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path: root/drivers/mtd/maps/pcmciamtd.c
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Diffstat (limited to 'drivers/mtd/maps/pcmciamtd.c')
-rw-r--r--drivers/mtd/maps/pcmciamtd.c860
1 files changed, 860 insertions, 0 deletions
diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c
new file mode 100644
index 000000000000..e37b4c1976e5
--- /dev/null
+++ b/drivers/mtd/maps/pcmciamtd.c
@@ -0,0 +1,860 @@
+/*
+ * $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/version.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.EventMask =
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &pcmciamtd_event;
+ 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_driver pcmciamtd_driver = {
+ .drv = {
+ .name = "pcmciamtd"
+ },
+ .attach = pcmciamtd_attach,
+ .detach = pcmciamtd_detach,
+ .owner = THIS_MODULE
+};
+
+
+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);