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[PATCH] pcmcia: move PCMCIA ioctl to a separate file

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Move all PCMCIA_IOCTL-related code to a different file.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

From: Richard Purdie <rpurdie@rpsys.net>

The pcmcia-move-pcmcia-ioctl-to-a-separate-file patch was corrupted in -mm2
causing this problem.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dominik Brodowski 2005-06-27 16:28:47 -07:00 committed by Linus Torvalds
parent 9a5555b81f
commit e7a480d229
4 changed files with 850 additions and 780 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/pcmcia/Makefile
View file

@ -11,6 +11,7 @@ pcmcia_core-$(CONFIG_CARDBUS) += cardbus.o
obj-$(CONFIG_PCCARD) += pcmcia_core.o
pcmcia-y += ds.o pcmcia_compat.o
pcmcia-$(CONFIG_PCMCIA_IOCTL) += pcmcia_ioctl.o
obj-$(CONFIG_PCMCIA) += pcmcia.o
obj-$(CONFIG_PCCARD_NONSTATIC) += rsrc_nonstatic.o

795
drivers/pcmcia/ds.c
View file

@ -50,6 +50,7 @@
#include <pcmcia/ss.h>
#include "cs_internal.h"
#include "ds_internal.h"
/*====================================================================*/
@ -60,7 +61,7 @@ MODULE_DESCRIPTION("PCMCIA Driver Services");
MODULE_LICENSE("GPL");
#ifdef DEBUG
static int ds_pc_debug;
int ds_pc_debug;
module_param_named(pc_debug, ds_pc_debug, int, 0644);
@ -72,57 +73,7 @@ module_param_named(pc_debug, ds_pc_debug, int, 0644);
#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 */
u8 device_add_pending;
struct work_struct device_add;
};
static spinlock_t pcmcia_dev_list_lock;
static struct bus_type pcmcia_bus_type;
#define DS_SOCKET_PRESENT 0x01
#define DS_SOCKET_BUSY 0x02
#define DS_SOCKET_REMOVAL_PENDING 0x10
#define DS_SOCKET_DEAD 0x80
/*====================================================================*/
#ifdef CONFIG_PCMCIA_IOCTL
static int major_dev = -1;
static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr);
static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info);
#endif
spinlock_t pcmcia_dev_list_lock;
static int unbind_request(struct pcmcia_bus_socket *s);
@ -362,19 +313,19 @@ static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filenam
/*======================================================================*/
static void pcmcia_release_bus_socket(struct kref *refcount)
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)
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)
struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s)
{
kref_get(&s->refcount);
return (s);
@ -414,44 +365,10 @@ void pcmcia_unregister_driver(struct pcmcia_driver *driver)
}
EXPORT_SYMBOL(pcmcia_unregister_driver);
#ifdef CONFIG_PCMCIA_IOCTL
#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
#endif
/* pcmcia_device handling */
static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
{
struct device *tmp_dev;
tmp_dev = get_device(&p_dev->dev);
@ -460,7 +377,7 @@ static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
return to_pcmcia_dev(tmp_dev);
}
static void pcmcia_put_dev(struct pcmcia_device *p_dev)
void pcmcia_put_dev(struct pcmcia_device *p_dev)
{
if (p_dev)
put_device(&p_dev->dev);
@ -605,7 +522,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
*/
static DECLARE_MUTEX(device_add_lock);
static struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function)
struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function)
{
struct pcmcia_device *p_dev;
unsigned long flags;
@ -997,47 +914,6 @@ static struct device_attribute pcmcia_dev_attrs[] = {
};
/*======================================================================
These manage a ring buffer of events pending for one user process
======================================================================*/
#ifdef CONFIG_PCMCIA_IOCTL
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);
}
#else
static inline void handle_event(struct pcmcia_bus_socket *s, event_t event) { return; }
static inline int handle_request(struct pcmcia_bus_socket *s, event_t event) { return CS_SUCCESS; }
#endif
/*======================================================================
The card status event handler.
@ -1131,128 +1007,6 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
} /* 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.
======================================================================*/
#ifdef CONFIG_PCMCIA_IOCTL
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;
/* if a driver is already running, we can abort */
if (p_dev->dev.driver)
goto err_put_module;
/*
* 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 */
#endif
int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
{
@ -1349,100 +1103,6 @@ int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
EXPORT_SYMBOL(pcmcia_register_client);
/*====================================================================*/
#ifdef CONFIG_PCMCIA_IOCTL
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 */
#endif
/*====================================================================*/
/* unbind _all_ devices attached to a given pcmcia_bus_socket. The
* drivers have been called with EVENT_CARD_REMOVAL before.
*/
@ -1507,377 +1167,6 @@ int pcmcia_deregister_client(client_handle_t handle)
} /* deregister_client */
EXPORT_SYMBOL(pcmcia_deregister_client);
/*======================================================================
The user-mode PC Card device interface
======================================================================*/
#ifdef CONFIG_PCMCIA_IOCTL
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,
};
#endif
static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
{
struct pcmcia_socket *socket = class_get_devdata(class_dev);
@ -1905,7 +1194,9 @@ static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
*/
msleep(250);
#ifdef CONFIG_PCMCIA_IOCTL
init_waitqueue_head(&s->queue);
#endif
INIT_LIST_HEAD(&s->devices_list);
INIT_WORK(&s->device_add, pcmcia_delayed_add_pseudo_device, s);
@ -1952,7 +1243,7 @@ static struct class_interface pcmcia_bus_interface = {
};
static struct bus_type pcmcia_bus_type = {
struct bus_type pcmcia_bus_type = {
.name = "pcmcia",
.hotplug = pcmcia_bus_hotplug,
.match = pcmcia_bus_match,
@ -1962,30 +1253,12 @@ static struct bus_type pcmcia_bus_type = {
static int __init init_pcmcia_bus(void)
{
#ifdef CONFIG_PCMCIA_IOCTL
int i;
#endif
spin_lock_init(&pcmcia_dev_list_lock);
bus_register(&pcmcia_bus_type);
class_interface_register(&pcmcia_bus_interface);
#ifdef CONFIG_PCMCIA_IOCTL
/* Set up character device for user mode clients */
i = register_chrdev(0, "pcmcia", &ds_fops);
if (i < 0)
printk(KERN_NOTICE "unable to find a free device # for "
"Driver Services (error=%d)\n", i);
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
#endif
pcmcia_setup_ioctl();
return 0;
}
@ -1995,51 +1268,13 @@ fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
static void __exit exit_pcmcia_bus(void)
{
class_interface_unregister(&pcmcia_bus_interface);
pcmcia_cleanup_ioctl();
#ifdef CONFIG_PCMCIA_IOCTL
#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");
#endif
class_interface_unregister(&pcmcia_bus_interface);
bus_unregister(&pcmcia_bus_type);
}
module_exit(exit_pcmcia_bus);
/* helpers for backwards-compatible functions */
#ifdef CONFIG_PCMCIA_IOCTL
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);
}
#endif
MODULE_ALIAS("ds");

55
drivers/pcmcia/ds_internal.h Normal file
View file

@ -0,0 +1,55 @@
/* ds_internal.h - internal header for 16-bit PCMCIA devices management */
struct user_info_t;
/* Socket state information */
struct pcmcia_bus_socket {
struct kref refcount;
struct pcmcia_callback callback;
int state;
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 */
u8 device_add_pending;
struct work_struct device_add;
#ifdef CONFIG_PCMCIA_IOCTL
struct user_info_t *user;
wait_queue_head_t queue;
#endif
};
extern spinlock_t pcmcia_dev_list_lock;
extern struct bus_type pcmcia_bus_type;
#define DS_SOCKET_PRESENT 0x01
#define DS_SOCKET_BUSY 0x02
#define DS_SOCKET_DEAD 0x80
extern struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev);
extern void pcmcia_put_dev(struct pcmcia_device *p_dev);
struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s);
void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s);
struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function);
#ifdef CONFIG_PCMCIA_IOCTL
extern void __init pcmcia_setup_ioctl(void);
extern void __exit pcmcia_cleanup_ioctl(void);
extern void handle_event(struct pcmcia_bus_socket *s, event_t event);
extern int handle_request(struct pcmcia_bus_socket *s, event_t event);
#else
static inline void __init pcmcia_setup_ioctl(void) { return; }
static inline void __init pcmcia_cleanup_ioctl(void) { return; }
static inline void handle_event(struct pcmcia_bus_socket *s, event_t event) { return; }
static inline int handle_request(struct pcmcia_bus_socket *s, event_t event) { return CS_SUCCESS; }
#endif

779
drivers/pcmcia/pcmcia_ioctl.c Normal file
View file

@ -0,0 +1,779 @@
/*
* pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl
*
* 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
*/
/*
* This file will go away soon.
*/
#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 <linux/crc32.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"
#include "ds_internal.h"
static int major_dev = -1;
/* 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;
#ifdef DEBUG
extern int ds_pc_debug;
#define cs_socket_name(skt) ((skt)->dev.class_id)
#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
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);
}
#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
/*======================================================================
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;
}
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);
}
/*======================================================================
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;
/* if a driver is already running, we can abort */
if (p_dev->dev.driver)
goto err_put_module;
/*
* 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 */
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 */
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,
};
void __init pcmcia_setup_ioctl(void) {
int i;
/* 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
}
void __exit pcmcia_cleanup_ioctl(void) {
#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");
}