[PATCH v11 01/40] arm64: Define CPACR_EL1_FPEN similarly to other floating point controls
Mark Brown
broonie at kernel.org
Mon Feb 7 07:20:30 PST 2022
The base floating point, SVE and SME all have enable controls for EL0 and
EL1 in CPACR_EL1 which have a similar layout and function. Currently the
basic floating point enable FPEN is defined differently to the SVE control,
specified as a single define in kvm_arm.h rather than in sysreg.h. Move the
define to sysreg.h and provide separate EL0 and EL1 control bits so code
managing the different floating point enables can look consistent.
Signed-off-by: Mark Brown <broonie at kernel.org>
---
arch/arm64/include/asm/kvm_arm.h | 1 -
arch/arm64/include/asm/sysreg.h | 4 ++++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 01d47c5886dc..eec790842fe2 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -355,7 +355,6 @@
ECN(SOFTSTP_CUR), ECN(WATCHPT_LOW), ECN(WATCHPT_CUR), \
ECN(BKPT32), ECN(VECTOR32), ECN(BRK64)
-#define CPACR_EL1_FPEN (3 << 20)
#define CPACR_EL1_TTA (1 << 28)
#define CPACR_EL1_DEFAULT (CPACR_EL1_FPEN | CPACR_EL1_ZEN_EL1EN)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 898bee0004ae..1da4c43d597d 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -1097,6 +1097,10 @@
#define ZCR_ELx_LEN_SIZE 9
#define ZCR_ELx_LEN_MASK 0x1ff
+#define CPACR_EL1_FPEN_EL1EN (BIT(20)) /* enable EL1 access */
+#define CPACR_EL1_FPEN_EL0EN (BIT(21)) /* enable EL0 access, if EL1EN set */
+#define CPACR_EL1_FPEN (CPACR_EL1_FPEN_EL1EN | CPACR_EL1_FPEN_EL0EN)
+
#define CPACR_EL1_ZEN_EL1EN (BIT(16)) /* enable EL1 access */
#define CPACR_EL1_ZEN_EL0EN (BIT(17)) /* enable EL0 access, if EL1EN set */
#define CPACR_EL1_ZEN (CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN)
--
2.30.2
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