hw/loongarch: DINTC add a MemoryRegion

the DINTC use [2fe00000-2ff00000) Memory.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250916122109.749813-7-gaosong@loongson.cn>

1 files changed, 37 insertions, 1 deletions

diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index a89d1a1ca1..a7171a5ecc 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -28,6 +28,7 @@
 #include "hw/intc/loongarch_extioi.h"
 #include "hw/intc/loongarch_pch_pic.h"
 #include "hw/intc/loongarch_pch_msi.h"
+#include "hw/intc/loongarch_dintc.h"
 #include "hw/pci-host/ls7a.h"
 #include "hw/pci-host/gpex.h"
 #include "hw/misc/unimp.h"
@@ -386,7 +387,7 @@ static void virt_cpu_irq_init(LoongArchVirtMachineState *lvms)
 static void virt_irq_init(LoongArchVirtMachineState *lvms)
 {
     DeviceState *pch_pic, *pch_msi;
-    DeviceState *ipi, *extioi;
+    DeviceState *ipi, *extioi, *dintc;
     SysBusDevice *d;
     int i, start, num;
 
@@ -432,6 +433,33 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
      *    +--------+ +---------+ +---------+
      *    | UARTs  | | Devices | | Devices |
      *    +--------+ +---------+ +---------+
+     *
+     *
+     *  Advanced Extended IRQ model
+     *
+     *  +-----+     +---------------------------------+     +-------+
+     *  | IPI | --> |        CPUINTC                  | <-- | Timer |
+     *  +-----+     +---------------------------------+     +-------+
+     *                      ^            ^          ^
+     *                      |            |          |
+     *             +-------------+ +----------+ +---------+     +-------+
+     *             |   EIOINTC   | |   DINTC  | | LIOINTC | <-- | UARTs |
+     *             +-------------+ +----------+ +---------+     +-------+
+     *             ^            ^       ^
+     *             |            |       |
+     *        +---------+  +---------+  |
+     *        | PCH-PIC |  | PCH-MSI |  |
+     *        +---------+  +---------+  |
+     *          ^     ^           ^     |
+     *          |     |           |     |
+     *  +---------+ +---------+ +---------+
+     *  | Devices | | PCH-LPC | | Devices |
+     *  +---------+ +---------+ +---------+
+     *                  ^
+     *                  |
+     *             +---------+
+     *             | Devices |
+     *             +---------+
      */
 
     /* Create IPI device */
@@ -439,6 +467,14 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms)
     lvms->ipi = ipi;
     sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
 
+    /* Create DINTC device*/
+    if (virt_has_dmsi(lvms)) {
+        dintc = qdev_new(TYPE_LOONGARCH_DINTC);
+        lvms->dintc = dintc;
+        sysbus_realize_and_unref(SYS_BUS_DEVICE(dintc), &error_fatal);
+        sysbus_mmio_map(SYS_BUS_DEVICE(dintc), 0, VIRT_DINTC_BASE);
+    }
+
     /* Create EXTIOI device */
     extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
     lvms->extioi = extioi;