From: Jisheng Zhang <jszhang@kernel.org>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/8] riscv: hwcap: make ISA extension ids can be used in asm
Date: Thu, 6 Oct 2022 15:08:13 +0800 [thread overview]
Message-ID: <20221006070818.3616-4-jszhang@kernel.org> (raw)
In-Reply-To: <20221006070818.3616-1-jszhang@kernel.org>
We will make use of ISA extension in asm files, so make the multi-letter
RISC-V ISA extension IDs macros rather than enums and move them and
those base ISA extension IDs to suitable place.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
arch/riscv/include/asm/hwcap.h | 45 +++++++++++++++++-----------------
1 file changed, 23 insertions(+), 22 deletions(-)
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index 6f59ec64175e..6cf445653911 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -12,20 +12,6 @@
#include <linux/bits.h>
#include <uapi/asm/hwcap.h>
-#ifndef __ASSEMBLY__
-#include <linux/jump_label.h>
-/*
- * This yields a mask that user programs can use to figure out what
- * instruction set this cpu supports.
- */
-#define ELF_HWCAP (elf_hwcap)
-
-enum {
- CAP_HWCAP = 1,
-};
-
-extern unsigned long elf_hwcap;
-
#define RISCV_ISA_EXT_a ('a' - 'a')
#define RISCV_ISA_EXT_c ('c' - 'a')
#define RISCV_ISA_EXT_d ('d' - 'a')
@@ -46,21 +32,36 @@ extern unsigned long elf_hwcap;
#define RISCV_ISA_EXT_BASE 26
/*
- * This enum represent the logical ID for each multi-letter RISC-V ISA extension.
+ * These macros represent the logical ID for each multi-letter RISC-V ISA extension.
* The logical ID should start from RISCV_ISA_EXT_BASE and must not exceed
* RISCV_ISA_EXT_MAX. 0-25 range is reserved for single letter
* extensions while all the multi-letter extensions should define the next
* available logical extension id.
*/
-enum riscv_isa_ext_id {
- RISCV_ISA_EXT_SSCOFPMF = RISCV_ISA_EXT_BASE,
- RISCV_ISA_EXT_SVPBMT,
- RISCV_ISA_EXT_ZICBOM,
- RISCV_ISA_EXT_ZIHINTPAUSE,
- RISCV_ISA_EXT_SSTC,
- RISCV_ISA_EXT_ID_MAX = RISCV_ISA_EXT_MAX,
+#define RISCV_ISA_EXT_SSCOFPMF 26
+#define RISCV_ISA_EXT_SVPBMT 27
+#define RISCV_ISA_EXT_ZICBOM 28
+#define RISCV_ISA_EXT_ZIHINTPAUSE 29
+#define RISCV_ISA_EXT_SSTC 30
+
+#define RISCV_ISA_EXT_ID_MAX RISCV_ISA_EXT_MAX
+
+
+#ifndef __ASSEMBLY__
+#include <linux/jump_label.h>
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this cpu supports.
+ */
+#define ELF_HWCAP (elf_hwcap)
+
+enum {
+ CAP_HWCAP = 1,
};
+extern unsigned long elf_hwcap;
+
+
/*
* This enum represents the logical ID for each RISC-V ISA extension static
* keys. We can use static key to optimize code path if some ISA extensions
--
2.37.2
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next prev parent reply other threads:[~2022-10-06 7:18 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-06 7:08 [PATCH 0/8] riscv: improve boot time isa extensions handling Jisheng Zhang
2022-10-06 7:08 ` [PATCH 1/8] riscv: move riscv_noncoherent_supported() out of ZICBOM probe Jisheng Zhang
2022-10-06 13:10 ` Andrew Jones
2022-10-06 17:44 ` Andrew Jones
2022-10-07 9:18 ` Heiko Stübner
2022-10-08 13:06 ` Conor Dooley
2022-10-08 13:59 ` Jisheng Zhang
2022-10-13 5:37 ` Conor Dooley
2022-10-06 7:08 ` [PATCH 2/8] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier Jisheng Zhang
2022-10-06 13:12 ` Andrew Jones
2022-10-07 9:38 ` Heiko Stübner
2022-10-06 7:08 ` Jisheng Zhang [this message]
2022-10-06 13:15 ` [PATCH 3/8] riscv: hwcap: make ISA extension ids can be used in asm Andrew Jones
2022-10-07 9:22 ` Heiko Stübner
2022-10-06 7:08 ` [PATCH 4/8] riscv: cpufeature: extend riscv_cpufeature_patch_func to all ISA extensions Jisheng Zhang
2022-10-06 13:31 ` Andrew Jones
2022-10-07 11:54 ` Heiko Stübner
2022-10-13 13:28 ` Heiko Stuebner
2022-10-06 7:08 ` [PATCH 5/8] riscv: introduce riscv_has_extension_[un]likely() Jisheng Zhang
2022-10-06 13:36 ` Andrew Jones
2022-10-06 7:08 ` [PATCH 6/8] riscv: fpu: switch has_fpu() to riscv_has_extension_likely() Jisheng Zhang
2022-10-06 13:36 ` Andrew Jones
2022-10-07 15:11 ` Heiko Stübner
2022-10-06 7:08 ` [PATCH 7/8] riscv: cpu_relax: switch " Jisheng Zhang
2022-10-06 13:28 ` kernel test robot
2022-10-06 13:37 ` Andrew Jones
2022-10-07 15:12 ` Heiko Stübner
2022-10-07 18:14 ` kernel test robot
2022-10-06 7:08 ` [PATCH 8/8] riscv: remove riscv_isa_ext_keys[] array and related usage Jisheng Zhang
2022-10-06 13:38 ` Andrew Jones
2022-10-07 15:12 ` Heiko Stübner
2022-10-13 16:20 ` [PATCH 0/8] riscv: improve boot time isa extensions handling Andrew Jones
2022-10-29 9:56 ` Andrew Jones
2022-10-29 11:38 ` Jisheng Zhang
2022-10-30 16:03 ` Jisheng Zhang
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