Commit | Line | Data |
---|---|---|
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 | ||
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/pf/DP/DP83840.html | |
66 | ||
67 | Thanks to Terry Murphy of 3Com for providing development information for | |
68 | earlier 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/cistpl.h> |
91 | #include <pcmcia/cisreg.h> | |
92 | #include <pcmcia/ciscode.h> | |
93 | #include <pcmcia/ds.h> | |
1da177e4 LT |
94 | |
95 | #include <asm/uaccess.h> | |
96 | #include <asm/io.h> | |
97 | #include <asm/system.h> | |
98 | ||
99 | /*====================================================================*/ | |
100 | ||
101 | /* Module parameters */ | |
102 | ||
103 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
104 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); | |
105 | MODULE_LICENSE("GPL"); | |
106 | ||
107 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
108 | ||
109 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
110 | INT_MODULE_PARM(max_interrupt_work, 32); | |
111 | ||
112 | /* Force full duplex modes? */ | |
113 | INT_MODULE_PARM(full_duplex, 0); | |
114 | ||
115 | /* Autodetect link polarity reversal? */ | |
116 | INT_MODULE_PARM(auto_polarity, 1); | |
117 | ||
1da177e4 LT |
118 | |
119 | /*====================================================================*/ | |
120 | ||
121 | /* Time in jiffies before concluding the transmitter is hung. */ | |
122 | #define TX_TIMEOUT ((800*HZ)/1000) | |
123 | ||
124 | /* To minimize the size of the driver source and make the driver more | |
125 | readable not all constants are symbolically defined. | |
126 | You'll need the manual if you want to understand driver details anyway. */ | |
127 | /* Offsets from base I/O address. */ | |
128 | #define EL3_DATA 0x00 | |
129 | #define EL3_CMD 0x0e | |
130 | #define EL3_STATUS 0x0e | |
131 | ||
132 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
133 | ||
134 | /* The top five bits written to EL3_CMD are a command, the lower | |
135 | 11 bits are the parameter, if applicable. */ | |
136 | enum el3_cmds { | |
137 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, | |
138 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, | |
139 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, | |
140 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, | |
141 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, | |
142 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, | |
143 | StatsDisable = 22<<11, StopCoax = 23<<11, | |
144 | }; | |
145 | ||
146 | enum elxl_status { | |
147 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, | |
148 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, | |
149 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; | |
150 | ||
151 | /* The SetRxFilter command accepts the following classes: */ | |
152 | enum RxFilter { | |
153 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 | |
154 | }; | |
155 | ||
156 | enum Window0 { | |
157 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ | |
158 | IntrStatus=0x0E, /* Valid in all windows. */ | |
159 | }; | |
160 | /* These assumes the larger EEPROM. */ | |
161 | enum Win0_EEPROM_cmds { | |
162 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, | |
163 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ | |
164 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ | |
165 | }; | |
166 | ||
167 | /* Register window 1 offsets, the window used in normal operation. | |
168 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. | |
169 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ | |
170 | enum Window1 { | |
171 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, | |
172 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, | |
173 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ | |
174 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, | |
175 | }; | |
176 | ||
177 | enum Window3 { /* Window 3: MAC/config bits. */ | |
178 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, | |
179 | }; | |
b6659824 AV |
180 | enum wn3_config { |
181 | Ram_size = 7, | |
182 | Ram_width = 8, | |
183 | Ram_speed = 0x30, | |
184 | Rom_size = 0xc0, | |
185 | Ram_split_shift = 16, | |
186 | Ram_split = 3 << Ram_split_shift, | |
187 | Xcvr_shift = 20, | |
188 | Xcvr = 7 << Xcvr_shift, | |
189 | Autoselect = 0x1000000, | |
1da177e4 LT |
190 | }; |
191 | ||
192 | enum Window4 { /* Window 4: Xcvr/media bits. */ | |
193 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, | |
194 | }; | |
195 | ||
196 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ | |
197 | ||
198 | struct el3_private { | |
fd238232 | 199 | struct pcmcia_device *p_dev; |
1da177e4 LT |
200 | u16 advertising, partner; /* NWay media advertisement */ |
201 | unsigned char phys; /* MII device address */ | |
202 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ | |
203 | /* for transceiver monitoring */ | |
204 | struct timer_list media; | |
205 | unsigned short media_status; | |
206 | unsigned short fast_poll; | |
207 | unsigned long last_irq; | |
208 | spinlock_t window_lock; /* Guards the Window selection */ | |
209 | }; | |
210 | ||
211 | /* Set iff a MII transceiver on any interface requires mdio preamble. | |
212 | This only set with the original DP83840 on older 3c905 boards, so the extra | |
213 | code size of a per-interface flag is not worthwhile. */ | |
214 | static char mii_preamble_required = 0; | |
215 | ||
216 | /* Index of functions. */ | |
217 | ||
15b99ac1 | 218 | static int tc574_config(struct pcmcia_device *link); |
fba395ee | 219 | static void tc574_release(struct pcmcia_device *link); |
1da177e4 | 220 | |
906da809 OJ |
221 | static void mdio_sync(unsigned int ioaddr, int bits); |
222 | static int mdio_read(unsigned int ioaddr, int phy_id, int location); | |
223 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, | |
224 | int value); | |
225 | static unsigned short read_eeprom(unsigned int ioaddr, int index); | |
1da177e4 LT |
226 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
227 | ||
228 | static void tc574_reset(struct net_device *dev); | |
229 | static void media_check(unsigned long arg); | |
230 | static int el3_open(struct net_device *dev); | |
dbf02fae SH |
231 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
232 | struct net_device *dev); | |
7d12e780 | 233 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
1da177e4 LT |
234 | static void update_stats(struct net_device *dev); |
235 | static struct net_device_stats *el3_get_stats(struct net_device *dev); | |
236 | static int el3_rx(struct net_device *dev, int worklimit); | |
237 | static int el3_close(struct net_device *dev); | |
238 | static void el3_tx_timeout(struct net_device *dev); | |
239 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
7282d491 | 240 | static const struct ethtool_ops netdev_ethtool_ops; |
1da177e4 | 241 | static void set_rx_mode(struct net_device *dev); |
e3eef534 | 242 | static void set_multicast_list(struct net_device *dev); |
1da177e4 | 243 | |
cc3b4866 | 244 | static void tc574_detach(struct pcmcia_device *p_dev); |
1da177e4 | 245 | |
1da177e4 LT |
246 | /* |
247 | tc574_attach() creates an "instance" of the driver, allocating | |
248 | local data structures for one device. The device is registered | |
249 | with Card Services. | |
250 | */ | |
fb72e2ff SH |
251 | static const struct net_device_ops el3_netdev_ops = { |
252 | .ndo_open = el3_open, | |
253 | .ndo_stop = el3_close, | |
254 | .ndo_start_xmit = el3_start_xmit, | |
255 | .ndo_tx_timeout = el3_tx_timeout, | |
256 | .ndo_get_stats = el3_get_stats, | |
257 | .ndo_do_ioctl = el3_ioctl, | |
e3eef534 | 258 | .ndo_set_multicast_list = set_multicast_list, |
fb72e2ff SH |
259 | .ndo_change_mtu = eth_change_mtu, |
260 | .ndo_set_mac_address = eth_mac_addr, | |
261 | .ndo_validate_addr = eth_validate_addr, | |
262 | }; | |
1da177e4 | 263 | |
15b99ac1 | 264 | static int tc574_probe(struct pcmcia_device *link) |
1da177e4 LT |
265 | { |
266 | struct el3_private *lp; | |
1da177e4 | 267 | struct net_device *dev; |
1da177e4 | 268 | |
dd0fab5b | 269 | dev_dbg(&link->dev, "3c574_attach()\n"); |
1da177e4 LT |
270 | |
271 | /* Create the PC card device object. */ | |
272 | dev = alloc_etherdev(sizeof(struct el3_private)); | |
273 | if (!dev) | |
f8cfa618 | 274 | return -ENOMEM; |
1da177e4 | 275 | lp = netdev_priv(dev); |
1da177e4 | 276 | link->priv = dev; |
fba395ee | 277 | lp->p_dev = link; |
1da177e4 LT |
278 | |
279 | spin_lock_init(&lp->window_lock); | |
90abdc3b DB |
280 | link->resource[0]->end = 32; |
281 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; | |
1ac71e5a | 282 | link->config_flags |= CONF_ENABLE_IRQ; |
7feabb64 | 283 | link->config_index = 1; |
1da177e4 | 284 | |
fb72e2ff | 285 | dev->netdev_ops = &el3_netdev_ops; |
1da177e4 | 286 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
1da177e4 | 287 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 288 | |
15b99ac1 | 289 | return tc574_config(link); |
1da177e4 LT |
290 | } /* tc574_attach */ |
291 | ||
292 | /* | |
293 | ||
294 | This deletes a driver "instance". The device is de-registered | |
295 | with Card Services. If it has been released, all local data | |
296 | structures are freed. Otherwise, the structures will be freed | |
297 | when the device is released. | |
298 | ||
299 | */ | |
300 | ||
fba395ee | 301 | static void tc574_detach(struct pcmcia_device *link) |
1da177e4 LT |
302 | { |
303 | struct net_device *dev = link->priv; | |
1da177e4 | 304 | |
dd0fab5b | 305 | dev_dbg(&link->dev, "3c574_detach()\n"); |
1da177e4 | 306 | |
c7c2fa07 | 307 | unregister_netdev(dev); |
1da177e4 | 308 | |
e2d40963 | 309 | tc574_release(link); |
1da177e4 | 310 | |
1da177e4 LT |
311 | free_netdev(dev); |
312 | } /* tc574_detach */ | |
313 | ||
314 | /* | |
315 | tc574_config() is scheduled to run after a CARD_INSERTION event | |
316 | is received, to configure the PCMCIA socket, and to make the | |
317 | ethernet device available to the system. | |
318 | */ | |
319 | ||
f71e1309 | 320 | static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; |
1da177e4 | 321 | |
15b99ac1 | 322 | static int tc574_config(struct pcmcia_device *link) |
1da177e4 | 323 | { |
1da177e4 LT |
324 | struct net_device *dev = link->priv; |
325 | struct el3_private *lp = netdev_priv(dev); | |
dd0fab5b | 326 | int ret, i, j; |
906da809 | 327 | unsigned int ioaddr; |
b1e247ad | 328 | __be16 *phys_addr; |
1da177e4 | 329 | char *cardname; |
b6659824 | 330 | __u32 config; |
dddfbd82 DB |
331 | u8 *buf; |
332 | size_t len; | |
1da177e4 | 333 | |
b1e247ad | 334 | phys_addr = (__be16 *)dev->dev_addr; |
1da177e4 | 335 | |
dd0fab5b | 336 | dev_dbg(&link->dev, "3c574_config()\n"); |
1da177e4 | 337 | |
90abdc3b DB |
338 | link->io_lines = 16; |
339 | ||
1da177e4 | 340 | for (i = j = 0; j < 0x400; j += 0x20) { |
90abdc3b DB |
341 | link->resource[0]->start = j ^ 0x300; |
342 | i = pcmcia_request_io(link); | |
4c89e88b DB |
343 | if (i == 0) |
344 | break; | |
1da177e4 | 345 | } |
dd0fab5b DB |
346 | if (i != 0) |
347 | goto failed; | |
348 | ||
eb14120f | 349 | ret = pcmcia_request_irq(link, el3_interrupt); |
dd0fab5b DB |
350 | if (ret) |
351 | goto failed; | |
352 | ||
1ac71e5a | 353 | ret = pcmcia_enable_device(link); |
dd0fab5b | 354 | if (ret) |
1da177e4 | 355 | goto failed; |
1da177e4 | 356 | |
eb14120f | 357 | dev->irq = link->irq; |
9a017a91 | 358 | dev->base_addr = link->resource[0]->start; |
1da177e4 LT |
359 | |
360 | ioaddr = dev->base_addr; | |
361 | ||
362 | /* The 3c574 normally uses an EEPROM for configuration info, including | |
363 | the hardware address. The future products may include a modem chip | |
364 | and put the address in the CIS. */ | |
dddfbd82 DB |
365 | |
366 | len = pcmcia_get_tuple(link, 0x88, &buf); | |
367 | if (buf && len >= 6) { | |
1da177e4 | 368 | for (i = 0; i < 3; i++) |
dddfbd82 DB |
369 | phys_addr[i] = htons(le16_to_cpu(buf[i * 2])); |
370 | kfree(buf); | |
1da177e4 | 371 | } else { |
dddfbd82 | 372 | kfree(buf); /* 0 < len < 6 */ |
1da177e4 LT |
373 | EL3WINDOW(0); |
374 | for (i = 0; i < 3; i++) | |
375 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); | |
b1e247ad | 376 | if (phys_addr[0] == htons(0x6060)) { |
1da177e4 LT |
377 | printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx" |
378 | "-0x%03lx\n", dev->base_addr, dev->base_addr+15); | |
379 | goto failed; | |
380 | } | |
381 | } | |
a9606fd3 DB |
382 | if (link->prod_id[1]) |
383 | cardname = link->prod_id[1]; | |
384 | else | |
1da177e4 LT |
385 | cardname = "3Com 3c574"; |
386 | ||
387 | { | |
388 | u_char mcr; | |
389 | outw(2<<11, ioaddr + RunnerRdCtrl); | |
390 | mcr = inb(ioaddr + 2); | |
391 | outw(0<<11, ioaddr + RunnerRdCtrl); | |
392 | printk(KERN_INFO " ASIC rev %d,", mcr>>3); | |
393 | EL3WINDOW(3); | |
b6659824 AV |
394 | config = inl(ioaddr + Wn3_Config); |
395 | lp->default_media = (config & Xcvr) >> Xcvr_shift; | |
396 | lp->autoselect = config & Autoselect ? 1 : 0; | |
1da177e4 LT |
397 | } |
398 | ||
399 | init_timer(&lp->media); | |
400 | ||
401 | { | |
402 | int phy; | |
403 | ||
404 | /* Roadrunner only: Turn on the MII transceiver */ | |
405 | outw(0x8040, ioaddr + Wn3_Options); | |
406 | mdelay(1); | |
407 | outw(0xc040, ioaddr + Wn3_Options); | |
408 | tc574_wait_for_completion(dev, TxReset); | |
409 | tc574_wait_for_completion(dev, RxReset); | |
410 | mdelay(1); | |
411 | outw(0x8040, ioaddr + Wn3_Options); | |
412 | ||
413 | EL3WINDOW(4); | |
414 | for (phy = 1; phy <= 32; phy++) { | |
415 | int mii_status; | |
416 | mdio_sync(ioaddr, 32); | |
417 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); | |
418 | if (mii_status != 0xffff) { | |
419 | lp->phys = phy & 0x1f; | |
dd0fab5b DB |
420 | dev_dbg(&link->dev, " MII transceiver at " |
421 | "index %d, status %x.\n", | |
1da177e4 LT |
422 | phy, mii_status); |
423 | if ((mii_status & 0x0040) == 0) | |
424 | mii_preamble_required = 1; | |
425 | break; | |
426 | } | |
427 | } | |
428 | if (phy > 32) { | |
429 | printk(KERN_NOTICE " No MII transceivers found!\n"); | |
430 | goto failed; | |
431 | } | |
432 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; | |
433 | mdio_write(ioaddr, lp->phys, 16, i); | |
434 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); | |
435 | if (full_duplex) { | |
436 | /* Only advertise the FD media types. */ | |
437 | lp->advertising &= ~0x02a0; | |
438 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
439 | } | |
440 | } | |
441 | ||
dd2e5a15 | 442 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
443 | |
444 | if (register_netdev(dev) != 0) { | |
445 | printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n"); | |
1da177e4 LT |
446 | goto failed; |
447 | } | |
448 | ||
0795af57 | 449 | printk(KERN_INFO "%s: %s at io %#3lx, irq %d, " |
e174961c | 450 | "hw_addr %pM.\n", |
0795af57 | 451 | dev->name, cardname, dev->base_addr, dev->irq, |
e174961c | 452 | dev->dev_addr); |
1da177e4 | 453 | printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n", |
b6659824 AV |
454 | 8 << config & Ram_size, |
455 | ram_split[(config & Ram_split) >> Ram_split_shift], | |
456 | config & Autoselect ? "autoselect " : ""); | |
1da177e4 | 457 | |
15b99ac1 | 458 | return 0; |
1da177e4 | 459 | |
1da177e4 LT |
460 | failed: |
461 | tc574_release(link); | |
15b99ac1 | 462 | return -ENODEV; |
1da177e4 LT |
463 | |
464 | } /* tc574_config */ | |
465 | ||
466 | /* | |
467 | After a card is removed, tc574_release() will unregister the net | |
468 | device, and release the PCMCIA configuration. If the device is | |
469 | still open, this will be postponed until it is closed. | |
470 | */ | |
471 | ||
fba395ee | 472 | static void tc574_release(struct pcmcia_device *link) |
1da177e4 | 473 | { |
fba395ee | 474 | pcmcia_disable_device(link); |
1da177e4 LT |
475 | } |
476 | ||
fba395ee | 477 | static int tc574_suspend(struct pcmcia_device *link) |
98e4c28b | 478 | { |
98e4c28b DB |
479 | struct net_device *dev = link->priv; |
480 | ||
e2d40963 | 481 | if (link->open) |
8661bb5b | 482 | netif_device_detach(dev); |
98e4c28b DB |
483 | |
484 | return 0; | |
485 | } | |
486 | ||
fba395ee | 487 | static int tc574_resume(struct pcmcia_device *link) |
98e4c28b | 488 | { |
98e4c28b DB |
489 | struct net_device *dev = link->priv; |
490 | ||
e2d40963 | 491 | if (link->open) { |
8661bb5b DB |
492 | tc574_reset(dev); |
493 | netif_device_attach(dev); | |
98e4c28b DB |
494 | } |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
1da177e4 LT |
499 | static void dump_status(struct net_device *dev) |
500 | { | |
906da809 | 501 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
502 | EL3WINDOW(1); |
503 | printk(KERN_INFO " irq status %04x, rx status %04x, tx status " | |
504 | "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS), | |
505 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), | |
506 | inw(ioaddr+TxFree)); | |
507 | EL3WINDOW(4); | |
508 | printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x" | |
509 | " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06), | |
510 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); | |
511 | EL3WINDOW(1); | |
512 | } | |
513 | ||
514 | /* | |
515 | Use this for commands that may take time to finish | |
516 | */ | |
517 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) | |
518 | { | |
519 | int i = 1500; | |
520 | outw(cmd, dev->base_addr + EL3_CMD); | |
521 | while (--i > 0) | |
522 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; | |
523 | if (i == 0) | |
524 | printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd); | |
525 | } | |
526 | ||
527 | /* Read a word from the EEPROM using the regular EEPROM access register. | |
528 | Assume that we are in register window zero. | |
529 | */ | |
906da809 | 530 | static unsigned short read_eeprom(unsigned int ioaddr, int index) |
1da177e4 LT |
531 | { |
532 | int timer; | |
533 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); | |
534 | /* Pause for at least 162 usec for the read to take place. */ | |
535 | for (timer = 1620; timer >= 0; timer--) { | |
536 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) | |
537 | break; | |
538 | } | |
539 | return inw(ioaddr + Wn0EepromData); | |
540 | } | |
541 | ||
542 | /* MII transceiver control section. | |
543 | Read and write the MII registers using software-generated serial | |
544 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
545 | for details. | |
546 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the | |
547 | slow PC card interface. */ | |
548 | ||
549 | #define MDIO_SHIFT_CLK 0x01 | |
550 | #define MDIO_DIR_WRITE 0x04 | |
551 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) | |
552 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) | |
553 | #define MDIO_DATA_READ 0x02 | |
554 | #define MDIO_ENB_IN 0x00 | |
555 | ||
556 | /* Generate the preamble required for initial synchronization and | |
557 | a few older transceivers. */ | |
906da809 | 558 | static void mdio_sync(unsigned int ioaddr, int bits) |
1da177e4 | 559 | { |
906da809 | 560 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
561 | |
562 | /* Establish sync by sending at least 32 logic ones. */ | |
563 | while (-- bits >= 0) { | |
564 | outw(MDIO_DATA_WRITE1, mdio_addr); | |
565 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); | |
566 | } | |
567 | } | |
568 | ||
906da809 | 569 | static int mdio_read(unsigned int ioaddr, int phy_id, int location) |
1da177e4 LT |
570 | { |
571 | int i; | |
572 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
573 | unsigned int retval = 0; | |
906da809 | 574 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
575 | |
576 | if (mii_preamble_required) | |
577 | mdio_sync(ioaddr, 32); | |
578 | ||
579 | /* Shift the read command bits out. */ | |
580 | for (i = 14; i >= 0; i--) { | |
581 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
582 | outw(dataval, mdio_addr); | |
583 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
584 | } | |
585 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
586 | for (i = 19; i > 0; i--) { | |
587 | outw(MDIO_ENB_IN, mdio_addr); | |
588 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); | |
589 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
590 | } | |
591 | return (retval>>1) & 0xffff; | |
592 | } | |
593 | ||
906da809 | 594 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value) |
1da177e4 LT |
595 | { |
596 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; | |
906da809 | 597 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
598 | int i; |
599 | ||
600 | if (mii_preamble_required) | |
601 | mdio_sync(ioaddr, 32); | |
602 | ||
603 | /* Shift the command bits out. */ | |
604 | for (i = 31; i >= 0; i--) { | |
605 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
606 | outw(dataval, mdio_addr); | |
607 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
608 | } | |
609 | /* Leave the interface idle. */ | |
610 | for (i = 1; i >= 0; i--) { | |
611 | outw(MDIO_ENB_IN, mdio_addr); | |
612 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
613 | } | |
1da177e4 LT |
614 | } |
615 | ||
616 | /* Reset and restore all of the 3c574 registers. */ | |
617 | static void tc574_reset(struct net_device *dev) | |
618 | { | |
619 | struct el3_private *lp = netdev_priv(dev); | |
620 | int i; | |
906da809 | 621 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
622 | unsigned long flags; |
623 | ||
624 | tc574_wait_for_completion(dev, TotalReset|0x10); | |
625 | ||
626 | spin_lock_irqsave(&lp->window_lock, flags); | |
627 | /* Clear any transactions in progress. */ | |
628 | outw(0, ioaddr + RunnerWrCtrl); | |
629 | outw(0, ioaddr + RunnerRdCtrl); | |
630 | ||
631 | /* Set the station address and mask. */ | |
632 | EL3WINDOW(2); | |
633 | for (i = 0; i < 6; i++) | |
634 | outb(dev->dev_addr[i], ioaddr + i); | |
635 | for (; i < 12; i+=2) | |
636 | outw(0, ioaddr + i); | |
637 | ||
638 | /* Reset config options */ | |
639 | EL3WINDOW(3); | |
640 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
641 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, | |
642 | ioaddr + Wn3_Config); | |
643 | /* Roadrunner only: Turn on the MII transceiver. */ | |
644 | outw(0x8040, ioaddr + Wn3_Options); | |
645 | mdelay(1); | |
646 | outw(0xc040, ioaddr + Wn3_Options); | |
647 | EL3WINDOW(1); | |
648 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
649 | ||
650 | tc574_wait_for_completion(dev, TxReset); | |
651 | tc574_wait_for_completion(dev, RxReset); | |
652 | mdelay(1); | |
653 | spin_lock_irqsave(&lp->window_lock, flags); | |
654 | EL3WINDOW(3); | |
655 | outw(0x8040, ioaddr + Wn3_Options); | |
656 | ||
657 | /* Switch to the stats window, and clear all stats by reading. */ | |
658 | outw(StatsDisable, ioaddr + EL3_CMD); | |
659 | EL3WINDOW(6); | |
660 | for (i = 0; i < 10; i++) | |
661 | inb(ioaddr + i); | |
662 | inw(ioaddr + 10); | |
663 | inw(ioaddr + 12); | |
664 | EL3WINDOW(4); | |
665 | inb(ioaddr + 12); | |
666 | inb(ioaddr + 13); | |
667 | ||
668 | /* .. enable any extra statistics bits.. */ | |
669 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
670 | ||
671 | EL3WINDOW(1); | |
672 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
673 | ||
674 | /* .. re-sync MII and re-fill what NWay is advertising. */ | |
675 | mdio_sync(ioaddr, 32); | |
676 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
677 | if (!auto_polarity) { | |
678 | /* works for TDK 78Q2120 series MII's */ | |
1569d9e8 | 679 | i = mdio_read(ioaddr, lp->phys, 16) | 0x20; |
1da177e4 LT |
680 | mdio_write(ioaddr, lp->phys, 16, i); |
681 | } | |
682 | ||
683 | spin_lock_irqsave(&lp->window_lock, flags); | |
684 | /* Switch to register set 1 for normal use, just for TxFree. */ | |
685 | set_rx_mode(dev); | |
686 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
687 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
688 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
689 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
690 | /* Allow status bits to be seen. */ | |
691 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); | |
692 | /* Ack all pending events, and set active indicator mask. */ | |
693 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
694 | ioaddr + EL3_CMD); | |
695 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
696 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); | |
697 | } | |
698 | ||
699 | static int el3_open(struct net_device *dev) | |
700 | { | |
701 | struct el3_private *lp = netdev_priv(dev); | |
fba395ee | 702 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 703 | |
9940ec36 | 704 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
705 | return -ENODEV; |
706 | ||
707 | link->open++; | |
708 | netif_start_queue(dev); | |
709 | ||
710 | tc574_reset(dev); | |
711 | lp->media.function = &media_check; | |
712 | lp->media.data = (unsigned long) dev; | |
713 | lp->media.expires = jiffies + HZ; | |
714 | add_timer(&lp->media); | |
715 | ||
dd0fab5b | 716 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
1da177e4 LT |
717 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | static void el3_tx_timeout(struct net_device *dev) | |
723 | { | |
906da809 | 724 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
725 | |
726 | printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name); | |
727 | dump_status(dev); | |
2e8d31d5 | 728 | dev->stats.tx_errors++; |
1ae5dc34 | 729 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
730 | /* Issue TX_RESET and TX_START commands. */ |
731 | tc574_wait_for_completion(dev, TxReset); | |
732 | outw(TxEnable, ioaddr + EL3_CMD); | |
733 | netif_wake_queue(dev); | |
734 | } | |
735 | ||
736 | static void pop_tx_status(struct net_device *dev) | |
737 | { | |
906da809 | 738 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
739 | int i; |
740 | ||
741 | /* Clear the Tx status stack. */ | |
742 | for (i = 32; i > 0; i--) { | |
743 | u_char tx_status = inb(ioaddr + TxStatus); | |
744 | if (!(tx_status & 0x84)) | |
745 | break; | |
746 | /* reset transmitter on jabber error or underrun */ | |
747 | if (tx_status & 0x30) | |
748 | tc574_wait_for_completion(dev, TxReset); | |
749 | if (tx_status & 0x38) { | |
dd0fab5b | 750 | pr_debug("%s: transmit error: status 0x%02x\n", |
1da177e4 LT |
751 | dev->name, tx_status); |
752 | outw(TxEnable, ioaddr + EL3_CMD); | |
2e8d31d5 | 753 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
754 | } |
755 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
756 | } | |
757 | } | |
758 | ||
dbf02fae SH |
759 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
760 | struct net_device *dev) | |
1da177e4 | 761 | { |
906da809 | 762 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
763 | struct el3_private *lp = netdev_priv(dev); |
764 | unsigned long flags; | |
765 | ||
dd0fab5b | 766 | pr_debug("%s: el3_start_xmit(length = %ld) called, " |
1da177e4 LT |
767 | "status %4.4x.\n", dev->name, (long)skb->len, |
768 | inw(ioaddr + EL3_STATUS)); | |
769 | ||
770 | spin_lock_irqsave(&lp->window_lock, flags); | |
df245dce AK |
771 | |
772 | dev->stats.tx_bytes += skb->len; | |
773 | ||
774 | /* Put out the doubleword header... */ | |
1da177e4 LT |
775 | outw(skb->len, ioaddr + TX_FIFO); |
776 | outw(0, ioaddr + TX_FIFO); | |
df245dce | 777 | /* ... and the packet rounded to a doubleword. */ |
1da177e4 LT |
778 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); |
779 | ||
1da177e4 LT |
780 | /* TxFree appears only in Window 1, not offset 0x1c. */ |
781 | if (inw(ioaddr + TxFree) <= 1536) { | |
782 | netif_stop_queue(dev); | |
783 | /* Interrupt us when the FIFO has room for max-sized packet. | |
784 | The threshold is in units of dwords. */ | |
785 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); | |
786 | } | |
787 | ||
788 | pop_tx_status(dev); | |
789 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
790 | dev_kfree_skb(skb); | |
6ed10654 | 791 | return NETDEV_TX_OK; |
1da177e4 LT |
792 | } |
793 | ||
794 | /* The EL3 interrupt handler. */ | |
7d12e780 | 795 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
1da177e4 LT |
796 | { |
797 | struct net_device *dev = (struct net_device *) dev_id; | |
798 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 799 | unsigned int ioaddr; |
1da177e4 LT |
800 | unsigned status; |
801 | int work_budget = max_interrupt_work; | |
802 | int handled = 0; | |
803 | ||
804 | if (!netif_device_present(dev)) | |
805 | return IRQ_NONE; | |
806 | ioaddr = dev->base_addr; | |
807 | ||
dd0fab5b | 808 | pr_debug("%s: interrupt, status %4.4x.\n", |
1da177e4 LT |
809 | dev->name, inw(ioaddr + EL3_STATUS)); |
810 | ||
811 | spin_lock(&lp->window_lock); | |
812 | ||
813 | while ((status = inw(ioaddr + EL3_STATUS)) & | |
814 | (IntLatch | RxComplete | RxEarly | StatsFull)) { | |
815 | if (!netif_device_present(dev) || | |
816 | ((status & 0xe000) != 0x2000)) { | |
dd0fab5b | 817 | pr_debug("%s: Interrupt from dead card\n", dev->name); |
1da177e4 LT |
818 | break; |
819 | } | |
820 | ||
821 | handled = 1; | |
822 | ||
823 | if (status & RxComplete) | |
824 | work_budget = el3_rx(dev, work_budget); | |
825 | ||
826 | if (status & TxAvailable) { | |
dd0fab5b | 827 | pr_debug(" TX room bit was handled.\n"); |
1da177e4 LT |
828 | /* There's room in the FIFO for a full-sized packet. */ |
829 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
830 | netif_wake_queue(dev); | |
831 | } | |
832 | ||
833 | if (status & TxComplete) | |
834 | pop_tx_status(dev); | |
835 | ||
836 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
837 | /* Handle all uncommon interrupts. */ | |
838 | if (status & StatsFull) | |
839 | update_stats(dev); | |
840 | if (status & RxEarly) { | |
841 | work_budget = el3_rx(dev, work_budget); | |
842 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
843 | } | |
844 | if (status & AdapterFailure) { | |
845 | u16 fifo_diag; | |
846 | EL3WINDOW(4); | |
847 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); | |
848 | EL3WINDOW(1); | |
849 | printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic" | |
850 | " register %04x.\n", dev->name, fifo_diag); | |
851 | if (fifo_diag & 0x0400) { | |
852 | /* Tx overrun */ | |
853 | tc574_wait_for_completion(dev, TxReset); | |
854 | outw(TxEnable, ioaddr + EL3_CMD); | |
855 | } | |
856 | if (fifo_diag & 0x2000) { | |
857 | /* Rx underrun */ | |
858 | tc574_wait_for_completion(dev, RxReset); | |
859 | set_rx_mode(dev); | |
860 | outw(RxEnable, ioaddr + EL3_CMD); | |
861 | } | |
862 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); | |
863 | } | |
864 | } | |
865 | ||
866 | if (--work_budget < 0) { | |
dd0fab5b | 867 | pr_debug("%s: Too much work in interrupt, " |
1da177e4 LT |
868 | "status %4.4x.\n", dev->name, status); |
869 | /* Clear all interrupts */ | |
870 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); | |
871 | break; | |
872 | } | |
873 | /* Acknowledge the IRQ. */ | |
874 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
875 | } | |
876 | ||
dd0fab5b | 877 | pr_debug("%s: exiting interrupt, status %4.4x.\n", |
1da177e4 LT |
878 | dev->name, inw(ioaddr + EL3_STATUS)); |
879 | ||
880 | spin_unlock(&lp->window_lock); | |
881 | return IRQ_RETVAL(handled); | |
882 | } | |
883 | ||
884 | /* | |
885 | This timer serves two purposes: to check for missed interrupts | |
886 | (and as a last resort, poll the NIC for events), and to monitor | |
887 | the MII, reporting changes in cable status. | |
888 | */ | |
889 | static void media_check(unsigned long arg) | |
890 | { | |
891 | struct net_device *dev = (struct net_device *) arg; | |
892 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 893 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
894 | unsigned long flags; |
895 | unsigned short /* cable, */ media, partner; | |
896 | ||
897 | if (!netif_device_present(dev)) | |
898 | goto reschedule; | |
899 | ||
900 | /* Check for pending interrupt with expired latency timer: with | |
901 | this, we can limp along even if the interrupt is blocked */ | |
902 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { | |
903 | if (!lp->fast_poll) | |
904 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); | |
671c8806 KK |
905 | |
906 | local_irq_save(flags); | |
e363d138 | 907 | el3_interrupt(dev->irq, dev); |
671c8806 KK |
908 | local_irq_restore(flags); |
909 | ||
1da177e4 LT |
910 | lp->fast_poll = HZ; |
911 | } | |
912 | if (lp->fast_poll) { | |
913 | lp->fast_poll--; | |
914 | lp->media.expires = jiffies + 2*HZ/100; | |
915 | add_timer(&lp->media); | |
916 | return; | |
917 | } | |
918 | ||
919 | spin_lock_irqsave(&lp->window_lock, flags); | |
920 | EL3WINDOW(4); | |
921 | media = mdio_read(ioaddr, lp->phys, 1); | |
922 | partner = mdio_read(ioaddr, lp->phys, 5); | |
923 | EL3WINDOW(1); | |
924 | ||
925 | if (media != lp->media_status) { | |
926 | if ((media ^ lp->media_status) & 0x0004) | |
927 | printk(KERN_INFO "%s: %s link beat\n", dev->name, | |
928 | (lp->media_status & 0x0004) ? "lost" : "found"); | |
929 | if ((media ^ lp->media_status) & 0x0020) { | |
930 | lp->partner = 0; | |
931 | if (lp->media_status & 0x0020) { | |
932 | printk(KERN_INFO "%s: autonegotiation restarted\n", | |
933 | dev->name); | |
934 | } else if (partner) { | |
935 | partner &= lp->advertising; | |
936 | lp->partner = partner; | |
937 | printk(KERN_INFO "%s: autonegotiation complete: " | |
938 | "%sbaseT-%cD selected\n", dev->name, | |
939 | ((partner & 0x0180) ? "100" : "10"), | |
940 | ((partner & 0x0140) ? 'F' : 'H')); | |
941 | } else { | |
942 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", | |
943 | dev->name); | |
944 | } | |
945 | ||
946 | EL3WINDOW(3); | |
947 | outb((partner & 0x0140 ? 0x20 : 0) | | |
948 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
949 | EL3WINDOW(1); | |
950 | ||
951 | } | |
952 | if (media & 0x0010) | |
953 | printk(KERN_INFO "%s: remote fault detected\n", | |
954 | dev->name); | |
955 | if (media & 0x0002) | |
956 | printk(KERN_INFO "%s: jabber detected\n", dev->name); | |
957 | lp->media_status = media; | |
958 | } | |
959 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
960 | ||
961 | reschedule: | |
962 | lp->media.expires = jiffies + HZ; | |
963 | add_timer(&lp->media); | |
964 | } | |
965 | ||
966 | static struct net_device_stats *el3_get_stats(struct net_device *dev) | |
967 | { | |
968 | struct el3_private *lp = netdev_priv(dev); | |
969 | ||
970 | if (netif_device_present(dev)) { | |
971 | unsigned long flags; | |
972 | spin_lock_irqsave(&lp->window_lock, flags); | |
973 | update_stats(dev); | |
974 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
975 | } | |
2e8d31d5 | 976 | return &dev->stats; |
1da177e4 LT |
977 | } |
978 | ||
979 | /* Update statistics. | |
980 | Suprisingly this need not be run single-threaded, but it effectively is. | |
981 | The counters clear when read, so the adds must merely be atomic. | |
982 | */ | |
983 | static void update_stats(struct net_device *dev) | |
984 | { | |
906da809 | 985 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
986 | u8 rx, tx, up; |
987 | ||
dd0fab5b | 988 | pr_debug("%s: updating the statistics.\n", dev->name); |
1da177e4 LT |
989 | |
990 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ | |
991 | return; | |
992 | ||
993 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ | |
994 | /* Switch to the stats window, and read everything. */ | |
995 | EL3WINDOW(6); | |
2e8d31d5 PZ |
996 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
997 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1da177e4 | 998 | /* Multiple collisions. */ inb(ioaddr + 2); |
2e8d31d5 PZ |
999 | dev->stats.collisions += inb(ioaddr + 3); |
1000 | dev->stats.tx_window_errors += inb(ioaddr + 4); | |
1001 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); | |
1002 | dev->stats.tx_packets += inb(ioaddr + 6); | |
1da177e4 | 1003 | up = inb(ioaddr + 9); |
2e8d31d5 | 1004 | dev->stats.tx_packets += (up&0x30) << 4; |
1da177e4 LT |
1005 | /* Rx packets */ inb(ioaddr + 7); |
1006 | /* Tx deferrals */ inb(ioaddr + 8); | |
1007 | rx = inw(ioaddr + 10); | |
1008 | tx = inw(ioaddr + 12); | |
1009 | ||
1010 | EL3WINDOW(4); | |
1011 | /* BadSSD */ inb(ioaddr + 12); | |
1012 | up = inb(ioaddr + 13); | |
1013 | ||
1da177e4 LT |
1014 | EL3WINDOW(1); |
1015 | } | |
1016 | ||
1017 | static int el3_rx(struct net_device *dev, int worklimit) | |
1018 | { | |
906da809 | 1019 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
1020 | short rx_status; |
1021 | ||
dd0fab5b | 1022 | pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
1da177e4 LT |
1023 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
1024 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && | |
b9bdcd9b RK |
1025 | worklimit > 0) { |
1026 | worklimit--; | |
1da177e4 LT |
1027 | if (rx_status & 0x4000) { /* Error, update stats. */ |
1028 | short error = rx_status & 0x3800; | |
2e8d31d5 | 1029 | dev->stats.rx_errors++; |
1da177e4 | 1030 | switch (error) { |
2e8d31d5 PZ |
1031 | case 0x0000: dev->stats.rx_over_errors++; break; |
1032 | case 0x0800: dev->stats.rx_length_errors++; break; | |
1033 | case 0x1000: dev->stats.rx_frame_errors++; break; | |
1034 | case 0x1800: dev->stats.rx_length_errors++; break; | |
1035 | case 0x2000: dev->stats.rx_frame_errors++; break; | |
1036 | case 0x2800: dev->stats.rx_crc_errors++; break; | |
1da177e4 LT |
1037 | } |
1038 | } else { | |
1039 | short pkt_len = rx_status & 0x7ff; | |
1040 | struct sk_buff *skb; | |
1041 | ||
1042 | skb = dev_alloc_skb(pkt_len+5); | |
1043 | ||
dd0fab5b | 1044 | pr_debug(" Receiving packet size %d status %4.4x.\n", |
1da177e4 LT |
1045 | pkt_len, rx_status); |
1046 | if (skb != NULL) { | |
1da177e4 LT |
1047 | skb_reserve(skb, 2); |
1048 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), | |
1049 | ((pkt_len+3)>>2)); | |
1050 | skb->protocol = eth_type_trans(skb, dev); | |
1051 | netif_rx(skb); | |
2e8d31d5 PZ |
1052 | dev->stats.rx_packets++; |
1053 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1054 | } else { |
dd0fab5b | 1055 | pr_debug("%s: couldn't allocate a sk_buff of" |
1da177e4 | 1056 | " size %d.\n", dev->name, pkt_len); |
2e8d31d5 | 1057 | dev->stats.rx_dropped++; |
1da177e4 LT |
1058 | } |
1059 | } | |
1060 | tc574_wait_for_completion(dev, RxDiscard); | |
1061 | } | |
1062 | ||
1063 | return worklimit; | |
1064 | } | |
1065 | ||
1066 | static void netdev_get_drvinfo(struct net_device *dev, | |
1067 | struct ethtool_drvinfo *info) | |
1068 | { | |
1069 | strcpy(info->driver, "3c574_cs"); | |
1070 | } | |
1071 | ||
7282d491 | 1072 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
1073 | .get_drvinfo = netdev_get_drvinfo, |
1074 | }; | |
1075 | ||
1076 | /* Provide ioctl() calls to examine the MII xcvr state. */ | |
1077 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1078 | { | |
1079 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 1080 | unsigned int ioaddr = dev->base_addr; |
0fa0ee05 | 1081 | struct mii_ioctl_data *data = if_mii(rq); |
1da177e4 LT |
1082 | int phy = lp->phys & 0x1f; |
1083 | ||
dd0fab5b | 1084 | pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", |
1da177e4 | 1085 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
0fa0ee05 | 1086 | data->phy_id, data->reg_num, data->val_in, data->val_out); |
1da177e4 LT |
1087 | |
1088 | switch(cmd) { | |
1089 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ | |
0fa0ee05 | 1090 | data->phy_id = phy; |
1da177e4 LT |
1091 | case SIOCGMIIREG: /* Read the specified MII register. */ |
1092 | { | |
1093 | int saved_window; | |
1094 | unsigned long flags; | |
1095 | ||
1096 | spin_lock_irqsave(&lp->window_lock, flags); | |
1097 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1098 | EL3WINDOW(4); | |
0fa0ee05 BH |
1099 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, |
1100 | data->reg_num & 0x1f); | |
1da177e4 LT |
1101 | EL3WINDOW(saved_window); |
1102 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1103 | return 0; | |
1104 | } | |
1105 | case SIOCSMIIREG: /* Write the specified MII register */ | |
1106 | { | |
1107 | int saved_window; | |
1108 | unsigned long flags; | |
1109 | ||
1da177e4 LT |
1110 | spin_lock_irqsave(&lp->window_lock, flags); |
1111 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1112 | EL3WINDOW(4); | |
0fa0ee05 BH |
1113 | mdio_write(ioaddr, data->phy_id & 0x1f, |
1114 | data->reg_num & 0x1f, data->val_in); | |
1da177e4 LT |
1115 | EL3WINDOW(saved_window); |
1116 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1117 | return 0; | |
1118 | } | |
1119 | default: | |
1120 | return -EOPNOTSUPP; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not | |
1125 | documented. Until it is we revert to receiving all multicast frames when | |
1126 | any multicast reception is desired. | |
1127 | Note: My other drivers emit a log message whenever promiscuous mode is | |
1128 | entered to help detect password sniffers. This is less desirable on | |
1129 | typical PC card machines, so we omit the message. | |
1130 | */ | |
1131 | ||
1132 | static void set_rx_mode(struct net_device *dev) | |
1133 | { | |
906da809 | 1134 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
1135 | |
1136 | if (dev->flags & IFF_PROMISC) | |
1137 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, | |
1138 | ioaddr + EL3_CMD); | |
4cd24eaf | 1139 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
1da177e4 LT |
1140 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); |
1141 | else | |
1142 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); | |
1143 | } | |
1144 | ||
e3eef534 KK |
1145 | static void set_multicast_list(struct net_device *dev) |
1146 | { | |
1147 | struct el3_private *lp = netdev_priv(dev); | |
1148 | unsigned long flags; | |
1149 | ||
1150 | spin_lock_irqsave(&lp->window_lock, flags); | |
1151 | set_rx_mode(dev); | |
1152 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1153 | } | |
1154 | ||
1da177e4 LT |
1155 | static int el3_close(struct net_device *dev) |
1156 | { | |
906da809 | 1157 | unsigned int ioaddr = dev->base_addr; |
1da177e4 | 1158 | struct el3_private *lp = netdev_priv(dev); |
fba395ee | 1159 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 1160 | |
dd0fab5b | 1161 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); |
1da177e4 | 1162 | |
9940ec36 | 1163 | if (pcmcia_dev_present(link)) { |
1da177e4 LT |
1164 | unsigned long flags; |
1165 | ||
1166 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1167 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1168 | ||
1169 | /* Disable the receiver and transmitter. */ | |
1170 | outw(RxDisable, ioaddr + EL3_CMD); | |
1171 | outw(TxDisable, ioaddr + EL3_CMD); | |
1172 | ||
1173 | /* Note: Switching to window 0 may disable the IRQ. */ | |
1174 | EL3WINDOW(0); | |
1175 | spin_lock_irqsave(&lp->window_lock, flags); | |
1176 | update_stats(dev); | |
1177 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
b9a6eaff DR |
1178 | |
1179 | /* force interrupts off */ | |
1180 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); | |
1da177e4 LT |
1181 | } |
1182 | ||
1183 | link->open--; | |
1184 | netif_stop_queue(dev); | |
1185 | del_timer_sync(&lp->media); | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
270b6e94 DB |
1190 | static struct pcmcia_device_id tc574_ids[] = { |
1191 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), | |
f0a3a153 | 1192 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"), |
270b6e94 DB |
1193 | PCMCIA_DEVICE_NULL, |
1194 | }; | |
1195 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); | |
1196 | ||
1da177e4 LT |
1197 | static struct pcmcia_driver tc574_driver = { |
1198 | .owner = THIS_MODULE, | |
1199 | .drv = { | |
1200 | .name = "3c574_cs", | |
1201 | }, | |
15b99ac1 | 1202 | .probe = tc574_probe, |
cc3b4866 | 1203 | .remove = tc574_detach, |
270b6e94 | 1204 | .id_table = tc574_ids, |
98e4c28b DB |
1205 | .suspend = tc574_suspend, |
1206 | .resume = tc574_resume, | |
1da177e4 LT |
1207 | }; |
1208 | ||
1209 | static int __init init_tc574(void) | |
1210 | { | |
1211 | return pcmcia_register_driver(&tc574_driver); | |
1212 | } | |
1213 | ||
1214 | static void __exit exit_tc574(void) | |
1215 | { | |
1216 | pcmcia_unregister_driver(&tc574_driver); | |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | module_init(init_tc574); | |
1220 | module_exit(exit_tc574); |