From patchwork Tue Jul 16 16:26:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 13734695 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 2B803C3DA49 for ; Tue, 16 Jul 2024 16:30:17 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTl2P-0002bL-IC; Tue, 16 Jul 2024 12:28:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTl1i-0007WI-5Q; Tue, 16 Jul 2024 12:27:45 -0400 Received: from mail-pf1-x42f.google.com ([2607:f8b0:4864:20::42f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sTl1d-0006eH-6H; Tue, 16 Jul 2024 12:27:40 -0400 Received: by mail-pf1-x42f.google.com with SMTP id d2e1a72fcca58-70b3c0a00f2so3564031b3a.3; Tue, 16 Jul 2024 09:27:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1721147249; x=1721752049; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=EUzOrDcz1AGLPLWjWXyXaCj3TBotsysZNYHGdl2IwIE=; b=HmaadkDt3OJnZ6PeBjPEXm+pIQqn0EQNPUJ9zXZTWXhHkxgAO5LTimL5BR0oPdJbCE bTY8ih6+fTnJds//XqgTEZ+KkqMBs/RXKbyHCyluViQ0VMdVeCDnRuQo21e8TeCjouG1 y2wmB1/z5pOVLCBrHOtH5BXmZ1vz/PC6Woht+gkKl8hiSrTccu0jFA0WvMpRM7SY8C3Y 6SKTdHqXN+cSm+rBcqObHXCSXvqppOXVQJgqlR1IXax7PQcw9XXr46lhj6STDy5yikzw a4EBDyXQfh07YhdnaRNLp7Ag9MOcWfL0b3TZeRaAcEJSrVpts1FaYpaYsw7xmh0W4oeP WYtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721147249; x=1721752049; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=EUzOrDcz1AGLPLWjWXyXaCj3TBotsysZNYHGdl2IwIE=; b=limZgmeqLjaNzdb7rXm+YwgGJ3kWMHM3J+70kijkATj+tZblJSQocxVQS+TpK9j6WJ 5LFNjJBqe67Z/xRDFsSiKsD7KLidMpt2pzc7HaQ9Mb5qYOoQYdDh4QySa7rfKNLXvTHX b8D+EWBQozsiF7t2WgaNRGCLsLh7agN63zff8ENQeBmz21jYGMBzhOMlew32cBQEfPjH o3V0MCD5JpRTTFcEG5aioaYAXh6WvAzKV9xeTLdsdY1pFjJFAYeVMce/4WWkV8fOHJJG uWdeFYhaaFAqVWn3wECj8YB3F5g/K52pzZhMM8JC/OOjXK99lrspJ7ft0CkgLFzFR+1T xuEQ== X-Forwarded-Encrypted: i=1; AJvYcCW/SwT3JuDp7qmLbHYnQho1ckQ5iAqOGgIHDB5LydSWi8uJdIYZ+v1j0Pk+LaMwRfvNTQysiuqoN8BA/I6dgtx8wev8XfU= X-Gm-Message-State: AOJu0YycQQC830MSQcVQEdVrSHZdqLqo5qhwoiklEm9AQ72Y9Oj5XrEp vPw2sj8V1XgCN1NmHUcEBMuJ8x0D71Mj0yknnwPfDweMDv/6ZXJ79FhLqw== X-Google-Smtp-Source: AGHT+IGisbjoUBY8Bi/ZzYpmwNxJIj1gJ96cZDU2Ndw8B+sWdrDvbw8sz7oAc7HR3TFGAdSgKYOu6Q== X-Received: by 2002:a05:6a20:7f93:b0:1c2:a6ad:d23e with SMTP id adf61e73a8af0-1c3f1256149mr2853498637.30.1721147248836; Tue, 16 Jul 2024 09:27:28 -0700 (PDT) Received: from wheely.local0.net ([203.220.44.216]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b7eca86d6sm6722161b3a.179.2024.07.16.09.27.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jul 2024 09:27:28 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , =?utf-8?q?C=C3=A9dric_Le_Goater?= , =?utf-8?b?RnLDqWTDqXJp?= =?utf-8?b?YyBCYXJyYXQ=?= , Harsh Prateek Bora , qemu-devel@nongnu.org, =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PATCH v3 17/19] ppc/pnv: Add a CPU nmi and resume function Date: Wed, 17 Jul 2024 02:26:13 +1000 Message-ID: <20240716162617.32161-18-npiggin@gmail.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240716162617.32161-1-npiggin@gmail.com> References: <20240716162617.32161-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=npiggin@gmail.com; helo=mail-pf1-x42f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Power CPUs have an execution control facility that can pause, resume, and cause NMIs, among other things. Add a function that will nmi a CPU and resume it if it was paused, in preparation for implementing the control facility. Reviewed-by: Cédric Le Goater Signed-off-by: Nicholas Piggin --- include/hw/ppc/pnv.h | 2 ++ hw/ppc/pnv.c | 14 +++++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index c56d152889..b7858d310d 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -112,6 +112,8 @@ PnvChip *pnv_chip_add_phb(PnvChip *chip, PnvPHB *phb); #define PNV_FDT_ADDR 0x01000000 #define PNV_TIMEBASE_FREQ 512000000ULL +void pnv_cpu_do_nmi_resume(CPUState *cs); + /* * BMC helpers */ diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 08aaac359b..f7580947ed 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -2751,11 +2751,23 @@ static void pnv_cpu_do_nmi_on_cpu(CPUState *cs, run_on_cpu_data arg) */ env->spr[SPR_SRR1] |= SRR1_WAKESCOM; } + if (arg.host_int == 1) { + cpu_resume(cs); + } +} + +/* + * Send a SRESET (NMI) interrupt to the CPU, and resume execution if it was + * paused. + */ +void pnv_cpu_do_nmi_resume(CPUState *cs) +{ + async_run_on_cpu(cs, pnv_cpu_do_nmi_on_cpu, RUN_ON_CPU_HOST_INT(1)); } static void pnv_cpu_do_nmi(PnvChip *chip, PowerPCCPU *cpu, void *opaque) { - async_run_on_cpu(CPU(cpu), pnv_cpu_do_nmi_on_cpu, RUN_ON_CPU_NULL); + async_run_on_cpu(CPU(cpu), pnv_cpu_do_nmi_on_cpu, RUN_ON_CPU_HOST_INT(0)); } static void pnv_nmi(NMIState *n, int cpu_index, Error **errp)