /* BadSSD */ inb(ioaddr + 12);
1025 up = inb(ioaddr + 13);
1026
1da177e4
LT		 1027 EL3WINDOW(1);
1028}
1029
1030static int el3_rx(struct net_device *dev, int worklimit)
1031{
906da809 1032 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1033 short rx_status;
1034
dd0fab5b 1035 pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
1da177e4
LT		 1036 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus));
1037 while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) &&
b9bdcd9b
RK		 1038 worklimit > 0) {
1039 worklimit--;
1da177e4
LT		 1040 if (rx_status & 0x4000) { /* Error, update stats. */
1041 short error = rx_status & 0x3800;
2e8d31d5 1042 dev->stats.rx_errors++;
1da177e4 1043 switch (error) {
2e8d31d5
PZ		 1044 case 0x0000: dev->stats.rx_over_errors++; break;
1045 case 0x0800: dev->stats.rx_length_errors++; break;
1046 case 0x1000: dev->stats.rx_frame_errors++; break;
1047 case 0x1800: dev->stats.rx_length_errors++; break;
1048 case 0x2000: dev->stats.rx_frame_errors++; break;
1049 case 0x2800: dev->stats.rx_crc_errors++; break;
1da177e4
LT		 1050 }
1051 } else {
1052 short pkt_len = rx_status & 0x7ff;
1053 struct sk_buff *skb;
1054
1055 skb = dev_alloc_skb(pkt_len+5);
1056
dd0fab5b 1057 pr_debug(" Receiving packet size %d status %4.4x.\n",
1da177e4
LT		 1058 pkt_len, rx_status);
1059 if (skb != NULL) {
1da177e4
LT		 1060 skb_reserve(skb, 2);
1061 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
1062 ((pkt_len+3)>>2));
1063 skb->protocol = eth_type_trans(skb, dev);
1064 netif_rx(skb);
2e8d31d5
PZ		 1065 dev->stats.rx_packets++;
1066 dev->stats.rx_bytes += pkt_len;
1da177e4 1067 } else {
dd0fab5b 1068 pr_debug("%s: couldn't allocate a sk_buff of"
1da177e4 1069 " size %d.\n", dev->name, pkt_len);
2e8d31d5 1070 dev->stats.rx_dropped++;
1da177e4
LT		 1071 }
1072 }
1073 tc574_wait_for_completion(dev, RxDiscard);
1074 }
1075
1076 return worklimit;
1077}
1078
1079static void netdev_get_drvinfo(struct net_device *dev,
1080 struct ethtool_drvinfo *info)
1081{
1082 strcpy(info->driver, "3c574_cs");
1083}
1084
7282d491 1085static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 1086 .get_drvinfo = netdev_get_drvinfo,
1087};
1088
1089/* Provide ioctl() calls to examine the MII xcvr state. */
1090static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1091{
1092 struct el3_private *lp = netdev_priv(dev);
906da809 1093 unsigned int ioaddr = dev->base_addr;
0fa0ee05 1094 struct mii_ioctl_data *data = if_mii(rq);
1da177e4
LT		 1095 int phy = lp->phys & 0x1f;
1096
dd0fab5b 1097 pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n",
1da177e4 1098 dev->name, rq->ifr_ifrn.ifrn_name, cmd,
0fa0ee05 1099 data->phy_id, data->reg_num, data->val_in, data->val_out);
1da177e4
LT		 1100
1101 switch(cmd) {
1102 case SIOCGMIIPHY: /* Get the address of the PHY in use. */
0fa0ee05 1103 data->phy_id = phy;
1da177e4
LT		 1104 case SIOCGMIIREG: /* Read the specified MII register. */
1105 {
1106 int saved_window;
1107 unsigned long flags;
1108
1109 spin_lock_irqsave(&lp->window_lock, flags);
1110 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1111 EL3WINDOW(4);
0fa0ee05
BH		 1112 data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f,
1113 data->reg_num & 0x1f);
1da177e4
LT		 1114 EL3WINDOW(saved_window);
1115 spin_unlock_irqrestore(&lp->window_lock, flags);
1116 return 0;
1117 }
1118 case SIOCSMIIREG: /* Write the specified MII register */
1119 {
1120 int saved_window;
1121 unsigned long flags;
1122
1da177e4
LT		 1123 spin_lock_irqsave(&lp->window_lock, flags);
1124 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1125 EL3WINDOW(4);
0fa0ee05
BH		 1126 mdio_write(ioaddr, data->phy_id & 0x1f,
1127 data->reg_num & 0x1f, data->val_in);
1da177e4
LT		 1128 EL3WINDOW(saved_window);
1129 spin_unlock_irqrestore(&lp->window_lock, flags);
1130 return 0;
1131 }
1132 default:
1133 return -EOPNOTSUPP;
1134 }
1135}
1136
1137/* The Odie chip has a 64 bin multicast filter, but the bit layout is not
1138 documented. Until it is we revert to receiving all multicast frames when
1139 any multicast reception is desired.
1140 Note: My other drivers emit a log message whenever promiscuous mode is
1141 entered to help detect password sniffers. This is less desirable on
1142 typical PC card machines, so we omit the message.
1143 */
1144
1145static void set_rx_mode(struct net_device *dev)
1146{
906da809 1147 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1148
1149 if (dev->flags & IFF_PROMISC)
1150 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1151 ioaddr + EL3_CMD);
4cd24eaf 1152 else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI))
1da177e4
LT		 1153 outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
1154 else
1155 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1156}
1157
e3eef534
KK		 1158static void set_multicast_list(struct net_device *dev)
1159{
1160 struct el3_private *lp = netdev_priv(dev);
1161 unsigned long flags;
1162
1163 spin_lock_irqsave(&lp->window_lock, flags);
1164 set_rx_mode(dev);
1165 spin_unlock_irqrestore(&lp->window_lock, flags);
1166}
1167
1da177e4
LT		 1168static int el3_close(struct net_device *dev)
1169{
906da809 1170 unsigned int ioaddr = dev->base_addr;
1da177e4 1171 struct el3_private *lp = netdev_priv(dev);
fba395ee 1172 struct pcmcia_device *link = lp->p_dev;
1da177e4 1173
dd0fab5b 1174 dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name);
1da177e4 1175
9940ec36 1176 if (pcmcia_dev_present(link)) {
1da177e4
LT		 1177 unsigned long flags;
1178
1179 /* Turn off statistics ASAP. We update lp->stats below. */
1180 outw(StatsDisable, ioaddr + EL3_CMD);
1181
1182 /* Disable the receiver and transmitter. */
1183 outw(RxDisable, ioaddr + EL3_CMD);
1184 outw(TxDisable, ioaddr + EL3_CMD);
1185
1186 /* Note: Switching to window 0 may disable the IRQ. */
1187 EL3WINDOW(0);
1188 spin_lock_irqsave(&lp->window_lock, flags);
1189 update_stats(dev);
1190 spin_unlock_irqrestore(&lp->window_lock, flags);
b9a6eaff
DR		 1191
1192 /* force interrupts off */
1193 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1da177e4
LT		 1194 }
1195
1196 link->open--;
1197 netif_stop_queue(dev);
1198 del_timer_sync(&lp->media);
1199
1200 return 0;
1201}
1202
270b6e94
DB		 1203static struct pcmcia_device_id tc574_ids[] = {
1204 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574),
f0a3a153 1205 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"),
270b6e94
DB		 1206 PCMCIA_DEVICE_NULL,
1207};
1208MODULE_DEVICE_TABLE(pcmcia, tc574_ids);
1209
1da177e4
LT		 1210static struct pcmcia_driver tc574_driver = {
1211 .owner = THIS_MODULE,
1212 .drv = {
1213 .name = "3c574_cs",
1214 },
15b99ac1 1215 .probe = tc574_probe,
cc3b4866 1216 .remove = tc574_detach,
270b6e94 1217 .id_table = tc574_ids,
98e4c28b
DB		 1218 .suspend = tc574_suspend,
1219 .resume = tc574_resume,
1da177e4
LT		 1220};
1221
1222static int __init init_tc574(void)
1223{
1224 return pcmcia_register_driver(&tc574_driver);
1225}
1226
1227static void __exit exit_tc574(void)
1228{
1229 pcmcia_unregister_driver(&tc574_driver);
1da177e4
LT		 1230}
1231
1232module_init(init_tc574);
1233module_exit(exit_tc574);
Linux kernel - Deliverables
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