42 	drm_context_t handle;  member
51  * Free a handle from the context bitmap.
53  * \param dev DRM device.
54  * \param ctx_handle context handle.
66 	mutex_lock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_free()
67 	idr_remove(&dev->ctx_idr, ctx_handle);  in drm_legacy_ctxbitmap_free()
68 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_free()
74  * \param dev DRM device.
75  * \return (non-negative) context handle on success or a negative number on failure.
84 	mutex_lock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_next()
85 	ret = idr_alloc(&dev->ctx_idr, NULL, DRM_RESERVED_CONTEXTS, 0,  in drm_legacy_ctxbitmap_next()
87 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_next()
94  * \param dev DRM device.
104 	idr_init(&dev->ctx_idr);  in drm_legacy_ctxbitmap_init()
110  * \param dev DRM device.
121 	mutex_lock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_cleanup()
122 	idr_destroy(&dev->ctx_idr);  in drm_legacy_ctxbitmap_cleanup()
123 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_ctxbitmap_cleanup()
127  * drm_legacy_ctxbitmap_flush() - Flush all contexts owned by a file
128  * @dev: DRM device to operate on
143 	mutex_lock(&dev->ctxlist_mutex);  in drm_legacy_ctxbitmap_flush()
145 	list_for_each_entry_safe(pos, tmp, &dev->ctxlist, head) {  in drm_legacy_ctxbitmap_flush()
146 		if (pos->tag == file &&  in drm_legacy_ctxbitmap_flush()
147 		    pos->handle != DRM_KERNEL_CONTEXT) {  in drm_legacy_ctxbitmap_flush()
148 			if (dev->driver->context_dtor)  in drm_legacy_ctxbitmap_flush()
149 				dev->driver->context_dtor(dev, pos->handle);  in drm_legacy_ctxbitmap_flush()
151 			drm_legacy_ctxbitmap_free(dev, pos->handle);  in drm_legacy_ctxbitmap_flush()
152 			list_del(&pos->head);  in drm_legacy_ctxbitmap_flush()
157 	mutex_unlock(&dev->ctxlist_mutex);  in drm_legacy_ctxbitmap_flush()
167  * Get per-context SAREA.
169  * \param inode device inode.
175  * Gets the map from drm_device::ctx_idr with the handle specified and
176  * returns its handle.
187 		return -EOPNOTSUPP;  in drm_legacy_getsareactx()
189 	mutex_lock(&dev->struct_mutex);  in drm_legacy_getsareactx()
191 	map = idr_find(&dev->ctx_idr, request->ctx_id);  in drm_legacy_getsareactx()
193 		mutex_unlock(&dev->struct_mutex);  in drm_legacy_getsareactx()
194 		return -EINVAL;  in drm_legacy_getsareactx()
197 	request->handle = NULL;  in drm_legacy_getsareactx()
198 	list_for_each_entry(_entry, &dev->maplist, head) {  in drm_legacy_getsareactx()
199 		if (_entry->map == map) {  in drm_legacy_getsareactx()
200 			request->handle =  in drm_legacy_getsareactx()
201 			    (void *)(unsigned long)_entry->user_token;  in drm_legacy_getsareactx()
206 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_getsareactx()
208 	if (request->handle == NULL)  in drm_legacy_getsareactx()
209 		return -EINVAL;  in drm_legacy_getsareactx()
215  * Set per-context SAREA.
217  * \param inode device inode.
235 		return -EOPNOTSUPP;  in drm_legacy_setsareactx()
237 	mutex_lock(&dev->struct_mutex);  in drm_legacy_setsareactx()
238 	list_for_each_entry(r_list, &dev->maplist, head) {  in drm_legacy_setsareactx()
239 		if (r_list->map  in drm_legacy_setsareactx()
240 		    && r_list->user_token == (unsigned long) request->handle)  in drm_legacy_setsareactx()
244 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_setsareactx()
245 	return -EINVAL;  in drm_legacy_setsareactx()
248 	map = r_list->map;  in drm_legacy_setsareactx()
252 	if (IS_ERR(idr_replace(&dev->ctx_idr, map, request->ctx_id)))  in drm_legacy_setsareactx()
255 	mutex_unlock(&dev->struct_mutex);  in drm_legacy_setsareactx()
269  * \param dev DRM device.
270  * \param old old context handle.
271  * \param new new context handle.
278 	if (test_and_set_bit(0, &dev->context_flag)) {  in drm_context_switch()
279 		DRM_ERROR("Reentering -- FIXME\n");  in drm_context_switch()
280 		return -EBUSY;  in drm_context_switch()
285 	if (new == dev->last_context) {  in drm_context_switch()
286 		clear_bit(0, &dev->context_flag);  in drm_context_switch()
296  * \param dev DRM device.
297  * \param new new context handle.
307 	dev->last_context = new;	/* PRE/POST: This is the _only_ writer. */  in drm_context_switch_complete()
309 	if (!_DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock)) {  in drm_context_switch_complete()
317 	clear_bit(0, &dev->context_flag);  in drm_context_switch_complete()
325  * \param inode device inode.
340 		return -EOPNOTSUPP;  in drm_legacy_resctx()
342 	if (res->count >= DRM_RESERVED_CONTEXTS) {  in drm_legacy_resctx()
345 			ctx.handle = i;  in drm_legacy_resctx()
346 			if (copy_to_user(&res->contexts[i], &ctx, sizeof(ctx)))  in drm_legacy_resctx()
347 				return -EFAULT;  in drm_legacy_resctx()
350 	res->count = DRM_RESERVED_CONTEXTS;  in drm_legacy_resctx()
358  * \param inode device inode.
364  * Get a new handle for the context and copy to userspace.
375 		return -EOPNOTSUPP;  in drm_legacy_addctx()
385 		/* Should this return -EBUSY instead? */  in drm_legacy_addctx()
389 	ctx->handle = tmp_handle;  in drm_legacy_addctx()
394 		return -ENOMEM;  in drm_legacy_addctx()
397 	INIT_LIST_HEAD(&ctx_entry->head);  in drm_legacy_addctx()
398 	ctx_entry->handle = ctx->handle;  in drm_legacy_addctx()
399 	ctx_entry->tag = file_priv;  in drm_legacy_addctx()
401 	mutex_lock(&dev->ctxlist_mutex);  in drm_legacy_addctx()
402 	list_add(&ctx_entry->head, &dev->ctxlist);  in drm_legacy_addctx()
403 	mutex_unlock(&dev->ctxlist_mutex);  in drm_legacy_addctx()
411  * \param inode device inode.
424 		return -EOPNOTSUPP;  in drm_legacy_getctx()
426 	/* This is 0, because we don't handle any context flags */  in drm_legacy_getctx()
427 	ctx->flags = 0;  in drm_legacy_getctx()
435  * \param inode device inode.
450 		return -EOPNOTSUPP;  in drm_legacy_switchctx()
452 	DRM_DEBUG("%d\n", ctx->handle);  in drm_legacy_switchctx()
453 	return drm_context_switch(dev, dev->last_context, ctx->handle);  in drm_legacy_switchctx()
459  * \param inode device inode.
474 		return -EOPNOTSUPP;  in drm_legacy_newctx()
476 	DRM_DEBUG("%d\n", ctx->handle);  in drm_legacy_newctx()
477 	drm_context_switch_complete(dev, file_priv, ctx->handle);  in drm_legacy_newctx()
485  * \param inode device inode.
500 		return -EOPNOTSUPP;  in drm_legacy_rmctx()
502 	DRM_DEBUG("%d\n", ctx->handle);  in drm_legacy_rmctx()
503 	if (ctx->handle != DRM_KERNEL_CONTEXT) {  in drm_legacy_rmctx()
504 		if (dev->driver->context_dtor)  in drm_legacy_rmctx()
505 			dev->driver->context_dtor(dev, ctx->handle);  in drm_legacy_rmctx()
506 		drm_legacy_ctxbitmap_free(dev, ctx->handle);  in drm_legacy_rmctx()
509 	mutex_lock(&dev->ctxlist_mutex);  in drm_legacy_rmctx()
510 	if (!list_empty(&dev->ctxlist)) {  in drm_legacy_rmctx()
513 		list_for_each_entry_safe(pos, n, &dev->ctxlist, head) {  in drm_legacy_rmctx()
514 			if (pos->handle == ctx->handle) {  in drm_legacy_rmctx()
515 				list_del(&pos->head);  in drm_legacy_rmctx()
520 	mutex_unlock(&dev->ctxlist_mutex);  in drm_legacy_rmctx()