diff options
Diffstat (limited to 'arch/x86/include/asm/tdx.h')
| -rw-r--r-- | arch/x86/include/asm/tdx.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index f3d5305a60fc..eba178996d84 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -24,8 +24,16 @@ #define TDX_SEAMCALL_GP (TDX_SW_ERROR | X86_TRAP_GP) #define TDX_SEAMCALL_UD (TDX_SW_ERROR | X86_TRAP_UD) +/* + * TDX module SEAMCALL leaf function error codes + */ +#define TDX_SUCCESS 0ULL +#define TDX_RND_NO_ENTROPY 0x8000020300000000ULL + #ifndef __ASSEMBLY__ +#include <uapi/asm/mce.h> + /* * Used by the #VE exception handler to gather the #VE exception * info from the TDX module. This is a software only structure @@ -83,6 +91,36 @@ static inline long tdx_kvm_hypercall(unsigned int nr, unsigned long p1, u64 __seamcall(u64 fn, struct tdx_module_args *args); u64 __seamcall_ret(u64 fn, struct tdx_module_args *args); u64 __seamcall_saved_ret(u64 fn, struct tdx_module_args *args); +void tdx_init(void); + +#include <asm/archrandom.h> + +typedef u64 (*sc_func_t)(u64 fn, struct tdx_module_args *args); + +static inline u64 sc_retry(sc_func_t func, u64 fn, + struct tdx_module_args *args) +{ + int retry = RDRAND_RETRY_LOOPS; + u64 ret; + + do { + ret = func(fn, args); + } while (ret == TDX_RND_NO_ENTROPY && --retry); + + return ret; +} + +#define seamcall(_fn, _args) sc_retry(__seamcall, (_fn), (_args)) +#define seamcall_ret(_fn, _args) sc_retry(__seamcall_ret, (_fn), (_args)) +#define seamcall_saved_ret(_fn, _args) sc_retry(__seamcall_saved_ret, (_fn), (_args)) +int tdx_cpu_enable(void); +int tdx_enable(void); +const char *tdx_dump_mce_info(struct mce *m); +#else +static inline void tdx_init(void) { } +static inline int tdx_cpu_enable(void) { return -ENODEV; } +static inline int tdx_enable(void) { return -ENODEV; } +static inline const char *tdx_dump_mce_info(struct mce *m) { return NULL; } #endif /* CONFIG_INTEL_TDX_HOST */ #endif /* !__ASSEMBLY__ */ |