1 /*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * Copyright (c) Peter Wemm <peter@netplex.com.au>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/10/sys/ia64/include/pcpu.h 271239 2014-09-07 21:40:14Z marcel $
28 */
29
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
32
33 #include <sys/sysctl.h>
34 #include <machine/pcb.h>
35
36 struct pcpu_stats {
37 u_long pcs_nasts; /* IPI_AST counter. */
38 u_long pcs_nclks; /* Clock interrupt counter. */
39 u_long pcs_nextints; /* ExtINT counter. */
40 u_long pcs_nhardclocks; /* IPI_HARDCLOCK counter. */
41 u_long pcs_nhighfps; /* IPI_HIGH_FP counter. */
42 u_long pcs_nhwints; /* Hardware int. counter. */
43 u_long pcs_npreempts; /* IPI_PREEMPT counter. */
44 u_long pcs_nrdvs; /* IPI_RENDEZVOUS counter. */
45 u_long pcs_nstops; /* IPI_STOP counter. */
46 u_long pcs_nstrays; /* Stray interrupt counter. */
47 };
48
49 struct pcpu_md {
50 struct pcb pcb; /* Used by IPI_STOP */
51 struct pmap *current_pmap; /* active pmap */
52 vm_offset_t vhpt; /* Address of VHPT */
53 uint64_t lid; /* local CPU ID */
54 uint64_t clock; /* Clock counter. */
55 uint64_t clock_load; /* Clock reload value. */
56 uint32_t clock_mode; /* Clock ET mode */
57 uint32_t awake:1; /* CPU is awake? */
58 struct pcpu_stats stats; /* Interrupt stats. */
59 void *xtrace_buffer;
60 uint64_t xtrace_tail;
61 #ifdef _KERNEL
62 struct sysctl_ctx_list sysctl_ctx;
63 struct sysctl_oid *sysctl_tree;
64 #endif
65 };
66
67 #define PCPU_MD_FIELDS \
68 uint32_t pc_acpi_id; /* ACPI CPU id. */ \
69 struct pcpu_md pc_md; /* MD fields. */ \
70 char __pad[10*128]
71
72 #ifdef _KERNEL
73
74 #include <sys/systm.h>
75
76 struct pcpu;
77
78 register struct pcpu * volatile pcpup __asm__("r13");
79
80 static __inline __pure2 struct thread *
__curthread(void)81 __curthread(void)
82 {
83 struct thread *td;
84
85 __asm("ld8.acq %0=[r13]" : "=r"(td));
86 return (td);
87 }
88 #define curthread (__curthread())
89
90 #define __pcpu_offset(name) __offsetof(struct pcpu, name)
91 #define __pcpu_type(name) __typeof(((struct pcpu *)0)->name)
92
93 #define PCPU_ADD(name, val) \
94 do { \
95 __pcpu_type(pc_ ## name) *nmp; \
96 critical_enter(); \
97 __asm __volatile("add %0=%1,r13;;" : \
98 "=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
99 *nmp += val; \
100 critical_exit(); \
101 } while (0)
102
103 #define PCPU_GET(name) \
104 ({ __pcpu_type(pc_ ## name) *nmp; \
105 __pcpu_type(pc_ ## name) res; \
106 critical_enter(); \
107 __asm __volatile("add %0=%1,r13;;" : \
108 "=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
109 res = *nmp; \
110 critical_exit(); \
111 res; \
112 })
113
114 #define PCPU_INC(member) PCPU_ADD(member, 1)
115
116 #define PCPU_PTR(name) \
117 ({ __pcpu_type(pc_ ## name) *nmp; \
118 __asm __volatile("add %0=%1,r13;;" : \
119 "=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
120 nmp; \
121 })
122
123 #define PCPU_SET(name, val) \
124 do { \
125 __pcpu_type(pc_ ## name) *nmp; \
126 critical_enter(); \
127 __asm __volatile("add %0=%1,r13;;" : \
128 "=r"(nmp) : "i"(__pcpu_offset(pc_ ## name))); \
129 *nmp = val; \
130 critical_exit(); \
131 } while (0)
132
133 #endif /* _KERNEL */
134
135 #endif /* !_MACHINE_PCPU_H_ */
136