Interrupt Handler Support. More...

#include <rtems/irq.h>
#include <bsp/irq_supp.h>

Macros
#define	BSP_SHARED_HANDLER_SUPPORT 1

#define	BSP_POWERPC_IRQ_GENERIC_SUPPORT 1

#define	ISA8259_M_ELCR 0x4d0

#define	ISA8259_S_ELCR 0x4d1

#define	ELCRS_INT15_LVL 0x80

#define	ELCRS_INT14_LVL 0x40

#define	ELCRS_INT13_LVL 0x20

#define	ELCRS_INT12_LVL 0x10

#define	ELCRS_INT11_LVL 0x08

#define	ELCRS_INT10_LVL 0x04

#define	ELCRS_INT9_LVL 0x02

#define	ELCRS_INT8_LVL 0x01

#define	ELCRM_INT7_LVL 0x80

#define	ELCRM_INT6_LVL 0x40

#define	ELCRM_INT5_LVL 0x20

#define	ELCRM_INT4_LVL 0x10

#define	ELCRM_INT3_LVL 0x8

#define	ELCRM_INT2_LVL 0x4

#define	ELCRM_INT1_LVL 0x2

#define	ELCRM_INT0_LVL 0x1

#define	PIC_MASTER_COMMAND_IO_PORT 0x20 /* Master PIC command register */

#define	PIC_SLAVE_COMMAND_IO_PORT 0xa0 /* Slave PIC command register */

#define	PIC_MASTER_IMR_IO_PORT 0x21 /* Master PIC Interrupt Mask Register */

#define	PIC_SLAVE_IMR_IO_PORT 0xa1 /* Slave PIC Interrupt Mask Register */

#define	PIC_EOSI 0x60 /* End of Specific Interrupt (EOSI) */

#define	SLAVE_PIC_EOSI 0x62 /* End of Specific Interrupt (EOSI) for cascade */

#define	PIC_EOI 0x20 /* Generic End of Interrupt (EOI) */

#define	BSP_ISA_IRQ_NUMBER (16)

#define	BSP_ISA_IRQ_LOWEST_OFFSET (0)

#define	BSP_ISA_IRQ_MAX_OFFSET (BSP_ISA_IRQ_LOWEST_OFFSET + BSP_ISA_IRQ_NUMBER - 1)

#define	BSP_PCI_IRQ_NUMBER (16)

#define	BSP_PCI_IRQ_LOWEST_OFFSET (BSP_ISA_IRQ_NUMBER)

#define	BSP_PCI_IRQ_MAX_OFFSET (BSP_PCI_IRQ_LOWEST_OFFSET + BSP_PCI_IRQ_NUMBER - 1)

#define	BSP_PROCESSOR_IRQ_NUMBER (1)

#define	BSP_PROCESSOR_IRQ_LOWEST_OFFSET (BSP_PCI_IRQ_MAX_OFFSET + 1)

#define	BSP_PROCESSOR_IRQ_MAX_OFFSET (BSP_PROCESSOR_IRQ_LOWEST_OFFSET + BSP_PROCESSOR_IRQ_NUMBER - 1)

#define	BSP_MISC_IRQ_NUMBER (8)

#define	BSP_MISC_IRQ_LOWEST_OFFSET (BSP_PROCESSOR_IRQ_MAX_OFFSET + 1)

#define	BSP_MISC_IRQ_MAX_OFFSET (BSP_MISC_IRQ_LOWEST_OFFSET + BSP_MISC_IRQ_NUMBER - 1)

#define	BSP_IRQ_NUMBER (BSP_MISC_IRQ_MAX_OFFSET + 1)

#define	BSP_LOWEST_OFFSET (BSP_ISA_IRQ_LOWEST_OFFSET)

#define	BSP_MAX_OFFSET (BSP_MISC_IRQ_MAX_OFFSET)

#define	BSP_INTERRUPT_VECTOR_COUNT (BSP_MAX_OFFSET + 1)

#define	BSP_ISA_PERIODIC_TIMER (0)

#define	BSP_ISA_KEYBOARD (1)

#define	BSP_ISA_UART_COM2_IRQ (3)

#define	BSP_ISA_UART_COM1_IRQ (4)

#define	BSP_ISA_RT_TIMER1 (8)

#define	BSP_ISA_RT_TIMER3 (10)

#define	BSP_PCI_IRQ0 (BSP_PCI_IRQ_LOWEST_OFFSET)

#define	BSP_PCI_ISA_BRIDGE_IRQ (BSP_PCI_IRQ0)

#define	BSP_UART_COM1_IRQ BSP_ISA_UART_COM1_IRQ

#define	BSP_UART_COM2_IRQ BSP_ISA_UART_COM2_IRQ

#define	BSP_DECREMENTER (BSP_PROCESSOR_IRQ_LOWEST_OFFSET)

Typedefs
typedef unsigned short	rtems_i8259_masks

Functions
void	BSP_i8259s_init (void)

int	BSP_irq_disable_at_i8259s (const rtems_irq_number irqLine)
	function to disable a particular irq at 8259 level.

int	BSP_irq_enable_at_i8259s (const rtems_irq_number irqLine)
	function to enable a particular irq at 8259 level.

int	BSP_irq_ack_at_i8259s (const rtems_irq_number irqLine)
	function to acknowledge a particular irq at 8259 level.

int	BSP_irq_enabled_at_i8259s (const rtems_irq_number irqLine)
	function to check if a particular irq is enabled at 8259 level.

unsigned short	BSP_irq_suspend_i8259s (unsigned short mask)

void	BSP_irq_resume_i8259s (unsigned short in_progress_save)

void	BSP_rtems_irq_mng_init (unsigned cpuId)

Variables
volatile rtems_i8259_masks	i8259s_cache

Detailed Description

Interrupt Handler Support.

This include file describe the data structure and the functions implemented by RTEMS to write interrupt handlers.

This code is heavily inspired by the public specification of STREAM V2 that can be found at :

http://www.chorus.com/Documentation/index.html by following the STREAM API Specification Document link.

Macros

Typedefs

Functions

Variables

Detailed Description