227 строки
7.3 KiB
C
227 строки
7.3 KiB
C
/**
|
|
* \file mga_ioc32.c
|
|
*
|
|
* 32-bit ioctl compatibility routines for the MGA DRM.
|
|
*
|
|
* \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich
|
|
*
|
|
*
|
|
* Copyright (C) Paul Mackerras 2005
|
|
* Copyright (C) Egbert Eich 2003,2004
|
|
* Copyright (C) Dave Airlie 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 <drm/drmP.h>
|
|
#include <drm/mga_drm.h>
|
|
#include "mga_drv.h"
|
|
|
|
typedef struct drm32_mga_init {
|
|
int func;
|
|
u32 sarea_priv_offset;
|
|
int chipset;
|
|
int sgram;
|
|
unsigned int maccess;
|
|
unsigned int fb_cpp;
|
|
unsigned int front_offset, front_pitch;
|
|
unsigned int back_offset, back_pitch;
|
|
unsigned int depth_cpp;
|
|
unsigned int depth_offset, depth_pitch;
|
|
unsigned int texture_offset[MGA_NR_TEX_HEAPS];
|
|
unsigned int texture_size[MGA_NR_TEX_HEAPS];
|
|
u32 fb_offset;
|
|
u32 mmio_offset;
|
|
u32 status_offset;
|
|
u32 warp_offset;
|
|
u32 primary_offset;
|
|
u32 buffers_offset;
|
|
} drm_mga_init32_t;
|
|
|
|
static int compat_mga_init(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_mga_init32_t init32;
|
|
drm_mga_init_t __user *init;
|
|
int err = 0, i;
|
|
|
|
if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
|
|
return -EFAULT;
|
|
|
|
init = compat_alloc_user_space(sizeof(*init));
|
|
if (!access_ok(VERIFY_WRITE, init, sizeof(*init))
|
|
|| __put_user(init32.func, &init->func)
|
|
|| __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset)
|
|
|| __put_user(init32.chipset, &init->chipset)
|
|
|| __put_user(init32.sgram, &init->sgram)
|
|
|| __put_user(init32.maccess, &init->maccess)
|
|
|| __put_user(init32.fb_cpp, &init->fb_cpp)
|
|
|| __put_user(init32.front_offset, &init->front_offset)
|
|
|| __put_user(init32.front_pitch, &init->front_pitch)
|
|
|| __put_user(init32.back_offset, &init->back_offset)
|
|
|| __put_user(init32.back_pitch, &init->back_pitch)
|
|
|| __put_user(init32.depth_cpp, &init->depth_cpp)
|
|
|| __put_user(init32.depth_offset, &init->depth_offset)
|
|
|| __put_user(init32.depth_pitch, &init->depth_pitch)
|
|
|| __put_user(init32.fb_offset, &init->fb_offset)
|
|
|| __put_user(init32.mmio_offset, &init->mmio_offset)
|
|
|| __put_user(init32.status_offset, &init->status_offset)
|
|
|| __put_user(init32.warp_offset, &init->warp_offset)
|
|
|| __put_user(init32.primary_offset, &init->primary_offset)
|
|
|| __put_user(init32.buffers_offset, &init->buffers_offset))
|
|
return -EFAULT;
|
|
|
|
for (i = 0; i < MGA_NR_TEX_HEAPS; i++) {
|
|
err |=
|
|
__put_user(init32.texture_offset[i],
|
|
&init->texture_offset[i]);
|
|
err |=
|
|
__put_user(init32.texture_size[i], &init->texture_size[i]);
|
|
}
|
|
if (err)
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_MGA_INIT, (unsigned long)init);
|
|
}
|
|
|
|
typedef struct drm_mga_getparam32 {
|
|
int param;
|
|
u32 value;
|
|
} drm_mga_getparam32_t;
|
|
|
|
static int compat_mga_getparam(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_mga_getparam32_t getparam32;
|
|
drm_mga_getparam_t __user *getparam;
|
|
|
|
if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32)))
|
|
return -EFAULT;
|
|
|
|
getparam = compat_alloc_user_space(sizeof(*getparam));
|
|
if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam))
|
|
|| __put_user(getparam32.param, &getparam->param)
|
|
|| __put_user((void __user *)(unsigned long)getparam32.value,
|
|
&getparam->value))
|
|
return -EFAULT;
|
|
|
|
return drm_ioctl(file, DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam);
|
|
}
|
|
|
|
typedef struct drm_mga_drm_bootstrap32 {
|
|
u32 texture_handle;
|
|
u32 texture_size;
|
|
u32 primary_size;
|
|
u32 secondary_bin_count;
|
|
u32 secondary_bin_size;
|
|
u32 agp_mode;
|
|
u8 agp_size;
|
|
} drm_mga_dma_bootstrap32_t;
|
|
|
|
static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_mga_dma_bootstrap32_t dma_bootstrap32;
|
|
drm_mga_dma_bootstrap_t __user *dma_bootstrap;
|
|
int err;
|
|
|
|
if (copy_from_user(&dma_bootstrap32, (void __user *)arg,
|
|
sizeof(dma_bootstrap32)))
|
|
return -EFAULT;
|
|
|
|
dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap));
|
|
if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap))
|
|
|| __put_user(dma_bootstrap32.texture_handle,
|
|
&dma_bootstrap->texture_handle)
|
|
|| __put_user(dma_bootstrap32.texture_size,
|
|
&dma_bootstrap->texture_size)
|
|
|| __put_user(dma_bootstrap32.primary_size,
|
|
&dma_bootstrap->primary_size)
|
|
|| __put_user(dma_bootstrap32.secondary_bin_count,
|
|
&dma_bootstrap->secondary_bin_count)
|
|
|| __put_user(dma_bootstrap32.secondary_bin_size,
|
|
&dma_bootstrap->secondary_bin_size)
|
|
|| __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode)
|
|
|| __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size))
|
|
return -EFAULT;
|
|
|
|
err = drm_ioctl(file, DRM_IOCTL_MGA_DMA_BOOTSTRAP,
|
|
(unsigned long)dma_bootstrap);
|
|
if (err)
|
|
return err;
|
|
|
|
if (__get_user(dma_bootstrap32.texture_handle,
|
|
&dma_bootstrap->texture_handle)
|
|
|| __get_user(dma_bootstrap32.texture_size,
|
|
&dma_bootstrap->texture_size)
|
|
|| __get_user(dma_bootstrap32.primary_size,
|
|
&dma_bootstrap->primary_size)
|
|
|| __get_user(dma_bootstrap32.secondary_bin_count,
|
|
&dma_bootstrap->secondary_bin_count)
|
|
|| __get_user(dma_bootstrap32.secondary_bin_size,
|
|
&dma_bootstrap->secondary_bin_size)
|
|
|| __get_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode)
|
|
|| __get_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size))
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user((void __user *)arg, &dma_bootstrap32,
|
|
sizeof(dma_bootstrap32)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
drm_ioctl_compat_t *mga_compat_ioctls[] = {
|
|
[DRM_MGA_INIT] = compat_mga_init,
|
|
[DRM_MGA_GETPARAM] = compat_mga_getparam,
|
|
[DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap,
|
|
};
|
|
|
|
/**
|
|
* 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 mga_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(mga_compat_ioctls))
|
|
fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE];
|
|
|
|
if (fn != NULL)
|
|
ret = (*fn) (filp, cmd, arg);
|
|
else
|
|
ret = drm_ioctl(filp, cmd, arg);
|
|
|
|
return ret;
|
|
}
|