--- /dev/null
+/**
+ * \file drm_ioc32.c
+ *
+ * 32-bit ioctl compatibility routines for the DRM.
+ *
+ * \author Paul Mackerras <paulus@samba.org>
+ *
+ * Copyright (C) Paul Mackerras 2005.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include <linux/compat.h>
+
+#include "drmP.h"
+#include "drm_core.h"
+
+#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
+#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
+#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
+#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
+#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
+
+#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
+#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
+#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
+#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
+#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
+#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
+#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
+
+#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
+
+#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
+#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
+
+#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
+#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
+
+#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
+#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
+#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
+#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
+#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
+#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
+
+#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
+#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
+
+#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
+
+typedef struct drm_version_32 {
+ int version_major; /**< Major version */
+ int version_minor; /**< Minor version */
+ int version_patchlevel; /**< Patch level */
+ u32 name_len; /**< Length of name buffer */
+ u32 name; /**< Name of driver */
+ u32 date_len; /**< Length of date buffer */
+ u32 date; /**< User-space buffer to hold date */
+ u32 desc_len; /**< Length of desc buffer */
+ u32 desc; /**< User-space buffer to hold desc */
+} drm_version32_t;
+
+static int compat_drm_version(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_version32_t v32;
+ drm_version_t __user *version;
+ int err;
+
+ if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
+ return -EFAULT;
+
+ version = compat_alloc_user_space(sizeof(*version));
+ if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
+ return -EFAULT;
+ if (__put_user(v32.name_len, &version->name_len)
+ || __put_user((void __user *)(unsigned long)v32.name,
+ &version->name)
+ || __put_user(v32.date_len, &version->date_len)
+ || __put_user((void __user *)(unsigned long)v32.date,
+ &version->date)
+ || __put_user(v32.desc_len, &version->desc_len)
+ || __put_user((void __user *)(unsigned long)v32.desc,
+ &version->desc))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_VERSION, (unsigned long)version);
+ if (err)
+ return err;
+
+ if (__get_user(v32.version_major, &version->version_major)
+ || __get_user(v32.version_minor, &version->version_minor)
+ || __get_user(v32.version_patchlevel, &version->version_patchlevel)
+ || __get_user(v32.name_len, &version->name_len)
+ || __get_user(v32.date_len, &version->date_len)
+ || __get_user(v32.desc_len, &version->desc_len))
+ return -EFAULT;
+
+ if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
+ return -EFAULT;
+ return 0;
+}
+
+typedef struct drm_unique32 {
+ u32 unique_len; /**< Length of unique */
+ u32 unique; /**< Unique name for driver instantiation */
+} drm_unique32_t;
+
+static int compat_drm_getunique(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_unique32_t uq32;
+ drm_unique_t __user *u;
+ int err;
+
+ if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
+ return -EFAULT;
+
+ u = compat_alloc_user_space(sizeof(*u));
+ if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
+ return -EFAULT;
+ if (__put_user(uq32.unique_len, &u->unique_len)
+ || __put_user((void __user *)(unsigned long)uq32.unique,
+ &u->unique))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
+ if (err)
+ return err;
+
+ if (__get_user(uq32.unique_len, &u->unique_len))
+ return -EFAULT;
+ if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
+ return -EFAULT;
+ return 0;
+}
+
+static int compat_drm_setunique(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_unique32_t uq32;
+ drm_unique_t __user *u;
+
+ if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
+ return -EFAULT;
+
+ u = compat_alloc_user_space(sizeof(*u));
+ if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
+ return -EFAULT;
+ if (__put_user(uq32.unique_len, &u->unique_len)
+ || __put_user((void __user *)(unsigned long)uq32.unique,
+ &u->unique))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
+}
+
+typedef struct drm_map32 {
+ u32 offset; /**< Requested physical address (0 for SAREA)*/
+ u32 size; /**< Requested physical size (bytes) */
+ drm_map_type_t type; /**< Type of memory to map */
+ drm_map_flags_t flags; /**< Flags */
+ u32 handle; /**< User-space: "Handle" to pass to mmap() */
+ int mtrr; /**< MTRR slot used */
+} drm_map32_t;
+
+static int compat_drm_getmap(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_map32_t __user *argp = (void __user *)arg;
+ drm_map32_t m32;
+ drm_map_t __user *map;
+ int idx, err;
+ void *handle;
+
+ if (get_user(idx, &argp->offset))
+ return -EFAULT;
+
+ map = compat_alloc_user_space(sizeof(*map));
+ if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+ return -EFAULT;
+ if (__put_user(idx, &map->offset))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_GET_MAP, (unsigned long)map);
+ if (err)
+ return err;
+
+ if (__get_user(m32.offset, &map->offset)
+ || __get_user(m32.size, &map->size)
+ || __get_user(m32.type, &map->type)
+ || __get_user(m32.flags, &map->flags)
+ || __get_user(handle, &map->handle)
+ || __get_user(m32.mtrr, &map->mtrr))
+ return -EFAULT;
+
+ m32.handle = (unsigned long)handle;
+ if (copy_to_user(argp, &m32, sizeof(m32)))
+ return -EFAULT;
+ return 0;
+
+}
+
+static int compat_drm_addmap(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_map32_t __user *argp = (void __user *)arg;
+ drm_map32_t m32;
+ drm_map_t __user *map;
+ int err;
+ void *handle;
+
+ if (copy_from_user(&m32, argp, sizeof(m32)))
+ return -EFAULT;
+
+ map = compat_alloc_user_space(sizeof(*map));
+ if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+ return -EFAULT;
+ if (__put_user(m32.offset, &map->offset)
+ || __put_user(m32.size, &map->size)
+ || __put_user(m32.type, &map->type)
+ || __put_user(m32.flags, &map->flags))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_ADD_MAP, (unsigned long)map);
+ if (err)
+ return err;
+
+ if (__get_user(m32.offset, &map->offset)
+ || __get_user(m32.mtrr, &map->mtrr)
+ || __get_user(handle, &map->handle))
+ return -EFAULT;
+
+ m32.handle = (unsigned long)handle;
+ if (m32.handle != (unsigned long)handle && printk_ratelimit())
+ printk(KERN_ERR "compat_drm_addmap truncated handle"
+ " %p for type %d offset %x\n",
+ handle, m32.type, m32.offset);
+
+ if (copy_to_user(argp, &m32, sizeof(m32)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int compat_drm_rmmap(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_map32_t __user *argp = (void __user *)arg;
+ drm_map_t __user *map;
+ u32 handle;
+
+ if (get_user(handle, &argp->handle))
+ return -EFAULT;
+
+ map = compat_alloc_user_space(sizeof(*map));
+ if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+ return -EFAULT;
+ if (__put_user((void *)(unsigned long)handle, &map->handle))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_RM_MAP, (unsigned long)map);
+}
+
+typedef struct drm_client32 {
+ int idx; /**< Which client desired? */
+ int auth; /**< Is client authenticated? */
+ u32 pid; /**< Process ID */
+ u32 uid; /**< User ID */
+ u32 magic; /**< Magic */
+ u32 iocs; /**< Ioctl count */
+} drm_client32_t;
+
+static int compat_drm_getclient(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_client32_t c32;
+ drm_client32_t __user *argp = (void __user *)arg;
+ drm_client_t __user *client;
+ int idx, err;
+
+ if (get_user(idx, &argp->idx))
+ return -EFAULT;
+
+ client = compat_alloc_user_space(sizeof(*client));
+ if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
+ return -EFAULT;
+ if (__put_user(idx, &client->idx))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_GET_CLIENT, (unsigned long)client);
+ if (err)
+ return err;
+
+ if (__get_user(c32.auth, &client->auth)
+ || __get_user(c32.pid, &client->pid)
+ || __get_user(c32.uid, &client->uid)
+ || __get_user(c32.magic, &client->magic)
+ || __get_user(c32.iocs, &client->iocs))
+ return -EFAULT;
+
+ if (copy_to_user(argp, &c32, sizeof(c32)))
+ return -EFAULT;
+ return 0;
+}
+
+typedef struct drm_stats32 {
+ u32 count;
+ struct {
+ u32 value;
+ drm_stat_type_t type;
+ } data[15];
+} drm_stats32_t;
+
+static int compat_drm_getstats(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_stats32_t s32;
+ drm_stats32_t __user *argp = (void __user *)arg;
+ drm_stats_t __user *stats;
+ int i, err;
+
+ stats = compat_alloc_user_space(sizeof(*stats));
+ if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_GET_STATS, (unsigned long)stats);
+ if (err)
+ return err;
+
+ if (__get_user(s32.count, &stats->count))
+ return -EFAULT;
+ for (i = 0; i < 15; ++i)
+ if (__get_user(s32.data[i].value, &stats->data[i].value)
+ || __get_user(s32.data[i].type, &stats->data[i].type))
+ return -EFAULT;
+
+ if (copy_to_user(argp, &s32, sizeof(s32)))
+ return -EFAULT;
+ return 0;
+}
+
+typedef struct drm_buf_desc32 {
+ int count; /**< Number of buffers of this size */
+ int size; /**< Size in bytes */
+ int low_mark; /**< Low water mark */
+ int high_mark; /**< High water mark */
+ int flags;
+ u32 agp_start; /**< Start address in the AGP aperture */
+} drm_buf_desc32_t;
+
+static int compat_drm_addbufs(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_buf_desc32_t __user *argp = (void __user *)arg;
+ drm_buf_desc_t __user *buf;
+ int err;
+ unsigned long agp_start;
+
+ buf = compat_alloc_user_space(sizeof(*buf));
+ if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
+ || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
+ return -EFAULT;
+
+ if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
+ || __get_user(agp_start, &argp->agp_start)
+ || __put_user(agp_start, &buf->agp_start))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
+ if (err)
+ return err;
+
+ if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
+ || __get_user(agp_start, &buf->agp_start)
+ || __put_user(agp_start, &argp->agp_start))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int compat_drm_markbufs(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_buf_desc32_t b32;
+ drm_buf_desc32_t __user *argp = (void __user *)arg;
+ drm_buf_desc_t __user *buf;
+
+ if (copy_from_user(&b32, argp, sizeof(b32)))
+ return -EFAULT;
+
+ buf = compat_alloc_user_space(sizeof(*buf));
+ if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
+ return -EFAULT;
+
+ if (__put_user(b32.size, &buf->size)
+ || __put_user(b32.low_mark, &buf->low_mark)
+ || __put_user(b32.high_mark, &buf->high_mark))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
+}
+
+typedef struct drm_buf_info32 {
+ int count; /**< Entries in list */
+ u32 list;
+} drm_buf_info32_t;
+
+static int compat_drm_infobufs(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_buf_info32_t req32;
+ drm_buf_info32_t __user *argp = (void __user *)arg;
+ drm_buf_desc32_t __user *to;
+ drm_buf_info_t __user *request;
+ drm_buf_desc_t __user *list;
+ size_t nbytes;
+ int i, err;
+ int count, actual;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ count = req32.count;
+ to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
+ if (count < 0)
+ count = 0;
+ if (count > 0
+ && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
+ return -EFAULT;
+
+ nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
+ request = compat_alloc_user_space(nbytes);
+ if (!access_ok(VERIFY_WRITE, request, nbytes))
+ return -EFAULT;
+ list = (drm_buf_desc_t *) (request + 1);
+
+ if (__put_user(count, &request->count)
+ || __put_user(list, &request->list))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_INFO_BUFS, (unsigned long)request);
+ if (err)
+ return err;
+
+ if (__get_user(actual, &request->count))
+ return -EFAULT;
+ if (count >= actual)
+ for (i = 0; i < actual; ++i)
+ if (__copy_in_user(&to[i], &list[i],
+ offsetof(drm_buf_desc_t, flags)))
+ return -EFAULT;
+
+ if (__put_user(actual, &argp->count))
+ return -EFAULT;
+
+ return 0;
+}
+
+typedef struct drm_buf_pub32 {
+ int idx; /**< Index into the master buffer list */
+ int total; /**< Buffer size */
+ int used; /**< Amount of buffer in use (for DMA) */
+ u32 address; /**< Address of buffer */
+} drm_buf_pub32_t;
+
+typedef struct drm_buf_map32 {
+ int count; /**< Length of the buffer list */
+ u32 virtual; /**< Mmap'd area in user-virtual */
+ u32 list; /**< Buffer information */
+} drm_buf_map32_t;
+
+static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_buf_map32_t __user *argp = (void __user *)arg;
+ drm_buf_map32_t req32;
+ drm_buf_pub32_t __user *list32;
+ drm_buf_map_t __user *request;
+ drm_buf_pub_t __user *list;
+ int i, err;
+ int count, actual;
+ size_t nbytes;
+ void __user *addr;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+ count = req32.count;
+ list32 = (void __user *)(unsigned long)req32.list;
+
+ if (count < 0)
+ return -EINVAL;
+ nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
+ request = compat_alloc_user_space(nbytes);
+ if (!access_ok(VERIFY_WRITE, request, nbytes))
+ return -EFAULT;
+ list = (drm_buf_pub_t *) (request + 1);
+
+ if (__put_user(count, &request->count)
+ || __put_user(list, &request->list))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_MAP_BUFS, (unsigned long)request);
+ if (err)
+ return err;
+
+ if (__get_user(actual, &request->count))
+ return -EFAULT;
+ if (count >= actual)
+ for (i = 0; i < actual; ++i)
+ if (__copy_in_user(&list32[i], &list[i],
+ offsetof(drm_buf_pub_t, address))
+ || __get_user(addr, &list[i].address)
+ || __put_user((unsigned long)addr,
+ &list32[i].address))
+ return -EFAULT;
+
+ if (__put_user(actual, &argp->count)
+ || __get_user(addr, &request->virtual)
+ || __put_user((unsigned long)addr, &argp->virtual))
+ return -EFAULT;
+
+ return 0;
+}
+
+typedef struct drm_buf_free32 {
+ int count;
+ u32 list;
+} drm_buf_free32_t;
+
+static int compat_drm_freebufs(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_buf_free32_t req32;
+ drm_buf_free_t __user *request;
+ drm_buf_free32_t __user *argp = (void __user *)arg;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+ return -EFAULT;
+ if (__put_user(req32.count, &request->count)
+ || __put_user((int __user *)(unsigned long)req32.list,
+ &request->list))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_FREE_BUFS, (unsigned long)request);
+}
+
+typedef struct drm_ctx_priv_map32 {
+ unsigned int ctx_id; /**< Context requesting private mapping */
+ u32 handle; /**< Handle of map */
+} drm_ctx_priv_map32_t;
+
+static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_ctx_priv_map32_t req32;
+ drm_ctx_priv_map_t __user *request;
+ drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+ return -EFAULT;
+ if (__put_user(req32.ctx_id, &request->ctx_id)
+ || __put_user((void *)(unsigned long)req32.handle,
+ &request->handle))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
+}
+
+static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_ctx_priv_map_t __user *request;
+ drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
+ int err;
+ unsigned int ctx_id;
+ void *handle;
+
+ if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
+ || __get_user(ctx_id, &argp->ctx_id))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+ return -EFAULT;
+ if (__put_user(ctx_id, &request->ctx_id))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
+ if (err)
+ return err;
+
+ if (__get_user(handle, &request->handle)
+ || __put_user((unsigned long)handle, &argp->handle))
+ return -EFAULT;
+
+ return 0;
+}
+
+typedef struct drm_ctx_res32 {
+ int count;
+ u32 contexts;
+} drm_ctx_res32_t;
+
+static int compat_drm_resctx(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_ctx_res32_t __user *argp = (void __user *)arg;
+ drm_ctx_res32_t res32;
+ drm_ctx_res_t __user *res;
+ int err;
+
+ if (copy_from_user(&res32, argp, sizeof(res32)))
+ return -EFAULT;
+
+ res = compat_alloc_user_space(sizeof(*res));
+ if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
+ return -EFAULT;
+ if (__put_user(res32.count, &res->count)
+ || __put_user((drm_ctx_t __user *) (unsigned long)res32.contexts,
+ &res->contexts))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_RES_CTX, (unsigned long)res);
+ if (err)
+ return err;
+
+ if (__get_user(res32.count, &res->count)
+ || __put_user(res32.count, &argp->count))
+ return -EFAULT;
+
+ return 0;
+}
+
+typedef struct drm_dma32 {
+ int context; /**< Context handle */
+ int send_count; /**< Number of buffers to send */
+ u32 send_indices; /**< List of handles to buffers */
+ u32 send_sizes; /**< Lengths of data to send */
+ drm_dma_flags_t flags; /**< Flags */
+ int request_count; /**< Number of buffers requested */
+ int request_size; /**< Desired size for buffers */
+ u32 request_indices; /**< Buffer information */
+ u32 request_sizes;
+ int granted_count; /**< Number of buffers granted */
+} drm_dma32_t;
+
+static int compat_drm_dma(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_dma32_t d32;
+ drm_dma32_t __user *argp = (void __user *)arg;
+ drm_dma_t __user *d;
+ int err;
+
+ if (copy_from_user(&d32, argp, sizeof(d32)))
+ return -EFAULT;
+
+ d = compat_alloc_user_space(sizeof(*d));
+ if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
+ return -EFAULT;
+
+ if (__put_user(d32.context, &d->context)
+ || __put_user(d32.send_count, &d->send_count)
+ || __put_user((int __user *)(unsigned long)d32.send_indices,
+ &d->send_indices)
+ || __put_user((int __user *)(unsigned long)d32.send_sizes,
+ &d->send_sizes)
+ || __put_user(d32.flags, &d->flags)
+ || __put_user(d32.request_count, &d->request_count)
+ || __put_user((int __user *)(unsigned long)d32.request_indices,
+ &d->request_indices)
+ || __put_user((int __user *)(unsigned long)d32.request_sizes,
+ &d->request_sizes))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_DMA, (unsigned long)d);
+ if (err)
+ return err;
+
+ if (__get_user(d32.request_size, &d->request_size)
+ || __get_user(d32.granted_count, &d->granted_count)
+ || __put_user(d32.request_size, &argp->request_size)
+ || __put_user(d32.granted_count, &argp->granted_count))
+ return -EFAULT;
+
+ return 0;
+}
+
+#if __OS_HAS_AGP
+typedef struct drm_agp_mode32 {
+ u32 mode; /**< AGP mode */
+} drm_agp_mode32_t;
+
+static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_mode32_t __user *argp = (void __user *)arg;
+ drm_agp_mode32_t m32;
+ drm_agp_mode_t __user *mode;
+
+ if (get_user(m32.mode, &argp->mode))
+ return -EFAULT;
+
+ mode = compat_alloc_user_space(sizeof(*mode));
+ if (put_user(m32.mode, &mode->mode))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
+}
+
+typedef struct drm_agp_info32 {
+ int agp_version_major;
+ int agp_version_minor;
+ u32 mode;
+ u32 aperture_base; /* physical address */
+ u32 aperture_size; /* bytes */
+ u32 memory_allowed; /* bytes */
+ u32 memory_used;
+
+ /* PCI information */
+ unsigned short id_vendor;
+ unsigned short id_device;
+} drm_agp_info32_t;
+
+static int compat_drm_agp_info(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_info32_t __user *argp = (void __user *)arg;
+ drm_agp_info32_t i32;
+ drm_agp_info_t __user *info;
+ int err;
+
+ info = compat_alloc_user_space(sizeof(*info));
+ if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_INFO, (unsigned long)info);
+ if (err)
+ return err;
+
+ if (__get_user(i32.agp_version_major, &info->agp_version_major)
+ || __get_user(i32.agp_version_minor, &info->agp_version_minor)
+ || __get_user(i32.mode, &info->mode)
+ || __get_user(i32.aperture_base, &info->aperture_base)
+ || __get_user(i32.aperture_size, &info->aperture_size)
+ || __get_user(i32.memory_allowed, &info->memory_allowed)
+ || __get_user(i32.memory_used, &info->memory_used)
+ || __get_user(i32.id_vendor, &info->id_vendor)
+ || __get_user(i32.id_device, &info->id_device))
+ return -EFAULT;
+
+ if (copy_to_user(argp, &i32, sizeof(i32)))
+ return -EFAULT;
+
+ return 0;
+}
+
+typedef struct drm_agp_buffer32 {
+ u32 size; /**< In bytes -- will round to page boundary */
+ u32 handle; /**< Used for binding / unbinding */
+ u32 type; /**< Type of memory to allocate */
+ u32 physical; /**< Physical used by i810 */
+} drm_agp_buffer32_t;
+
+static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_buffer32_t __user *argp = (void __user *)arg;
+ drm_agp_buffer32_t req32;
+ drm_agp_buffer_t __user *request;
+ int err;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || __put_user(req32.size, &request->size)
+ || __put_user(req32.type, &request->type))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
+ if (err)
+ return err;
+
+ if (__get_user(req32.handle, &request->handle)
+ || __get_user(req32.physical, &request->physical)
+ || copy_to_user(argp, &req32, sizeof(req32))) {
+ drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_FREE, (unsigned long)request);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int compat_drm_agp_free(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_buffer32_t __user *argp = (void __user *)arg;
+ drm_agp_buffer_t __user *request;
+ u32 handle;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || get_user(handle, &argp->handle)
+ || __put_user(handle, &request->handle))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_FREE, (unsigned long)request);
+}
+
+typedef struct drm_agp_binding32 {
+ u32 handle; /**< From drm_agp_buffer */
+ u32 offset; /**< In bytes -- will round to page boundary */
+} drm_agp_binding32_t;
+
+static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_binding32_t __user *argp = (void __user *)arg;
+ drm_agp_binding32_t req32;
+ drm_agp_binding_t __user *request;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || __put_user(req32.handle, &request->handle)
+ || __put_user(req32.offset, &request->offset))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_BIND, (unsigned long)request);
+}
+
+static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_agp_binding32_t __user *argp = (void __user *)arg;
+ drm_agp_binding_t __user *request;
+ u32 handle;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || get_user(handle, &argp->handle)
+ || __put_user(handle, &request->handle))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
+}
+#endif /* __OS_HAS_AGP */
+
+typedef struct drm_scatter_gather32 {
+ u32 size; /**< In bytes -- will round to page boundary */
+ u32 handle; /**< Used for mapping / unmapping */
+} drm_scatter_gather32_t;
+
+static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_scatter_gather32_t __user *argp = (void __user *)arg;
+ drm_scatter_gather_t __user *request;
+ int err;
+ unsigned long x;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
+ || __get_user(x, &argp->size)
+ || __put_user(x, &request->size))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_SG_ALLOC, (unsigned long)request);
+ if (err)
+ return err;
+
+ /* XXX not sure about the handle conversion here... */
+ if (__get_user(x, &request->handle)
+ || __put_user(x >> PAGE_SHIFT, &argp->handle))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int compat_drm_sg_free(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_scatter_gather32_t __user *argp = (void __user *)arg;
+ drm_scatter_gather_t __user *request;
+ unsigned long x;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
+ || __get_user(x, &argp->handle)
+ || __put_user(x << PAGE_SHIFT, &request->handle))
+ return -EFAULT;
+
+ return drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_SG_FREE, (unsigned long)request);
+}
+
+struct drm_wait_vblank_request32 {
+ drm_vblank_seq_type_t type;
+ unsigned int sequence;
+ u32 signal;
+};
+
+struct drm_wait_vblank_reply32 {
+ drm_vblank_seq_type_t type;
+ unsigned int sequence;
+ s32 tval_sec;
+ s32 tval_usec;
+};
+
+typedef union drm_wait_vblank32 {
+ struct drm_wait_vblank_request32 request;
+ struct drm_wait_vblank_reply32 reply;
+} drm_wait_vblank32_t;
+
+static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_wait_vblank32_t __user *argp = (void __user *)arg;
+ drm_wait_vblank32_t req32;
+ drm_wait_vblank_t __user *request;
+ int err;
+
+ if (copy_from_user(&req32, argp, sizeof(req32)))
+ return -EFAULT;
+
+ request = compat_alloc_user_space(sizeof(*request));
+ if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+ || __put_user(req32.request.type, &request->request.type)
+ || __put_user(req32.request.sequence, &request->request.sequence)
+ || __put_user(req32.request.signal, &request->request.signal))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
+ if (err)
+ return err;
+
+ if (__get_user(req32.reply.type, &request->reply.type)
+ || __get_user(req32.reply.sequence, &request->reply.sequence)
+ || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
+ || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
+ return -EFAULT;
+
+ if (copy_to_user(argp, &req32, sizeof(req32)))
+ return -EFAULT;
+
+ return 0;
+}
+
+drm_ioctl_compat_t *drm_compat_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
+ [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
+ [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
+ [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
+ [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
+ [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
+ [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
+#if __OS_HAS_AGP
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
+#endif
+ [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
+ [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
+ [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
+};
+
+/**
+ * Called whenever a 32-bit process running under a 64-bit kernel
+ * performs an ioctl on /dev/drm.
+ *
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument.
+ * \return zero on success or negative number on failure.
+ */
+long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ unsigned int nr = DRM_IOCTL_NR(cmd);
+ drm_ioctl_compat_t *fn;
+ int ret;
+
+ if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls))
+ return -ENOTTY;
+
+ fn = drm_compat_ioctls[nr];
+
+ lock_kernel(); /* XXX for now */
+ if (fn != NULL)
+ ret = (*fn) (filp, cmd, arg);
+ else
+ ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
+ unlock_kernel();
+
+ return ret;
+}
+
+EXPORT_SYMBOL(drm_compat_ioctl);
git://git.onelab.eu / linux-2.6.git / blobdiff