From 7ab984012a879a53abb56abfe03b0c686f42b281 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 10 Jul 2005 16:56:52 +1000 Subject: drm: update some function so a driver can call them This patch splits some ioctl functions so that they can be called in-kernel by a DRM driver. The driver will use them later. From: Ian Romanick Signed-off-by: Dave Airlie --- drivers/char/drm/drm_bufs.c | 84 +++++++++++++++++++++++++++++++-------------- 1 file changed, 59 insertions(+), 25 deletions(-) (limited to 'drivers/char/drm/drm_bufs.c') diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c index be54efbefe8..cd4636f7f18 100644 --- a/drivers/char/drm/drm_bufs.c +++ b/drivers/char/drm/drm_bufs.c @@ -82,26 +82,22 @@ static unsigned int map32_handle = 0x10000000; * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where * applicable and if supported by the kernel. */ -int drm_addmap( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) +int drm_addmap(drm_device_t * dev, unsigned int offset, + unsigned int size, drm_map_type_t type, + drm_map_flags_t flags, drm_local_map_t ** map_ptr) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; drm_map_t *map; - drm_map_t __user *argp = (void __user *)arg; drm_map_list_t *list; drm_dma_handle_t *dmah; - if ( !(filp->f_mode & 3) ) return -EACCES; /* Require read/write */ - map = drm_alloc( sizeof(*map), DRM_MEM_MAPS ); if ( !map ) return -ENOMEM; - if ( copy_from_user( map, argp, sizeof(*map) ) ) { - drm_free( map, sizeof(*map), DRM_MEM_MAPS ); - return -EFAULT; - } + map->offset = offset; + map->size = size; + map->flags = flags; + map->type = type; /* Only allow shared memory to be removable since we only keep enough * book keeping information about shared memory to allow for removal @@ -218,10 +214,42 @@ int drm_addmap( struct inode *inode, struct file *filp, #endif up(&dev->struct_sem); - if ( copy_to_user( argp, map, sizeof(*map) ) ) + *map_ptr = map; + return 0; +} +EXPORT_SYMBOL(drm_addmap); + +int drm_addmap_ioctl(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 map; + drm_map_t *map_ptr; + drm_map_t __user *argp = (void __user *)arg; + int err; + + if (!(filp->f_mode & 3)) + return -EACCES; /* Require read/write */ + + if (copy_from_user(& map, argp, sizeof(map))) { return -EFAULT; - if (copy_to_user(&argp->handle, &map->offset, sizeof(map->offset))) + } + + err = drm_addmap( dev, map.offset, map.size, map.type, map.flags, + &map_ptr ); + + if (err) { + return err; + } + + if (copy_to_user(argp, map_ptr, sizeof(*map_ptr))) return -EFAULT; + if (map_ptr->type != _DRM_SHM) { + if (copy_to_user(&argp->handle, &map_ptr->offset, + sizeof(map_ptr->offset))) + return -EFAULT; + } return 0; } @@ -240,32 +268,23 @@ int drm_addmap( struct inode *inode, struct file *filp, * its being used, and free any associate resource (such as MTRR's) if it's not * being on use. * - * \sa addmap(). + * \sa drm_addmap */ -int drm_rmmap(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) +int drm_rmmap(drm_device_t *dev, void *handle) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; struct list_head *list; drm_map_list_t *r_list = NULL; drm_vma_entry_t *pt, *prev; drm_map_t *map; - drm_map_t request; int found_maps = 0; - if (copy_from_user(&request, (drm_map_t __user *)arg, - sizeof(request))) { - return -EFAULT; - } - down(&dev->struct_sem); list = &dev->maplist->head; list_for_each(list, &dev->maplist->head) { r_list = list_entry(list, drm_map_list_t, head); if(r_list->map && - r_list->map->offset == (unsigned long) request.handle && + r_list->map->handle == handle && r_list->map->flags & _DRM_REMOVABLE) break; } @@ -319,6 +338,21 @@ int drm_rmmap(struct inode *inode, struct file *filp, up(&dev->struct_sem); return 0; } +EXPORT_SYMBOL(drm_rmmap); + +int drm_rmmap_ioctl(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 request; + + if (copy_from_user(&request, (drm_map_t __user *)arg, sizeof(request))) { + return -EFAULT; + } + + return drm_rmmap(dev, request.handle); +} /** * Cleanup after an error on one of the addbufs() functions. -- cgit v1.2.3