Thread (26 messages) 26 messages, 6 authors, 2024-06-11
STALE747d REVIEWED: 5 (5M)

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

From: Charlie Jenkins <hidden>
Date: 2024-06-10 04:45:48
Also in: linux-doc, linux-kselftest, linux-riscv, linux-sunxi, lkml
Subsystem: risc-v architecture, the rest · Maintainers: Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds

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 <redacted>
Signed-off-by: Charlie Jenkins <redacted>
---
 arch/riscv/include/asm/csr.h | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index 25966995da04..18e178d83401 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -216,6 +216,11 @@
 #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
-- 
2.44.0
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