/** * \file drm_ioc32.c * * 32-bit ioctl compatibility routines for the DRM. * * \author Paul Mackerras * * 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 #include #include "drmP.h" #include "drm_core.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_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_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; drm_version_t __user *version; int err; if (copy_from_user(&v32, (void __user *) arg, sizeof(v32))) return -EFAULT; version = compat_alloc_user_space(sizeof(*version)); if (!access_ok(VERIFY_WRITE, version, sizeof(*version))) return -EFAULT; if (__put_user(v32.name_len, &version->name_len) || __put_user((void __user *)(unsigned long)v32.name, &version->name) || __put_user(v32.date_len, &version->date_len) || __put_user((void __user *)(unsigned long)v32.date, &version->date) || __put_user(v32.desc_len, &version->desc_len) || __put_user((void __user *)(unsigned long)v32.desc, &version->desc)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_VERSION, (unsigned long) version); if (err) return err; if (__get_user(v32.version_major, &version->version_major) || __get_user(v32.version_minor, &version->version_minor) || __get_user(v32.version_patchlevel, &version->version_patchlevel) || __get_user(v32.name_len, &version->name_len) || __get_user(v32.date_len, &version->date_len) || __get_user(v32.desc_len, &version->desc_len)) return -EFAULT; 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; drm_unique_t __user *u; int err; if (copy_from_user(&uq32, (void __user *) arg, sizeof(uq32))) return -EFAULT; u = compat_alloc_user_space(sizeof(*u)); if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) return -EFAULT; if (__put_user(uq32.unique_len, &u->unique_len) || __put_user((void __user *)(unsigned long) uq32.unique, &u->unique)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_GET_UNIQUE, (unsigned long) u); if (err) return err; if (__get_user(uq32.unique_len, &u->unique_len)) return -EFAULT; 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) { drm_unique32_t uq32; drm_unique_t __user *u; if (copy_from_user(&uq32, (void __user *) arg, sizeof(uq32))) return -EFAULT; u = compat_alloc_user_space(sizeof(*u)); if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) return -EFAULT; if (__put_user(uq32.unique_len, &u->unique_len) || __put_user((void __user *)(unsigned long) uq32.unique, &u->unique)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_SET_UNIQUE, (unsigned long) u); } typedef struct drm_map32 { u32 offset; /**< Requested physical address (0 for SAREA)*/ u32 size; /**< Requested physical size (bytes) */ drm_map_type_t type; /**< Type of memory to map */ drm_map_flags_t 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; drm_map_t __user *map; int idx, err; void *handle; if (get_user(idx, &argp->offset)) return -EFAULT; map = compat_alloc_user_space(sizeof(*map)); if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) return -EFAULT; if (__put_user(idx, &map->offset)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_GET_MAP, (unsigned long) map); if (err) return err; if (__get_user(m32.offset, &map->offset) || __get_user(m32.size, &map->size) || __get_user(m32.type, &map->type) || __get_user(m32.flags, &map->flags) || __get_user(handle, &map->handle) || __get_user(m32.mtrr, &map->mtrr)) return -EFAULT; m32.handle = (unsigned long) handle; 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; drm_map_t __user *map; int err; void *handle; if (copy_from_user(&m32, argp, sizeof(m32))) return -EFAULT; map = compat_alloc_user_space(sizeof(*map)); if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) return -EFAULT; if (__put_user(m32.offset, &map->offset) || __put_user(m32.size, &map->size) || __put_user(m32.type, &map->type) || __put_user(m32.flags, &map->flags)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_ADD_MAP, (unsigned long) map); if (err) return err; if (__get_user(m32.offset, &map->offset) || __get_user(m32.mtrr, &map->mtrr) || __get_user(handle, &map->handle)) return -EFAULT; m32.handle = (unsigned long) handle; if (m32.handle != (unsigned long) handle && printk_ratelimit()) printk(KERN_ERR "compat_drm_addmap truncated handle" " %p for type %d offset %x\n", 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; drm_map_t __user *map; u32 handle; if (get_user(handle, &argp->handle)) return -EFAULT; map = compat_alloc_user_space(sizeof(*map)); if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) return -EFAULT; if (__put_user((void *)(unsigned long) handle, &map->handle)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_RM_MAP, (unsigned long) map); } 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; drm_client_t __user *client; int idx, err; if (get_user(idx, &argp->idx)) return -EFAULT; client = compat_alloc_user_space(sizeof(*client)); if (!access_ok(VERIFY_WRITE, client, sizeof(*client))) return -EFAULT; if (__put_user(idx, &client->idx)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_GET_CLIENT, (unsigned long) client); if (err) return err; if (__get_user(c32.auth, &client->auth) || __get_user(c32.pid, &client->pid) || __get_user(c32.uid, &client->uid) || __get_user(c32.magic, &client->magic) || __get_user(c32.iocs, &client->iocs)) return -EFAULT; if (copy_to_user(argp, &c32, sizeof(c32))) return -EFAULT; return 0; } typedef struct drm_stats32 { u32 count; struct { u32 value; drm_stat_type_t type; } data[15]; } drm_stats32_t; static int compat_drm_getstats(struct file *file, unsigned int cmd, unsigned long arg) { drm_stats32_t s32; drm_stats32_t __user *argp = (void __user *)arg; drm_stats_t __user *stats; int i, err; stats = compat_alloc_user_space(sizeof(*stats)); if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats))) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_GET_STATS, (unsigned long) stats); if (err) return err; if (__get_user(s32.count, &stats->count)) return -EFAULT; for (i = 0; i < 15; ++i) if (__get_user(s32.data[i].value, &stats->data[i].value) || __get_user(s32.data[i].type, &stats->data[i].type)) return -EFAULT; if (copy_to_user(argp, &s32, sizeof(s32))) return -EFAULT; return 0; } 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_desc_t __user *buf; int err; unsigned long agp_start; buf = compat_alloc_user_space(sizeof(*buf)); if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)) || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))) return -EFAULT; if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start)) || __get_user(agp_start, &argp->agp_start) || __put_user(agp_start, &buf->agp_start)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_ADD_BUFS, (unsigned long) buf); if (err) return err; if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start)) || __get_user(agp_start, &buf->agp_start) || __put_user(agp_start, &argp->agp_start)) 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; drm_buf_desc_t __user *buf; if (copy_from_user(&b32, argp, sizeof(b32))) return -EFAULT; buf = compat_alloc_user_space(sizeof(*buf)); if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))) return -EFAULT; if (__put_user(b32.size, &buf->size) || __put_user(b32.low_mark, &buf->low_mark) || __put_user(b32.high_mark, &buf->high_mark)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_MARK_BUFS, (unsigned long) buf); } typedef struct drm_buf_info32 { int count; /**< Entries in list */ u32 list; } drm_buf_info32_t; 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; drm_buf_desc32_t __user *to; drm_buf_info_t __user *request; drm_buf_desc_t __user *list; size_t nbytes; int i, err; int count, actual; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; count = req32.count; to = (drm_buf_desc32_t __user *)(unsigned long) req32.list; if (count < 0) count = 0; if (count > 0 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t))) return -EFAULT; nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t); request = compat_alloc_user_space(nbytes); if (!access_ok(VERIFY_WRITE, request, nbytes)) return -EFAULT; list = (drm_buf_desc_t *) (request + 1); if (__put_user(count, &request->count) || __put_user(list, &request->list)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_INFO_BUFS, (unsigned long) request); if (err) return err; if (__get_user(actual, &request->count)) return -EFAULT; if (count >= actual) for (i = 0; i < actual; ++i) if (__copy_in_user(&to[i], &list[i], offsetof(drm_buf_desc_t, flags))) return -EFAULT; if (__put_user(actual, &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 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; drm_buf_pub32_t __user *list32; drm_buf_map_t __user *request; drm_buf_pub_t __user *list; int i, err; int count, actual; size_t nbytes; void __user *addr; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; count = req32.count; list32 = (void __user *)(unsigned long)req32.list; if (count < 0) return -EINVAL; nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t); request = compat_alloc_user_space(nbytes); if (!access_ok(VERIFY_WRITE, request, nbytes)) return -EFAULT; list = (drm_buf_pub_t *) (request + 1); if (__put_user(count, &request->count) || __put_user(list, &request->list)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_MAP_BUFS, (unsigned long) request); if (err) return err; if (__get_user(actual, &request->count)) return -EFAULT; if (count >= actual) for (i = 0; i < actual; ++i) if (__copy_in_user(&list32[i], &list[i], offsetof(drm_buf_pub_t, address)) || __get_user(addr, &list[i].address) || __put_user((unsigned long) addr, &list32[i].address)) return -EFAULT; if (__put_user(actual, &argp->count) || __get_user(addr, &request->virtual) || __put_user((unsigned long) addr, &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; drm_buf_free_t __user *request; drm_buf_free32_t __user *argp = (void __user *)arg; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) return -EFAULT; if (__put_user(req32.count, &request->count) || __put_user((int __user *)(unsigned long) req32.list, &request->list)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_FREE_BUFS, (unsigned long) request); } 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; drm_ctx_priv_map_t __user *request; drm_ctx_priv_map32_t __user *argp = (void __user *)arg; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) return -EFAULT; if (__put_user(req32.ctx_id, &request->ctx_id) || __put_user((void *)(unsigned long) req32.handle, &request->handle)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long) request); } static int compat_drm_getsareactx(struct file *file, unsigned int cmd, unsigned long arg) { drm_ctx_priv_map_t __user *request; drm_ctx_priv_map32_t __user *argp = (void __user *)arg; int err; unsigned int ctx_id; void *handle; if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp)) || __get_user(ctx_id, &argp->ctx_id)) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) return -EFAULT; if (__put_user(ctx_id, &request->ctx_id)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long) request); if (err) return err; if (__get_user(handle, &request->handle) || __put_user((unsigned long) handle, &argp->handle)) 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; drm_ctx_res_t __user *res; int err; if (copy_from_user(&res32, argp, sizeof(res32))) return -EFAULT; res = compat_alloc_user_space(sizeof(*res)); if (!access_ok(VERIFY_WRITE, res, sizeof(*res))) return -EFAULT; if (__put_user(res32.count, &res->count) || __put_user((drm_ctx_t __user *)(unsigned long) res32.contexts, &res->contexts)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_RES_CTX, (unsigned long) res); if (err) return err; if (__get_user(res32.count, &res->count) || __put_user(res32.count, &argp->count)) 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 */ drm_dma_flags_t 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; drm_dma_t __user *d; int err; if (copy_from_user(&d32, argp, sizeof(d32))) return -EFAULT; d = compat_alloc_user_space(sizeof(*d)); if (!access_ok(VERIFY_WRITE, d, sizeof(*d))) return -EFAULT; if (__put_user(d32.context, &d->context) || __put_user(d32.send_count, &d->send_count) || __put_user((int __user *)(unsigned long) d32.send_indices, &d->send_indices) || __put_user((int __user *)(unsigned long) d32.send_sizes, &d->send_sizes) || __put_user(d32.flags, &d->flags) || __put_user(d32.request_count, &d->request_count) || __put_user((int __user *)(unsigned long) d32.request_indices, &d->request_indices) || __put_user((int __user *)(unsigned long) d32.request_sizes, &d->request_sizes)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_DMA, (unsigned long) d); if (err) return err; if (__get_user(d32.request_size, &d->request_size) || __get_user(d32.granted_count, &d->granted_count) || __put_user(d32.request_size, &argp->request_size) || __put_user(d32.granted_count, &argp->granted_count)) return -EFAULT; return 0; } #if __OS_HAS_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; drm_agp_mode32_t m32; drm_agp_mode_t __user *mode; if (get_user(m32.mode, &argp->mode)) return -EFAULT; mode = compat_alloc_user_space(sizeof(*mode)); if (put_user(m32.mode, &mode->mode)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_ENABLE, (unsigned long) mode); } 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; drm_agp_info_t __user *info; int err; info = compat_alloc_user_space(sizeof(*info)); if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_INFO, (unsigned long) info); if (err) return err; if (__get_user(i32.agp_version_major, &info->agp_version_major) || __get_user(i32.agp_version_minor, &info->agp_version_minor) || __get_user(i32.mode, &info->mode) || __get_user(i32.aperture_base, &info->aperture_base) || __get_user(i32.aperture_size, &info->aperture_size) || __get_user(i32.memory_allowed, &info->memory_allowed) || __get_user(i32.memory_used, &info->memory_used) || __get_user(i32.id_vendor, &info->id_vendor) || __get_user(i32.id_device, &info->id_device)) return -EFAULT; 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; drm_agp_buffer_t __user *request; int err; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || __put_user(req32.size, &request->size) || __put_user(req32.type, &request->type)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_ALLOC, (unsigned long) request); if (err) return err; if (__get_user(req32.handle, &request->handle) || __get_user(req32.physical, &request->physical) || copy_to_user(argp, &req32, sizeof(req32))) { drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_FREE, (unsigned long) request); 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; drm_agp_buffer_t __user *request; u32 handle; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || get_user(handle, &argp->handle) || __put_user(handle, &request->handle)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_FREE, (unsigned long) request); } 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; drm_agp_binding_t __user *request; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || __put_user(req32.handle, &request->handle) || __put_user(req32.offset, &request->offset)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_BIND, (unsigned long) request); } static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, unsigned long arg) { drm_agp_binding32_t __user *argp = (void __user *)arg; drm_agp_binding_t __user *request; u32 handle; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || get_user(handle, &argp->handle) || __put_user(handle, &request->handle)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_AGP_UNBIND, (unsigned long) request); } #endif /* __OS_HAS_AGP */ 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; drm_scatter_gather_t __user *request; int err; unsigned long x; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) || __get_user(x, &argp->size) || __put_user(x, &request->size)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_SG_ALLOC, (unsigned long) request); if (err) return err; /* XXX not sure about the handle conversion here... */ if (__get_user(x, &request->handle) || __put_user(x >> 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; drm_scatter_gather_t __user *request; unsigned long x; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) || __get_user(x, &argp->handle) || __put_user(x << PAGE_SHIFT, &request->handle)) return -EFAULT; return drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_SG_FREE, (unsigned long) request); } struct drm_wait_vblank_request32 { drm_vblank_seq_type_t type; unsigned int sequence; u32 signal; }; struct drm_wait_vblank_reply32 { drm_vblank_seq_type_t 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; drm_wait_vblank_t __user *request; int err; if (copy_from_user(&req32, argp, sizeof(req32))) return -EFAULT; request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || __put_user(req32.request.type, &request->request.type) || __put_user(req32.request.sequence, &request->request.sequence) || __put_user(req32.request.signal, &request->request.signal)) return -EFAULT; err = drm_ioctl(file->f_dentry->d_inode, file, DRM_IOCTL_WAIT_VBLANK, (unsigned long) request); if (err) return err; if (__get_user(req32.reply.type, &request->reply.type) || __get_user(req32.reply.sequence, &request->reply.sequence) || __get_user(req32.reply.tval_sec, &request->reply.tval_sec) || __get_user(req32.reply.tval_usec, &request->reply.tval_usec)) return -EFAULT; if (copy_to_user(argp, &req32, sizeof(req32))) return -EFAULT; return 0; } drm_ioctl_compat_t *drm_compat_ioctls[] = { [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version, [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap, [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient, [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats, [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique, [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap, [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs, [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs, [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs, [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs, [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs, [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap, [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx, [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx, [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx, [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma, #if __OS_HAS_AGP [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable, [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info, [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc, [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free, [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind, [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind, #endif [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, }; /** * Called whenever a 32-bit process running under a 64-bit kernel * performs an ioctl on /dev/drm. * * \param filp file pointer. * \param cmd command. * \param arg user argument. * \return zero on success or negative number on failure. */ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { unsigned int nr = DRM_IOCTL_NR(cmd); drm_ioctl_compat_t *fn; int ret; if (nr >= DRM_ARRAY_SIZE(drm_compat_ioctls)) return -ENOTTY; fn = drm_compat_ioctls[nr]; lock_kernel(); /* XXX for now */ if (fn != NULL) ret = (*fn)(filp, cmd, arg); else ret = drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg); unlock_kernel(); return ret; } EXPORT_SYMBOL(drm_compat_ioctl); class="hl opt">= kern->current_memory << PAGE_SHIFT; info->id_vendor = kern->device->vendor; info->id_device = kern->device->device; return 0; } EXPORT_SYMBOL(drm_agp_info); int drm_agp_info_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = priv->head->dev; struct drm_agp_info info; int err; err = drm_agp_info(dev, &info); if (err) return err; if (copy_to_user((struct drm_agp_info __user *) arg, &info, sizeof(info))) return -EFAULT; return 0; } /** * Acquire the AGP device. * * \param dev DRM device that is to acquire AGP. * \return zero on success or a negative number on failure. * * Verifies the AGP device hasn't been acquired before and calls * \c agp_backend_acquire. */ int drm_agp_acquire(struct drm_device * dev) { #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) int retcode; #endif if (!dev->agp) return -ENODEV; if (dev->agp->acquired) return -EBUSY; #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) if ((retcode = agp_backend_acquire())) return retcode; #else if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev))) return -ENODEV; #endif dev->agp->acquired = 1; return 0; } EXPORT_SYMBOL(drm_agp_acquire); /** * Acquire the AGP device (ioctl). * * \param inode device inode. * \param file_priv DRM file private. * \param cmd command. * \param arg user argument. * \return zero on success or a negative number on failure. * * Verifies the AGP device hasn't been acquired before and calls * \c agp_backend_acquire. */ int drm_agp_acquire_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { return drm_agp_acquire( (struct drm_device *) file_priv->head->dev ); } /** * Release the AGP device. * * \param dev DRM device that is to release AGP. * \return zero on success or a negative number on failure. * * Verifies the AGP device has been acquired and calls \c agp_backend_release. */ int drm_agp_release(struct drm_device *dev) { if (!dev->agp || !dev->agp->acquired) return -EINVAL; #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) agp_backend_release(); #else agp_backend_release(dev->agp->bridge); #endif dev->agp->acquired = 0; return 0; } EXPORT_SYMBOL(drm_agp_release); int drm_agp_release_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; return drm_agp_release(dev); } /** * Enable the AGP bus. * * \param dev DRM device that has previously acquired AGP. * \param mode Requested AGP mode. * \return zero on success or a negative number on failure. * * Verifies the AGP device has been acquired but not enabled, and calls * \c agp_enable. */ int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode) { if (!dev->agp || !dev->agp->acquired) return -EINVAL; dev->agp->mode = mode.mode; #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) agp_enable(mode.mode); #else agp_enable(dev->agp->bridge, mode.mode); #endif dev->agp->base = dev->agp->agp_info.aper_base; dev->agp->enabled = 1; return 0; } EXPORT_SYMBOL(drm_agp_enable); int drm_agp_enable_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; struct drm_agp_mode mode; if (copy_from_user(&mode, (struct drm_agp_mode __user *) arg, sizeof(mode))) return -EFAULT; return drm_agp_enable(dev, mode); } /** * Allocate AGP memory. * * \param inode device inode. * \param file_priv file private pointer. * \param cmd command. * \param arg pointer to a drm_agp_buffer structure. * \return zero on success or a negative number on failure. * * Verifies the AGP device is present and has been acquired, allocates the * memory via alloc_agp() and creates a drm_agp_mem entry for it. */ int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request) { struct drm_agp_mem *entry; DRM_AGP_MEM *memory; unsigned long pages; u32 type; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS))) return -ENOMEM; memset(entry, 0, sizeof(*entry)); pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE; type = (u32) request->type; if (!(memory = drm_alloc_agp(dev, pages, type))) { drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return -ENOMEM; } entry->handle = (unsigned long)memory->key + 1; entry->memory = memory; entry->bound = 0; entry->pages = pages; list_add(&entry->head, &dev->agp->memory); request->handle = entry->handle; request->physical = memory->physical; return 0; } EXPORT_SYMBOL(drm_agp_alloc); int drm_agp_alloc_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; struct drm_agp_buffer request; struct drm_agp_buffer __user *argp = (void __user *)arg; int err; if (copy_from_user(&request, argp, sizeof(request))) return -EFAULT; err = drm_agp_alloc(dev, &request); if (err) return err; if (copy_to_user(argp, &request, sizeof(request))) { struct drm_agp_mem *entry; list_for_each_entry(entry, &dev->agp->memory, head) { if (entry->handle == request.handle) break; } list_del(&entry->head); drm_free_agp(entry->memory, entry->pages); drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return -EFAULT; } return 0; } /** * Search for the AGP memory entry associated with a handle. * * \param dev DRM device structure. * \param handle AGP memory handle. * \return pointer to the drm_agp_mem structure associated with \p handle. * * Walks through drm_agp_head::memory until finding a matching handle. */ static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev, unsigned long handle) { struct drm_agp_mem *entry; list_for_each_entry(entry, &dev->agp->memory, head) { if (entry->handle == handle) return entry; } return NULL; } /** * Unbind AGP memory from the GATT (ioctl). * * \param inode device inode. * \param file_priv DRM file private. * \param cmd command. * \param arg pointer to a drm_agp_binding structure. * \return zero on success or a negative number on failure. * * Verifies the AGP device is present and acquired, looks-up the AGP memory * entry and passes it to the unbind_agp() function. */ int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request) { struct drm_agp_mem *entry; int ret; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (!entry->bound) return -EINVAL; ret = drm_unbind_agp(entry->memory); if (ret == 0) entry->bound = 0; return ret; } EXPORT_SYMBOL(drm_agp_unbind); int drm_agp_unbind_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; struct drm_agp_binding request; if (copy_from_user (&request, (struct drm_agp_binding __user *) arg, sizeof(request))) return -EFAULT; return drm_agp_unbind(dev, &request); } /** * Bind AGP memory into the GATT (ioctl) * * \param inode device inode. * \param file_priv DRM file private. * \param cmd command. * \param arg pointer to a drm_agp_binding structure. * \return zero on success or a negative number on failure. * * Verifies the AGP device is present and has been acquired and that no memory * is currently bound into the GATT. Looks-up the AGP memory entry and passes * it to bind_agp() function. */ int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request) { struct drm_agp_mem *entry; int retcode; int page; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (entry->bound) return -EINVAL; page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE; if ((retcode = drm_bind_agp(entry->memory, page))) return retcode; entry->bound = dev->agp->base + (page << PAGE_SHIFT); DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", dev->agp->base, entry->bound); return 0; } EXPORT_SYMBOL(drm_agp_bind); int drm_agp_bind_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; struct drm_agp_binding request; if (copy_from_user (&request, (struct drm_agp_binding __user *) arg, sizeof(request))) return -EFAULT; return drm_agp_bind(dev, &request); } /** * Free AGP memory (ioctl). * * \param inode device inode. * \param file_priv DRM file private. * \param cmd command. * \param arg pointer to a drm_agp_buffer structure. * \return zero on success or a negative number on failure. * * Verifies the AGP device is present and has been acquired and looks up the * AGP memory entry. If the memory it's currently bound, unbind it via * unbind_agp(). Frees it via free_agp() as well as the entry itself * and unlinks from the doubly linked list it's inserted in. */ int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request) { struct drm_agp_mem *entry; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (entry->bound) drm_unbind_agp(entry->memory); list_del(&entry->head); drm_free_agp(entry->memory, entry->pages); drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return 0; } EXPORT_SYMBOL(drm_agp_free); int drm_agp_free_ioctl(struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long arg) { struct drm_device *dev = file_priv->head->dev; struct drm_agp_buffer request; if (copy_from_user (&request, (struct drm_agp_buffer __user *) arg, sizeof(request))) return -EFAULT; return drm_agp_free(dev, &request); } /** * Initialize the AGP resources. * * \return pointer to a drm_agp_head structure. * * Gets the drm_agp_t structure which is made available by the agpgart module * via the inter_module_* functions. Creates and initializes a drm_agp_head * structure. */ struct drm_agp_head *drm_agp_init(struct drm_device *dev) { struct drm_agp_head *head = NULL; if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS))) return NULL; memset((void *)head, 0, sizeof(*head)); #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) agp_copy_info(&head->agp_info); #else head->bridge = agp_find_bridge(dev->pdev); if (!head->bridge) { if (!(head->bridge = agp_backend_acquire(dev->pdev))) { drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); return NULL; } agp_copy_info(head->bridge, &head->agp_info); agp_backend_release(head->bridge); } else { agp_copy_info(head->bridge, &head->agp_info); } #endif if (head->agp_info.chipset == NOT_SUPPORTED) { drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); return NULL; } INIT_LIST_HEAD(&head->memory); head->cant_use_aperture = head->agp_info.cant_use_aperture; head->page_mask = head->agp_info.page_mask; return head; } /** Calls agp_allocate_memory() */ #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) DRM_AGP_MEM *drm_agp_allocate_memory(size_t pages, u32 type) { return agp_allocate_memory(pages, type); } #else DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type) { return agp_allocate_memory(bridge, pages, type); } #endif /** Calls agp_free_memory() */ int drm_agp_free_memory(DRM_AGP_MEM * handle) { if (!handle) return 0; agp_free_memory(handle); return 1; } /** Calls agp_bind_memory() */ int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start) { if (!handle) return -EINVAL; return agp_bind_memory(handle, start); } EXPORT_SYMBOL(drm_agp_bind_memory); /** Calls agp_unbind_memory() */ int drm_agp_unbind_memory(DRM_AGP_MEM * handle) { if (!handle) return -EINVAL; return agp_unbind_memory(handle); } /* * AGP ttm backend interface. */ #ifndef AGP_USER_TYPES #define AGP_USER_TYPES (1 << 16) #define AGP_USER_MEMORY (AGP_USER_TYPES) #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) #endif #define AGP_REQUIRED_MAJOR 0 #define AGP_REQUIRED_MINOR 102 static int drm_agp_needs_unbind_cache_adjust(struct drm_ttm_backend *backend) { return ((backend->flags & DRM_BE_FLAG_BOUND_CACHED) ? 0 : 1); } static int drm_agp_populate(struct drm_ttm_backend *backend, unsigned long num_pages, struct page **pages) { struct drm_agp_ttm_backend *agp_be = container_of(backend, struct drm_agp_ttm_backend, backend); struct page **cur_page, **last_page = pages + num_pages; DRM_AGP_MEM *mem; if (drm_alloc_memctl(num_pages * sizeof(void *))) return -1; DRM_DEBUG("drm_agp_populate_ttm\n"); #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,11) mem = drm_agp_allocate_memory(num_pages, AGP_USER_MEMORY); #else mem = drm_agp_allocate_memory(agp_be->bridge, num_pages, AGP_USER_MEMORY); #endif if (!mem) { drm_free_memctl(num_pages *sizeof(void *)); return -1; } DRM_DEBUG("Current page count is %ld\n", (long) mem->page_count); mem->page_count = 0; for (cur_page = pages; cur_page < last_page; ++cur_page) { mem->memory[mem->page_count++] = phys_to_gart(page_to_phys(*cur_page)); } agp_be->mem = mem; return 0; } static int drm_agp_bind_ttm(struct drm_ttm_backend *backend, unsigned long offset, int cached) { struct drm_agp_ttm_backend *agp_be = container_of(backend, struct drm_agp_ttm_backend, backend); DRM_AGP_MEM *mem = agp_be->mem; int ret; DRM_DEBUG("drm_agp_bind_ttm\n"); mem->is_flushed = TRUE; mem->type = (cached) ? AGP_USER_CACHED_MEMORY : AGP_USER_MEMORY; ret = drm_agp_bind_memory(mem, offset); if (ret) { DRM_ERROR("AGP Bind memory failed\n"); } DRM_FLAG_MASKED(backend->flags, (cached) ? DRM_BE_FLAG_BOUND_CACHED : 0, DRM_BE_FLAG_BOUND_CACHED); return ret; } static int drm_agp_unbind_ttm(struct drm_ttm_backend *backend) { struct drm_agp_ttm_backend *agp_be = container_of(backend, struct drm_agp_ttm_backend, backend); DRM_DEBUG("drm_agp_unbind_ttm\n"); if (agp_be->mem->is_bound) return drm_agp_unbind_memory(agp_be->mem); else return 0; } static void drm_agp_clear_ttm(struct drm_ttm_backend *backend) { struct drm_agp_ttm_backend *agp_be = container_of(backend, struct drm_agp_ttm_backend, backend); DRM_AGP_MEM *mem = agp_be->mem; DRM_DEBUG("drm_agp_clear_ttm\n"); if (mem) { unsigned long num_pages = mem->page_count; backend->func->unbind(backend); agp_free_memory(mem); drm_free_memctl(num_pages *sizeof(void *)); } agp_be->mem = NULL; } static void drm_agp_destroy_ttm(struct drm_ttm_backend *backend) { struct drm_agp_ttm_backend *agp_be; if (backend) { DRM_DEBUG("drm_agp_destroy_ttm\n"); agp_be = container_of(backend, struct drm_agp_ttm_backend, backend); if (agp_be) { if (agp_be->mem) { backend->func->clear(backend); } drm_ctl_free(agp_be, sizeof(*agp_be), DRM_MEM_TTM); } } } static struct drm_ttm_backend_func agp_ttm_backend = { .needs_ub_cache_adjust = drm_agp_needs_unbind_cache_adjust, .populate = drm_agp_populate, .clear = drm_agp_clear_ttm, .bind = drm_agp_bind_ttm, .unbind = drm_agp_unbind_ttm, .destroy = drm_agp_destroy_ttm, }; struct drm_ttm_backend *drm_agp_init_ttm(struct drm_device *dev) { struct drm_agp_ttm_backend *agp_be; struct agp_kern_info *info; if (!dev->agp) { DRM_ERROR("AGP is not initialized.\n"); return NULL; } info = &dev->agp->agp_info; if (info->version.major != AGP_REQUIRED_MAJOR || info->version.minor < AGP_REQUIRED_MINOR) { DRM_ERROR("Wrong agpgart version %d.%d\n" "\tYou need at least version %d.%d.\n", info->version.major, info->version.minor, AGP_REQUIRED_MAJOR, AGP_REQUIRED_MINOR); return NULL; } agp_be = drm_ctl_calloc(1, sizeof(*agp_be), DRM_MEM_TTM); if (!agp_be) return NULL; agp_be->mem = NULL; agp_be->bridge = dev->agp->bridge; agp_be->populated = FALSE; agp_be->backend.func = &agp_ttm_backend; agp_be->backend.mem_type = DRM_BO_MEM_TT; return &agp_be->backend; } EXPORT_SYMBOL(drm_agp_init_ttm); #endif /* __OS_HAS_AGP */
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-10 17:55:16 +0000