linux-kernel - [PATCH v2 8/9] KVM: riscv: selftests: Add smstateen registers to get-reg-list test

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Message-Id: <20230925133859.1735879-9-apatel@ventanamicro.com>
Date:   Mon, 25 Sep 2023 19:08:58 +0530
From:   Anup Patel <apatel@...tanamicro.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Atish Patra <atishp@...shpatra.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Conor Dooley <conor@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shuah Khan <shuah@...nel.org>
Cc:     Andrew Jones <ajones@...tanamicro.com>,
        Mayuresh Chitale <mchitale@...tanamicro.com>,
        devicetree@...r.kernel.org, kvm@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        Anup Patel <apatel@...tanamicro.com>
Subject: [PATCH v2 8/9] KVM: riscv: selftests: Add smstateen registers to get-reg-list test

We have a new smstateen registers as separate sub-type of CSR ONE_REG
interface so let us add these registers to get-reg-list test.

Signed-off-by: Anup Patel <apatel@...tanamicro.com>
Reviewed-by: Andrew Jones <ajones@...tanamicro.com>
---
 .../selftests/kvm/riscv/get-reg-list.c        | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
index 6cec0ef75cc7..625118d53b74 100644
--- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
+++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
@@ -36,6 +36,7 @@ bool filter_reg(__u64 reg)
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_I:
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_M:
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_V:
+	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SMSTATEEN:
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSAIA:
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSTC:
 	case KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SVINVAL:
@@ -186,6 +187,8 @@ static const char *core_id_to_str(const char *prefix, __u64 id)
 	"KVM_REG_RISCV_CSR_GENERAL | KVM_REG_RISCV_CSR_REG(" #csr ")"
 #define RISCV_CSR_AIA(csr) \
 	"KVM_REG_RISCV_CSR_AIA | KVM_REG_RISCV_CSR_REG(" #csr ")"
+#define RISCV_CSR_SMSTATEEN(csr) \
+	"KVM_REG_RISCV_CSR_SMSTATEEN | KVM_REG_RISCV_CSR_REG(" #csr ")"
 
 static const char *general_csr_id_to_str(__u64 reg_off)
 {
@@ -243,6 +246,18 @@ static const char *aia_csr_id_to_str(__u64 reg_off)
 	return NULL;
 }
 
+static const char *smstateen_csr_id_to_str(__u64 reg_off)
+{
+	/* reg_off is the offset into struct kvm_riscv_smstateen_csr */
+	switch (reg_off) {
+	case KVM_REG_RISCV_CSR_SMSTATEEN_REG(sstateen0):
+		return RISCV_CSR_SMSTATEEN(sstateen0);
+	}
+
+	TEST_FAIL("Unknown smstateen csr reg: 0x%llx", reg_off);
+	return NULL;
+}
+
 static const char *csr_id_to_str(const char *prefix, __u64 id)
 {
 	__u64 reg_off = id & ~(REG_MASK | KVM_REG_RISCV_CSR);
@@ -255,6 +270,8 @@ static const char *csr_id_to_str(const char *prefix, __u64 id)
 		return general_csr_id_to_str(reg_off);
 	case KVM_REG_RISCV_CSR_AIA:
 		return aia_csr_id_to_str(reg_off);
+	case KVM_REG_RISCV_CSR_SMSTATEEN:
+		return smstateen_csr_id_to_str(reg_off);
 	}
 
 	TEST_FAIL("%s: Unknown csr subtype: 0x%llx", prefix, reg_subtype);
@@ -332,6 +349,7 @@ static const char *isa_ext_id_to_str(__u64 id)
 		KVM_ISA_EXT_ARR(I),
 		KVM_ISA_EXT_ARR(M),
 		KVM_ISA_EXT_ARR(V),
+		KVM_ISA_EXT_ARR(SMSTATEEN),
 		KVM_ISA_EXT_ARR(SSAIA),
 		KVM_ISA_EXT_ARR(SSTC),
 		KVM_ISA_EXT_ARR(SVINVAL),
@@ -637,6 +655,11 @@ static __u64 aia_regs[] = {
 	KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SSAIA,
 };
 
+static __u64 smstateen_regs[] = {
+	KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_CSR | KVM_REG_RISCV_CSR_SMSTATEEN | KVM_REG_RISCV_CSR_SMSTATEEN_REG(sstateen0),
+	KVM_REG_RISCV | KVM_REG_SIZE_ULONG | KVM_REG_RISCV_ISA_EXT | KVM_RISCV_ISA_EXT_SMSTATEEN,
+};
+
 static __u64 fp_f_regs[] = {
 	KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[0]),
 	KVM_REG_RISCV | KVM_REG_SIZE_U32 | KVM_REG_RISCV_FP_F | KVM_REG_RISCV_FP_F_REG(f[1]),
@@ -744,6 +767,8 @@ static __u64 fp_d_regs[] = {
 	{"zihpm", .feature = KVM_RISCV_ISA_EXT_ZIHPM, .regs = zihpm_regs, .regs_n = ARRAY_SIZE(zihpm_regs),}
 #define AIA_REGS_SUBLIST \
 	{"aia", .feature = KVM_RISCV_ISA_EXT_SSAIA, .regs = aia_regs, .regs_n = ARRAY_SIZE(aia_regs),}
+#define SMSTATEEN_REGS_SUBLIST \
+	{"smstateen", .feature = KVM_RISCV_ISA_EXT_SMSTATEEN, .regs = smstateen_regs, .regs_n = ARRAY_SIZE(smstateen_regs),}
 #define FP_F_REGS_SUBLIST \
 	{"fp_f", .feature = KVM_RISCV_ISA_EXT_F, .regs = fp_f_regs, \
 		.regs_n = ARRAY_SIZE(fp_f_regs),}
@@ -871,6 +896,14 @@ static struct vcpu_reg_list aia_config = {
 	},
 };
 
+static struct vcpu_reg_list smstateen_config = {
+	.sublists = {
+	BASE_SUBLIST,
+	SMSTATEEN_REGS_SUBLIST,
+	{0},
+	},
+};
+
 static struct vcpu_reg_list fp_f_config = {
 	.sublists = {
 	BASE_SUBLIST,
@@ -903,6 +936,7 @@ struct vcpu_reg_list *vcpu_configs[] = {
 	&zifencei_config,
 	&zihpm_config,
 	&aia_config,
+	&smstateen_config,
 	&fp_f_config,
 	&fp_d_config,
 };
-- 
2.34.1