diff options
Diffstat (limited to 'src/geode_msr.c')
| -rw-r--r-- | src/geode_msr.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/geode_msr.c b/src/geode_msr.c index 8f57939..8cecb30 100644 --- a/src/geode_msr.c +++ b/src/geode_msr.c @@ -39,12 +39,19 @@ #include <machine/amdmsr.h> #endif +#ifdef __FreeBSD__ +#include <sys/ioctl.h> +#include <sys/cpuctl.h> +#endif + #include "os.h" #include "geode.h" #ifdef __OpenBSD__ #define _PATH_MSRDEV "/dev/amdmsr" #define X_PRIVSEP +#elif defined __FreeBSD__ +#define _PATH_MSRDEV "/dev/cpuctl0" #else #define _PATH_MSRDEV "/dev/cpu/0/msr" #endif @@ -83,6 +90,18 @@ GeodeReadMSR(unsigned long addr, unsigned long *lo, unsigned long *hi) *hi = req.val >> 32; *lo = req.val & 0xffffffff; +#elif defined __FreeBSD__ + cpuctl_msr_args_t args; + int fd = _msr_open(); + + args.msr = addr; + + if (ioctl(fd, CPUCTL_RDMSR, &args) == -1) + FatalError("Unable to read MSR at address %0x06x: %s\n", addr, + strerror(errno)); + + *hi = args.data >> 32; + *lo = args.data & 0xffffffff; #else unsigned int data[2]; int fd = _msr_open(); @@ -120,6 +139,16 @@ GeodeWriteMSR(unsigned long addr, unsigned long lo, unsigned long hi) if (ioctl(fd, WRMSR, &req) == -1) FatalError("Unable to write MSR at address 0x%06x: %s\n", addr, strerror(errno)); +#elif defined __FreeBSD__ + cpuctl_msr_args_t args; + int fd = _msr_open(); + + args.msr = addr; + args.data = (u_int64_t) hi << 32 | (u_int64_t)lo; + + if (ioctl(fd, CPUCTL_WRMSR, &args) == -1) + FatalError("Unable to write MSR at address 0x%06x: %s\n", addr, + strerror(errno)); #else unsigned int data[2]; int fd = _msr_open(); |