bjorn3
54 lines
1.1 KiB
Rust
54 lines
1.1 KiB
Rust
#[derive(Clone, Copy, Debug)]
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#[repr(u8)]
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pub enum IpiKind {
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Wakeup = 0x40,
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Tlb = 0x41,
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Switch = 0x42,
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Pit = 0x43,
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#[cfg(feature = "profiling")]
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Profile = 0x44,
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}
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#[derive(Clone, Copy, Debug)]
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#[repr(u8)]
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pub enum IpiTarget {
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Current = 1,
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All = 2,
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Other = 3,
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}
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#[inline(always)]
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pub fn ipi(kind: IpiKind, target: IpiTarget) {
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use crate::device::local_apic::the_local_apic;
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if cfg!(not(feature = "multi_core")) {
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return;
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}
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#[cfg(feature = "profiling")]
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if matches!(kind, IpiKind::Profile) {
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let icr = (target as u64) << 18 | 1 << 14 | 0b100 << 8;
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unsafe { the_local_apic().set_icr(icr) };
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return;
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}
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let icr = (target as u64) << 18 | 1 << 14 | (kind as u64);
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unsafe { the_local_apic().set_icr(icr) };
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}
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#[inline(always)]
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pub fn ipi_single(kind: IpiKind, target: &crate::percpu::PercpuBlock) {
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use crate::device::local_apic::the_local_apic;
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if cfg!(not(feature = "multi_core")) {
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return;
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}
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if let Some(apic_id) = target.misc_arch_info.apic_id_opt.get() {
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unsafe {
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the_local_apic().ipi(apic_id, kind);
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}
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}
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}
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