?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / net / pcmcia / smc91c92_cs.c
blob85a152173148c2f52f03aed39b99b07d9a8b6ac7
1 /*======================================================================
2
3 A PCMCIA ethernet driver for SMC91c92-based cards.
4
5 This driver supports Megahertz PCMCIA ethernet cards; and
6 Megahertz, Motorola, Ositech, and Psion Dacom ethernet/modem
7 multifunction cards.
8
9 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
10
11 smc91c92_cs.c 1.122 2002/10/25 06:26:39
12
13 This driver contains code written by Donald Becker
14 (becker@scyld.com), Rowan Hughes (x-csrdh@jcu.edu.au),
15 David Hinds (dahinds@users.sourceforge.net), and Erik Stahlman
16 (erik@vt.edu). Donald wrote the SMC 91c92 code using parts of
17 Erik's SMC 91c94 driver. Rowan wrote a similar driver, and I've
18 incorporated some parts of his driver here. I (Dave) wrote most
19 of the PCMCIA glue code, and the Ositech support code. Kelly
20 Stephens (kstephen@holli.com) added support for the Motorola
21 Mariner, with help from Allen Brost.
22
23 This software may be used and distributed according to the terms of
24 the GNU General Public License, incorporated herein by reference.
25
26 ======================================================================*/
27
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/interrupt.h>
35 #include <linux/delay.h>
36 #include <linux/crc32.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/skbuff.h>
40 #include <linux/if_arp.h>
41 #include <linux/ioport.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44
45 #include <pcmcia/version.h>
46 #include <pcmcia/cs_types.h>
47 #include <pcmcia/cs.h>
48 #include <pcmcia/cistpl.h>
49 #include <pcmcia/cisreg.h>
50 #include <pcmcia/ciscode.h>
51 #include <pcmcia/ds.h>
52
53 #include <asm/io.h>
54 #include <asm/system.h>
55 #include <asm/uaccess.h>
56
57 /* Ositech Seven of Diamonds firmware */
58 #include "ositech.h"
59
60 /*====================================================================*/
61
62 static char *if_names[] = { "auto", "10baseT", "10base2"};
63
64 /* Module parameters */
65
66 MODULE_DESCRIPTION("SMC 91c92 series PCMCIA ethernet driver");
67 MODULE_LICENSE("GPL");
68
69 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
70
71 /*
72 Transceiver/media type.
73 0 = auto
74 1 = 10baseT (and autoselect if #define AUTOSELECT),
75 2 = AUI/10base2,
76 */
77 INT_MODULE_PARM(if_port, 0);
78
79 #ifdef PCMCIA_DEBUG
80 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
81 static const char *version =
82 "smc91c92_cs.c 0.09 1996/8/4 Donald Becker, becker@scyld.com.\n";
83 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
84 #else
85 #define DEBUG(n, args...)
86 #endif
87
88 #define DRV_NAME "smc91c92_cs"
89 #define DRV_VERSION "1.122"
90
91 /*====================================================================*/
92
93 /* Operational parameter that usually are not changed. */
94
95 /* Time in jiffies before concluding Tx hung */
96 #define TX_TIMEOUT ((400*HZ)/1000)
97
98 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
99 #define INTR_WORK 4
100
101 /* Times to check the check the chip before concluding that it doesn't
102 currently have room for another Tx packet. */
103 #define MEMORY_WAIT_TIME 8
104
105 static dev_info_t dev_info = "smc91c92_cs";
106
107 static dev_link_t *dev_list;
108
109 struct smc_private {
110 dev_link_t link;
111 spinlock_t lock;
112 u_short manfid;
113 u_short cardid;
114 struct net_device_stats stats;
115 dev_node_t node;
116 struct sk_buff *saved_skb;
117 int packets_waiting;
118 void __iomem *base;
119 u_short cfg;
120 struct timer_list media;
121 int watchdog, tx_err;
122 u_short media_status;
123 u_short fast_poll;
124 u_short link_status;
125 struct mii_if_info mii_if;
126 int duplex;
127 int rx_ovrn;
128 };
129
130 /* Special definitions for Megahertz multifunction cards */
131 #define MEGAHERTZ_ISR 0x0380
132
133 /* Special function registers for Motorola Mariner */
134 #define MOT_LAN 0x0000
135 #define MOT_UART 0x0020
136 #define MOT_EEPROM 0x20
137
138 #define MOT_NORMAL \
139 (COR_LEVEL_REQ | COR_FUNC_ENA | COR_ADDR_DECODE | COR_IREQ_ENA)
140
141 /* Special function registers for Ositech cards */
142 #define OSITECH_AUI_CTL 0x0c
143 #define OSITECH_PWRDOWN 0x0d
144 #define OSITECH_RESET 0x0e
145 #define OSITECH_ISR 0x0f
146 #define OSITECH_AUI_PWR 0x0c
147 #define OSITECH_RESET_ISR 0x0e
148
149 #define OSI_AUI_PWR 0x40
150 #define OSI_LAN_PWRDOWN 0x02
151 #define OSI_MODEM_PWRDOWN 0x01
152 #define OSI_LAN_RESET 0x02
153 #define OSI_MODEM_RESET 0x01
154
155 /* Symbolic constants for the SMC91c9* series chips, from Erik Stahlman. */
156 #define BANK_SELECT 14 /* Window select register. */
157 #define SMC_SELECT_BANK(x) { outw(x, ioaddr + BANK_SELECT); }
158
159 /* Bank 0 registers. */
160 #define TCR 0 /* transmit control register */
161 #define TCR_CLEAR 0 /* do NOTHING */
162 #define TCR_ENABLE 0x0001 /* if this is 1, we can transmit */
163 #define TCR_PAD_EN 0x0080 /* pads short packets to 64 bytes */
164 #define TCR_MONCSN 0x0400 /* Monitor Carrier. */
165 #define TCR_FDUPLX 0x0800 /* Full duplex mode. */
166 #define TCR_NORMAL TCR_ENABLE | TCR_PAD_EN
167
168 #define EPH 2 /* Ethernet Protocol Handler report. */
169 #define EPH_TX_SUC 0x0001
170 #define EPH_SNGLCOL 0x0002
171 #define EPH_MULCOL 0x0004
172 #define EPH_LTX_MULT 0x0008
173 #define EPH_16COL 0x0010
174 #define EPH_SQET 0x0020
175 #define EPH_LTX_BRD 0x0040
176 #define EPH_TX_DEFR 0x0080
177 #define EPH_LAT_COL 0x0200
178 #define EPH_LOST_CAR 0x0400
179 #define EPH_EXC_DEF 0x0800
180 #define EPH_CTR_ROL 0x1000
181 #define EPH_RX_OVRN 0x2000
182 #define EPH_LINK_OK 0x4000
183 #define EPH_TX_UNRN 0x8000
184 #define MEMINFO 8 /* Memory Information Register */
185 #define MEMCFG 10 /* Memory Configuration Register */
186
187 /* Bank 1 registers. */
188 #define CONFIG 0
189 #define CFG_MII_SELECT 0x8000 /* 91C100 only */
190 #define CFG_NO_WAIT 0x1000
191 #define CFG_FULL_STEP 0x0400
192 #define CFG_SET_SQLCH 0x0200
193 #define CFG_AUI_SELECT 0x0100
194 #define CFG_16BIT 0x0080
195 #define CFG_DIS_LINK 0x0040
196 #define CFG_STATIC 0x0030
197 #define CFG_IRQ_SEL_1 0x0004
198 #define CFG_IRQ_SEL_0 0x0002
199 #define BASE_ADDR 2
200 #define ADDR0 4
201 #define GENERAL 10
202 #define CONTROL 12
203 #define CTL_STORE 0x0001
204 #define CTL_RELOAD 0x0002
205 #define CTL_EE_SELECT 0x0004
206 #define CTL_TE_ENABLE 0x0020
207 #define CTL_CR_ENABLE 0x0040
208 #define CTL_LE_ENABLE 0x0080
209 #define CTL_AUTO_RELEASE 0x0800
210 #define CTL_POWERDOWN 0x2000
211
212 /* Bank 2 registers. */
213 #define MMU_CMD 0
214 #define MC_ALLOC 0x20 /* or with number of 256 byte packets */
215 #define MC_RESET 0x40
216 #define MC_RELEASE 0x80 /* remove and release the current rx packet */
217 #define MC_FREEPKT 0xA0 /* Release packet in PNR register */
218 #define MC_ENQUEUE 0xC0 /* Enqueue the packet for transmit */
219 #define PNR_ARR 2
220 #define FIFO_PORTS 4
221 #define FP_RXEMPTY 0x8000
222 #define POINTER 6
223 #define PTR_AUTO_INC 0x0040
224 #define PTR_READ 0x2000
225 #define PTR_AUTOINC 0x4000
226 #define PTR_RCV 0x8000
227 #define DATA_1 8
228 #define INTERRUPT 12
229 #define IM_RCV_INT 0x1
230 #define IM_TX_INT 0x2
231 #define IM_TX_EMPTY_INT 0x4
232 #define IM_ALLOC_INT 0x8
233 #define IM_RX_OVRN_INT 0x10
234 #define IM_EPH_INT 0x20
235
236 #define RCR 4
237 enum RxCfg { RxAllMulti = 0x0004, RxPromisc = 0x0002,
238 RxEnable = 0x0100, RxStripCRC = 0x0200};
239 #define RCR_SOFTRESET 0x8000 /* resets the chip */
240 #define RCR_STRIP_CRC 0x200 /* strips CRC */
241 #define RCR_ENABLE 0x100 /* IFF this is set, we can receive packets */
242 #define RCR_ALMUL 0x4 /* receive all multicast packets */
243 #define RCR_PROMISC 0x2 /* enable promiscuous mode */
244
245 /* the normal settings for the RCR register : */
246 #define RCR_NORMAL (RCR_STRIP_CRC | RCR_ENABLE)
247 #define RCR_CLEAR 0x0 /* set it to a base state */
248 #define COUNTER 6
249
250 /* BANK 3 -- not the same values as in smc9194! */
251 #define MULTICAST0 0
252 #define MULTICAST2 2
253 #define MULTICAST4 4
254 #define MULTICAST6 6
255 #define MGMT 8
256 #define REVISION 0x0a
257
258 /* Transmit status bits. */
259 #define TS_SUCCESS 0x0001
260 #define TS_16COL 0x0010
261 #define TS_LATCOL 0x0200
262 #define TS_LOSTCAR 0x0400
263
264 /* Receive status bits. */
265 #define RS_ALGNERR 0x8000
266 #define RS_BADCRC 0x2000
267 #define RS_ODDFRAME 0x1000
268 #define RS_TOOLONG 0x0800
269 #define RS_TOOSHORT 0x0400
270 #define RS_MULTICAST 0x0001
271 #define RS_ERRORS (RS_ALGNERR | RS_BADCRC | RS_TOOLONG | RS_TOOSHORT)
272
273 #define set_bits(v, p) outw(inw(p)|(v), (p))
274 #define mask_bits(v, p) outw(inw(p)&(v), (p))
275
276 /*====================================================================*/
277
278 static dev_link_t *smc91c92_attach(void);
279 static void smc91c92_detach(dev_link_t *);
280 static void smc91c92_config(dev_link_t *link);
281 static void smc91c92_release(dev_link_t *link);
282 static int smc91c92_event(event_t event, int priority,
283 event_callback_args_t *args);
284
285 static int smc_open(struct net_device *dev);
286 static int smc_close(struct net_device *dev);
287 static int smc_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
288 static void smc_tx_timeout(struct net_device *dev);
289 static int smc_start_xmit(struct sk_buff *skb, struct net_device *dev);
290 static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
291 static void smc_rx(struct net_device *dev);
292 static struct net_device_stats *smc_get_stats(struct net_device *dev);
293 static void set_rx_mode(struct net_device *dev);
294 static int s9k_config(struct net_device *dev, struct ifmap *map);
295 static void smc_set_xcvr(struct net_device *dev, int if_port);
296 static void smc_reset(struct net_device *dev);
297 static void media_check(u_long arg);
298 static void mdio_sync(kio_addr_t addr);
299 static int mdio_read(struct net_device *dev, int phy_id, int loc);
300 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value);
301 static int smc_link_ok(struct net_device *dev);
302 static struct ethtool_ops ethtool_ops;
303
304 /*======================================================================
305
306 smc91c92_attach() creates an "instance" of the driver, allocating
307 local data structures for one device. The device is registered
308 with Card Services.
309
310 ======================================================================*/
311
312 static dev_link_t *smc91c92_attach(void)
313 {
314 client_reg_t client_reg;
315 struct smc_private *smc;
316 dev_link_t *link;
317 struct net_device *dev;
318 int ret;
319
320 DEBUG(0, "smc91c92_attach()\n");
321
322 /* Create new ethernet device */
323 dev = alloc_etherdev(sizeof(struct smc_private));
324 if (!dev)
325 return NULL;
326 smc = netdev_priv(dev);
327 link = &smc->link;
328 link->priv = dev;
329
330 spin_lock_init(&smc->lock);
331 link->io.NumPorts1 = 16;
332 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
333 link->io.IOAddrLines = 4;
334 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
335 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
336 link->irq.Handler = &smc_interrupt;
337 link->irq.Instance = dev;
338 link->conf.Attributes = CONF_ENABLE_IRQ;
339 link->conf.Vcc = 50;
340 link->conf.IntType = INT_MEMORY_AND_IO;
341
342 /* The SMC91c92-specific entries in the device structure. */
343 SET_MODULE_OWNER(dev);
344 dev->hard_start_xmit = &smc_start_xmit;
345 dev->get_stats = &smc_get_stats;
346 dev->set_config = &s9k_config;
347 dev->set_multicast_list = &set_rx_mode;
348 dev->open = &smc_open;
349 dev->stop = &smc_close;
350 dev->do_ioctl = &smc_ioctl;
351 SET_ETHTOOL_OPS(dev, &ethtool_ops);
352 #ifdef HAVE_TX_TIMEOUT
353 dev->tx_timeout = smc_tx_timeout;
354 dev->watchdog_timeo = TX_TIMEOUT;
355 #endif
356
357 smc->mii_if.dev = dev;
358 smc->mii_if.mdio_read = mdio_read;
359 smc->mii_if.mdio_write = mdio_write;
360 smc->mii_if.phy_id_mask = 0x1f;
361 smc->mii_if.reg_num_mask = 0x1f;
362
363 /* Register with Card Services */
364 link->next = dev_list;
365 dev_list = link;
366 client_reg.dev_info = &dev_info;
367 client_reg.EventMask = CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
368 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
369 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
370 client_reg.event_handler = &smc91c92_event;
371 client_reg.Version = 0x0210;
372 client_reg.event_callback_args.client_data = link;
373 ret = pcmcia_register_client(&link->handle, &client_reg);
374 if (ret != 0) {
375 cs_error(link->handle, RegisterClient, ret);
376 smc91c92_detach(link);
377 return NULL;
378 }
379
380 return link;
381 } /* smc91c92_attach */
382
383 /*======================================================================
384
385 This deletes a driver "instance". The device is de-registered
386 with Card Services. If it has been released, all local data
387 structures are freed. Otherwise, the structures will be freed
388 when the device is released.
389
390 ======================================================================*/
391
392 static void smc91c92_detach(dev_link_t *link)
393 {
394 struct net_device *dev = link->priv;
395 dev_link_t **linkp;
396
397 DEBUG(0, "smc91c92_detach(0x%p)\n", link);
398
399 /* Locate device structure */
400 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
401 if (*linkp == link) break;
402 if (*linkp == NULL)
403 return;
404
405 if (link->dev)
406 unregister_netdev(dev);
407
408 if (link->state & DEV_CONFIG)
409 smc91c92_release(link);
410
411 if (link->handle)
412 pcmcia_deregister_client(link->handle);
413
414 /* Unlink device structure, free bits */
415 *linkp = link->next;
416 free_netdev(dev);
417 } /* smc91c92_detach */
418
419 /*====================================================================*/
420
421 static int cvt_ascii_address(struct net_device *dev, char *s)
422 {
423 int i, j, da, c;
424
425 if (strlen(s) != 12)
426 return -1;
427 for (i = 0; i < 6; i++) {
428 da = 0;
429 for (j = 0; j < 2; j++) {
430 c = *s++;
431 da <<= 4;
432 da += ((c >= '0') && (c <= '9')) ?
433 (c - '0') : ((c & 0x0f) + 9);
434 }
435 dev->dev_addr[i] = da;
436 }
437 return 0;
438 }
439
440 /*====================================================================*/
441
442 static int first_tuple(client_handle_t handle, tuple_t *tuple,
443 cisparse_t *parse)
444 {
445 int i;
446
447 if ((i = pcmcia_get_first_tuple(handle, tuple)) != CS_SUCCESS ||
448 (i = pcmcia_get_tuple_data(handle, tuple)) != CS_SUCCESS)
449 return i;
450 return pcmcia_parse_tuple(handle, tuple, parse);
451 }
452
453 static int next_tuple(client_handle_t handle, tuple_t *tuple,
454 cisparse_t *parse)
455 {
456 int i;
457
458 if ((i = pcmcia_get_next_tuple(handle, tuple)) != CS_SUCCESS ||
459 (i = pcmcia_get_tuple_data(handle, tuple)) != CS_SUCCESS)
460 return i;
461 return pcmcia_parse_tuple(handle, tuple, parse);
462 }
463
464 /*======================================================================
465
466 Configuration stuff for Megahertz cards
467
468 mhz_3288_power() is used to power up a 3288's ethernet chip.
469 mhz_mfc_config() handles socket setup for multifunction (1144
470 and 3288) cards. mhz_setup() gets a card's hardware ethernet
471 address.
472
473 ======================================================================*/
474
475 static int mhz_3288_power(dev_link_t *link)
476 {
477 struct net_device *dev = link->priv;
478 struct smc_private *smc = netdev_priv(dev);
479 u_char tmp;
480
481 /* Read the ISR twice... */
482 readb(smc->base+MEGAHERTZ_ISR);
483 udelay(5);
484 readb(smc->base+MEGAHERTZ_ISR);
485
486 /* Pause 200ms... */
487 mdelay(200);
488
489 /* Now read and write the COR... */
490 tmp = readb(smc->base + link->conf.ConfigBase + CISREG_COR);
491 udelay(5);
492 writeb(tmp, smc->base + link->conf.ConfigBase + CISREG_COR);
493
494 return 0;
495 }
496
497 static int mhz_mfc_config(dev_link_t *link)
498 {
499 struct net_device *dev = link->priv;
500 struct smc_private *smc = netdev_priv(dev);
501 tuple_t tuple;
502 cisparse_t parse;
503 u_char buf[255];
504 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
505 win_req_t req;
506 memreq_t mem;
507 int i, k;
508
509 link->conf.Attributes |= CONF_ENABLE_SPKR;
510 link->conf.Status = CCSR_AUDIO_ENA;
511 link->irq.Attributes =
512 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED|IRQ_HANDLE_PRESENT;
513 link->io.IOAddrLines = 16;
514 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
515 link->io.NumPorts2 = 8;
516
517 tuple.Attributes = tuple.TupleOffset = 0;
518 tuple.TupleData = (cisdata_t *)buf;
519 tuple.TupleDataMax = sizeof(buf);
520 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
521
522 i = first_tuple(link->handle, &tuple, &parse);
523 /* The Megahertz combo cards have modem-like CIS entries, so
524 we have to explicitly try a bunch of port combinations. */
525 while (i == CS_SUCCESS) {
526 link->conf.ConfigIndex = cf->index;
527 link->io.BasePort2 = cf->io.win[0].base;
528 for (k = 0; k < 0x400; k += 0x10) {
529 if (k & 0x80) continue;
530 link->io.BasePort1 = k ^ 0x300;
531 i = pcmcia_request_io(link->handle, &link->io);
532 if (i == CS_SUCCESS) break;
533 }
534 if (i == CS_SUCCESS) break;
535 i = next_tuple(link->handle, &tuple, &parse);
536 }
537 if (i != CS_SUCCESS)
538 return i;
539 dev->base_addr = link->io.BasePort1;
540
541 /* Allocate a memory window, for accessing the ISR */
542 req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
543 req.Base = req.Size = 0;
544 req.AccessSpeed = 0;
545 i = pcmcia_request_window(&link->handle, &req, &link->win);
546 if (i != CS_SUCCESS)
547 return i;
548 smc->base = ioremap(req.Base, req.Size);
549 mem.CardOffset = mem.Page = 0;
550 if (smc->manfid == MANFID_MOTOROLA)
551 mem.CardOffset = link->conf.ConfigBase;
552 i = pcmcia_map_mem_page(link->win, &mem);
553
554 if ((i == CS_SUCCESS)
555 && (smc->manfid == MANFID_MEGAHERTZ)
556 && (smc->cardid == PRODID_MEGAHERTZ_EM3288))
557 mhz_3288_power(link);
558
559 return i;
560 }
561
562 static int mhz_setup(dev_link_t *link)
563 {
564 client_handle_t handle = link->handle;
565 struct net_device *dev = link->priv;
566 tuple_t tuple;
567 cisparse_t parse;
568 u_char buf[255], *station_addr;
569
570 tuple.Attributes = tuple.TupleOffset = 0;
571 tuple.TupleData = buf;
572 tuple.TupleDataMax = sizeof(buf);
573
574 /* Read the station address from the CIS. It is stored as the last
575 (fourth) string in the Version 1 Version/ID tuple. */
576 tuple.DesiredTuple = CISTPL_VERS_1;
577 if (first_tuple(handle, &tuple, &parse) != CS_SUCCESS)
578 return -1;
579 /* Ugh -- the EM1144 card has two VERS_1 tuples!?! */
580 if (next_tuple(handle, &tuple, &parse) != CS_SUCCESS)
581 first_tuple(handle, &tuple, &parse);
582 if (parse.version_1.ns > 3) {
583 station_addr = parse.version_1.str + parse.version_1.ofs[3];
584 if (cvt_ascii_address(dev, station_addr) == 0)
585 return 0;
586 }
587
588 /* Another possibility: for the EM3288, in a special tuple */
589 tuple.DesiredTuple = 0x81;
590 if (pcmcia_get_first_tuple(handle, &tuple) != CS_SUCCESS)
591 return -1;
592 if (pcmcia_get_tuple_data(handle, &tuple) != CS_SUCCESS)
593 return -1;
594 buf[12] = '\0';
595 if (cvt_ascii_address(dev, buf) == 0)
596 return 0;
597
598 return -1;
599 }
600
601 /*======================================================================
602
603 Configuration stuff for the Motorola Mariner
604
605 mot_config() writes directly to the Mariner configuration
606 registers because the CIS is just bogus.
607
608 ======================================================================*/
609
610 static void mot_config(dev_link_t *link)
611 {
612 struct net_device *dev = link->priv;
613 struct smc_private *smc = netdev_priv(dev);
614 kio_addr_t ioaddr = dev->base_addr;
615 kio_addr_t iouart = link->io.BasePort2;
616
617 /* Set UART base address and force map with COR bit 1 */
618 writeb(iouart & 0xff, smc->base + MOT_UART + CISREG_IOBASE_0);
619 writeb((iouart >> 8) & 0xff, smc->base + MOT_UART + CISREG_IOBASE_1);
620 writeb(MOT_NORMAL, smc->base + MOT_UART + CISREG_COR);
621
622 /* Set SMC base address and force map with COR bit 1 */
623 writeb(ioaddr & 0xff, smc->base + MOT_LAN + CISREG_IOBASE_0);
624 writeb((ioaddr >> 8) & 0xff, smc->base + MOT_LAN + CISREG_IOBASE_1);
625 writeb(MOT_NORMAL, smc->base + MOT_LAN + CISREG_COR);
626
627 /* Wait for things to settle down */
628 mdelay(100);
629 }
630
631 static int mot_setup(dev_link_t *link)
632 {
633 struct net_device *dev = link->priv;
634 kio_addr_t ioaddr = dev->base_addr;
635 int i, wait, loop;
636 u_int addr;
637
638 /* Read Ethernet address from Serial EEPROM */
639
640 for (i = 0; i < 3; i++) {
641 SMC_SELECT_BANK(2);
642 outw(MOT_EEPROM + i, ioaddr + POINTER);
643 SMC_SELECT_BANK(1);
644 outw((CTL_RELOAD | CTL_EE_SELECT), ioaddr + CONTROL);
645
646 for (loop = wait = 0; loop < 200; loop++) {
647 udelay(10);
648 wait = ((CTL_RELOAD | CTL_STORE) & inw(ioaddr + CONTROL));
649 if (wait == 0) break;
650 }
651
652 if (wait)
653 return -1;
654
655 addr = inw(ioaddr + GENERAL);
656 dev->dev_addr[2*i] = addr & 0xff;
657 dev->dev_addr[2*i+1] = (addr >> 8) & 0xff;
658 }
659
660 return 0;
661 }
662
663 /*====================================================================*/
664
665 static int smc_config(dev_link_t *link)
666 {
667 struct net_device *dev = link->priv;
668 tuple_t tuple;
669 cisparse_t parse;
670 u_char buf[255];
671 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
672 int i;
673
674 tuple.Attributes = tuple.TupleOffset = 0;
675 tuple.TupleData = (cisdata_t *)buf;
676 tuple.TupleDataMax = sizeof(buf);
677 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
678
679 link->io.NumPorts1 = 16;
680 i = first_tuple(link->handle, &tuple, &parse);
681 while (i != CS_NO_MORE_ITEMS) {
682 if (i == CS_SUCCESS) {
683 link->conf.ConfigIndex = cf->index;
684 link->io.BasePort1 = cf->io.win[0].base;
685 link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
686 i = pcmcia_request_io(link->handle, &link->io);
687 if (i == CS_SUCCESS) break;
688 }
689 i = next_tuple(link->handle, &tuple, &parse);
690 }
691 if (i == CS_SUCCESS)
692 dev->base_addr = link->io.BasePort1;
693 return i;
694 }
695
696 static int smc_setup(dev_link_t *link)
697 {
698 client_handle_t handle = link->handle;
699 struct net_device *dev = link->priv;
700 tuple_t tuple;
701 cisparse_t parse;
702 cistpl_lan_node_id_t *node_id;
703 u_char buf[255], *station_addr;
704 int i;
705
706 tuple.Attributes = tuple.TupleOffset = 0;
707 tuple.TupleData = buf;
708 tuple.TupleDataMax = sizeof(buf);
709
710 /* Check for a LAN function extension tuple */
711 tuple.DesiredTuple = CISTPL_FUNCE;
712 i = first_tuple(handle, &tuple, &parse);
713 while (i == CS_SUCCESS) {
714 if (parse.funce.type == CISTPL_FUNCE_LAN_NODE_ID)
715 break;
716 i = next_tuple(handle, &tuple, &parse);
717 }
718 if (i == CS_SUCCESS) {
719 node_id = (cistpl_lan_node_id_t *)parse.funce.data;
720 if (node_id->nb == 6) {
721 for (i = 0; i < 6; i++)
722 dev->dev_addr[i] = node_id->id[i];
723 return 0;
724 }
725 }
726 /* Try the third string in the Version 1 Version/ID tuple. */
727 tuple.DesiredTuple = CISTPL_VERS_1;
728 if (first_tuple(handle, &tuple, &parse) != CS_SUCCESS)
729 return -1;
730 station_addr = parse.version_1.str + parse.version_1.ofs[2];
731 if (cvt_ascii_address(dev, station_addr) == 0)
732 return 0;
733
734 return -1;
735 }
736
737 /*====================================================================*/
738
739 static int osi_config(dev_link_t *link)
740 {
741 struct net_device *dev = link->priv;
742 static kio_addr_t com[4] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
743 int i, j;
744
745 link->conf.Attributes |= CONF_ENABLE_SPKR;
746 link->conf.Status = CCSR_AUDIO_ENA;
747 link->irq.Attributes =
748 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED|IRQ_HANDLE_PRESENT;
749 link->io.NumPorts1 = 64;
750 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
751 link->io.NumPorts2 = 8;
752 link->io.IOAddrLines = 16;
753
754 /* Enable Hard Decode, LAN, Modem */
755 link->conf.ConfigIndex = 0x23;
756
757 for (i = j = 0; j < 4; j++) {
758 link->io.BasePort2 = com[j];
759 i = pcmcia_request_io(link->handle, &link->io);
760 if (i == CS_SUCCESS) break;
761 }
762 if (i != CS_SUCCESS) {
763 /* Fallback: turn off hard decode */
764 link->conf.ConfigIndex = 0x03;
765 link->io.NumPorts2 = 0;
766 i = pcmcia_request_io(link->handle, &link->io);
767 }
768 dev->base_addr = link->io.BasePort1 + 0x10;
769 return i;
770 }
771
772 static int osi_setup(dev_link_t *link, u_short manfid, u_short cardid)
773 {
774 client_handle_t handle = link->handle;
775 struct net_device *dev = link->priv;
776 tuple_t tuple;
777 u_char buf[255];
778 int i;
779
780 tuple.Attributes = TUPLE_RETURN_COMMON;
781 tuple.TupleData = buf;
782 tuple.TupleDataMax = sizeof(buf);
783 tuple.TupleOffset = 0;
784
785 /* Read the station address from tuple 0x90, subtuple 0x04 */
786 tuple.DesiredTuple = 0x90;
787 i = pcmcia_get_first_tuple(handle, &tuple);
788 while (i == CS_SUCCESS) {
789 i = pcmcia_get_tuple_data(handle, &tuple);
790 if ((i != CS_SUCCESS) || (buf[0] == 0x04))
791 break;
792 i = pcmcia_get_next_tuple(handle, &tuple);
793 }
794 if (i != CS_SUCCESS)
795 return -1;
796 for (i = 0; i < 6; i++)
797 dev->dev_addr[i] = buf[i+2];
798
799 if (((manfid == MANFID_OSITECH) &&
800 (cardid == PRODID_OSITECH_SEVEN)) ||
801 ((manfid == MANFID_PSION) &&
802 (cardid == PRODID_PSION_NET100))) {
803 /* Download the Seven of Diamonds firmware */
804 for (i = 0; i < sizeof(__Xilinx7OD); i++) {
805 outb(__Xilinx7OD[i], link->io.BasePort1+2);
806 udelay(50);
807 }
808 } else if (manfid == MANFID_OSITECH) {
809 /* Make sure both functions are powered up */
810 set_bits(0x300, link->io.BasePort1 + OSITECH_AUI_PWR);
811 /* Now, turn on the interrupt for both card functions */
812 set_bits(0x300, link->io.BasePort1 + OSITECH_RESET_ISR);
813 DEBUG(2, "AUI/PWR: %4.4x RESET/ISR: %4.4x\n",
814 inw(link->io.BasePort1 + OSITECH_AUI_PWR),
815 inw(link->io.BasePort1 + OSITECH_RESET_ISR));
816 }
817
818 return 0;
819 }
820
821 /*======================================================================
822
823 This verifies that the chip is some SMC91cXX variant, and returns
824 the revision code if successful. Otherwise, it returns -ENODEV.
825
826 ======================================================================*/
827
828 static int check_sig(dev_link_t *link)
829 {
830 struct net_device *dev = link->priv;
831 kio_addr_t ioaddr = dev->base_addr;
832 int width;
833 u_short s;
834
835 SMC_SELECT_BANK(1);
836 if (inw(ioaddr + BANK_SELECT) >> 8 != 0x33) {
837 /* Try powering up the chip */
838 outw(0, ioaddr + CONTROL);
839 mdelay(55);
840 }
841
842 /* Try setting bus width */
843 width = (link->io.Attributes1 == IO_DATA_PATH_WIDTH_AUTO);
844 s = inb(ioaddr + CONFIG);
845 if (width)
846 s |= CFG_16BIT;
847 else
848 s &= ~CFG_16BIT;
849 outb(s, ioaddr + CONFIG);
850
851 /* Check Base Address Register to make sure bus width is OK */
852 s = inw(ioaddr + BASE_ADDR);
853 if ((inw(ioaddr + BANK_SELECT) >> 8 == 0x33) &&
854 ((s >> 8) != (s & 0xff))) {
855 SMC_SELECT_BANK(3);
856 s = inw(ioaddr + REVISION);
857 return (s & 0xff);
858 }
859
860 if (width) {
861 event_callback_args_t args;
862 printk(KERN_INFO "smc91c92_cs: using 8-bit IO window.\n");
863 args.client_data = link;
864 smc91c92_event(CS_EVENT_RESET_PHYSICAL, 0, &args);
865 pcmcia_release_io(link->handle, &link->io);
866 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
867 pcmcia_request_io(link->handle, &link->io);
868 smc91c92_event(CS_EVENT_CARD_RESET, 0, &args);
869 return check_sig(link);
870 }
871 return -ENODEV;
872 }
873
874 /*======================================================================
875
876 smc91c92_config() is scheduled to run after a CARD_INSERTION event
877 is received, to configure the PCMCIA socket, and to make the
878 ethernet device available to the system.
879
880 ======================================================================*/
881
882 #define CS_EXIT_TEST(ret, svc, label) \
883 if (ret != CS_SUCCESS) { cs_error(link->handle, svc, ret); goto label; }
884
885 static void smc91c92_config(dev_link_t *link)
886 {
887 client_handle_t handle = link->handle;
888 struct net_device *dev = link->priv;
889 struct smc_private *smc = netdev_priv(dev);
890 tuple_t tuple;
891 cisparse_t parse;
892 u_short buf[32];
893 char *name;
894 int i, j, rev;
895 kio_addr_t ioaddr;
896 u_long mir;
897
898 DEBUG(0, "smc91c92_config(0x%p)\n", link);
899
900 tuple.Attributes = tuple.TupleOffset = 0;
901 tuple.TupleData = (cisdata_t *)buf;
902 tuple.TupleDataMax = sizeof(buf);
903
904 tuple.DesiredTuple = CISTPL_CONFIG;
905 i = first_tuple(handle, &tuple, &parse);
906 CS_EXIT_TEST(i, ParseTuple, config_failed);
907 link->conf.ConfigBase = parse.config.base;
908 link->conf.Present = parse.config.rmask[0];
909
910 tuple.DesiredTuple = CISTPL_MANFID;
911 tuple.Attributes = TUPLE_RETURN_COMMON;
912 if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
913 smc->manfid = parse.manfid.manf;
914 smc->cardid = parse.manfid.card;
915 }
916
917 /* Configure card */
918 link->state |= DEV_CONFIG;
919
920 if ((smc->manfid == MANFID_OSITECH) &&
921 (smc->cardid != PRODID_OSITECH_SEVEN)) {
922 i = osi_config(link);
923 } else if ((smc->manfid == MANFID_MOTOROLA) ||
924 ((smc->manfid == MANFID_MEGAHERTZ) &&
925 ((smc->cardid == PRODID_MEGAHERTZ_VARIOUS) ||
926 (smc->cardid == PRODID_MEGAHERTZ_EM3288)))) {
927 i = mhz_mfc_config(link);
928 } else {
929 i = smc_config(link);
930 }
931 CS_EXIT_TEST(i, RequestIO, config_failed);
932
933 i = pcmcia_request_irq(link->handle, &link->irq);
934 CS_EXIT_TEST(i, RequestIRQ, config_failed);
935 i = pcmcia_request_configuration(link->handle, &link->conf);
936 CS_EXIT_TEST(i, RequestConfiguration, config_failed);
937
938 if (smc->manfid == MANFID_MOTOROLA)
939 mot_config(link);
940
941 dev->irq = link->irq.AssignedIRQ;
942
943 if ((if_port >= 0) && (if_port <= 2))
944 dev->if_port = if_port;
945 else
946 printk(KERN_NOTICE "smc91c92_cs: invalid if_port requested\n");
947
948 switch (smc->manfid) {
949 case MANFID_OSITECH:
950 case MANFID_PSION:
951 i = osi_setup(link, smc->manfid, smc->cardid); break;
952 case MANFID_SMC:
953 case MANFID_NEW_MEDIA:
954 i = smc_setup(link); break;
955 case 0x128: /* For broken Megahertz cards */
956 case MANFID_MEGAHERTZ:
957 i = mhz_setup(link); break;
958 case MANFID_MOTOROLA:
959 default: /* get the hw address from EEPROM */
960 i = mot_setup(link); break;
961 }
962
963 if (i != 0) {
964 printk(KERN_NOTICE "smc91c92_cs: Unable to find hardware address.\n");
965 goto config_undo;
966 }
967
968 smc->duplex = 0;
969 smc->rx_ovrn = 0;
970
971 rev = check_sig(link);
972 name = "???";
973 if (rev > 0)
974 switch (rev >> 4) {
975 case 3: name = "92"; break;
976 case 4: name = ((rev & 15) >= 6) ? "96" : "94"; break;
977 case 5: name = "95"; break;
978 case 7: name = "100"; break;
979 case 8: name = "100-FD"; break;
980 case 9: name = "110"; break;
981 }
982
983 ioaddr = dev->base_addr;
984 if (rev > 0) {
985 u_long mcr;
986 SMC_SELECT_BANK(0);
987 mir = inw(ioaddr + MEMINFO) & 0xff;
988 if (mir == 0xff) mir++;
989 /* Get scale factor for memory size */
990 mcr = ((rev >> 4) > 3) ? inw(ioaddr + MEMCFG) : 0x0200;
991 mir *= 128 * (1<<((mcr >> 9) & 7));
992 SMC_SELECT_BANK(1);
993 smc->cfg = inw(ioaddr + CONFIG) & ~CFG_AUI_SELECT;
994 smc->cfg |= CFG_NO_WAIT | CFG_16BIT | CFG_STATIC;
995 if (smc->manfid == MANFID_OSITECH)
996 smc->cfg |= CFG_IRQ_SEL_1 | CFG_IRQ_SEL_0;
997 if ((rev >> 4) >= 7)
998 smc->cfg |= CFG_MII_SELECT;
999 } else
1000 mir = 0;
1001
1002 if (smc->cfg & CFG_MII_SELECT) {
1003 SMC_SELECT_BANK(3);
1004
1005 for (i = 0; i < 32; i++) {
1006 j = mdio_read(dev, i, 1);
1007 if ((j != 0) && (j != 0xffff)) break;
1008 }
1009 smc->mii_if.phy_id = (i < 32) ? i : -1;
1010
1011 SMC_SELECT_BANK(0);
1012 }
1013
1014 link->dev = &smc->node;
1015 link->state &= ~DEV_CONFIG_PENDING;
1016 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
1017
1018 if (register_netdev(dev) != 0) {
1019 printk(KERN_ERR "smc91c92_cs: register_netdev() failed\n");
1020 link->dev = NULL;
1021 goto config_undo;
1022 }
1023
1024 strcpy(smc->node.dev_name, dev->name);
1025
1026 printk(KERN_INFO "%s: smc91c%s rev %d: io %#3lx, irq %d, "
1027 "hw_addr ", dev->name, name, (rev & 0x0f), dev->base_addr,
1028 dev->irq);
1029 for (i = 0; i < 6; i++)
1030 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
1031
1032 if (rev > 0) {
1033 if (mir & 0x3ff)
1034 printk(KERN_INFO " %lu byte", mir);
1035 else
1036 printk(KERN_INFO " %lu kb", mir>>10);
1037 printk(" buffer, %s xcvr\n", (smc->cfg & CFG_MII_SELECT) ?
1038 "MII" : if_names[dev->if_port]);
1039 }
1040
1041 if (smc->cfg & CFG_MII_SELECT) {
1042 if (smc->mii_if.phy_id != -1) {
1043 DEBUG(0, " MII transceiver at index %d, status %x.\n",
1044 smc->mii_if.phy_id, j);
1045 } else {
1046 printk(KERN_NOTICE " No MII transceivers found!\n");
1047 }
1048 }
1049
1050 return;
1051
1052 config_undo:
1053 unregister_netdev(dev);
1054 config_failed: /* CS_EXIT_TEST() calls jump to here... */
1055 smc91c92_release(link);
1056 link->state &= ~DEV_CONFIG_PENDING;
1057
1058 } /* smc91c92_config */
1059
1060 /*======================================================================
1061
1062 After a card is removed, smc91c92_release() will unregister the net
1063 device, and release the PCMCIA configuration. If the device is
1064 still open, this will be postponed until it is closed.
1065
1066 ======================================================================*/
1067
1068 static void smc91c92_release(dev_link_t *link)
1069 {
1070
1071 DEBUG(0, "smc91c92_release(0x%p)\n", link);
1072
1073 pcmcia_release_configuration(link->handle);
1074 pcmcia_release_io(link->handle, &link->io);
1075 pcmcia_release_irq(link->handle, &link->irq);
1076 if (link->win) {
1077 struct net_device *dev = link->priv;
1078 struct smc_private *smc = netdev_priv(dev);
1079 iounmap(smc->base);
1080 pcmcia_release_window(link->win);
1081 }
1082
1083 link->state &= ~DEV_CONFIG;
1084 }
1085
1086 /*======================================================================
1087
1088 The card status event handler. Mostly, this schedules other
1089 stuff to run after an event is received. A CARD_REMOVAL event
1090 also sets some flags to discourage the net drivers from trying
1091 to talk to the card any more.
1092
1093 ======================================================================*/
1094
1095 static int smc91c92_event(event_t event, int priority,
1096 event_callback_args_t *args)
1097 {
1098 dev_link_t *link = args->client_data;
1099 struct net_device *dev = link->priv;
1100 struct smc_private *smc = netdev_priv(dev);
1101 int i;
1102
1103 DEBUG(1, "smc91c92_event(0x%06x)\n", event);
1104
1105 switch (event) {
1106 case CS_EVENT_CARD_REMOVAL:
1107 link->state &= ~DEV_PRESENT;
1108 if (link->state & DEV_CONFIG)
1109 netif_device_detach(dev);
1110 break;
1111 case CS_EVENT_CARD_INSERTION:
1112 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1113 smc91c92_config(link);
1114 break;
1115 case CS_EVENT_PM_SUSPEND:
1116 link->state |= DEV_SUSPEND;
1117 /* Fall through... */
1118 case CS_EVENT_RESET_PHYSICAL:
1119 if (link->state & DEV_CONFIG) {
1120 if (link->open)
1121 netif_device_detach(dev);
1122 pcmcia_release_configuration(link->handle);
1123 }
1124 break;
1125 case CS_EVENT_PM_RESUME:
1126 link->state &= ~DEV_SUSPEND;
1127 /* Fall through... */
1128 case CS_EVENT_CARD_RESET:
1129 if (link->state & DEV_CONFIG) {
1130 if ((smc->manfid == MANFID_MEGAHERTZ) &&
1131 (smc->cardid == PRODID_MEGAHERTZ_EM3288))
1132 mhz_3288_power(link);
1133 pcmcia_request_configuration(link->handle, &link->conf);
1134 if (smc->manfid == MANFID_MOTOROLA)
1135 mot_config(link);
1136 if ((smc->manfid == MANFID_OSITECH) &&
1137 (smc->cardid != PRODID_OSITECH_SEVEN)) {
1138 /* Power up the card and enable interrupts */
1139 set_bits(0x0300, dev->base_addr-0x10+OSITECH_AUI_PWR);
1140 set_bits(0x0300, dev->base_addr-0x10+OSITECH_RESET_ISR);
1141 }
1142 if (((smc->manfid == MANFID_OSITECH) &&
1143 (smc->cardid == PRODID_OSITECH_SEVEN)) ||
1144 ((smc->manfid == MANFID_PSION) &&
1145 (smc->cardid == PRODID_PSION_NET100))) {
1146 /* Download the Seven of Diamonds firmware */
1147 for (i = 0; i < sizeof(__Xilinx7OD); i++) {
1148 outb(__Xilinx7OD[i], link->io.BasePort1+2);
1149 udelay(50);
1150 }
1151 }
1152 if (link->open) {
1153 smc_reset(dev);
1154 netif_device_attach(dev);
1155 }
1156 }
1157 break;
1158 }
1159 return 0;
1160 } /* smc91c92_event */
1161
1162 /*======================================================================
1163
1164 MII interface support for SMC91cXX based cards
1165 ======================================================================*/
1166
1167 #define MDIO_SHIFT_CLK 0x04
1168 #define MDIO_DATA_OUT 0x01
1169 #define MDIO_DIR_WRITE 0x08
1170 #define MDIO_DATA_WRITE0 (MDIO_DIR_WRITE)
1171 #define MDIO_DATA_WRITE1 (MDIO_DIR_WRITE | MDIO_DATA_OUT)
1172 #define MDIO_DATA_READ 0x02
1173
1174 static void mdio_sync(kio_addr_t addr)
1175 {
1176 int bits;
1177 for (bits = 0; bits < 32; bits++) {
1178 outb(MDIO_DATA_WRITE1, addr);
1179 outb(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
1180 }
1181 }
1182
1183 static int mdio_read(struct net_device *dev, int phy_id, int loc)
1184 {
1185 kio_addr_t addr = dev->base_addr + MGMT;
1186 u_int cmd = (0x06<<10)|(phy_id<<5)|loc;
1187 int i, retval = 0;
1188
1189 mdio_sync(addr);
1190 for (i = 13; i >= 0; i--) {
1191 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
1192 outb(dat, addr);
1193 outb(dat | MDIO_SHIFT_CLK, addr);
1194 }
1195 for (i = 19; i > 0; i--) {
1196 outb(0, addr);
1197 retval = (retval << 1) | ((inb(addr) & MDIO_DATA_READ) != 0);
1198 outb(MDIO_SHIFT_CLK, addr);
1199 }
1200 return (retval>>1) & 0xffff;
1201 }
1202
1203 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value)
1204 {
1205 kio_addr_t addr = dev->base_addr + MGMT;
1206 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
1207 int i;
1208
1209 mdio_sync(addr);
1210 for (i = 31; i >= 0; i--) {
1211 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
1212 outb(dat, addr);
1213 outb(dat | MDIO_SHIFT_CLK, addr);
1214 }
1215 for (i = 1; i >= 0; i--) {
1216 outb(0, addr);
1217 outb(MDIO_SHIFT_CLK, addr);
1218 }
1219 }
1220
1221 /*======================================================================
1222
1223 The driver core code, most of which should be common with a
1224 non-PCMCIA implementation.
1225
1226 ======================================================================*/
1227
1228 #ifdef PCMCIA_DEBUG
1229 static void smc_dump(struct net_device *dev)
1230 {
1231 kio_addr_t ioaddr = dev->base_addr;
1232 u_short i, w, save;
1233 save = inw(ioaddr + BANK_SELECT);
1234 for (w = 0; w < 4; w++) {
1235 SMC_SELECT_BANK(w);
1236 printk(KERN_DEBUG "bank %d: ", w);
1237 for (i = 0; i < 14; i += 2)
1238 printk(" %04x", inw(ioaddr + i));
1239 printk("\n");
1240 }
1241 outw(save, ioaddr + BANK_SELECT);
1242 }
1243 #endif
1244
1245 static int smc_open(struct net_device *dev)
1246 {
1247 struct smc_private *smc = netdev_priv(dev);
1248 dev_link_t *link = &smc->link;
1249
1250 #ifdef PCMCIA_DEBUG
1251 DEBUG(0, "%s: smc_open(%p), ID/Window %4.4x.\n",
1252 dev->name, dev, inw(dev->base_addr + BANK_SELECT));
1253 if (pc_debug > 1) smc_dump(dev);
1254 #endif
1255
1256 /* Check that the PCMCIA card is still here. */
1257 if (!DEV_OK(link))
1258 return -ENODEV;
1259 /* Physical device present signature. */
1260 if (check_sig(link) < 0) {
1261 printk("smc91c92_cs: Yikes! Bad chip signature!\n");
1262 return -ENODEV;
1263 }
1264 link->open++;
1265
1266 netif_start_queue(dev);
1267 smc->saved_skb = NULL;
1268 smc->packets_waiting = 0;
1269
1270 smc_reset(dev);
1271 init_timer(&smc->media);
1272 smc->media.function = &media_check;
1273 smc->media.data = (u_long) dev;
1274 smc->media.expires = jiffies + HZ;
1275 add_timer(&smc->media);
1276
1277 return 0;
1278 } /* smc_open */
1279
1280 /*====================================================================*/
1281
1282 static int smc_close(struct net_device *dev)
1283 {
1284 struct smc_private *smc = netdev_priv(dev);
1285 dev_link_t *link = &smc->link;
1286 kio_addr_t ioaddr = dev->base_addr;
1287
1288 DEBUG(0, "%s: smc_close(), status %4.4x.\n",
1289 dev->name, inw(ioaddr + BANK_SELECT));
1290
1291 netif_stop_queue(dev);
1292
1293 /* Shut off all interrupts, and turn off the Tx and Rx sections.
1294 Don't bother to check for chip present. */
1295 SMC_SELECT_BANK(2); /* Nominally paranoia, but do no assume... */
1296 outw(0, ioaddr + INTERRUPT);
1297 SMC_SELECT_BANK(0);
1298 mask_bits(0xff00, ioaddr + RCR);
1299 mask_bits(0xff00, ioaddr + TCR);
1300
1301 /* Put the chip into power-down mode. */
1302 SMC_SELECT_BANK(1);
1303 outw(CTL_POWERDOWN, ioaddr + CONTROL );
1304
1305 link->open--;
1306 del_timer_sync(&smc->media);
1307
1308 return 0;
1309 } /* smc_close */
1310
1311 /*======================================================================
1312
1313 Transfer a packet to the hardware and trigger the packet send.
1314 This may be called at either from either the Tx queue code
1315 or the interrupt handler.
1316
1317 ======================================================================*/
1318
1319 static void smc_hardware_send_packet(struct net_device * dev)
1320 {
1321 struct smc_private *smc = netdev_priv(dev);
1322 struct sk_buff *skb = smc->saved_skb;
1323 kio_addr_t ioaddr = dev->base_addr;
1324 u_char packet_no;
1325
1326 if (!skb) {
1327 printk(KERN_ERR "%s: In XMIT with no packet to send.\n", dev->name);
1328 return;
1329 }
1330
1331 /* There should be a packet slot waiting. */
1332 packet_no = inw(ioaddr + PNR_ARR) >> 8;
1333 if (packet_no & 0x80) {
1334 /* If not, there is a hardware problem! Likely an ejected card. */
1335 printk(KERN_WARNING "%s: 91c92 hardware Tx buffer allocation"
1336 " failed, status %#2.2x.\n", dev->name, packet_no);
1337 dev_kfree_skb_irq(skb);
1338 smc->saved_skb = NULL;
1339 netif_start_queue(dev);
1340 return;
1341 }
1342
1343 smc->stats.tx_bytes += skb->len;
1344 /* The card should use the just-allocated buffer. */
1345 outw(packet_no, ioaddr + PNR_ARR);
1346 /* point to the beginning of the packet */
1347 outw(PTR_AUTOINC , ioaddr + POINTER);
1348
1349 /* Send the packet length (+6 for status, length and ctl byte)
1350 and the status word (set to zeros). */
1351 {
1352 u_char *buf = skb->data;
1353 u_int length = skb->len; /* The chip will pad to ethernet min. */
1354
1355 DEBUG(2, "%s: Trying to xmit packet of length %d.\n",
1356 dev->name, length);
1357
1358 /* send the packet length: +6 for status word, length, and ctl */
1359 outw(0, ioaddr + DATA_1);
1360 outw(length + 6, ioaddr + DATA_1);
1361 outsw(ioaddr + DATA_1, buf, length >> 1);
1362
1363 /* The odd last byte, if there is one, goes in the control word. */
1364 outw((length & 1) ? 0x2000 | buf[length-1] : 0, ioaddr + DATA_1);
1365 }
1366
1367 /* Enable the Tx interrupts, both Tx (TxErr) and TxEmpty. */
1368 outw(((IM_TX_INT|IM_TX_EMPTY_INT)<<8) |
1369 (inw(ioaddr + INTERRUPT) & 0xff00),
1370 ioaddr + INTERRUPT);
1371
1372 /* The chip does the rest of the work. */
1373 outw(MC_ENQUEUE , ioaddr + MMU_CMD);
1374
1375 smc->saved_skb = NULL;
1376 dev_kfree_skb_irq(skb);
1377 dev->trans_start = jiffies;
1378 netif_start_queue(dev);
1379 return;
1380 }
1381
1382 /*====================================================================*/
1383
1384 static void smc_tx_timeout(struct net_device *dev)
1385 {
1386 struct smc_private *smc = netdev_priv(dev);
1387 kio_addr_t ioaddr = dev->base_addr;
1388
1389 printk(KERN_NOTICE "%s: SMC91c92 transmit timed out, "
1390 "Tx_status %2.2x status %4.4x.\n",
1391 dev->name, inw(ioaddr)&0xff, inw(ioaddr + 2));
1392 smc->stats.tx_errors++;
1393 smc_reset(dev);
1394 dev->trans_start = jiffies;
1395 smc->saved_skb = NULL;
1396 netif_wake_queue(dev);
1397 }
1398
1399 static int smc_start_xmit(struct sk_buff *skb, struct net_device *dev)
1400 {
1401 struct smc_private *smc = netdev_priv(dev);
1402 kio_addr_t ioaddr = dev->base_addr;
1403 u_short num_pages;
1404 short time_out, ir;
1405
1406 netif_stop_queue(dev);
1407
1408 DEBUG(2, "%s: smc_start_xmit(length = %d) called,"
1409 " status %4.4x.\n", dev->name, skb->len, inw(ioaddr + 2));
1410
1411 if (smc->saved_skb) {
1412 /* THIS SHOULD NEVER HAPPEN. */
1413 smc->stats.tx_aborted_errors++;
1414 printk(KERN_DEBUG "%s: Internal error -- sent packet while busy.\n",
1415 dev->name);
1416 return 1;
1417 }
1418 smc->saved_skb = skb;
1419
1420 num_pages = skb->len >> 8;
1421
1422 if (num_pages > 7) {
1423 printk(KERN_ERR "%s: Far too big packet error.\n", dev->name);
1424 dev_kfree_skb (skb);
1425 smc->saved_skb = NULL;
1426 smc->stats.tx_dropped++;
1427 return 0; /* Do not re-queue this packet. */
1428 }
1429 /* A packet is now waiting. */
1430 smc->packets_waiting++;
1431
1432 SMC_SELECT_BANK(2); /* Paranoia, we should always be in window 2 */
1433
1434 /* need MC_RESET to keep the memory consistent. errata? */
1435 if (smc->rx_ovrn) {
1436 outw(MC_RESET, ioaddr + MMU_CMD);
1437 smc->rx_ovrn = 0;
1438 }
1439
1440 /* Allocate the memory; send the packet now if we win. */
1441 outw(MC_ALLOC | num_pages, ioaddr + MMU_CMD);
1442 for (time_out = MEMORY_WAIT_TIME; time_out >= 0; time_out--) {
1443 ir = inw(ioaddr+INTERRUPT);
1444 if (ir & IM_ALLOC_INT) {
1445 /* Acknowledge the interrupt, send the packet. */
1446 outw((ir&0xff00) | IM_ALLOC_INT, ioaddr + INTERRUPT);
1447 smc_hardware_send_packet(dev); /* Send the packet now.. */
1448 return 0;
1449 }
1450 }
1451
1452 /* Otherwise defer until the Tx-space-allocated interrupt. */
1453 DEBUG(2, "%s: memory allocation deferred.\n", dev->name);
1454 outw((IM_ALLOC_INT << 8) | (ir & 0xff00), ioaddr + INTERRUPT);
1455
1456 return 0;
1457 }
1458
1459 /*======================================================================
1460
1461 Handle a Tx anomolous event. Entered while in Window 2.
1462
1463 ======================================================================*/
1464
1465 static void smc_tx_err(struct net_device * dev)
1466 {
1467 struct smc_private *smc = netdev_priv(dev);
1468 kio_addr_t ioaddr = dev->base_addr;
1469 int saved_packet = inw(ioaddr + PNR_ARR) & 0xff;
1470 int packet_no = inw(ioaddr + FIFO_PORTS) & 0x7f;
1471 int tx_status;
1472
1473 /* select this as the packet to read from */
1474 outw(packet_no, ioaddr + PNR_ARR);
1475
1476 /* read the first word from this packet */
1477 outw(PTR_AUTOINC | PTR_READ | 0, ioaddr + POINTER);
1478
1479 tx_status = inw(ioaddr + DATA_1);
1480
1481 smc->stats.tx_errors++;
1482 if (tx_status & TS_LOSTCAR) smc->stats.tx_carrier_errors++;
1483 if (tx_status & TS_LATCOL) smc->stats.tx_window_errors++;
1484 if (tx_status & TS_16COL) {
1485 smc->stats.tx_aborted_errors++;
1486 smc->tx_err++;
1487 }
1488
1489 if (tx_status & TS_SUCCESS) {
1490 printk(KERN_NOTICE "%s: Successful packet caused error "
1491 "interrupt?\n", dev->name);
1492 }
1493 /* re-enable transmit */
1494 SMC_SELECT_BANK(0);
1495 outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1496 SMC_SELECT_BANK(2);
1497
1498 outw(MC_FREEPKT, ioaddr + MMU_CMD); /* Free the packet memory. */
1499
1500 /* one less packet waiting for me */
1501 smc->packets_waiting--;
1502
1503 outw(saved_packet, ioaddr + PNR_ARR);
1504 return;
1505 }
1506
1507 /*====================================================================*/
1508
1509 static void smc_eph_irq(struct net_device *dev)
1510 {
1511 struct smc_private *smc = netdev_priv(dev);
1512 kio_addr_t ioaddr = dev->base_addr;
1513 u_short card_stats, ephs;
1514
1515 SMC_SELECT_BANK(0);
1516 ephs = inw(ioaddr + EPH);
1517 DEBUG(2, "%s: Ethernet protocol handler interrupt, status"
1518 " %4.4x.\n", dev->name, ephs);
1519 /* Could be a counter roll-over warning: update stats. */
1520 card_stats = inw(ioaddr + COUNTER);
1521 /* single collisions */
1522 smc->stats.collisions += card_stats & 0xF;
1523 card_stats >>= 4;
1524 /* multiple collisions */
1525 smc->stats.collisions += card_stats & 0xF;
1526 #if 0 /* These are for when linux supports these statistics */
1527 card_stats >>= 4; /* deferred */
1528 card_stats >>= 4; /* excess deferred */
1529 #endif
1530 /* If we had a transmit error we must re-enable the transmitter. */
1531 outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1532
1533 /* Clear a link error interrupt. */
1534 SMC_SELECT_BANK(1);
1535 outw(CTL_AUTO_RELEASE | 0x0000, ioaddr + CONTROL);
1536 outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1537 ioaddr + CONTROL);
1538 SMC_SELECT_BANK(2);
1539 }
1540
1541 /*====================================================================*/
1542
1543 static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1544 {
1545 struct net_device *dev = dev_id;
1546 struct smc_private *smc = netdev_priv(dev);
1547 kio_addr_t ioaddr;
1548 u_short saved_bank, saved_pointer, mask, status;
1549 unsigned int handled = 1;
1550 char bogus_cnt = INTR_WORK; /* Work we are willing to do. */
1551
1552 if (!netif_device_present(dev))
1553 return IRQ_NONE;
1554
1555 ioaddr = dev->base_addr;
1556
1557 DEBUG(3, "%s: SMC91c92 interrupt %d at %#x.\n", dev->name,
1558 irq, ioaddr);
1559
1560 smc->watchdog = 0;
1561 saved_bank = inw(ioaddr + BANK_SELECT);
1562 if ((saved_bank & 0xff00) != 0x3300) {
1563 /* The device does not exist -- the card could be off-line, or
1564 maybe it has been ejected. */
1565 DEBUG(1, "%s: SMC91c92 interrupt %d for non-existent"
1566 "/ejected device.\n", dev->name, irq);
1567 handled = 0;
1568 goto irq_done;
1569 }
1570
1571 SMC_SELECT_BANK(2);
1572 saved_pointer = inw(ioaddr + POINTER);
1573 mask = inw(ioaddr + INTERRUPT) >> 8;
1574 /* clear all interrupts */
1575 outw(0, ioaddr + INTERRUPT);
1576
1577 do { /* read the status flag, and mask it */
1578 status = inw(ioaddr + INTERRUPT) & 0xff;
1579 DEBUG(3, "%s: Status is %#2.2x (mask %#2.2x).\n", dev->name,
1580 status, mask);
1581 if ((status & mask) == 0) {
1582 if (bogus_cnt == INTR_WORK)
1583 handled = 0;
1584 break;
1585 }
1586 if (status & IM_RCV_INT) {
1587 /* Got a packet(s). */
1588 smc_rx(dev);
1589 }
1590 if (status & IM_TX_INT) {
1591 smc_tx_err(dev);
1592 outw(IM_TX_INT, ioaddr + INTERRUPT);
1593 }
1594 status &= mask;
1595 if (status & IM_TX_EMPTY_INT) {
1596 outw(IM_TX_EMPTY_INT, ioaddr + INTERRUPT);
1597 mask &= ~IM_TX_EMPTY_INT;
1598 smc->stats.tx_packets += smc->packets_waiting;
1599 smc->packets_waiting = 0;
1600 }
1601 if (status & IM_ALLOC_INT) {
1602 /* Clear this interrupt so it doesn't happen again */
1603 mask &= ~IM_ALLOC_INT;
1604
1605 smc_hardware_send_packet(dev);
1606
1607 /* enable xmit interrupts based on this */
1608 mask |= (IM_TX_EMPTY_INT | IM_TX_INT);
1609
1610 /* and let the card send more packets to me */
1611 netif_wake_queue(dev);
1612 }
1613 if (status & IM_RX_OVRN_INT) {
1614 smc->stats.rx_errors++;
1615 smc->stats.rx_fifo_errors++;
1616 if (smc->duplex)
1617 smc->rx_ovrn = 1; /* need MC_RESET outside smc_interrupt */
1618 outw(IM_RX_OVRN_INT, ioaddr + INTERRUPT);
1619 }
1620 if (status & IM_EPH_INT)
1621 smc_eph_irq(dev);
1622 } while (--bogus_cnt);
1623
1624 DEBUG(3, " Restoring saved registers mask %2.2x bank %4.4x"
1625 " pointer %4.4x.\n", mask, saved_bank, saved_pointer);
1626
1627 /* restore state register */
1628 outw((mask<<8), ioaddr + INTERRUPT);
1629 outw(saved_pointer, ioaddr + POINTER);
1630 SMC_SELECT_BANK(saved_bank);
1631
1632 DEBUG(3, "%s: Exiting interrupt IRQ%d.\n", dev->name, irq);
1633
1634 irq_done:
1635
1636 if ((smc->manfid == MANFID_OSITECH) &&
1637 (smc->cardid != PRODID_OSITECH_SEVEN)) {
1638 /* Retrigger interrupt if needed */
1639 mask_bits(0x00ff, ioaddr-0x10+OSITECH_RESET_ISR);
1640 set_bits(0x0300, ioaddr-0x10+OSITECH_RESET_ISR);
1641 }
1642 if (smc->manfid == MANFID_MOTOROLA) {
1643 u_char cor;
1644 cor = readb(smc->base + MOT_UART + CISREG_COR);
1645 writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_UART + CISREG_COR);
1646 writeb(cor, smc->base + MOT_UART + CISREG_COR);
1647 cor = readb(smc->base + MOT_LAN + CISREG_COR);
1648 writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_LAN + CISREG_COR);
1649 writeb(cor, smc->base + MOT_LAN + CISREG_COR);
1650 }
1651 #ifdef DOES_NOT_WORK
1652 if (smc->base != NULL) { /* Megahertz MFC's */
1653 readb(smc->base+MEGAHERTZ_ISR);
1654 readb(smc->base+MEGAHERTZ_ISR);
1655 }
1656 #endif
1657 return IRQ_RETVAL(handled);
1658 }
1659
1660 /*====================================================================*/
1661
1662 static void smc_rx(struct net_device *dev)
1663 {
1664 struct smc_private *smc = netdev_priv(dev);
1665 kio_addr_t ioaddr = dev->base_addr;
1666 int rx_status;
1667 int packet_length; /* Caution: not frame length, rather words
1668 to transfer from the chip. */
1669
1670 /* Assertion: we are in Window 2. */
1671
1672 if (inw(ioaddr + FIFO_PORTS) & FP_RXEMPTY) {
1673 printk(KERN_ERR "%s: smc_rx() with nothing on Rx FIFO.\n",
1674 dev->name);
1675 return;
1676 }
1677
1678 /* Reset the read pointer, and read the status and packet length. */
1679 outw(PTR_READ | PTR_RCV | PTR_AUTOINC, ioaddr + POINTER);
1680 rx_status = inw(ioaddr + DATA_1);
1681 packet_length = inw(ioaddr + DATA_1) & 0x07ff;
1682
1683 DEBUG(2, "%s: Receive status %4.4x length %d.\n",
1684 dev->name, rx_status, packet_length);
1685
1686 if (!(rx_status & RS_ERRORS)) {
1687 /* do stuff to make a new packet */
1688 struct sk_buff *skb;
1689
1690 /* Note: packet_length adds 5 or 6 extra bytes here! */
1691 skb = dev_alloc_skb(packet_length+2);
1692
1693 if (skb == NULL) {
1694 DEBUG(1, "%s: Low memory, packet dropped.\n", dev->name);
1695 smc->stats.rx_dropped++;
1696 outw(MC_RELEASE, ioaddr + MMU_CMD);
1697 return;
1698 }
1699
1700 packet_length -= (rx_status & RS_ODDFRAME ? 5 : 6);
1701 skb_reserve(skb, 2);
1702 insw(ioaddr+DATA_1, skb_put(skb, packet_length),
1703 (packet_length+1)>>1);
1704 skb->protocol = eth_type_trans(skb, dev);
1705
1706 skb->dev = dev;
1707 netif_rx(skb);
1708 dev->last_rx = jiffies;
1709 smc->stats.rx_packets++;
1710 smc->stats.rx_bytes += packet_length;
1711 if (rx_status & RS_MULTICAST)
1712 smc->stats.multicast++;
1713 } else {
1714 /* error ... */
1715 smc->stats.rx_errors++;
1716
1717 if (rx_status & RS_ALGNERR) smc->stats.rx_frame_errors++;
1718 if (rx_status & (RS_TOOSHORT | RS_TOOLONG))
1719 smc->stats.rx_length_errors++;
1720 if (rx_status & RS_BADCRC) smc->stats.rx_crc_errors++;
1721 }
1722 /* Let the MMU free the memory of this packet. */
1723 outw(MC_RELEASE, ioaddr + MMU_CMD);
1724
1725 return;
1726 }
1727
1728 /*====================================================================*/
1729
1730 static struct net_device_stats *smc_get_stats(struct net_device *dev)
1731 {
1732 struct smc_private *smc = netdev_priv(dev);
1733 /* Nothing to update - the 91c92 is a pretty primative chip. */
1734 return &smc->stats;
1735 }
1736
1737 /*======================================================================
1738
1739 Calculate values for the hardware multicast filter hash table.
1740
1741 ======================================================================*/
1742
1743 static void fill_multicast_tbl(int count, struct dev_mc_list *addrs,
1744 u_char *multicast_table)
1745 {
1746 struct dev_mc_list *mc_addr;
1747
1748 for (mc_addr = addrs; mc_addr && --count > 0; mc_addr = mc_addr->next) {
1749 u_int position = ether_crc(6, mc_addr->dmi_addr);
1750 #ifndef final_version /* Verify multicast address. */
1751 if ((mc_addr->dmi_addr[0] & 1) == 0)
1752 continue;
1753 #endif
1754 multicast_table[position >> 29] |= 1 << ((position >> 26) & 7);
1755 }
1756 }
1757
1758 /*======================================================================
1759
1760 Set the receive mode.
1761
1762 This routine is used by both the protocol level to notify us of
1763 promiscuous/multicast mode changes, and by the open/reset code to
1764 initialize the Rx registers. We always set the multicast list and
1765 leave the receiver running.
1766
1767 ======================================================================*/
1768
1769 static void set_rx_mode(struct net_device *dev)
1770 {
1771 kio_addr_t ioaddr = dev->base_addr;
1772 struct smc_private *smc = netdev_priv(dev);
1773 u_int multicast_table[ 2 ] = { 0, };
1774 unsigned long flags;
1775 u_short rx_cfg_setting;
1776
1777 if (dev->flags & IFF_PROMISC) {
1778 printk(KERN_NOTICE "%s: setting Rx mode to promiscuous.\n", dev->name);
1779 rx_cfg_setting = RxStripCRC | RxEnable | RxPromisc | RxAllMulti;
1780 } else if (dev->flags & IFF_ALLMULTI)
1781 rx_cfg_setting = RxStripCRC | RxEnable | RxAllMulti;
1782 else {
1783 if (dev->mc_count) {
1784 fill_multicast_tbl(dev->mc_count, dev->mc_list,
1785 (u_char *)multicast_table);
1786 }
1787 rx_cfg_setting = RxStripCRC | RxEnable;
1788 }
1789
1790 /* Load MC table and Rx setting into the chip without interrupts. */
1791 spin_lock_irqsave(&smc->lock, flags);
1792 SMC_SELECT_BANK(3);
1793 outl(multicast_table[0], ioaddr + MULTICAST0);
1794 outl(multicast_table[1], ioaddr + MULTICAST4);
1795 SMC_SELECT_BANK(0);
1796 outw(rx_cfg_setting, ioaddr + RCR);
1797 SMC_SELECT_BANK(2);
1798 spin_unlock_irqrestore(&smc->lock, flags);
1799
1800 return;
1801 }
1802
1803 /*======================================================================
1804
1805 Senses when a card's config changes. Here, it's coax or TP.
1806
1807 ======================================================================*/
1808
1809 static int s9k_config(struct net_device *dev, struct ifmap *map)
1810 {
1811 struct smc_private *smc = netdev_priv(dev);
1812 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
1813 if (smc->cfg & CFG_MII_SELECT)
1814 return -EOPNOTSUPP;
1815 else if (map->port > 2)
1816 return -EINVAL;
1817 dev->if_port = map->port;
1818 printk(KERN_INFO "%s: switched to %s port\n",
1819 dev->name, if_names[dev->if_port]);
1820 smc_reset(dev);
1821 }
1822 return 0;
1823 }
1824
1825 /*======================================================================
1826
1827 Reset the chip, reloading every register that might be corrupted.
1828
1829 ======================================================================*/
1830
1831 /*
1832 Set transceiver type, perhaps to something other than what the user
1833 specified in dev->if_port.
1834 */
1835 static void smc_set_xcvr(struct net_device *dev, int if_port)
1836 {
1837 struct smc_private *smc = netdev_priv(dev);
1838 kio_addr_t ioaddr = dev->base_addr;
1839 u_short saved_bank;
1840
1841 saved_bank = inw(ioaddr + BANK_SELECT);
1842 SMC_SELECT_BANK(1);
1843 if (if_port == 2) {
1844 outw(smc->cfg | CFG_AUI_SELECT, ioaddr + CONFIG);
1845 if ((smc->manfid == MANFID_OSITECH) &&
1846 (smc->cardid != PRODID_OSITECH_SEVEN))
1847 set_bits(OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1848 smc->media_status = ((dev->if_port == 0) ? 0x0001 : 0x0002);
1849 } else {
1850 outw(smc->cfg, ioaddr + CONFIG);
1851 if ((smc->manfid == MANFID_OSITECH) &&
1852 (smc->cardid != PRODID_OSITECH_SEVEN))
1853 mask_bits(~OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1854 smc->media_status = ((dev->if_port == 0) ? 0x0012 : 0x4001);
1855 }
1856 SMC_SELECT_BANK(saved_bank);
1857 }
1858
1859 static void smc_reset(struct net_device *dev)
1860 {
1861 kio_addr_t ioaddr = dev->base_addr;
1862 struct smc_private *smc = netdev_priv(dev);
1863 int i;
1864
1865 DEBUG(0, "%s: smc91c92 reset called.\n", dev->name);
1866
1867 /* The first interaction must be a write to bring the chip out
1868 of sleep mode. */
1869 SMC_SELECT_BANK(0);
1870 /* Reset the chip. */
1871 outw(RCR_SOFTRESET, ioaddr + RCR);
1872 udelay(10);
1873
1874 /* Clear the transmit and receive configuration registers. */
1875 outw(RCR_CLEAR, ioaddr + RCR);
1876 outw(TCR_CLEAR, ioaddr + TCR);
1877
1878 /* Set the Window 1 control, configuration and station addr registers.
1879 No point in writing the I/O base register ;-> */
1880 SMC_SELECT_BANK(1);
1881 /* Automatically release succesfully transmitted packets,
1882 Accept link errors, counter and Tx error interrupts. */
1883 outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1884 ioaddr + CONTROL);
1885 smc_set_xcvr(dev, dev->if_port);
1886 if ((smc->manfid == MANFID_OSITECH) &&
1887 (smc->cardid != PRODID_OSITECH_SEVEN))
1888 outw((dev->if_port == 2 ? OSI_AUI_PWR : 0) |
1889 (inw(ioaddr-0x10+OSITECH_AUI_PWR) & 0xff00),
1890 ioaddr - 0x10 + OSITECH_AUI_PWR);
1891
1892 /* Fill in the physical address. The databook is wrong about the order! */
1893 for (i = 0; i < 6; i += 2)
1894 outw((dev->dev_addr[i+1]<<8)+dev->dev_addr[i],
1895 ioaddr + ADDR0 + i);
1896
1897 /* Reset the MMU */
1898 SMC_SELECT_BANK(2);
1899 outw(MC_RESET, ioaddr + MMU_CMD);
1900 outw(0, ioaddr + INTERRUPT);
1901
1902 /* Re-enable the chip. */
1903 SMC_SELECT_BANK(0);
1904 outw(((smc->cfg & CFG_MII_SELECT) ? 0 : TCR_MONCSN) |
1905 TCR_ENABLE | TCR_PAD_EN | smc->duplex, ioaddr + TCR);
1906 set_rx_mode(dev);
1907
1908 if (smc->cfg & CFG_MII_SELECT) {
1909 SMC_SELECT_BANK(3);
1910
1911 /* Reset MII */
1912 mdio_write(dev, smc->mii_if.phy_id, 0, 0x8000);
1913
1914 /* Advertise 100F, 100H, 10F, 10H */
1915 mdio_write(dev, smc->mii_if.phy_id, 4, 0x01e1);
1916
1917 /* Restart MII autonegotiation */
1918 mdio_write(dev, smc->mii_if.phy_id, 0, 0x0000);
1919 mdio_write(dev, smc->mii_if.phy_id, 0, 0x1200);
1920 }
1921
1922 /* Enable interrupts. */
1923 SMC_SELECT_BANK(2);
1924 outw((IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) << 8,
1925 ioaddr + INTERRUPT);
1926 }
1927
1928 /*======================================================================
1929
1930 Media selection timer routine
1931
1932 ======================================================================*/
1933
1934 static void media_check(u_long arg)
1935 {
1936 struct net_device *dev = (struct net_device *) arg;
1937 struct smc_private *smc = netdev_priv(dev);
1938 kio_addr_t ioaddr = dev->base_addr;
1939 u_short i, media, saved_bank;
1940 u_short link;
1941
1942 saved_bank = inw(ioaddr + BANK_SELECT);
1943
1944 if (!netif_device_present(dev))
1945 goto reschedule;
1946
1947 SMC_SELECT_BANK(2);
1948
1949 /* need MC_RESET to keep the memory consistent. errata? */
1950 if (smc->rx_ovrn) {
1951 outw(MC_RESET, ioaddr + MMU_CMD);
1952 smc->rx_ovrn = 0;
1953 }
1954 i = inw(ioaddr + INTERRUPT);
1955 SMC_SELECT_BANK(0);
1956 media = inw(ioaddr + EPH) & EPH_LINK_OK;
1957 SMC_SELECT_BANK(1);
1958 media |= (inw(ioaddr + CONFIG) & CFG_AUI_SELECT) ? 2 : 1;
1959
1960 /* Check for pending interrupt with watchdog flag set: with
1961 this, we can limp along even if the interrupt is blocked */
1962 if (smc->watchdog++ && ((i>>8) & i)) {
1963 if (!smc->fast_poll)
1964 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
1965 smc_interrupt(dev->irq, smc, NULL);
1966 smc->fast_poll = HZ;
1967 }
1968 if (smc->fast_poll) {
1969 smc->fast_poll--;
1970 smc->media.expires = jiffies + HZ/100;
1971 add_timer(&smc->media);
1972 SMC_SELECT_BANK(saved_bank);
1973 return;
1974 }
1975
1976 if (smc->cfg & CFG_MII_SELECT) {
1977 if (smc->mii_if.phy_id < 0)
1978 goto reschedule;
1979
1980 SMC_SELECT_BANK(3);
1981 link = mdio_read(dev, smc->mii_if.phy_id, 1);
1982 if (!link || (link == 0xffff)) {
1983 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
1984 smc->mii_if.phy_id = -1;
1985 goto reschedule;
1986 }
1987
1988 link &= 0x0004;
1989 if (link != smc->link_status) {
1990 u_short p = mdio_read(dev, smc->mii_if.phy_id, 5);
1991 printk(KERN_INFO "%s: %s link beat\n", dev->name,
1992 (link) ? "found" : "lost");
1993 smc->duplex = (((p & 0x0100) || ((p & 0x1c0) == 0x40))
1994 ? TCR_FDUPLX : 0);
1995 if (link) {
1996 printk(KERN_INFO "%s: autonegotiation complete: "
1997 "%sbaseT-%cD selected\n", dev->name,
1998 ((p & 0x0180) ? "100" : "10"),
1999 (smc->duplex ? 'F' : 'H'));
2000 }
2001 SMC_SELECT_BANK(0);
2002 outw(inw(ioaddr + TCR) | smc->duplex, ioaddr + TCR);
2003 smc->link_status = link;
2004 }
2005 goto reschedule;
2006 }
2007
2008 /* Ignore collisions unless we've had no rx's recently */
2009 if (jiffies - dev->last_rx > HZ) {
2010 if (smc->tx_err || (smc->media_status & EPH_16COL))
2011 media |= EPH_16COL;
2012 }
2013 smc->tx_err = 0;
2014
2015 if (media != smc->media_status) {
2016 if ((media & smc->media_status & 1) &&
2017 ((smc->media_status ^ media) & EPH_LINK_OK))
2018 printk(KERN_INFO "%s: %s link beat\n", dev->name,
2019 (smc->media_status & EPH_LINK_OK ? "lost" : "found"));
2020 else if ((media & smc->media_status & 2) &&
2021 ((smc->media_status ^ media) & EPH_16COL))
2022 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
2023 (media & EPH_16COL ? "problem" : "ok"));
2024 if (dev->if_port == 0) {
2025 if (media & 1) {
2026 if (media & EPH_LINK_OK)
2027 printk(KERN_INFO "%s: flipped to 10baseT\n",
2028 dev->name);
2029 else
2030 smc_set_xcvr(dev, 2);
2031 } else {
2032 if (media & EPH_16COL)
2033 smc_set_xcvr(dev, 1);
2034 else
2035 printk(KERN_INFO "%s: flipped to 10base2\n",
2036 dev->name);
2037 }
2038 }
2039 smc->media_status = media;
2040 }
2041
2042 reschedule:
2043 smc->media.expires = jiffies + HZ;
2044 add_timer(&smc->media);
2045 SMC_SELECT_BANK(saved_bank);
2046 }
2047
2048 static int smc_link_ok(struct net_device *dev)
2049 {
2050 kio_addr_t ioaddr = dev->base_addr;
2051 struct smc_private *smc = netdev_priv(dev);
2052
2053 if (smc->cfg & CFG_MII_SELECT) {
2054 return mii_link_ok(&smc->mii_if);
2055 } else {
2056 SMC_SELECT_BANK(0);
2057 return inw(ioaddr + EPH) & EPH_LINK_OK;
2058 }
2059 }
2060
2061 static int smc_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
2062 {
2063 u16 tmp;
2064 kio_addr_t ioaddr = dev->base_addr;
2065
2066 ecmd->supported = (SUPPORTED_TP | SUPPORTED_AUI |
2067 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full);
2068
2069 SMC_SELECT_BANK(1);
2070 tmp = inw(ioaddr + CONFIG);
2071 ecmd->port = (tmp & CFG_AUI_SELECT) ? PORT_AUI : PORT_TP;
2072 ecmd->transceiver = XCVR_INTERNAL;
2073 ecmd->speed = SPEED_10;
2074 ecmd->phy_address = ioaddr + MGMT;
2075
2076 SMC_SELECT_BANK(0);
2077 tmp = inw(ioaddr + TCR);
2078 ecmd->duplex = (tmp & TCR_FDUPLX) ? DUPLEX_FULL : DUPLEX_HALF;
2079
2080 return 0;
2081 }
2082
2083 static int smc_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
2084 {
2085 u16 tmp;
2086 kio_addr_t ioaddr = dev->base_addr;
2087
2088 if (ecmd->speed != SPEED_10)
2089 return -EINVAL;
2090 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
2091 return -EINVAL;
2092 if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI)
2093 return -EINVAL;
2094 if (ecmd->transceiver != XCVR_INTERNAL)
2095 return -EINVAL;
2096
2097 if (ecmd->port == PORT_AUI)
2098 smc_set_xcvr(dev, 1);
2099 else
2100 smc_set_xcvr(dev, 0);
2101
2102 SMC_SELECT_BANK(0);
2103 tmp = inw(ioaddr + TCR);
2104 if (ecmd->duplex == DUPLEX_FULL)
2105 tmp |= TCR_FDUPLX;
2106 else
2107 tmp &= ~TCR_FDUPLX;
2108 outw(tmp, ioaddr + TCR);
2109
2110 return 0;
2111 }
2112
2113 static int check_if_running(struct net_device *dev)
2114 {
2115 if (!netif_running(dev))
2116 return -EINVAL;
2117 return 0;
2118 }
2119
2120 static void smc_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2121 {
2122 strcpy(info->driver, DRV_NAME);
2123 strcpy(info->version, DRV_VERSION);
2124 }
2125
2126 static int smc_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2127 {
2128 struct smc_private *smc = netdev_priv(dev);
2129 kio_addr_t ioaddr = dev->base_addr;
2130 u16 saved_bank = inw(ioaddr + BANK_SELECT);
2131 int ret;
2132
2133 SMC_SELECT_BANK(3);
2134 spin_lock_irq(&smc->lock);
2135 if (smc->cfg & CFG_MII_SELECT)
2136 ret = mii_ethtool_gset(&smc->mii_if, ecmd);
2137 else
2138 ret = smc_netdev_get_ecmd(dev, ecmd);
2139 spin_unlock_irq(&smc->lock);
2140 SMC_SELECT_BANK(saved_bank);
2141 return ret;
2142 }
2143
2144 static int smc_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2145 {
2146 struct smc_private *smc = netdev_priv(dev);
2147 kio_addr_t ioaddr = dev->base_addr;
2148 u16 saved_bank = inw(ioaddr + BANK_SELECT);
2149 int ret;
2150
2151 SMC_SELECT_BANK(3);
2152 spin_lock_irq(&smc->lock);
2153 if (smc->cfg & CFG_MII_SELECT)
2154 ret = mii_ethtool_sset(&smc->mii_if, ecmd);
2155 else
2156 ret = smc_netdev_set_ecmd(dev, ecmd);
2157 spin_unlock_irq(&smc->lock);
2158 SMC_SELECT_BANK(saved_bank);
2159 return ret;
2160 }
2161
2162 static u32 smc_get_link(struct net_device *dev)
2163 {
2164 struct smc_private *smc = netdev_priv(dev);
2165 kio_addr_t ioaddr = dev->base_addr;
2166 u16 saved_bank = inw(ioaddr + BANK_SELECT);
2167 u32 ret;
2168
2169 SMC_SELECT_BANK(3);
2170 spin_lock_irq(&smc->lock);
2171 ret = smc_link_ok(dev);
2172 spin_unlock_irq(&smc->lock);
2173 SMC_SELECT_BANK(saved_bank);
2174 return ret;
2175 }
2176
2177 #ifdef PCMCIA_DEBUG
2178 static u32 smc_get_msglevel(struct net_device *dev)
2179 {
2180 return pc_debug;
2181 }
2182
2183 static void smc_set_msglevel(struct net_device *dev, u32 val)
2184 {
2185 pc_debug = val;
2186 }
2187 #endif
2188
2189 static int smc_nway_reset(struct net_device *dev)
2190 {
2191 struct smc_private *smc = netdev_priv(dev);
2192 if (smc->cfg & CFG_MII_SELECT) {
2193 kio_addr_t ioaddr = dev->base_addr;
2194 u16 saved_bank = inw(ioaddr + BANK_SELECT);
2195 int res;
2196
2197 SMC_SELECT_BANK(3);
2198 res = mii_nway_restart(&smc->mii_if);
2199 SMC_SELECT_BANK(saved_bank);
2200
2201 return res;
2202 } else
2203 return -EOPNOTSUPP;
2204 }
2205
2206 static struct ethtool_ops ethtool_ops = {
2207 .begin = check_if_running,
2208 .get_drvinfo = smc_get_drvinfo,
2209 .get_settings = smc_get_settings,
2210 .set_settings = smc_set_settings,
2211 .get_link = smc_get_link,
2212 #ifdef PCMCIA_DEBUG
2213 .get_msglevel = smc_get_msglevel,
2214 .set_msglevel = smc_set_msglevel,
2215 #endif
2216 .nway_reset = smc_nway_reset,
2217 };
2218
2219 static int smc_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
2220 {
2221 struct smc_private *smc = netdev_priv(dev);
2222 struct mii_ioctl_data *mii = if_mii(rq);
2223 int rc = 0;
2224 u16 saved_bank;
2225 kio_addr_t ioaddr = dev->base_addr;
2226
2227 if (!netif_running(dev))
2228 return -EINVAL;
2229
2230 spin_lock_irq(&smc->lock);
2231 saved_bank = inw(ioaddr + BANK_SELECT);
2232 SMC_SELECT_BANK(3);
2233 rc = generic_mii_ioctl(&smc->mii_if, mii, cmd, NULL);
2234 SMC_SELECT_BANK(saved_bank);
2235 spin_unlock_irq(&smc->lock);
2236 return rc;
2237 }
2238
2239 static struct pcmcia_driver smc91c92_cs_driver = {
2240 .owner = THIS_MODULE,
2241 .drv = {
2242 .name = "smc91c92_cs",
2243 },
2244 .attach = smc91c92_attach,
2245 .detach = smc91c92_detach,
2246 };
2247
2248 static int __init init_smc91c92_cs(void)
2249 {
2250 return pcmcia_register_driver(&smc91c92_cs_driver);
2251 }
2252
2253 static void __exit exit_smc91c92_cs(void)
2254 {
2255 pcmcia_unregister_driver(&smc91c92_cs_driver);
2256 BUG_ON(dev_list != NULL);
2257 }
2258
2259 module_init(init_smc91c92_cs);
2260 module_exit(exit_smc91c92_cs);
Verdex Pro support