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/* Copyright (c) [2023] [Syswonder Community]
 *   [Rukos] is licensed under Mulan PSL v2.
 *   You can use this software according to the terms and conditions of the Mulan PSL v2.
 *   You may obtain a copy of Mulan PSL v2 at:
 *               http://license.coscl.org.cn/MulanPSL2
 *   THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 *   See the Mulan PSL v2 for more details.
 */

//! Interrupt management.

use handler_table::HandlerTable;

use crate::platform::irq::MAX_IRQ_COUNT;

pub use crate::platform::irq::{dispatch_irq, register_handler, set_enable};

/// The type if an IRQ handler.
pub type IrqHandler = handler_table::Handler;

static IRQ_HANDLER_TABLE: HandlerTable<MAX_IRQ_COUNT> = HandlerTable::new();

/// Platform-independent IRQ dispatching.
#[allow(dead_code)]
pub(crate) fn dispatch_irq_common(irq_num: usize) {
    trace!("IRQ {}", irq_num);
    if !IRQ_HANDLER_TABLE.handle(irq_num) {
        warn!("Unhandled IRQ {}", irq_num);
    }
}

/// Platform-independent IRQ handler registration.
///
/// It also enables the IRQ if the registration succeeds. It returns `false` if
/// the registration failed.
#[allow(dead_code)]
pub(crate) fn register_handler_common(irq_num: usize, handler: IrqHandler) -> bool {
    if irq_num < MAX_IRQ_COUNT && IRQ_HANDLER_TABLE.register_handler(irq_num, handler) {
        set_enable(irq_num, true);
        return true;
    }
    warn!("register handler for IRQ {} failed", irq_num);
    false
}