14ed4da16SPaolo Bonzini // Copyright 2024 Red Hat, Inc. 24ed4da16SPaolo Bonzini // Author(s): Paolo Bonzini <pbonzini@redhat.com> 34ed4da16SPaolo Bonzini // SPDX-License-Identifier: GPL-2.0-or-later 44ed4da16SPaolo Bonzini 5*7bd8e3efSPaolo Bonzini use std::{ffi::CStr, ptr::addr_of}; 64ed4da16SPaolo Bonzini 74ed4da16SPaolo Bonzini pub use bindings::{SysBusDevice, SysBusDeviceClass}; 84ed4da16SPaolo Bonzini 9*7bd8e3efSPaolo Bonzini use crate::{bindings, cell::bql_locked, irq::InterruptSource, prelude::*}; 10*7bd8e3efSPaolo Bonzini 11*7bd8e3efSPaolo Bonzini unsafe impl ObjectType for SysBusDevice { 12*7bd8e3efSPaolo Bonzini type Class = SysBusDeviceClass; 13*7bd8e3efSPaolo Bonzini const TYPE_NAME: &'static CStr = 14*7bd8e3efSPaolo Bonzini unsafe { CStr::from_bytes_with_nul_unchecked(bindings::TYPE_SYS_BUS_DEVICE) }; 15*7bd8e3efSPaolo Bonzini } 164ed4da16SPaolo Bonzini 174ed4da16SPaolo Bonzini impl SysBusDevice { 184ed4da16SPaolo Bonzini /// Return `self` cast to a mutable pointer, for use in calls to C code. 194ed4da16SPaolo Bonzini const fn as_mut_ptr(&self) -> *mut SysBusDevice { 204ed4da16SPaolo Bonzini addr_of!(*self) as *mut _ 214ed4da16SPaolo Bonzini } 224ed4da16SPaolo Bonzini 234ed4da16SPaolo Bonzini /// Expose an interrupt source outside the device as a qdev GPIO output. 244ed4da16SPaolo Bonzini /// Note that the ordering of calls to `init_irq` is important, since 254ed4da16SPaolo Bonzini /// whoever creates the sysbus device will refer to the interrupts with 264ed4da16SPaolo Bonzini /// a number that corresponds to the order of calls to `init_irq`. 274ed4da16SPaolo Bonzini pub fn init_irq(&self, irq: &InterruptSource) { 284ed4da16SPaolo Bonzini assert!(bql_locked()); 294ed4da16SPaolo Bonzini unsafe { 304ed4da16SPaolo Bonzini bindings::sysbus_init_irq(self.as_mut_ptr(), irq.as_ptr()); 314ed4da16SPaolo Bonzini } 324ed4da16SPaolo Bonzini } 334ed4da16SPaolo Bonzini } 34