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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/string.h>
34 #include <linux/timer.h>
35 #include <linux/interrupt.h>
36 #include <linux/delay.h>
37 #include <linux/crc32.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/skbuff.h>
41 #include <linux/if_arp.h>
42 #include <linux/ioport.h>
43 #include <linux/ethtool.h>
44 #include <linux/mii.h>
45 #include <linux/jiffies.h>
46 #include <linux/firmware.h>
47 
48 #include <pcmcia/cistpl.h>
49 #include <pcmcia/cisreg.h>
50 #include <pcmcia/ciscode.h>
51 #include <pcmcia/ds.h>
52 #include <pcmcia/ss.h>
53 
54 #include <asm/io.h>
55 #include <linux/uaccess.h>
56 
57 /*====================================================================*/
58 
59 static const char *if_names[] = { "auto", "10baseT", "10base2"};
60 
61 /* Firmware name */
62 #define FIRMWARE_NAME		"ositech/Xilinx7OD.bin"
63 
64 /* Module parameters */
65 
66 MODULE_DESCRIPTION("SMC 91c92 series PCMCIA ethernet driver");
67 MODULE_LICENSE("GPL");
68 MODULE_FIRMWARE(FIRMWARE_NAME);
69 
70 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
71 
72 /*
73   Transceiver/media type.
74    0 = auto
75    1 = 10baseT (and autoselect if #define AUTOSELECT),
76    2 = AUI/10base2,
77 */
78 INT_MODULE_PARM(if_port, 0);
79 
80 
81 #define DRV_NAME	"smc91c92_cs"
82 #define DRV_VERSION	"1.123"
83 
84 /*====================================================================*/
85 
86 /* Operational parameter that usually are not changed. */
87 
88 /* Time in jiffies before concluding Tx hung */
89 #define TX_TIMEOUT		((400*HZ)/1000)
90 
91 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
92 #define INTR_WORK		4
93 
94 /* Times to check the check the chip before concluding that it doesn't
95    currently have room for another Tx packet. */
96 #define MEMORY_WAIT_TIME       	8
97 
98 struct smc_private {
99 	struct pcmcia_device	*p_dev;
100     spinlock_t			lock;
101     u_short			manfid;
102     u_short			cardid;
103 
104     struct sk_buff		*saved_skb;
105     int				packets_waiting;
106     void			__iomem *base;
107     u_short			cfg;
108     struct timer_list		media;
109     int				watchdog, tx_err;
110     u_short			media_status;
111     u_short			fast_poll;
112     u_short			link_status;
113     struct mii_if_info		mii_if;
114     int				duplex;
115     int				rx_ovrn;
116     unsigned long		last_rx;
117 };
118 
119 /* Special definitions for Megahertz multifunction cards */
120 #define MEGAHERTZ_ISR		0x0380
121 
122 /* Special function registers for Motorola Mariner */
123 #define MOT_LAN			0x0000
124 #define MOT_UART		0x0020
125 #define MOT_EEPROM		0x20
126 
127 #define MOT_NORMAL \
128 (COR_LEVEL_REQ | COR_FUNC_ENA | COR_ADDR_DECODE | COR_IREQ_ENA)
129 
130 /* Special function registers for Ositech cards */
131 #define OSITECH_AUI_CTL		0x0c
132 #define OSITECH_PWRDOWN		0x0d
133 #define OSITECH_RESET		0x0e
134 #define OSITECH_ISR		0x0f
135 #define OSITECH_AUI_PWR		0x0c
136 #define OSITECH_RESET_ISR	0x0e
137 
138 #define OSI_AUI_PWR		0x40
139 #define OSI_LAN_PWRDOWN		0x02
140 #define OSI_MODEM_PWRDOWN	0x01
141 #define OSI_LAN_RESET		0x02
142 #define OSI_MODEM_RESET		0x01
143 
144 /* Symbolic constants for the SMC91c9* series chips, from Erik Stahlman. */
145 #define	BANK_SELECT		14		/* Window select register. */
146 #define SMC_SELECT_BANK(x)  { outw(x, ioaddr + BANK_SELECT); }
147 
148 /* Bank 0 registers. */
149 #define	TCR 		0	/* transmit control register */
150 #define	 TCR_CLEAR	0	/* do NOTHING */
151 #define  TCR_ENABLE	0x0001	/* if this is 1, we can transmit */
152 #define	 TCR_PAD_EN	0x0080	/* pads short packets to 64 bytes */
153 #define  TCR_MONCSN	0x0400  /* Monitor Carrier. */
154 #define  TCR_FDUPLX	0x0800  /* Full duplex mode. */
155 #define	 TCR_NORMAL TCR_ENABLE | TCR_PAD_EN
156 
157 #define EPH		2	/* Ethernet Protocol Handler report. */
158 #define  EPH_TX_SUC	0x0001
159 #define  EPH_SNGLCOL	0x0002
160 #define  EPH_MULCOL	0x0004
161 #define  EPH_LTX_MULT	0x0008
162 #define  EPH_16COL	0x0010
163 #define  EPH_SQET	0x0020
164 #define  EPH_LTX_BRD	0x0040
165 #define  EPH_TX_DEFR	0x0080
166 #define  EPH_LAT_COL	0x0200
167 #define  EPH_LOST_CAR	0x0400
168 #define  EPH_EXC_DEF	0x0800
169 #define  EPH_CTR_ROL	0x1000
170 #define  EPH_RX_OVRN	0x2000
171 #define  EPH_LINK_OK	0x4000
172 #define  EPH_TX_UNRN	0x8000
173 #define MEMINFO		8	/* Memory Information Register */
174 #define MEMCFG		10	/* Memory Configuration Register */
175 
176 /* Bank 1 registers. */
177 #define CONFIG			0
178 #define  CFG_MII_SELECT		0x8000	/* 91C100 only */
179 #define  CFG_NO_WAIT		0x1000
180 #define  CFG_FULL_STEP		0x0400
181 #define  CFG_SET_SQLCH		0x0200
182 #define  CFG_AUI_SELECT	 	0x0100
183 #define  CFG_16BIT		0x0080
184 #define  CFG_DIS_LINK		0x0040
185 #define  CFG_STATIC		0x0030
186 #define  CFG_IRQ_SEL_1		0x0004
187 #define  CFG_IRQ_SEL_0		0x0002
188 #define BASE_ADDR		2
189 #define	ADDR0			4
190 #define	GENERAL			10
191 #define	CONTROL			12
192 #define  CTL_STORE		0x0001
193 #define  CTL_RELOAD		0x0002
194 #define  CTL_EE_SELECT		0x0004
195 #define  CTL_TE_ENABLE		0x0020
196 #define  CTL_CR_ENABLE		0x0040
197 #define  CTL_LE_ENABLE		0x0080
198 #define  CTL_AUTO_RELEASE	0x0800
199 #define	 CTL_POWERDOWN		0x2000
200 
201 /* Bank 2 registers. */
202 #define MMU_CMD		0
203 #define	 MC_ALLOC	0x20  	/* or with number of 256 byte packets */
204 #define	 MC_RESET	0x40
205 #define  MC_RELEASE  	0x80  	/* remove and release the current rx packet */
206 #define  MC_FREEPKT  	0xA0  	/* Release packet in PNR register */
207 #define  MC_ENQUEUE	0xC0 	/* Enqueue the packet for transmit */
208 #define	PNR_ARR		2
209 #define FIFO_PORTS	4
210 #define  FP_RXEMPTY	0x8000
211 #define	POINTER		6
212 #define  PTR_AUTO_INC	0x0040
213 #define  PTR_READ	0x2000
214 #define	 PTR_AUTOINC 	0x4000
215 #define	 PTR_RCV	0x8000
216 #define	DATA_1		8
217 #define	INTERRUPT	12
218 #define  IM_RCV_INT		0x1
219 #define	 IM_TX_INT		0x2
220 #define	 IM_TX_EMPTY_INT	0x4
221 #define	 IM_ALLOC_INT		0x8
222 #define	 IM_RX_OVRN_INT		0x10
223 #define	 IM_EPH_INT		0x20
224 
225 #define	RCR		4
226 enum RxCfg { RxAllMulti = 0x0004, RxPromisc = 0x0002,
227 	     RxEnable = 0x0100, RxStripCRC = 0x0200};
228 #define  RCR_SOFTRESET	0x8000 	/* resets the chip */
229 #define	 RCR_STRIP_CRC	0x200	/* strips CRC */
230 #define  RCR_ENABLE	0x100	/* IFF this is set, we can receive packets */
231 #define  RCR_ALMUL	0x4 	/* receive all multicast packets */
232 #define	 RCR_PROMISC	0x2	/* enable promiscuous mode */
233 
234 /* the normal settings for the RCR register : */
235 #define	 RCR_NORMAL	(RCR_STRIP_CRC | RCR_ENABLE)
236 #define  RCR_CLEAR	0x0		/* set it to a base state */
237 #define	COUNTER		6
238 
239 /* BANK 3 -- not the same values as in smc9194! */
240 #define	MULTICAST0	0
241 #define	MULTICAST2	2
242 #define	MULTICAST4	4
243 #define	MULTICAST6	6
244 #define MGMT    	8
245 #define REVISION	0x0a
246 
247 /* Transmit status bits. */
248 #define TS_SUCCESS 0x0001
249 #define TS_16COL   0x0010
250 #define TS_LATCOL  0x0200
251 #define TS_LOSTCAR 0x0400
252 
253 /* Receive status bits. */
254 #define RS_ALGNERR	0x8000
255 #define RS_BADCRC	0x2000
256 #define RS_ODDFRAME	0x1000
257 #define RS_TOOLONG	0x0800
258 #define RS_TOOSHORT	0x0400
259 #define RS_MULTICAST	0x0001
260 #define RS_ERRORS	(RS_ALGNERR | RS_BADCRC | RS_TOOLONG | RS_TOOSHORT)
261 
262 #define set_bits(v, p) outw(inw(p)|(v), (p))
263 #define mask_bits(v, p) outw(inw(p)&(v), (p))
264 
265 /*====================================================================*/
266 
267 static void smc91c92_detach(struct pcmcia_device *p_dev);
268 static int smc91c92_config(struct pcmcia_device *link);
269 static void smc91c92_release(struct pcmcia_device *link);
270 
271 static int smc_open(struct net_device *dev);
272 static int smc_close(struct net_device *dev);
273 static int smc_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
274 static void smc_tx_timeout(struct net_device *dev);
275 static netdev_tx_t smc_start_xmit(struct sk_buff *skb,
276 					struct net_device *dev);
277 static irqreturn_t smc_interrupt(int irq, void *dev_id);
278 static void smc_rx(struct net_device *dev);
279 static void set_rx_mode(struct net_device *dev);
280 static int s9k_config(struct net_device *dev, struct ifmap *map);
281 static void smc_set_xcvr(struct net_device *dev, int if_port);
282 static void smc_reset(struct net_device *dev);
283 static void media_check(struct timer_list *t);
284 static void mdio_sync(unsigned int addr);
285 static int mdio_read(struct net_device *dev, int phy_id, int loc);
286 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value);
287 static int smc_link_ok(struct net_device *dev);
288 static const struct ethtool_ops ethtool_ops;
289 
290 static const struct net_device_ops smc_netdev_ops = {
291 	.ndo_open		= smc_open,
292 	.ndo_stop		= smc_close,
293 	.ndo_start_xmit		= smc_start_xmit,
294 	.ndo_tx_timeout 	= smc_tx_timeout,
295 	.ndo_set_config 	= s9k_config,
296 	.ndo_set_rx_mode	= set_rx_mode,
297 	.ndo_do_ioctl		= smc_ioctl,
298 	.ndo_set_mac_address 	= eth_mac_addr,
299 	.ndo_validate_addr	= eth_validate_addr,
300 };
301 
302 static int smc91c92_probe(struct pcmcia_device *link)
303 {
304     struct smc_private *smc;
305     struct net_device *dev;
306 
307     dev_dbg(&link->dev, "smc91c92_attach()\n");
308 
309     /* Create new ethernet device */
310     dev = alloc_etherdev(sizeof(struct smc_private));
311     if (!dev)
312 	return -ENOMEM;
313     smc = netdev_priv(dev);
314     smc->p_dev = link;
315     link->priv = dev;
316 
317     spin_lock_init(&smc->lock);
318 
319     /* The SMC91c92-specific entries in the device structure. */
320     dev->netdev_ops = &smc_netdev_ops;
321     dev->ethtool_ops = &ethtool_ops;
322     dev->watchdog_timeo = TX_TIMEOUT;
323 
324     smc->mii_if.dev = dev;
325     smc->mii_if.mdio_read = mdio_read;
326     smc->mii_if.mdio_write = mdio_write;
327     smc->mii_if.phy_id_mask = 0x1f;
328     smc->mii_if.reg_num_mask = 0x1f;
329 
330     return smc91c92_config(link);
331 } /* smc91c92_attach */
332 
333 static void smc91c92_detach(struct pcmcia_device *link)
334 {
335     struct net_device *dev = link->priv;
336 
337     dev_dbg(&link->dev, "smc91c92_detach\n");
338 
339     unregister_netdev(dev);
340 
341     smc91c92_release(link);
342 
343     free_netdev(dev);
344 } /* smc91c92_detach */
345 
346 /*====================================================================*/
347 
348 static int cvt_ascii_address(struct net_device *dev, char *s)
349 {
350     int i, j, da, c;
351 
352     if (strlen(s) != 12)
353 	return -1;
354     for (i = 0; i < 6; i++) {
355 	da = 0;
356 	for (j = 0; j < 2; j++) {
357 	    c = *s++;
358 	    da <<= 4;
359 	    da += ((c >= '0') && (c <= '9')) ?
360 		(c - '0') : ((c & 0x0f) + 9);
361 	}
362 	dev->dev_addr[i] = da;
363     }
364     return 0;
365 }
366 
367 /*====================================================================
368 
369     Configuration stuff for Megahertz cards
370 
371     mhz_3288_power() is used to power up a 3288's ethernet chip.
372     mhz_mfc_config() handles socket setup for multifunction (1144
373     and 3288) cards.  mhz_setup() gets a card's hardware ethernet
374     address.
375 
376 ======================================================================*/
377 
378 static int mhz_3288_power(struct pcmcia_device *link)
379 {
380     struct net_device *dev = link->priv;
381     struct smc_private *smc = netdev_priv(dev);
382     u_char tmp;
383 
384     /* Read the ISR twice... */
385     readb(smc->base+MEGAHERTZ_ISR);
386     udelay(5);
387     readb(smc->base+MEGAHERTZ_ISR);
388 
389     /* Pause 200ms... */
390     mdelay(200);
391 
392     /* Now read and write the COR... */
393     tmp = readb(smc->base + link->config_base + CISREG_COR);
394     udelay(5);
395     writeb(tmp, smc->base + link->config_base + CISREG_COR);
396 
397     return 0;
398 }
399 
400 static int mhz_mfc_config_check(struct pcmcia_device *p_dev, void *priv_data)
401 {
402 	int k;
403 	p_dev->io_lines = 16;
404 	p_dev->resource[1]->start = p_dev->resource[0]->start;
405 	p_dev->resource[1]->end = 8;
406 	p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
407 	p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
408 	p_dev->resource[0]->end = 16;
409 	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
410 	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
411 	for (k = 0; k < 0x400; k += 0x10) {
412 		if (k & 0x80)
413 			continue;
414 		p_dev->resource[0]->start = k ^ 0x300;
415 		if (!pcmcia_request_io(p_dev))
416 			return 0;
417 	}
418 	return -ENODEV;
419 }
420 
421 static int mhz_mfc_config(struct pcmcia_device *link)
422 {
423     struct net_device *dev = link->priv;
424     struct smc_private *smc = netdev_priv(dev);
425     unsigned int offset;
426     int i;
427 
428     link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ |
429 	    CONF_AUTO_SET_IO;
430 
431     /* The Megahertz combo cards have modem-like CIS entries, so
432        we have to explicitly try a bunch of port combinations. */
433     if (pcmcia_loop_config(link, mhz_mfc_config_check, NULL))
434 	    return -ENODEV;
435 
436     dev->base_addr = link->resource[0]->start;
437 
438     /* Allocate a memory window, for accessing the ISR */
439     link->resource[2]->flags = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
440     link->resource[2]->start = link->resource[2]->end = 0;
441     i = pcmcia_request_window(link, link->resource[2], 0);
442     if (i != 0)
443 	    return -ENODEV;
444 
445     smc->base = ioremap(link->resource[2]->start,
446 		    resource_size(link->resource[2]));
447     offset = (smc->manfid == MANFID_MOTOROLA) ? link->config_base : 0;
448     i = pcmcia_map_mem_page(link, link->resource[2], offset);
449     if ((i == 0) &&
450 	(smc->manfid == MANFID_MEGAHERTZ) &&
451 	(smc->cardid == PRODID_MEGAHERTZ_EM3288))
452 	    mhz_3288_power(link);
453 
454     return 0;
455 }
456 
457 static int pcmcia_get_versmac(struct pcmcia_device *p_dev,
458 			      tuple_t *tuple,
459 			      void *priv)
460 {
461 	struct net_device *dev = priv;
462 	cisparse_t parse;
463 	u8 *buf;
464 
465 	if (pcmcia_parse_tuple(tuple, &parse))
466 		return -EINVAL;
467 
468 	buf = parse.version_1.str + parse.version_1.ofs[3];
469 
470 	if ((parse.version_1.ns > 3) && (cvt_ascii_address(dev, buf) == 0))
471 		return 0;
472 
473 	return -EINVAL;
474 };
475 
476 static int mhz_setup(struct pcmcia_device *link)
477 {
478     struct net_device *dev = link->priv;
479     size_t len;
480     u8 *buf;
481     int rc;
482 
483     /* Read the station address from the CIS.  It is stored as the last
484        (fourth) string in the Version 1 Version/ID tuple. */
485     if ((link->prod_id[3]) &&
486 	(cvt_ascii_address(dev, link->prod_id[3]) == 0))
487 	    return 0;
488 
489     /* Workarounds for broken cards start here. */
490     /* Ugh -- the EM1144 card has two VERS_1 tuples!?! */
491     if (!pcmcia_loop_tuple(link, CISTPL_VERS_1, pcmcia_get_versmac, dev))
492 	    return 0;
493 
494     /* Another possibility: for the EM3288, in a special tuple */
495     rc = -1;
496     len = pcmcia_get_tuple(link, 0x81, &buf);
497     if (buf && len >= 13) {
498 	    buf[12] = '\0';
499 	    if (cvt_ascii_address(dev, buf) == 0)
500 		    rc = 0;
501     }
502     kfree(buf);
503 
504     return rc;
505 };
506 
507 /*======================================================================
508 
509     Configuration stuff for the Motorola Mariner
510 
511     mot_config() writes directly to the Mariner configuration
512     registers because the CIS is just bogus.
513 
514 ======================================================================*/
515 
516 static void mot_config(struct pcmcia_device *link)
517 {
518     struct net_device *dev = link->priv;
519     struct smc_private *smc = netdev_priv(dev);
520     unsigned int ioaddr = dev->base_addr;
521     unsigned int iouart = link->resource[1]->start;
522 
523     /* Set UART base address and force map with COR bit 1 */
524     writeb(iouart & 0xff,        smc->base + MOT_UART + CISREG_IOBASE_0);
525     writeb((iouart >> 8) & 0xff, smc->base + MOT_UART + CISREG_IOBASE_1);
526     writeb(MOT_NORMAL,           smc->base + MOT_UART + CISREG_COR);
527 
528     /* Set SMC base address and force map with COR bit 1 */
529     writeb(ioaddr & 0xff,        smc->base + MOT_LAN + CISREG_IOBASE_0);
530     writeb((ioaddr >> 8) & 0xff, smc->base + MOT_LAN + CISREG_IOBASE_1);
531     writeb(MOT_NORMAL,           smc->base + MOT_LAN + CISREG_COR);
532 
533     /* Wait for things to settle down */
534     mdelay(100);
535 }
536 
537 static int mot_setup(struct pcmcia_device *link)
538 {
539     struct net_device *dev = link->priv;
540     unsigned int ioaddr = dev->base_addr;
541     int i, wait, loop;
542     u_int addr;
543 
544     /* Read Ethernet address from Serial EEPROM */
545 
546     for (i = 0; i < 3; i++) {
547 	SMC_SELECT_BANK(2);
548 	outw(MOT_EEPROM + i, ioaddr + POINTER);
549 	SMC_SELECT_BANK(1);
550 	outw((CTL_RELOAD | CTL_EE_SELECT), ioaddr + CONTROL);
551 
552 	for (loop = wait = 0; loop < 200; loop++) {
553 	    udelay(10);
554 	    wait = ((CTL_RELOAD | CTL_STORE) & inw(ioaddr + CONTROL));
555 	    if (wait == 0) break;
556 	}
557 
558 	if (wait)
559 	    return -1;
560 
561 	addr = inw(ioaddr + GENERAL);
562 	dev->dev_addr[2*i]   = addr & 0xff;
563 	dev->dev_addr[2*i+1] = (addr >> 8) & 0xff;
564     }
565 
566     return 0;
567 }
568 
569 /*====================================================================*/
570 
571 static int smc_configcheck(struct pcmcia_device *p_dev, void *priv_data)
572 {
573 	p_dev->resource[0]->end = 16;
574 	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
575 	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
576 
577 	return pcmcia_request_io(p_dev);
578 }
579 
580 static int smc_config(struct pcmcia_device *link)
581 {
582     struct net_device *dev = link->priv;
583     int i;
584 
585     link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
586 
587     i = pcmcia_loop_config(link, smc_configcheck, NULL);
588     if (!i)
589 	    dev->base_addr = link->resource[0]->start;
590 
591     return i;
592 }
593 
594 
595 static int smc_setup(struct pcmcia_device *link)
596 {
597     struct net_device *dev = link->priv;
598 
599     /* Check for a LAN function extension tuple */
600     if (!pcmcia_get_mac_from_cis(link, dev))
601 	    return 0;
602 
603     /* Try the third string in the Version 1 Version/ID tuple. */
604     if (link->prod_id[2]) {
605 	    if (cvt_ascii_address(dev, link->prod_id[2]) == 0)
606 		    return 0;
607     }
608     return -1;
609 }
610 
611 /*====================================================================*/
612 
613 static int osi_config(struct pcmcia_device *link)
614 {
615     struct net_device *dev = link->priv;
616     static const unsigned int com[4] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
617     int i, j;
618 
619     link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ;
620     link->resource[0]->end = 64;
621     link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
622     link->resource[1]->end = 8;
623 
624     /* Enable Hard Decode, LAN, Modem */
625     link->io_lines = 16;
626     link->config_index = 0x23;
627 
628     for (i = j = 0; j < 4; j++) {
629 	link->resource[1]->start = com[j];
630 	i = pcmcia_request_io(link);
631 	if (i == 0)
632 		break;
633     }
634     if (i != 0) {
635 	/* Fallback: turn off hard decode */
636 	link->config_index = 0x03;
637 	link->resource[1]->end = 0;
638 	i = pcmcia_request_io(link);
639     }
640     dev->base_addr = link->resource[0]->start + 0x10;
641     return i;
642 }
643 
644 static int osi_load_firmware(struct pcmcia_device *link)
645 {
646 	const struct firmware *fw;
647 	int i, err;
648 
649 	err = request_firmware(&fw, FIRMWARE_NAME, &link->dev);
650 	if (err) {
651 		pr_err("Failed to load firmware \"%s\"\n", FIRMWARE_NAME);
652 		return err;
653 	}
654 
655 	/* Download the Seven of Diamonds firmware */
656 	for (i = 0; i < fw->size; i++) {
657 	    outb(fw->data[i], link->resource[0]->start + 2);
658 	    udelay(50);
659 	}
660 	release_firmware(fw);
661 	return err;
662 }
663 
664 static int pcmcia_osi_mac(struct pcmcia_device *p_dev,
665 			  tuple_t *tuple,
666 			  void *priv)
667 {
668 	struct net_device *dev = priv;
669 	int i;
670 
671 	if (tuple->TupleDataLen < 8)
672 		return -EINVAL;
673 	if (tuple->TupleData[0] != 0x04)
674 		return -EINVAL;
675 	for (i = 0; i < 6; i++)
676 		dev->dev_addr[i] = tuple->TupleData[i+2];
677 	return 0;
678 };
679 
680 
681 static int osi_setup(struct pcmcia_device *link, u_short manfid, u_short cardid)
682 {
683     struct net_device *dev = link->priv;
684     int rc;
685 
686     /* Read the station address from tuple 0x90, subtuple 0x04 */
687     if (pcmcia_loop_tuple(link, 0x90, pcmcia_osi_mac, dev))
688 	    return -1;
689 
690     if (((manfid == MANFID_OSITECH) &&
691 	 (cardid == PRODID_OSITECH_SEVEN)) ||
692 	((manfid == MANFID_PSION) &&
693 	 (cardid == PRODID_PSION_NET100))) {
694 	rc = osi_load_firmware(link);
695 	if (rc)
696 		return rc;
697     } else if (manfid == MANFID_OSITECH) {
698 	/* Make sure both functions are powered up */
699 	set_bits(0x300, link->resource[0]->start + OSITECH_AUI_PWR);
700 	/* Now, turn on the interrupt for both card functions */
701 	set_bits(0x300, link->resource[0]->start + OSITECH_RESET_ISR);
702 	dev_dbg(&link->dev, "AUI/PWR: %4.4x RESET/ISR: %4.4x\n",
703 	      inw(link->resource[0]->start + OSITECH_AUI_PWR),
704 	      inw(link->resource[0]->start + OSITECH_RESET_ISR));
705     }
706     return 0;
707 }
708 
709 static int smc91c92_suspend(struct pcmcia_device *link)
710 {
711 	struct net_device *dev = link->priv;
712 
713 	if (link->open)
714 		netif_device_detach(dev);
715 
716 	return 0;
717 }
718 
719 static int smc91c92_resume(struct pcmcia_device *link)
720 {
721 	struct net_device *dev = link->priv;
722 	struct smc_private *smc = netdev_priv(dev);
723 	int i;
724 
725 	if ((smc->manfid == MANFID_MEGAHERTZ) &&
726 	    (smc->cardid == PRODID_MEGAHERTZ_EM3288))
727 		mhz_3288_power(link);
728 	if (smc->manfid == MANFID_MOTOROLA)
729 		mot_config(link);
730 	if ((smc->manfid == MANFID_OSITECH) &&
731 	    (smc->cardid != PRODID_OSITECH_SEVEN)) {
732 		/* Power up the card and enable interrupts */
733 		set_bits(0x0300, dev->base_addr-0x10+OSITECH_AUI_PWR);
734 		set_bits(0x0300, dev->base_addr-0x10+OSITECH_RESET_ISR);
735 	}
736 	if (((smc->manfid == MANFID_OSITECH) &&
737 	     (smc->cardid == PRODID_OSITECH_SEVEN)) ||
738 	    ((smc->manfid == MANFID_PSION) &&
739 	     (smc->cardid == PRODID_PSION_NET100))) {
740 		i = osi_load_firmware(link);
741 		if (i) {
742 			netdev_err(dev, "Failed to load firmware\n");
743 			return i;
744 		}
745 	}
746 	if (link->open) {
747 		smc_reset(dev);
748 		netif_device_attach(dev);
749 	}
750 
751 	return 0;
752 }
753 
754 
755 /*======================================================================
756 
757     This verifies that the chip is some SMC91cXX variant, and returns
758     the revision code if successful.  Otherwise, it returns -ENODEV.
759 
760 ======================================================================*/
761 
762 static int check_sig(struct pcmcia_device *link)
763 {
764     struct net_device *dev = link->priv;
765     unsigned int ioaddr = dev->base_addr;
766     int width;
767     u_short s;
768 
769     SMC_SELECT_BANK(1);
770     if (inw(ioaddr + BANK_SELECT) >> 8 != 0x33) {
771 	/* Try powering up the chip */
772 	outw(0, ioaddr + CONTROL);
773 	mdelay(55);
774     }
775 
776     /* Try setting bus width */
777     width = (link->resource[0]->flags == IO_DATA_PATH_WIDTH_AUTO);
778     s = inb(ioaddr + CONFIG);
779     if (width)
780 	s |= CFG_16BIT;
781     else
782 	s &= ~CFG_16BIT;
783     outb(s, ioaddr + CONFIG);
784 
785     /* Check Base Address Register to make sure bus width is OK */
786     s = inw(ioaddr + BASE_ADDR);
787     if ((inw(ioaddr + BANK_SELECT) >> 8 == 0x33) &&
788 	((s >> 8) != (s & 0xff))) {
789 	SMC_SELECT_BANK(3);
790 	s = inw(ioaddr + REVISION);
791 	return s & 0xff;
792     }
793 
794     if (width) {
795 	    netdev_info(dev, "using 8-bit IO window\n");
796 
797 	    smc91c92_suspend(link);
798 	    pcmcia_fixup_iowidth(link);
799 	    smc91c92_resume(link);
800 	    return check_sig(link);
801     }
802     return -ENODEV;
803 }
804 
805 static int smc91c92_config(struct pcmcia_device *link)
806 {
807     struct net_device *dev = link->priv;
808     struct smc_private *smc = netdev_priv(dev);
809     char *name;
810     int i, rev, j = 0;
811     unsigned int ioaddr;
812     u_long mir;
813 
814     dev_dbg(&link->dev, "smc91c92_config\n");
815 
816     smc->manfid = link->manf_id;
817     smc->cardid = link->card_id;
818 
819     if ((smc->manfid == MANFID_OSITECH) &&
820 	(smc->cardid != PRODID_OSITECH_SEVEN)) {
821 	i = osi_config(link);
822     } else if ((smc->manfid == MANFID_MOTOROLA) ||
823 	       ((smc->manfid == MANFID_MEGAHERTZ) &&
824 		((smc->cardid == PRODID_MEGAHERTZ_VARIOUS) ||
825 		 (smc->cardid == PRODID_MEGAHERTZ_EM3288)))) {
826 	i = mhz_mfc_config(link);
827     } else {
828 	i = smc_config(link);
829     }
830     if (i)
831 	    goto config_failed;
832 
833     i = pcmcia_request_irq(link, smc_interrupt);
834     if (i)
835 	    goto config_failed;
836     i = pcmcia_enable_device(link);
837     if (i)
838 	    goto config_failed;
839 
840     if (smc->manfid == MANFID_MOTOROLA)
841 	mot_config(link);
842 
843     dev->irq = link->irq;
844 
845     if ((if_port >= 0) && (if_port <= 2))
846 	dev->if_port = if_port;
847     else
848 	dev_notice(&link->dev, "invalid if_port requested\n");
849 
850     switch (smc->manfid) {
851     case MANFID_OSITECH:
852     case MANFID_PSION:
853 	i = osi_setup(link, smc->manfid, smc->cardid); break;
854     case MANFID_SMC:
855     case MANFID_NEW_MEDIA:
856 	i = smc_setup(link); break;
857     case 0x128: /* For broken Megahertz cards */
858     case MANFID_MEGAHERTZ:
859 	i = mhz_setup(link); break;
860     case MANFID_MOTOROLA:
861     default: /* get the hw address from EEPROM */
862 	i = mot_setup(link); break;
863     }
864 
865     if (i != 0) {
866 	dev_notice(&link->dev, "Unable to find hardware address.\n");
867 	goto config_failed;
868     }
869 
870     smc->duplex = 0;
871     smc->rx_ovrn = 0;
872 
873     rev = check_sig(link);
874     name = "???";
875     if (rev > 0)
876 	switch (rev >> 4) {
877 	case 3: name = "92"; break;
878 	case 4: name = ((rev & 15) >= 6) ? "96" : "94"; break;
879 	case 5: name = "95"; break;
880 	case 7: name = "100"; break;
881 	case 8: name = "100-FD"; break;
882 	case 9: name = "110"; break;
883 	}
884 
885     ioaddr = dev->base_addr;
886     if (rev > 0) {
887 	u_long mcr;
888 	SMC_SELECT_BANK(0);
889 	mir = inw(ioaddr + MEMINFO) & 0xff;
890 	if (mir == 0xff) mir++;
891 	/* Get scale factor for memory size */
892 	mcr = ((rev >> 4) > 3) ? inw(ioaddr + MEMCFG) : 0x0200;
893 	mir *= 128 * (1<<((mcr >> 9) & 7));
894 	SMC_SELECT_BANK(1);
895 	smc->cfg = inw(ioaddr + CONFIG) & ~CFG_AUI_SELECT;
896 	smc->cfg |= CFG_NO_WAIT | CFG_16BIT | CFG_STATIC;
897 	if (smc->manfid == MANFID_OSITECH)
898 	    smc->cfg |= CFG_IRQ_SEL_1 | CFG_IRQ_SEL_0;
899 	if ((rev >> 4) >= 7)
900 	    smc->cfg |= CFG_MII_SELECT;
901     } else
902 	mir = 0;
903 
904     if (smc->cfg & CFG_MII_SELECT) {
905 	SMC_SELECT_BANK(3);
906 
907 	for (i = 0; i < 32; i++) {
908 	    j = mdio_read(dev, i, 1);
909 	    if ((j != 0) && (j != 0xffff)) break;
910 	}
911 	smc->mii_if.phy_id = (i < 32) ? i : -1;
912 
913 	SMC_SELECT_BANK(0);
914     }
915 
916     SET_NETDEV_DEV(dev, &link->dev);
917 
918     if (register_netdev(dev) != 0) {
919 	dev_err(&link->dev, "register_netdev() failed\n");
920 	goto config_undo;
921     }
922 
923     netdev_info(dev, "smc91c%s rev %d: io %#3lx, irq %d, hw_addr %pM\n",
924 		name, (rev & 0x0f), dev->base_addr, dev->irq, dev->dev_addr);
925 
926     if (rev > 0) {
927 	if (mir & 0x3ff)
928 	    netdev_info(dev, "  %lu byte", mir);
929 	else
930 	    netdev_info(dev, "  %lu kb", mir>>10);
931 	pr_cont(" buffer, %s xcvr\n",
932 		(smc->cfg & CFG_MII_SELECT) ? "MII" : if_names[dev->if_port]);
933     }
934 
935     if (smc->cfg & CFG_MII_SELECT) {
936 	if (smc->mii_if.phy_id != -1) {
937 	    netdev_dbg(dev, "  MII transceiver at index %d, status %x\n",
938 		       smc->mii_if.phy_id, j);
939 	} else {
940 	    netdev_notice(dev, "  No MII transceivers found!\n");
941 	}
942     }
943     return 0;
944 
945 config_undo:
946     unregister_netdev(dev);
947 config_failed:
948     smc91c92_release(link);
949     free_netdev(dev);
950     return -ENODEV;
951 } /* smc91c92_config */
952 
953 static void smc91c92_release(struct pcmcia_device *link)
954 {
955 	dev_dbg(&link->dev, "smc91c92_release\n");
956 	if (link->resource[2]->end) {
957 		struct net_device *dev = link->priv;
958 		struct smc_private *smc = netdev_priv(dev);
959 		iounmap(smc->base);
960 	}
961 	pcmcia_disable_device(link);
962 }
963 
964 /*======================================================================
965 
966     MII interface support for SMC91cXX based cards
967 ======================================================================*/
968 
969 #define MDIO_SHIFT_CLK		0x04
970 #define MDIO_DATA_OUT		0x01
971 #define MDIO_DIR_WRITE		0x08
972 #define MDIO_DATA_WRITE0	(MDIO_DIR_WRITE)
973 #define MDIO_DATA_WRITE1	(MDIO_DIR_WRITE | MDIO_DATA_OUT)
974 #define MDIO_DATA_READ		0x02
975 
976 static void mdio_sync(unsigned int addr)
977 {
978     int bits;
979     for (bits = 0; bits < 32; bits++) {
980 	outb(MDIO_DATA_WRITE1, addr);
981 	outb(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
982     }
983 }
984 
985 static int mdio_read(struct net_device *dev, int phy_id, int loc)
986 {
987     unsigned int addr = dev->base_addr + MGMT;
988     u_int cmd = (0x06<<10)|(phy_id<<5)|loc;
989     int i, retval = 0;
990 
991     mdio_sync(addr);
992     for (i = 13; i >= 0; i--) {
993 	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
994 	outb(dat, addr);
995 	outb(dat | MDIO_SHIFT_CLK, addr);
996     }
997     for (i = 19; i > 0; i--) {
998 	outb(0, addr);
999 	retval = (retval << 1) | ((inb(addr) & MDIO_DATA_READ) != 0);
1000 	outb(MDIO_SHIFT_CLK, addr);
1001     }
1002     return (retval>>1) & 0xffff;
1003 }
1004 
1005 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value)
1006 {
1007     unsigned int addr = dev->base_addr + MGMT;
1008     u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
1009     int i;
1010 
1011     mdio_sync(addr);
1012     for (i = 31; i >= 0; i--) {
1013 	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
1014 	outb(dat, addr);
1015 	outb(dat | MDIO_SHIFT_CLK, addr);
1016     }
1017     for (i = 1; i >= 0; i--) {
1018 	outb(0, addr);
1019 	outb(MDIO_SHIFT_CLK, addr);
1020     }
1021 }
1022 
1023 /*======================================================================
1024 
1025     The driver core code, most of which should be common with a
1026     non-PCMCIA implementation.
1027 
1028 ======================================================================*/
1029 
1030 #ifdef PCMCIA_DEBUG
1031 static void smc_dump(struct net_device *dev)
1032 {
1033     unsigned int ioaddr = dev->base_addr;
1034     u_short i, w, save;
1035     save = inw(ioaddr + BANK_SELECT);
1036     for (w = 0; w < 4; w++) {
1037 	SMC_SELECT_BANK(w);
1038 	netdev_dbg(dev, "bank %d: ", w);
1039 	for (i = 0; i < 14; i += 2)
1040 	    pr_cont(" %04x", inw(ioaddr + i));
1041 	pr_cont("\n");
1042     }
1043     outw(save, ioaddr + BANK_SELECT);
1044 }
1045 #endif
1046 
1047 static int smc_open(struct net_device *dev)
1048 {
1049     struct smc_private *smc = netdev_priv(dev);
1050     struct pcmcia_device *link = smc->p_dev;
1051 
1052     dev_dbg(&link->dev, "%s: smc_open(%p), ID/Window %4.4x.\n",
1053 	  dev->name, dev, inw(dev->base_addr + BANK_SELECT));
1054 #ifdef PCMCIA_DEBUG
1055     smc_dump(dev);
1056 #endif
1057 
1058     /* Check that the PCMCIA card is still here. */
1059     if (!pcmcia_dev_present(link))
1060 	return -ENODEV;
1061     /* Physical device present signature. */
1062     if (check_sig(link) < 0) {
1063 	netdev_info(dev, "Yikes!  Bad chip signature!\n");
1064 	return -ENODEV;
1065     }
1066     link->open++;
1067 
1068     netif_start_queue(dev);
1069     smc->saved_skb = NULL;
1070     smc->packets_waiting = 0;
1071 
1072     smc_reset(dev);
1073     timer_setup(&smc->media, media_check, 0);
1074     mod_timer(&smc->media, jiffies + HZ);
1075 
1076     return 0;
1077 } /* smc_open */
1078 
1079 /*====================================================================*/
1080 
1081 static int smc_close(struct net_device *dev)
1082 {
1083     struct smc_private *smc = netdev_priv(dev);
1084     struct pcmcia_device *link = smc->p_dev;
1085     unsigned int ioaddr = dev->base_addr;
1086 
1087     dev_dbg(&link->dev, "%s: smc_close(), status %4.4x.\n",
1088 	  dev->name, inw(ioaddr + BANK_SELECT));
1089 
1090     netif_stop_queue(dev);
1091 
1092     /* Shut off all interrupts, and turn off the Tx and Rx sections.
1093        Don't bother to check for chip present. */
1094     SMC_SELECT_BANK(2);	/* Nominally paranoia, but do no assume... */
1095     outw(0, ioaddr + INTERRUPT);
1096     SMC_SELECT_BANK(0);
1097     mask_bits(0xff00, ioaddr + RCR);
1098     mask_bits(0xff00, ioaddr + TCR);
1099 
1100     /* Put the chip into power-down mode. */
1101     SMC_SELECT_BANK(1);
1102     outw(CTL_POWERDOWN, ioaddr + CONTROL );
1103 
1104     link->open--;
1105     del_timer_sync(&smc->media);
1106 
1107     return 0;
1108 } /* smc_close */
1109 
1110 /*======================================================================
1111 
1112    Transfer a packet to the hardware and trigger the packet send.
1113    This may be called at either from either the Tx queue code
1114    or the interrupt handler.
1115 
1116 ======================================================================*/
1117 
1118 static void smc_hardware_send_packet(struct net_device * dev)
1119 {
1120     struct smc_private *smc = netdev_priv(dev);
1121     struct sk_buff *skb = smc->saved_skb;
1122     unsigned int ioaddr = dev->base_addr;
1123     u_char packet_no;
1124 
1125     if (!skb) {
1126 	netdev_err(dev, "In XMIT with no packet to send\n");
1127 	return;
1128     }
1129 
1130     /* There should be a packet slot waiting. */
1131     packet_no = inw(ioaddr + PNR_ARR) >> 8;
1132     if (packet_no & 0x80) {
1133 	/* If not, there is a hardware problem!  Likely an ejected card. */
1134 	netdev_warn(dev, "hardware Tx buffer allocation failed, status %#2.2x\n",
1135 		    packet_no);
1136 	dev_kfree_skb_irq(skb);
1137 	smc->saved_skb = NULL;
1138 	netif_start_queue(dev);
1139 	return;
1140     }
1141 
1142     dev->stats.tx_bytes += skb->len;
1143     /* The card should use the just-allocated buffer. */
1144     outw(packet_no, ioaddr + PNR_ARR);
1145     /* point to the beginning of the packet */
1146     outw(PTR_AUTOINC , ioaddr + POINTER);
1147 
1148     /* Send the packet length (+6 for status, length and ctl byte)
1149        and the status word (set to zeros). */
1150     {
1151 	u_char *buf = skb->data;
1152 	u_int length = skb->len; /* The chip will pad to ethernet min. */
1153 
1154 	netdev_dbg(dev, "Trying to xmit packet of length %d\n", length);
1155 
1156 	/* send the packet length: +6 for status word, length, and ctl */
1157 	outw(0, ioaddr + DATA_1);
1158 	outw(length + 6, ioaddr + DATA_1);
1159 	outsw(ioaddr + DATA_1, buf, length >> 1);
1160 
1161 	/* The odd last byte, if there is one, goes in the control word. */
1162 	outw((length & 1) ? 0x2000 | buf[length-1] : 0, ioaddr + DATA_1);
1163     }
1164 
1165     /* Enable the Tx interrupts, both Tx (TxErr) and TxEmpty. */
1166     outw(((IM_TX_INT|IM_TX_EMPTY_INT)<<8) |
1167 	 (inw(ioaddr + INTERRUPT) & 0xff00),
1168 	 ioaddr + INTERRUPT);
1169 
1170     /* The chip does the rest of the work. */
1171     outw(MC_ENQUEUE , ioaddr + MMU_CMD);
1172 
1173     smc->saved_skb = NULL;
1174     dev_kfree_skb_irq(skb);
1175     netif_trans_update(dev);
1176     netif_start_queue(dev);
1177 }
1178 
1179 /*====================================================================*/
1180 
1181 static void smc_tx_timeout(struct net_device *dev)
1182 {
1183     struct smc_private *smc = netdev_priv(dev);
1184     unsigned int ioaddr = dev->base_addr;
1185 
1186     netdev_notice(dev, "transmit timed out, Tx_status %2.2x status %4.4x.\n",
1187 		  inw(ioaddr)&0xff, inw(ioaddr + 2));
1188     dev->stats.tx_errors++;
1189     smc_reset(dev);
1190     netif_trans_update(dev); /* prevent tx timeout */
1191     smc->saved_skb = NULL;
1192     netif_wake_queue(dev);
1193 }
1194 
1195 static netdev_tx_t smc_start_xmit(struct sk_buff *skb,
1196 					struct net_device *dev)
1197 {
1198     struct smc_private *smc = netdev_priv(dev);
1199     unsigned int ioaddr = dev->base_addr;
1200     u_short num_pages;
1201     short time_out, ir;
1202     unsigned long flags;
1203 
1204     netif_stop_queue(dev);
1205 
1206     netdev_dbg(dev, "smc_start_xmit(length = %d) called, status %04x\n",
1207 	       skb->len, inw(ioaddr + 2));
1208 
1209     if (smc->saved_skb) {
1210 	/* THIS SHOULD NEVER HAPPEN. */
1211 	dev->stats.tx_aborted_errors++;
1212 	netdev_dbg(dev, "Internal error -- sent packet while busy\n");
1213 	return NETDEV_TX_BUSY;
1214     }
1215     smc->saved_skb = skb;
1216 
1217     num_pages = skb->len >> 8;
1218 
1219     if (num_pages > 7) {
1220 	netdev_err(dev, "Far too big packet error: %d pages\n", num_pages);
1221 	dev_kfree_skb (skb);
1222 	smc->saved_skb = NULL;
1223 	dev->stats.tx_dropped++;
1224 	return NETDEV_TX_OK;		/* Do not re-queue this packet. */
1225     }
1226     /* A packet is now waiting. */
1227     smc->packets_waiting++;
1228 
1229     spin_lock_irqsave(&smc->lock, flags);
1230     SMC_SELECT_BANK(2);	/* Paranoia, we should always be in window 2 */
1231 
1232     /* need MC_RESET to keep the memory consistent. errata? */
1233     if (smc->rx_ovrn) {
1234 	outw(MC_RESET, ioaddr + MMU_CMD);
1235 	smc->rx_ovrn = 0;
1236     }
1237 
1238     /* Allocate the memory; send the packet now if we win. */
1239     outw(MC_ALLOC | num_pages, ioaddr + MMU_CMD);
1240     for (time_out = MEMORY_WAIT_TIME; time_out >= 0; time_out--) {
1241 	ir = inw(ioaddr+INTERRUPT);
1242 	if (ir & IM_ALLOC_INT) {
1243 	    /* Acknowledge the interrupt, send the packet. */
1244 	    outw((ir&0xff00) | IM_ALLOC_INT, ioaddr + INTERRUPT);
1245 	    smc_hardware_send_packet(dev);	/* Send the packet now.. */
1246 	    spin_unlock_irqrestore(&smc->lock, flags);
1247 	    return NETDEV_TX_OK;
1248 	}
1249     }
1250 
1251     /* Otherwise defer until the Tx-space-allocated interrupt. */
1252     netdev_dbg(dev, "memory allocation deferred.\n");
1253     outw((IM_ALLOC_INT << 8) | (ir & 0xff00), ioaddr + INTERRUPT);
1254     spin_unlock_irqrestore(&smc->lock, flags);
1255 
1256     return NETDEV_TX_OK;
1257 }
1258 
1259 /*======================================================================
1260 
1261     Handle a Tx anomalous event.  Entered while in Window 2.
1262 
1263 ======================================================================*/
1264 
1265 static void smc_tx_err(struct net_device * dev)
1266 {
1267     struct smc_private *smc = netdev_priv(dev);
1268     unsigned int ioaddr = dev->base_addr;
1269     int saved_packet = inw(ioaddr + PNR_ARR) & 0xff;
1270     int packet_no = inw(ioaddr + FIFO_PORTS) & 0x7f;
1271     int tx_status;
1272 
1273     /* select this as the packet to read from */
1274     outw(packet_no, ioaddr + PNR_ARR);
1275 
1276     /* read the first word from this packet */
1277     outw(PTR_AUTOINC | PTR_READ | 0, ioaddr + POINTER);
1278 
1279     tx_status = inw(ioaddr + DATA_1);
1280 
1281     dev->stats.tx_errors++;
1282     if (tx_status & TS_LOSTCAR) dev->stats.tx_carrier_errors++;
1283     if (tx_status & TS_LATCOL)  dev->stats.tx_window_errors++;
1284     if (tx_status & TS_16COL) {
1285 	dev->stats.tx_aborted_errors++;
1286 	smc->tx_err++;
1287     }
1288 
1289     if (tx_status & TS_SUCCESS) {
1290 	netdev_notice(dev, "Successful packet caused error interrupt?\n");
1291     }
1292     /* re-enable transmit */
1293     SMC_SELECT_BANK(0);
1294     outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1295     SMC_SELECT_BANK(2);
1296 
1297     outw(MC_FREEPKT, ioaddr + MMU_CMD); 	/* Free the packet memory. */
1298 
1299     /* one less packet waiting for me */
1300     smc->packets_waiting--;
1301 
1302     outw(saved_packet, ioaddr + PNR_ARR);
1303 }
1304 
1305 /*====================================================================*/
1306 
1307 static void smc_eph_irq(struct net_device *dev)
1308 {
1309     struct smc_private *smc = netdev_priv(dev);
1310     unsigned int ioaddr = dev->base_addr;
1311     u_short card_stats, ephs;
1312 
1313     SMC_SELECT_BANK(0);
1314     ephs = inw(ioaddr + EPH);
1315     netdev_dbg(dev, "Ethernet protocol handler interrupt, status %4.4x.\n",
1316 	       ephs);
1317     /* Could be a counter roll-over warning: update stats. */
1318     card_stats = inw(ioaddr + COUNTER);
1319     /* single collisions */
1320     dev->stats.collisions += card_stats & 0xF;
1321     card_stats >>= 4;
1322     /* multiple collisions */
1323     dev->stats.collisions += card_stats & 0xF;
1324 #if 0 		/* These are for when linux supports these statistics */
1325     card_stats >>= 4;			/* deferred */
1326     card_stats >>= 4;			/* excess deferred */
1327 #endif
1328     /* If we had a transmit error we must re-enable the transmitter. */
1329     outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1330 
1331     /* Clear a link error interrupt. */
1332     SMC_SELECT_BANK(1);
1333     outw(CTL_AUTO_RELEASE | 0x0000, ioaddr + CONTROL);
1334     outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1335 	 ioaddr + CONTROL);
1336     SMC_SELECT_BANK(2);
1337 }
1338 
1339 /*====================================================================*/
1340 
1341 static irqreturn_t smc_interrupt(int irq, void *dev_id)
1342 {
1343     struct net_device *dev = dev_id;
1344     struct smc_private *smc = netdev_priv(dev);
1345     unsigned int ioaddr;
1346     u_short saved_bank, saved_pointer, mask, status;
1347     unsigned int handled = 1;
1348     char bogus_cnt = INTR_WORK;		/* Work we are willing to do. */
1349 
1350     if (!netif_device_present(dev))
1351 	return IRQ_NONE;
1352 
1353     ioaddr = dev->base_addr;
1354 
1355     netdev_dbg(dev, "SMC91c92 interrupt %d at %#x.\n",
1356 	       irq, ioaddr);
1357 
1358     spin_lock(&smc->lock);
1359     smc->watchdog = 0;
1360     saved_bank = inw(ioaddr + BANK_SELECT);
1361     if ((saved_bank & 0xff00) != 0x3300) {
1362 	/* The device does not exist -- the card could be off-line, or
1363 	   maybe it has been ejected. */
1364 	netdev_dbg(dev, "SMC91c92 interrupt %d for non-existent/ejected device.\n",
1365 		   irq);
1366 	handled = 0;
1367 	goto irq_done;
1368     }
1369 
1370     SMC_SELECT_BANK(2);
1371     saved_pointer = inw(ioaddr + POINTER);
1372     mask = inw(ioaddr + INTERRUPT) >> 8;
1373     /* clear all interrupts */
1374     outw(0, ioaddr + INTERRUPT);
1375 
1376     do { /* read the status flag, and mask it */
1377 	status = inw(ioaddr + INTERRUPT) & 0xff;
1378 	netdev_dbg(dev, "Status is %#2.2x (mask %#2.2x).\n",
1379 		   status, mask);
1380 	if ((status & mask) == 0) {
1381 	    if (bogus_cnt == INTR_WORK)
1382 		handled = 0;
1383 	    break;
1384 	}
1385 	if (status & IM_RCV_INT) {
1386 	    /* Got a packet(s). */
1387 	    smc_rx(dev);
1388 	}
1389 	if (status & IM_TX_INT) {
1390 	    smc_tx_err(dev);
1391 	    outw(IM_TX_INT, ioaddr + INTERRUPT);
1392 	}
1393 	status &= mask;
1394 	if (status & IM_TX_EMPTY_INT) {
1395 	    outw(IM_TX_EMPTY_INT, ioaddr + INTERRUPT);
1396 	    mask &= ~IM_TX_EMPTY_INT;
1397 	    dev->stats.tx_packets += smc->packets_waiting;
1398 	    smc->packets_waiting = 0;
1399 	}
1400 	if (status & IM_ALLOC_INT) {
1401 	    /* Clear this interrupt so it doesn't happen again */
1402 	    mask &= ~IM_ALLOC_INT;
1403 
1404 	    smc_hardware_send_packet(dev);
1405 
1406 	    /* enable xmit interrupts based on this */
1407 	    mask |= (IM_TX_EMPTY_INT | IM_TX_INT);
1408 
1409 	    /* and let the card send more packets to me */
1410 	    netif_wake_queue(dev);
1411 	}
1412 	if (status & IM_RX_OVRN_INT) {
1413 	    dev->stats.rx_errors++;
1414 	    dev->stats.rx_fifo_errors++;
1415 	    if (smc->duplex)
1416 		smc->rx_ovrn = 1; /* need MC_RESET outside smc_interrupt */
1417 	    outw(IM_RX_OVRN_INT, ioaddr + INTERRUPT);
1418 	}
1419 	if (status & IM_EPH_INT)
1420 	    smc_eph_irq(dev);
1421     } while (--bogus_cnt);
1422 
1423     netdev_dbg(dev, "  Restoring saved registers mask %2.2x bank %4.4x pointer %4.4x.\n",
1424 	       mask, saved_bank, saved_pointer);
1425 
1426     /* restore state register */
1427     outw((mask<<8), ioaddr + INTERRUPT);
1428     outw(saved_pointer, ioaddr + POINTER);
1429     SMC_SELECT_BANK(saved_bank);
1430 
1431     netdev_dbg(dev, "Exiting interrupt IRQ%d.\n", irq);
1432 
1433 irq_done:
1434 
1435     if ((smc->manfid == MANFID_OSITECH) &&
1436 	(smc->cardid != PRODID_OSITECH_SEVEN)) {
1437 	/* Retrigger interrupt if needed */
1438 	mask_bits(0x00ff, ioaddr-0x10+OSITECH_RESET_ISR);
1439 	set_bits(0x0300, ioaddr-0x10+OSITECH_RESET_ISR);
1440     }
1441     if (smc->manfid == MANFID_MOTOROLA) {
1442 	u_char cor;
1443 	cor = readb(smc->base + MOT_UART + CISREG_COR);
1444 	writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_UART + CISREG_COR);
1445 	writeb(cor, smc->base + MOT_UART + CISREG_COR);
1446 	cor = readb(smc->base + MOT_LAN + CISREG_COR);
1447 	writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_LAN + CISREG_COR);
1448 	writeb(cor, smc->base + MOT_LAN + CISREG_COR);
1449     }
1450 
1451     if ((smc->base != NULL) &&  /* Megahertz MFC's */
1452 	(smc->manfid == MANFID_MEGAHERTZ) &&
1453 	(smc->cardid == PRODID_MEGAHERTZ_EM3288)) {
1454 
1455 	u_char tmp;
1456 	tmp = readb(smc->base+MEGAHERTZ_ISR);
1457 	tmp = readb(smc->base+MEGAHERTZ_ISR);
1458 
1459 	/* Retrigger interrupt if needed */
1460 	writeb(tmp, smc->base + MEGAHERTZ_ISR);
1461 	writeb(tmp, smc->base + MEGAHERTZ_ISR);
1462     }
1463 
1464     spin_unlock(&smc->lock);
1465     return IRQ_RETVAL(handled);
1466 }
1467 
1468 /*====================================================================*/
1469 
1470 static void smc_rx(struct net_device *dev)
1471 {
1472     unsigned int ioaddr = dev->base_addr;
1473     int rx_status;
1474     int packet_length;	/* Caution: not frame length, rather words
1475 			   to transfer from the chip. */
1476 
1477     /* Assertion: we are in Window 2. */
1478 
1479     if (inw(ioaddr + FIFO_PORTS) & FP_RXEMPTY) {
1480 	netdev_err(dev, "smc_rx() with nothing on Rx FIFO\n");
1481 	return;
1482     }
1483 
1484     /*  Reset the read pointer, and read the status and packet length. */
1485     outw(PTR_READ | PTR_RCV | PTR_AUTOINC, ioaddr + POINTER);
1486     rx_status = inw(ioaddr + DATA_1);
1487     packet_length = inw(ioaddr + DATA_1) & 0x07ff;
1488 
1489     netdev_dbg(dev, "Receive status %4.4x length %d.\n",
1490 	       rx_status, packet_length);
1491 
1492     if (!(rx_status & RS_ERRORS)) {
1493 	/* do stuff to make a new packet */
1494 	struct sk_buff *skb;
1495 	struct smc_private *smc = netdev_priv(dev);
1496 
1497 	/* Note: packet_length adds 5 or 6 extra bytes here! */
1498 	skb = netdev_alloc_skb(dev, packet_length+2);
1499 
1500 	if (skb == NULL) {
1501 	    netdev_dbg(dev, "Low memory, packet dropped.\n");
1502 	    dev->stats.rx_dropped++;
1503 	    outw(MC_RELEASE, ioaddr + MMU_CMD);
1504 	    return;
1505 	}
1506 
1507 	packet_length -= (rx_status & RS_ODDFRAME ? 5 : 6);
1508 	skb_reserve(skb, 2);
1509 	insw(ioaddr+DATA_1, skb_put(skb, packet_length),
1510 	     (packet_length+1)>>1);
1511 	skb->protocol = eth_type_trans(skb, dev);
1512 
1513 	netif_rx(skb);
1514 	smc->last_rx = jiffies;
1515 	dev->stats.rx_packets++;
1516 	dev->stats.rx_bytes += packet_length;
1517 	if (rx_status & RS_MULTICAST)
1518 	    dev->stats.multicast++;
1519     } else {
1520 	/* error ... */
1521 	dev->stats.rx_errors++;
1522 
1523 	if (rx_status & RS_ALGNERR)  dev->stats.rx_frame_errors++;
1524 	if (rx_status & (RS_TOOSHORT | RS_TOOLONG))
1525 	    dev->stats.rx_length_errors++;
1526 	if (rx_status & RS_BADCRC)	dev->stats.rx_crc_errors++;
1527     }
1528     /* Let the MMU free the memory of this packet. */
1529     outw(MC_RELEASE, ioaddr + MMU_CMD);
1530 }
1531 
1532 /*======================================================================
1533 
1534     Set the receive mode.
1535 
1536     This routine is used by both the protocol level to notify us of
1537     promiscuous/multicast mode changes, and by the open/reset code to
1538     initialize the Rx registers.  We always set the multicast list and
1539     leave the receiver running.
1540 
1541 ======================================================================*/
1542 
1543 static void set_rx_mode(struct net_device *dev)
1544 {
1545     unsigned int ioaddr = dev->base_addr;
1546     struct smc_private *smc = netdev_priv(dev);
1547     unsigned char multicast_table[8];
1548     unsigned long flags;
1549     u_short rx_cfg_setting;
1550     int i;
1551 
1552     memset(multicast_table, 0, sizeof(multicast_table));
1553 
1554     if (dev->flags & IFF_PROMISC) {
1555 	rx_cfg_setting = RxStripCRC | RxEnable | RxPromisc | RxAllMulti;
1556     } else if (dev->flags & IFF_ALLMULTI)
1557 	rx_cfg_setting = RxStripCRC | RxEnable | RxAllMulti;
1558     else {
1559 	if (!netdev_mc_empty(dev)) {
1560 	    struct netdev_hw_addr *ha;
1561 
1562 	    netdev_for_each_mc_addr(ha, dev) {
1563 		u_int position = ether_crc(6, ha->addr);
1564 		multicast_table[position >> 29] |= 1 << ((position >> 26) & 7);
1565 	    }
1566 	}
1567 	rx_cfg_setting = RxStripCRC | RxEnable;
1568     }
1569 
1570     /* Load MC table and Rx setting into the chip without interrupts. */
1571     spin_lock_irqsave(&smc->lock, flags);
1572     SMC_SELECT_BANK(3);
1573     for (i = 0; i < 8; i++)
1574 	outb(multicast_table[i], ioaddr + MULTICAST0 + i);
1575     SMC_SELECT_BANK(0);
1576     outw(rx_cfg_setting, ioaddr + RCR);
1577     SMC_SELECT_BANK(2);
1578     spin_unlock_irqrestore(&smc->lock, flags);
1579 }
1580 
1581 /*======================================================================
1582 
1583     Senses when a card's config changes. Here, it's coax or TP.
1584 
1585 ======================================================================*/
1586 
1587 static int s9k_config(struct net_device *dev, struct ifmap *map)
1588 {
1589     struct smc_private *smc = netdev_priv(dev);
1590     if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
1591 	if (smc->cfg & CFG_MII_SELECT)
1592 	    return -EOPNOTSUPP;
1593 	else if (map->port > 2)
1594 	    return -EINVAL;
1595 	dev->if_port = map->port;
1596 	netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]);
1597 	smc_reset(dev);
1598     }
1599     return 0;
1600 }
1601 
1602 /*======================================================================
1603 
1604     Reset the chip, reloading every register that might be corrupted.
1605 
1606 ======================================================================*/
1607 
1608 /*
1609   Set transceiver type, perhaps to something other than what the user
1610   specified in dev->if_port.
1611 */
1612 static void smc_set_xcvr(struct net_device *dev, int if_port)
1613 {
1614     struct smc_private *smc = netdev_priv(dev);
1615     unsigned int ioaddr = dev->base_addr;
1616     u_short saved_bank;
1617 
1618     saved_bank = inw(ioaddr + BANK_SELECT);
1619     SMC_SELECT_BANK(1);
1620     if (if_port == 2) {
1621 	outw(smc->cfg | CFG_AUI_SELECT, ioaddr + CONFIG);
1622 	if ((smc->manfid == MANFID_OSITECH) &&
1623 	    (smc->cardid != PRODID_OSITECH_SEVEN))
1624 	    set_bits(OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1625 	smc->media_status = ((dev->if_port == 0) ? 0x0001 : 0x0002);
1626     } else {
1627 	outw(smc->cfg, ioaddr + CONFIG);
1628 	if ((smc->manfid == MANFID_OSITECH) &&
1629 	    (smc->cardid != PRODID_OSITECH_SEVEN))
1630 	    mask_bits(~OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1631 	smc->media_status = ((dev->if_port == 0) ? 0x0012 : 0x4001);
1632     }
1633     SMC_SELECT_BANK(saved_bank);
1634 }
1635 
1636 static void smc_reset(struct net_device *dev)
1637 {
1638     unsigned int ioaddr = dev->base_addr;
1639     struct smc_private *smc = netdev_priv(dev);
1640     int i;
1641 
1642     netdev_dbg(dev, "smc91c92 reset called.\n");
1643 
1644     /* The first interaction must be a write to bring the chip out
1645        of sleep mode. */
1646     SMC_SELECT_BANK(0);
1647     /* Reset the chip. */
1648     outw(RCR_SOFTRESET, ioaddr + RCR);
1649     udelay(10);
1650 
1651     /* Clear the transmit and receive configuration registers. */
1652     outw(RCR_CLEAR, ioaddr + RCR);
1653     outw(TCR_CLEAR, ioaddr + TCR);
1654 
1655     /* Set the Window 1 control, configuration and station addr registers.
1656        No point in writing the I/O base register ;-> */
1657     SMC_SELECT_BANK(1);
1658     /* Automatically release successfully transmitted packets,
1659        Accept link errors, counter and Tx error interrupts. */
1660     outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1661 	 ioaddr + CONTROL);
1662     smc_set_xcvr(dev, dev->if_port);
1663     if ((smc->manfid == MANFID_OSITECH) &&
1664 	(smc->cardid != PRODID_OSITECH_SEVEN))
1665 	outw((dev->if_port == 2 ? OSI_AUI_PWR : 0) |
1666 	     (inw(ioaddr-0x10+OSITECH_AUI_PWR) & 0xff00),
1667 	     ioaddr - 0x10 + OSITECH_AUI_PWR);
1668 
1669     /* Fill in the physical address.  The databook is wrong about the order! */
1670     for (i = 0; i < 6; i += 2)
1671 	outw((dev->dev_addr[i+1]<<8)+dev->dev_addr[i],
1672 	     ioaddr + ADDR0 + i);
1673 
1674     /* Reset the MMU */
1675     SMC_SELECT_BANK(2);
1676     outw(MC_RESET, ioaddr + MMU_CMD);
1677     outw(0, ioaddr + INTERRUPT);
1678 
1679     /* Re-enable the chip. */
1680     SMC_SELECT_BANK(0);
1681     outw(((smc->cfg & CFG_MII_SELECT) ? 0 : TCR_MONCSN) |
1682 	 TCR_ENABLE | TCR_PAD_EN | smc->duplex, ioaddr + TCR);
1683     set_rx_mode(dev);
1684 
1685     if (smc->cfg & CFG_MII_SELECT) {
1686 	SMC_SELECT_BANK(3);
1687 
1688 	/* Reset MII */
1689 	mdio_write(dev, smc->mii_if.phy_id, 0, 0x8000);
1690 
1691 	/* Advertise 100F, 100H, 10F, 10H */
1692 	mdio_write(dev, smc->mii_if.phy_id, 4, 0x01e1);
1693 
1694 	/* Restart MII autonegotiation */
1695 	mdio_write(dev, smc->mii_if.phy_id, 0, 0x0000);
1696 	mdio_write(dev, smc->mii_if.phy_id, 0, 0x1200);
1697     }
1698 
1699     /* Enable interrupts. */
1700     SMC_SELECT_BANK(2);
1701     outw((IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) << 8,
1702 	 ioaddr + INTERRUPT);
1703 }
1704 
1705 /*======================================================================
1706 
1707     Media selection timer routine
1708 
1709 ======================================================================*/
1710 
1711 static void media_check(struct timer_list *t)
1712 {
1713     struct smc_private *smc = from_timer(smc, t, media);
1714     struct net_device *dev = smc->mii_if.dev;
1715     unsigned int ioaddr = dev->base_addr;
1716     u_short i, media, saved_bank;
1717     u_short link;
1718     unsigned long flags;
1719 
1720     spin_lock_irqsave(&smc->lock, flags);
1721 
1722     saved_bank = inw(ioaddr + BANK_SELECT);
1723 
1724     if (!netif_device_present(dev))
1725 	goto reschedule;
1726 
1727     SMC_SELECT_BANK(2);
1728 
1729     /* need MC_RESET to keep the memory consistent. errata? */
1730     if (smc->rx_ovrn) {
1731 	outw(MC_RESET, ioaddr + MMU_CMD);
1732 	smc->rx_ovrn = 0;
1733     }
1734     i = inw(ioaddr + INTERRUPT);
1735     SMC_SELECT_BANK(0);
1736     media = inw(ioaddr + EPH) & EPH_LINK_OK;
1737     SMC_SELECT_BANK(1);
1738     media |= (inw(ioaddr + CONFIG) & CFG_AUI_SELECT) ? 2 : 1;
1739 
1740     SMC_SELECT_BANK(saved_bank);
1741     spin_unlock_irqrestore(&smc->lock, flags);
1742 
1743     /* Check for pending interrupt with watchdog flag set: with
1744        this, we can limp along even if the interrupt is blocked */
1745     if (smc->watchdog++ && ((i>>8) & i)) {
1746 	if (!smc->fast_poll)
1747 	    netdev_info(dev, "interrupt(s) dropped!\n");
1748 	local_irq_save(flags);
1749 	smc_interrupt(dev->irq, dev);
1750 	local_irq_restore(flags);
1751 	smc->fast_poll = HZ;
1752     }
1753     if (smc->fast_poll) {
1754 	smc->fast_poll--;
1755 	smc->media.expires = jiffies + HZ/100;
1756 	add_timer(&smc->media);
1757 	return;
1758     }
1759 
1760     spin_lock_irqsave(&smc->lock, flags);
1761 
1762     saved_bank = inw(ioaddr + BANK_SELECT);
1763 
1764     if (smc->cfg & CFG_MII_SELECT) {
1765 	if (smc->mii_if.phy_id < 0)
1766 	    goto reschedule;
1767 
1768 	SMC_SELECT_BANK(3);
1769 	link = mdio_read(dev, smc->mii_if.phy_id, 1);
1770 	if (!link || (link == 0xffff)) {
1771 	    netdev_info(dev, "MII is missing!\n");
1772 	    smc->mii_if.phy_id = -1;
1773 	    goto reschedule;
1774 	}
1775 
1776 	link &= 0x0004;
1777 	if (link != smc->link_status) {
1778 	    u_short p = mdio_read(dev, smc->mii_if.phy_id, 5);
1779 	    netdev_info(dev, "%s link beat\n", link ? "found" : "lost");
1780 	    smc->duplex = (((p & 0x0100) || ((p & 0x1c0) == 0x40))
1781 			   ? TCR_FDUPLX : 0);
1782 	    if (link) {
1783 		netdev_info(dev, "autonegotiation complete: "
1784 			    "%dbaseT-%cD selected\n",
1785 			    (p & 0x0180) ? 100 : 10, smc->duplex ? 'F' : 'H');
1786 	    }
1787 	    SMC_SELECT_BANK(0);
1788 	    outw(inw(ioaddr + TCR) | smc->duplex, ioaddr + TCR);
1789 	    smc->link_status = link;
1790 	}
1791 	goto reschedule;
1792     }
1793 
1794     /* Ignore collisions unless we've had no rx's recently */
1795     if (time_after(jiffies, smc->last_rx + HZ)) {
1796 	if (smc->tx_err || (smc->media_status & EPH_16COL))
1797 	    media |= EPH_16COL;
1798     }
1799     smc->tx_err = 0;
1800 
1801     if (media != smc->media_status) {
1802 	if ((media & smc->media_status & 1) &&
1803 	    ((smc->media_status ^ media) & EPH_LINK_OK))
1804 	    netdev_info(dev, "%s link beat\n",
1805 			smc->media_status & EPH_LINK_OK ? "lost" : "found");
1806 	else if ((media & smc->media_status & 2) &&
1807 		 ((smc->media_status ^ media) & EPH_16COL))
1808 	    netdev_info(dev, "coax cable %s\n",
1809 			media & EPH_16COL ? "problem" : "ok");
1810 	if (dev->if_port == 0) {
1811 	    if (media & 1) {
1812 		if (media & EPH_LINK_OK)
1813 		    netdev_info(dev, "flipped to 10baseT\n");
1814 		else
1815 		    smc_set_xcvr(dev, 2);
1816 	    } else {
1817 		if (media & EPH_16COL)
1818 		    smc_set_xcvr(dev, 1);
1819 		else
1820 		    netdev_info(dev, "flipped to 10base2\n");
1821 	    }
1822 	}
1823 	smc->media_status = media;
1824     }
1825 
1826 reschedule:
1827     smc->media.expires = jiffies + HZ;
1828     add_timer(&smc->media);
1829     SMC_SELECT_BANK(saved_bank);
1830     spin_unlock_irqrestore(&smc->lock, flags);
1831 }
1832 
1833 static int smc_link_ok(struct net_device *dev)
1834 {
1835     unsigned int ioaddr = dev->base_addr;
1836     struct smc_private *smc = netdev_priv(dev);
1837 
1838     if (smc->cfg & CFG_MII_SELECT) {
1839 	return mii_link_ok(&smc->mii_if);
1840     } else {
1841         SMC_SELECT_BANK(0);
1842 	return inw(ioaddr + EPH) & EPH_LINK_OK;
1843     }
1844 }
1845 
1846 static void smc_netdev_get_ecmd(struct net_device *dev,
1847 				struct ethtool_link_ksettings *ecmd)
1848 {
1849 	u16 tmp;
1850 	unsigned int ioaddr = dev->base_addr;
1851 	u32 supported;
1852 
1853 	supported = (SUPPORTED_TP | SUPPORTED_AUI |
1854 		     SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full);
1855 
1856 	SMC_SELECT_BANK(1);
1857 	tmp = inw(ioaddr + CONFIG);
1858 	ecmd->base.port = (tmp & CFG_AUI_SELECT) ? PORT_AUI : PORT_TP;
1859 	ecmd->base.speed = SPEED_10;
1860 	ecmd->base.phy_address = ioaddr + MGMT;
1861 
1862 	SMC_SELECT_BANK(0);
1863 	tmp = inw(ioaddr + TCR);
1864 	ecmd->base.duplex = (tmp & TCR_FDUPLX) ? DUPLEX_FULL : DUPLEX_HALF;
1865 
1866 	ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported,
1867 						supported);
1868 }
1869 
1870 static int smc_netdev_set_ecmd(struct net_device *dev,
1871 			       const struct ethtool_link_ksettings *ecmd)
1872 {
1873 	u16 tmp;
1874 	unsigned int ioaddr = dev->base_addr;
1875 
1876 	if (ecmd->base.speed != SPEED_10)
1877 		return -EINVAL;
1878 	if (ecmd->base.duplex != DUPLEX_HALF &&
1879 	    ecmd->base.duplex != DUPLEX_FULL)
1880 		return -EINVAL;
1881 	if (ecmd->base.port != PORT_TP && ecmd->base.port != PORT_AUI)
1882 		return -EINVAL;
1883 
1884 	if (ecmd->base.port == PORT_AUI)
1885 		smc_set_xcvr(dev, 1);
1886 	else
1887 		smc_set_xcvr(dev, 0);
1888 
1889 	SMC_SELECT_BANK(0);
1890 	tmp = inw(ioaddr + TCR);
1891 	if (ecmd->base.duplex == DUPLEX_FULL)
1892 		tmp |= TCR_FDUPLX;
1893 	else
1894 		tmp &= ~TCR_FDUPLX;
1895 	outw(tmp, ioaddr + TCR);
1896 
1897 	return 0;
1898 }
1899 
1900 static int check_if_running(struct net_device *dev)
1901 {
1902 	if (!netif_running(dev))
1903 		return -EINVAL;
1904 	return 0;
1905 }
1906 
1907 static void smc_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1908 {
1909 	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1910 	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1911 }
1912 
1913 static int smc_get_link_ksettings(struct net_device *dev,
1914 				  struct ethtool_link_ksettings *ecmd)
1915 {
1916 	struct smc_private *smc = netdev_priv(dev);
1917 	unsigned int ioaddr = dev->base_addr;
1918 	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1919 	unsigned long flags;
1920 
1921 	spin_lock_irqsave(&smc->lock, flags);
1922 	SMC_SELECT_BANK(3);
1923 	if (smc->cfg & CFG_MII_SELECT)
1924 		mii_ethtool_get_link_ksettings(&smc->mii_if, ecmd);
1925 	else
1926 		smc_netdev_get_ecmd(dev, ecmd);
1927 	SMC_SELECT_BANK(saved_bank);
1928 	spin_unlock_irqrestore(&smc->lock, flags);
1929 	return 0;
1930 }
1931 
1932 static int smc_set_link_ksettings(struct net_device *dev,
1933 				  const struct ethtool_link_ksettings *ecmd)
1934 {
1935 	struct smc_private *smc = netdev_priv(dev);
1936 	unsigned int ioaddr = dev->base_addr;
1937 	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1938 	int ret;
1939 	unsigned long flags;
1940 
1941 	spin_lock_irqsave(&smc->lock, flags);
1942 	SMC_SELECT_BANK(3);
1943 	if (smc->cfg & CFG_MII_SELECT)
1944 		ret = mii_ethtool_set_link_ksettings(&smc->mii_if, ecmd);
1945 	else
1946 		ret = smc_netdev_set_ecmd(dev, ecmd);
1947 	SMC_SELECT_BANK(saved_bank);
1948 	spin_unlock_irqrestore(&smc->lock, flags);
1949 	return ret;
1950 }
1951 
1952 static u32 smc_get_link(struct net_device *dev)
1953 {
1954 	struct smc_private *smc = netdev_priv(dev);
1955 	unsigned int ioaddr = dev->base_addr;
1956 	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1957 	u32 ret;
1958 	unsigned long flags;
1959 
1960 	spin_lock_irqsave(&smc->lock, flags);
1961 	SMC_SELECT_BANK(3);
1962 	ret = smc_link_ok(dev);
1963 	SMC_SELECT_BANK(saved_bank);
1964 	spin_unlock_irqrestore(&smc->lock, flags);
1965 	return ret;
1966 }
1967 
1968 static int smc_nway_reset(struct net_device *dev)
1969 {
1970 	struct smc_private *smc = netdev_priv(dev);
1971 	if (smc->cfg & CFG_MII_SELECT) {
1972 		unsigned int ioaddr = dev->base_addr;
1973 		u16 saved_bank = inw(ioaddr + BANK_SELECT);
1974 		int res;
1975 
1976 		SMC_SELECT_BANK(3);
1977 		res = mii_nway_restart(&smc->mii_if);
1978 		SMC_SELECT_BANK(saved_bank);
1979 
1980 		return res;
1981 	} else
1982 		return -EOPNOTSUPP;
1983 }
1984 
1985 static const struct ethtool_ops ethtool_ops = {
1986 	.begin = check_if_running,
1987 	.get_drvinfo = smc_get_drvinfo,
1988 	.get_link = smc_get_link,
1989 	.nway_reset = smc_nway_reset,
1990 	.get_link_ksettings = smc_get_link_ksettings,
1991 	.set_link_ksettings = smc_set_link_ksettings,
1992 };
1993 
1994 static int smc_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1995 {
1996 	struct smc_private *smc = netdev_priv(dev);
1997 	struct mii_ioctl_data *mii = if_mii(rq);
1998 	int rc = 0;
1999 	u16 saved_bank;
2000 	unsigned int ioaddr = dev->base_addr;
2001 	unsigned long flags;
2002 
2003 	if (!netif_running(dev))
2004 		return -EINVAL;
2005 
2006 	spin_lock_irqsave(&smc->lock, flags);
2007 	saved_bank = inw(ioaddr + BANK_SELECT);
2008 	SMC_SELECT_BANK(3);
2009 	rc = generic_mii_ioctl(&smc->mii_if, mii, cmd, NULL);
2010 	SMC_SELECT_BANK(saved_bank);
2011 	spin_unlock_irqrestore(&smc->lock, flags);
2012 	return rc;
2013 }
2014 
2015 static const struct pcmcia_device_id smc91c92_ids[] = {
2016 	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0109, 0x0501),
2017 	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0140, 0x000a),
2018 	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3288", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x04cd2988, 0x46a52d63),
2019 	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3336", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x0143b773, 0x46a52d63),
2020 	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "EM1144T", "PCMCIA MODEM", 0xf510db04, 0x856d66c8, 0xbd6c43ef),
2021 	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "XJEM1144/CCEM1144", "PCMCIA MODEM", 0xf510db04, 0x52d21e1e, 0xbd6c43ef),
2022 	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Gateway 2000", "XJEM3336", 0xdd9989be, 0x662c394c),
2023 	PCMCIA_PFC_DEVICE_PROD_ID12(0, "MEGAHERTZ", "XJEM1144/CCEM1144", 0xf510db04, 0x52d21e1e),
2024 	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Diamonds Modem+Ethernet", 0xc2f80cd, 0x656947b9),
2025 	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Hearts Modem+Ethernet", 0xc2f80cd, 0xdc9ba5ed),
2026 	PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x016c, 0x0020),
2027 	PCMCIA_DEVICE_MANF_CARD(0x016c, 0x0023),
2028 	PCMCIA_DEVICE_PROD_ID123("BASICS by New Media Corporation", "Ethernet", "SMC91C94", 0x23c78a9d, 0x00b2e941, 0xcef397fb),
2029 	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "Fast Ethernet PCCard", 0x78f308dc, 0xdcea68bc),
2030 	PCMCIA_DEVICE_PROD_ID12("dit Co., Ltd.", "PC Card-10/100BTX", 0xe59365c8, 0x6a2161d1),
2031 	PCMCIA_DEVICE_PROD_ID12("DYNALINK", "L100C", 0x6a26d1cf, 0xc16ce9c5),
2032 	PCMCIA_DEVICE_PROD_ID12("Farallon", "Farallon Enet", 0x58d93fc4, 0x244734e9),
2033 	PCMCIA_DEVICE_PROD_ID12("Megahertz", "CC10BT/2", 0x33234748, 0x3c95b953),
2034 	PCMCIA_DEVICE_PROD_ID12("MELCO/SMC", "LPC-TX", 0xa2cd8e6d, 0x42da662a),
2035 	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Four of Diamonds Ethernet", 0xc2f80cd, 0xb3466314),
2036 	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Seven of Diamonds Ethernet", 0xc2f80cd, 0x194b650a),
2037 	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "Fast Ethernet PCCard", 0x281f1c5d, 0xdcea68bc),
2038 	PCMCIA_DEVICE_PROD_ID12("Psion", "10Mb Ethernet", 0x4ef00b21, 0x844be9e9),
2039 	PCMCIA_DEVICE_PROD_ID12("SMC", "EtherEZ Ethernet 8020", 0xc4f8b18b, 0x4a0eeb2d),
2040 	/* These conflict with other cards! */
2041 	/* PCMCIA_DEVICE_MANF_CARD(0x0186, 0x0100), */
2042 	/* PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), */
2043 	PCMCIA_DEVICE_NULL,
2044 };
2045 MODULE_DEVICE_TABLE(pcmcia, smc91c92_ids);
2046 
2047 static struct pcmcia_driver smc91c92_cs_driver = {
2048 	.owner		= THIS_MODULE,
2049 	.name		= "smc91c92_cs",
2050 	.probe		= smc91c92_probe,
2051 	.remove		= smc91c92_detach,
2052 	.id_table       = smc91c92_ids,
2053 	.suspend	= smc91c92_suspend,
2054 	.resume		= smc91c92_resume,
2055 };
2056 module_pcmcia_driver(smc91c92_cs_driver);
2057