220 строки
7.0 KiB
C
220 строки
7.0 KiB
C
/**
|
|
* \file i915_ioc32.c
|
|
*
|
|
* 32-bit ioctl compatibility routines for the i915 DRM.
|
|
*
|
|
* \author Alan Hourihane <alanh@fairlite.demon.co.uk>
|
|
*
|
|
*
|
|
* Copyright (C) Paul Mackerras 2005
|
|
* Copyright (C) Alan Hourihane 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.h"
|
|
#include "i915_drm.h"
|
|
|
|
typedef struct _drm_i915_batchbuffer32 {
|
|
int start; /* agp offset */
|
|
int used; /* nr bytes in use */
|
|
int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */
|
|
int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */
|
|
int num_cliprects; /* mulitpass with multiple cliprects? */
|
|
u32 cliprects; /* pointer to userspace cliprects */
|
|
} drm_i915_batchbuffer32_t;
|
|
|
|
static int compat_i915_batchbuffer(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_i915_batchbuffer32_t batchbuffer32;
|
|
drm_i915_batchbuffer_t __user *batchbuffer;
|
|
|
|
if (copy_from_user
|
|
(&batchbuffer32, (void __user *)arg, sizeof(batchbuffer32)))
|
|
return -EFAULT;
|
|
|
|
batchbuffer = compat_alloc_user_space(sizeof(*batchbuffer));
|
|
if (!access_ok(VERIFY_WRITE, batchbuffer, sizeof(*batchbuffer))
|
|
|| __put_user(batchbuffer32.start, &batchbuffer->start)
|
|
|| __put_user(batchbuffer32.used, &batchbuffer->used)
|
|
|| __put_user(batchbuffer32.DR1, &batchbuffer->DR1)
|
|
|| __put_user(batchbuffer32.DR4, &batchbuffer->DR4)
|
|
|| __put_user(batchbuffer32.num_cliprects,
|
|
&batchbuffer->num_cliprects)
|
|
|| __put_user((int __user *)(unsigned long)batchbuffer32.cliprects,
|
|
&batchbuffer->cliprects))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_I915_BATCHBUFFER,
|
|
(unsigned long)batchbuffer);
|
|
}
|
|
|
|
typedef struct _drm_i915_cmdbuffer32 {
|
|
u32 buf; /* pointer to userspace command buffer */
|
|
int sz; /* nr bytes in buf */
|
|
int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */
|
|
int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */
|
|
int num_cliprects; /* mulitpass with multiple cliprects? */
|
|
u32 cliprects; /* pointer to userspace cliprects */
|
|
} drm_i915_cmdbuffer32_t;
|
|
|
|
static int compat_i915_cmdbuffer(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_i915_cmdbuffer32_t cmdbuffer32;
|
|
drm_i915_cmdbuffer_t __user *cmdbuffer;
|
|
|
|
if (copy_from_user
|
|
(&cmdbuffer32, (void __user *)arg, sizeof(cmdbuffer32)))
|
|
return -EFAULT;
|
|
|
|
cmdbuffer = compat_alloc_user_space(sizeof(*cmdbuffer));
|
|
if (!access_ok(VERIFY_WRITE, cmdbuffer, sizeof(*cmdbuffer))
|
|
|| __put_user((int __user *)(unsigned long)cmdbuffer32.buf,
|
|
&cmdbuffer->buf)
|
|
|| __put_user(cmdbuffer32.sz, &cmdbuffer->sz)
|
|
|| __put_user(cmdbuffer32.DR1, &cmdbuffer->DR1)
|
|
|| __put_user(cmdbuffer32.DR4, &cmdbuffer->DR4)
|
|
|| __put_user(cmdbuffer32.num_cliprects, &cmdbuffer->num_cliprects)
|
|
|| __put_user((int __user *)(unsigned long)cmdbuffer32.cliprects,
|
|
&cmdbuffer->cliprects))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_I915_CMDBUFFER,
|
|
(unsigned long)cmdbuffer);
|
|
}
|
|
|
|
typedef struct drm_i915_irq_emit32 {
|
|
u32 irq_seq;
|
|
} drm_i915_irq_emit32_t;
|
|
|
|
static int compat_i915_irq_emit(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_i915_irq_emit32_t req32;
|
|
drm_i915_irq_emit_t __user *request;
|
|
|
|
if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
|
|
return -EFAULT;
|
|
|
|
request = compat_alloc_user_space(sizeof(*request));
|
|
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|
|
|| __put_user((int __user *)(unsigned long)req32.irq_seq,
|
|
&request->irq_seq))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_I915_IRQ_EMIT,
|
|
(unsigned long)request);
|
|
}
|
|
typedef struct drm_i915_getparam32 {
|
|
int param;
|
|
u32 value;
|
|
} drm_i915_getparam32_t;
|
|
|
|
static int compat_i915_getparam(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_i915_getparam32_t req32;
|
|
drm_i915_getparam_t __user *request;
|
|
|
|
if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
|
|
return -EFAULT;
|
|
|
|
request = compat_alloc_user_space(sizeof(*request));
|
|
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|
|
|| __put_user(req32.param, &request->param)
|
|
|| __put_user((void __user *)(unsigned long)req32.value,
|
|
&request->value))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_I915_GETPARAM,
|
|
(unsigned long)request);
|
|
}
|
|
|
|
typedef struct drm_i915_mem_alloc32 {
|
|
int region;
|
|
int alignment;
|
|
int size;
|
|
u32 region_offset; /* offset from start of fb or agp */
|
|
} drm_i915_mem_alloc32_t;
|
|
|
|
static int compat_i915_alloc(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_i915_mem_alloc32_t req32;
|
|
drm_i915_mem_alloc_t __user *request;
|
|
|
|
if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
|
|
return -EFAULT;
|
|
|
|
request = compat_alloc_user_space(sizeof(*request));
|
|
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|
|
|| __put_user(req32.region, &request->region)
|
|
|| __put_user(req32.alignment, &request->alignment)
|
|
|| __put_user(req32.size, &request->size)
|
|
|| __put_user((void __user *)(unsigned long)req32.region_offset,
|
|
&request->region_offset))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_I915_ALLOC,
|
|
(unsigned long)request);
|
|
}
|
|
|
|
drm_ioctl_compat_t *i915_compat_ioctls[] = {
|
|
[DRM_I915_BATCHBUFFER] = compat_i915_batchbuffer,
|
|
[DRM_I915_CMDBUFFER] = compat_i915_cmdbuffer,
|
|
[DRM_I915_GETPARAM] = compat_i915_getparam,
|
|
[DRM_I915_IRQ_EMIT] = compat_i915_irq_emit,
|
|
[DRM_I915_ALLOC] = compat_i915_alloc
|
|
};
|
|
|
|
/**
|
|
* Called whenever a 32-bit process running under a 64-bit kernel
|
|
* performs an ioctl on /dev/dri/card<n>.
|
|
*
|
|
* \param filp file pointer.
|
|
* \param cmd command.
|
|
* \param arg user argument.
|
|
* \return zero on success or negative number on failure.
|
|
*/
|
|
long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
unsigned int nr = DRM_IOCTL_NR(cmd);
|
|
drm_ioctl_compat_t *fn = NULL;
|
|
int ret;
|
|
|
|
if (nr < DRM_COMMAND_BASE)
|
|
return drm_compat_ioctl(filp, cmd, arg);
|
|
|
|
if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(i915_compat_ioctls))
|
|
fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
|
|
|
|
if (fn != NULL)
|
|
ret = (*fn) (filp, cmd, arg);
|
|
else
|
|
ret = drm_ioctl(filp, cmd, arg);
|
|
|
|
return ret;
|
|
}
|