diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/misc/amd-apml.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/uapi/misc/amd-apml.h b/include/uapi/misc/amd-apml.h index a5f086f84b06..bb57dc75758a 100644 --- a/include/uapi/misc/amd-apml.h +++ b/include/uapi/misc/amd-apml.h @@ -25,6 +25,24 @@ struct apml_mbox_msg { __u32 fw_ret_code; }; +struct apml_cpuid_msg { + /* + * CPUID input + * [0]...[3] cpuid func, + * [4][5] cpuid: thread + * [6] cpuid: ext function & read eax/ebx or ecx/edx + * [7:0] -> bits [7:4] -> ext function & + * bit [0] read eax/ebx or ecx/edx + * CPUID output + */ + __u64 cpu_in_out; + /* + * Status code for CPUID read + */ + __u32 fw_ret_code; + __u32 pad; +}; + /* * AMD sideband interface base IOCTL */ @@ -48,4 +66,23 @@ struct apml_mbox_msg { */ #define SBRMI_IOCTL_MBOX_CMD _IOWR(SB_BASE_IOCTL_NR, 0, struct apml_mbox_msg) +/** + * DOC: SBRMI_IOCTL_CPUID_CMD + * + * @Parameters + * + * @struct apml_cpuid_msg + * Pointer to the &struct apml_cpuid_msg that will contain the protocol + * information + * + * @Description + * IOCTL command for APML messages using generic _IOWR + * The IOCTL provides userspace access to AMD sideband cpuid protocol + * - CPUID protocol to get CPU details for Function/Ext Function + * at thread level + * - returning "-EFAULT" if none of the above + * "-EPROTOTYPE" error is returned to provide additional error details + */ +#define SBRMI_IOCTL_CPUID_CMD _IOWR(SB_BASE_IOCTL_NR, 1, struct apml_cpuid_msg) + #endif /*_AMD_APML_H_*/ |