diff options
Diffstat (limited to 'drivers/pcmcia/pcmcia_ioctl.c')
| -rw-r--r-- | drivers/pcmcia/pcmcia_ioctl.c | 1077 |
1 files changed, 0 insertions, 1077 deletions
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c deleted file mode 100644 index d007a2a0383..00000000000 --- a/drivers/pcmcia/pcmcia_ioctl.c +++ /dev/null @@ -1,1077 +0,0 @@ -/* - * 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/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/major.h> -#include <linux/errno.h> -#include <linux/ioctl.h> -#include <linux/proc_fs.h> -#include <linux/poll.h> -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/seq_file.h> -#include <linux/smp_lock.h> -#include <linux/workqueue.h> - -#include <pcmcia/cs_types.h> -#include <pcmcia/cs.h> -#include <pcmcia/cistpl.h> -#include <pcmcia/cisreg.h> -#include <pcmcia/ds.h> -#include <pcmcia/ss.h> - -#include "cs_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_socket *socket; -} user_info_t; - - -static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, - unsigned int function) -{ - struct pcmcia_device *p_dev = NULL; - - mutex_lock(&s->ops_mutex); - list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { - if (p_dev->func == function) { - mutex_unlock(&s->ops_mutex); - return pcmcia_get_dev(p_dev); - } - } - mutex_unlock(&s->ops_mutex); - 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; - -static int proc_read_drivers_callback(struct device_driver *driver, void *_m) -{ - struct seq_file *m = _m; - struct pcmcia_driver *p_drv = container_of(driver, - struct pcmcia_driver, drv); - - seq_printf(m, "%-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 - ); - return 0; -} - -static int pccard_drivers_proc_show(struct seq_file *m, void *v) -{ - return bus_for_each_drv(&pcmcia_bus_type, NULL, - m, proc_read_drivers_callback); -} - -static int pccard_drivers_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, pccard_drivers_proc_show, NULL); -} - -static const struct file_operations pccard_drivers_proc_fops = { - .owner = THIS_MODULE, - .open = pccard_drivers_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; -#endif - - -#ifdef CONFIG_PCMCIA_PROBE - -static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) -{ - int irq; - u32 mask; - - irq = adj->resource.irq.IRQ; - if ((irq < 0) || (irq > 15)) - return -EINVAL; - - if (adj->Action != REMOVE_MANAGED_RESOURCE) - return 0; - - mask = 1 << irq; - - if (!(s->irq_mask & mask)) - return 0; - - s->irq_mask &= ~mask; - - return 0; -} - -#else - -static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) -{ - return 0; -} - -#endif - -static int pcmcia_adjust_resource_info(adjust_t *adj) -{ - struct pcmcia_socket *s; - int ret = -ENOSYS; - - down_read(&pcmcia_socket_list_rwsem); - list_for_each_entry(s, &pcmcia_socket_list, socket_list) { - - if (adj->Resource == RES_IRQ) - ret = adjust_irq(s, adj); - - else if (s->resource_ops->add_io) { - unsigned long begin, end; - - /* you can't use the old interface if the new - * one was used before */ - mutex_lock(&s->ops_mutex); - if ((s->resource_setup_new) && - !(s->resource_setup_old)) { - mutex_unlock(&s->ops_mutex); - continue; - } else if (!(s->resource_setup_old)) - s->resource_setup_old = 1; - - switch (adj->Resource) { - case RES_MEMORY_RANGE: - begin = adj->resource.memory.Base; - end = adj->resource.memory.Base + adj->resource.memory.Size - 1; - if (s->resource_ops->add_mem) - ret = s->resource_ops->add_mem(s, adj->Action, begin, end); - case RES_IO_RANGE: - begin = adj->resource.io.BasePort; - end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; - if (s->resource_ops->add_io) - ret = s->resource_ops->add_io(s, adj->Action, begin, end); - } - if (!ret) { - /* as there's no way we know this is the - * last call to adjust_resource_info, we - * always need to assume this is the latest - * one... */ - s->resource_setup_done = 1; - } - mutex_unlock(&s->ops_mutex); - } - } - up_read(&pcmcia_socket_list_rwsem); - - return ret; -} - - -/** pcmcia_get_window - */ -static int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *wh_out, - window_handle_t wh, win_req_t *req) -{ - pccard_mem_map *win; - window_handle_t w; - - wh--; - if (!s || !(s->state & SOCKET_PRESENT)) - return -ENODEV; - if (wh >= MAX_WIN) - return -EINVAL; - for (w = wh; w < MAX_WIN; w++) - if (s->state & SOCKET_WIN_REQ(w)) - break; - if (w == MAX_WIN) - return -EINVAL; - win = &s->win[w]; - req->Base = win->res->start; - req->Size = win->res->end - win->res->start + 1; - req->AccessSpeed = win->speed; - req->Attributes = 0; - if (win->flags & MAP_ATTRIB) - req->Attributes |= WIN_MEMORY_TYPE_AM; - if (win->flags & MAP_ACTIVE) - req->Attributes |= WIN_ENABLE; - if (win->flags & MAP_16BIT) - req->Attributes |= WIN_DATA_WIDTH_16; - if (win->flags & MAP_USE_WAIT) - req->Attributes |= WIN_USE_WAIT; - - *wh_out = w + 1; - return 0; -} /* pcmcia_get_window */ - - -/** pcmcia_get_mem_page - * - * Change the card address of an already open memory window. - */ -static int pcmcia_get_mem_page(struct pcmcia_socket *skt, window_handle_t wh, - memreq_t *req) -{ - wh--; - if (wh >= MAX_WIN) - return -EINVAL; - - req->Page = 0; - req->CardOffset = skt->win[wh].card_start; - return 0; -} /* pcmcia_get_mem_page */ - - -/** pccard_get_status - * - * Get the current socket state bits. We don't support the latched - * SocketState yet: I haven't seen any point for it. - */ - -static int pccard_get_status(struct pcmcia_socket *s, - struct pcmcia_device *p_dev, - cs_status_t *status) -{ - config_t *c; - int val; - - s->ops->get_status(s, &val); - status->CardState = status->SocketState = 0; - status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; - status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; - status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; - status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; - if (s->state & SOCKET_SUSPEND) - status->CardState |= CS_EVENT_PM_SUSPEND; - if (!(s->state & SOCKET_PRESENT)) - return -ENODEV; - - c = (p_dev) ? p_dev->function_config : NULL; - - if ((c != NULL) && (c->state & CONFIG_LOCKED) && - (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { - u_char reg; - if (c->CardValues & PRESENT_PIN_REPLACE) { - mutex_lock(&s->ops_mutex); - pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); - mutex_unlock(&s->ops_mutex); - status->CardState |= - (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; - status->CardState |= - (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; - status->CardState |= - (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; - status->CardState |= - (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; - } else { - /* No PRR? Then assume we're always ready */ - status->CardState |= CS_EVENT_READY_CHANGE; - } - if (c->CardValues & PRESENT_EXT_STATUS) { - mutex_lock(&s->ops_mutex); - pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); - mutex_unlock(&s->ops_mutex); - status->CardState |= - (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; - } - return 0; - } - status->CardState |= - (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; - status->CardState |= - (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; - status->CardState |= - (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; - status->CardState |= - (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; - return 0; -} /* pccard_get_status */ - -static int pccard_get_configuration_info(struct pcmcia_socket *s, - struct pcmcia_device *p_dev, - config_info_t *config) -{ - config_t *c; - - if (!(s->state & SOCKET_PRESENT)) - return -ENODEV; - - -#ifdef CONFIG_CARDBUS - if (s->state & SOCKET_CARDBUS) { - memset(config, 0, sizeof(config_info_t)); - config->Vcc = s->socket.Vcc; - config->Vpp1 = config->Vpp2 = s->socket.Vpp; - config->Option = s->cb_dev->subordinate->number; - if (s->state & SOCKET_CARDBUS_CONFIG) { - config->Attributes = CONF_VALID_CLIENT; - config->IntType = INT_CARDBUS; - config->AssignedIRQ = s->pcmcia_irq; - if (config->AssignedIRQ) - config->Attributes |= CONF_ENABLE_IRQ; - if (s->io[0].res) { - config->BasePort1 = s->io[0].res->start; - config->NumPorts1 = s->io[0].res->end - - config->BasePort1 + 1; - } - } - return 0; - } -#endif - - if (p_dev) { - c = p_dev->function_config; - config->Function = p_dev->func; - } else { - c = NULL; - config->Function = 0; - } - - if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { - config->Attributes = 0; - config->Vcc = s->socket.Vcc; - config->Vpp1 = config->Vpp2 = s->socket.Vpp; - return 0; - } - - config->Attributes = c->Attributes | CONF_VALID_CLIENT; - config->Vcc = s->socket.Vcc; - config->Vpp1 = config->Vpp2 = s->socket.Vpp; - config->IntType = c->IntType; - config->ConfigBase = c->ConfigBase; - config->Status = c->Status; - config->Pin = c->Pin; - config->Copy = c->Copy; - config->Option = c->Option; - config->ExtStatus = c->ExtStatus; - config->Present = config->CardValues = c->CardValues; - config->IRQAttributes = c->irq.Attributes; - config->AssignedIRQ = s->pcmcia_irq; - config->BasePort1 = c->io.BasePort1; - config->NumPorts1 = c->io.NumPorts1; - config->Attributes1 = c->io.Attributes1; - config->BasePort2 = c->io.BasePort2; - config->NumPorts2 = c->io.NumPorts2; - config->Attributes2 = c->io.Attributes2; - config->IOAddrLines = c->io.IOAddrLines; - - return 0; -} /* pccard_get_configuration_info */ - - -/*====================================================================== - - 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_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_socket *s, bind_info_t *bind_info) -{ - struct pcmcia_driver *p_drv; - struct pcmcia_device *p_dev; - int ret = 0; - - s = pcmcia_get_socket(s); - if (!s) - return -EINVAL; - - pr_debug("bind_request(%d, '%s')\n", s->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; - } - - mutex_lock(&s->ops_mutex); - 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". */ - mutex_unlock(&s->ops_mutex); - bind_info->instance = p_dev; - ret = -EBUSY; - goto err_put_module; - } else { - /* the correct driver managed to bind - * itself magically to the correct - * device. */ - mutex_unlock(&s->ops_mutex); - 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! */ - mutex_unlock(&s->ops_mutex); - goto rescan; - } - } - } - mutex_unlock(&s->ops_mutex); - - 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. - */ - mutex_lock(&s->skt_mutex); - ret = bus_rescan_devices(&pcmcia_bus_type); - mutex_unlock(&s->skt_mutex); - if (ret) - goto err_put_module; - - /* 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_socket(s); - - return ret; -} /* bind_request */ - -#ifdef CONFIG_CARDBUS - -static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) -{ - if (!s || !(s->state & SOCKET_CARDBUS)) - return NULL; - - return s->cb_dev->subordinate; -} -#endif - -static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) -{ - struct pcmcia_device *p_dev; - struct pcmcia_driver *p_drv; - 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); - 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 - - mutex_lock(&s->ops_mutex); - 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; - } - } - mutex_unlock(&s->ops_mutex); - return -ENODEV; - - found: - mutex_unlock(&s->ops_mutex); - - p_drv = to_pcmcia_drv(p_dev->dev.driver); - if (p_drv && !p_dev->_locked) { - ret = -EAGAIN; - goto err_put; - } - - if (!first) { - ret = -ENODEV; - goto err_put; - } - - strlcpy(bind_info->name, dev_name(&p_dev->dev), DEV_NAME_LEN); - bind_info->next = NULL; - - 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_socket *s; - user_info_t *user; - static int warning_printed; - int ret = 0; - - pr_debug("ds_open(socket %d)\n", i); - - lock_kernel(); - s = pcmcia_get_socket_by_nr(i); - if (!s) { - ret = -ENODEV; - goto out; - } - s = pcmcia_get_socket(s); - if (!s) { - ret = -ENODEV; - goto out; - } - - if ((file->f_flags & O_ACCMODE) != O_RDONLY) { - if (s->pcmcia_state.busy) { - pcmcia_put_socket(s); - ret = -EBUSY; - goto out; - } - else - s->pcmcia_state.busy = 1; - } - - user = kmalloc(sizeof(user_info_t), GFP_KERNEL); - if (!user) { - pcmcia_put_socket(s); - ret = -ENOMEM; - goto out; - } - 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 (!warning_printed) { - printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " - "usage from process: %s.\n", current->comm); - printk(KERN_INFO "pcmcia: This interface will soon be removed from " - "the kernel; please expect breakage unless you upgrade " - "to new tools.\n"); - printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" - "utils/kernel/pcmcia/pcmcia.html for details.\n"); - warning_printed = 1; - } - - if (atomic_read(&s->present)) - queue_event(user, CS_EVENT_CARD_INSERTION); -out: - unlock_kernel(); - return ret; -} /* ds_open */ - -/*====================================================================*/ - -static int ds_release(struct inode *inode, struct file *file) -{ - struct pcmcia_socket *s; - user_info_t *user, **link; - - pr_debug("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->pcmcia_state.busy = 0; - - 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_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_socket *s; - user_info_t *user; - int ret; - - pr_debug("ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); - - if (count < 4) - return -EINVAL; - - user = file->private_data; - if (CHECK_USER(user)) - return -EIO; - - s = user->socket; - 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) -{ - pr_debug("ds_write(socket %d)\n", iminor(file->f_path.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_socket *s; - user_info_t *user; - - pr_debug("ds_poll(socket %d)\n", iminor(file->f_path.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 */ - -/*====================================================================*/ - -static int ds_ioctl(struct file *file, u_int cmd, u_long arg) -{ - struct pcmcia_socket *s; - void __user *uarg = (char __user *)arg; - u_int size; - int ret, err; - ds_ioctl_arg_t *buf; - user_info_t *user; - - pr_debug("ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); - - user = file->private_data; - if (CHECK_USER(user)) - return -EIO; - - s = user->socket; - - 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)) { - pr_debug("ds_ioctl(): verify_read = %d\n", -EFAULT); - return -EFAULT; - } - } - if (cmd & IOC_OUT) { - if (!access_ok(VERIFY_WRITE, uarg, size)) { - pr_debug("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) { - if (__copy_from_user((char *)buf, uarg, size)) { - err = -EFAULT; - goto free_out; - } - } - - switch (cmd) { - case DS_ADJUST_RESOURCE_INFO: - ret = pcmcia_adjust_resource_info(&buf->adjust); - break; - case DS_GET_CONFIGURATION_INFO: - if (buf->config.Function && - (buf->config.Function >= s->functions)) - ret = -EINVAL; - else { - struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); - ret = pccard_get_configuration_info(s, p_dev, &buf->config); - pcmcia_put_dev(p_dev); - } - break; - case DS_GET_FIRST_TUPLE: - mutex_lock(&s->skt_mutex); - pcmcia_validate_mem(s); - mutex_unlock(&s->skt_mutex); - ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); - break; - case DS_GET_NEXT_TUPLE: - ret = pccard_get_next_tuple(s, 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, &buf->tuple); - break; - case DS_PARSE_TUPLE: - buf->tuple.TupleData = buf->tuple_parse.data; - ret = pcmcia_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); - break; - case DS_RESET_CARD: - ret = pcmcia_reset_card(s); - break; - case DS_GET_STATUS: - if (buf->status.Function && - (buf->status.Function >= s->functions)) - ret = -EINVAL; - else { - struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); - ret = pccard_get_status(s, p_dev, &buf->status); - pcmcia_put_dev(p_dev); - } - break; - case DS_VALIDATE_CIS: - mutex_lock(&s->skt_mutex); - pcmcia_validate_mem(s); - mutex_unlock(&s->skt_mutex); - ret = pccard_validate_cis(s, &buf->cisinfo.Chains); - break; - case DS_SUSPEND_CARD: - pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); - break; - case DS_RESUME_CARD: - pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); - break; - case DS_EJECT_CARD: - pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); - break; - case DS_INSERT_CARD: - pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); - break; - case DS_ACCESS_CONFIGURATION_REGISTER: - if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto free_out; - } - - ret = -EINVAL; - - if (!(buf->conf_reg.Function && - (buf->conf_reg.Function >= s->functions))) { - struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); - if (p_dev) { - ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); - pcmcia_put_dev(p_dev); - } - } - 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 { - printk_once(KERN_WARNING - "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); - printk_once(KERN_WARNING "MTD handling any more.\n"); - } - err = -EINVAL; - goto free_out; - break; - case DS_GET_FIRST_WINDOW: - ret = pcmcia_get_window(s, &buf->win_info.handle, 1, - &buf->win_info.window); - break; - case DS_GET_NEXT_WINDOW: - ret = pcmcia_get_window(s, &buf->win_info.handle, - buf->win_info.handle + 1, &buf->win_info.window); - break; - case DS_GET_MEM_PAGE: - ret = pcmcia_get_mem_page(s, buf->win_info.handle, - &buf->win_info.map); - break; - case DS_REPLACE_CIS: - ret = pcmcia_replace_cis(s, buf->cisdump.Data, buf->cisdump.Length); - 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 != 0)) { - pr_debug("ds_ioctl: ret = %d\n", ret); - switch (ret) { - case -ENODEV: - case -EINVAL: - case -EBUSY: - case -ENOSYS: - err = ret; - break; - case -ENOMEM: - err = -ENOSPC; break; - case -ENOSPC: - err = -ENODATA; 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 long ds_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - int ret; - - lock_kernel(); - ret = ds_ioctl(file, cmd, arg); - unlock_kernel(); - - return ret; -} - - -/*====================================================================*/ - -static const struct file_operations ds_fops = { - .owner = THIS_MODULE, - .open = ds_open, - .release = ds_release, - .unlocked_ioctl = ds_unlocked_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 < 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("bus/pccard", NULL); - if (proc_pccard) - proc_create("drivers", 0, proc_pccard, &pccard_drivers_proc_fops); -#endif -} - - -void __exit pcmcia_cleanup_ioctl(void) -{ -#ifdef CONFIG_PROC_FS - if (proc_pccard) { - remove_proc_entry("drivers", proc_pccard); - remove_proc_entry("bus/pccard", NULL); - } -#endif - if (major_dev != -1) - unregister_chrdev(major_dev, "pcmcia"); -} |