ds.c
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上传日期:2013-02-24
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文件大小:27k
- /*======================================================================
- PC Card Driver Services
-
- ds.c 1.112 2001/10/13 00:08:28
-
- The contents of this file are subject to the Mozilla Public
- License Version 1.1 (the "License"); you may not use this file
- except in compliance with the License. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
- Software distributed under the License is distributed on an "AS
- IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.
- 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.
- Alternatively, the contents of this file may be used under the
- terms of the GNU General Public License version 2 (the "GPL"), in
- which case the provisions of the GPL are applicable instead of the
- above. If you wish to allow the use of your version of this file
- only under the terms of the GPL and not to allow others to use
- your version of this file under the MPL, indicate your decision
- by deleting the provisions above and replace them with the notice
- and other provisions required by the GPL. If you do not delete
- the provisions above, a recipient may use your version of this
- file under either the MPL or the GPL.
-
- ======================================================================*/
- #include <linux/config.h>
- #include <linux/module.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 <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 <linux/devfs_fs_kernel.h>
- /*====================================================================*/
- /* Module parameters */
- MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
- MODULE_DESCRIPTION("PCMCIA Driver Services " CS_RELEASE);
- MODULE_LICENSE("Dual MPL/GPL");
- #define INT_MODULE_PARM(n, v) static int n = v; MODULE_PARM(n, "i")
- #define PCMCIA_DEBUG 5
- #ifdef PCMCIA_DEBUG
- INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
- #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_INFO args)
- static const char *version =
- "ds.c 1.112 2001/10/13 00:08:28 (David Hinds)";
- #else
- #define DEBUG(n, args...)
- #endif
- /*====================================================================*/
- typedef struct driver_info_t {
- dev_info_t dev_info;
- int use_count, status;
- dev_link_t *(*attach)(void);
- void (*detach)(dev_link_t *);
- struct driver_info_t *next;
- } driver_info_t;
- typedef struct socket_bind_t {
- driver_info_t *driver;
- u_char function;
- dev_link_t *instance;
- struct socket_bind_t *next;
- } socket_bind_t;
- /* 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;
- } user_info_t;
- /* Socket state information */
- typedef struct socket_info_t {
- client_handle_t handle;
- int state;
- user_info_t *user;
- int req_pending, req_result;
- wait_queue_head_t queue, request;
- struct timer_list removal;
- socket_bind_t *bind;
- } socket_info_t;
- #define SOCKET_PRESENT 0x01
- #define SOCKET_BUSY 0x02
- #define SOCKET_REMOVAL_PENDING 0x10
- /*====================================================================*/
- /* Device driver ID passed to Card Services */
- static dev_info_t dev_info = "Driver Services";
- /* Linked list of all registered device drivers */
- static driver_info_t *root_driver = NULL;
- static int sockets = 0, major_dev = -1;
- static socket_info_t *socket_table = NULL;
- extern struct proc_dir_entry *proc_pccard;
- /* We use this to distinguish in-kernel from modular drivers */
- static int init_status = 1;
- /*====================================================================*/
- static void cs_error(client_handle_t handle, int func, int ret)
- {
- error_info_t err = { func, ret };
- pcmcia_report_error(handle, &err);
- }
- /*======================================================================
- Register_pccard_driver() and unregister_pccard_driver() are used
- tell Driver Services that a PC Card client driver is available to
- be bound to sockets.
-
- ======================================================================*/
- int register_pccard_driver(dev_info_t *dev_info,
- dev_link_t *(*attach)(void),
- void (*detach)(dev_link_t *))
- {
- driver_info_t *driver;
- socket_bind_t *b;
- int i;
- DEBUG(0, "ds: register_pccard_driver('%s')n", (char *)dev_info);
- for (driver = root_driver; driver; driver = driver->next)
- if (strncmp((char *)dev_info, (char *)driver->dev_info,
- DEV_NAME_LEN) == 0)
- break;
- if (!driver) {
- driver = kmalloc(sizeof(driver_info_t), GFP_KERNEL);
- if (!driver) return -ENOMEM;
- strncpy(driver->dev_info, (char *)dev_info, DEV_NAME_LEN);
- driver->use_count = 0;
- driver->status = init_status;
- driver->next = root_driver;
- root_driver = driver;
- }
- driver->attach = attach;
- driver->detach = detach;
- if (driver->use_count == 0) return 0;
-
- /* Instantiate any already-bound devices */
- for (i = 0; i < sockets; i++)
- for (b = socket_table[i].bind; b; b = b->next) {
- if (b->driver != driver) continue;
- b->instance = driver->attach();
- if (b->instance == NULL)
- printk(KERN_NOTICE "ds: unable to create instance "
- "of '%s'!n", driver->dev_info);
- }
-
- return 0;
- } /* register_pccard_driver */
- /*====================================================================*/
- int unregister_pccard_driver(dev_info_t *dev_info)
- {
- driver_info_t *target, **d = &root_driver;
- socket_bind_t *b;
- int i;
-
- DEBUG(0, "ds: unregister_pccard_driver('%s')n",
- (char *)dev_info);
- while ((*d) && (strncmp((*d)->dev_info, (char *)dev_info,
- DEV_NAME_LEN) != 0))
- d = &(*d)->next;
- if (*d == NULL)
- return -ENODEV;
-
- target = *d;
- if (target->use_count == 0) {
- *d = target->next;
- kfree(target);
- } else {
- /* Blank out any left-over device instances */
- target->attach = NULL; target->detach = NULL;
- for (i = 0; i < sockets; i++)
- for (b = socket_table[i].bind; b; b = b->next)
- if (b->driver == target) b->instance = NULL;
- }
- return 0;
- } /* unregister_pccard_driver */
- /*====================================================================*/
- #ifdef CONFIG_PROC_FS
- static int proc_read_drivers(char *buf, char **start, off_t pos,
- int count, int *eof, void *data)
- {
- driver_info_t *d;
- char *p = buf;
- for (d = root_driver; d; d = d->next)
- p += sprintf(p, "%-24.24s %d %dn", d->dev_info,
- d->status, d->use_count);
- return (p - buf);
- }
- #endif
- /*======================================================================
- 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(socket_info_t *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);
- }
- static int handle_request(socket_info_t *s, event_t event)
- {
- if (s->req_pending != 0)
- return CS_IN_USE;
- if (s->state & SOCKET_BUSY)
- s->req_pending = 1;
- handle_event(s, event);
- if (s->req_pending > 0) {
- interruptible_sleep_on(&s->request);
- if (signal_pending(current))
- return CS_IN_USE;
- else
- return s->req_result;
- }
- return CS_SUCCESS;
- }
- static void handle_removal(u_long sn)
- {
- socket_info_t *s = &socket_table[sn];
- handle_event(s, CS_EVENT_CARD_REMOVAL);
- s->state &= ~SOCKET_REMOVAL_PENDING;
- }
- /*======================================================================
- The card status event handler.
-
- ======================================================================*/
- static int ds_event(event_t event, int priority,
- event_callback_args_t *args)
- {
- socket_info_t *s;
- int i;
- DEBUG(1, "ds: ds_event(0x%06x, %d, 0x%p)n",
- event, priority, args->client_handle);
- s = args->client_data;
- i = s - socket_table;
-
- switch (event) {
-
- case CS_EVENT_CARD_REMOVAL:
- s->state &= ~SOCKET_PRESENT;
- if (!(s->state & SOCKET_REMOVAL_PENDING)) {
- s->state |= SOCKET_REMOVAL_PENDING;
- s->removal.expires = jiffies + HZ/10;
- add_timer(&s->removal);
- }
- break;
-
- case CS_EVENT_CARD_INSERTION:
- s->state |= SOCKET_PRESENT;
- handle_event(s, event);
- break;
- case CS_EVENT_EJECTION_REQUEST:
- return handle_request(s, event);
- break;
-
- default:
- handle_event(s, event);
- break;
- }
- return 0;
- } /* ds_event */
- /*======================================================================
- bind_mtd() connects a memory region with an MTD client.
-
- ======================================================================*/
- static int bind_mtd(int i, mtd_info_t *mtd_info)
- {
- mtd_bind_t bind_req;
- int ret;
- bind_req.dev_info = &mtd_info->dev_info;
- bind_req.Attributes = mtd_info->Attributes;
- bind_req.Socket = i;
- bind_req.CardOffset = mtd_info->CardOffset;
- ret = pcmcia_bind_mtd(&bind_req);
- if (ret != CS_SUCCESS) {
- cs_error(NULL, BindMTD, ret);
- printk(KERN_NOTICE "ds: unable to bind MTD '%s' to socket %d"
- " offset 0x%xn",
- (char *)bind_req.dev_info, i, bind_req.CardOffset);
- return -ENODEV;
- }
- return 0;
- } /* bind_mtd */
- /*======================================================================
- 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.
-
- ======================================================================*/
- static int bind_request(int i, bind_info_t *bind_info)
- {
- struct driver_info_t *driver;
- socket_bind_t *b;
- bind_req_t bind_req;
- socket_info_t *s = &socket_table[i];
- int ret;
- DEBUG(2, "bind_request(%d, '%s')n", i,
- (char *)bind_info->dev_info);
- for (driver = root_driver; driver; driver = driver->next)
- if (strcmp((char *)driver->dev_info,
- (char *)bind_info->dev_info) == 0)
- break;
- printk("driver=%xn",driver);
- if (driver == NULL) {
- driver = kmalloc(sizeof(driver_info_t), GFP_KERNEL);
- if (!driver) return -ENOMEM;
- strncpy(driver->dev_info, bind_info->dev_info, DEV_NAME_LEN);
- driver->use_count = 0;
- driver->next = root_driver;
- driver->attach = NULL; driver->detach = NULL;
- root_driver = driver;
- }
- for (b = s->bind; b; b = b->next)
- if ((driver == b->driver) &&
- (bind_info->function == b->function))
- break;
- if (b != NULL) {
- bind_info->instance = b->instance;
- return -EBUSY;
- }
- bind_req.Socket = i;
- bind_req.Function = bind_info->function;
- bind_req.dev_info = &driver->dev_info;
- ret = pcmcia_bind_device(&bind_req);
- if (ret != CS_SUCCESS) {
- cs_error(NULL, BindDevice, ret);
- printk(KERN_NOTICE "ds: unable to bind '%s' to socket %dn",
- (char *)dev_info, i);
- return -ENODEV;
- }
- /* Add binding to list for this socket */
- driver->use_count++;
- b = kmalloc(sizeof(socket_bind_t), GFP_KERNEL);
- if (!b)
- {
- driver->use_count--;
- return -ENOMEM;
- }
- b->driver = driver;
- b->function = bind_info->function;
- b->instance = NULL;
- b->next = s->bind;
- s->bind = b;
-
- printk("driver->attach = %xn",driver->attach);
- if (driver->attach) {
- b->instance = driver->attach();
- if (b->instance == NULL) {
- printk(KERN_NOTICE "ds: unable to create instance "
- "of '%s'!n", (char *)bind_info->dev_info);
- return -ENODEV;
- }
- }
-
- return 0;
- } /* bind_request */
- /*====================================================================*/
- static int get_device_info(int i, bind_info_t *bind_info, int first)
- {
- socket_info_t *s = &socket_table[i];
- socket_bind_t *b;
- dev_node_t *node;
- #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->handle);
- 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) {
- strncpy(bind_info->name, dev->driver->name, DEV_NAME_LEN);
- bind_info->name[DEV_NAME_LEN-1] = ' ';
- bind_info->major = 0;
- bind_info->minor = 0;
- bind_info->next = NULL;
- return 0;
- }
- }
- }
- #endif
- printk("DS: start get_dev_infon");
- for (b = s->bind; b; b = b->next)
- if ((strcmp((char *)b->driver->dev_info,
- (char *)bind_info->dev_info) == 0) &&
- (b->function == bind_info->function))
- break;
- if (b == NULL) return -ENODEV;
- if ((b->instance == NULL) ||
- (b->instance->state & DEV_CONFIG_PENDING)) {
- printk("EAGAIN :-Pn");
- return -EAGAIN;
- }
- if (first)
- node = b->instance->dev;
- else
- for (node = b->instance->dev; node; node = node->next)
- if (node == bind_info->next) break;
- if (node == NULL) return -ENODEV;
- printk("DS: end get_dev_infon");
- strncpy(bind_info->name, node->dev_name, DEV_NAME_LEN);
- bind_info->name[DEV_NAME_LEN-1] = ' ';
- bind_info->major = node->major;
- bind_info->minor = node->minor;
- bind_info->next = node->next;
-
- return 0;
- } /* get_device_info */
- /*====================================================================*/
- static int unbind_request(int i, bind_info_t *bind_info)
- {
- socket_info_t *s = &socket_table[i];
- socket_bind_t **b, *c;
- DEBUG(2, "unbind_request(%d, '%s')n", i,
- (char *)bind_info->dev_info);
- for (b = &s->bind; *b; b = &(*b)->next)
- if ((strcmp((char *)(*b)->driver->dev_info,
- (char *)bind_info->dev_info) == 0) &&
- ((*b)->function == bind_info->function))
- break;
- if (*b == NULL)
- return -ENODEV;
-
- c = *b;
- c->driver->use_count--;
- if (c->driver->detach) {
- if (c->instance)
- c->driver->detach(c->instance);
- } else {
- if (c->driver->use_count == 0) {
- driver_info_t **d;
- for (d = &root_driver; *d; d = &((*d)->next))
- if (c->driver == *d) break;
- *d = (*d)->next;
- kfree(c->driver);
- }
- }
- *b = c->next;
- kfree(c);
-
- return 0;
- } /* unbind_request */
- /*======================================================================
- The user-mode PC Card device interface
- ======================================================================*/
- static int ds_open(struct inode *inode, struct file *file)
- {
- socket_t i = MINOR(inode->i_rdev);
- socket_info_t *s;
- user_info_t *user;
- DEBUG(0, "ds_open(socket %d)n", i);
- if ((i >= sockets) || (sockets == 0))
- return -ENODEV;
- s = &socket_table[i];
- if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
- if (s->state & SOCKET_BUSY)
- return -EBUSY;
- else
- s->state |= SOCKET_BUSY;
- }
-
- user = kmalloc(sizeof(user_info_t), GFP_KERNEL);
- if (!user) return -ENOMEM;
- user->event_tail = user->event_head = 0;
- user->next = s->user;
- user->user_magic = USER_MAGIC;
- s->user = user;
- file->private_data = user;
-
- if (s->state & SOCKET_PRESENT)
- queue_event(user, CS_EVENT_CARD_INSERTION);
- return 0;
- } /* ds_open */
- /*====================================================================*/
- static int ds_release(struct inode *inode, struct file *file)
- {
- socket_t i = MINOR(inode->i_rdev);
- socket_info_t *s;
- user_info_t *user, **link;
- DEBUG(0, "ds_release(socket %d)n", i);
- if ((i >= sockets) || (sockets == 0))
- return 0;
- lock_kernel();
- s = &socket_table[i];
- user = file->private_data;
- if (CHECK_USER(user))
- goto out;
- /* Unlink user data structure */
- if ((file->f_flags & O_ACCMODE) != O_RDONLY)
- s->state &= ~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);
- out:
- unlock_kernel();
- return 0;
- } /* ds_release */
- /*====================================================================*/
- static ssize_t ds_read(struct file *file, char *buf,
- size_t count, loff_t *ppos)
- {
- socket_t i = MINOR(file->f_dentry->d_inode->i_rdev);
- socket_info_t *s;
- user_info_t *user;
- DEBUG(2, "ds_read(socket %d)n", i);
-
- if ((i >= sockets) || (sockets == 0))
- return -ENODEV;
- if (count < 4)
- return -EINVAL;
- s = &socket_table[i];
- user = file->private_data;
- if (CHECK_USER(user))
- return -EIO;
-
- if (queue_empty(user)) {
- interruptible_sleep_on(&s->queue);
- if (signal_pending(current))
- return -EINTR;
- }
- return put_user(get_queued_event(user), (int *)buf) ? -EFAULT : 4;
- } /* ds_read */
- /*====================================================================*/
- static ssize_t ds_write(struct file *file, const char *buf,
- size_t count, loff_t *ppos)
- {
- socket_t i = MINOR(file->f_dentry->d_inode->i_rdev);
- socket_info_t *s;
- user_info_t *user;
- DEBUG(2, "ds_write(socket %d)n", i);
-
- if ((i >= sockets) || (sockets == 0))
- return -ENODEV;
- if (count != 4)
- return -EINVAL;
- if ((file->f_flags & O_ACCMODE) == O_RDONLY)
- return -EBADF;
- s = &socket_table[i];
- user = file->private_data;
- if (CHECK_USER(user))
- return -EIO;
- if (s->req_pending) {
- s->req_pending--;
- get_user(s->req_result, (int *)buf);
- if ((s->req_result != 0) || (s->req_pending == 0))
- wake_up_interruptible(&s->request);
- } else
- return -EIO;
- return 4;
- } /* ds_write */
- /*====================================================================*/
- /* No kernel lock - fine */
- static u_int ds_poll(struct file *file, poll_table *wait)
- {
- socket_t i = MINOR(file->f_dentry->d_inode->i_rdev);
- socket_info_t *s;
- user_info_t *user;
- DEBUG(2, "ds_poll(socket %d)n", i);
-
- if ((i >= sockets) || (sockets == 0))
- return POLLERR;
- s = &socket_table[i];
- user = file->private_data;
- if (CHECK_USER(user))
- return POLLERR;
- poll_wait(file, &s->queue, wait);
- if (!queue_empty(user))
- return POLLIN | POLLRDNORM;
- return 0;
- } /* ds_poll */
- /*====================================================================*/
- static int ds_ioctl(struct inode * inode, struct file * file,
- u_int cmd, u_long arg)
- {
- socket_t i = MINOR(inode->i_rdev);
- socket_info_t *s;
- u_int size;
- int ret, err;
- ds_ioctl_arg_t buf;
- DEBUG(2, "ds_ioctl(socket %d, %#x, %#lx)n", i, cmd, arg);
-
- if ((i >= sockets) || (sockets == 0))
- return -ENODEV;
- s = &socket_table[i];
-
- 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) {
- err = verify_area(VERIFY_READ, (char *)arg, size);
- if (err) {
- DEBUG(3, "ds_ioctl(): verify_read = %dn", err);
- return err;
- }
- }
- if (cmd & IOC_OUT) {
- err = verify_area(VERIFY_WRITE, (char *)arg, size);
- if (err) {
- DEBUG(3, "ds_ioctl(): verify_write = %dn", err);
- return err;
- }
- }
-
- err = ret = 0;
-
- if (cmd & IOC_IN) copy_from_user((char *)&buf, (char *)arg, size);
-
- switch (cmd) {
- case DS_ADJUST_RESOURCE_INFO:
- ret = pcmcia_adjust_resource_info(s->handle, &buf.adjust);
- break;
- case DS_GET_CARD_SERVICES_INFO:
- ret = pcmcia_get_card_services_info(&buf.servinfo);
- break;
- case DS_GET_CONFIGURATION_INFO:
- ret = pcmcia_get_configuration_info(s->handle, &buf.config);
- break;
- case DS_GET_FIRST_TUPLE:
- ret = pcmcia_get_first_tuple(s->handle, &buf.tuple);
- break;
- case DS_GET_NEXT_TUPLE:
- ret = pcmcia_get_next_tuple(s->handle, &buf.tuple);
- break;
- case DS_GET_TUPLE_DATA:
- buf.tuple.TupleData = buf.tuple_parse.data;
- buf.tuple.TupleDataMax = sizeof(buf.tuple_parse.data);
- ret = pcmcia_get_tuple_data(s->handle, &buf.tuple);
- break;
- case DS_PARSE_TUPLE:
- buf.tuple.TupleData = buf.tuple_parse.data;
- ret = pcmcia_parse_tuple(s->handle, &buf.tuple, &buf.tuple_parse.parse);
- break;
- case DS_RESET_CARD:
- ret = pcmcia_reset_card(s->handle, NULL);
- break;
- case DS_GET_STATUS:
- ret = pcmcia_get_status(s->handle, &buf.status);
- break;
- case DS_VALIDATE_CIS:
- ret = pcmcia_validate_cis(s->handle, &buf.cisinfo);
- break;
- case DS_SUSPEND_CARD:
- ret = pcmcia_suspend_card(s->handle, NULL);
- break;
- case DS_RESUME_CARD:
- ret = pcmcia_resume_card(s->handle, NULL);
- break;
- case DS_EJECT_CARD:
- ret = pcmcia_eject_card(s->handle, NULL);
- break;
- case DS_INSERT_CARD:
- ret = pcmcia_insert_card(s->handle, NULL);
- break;
- case DS_ACCESS_CONFIGURATION_REGISTER:
- if ((buf.conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN))
- return -EPERM;
- ret = pcmcia_access_configuration_register(s->handle, &buf.conf_reg);
- break;
- case DS_GET_FIRST_REGION:
- ret = pcmcia_get_first_region(s->handle, &buf.region);
- break;
- case DS_GET_NEXT_REGION:
- ret = pcmcia_get_next_region(s->handle, &buf.region);
- break;
- case DS_GET_FIRST_WINDOW:
- buf.win_info.handle = (window_handle_t)s->handle;
- ret = pcmcia_get_first_window(&buf.win_info.handle, &buf.win_info.window);
- break;
- case DS_GET_NEXT_WINDOW:
- ret = pcmcia_get_next_window(&buf.win_info.handle, &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->handle, &buf.cisdump);
- break;
- case DS_BIND_REQUEST:
- if (!capable(CAP_SYS_ADMIN)) return -EPERM;
- err = bind_request(i, &buf.bind_info);
- break;
- case DS_GET_DEVICE_INFO:
- err = get_device_info(i, &buf.bind_info, 1);
- break;
- case DS_GET_NEXT_DEVICE:
- err = get_device_info(i, &buf.bind_info, 0);
- break;
- case DS_UNBIND_REQUEST:
- err = unbind_request(i, &buf.bind_info);
- break;
- case DS_BIND_MTD:
- if (!suser()) return -EPERM;
- err = bind_mtd(i, &buf.mtd_info);
- break;
- default:
- err = -EINVAL;
- }
-
- if ((err == 0) && (ret != CS_SUCCESS)) {
- DEBUG(2, "ds_ioctl: ret = %dn", 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) copy_to_user((char *)arg, (char *)&buf, size);
-
- 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,
- };
- EXPORT_SYMBOL(register_pccard_driver);
- EXPORT_SYMBOL(unregister_pccard_driver);
- static devfs_handle_t devfs_handle;
- /*====================================================================*/
- int __init init_pcmcia_ds(void)
- {
- client_reg_t client_reg;
- servinfo_t serv;
- bind_req_t bind;
- socket_info_t *s;
- int i, ret;
-
- DEBUG(0, "%sn", version);
-
- /*
- * 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..
- */
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(HZ/10);
- pcmcia_get_card_services_info(&serv);
- if (serv.Revision != CS_RELEASE_CODE) {
- printk(KERN_NOTICE "ds: Card Services release does not match!n");
- return -1;
- }
- if (serv.Count == 0) {
- printk(KERN_NOTICE "ds: no socket drivers loaded!n");
- return -1;
- }
-
- sockets = serv.Count;
- socket_table = kmalloc(sockets*sizeof(socket_info_t), GFP_KERNEL);
- if (!socket_table) return -1;
- for (i = 0, s = socket_table; i < sockets; i++, s++) {
- s->state = 0;
- s->user = NULL;
- s->req_pending = 0;
- init_waitqueue_head(&s->queue);
- init_waitqueue_head(&s->request);
- s->handle = NULL;
- init_timer(&s->removal);
- s->removal.data = i;
- s->removal.function = &handle_removal;
- s->bind = NULL;
- }
-
- /* Set up hotline to Card Services */
- client_reg.dev_info = bind.dev_info = &dev_info;
- client_reg.Attributes = INFO_MASTER_CLIENT;
- client_reg.EventMask =
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_EJECTION_REQUEST | CS_EVENT_INSERTION_REQUEST |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.event_handler = &ds_event;
- client_reg.Version = 0x0210;
- for (i = 0; i < sockets; i++) {
- bind.Socket = i;
- bind.Function = BIND_FN_ALL;
- ret = pcmcia_bind_device(&bind);
- if (ret != CS_SUCCESS) {
- cs_error(NULL, BindDevice, ret);
- break;
- }
- client_reg.event_callback_args.client_data = &socket_table[i];
- ret = pcmcia_register_client(&socket_table[i].handle,
- &client_reg);
- if (ret != CS_SUCCESS) {
- cs_error(NULL, RegisterClient, ret);
- break;
- }
- }
-
- /* 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 Servicesn");
- else {
- major_dev = i;
- devfs_handle = devfs_register(NULL, "pcmcia", DEVFS_FL_DEFAULT,
- major_dev, 0,
- S_IFCHR | S_IRUSR | S_IWUSR,
- &ds_fops, NULL);
- }
- #ifdef CONFIG_PROC_FS
- if (proc_pccard)
- create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL);
- init_status = 0;
- #endif
- return 0;
- }
- #ifdef MODULE
- int __init init_module(void)
- {
- return init_pcmcia_ds();
- }
- void __exit cleanup_module(void)
- {
- int i;
- #ifdef CONFIG_PROC_FS
- if (proc_pccard)
- remove_proc_entry("drivers", proc_pccard);
- #endif
- if (major_dev != -1)
- devfs_unregister_chrdev(major_dev, "pcmcia");
- devfs_unregister(devfs_handle);
- for (i = 0; i < sockets; i++)
- pcmcia_deregister_client(socket_table[i].handle);
- sockets = 0;
- kfree(socket_table);
- }
- #endif