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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 492EEC433E0 for ; Tue, 5 Jan 2021 17:11:04 +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 CFAFA22CBB for ; Tue, 5 Jan 2021 17:11:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CFAFA22CBB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49862 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kwprK-0003sN-Sa for qemu-devel@archiver.kernel.org; Tue, 05 Jan 2021 12:11:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41174) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwpbP-0000Hk-MT for qemu-devel@nongnu.org; Tue, 05 Jan 2021 11:54:36 -0500 Received: from mga18.intel.com ([134.134.136.126]:10374) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwpbI-00016I-5k for qemu-devel@nongnu.org; Tue, 05 Jan 2021 11:54:35 -0500 IronPort-SDR: VEf1fdsr5SGx3w6kzD0UX0bnVPFI6qZw8HzCmMekOB3unqVwKfIrSELipziFDIjGukCNnrk1Hi YA532U25f2qA== X-IronPort-AV: E=McAfee;i="6000,8403,9855"; a="164841152" X-IronPort-AV: E=Sophos;i="5.78,477,1599548400"; d="scan'208";a="164841152" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jan 2021 08:54:12 -0800 IronPort-SDR: RwYDGOvaCRpbT/2UtfrO3khqc9H+O/UoHKCiuox9I/+EqDeg1cDKjbzO0mqCxcucWd0wFa7bbv 0LgLfRHINiLg== X-IronPort-AV: E=Sophos;i="5.78,477,1599548400"; d="scan'208";a="346338101" Received: from tgeddam-mobl.amr.corp.intel.com (HELO bwidawsk-mobl5.local) ([10.252.140.57]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jan 2021 08:54:08 -0800 From: Ben Widawsky To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 31/32] WIP: i386/cxl: Initialize a host bridge Date: Tue, 5 Jan 2021 08:53:22 -0800 Message-Id: <20210105165323.783725-32-ben.widawsky@intel.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210105165323.783725-1-ben.widawsky@intel.com> References: <20210105165323.783725-1-ben.widawsky@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=134.134.136.126; envelope-from=ben.widawsky@intel.com; helo=mga18.intel.com 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, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Ben Widawsky , "Michael S. Tsirkin" , Vishal Verma , Chris Browy , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Jonathan Cameron , Prashant V Agarwal , Dan Williams Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch allows initializing the primary host bridge as a CXL capable hostbridge. Signed-off-by: Ben Widawsky -- This patch is WIP. --- hw/arm/virt.c | 1 + hw/core/machine.c | 26 ++++++++++++++++++++++++++ hw/i386/acpi-build.c | 8 +++++++- hw/i386/microvm.c | 1 + hw/i386/pc.c | 1 + hw/ppc/spapr.c | 2 ++ include/hw/boards.h | 2 ++ include/hw/cxl/cxl.h | 4 ++++ 8 files changed, 44 insertions(+), 1 deletion(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 96985917d3..c9d6636efa 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -2481,6 +2481,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) hc->unplug_request = virt_machine_device_unplug_request_cb; hc->unplug = virt_machine_device_unplug_cb; mc->nvdimm_supported = true; + mc->cxl_supported = false; mc->auto_enable_numa_with_memhp = true; mc->auto_enable_numa_with_memdev = true; mc->default_ram_id = "mach-virt.ram"; diff --git a/hw/core/machine.c b/hw/core/machine.c index de3b8f1b31..c739803854 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -30,6 +30,7 @@ #include "sysemu/qtest.h" #include "hw/pci/pci.h" #include "hw/mem/nvdimm.h" +#include "hw/cxl/cxl.h" #include "migration/global_state.h" #include "migration/vmstate.h" @@ -502,6 +503,20 @@ static void machine_set_nvdimm_persistence(Object *obj, const char *value, nvdimms_state->persistence_string = g_strdup(value); } +static bool machine_get_cxl(Object *obj, Error **errp) +{ + MachineState *ms = MACHINE(obj); + + return ms->cxl_devices_state->is_enabled; +} + +static void machine_set_cxl(Object *obj, bool value, Error **errp) +{ + MachineState *ms = MACHINE(obj); + + ms->cxl_devices_state->is_enabled = value; +} + void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type) { QAPI_LIST_PREPEND(mc->allowed_dynamic_sysbus_devices, g_strdup(type)); @@ -903,6 +918,16 @@ static void machine_initfn(Object *obj) "Valid values are cpu, mem-ctrl"); } + if (mc->cxl_supported) { + Object *obj = OBJECT(ms); + + ms->cxl_devices_state = g_new0(CXLState, 1); + object_property_add_bool(obj, "cxl", machine_get_cxl, machine_set_cxl); + object_property_set_description(obj, "cxl", + "Set on/off to enable/disable " + "CXL instantiation"); + } + if (mc->cpu_index_to_instance_props && mc->get_default_cpu_node_id) { ms->numa_state = g_new0(NumaState, 1); object_property_add_bool(obj, "hmat", @@ -939,6 +964,7 @@ static void machine_finalize(Object *obj) g_free(ms->device_memory); g_free(ms->nvdimms_state); g_free(ms->numa_state); + g_free(ms->cxl_devices_state); } bool machine_usb(MachineState *machine) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 470dd7ddf4..90d52e7774 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -53,6 +53,7 @@ #include "sysemu/numa.h" #include "sysemu/reset.h" #include "hw/hyperv/vmbus-bridge.h" +#include "hw/cxl/cxl.h" /* Supported chipsets: */ #include "hw/southbridge/piix.h" @@ -1277,8 +1278,13 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, build_piix4_pci0_int(dsdt); } else { sb_scope = aml_scope("_SB"); + /* + * XXX: CXL spec calls this "CXL0", but that would require lots of + * changes throughout and so even for CXL enabled, we call it "PCI0" + */ dev = aml_device("PCI0"); - init_pci_acpi(dev, 0, PCIE); + init_pci_acpi(dev, 0, + machine->cxl_devices_state->is_enabled ? CXL : PCIE); aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(sb_scope, dev); diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c index edf2b0f061..970b299a69 100644 --- a/hw/i386/microvm.c +++ b/hw/i386/microvm.c @@ -688,6 +688,7 @@ static void microvm_class_init(ObjectClass *oc, void *data) mc->auto_enable_numa_with_memdev = false; mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; mc->nvdimm_supported = false; + mc->cxl_supported = false; mc->default_ram_id = "microvm.ram"; /* Avoid relying too much on kernel components */ diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 5d41809b37..7350eeea9c 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1725,6 +1725,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) hc->unplug = pc_machine_device_unplug_cb; mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; mc->nvdimm_supported = true; + mc->cxl_supported = true; mc->default_ram_id = "pc.ram"; object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size", diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 489cefcb81..b5ea497403 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4442,6 +4442,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data) mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0"); mc->has_hotpluggable_cpus = true; mc->nvdimm_supported = true; + mc->cxl_supported = false; smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; fwc->get_dev_path = spapr_get_fw_dev_path; nc->nmi_monitor_handler = spapr_nmi; @@ -4602,6 +4603,7 @@ static void spapr_machine_4_2_class_options(MachineClass *mc) smc->default_caps.caps[SPAPR_CAP_FWNMI] = SPAPR_CAP_OFF; smc->rma_limit = 16 * GiB; mc->nvdimm_supported = false; + mc->cxl_supported = false; } DEFINE_SPAPR_MACHINE(4_2, "4.2", false); diff --git a/include/hw/boards.h b/include/hw/boards.h index 17b1f3f0b9..808f73e134 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -206,6 +206,7 @@ struct MachineClass { bool ignore_boot_device_suffixes; bool smbus_no_migration_support; bool nvdimm_supported; + bool cxl_supported; bool numa_mem_supported; bool auto_enable_numa; const char *default_ram_id; @@ -292,6 +293,7 @@ struct MachineState { CPUArchIdList *possible_cpus; CpuTopology smp; struct NVDIMMState *nvdimms_state; + struct CXLState *cxl_devices_state; struct NumaState *numa_state; }; diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h index 809ed7de60..6961e47076 100644 --- a/include/hw/cxl/cxl.h +++ b/include/hw/cxl/cxl.h @@ -22,5 +22,9 @@ #define CXL_HOST_BASE 0xD0000000 #define CXL_WINDOW_MAX 10 +typedef struct CXLState { + bool is_enabled; +} CXLState; + #endif -- 2.30.0