X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fcore%2Fhandle.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fcore%2Fhandle.c;h=dc7ff10ebe7b5302274cbd9c65eccb8033ee8184;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/core/handle.c b/kernel/drivers/gpu/drm/nouveau/nvkm/core/handle.c new file mode 100644 index 000000000..dc7ff10eb --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/core/handle.c @@ -0,0 +1,221 @@ +/* + * Copyright 2012 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 + */ +#include +#include + +#define hprintk(h,l,f,a...) do { \ + struct nvkm_client *c = nvkm_client((h)->object); \ + struct nvkm_handle *p = (h)->parent; u32 n = p ? p->name : ~0; \ + nv_printk((c), l, "0x%08x:0x%08x "f, n, (h)->name, ##a); \ +} while(0) + +int +nvkm_handle_init(struct nvkm_handle *handle) +{ + struct nvkm_handle *item; + int ret; + + hprintk(handle, TRACE, "init running\n"); + ret = nvkm_object_inc(handle->object); + if (ret) + return ret; + + hprintk(handle, TRACE, "init children\n"); + list_for_each_entry(item, &handle->tree, head) { + ret = nvkm_handle_init(item); + if (ret) + goto fail; + } + + hprintk(handle, TRACE, "init completed\n"); + return 0; +fail: + hprintk(handle, ERROR, "init failed with %d\n", ret); + list_for_each_entry_continue_reverse(item, &handle->tree, head) { + nvkm_handle_fini(item, false); + } + + nvkm_object_dec(handle->object, false); + return ret; +} + +int +nvkm_handle_fini(struct nvkm_handle *handle, bool suspend) +{ + static char *name[2] = { "fini", "suspend" }; + struct nvkm_handle *item; + int ret; + + hprintk(handle, TRACE, "%s children\n", name[suspend]); + list_for_each_entry(item, &handle->tree, head) { + ret = nvkm_handle_fini(item, suspend); + if (ret && suspend) + goto fail; + } + + hprintk(handle, TRACE, "%s running\n", name[suspend]); + if (handle->object) { + ret = nvkm_object_dec(handle->object, suspend); + if (ret && suspend) + goto fail; + } + + hprintk(handle, TRACE, "%s completed\n", name[suspend]); + return 0; +fail: + hprintk(handle, ERROR, "%s failed with %d\n", name[suspend], ret); + list_for_each_entry_continue_reverse(item, &handle->tree, head) { + int rret = nvkm_handle_init(item); + if (rret) + hprintk(handle, FATAL, "failed to restart, %d\n", rret); + } + + return ret; +} + +int +nvkm_handle_create(struct nvkm_object *parent, u32 _parent, u32 _handle, + struct nvkm_object *object, struct nvkm_handle **phandle) +{ + struct nvkm_object *namedb; + struct nvkm_handle *handle; + int ret; + + namedb = parent; + while (!nv_iclass(namedb, NV_NAMEDB_CLASS)) + namedb = namedb->parent; + + handle = kzalloc(sizeof(*handle), GFP_KERNEL); + if (!handle) + return -ENOMEM; + + INIT_LIST_HEAD(&handle->head); + INIT_LIST_HEAD(&handle->tree); + handle->name = _handle; + handle->priv = ~0; + + ret = nvkm_namedb_insert(nv_namedb(namedb), _handle, object, handle); + if (ret) { + kfree(handle); + return ret; + } + + if (nv_parent(parent)->object_attach) { + ret = nv_parent(parent)->object_attach(parent, object, _handle); + if (ret < 0) { + nvkm_handle_destroy(handle); + return ret; + } + + handle->priv = ret; + } + + if (object != namedb) { + while (!nv_iclass(namedb, NV_CLIENT_CLASS)) + namedb = namedb->parent; + + handle->parent = nvkm_namedb_get(nv_namedb(namedb), _parent); + if (handle->parent) { + list_add(&handle->head, &handle->parent->tree); + nvkm_namedb_put(handle->parent); + } + } + + hprintk(handle, TRACE, "created\n"); + *phandle = handle; + return 0; +} + +void +nvkm_handle_destroy(struct nvkm_handle *handle) +{ + struct nvkm_handle *item, *temp; + + hprintk(handle, TRACE, "destroy running\n"); + list_for_each_entry_safe(item, temp, &handle->tree, head) { + nvkm_handle_destroy(item); + } + list_del(&handle->head); + + if (handle->priv != ~0) { + struct nvkm_object *parent = handle->parent->object; + nv_parent(parent)->object_detach(parent, handle->priv); + } + + hprintk(handle, TRACE, "destroy completed\n"); + nvkm_namedb_remove(handle); + kfree(handle); +} + +struct nvkm_object * +nvkm_handle_ref(struct nvkm_object *parent, u32 name) +{ + struct nvkm_object *object = NULL; + struct nvkm_handle *handle; + + while (!nv_iclass(parent, NV_NAMEDB_CLASS)) + parent = parent->parent; + + handle = nvkm_namedb_get(nv_namedb(parent), name); + if (handle) { + nvkm_object_ref(handle->object, &object); + nvkm_namedb_put(handle); + } + + return object; +} + +struct nvkm_handle * +nvkm_handle_get_class(struct nvkm_object *engctx, u16 oclass) +{ + struct nvkm_namedb *namedb; + if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) + return nvkm_namedb_get_class(namedb, oclass); + return NULL; +} + +struct nvkm_handle * +nvkm_handle_get_vinst(struct nvkm_object *engctx, u64 vinst) +{ + struct nvkm_namedb *namedb; + if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) + return nvkm_namedb_get_vinst(namedb, vinst); + return NULL; +} + +struct nvkm_handle * +nvkm_handle_get_cinst(struct nvkm_object *engctx, u32 cinst) +{ + struct nvkm_namedb *namedb; + if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) + return nvkm_namedb_get_cinst(namedb, cinst); + return NULL; +} + +void +nvkm_handle_put(struct nvkm_handle *handle) +{ + if (handle) + nvkm_namedb_put(handle); +}