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Zvk vector crypto support (v5) #1303

Merged
merged 10 commits into from
Jun 20, 2023
Merged

Zvk vector crypto support (v5) #1303

merged 10 commits into from
Jun 20, 2023

Commits on Jun 19, 2023

  1. List extensions alphabetically in riscv_insn_list 

    The previous order lacks any obvious logic. Alphabetical order,
while making it difficult to create interesting groupings,
makes it easy to find which extensions are compiled in.

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos
    egouriou-rivos committed Jun 19, 2023
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  2. Zvk: extensions parsing 

    Zvk is the short name for the Vector Cryptography Instruction
Set Extension Specification being defined at
<https://github.com/riscv/riscv-crypto/tree/master/doc/vector>.

This commit adds support for parsing/enabling the Zvk extensions
(Zvbb, Zvbc, Zvkg, Zvkned, Zvknha, Zvknhb, Zvksed, Zvksh, Zvkt)
and the combo extensions (Zvkn, Zvknc, Zvkng, Zvks, Zvksc, Zvksg).

This is an early commit in a series implementing Zvk. No instructions
are actually defined here, only infastructure that will
support the coming extensions.

The encodings for Zvk instructions have some conflicts with Zpn
encodings. This commit marks those Zpn instructions as overlapping,
and adds checks to error out if conflicting extensions are enabled.

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos
    egouriou-rivos committed Jun 19, 2023
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  3. Zvk: Infrastructure for Zvk extensions, element group handling 

    Introduce types and macros useful across multiple Zvk sub-extensions,
including Zvbb and Zvbc. Those will be used by upcoming
per-sub-extension commits.

In particular we introduce "Element Group" types and loop macros handling
those element groups. The concept of element group is described in
<https://github.com/riscv/riscv-crypto/blob/master/doc/vector/riscv-crypto-vector-element-groups.adoc>.

Note that the element group access method is not implemented
for WORDS_BIGENDIAN setup. As such, isa_parser.cc is modified to emit
an error when WORDS_BIGENDIAN is defined and extensions using element
groups are enabled.

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos
    egouriou-rivos committed Jun 19, 2023
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  4. Zvk: Implement Zvbb, Vector Bit-manipulation for Cryptography 

    Implement the proposed instructions in Zvbb:
 - vandn.{vv,vx}, vector bitwise and-not
 - vbrev.v, vector bit reverse in element
 - vbrev8.v, vector bit reverse in bytes
 - vrev8.v, vector byte reverse
 - vctz.v, vector count trailing zeros
 - vclz.v, vector count leading zeros
 - vcpop.v, vector population count
 - vrol.{vv,vx}, vector rotate left
 - vror.{vi,vv,vx}, vector rotate right
 - vwsll.{vi,vv,vx} vector widening shift left logical

A new instruction field, 'zimm6', is introduced, encoded
in bits [15, 19] and [26].. It is used by "vror.vi" to encode
a shift immediate in [0, 63].

Co-authored-by: Raghav Gupta <rgupta@rivosinc.com>
Co-authored-by: Stanislaw Kardach <kda@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos @semihalf-kardach-stanislaw
    3 people committed Jun 19, 2023
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  5. Zvk: Implement Zvbc extension, vectory carryless multiplaction 

    Implement the Zvbc instructions
- vclmul.{vv,vx}, vector carryless multiply low
- vclmulh.{vv,vx}, vector carryless multiply high

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos
    egouriou-rivos committed Jun 19, 2023
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  6. Zvk: Implement Zvkg, Vector GCM/GMAC instruction 

    Implement the proposed instruction in Zvkg, vghmac.vv,
Vector Carryless Multiply Accumulate over GHASH Galois-Field.

The instruction performs one step of GHASH routine as described
in "NIST Special Publication 800-38D" a.k.a the AES-GCM specification.
The logic was written to closely track the pseudo-code
in the Zvk specification.

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
Co-authored-by: Kornel Duleba <mindal@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos @kornelduleba
    egouriou-rivos and kornelduleba committed Jun 19, 2023
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  7. Zvk: Implement Zvknh[ab], NIST Suite: Vector SHA-2 

    Implement the instructions part of the Zvknha and Zvknhb
sub-extensions:
 - vsha2ms.vv, message schedule
 - vsha2ch.vv / vsha2cl.vv, compression rounds

A header files for common macros is added.

Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos
    egouriou-rivos committed Jun 19, 2023
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  8. Zvk: Implement Zvkned, vector AES single round 

    Implement the Zvkned extension, "NIST Suite: Vector AES Encryption
& Decryption (Single Round)".
 - vaeskf1.vi: AES forward key scheduling, AES-128.
 - vaeskf2.vi: AES forward key scheduling, AES-256.
 - vaesz.vs: AES encryption/decryption, 0-th round.
 - vaesdm.{vs,vv}: AES decryption, middle rounds.
 - vaesdf.{vs,vv}: AES decryption, final round.
 - vaesem.{vs,vv}: AES encryption, middle rounds.
 - vaesef.{vs,vv}: AES encryption, final round.

An extension specific header containing common logic is added.

Co-authored-by: Stanislaw Kardach <kda@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos @semihalf-kardach-stanislaw
    egouriou-rivos and semihalf-kardach-stanislaw committed Jun 19, 2023
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  9. Zvk: Implement Zvksed, vector SM4 Block Cipher 

    Implement the Zvksed sub-extension, "ShangMi Suite: SM4 Block Cipher":
 - vsm4k.vi, vector SM4 key expansion,
 - vsm4r.{vs,vv}, vector SM4 rounds.

This also introduces a header for common vector SM4 logic.

Co-authored-by: Raghav Gupta <rgupta@rivosinc.com>
Co-authored-by: Albert Jakieła <aja@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos @semihalf-jakiela-albert
    3 people committed Jun 19, 2023
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  10. Zvk: Implement Zvksh, vector SM3 Hash Function 

    Implement the Zvksh sub-extension, "ShangMi Suite: SM3 Hash
Function Instructions":
 - vsm3me.vv, message expansion,
 - vsm3c.vi, compression rounds.

This also introduces a SM3 specific header for common logic.

Co-authored-by: Raghav Gupta <rgupta@rivosinc.com>
Co-authored-by: Albert Jakieła <aja@semihalf.com>
Co-authored-by: Kornel Dulęba <mindal@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
    @egouriou-rivos @semihalf-jakiela-albert @kornelduleba
    4 people committed Jun 19, 2023
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