Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
new file mode 100644
index 0000000..66150d0
--- /dev/null
+++ b/drivers/pcmcia/ds.c
@@ -0,0 +1,1659 @@
+/*
+ * ds.c -- 16-bit PCMCIA core support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ * (C) 1999 David A. Hinds
+ * (C) 2003 - 2004 Dominik Brodowski
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/fcntl.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/timer.h>
+#include <linux/ioctl.h>
+#include <linux/proc_fs.h>
+#include <linux/poll.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/kref.h>
+#include <linux/workqueue.h>
+
+#include <asm/atomic.h>
+
+#define IN_CARD_SERVICES
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/bulkmem.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/ss.h>
+
+#include "cs_internal.h"
+
+/*====================================================================*/
+
+/* Module parameters */
+
+MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
+MODULE_DESCRIPTION("PCMCIA Driver Services");
+MODULE_LICENSE("GPL");
+
+#ifdef DEBUG
+int ds_pc_debug;
+
+module_param_named(pc_debug, ds_pc_debug, int, 0644);
+
+#define ds_dbg(lvl, fmt, arg...) do { \
+ if (ds_pc_debug > (lvl)) \
+ printk(KERN_DEBUG "ds: " fmt , ## arg); \
+} while (0)
+#else
+#define ds_dbg(lvl, fmt, arg...) do { } while (0)
+#endif
+
+/*====================================================================*/
+
+/* Device user information */
+#define MAX_EVENTS 32
+#define USER_MAGIC 0x7ea4
+#define CHECK_USER(u) \
+ (((u) == NULL) || ((u)->user_magic != USER_MAGIC))
+typedef struct user_info_t {
+ u_int user_magic;
+ int event_head, event_tail;
+ event_t event[MAX_EVENTS];
+ struct user_info_t *next;
+ struct pcmcia_bus_socket *socket;
+} user_info_t;
+
+/* Socket state information */
+struct pcmcia_bus_socket {
+ struct kref refcount;
+ struct pcmcia_callback callback;
+ int state;
+ user_info_t *user;
+ wait_queue_head_t queue;
+ struct pcmcia_socket *parent;
+
+ /* the PCMCIA devices connected to this socket (normally one, more
+ * for multifunction devices: */
+ struct list_head devices_list;
+ u8 device_count; /* the number of devices, used
+ * only internally and subject
+ * to incorrectness and change */
+};
+static spinlock_t pcmcia_dev_list_lock;
+
+#define DS_SOCKET_PRESENT 0x01
+#define DS_SOCKET_BUSY 0x02
+#define DS_SOCKET_REMOVAL_PENDING 0x10
+#define DS_SOCKET_DEAD 0x80
+
+/*====================================================================*/
+
+static int major_dev = -1;
+
+static int unbind_request(struct pcmcia_bus_socket *s);
+
+/*====================================================================*/
+
+/* code which was in cs.c before */
+
+/* String tables for error messages */
+
+typedef struct lookup_t {
+ int key;
+ char *msg;
+} lookup_t;
+
+static const lookup_t error_table[] = {
+ { CS_SUCCESS, "Operation succeeded" },
+ { CS_BAD_ADAPTER, "Bad adapter" },
+ { CS_BAD_ATTRIBUTE, "Bad attribute", },
+ { CS_BAD_BASE, "Bad base address" },
+ { CS_BAD_EDC, "Bad EDC" },
+ { CS_BAD_IRQ, "Bad IRQ" },
+ { CS_BAD_OFFSET, "Bad offset" },
+ { CS_BAD_PAGE, "Bad page number" },
+ { CS_READ_FAILURE, "Read failure" },
+ { CS_BAD_SIZE, "Bad size" },
+ { CS_BAD_SOCKET, "Bad socket" },
+ { CS_BAD_TYPE, "Bad type" },
+ { CS_BAD_VCC, "Bad Vcc" },
+ { CS_BAD_VPP, "Bad Vpp" },
+ { CS_BAD_WINDOW, "Bad window" },
+ { CS_WRITE_FAILURE, "Write failure" },
+ { CS_NO_CARD, "No card present" },
+ { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
+ { CS_UNSUPPORTED_MODE, "Unsupported mode" },
+ { CS_BAD_SPEED, "Bad speed" },
+ { CS_BUSY, "Resource busy" },
+ { CS_GENERAL_FAILURE, "General failure" },
+ { CS_WRITE_PROTECTED, "Write protected" },
+ { CS_BAD_ARG_LENGTH, "Bad argument length" },
+ { CS_BAD_ARGS, "Bad arguments" },
+ { CS_CONFIGURATION_LOCKED, "Configuration locked" },
+ { CS_IN_USE, "Resource in use" },
+ { CS_NO_MORE_ITEMS, "No more items" },
+ { CS_OUT_OF_RESOURCE, "Out of resource" },
+ { CS_BAD_HANDLE, "Bad handle" },
+ { CS_BAD_TUPLE, "Bad CIS tuple" }
+};
+
+
+static const lookup_t service_table[] = {
+ { AccessConfigurationRegister, "AccessConfigurationRegister" },
+ { AddSocketServices, "AddSocketServices" },
+ { AdjustResourceInfo, "AdjustResourceInfo" },
+ { CheckEraseQueue, "CheckEraseQueue" },
+ { CloseMemory, "CloseMemory" },
+ { DeregisterClient, "DeregisterClient" },
+ { DeregisterEraseQueue, "DeregisterEraseQueue" },
+ { GetCardServicesInfo, "GetCardServicesInfo" },
+ { GetClientInfo, "GetClientInfo" },
+ { GetConfigurationInfo, "GetConfigurationInfo" },
+ { GetEventMask, "GetEventMask" },
+ { GetFirstClient, "GetFirstClient" },
+ { GetFirstRegion, "GetFirstRegion" },
+ { GetFirstTuple, "GetFirstTuple" },
+ { GetNextClient, "GetNextClient" },
+ { GetNextRegion, "GetNextRegion" },
+ { GetNextTuple, "GetNextTuple" },
+ { GetStatus, "GetStatus" },
+ { GetTupleData, "GetTupleData" },
+ { MapMemPage, "MapMemPage" },
+ { ModifyConfiguration, "ModifyConfiguration" },
+ { ModifyWindow, "ModifyWindow" },
+ { OpenMemory, "OpenMemory" },
+ { ParseTuple, "ParseTuple" },
+ { ReadMemory, "ReadMemory" },
+ { RegisterClient, "RegisterClient" },
+ { RegisterEraseQueue, "RegisterEraseQueue" },
+ { RegisterMTD, "RegisterMTD" },
+ { ReleaseConfiguration, "ReleaseConfiguration" },
+ { ReleaseIO, "ReleaseIO" },
+ { ReleaseIRQ, "ReleaseIRQ" },
+ { ReleaseWindow, "ReleaseWindow" },
+ { RequestConfiguration, "RequestConfiguration" },
+ { RequestIO, "RequestIO" },
+ { RequestIRQ, "RequestIRQ" },
+ { RequestSocketMask, "RequestSocketMask" },
+ { RequestWindow, "RequestWindow" },
+ { ResetCard, "ResetCard" },
+ { SetEventMask, "SetEventMask" },
+ { ValidateCIS, "ValidateCIS" },
+ { WriteMemory, "WriteMemory" },
+ { BindDevice, "BindDevice" },
+ { BindMTD, "BindMTD" },
+ { ReportError, "ReportError" },
+ { SuspendCard, "SuspendCard" },
+ { ResumeCard, "ResumeCard" },
+ { EjectCard, "EjectCard" },
+ { InsertCard, "InsertCard" },
+ { ReplaceCIS, "ReplaceCIS" }
+};
+
+
+int pcmcia_report_error(client_handle_t handle, error_info_t *err)
+{
+ int i;
+ char *serv;
+
+ if (CHECK_HANDLE(handle))
+ printk(KERN_NOTICE);
+ else {
+ struct pcmcia_device *p_dev = handle_to_pdev(handle);
+ printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(service_table); i++)
+ if (service_table[i].key == err->func)
+ break;
+ if (i < ARRAY_SIZE(service_table))
+ serv = service_table[i].msg;
+ else
+ serv = "Unknown service number";
+
+ for (i = 0; i < ARRAY_SIZE(error_table); i++)
+ if (error_table[i].key == err->retcode)
+ break;
+ if (i < ARRAY_SIZE(error_table))
+ printk("%s: %s\n", serv, error_table[i].msg);
+ else
+ printk("%s: Unknown error code %#x\n", serv, err->retcode);
+
+ return CS_SUCCESS;
+} /* report_error */
+EXPORT_SYMBOL(pcmcia_report_error);
+
+/* end of code which was in cs.c before */
+
+/*======================================================================*/
+
+void cs_error(client_handle_t handle, int func, int ret)
+{
+ error_info_t err = { func, ret };
+ pcmcia_report_error(handle, &err);
+}
+EXPORT_SYMBOL(cs_error);
+
+/*======================================================================*/
+
+static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info);
+static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr);
+
+static void pcmcia_release_bus_socket(struct kref *refcount)
+{
+ struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount);
+ pcmcia_put_socket(s->parent);
+ kfree(s);
+}
+
+static void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s)
+{
+ kref_put(&s->refcount, pcmcia_release_bus_socket);
+}
+
+static struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s)
+{
+ kref_get(&s->refcount);
+ return (s);
+}
+
+/**
+ * pcmcia_register_driver - register a PCMCIA driver with the bus core
+ *
+ * Registers a PCMCIA driver with the PCMCIA bus core.
+ */
+static int pcmcia_device_probe(struct device *dev);
+static int pcmcia_device_remove(struct device * dev);
+
+int pcmcia_register_driver(struct pcmcia_driver *driver)
+{
+ if (!driver)
+ return -EINVAL;
+
+ /* initialize common fields */
+ driver->drv.bus = &pcmcia_bus_type;
+ driver->drv.owner = driver->owner;
+ driver->drv.probe = pcmcia_device_probe;
+ driver->drv.remove = pcmcia_device_remove;
+
+ return driver_register(&driver->drv);
+}
+EXPORT_SYMBOL(pcmcia_register_driver);
+
+/**
+ * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
+ */
+void pcmcia_unregister_driver(struct pcmcia_driver *driver)
+{
+ driver_unregister(&driver->drv);
+}
+EXPORT_SYMBOL(pcmcia_unregister_driver);
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *proc_pccard = NULL;
+
+static int proc_read_drivers_callback(struct device_driver *driver, void *d)
+{
+ char **p = d;
+ struct pcmcia_driver *p_drv = container_of(driver,
+ struct pcmcia_driver, drv);
+
+ *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name,
+#ifdef CONFIG_MODULE_UNLOAD
+ (p_drv->owner) ? module_refcount(p_drv->owner) : 1
+#else
+ 1
+#endif
+ );
+ d = (void *) p;
+
+ return 0;
+}
+
+static int proc_read_drivers(char *buf, char **start, off_t pos,
+ int count, int *eof, void *data)
+{
+ char *p = buf;
+
+ bus_for_each_drv(&pcmcia_bus_type, NULL,
+ (void *) &p, proc_read_drivers_callback);
+
+ return (p - buf);
+}
+#endif
+
+/* pcmcia_device handling */
+
+static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
+{
+ struct device *tmp_dev;
+ tmp_dev = get_device(&p_dev->dev);
+ if (!tmp_dev)
+ return NULL;
+ return to_pcmcia_dev(tmp_dev);
+}
+
+static void pcmcia_put_dev(struct pcmcia_device *p_dev)
+{
+ if (p_dev)
+ put_device(&p_dev->dev);
+}
+
+static void pcmcia_release_dev(struct device *dev)
+{
+ struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
+ ds_dbg(1, "releasing dev %p\n", p_dev);
+ pcmcia_put_bus_socket(p_dev->socket->pcmcia);
+ kfree(p_dev);
+}
+
+
+static int pcmcia_device_probe(struct device * dev)
+{
+ struct pcmcia_device *p_dev;
+ struct pcmcia_driver *p_drv;
+ int ret = 0;
+
+ dev = get_device(dev);
+ if (!dev)
+ return -ENODEV;
+
+ p_dev = to_pcmcia_dev(dev);
+ p_drv = to_pcmcia_drv(dev->driver);
+
+ if (!try_module_get(p_drv->owner)) {
+ ret = -EINVAL;
+ goto put_dev;
+ }
+
+ if (p_drv->attach) {
+ p_dev->instance = p_drv->attach();
+ if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) {
+ printk(KERN_NOTICE "ds: unable to create instance "
+ "of '%s'!\n", p_drv->drv.name);
+ ret = -EINVAL;
+ }
+ }
+
+ if (ret)
+ module_put(p_drv->owner);
+ put_dev:
+ if ((ret) || !(p_drv->attach))
+ put_device(dev);
+ return (ret);
+}
+
+
+static int pcmcia_device_remove(struct device * dev)
+{
+ struct pcmcia_device *p_dev;
+ struct pcmcia_driver *p_drv;
+
+ /* detach the "instance" */
+ p_dev = to_pcmcia_dev(dev);
+ p_drv = to_pcmcia_drv(dev->driver);
+
+ if (p_drv) {
+ if ((p_drv->detach) && (p_dev->instance)) {
+ p_drv->detach(p_dev->instance);
+ /* from pcmcia_probe_device */
+ put_device(&p_dev->dev);
+ }
+ module_put(p_drv->owner);
+ }
+
+ return 0;
+}
+
+
+
+/*
+ * pcmcia_device_query -- determine information about a pcmcia device
+ */
+static int pcmcia_device_query(struct pcmcia_device *p_dev)
+{
+ cistpl_manfid_t manf_id;
+ cistpl_funcid_t func_id;
+ cistpl_vers_1_t vers1;
+ unsigned int i;
+
+ if (!pccard_read_tuple(p_dev->socket, p_dev->func,
+ CISTPL_MANFID, &manf_id)) {
+ p_dev->manf_id = manf_id.manf;
+ p_dev->card_id = manf_id.card;
+ p_dev->has_manf_id = 1;
+ p_dev->has_card_id = 1;
+ }
+
+ if (!pccard_read_tuple(p_dev->socket, p_dev->func,
+ CISTPL_FUNCID, &func_id)) {
+ p_dev->func_id = func_id.func;
+ p_dev->has_func_id = 1;
+ } else {
+ /* rule of thumb: cards with no FUNCID, but with
+ * common memory device geometry information, are
+ * probably memory cards (from pcmcia-cs) */
+ cistpl_device_geo_t devgeo;
+ if (!pccard_read_tuple(p_dev->socket, p_dev->func,
+ CISTPL_DEVICE_GEO, &devgeo)) {
+ ds_dbg(0, "mem device geometry probably means "
+ "FUNCID_MEMORY\n");
+ p_dev->func_id = CISTPL_FUNCID_MEMORY;
+ p_dev->has_func_id = 1;
+ }
+ }
+
+ if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
+ &vers1)) {
+ for (i=0; i < vers1.ns; i++) {
+ char *tmp;
+ unsigned int length;
+
+ tmp = vers1.str + vers1.ofs[i];
+
+ length = strlen(tmp) + 1;
+ if ((length < 3) || (length > 255))
+ continue;
+
+ p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
+ GFP_KERNEL);
+ if (!p_dev->prod_id[i])
+ continue;
+
+ p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
+ tmp, length);
+ }
+ }
+
+ return 0;
+}
+
+
+/* device_add_lock is needed to avoid double registration by cardmgr and kernel.
+ * Serializes pcmcia_device_add; will most likely be removed in future.
+ *
+ * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
+ * won't work, this doesn't matter much at the moment: the driver core doesn't
+ * support it either.
+ */
+static DECLARE_MUTEX(device_add_lock);
+
+static struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function)
+{
+ struct pcmcia_device *p_dev;
+ unsigned long flags;
+
+ s = pcmcia_get_bus_socket(s);
+ if (!s)
+ return NULL;
+
+ down(&device_add_lock);
+
+ p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
+ if (!p_dev)
+ goto err_put;
+ memset(p_dev, 0, sizeof(struct pcmcia_device));
+
+ p_dev->socket = s->parent;
+ p_dev->device_no = (s->device_count++);
+ p_dev->func = function;
+
+ p_dev->dev.bus = &pcmcia_bus_type;
+ p_dev->dev.parent = s->parent->dev.dev;
+ p_dev->dev.release = pcmcia_release_dev;
+ sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
+
+ /* compat */
+ p_dev->client.client_magic = CLIENT_MAGIC;
+ p_dev->client.Socket = s->parent;
+ p_dev->client.Function = function;
+ p_dev->client.state = CLIENT_UNBOUND;
+
+ /* Add to the list in pcmcia_bus_socket */
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_add_tail(&p_dev->socket_device_list, &s->devices_list);
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+
+ if (device_register(&p_dev->dev)) {
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_del(&p_dev->socket_device_list);
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+
+ goto err_free;
+ }
+
+ up(&device_add_lock);
+
+ return p_dev;
+
+ err_free:
+ kfree(p_dev);
+ s->device_count--;
+ err_put:
+ up(&device_add_lock);
+ pcmcia_put_bus_socket(s);
+
+ return NULL;
+}
+
+
+static int pcmcia_card_add(struct pcmcia_socket *s)
+{
+ cisinfo_t cisinfo;
+ cistpl_longlink_mfc_t mfc;
+ unsigned int no_funcs, i;
+ int ret = 0;
+
+ if (!(s->resource_setup_done))
+ return -EAGAIN; /* try again, but later... */
+
+ pcmcia_validate_mem(s);
+ ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
+ if (ret || !cisinfo.Chains) {
+ ds_dbg(0, "invalid CIS or invalid resources\n");
+ return -ENODEV;
+ }
+
+ if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
+ no_funcs = mfc.nfn;
+ else
+ no_funcs = 1;
+
+ /* this doesn't handle multifunction devices on one pcmcia function
+ * yet. */
+ for (i=0; i < no_funcs; i++)
+ pcmcia_device_add(s->pcmcia, i);
+
+ return (ret);
+}
+
+
+static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
+ struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
+ struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
+
+ /* matching by cardmgr */
+ if (p_dev->cardmgr == p_drv)
+ return 1;
+
+ return 0;
+}
+
+/************************ per-device sysfs output ***************************/
+
+#define pcmcia_device_attr(field, test, format) \
+static ssize_t field##_show (struct device *dev, char *buf) \
+{ \
+ struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
+ return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
+}
+
+#define pcmcia_device_stringattr(name, field) \
+static ssize_t name##_show (struct device *dev, char *buf) \
+{ \
+ struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
+ return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
+}
+
+pcmcia_device_attr(func, socket, "0x%02x\n");
+pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
+pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
+pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
+pcmcia_device_stringattr(prod_id1, prod_id[0]);
+pcmcia_device_stringattr(prod_id2, prod_id[1]);
+pcmcia_device_stringattr(prod_id3, prod_id[2]);
+pcmcia_device_stringattr(prod_id4, prod_id[3]);
+
+static struct device_attribute pcmcia_dev_attrs[] = {
+ __ATTR(function, 0444, func_show, NULL),
+ __ATTR_RO(func_id),
+ __ATTR_RO(manf_id),
+ __ATTR_RO(card_id),
+ __ATTR_RO(prod_id1),
+ __ATTR_RO(prod_id2),
+ __ATTR_RO(prod_id3),
+ __ATTR_RO(prod_id4),
+ __ATTR_NULL,
+};
+
+
+/*======================================================================
+
+ These manage a ring buffer of events pending for one user process
+
+======================================================================*/
+
+static int queue_empty(user_info_t *user)
+{
+ return (user->event_head == user->event_tail);
+}
+
+static event_t get_queued_event(user_info_t *user)
+{
+ user->event_tail = (user->event_tail+1) % MAX_EVENTS;
+ return user->event[user->event_tail];
+}
+
+static void queue_event(user_info_t *user, event_t event)
+{
+ user->event_head = (user->event_head+1) % MAX_EVENTS;
+ if (user->event_head == user->event_tail)
+ user->event_tail = (user->event_tail+1) % MAX_EVENTS;
+ user->event[user->event_head] = event;
+}
+
+static void handle_event(struct pcmcia_bus_socket *s, event_t event)
+{
+ user_info_t *user;
+ for (user = s->user; user; user = user->next)
+ queue_event(user, event);
+ wake_up_interruptible(&s->queue);
+}
+
+
+/*======================================================================
+
+ The card status event handler.
+
+======================================================================*/
+
+struct send_event_data {
+ struct pcmcia_socket *skt;
+ event_t event;
+ int priority;
+};
+
+static int send_event_callback(struct device *dev, void * _data)
+{
+ struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
+ struct send_event_data *data = _data;
+
+ /* we get called for all sockets, but may only pass the event
+ * for drivers _on the affected socket_ */
+ if (p_dev->socket != data->skt)
+ return 0;
+
+ if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE))
+ return 0;
+
+ if (p_dev->client.EventMask & data->event)
+ return EVENT(&p_dev->client, data->event, data->priority);
+
+ return 0;
+}
+
+static int send_event(struct pcmcia_socket *s, event_t event, int priority)
+{
+ int ret = 0;
+ struct send_event_data private;
+ struct pcmcia_bus_socket *skt = pcmcia_get_bus_socket(s->pcmcia);
+
+ if (!skt)
+ return 0;
+
+ private.skt = s;
+ private.event = event;
+ private.priority = priority;
+
+ ret = bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
+
+ pcmcia_put_bus_socket(skt);
+ return ret;
+} /* send_event */
+
+
+/* Normally, the event is passed to individual drivers after
+ * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
+ * is inversed to maintain historic compatibility.
+ */
+
+static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
+{
+ struct pcmcia_bus_socket *s = skt->pcmcia;
+ int ret = 0;
+
+ ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
+ event, priority, s);
+
+ switch (event) {
+
+ case CS_EVENT_CARD_REMOVAL:
+ s->state &= ~DS_SOCKET_PRESENT;
+ send_event(skt, event, priority);
+ unbind_request(s);
+ handle_event(s, event);
+ break;
+
+ case CS_EVENT_CARD_INSERTION:
+ s->state |= DS_SOCKET_PRESENT;
+ pcmcia_card_add(skt);
+ handle_event(s, event);
+ break;
+
+ case CS_EVENT_EJECTION_REQUEST:
+ ret = send_event(skt, event, priority);
+ break;
+
+ default:
+ handle_event(s, event);
+ send_event(skt, event, priority);
+ break;
+ }
+
+ return 0;
+} /* ds_event */
+
+
+/*======================================================================
+
+ bind_request() and bind_device() are merged by now. Register_client()
+ is called right at the end of bind_request(), during the driver's
+ ->attach() call. Individual descriptions:
+
+ bind_request() connects a socket to a particular client driver.
+ It looks up the specified device ID in the list of registered
+ drivers, binds it to the socket, and tries to create an instance
+ of the device. unbind_request() deletes a driver instance.
+
+ Bind_device() associates a device driver with a particular socket.
+ It is normally called by Driver Services after it has identified
+ a newly inserted card. An instance of that driver will then be
+ eligible to register as a client of this socket.
+
+ Register_client() uses the dev_info_t handle to match the
+ caller with a socket. The driver must have already been bound
+ to a socket with bind_device() -- in fact, bind_device()
+ allocates the client structure that will be used.
+
+======================================================================*/
+
+static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info)
+{
+ struct pcmcia_driver *p_drv;
+ struct pcmcia_device *p_dev;
+ int ret = 0;
+ unsigned long flags;
+
+ s = pcmcia_get_bus_socket(s);
+ if (!s)
+ return -EINVAL;
+
+ ds_dbg(2, "bind_request(%d, '%s')\n", s->parent->sock,
+ (char *)bind_info->dev_info);
+
+ p_drv = get_pcmcia_driver(&bind_info->dev_info);
+ if (!p_drv) {
+ ret = -EINVAL;
+ goto err_put;
+ }
+
+ if (!try_module_get(p_drv->owner)) {
+ ret = -EINVAL;
+ goto err_put_driver;
+ }
+
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
+ if (p_dev->func == bind_info->function) {
+ if ((p_dev->dev.driver == &p_drv->drv)) {
+ if (p_dev->cardmgr) {
+ /* if there's already a device
+ * registered, and it was registered
+ * by userspace before, we need to
+ * return the "instance". */
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ bind_info->instance = p_dev->instance;
+ ret = -EBUSY;
+ goto err_put_module;
+ } else {
+ /* the correct driver managed to bind
+ * itself magically to the correct
+ * device. */
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ p_dev->cardmgr = p_drv;
+ ret = 0;
+ goto err_put_module;
+ }
+ } else if (!p_dev->dev.driver) {
+ /* there's already a device available where
+ * no device has been bound to yet. So we don't
+ * need to register a device! */
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ goto rescan;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+
+ p_dev = pcmcia_device_add(s, bind_info->function);
+ if (!p_dev) {
+ ret = -EIO;
+ goto err_put_module;
+ }
+
+rescan:
+ p_dev->cardmgr = p_drv;
+
+ pcmcia_device_query(p_dev);
+
+ /*
+ * Prevent this racing with a card insertion.
+ */
+ down(&s->parent->skt_sem);
+ bus_rescan_devices(&pcmcia_bus_type);
+ up(&s->parent->skt_sem);
+
+ /* check whether the driver indeed matched. I don't care if this
+ * is racy or not, because it can only happen on cardmgr access
+ * paths...
+ */
+ if (!(p_dev->dev.driver == &p_drv->drv))
+ p_dev->cardmgr = NULL;
+
+ err_put_module:
+ module_put(p_drv->owner);
+ err_put_driver:
+ put_driver(&p_drv->drv);
+ err_put:
+ pcmcia_put_bus_socket(s);
+
+ return (ret);
+} /* bind_request */
+
+
+int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
+{
+ client_t *client = NULL;
+ struct pcmcia_socket *s;
+ struct pcmcia_bus_socket *skt = NULL;
+ struct pcmcia_device *p_dev = NULL;
+
+ /* Look for unbound client with matching dev_info */
+ down_read(&pcmcia_socket_list_rwsem);
+ list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
+ unsigned long flags;
+
+ if (s->state & SOCKET_CARDBUS)
+ continue;
+
+ skt = s->pcmcia;
+ if (!skt)
+ continue;
+ skt = pcmcia_get_bus_socket(skt);
+ if (!skt)
+ continue;
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) {
+ struct pcmcia_driver *p_drv;
+ p_dev = pcmcia_get_dev(p_dev);
+ if (!p_dev)
+ continue;
+ if (!(p_dev->client.state & CLIENT_UNBOUND) ||
+ (!p_dev->dev.driver)) {
+ pcmcia_put_dev(p_dev);
+ continue;
+ }
+ p_drv = to_pcmcia_drv(p_dev->dev.driver);
+ if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
+ client = &p_dev->client;
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ goto found;
+ }
+ pcmcia_put_dev(p_dev);
+ }
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ pcmcia_put_bus_socket(skt);
+ }
+ found:
+ up_read(&pcmcia_socket_list_rwsem);
+ if (!p_dev || !client)
+ return -ENODEV;
+
+ pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */
+
+ *handle = client;
+ client->state &= ~CLIENT_UNBOUND;
+ client->Socket = s;
+ client->EventMask = req->EventMask;
+ client->event_handler = req->event_handler;
+ client->event_callback_args = req->event_callback_args;
+ client->event_callback_args.client_handle = client;
+
+ if (s->state & SOCKET_CARDBUS)
+ client->state |= CLIENT_CARDBUS;
+
+ if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) &&
+ (client->Function != BIND_FN_ALL)) {
+ cistpl_longlink_mfc_t mfc;
+ if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc)
+ == CS_SUCCESS)
+ s->functions = mfc.nfn;
+ else
+ s->functions = 1;
+ s->config = kmalloc(sizeof(config_t) * s->functions,
+ GFP_KERNEL);
+ if (!s->config)
+ goto out_no_resource;
+ memset(s->config, 0, sizeof(config_t) * s->functions);
+ }
+
+ ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
+ client, p_dev->dev.bus_id);
+ if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE)
+ EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW);
+
+ if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
+ if (client->EventMask & CS_EVENT_CARD_INSERTION)
+ EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW);
+ }
+
+ return CS_SUCCESS;
+
+ out_no_resource:
+ pcmcia_put_dev(p_dev);
+ return CS_OUT_OF_RESOURCE;
+} /* register_client */
+EXPORT_SYMBOL(pcmcia_register_client);
+
+
+/*====================================================================*/
+
+extern struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s);
+
+static int get_device_info(struct pcmcia_bus_socket *s, bind_info_t *bind_info, int first)
+{
+ dev_node_t *node;
+ struct pcmcia_device *p_dev;
+ unsigned long flags;
+ int ret = 0;
+
+#ifdef CONFIG_CARDBUS
+ /*
+ * Some unbelievably ugly code to associate the PCI cardbus
+ * device and its driver with the PCMCIA "bind" information.
+ */
+ {
+ struct pci_bus *bus;
+
+ bus = pcmcia_lookup_bus(s->parent);
+ if (bus) {
+ struct list_head *list;
+ struct pci_dev *dev = NULL;
+
+ list = bus->devices.next;
+ while (list != &bus->devices) {
+ struct pci_dev *pdev = pci_dev_b(list);
+ list = list->next;
+
+ if (first) {
+ dev = pdev;
+ break;
+ }
+
+ /* Try to handle "next" here some way? */
+ }
+ if (dev && dev->driver) {
+ strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN);
+ bind_info->major = 0;
+ bind_info->minor = 0;
+ bind_info->next = NULL;
+ return 0;
+ }
+ }
+ }
+#endif
+
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
+ if (p_dev->func == bind_info->function) {
+ p_dev = pcmcia_get_dev(p_dev);
+ if (!p_dev)
+ continue;
+ goto found;
+ }
+ }
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ return -ENODEV;
+
+ found:
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+
+ if ((!p_dev->instance) ||
+ (p_dev->instance->state & DEV_CONFIG_PENDING)) {
+ ret = -EAGAIN;
+ goto err_put;
+ }
+
+ if (first)
+ node = p_dev->instance->dev;
+ else
+ for (node = p_dev->instance->dev; node; node = node->next)
+ if (node == bind_info->next)
+ break;
+ if (!node) {
+ ret = -ENODEV;
+ goto err_put;
+ }
+
+ strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN);
+ bind_info->major = node->major;
+ bind_info->minor = node->minor;
+ bind_info->next = node->next;
+
+ err_put:
+ pcmcia_put_dev(p_dev);
+ return (ret);
+} /* get_device_info */
+
+/*====================================================================*/
+
+/* unbind _all_ devices attached to a given pcmcia_bus_socket. The
+ * drivers have been called with EVENT_CARD_REMOVAL before.
+ */
+static int unbind_request(struct pcmcia_bus_socket *s)
+{
+ struct pcmcia_device *p_dev;
+ unsigned long flags;
+
+ ds_dbg(2, "unbind_request(%d)\n", s->parent->sock);
+
+ s->device_count = 0;
+
+ for (;;) {
+ /* unregister all pcmcia_devices registered with this socket*/
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ if (list_empty(&s->devices_list)) {
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ return 0;
+ }
+ p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
+ list_del(&p_dev->socket_device_list);
+ p_dev->client.state |= CLIENT_STALE;
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+
+ device_unregister(&p_dev->dev);
+ }
+
+ return 0;
+} /* unbind_request */
+
+int pcmcia_deregister_client(client_handle_t handle)
+{
+ struct pcmcia_socket *s;
+ int i;
+ struct pcmcia_device *p_dev = handle_to_pdev(handle);
+
+ if (CHECK_HANDLE(handle))
+ return CS_BAD_HANDLE;
+
+ s = SOCKET(handle);
+ ds_dbg(1, "deregister_client(%p)\n", handle);
+
+ if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
+ goto warn_out;
+ for (i = 0; i < MAX_WIN; i++)
+ if (handle->state & CLIENT_WIN_REQ(i))
+ goto warn_out;
+
+ if (handle->state & CLIENT_STALE) {
+ handle->client_magic = 0;
+ handle->state &= ~CLIENT_STALE;
+ pcmcia_put_dev(p_dev);
+ } else {
+ handle->state = CLIENT_UNBOUND;
+ handle->event_handler = NULL;
+ }
+
+ return CS_SUCCESS;
+ warn_out:
+ printk(KERN_WARNING "ds: deregister_client was called too early.\n");
+ return CS_IN_USE;
+} /* deregister_client */
+EXPORT_SYMBOL(pcmcia_deregister_client);
+
+
+/*======================================================================
+
+ The user-mode PC Card device interface
+
+======================================================================*/
+
+static int ds_open(struct inode *inode, struct file *file)
+{
+ socket_t i = iminor(inode);
+ struct pcmcia_bus_socket *s;
+ user_info_t *user;
+
+ ds_dbg(0, "ds_open(socket %d)\n", i);
+
+ s = get_socket_info_by_nr(i);
+ if (!s)
+ return -ENODEV;
+ s = pcmcia_get_bus_socket(s);
+ if (!s)
+ return -ENODEV;
+
+ if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
+ if (s->state & DS_SOCKET_BUSY) {
+ pcmcia_put_bus_socket(s);
+ return -EBUSY;
+ }
+ else
+ s->state |= DS_SOCKET_BUSY;
+ }
+
+ user = kmalloc(sizeof(user_info_t), GFP_KERNEL);
+ if (!user) {
+ pcmcia_put_bus_socket(s);
+ return -ENOMEM;
+ }
+ user->event_tail = user->event_head = 0;
+ user->next = s->user;
+ user->user_magic = USER_MAGIC;
+ user->socket = s;
+ s->user = user;
+ file->private_data = user;
+
+ if (s->state & DS_SOCKET_PRESENT)
+ queue_event(user, CS_EVENT_CARD_INSERTION);
+ return 0;
+} /* ds_open */
+
+/*====================================================================*/
+
+static int ds_release(struct inode *inode, struct file *file)
+{
+ struct pcmcia_bus_socket *s;
+ user_info_t *user, **link;
+
+ ds_dbg(0, "ds_release(socket %d)\n", iminor(inode));
+
+ user = file->private_data;
+ if (CHECK_USER(user))
+ goto out;
+
+ s = user->socket;
+
+ /* Unlink user data structure */
+ if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
+ s->state &= ~DS_SOCKET_BUSY;
+ }
+ file->private_data = NULL;
+ for (link = &s->user; *link; link = &(*link)->next)
+ if (*link == user) break;
+ if (link == NULL)
+ goto out;
+ *link = user->next;
+ user->user_magic = 0;
+ kfree(user);
+ pcmcia_put_bus_socket(s);
+out:
+ return 0;
+} /* ds_release */
+
+/*====================================================================*/
+
+static ssize_t ds_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct pcmcia_bus_socket *s;
+ user_info_t *user;
+ int ret;
+
+ ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode));
+
+ if (count < 4)
+ return -EINVAL;
+
+ user = file->private_data;
+ if (CHECK_USER(user))
+ return -EIO;
+
+ s = user->socket;
+ if (s->state & DS_SOCKET_DEAD)
+ return -EIO;
+
+ ret = wait_event_interruptible(s->queue, !queue_empty(user));
+ if (ret == 0)
+ ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4;
+
+ return ret;
+} /* ds_read */
+
+/*====================================================================*/
+
+static ssize_t ds_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode));
+
+ if (count != 4)
+ return -EINVAL;
+ if ((file->f_flags & O_ACCMODE) == O_RDONLY)
+ return -EBADF;
+
+ return -EIO;
+} /* ds_write */
+
+/*====================================================================*/
+
+/* No kernel lock - fine */
+static u_int ds_poll(struct file *file, poll_table *wait)
+{
+ struct pcmcia_bus_socket *s;
+ user_info_t *user;
+
+ ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode));
+
+ user = file->private_data;
+ if (CHECK_USER(user))
+ return POLLERR;
+ s = user->socket;
+ /*
+ * We don't check for a dead socket here since that
+ * will send cardmgr into an endless spin.
+ */
+ poll_wait(file, &s->queue, wait);
+ if (!queue_empty(user))
+ return POLLIN | POLLRDNORM;
+ return 0;
+} /* ds_poll */
+
+/*====================================================================*/
+
+extern int pcmcia_adjust_resource_info(adjust_t *adj);
+
+static int ds_ioctl(struct inode * inode, struct file * file,
+ u_int cmd, u_long arg)
+{
+ struct pcmcia_bus_socket *s;
+ void __user *uarg = (char __user *)arg;
+ u_int size;
+ int ret, err;
+ ds_ioctl_arg_t *buf;
+ user_info_t *user;
+
+ ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg);
+
+ user = file->private_data;
+ if (CHECK_USER(user))
+ return -EIO;
+
+ s = user->socket;
+ if (s->state & DS_SOCKET_DEAD)
+ return -EIO;
+
+ size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT;
+ if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL;
+
+ /* Permission check */
+ if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (cmd & IOC_IN) {
+ if (!access_ok(VERIFY_READ, uarg, size)) {
+ ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT);
+ return -EFAULT;
+ }
+ }
+ if (cmd & IOC_OUT) {
+ if (!access_ok(VERIFY_WRITE, uarg, size)) {
+ ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT);
+ return -EFAULT;
+ }
+ }
+ buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ err = ret = 0;
+
+ if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size);
+
+ switch (cmd) {
+ case DS_ADJUST_RESOURCE_INFO:
+ ret = pcmcia_adjust_resource_info(&buf->adjust);
+ break;
+ case DS_GET_CARD_SERVICES_INFO:
+ ret = pcmcia_get_card_services_info(&buf->servinfo);
+ break;
+ case DS_GET_CONFIGURATION_INFO:
+ if (buf->config.Function &&
+ (buf->config.Function >= s->parent->functions))
+ ret = CS_BAD_ARGS;
+ else
+ ret = pccard_get_configuration_info(s->parent,
+ buf->config.Function, &buf->config);
+ break;
+ case DS_GET_FIRST_TUPLE:
+ down(&s->parent->skt_sem);
+ pcmcia_validate_mem(s->parent);
+ up(&s->parent->skt_sem);
+ ret = pccard_get_first_tuple(s->parent, BIND_FN_ALL, &buf->tuple);
+ break;
+ case DS_GET_NEXT_TUPLE:
+ ret = pccard_get_next_tuple(s->parent, BIND_FN_ALL, &buf->tuple);
+ break;
+ case DS_GET_TUPLE_DATA:
+ buf->tuple.TupleData = buf->tuple_parse.data;
+ buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data);
+ ret = pccard_get_tuple_data(s->parent, &buf->tuple);
+ break;
+ case DS_PARSE_TUPLE:
+ buf->tuple.TupleData = buf->tuple_parse.data;
+ ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse);
+ break;
+ case DS_RESET_CARD:
+ ret = pccard_reset_card(s->parent);
+ break;
+ case DS_GET_STATUS:
+ if (buf->status.Function &&
+ (buf->status.Function >= s->parent->functions))
+ ret = CS_BAD_ARGS;
+ else
+ ret = pccard_get_status(s->parent, buf->status.Function, &buf->status);
+ break;
+ case DS_VALIDATE_CIS:
+ down(&s->parent->skt_sem);
+ pcmcia_validate_mem(s->parent);
+ up(&s->parent->skt_sem);
+ ret = pccard_validate_cis(s->parent, BIND_FN_ALL, &buf->cisinfo);
+ break;
+ case DS_SUSPEND_CARD:
+ ret = pcmcia_suspend_card(s->parent);
+ break;
+ case DS_RESUME_CARD:
+ ret = pcmcia_resume_card(s->parent);
+ break;
+ case DS_EJECT_CARD:
+ err = pcmcia_eject_card(s->parent);
+ break;
+ case DS_INSERT_CARD:
+ err = pcmcia_insert_card(s->parent);
+ break;
+ case DS_ACCESS_CONFIGURATION_REGISTER:
+ if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) {
+ err = -EPERM;
+ goto free_out;
+ }
+ if (buf->conf_reg.Function &&
+ (buf->conf_reg.Function >= s->parent->functions))
+ ret = CS_BAD_ARGS;
+ else
+ ret = pccard_access_configuration_register(s->parent,
+ buf->conf_reg.Function, &buf->conf_reg);
+ break;
+ case DS_GET_FIRST_REGION:
+ case DS_GET_NEXT_REGION:
+ case DS_BIND_MTD:
+ if (!capable(CAP_SYS_ADMIN)) {
+ err = -EPERM;
+ goto free_out;
+ } else {
+ static int printed = 0;
+ if (!printed) {
+ printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n");
+ printk(KERN_WARNING "MTD handling any more.\n");
+ printed++;
+ }
+ }
+ err = -EINVAL;
+ goto free_out;
+ break;
+ case DS_GET_FIRST_WINDOW:
+ ret = pcmcia_get_window(s->parent, &buf->win_info.handle, 0,
+ &buf->win_info.window);
+ break;
+ case DS_GET_NEXT_WINDOW:
+ ret = pcmcia_get_window(s->parent, &buf->win_info.handle,
+ buf->win_info.handle->index + 1, &buf->win_info.window);
+ break;
+ case DS_GET_MEM_PAGE:
+ ret = pcmcia_get_mem_page(buf->win_info.handle,
+ &buf->win_info.map);
+ break;
+ case DS_REPLACE_CIS:
+ ret = pcmcia_replace_cis(s->parent, &buf->cisdump);
+ break;
+ case DS_BIND_REQUEST:
+ if (!capable(CAP_SYS_ADMIN)) {
+ err = -EPERM;
+ goto free_out;
+ }
+ err = bind_request(s, &buf->bind_info);
+ break;
+ case DS_GET_DEVICE_INFO:
+ err = get_device_info(s, &buf->bind_info, 1);
+ break;
+ case DS_GET_NEXT_DEVICE:
+ err = get_device_info(s, &buf->bind_info, 0);
+ break;
+ case DS_UNBIND_REQUEST:
+ err = 0;
+ break;
+ default:
+ err = -EINVAL;
+ }
+
+ if ((err == 0) && (ret != CS_SUCCESS)) {
+ ds_dbg(2, "ds_ioctl: ret = %d\n", ret);
+ switch (ret) {
+ case CS_BAD_SOCKET: case CS_NO_CARD:
+ err = -ENODEV; break;
+ case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ:
+ case CS_BAD_TUPLE:
+ err = -EINVAL; break;
+ case CS_IN_USE:
+ err = -EBUSY; break;
+ case CS_OUT_OF_RESOURCE:
+ err = -ENOSPC; break;
+ case CS_NO_MORE_ITEMS:
+ err = -ENODATA; break;
+ case CS_UNSUPPORTED_FUNCTION:
+ err = -ENOSYS; break;
+ default:
+ err = -EIO; break;
+ }
+ }
+
+ if (cmd & IOC_OUT) {
+ if (__copy_to_user(uarg, (char *)buf, size))
+ err = -EFAULT;
+ }
+
+free_out:
+ kfree(buf);
+ return err;
+} /* ds_ioctl */
+
+/*====================================================================*/
+
+static struct file_operations ds_fops = {
+ .owner = THIS_MODULE,
+ .open = ds_open,
+ .release = ds_release,
+ .ioctl = ds_ioctl,
+ .read = ds_read,
+ .write = ds_write,
+ .poll = ds_poll,
+};
+
+static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
+{
+ struct pcmcia_socket *socket = class_get_devdata(class_dev);
+ struct pcmcia_bus_socket *s;
+ int ret;
+
+ s = kmalloc(sizeof(struct pcmcia_bus_socket), GFP_KERNEL);
+ if(!s)
+ return -ENOMEM;
+ memset(s, 0, sizeof(struct pcmcia_bus_socket));
+
+ /* get reference to parent socket */
+ s->parent = pcmcia_get_socket(socket);
+ if (!s->parent) {
+ printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
+ kfree (s);
+ return -ENODEV;
+ }
+
+ kref_init(&s->refcount);
+
+ /*
+ * Ugly. But we want to wait for the socket threads to have started up.
+ * We really should let the drivers themselves drive some of this..
+ */
+ msleep(250);
+
+ init_waitqueue_head(&s->queue);
+ INIT_LIST_HEAD(&s->devices_list);
+
+ /* Set up hotline to Card Services */
+ s->callback.owner = THIS_MODULE;
+ s->callback.event = &ds_event;
+ s->callback.resources_done = &pcmcia_card_add;
+ socket->pcmcia = s;
+
+ ret = pccard_register_pcmcia(socket, &s->callback);
+ if (ret) {
+ printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
+ pcmcia_put_bus_socket(s);
+ socket->pcmcia = NULL;
+ return (ret);
+ }
+
+ return 0;
+}
+
+
+static void pcmcia_bus_remove_socket(struct class_device *class_dev)
+{
+ struct pcmcia_socket *socket = class_get_devdata(class_dev);
+
+ if (!socket || !socket->pcmcia)
+ return;
+
+ pccard_register_pcmcia(socket, NULL);
+
+ socket->pcmcia->state |= DS_SOCKET_DEAD;
+ pcmcia_put_bus_socket(socket->pcmcia);
+ socket->pcmcia = NULL;
+
+ return;
+}
+
+
+/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
+static struct class_interface pcmcia_bus_interface = {
+ .class = &pcmcia_socket_class,
+ .add = &pcmcia_bus_add_socket,
+ .remove = &pcmcia_bus_remove_socket,
+};
+
+
+struct bus_type pcmcia_bus_type = {
+ .name = "pcmcia",
+ .match = pcmcia_bus_match,
+ .dev_attrs = pcmcia_dev_attrs,
+};
+EXPORT_SYMBOL(pcmcia_bus_type);
+
+
+static int __init init_pcmcia_bus(void)
+{
+ int i;
+
+ spin_lock_init(&pcmcia_dev_list_lock);
+
+ bus_register(&pcmcia_bus_type);
+ class_interface_register(&pcmcia_bus_interface);
+
+ /* Set up character device for user mode clients */
+ i = register_chrdev(0, "pcmcia", &ds_fops);
+ if (i == -EBUSY)
+ printk(KERN_NOTICE "unable to find a free device # for "
+ "Driver Services\n");
+ else
+ major_dev = i;
+
+#ifdef CONFIG_PROC_FS
+ proc_pccard = proc_mkdir("pccard", proc_bus);
+ if (proc_pccard)
+ create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL);
+#endif
+
+ return 0;
+}
+fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
+ * pcmcia_socket_class is already registered */
+
+
+static void __exit exit_pcmcia_bus(void)
+{
+ class_interface_unregister(&pcmcia_bus_interface);
+
+#ifdef CONFIG_PROC_FS
+ if (proc_pccard) {
+ remove_proc_entry("drivers", proc_pccard);
+ remove_proc_entry("pccard", proc_bus);
+ }
+#endif
+ if (major_dev != -1)
+ unregister_chrdev(major_dev, "pcmcia");
+
+ bus_unregister(&pcmcia_bus_type);
+}
+module_exit(exit_pcmcia_bus);
+
+
+
+/* helpers for backwards-compatible functions */
+
+static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr)
+{
+ struct pcmcia_socket * s = pcmcia_get_socket_by_nr(nr);
+ if (s && s->pcmcia)
+ return s->pcmcia;
+ else
+ return NULL;
+}
+
+/* backwards-compatible accessing of driver --- by name! */
+
+static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info)
+{
+ struct device_driver *drv;
+ struct pcmcia_driver *p_drv;
+
+ drv = driver_find((char *) dev_info, &pcmcia_bus_type);
+ if (!drv)
+ return NULL;
+
+ p_drv = container_of(drv, struct pcmcia_driver, drv);
+
+ return (p_drv);
+}
+
+MODULE_ALIAS("ds");