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pcmcia: remove deprecated handle_to_dev() macro
[linux-2.6-block.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;
5e7bf8cc 286 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT;
1da177e4
LT		 287 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
288 link->irq.Handler = &el3_interrupt;
289 link->irq.Instance = dev;
290 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 291 link->conf.IntType = INT_MEMORY_AND_IO;
292 link->conf.ConfigIndex = 1;
1da177e4 293
fb72e2ff 294 dev->netdev_ops = &el3_netdev_ops;
1da177e4 295 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
1da177e4 296 dev->watchdog_timeo = TX_TIMEOUT;
1da177e4 297
15b99ac1 298 return tc574_config(link);
1da177e4
LT		 299} /* tc574_attach */
300
301/*
302
303 This deletes a driver "instance". The device is de-registered
304 with Card Services. If it has been released, all local data
305 structures are freed. Otherwise, the structures will be freed
306 when the device is released.
307
308*/
309
fba395ee 310static void tc574_detach(struct pcmcia_device *link)
1da177e4
LT		 311{
312 struct net_device *dev = link->priv;
1da177e4 313
dd0fab5b 314 dev_dbg(&link->dev, "3c574_detach()\n");
1da177e4 315
fd238232 316 if (link->dev_node)
1da177e4
LT		 317 unregister_netdev(dev);
318
e2d40963 319 tc574_release(link);
1da177e4 320
1da177e4
LT		 321 free_netdev(dev);
322} /* tc574_detach */
323
324/*
325 tc574_config() is scheduled to run after a CARD_INSERTION event
326 is received, to configure the PCMCIA socket, and to make the
327 ethernet device available to the system.
328*/
329
f71e1309 330static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
1da177e4 331
15b99ac1 332static int tc574_config(struct pcmcia_device *link)
1da177e4 333{
1da177e4
LT		 334 struct net_device *dev = link->priv;
335 struct el3_private *lp = netdev_priv(dev);
dd0fab5b 336 int ret, i, j;
906da809 337 unsigned int ioaddr;
b1e247ad 338 __be16 *phys_addr;
1da177e4 339 char *cardname;
b6659824 340 __u32 config;
dddfbd82
DB		 341 u8 *buf;
342 size_t len;
1da177e4 343
b1e247ad 344 phys_addr = (__be16 *)dev->dev_addr;
1da177e4 345
dd0fab5b 346 dev_dbg(&link->dev, "3c574_config()\n");
1da177e4 347
1da177e4
LT		 348 link->io.IOAddrLines = 16;
349 for (i = j = 0; j < 0x400; j += 0x20) {
350 link->io.BasePort1 = j ^ 0x300;
fba395ee 351 i = pcmcia_request_io(link, &link->io);
4c89e88b
DB		 352 if (i == 0)
353 break;
1da177e4 354 }
dd0fab5b
DB		 355 if (i != 0)
356 goto failed;
357
358 ret = pcmcia_request_irq(link, &link->irq);
359 if (ret)
360 goto failed;
361
362 ret = pcmcia_request_configuration(link, &link->conf);
363 if (ret)
1da177e4 364 goto failed;
1da177e4
LT		 365
366 dev->irq = link->irq.AssignedIRQ;
367 dev->base_addr = link->io.BasePort1;
368
369 ioaddr = dev->base_addr;
370
371 /* The 3c574 normally uses an EEPROM for configuration info, including
372 the hardware address. The future products may include a modem chip
373 and put the address in the CIS. */
dddfbd82
DB		 374
375 len = pcmcia_get_tuple(link, 0x88, &buf);
376 if (buf && len >= 6) {
1da177e4 377 for (i = 0; i < 3; i++)
dddfbd82
DB		 378 phys_addr[i] = htons(le16_to_cpu(buf[i * 2]));
379 kfree(buf);
1da177e4 380 } else {
dddfbd82 381 kfree(buf); /* 0 < len < 6 */
1da177e4
LT		 382 EL3WINDOW(0);
383 for (i = 0; i < 3; i++)
384 phys_addr[i] = htons(read_eeprom(ioaddr, i + 10));
b1e247ad 385 if (phys_addr[0] == htons(0x6060)) {
1da177e4
LT		 386 printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx"
387 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
388 goto failed;
389 }
390 }
a9606fd3
DB		 391 if (link->prod_id[1])
392 cardname = link->prod_id[1];
393 else
1da177e4
LT		 394 cardname = "3Com 3c574";
395
396 {
397 u_char mcr;
398 outw(2<<11, ioaddr + RunnerRdCtrl);
399 mcr = inb(ioaddr + 2);
400 outw(0<<11, ioaddr + RunnerRdCtrl);
401 printk(KERN_INFO " ASIC rev %d,", mcr>>3);
402 EL3WINDOW(3);
b6659824
AV		 403 config = inl(ioaddr + Wn3_Config);
404 lp->default_media = (config & Xcvr) >> Xcvr_shift;
405 lp->autoselect = config & Autoselect ? 1 : 0;
1da177e4
LT		 406 }
407
408 init_timer(&lp->media);
409
410 {
411 int phy;
412
413 /* Roadrunner only: Turn on the MII transceiver */
414 outw(0x8040, ioaddr + Wn3_Options);
415 mdelay(1);
416 outw(0xc040, ioaddr + Wn3_Options);
417 tc574_wait_for_completion(dev, TxReset);
418 tc574_wait_for_completion(dev, RxReset);
419 mdelay(1);
420 outw(0x8040, ioaddr + Wn3_Options);
421
422 EL3WINDOW(4);
423 for (phy = 1; phy <= 32; phy++) {
424 int mii_status;
425 mdio_sync(ioaddr, 32);
426 mii_status = mdio_read(ioaddr, phy & 0x1f, 1);
427 if (mii_status != 0xffff) {
428 lp->phys = phy & 0x1f;
dd0fab5b
DB		 429 dev_dbg(&link->dev, " MII transceiver at "
430 "index %d, status %x.\n",
1da177e4
LT		 431 phy, mii_status);
432 if ((mii_status & 0x0040) == 0)
433 mii_preamble_required = 1;
434 break;
435 }
436 }
437 if (phy > 32) {
438 printk(KERN_NOTICE " No MII transceivers found!\n");
439 goto failed;
440 }
441 i = mdio_read(ioaddr, lp->phys, 16) | 0x40;
442 mdio_write(ioaddr, lp->phys, 16, i);
443 lp->advertising = mdio_read(ioaddr, lp->phys, 4);
444 if (full_duplex) {
445 /* Only advertise the FD media types. */
446 lp->advertising &= ~0x02a0;
447 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
448 }
449 }
450
fd238232 451 link->dev_node = &lp->node;
dd2e5a15 452 SET_NETDEV_DEV(dev, &link->dev);
1da177e4
LT		 453
454 if (register_netdev(dev) != 0) {
455 printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n");
fd238232 456 link->dev_node = NULL;
1da177e4
LT		 457 goto failed;
458 }
459
460 strcpy(lp->node.dev_name, dev->name);
461
0795af57 462 printk(KERN_INFO "%s: %s at io %#3lx, irq %d, "
e174961c 463 "hw_addr %pM.\n",
0795af57 464 dev->name, cardname, dev->base_addr, dev->irq,
e174961c 465 dev->dev_addr);
1da177e4 466 printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n",
b6659824
AV		 467 8 << config & Ram_size,
468 ram_split[(config & Ram_split) >> Ram_split_shift],
469 config & Autoselect ? "autoselect " : "");
1da177e4 470
15b99ac1 471 return 0;
1da177e4 472
1da177e4
LT		 473failed:
474 tc574_release(link);
15b99ac1 475 return -ENODEV;
1da177e4
LT		 476
477} /* tc574_config */
478
479/*
480 After a card is removed, tc574_release() will unregister the net
481 device, and release the PCMCIA configuration. If the device is
482 still open, this will be postponed until it is closed.
483*/
484
fba395ee 485static void tc574_release(struct pcmcia_device *link)
1da177e4 486{
fba395ee 487 pcmcia_disable_device(link);
1da177e4
LT		 488}
489
fba395ee 490static int tc574_suspend(struct pcmcia_device *link)
98e4c28b 491{
98e4c28b
DB		 492 struct net_device *dev = link->priv;
493
e2d40963 494 if (link->open)
8661bb5b 495 netif_device_detach(dev);
98e4c28b
DB		 496
497 return 0;
498}
499
fba395ee 500static int tc574_resume(struct pcmcia_device *link)
98e4c28b 501{
98e4c28b
DB		 502 struct net_device *dev = link->priv;
503
e2d40963 504 if (link->open) {
8661bb5b
DB		 505 tc574_reset(dev);
506 netif_device_attach(dev);
98e4c28b
DB		 507 }
508
509 return 0;
510}
511
1da177e4
LT		 512static void dump_status(struct net_device *dev)
513{
906da809 514 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 515 EL3WINDOW(1);
516 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
517 "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS),
518 inw(ioaddr+RxStatus), inb(ioaddr+TxStatus),
519 inw(ioaddr+TxFree));
520 EL3WINDOW(4);
521 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
522 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
523 inw(ioaddr+0x08), inw(ioaddr+0x0a));
524 EL3WINDOW(1);
525}
526
527/*
528 Use this for commands that may take time to finish
529*/
530static void tc574_wait_for_completion(struct net_device *dev, int cmd)
531{
532 int i = 1500;
533 outw(cmd, dev->base_addr + EL3_CMD);
534 while (--i > 0)
535 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
536 if (i == 0)
537 printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd);
538}
539
540/* Read a word from the EEPROM using the regular EEPROM access register.
541 Assume that we are in register window zero.
542 */
906da809 543static unsigned short read_eeprom(unsigned int ioaddr, int index)
1da177e4
LT		 544{
545 int timer;
546 outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd);
547 /* Pause for at least 162 usec for the read to take place. */
548 for (timer = 1620; timer >= 0; timer--) {
549 if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
550 break;
551 }
552 return inw(ioaddr + Wn0EepromData);
553}
554
555/* MII transceiver control section.
556 Read and write the MII registers using software-generated serial
557 MDIO protocol. See the MII specifications or DP83840A data sheet
558 for details.
559 The maxium data clock rate is 2.5 Mhz. The timing is easily met by the
560 slow PC card interface. */
561
562#define MDIO_SHIFT_CLK 0x01
563#define MDIO_DIR_WRITE 0x04
564#define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE)
565#define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE)
566#define MDIO_DATA_READ 0x02
567#define MDIO_ENB_IN 0x00
568
569/* Generate the preamble required for initial synchronization and
570 a few older transceivers. */
906da809 571static void mdio_sync(unsigned int ioaddr, int bits)
1da177e4 572{
906da809 573 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 574
575 /* Establish sync by sending at least 32 logic ones. */
576 while (-- bits >= 0) {
577 outw(MDIO_DATA_WRITE1, mdio_addr);
578 outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr);
579 }
580}
581
906da809 582static int mdio_read(unsigned int ioaddr, int phy_id, int location)
1da177e4
LT		 583{
584 int i;
585 int read_cmd = (0xf6 << 10) | (phy_id << 5) | location;
586 unsigned int retval = 0;
906da809 587 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 588
589 if (mii_preamble_required)
590 mdio_sync(ioaddr, 32);
591
592 /* Shift the read command bits out. */
593 for (i = 14; i >= 0; i--) {
594 int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
595 outw(dataval, mdio_addr);
596 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
597 }
598 /* Read the two transition, 16 data, and wire-idle bits. */
599 for (i = 19; i > 0; i--) {
600 outw(MDIO_ENB_IN, mdio_addr);
601 retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0);
602 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
603 }
604 return (retval>>1) & 0xffff;
605}
606
906da809 607static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value)
1da177e4
LT		 608{
609 int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value;
906da809 610 unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
1da177e4
LT		 611 int i;
612
613 if (mii_preamble_required)
614 mdio_sync(ioaddr, 32);
615
616 /* Shift the command bits out. */
617 for (i = 31; i >= 0; i--) {
618 int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
619 outw(dataval, mdio_addr);
620 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
621 }
622 /* Leave the interface idle. */
623 for (i = 1; i >= 0; i--) {
624 outw(MDIO_ENB_IN, mdio_addr);
625 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
626 }
627
628 return;
629}
630
631/* Reset and restore all of the 3c574 registers. */
632static void tc574_reset(struct net_device *dev)
633{
634 struct el3_private *lp = netdev_priv(dev);
635 int i;
906da809 636 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 637 unsigned long flags;
638
639 tc574_wait_for_completion(dev, TotalReset|0x10);
640
641 spin_lock_irqsave(&lp->window_lock, flags);
642 /* Clear any transactions in progress. */
643 outw(0, ioaddr + RunnerWrCtrl);
644 outw(0, ioaddr + RunnerRdCtrl);
645
646 /* Set the station address and mask. */
647 EL3WINDOW(2);
648 for (i = 0; i < 6; i++)
649 outb(dev->dev_addr[i], ioaddr + i);
650 for (; i < 12; i+=2)
651 outw(0, ioaddr + i);
652
653 /* Reset config options */
654 EL3WINDOW(3);
655 outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
656 outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,
657 ioaddr + Wn3_Config);
658 /* Roadrunner only: Turn on the MII transceiver. */
659 outw(0x8040, ioaddr + Wn3_Options);
660 mdelay(1);
661 outw(0xc040, ioaddr + Wn3_Options);
662 EL3WINDOW(1);
663 spin_unlock_irqrestore(&lp->window_lock, flags);
664
665 tc574_wait_for_completion(dev, TxReset);
666 tc574_wait_for_completion(dev, RxReset);
667 mdelay(1);
668 spin_lock_irqsave(&lp->window_lock, flags);
669 EL3WINDOW(3);
670 outw(0x8040, ioaddr + Wn3_Options);
671
672 /* Switch to the stats window, and clear all stats by reading. */
673 outw(StatsDisable, ioaddr + EL3_CMD);
674 EL3WINDOW(6);
675 for (i = 0; i < 10; i++)
676 inb(ioaddr + i);
677 inw(ioaddr + 10);
678 inw(ioaddr + 12);
679 EL3WINDOW(4);
680 inb(ioaddr + 12);
681 inb(ioaddr + 13);
682
683 /* .. enable any extra statistics bits.. */
684 outw(0x0040, ioaddr + Wn4_NetDiag);
685
686 EL3WINDOW(1);
687 spin_unlock_irqrestore(&lp->window_lock, flags);
688
689 /* .. re-sync MII and re-fill what NWay is advertising. */
690 mdio_sync(ioaddr, 32);
691 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
692 if (!auto_polarity) {
693 /* works for TDK 78Q2120 series MII's */
1569d9e8 694 i = mdio_read(ioaddr, lp->phys, 16) | 0x20;
1da177e4
LT		 695 mdio_write(ioaddr, lp->phys, 16, i);
696 }
697
698 spin_lock_irqsave(&lp->window_lock, flags);
699 /* Switch to register set 1 for normal use, just for TxFree. */
700 set_rx_mode(dev);
701 spin_unlock_irqrestore(&lp->window_lock, flags);
702 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
703 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
704 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
705 /* Allow status bits to be seen. */
706 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
707 /* Ack all pending events, and set active indicator mask. */
708 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
709 ioaddr + EL3_CMD);
710 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
711 | AdapterFailure | RxEarly, ioaddr + EL3_CMD);
712}
713
714static int el3_open(struct net_device *dev)
715{
716 struct el3_private *lp = netdev_priv(dev);
fba395ee 717 struct pcmcia_device *link = lp->p_dev;
1da177e4 718
9940ec36 719 if (!pcmcia_dev_present(link))
1da177e4
LT		 720 return -ENODEV;
721
722 link->open++;
723 netif_start_queue(dev);
724
725 tc574_reset(dev);
726 lp->media.function = &media_check;
727 lp->media.data = (unsigned long) dev;
728 lp->media.expires = jiffies + HZ;
729 add_timer(&lp->media);
730
dd0fab5b 731 dev_dbg(&link->dev, "%s: opened, status %4.4x.\n",
1da177e4
LT		 732 dev->name, inw(dev->base_addr + EL3_STATUS));
733
734 return 0;
735}
736
737static void el3_tx_timeout(struct net_device *dev)
738{
906da809 739 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 740
741 printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name);
742 dump_status(dev);
2e8d31d5 743 dev->stats.tx_errors++;
1da177e4
LT		 744 dev->trans_start = jiffies;
745 /* Issue TX_RESET and TX_START commands. */
746 tc574_wait_for_completion(dev, TxReset);
747 outw(TxEnable, ioaddr + EL3_CMD);
748 netif_wake_queue(dev);
749}
750
751static void pop_tx_status(struct net_device *dev)
752{
906da809 753 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 754 int i;
755
756 /* Clear the Tx status stack. */
757 for (i = 32; i > 0; i--) {
758 u_char tx_status = inb(ioaddr + TxStatus);
759 if (!(tx_status & 0x84))
760 break;
761 /* reset transmitter on jabber error or underrun */
762 if (tx_status & 0x30)
763 tc574_wait_for_completion(dev, TxReset);
764 if (tx_status & 0x38) {
dd0fab5b 765 pr_debug("%s: transmit error: status 0x%02x\n",
1da177e4
LT		 766 dev->name, tx_status);
767 outw(TxEnable, ioaddr + EL3_CMD);
2e8d31d5 768 dev->stats.tx_aborted_errors++;
1da177e4
LT		 769 }
770 outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
771 }
772}
773
dbf02fae
SH		 774static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
775 struct net_device *dev)
1da177e4 776{
906da809 777 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 778 struct el3_private *lp = netdev_priv(dev);
779 unsigned long flags;
780
dd0fab5b 781 pr_debug("%s: el3_start_xmit(length = %ld) called, "
1da177e4
LT		 782 "status %4.4x.\n", dev->name, (long)skb->len,
783 inw(ioaddr + EL3_STATUS));
784
785 spin_lock_irqsave(&lp->window_lock, flags);
786 outw(skb->len, ioaddr + TX_FIFO);
787 outw(0, ioaddr + TX_FIFO);
788 outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
789
790 dev->trans_start = jiffies;
791
792 /* TxFree appears only in Window 1, not offset 0x1c. */
793 if (inw(ioaddr + TxFree) <= 1536) {
794 netif_stop_queue(dev);
795 /* Interrupt us when the FIFO has room for max-sized packet.
796 The threshold is in units of dwords. */
797 outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD);
798 }
799
800 pop_tx_status(dev);
801 spin_unlock_irqrestore(&lp->window_lock, flags);
802 dev_kfree_skb(skb);
6ed10654 803 return NETDEV_TX_OK;
1da177e4
LT		 804}
805
806/* The EL3 interrupt handler. */
7d12e780 807static irqreturn_t el3_interrupt(int irq, void *dev_id)
1da177e4
LT		 808{
809 struct net_device *dev = (struct net_device *) dev_id;
810 struct el3_private *lp = netdev_priv(dev);
906da809 811 unsigned int ioaddr;
1da177e4
LT		 812 unsigned status;
813 int work_budget = max_interrupt_work;
814 int handled = 0;
815
816 if (!netif_device_present(dev))
817 return IRQ_NONE;
818 ioaddr = dev->base_addr;
819
dd0fab5b 820 pr_debug("%s: interrupt, status %4.4x.\n",
1da177e4
LT		 821 dev->name, inw(ioaddr + EL3_STATUS));
822
823 spin_lock(&lp->window_lock);
824
825 while ((status = inw(ioaddr + EL3_STATUS)) &
826 (IntLatch | RxComplete | RxEarly | StatsFull)) {
827 if (!netif_device_present(dev) ||
828 ((status & 0xe000) != 0x2000)) {
dd0fab5b 829 pr_debug("%s: Interrupt from dead card\n", dev->name);
1da177e4
LT		 830 break;
831 }
832
833 handled = 1;
834
835 if (status & RxComplete)
836 work_budget = el3_rx(dev, work_budget);
837
838 if (status & TxAvailable) {
dd0fab5b 839 pr_debug(" TX room bit was handled.\n");
1da177e4
LT		 840 /* There's room in the FIFO for a full-sized packet. */
841 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
842 netif_wake_queue(dev);
843 }
844
845 if (status & TxComplete)
846 pop_tx_status(dev);
847
848 if (status & (AdapterFailure | RxEarly | StatsFull)) {
849 /* Handle all uncommon interrupts. */
850 if (status & StatsFull)
851 update_stats(dev);
852 if (status & RxEarly) {
853 work_budget = el3_rx(dev, work_budget);
854 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
855 }
856 if (status & AdapterFailure) {
857 u16 fifo_diag;
858 EL3WINDOW(4);
859 fifo_diag = inw(ioaddr + Wn4_FIFODiag);
860 EL3WINDOW(1);
861 printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic"
862 " register %04x.\n", dev->name, fifo_diag);
863 if (fifo_diag & 0x0400) {
864 /* Tx overrun */
865 tc574_wait_for_completion(dev, TxReset);
866 outw(TxEnable, ioaddr + EL3_CMD);
867 }
868 if (fifo_diag & 0x2000) {
869 /* Rx underrun */
870 tc574_wait_for_completion(dev, RxReset);
871 set_rx_mode(dev);
872 outw(RxEnable, ioaddr + EL3_CMD);
873 }
874 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
875 }
876 }
877
878 if (--work_budget < 0) {
dd0fab5b 879 pr_debug("%s: Too much work in interrupt, "
1da177e4
LT		 880 "status %4.4x.\n", dev->name, status);
881 /* Clear all interrupts */
882 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
883 break;
884 }
885 /* Acknowledge the IRQ. */
886 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
887 }
888
dd0fab5b 889 pr_debug("%s: exiting interrupt, status %4.4x.\n",
1da177e4
LT		 890 dev->name, inw(ioaddr + EL3_STATUS));
891
892 spin_unlock(&lp->window_lock);
893 return IRQ_RETVAL(handled);
894}
895
896/*
897 This timer serves two purposes: to check for missed interrupts
898 (and as a last resort, poll the NIC for events), and to monitor
899 the MII, reporting changes in cable status.
900*/
901static void media_check(unsigned long arg)
902{
903 struct net_device *dev = (struct net_device *) arg;
904 struct el3_private *lp = netdev_priv(dev);
906da809 905 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 906 unsigned long flags;
907 unsigned short /* cable, */ media, partner;
908
909 if (!netif_device_present(dev))
910 goto reschedule;
911
912 /* Check for pending interrupt with expired latency timer: with
913 this, we can limp along even if the interrupt is blocked */
914 if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) {
915 if (!lp->fast_poll)
916 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
e363d138 917 el3_interrupt(dev->irq, dev);
1da177e4
LT		 918 lp->fast_poll = HZ;
919 }
920 if (lp->fast_poll) {
921 lp->fast_poll--;
922 lp->media.expires = jiffies + 2*HZ/100;
923 add_timer(&lp->media);
924 return;
925 }
926
927 spin_lock_irqsave(&lp->window_lock, flags);
928 EL3WINDOW(4);
929 media = mdio_read(ioaddr, lp->phys, 1);
930 partner = mdio_read(ioaddr, lp->phys, 5);
931 EL3WINDOW(1);
932
933 if (media != lp->media_status) {
934 if ((media ^ lp->media_status) & 0x0004)
935 printk(KERN_INFO "%s: %s link beat\n", dev->name,
936 (lp->media_status & 0x0004) ? "lost" : "found");
937 if ((media ^ lp->media_status) & 0x0020) {
938 lp->partner = 0;
939 if (lp->media_status & 0x0020) {
940 printk(KERN_INFO "%s: autonegotiation restarted\n",
941 dev->name);
942 } else if (partner) {
943 partner &= lp->advertising;
944 lp->partner = partner;
945 printk(KERN_INFO "%s: autonegotiation complete: "
946 "%sbaseT-%cD selected\n", dev->name,
947 ((partner & 0x0180) ? "100" : "10"),
948 ((partner & 0x0140) ? 'F' : 'H'));
949 } else {
950 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
951 dev->name);
952 }
953
954 EL3WINDOW(3);
955 outb((partner & 0x0140 ? 0x20 : 0) |
956 (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
957 EL3WINDOW(1);
958
959 }
960 if (media & 0x0010)
961 printk(KERN_INFO "%s: remote fault detected\n",
962 dev->name);
963 if (media & 0x0002)
964 printk(KERN_INFO "%s: jabber detected\n", dev->name);
965 lp->media_status = media;
966 }
967 spin_unlock_irqrestore(&lp->window_lock, flags);
968
969reschedule:
970 lp->media.expires = jiffies + HZ;
971 add_timer(&lp->media);
972}
973
974static struct net_device_stats *el3_get_stats(struct net_device *dev)
975{
976 struct el3_private *lp = netdev_priv(dev);
977
978 if (netif_device_present(dev)) {
979 unsigned long flags;
980 spin_lock_irqsave(&lp->window_lock, flags);
981 update_stats(dev);
982 spin_unlock_irqrestore(&lp->window_lock, flags);
983 }
2e8d31d5 984 return &dev->stats;
1da177e4
LT		 985}
986
987/* Update statistics.
988 Suprisingly this need not be run single-threaded, but it effectively is.
989 The counters clear when read, so the adds must merely be atomic.
990 */
991static void update_stats(struct net_device *dev)
992{
906da809 993 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 994 u8 rx, tx, up;
995
dd0fab5b 996 pr_debug("%s: updating the statistics.\n", dev->name);
1da177e4
LT		 997
998 if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */
999 return;
1000
1001 /* Unlike the 3c509 we need not turn off stats updates while reading. */
1002 /* Switch to the stats window, and read everything. */
1003 EL3WINDOW(6);
2e8d31d5
PZ		 1004 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
1005 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1da177e4 1006 /* Multiple collisions. */ inb(ioaddr + 2);
2e8d31d5
PZ		 1007 dev->stats.collisions += inb(ioaddr + 3);
1008 dev->stats.tx_window_errors += inb(ioaddr + 4);
1009 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
1010 dev->stats.tx_packets += inb(ioaddr + 6);
1da177e4 1011 up = inb(ioaddr + 9);
2e8d31d5 1012 dev->stats.tx_packets += (up&0x30) << 4;
1da177e4
LT		 1013 /* Rx packets */ inb(ioaddr + 7);
1014 /* Tx deferrals */ inb(ioaddr + 8);
1015 rx = inw(ioaddr + 10);
1016 tx = inw(ioaddr + 12);
1017
1018 EL3WINDOW(4);
1019 /* BadSSD */ inb(ioaddr + 12);
1020 up = inb(ioaddr + 13);
1021
2e8d31d5 1022 dev->stats.tx_bytes += tx + ((up & 0xf0) << 12);
1da177e4
LT		 1023
1024 EL3WINDOW(1);
1025}
1026
1027static int el3_rx(struct net_device *dev, int worklimit)
1028{
906da809 1029 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1030 short rx_status;
1031
dd0fab5b 1032 pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
1da177e4
LT		 1033 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus));
1034 while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) &&
b9bdcd9b
RK		 1035 worklimit > 0) {
1036 worklimit--;
1da177e4
LT		 1037 if (rx_status & 0x4000) { /* Error, update stats. */
1038 short error = rx_status & 0x3800;
2e8d31d5 1039 dev->stats.rx_errors++;
1da177e4 1040 switch (error) {
2e8d31d5
PZ		 1041 case 0x0000: dev->stats.rx_over_errors++; break;
1042 case 0x0800: dev->stats.rx_length_errors++; break;
1043 case 0x1000: dev->stats.rx_frame_errors++; break;
1044 case 0x1800: dev->stats.rx_length_errors++; break;
1045 case 0x2000: dev->stats.rx_frame_errors++; break;
1046 case 0x2800: dev->stats.rx_crc_errors++; break;
1da177e4
LT		 1047 }
1048 } else {
1049 short pkt_len = rx_status & 0x7ff;
1050 struct sk_buff *skb;
1051
1052 skb = dev_alloc_skb(pkt_len+5);
1053
dd0fab5b 1054 pr_debug(" Receiving packet size %d status %4.4x.\n",
1da177e4
LT		 1055 pkt_len, rx_status);
1056 if (skb != NULL) {
1da177e4
LT		 1057 skb_reserve(skb, 2);
1058 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
1059 ((pkt_len+3)>>2));
1060 skb->protocol = eth_type_trans(skb, dev);
1061 netif_rx(skb);
2e8d31d5
PZ		 1062 dev->stats.rx_packets++;
1063 dev->stats.rx_bytes += pkt_len;
1da177e4 1064 } else {
dd0fab5b 1065 pr_debug("%s: couldn't allocate a sk_buff of"
1da177e4 1066 " size %d.\n", dev->name, pkt_len);
2e8d31d5 1067 dev->stats.rx_dropped++;
1da177e4
LT		 1068 }
1069 }
1070 tc574_wait_for_completion(dev, RxDiscard);
1071 }
1072
1073 return worklimit;
1074}
1075
1076static void netdev_get_drvinfo(struct net_device *dev,
1077 struct ethtool_drvinfo *info)
1078{
1079 strcpy(info->driver, "3c574_cs");
1080}
1081
7282d491 1082static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 1083 .get_drvinfo = netdev_get_drvinfo,
1084};
1085
1086/* Provide ioctl() calls to examine the MII xcvr state. */
1087static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1088{
1089 struct el3_private *lp = netdev_priv(dev);
906da809 1090 unsigned int ioaddr = dev->base_addr;
0fa0ee05 1091 struct mii_ioctl_data *data = if_mii(rq);
1da177e4
LT		 1092 int phy = lp->phys & 0x1f;
1093
dd0fab5b 1094 pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n",
1da177e4 1095 dev->name, rq->ifr_ifrn.ifrn_name, cmd,
0fa0ee05 1096 data->phy_id, data->reg_num, data->val_in, data->val_out);
1da177e4
LT		 1097
1098 switch(cmd) {
1099 case SIOCGMIIPHY: /* Get the address of the PHY in use. */
0fa0ee05 1100 data->phy_id = phy;
1da177e4
LT		 1101 case SIOCGMIIREG: /* Read the specified MII register. */
1102 {
1103 int saved_window;
1104 unsigned long flags;
1105
1106 spin_lock_irqsave(&lp->window_lock, flags);
1107 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1108 EL3WINDOW(4);
0fa0ee05
BH		 1109 data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f,
1110 data->reg_num & 0x1f);
1da177e4
LT		 1111 EL3WINDOW(saved_window);
1112 spin_unlock_irqrestore(&lp->window_lock, flags);
1113 return 0;
1114 }
1115 case SIOCSMIIREG: /* Write the specified MII register */
1116 {
1117 int saved_window;
1118 unsigned long flags;
1119
1da177e4
LT		 1120 spin_lock_irqsave(&lp->window_lock, flags);
1121 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1122 EL3WINDOW(4);
0fa0ee05
BH		 1123 mdio_write(ioaddr, data->phy_id & 0x1f,
1124 data->reg_num & 0x1f, data->val_in);
1da177e4
LT		 1125 EL3WINDOW(saved_window);
1126 spin_unlock_irqrestore(&lp->window_lock, flags);
1127 return 0;
1128 }
1129 default:
1130 return -EOPNOTSUPP;
1131 }
1132}
1133
1134/* The Odie chip has a 64 bin multicast filter, but the bit layout is not
1135 documented. Until it is we revert to receiving all multicast frames when
1136 any multicast reception is desired.
1137 Note: My other drivers emit a log message whenever promiscuous mode is
1138 entered to help detect password sniffers. This is less desirable on
1139 typical PC card machines, so we omit the message.
1140 */
1141
1142static void set_rx_mode(struct net_device *dev)
1143{
906da809 1144 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1145
1146 if (dev->flags & IFF_PROMISC)
1147 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1148 ioaddr + EL3_CMD);
1149 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
1150 outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
1151 else
1152 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1153}
1154
e3eef534
KK		 1155static void set_multicast_list(struct net_device *dev)
1156{
1157 struct el3_private *lp = netdev_priv(dev);
1158 unsigned long flags;
1159
1160 spin_lock_irqsave(&lp->window_lock, flags);
1161 set_rx_mode(dev);
1162 spin_unlock_irqrestore(&lp->window_lock, flags);
1163}
1164
1da177e4
LT		 1165static int el3_close(struct net_device *dev)
1166{
906da809 1167 unsigned int ioaddr = dev->base_addr;
1da177e4 1168 struct el3_private *lp = netdev_priv(dev);
fba395ee 1169 struct pcmcia_device *link = lp->p_dev;
1da177e4 1170
dd0fab5b 1171 dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name);
1da177e4 1172
9940ec36 1173 if (pcmcia_dev_present(link)) {
1da177e4
LT		 1174 unsigned long flags;
1175
1176 /* Turn off statistics ASAP. We update lp->stats below. */
1177 outw(StatsDisable, ioaddr + EL3_CMD);
1178
1179 /* Disable the receiver and transmitter. */
1180 outw(RxDisable, ioaddr + EL3_CMD);
1181 outw(TxDisable, ioaddr + EL3_CMD);
1182
1183 /* Note: Switching to window 0 may disable the IRQ. */
1184 EL3WINDOW(0);
1185 spin_lock_irqsave(&lp->window_lock, flags);
1186 update_stats(dev);
1187 spin_unlock_irqrestore(&lp->window_lock, flags);
b9a6eaff
DR		 1188
1189 /* force interrupts off */
1190 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1da177e4
LT		 1191 }
1192
1193 link->open--;
1194 netif_stop_queue(dev);
1195 del_timer_sync(&lp->media);
1196
1197 return 0;
1198}
1199
270b6e94
DB		 1200static struct pcmcia_device_id tc574_ids[] = {
1201 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574),
f0a3a153 1202 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"),
270b6e94
DB		 1203 PCMCIA_DEVICE_NULL,
1204};
1205MODULE_DEVICE_TABLE(pcmcia, tc574_ids);
1206
1da177e4
LT		 1207static struct pcmcia_driver tc574_driver = {
1208 .owner = THIS_MODULE,
1209 .drv = {
1210 .name = "3c574_cs",
1211 },
15b99ac1 1212 .probe = tc574_probe,
cc3b4866 1213 .remove = tc574_detach,
270b6e94 1214 .id_table = tc574_ids,
98e4c28b
DB		 1215 .suspend = tc574_suspend,
1216 .resume = tc574_resume,
1da177e4
LT		 1217};
1218
1219static int __init init_tc574(void)
1220{
1221 return pcmcia_register_driver(&tc574_driver);
1222}
1223
1224static void __exit exit_tc574(void)
1225{
1226 pcmcia_unregister_driver(&tc574_driver);
1da177e4
LT		 1227}
1228
1229module_init(init_tc574);
1230module_exit(exit_tc574);
Linux 6.x block layer and io_uring tree(s)