[RFC,v5,016/104] KVM: TDX: Add C wrapper functions for SEAMCALLs to the TDX module

Commit Message

Isaku Yamahata March 4, 2022, 7:48 p.m. UTC

From: Sean Christopherson <[e-mail]>

TDX SEAMCALL interface is defined in the TDX module specification.  Define
C wrapper functions for SEAMCALLs for readability.

Signed-off-by: Sean Christopherson <[e-mail]>
Signed-off-by: Isaku Yamahata <[e-mail]>
---
 arch/x86/kvm/vmx/tdx_ops.h | 161 +++++++++++++++++++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 arch/x86/kvm/vmx/tdx_ops.h

Patch

diff --git a/arch/x86/kvm/vmx/tdx_ops.h b/arch/x86/kvm/vmx/tdx_ops.h
new file mode 100644
index 000000000000..0bed43879b82
--- /dev/null
+++ b/arch/x86/kvm/vmx/tdx_ops.h
@@ -0,0 +1,161 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/* constants/data definitions for TDX SEAMCALLs */
+
+#ifndef __KVM_X86_TDX_OPS_H
+#define __KVM_X86_TDX_OPS_H
+
+#include <linux/compiler.h>
+
+#include <asm/asm.h>
+#include <asm/kvm_host.h>
+
+#include "tdx_errno.h"
+#include "tdx_arch.h"
+#include "seamcall.h"
+
+#ifdef CONFIG_INTEL_TDX_HOST
+
+static inline u64 tdh_mng_addcx(hpa_t tdr, hpa_t addr)
+{
+	return kvm_seamcall(TDH_MNG_ADDCX, addr, tdr, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mem_page_add(hpa_t tdr, gpa_t gpa, hpa_t hpa, hpa_t source,
+				struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_PAGE_ADD, gpa, tdr, hpa, source, 0, out);
+}
+
+static inline u64 tdh_mem_sept_add(hpa_t tdr, gpa_t gpa, int level, hpa_t page,
+				struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_SEPT_ADD, gpa | level, tdr, page, 0, 0, out);
+}
+
+static inline u64 tdh_vp_addcx(hpa_t tdvpr, hpa_t addr)
+{
+	return kvm_seamcall(TDH_VP_ADDCX, addr, tdvpr, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mem_page_aug(hpa_t tdr, gpa_t gpa, hpa_t hpa,
+				struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_PAGE_AUG, gpa, tdr, hpa, 0, 0, out);
+}
+
+static inline u64 tdh_mem_range_block(hpa_t tdr, gpa_t gpa, int level,
+				struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_RANGE_BLOCK, gpa | level, tdr, 0, 0, 0, out);
+}
+
+static inline u64 tdh_mng_key_config(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MNG_KEY_CONFIG, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mng_create(hpa_t tdr, int hkid)
+{
+	return kvm_seamcall(TDH_MNG_CREATE, tdr, hkid, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_vp_create(hpa_t tdr, hpa_t tdvpr)
+{
+	return kvm_seamcall(TDH_VP_CREATE, tdvpr, tdr, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mng_rd(hpa_t tdr, u64 field, struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MNG_RD, tdr, field, 0, 0, 0, out);
+}
+
+static inline u64 tdh_mr_extend(hpa_t tdr, gpa_t gpa, struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MR_EXTEND, gpa, tdr, 0, 0, 0, out);
+}
+
+static inline u64 tdh_mr_finalize(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MR_FINALIZE, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_vp_flush(hpa_t tdvpr)
+{
+	return kvm_seamcall(TDH_VP_FLUSH, tdvpr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mng_vpflushdone(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MNG_VPFLUSHDONE, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mng_key_freeid(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MNG_KEY_FREEID, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mng_init(hpa_t tdr, hpa_t td_params, struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MNG_INIT, tdr, td_params, 0, 0, 0, out);
+}
+
+static inline u64 tdh_vp_init(hpa_t tdvpr, u64 rcx)
+{
+	return kvm_seamcall(TDH_VP_INIT, tdvpr, rcx, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_vp_rd(hpa_t tdvpr, u64 field, struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_VP_RD, tdvpr, field, 0, 0, 0, out);
+}
+
+static inline u64 tdh_mng_key_reclaimid(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MNG_KEY_RECLAIMID, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_phymem_page_reclaim(hpa_t page, struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_PHYMEM_PAGE_RECLAIM, page, 0, 0, 0, 0, out);
+}
+
+static inline u64 tdh_mem_page_remove(hpa_t tdr, gpa_t gpa, int level,
+				struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_PAGE_REMOVE, gpa | level, tdr, 0, 0, 0, out);
+}
+
+static inline u64 tdh_sys_lp_shutdown(void)
+{
+	return kvm_seamcall(TDH_SYS_LP_SHUTDOWN, 0, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mem_track(hpa_t tdr)
+{
+	return kvm_seamcall(TDH_MEM_TRACK, tdr, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_mem_range_unblock(hpa_t tdr, gpa_t gpa, int level,
+					struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_MEM_RANGE_UNBLOCK, gpa | level, tdr, 0, 0, 0, out);
+}
+
+static inline u64 tdh_phymem_cache_wb(bool resume)
+{
+	return kvm_seamcall(TDH_PHYMEM_CACHE_WB, resume ? 1 : 0, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_phymem_page_wbinvd(hpa_t page)
+{
+	return kvm_seamcall(TDH_PHYMEM_PAGE_WBINVD, page, 0, 0, 0, 0, NULL);
+}
+
+static inline u64 tdh_vp_wr(hpa_t tdvpr, u64 field, u64 val, u64 mask,
+			struct tdx_module_output *out)
+{
+	return kvm_seamcall(TDH_VP_WR, tdvpr, field, val, mask, 0, out);
+}
+#endif /* CONFIG_INTEL_TDX_HOST */
+
+#endif /* __KVM_X86_TDX_OPS_H */