From 0bc6746e855621398940b51d9bae1827026ea672 Mon Sep 17 00:00:00 2001
From: Thomas Huth <huth@tuxfamily.org>
Date: Wed, 19 Aug 2020 08:52:01 +0200
Subject: [PATCH] hw/m68k: QOMify the mcf5206 system integration module

The mcf5206 system integration module should be a proper device.
Let's finally QOMify it.

Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20200819065201.4045-1-huth@tuxfamily.org>
---
 hw/m68k/an5206.c      | 14 +++++++++++--
 hw/m68k/mcf5206.c     | 46 +++++++++++++++++++++++++++++++++----------
 include/hw/m68k/mcf.h |  3 +--
 3 files changed, 49 insertions(+), 14 deletions(-)

diff --git a/hw/m68k/an5206.c b/hw/m68k/an5206.c
index 846f4e40c6..673898b0ea 100644
--- a/hw/m68k/an5206.c
+++ b/hw/m68k/an5206.c
@@ -21,7 +21,17 @@
 #define AN5206_MBAR_ADDR 0x10000000
 #define AN5206_RAMBAR_ADDR 0x20000000
 
-/* Board init.  */
+static void mcf5206_init(MemoryRegion *sysmem, uint32_t base)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_new(TYPE_MCF5206_MBAR);
+    s = SYS_BUS_DEVICE(dev);
+    sysbus_realize_and_unref(s, &error_fatal);
+
+    memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0));
+}
 
 static void an5206_init(MachineState *machine)
 {
@@ -51,7 +61,7 @@ static void an5206_init(MachineState *machine)
     memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
     memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
 
-    mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu);
+    mcf5206_init(address_space_mem, AN5206_MBAR_ADDR);
 
     /* Load kernel.  */
     if (!kernel_filename) {
diff --git a/hw/m68k/mcf5206.c b/hw/m68k/mcf5206.c
index 94a37a1a46..51d2e0da1c 100644
--- a/hw/m68k/mcf5206.c
+++ b/hw/m68k/mcf5206.c
@@ -15,6 +15,7 @@
 #include "qemu/timer.h"
 #include "hw/ptimer.h"
 #include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
 
 /* General purpose timer module.  */
 typedef struct {
@@ -159,6 +160,8 @@ static m5206_timer_state *m5206_timer_init(qemu_irq irq)
 /* System Integration Module.  */
 
 typedef struct {
+    SysBusDevice parent_obj;
+
     M68kCPU *cpu;
     MemoryRegion iomem;
     m5206_timer_state *timer[2];
@@ -174,6 +177,8 @@ typedef struct {
     uint8_t uivr[2];
 } m5206_mbar_state;
 
+#define MCF5206_MBAR(obj) OBJECT_CHECK(m5206_mbar_state, (obj), TYPE_MCF5206_MBAR)
+
 /* Interrupt controller.  */
 
 static int m5206_find_pending_irq(m5206_mbar_state *s)
@@ -257,8 +262,10 @@ static void m5206_mbar_set_irq(void *opaque, int irq, int level)
 
 /* System Integration Module.  */
 
-static void m5206_mbar_reset(m5206_mbar_state *s)
+static void m5206_mbar_reset(DeviceState *dev)
 {
+    m5206_mbar_state *s = MCF5206_MBAR(dev);
+
     s->scr = 0xc0;
     s->icr[1] = 0x04;
     s->icr[2] = 0x08;
@@ -578,24 +585,43 @@ static const MemoryRegionOps m5206_mbar_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-qemu_irq *mcf5206_init(MemoryRegion *sysmem, uint32_t base, M68kCPU *cpu)
+static void mcf5206_mbar_realize(DeviceState *dev, Error **errp)
 {
-    m5206_mbar_state *s;
+    m5206_mbar_state *s = MCF5206_MBAR(dev);
     qemu_irq *pic;
 
-    s = g_new0(m5206_mbar_state, 1);
-
     memory_region_init_io(&s->iomem, NULL, &m5206_mbar_ops, s,
                           "mbar", 0x00001000);
-    memory_region_add_subregion(sysmem, base, &s->iomem);
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
 
     pic = qemu_allocate_irqs(m5206_mbar_set_irq, s, 14);
     s->timer[0] = m5206_timer_init(pic[9]);
     s->timer[1] = m5206_timer_init(pic[10]);
     s->uart[0] = mcf_uart_init(pic[12], serial_hd(0));
     s->uart[1] = mcf_uart_init(pic[13], serial_hd(1));
-    s->cpu = cpu;
-
-    m5206_mbar_reset(s);
-    return pic;
+    s->cpu = M68K_CPU(qemu_get_cpu(0));
 }
+
+static void mcf5206_mbar_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+
+    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+    dc->desc = "MCF5206 system integration module";
+    dc->realize = mcf5206_mbar_realize;
+    dc->reset = m5206_mbar_reset;
+}
+
+static const TypeInfo mcf5206_mbar_info = {
+    .name          = TYPE_MCF5206_MBAR,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(m5206_mbar_state),
+    .class_init    = mcf5206_mbar_class_init,
+};
+
+static void mcf5206_mbar_register_types(void)
+{
+    type_register_static(&mcf5206_mbar_info);
+}
+
+type_init(mcf5206_mbar_register_types)
diff --git a/include/hw/m68k/mcf.h b/include/hw/m68k/mcf.h
index 0db49c5e60..decf17ce42 100644
--- a/include/hw/m68k/mcf.h
+++ b/include/hw/m68k/mcf.h
@@ -18,7 +18,6 @@ qemu_irq *mcf_intc_init(struct MemoryRegion *sysmem,
                         M68kCPU *cpu);
 
 /* mcf5206.c */
-qemu_irq *mcf5206_init(struct MemoryRegion *sysmem,
-                       uint32_t base, M68kCPU *cpu);
+#define TYPE_MCF5206_MBAR "mcf5206-mbar"
 
 #endif