Release 4.14 arch/s390/include/asm/ctl_reg.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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) do {                            \
        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");                                            \
} while (0)


#define __ctl_store(array, low, high) do {                            \
        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));                               \
} while (0)



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);
}

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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);
}

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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	   : 2;
		
unsigned long iep  : 1; /* Instruction-Execution-Protection */
		unsigned long	   : 1;
		
unsigned long afp  : 1; /* AFP-register control */
		
unsigned long vx   : 1; /* Vector enablement control */
		unsigned long	   : 7;
		
unsigned long sssm : 1; /* Service signal subclass mask */
		unsigned long	   : 9;
	};
};

#ifdef CONFIG_SMP

# 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 */
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Directory: arch/s390/include/asm

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