Currently LoongArch and MIPS architectures share loongson_ipi,
and modifications to loongson_ipi by the MIPS architecture may
lead to some unknown problems in the LoongArch architecture.
In order to minimize the impact of this inter-architectural
interaction, we believe that it is necessary to restore loongarch_ipi.

Signed-off-by: Song Gao <gaosong@loongson.cn>
---
 MAINTAINERS                     |  2 --
 include/hw/intc/loongarch_ipi.h | 54 +++++++++++++++++++++++++++++++++
 include/hw/loongarch/virt.h     |  2 +-
 hw/loongarch/virt.c             |  4 +--
 hw/intc/Kconfig                 |  3 ++
 hw/intc/meson.build             |  1 +
 hw/intc/trace-events            |  3 ++
 hw/loongarch/Kconfig            |  2 +-
 8 files changed, 65 insertions(+), 6 deletions(-)
 create mode 100644 include/hw/intc/loongarch_ipi.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 19f67dc5d2..9d7575a7f1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1246,9 +1246,7 @@ F: configs/devices/loongarch64-softmmu/default.mak
 F: hw/loongarch/
 F: include/hw/loongarch/virt.h
 F: include/hw/intc/loongarch_*.h
-F: include/hw/intc/loongson_ipi.h
 F: hw/intc/loongarch_*.c
-F: hw/intc/loongson_ipi.c
 F: include/hw/pci-host/ls7a.h
 F: hw/rtc/ls7a_rtc.c
 F: gdb-xml/loongarch*.xml
diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h
new file mode 100644
index 0000000000..1c1e834849
--- /dev/null
+++ b/include/hw/intc/loongarch_ipi.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch ipi interrupt header files
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_LOONGARCH_IPI_H
+#define HW_LOONGARCH_IPI_H
+
+#include "hw/sysbus.h"
+
+/* Mainy used by iocsr read and write */
+#define SMP_IPI_MAILBOX      0x1000ULL
+#define CORE_STATUS_OFF       0x0
+#define CORE_EN_OFF           0x4
+#define CORE_SET_OFF          0x8
+#define CORE_CLEAR_OFF        0xc
+#define CORE_BUF_20           0x20
+#define CORE_BUF_28           0x28
+#define CORE_BUF_30           0x30
+#define CORE_BUF_38           0x38
+#define IOCSR_IPI_SEND        0x40
+#define IOCSR_MAIL_SEND       0x48
+#define IOCSR_ANY_SEND        0x158
+
+#define MAIL_SEND_ADDR        (SMP_IPI_MAILBOX + IOCSR_MAIL_SEND)
+#define MAIL_SEND_OFFSET      0
+#define ANY_SEND_OFFSET       (IOCSR_ANY_SEND - IOCSR_MAIL_SEND)
+
+#define IPI_MBX_NUM           4
+
+#define TYPE_LOONGARCH_IPI "loongarch_ipi"
+OBJECT_DECLARE_SIMPLE_TYPE(LoongArchIPI, LOONGARCH_IPI)
+
+typedef struct IPICore {
+    uint32_t status;
+    uint32_t en;
+    uint32_t set;
+    uint32_t clear;
+    /* 64bit buf divide into 2 32bit buf */
+    uint32_t buf[IPI_MBX_NUM * 2];
+    qemu_irq irq;
+} IPICore;
+
+struct LoongArchIPI {
+    SysBusDevice parent_obj;
+    MemoryRegion ipi_iocsr_mem;
+    MemoryRegion ipi64_iocsr_mem;
+    uint32_t num_cpu;
+    IPICore *cpu;
+};
+
+#endif
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index 8fdfacf268..fe92971de1 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -11,7 +11,7 @@
 #include "target/loongarch/cpu.h"
 #include "hw/boards.h"
 #include "qemu/queue.h"
-#include "hw/intc/loongson_ipi.h"
+#include "hw/intc/loongarch_ipi.h"
 #include "hw/block/flash.h"
 #include "hw/loongarch/boot.h"
 
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 8be2d2ff6a..6bef2f1165 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -23,7 +23,7 @@
 #include "net/net.h"
 #include "hw/loader.h"
 #include "elf.h"
-#include "hw/intc/loongson_ipi.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"
@@ -788,7 +788,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
      */
 
     /* Create IPI device */
-    ipi = qdev_new(TYPE_LOONGSON_IPI);
+    ipi = qdev_new(TYPE_LOONGARCH_IPI);
     qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
 
diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig
index 58b6d3a710..576c04e4e4 100644
--- a/hw/intc/Kconfig
+++ b/hw/intc/Kconfig
@@ -87,6 +87,9 @@ config GOLDFISH_PIC
 config M68K_IRQC
     bool
 
+config LOONGARCH_IPI
+    bool
+
 config LOONGSON_IPI
     bool
 
diff --git a/hw/intc/meson.build b/hw/intc/meson.build
index afd1aa51ee..19b719c336 100644
--- a/hw/intc/meson.build
+++ b/hw/intc/meson.build
@@ -70,6 +70,7 @@ specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_XIVE'],
 		if_true: files('spapr_xive_kvm.c'))
 specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c'))
 specific_ss.add(when: 'CONFIG_LOONGSON_IPI', if_true: files('loongson_ipi.c'))
+specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c'))
 specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c'))
 specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c'))
 specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c'))
diff --git a/hw/intc/trace-events b/hw/intc/trace-events
index 3dcf147198..4e42360a60 100644
--- a/hw/intc/trace-events
+++ b/hw/intc/trace-events
@@ -307,6 +307,9 @@ sh_intc_set(int id, int enable) "setting interrupt group %d to %d"
 # loongson_ipi.c
 loongson_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
 loongson_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
+# loongarch_ipi.c
+loongarch_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
+loongarch_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
 # loongarch_pch_pic.c
 loongarch_pch_pic_irq_handler(int irq, int level) "irq %d level %d"
 loongarch_pch_pic_low_readw(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64
diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig
index 90a0dba9d5..830cfef72d 100644
--- a/hw/loongarch/Kconfig
+++ b/hw/loongarch/Kconfig
@@ -11,7 +11,7 @@ config LOONGARCH_VIRT
     select SERIAL
     select VIRTIO_PCI
     select PLATFORM_BUS
-    select LOONGSON_IPI
+    select LOONGARCH_IPI
     select LOONGARCH_PCH_PIC
     select LOONGARCH_PCH_MSI
     select LOONGARCH_EXTIOI
-- 
2.34.1