From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2B545E77187 for ; Wed, 18 Dec 2024 13:33:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=yXIelB7sEaBiT7CL2gREWJlS1v88RCJHPJKNoy1JFHs=; b=2ZpM6n33JxyRv2 4BY/FGAM8gu+5gq9eW5kTPpa4PeSfnknXfgG5vgQYQkH6TNoQ/KCikkmKAa/djblZkQbcDlIIq6JP KajsHAphtTurkYT9DJVPtGF/cl81NweeojDWHdN5jjtTtTmsYo/Sn5+C9tqE8FTX7NhfbujpsfIm+ DZX7fUX5JgTLvooYPT8U6ZHdIDJeJbOVbowhReWuTNu4agscnJd/csGJd9cKD5+Y40/xomX7jVJh4 wzlUaRtxANHKs8DqTSpLAeCAGoBYr7n1V7jeqJTVZzs+Yu0bP0uwP5uAozbYUBLc1r7q7uXmAIeJQ geU4K8vnVNPv1e7GBL/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tNuBQ-0000000GjxK-3cJz; Wed, 18 Dec 2024 13:33:48 +0000 Received: from mail-ed1-x535.google.com ([2a00:1450:4864:20::535]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tNuBO-0000000Gjwb-1TuJ for linux-riscv@lists.infradead.org; Wed, 18 Dec 2024 13:33:47 +0000 Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-5d3f65844deso10714613a12.0 for ; Wed, 18 Dec 2024 05:33:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1734528824; x=1735133624; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=F04qCBUVVoN6U8u4xH7kBwCsJkFMNNfZymSECrRf1P8=; b=TwyKxJumHaHGl91byfC4MgOGpCxnFS7y3yrtKiuRRABnbItYkGJgVyk7Guw7dZPjdr /NXR8OvnkzUTzm6bgAlAGCOrIuvXSTGaFMQWQ/Q8ShzIUBBhveERPplsWOVS6/4g8299 KVlFLHNkgZsBSOHzPtC1HYwhT/yS5VAzq9jxNAv/03QdX5Ljn6Nfzr0qNVnv1BNq+73M 4ZZr9YH+R9SRiwsUsq9ARzcpp/h3EC2WCspmtVRCm3L/QPHZdi8iIy9QON38cPk2C3LU CINgETU82mri9Xh83Hh3nndTqUaOdlNn4KkiW0uUvcM4zvWjFHq9ThpUVp4rWtmMmx4p IAjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734528824; x=1735133624; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=F04qCBUVVoN6U8u4xH7kBwCsJkFMNNfZymSECrRf1P8=; b=MFt+SaQqot4AA2ueVj0Rd3lxYDOh4kvxSDxk23rLbj0gI9YziXYiy+FNg+J78FrzCs l7M+vYXlPW1SJ363I9OyyiNXQc6PHBBjbmqvs96NINBWd5IaoRp1OtMTaGuhNHioEjFo 5JeBomTzoo6hxDMUurgfZb36xMx+mKzrwc+I9tQLGlVaBZ2WLWIowlrAplhxGfNRiu4F RcS+oeRSzcxertX8wMJndyM3viEB4Rdr1eBU9ljO4lCXXNdLMk3rptBv0UbCwZtlS6X/ dl5Umc2xSNecdbulECukILChvF3PtQyTRCM8iyKFV1d/cdj01EJph5DBX3jWJ84ZFwib bi7A== X-Gm-Message-State: AOJu0Yw2XszjowWFP+YDVrnV5JI/srZyz71d+F3+wneMF4A26tmfd482 5GLQHQ5TOAhusZGQx1tKNEFg5PV4UKnYdOyP16zQnKrODMCkQRnrORZCvABX7YY= X-Gm-Gg: ASbGncvP8I/Ha6LeCP/4neWQf8FeTokk78yQBw2pNrcPSGnd+FqvO1yfl7CTePRc8zM +8/dV7y/pq0N5jIGg0uvddqOkfJirE3JdkAbbpQp/1vm7oz/cqFidwncV2L0DWuwM5YacVHmdnJ XL6B2e44/Zez4r6+jpzk5/14MH1r320DQPSlzydl+3QQRpKNDNbVGDWUqVSchVznwHlA9jFWmQv 7fsTCXsMHtuFffpIQB3cdOxtnNBGOU0ExPErWlo0QfUb0HBoPtUye4eTIjzn46WhQ== X-Google-Smtp-Source: AGHT+IHvX5X6BqHRSMeBGrCGLrIORFdCEP7U5u82MX7KqOksIbsBDW9rkN+UXFaQ/V6EmbhAHdKVrg== X-Received: by 2002:a17:906:309a:b0:aac:d8:13d1 with SMTP id a640c23a62f3a-aac00d813f8mr82990466b.13.1734528823548; Wed, 18 Dec 2024 05:33:43 -0800 (PST) Received: from localhost.localdomain ([79.175.114.8]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aab96005f89sm562706166b.35.2024.12.18.05.33.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2024 05:33:42 -0800 (PST) From: Aleksandar Rikalo To: linux-riscv@lists.infradead.org Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Andrew Jones , =?UTF-8?q?Christoph=20M=C3=BCllner?= , Aleksandar Rikalo , linux-kernel@vger.kernel.org, Djordje Todorovic Subject: [PATCH] riscv: Fix the PAUSE Opcode for MIPS P8700. Date: Wed, 18 Dec 2024 14:33:40 +0100 Message-Id: <20241218133340.51003-1-arikalo@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241218_053346_407850_BC1D87DA X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org RnJvbTogUmFqIFZpc2h3YW5hdGhhbjQgPHJ2aXNod2FuYXRoYW5AbWlwcy5jb20+CgpUaGUgcmlz Y3YgTUlQUyBQODcwMCB1c2VzIGEgZGlmZmVyZW50IG9wY29kZSBmb3IgUEFVU0UuCkl0IGlzIGEg 4oCYaGludOKAmSBlbmNvZGluZyBvZiB0aGUgU0xMSSBpbnN0cnVjdGlvbiwgd2l0aCByZD0wLCBy czE9MCBhbmQKaW1tPTUuIEl0IHdpbGwgYmVoYXZlIGFzIGEgTk9QIGluc3RydWN0aW9uIGlmIG5v IGFkZGl0aW9uYWwgYmVoYXZpb3IKYmV5b25kIHRoYXQgb2YgU0xMSSBpcyBpbXBsZW1lbnRlZC4K ClNpZ25lZC1vZmYtYnk6IFJhaiBWaXNod2FuYXRoYW40IDxydmlzaHdhbmF0aGFuQG1pcHMuY29t PgpTaWduZWQtb2ZmLWJ5OiBBbGVrc2FuZGFyIFJpa2FsbyA8YXJpa2Fsb0BnbWFpbC5jb20+Ci0t LQogYXJjaC9yaXNjdi9LY29uZmlnICAgICAgICAgICAgICAgIHwgMTIgKysrKysrKysrKysrCiBh cmNoL3Jpc2N2L2luY2x1ZGUvYXNtL2luc24tZGVmLmggfCAgNSArKysrKwogMiBmaWxlcyBjaGFu Z2VkLCAxNyBpbnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9LY29uZmlnIGIv YXJjaC9yaXNjdi9LY29uZmlnCmluZGV4IGQ0YTdjYTAzODhjMC4uMDdhNzdmYTBhMDE0IDEwMDY0 NAotLS0gYS9hcmNoL3Jpc2N2L0tjb25maWcKKysrIGIvYXJjaC9yaXNjdi9LY29uZmlnCkBAIC03 MTYsNiArNzE2LDE4IEBAIGNvbmZpZyBSSVNDVl9JU0FfWkFDQVMKIAogCSAgSWYgeW91IGRvbid0 IGtub3cgd2hhdCB0byBkbyBoZXJlLCBzYXkgWS4KIAorY29uZmlnIFJJU0NWX01JUFNfUDg3MDBf UEFVU0VfT1BDT0RFX0ZJWAorCWJvb2wgIkZpeCB0aGUgUEFVU0UgT3Bjb2RlIGZvciBNSVBTIFA4 NzAwIgorCWRlZmF1bHQgbgorCWhlbHAKKwkgICBUaGUgUklTQ1YgTUlQUyBQODcwMCB1c2VzIGEg ZGlmZmVyZW50IG9wY29kZSBmb3IgUEFVU0UuCisJICAgSXQgaXMgYSAnaGludCcgZW5jb2Rpbmcg b2YgdGhlIFNMTEkgaW5zdHJ1Y3Rpb24sCisJICAgd2l0aCByZD0wLCByczE9MCBhbmQgaW1tPTUu IEl0IHdpbGwgYmVoYXZlIGFzIGEgTk9QCisJICAgaW5zdHJ1Y3Rpb24gaWYgbm8gYWRkaXRpb25h bCBiZWhhdmlvciBiZXlvbmQgdGhhdCBvZgorCSAgIFNMTEkgaXMgaW1wbGVtZW50ZWQuCisKKwkg ICBJZiB5b3UgYXJlIG5vdCB1c2luZyB0aGUgUDg3MDAgcHJvY2Vzc29yLCBzYXkgbi4KKwogY29u ZmlnIFRPT0xDSEFJTl9IQVNfWkJCCiAJYm9vbAogCWRlZmF1bHQgeQpkaWZmIC0tZ2l0IGEvYXJj aC9yaXNjdi9pbmNsdWRlL2FzbS9pbnNuLWRlZi5oIGIvYXJjaC9yaXNjdi9pbmNsdWRlL2FzbS9p bnNuLWRlZi5oCmluZGV4IDlhOTEzMDEwY2RkOS4uNzkzZWVkZGUzNTE2IDEwMDY0NAotLS0gYS9h cmNoL3Jpc2N2L2luY2x1ZGUvYXNtL2luc24tZGVmLmgKKysrIGIvYXJjaC9yaXNjdi9pbmNsdWRl L2FzbS9pbnNuLWRlZi5oCkBAIC0xOTYsNyArMTk2LDEyIEBACiAJSU5TTl9JKE9QQ09ERV9NSVND X01FTSwgRlVOQzMoMiksIF9fUkQoMCksCQlcCiAJICAgICAgIFJTMShiYXNlKSwgU0lNTTEyKDQp KQogCisjaWZuZGVmIENPTkZJR19SSVNDVl9NSVBTX1A4NzAwX1BBVVNFX09QQ09ERV9GSVgKICNk ZWZpbmUgUklTQ1ZfUEFVU0UJIi40Ynl0ZSAweDEwMDAwMGYiCisjZWxzZQorI2RlZmluZSBSSVND Vl9QQVVTRQkiLjRieXRlIDB4MDA1MDEwMTMiCisjZW5kaWYKKwogI2RlZmluZSBaQVdSU19XUlNf TlRPCSIuNGJ5dGUgMHgwMGQwMDA3MyIKICNkZWZpbmUgWkFXUlNfV1JTX1NUTwkiLjRieXRlIDB4 MDFkMDAwNzMiCiAKLS0gCjIuMjUuMQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0 cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtcmlzY3YK From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f54.google.com (mail-ej1-f54.google.com [209.85.218.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7B8217C219 for ; Wed, 18 Dec 2024 13:33:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.54 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734528827; cv=none; b=ru+5i8Hy9zqgdMwet466tlg/w+byVykXNegA+SEWpYAdnk8xuSVTkZ5PYX643RzjfIF2zCLPIQRNlSiF+Z5wpCrbvKNwLPvY/ooLslMNbuXawYg12docai5zPbJ4p1IkpFAVJG4rhH/YffXNnhb5UkdYzakQgw7nh59ooAiAg/M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734528827; c=relaxed/simple; bh=fFwdiNewKJhftWftgTVAIC5phcT2yuk3pgLzZzgWRQY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:Content-Type; b=cZIeIxXIg481KGoKroJabb20/N235bGqp/QOJA2dIAdAqCul8x32S2tDaQB/vDnLi2olTPtktj855ZPGs+v2d55Re4y/57GSKQOhoXmGPtwiCMz6wvdK6+u30XIHUghxRvBfAQngRqQ9T541KKW94UsvMb0gSGSO7XCM2HHFh00= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=W7Qwd/xg; arc=none smtp.client-ip=209.85.218.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="W7Qwd/xg" Received: by mail-ej1-f54.google.com with SMTP id a640c23a62f3a-aa69077b93fso971586466b.0 for ; Wed, 18 Dec 2024 05:33:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1734528824; x=1735133624; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=F04qCBUVVoN6U8u4xH7kBwCsJkFMNNfZymSECrRf1P8=; b=W7Qwd/xgY4A1RIIzByGwAghouRO4+bOxrma0fGBJlkhRPjuXvd+5sLREjhCPPEo3y/ +GZswqbI0hYFCe1mClfUP1KsVCk5AJKkwVVHHBD33BNC/PXsqwxnQCQQYfbTCTJYDBrl N8s9UfRSnXZR20iCG+Qv4NdTtY1cSHodk6WCBm/4ReBcsfT5AY3yHKbYWXAEGyeY0oGA UZkWW02Skk4rSdi1hI3OHrnwW+CdNIAdaNhJ7KbLGUB7WWTYUXPLiOEb44w4UafABjwr axqELYpwlbeiyMrpMbn9aPcLIkYvsuov0xJVUiFmcdDRZbyjA41UZGcyJVBS1Cn6+eWE 36mA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734528824; x=1735133624; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=F04qCBUVVoN6U8u4xH7kBwCsJkFMNNfZymSECrRf1P8=; b=vTa+Kr5SSXC4yf6K6314KVPHynxZ4NwhasCpjCP0Sqi7W15cYrpQxpXBvUgHK0S9LC 7Q+j3G1pHcLWi9hL9rGodlO5bvShoWGOaPSL6hUVIkQGqAUXYSTZd7m0xKR4cIuUmfvD MTBHudrsfLuev2oThfA65q4/XH2GWGwCSAL63Uptt3zfVmtSeyg8OGAxLnL6+YW4L2/c oakbO7Wj7I13KZYCBdVeTdIycfwlSOuHQ9Ne9Id1IwYycSn/TvdwqUuyyhgyxOKRWQG4 dx3J7SnTi7zZhxEClD+oN+kpELWt6GxtZUcUErTd9sHUM8CaTc7SRKOVSIJRd/niJWY1 JUeQ== X-Forwarded-Encrypted: i=1; AJvYcCXOV69/8J6JuyKbbZyWzoM184GCk80dLzTQlb860qj2RYAg/ZK5Bnn7ObI/JmuxDz8fzuOPrkV7GYrkgyA=@vger.kernel.org X-Gm-Message-State: AOJu0Yxixv3AfAKLQ/I6EJESICubGT/u4XeDaotY+mrA+jCu7gmUj1mH dbwZXIrQbXZg5t1n/KWFCszTces/EAT5koN/rQKIhgG1PuhLdlyK X-Gm-Gg: ASbGncu3OleYB5Xsx27rsZIE47pbJCT0HWVKjy51wZkVxWw1In90CaScmRWFyJ9VV6I BK6M8ABLc4eAV0qvPXb8phX8Ex3JblsHRvvV3CyEpEsznrrhpDStReAIpSXLr0biDAH2J7ycoEN OXyRbRHFY+b2CCGpVv6sX0CuRjIU/isb28HW5JMioBjP9/V3bHaXBchCyxUW+I2CJ6vzndK+1kk dgH2eqDwUeT4lHRvYS6rC6YZkaFk1PZCWrwIevuBTEoYx9nrdVC0fjPzPcLaVVbwg== X-Google-Smtp-Source: AGHT+IHvX5X6BqHRSMeBGrCGLrIORFdCEP7U5u82MX7KqOksIbsBDW9rkN+UXFaQ/V6EmbhAHdKVrg== X-Received: by 2002:a17:906:309a:b0:aac:d8:13d1 with SMTP id a640c23a62f3a-aac00d813f8mr82990466b.13.1734528823548; Wed, 18 Dec 2024 05:33:43 -0800 (PST) Received: from localhost.localdomain ([79.175.114.8]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aab96005f89sm562706166b.35.2024.12.18.05.33.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2024 05:33:42 -0800 (PST) From: Aleksandar Rikalo To: linux-riscv@lists.infradead.org Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Andrew Jones , =?UTF-8?q?Christoph=20M=C3=BCllner?= , Aleksandar Rikalo , linux-kernel@vger.kernel.org, Djordje Todorovic Subject: [PATCH] riscv: Fix the PAUSE Opcode for MIPS P8700. Date: Wed, 18 Dec 2024 14:33:40 +0100 Message-Id: <20241218133340.51003-1-arikalo@gmail.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Raj Vishwanathan4 The riscv MIPS P8700 uses a different opcode for PAUSE. It is a ‘hint’ encoding of the SLLI instruction, with rd=0, rs1=0 and imm=5. It will behave as a NOP instruction if no additional behavior beyond that of SLLI is implemented. Signed-off-by: Raj Vishwanathan4 Signed-off-by: Aleksandar Rikalo --- arch/riscv/Kconfig | 12 ++++++++++++ arch/riscv/include/asm/insn-def.h | 5 +++++ 2 files changed, 17 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index d4a7ca0388c0..07a77fa0a014 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -716,6 +716,18 @@ config RISCV_ISA_ZACAS If you don't know what to do here, say Y. +config RISCV_MIPS_P8700_PAUSE_OPCODE_FIX + bool "Fix the PAUSE Opcode for MIPS P8700" + default n + help + The RISCV MIPS P8700 uses a different opcode for PAUSE. + It is a 'hint' encoding of the SLLI instruction, + with rd=0, rs1=0 and imm=5. It will behave as a NOP + instruction if no additional behavior beyond that of + SLLI is implemented. + + If you are not using the P8700 processor, say n. + config TOOLCHAIN_HAS_ZBB bool default y diff --git a/arch/riscv/include/asm/insn-def.h b/arch/riscv/include/asm/insn-def.h index 9a913010cdd9..793eedde3516 100644 --- a/arch/riscv/include/asm/insn-def.h +++ b/arch/riscv/include/asm/insn-def.h @@ -196,7 +196,12 @@ INSN_I(OPCODE_MISC_MEM, FUNC3(2), __RD(0), \ RS1(base), SIMM12(4)) +#ifndef CONFIG_RISCV_MIPS_P8700_PAUSE_OPCODE_FIX #define RISCV_PAUSE ".4byte 0x100000f" +#else +#define RISCV_PAUSE ".4byte 0x00501013" +#endif + #define ZAWRS_WRS_NTO ".4byte 0x00d00073" #define ZAWRS_WRS_STO ".4byte 0x01d00073" -- 2.25.1