r128_ioc32.c revision 1.2
1 /* $NetBSD: r128_ioc32.c,v 1.2 2018/08/27 04:58:35 riastradh Exp $ */ 2 3 /** 4 * \file r128_ioc32.c 5 * 6 * 32-bit ioctl compatibility routines for the R128 DRM. 7 * 8 * \author Dave Airlie <airlied (at) linux.ie> with code from patches by Egbert Eich 9 * 10 * Copyright (C) Paul Mackerras 2005 11 * Copyright (C) Egbert Eich 2003,2004 12 * Copyright (C) Dave Airlie 2005 13 * All Rights Reserved. 14 * 15 * Permission is hereby granted, free of charge, to any person obtaining a 16 * copy of this software and associated documentation files (the "Software"), 17 * to deal in the Software without restriction, including without limitation 18 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 19 * and/or sell copies of the Software, and to permit persons to whom the 20 * Software is furnished to do so, subject to the following conditions: 21 * 22 * The above copyright notice and this permission notice (including the next 23 * paragraph) shall be included in all copies or substantial portions of the 24 * Software. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 29 * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 30 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 31 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 32 * IN THE SOFTWARE. 33 */ 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: r128_ioc32.c,v 1.2 2018/08/27 04:58:35 riastradh Exp $"); 36 37 #include <linux/compat.h> 38 39 #include <drm/drmP.h> 40 #include <drm/r128_drm.h> 41 #include "r128_drv.h" 42 43 typedef struct drm_r128_init32 { 44 int func; 45 unsigned int sarea_priv_offset; 46 int is_pci; 47 int cce_mode; 48 int cce_secure; 49 int ring_size; 50 int usec_timeout; 51 52 unsigned int fb_bpp; 53 unsigned int front_offset, front_pitch; 54 unsigned int back_offset, back_pitch; 55 unsigned int depth_bpp; 56 unsigned int depth_offset, depth_pitch; 57 unsigned int span_offset; 58 59 unsigned int fb_offset; 60 unsigned int mmio_offset; 61 unsigned int ring_offset; 62 unsigned int ring_rptr_offset; 63 unsigned int buffers_offset; 64 unsigned int agp_textures_offset; 65 } drm_r128_init32_t; 66 67 static int compat_r128_init(struct file *file, unsigned int cmd, 68 unsigned long arg) 69 { 70 drm_r128_init32_t init32; 71 drm_r128_init_t __user *init; 72 73 if (copy_from_user(&init32, (void __user *)arg, sizeof(init32))) 74 return -EFAULT; 75 76 init = compat_alloc_user_space(sizeof(*init)); 77 if (!access_ok(VERIFY_WRITE, init, sizeof(*init)) 78 || __put_user(init32.func, &init->func) 79 || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset) 80 || __put_user(init32.is_pci, &init->is_pci) 81 || __put_user(init32.cce_mode, &init->cce_mode) 82 || __put_user(init32.cce_secure, &init->cce_secure) 83 || __put_user(init32.ring_size, &init->ring_size) 84 || __put_user(init32.usec_timeout, &init->usec_timeout) 85 || __put_user(init32.fb_bpp, &init->fb_bpp) 86 || __put_user(init32.front_offset, &init->front_offset) 87 || __put_user(init32.front_pitch, &init->front_pitch) 88 || __put_user(init32.back_offset, &init->back_offset) 89 || __put_user(init32.back_pitch, &init->back_pitch) 90 || __put_user(init32.depth_bpp, &init->depth_bpp) 91 || __put_user(init32.depth_offset, &init->depth_offset) 92 || __put_user(init32.depth_pitch, &init->depth_pitch) 93 || __put_user(init32.span_offset, &init->span_offset) 94 || __put_user(init32.fb_offset, &init->fb_offset) 95 || __put_user(init32.mmio_offset, &init->mmio_offset) 96 || __put_user(init32.ring_offset, &init->ring_offset) 97 || __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset) 98 || __put_user(init32.buffers_offset, &init->buffers_offset) 99 || __put_user(init32.agp_textures_offset, 100 &init->agp_textures_offset)) 101 return -EFAULT; 102 103 return drm_ioctl(file, DRM_IOCTL_R128_INIT, (unsigned long)init); 104 } 105 106 typedef struct drm_r128_depth32 { 107 int func; 108 int n; 109 u32 x; 110 u32 y; 111 u32 buffer; 112 u32 mask; 113 } drm_r128_depth32_t; 114 115 static int compat_r128_depth(struct file *file, unsigned int cmd, 116 unsigned long arg) 117 { 118 drm_r128_depth32_t depth32; 119 drm_r128_depth_t __user *depth; 120 121 if (copy_from_user(&depth32, (void __user *)arg, sizeof(depth32))) 122 return -EFAULT; 123 124 depth = compat_alloc_user_space(sizeof(*depth)); 125 if (!access_ok(VERIFY_WRITE, depth, sizeof(*depth)) 126 || __put_user(depth32.func, &depth->func) 127 || __put_user(depth32.n, &depth->n) 128 || __put_user((int __user *)(unsigned long)depth32.x, &depth->x) 129 || __put_user((int __user *)(unsigned long)depth32.y, &depth->y) 130 || __put_user((unsigned int __user *)(unsigned long)depth32.buffer, 131 &depth->buffer) 132 || __put_user((unsigned char __user *)(unsigned long)depth32.mask, 133 &depth->mask)) 134 return -EFAULT; 135 136 return drm_ioctl(file, DRM_IOCTL_R128_DEPTH, (unsigned long)depth); 137 138 } 139 140 typedef struct drm_r128_stipple32 { 141 u32 mask; 142 } drm_r128_stipple32_t; 143 144 static int compat_r128_stipple(struct file *file, unsigned int cmd, 145 unsigned long arg) 146 { 147 drm_r128_stipple32_t stipple32; 148 drm_r128_stipple_t __user *stipple; 149 150 if (copy_from_user(&stipple32, (void __user *)arg, sizeof(stipple32))) 151 return -EFAULT; 152 153 stipple = compat_alloc_user_space(sizeof(*stipple)); 154 if (!access_ok(VERIFY_WRITE, stipple, sizeof(*stipple)) 155 || __put_user((unsigned int __user *)(unsigned long)stipple32.mask, 156 &stipple->mask)) 157 return -EFAULT; 158 159 return drm_ioctl(file, DRM_IOCTL_R128_STIPPLE, (unsigned long)stipple); 160 } 161 162 typedef struct drm_r128_getparam32 { 163 int param; 164 u32 value; 165 } drm_r128_getparam32_t; 166 167 static int compat_r128_getparam(struct file *file, unsigned int cmd, 168 unsigned long arg) 169 { 170 drm_r128_getparam32_t getparam32; 171 drm_r128_getparam_t __user *getparam; 172 173 if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) 174 return -EFAULT; 175 176 getparam = compat_alloc_user_space(sizeof(*getparam)); 177 if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam)) 178 || __put_user(getparam32.param, &getparam->param) 179 || __put_user((void __user *)(unsigned long)getparam32.value, 180 &getparam->value)) 181 return -EFAULT; 182 183 return drm_ioctl(file, DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam); 184 } 185 186 drm_ioctl_compat_t *r128_compat_ioctls[] = { 187 [DRM_R128_INIT] = compat_r128_init, 188 [DRM_R128_DEPTH] = compat_r128_depth, 189 [DRM_R128_STIPPLE] = compat_r128_stipple, 190 [DRM_R128_GETPARAM] = compat_r128_getparam, 191 }; 192 193 /** 194 * Called whenever a 32-bit process running under a 64-bit kernel 195 * performs an ioctl on /dev/dri/card<n>. 196 * 197 * \param filp file pointer. 198 * \param cmd command. 199 * \param arg user argument. 200 * \return zero on success or negative number on failure. 201 */ 202 long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 203 { 204 unsigned int nr = DRM_IOCTL_NR(cmd); 205 drm_ioctl_compat_t *fn = NULL; 206 int ret; 207 208 if (nr < DRM_COMMAND_BASE) 209 return drm_compat_ioctl(filp, cmd, arg); 210 211 if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(r128_compat_ioctls)) 212 fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE]; 213 214 if (fn != NULL) 215 ret = (*fn) (filp, cmd, arg); 216 else 217 ret = drm_ioctl(filp, cmd, arg); 218 219 return ret; 220 } 221
Indexes created Wed Oct 22 13:09:56 GMT 2025