Pic Class Reference

Encapsulation of the platforms interrupt controller. More...

#include <pic.h>

List of all members.

Public Types
typedef unsigned	Status
	The type holding the saved Pic state.
enum	{   MASTER_PIC_BASE = 0x20, SLAVES_PIC_BASE = 0xa0, OFF_ICW = 0x00, OFF_OCW = 0x01,   MASTER_ICW = MASTER_PIC_BASE + OFF_ICW, MASTER_OCW = MASTER_PIC_BASE + OFF_OCW, SLAVES_ICW = SLAVES_PIC_BASE + OFF_ICW, SLAVES_OCW = SLAVES_PIC_BASE + OFF_OCW,   ICW_TEMPLATE = 0x10, LEVL_TRIGGER = 0x08, EDGE_TRIGGER = 0x00, ADDR_INTRVL4 = 0x04,   ADDR_INTRVL8 = 0x00, SINGLE__MODE = 0x02, CASCADE_MODE = 0x00, ICW4__NEEDED = 0x01,   NO_ICW4_NEED = 0x00, SLAVE_ON_IR0 = 0x01, SLAVE_ON_IR1 = 0x02, SLAVE_ON_IR2 = 0x04,   SLAVE_ON_IR3 = 0x08, SLAVE_ON_IR4 = 0x10, SLAVE_ON_IR5 = 0x20, SLAVE_ON_IR6 = 0x40,   SLAVE_ON_IR7 = 0x80, I_AM_SLAVE_0 = 0x00, I_AM_SLAVE_1 = 0x01, I_AM_SLAVE_2 = 0x02,   I_AM_SLAVE_3 = 0x03, I_AM_SLAVE_4 = 0x04, I_AM_SLAVE_5 = 0x05, I_AM_SLAVE_6 = 0x06,   I_AM_SLAVE_7 = 0x07, SNF_MODE_ENA = 0x10, SNF_MODE_DIS = 0x00, BUFFERD_MODE = 0x08,   NONBUFD_MODE = 0x00, AUTO_EOI_MOD = 0x02, NRML_EOI_MOD = 0x00, I8086_EMM_MOD = 0x01,   SET_MCS_MODE = 0x00, PICM_MASK = 0xFF, PICS_MASK = 0xFF, NON_SPEC_EOI = 0x20,   SPECIFIC_EOI = 0x60, ROT_NON_SPEC = 0xa0, SET_ROT_AEOI = 0x80, RSET_ROTAEOI = 0x00,   ROT_SPEC_EOI = 0xe0, SET_PRIORITY = 0xc0, NO_OPERATION = 0x40, SND_EOI_IR0 = 0x00,   SND_EOI_IR1 = 0x01, SND_EOI_IR2 = 0x02, SND_EOI_IR3 = 0x03, SND_EOI_IR4 = 0x04,   SND_EOI_IR5 = 0x05, SND_EOI_IR6 = 0x06, SND_EOI_IR7 = 0x07, OCW_TEMPLATE = 0x08,   SPECIAL_MASK = 0x40, MASK_MDE_SET = 0x20, MASK_MDE_RST = 0x00, POLL_COMMAND = 0x04,   NO_POLL_CMND = 0x00, READ_NEXT_RD = 0x02, READ_IR_ONRD = 0x00, READ_IS_ONRD = 0x01,   PICM_ICW1, PICM_ICW3 = SLAVE_ON_IR2, PICM_ICW4, PICS_ICW1,   PICS_ICW3 = I_AM_SLAVE_2, PICS_ICW4 }
Static Public Member Functions
static void	init ()
	Static initalization of the interrupt controller.
static void	disable (unsigned irqnum)
	Disable the given irq.
static void	enable (unsigned irqnum, unsigned prio=0)
	Enable the given irq.
static void	acknowledge (unsigned irq)
	Acknowledge the given IRQ.
static void	block (unsigned irq)
	Block the given IRQ til the next ACK.
static void	disable_locked (unsigned irqnum)
	Disable the given irq (without lock protection).
static void	enable_locked (unsigned irqnum, unsigned prio=0)
	Enable the given irq (without lock protection).
static void	block_locked (unsigned irqnum)
	Temporarily block the IRQ til the next ACK.
static Status	disable_all_save ()
	Disable all IRQ's and and return the old Pic state.
static void	restore_all (Status s)
	Restore the IRQ's to the saved state s.
static void	acknowledge_locked (unsigned irq)
	Acknowledge the given IRQ.
Static Public Attributes
static int	special_fully_nested_mode = 1
Static Private Member Functions
static FIASCO_INIT void	pic_init (unsigned char master_base, unsigned char slave_base)

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Detailed Description

Encapsulation of the platforms interrupt controller.

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Member Typedef Documentation

typedef unsigned Pic::Status

The type holding the saved Pic state.

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Member Enumeration Documentation

anonymous enum

Enumeration values: MASTER_PIC_BASE  SLAVES_PIC_BASE  OFF_ICW  OFF_OCW  MASTER_ICW  MASTER_OCW  SLAVES_ICW  SLAVES_OCW  ICW_TEMPLATE  LEVL_TRIGGER  EDGE_TRIGGER  ADDR_INTRVL4  ADDR_INTRVL8  SINGLE__MODE  CASCADE_MODE  ICW4__NEEDED  NO_ICW4_NEED  SLAVE_ON_IR0  SLAVE_ON_IR1  SLAVE_ON_IR2  SLAVE_ON_IR3  SLAVE_ON_IR4  SLAVE_ON_IR5  SLAVE_ON_IR6  SLAVE_ON_IR7  I_AM_SLAVE_0  I_AM_SLAVE_1  I_AM_SLAVE_2  I_AM_SLAVE_3  I_AM_SLAVE_4  I_AM_SLAVE_5  I_AM_SLAVE_6  I_AM_SLAVE_7  SNF_MODE_ENA  SNF_MODE_DIS  BUFFERD_MODE  NONBUFD_MODE  AUTO_EOI_MOD  NRML_EOI_MOD  I8086_EMM_MOD  SET_MCS_MODE  PICM_MASK  PICS_MASK  NON_SPEC_EOI  SPECIFIC_EOI  ROT_NON_SPEC  SET_ROT_AEOI  RSET_ROTAEOI  ROT_SPEC_EOI  SET_PRIORITY  NO_OPERATION  SND_EOI_IR0  SND_EOI_IR1  SND_EOI_IR2  SND_EOI_IR3  SND_EOI_IR4  SND_EOI_IR5  SND_EOI_IR6  SND_EOI_IR7  OCW_TEMPLATE  SPECIAL_MASK  MASK_MDE_SET  MASK_MDE_RST  POLL_COMMAND  NO_POLL_CMND  READ_NEXT_RD  READ_IR_ONRD  READ_IS_ONRD  PICM_ICW1  PICM_ICW3  PICM_ICW4  PICS_ICW1  PICS_ICW3  PICS_ICW4

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Member Function Documentation

void Pic::acknowledge (  unsigned  irq  )  [inline, static]

Acknowledge the given IRQ.

void Pic::acknowledge_locked (  unsigned  irq  )  [inline, static]

Acknowledge the given IRQ. Precondition: The Cpu_lock must be locked (cli'ed). Parameters: irq,the  irq to acknowledge. This function must be implemented in the architecture specific part (e.g. pic-i8259.cpp).

void Pic::block (  unsigned  irq  )  [inline, static]

Block the given IRQ til the next ACK.

static void Pic::block_locked (  unsigned  irqnum  )  [static]

Temporarily block the IRQ til the next ACK. Precondition: The Cpu_lock must be locked (cli'ed) This function must be implemented in the architecture specific part (e.g. pic-i8259.cpp).

void Pic::disable (  unsigned  irqnum  )  [inline, static]

Disable the given irq.

Pic::Status Pic::disable_all_save (   )  [inline, static]

Disable all IRQ's and and return the old Pic state. Precondition: Must be done with disabled interrupts.

void Pic::disable_locked (  unsigned  irqnum  )  [inline, static]

Disable the given irq (without lock protection). Precondition: The Cpu_lock must be locked (cli'ed) This function must be implemented in the architecture specific part (e.g. pic-i8259.cpp).

void Pic::enable (  unsigned  irqnum, unsigned  prio = 0 )  [inline, static]

Enable the given irq.

void Pic::enable_locked (  unsigned  irqnum, unsigned  prio = 0 )  [inline, static]

Enable the given irq (without lock protection). Precondition: The Cpu_lock must be locked (cli'ed) This function must be implemented in the architecture specific part (e.g. pic-i8259.cpp).

FIASCO_INIT void Pic::init (   )  [static]

Static initalization of the interrupt controller.

FIASCO_INIT void Pic::pic_init (  unsigned char  master_base, unsigned char  slave_base )  [static, private]

void Pic::restore_all (  Status  s  )  [inline, static]

Restore the IRQ's to the saved state s. Precondition: Must be done with disabled interrupts. Parameters: s,the  saved state.

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Member Data Documentation

int Pic::special_fully_nested_mode = 1 [static]

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The documentation for this class was generated from the following files:

• pic.h
• pic-i8259.cc

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