4 * 32-bit ioctl compatibility routines for the DRM.
6 * \author Paul Mackerras <paulus@samba.org>
8 * Copyright (C) Paul Mackerras 2005.
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:
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
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
30 #include <linux/compat.h>
31 #include <linux/ratelimit.h>
32 #include <linux/export.h>
35 #include "drm_legacy.h"
36 #include "drm_internal.h"
37 #include "drm_crtc_internal.h"
39 #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
40 #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
41 #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
42 #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
43 #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
45 #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
46 #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
47 #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
48 #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
49 #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
50 #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
51 #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
53 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
55 #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
56 #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
58 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
59 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
61 #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
62 #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
63 #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
64 #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
65 #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
66 #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
68 #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
69 #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
71 #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
73 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
75 #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
77 typedef struct drm_version_32 {
78 int version_major; /* Major version */
79 int version_minor; /* Minor version */
80 int version_patchlevel; /* Patch level */
81 u32 name_len; /* Length of name buffer */
82 u32 name; /* Name of driver */
83 u32 date_len; /* Length of date buffer */
84 u32 date; /* User-space buffer to hold date */
85 u32 desc_len; /* Length of desc buffer */
86 u32 desc; /* User-space buffer to hold desc */
89 static int compat_drm_version(struct file *file, unsigned int cmd,
96 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
99 v = (struct drm_version) {
100 .name_len = v32.name_len,
101 .name = compat_ptr(v32.name),
102 .date_len = v32.date_len,
103 .date = compat_ptr(v32.date),
104 .desc_len = v32.desc_len,
105 .desc = compat_ptr(v32.desc),
107 err = drm_ioctl_kernel(file, drm_version, &v,
108 DRM_UNLOCKED|DRM_RENDER_ALLOW);
112 v32.version_major = v.version_major;
113 v32.version_minor = v.version_minor;
114 v32.version_patchlevel = v.version_patchlevel;
115 v32.name_len = v.name_len;
116 v32.date_len = v.date_len;
117 v32.desc_len = v.desc_len;
118 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
123 typedef struct drm_unique32 {
124 u32 unique_len; /* Length of unique */
125 u32 unique; /* Unique name for driver instantiation */
128 static int compat_drm_getunique(struct file *file, unsigned int cmd,
132 struct drm_unique uq;
135 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
137 uq = (struct drm_unique){
138 .unique_len = uq32.unique_len,
139 .unique = compat_ptr(uq32.unique),
142 err = drm_ioctl_kernel(file, drm_getunique, &uq, DRM_UNLOCKED);
146 uq32.unique_len = uq.unique_len;
147 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
152 static int compat_drm_setunique(struct file *file, unsigned int cmd,
159 #if IS_ENABLED(CONFIG_DRM_LEGACY)
160 typedef struct drm_map32 {
161 u32 offset; /* Requested physical address (0 for SAREA) */
162 u32 size; /* Requested physical size (bytes) */
163 enum drm_map_type type; /* Type of memory to map */
164 enum drm_map_flags flags; /* Flags */
165 u32 handle; /* User-space: "Handle" to pass to mmap() */
166 int mtrr; /* MTRR slot used */
169 static int compat_drm_getmap(struct file *file, unsigned int cmd,
172 drm_map32_t __user *argp = (void __user *)arg;
177 if (copy_from_user(&m32, argp, sizeof(m32)))
180 map.offset = m32.offset;
181 err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, DRM_UNLOCKED);
185 m32.offset = map.offset;
188 m32.flags = map.flags;
189 m32.handle = ptr_to_compat((void __user *)map.handle);
191 if (copy_to_user(argp, &m32, sizeof(m32)))
197 static int compat_drm_addmap(struct file *file, unsigned int cmd,
200 drm_map32_t __user *argp = (void __user *)arg;
205 if (copy_from_user(&m32, argp, sizeof(m32)))
208 map.offset = m32.offset;
211 map.flags = m32.flags;
213 err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
214 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
218 m32.offset = map.offset;
220 m32.handle = ptr_to_compat((void __user *)map.handle);
221 if (map.handle != compat_ptr(m32.handle))
222 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
223 map.handle, m32.type, m32.offset);
225 if (copy_to_user(argp, &m32, sizeof(m32)))
231 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
234 drm_map32_t __user *argp = (void __user *)arg;
238 if (get_user(handle, &argp->handle))
240 map.handle = compat_ptr(handle);
241 return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
245 typedef struct drm_client32 {
246 int idx; /* Which client desired? */
247 int auth; /* Is client authenticated? */
248 u32 pid; /* Process ID */
249 u32 uid; /* User ID */
250 u32 magic; /* Magic */
251 u32 iocs; /* Ioctl count */
254 static int compat_drm_getclient(struct file *file, unsigned int cmd,
258 drm_client32_t __user *argp = (void __user *)arg;
259 struct drm_client client;
262 if (copy_from_user(&c32, argp, sizeof(c32)))
265 client.idx = c32.idx;
267 err = drm_ioctl_kernel(file, drm_getclient, &client, DRM_UNLOCKED);
271 c32.idx = client.idx;
272 c32.auth = client.auth;
273 c32.pid = client.pid;
274 c32.uid = client.uid;
275 c32.magic = client.magic;
276 c32.iocs = client.iocs;
278 if (copy_to_user(argp, &c32, sizeof(c32)))
283 typedef struct drm_stats32 {
287 enum drm_stat_type type;
291 static int compat_drm_getstats(struct file *file, unsigned int cmd,
294 drm_stats32_t __user *argp = (void __user *)arg;
297 err = drm_ioctl_kernel(file, drm_noop, NULL, DRM_UNLOCKED);
301 if (clear_user(argp, sizeof(drm_stats32_t)))
306 #if IS_ENABLED(CONFIG_DRM_LEGACY)
307 typedef struct drm_buf_desc32 {
308 int count; /* Number of buffers of this size */
309 int size; /* Size in bytes */
310 int low_mark; /* Low water mark */
311 int high_mark; /* High water mark */
313 u32 agp_start; /* Start address in the AGP aperture */
316 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
319 drm_buf_desc32_t __user *argp = (void __user *)arg;
320 drm_buf_desc32_t desc32;
321 struct drm_buf_desc desc;
324 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
327 desc = (struct drm_buf_desc){
328 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
329 desc32.flags, desc32.agp_start
332 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
333 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
337 desc32 = (drm_buf_desc32_t){
338 desc.count, desc.size, desc.low_mark, desc.high_mark,
339 desc.flags, desc.agp_start
341 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
347 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
350 drm_buf_desc32_t b32;
351 drm_buf_desc32_t __user *argp = (void __user *)arg;
352 struct drm_buf_desc buf;
354 if (copy_from_user(&b32, argp, sizeof(b32)))
358 buf.low_mark = b32.low_mark;
359 buf.high_mark = b32.high_mark;
361 return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
362 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
365 typedef struct drm_buf_info32 {
366 int count; /**< Entries in list */
370 static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
372 drm_buf_info32_t *request = data;
373 drm_buf_desc32_t __user *to = compat_ptr(request->list);
374 drm_buf_desc32_t v = {.count = from->buf_count,
375 .size = from->buf_size,
376 .low_mark = from->low_mark,
377 .high_mark = from->high_mark};
379 if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
384 static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
385 struct drm_file *file_priv)
387 drm_buf_info32_t *request = data;
388 return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
391 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
394 drm_buf_info32_t req32;
395 drm_buf_info32_t __user *argp = (void __user *)arg;
398 if (copy_from_user(&req32, argp, sizeof(req32)))
404 err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
408 if (put_user(req32.count, &argp->count))
414 typedef struct drm_buf_pub32 {
415 int idx; /**< Index into the master buffer list */
416 int total; /**< Buffer size */
417 int used; /**< Amount of buffer in use (for DMA) */
418 u32 address; /**< Address of buffer */
421 typedef struct drm_buf_map32 {
422 int count; /**< Length of the buffer list */
423 u32 virtual; /**< Mmap'd area in user-virtual */
424 u32 list; /**< Buffer information */
427 static int map_one_buf32(void *data, int idx, unsigned long virtual,
430 drm_buf_map32_t *request = data;
431 drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
435 v.total = buf->total;
437 v.address = virtual + buf->offset;
438 if (copy_to_user(to, &v, sizeof(v)))
443 static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
444 struct drm_file *file_priv)
446 drm_buf_map32_t *request = data;
448 int err = __drm_legacy_mapbufs(dev, data, &request->count,
451 request->virtual = ptr_to_compat(v);
455 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
458 drm_buf_map32_t __user *argp = (void __user *)arg;
459 drm_buf_map32_t req32;
462 if (copy_from_user(&req32, argp, sizeof(req32)))
467 err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
471 if (put_user(req32.count, &argp->count)
472 || put_user(req32.virtual, &argp->virtual))
478 typedef struct drm_buf_free32 {
483 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
486 drm_buf_free32_t req32;
487 struct drm_buf_free request;
488 drm_buf_free32_t __user *argp = (void __user *)arg;
490 if (copy_from_user(&req32, argp, sizeof(req32)))
493 request.count = req32.count;
494 request.list = compat_ptr(req32.list);
495 return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
498 typedef struct drm_ctx_priv_map32 {
499 unsigned int ctx_id; /**< Context requesting private mapping */
500 u32 handle; /**< Handle of map */
501 } drm_ctx_priv_map32_t;
503 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
506 drm_ctx_priv_map32_t req32;
507 struct drm_ctx_priv_map request;
508 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
510 if (copy_from_user(&req32, argp, sizeof(req32)))
513 request.ctx_id = req32.ctx_id;
514 request.handle = compat_ptr(req32.handle);
515 return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
516 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
519 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
522 struct drm_ctx_priv_map req;
523 drm_ctx_priv_map32_t req32;
524 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
527 if (copy_from_user(&req32, argp, sizeof(req32)))
530 req.ctx_id = req32.ctx_id;
531 err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
535 req32.handle = ptr_to_compat((void __user *)req.handle);
536 if (copy_to_user(argp, &req32, sizeof(req32)))
542 typedef struct drm_ctx_res32 {
547 static int compat_drm_resctx(struct file *file, unsigned int cmd,
550 drm_ctx_res32_t __user *argp = (void __user *)arg;
551 drm_ctx_res32_t res32;
552 struct drm_ctx_res res;
555 if (copy_from_user(&res32, argp, sizeof(res32)))
558 res.count = res32.count;
559 res.contexts = compat_ptr(res32.contexts);
560 err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
564 res32.count = res.count;
565 if (copy_to_user(argp, &res32, sizeof(res32)))
571 typedef struct drm_dma32 {
572 int context; /**< Context handle */
573 int send_count; /**< Number of buffers to send */
574 u32 send_indices; /**< List of handles to buffers */
575 u32 send_sizes; /**< Lengths of data to send */
576 enum drm_dma_flags flags; /**< Flags */
577 int request_count; /**< Number of buffers requested */
578 int request_size; /**< Desired size for buffers */
579 u32 request_indices; /**< Buffer information */
581 int granted_count; /**< Number of buffers granted */
584 static int compat_drm_dma(struct file *file, unsigned int cmd,
588 drm_dma32_t __user *argp = (void __user *)arg;
592 if (copy_from_user(&d32, argp, sizeof(d32)))
595 d.context = d32.context;
596 d.send_count = d32.send_count;
597 d.send_indices = compat_ptr(d32.send_indices);
598 d.send_sizes = compat_ptr(d32.send_sizes);
600 d.request_count = d32.request_count;
601 d.request_indices = compat_ptr(d32.request_indices);
602 d.request_sizes = compat_ptr(d32.request_sizes);
603 err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
607 if (put_user(d.request_size, &argp->request_size)
608 || put_user(d.granted_count, &argp->granted_count))
615 #if IS_ENABLED(CONFIG_AGP)
616 typedef struct drm_agp_mode32 {
617 u32 mode; /**< AGP mode */
620 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
623 drm_agp_mode32_t __user *argp = (void __user *)arg;
624 struct drm_agp_mode mode;
626 if (get_user(mode.mode, &argp->mode))
629 return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode,
630 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
633 typedef struct drm_agp_info32 {
634 int agp_version_major;
635 int agp_version_minor;
637 u32 aperture_base; /* physical address */
638 u32 aperture_size; /* bytes */
639 u32 memory_allowed; /* bytes */
642 /* PCI information */
643 unsigned short id_vendor;
644 unsigned short id_device;
647 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
650 drm_agp_info32_t __user *argp = (void __user *)arg;
651 drm_agp_info32_t i32;
652 struct drm_agp_info info;
655 err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH);
659 i32.agp_version_major = info.agp_version_major;
660 i32.agp_version_minor = info.agp_version_minor;
661 i32.mode = info.mode;
662 i32.aperture_base = info.aperture_base;
663 i32.aperture_size = info.aperture_size;
664 i32.memory_allowed = info.memory_allowed;
665 i32.memory_used = info.memory_used;
666 i32.id_vendor = info.id_vendor;
667 i32.id_device = info.id_device;
668 if (copy_to_user(argp, &i32, sizeof(i32)))
674 typedef struct drm_agp_buffer32 {
675 u32 size; /**< In bytes -- will round to page boundary */
676 u32 handle; /**< Used for binding / unbinding */
677 u32 type; /**< Type of memory to allocate */
678 u32 physical; /**< Physical used by i810 */
679 } drm_agp_buffer32_t;
681 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
684 drm_agp_buffer32_t __user *argp = (void __user *)arg;
685 drm_agp_buffer32_t req32;
686 struct drm_agp_buffer request;
689 if (copy_from_user(&req32, argp, sizeof(req32)))
692 request.size = req32.size;
693 request.type = req32.type;
694 err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request,
695 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
699 req32.handle = request.handle;
700 req32.physical = request.physical;
701 if (copy_to_user(argp, &req32, sizeof(req32))) {
702 drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
703 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
710 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
713 drm_agp_buffer32_t __user *argp = (void __user *)arg;
714 struct drm_agp_buffer request;
716 if (get_user(request.handle, &argp->handle))
719 return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
720 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
723 typedef struct drm_agp_binding32 {
724 u32 handle; /**< From drm_agp_buffer */
725 u32 offset; /**< In bytes -- will round to page boundary */
726 } drm_agp_binding32_t;
728 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
731 drm_agp_binding32_t __user *argp = (void __user *)arg;
732 drm_agp_binding32_t req32;
733 struct drm_agp_binding request;
735 if (copy_from_user(&req32, argp, sizeof(req32)))
738 request.handle = req32.handle;
739 request.offset = req32.offset;
740 return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request,
741 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
744 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
747 drm_agp_binding32_t __user *argp = (void __user *)arg;
748 struct drm_agp_binding request;
750 if (get_user(request.handle, &argp->handle))
753 return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request,
754 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
756 #endif /* CONFIG_AGP */
758 #if IS_ENABLED(CONFIG_DRM_LEGACY)
759 typedef struct drm_scatter_gather32 {
760 u32 size; /**< In bytes -- will round to page boundary */
761 u32 handle; /**< Used for mapping / unmapping */
762 } drm_scatter_gather32_t;
764 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
767 drm_scatter_gather32_t __user *argp = (void __user *)arg;
768 struct drm_scatter_gather request;
771 if (get_user(request.size, &argp->size))
774 err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
775 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
779 /* XXX not sure about the handle conversion here... */
780 if (put_user(request.handle >> PAGE_SHIFT, &argp->handle))
786 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
789 drm_scatter_gather32_t __user *argp = (void __user *)arg;
790 struct drm_scatter_gather request;
793 if (get_user(x, &argp->handle))
795 request.handle = x << PAGE_SHIFT;
796 return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
797 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
800 #if defined(CONFIG_X86)
801 typedef struct drm_update_draw32 {
802 drm_drawable_t handle;
805 /* 64-bit version has a 32-bit pad here */
806 u64 data; /**< Pointer */
807 } __attribute__((packed)) drm_update_draw32_t;
809 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
812 drm_update_draw32_t update32;
813 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
816 return drm_ioctl_kernel(file, drm_noop, NULL,
817 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
821 struct drm_wait_vblank_request32 {
822 enum drm_vblank_seq_type type;
823 unsigned int sequence;
827 struct drm_wait_vblank_reply32 {
828 enum drm_vblank_seq_type type;
829 unsigned int sequence;
834 typedef union drm_wait_vblank32 {
835 struct drm_wait_vblank_request32 request;
836 struct drm_wait_vblank_reply32 reply;
837 } drm_wait_vblank32_t;
839 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
842 drm_wait_vblank32_t __user *argp = (void __user *)arg;
843 drm_wait_vblank32_t req32;
844 union drm_wait_vblank req;
847 if (copy_from_user(&req32, argp, sizeof(req32)))
850 req.request.type = req32.request.type;
851 req.request.sequence = req32.request.sequence;
852 req.request.signal = req32.request.signal;
853 err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
857 req32.reply.type = req.reply.type;
858 req32.reply.sequence = req.reply.sequence;
859 req32.reply.tval_sec = req.reply.tval_sec;
860 req32.reply.tval_usec = req.reply.tval_usec;
861 if (copy_to_user(argp, &req32, sizeof(req32)))
867 #if defined(CONFIG_X86)
868 typedef struct drm_mode_fb_cmd232 {
878 } __attribute__((packed)) drm_mode_fb_cmd232_t;
880 static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
883 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
884 struct drm_mode_fb_cmd2 req64;
887 if (copy_from_user(&req64, argp,
888 offsetof(drm_mode_fb_cmd232_t, modifier)))
891 if (copy_from_user(&req64.modifier, &argp->modifier,
892 sizeof(req64.modifier)))
895 err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64,
900 if (put_user(req64.fb_id, &argp->fb_id))
908 drm_ioctl_compat_t *fn;
910 } drm_compat_ioctls[] = {
911 #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
912 DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
913 DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
914 #if IS_ENABLED(CONFIG_DRM_LEGACY)
915 DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
917 DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
918 DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
919 DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
920 #if IS_ENABLED(CONFIG_DRM_LEGACY)
921 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
922 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
923 DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
924 DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
925 DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
926 DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
927 DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
928 DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
929 DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
930 DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
931 DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
933 #if IS_ENABLED(CONFIG_AGP)
934 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
935 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
936 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
937 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
938 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
939 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
941 #if IS_ENABLED(CONFIG_DRM_LEGACY)
942 DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
943 DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
945 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
946 DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
948 DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
949 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
950 DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
955 * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
956 * @filp: file this ioctl is called on
957 * @cmd: ioctl cmd number
958 * @arg: user argument
960 * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
961 * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
962 * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
963 * botched IOCTL itself, it must handle those by wrapping this function.
966 * Zero on success, negative error code on failure.
968 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
970 unsigned int nr = DRM_IOCTL_NR(cmd);
971 struct drm_file *file_priv = filp->private_data;
972 drm_ioctl_compat_t *fn;
975 /* Assume that ioctls without an explicit compat routine will just
976 * work. This may not always be a good assumption, but it's better
977 * than always failing.
979 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
980 return drm_ioctl(filp, cmd, arg);
982 fn = drm_compat_ioctls[nr].fn;
984 return drm_ioctl(filp, cmd, arg);
986 DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
987 task_pid_nr(current),
988 (long)old_encode_dev(file_priv->minor->kdev->devt),
989 file_priv->authenticated,
990 drm_compat_ioctls[nr].name);
991 ret = (*fn)(filp, cmd, arg);
993 DRM_DEBUG("ret = %d\n", ret);
996 EXPORT_SYMBOL(drm_compat_ioctl);