1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2021-2022 Intel Corporation */
6 #include <linux/init.h>
7 #include <linux/bits.h>
10 #include <asm/ptrace.h>
11 #include <asm/trapnr.h>
12 #include <asm/shared/tdx.h>
15 * SW-defined error codes.
17 * Bits 47:40 == 0xFF indicate Reserved status code class that never used by
20 #define TDX_ERROR _BITUL(63)
21 #define TDX_SW_ERROR (TDX_ERROR | GENMASK_ULL(47, 40))
22 #define TDX_SEAMCALL_VMFAILINVALID (TDX_SW_ERROR | _UL(0xFFFF0000))
24 #define TDX_SEAMCALL_GP (TDX_SW_ERROR | X86_TRAP_GP)
25 #define TDX_SEAMCALL_UD (TDX_SW_ERROR | X86_TRAP_UD)
30 * Used by the #VE exception handler to gather the #VE exception
31 * info from the TDX module. This is a software only structure
32 * and not part of the TDX module/VMM ABI.
37 /* Guest Linear (virtual) Address */
39 /* Guest Physical Address */
45 #ifdef CONFIG_INTEL_TDX_GUEST
47 void __init tdx_early_init(void);
49 void tdx_get_ve_info(struct ve_info *ve);
51 bool tdx_handle_virt_exception(struct pt_regs *regs, struct ve_info *ve);
53 void tdx_safe_halt(void);
55 bool tdx_early_handle_ve(struct pt_regs *regs);
57 int tdx_mcall_get_report0(u8 *reportdata, u8 *tdreport);
59 u64 tdx_hcall_get_quote(u8 *buf, size_t size);
63 static inline void tdx_early_init(void) { };
64 static inline void tdx_safe_halt(void) { };
66 static inline bool tdx_early_handle_ve(struct pt_regs *regs) { return false; }
68 #endif /* CONFIG_INTEL_TDX_GUEST */
70 #if defined(CONFIG_KVM_GUEST) && defined(CONFIG_INTEL_TDX_GUEST)
71 long tdx_kvm_hypercall(unsigned int nr, unsigned long p1, unsigned long p2,
72 unsigned long p3, unsigned long p4);
74 static inline long tdx_kvm_hypercall(unsigned int nr, unsigned long p1,
75 unsigned long p2, unsigned long p3,
80 #endif /* CONFIG_INTEL_TDX_GUEST && CONFIG_KVM_GUEST */
82 #ifdef CONFIG_INTEL_TDX_HOST
83 u64 __seamcall(u64 fn, struct tdx_module_args *args);
84 u64 __seamcall_ret(u64 fn, struct tdx_module_args *args);
85 u64 __seamcall_saved_ret(u64 fn, struct tdx_module_args *args);
86 #endif /* CONFIG_INTEL_TDX_HOST */
88 #endif /* !__ASSEMBLY__ */
89 #endif /* _ASM_X86_TDX_H */