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[v5,03/16] riscv: hwprobe: export Zimop ISA extension

Message ID 20240517145302.971019-4-cleger@rivosinc.com
State New
Headers show
Series Add support for a few Zc* extensions, Zcmop and Zimop | expand

Commit Message

Clément Léger May 17, 2024, 2:52 p.m. UTC 
Export Zimop ISA extension through hwprobe.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
 Documentation/arch/riscv/hwprobe.rst  | 4 ++++
 arch/riscv/include/uapi/asm/hwprobe.h | 1 +
 arch/riscv/kernel/sys_hwprobe.c       | 1 +
 3 files changed, 6 insertions(+)
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Patch

diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 204cd4433af5..48be38e0b788 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -192,6 +192,10 @@  The following keys are defined:
        supported as defined in the RISC-V ISA manual starting from commit
        d8ab5c78c207 ("Zihintpause is ratified").
 
+  * :c:macro:`RISCV_HWPROBE_EXT_ZIMOP`: The Zimop May-Be-Operations extension is
+       supported as defined in the RISC-V ISA manual starting from commit
+       58220614a5f ("Zimop is ratified/1.0").
+
 * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
   information about the selected set of processors.
 
diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h
index 31c570cbd1c5..3b16a12204b1 100644
--- a/arch/riscv/include/uapi/asm/hwprobe.h
+++ b/arch/riscv/include/uapi/asm/hwprobe.h
@@ -60,6 +60,7 @@  struct riscv_hwprobe {
 #define		RISCV_HWPROBE_EXT_ZACAS		(1ULL << 34)
 #define		RISCV_HWPROBE_EXT_ZICOND	(1ULL << 35)
 #define		RISCV_HWPROBE_EXT_ZIHINTPAUSE	(1ULL << 36)
+#define		RISCV_HWPROBE_EXT_ZIMOP		(1ULL << 37)
 #define RISCV_HWPROBE_KEY_CPUPERF_0	5
 #define		RISCV_HWPROBE_MISALIGNED_UNKNOWN	(0 << 0)
 #define		RISCV_HWPROBE_MISALIGNED_EMULATED	(1 << 0)
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
index 969ef3d59dbe..fc6f4238f0b3 100644
--- a/arch/riscv/kernel/sys_hwprobe.c
+++ b/arch/riscv/kernel/sys_hwprobe.c
@@ -112,6 +112,7 @@  static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
 		EXT_KEY(ZACAS);
 		EXT_KEY(ZICOND);
 		EXT_KEY(ZIHINTPAUSE);
+		EXT_KEY(ZIMOP);
 
 		if (has_vector()) {
 			EXT_KEY(ZVBB);