ixj_pcmcia.c

Go to the documentation of this file.

#include "ixj-ver.h"

#include <linux/module.h>

#include <linux/init.h>
#include <linux/kernel.h>   /* printk() */
#include <linux/fs.h>       /* everything... */
#include <linux/errno.h>    /* error codes */
#include <linux/slab.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>

#include "ixj.h"

/*
 *  PCMCIA service support for Quicknet cards
 */
 

typedef struct ixj_info_t {
    int ndev;
    struct ixj *port;
} ixj_info_t;

static void ixj_detach(struct pcmcia_device *p_dev);
static int ixj_config(struct pcmcia_device * link);
static void ixj_cs_release(struct pcmcia_device * link);

static int ixj_probe(struct pcmcia_device *p_dev)
{
    dev_dbg(&p_dev->dev, "ixj_attach()\n");
    /* Create new ixj device */
    p_dev->priv = kzalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
    if (!p_dev->priv) {
        return -ENOMEM;
    }

    return ixj_config(p_dev);
}

static void ixj_detach(struct pcmcia_device *link)
{
    dev_dbg(&link->dev, "ixj_detach\n");

    ixj_cs_release(link);

        kfree(link->priv);
}

static void ixj_get_serial(struct pcmcia_device * link, IXJ * j)
{
    char *str;
    int i, place;
    dev_dbg(&link->dev, "ixj_get_serial\n");

    str = link->prod_id[0];
    if (!str)
        goto failed;
    printk("%s", str);
    str = link->prod_id[1];
    if (!str)
        goto failed;
    printk(" %s", str);
    str = link->prod_id[2];
    if (!str)
        goto failed;
    place = 1;
    for (i = strlen(str) - 1; i >= 0; i--) {
        switch (str[i]) {
        case '0':
        case '1':
        case '2':
        case '3':
        case '4':
        case '5':
        case '6':
        case '7':
        case '8':
        case '9':
            j->serial += (str[i] - 48) * place;
            break;
        case 'A':
        case 'B':
        case 'C':
        case 'D':
        case 'E':
        case 'F':
            j->serial += (str[i] - 55) * place;
            break;
        case 'a':
        case 'b':
        case 'c':
        case 'd':
        case 'e':
        case 'f':
            j->serial += (str[i] - 87) * place;
            break;
        }
        place = place * 0x10;
    }
    str = link->prod_id[3];
    if (!str)
        goto failed;
    printk(" version %s\n", str);
failed:
    return;
}

static int ixj_config_check(struct pcmcia_device *p_dev, void *priv_data)
{
    p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
    p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
    p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
    p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
    p_dev->io_lines = 3;

    return pcmcia_request_io(p_dev);
}

static int ixj_config(struct pcmcia_device * link)
{
    IXJ *j;
    ixj_info_t *info;

    info = link->priv;
    dev_dbg(&link->dev, "ixj_config\n");

    link->config_flags = CONF_AUTO_SET_IO;

    if (pcmcia_loop_config(link, ixj_config_check, NULL))
        goto failed;

    if (pcmcia_enable_device(link))
        goto failed;

    /*
     *  Register the card with the core.
     */
    j = ixj_pcmcia_probe(link->resource[0]->start,
                 link->resource[0]->start + 0x10);

    info->ndev = 1;
    ixj_get_serial(link, j);
    return 0;

failed:
    ixj_cs_release(link);
    return -ENODEV;
}

static void ixj_cs_release(struct pcmcia_device *link)
{
    ixj_info_t *info = link->priv;
    dev_dbg(&link->dev, "ixj_cs_release\n");
    info->ndev = 0;
    pcmcia_disable_device(link);
}

static const struct pcmcia_device_id ixj_ids[] = {
    PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
    PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, ixj_ids);

static struct pcmcia_driver ixj_driver = {
    .owner      = THIS_MODULE,
    .name       = "ixj_cs",
    .probe      = ixj_probe,
    .remove     = ixj_detach,
    .id_table   = ixj_ids,
};

static int __init ixj_pcmcia_init(void)
{
    return pcmcia_register_driver(&ixj_driver);
}

static void ixj_pcmcia_exit(void)
{
    pcmcia_unregister_driver(&ixj_driver);
}

module_init(ixj_pcmcia_init);
module_exit(ixj_pcmcia_exit);

MODULE_LICENSE("GPL");