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drm: add 32/64 support for MGA/R128/i915 

This adds compatiblity ioctls for mga/r128 and i915 DRM drivers.

From: Paul Mackerras, David Airlie, Alan Hourihane, Egbert Eich.
Signed-off-by: David Airlie <airlied@linux.ie>
hifive-unleashed-5.1
Dave Airlie 2005-07-07 21:51:26 +10:00 committed by Dave Airlie
parent c101f3136c
commit 8ca7c1df08
10 changed files with 628 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/char/drm/Makefile
View File

@ -22,6 +22,9 @@ sis-objs := sis_drv.o sis_ds.o sis_mm.o
ifeq ($(CONFIG_COMPAT),y)
drm-objs += drm_ioc32.o
radeon-objs += radeon_ioc32.o
mga-objs += mga_ioc32.o
r128-objs += r128_ioc32.o
i915-objs += i915_ioc32.o
endif
obj-$(CONFIG_DRM) += drm.o

3
drivers/char/drm/i915_drv.c
View File

@ -97,6 +97,9 @@ static struct drm_driver driver = {
.mmap = drm_mmap,
.poll = drm_poll,
.fasync = drm_fasync,
#ifdef CONFIG_COMPAT
.compat_ioctl = i915_compat_ioctl,
#endif
},
.pci_driver = {
.name = DRIVER_NAME,

4
drivers/char/drm/i915_drv.h
View File

@ -130,6 +130,10 @@ extern void i915_mem_takedown(struct mem_block **heap);
extern void i915_mem_release(drm_device_t * dev,
DRMFILE filp, struct mem_block *heap);
extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
#define I915_READ(reg) DRM_READ32(dev_priv->mmio_map, reg)
#define I915_WRITE(reg,val) DRM_WRITE32(dev_priv->mmio_map, reg, val)
#define I915_READ16(reg) DRM_READ16(dev_priv->mmio_map, reg)

221
drivers/char/drm/i915_ioc32.c 100644
View File

@ -0,0 +1,221 @@
/**
* \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 <linux/ioctl32.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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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->f_dentry->d_inode, 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];
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;
}

3
drivers/char/drm/mga_drv.c
View File

@ -101,6 +101,9 @@ static struct drm_driver driver = {
.mmap = drm_mmap,
.poll = drm_poll,
.fasync = drm_fasync,
#ifdef CONFIG_COMPAT
.compat_ioctl = mga_compat_ioctl,
#endif
},
.pci_driver = {
.name = DRIVER_NAME,

2
drivers/char/drm/mga_drv.h
View File

@ -137,6 +137,8 @@ extern irqreturn_t mga_driver_irq_handler( DRM_IRQ_ARGS );
extern void mga_driver_irq_preinstall( drm_device_t *dev );
extern void mga_driver_irq_postinstall( drm_device_t *dev );
extern void mga_driver_irq_uninstall( drm_device_t *dev );
extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
#define mga_flush_write_combine() DRM_WRITEMEMORYBARRIER()

167
drivers/char/drm/mga_ioc32.c 100644
View File

@ -0,0 +1,167 @@
/**
* \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 <linux/ioctl32.h>
#include "drmP.h"
#include "drm.h"
#include "mga_drm.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->f_dentry->d_inode, 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->f_dentry->d_inode, file,
DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam);
}
drm_ioctl_compat_t *mga_compat_ioctls[] = {
[DRM_MGA_INIT] = compat_mga_init,
[DRM_MGA_GETPARAM] = compat_mga_getparam,
};
/**
* 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];
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;
}

3
drivers/char/drm/r128_drv.c
View File

@ -96,6 +96,9 @@ static struct drm_driver driver = {
.mmap = drm_mmap,
.poll = drm_poll,
.fasync = drm_fasync,
#ifdef CONFIG_COMPAT
.compat_ioctl = r128_compat_ioctl,
#endif
},
.pci_driver = {
.name = DRIVER_NAME,

3
drivers/char/drm/r128_drv.h
View File

@ -156,6 +156,9 @@ extern void r128_driver_irq_uninstall( drm_device_t *dev );
extern void r128_driver_pretakedown(drm_device_t *dev);
extern void r128_driver_prerelease(drm_device_t *dev, DRMFILE filp);
extern long r128_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
/* Register definitions, register access macros and drmAddMap constants
* for Rage 128 kernel driver.
*/

219
drivers/char/drm/r128_ioc32.c 100644
View File

@ -0,0 +1,219 @@
/**
* \file r128_ioc32.c
*
* 32-bit ioctl compatibility routines for the R128 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 <linux/ioctl32.h>
#include "drmP.h"
#include "drm.h"
#include "r128_drm.h"
typedef struct drm_r128_init32 {
int func;
unsigned int sarea_priv_offset;
int is_pci;
int cce_mode;
int cce_secure;
int ring_size;
int usec_timeout;
unsigned int fb_bpp;
unsigned int front_offset, front_pitch;
unsigned int back_offset, back_pitch;
unsigned int depth_bpp;
unsigned int depth_offset, depth_pitch;
unsigned int span_offset;
unsigned int fb_offset;
unsigned int mmio_offset;
unsigned int ring_offset;
unsigned int ring_rptr_offset;
unsigned int buffers_offset;
unsigned int agp_textures_offset;
} drm_r128_init32_t;
static int compat_r128_init(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_r128_init32_t init32;
drm_r128_init_t __user *init;
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.is_pci, &init->is_pci)
|| __put_user(init32.cce_mode, &init->cce_mode)
|| __put_user(init32.cce_secure, &init->cce_secure)
|| __put_user(init32.ring_size, &init->ring_size)
|| __put_user(init32.usec_timeout, &init->usec_timeout)
|| __put_user(init32.fb_bpp, &init->fb_bpp)
|| __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_bpp, &init->depth_bpp)
|| __put_user(init32.depth_offset, &init->depth_offset)
|| __put_user(init32.depth_pitch, &init->depth_pitch)
|| __put_user(init32.span_offset, &init->span_offset)
|| __put_user(init32.fb_offset, &init->fb_offset)
|| __put_user(init32.mmio_offset, &init->mmio_offset)
|| __put_user(init32.ring_offset, &init->ring_offset)
|| __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset)
|| __put_user(init32.buffers_offset, &init->buffers_offset)
|| __put_user(init32.agp_textures_offset, &init->agp_textures_offset))
return -EFAULT;
return drm_ioctl(file->f_dentry->d_inode, file,
DRM_IOCTL_R128_INIT, (unsigned long)init);
}
typedef struct drm_r128_depth32 {
int func;
int n;
u32 x;
u32 y;
u32 buffer;
u32 mask;
} drm_r128_depth32_t;
static int compat_r128_depth(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_r128_depth32_t depth32;
drm_r128_depth_t __user *depth;
if (copy_from_user(&depth32, (void __user *)arg, sizeof(depth32)))
return -EFAULT;
depth = compat_alloc_user_space(sizeof(*depth));
if (!access_ok(VERIFY_WRITE, depth, sizeof(*depth))
|| __put_user(depth32.func, &depth->func)
|| __put_user(depth32.n, &depth->n)
|| __put_user((int __user *)(unsigned long)depth32.x, &depth->x)
|| __put_user((int __user *)(unsigned long)depth32.y, &depth->y)
|| __put_user((unsigned int __user *)(unsigned long)depth32.buffer, &depth->buffer)
|| __put_user((unsigned char __user *)(unsigned long)depth32.mask, &depth->mask))
return -EFAULT;
return drm_ioctl(file->f_dentry->d_inode, file,
DRM_IOCTL_R128_DEPTH, (unsigned long)depth);
}
typedef struct drm_r128_stipple32 {
u32 mask;
} drm_r128_stipple32_t;
static int compat_r128_stipple(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_r128_stipple32_t stipple32;
drm_r128_stipple_t __user *stipple;
if (copy_from_user(&stipple32, (void __user *)arg, sizeof(stipple32)))
return -EFAULT;
stipple = compat_alloc_user_space(sizeof(*stipple));
if (!access_ok(VERIFY_WRITE, stipple, sizeof(*stipple))
|| __put_user((unsigned int __user *)(unsigned long)stipple32.mask, &stipple->mask))
return -EFAULT;
return drm_ioctl(file->f_dentry->d_inode, file,
DRM_IOCTL_R128_STIPPLE, (unsigned long)stipple);
}
typedef struct drm_r128_getparam32 {
int param;
u32 value;
} drm_r128_getparam32_t;
static int compat_r128_getparam(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_r128_getparam32_t getparam32;
drm_r128_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->f_dentry->d_inode, file,
DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam);
}
drm_ioctl_compat_t *r128_compat_ioctls[] = {
[DRM_R128_INIT] = compat_r128_init,
[DRM_R128_DEPTH] = compat_r128_depth,
[DRM_R128_STIPPLE] = compat_r128_stipple,
[DRM_R128_GETPARAM] = compat_r128_getparam,
};
/**
* 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 r128_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(r128_compat_ioctls))
fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
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;
}