28c78fe818
Directly set the slot name when creating the device, to display the device name in trace events. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> Message-Id: <20200510152840.13558-8-f4bug@amsat.org>
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/*
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* QEMU Empty Slot
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*
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* The empty_slot device emulates known to a bus but not connected devices.
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*
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* Copyright (c) 2010 Artyom Tarasenko
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*
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* This code is licensed under the GNU GPL v2 or (at your option) any later
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* version.
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*/
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#include "qemu/osdep.h"
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#include "hw/sysbus.h"
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#include "hw/qdev-properties.h"
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#include "hw/misc/empty_slot.h"
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#include "trace.h"
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#define TYPE_EMPTY_SLOT "empty_slot"
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#define EMPTY_SLOT(obj) OBJECT_CHECK(EmptySlot, (obj), TYPE_EMPTY_SLOT)
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typedef struct EmptySlot {
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SysBusDevice parent_obj;
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MemoryRegion iomem;
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char *name;
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uint64_t size;
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} EmptySlot;
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static uint64_t empty_slot_read(void *opaque, hwaddr addr,
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unsigned size)
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{
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EmptySlot *s = EMPTY_SLOT(opaque);
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trace_empty_slot_write(addr, size << 1, 0, size, s->name);
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return 0;
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}
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static void empty_slot_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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EmptySlot *s = EMPTY_SLOT(opaque);
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trace_empty_slot_write(addr, size << 1, val, size, s->name);
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}
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static const MemoryRegionOps empty_slot_ops = {
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.read = empty_slot_read,
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.write = empty_slot_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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};
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void empty_slot_init(const char *name, hwaddr addr, uint64_t slot_size)
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{
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if (slot_size > 0) {
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/* Only empty slots larger than 0 byte need handling. */
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DeviceState *dev;
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dev = qdev_create(NULL, TYPE_EMPTY_SLOT);
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qdev_prop_set_uint64(dev, "size", slot_size);
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qdev_init_nofail(dev);
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sysbus_mmio_map_overlap(SYS_BUS_DEVICE(dev), 0, addr, -10000);
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}
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}
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static void empty_slot_realize(DeviceState *dev, Error **errp)
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{
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EmptySlot *s = EMPTY_SLOT(dev);
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if (s->name == NULL) {
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s->name = g_strdup("empty-slot");
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}
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memory_region_init_io(&s->iomem, OBJECT(s), &empty_slot_ops, s,
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s->name, s->size);
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sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
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}
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static Property empty_slot_properties[] = {
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DEFINE_PROP_UINT64("size", EmptySlot, size, 0),
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DEFINE_PROP_STRING("name", EmptySlot, name),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void empty_slot_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = empty_slot_realize;
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device_class_set_props(dc, empty_slot_properties);
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set_bit(DEVICE_CATEGORY_MISC, dc->categories);
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}
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static const TypeInfo empty_slot_info = {
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.name = TYPE_EMPTY_SLOT,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(EmptySlot),
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.class_init = empty_slot_class_init,
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};
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static void empty_slot_register_types(void)
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{
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type_register_static(&empty_slot_info);
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}
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type_init(empty_slot_register_types)
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