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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/kernel/doorbell.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2018 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include <stdint.h>
#include <arch/ppc.H>
#include <kernel/task.H>
#include <kernel/taskmgr.H>
#include <kernel/cpu.H>
#include <kernel/doorbell.H>
#include <kernel/console.H>
#include <kernel/cpumgr.H>
void doorbell_clear()
{
register uint64_t msgtype = _DOORBELL_MSG_TYPE;
asm volatile("msgclr %0" :: "r" (msgtype));
return;
}
void doorbell_broadcast()
{
/*TODO RTC 152189
size_t threadCount = CpuManager::getThreadCount();
uint64_t msgtype = _DOORBELL_MSG_TYPE;
uint64_t thread = getPIR() & (threadCount - 1);
for (size_t i = 0; i < threadCount; ++i)
{
if (i != thread)
{
register uint64_t msg = msgtype | i;
asm volatile("msgsnd %0" :: "r" (msg));
}
}
**/
}
void doorbell_send(uint64_t i_pir)
{
uint64_t msgtype = _DOORBELL_MSG_TYPE;
register uint64_t msg = msgtype | i_pir;
asm volatile("msgsnd %0" :: "r" (msg));
return;
}
void send_doorbell_wakeup(uint64_t i_pir)
{
cpu_t *l_cpu = CpuManager::getCpu(i_pir);
printkd("send_doorbell_wakeup to pir: %lx\n", i_pir);
//Create WorkItem and put on the stack to be executed during doorbell
// execution
KernelWorkItem* l_work = new CpuWakeupDoorbellWorkItem();
l_cpu->doorbell_actions.push(l_work);
//Send doorbell to wakeup core/thread
doorbell_send(i_pir);
}
void send_doorbell_ipc(uint64_t i_pir)
{
printk("send_doorbell_ipc to pir: %lx\n", i_pir);
doorbell_send(i_pir);
}
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