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msi: Guard msi/msix_write_config with msi_present
[qemu.git] / cache-utils.c
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902b3d5c 1#include "cache-utils.h"
2
e58ffeb3 3#if defined(_ARCH_PPC)
902b3d5c 4struct qemu_cache_conf qemu_cache_conf = {
5 .dcache_bsize = 16,
6 .icache_bsize = 16
7};
8
9#if defined _AIX
10#include <sys/systemcfg.h>
11
12static void ppc_init_cacheline_sizes(void)
13{
14 qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
15 qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
16}
17
18#elif defined __linux__
4710036a 19
20#define QEMU_AT_NULL 0
21#define QEMU_AT_DCACHEBSIZE 19
22#define QEMU_AT_ICACHEBSIZE 20
902b3d5c 23
24static void ppc_init_cacheline_sizes(char **envp)
25{
26 unsigned long *auxv;
27
28 while (*envp++);
29
4710036a 30 for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) {
902b3d5c 31 switch (*auxv) {
807d5170 32 case QEMU_AT_DCACHEBSIZE: qemu_cache_conf.dcache_bsize = auxv[1]; break;
33 case QEMU_AT_ICACHEBSIZE: qemu_cache_conf.icache_bsize = auxv[1]; break;
902b3d5c 34 default: break;
35 }
36 }
37}
38
39#elif defined __APPLE__
7344da06 40#include <stdio.h>
902b3d5c 41#include <sys/types.h>
42#include <sys/sysctl.h>
43
44static void ppc_init_cacheline_sizes(void)
45{
46 size_t len;
47 unsigned cacheline;
48 int name[2] = { CTL_HW, HW_CACHELINE };
49
7344da06 50 len = sizeof(cacheline);
902b3d5c 51 if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
52 perror("sysctl CTL_HW HW_CACHELINE failed");
53 } else {
54 qemu_cache_conf.dcache_bsize = cacheline;
55 qemu_cache_conf.icache_bsize = cacheline;
56 }
57}
58#endif
59
e4ee916d 60#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
4836a2b0 61#include <errno.h>
e4ee916d 62#include <stdio.h>
4836a2b0
JL
63#include <stdlib.h>
64#include <string.h>
e4ee916d
JL
65#include <sys/types.h>
66#include <sys/sysctl.h>
67
68static void ppc_init_cacheline_sizes(void)
69{
70 size_t len = 4;
71 unsigned cacheline;
72
73 if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
74 fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
75 strerror(errno));
76 exit(1);
77 }
78
79 qemu_cache_conf.dcache_bsize = cacheline;
80 qemu_cache_conf.icache_bsize = cacheline;
81}
12b6278f 82#endif
e4ee916d 83
902b3d5c 84#ifdef __linux__
85void qemu_cache_utils_init(char **envp)
86{
87 ppc_init_cacheline_sizes(envp);
88}
89#else
90void qemu_cache_utils_init(char **envp)
91{
92 (void) envp;
93 ppc_init_cacheline_sizes();
94}
95#endif
96
e58ffeb3 97#endif /* _ARCH_PPC */