From nobody Thu Dec 18 21:00:10 2025 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 4A8DDC77B73 for ; Mon, 1 May 2023 21:02:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232123AbjEAVCv (ORCPT ); Mon, 1 May 2023 17:02:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229653AbjEAVCs (ORCPT ); Mon, 1 May 2023 17:02:48 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F9BE1BDC for ; Mon, 1 May 2023 14:02:47 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id d2e1a72fcca58-642f5394651so528577b3a.3 for ; Mon, 01 May 2023 14:02:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20221208.gappssmtp.com; s=20221208; t=1682974967; x=1685566967; h=to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=fctEC41u76rTML4CTTx2jHE+S5zx89fZLmwJsiIL5So=; b=gg6yVxNsBS5x4HtlfKW+Oxy+TgP/Op/y9K/EVFxOQfNO52SSvoDUOn8N6xzYKeEfko vGLAVc8SOZP5ecmjgvNQ73oT3hEfuH4gdCcoq3iP1jAzcYe3Csi1mVG9F+8uXLKs8RSt +6+51X+rhf4ZAeVr5XOxmEtsG+7SZZz9Zgw70ccJubeB1Z62q2Nb+jbrZkOzzik+HSb2 DmWrnvOhIvsWqFWRWr8e0aXOqF7alJb1XW2wS5CQDUbX4hMcUCkgfmrX5ghL2eP97NK/ u7h42xhr5BUHkwH68wK9RFNhvluEjf5jdIJb7vFyec5n1J7vn/KVdjIjzNryxfjRXwIx X7AQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682974967; x=1685566967; h=to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fctEC41u76rTML4CTTx2jHE+S5zx89fZLmwJsiIL5So=; b=daMP15FdEYs4w4AZeLm6mvH7riqbQmnkXeVDY96KTQEpec7ciZQvJUoTTx4YFam6ol qdOQQ2jflKWO8/1x+jjHiQ6uWR5Mkqguq23gmf8INsUVIf05zB7vrFF9fCwmdI3afpOs dFmnhySWw7kkjhLJjC4e5E79nJE+XMDwnO8H/oqKhJweZRO3zsZVN0j7j09Nw6MnLtxl CAGDoysgzaFk3Xvy50RgzBV+/WdxVH8m5avzilynRBBuXCokxp0F829ScUAYUF+cU9x7 wF9fTd4mYH/MyLAZlqgkGKSUeCno5lNvXah8d+WJQ/qG/lsjiZG+vL8WurbbBw/ZZ3ki C8Ag== X-Gm-Message-State: AC+VfDxKZ1o5YZ27IMc7kqJMQGS2E2j9LU9WGGJv6OeMwVWy4hwsl1jb 6kkQ/NNk0Xkr1j+ElvnX3hbuzw== X-Google-Smtp-Source: ACHHUZ4Ou1HmHNgzOMSKxKB0s/OG17wi9Y6JHqnnmaYaJhcqoFkGF9PKAJGiOBUpRXnSdrb0GO4XXg== X-Received: by 2002:a05:6a00:1515:b0:63d:2aac:7b88 with SMTP id q21-20020a056a00151500b0063d2aac7b88mr23713638pfu.25.1682974967051; Mon, 01 May 2023 14:02:47 -0700 (PDT) Received: from [127.0.1.1] ([2601:1c2:1800:f680:1f1:1360:eb9b:387]) by smtp.gmail.com with ESMTPSA id i12-20020a056a00224c00b0063d670ad850sm20899151pfu.92.2023.05.01.14.02.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 14:02:46 -0700 (PDT) From: Drew Fustini Date: Mon, 01 May 2023 14:05:21 -0700 Subject: [PATCH RFC v2 1/2] RISC-V: Detect the Ssqosid extension MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20230430-riscv-cbqri-rfc-v2-v2-1-8e3725c4a473@baylibre.com> References: <20230430-riscv-cbqri-rfc-v2-v2-0-8e3725c4a473@baylibre.com> In-Reply-To: <20230430-riscv-cbqri-rfc-v2-v2-0-8e3725c4a473@baylibre.com> To: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Palmer Dabbelt , Paul Walmsley , Conor Dooley , Ved Shanbhogue , Atish Patra , =?utf-8?q?Bj=C3=B6rn_T=C3=B6pel?= , James Morse , =?utf-8?q?Kornel_Dul=C4=99ba?= , Adrien Ricciardi , Drew Fustini X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1682975186; l=2210; i=dfustini@baylibre.com; s=20230430; h=from:subject:message-id; bh=HJmdwjdD3oLAOaRVmOzd9g/qKji+rF7c3nA/VaibzyY=; b=ABdeu5blg0kipm7ff+tcUDspwu9/Irg+HwQba+62HXEonmYZL76N4bgM+Fsa4Ab/8OoFAS9k2 HPZVbMh27zGA7a1Hz2eau+u3sSuY3Bohb2Wx6PMWXeBvQksg/b7W95y X-Developer-Key: i=dfustini@baylibre.com; a=ed25519; pk=p3GKE9XFmjhwAayAHG4U108yag7V8xQVd4zJLdW0g7g= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kornel Dul=C4=99ba Detect the Ssqosid extension (Supervisor-mode Quality of Service ID) as defined in the CBQRI (Capacity and Bandwidth QoS Register Interface) specification. Link: https://github.com/riscv-non-isa/riscv-cbqri/blob/main/riscv-cbqri.pdf Signed-off-by: Kornel Dul=C4=99ba [dfustini: rebase from v6.0 to v6.3] Signed-off-by: Drew Fustini --- arch/riscv/include/asm/hwcap.h | 2 ++ arch/riscv/kernel/cpu.c | 1 + arch/riscv/kernel/cpufeature.c | 1 + 3 files changed, 4 insertions(+) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 9af793970855..6dd717030723 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -44,6 +44,8 @@ #define RISCV_ISA_EXT_ZIHINTPAUSE 32 #define RISCV_ISA_EXT_SVNAPOT 33 #define RISCV_ISA_EXT_ZICBOZ 34 +#define RISCV_ISA_EXT_SSQOSID 35 + =20 #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 3df38052dcbd..29c4d458377a 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -186,6 +186,7 @@ static struct riscv_isa_ext_data isa_ext_arr[] =3D { __RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE), __RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB), __RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF), + __RISCV_ISA_EXT_DATA(ssqosid, RISCV_ISA_EXT_SSQOSID), __RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC), __RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL), __RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT), diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 52585e088873..c824698b2031 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -229,6 +229,7 @@ void __init riscv_fill_hwcap(void) } else { /* sorted alphabetically */ SET_ISA_EXT_MAP("sscofpmf", RISCV_ISA_EXT_SSCOFPMF); + SET_ISA_EXT_MAP("ssqosid", RISCV_ISA_EXT_SSQOSID); SET_ISA_EXT_MAP("sstc", RISCV_ISA_EXT_SSTC); SET_ISA_EXT_MAP("svinval", RISCV_ISA_EXT_SVINVAL); SET_ISA_EXT_MAP("svnapot", RISCV_ISA_EXT_SVNAPOT); --=20 2.34.1