pcmciamtd.c

Go to the documentation of this file.

/*
 * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
 *
 * Author: Simon Evans <[email protected]>
 *
 * Copyright (C) 2002 Simon Evans
 *
 * Licence: GPL
 *
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <asm/io.h>

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

#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>

#define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)

#define DRIVER_DESC "PCMCIA Flash memory card driver"

/* Size of the PCMCIA address space: 26 bits = 64 MB */
#define MAX_PCMCIA_ADDR 0x4000000

struct pcmciamtd_dev {
    struct pcmcia_device    *p_dev;
    caddr_t     win_base;   /* ioremapped address of PCMCIA window */
    unsigned int    win_size;   /* size of window */
    unsigned int    offset;     /* offset into card the window currently points at */
    struct map_info pcmcia_map;
    struct mtd_info *mtd_info;
    int     vpp;
    char        mtd_name[sizeof(struct cistpl_vers_1_t)];
};


/* Module parameters */

/* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
static int bankwidth = 2;

/* Speed of memory accesses, in ns */
static int mem_speed;

/* Force the size of an SRAM card */
static int force_size;

/* Force Vpp */
static int vpp;

/* Set Vpp */
static int setvpp;

/* Force card to be treated as FLASH, ROM or RAM */
static int mem_type;

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Simon Evans <[email protected]>");
MODULE_DESCRIPTION(DRIVER_DESC);
module_param(bankwidth, int, 0);
MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
module_param(mem_speed, int, 0);
MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
module_param(force_size, int, 0);
MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
module_param(setvpp, int, 0);
MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
module_param(vpp, int, 0);
MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
module_param(mem_type, int, 0);
MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");


/* read/write{8,16} copy_{from,to} routines with window remapping
 * to access whole card
 */
static caddr_t remap_window(struct map_info *map, unsigned long to)
{
    struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
    struct resource *win = (struct resource *) map->map_priv_2;
    unsigned int offset;
    int ret;

    if (!pcmcia_dev_present(dev->p_dev)) {
        pr_debug("device removed\n");
        return 0;
    }

    offset = to & ~(dev->win_size-1);
    if (offset != dev->offset) {
        pr_debug("Remapping window from 0x%8.8x to 0x%8.8x\n",
              dev->offset, offset);
        ret = pcmcia_map_mem_page(dev->p_dev, win, offset);
        if (ret != 0)
            return NULL;
        dev->offset = offset;
    }
    return dev->win_base + (to & (dev->win_size-1));
}


static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
{
    caddr_t addr;
    map_word d = {{0}};

    addr = remap_window(map, ofs);
    if(!addr)
        return d;

    d.x[0] = readb(addr);
    pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n", ofs, addr, d.x[0]);
    return d;
}


static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
{
    caddr_t addr;
    map_word d = {{0}};

    addr = remap_window(map, ofs);
    if(!addr)
        return d;

    d.x[0] = readw(addr);
    pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n", ofs, addr, d.x[0]);
    return d;
}


static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
    struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
    unsigned long win_size = dev->win_size;

    pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
    while(len) {
        int toread = win_size - (from & (win_size-1));
        caddr_t addr;

        if(toread > len)
            toread = len;

        addr = remap_window(map, from);
        if(!addr)
            return;

        pr_debug("memcpy from %p to %p len = %d\n", addr, to, toread);
        memcpy_fromio(to, addr, toread);
        len -= toread;
        to += toread;
        from += toread;
    }
}


static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
{
    caddr_t addr = remap_window(map, adr);

    if(!addr)
        return;

    pr_debug("adr = 0x%08lx (%p)  data = 0x%02lx\n", adr, addr, d.x[0]);
    writeb(d.x[0], addr);
}


static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
{
    caddr_t addr = remap_window(map, adr);
    if(!addr)
        return;

    pr_debug("adr = 0x%08lx (%p)  data = 0x%04lx\n", adr, addr, d.x[0]);
    writew(d.x[0], addr);
}


static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
    struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
    unsigned long win_size = dev->win_size;

    pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
    while(len) {
        int towrite = win_size - (to & (win_size-1));
        caddr_t addr;

        if(towrite > len)
            towrite = len;

        addr = remap_window(map, to);
        if(!addr)
            return;

        pr_debug("memcpy from %p to %p len = %d\n", from, addr, towrite);
        memcpy_toio(addr, from, towrite);
        len -= towrite;
        to += towrite;
        from += towrite;
    }
}


/* read/write{8,16} copy_{from,to} routines with direct access */

#define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))

static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;
    map_word d = {{0}};

    if(DEV_REMOVED(map))
        return d;

    d.x[0] = readb(win_base + ofs);
    pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n",
          ofs, win_base + ofs, d.x[0]);
    return d;
}


static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;
    map_word d = {{0}};

    if(DEV_REMOVED(map))
        return d;

    d.x[0] = readw(win_base + ofs);
    pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n",
          ofs, win_base + ofs, d.x[0]);
    return d;
}


static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;

    if(DEV_REMOVED(map))
        return;

    pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
    memcpy_fromio(to, win_base + from, len);
}


static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;

    if(DEV_REMOVED(map))
        return;

    pr_debug("adr = 0x%08lx (%p)  data = 0x%02lx\n",
          adr, win_base + adr, d.x[0]);
    writeb(d.x[0], win_base + adr);
}


static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;

    if(DEV_REMOVED(map))
        return;

    pr_debug("adr = 0x%08lx (%p)  data = 0x%04lx\n",
          adr, win_base + adr, d.x[0]);
    writew(d.x[0], win_base + adr);
}


static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
    caddr_t win_base = (caddr_t)map->map_priv_2;

    if(DEV_REMOVED(map))
        return;

    pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
    memcpy_toio(win_base + to, from, len);
}


static DEFINE_SPINLOCK(pcmcia_vpp_lock);
static int pcmcia_vpp_refcnt;
static void pcmciamtd_set_vpp(struct map_info *map, int on)
{
    struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
    struct pcmcia_device *link = dev->p_dev;
    unsigned long flags;

    pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
    spin_lock_irqsave(&pcmcia_vpp_lock, flags);
    if (on) {
        if (++pcmcia_vpp_refcnt == 1)   /* first nested 'on' */
            pcmcia_fixup_vpp(link, dev->vpp);
    } else {
        if (--pcmcia_vpp_refcnt == 0)   /* last nested 'off' */
            pcmcia_fixup_vpp(link, 0);
    }
    spin_unlock_irqrestore(&pcmcia_vpp_lock, flags);
}


static void pcmciamtd_release(struct pcmcia_device *link)
{
    struct pcmciamtd_dev *dev = link->priv;

    pr_debug("link = 0x%p\n", link);

    if (link->resource[2]->end) {
        if(dev->win_base) {
            iounmap(dev->win_base);
            dev->win_base = NULL;
        }
    }
    pcmcia_disable_device(link);
}


static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
                tuple_t *tuple,
                void *priv_data)
{
    cisparse_t parse;

    if (!pcmcia_parse_tuple(tuple, &parse)) {
        cistpl_format_t *t = &parse.format;
        (void)t; /* Shut up, gcc */
        pr_debug("Format type: %u, Error Detection: %u, offset = %u, length =%u\n",
            t->type, t->edc, t->offset, t->length);
    }
    return -ENOSPC;
}

static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
                tuple_t *tuple,
                void *priv_data)
{
    cisparse_t parse;
    int i;

    if (!pcmcia_parse_tuple(tuple, &parse)) {
        cistpl_jedec_t *t = &parse.jedec;
        for (i = 0; i < t->nid; i++)
            pr_debug("JEDEC: 0x%02x 0x%02x\n",
                  t->id[i].mfr, t->id[i].info);
    }
    return -ENOSPC;
}

static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
                tuple_t *tuple,
                void *priv_data)
{
    struct pcmciamtd_dev *dev = priv_data;
    cisparse_t parse;
    cistpl_device_t *t = &parse.device;
    int i;

    if (pcmcia_parse_tuple(tuple, &parse))
        return -EINVAL;

    pr_debug("Common memory:\n");
    dev->pcmcia_map.size = t->dev[0].size;
    /* from here on: DEBUG only */
    for (i = 0; i < t->ndev; i++) {
        pr_debug("Region %d, type = %u\n", i, t->dev[i].type);
        pr_debug("Region %d, wp = %u\n", i, t->dev[i].wp);
        pr_debug("Region %d, speed = %u ns\n", i, t->dev[i].speed);
        pr_debug("Region %d, size = %u bytes\n", i, t->dev[i].size);
    }
    return 0;
}

static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
                tuple_t *tuple,
                void *priv_data)
{
    struct pcmciamtd_dev *dev = priv_data;
    cisparse_t parse;
    cistpl_device_geo_t *t = &parse.device_geo;
    int i;

    if (pcmcia_parse_tuple(tuple, &parse))
        return -EINVAL;

    dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
    /* from here on: DEBUG only */
    for (i = 0; i < t->ngeo; i++) {
        pr_debug("region: %d bankwidth = %u\n", i, t->geo[i].buswidth);
        pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block);
        pr_debug("region: %d read_block = %u\n", i, t->geo[i].read_block);
        pr_debug("region: %d write_block = %u\n", i, t->geo[i].write_block);
        pr_debug("region: %d partition = %u\n", i, t->geo[i].partition);
        pr_debug("region: %d interleave = %u\n", i, t->geo[i].interleave);
    }
    return 0;
}


static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
{
    int i;

    if (p_dev->prod_id[0]) {
        dev->mtd_name[0] = '\0';
        for (i = 0; i < 4; i++) {
            if (i)
                strcat(dev->mtd_name, " ");
            if (p_dev->prod_id[i])
                strcat(dev->mtd_name, p_dev->prod_id[i]);
        }
        pr_debug("Found name: %s\n", dev->mtd_name);
    }

    pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
    pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
    pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
    pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);

    if(!dev->pcmcia_map.size)
        dev->pcmcia_map.size = MAX_PCMCIA_ADDR;

    if(!dev->pcmcia_map.bankwidth)
        dev->pcmcia_map.bankwidth = 2;

    if(force_size) {
        dev->pcmcia_map.size = force_size << 20;
        pr_debug("size forced to %dM\n", force_size);
    }

    if(bankwidth) {
        dev->pcmcia_map.bankwidth = bankwidth;
        pr_debug("bankwidth forced to %d\n", bankwidth);
    }

    dev->pcmcia_map.name = dev->mtd_name;
    if(!dev->mtd_name[0]) {
        strcpy(dev->mtd_name, "PCMCIA Memory card");
        *new_name = 1;
    }

    pr_debug("Device: Size: %lu Width:%d Name: %s\n",
          dev->pcmcia_map.size,
          dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
}


static int pcmciamtd_config(struct pcmcia_device *link)
{
    struct pcmciamtd_dev *dev = link->priv;
    struct mtd_info *mtd = NULL;
    int ret;
    int i, j = 0;
    static char *probes[] = { "jedec_probe", "cfi_probe" };
    int new_name = 0;

    pr_debug("link=0x%p\n", link);

    card_settings(dev, link, &new_name);

    dev->pcmcia_map.phys = NO_XIP;
    dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
    dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
    if (dev->pcmcia_map.bankwidth == 1) {
        dev->pcmcia_map.read = pcmcia_read8_remap;
        dev->pcmcia_map.write = pcmcia_write8_remap;
    } else {
        dev->pcmcia_map.read = pcmcia_read16_remap;
        dev->pcmcia_map.write = pcmcia_write16_remap;
    }
    if(setvpp == 1)
        dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;

    /* Request a memory window for PCMCIA. Some architeures can map windows
     * up to the maximum that PCMCIA can support (64MiB) - this is ideal and
     * we aim for a window the size of the whole card - otherwise we try
     * smaller windows until we succeed
     */

    link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
    link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
                    WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
    link->resource[2]->start = 0;
    link->resource[2]->end = (force_size) ? force_size << 20 :
                    MAX_PCMCIA_ADDR;
    dev->win_size = 0;

    do {
        int ret;
        pr_debug("requesting window with size = %luKiB memspeed = %d\n",
            (unsigned long) resource_size(link->resource[2]) >> 10,
            mem_speed);
        ret = pcmcia_request_window(link, link->resource[2], mem_speed);
        pr_debug("ret = %d dev->win_size = %d\n", ret, dev->win_size);
        if(ret) {
            j++;
            link->resource[2]->start = 0;
            link->resource[2]->end = (force_size) ?
                    force_size << 20 : MAX_PCMCIA_ADDR;
            link->resource[2]->end >>= j;
        } else {
            pr_debug("Got window of size %luKiB\n", (unsigned long)
                resource_size(link->resource[2]) >> 10);
            dev->win_size = resource_size(link->resource[2]);
            break;
        }
    } while (link->resource[2]->end >= 0x1000);

    pr_debug("dev->win_size = %d\n", dev->win_size);

    if(!dev->win_size) {
        dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
        pcmciamtd_release(link);
        return -ENODEV;
    }
    pr_debug("Allocated a window of %dKiB\n", dev->win_size >> 10);

    /* Get write protect status */
    dev->win_base = ioremap(link->resource[2]->start,
                resource_size(link->resource[2]));
    if(!dev->win_base) {
        dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
            link->resource[2]);
        pcmciamtd_release(link);
        return -ENODEV;
    }
    pr_debug("mapped window dev = %p @ %pR, base = %p\n",
          dev, link->resource[2], dev->win_base);

    dev->offset = 0;
    dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
    dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];

    dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
    if(setvpp == 2) {
        link->vpp = dev->vpp;
    } else {
        link->vpp = 0;
    }

    link->config_index = 0;
    pr_debug("Setting Configuration\n");
    ret = pcmcia_enable_device(link);
    if (ret != 0) {
        if (dev->win_base) {
            iounmap(dev->win_base);
            dev->win_base = NULL;
        }
        return -ENODEV;
    }

    if(mem_type == 1) {
        mtd = do_map_probe("map_ram", &dev->pcmcia_map);
    } else if(mem_type == 2) {
        mtd = do_map_probe("map_rom", &dev->pcmcia_map);
    } else {
        for(i = 0; i < ARRAY_SIZE(probes); i++) {
            pr_debug("Trying %s\n", probes[i]);
            mtd = do_map_probe(probes[i], &dev->pcmcia_map);
            if(mtd)
                break;

            pr_debug("FAILED: %s\n", probes[i]);
        }
    }

    if(!mtd) {
        pr_debug("Can not find an MTD\n");
        pcmciamtd_release(link);
        return -ENODEV;
    }

    dev->mtd_info = mtd;
    mtd->owner = THIS_MODULE;

    if(new_name) {
        int size = 0;
        char unit = ' ';
        /* Since we are using a default name, make it better by adding
         * in the size
         */
        if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
            size = mtd->size >> 10;
            unit = 'K';
        } else {
            size = mtd->size >> 20;
            unit = 'M';
        }
        snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
    }

    /* If the memory found is fits completely into the mapped PCMCIA window,
       use the faster non-remapping read/write functions */
    if(mtd->size <= dev->win_size) {
        pr_debug("Using non remapping memory functions\n");
        dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
        if (dev->pcmcia_map.bankwidth == 1) {
            dev->pcmcia_map.read = pcmcia_read8;
            dev->pcmcia_map.write = pcmcia_write8;
        } else {
            dev->pcmcia_map.read = pcmcia_read16;
            dev->pcmcia_map.write = pcmcia_write16;
        }
        dev->pcmcia_map.copy_from = pcmcia_copy_from;
        dev->pcmcia_map.copy_to = pcmcia_copy_to;
    }

    if (mtd_device_register(mtd, NULL, 0)) {
        map_destroy(mtd);
        dev->mtd_info = NULL;
        dev_err(&dev->p_dev->dev,
            "Could not register the MTD device\n");
        pcmciamtd_release(link);
        return -ENODEV;
    }
    dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
    return 0;
}


static int pcmciamtd_suspend(struct pcmcia_device *dev)
{
    pr_debug("EVENT_PM_RESUME\n");

    /* get_lock(link); */

    return 0;
}

static int pcmciamtd_resume(struct pcmcia_device *dev)
{
    pr_debug("EVENT_PM_SUSPEND\n");

    /* free_lock(link); */

    return 0;
}


static void pcmciamtd_detach(struct pcmcia_device *link)
{
    struct pcmciamtd_dev *dev = link->priv;

    pr_debug("link=0x%p\n", link);

    if(dev->mtd_info) {
        mtd_device_unregister(dev->mtd_info);
        dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
             dev->mtd_info->index);
        map_destroy(dev->mtd_info);
    }

    pcmciamtd_release(link);
}


static int pcmciamtd_probe(struct pcmcia_device *link)
{
    struct pcmciamtd_dev *dev;

    /* Create new memory card device */
    dev = kzalloc(sizeof(*dev), GFP_KERNEL);
    if (!dev) return -ENOMEM;
    pr_debug("dev=0x%p\n", dev);

    dev->p_dev = link;
    link->priv = dev;

    return pcmciamtd_config(link);
}

static const struct pcmcia_device_id pcmciamtd_ids[] = {
    PCMCIA_DEVICE_FUNC_ID(1),
    PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
    PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
    PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
    PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
    PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
    PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
    PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
    PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
    PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
    PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
    PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
    PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
    PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
    PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
    PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
    PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
    PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
    PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
    PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
    /* the following was commented out in pcmcia-cs-3.2.7 */
    /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
#ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
    { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
#endif
    PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);

static struct pcmcia_driver pcmciamtd_driver = {
    .name       = "pcmciamtd",
    .probe      = pcmciamtd_probe,
    .remove     = pcmciamtd_detach,
    .owner      = THIS_MODULE,
    .id_table   = pcmciamtd_ids,
    .suspend    = pcmciamtd_suspend,
    .resume     = pcmciamtd_resume,
};


static int __init init_pcmciamtd(void)
{
    if(bankwidth && bankwidth != 1 && bankwidth != 2) {
        info("bad bankwidth (%d), using default", bankwidth);
        bankwidth = 2;
    }
    if(force_size && (force_size < 1 || force_size > 64)) {
        info("bad force_size (%d), using default", force_size);
        force_size = 0;
    }
    if(mem_type && mem_type != 1 && mem_type != 2) {
        info("bad mem_type (%d), using default", mem_type);
        mem_type = 0;
    }
    return pcmcia_register_driver(&pcmciamtd_driver);
}


static void __exit exit_pcmciamtd(void)
{
    pr_debug(DRIVER_DESC " unloading");
    pcmcia_unregister_driver(&pcmciamtd_driver);
}

module_init(init_pcmciamtd);
module_exit(exit_pcmciamtd);