diff options
Diffstat (limited to 'drivers/char/drm/drm_ioctl.c')
-rw-r--r-- | drivers/char/drm/drm_ioctl.c | 168 |
1 files changed, 86 insertions, 82 deletions
diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c index d2ed3ba5aca..9b0feba6b06 100644 --- a/drivers/char/drm/drm_ioctl.c +++ b/drivers/char/drm/drm_ioctl.c @@ -1,5 +1,5 @@ /** - * \file drm_ioctl.h + * \file drm_ioctl.c * IOCTL processing for DRM * * \author Rickard E. (Rik) Faith <faith@valinux.com> @@ -40,7 +40,7 @@ /** * Get the bus id. - * + * * \param inode device inode. * \param filp file pointer. * \param cmd command. @@ -50,12 +50,12 @@ * Copies the bus id from drm_device::unique into user space. */ int drm_getunique(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_unique_t __user *argp = (void __user *)arg; - drm_unique_t u; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_unique_t __user *argp = (void __user *)arg; + drm_unique_t u; if (copy_from_user(&u, argp, sizeof(u))) return -EFAULT; @@ -71,7 +71,7 @@ int drm_getunique(struct inode *inode, struct file *filp, /** * Set the bus id. - * + * * \param inode device inode. * \param filp file pointer. * \param cmd command. @@ -84,34 +84,39 @@ int drm_getunique(struct inode *inode, struct file *filp, * version 1.1 or greater. */ int drm_setunique(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_unique_t u; - int domain, bus, slot, func, ret; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_unique_t u; + int domain, bus, slot, func, ret; - if (dev->unique_len || dev->unique) return -EBUSY; + if (dev->unique_len || dev->unique) + return -EBUSY; - if (copy_from_user(&u, (drm_unique_t __user *)arg, sizeof(u))) + if (copy_from_user(&u, (drm_unique_t __user *) arg, sizeof(u))) return -EFAULT; - if (!u.unique_len || u.unique_len > 1024) return -EINVAL; + if (!u.unique_len || u.unique_len > 1024) + return -EINVAL; dev->unique_len = u.unique_len; - dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER); - if(!dev->unique) return -ENOMEM; + dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER); + if (!dev->unique) + return -ENOMEM; if (copy_from_user(dev->unique, u.unique, dev->unique_len)) return -EFAULT; dev->unique[dev->unique_len] = '\0'; - dev->devname = drm_alloc(strlen(dev->driver->pci_driver.name) + strlen(dev->unique) + 2, - DRM_MEM_DRIVER); + dev->devname = + drm_alloc(strlen(dev->driver->pci_driver.name) + + strlen(dev->unique) + 2, DRM_MEM_DRIVER); if (!dev->devname) return -ENOMEM; - sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, dev->unique); + sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, + dev->unique); /* Return error if the busid submitted doesn't match the device's actual * busid. @@ -121,18 +126,16 @@ int drm_setunique(struct inode *inode, struct file *filp, return DRM_ERR(EINVAL); domain = bus >> 8; bus &= 0xff; - + if ((domain != dev->pci_domain) || (bus != dev->pci_bus) || - (slot != dev->pci_slot) || - (func != dev->pci_func)) + (slot != dev->pci_slot) || (func != dev->pci_func)) return -EINVAL; return 0; } -static int -drm_set_busid(drm_device_t *dev) +static int drm_set_busid(drm_device_t * dev) { if (dev->unique != NULL) return EBUSY; @@ -143,19 +146,20 @@ drm_set_busid(drm_device_t *dev) return ENOMEM; snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d", - dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); + dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); - dev->devname = drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len + 2, - DRM_MEM_DRIVER); + dev->devname = + drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len + + 2, DRM_MEM_DRIVER); if (dev->devname == NULL) return ENOMEM; - sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, dev->unique); + sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, + dev->unique); return 0; } - /** * Get a mapping information. * @@ -163,23 +167,23 @@ drm_set_busid(drm_device_t *dev) * \param filp file pointer. * \param cmd command. * \param arg user argument, pointing to a drm_map structure. - * + * * \return zero on success or a negative number on failure. * * Searches for the mapping with the specified offset and copies its information * into userspace */ -int drm_getmap( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) +int drm_getmap(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_map_t __user *argp = (void __user *)arg; - drm_map_t map; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_map_t __user *argp = (void __user *)arg; + drm_map_t map; drm_map_list_t *r_list = NULL; struct list_head *list; - int idx; - int i; + int idx; + int i; if (copy_from_user(&map, argp, sizeof(map))) return -EFAULT; @@ -193,26 +197,27 @@ int drm_getmap( struct inode *inode, struct file *filp, i = 0; list_for_each(list, &dev->maplist->head) { - if(i == idx) { + if (i == idx) { r_list = list_entry(list, drm_map_list_t, head); break; } i++; } - if(!r_list || !r_list->map) { + if (!r_list || !r_list->map) { up(&dev->struct_sem); return -EINVAL; } map.offset = r_list->map->offset; - map.size = r_list->map->size; - map.type = r_list->map->type; - map.flags = r_list->map->flags; - map.handle = (void *)(unsigned long) r_list->user_token; - map.mtrr = r_list->map->mtrr; + map.size = r_list->map->size; + map.type = r_list->map->type; + map.flags = r_list->map->flags; + map.handle = (void *)(unsigned long)r_list->user_token; + map.mtrr = r_list->map->mtrr; up(&dev->struct_sem); - if (copy_to_user(argp, &map, sizeof(map))) return -EFAULT; + if (copy_to_user(argp, &map, sizeof(map))) + return -EFAULT; return 0; } @@ -223,83 +228,81 @@ int drm_getmap( struct inode *inode, struct file *filp, * \param filp file pointer. * \param cmd command. * \param arg user argument, pointing to a drm_client structure. - * + * * \return zero on success or a negative number on failure. * * Searches for the client with the specified index and copies its information * into userspace */ -int drm_getclient( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) +int drm_getclient(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; drm_client_t __user *argp = (void __user *)arg; drm_client_t client; - drm_file_t *pt; - int idx; - int i; + drm_file_t *pt; + int idx; + int i; if (copy_from_user(&client, argp, sizeof(client))) return -EFAULT; idx = client.idx; down(&dev->struct_sem); - for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next) - ; + for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next) ; if (!pt) { up(&dev->struct_sem); return -EINVAL; } - client.auth = pt->authenticated; - client.pid = pt->pid; - client.uid = pt->uid; + client.auth = pt->authenticated; + client.pid = pt->pid; + client.uid = pt->uid; client.magic = pt->magic; - client.iocs = pt->ioctl_count; + client.iocs = pt->ioctl_count; up(&dev->struct_sem); - if (copy_to_user((drm_client_t __user *)arg, &client, sizeof(client))) + if (copy_to_user((drm_client_t __user *) arg, &client, sizeof(client))) return -EFAULT; return 0; } -/** - * Get statistics information. - * +/** + * Get statistics information. + * * \param inode device inode. * \param filp file pointer. * \param cmd command. * \param arg user argument, pointing to a drm_stats structure. - * + * * \return zero on success or a negative number on failure. */ -int drm_getstats( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) +int drm_getstats(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_stats_t stats; - int i; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_stats_t stats; + int i; memset(&stats, 0, sizeof(stats)); - + down(&dev->struct_sem); for (i = 0; i < dev->counters; i++) { if (dev->types[i] == _DRM_STAT_LOCK) stats.data[i].value - = (dev->lock.hw_lock - ? dev->lock.hw_lock->lock : 0); - else + = (dev->lock.hw_lock ? dev->lock.hw_lock->lock : 0); + else stats.data[i].value = atomic_read(&dev->counts[i]); - stats.data[i].type = dev->types[i]; + stats.data[i].type = dev->types[i]; } - + stats.count = dev->counters; up(&dev->struct_sem); - if (copy_to_user((drm_stats_t __user *)arg, &stats, sizeof(stats))) + if (copy_to_user((drm_stats_t __user *) arg, &stats, sizeof(stats))) return -EFAULT; return 0; } @@ -352,7 +355,8 @@ int drm_setversion(DRM_IOCTL_ARGS) if (sv.drm_dd_major != -1) { if (sv.drm_dd_major != version.version_major || - sv.drm_dd_minor < 0 || sv.drm_dd_minor > version.version_minor) + sv.drm_dd_minor < 0 + || sv.drm_dd_minor > version.version_minor) return EINVAL; if (dev->driver->set_version) @@ -363,7 +367,7 @@ int drm_setversion(DRM_IOCTL_ARGS) /** No-op ioctl. */ int drm_noop(struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg) + unsigned long arg) { DRM_DEBUG("\n"); return 0; |