drivers/mtd/maps/pcmciamtd.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * 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 <asm/system.h>

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

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

 #ifdef CONFIG_MTD_DEBUG
 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
 #undef DEBUG
 #define DEBUG(n, format, arg...) \
 	if (n <= debug) {	 \
 		printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
 	}

 #else
 #undef DEBUG
 #define DEBUG(n, arg...)
 static const int debug = 0;
 #endif

 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "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;
 	dev_node_t	node;		/* device node */
 	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 <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 caddr_t remap_window(struct map_info *map, unsigned long to)
 {
 	struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 	window_handle_t win = (window_handle_t)map->map_priv_2;
 	memreq_t mrq;
 	int ret;

 	if (!pcmcia_dev_present(dev->p_dev)) {
 		DEBUG(1, "device removed");
 		return 0;
 	}

 	mrq.CardOffset = to & ~(dev->win_size-1);
 	if(mrq.CardOffset != dev->offset) {
 		DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 		      dev->offset, mrq.CardOffset);
 		mrq.Page = 0;
 		ret = pcmcia_map_mem_page(win, &mrq);
 		if (ret != 0) {
 			cs_error(dev->p_dev, MapMemPage, ret);
 			return NULL;
 		}
 		dev->offset = mrq.CardOffset;
 	}
 	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);
 	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", 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);
 	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", 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;

 	DEBUG(3, "to = %p from = %lu len = %u", 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;

 		DEBUG(4, "memcpy from %p to %p len = %d", 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;

 	DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", 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;

 	DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", 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;

 	DEBUG(3, "to = %lu from = %p len = %u", 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;

 		DEBUG(4, "memcpy from %p to %p len = %d", 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);
 	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", 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);
 	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", 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;

 	DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 	memcpy_fromio(to, win_base + from, len);
 }


 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
 {
 	caddr_t win_base = (caddr_t)map->map_priv_2;

 	if(DEV_REMOVED(map))
 		return;

 	DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, win_base + adr, d);
 	writeb(d, win_base + adr);
 }


 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
 {
 	caddr_t win_base = (caddr_t)map->map_priv_2;

 	if(DEV_REMOVED(map))
 		return;

 	DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, win_base + adr, d);
 	writew(d, 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;

 	DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 	memcpy_toio(win_base + to, from, len);
 }


 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;
 	modconf_t mod;
 	int ret;

 	mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
 	mod.Vcc = 0;
 	mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;

 	DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 	ret = pcmcia_modify_configuration(link, &mod);
 	if (ret != 0)
 		cs_error(link, ModifyConfiguration, ret);
 }


 /* After a card is removed, pcmciamtd_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 pcmciamtd_release(struct pcmcia_device *link)
 {
 	struct pcmciamtd_dev *dev = link->priv;

 	DEBUG(3, "link = 0x%p", link);

 	if (link->win) {
 		if(dev->win_base) {
 			iounmap(dev->win_base);
 			dev->win_base = NULL;
 		}
 		pcmcia_release_window(link->win);
 	}
 	pcmcia_disable_device(link);
 }


 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *link, int *new_name)
 {
 	int rc;
 	tuple_t tuple;
 	cisparse_t parse;
 	u_char buf[64];

 	tuple.Attributes = 0;
 	tuple.TupleData = (cisdata_t *)buf;
 	tuple.TupleDataMax = sizeof(buf);
 	tuple.TupleOffset = 0;
 	tuple.DesiredTuple = RETURN_FIRST_TUPLE;

 	rc = pcmcia_get_first_tuple(link, &tuple);
 	while (rc == 0) {
 		rc = pcmcia_get_tuple_data(link, &tuple);
 		if (rc != 0) {
 			cs_error(link, GetTupleData, rc);
 			break;
 		}
 		rc = pcmcia_parse_tuple(link, &tuple, &parse);
 		if (rc != 0) {
 			cs_error(link, ParseTuple, rc);
 			break;
 		}

 		switch(tuple.TupleCode) {
 		case  CISTPL_FORMAT: {
 			cistpl_format_t *t = &parse.format;
 			(void)t; /* Shut up, gcc */
 			DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 			      t->type, t->edc, t->offset, t->length);
 			break;

 		}

 		case CISTPL_DEVICE: {
 			cistpl_device_t *t = &parse.device;
 			int i;
 			DEBUG(2, "Common memory:");
 			dev->pcmcia_map.size = t->dev[0].size;
 			for(i = 0; i < t->ndev; i++) {
 				DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 				DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 				DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 				DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 			}
 			break;
 		}

 		case CISTPL_VERS_1: {
 			cistpl_vers_1_t *t = &parse.version_1;
 			int i;
 			if(t->ns) {
 				dev->mtd_name[0] = '\0';
 				for(i = 0; i < t->ns; i++) {
 					if(i)
 						strcat(dev->mtd_name, " ");
 					strcat(dev->mtd_name, t->str+t->ofs[i]);
 				}
 			}
 			DEBUG(2, "Found name: %s", dev->mtd_name);
 			break;
 		}

 		case CISTPL_JEDEC_C: {
 			cistpl_jedec_t *t = &parse.jedec;
 			int i;
 			for(i = 0; i < t->nid; i++) {
 				DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
 			}
 			break;
 		}

 		case CISTPL_DEVICE_GEO: {
 			cistpl_device_geo_t *t = &parse.device_geo;
 			int i;
 			dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 			for(i = 0; i < t->ngeo; i++) {
 				DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 				DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 				DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 				DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 				DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 				DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 			}
 			break;
 		}

 		default:
 			DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
 		}

 		rc = pcmcia_get_next_tuple(link, &tuple);
 	}
 	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;
 		DEBUG(2, "size forced to %dM", force_size);
 	}

 	if(bankwidth) {
 		dev->pcmcia_map.bankwidth = bankwidth;
 		DEBUG(2, "bankwidth forced to %d", bankwidth);
 	}

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

 	DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 	      dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 }


 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
  * is received, to configure the PCMCIA socket, and to make the
  * MTD device available to the system.
  */

 #define CS_CHECK(fn, ret) \
 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

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

 	DEBUG(3, "link=0x%p", link);

 	DEBUG(2, "Validating CIS");
 	ret = pcmcia_validate_cis(link, NULL);
 	if (ret != 0)
 		cs_error(link, GetTupleData, ret);

 	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 upto 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 */

 	req.Attributes =  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 	req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 	req.Base = 0;
 	req.AccessSpeed = mem_speed;
 	link->win = (window_handle_t)link;
 	req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
 	dev->win_size = 0;

 	do {
 		int ret;
 		DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
 		      req.Size >> 10, req.AccessSpeed);
 		ret = pcmcia_request_window(&link, &req, &link->win);
 		DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 		if(ret) {
 			req.Size >>= 1;
 		} else {
 			DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
 			dev->win_size = req.Size;
 			break;
 		}
 	} while(req.Size >= 0x1000);

 	DEBUG(2, "dev->win_size = %d", dev->win_size);

 	if(!dev->win_size) {
 		err("Cant allocate memory window");
 		pcmciamtd_release(link);
 		return -ENODEV;
 	}
 	DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);

 	/* Get write protect status */
 	DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win);
 	dev->win_base = ioremap(req.Base, req.Size);
 	if(!dev->win_base) {
 		err("ioremap(%lu, %u) failed", req.Base, req.Size);
 		pcmciamtd_release(link);
 		return -ENODEV;
 	}
 	DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
 	      dev, req.Base, dev->win_base, req.Size);

 	dev->offset = 0;
 	dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 	dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;

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

 	link->conf.IntType = INT_MEMORY;
 	link->conf.ConfigIndex = 0;
 	DEBUG(2, "Setting Configuration");
 	ret = pcmcia_request_configuration(link, &link->conf);
 	if (ret != 0) {
 		cs_error(link, RequestConfiguration, ret);
 		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++) {
 			DEBUG(1, "Trying %s", probes[i]);
 			mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 			if(mtd)
 				break;

 			DEBUG(1, "FAILED: %s", probes[i]);
 		}
 	}

 	if(!mtd) {
 		DEBUG(1, "Cant find an MTD");
 		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) {
 		DEBUG(1, "Using non remapping memory functions");
 		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(add_mtd_device(mtd)) {
 		map_destroy(mtd);
 		dev->mtd_info = NULL;
 		err("Couldnt register MTD device");
 		pcmciamtd_release(link);
 		return -ENODEV;
 	}
 	snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
 	info("mtd%d: %s", mtd->index, mtd->name);
 	link->dev_node = &dev->node;
 	return 0;

  cs_failed:
 	cs_error(link, last_fn, last_ret);
 	err("CS Error, exiting");
 	pcmciamtd_release(link);
 	return -ENODEV;
 }


 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 {
 	DEBUG(2, "EVENT_PM_RESUME");

 	/* get_lock(link); */

 	return 0;
 }

 static int pcmciamtd_resume(struct pcmcia_device *dev)
 {
 	DEBUG(2, "EVENT_PM_SUSPEND");

 	/* free_lock(link); */

 	return 0;
 }


 /* This deletes a driver "instance".  The device is de-registered
  * with Card Services.  If it has been released, all local data
  * structures are freed.  Otherwise, the structures will be freed
  * when the device is released.
  */

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

 	DEBUG(3, "link=0x%p", link);

 	if(dev->mtd_info) {
 		del_mtd_device(dev->mtd_info);
 		map_destroy(dev->mtd_info);
 		info("mtd%d: Removed", dev->mtd_info->index);
 	}

 	pcmciamtd_release(link);
 }


 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
  * local data structures for one device.  The device is registered
  * with Card Services.
  */

 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;
 	DEBUG(1, "dev=0x%p", dev);

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

 	link->conf.Attributes = 0;
 	link->conf.IntType = INT_MEMORY;

 	return pcmciamtd_config(link);
 }

 static 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_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 	PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 	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 = {
 	.drv		= {
 		.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)
 {
 	info(DRIVER_DESC);

 	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)
 {
 	DEBUG(1, DRIVER_DESC " unloading");
 	pcmcia_unregister_driver(&pcmciamtd_driver);
 }

 module_init(init_pcmciamtd);
 module_exit(exit_pcmciamtd);
	/*
	* 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 <asm/system.h>

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

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

	#ifdef CONFIG_MTD_DEBUG
	static int debug = CONFIG_MTD_DEBUG_VERBOSE;
	module_param(debug, int, 0);
	MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
	#undef DEBUG
	#define DEBUG(n, format, arg...) \
	if (n <= debug) { \
	printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
	}

	#else
	#undef DEBUG
	#define DEBUG(n, arg...)
	static const int debug = 0;
	#endif

	#define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
	#define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
	#define warn(format, arg...) printk(KERN_WARNING "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;
	dev_node_t node; /* device node */
	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 <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 caddr_t remap_window(struct map_info *map, unsigned long to)
	{
	struct pcmciamtd_dev dev = (struct pcmciamtd_dev )map->map_priv_1;
	window_handle_t win = (window_handle_t)map->map_priv_2;
	memreq_t mrq;
	int ret;

	if (!pcmcia_dev_present(dev->p_dev)) {
	DEBUG(1, "device removed");
	return 0;
	}

	mrq.CardOffset = to & ~(dev->win_size-1);
	if(mrq.CardOffset != dev->offset) {
	DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
	dev->offset, mrq.CardOffset);
	mrq.Page = 0;
	ret = pcmcia_map_mem_page(win, &mrq);
	if (ret != 0) {
	cs_error(dev->p_dev, MapMemPage, ret);
	return NULL;
	}
	dev->offset = mrq.CardOffset;
	}
	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);
	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", 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);
	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", 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;

	DEBUG(3, "to = %p from = %lu len = %u", 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;

	DEBUG(4, "memcpy from %p to %p len = %d", 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;

	DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", 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;

	DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", 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;

	DEBUG(3, "to = %lu from = %p len = %u", 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;

	DEBUG(4, "memcpy from %p to %p len = %d", 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);
	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", 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);
	DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", 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;

	DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
	memcpy_fromio(to, win_base + from, len);
	}


	static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
	{
	caddr_t win_base = (caddr_t)map->map_priv_2;

	if(DEV_REMOVED(map))
	return;

	DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d);
	writeb(d, win_base + adr);
	}


	static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
	{
	caddr_t win_base = (caddr_t)map->map_priv_2;

	if(DEV_REMOVED(map))
	return;

	DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d);
	writew(d, 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;

	DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
	memcpy_toio(win_base + to, from, len);
	}


	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;
	modconf_t mod;
	int ret;

	mod.Attributes = CONF_VPP1_CHANGE_VALID \| CONF_VPP2_CHANGE_VALID;
	mod.Vcc = 0;
	mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;

	DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
	ret = pcmcia_modify_configuration(link, &mod);
	if (ret != 0)
	cs_error(link, ModifyConfiguration, ret);
	}


	/* After a card is removed, pcmciamtd_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 pcmciamtd_release(struct pcmcia_device *link)
	{
	struct pcmciamtd_dev *dev = link->priv;

	DEBUG(3, "link = 0x%p", link);

	if (link->win) {
	if(dev->win_base) {
	iounmap(dev->win_base);
	dev->win_base = NULL;
	}
	pcmcia_release_window(link->win);
	}
	pcmcia_disable_device(link);
	}


	static void card_settings(struct pcmciamtd_dev dev, struct pcmcia_device link, int *new_name)
	{
	int rc;
	tuple_t tuple;
	cisparse_t parse;
	u_char buf[64];

	tuple.Attributes = 0;
	tuple.TupleData = (cisdata_t *)buf;
	tuple.TupleDataMax = sizeof(buf);
	tuple.TupleOffset = 0;
	tuple.DesiredTuple = RETURN_FIRST_TUPLE;

	rc = pcmcia_get_first_tuple(link, &tuple);
	while (rc == 0) {
	rc = pcmcia_get_tuple_data(link, &tuple);
	if (rc != 0) {
	cs_error(link, GetTupleData, rc);
	break;
	}
	rc = pcmcia_parse_tuple(link, &tuple, &parse);
	if (rc != 0) {
	cs_error(link, ParseTuple, rc);
	break;
	}

	switch(tuple.TupleCode) {
	case CISTPL_FORMAT: {
	cistpl_format_t *t = &parse.format;
	(void)t; /* Shut up, gcc */
	DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
	t->type, t->edc, t->offset, t->length);
	break;

	}

	case CISTPL_DEVICE: {
	cistpl_device_t *t = &parse.device;
	int i;
	DEBUG(2, "Common memory:");
	dev->pcmcia_map.size = t->dev[0].size;
	for(i = 0; i < t->ndev; i++) {
	DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
	DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
	DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
	DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
	}
	break;
	}

	case CISTPL_VERS_1: {
	cistpl_vers_1_t *t = &parse.version_1;
	int i;
	if(t->ns) {
	dev->mtd_name[0] = '\0';
	for(i = 0; i < t->ns; i++) {
	if(i)
	strcat(dev->mtd_name, " ");
	strcat(dev->mtd_name, t->str+t->ofs[i]);
	}
	}
	DEBUG(2, "Found name: %s", dev->mtd_name);
	break;
	}

	case CISTPL_JEDEC_C: {
	cistpl_jedec_t *t = &parse.jedec;
	int i;
	for(i = 0; i < t->nid; i++) {
	DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
	}
	break;
	}

	case CISTPL_DEVICE_GEO: {
	cistpl_device_geo_t *t = &parse.device_geo;
	int i;
	dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
	for(i = 0; i < t->ngeo; i++) {
	DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
	DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
	DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
	DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
	DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
	DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
	}
	break;
	}

	default:
	DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
	}

	rc = pcmcia_get_next_tuple(link, &tuple);
	}
	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;
	DEBUG(2, "size forced to %dM", force_size);
	}

	if(bankwidth) {
	dev->pcmcia_map.bankwidth = bankwidth;
	DEBUG(2, "bankwidth forced to %d", bankwidth);
	}

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

	DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
	dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
	}


	/* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
	* is received, to configure the PCMCIA socket, and to make the
	* MTD device available to the system.
	*/

	#define CS_CHECK(fn, ret) \
	do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

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

	DEBUG(3, "link=0x%p", link);

	DEBUG(2, "Validating CIS");
	ret = pcmcia_validate_cis(link, NULL);
	if (ret != 0)
	cs_error(link, GetTupleData, ret);

	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 upto 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 */

	req.Attributes = WIN_MEMORY_TYPE_CM \| WIN_ENABLE;
	req.Attributes \|= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
	req.Base = 0;
	req.AccessSpeed = mem_speed;
	link->win = (window_handle_t)link;
	req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
	dev->win_size = 0;

	do {
	int ret;
	DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
	req.Size >> 10, req.AccessSpeed);
	ret = pcmcia_request_window(&link, &req, &link->win);
	DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
	if(ret) {
	req.Size >>= 1;
	} else {
	DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
	dev->win_size = req.Size;
	break;
	}
	} while(req.Size >= 0x1000);

	DEBUG(2, "dev->win_size = %d", dev->win_size);

	if(!dev->win_size) {
	err("Cant allocate memory window");
	pcmciamtd_release(link);
	return -ENODEV;
	}
	DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);

	/* Get write protect status */
	DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win);
	dev->win_base = ioremap(req.Base, req.Size);
	if(!dev->win_base) {
	err("ioremap(%lu, %u) failed", req.Base, req.Size);
	pcmciamtd_release(link);
	return -ENODEV;
	}
	DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
	dev, req.Base, dev->win_base, req.Size);

	dev->offset = 0;
	dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
	dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;

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

	link->conf.IntType = INT_MEMORY;
	link->conf.ConfigIndex = 0;
	DEBUG(2, "Setting Configuration");
	ret = pcmcia_request_configuration(link, &link->conf);
	if (ret != 0) {
	cs_error(link, RequestConfiguration, ret);
	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++) {
	DEBUG(1, "Trying %s", probes[i]);
	mtd = do_map_probe(probes[i], &dev->pcmcia_map);
	if(mtd)
	break;

	DEBUG(1, "FAILED: %s", probes[i]);
	}
	}

	if(!mtd) {
	DEBUG(1, "Cant find an MTD");
	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) {
	DEBUG(1, "Using non remapping memory functions");
	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(add_mtd_device(mtd)) {
	map_destroy(mtd);
	dev->mtd_info = NULL;
	err("Couldnt register MTD device");
	pcmciamtd_release(link);
	return -ENODEV;
	}
	snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
	info("mtd%d: %s", mtd->index, mtd->name);
	link->dev_node = &dev->node;
	return 0;

	cs_failed:
	cs_error(link, last_fn, last_ret);
	err("CS Error, exiting");
	pcmciamtd_release(link);
	return -ENODEV;
	}


	static int pcmciamtd_suspend(struct pcmcia_device *dev)
	{
	DEBUG(2, "EVENT_PM_RESUME");

	/* get_lock(link); */

	return 0;
	}

	static int pcmciamtd_resume(struct pcmcia_device *dev)
	{
	DEBUG(2, "EVENT_PM_SUSPEND");

	/* free_lock(link); */

	return 0;
	}


	/* This deletes a driver "instance". The device is de-registered
	* with Card Services. If it has been released, all local data
	* structures are freed. Otherwise, the structures will be freed
	* when the device is released.
	*/

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

	DEBUG(3, "link=0x%p", link);

	if(dev->mtd_info) {
	del_mtd_device(dev->mtd_info);
	map_destroy(dev->mtd_info);
	info("mtd%d: Removed", dev->mtd_info->index);
	}

	pcmciamtd_release(link);
	}


	/* pcmciamtd_attach() creates an "instance" of the driver, allocating
	* local data structures for one device. The device is registered
	* with Card Services.
	*/

	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;
	DEBUG(1, "dev=0x%p", dev);

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

	link->conf.Attributes = 0;
	link->conf.IntType = INT_MEMORY;

	return pcmciamtd_config(link);
	}

	static 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_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
	PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
	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 = {
	.drv = {
	.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)
	{
	info(DRIVER_DESC);

	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)
	{
	DEBUG(1, DRIVER_DESC " unloading");
	pcmcia_unregister_driver(&pcmciamtd_driver);
	}

	module_init(init_pcmciamtd);
	module_exit(exit_pcmciamtd);