avma1_cs.c

linux-2.6.15.6

}

static int next_tuple(client_handle_t handle, tuple_t *tuple,
		     cisparse_t *parse)
{
    int i = pcmcia_get_next_tuple(handle, tuple);
    if (i != CS_SUCCESS) return i;
    return get_tuple(handle, tuple, parse);
}

static void avma1cs_config(dev_link_t *link)
{
    client_handle_t handle;
    tuple_t tuple;
    cisparse_t parse;
    cistpl_cftable_entry_t *cf = &parse.cftable_entry;
    local_info_t *dev;
    int i;
    u_char buf[64];
    char devname[128];
    IsdnCard_t	icard;
    int busy = 0;
    
    handle = link->handle;
    dev = link->priv;

    DEBUG(0, "avma1cs_config(0x%p)\n", link);

    /*
       This reads the card's CONFIG tuple to find its configuration
       registers.
    */
    do {
	tuple.DesiredTuple = CISTPL_CONFIG;
	i = pcmcia_get_first_tuple(handle, &tuple);
	if (i != CS_SUCCESS) break;
	tuple.TupleData = buf;
	tuple.TupleDataMax = 64;
	tuple.TupleOffset = 0;
	i = pcmcia_get_tuple_data(handle, &tuple);
	if (i != CS_SUCCESS) break;
	i = pcmcia_parse_tuple(handle, &tuple, &parse);
	if (i != CS_SUCCESS) break;
	link->conf.ConfigBase = parse.config.base;
    } while (0);
    if (i != CS_SUCCESS) {
	cs_error(link->handle, ParseTuple, i);
	link->state &= ~DEV_CONFIG_PENDING;
	return;
    }
    
    /* Configure card */
    link->state |= DEV_CONFIG;

    do {

	tuple.Attributes = 0;
	tuple.TupleData = buf;
	tuple.TupleDataMax = 254;
	tuple.TupleOffset = 0;
	tuple.DesiredTuple = CISTPL_VERS_1;

	devname[0] = 0;
	if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
	    strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1], 
			sizeof(devname));
	}
	/*
         * find IO port
         */
	tuple.TupleData = (cisdata_t *)buf;
	tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
	tuple.Attributes = 0;
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	i = first_tuple(handle, &tuple, &parse);
	while (i == CS_SUCCESS) {
	    if (cf->io.nwin > 0) {
		link->conf.ConfigIndex = cf->index;
		link->io.BasePort1 = cf->io.win[0].base;
		link->io.NumPorts1 = cf->io.win[0].len;
		link->io.NumPorts2 = 0;
		printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
			link->io.BasePort1,
			link->io.BasePort1+link->io.NumPorts1 - 1);
		i = pcmcia_request_io(link->handle, &link->io);
		if (i == CS_SUCCESS) goto found_port;
	    }
	    i = next_tuple(handle, &tuple, &parse);
	}

found_port:
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestIO, i);
	    break;
	}
	
	/*
	 * allocate an interrupt line
	 */
	i = pcmcia_request_irq(link->handle, &link->irq);
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestIRQ, i);
	    pcmcia_release_io(link->handle, &link->io);
	    break;
	}
	
	/*
	 * configure the PCMCIA socket
	 */
	i = pcmcia_request_configuration(link->handle, &link->conf);
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestConfiguration, i);
	    pcmcia_release_io(link->handle, &link->io);
	    pcmcia_release_irq(link->handle, &link->irq);
	    break;
	}

    } while (0);

    /* At this point, the dev_node_t structure(s) should be
       initialized and arranged in a linked list at link->dev. */

    strcpy(dev->node.dev_name, "A1");
    dev->node.major = 45;
    dev->node.minor = 0;
    link->dev = &dev->node;
    
    link->state &= ~DEV_CONFIG_PENDING;
    /* If any step failed, release any partially configured state */
    if (i != 0) {
	avma1cs_release(link);
	return;
    }

    printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
				link->io.BasePort1, link->irq.AssignedIRQ);

    icard.para[0] = link->irq.AssignedIRQ;
    icard.para[1] = link->io.BasePort1;
    icard.protocol = isdnprot;
    icard.typ = ISDN_CTYPE_A1_PCMCIA;
    
    i = hisax_init_pcmcia(link, &busy, &icard);
    if (i < 0) {
    	printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
	avma1cs_release(link);
	return;
    }
    dev->node.minor = i;

} /* avma1cs_config */

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

    After a card is removed, avma1cs_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.
    
======================================================================*/

static void avma1cs_release(dev_link_t *link)
{
    local_info_t *local = link->priv;

    DEBUG(0, "avma1cs_release(0x%p)\n", link);

    /* no unregister function with hisax */
    HiSax_closecard(local->node.minor);

    /* Unlink the device chain */
    link->dev = NULL;
    
    /* Don't bother checking to see if these succeed or not */
    pcmcia_release_configuration(link->handle);
    pcmcia_release_io(link->handle, &link->io);
    pcmcia_release_irq(link->handle, &link->irq);
    link->state &= ~DEV_CONFIG;
    
    if (link->state & DEV_STALE_LINK)
	avma1cs_detach(link);
} /* avma1cs_release */

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

    The card status event handler.  Mostly, this schedules other
    stuff to run after an event is received.  A CARD_REMOVAL event
    also sets some flags to discourage the net drivers from trying
    to talk to the card any more.

    When a CARD_REMOVAL event is received, we immediately set a flag
    to block future accesses to this device.  All the functions that
    actually access the device should check this flag to make sure
    the card is still present.
    
======================================================================*/

static int avma1cs_event(event_t event, int priority,
			  event_callback_args_t *args)
{
    dev_link_t *link = args->client_data;

    DEBUG(1, "avma1cs_event(0x%06x)\n", event);
    
    switch (event) {
	case CS_EVENT_CARD_REMOVAL:
	    if (link->state & DEV_CONFIG)
		avma1cs_release(link);
	    break;
	case CS_EVENT_CARD_INSERTION:
	    link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
	    avma1cs_config(link);
	    break;
	case CS_EVENT_PM_SUSPEND:
	    link->state |= DEV_SUSPEND;
	    /* Fall through... */
	case CS_EVENT_RESET_PHYSICAL:
	    if (link->state & DEV_CONFIG)
		pcmcia_release_configuration(link->handle);
	    break;
	case CS_EVENT_PM_RESUME:
	    link->state &= ~DEV_SUSPEND;
	    /* Fall through... */
	case CS_EVENT_CARD_RESET:
 	    if (link->state & DEV_CONFIG)
		pcmcia_request_configuration(link->handle, &link->conf);
	    break;
    }
    return 0;
} /* avma1cs_event */

static struct pcmcia_device_id avma1cs_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
	PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);

static struct pcmcia_driver avma1cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "avma1_cs",
	},
	.attach		= avma1cs_attach,
	.event		= avma1cs_event,
	.detach		= avma1cs_detach,
	.id_table	= avma1cs_ids,
};
 
/*====================================================================*/

static int __init init_avma1_cs(void)
{
	return(pcmcia_register_driver(&avma1cs_driver));
}

static void __exit exit_avma1_cs(void)
{
	pcmcia_unregister_driver(&avma1cs_driver);
	BUG_ON(dev_list != NULL);
}

module_init(init_avma1_cs);
module_exit(exit_avma1_cs);