[mirror_ubuntu-focal-kernel.git] / 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);
}

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	   : 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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
a0616cde DH	2	/*
	3	* Copyright IBM Corp. 1999, 2009
	4	*
	5	* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
	6	*/
	7
	8	#ifndef __ASM_CTL_REG_H
	9	#define __ASM_CTL_REG_H
	10
acf6a004 MH	11	#include <linux/bug.h>
acf6a004 MH	12
1228f7be	13	#define __ctl_load(array, low, high) do { \
12325f09 HC	14	typedef struct { char _[sizeof(array)]; } addrtype; \
	15	\
	16	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
	17	asm volatile( \
5a79859a	18	" lctlg %1,%2,%0\n" \
e991c24d HC	19	: \
	20	: "Q" ((addrtype )(&array)), "i" (low), "i" (high) \
	21	: "memory"); \
1228f7be	22	} while (0)
12325f09	23
1228f7be	24	#define __ctl_store(array, low, high) do { \
12325f09 HC	25	typedef struct { char _[sizeof(array)]; } addrtype; \
	26	\
	27	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
	28	asm volatile( \
5a79859a	29	" stctg %1,%2,%0\n" \
12325f09 HC	30	: "=Q" ((addrtype )(&array)) \
12325f09 HC	31	: "i" (low), "i" (high)); \
1228f7be	32	} while (0)
12325f09 HC	33
	34	static inline void __ctl_set_bit(unsigned int cr, unsigned int bit)
	35	{
	36	unsigned long reg;
	37
	38	__ctl_store(reg, cr, cr);
	39	reg \|= 1UL << bit;
	40	__ctl_load(reg, cr, cr);
	41	}
	42
	43	static inline void __ctl_clear_bit(unsigned int cr, unsigned int bit)
	44	{
	45	unsigned long reg;
	46
	47	__ctl_store(reg, cr, cr);
	48	reg &= ~(1UL << bit);
	49	__ctl_load(reg, cr, cr);
	50	}
	51
	52	void smp_ctl_set_bit(int cr, int bit);
	53	void smp_ctl_clear_bit(int cr, int bit);
a0616cde	54
5f4e87a2 HC	55	union ctlreg0 {
	56	unsigned long val;
	57	struct {
5f4e87a2	58	unsigned long : 32;
5f4e87a2 HC	59	unsigned long : 3;
	60	unsigned long lap : 1; /* Low-address-protection control */
	61	unsigned long : 4;
	62	unsigned long edat : 1; /* Enhanced-DAT-enablement control */
6ae1574c CB	63	unsigned long : 2;
	64	unsigned long iep : 1; /* Instruction-Execution-Protection */
	65	unsigned long : 1;
cad49cfc HC	66	unsigned long afp : 1; /* AFP-register control */
cad49cfc HC	67	unsigned long vx : 1; /* Vector enablement control */
742dc577 HC	68	unsigned long : 7;
	69	unsigned long sssm : 1; /* Service signal subclass mask */
	70	unsigned long : 9;
5f4e87a2 HC	71	};
	72	};
	73
a0616cde	74	#ifdef CONFIG_SMP
12325f09 HC	75	# define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit)
12325f09 HC	76	# define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit)
a0616cde	77	#else
12325f09 HC	78	# define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit)
	79	# define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit)
	80	#endif
a0616cde DH	81
a0616cde DH	82	#endif /* __ASM_CTL_REG_H */