diff options
| -rw-r--r-- | hw/m68k/q800.c | 82 |
1 files changed, 70 insertions, 12 deletions
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c index f9a2be776e..2af0e2532e 100644 --- a/hw/m68k/q800.c +++ b/hw/m68k/q800.c @@ -48,6 +48,7 @@ #include "sysemu/qtest.h" #include "sysemu/runstate.h" #include "sysemu/reset.h" +#include "migration/vmstate.h" #define MACROM_ADDR 0x40800000 #define MACROM_SIZE 0x00100000 @@ -95,10 +96,14 @@ * CPU. */ -typedef struct { +#define TYPE_GLUE "q800-glue" +OBJECT_DECLARE_SIMPLE_TYPE(GLUEState, GLUE) + +struct GLUEState { + SysBusDevice parent_obj; M68kCPU *cpu; uint8_t ipr; -} GLUEState; +}; static void GLUE_set_irq(void *opaque, int irq, int level) { @@ -120,6 +125,58 @@ static void GLUE_set_irq(void *opaque, int irq, int level) m68k_set_irq_level(s->cpu, 0, 0); } +static void glue_reset(DeviceState *dev) +{ + GLUEState *s = GLUE(dev); + + s->ipr = 0; +} + +static const VMStateDescription vmstate_glue = { + .name = "q800-glue", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT8(ipr, GLUEState), + VMSTATE_END_OF_LIST(), + }, +}; + +/* + * If the m68k CPU implemented its inbound irq lines as GPIO lines + * rather than via the m68k_set_irq_level() function we would not need + * this cpu link property and could instead provide outbound IRQ lines + * that the board could wire up to the CPU. + */ +static Property glue_properties[] = { + DEFINE_PROP_LINK("cpu", GLUEState, cpu, TYPE_M68K_CPU, M68kCPU *), + DEFINE_PROP_END_OF_LIST(), +}; + +static void glue_init(Object *obj) +{ + DeviceState *dev = DEVICE(obj); + + qdev_init_gpio_in(dev, GLUE_set_irq, 8); +} + +static void glue_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_glue; + dc->reset = glue_reset; + device_class_set_props(dc, glue_properties); +} + +static const TypeInfo glue_info = { + .name = TYPE_GLUE, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(GLUEState), + .instance_init = glue_init, + .class_init = glue_class_init, +}; + static void main_cpu_reset(void *opaque) { M68kCPU *cpu = opaque; @@ -180,8 +237,7 @@ static void q800_init(MachineState *machine) SysBusDevice *sysbus; BusState *adb_bus; NubusBus *nubus; - GLUEState *irq; - qemu_irq *pic; + DeviceState *glue; DriveInfo *dinfo; linux_boot = (kernel_filename != NULL); @@ -215,10 +271,9 @@ static void q800_init(MachineState *machine) } /* IRQ Glue */ - - irq = g_new0(GLUEState, 1); - irq->cpu = cpu; - pic = qemu_allocate_irqs(GLUE_set_irq, irq, 8); + glue = qdev_new(TYPE_GLUE); + object_property_set_link(OBJECT(glue), "cpu", OBJECT(cpu), &error_abort); + sysbus_realize_and_unref(SYS_BUS_DEVICE(glue), &error_fatal); /* VIA */ @@ -230,8 +285,10 @@ static void q800_init(MachineState *machine) sysbus = SYS_BUS_DEVICE(via_dev); sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_mmio_map(sysbus, 0, VIA_BASE); - qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, pic[0]); - qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, pic[1]); + qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, + qdev_get_gpio_in(glue, 0)); + qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, + qdev_get_gpio_in(glue, 1)); adb_bus = qdev_get_child_bus(via_dev, "adb.0"); @@ -272,7 +329,7 @@ static void q800_init(MachineState *machine) sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_mmio_map(sysbus, 0, SONIC_BASE); sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE); - sysbus_connect_irq(sysbus, 0, pic[2]); + sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(glue, 2)); /* SCC */ @@ -294,7 +351,7 @@ static void q800_init(MachineState *machine) qdev_realize_and_unref(escc_orgate, NULL, &error_fatal); sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(escc_orgate, 0)); sysbus_connect_irq(sysbus, 1, qdev_get_gpio_in(escc_orgate, 1)); - qdev_connect_gpio_out(DEVICE(escc_orgate), 0, pic[3]); + qdev_connect_gpio_out(DEVICE(escc_orgate), 0, qdev_get_gpio_in(glue, 3)); sysbus_mmio_map(sysbus, 0, SCC_BASE); /* SCSI */ @@ -456,6 +513,7 @@ static const TypeInfo q800_machine_typeinfo = { static void q800_machine_register_types(void) { type_register_static(&q800_machine_typeinfo); + type_register_static(&glue_info); } type_init(q800_machine_register_types) |