[PULL 10/24] q800: introduce mac-io container memory region

[Laurent Vivier]

From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Move all devices from the IO region to within the container in preparation
for updating the IO aliasing mechanism.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230621085353.113233-11-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 include/hw/m68k/q800.h | 1 +
 hw/m68k/q800.c         | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h
index fda42e0a1c30..17067dfad791 100644
--- a/include/hw/m68k/q800.h
+++ b/include/hw/m68k/q800.h
@@ -39,6 +39,7 @@ struct Q800MachineState {
     M68kCPU cpu;
     MemoryRegion rom;
     GLUEState glue;
+    MemoryRegion macio;
 };
 
 #define TYPE_Q800_MACHINE MACHINE_TYPE_NAME("q800")
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index 505e50d4af2e..359bdf3443a6 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -177,6 +177,12 @@ static void q800_machine_init(MachineState *machine)
     /* RAM */
     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
+    /*
+     * Create container for all IO devices
+     */
+    memory_region_init(&m->macio, OBJECT(machine), "mac-io", IO_SLICE);
+    memory_region_add_subregion(get_system_memory(), IO_BASE, &m->macio);
+
     /*
      * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated
      * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE
-- 
2.40.1