/*
 * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
 *
 * Author: Simon Evans <spse@secret.org.uk>
 *
 * 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;
        void __iomem    *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 <spse@secret.org.uk>");
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 void __iomem *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 NULL;
        }

        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)
{
        void __iomem *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)
{
        void __iomem *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));
                void __iomem *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)
{
        void __iomem *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)
{
        void __iomem *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));
                void __iomem *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)
{
        void __iomem *win_base = (void __iomem *)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)
{
        void __iomem *win_base = (void __iomem *)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)
{
        void __iomem *win_base = (void __iomem *)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)
{
        void __iomem *win_base = (void __iomem *)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)
{
        void __iomem *win_base = (void __iomem *)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)
{
        void __iomem *win_base = (void __iomem *)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_MUTEX(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;

        pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
        mutex_lock(&pcmcia_vpp_lock);
        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);
        }
        mutex_unlock(&pcmcia_vpp_lock);
}


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);
        kfree(dev);
}


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

        /* Create new memory card device */
        dev = kzalloc_obj(*dev);
        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("PRETEC", "  4MB SRAM CARD", 0xebf91155, 0x20b6bf17),
        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);