1 /* $NetBSD: alpha.h,v 1.47 2021/07/23 03:50:32 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1982, 1990, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
37 *
38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94
39 */
40
41 #ifndef _ALPHA_H_
42 #define _ALPHA_H_
43
44 typedef union alpha_f_float {
45 uint32_t i;
46 uint32_t frac_hi: 7,
47 exp: 8,
48 sign: 1,
49 frac_lo: 16;
50 } f_float;
51
52 typedef union alpha_s_float {
53 uint32_t i;
54 uint32_t frac: 23,
55 exp: 8,
56 sign: 1;
57 } s_float;
58
59 typedef union alpha_t_float {
60 uint64_t i;
61 uint64_t frac: 52,
62 exp: 11,
63 sign: 1;
64 } t_float;
65
66 #ifdef _KERNEL
67
68 #include <sys/bus.h>
69
70 #include <sys/pcu.h>
71
72 struct pcb;
73 struct lwp;
74 struct reg;
75 struct rpb;
76 struct trapframe;
77
78 extern bool alpha_is_qemu;
79 extern int alpha_use_cctr;
80 extern u_long cpu_implver; /* from IMPLVER instruction */
81 extern u_long cpu_amask; /* from AMASK instruction */
82 extern int bootdev_debug;
83 extern int alpha_fp_sync_complete;
84 extern int alpha_fp_complete_debug;
85 extern int alpha_unaligned_print, alpha_unaligned_fix, alpha_unaligned_sigbus;
86 extern void (*alpha_delay_fn)(unsigned long);
87
88 void XentArith(uint64_t, uint64_t, uint64_t); /* MAGIC */
89 void XentIF(uint64_t, uint64_t, uint64_t); /* MAGIC */
90 void XentInt(uint64_t, uint64_t, uint64_t); /* MAGIC */
91 void XentMM(uint64_t, uint64_t, uint64_t); /* MAGIC */
92 void XentRestart(void); /* MAGIC */
93 void XentSys(uint64_t, uint64_t, uint64_t); /* MAGIC */
94 void XentUna(uint64_t, uint64_t, uint64_t); /* MAGIC */
95 void alpha_init(u_long, u_long, u_long, u_long, u_long);
96 void alpha_page_physload_sheltered(u_long, u_long, u_long, u_long);
97 void ast(struct trapframe *);
98 int badaddr(void *, size_t);
99 int badaddr_read(void *, size_t, void *);
100 uint64_t console_restart(struct trapframe *);
101 void do_sir(void);
102 void exception_return(void); /* MAGIC */
103 void alpha_kthread_backstop(void); /* MAGIC */
104 void frametoreg(const struct trapframe *, struct reg *);
105 void init_bootstrap_console(void);
106 void init_prom_interface(unsigned long, struct rpb *);
107 void interrupt(unsigned long, unsigned long, unsigned long,
108 struct trapframe *);
109 void machine_check(unsigned long, struct trapframe *, unsigned long,
110 unsigned long);
111 uint64_t hwrpb_checksum(void);
112 void hwrpb_restart_setup(void);
113 void regdump(struct trapframe *);
114 void regtoframe(const struct reg *, struct trapframe *);
115 void savectx(struct pcb *);
116 void trap(unsigned long, unsigned long, unsigned long, unsigned long,
117 struct trapframe *);
118 void trap_init(void);
119 void enable_nsio_ide(bus_space_tag_t);
120
121 extern const pcu_ops_t fpu_ops;
122
123 void fpu_state_load(struct lwp *, u_int);
124 void fpu_state_save(struct lwp *);
125 void fpu_state_release(struct lwp *);
126
127 static __inline bool
fpu_valid_p(struct lwp * l)128 fpu_valid_p(struct lwp *l)
129 {
130 return pcu_valid_p(&fpu_ops, l);
131 }
132
133 static __inline void
fpu_load(void)134 fpu_load(void)
135 {
136 pcu_load(&fpu_ops);
137 }
138
139 static __inline void
fpu_save(lwp_t * l)140 fpu_save(lwp_t *l)
141 {
142 pcu_save(&fpu_ops, l);
143 }
144
145 static __inline void
fpu_discard(lwp_t * l,bool valid_p)146 fpu_discard(lwp_t *l, bool valid_p)
147 {
148 pcu_discard(&fpu_ops, l, valid_p);
149 }
150
151 void alpha_patch(bool);
152
153 /* Multiprocessor glue; cpu.c */
154
155 struct cpu_info;
156 int cpu_iccb_send(long, const char *);
157 void cpu_iccb_receive(void);
158 void cpu_hatch(struct cpu_info *);
159 void cpu_halt(void) __attribute__((__noreturn__));
160 void cpu_spinup_trampoline(void); /* MAGIC */
161 void cpu_pause(unsigned long);
162 void cpu_resume(unsigned long);
163 #if defined(DDB)
164 void cpu_debug_dump(void);
165 #endif
166
167 /* IEEE and VAX FP completion */
168
169 void alpha_sts(int, s_float *); /* MAGIC */
170 void alpha_stt(int, t_float *); /* MAGIC */
171 void alpha_lds(int, s_float *); /* MAGIC */
172 void alpha_ldt(int, t_float *); /* MAGIC */
173
174 uint64_t alpha_read_fpcr(void); /* MAGIC */
175 void alpha_write_fpcr(uint64_t); /* MAGIC */
176
177 uint64_t alpha_read_fp_c(struct lwp *);
178 void alpha_write_fp_c(struct lwp *, uint64_t);
179
180 int alpha_fp_complete(u_long, u_long, struct lwp *, uint64_t *);
181 int alpha_fp_complete_at(u_long, struct lwp *, uint64_t *);
182
183 /* Security sensitive rate limiting printf */
184
185 void rlprintf(struct timeval *t, const char *fmt, ...);
186
187 #endif /* _KERNEL */
188 #endif /* _ALPHA_H_ */
189