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cpu.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_CPU_H
6#define SPA_CPU_H
7
8#ifdef __cplusplus
9 extern "C" {
10#endif
11
12#include <stdarg.h>
13#include <errno.h>
14
15#include <spa/utils/defs.h>
16#include <spa/utils/hook.h>
17
18#ifndef SPA_API_CPU
19 #ifdef SPA_API_IMPL
20 #define SPA_API_CPU SPA_API_IMPL
21 #else
22 #define SPA_API_CPU static inline
23 #endif
24#endif
25
29
34
38#define SPA_TYPE_INTERFACE_CPU SPA_TYPE_INFO_INTERFACE_BASE "CPU"
39
40#define SPA_VERSION_CPU 0
41 struct spa_cpu { struct spa_interface iface; };
42
43/* x86 specific */
44#define SPA_CPU_FLAG_MMX (1<<0)
45#define SPA_CPU_FLAG_MMXEXT (1<<1)
46#define SPA_CPU_FLAG_3DNOW (1<<2)
47#define SPA_CPU_FLAG_SSE (1<<3)
48#define SPA_CPU_FLAG_SSE2 (1<<4)
49#define SPA_CPU_FLAG_3DNOWEXT (1<<5)
50#define SPA_CPU_FLAG_SSE3 (1<<6)
51#define SPA_CPU_FLAG_SSSE3 (1<<7)
52#define SPA_CPU_FLAG_SSE41 (1<<8)
53#define SPA_CPU_FLAG_SSE42 (1<<9)
54#define SPA_CPU_FLAG_AESNI (1<<10)
55#define SPA_CPU_FLAG_AVX (1<<11)
56#define SPA_CPU_FLAG_XOP (1<<12)
57#define SPA_CPU_FLAG_FMA4 (1<<13)
58#define SPA_CPU_FLAG_CMOV (1<<14)
59#define SPA_CPU_FLAG_AVX2 (1<<15)
60#define SPA_CPU_FLAG_FMA3 (1<<16)
61#define SPA_CPU_FLAG_BMI1 (1<<17)
62#define SPA_CPU_FLAG_BMI2 (1<<18)
63#define SPA_CPU_FLAG_AVX512 (1<<19)
64#define SPA_CPU_FLAG_SLOW_UNALIGNED (1<<20)
65
66/* PPC specific */
67#define SPA_CPU_FLAG_ALTIVEC (1<<0)
68#define SPA_CPU_FLAG_VSX (1<<1)
69#define SPA_CPU_FLAG_POWER8 (1<<2)
70
71/* ARM specific */
72#define SPA_CPU_FLAG_ARMV5TE (1 << 0)
73#define SPA_CPU_FLAG_ARMV6 (1 << 1)
74#define SPA_CPU_FLAG_ARMV6T2 (1 << 2)
75#define SPA_CPU_FLAG_VFP (1 << 3)
76#define SPA_CPU_FLAG_VFPV3 (1 << 4)
77#define SPA_CPU_FLAG_NEON (1 << 5)
78#define SPA_CPU_FLAG_ARMV8 (1 << 6)
79
80/* RISCV specific */
81#define SPA_CPU_FLAG_RISCV_V (1 << 0)
82
83#define SPA_CPU_FORCE_AUTODETECT ((uint32_t)-1)
84
85#define SPA_CPU_VM_NONE (0)
86#define SPA_CPU_VM_OTHER (1 << 0)
87#define SPA_CPU_VM_KVM (1 << 1)
88#define SPA_CPU_VM_QEMU (1 << 2)
89#define SPA_CPU_VM_BOCHS (1 << 3)
90#define SPA_CPU_VM_XEN (1 << 4)
91#define SPA_CPU_VM_UML (1 << 5)
92#define SPA_CPU_VM_VMWARE (1 << 6)
93#define SPA_CPU_VM_ORACLE (1 << 7)
94#define SPA_CPU_VM_MICROSOFT (1 << 8)
95#define SPA_CPU_VM_ZVM (1 << 9)
96#define SPA_CPU_VM_PARALLELS (1 << 10)
97#define SPA_CPU_VM_BHYVE (1 << 11)
98#define SPA_CPU_VM_QNX (1 << 12)
99#define SPA_CPU_VM_ACRN (1 << 13)
100#define SPA_CPU_VM_POWERVM (1 << 14)
101
102 SPA_API_CPU const char *spa_cpu_vm_type_to_string(uint32_t vm_type)
103{
104 switch(vm_type) {
105 case SPA_CPU_VM_NONE:
106 return NULL;
107 case SPA_CPU_VM_KVM:
108 return "kvm";
109 case SPA_CPU_VM_QEMU:
110 return "qemu";
111 case SPA_CPU_VM_BOCHS:
112 return "bochs";
113 case SPA_CPU_VM_XEN:
114 return "xen";
115 case SPA_CPU_VM_UML:
116 return "uml";
117 case SPA_CPU_VM_VMWARE:
118 return "vmware";
119 case SPA_CPU_VM_ORACLE:
120 return "oracle";
121 case SPA_CPU_VM_MICROSOFT:
122 return "microsoft";
123 case SPA_CPU_VM_ZVM:
124 return "zvm";
125 case SPA_CPU_VM_PARALLELS:
126 return "parallels";
127 case SPA_CPU_VM_BHYVE:
128 return "bhyve";
129 case SPA_CPU_VM_QNX:
130 return "qnx";
131 case SPA_CPU_VM_ACRN:
132 return "acrn";
133 case SPA_CPU_VM_POWERVM:
134 return "powervm";
135 case SPA_CPU_VM_OTHER:
136 return "other";
137 default:
138 return "unknown";
139 }
140}
141
145 struct spa_cpu_methods {
148#define SPA_VERSION_CPU_METHODS 2
149 uint32_t version;
150
152 uint32_t (*get_flags) (void *object);
153
155 int (*force_flags) (void *object, uint32_t flags);
156
158 uint32_t (*get_count) (void *object);
159
160 /** get maximum required alignment of data */
161 uint32_t (*get_max_align) (void *object);
162
163 /* check if running in a VM. Since:1 */
164 uint32_t (*get_vm_type) (void *object);
165
166 /* denormals will be handled as zero, either with FTZ or DAZ.
167 * Since:2 */
168 int (*zero_denormals) (void *object, bool enable);
169};
170
171 SPA_API_CPU uint32_t spa_cpu_get_flags(struct spa_cpu *c)
172{
173 return spa_api_method_r(uint32_t, 0, spa_cpu, &c->iface, get_flags, 0);
174}
175 SPA_API_CPU int spa_cpu_force_flags(struct spa_cpu *c, uint32_t flags)
176{
177 return spa_api_method_r(int, -ENOTSUP, spa_cpu, &c->iface, force_flags, 0, flags);
178}
179 SPA_API_CPU uint32_t spa_cpu_get_count(struct spa_cpu *c)
180{
181 return spa_api_method_r(uint32_t, 0, spa_cpu, &c->iface, get_count, 0);
182}
183 SPA_API_CPU uint32_t spa_cpu_get_max_align(struct spa_cpu *c)
184{
185 return spa_api_method_r(uint32_t, 0, spa_cpu, &c->iface, get_max_align, 0);
186}
187 SPA_API_CPU uint32_t spa_cpu_get_vm_type(struct spa_cpu *c)
188{
189 return spa_api_method_r(uint32_t, 0, spa_cpu, &c->iface, get_vm_type, 1);
190}
191 SPA_API_CPU int spa_cpu_zero_denormals(struct spa_cpu *c, bool enable)
192{
193 return spa_api_method_r(int, -ENOTSUP, spa_cpu, &c->iface, zero_denormals, 2, enable);
194}
195
197#define SPA_KEY_CPU_FORCE "cpu.force"
198#define SPA_KEY_CPU_VM_TYPE "cpu.vm.type"
199#define SPA_KEY_CPU_ZERO_DENORMALS "cpu.zero.denormals"
200
203 */
204
205#ifdef __cplusplus
206} /* extern "C" */
207#endif
208
209#endif /* SPA_CPU_H */
SPA_API_CPU
#define SPA_API_CPU
Definition cpu.h:29
defs.h
spa/utils/defs.h
SPA_CPU_VM_POWERVM
#define SPA_CPU_VM_POWERVM
Definition cpu.h:158
SPA_CPU_VM_OTHER
#define SPA_CPU_VM_OTHER
Definition cpu.h:130
spa_cpu_zero_denormals
SPA_API_CPU int spa_cpu_zero_denormals(struct spa_cpu *c, bool enable)
Definition cpu.h:250
SPA_CPU_VM_PARALLELS
#define SPA_CPU_VM_PARALLELS
Definition cpu.h:150
SPA_CPU_VM_QNX
#define SPA_CPU_VM_QNX
Definition cpu.h:154
spa_cpu_get_count
SPA_API_CPU uint32_t spa_cpu_get_count(struct spa_cpu *c)
Definition cpu.h:238
spa_cpu_get_max_align
SPA_API_CPU uint32_t spa_cpu_get_max_align(struct spa_cpu *c)
Definition cpu.h:242
SPA_CPU_VM_VMWARE
#define SPA_CPU_VM_VMWARE
Definition cpu.h:142
SPA_CPU_VM_ORACLE
#define SPA_CPU_VM_ORACLE
Definition cpu.h:144
spa_cpu_force_flags
SPA_API_CPU int spa_cpu_force_flags(struct spa_cpu *c, uint32_t flags)
Definition cpu.h:234
spa_cpu_vm_type_to_string
SPA_API_CPU const char * spa_cpu_vm_type_to_string(uint32_t vm_type)
Definition cpu.h:160
SPA_CPU_VM_MICROSOFT
#define SPA_CPU_VM_MICROSOFT
Definition cpu.h:146
SPA_CPU_VM_XEN
#define SPA_CPU_VM_XEN
Definition cpu.h:138
SPA_CPU_VM_KVM
#define SPA_CPU_VM_KVM
Definition cpu.h:132
spa_cpu_get_flags
SPA_API_CPU uint32_t spa_cpu_get_flags(struct spa_cpu *c)
Definition cpu.h:230
SPA_CPU_VM_ZVM
#define SPA_CPU_VM_ZVM
Definition cpu.h:148
SPA_CPU_VM_BHYVE
#define SPA_CPU_VM_BHYVE
Definition cpu.h:152
SPA_CPU_VM_UML
#define SPA_CPU_VM_UML
Definition cpu.h:140
SPA_CPU_VM_BOCHS
#define SPA_CPU_VM_BOCHS
Definition cpu.h:136
spa_cpu_get_vm_type
SPA_API_CPU uint32_t spa_cpu_get_vm_type(struct spa_cpu *c)
Definition cpu.h:246
SPA_CPU_VM_NONE
#define SPA_CPU_VM_NONE
Definition cpu.h:128
SPA_CPU_VM_QEMU
#define SPA_CPU_VM_QEMU
Definition cpu.h:134
SPA_CPU_VM_ACRN
#define SPA_CPU_VM_ACRN
Definition cpu.h:156
spa_api_method_r
#define spa_api_method_r(rtype, def, type, o, method, version,...)
Definition hook.h:291
hook.h
spa/utils/hook.h
spa_cpu_methods
methods
Definition cpu.h:203
spa_cpu_methods::get_max_align
uint32_t(* get_max_align)(void *object)
get maximum required alignment of data
Definition cpu.h:220
spa_cpu_methods::force_flags
int(* force_flags)(void *object, uint32_t flags)
force CPU flags, use SPA_CPU_FORCE_AUTODETECT to autodetect CPU flags
Definition cpu.h:214
spa_cpu_methods::get_count
uint32_t(* get_count)(void *object)
get number of CPU cores
Definition cpu.h:217
spa_cpu_methods::get_flags
uint32_t(* get_flags)(void *object)
get CPU flags
Definition cpu.h:211
spa_cpu_methods::zero_denormals
int(* zero_denormals)(void *object, bool enable)
Definition cpu.h:227
spa_cpu_methods::get_vm_type
uint32_t(* get_vm_type)(void *object)
Definition cpu.h:223
spa_cpu_methods::version
uint32_t version
Definition cpu.h:208
spa_cpu
Definition cpu.h:50
spa_cpu::iface
struct spa_interface iface
Definition cpu.h:50
spa_interface
Definition hook.h:148