Commit 7e0b2be9 authored by Helge Deller's avatar Helge Deller
Browse files

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: default avatarHelge Deller <deller@gmx.de>
parent ed979481

arch/parisc/include/asm/special_insns.h

+8 −9
Original line number Diff line number Diff line
@@ -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;		\