diff options
Diffstat (limited to 'freebsd/sys/sys/cpu.h')
| -rw-r--r-- | freebsd/sys/sys/cpu.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/freebsd/sys/sys/cpu.h b/freebsd/sys/sys/cpu.h index c16091e1..f159e376 100644 --- a/freebsd/sys/sys/cpu.h +++ b/freebsd/sys/sys/cpu.h @@ -37,6 +37,8 @@ #define CPU_IVAR_PCPU 1 #define CPU_IVAR_NOMINAL_MHZ 2 +#define CPU_IVAR_CPUID_SIZE 3 +#define CPU_IVAR_CPUID 4 static __inline struct pcpu *cpu_get_pcpu(device_t dev) { @@ -54,6 +56,20 @@ static __inline int32_t cpu_get_nominal_mhz(device_t dev) return ((int32_t)v); } +static __inline const uint32_t *cpu_get_cpuid(device_t dev, size_t *count) +{ + uintptr_t v = 0; + if (BUS_READ_IVAR(device_get_parent(dev), dev, + CPU_IVAR_CPUID_SIZE, &v) != 0) + return (NULL); + *count = (size_t)v; + + if (BUS_READ_IVAR(device_get_parent(dev), dev, + CPU_IVAR_CPUID, &v) != 0) + return (NULL); + return ((const uint32_t *)v); +} + /* * CPU frequency control interface. */ |