Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/net/ethernet/smsc/smc91c92_cs.c

  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 <asm/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 };
117 
118 /* Special definitions for Megahertz multifunction cards */
119 #define MEGAHERTZ_ISR           0x0380
120 
121 /* Special function registers for Motorola Mariner */
122 #define MOT_LAN                 0x0000
123 #define MOT_UART                0x0020
124 #define MOT_EEPROM              0x20
125 
126 #define MOT_NORMAL \
127 (COR_LEVEL_REQ | COR_FUNC_ENA | COR_ADDR_DECODE | COR_IREQ_ENA)
128 
129 /* Special function registers for Ositech cards */
130 #define OSITECH_AUI_CTL         0x0c
131 #define OSITECH_PWRDOWN         0x0d
132 #define OSITECH_RESET           0x0e
133 #define OSITECH_ISR             0x0f
134 #define OSITECH_AUI_PWR         0x0c
135 #define OSITECH_RESET_ISR       0x0e
136 
137 #define OSI_AUI_PWR             0x40
138 #define OSI_LAN_PWRDOWN         0x02
139 #define OSI_MODEM_PWRDOWN       0x01
140 #define OSI_LAN_RESET           0x02
141 #define OSI_MODEM_RESET         0x01
142 
143 /* Symbolic constants for the SMC91c9* series chips, from Erik Stahlman. */
144 #define BANK_SELECT             14              /* Window select register. */
145 #define SMC_SELECT_BANK(x)  { outw(x, ioaddr + BANK_SELECT); }
146 
147 /* Bank 0 registers. */
148 #define TCR             0       /* transmit control register */
149 #define  TCR_CLEAR      0       /* do NOTHING */
150 #define  TCR_ENABLE     0x0001  /* if this is 1, we can transmit */
151 #define  TCR_PAD_EN     0x0080  /* pads short packets to 64 bytes */
152 #define  TCR_MONCSN     0x0400  /* Monitor Carrier. */
153 #define  TCR_FDUPLX     0x0800  /* Full duplex mode. */
154 #define  TCR_NORMAL TCR_ENABLE | TCR_PAD_EN
155 
156 #define EPH             2       /* Ethernet Protocol Handler report. */
157 #define  EPH_TX_SUC     0x0001
158 #define  EPH_SNGLCOL    0x0002
159 #define  EPH_MULCOL     0x0004
160 #define  EPH_LTX_MULT   0x0008
161 #define  EPH_16COL      0x0010
162 #define  EPH_SQET       0x0020
163 #define  EPH_LTX_BRD    0x0040
164 #define  EPH_TX_DEFR    0x0080
165 #define  EPH_LAT_COL    0x0200
166 #define  EPH_LOST_CAR   0x0400
167 #define  EPH_EXC_DEF    0x0800
168 #define  EPH_CTR_ROL    0x1000
169 #define  EPH_RX_OVRN    0x2000
170 #define  EPH_LINK_OK    0x4000
171 #define  EPH_TX_UNRN    0x8000
172 #define MEMINFO         8       /* Memory Information Register */
173 #define MEMCFG          10      /* Memory Configuration Register */
174 
175 /* Bank 1 registers. */
176 #define CONFIG                  0
177 #define  CFG_MII_SELECT         0x8000  /* 91C100 only */
178 #define  CFG_NO_WAIT            0x1000
179 #define  CFG_FULL_STEP          0x0400
180 #define  CFG_SET_SQLCH          0x0200
181 #define  CFG_AUI_SELECT         0x0100
182 #define  CFG_16BIT              0x0080
183 #define  CFG_DIS_LINK           0x0040
184 #define  CFG_STATIC             0x0030
185 #define  CFG_IRQ_SEL_1          0x0004
186 #define  CFG_IRQ_SEL_0          0x0002
187 #define BASE_ADDR               2
188 #define ADDR0                   4
189 #define GENERAL                 10
190 #define CONTROL                 12
191 #define  CTL_STORE              0x0001
192 #define  CTL_RELOAD             0x0002
193 #define  CTL_EE_SELECT          0x0004
194 #define  CTL_TE_ENABLE          0x0020
195 #define  CTL_CR_ENABLE          0x0040
196 #define  CTL_LE_ENABLE          0x0080
197 #define  CTL_AUTO_RELEASE       0x0800
198 #define  CTL_POWERDOWN          0x2000
199 
200 /* Bank 2 registers. */
201 #define MMU_CMD         0
202 #define  MC_ALLOC       0x20    /* or with number of 256 byte packets */
203 #define  MC_RESET       0x40
204 #define  MC_RELEASE     0x80    /* remove and release the current rx packet */
205 #define  MC_FREEPKT     0xA0    /* Release packet in PNR register */
206 #define  MC_ENQUEUE     0xC0    /* Enqueue the packet for transmit */
207 #define PNR_ARR         2
208 #define FIFO_PORTS      4
209 #define  FP_RXEMPTY     0x8000
210 #define POINTER         6
211 #define  PTR_AUTO_INC   0x0040
212 #define  PTR_READ       0x2000
213 #define  PTR_AUTOINC    0x4000
214 #define  PTR_RCV        0x8000
215 #define DATA_1          8
216 #define INTERRUPT       12
217 #define  IM_RCV_INT             0x1
218 #define  IM_TX_INT              0x2
219 #define  IM_TX_EMPTY_INT        0x4
220 #define  IM_ALLOC_INT           0x8
221 #define  IM_RX_OVRN_INT         0x10
222 #define  IM_EPH_INT             0x20
223 
224 #define RCR             4
225 enum RxCfg { RxAllMulti = 0x0004, RxPromisc = 0x0002,
226              RxEnable = 0x0100, RxStripCRC = 0x0200};
227 #define  RCR_SOFTRESET  0x8000  /* resets the chip */
228 #define  RCR_STRIP_CRC  0x200   /* strips CRC */
229 #define  RCR_ENABLE     0x100   /* IFF this is set, we can receive packets */
230 #define  RCR_ALMUL      0x4     /* receive all multicast packets */
231 #define  RCR_PROMISC    0x2     /* enable promiscuous mode */
232 
233 /* the normal settings for the RCR register : */
234 #define  RCR_NORMAL     (RCR_STRIP_CRC | RCR_ENABLE)
235 #define  RCR_CLEAR      0x0             /* set it to a base state */
236 #define COUNTER         6
237 
238 /* BANK 3 -- not the same values as in smc9194! */
239 #define MULTICAST0      0
240 #define MULTICAST2      2
241 #define MULTICAST4      4
242 #define MULTICAST6      6
243 #define MGMT            8
244 #define REVISION        0x0a
245 
246 /* Transmit status bits. */
247 #define TS_SUCCESS 0x0001
248 #define TS_16COL   0x0010
249 #define TS_LATCOL  0x0200
250 #define TS_LOSTCAR 0x0400
251 
252 /* Receive status bits. */
253 #define RS_ALGNERR      0x8000
254 #define RS_BADCRC       0x2000
255 #define RS_ODDFRAME     0x1000
256 #define RS_TOOLONG      0x0800
257 #define RS_TOOSHORT     0x0400
258 #define RS_MULTICAST    0x0001
259 #define RS_ERRORS       (RS_ALGNERR | RS_BADCRC | RS_TOOLONG | RS_TOOSHORT)
260 
261 #define set_bits(v, p) outw(inw(p)|(v), (p))
262 #define mask_bits(v, p) outw(inw(p)&(v), (p))
263 
264 /*====================================================================*/
265 
266 static void smc91c92_detach(struct pcmcia_device *p_dev);
267 static int smc91c92_config(struct pcmcia_device *link);
268 static void smc91c92_release(struct pcmcia_device *link);
269 
270 static int smc_open(struct net_device *dev);
271 static int smc_close(struct net_device *dev);
272 static int smc_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
273 static void smc_tx_timeout(struct net_device *dev);
274 static netdev_tx_t smc_start_xmit(struct sk_buff *skb,
275                                         struct net_device *dev);
276 static irqreturn_t smc_interrupt(int irq, void *dev_id);
277 static void smc_rx(struct net_device *dev);
278 static void set_rx_mode(struct net_device *dev);
279 static int s9k_config(struct net_device *dev, struct ifmap *map);
280 static void smc_set_xcvr(struct net_device *dev, int if_port);
281 static void smc_reset(struct net_device *dev);
282 static void media_check(u_long arg);
283 static void mdio_sync(unsigned int addr);
284 static int mdio_read(struct net_device *dev, int phy_id, int loc);
285 static void mdio_write(struct net_device *dev, int phy_id, int loc, int value);
286 static int smc_link_ok(struct net_device *dev);
287 static const struct ethtool_ops ethtool_ops;
288 
289 static const struct net_device_ops smc_netdev_ops = {
290         .ndo_open               = smc_open,
291         .ndo_stop               = smc_close,
292         .ndo_start_xmit         = smc_start_xmit,
293         .ndo_tx_timeout         = smc_tx_timeout,
294         .ndo_set_config         = s9k_config,
295         .ndo_set_rx_mode        = set_rx_mode,
296         .ndo_do_ioctl           = smc_ioctl,
297         .ndo_change_mtu         = eth_change_mtu,
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 >= '') && (c <= '9')) ?
360                 (c - '') : ((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     init_timer(&smc->media);
1074     smc->media.function = media_check;
1075     smc->media.data = (u_long) dev;
1076     smc->media.expires = jiffies + HZ;
1077     add_timer(&smc->media);
1078 
1079     return 0;
1080 } /* smc_open */
1081 
1082 /*====================================================================*/
1083 
1084 static int smc_close(struct net_device *dev)
1085 {
1086     struct smc_private *smc = netdev_priv(dev);
1087     struct pcmcia_device *link = smc->p_dev;
1088     unsigned int ioaddr = dev->base_addr;
1089 
1090     dev_dbg(&link->dev, "%s: smc_close(), status %4.4x.\n",
1091           dev->name, inw(ioaddr + BANK_SELECT));
1092 
1093     netif_stop_queue(dev);
1094 
1095     /* Shut off all interrupts, and turn off the Tx and Rx sections.
1096        Don't bother to check for chip present. */
1097     SMC_SELECT_BANK(2); /* Nominally paranoia, but do no assume... */
1098     outw(0, ioaddr + INTERRUPT);
1099     SMC_SELECT_BANK(0);
1100     mask_bits(0xff00, ioaddr + RCR);
1101     mask_bits(0xff00, ioaddr + TCR);
1102 
1103     /* Put the chip into power-down mode. */
1104     SMC_SELECT_BANK(1);
1105     outw(CTL_POWERDOWN, ioaddr + CONTROL );
1106 
1107     link->open--;
1108     del_timer_sync(&smc->media);
1109 
1110     return 0;
1111 } /* smc_close */
1112 
1113 /*======================================================================
1114 
1115    Transfer a packet to the hardware and trigger the packet send.
1116    This may be called at either from either the Tx queue code
1117    or the interrupt handler.
1118 
1119 ======================================================================*/
1120 
1121 static void smc_hardware_send_packet(struct net_device * dev)
1122 {
1123     struct smc_private *smc = netdev_priv(dev);
1124     struct sk_buff *skb = smc->saved_skb;
1125     unsigned int ioaddr = dev->base_addr;
1126     u_char packet_no;
1127 
1128     if (!skb) {
1129         netdev_err(dev, "In XMIT with no packet to send\n");
1130         return;
1131     }
1132 
1133     /* There should be a packet slot waiting. */
1134     packet_no = inw(ioaddr + PNR_ARR) >> 8;
1135     if (packet_no & 0x80) {
1136         /* If not, there is a hardware problem!  Likely an ejected card. */
1137         netdev_warn(dev, "hardware Tx buffer allocation failed, status %#2.2x\n",
1138                     packet_no);
1139         dev_kfree_skb_irq(skb);
1140         smc->saved_skb = NULL;
1141         netif_start_queue(dev);
1142         return;
1143     }
1144 
1145     dev->stats.tx_bytes += skb->len;
1146     /* The card should use the just-allocated buffer. */
1147     outw(packet_no, ioaddr + PNR_ARR);
1148     /* point to the beginning of the packet */
1149     outw(PTR_AUTOINC , ioaddr + POINTER);
1150 
1151     /* Send the packet length (+6 for status, length and ctl byte)
1152        and the status word (set to zeros). */
1153     {
1154         u_char *buf = skb->data;
1155         u_int length = skb->len; /* The chip will pad to ethernet min. */
1156 
1157         netdev_dbg(dev, "Trying to xmit packet of length %d\n", length);
1158         
1159         /* send the packet length: +6 for status word, length, and ctl */
1160         outw(0, ioaddr + DATA_1);
1161         outw(length + 6, ioaddr + DATA_1);
1162         outsw(ioaddr + DATA_1, buf, length >> 1);
1163         
1164         /* The odd last byte, if there is one, goes in the control word. */
1165         outw((length & 1) ? 0x2000 | buf[length-1] : 0, ioaddr + DATA_1);
1166     }
1167 
1168     /* Enable the Tx interrupts, both Tx (TxErr) and TxEmpty. */
1169     outw(((IM_TX_INT|IM_TX_EMPTY_INT)<<8) |
1170          (inw(ioaddr + INTERRUPT) & 0xff00),
1171          ioaddr + INTERRUPT);
1172 
1173     /* The chip does the rest of the work. */
1174     outw(MC_ENQUEUE , ioaddr + MMU_CMD);
1175 
1176     smc->saved_skb = NULL;
1177     dev_kfree_skb_irq(skb);
1178     dev->trans_start = jiffies;
1179     netif_start_queue(dev);
1180 }
1181 
1182 /*====================================================================*/
1183 
1184 static void smc_tx_timeout(struct net_device *dev)
1185 {
1186     struct smc_private *smc = netdev_priv(dev);
1187     unsigned int ioaddr = dev->base_addr;
1188 
1189     netdev_notice(dev, "transmit timed out, Tx_status %2.2x status %4.4x.\n",
1190                   inw(ioaddr)&0xff, inw(ioaddr + 2));
1191     dev->stats.tx_errors++;
1192     smc_reset(dev);
1193     dev->trans_start = jiffies; /* prevent tx timeout */
1194     smc->saved_skb = NULL;
1195     netif_wake_queue(dev);
1196 }
1197 
1198 static netdev_tx_t smc_start_xmit(struct sk_buff *skb,
1199                                         struct net_device *dev)
1200 {
1201     struct smc_private *smc = netdev_priv(dev);
1202     unsigned int ioaddr = dev->base_addr;
1203     u_short num_pages;
1204     short time_out, ir;
1205     unsigned long flags;
1206 
1207     netif_stop_queue(dev);
1208 
1209     netdev_dbg(dev, "smc_start_xmit(length = %d) called, status %04x\n",
1210                skb->len, inw(ioaddr + 2));
1211 
1212     if (smc->saved_skb) {
1213         /* THIS SHOULD NEVER HAPPEN. */
1214         dev->stats.tx_aborted_errors++;
1215         netdev_dbg(dev, "Internal error -- sent packet while busy\n");
1216         return NETDEV_TX_BUSY;
1217     }
1218     smc->saved_skb = skb;
1219 
1220     num_pages = skb->len >> 8;
1221 
1222     if (num_pages > 7) {
1223         netdev_err(dev, "Far too big packet error: %d pages\n", num_pages);
1224         dev_kfree_skb (skb);
1225         smc->saved_skb = NULL;
1226         dev->stats.tx_dropped++;
1227         return NETDEV_TX_OK;            /* Do not re-queue this packet. */
1228     }
1229     /* A packet is now waiting. */
1230     smc->packets_waiting++;
1231 
1232     spin_lock_irqsave(&smc->lock, flags);
1233     SMC_SELECT_BANK(2); /* Paranoia, we should always be in window 2 */
1234 
1235     /* need MC_RESET to keep the memory consistent. errata? */
1236     if (smc->rx_ovrn) {
1237         outw(MC_RESET, ioaddr + MMU_CMD);
1238         smc->rx_ovrn = 0;
1239     }
1240 
1241     /* Allocate the memory; send the packet now if we win. */
1242     outw(MC_ALLOC | num_pages, ioaddr + MMU_CMD);
1243     for (time_out = MEMORY_WAIT_TIME; time_out >= 0; time_out--) {
1244         ir = inw(ioaddr+INTERRUPT);
1245         if (ir & IM_ALLOC_INT) {
1246             /* Acknowledge the interrupt, send the packet. */
1247             outw((ir&0xff00) | IM_ALLOC_INT, ioaddr + INTERRUPT);
1248             smc_hardware_send_packet(dev);      /* Send the packet now.. */
1249             spin_unlock_irqrestore(&smc->lock, flags);
1250             return NETDEV_TX_OK;
1251         }
1252     }
1253 
1254     /* Otherwise defer until the Tx-space-allocated interrupt. */
1255     netdev_dbg(dev, "memory allocation deferred.\n");
1256     outw((IM_ALLOC_INT << 8) | (ir & 0xff00), ioaddr + INTERRUPT);
1257     spin_unlock_irqrestore(&smc->lock, flags);
1258 
1259     return NETDEV_TX_OK;
1260 }
1261 
1262 /*======================================================================
1263 
1264     Handle a Tx anomalous event.  Entered while in Window 2.
1265 
1266 ======================================================================*/
1267 
1268 static void smc_tx_err(struct net_device * dev)
1269 {
1270     struct smc_private *smc = netdev_priv(dev);
1271     unsigned int ioaddr = dev->base_addr;
1272     int saved_packet = inw(ioaddr + PNR_ARR) & 0xff;
1273     int packet_no = inw(ioaddr + FIFO_PORTS) & 0x7f;
1274     int tx_status;
1275 
1276     /* select this as the packet to read from */
1277     outw(packet_no, ioaddr + PNR_ARR);
1278 
1279     /* read the first word from this packet */
1280     outw(PTR_AUTOINC | PTR_READ | 0, ioaddr + POINTER);
1281 
1282     tx_status = inw(ioaddr + DATA_1);
1283 
1284     dev->stats.tx_errors++;
1285     if (tx_status & TS_LOSTCAR) dev->stats.tx_carrier_errors++;
1286     if (tx_status & TS_LATCOL)  dev->stats.tx_window_errors++;
1287     if (tx_status & TS_16COL) {
1288         dev->stats.tx_aborted_errors++;
1289         smc->tx_err++;
1290     }
1291 
1292     if (tx_status & TS_SUCCESS) {
1293         netdev_notice(dev, "Successful packet caused error interrupt?\n");
1294     }
1295     /* re-enable transmit */
1296     SMC_SELECT_BANK(0);
1297     outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1298     SMC_SELECT_BANK(2);
1299 
1300     outw(MC_FREEPKT, ioaddr + MMU_CMD);         /* Free the packet memory. */
1301 
1302     /* one less packet waiting for me */
1303     smc->packets_waiting--;
1304 
1305     outw(saved_packet, ioaddr + PNR_ARR);
1306 }
1307 
1308 /*====================================================================*/
1309 
1310 static void smc_eph_irq(struct net_device *dev)
1311 {
1312     struct smc_private *smc = netdev_priv(dev);
1313     unsigned int ioaddr = dev->base_addr;
1314     u_short card_stats, ephs;
1315 
1316     SMC_SELECT_BANK(0);
1317     ephs = inw(ioaddr + EPH);
1318     netdev_dbg(dev, "Ethernet protocol handler interrupt, status %4.4x.\n",
1319                ephs);
1320     /* Could be a counter roll-over warning: update stats. */
1321     card_stats = inw(ioaddr + COUNTER);
1322     /* single collisions */
1323     dev->stats.collisions += card_stats & 0xF;
1324     card_stats >>= 4;
1325     /* multiple collisions */
1326     dev->stats.collisions += card_stats & 0xF;
1327 #if 0           /* These are for when linux supports these statistics */
1328     card_stats >>= 4;                   /* deferred */
1329     card_stats >>= 4;                   /* excess deferred */
1330 #endif
1331     /* If we had a transmit error we must re-enable the transmitter. */
1332     outw(inw(ioaddr + TCR) | TCR_ENABLE | smc->duplex, ioaddr + TCR);
1333 
1334     /* Clear a link error interrupt. */
1335     SMC_SELECT_BANK(1);
1336     outw(CTL_AUTO_RELEASE | 0x0000, ioaddr + CONTROL);
1337     outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1338          ioaddr + CONTROL);
1339     SMC_SELECT_BANK(2);
1340 }
1341 
1342 /*====================================================================*/
1343 
1344 static irqreturn_t smc_interrupt(int irq, void *dev_id)
1345 {
1346     struct net_device *dev = dev_id;
1347     struct smc_private *smc = netdev_priv(dev);
1348     unsigned int ioaddr;
1349     u_short saved_bank, saved_pointer, mask, status;
1350     unsigned int handled = 1;
1351     char bogus_cnt = INTR_WORK;         /* Work we are willing to do. */
1352 
1353     if (!netif_device_present(dev))
1354         return IRQ_NONE;
1355 
1356     ioaddr = dev->base_addr;
1357 
1358     netdev_dbg(dev, "SMC91c92 interrupt %d at %#x.\n",
1359                irq, ioaddr);
1360 
1361     spin_lock(&smc->lock);
1362     smc->watchdog = 0;
1363     saved_bank = inw(ioaddr + BANK_SELECT);
1364     if ((saved_bank & 0xff00) != 0x3300) {
1365         /* The device does not exist -- the card could be off-line, or
1366            maybe it has been ejected. */
1367         netdev_dbg(dev, "SMC91c92 interrupt %d for non-existent/ejected device.\n",
1368                    irq);
1369         handled = 0;
1370         goto irq_done;
1371     }
1372 
1373     SMC_SELECT_BANK(2);
1374     saved_pointer = inw(ioaddr + POINTER);
1375     mask = inw(ioaddr + INTERRUPT) >> 8;
1376     /* clear all interrupts */
1377     outw(0, ioaddr + INTERRUPT);
1378 
1379     do { /* read the status flag, and mask it */
1380         status = inw(ioaddr + INTERRUPT) & 0xff;
1381         netdev_dbg(dev, "Status is %#2.2x (mask %#2.2x).\n",
1382                    status, mask);
1383         if ((status & mask) == 0) {
1384             if (bogus_cnt == INTR_WORK)
1385                 handled = 0;
1386             break;
1387         }
1388         if (status & IM_RCV_INT) {
1389             /* Got a packet(s). */
1390             smc_rx(dev);
1391         }
1392         if (status & IM_TX_INT) {
1393             smc_tx_err(dev);
1394             outw(IM_TX_INT, ioaddr + INTERRUPT);
1395         }
1396         status &= mask;
1397         if (status & IM_TX_EMPTY_INT) {
1398             outw(IM_TX_EMPTY_INT, ioaddr + INTERRUPT);
1399             mask &= ~IM_TX_EMPTY_INT;
1400             dev->stats.tx_packets += smc->packets_waiting;
1401             smc->packets_waiting = 0;
1402         }
1403         if (status & IM_ALLOC_INT) {
1404             /* Clear this interrupt so it doesn't happen again */
1405             mask &= ~IM_ALLOC_INT;
1406         
1407             smc_hardware_send_packet(dev);
1408         
1409             /* enable xmit interrupts based on this */
1410             mask |= (IM_TX_EMPTY_INT | IM_TX_INT);
1411         
1412             /* and let the card send more packets to me */
1413             netif_wake_queue(dev);
1414         }
1415         if (status & IM_RX_OVRN_INT) {
1416             dev->stats.rx_errors++;
1417             dev->stats.rx_fifo_errors++;
1418             if (smc->duplex)
1419                 smc->rx_ovrn = 1; /* need MC_RESET outside smc_interrupt */
1420             outw(IM_RX_OVRN_INT, ioaddr + INTERRUPT);
1421         }
1422         if (status & IM_EPH_INT)
1423             smc_eph_irq(dev);
1424     } while (--bogus_cnt);
1425 
1426     netdev_dbg(dev, "  Restoring saved registers mask %2.2x bank %4.4x pointer %4.4x.\n",
1427                mask, saved_bank, saved_pointer);
1428 
1429     /* restore state register */
1430     outw((mask<<8), ioaddr + INTERRUPT);
1431     outw(saved_pointer, ioaddr + POINTER);
1432     SMC_SELECT_BANK(saved_bank);
1433 
1434     netdev_dbg(dev, "Exiting interrupt IRQ%d.\n", irq);
1435 
1436 irq_done:
1437 
1438     if ((smc->manfid == MANFID_OSITECH) &&
1439         (smc->cardid != PRODID_OSITECH_SEVEN)) {
1440         /* Retrigger interrupt if needed */
1441         mask_bits(0x00ff, ioaddr-0x10+OSITECH_RESET_ISR);
1442         set_bits(0x0300, ioaddr-0x10+OSITECH_RESET_ISR);
1443     }
1444     if (smc->manfid == MANFID_MOTOROLA) {
1445         u_char cor;
1446         cor = readb(smc->base + MOT_UART + CISREG_COR);
1447         writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_UART + CISREG_COR);
1448         writeb(cor, smc->base + MOT_UART + CISREG_COR);
1449         cor = readb(smc->base + MOT_LAN + CISREG_COR);
1450         writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_LAN + CISREG_COR);
1451         writeb(cor, smc->base + MOT_LAN + CISREG_COR);
1452     }
1453 
1454     if ((smc->base != NULL) &&  /* Megahertz MFC's */
1455         (smc->manfid == MANFID_MEGAHERTZ) &&
1456         (smc->cardid == PRODID_MEGAHERTZ_EM3288)) {
1457 
1458         u_char tmp;
1459         tmp = readb(smc->base+MEGAHERTZ_ISR);
1460         tmp = readb(smc->base+MEGAHERTZ_ISR);
1461 
1462         /* Retrigger interrupt if needed */
1463         writeb(tmp, smc->base + MEGAHERTZ_ISR);
1464         writeb(tmp, smc->base + MEGAHERTZ_ISR);
1465     }
1466 
1467     spin_unlock(&smc->lock);
1468     return IRQ_RETVAL(handled);
1469 }
1470 
1471 /*====================================================================*/
1472 
1473 static void smc_rx(struct net_device *dev)
1474 {
1475     unsigned int ioaddr = dev->base_addr;
1476     int rx_status;
1477     int packet_length;  /* Caution: not frame length, rather words
1478                            to transfer from the chip. */
1479 
1480     /* Assertion: we are in Window 2. */
1481 
1482     if (inw(ioaddr + FIFO_PORTS) & FP_RXEMPTY) {
1483         netdev_err(dev, "smc_rx() with nothing on Rx FIFO\n");
1484         return;
1485     }
1486 
1487     /*  Reset the read pointer, and read the status and packet length. */
1488     outw(PTR_READ | PTR_RCV | PTR_AUTOINC, ioaddr + POINTER);
1489     rx_status = inw(ioaddr + DATA_1);
1490     packet_length = inw(ioaddr + DATA_1) & 0x07ff;
1491 
1492     netdev_dbg(dev, "Receive status %4.4x length %d.\n",
1493                rx_status, packet_length);
1494 
1495     if (!(rx_status & RS_ERRORS)) {
1496         /* do stuff to make a new packet */
1497         struct sk_buff *skb;
1498         
1499         /* Note: packet_length adds 5 or 6 extra bytes here! */
1500         skb = netdev_alloc_skb(dev, packet_length+2);
1501         
1502         if (skb == NULL) {
1503             netdev_dbg(dev, "Low memory, packet dropped.\n");
1504             dev->stats.rx_dropped++;
1505             outw(MC_RELEASE, ioaddr + MMU_CMD);
1506             return;
1507         }
1508         
1509         packet_length -= (rx_status & RS_ODDFRAME ? 5 : 6);
1510         skb_reserve(skb, 2);
1511         insw(ioaddr+DATA_1, skb_put(skb, packet_length),
1512              (packet_length+1)>>1);
1513         skb->protocol = eth_type_trans(skb, dev);
1514         
1515         netif_rx(skb);
1516         dev->last_rx = jiffies;
1517         dev->stats.rx_packets++;
1518         dev->stats.rx_bytes += packet_length;
1519         if (rx_status & RS_MULTICAST)
1520             dev->stats.multicast++;
1521     } else {
1522         /* error ... */
1523         dev->stats.rx_errors++;
1524         
1525         if (rx_status & RS_ALGNERR)  dev->stats.rx_frame_errors++;
1526         if (rx_status & (RS_TOOSHORT | RS_TOOLONG))
1527             dev->stats.rx_length_errors++;
1528         if (rx_status & RS_BADCRC)      dev->stats.rx_crc_errors++;
1529     }
1530     /* Let the MMU free the memory of this packet. */
1531     outw(MC_RELEASE, ioaddr + MMU_CMD);
1532 }
1533 
1534 /*======================================================================
1535 
1536     Set the receive mode.
1537 
1538     This routine is used by both the protocol level to notify us of
1539     promiscuous/multicast mode changes, and by the open/reset code to
1540     initialize the Rx registers.  We always set the multicast list and
1541     leave the receiver running.
1542 
1543 ======================================================================*/
1544 
1545 static void set_rx_mode(struct net_device *dev)
1546 {
1547     unsigned int ioaddr = dev->base_addr;
1548     struct smc_private *smc = netdev_priv(dev);
1549     unsigned char multicast_table[8];
1550     unsigned long flags;
1551     u_short rx_cfg_setting;
1552     int i;
1553 
1554     memset(multicast_table, 0, sizeof(multicast_table));
1555 
1556     if (dev->flags & IFF_PROMISC) {
1557         rx_cfg_setting = RxStripCRC | RxEnable | RxPromisc | RxAllMulti;
1558     } else if (dev->flags & IFF_ALLMULTI)
1559         rx_cfg_setting = RxStripCRC | RxEnable | RxAllMulti;
1560     else {
1561         if (!netdev_mc_empty(dev)) {
1562             struct netdev_hw_addr *ha;
1563 
1564             netdev_for_each_mc_addr(ha, dev) {
1565                 u_int position = ether_crc(6, ha->addr);
1566                 multicast_table[position >> 29] |= 1 << ((position >> 26) & 7);
1567             }
1568         }
1569         rx_cfg_setting = RxStripCRC | RxEnable;
1570     }
1571 
1572     /* Load MC table and Rx setting into the chip without interrupts. */
1573     spin_lock_irqsave(&smc->lock, flags);
1574     SMC_SELECT_BANK(3);
1575     for (i = 0; i < 8; i++)
1576         outb(multicast_table[i], ioaddr + MULTICAST0 + i);
1577     SMC_SELECT_BANK(0);
1578     outw(rx_cfg_setting, ioaddr + RCR);
1579     SMC_SELECT_BANK(2);
1580     spin_unlock_irqrestore(&smc->lock, flags);
1581 }
1582 
1583 /*======================================================================
1584 
1585     Senses when a card's config changes. Here, it's coax or TP.
1586 
1587 ======================================================================*/
1588 
1589 static int s9k_config(struct net_device *dev, struct ifmap *map)
1590 {
1591     struct smc_private *smc = netdev_priv(dev);
1592     if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
1593         if (smc->cfg & CFG_MII_SELECT)
1594             return -EOPNOTSUPP;
1595         else if (map->port > 2)
1596             return -EINVAL;
1597         dev->if_port = map->port;
1598         netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]);
1599         smc_reset(dev);
1600     }
1601     return 0;
1602 }
1603 
1604 /*======================================================================
1605 
1606     Reset the chip, reloading every register that might be corrupted.
1607 
1608 ======================================================================*/
1609 
1610 /*
1611   Set transceiver type, perhaps to something other than what the user
1612   specified in dev->if_port.
1613 */
1614 static void smc_set_xcvr(struct net_device *dev, int if_port)
1615 {
1616     struct smc_private *smc = netdev_priv(dev);
1617     unsigned int ioaddr = dev->base_addr;
1618     u_short saved_bank;
1619 
1620     saved_bank = inw(ioaddr + BANK_SELECT);
1621     SMC_SELECT_BANK(1);
1622     if (if_port == 2) {
1623         outw(smc->cfg | CFG_AUI_SELECT, ioaddr + CONFIG);
1624         if ((smc->manfid == MANFID_OSITECH) &&
1625             (smc->cardid != PRODID_OSITECH_SEVEN))
1626             set_bits(OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1627         smc->media_status = ((dev->if_port == 0) ? 0x0001 : 0x0002);
1628     } else {
1629         outw(smc->cfg, ioaddr + CONFIG);
1630         if ((smc->manfid == MANFID_OSITECH) &&
1631             (smc->cardid != PRODID_OSITECH_SEVEN))
1632             mask_bits(~OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1633         smc->media_status = ((dev->if_port == 0) ? 0x0012 : 0x4001);
1634     }
1635     SMC_SELECT_BANK(saved_bank);
1636 }
1637 
1638 static void smc_reset(struct net_device *dev)
1639 {
1640     unsigned int ioaddr = dev->base_addr;
1641     struct smc_private *smc = netdev_priv(dev);
1642     int i;
1643 
1644     netdev_dbg(dev, "smc91c92 reset called.\n");
1645 
1646     /* The first interaction must be a write to bring the chip out
1647        of sleep mode. */
1648     SMC_SELECT_BANK(0);
1649     /* Reset the chip. */
1650     outw(RCR_SOFTRESET, ioaddr + RCR);
1651     udelay(10);
1652 
1653     /* Clear the transmit and receive configuration registers. */
1654     outw(RCR_CLEAR, ioaddr + RCR);
1655     outw(TCR_CLEAR, ioaddr + TCR);
1656 
1657     /* Set the Window 1 control, configuration and station addr registers.
1658        No point in writing the I/O base register ;-> */
1659     SMC_SELECT_BANK(1);
1660     /* Automatically release successfully transmitted packets,
1661        Accept link errors, counter and Tx error interrupts. */
1662     outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1663          ioaddr + CONTROL);
1664     smc_set_xcvr(dev, dev->if_port);
1665     if ((smc->manfid == MANFID_OSITECH) &&
1666         (smc->cardid != PRODID_OSITECH_SEVEN))
1667         outw((dev->if_port == 2 ? OSI_AUI_PWR : 0) |
1668              (inw(ioaddr-0x10+OSITECH_AUI_PWR) & 0xff00),
1669              ioaddr - 0x10 + OSITECH_AUI_PWR);
1670 
1671     /* Fill in the physical address.  The databook is wrong about the order! */
1672     for (i = 0; i < 6; i += 2)
1673         outw((dev->dev_addr[i+1]<<8)+dev->dev_addr[i],
1674              ioaddr + ADDR0 + i);
1675 
1676     /* Reset the MMU */
1677     SMC_SELECT_BANK(2);
1678     outw(MC_RESET, ioaddr + MMU_CMD);
1679     outw(0, ioaddr + INTERRUPT);
1680 
1681     /* Re-enable the chip. */
1682     SMC_SELECT_BANK(0);
1683     outw(((smc->cfg & CFG_MII_SELECT) ? 0 : TCR_MONCSN) |
1684          TCR_ENABLE | TCR_PAD_EN | smc->duplex, ioaddr + TCR);
1685     set_rx_mode(dev);
1686 
1687     if (smc->cfg & CFG_MII_SELECT) {
1688         SMC_SELECT_BANK(3);
1689 
1690         /* Reset MII */
1691         mdio_write(dev, smc->mii_if.phy_id, 0, 0x8000);
1692 
1693         /* Advertise 100F, 100H, 10F, 10H */
1694         mdio_write(dev, smc->mii_if.phy_id, 4, 0x01e1);
1695 
1696         /* Restart MII autonegotiation */
1697         mdio_write(dev, smc->mii_if.phy_id, 0, 0x0000);
1698         mdio_write(dev, smc->mii_if.phy_id, 0, 0x1200);
1699     }
1700 
1701     /* Enable interrupts. */
1702     SMC_SELECT_BANK(2);
1703     outw((IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) << 8,
1704          ioaddr + INTERRUPT);
1705 }
1706 
1707 /*======================================================================
1708 
1709     Media selection timer routine
1710 
1711 ======================================================================*/
1712 
1713 static void media_check(u_long arg)
1714 {
1715     struct net_device *dev = (struct net_device *) arg;
1716     struct smc_private *smc = netdev_priv(dev);
1717     unsigned int ioaddr = dev->base_addr;
1718     u_short i, media, saved_bank;
1719     u_short link;
1720     unsigned long flags;
1721 
1722     spin_lock_irqsave(&smc->lock, flags);
1723 
1724     saved_bank = inw(ioaddr + BANK_SELECT);
1725 
1726     if (!netif_device_present(dev))
1727         goto reschedule;
1728 
1729     SMC_SELECT_BANK(2);
1730 
1731     /* need MC_RESET to keep the memory consistent. errata? */
1732     if (smc->rx_ovrn) {
1733         outw(MC_RESET, ioaddr + MMU_CMD);
1734         smc->rx_ovrn = 0;
1735     }
1736     i = inw(ioaddr + INTERRUPT);
1737     SMC_SELECT_BANK(0);
1738     media = inw(ioaddr + EPH) & EPH_LINK_OK;
1739     SMC_SELECT_BANK(1);
1740     media |= (inw(ioaddr + CONFIG) & CFG_AUI_SELECT) ? 2 : 1;
1741 
1742     SMC_SELECT_BANK(saved_bank);
1743     spin_unlock_irqrestore(&smc->lock, flags);
1744 
1745     /* Check for pending interrupt with watchdog flag set: with
1746        this, we can limp along even if the interrupt is blocked */
1747     if (smc->watchdog++ && ((i>>8) & i)) {
1748         if (!smc->fast_poll)
1749             netdev_info(dev, "interrupt(s) dropped!\n");
1750         local_irq_save(flags);
1751         smc_interrupt(dev->irq, dev);
1752         local_irq_restore(flags);
1753         smc->fast_poll = HZ;
1754     }
1755     if (smc->fast_poll) {
1756         smc->fast_poll--;
1757         smc->media.expires = jiffies + HZ/100;
1758         add_timer(&smc->media);
1759         return;
1760     }
1761 
1762     spin_lock_irqsave(&smc->lock, flags);
1763 
1764     saved_bank = inw(ioaddr + BANK_SELECT);
1765 
1766     if (smc->cfg & CFG_MII_SELECT) {
1767         if (smc->mii_if.phy_id < 0)
1768             goto reschedule;
1769 
1770         SMC_SELECT_BANK(3);
1771         link = mdio_read(dev, smc->mii_if.phy_id, 1);
1772         if (!link || (link == 0xffff)) {
1773             netdev_info(dev, "MII is missing!\n");
1774             smc->mii_if.phy_id = -1;
1775             goto reschedule;
1776         }
1777 
1778         link &= 0x0004;
1779         if (link != smc->link_status) {
1780             u_short p = mdio_read(dev, smc->mii_if.phy_id, 5);
1781             netdev_info(dev, "%s link beat\n", link ? "found" : "lost");
1782             smc->duplex = (((p & 0x0100) || ((p & 0x1c0) == 0x40))
1783                            ? TCR_FDUPLX : 0);
1784             if (link) {
1785                 netdev_info(dev, "autonegotiation complete: "
1786                             "%dbaseT-%cD selected\n",
1787                             (p & 0x0180) ? 100 : 10, smc->duplex ? 'F' : 'H');
1788             }
1789             SMC_SELECT_BANK(0);
1790             outw(inw(ioaddr + TCR) | smc->duplex, ioaddr + TCR);
1791             smc->link_status = link;
1792         }
1793         goto reschedule;
1794     }
1795 
1796     /* Ignore collisions unless we've had no rx's recently */
1797     if (time_after(jiffies, dev->last_rx + HZ)) {
1798         if (smc->tx_err || (smc->media_status & EPH_16COL))
1799             media |= EPH_16COL;
1800     }
1801     smc->tx_err = 0;
1802 
1803     if (media != smc->media_status) {
1804         if ((media & smc->media_status & 1) &&
1805             ((smc->media_status ^ media) & EPH_LINK_OK))
1806             netdev_info(dev, "%s link beat\n",
1807                         smc->media_status & EPH_LINK_OK ? "lost" : "found");
1808         else if ((media & smc->media_status & 2) &&
1809                  ((smc->media_status ^ media) & EPH_16COL))
1810             netdev_info(dev, "coax cable %s\n",
1811                         media & EPH_16COL ? "problem" : "ok");
1812         if (dev->if_port == 0) {
1813             if (media & 1) {
1814                 if (media & EPH_LINK_OK)
1815                     netdev_info(dev, "flipped to 10baseT\n");
1816                 else
1817                     smc_set_xcvr(dev, 2);
1818             } else {
1819                 if (media & EPH_16COL)
1820                     smc_set_xcvr(dev, 1);
1821                 else
1822                     netdev_info(dev, "flipped to 10base2\n");
1823             }
1824         }
1825         smc->media_status = media;
1826     }
1827 
1828 reschedule:
1829     smc->media.expires = jiffies + HZ;
1830     add_timer(&smc->media);
1831     SMC_SELECT_BANK(saved_bank);
1832     spin_unlock_irqrestore(&smc->lock, flags);
1833 }
1834 
1835 static int smc_link_ok(struct net_device *dev)
1836 {
1837     unsigned int ioaddr = dev->base_addr;
1838     struct smc_private *smc = netdev_priv(dev);
1839 
1840     if (smc->cfg & CFG_MII_SELECT) {
1841         return mii_link_ok(&smc->mii_if);
1842     } else {
1843         SMC_SELECT_BANK(0);
1844         return inw(ioaddr + EPH) & EPH_LINK_OK;
1845     }
1846 }
1847 
1848 static int smc_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1849 {
1850     u16 tmp;
1851     unsigned int ioaddr = dev->base_addr;
1852 
1853     ecmd->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->port = (tmp & CFG_AUI_SELECT) ? PORT_AUI : PORT_TP;
1859     ecmd->transceiver = XCVR_INTERNAL;
1860     ethtool_cmd_speed_set(ecmd, SPEED_10);
1861     ecmd->phy_address = ioaddr + MGMT;
1862 
1863     SMC_SELECT_BANK(0);
1864     tmp = inw(ioaddr + TCR);
1865     ecmd->duplex = (tmp & TCR_FDUPLX) ? DUPLEX_FULL : DUPLEX_HALF;
1866 
1867     return 0;
1868 }
1869 
1870 static int smc_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1871 {
1872     u16 tmp;
1873     unsigned int ioaddr = dev->base_addr;
1874 
1875     if (ethtool_cmd_speed(ecmd) != SPEED_10)
1876         return -EINVAL;
1877     if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
1878         return -EINVAL;
1879     if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI)
1880         return -EINVAL;
1881     if (ecmd->transceiver != XCVR_INTERNAL)
1882         return -EINVAL;
1883 
1884     if (ecmd->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->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_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1914 {
1915         struct smc_private *smc = netdev_priv(dev);
1916         unsigned int ioaddr = dev->base_addr;
1917         u16 saved_bank = inw(ioaddr + BANK_SELECT);
1918         int ret;
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                 ret = mii_ethtool_gset(&smc->mii_if, ecmd);
1925         else
1926                 ret = smc_netdev_get_ecmd(dev, ecmd);
1927         SMC_SELECT_BANK(saved_bank);
1928         spin_unlock_irqrestore(&smc->lock, flags);
1929         return ret;
1930 }
1931 
1932 static int smc_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1933 {
1934         struct smc_private *smc = netdev_priv(dev);
1935         unsigned int ioaddr = dev->base_addr;
1936         u16 saved_bank = inw(ioaddr + BANK_SELECT);
1937         int ret;
1938         unsigned long flags;
1939 
1940         spin_lock_irqsave(&smc->lock, flags);
1941         SMC_SELECT_BANK(3);
1942         if (smc->cfg & CFG_MII_SELECT)
1943                 ret = mii_ethtool_sset(&smc->mii_if, ecmd);
1944         else
1945                 ret = smc_netdev_set_ecmd(dev, ecmd);
1946         SMC_SELECT_BANK(saved_bank);
1947         spin_unlock_irqrestore(&smc->lock, flags);
1948         return ret;
1949 }
1950 
1951 static u32 smc_get_link(struct net_device *dev)
1952 {
1953         struct smc_private *smc = netdev_priv(dev);
1954         unsigned int ioaddr = dev->base_addr;
1955         u16 saved_bank = inw(ioaddr + BANK_SELECT);
1956         u32 ret;
1957         unsigned long flags;
1958 
1959         spin_lock_irqsave(&smc->lock, flags);
1960         SMC_SELECT_BANK(3);
1961         ret = smc_link_ok(dev);
1962         SMC_SELECT_BANK(saved_bank);
1963         spin_unlock_irqrestore(&smc->lock, flags);
1964         return ret;
1965 }
1966 
1967 static int smc_nway_reset(struct net_device *dev)
1968 {
1969         struct smc_private *smc = netdev_priv(dev);
1970         if (smc->cfg & CFG_MII_SELECT) {
1971                 unsigned int ioaddr = dev->base_addr;
1972                 u16 saved_bank = inw(ioaddr + BANK_SELECT);
1973                 int res;
1974 
1975                 SMC_SELECT_BANK(3);
1976                 res = mii_nway_restart(&smc->mii_if);
1977                 SMC_SELECT_BANK(saved_bank);
1978 
1979                 return res;
1980         } else
1981                 return -EOPNOTSUPP;
1982 }
1983 
1984 static const struct ethtool_ops ethtool_ops = {
1985         .begin = check_if_running,
1986         .get_drvinfo = smc_get_drvinfo,
1987         .get_settings = smc_get_settings,
1988         .set_settings = smc_set_settings,
1989         .get_link = smc_get_link,
1990         .nway_reset = smc_nway_reset,
1991 };
1992 
1993 static int smc_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1994 {
1995         struct smc_private *smc = netdev_priv(dev);
1996         struct mii_ioctl_data *mii = if_mii(rq);
1997         int rc = 0;
1998         u16 saved_bank;
1999         unsigned int ioaddr = dev->base_addr;
2000         unsigned long flags;
2001 
2002         if (!netif_running(dev))
2003                 return -EINVAL;
2004 
2005         spin_lock_irqsave(&smc->lock, flags);
2006         saved_bank = inw(ioaddr + BANK_SELECT);
2007         SMC_SELECT_BANK(3);
2008         rc = generic_mii_ioctl(&smc->mii_if, mii, cmd, NULL);
2009         SMC_SELECT_BANK(saved_bank);
2010         spin_unlock_irqrestore(&smc->lock, flags);
2011         return rc;
2012 }
2013 
2014 static const struct pcmcia_device_id smc91c92_ids[] = {
2015         PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0109, 0x0501),
2016         PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0140, 0x000a),
2017         PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3288", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x04cd2988, 0x46a52d63),
2018         PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3336", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x0143b773, 0x46a52d63),
2019         PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "EM1144T", "PCMCIA MODEM", 0xf510db04, 0x856d66c8, 0xbd6c43ef),
2020         PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "XJEM1144/CCEM1144", "PCMCIA MODEM", 0xf510db04, 0x52d21e1e, 0xbd6c43ef),
2021         PCMCIA_PFC_DEVICE_PROD_ID12(0, "Gateway 2000", "XJEM3336", 0xdd9989be, 0x662c394c),
2022         PCMCIA_PFC_DEVICE_PROD_ID12(0, "MEGAHERTZ", "XJEM1144/CCEM1144", 0xf510db04, 0x52d21e1e),
2023         PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Diamonds Modem+Ethernet", 0xc2f80cd, 0x656947b9),
2024         PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Hearts Modem+Ethernet", 0xc2f80cd, 0xdc9ba5ed),
2025         PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x016c, 0x0020),
2026         PCMCIA_DEVICE_MANF_CARD(0x016c, 0x0023),
2027         PCMCIA_DEVICE_PROD_ID123("BASICS by New Media Corporation", "Ethernet", "SMC91C94", 0x23c78a9d, 0x00b2e941, 0xcef397fb),
2028         PCMCIA_DEVICE_PROD_ID12("ARGOSY", "Fast Ethernet PCCard", 0x78f308dc, 0xdcea68bc),
2029         PCMCIA_DEVICE_PROD_ID12("dit Co., Ltd.", "PC Card-10/100BTX", 0xe59365c8, 0x6a2161d1),
2030         PCMCIA_DEVICE_PROD_ID12("DYNALINK", "L100C", 0x6a26d1cf, 0xc16ce9c5),
2031         PCMCIA_DEVICE_PROD_ID12("Farallon", "Farallon Enet", 0x58d93fc4, 0x244734e9),
2032         PCMCIA_DEVICE_PROD_ID12("Megahertz", "CC10BT/2", 0x33234748, 0x3c95b953),
2033         PCMCIA_DEVICE_PROD_ID12("MELCO/SMC", "LPC-TX", 0xa2cd8e6d, 0x42da662a),
2034         PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Four of Diamonds Ethernet", 0xc2f80cd, 0xb3466314),
2035         PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Seven of Diamonds Ethernet", 0xc2f80cd, 0x194b650a),
2036         PCMCIA_DEVICE_PROD_ID12("PCMCIA", "Fast Ethernet PCCard", 0x281f1c5d, 0xdcea68bc),
2037         PCMCIA_DEVICE_PROD_ID12("Psion", "10Mb Ethernet", 0x4ef00b21, 0x844be9e9),
2038         PCMCIA_DEVICE_PROD_ID12("SMC", "EtherEZ Ethernet 8020", 0xc4f8b18b, 0x4a0eeb2d),
2039         /* These conflict with other cards! */
2040         /* PCMCIA_DEVICE_MANF_CARD(0x0186, 0x0100), */
2041         /* PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), */
2042         PCMCIA_DEVICE_NULL,
2043 };
2044 MODULE_DEVICE_TABLE(pcmcia, smc91c92_ids);
2045 
2046 static struct pcmcia_driver smc91c92_cs_driver = {
2047         .owner          = THIS_MODULE,
2048         .name           = "smc91c92_cs",
2049         .probe          = smc91c92_probe,
2050         .remove         = smc91c92_detach,
2051         .id_table       = smc91c92_ids,
2052         .suspend        = smc91c92_suspend,
2053         .resume         = smc91c92_resume,
2054 };
2055 module_pcmcia_driver(smc91c92_cs_driver);
2056 

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