sys/dev/drm2/radeon/radeon_ioc32.c

   1 /**
   2  * \file radeon_ioc32.c
   3  *
   4  * 32-bit ioctl compatibility routines for the Radeon DRM.
   5  *
   6  * \author Paul Mackerras <paulus@samba.org>
   7  *
   8  * Copyright (C) Paul Mackerras 2005
   9  * All Rights Reserved.
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a
  12  * copy of this software and associated documentation files (the "Software"),
  13  * to deal in the Software without restriction, including without limitation
  14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15  * and/or sell copies of the Software, and to permit persons to whom the
  16  * Software is furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice (including the next
  19  * paragraph) shall be included in all copies or substantial portions of the
  20  * Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  26  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  27  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  28  * IN THE SOFTWARE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 #include <linux/compat.h>
  35
  36 #include <drm/drmP.h>
  37 #include <drm/radeon_drm.h>
  38 #include "radeon_drv.h"
  39
  40 typedef struct drm_radeon_init32 {
  41         int func;
  42         u32 sarea_priv_offset;
  43         int is_pci;
  44         int cp_mode;
  45         int gart_size;
  46         int ring_size;
  47         int usec_timeout;
  48
  49         unsigned int fb_bpp;
  50         unsigned int front_offset, front_pitch;
  51         unsigned int back_offset, back_pitch;
  52         unsigned int depth_bpp;
  53         unsigned int depth_offset, depth_pitch;
  54
  55         u32 fb_offset;
  56         u32 mmio_offset;
  57         u32 ring_offset;
  58         u32 ring_rptr_offset;
  59         u32 buffers_offset;
  60         u32 gart_textures_offset;
  61 } drm_radeon_init32_t;
  62
  63 static int compat_radeon_cp_init(struct file *file, unsigned int cmd,
  64                                  unsigned long arg)
  65 {
  66         drm_radeon_init32_t init32;
  67         drm_radeon_init_t __user *init;
  68
  69         if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
  70                 return -EFAULT;
  71
  72         init = compat_alloc_user_space(sizeof(*init));
  73         if (!access_ok(VERIFY_WRITE, init, sizeof(*init))
  74             || __put_user(init32.func, &init->func)
  75             || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset)
  76             || __put_user(init32.is_pci, &init->is_pci)
  77             || __put_user(init32.cp_mode, &init->cp_mode)
  78             || __put_user(init32.gart_size, &init->gart_size)
  79             || __put_user(init32.ring_size, &init->ring_size)
  80             || __put_user(init32.usec_timeout, &init->usec_timeout)
  81             || __put_user(init32.fb_bpp, &init->fb_bpp)
  82             || __put_user(init32.front_offset, &init->front_offset)
  83             || __put_user(init32.front_pitch, &init->front_pitch)
  84             || __put_user(init32.back_offset, &init->back_offset)
  85             || __put_user(init32.back_pitch, &init->back_pitch)
  86             || __put_user(init32.depth_bpp, &init->depth_bpp)
  87             || __put_user(init32.depth_offset, &init->depth_offset)
  88             || __put_user(init32.depth_pitch, &init->depth_pitch)
  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)
  94             || __put_user(init32.gart_textures_offset,
  95                           &init->gart_textures_offset))
  96                 return -EFAULT;
  97
  98         return drm_ioctl(file, DRM_IOCTL_RADEON_CP_INIT, (unsigned long)init);
  99 }
 100
 101 typedef struct drm_radeon_clear32 {
 102         unsigned int flags;
 103         unsigned int clear_color;
 104         unsigned int clear_depth;
 105         unsigned int color_mask;
 106         unsigned int depth_mask;        /* misnamed field:  should be stencil */
 107         u32 depth_boxes;
 108 } drm_radeon_clear32_t;
 109
 110 static int compat_radeon_cp_clear(struct file *file, unsigned int cmd,
 111                                   unsigned long arg)
 112 {
 113         drm_radeon_clear32_t clr32;
 114         drm_radeon_clear_t __user *clr;
 115
 116         if (copy_from_user(&clr32, (void __user *)arg, sizeof(clr32)))
 117                 return -EFAULT;
 118
 119         clr = compat_alloc_user_space(sizeof(*clr));
 120         if (!access_ok(VERIFY_WRITE, clr, sizeof(*clr))
 121             || __put_user(clr32.flags, &clr->flags)
 122             || __put_user(clr32.clear_color, &clr->clear_color)
 123             || __put_user(clr32.clear_depth, &clr->clear_depth)
 124             || __put_user(clr32.color_mask, &clr->color_mask)
 125             || __put_user(clr32.depth_mask, &clr->depth_mask)
 126             || __put_user((void __user *)(unsigned long)clr32.depth_boxes,
 127                           &clr->depth_boxes))
 128                 return -EFAULT;
 129
 130         return drm_ioctl(file, DRM_IOCTL_RADEON_CLEAR, (unsigned long)clr);
 131 }
 132
 133 typedef struct drm_radeon_stipple32 {
 134         u32 mask;
 135 } drm_radeon_stipple32_t;
 136
 137 static int compat_radeon_cp_stipple(struct file *file, unsigned int cmd,
 138                                     unsigned long arg)
 139 {
 140         drm_radeon_stipple32_t __user *argp = (void __user *)arg;
 141         drm_radeon_stipple_t __user *request;
 142         u32 mask;
 143
 144         if (get_user(mask, &argp->mask))
 145                 return -EFAULT;
 146
 147         request = compat_alloc_user_space(sizeof(*request));
 148         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 149             || __put_user((unsigned int __user *)(unsigned long)mask,
 150                           &request->mask))
 151                 return -EFAULT;
 152
 153         return drm_ioctl(file, DRM_IOCTL_RADEON_STIPPLE, (unsigned long)request);
 154 }
 155
 156 typedef struct drm_radeon_tex_image32 {
 157         unsigned int x, y;      /* Blit coordinates */
 158         unsigned int width, height;
 159         u32 data;
 160 } drm_radeon_tex_image32_t;
 161
 162 typedef struct drm_radeon_texture32 {
 163         unsigned int offset;
 164         int pitch;
 165         int format;
 166         int width;              /* Texture image coordinates */
 167         int height;
 168         u32 image;
 169 } drm_radeon_texture32_t;
 170
 171 static int compat_radeon_cp_texture(struct file *file, unsigned int cmd,
 172                                     unsigned long arg)
 173 {
 174         drm_radeon_texture32_t req32;
 175         drm_radeon_texture_t __user *request;
 176         drm_radeon_tex_image32_t img32;
 177         drm_radeon_tex_image_t __user *image;
 178
 179         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 180                 return -EFAULT;
 181         if (req32.image == 0)
 182                 return -EINVAL;
 183         if (copy_from_user(&img32, (void __user *)(unsigned long)req32.image,
 184                            sizeof(img32)))
 185                 return -EFAULT;
 186
 187         request = compat_alloc_user_space(sizeof(*request) + sizeof(*image));
 188         if (!access_ok(VERIFY_WRITE, request,
 189                        sizeof(*request) + sizeof(*image)))
 190                 return -EFAULT;
 191         image = (drm_radeon_tex_image_t __user *) (request + 1);
 192
 193         if (__put_user(req32.offset, &request->offset)
 194             || __put_user(req32.pitch, &request->pitch)
 195             || __put_user(req32.format, &request->format)
 196             || __put_user(req32.width, &request->width)
 197             || __put_user(req32.height, &request->height)
 198             || __put_user(image, &request->image)
 199             || __put_user(img32.x, &image->x)
 200             || __put_user(img32.y, &image->y)
 201             || __put_user(img32.width, &image->width)
 202             || __put_user(img32.height, &image->height)
 203             || __put_user((const void __user *)(unsigned long)img32.data,
 204                           &image->data))
 205                 return -EFAULT;
 206
 207         return drm_ioctl(file, DRM_IOCTL_RADEON_TEXTURE, (unsigned long)request);
 208 }
 209
 210 typedef struct drm_radeon_vertex2_32 {
 211         int idx;                /* Index of vertex buffer */
 212         int discard;            /* Client finished with buffer? */
 213         int nr_states;
 214         u32 state;
 215         int nr_prims;
 216         u32 prim;
 217 } drm_radeon_vertex2_32_t;
 218
 219 static int compat_radeon_cp_vertex2(struct file *file, unsigned int cmd,
 220                                     unsigned long arg)
 221 {
 222         drm_radeon_vertex2_32_t req32;
 223         drm_radeon_vertex2_t __user *request;
 224
 225         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 226                 return -EFAULT;
 227
 228         request = compat_alloc_user_space(sizeof(*request));
 229         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 230             || __put_user(req32.idx, &request->idx)
 231             || __put_user(req32.discard, &request->discard)
 232             || __put_user(req32.nr_states, &request->nr_states)
 233             || __put_user((void __user *)(unsigned long)req32.state,
 234                           &request->state)
 235             || __put_user(req32.nr_prims, &request->nr_prims)
 236             || __put_user((void __user *)(unsigned long)req32.prim,
 237                           &request->prim))
 238                 return -EFAULT;
 239
 240         return drm_ioctl(file, DRM_IOCTL_RADEON_VERTEX2, (unsigned long)request);
 241 }
 242
 243 typedef struct drm_radeon_cmd_buffer32 {
 244         int bufsz;
 245         u32 buf;
 246         int nbox;
 247         u32 boxes;
 248 } drm_radeon_cmd_buffer32_t;
 249
 250 static int compat_radeon_cp_cmdbuf(struct file *file, unsigned int cmd,
 251                                    unsigned long arg)
 252 {
 253         drm_radeon_cmd_buffer32_t req32;
 254         drm_radeon_cmd_buffer_t __user *request;
 255
 256         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 257                 return -EFAULT;
 258
 259         request = compat_alloc_user_space(sizeof(*request));
 260         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 261             || __put_user(req32.bufsz, &request->bufsz)
 262             || __put_user((void __user *)(unsigned long)req32.buf,
 263                           &request->buf)
 264             || __put_user(req32.nbox, &request->nbox)
 265             || __put_user((void __user *)(unsigned long)req32.boxes,
 266                           &request->boxes))
 267                 return -EFAULT;
 268
 269         return drm_ioctl(file, DRM_IOCTL_RADEON_CMDBUF, (unsigned long)request);
 270 }
 271
 272 typedef struct drm_radeon_getparam32 {
 273         int param;
 274         u32 value;
 275 } drm_radeon_getparam32_t;
 276
 277 static int compat_radeon_cp_getparam(struct file *file, unsigned int cmd,
 278                                      unsigned long arg)
 279 {
 280         drm_radeon_getparam32_t req32;
 281         drm_radeon_getparam_t __user *request;
 282
 283         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 284                 return -EFAULT;
 285
 286         request = compat_alloc_user_space(sizeof(*request));
 287         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 288             || __put_user(req32.param, &request->param)
 289             || __put_user((void __user *)(unsigned long)req32.value,
 290                           &request->value))
 291                 return -EFAULT;
 292
 293         return drm_ioctl(file, DRM_IOCTL_RADEON_GETPARAM, (unsigned long)request);
 294 }
 295
 296 typedef struct drm_radeon_mem_alloc32 {
 297         int region;
 298         int alignment;
 299         int size;
 300         u32 region_offset;      /* offset from start of fb or GART */
 301 } drm_radeon_mem_alloc32_t;
 302
 303 static int compat_radeon_mem_alloc(struct file *file, unsigned int cmd,
 304                                    unsigned long arg)
 305 {
 306         drm_radeon_mem_alloc32_t req32;
 307         drm_radeon_mem_alloc_t __user *request;
 308
 309         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 310                 return -EFAULT;
 311
 312         request = compat_alloc_user_space(sizeof(*request));
 313         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 314             || __put_user(req32.region, &request->region)
 315             || __put_user(req32.alignment, &request->alignment)
 316             || __put_user(req32.size, &request->size)
 317             || __put_user((int __user *)(unsigned long)req32.region_offset,
 318                           &request->region_offset))
 319                 return -EFAULT;
 320
 321         return drm_ioctl(file, DRM_IOCTL_RADEON_ALLOC, (unsigned long)request);
 322 }
 323
 324 typedef struct drm_radeon_irq_emit32 {
 325         u32 irq_seq;
 326 } drm_radeon_irq_emit32_t;
 327
 328 static int compat_radeon_irq_emit(struct file *file, unsigned int cmd,
 329                                   unsigned long arg)
 330 {
 331         drm_radeon_irq_emit32_t req32;
 332         drm_radeon_irq_emit_t __user *request;
 333
 334         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
 335                 return -EFAULT;
 336
 337         request = compat_alloc_user_space(sizeof(*request));
 338         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 339             || __put_user((int __user *)(unsigned long)req32.irq_seq,
 340                           &request->irq_seq))
 341                 return -EFAULT;
 342
 343         return drm_ioctl(file, DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request);
 344 }
 345
 346 /* The two 64-bit arches where alignof(u64)==4 in 32-bit code */
 347 #if defined (CONFIG_X86_64) || defined(CONFIG_IA64)
 348 typedef struct drm_radeon_setparam32 {
 349         int param;
 350         u64 value;
 351 } __attribute__((packed)) drm_radeon_setparam32_t;
 352
 353 static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
 354                                      unsigned long arg)
 355 {
 356         drm_radeon_setparam32_t req32;
 357         drm_radeon_setparam_t __user *request;
 358
 359         if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
 360                 return -EFAULT;
 361
 362         request = compat_alloc_user_space(sizeof(*request));
 363         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 364             || __put_user(req32.param, &request->param)
 365             || __put_user((void __user *)(unsigned long)req32.value,
 366                           &request->value))
 367                 return -EFAULT;
 368
 369         return drm_ioctl(file, DRM_IOCTL_RADEON_SETPARAM, (unsigned long) request);
 370 }
 371 #else
 372 #define compat_radeon_cp_setparam NULL
 373 #endif /* X86_64 || IA64 */
 374
 375 static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
 376         [DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
 377         [DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
 378         [DRM_RADEON_STIPPLE] = compat_radeon_cp_stipple,
 379         [DRM_RADEON_TEXTURE] = compat_radeon_cp_texture,
 380         [DRM_RADEON_VERTEX2] = compat_radeon_cp_vertex2,
 381         [DRM_RADEON_CMDBUF] = compat_radeon_cp_cmdbuf,
 382         [DRM_RADEON_GETPARAM] = compat_radeon_cp_getparam,
 383         [DRM_RADEON_SETPARAM] = compat_radeon_cp_setparam,
 384         [DRM_RADEON_ALLOC] = compat_radeon_mem_alloc,
 385         [DRM_RADEON_IRQ_EMIT] = compat_radeon_irq_emit,
 386 };
 387
 388 /**
 389  * Called whenever a 32-bit process running under a 64-bit kernel
 390  * performs an ioctl on /dev/dri/card<n>.
 391  *
 392  * \param filp file pointer.
 393  * \param cmd command.
 394  * \param arg user argument.
 395  * \return zero on success or negative number on failure.
 396  */
 397 long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 398 {
 399         unsigned int nr = DRM_IOCTL_NR(cmd);
 400         drm_ioctl_compat_t *fn = NULL;
 401         int ret;
 402
 403         if (nr < DRM_COMMAND_BASE)
 404                 return drm_compat_ioctl(filp, cmd, arg);
 405
 406         if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(radeon_compat_ioctls))
 407                 fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
 408
 409         if (fn != NULL)
 410                 ret = (*fn) (filp, cmd, arg);
 411         else
 412                 ret = drm_ioctl(filp, cmd, arg);
 413
 414         return ret;
 415 }
 416
 417 long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 418 {
 419         unsigned int nr = DRM_IOCTL_NR(cmd);
 420         int ret;
 421
 422         if (nr < DRM_COMMAND_BASE)
 423                 return drm_compat_ioctl(filp, cmd, arg);
 424
 425         ret = drm_ioctl(filp, cmd, arg);
 426
 427         return ret;
 428 }