[v8,1/4] KVM: selftests: Add KVM selftests header files for LoongArch

diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 373912464fb4..d9cb62207c57 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -232,6 +232,11 @@  extern enum vm_guest_mode vm_mode_default;
 #define MIN_PAGE_SHIFT			12U
 #define ptes_per_page(page_size)	((page_size) / 8)
 
+#elif defined(__loongarch__)
+#define VM_MODE_DEFAULT			VM_MODE_P36V47_16K
+#define MIN_PAGE_SHIFT			12U
+#define ptes_per_page(page_size)	((page_size) / 8)
+
 #endif
 
 #define VM_SHAPE_DEFAULT	VM_SHAPE(VM_MODE_DEFAULT)
diff --git a/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h b/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h
new file mode 100644
index 000000000000..e43a57d99b56
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h
@@ -0,0 +1,7 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef SELFTEST_KVM_UTIL_ARCH_H
+#define SELFTEST_KVM_UTIL_ARCH_H
+
+struct kvm_vm_arch {};
+
+#endif  // SELFTEST_KVM_UTIL_ARCH_H
diff --git a/tools/testing/selftests/kvm/include/loongarch/processor.h b/tools/testing/selftests/kvm/include/loongarch/processor.h
new file mode 100644
index 000000000000..e95dd2059605
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/loongarch/processor.h
@@ -0,0 +1,138 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SELFTEST_KVM_PROCESSOR_H
+#define SELFTEST_KVM_PROCESSOR_H
+
+#ifndef __ASSEMBLER__
+#include "ucall_common.h"
+
+#else
+/* general registers */
+#define zero				$r0
+#define ra				$r1
+#define tp				$r2
+#define sp				$r3
+#define a0				$r4
+#define a1				$r5
+#define a2				$r6
+#define a3				$r7
+#define a4				$r8
+#define a5				$r9
+#define a6				$r10
+#define a7				$r11
+#define t0				$r12
+#define t1				$r13
+#define t2				$r14
+#define t3				$r15
+#define t4				$r16
+#define t5				$r17
+#define t6				$r18
+#define t7				$r19
+#define t8				$r20
+#define u0				$r21
+#define fp				$r22
+#define s0				$r23
+#define s1				$r24
+#define s2				$r25
+#define s3				$r26
+#define s4				$r27
+#define s5				$r28
+#define s6				$r29
+#define s7				$r30
+#define s8				$r31
+#endif
+
+/* LoongArch page table entry definition */
+#define _PAGE_VALID_SHIFT		0
+#define _PAGE_DIRTY_SHIFT		1
+#define _PAGE_PLV_SHIFT			2  /* 2~3, two bits */
+#define  PLV_KERN			0
+#define  PLV_USER			3
+#define  PLV_MASK			0x3
+#define _CACHE_SHIFT			4  /* 4~5, two bits */
+#define _PAGE_PRESENT_SHIFT		7
+#define _PAGE_WRITE_SHIFT		8
+
+#define _PAGE_VALID			BIT_ULL(_PAGE_VALID_SHIFT)
+#define _PAGE_PRESENT			BIT_ULL(_PAGE_PRESENT_SHIFT)
+#define _PAGE_WRITE			BIT_ULL(_PAGE_WRITE_SHIFT)
+#define _PAGE_DIRTY			BIT_ULL(_PAGE_DIRTY_SHIFT)
+#define _PAGE_USER			(PLV_USER << _PAGE_PLV_SHIFT)
+#define   __READABLE			(_PAGE_VALID)
+#define   __WRITEABLE			(_PAGE_DIRTY | _PAGE_WRITE)
+/* Coherent Cached */
+#define _CACHE_CC			BIT_ULL(_CACHE_SHIFT)
+#define PS_4K				0x0000000c
+#define PS_8K				0x0000000d
+#define PS_16K				0x0000000e
+#define PS_DEFAULT_SIZE			PS_16K
+
+/* LoongArch Basic CSR registers */
+#define LOONGARCH_CSR_CRMD		0x0 /* Current mode info */
+#define  CSR_CRMD_PG_SHIFT		4
+#define  CSR_CRMD_PG			BIT_ULL(CSR_CRMD_PG_SHIFT)
+#define  CSR_CRMD_IE_SHIFT		2
+#define  CSR_CRMD_IE			BIT_ULL(CSR_CRMD_IE_SHIFT)
+#define  CSR_CRMD_PLV_SHIFT		0
+#define  CSR_CRMD_PLV_WIDTH		2
+#define  CSR_CRMD_PLV			(0x3UL << CSR_CRMD_PLV_SHIFT)
+#define  PLV_MASK			0x3
+#define LOONGARCH_CSR_PRMD		0x1
+#define LOONGARCH_CSR_EUEN		0x2
+#define LOONGARCH_CSR_ECFG		0x4
+#define LOONGARCH_CSR_ESTAT		0x5  /* Exception status */
+#define LOONGARCH_CSR_ERA		0x6  /* ERA */
+#define LOONGARCH_CSR_BADV		0x7  /* Bad virtual address */
+#define LOONGARCH_CSR_EENTRY		0xc
+#define LOONGARCH_CSR_TLBIDX		0x10 /* TLB Index, EHINV, PageSize */
+#define  CSR_TLBIDX_PS_SHIFT		24
+#define  CSR_TLBIDX_PS_WIDTH		6
+#define  CSR_TLBIDX_PS			(0x3fUL << CSR_TLBIDX_PS_SHIFT)
+#define  CSR_TLBIDX_SIZEM		0x3f000000
+#define  CSR_TLBIDX_SIZE		CSR_TLBIDX_PS_SHIFT
+#define LOONGARCH_CSR_ASID		0x18 /* ASID */
+#define LOONGARCH_CSR_PGDL		0x19
+#define LOONGARCH_CSR_PGDH		0x1a
+/* Page table base */
+#define LOONGARCH_CSR_PGD		0x1b
+#define LOONGARCH_CSR_PWCTL0		0x1c
+#define LOONGARCH_CSR_PWCTL1		0x1d
+#define LOONGARCH_CSR_STLBPGSIZE	0x1e
+#define LOONGARCH_CSR_CPUID		0x20
+#define LOONGARCH_CSR_KS0		0x30
+#define LOONGARCH_CSR_KS1		0x31
+#define LOONGARCH_CSR_TMID		0x40
+#define LOONGARCH_CSR_TCFG		0x41
+/* TLB refill exception entry */
+#define LOONGARCH_CSR_TLBRENTRY		0x88
+#define LOONGARCH_CSR_TLBRSAVE		0x8b
+#define LOONGARCH_CSR_TLBREHI		0x8e
+#define  CSR_TLBREHI_PS_SHIFT		0
+#define  CSR_TLBREHI_PS			(0x3fUL << CSR_TLBREHI_PS_SHIFT)
+
+#define EXREGS_GPRS			(32)
+
+#ifndef __ASSEMBLER__
+void handle_tlb_refill(void);
+void handle_exception(void);
+
+struct ex_regs {
+	unsigned long regs[EXREGS_GPRS];
+	unsigned long pc;
+	unsigned long estat;
+	unsigned long badv;
+};
+
+#define PC_OFFSET_EXREGS		offsetof(struct ex_regs, pc)
+#define ESTAT_OFFSET_EXREGS		offsetof(struct ex_regs, estat)
+#define BADV_OFFSET_EXREGS		offsetof(struct ex_regs, badv)
+#define EXREGS_SIZE			sizeof(struct ex_regs)
+
+#else
+#define PC_OFFSET_EXREGS		((EXREGS_GPRS + 0) * 8)
+#define ESTAT_OFFSET_EXREGS		((EXREGS_GPRS + 1) * 8)
+#define BADV_OFFSET_EXREGS		((EXREGS_GPRS + 2) * 8)
+#define EXREGS_SIZE			((EXREGS_GPRS + 3) * 8)
+#endif
+
+#endif /* SELFTEST_KVM_PROCESSOR_H */