projects/linux·blob master · refs

187 lines · 5.0 KiB

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 __ASSEMBLER__
8
9extern 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) \
19extern 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) \
31extern 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) \
42extern 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) \
54extern 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) \
67extern 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
120static inline unsigned long
121qemu_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
134static inline unsigned long
135qemu_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
148static inline void
149qemu_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
160static inline void
161qemu_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
172static inline unsigned long
173qemu_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 /* !__ASSEMBLER__ */
187#endif /* __ALPHA_PAL_H */