ioapic.cpp File Reference

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Detailed Description

Advanced System Interrupt Controller.

#include <arch/ioapic.h>
#include <memory.h>

Include dependency graph for ioapic.cpp:

Functions
	Zygoma::ia32::IOApic::IOApic ()
	Constructs the IOAPIC.
u32	Zygoma::ia32::IOApic::id () const
	Gets the physical name of the IOAPIC.
void	Zygoma::ia32::IOApic::setId (u32 id)
	Sets the APIC bus ID of this device.
u32	Zygoma::ia32::IOApic::maxRedirectionEntry () const
	Gets the highest numbered interrupt pin on the IOAPIC (starts at zero).
u32	Zygoma::ia32::IOApic::version () const
	Identifies the hardware version of te IOAPIC.
u32	Zygoma::ia32::IOApic::arbitrationId () const
	Gets the current arbitration priority of the IOAPIC.
Zygoma::ia32::IOApicRedirection	Zygoma::ia32::IOApic::redirection (int i) const
	Gets the interrupt redirection entry for the given interrupt line.
void	Zygoma::ia32::IOApic::setRedirection (int i, Zygoma::ia32::IOApicRedirection entry)
	Sets the interrupt redirection entry for the given interrupt line.
std::ostream &	Zygoma::ia32::IOApic::printStream (std::ostream &ostr) const
	Dumps a description of the IOAPIC to an output stream.
Variables
const u08	IOAPICID = 0x00
	< IOAPIC ID
const u08	IOAPICVER = 0x01
	< IOAPIC version
const u08	IOAPICARB = 0x02
	< IOAPIC arbitration ID
const u08	IOREDTBL = 0x10
	< base of redirection table

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Function Documentation

u32 Zygoma::ia32::IOApic::arbitrationId (   )  const

Gets the current arbitration priority of the IOAPIC. This value is used among all the APICs on the bus to arbitrait bus ownership, using an autodecrement rotation scheme.

u32 Zygoma::ia32::IOApic::id (   )  const

Gets the physical name of the IOAPIC. All APIC devices in the system need to have a unique identification.

Zygoma::ia32::IOApic::IOApic (   )

Constructs the IOAPIC.

u32 Zygoma::ia32::IOApic::maxRedirectionEntry (   )  const

Gets the highest numbered interrupt pin on the IOAPIC (starts at zero).

std::ostream& Zygoma::ia32::IOApic::printStream (  std::ostream &  ostr  )  const

Dumps a description of the IOAPIC to an output stream. Here is the call graph for this function:

Zygoma::ia32::IOApicRedirection Zygoma::ia32::IOApic::redirection (  int  i  )  const

Gets the interrupt redirection entry for the given interrupt line. Parameters: i  [IN] The interrupt number. Returns: the redirection table entry for the indicated interrupt.

void Zygoma::ia32::IOApic::setId (  u32  id  )

Sets the APIC bus ID of this device. Also sets the current arbitration ID at the same time. Parameters: id  [IN] The new APIC bus ID. Only the low 4 bytes are used.

void Zygoma::ia32::IOApic::setRedirection (  int  i, Zygoma::ia32::IOApicRedirection  entry )

Sets the interrupt redirection entry for the given interrupt line. Parameters: i  [IN] The interrupt number. entry  [IN] The new table entry.

u32 Zygoma::ia32::IOApic::version (   )  const

Identifies the hardware version of te IOAPIC.

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Variable Documentation

const u08 IOAPICARB = 0x02 [static]

< IOAPIC arbitration ID

const u08 IOAPICID = 0x00 [static]

< IOAPIC ID

const u08 IOAPICVER = 0x01 [static]

< IOAPIC version

const u08 IOREDTBL = 0x10 [static]

< base of redirection table

u32 m_hi

u32 m_id

u32 m_lo

u32 m_mre

u32 m_reserved_0

u32 m_reserved_24

u32 m_reserved_28

u32 m_reserved_8

u32 m_version

struct { ... } u_data

Zygoma::ia32::IOApicRedirection u_entry

struct { ... } u_id

struct { ... } u_ver

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