From patchwork Tue May 14 09:07:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13663888 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 6E87CC41513 for ; Tue, 14 May 2024 09:08:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s6o8t-0007m5-PF; Tue, 14 May 2024 05:08:15 -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 1s6o8n-0007l8-G0 for qemu-devel@nongnu.org; Tue, 14 May 2024 05:08:09 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s6o8j-0001M9-MS for qemu-devel@nongnu.org; Tue, 14 May 2024 05:08:09 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8CxiOnuKUNm154MAA--.18244S3; Tue, 14 May 2024 17:07:58 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Bx0VXsKUNmNUAeAA--.37396S4; Tue, 14 May 2024 17:07:57 +0800 (CST) From: Song Gao To: maobibo@loongson.cn Cc: qemu-devel@nongnu.org Subject: [PATCH v2 2/2] hw/loongarch/virt: Enable extioi virt extension Date: Tue, 14 May 2024 17:07:56 +0800 Message-Id: <20240514090756.988096-3-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20240514090756.988096-1-gaosong@loongson.cn> References: <20240514090756.988096-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Bx0VXsKUNmNUAeAA--.37396S4 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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 This patch adds a new board attribute 'v-eiointc'. A value of true enables the virt extended I/O interrupt controller. VMs working in kvm mode have 'v-eiointc' enabled by default. Signed-off-by: Song Gao --- include/hw/loongarch/virt.h | 2 + target/loongarch/cpu.h | 1 + hw/loongarch/virt.c | 117 +++++++++++++++++++++++++++++++----- 3 files changed, 106 insertions(+), 14 deletions(-) diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 2c4f5cf9c8..433e7dd7f7 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -50,11 +50,13 @@ struct LoongArchVirtMachineState { Notifier machine_done; Notifier powerdown_notifier; OnOffAuto acpi; + OnOffAuto veiointc; char *oem_id; char *oem_table_id; DeviceState *acpi_ged; int fdt_size; DeviceState *platform_bus_dev; + DeviceState *extioi; PCIBus *pci_bus; PFlashCFI01 *flash[2]; MemoryRegion system_iocsr; diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 41b8e6d96d..6c41fafb70 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -36,6 +36,7 @@ #define CPUNAME_REG 0x20 #define MISC_FUNC_REG 0x420 #define IOCSRM_EXTIOI_EN 48 +#define IOCSRM_EXTIOI_INT_ENCODE 49 #define IOCSR_MEM_SIZE 0x428 diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 95f9ed5cae..f7468d61ae 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -11,6 +11,7 @@ #include "hw/boards.h" #include "hw/char/serial.h" #include "sysemu/kvm.h" +#include "sysemu/tcg.h" #include "sysemu/sysemu.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" @@ -47,6 +48,31 @@ #include "hw/block/flash.h" #include "qemu/error-report.h" +static bool virt_is_veiointc_enabled(LoongArchVirtMachineState *lvms) +{ + if (lvms->veiointc == ON_OFF_AUTO_OFF) { + return false; + } + return true; +} + +static void virt_get_veiointc(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + OnOffAuto veiointc = lvms->veiointc; + + visit_type_OnOffAuto(v, name, &veiointc, errp); +} + +static void virt_set_veiointc(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + + visit_type_OnOffAuto(v, name, &lvms->veiointc, errp); +} + static PFlashCFI01 *virt_flash_create1(LoongArchVirtMachineState *lvms, const char *name, const char *alias_prop_name) @@ -724,9 +750,17 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) /* Create EXTIOI device */ extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); + if (virt_is_veiointc_enabled(lvms)) { + qdev_prop_set_bit(extioi, "has-virtualization-extension", true); + } sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE, - sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); + if (virt_is_veiointc_enabled(lvms)) { + memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); + } + lvms->extioi = extioi; /* * connect ext irq to the cpu irq @@ -833,38 +867,85 @@ static void virt_firmware_init(LoongArchVirtMachineState *lvms) } } - -static void virt_iocsr_misc_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) +static MemTxResult virt_iocsr_misc_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size, + MemTxAttrs attrs) { + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque); + uint64_t features; + + switch (addr) { + case MISC_FUNC_REG: + if (!virt_is_veiointc_enabled(lvms)) { + return MEMTX_OK; + } + + features = address_space_ldl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + attrs, NULL); + if (val & BIT_ULL(IOCSRM_EXTIOI_EN)) { + features |= BIT(EXTIOI_ENABLE); + } + if (val & BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE)) { + features |= BIT(EXTIOI_ENABLE_INT_ENCODE); + } + + address_space_stl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + features, attrs, NULL); + } + + return MEMTX_OK; } -static uint64_t virt_iocsr_misc_read(void *opaque, hwaddr addr, unsigned size) +static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr, + uint64_t *data, + unsigned size, MemTxAttrs attrs) { - uint64_t ret; + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque); + uint64_t ret = 0; + int features; switch (addr) { case VERSION_REG: - return 0x11ULL; + ret = 0x11ULL; + break; case FEATURE_REG: ret = BIT(IOCSRF_MSI) | BIT(IOCSRF_EXTIOI) | BIT(IOCSRF_CSRIPI); if (kvm_enabled()) { ret |= BIT(IOCSRF_VM); } - return ret; + break; case VENDOR_REG: - return 0x6e6f73676e6f6f4cULL; /* "Loongson" */ + ret = 0x6e6f73676e6f6f4cULL; /* "Loongson" */ + break; case CPUNAME_REG: - return 0x303030354133ULL; /* "3A5000" */ + ret = 0x303030354133ULL; /* "3A5000" */ + break; case MISC_FUNC_REG: - return BIT_ULL(IOCSRM_EXTIOI_EN); + if (!virt_is_veiointc_enabled(lvms)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_EN); + break; + } + + features = address_space_ldl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + attrs, NULL); + if (features & BIT(EXTIOI_ENABLE)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_EN); + } + if (features & BIT(EXTIOI_ENABLE_INT_ENCODE)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE); + } } - return 0ULL; + + *data = ret; + return MEMTX_OK; } static const MemoryRegionOps virt_iocsr_misc_ops = { - .read = virt_iocsr_misc_read, - .write = virt_iocsr_misc_write, + .read_with_attrs = virt_iocsr_misc_read, + .write_with_attrs = virt_iocsr_misc_write, .endianness = DEVICE_LITTLE_ENDIAN, .valid = { .min_access_size = 4, @@ -1045,6 +1126,9 @@ static void virt_initfn(Object *obj) { LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + if (tcg_enabled()) { + lvms->veiointc = ON_OFF_AUTO_OFF; + } lvms->acpi = ON_OFF_AUTO_AUTO; lvms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); lvms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); @@ -1231,6 +1315,11 @@ static void virt_class_init(ObjectClass *oc, void *data) NULL, NULL); object_class_property_set_description(oc, "acpi", "Enable ACPI"); + object_class_property_add(oc, "v-eiointc", "OnOffAuto", + virt_get_veiointc, virt_set_veiointc, + NULL, NULL); + object_class_property_set_description(oc, "v-eiointc", + "Enable Virt Extend I/O Interrupt Controller."); machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); #ifdef CONFIG_TPM machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);