r128_ioc32.c revision 1.1.1.1
1 /** 2 * \file r128_ioc32.c 3 * 4 * 32-bit ioctl compatibility routines for the R128 DRM. 5 * 6 * \author Dave Airlie <airlied (at) 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> 33 34 #include <drm/drmP.h> 35 #include <drm/r128_drm.h> 36 37 typedef struct drm_r128_init32 { 38 int func; 39 unsigned int sarea_priv_offset; 40 int is_pci; 41 int cce_mode; 42 int cce_secure; 43 int ring_size; 44 int usec_timeout; 45 46 unsigned int fb_bpp; 47 unsigned int front_offset, front_pitch; 48 unsigned int back_offset, back_pitch; 49 unsigned int depth_bpp; 50 unsigned int depth_offset, depth_pitch; 51 unsigned int span_offset; 52 53 unsigned int fb_offset; 54 unsigned int mmio_offset; 55 unsigned int ring_offset; 56 unsigned int ring_rptr_offset; 57 unsigned int buffers_offset; 58 unsigned int agp_textures_offset; 59 } drm_r128_init32_t; 60 61 static int compat_r128_init(struct file *file, unsigned int cmd, 62 unsigned long arg) 63 { 64 drm_r128_init32_t init32; 65 drm_r128_init_t __user *init; 66 67 if (copy_from_user(&init32, (void __user *)arg, sizeof(init32))) 68 return -EFAULT; 69 70 init = compat_alloc_user_space(sizeof(*init)); 71 if (!access_ok(VERIFY_WRITE, init, sizeof(*init)) 72 || __put_user(init32.func, &init->func) 73 || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset) 74 || __put_user(init32.is_pci, &init->is_pci) 75 || __put_user(init32.cce_mode, &init->cce_mode) 76 || __put_user(init32.cce_secure, &init->cce_secure) 77 || __put_user(init32.ring_size, &init->ring_size) 78 || __put_user(init32.usec_timeout, &init->usec_timeout) 79 || __put_user(init32.fb_bpp, &init->fb_bpp) 80 || __put_user(init32.front_offset, &init->front_offset) 81 || __put_user(init32.front_pitch, &init->front_pitch) 82 || __put_user(init32.back_offset, &init->back_offset) 83 || __put_user(init32.back_pitch, &init->back_pitch) 84 || __put_user(init32.depth_bpp, &init->depth_bpp) 85 || __put_user(init32.depth_offset, &init->depth_offset) 86 || __put_user(init32.depth_pitch, &init->depth_pitch) 87 || __put_user(init32.span_offset, &init->span_offset) 88 || __put_user(init32.fb_offset, &init->fb_offset) 89 || __put_user(init32.mmio_offset, &init->mmio_offset) 90 || __put_user(init32.ring_offset, &init->ring_offset) 91 || __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset) 92 || __put_user(init32.buffers_offset, &init->buffers_offset) 93 || __put_user(init32.agp_textures_offset, 94 &init->agp_textures_offset)) 95 return -EFAULT; 96 97 return drm_ioctl(file, DRM_IOCTL_R128_INIT, (unsigned long)init); 98 } 99 100 typedef struct drm_r128_depth32 { 101 int func; 102 int n; 103 u32 x; 104 u32 y; 105 u32 buffer; 106 u32 mask; 107 } drm_r128_depth32_t; 108 109 static int compat_r128_depth(struct file *file, unsigned int cmd, 110 unsigned long arg) 111 { 112 drm_r128_depth32_t depth32; 113 drm_r128_depth_t __user *depth; 114 115 if (copy_from_user(&depth32, (void __user *)arg, sizeof(depth32))) 116 return -EFAULT; 117 118 depth = compat_alloc_user_space(sizeof(*depth)); 119 if (!access_ok(VERIFY_WRITE, depth, sizeof(*depth)) 120 || __put_user(depth32.func, &depth->func) 121 || __put_user(depth32.n, &depth->n) 122 || __put_user((int __user *)(unsigned long)depth32.x, &depth->x) 123 || __put_user((int __user *)(unsigned long)depth32.y, &depth->y) 124 || __put_user((unsigned int __user *)(unsigned long)depth32.buffer, 125 &depth->buffer) 126 || __put_user((unsigned char __user *)(unsigned long)depth32.mask, 127 &depth->mask)) 128 return -EFAULT; 129 130 return drm_ioctl(file, DRM_IOCTL_R128_DEPTH, (unsigned long)depth); 131 132 } 133 134 typedef struct drm_r128_stipple32 { 135 u32 mask; 136 } drm_r128_stipple32_t; 137 138 static int compat_r128_stipple(struct file *file, unsigned int cmd, 139 unsigned long arg) 140 { 141 drm_r128_stipple32_t stipple32; 142 drm_r128_stipple_t __user *stipple; 143 144 if (copy_from_user(&stipple32, (void __user *)arg, sizeof(stipple32))) 145 return -EFAULT; 146 147 stipple = compat_alloc_user_space(sizeof(*stipple)); 148 if (!access_ok(VERIFY_WRITE, stipple, sizeof(*stipple)) 149 || __put_user((unsigned int __user *)(unsigned long)stipple32.mask, 150 &stipple->mask)) 151 return -EFAULT; 152 153 return drm_ioctl(file, DRM_IOCTL_R128_STIPPLE, (unsigned long)stipple); 154 } 155 156 typedef struct drm_r128_getparam32 { 157 int param; 158 u32 value; 159 } drm_r128_getparam32_t; 160 161 static int compat_r128_getparam(struct file *file, unsigned int cmd, 162 unsigned long arg) 163 { 164 drm_r128_getparam32_t getparam32; 165 drm_r128_getparam_t __user *getparam; 166 167 if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) 168 return -EFAULT; 169 170 getparam = compat_alloc_user_space(sizeof(*getparam)); 171 if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam)) 172 || __put_user(getparam32.param, &getparam->param) 173 || __put_user((void __user *)(unsigned long)getparam32.value, 174 &getparam->value)) 175 return -EFAULT; 176 177 return drm_ioctl(file, DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam); 178 } 179 180 drm_ioctl_compat_t *r128_compat_ioctls[] = { 181 [DRM_R128_INIT] = compat_r128_init, 182 [DRM_R128_DEPTH] = compat_r128_depth, 183 [DRM_R128_STIPPLE] = compat_r128_stipple, 184 [DRM_R128_GETPARAM] = compat_r128_getparam, 185 }; 186 187 /** 188 * Called whenever a 32-bit process running under a 64-bit kernel 189 * performs an ioctl on /dev/dri/card<n>. 190 * 191 * \param filp file pointer. 192 * \param cmd command. 193 * \param arg user argument. 194 * \return zero on success or negative number on failure. 195 */ 196 long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 197 { 198 unsigned int nr = DRM_IOCTL_NR(cmd); 199 drm_ioctl_compat_t *fn = NULL; 200 int ret; 201 202 if (nr < DRM_COMMAND_BASE) 203 return drm_compat_ioctl(filp, cmd, arg); 204 205 if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(r128_compat_ioctls)) 206 fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE]; 207 208 if (fn != NULL) 209 ret = (*fn) (filp, cmd, arg); 210 else 211 ret = drm_ioctl(filp, cmd, arg); 212 213 return ret; 214 } 215
Indexes created Wed Oct 22 13:09:56 GMT 2025