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rust: qom: add object creation functionality

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The basic object lifecycle test can now be implemented using safe code!

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-10-31 14:27:36 +01:00
parent 0fcccf3ff0
commit ec3eba9896
4 changed files with 48 additions and 34 deletions
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23
rust/hw/char/pl011/src/device.rs
View file

@ -10,11 +10,11 @@ use std::{
use qemu_api::{
bindings::{
error_fatal, hwaddr, memory_region_init_io, qdev_init_clock_in, qdev_new,
qdev_prop_set_chr, qemu_chr_fe_accept_input, qemu_chr_fe_ioctl, qemu_chr_fe_set_handlers,
qemu_chr_fe_write_all, qemu_irq, sysbus_connect_irq, sysbus_mmio_map,
sysbus_realize_and_unref, CharBackend, Chardev, Clock, ClockEvent, MemoryRegion,
QEMUChrEvent, CHR_IOCTL_SERIAL_SET_BREAK,
error_fatal, hwaddr, memory_region_init_io, qdev_init_clock_in, qdev_prop_set_chr,
qemu_chr_fe_accept_input, qemu_chr_fe_ioctl, qemu_chr_fe_set_handlers,
qemu_chr_fe_write_all, qemu_irq, sysbus_connect_irq, sysbus_mmio_map, sysbus_realize,
CharBackend, Chardev, Clock, ClockEvent, MemoryRegion, QEMUChrEvent,
CHR_IOCTL_SERIAL_SET_BREAK,
},
c_str, impl_vmstate_forward,
irq::InterruptSource,
@ -705,15 +705,18 @@ pub unsafe extern "C" fn pl011_create(
irq: qemu_irq,
chr: *mut Chardev,
) -> *mut DeviceState {
let pl011 = PL011State::new();
unsafe {
let dev: *mut DeviceState = qdev_new(PL011State::TYPE_NAME.as_ptr());
let sysbus: *mut SysBusDevice = dev.cast::<SysBusDevice>();
let dev = pl011.as_mut_ptr::<DeviceState>();
qdev_prop_set_chr(dev, c_str!("chardev").as_ptr(), chr);
sysbus_realize_and_unref(sysbus, addr_of_mut!(error_fatal));
let sysbus = pl011.as_mut_ptr::<SysBusDevice>();
sysbus_realize(sysbus, addr_of_mut!(error_fatal));
sysbus_mmio_map(sysbus, 0, addr);
sysbus_connect_irq(sysbus, 0, irq);
dev
// return the pointer, which is kept alive by the QOM tree; drop owned ref
pl011.as_mut_ptr()
}
}