1/* SPDX-License-Identifier: GPL-2.0 */
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
11#include <linux/bits.h>
12
13#define CR0_CLOCK_COMPARATOR_SIGN	BIT(63 - 10)
14#define CR0_LOW_ADDRESS_PROTECTION	BIT(63 - 35)
15#define CR0_EMERGENCY_SIGNAL_SUBMASK	BIT(63 - 49)
16#define CR0_EXTERNAL_CALL_SUBMASK	BIT(63 - 50)
17#define CR0_CLOCK_COMPARATOR_SUBMASK	BIT(63 - 52)
18#define CR0_CPU_TIMER_SUBMASK		BIT(63 - 53)
19#define CR0_SERVICE_SIGNAL_SUBMASK	BIT(63 - 54)
20#define CR0_UNUSED_56			BIT(63 - 56)
21#define CR0_INTERRUPT_KEY_SUBMASK	BIT(63 - 57)
22#define CR0_MEASUREMENT_ALERT_SUBMASK	BIT(63 - 58)
23
24#define CR2_GUARDED_STORAGE		BIT(63 - 59)
25
26#define CR14_UNUSED_32			BIT(63 - 32)
27#define CR14_UNUSED_33			BIT(63 - 33)
28#define CR14_CHANNEL_REPORT_SUBMASK	BIT(63 - 35)
29#define CR14_RECOVERY_SUBMASK		BIT(63 - 36)
30#define CR14_DEGRADATION_SUBMASK	BIT(63 - 37)
31#define CR14_EXTERNAL_DAMAGE_SUBMASK	BIT(63 - 38)
32#define CR14_WARNING_SUBMASK		BIT(63 - 39)
33
34#ifndef __ASSEMBLY__
35
36#include <linux/bug.h>
37
38#define __ctl_load(array, low, high) do {				\
39	typedef struct { char _[sizeof(array)]; } addrtype;		\
40									\
41	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
42	asm volatile(							\
43		"	lctlg	%1,%2,%0\n"				\
44		:							\
45		: "Q" (*(addrtype *)(&array)), "i" (low), "i" (high)	\
46		: "memory");						\
47} while (0)
48
49#define __ctl_store(array, low, high) do {				\
50	typedef struct { char _[sizeof(array)]; } addrtype;		\
51									\
52	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
53	asm volatile(							\
54		"	stctg	%1,%2,%0\n"				\
55		: "=Q" (*(addrtype *)(&array))				\
56		: "i" (low), "i" (high));				\
57} while (0)
58
59static __always_inline void __ctl_set_bit(unsigned int cr, unsigned int bit)
60{
61	unsigned long reg;
62
63	__ctl_store(reg, cr, cr);
64	reg |= 1UL << bit;
65	__ctl_load(reg, cr, cr);
66}
67
68static __always_inline void __ctl_clear_bit(unsigned int cr, unsigned int bit)
69{
70	unsigned long reg;
71
72	__ctl_store(reg, cr, cr);
73	reg &= ~(1UL << bit);
74	__ctl_load(reg, cr, cr);
75}
76
77void smp_ctl_set_bit(int cr, int bit);
78void smp_ctl_clear_bit(int cr, int bit);
79
80union ctlreg0 {
81	unsigned long val;
82	struct {
83		unsigned long	   : 8;
84		unsigned long tcx  : 1;	/* Transactional-Execution control */
85		unsigned long pifo : 1;	/* Transactional-Execution Program-
86					   Interruption-Filtering Override */
87		unsigned long	   : 22;
88		unsigned long	   : 3;
89		unsigned long lap  : 1; /* Low-address-protection control */
90		unsigned long	   : 4;
91		unsigned long edat : 1; /* Enhanced-DAT-enablement control */
92		unsigned long	   : 2;
93		unsigned long iep  : 1; /* Instruction-Execution-Protection */
94		unsigned long	   : 1;
95		unsigned long afp  : 1; /* AFP-register control */
96		unsigned long vx   : 1; /* Vector enablement control */
97		unsigned long	   : 7;
98		unsigned long sssm : 1; /* Service signal subclass mask */
99		unsigned long	   : 9;
100	};
101};
102
103union ctlreg2 {
104	unsigned long val;
105	struct {
106		unsigned long	    : 33;
107		unsigned long ducto : 25;
108		unsigned long	    : 1;
109		unsigned long gse   : 1;
110		unsigned long	    : 1;
111		unsigned long tds   : 1;
112		unsigned long tdc   : 2;
113	};
114};
115
116#define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit)
117#define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit)
118
119#endif /* __ASSEMBLY__ */
120#endif /* __ASM_CTL_REG_H */
121