From patchwork Sat Dec 4 12:07:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaojuan Yang X-Patchwork-Id: 12656521 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 0B098C4332F for ; Sat, 4 Dec 2021 12:23:50 +0000 (UTC) Received: from localhost ([::1]:39124 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtU4z-0006Ej-3s for qemu-devel@archiver.kernel.org; Sat, 04 Dec 2021 07:23:49 -0500 Received: from eggs.gnu.org ([209.51.188.92]:39108) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtTpe-0007fs-KG for qemu-devel@nongnu.org; Sat, 04 Dec 2021 07:07:58 -0500 Received: from mail.loongson.cn ([114.242.206.163]:58422 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtTpb-0003JM-Pf for qemu-devel@nongnu.org; Sat, 04 Dec 2021 07:07:58 -0500 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Axysj9Wath8+ECAA--.6122S23; Sat, 04 Dec 2021 20:07:40 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Subject: [RFC PATCH v3 21/27] hw/loongarch: Add irq hierarchy for the system Date: Sat, 4 Dec 2021 20:07:19 +0800 Message-Id: <1638619645-11283-22-git-send-email-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1638619645-11283-1-git-send-email-yangxiaojuan@loongson.cn> References: <1638619645-11283-1-git-send-email-yangxiaojuan@loongson.cn> X-CM-TRANSID: AQAAf9Axysj9Wath8+ECAA--.6122S23 X-Coremail-Antispam: 1UD129KBjvJXoWxGryUGr4rCFyDJw18Aw1fWFg_yoWrKr43pF y5Cas5Gr48XF4xG393K3WxWrn5JFs3CF129FWS9rWSkr4DJryUZw1vywsrtFyUJFWkXw4Y qr95ua1Iga1UA3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 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 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: , Cc: peter.maydell@linaro.org, thuth@redhat.com, chenhuacai@loongson.cn, philmd@redhat.com, i.qemu@xen0n.name, mark.cave-ayland@ilande.co.uk, laurent@vivier.eu, peterx@redhat.com, f4bug@amsat.org, yangxiaojuan@loongson.cn, alistair.francis@wdc.com, maobibo@loongson.cn, pbonzini@redhat.com, richard.henderson@linaro.org, alex.bennee@linaro.org, gaosong@loongson.cn Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch add the irq hierarchy for the virt board. Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao --- hw/loongarch/loongson3.c | 84 ++++++++++++++++++++++++++++++++++++++ include/hw/pci-host/ls7a.h | 13 ++++++ 2 files changed, 97 insertions(+) diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 28b623e927..c42f830208 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -15,6 +15,10 @@ #include "sysemu/runstate.h" #include "sysemu/reset.h" #include "hw/loongarch/loongarch.h" +#include "hw/intc/loongarch_ipi.h" +#include "hw/intc/loongarch_extioi.h" +#include "hw/intc/loongarch_pch_pic.h" +#include "hw/intc/loongarch_pch_msi.h" #include "hw/pci-host/ls7a.h" @@ -70,6 +74,83 @@ static const MemoryRegionOps loongarch_qemu_ops = { }, }; +static void sysbus_mmio_map_loongarch(SysBusDevice *dev, int n, + hwaddr addr, MemoryRegion *iocsr) +{ + assert(n >= 0 && n < dev->num_mmio); + + if (dev->mmio[n].addr == addr) { + /* ??? region already mapped here. */ + return; + } + if (dev->mmio[n].addr != (hwaddr)-1) { + /* Unregister previous mapping. */ + memory_region_del_subregion(iocsr, dev->mmio[n].memory); + } + dev->mmio[n].addr = addr; + memory_region_add_subregion(iocsr, addr, dev->mmio[n].memory); +} + +static void loongson3_irq_init(MachineState *machine) +{ + LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); + DeviceState *ipi, *extioi, *pch_pic, *pch_msi, *cpudev; + SysBusDevice *d; + int cpu, pin, i; + unsigned long ipi_addr; + + ipi = qdev_new(TYPE_LOONGARCH_IPI); + d = SYS_BUS_DEVICE(ipi); + sysbus_realize_and_unref(d, &error_fatal); + for (cpu = 0; cpu < machine->smp.cpus; cpu++) { + cpudev = DEVICE(qemu_get_cpu(cpu)); + ipi_addr = SMP_IPI_MAILBOX + cpu * 0x100; + sysbus_mmio_map_loongarch(d, cpu, ipi_addr, &lams->system_iocsr); + qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); + } + + extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); + d = SYS_BUS_DEVICE(extioi); + sysbus_realize_and_unref(d, &error_fatal); + sysbus_mmio_map_loongarch(d, 0, APIC_BASE, &lams->system_iocsr); + + for (i = 0; i < EXTIOI_IRQS; i++) { + sysbus_connect_irq(d, i, qdev_get_gpio_in(extioi, i)); + } + + /* + * connect ext irq to the cpu irq + * cpu_pin[9:2] <= intc_pin[7:0] + */ + for (cpu = 0; cpu < machine->smp.cpus; cpu++) { + cpudev = DEVICE(qemu_get_cpu(cpu)); + for (pin = 0; pin < LS3A_INTC_IP; pin++) { + qdev_connect_gpio_out(extioi, (cpu * 8 + pin), + qdev_get_gpio_in(cpudev, pin + 2)); + } + } + + pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); + d = SYS_BUS_DEVICE(pch_pic); + sysbus_realize_and_unref(d, &error_fatal); + sysbus_mmio_map(d, 0, LS7A_IOAPIC_REG_BASE); + + /* Connect 64 pch_pic irqs to extioi */ + for (int i = 0; i < PCH_PIC_IRQ_NUM; i++) { + sysbus_connect_irq(d, i, qdev_get_gpio_in(extioi, i)); + } + + pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); + d = SYS_BUS_DEVICE(pch_msi); + sysbus_realize_and_unref(d, &error_fatal); + sysbus_mmio_map(d, 0, LS7A_PCH_MSI_ADDR_LOW); + for (i = 0; i < PCH_MSI_IRQ_NUM; i++) { + /* Connect 192 pch_msi irqs to extioi */ + sysbus_connect_irq(d, i, + qdev_get_gpio_in(extioi, i + PCH_MSI_IRQ_START)); + } +} + static void loongson3_init(MachineState *machine) { const char *cpu_model = machine->cpu_type; @@ -126,6 +207,9 @@ static void loongson3_init(MachineState *machine) memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); offset += highram_size; + /* Initialize the IO interrupt subsystem */ + loongson3_irq_init(machine); + LOONGARCH_SIMPLE_MMIO_OPS(FEATURE_REG, "loongarch_feature", 0x8); LOONGARCH_SIMPLE_MMIO_OPS(VENDOR_REG, "loongarch_vendor", 0x8); LOONGARCH_SIMPLE_MMIO_OPS(CPUNAME_REG, "loongarch_cpuname", 0x8); diff --git a/include/hw/pci-host/ls7a.h b/include/hw/pci-host/ls7a.h index 32d6f045dc..ac938d6d5f 100644 --- a/include/hw/pci-host/ls7a.h +++ b/include/hw/pci-host/ls7a.h @@ -24,6 +24,19 @@ #define LS7A_PCI_IO_BASE 0x18000000UL #define LS7A_PCI_IO_SIZE 0x00010000 +#define LS7A_PCH_REG_BASE 0x10000000UL +#define LS7A_IOAPIC_REG_BASE (LS7A_PCH_REG_BASE) +#define LS7A_PCH_MSI_ADDR_LOW 0x2FF00000UL + +/* + * According to the kernel pch irq start from 64 offset + * 0 ~ 16 irqs used for non-pci device while 16 ~ 64 irqs + * used for pci device. + */ +#define PCH_PIC_IRQ_OFFSET 64 +#define LS7A_DEVICE_IRQS 16 +#define LS7A_PCI_IRQS 48 + struct LS7APCIState { /*< private >*/ PCIDevice parent_obj;