155 lines
4.2 KiB
C
155 lines
4.2 KiB
C
/* irq-test-common.h - IRQ utilities for tests */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Interrupt stuff, abstracted across CPU architectures.
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*/
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#ifndef _IRQ_TEST_COMMON__H_
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#define _IRQ_TEST_COMMON__H_
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#if defined(CONFIG_X86_32)
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#define IRQ_PRIORITY 3
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#elif defined(CONFIG_ARM)
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#if defined(CONFIG_CPU_CORTEX_M)
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#define IRQ_PRIORITY _EXC_PRIO(3)
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#endif /* CONFIG_CPU_CORTEX_M */
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#endif
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/*
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* NUM_SW_IRQS must be defined before this file is included, and it
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* currently only supports 1 or 2 as valid values.
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*/
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#if !defined(NUM_SW_IRQS)
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#error NUM_SW_IRQS must be defined before including irq-test-common.h
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#elif NUM_SW_IRQS < 1 || NUM_SW_IRQS > 2
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#error NUM_SW_IRQS only supports 1 or 2 IRQs
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#endif
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typedef void (*vvfn)(void); /* void-void function pointer */
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typedef void (*vvpfn)(void *); /* void-void_pointer function pointer */
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#if defined(CONFIG_X86_32)
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/*
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* Opcode for generating a software interrupt. The ISR associated with each
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* of these software interrupts will call either nano_isr_lifo_put() or
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* nano_isr_lifo_get(). The imm8 data in the opcode sequence will need to be
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* filled in after calling irq_connect().
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*/
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static char sw_isr_trigger_0[] = {
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0xcd, /* OPCODE: INT imm8 */
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0x00, /* imm8 data (vector to trigger) filled in at runtime */
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0xc3 /* OPCODE: RET (near) */
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};
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#if NUM_SW_IRQS >= 2
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static char sw_isr_trigger_1[] = {
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/* same as above */
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0xcd,
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0x00,
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0xc3
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};
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#endif /* NUM_SW_IRQS >= 2 */
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#elif defined(CONFIG_ARM)
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#if defined(CONFIG_CPU_CORTEX_M)
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#include <nanokernel.h>
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static inline void sw_isr_trigger_0(void)
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{
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_NvicSwInterruptTrigger(0);
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}
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#if NUM_SW_IRQS >= 2
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static inline void sw_isr_trigger_1(void)
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{
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_NvicSwInterruptTrigger(1);
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}
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#endif /* NUM_SW_IRQS >= 2 */
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#endif /* CONFIG_CPU_CORTEX_M */
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#endif
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struct isrInitInfo {
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vvpfn isr[2];
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void *arg[2];
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};
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/**
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*
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* @brief Init interrupts
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*
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*/
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static int initIRQ(struct isrInitInfo *i)
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{
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#if defined(CONFIG_X86_32)
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int vector; /* vector to which interrupt is connected */
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if (i->isr[0]) {
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vector = irq_connect(NANO_SOFT_IRQ, IRQ_PRIORITY, i->isr[0],
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i->arg[0]);
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if (-1 == vector) {
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return -1;
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}
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sw_isr_trigger_0[1] = vector;
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}
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#if NUM_SW_IRQS >= 2
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if (i->isr[1]) {
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vector = irq_connect(NANO_SOFT_IRQ, IRQ_PRIORITY, i->isr[1],
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i->arg[1]);
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if (-1 == vector) {
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return -1;
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}
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sw_isr_trigger_1[1] = vector;
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}
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#endif /* NUM_SW_IRQS >= 2 */
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#elif defined(CONFIG_ARM)
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#if defined(CONFIG_CPU_CORTEX_M)
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if (i->isr[0]) {
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(void) irq_connect(0, IRQ_PRIORITY, i->isr[0], i->arg[0]);
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irq_enable(0);
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}
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if (i->isr[1]) {
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(void) irq_connect(1, IRQ_PRIORITY, i->isr[1], i->arg[1]);
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irq_enable(1);
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}
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#endif /* CONFIG_CPU_CORTEX_M */
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#endif /* CONFIG_X86_32 */
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return 0;
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}
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#endif /* _IRQ_TEST_COMMON__H_ */
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