cpu.h revision 1.28 1 /* $NetBSD: cpu.h,v 1.28 1998/10/07 18:29:26 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. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
41 *
42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94
43 */
44
45 #ifndef _ALPHA_CPU_H_
46 #define _ALPHA_CPU_H_
47
48 /*
49 * Exported definitions unique to Alpha cpu support.
50 */
51
52 #include <machine/frame.h>
53
54 /*
55 * definitions of cpu-dependent requirements
56 * referenced in generic code
57 */
58 #define cpu_wait(p) /* nothing */
59
60 /*
61 * Arguments to hardclock and gatherstats encapsulate the previous
62 * machine state in an opaque clockframe. One the Alpha, we use
63 * what we push on an interrupt (a trapframe).
64 */
65 struct clockframe {
66 struct trapframe cf_tf;
67 };
68 #define CLKF_USERMODE(framep) \
69 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0)
70 #define CLKF_BASEPRI(framep) \
71 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_IPL_MASK) == 0)
72 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC])
73 /*
74 * XXX No way to accurately tell if we were in interrupt mode before taking
75 * clock interrupt.
76 */
77 #define CLKF_INTR(framep) (0)
78
79 /*
80 * Preempt the current process if in interrupt from user mode,
81 * or after the current trap/syscall if in system mode.
82 */
83 #define need_resched() { want_resched = 1; aston(); }
84
85 /*
86 * Give a profiling tick to the current process when the user profiling
87 * buffer pages are invalid. On the hp300, request an ast to send us
88 * through trap, marking the proc as needing a profiling tick.
89 */
90 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
91
92 /*
93 * Notify the current process (p) that it has a signal pending,
94 * process as soon as possible.
95 */
96 #define signotify(p) aston()
97
98 #define aston() (astpending = 1)
99
100 #ifdef _KERNEL
101 u_int64_t astpending; /* need to trap before returning to user mode */
102 u_int64_t want_resched; /* resched() was called */
103 #endif
104
105
106 /*
107 * CTL_MACHDEP definitions.
108 */
109 #define CPU_CONSDEV 1 /* dev_t: console terminal device */
110 #define CPU_ROOT_DEVICE 2 /* string: root device name */
111 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */
112 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */
113 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */
114 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */
115 #define CPU_MAXID 7 /* 6 valid machdep IDs */
116
117 #define CTL_MACHDEP_NAMES { \
118 { 0, 0 }, \
119 { "console_device", CTLTYPE_STRUCT }, \
120 { "root_device", CTLTYPE_STRING }, \
121 { "unaligned_print", CTLTYPE_INT }, \
122 { "unaligned_fix", CTLTYPE_INT }, \
123 { "unaligned_sigbus", CTLTYPE_INT }, \
124 { "booted_kernel", CTLTYPE_STRING }, \
125 }
126
127 #ifdef _KERNEL
128
129 struct pcb;
130 struct proc;
131 struct reg;
132 struct rpb;
133 struct trapframe;
134
135 /* Per-CPU info for handling machine checks, an array of which */
136 /* is allocated early in startup */
137 struct mchkinfo {
138 volatile u_int mc_expected; /* machine check expected */
139 volatile u_int mc_received; /* machine check received */
140 /*
141 * We don't really need more info at this time.
142 */
143 };
144
145 extern int cold;
146 extern struct proc *fpcurproc;
147 extern struct rpb *hwrpb;
148 struct mchkinfo *cpu_mchkinfo __P((void));
149
150 void XentArith __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
151 void XentIF __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
152 void XentInt __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
153 void XentMM __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
154 void XentRestart __P((void)); /* MAGIC */
155 void XentSys __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
156 void XentUna __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */
157 void alpha_init __P((u_long, u_long, u_long, u_long, u_long));
158 int alpha_pa_access __P((u_long));
159 void ast __P((struct trapframe *));
160 int badaddr __P((void *, size_t));
161 int badaddr_read __P((void *, size_t, void *));
162 void child_return __P((struct proc *p));
163 u_int64_t console_restart __P((u_int64_t, u_int64_t, u_int64_t));
164 void do_sir __P((void));
165 void dumpconf __P((void));
166 void exception_return __P((void)); /* MAGIC */
167 void frametoreg __P((struct trapframe *, struct reg *));
168 long fswintrberr __P((void)); /* MAGIC */
169 void init_bootstrap_console __P((void));
170 void init_prom_interface __P((struct rpb *));
171 void interrupt
172 __P((unsigned long, unsigned long, unsigned long, struct trapframe *));
173 void machine_check
174 __P((unsigned long, struct trapframe *, unsigned long, unsigned long));
175 u_int64_t hwrpb_checksum __P((void));
176 void hwrpb_restart_setup __P((void));
177 void regdump __P((struct trapframe *));
178 void regtoframe __P((struct reg *, struct trapframe *));
179 void savectx __P((struct pcb *));
180 void set_iointr __P((void (*)(void *, unsigned long)));
181 void switch_exit __P((struct proc *)); /* MAGIC */
182 void switch_trampoline __P((void)); /* MAGIC */
183 void syscall __P((u_int64_t, struct trapframe *));
184 void trap __P((unsigned long, unsigned long, unsigned long, unsigned long,
185 struct trapframe *));
186 void trap_init __P((void));
187
188 /* Multiprocessor glue; cpu.c */
189 struct cpu_softc;
190 int cpu_iccb_send __P((long, const char *));
191 void cpu_iccb_receive __P((void));
192 void cpu_hatch __P((struct cpu_softc *));
193 void cpu_run_spinup_queue __P((void));
194 void cpu_halt_secondary __P((unsigned long));
195 void cpu_spinup_trampoline __P((void)); /* MAGIC */
196 void cpu_pause __P((unsigned long));
197 void cpu_resume __P((unsigned long));
198
199 #endif /* _KERNEL */
200
201 #endif /* _ALPHA_CPU_H_ */
202