haiku/headers/private/kernel/arch/x86/ioapic.h

/*
 * Copyright 2011, Michael Lotz, mmlr@mlotz.ch.
 * Distributed under the terms of the MIT License.
 */
#ifndef _KERNEL_ARCH_x86_IOAPIC_H
#define _KERNEL_ARCH_x86_IOAPIC_H

#include <SupportDefs.h>

struct kernel_args;

bool ioapic_is_interrupt_available(int32 gsi);

void ioapic_init(kernel_args* args);

#endif // _KERNEL_ARCH_x86_IOAPIC_H
* Move the legacy PIC and the IO-APIC code into their own source file. No functional change intended. * Use an appropriately sized sLevelTriggeredInterrupts for each controller type. This also fixes an out of bound access for IO-APICs with more than 32 entries and also returns the right mode in such cases. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41426 a95241bf-73f2-0310-859d-f6bbb57e9c96 2011-05-11 00:53:03 +00:00			`/*`
			`* Copyright 2011, Michael Lotz, mmlr@mlotz.ch.`
			`* Distributed under the terms of the MIT License.`
			`*/`
			`#ifndef _KERNEL_ARCH_x86_IOAPIC_H`
			`#define _KERNEL_ARCH_x86_IOAPIC_H`

* When initializing MSI support, don't assume a single 24 entry IO-APIC. Instead mark the ISA interrupts as unusable and then use ioapic_is_interrupt_available to determine if that vector is possibly taken by an IO-APIC. If IO-APICs are not used, this will simply always return false, leaving all vectors free for MSI use. * The msi_init() now has to be done after a potential IO-APIC init, so it is now done after ioapic_init() instead of inside apic_init(). * Add apic_disable_local_ints() to clear the local ints on the local APIC once we are in APIC mode (i.e. the IO-APIC is set up and we don't need the external routing anymore). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41445 a95241bf-73f2-0310-859d-f6bbb57e9c96 2011-05-11 18:05:05 +00:00			`#include <SupportDefs.h>`

* Move the legacy PIC and the IO-APIC code into their own source file. No functional change intended. * Use an appropriately sized sLevelTriggeredInterrupts for each controller type. This also fixes an out of bound access for IO-APICs with more than 32 entries and also returns the right mode in such cases. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41426 a95241bf-73f2-0310-859d-f6bbb57e9c96 2011-05-11 00:53:03 +00:00			`struct kernel_args;`

* When initializing MSI support, don't assume a single 24 entry IO-APIC. Instead mark the ISA interrupts as unusable and then use ioapic_is_interrupt_available to determine if that vector is possibly taken by an IO-APIC. If IO-APICs are not used, this will simply always return false, leaving all vectors free for MSI use. * The msi_init() now has to be done after a potential IO-APIC init, so it is now done after ioapic_init() instead of inside apic_init(). * Add apic_disable_local_ints() to clear the local ints on the local APIC once we are in APIC mode (i.e. the IO-APIC is set up and we don't need the external routing anymore). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41445 a95241bf-73f2-0310-859d-f6bbb57e9c96 2011-05-11 18:05:05 +00:00			`bool ioapic_is_interrupt_available(int32 gsi);`

* Move the legacy PIC and the IO-APIC code into their own source file. No functional change intended. * Use an appropriately sized sLevelTriggeredInterrupts for each controller type. This also fixes an out of bound access for IO-APICs with more than 32 entries and also returns the right mode in such cases. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41426 a95241bf-73f2-0310-859d-f6bbb57e9c96 2011-05-11 00:53:03 +00:00			`void ioapic_init(kernel_args* args);`

			`#endif // _KERNEL_ARCH_x86_IOAPIC_H`