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parisc: Add constants for control registers and clean up mfctl() 

Clean up the code for the mfctl() and mtctl() functions and add often
used constants.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2022-03-25 17:37:51 +01:00
parent ed9794812b
commit 7e0b2be94c
1 changed files with 8 additions and 9 deletions
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17
arch/parisc/include/asm/special_insns.h
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@ -30,11 +30,15 @@
pa; \
})
#define CR_EIEM 15 /* External Interrupt Enable Mask */
#define CR_CR16 16 /* CR16 Interval Timer */
#define CR_EIRR 23 /* External Interrupt Request Register */
#define mfctl(reg) ({ \
unsigned long cr; \
__asm__ __volatile__( \
"mfctl " #reg ",%0" : \
"=r" (cr) \
"mfctl %1,%0" : \
"=r" (cr) : "i" (reg) \
); \
cr; \
})
@ -44,13 +48,8 @@
: /* no outputs */ \
: "r" (gr), "i" (cr) : "memory")
/* these are here to de-mystefy the calling code, and to provide hooks */
/* which I needed for debugging EIEM problems -PB */
#define get_eiem() mfctl(15)
static inline void set_eiem(unsigned long val)
{
mtctl(val, 15);
}
#define get_eiem() mfctl(CR_EIEM)
#define set_eiem(val) mtctl(val, CR_EIEM)
#define mfsp(reg) ({ \
unsigned long cr; \