diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_usif.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_usif.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_usif.c b/drivers/gpu/drm/nouveau/nouveau_usif.c deleted file mode 100644 index 002d1479ba89..000000000000 --- a/drivers/gpu/drm/nouveau/nouveau_usif.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright 2014 Red Hat Inc. - * - * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. - * - * Authors: Ben Skeggs <bskeggs@redhat.com> - */ - -#include "nouveau_drv.h" -#include "nouveau_usif.h" -#include "nouveau_abi16.h" - -#include <nvif/unpack.h> -#include <nvif/client.h> -#include <nvif/ioctl.h> - -#include <nvif/class.h> -#include <nvif/cl0080.h> - -struct usif_object { - struct list_head head; - u8 route; - u64 token; -}; - -static void -usif_object_dtor(struct usif_object *object) -{ - list_del(&object->head); - kfree(object); -} - -static int -usif_object_new(struct drm_file *f, void *data, u32 size, void *argv, u32 argc, bool parent_abi16) -{ - struct nouveau_cli *cli = nouveau_cli(f); - struct nvif_client *client = &cli->base; - union { - struct nvif_ioctl_new_v0 v0; - } *args = data; - struct usif_object *object; - int ret = -ENOSYS; - - if ((ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) - return ret; - - switch (args->v0.oclass) { - case NV_DMA_FROM_MEMORY: - case NV_DMA_TO_MEMORY: - case NV_DMA_IN_MEMORY: - return -EINVAL; - case NV_DEVICE: { - union { - struct nv_device_v0 v0; - } *args = data; - - if ((ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) - return ret; - - args->v0.priv = false; - break; - } - default: - if (!parent_abi16) - return -EINVAL; - break; - } - - if (!(object = kmalloc(sizeof(*object), GFP_KERNEL))) - return -ENOMEM; - list_add(&object->head, &cli->objects); - - object->route = args->v0.route; - object->token = args->v0.token; - args->v0.route = NVDRM_OBJECT_USIF; - args->v0.token = (unsigned long)(void *)object; - ret = nvif_client_ioctl(client, argv, argc); - if (ret) { - usif_object_dtor(object); - return ret; - } - - args->v0.token = object->token; - args->v0.route = object->route; - return 0; -} - -int -usif_ioctl(struct drm_file *filp, void __user *user, u32 argc) -{ - struct nouveau_cli *cli = nouveau_cli(filp); - struct nvif_client *client = &cli->base; - void *data = kmalloc(argc, GFP_KERNEL); - u32 size = argc; - union { - struct nvif_ioctl_v0 v0; - } *argv = data; - struct usif_object *object; - bool abi16 = false; - u8 owner; - int ret; - - if (ret = -ENOMEM, !argv) - goto done; - if (ret = -EFAULT, copy_from_user(argv, user, size)) - goto done; - - if (!(ret = nvif_unpack(-ENOSYS, &data, &size, argv->v0, 0, 0, true))) { - /* block access to objects not created via this interface */ - owner = argv->v0.owner; - if (argv->v0.object == 0ULL && - argv->v0.type != NVIF_IOCTL_V0_DEL) - argv->v0.owner = NVDRM_OBJECT_ANY; /* except client */ - else - argv->v0.owner = NVDRM_OBJECT_USIF; - } else - goto done; - - /* USIF slightly abuses some return-only ioctl members in order - * to provide interoperability with the older ABI16 objects - */ - mutex_lock(&cli->mutex); - if (argv->v0.route) { - if (ret = -EINVAL, argv->v0.route == 0xff) - ret = nouveau_abi16_usif(filp, argv, argc); - if (ret) { - mutex_unlock(&cli->mutex); - goto done; - } - - abi16 = true; - } - - switch (argv->v0.type) { - case NVIF_IOCTL_V0_NEW: - ret = usif_object_new(filp, data, size, argv, argc, abi16); - break; - default: - ret = nvif_client_ioctl(client, argv, argc); - break; - } - if (argv->v0.route == NVDRM_OBJECT_USIF) { - object = (void *)(unsigned long)argv->v0.token; - argv->v0.route = object->route; - argv->v0.token = object->token; - if (ret == 0 && argv->v0.type == NVIF_IOCTL_V0_DEL) { - list_del(&object->head); - kfree(object); - } - } else { - argv->v0.route = NVIF_IOCTL_V0_ROUTE_HIDDEN; - argv->v0.token = 0; - } - argv->v0.owner = owner; - mutex_unlock(&cli->mutex); - - if (copy_to_user(user, argv, argc)) - ret = -EFAULT; -done: - kfree(argv); - return ret; -} - -void -usif_client_fini(struct nouveau_cli *cli) -{ - struct usif_object *object, *otemp; - - list_for_each_entry_safe(object, otemp, &cli->objects, head) { - usif_object_dtor(object); - } -} - -void -usif_client_init(struct nouveau_cli *cli) -{ - INIT_LIST_HEAD(&cli->objects); -} |