On 9/15/25 5:40 AM, Max Chou wrote:
The Zvfbfa extension adds more complete BF16 vector compute support and requires the Zve32f and Zfbfmin extensions. Signed-off-by: Max Chou <[email protected]> ---
Reviewed-by: Daniel Henrique Barboza <[email protected]>
target/riscv/cpu.c | 1 + target/riscv/cpu_cfg_fields.h.inc | 1 + target/riscv/tcg/tcg-cpu.c | 8 ++++++++ 3 files changed, 10 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d055ddf4623..fc0614dadba 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -169,6 +169,7 @@ const RISCVIsaExtData isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(zve64f, PRIV_VERSION_1_10_0, ext_zve64f), ISA_EXT_DATA_ENTRY(zve64d, PRIV_VERSION_1_10_0, ext_zve64d), ISA_EXT_DATA_ENTRY(zve64x, PRIV_VERSION_1_10_0, ext_zve64x), + ISA_EXT_DATA_ENTRY(zvfbfa, PRIV_VERSION_1_13_0, ext_zvfbfa), ISA_EXT_DATA_ENTRY(zvfbfmin, PRIV_VERSION_1_12_0, ext_zvfbfmin), ISA_EXT_DATA_ENTRY(zvfbfwma, PRIV_VERSION_1_12_0, ext_zvfbfwma), ISA_EXT_DATA_ENTRY(zvfh, PRIV_VERSION_1_12_0, ext_zvfh), diff --git a/target/riscv/cpu_cfg_fields.h.inc b/target/riscv/cpu_cfg_fields.h.inc index e2d116f0dfb..f69be188e4a 100644 --- a/target/riscv/cpu_cfg_fields.h.inc +++ b/target/riscv/cpu_cfg_fields.h.inc @@ -96,6 +96,7 @@ BOOL_FIELD(ext_zvks) BOOL_FIELD(ext_zvksc) BOOL_FIELD(ext_zvksg) BOOL_FIELD(ext_zmmul) +BOOL_FIELD(ext_zvfbfa) BOOL_FIELD(ext_zvfbfmin) BOOL_FIELD(ext_zvfbfwma) BOOL_FIELD(ext_zvfh) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 78fb2791847..07b2b137934 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -704,6 +704,14 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) return; }+ if (cpu->cfg.ext_zvfbfa) {+ if (!cpu->cfg.ext_zve32f || !cpu->cfg.ext_zfbfmin) { + error_setg(errp, "Zvfbfa extension requires Zve32f extension " + "and Zfbfmin extension"); + return; + } + } + if ((cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinxmin) && !cpu->cfg.ext_zfinx) { error_setg(errp, "Zdinx/Zhinx/Zhinxmin extensions require Zfinx"); return;
