[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v2 35/43] hw/loongarch: Add irq hierarchy for the system
From: |
Xiaojuan Yang |
Subject: |
[PATCH v2 35/43] hw/loongarch: Add irq hierarchy for the system |
Date: |
Mon, 25 Apr 2022 17:10:19 +0800 |
This patch add the irq hierarchy for the virt board.
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
hw/loongarch/loongson3.c | 116 +++++++++++++++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c
index a80ce8d383..4906f9926b 100644
--- a/hw/loongarch/loongson3.c
+++ b/hw/loongarch/loongson3.c
@@ -16,8 +16,122 @@
#include "sysemu/rtc.h"
#include "hw/loongarch/virt.h"
#include "exec/address-spaces.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"
+
#include "target/loongarch/cpu.h"
+static void loongarch_irq_init(LoongArchMachineState *lams)
+{
+ MachineState *ms = MACHINE(lams);
+ DeviceState *pch_pic, *pch_msi, *cpudev;
+ DeviceState *ipi, *extioi;
+ SysBusDevice *d;
+ LoongArchCPU *lacpu;
+ CPULoongArchState *env;
+ CPUState *cpu_state;
+
+ int cpu, pin, i;
+ unsigned long ipi_addr;
+
+ ipi = qdev_new(TYPE_LOONGARCH_IPI);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
+
+ extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
+
+ /*
+ * The connection of interrupts:
+ * +-----+ +---------+ +-------+
+ * | IPI |--> | CPUINTC | <-- | Timer |
+ * +-----+ +---------+ +-------+
+ * ^
+ * |
+ * +---------+
+ * | EIOINTC |
+ * +---------+
+ * ^ ^
+ * | |
+ * +---------+ +---------+
+ * | PCH-PIC | | PCH-MSI |
+ * +---------+ +---------+
+ * ^ ^ ^
+ * | | |
+ * +--------+ +---------+ +---------+
+ * | UARTs | | Devices | | Devices |
+ * +--------+ +---------+ +---------+
+ */
+ for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+ cpu_state = qemu_get_cpu(cpu);
+ cpudev = DEVICE(cpu_state);
+ lacpu = LOONGARCH_CPU(cpu_state);
+ env = &(lacpu->env);
+
+ /* connect ipi irq to cpu irq */
+ qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI));
+ /* IPI iocsr memory region */
+ memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
+ cpu * 2));
+ /* IPI system memory region */
+ ipi_addr = IPI_SYSTEM_MEM + cpu * 0x100;
+ memory_region_add_subregion(get_system_memory(), ipi_addr,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
+ cpu * 2 + 1));
+ /* extioi iocsr memory region */
+ memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
+ cpu));
+ }
+
+ /* extioi memory region */
+ memory_region_add_subregion(get_system_memory(), EXTIOI_SYSTEM_MEM,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
+ cpu));
+
+ /*
+ * connect ext irq to the cpu irq
+ * cpu_pin[9:2] <= intc_pin[7:0]
+ */
+ for (cpu = 0; cpu < ms->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);
+ memory_region_add_subregion(get_system_memory(), LS7A_IOAPIC_REG_BASE,
+ sysbus_mmio_get_region(d, 0));
+ memory_region_add_subregion(get_system_memory(),
+ LS7A_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET,
+ sysbus_mmio_get_region(d, 1));
+ memory_region_add_subregion(get_system_memory(),
+ LS7A_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO,
+ sysbus_mmio_get_region(d, 2));
+
+ /* 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 loongarch_init(MachineState *machine)
{
const char *cpu_model = machine->cpu_type;
@@ -58,6 +172,8 @@ static void loongarch_init(MachineState *machine)
get_system_io(), 0, LOONGARCH_ISA_IO_SIZE);
memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE,
&lams->isa_io);
+ /* Initialize the IO interrupt subsystem */
+ loongarch_irq_init(lams);
}
static void loongarch_class_init(ObjectClass *oc, void *data)
--
2.31.1
- Re: [PATCH v2 23/43] target/loongarch: Add LoongArch interrupt and exception handle, (continued)
[PATCH v2 17/43] target/loongarch: Add target build suport, Xiaojuan Yang, 2022/04/25
[PATCH v2 13/43] target/loongarch: Add floating point move instruction translation, Xiaojuan Yang, 2022/04/25
[PATCH v2 35/43] hw/loongarch: Add irq hierarchy for the system,
Xiaojuan Yang <=
[PATCH v2 32/43] hw/intc: Add LoongArch ls7a interrupt controller support(PCH-PIC), Xiaojuan Yang, 2022/04/25
[PATCH v2 39/43] hw/loongarch: Add LoongArch load elf function., Xiaojuan Yang, 2022/04/25
[PATCH v2 31/43] hw/loongarch: Add LoongArch ipi interrupt support(IPI), Xiaojuan Yang, 2022/04/25
[PATCH v2 41/43] target/loongarch: Add gdb support., Xiaojuan Yang, 2022/04/25
[PATCH v2 20/43] target/loongarch: Add basic vmstate description of CPU., Xiaojuan Yang, 2022/04/25