ctlreg.h

  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_S390_CTLREG_H
  9#define __ASM_S390_CTLREG_H
 10
 11#include <linux/bits.h>
 12
 13#define CR0_TRANSACTIONAL_EXECUTION_BIT		(63 - 8)
 14#define CR0_CLOCK_COMPARATOR_SIGN_BIT		(63 - 10)
 15#define CR0_CRYPTOGRAPHY_COUNTER_BIT		(63 - 13)
 16#define CR0_PAI_EXTENSION_BIT			(63 - 14)
 17#define CR0_CPUMF_EXTRACTION_AUTH_BIT		(63 - 15)
 18#define CR0_WARNING_TRACK_BIT			(63 - 30)
 19#define CR0_LOW_ADDRESS_PROTECTION_BIT		(63 - 35)
 20#define CR0_FETCH_PROTECTION_OVERRIDE_BIT	(63 - 38)
 21#define CR0_STORAGE_PROTECTION_OVERRIDE_BIT	(63 - 39)
 22#define CR0_EDAT_BIT				(63 - 40)
 23#define CR0_INSTRUCTION_EXEC_PROTECTION_BIT	(63 - 43)
 24#define CR0_VECTOR_BIT				(63 - 46)
 25#define CR0_MALFUNCTION_ALERT_SUBMASK_BIT	(63 - 48)
 26#define CR0_EMERGENCY_SIGNAL_SUBMASK_BIT	(63 - 49)
 27#define CR0_EXTERNAL_CALL_SUBMASK_BIT		(63 - 50)
 28#define CR0_CLOCK_COMPARATOR_SUBMASK_BIT	(63 - 52)
 29#define CR0_CPU_TIMER_SUBMASK_BIT		(63 - 53)
 30#define CR0_SERVICE_SIGNAL_SUBMASK_BIT		(63 - 54)
 31#define CR0_UNUSED_56_BIT			(63 - 56)
 32#define CR0_INTERRUPT_KEY_SUBMASK_BIT		(63 - 57)
 33#define CR0_MEASUREMENT_ALERT_SUBMASK_BIT	(63 - 58)
 34#define CR0_ETR_SUBMASK_BIT			(63 - 59)
 35#define CR0_IUCV_BIT				(63 - 62)
 36
 37#define CR0_TRANSACTIONAL_EXECUTION		BIT(CR0_TRANSACTIONAL_EXECUTION_BIT)
 38#define CR0_CLOCK_COMPARATOR_SIGN		BIT(CR0_CLOCK_COMPARATOR_SIGN_BIT)
 39#define CR0_CRYPTOGRAPHY_COUNTER		BIT(CR0_CRYPTOGRAPHY_COUNTER_BIT)
 40#define CR0_PAI_EXTENSION			BIT(CR0_PAI_EXTENSION_BIT)
 41#define CR0_CPUMF_EXTRACTION_AUTH		BIT(CR0_CPUMF_EXTRACTION_AUTH_BIT)
 42#define CR0_WARNING_TRACK			BIT(CR0_WARNING_TRACK_BIT)
 43#define CR0_LOW_ADDRESS_PROTECTION		BIT(CR0_LOW_ADDRESS_PROTECTION_BIT)
 44#define CR0_FETCH_PROTECTION_OVERRIDE		BIT(CR0_FETCH_PROTECTION_OVERRIDE_BIT)
 45#define CR0_STORAGE_PROTECTION_OVERRIDE		BIT(CR0_STORAGE_PROTECTION_OVERRIDE_BIT)
 46#define CR0_EDAT				BIT(CR0_EDAT_BIT)
 47#define CR0_INSTRUCTION_EXEC_PROTECTION		BIT(CR0_INSTRUCTION_EXEC_PROTECTION_BIT)
 48#define CR0_VECTOR				BIT(CR0_VECTOR_BIT)
 49#define CR0_MALFUNCTION_ALERT_SUBMASK		BIT(CR0_MALFUNCTION_ALERT_SUBMASK_BIT)
 50#define CR0_EMERGENCY_SIGNAL_SUBMASK		BIT(CR0_EMERGENCY_SIGNAL_SUBMASK_BIT)
 51#define CR0_EXTERNAL_CALL_SUBMASK		BIT(CR0_EXTERNAL_CALL_SUBMASK_BIT)
 52#define CR0_CLOCK_COMPARATOR_SUBMASK		BIT(CR0_CLOCK_COMPARATOR_SUBMASK_BIT)
 53#define CR0_CPU_TIMER_SUBMASK			BIT(CR0_CPU_TIMER_SUBMASK_BIT)
 54#define CR0_SERVICE_SIGNAL_SUBMASK		BIT(CR0_SERVICE_SIGNAL_SUBMASK_BIT)
 55#define CR0_UNUSED_56				BIT(CR0_UNUSED_56_BIT)
 56#define CR0_INTERRUPT_KEY_SUBMASK		BIT(CR0_INTERRUPT_KEY_SUBMASK_BIT)
 57#define CR0_MEASUREMENT_ALERT_SUBMASK		BIT(CR0_MEASUREMENT_ALERT_SUBMASK_BIT)
 58#define CR0_ETR_SUBMASK				BIT(CR0_ETR_SUBMASK_BIT)
 59#define CR0_IUCV				BIT(CR0_IUCV_BIT)
 60
 61#define CR2_MIO_ADDRESSING_BIT			(63 - 58)
 62#define CR2_GUARDED_STORAGE_BIT			(63 - 59)
 63
 64#define CR2_MIO_ADDRESSING			BIT(CR2_MIO_ADDRESSING_BIT)
 65#define CR2_GUARDED_STORAGE			BIT(CR2_GUARDED_STORAGE_BIT)
 66
 67#define CR14_UNUSED_32_BIT			(63 - 32)
 68#define CR14_UNUSED_33_BIT			(63 - 33)
 69#define CR14_CHANNEL_REPORT_SUBMASK_BIT		(63 - 35)
 70#define CR14_RECOVERY_SUBMASK_BIT		(63 - 36)
 71#define CR14_DEGRADATION_SUBMASK_BIT		(63 - 37)
 72#define CR14_EXTERNAL_DAMAGE_SUBMASK_BIT	(63 - 38)
 73#define CR14_WARNING_SUBMASK_BIT		(63 - 39)
 74
 75#define CR14_UNUSED_32				BIT(CR14_UNUSED_32_BIT)
 76#define CR14_UNUSED_33				BIT(CR14_UNUSED_33_BIT)
 77#define CR14_CHANNEL_REPORT_SUBMASK		BIT(CR14_CHANNEL_REPORT_SUBMASK_BIT)
 78#define CR14_RECOVERY_SUBMASK			BIT(CR14_RECOVERY_SUBMASK_BIT)
 79#define CR14_DEGRADATION_SUBMASK		BIT(CR14_DEGRADATION_SUBMASK_BIT)
 80#define CR14_EXTERNAL_DAMAGE_SUBMASK		BIT(CR14_EXTERNAL_DAMAGE_SUBMASK_BIT)
 81#define CR14_WARNING_SUBMASK			BIT(CR14_WARNING_SUBMASK_BIT)
 82
 83#ifndef __ASSEMBLER__
 84
 85#include <linux/bug.h>
 86
 87struct ctlreg {
 88	unsigned long val;
 89};
 90
 91#define __local_ctl_load(low, high, array) do {				\
 92	struct addrtype {						\
 93		char _[sizeof(array)];					\
 94	};								\
 95	int _high = high;						\
 96	int _low = low;							\
 97	int _esize;							\
 98									\
 99	_esize = (_high - _low + 1) * sizeof(struct ctlreg);		\
100	BUILD_BUG_ON(sizeof(struct addrtype) != _esize);		\
101	typecheck(struct ctlreg, array[0]);				\
102	asm volatile(							\
103		"	lctlg	%[_low],%[_high],%[_arr]"		\
104		:							\
105		: [_arr] "Q" (*(struct addrtype *)(&array)),		\
106		  [_low] "i" (low), [_high] "i" (high)			\
107		: "memory");						\
108} while (0)
109
110#define __local_ctl_store(low, high, array) do {			\
111	struct addrtype {						\
112		char _[sizeof(array)];					\
113	};								\
114	int _high = high;						\
115	int _low = low;							\
116	int _esize;							\
117									\
118	_esize = (_high - _low + 1) * sizeof(struct ctlreg);		\
119	BUILD_BUG_ON(sizeof(struct addrtype) != _esize);		\
120	typecheck(struct ctlreg, array[0]);				\
121	asm volatile(							\
122		"	stctg	%[_low],%[_high],%[_arr]"		\
123		: [_arr] "=Q" (*(struct addrtype *)(&array))		\
124		: [_low] "i" (low), [_high] "i" (high));		\
125} while (0)
126
127static __always_inline void local_ctl_load(unsigned int cr, struct ctlreg *reg)
128{
129	asm volatile(
130		"	lctlg	%[cr],%[cr],%[reg]"
131		:
132		: [reg] "Q" (*reg), [cr] "i" (cr)
133		: "memory");
134}
135
136static __always_inline void local_ctl_store(unsigned int cr, struct ctlreg *reg)
137{
138	asm volatile(
139		"	stctg	%[cr],%[cr],%[reg]"
140		: [reg] "=Q" (*reg)
141		: [cr] "i" (cr));
142}
143
144static __always_inline struct ctlreg local_ctl_set_bit(unsigned int cr, unsigned int bit)
145{
146	struct ctlreg new, old;
147
148	local_ctl_store(cr, &old);
149	new = old;
150	new.val |= 1UL << bit;
151	local_ctl_load(cr, &new);
152	return old;
153}
154
155static __always_inline struct ctlreg local_ctl_clear_bit(unsigned int cr, unsigned int bit)
156{
157	struct ctlreg new, old;
158
159	local_ctl_store(cr, &old);
160	new = old;
161	new.val &= ~(1UL << bit);
162	local_ctl_load(cr, &new);
163	return old;
164}
165
166struct lowcore;
167
168void system_ctlreg_lock(void);
169void system_ctlreg_unlock(void);
170void system_ctlreg_init_save_area(struct lowcore *lc);
171void system_ctlreg_modify(unsigned int cr, unsigned long data, int request);
172
173enum {
174	CTLREG_SET_BIT,
175	CTLREG_CLEAR_BIT,
176	CTLREG_LOAD,
177};
178
179static inline void system_ctl_set_bit(unsigned int cr, unsigned int bit)
180{
181	system_ctlreg_modify(cr, bit, CTLREG_SET_BIT);
182}
183
184static inline void system_ctl_clear_bit(unsigned int cr, unsigned int bit)
185{
186	system_ctlreg_modify(cr, bit, CTLREG_CLEAR_BIT);
187}
188
189static inline void system_ctl_load(unsigned int cr, struct ctlreg *reg)
190{
191	system_ctlreg_modify(cr, reg->val, CTLREG_LOAD);
192}
193
194union ctlreg0 {
195	unsigned long val;
196	struct ctlreg reg;
197	struct {
198		unsigned long	   : 8;
199		unsigned long tcx  : 1;	/* Transactional-Execution control */
200		unsigned long pifo : 1;	/* Transactional-Execution Program-
201					   Interruption-Filtering Override */
202		unsigned long	   : 3;
203		unsigned long ccc  : 1; /* Cryptography counter control */
204		unsigned long pec  : 1; /* PAI extension control */
205		unsigned long	   : 15;
206		unsigned long wti  : 1; /* Warning-track */
207		unsigned long	   : 4;
208		unsigned long lap  : 1; /* Low-address-protection control */
209		unsigned long	   : 4;
210		unsigned long edat : 1; /* Enhanced-DAT-enablement control */
211		unsigned long	   : 2;
212		unsigned long iep  : 1; /* Instruction-Execution-Protection */
213		unsigned long	   : 1;
214		unsigned long afp  : 1; /* AFP-register control */
215		unsigned long vx   : 1; /* Vector enablement control */
216		unsigned long	   : 7;
217		unsigned long sssm : 1; /* Service signal subclass mask */
218		unsigned long	   : 9;
219	};
220};
221
222union ctlreg2 {
223	unsigned long val;
224	struct ctlreg reg;
225	struct {
226		unsigned long	    : 33;
227		unsigned long ducto : 25;
228		unsigned long	    : 1;
229		unsigned long gse   : 1;
230		unsigned long	    : 1;
231		unsigned long tds   : 1;
232		unsigned long tdc   : 2;
233	};
234};
235
236union ctlreg5 {
237	unsigned long val;
238	struct ctlreg reg;
239	struct {
240		unsigned long	    : 33;
241		unsigned long pasteo: 25;
242		unsigned long	    : 6;
243	};
244};
245
246union ctlreg15 {
247	unsigned long val;
248	struct ctlreg reg;
249	struct {
250		unsigned long lsea  : 61;
251		unsigned long	    : 3;
252	};
253};
254
255#endif /* __ASSEMBLER__ */
256#endif /* __ASM_S390_CTLREG_H */