From patchwork Mon Jun 12 21:04:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 691763 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C656CCA466 for ; Mon, 12 Jun 2023 21:08:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232304AbjFLVI3 (ORCPT ); Mon, 12 Jun 2023 17:08:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238260AbjFLVHz (ORCPT ); Mon, 12 Jun 2023 17:07:55 -0400 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C36C112A; Mon, 12 Jun 2023 14:05:01 -0700 (PDT) Received: from i53875b22.versanet.de ([83.135.91.34] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1q8oib-0005fR-NU; Mon, 12 Jun 2023 23:04:53 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: heiko@sntech.de, aou@eecs.berkeley.edu, herbert@gondor.apana.org.au, davem@davemloft.net, conor.dooley@microchip.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, christoph.muellner@vrull.eu, Heiko Stuebner Subject: [PATCH v5 2/4] RISC-V: add Zbkb extension detection Date: Mon, 12 Jun 2023 23:04:40 +0200 Message-Id: <20230612210442.1805962-3-heiko.stuebner@vrull.eu> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230612210442.1805962-1-heiko.stuebner@vrull.eu> References: <20230612210442.1805962-1-heiko.stuebner@vrull.eu> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Heiko Stuebner Add detection for Zbkb extension. Zbkb is part of the set of scalar cryptography extensions and provides bitmanip instructions for cryptography, with them being a "subset of the Zbb extension particularly useful for cryptography". Zbkb was ratified in january 2022. Expect code using the extension to pre-encode zbkb instructions, so don't introduce special toolchain requirements for now. Signed-off-by: Heiko Stuebner --- arch/riscv/include/asm/hwcap.h | 1 + arch/riscv/kernel/cpu.c | 1 + arch/riscv/kernel/cpufeature.c | 1 + 3 files changed, 3 insertions(+) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index e48ac52b9174..3d4820648a14 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -48,6 +48,7 @@ #define RISCV_ISA_EXT_SMAIA 35 #define RISCV_ISA_EXT_SSAIA 36 #define RISCV_ISA_EXT_ZBC 37 +#define RISCV_ISA_EXT_ZBKB 38 #define RISCV_ISA_EXT_MAX 64 #define RISCV_ISA_EXT_NAME_LEN_MAX 32 diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c index bbff98d4712a..a4ee61c18578 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -188,6 +188,7 @@ static struct riscv_isa_ext_data isa_ext_arr[] = { __RISCV_ISA_EXT_DATA(zicboz, RISCV_ISA_EXT_ZICBOZ), __RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE), __RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB), + __RISCV_ISA_EXT_DATA(zbkb, RISCV_ISA_EXT_ZBKB), __RISCV_ISA_EXT_DATA(zbc, RISCV_ISA_EXT_ZBC), __RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA), __RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA), diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index f46281f1e439..fceec9c60e07 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -262,6 +262,7 @@ void __init riscv_fill_hwcap(void) SET_ISA_EXT_MAP("svpbmt", RISCV_ISA_EXT_SVPBMT); SET_ISA_EXT_MAP("zbb", RISCV_ISA_EXT_ZBB); SET_ISA_EXT_MAP("zbc", RISCV_ISA_EXT_ZBC); + SET_ISA_EXT_MAP("zbkb", RISCV_ISA_EXT_ZBKB); SET_ISA_EXT_MAP("zicbom", RISCV_ISA_EXT_ZICBOM); SET_ISA_EXT_MAP("zicboz", RISCV_ISA_EXT_ZICBOZ); SET_ISA_EXT_MAP("zihintpause", RISCV_ISA_EXT_ZIHINTPAUSE);