From: Heiko Stuebner <heiko.stuebner@...>
Date: Tue, 31 Jan 2023 11:52:46 +0100
Add detection for some extensions of the vector-crypto specification, namely
- Zvkb: Vector Bit-manipulation used in Cryptography
- Zvkg: Vector GCM/GMAC
- Zvknha and Zvknhb: NIST Algorithm Suite
- Zvkns: AES-128, AES-256 Single Round Suite
- Zvksed: ShangMi Algorithm Suite
- Zvksh: ShangMi Algorithm Suite
As their use is very specific and will likely be limited to special places
we expect current code to just pre-encode those instructions, so right now
we don't introduce toolchain requirements.
Signed-off-by: Heiko Stuebner <heiko.stuebner@...>
arch/riscv/include/asm/hwcap.h | 7 +++++++
arch/riscv/kernel/cpu.c | 7 +++++++
arch/riscv/kernel/cpufeature.c | 7 +++++++
3 files changed, 21 insertions(+)
@@ -45,6 +45,13 @@
#define RISCV_ISA_EXT_ZIHINTPAUSE 32
#define RISCV_ISA_EXT_ZBC 33
#define RISCV_ISA_EXT_ZBKB 34
+#define RISCV_ISA_EXT_ZVKB 35
+#define RISCV_ISA_EXT_ZVKG 36
+#define RISCV_ISA_EXT_ZVKNED 37
+#define RISCV_ISA_EXT_ZVKNHA 38
+#define RISCV_ISA_EXT_ZVKNHB 39
+#define RISCV_ISA_EXT_ZVKSED 40
+#define RISCV_ISA_EXT_ZVKSH 41
#define RISCV_ISA_EXT_MAX 64
#define RISCV_ISA_EXT_NAME_LEN_MAX 32
@@ -190,6 +190,13 @@ static struct riscv_isa_ext_data isa_ext_arr[] = {
__RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB),
__RISCV_ISA_EXT_DATA(zbc, RISCV_ISA_EXT_ZBC),
__RISCV_ISA_EXT_DATA(zbkb, RISCV_ISA_EXT_ZBKB),
+ __RISCV_ISA_EXT_DATA(zvkb, RISCV_ISA_EXT_ZVKB),
+ __RISCV_ISA_EXT_DATA(zvkg, RISCV_ISA_EXT_ZVKG),
+ __RISCV_ISA_EXT_DATA(zvkned, RISCV_ISA_EXT_ZVKNED),
+ __RISCV_ISA_EXT_DATA(zvknha, RISCV_ISA_EXT_ZVKNHA),
+ __RISCV_ISA_EXT_DATA(zvknhb, RISCV_ISA_EXT_ZVKNHB),
+ __RISCV_ISA_EXT_DATA(zvksed, RISCV_ISA_EXT_ZVKSED),
+ __RISCV_ISA_EXT_DATA(zvksh, RISCV_ISA_EXT_ZVKSH),
__RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF),
__RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC),
__RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL),
@@ -232,6 +232,13 @@ void __init riscv_fill_hwcap(void)
SET_ISA_EXT_MAP("zbkb", RISCV_ISA_EXT_ZBKB);
SET_ISA_EXT_MAP("zicbom", RISCV_ISA_EXT_ZICBOM);
SET_ISA_EXT_MAP("zihintpause", RISCV_ISA_EXT_ZIHINTPAUSE);
+ SET_ISA_EXT_MAP("zvkb", RISCV_ISA_EXT_ZVKB);
+ SET_ISA_EXT_MAP("zvkg", RISCV_ISA_EXT_ZVKG);
+ SET_ISA_EXT_MAP("zvkned", RISCV_ISA_EXT_ZVKNED);
+ SET_ISA_EXT_MAP("zvknha", RISCV_ISA_EXT_ZVKNHA);
+ SET_ISA_EXT_MAP("zvknhb", RISCV_ISA_EXT_ZVKNHB);
+ SET_ISA_EXT_MAP("zvksed", RISCV_ISA_EXT_ZVKSED);
+ SET_ISA_EXT_MAP("zvksh", RISCV_ISA_EXT_ZVKSH);
}
#undef SET_ISA_EXT_MAP
}