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From: Alexander Kuleshov <kuleshovmail@gmail.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Alexander Kuleshov <kuleshovmail@gmail.com>
Subject: [PATCH 3/3] arm64/fpsimd: Use ID_AA64PFR0_EL1_.* macros
Date: Fri,  4 Sep 2015 00:12:59 +0600	[thread overview]
Message-ID: <1441303979-9535-1-git-send-email-kuleshovmail@gmail.com> (raw)
In-Reply-To: <1441303911-9421-1-git-send-email-kuleshovmail@gmail.com>

The 26d75e67c commit (arm64/cpufeature.h: Add macros for a cpu features
testing) provides set of macros for the testing processor's FP and advanced
SIMD features.

Let's use these macros instead of direct calculation.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
---
 arch/arm64/kernel/fpsimd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 44d6f75..12943a5 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -27,6 +27,7 @@
 
 #include <asm/fpsimd.h>
 #include <asm/cputype.h>
+#include <asm/cpufeature.h>
 
 #define FPEXC_IOF	(1 << 0)
 #define FPEXC_DZF	(1 << 1)
@@ -333,13 +334,13 @@ static int __init fpsimd_init(void)
 {
 	u64 pfr = read_cpuid(ID_AA64PFR0_EL1);
 
-	if (pfr & (0xf << 16)) {
+	if (ID_AA64PFR0_EL1_FP(pfr)) {
 		pr_notice("Floating-point is not implemented\n");
 		return 0;
 	}
 	elf_hwcap |= HWCAP_FP;
 
-	if (pfr & (0xf << 20))
+	if (ID_AA64PFR0_EL1_ADV_SIMD(pfr))
 		pr_notice("Advanced SIMD is not implemented\n");
 	else
 		elf_hwcap |= HWCAP_ASIMD;
-- 
2.5.0


WARNING: multiple messages have this Message-ID (diff)
From: kuleshovmail@gmail.com (Alexander Kuleshov)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] arm64/fpsimd: Use ID_AA64PFR0_EL1_.* macros
Date: Fri,  4 Sep 2015 00:12:59 +0600	[thread overview]
Message-ID: <1441303979-9535-1-git-send-email-kuleshovmail@gmail.com> (raw)
In-Reply-To: <1441303911-9421-1-git-send-email-kuleshovmail@gmail.com>

The 26d75e67c commit (arm64/cpufeature.h: Add macros for a cpu features
testing) provides set of macros for the testing processor's FP and advanced
SIMD features.

Let's use these macros instead of direct calculation.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
---
 arch/arm64/kernel/fpsimd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 44d6f75..12943a5 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -27,6 +27,7 @@
 
 #include <asm/fpsimd.h>
 #include <asm/cputype.h>
+#include <asm/cpufeature.h>
 
 #define FPEXC_IOF	(1 << 0)
 #define FPEXC_DZF	(1 << 1)
@@ -333,13 +334,13 @@ static int __init fpsimd_init(void)
 {
 	u64 pfr = read_cpuid(ID_AA64PFR0_EL1);
 
-	if (pfr & (0xf << 16)) {
+	if (ID_AA64PFR0_EL1_FP(pfr)) {
 		pr_notice("Floating-point is not implemented\n");
 		return 0;
 	}
 	elf_hwcap |= HWCAP_FP;
 
-	if (pfr & (0xf << 20))
+	if (ID_AA64PFR0_EL1_ADV_SIMD(pfr))
 		pr_notice("Advanced SIMD is not implemented\n");
 	else
 		elf_hwcap |= HWCAP_ASIMD;
-- 
2.5.0

  parent reply	other threads:[~2015-09-03 18:13 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-03 18:11 [PATCH 1/3] arm64/cpufeature.h: Add macros for a cpu features testing Alexander Kuleshov
2015-09-03 18:11 ` Alexander Kuleshov
2015-09-03 18:12 ` [PATCH 2/3] arm64/setup: Use ID_AA64ISAR0_EL1_.* macros Alexander Kuleshov
2015-09-03 18:12   ` Alexander Kuleshov
2015-09-04 11:26   ` Catalin Marinas
2015-09-04 11:26     ` Catalin Marinas
2016-11-07 16:30   ` Suzuki K Poulose
2016-11-07 16:30     ` Suzuki K Poulose
2015-09-03 18:12 ` Alexander Kuleshov [this message]
2015-09-03 18:12   ` [PATCH 3/3] arm64/fpsimd: Use ID_AA64PFR0_EL1_.* macros Alexander Kuleshov
2016-11-07 16:31   ` Suzuki K Poulose
2016-11-07 16:31     ` Suzuki K Poulose
2015-09-04 11:25 ` [PATCH 1/3] arm64/cpufeature.h: Add macros for a cpu features testing Catalin Marinas
2015-09-04 11:25   ` Catalin Marinas
2015-09-04 12:00 ` Suzuki K. Poulose
2015-09-04 12:00   ` Suzuki K. Poulose
2015-09-04 12:19   ` Alexander Kuleshov
2015-09-04 12:19     ` Alexander Kuleshov
2015-09-16 14:48     ` Suzuki K. Poulose
2015-09-16 14:48       ` Suzuki K. Poulose

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