pcnet_cs.c

ARM S3C2410 linux2.4 内核源码

    req.Base = 0; req.Size = 0;
    req.AccessSpeed = 0;
    link->win = (window_handle_t)link->handle;
    i = CardServices(RequestWindow, &link->win, &req);
    if (i != CS_SUCCESS) {
	cs_error(link->handle, RequestWindow, i);
	return NULL;
    }

    virt = ioremap(req.Base, req.Size);
    mem.Page = 0;
    for (i = 0; i < NR_INFO; i++) {
	mem.CardOffset = hw_info[i].offset & ~(req.Size-1);
	CardServices(MapMemPage, link->win, &mem);
	base = &virt[hw_info[i].offset & (req.Size-1)];
	if ((readb(base+0) == hw_info[i].a0) &&
	    (readb(base+2) == hw_info[i].a1) &&
	    (readb(base+4) == hw_info[i].a2))
	    break;
    }
    if (i < NR_INFO) {
	for (j = 0; j < 6; j++)
	    dev->dev_addr[j] = readb(base + (j<<1));
    }
    
    iounmap(virt);
    j = CardServices(ReleaseWindow, link->win);
    if (j != CS_SUCCESS)
	cs_error(link->handle, ReleaseWindow, j);
    return (i < NR_INFO) ? hw_info+i : NULL;
} /* get_hwinfo */

/*======================================================================

    This probes for a card's hardware address by reading the PROM.
    It checks the address against a list of known types, then falls
    back to a simple NE2000 clone signature check.

======================================================================*/

static hw_info_t *get_prom(dev_link_t *link)
{
    struct net_device *dev = link->priv;
    ioaddr_t ioaddr = dev->base_addr;
    u_char prom[32];
    int i, j;

    /* This is lifted straight from drivers/net/ne.c */
    struct {
	u_char value, offset;
    } program_seq[] = {
	{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
	{0x48,	EN0_DCFG},	/* Set byte-wide (0x48) access. */
	{0x00,	EN0_RCNTLO},	/* Clear the count regs. */
	{0x00,	EN0_RCNTHI},
	{0x00,	EN0_IMR},	/* Mask completion irq. */
	{0xFF,	EN0_ISR},
	{E8390_RXOFF, EN0_RXCR},	/* 0x20  Set to monitor */
	{E8390_TXOFF, EN0_TXCR},	/* 0x02  and loopback mode. */
	{32,	EN0_RCNTLO},
	{0x00,	EN0_RCNTHI},
	{0x00,	EN0_RSARLO},	/* DMA starting at 0x0000. */
	{0x00,	EN0_RSARHI},
	{E8390_RREAD+E8390_START, E8390_CMD},
    };

    pcnet_reset_8390(dev);
    mdelay(10);

    for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
	outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);

    for (i = 0; i < 32; i++)
	prom[i] = inb(ioaddr + PCNET_DATAPORT);
    for (i = 0; i < NR_INFO; i++) {
	if ((prom[0] == hw_info[i].a0) &&
	    (prom[2] == hw_info[i].a1) &&
	    (prom[4] == hw_info[i].a2))
	    break;
    }
    if ((i < NR_INFO) || ((prom[28] == 0x57) && (prom[30] == 0x57))) {
	for (j = 0; j < 6; j++)
	    dev->dev_addr[j] = prom[j<<1];
	return (i < NR_INFO) ? hw_info+i : &default_info;
    }
    return NULL;
} /* get_prom */

/*======================================================================

    For DL10019 based cards, like the Linksys EtherFast

======================================================================*/

static hw_info_t *get_dl10019(dev_link_t *link)
{
    struct net_device *dev = link->priv;
    int i;
    u_char sum;

    for (sum = 0, i = 0x14; i < 0x1c; i++)
	sum += inb_p(dev->base_addr + i);
    if (sum != 0xff)
	return NULL;
    for (i = 0; i < 6; i++)
	dev->dev_addr[i] = inb_p(dev->base_addr + 0x14 + i);
    i = inb(dev->base_addr + 0x1f);
    return ((i == 0x91)||(i == 0x99)) ? &dl10022_info : &dl10019_info;
}

/*======================================================================

    For Asix AX88190 based cards

======================================================================*/

static hw_info_t *get_ax88190(dev_link_t *link)
{
    struct net_device *dev = link->priv;
    ioaddr_t ioaddr = dev->base_addr;
    int i, j;

    /* Not much of a test, but the alternatives are messy */
    if (link->conf.ConfigBase != 0x03c0)
	return NULL;

    outb_p(0x01, ioaddr + EN0_DCFG);	/* Set word-wide access. */
    outb_p(0x00, ioaddr + EN0_RSARLO);	/* DMA starting at 0x0400. */
    outb_p(0x04, ioaddr + EN0_RSARHI);
    outb_p(E8390_RREAD+E8390_START, ioaddr + E8390_CMD);

    for (i = 0; i < 6; i += 2) {
	j = inw(ioaddr + PCNET_DATAPORT);
	dev->dev_addr[i] = j & 0xff;
	dev->dev_addr[i+1] = j >> 8;
    }
    printk(KERN_NOTICE "pcnet_cs: this is an AX88190 card!\n");
    printk(KERN_NOTICE "pcnet_cs: use axnet_cs instead.\n");
    return NULL;
}

/*======================================================================

    This should be totally unnecessary... but when we can't figure
    out the hardware address any other way, we'll let the user hard
    wire it when the module is initialized.

======================================================================*/

static hw_info_t *get_hwired(dev_link_t *link)
{
    struct net_device *dev = link->priv;
    int i;

    for (i = 0; i < 6; i++)
	if (hw_addr[i] != 0) break;
    if (i == 6)
	return NULL;

    for (i = 0; i < 6; i++)
	dev->dev_addr[i] = hw_addr[i];

    return &default_info;
} /* get_hwired */

/*======================================================================

    pcnet_config() is scheduled to run after a CARD_INSERTION event
    is received, to configure the PCMCIA socket, and to make the
    ethernet device available to the system.

======================================================================*/

#define CS_CHECK(fn, args...) \
while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed

#define CFG_CHECK(fn, args...) \
if (CardServices(fn, args) != 0) goto next_entry

static int try_io_port(dev_link_t *link)
{
    int j, ret;
    if (link->io.NumPorts1 == 32) {
	link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
	if (link->io.NumPorts2 > 0) {
	    /* for master/slave multifunction cards */
	    link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
	    link->irq.Attributes = 
		IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
	}
    } else {
	/* This should be two 16-port windows */
	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
    }
    if (link->io.BasePort1 == 0) {
	link->io.IOAddrLines = 16;
	for (j = 0; j < 0x400; j += 0x20) {
	    link->io.BasePort1 = j ^ 0x300;
	    link->io.BasePort2 = (j ^ 0x300) + 0x10;
	    ret = CardServices(RequestIO, link->handle, &link->io);
	    if (ret == CS_SUCCESS) return ret;
	}
	return ret;
    } else {
	return CardServices(RequestIO, link->handle, &link->io);
    }
}

static void pcnet_config(dev_link_t *link)
{
    client_handle_t handle = link->handle;
    pcnet_dev_t *info = link->priv;
    struct net_device *dev = &info->dev;
    tuple_t tuple;
    cisparse_t parse;
    int i, last_ret, last_fn, start_pg, stop_pg, cm_offset;
    int manfid = 0, prodid = 0, has_shmem = 0;
    u_short buf[64];
    config_info_t conf;
    hw_info_t *hw_info;

    DEBUG(0, "pcnet_config(0x%p)\n", link);

    tuple.Attributes = 0;
    tuple.TupleData = (cisdata_t *)buf;
    tuple.TupleDataMax = sizeof(buf);
    tuple.TupleOffset = 0;
    tuple.DesiredTuple = CISTPL_CONFIG;
    CS_CHECK(GetFirstTuple, handle, &tuple);
    CS_CHECK(GetTupleData, handle, &tuple);
    CS_CHECK(ParseTuple, handle, &tuple, &parse);
    link->conf.ConfigBase = parse.config.base;
    link->conf.Present = parse.config.rmask[0];

    /* Configure card */
    link->state |= DEV_CONFIG;

    /* Look up current Vcc */
    CS_CHECK(GetConfigurationInfo, handle, &conf);
    link->conf.Vcc = conf.Vcc;

    tuple.DesiredTuple = CISTPL_MANFID;
    tuple.Attributes = TUPLE_RETURN_COMMON;
    if ((CardServices(GetFirstTuple, handle, &tuple) == CS_SUCCESS) &&
 	(CardServices(GetTupleData, handle, &tuple) == CS_SUCCESS)) {
	manfid = le16_to_cpu(buf[0]);
	prodid = le16_to_cpu(buf[1]);
    }
    
    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
    tuple.Attributes = 0;
    CS_CHECK(GetFirstTuple, handle, &tuple);
    while (last_ret == CS_SUCCESS) {
	cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
	cistpl_io_t *io = &(parse.cftable_entry.io);
	
	CFG_CHECK(GetTupleData, handle, &tuple);
	CFG_CHECK(ParseTuple, handle, &tuple, &parse);
	if ((cfg->index == 0) || (cfg->io.nwin == 0))
	    goto next_entry;
	
	link->conf.ConfigIndex = cfg->index;
	/* For multifunction cards, by convention, we configure the
	   network function with window 0, and serial with window 1 */
	if (io->nwin > 1) {
	    i = (io->win[1].len > io->win[0].len);
	    link->io.BasePort2 = io->win[1-i].base;
	    link->io.NumPorts2 = io->win[1-i].len;
	} else {
	    i = link->io.NumPorts2 = 0;
	}
	has_shmem = ((cfg->mem.nwin == 1) &&
		     (cfg->mem.win[0].len >= 0x4000));
	link->io.BasePort1 = io->win[i].base;
	link->io.NumPorts1 = io->win[i].len;
	link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
	if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
	    last_ret = try_io_port(link);
	    if (last_ret == CS_SUCCESS) break;
	}
    next_entry:
	last_ret = CardServices(GetNextTuple, handle, &tuple);
    }
    if (last_ret != CS_SUCCESS) {
	cs_error(handle, RequestIO, last_ret);
	goto failed;
    }

    CS_CHECK(RequestIRQ, handle, &link->irq);
    
    if (link->io.NumPorts2 == 8) {
	link->conf.Attributes |= CONF_ENABLE_SPKR;
	link->conf.Status = CCSR_AUDIO_ENA;
    }
    if ((manfid == MANFID_IBM) &&
	(prodid == PRODID_IBM_HOME_AND_AWAY))
	link->conf.ConfigIndex |= 0x10;
    
    CS_CHECK(RequestConfiguration, handle, &link->conf);
    dev->irq = link->irq.AssignedIRQ;
    dev->base_addr = link->io.BasePort1;
    if (info->flags & HAS_MISC_REG) {
	if ((if_port == 1) || (if_port == 2))
	    dev->if_port = if_port;
	else
	    printk(KERN_NOTICE "pcnet_cs: invalid if_port requested\n");
    } else {
	dev->if_port = 0;
    }
    if (register_netdev(dev) != 0) {
	printk(KERN_NOTICE "pcnet_cs: register_netdev() failed\n");
	goto failed;
    }

    hw_info = get_hwinfo(link);
    if (hw_info == NULL)
	hw_info = get_prom(link);
    if (hw_info == NULL)
	hw_info = get_dl10019(link);
    if (hw_info == NULL)
	hw_info = get_ax88190(link);
    if (hw_info == NULL)
	hw_info = get_hwired(link);
    
    if (hw_info == NULL) {
	printk(KERN_NOTICE "pcnet_cs: unable to read hardware net"
	       " address for io base %#3lx\n", dev->base_addr);
	unregister_netdev(dev);
	goto failed;
    }

    info->flags = hw_info->flags;
    /* Check for user overrides */
    info->flags |= (delay_output) ? DELAY_OUTPUT : 0;
    if ((manfid == MANFID_SOCKET) &&
	((prodid == PRODID_SOCKET_LPE) ||
	 (prodid == PRODID_SOCKET_LPE_CF) ||
	 (prodid == PRODID_SOCKET_EIO)))
	info->flags &= ~USE_BIG_BUF;
    if (!use_big_buf)
	info->flags &= ~USE_BIG_BUF;
    
    if (info->flags & USE_BIG_BUF) {
	start_pg = SOCKET_START_PG;
	stop_pg = SOCKET_STOP_PG;
	cm_offset = 0x10000;
    } else {
	start_pg = PCNET_START_PG;
	stop_pg = PCNET_STOP_PG;
	cm_offset = 0;
    }

    /* has_shmem is ignored if use_shmem != -1 */
    if ((use_shmem == 0) || (!has_shmem && (use_shmem == -1)) ||
	(setup_shmem_window(link, start_pg, stop_pg, cm_offset) != 0))
	setup_dma_config(link, start_pg, stop_pg);

    ei_status.name = "NE2000";
    ei_status.word16 = 1;
    ei_status.reset_8390 = &pcnet_reset_8390;

    strcpy(info->node.dev_name, dev->name);
    link->dev = &info->node;
    link->state &= ~DEV_CONFIG_PENDING;

    if (info->flags & (IS_DL10019|IS_DL10022)) {
	u_char id = inb(dev->base_addr + 0x1a);
	dev->do_ioctl = &ei_ioctl;
	mii_phy_probe(dev);
	printk(KERN_INFO "%s: NE2000 (DL100%d rev %02x): ",
	       dev->name, ((info->flags & IS_DL10022) ? 22 : 19), id);
	if (info->pna_phy)
	    printk("PNA, ");
    } else
	printk(KERN_INFO "%s: NE2000 Compatible: ", dev->name);
    printk("io %#3lx, irq %d,", dev->base_addr, dev->irq);
    if (info->flags & USE_SHMEM)
	printk (" mem %#5lx,", dev->mem_start);
    if (info->flags & HAS_MISC_REG)
	printk(" %s xcvr,", if_names[dev->if_port]);
    printk(" hw_addr ");
    for (i = 0; i < 6; i++)
	printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
    return;

cs_failed:
    cs_error(link->handle, last_fn, last_ret);
failed:
    pcnet_release((u_long)link);
    return;
} /* pcnet_config */

/*======================================================================

    After a card is removed, pcnet_release() will unregister the net
    device, and release the PCMCIA configuration.  If the device is
    still open, this will be postponed until it is closed.

======================================================================*/