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/*
*
* (C) COPYRIGHT 2010-2012 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <kbase/src/common/mali_kbase.h>
#define beenthere(f, a...) pr_debug("%s:" f, __func__, ##a)
STATIC base_jd_udata kbase_event_process(kbase_context *kctx, kbase_jd_atom *katom)
{
base_jd_udata data;
KBASE_DEBUG_ASSERT(kctx != NULL);
KBASE_DEBUG_ASSERT(katom != NULL);
KBASE_DEBUG_ASSERT(katom->status == KBASE_JD_ATOM_STATE_COMPLETED);
data = katom->udata;
KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx, atomic_sub_return(1, &kctx->timeline.jd_atoms_in_flight));
katom->status = KBASE_JD_ATOM_STATE_UNUSED;
wake_up(&katom->completed);
return data;
}
int kbase_event_pending(kbase_context *ctx)
{
int ret;
KBASE_DEBUG_ASSERT(ctx);
mutex_lock(&ctx->event_mutex);
ret = (!list_empty(&ctx->event_list)) || (MALI_TRUE == ctx->event_closed);
mutex_unlock(&ctx->event_mutex);
return ret;
}
KBASE_EXPORT_TEST_API(kbase_event_pending)
int kbase_event_dequeue(kbase_context *ctx, base_jd_event_v2 *uevent)
{
kbase_jd_atom *atom;
KBASE_DEBUG_ASSERT(ctx);
mutex_lock(&ctx->event_mutex);
if (list_empty(&ctx->event_list)) {
if (ctx->event_closed) {
/* generate the BASE_JD_EVENT_DRV_TERMINATED message on the fly */
mutex_unlock(&ctx->event_mutex);
uevent->event_code = BASE_JD_EVENT_DRV_TERMINATED;
memset(&uevent->udata, 0, sizeof(uevent->udata));
beenthere("event system closed, returning BASE_JD_EVENT_DRV_TERMINATED(0x%X)\n", BASE_JD_EVENT_DRV_TERMINATED);
return 0;
} else {
mutex_unlock(&ctx->event_mutex);
return -1;
}
}
/* normal event processing */
atom = list_entry(ctx->event_list.next, kbase_jd_atom, dep_item[0]);
list_del(ctx->event_list.next);
mutex_unlock(&ctx->event_mutex);
beenthere("event dequeuing %p\n", (void *)atom);
uevent->event_code = atom->event_code;
uevent->atom_number = (atom - ctx->jctx.atoms);
uevent->udata = kbase_event_process(ctx, atom);
return 0;
}
KBASE_EXPORT_TEST_API(kbase_event_dequeue)
static void kbase_event_post_worker(struct work_struct *data)
{
kbase_jd_atom *atom = CONTAINER_OF(data, kbase_jd_atom, work);
kbase_context *ctx = atom->kctx;
if (atom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES)
kbase_jd_free_external_resources(atom);
if (atom->core_req & BASE_JD_REQ_EVENT_ONLY_ON_FAILURE) {
if (atom->event_code == BASE_JD_EVENT_DONE) {
/* Don't report the event */
kbase_event_process(ctx, atom);
return;
}
}
mutex_lock(&ctx->event_mutex);
list_add_tail(&atom->dep_item[0], &ctx->event_list);
mutex_unlock(&ctx->event_mutex);
kbase_event_wakeup(ctx);
}
void kbase_event_post(kbase_context *ctx, kbase_jd_atom *atom)
{
KBASE_DEBUG_ASSERT(ctx);
KBASE_DEBUG_ASSERT(ctx->event_workq);
KBASE_DEBUG_ASSERT(atom);
INIT_WORK(&atom->work, kbase_event_post_worker);
queue_work(ctx->event_workq, &atom->work);
}
KBASE_EXPORT_TEST_API(kbase_event_post)
void kbase_event_close(kbase_context *kctx)
{
mutex_lock(&kctx->event_mutex);
kctx->event_closed = MALI_TRUE;
mutex_unlock(&kctx->event_mutex);
kbase_event_wakeup(kctx);
}
mali_error kbase_event_init(kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx);
INIT_LIST_HEAD(&kctx->event_list);
mutex_init(&kctx->event_mutex);
kctx->event_closed = MALI_FALSE;
kctx->event_workq = alloc_workqueue("kbase_event", WQ_MEM_RECLAIM, 1);
if (NULL == kctx->event_workq)
return MALI_ERROR_FUNCTION_FAILED;
return MALI_ERROR_NONE;
}
KBASE_EXPORT_TEST_API(kbase_event_init)
void kbase_event_cleanup(kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx);
KBASE_DEBUG_ASSERT(kctx->event_workq);
flush_workqueue(kctx->event_workq);
destroy_workqueue(kctx->event_workq);
/* We use kbase_event_dequeue to remove the remaining events as that
* deals with all the cleanup needed for the atoms.
*
* Note: use of kctx->event_list without a lock is safe because this must be the last
* thread using it (because we're about to terminate the lock)
*/
while (!list_empty(&kctx->event_list)) {
base_jd_event_v2 event;
kbase_event_dequeue(kctx, &event);
}
}
KBASE_EXPORT_TEST_API(kbase_event_cleanup)
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