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Commit | Line | Data |
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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/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> | |
1da177e4 LT |
96 | |
97 | #include <asm/uaccess.h> | |
98 | #include <asm/io.h> | |
99 | #include <asm/system.h> | |
100 | ||
101 | /*====================================================================*/ | |
102 | ||
103 | /* Module parameters */ | |
104 | ||
105 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
106 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); | |
107 | MODULE_LICENSE("GPL"); | |
108 | ||
109 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
110 | ||
111 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
112 | INT_MODULE_PARM(max_interrupt_work, 32); | |
113 | ||
114 | /* Force full duplex modes? */ | |
115 | INT_MODULE_PARM(full_duplex, 0); | |
116 | ||
117 | /* Autodetect link polarity reversal? */ | |
118 | INT_MODULE_PARM(auto_polarity, 1); | |
119 | ||
1da177e4 LT |
120 | |
121 | /*====================================================================*/ | |
122 | ||
123 | /* Time in jiffies before concluding the transmitter is hung. */ | |
124 | #define TX_TIMEOUT ((800*HZ)/1000) | |
125 | ||
126 | /* To minimize the size of the driver source and make the driver more | |
127 | readable not all constants are symbolically defined. | |
128 | You'll need the manual if you want to understand driver details anyway. */ | |
129 | /* Offsets from base I/O address. */ | |
130 | #define EL3_DATA 0x00 | |
131 | #define EL3_CMD 0x0e | |
132 | #define EL3_STATUS 0x0e | |
133 | ||
134 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
135 | ||
136 | /* The top five bits written to EL3_CMD are a command, the lower | |
137 | 11 bits are the parameter, if applicable. */ | |
138 | enum el3_cmds { | |
139 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, | |
140 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, | |
141 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, | |
142 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, | |
143 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, | |
144 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, | |
145 | StatsDisable = 22<<11, StopCoax = 23<<11, | |
146 | }; | |
147 | ||
148 | enum elxl_status { | |
149 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, | |
150 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, | |
151 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; | |
152 | ||
153 | /* The SetRxFilter command accepts the following classes: */ | |
154 | enum RxFilter { | |
155 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 | |
156 | }; | |
157 | ||
158 | enum Window0 { | |
159 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ | |
160 | IntrStatus=0x0E, /* Valid in all windows. */ | |
161 | }; | |
162 | /* These assumes the larger EEPROM. */ | |
163 | enum Win0_EEPROM_cmds { | |
164 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, | |
165 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ | |
166 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ | |
167 | }; | |
168 | ||
169 | /* Register window 1 offsets, the window used in normal operation. | |
170 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. | |
171 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ | |
172 | enum Window1 { | |
173 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, | |
174 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, | |
175 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ | |
176 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, | |
177 | }; | |
178 | ||
179 | enum Window3 { /* Window 3: MAC/config bits. */ | |
180 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, | |
181 | }; | |
b6659824 AV |
182 | enum wn3_config { |
183 | Ram_size = 7, | |
184 | Ram_width = 8, | |
185 | Ram_speed = 0x30, | |
186 | Rom_size = 0xc0, | |
187 | Ram_split_shift = 16, | |
188 | Ram_split = 3 << Ram_split_shift, | |
189 | Xcvr_shift = 20, | |
190 | Xcvr = 7 << Xcvr_shift, | |
191 | Autoselect = 0x1000000, | |
1da177e4 LT |
192 | }; |
193 | ||
194 | enum Window4 { /* Window 4: Xcvr/media bits. */ | |
195 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, | |
196 | }; | |
197 | ||
198 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ | |
199 | ||
200 | struct el3_private { | |
fd238232 | 201 | struct pcmcia_device *p_dev; |
1da177e4 LT |
202 | u16 advertising, partner; /* NWay media advertisement */ |
203 | unsigned char phys; /* MII device address */ | |
204 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ | |
205 | /* for transceiver monitoring */ | |
206 | struct timer_list media; | |
207 | unsigned short media_status; | |
208 | unsigned short fast_poll; | |
209 | unsigned long last_irq; | |
210 | spinlock_t window_lock; /* Guards the Window selection */ | |
211 | }; | |
212 | ||
213 | /* Set iff a MII transceiver on any interface requires mdio preamble. | |
214 | This only set with the original DP83840 on older 3c905 boards, so the extra | |
215 | code size of a per-interface flag is not worthwhile. */ | |
216 | static char mii_preamble_required = 0; | |
217 | ||
218 | /* Index of functions. */ | |
219 | ||
15b99ac1 | 220 | static int tc574_config(struct pcmcia_device *link); |
fba395ee | 221 | static void tc574_release(struct pcmcia_device *link); |
1da177e4 | 222 | |
906da809 OJ |
223 | static void mdio_sync(unsigned int ioaddr, int bits); |
224 | static int mdio_read(unsigned int ioaddr, int phy_id, int location); | |
225 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, | |
226 | int value); | |
227 | static unsigned short read_eeprom(unsigned int ioaddr, int index); | |
1da177e4 LT |
228 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
229 | ||
230 | static void tc574_reset(struct net_device *dev); | |
231 | static void media_check(unsigned long arg); | |
232 | static int el3_open(struct net_device *dev); | |
dbf02fae SH |
233 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
234 | struct net_device *dev); | |
7d12e780 | 235 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
1da177e4 LT |
236 | static void update_stats(struct net_device *dev); |
237 | static struct net_device_stats *el3_get_stats(struct net_device *dev); | |
238 | static int el3_rx(struct net_device *dev, int worklimit); | |
239 | static int el3_close(struct net_device *dev); | |
240 | static void el3_tx_timeout(struct net_device *dev); | |
241 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
7282d491 | 242 | static const struct ethtool_ops netdev_ethtool_ops; |
1da177e4 | 243 | static void set_rx_mode(struct net_device *dev); |
e3eef534 | 244 | static void set_multicast_list(struct net_device *dev); |
1da177e4 | 245 | |
cc3b4866 | 246 | static void tc574_detach(struct pcmcia_device *p_dev); |
1da177e4 | 247 | |
1da177e4 LT |
248 | /* |
249 | tc574_attach() creates an "instance" of the driver, allocating | |
250 | local data structures for one device. The device is registered | |
251 | with Card Services. | |
252 | */ | |
fb72e2ff SH |
253 | static const struct net_device_ops el3_netdev_ops = { |
254 | .ndo_open = el3_open, | |
255 | .ndo_stop = el3_close, | |
256 | .ndo_start_xmit = el3_start_xmit, | |
257 | .ndo_tx_timeout = el3_tx_timeout, | |
258 | .ndo_get_stats = el3_get_stats, | |
259 | .ndo_do_ioctl = el3_ioctl, | |
e3eef534 | 260 | .ndo_set_multicast_list = set_multicast_list, |
fb72e2ff SH |
261 | .ndo_change_mtu = eth_change_mtu, |
262 | .ndo_set_mac_address = eth_mac_addr, | |
263 | .ndo_validate_addr = eth_validate_addr, | |
264 | }; | |
1da177e4 | 265 | |
15b99ac1 | 266 | static int tc574_probe(struct pcmcia_device *link) |
1da177e4 LT |
267 | { |
268 | struct el3_private *lp; | |
1da177e4 | 269 | struct net_device *dev; |
1da177e4 | 270 | |
dd0fab5b | 271 | dev_dbg(&link->dev, "3c574_attach()\n"); |
1da177e4 LT |
272 | |
273 | /* Create the PC card device object. */ | |
274 | dev = alloc_etherdev(sizeof(struct el3_private)); | |
275 | if (!dev) | |
f8cfa618 | 276 | return -ENOMEM; |
1da177e4 | 277 | lp = netdev_priv(dev); |
1da177e4 | 278 | link->priv = dev; |
fba395ee | 279 | lp->p_dev = link; |
1da177e4 LT |
280 | |
281 | spin_lock_init(&lp->window_lock); | |
282 | link->io.NumPorts1 = 32; | |
283 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; | |
1da177e4 | 284 | link->conf.Attributes = CONF_ENABLE_IRQ; |
1da177e4 LT |
285 | link->conf.IntType = INT_MEMORY_AND_IO; |
286 | link->conf.ConfigIndex = 1; | |
1da177e4 | 287 | |
fb72e2ff | 288 | dev->netdev_ops = &el3_netdev_ops; |
1da177e4 | 289 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
1da177e4 | 290 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 291 | |
15b99ac1 | 292 | return tc574_config(link); |
1da177e4 LT |
293 | } /* tc574_attach */ |
294 | ||
295 | /* | |
296 | ||
297 | This deletes a driver "instance". The device is de-registered | |
298 | with Card Services. If it has been released, all local data | |
299 | structures are freed. Otherwise, the structures will be freed | |
300 | when the device is released. | |
301 | ||
302 | */ | |
303 | ||
fba395ee | 304 | static void tc574_detach(struct pcmcia_device *link) |
1da177e4 LT |
305 | { |
306 | struct net_device *dev = link->priv; | |
1da177e4 | 307 | |
dd0fab5b | 308 | dev_dbg(&link->dev, "3c574_detach()\n"); |
1da177e4 | 309 | |
c7c2fa07 | 310 | unregister_netdev(dev); |
1da177e4 | 311 | |
e2d40963 | 312 | tc574_release(link); |
1da177e4 | 313 | |
1da177e4 LT |
314 | free_netdev(dev); |
315 | } /* tc574_detach */ | |
316 | ||
317 | /* | |
318 | tc574_config() is scheduled to run after a CARD_INSERTION event | |
319 | is received, to configure the PCMCIA socket, and to make the | |
320 | ethernet device available to the system. | |
321 | */ | |
322 | ||
f71e1309 | 323 | static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; |
1da177e4 | 324 | |
15b99ac1 | 325 | static int tc574_config(struct pcmcia_device *link) |
1da177e4 | 326 | { |
1da177e4 LT |
327 | struct net_device *dev = link->priv; |
328 | struct el3_private *lp = netdev_priv(dev); | |
dd0fab5b | 329 | int ret, i, j; |
906da809 | 330 | unsigned int ioaddr; |
b1e247ad | 331 | __be16 *phys_addr; |
1da177e4 | 332 | char *cardname; |
b6659824 | 333 | __u32 config; |
dddfbd82 DB |
334 | u8 *buf; |
335 | size_t len; | |
1da177e4 | 336 | |
b1e247ad | 337 | phys_addr = (__be16 *)dev->dev_addr; |
1da177e4 | 338 | |
dd0fab5b | 339 | dev_dbg(&link->dev, "3c574_config()\n"); |
1da177e4 | 340 | |
1da177e4 LT |
341 | link->io.IOAddrLines = 16; |
342 | for (i = j = 0; j < 0x400; j += 0x20) { | |
343 | link->io.BasePort1 = j ^ 0x300; | |
fba395ee | 344 | i = pcmcia_request_io(link, &link->io); |
4c89e88b DB |
345 | if (i == 0) |
346 | break; | |
1da177e4 | 347 | } |
dd0fab5b DB |
348 | if (i != 0) |
349 | goto failed; | |
350 | ||
eb14120f | 351 | ret = pcmcia_request_irq(link, el3_interrupt); |
dd0fab5b DB |
352 | if (ret) |
353 | goto failed; | |
354 | ||
355 | ret = pcmcia_request_configuration(link, &link->conf); | |
356 | if (ret) | |
1da177e4 | 357 | goto failed; |
1da177e4 | 358 | |
eb14120f | 359 | dev->irq = link->irq; |
1da177e4 LT |
360 | dev->base_addr = link->io.BasePort1; |
361 | ||
362 | ioaddr = dev->base_addr; | |
363 | ||
364 | /* The 3c574 normally uses an EEPROM for configuration info, including | |
365 | the hardware address. The future products may include a modem chip | |
366 | and put the address in the CIS. */ | |
dddfbd82 DB |
367 | |
368 | len = pcmcia_get_tuple(link, 0x88, &buf); | |
369 | if (buf && len >= 6) { | |
1da177e4 | 370 | for (i = 0; i < 3; i++) |
dddfbd82 DB |
371 | phys_addr[i] = htons(le16_to_cpu(buf[i * 2])); |
372 | kfree(buf); | |
1da177e4 | 373 | } else { |
dddfbd82 | 374 | kfree(buf); /* 0 < len < 6 */ |
1da177e4 LT |
375 | EL3WINDOW(0); |
376 | for (i = 0; i < 3; i++) | |
377 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); | |
b1e247ad | 378 | if (phys_addr[0] == htons(0x6060)) { |
1da177e4 LT |
379 | printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx" |
380 | "-0x%03lx\n", dev->base_addr, dev->base_addr+15); | |
381 | goto failed; | |
382 | } | |
383 | } | |
a9606fd3 DB |
384 | if (link->prod_id[1]) |
385 | cardname = link->prod_id[1]; | |
386 | else | |
1da177e4 LT |
387 | cardname = "3Com 3c574"; |
388 | ||
389 | { | |
390 | u_char mcr; | |
391 | outw(2<<11, ioaddr + RunnerRdCtrl); | |
392 | mcr = inb(ioaddr + 2); | |
393 | outw(0<<11, ioaddr + RunnerRdCtrl); | |
394 | printk(KERN_INFO " ASIC rev %d,", mcr>>3); | |
395 | EL3WINDOW(3); | |
b6659824 AV |
396 | config = inl(ioaddr + Wn3_Config); |
397 | lp->default_media = (config & Xcvr) >> Xcvr_shift; | |
398 | lp->autoselect = config & Autoselect ? 1 : 0; | |
1da177e4 LT |
399 | } |
400 | ||
401 | init_timer(&lp->media); | |
402 | ||
403 | { | |
404 | int phy; | |
405 | ||
406 | /* Roadrunner only: Turn on the MII transceiver */ | |
407 | outw(0x8040, ioaddr + Wn3_Options); | |
408 | mdelay(1); | |
409 | outw(0xc040, ioaddr + Wn3_Options); | |
410 | tc574_wait_for_completion(dev, TxReset); | |
411 | tc574_wait_for_completion(dev, RxReset); | |
412 | mdelay(1); | |
413 | outw(0x8040, ioaddr + Wn3_Options); | |
414 | ||
415 | EL3WINDOW(4); | |
416 | for (phy = 1; phy <= 32; phy++) { | |
417 | int mii_status; | |
418 | mdio_sync(ioaddr, 32); | |
419 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); | |
420 | if (mii_status != 0xffff) { | |
421 | lp->phys = phy & 0x1f; | |
dd0fab5b DB |
422 | dev_dbg(&link->dev, " MII transceiver at " |
423 | "index %d, status %x.\n", | |
1da177e4 LT |
424 | phy, mii_status); |
425 | if ((mii_status & 0x0040) == 0) | |
426 | mii_preamble_required = 1; | |
427 | break; | |
428 | } | |
429 | } | |
430 | if (phy > 32) { | |
431 | printk(KERN_NOTICE " No MII transceivers found!\n"); | |
432 | goto failed; | |
433 | } | |
434 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; | |
435 | mdio_write(ioaddr, lp->phys, 16, i); | |
436 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); | |
437 | if (full_duplex) { | |
438 | /* Only advertise the FD media types. */ | |
439 | lp->advertising &= ~0x02a0; | |
440 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
441 | } | |
442 | } | |
443 | ||
dd2e5a15 | 444 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
445 | |
446 | if (register_netdev(dev) != 0) { | |
447 | printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n"); | |
1da177e4 LT |
448 | goto failed; |
449 | } | |
450 | ||
0795af57 | 451 | printk(KERN_INFO "%s: %s at io %#3lx, irq %d, " |
e174961c | 452 | "hw_addr %pM.\n", |
0795af57 | 453 | dev->name, cardname, dev->base_addr, dev->irq, |
e174961c | 454 | dev->dev_addr); |
1da177e4 | 455 | printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n", |
b6659824 AV |
456 | 8 << config & Ram_size, |
457 | ram_split[(config & Ram_split) >> Ram_split_shift], | |
458 | config & Autoselect ? "autoselect " : ""); | |
1da177e4 | 459 | |
15b99ac1 | 460 | return 0; |
1da177e4 | 461 | |
1da177e4 LT |
462 | failed: |
463 | tc574_release(link); | |
15b99ac1 | 464 | return -ENODEV; |
1da177e4 LT |
465 | |
466 | } /* tc574_config */ | |
467 | ||
468 | /* | |
469 | After a card is removed, tc574_release() will unregister the net | |
470 | device, and release the PCMCIA configuration. If the device is | |
471 | still open, this will be postponed until it is closed. | |
472 | */ | |
473 | ||
fba395ee | 474 | static void tc574_release(struct pcmcia_device *link) |
1da177e4 | 475 | { |
fba395ee | 476 | pcmcia_disable_device(link); |
1da177e4 LT |
477 | } |
478 | ||
fba395ee | 479 | static int tc574_suspend(struct pcmcia_device *link) |
98e4c28b | 480 | { |
98e4c28b DB |
481 | struct net_device *dev = link->priv; |
482 | ||
e2d40963 | 483 | if (link->open) |
8661bb5b | 484 | netif_device_detach(dev); |
98e4c28b DB |
485 | |
486 | return 0; | |
487 | } | |
488 | ||
fba395ee | 489 | static int tc574_resume(struct pcmcia_device *link) |
98e4c28b | 490 | { |
98e4c28b DB |
491 | struct net_device *dev = link->priv; |
492 | ||
e2d40963 | 493 | if (link->open) { |
8661bb5b DB |
494 | tc574_reset(dev); |
495 | netif_device_attach(dev); | |
98e4c28b DB |
496 | } |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
1da177e4 LT |
501 | static void dump_status(struct net_device *dev) |
502 | { | |
906da809 | 503 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
504 | EL3WINDOW(1); |
505 | printk(KERN_INFO " irq status %04x, rx status %04x, tx status " | |
506 | "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS), | |
507 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), | |
508 | inw(ioaddr+TxFree)); | |
509 | EL3WINDOW(4); | |
510 | printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x" | |
511 | " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06), | |
512 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); | |
513 | EL3WINDOW(1); | |
514 | } | |
515 | ||
516 | /* | |
517 | Use this for commands that may take time to finish | |
518 | */ | |
519 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) | |
520 | { | |
521 | int i = 1500; | |
522 | outw(cmd, dev->base_addr + EL3_CMD); | |
523 | while (--i > 0) | |
524 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; | |
525 | if (i == 0) | |
526 | printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd); | |
527 | } | |
528 | ||
529 | /* Read a word from the EEPROM using the regular EEPROM access register. | |
530 | Assume that we are in register window zero. | |
531 | */ | |
906da809 | 532 | static unsigned short read_eeprom(unsigned int ioaddr, int index) |
1da177e4 LT |
533 | { |
534 | int timer; | |
535 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); | |
536 | /* Pause for at least 162 usec for the read to take place. */ | |
537 | for (timer = 1620; timer >= 0; timer--) { | |
538 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) | |
539 | break; | |
540 | } | |
541 | return inw(ioaddr + Wn0EepromData); | |
542 | } | |
543 | ||
544 | /* MII transceiver control section. | |
545 | Read and write the MII registers using software-generated serial | |
546 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
547 | for details. | |
548 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the | |
549 | slow PC card interface. */ | |
550 | ||
551 | #define MDIO_SHIFT_CLK 0x01 | |
552 | #define MDIO_DIR_WRITE 0x04 | |
553 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) | |
554 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) | |
555 | #define MDIO_DATA_READ 0x02 | |
556 | #define MDIO_ENB_IN 0x00 | |
557 | ||
558 | /* Generate the preamble required for initial synchronization and | |
559 | a few older transceivers. */ | |
906da809 | 560 | static void mdio_sync(unsigned int ioaddr, int bits) |
1da177e4 | 561 | { |
906da809 | 562 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
563 | |
564 | /* Establish sync by sending at least 32 logic ones. */ | |
565 | while (-- bits >= 0) { | |
566 | outw(MDIO_DATA_WRITE1, mdio_addr); | |
567 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); | |
568 | } | |
569 | } | |
570 | ||
906da809 | 571 | static int mdio_read(unsigned int ioaddr, int phy_id, int location) |
1da177e4 LT |
572 | { |
573 | int i; | |
574 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
575 | unsigned int retval = 0; | |
906da809 | 576 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
577 | |
578 | if (mii_preamble_required) | |
579 | mdio_sync(ioaddr, 32); | |
580 | ||
581 | /* Shift the read command bits out. */ | |
582 | for (i = 14; i >= 0; i--) { | |
583 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
584 | outw(dataval, mdio_addr); | |
585 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
586 | } | |
587 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
588 | for (i = 19; i > 0; i--) { | |
589 | outw(MDIO_ENB_IN, mdio_addr); | |
590 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); | |
591 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
592 | } | |
593 | return (retval>>1) & 0xffff; | |
594 | } | |
595 | ||
906da809 | 596 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value) |
1da177e4 LT |
597 | { |
598 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; | |
906da809 | 599 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
600 | int i; |
601 | ||
602 | if (mii_preamble_required) | |
603 | mdio_sync(ioaddr, 32); | |
604 | ||
605 | /* Shift the command bits out. */ | |
606 | for (i = 31; i >= 0; i--) { | |
607 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
608 | outw(dataval, mdio_addr); | |
609 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
610 | } | |
611 | /* Leave the interface idle. */ | |
612 | for (i = 1; i >= 0; i--) { | |
613 | outw(MDIO_ENB_IN, mdio_addr); | |
614 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
615 | } | |
616 | ||
617 | return; | |
618 | } | |
619 | ||
620 | /* Reset and restore all of the 3c574 registers. */ | |
621 | static void tc574_reset(struct net_device *dev) | |
622 | { | |
623 | struct el3_private *lp = netdev_priv(dev); | |
624 | int i; | |
906da809 | 625 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
626 | unsigned long flags; |
627 | ||
628 | tc574_wait_for_completion(dev, TotalReset|0x10); | |
629 | ||
630 | spin_lock_irqsave(&lp->window_lock, flags); | |
631 | /* Clear any transactions in progress. */ | |
632 | outw(0, ioaddr + RunnerWrCtrl); | |
633 | outw(0, ioaddr + RunnerRdCtrl); | |
634 | ||
635 | /* Set the station address and mask. */ | |
636 | EL3WINDOW(2); | |
637 | for (i = 0; i < 6; i++) | |
638 | outb(dev->dev_addr[i], ioaddr + i); | |
639 | for (; i < 12; i+=2) | |
640 | outw(0, ioaddr + i); | |
641 | ||
642 | /* Reset config options */ | |
643 | EL3WINDOW(3); | |
644 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
645 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, | |
646 | ioaddr + Wn3_Config); | |
647 | /* Roadrunner only: Turn on the MII transceiver. */ | |
648 | outw(0x8040, ioaddr + Wn3_Options); | |
649 | mdelay(1); | |
650 | outw(0xc040, ioaddr + Wn3_Options); | |
651 | EL3WINDOW(1); | |
652 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
653 | ||
654 | tc574_wait_for_completion(dev, TxReset); | |
655 | tc574_wait_for_completion(dev, RxReset); | |
656 | mdelay(1); | |
657 | spin_lock_irqsave(&lp->window_lock, flags); | |
658 | EL3WINDOW(3); | |
659 | outw(0x8040, ioaddr + Wn3_Options); | |
660 | ||
661 | /* Switch to the stats window, and clear all stats by reading. */ | |
662 | outw(StatsDisable, ioaddr + EL3_CMD); | |
663 | EL3WINDOW(6); | |
664 | for (i = 0; i < 10; i++) | |
665 | inb(ioaddr + i); | |
666 | inw(ioaddr + 10); | |
667 | inw(ioaddr + 12); | |
668 | EL3WINDOW(4); | |
669 | inb(ioaddr + 12); | |
670 | inb(ioaddr + 13); | |
671 | ||
672 | /* .. enable any extra statistics bits.. */ | |
673 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
674 | ||
675 | EL3WINDOW(1); | |
676 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
677 | ||
678 | /* .. re-sync MII and re-fill what NWay is advertising. */ | |
679 | mdio_sync(ioaddr, 32); | |
680 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
681 | if (!auto_polarity) { | |
682 | /* works for TDK 78Q2120 series MII's */ | |
1569d9e8 | 683 | i = mdio_read(ioaddr, lp->phys, 16) | 0x20; |
1da177e4 LT |
684 | mdio_write(ioaddr, lp->phys, 16, i); |
685 | } | |
686 | ||
687 | spin_lock_irqsave(&lp->window_lock, flags); | |
688 | /* Switch to register set 1 for normal use, just for TxFree. */ | |
689 | set_rx_mode(dev); | |
690 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
691 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
692 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
693 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
694 | /* Allow status bits to be seen. */ | |
695 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); | |
696 | /* Ack all pending events, and set active indicator mask. */ | |
697 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
698 | ioaddr + EL3_CMD); | |
699 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
700 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); | |
701 | } | |
702 | ||
703 | static int el3_open(struct net_device *dev) | |
704 | { | |
705 | struct el3_private *lp = netdev_priv(dev); | |
fba395ee | 706 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 707 | |
9940ec36 | 708 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
709 | return -ENODEV; |
710 | ||
711 | link->open++; | |
712 | netif_start_queue(dev); | |
713 | ||
714 | tc574_reset(dev); | |
715 | lp->media.function = &media_check; | |
716 | lp->media.data = (unsigned long) dev; | |
717 | lp->media.expires = jiffies + HZ; | |
718 | add_timer(&lp->media); | |
719 | ||
dd0fab5b | 720 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
1da177e4 LT |
721 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
726 | static void el3_tx_timeout(struct net_device *dev) | |
727 | { | |
906da809 | 728 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
729 | |
730 | printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name); | |
731 | dump_status(dev); | |
2e8d31d5 | 732 | dev->stats.tx_errors++; |
1da177e4 LT |
733 | dev->trans_start = jiffies; |
734 | /* Issue TX_RESET and TX_START commands. */ | |
735 | tc574_wait_for_completion(dev, TxReset); | |
736 | outw(TxEnable, ioaddr + EL3_CMD); | |
737 | netif_wake_queue(dev); | |
738 | } | |
739 | ||
740 | static void pop_tx_status(struct net_device *dev) | |
741 | { | |
906da809 | 742 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
743 | int i; |
744 | ||
745 | /* Clear the Tx status stack. */ | |
746 | for (i = 32; i > 0; i--) { | |
747 | u_char tx_status = inb(ioaddr + TxStatus); | |
748 | if (!(tx_status & 0x84)) | |
749 | break; | |
750 | /* reset transmitter on jabber error or underrun */ | |
751 | if (tx_status & 0x30) | |
752 | tc574_wait_for_completion(dev, TxReset); | |
753 | if (tx_status & 0x38) { | |
dd0fab5b | 754 | pr_debug("%s: transmit error: status 0x%02x\n", |
1da177e4 LT |
755 | dev->name, tx_status); |
756 | outw(TxEnable, ioaddr + EL3_CMD); | |
2e8d31d5 | 757 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
758 | } |
759 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
760 | } | |
761 | } | |
762 | ||
dbf02fae SH |
763 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
764 | struct net_device *dev) | |
1da177e4 | 765 | { |
906da809 | 766 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
767 | struct el3_private *lp = netdev_priv(dev); |
768 | unsigned long flags; | |
769 | ||
dd0fab5b | 770 | pr_debug("%s: el3_start_xmit(length = %ld) called, " |
1da177e4 LT |
771 | "status %4.4x.\n", dev->name, (long)skb->len, |
772 | inw(ioaddr + EL3_STATUS)); | |
773 | ||
774 | spin_lock_irqsave(&lp->window_lock, flags); | |
df245dce AK |
775 | |
776 | dev->stats.tx_bytes += skb->len; | |
777 | ||
778 | /* Put out the doubleword header... */ | |
1da177e4 LT |
779 | outw(skb->len, ioaddr + TX_FIFO); |
780 | outw(0, ioaddr + TX_FIFO); | |
df245dce | 781 | /* ... and the packet rounded to a doubleword. */ |
1da177e4 LT |
782 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); |
783 | ||
784 | dev->trans_start = jiffies; | |
785 | ||
786 | /* TxFree appears only in Window 1, not offset 0x1c. */ | |
787 | if (inw(ioaddr + TxFree) <= 1536) { | |
788 | netif_stop_queue(dev); | |
789 | /* Interrupt us when the FIFO has room for max-sized packet. | |
790 | The threshold is in units of dwords. */ | |
791 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); | |
792 | } | |
793 | ||
794 | pop_tx_status(dev); | |
795 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
796 | dev_kfree_skb(skb); | |
6ed10654 | 797 | return NETDEV_TX_OK; |
1da177e4 LT |
798 | } |
799 | ||
800 | /* The EL3 interrupt handler. */ | |
7d12e780 | 801 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
1da177e4 LT |
802 | { |
803 | struct net_device *dev = (struct net_device *) dev_id; | |
804 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 805 | unsigned int ioaddr; |
1da177e4 LT |
806 | unsigned status; |
807 | int work_budget = max_interrupt_work; | |
808 | int handled = 0; | |
809 | ||
810 | if (!netif_device_present(dev)) | |
811 | return IRQ_NONE; | |
812 | ioaddr = dev->base_addr; | |
813 | ||
dd0fab5b | 814 | pr_debug("%s: interrupt, status %4.4x.\n", |
1da177e4 LT |
815 | dev->name, inw(ioaddr + EL3_STATUS)); |
816 | ||
817 | spin_lock(&lp->window_lock); | |
818 | ||
819 | while ((status = inw(ioaddr + EL3_STATUS)) & | |
820 | (IntLatch | RxComplete | RxEarly | StatsFull)) { | |
821 | if (!netif_device_present(dev) || | |
822 | ((status & 0xe000) != 0x2000)) { | |
dd0fab5b | 823 | pr_debug("%s: Interrupt from dead card\n", dev->name); |
1da177e4 LT |
824 | break; |
825 | } | |
826 | ||
827 | handled = 1; | |
828 | ||
829 | if (status & RxComplete) | |
830 | work_budget = el3_rx(dev, work_budget); | |
831 | ||
832 | if (status & TxAvailable) { | |
dd0fab5b | 833 | pr_debug(" TX room bit was handled.\n"); |
1da177e4 LT |
834 | /* There's room in the FIFO for a full-sized packet. */ |
835 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
836 | netif_wake_queue(dev); | |
837 | } | |
838 | ||
839 | if (status & TxComplete) | |
840 | pop_tx_status(dev); | |
841 | ||
842 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
843 | /* Handle all uncommon interrupts. */ | |
844 | if (status & StatsFull) | |
845 | update_stats(dev); | |
846 | if (status & RxEarly) { | |
847 | work_budget = el3_rx(dev, work_budget); | |
848 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
849 | } | |
850 | if (status & AdapterFailure) { | |
851 | u16 fifo_diag; | |
852 | EL3WINDOW(4); | |
853 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); | |
854 | EL3WINDOW(1); | |
855 | printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic" | |
856 | " register %04x.\n", dev->name, fifo_diag); | |
857 | if (fifo_diag & 0x0400) { | |
858 | /* Tx overrun */ | |
859 | tc574_wait_for_completion(dev, TxReset); | |
860 | outw(TxEnable, ioaddr + EL3_CMD); | |
861 | } | |
862 | if (fifo_diag & 0x2000) { | |
863 | /* Rx underrun */ | |
864 | tc574_wait_for_completion(dev, RxReset); | |
865 | set_rx_mode(dev); | |
866 | outw(RxEnable, ioaddr + EL3_CMD); | |
867 | } | |
868 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); | |
869 | } | |
870 | } | |
871 | ||
872 | if (--work_budget < 0) { | |
dd0fab5b | 873 | pr_debug("%s: Too much work in interrupt, " |
1da177e4 LT |
874 | "status %4.4x.\n", dev->name, status); |
875 | /* Clear all interrupts */ | |
876 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); | |
877 | break; | |
878 | } | |
879 | /* Acknowledge the IRQ. */ | |
880 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
881 | } | |
882 | ||
dd0fab5b | 883 | pr_debug("%s: exiting interrupt, status %4.4x.\n", |
1da177e4 LT |
884 | dev->name, inw(ioaddr + EL3_STATUS)); |
885 | ||
886 | spin_unlock(&lp->window_lock); | |
887 | return IRQ_RETVAL(handled); | |
888 | } | |
889 | ||
890 | /* | |
891 | This timer serves two purposes: to check for missed interrupts | |
892 | (and as a last resort, poll the NIC for events), and to monitor | |
893 | the MII, reporting changes in cable status. | |
894 | */ | |
895 | static void media_check(unsigned long arg) | |
896 | { | |
897 | struct net_device *dev = (struct net_device *) arg; | |
898 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 899 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
900 | unsigned long flags; |
901 | unsigned short /* cable, */ media, partner; | |
902 | ||
903 | if (!netif_device_present(dev)) | |
904 | goto reschedule; | |
905 | ||
906 | /* Check for pending interrupt with expired latency timer: with | |
907 | this, we can limp along even if the interrupt is blocked */ | |
908 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { | |
909 | if (!lp->fast_poll) | |
910 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); | |
671c8806 KK |
911 | |
912 | local_irq_save(flags); | |
e363d138 | 913 | el3_interrupt(dev->irq, dev); |
671c8806 KK |
914 | local_irq_restore(flags); |
915 | ||
1da177e4 LT |
916 | lp->fast_poll = HZ; |
917 | } | |
918 | if (lp->fast_poll) { | |
919 | lp->fast_poll--; | |
920 | lp->media.expires = jiffies + 2*HZ/100; | |
921 | add_timer(&lp->media); | |
922 | return; | |
923 | } | |
924 | ||
925 | spin_lock_irqsave(&lp->window_lock, flags); | |
926 | EL3WINDOW(4); | |
927 | media = mdio_read(ioaddr, lp->phys, 1); | |
928 | partner = mdio_read(ioaddr, lp->phys, 5); | |
929 | EL3WINDOW(1); | |
930 | ||
931 | if (media != lp->media_status) { | |
932 | if ((media ^ lp->media_status) & 0x0004) | |
933 | printk(KERN_INFO "%s: %s link beat\n", dev->name, | |
934 | (lp->media_status & 0x0004) ? "lost" : "found"); | |
935 | if ((media ^ lp->media_status) & 0x0020) { | |
936 | lp->partner = 0; | |
937 | if (lp->media_status & 0x0020) { | |
938 | printk(KERN_INFO "%s: autonegotiation restarted\n", | |
939 | dev->name); | |
940 | } else if (partner) { | |
941 | partner &= lp->advertising; | |
942 | lp->partner = partner; | |
943 | printk(KERN_INFO "%s: autonegotiation complete: " | |
944 | "%sbaseT-%cD selected\n", dev->name, | |
945 | ((partner & 0x0180) ? "100" : "10"), | |
946 | ((partner & 0x0140) ? 'F' : 'H')); | |
947 | } else { | |
948 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", | |
949 | dev->name); | |
950 | } | |
951 | ||
952 | EL3WINDOW(3); | |
953 | outb((partner & 0x0140 ? 0x20 : 0) | | |
954 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
955 | EL3WINDOW(1); | |
956 | ||
957 | } | |
958 | if (media & 0x0010) | |
959 | printk(KERN_INFO "%s: remote fault detected\n", | |
960 | dev->name); | |
961 | if (media & 0x0002) | |
962 | printk(KERN_INFO "%s: jabber detected\n", dev->name); | |
963 | lp->media_status = media; | |
964 | } | |
965 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
966 | ||
967 | reschedule: | |
968 | lp->media.expires = jiffies + HZ; | |
969 | add_timer(&lp->media); | |
970 | } | |
971 | ||
972 | static struct net_device_stats *el3_get_stats(struct net_device *dev) | |
973 | { | |
974 | struct el3_private *lp = netdev_priv(dev); | |
975 | ||
976 | if (netif_device_present(dev)) { | |
977 | unsigned long flags; | |
978 | spin_lock_irqsave(&lp->window_lock, flags); | |
979 | update_stats(dev); | |
980 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
981 | } | |
2e8d31d5 | 982 | return &dev->stats; |
1da177e4 LT |
983 | } |
984 | ||
985 | /* Update statistics. | |
986 | Suprisingly this need not be run single-threaded, but it effectively is. | |
987 | The counters clear when read, so the adds must merely be atomic. | |
988 | */ | |
989 | static void update_stats(struct net_device *dev) | |
990 | { | |
906da809 | 991 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
992 | u8 rx, tx, up; |
993 | ||
dd0fab5b | 994 | pr_debug("%s: updating the statistics.\n", dev->name); |
1da177e4 LT |
995 | |
996 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ | |
997 | return; | |
998 | ||
999 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ | |
1000 | /* Switch to the stats window, and read everything. */ | |
1001 | EL3WINDOW(6); | |
2e8d31d5 PZ |
1002 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
1003 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1da177e4 | 1004 | /* Multiple collisions. */ inb(ioaddr + 2); |
2e8d31d5 PZ |
1005 | dev->stats.collisions += inb(ioaddr + 3); |
1006 | dev->stats.tx_window_errors += inb(ioaddr + 4); | |
1007 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); | |
1008 | dev->stats.tx_packets += inb(ioaddr + 6); | |
1da177e4 | 1009 | up = inb(ioaddr + 9); |
2e8d31d5 | 1010 | dev->stats.tx_packets += (up&0x30) << 4; |
1da177e4 LT |
1011 | /* Rx packets */ inb(ioaddr + 7); |
1012 | /* Tx deferrals */ inb(ioaddr + 8); | |
1013 | rx = inw(ioaddr + 10); | |
1014 | tx = inw(ioaddr + 12); | |
1015 | ||
1016 | EL3WINDOW(4); | |
1017 | /* BadSSD */ inb(ioaddr + 12); | |
1018 | up = inb(ioaddr + 13); | |
1019 | ||
1da177e4 LT |
1020 | EL3WINDOW(1); |
1021 | } | |
1022 | ||
1023 | static int el3_rx(struct net_device *dev, int worklimit) | |
1024 | { | |
906da809 | 1025 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
1026 | short rx_status; |
1027 | ||
dd0fab5b | 1028 | pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
1da177e4 LT |
1029 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
1030 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && | |
b9bdcd9b RK |
1031 | worklimit > 0) { |
1032 | worklimit--; | |
1da177e4 LT |
1033 | if (rx_status & 0x4000) { /* Error, update stats. */ |
1034 | short error = rx_status & 0x3800; | |
2e8d31d5 | 1035 | dev->stats.rx_errors++; |
1da177e4 | 1036 | switch (error) { |
2e8d31d5 PZ |
1037 | case 0x0000: dev->stats.rx_over_errors++; break; |
1038 | case 0x0800: dev->stats.rx_length_errors++; break; | |
1039 | case 0x1000: dev->stats.rx_frame_errors++; break; | |
1040 | case 0x1800: dev->stats.rx_length_errors++; break; | |
1041 | case 0x2000: dev->stats.rx_frame_errors++; break; | |
1042 | case 0x2800: dev->stats.rx_crc_errors++; break; | |
1da177e4 LT |
1043 | } |
1044 | } else { | |
1045 | short pkt_len = rx_status & 0x7ff; | |
1046 | struct sk_buff *skb; | |
1047 | ||
1048 | skb = dev_alloc_skb(pkt_len+5); | |
1049 | ||
dd0fab5b | 1050 | pr_debug(" Receiving packet size %d status %4.4x.\n", |
1da177e4 LT |
1051 | pkt_len, rx_status); |
1052 | if (skb != NULL) { | |
1da177e4 LT |
1053 | skb_reserve(skb, 2); |
1054 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), | |
1055 | ((pkt_len+3)>>2)); | |
1056 | skb->protocol = eth_type_trans(skb, dev); | |
1057 | netif_rx(skb); | |
2e8d31d5 PZ |
1058 | dev->stats.rx_packets++; |
1059 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1060 | } else { |
dd0fab5b | 1061 | pr_debug("%s: couldn't allocate a sk_buff of" |
1da177e4 | 1062 | " size %d.\n", dev->name, pkt_len); |
2e8d31d5 | 1063 | dev->stats.rx_dropped++; |
1da177e4 LT |
1064 | } |
1065 | } | |
1066 | tc574_wait_for_completion(dev, RxDiscard); | |
1067 | } | |
1068 | ||
1069 | return worklimit; | |
1070 | } | |
1071 | ||
1072 | static void netdev_get_drvinfo(struct net_device *dev, | |
1073 | struct ethtool_drvinfo *info) | |
1074 | { | |
1075 | strcpy(info->driver, "3c574_cs"); | |
1076 | } | |
1077 | ||
7282d491 | 1078 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
1079 | .get_drvinfo = netdev_get_drvinfo, |
1080 | }; | |
1081 | ||
1082 | /* Provide ioctl() calls to examine the MII xcvr state. */ | |
1083 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1084 | { | |
1085 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 1086 | unsigned int ioaddr = dev->base_addr; |
0fa0ee05 | 1087 | struct mii_ioctl_data *data = if_mii(rq); |
1da177e4 LT |
1088 | int phy = lp->phys & 0x1f; |
1089 | ||
dd0fab5b | 1090 | pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", |
1da177e4 | 1091 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
0fa0ee05 | 1092 | data->phy_id, data->reg_num, data->val_in, data->val_out); |
1da177e4 LT |
1093 | |
1094 | switch(cmd) { | |
1095 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ | |
0fa0ee05 | 1096 | data->phy_id = phy; |
1da177e4 LT |
1097 | case SIOCGMIIREG: /* Read the specified MII register. */ |
1098 | { | |
1099 | int saved_window; | |
1100 | unsigned long flags; | |
1101 | ||
1102 | spin_lock_irqsave(&lp->window_lock, flags); | |
1103 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1104 | EL3WINDOW(4); | |
0fa0ee05 BH |
1105 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, |
1106 | data->reg_num & 0x1f); | |
1da177e4 LT |
1107 | EL3WINDOW(saved_window); |
1108 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1109 | return 0; | |
1110 | } | |
1111 | case SIOCSMIIREG: /* Write the specified MII register */ | |
1112 | { | |
1113 | int saved_window; | |
1114 | unsigned long flags; | |
1115 | ||
1da177e4 LT |
1116 | spin_lock_irqsave(&lp->window_lock, flags); |
1117 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1118 | EL3WINDOW(4); | |
0fa0ee05 BH |
1119 | mdio_write(ioaddr, data->phy_id & 0x1f, |
1120 | data->reg_num & 0x1f, data->val_in); | |
1da177e4 LT |
1121 | EL3WINDOW(saved_window); |
1122 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1123 | return 0; | |
1124 | } | |
1125 | default: | |
1126 | return -EOPNOTSUPP; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not | |
1131 | documented. Until it is we revert to receiving all multicast frames when | |
1132 | any multicast reception is desired. | |
1133 | Note: My other drivers emit a log message whenever promiscuous mode is | |
1134 | entered to help detect password sniffers. This is less desirable on | |
1135 | typical PC card machines, so we omit the message. | |
1136 | */ | |
1137 | ||
1138 | static void set_rx_mode(struct net_device *dev) | |
1139 | { | |
906da809 | 1140 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
1141 | |
1142 | if (dev->flags & IFF_PROMISC) | |
1143 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, | |
1144 | ioaddr + EL3_CMD); | |
4cd24eaf | 1145 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
1da177e4 LT |
1146 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); |
1147 | else | |
1148 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); | |
1149 | } | |
1150 | ||
e3eef534 KK |
1151 | static void set_multicast_list(struct net_device *dev) |
1152 | { | |
1153 | struct el3_private *lp = netdev_priv(dev); | |
1154 | unsigned long flags; | |
1155 | ||
1156 | spin_lock_irqsave(&lp->window_lock, flags); | |
1157 | set_rx_mode(dev); | |
1158 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1159 | } | |
1160 | ||
1da177e4 LT |
1161 | static int el3_close(struct net_device *dev) |
1162 | { | |
906da809 | 1163 | unsigned int ioaddr = dev->base_addr; |
1da177e4 | 1164 | struct el3_private *lp = netdev_priv(dev); |
fba395ee | 1165 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 1166 | |
dd0fab5b | 1167 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); |
1da177e4 | 1168 | |
9940ec36 | 1169 | if (pcmcia_dev_present(link)) { |
1da177e4 LT |
1170 | unsigned long flags; |
1171 | ||
1172 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1173 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1174 | ||
1175 | /* Disable the receiver and transmitter. */ | |
1176 | outw(RxDisable, ioaddr + EL3_CMD); | |
1177 | outw(TxDisable, ioaddr + EL3_CMD); | |
1178 | ||
1179 | /* Note: Switching to window 0 may disable the IRQ. */ | |
1180 | EL3WINDOW(0); | |
1181 | spin_lock_irqsave(&lp->window_lock, flags); | |
1182 | update_stats(dev); | |
1183 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
b9a6eaff DR |
1184 | |
1185 | /* force interrupts off */ | |
1186 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); | |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | link->open--; | |
1190 | netif_stop_queue(dev); | |
1191 | del_timer_sync(&lp->media); | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | ||
270b6e94 DB |
1196 | static struct pcmcia_device_id tc574_ids[] = { |
1197 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), | |
f0a3a153 | 1198 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"), |
270b6e94 DB |
1199 | PCMCIA_DEVICE_NULL, |
1200 | }; | |
1201 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); | |
1202 | ||
1da177e4 LT |
1203 | static struct pcmcia_driver tc574_driver = { |
1204 | .owner = THIS_MODULE, | |
1205 | .drv = { | |
1206 | .name = "3c574_cs", | |
1207 | }, | |
15b99ac1 | 1208 | .probe = tc574_probe, |
cc3b4866 | 1209 | .remove = tc574_detach, |
270b6e94 | 1210 | .id_table = tc574_ids, |
98e4c28b DB |
1211 | .suspend = tc574_suspend, |
1212 | .resume = tc574_resume, | |
1da177e4 LT |
1213 | }; |
1214 | ||
1215 | static int __init init_tc574(void) | |
1216 | { | |
1217 | return pcmcia_register_driver(&tc574_driver); | |
1218 | } | |
1219 | ||
1220 | static void __exit exit_tc574(void) | |
1221 | { | |
1222 | pcmcia_unregister_driver(&tc574_driver); | |
1da177e4 LT |
1223 | } |
1224 | ||
1225 | module_init(init_tc574); | |
1226 | module_exit(exit_tc574); |