Annotation of sys/arch/m88k/include/cpu.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cpu.h,v 1.22 2007/05/19 20:34:32 miod Exp $ */
2: /*
3: * Copyright (c) 1996 Nivas Madhur
4: * Copyright (c) 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This software was developed by the Computer Systems Engineering group
8: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9: * contributed to Berkeley.
10: *
11: * All advertising materials mentioning features or use of this software
12: * must display the following acknowledgement:
13: * This product includes software developed by the University of
14: * California, Lawrence Berkeley Laboratory.
15: *
16: * Redistribution and use in source and binary forms, with or without
17: * modification, are permitted provided that the following conditions
18: * are met:
19: * 1. Redistributions of source code must retain the above copyright
20: * notice, this list of conditions and the following disclaimer.
21: * 2. Redistributions in binary form must reproduce the above copyright
22: * notice, this list of conditions and the following disclaimer in the
23: * documentation and/or other materials provided with the distribution.
24: * 3. 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:
41: #ifndef __M88K_CPU_H__
42: #define __M88K_CPU_H__
43:
44: /*
45: * CTL_MACHDEP definitinos.
46: */
47: #define CPU_CONSDEV 1 /* dev_t: console terminal device */
48: #define CPU_MAXID 2 /* number of valid machdep ids */
49:
50: #define CTL_MACHDEP_NAMES { \
51: { 0, 0 }, \
52: { "console_device", CTLTYPE_STRUCT }, \
53: }
54:
55: #ifdef _KERNEL
56:
57: #include <machine/atomic.h>
58: #include <machine/pcb.h>
59: #include <machine/psl.h>
60: #include <machine/intr.h>
61: #include <sys/sched.h>
62:
63: #if defined(MULTIPROCESSOR)
64: #if !defined(MAX_CPUS) || MAX_CPUS > 4
65: #undef MAX_CPUS
66: #define MAX_CPUS 4
67: #endif
68: #else
69: #if !defined(MAX_CPUS)
70: #undef MAX_CPUS
71: #define MAX_CPUS 1
72: #endif
73: #endif
74:
75: #ifndef _LOCORE
76:
77: extern u_int max_cpus;
78:
79: /*
80: * Per-CPU data structure
81: */
82:
83: struct cpu_info {
84: u_int ci_alive; /* nonzero if CPU present */
85:
86: struct proc *ci_curproc; /* current process... */
87: struct pcb *ci_curpcb; /* ...and its pcb */
88:
89: u_int ci_cpuid; /* cpu number */
90: u_int ci_primary; /* set if master cpu */
91: u_int ci_pfsr_i0, ci_pfsr_i1; /* instruction... */
92: u_int ci_pfsr_d0, ci_pfsr_d1; /* ... and data CMMU PFSRs */
93:
94: struct schedstate_percpu ci_schedstate; /* scheduling state */
95: int ci_want_resched; /* need_resched() invoked */
96:
97: struct pcb *ci_idle_pcb; /* idle pcb (and stack) */
98:
99: u_int ci_intrdepth; /* interrupt depth */
100:
101: u_long ci_spin_locks; /* spin locks counter */
102:
103: volatile int ci_ddb_state; /* ddb status */
104: #define CI_DDB_RUNNING 0
105: #define CI_DDB_ENTERDDB 1
106: #define CI_DDB_INDDB 2
107: #define CI_DDB_PAUSE 3
108:
109: volatile int ci_ipi; /* pending ipis */
110: #define CI_IPI_NOTIFY 0x00000001
111: #define CI_IPI_HARDCLOCK 0x00000002
112: #define CI_IPI_STATCLOCK 0x00000004
113: #define CI_IPI_DDB 0x00000008
114: };
115:
116: extern cpuid_t master_cpu;
117: extern struct cpu_info m88k_cpus[MAX_CPUS];
118:
119: #define CPU_INFO_ITERATOR cpuid_t
120: #define CPU_INFO_FOREACH(cii, ci) \
121: for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \
122: if (((ci) = &m88k_cpus[cii])->ci_alive != 0)
123: #define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid)
124:
125: #if defined(MULTIPROCESSOR)
126:
127: #define curcpu() \
128: ({ \
129: struct cpu_info *cpuptr; \
130: \
131: __asm__ __volatile__ ("ldcr %0, cr17" : "=r" (cpuptr)); \
132: cpuptr; \
133: })
134:
135: #define CPU_IS_PRIMARY(ci) ((ci)->ci_primary != 0)
136:
137: void cpu_boot_secondary_processors(void);
138: void m88k_send_ipi(int, cpuid_t);
139: void m88k_broadcast_ipi(int);
140:
141: #else /* MULTIPROCESSOR */
142:
143: #define curcpu() (&m88k_cpus[0])
144: #define CPU_IS_PRIMARY(ci) 1
145:
146: #endif /* MULTIPROCESSOR */
147:
148: void set_cpu_number(cpuid_t);
149:
150: /*
151: * The md code may hardcode this in some very specific situations.
152: */
153: #if !defined(cpu_number)
154: #define cpu_number() curcpu()->ci_cpuid
155: #endif
156:
157: #define curpcb curcpu()->ci_curpcb
158:
159: #endif /* _LOCORE */
160:
161: /*
162: * definitions of cpu-dependent requirements
163: * referenced in generic code
164: */
165: #define cpu_exec(p) do { /* nothing */ } while (0)
166: #define cpu_wait(p) do { /* nothing */ } while (0)
167:
168: #if defined(MULTIPROCESSOR)
169: #include <sys/lock.h>
170: #include <sys/mplock.h>
171: #endif
172:
173: /*
174: * Arguments to hardclock and gatherstats encapsulate the previous
175: * machine state in an opaque clockframe. CLKF_INTR is only valid
176: * if the process is in kernel mode. Clockframe is really trapframe,
177: * so pointer to clockframe can be safely cast into a pointer to
178: * trapframe.
179: */
180: struct clockframe {
181: struct trapframe tf;
182: };
183:
184: #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0)
185: #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR)
186: #define CLKF_INTR(framep) \
187: (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1)
188:
189: /*
190: * Get interrupt glue.
191: */
192: #include <machine/intr.h>
193:
194: #define SIR_NET 0x01
195: #define SIR_CLOCK 0x02
196:
197: extern unsigned int ssir;
198: #define setsoftint(x) atomic_setbits_int(&ssir, x)
199: #define setsoftnet() setsoftint(SIR_NET)
200: #define setsoftclock() setsoftint(SIR_CLOCK)
201:
202: #define aston(p) ((p)->p_md.md_astpending = 1)
203:
204: /*
205: * This is used during profiling to integrate system time.
206: */
207: #define PC_REGS(regs) \
208: (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \
209: ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \
210: ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \
211: (regs)->sfip & FIP_ADDR)))
212: #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf))
213:
214: /*
215: * Preempt the current process if in interrupt from user mode,
216: * or after the current trap/syscall if in system mode.
217: */
218: #define need_resched(ci) \
219: do { \
220: ci->ci_want_resched = 1; \
221: if (ci->ci_curproc != NULL) \
222: aston(ci->ci_curproc); \
223: } while (0)
224:
225: /*
226: * Give a profiling tick to the current process when the user profiling
227: * buffer pages are invalid. On the m88k, request an ast to send us
228: * through trap(), marking the proc as needing a profiling tick.
229: */
230: #define need_proftick(p) aston(p)
231:
232: void signotify(struct proc *);
233:
234: /*
235: * switchframe - should be double word aligned.
236: */
237: struct switchframe {
238: u_int sf_pc; /* pc */
239: void *sf_proc; /* proc pointer */
240: };
241:
242: int badaddr(vaddr_t addr, int size);
243:
244: #endif /* _KERNEL */
245: #endif /* __M88K_CPU_H__ */
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