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8ca7c1df DA |
1 | /** |
2 | * \file r128_ioc32.c | |
3 | * | |
4 | * 32-bit ioctl compatibility routines for the R128 DRM. | |
5 | * | |
6 | * \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich | |
7 | * | |
8 | * Copyright (C) Paul Mackerras 2005 | |
9 | * Copyright (C) Egbert Eich 2003,2004 | |
10 | * Copyright (C) Dave Airlie 2005 | |
11 | * All Rights Reserved. | |
12 | * | |
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: | |
19 | * | |
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 | |
22 | * Software. | |
23 | * | |
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 | |
30 | * IN THE SOFTWARE. | |
31 | */ | |
32 | #include <linux/compat.h> | |
8ca7c1df DA |
33 | |
34 | #include "drmP.h" | |
35 | #include "drm.h" | |
36 | #include "r128_drm.h" | |
37 | ||
38 | typedef struct drm_r128_init32 { | |
39 | int func; | |
40 | unsigned int sarea_priv_offset; | |
41 | int is_pci; | |
42 | int cce_mode; | |
43 | int cce_secure; | |
44 | int ring_size; | |
45 | int usec_timeout; | |
46 | ||
47 | unsigned int fb_bpp; | |
48 | unsigned int front_offset, front_pitch; | |
49 | unsigned int back_offset, back_pitch; | |
50 | unsigned int depth_bpp; | |
51 | unsigned int depth_offset, depth_pitch; | |
52 | unsigned int span_offset; | |
53 | ||
54 | unsigned int fb_offset; | |
55 | unsigned int mmio_offset; | |
56 | unsigned int ring_offset; | |
57 | unsigned int ring_rptr_offset; | |
58 | unsigned int buffers_offset; | |
59 | unsigned int agp_textures_offset; | |
60 | } drm_r128_init32_t; | |
61 | ||
62 | static int compat_r128_init(struct file *file, unsigned int cmd, | |
63 | unsigned long arg) | |
64 | { | |
65 | drm_r128_init32_t init32; | |
66 | drm_r128_init_t __user *init; | |
b5e89ed5 | 67 | |
8ca7c1df DA |
68 | if (copy_from_user(&init32, (void __user *)arg, sizeof(init32))) |
69 | return -EFAULT; | |
b5e89ed5 | 70 | |
8ca7c1df DA |
71 | init = compat_alloc_user_space(sizeof(*init)); |
72 | if (!access_ok(VERIFY_WRITE, init, sizeof(*init)) | |
73 | || __put_user(init32.func, &init->func) | |
74 | || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset) | |
75 | || __put_user(init32.is_pci, &init->is_pci) | |
76 | || __put_user(init32.cce_mode, &init->cce_mode) | |
77 | || __put_user(init32.cce_secure, &init->cce_secure) | |
78 | || __put_user(init32.ring_size, &init->ring_size) | |
79 | || __put_user(init32.usec_timeout, &init->usec_timeout) | |
80 | || __put_user(init32.fb_bpp, &init->fb_bpp) | |
81 | || __put_user(init32.front_offset, &init->front_offset) | |
82 | || __put_user(init32.front_pitch, &init->front_pitch) | |
83 | || __put_user(init32.back_offset, &init->back_offset) | |
84 | || __put_user(init32.back_pitch, &init->back_pitch) | |
85 | || __put_user(init32.depth_bpp, &init->depth_bpp) | |
86 | || __put_user(init32.depth_offset, &init->depth_offset) | |
87 | || __put_user(init32.depth_pitch, &init->depth_pitch) | |
88 | || __put_user(init32.span_offset, &init->span_offset) | |
89 | || __put_user(init32.fb_offset, &init->fb_offset) | |
90 | || __put_user(init32.mmio_offset, &init->mmio_offset) | |
91 | || __put_user(init32.ring_offset, &init->ring_offset) | |
92 | || __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset) | |
93 | || __put_user(init32.buffers_offset, &init->buffers_offset) | |
b5e89ed5 DA |
94 | || __put_user(init32.agp_textures_offset, |
95 | &init->agp_textures_offset)) | |
8ca7c1df | 96 | return -EFAULT; |
b5e89ed5 | 97 | |
8ca7c1df DA |
98 | return drm_ioctl(file->f_dentry->d_inode, file, |
99 | DRM_IOCTL_R128_INIT, (unsigned long)init); | |
100 | } | |
101 | ||
8ca7c1df DA |
102 | typedef struct drm_r128_depth32 { |
103 | int func; | |
104 | int n; | |
105 | u32 x; | |
106 | u32 y; | |
107 | u32 buffer; | |
108 | u32 mask; | |
109 | } drm_r128_depth32_t; | |
110 | ||
111 | static int compat_r128_depth(struct file *file, unsigned int cmd, | |
112 | unsigned long arg) | |
113 | { | |
114 | drm_r128_depth32_t depth32; | |
115 | drm_r128_depth_t __user *depth; | |
116 | ||
117 | if (copy_from_user(&depth32, (void __user *)arg, sizeof(depth32))) | |
118 | return -EFAULT; | |
119 | ||
120 | depth = compat_alloc_user_space(sizeof(*depth)); | |
121 | if (!access_ok(VERIFY_WRITE, depth, sizeof(*depth)) | |
122 | || __put_user(depth32.func, &depth->func) | |
123 | || __put_user(depth32.n, &depth->n) | |
124 | || __put_user((int __user *)(unsigned long)depth32.x, &depth->x) | |
125 | || __put_user((int __user *)(unsigned long)depth32.y, &depth->y) | |
b5e89ed5 DA |
126 | || __put_user((unsigned int __user *)(unsigned long)depth32.buffer, |
127 | &depth->buffer) | |
128 | || __put_user((unsigned char __user *)(unsigned long)depth32.mask, | |
129 | &depth->mask)) | |
8ca7c1df | 130 | return -EFAULT; |
b5e89ed5 | 131 | |
8ca7c1df | 132 | return drm_ioctl(file->f_dentry->d_inode, file, |
b5e89ed5 DA |
133 | DRM_IOCTL_R128_DEPTH, (unsigned long)depth); |
134 | ||
8ca7c1df DA |
135 | } |
136 | ||
137 | typedef struct drm_r128_stipple32 { | |
138 | u32 mask; | |
139 | } drm_r128_stipple32_t; | |
140 | ||
141 | static int compat_r128_stipple(struct file *file, unsigned int cmd, | |
142 | unsigned long arg) | |
143 | { | |
144 | drm_r128_stipple32_t stipple32; | |
145 | drm_r128_stipple_t __user *stipple; | |
146 | ||
147 | if (copy_from_user(&stipple32, (void __user *)arg, sizeof(stipple32))) | |
148 | return -EFAULT; | |
149 | ||
150 | stipple = compat_alloc_user_space(sizeof(*stipple)); | |
151 | if (!access_ok(VERIFY_WRITE, stipple, sizeof(*stipple)) | |
b5e89ed5 DA |
152 | || __put_user((unsigned int __user *)(unsigned long)stipple32.mask, |
153 | &stipple->mask)) | |
8ca7c1df DA |
154 | return -EFAULT; |
155 | ||
156 | return drm_ioctl(file->f_dentry->d_inode, file, | |
157 | DRM_IOCTL_R128_STIPPLE, (unsigned long)stipple); | |
158 | } | |
159 | ||
160 | typedef struct drm_r128_getparam32 { | |
161 | int param; | |
162 | u32 value; | |
163 | } drm_r128_getparam32_t; | |
164 | ||
165 | static int compat_r128_getparam(struct file *file, unsigned int cmd, | |
166 | unsigned long arg) | |
167 | { | |
168 | drm_r128_getparam32_t getparam32; | |
169 | drm_r128_getparam_t __user *getparam; | |
170 | ||
171 | if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) | |
172 | return -EFAULT; | |
173 | ||
174 | getparam = compat_alloc_user_space(sizeof(*getparam)); | |
175 | if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam)) | |
176 | || __put_user(getparam32.param, &getparam->param) | |
b5e89ed5 DA |
177 | || __put_user((void __user *)(unsigned long)getparam32.value, |
178 | &getparam->value)) | |
8ca7c1df | 179 | return -EFAULT; |
b5e89ed5 | 180 | |
8ca7c1df DA |
181 | return drm_ioctl(file->f_dentry->d_inode, file, |
182 | DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam); | |
183 | } | |
184 | ||
185 | drm_ioctl_compat_t *r128_compat_ioctls[] = { | |
186 | [DRM_R128_INIT] = compat_r128_init, | |
187 | [DRM_R128_DEPTH] = compat_r128_depth, | |
188 | [DRM_R128_STIPPLE] = compat_r128_stipple, | |
189 | [DRM_R128_GETPARAM] = compat_r128_getparam, | |
190 | }; | |
191 | ||
192 | /** | |
193 | * Called whenever a 32-bit process running under a 64-bit kernel | |
194 | * performs an ioctl on /dev/dri/card<n>. | |
195 | * | |
196 | * \param filp file pointer. | |
197 | * \param cmd command. | |
198 | * \param arg user argument. | |
199 | * \return zero on success or negative number on failure. | |
200 | */ | |
b5e89ed5 | 201 | long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
8ca7c1df DA |
202 | { |
203 | unsigned int nr = DRM_IOCTL_NR(cmd); | |
204 | drm_ioctl_compat_t *fn = NULL; | |
205 | int ret; | |
206 | ||
207 | if (nr < DRM_COMMAND_BASE) | |
208 | return drm_compat_ioctl(filp, cmd, arg); | |
209 | ||
210 | if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(r128_compat_ioctls)) | |
211 | fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE]; | |
212 | ||
213 | lock_kernel(); /* XXX for now */ | |
214 | if (fn != NULL) | |
b5e89ed5 | 215 | ret = (*fn) (filp, cmd, arg); |
8ca7c1df DA |
216 | else |
217 | ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg); | |
218 | unlock_kernel(); | |
219 | ||
220 | return ret; | |
221 | } |