diff options
Diffstat (limited to 'linux/pcmcia-cs/modules/ds.c')
| -rw-r--r-- | linux/pcmcia-cs/modules/ds.c | 1004 |
1 files changed, 1004 insertions, 0 deletions
diff --git a/linux/pcmcia-cs/modules/ds.c b/linux/pcmcia-cs/modules/ds.c new file mode 100644 index 0000000..b6eb10e --- /dev/null +++ b/linux/pcmcia-cs/modules/ds.c @@ -0,0 +1,1004 @@ +/*====================================================================== + + PC Card Driver Services + + ds.c 1.115 2002/10/12 19:03:44 + + 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/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/timer.h> +#include <linux/ioctl.h> +#include <linux/proc_fs.h> +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,23)) +#include <linux/poll.h> +#endif + +#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> + +/*====================================================================*/ + +/* 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") + +#ifdef PCMCIA_DEBUG +INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) +static const char *version = +"ds.c 1.115 2002/10/12 19:03:44 (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 }; + CardServices(ReportError, 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 HAS_PROC_BUS +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 %d\n", 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 = CardServices(BindMTD, &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%x\n", + (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; + 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; + } + b = kmalloc(sizeof(socket_bind_t), GFP_KERNEL); + if (!b) + return -ENOMEM; + + bind_req.Socket = i; + bind_req.Function = bind_info->function; + bind_req.dev_info = &driver->dev_info; + ret = CardServices(BindDevice, &bind_req); + if (ret != CS_SUCCESS) { + cs_error(NULL, BindDevice, ret); + printk(KERN_NOTICE "ds: unable to bind '%s' to socket %d\n", + (char *)dev_info, i); + kfree(b); + return -ENODEV; + } + + /* Add binding to list for this socket */ + driver->use_count++; + b->driver = driver; + b->function = bind_info->function; + b->instance = NULL; + b->next = s->bind; + s->bind = b; + + 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; + + 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)) + 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; + + strncpy(bind_info->name, node->dev_name, DEV_NAME_LEN); + bind_info->name[DEV_NAME_LEN-1] = '\0'; + 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; + } + + MOD_INC_USE_COUNT; + user = kmalloc(sizeof(user_info_t), GFP_KERNEL); + if (!user) { + MOD_DEC_USE_COUNT; + 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 FS_RELEASE_T 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 (FS_RELEASE_T)0; + s = &socket_table[i]; + user = file->private_data; + if (CHECK_USER(user)) + return (FS_RELEASE_T)0; + + /* 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) + return (FS_RELEASE_T)0; + *link = user->next; + user->user_magic = 0; + kfree(user); + + MOD_DEC_USE_COUNT; + return (FS_RELEASE_T)0; +} /* ds_release */ + +/*====================================================================*/ + +static ssize_t ds_read FOPS(struct inode *inode, + struct file *file, char *buf, + size_t count, loff_t *ppos) +{ + socket_t i = MINOR(F_INODE(file)->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; + } + put_user(get_queued_event(user), (int *)buf); + return 4; +} /* ds_read */ + +/*====================================================================*/ + +static ssize_t ds_write FOPS(struct inode *inode, + struct file *file, const char *buf, + size_t count, loff_t *ppos) +{ + socket_t i = MINOR(F_INODE(file)->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 */ + +/*====================================================================*/ + +#if (LINUX_VERSION_CODE < VERSION(2,1,23)) + +static int ds_select(struct inode *inode, struct file *file, + int sel_type, select_table *wait) +{ + socket_t i = MINOR(inode->i_rdev); + socket_info_t *s; + user_info_t *user; + + DEBUG(2, "ds_select(socket %d)\n", i); + + if ((i >= sockets) || (sockets == 0)) + return -ENODEV; + s = &socket_table[i]; + user = file->private_data; + if (CHECK_USER(user)) + return -EIO; + if (sel_type != SEL_IN) + return 0; + if (!queue_empty(user)) + return 1; + select_wait(&s->queue, wait); + return 0; +} /* ds_select */ + +#else + +static u_int ds_poll(struct file *file, poll_table *wait) +{ + socket_t i = MINOR(F_INODE(file)->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 */ + +#endif + +/*====================================================================*/ + +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 = %d\n", err); + return err; + } + } + if (cmd & IOC_OUT) { + err = verify_area(VERIFY_WRITE, (char *)arg, size); + if (err) { + DEBUG(3, "ds_ioctl(): verify_write = %d\n", 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 = CardServices(AdjustResourceInfo, s->handle, &buf.adjust); + break; + case DS_GET_CARD_SERVICES_INFO: + ret = CardServices(GetCardServicesInfo, &buf.servinfo); + break; + case DS_GET_CONFIGURATION_INFO: + ret = CardServices(GetConfigurationInfo, s->handle, &buf.config); + break; + case DS_GET_FIRST_TUPLE: + ret = CardServices(GetFirstTuple, s->handle, &buf.tuple); + break; + case DS_GET_NEXT_TUPLE: + ret = CardServices(GetNextTuple, 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 = CardServices(GetTupleData, s->handle, &buf.tuple); + break; + case DS_PARSE_TUPLE: + buf.tuple.TupleData = buf.tuple_parse.data; + ret = CardServices(ParseTuple, s->handle, &buf.tuple, + &buf.tuple_parse.parse); + break; + case DS_RESET_CARD: + ret = CardServices(ResetCard, s->handle, NULL); + break; + case DS_GET_STATUS: + ret = CardServices(GetStatus, s->handle, &buf.status); + break; + case DS_VALIDATE_CIS: + ret = CardServices(ValidateCIS, s->handle, &buf.cisinfo); + break; + case DS_SUSPEND_CARD: + ret = CardServices(SuspendCard, s->handle, NULL); + break; + case DS_RESUME_CARD: + ret = CardServices(ResumeCard, s->handle, NULL); + break; + case DS_EJECT_CARD: + ret = CardServices(EjectCard, s->handle, NULL); + break; + case DS_INSERT_CARD: + ret = CardServices(InsertCard, s->handle, NULL); + break; + case DS_ACCESS_CONFIGURATION_REGISTER: + if ((buf.conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) + return -EPERM; + ret = CardServices(AccessConfigurationRegister, s->handle, + &buf.conf_reg); + break; + case DS_GET_FIRST_REGION: + ret = CardServices(GetFirstRegion, s->handle, &buf.region); + break; + case DS_GET_NEXT_REGION: + ret = CardServices(GetNextRegion, s->handle, &buf.region); + break; + case DS_GET_FIRST_WINDOW: + buf.win_info.handle = (window_handle_t)s->handle; + ret = CardServices(GetFirstWindow, &buf.win_info.handle, + &buf.win_info.window); + break; + case DS_GET_NEXT_WINDOW: + ret = CardServices(GetNextWindow, &buf.win_info.handle, + &buf.win_info.window); + break; + case DS_GET_MEM_PAGE: + ret = CardServices(GetMemPage, buf.win_info.handle, + &buf.win_info.map); + break; + case DS_REPLACE_CIS: + ret = CardServices(ReplaceCIS, 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 (!capable(CAP_SYS_ADMIN)) return -EPERM; + err = bind_mtd(i, &buf.mtd_info); + break; + default: + err = -EINVAL; + } + + if ((err == 0) && (ret != CS_SUCCESS)) { + DEBUG(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) copy_to_user((char *)arg, (char *)&buf, size); + + return err; +} /* ds_ioctl */ + +/*====================================================================*/ + +static struct file_operations ds_fops = { + open: ds_open, + release: ds_release, + ioctl: ds_ioctl, + read: ds_read, + write: ds_write, +#if (LINUX_VERSION_CODE < VERSION(2,1,23)) + select: ds_select +#else + poll: ds_poll +#endif +}; + +#if (LINUX_VERSION_CODE <= VERSION(2,1,17)) + +#undef CONFIG_MODVERSIONS +static struct symbol_table ds_symtab = { +#include <linux/symtab_begin.h> +#undef X +#define X(sym) { (void *)&sym, SYMBOL_NAME_STR(sym) } + X(register_pccard_driver), + X(unregister_pccard_driver), +#include <linux/symtab_end.h> +}; + +#else + +EXPORT_SYMBOL(register_pccard_driver); +EXPORT_SYMBOL(unregister_pccard_driver); + +#endif + +/*====================================================================*/ + +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, "%s\n", version); + + CardServices(GetCardServicesInfo, &serv); + if (serv.Revision != CS_RELEASE_CODE) { + printk(KERN_NOTICE "ds: Card Services release does not match!\n"); + return -EINVAL; + } + 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 = CardServices(BindDevice, &bind); + if (ret != CS_SUCCESS) { + cs_error(NULL, BindDevice, ret); + break; + } + client_reg.event_callback_args.client_data = &socket_table[i]; + ret = CardServices(RegisterClient, &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 Services\n"); + else + major_dev = i; + register_symtab(&ds_symtab); + +#ifdef HAS_PROC_BUS + 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 HAS_PROC_BUS + if (proc_pccard) + remove_proc_entry("drivers", proc_pccard); +#endif + if (major_dev != -1) + unregister_chrdev(major_dev, "pcmcia"); + for (i = 0; i < sockets; i++) + CardServices(DeregisterClient, socket_table[i].handle); + sockets = 0; + kfree(socket_table); +} + +#endif |