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Diffstat (limited to 'kernel/old/include/x86/pic.h')
-rw-r--r-- | kernel/old/include/x86/pic.h | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/kernel/old/include/x86/pic.h b/kernel/old/include/x86/pic.h deleted file mode 100644 index d4fa93b..0000000 --- a/kernel/old/include/x86/pic.h +++ /dev/null @@ -1,139 +0,0 @@ -/** -** @file pic.h -** -** @author Warren R. Carithers -** @author K. Reek -** -** Definitions of constants and macros for the Intel 8259 Programmable -** Interrupt Controller. -** -*/ - -#ifndef X86PIC_H_ -#define X86PIC_H_ - -/* -** Our expected configuration is two PICs, with the secondary connected -** through the IRQ2 pin of the primary. -*/ - -/* -** Port addresses for the command port and interrupt mask register port -** for both the primary and secondary PICs. -*/ -#define PIC1_CMD 0x20 // primary command -#define PIC1_DATA (PIC1_CMD + 1) // primary data / int mask register -#define PIC2_CMD 0xA0 // secondary command -#define PIC2_DATA (PIC2_CMD + 1) // secondary data / int mask register - -/* -** Initialization Command Word (ICW) definitions -** -** Initialization sequence: -** ICW1 Init command is sent to each command port. -** ICW2 vector commands are sent to the data ports. -** If "cascade mode" was selected, send ICW3 commands to the data ports. -** If "need ICW4" was selected, send ICW4 commands to the data ports. -** -** Following that sequence, the PIC is ready to accept interrupts; -** it will also accept Output Command Words (OCWs) to the data ports. -** -** PIC1_* defines are intended for the primary PIC -** PIC2_* defines are intended for the secondary PIC -** PIC_* defines are sent to both PICs -*/ - -/* -** ICW1: initialization, send to command port -*/ -#define PIC_CW1_INIT 0x10 // start initialization sequence -#define PIC_CW1_NEED4 0x01 // ICW4 will also be set -#define PIC_CW1_SINGLE 0x02 // select single (vs. cascade) mode -#define PIC_CW1_INTVAL 0x04 // set call interval to 4 (vs. 8) -#define PIC_CW1_LEVEL 0x08 // use level-triggered mode (vs. edge) - -/* -** ICW2: interrupt vector base offsets, send to data port -*/ -#define PIC1_CW2_VECBASE 0x20 // IRQ0 int vector number -#define PIC2_CW2_VECBASE 0x28 // IRQ8 int vector number - -/* -** ICW3: secondary::primary attachment, send to data port -*/ -#define PIC1_CW3_SEC_IRQ2 0x04 // bit mask: secondary is on pin 2 -#define PIC2_CW3_SEC_ID 0x02 // integer: secondary id - -/* -** ICW4: operating mode, send to data port -*/ -#define PIC_CW4_PM86 0x01 // 8086 mode (vs. 8080/8085) -#define PIC_CW4_AUTOEOI 0x02 // do auto eoi's -#define PIC_CW4_UNBUF 0x00 // unbuffered mode -#define PIC_CW4_SEC_BUF 0x08 // put secondary in buffered mode -#define PIC_CW4_PRI_BUF 0x0C // put primary in buffered mode -#define PIC_CW4_SFNMODE 0x10 // "special fully nested" mode - -/* -** Operation Control Words (OCWs) -** -** After the init sequence, can send these -*/ - -/* -** OCW1: interrupt mask; send to data port -*/ -#define PIC_MASK_NONE 0x00 // allow all interrupts -#define PIC_MASK_NO_IRQ0 0x01 // prevent IRQ0 interrupts -#define PIC_MASK_NO_IRQ1 0x02 // prevent IRQ1 interrupts -#define PIC_MASK_NO_IRQ2 0x04 // prevent IRQ2 interrupts -#define PIC_MASK_NO_IRQ3 0x08 // prevent IRQ3 interrupts -#define PIC_MASK_NO_IRQ4 0x10 // prevent IRQ4 interrupts -#define PIC_MASK_NO_IRQ5 0x20 // prevent IRQ5 interrupts -#define PIC_MASK_NO_IRQ6 0x40 // prevent IRQ6 interrupts -#define PIC_MASK_NO_IRQ7 0x80 // prevent IRQ7 interrupts -#define PIC_MASK_ALL 0xff // prevent all interrupts - -/* -** OCW2: EOI control, interrupt level; send to command port -*/ -#define PIC_LVL_0 0x00 // act on IRQ level 0 -#define PIC_LVL_1 0x01 // act on IRQ level 1 -#define PIC_LVL_2 0x02 // act on IRQ level 2 -#define PIC_LVL_3 0x03 // act on IRQ level 3 -#define PIC_LVL_4 0x04 // act on IRQ level 4 -#define PIC_LVL_5 0x05 // act on IRQ level 5 -#define PIC_LVL_6 0x06 // act on IRQ level 6 -#define PIC_LVL_7 0x07 // act on IRQ level 7 - -#define PIC_EOI_NON_SPEC 0x20 // non-specific EOI command -# define PIC_EOI PIC_EOI_NON_SPEC - -#define PIC_EOI_SPEC 0x60 // specific EOI command -# define PIC_SEOI PIC_EOI_SPEC -# define PIC_SEOI_LVL0 (PIC_EOI_SPEC | PIC_LVL_0) -# define PIC_SEOI_LVL1 (PIC_EOI_SPEC | PIC_LVL_1) -# define PIC_SEOI_LVL2 (PIC_EOI_SPEC | PIC_LVL_2) -# define PIC_SEOI_LVL3 (PIC_EOI_SPEC | PIC_LVL_3) -# define PIC_SEOI_LVL4 (PIC_EOI_SPEC | PIC_LVL_4) -# define PIC_SEOI_LVL5 (PIC_EOI_SPEC | PIC_LVL_5) -# define PIC_SEOI_LVL6 (PIC_EOI_SPEC | PIC_LVL_6) -# define PIC_SEOI_LVL7 (PIC_EOI_SPEC | PIC_LVL_7) - -#define PIC_EOI_ROT_NONSP 0xa0 // rotate on non-spec EOI cmd -#define PIC_EOI_SET_ROT_AUTO 0x80 // set "rotate in auto EOI mode" -#define PIC_EOI_CLR_ROT_AUTO 0x00 // clear "rotate in auto EOI mode" -#define PIC_EOI_ROT_SPEC 0xe0 // rotate on spec EOI cmd (+ level) -#define PIC_EOI_SET_PRIO 0xc0 // set priority (+ level) -#define PIC_EOI_NOP 0x40 // no operation - -/* -** OCW3: read requests, special mask mode; send to command port -*/ -#define PIC_READIRR 0x0a // read the IR register -#define PIC_READISR 0x0b // read the IS register -#define PIC_POLL 0x0c // poll -#define PIC_MASK_RESET 0x48 // reset special mask mode -#define PIC_MASK_SET 0x68 // set special mask mode - -#endif |