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0076f8bf1d
Checks interrupt masking and priorities. Adds to `make test_xics` which is run in `make check` also. Signed-off-by: Michael Neuling <mikey@neuling.org>
37 lines
759 B
C
37 lines
759 B
C
#include <stdint.h>
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#define XICS_BASE 0xc0004000
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static uint64_t xics_base = XICS_BASE;
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#define XICS_XIRR_POLL 0x0
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#define XICS_XIRR 0x4
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#define XICS_RESV 0x8
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#define XICS_MFRR 0xC
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uint8_t xics_read8(int offset)
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{
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uint32_t val;
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__asm__ volatile("lbzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
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return val;
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}
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void xics_write8(int offset, uint8_t val)
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{
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__asm__ volatile("stbcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset));
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}
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uint32_t xics_read32(int offset)
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{
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uint32_t val;
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__asm__ volatile("lwzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
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return val;
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}
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void xics_write32(int offset, uint32_t val)
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{
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__asm__ volatile("stwcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset));
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}
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