sedlbauer_cs.c

来自「LINUX 2.6.17.4的源码」· C语言 代码 · 共 507 行 · 第 1/2 页

      each of which describes a valid card configuration, including
      voltage, IO window, memory window, and interrupt settings.

      We make no assumptions about the card to be configured: we use
      just the information available in the CIS.  In an ideal world,
      this would work for any PCMCIA card, but it requires a complete
      and accurate CIS.  In practice, a driver usually "knows" most of
      these things without consulting the CIS, and most client drivers
      will only use the CIS to fill in implementation-defined details.
    */
    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
    while (1) {
	cistpl_cftable_entry_t dflt = { 0 };
	cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
	if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
		pcmcia_parse_tuple(link, &tuple, &parse) != 0)
	    goto next_entry;

	if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
	if (cfg->index == 0) goto next_entry;
	link->conf.ConfigIndex = cfg->index;
	
	/* Does this card need audio output? */
	if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
	    link->conf.Attributes |= CONF_ENABLE_SPKR;
	    link->conf.Status = CCSR_AUDIO_ENA;
	}
	
	/* Use power settings for Vcc and Vpp if present */
	/*  Note that the CIS values need to be rescaled */
	if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
	    if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000)
		goto next_entry;
	} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
	    if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM]/10000)
		goto next_entry;
	}
	    
	if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
	    link->conf.Vpp =
		cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
	else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
	    link->conf.Vpp =
		dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
	
	/* Do we need to allocate an interrupt? */
	if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
	    link->conf.Attributes |= CONF_ENABLE_IRQ;
	
	/* IO window settings */
	link->io.NumPorts1 = link->io.NumPorts2 = 0;
	if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
	    cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
	    link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
	    if (!(io->flags & CISTPL_IO_8BIT))
		link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
	    if (!(io->flags & CISTPL_IO_16BIT))
		link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
/* new in dummy.cs 2001/01/28 MN 
            link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
*/
	    link->io.BasePort1 = io->win[0].base;
	    link->io.NumPorts1 = io->win[0].len;
	    if (io->nwin > 1) {
		link->io.Attributes2 = link->io.Attributes1;
		link->io.BasePort2 = io->win[1].base;
		link->io.NumPorts2 = io->win[1].len;
	    }
	    /* This reserves IO space but doesn't actually enable it */
	    if (pcmcia_request_io(link, &link->io) != 0)
		goto next_entry;
	}

	/*
	  Now set up a common memory window, if needed.  There is room
	  in the struct pcmcia_device structure for one memory window handle,
	  but if the base addresses need to be saved, or if multiple
	  windows are needed, the info should go in the private data
	  structure for this device.

	  Note that the memory window base is a physical address, and
	  needs to be mapped to virtual space with ioremap() before it
	  is used.
	*/
	if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) {
	    cistpl_mem_t *mem =
		(cfg->mem.nwin) ? &cfg->mem : &dflt.mem;
	    req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
	    req.Attributes |= WIN_ENABLE;
	    req.Base = mem->win[0].host_addr;
	    req.Size = mem->win[0].len;
/* new in dummy.cs 2001/01/28 MN 
            if (req.Size < 0x1000)
                req.Size = 0x1000;
*/
	    req.AccessSpeed = 0;
	    if (pcmcia_request_window(&link, &req, &link->win) != 0)
		goto next_entry;
	    map.Page = 0; map.CardOffset = mem->win[0].card_addr;
	    if (pcmcia_map_mem_page(link->win, &map) != 0)
		goto next_entry;
	}
	/* If we got this far, we're cool! */
	break;

    next_entry:
	CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
    }

    /*
       Allocate an interrupt line.  Note that this does not assign a
       handler to the interrupt, unless the 'Handler' member of the
       irq structure is initialized.
    */
    if (link->conf.Attributes & CONF_ENABLE_IRQ)
	CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
	
    /*
       This actually configures the PCMCIA socket -- setting up
       the I/O windows and the interrupt mapping, and putting the
       card and host interface into "Memory and IO" mode.
    */
    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));

    /*
      At this point, the dev_node_t structure(s) need to be
      initialized and arranged in a linked list at link->dev.
    */
    sprintf(dev->node.dev_name, "sedlbauer");
    dev->node.major = dev->node.minor = 0;
    link->dev_node = &dev->node;

    /* Finally, report what we've done */
    printk(KERN_INFO "%s: index 0x%02x:",
	   dev->node.dev_name, link->conf.ConfigIndex);
    if (link->conf.Vpp)
	printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
    if (link->conf.Attributes & CONF_ENABLE_IRQ)
	printk(", irq %d", link->irq.AssignedIRQ);
    if (link->io.NumPorts1)
	printk(", io 0x%04x-0x%04x", link->io.BasePort1,
	       link->io.BasePort1+link->io.NumPorts1-1);
    if (link->io.NumPorts2)
	printk(" & 0x%04x-0x%04x", link->io.BasePort2,
	       link->io.BasePort2+link->io.NumPorts2-1);
    if (link->win)
	printk(", mem 0x%06lx-0x%06lx", req.Base,
	       req.Base+req.Size-1);
    printk("\n");

    icard.para[0] = link->irq.AssignedIRQ;
    icard.para[1] = link->io.BasePort1;
    icard.protocol = protocol;
    icard.typ = ISDN_CTYPE_SEDLBAUER_PCMCIA;
    
    last_ret = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->stop), &icard);
    if (last_ret < 0) {
    	printk(KERN_ERR "sedlbauer_cs: failed to initialize SEDLBAUER PCMCIA %d at i/o %#x\n",
    		last_ret, link->io.BasePort1);
    	sedlbauer_release(link);
	return -ENODEV;
    } else
    	((local_info_t*)link->priv)->cardnr = last_ret;

    return 0;

cs_failed:
    cs_error(link, last_fn, last_ret);
    sedlbauer_release(link);
    return -ENODEV;

} /* sedlbauer_config */

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

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

static void sedlbauer_release(struct pcmcia_device *link)
{
    local_info_t *local = link->priv;
    DEBUG(0, "sedlbauer_release(0x%p)\n", link);

    if (local) {
    	if (local->cardnr >= 0) {
    	    /* no unregister function with hisax */
	    HiSax_closecard(local->cardnr);
	}
    }

    pcmcia_disable_device(link);
} /* sedlbauer_release */

static int sedlbauer_suspend(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

	dev->stop = 1;

	return 0;
}

static int sedlbauer_resume(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

	dev->stop = 0;

	return 0;
}


static struct pcmcia_device_id sedlbauer_ids[] = {
	PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "speed star II", "V 3.1", 0x81fb79f5, 0xf3612e1d, 0x6b95c78a),
	PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D67", 0x81fb79f5, 0xe4e9bc12, 0x397b7e90),
	PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D98", 0x81fb79f5, 0xe4e9bc12, 0x2e5c7fce),
	PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (C) 93-94 VK", 0x81fb79f5, 0xe4e9bc12, 0x8db143fe),
	PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (c) 93-95 VK", 0x81fb79f5, 0xe4e9bc12, 0xb391ab4c),
	PCMCIA_DEVICE_PROD_ID12("HST High Soft Tech GmbH", "Saphir II B", 0xd79e0b84, 0x21d083ae),
/*	PCMCIA_DEVICE_PROD_ID1234("SEDLBAUER", 0x81fb79f5), */ /* too generic*/
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, sedlbauer_ids);

static struct pcmcia_driver sedlbauer_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "sedlbauer_cs",
	},
	.probe		= sedlbauer_probe,
	.remove		= sedlbauer_detach,
	.id_table	= sedlbauer_ids,
	.suspend	= sedlbauer_suspend,
	.resume		= sedlbauer_resume,
};

static int __init init_sedlbauer_cs(void)
{
	return pcmcia_register_driver(&sedlbauer_driver);
}

static void __exit exit_sedlbauer_cs(void)
{
	pcmcia_unregister_driver(&sedlbauer_driver);
}

module_init(init_sedlbauer_cs);
module_exit(exit_sedlbauer_cs);