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serial: start making SerialMM a sysbus device

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Memory mapped serial device is in fact a sysbus device. The following
patches will make use of sysbus facilities for resource and
registration. In particular, "serial-mm: use sysbus facilities" will
move internal serial realization to serial_mm_realize callback to
follow qdev best practices.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Marc-André Lureau 2019-10-23 17:50:06 +02:00
parent b9975000a0
commit 490a9d9b36
5 changed files with 73 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

20
include/hw/char/serial.h
View file

@ -57,7 +57,6 @@ typedef struct SerialState {
qemu_irq irq;
CharBackend chr;
int last_break_enable;
int it_shift;
uint32_t baudbase;
uint32_t tsr_retry;
guint watch_tag;
@ -80,6 +79,14 @@ typedef struct SerialState {
MemoryRegion io;
} SerialState;
typedef struct SerialMM {
SysBusDevice parent;
SerialState serial;
int it_shift;
} SerialMM;
extern const VMStateDescription vmstate_serial;
extern const MemoryRegionOps serial_io_ops;
@ -88,12 +95,15 @@ void serial_set_frequency(SerialState *s, uint32_t frequency);
#define TYPE_SERIAL "serial"
#define SERIAL(s) OBJECT_CHECK(SerialState, (s), TYPE_SERIAL)
#define TYPE_SERIAL_MM "serial-mm"
#define SERIAL_MM(s) OBJECT_CHECK(SerialMM, (s), TYPE_SERIAL_MM)
SerialState *serial_init(int base, qemu_irq irq, int baudbase,
Chardev *chr, MemoryRegion *system_io);
SerialState *serial_mm_init(MemoryRegion *address_space,
hwaddr base, int it_shift,
qemu_irq irq, int baudbase,
Chardev *chr, enum device_endian end);
SerialMM *serial_mm_init(MemoryRegion *address_space,
hwaddr base, int it_shift,
qemu_irq irq, int baudbase,
Chardev *chr, enum device_endian end);
/* serial-isa.c */