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
  59static const char *if_names[] = { "auto", "10baseT", "10base2"};
  60
  61/* Firmware name */
  62#define FIRMWARE_NAME		"ositech/Xilinx7OD.bin"
  63
  64/* Module parameters */
  65
  66MODULE_DESCRIPTION("SMC 91c92 series PCMCIA ethernet driver");
  67MODULE_LICENSE("GPL");
  68MODULE_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*/
  78INT_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
  98struct 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
 226enum 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
 267static void smc91c92_detach(struct pcmcia_device *p_dev);
 268static int smc91c92_config(struct pcmcia_device *link);
 269static void smc91c92_release(struct pcmcia_device *link);
 270
 271static int smc_open(struct net_device *dev);
 272static int smc_close(struct net_device *dev);
 273static int smc_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 274static void smc_tx_timeout(struct net_device *dev, unsigned int txqueue);
 275static netdev_tx_t smc_start_xmit(struct sk_buff *skb,
 276					struct net_device *dev);
 277static irqreturn_t smc_interrupt(int irq, void *dev_id);
 278static void smc_rx(struct net_device *dev);
 279static void set_rx_mode(struct net_device *dev);
 280static int s9k_config(struct net_device *dev, struct ifmap *map);
 281static void smc_set_xcvr(struct net_device *dev, int if_port);
 282static void smc_reset(struct net_device *dev);
 283static void media_check(struct timer_list *t);
 284static void mdio_sync(unsigned int addr);
 285static int mdio_read(struct net_device *dev, int phy_id, int loc);
 286static void mdio_write(struct net_device *dev, int phy_id, int loc, int value);
 287static int smc_link_ok(struct net_device *dev);
 288static const struct ethtool_ops ethtool_ops;
 289
 290static 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_eth_ioctl		= smc_ioctl,
 298	.ndo_set_mac_address 	= eth_mac_addr,
 299	.ndo_validate_addr	= eth_validate_addr,
 300};
 301
 302static 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
 333static 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
 348static int cvt_ascii_address(struct net_device *dev, char *s)
 349{
 350    u8 mac[ETH_ALEN];
 351    int i, j, da, c;
 352
 353    if (strlen(s) != 12)
 354	return -1;
 355    for (i = 0; i < 6; i++) {
 356	da = 0;
 357	for (j = 0; j < 2; j++) {
 358	    c = *s++;
 359	    da <<= 4;
 360	    da += ((c >= '0') && (c <= '9')) ?
 361		(c - '0') : ((c & 0x0f) + 9);
 362	}
 363	mac[i] = da;
 364    }
 365    eth_hw_addr_set(dev, mac);
 366    return 0;
 367}
 368
 369/*====================================================================
 370
 371    Configuration stuff for Megahertz cards
 372
 373    mhz_3288_power() is used to power up a 3288's ethernet chip.
 374    mhz_mfc_config() handles socket setup for multifunction (1144
 375    and 3288) cards.  mhz_setup() gets a card's hardware ethernet
 376    address.
 377
 378======================================================================*/
 379
 380static int mhz_3288_power(struct pcmcia_device *link)
 381{
 382    struct net_device *dev = link->priv;
 383    struct smc_private *smc = netdev_priv(dev);
 384    u_char tmp;
 385
 386    /* Read the ISR twice... */
 387    readb(smc->base+MEGAHERTZ_ISR);
 388    udelay(5);
 389    readb(smc->base+MEGAHERTZ_ISR);
 390
 391    /* Pause 200ms... */
 392    mdelay(200);
 393
 394    /* Now read and write the COR... */
 395    tmp = readb(smc->base + link->config_base + CISREG_COR);
 396    udelay(5);
 397    writeb(tmp, smc->base + link->config_base + CISREG_COR);
 398
 399    return 0;
 400}
 401
 402static int mhz_mfc_config_check(struct pcmcia_device *p_dev, void *priv_data)
 403{
 404	int k;
 405	p_dev->io_lines = 16;
 406	p_dev->resource[1]->start = p_dev->resource[0]->start;
 407	p_dev->resource[1]->end = 8;
 408	p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
 409	p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
 410	p_dev->resource[0]->end = 16;
 411	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
 412	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 413	for (k = 0; k < 0x400; k += 0x10) {
 414		if (k & 0x80)
 415			continue;
 416		p_dev->resource[0]->start = k ^ 0x300;
 417		if (!pcmcia_request_io(p_dev))
 418			return 0;
 419	}
 420	return -ENODEV;
 421}
 422
 423static int mhz_mfc_config(struct pcmcia_device *link)
 424{
 425    struct net_device *dev = link->priv;
 426    struct smc_private *smc = netdev_priv(dev);
 427    unsigned int offset;
 428    int i;
 429
 430    link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ |
 431	    CONF_AUTO_SET_IO;
 432
 433    /* The Megahertz combo cards have modem-like CIS entries, so
 434       we have to explicitly try a bunch of port combinations. */
 435    if (pcmcia_loop_config(link, mhz_mfc_config_check, NULL))
 436	    return -ENODEV;
 437
 438    dev->base_addr = link->resource[0]->start;
 439
 440    /* Allocate a memory window, for accessing the ISR */
 441    link->resource[2]->flags = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
 442    link->resource[2]->start = link->resource[2]->end = 0;
 443    i = pcmcia_request_window(link, link->resource[2], 0);
 444    if (i != 0)
 445	    return -ENODEV;
 446
 447    smc->base = ioremap(link->resource[2]->start,
 448		    resource_size(link->resource[2]));
 449    offset = (smc->manfid == MANFID_MOTOROLA) ? link->config_base : 0;
 450    i = pcmcia_map_mem_page(link, link->resource[2], offset);
 451    if ((i == 0) &&
 452	(smc->manfid == MANFID_MEGAHERTZ) &&
 453	(smc->cardid == PRODID_MEGAHERTZ_EM3288))
 454	    mhz_3288_power(link);
 455
 456    return 0;
 457}
 458
 459static int pcmcia_get_versmac(struct pcmcia_device *p_dev,
 460			      tuple_t *tuple,
 461			      void *priv)
 462{
 463	struct net_device *dev = priv;
 464	cisparse_t parse;
 465	u8 *buf;
 466
 467	if (pcmcia_parse_tuple(tuple, &parse))
 468		return -EINVAL;
 469
 470	buf = parse.version_1.str + parse.version_1.ofs[3];
 471
 472	if ((parse.version_1.ns > 3) && (cvt_ascii_address(dev, buf) == 0))
 473		return 0;
 474
 475	return -EINVAL;
 476};
 477
 478static int mhz_setup(struct pcmcia_device *link)
 479{
 480    struct net_device *dev = link->priv;
 481    size_t len;
 482    u8 *buf;
 483    int rc;
 484
 485    /* Read the station address from the CIS.  It is stored as the last
 486       (fourth) string in the Version 1 Version/ID tuple. */
 487    if ((link->prod_id[3]) &&
 488	(cvt_ascii_address(dev, link->prod_id[3]) == 0))
 489	    return 0;
 490
 491    /* Workarounds for broken cards start here. */
 492    /* Ugh -- the EM1144 card has two VERS_1 tuples!?! */
 493    if (!pcmcia_loop_tuple(link, CISTPL_VERS_1, pcmcia_get_versmac, dev))
 494	    return 0;
 495
 496    /* Another possibility: for the EM3288, in a special tuple */
 497    rc = -1;
 498    len = pcmcia_get_tuple(link, 0x81, &buf);
 499    if (buf && len >= 13) {
 500	    buf[12] = '\0';
 501	    if (cvt_ascii_address(dev, buf) == 0)
 502		    rc = 0;
 503    }
 504    kfree(buf);
 505
 506    return rc;
 507};
 508
 509/*======================================================================
 510
 511    Configuration stuff for the Motorola Mariner
 512
 513    mot_config() writes directly to the Mariner configuration
 514    registers because the CIS is just bogus.
 515
 516======================================================================*/
 517
 518static void mot_config(struct pcmcia_device *link)
 519{
 520    struct net_device *dev = link->priv;
 521    struct smc_private *smc = netdev_priv(dev);
 522    unsigned int ioaddr = dev->base_addr;
 523    unsigned int iouart = link->resource[1]->start;
 524
 525    /* Set UART base address and force map with COR bit 1 */
 526    writeb(iouart & 0xff,        smc->base + MOT_UART + CISREG_IOBASE_0);
 527    writeb((iouart >> 8) & 0xff, smc->base + MOT_UART + CISREG_IOBASE_1);
 528    writeb(MOT_NORMAL,           smc->base + MOT_UART + CISREG_COR);
 529
 530    /* Set SMC base address and force map with COR bit 1 */
 531    writeb(ioaddr & 0xff,        smc->base + MOT_LAN + CISREG_IOBASE_0);
 532    writeb((ioaddr >> 8) & 0xff, smc->base + MOT_LAN + CISREG_IOBASE_1);
 533    writeb(MOT_NORMAL,           smc->base + MOT_LAN + CISREG_COR);
 534
 535    /* Wait for things to settle down */
 536    mdelay(100);
 537}
 538
 539static int mot_setup(struct pcmcia_device *link)
 540{
 541    struct net_device *dev = link->priv;
 542    unsigned int ioaddr = dev->base_addr;
 543    int i, wait, loop;
 544    u8 mac[ETH_ALEN];
 545    u_int addr;
 546
 547    /* Read Ethernet address from Serial EEPROM */
 548
 549    for (i = 0; i < 3; i++) {
 550	SMC_SELECT_BANK(2);
 551	outw(MOT_EEPROM + i, ioaddr + POINTER);
 552	SMC_SELECT_BANK(1);
 553	outw((CTL_RELOAD | CTL_EE_SELECT), ioaddr + CONTROL);
 554
 555	for (loop = wait = 0; loop < 200; loop++) {
 556	    udelay(10);
 557	    wait = ((CTL_RELOAD | CTL_STORE) & inw(ioaddr + CONTROL));
 558	    if (wait == 0) break;
 559	}
 560	
 561	if (wait)
 562	    return -1;
 563	
 564	addr = inw(ioaddr + GENERAL);
 565	mac[2*i]   = addr & 0xff;
 566	mac[2*i+1] = (addr >> 8) & 0xff;
 567    }
 568    eth_hw_addr_set(dev, mac);
 569
 570    return 0;
 571}
 572
 573/*====================================================================*/
 574
 575static int smc_configcheck(struct pcmcia_device *p_dev, void *priv_data)
 576{
 577	p_dev->resource[0]->end = 16;
 578	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
 579	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 580
 581	return pcmcia_request_io(p_dev);
 582}
 583
 584static int smc_config(struct pcmcia_device *link)
 585{
 586    struct net_device *dev = link->priv;
 587    int i;
 588
 589    link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
 590
 591    i = pcmcia_loop_config(link, smc_configcheck, NULL);
 592    if (!i)
 593	    dev->base_addr = link->resource[0]->start;
 594
 595    return i;
 596}
 597
 598
 599static int smc_setup(struct pcmcia_device *link)
 600{
 601    struct net_device *dev = link->priv;
 602
 603    /* Check for a LAN function extension tuple */
 604    if (!pcmcia_get_mac_from_cis(link, dev))
 605	    return 0;
 606
 607    /* Try the third string in the Version 1 Version/ID tuple. */
 608    if (link->prod_id[2]) {
 609	    if (cvt_ascii_address(dev, link->prod_id[2]) == 0)
 610		    return 0;
 611    }
 612    return -1;
 613}
 614
 615/*====================================================================*/
 616
 617static int osi_config(struct pcmcia_device *link)
 618{
 619    struct net_device *dev = link->priv;
 620    static const unsigned int com[4] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
 621    int i, j;
 622
 623    link->config_flags |= CONF_ENABLE_SPKR | CONF_ENABLE_IRQ;
 624    link->resource[0]->end = 64;
 625    link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
 626    link->resource[1]->end = 8;
 627
 628    /* Enable Hard Decode, LAN, Modem */
 629    link->io_lines = 16;
 630    link->config_index = 0x23;
 631
 632    for (i = j = 0; j < 4; j++) {
 633	link->resource[1]->start = com[j];
 634	i = pcmcia_request_io(link);
 635	if (i == 0)
 636		break;
 637    }
 638    if (i != 0) {
 639	/* Fallback: turn off hard decode */
 640	link->config_index = 0x03;
 641	link->resource[1]->end = 0;
 642	i = pcmcia_request_io(link);
 643    }
 644    dev->base_addr = link->resource[0]->start + 0x10;
 645    return i;
 646}
 647
 648static int osi_load_firmware(struct pcmcia_device *link)
 649{
 650	const struct firmware *fw;
 651	int i, err;
 652
 653	err = request_firmware(&fw, FIRMWARE_NAME, &link->dev);
 654	if (err) {
 655		pr_err("Failed to load firmware \"%s\"\n", FIRMWARE_NAME);
 656		return err;
 657	}
 658
 659	/* Download the Seven of Diamonds firmware */
 660	for (i = 0; i < fw->size; i++) {
 661	    outb(fw->data[i], link->resource[0]->start + 2);
 662	    udelay(50);
 663	}
 664	release_firmware(fw);
 665	return err;
 666}
 667
 668static int pcmcia_osi_mac(struct pcmcia_device *p_dev,
 669			  tuple_t *tuple,
 670			  void *priv)
 671{
 672	struct net_device *dev = priv;
 
 673
 674	if (tuple->TupleDataLen < 8)
 675		return -EINVAL;
 676	if (tuple->TupleData[0] != 0x04)
 677		return -EINVAL;
 678
 679	eth_hw_addr_set(dev, &tuple->TupleData[2]);
 680	return 0;
 681};
 682
 683
 684static int osi_setup(struct pcmcia_device *link, u_short manfid, u_short cardid)
 685{
 686    struct net_device *dev = link->priv;
 687    int rc;
 688
 689    /* Read the station address from tuple 0x90, subtuple 0x04 */
 690    if (pcmcia_loop_tuple(link, 0x90, pcmcia_osi_mac, dev))
 691	    return -1;
 692
 693    if (((manfid == MANFID_OSITECH) &&
 694	 (cardid == PRODID_OSITECH_SEVEN)) ||
 695	((manfid == MANFID_PSION) &&
 696	 (cardid == PRODID_PSION_NET100))) {
 697	rc = osi_load_firmware(link);
 698	if (rc)
 699		return rc;
 700    } else if (manfid == MANFID_OSITECH) {
 701	/* Make sure both functions are powered up */
 702	set_bits(0x300, link->resource[0]->start + OSITECH_AUI_PWR);
 703	/* Now, turn on the interrupt for both card functions */
 704	set_bits(0x300, link->resource[0]->start + OSITECH_RESET_ISR);
 705	dev_dbg(&link->dev, "AUI/PWR: %4.4x RESET/ISR: %4.4x\n",
 706	      inw(link->resource[0]->start + OSITECH_AUI_PWR),
 707	      inw(link->resource[0]->start + OSITECH_RESET_ISR));
 708    }
 709    return 0;
 710}
 711
 712static int smc91c92_suspend(struct pcmcia_device *link)
 713{
 714	struct net_device *dev = link->priv;
 715
 716	if (link->open)
 717		netif_device_detach(dev);
 718
 719	return 0;
 720}
 721
 722static int smc91c92_resume(struct pcmcia_device *link)
 723{
 724	struct net_device *dev = link->priv;
 725	struct smc_private *smc = netdev_priv(dev);
 726	int i;
 727
 728	if ((smc->manfid == MANFID_MEGAHERTZ) &&
 729	    (smc->cardid == PRODID_MEGAHERTZ_EM3288))
 730		mhz_3288_power(link);
 731	if (smc->manfid == MANFID_MOTOROLA)
 732		mot_config(link);
 733	if ((smc->manfid == MANFID_OSITECH) &&
 734	    (smc->cardid != PRODID_OSITECH_SEVEN)) {
 735		/* Power up the card and enable interrupts */
 736		set_bits(0x0300, dev->base_addr-0x10+OSITECH_AUI_PWR);
 737		set_bits(0x0300, dev->base_addr-0x10+OSITECH_RESET_ISR);
 738	}
 739	if (((smc->manfid == MANFID_OSITECH) &&
 740	     (smc->cardid == PRODID_OSITECH_SEVEN)) ||
 741	    ((smc->manfid == MANFID_PSION) &&
 742	     (smc->cardid == PRODID_PSION_NET100))) {
 743		i = osi_load_firmware(link);
 744		if (i) {
 745			netdev_err(dev, "Failed to load firmware\n");
 746			return i;
 747		}
 748	}
 749	if (link->open) {
 750		smc_reset(dev);
 751		netif_device_attach(dev);
 752	}
 753
 754	return 0;
 755}
 756
 757
 758/*======================================================================
 759
 760    This verifies that the chip is some SMC91cXX variant, and returns
 761    the revision code if successful.  Otherwise, it returns -ENODEV.
 762
 763======================================================================*/
 764
 765static int check_sig(struct pcmcia_device *link)
 766{
 767    struct net_device *dev = link->priv;
 768    unsigned int ioaddr = dev->base_addr;
 769    int width;
 770    u_short s;
 771
 772    SMC_SELECT_BANK(1);
 773    if (inw(ioaddr + BANK_SELECT) >> 8 != 0x33) {
 774	/* Try powering up the chip */
 775	outw(0, ioaddr + CONTROL);
 776	mdelay(55);
 777    }
 778
 779    /* Try setting bus width */
 780    width = (link->resource[0]->flags == IO_DATA_PATH_WIDTH_AUTO);
 781    s = inb(ioaddr + CONFIG);
 782    if (width)
 783	s |= CFG_16BIT;
 784    else
 785	s &= ~CFG_16BIT;
 786    outb(s, ioaddr + CONFIG);
 787
 788    /* Check Base Address Register to make sure bus width is OK */
 789    s = inw(ioaddr + BASE_ADDR);
 790    if ((inw(ioaddr + BANK_SELECT) >> 8 == 0x33) &&
 791	((s >> 8) != (s & 0xff))) {
 792	SMC_SELECT_BANK(3);
 793	s = inw(ioaddr + REVISION);
 794	return s & 0xff;
 795    }
 796
 797    if (width) {
 798	    netdev_info(dev, "using 8-bit IO window\n");
 799
 800	    smc91c92_suspend(link);
 801	    pcmcia_fixup_iowidth(link);
 802	    smc91c92_resume(link);
 803	    return check_sig(link);
 804    }
 805    return -ENODEV;
 806}
 807
 808static int smc91c92_config(struct pcmcia_device *link)
 809{
 810    struct net_device *dev = link->priv;
 811    struct smc_private *smc = netdev_priv(dev);
 812    char *name;
 813    int i, rev, j = 0;
 814    unsigned int ioaddr;
 815    u_long mir;
 816
 817    dev_dbg(&link->dev, "smc91c92_config\n");
 818
 819    smc->manfid = link->manf_id;
 820    smc->cardid = link->card_id;
 821
 822    if ((smc->manfid == MANFID_OSITECH) &&
 823	(smc->cardid != PRODID_OSITECH_SEVEN)) {
 824	i = osi_config(link);
 825    } else if ((smc->manfid == MANFID_MOTOROLA) ||
 826	       ((smc->manfid == MANFID_MEGAHERTZ) &&
 827		((smc->cardid == PRODID_MEGAHERTZ_VARIOUS) ||
 828		 (smc->cardid == PRODID_MEGAHERTZ_EM3288)))) {
 829	i = mhz_mfc_config(link);
 830    } else {
 831	i = smc_config(link);
 832    }
 833    if (i)
 834	    goto config_failed;
 835
 836    i = pcmcia_request_irq(link, smc_interrupt);
 837    if (i)
 838	    goto config_failed;
 839    i = pcmcia_enable_device(link);
 840    if (i)
 841	    goto config_failed;
 842
 843    if (smc->manfid == MANFID_MOTOROLA)
 844	mot_config(link);
 845
 846    dev->irq = link->irq;
 847
 848    if ((if_port >= 0) && (if_port <= 2))
 849	dev->if_port = if_port;
 850    else
 851	dev_notice(&link->dev, "invalid if_port requested\n");
 852
 853    switch (smc->manfid) {
 854    case MANFID_OSITECH:
 855    case MANFID_PSION:
 856	i = osi_setup(link, smc->manfid, smc->cardid); break;
 857    case MANFID_SMC:
 858    case MANFID_NEW_MEDIA:
 859	i = smc_setup(link); break;
 860    case 0x128: /* For broken Megahertz cards */
 861    case MANFID_MEGAHERTZ:
 862	i = mhz_setup(link); break;
 863    case MANFID_MOTOROLA:
 864    default: /* get the hw address from EEPROM */
 865	i = mot_setup(link); break;
 866    }
 867
 868    if (i != 0) {
 869	dev_notice(&link->dev, "Unable to find hardware address.\n");
 870	goto config_failed;
 871    }
 872
 873    smc->duplex = 0;
 874    smc->rx_ovrn = 0;
 875
 876    rev = check_sig(link);
 877    name = "???";
 878    if (rev > 0)
 879	switch (rev >> 4) {
 880	case 3: name = "92"; break;
 881	case 4: name = ((rev & 15) >= 6) ? "96" : "94"; break;
 882	case 5: name = "95"; break;
 883	case 7: name = "100"; break;
 884	case 8: name = "100-FD"; break;
 885	case 9: name = "110"; break;
 886	}
 887
 888    ioaddr = dev->base_addr;
 889    if (rev > 0) {
 890	u_long mcr;
 891	SMC_SELECT_BANK(0);
 892	mir = inw(ioaddr + MEMINFO) & 0xff;
 893	if (mir == 0xff) mir++;
 894	/* Get scale factor for memory size */
 895	mcr = ((rev >> 4) > 3) ? inw(ioaddr + MEMCFG) : 0x0200;
 896	mir *= 128 * (1<<((mcr >> 9) & 7));
 897	SMC_SELECT_BANK(1);
 898	smc->cfg = inw(ioaddr + CONFIG) & ~CFG_AUI_SELECT;
 899	smc->cfg |= CFG_NO_WAIT | CFG_16BIT | CFG_STATIC;
 900	if (smc->manfid == MANFID_OSITECH)
 901	    smc->cfg |= CFG_IRQ_SEL_1 | CFG_IRQ_SEL_0;
 902	if ((rev >> 4) >= 7)
 903	    smc->cfg |= CFG_MII_SELECT;
 904    } else
 905	mir = 0;
 906
 907    if (smc->cfg & CFG_MII_SELECT) {
 908	SMC_SELECT_BANK(3);
 909
 910	for (i = 0; i < 32; i++) {
 911	    j = mdio_read(dev, i, 1);
 912	    if ((j != 0) && (j != 0xffff)) break;
 913	}
 914	smc->mii_if.phy_id = (i < 32) ? i : -1;
 915
 916	SMC_SELECT_BANK(0);
 917    }
 918
 919    SET_NETDEV_DEV(dev, &link->dev);
 920
 921    if (register_netdev(dev) != 0) {
 922	dev_err(&link->dev, "register_netdev() failed\n");
 923	goto config_undo;
 924    }
 925
 926    netdev_info(dev, "smc91c%s rev %d: io %#3lx, irq %d, hw_addr %pM\n",
 927		name, (rev & 0x0f), dev->base_addr, dev->irq, dev->dev_addr);
 928
 929    if (rev > 0) {
 930	if (mir & 0x3ff)
 931	    netdev_info(dev, "  %lu byte", mir);
 932	else
 933	    netdev_info(dev, "  %lu kb", mir>>10);
 934	pr_cont(" buffer, %s xcvr\n",
 935		(smc->cfg & CFG_MII_SELECT) ? "MII" : if_names[dev->if_port]);
 936    }
 937
 938    if (smc->cfg & CFG_MII_SELECT) {
 939	if (smc->mii_if.phy_id != -1) {
 940	    netdev_dbg(dev, "  MII transceiver at index %d, status %x\n",
 941		       smc->mii_if.phy_id, j);
 942	} else {
 943	    netdev_notice(dev, "  No MII transceivers found!\n");
 944	}
 945    }
 946    return 0;
 947
 948config_undo:
 949    unregister_netdev(dev);
 950config_failed:
 951    smc91c92_release(link);
 952    free_netdev(dev);
 953    return -ENODEV;
 954} /* smc91c92_config */
 955
 956static void smc91c92_release(struct pcmcia_device *link)
 957{
 958	dev_dbg(&link->dev, "smc91c92_release\n");
 959	if (link->resource[2]->end) {
 960		struct net_device *dev = link->priv;
 961		struct smc_private *smc = netdev_priv(dev);
 962		iounmap(smc->base);
 963	}
 964	pcmcia_disable_device(link);
 965}
 966
 967/*======================================================================
 968
 969    MII interface support for SMC91cXX based cards
 970======================================================================*/
 971
 972#define MDIO_SHIFT_CLK		0x04
 973#define MDIO_DATA_OUT		0x01
 974#define MDIO_DIR_WRITE		0x08
 975#define MDIO_DATA_WRITE0	(MDIO_DIR_WRITE)
 976#define MDIO_DATA_WRITE1	(MDIO_DIR_WRITE | MDIO_DATA_OUT)
 977#define MDIO_DATA_READ		0x02
 978
 979static void mdio_sync(unsigned int addr)
 980{
 981    int bits;
 982    for (bits = 0; bits < 32; bits++) {
 983	outb(MDIO_DATA_WRITE1, addr);
 984	outb(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
 985    }
 986}
 987
 988static int mdio_read(struct net_device *dev, int phy_id, int loc)
 989{
 990    unsigned int addr = dev->base_addr + MGMT;
 991    u_int cmd = (0x06<<10)|(phy_id<<5)|loc;
 992    int i, retval = 0;
 993
 994    mdio_sync(addr);
 995    for (i = 13; i >= 0; i--) {
 996	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
 997	outb(dat, addr);
 998	outb(dat | MDIO_SHIFT_CLK, addr);
 999    }
1000    for (i = 19; i > 0; i--) {
1001	outb(0, addr);
1002	retval = (retval << 1) | ((inb(addr) & MDIO_DATA_READ) != 0);
1003	outb(MDIO_SHIFT_CLK, addr);
1004    }
1005    return (retval>>1) & 0xffff;
1006}
1007
1008static void mdio_write(struct net_device *dev, int phy_id, int loc, int value)
1009{
1010    unsigned int addr = dev->base_addr + MGMT;
1011    u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
1012    int i;
1013
1014    mdio_sync(addr);
1015    for (i = 31; i >= 0; i--) {
1016	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
1017	outb(dat, addr);
1018	outb(dat | MDIO_SHIFT_CLK, addr);
1019    }
1020    for (i = 1; i >= 0; i--) {
1021	outb(0, addr);
1022	outb(MDIO_SHIFT_CLK, addr);
1023    }
1024}
1025
1026/*======================================================================
1027
1028    The driver core code, most of which should be common with a
1029    non-PCMCIA implementation.
1030
1031======================================================================*/
1032
1033#ifdef PCMCIA_DEBUG
1034static void smc_dump(struct net_device *dev)
1035{
1036    unsigned int ioaddr = dev->base_addr;
1037    u_short i, w, save;
1038    save = inw(ioaddr + BANK_SELECT);
1039    for (w = 0; w < 4; w++) {
1040	SMC_SELECT_BANK(w);
1041	netdev_dbg(dev, "bank %d: ", w);
1042	for (i = 0; i < 14; i += 2)
1043	    pr_cont(" %04x", inw(ioaddr + i));
1044	pr_cont("\n");
1045    }
1046    outw(save, ioaddr + BANK_SELECT);
1047}
1048#endif
1049
1050static int smc_open(struct net_device *dev)
1051{
1052    struct smc_private *smc = netdev_priv(dev);
1053    struct pcmcia_device *link = smc->p_dev;
1054
1055    dev_dbg(&link->dev, "%s: smc_open(%p), ID/Window %4.4x.\n",
1056	  dev->name, dev, inw(dev->base_addr + BANK_SELECT));
1057#ifdef PCMCIA_DEBUG
1058    smc_dump(dev);
1059#endif
1060
1061    /* Check that the PCMCIA card is still here. */
1062    if (!pcmcia_dev_present(link))
1063	return -ENODEV;
1064    /* Physical device present signature. */
1065    if (check_sig(link) < 0) {
1066	netdev_info(dev, "Yikes!  Bad chip signature!\n");
1067	return -ENODEV;
1068    }
1069    link->open++;
1070
1071    netif_start_queue(dev);
1072    smc->saved_skb = NULL;
1073    smc->packets_waiting = 0;
1074
1075    smc_reset(dev);
1076    timer_setup(&smc->media, media_check, 0);
1077    mod_timer(&smc->media, jiffies + HZ);
1078
1079    return 0;
1080} /* smc_open */
1081
1082/*====================================================================*/
1083
1084static 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
1121static 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    netif_trans_update(dev);
1179    netif_start_queue(dev);
1180}
1181
1182/*====================================================================*/
1183
1184static void smc_tx_timeout(struct net_device *dev, unsigned int txqueue)
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    netif_trans_update(dev); /* prevent tx timeout */
1194    smc->saved_skb = NULL;
1195    netif_wake_queue(dev);
1196}
1197
1198static 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
1268static 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
1310static 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
1344static 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
1436irq_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
1473static 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	struct smc_private *smc = netdev_priv(dev);
1499	
1500	/* Note: packet_length adds 5 or 6 extra bytes here! */
1501	skb = netdev_alloc_skb(dev, packet_length+2);
1502	
1503	if (skb == NULL) {
1504	    netdev_dbg(dev, "Low memory, packet dropped.\n");
1505	    dev->stats.rx_dropped++;
1506	    outw(MC_RELEASE, ioaddr + MMU_CMD);
1507	    return;
1508	}
1509	
1510	packet_length -= (rx_status & RS_ODDFRAME ? 5 : 6);
1511	skb_reserve(skb, 2);
1512	insw(ioaddr+DATA_1, skb_put(skb, packet_length),
1513	     (packet_length+1)>>1);
1514	skb->protocol = eth_type_trans(skb, dev);
1515	
1516	netif_rx(skb);
1517	smc->last_rx = jiffies;
1518	dev->stats.rx_packets++;
1519	dev->stats.rx_bytes += packet_length;
1520	if (rx_status & RS_MULTICAST)
1521	    dev->stats.multicast++;
1522    } else {
1523	/* error ... */
1524	dev->stats.rx_errors++;
1525	
1526	if (rx_status & RS_ALGNERR)  dev->stats.rx_frame_errors++;
1527	if (rx_status & (RS_TOOSHORT | RS_TOOLONG))
1528	    dev->stats.rx_length_errors++;
1529	if (rx_status & RS_BADCRC)	dev->stats.rx_crc_errors++;
1530    }
1531    /* Let the MMU free the memory of this packet. */
1532    outw(MC_RELEASE, ioaddr + MMU_CMD);
1533}
1534
1535/*======================================================================
1536
1537    Set the receive mode.
1538
1539    This routine is used by both the protocol level to notify us of
1540    promiscuous/multicast mode changes, and by the open/reset code to
1541    initialize the Rx registers.  We always set the multicast list and
1542    leave the receiver running.
1543
1544======================================================================*/
1545
1546static void set_rx_mode(struct net_device *dev)
1547{
1548    unsigned int ioaddr = dev->base_addr;
1549    struct smc_private *smc = netdev_priv(dev);
1550    unsigned char multicast_table[8];
1551    unsigned long flags;
1552    u_short rx_cfg_setting;
1553    int i;
1554
1555    memset(multicast_table, 0, sizeof(multicast_table));
1556
1557    if (dev->flags & IFF_PROMISC) {
1558	rx_cfg_setting = RxStripCRC | RxEnable | RxPromisc | RxAllMulti;
1559    } else if (dev->flags & IFF_ALLMULTI)
1560	rx_cfg_setting = RxStripCRC | RxEnable | RxAllMulti;
1561    else {
1562	if (!netdev_mc_empty(dev)) {
1563	    struct netdev_hw_addr *ha;
1564
1565	    netdev_for_each_mc_addr(ha, dev) {
1566		u_int position = ether_crc(6, ha->addr);
1567		multicast_table[position >> 29] |= 1 << ((position >> 26) & 7);
1568	    }
1569	}
1570	rx_cfg_setting = RxStripCRC | RxEnable;
1571    }
1572
1573    /* Load MC table and Rx setting into the chip without interrupts. */
1574    spin_lock_irqsave(&smc->lock, flags);
1575    SMC_SELECT_BANK(3);
1576    for (i = 0; i < 8; i++)
1577	outb(multicast_table[i], ioaddr + MULTICAST0 + i);
1578    SMC_SELECT_BANK(0);
1579    outw(rx_cfg_setting, ioaddr + RCR);
1580    SMC_SELECT_BANK(2);
1581    spin_unlock_irqrestore(&smc->lock, flags);
1582}
1583
1584/*======================================================================
1585
1586    Senses when a card's config changes. Here, it's coax or TP.
1587
1588======================================================================*/
1589
1590static int s9k_config(struct net_device *dev, struct ifmap *map)
1591{
1592    struct smc_private *smc = netdev_priv(dev);
1593    if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
1594	if (smc->cfg & CFG_MII_SELECT)
1595	    return -EOPNOTSUPP;
1596	else if (map->port > 2)
1597	    return -EINVAL;
1598	dev->if_port = map->port;
1599	netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]);
1600	smc_reset(dev);
1601    }
1602    return 0;
1603}
1604
1605/*======================================================================
1606
1607    Reset the chip, reloading every register that might be corrupted.
1608
1609======================================================================*/
1610
1611/*
1612  Set transceiver type, perhaps to something other than what the user
1613  specified in dev->if_port.
1614*/
1615static void smc_set_xcvr(struct net_device *dev, int if_port)
1616{
1617    struct smc_private *smc = netdev_priv(dev);
1618    unsigned int ioaddr = dev->base_addr;
1619    u_short saved_bank;
1620
1621    saved_bank = inw(ioaddr + BANK_SELECT);
1622    SMC_SELECT_BANK(1);
1623    if (if_port == 2) {
1624	outw(smc->cfg | CFG_AUI_SELECT, ioaddr + CONFIG);
1625	if ((smc->manfid == MANFID_OSITECH) &&
1626	    (smc->cardid != PRODID_OSITECH_SEVEN))
1627	    set_bits(OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1628	smc->media_status = ((dev->if_port == 0) ? 0x0001 : 0x0002);
1629    } else {
1630	outw(smc->cfg, ioaddr + CONFIG);
1631	if ((smc->manfid == MANFID_OSITECH) &&
1632	    (smc->cardid != PRODID_OSITECH_SEVEN))
1633	    mask_bits(~OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
1634	smc->media_status = ((dev->if_port == 0) ? 0x0012 : 0x4001);
1635    }
1636    SMC_SELECT_BANK(saved_bank);
1637}
1638
1639static void smc_reset(struct net_device *dev)
1640{
1641    unsigned int ioaddr = dev->base_addr;
1642    struct smc_private *smc = netdev_priv(dev);
1643    int i;
1644
1645    netdev_dbg(dev, "smc91c92 reset called.\n");
1646
1647    /* The first interaction must be a write to bring the chip out
1648       of sleep mode. */
1649    SMC_SELECT_BANK(0);
1650    /* Reset the chip. */
1651    outw(RCR_SOFTRESET, ioaddr + RCR);
1652    udelay(10);
1653
1654    /* Clear the transmit and receive configuration registers. */
1655    outw(RCR_CLEAR, ioaddr + RCR);
1656    outw(TCR_CLEAR, ioaddr + TCR);
1657
1658    /* Set the Window 1 control, configuration and station addr registers.
1659       No point in writing the I/O base register ;-> */
1660    SMC_SELECT_BANK(1);
1661    /* Automatically release successfully transmitted packets,
1662       Accept link errors, counter and Tx error interrupts. */
1663    outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
1664	 ioaddr + CONTROL);
1665    smc_set_xcvr(dev, dev->if_port);
1666    if ((smc->manfid == MANFID_OSITECH) &&
1667	(smc->cardid != PRODID_OSITECH_SEVEN))
1668	outw((dev->if_port == 2 ? OSI_AUI_PWR : 0) |
1669	     (inw(ioaddr-0x10+OSITECH_AUI_PWR) & 0xff00),
1670	     ioaddr - 0x10 + OSITECH_AUI_PWR);
1671
1672    /* Fill in the physical address.  The databook is wrong about the order! */
1673    for (i = 0; i < 6; i += 2)
1674	outw((dev->dev_addr[i+1]<<8)+dev->dev_addr[i],
1675	     ioaddr + ADDR0 + i);
1676
1677    /* Reset the MMU */
1678    SMC_SELECT_BANK(2);
1679    outw(MC_RESET, ioaddr + MMU_CMD);
1680    outw(0, ioaddr + INTERRUPT);
1681
1682    /* Re-enable the chip. */
1683    SMC_SELECT_BANK(0);
1684    outw(((smc->cfg & CFG_MII_SELECT) ? 0 : TCR_MONCSN) |
1685	 TCR_ENABLE | TCR_PAD_EN | smc->duplex, ioaddr + TCR);
1686    set_rx_mode(dev);
1687
1688    if (smc->cfg & CFG_MII_SELECT) {
1689	SMC_SELECT_BANK(3);
1690
1691	/* Reset MII */
1692	mdio_write(dev, smc->mii_if.phy_id, 0, 0x8000);
1693
1694	/* Advertise 100F, 100H, 10F, 10H */
1695	mdio_write(dev, smc->mii_if.phy_id, 4, 0x01e1);
1696
1697	/* Restart MII autonegotiation */
1698	mdio_write(dev, smc->mii_if.phy_id, 0, 0x0000);
1699	mdio_write(dev, smc->mii_if.phy_id, 0, 0x1200);
1700    }
1701
1702    /* Enable interrupts. */
1703    SMC_SELECT_BANK(2);
1704    outw((IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) << 8,
1705	 ioaddr + INTERRUPT);
1706}
1707
1708/*======================================================================
1709
1710    Media selection timer routine
1711
1712======================================================================*/
1713
1714static void media_check(struct timer_list *t)
1715{
1716    struct smc_private *smc = from_timer(smc, t, media);
1717    struct net_device *dev = smc->mii_if.dev;
1718    unsigned int ioaddr = dev->base_addr;
1719    u_short i, media, saved_bank;
1720    u_short link;
1721    unsigned long flags;
1722
1723    spin_lock_irqsave(&smc->lock, flags);
1724
1725    saved_bank = inw(ioaddr + BANK_SELECT);
1726
1727    if (!netif_device_present(dev))
1728	goto reschedule;
1729
1730    SMC_SELECT_BANK(2);
1731
1732    /* need MC_RESET to keep the memory consistent. errata? */
1733    if (smc->rx_ovrn) {
1734	outw(MC_RESET, ioaddr + MMU_CMD);
1735	smc->rx_ovrn = 0;
1736    }
1737    i = inw(ioaddr + INTERRUPT);
1738    SMC_SELECT_BANK(0);
1739    media = inw(ioaddr + EPH) & EPH_LINK_OK;
1740    SMC_SELECT_BANK(1);
1741    media |= (inw(ioaddr + CONFIG) & CFG_AUI_SELECT) ? 2 : 1;
1742
1743    SMC_SELECT_BANK(saved_bank);
1744    spin_unlock_irqrestore(&smc->lock, flags);
1745
1746    /* Check for pending interrupt with watchdog flag set: with
1747       this, we can limp along even if the interrupt is blocked */
1748    if (smc->watchdog++ && ((i>>8) & i)) {
1749	if (!smc->fast_poll)
1750	    netdev_info(dev, "interrupt(s) dropped!\n");
1751	local_irq_save(flags);
1752	smc_interrupt(dev->irq, dev);
1753	local_irq_restore(flags);
1754	smc->fast_poll = HZ;
1755    }
1756    if (smc->fast_poll) {
1757	smc->fast_poll--;
1758	smc->media.expires = jiffies + HZ/100;
1759	add_timer(&smc->media);
1760	return;
1761    }
1762
1763    spin_lock_irqsave(&smc->lock, flags);
1764
1765    saved_bank = inw(ioaddr + BANK_SELECT);
1766
1767    if (smc->cfg & CFG_MII_SELECT) {
1768	if (smc->mii_if.phy_id < 0)
1769	    goto reschedule;
1770
1771	SMC_SELECT_BANK(3);
1772	link = mdio_read(dev, smc->mii_if.phy_id, 1);
1773	if (!link || (link == 0xffff)) {
1774	    netdev_info(dev, "MII is missing!\n");
1775	    smc->mii_if.phy_id = -1;
1776	    goto reschedule;
1777	}
1778
1779	link &= 0x0004;
1780	if (link != smc->link_status) {
1781	    u_short p = mdio_read(dev, smc->mii_if.phy_id, 5);
1782	    netdev_info(dev, "%s link beat\n", link ? "found" : "lost");
1783	    smc->duplex = (((p & 0x0100) || ((p & 0x1c0) == 0x40))
1784			   ? TCR_FDUPLX : 0);
1785	    if (link) {
1786		netdev_info(dev, "autonegotiation complete: "
1787			    "%dbaseT-%cD selected\n",
1788			    (p & 0x0180) ? 100 : 10, smc->duplex ? 'F' : 'H');
1789	    }
1790	    SMC_SELECT_BANK(0);
1791	    outw(inw(ioaddr + TCR) | smc->duplex, ioaddr + TCR);
1792	    smc->link_status = link;
1793	}
1794	goto reschedule;
1795    }
1796
1797    /* Ignore collisions unless we've had no rx's recently */
1798    if (time_after(jiffies, smc->last_rx + HZ)) {
1799	if (smc->tx_err || (smc->media_status & EPH_16COL))
1800	    media |= EPH_16COL;
1801    }
1802    smc->tx_err = 0;
1803
1804    if (media != smc->media_status) {
1805	if ((media & smc->media_status & 1) &&
1806	    ((smc->media_status ^ media) & EPH_LINK_OK))
1807	    netdev_info(dev, "%s link beat\n",
1808			smc->media_status & EPH_LINK_OK ? "lost" : "found");
1809	else if ((media & smc->media_status & 2) &&
1810		 ((smc->media_status ^ media) & EPH_16COL))
1811	    netdev_info(dev, "coax cable %s\n",
1812			media & EPH_16COL ? "problem" : "ok");
1813	if (dev->if_port == 0) {
1814	    if (media & 1) {
1815		if (media & EPH_LINK_OK)
1816		    netdev_info(dev, "flipped to 10baseT\n");
1817		else
1818		    smc_set_xcvr(dev, 2);
1819	    } else {
1820		if (media & EPH_16COL)
1821		    smc_set_xcvr(dev, 1);
1822		else
1823		    netdev_info(dev, "flipped to 10base2\n");
1824	    }
1825	}
1826	smc->media_status = media;
1827    }
1828
1829reschedule:
1830    smc->media.expires = jiffies + HZ;
1831    add_timer(&smc->media);
1832    SMC_SELECT_BANK(saved_bank);
1833    spin_unlock_irqrestore(&smc->lock, flags);
1834}
1835
1836static int smc_link_ok(struct net_device *dev)
1837{
1838    unsigned int ioaddr = dev->base_addr;
1839    struct smc_private *smc = netdev_priv(dev);
1840
1841    if (smc->cfg & CFG_MII_SELECT) {
1842	return mii_link_ok(&smc->mii_if);
1843    } else {
1844        SMC_SELECT_BANK(0);
1845	return inw(ioaddr + EPH) & EPH_LINK_OK;
1846    }
1847}
1848
1849static void smc_netdev_get_ecmd(struct net_device *dev,
1850				struct ethtool_link_ksettings *ecmd)
1851{
1852	u16 tmp;
1853	unsigned int ioaddr = dev->base_addr;
1854	u32 supported;
1855
1856	supported = (SUPPORTED_TP | SUPPORTED_AUI |
1857		     SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full);
1858
1859	SMC_SELECT_BANK(1);
1860	tmp = inw(ioaddr + CONFIG);
1861	ecmd->base.port = (tmp & CFG_AUI_SELECT) ? PORT_AUI : PORT_TP;
1862	ecmd->base.speed = SPEED_10;
1863	ecmd->base.phy_address = ioaddr + MGMT;
1864
1865	SMC_SELECT_BANK(0);
1866	tmp = inw(ioaddr + TCR);
1867	ecmd->base.duplex = (tmp & TCR_FDUPLX) ? DUPLEX_FULL : DUPLEX_HALF;
1868
1869	ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported,
1870						supported);
1871}
1872
1873static int smc_netdev_set_ecmd(struct net_device *dev,
1874			       const struct ethtool_link_ksettings *ecmd)
1875{
1876	u16 tmp;
1877	unsigned int ioaddr = dev->base_addr;
1878
1879	if (ecmd->base.speed != SPEED_10)
1880		return -EINVAL;
1881	if (ecmd->base.duplex != DUPLEX_HALF &&
1882	    ecmd->base.duplex != DUPLEX_FULL)
1883		return -EINVAL;
1884	if (ecmd->base.port != PORT_TP && ecmd->base.port != PORT_AUI)
1885		return -EINVAL;
1886
1887	if (ecmd->base.port == PORT_AUI)
1888		smc_set_xcvr(dev, 1);
1889	else
1890		smc_set_xcvr(dev, 0);
1891
1892	SMC_SELECT_BANK(0);
1893	tmp = inw(ioaddr + TCR);
1894	if (ecmd->base.duplex == DUPLEX_FULL)
1895		tmp |= TCR_FDUPLX;
1896	else
1897		tmp &= ~TCR_FDUPLX;
1898	outw(tmp, ioaddr + TCR);
1899
1900	return 0;
1901}
1902
1903static int check_if_running(struct net_device *dev)
1904{
1905	if (!netif_running(dev))
1906		return -EINVAL;
1907	return 0;
1908}
1909
1910static void smc_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1911{
1912	strscpy(info->driver, DRV_NAME, sizeof(info->driver));
1913	strscpy(info->version, DRV_VERSION, sizeof(info->version));
1914}
1915
1916static int smc_get_link_ksettings(struct net_device *dev,
1917				  struct ethtool_link_ksettings *ecmd)
1918{
1919	struct smc_private *smc = netdev_priv(dev);
1920	unsigned int ioaddr = dev->base_addr;
1921	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1922	unsigned long flags;
1923
1924	spin_lock_irqsave(&smc->lock, flags);
1925	SMC_SELECT_BANK(3);
1926	if (smc->cfg & CFG_MII_SELECT)
1927		mii_ethtool_get_link_ksettings(&smc->mii_if, ecmd);
1928	else
1929		smc_netdev_get_ecmd(dev, ecmd);
1930	SMC_SELECT_BANK(saved_bank);
1931	spin_unlock_irqrestore(&smc->lock, flags);
1932	return 0;
1933}
1934
1935static int smc_set_link_ksettings(struct net_device *dev,
1936				  const struct ethtool_link_ksettings *ecmd)
1937{
1938	struct smc_private *smc = netdev_priv(dev);
1939	unsigned int ioaddr = dev->base_addr;
1940	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1941	int ret;
1942	unsigned long flags;
1943
1944	spin_lock_irqsave(&smc->lock, flags);
1945	SMC_SELECT_BANK(3);
1946	if (smc->cfg & CFG_MII_SELECT)
1947		ret = mii_ethtool_set_link_ksettings(&smc->mii_if, ecmd);
1948	else
1949		ret = smc_netdev_set_ecmd(dev, ecmd);
1950	SMC_SELECT_BANK(saved_bank);
1951	spin_unlock_irqrestore(&smc->lock, flags);
1952	return ret;
1953}
1954
1955static u32 smc_get_link(struct net_device *dev)
1956{
1957	struct smc_private *smc = netdev_priv(dev);
1958	unsigned int ioaddr = dev->base_addr;
1959	u16 saved_bank = inw(ioaddr + BANK_SELECT);
1960	u32 ret;
1961	unsigned long flags;
1962
1963	spin_lock_irqsave(&smc->lock, flags);
1964	SMC_SELECT_BANK(3);
1965	ret = smc_link_ok(dev);
1966	SMC_SELECT_BANK(saved_bank);
1967	spin_unlock_irqrestore(&smc->lock, flags);
1968	return ret;
1969}
1970
1971static int smc_nway_reset(struct net_device *dev)
1972{
1973	struct smc_private *smc = netdev_priv(dev);
1974	if (smc->cfg & CFG_MII_SELECT) {
1975		unsigned int ioaddr = dev->base_addr;
1976		u16 saved_bank = inw(ioaddr + BANK_SELECT);
1977		int res;
1978
1979		SMC_SELECT_BANK(3);
1980		res = mii_nway_restart(&smc->mii_if);
1981		SMC_SELECT_BANK(saved_bank);
1982
1983		return res;
1984	} else
1985		return -EOPNOTSUPP;
1986}
1987
1988static const struct ethtool_ops ethtool_ops = {
1989	.begin = check_if_running,
1990	.get_drvinfo = smc_get_drvinfo,
1991	.get_link = smc_get_link,
1992	.nway_reset = smc_nway_reset,
1993	.get_link_ksettings = smc_get_link_ksettings,
1994	.set_link_ksettings = smc_set_link_ksettings,
1995};
1996
1997static int smc_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1998{
1999	struct smc_private *smc = netdev_priv(dev);
2000	struct mii_ioctl_data *mii = if_mii(rq);
2001	int rc = 0;
2002	u16 saved_bank;
2003	unsigned int ioaddr = dev->base_addr;
2004	unsigned long flags;
2005
2006	if (!netif_running(dev))
2007		return -EINVAL;
2008
2009	spin_lock_irqsave(&smc->lock, flags);
2010	saved_bank = inw(ioaddr + BANK_SELECT);
2011	SMC_SELECT_BANK(3);
2012	rc = generic_mii_ioctl(&smc->mii_if, mii, cmd, NULL);
2013	SMC_SELECT_BANK(saved_bank);
2014	spin_unlock_irqrestore(&smc->lock, flags);
2015	return rc;
2016}
2017
2018static const struct pcmcia_device_id smc91c92_ids[] = {
2019	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0109, 0x0501),
2020	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0140, 0x000a),
2021	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3288", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x04cd2988, 0x46a52d63),
2022	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3336", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x0143b773, 0x46a52d63),
2023	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "EM1144T", "PCMCIA MODEM", 0xf510db04, 0x856d66c8, 0xbd6c43ef),
2024	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "XJEM1144/CCEM1144", "PCMCIA MODEM", 0xf510db04, 0x52d21e1e, 0xbd6c43ef),
2025	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Gateway 2000", "XJEM3336", 0xdd9989be, 0x662c394c),
2026	PCMCIA_PFC_DEVICE_PROD_ID12(0, "MEGAHERTZ", "XJEM1144/CCEM1144", 0xf510db04, 0x52d21e1e),
2027	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Diamonds Modem+Ethernet", 0xc2f80cd, 0x656947b9),
2028	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Hearts Modem+Ethernet", 0xc2f80cd, 0xdc9ba5ed),
2029	PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x016c, 0x0020),
2030	PCMCIA_DEVICE_MANF_CARD(0x016c, 0x0023),
2031	PCMCIA_DEVICE_PROD_ID123("BASICS by New Media Corporation", "Ethernet", "SMC91C94", 0x23c78a9d, 0x00b2e941, 0xcef397fb),
2032	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "Fast Ethernet PCCard", 0x78f308dc, 0xdcea68bc),
2033	PCMCIA_DEVICE_PROD_ID12("dit Co., Ltd.", "PC Card-10/100BTX", 0xe59365c8, 0x6a2161d1),
2034	PCMCIA_DEVICE_PROD_ID12("DYNALINK", "L100C", 0x6a26d1cf, 0xc16ce9c5),
2035	PCMCIA_DEVICE_PROD_ID12("Farallon", "Farallon Enet", 0x58d93fc4, 0x244734e9),
2036	PCMCIA_DEVICE_PROD_ID12("Megahertz", "CC10BT/2", 0x33234748, 0x3c95b953),
2037	PCMCIA_DEVICE_PROD_ID12("MELCO/SMC", "LPC-TX", 0xa2cd8e6d, 0x42da662a),
2038	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Four of Diamonds Ethernet", 0xc2f80cd, 0xb3466314),
2039	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Seven of Diamonds Ethernet", 0xc2f80cd, 0x194b650a),
2040	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "Fast Ethernet PCCard", 0x281f1c5d, 0xdcea68bc),
2041	PCMCIA_DEVICE_PROD_ID12("Psion", "10Mb Ethernet", 0x4ef00b21, 0x844be9e9),
2042	PCMCIA_DEVICE_PROD_ID12("SMC", "EtherEZ Ethernet 8020", 0xc4f8b18b, 0x4a0eeb2d),
2043	/* These conflict with other cards! */
2044	/* PCMCIA_DEVICE_MANF_CARD(0x0186, 0x0100), */
2045	/* PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), */
2046	PCMCIA_DEVICE_NULL,
2047};
2048MODULE_DEVICE_TABLE(pcmcia, smc91c92_ids);
2049
2050static struct pcmcia_driver smc91c92_cs_driver = {
2051	.owner		= THIS_MODULE,
2052	.name		= "smc91c92_cs",
2053	.probe		= smc91c92_probe,
2054	.remove		= smc91c92_detach,
2055	.id_table       = smc91c92_ids,
2056	.suspend	= smc91c92_suspend,
2057	.resume		= smc91c92_resume,
2058};
2059module_pcmcia_driver(smc91c92_cs_driver);