| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * 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. |
| */ |
| |
| #include <nanokernel.h> |
| #include <nano_private.h> |
| #include <irq_offload.h> |
| |
| volatile irq_offload_routine_t _offload_routine; |
| static volatile void *offload_param; |
| |
| /* Called by _enter_irq if it was passed 0 for ipending. |
| * Just in case the offload routine itself generates an unhandled |
| * exception, clear the offload_routine global before executing. |
| */ |
| void _irq_do_offload(void) |
| { |
| irq_offload_routine_t tmp; |
| |
| if (!_offload_routine) { |
| return; |
| } |
| |
| tmp = _offload_routine; |
| _offload_routine = NULL; |
| |
| tmp((void *)offload_param); |
| } |
| |
| void irq_offload(irq_offload_routine_t routine, void *parameter) |
| { |
| int key; |
| |
| key = irq_lock(); |
| _offload_routine = routine; |
| offload_param = parameter; |
| |
| __asm__ volatile ("trap"); |
| |
| irq_unlock(key); |
| } |
| |