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linux/drivers/mtd/maps/pcmciamtd.c

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/*
* $Id: pcmciamtd.c,v 1.51 2004/07/12 22:38:29 dwmw2 Exp $
*
* 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_PARM(debug, "i");
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", __FUNCTION__ , ## 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"
#define DRIVER_VERSION "$Revision: 1.51 $"
/* Size of the PCMCIA address space: 26 bits = 64 MB */
#define MAX_PCMCIA_ADDR 0x4000000
struct pcmciamtd_dev {
dev_link_t link; /* PCMCIA link */
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)];
};
static dev_info_t dev_info = "pcmciamtd";
static dev_link_t *dev_list;
/* 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_PARM(bankwidth, "i");
MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
MODULE_PARM(mem_speed, "i");
MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
MODULE_PARM(force_size, "i");
MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
MODULE_PARM(setvpp, "i");
MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
MODULE_PARM(vpp, "i");
MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
MODULE_PARM(mem_type, "i");
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(!(dev->link.state & DEV_PRESENT)) {
DEBUG(1, "device removed state = 0x%4.4X", dev->link.state);
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;
if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) {
cs_error(dev->link.handle, 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) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT))
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;
dev_link_t *link = &dev->link;
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->handle, &mod);
if(ret != CS_SUCCESS) {
cs_error(link->handle, 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(dev_link_t *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_release_configuration(link->handle);
link->state &= ~DEV_CONFIG;
}
static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *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->handle, &tuple);
while(rc == CS_SUCCESS) {
rc = pcmcia_get_tuple_data(link->handle, &tuple);
if(rc != CS_SUCCESS) {
cs_error(link->handle, GetTupleData, rc);
break;
}
rc = pcmcia_parse_tuple(link->handle, &tuple, &parse);
if(rc != CS_SUCCESS) {
cs_error(link->handle, 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->handle, &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 void pcmciamtd_config(dev_link_t *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;
config_info_t t;
static char *probes[] = { "jedec_probe", "cfi_probe" };
cisinfo_t cisinfo;
int new_name = 0;
DEBUG(3, "link=0x%p", link);
/* Configure card */
link->state |= DEV_CONFIG;
DEBUG(2, "Validating CIS");
ret = pcmcia_validate_cis(link->handle, &cisinfo);
if(ret != CS_SUCCESS) {
cs_error(link->handle, GetTupleData, ret);
} else {
DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains);
}
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->handle;
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->handle, &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;
}
DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
/* Get write protect status */
CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status));
DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx",
status.CardState, (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;
}
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;
DEBUG(2, "Getting configuration");
CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t));
DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2);
dev->vpp = (vpp) ? vpp : t.Vpp1;
link->conf.Attributes = 0;
link->conf.Vcc = t.Vcc;
if(setvpp == 2) {
link->conf.Vpp1 = dev->vpp;
link->conf.Vpp2 = dev->vpp;
} else {
link->conf.Vpp1 = 0;
link->conf.Vpp2 = 0;
}
link->conf.IntType = INT_MEMORY;
link->conf.ConfigBase = t.ConfigBase;
link->conf.Status = t.Status;
link->conf.Pin = t.Pin;
link->conf.Copy = t.Copy;
link->conf.ExtStatus = t.ExtStatus;
link->conf.ConfigIndex = 0;
link->conf.Present = t.Present;
DEBUG(2, "Setting Configuration");
ret = pcmcia_request_configuration(link->handle, &link->conf);
if(ret != CS_SUCCESS) {
cs_error(link->handle, RequestConfiguration, ret);
}
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 < sizeof(probes) / sizeof(char *); 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;
}
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_1 = (unsigned long)&(dev->link.state);
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;
}
snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
info("mtd%d: %s", mtd->index, mtd->name);
link->state &= ~DEV_CONFIG_PENDING;
link->dev = &dev->node;
return;
cs_failed:
cs_error(link->handle, last_fn, last_ret);
err("CS Error, exiting");
pcmciamtd_release(link);
return;
}
/* The card status event handler. Mostly, this schedules other
* stuff to run after an event is received. A CARD_REMOVAL event
* also sets some flags to discourage the driver from trying
* to talk to the card any more.
*/
static int pcmciamtd_event(event_t event, int priority,
event_callback_args_t *args)
{
dev_link_t *link = args->client_data;
DEBUG(1, "event=0x%06x", event);
switch (event) {
case CS_EVENT_CARD_REMOVAL:
DEBUG(2, "EVENT_CARD_REMOVAL");
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG) {
struct pcmciamtd_dev *dev = link->priv;
if(dev->mtd_info) {
del_mtd_device(dev->mtd_info);
info("mtd%d: Removed", dev->mtd_info->index);
}
pcmciamtd_release(link);
}
break;
case CS_EVENT_CARD_INSERTION:
DEBUG(2, "EVENT_CARD_INSERTION");
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
pcmciamtd_config(link);
break;
case CS_EVENT_PM_SUSPEND:
DEBUG(2, "EVENT_PM_SUSPEND");
link->state |= DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
DEBUG(2, "EVENT_RESET_PHYSICAL");
/* get_lock(link); */
break;
case CS_EVENT_PM_RESUME:
DEBUG(2, "EVENT_PM_RESUME");
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
DEBUG(2, "EVENT_CARD_RESET");
/* free_lock(link); */
break;
default:
DEBUG(2, "Unknown event %d", event);
}
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(dev_link_t *link)
{
DEBUG(3, "link=0x%p", link);
if(link->state & DEV_CONFIG) {
pcmciamtd_release(link);
}
if (link->handle) {
int ret;
DEBUG(2, "Deregistering with card services");
ret = pcmcia_deregister_client(link->handle);
if (ret != CS_SUCCESS)
cs_error(link->handle, DeregisterClient, ret);
}
link->state |= DEV_STALE_LINK;
}
/* pcmciamtd_attach() creates an "instance" of the driver, allocating
* local data structures for one device. The device is registered
* with Card Services.
*/
static dev_link_t *pcmciamtd_attach(void)
{
struct pcmciamtd_dev *dev;
dev_link_t *link;
client_reg_t client_reg;
int ret;
/* Create new memory card device */
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) return NULL;
DEBUG(1, "dev=0x%p", dev);
memset(dev, 0, sizeof(*dev));
link = &dev->link;
link->priv = dev;
link->conf.Attributes = 0;
link->conf.IntType = INT_MEMORY;
link->next = dev_list;
dev_list = link;
/* Register with Card Services */
client_reg.dev_info = &dev_info;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
DEBUG(2, "Calling RegisterClient");
ret = pcmcia_register_client(&link->handle, &client_reg);
if (ret != 0) {
cs_error(link->handle, RegisterClient, ret);
pcmciamtd_detach(link);
return NULL;
}
DEBUG(2, "link = %p", link);
return 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"
},
.attach = pcmciamtd_attach,
.event = pcmciamtd_event,
.detach = pcmciamtd_detach,
.owner = THIS_MODULE,
.id_table = pcmciamtd_ids,
};
static int __init init_pcmciamtd(void)
{
info(DRIVER_DESC " " DRIVER_VERSION);
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);
BUG_ON(dev_list != NULL);
}
module_init(init_pcmciamtd);
module_exit(exit_pcmciamtd);
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