linux-kernel - [PATCH V2 07/14] arm64/sysreg: Rename TRBIDR

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Date:   Fri,  2 Jun 2023 11:55:45 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-arm-kernel@...ts.infradead.org, broonie@...nel.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        James Morse <james.morse@....com>, kvmarm@...ts.linux.dev,
        coresight@...ts.linaro.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 07/14] arm64/sysreg: Rename TRBIDR_EL1 fields per auto-gen tools format

This renames TRBIDR_EL1 register fields per auto-gen tools format without
causing any functional change in the TRBE driver.

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Mark Brown <broonie@...nel.org>
Cc: Rob Herring <robh@...nel.org>
Cc: Suzuki K Poulose <suzuki.poulose@....com>
Cc: James Morse <james.morse@....com>
Cc: kvmarm@...ts.linux.dev
Cc: coresight@...ts.linaro.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 arch/arm64/include/asm/el2_setup.h           | 2 +-
 arch/arm64/include/asm/sysreg.h              | 8 ++++----
 arch/arm64/kvm/debug.c                       | 2 +-
 drivers/hwtracing/coresight/coresight-trbe.h | 6 +++---
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 037724b19c5c..63ea1ef6c99e 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -69,7 +69,7 @@
 	cbz	x0, .Lskip_trace_\@		// Skip if TraceBuffer is not present
 
 	mrs_s	x0, SYS_TRBIDR_EL1
-	and	x0, x0, TRBIDR_PROG
+	and	x0, x0, TRBIDR_EL1_P
 	cbnz	x0, .Lskip_trace_\@		// If TRBE is available at EL2
 
 	mov	x0, #(MDCR_EL2_E2TB_MASK << MDCR_EL2_E2TB_SHIFT)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index f1de473ff027..114d38acdca5 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -277,10 +277,10 @@
 #define TRBMAR_EL1_Attr_SHIFT		0
 #define TRBTRG_EL1_TRG_MASK		GENMASK(31, 0)
 #define TRBTRG_EL1_TRG_SHIFT		0
-#define TRBIDR_FLAG			BIT(5)
-#define TRBIDR_PROG			BIT(4)
-#define TRBIDR_ALIGN_MASK		GENMASK(3, 0)
-#define TRBIDR_ALIGN_SHIFT		0
+#define TRBIDR_EL1_F			BIT(5)
+#define TRBIDR_EL1_P			BIT(4)
+#define TRBIDR_EL1_Align_MASK		GENMASK(3, 0)
+#define TRBIDR_EL1_Align_SHIFT		0
 
 #define SYS_PMINTENSET_EL1		sys_reg(3, 0, 9, 14, 1)
 #define SYS_PMINTENCLR_EL1		sys_reg(3, 0, 9, 14, 2)
diff --git a/arch/arm64/kvm/debug.c b/arch/arm64/kvm/debug.c
index 55f80fb93925..8725291cb00a 100644
--- a/arch/arm64/kvm/debug.c
+++ b/arch/arm64/kvm/debug.c
@@ -333,7 +333,7 @@ void kvm_arch_vcpu_load_debug_state_flags(struct kvm_vcpu *vcpu)
 
 	/* Check if we have TRBE implemented and available at the host */
 	if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_TraceBuffer_SHIFT) &&
-	    !(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_PROG))
+	    !(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_EL1_P))
 		vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_TRBE);
 }
 
diff --git a/drivers/hwtracing/coresight/coresight-trbe.h b/drivers/hwtracing/coresight/coresight-trbe.h
index 3743d9085355..d661b062293f 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.h
+++ b/drivers/hwtracing/coresight/coresight-trbe.h
@@ -95,17 +95,17 @@ static inline bool is_trbe_running(u64 trbsr)
 
 static inline bool get_trbe_flag_update(u64 trbidr)
 {
-	return trbidr & TRBIDR_FLAG;
+	return trbidr & TRBIDR_EL1_F;
 }
 
 static inline bool is_trbe_programmable(u64 trbidr)
 {
-	return !(trbidr & TRBIDR_PROG);
+	return !(trbidr & TRBIDR_EL1_P);
 }
 
 static inline int get_trbe_address_align(u64 trbidr)
 {
-	return (trbidr >> TRBIDR_ALIGN_SHIFT) & TRBIDR_ALIGN_MASK;
+	return (trbidr & TRBIDR_EL1_Align_MASK) >> TRBIDR_EL1_Align_SHIFT;
 }
 
 static inline unsigned long get_trbe_write_pointer(void)
-- 
2.25.1