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>
34 #include <drm/drm_file.h>
35 #include <drm/drm_print.h>
37 #include "drm_crtc_internal.h"
38 #include "drm_internal.h"
39 #include "drm_legacy.h"
41 #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
42 #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
43 #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
44 #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
45 #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
47 #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
48 #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
49 #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
50 #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
51 #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
52 #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
53 #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
55 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
57 #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
58 #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
60 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
61 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
63 #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
64 #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
65 #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
66 #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
67 #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
68 #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
70 #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
71 #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
73 #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
75 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
77 #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
79 typedef struct drm_version_32 {
80 int version_major; /* Major version */
81 int version_minor; /* Minor version */
82 int version_patchlevel; /* Patch level */
83 u32 name_len; /* Length of name buffer */
84 u32 name; /* Name of driver */
85 u32 date_len; /* Length of date buffer */
86 u32 date; /* User-space buffer to hold date */
87 u32 desc_len; /* Length of desc buffer */
88 u32 desc; /* User-space buffer to hold desc */
91 static int compat_drm_version(struct file *file, unsigned int cmd,
98 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
101 memset(&v, 0, sizeof(v));
103 v = (struct drm_version) {
104 .name_len = v32.name_len,
105 .name = compat_ptr(v32.name),
106 .date_len = v32.date_len,
107 .date = compat_ptr(v32.date),
108 .desc_len = v32.desc_len,
109 .desc = compat_ptr(v32.desc),
111 err = drm_ioctl_kernel(file, drm_version, &v,
116 v32.version_major = v.version_major;
117 v32.version_minor = v.version_minor;
118 v32.version_patchlevel = v.version_patchlevel;
119 v32.name_len = v.name_len;
120 v32.date_len = v.date_len;
121 v32.desc_len = v.desc_len;
122 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
127 typedef struct drm_unique32 {
128 u32 unique_len; /* Length of unique */
129 u32 unique; /* Unique name for driver instantiation */
132 static int compat_drm_getunique(struct file *file, unsigned int cmd,
136 struct drm_unique uq;
139 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
142 memset(&uq, 0, sizeof(uq));
144 uq = (struct drm_unique){
145 .unique_len = uq32.unique_len,
146 .unique = compat_ptr(uq32.unique),
149 err = drm_ioctl_kernel(file, drm_getunique, &uq, 0);
153 uq32.unique_len = uq.unique_len;
154 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
159 static int compat_drm_setunique(struct file *file, unsigned int cmd,
166 #if IS_ENABLED(CONFIG_DRM_LEGACY)
167 typedef struct drm_map32 {
168 u32 offset; /* Requested physical address (0 for SAREA) */
169 u32 size; /* Requested physical size (bytes) */
170 enum drm_map_type type; /* Type of memory to map */
171 enum drm_map_flags flags; /* Flags */
172 u32 handle; /* User-space: "Handle" to pass to mmap() */
173 int mtrr; /* MTRR slot used */
176 static int compat_drm_getmap(struct file *file, unsigned int cmd,
179 drm_map32_t __user *argp = (void __user *)arg;
184 if (copy_from_user(&m32, argp, sizeof(m32)))
187 map.offset = m32.offset;
188 err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0);
192 m32.offset = map.offset;
195 m32.flags = map.flags;
196 m32.handle = ptr_to_compat((void __user *)map.handle);
198 if (copy_to_user(argp, &m32, sizeof(m32)))
204 static int compat_drm_addmap(struct file *file, unsigned int cmd,
207 drm_map32_t __user *argp = (void __user *)arg;
212 if (copy_from_user(&m32, argp, sizeof(m32)))
215 map.offset = m32.offset;
218 map.flags = m32.flags;
220 err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
221 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
225 m32.offset = map.offset;
227 m32.handle = ptr_to_compat((void __user *)map.handle);
228 if (map.handle != compat_ptr(m32.handle))
229 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
230 map.handle, m32.type, m32.offset);
232 if (copy_to_user(argp, &m32, sizeof(m32)))
238 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
241 drm_map32_t __user *argp = (void __user *)arg;
245 if (get_user(handle, &argp->handle))
247 map.handle = compat_ptr(handle);
248 return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
252 typedef struct drm_client32 {
253 int idx; /* Which client desired? */
254 int auth; /* Is client authenticated? */
255 u32 pid; /* Process ID */
256 u32 uid; /* User ID */
257 u32 magic; /* Magic */
258 u32 iocs; /* Ioctl count */
261 static int compat_drm_getclient(struct file *file, unsigned int cmd,
265 drm_client32_t __user *argp = (void __user *)arg;
266 struct drm_client client;
269 if (copy_from_user(&c32, argp, sizeof(c32)))
272 memset(&client, 0, sizeof(client));
274 client.idx = c32.idx;
276 err = drm_ioctl_kernel(file, drm_getclient, &client, 0);
280 c32.idx = client.idx;
281 c32.auth = client.auth;
282 c32.pid = client.pid;
283 c32.uid = client.uid;
284 c32.magic = client.magic;
285 c32.iocs = client.iocs;
287 if (copy_to_user(argp, &c32, sizeof(c32)))
292 typedef struct drm_stats32 {
296 enum drm_stat_type type;
300 static int compat_drm_getstats(struct file *file, unsigned int cmd,
303 drm_stats32_t __user *argp = (void __user *)arg;
305 /* getstats is defunct, just clear */
306 if (clear_user(argp, sizeof(drm_stats32_t)))
311 #if IS_ENABLED(CONFIG_DRM_LEGACY)
312 typedef struct drm_buf_desc32 {
313 int count; /* Number of buffers of this size */
314 int size; /* Size in bytes */
315 int low_mark; /* Low water mark */
316 int high_mark; /* High water mark */
318 u32 agp_start; /* Start address in the AGP aperture */
321 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
324 drm_buf_desc32_t __user *argp = (void __user *)arg;
325 drm_buf_desc32_t desc32;
326 struct drm_buf_desc desc;
329 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
332 desc = (struct drm_buf_desc){
333 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
334 desc32.flags, desc32.agp_start
337 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
338 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
342 desc32 = (drm_buf_desc32_t){
343 desc.count, desc.size, desc.low_mark, desc.high_mark,
344 desc.flags, desc.agp_start
346 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
352 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
355 drm_buf_desc32_t b32;
356 drm_buf_desc32_t __user *argp = (void __user *)arg;
357 struct drm_buf_desc buf;
359 if (copy_from_user(&b32, argp, sizeof(b32)))
363 buf.low_mark = b32.low_mark;
364 buf.high_mark = b32.high_mark;
366 return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
367 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
370 typedef struct drm_buf_info32 {
371 int count; /**< Entries in list */
375 static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
377 drm_buf_info32_t *request = data;
378 drm_buf_desc32_t __user *to = compat_ptr(request->list);
379 drm_buf_desc32_t v = {.count = from->buf_count,
380 .size = from->buf_size,
381 .low_mark = from->low_mark,
382 .high_mark = from->high_mark};
384 if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
389 static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
390 struct drm_file *file_priv)
392 drm_buf_info32_t *request = data;
394 return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
397 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
400 drm_buf_info32_t req32;
401 drm_buf_info32_t __user *argp = (void __user *)arg;
404 if (copy_from_user(&req32, argp, sizeof(req32)))
410 err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
414 if (put_user(req32.count, &argp->count))
420 typedef struct drm_buf_pub32 {
421 int idx; /**< Index into the master buffer list */
422 int total; /**< Buffer size */
423 int used; /**< Amount of buffer in use (for DMA) */
424 u32 address; /**< Address of buffer */
427 typedef struct drm_buf_map32 {
428 int count; /**< Length of the buffer list */
429 u32 virtual; /**< Mmap'd area in user-virtual */
430 u32 list; /**< Buffer information */
433 static int map_one_buf32(void *data, int idx, unsigned long virtual,
436 drm_buf_map32_t *request = data;
437 drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
441 v.total = buf->total;
443 v.address = virtual + buf->offset;
444 if (copy_to_user(to, &v, sizeof(v)))
449 static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
450 struct drm_file *file_priv)
452 drm_buf_map32_t *request = data;
454 int err = __drm_legacy_mapbufs(dev, data, &request->count,
457 request->virtual = ptr_to_compat(v);
461 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
464 drm_buf_map32_t __user *argp = (void __user *)arg;
465 drm_buf_map32_t req32;
468 if (copy_from_user(&req32, argp, sizeof(req32)))
473 err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
477 if (put_user(req32.count, &argp->count)
478 || put_user(req32.virtual, &argp->virtual))
484 typedef struct drm_buf_free32 {
489 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
492 drm_buf_free32_t req32;
493 struct drm_buf_free request;
494 drm_buf_free32_t __user *argp = (void __user *)arg;
496 if (copy_from_user(&req32, argp, sizeof(req32)))
499 request.count = req32.count;
500 request.list = compat_ptr(req32.list);
501 return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
504 typedef struct drm_ctx_priv_map32 {
505 unsigned int ctx_id; /**< Context requesting private mapping */
506 u32 handle; /**< Handle of map */
507 } drm_ctx_priv_map32_t;
509 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
512 drm_ctx_priv_map32_t req32;
513 struct drm_ctx_priv_map request;
514 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
516 if (copy_from_user(&req32, argp, sizeof(req32)))
519 request.ctx_id = req32.ctx_id;
520 request.handle = compat_ptr(req32.handle);
521 return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
522 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
525 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
528 struct drm_ctx_priv_map req;
529 drm_ctx_priv_map32_t req32;
530 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
533 if (copy_from_user(&req32, argp, sizeof(req32)))
536 req.ctx_id = req32.ctx_id;
537 err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
541 req32.handle = ptr_to_compat((void __user *)req.handle);
542 if (copy_to_user(argp, &req32, sizeof(req32)))
548 typedef struct drm_ctx_res32 {
553 static int compat_drm_resctx(struct file *file, unsigned int cmd,
556 drm_ctx_res32_t __user *argp = (void __user *)arg;
557 drm_ctx_res32_t res32;
558 struct drm_ctx_res res;
561 if (copy_from_user(&res32, argp, sizeof(res32)))
564 res.count = res32.count;
565 res.contexts = compat_ptr(res32.contexts);
566 err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
570 res32.count = res.count;
571 if (copy_to_user(argp, &res32, sizeof(res32)))
577 typedef struct drm_dma32 {
578 int context; /**< Context handle */
579 int send_count; /**< Number of buffers to send */
580 u32 send_indices; /**< List of handles to buffers */
581 u32 send_sizes; /**< Lengths of data to send */
582 enum drm_dma_flags flags; /**< Flags */
583 int request_count; /**< Number of buffers requested */
584 int request_size; /**< Desired size for buffers */
585 u32 request_indices; /**< Buffer information */
587 int granted_count; /**< Number of buffers granted */
590 static int compat_drm_dma(struct file *file, unsigned int cmd,
594 drm_dma32_t __user *argp = (void __user *)arg;
598 if (copy_from_user(&d32, argp, sizeof(d32)))
601 d.context = d32.context;
602 d.send_count = d32.send_count;
603 d.send_indices = compat_ptr(d32.send_indices);
604 d.send_sizes = compat_ptr(d32.send_sizes);
606 d.request_count = d32.request_count;
607 d.request_indices = compat_ptr(d32.request_indices);
608 d.request_sizes = compat_ptr(d32.request_sizes);
609 err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
613 if (put_user(d.request_size, &argp->request_size)
614 || put_user(d.granted_count, &argp->granted_count))
621 #if IS_ENABLED(CONFIG_DRM_LEGACY)
622 #if IS_ENABLED(CONFIG_AGP)
623 typedef struct drm_agp_mode32 {
624 u32 mode; /**< AGP mode */
627 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
630 drm_agp_mode32_t __user *argp = (void __user *)arg;
631 struct drm_agp_mode mode;
633 if (get_user(mode.mode, &argp->mode))
636 return drm_ioctl_kernel(file, drm_legacy_agp_enable_ioctl, &mode,
637 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
640 typedef struct drm_agp_info32 {
641 int agp_version_major;
642 int agp_version_minor;
644 u32 aperture_base; /* physical address */
645 u32 aperture_size; /* bytes */
646 u32 memory_allowed; /* bytes */
649 /* PCI information */
650 unsigned short id_vendor;
651 unsigned short id_device;
654 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
657 drm_agp_info32_t __user *argp = (void __user *)arg;
658 drm_agp_info32_t i32;
659 struct drm_agp_info info;
662 err = drm_ioctl_kernel(file, drm_legacy_agp_info_ioctl, &info, DRM_AUTH);
666 i32.agp_version_major = info.agp_version_major;
667 i32.agp_version_minor = info.agp_version_minor;
668 i32.mode = info.mode;
669 i32.aperture_base = info.aperture_base;
670 i32.aperture_size = info.aperture_size;
671 i32.memory_allowed = info.memory_allowed;
672 i32.memory_used = info.memory_used;
673 i32.id_vendor = info.id_vendor;
674 i32.id_device = info.id_device;
675 if (copy_to_user(argp, &i32, sizeof(i32)))
681 typedef struct drm_agp_buffer32 {
682 u32 size; /**< In bytes -- will round to page boundary */
683 u32 handle; /**< Used for binding / unbinding */
684 u32 type; /**< Type of memory to allocate */
685 u32 physical; /**< Physical used by i810 */
686 } drm_agp_buffer32_t;
688 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
691 drm_agp_buffer32_t __user *argp = (void __user *)arg;
692 drm_agp_buffer32_t req32;
693 struct drm_agp_buffer request;
696 if (copy_from_user(&req32, argp, sizeof(req32)))
699 request.size = req32.size;
700 request.type = req32.type;
701 err = drm_ioctl_kernel(file, drm_legacy_agp_alloc_ioctl, &request,
702 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
706 req32.handle = request.handle;
707 req32.physical = request.physical;
708 if (copy_to_user(argp, &req32, sizeof(req32))) {
709 drm_ioctl_kernel(file, drm_legacy_agp_free_ioctl, &request,
710 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
717 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
720 drm_agp_buffer32_t __user *argp = (void __user *)arg;
721 struct drm_agp_buffer request;
723 if (get_user(request.handle, &argp->handle))
726 return drm_ioctl_kernel(file, drm_legacy_agp_free_ioctl, &request,
727 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
730 typedef struct drm_agp_binding32 {
731 u32 handle; /**< From drm_agp_buffer */
732 u32 offset; /**< In bytes -- will round to page boundary */
733 } drm_agp_binding32_t;
735 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
738 drm_agp_binding32_t __user *argp = (void __user *)arg;
739 drm_agp_binding32_t req32;
740 struct drm_agp_binding request;
742 if (copy_from_user(&req32, argp, sizeof(req32)))
745 request.handle = req32.handle;
746 request.offset = req32.offset;
747 return drm_ioctl_kernel(file, drm_legacy_agp_bind_ioctl, &request,
748 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
751 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
754 drm_agp_binding32_t __user *argp = (void __user *)arg;
755 struct drm_agp_binding request;
757 if (get_user(request.handle, &argp->handle))
760 return drm_ioctl_kernel(file, drm_legacy_agp_unbind_ioctl, &request,
761 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
763 #endif /* CONFIG_AGP */
765 typedef struct drm_scatter_gather32 {
766 u32 size; /**< In bytes -- will round to page boundary */
767 u32 handle; /**< Used for mapping / unmapping */
768 } drm_scatter_gather32_t;
770 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
773 drm_scatter_gather32_t __user *argp = (void __user *)arg;
774 struct drm_scatter_gather request;
777 if (get_user(request.size, &argp->size))
780 err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
781 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
785 /* XXX not sure about the handle conversion here... */
786 if (put_user(request.handle >> PAGE_SHIFT, &argp->handle))
792 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
795 drm_scatter_gather32_t __user *argp = (void __user *)arg;
796 struct drm_scatter_gather request;
799 if (get_user(x, &argp->handle))
801 request.handle = x << PAGE_SHIFT;
802 return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
803 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
806 #if defined(CONFIG_X86)
807 typedef struct drm_update_draw32 {
808 drm_drawable_t handle;
811 /* 64-bit version has a 32-bit pad here */
812 u64 data; /**< Pointer */
813 } __attribute__((packed)) drm_update_draw32_t;
815 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
818 /* update_draw is defunct */
823 struct drm_wait_vblank_request32 {
824 enum drm_vblank_seq_type type;
825 unsigned int sequence;
829 struct drm_wait_vblank_reply32 {
830 enum drm_vblank_seq_type type;
831 unsigned int sequence;
836 typedef union drm_wait_vblank32 {
837 struct drm_wait_vblank_request32 request;
838 struct drm_wait_vblank_reply32 reply;
839 } drm_wait_vblank32_t;
841 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
844 drm_wait_vblank32_t __user *argp = (void __user *)arg;
845 drm_wait_vblank32_t req32;
846 union drm_wait_vblank req;
849 if (copy_from_user(&req32, argp, sizeof(req32)))
852 memset(&req, 0, sizeof(req));
854 req.request.type = req32.request.type;
855 req.request.sequence = req32.request.sequence;
856 req.request.signal = req32.request.signal;
857 err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
859 req32.reply.type = req.reply.type;
860 req32.reply.sequence = req.reply.sequence;
861 req32.reply.tval_sec = req.reply.tval_sec;
862 req32.reply.tval_usec = req.reply.tval_usec;
863 if (copy_to_user(argp, &req32, sizeof(req32)))
869 #if defined(CONFIG_X86)
870 typedef struct drm_mode_fb_cmd232 {
880 } __attribute__((packed)) drm_mode_fb_cmd232_t;
882 static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
885 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
886 struct drm_mode_fb_cmd2 req64;
889 memset(&req64, 0, sizeof(req64));
891 if (copy_from_user(&req64, argp,
892 offsetof(drm_mode_fb_cmd232_t, modifier)))
895 if (copy_from_user(&req64.modifier, &argp->modifier,
896 sizeof(req64.modifier)))
899 err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0);
903 if (put_user(req64.fb_id, &argp->fb_id))
911 drm_ioctl_compat_t *fn;
913 } drm_compat_ioctls[] = {
914 #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
915 DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
916 DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
917 #if IS_ENABLED(CONFIG_DRM_LEGACY)
918 DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
920 DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
921 DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
922 DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
923 #if IS_ENABLED(CONFIG_DRM_LEGACY)
924 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
925 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
926 DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
927 DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
928 DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
929 DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
930 DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
931 DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
932 DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
933 DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
934 DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
935 #if IS_ENABLED(CONFIG_AGP)
936 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
937 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
938 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
939 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
940 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
941 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
944 #if IS_ENABLED(CONFIG_DRM_LEGACY)
945 DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
946 DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
948 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
949 DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
951 DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
952 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
953 DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
958 * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
959 * @filp: file this ioctl is called on
960 * @cmd: ioctl cmd number
961 * @arg: user argument
963 * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
964 * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
965 * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
966 * botched IOCTL itself, it must handle those by wrapping this function.
969 * Zero on success, negative error code on failure.
971 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
973 unsigned int nr = DRM_IOCTL_NR(cmd);
974 struct drm_file *file_priv = filp->private_data;
975 struct drm_device *dev = file_priv->minor->dev;
976 drm_ioctl_compat_t *fn;
979 /* Assume that ioctls without an explicit compat routine will just
980 * work. This may not always be a good assumption, but it's better
981 * than always failing.
983 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
984 return drm_ioctl(filp, cmd, arg);
986 fn = drm_compat_ioctls[nr].fn;
988 return drm_ioctl(filp, cmd, arg);
990 drm_dbg_core(dev, "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);
997 drm_dbg_core(dev, "ret = %d\n", ret);
1000 EXPORT_SYMBOL(drm_compat_ioctl);