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Merge tag 'topic/drm-misc-2015-07-23' of git://anongit.freedesktop.org/drm-intel...
[cascardo/linux.git] / drivers / gpu / drm / drm_ioc32.c
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index aa8bbb4..ddfa601 100644 (file)
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -70,6 +70,8 @@
 
 #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 */
@@ -93,7 +95,7 @@ static int compat_drm_version(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        version = compat_alloc_user_space(sizeof(*version));
-       if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
+       if (!version)
                return -EFAULT;
        if (__put_user(v32.name_len, &version->name_len)
            || __put_user((void __user *)(unsigned long)v32.name,
@@ -140,7 +142,7 @@ static int compat_drm_getunique(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        u = compat_alloc_user_space(sizeof(*u));
-       if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
+       if (!u)
                return -EFAULT;
        if (__put_user(uq32.unique_len, &u->unique_len)
            || __put_user((void __user *)(unsigned long)uq32.unique,
@@ -168,7 +170,7 @@ static int compat_drm_setunique(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        u = compat_alloc_user_space(sizeof(*u));
-       if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
+       if (!u)
                return -EFAULT;
        if (__put_user(uq32.unique_len, &u->unique_len)
            || __put_user((void __user *)(unsigned long)uq32.unique,
@@ -200,7 +202,7 @@ static int compat_drm_getmap(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        map = compat_alloc_user_space(sizeof(*map));
-       if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+       if (!map)
                return -EFAULT;
        if (__put_user(idx, &map->offset))
                return -EFAULT;
@@ -237,7 +239,7 @@ static int compat_drm_addmap(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        map = compat_alloc_user_space(sizeof(*map));
-       if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+       if (!map)
                return -EFAULT;
        if (__put_user(m32.offset, &map->offset)
            || __put_user(m32.size, &map->size)
@@ -277,7 +279,7 @@ static int compat_drm_rmmap(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        map = compat_alloc_user_space(sizeof(*map));
-       if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
+       if (!map)
                return -EFAULT;
        if (__put_user((void *)(unsigned long)handle, &map->handle))
                return -EFAULT;
@@ -306,7 +308,7 @@ static int compat_drm_getclient(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        client = compat_alloc_user_space(sizeof(*client));
-       if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
+       if (!client)
                return -EFAULT;
        if (__put_user(idx, &client->idx))
                return -EFAULT;
@@ -345,7 +347,7 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd,
        int i, err;
 
        stats = compat_alloc_user_space(sizeof(*stats));
-       if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
+       if (!stats)
                return -EFAULT;
 
        err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
@@ -382,8 +384,7 @@ static int compat_drm_addbufs(struct file *file, unsigned int cmd,
        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)))
+       if (!buf || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
                return -EFAULT;
 
        if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
@@ -414,7 +415,7 @@ static int compat_drm_markbufs(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        buf = compat_alloc_user_space(sizeof(*buf));
-       if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
+       if (!buf)
                return -EFAULT;
 
        if (__put_user(b32.size, &buf->size)
@@ -455,7 +456,7 @@ static int compat_drm_infobufs(struct file *file, unsigned int cmd,
 
        nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
        request = compat_alloc_user_space(nbytes);
-       if (!access_ok(VERIFY_WRITE, request, nbytes))
+       if (!request)
                return -EFAULT;
        list = (struct drm_buf_desc *) (request + 1);
 
@@ -516,7 +517,7 @@ static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
                return -EINVAL;
        nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
        request = compat_alloc_user_space(nbytes);
-       if (!access_ok(VERIFY_WRITE, request, nbytes))
+       if (!request)
                return -EFAULT;
        list = (struct drm_buf_pub *) (request + 1);
 
@@ -563,7 +564,7 @@ static int compat_drm_freebufs(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+       if (!request)
                return -EFAULT;
        if (__put_user(req32.count, &request->count)
            || __put_user((int __user *)(unsigned long)req32.list,
@@ -589,7 +590,7 @@ static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+       if (!request)
                return -EFAULT;
        if (__put_user(req32.ctx_id, &request->ctx_id)
            || __put_user((void *)(unsigned long)req32.handle,
@@ -613,7 +614,7 @@ static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
+       if (!request)
                return -EFAULT;
        if (__put_user(ctx_id, &request->ctx_id))
                return -EFAULT;
@@ -646,7 +647,7 @@ static int compat_drm_resctx(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        res = compat_alloc_user_space(sizeof(*res));
-       if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
+       if (!res)
                return -EFAULT;
        if (__put_user(res32.count, &res->count)
            || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
@@ -689,7 +690,7 @@ static int compat_drm_dma(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        d = compat_alloc_user_space(sizeof(*d));
-       if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
+       if (!d)
                return -EFAULT;
 
        if (__put_user(d32.context, &d->context)
@@ -764,7 +765,7 @@ static int compat_drm_agp_info(struct file *file, unsigned int cmd,
        int err;
 
        info = compat_alloc_user_space(sizeof(*info));
-       if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
+       if (!info)
                return -EFAULT;
 
        err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
@@ -807,7 +808,7 @@ static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+       if (!request
            || __put_user(req32.size, &request->size)
            || __put_user(req32.type, &request->type))
                return -EFAULT;
@@ -834,7 +835,7 @@ static int compat_drm_agp_free(struct file *file, unsigned int cmd,
        u32 handle;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+       if (!request
            || get_user(handle, &argp->handle)
            || __put_user(handle, &request->handle))
                return -EFAULT;
@@ -858,7 +859,7 @@ static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+       if (!request
            || __put_user(req32.handle, &request->handle)
            || __put_user(req32.offset, &request->offset))
                return -EFAULT;
@@ -874,7 +875,7 @@ static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
        u32 handle;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+       if (!request
            || get_user(handle, &argp->handle)
            || __put_user(handle, &request->handle))
                return -EFAULT;
@@ -897,8 +898,7 @@ static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
        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))
+       if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
            || __get_user(x, &argp->size)
            || __put_user(x, &request->size))
                return -EFAULT;
@@ -923,8 +923,7 @@ static int compat_drm_sg_free(struct file *file, unsigned int cmd,
        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))
+       if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
            || __get_user(x, &argp->handle)
            || __put_user(x << PAGE_SHIFT, &request->handle))
                return -EFAULT;
@@ -952,7 +951,7 @@ static int compat_drm_update_draw(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
+       if (!request ||
            __put_user(update32.handle, &request->handle) ||
            __put_user(update32.type, &request->type) ||
            __put_user(update32.num, &request->num) ||
@@ -994,7 +993,7 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
                return -EFAULT;
 
        request = compat_alloc_user_space(sizeof(*request));
-       if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
+       if (!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))
@@ -1016,6 +1015,63 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
        return 0;
 }
 
+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_cmd232 req32;
+       struct drm_mode_fb_cmd2 __user *req64;
+       int i;
+       int err;
+
+       if (copy_from_user(&req32, argp, sizeof(req32)))
+               return -EFAULT;
+
+       req64 = compat_alloc_user_space(sizeof(*req64));
+
+       if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
+           || __put_user(req32.width, &req64->width)
+           || __put_user(req32.height, &req64->height)
+           || __put_user(req32.pixel_format, &req64->pixel_format)
+           || __put_user(req32.flags, &req64->flags))
+               return -EFAULT;
+
+       for (i = 0; i < 4; i++) {
+               if (__put_user(req32.handles[i], &req64->handles[i]))
+                       return -EFAULT;
+               if (__put_user(req32.pitches[i], &req64->pitches[i]))
+                       return -EFAULT;
+               if (__put_user(req32.offsets[i], &req64->offsets[i]))
+                       return -EFAULT;
+               if (__put_user(req32.modifier[i], &req64->modifier[i]))
+                       return -EFAULT;
+       }
+
+       err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
+       if (err)
+               return err;
+
+       if (__get_user(req32.fb_id, &req64->fb_id))
+               return -EFAULT;
+
+       if (copy_to_user(argp, &req32, sizeof(req32)))
+               return -EFAULT;
+
+       return 0;
+}
+
 static 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,
@@ -1048,6 +1104,7 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
        [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
 #endif
        [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
+       [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
 };
 
 /**
Unnamed repository; edit this file 'description' to name the repository.