1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009 |
- /*
- * \file drm_ioc32.c
- *
- * 32-bit ioctl compatibility routines for the DRM.
- *
- * \author Paul Mackerras <paulus@samba.org>
- *
- * Copyright (C) Paul Mackerras 2005.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
- #include <linux/compat.h>
- #include <linux/ratelimit.h>
- #include <linux/export.h>
- #include <drm/drm_agpsupport.h>
- #include <drm/drm_file.h>
- #include <drm/drm_print.h>
- #include "drm_crtc_internal.h"
- #include "drm_internal.h"
- #include "drm_legacy.h"
- #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
- #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
- #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
- #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
- #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
- #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
- #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
- #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
- #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
- #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
- #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
- #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
- #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
- #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
- #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
- #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
- #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
- #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
- #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
- #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
- #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
- #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
- #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
- #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
- #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
- #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
- #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
- #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
- typedef struct drm_version_32 {
- int version_major; /* Major version */
- int version_minor; /* Minor version */
- int version_patchlevel; /* Patch level */
- u32 name_len; /* Length of name buffer */
- u32 name; /* Name of driver */
- u32 date_len; /* Length of date buffer */
- u32 date; /* User-space buffer to hold date */
- u32 desc_len; /* Length of desc buffer */
- u32 desc; /* User-space buffer to hold desc */
- } drm_version32_t;
- static int compat_drm_version(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_version32_t v32;
- struct drm_version v;
- int err;
- if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
- return -EFAULT;
- memset(&v, 0, sizeof(v));
- v = (struct drm_version) {
- .name_len = v32.name_len,
- .name = compat_ptr(v32.name),
- .date_len = v32.date_len,
- .date = compat_ptr(v32.date),
- .desc_len = v32.desc_len,
- .desc = compat_ptr(v32.desc),
- };
- err = drm_ioctl_kernel(file, drm_version, &v,
- DRM_RENDER_ALLOW);
- if (err)
- return err;
- v32.version_major = v.version_major;
- v32.version_minor = v.version_minor;
- v32.version_patchlevel = v.version_patchlevel;
- v32.name_len = v.name_len;
- v32.date_len = v.date_len;
- v32.desc_len = v.desc_len;
- if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_unique32 {
- u32 unique_len; /* Length of unique */
- u32 unique; /* Unique name for driver instantiation */
- } drm_unique32_t;
- static int compat_drm_getunique(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_unique32_t uq32;
- struct drm_unique uq;
- int err;
- if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
- return -EFAULT;
- memset(&uq, 0, sizeof(uq));
- uq = (struct drm_unique){
- .unique_len = uq32.unique_len,
- .unique = compat_ptr(uq32.unique),
- };
- err = drm_ioctl_kernel(file, drm_getunique, &uq, 0);
- if (err)
- return err;
- uq32.unique_len = uq.unique_len;
- if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
- return -EFAULT;
- return 0;
- }
- static int compat_drm_setunique(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- /* it's dead */
- return -EINVAL;
- }
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- typedef struct drm_map32 {
- u32 offset; /* Requested physical address (0 for SAREA) */
- u32 size; /* Requested physical size (bytes) */
- enum drm_map_type type; /* Type of memory to map */
- enum drm_map_flags flags; /* Flags */
- u32 handle; /* User-space: "Handle" to pass to mmap() */
- int mtrr; /* MTRR slot used */
- } drm_map32_t;
- static int compat_drm_getmap(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_map32_t __user *argp = (void __user *)arg;
- drm_map32_t m32;
- struct drm_map map;
- int err;
- if (copy_from_user(&m32, argp, sizeof(m32)))
- return -EFAULT;
- map.offset = m32.offset;
- err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0);
- if (err)
- return err;
- m32.offset = map.offset;
- m32.size = map.size;
- m32.type = map.type;
- m32.flags = map.flags;
- m32.handle = ptr_to_compat((void __user *)map.handle);
- m32.mtrr = map.mtrr;
- if (copy_to_user(argp, &m32, sizeof(m32)))
- return -EFAULT;
- return 0;
- }
- static int compat_drm_addmap(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_map32_t __user *argp = (void __user *)arg;
- drm_map32_t m32;
- struct drm_map map;
- int err;
- if (copy_from_user(&m32, argp, sizeof(m32)))
- return -EFAULT;
- map.offset = m32.offset;
- map.size = m32.size;
- map.type = m32.type;
- map.flags = m32.flags;
- err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- if (err)
- return err;
- m32.offset = map.offset;
- m32.mtrr = map.mtrr;
- m32.handle = ptr_to_compat((void __user *)map.handle);
- if (map.handle != compat_ptr(m32.handle))
- pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
- map.handle, m32.type, m32.offset);
- if (copy_to_user(argp, &m32, sizeof(m32)))
- return -EFAULT;
- return 0;
- }
- static int compat_drm_rmmap(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_map32_t __user *argp = (void __user *)arg;
- struct drm_map map;
- u32 handle;
- if (get_user(handle, &argp->handle))
- return -EFAULT;
- map.handle = compat_ptr(handle);
- return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH);
- }
- #endif
- typedef struct drm_client32 {
- int idx; /* Which client desired? */
- int auth; /* Is client authenticated? */
- u32 pid; /* Process ID */
- u32 uid; /* User ID */
- u32 magic; /* Magic */
- u32 iocs; /* Ioctl count */
- } drm_client32_t;
- static int compat_drm_getclient(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_client32_t c32;
- drm_client32_t __user *argp = (void __user *)arg;
- struct drm_client client;
- int err;
- if (copy_from_user(&c32, argp, sizeof(c32)))
- return -EFAULT;
- memset(&client, 0, sizeof(client));
- client.idx = c32.idx;
- err = drm_ioctl_kernel(file, drm_getclient, &client, 0);
- if (err)
- return err;
- c32.idx = client.idx;
- c32.auth = client.auth;
- c32.pid = client.pid;
- c32.uid = client.uid;
- c32.magic = client.magic;
- c32.iocs = client.iocs;
- if (copy_to_user(argp, &c32, sizeof(c32)))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_stats32 {
- u32 count;
- struct {
- u32 value;
- enum drm_stat_type type;
- } data[15];
- } drm_stats32_t;
- static int compat_drm_getstats(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_stats32_t __user *argp = (void __user *)arg;
- int err;
- err = drm_ioctl_kernel(file, drm_noop, NULL, 0);
- if (err)
- return err;
- if (clear_user(argp, sizeof(drm_stats32_t)))
- return -EFAULT;
- return 0;
- }
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- typedef struct drm_buf_desc32 {
- int count; /* Number of buffers of this size */
- int size; /* Size in bytes */
- int low_mark; /* Low water mark */
- int high_mark; /* High water mark */
- int flags;
- u32 agp_start; /* Start address in the AGP aperture */
- } drm_buf_desc32_t;
- static int compat_drm_addbufs(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_buf_desc32_t __user *argp = (void __user *)arg;
- drm_buf_desc32_t desc32;
- struct drm_buf_desc desc;
- int err;
- if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
- return -EFAULT;
- desc = (struct drm_buf_desc){
- desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
- desc32.flags, desc32.agp_start
- };
- err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- if (err)
- return err;
- desc32 = (drm_buf_desc32_t){
- desc.count, desc.size, desc.low_mark, desc.high_mark,
- desc.flags, desc.agp_start
- };
- if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
- return -EFAULT;
- return 0;
- }
- static int compat_drm_markbufs(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_buf_desc32_t b32;
- drm_buf_desc32_t __user *argp = (void __user *)arg;
- struct drm_buf_desc buf;
- if (copy_from_user(&b32, argp, sizeof(b32)))
- return -EFAULT;
- buf.size = b32.size;
- buf.low_mark = b32.low_mark;
- buf.high_mark = b32.high_mark;
- return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- typedef struct drm_buf_info32 {
- int count; /**< Entries in list */
- u32 list;
- } drm_buf_info32_t;
- static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
- {
- drm_buf_info32_t *request = data;
- drm_buf_desc32_t __user *to = compat_ptr(request->list);
- drm_buf_desc32_t v = {.count = from->buf_count,
- .size = from->buf_size,
- .low_mark = from->low_mark,
- .high_mark = from->high_mark};
- if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags)))
- return -EFAULT;
- return 0;
- }
- static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
- {
- drm_buf_info32_t *request = data;
- return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
- }
- static int compat_drm_infobufs(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_buf_info32_t req32;
- drm_buf_info32_t __user *argp = (void __user *)arg;
- int err;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- if (req32.count < 0)
- req32.count = 0;
- err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
- if (err)
- return err;
- if (put_user(req32.count, &argp->count))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_buf_pub32 {
- int idx; /**< Index into the master buffer list */
- int total; /**< Buffer size */
- int used; /**< Amount of buffer in use (for DMA) */
- u32 address; /**< Address of buffer */
- } drm_buf_pub32_t;
- typedef struct drm_buf_map32 {
- int count; /**< Length of the buffer list */
- u32 virtual; /**< Mmap'd area in user-virtual */
- u32 list; /**< Buffer information */
- } drm_buf_map32_t;
- static int map_one_buf32(void *data, int idx, unsigned long virtual,
- struct drm_buf *buf)
- {
- drm_buf_map32_t *request = data;
- drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
- drm_buf_pub32_t v;
- v.idx = buf->idx;
- v.total = buf->total;
- v.used = 0;
- v.address = virtual + buf->offset;
- if (copy_to_user(to, &v, sizeof(v)))
- return -EFAULT;
- return 0;
- }
- static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
- {
- drm_buf_map32_t *request = data;
- void __user *v;
- int err = __drm_legacy_mapbufs(dev, data, &request->count,
- &v, map_one_buf32,
- file_priv);
- request->virtual = ptr_to_compat(v);
- return err;
- }
- static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_buf_map32_t __user *argp = (void __user *)arg;
- drm_buf_map32_t req32;
- int err;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- if (req32.count < 0)
- return -EINVAL;
- err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
- if (err)
- return err;
- if (put_user(req32.count, &argp->count)
- || put_user(req32.virtual, &argp->virtual))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_buf_free32 {
- int count;
- u32 list;
- } drm_buf_free32_t;
- static int compat_drm_freebufs(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_buf_free32_t req32;
- struct drm_buf_free request;
- drm_buf_free32_t __user *argp = (void __user *)arg;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- request.count = req32.count;
- request.list = compat_ptr(req32.list);
- return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH);
- }
- typedef struct drm_ctx_priv_map32 {
- unsigned int ctx_id; /**< Context requesting private mapping */
- u32 handle; /**< Handle of map */
- } drm_ctx_priv_map32_t;
- static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_ctx_priv_map32_t req32;
- struct drm_ctx_priv_map request;
- drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- request.ctx_id = req32.ctx_id;
- request.handle = compat_ptr(req32.handle);
- return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- struct drm_ctx_priv_map req;
- drm_ctx_priv_map32_t req32;
- drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
- int err;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- req.ctx_id = req32.ctx_id;
- err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH);
- if (err)
- return err;
- req32.handle = ptr_to_compat((void __user *)req.handle);
- if (copy_to_user(argp, &req32, sizeof(req32)))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_ctx_res32 {
- int count;
- u32 contexts;
- } drm_ctx_res32_t;
- static int compat_drm_resctx(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_ctx_res32_t __user *argp = (void __user *)arg;
- drm_ctx_res32_t res32;
- struct drm_ctx_res res;
- int err;
- if (copy_from_user(&res32, argp, sizeof(res32)))
- return -EFAULT;
- res.count = res32.count;
- res.contexts = compat_ptr(res32.contexts);
- err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH);
- if (err)
- return err;
- res32.count = res.count;
- if (copy_to_user(argp, &res32, sizeof(res32)))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_dma32 {
- int context; /**< Context handle */
- int send_count; /**< Number of buffers to send */
- u32 send_indices; /**< List of handles to buffers */
- u32 send_sizes; /**< Lengths of data to send */
- enum drm_dma_flags flags; /**< Flags */
- int request_count; /**< Number of buffers requested */
- int request_size; /**< Desired size for buffers */
- u32 request_indices; /**< Buffer information */
- u32 request_sizes;
- int granted_count; /**< Number of buffers granted */
- } drm_dma32_t;
- static int compat_drm_dma(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_dma32_t d32;
- drm_dma32_t __user *argp = (void __user *)arg;
- struct drm_dma d;
- int err;
- if (copy_from_user(&d32, argp, sizeof(d32)))
- return -EFAULT;
- d.context = d32.context;
- d.send_count = d32.send_count;
- d.send_indices = compat_ptr(d32.send_indices);
- d.send_sizes = compat_ptr(d32.send_sizes);
- d.flags = d32.flags;
- d.request_count = d32.request_count;
- d.request_indices = compat_ptr(d32.request_indices);
- d.request_sizes = compat_ptr(d32.request_sizes);
- err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH);
- if (err)
- return err;
- if (put_user(d.request_size, &argp->request_size)
- || put_user(d.granted_count, &argp->granted_count))
- return -EFAULT;
- return 0;
- }
- #endif
- #if IS_ENABLED(CONFIG_AGP)
- typedef struct drm_agp_mode32 {
- u32 mode; /**< AGP mode */
- } drm_agp_mode32_t;
- static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_mode32_t __user *argp = (void __user *)arg;
- struct drm_agp_mode mode;
- if (get_user(mode.mode, &argp->mode))
- return -EFAULT;
- return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- typedef struct drm_agp_info32 {
- int agp_version_major;
- int agp_version_minor;
- u32 mode;
- u32 aperture_base; /* physical address */
- u32 aperture_size; /* bytes */
- u32 memory_allowed; /* bytes */
- u32 memory_used;
- /* PCI information */
- unsigned short id_vendor;
- unsigned short id_device;
- } drm_agp_info32_t;
- static int compat_drm_agp_info(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_info32_t __user *argp = (void __user *)arg;
- drm_agp_info32_t i32;
- struct drm_agp_info info;
- int err;
- err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH);
- if (err)
- return err;
- i32.agp_version_major = info.agp_version_major;
- i32.agp_version_minor = info.agp_version_minor;
- i32.mode = info.mode;
- i32.aperture_base = info.aperture_base;
- i32.aperture_size = info.aperture_size;
- i32.memory_allowed = info.memory_allowed;
- i32.memory_used = info.memory_used;
- i32.id_vendor = info.id_vendor;
- i32.id_device = info.id_device;
- if (copy_to_user(argp, &i32, sizeof(i32)))
- return -EFAULT;
- return 0;
- }
- typedef struct drm_agp_buffer32 {
- u32 size; /**< In bytes -- will round to page boundary */
- u32 handle; /**< Used for binding / unbinding */
- u32 type; /**< Type of memory to allocate */
- u32 physical; /**< Physical used by i810 */
- } drm_agp_buffer32_t;
- static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_buffer32_t __user *argp = (void __user *)arg;
- drm_agp_buffer32_t req32;
- struct drm_agp_buffer request;
- int err;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- request.size = req32.size;
- request.type = req32.type;
- err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- if (err)
- return err;
- req32.handle = request.handle;
- req32.physical = request.physical;
- if (copy_to_user(argp, &req32, sizeof(req32))) {
- drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- return -EFAULT;
- }
- return 0;
- }
- static int compat_drm_agp_free(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_buffer32_t __user *argp = (void __user *)arg;
- struct drm_agp_buffer request;
- if (get_user(request.handle, &argp->handle))
- return -EFAULT;
- return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- typedef struct drm_agp_binding32 {
- u32 handle; /**< From drm_agp_buffer */
- u32 offset; /**< In bytes -- will round to page boundary */
- } drm_agp_binding32_t;
- static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_binding32_t __user *argp = (void __user *)arg;
- drm_agp_binding32_t req32;
- struct drm_agp_binding request;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- request.handle = req32.handle;
- request.offset = req32.offset;
- return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_agp_binding32_t __user *argp = (void __user *)arg;
- struct drm_agp_binding request;
- if (get_user(request.handle, &argp->handle))
- return -EFAULT;
- return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- #endif /* CONFIG_AGP */
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- typedef struct drm_scatter_gather32 {
- u32 size; /**< In bytes -- will round to page boundary */
- u32 handle; /**< Used for mapping / unmapping */
- } drm_scatter_gather32_t;
- static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_scatter_gather32_t __user *argp = (void __user *)arg;
- struct drm_scatter_gather request;
- int err;
- if (get_user(request.size, &argp->size))
- return -EFAULT;
- err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- if (err)
- return err;
- /* XXX not sure about the handle conversion here... */
- if (put_user(request.handle >> PAGE_SHIFT, &argp->handle))
- return -EFAULT;
- return 0;
- }
- static int compat_drm_sg_free(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_scatter_gather32_t __user *argp = (void __user *)arg;
- struct drm_scatter_gather request;
- unsigned long x;
- if (get_user(x, &argp->handle))
- return -EFAULT;
- request.handle = x << PAGE_SHIFT;
- return drm_ioctl_kernel(file, drm_legacy_sg_free, &request,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- #endif
- #if defined(CONFIG_X86)
- typedef struct drm_update_draw32 {
- drm_drawable_t handle;
- unsigned int type;
- unsigned int num;
- /* 64-bit version has a 32-bit pad here */
- u64 data; /**< Pointer */
- } __attribute__((packed)) drm_update_draw32_t;
- static int compat_drm_update_draw(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_update_draw32_t update32;
- if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
- return -EFAULT;
- return drm_ioctl_kernel(file, drm_noop, NULL,
- DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
- }
- #endif
- struct drm_wait_vblank_request32 {
- enum drm_vblank_seq_type type;
- unsigned int sequence;
- u32 signal;
- };
- struct drm_wait_vblank_reply32 {
- enum drm_vblank_seq_type type;
- unsigned int sequence;
- s32 tval_sec;
- s32 tval_usec;
- };
- typedef union drm_wait_vblank32 {
- struct drm_wait_vblank_request32 request;
- struct drm_wait_vblank_reply32 reply;
- } drm_wait_vblank32_t;
- static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- drm_wait_vblank32_t __user *argp = (void __user *)arg;
- drm_wait_vblank32_t req32;
- union drm_wait_vblank req;
- int err;
- if (copy_from_user(&req32, argp, sizeof(req32)))
- return -EFAULT;
- memset(&req, 0, sizeof(req));
- req.request.type = req32.request.type;
- req.request.sequence = req32.request.sequence;
- req.request.signal = req32.request.signal;
- err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED);
- req32.reply.type = req.reply.type;
- req32.reply.sequence = req.reply.sequence;
- req32.reply.tval_sec = req.reply.tval_sec;
- req32.reply.tval_usec = req.reply.tval_usec;
- if (copy_to_user(argp, &req32, sizeof(req32)))
- return -EFAULT;
- return err;
- }
- #if defined(CONFIG_X86)
- typedef struct drm_mode_fb_cmd232 {
- u32 fb_id;
- u32 width;
- u32 height;
- u32 pixel_format;
- u32 flags;
- u32 handles[4];
- u32 pitches[4];
- u32 offsets[4];
- u64 modifier[4];
- } __attribute__((packed)) drm_mode_fb_cmd232_t;
- static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
- unsigned long arg)
- {
- struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
- struct drm_mode_fb_cmd2 req64;
- int err;
- memset(&req64, 0, sizeof(req64));
- if (copy_from_user(&req64, argp,
- offsetof(drm_mode_fb_cmd232_t, modifier)))
- return -EFAULT;
- if (copy_from_user(&req64.modifier, &argp->modifier,
- sizeof(req64.modifier)))
- return -EFAULT;
- err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0);
- if (err)
- return err;
- if (put_user(req64.fb_id, &argp->fb_id))
- return -EFAULT;
- return 0;
- }
- #endif
- static struct {
- drm_ioctl_compat_t *fn;
- char *name;
- } drm_compat_ioctls[] = {
- #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
- DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
- DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
- #endif
- DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
- DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats),
- DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap),
- DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
- DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
- DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
- DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
- DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
- DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
- DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),
- DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx),
- DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx),
- DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma),
- #endif
- #if IS_ENABLED(CONFIG_AGP)
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable),
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info),
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc),
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free),
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind),
- DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind),
- #endif
- #if IS_ENABLED(CONFIG_DRM_LEGACY)
- DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
- DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
- #endif
- #if defined(CONFIG_X86) || defined(CONFIG_IA64)
- DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
- #endif
- DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
- #if defined(CONFIG_X86) || defined(CONFIG_IA64)
- DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
- #endif
- };
- /**
- * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
- * @filp: file this ioctl is called on
- * @cmd: ioctl cmd number
- * @arg: user argument
- *
- * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
- * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
- * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
- * botched IOCTL itself, it must handle those by wrapping this function.
- *
- * Returns:
- * Zero on success, negative error code on failure.
- */
- long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
- {
- unsigned int nr = DRM_IOCTL_NR(cmd);
- struct drm_file *file_priv = filp->private_data;
- drm_ioctl_compat_t *fn;
- int ret;
- /* Assume that ioctls without an explicit compat routine will just
- * work. This may not always be a good assumption, but it's better
- * than always failing.
- */
- if (nr >= ARRAY_SIZE(drm_compat_ioctls))
- return drm_ioctl(filp, cmd, arg);
- fn = drm_compat_ioctls[nr].fn;
- if (!fn)
- return drm_ioctl(filp, cmd, arg);
- DRM_DEBUG("comm=\"%s\", pid=%d, dev=0x%lx, auth=%d, %s\n",
- current->comm, task_pid_nr(current),
- (long)old_encode_dev(file_priv->minor->kdev->devt),
- file_priv->authenticated,
- drm_compat_ioctls[nr].name);
- ret = (*fn)(filp, cmd, arg);
- if (ret)
- DRM_DEBUG("ret = %d\n", ret);
- return ret;
- }
- EXPORT_SYMBOL(drm_compat_ioctl);
|