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30#include <linux/compat.h>
31#include <linux/ratelimit.h>
32#include <linux/export.h>
33
34#include <drm/drm_agpsupport.h>
35#include <drm/drm_file.h>
36#include <drm/drm_print.h>
37
38#include "drm_crtc_internal.h"
39#include "drm_internal.h"
40#include "drm_legacy.h"
41
42#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
43#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
44#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
45#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
46#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
47
48#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
49#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
50#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
51#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
52#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
53#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
54#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
55
56#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
57
58#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
59#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
60
61#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
62#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
63
64#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
65#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
66#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
67#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
68#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
69#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
70
71#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
72#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
73
74#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
75
76#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
77
78#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
79
80typedef struct drm_version_32 {
81 int version_major;
82 int version_minor;
83 int version_patchlevel;
84 u32 name_len;
85 u32 name;
86 u32 date_len;
87 u32 date;
88 u32 desc_len;
89 u32 desc;
90} drm_version32_t;
91
92static int compat_drm_version(struct file *file, unsigned int cmd,
93 unsigned long arg)
94{
95 drm_version32_t v32;
96 struct drm_version v;
97 int err;
98
99 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
100 return -EFAULT;
101
102 v = (struct drm_version) {
103 .name_len = v32.name_len,
104 .name = compat_ptr(v32.name),
105 .date_len = v32.date_len,
106 .date = compat_ptr(v32.date),
107 .desc_len = v32.desc_len,
108 .desc = compat_ptr(v32.desc),
109 };
110 err = drm_ioctl_kernel(file, drm_version, &v,
111 DRM_RENDER_ALLOW);
112 if (err)
113 return err;
114
115 v32.version_major = v.version_major;
116 v32.version_minor = v.version_minor;
117 v32.version_patchlevel = v.version_patchlevel;
118 v32.name_len = v.name_len;
119 v32.date_len = v.date_len;
120 v32.desc_len = v.desc_len;
121 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
122 return -EFAULT;
123 return 0;
124}
125
126typedef struct drm_unique32 {
127 u32 unique_len;
128 u32 unique;
129} drm_unique32_t;
130
131static int compat_drm_getunique(struct file *file, unsigned int cmd,
132 unsigned long arg)
133{
134 drm_unique32_t uq32;
135 struct drm_unique uq;
136 int err;
137
138 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
139 return -EFAULT;
140 uq = (struct drm_unique){
141 .unique_len = uq32.unique_len,
142 .unique = compat_ptr(uq32.unique),
143 };
144
145 err = drm_ioctl_kernel(file, drm_getunique, &uq, 0);
146 if (err)
147 return err;
148
149 uq32.unique_len = uq.unique_len;
150 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
151 return -EFAULT;
152 return 0;
153}
154
155static int compat_drm_setunique(struct file *file, unsigned int cmd,
156 unsigned long arg)
157{
158
159 return -EINVAL;
160}
161
162#if IS_ENABLED(CONFIG_DRM_LEGACY)
163typedef struct drm_map32 {
164 u32 offset;
165 u32 size;
166 enum drm_map_type type;
167 enum drm_map_flags flags;
168 u32 handle;
169 int mtrr;
170} drm_map32_t;
171
172static int compat_drm_getmap(struct file *file, unsigned int cmd,
173 unsigned long arg)
174{
175 drm_map32_t __user *argp = (void __user *)arg;
176 drm_map32_t m32;
177 struct drm_map map;
178 int err;
179
180 if (copy_from_user(&m32, argp, sizeof(m32)))
181 return -EFAULT;
182
183 map.offset = m32.offset;
184 err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0);
185 if (err)
186 return err;
187
188 m32.offset = map.offset;
189 m32.size = map.size;
190 m32.type = map.type;
191 m32.flags = map.flags;
192 m32.handle = ptr_to_compat((void __user *)map.handle);
193 m32.mtrr = map.mtrr;
194 if (copy_to_user(argp, &m32, sizeof(m32)))
195 return -EFAULT;
196 return 0;
197
198}
199
200static int compat_drm_addmap(struct file *file, unsigned int cmd,
201 unsigned long arg)
202{
203 drm_map32_t __user *argp = (void __user *)arg;
204 drm_map32_t m32;
205 struct drm_map map;
206 int err;
207
208 if (copy_from_user(&m32, argp, sizeof(m32)))
209 return -EFAULT;
210
211 map.offset = m32.offset;
212 map.size = m32.size;
213 map.type = m32.type;
214 map.flags = m32.flags;
215
216 err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
217 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
218 if (err)
219 return err;
220
221 m32.offset = map.offset;
222 m32.mtrr = map.mtrr;
223 m32.handle = ptr_to_compat((void __user *)map.handle);
224 if (map.handle != compat_ptr(m32.handle))
225 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
226 map.handle, m32.type, m32.offset);
227
228 if (copy_to_user(argp, &m32, sizeof(m32)))
229 return -EFAULT;
230
231 return 0;
232}
233
234static int compat_drm_rmmap(struct file *file, unsigned int cmd,
235 unsigned long arg)
236{
237 drm_map32_t __user *argp = (void __user *)arg;
238 struct drm_map map;
239 u32 handle;
240
241 if (get_user(handle, &argp->handle))
242 return -EFAULT;
243 map.handle = compat_ptr(handle);
244 return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
245}
246#endif
247
248typedef struct drm_client32 {
249 int idx;
250 int auth;
251 u32 pid;
252 u32 uid;
253 u32 magic;
254 u32 iocs;
255} drm_client32_t;
256
257static int compat_drm_getclient(struct file *file, unsigned int cmd,
258 unsigned long arg)
259{
260 drm_client32_t c32;
261 drm_client32_t __user *argp = (void __user *)arg;
262 struct drm_client client;
263 int err;
264
265 if (copy_from_user(&c32, argp, sizeof(c32)))
266 return -EFAULT;
267
268 client.idx = c32.idx;
269
270 err = drm_ioctl_kernel(file, drm_getclient, &client, 0);
271 if (err)
272 return err;
273
274 c32.idx = client.idx;
275 c32.auth = client.auth;
276 c32.pid = client.pid;
277 c32.uid = client.uid;
278 c32.magic = client.magic;
279 c32.iocs = client.iocs;
280
281 if (copy_to_user(argp, &c32, sizeof(c32)))
282 return -EFAULT;
283 return 0;
284}
285
286typedef struct drm_stats32 {
287 u32 count;
288 struct {
289 u32 value;
290 enum drm_stat_type type;
291 } data[15];
292} drm_stats32_t;
293
294static int compat_drm_getstats(struct file *file, unsigned int cmd,
295 unsigned long arg)
296{
297 drm_stats32_t __user *argp = (void __user *)arg;
298 int err;
299
300 err = drm_ioctl_kernel(file, drm_noop, NULL, 0);
301 if (err)
302 return err;
303
304 if (clear_user(argp, sizeof(drm_stats32_t)))
305 return -EFAULT;
306 return 0;
307}
308
309#if IS_ENABLED(CONFIG_DRM_LEGACY)
310typedef struct drm_buf_desc32 {
311 int count;
312 int size;
313 int low_mark;
314 int high_mark;
315 int flags;
316 u32 agp_start;
317} drm_buf_desc32_t;
318
319static int compat_drm_addbufs(struct file *file, unsigned int cmd,
320 unsigned long arg)
321{
322 drm_buf_desc32_t __user *argp = (void __user *)arg;
323 drm_buf_desc32_t desc32;
324 struct drm_buf_desc desc;
325 int err;
326
327 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
328 return -EFAULT;
329
330 desc = (struct drm_buf_desc){
331 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
332 desc32.flags, desc32.agp_start
333 };
334
335 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
336 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
337 if (err)
338 return err;
339
340 desc32 = (drm_buf_desc32_t){
341 desc.count, desc.size, desc.low_mark, desc.high_mark,
342 desc.flags, desc.agp_start
343 };
344 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
345 return -EFAULT;
346
347 return 0;
348}
349
350static int compat_drm_markbufs(struct file *file, unsigned int cmd,
351 unsigned long arg)
352{
353 drm_buf_desc32_t b32;
354 drm_buf_desc32_t __user *argp = (void __user *)arg;
355 struct drm_buf_desc buf;
356
357 if (copy_from_user(&b32, argp, sizeof(b32)))
358 return -EFAULT;
359
360 buf.size = b32.size;
361 buf.low_mark = b32.low_mark;
362 buf.high_mark = b32.high_mark;
363
364 return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
365 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
366}
367
368typedef struct drm_buf_info32 {
369 int count;
370 u32 list;
371} drm_buf_info32_t;
372
373static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
374{
375 drm_buf_info32_t *request = data;
376 drm_buf_desc32_t __user *to = compat_ptr(request->list);
377 drm_buf_desc32_t v = {.count = from->buf_count,
378 .size = from->buf_size,
379 .low_mark = from->low_mark,
380 .high_mark = from->high_mark};
381
382 if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
383 return -EFAULT;
384 return 0;
385}
386
387static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
388 struct drm_file *file_priv)
389{
390 drm_buf_info32_t *request = data;
391
392 return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
393}
394
395static int compat_drm_infobufs(struct file *file, unsigned int cmd,
396 unsigned long arg)
397{
398 drm_buf_info32_t req32;
399 drm_buf_info32_t __user *argp = (void __user *)arg;
400 int err;
401
402 if (copy_from_user(&req32, argp, sizeof(req32)))
403 return -EFAULT;
404
405 if (req32.count < 0)
406 req32.count = 0;
407
408 err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
409 if (err)
410 return err;
411
412 if (put_user(req32.count, &argp->count))
413 return -EFAULT;
414
415 return 0;
416}
417
418typedef struct drm_buf_pub32 {
419 int idx;
420 int total;
421 int used;
422 u32 address;
423} drm_buf_pub32_t;
424
425typedef struct drm_buf_map32 {
426 int count;
427 u32 virtual;
428 u32 list;
429} drm_buf_map32_t;
430
431static int map_one_buf32(void *data, int idx, unsigned long virtual,
432 struct drm_buf *buf)
433{
434 drm_buf_map32_t *request = data;
435 drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
436 drm_buf_pub32_t v;
437
438 v.idx = buf->idx;
439 v.total = buf->total;
440 v.used = 0;
441 v.address = virtual + buf->offset;
442 if (copy_to_user(to, &v, sizeof(v)))
443 return -EFAULT;
444 return 0;
445}
446
447static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
448 struct drm_file *file_priv)
449{
450 drm_buf_map32_t *request = data;
451 void __user *v;
452 int err = __drm_legacy_mapbufs(dev, data, &request->count,
453 &v, map_one_buf32,
454 file_priv);
455 request->virtual = ptr_to_compat(v);
456 return err;
457}
458
459static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
460 unsigned long arg)
461{
462 drm_buf_map32_t __user *argp = (void __user *)arg;
463 drm_buf_map32_t req32;
464 int err;
465
466 if (copy_from_user(&req32, argp, sizeof(req32)))
467 return -EFAULT;
468 if (req32.count < 0)
469 return -EINVAL;
470
471 err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
472 if (err)
473 return err;
474
475 if (put_user(req32.count, &argp->count)
476 || put_user(req32.virtual, &argp->virtual))
477 return -EFAULT;
478
479 return 0;
480}
481
482typedef struct drm_buf_free32 {
483 int count;
484 u32 list;
485} drm_buf_free32_t;
486
487static int compat_drm_freebufs(struct file *file, unsigned int cmd,
488 unsigned long arg)
489{
490 drm_buf_free32_t req32;
491 struct drm_buf_free request;
492 drm_buf_free32_t __user *argp = (void __user *)arg;
493
494 if (copy_from_user(&req32, argp, sizeof(req32)))
495 return -EFAULT;
496
497 request.count = req32.count;
498 request.list = compat_ptr(req32.list);
499 return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
500}
501
502typedef struct drm_ctx_priv_map32 {
503 unsigned int ctx_id;
504 u32 handle;
505} drm_ctx_priv_map32_t;
506
507static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
508 unsigned long arg)
509{
510 drm_ctx_priv_map32_t req32;
511 struct drm_ctx_priv_map request;
512 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
513
514 if (copy_from_user(&req32, argp, sizeof(req32)))
515 return -EFAULT;
516
517 request.ctx_id = req32.ctx_id;
518 request.handle = compat_ptr(req32.handle);
519 return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
520 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
521}
522
523static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
524 unsigned long arg)
525{
526 struct drm_ctx_priv_map req;
527 drm_ctx_priv_map32_t req32;
528 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
529 int err;
530
531 if (copy_from_user(&req32, argp, sizeof(req32)))
532 return -EFAULT;
533
534 req.ctx_id = req32.ctx_id;
535 err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
536 if (err)
537 return err;
538
539 req32.handle = ptr_to_compat((void __user *)req.handle);
540 if (copy_to_user(argp, &req32, sizeof(req32)))
541 return -EFAULT;
542
543 return 0;
544}
545
546typedef struct drm_ctx_res32 {
547 int count;
548 u32 contexts;
549} drm_ctx_res32_t;
550
551static int compat_drm_resctx(struct file *file, unsigned int cmd,
552 unsigned long arg)
553{
554 drm_ctx_res32_t __user *argp = (void __user *)arg;
555 drm_ctx_res32_t res32;
556 struct drm_ctx_res res;
557 int err;
558
559 if (copy_from_user(&res32, argp, sizeof(res32)))
560 return -EFAULT;
561
562 res.count = res32.count;
563 res.contexts = compat_ptr(res32.contexts);
564 err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
565 if (err)
566 return err;
567
568 res32.count = res.count;
569 if (copy_to_user(argp, &res32, sizeof(res32)))
570 return -EFAULT;
571
572 return 0;
573}
574
575typedef struct drm_dma32 {
576 int context;
577 int send_count;
578 u32 send_indices;
579 u32 send_sizes;
580 enum drm_dma_flags flags;
581 int request_count;
582 int request_size;
583 u32 request_indices;
584 u32 request_sizes;
585 int granted_count;
586} drm_dma32_t;
587
588static int compat_drm_dma(struct file *file, unsigned int cmd,
589 unsigned long arg)
590{
591 drm_dma32_t d32;
592 drm_dma32_t __user *argp = (void __user *)arg;
593 struct drm_dma d;
594 int err;
595
596 if (copy_from_user(&d32, argp, sizeof(d32)))
597 return -EFAULT;
598
599 d.context = d32.context;
600 d.send_count = d32.send_count;
601 d.send_indices = compat_ptr(d32.send_indices);
602 d.send_sizes = compat_ptr(d32.send_sizes);
603 d.flags = d32.flags;
604 d.request_count = d32.request_count;
605 d.request_indices = compat_ptr(d32.request_indices);
606 d.request_sizes = compat_ptr(d32.request_sizes);
607 err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
608 if (err)
609 return err;
610
611 if (put_user(d.request_size, &argp->request_size)
612 || put_user(d.granted_count, &argp->granted_count))
613 return -EFAULT;
614
615 return 0;
616}
617#endif
618
619#if IS_ENABLED(CONFIG_AGP)
620typedef struct drm_agp_mode32 {
621 u32 mode;
622} drm_agp_mode32_t;
623
624static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
625 unsigned long arg)
626{
627 drm_agp_mode32_t __user *argp = (void __user *)arg;
628 struct drm_agp_mode mode;
629
630 if (get_user(mode.mode, &argp->mode))
631 return -EFAULT;
632
633 return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode,
634 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
635}
636
637typedef struct drm_agp_info32 {
638 int agp_version_major;
639 int agp_version_minor;
640 u32 mode;
641 u32 aperture_base;
642 u32 aperture_size;
643 u32 memory_allowed;
644 u32 memory_used;
645
646
647 unsigned short id_vendor;
648 unsigned short id_device;
649} drm_agp_info32_t;
650
651static int compat_drm_agp_info(struct file *file, unsigned int cmd,
652 unsigned long arg)
653{
654 drm_agp_info32_t __user *argp = (void __user *)arg;
655 drm_agp_info32_t i32;
656 struct drm_agp_info info;
657 int err;
658
659 err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH);
660 if (err)
661 return err;
662
663 i32.agp_version_major = info.agp_version_major;
664 i32.agp_version_minor = info.agp_version_minor;
665 i32.mode = info.mode;
666 i32.aperture_base = info.aperture_base;
667 i32.aperture_size = info.aperture_size;
668 i32.memory_allowed = info.memory_allowed;
669 i32.memory_used = info.memory_used;
670 i32.id_vendor = info.id_vendor;
671 i32.id_device = info.id_device;
672 if (copy_to_user(argp, &i32, sizeof(i32)))
673 return -EFAULT;
674
675 return 0;
676}
677
678typedef struct drm_agp_buffer32 {
679 u32 size;
680 u32 handle;
681 u32 type;
682 u32 physical;
683} drm_agp_buffer32_t;
684
685static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
686 unsigned long arg)
687{
688 drm_agp_buffer32_t __user *argp = (void __user *)arg;
689 drm_agp_buffer32_t req32;
690 struct drm_agp_buffer request;
691 int err;
692
693 if (copy_from_user(&req32, argp, sizeof(req32)))
694 return -EFAULT;
695
696 request.size = req32.size;
697 request.type = req32.type;
698 err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request,
699 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
700 if (err)
701 return err;
702
703 req32.handle = request.handle;
704 req32.physical = request.physical;
705 if (copy_to_user(argp, &req32, sizeof(req32))) {
706 drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
707 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
708 return -EFAULT;
709 }
710
711 return 0;
712}
713
714static int compat_drm_agp_free(struct file *file, unsigned int cmd,
715 unsigned long arg)
716{
717 drm_agp_buffer32_t __user *argp = (void __user *)arg;
718 struct drm_agp_buffer request;
719
720 if (get_user(request.handle, &argp->handle))
721 return -EFAULT;
722
723 return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
724 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
725}
726
727typedef struct drm_agp_binding32 {
728 u32 handle;
729 u32 offset;
730} drm_agp_binding32_t;
731
732static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
733 unsigned long arg)
734{
735 drm_agp_binding32_t __user *argp = (void __user *)arg;
736 drm_agp_binding32_t req32;
737 struct drm_agp_binding request;
738
739 if (copy_from_user(&req32, argp, sizeof(req32)))
740 return -EFAULT;
741
742 request.handle = req32.handle;
743 request.offset = req32.offset;
744 return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request,
745 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
746}
747
748static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
749 unsigned long arg)
750{
751 drm_agp_binding32_t __user *argp = (void __user *)arg;
752 struct drm_agp_binding request;
753
754 if (get_user(request.handle, &argp->handle))
755 return -EFAULT;
756
757 return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request,
758 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
759}
760#endif
761
762#if IS_ENABLED(CONFIG_DRM_LEGACY)
763typedef struct drm_scatter_gather32 {
764 u32 size;
765 u32 handle;
766} drm_scatter_gather32_t;
767
768static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
769 unsigned long arg)
770{
771 drm_scatter_gather32_t __user *argp = (void __user *)arg;
772 struct drm_scatter_gather request;
773 int err;
774
775 if (get_user(request.size, &argp->size))
776 return -EFAULT;
777
778 err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
779 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
780 if (err)
781 return err;
782
783
784 if (put_user(request.handle >> PAGE_SHIFT, &argp->handle))
785 return -EFAULT;
786
787 return 0;
788}
789
790static int compat_drm_sg_free(struct file *file, unsigned int cmd,
791 unsigned long arg)
792{
793 drm_scatter_gather32_t __user *argp = (void __user *)arg;
794 struct drm_scatter_gather request;
795 unsigned long x;
796
797 if (get_user(x, &argp->handle))
798 return -EFAULT;
799 request.handle = x << PAGE_SHIFT;
800 return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
801 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
802}
803#endif
804#if defined(CONFIG_X86)
805typedef struct drm_update_draw32 {
806 drm_drawable_t handle;
807 unsigned int type;
808 unsigned int num;
809
810 u64 data;
811} __attribute__((packed)) drm_update_draw32_t;
812
813static int compat_drm_update_draw(struct file *file, unsigned int cmd,
814 unsigned long arg)
815{
816 drm_update_draw32_t update32;
817
818 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
819 return -EFAULT;
820
821 return drm_ioctl_kernel(file, drm_noop, NULL,
822 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
823}
824#endif
825
826struct drm_wait_vblank_request32 {
827 enum drm_vblank_seq_type type;
828 unsigned int sequence;
829 u32 signal;
830};
831
832struct drm_wait_vblank_reply32 {
833 enum drm_vblank_seq_type type;
834 unsigned int sequence;
835 s32 tval_sec;
836 s32 tval_usec;
837};
838
839typedef union drm_wait_vblank32 {
840 struct drm_wait_vblank_request32 request;
841 struct drm_wait_vblank_reply32 reply;
842} drm_wait_vblank32_t;
843
844static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
845 unsigned long arg)
846{
847 drm_wait_vblank32_t __user *argp = (void __user *)arg;
848 drm_wait_vblank32_t req32;
849 union drm_wait_vblank req;
850 int err;
851
852 if (copy_from_user(&req32, argp, sizeof(req32)))
853 return -EFAULT;
854
855 req.request.type = req32.request.type;
856 req.request.sequence = req32.request.sequence;
857 req.request.signal = req32.request.signal;
858 err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
859 if (err)
860 return err;
861
862 req32.reply.type = req.reply.type;
863 req32.reply.sequence = req.reply.sequence;
864 req32.reply.tval_sec = req.reply.tval_sec;
865 req32.reply.tval_usec = req.reply.tval_usec;
866 if (copy_to_user(argp, &req32, sizeof(req32)))
867 return -EFAULT;
868
869 return 0;
870}
871
872#if defined(CONFIG_X86)
873typedef struct drm_mode_fb_cmd232 {
874 u32 fb_id;
875 u32 width;
876 u32 height;
877 u32 pixel_format;
878 u32 flags;
879 u32 handles[4];
880 u32 pitches[4];
881 u32 offsets[4];
882 u64 modifier[4];
883} __attribute__((packed)) drm_mode_fb_cmd232_t;
884
885static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
886 unsigned long arg)
887{
888 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
889 struct drm_mode_fb_cmd2 req64;
890 int err;
891
892 if (copy_from_user(&req64, argp,
893 offsetof(drm_mode_fb_cmd232_t, modifier)))
894 return -EFAULT;
895
896 if (copy_from_user(&req64.modifier, &argp->modifier,
897 sizeof(req64.modifier)))
898 return -EFAULT;
899
900 err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0);
901 if (err)
902 return err;
903
904 if (put_user(req64.fb_id, &argp->fb_id))
905 return -EFAULT;
906
907 return 0;
908}
909#endif
910
911static struct {
912 drm_ioctl_compat_t *fn;
913 char *name;
914} drm_compat_ioctls[] = {
915#define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
916 DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
917 DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
918#if IS_ENABLED(CONFIG_DRM_LEGACY)
919 DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
920#endif
921 DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
922 DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
923 DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
924#if IS_ENABLED(CONFIG_DRM_LEGACY)
925 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
926 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
927 DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
928 DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
929 DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
930 DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
931 DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
932 DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
933 DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
934 DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
935 DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
936#endif
937#if IS_ENABLED(CONFIG_AGP)
938 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
939 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
940 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
941 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
942 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
943 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
944#endif
945#if IS_ENABLED(CONFIG_DRM_LEGACY)
946 DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
947 DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
948#endif
949#if defined(CONFIG_X86) || defined(CONFIG_IA64)
950 DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
951#endif
952 DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
953#if defined(CONFIG_X86) || defined(CONFIG_IA64)
954 DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
955#endif
956};
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
973{
974 unsigned int nr = DRM_IOCTL_NR(cmd);
975 struct drm_file *file_priv = filp->private_data;
976 drm_ioctl_compat_t *fn;
977 int ret;
978
979
980
981
982
983 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
984 return drm_ioctl(filp, cmd, arg);
985
986 fn = drm_compat_ioctls[nr].fn;
987 if (!fn)
988 return drm_ioctl(filp, cmd, arg);
989
990 DRM_DEBUG("comm=\"%s\", pid=%d, dev=0x%lx, auth=%d, %s\n",
991 current->comm, task_pid_nr(current),
992 (long)old_encode_dev(file_priv->minor->kdev->devt),
993 file_priv->authenticated,
994 drm_compat_ioctls[nr].name);
995 ret = (*fn)(filp, cmd, arg);
996 if (ret)
997 DRM_DEBUG("ret = %d\n", ret);
998 return ret;
999}
1000EXPORT_SYMBOL(drm_compat_ioctl);
1001
