From patchwork Tue Oct 20 13:14:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: fangying X-Patchwork-Id: 11846949 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8AB1D15E6 for ; Tue, 20 Oct 2020 13:22:46 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 3F6A8205CB for ; Tue, 20 Oct 2020 13:22:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F6A8205CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:40446 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kUrbB-0001Sv-5W for patchwork-qemu-devel@patchwork.kernel.org; Tue, 20 Oct 2020 09:22:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50562) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUrU8-0000LP-8C; Tue, 20 Oct 2020 09:15:28 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:5267 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUrU0-000771-NW; Tue, 20 Oct 2020 09:15:27 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id A19F2158F64A3A4CD05C; Tue, 20 Oct 2020 21:15:10 +0800 (CST) Received: from localhost (10.174.186.67) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Tue, 20 Oct 2020 21:15:02 +0800 From: Ying Fang To: Subject: [RFC PATCH v2 06/13] hw/arm/virt: DT: add cpu-map Date: Tue, 20 Oct 2020 21:14:33 +0800 Message-ID: <20201020131440.1090-7-fangying1@huawei.com> X-Mailer: git-send-email 2.28.0.windows.1 In-Reply-To: <20201020131440.1090-1-fangying1@huawei.com> References: <20201020131440.1090-1-fangying1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.186.67] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.191; envelope-from=fangying1@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/20 09:15:07 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, zhang.zhanghailiang@huawei.com, alex.chen@huawei.com, shannon.zhaosl@gmail.com, qemu-arm@nongnu.org, alistair.francis@wdc.com, Ying Fang , imammedo@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Andrew Jones Support devicetree CPU topology descriptions. Signed-off-by: Andrew Jones Signed-off-by: Ying Fang --- hw/arm/virt.c | 40 +++++++++++++++++++++++++++++++++++++++- include/hw/arm/virt.h | 1 + 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index ff8a14439e..d23b941020 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -351,9 +351,10 @@ static void fdt_add_cpu_nodes(const VirtMachineState *vms) int cpu; int addr_cells = 1; const MachineState *ms = MACHINE(vms); + VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); /* - * From Documentation/devicetree/bindings/arm/cpus.txt + * See Linux Documentation/devicetree/bindings/arm/cpus.yaml * On ARM v8 64-bit systems value should be set to 2, * that corresponds to the MPIDR_EL1 register size. * If MPIDR_EL1[63:32] value is equal to 0 on all CPUs @@ -407,8 +408,42 @@ static void fdt_add_cpu_nodes(const VirtMachineState *vms) ms->possible_cpus->cpus[cs->cpu_index].props.node_id); } + if (ms->smp.cpus > 1 && !vmc->ignore_cpu_topology) { + qemu_fdt_setprop_cell(vms->fdt, nodename, "phandle", + qemu_fdt_alloc_phandle(vms->fdt)); + } + g_free(nodename); } + + if (ms->smp.cpus > 1 && !vmc->ignore_cpu_topology) { + /* + * See Linux Documentation/devicetree/bindings/cpu/cpu-topology.txt + */ + qemu_fdt_add_subnode(vms->fdt, "/cpus/cpu-map"); + + for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) { + char *cpu_path = g_strdup_printf("/cpus/cpu@%d", cpu); + char *map_path; + + if (ms->smp.threads > 1) { + map_path = g_strdup_printf( + "/cpus/cpu-map/%s%d/%s%d/%s%d", + "cluster", cpu / (ms->smp.cores * ms->smp.threads), + "core", (cpu / ms->smp.threads) % ms->smp.cores, + "thread", cpu % ms->smp.threads); + } else { + map_path = g_strdup_printf( + "/cpus/cpu-map/%s%d/%s%d", + "cluster", cpu / ms->smp.cores, + "core", cpu % ms->smp.cores); + } + qemu_fdt_add_path(vms->fdt, map_path); + qemu_fdt_setprop_phandle(vms->fdt, map_path, "cpu", cpu_path); + g_free(map_path); + g_free(cpu_path); + } + } } static void fdt_add_its_gic_node(VirtMachineState *vms) @@ -2672,8 +2707,11 @@ DEFINE_VIRT_MACHINE_AS_LATEST(5, 3) static void virt_machine_5_2_options(MachineClass *mc) { + VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); + virt_machine_5_3_options(mc); compat_props_add(mc->compat_props, hw_compat_5_2, hw_compat_5_2_len); + vmc->ignore_cpu_topology = true; } DEFINE_VIRT_MACHINE(5, 2) diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 010f24f580..917bd8b645 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -118,6 +118,7 @@ typedef enum VirtGICType { struct VirtMachineClass { MachineClass parent; bool disallow_affinity_adjustment; + bool ignore_cpu_topology; bool no_its; bool no_pmu; bool claim_edge_triggered_timers;