drivers/net/ethernet/smsc/smc91c92

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This source file includes following definitions.
smc91c92_probe
smc91c92_detach
cvt_ascii_address
mhz_3288_power
mhz_mfc_config_check
mhz_mfc_config
pcmcia_get_versmac
mhz_setup
mot_config
mot_setup
smc_configcheck
smc_config
smc_setup
osi_config
osi_load_firmware
pcmcia_osi_mac
osi_setup
smc91c92_suspend
smc91c92_resume
check_sig
smc91c92_config
smc91c92_release
mdio_sync
mdio_read
mdio_write
smc_dump
smc_open
smc_close
smc_hardware_send_packet
smc_tx_timeout
smc_start_xmit
smc_tx_err
smc_eph_irq
smc_interrupt
smc_rx
set_rx_mode
s9k_config
smc_set_xcvr
smc_reset
media_check
smc_link_ok
smc_netdev_get_ecmd
smc_netdev_set_ecmd
check_if_running
smc_get_drvinfo
smc_get_link_ksettings
smc_set_link_ksettings
smc_get_link
smc_nway_reset
smc_ioctl
   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);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ethernet/smsc/smc91c92_cs.c

DEFINITIONS
