arch/alpha/include/asm/pal.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ALPHA_PAL_H
   3 #define __ALPHA_PAL_H
   4
   5 #include <uapi/asm/pal.h>
   6
   7 #ifndef __ASSEMBLY__
   8
   9 extern void halt(void) __attribute__((noreturn));
  10 #define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt))
  11
  12 #define imb() \
  13 __asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")
  14
  15 #define draina() \
  16 __asm__ __volatile__ ("call_pal %0 #draina" : : "i" (PAL_draina) : "memory")
  17
  18 #define __CALL_PAL_R0(NAME, TYPE)                               \
  19 extern inline TYPE NAME(void)                                   \
  20 {                                                               \
  21         register TYPE __r0 __asm__("$0");                       \
  22         __asm__ __volatile__(                                   \
  23                 "call_pal %1 # " #NAME                          \
  24                 :"=r" (__r0)                                    \
  25                 :"i" (PAL_ ## NAME)                             \
  26                 :"$1", "$16", "$22", "$23", "$24", "$25");      \
  27         return __r0;                                            \
  28 }
  29
  30 #define __CALL_PAL_W1(NAME, TYPE0)                              \
  31 extern inline void NAME(TYPE0 arg0)                             \
  32 {                                                               \
  33         register TYPE0 __r16 __asm__("$16") = arg0;             \
  34         __asm__ __volatile__(                                   \
  35                 "call_pal %1 # "#NAME                           \
  36                 : "=r"(__r16)                                   \
  37                 : "i"(PAL_ ## NAME), "0"(__r16)                 \
  38                 : "$1", "$22", "$23", "$24", "$25");            \
  39 }
  40
  41 #define __CALL_PAL_W2(NAME, TYPE0, TYPE1)                       \
  42 extern inline void NAME(TYPE0 arg0, TYPE1 arg1)                 \
  43 {                                                               \
  44         register TYPE0 __r16 __asm__("$16") = arg0;             \
  45         register TYPE1 __r17 __asm__("$17") = arg1;             \
  46         __asm__ __volatile__(                                   \
  47                 "call_pal %2 # "#NAME                           \
  48                 : "=r"(__r16), "=r"(__r17)                      \
  49                 : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17)     \
  50                 : "$1", "$22", "$23", "$24", "$25");            \
  51 }
  52
  53 #define __CALL_PAL_RW1(NAME, RTYPE, TYPE0)                      \
  54 extern inline RTYPE NAME(TYPE0 arg0)                            \
  55 {                                                               \
  56         register RTYPE __r0 __asm__("$0");                      \
  57         register TYPE0 __r16 __asm__("$16") = arg0;             \
  58         __asm__ __volatile__(                                   \
  59                 "call_pal %2 # "#NAME                           \
  60                 : "=r"(__r16), "=r"(__r0)                       \
  61                 : "i"(PAL_ ## NAME), "0"(__r16)                 \
  62                 : "$1", "$22", "$23", "$24", "$25");            \
  63         return __r0;                                            \
  64 }
  65
  66 #define __CALL_PAL_RW2(NAME, RTYPE, TYPE0, TYPE1)               \
  67 extern inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1)                \
  68 {                                                               \
  69         register RTYPE __r0 __asm__("$0");                      \
  70         register TYPE0 __r16 __asm__("$16") = arg0;             \
  71         register TYPE1 __r17 __asm__("$17") = arg1;             \
  72         __asm__ __volatile__(                                   \
  73                 "call_pal %3 # "#NAME                           \
  74                 : "=r"(__r16), "=r"(__r17), "=r"(__r0)          \
  75                 : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17)     \
  76                 : "$1", "$22", "$23", "$24", "$25");            \
  77         return __r0;                                            \
  78 }
  79
  80 __CALL_PAL_W1(cflush, unsigned long);
  81 __CALL_PAL_R0(rdmces, unsigned long);
  82 __CALL_PAL_R0(rdps, unsigned long);
  83 __CALL_PAL_R0(rdusp, unsigned long);
  84 __CALL_PAL_RW1(swpipl, unsigned long, unsigned long);
  85 __CALL_PAL_R0(whami, unsigned long);
  86 __CALL_PAL_W2(wrent, void*, unsigned long);
  87 __CALL_PAL_W1(wripir, unsigned long);
  88 __CALL_PAL_W1(wrkgp, unsigned long);
  89 __CALL_PAL_W1(wrmces, unsigned long);
  90 __CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long);
  91 __CALL_PAL_W1(wrusp, unsigned long);
  92 __CALL_PAL_W1(wrvptptr, unsigned long);
  93 __CALL_PAL_RW1(wtint, unsigned long, unsigned long);
  94
  95 /*
  96  * TB routines..
  97  */
  98 #define __tbi(nr,arg,arg1...)                                   \
  99 ({                                                              \
 100         register unsigned long __r16 __asm__("$16") = (nr);     \
 101         register unsigned long __r17 __asm__("$17"); arg;       \
 102         __asm__ __volatile__(                                   \
 103                 "call_pal %3 #__tbi"                            \
 104                 :"=r" (__r16),"=r" (__r17)                      \
 105                 :"0" (__r16),"i" (PAL_tbi) ,##arg1              \
 106                 :"$0", "$1", "$22", "$23", "$24", "$25");       \
 107 })
 108
 109 #define tbi(x,y)        __tbi(x,__r17=(y),"1" (__r17))
 110 #define tbisi(x)        __tbi(1,__r17=(x),"1" (__r17))
 111 #define tbisd(x)        __tbi(2,__r17=(x),"1" (__r17))
 112 #define tbis(x)         __tbi(3,__r17=(x),"1" (__r17))
 113 #define tbiap()         __tbi(-1, /* no second argument */)
 114 #define tbia()          __tbi(-2, /* no second argument */)
 115
 116 /*
 117  * QEMU Cserv routines..
 118  */
 119
 120 static inline unsigned long
 121 qemu_get_walltime(void)
 122 {
 123         register unsigned long v0 __asm__("$0");
 124         register unsigned long a0 __asm__("$16") = 3;
 125
 126         asm("call_pal %2 # cserve get_time"
 127             : "=r"(v0), "+r"(a0)
 128             : "i"(PAL_cserve)
 129             : "$17", "$18", "$19", "$20", "$21");
 130
 131         return v0;
 132 }
 133
 134 static inline unsigned long
 135 qemu_get_alarm(void)
 136 {
 137         register unsigned long v0 __asm__("$0");
 138         register unsigned long a0 __asm__("$16") = 4;
 139
 140         asm("call_pal %2 # cserve get_alarm"
 141             : "=r"(v0), "+r"(a0)
 142             : "i"(PAL_cserve)
 143             : "$17", "$18", "$19", "$20", "$21");
 144
 145         return v0;
 146 }
 147
 148 static inline void
 149 qemu_set_alarm_rel(unsigned long expire)
 150 {
 151         register unsigned long a0 __asm__("$16") = 5;
 152         register unsigned long a1 __asm__("$17") = expire;
 153
 154         asm volatile("call_pal %2 # cserve set_alarm_rel"
 155                      : "+r"(a0), "+r"(a1)
 156                      : "i"(PAL_cserve)
 157                      : "$0", "$18", "$19", "$20", "$21");
 158 }
 159
 160 static inline void
 161 qemu_set_alarm_abs(unsigned long expire)
 162 {
 163         register unsigned long a0 __asm__("$16") = 6;
 164         register unsigned long a1 __asm__("$17") = expire;
 165
 166         asm volatile("call_pal %2 # cserve set_alarm_abs"
 167                      : "+r"(a0), "+r"(a1)
 168                      : "i"(PAL_cserve)
 169                      : "$0", "$18", "$19", "$20", "$21");
 170 }
 171
 172 static inline unsigned long
 173 qemu_get_vmtime(void)
 174 {
 175         register unsigned long v0 __asm__("$0");
 176         register unsigned long a0 __asm__("$16") = 7;
 177
 178         asm("call_pal %2 # cserve get_time"
 179             : "=r"(v0), "+r"(a0)
 180             : "i"(PAL_cserve)
 181             : "$17", "$18", "$19", "$20", "$21");
 182
 183         return v0;
 184 }
 185
 186 #endif /* !__ASSEMBLY__ */
 187 #endif /* __ALPHA_PAL_H */