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
__ctl_set_bit(unsigned int cr,unsigned int bit)59 static __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
__ctl_clear_bit(unsigned int cr,unsigned int bit)68 static __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
77 void smp_ctl_set_bit(int cr, int bit);
78 void smp_ctl_clear_bit(int cr, int bit);
79
80 union 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
103 union 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