TheeCSDump: PSD_IRQ

PSD_IRQ_REG

PSD_IRQ_REG keywords Optional, Default, Can't Block

Description Access IRQ related registers.

This function permits access to the IRQ related registers.

Mode Called in Kernel, and Interrupt Mode.

Entry Pointer to PSD_IRQ structure.

Exit
NO_ERROR operation completed successfully.
-1 operation failed.

Structures

typedef struct psd_irq_s {
   ulong_t flags;    (Input)
   ulong_t data;     (Input/Output)
   ulong_t procnum;  (Input)
} PSD_IRQ;

flags indicate which type of operation is to be performed.
IRQ_READ_IRR read the interrupt request register.
IRQ_READ_ISR read the in service register.
data contains the data read from a read request, or the data to write if a write request.
procnum is the processor number of where the operation should take place.

Notes If this function is omitted, OS/2 will perform all register operations for an 8259 Master/Slave based PIC system. The requests will be sent to CPU0 depending on the state of the INIT_GLOBAL_IRQ_ACCESS flag.

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PsdIrqReg

PSD_IRQ_REG