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| author | H. Peter Anvin <hpa@zytor.com> | 2016-02-09 18:08:47 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2016-02-09 18:08:47 -0800 |
| commit | f2f897a1762fab84d2905f32b1c15dd7b42abb56 (patch) | |
| tree | a38f51d3f1fcbf44afddb4736d549c12eaf491be /gpxe/src/arch/i386/include/pic8259.h | |
| parent | 72d2959272b4616f17a97667e6dfa9d06bf109a3 (diff) | |
| download | syslinux-f2f897a1762fab84d2905f32b1c15dd7b42abb56.tar.gz | |
gpxe: delete long since obsolete snapshot of gPXE
gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'gpxe/src/arch/i386/include/pic8259.h')
| -rw-r--r-- | gpxe/src/arch/i386/include/pic8259.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/gpxe/src/arch/i386/include/pic8259.h b/gpxe/src/arch/i386/include/pic8259.h deleted file mode 100644 index f8e20c4c..00000000 --- a/gpxe/src/arch/i386/include/pic8259.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Basic support for controlling the 8259 Programmable Interrupt Controllers. - * - * Initially written by Michael Brown (mcb30). - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#ifndef PIC8259_H -#define PIC8259_H - -/* For segoff_t */ -#include "realmode.h" - -#define IRQ_PIC_CUTOFF 8 - -/* 8259 register locations */ -#define PIC1_ICW1 0x20 -#define PIC1_OCW2 0x20 -#define PIC1_OCW3 0x20 -#define PIC1_ICR 0x20 -#define PIC1_IRR 0x20 -#define PIC1_ISR 0x20 -#define PIC1_ICW2 0x21 -#define PIC1_ICW3 0x21 -#define PIC1_ICW4 0x21 -#define PIC1_IMR 0x21 -#define PIC2_ICW1 0xa0 -#define PIC2_OCW2 0xa0 -#define PIC2_OCW3 0xa0 -#define PIC2_ICR 0xa0 -#define PIC2_IRR 0xa0 -#define PIC2_ISR 0xa0 -#define PIC2_ICW2 0xa1 -#define PIC2_ICW3 0xa1 -#define PIC2_ICW4 0xa1 -#define PIC2_IMR 0xa1 - -/* Register command values */ -#define OCW3_ID 0x08 -#define OCW3_READ_IRR 0x03 -#define OCW3_READ_ISR 0x02 -#define ICR_EOI_NON_SPECIFIC 0x20 -#define ICR_EOI_NOP 0x40 -#define ICR_EOI_SPECIFIC 0x60 -#define ICR_EOI_SET_PRIORITY 0xc0 - -/* Macros to enable/disable IRQs */ -#define IMR_REG(x) ( (x) < IRQ_PIC_CUTOFF ? PIC1_IMR : PIC2_IMR ) -#define IMR_BIT(x) ( 1 << ( (x) % IRQ_PIC_CUTOFF ) ) -#define irq_enabled(x) ( ( inb ( IMR_REG(x) ) & IMR_BIT(x) ) == 0 ) -#define enable_irq(x) outb ( inb( IMR_REG(x) ) & ~IMR_BIT(x), IMR_REG(x) ) -#define disable_irq(x) outb ( inb( IMR_REG(x) ) | IMR_BIT(x), IMR_REG(x) ) - -/* Macros for acknowledging IRQs */ -#define ICR_REG( irq ) ( (irq) < IRQ_PIC_CUTOFF ? PIC1_ICR : PIC2_ICR ) -#define ICR_VALUE( irq ) ( (irq) % IRQ_PIC_CUTOFF ) -#define CHAINED_IRQ 2 - -/* Utility macros to convert IRQ numbers to INT numbers and INT vectors */ -#define IRQ_INT( irq ) ( ( ( (irq) - IRQ_PIC_CUTOFF ) ^ 0x70 ) & 0x7f ) - -/* Other constants */ -#define IRQ_MAX 15 -#define IRQ_NONE -1U - -/* Function prototypes - */ -void send_eoi ( unsigned int irq ); - -#endif /* PIC8259_H */ |