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_agpsupport.h>
35 #include <drm/drm_file.h>
36 #include <drm/drm_print.h>
38 #include "drm_crtc_internal.h"
39 #include "drm_internal.h"
40 #include "drm_legacy.h"
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)
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)
56 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
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)
61 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
62 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
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)
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)
74 #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
76 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
78 #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
80 typedef struct drm_version_32 {
81 int version_major; /* Major version */
82 int version_minor; /* Minor version */
83 int version_patchlevel; /* Patch level */
84 u32 name_len; /* Length of name buffer */
85 u32 name; /* Name of driver */
86 u32 date_len; /* Length of date buffer */
87 u32 date; /* User-space buffer to hold date */
88 u32 desc_len; /* Length of desc buffer */
89 u32 desc; /* User-space buffer to hold desc */
92 static int compat_drm_version(struct file *file, unsigned int cmd,
99 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
102 memset(&v, 0, sizeof(v));
104 v = (struct drm_version) {
105 .name_len = v32.name_len,
106 .name = compat_ptr(v32.name),
107 .date_len = v32.date_len,
108 .date = compat_ptr(v32.date),
109 .desc_len = v32.desc_len,
110 .desc = compat_ptr(v32.desc),
112 err = drm_ioctl_kernel(file, drm_version, &v,
117 v32.version_major = v.version_major;
118 v32.version_minor = v.version_minor;
119 v32.version_patchlevel = v.version_patchlevel;
120 v32.name_len = v.name_len;
121 v32.date_len = v.date_len;
122 v32.desc_len = v.desc_len;
123 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
128 typedef struct drm_unique32 {
129 u32 unique_len; /* Length of unique */
130 u32 unique; /* Unique name for driver instantiation */
133 static int compat_drm_getunique(struct file *file, unsigned int cmd,
137 struct drm_unique uq;
140 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
143 memset(&uq, 0, sizeof(uq));
145 uq = (struct drm_unique){
146 .unique_len = uq32.unique_len,
147 .unique = compat_ptr(uq32.unique),
150 err = drm_ioctl_kernel(file, drm_getunique, &uq, 0);
154 uq32.unique_len = uq.unique_len;
155 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
160 static int compat_drm_setunique(struct file *file, unsigned int cmd,
167 #if IS_ENABLED(CONFIG_DRM_LEGACY)
168 typedef struct drm_map32 {
169 u32 offset; /* Requested physical address (0 for SAREA) */
170 u32 size; /* Requested physical size (bytes) */
171 enum drm_map_type type; /* Type of memory to map */
172 enum drm_map_flags flags; /* Flags */
173 u32 handle; /* User-space: "Handle" to pass to mmap() */
174 int mtrr; /* MTRR slot used */
177 static int compat_drm_getmap(struct file *file, unsigned int cmd,
180 drm_map32_t __user *argp = (void __user *)arg;
185 if (copy_from_user(&m32, argp, sizeof(m32)))
188 map.offset = m32.offset;
189 err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0);
193 m32.offset = map.offset;
196 m32.flags = map.flags;
197 m32.handle = ptr_to_compat((void __user *)map.handle);
199 if (copy_to_user(argp, &m32, sizeof(m32)))
205 static int compat_drm_addmap(struct file *file, unsigned int cmd,
208 drm_map32_t __user *argp = (void __user *)arg;
213 if (copy_from_user(&m32, argp, sizeof(m32)))
216 map.offset = m32.offset;
219 map.flags = m32.flags;
221 err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
222 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
226 m32.offset = map.offset;
228 m32.handle = ptr_to_compat((void __user *)map.handle);
229 if (map.handle != compat_ptr(m32.handle))
230 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
231 map.handle, m32.type, m32.offset);
233 if (copy_to_user(argp, &m32, sizeof(m32)))
239 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
242 drm_map32_t __user *argp = (void __user *)arg;
246 if (get_user(handle, &argp->handle))
248 map.handle = compat_ptr(handle);
249 return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
253 typedef struct drm_client32 {
254 int idx; /* Which client desired? */
255 int auth; /* Is client authenticated? */
256 u32 pid; /* Process ID */
257 u32 uid; /* User ID */
258 u32 magic; /* Magic */
259 u32 iocs; /* Ioctl count */
262 static int compat_drm_getclient(struct file *file, unsigned int cmd,
266 drm_client32_t __user *argp = (void __user *)arg;
267 struct drm_client client;
270 if (copy_from_user(&c32, argp, sizeof(c32)))
273 memset(&client, 0, sizeof(client));
275 client.idx = c32.idx;
277 err = drm_ioctl_kernel(file, drm_getclient, &client, 0);
281 c32.idx = client.idx;
282 c32.auth = client.auth;
283 c32.pid = client.pid;
284 c32.uid = client.uid;
285 c32.magic = client.magic;
286 c32.iocs = client.iocs;
288 if (copy_to_user(argp, &c32, sizeof(c32)))
293 typedef struct drm_stats32 {
297 enum drm_stat_type type;
301 static int compat_drm_getstats(struct file *file, unsigned int cmd,
304 drm_stats32_t __user *argp = (void __user *)arg;
307 err = drm_ioctl_kernel(file, drm_noop, NULL, 0);
311 if (clear_user(argp, sizeof(drm_stats32_t)))
316 #if IS_ENABLED(CONFIG_DRM_LEGACY)
317 typedef struct drm_buf_desc32 {
318 int count; /* Number of buffers of this size */
319 int size; /* Size in bytes */
320 int low_mark; /* Low water mark */
321 int high_mark; /* High water mark */
323 u32 agp_start; /* Start address in the AGP aperture */
326 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
329 drm_buf_desc32_t __user *argp = (void __user *)arg;
330 drm_buf_desc32_t desc32;
331 struct drm_buf_desc desc;
334 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
337 desc = (struct drm_buf_desc){
338 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
339 desc32.flags, desc32.agp_start
342 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
343 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
347 desc32 = (drm_buf_desc32_t){
348 desc.count, desc.size, desc.low_mark, desc.high_mark,
349 desc.flags, desc.agp_start
351 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
357 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
360 drm_buf_desc32_t b32;
361 drm_buf_desc32_t __user *argp = (void __user *)arg;
362 struct drm_buf_desc buf;
364 if (copy_from_user(&b32, argp, sizeof(b32)))
368 buf.low_mark = b32.low_mark;
369 buf.high_mark = b32.high_mark;
371 return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
372 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
375 typedef struct drm_buf_info32 {
376 int count; /**< Entries in list */
380 static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
382 drm_buf_info32_t *request = data;
383 drm_buf_desc32_t __user *to = compat_ptr(request->list);
384 drm_buf_desc32_t v = {.count = from->buf_count,
385 .size = from->buf_size,
386 .low_mark = from->low_mark,
387 .high_mark = from->high_mark};
389 if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
394 static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
395 struct drm_file *file_priv)
397 drm_buf_info32_t *request = data;
399 return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
402 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
405 drm_buf_info32_t req32;
406 drm_buf_info32_t __user *argp = (void __user *)arg;
409 if (copy_from_user(&req32, argp, sizeof(req32)))
415 err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
419 if (put_user(req32.count, &argp->count))
425 typedef struct drm_buf_pub32 {
426 int idx; /**< Index into the master buffer list */
427 int total; /**< Buffer size */
428 int used; /**< Amount of buffer in use (for DMA) */
429 u32 address; /**< Address of buffer */
432 typedef struct drm_buf_map32 {
433 int count; /**< Length of the buffer list */
434 u32 virtual; /**< Mmap'd area in user-virtual */
435 u32 list; /**< Buffer information */
438 static int map_one_buf32(void *data, int idx, unsigned long virtual,
441 drm_buf_map32_t *request = data;
442 drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
446 v.total = buf->total;
448 v.address = virtual + buf->offset;
449 if (copy_to_user(to, &v, sizeof(v)))
454 static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
455 struct drm_file *file_priv)
457 drm_buf_map32_t *request = data;
459 int err = __drm_legacy_mapbufs(dev, data, &request->count,
462 request->virtual = ptr_to_compat(v);
466 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
469 drm_buf_map32_t __user *argp = (void __user *)arg;
470 drm_buf_map32_t req32;
473 if (copy_from_user(&req32, argp, sizeof(req32)))
478 err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
482 if (put_user(req32.count, &argp->count)
483 || put_user(req32.virtual, &argp->virtual))
489 typedef struct drm_buf_free32 {
494 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
497 drm_buf_free32_t req32;
498 struct drm_buf_free request;
499 drm_buf_free32_t __user *argp = (void __user *)arg;
501 if (copy_from_user(&req32, argp, sizeof(req32)))
504 request.count = req32.count;
505 request.list = compat_ptr(req32.list);
506 return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
509 typedef struct drm_ctx_priv_map32 {
510 unsigned int ctx_id; /**< Context requesting private mapping */
511 u32 handle; /**< Handle of map */
512 } drm_ctx_priv_map32_t;
514 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
517 drm_ctx_priv_map32_t req32;
518 struct drm_ctx_priv_map request;
519 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
521 if (copy_from_user(&req32, argp, sizeof(req32)))
524 request.ctx_id = req32.ctx_id;
525 request.handle = compat_ptr(req32.handle);
526 return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
527 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
530 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
533 struct drm_ctx_priv_map req;
534 drm_ctx_priv_map32_t req32;
535 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
538 if (copy_from_user(&req32, argp, sizeof(req32)))
541 req.ctx_id = req32.ctx_id;
542 err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
546 req32.handle = ptr_to_compat((void __user *)req.handle);
547 if (copy_to_user(argp, &req32, sizeof(req32)))
553 typedef struct drm_ctx_res32 {
558 static int compat_drm_resctx(struct file *file, unsigned int cmd,
561 drm_ctx_res32_t __user *argp = (void __user *)arg;
562 drm_ctx_res32_t res32;
563 struct drm_ctx_res res;
566 if (copy_from_user(&res32, argp, sizeof(res32)))
569 res.count = res32.count;
570 res.contexts = compat_ptr(res32.contexts);
571 err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
575 res32.count = res.count;
576 if (copy_to_user(argp, &res32, sizeof(res32)))
582 typedef struct drm_dma32 {
583 int context; /**< Context handle */
584 int send_count; /**< Number of buffers to send */
585 u32 send_indices; /**< List of handles to buffers */
586 u32 send_sizes; /**< Lengths of data to send */
587 enum drm_dma_flags flags; /**< Flags */
588 int request_count; /**< Number of buffers requested */
589 int request_size; /**< Desired size for buffers */
590 u32 request_indices; /**< Buffer information */
592 int granted_count; /**< Number of buffers granted */
595 static int compat_drm_dma(struct file *file, unsigned int cmd,
599 drm_dma32_t __user *argp = (void __user *)arg;
603 if (copy_from_user(&d32, argp, sizeof(d32)))
606 d.context = d32.context;
607 d.send_count = d32.send_count;
608 d.send_indices = compat_ptr(d32.send_indices);
609 d.send_sizes = compat_ptr(d32.send_sizes);
611 d.request_count = d32.request_count;
612 d.request_indices = compat_ptr(d32.request_indices);
613 d.request_sizes = compat_ptr(d32.request_sizes);
614 err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
618 if (put_user(d.request_size, &argp->request_size)
619 || put_user(d.granted_count, &argp->granted_count))
626 #if IS_ENABLED(CONFIG_AGP)
627 typedef struct drm_agp_mode32 {
628 u32 mode; /**< AGP mode */
631 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
634 drm_agp_mode32_t __user *argp = (void __user *)arg;
635 struct drm_agp_mode mode;
637 if (get_user(mode.mode, &argp->mode))
640 return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode,
641 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
644 typedef struct drm_agp_info32 {
645 int agp_version_major;
646 int agp_version_minor;
648 u32 aperture_base; /* physical address */
649 u32 aperture_size; /* bytes */
650 u32 memory_allowed; /* bytes */
653 /* PCI information */
654 unsigned short id_vendor;
655 unsigned short id_device;
658 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
661 drm_agp_info32_t __user *argp = (void __user *)arg;
662 drm_agp_info32_t i32;
663 struct drm_agp_info info;
666 err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH);
670 i32.agp_version_major = info.agp_version_major;
671 i32.agp_version_minor = info.agp_version_minor;
672 i32.mode = info.mode;
673 i32.aperture_base = info.aperture_base;
674 i32.aperture_size = info.aperture_size;
675 i32.memory_allowed = info.memory_allowed;
676 i32.memory_used = info.memory_used;
677 i32.id_vendor = info.id_vendor;
678 i32.id_device = info.id_device;
679 if (copy_to_user(argp, &i32, sizeof(i32)))
685 typedef struct drm_agp_buffer32 {
686 u32 size; /**< In bytes -- will round to page boundary */
687 u32 handle; /**< Used for binding / unbinding */
688 u32 type; /**< Type of memory to allocate */
689 u32 physical; /**< Physical used by i810 */
690 } drm_agp_buffer32_t;
692 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
695 drm_agp_buffer32_t __user *argp = (void __user *)arg;
696 drm_agp_buffer32_t req32;
697 struct drm_agp_buffer request;
700 if (copy_from_user(&req32, argp, sizeof(req32)))
703 request.size = req32.size;
704 request.type = req32.type;
705 err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request,
706 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
710 req32.handle = request.handle;
711 req32.physical = request.physical;
712 if (copy_to_user(argp, &req32, sizeof(req32))) {
713 drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
714 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
721 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
724 drm_agp_buffer32_t __user *argp = (void __user *)arg;
725 struct drm_agp_buffer request;
727 if (get_user(request.handle, &argp->handle))
730 return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
731 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
734 typedef struct drm_agp_binding32 {
735 u32 handle; /**< From drm_agp_buffer */
736 u32 offset; /**< In bytes -- will round to page boundary */
737 } drm_agp_binding32_t;
739 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
742 drm_agp_binding32_t __user *argp = (void __user *)arg;
743 drm_agp_binding32_t req32;
744 struct drm_agp_binding request;
746 if (copy_from_user(&req32, argp, sizeof(req32)))
749 request.handle = req32.handle;
750 request.offset = req32.offset;
751 return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request,
752 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
755 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
758 drm_agp_binding32_t __user *argp = (void __user *)arg;
759 struct drm_agp_binding request;
761 if (get_user(request.handle, &argp->handle))
764 return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request,
765 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
767 #endif /* CONFIG_AGP */
769 #if IS_ENABLED(CONFIG_DRM_LEGACY)
770 typedef struct drm_scatter_gather32 {
771 u32 size; /**< In bytes -- will round to page boundary */
772 u32 handle; /**< Used for mapping / unmapping */
773 } drm_scatter_gather32_t;
775 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
778 drm_scatter_gather32_t __user *argp = (void __user *)arg;
779 struct drm_scatter_gather request;
782 if (get_user(request.size, &argp->size))
785 err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
786 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
790 /* XXX not sure about the handle conversion here... */
791 if (put_user(request.handle >> PAGE_SHIFT, &argp->handle))
797 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
800 drm_scatter_gather32_t __user *argp = (void __user *)arg;
801 struct drm_scatter_gather request;
804 if (get_user(x, &argp->handle))
806 request.handle = x << PAGE_SHIFT;
807 return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
808 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
811 #if defined(CONFIG_X86)
812 typedef struct drm_update_draw32 {
813 drm_drawable_t handle;
816 /* 64-bit version has a 32-bit pad here */
817 u64 data; /**< Pointer */
818 } __attribute__((packed)) drm_update_draw32_t;
820 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
823 drm_update_draw32_t update32;
825 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
828 return drm_ioctl_kernel(file, drm_noop, NULL,
829 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
833 struct drm_wait_vblank_request32 {
834 enum drm_vblank_seq_type type;
835 unsigned int sequence;
839 struct drm_wait_vblank_reply32 {
840 enum drm_vblank_seq_type type;
841 unsigned int sequence;
846 typedef union drm_wait_vblank32 {
847 struct drm_wait_vblank_request32 request;
848 struct drm_wait_vblank_reply32 reply;
849 } drm_wait_vblank32_t;
851 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
854 drm_wait_vblank32_t __user *argp = (void __user *)arg;
855 drm_wait_vblank32_t req32;
856 union drm_wait_vblank req;
859 if (copy_from_user(&req32, argp, sizeof(req32)))
862 memset(&req, 0, sizeof(req));
864 req.request.type = req32.request.type;
865 req.request.sequence = req32.request.sequence;
866 req.request.signal = req32.request.signal;
867 err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
869 req32.reply.type = req.reply.type;
870 req32.reply.sequence = req.reply.sequence;
871 req32.reply.tval_sec = req.reply.tval_sec;
872 req32.reply.tval_usec = req.reply.tval_usec;
873 if (copy_to_user(argp, &req32, sizeof(req32)))
879 #if defined(CONFIG_X86)
880 typedef struct drm_mode_fb_cmd232 {
890 } __attribute__((packed)) drm_mode_fb_cmd232_t;
892 static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
895 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
896 struct drm_mode_fb_cmd2 req64;
899 memset(&req64, 0, sizeof(req64));
901 if (copy_from_user(&req64, argp,
902 offsetof(drm_mode_fb_cmd232_t, modifier)))
905 if (copy_from_user(&req64.modifier, &argp->modifier,
906 sizeof(req64.modifier)))
909 err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0);
913 if (put_user(req64.fb_id, &argp->fb_id))
921 drm_ioctl_compat_t *fn;
923 } drm_compat_ioctls[] = {
924 #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
925 DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
926 DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
927 #if IS_ENABLED(CONFIG_DRM_LEGACY)
928 DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
930 DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
931 DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
932 DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
933 #if IS_ENABLED(CONFIG_DRM_LEGACY)
934 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
935 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
936 DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
937 DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
938 DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
939 DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
940 DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
941 DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
942 DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
943 DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
944 DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
946 #if IS_ENABLED(CONFIG_AGP)
947 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
948 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
949 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
950 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
951 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
952 DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
954 #if IS_ENABLED(CONFIG_DRM_LEGACY)
955 DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
956 DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
958 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
959 DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
961 DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
962 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
963 DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
968 * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
969 * @filp: file this ioctl is called on
970 * @cmd: ioctl cmd number
971 * @arg: user argument
973 * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
974 * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
975 * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
976 * botched IOCTL itself, it must handle those by wrapping this function.
979 * Zero on success, negative error code on failure.
981 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
983 unsigned int nr = DRM_IOCTL_NR(cmd);
984 struct drm_file *file_priv = filp->private_data;
985 drm_ioctl_compat_t *fn;
988 /* Assume that ioctls without an explicit compat routine will just
989 * work. This may not always be a good assumption, but it's better
990 * than always failing.
992 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
993 return drm_ioctl(filp, cmd, arg);
995 fn = drm_compat_ioctls[nr].fn;
997 return drm_ioctl(filp, cmd, arg);
999 DRM_DEBUG("comm=\"%s\", pid=%d, dev=0x%lx, auth=%d, %s\n",
1000 current->comm, task_pid_nr(current),
1001 (long)old_encode_dev(file_priv->minor->kdev->devt),
1002 file_priv->authenticated,
1003 drm_compat_ioctls[nr].name);
1004 ret = (*fn)(filp, cmd, arg);
1006 DRM_DEBUG("ret = %d\n", ret);
1009 EXPORT_SYMBOL(drm_compat_ioctl);