RTEMS
5.0.0
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Data structure and functions used to control i8259 chip. More...
Go to the source code of this file.
Macros | |
8259 edge/level control definitions at VIA | |
#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 |
PIC's command and mask registers | |
#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 */. | |
Command for specific EOI (End Of Interrupt): Interrupt acknowledge | |
#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) */. | |
Functions | |
Function Prototypes | |
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. More... | |
int | BSP_irq_enable_at_i8259s (const rtems_irq_number irqLine) |
function to enable a particular irq at 8259 level. More... | |
int | BSP_irq_ack_at_i8259s (const rtems_irq_number irqLine) |
function to acknowledge a particular irq at 8259 level. More... | |
int | BSP_irq_enabled_at_i8259s (const rtems_irq_number irqLine) |
function to check if a particular irq is enabled at 8259 level. | |
int | BSP_i8259s_int_process (void) |
void | BSP_rtems_irq_mng_init (unsigned cpuId) |
Type definition for RTEMS managed interrupts | |
typedef unsigned short | rtems_i8259_masks |
volatile rtems_i8259_masks | i8259s_cache |
Data structure and functions used to control i8259 chip.