4 * 32-bit ioctl compatibility routines for the i915 DRM.
6 * \author Alan Hourihane <alanh@fairlite.demon.co.uk>
9 * Copyright (C) Paul Mackerras 2005
10 * Copyright (C) Alan Hourihane 2005
11 * All Rights Reserved.
13 * Permission is hereby granted, free of charge, to any person obtaining a
14 * copy of this software and associated documentation files (the "Software"),
15 * to deal in the Software without restriction, including without limitation
16 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 * and/or sell copies of the Software, and to permit persons to whom the
18 * Software is furnished to do so, subject to the following conditions:
20 * The above copyright notice and this permission notice (including the next
21 * paragraph) shall be included in all copies or substantial portions of the
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27 * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
28 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
32 #include <linux/compat.h>
35 #include <drm/i915_drm.h>
38 typedef struct _drm_i915_batchbuffer32
{
39 int start
; /* agp offset */
40 int used
; /* nr bytes in use */
41 int DR1
; /* hw flags for GFX_OP_DRAWRECT_INFO */
42 int DR4
; /* window origin for GFX_OP_DRAWRECT_INFO */
43 int num_cliprects
; /* mulitpass with multiple cliprects? */
44 u32 cliprects
; /* pointer to userspace cliprects */
45 } drm_i915_batchbuffer32_t
;
47 static int compat_i915_batchbuffer(struct file
*file
, unsigned int cmd
,
50 drm_i915_batchbuffer32_t batchbuffer32
;
51 drm_i915_batchbuffer_t __user
*batchbuffer
;
54 (&batchbuffer32
, (void __user
*)arg
, sizeof(batchbuffer32
)))
57 batchbuffer
= compat_alloc_user_space(sizeof(*batchbuffer
));
58 if (!access_ok(VERIFY_WRITE
, batchbuffer
, sizeof(*batchbuffer
))
59 || __put_user(batchbuffer32
.start
, &batchbuffer
->start
)
60 || __put_user(batchbuffer32
.used
, &batchbuffer
->used
)
61 || __put_user(batchbuffer32
.DR1
, &batchbuffer
->DR1
)
62 || __put_user(batchbuffer32
.DR4
, &batchbuffer
->DR4
)
63 || __put_user(batchbuffer32
.num_cliprects
,
64 &batchbuffer
->num_cliprects
)
65 || __put_user((int __user
*)(unsigned long)batchbuffer32
.cliprects
,
66 &batchbuffer
->cliprects
))
69 return drm_ioctl(file
, DRM_IOCTL_I915_BATCHBUFFER
,
70 (unsigned long)batchbuffer
);
73 typedef struct _drm_i915_cmdbuffer32
{
74 u32 buf
; /* pointer to userspace command buffer */
75 int sz
; /* nr bytes in buf */
76 int DR1
; /* hw flags for GFX_OP_DRAWRECT_INFO */
77 int DR4
; /* window origin for GFX_OP_DRAWRECT_INFO */
78 int num_cliprects
; /* mulitpass with multiple cliprects? */
79 u32 cliprects
; /* pointer to userspace cliprects */
80 } drm_i915_cmdbuffer32_t
;
82 static int compat_i915_cmdbuffer(struct file
*file
, unsigned int cmd
,
85 drm_i915_cmdbuffer32_t cmdbuffer32
;
86 drm_i915_cmdbuffer_t __user
*cmdbuffer
;
89 (&cmdbuffer32
, (void __user
*)arg
, sizeof(cmdbuffer32
)))
92 cmdbuffer
= compat_alloc_user_space(sizeof(*cmdbuffer
));
93 if (!access_ok(VERIFY_WRITE
, cmdbuffer
, sizeof(*cmdbuffer
))
94 || __put_user((int __user
*)(unsigned long)cmdbuffer32
.buf
,
96 || __put_user(cmdbuffer32
.sz
, &cmdbuffer
->sz
)
97 || __put_user(cmdbuffer32
.DR1
, &cmdbuffer
->DR1
)
98 || __put_user(cmdbuffer32
.DR4
, &cmdbuffer
->DR4
)
99 || __put_user(cmdbuffer32
.num_cliprects
, &cmdbuffer
->num_cliprects
)
100 || __put_user((int __user
*)(unsigned long)cmdbuffer32
.cliprects
,
101 &cmdbuffer
->cliprects
))
104 return drm_ioctl(file
, DRM_IOCTL_I915_CMDBUFFER
,
105 (unsigned long)cmdbuffer
);
108 typedef struct drm_i915_irq_emit32
{
110 } drm_i915_irq_emit32_t
;
112 static int compat_i915_irq_emit(struct file
*file
, unsigned int cmd
,
115 drm_i915_irq_emit32_t req32
;
116 drm_i915_irq_emit_t __user
*request
;
118 if (copy_from_user(&req32
, (void __user
*)arg
, sizeof(req32
)))
121 request
= compat_alloc_user_space(sizeof(*request
));
122 if (!access_ok(VERIFY_WRITE
, request
, sizeof(*request
))
123 || __put_user((int __user
*)(unsigned long)req32
.irq_seq
,
127 return drm_ioctl(file
, DRM_IOCTL_I915_IRQ_EMIT
,
128 (unsigned long)request
);
130 typedef struct drm_i915_getparam32
{
133 } drm_i915_getparam32_t
;
135 static int compat_i915_getparam(struct file
*file
, unsigned int cmd
,
138 drm_i915_getparam32_t req32
;
139 drm_i915_getparam_t __user
*request
;
141 if (copy_from_user(&req32
, (void __user
*)arg
, sizeof(req32
)))
144 request
= compat_alloc_user_space(sizeof(*request
));
145 if (!access_ok(VERIFY_WRITE
, request
, sizeof(*request
))
146 || __put_user(req32
.param
, &request
->param
)
147 || __put_user((void __user
*)(unsigned long)req32
.value
,
151 return drm_ioctl(file
, DRM_IOCTL_I915_GETPARAM
,
152 (unsigned long)request
);
155 typedef struct drm_i915_mem_alloc32
{
159 u32 region_offset
; /* offset from start of fb or agp */
160 } drm_i915_mem_alloc32_t
;
162 static int compat_i915_alloc(struct file
*file
, unsigned int cmd
,
165 drm_i915_mem_alloc32_t req32
;
166 drm_i915_mem_alloc_t __user
*request
;
168 if (copy_from_user(&req32
, (void __user
*)arg
, sizeof(req32
)))
171 request
= compat_alloc_user_space(sizeof(*request
));
172 if (!access_ok(VERIFY_WRITE
, request
, sizeof(*request
))
173 || __put_user(req32
.region
, &request
->region
)
174 || __put_user(req32
.alignment
, &request
->alignment
)
175 || __put_user(req32
.size
, &request
->size
)
176 || __put_user((void __user
*)(unsigned long)req32
.region_offset
,
177 &request
->region_offset
))
180 return drm_ioctl(file
, DRM_IOCTL_I915_ALLOC
,
181 (unsigned long)request
);
184 static drm_ioctl_compat_t
*i915_compat_ioctls
[] = {
185 [DRM_I915_BATCHBUFFER
] = compat_i915_batchbuffer
,
186 [DRM_I915_CMDBUFFER
] = compat_i915_cmdbuffer
,
187 [DRM_I915_GETPARAM
] = compat_i915_getparam
,
188 [DRM_I915_IRQ_EMIT
] = compat_i915_irq_emit
,
189 [DRM_I915_ALLOC
] = compat_i915_alloc
194 * Called whenever a 32-bit process running under a 64-bit kernel
195 * performs an ioctl on /dev/dri/card<n>.
197 * \param filp file pointer.
198 * \param cmd command.
199 * \param arg user argument.
200 * \return zero on success or negative number on failure.
202 long i915_compat_ioctl(struct file
*filp
, unsigned int cmd
, unsigned long arg
)
204 unsigned int nr
= DRM_IOCTL_NR(cmd
);
205 drm_ioctl_compat_t
*fn
= NULL
;
208 if (nr
< DRM_COMMAND_BASE
)
209 return drm_compat_ioctl(filp
, cmd
, arg
);
211 if (nr
< DRM_COMMAND_BASE
+ ARRAY_SIZE(i915_compat_ioctls
))
212 fn
= i915_compat_ioctls
[nr
- DRM_COMMAND_BASE
];
215 ret
= (*fn
) (filp
, cmd
, arg
);
217 ret
= drm_ioctl(filp
, cmd
, arg
);