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f88d368453
Change local_ctl_set_bit() and local_ctl_clear_bit() so they return the previous value of the to be changed control register. This is useful if a bit is only changed temporarily and the previous content needs to be restored. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
256 lines
7.8 KiB
C
256 lines
7.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 1999, 2009
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*
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* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef __ASM_S390_CTLREG_H
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#define __ASM_S390_CTLREG_H
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#include <linux/bits.h>
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#define CR0_TRANSACTIONAL_EXECUTION_BIT (63 - 8)
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#define CR0_CLOCK_COMPARATOR_SIGN_BIT (63 - 10)
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#define CR0_CRYPTOGRAPHY_COUNTER_BIT (63 - 13)
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#define CR0_PAI_EXTENSION_BIT (63 - 14)
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#define CR0_CPUMF_EXTRACTION_AUTH_BIT (63 - 15)
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#define CR0_WARNING_TRACK_BIT (63 - 30)
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#define CR0_LOW_ADDRESS_PROTECTION_BIT (63 - 35)
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#define CR0_FETCH_PROTECTION_OVERRIDE_BIT (63 - 38)
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#define CR0_STORAGE_PROTECTION_OVERRIDE_BIT (63 - 39)
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#define CR0_EDAT_BIT (63 - 40)
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#define CR0_INSTRUCTION_EXEC_PROTECTION_BIT (63 - 43)
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#define CR0_VECTOR_BIT (63 - 46)
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#define CR0_MALFUNCTION_ALERT_SUBMASK_BIT (63 - 48)
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#define CR0_EMERGENCY_SIGNAL_SUBMASK_BIT (63 - 49)
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#define CR0_EXTERNAL_CALL_SUBMASK_BIT (63 - 50)
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#define CR0_CLOCK_COMPARATOR_SUBMASK_BIT (63 - 52)
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#define CR0_CPU_TIMER_SUBMASK_BIT (63 - 53)
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#define CR0_SERVICE_SIGNAL_SUBMASK_BIT (63 - 54)
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#define CR0_UNUSED_56_BIT (63 - 56)
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#define CR0_INTERRUPT_KEY_SUBMASK_BIT (63 - 57)
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#define CR0_MEASUREMENT_ALERT_SUBMASK_BIT (63 - 58)
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#define CR0_ETR_SUBMASK_BIT (63 - 59)
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#define CR0_IUCV_BIT (63 - 62)
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#define CR0_TRANSACTIONAL_EXECUTION BIT(CR0_TRANSACTIONAL_EXECUTION_BIT)
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#define CR0_CLOCK_COMPARATOR_SIGN BIT(CR0_CLOCK_COMPARATOR_SIGN_BIT)
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#define CR0_CRYPTOGRAPHY_COUNTER BIT(CR0_CRYPTOGRAPHY_COUNTER_BIT)
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#define CR0_PAI_EXTENSION BIT(CR0_PAI_EXTENSION_BIT)
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#define CR0_CPUMF_EXTRACTION_AUTH BIT(CR0_CPUMF_EXTRACTION_AUTH_BIT)
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#define CR0_WARNING_TRACK BIT(CR0_WARNING_TRACK_BIT)
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#define CR0_LOW_ADDRESS_PROTECTION BIT(CR0_LOW_ADDRESS_PROTECTION_BIT)
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#define CR0_FETCH_PROTECTION_OVERRIDE BIT(CR0_FETCH_PROTECTION_OVERRIDE_BIT)
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#define CR0_STORAGE_PROTECTION_OVERRIDE BIT(CR0_STORAGE_PROTECTION_OVERRIDE_BIT)
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#define CR0_EDAT BIT(CR0_EDAT_BIT)
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#define CR0_INSTRUCTION_EXEC_PROTECTION BIT(CR0_INSTRUCTION_EXEC_PROTECTION_BIT)
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#define CR0_VECTOR BIT(CR0_VECTOR_BIT)
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#define CR0_MALFUNCTION_ALERT_SUBMASK BIT(CR0_MALFUNCTION_ALERT_SUBMASK_BIT)
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#define CR0_EMERGENCY_SIGNAL_SUBMASK BIT(CR0_EMERGENCY_SIGNAL_SUBMASK_BIT)
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#define CR0_EXTERNAL_CALL_SUBMASK BIT(CR0_EXTERNAL_CALL_SUBMASK_BIT)
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#define CR0_CLOCK_COMPARATOR_SUBMASK BIT(CR0_CLOCK_COMPARATOR_SUBMASK_BIT)
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#define CR0_CPU_TIMER_SUBMASK BIT(CR0_CPU_TIMER_SUBMASK_BIT)
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#define CR0_SERVICE_SIGNAL_SUBMASK BIT(CR0_SERVICE_SIGNAL_SUBMASK_BIT)
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#define CR0_UNUSED_56 BIT(CR0_UNUSED_56_BIT)
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#define CR0_INTERRUPT_KEY_SUBMASK BIT(CR0_INTERRUPT_KEY_SUBMASK_BIT)
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#define CR0_MEASUREMENT_ALERT_SUBMASK BIT(CR0_MEASUREMENT_ALERT_SUBMASK_BIT)
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#define CR0_ETR_SUBMASK BIT(CR0_ETR_SUBMASK_BIT)
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#define CR0_IUCV BIT(CR0_IUCV_BIT)
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#define CR2_MIO_ADDRESSING_BIT (63 - 58)
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#define CR2_GUARDED_STORAGE_BIT (63 - 59)
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#define CR2_MIO_ADDRESSING BIT(CR2_MIO_ADDRESSING_BIT)
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#define CR2_GUARDED_STORAGE BIT(CR2_GUARDED_STORAGE_BIT)
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#define CR14_UNUSED_32_BIT (63 - 32)
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#define CR14_UNUSED_33_BIT (63 - 33)
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#define CR14_CHANNEL_REPORT_SUBMASK_BIT (63 - 35)
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#define CR14_RECOVERY_SUBMASK_BIT (63 - 36)
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#define CR14_DEGRADATION_SUBMASK_BIT (63 - 37)
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#define CR14_EXTERNAL_DAMAGE_SUBMASK_BIT (63 - 38)
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#define CR14_WARNING_SUBMASK_BIT (63 - 39)
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#define CR14_UNUSED_32 BIT(CR14_UNUSED_32_BIT)
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#define CR14_UNUSED_33 BIT(CR14_UNUSED_33_BIT)
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#define CR14_CHANNEL_REPORT_SUBMASK BIT(CR14_CHANNEL_REPORT_SUBMASK_BIT)
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#define CR14_RECOVERY_SUBMASK BIT(CR14_RECOVERY_SUBMASK_BIT)
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#define CR14_DEGRADATION_SUBMASK BIT(CR14_DEGRADATION_SUBMASK_BIT)
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#define CR14_EXTERNAL_DAMAGE_SUBMASK BIT(CR14_EXTERNAL_DAMAGE_SUBMASK_BIT)
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#define CR14_WARNING_SUBMASK BIT(CR14_WARNING_SUBMASK_BIT)
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#ifndef __ASSEMBLY__
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#include <linux/bug.h>
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struct ctlreg {
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unsigned long val;
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};
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#define __local_ctl_load(low, high, array) do { \
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struct addrtype { \
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char _[sizeof(array)]; \
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}; \
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int _high = high; \
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int _low = low; \
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int _esize; \
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\
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_esize = (_high - _low + 1) * sizeof(struct ctlreg); \
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BUILD_BUG_ON(sizeof(struct addrtype) != _esize); \
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typecheck(struct ctlreg, array[0]); \
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asm volatile( \
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" lctlg %[_low],%[_high],%[_arr]\n" \
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: \
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: [_arr] "Q" (*(struct addrtype *)(&array)), \
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[_low] "i" (low), [_high] "i" (high) \
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: "memory"); \
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} while (0)
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#define __local_ctl_store(low, high, array) do { \
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struct addrtype { \
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char _[sizeof(array)]; \
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}; \
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int _high = high; \
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int _low = low; \
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int _esize; \
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\
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_esize = (_high - _low + 1) * sizeof(struct ctlreg); \
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BUILD_BUG_ON(sizeof(struct addrtype) != _esize); \
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typecheck(struct ctlreg, array[0]); \
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asm volatile( \
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" stctg %[_low],%[_high],%[_arr]\n" \
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: [_arr] "=Q" (*(struct addrtype *)(&array)) \
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: [_low] "i" (low), [_high] "i" (high)); \
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} while (0)
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static __always_inline void local_ctl_load(unsigned int cr, struct ctlreg *reg)
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{
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asm volatile(
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" lctlg %[cr],%[cr],%[reg]\n"
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:
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: [reg] "Q" (*reg), [cr] "i" (cr)
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: "memory");
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}
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static __always_inline void local_ctl_store(unsigned int cr, struct ctlreg *reg)
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{
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asm volatile(
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" stctg %[cr],%[cr],%[reg]\n"
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: [reg] "=Q" (*reg)
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: [cr] "i" (cr));
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}
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static __always_inline struct ctlreg local_ctl_set_bit(unsigned int cr, unsigned int bit)
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{
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struct ctlreg new, old;
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local_ctl_store(cr, &old);
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new = old;
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new.val |= 1UL << bit;
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local_ctl_load(cr, &new);
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return old;
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}
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static __always_inline struct ctlreg local_ctl_clear_bit(unsigned int cr, unsigned int bit)
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{
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struct ctlreg new, old;
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local_ctl_store(cr, &old);
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new = old;
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new.val &= ~(1UL << bit);
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local_ctl_load(cr, &new);
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return old;
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}
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struct lowcore;
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void system_ctlreg_lock(void);
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void system_ctlreg_unlock(void);
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void system_ctlreg_init_save_area(struct lowcore *lc);
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void system_ctlreg_modify(unsigned int cr, unsigned long data, int request);
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enum {
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CTLREG_SET_BIT,
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CTLREG_CLEAR_BIT,
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CTLREG_LOAD,
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};
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static inline void system_ctl_set_bit(unsigned int cr, unsigned int bit)
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{
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system_ctlreg_modify(cr, bit, CTLREG_SET_BIT);
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}
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static inline void system_ctl_clear_bit(unsigned int cr, unsigned int bit)
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{
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system_ctlreg_modify(cr, bit, CTLREG_CLEAR_BIT);
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}
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static inline void system_ctl_load(unsigned int cr, struct ctlreg *reg)
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{
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system_ctlreg_modify(cr, reg->val, CTLREG_LOAD);
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}
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union ctlreg0 {
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unsigned long val;
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struct ctlreg reg;
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struct {
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unsigned long : 8;
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unsigned long tcx : 1; /* Transactional-Execution control */
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unsigned long pifo : 1; /* Transactional-Execution Program-
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Interruption-Filtering Override */
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unsigned long : 3;
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unsigned long ccc : 1; /* Cryptography counter control */
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unsigned long pec : 1; /* PAI extension control */
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unsigned long : 17;
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unsigned long : 3;
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unsigned long lap : 1; /* Low-address-protection control */
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unsigned long : 4;
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unsigned long edat : 1; /* Enhanced-DAT-enablement control */
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unsigned long : 2;
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unsigned long iep : 1; /* Instruction-Execution-Protection */
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unsigned long : 1;
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unsigned long afp : 1; /* AFP-register control */
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unsigned long vx : 1; /* Vector enablement control */
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unsigned long : 7;
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unsigned long sssm : 1; /* Service signal subclass mask */
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unsigned long : 9;
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};
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};
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union ctlreg2 {
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unsigned long val;
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struct ctlreg reg;
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struct {
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unsigned long : 33;
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unsigned long ducto : 25;
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unsigned long : 1;
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unsigned long gse : 1;
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unsigned long : 1;
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unsigned long tds : 1;
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unsigned long tdc : 2;
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};
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};
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union ctlreg5 {
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unsigned long val;
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struct ctlreg reg;
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struct {
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unsigned long : 33;
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unsigned long pasteo: 25;
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unsigned long : 6;
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};
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};
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union ctlreg15 {
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unsigned long val;
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struct ctlreg reg;
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struct {
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unsigned long lsea : 61;
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unsigned long : 3;
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};
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};
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_S390_CTLREG_H */
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