You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
759 B
C
37 lines
759 B
C
#include <stdint.h>
|
|
|
|
#define XICS_BASE 0xc0004000
|
|
|
|
static uint64_t xics_base = XICS_BASE;
|
|
|
|
#define XICS_XIRR_POLL 0x0
|
|
#define XICS_XIRR 0x4
|
|
#define XICS_RESV 0x8
|
|
#define XICS_MFRR 0xC
|
|
|
|
uint8_t xics_read8(int offset)
|
|
{
|
|
uint32_t val;
|
|
|
|
__asm__ volatile("lbzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
|
|
return val;
|
|
}
|
|
|
|
void xics_write8(int offset, uint8_t val)
|
|
{
|
|
__asm__ volatile("stbcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset));
|
|
}
|
|
|
|
uint32_t xics_read32(int offset)
|
|
{
|
|
uint32_t val;
|
|
|
|
__asm__ volatile("lwzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
|
|
return val;
|
|
}
|
|
|
|
void xics_write32(int offset, uint32_t val)
|
|
{
|
|
__asm__ volatile("stwcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset));
|
|
}
|