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[v5,06/13] RISC-V: define the elements of the VCSR vector CSR

Message ID 20240719-xtheadvector-v5-6-4b485fc7d55f@rivosinc.com (mailing list archive)
State New
Headers show
Series riscv: Add support for xtheadvector | expand

Commit Message

Charlie Jenkins July 19, 2024, 4:19 p.m. UTC 
From: Heiko Stuebner <heiko@sntech.de>

The VCSR CSR contains two elements VXRM[2:1] and VXSAT[0].

Define constants for those to access the elements in a readable way.

Acked-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
---
 arch/riscv/include/asm/csr.h | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index 25966995da04..3eeb07d73065 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -300,6 +300,10 @@ 
 #define CSR_STIMECMP		0x14D
 #define CSR_STIMECMPH		0x15D
 
+#define VCSR_VXRM_MASK			3
+#define VCSR_VXRM_SHIFT			1
+#define VCSR_VXSAT_MASK			1
+
 /* Supervisor-Level Window to Indirectly Accessed Registers (AIA) */
 #define CSR_SISELECT		0x150
 #define CSR_SIREG		0x151