Update both files for disk io limits.
[qemu-dev-zwu.git] / cache-utils.c
blob2db5af2db14d025a5b24c606191c020028480a36
1 #include "cache-utils.h"
3 #if defined(_ARCH_PPC)
4 struct qemu_cache_conf qemu_cache_conf = {
5 .dcache_bsize = 16,
6 .icache_bsize = 16
7 };
9 #if defined _AIX
10 #include <sys/systemcfg.h>
12 static void ppc_init_cacheline_sizes(void)
14 qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
15 qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
18 #elif defined __linux__
20 #define QEMU_AT_NULL 0
21 #define QEMU_AT_DCACHEBSIZE 19
22 #define QEMU_AT_ICACHEBSIZE 20
24 static void ppc_init_cacheline_sizes(char **envp)
26 unsigned long *auxv;
28 while (*envp++);
30 for (auxv = (unsigned long *) envp; *auxv != QEMU_AT_NULL; auxv += 2) {
31 switch (*auxv) {
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;
34 default: break;
39 #elif defined __APPLE__
40 #include <stdio.h>
41 #include <sys/types.h>
42 #include <sys/sysctl.h>
44 static void ppc_init_cacheline_sizes(void)
46 size_t len;
47 unsigned cacheline;
48 int name[2] = { CTL_HW, HW_CACHELINE };
50 len = sizeof(cacheline);
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;
58 #endif
60 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61 #include <errno.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <sys/types.h>
66 #include <sys/sysctl.h>
68 static void ppc_init_cacheline_sizes(void)
70 size_t len = 4;
71 unsigned cacheline;
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);
79 qemu_cache_conf.dcache_bsize = cacheline;
80 qemu_cache_conf.icache_bsize = cacheline;
82 #endif
84 #ifdef __linux__
85 void qemu_cache_utils_init(char **envp)
87 ppc_init_cacheline_sizes(envp);
89 #else
90 void qemu_cache_utils_init(char **envp)
92 (void) envp;
93 ppc_init_cacheline_sizes();
95 #endif
97 #endif /* _ARCH_PPC */