1/*-
2 * Copyright (c) Peter Wemm
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) Peter Wemm
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
26 * $FreeBSD: stable/11/sys/i386/include/pcpu.h 334152 2018-05-24 13:17:24Z kib $
| 26 * $FreeBSD: stable/11/sys/i386/include/pcpu.h 347568 2019-05-14 17:05:02Z kib $
|
27 */
28
29#ifndef _MACHINE_PCPU_H_
30#define _MACHINE_PCPU_H_
31
32#ifndef _SYS_CDEFS_H_
33#error "sys/cdefs.h is a prerequisite for this file"
34#endif
35
36#include <machine/segments.h>
37#include <machine/tss.h>
38
39#include <sys/_lock.h>
40#include <sys/_mutex.h>
41
42/*
43 * The SMP parts are setup in pmap.c and locore.s for the BSP, and
44 * mp_machdep.c sets up the data for the AP's to "see" when they awake.
45 * The reason for doing it via a struct is so that an array of pointers
46 * to each CPU's data can be set up for things like "check curproc on all
47 * other processors"
48 */
49
50#define PCPU_MD_FIELDS \
51 char pc_monitorbuf[128] __aligned(128); /* cache line */ \
52 struct pcpu *pc_prvspace; /* Self-reference */ \
53 struct pmap *pc_curpmap; \
54 struct i386tss pc_common_tss; \
55 struct segment_descriptor pc_common_tssd; \
56 struct segment_descriptor *pc_tss_gdt; \
57 struct segment_descriptor *pc_fsgs_gdt; \
58 int pc_currentldt; \
59 u_int pc_acpi_id; /* ACPI CPU id */ \
60 u_int pc_apic_id; \
61 int pc_private_tss; /* Flag indicating private tss*/\
62 u_int pc_cmci_mask; /* MCx banks for CMCI */ \
63 u_int pc_vcpu_id; /* Xen vCPU ID */ \
64 struct mtx pc_cmap_lock; \
65 void *pc_cmap_pte1; \
66 void *pc_cmap_pte2; \
67 caddr_t pc_cmap_addr1; \
68 caddr_t pc_cmap_addr2; \
69 vm_offset_t pc_qmap_addr; /* KVA for temporary mappings */\
70 uint32_t pc_smp_tlb_done; /* TLB op acknowledgement */ \
71 uint32_t pc_ibpb_set; \
| 27 */
28
29#ifndef _MACHINE_PCPU_H_
30#define _MACHINE_PCPU_H_
31
32#ifndef _SYS_CDEFS_H_
33#error "sys/cdefs.h is a prerequisite for this file"
34#endif
35
36#include <machine/segments.h>
37#include <machine/tss.h>
38
39#include <sys/_lock.h>
40#include <sys/_mutex.h>
41
42/*
43 * The SMP parts are setup in pmap.c and locore.s for the BSP, and
44 * mp_machdep.c sets up the data for the AP's to "see" when they awake.
45 * The reason for doing it via a struct is so that an array of pointers
46 * to each CPU's data can be set up for things like "check curproc on all
47 * other processors"
48 */
49
50#define PCPU_MD_FIELDS \
51 char pc_monitorbuf[128] __aligned(128); /* cache line */ \
52 struct pcpu *pc_prvspace; /* Self-reference */ \
53 struct pmap *pc_curpmap; \
54 struct i386tss pc_common_tss; \
55 struct segment_descriptor pc_common_tssd; \
56 struct segment_descriptor *pc_tss_gdt; \
57 struct segment_descriptor *pc_fsgs_gdt; \
58 int pc_currentldt; \
59 u_int pc_acpi_id; /* ACPI CPU id */ \
60 u_int pc_apic_id; \
61 int pc_private_tss; /* Flag indicating private tss*/\
62 u_int pc_cmci_mask; /* MCx banks for CMCI */ \
63 u_int pc_vcpu_id; /* Xen vCPU ID */ \
64 struct mtx pc_cmap_lock; \
65 void *pc_cmap_pte1; \
66 void *pc_cmap_pte2; \
67 caddr_t pc_cmap_addr1; \
68 caddr_t pc_cmap_addr2; \
69 vm_offset_t pc_qmap_addr; /* KVA for temporary mappings */\
70 uint32_t pc_smp_tlb_done; /* TLB op acknowledgement */ \
71 uint32_t pc_ibpb_set; \
|
72 char __pad[185]
| 72 void *pc_mds_buf; \
73 void *pc_mds_buf64; \
74 uint32_t pc_pad[12]; \
75 uint8_t pc_mds_tmp[64]; \
76 char __pad[153]
|
73
74#ifdef _KERNEL
75
76#ifdef lint
77
78extern struct pcpu *pcpup;
79
80#define get_pcpu() (pcpup)
81#define PCPU_GET(member) (pcpup->pc_ ## member)
82#define PCPU_ADD(member, val) (pcpup->pc_ ## member += (val))
83#define PCPU_INC(member) PCPU_ADD(member, 1)
84#define PCPU_PTR(member) (&pcpup->pc_ ## member)
85#define PCPU_SET(member, val) (pcpup->pc_ ## member = (val))
86
87#elif defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF)
88
89/*
90 * Evaluates to the byte offset of the per-cpu variable name.
91 */
92#define __pcpu_offset(name) \
93 __offsetof(struct pcpu, name)
94
95/*
96 * Evaluates to the type of the per-cpu variable name.
97 */
98#define __pcpu_type(name) \
99 __typeof(((struct pcpu *)0)->name)
100
101/*
102 * Evaluates to the address of the per-cpu variable name.
103 */
104#define __PCPU_PTR(name) __extension__ ({ \
105 __pcpu_type(name) *__p; \
106 \
107 __asm __volatile("movl %%fs:%1,%0; addl %2,%0" \
108 : "=r" (__p) \
109 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))), \
110 "i" (__pcpu_offset(name))); \
111 \
112 __p; \
113})
114
115/*
116 * Evaluates to the value of the per-cpu variable name.
117 */
118#define __PCPU_GET(name) __extension__ ({ \
119 __pcpu_type(name) __res; \
120 struct __s { \
121 u_char __b[MIN(sizeof(__res), 4)]; \
122 } __s; \
123 \
124 if (sizeof(__res) == 1 || sizeof(__res) == 2 || \
125 sizeof(__res) == 4) { \
126 __asm __volatile("mov %%fs:%1,%0" \
127 : "=r" (__s) \
128 : "m" (*(struct __s *)(__pcpu_offset(name)))); \
129 *(struct __s *)(void *)&__res = __s; \
130 } else { \
131 __res = *__PCPU_PTR(name); \
132 } \
133 __res; \
134})
135
136/*
137 * Adds a value of the per-cpu counter name. The implementation
138 * must be atomic with respect to interrupts.
139 */
140#define __PCPU_ADD(name, val) do { \
141 __pcpu_type(name) __val; \
142 struct __s { \
143 u_char __b[MIN(sizeof(__val), 4)]; \
144 } __s; \
145 \
146 __val = (val); \
147 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \
148 sizeof(__val) == 4) { \
149 __s = *(struct __s *)(void *)&__val; \
150 __asm __volatile("add %1,%%fs:%0" \
151 : "=m" (*(struct __s *)(__pcpu_offset(name))) \
152 : "r" (__s)); \
153 } else \
154 *__PCPU_PTR(name) += __val; \
155} while (0)
156
157/*
158 * Increments the value of the per-cpu counter name. The implementation
159 * must be atomic with respect to interrupts.
160 */
161#define __PCPU_INC(name) do { \
162 CTASSERT(sizeof(__pcpu_type(name)) == 1 || \
163 sizeof(__pcpu_type(name)) == 2 || \
164 sizeof(__pcpu_type(name)) == 4); \
165 if (sizeof(__pcpu_type(name)) == 1) { \
166 __asm __volatile("incb %%fs:%0" \
167 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
168 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
169 } else if (sizeof(__pcpu_type(name)) == 2) { \
170 __asm __volatile("incw %%fs:%0" \
171 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
172 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
173 } else if (sizeof(__pcpu_type(name)) == 4) { \
174 __asm __volatile("incl %%fs:%0" \
175 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
176 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
177 } \
178} while (0)
179
180/*
181 * Sets the value of the per-cpu variable name to value val.
182 */
183#define __PCPU_SET(name, val) do { \
184 __pcpu_type(name) __val; \
185 struct __s { \
186 u_char __b[MIN(sizeof(__val), 4)]; \
187 } __s; \
188 \
189 __val = (val); \
190 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \
191 sizeof(__val) == 4) { \
192 __s = *(struct __s *)(void *)&__val; \
193 __asm __volatile("mov %1,%%fs:%0" \
194 : "=m" (*(struct __s *)(__pcpu_offset(name))) \
195 : "r" (__s)); \
196 } else { \
197 *__PCPU_PTR(name) = __val; \
198 } \
199} while (0)
200
201#define get_pcpu() __extension__ ({ \
202 struct pcpu *__pc; \
203 \
204 __asm __volatile("movl %%fs:%1,%0" \
205 : "=r" (__pc) \
206 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace)))); \
207 __pc; \
208})
209
210#define PCPU_GET(member) __PCPU_GET(pc_ ## member)
211#define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val)
212#define PCPU_INC(member) __PCPU_INC(pc_ ## member)
213#define PCPU_PTR(member) __PCPU_PTR(pc_ ## member)
214#define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val)
215
216#define OFFSETOF_CURTHREAD 0
217#ifdef __clang__
218#pragma clang diagnostic push
219#pragma clang diagnostic ignored "-Wnull-dereference"
220#endif
221static __inline __pure2 struct thread *
222__curthread(void)
223{
224 struct thread *td;
225
226 __asm("movl %%fs:%1,%0" : "=r" (td)
227 : "m" (*(char *)OFFSETOF_CURTHREAD));
228 return (td);
229}
230#ifdef __clang__
231#pragma clang diagnostic pop
232#endif
233#define curthread (__curthread())
234
235#define OFFSETOF_CURPCB 16
236static __inline __pure2 struct pcb *
237__curpcb(void)
238{
239 struct pcb *pcb;
240
241 __asm("movl %%fs:%1,%0" : "=r" (pcb) : "m" (*(char *)OFFSETOF_CURPCB));
242 return (pcb);
243}
244#define curpcb (__curpcb())
245
246#define IS_BSP() (PCPU_GET(cpuid) == 0)
247
248#else /* !lint || defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */
249
250#error "this file needs to be ported to your compiler"
251
252#endif /* lint, etc. */
253
254#endif /* _KERNEL */
255
256#endif /* !_MACHINE_PCPU_H_ */
| 77
78#ifdef _KERNEL
79
80#ifdef lint
81
82extern struct pcpu *pcpup;
83
84#define get_pcpu() (pcpup)
85#define PCPU_GET(member) (pcpup->pc_ ## member)
86#define PCPU_ADD(member, val) (pcpup->pc_ ## member += (val))
87#define PCPU_INC(member) PCPU_ADD(member, 1)
88#define PCPU_PTR(member) (&pcpup->pc_ ## member)
89#define PCPU_SET(member, val) (pcpup->pc_ ## member = (val))
90
91#elif defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF)
92
93/*
94 * Evaluates to the byte offset of the per-cpu variable name.
95 */
96#define __pcpu_offset(name) \
97 __offsetof(struct pcpu, name)
98
99/*
100 * Evaluates to the type of the per-cpu variable name.
101 */
102#define __pcpu_type(name) \
103 __typeof(((struct pcpu *)0)->name)
104
105/*
106 * Evaluates to the address of the per-cpu variable name.
107 */
108#define __PCPU_PTR(name) __extension__ ({ \
109 __pcpu_type(name) *__p; \
110 \
111 __asm __volatile("movl %%fs:%1,%0; addl %2,%0" \
112 : "=r" (__p) \
113 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace))), \
114 "i" (__pcpu_offset(name))); \
115 \
116 __p; \
117})
118
119/*
120 * Evaluates to the value of the per-cpu variable name.
121 */
122#define __PCPU_GET(name) __extension__ ({ \
123 __pcpu_type(name) __res; \
124 struct __s { \
125 u_char __b[MIN(sizeof(__res), 4)]; \
126 } __s; \
127 \
128 if (sizeof(__res) == 1 || sizeof(__res) == 2 || \
129 sizeof(__res) == 4) { \
130 __asm __volatile("mov %%fs:%1,%0" \
131 : "=r" (__s) \
132 : "m" (*(struct __s *)(__pcpu_offset(name)))); \
133 *(struct __s *)(void *)&__res = __s; \
134 } else { \
135 __res = *__PCPU_PTR(name); \
136 } \
137 __res; \
138})
139
140/*
141 * Adds a value of the per-cpu counter name. The implementation
142 * must be atomic with respect to interrupts.
143 */
144#define __PCPU_ADD(name, val) do { \
145 __pcpu_type(name) __val; \
146 struct __s { \
147 u_char __b[MIN(sizeof(__val), 4)]; \
148 } __s; \
149 \
150 __val = (val); \
151 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \
152 sizeof(__val) == 4) { \
153 __s = *(struct __s *)(void *)&__val; \
154 __asm __volatile("add %1,%%fs:%0" \
155 : "=m" (*(struct __s *)(__pcpu_offset(name))) \
156 : "r" (__s)); \
157 } else \
158 *__PCPU_PTR(name) += __val; \
159} while (0)
160
161/*
162 * Increments the value of the per-cpu counter name. The implementation
163 * must be atomic with respect to interrupts.
164 */
165#define __PCPU_INC(name) do { \
166 CTASSERT(sizeof(__pcpu_type(name)) == 1 || \
167 sizeof(__pcpu_type(name)) == 2 || \
168 sizeof(__pcpu_type(name)) == 4); \
169 if (sizeof(__pcpu_type(name)) == 1) { \
170 __asm __volatile("incb %%fs:%0" \
171 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
172 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
173 } else if (sizeof(__pcpu_type(name)) == 2) { \
174 __asm __volatile("incw %%fs:%0" \
175 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
176 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
177 } else if (sizeof(__pcpu_type(name)) == 4) { \
178 __asm __volatile("incl %%fs:%0" \
179 : "=m" (*(__pcpu_type(name) *)(__pcpu_offset(name)))\
180 : "m" (*(__pcpu_type(name) *)(__pcpu_offset(name))));\
181 } \
182} while (0)
183
184/*
185 * Sets the value of the per-cpu variable name to value val.
186 */
187#define __PCPU_SET(name, val) do { \
188 __pcpu_type(name) __val; \
189 struct __s { \
190 u_char __b[MIN(sizeof(__val), 4)]; \
191 } __s; \
192 \
193 __val = (val); \
194 if (sizeof(__val) == 1 || sizeof(__val) == 2 || \
195 sizeof(__val) == 4) { \
196 __s = *(struct __s *)(void *)&__val; \
197 __asm __volatile("mov %1,%%fs:%0" \
198 : "=m" (*(struct __s *)(__pcpu_offset(name))) \
199 : "r" (__s)); \
200 } else { \
201 *__PCPU_PTR(name) = __val; \
202 } \
203} while (0)
204
205#define get_pcpu() __extension__ ({ \
206 struct pcpu *__pc; \
207 \
208 __asm __volatile("movl %%fs:%1,%0" \
209 : "=r" (__pc) \
210 : "m" (*(struct pcpu *)(__pcpu_offset(pc_prvspace)))); \
211 __pc; \
212})
213
214#define PCPU_GET(member) __PCPU_GET(pc_ ## member)
215#define PCPU_ADD(member, val) __PCPU_ADD(pc_ ## member, val)
216#define PCPU_INC(member) __PCPU_INC(pc_ ## member)
217#define PCPU_PTR(member) __PCPU_PTR(pc_ ## member)
218#define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val)
219
220#define OFFSETOF_CURTHREAD 0
221#ifdef __clang__
222#pragma clang diagnostic push
223#pragma clang diagnostic ignored "-Wnull-dereference"
224#endif
225static __inline __pure2 struct thread *
226__curthread(void)
227{
228 struct thread *td;
229
230 __asm("movl %%fs:%1,%0" : "=r" (td)
231 : "m" (*(char *)OFFSETOF_CURTHREAD));
232 return (td);
233}
234#ifdef __clang__
235#pragma clang diagnostic pop
236#endif
237#define curthread (__curthread())
238
239#define OFFSETOF_CURPCB 16
240static __inline __pure2 struct pcb *
241__curpcb(void)
242{
243 struct pcb *pcb;
244
245 __asm("movl %%fs:%1,%0" : "=r" (pcb) : "m" (*(char *)OFFSETOF_CURPCB));
246 return (pcb);
247}
248#define curpcb (__curpcb())
249
250#define IS_BSP() (PCPU_GET(cpuid) == 0)
251
252#else /* !lint || defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE___TYPEOF) */
253
254#error "this file needs to be ported to your compiler"
255
256#endif /* lint, etc. */
257
258#endif /* _KERNEL */
259
260#endif /* !_MACHINE_PCPU_H_ */
|