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irq_offload: API to run a function in IRQ context

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Software interrupts or system calls aren't really appropriate for
zephyr, but we have an ongoing need in our test code to run a
function with arguments synchronously in interrupt context.

This patch introduces irq_offload() which allows us to do this without
separate initialization or having to manage fake IRQs in the
interrupt controller.

ARM assembly code contributed by Benjamin Walsh
<benjamin.walsh@windriver.com>

ARC is not yet implemented but will be in a subsequent patch.

irq_test_common.h has been removed and all test cases updated to
use the new API.

Change-Id: I9af99ed31b62bc7eb340e32cf65e3d11354d1ec7
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2015-11-17 14:08:45 -08:00 • committed by Anas Nashif
commit bba9510319
44 changed files with 313 additions and 350 deletions
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39
include/irq_offload.h Normal file
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/*
* Copyright (c) 2015 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.
*/
/**
* @file IRQ Offload interface
*/
#ifndef _IRQ_OFFLOAD_H_
#define _IRQ_OFFLOAD_H_
typedef void (*irq_offload_routine_t)(void *parameter);
/**
* @brief Run a function in interrupt context
*
* This function synchronously runs the provided function in interrupt
* context, passing in the supplied parameter. Useful for test code
* which needs to show that kernel objects work correctly in interrupt
* context.
*
* @param routine The function to run
* @param parameter Argument to pass to the function when it is run as an
* interrupt
*/
void irq_offload(irq_offload_routine_t routine, void *parameter);
#endif /* _SW_IRQ_H_ */