From patchwork Thu Apr 10 03:56:44 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibo Mao X-Patchwork-Id: 879938 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4C8921E9B3C; Thu, 10 Apr 2025 03:56:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744257422; cv=none; b=RBZAY4uwSgrQjJ2hcuh+fZdCRBuF0ugJzhWXbGOXHyOdCBmZEH3cnrjdHdPMJF4VEILc28uzlHo/+x29DVxYL1IRBNAgEUX1kJhxkzk/D8QrCz0+qe/PW31KjEiLjM3ZjBNprdvYIwoXrwEywVMtOtwPxgmZNMMLtHPsYxx47/I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744257422; c=relaxed/simple; bh=AREGUc6oqh7HTfWgWidfpW5B61LW5V2LRF/ZTXpmQkI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qAbjEiXEN0sW1JrXOKAjabTpDMZBIW9q6/pr7yo40v/q1WJUxHCB5TL1OB4QfXzM/CzZ+dVNRFOZ8TYw20dnuHH+TLYxOetYZYQ4xB6V2S0mtD0tp+28BZDS/auDsD7FdBC2+mVdRZs8zlXTAyKhpe0l2V4wTOalIbxFJHqMLMU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxmnGBQfdn15K2AA--.41598S3; Thu, 10 Apr 2025 11:56:49 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxHcV_QfdnQWl3AA--.27477S3; Thu, 10 Apr 2025 11:56:48 +0800 (CST) From: Bibo Mao To: Paolo Bonzini , Huacai Chen , Shuah Khan Cc: Sean Christopherson , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v8 1/4] KVM: selftests: Add KVM selftests header files for LoongArch Date: Thu, 10 Apr 2025 11:56:44 +0800 Message-Id: <20250410035647.3501139-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250410035647.3501139-1-maobibo@loongson.cn> References: <20250410035647.3501139-1-maobibo@loongson.cn> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qMiowMBxHcV_QfdnQWl3AA--.27477S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Add KVM selftests header files for LoongArch, including processor.h and kvm_util_base.h. It mainly contains LoongArch CSR register definition and page table entry definition. Signed-off-by: Bibo Mao --- .../testing/selftests/kvm/include/kvm_util.h | 5 + .../kvm/include/loongarch/kvm_util_arch.h | 7 + .../kvm/include/loongarch/processor.h | 138 ++++++++++++++++++ 3 files changed, 150 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h create mode 100644 tools/testing/selftests/kvm/include/loongarch/processor.h 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 */