From patchwork Thu Aug 11 03:09:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaojuan Yang X-Patchwork-Id: 12941106 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 8CB5BC25B08 for ; Thu, 11 Aug 2022 03:14:02 +0000 (UTC) Received: from localhost ([::1]:41170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oLye1-00020p-Na for qemu-devel@archiver.kernel.org; Wed, 10 Aug 2022 23:14:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37642) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLyaD-0003BV-PY for qemu-devel@nongnu.org; Wed, 10 Aug 2022 23:10:05 -0400 Received: from mail.loongson.cn ([114.242.206.163]:60644 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oLyaB-0006Bg-Ck for qemu-devel@nongnu.org; Wed, 10 Aug 2022 23:10:05 -0400 Received: from localhost.localdomain (unknown [10.2.5.185]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxzyP9cvRi8RcNAA--.8789S6; Thu, 11 Aug 2022 11:09:51 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, gaosong@loongson.cn, maobibo@loongson.cn, mark.cave-ayland@ilande.co.uk, mst@redhat.com, imammedo@redhat.com, ani@anisinha.ca, f4bug@amsat.org, peter.maydell@linaro.org Subject: [PATCH v1 4/6] hw/loongarch: Add platform bus support Date: Thu, 11 Aug 2022 11:09:46 +0800 Message-Id: <20220811030948.2994206-5-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220811030948.2994206-1-yangxiaojuan@loongson.cn> References: <20220811030948.2994206-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf9DxzyP9cvRi8RcNAA--.8789S6 X-Coremail-Antispam: 1UD129KBjvJXoWxZrWkZryfXryUCw1fXFykGrg_yoWrAr1fpF WUuF93GF48WF47Gr93Z34fury5Awn7G3y2gF1xArn2kFnrGryUZrykC3yqyFyUJ3ykJa4F qFyvq34xWF4UZrJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=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_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" Add platform bus support and add the bus information such as address, size, irq number to FDT table. Signed-off-by: Xiaojuan Yang --- hw/loongarch/Kconfig | 1 + hw/loongarch/virt.c | 33 +++++++++++++++++++++++++++++++++ include/hw/loongarch/virt.h | 1 + include/hw/pci-host/ls7a.h | 5 +++++ 4 files changed, 40 insertions(+) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 1deea83626..fef55c5638 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -8,6 +8,7 @@ config LOONGARCH_VIRT select SERIAL select SERIAL_ISA select VIRTIO_PCI + select PLATFORM_BUS select LOONGARCH_IPI select LOONGARCH_PCH_PIC select LOONGARCH_PCH_MSI diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 561b05d404..3976e8a058 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -37,6 +37,8 @@ #include "hw/mem/nvdimm.h" #include "sysemu/device_tree.h" #include +#include "hw/core/sysbus-fdt.h" +#include "hw/platform-bus.h" static void create_fdt(LoongArchMachineState *lams) { @@ -346,6 +348,31 @@ static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState return dev; } +static DeviceState *create_platform_bus(DeviceState *pch_pic) +{ + DeviceState *dev; + SysBusDevice *sysbus; + int i, irq; + MemoryRegion *sysmem = get_system_memory(); + + dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE); + dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE); + qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS); + qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + + sysbus = SYS_BUS_DEVICE(dev); + for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) { + irq = VIRT_PLATFORM_BUS_IRQ - PCH_PIC_IRQ_OFFSET + i; + sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq)); + } + + memory_region_add_subregion(sysmem, + VIRT_PLATFORM_BUS_BASEADDRESS, + sysbus_mmio_get_region(sysbus, 0)); + return dev; +} + static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams) { DeviceState *gpex_dev; @@ -421,6 +448,8 @@ static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState * memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); /* acpi ged */ lams->acpi_ged = create_acpi_ged(pch_pic, lams); + /* platform bus */ + lams->platform_bus_dev = create_platform_bus(pch_pic); } static void loongarch_irq_init(LoongArchMachineState *lams) @@ -726,6 +755,10 @@ static void loongarch_init(MachineState *machine) /* Initialize the IO interrupt subsystem */ loongarch_irq_init(lams); fdt_add_irqchip_node(lams); + platform_bus_add_all_fdt_nodes(machine->fdt, "/intc", + VIRT_PLATFORM_BUS_BASEADDRESS, + VIRT_PLATFORM_BUS_SIZE, + VIRT_PLATFORM_BUS_IRQ); lams->machine_done.notify = virt_machine_done; qemu_add_machine_init_done_notifier(&lams->machine_done); fdt_add_pcie_node(lams); diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 92b84de1c5..64c90b80d2 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -49,6 +49,7 @@ struct LoongArchMachineState { char *oem_table_id; DeviceState *acpi_ged; int fdt_size; + DeviceState *platform_bus_dev; }; #define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt") diff --git a/include/hw/pci-host/ls7a.h b/include/hw/pci-host/ls7a.h index cdde0af1f8..9bd875ca8b 100644 --- a/include/hw/pci-host/ls7a.h +++ b/include/hw/pci-host/ls7a.h @@ -42,4 +42,9 @@ #define VIRT_RTC_REG_BASE (VIRT_MISC_REG_BASE + 0x00050100) #define VIRT_RTC_LEN 0x100 #define VIRT_SCI_IRQ (PCH_PIC_IRQ_OFFSET + 4) + +#define VIRT_PLATFORM_BUS_BASEADDRESS 0x16000000 +#define VIRT_PLATFORM_BUS_SIZE 0x2000000 +#define VIRT_PLATFORM_BUS_NUM_IRQS 2 +#define VIRT_PLATFORM_BUS_IRQ 69 #endif