Page MenuHomeFreeBSD
Differential D23085 Diff 66487 sys/dev/drm/core/drm_ioc32.c

Changeset View

Standalone View

View Options

sys/dev/drm/core/drm_ioc32.c

  • This file was added.
/*
* \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.
*/
/* FBSD: Linux header polution, we need wait.h and fs.h */
#include <linux/fs.h>
#include <linux/wait.h>
#include <linux/compat.h>
#include <linux/ratelimit.h>
#include <linux/export.h>
#include <drm/drm_agpsupport.h>
#include <drm/drm_file.h>
#include <drm/drm_print.h>
#include "drm_crtc_internal.h"
#include "drm_internal.h"
#include "drm_legacy.h"
#ifdef __FreeBSD__
#define compat_ptr(x) ((void *)(unsigned long)x)
#define ptr_to_compat(x) ((unsigned long)x)
#endif
#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_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_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;
struct drm_version v;
int err;
if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
return -EFAULT;
v = (struct drm_version) {
.name_len = v32.name_len,
.name = compat_ptr(v32.name),
.date_len = v32.date_len,
.date = compat_ptr(v32.date),
.desc_len = v32.desc_len,
.desc = compat_ptr(v32.desc),
};
err = drm_ioctl_kernel(file, drm_version, &v,
DRM_UNLOCKED|DRM_RENDER_ALLOW);
if (err)
return err;
v32.version_major = v.version_major;
v32.version_minor = v.version_minor;
v32.version_patchlevel = v.version_patchlevel;
v32.name_len = v.name_len;
v32.date_len = v.date_len;
v32.desc_len = v.desc_len;
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;
struct drm_unique uq;
int err;
if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
return -EFAULT;
uq = (struct drm_unique){
.unique_len = uq32.unique_len,
.unique = compat_ptr(uq32.unique),
};
err = drm_ioctl_kernel(file, drm_getunique, &uq, DRM_UNLOCKED);
if (err)
return err;
uq32.unique_len = uq.unique_len;
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)
{
/* it's dead */
return -EINVAL;
}
#if IS_ENABLED(CONFIG_DRM_LEGACY)
typedef struct drm_map32 {
u32 offset; /* Requested physical address (0 for SAREA) */
u32 size; /* Requested physical size (bytes) */
enum drm_map_type type; /* Type of memory to map */
enum drm_map_flags 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;
struct drm_map map;
int err;
if (copy_from_user(&m32, argp, sizeof(m32)))
return -EFAULT;
map.offset = m32.offset;
err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, DRM_UNLOCKED);
if (err)
return err;
m32.offset = map.offset;
m32.size = map.size;
m32.type = map.type;
m32.flags = map.flags;
m32.handle = ptr_to_compat((void __user *)map.handle);
m32.mtrr = map.mtrr;
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;
struct drm_map map;
int err;
if (copy_from_user(&m32, argp, sizeof(m32)))
return -EFAULT;
map.offset = m32.offset;
map.size = m32.size;
map.type = m32.type;
map.flags = m32.flags;
err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
if (err)
return err;
m32.offset = map.offset;
m32.mtrr = map.mtrr;
m32.handle = ptr_to_compat((void __user *)map.handle);
if (map.handle != compat_ptr(m32.handle))
pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
map.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;
struct drm_map map;
u32 handle;
if (get_user(handle, &argp->handle))
return -EFAULT;
map.handle = compat_ptr(handle);
return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
}
#endif
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;
struct drm_client client;
int err;
if (copy_from_user(&c32, argp, sizeof(c32)))
return -EFAULT;
client.idx = c32.idx;
err = drm_ioctl_kernel(file, drm_getclient, &client, DRM_UNLOCKED);
if (err)
return err;
c32.idx = client.idx;
c32.auth = client.auth;
c32.pid = client.pid;
c32.uid = client.uid;
c32.magic = client.magic;
c32.iocs = client.iocs;
if (copy_to_user(argp, &c32, sizeof(c32)))
return -EFAULT;
return 0;
}
typedef struct drm_stats32 {
u32 count;
struct {
u32 value;
enum drm_stat_type type;
} data[15];
} drm_stats32_t;
static int compat_drm_getstats(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_stats32_t __user *argp = (void __user *)arg;
int err;
err = drm_ioctl_kernel(file, drm_noop, NULL, DRM_UNLOCKED);
if (err)
return err;
if (clear_user(argp, sizeof(drm_stats32_t)))
return -EFAULT;
return 0;
}
#if IS_ENABLED(CONFIG_DRM_LEGACY)
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_desc32_t desc32;
struct drm_buf_desc desc;
int err;
if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
return -EFAULT;
desc = (struct drm_buf_desc){
desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
desc32.flags, desc32.agp_start
};
err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
if (err)
return err;
desc32 = (drm_buf_desc32_t){
desc.count, desc.size, desc.low_mark, desc.high_mark,
desc.flags, desc.agp_start
};
if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
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;
struct drm_buf_desc buf;
if (copy_from_user(&b32, argp, sizeof(b32)))
return -EFAULT;
buf.size = b32.size;
buf.low_mark = b32.low_mark;
buf.high_mark = b32.high_mark;
return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
typedef struct drm_buf_info32 {
int count; /**< Entries in list */
u32 list;
} drm_buf_info32_t;
static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
{
drm_buf_info32_t *request = data;
drm_buf_desc32_t __user *to = compat_ptr(request->list);
drm_buf_desc32_t v = {.count = from->buf_count,
.size = from->buf_size,
.low_mark = from->low_mark,
.high_mark = from->high_mark};
if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
return -EFAULT;
return 0;
}
static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_buf_info32_t *request = data;
return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
}
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;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
if (req32.count < 0)
req32.count = 0;
err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
if (err)
return err;
if (put_user(req32.count, &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 map_one_buf32(void *data, int idx, unsigned long virtual,
struct drm_buf *buf)
{
drm_buf_map32_t *request = data;
drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
drm_buf_pub32_t v;
v.idx = buf->idx;
v.total = buf->total;
v.used = 0;
v.address = virtual + buf->offset;
if (copy_to_user(to, &v, sizeof(v)))
return -EFAULT;
return 0;
}
static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_buf_map32_t *request = data;
void __user *v;
int err = __drm_legacy_mapbufs(dev, data, &request->count,
&v, map_one_buf32,
file_priv);
request->virtual = ptr_to_compat(v);
return err;
}
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;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
if (req32.count < 0)
return -EINVAL;
err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
if (err)
return err;
if (put_user(req32.count, &argp->count)
|| put_user(req32.virtual, &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;
struct drm_buf_free request;
drm_buf_free32_t __user *argp = (void __user *)arg;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request.count = req32.count;
request.list = compat_ptr(req32.list);
return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
}
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;
struct drm_ctx_priv_map request;
drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request.ctx_id = req32.ctx_id;
request.handle = compat_ptr(req32.handle);
return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct drm_ctx_priv_map req;
drm_ctx_priv_map32_t req32;
drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
req.ctx_id = req32.ctx_id;
err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
if (err)
return err;
req32.handle = ptr_to_compat((void __user *)req.handle);
if (copy_to_user(argp, &req32, sizeof(req32)))
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;
struct drm_ctx_res res;
int err;
if (copy_from_user(&res32, argp, sizeof(res32)))
return -EFAULT;
res.count = res32.count;
res.contexts = compat_ptr(res32.contexts);
err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
if (err)
return err;
res32.count = res.count;
if (copy_to_user(argp, &res32, sizeof(res32)))
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 */
enum drm_dma_flags 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;
struct drm_dma d;
int err;
if (copy_from_user(&d32, argp, sizeof(d32)))
return -EFAULT;
d.context = d32.context;
d.send_count = d32.send_count;
d.send_indices = compat_ptr(d32.send_indices);
d.send_sizes = compat_ptr(d32.send_sizes);
d.flags = d32.flags;
d.request_count = d32.request_count;
d.request_indices = compat_ptr(d32.request_indices);
d.request_sizes = compat_ptr(d32.request_sizes);
err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
if (err)
return err;
if (put_user(d.request_size, &argp->request_size)
|| put_user(d.granted_count, &argp->granted_count))
return -EFAULT;
return 0;
}
#endif
#if IS_ENABLED(CONFIG_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;
struct drm_agp_mode mode;
if (get_user(mode.mode, &argp->mode))
return -EFAULT;
return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
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;
struct drm_agp_info info;
int err;
err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH);
if (err)
return err;
i32.agp_version_major = info.agp_version_major;
i32.agp_version_minor = info.agp_version_minor;
i32.mode = info.mode;
i32.aperture_base = info.aperture_base;
i32.aperture_size = info.aperture_size;
i32.memory_allowed = info.memory_allowed;
i32.memory_used = info.memory_used;
i32.id_vendor = info.id_vendor;
i32.id_device = info.id_device;
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;
struct drm_agp_buffer request;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request.size = req32.size;
request.type = req32.type;
err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
if (err)
return err;
req32.handle = request.handle;
req32.physical = request.physical;
if (copy_to_user(argp, &req32, sizeof(req32))) {
drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
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;
struct drm_agp_buffer request;
if (get_user(request.handle, &argp->handle))
return -EFAULT;
return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
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;
struct drm_agp_binding request;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request.handle = req32.handle;
request.offset = req32.offset;
return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_binding32_t __user *argp = (void __user *)arg;
struct drm_agp_binding request;
if (get_user(request.handle, &argp->handle))
return -EFAULT;
return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
#endif /* CONFIG_AGP */
#if IS_ENABLED(CONFIG_DRM_LEGACY)
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;
struct drm_scatter_gather request;
int err;
if (get_user(request.size, &argp->size))
return -EFAULT;
err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
if (err)
return err;
/* XXX not sure about the handle conversion here... */
if (put_user(request.handle >> 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;
struct drm_scatter_gather request;
unsigned long x;
if (get_user(x, &argp->handle))
return -EFAULT;
request.handle = x << PAGE_SHIFT;
return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
#endif
#if defined(CONFIG_X86)
typedef struct drm_update_draw32 {
drm_drawable_t handle;
unsigned int type;
unsigned int num;
/* 64-bit version has a 32-bit pad here */
u64 data; /**< Pointer */
} __attribute__((packed)) drm_update_draw32_t;
static int compat_drm_update_draw(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_update_draw32_t update32;
if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
return -EFAULT;
return drm_ioctl_kernel(file, drm_noop, NULL,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
}
#endif
struct drm_wait_vblank_request32 {
enum drm_vblank_seq_type type;
unsigned int sequence;
u32 signal;
};
struct drm_wait_vblank_reply32 {
enum drm_vblank_seq_type 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;
union drm_wait_vblank req;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
req.request.type = req32.request.type;
req.request.sequence = req32.request.sequence;
req.request.signal = req32.request.signal;
err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
if (err)
return err;
req32.reply.type = req.reply.type;
req32.reply.sequence = req.reply.sequence;
req32.reply.tval_sec = req.reply.tval_sec;
req32.reply.tval_usec = req.reply.tval_usec;
if (copy_to_user(argp, &req32, sizeof(req32)))
return -EFAULT;
return 0;
}
#if defined(CONFIG_X86)
typedef struct drm_mode_fb_cmd232 {
u32 fb_id;
u32 width;
u32 height;
u32 pixel_format;
u32 flags;
u32 handles[4];
u32 pitches[4];
u32 offsets[4];
u64 modifier[4];
} __attribute__((packed)) drm_mode_fb_cmd232_t;
static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
struct drm_mode_fb_cmd2 req64;
int err;
if (copy_from_user(&req64, argp,
offsetof(drm_mode_fb_cmd232_t, modifier)))
return -EFAULT;
if (copy_from_user(&req64.modifier, &argp->modifier,
sizeof(req64.modifier)))
return -EFAULT;
err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64,
DRM_UNLOCKED);
if (err)
return err;
if (put_user(req64.fb_id, &argp->fb_id))
return -EFAULT;
return 0;
}
#endif
static struct {
drm_ioctl_compat_t *fn;
char *name;
} drm_compat_ioctls[] = {
#define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
#if IS_ENABLED(CONFIG_DRM_LEGACY)
DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
#endif
DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
#if IS_ENABLED(CONFIG_DRM_LEGACY)
DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
#endif
#if IS_ENABLED(CONFIG_AGP)
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
#endif
#if IS_ENABLED(CONFIG_DRM_LEGACY)
DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
#endif
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
#endif
DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
#endif
};
/**
* drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
* @filp: file this ioctl is called on
* @cmd: ioctl cmd number
* @arg: user argument
*
* Compatibility handler for 32 bit userspace running on 64 kernels. All actual
* IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
* appropriate. Note that this only handles DRM core IOCTLs, if the driver has
* botched IOCTL itself, it must handle those by wrapping this function.
*
* Returns:
* Zero on success, negative error code on failure.
*/
long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
unsigned int nr = DRM_IOCTL_NR(cmd);
#ifdef __linux__
struct drm_file *file_priv = filp->private_data;
#endif
drm_ioctl_compat_t *fn;
int ret;
/* Assume that ioctls without an explicit compat routine will just
* work. This may not always be a good assumption, but it's better
* than always failing.
*/
if (nr >= ARRAY_SIZE(drm_compat_ioctls))
return drm_ioctl(filp, cmd, arg);
fn = drm_compat_ioctls[nr].fn;
if (!fn)
return drm_ioctl(filp, cmd, arg);
#ifdef __linux__
DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
task_pid_nr(current),
(long)old_encode_dev(file_priv->minor->kdev->devt),
file_priv->authenticated,
drm_compat_ioctls[nr].name);
#endif
ret = (*fn)(filp, cmd, arg);
if (ret)
DRM_DEBUG("ret = %d\n", ret);
return ret;
}
EXPORT_SYMBOL(drm_compat_ioctl);