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Add structure-based ITC access

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This commit is contained in:
Jim Paris 2010-09-26 15:59:11 -04:00
parent 920954f398
commit bf94b6d3bd
1 changed files with 62 additions and 8 deletions
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70
lib/include/isr.h
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@ -37,6 +37,59 @@
#define ISR_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);
#define ITC (*_ITC)
/* Old register definitions, for compatibility */
#ifndef REG_NO_COMPAT
#define INTCNTL_OFF (0x0)
#define INTENNUM_OFF (0x8)
#define INTDISNUM_OFF (0xC)
@ -45,13 +98,13 @@
#define INTFRC_OFF (0x34)
#define NIPEND_OFF (0x38)
#define INTCNTL ((volatile uint32_t *) (INTBASE + INTCNTL_OFF))
#define INTENNUM ((volatile uint32_t *) (INTBASE + INTENNUM_OFF))
#define INTDISNUM ((volatile uint32_t *) (INTBASE + INTDISNUM_OFF))
#define INTENABLE ((volatile uint32_t *) (INTBASE + INTENABLE_OFF))
#define INTSRC ((volatile uint32_t *) (INTBASE + INTSRC_OFF))
#define INTFRC ((volatile uint32_t *) (INTBASE + INTFRC_OFF))
#define NIPEND ((volatile uint32_t *) (INTBASE + NIPEND_OFF))
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,
@ -76,6 +129,8 @@ enum interrupt_nums {
#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 */
extern void tmr0_isr(void) __attribute__((weak));
extern void tmr1_isr(void) __attribute__((weak));
extern void tmr2_isr(void) __attribute__((weak));
@ -95,4 +150,3 @@ extern void maca_isr(void) __attribute__((weak));
#endif