1 /* $NetBSD: cpu.h,v 1.108 2023/12/19 00:29:48 kalvisd Exp $ */
2
3 /*
4 * Copyright (c) 1994 Ludd, University of Lule}, Sweden
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef _VAX_CPU_H_
29 #define _VAX_CPU_H_
30
31 #if defined(_KERNEL_OPT)
32 #include "opt_gprof.h"
33 #include "opt_multiprocessor.h"
34 #include "opt_lockdebug.h"
35 #endif
36
37 #define CPU_PRINTFATALTRAPS 1
38 #define CPU_CONSDEV 2
39 #define CPU_BOOTED_DEVICE 3
40 #define CPU_BOOTED_KERNEL 4
41
42 #ifdef _KERNEL
43
44 #include <sys/cdefs.h>
45 #include <sys/queue.h>
46 #include <sys/device_if.h>
47 #include <sys/cpu_data.h>
48
49 #include <machine/mtpr.h>
50 #include <machine/pcb.h>
51 #include <machine/uvax.h>
52 #include <machine/psl.h>
53
54 #define enablertclock()
55
56 /*
57 * All cpu-dependent info is kept in this struct. Pointer to the
58 * struct for the current cpu is set up in locore.c.
59 */
60 struct cpu_info;
61
62 struct cpu_dep {
63 void (*cpu_steal_pages)(void); /* pmap init before mm is on */
64 int (*cpu_mchk)(void *); /* Machine check handling */
65 void (*cpu_memerr)(void); /* Memory subsystem errors */
66 /* Autoconfiguration */
67 void (*cpu_conf)(void);
68 int (*cpu_gettime)(struct timeval *); /* Read cpu clock time */
69 void (*cpu_settime)(struct timeval *); /* Write system time to cpu */
70 short cpu_vups; /* speed of cpu */
71 short cpu_scbsz; /* (estimated) size of SCB */
72 void (*cpu_halt)(void); /* Cpu dependent halt call */
73 void (*cpu_reboot)(int); /* Cpu dependent reboot call */
74 void (*cpu_clrf)(void); /* Clear cold/warm start flags */
75 const char * const *cpu_devs; /* mainbus devices */
76 void (*cpu_attach_cpu)(device_t); /* print CPU info */
77 int cpu_flags;
78 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */
79 };
80
81 #if defined(MULTIPROCESSOR)
82 /*
83 * All cpu-dependent calls for multicpu systems goes here.
84 */
85 struct cpu_mp_dep {
86 void (*cpu_startslave)(struct cpu_info *);
87 void (*cpu_send_ipi)(struct cpu_info *);
88 void (*cpu_cnintr)(void);
89 };
90 /*
91 * NOTE: This is not bit mask, this is bit _number_.
92 */
93 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */
94 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */
95 #define IPI_RUNNING 3 /* This CPU just started to run */
96 #define IPI_TBIA 4 /* Flush the TLB */
97 #define IPI_DDB 5 /* Jump into the DDB loop */
98 #define IPI_XCALL 6 /* Helper for xcall(9) */
99 #define IPI_GENERIC 7 /* Generic ipi(9) call */
100
101 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */
102 #define IPI_DEST_ALL -2 /* Broadcast */
103
104 extern const struct cpu_mp_dep *mp_dep_call;
105 #endif /* defined(MULTIPROCESSOR) */
106
107 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */
108
109 extern const struct cpu_dep *dep_call;
110 /* Holds pointer to current CPU struct. */
111
112 struct clockframe {
113 int pc;
114 int ps;
115 };
116
117 struct cpu_info {
118 /*
119 * Public members.
120 */
121 struct cpu_data ci_data; /* MI per-cpu data */
122 device_t ci_dev; /* device struct for this cpu */
123 int ci_mtx_oldspl; /* saved spl */
124 int ci_mtx_count; /* negative count of mutexes */
125 int ci_cpuid; /* h/w specific cpu id */
126 int ci_want_resched; /* Should change process */
127
128 /*
129 * Private members.
130 */
131 #if defined(__HAVE_FAST_SOFTINTS)
132 lwp_t *ci_softlwps[SOFTINT_COUNT];
133 #endif
134 vaddr_t ci_istack; /* Interrupt stack location */
135 const char *ci_cpustr;
136 int ci_slotid; /* cpu slot */
137 struct lwp *ci_onproc; /* current user LWP / kthread */
138 #if defined(MULTIPROCESSOR)
139 struct lwp *ci_curlwp; /* current lwp (for other cpus) */
140 volatile int ci_flags; /* See below */
141 long ci_ipimsgs; /* Sent IPI bits */
142 struct trapframe *ci_ddb_regs; /* Used by DDB */
143 SIMPLEQ_ENTRY(cpu_info) ci_next; /* next cpu_info */
144 #endif
145 uintptr_t ci_cas_addr; /* current address doing CAS in a RAS */
146 #if defined(GPROF) && defined(MULTIPROCESSOR)
147 struct gmonparam *ci_gmon; /* MI per-cpu GPROF */
148 #endif
149 };
150 #define CI_MASTERCPU 1 /* Set if master CPU */
151 #define CI_RUNNING 2 /* Set when a slave CPU is running */
152 #define CI_STOPPED 4 /* Stopped (in debugger) */
153
154 extern int cpu_printfataltraps;
155
156 #define curcpu() (curlwp->l_cpu + 0)
157 #define curlwp ((struct lwp *)mfpr(PR_SSP))
158 #define cpu_number() (curcpu()->ci_cpuid)
159 #define cpu_need_resched(ci, l, flags) \
160 do { \
161 struct pcb *pcb = lwp_getpcb(curlwp); \
162 __USE(flags); \
163 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \
164 mtpr(AST_OK,PR_ASTLVL); \
165 } while (/*CONSTCOND*/ 0)
166 #define cpu_proc_fork(x, y) do { } while (/*CONSCOND*/0)
167
168 /*
169 * This allows SIMH to recognize the kernel wants to sleep.
170 */
171 static inline void
cpu_idle(void)172 cpu_idle(void)
173 {
174 int ipl = mfpr(PR_IPL);
175 mtpr(1, PR_IPL);
176 mtpr(ipl, PR_IPL);
177 }
178
179 static inline bool
cpu_intr_p(void)180 cpu_intr_p(void)
181 {
182 register_t psl;
183 __asm("movpsl %0" : "=g"(psl));
184 return (psl & PSL_IS) != 0;
185 }
186 #if defined(MULTIPROCESSOR)
187 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU)
188
189 #define CPU_INFO_ITERATOR int __unused
190 #define CPU_INFO_FOREACH(cii, ci) ci = SIMPLEQ_FIRST(&cpus); \
191 ci != NULL; \
192 ci = SIMPLEQ_NEXT(ci, ci_next)
193
194 extern SIMPLEQ_HEAD(cpu_info_qh, cpu_info) cpus;
195 extern char vax_mp_tramp;
196 #endif
197
198 /*
199 * Notify the current process (p) that it has a signal pending,
200 * process as soon as possible.
201 */
202
203 #define cpu_signotify(l) \
204 do { \
205 struct pcb *pcb = lwp_getpcb(l); \
206 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \
207 mtpr(AST_OK,PR_ASTLVL); \
208 } while (/*CONSTCOND*/ 0)
209
210
211 /*
212 * Give a profiling tick to the current process when the user profiling
213 * buffer pages are invalid. On the hp300, request an ast to send us
214 * through trap, marking the proc as needing a profiling tick.
215 */
216 #define cpu_need_proftick(l) \
217 do { \
218 struct pcb *pcb = lwp_getpcb(l); \
219 (l)->l_pflag |= LP_OWEUPC; \
220 pcb->P0LR = (pcb->P0LR & ~AST_MASK) | AST_ON; \
221 mtpr(AST_OK,PR_ASTLVL); \
222 } while (/*CONSTCOND*/ 0)
223
224 /*
225 * This defines the I/O device register space size in pages.
226 */
227 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */
228
229 #define LWP_PC(l) cpu_lwp_pc(l)
230
231 struct buf;
232 struct pte;
233
234 #include <sys/lwp.h>
235
236 /* Some low-level prototypes */
237 #if defined(MULTIPROCESSOR)
238 void cpu_slavesetup(device_t, int);
239 void cpu_boot_secondary_processors(void);
240 void cpu_send_ipi(int, int);
241 void cpu_handle_ipi(void);
242 #endif
243 vaddr_t cpu_lwp_pc(struct lwp *);
244 int badaddr(volatile void *, int);
245 void dumpsys(void);
246 void swapconf(void);
247 void disk_printtype(int, int);
248 void disk_reallymapin(struct buf *, struct pte *, int, int);
249 vaddr_t vax_map_physmem(paddr_t, size_t);
250 void vax_unmap_physmem(vaddr_t, size_t);
251 void ioaccess(vaddr_t, paddr_t, size_t);
252 void iounaccess(vaddr_t, size_t);
253 void findcpu(void);
254 #ifdef DDB
255 int kdbrint(int);
256 #endif
257 #endif /* _KERNEL */
258 #ifdef _STANDALONE
259 void findcpu(void);
260 #endif
261 #endif /* _VAX_CPU_H_ */
262