| Message ID | 20211015074627.3957162-73-frank.chang@sifive.com |
|---|---|
| State | New |
| Headers | show |
| Series | support vector extension v1.0 | expand |
On Fri, Oct 15, 2021 at 6:43 PM <frank.chang@sifive.com> wrote: > > From: Frank Chang <frank.chang@sifive.com> > > Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > > -- > --- > target/riscv/cpu.h | 2 +- > target/riscv/insn_trans/trans_rvv.c.inc | 4 ++-- > target/riscv/vector_helper.c | 2 +- > 3 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h > index 9b2af4e4d0e..49eece111e2 100644 > --- a/target/riscv/cpu.h > +++ b/target/riscv/cpu.h > @@ -101,7 +101,7 @@ typedef struct CPURISCVState CPURISCVState; > #include "pmp.h" > #endif > > -#define RV_VLEN_MAX 256 > +#define RV_VLEN_MAX 1024 > > FIELD(VTYPE, VLMUL, 0, 3) > FIELD(VTYPE, VSEW, 3, 3) > diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc > index 92a23b52e49..dcb96c954ec 100644 > --- a/target/riscv/insn_trans/trans_rvv.c.inc > +++ b/target/riscv/insn_trans/trans_rvv.c.inc > @@ -567,8 +567,8 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data, > base = get_gpr(s, rs1, EXT_NONE); > > /* > - * As simd_desc supports at most 256 bytes, and in this implementation, > - * the max vector group length is 2048 bytes. So split it into two parts. > + * As simd_desc supports at most 2048 bytes, and in this implementation, > + * the max vector group length is 4096 bytes. So split it into two parts. > * > * The first part is vlen in bytes, encoded in maxsz of simd_desc. > * The second part is lmul, encoded in data of simd_desc. > diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c > index 37b2451bd05..70ddc55e16b 100644 > --- a/target/riscv/vector_helper.c > +++ b/target/riscv/vector_helper.c > @@ -124,7 +124,7 @@ static inline int32_t vext_lmul(uint32_t desc) > static inline uint32_t vext_max_elems(uint32_t desc, uint32_t esz) > { > /* > - * As simd_desc support at most 256 bytes, the max vlen is 256 bits. > + * As simd_desc support at most 2048 bytes, the max vlen is 1024 bits. > * so vlen in bytes (vlenb) is encoded as maxsz. > */ > uint32_t vlenb = simd_maxsz(desc); > -- > 2.25.1 > >
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 9b2af4e4d0e..49eece111e2 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -101,7 +101,7 @@ typedef struct CPURISCVState CPURISCVState; #include "pmp.h" #endif -#define RV_VLEN_MAX 256 +#define RV_VLEN_MAX 1024 FIELD(VTYPE, VLMUL, 0, 3) FIELD(VTYPE, VSEW, 3, 3) diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc index 92a23b52e49..dcb96c954ec 100644 --- a/target/riscv/insn_trans/trans_rvv.c.inc +++ b/target/riscv/insn_trans/trans_rvv.c.inc @@ -567,8 +567,8 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data, base = get_gpr(s, rs1, EXT_NONE); /* - * As simd_desc supports at most 256 bytes, and in this implementation, - * the max vector group length is 2048 bytes. So split it into two parts. + * As simd_desc supports at most 2048 bytes, and in this implementation, + * the max vector group length is 4096 bytes. So split it into two parts. * * The first part is vlen in bytes, encoded in maxsz of simd_desc. * The second part is lmul, encoded in data of simd_desc. diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 37b2451bd05..70ddc55e16b 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -124,7 +124,7 @@ static inline int32_t vext_lmul(uint32_t desc) static inline uint32_t vext_max_elems(uint32_t desc, uint32_t esz) { /* - * As simd_desc support at most 256 bytes, the max vlen is 256 bits. + * As simd_desc support at most 2048 bytes, the max vlen is 1024 bits. * so vlen in bytes (vlenb) is encoded as maxsz. */ uint32_t vlenb = simd_maxsz(desc);