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
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29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
32 #include <linux/compat.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 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
193 * Called whenever a 32-bit process running under a 64-bit kernel
194 * performs an ioctl on /dev/dri/card<n>.
196 * \param filp file pointer.
197 * \param cmd command.
198 * \param arg user argument.
199 * \return zero on success or negative number on failure.
201 long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
203 unsigned int nr = DRM_IOCTL_NR(cmd);
204 drm_ioctl_compat_t *fn = NULL;
207 if (nr < DRM_COMMAND_BASE)
208 return drm_compat_ioctl(filp, cmd, arg);
210 if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(i915_compat_ioctls))
211 fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
214 ret = (*fn) (filp, cmd, arg);
216 ret = drm_ioctl(filp, cmd, arg);