Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* 3c574.c: A PCMCIA ethernet driver for the 3com 3c574 "RoadRunner". |
2 | ||
3 | Written 1993-1998 by | |
4 | Donald Becker, becker@scyld.com, (driver core) and | |
5 | David Hinds, dahinds@users.sourceforge.net (from his PC card code). | |
6 | Locking fixes (C) Copyright 2003 Red Hat Inc | |
7 | ||
8 | This software may be used and distributed according to the terms of | |
9 | the GNU General Public License, incorporated herein by reference. | |
10 | ||
11 | This driver derives from Donald Becker's 3c509 core, which has the | |
12 | following copyright: | |
13 | Copyright 1993 United States Government as represented by the | |
14 | Director, National Security Agency. | |
15 | ||
16 | ||
17 | */ | |
18 | ||
19 | /* | |
20 | Theory of Operation | |
21 | ||
22 | I. Board Compatibility | |
23 | ||
24 | This device driver is designed for the 3Com 3c574 PC card Fast Ethernet | |
25 | Adapter. | |
26 | ||
27 | II. Board-specific settings | |
28 | ||
29 | None -- PC cards are autoconfigured. | |
30 | ||
31 | III. Driver operation | |
32 | ||
33 | The 3c574 uses a Boomerang-style interface, without the bus-master capability. | |
34 | See the Boomerang driver and documentation for most details. | |
35 | ||
36 | IV. Notes and chip documentation. | |
37 | ||
38 | Two added registers are used to enhance PIO performance, RunnerRdCtrl and | |
39 | RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the | |
40 | count of word (16 bits) reads or writes the driver is about to do to the Rx | |
41 | or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card | |
42 | translation latency by buffering the I/O operations with an 8 word FIFO. | |
43 | Note: No other chip accesses are permitted when this buffer is used. | |
44 | ||
45 | A second enhancement is that both attribute and common memory space | |
46 | 0x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster | |
47 | with *some* PCcard bridges) may be used instead of I/O operations. | |
48 | This is enabled by setting the 0x10 bit in the PCMCIA LAN COR. | |
49 | ||
50 | Some slow PC card bridges work better if they never see a WAIT signal. | |
51 | This is configured by setting the 0x20 bit in the PCMCIA LAN COR. | |
52 | Only do this after testing that it is reliable and improves performance. | |
53 | ||
54 | The upper five bits of RunnerRdCtrl are used to window into PCcard | |
55 | configuration space registers. Window 0 is the regular Boomerang/Odie | |
56 | register set, 1-5 are various PC card control registers, and 16-31 are | |
57 | the (reversed!) CIS table. | |
58 | ||
59 | A final note: writing the InternalConfig register in window 3 with an | |
60 | invalid ramWidth is Very Bad. | |
61 | ||
62 | V. References | |
63 | ||
64 | http://www.scyld.com/expert/NWay.html | |
631dd1a8 | 65 | http://www.national.com/opf/DP/DP83840A.html |
1da177e4 LT |
66 | |
67 | Thanks to Terry Murphy of 3Com for providing development information for | |
68 | earlier 3Com products. | |
69 | ||
70 | */ | |
71 | ||
636b8116 JP |
72 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
73 | ||
1da177e4 LT |
74 | #include <linux/module.h> |
75 | #include <linux/kernel.h> | |
1da177e4 LT |
76 | #include <linux/slab.h> |
77 | #include <linux/string.h> | |
78 | #include <linux/timer.h> | |
79 | #include <linux/interrupt.h> | |
80 | #include <linux/in.h> | |
81 | #include <linux/delay.h> | |
82 | #include <linux/netdevice.h> | |
83 | #include <linux/etherdevice.h> | |
84 | #include <linux/skbuff.h> | |
85 | #include <linux/if_arp.h> | |
86 | #include <linux/ioport.h> | |
1da177e4 | 87 | #include <linux/bitops.h> |
0fa0ee05 | 88 | #include <linux/mii.h> |
1da177e4 | 89 | |
1da177e4 LT |
90 | #include <pcmcia/cistpl.h> |
91 | #include <pcmcia/cisreg.h> | |
92 | #include <pcmcia/ciscode.h> | |
93 | #include <pcmcia/ds.h> | |
1da177e4 LT |
94 | |
95 | #include <asm/uaccess.h> | |
96 | #include <asm/io.h> | |
1da177e4 LT |
97 | |
98 | /*====================================================================*/ | |
99 | ||
100 | /* Module parameters */ | |
101 | ||
102 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
103 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); | |
104 | MODULE_LICENSE("GPL"); | |
105 | ||
106 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
107 | ||
108 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
109 | INT_MODULE_PARM(max_interrupt_work, 32); | |
110 | ||
111 | /* Force full duplex modes? */ | |
112 | INT_MODULE_PARM(full_duplex, 0); | |
113 | ||
114 | /* Autodetect link polarity reversal? */ | |
115 | INT_MODULE_PARM(auto_polarity, 1); | |
116 | ||
1da177e4 LT |
117 | |
118 | /*====================================================================*/ | |
119 | ||
120 | /* Time in jiffies before concluding the transmitter is hung. */ | |
121 | #define TX_TIMEOUT ((800*HZ)/1000) | |
122 | ||
123 | /* To minimize the size of the driver source and make the driver more | |
124 | readable not all constants are symbolically defined. | |
125 | You'll need the manual if you want to understand driver details anyway. */ | |
126 | /* Offsets from base I/O address. */ | |
127 | #define EL3_DATA 0x00 | |
128 | #define EL3_CMD 0x0e | |
129 | #define EL3_STATUS 0x0e | |
130 | ||
131 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
132 | ||
133 | /* The top five bits written to EL3_CMD are a command, the lower | |
134 | 11 bits are the parameter, if applicable. */ | |
135 | enum el3_cmds { | |
136 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, | |
137 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, | |
138 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, | |
139 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, | |
140 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, | |
141 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, | |
142 | StatsDisable = 22<<11, StopCoax = 23<<11, | |
143 | }; | |
144 | ||
145 | enum elxl_status { | |
146 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, | |
147 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, | |
148 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; | |
149 | ||
150 | /* The SetRxFilter command accepts the following classes: */ | |
151 | enum RxFilter { | |
152 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 | |
153 | }; | |
154 | ||
155 | enum Window0 { | |
156 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ | |
157 | IntrStatus=0x0E, /* Valid in all windows. */ | |
158 | }; | |
159 | /* These assumes the larger EEPROM. */ | |
160 | enum Win0_EEPROM_cmds { | |
161 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, | |
162 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ | |
163 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ | |
164 | }; | |
165 | ||
166 | /* Register window 1 offsets, the window used in normal operation. | |
167 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. | |
168 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ | |
169 | enum Window1 { | |
170 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, | |
171 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, | |
172 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ | |
173 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, | |
174 | }; | |
175 | ||
176 | enum Window3 { /* Window 3: MAC/config bits. */ | |
177 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, | |
178 | }; | |
b6659824 AV |
179 | enum wn3_config { |
180 | Ram_size = 7, | |
181 | Ram_width = 8, | |
182 | Ram_speed = 0x30, | |
183 | Rom_size = 0xc0, | |
184 | Ram_split_shift = 16, | |
185 | Ram_split = 3 << Ram_split_shift, | |
186 | Xcvr_shift = 20, | |
187 | Xcvr = 7 << Xcvr_shift, | |
188 | Autoselect = 0x1000000, | |
1da177e4 LT |
189 | }; |
190 | ||
191 | enum Window4 { /* Window 4: Xcvr/media bits. */ | |
192 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, | |
193 | }; | |
194 | ||
195 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ | |
196 | ||
197 | struct el3_private { | |
fd238232 | 198 | struct pcmcia_device *p_dev; |
1da177e4 LT |
199 | u16 advertising, partner; /* NWay media advertisement */ |
200 | unsigned char phys; /* MII device address */ | |
201 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ | |
202 | /* for transceiver monitoring */ | |
203 | struct timer_list media; | |
204 | unsigned short media_status; | |
205 | unsigned short fast_poll; | |
206 | unsigned long last_irq; | |
207 | spinlock_t window_lock; /* Guards the Window selection */ | |
208 | }; | |
209 | ||
210 | /* Set iff a MII transceiver on any interface requires mdio preamble. | |
211 | This only set with the original DP83840 on older 3c905 boards, so the extra | |
212 | code size of a per-interface flag is not worthwhile. */ | |
213 | static char mii_preamble_required = 0; | |
214 | ||
215 | /* Index of functions. */ | |
216 | ||
15b99ac1 | 217 | static int tc574_config(struct pcmcia_device *link); |
fba395ee | 218 | static void tc574_release(struct pcmcia_device *link); |
1da177e4 | 219 | |
906da809 OJ |
220 | static void mdio_sync(unsigned int ioaddr, int bits); |
221 | static int mdio_read(unsigned int ioaddr, int phy_id, int location); | |
222 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, | |
223 | int value); | |
224 | static unsigned short read_eeprom(unsigned int ioaddr, int index); | |
1da177e4 LT |
225 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
226 | ||
227 | static void tc574_reset(struct net_device *dev); | |
228 | static void media_check(unsigned long arg); | |
229 | static int el3_open(struct net_device *dev); | |
dbf02fae SH |
230 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
231 | struct net_device *dev); | |
7d12e780 | 232 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
1da177e4 LT |
233 | static void update_stats(struct net_device *dev); |
234 | static struct net_device_stats *el3_get_stats(struct net_device *dev); | |
235 | static int el3_rx(struct net_device *dev, int worklimit); | |
236 | static int el3_close(struct net_device *dev); | |
237 | static void el3_tx_timeout(struct net_device *dev); | |
238 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
1da177e4 | 239 | static void set_rx_mode(struct net_device *dev); |
e3eef534 | 240 | static void set_multicast_list(struct net_device *dev); |
1da177e4 | 241 | |
cc3b4866 | 242 | static void tc574_detach(struct pcmcia_device *p_dev); |
1da177e4 | 243 | |
1da177e4 LT |
244 | /* |
245 | tc574_attach() creates an "instance" of the driver, allocating | |
246 | local data structures for one device. The device is registered | |
247 | with Card Services. | |
248 | */ | |
fb72e2ff SH |
249 | static const struct net_device_ops el3_netdev_ops = { |
250 | .ndo_open = el3_open, | |
251 | .ndo_stop = el3_close, | |
252 | .ndo_start_xmit = el3_start_xmit, | |
253 | .ndo_tx_timeout = el3_tx_timeout, | |
254 | .ndo_get_stats = el3_get_stats, | |
255 | .ndo_do_ioctl = el3_ioctl, | |
afc4b13d | 256 | .ndo_set_rx_mode = set_multicast_list, |
fb72e2ff SH |
257 | .ndo_change_mtu = eth_change_mtu, |
258 | .ndo_set_mac_address = eth_mac_addr, | |
259 | .ndo_validate_addr = eth_validate_addr, | |
260 | }; | |
1da177e4 | 261 | |
15b99ac1 | 262 | static int tc574_probe(struct pcmcia_device *link) |
1da177e4 LT |
263 | { |
264 | struct el3_private *lp; | |
1da177e4 | 265 | struct net_device *dev; |
1da177e4 | 266 | |
dd0fab5b | 267 | dev_dbg(&link->dev, "3c574_attach()\n"); |
1da177e4 LT |
268 | |
269 | /* Create the PC card device object. */ | |
270 | dev = alloc_etherdev(sizeof(struct el3_private)); | |
271 | if (!dev) | |
f8cfa618 | 272 | return -ENOMEM; |
1da177e4 | 273 | lp = netdev_priv(dev); |
1da177e4 | 274 | link->priv = dev; |
fba395ee | 275 | lp->p_dev = link; |
1da177e4 LT |
276 | |
277 | spin_lock_init(&lp->window_lock); | |
90abdc3b DB |
278 | link->resource[0]->end = 32; |
279 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; | |
1ac71e5a | 280 | link->config_flags |= CONF_ENABLE_IRQ; |
7feabb64 | 281 | link->config_index = 1; |
1da177e4 | 282 | |
fb72e2ff | 283 | dev->netdev_ops = &el3_netdev_ops; |
1da177e4 | 284 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 285 | |
15b99ac1 | 286 | return tc574_config(link); |
2262054e | 287 | } |
1da177e4 | 288 | |
fba395ee | 289 | static void tc574_detach(struct pcmcia_device *link) |
1da177e4 LT |
290 | { |
291 | struct net_device *dev = link->priv; | |
1da177e4 | 292 | |
dd0fab5b | 293 | dev_dbg(&link->dev, "3c574_detach()\n"); |
1da177e4 | 294 | |
c7c2fa07 | 295 | unregister_netdev(dev); |
1da177e4 | 296 | |
e2d40963 | 297 | tc574_release(link); |
1da177e4 | 298 | |
1da177e4 LT |
299 | free_netdev(dev); |
300 | } /* tc574_detach */ | |
301 | ||
f71e1309 | 302 | static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; |
1da177e4 | 303 | |
15b99ac1 | 304 | static int tc574_config(struct pcmcia_device *link) |
1da177e4 | 305 | { |
1da177e4 LT |
306 | struct net_device *dev = link->priv; |
307 | struct el3_private *lp = netdev_priv(dev); | |
dd0fab5b | 308 | int ret, i, j; |
906da809 | 309 | unsigned int ioaddr; |
b1e247ad | 310 | __be16 *phys_addr; |
1da177e4 | 311 | char *cardname; |
b6659824 | 312 | __u32 config; |
dddfbd82 DB |
313 | u8 *buf; |
314 | size_t len; | |
1da177e4 | 315 | |
b1e247ad | 316 | phys_addr = (__be16 *)dev->dev_addr; |
1da177e4 | 317 | |
dd0fab5b | 318 | dev_dbg(&link->dev, "3c574_config()\n"); |
1da177e4 | 319 | |
90abdc3b DB |
320 | link->io_lines = 16; |
321 | ||
1da177e4 | 322 | for (i = j = 0; j < 0x400; j += 0x20) { |
90abdc3b DB |
323 | link->resource[0]->start = j ^ 0x300; |
324 | i = pcmcia_request_io(link); | |
4c89e88b DB |
325 | if (i == 0) |
326 | break; | |
1da177e4 | 327 | } |
dd0fab5b DB |
328 | if (i != 0) |
329 | goto failed; | |
330 | ||
eb14120f | 331 | ret = pcmcia_request_irq(link, el3_interrupt); |
dd0fab5b DB |
332 | if (ret) |
333 | goto failed; | |
334 | ||
1ac71e5a | 335 | ret = pcmcia_enable_device(link); |
dd0fab5b | 336 | if (ret) |
1da177e4 | 337 | goto failed; |
1da177e4 | 338 | |
eb14120f | 339 | dev->irq = link->irq; |
9a017a91 | 340 | dev->base_addr = link->resource[0]->start; |
1da177e4 LT |
341 | |
342 | ioaddr = dev->base_addr; | |
343 | ||
344 | /* The 3c574 normally uses an EEPROM for configuration info, including | |
345 | the hardware address. The future products may include a modem chip | |
346 | and put the address in the CIS. */ | |
dddfbd82 DB |
347 | |
348 | len = pcmcia_get_tuple(link, 0x88, &buf); | |
349 | if (buf && len >= 6) { | |
1da177e4 | 350 | for (i = 0; i < 3; i++) |
dddfbd82 DB |
351 | phys_addr[i] = htons(le16_to_cpu(buf[i * 2])); |
352 | kfree(buf); | |
1da177e4 | 353 | } else { |
dddfbd82 | 354 | kfree(buf); /* 0 < len < 6 */ |
1da177e4 LT |
355 | EL3WINDOW(0); |
356 | for (i = 0; i < 3; i++) | |
357 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); | |
b1e247ad | 358 | if (phys_addr[0] == htons(0x6060)) { |
636b8116 JP |
359 | pr_notice("IO port conflict at 0x%03lx-0x%03lx\n", |
360 | dev->base_addr, dev->base_addr+15); | |
1da177e4 LT |
361 | goto failed; |
362 | } | |
363 | } | |
a9606fd3 DB |
364 | if (link->prod_id[1]) |
365 | cardname = link->prod_id[1]; | |
366 | else | |
1da177e4 LT |
367 | cardname = "3Com 3c574"; |
368 | ||
369 | { | |
370 | u_char mcr; | |
371 | outw(2<<11, ioaddr + RunnerRdCtrl); | |
372 | mcr = inb(ioaddr + 2); | |
373 | outw(0<<11, ioaddr + RunnerRdCtrl); | |
636b8116 | 374 | pr_info(" ASIC rev %d,", mcr>>3); |
1da177e4 | 375 | EL3WINDOW(3); |
b6659824 AV |
376 | config = inl(ioaddr + Wn3_Config); |
377 | lp->default_media = (config & Xcvr) >> Xcvr_shift; | |
378 | lp->autoselect = config & Autoselect ? 1 : 0; | |
1da177e4 LT |
379 | } |
380 | ||
381 | init_timer(&lp->media); | |
382 | ||
383 | { | |
384 | int phy; | |
385 | ||
386 | /* Roadrunner only: Turn on the MII transceiver */ | |
387 | outw(0x8040, ioaddr + Wn3_Options); | |
388 | mdelay(1); | |
389 | outw(0xc040, ioaddr + Wn3_Options); | |
390 | tc574_wait_for_completion(dev, TxReset); | |
391 | tc574_wait_for_completion(dev, RxReset); | |
392 | mdelay(1); | |
393 | outw(0x8040, ioaddr + Wn3_Options); | |
394 | ||
395 | EL3WINDOW(4); | |
396 | for (phy = 1; phy <= 32; phy++) { | |
397 | int mii_status; | |
398 | mdio_sync(ioaddr, 32); | |
399 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); | |
400 | if (mii_status != 0xffff) { | |
401 | lp->phys = phy & 0x1f; | |
dd0fab5b DB |
402 | dev_dbg(&link->dev, " MII transceiver at " |
403 | "index %d, status %x.\n", | |
1da177e4 LT |
404 | phy, mii_status); |
405 | if ((mii_status & 0x0040) == 0) | |
406 | mii_preamble_required = 1; | |
407 | break; | |
408 | } | |
409 | } | |
410 | if (phy > 32) { | |
636b8116 | 411 | pr_notice(" No MII transceivers found!\n"); |
1da177e4 LT |
412 | goto failed; |
413 | } | |
414 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; | |
415 | mdio_write(ioaddr, lp->phys, 16, i); | |
416 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); | |
417 | if (full_duplex) { | |
418 | /* Only advertise the FD media types. */ | |
419 | lp->advertising &= ~0x02a0; | |
420 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
421 | } | |
422 | } | |
423 | ||
dd2e5a15 | 424 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
425 | |
426 | if (register_netdev(dev) != 0) { | |
636b8116 | 427 | pr_notice("register_netdev() failed\n"); |
1da177e4 LT |
428 | goto failed; |
429 | } | |
430 | ||
636b8116 JP |
431 | netdev_info(dev, "%s at io %#3lx, irq %d, hw_addr %pM\n", |
432 | cardname, dev->base_addr, dev->irq, dev->dev_addr); | |
433 | netdev_info(dev, " %dK FIFO split %s Rx:Tx, %sMII interface.\n", | |
13b6d2e6 | 434 | 8 << (config & Ram_size), |
636b8116 JP |
435 | ram_split[(config & Ram_split) >> Ram_split_shift], |
436 | config & Autoselect ? "autoselect " : ""); | |
1da177e4 | 437 | |
15b99ac1 | 438 | return 0; |
1da177e4 | 439 | |
1da177e4 LT |
440 | failed: |
441 | tc574_release(link); | |
15b99ac1 | 442 | return -ENODEV; |
1da177e4 LT |
443 | |
444 | } /* tc574_config */ | |
445 | ||
fba395ee | 446 | static void tc574_release(struct pcmcia_device *link) |
1da177e4 | 447 | { |
fba395ee | 448 | pcmcia_disable_device(link); |
1da177e4 LT |
449 | } |
450 | ||
fba395ee | 451 | static int tc574_suspend(struct pcmcia_device *link) |
98e4c28b | 452 | { |
98e4c28b DB |
453 | struct net_device *dev = link->priv; |
454 | ||
e2d40963 | 455 | if (link->open) |
8661bb5b | 456 | netif_device_detach(dev); |
98e4c28b DB |
457 | |
458 | return 0; | |
459 | } | |
460 | ||
fba395ee | 461 | static int tc574_resume(struct pcmcia_device *link) |
98e4c28b | 462 | { |
98e4c28b DB |
463 | struct net_device *dev = link->priv; |
464 | ||
e2d40963 | 465 | if (link->open) { |
8661bb5b DB |
466 | tc574_reset(dev); |
467 | netif_device_attach(dev); | |
98e4c28b DB |
468 | } |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
1da177e4 LT |
473 | static void dump_status(struct net_device *dev) |
474 | { | |
906da809 | 475 | unsigned int ioaddr = dev->base_addr; |
1da177e4 | 476 | EL3WINDOW(1); |
636b8116 JP |
477 | netdev_info(dev, " irq status %04x, rx status %04x, tx status %02x, tx free %04x\n", |
478 | inw(ioaddr+EL3_STATUS), | |
479 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), | |
480 | inw(ioaddr+TxFree)); | |
1da177e4 | 481 | EL3WINDOW(4); |
636b8116 JP |
482 | netdev_info(dev, " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n", |
483 | inw(ioaddr+0x04), inw(ioaddr+0x06), | |
484 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); | |
1da177e4 LT |
485 | EL3WINDOW(1); |
486 | } | |
487 | ||
488 | /* | |
489 | Use this for commands that may take time to finish | |
490 | */ | |
491 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) | |
492 | { | |
493 | int i = 1500; | |
494 | outw(cmd, dev->base_addr + EL3_CMD); | |
495 | while (--i > 0) | |
496 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; | |
497 | if (i == 0) | |
636b8116 | 498 | netdev_notice(dev, "command 0x%04x did not complete!\n", cmd); |
1da177e4 LT |
499 | } |
500 | ||
501 | /* Read a word from the EEPROM using the regular EEPROM access register. | |
502 | Assume that we are in register window zero. | |
503 | */ | |
906da809 | 504 | static unsigned short read_eeprom(unsigned int ioaddr, int index) |
1da177e4 LT |
505 | { |
506 | int timer; | |
507 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); | |
508 | /* Pause for at least 162 usec for the read to take place. */ | |
509 | for (timer = 1620; timer >= 0; timer--) { | |
510 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) | |
511 | break; | |
512 | } | |
513 | return inw(ioaddr + Wn0EepromData); | |
514 | } | |
515 | ||
516 | /* MII transceiver control section. | |
517 | Read and write the MII registers using software-generated serial | |
518 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
519 | for details. | |
520 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the | |
521 | slow PC card interface. */ | |
522 | ||
523 | #define MDIO_SHIFT_CLK 0x01 | |
524 | #define MDIO_DIR_WRITE 0x04 | |
525 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) | |
526 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) | |
527 | #define MDIO_DATA_READ 0x02 | |
528 | #define MDIO_ENB_IN 0x00 | |
529 | ||
530 | /* Generate the preamble required for initial synchronization and | |
531 | a few older transceivers. */ | |
906da809 | 532 | static void mdio_sync(unsigned int ioaddr, int bits) |
1da177e4 | 533 | { |
906da809 | 534 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
535 | |
536 | /* Establish sync by sending at least 32 logic ones. */ | |
537 | while (-- bits >= 0) { | |
538 | outw(MDIO_DATA_WRITE1, mdio_addr); | |
539 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); | |
540 | } | |
541 | } | |
542 | ||
906da809 | 543 | static int mdio_read(unsigned int ioaddr, int phy_id, int location) |
1da177e4 LT |
544 | { |
545 | int i; | |
546 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
547 | unsigned int retval = 0; | |
906da809 | 548 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
549 | |
550 | if (mii_preamble_required) | |
551 | mdio_sync(ioaddr, 32); | |
552 | ||
553 | /* Shift the read command bits out. */ | |
554 | for (i = 14; i >= 0; i--) { | |
555 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
556 | outw(dataval, mdio_addr); | |
557 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
558 | } | |
559 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
560 | for (i = 19; i > 0; i--) { | |
561 | outw(MDIO_ENB_IN, mdio_addr); | |
562 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); | |
563 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
564 | } | |
565 | return (retval>>1) & 0xffff; | |
566 | } | |
567 | ||
906da809 | 568 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value) |
1da177e4 LT |
569 | { |
570 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; | |
906da809 | 571 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
1da177e4 LT |
572 | int i; |
573 | ||
574 | if (mii_preamble_required) | |
575 | mdio_sync(ioaddr, 32); | |
576 | ||
577 | /* Shift the command bits out. */ | |
578 | for (i = 31; i >= 0; i--) { | |
579 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
580 | outw(dataval, mdio_addr); | |
581 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); | |
582 | } | |
583 | /* Leave the interface idle. */ | |
584 | for (i = 1; i >= 0; i--) { | |
585 | outw(MDIO_ENB_IN, mdio_addr); | |
586 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); | |
587 | } | |
1da177e4 LT |
588 | } |
589 | ||
590 | /* Reset and restore all of the 3c574 registers. */ | |
591 | static void tc574_reset(struct net_device *dev) | |
592 | { | |
593 | struct el3_private *lp = netdev_priv(dev); | |
594 | int i; | |
906da809 | 595 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
596 | unsigned long flags; |
597 | ||
598 | tc574_wait_for_completion(dev, TotalReset|0x10); | |
599 | ||
600 | spin_lock_irqsave(&lp->window_lock, flags); | |
601 | /* Clear any transactions in progress. */ | |
602 | outw(0, ioaddr + RunnerWrCtrl); | |
603 | outw(0, ioaddr + RunnerRdCtrl); | |
604 | ||
605 | /* Set the station address and mask. */ | |
606 | EL3WINDOW(2); | |
607 | for (i = 0; i < 6; i++) | |
608 | outb(dev->dev_addr[i], ioaddr + i); | |
609 | for (; i < 12; i+=2) | |
610 | outw(0, ioaddr + i); | |
611 | ||
612 | /* Reset config options */ | |
613 | EL3WINDOW(3); | |
614 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
615 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, | |
616 | ioaddr + Wn3_Config); | |
617 | /* Roadrunner only: Turn on the MII transceiver. */ | |
618 | outw(0x8040, ioaddr + Wn3_Options); | |
619 | mdelay(1); | |
620 | outw(0xc040, ioaddr + Wn3_Options); | |
621 | EL3WINDOW(1); | |
622 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
623 | ||
624 | tc574_wait_for_completion(dev, TxReset); | |
625 | tc574_wait_for_completion(dev, RxReset); | |
626 | mdelay(1); | |
627 | spin_lock_irqsave(&lp->window_lock, flags); | |
628 | EL3WINDOW(3); | |
629 | outw(0x8040, ioaddr + Wn3_Options); | |
630 | ||
631 | /* Switch to the stats window, and clear all stats by reading. */ | |
632 | outw(StatsDisable, ioaddr + EL3_CMD); | |
633 | EL3WINDOW(6); | |
634 | for (i = 0; i < 10; i++) | |
635 | inb(ioaddr + i); | |
636 | inw(ioaddr + 10); | |
637 | inw(ioaddr + 12); | |
638 | EL3WINDOW(4); | |
639 | inb(ioaddr + 12); | |
640 | inb(ioaddr + 13); | |
641 | ||
642 | /* .. enable any extra statistics bits.. */ | |
643 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
644 | ||
645 | EL3WINDOW(1); | |
646 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
647 | ||
648 | /* .. re-sync MII and re-fill what NWay is advertising. */ | |
649 | mdio_sync(ioaddr, 32); | |
650 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); | |
651 | if (!auto_polarity) { | |
652 | /* works for TDK 78Q2120 series MII's */ | |
1569d9e8 | 653 | i = mdio_read(ioaddr, lp->phys, 16) | 0x20; |
1da177e4 LT |
654 | mdio_write(ioaddr, lp->phys, 16, i); |
655 | } | |
656 | ||
657 | spin_lock_irqsave(&lp->window_lock, flags); | |
658 | /* Switch to register set 1 for normal use, just for TxFree. */ | |
659 | set_rx_mode(dev); | |
660 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
661 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
662 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
663 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
664 | /* Allow status bits to be seen. */ | |
665 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); | |
666 | /* Ack all pending events, and set active indicator mask. */ | |
667 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
668 | ioaddr + EL3_CMD); | |
669 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
670 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); | |
671 | } | |
672 | ||
673 | static int el3_open(struct net_device *dev) | |
674 | { | |
675 | struct el3_private *lp = netdev_priv(dev); | |
fba395ee | 676 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 677 | |
9940ec36 | 678 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
679 | return -ENODEV; |
680 | ||
681 | link->open++; | |
682 | netif_start_queue(dev); | |
683 | ||
684 | tc574_reset(dev); | |
c061b18d | 685 | lp->media.function = media_check; |
1da177e4 LT |
686 | lp->media.data = (unsigned long) dev; |
687 | lp->media.expires = jiffies + HZ; | |
688 | add_timer(&lp->media); | |
689 | ||
dd0fab5b | 690 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
1da177e4 LT |
691 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | static void el3_tx_timeout(struct net_device *dev) | |
697 | { | |
906da809 | 698 | unsigned int ioaddr = dev->base_addr; |
1da177e4 | 699 | |
636b8116 | 700 | netdev_notice(dev, "Transmit timed out!\n"); |
1da177e4 | 701 | dump_status(dev); |
2e8d31d5 | 702 | dev->stats.tx_errors++; |
1ae5dc34 | 703 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
704 | /* Issue TX_RESET and TX_START commands. */ |
705 | tc574_wait_for_completion(dev, TxReset); | |
706 | outw(TxEnable, ioaddr + EL3_CMD); | |
707 | netif_wake_queue(dev); | |
708 | } | |
709 | ||
710 | static void pop_tx_status(struct net_device *dev) | |
711 | { | |
906da809 | 712 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
713 | int i; |
714 | ||
715 | /* Clear the Tx status stack. */ | |
716 | for (i = 32; i > 0; i--) { | |
717 | u_char tx_status = inb(ioaddr + TxStatus); | |
718 | if (!(tx_status & 0x84)) | |
719 | break; | |
720 | /* reset transmitter on jabber error or underrun */ | |
721 | if (tx_status & 0x30) | |
722 | tc574_wait_for_completion(dev, TxReset); | |
723 | if (tx_status & 0x38) { | |
dd0fab5b | 724 | pr_debug("%s: transmit error: status 0x%02x\n", |
1da177e4 LT |
725 | dev->name, tx_status); |
726 | outw(TxEnable, ioaddr + EL3_CMD); | |
2e8d31d5 | 727 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
728 | } |
729 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
730 | } | |
731 | } | |
732 | ||
dbf02fae SH |
733 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
734 | struct net_device *dev) | |
1da177e4 | 735 | { |
906da809 | 736 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
737 | struct el3_private *lp = netdev_priv(dev); |
738 | unsigned long flags; | |
739 | ||
dd0fab5b | 740 | pr_debug("%s: el3_start_xmit(length = %ld) called, " |
1da177e4 LT |
741 | "status %4.4x.\n", dev->name, (long)skb->len, |
742 | inw(ioaddr + EL3_STATUS)); | |
743 | ||
744 | spin_lock_irqsave(&lp->window_lock, flags); | |
df245dce AK |
745 | |
746 | dev->stats.tx_bytes += skb->len; | |
747 | ||
748 | /* Put out the doubleword header... */ | |
1da177e4 LT |
749 | outw(skb->len, ioaddr + TX_FIFO); |
750 | outw(0, ioaddr + TX_FIFO); | |
df245dce | 751 | /* ... and the packet rounded to a doubleword. */ |
1da177e4 LT |
752 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); |
753 | ||
1da177e4 LT |
754 | /* TxFree appears only in Window 1, not offset 0x1c. */ |
755 | if (inw(ioaddr + TxFree) <= 1536) { | |
756 | netif_stop_queue(dev); | |
757 | /* Interrupt us when the FIFO has room for max-sized packet. | |
758 | The threshold is in units of dwords. */ | |
759 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); | |
760 | } | |
761 | ||
762 | pop_tx_status(dev); | |
763 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
764 | dev_kfree_skb(skb); | |
6ed10654 | 765 | return NETDEV_TX_OK; |
1da177e4 LT |
766 | } |
767 | ||
768 | /* The EL3 interrupt handler. */ | |
7d12e780 | 769 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
1da177e4 LT |
770 | { |
771 | struct net_device *dev = (struct net_device *) dev_id; | |
772 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 773 | unsigned int ioaddr; |
1da177e4 LT |
774 | unsigned status; |
775 | int work_budget = max_interrupt_work; | |
776 | int handled = 0; | |
777 | ||
778 | if (!netif_device_present(dev)) | |
779 | return IRQ_NONE; | |
780 | ioaddr = dev->base_addr; | |
781 | ||
dd0fab5b | 782 | pr_debug("%s: interrupt, status %4.4x.\n", |
1da177e4 LT |
783 | dev->name, inw(ioaddr + EL3_STATUS)); |
784 | ||
785 | spin_lock(&lp->window_lock); | |
786 | ||
787 | while ((status = inw(ioaddr + EL3_STATUS)) & | |
788 | (IntLatch | RxComplete | RxEarly | StatsFull)) { | |
789 | if (!netif_device_present(dev) || | |
790 | ((status & 0xe000) != 0x2000)) { | |
dd0fab5b | 791 | pr_debug("%s: Interrupt from dead card\n", dev->name); |
1da177e4 LT |
792 | break; |
793 | } | |
794 | ||
795 | handled = 1; | |
796 | ||
797 | if (status & RxComplete) | |
798 | work_budget = el3_rx(dev, work_budget); | |
799 | ||
800 | if (status & TxAvailable) { | |
dd0fab5b | 801 | pr_debug(" TX room bit was handled.\n"); |
1da177e4 LT |
802 | /* There's room in the FIFO for a full-sized packet. */ |
803 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
804 | netif_wake_queue(dev); | |
805 | } | |
806 | ||
807 | if (status & TxComplete) | |
808 | pop_tx_status(dev); | |
809 | ||
810 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
811 | /* Handle all uncommon interrupts. */ | |
812 | if (status & StatsFull) | |
813 | update_stats(dev); | |
814 | if (status & RxEarly) { | |
815 | work_budget = el3_rx(dev, work_budget); | |
816 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
817 | } | |
818 | if (status & AdapterFailure) { | |
819 | u16 fifo_diag; | |
820 | EL3WINDOW(4); | |
821 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); | |
822 | EL3WINDOW(1); | |
636b8116 JP |
823 | netdev_notice(dev, "adapter failure, FIFO diagnostic register %04x\n", |
824 | fifo_diag); | |
1da177e4 LT |
825 | if (fifo_diag & 0x0400) { |
826 | /* Tx overrun */ | |
827 | tc574_wait_for_completion(dev, TxReset); | |
828 | outw(TxEnable, ioaddr + EL3_CMD); | |
829 | } | |
830 | if (fifo_diag & 0x2000) { | |
831 | /* Rx underrun */ | |
832 | tc574_wait_for_completion(dev, RxReset); | |
833 | set_rx_mode(dev); | |
834 | outw(RxEnable, ioaddr + EL3_CMD); | |
835 | } | |
836 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); | |
837 | } | |
838 | } | |
839 | ||
840 | if (--work_budget < 0) { | |
dd0fab5b | 841 | pr_debug("%s: Too much work in interrupt, " |
1da177e4 LT |
842 | "status %4.4x.\n", dev->name, status); |
843 | /* Clear all interrupts */ | |
844 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); | |
845 | break; | |
846 | } | |
847 | /* Acknowledge the IRQ. */ | |
848 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
849 | } | |
850 | ||
dd0fab5b | 851 | pr_debug("%s: exiting interrupt, status %4.4x.\n", |
1da177e4 LT |
852 | dev->name, inw(ioaddr + EL3_STATUS)); |
853 | ||
854 | spin_unlock(&lp->window_lock); | |
855 | return IRQ_RETVAL(handled); | |
856 | } | |
857 | ||
858 | /* | |
859 | This timer serves two purposes: to check for missed interrupts | |
860 | (and as a last resort, poll the NIC for events), and to monitor | |
861 | the MII, reporting changes in cable status. | |
862 | */ | |
863 | static void media_check(unsigned long arg) | |
864 | { | |
865 | struct net_device *dev = (struct net_device *) arg; | |
866 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 867 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
868 | unsigned long flags; |
869 | unsigned short /* cable, */ media, partner; | |
870 | ||
871 | if (!netif_device_present(dev)) | |
872 | goto reschedule; | |
873 | ||
874 | /* Check for pending interrupt with expired latency timer: with | |
875 | this, we can limp along even if the interrupt is blocked */ | |
876 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { | |
877 | if (!lp->fast_poll) | |
636b8116 | 878 | netdev_info(dev, "interrupt(s) dropped!\n"); |
671c8806 KK |
879 | |
880 | local_irq_save(flags); | |
e363d138 | 881 | el3_interrupt(dev->irq, dev); |
671c8806 KK |
882 | local_irq_restore(flags); |
883 | ||
1da177e4 LT |
884 | lp->fast_poll = HZ; |
885 | } | |
886 | if (lp->fast_poll) { | |
887 | lp->fast_poll--; | |
888 | lp->media.expires = jiffies + 2*HZ/100; | |
889 | add_timer(&lp->media); | |
890 | return; | |
891 | } | |
892 | ||
893 | spin_lock_irqsave(&lp->window_lock, flags); | |
894 | EL3WINDOW(4); | |
895 | media = mdio_read(ioaddr, lp->phys, 1); | |
896 | partner = mdio_read(ioaddr, lp->phys, 5); | |
897 | EL3WINDOW(1); | |
898 | ||
899 | if (media != lp->media_status) { | |
900 | if ((media ^ lp->media_status) & 0x0004) | |
636b8116 JP |
901 | netdev_info(dev, "%s link beat\n", |
902 | (lp->media_status & 0x0004) ? "lost" : "found"); | |
1da177e4 LT |
903 | if ((media ^ lp->media_status) & 0x0020) { |
904 | lp->partner = 0; | |
905 | if (lp->media_status & 0x0020) { | |
636b8116 | 906 | netdev_info(dev, "autonegotiation restarted\n"); |
1da177e4 LT |
907 | } else if (partner) { |
908 | partner &= lp->advertising; | |
909 | lp->partner = partner; | |
636b8116 JP |
910 | netdev_info(dev, "autonegotiation complete: " |
911 | "%dbaseT-%cD selected\n", | |
912 | (partner & 0x0180) ? 100 : 10, | |
913 | (partner & 0x0140) ? 'F' : 'H'); | |
1da177e4 | 914 | } else { |
636b8116 | 915 | netdev_info(dev, "link partner did not autonegotiate\n"); |
1da177e4 LT |
916 | } |
917 | ||
918 | EL3WINDOW(3); | |
919 | outb((partner & 0x0140 ? 0x20 : 0) | | |
920 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); | |
921 | EL3WINDOW(1); | |
922 | ||
923 | } | |
924 | if (media & 0x0010) | |
636b8116 | 925 | netdev_info(dev, "remote fault detected\n"); |
1da177e4 | 926 | if (media & 0x0002) |
636b8116 | 927 | netdev_info(dev, "jabber detected\n"); |
1da177e4 LT |
928 | lp->media_status = media; |
929 | } | |
930 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
931 | ||
932 | reschedule: | |
933 | lp->media.expires = jiffies + HZ; | |
934 | add_timer(&lp->media); | |
935 | } | |
936 | ||
937 | static struct net_device_stats *el3_get_stats(struct net_device *dev) | |
938 | { | |
939 | struct el3_private *lp = netdev_priv(dev); | |
940 | ||
941 | if (netif_device_present(dev)) { | |
942 | unsigned long flags; | |
943 | spin_lock_irqsave(&lp->window_lock, flags); | |
944 | update_stats(dev); | |
945 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
946 | } | |
2e8d31d5 | 947 | return &dev->stats; |
1da177e4 LT |
948 | } |
949 | ||
950 | /* Update statistics. | |
25985edc | 951 | Surprisingly this need not be run single-threaded, but it effectively is. |
1da177e4 LT |
952 | The counters clear when read, so the adds must merely be atomic. |
953 | */ | |
954 | static void update_stats(struct net_device *dev) | |
955 | { | |
906da809 | 956 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
957 | u8 rx, tx, up; |
958 | ||
dd0fab5b | 959 | pr_debug("%s: updating the statistics.\n", dev->name); |
1da177e4 LT |
960 | |
961 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ | |
962 | return; | |
963 | ||
964 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ | |
965 | /* Switch to the stats window, and read everything. */ | |
966 | EL3WINDOW(6); | |
2e8d31d5 PZ |
967 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
968 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1da177e4 | 969 | /* Multiple collisions. */ inb(ioaddr + 2); |
2e8d31d5 PZ |
970 | dev->stats.collisions += inb(ioaddr + 3); |
971 | dev->stats.tx_window_errors += inb(ioaddr + 4); | |
972 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); | |
973 | dev->stats.tx_packets += inb(ioaddr + 6); | |
1da177e4 | 974 | up = inb(ioaddr + 9); |
2e8d31d5 | 975 | dev->stats.tx_packets += (up&0x30) << 4; |
1da177e4 LT |
976 | /* Rx packets */ inb(ioaddr + 7); |
977 | /* Tx deferrals */ inb(ioaddr + 8); | |
978 | rx = inw(ioaddr + 10); | |
979 | tx = inw(ioaddr + 12); | |
980 | ||
981 | EL3WINDOW(4); | |
982 | /* BadSSD */ inb(ioaddr + 12); | |
983 | up = inb(ioaddr + 13); | |
984 | ||
1da177e4 LT |
985 | EL3WINDOW(1); |
986 | } | |
987 | ||
988 | static int el3_rx(struct net_device *dev, int worklimit) | |
989 | { | |
906da809 | 990 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
991 | short rx_status; |
992 | ||
dd0fab5b | 993 | pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
1da177e4 LT |
994 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
995 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && | |
b9bdcd9b RK |
996 | worklimit > 0) { |
997 | worklimit--; | |
1da177e4 LT |
998 | if (rx_status & 0x4000) { /* Error, update stats. */ |
999 | short error = rx_status & 0x3800; | |
2e8d31d5 | 1000 | dev->stats.rx_errors++; |
1da177e4 | 1001 | switch (error) { |
2e8d31d5 PZ |
1002 | case 0x0000: dev->stats.rx_over_errors++; break; |
1003 | case 0x0800: dev->stats.rx_length_errors++; break; | |
1004 | case 0x1000: dev->stats.rx_frame_errors++; break; | |
1005 | case 0x1800: dev->stats.rx_length_errors++; break; | |
1006 | case 0x2000: dev->stats.rx_frame_errors++; break; | |
1007 | case 0x2800: dev->stats.rx_crc_errors++; break; | |
1da177e4 LT |
1008 | } |
1009 | } else { | |
1010 | short pkt_len = rx_status & 0x7ff; | |
1011 | struct sk_buff *skb; | |
1012 | ||
1d266430 | 1013 | skb = netdev_alloc_skb(dev, pkt_len + 5); |
1da177e4 | 1014 | |
dd0fab5b | 1015 | pr_debug(" Receiving packet size %d status %4.4x.\n", |
1da177e4 LT |
1016 | pkt_len, rx_status); |
1017 | if (skb != NULL) { | |
1da177e4 LT |
1018 | skb_reserve(skb, 2); |
1019 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), | |
1020 | ((pkt_len+3)>>2)); | |
1021 | skb->protocol = eth_type_trans(skb, dev); | |
1022 | netif_rx(skb); | |
2e8d31d5 PZ |
1023 | dev->stats.rx_packets++; |
1024 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1025 | } else { |
dd0fab5b | 1026 | pr_debug("%s: couldn't allocate a sk_buff of" |
1da177e4 | 1027 | " size %d.\n", dev->name, pkt_len); |
2e8d31d5 | 1028 | dev->stats.rx_dropped++; |
1da177e4 LT |
1029 | } |
1030 | } | |
1031 | tc574_wait_for_completion(dev, RxDiscard); | |
1032 | } | |
1033 | ||
1034 | return worklimit; | |
1035 | } | |
1036 | ||
1da177e4 LT |
1037 | /* Provide ioctl() calls to examine the MII xcvr state. */ |
1038 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1039 | { | |
1040 | struct el3_private *lp = netdev_priv(dev); | |
906da809 | 1041 | unsigned int ioaddr = dev->base_addr; |
0fa0ee05 | 1042 | struct mii_ioctl_data *data = if_mii(rq); |
1da177e4 LT |
1043 | int phy = lp->phys & 0x1f; |
1044 | ||
dd0fab5b | 1045 | pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", |
1da177e4 | 1046 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
0fa0ee05 | 1047 | data->phy_id, data->reg_num, data->val_in, data->val_out); |
1da177e4 LT |
1048 | |
1049 | switch(cmd) { | |
1050 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ | |
0fa0ee05 | 1051 | data->phy_id = phy; |
1da177e4 LT |
1052 | case SIOCGMIIREG: /* Read the specified MII register. */ |
1053 | { | |
1054 | int saved_window; | |
1055 | unsigned long flags; | |
1056 | ||
1057 | spin_lock_irqsave(&lp->window_lock, flags); | |
1058 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1059 | EL3WINDOW(4); | |
0fa0ee05 BH |
1060 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, |
1061 | data->reg_num & 0x1f); | |
1da177e4 LT |
1062 | EL3WINDOW(saved_window); |
1063 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1064 | return 0; | |
1065 | } | |
1066 | case SIOCSMIIREG: /* Write the specified MII register */ | |
1067 | { | |
1068 | int saved_window; | |
1069 | unsigned long flags; | |
1070 | ||
1da177e4 LT |
1071 | spin_lock_irqsave(&lp->window_lock, flags); |
1072 | saved_window = inw(ioaddr + EL3_CMD) >> 13; | |
1073 | EL3WINDOW(4); | |
0fa0ee05 BH |
1074 | mdio_write(ioaddr, data->phy_id & 0x1f, |
1075 | data->reg_num & 0x1f, data->val_in); | |
1da177e4 LT |
1076 | EL3WINDOW(saved_window); |
1077 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1078 | return 0; | |
1079 | } | |
1080 | default: | |
1081 | return -EOPNOTSUPP; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not | |
1086 | documented. Until it is we revert to receiving all multicast frames when | |
1087 | any multicast reception is desired. | |
1088 | Note: My other drivers emit a log message whenever promiscuous mode is | |
1089 | entered to help detect password sniffers. This is less desirable on | |
1090 | typical PC card machines, so we omit the message. | |
1091 | */ | |
1092 | ||
1093 | static void set_rx_mode(struct net_device *dev) | |
1094 | { | |
906da809 | 1095 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
1096 | |
1097 | if (dev->flags & IFF_PROMISC) | |
1098 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, | |
1099 | ioaddr + EL3_CMD); | |
4cd24eaf | 1100 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
1da177e4 LT |
1101 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); |
1102 | else | |
1103 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); | |
1104 | } | |
1105 | ||
e3eef534 KK |
1106 | static void set_multicast_list(struct net_device *dev) |
1107 | { | |
1108 | struct el3_private *lp = netdev_priv(dev); | |
1109 | unsigned long flags; | |
1110 | ||
1111 | spin_lock_irqsave(&lp->window_lock, flags); | |
1112 | set_rx_mode(dev); | |
1113 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
1114 | } | |
1115 | ||
1da177e4 LT |
1116 | static int el3_close(struct net_device *dev) |
1117 | { | |
906da809 | 1118 | unsigned int ioaddr = dev->base_addr; |
1da177e4 | 1119 | struct el3_private *lp = netdev_priv(dev); |
fba395ee | 1120 | struct pcmcia_device *link = lp->p_dev; |
1da177e4 | 1121 | |
dd0fab5b | 1122 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); |
1da177e4 | 1123 | |
9940ec36 | 1124 | if (pcmcia_dev_present(link)) { |
1da177e4 LT |
1125 | unsigned long flags; |
1126 | ||
1127 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1128 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1129 | ||
1130 | /* Disable the receiver and transmitter. */ | |
1131 | outw(RxDisable, ioaddr + EL3_CMD); | |
1132 | outw(TxDisable, ioaddr + EL3_CMD); | |
1133 | ||
1134 | /* Note: Switching to window 0 may disable the IRQ. */ | |
1135 | EL3WINDOW(0); | |
1136 | spin_lock_irqsave(&lp->window_lock, flags); | |
1137 | update_stats(dev); | |
1138 | spin_unlock_irqrestore(&lp->window_lock, flags); | |
b9a6eaff DR |
1139 | |
1140 | /* force interrupts off */ | |
1141 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); | |
1da177e4 LT |
1142 | } |
1143 | ||
1144 | link->open--; | |
1145 | netif_stop_queue(dev); | |
1146 | del_timer_sync(&lp->media); | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
25f8f54f | 1151 | static const struct pcmcia_device_id tc574_ids[] = { |
270b6e94 | 1152 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), |
f0a3a153 | 1153 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"), |
270b6e94 DB |
1154 | PCMCIA_DEVICE_NULL, |
1155 | }; | |
1156 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); | |
1157 | ||
1da177e4 LT |
1158 | static struct pcmcia_driver tc574_driver = { |
1159 | .owner = THIS_MODULE, | |
2e9b981a | 1160 | .name = "3c574_cs", |
15b99ac1 | 1161 | .probe = tc574_probe, |
cc3b4866 | 1162 | .remove = tc574_detach, |
270b6e94 | 1163 | .id_table = tc574_ids, |
98e4c28b DB |
1164 | .suspend = tc574_suspend, |
1165 | .resume = tc574_resume, | |
1da177e4 | 1166 | }; |
fdd3f29e | 1167 | module_pcmcia_driver(tc574_driver); |