[v4,09/16] RISC-V: define the elements of the VCSR vector CSR

Commit Message

Charlie Jenkins April 26, 2024, 9:37 p.m. UTC

From: Heiko Stuebner <[e-mail]>

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 <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Signed-off-by: Heiko Stuebner <[e-mail]>
Signed-off-by: Charlie Jenkins <[e-mail]>
---
 arch/riscv/include/asm/csr.h | 5 +++++
 1 file changed, 5 insertions(+)

Patch

diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index 2468c55933cd..13bc99c995d1 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -215,6 +215,11 @@ 
 #define SMSTATEEN0_SSTATEEN0_SHIFT	63
 #define SMSTATEEN0_SSTATEEN0		(_ULL(1) << SMSTATEEN0_SSTATEEN0_SHIFT)
 
+/* VCSR flags */
+#define VCSR_VXRM_MASK			3
+#define VCSR_VXRM_SHIFT			1
+#define VCSR_VXSAT_MASK			1
+
 /* symbolic CSR names: */
 #define CSR_CYCLE		0xc00
 #define CSR_TIME		0xc01