qemu/arm-virt-gic-Construct-irqs-connection-from-create_g.patch

From 92124743f4560c490780a229f53ea5881f706383 Mon Sep 17 00:00:00 2001
From: Keqian Zhu <zhukeqian1@huawei.com>
Date: Sun, 5 Apr 2020 15:29:16 +0800
Subject: [PATCH] arm/virt/gic: Construct irqs connection from create_gic

Make the irqs can be connected to for individual CPU.

Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 hw/arm/virt.c | 90 ++++++++++++++++++++++++++++-----------------------
 1 file changed, 49 insertions(+), 41 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 83f4887e57..55d403bad6 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -706,6 +706,54 @@ static void create_v2m(VirtMachineState *vms)
     fdt_add_v2m_gic_node(vms);
 }

+static void connect_gic_cpu_irqs(VirtMachineState *vms, int i)
+{
+    DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
+    SysBusDevice *gicbusdev = SYS_BUS_DEVICE(vms->gic);
+    int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS;
+    int num_cpus = object_property_get_uint(OBJECT(vms->gic), "num-cpu", NULL);
+    int gic_type = vms->gic_version;
+    int irq;
+    /* Mapping from the output timer irq lines from the CPU to the
+     * GIC PPI inputs we use for the virt board.
+     */
+    const int timer_irq[] = {
+        [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ,
+        [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ,
+        [GTIMER_HYP]  = ARCH_TIMER_NS_EL2_IRQ,
+        [GTIMER_SEC]  = ARCH_TIMER_S_EL1_IRQ,
+    };
+
+    for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
+        qdev_connect_gpio_out(cpudev, irq,
+                              qdev_get_gpio_in(vms->gic,
+                                               ppibase + timer_irq[irq]));
+    }
+
+    if (gic_type == 3) {
+        qemu_irq irq = qdev_get_gpio_in(vms->gic,
+                                        ppibase + ARCH_GIC_MAINT_IRQ);
+        qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt",
+                                    0, irq);
+    } else if (vms->virt) {
+        qemu_irq irq = qdev_get_gpio_in(vms->gic,
+                                        ppibase + ARCH_GIC_MAINT_IRQ);
+        sysbus_connect_irq(gicbusdev, i + 4 * num_cpus, irq);
+    }
+
+    qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
+                                qdev_get_gpio_in(vms->gic, ppibase
+                                                 + VIRTUAL_PMU_IRQ));
+
+    sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
+    sysbus_connect_irq(gicbusdev, i + num_cpus,
+                       qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
+    sysbus_connect_irq(gicbusdev, i + 2 * num_cpus,
+                       qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
+    sysbus_connect_irq(gicbusdev, i + 3 * num_cpus,
+                       qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
+}
+
 static void create_gic(VirtMachineState *vms)
 {
     MachineState *ms = MACHINE(vms);
@@ -775,47 +823,7 @@ static void create_gic(VirtMachineState *vms)
      * and the GIC's IRQ/FIQ/VIRQ/VFIQ interrupt outputs to the CPU's inputs.
      */
     for (i = 0; i < smp_cpus; i++) {
-        DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
-        int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS;
-        int irq;
-        /* Mapping from the output timer irq lines from the CPU to the
-         * GIC PPI inputs we use for the virt board.
-         */
-        const int timer_irq[] = {
-            [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ,
-            [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ,
-            [GTIMER_HYP]  = ARCH_TIMER_NS_EL2_IRQ,
-            [GTIMER_SEC]  = ARCH_TIMER_S_EL1_IRQ,
-        };
-
-        for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
-            qdev_connect_gpio_out(cpudev, irq,
-                                  qdev_get_gpio_in(vms->gic,
-                                                   ppibase + timer_irq[irq]));
-        }
-
-        if (type == 3) {
-            qemu_irq irq = qdev_get_gpio_in(vms->gic,
-                                            ppibase + ARCH_GIC_MAINT_IRQ);
-            qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt",
-                                        0, irq);
-        } else if (vms->virt) {
-            qemu_irq irq = qdev_get_gpio_in(vms->gic,
-                                            ppibase + ARCH_GIC_MAINT_IRQ);
-            sysbus_connect_irq(gicbusdev, i + 4 * smp_cpus, irq);
-        }
-
-        qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
-                                    qdev_get_gpio_in(vms->gic, ppibase
-                                                     + VIRTUAL_PMU_IRQ));
-
-        sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
-        sysbus_connect_irq(gicbusdev, i + smp_cpus,
-                           qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
-        sysbus_connect_irq(gicbusdev, i + 2 * smp_cpus,
-                           qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
-        sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus,
-                           qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
+        connect_gic_cpu_irqs(vms, i);
     }

     fdt_add_gic_node(vms);
--
2.19.1