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cpu: Add CPU information to pa_core
This retains CPU information (processor type and supported features) in pa_core, so that this information can be used by modules at init time to figure out what optimisations may be used.
This commit is contained in:
Arun Raghavan
parent
ffcf3c8a6c
commit
ab4223e9cf
8 changed files with 119 additions and 55 deletions
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@ -24,6 +24,7 @@
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#include <pulse/mainloop-api.h>
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#include <pulse/sample.h>
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#include <pulsecore/cpu.h>
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typedef struct pa_core pa_core;
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@ -169,6 +170,7 @@ struct pa_core {
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int realtime_priority;
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pa_server_type_t server_type;
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pa_cpu_info cpu_info;
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/* hooks */
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pa_hook hooks[PA_CORE_HOOK_MAX];
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@ -80,12 +80,11 @@ static char *get_cpuinfo(void) {
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}
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#endif /* defined (__arm__) && defined (__linux__) */
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void pa_cpu_init_arm (void) {
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pa_bool_t pa_cpu_init_arm (pa_cpu_arm_flag_t *flags) {
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#if defined (__arm__)
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#if defined (__linux__)
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char *cpuinfo, *line;
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int arch;
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pa_cpu_arm_flag_t flags = 0;
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/* We need to read the CPU flags from /proc/cpuinfo because there is no user
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* space support to get the CPU features. This only works on linux AFAIK. */
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@ -94,13 +93,15 @@ void pa_cpu_init_arm (void) {
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return;
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}
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*flags = 0;
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/* get the CPU architecture */
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if ((line = get_cpuinfo_line (cpuinfo, "CPU architecture"))) {
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arch = strtoul (line, NULL, 0);
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if (arch >= 6)
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flags |= PA_CPU_ARM_V6;
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*flags |= PA_CPU_ARM_V6;
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if (arch >= 7)
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flags |= PA_CPU_ARM_V7;
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*flags |= PA_CPU_ARM_V7;
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pa_xfree(line);
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}
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@ -111,13 +112,13 @@ void pa_cpu_init_arm (void) {
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while ((current = pa_split_spaces (line, &state))) {
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if (!strcmp (current, "vfp"))
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flags |= PA_CPU_ARM_VFP;
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*flags |= PA_CPU_ARM_VFP;
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else if (!strcmp (current, "edsp"))
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flags |= PA_CPU_ARM_EDSP;
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*flags |= PA_CPU_ARM_EDSP;
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else if (!strcmp (current, "neon"))
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flags |= PA_CPU_ARM_NEON;
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*flags |= PA_CPU_ARM_NEON;
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else if (!strcmp (current, "vfpv3"))
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flags |= PA_CPU_ARM_VFPV3;
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*flags |= PA_CPU_ARM_VFPV3;
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pa_xfree(current);
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}
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@ -125,17 +126,23 @@ void pa_cpu_init_arm (void) {
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pa_xfree(cpuinfo);
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pa_log_info ("CPU flags: %s%s%s%s%s%s",
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(flags & PA_CPU_ARM_V6) ? "V6 " : "",
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(flags & PA_CPU_ARM_V7) ? "V7 " : "",
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(flags & PA_CPU_ARM_VFP) ? "VFP " : "",
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(flags & PA_CPU_ARM_EDSP) ? "EDSP " : "",
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(flags & PA_CPU_ARM_NEON) ? "NEON " : "",
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(flags & PA_CPU_ARM_VFPV3) ? "VFPV3 " : "");
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(*flags & PA_CPU_ARM_V6) ? "V6 " : "",
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(*flags & PA_CPU_ARM_V7) ? "V7 " : "",
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(*flags & PA_CPU_ARM_VFP) ? "VFP " : "",
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(*flags & PA_CPU_ARM_EDSP) ? "EDSP " : "",
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(*flags & PA_CPU_ARM_NEON) ? "NEON " : "",
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(*flags & PA_CPU_ARM_VFPV3) ? "VFPV3 " : "");
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if (*flags & PA_CPU_ARM_V6)
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pa_volume_func_init_arm (*flags);
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return TRUE;
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#else /* defined (__linux__) */
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pa_log ("ARM cpu features not yet supported on this OS");
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#endif /* defined (__linux__) */
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if (flags & PA_CPU_ARM_V6)
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pa_volume_func_init_arm (flags);
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#else /* defined (__arm__) */
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return FALSE;
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#endif /* defined (__arm__) */
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}
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@ -24,6 +24,7 @@
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***/
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#include <stdint.h>
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#include <pulsecore/macro.h>
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typedef enum pa_cpu_arm_flag {
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PA_CPU_ARM_V6 = (1 << 0),
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@ -34,7 +35,7 @@ typedef enum pa_cpu_arm_flag {
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PA_CPU_ARM_VFPV3 = (1 << 5)
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} pa_cpu_arm_flag_t;
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void pa_cpu_init_arm (void);
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pa_bool_t pa_cpu_init_arm (pa_cpu_arm_flag_t *flags);
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/* some optimized functions */
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void pa_volume_func_init_arm(pa_cpu_arm_flag_t flags);
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@ -46,11 +46,12 @@ get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d)
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}
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#endif
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void pa_cpu_init_x86 (void) {
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pa_bool_t pa_cpu_init_x86 (pa_cpu_x86_flag_t *flags) {
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#if defined (__i386__) || defined (__amd64__)
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uint32_t eax, ebx, ecx, edx;
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uint32_t level;
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pa_cpu_x86_flag_t flags = 0;
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*flags = 0;
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/* get standard level */
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get_cpuid (0x00000000, &level, &ebx, &ecx, &edx);
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@ -58,28 +59,28 @@ void pa_cpu_init_x86 (void) {
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get_cpuid (0x00000001, &eax, &ebx, &ecx, &edx);
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if (edx & (1<<15))
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flags |= PA_CPU_X86_CMOV;
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*flags |= PA_CPU_X86_CMOV;
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if (edx & (1<<23))
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flags |= PA_CPU_X86_MMX;
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*flags |= PA_CPU_X86_MMX;
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if (edx & (1<<25))
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flags |= PA_CPU_X86_SSE;
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*flags |= PA_CPU_X86_SSE;
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if (edx & (1<<26))
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flags |= PA_CPU_X86_SSE2;
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*flags |= PA_CPU_X86_SSE2;
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if (ecx & (1<<0))
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flags |= PA_CPU_X86_SSE3;
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*flags |= PA_CPU_X86_SSE3;
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if (ecx & (1<<9))
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flags |= PA_CPU_X86_SSSE3;
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*flags |= PA_CPU_X86_SSSE3;
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if (ecx & (1<<19))
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flags |= PA_CPU_X86_SSE4_1;
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*flags |= PA_CPU_X86_SSE4_1;
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if (ecx & (1<<20))
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flags |= PA_CPU_X86_SSE4_2;
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*flags |= PA_CPU_X86_SSE4_2;
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}
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/* get extended level */
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@ -88,42 +89,45 @@ void pa_cpu_init_x86 (void) {
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get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx);
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if (edx & (1<<22))
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flags |= PA_CPU_X86_MMXEXT;
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*flags |= PA_CPU_X86_MMXEXT;
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if (edx & (1<<23))
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flags |= PA_CPU_X86_MMX;
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*flags |= PA_CPU_X86_MMX;
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if (edx & (1<<30))
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flags |= PA_CPU_X86_3DNOWEXT;
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*flags |= PA_CPU_X86_3DNOWEXT;
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if (edx & (1<<31))
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flags |= PA_CPU_X86_3DNOW;
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*flags |= PA_CPU_X86_3DNOW;
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}
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pa_log_info ("CPU flags: %s%s%s%s%s%s%s%s%s%s%s",
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(flags & PA_CPU_X86_CMOV) ? "CMOV " : "",
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(flags & PA_CPU_X86_MMX) ? "MMX " : "",
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(flags & PA_CPU_X86_SSE) ? "SSE " : "",
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(flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",
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(flags & PA_CPU_X86_SSE3) ? "SSE3 " : "",
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(flags & PA_CPU_X86_SSSE3) ? "SSSE3 " : "",
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(flags & PA_CPU_X86_SSE4_1) ? "SSE4_1 " : "",
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(flags & PA_CPU_X86_SSE4_2) ? "SSE4_2 " : "",
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(flags & PA_CPU_X86_MMXEXT) ? "MMXEXT " : "",
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(flags & PA_CPU_X86_3DNOW) ? "3DNOW " : "",
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(flags & PA_CPU_X86_3DNOWEXT) ? "3DNOWEXT " : "");
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(*flags & PA_CPU_X86_CMOV) ? "CMOV " : "",
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(*flags & PA_CPU_X86_MMX) ? "MMX " : "",
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(*flags & PA_CPU_X86_SSE) ? "SSE " : "",
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(*flags & PA_CPU_X86_SSE2) ? "SSE2 " : "",
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(*flags & PA_CPU_X86_SSE3) ? "SSE3 " : "",
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(*flags & PA_CPU_X86_SSSE3) ? "SSSE3 " : "",
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(*flags & PA_CPU_X86_SSE4_1) ? "SSE4_1 " : "",
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(*flags & PA_CPU_X86_SSE4_2) ? "SSE4_2 " : "",
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(*flags & PA_CPU_X86_MMXEXT) ? "MMXEXT " : "",
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(*flags & PA_CPU_X86_3DNOW) ? "3DNOW " : "",
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(*flags & PA_CPU_X86_3DNOWEXT) ? "3DNOWEXT " : "");
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/* activate various optimisations */
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if (flags & PA_CPU_X86_MMX) {
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pa_volume_func_init_mmx (flags);
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pa_remap_func_init_mmx (flags);
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if (*flags & PA_CPU_X86_MMX) {
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pa_volume_func_init_mmx (*flags);
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pa_remap_func_init_mmx (*flags);
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}
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if (flags & (PA_CPU_X86_SSE | PA_CPU_X86_SSE2)) {
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pa_volume_func_init_sse (flags);
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pa_remap_func_init_sse (flags);
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pa_convert_func_init_sse (flags);
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if (*flags & (PA_CPU_X86_SSE | PA_CPU_X86_SSE2)) {
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pa_volume_func_init_sse (*flags);
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pa_remap_func_init_sse (*flags);
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pa_convert_func_init_sse (*flags);
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}
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return TRUE;
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#else /* defined (__i386__) || defined (__amd64__) */
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return FALSE;
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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@ -24,6 +24,7 @@
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***/
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#include <stdint.h>
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#include <pulsecore/macro.h>
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typedef enum pa_cpu_x86_flag {
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PA_CPU_X86_MMX = (1 << 0),
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@ -39,7 +40,7 @@ typedef enum pa_cpu_x86_flag {
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PA_CPU_X86_CMOV = (1 << 10)
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} pa_cpu_x86_flag_t;
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void pa_cpu_init_x86 (void);
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pa_bool_t pa_cpu_init_x86 (pa_cpu_x86_flag_t *flags);
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#if defined (__i386__)
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typedef int32_t pa_reg_x86;
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45
src/pulsecore/cpu.h
Normal file
45
src/pulsecore/cpu.h
Normal file
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@ -0,0 +1,45 @@
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#ifndef foocpuhfoo
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#define foocpuhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2010 Arun Raghavan
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <pulsecore/cpu-x86.h>
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#include <pulsecore/cpu-arm.h>
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typedef enum {
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PA_CPU_UNDEFINED = 0,
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PA_CPU_X86,
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PA_CPU_ARM,
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} pa_cpu_type_t;
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typedef struct pa_cpu_info pa_cpu_info;
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struct pa_cpu_info {
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pa_cpu_type_t cpu_type;
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union {
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pa_cpu_x86_flag_t x86;
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pa_cpu_arm_flag_t arm;
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} flags;
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};
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#endif /* foocpuhfoo */
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