osd-contiki/lib/include/isr.h
2011-02-28 18:44:42 -05:00

173 lines
5.4 KiB
C

/*
* Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
* to the MC1322x project (http://mc1322x.devl.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of libmc1322x: see http://mc1322x.devl.org
* for details.
*
*
*/
#ifndef ISR_H
#define ISR_H
#include <stdint.h>
#define INTBASE (0x80020000)
/* Structure-based ITC access */
#define __INTERRUPT_union(x) \
union { \
uint32_t x; \
struct ITC_##x { \
uint32_t ASM:1; \
uint32_t UART1:1; \
uint32_t UART2:1; \
uint32_t CRM:1; \
uint32_t I2C:1; \
uint32_t TMR:1; \
uint32_t SPIF:1; \
uint32_t MACA:1; \
uint32_t SSI:1; \
uint32_t ADC:1; \
uint32_t SPI:1; \
uint32_t :21; \
} x##bits; \
};
struct ITC_struct {
union {
uint32_t INTCNTL;
struct ITC_INTCNTL {
uint32_t :19;
uint32_t FIAD:1;
uint32_t NIAD:1;
uint32_t :11;
} INTCNTLbits;
};
uint32_t NIMASK;
uint32_t INTENNUM;
uint32_t INTDISNUM;
__INTERRUPT_union(INTENABLE);
__INTERRUPT_union(INTTYPE);
uint32_t reserved[4];
uint32_t NIVECTOR;
uint32_t FIVECTOR;
__INTERRUPT_union(INTSRC);
__INTERRUPT_union(INTFRC);
__INTERRUPT_union(NIPEND);
__INTERRUPT_union(FIPEND);
};
#undef __INTERRUPT_union
static volatile struct ITC_struct * const ITC = (void *) (INTBASE);
/* Old register definitions, for compatibility */
#ifndef REG_NO_COMPAT
#define INTCNTL_OFF (0x0)
#define INTENNUM_OFF (0x8)
#define INTDISNUM_OFF (0xC)
#define INTENABLE_OFF (0x10)
#define INTSRC_OFF (0x30)
#define INTFRC_OFF (0x34)
#define NIPEND_OFF (0x38)
static volatile uint32_t * const INTCNTL = ((volatile uint32_t *) (INTBASE + INTCNTL_OFF));
static volatile uint32_t * const INTENNUM = ((volatile uint32_t *) (INTBASE + INTENNUM_OFF));
static volatile uint32_t * const INTDISNUM = ((volatile uint32_t *) (INTBASE + INTDISNUM_OFF));
static volatile uint32_t * const INTENABLE = ((volatile uint32_t *) (INTBASE + INTENABLE_OFF));
static volatile uint32_t * const INTSRC = ((volatile uint32_t *) (INTBASE + INTSRC_OFF));
static volatile uint32_t * const INTFRC = ((volatile uint32_t *) (INTBASE + INTFRC_OFF));
static volatile uint32_t * const NIPEND = ((volatile uint32_t *) (INTBASE + NIPEND_OFF));
enum interrupt_nums {
INT_NUM_ASM = 0,
INT_NUM_UART1,
INT_NUM_UART2,
INT_NUM_CRM,
INT_NUM_I2C,
INT_NUM_TMR,
INT_NUM_SPIF,
INT_NUM_MACA,
INT_NUM_SSI,
INT_NUM_ADC,
INT_NUM_SPI,
};
#define global_irq_disable() (set_bit(*INTCNTL,20))
#define global_irq_enable() (clear_bit(*INTCNTL,20))
#define enable_irq(irq) (*INTENNUM = INT_NUM_##irq)
#define disable_irq(irq) (*INTDISNUM = INT_NUM_##irq)
#define safe_irq_disable(x) volatile uint32_t saved_irq; saved_irq = *INTENABLE; disable_irq(x)
#define irq_restore() *INTENABLE = saved_irq
#endif /* REG_NO_COMPAT */
/* Macro to safely disable all interrupts for a block of code.
Use it like this:
disable_int({
asdf = 1234;
printf("hi\r\n");
});
*/
#define __int_top() volatile uint32_t saved_intenable
#define __int_disable() saved_intenable = ITC->INTENABLE; ITC->INTENABLE = 0
#define __int_enable() ITC->INTENABLE = saved_intenable
#define disable_int(x) do { \
__int_top(); \
__int_disable(); \
x; \
__int_enable(); } while(0)
extern void tmr0_isr(void) __attribute__((weak));
extern void tmr1_isr(void) __attribute__((weak));
extern void tmr2_isr(void) __attribute__((weak));
extern void tmr3_isr(void) __attribute__((weak));
extern void rtc_isr(void) __attribute__((weak));
extern void kbi4_isr(void) __attribute__((weak));
extern void kbi5_isr(void) __attribute__((weak));
extern void kbi6_isr(void) __attribute__((weak));
extern void kbi7_isr(void) __attribute__((weak));
extern void cal_isr(void) __attribute__((weak));
extern void uart1_isr(void) __attribute__((weak));
extern void maca_isr(void) __attribute__((weak));
extern void asm_isr(void) __attribute__((weak));
#endif