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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> | |
88 | ||
89 | #include <pcmcia/version.h> | |
90 | #include <pcmcia/cs_types.h> | |
91 | #include <pcmcia/cs.h> | |
92 | #include <pcmcia/cistpl.h> | |
93 | #include <pcmcia/cisreg.h> | |
94 | #include <pcmcia/ciscode.h> | |
95 | #include <pcmcia/ds.h> | |
96 | #include <pcmcia/mem_op.h> | |
97 | ||
98 | #include <asm/uaccess.h> | |
99 | #include <asm/io.h> | |
100 | #include <asm/system.h> | |
101 | ||
102 | /*====================================================================*/ | |
103 | ||
104 | /* Module parameters */ | |
105 | ||
106 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
107 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); | |
108 | MODULE_LICENSE("GPL"); | |
109 | ||
110 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
111 | ||
112 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
113 | INT_MODULE_PARM(max_interrupt_work, 32); | |
114 | ||
115 | /* Force full duplex modes? */ | |
116 | INT_MODULE_PARM(full_duplex, 0); | |
117 | ||
118 | /* Autodetect link polarity reversal? */ | |
119 | INT_MODULE_PARM(auto_polarity, 1); | |
120 | ||
121 | #ifdef PCMCIA_DEBUG | |
122 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); | |
123 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
124 | static char *version = | |
125 | "3c574_cs.c 1.65ac1 2003/04/07 Donald Becker/David Hinds, becker@scyld.com.\n"; | |
126 | #else | |
127 | #define DEBUG(n, args...) | |
128 | #endif | |
129 | ||
130 | /*====================================================================*/ | |
131 | ||
132 | /* Time in jiffies before concluding the transmitter is hung. */ | |
133 | #define TX_TIMEOUT ((800*HZ)/1000) | |
134 | ||
135 | /* To minimize the size of the driver source and make the driver more | |
136 | readable not all constants are symbolically defined. | |
137 | You'll need the manual if you want to understand driver details anyway. */ | |
138 | /* Offsets from base I/O address. */ | |
139 | #define EL3_DATA 0x00 | |
140 | #define EL3_CMD 0x0e | |
141 | #define EL3_STATUS 0x0e | |
142 | ||
143 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
144 | ||
145 | /* The top five bits written to EL3_CMD are a command, the lower | |
146 | 11 bits are the parameter, if applicable. */ | |
147 | enum el3_cmds { | |
148 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, | |
149 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, | |
150 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, | |
151 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, | |
152 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, | |
153 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, | |
154 | StatsDisable = 22<<11, StopCoax = 23<<11, | |
155 | }; | |
156 | ||
157 | enum elxl_status { | |
158 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, | |
159 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, | |
160 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; | |
161 | ||
162 | /* The SetRxFilter command accepts the following classes: */ | |
163 | enum RxFilter { | |
164 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 | |
165 | }; | |
166 | ||
167 | enum Window0 { | |
168 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ | |
169 | IntrStatus=0x0E, /* Valid in all windows. */ | |
170 | }; | |
171 | /* These assumes the larger EEPROM. */ | |
172 | enum Win0_EEPROM_cmds { | |
173 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, | |
174 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ | |
175 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ | |
176 | }; | |
177 | ||
178 | /* Register window 1 offsets, the window used in normal operation. | |
179 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. | |
180 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ | |
181 | enum Window1 { | |
182 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, | |
183 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, | |
184 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ | |
185 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, | |
186 | }; | |
187 | ||
188 | enum Window3 { /* Window 3: MAC/config bits. */ | |
189 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, | |
190 | }; | |
191 | union wn3_config { | |
192 | int i; | |
193 | struct w3_config_fields { | |
194 | unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2; | |
195 | int pad8:8; | |
196 | unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1; | |
197 | int pad24:7; | |
198 | } u; | |
199 | }; | |
200 | ||
201 | enum Window4 { /* Window 4: Xcvr/media bits. */ | |
202 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, | |
203 | }; | |
204 | ||
205 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ | |
206 | ||
207 | struct el3_private { | |
208 | dev_link_t link; | |
209 | dev_node_t node; | |
210 | struct net_device_stats stats; | |
211 | u16 advertising, partner; /* NWay media advertisement */ | |
212 | unsigned char phys; /* MII device address */ | |
213 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ | |
214 | /* for transceiver monitoring */ | |
215 | struct timer_list media; | |
216 | unsigned short media_status; | |
217 | unsigned short fast_poll; | |
218 | unsigned long last_irq; | |
219 | spinlock_t window_lock; /* Guards the Window selection */ | |
220 | }; | |
221 | ||
222 | /* Set iff a MII transceiver on any interface requires mdio preamble. | |
223 | This only set with the original DP83840 on older 3c905 boards, so the extra | |
224 | code size of a per-interface flag is not worthwhile. */ | |
225 | static char mii_preamble_required = 0; | |
226 | ||
227 | /* Index of functions. */ | |
228 | ||
229 | static void tc574_config(dev_link_t *link); | |
230 | static void tc574_release(dev_link_t *link); | |
231 | static int tc574_event(event_t event, int priority, | |
232 | event_callback_args_t *args); | |
233 | ||
234 | static void mdio_sync(kio_addr_t ioaddr, int bits); | |
235 | static int mdio_read(kio_addr_t ioaddr, int phy_id, int location); | |
236 | static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value); | |
237 | static unsigned short read_eeprom(kio_addr_t ioaddr, int index); | |
238 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); | |
239 | ||
240 | static void tc574_reset(struct net_device *dev); | |
241 | static void media_check(unsigned long arg); | |
242 | static int el3_open(struct net_device *dev); | |
243 | static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
244 | static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
245 | static void update_stats(struct net_device *dev); | |
246 | static struct net_device_stats *el3_get_stats(struct net_device *dev); | |
247 | static int el3_rx(struct net_device *dev, int worklimit); | |
248 | static int el3_close(struct net_device *dev); | |
249 | static void el3_tx_timeout(struct net_device *dev); | |
250 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
251 | static struct ethtool_ops netdev_ethtool_ops; | |
252 | static void set_rx_mode(struct net_device *dev); | |
253 | ||
254 | static dev_info_t dev_info = "3c574_cs"; | |
255 | ||
256 | static dev_link_t *tc574_attach(void); | |
257 | static void tc574_detach(dev_link_t *); | |
258 | ||
259 | static dev_link_t *dev_list; | |
260 | ||
261 | /* | |
262 | tc574_attach() creates an "instance" of the driver, allocating | |
263 | local data structures for one device. The device is registered | |
264 | with Card Services. | |
265 | */ | |
266 | ||
267 | static dev_link_t *tc574_attach(void) | |
268 | { | |
269 | struct el3_private *lp; | |
270 | client_reg_t client_reg; | |
271 | dev_link_t *link; | |
272 | struct net_device *dev; | |
273 | int ret; | |
274 | ||
275 | DEBUG(0, "3c574_attach()\n"); | |
276 | ||
277 | /* Create the PC card device object. */ | |
278 | dev = alloc_etherdev(sizeof(struct el3_private)); | |
279 | if (!dev) | |
280 | return NULL; | |
281 | lp = netdev_priv(dev); | |
282 | link = &lp->link; | |
283 | link->priv = dev; | |
284 | ||
285 | spin_lock_init(&lp->window_lock); | |
286 | link->io.NumPorts1 = 32; | |
287 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; | |
288 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
289 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
290 | link->irq.Handler = &el3_interrupt; | |
291 | link->irq.Instance = dev; | |
292 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
293 | link->conf.Vcc = 50; | |
294 | link->conf.IntType = INT_MEMORY_AND_IO; | |
295 | link->conf.ConfigIndex = 1; | |
296 | link->conf.Present = PRESENT_OPTION; | |
297 | ||
298 | /* The EL3-specific entries in the device structure. */ | |
299 | dev->hard_start_xmit = &el3_start_xmit; | |
300 | dev->get_stats = &el3_get_stats; | |
301 | dev->do_ioctl = &el3_ioctl; | |
302 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); | |
303 | dev->set_multicast_list = &set_rx_mode; | |
304 | dev->open = &el3_open; | |
305 | dev->stop = &el3_close; | |
306 | #ifdef HAVE_TX_TIMEOUT | |
307 | dev->tx_timeout = el3_tx_timeout; | |
308 | dev->watchdog_timeo = TX_TIMEOUT; | |
309 | #endif | |
310 | ||
311 | /* Register with Card Services */ | |
312 | link->next = dev_list; | |
313 | dev_list = link; | |
314 | client_reg.dev_info = &dev_info; | |
315 | client_reg.EventMask = | |
316 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
317 | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | | |
318 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
319 | client_reg.event_handler = &tc574_event; | |
320 | client_reg.Version = 0x0210; | |
321 | client_reg.event_callback_args.client_data = link; | |
322 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
323 | if (ret != 0) { | |
324 | cs_error(link->handle, RegisterClient, ret); | |
325 | tc574_detach(link); | |
326 | return NULL; | |
327 | } | |
328 | ||
329 | return link; | |
330 | } /* tc574_attach */ | |
331 | ||
332 | /* | |
333 | ||
334 | This deletes a driver "instance". The device is de-registered | |
335 | with Card Services. If it has been released, all local data | |
336 | structures are freed. Otherwise, the structures will be freed | |
337 | when the device is released. | |
338 | ||
339 | */ | |
340 | ||
341 | static void tc574_detach(dev_link_t *link) | |
342 | { | |
343 | struct net_device *dev = link->priv; | |
344 | dev_link_t **linkp; | |
345 | ||
346 | DEBUG(0, "3c574_detach(0x%p)\n", link); | |
347 | ||
348 | /* Locate device structure */ | |
349 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
350 | if (*linkp == link) break; | |
351 | if (*linkp == NULL) | |
352 | return; | |
353 | ||
354 | if (link->dev) | |
355 | unregister_netdev(dev); | |
356 | ||
357 | if (link->state & DEV_CONFIG) | |
358 | tc574_release(link); | |
359 | ||
360 | if (link->handle) | |
361 | pcmcia_deregister_client(link->handle); | |
362 | ||
363 | /* Unlink device structure, free bits */ | |
364 | *linkp = link->next; | |
365 | free_netdev(dev); | |
366 | } /* tc574_detach */ | |
367 | ||
368 | /* | |
369 | tc574_config() is scheduled to run after a CARD_INSERTION event | |
370 | is received, to configure the PCMCIA socket, and to make the | |
371 | ethernet device available to the system. | |
372 | */ | |
373 | ||
374 | #define CS_CHECK(fn, ret) \ | |
375 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
376 | ||
377 | static char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; | |
378 | ||
379 | static void tc574_config(dev_link_t *link) | |
380 | { | |
381 | client_handle_t handle = link->handle; | |
382 | struct net_device *dev = link->priv; | |
383 | struct el3_private *lp = netdev_priv(dev); | |
384 | tuple_t tuple; | |
385 | cisparse_t parse; | |
386 | unsigned short buf[32]; | |
387 | int last_fn, last_ret, i, j; | |
388 | kio_addr_t ioaddr; | |
389 | u16 *phys_addr; | |
390 | char *cardname; | |
391 | union wn3_config config; | |
392 | ||
393 | phys_addr = (u16 *)dev->dev_addr; | |
394 | ||
395 | DEBUG(0, "3c574_config(0x%p)\n", link); | |
396 | ||
397 | tuple.Attributes = 0; | |
398 | tuple.DesiredTuple = CISTPL_CONFIG; | |
399 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
400 | tuple.TupleData = (cisdata_t *)buf; | |
401 | tuple.TupleDataMax = 64; | |
402 | tuple.TupleOffset = 0; | |
403 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
404 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
405 | link->conf.ConfigBase = parse.config.base; | |
406 | link->conf.Present = parse.config.rmask[0]; | |
407 | ||
408 | /* Configure card */ | |
409 | link->state |= DEV_CONFIG; | |
410 | ||
411 | link->io.IOAddrLines = 16; | |
412 | for (i = j = 0; j < 0x400; j += 0x20) { | |
413 | link->io.BasePort1 = j ^ 0x300; | |
414 | i = pcmcia_request_io(link->handle, &link->io); | |
415 | if (i == CS_SUCCESS) break; | |
416 | } | |
417 | if (i != CS_SUCCESS) { | |
418 | cs_error(link->handle, RequestIO, i); | |
419 | goto failed; | |
420 | } | |
421 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq)); | |
422 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf)); | |
423 | ||
424 | dev->irq = link->irq.AssignedIRQ; | |
425 | dev->base_addr = link->io.BasePort1; | |
426 | ||
427 | ioaddr = dev->base_addr; | |
428 | ||
429 | /* The 3c574 normally uses an EEPROM for configuration info, including | |
430 | the hardware address. The future products may include a modem chip | |
431 | and put the address in the CIS. */ | |
432 | tuple.DesiredTuple = 0x88; | |
433 | if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) { | |
434 | pcmcia_get_tuple_data(handle, &tuple); | |
435 | for (i = 0; i < 3; i++) | |
436 | phys_addr[i] = htons(buf[i]); | |
437 | } else { | |
438 | EL3WINDOW(0); | |
439 | for (i = 0; i < 3; i++) | |
440 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); | |
441 | if (phys_addr[0] == 0x6060) { | |
442 | printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx" | |
443 | "-0x%03lx\n", dev->base_addr, dev->base_addr+15); | |
444 | goto failed; | |
445 | } | |
446 | } | |
447 | tuple.DesiredTuple = CISTPL_VERS_1; | |
448 | if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS && | |
449 | pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS && | |
450 | pcmcia_parse_tuple(handle, &tuple, &parse) == CS_SUCCESS) { | |
451 | cardname = parse.version_1.str + parse.version_1.ofs[1]; | |
452 | } else | |
453 | cardname = "3Com 3c574"; | |
454 | ||
455 | { | |
456 | u_char mcr; | |
457 | outw(2<<11, ioaddr + RunnerRdCtrl); | |
458 | mcr = inb(ioaddr + 2); | |
459 | outw(0<<11, ioaddr + RunnerRdCtrl); | |
460 | printk(KERN_INFO " ASIC rev %d,", mcr>>3); | |
461 | EL3WINDOW(3); | |
462 | config.i = inl(ioaddr + Wn3_Config); | |
463 | lp->default_media = config.u.xcvr; | |
464 | lp->autoselect = config.u.autoselect; | |
465 | } | |
466 | ||
467 | init_timer(&lp->media); | |
468 | ||
469 | { | |
470 | int phy; | |
471 | ||
472 | /* Roadrunner only: Turn on the MII transceiver */ | |
473 | outw(0x8040, ioaddr + Wn3_Options); | |
474 | mdelay(1); | |
475 | outw(0xc040, ioaddr + Wn3_Options); | |
476 | tc574_wait_for_completion(dev, TxReset); | |
477 | tc574_wait_for_completion(dev, RxReset); | |
478 | mdelay(1); | |
479 | outw(0x8040, ioaddr + Wn3_Options); | |
480 | ||
481 | EL3WINDOW(4); | |
482 | for (phy = 1; phy <= 32; phy++) { | |
483 | int mii_status; | |
484 | mdio_sync(ioaddr, 32); | |
485 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); | |
486 | if (mii_status != 0xffff) { | |
487 | lp->phys = phy & 0x1f; | |
488 | DEBUG(0, " MII transceiver at index %d, status %x.\n", | |
489 | phy, mii_status); | |
490 | if ((mii_status & 0x0040) == 0) | |
491 | mii_preamble_required = 1; | |
492 | break; | |
493 | } | |
494 | } | |
495 | if (phy > 32) { | |
496 | printk(KERN_NOTICE " No MII transceivers found!\n"); | |
497 | goto failed; | |
498 | } | |
499 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; | |
500 | mdio_write(ioaddr, lp->phys, 16, i); | |
501 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); | |
502 | if (full_duplex) { | |
503 | /* Only advertise the FD media types. */ | |
504 | lp->advertising &= ~0x02a0; | |
505 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
506 | } | |
507 | } | |
508 | ||
509 | link->state &= ~DEV_CONFIG_PENDING; | |
510 | link->dev = &lp->node; | |
511 | SET_NETDEV_DEV(dev, &handle_to_dev(handle)); | |
512 | ||
513 | if (register_netdev(dev) != 0) { | |
514 | printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n"); | |
515 | link->dev = NULL; | |
516 | goto failed; | |
517 | } | |
518 | ||
519 | strcpy(lp->node.dev_name, dev->name); | |
520 | ||
521 | printk(KERN_INFO "%s: %s at io %#3lx, irq %d, hw_addr ", | |
522 | dev->name, cardname, dev->base_addr, dev->irq); | |
523 | for (i = 0; i < 6; i++) | |
524 | printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : ".\n")); | |
525 | printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n", | |
526 | 8 << config.u.ram_size, ram_split[config.u.ram_split], | |
527 | config.u.autoselect ? "autoselect " : ""); | |
528 | ||
529 | return; | |
530 | ||
531 | cs_failed: | |
532 | cs_error(link->handle, last_fn, last_ret); | |
533 | failed: | |
534 | tc574_release(link); | |
535 | return; | |
536 | ||
537 | } /* tc574_config */ | |
538 | ||
539 | /* | |
540 | After a card is removed, tc574_release() will unregister the net | |
541 | device, and release the PCMCIA configuration. If the device is | |
542 | still open, this will be postponed until it is closed. | |
543 | */ | |
544 | ||
545 | static void tc574_release(dev_link_t *link) | |
546 | { | |
547 | DEBUG(0, "3c574_release(0x%p)\n", link); | |
548 | ||
549 | pcmcia_release_configuration(link->handle); | |
550 | pcmcia_release_io(link->handle, &link->io); | |
551 | pcmcia_release_irq(link->handle, &link->irq); | |
552 | ||
553 | link->state &= ~DEV_CONFIG; | |
554 | } | |
555 | ||
556 | /* | |
557 | The card status event handler. Mostly, this schedules other | |
558 | stuff to run after an event is received. A CARD_REMOVAL event | |
559 | also sets some flags to discourage the net drivers from trying | |
560 | to talk to the card any more. | |
561 | */ | |
562 | ||
563 | static int tc574_event(event_t event, int priority, | |
564 | event_callback_args_t *args) | |
565 | { | |
566 | dev_link_t *link = args->client_data; | |
567 | struct net_device *dev = link->priv; | |
568 | ||
569 | DEBUG(1, "3c574_event(0x%06x)\n", event); | |
570 | ||
571 | switch (event) { | |
572 | case CS_EVENT_CARD_REMOVAL: | |
573 | link->state &= ~DEV_PRESENT; | |
574 | if (link->state & DEV_CONFIG) | |
575 | netif_device_detach(dev); | |
576 | break; | |
577 | case CS_EVENT_CARD_INSERTION: | |
578 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
579 | tc574_config(link); | |
580 | break; | |
581 | case CS_EVENT_PM_SUSPEND: | |
582 | link->state |= DEV_SUSPEND; | |
583 | /* Fall through... */ | |
584 | case CS_EVENT_RESET_PHYSICAL: | |
585 | if (link->state & DEV_CONFIG) { | |
586 | if (link->open) | |
587 | netif_device_detach(dev); | |
588 | pcmcia_release_configuration(link->handle); | |
589 | } | |
590 | break; | |
591 | case CS_EVENT_PM_RESUME: | |
592 | link->state &= ~DEV_SUSPEND; | |
593 | /* Fall through... */ | |
594 | case CS_EVENT_CARD_RESET: | |
595 | if (link->state & DEV_CONFIG) { | |
596 | pcmcia_request_configuration(link->handle, &link->conf); | |
597 | if (link->open) { | |
598 | tc574_reset(dev); | |
599 | netif_device_attach(dev); | |
600 | } | |
601 | } | |
602 | break; | |
603 | } | |
604 | return 0; | |
605 | } /* tc574_event */ | |
606 | ||
607 | static void dump_status(struct net_device *dev) | |
608 | { | |
609 | kio_addr_t ioaddr = dev->base_addr; | |
610 | EL3WINDOW(1); | |
611 | printk(KERN_INFO " irq status %04x, rx status %04x, tx status " | |
612 | "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS), | |
613 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), | |
614 | inw(ioaddr+TxFree)); | |
615 | EL3WINDOW(4); | |
616 | printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x" | |
617 | " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06), | |
618 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); | |
619 | EL3WINDOW(1); | |
620 | } | |
621 | ||
622 | /* | |
623 | Use this for commands that may take time to finish | |
624 | */ | |
625 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) | |
626 | { | |
627 | int i = 1500; | |
628 | outw(cmd, dev->base_addr + EL3_CMD); | |
629 | while (--i > 0) | |
630 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; | |
631 | if (i == 0) | |
632 | printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd); | |
633 | } | |
634 | ||
635 | /* Read a word from the EEPROM using the regular EEPROM access register. | |
636 | Assume that we are in register window zero. | |
637 | */ | |
638 | static unsigned short read_eeprom(kio_addr_t ioaddr, int index) | |
639 | { | |
640 | int timer; | |
641 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); | |
642 | /* Pause for at least 162 usec for the read to take place. */ | |
643 | for (timer = 1620; timer >= 0; timer--) { | |
644 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) | |
645 | break; | |
646 | } | |
647 | return inw(ioaddr + Wn0EepromData); | |
648 | } | |
649 | ||
650 | /* MII transceiver control section. | |
651 | Read and write the MII registers using software-generated serial | |
652 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
653 | for details. | |
654 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the | |
655 | slow PC card interface. */ | |
656 | ||
657 | #define MDIO_SHIFT_CLK 0x01 | |
658 | #define MDIO_DIR_WRITE 0x04 | |
659 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) | |
660 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) | |
661 | #define MDIO_DATA_READ 0x02 | |
662 | #define MDIO_ENB_IN 0x00 | |
663 | ||
664 | /* Generate the preamble required for initial synchronization and | |
665 | a few older transceivers. */ | |
666 | static void mdio_sync(kio_addr_t ioaddr, int bits) | |
667 | { | |
668 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; | |
669 | ||
670 | /* Establish sync by sending at least 32 logic ones. */ | |
671 | while (-- bits >= 0) { | |
672 | outw(MDIO_DATA_WRITE1, mdio_addr); | |
673 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); | |
674 | } | |
675 | } | |
676 | ||
677 | static int mdio_read(kio_addr_t ioaddr, int phy_id, int location) | |
678 | { | |
679 | int i; | |
680 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
681 | unsigned int retval = 0; | |
682 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; | |
683 | ||
684 | if (mii_preamble_required) | |
685 | mdio_sync(ioaddr, 32); | |
686 | ||
687 | /* Shift the read command bits out. */ | |
688 | for (i = 14; i >= 0; i--) { | |
689 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
690 | outw(dataval, mdio_addr); | |
691 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
692 | } | |
693 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
694 | for (i = 19; i > 0; i--) { | |
695 | outw(MDIO_ENB_IN, mdio_addr); | |
696 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); | |
697 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
698 | } | |
699 | return (retval>>1) & 0xffff; | |
700 | } | |
701 | ||
702 | static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value) | |
703 | { | |
704 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; | |
705 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; | |
706 | int i; | |
707 | ||
708 | if (mii_preamble_required) | |
709 | mdio_sync(ioaddr, 32); | |
710 | ||
711 | /* Shift the command bits out. */ | |
712 | for (i = 31; i >= 0; i--) { | |
713 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
714 | outw(dataval, mdio_addr); | |
715 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
716 | } | |
717 | /* Leave the interface idle. */ | |
718 | for (i = 1; i >= 0; i--) { | |
719 | outw(MDIO_ENB_IN, mdio_addr); | |
720 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
721 | } | |
722 | ||
723 | return; | |
724 | } | |
725 | ||
726 | /* Reset and restore all of the 3c574 registers. */ | |
727 | static void tc574_reset(struct net_device *dev) | |
728 | { | |
729 | struct el3_private *lp = netdev_priv(dev); | |
730 | int i; | |
731 | kio_addr_t ioaddr = dev->base_addr; | |
732 | unsigned long flags; | |
733 | ||
734 | tc574_wait_for_completion(dev, TotalReset|0x10); | |
735 | ||
736 | spin_lock_irqsave(&lp->window_lock, flags); | |
737 | /* Clear any transactions in progress. */ | |
738 | outw(0, ioaddr + RunnerWrCtrl); | |
739 | outw(0, ioaddr + RunnerRdCtrl); | |
740 | ||
741 | /* Set the station address and mask. */ | |
742 | EL3WINDOW(2); | |
743 | for (i = 0; i < 6; i++) | |
744 | outb(dev->dev_addr[i], ioaddr + i); | |
745 | for (; i < 12; i+=2) | |
746 | outw(0, ioaddr + i); | |
747 | ||
748 | /* Reset config options */ | |
749 | EL3WINDOW(3); | |
750 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
751 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, | |
752 | ioaddr + Wn3_Config); | |
753 | /* Roadrunner only: Turn on the MII transceiver. */ | |
754 | outw(0x8040, ioaddr + Wn3_Options); | |
755 | mdelay(1); | |
756 | outw(0xc040, ioaddr + Wn3_Options); | |
757 | EL3WINDOW(1); | |
758 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
759 | ||
760 | tc574_wait_for_completion(dev, TxReset); | |
761 | tc574_wait_for_completion(dev, RxReset); | |
762 | mdelay(1); | |
763 | spin_lock_irqsave(&lp->window_lock, flags); | |
764 | EL3WINDOW(3); | |
765 | outw(0x8040, ioaddr + Wn3_Options); | |
766 | ||
767 | /* Switch to the stats window, and clear all stats by reading. */ | |
768 | outw(StatsDisable, ioaddr + EL3_CMD); | |
769 | EL3WINDOW(6); | |
770 | for (i = 0; i < 10; i++) | |
771 | inb(ioaddr + i); | |
772 | inw(ioaddr + 10); | |
773 | inw(ioaddr + 12); | |
774 | EL3WINDOW(4); | |
775 | inb(ioaddr + 12); | |
776 | inb(ioaddr + 13); | |
777 | ||
778 | /* .. enable any extra statistics bits.. */ | |
779 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
780 | ||
781 | EL3WINDOW(1); | |
782 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
783 | ||
784 | /* .. re-sync MII and re-fill what NWay is advertising. */ | |
785 | mdio_sync(ioaddr, 32); | |
786 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
787 | if (!auto_polarity) { | |
788 | /* works for TDK 78Q2120 series MII's */ | |
789 | int i = mdio_read(ioaddr, lp->phys, 16) | 0x20; | |
790 | mdio_write(ioaddr, lp->phys, 16, i); | |
791 | } | |
792 | ||
793 | spin_lock_irqsave(&lp->window_lock, flags); | |
794 | /* Switch to register set 1 for normal use, just for TxFree. */ | |
795 | set_rx_mode(dev); | |
796 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
797 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
798 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
799 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
800 | /* Allow status bits to be seen. */ | |
801 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); | |
802 | /* Ack all pending events, and set active indicator mask. */ | |
803 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
804 | ioaddr + EL3_CMD); | |
805 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
806 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); | |
807 | } | |
808 | ||
809 | static int el3_open(struct net_device *dev) | |
810 | { | |
811 | struct el3_private *lp = netdev_priv(dev); | |
812 | dev_link_t *link = &lp->link; | |
813 | ||
814 | if (!DEV_OK(link)) | |
815 | return -ENODEV; | |
816 | ||
817 | link->open++; | |
818 | netif_start_queue(dev); | |
819 | ||
820 | tc574_reset(dev); | |
821 | lp->media.function = &media_check; | |
822 | lp->media.data = (unsigned long) dev; | |
823 | lp->media.expires = jiffies + HZ; | |
824 | add_timer(&lp->media); | |
825 | ||
826 | DEBUG(2, "%s: opened, status %4.4x.\n", | |
827 | dev->name, inw(dev->base_addr + EL3_STATUS)); | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
832 | static void el3_tx_timeout(struct net_device *dev) | |
833 | { | |
834 | struct el3_private *lp = netdev_priv(dev); | |
835 | kio_addr_t ioaddr = dev->base_addr; | |
836 | ||
837 | printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name); | |
838 | dump_status(dev); | |
839 | lp->stats.tx_errors++; | |
840 | dev->trans_start = jiffies; | |
841 | /* Issue TX_RESET and TX_START commands. */ | |
842 | tc574_wait_for_completion(dev, TxReset); | |
843 | outw(TxEnable, ioaddr + EL3_CMD); | |
844 | netif_wake_queue(dev); | |
845 | } | |
846 | ||
847 | static void pop_tx_status(struct net_device *dev) | |
848 | { | |
849 | struct el3_private *lp = netdev_priv(dev); | |
850 | kio_addr_t ioaddr = dev->base_addr; | |
851 | int i; | |
852 | ||
853 | /* Clear the Tx status stack. */ | |
854 | for (i = 32; i > 0; i--) { | |
855 | u_char tx_status = inb(ioaddr + TxStatus); | |
856 | if (!(tx_status & 0x84)) | |
857 | break; | |
858 | /* reset transmitter on jabber error or underrun */ | |
859 | if (tx_status & 0x30) | |
860 | tc574_wait_for_completion(dev, TxReset); | |
861 | if (tx_status & 0x38) { | |
862 | DEBUG(1, "%s: transmit error: status 0x%02x\n", | |
863 | dev->name, tx_status); | |
864 | outw(TxEnable, ioaddr + EL3_CMD); | |
865 | lp->stats.tx_aborted_errors++; | |
866 | } | |
867 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
868 | } | |
869 | } | |
870 | ||
871 | static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
872 | { | |
873 | kio_addr_t ioaddr = dev->base_addr; | |
874 | struct el3_private *lp = netdev_priv(dev); | |
875 | unsigned long flags; | |
876 | ||
877 | DEBUG(3, "%s: el3_start_xmit(length = %ld) called, " | |
878 | "status %4.4x.\n", dev->name, (long)skb->len, | |
879 | inw(ioaddr + EL3_STATUS)); | |
880 | ||
881 | spin_lock_irqsave(&lp->window_lock, flags); | |
882 | outw(skb->len, ioaddr + TX_FIFO); | |
883 | outw(0, ioaddr + TX_FIFO); | |
884 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); | |
885 | ||
886 | dev->trans_start = jiffies; | |
887 | ||
888 | /* TxFree appears only in Window 1, not offset 0x1c. */ | |
889 | if (inw(ioaddr + TxFree) <= 1536) { | |
890 | netif_stop_queue(dev); | |
891 | /* Interrupt us when the FIFO has room for max-sized packet. | |
892 | The threshold is in units of dwords. */ | |
893 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); | |
894 | } | |
895 | ||
896 | pop_tx_status(dev); | |
897 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
898 | dev_kfree_skb(skb); | |
899 | return 0; | |
900 | } | |
901 | ||
902 | /* The EL3 interrupt handler. */ | |
903 | static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
904 | { | |
905 | struct net_device *dev = (struct net_device *) dev_id; | |
906 | struct el3_private *lp = netdev_priv(dev); | |
907 | kio_addr_t ioaddr; | |
908 | unsigned status; | |
909 | int work_budget = max_interrupt_work; | |
910 | int handled = 0; | |
911 | ||
912 | if (!netif_device_present(dev)) | |
913 | return IRQ_NONE; | |
914 | ioaddr = dev->base_addr; | |
915 | ||
916 | DEBUG(3, "%s: interrupt, status %4.4x.\n", | |
917 | dev->name, inw(ioaddr + EL3_STATUS)); | |
918 | ||
919 | spin_lock(&lp->window_lock); | |
920 | ||
921 | while ((status = inw(ioaddr + EL3_STATUS)) & | |
922 | (IntLatch | RxComplete | RxEarly | StatsFull)) { | |
923 | if (!netif_device_present(dev) || | |
924 | ((status & 0xe000) != 0x2000)) { | |
925 | DEBUG(1, "%s: Interrupt from dead card\n", dev->name); | |
926 | break; | |
927 | } | |
928 | ||
929 | handled = 1; | |
930 | ||
931 | if (status & RxComplete) | |
932 | work_budget = el3_rx(dev, work_budget); | |
933 | ||
934 | if (status & TxAvailable) { | |
935 | DEBUG(3, " TX room bit was handled.\n"); | |
936 | /* There's room in the FIFO for a full-sized packet. */ | |
937 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
938 | netif_wake_queue(dev); | |
939 | } | |
940 | ||
941 | if (status & TxComplete) | |
942 | pop_tx_status(dev); | |
943 | ||
944 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
945 | /* Handle all uncommon interrupts. */ | |
946 | if (status & StatsFull) | |
947 | update_stats(dev); | |
948 | if (status & RxEarly) { | |
949 | work_budget = el3_rx(dev, work_budget); | |
950 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
951 | } | |
952 | if (status & AdapterFailure) { | |
953 | u16 fifo_diag; | |
954 | EL3WINDOW(4); | |
955 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); | |
956 | EL3WINDOW(1); | |
957 | printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic" | |
958 | " register %04x.\n", dev->name, fifo_diag); | |
959 | if (fifo_diag & 0x0400) { | |
960 | /* Tx overrun */ | |
961 | tc574_wait_for_completion(dev, TxReset); | |
962 | outw(TxEnable, ioaddr + EL3_CMD); | |
963 | } | |
964 | if (fifo_diag & 0x2000) { | |
965 | /* Rx underrun */ | |
966 | tc574_wait_for_completion(dev, RxReset); | |
967 | set_rx_mode(dev); | |
968 | outw(RxEnable, ioaddr + EL3_CMD); | |
969 | } | |
970 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); | |
971 | } | |
972 | } | |
973 | ||
974 | if (--work_budget < 0) { | |
975 | DEBUG(0, "%s: Too much work in interrupt, " | |
976 | "status %4.4x.\n", dev->name, status); | |
977 | /* Clear all interrupts */ | |
978 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); | |
979 | break; | |
980 | } | |
981 | /* Acknowledge the IRQ. */ | |
982 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
983 | } | |
984 | ||
985 | DEBUG(3, "%s: exiting interrupt, status %4.4x.\n", | |
986 | dev->name, inw(ioaddr + EL3_STATUS)); | |
987 | ||
988 | spin_unlock(&lp->window_lock); | |
989 | return IRQ_RETVAL(handled); | |
990 | } | |
991 | ||
992 | /* | |
993 | This timer serves two purposes: to check for missed interrupts | |
994 | (and as a last resort, poll the NIC for events), and to monitor | |
995 | the MII, reporting changes in cable status. | |
996 | */ | |
997 | static void media_check(unsigned long arg) | |
998 | { | |
999 | struct net_device *dev = (struct net_device *) arg; | |
1000 | struct el3_private *lp = netdev_priv(dev); | |
1001 | kio_addr_t ioaddr = dev->base_addr; | |
1002 | unsigned long flags; | |
1003 | unsigned short /* cable, */ media, partner; | |
1004 | ||
1005 | if (!netif_device_present(dev)) | |
1006 | goto reschedule; | |
1007 | ||
1008 | /* Check for pending interrupt with expired latency timer: with | |
1009 | this, we can limp along even if the interrupt is blocked */ | |
1010 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { | |
1011 | if (!lp->fast_poll) | |
1012 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); | |
1013 | el3_interrupt(dev->irq, lp, NULL); | |
1014 | lp->fast_poll = HZ; | |
1015 | } | |
1016 | if (lp->fast_poll) { | |
1017 | lp->fast_poll--; | |
1018 | lp->media.expires = jiffies + 2*HZ/100; | |
1019 | add_timer(&lp->media); | |
1020 | return; | |
1021 | } | |
1022 | ||
1023 | spin_lock_irqsave(&lp->window_lock, flags); | |
1024 | EL3WINDOW(4); | |
1025 | media = mdio_read(ioaddr, lp->phys, 1); | |
1026 | partner = mdio_read(ioaddr, lp->phys, 5); | |
1027 | EL3WINDOW(1); | |
1028 | ||
1029 | if (media != lp->media_status) { | |
1030 | if ((media ^ lp->media_status) & 0x0004) | |
1031 | printk(KERN_INFO "%s: %s link beat\n", dev->name, | |
1032 | (lp->media_status & 0x0004) ? "lost" : "found"); | |
1033 | if ((media ^ lp->media_status) & 0x0020) { | |
1034 | lp->partner = 0; | |
1035 | if (lp->media_status & 0x0020) { | |
1036 | printk(KERN_INFO "%s: autonegotiation restarted\n", | |
1037 | dev->name); | |
1038 | } else if (partner) { | |
1039 | partner &= lp->advertising; | |
1040 | lp->partner = partner; | |
1041 | printk(KERN_INFO "%s: autonegotiation complete: " | |
1042 | "%sbaseT-%cD selected\n", dev->name, | |
1043 | ((partner & 0x0180) ? "100" : "10"), | |
1044 | ((partner & 0x0140) ? 'F' : 'H')); | |
1045 | } else { | |
1046 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", | |
1047 | dev->name); | |
1048 | } | |
1049 | ||
1050 | EL3WINDOW(3); | |
1051 | outb((partner & 0x0140 ? 0x20 : 0) | | |
1052 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
1053 | EL3WINDOW(1); | |
1054 | ||
1055 | } | |
1056 | if (media & 0x0010) | |
1057 | printk(KERN_INFO "%s: remote fault detected\n", | |
1058 | dev->name); | |
1059 | if (media & 0x0002) | |
1060 | printk(KERN_INFO "%s: jabber detected\n", dev->name); | |
1061 | lp->media_status = media; | |
1062 | } | |
1063 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1064 | ||
1065 | reschedule: | |
1066 | lp->media.expires = jiffies + HZ; | |
1067 | add_timer(&lp->media); | |
1068 | } | |
1069 | ||
1070 | static struct net_device_stats *el3_get_stats(struct net_device *dev) | |
1071 | { | |
1072 | struct el3_private *lp = netdev_priv(dev); | |
1073 | ||
1074 | if (netif_device_present(dev)) { | |
1075 | unsigned long flags; | |
1076 | spin_lock_irqsave(&lp->window_lock, flags); | |
1077 | update_stats(dev); | |
1078 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1079 | } | |
1080 | return &lp->stats; | |
1081 | } | |
1082 | ||
1083 | /* Update statistics. | |
1084 | Suprisingly this need not be run single-threaded, but it effectively is. | |
1085 | The counters clear when read, so the adds must merely be atomic. | |
1086 | */ | |
1087 | static void update_stats(struct net_device *dev) | |
1088 | { | |
1089 | struct el3_private *lp = netdev_priv(dev); | |
1090 | kio_addr_t ioaddr = dev->base_addr; | |
1091 | u8 rx, tx, up; | |
1092 | ||
1093 | DEBUG(2, "%s: updating the statistics.\n", dev->name); | |
1094 | ||
1095 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ | |
1096 | return; | |
1097 | ||
1098 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ | |
1099 | /* Switch to the stats window, and read everything. */ | |
1100 | EL3WINDOW(6); | |
1101 | lp->stats.tx_carrier_errors += inb(ioaddr + 0); | |
1102 | lp->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1103 | /* Multiple collisions. */ inb(ioaddr + 2); | |
1104 | lp->stats.collisions += inb(ioaddr + 3); | |
1105 | lp->stats.tx_window_errors += inb(ioaddr + 4); | |
1106 | lp->stats.rx_fifo_errors += inb(ioaddr + 5); | |
1107 | lp->stats.tx_packets += inb(ioaddr + 6); | |
1108 | up = inb(ioaddr + 9); | |
1109 | lp->stats.tx_packets += (up&0x30) << 4; | |
1110 | /* Rx packets */ inb(ioaddr + 7); | |
1111 | /* Tx deferrals */ inb(ioaddr + 8); | |
1112 | rx = inw(ioaddr + 10); | |
1113 | tx = inw(ioaddr + 12); | |
1114 | ||
1115 | EL3WINDOW(4); | |
1116 | /* BadSSD */ inb(ioaddr + 12); | |
1117 | up = inb(ioaddr + 13); | |
1118 | ||
1119 | lp->stats.tx_bytes += tx + ((up & 0xf0) << 12); | |
1120 | ||
1121 | EL3WINDOW(1); | |
1122 | } | |
1123 | ||
1124 | static int el3_rx(struct net_device *dev, int worklimit) | |
1125 | { | |
1126 | struct el3_private *lp = netdev_priv(dev); | |
1127 | kio_addr_t ioaddr = dev->base_addr; | |
1128 | short rx_status; | |
1129 | ||
1130 | DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", | |
1131 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); | |
1132 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && | |
1133 | (--worklimit >= 0)) { | |
1134 | if (rx_status & 0x4000) { /* Error, update stats. */ | |
1135 | short error = rx_status & 0x3800; | |
1136 | lp->stats.rx_errors++; | |
1137 | switch (error) { | |
1138 | case 0x0000: lp->stats.rx_over_errors++; break; | |
1139 | case 0x0800: lp->stats.rx_length_errors++; break; | |
1140 | case 0x1000: lp->stats.rx_frame_errors++; break; | |
1141 | case 0x1800: lp->stats.rx_length_errors++; break; | |
1142 | case 0x2000: lp->stats.rx_frame_errors++; break; | |
1143 | case 0x2800: lp->stats.rx_crc_errors++; break; | |
1144 | } | |
1145 | } else { | |
1146 | short pkt_len = rx_status & 0x7ff; | |
1147 | struct sk_buff *skb; | |
1148 | ||
1149 | skb = dev_alloc_skb(pkt_len+5); | |
1150 | ||
1151 | DEBUG(3, " Receiving packet size %d status %4.4x.\n", | |
1152 | pkt_len, rx_status); | |
1153 | if (skb != NULL) { | |
1154 | skb->dev = dev; | |
1155 | skb_reserve(skb, 2); | |
1156 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), | |
1157 | ((pkt_len+3)>>2)); | |
1158 | skb->protocol = eth_type_trans(skb, dev); | |
1159 | netif_rx(skb); | |
1160 | dev->last_rx = jiffies; | |
1161 | lp->stats.rx_packets++; | |
1162 | lp->stats.rx_bytes += pkt_len; | |
1163 | } else { | |
1164 | DEBUG(1, "%s: couldn't allocate a sk_buff of" | |
1165 | " size %d.\n", dev->name, pkt_len); | |
1166 | lp->stats.rx_dropped++; | |
1167 | } | |
1168 | } | |
1169 | tc574_wait_for_completion(dev, RxDiscard); | |
1170 | } | |
1171 | ||
1172 | return worklimit; | |
1173 | } | |
1174 | ||
1175 | static void netdev_get_drvinfo(struct net_device *dev, | |
1176 | struct ethtool_drvinfo *info) | |
1177 | { | |
1178 | strcpy(info->driver, "3c574_cs"); | |
1179 | } | |
1180 | ||
1181 | static struct ethtool_ops netdev_ethtool_ops = { | |
1182 | .get_drvinfo = netdev_get_drvinfo, | |
1183 | }; | |
1184 | ||
1185 | /* Provide ioctl() calls to examine the MII xcvr state. */ | |
1186 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1187 | { | |
1188 | struct el3_private *lp = netdev_priv(dev); | |
1189 | kio_addr_t ioaddr = dev->base_addr; | |
1190 | u16 *data = (u16 *)&rq->ifr_ifru; | |
1191 | int phy = lp->phys & 0x1f; | |
1192 | ||
1193 | DEBUG(2, "%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", | |
1194 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, | |
1195 | data[0], data[1], data[2], data[3]); | |
1196 | ||
1197 | switch(cmd) { | |
1198 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ | |
1199 | data[0] = phy; | |
1200 | case SIOCGMIIREG: /* Read the specified MII register. */ | |
1201 | { | |
1202 | int saved_window; | |
1203 | unsigned long flags; | |
1204 | ||
1205 | spin_lock_irqsave(&lp->window_lock, flags); | |
1206 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1207 | EL3WINDOW(4); | |
1208 | data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); | |
1209 | EL3WINDOW(saved_window); | |
1210 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1211 | return 0; | |
1212 | } | |
1213 | case SIOCSMIIREG: /* Write the specified MII register */ | |
1214 | { | |
1215 | int saved_window; | |
1216 | unsigned long flags; | |
1217 | ||
1218 | if (!capable(CAP_NET_ADMIN)) | |
1219 | return -EPERM; | |
1220 | spin_lock_irqsave(&lp->window_lock, flags); | |
1221 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1222 | EL3WINDOW(4); | |
1223 | mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); | |
1224 | EL3WINDOW(saved_window); | |
1225 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1226 | return 0; | |
1227 | } | |
1228 | default: | |
1229 | return -EOPNOTSUPP; | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not | |
1234 | documented. Until it is we revert to receiving all multicast frames when | |
1235 | any multicast reception is desired. | |
1236 | Note: My other drivers emit a log message whenever promiscuous mode is | |
1237 | entered to help detect password sniffers. This is less desirable on | |
1238 | typical PC card machines, so we omit the message. | |
1239 | */ | |
1240 | ||
1241 | static void set_rx_mode(struct net_device *dev) | |
1242 | { | |
1243 | kio_addr_t ioaddr = dev->base_addr; | |
1244 | ||
1245 | if (dev->flags & IFF_PROMISC) | |
1246 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, | |
1247 | ioaddr + EL3_CMD); | |
1248 | else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) | |
1249 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); | |
1250 | else | |
1251 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); | |
1252 | } | |
1253 | ||
1254 | static int el3_close(struct net_device *dev) | |
1255 | { | |
1256 | kio_addr_t ioaddr = dev->base_addr; | |
1257 | struct el3_private *lp = netdev_priv(dev); | |
1258 | dev_link_t *link = &lp->link; | |
1259 | ||
1260 | DEBUG(2, "%s: shutting down ethercard.\n", dev->name); | |
1261 | ||
1262 | if (DEV_OK(link)) { | |
1263 | unsigned long flags; | |
1264 | ||
1265 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1266 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1267 | ||
1268 | /* Disable the receiver and transmitter. */ | |
1269 | outw(RxDisable, ioaddr + EL3_CMD); | |
1270 | outw(TxDisable, ioaddr + EL3_CMD); | |
1271 | ||
1272 | /* Note: Switching to window 0 may disable the IRQ. */ | |
1273 | EL3WINDOW(0); | |
1274 | spin_lock_irqsave(&lp->window_lock, flags); | |
1275 | update_stats(dev); | |
1276 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1277 | } | |
1278 | ||
1279 | link->open--; | |
1280 | netif_stop_queue(dev); | |
1281 | del_timer_sync(&lp->media); | |
1282 | ||
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | static struct pcmcia_driver tc574_driver = { | |
1287 | .owner = THIS_MODULE, | |
1288 | .drv = { | |
1289 | .name = "3c574_cs", | |
1290 | }, | |
1291 | .attach = tc574_attach, | |
1292 | .detach = tc574_detach, | |
1293 | }; | |
1294 | ||
1295 | static int __init init_tc574(void) | |
1296 | { | |
1297 | return pcmcia_register_driver(&tc574_driver); | |
1298 | } | |
1299 | ||
1300 | static void __exit exit_tc574(void) | |
1301 | { | |
1302 | pcmcia_unregister_driver(&tc574_driver); | |
1303 | BUG_ON(dev_list != NULL); | |
1304 | } | |
1305 | ||
1306 | module_init(init_tc574); | |
1307 | module_exit(exit_tc574); |