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-rw-r--r--nvif/notify.c248
1 files changed, 0 insertions, 248 deletions
diff --git a/nvif/notify.c b/nvif/notify.c
deleted file mode 100644
index 0898c3155..000000000
--- a/nvif/notify.c
+++ /dev/null
@@ -1,248 +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 <nvif/client.h>
-#include <nvif/driver.h>
-#include <nvif/notify.h>
-#include <nvif/object.h>
-#include <nvif/ioctl.h>
-#include <nvif/event.h>
-
-static inline int
-nvif_notify_put_(struct nvif_notify *notify)
-{
- struct nvif_object *object = notify->object;
- struct {
- struct nvif_ioctl_v0 ioctl;
- struct nvif_ioctl_ntfy_put_v0 ntfy;
- } args = {
- .ioctl.type = NVIF_IOCTL_V0_NTFY_PUT,
- .ntfy.index = notify->index,
- };
-
- if (atomic_inc_return(&notify->putcnt) != 1)
- return 0;
-
- return nvif_object_ioctl(object, &args, sizeof(args), NULL);
-}
-
-int
-nvif_notify_put(struct nvif_notify *notify)
-{
- if (likely(notify->object) &&
- test_and_clear_bit(NVIF_NOTIFY_USER, &notify->flags)) {
- int ret = nvif_notify_put_(notify);
- if (test_bit(NVIF_NOTIFY_WORK, &notify->flags))
- flush_work(&notify->work);
- return ret;
- }
- return 0;
-}
-
-static inline int
-nvif_notify_get_(struct nvif_notify *notify)
-{
- struct nvif_object *object = notify->object;
- struct {
- struct nvif_ioctl_v0 ioctl;
- struct nvif_ioctl_ntfy_get_v0 ntfy;
- } args = {
- .ioctl.type = NVIF_IOCTL_V0_NTFY_GET,
- .ntfy.index = notify->index,
- };
-
- if (atomic_dec_return(&notify->putcnt) != 0)
- return 0;
-
- return nvif_object_ioctl(object, &args, sizeof(args), NULL);
-}
-
-int
-nvif_notify_get(struct nvif_notify *notify)
-{
- if (likely(notify->object) &&
- !test_and_set_bit(NVIF_NOTIFY_USER, &notify->flags))
- return nvif_notify_get_(notify);
- return 0;
-}
-
-static inline int
-nvif_notify_func(struct nvif_notify *notify, bool keep)
-{
- int ret = notify->func(notify);
- if (ret == NVIF_NOTIFY_KEEP ||
- !test_and_clear_bit(NVKM_NOTIFY_USER, &notify->flags)) {
- if (!keep)
- atomic_dec(&notify->putcnt);
- else
- nvif_notify_get_(notify);
- }
- return ret;
-}
-
-static void
-nvif_notify_work(struct work_struct *work)
-{
- struct nvif_notify *notify = container_of(work, typeof(*notify), work);
- nvif_notify_func(notify, true);
-}
-
-int
-nvif_notify(const void *header, u32 length, const void *data, u32 size)
-{
- struct nvif_notify *notify = NULL;
- const union {
- struct nvif_notify_rep_v0 v0;
- } *args = header;
- int ret = NVIF_NOTIFY_DROP;
-
- if (length == sizeof(args->v0) && args->v0.version == 0) {
- if (WARN_ON(args->v0.route))
- return NVIF_NOTIFY_DROP;
- notify = (void *)(unsigned long)args->v0.token;
- }
-
- if (!WARN_ON(notify == NULL)) {
- struct nvif_client *client = nvif_client(notify->object);
- if (!WARN_ON(notify->size != size)) {
- atomic_inc(&notify->putcnt);
- if (test_bit(NVIF_NOTIFY_WORK, &notify->flags)) {
- memcpy((void *)notify->data, data, size);
- schedule_work(&notify->work);
- return NVIF_NOTIFY_DROP;
- }
- notify->data = data;
- ret = nvif_notify_func(notify, client->driver->keep);
- notify->data = NULL;
- }
- }
-
- return ret;
-}
-
-int
-nvif_notify_fini(struct nvif_notify *notify)
-{
- struct nvif_object *object = notify->object;
- struct {
- struct nvif_ioctl_v0 ioctl;
- struct nvif_ioctl_ntfy_del_v0 ntfy;
- } args = {
- .ioctl.type = NVIF_IOCTL_V0_NTFY_DEL,
- .ntfy.index = notify->index,
- };
- int ret = nvif_notify_put(notify);
- if (ret >= 0 && object) {
- ret = nvif_object_ioctl(object, &args, sizeof(args), NULL);
- if (ret == 0) {
- nvif_object_ref(NULL, &notify->object);
- kfree((void *)notify->data);
- }
- }
- return ret;
-}
-
-int
-nvif_notify_init(struct nvif_object *object, void (*dtor)(struct nvif_notify *),
- int (*func)(struct nvif_notify *), bool work, u8 event,
- void *data, u32 size, u32 reply, struct nvif_notify *notify)
-{
- struct {
- struct nvif_ioctl_v0 ioctl;
- struct nvif_ioctl_ntfy_new_v0 ntfy;
- struct nvif_notify_req_v0 req;
- } *args;
- int ret = -ENOMEM;
-
- notify->object = NULL;
- nvif_object_ref(object, &notify->object);
- notify->flags = 0;
- atomic_set(&notify->putcnt, 1);
- notify->dtor = dtor;
- notify->func = func;
- notify->data = NULL;
- notify->size = reply;
- if (work) {
- INIT_WORK(&notify->work, nvif_notify_work);
- set_bit(NVIF_NOTIFY_WORK, &notify->flags);
- notify->data = kmalloc(notify->size, GFP_KERNEL);
- if (!notify->data)
- goto done;
- }
-
- if (!(args = kmalloc(sizeof(*args) + size, GFP_KERNEL)))
- goto done;
- args->ioctl.version = 0;
- args->ioctl.type = NVIF_IOCTL_V0_NTFY_NEW;
- args->ntfy.version = 0;
- args->ntfy.event = event;
- args->req.version = 0;
- args->req.reply = notify->size;
- args->req.route = 0;
- args->req.token = (unsigned long)(void *)notify;
-
- memcpy(args->req.data, data, size);
- ret = nvif_object_ioctl(object, args, sizeof(*args) + size, NULL);
- notify->index = args->ntfy.index;
- kfree(args);
-done:
- if (ret)
- nvif_notify_fini(notify);
- return ret;
-}
-
-static void
-nvif_notify_del(struct nvif_notify *notify)
-{
- nvif_notify_fini(notify);
- kfree(notify);
-}
-
-void
-nvif_notify_ref(struct nvif_notify *notify, struct nvif_notify **pnotify)
-{
- BUG_ON(notify != NULL);
- if (*pnotify)
- (*pnotify)->dtor(*pnotify);
- *pnotify = notify;
-}
-
-int
-nvif_notify_new(struct nvif_object *object, int (*func)(struct nvif_notify *),
- bool work, u8 type, void *data, u32 size, u32 reply,
- struct nvif_notify **pnotify)
-{
- struct nvif_notify *notify = kzalloc(sizeof(*notify), GFP_KERNEL);
- if (notify) {
- int ret = nvif_notify_init(object, nvif_notify_del, func, work,
- type, data, size, reply, notify);
- if (ret) {
- kfree(notify);
- notify = NULL;
- }
- *pnotify = notify;
- return ret;
- }
- return -ENOMEM;
-}
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