From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, suzuki.poulose@arm.com,
catalin.marinas@arm.com,
Anshuman Khandual <anshuman.khandual@arm.com>,
linux-kernel@vger.kernel.org, maz@kernel.org, will@kernel.org
Subject: [PATCH V4 07/17] arm64/cpufeature: Add remaining feature bits in ID_PFR0 register
Date: Tue, 19 May 2020 15:10:44 +0530 [thread overview]
Message-ID: <1589881254-10082-8-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1589881254-10082-1-git-send-email-anshuman.khandual@arm.com>
Enable DIT and CSV2 feature bits in ID_PFR0 register as per ARM DDI 0487F.a
specification. Except RAS and AMU, all other feature bits are now enabled.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
arch/arm64/include/asm/sysreg.h | 3 +++
arch/arm64/kernel/cpufeature.c | 2 ++
2 files changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index b7f549d09c1c..02b1246e7dbf 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -796,6 +796,9 @@
#define ID_MMFR5_ETS_SHIFT 0
+#define ID_PFR0_DIT_SHIFT 24
+#define ID_PFR0_CSV2_SHIFT 16
+
#define ID_PFR2_SSBS_SHIFT 4
#define ID_PFR2_CSV3_SHIFT 0
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 3d5c31a7cd9d..c929aed9fc4b 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -425,6 +425,8 @@ static const struct arm64_ftr_bits ftr_id_isar6[] = {
};
static const struct arm64_ftr_bits ftr_id_pfr0[] = {
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_PFR0_DIT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_PFR0_CSV2_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0), /* State3 */
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0), /* State2 */
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* State1 */
--
2.20.1
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next prev parent reply other threads:[~2020-05-19 9:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 9:40 [PATCH V4 00/17] arm64/cpufeature: Introduce ID_PFR2, ID_DFR1, ID_MMFR5 and other changes Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 01/17] arm64/cpufeature: Add explicit ftr_id_isar0[] for ID_ISAR0 register Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 02/17] arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 03/17] arm64/cpufeature: Make doublelock a signed feature in ID_AA64DFR0 Anshuman Khandual
2020-05-19 10:44 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 04/17] arm64/cpufeature: Introduce ID_PFR2 CPU register Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 05/17] arm64/cpufeature: Introduce ID_DFR1 " Anshuman Khandual
2020-05-19 10:46 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 06/17] arm64/cpufeature: Introduce ID_MMFR5 " Anshuman Khandual
2020-05-19 10:50 ` Suzuki K Poulose
2020-05-19 9:40 ` Anshuman Khandual [this message]
2020-05-19 9:40 ` [PATCH V4 08/17] arm64/cpufeature: Add remaining feature bits in ID_MMFR4 register Anshuman Khandual
2020-05-19 10:53 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 09/17] arm64/cpufeature: Add remaining feature bits in ID_AA64ISAR0 register Anshuman Khandual
2020-05-19 10:56 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 10/17] arm64/cpufeature: Add remaining feature bits in ID_AA64PFR0 register Anshuman Khandual
2020-05-19 11:11 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 11/17] arm64/cpufeature: Add remaining feature bits in ID_AA64PFR1 register Anshuman Khandual
2020-05-19 11:13 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 12/17] arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR0 register Anshuman Khandual
2020-05-19 13:32 ` Suzuki K Poulose
2020-05-24 23:08 ` Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 13/17] arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR1 register Anshuman Khandual
2020-05-19 13:44 ` Suzuki K Poulose
2020-05-24 1:09 ` Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 14/17] arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR2 register Anshuman Khandual
2020-05-20 13:56 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 15/17] arm64/cpufeature: Add remaining feature bits in ID_AA64DFR0 register Anshuman Khandual
2020-05-20 13:57 ` Suzuki K Poulose
2020-05-24 1:08 ` Anshuman Khandual
2020-05-25 10:46 ` Suzuki K Poulose
2020-05-19 9:40 ` [PATCH V4 16/17] arm64/cpufeature: Replace all open bits shift encodings with macros Anshuman Khandual
2020-05-19 9:40 ` [PATCH V4 17/17] arm64/cpuinfo: Add ID_MMFR4_EL1 into the cpuinfo_arm64 context Anshuman Khandual
2020-05-20 13:58 ` Suzuki K Poulose
2020-05-21 15:19 ` [PATCH V4 00/17] arm64/cpufeature: Introduce ID_PFR2, ID_DFR1, ID_MMFR5 and other changes Will Deacon
2020-05-25 12:39 ` Anshuman Khandual
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