arch/s390/include/asm/ctl_reg.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_CTL_REG_H
   9 #define __ASM_CTL_REG_H
  10
  11 #include <linux/const.h>
  12
  13 #define CR2_GUARDED_STORAGE             _BITUL(63 - 59)
  14
  15 #define CR14_CHANNEL_REPORT_SUBMASK     _BITUL(63 - 35)
  16 #define CR14_RECOVERY_SUBMASK           _BITUL(63 - 36)
  17 #define CR14_DEGRADATION_SUBMASK        _BITUL(63 - 37)
  18 #define CR14_EXTERNAL_DAMAGE_SUBMASK    _BITUL(63 - 38)
  19 #define CR14_WARNING_SUBMASK            _BITUL(63 - 39)
  20
  21 #ifndef __ASSEMBLY__
  22
  23 #include <linux/bug.h>
  24
  25 #define __ctl_load(array, low, high) do {                               \
  26         typedef struct { char _[sizeof(array)]; } addrtype;             \
  27                                                                         \
  28         BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
  29         asm volatile(                                                   \
  30                 "       lctlg   %1,%2,%0\n"                             \
  31                 :                                                       \
  32                 : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high)    \
  33                 : "memory");                                            \
  34 } while (0)
  35
  36 #define __ctl_store(array, low, high) do {                              \
  37         typedef struct { char _[sizeof(array)]; } addrtype;             \
  38                                                                         \
  39         BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
  40         asm volatile(                                                   \
  41                 "       stctg   %1,%2,%0\n"                             \
  42                 : "=Q" (*(addrtype *)(&array))                          \
  43                 : "i" (low), "i" (high));                               \
  44 } while (0)
  45
  46 static inline void __ctl_set_bit(unsigned int cr, unsigned int bit)
  47 {
  48         unsigned long reg;
  49
  50         __ctl_store(reg, cr, cr);
  51         reg |= 1UL << bit;
  52         __ctl_load(reg, cr, cr);
  53 }
  54
  55 static inline void __ctl_clear_bit(unsigned int cr, unsigned int bit)
  56 {
  57         unsigned long reg;
  58
  59         __ctl_store(reg, cr, cr);
  60         reg &= ~(1UL << bit);
  61         __ctl_load(reg, cr, cr);
  62 }
  63
  64 void smp_ctl_set_bit(int cr, int bit);
  65 void smp_ctl_clear_bit(int cr, int bit);
  66
  67 union ctlreg0 {
  68         unsigned long val;
  69         struct {
  70                 unsigned long      : 8;
  71                 unsigned long tcx  : 1; /* Transactional-Execution control */
  72                 unsigned long pifo : 1; /* Transactional-Execution Program-
  73                                            Interruption-Filtering Override */
  74                 unsigned long      : 22;
  75                 unsigned long      : 3;
  76                 unsigned long lap  : 1; /* Low-address-protection control */
  77                 unsigned long      : 4;
  78                 unsigned long edat : 1; /* Enhanced-DAT-enablement control */
  79                 unsigned long      : 2;
  80                 unsigned long iep  : 1; /* Instruction-Execution-Protection */
  81                 unsigned long      : 1;
  82                 unsigned long afp  : 1; /* AFP-register control */
  83                 unsigned long vx   : 1; /* Vector enablement control */
  84                 unsigned long      : 7;
  85                 unsigned long sssm : 1; /* Service signal subclass mask */
  86                 unsigned long      : 9;
  87         };
  88 };
  89
  90 union ctlreg2 {
  91         unsigned long val;
  92         struct {
  93                 unsigned long       : 33;
  94                 unsigned long ducto : 25;
  95                 unsigned long       : 1;
  96                 unsigned long gse   : 1;
  97                 unsigned long       : 1;
  98                 unsigned long tds   : 1;
  99                 unsigned long tdc   : 2;
 100         };
 101 };
 102
 103 #ifdef CONFIG_SMP
 104 # define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit)
 105 # define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit)
 106 #else
 107 # define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit)
 108 # define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit)
 109 #endif
 110
 111 #endif /* __ASSEMBLY__ */
 112 #endif /* __ASM_CTL_REG_H */