1*4ed4da16SPaolo Bonzini // Copyright 2024 Red Hat, Inc. 2*4ed4da16SPaolo Bonzini // Author(s): Paolo Bonzini <pbonzini@redhat.com> 3*4ed4da16SPaolo Bonzini // SPDX-License-Identifier: GPL-2.0-or-later 4*4ed4da16SPaolo Bonzini 5*4ed4da16SPaolo Bonzini use std::ptr::addr_of; 6*4ed4da16SPaolo Bonzini 7*4ed4da16SPaolo Bonzini pub use bindings::{SysBusDevice, SysBusDeviceClass}; 8*4ed4da16SPaolo Bonzini 9*4ed4da16SPaolo Bonzini use crate::{bindings, cell::bql_locked, irq::InterruptSource}; 10*4ed4da16SPaolo Bonzini 11*4ed4da16SPaolo Bonzini impl SysBusDevice { 12*4ed4da16SPaolo Bonzini /// Return `self` cast to a mutable pointer, for use in calls to C code. 13*4ed4da16SPaolo Bonzini const fn as_mut_ptr(&self) -> *mut SysBusDevice { 14*4ed4da16SPaolo Bonzini addr_of!(*self) as *mut _ 15*4ed4da16SPaolo Bonzini } 16*4ed4da16SPaolo Bonzini 17*4ed4da16SPaolo Bonzini /// Expose an interrupt source outside the device as a qdev GPIO output. 18*4ed4da16SPaolo Bonzini /// Note that the ordering of calls to `init_irq` is important, since 19*4ed4da16SPaolo Bonzini /// whoever creates the sysbus device will refer to the interrupts with 20*4ed4da16SPaolo Bonzini /// a number that corresponds to the order of calls to `init_irq`. 21*4ed4da16SPaolo Bonzini pub fn init_irq(&self, irq: &InterruptSource) { 22*4ed4da16SPaolo Bonzini assert!(bql_locked()); 23*4ed4da16SPaolo Bonzini unsafe { 24*4ed4da16SPaolo Bonzini bindings::sysbus_init_irq(self.as_mut_ptr(), irq.as_ptr()); 25*4ed4da16SPaolo Bonzini } 26*4ed4da16SPaolo Bonzini } 27*4ed4da16SPaolo Bonzini } 28