/* * Copyright IBM Corp. 1999, 2009 * * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> */ #ifndef __ASM_CTL_REG_H #define __ASM_CTL_REG_H #include <linux/bug.h> #define __ctl_load(array, low, high) { \ typedef struct { char _[sizeof(array)]; } addrtype; \ \ BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\ asm volatile( \ " lctlg %1,%2,%0\n" \ : \ : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high) \ : "memory"); \ } #define __ctl_store(array, low, high) { \ typedef struct { char _[sizeof(array)]; } addrtype; \ \ BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\ asm volatile( \ " stctg %1,%2,%0\n" \ : "=Q" (*(addrtype *)(&array)) \ : "i" (low), "i" (high)); \ } static inline void __ctl_set_bit(unsigned int cr, unsigned int bit) { unsigned long reg; __ctl_store(reg, cr, cr); reg |= 1UL << bit; __ctl_load(reg, cr, cr); } static inline void __ctl_clear_bit(unsigned int cr, unsigned int bit) { unsigned long reg; __ctl_store(reg, cr, cr); reg &= ~(1UL << bit); __ctl_load(reg, cr, cr); } void smp_ctl_set_bit(int cr, int bit); void smp_ctl_clear_bit(int cr, int bit); union ctlreg0 { unsigned long val; struct { unsigned long : 32; unsigned long : 3; unsigned long lap : 1; /* Low-address-protection control */ unsigned long : 4; unsigned long edat : 1; /* Enhanced-DAT-enablement control */ unsigned long : 4; unsigned long afp : 1; /* AFP-register control */ unsigned long vx : 1; /* Vector enablement control */ unsigned long : 17; }; }; #ifdef [31mCONFIG_SMP[0m # define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit) # define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit) #else # define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit) # define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit) #endif #endif /* __ASM_CTL_REG_H */ |