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Update, based on i8259a manual.

This commit is contained in:
thorpej 2001-06-21 18:57:04 +00:00
parent ad2b5880f0
commit 2ab206fbb5
1 changed files with 14 additions and 19 deletions
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33
sys/dev/ic/i8259reg.h
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@ -1,4 +1,4 @@
/* $NetBSD: i8259reg.h,v 1.1 2001/06/21 03:43:43 thorpej Exp $ */
/* $NetBSD: i8259reg.h,v 1.2 2001/06/21 18:57:04 thorpej Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -55,16 +55,17 @@
#define PIC_ICW1 0x00 /* Initialization Command Word 1 (w) */
#define ICW1_IC4 (1U << 0) /* ICW4 Write Required */
#define ICW1_SNGL (1U << 1) /* 1 == single, 0 == cascade */
#define ICW1_ADI (1U << 2) /* XXX */
#define ICW1_ADI (1U << 2) /* CALL address interval */
#define ICW1_LTIM (1U << 3) /* 1 == intrs are level trigger */
#define ICW_SELECT(x) ((x) << 4) /* select ICW */
#define ICW1_SELECT (1U << 4) /* select ICW1 */
#define ICW1_IVA(x) ((x) << 5) /* interrupt vector address (MCS-80) */
#define PIC_ICW2 0x01 /* Initialization Command Word 2 (w) */
#define ICW2_VECTOR(x) ((x) & 0xf8) /* vector base address */
#define ICW2_IRL(x) ((x) << 0) /* interrupt request level */
#define PIC_ICW3 0x01 /* Initialization Command Word 3 (w) */
#define ICW3_CASCADE (1U << 2) /* cascaded mode enable */
#define ICW3_CASCADE(x) (1U << (x)) /* cascaded mode enable */
#define ICW3_SIC(x) ((x) << 0) /* slave identifcation code */
#define PIC_ICW4 0x01 /* Initialization Command Word 4 (w) */
@ -82,26 +83,20 @@
#define PIC_OCW2 0x00 /* Operational Control Word 2 (w) */
#define OCW2_SELECT (0) /* select OCW2 */
#define OCW2_OP(x) ((x) << 5) /* operation; see below */
#define OCW3_EOI (1U << 5) /* EOI */
#define OCW3_SL (1U << 6) /* specific */
#define OCW3_R (1U << 7) /* rotate */
#define OCW2_ILS(x) ((x) << 0) /* interrupt level select */
#define OCW2_OP_CLR_ROTATE_IN_AUTO_EOI_MODE 0
#define OCW2_OP_NON_SPECIFIC_EOI_CMD 1
#define OCW2_OP_NOOP 2
#define OCW2_OP_SPECIFIC_EOI_CMD 3
#define OCW2_OP_SET_ROTATE_IN_AUTO_EOI_MODE 4
#define OCW2_OP_ROTATE_ON_NON_SPEC_EOI_CMD 5
#define OCW2_OP_SET_PRIORITY_CMD 6
#define OCW2_OP_ROTATE_ON_SPEC_EOI_CMD 7
#define PIC_OCW3 0x00 /* Operational Control Word 3 (r/w) */
#define OCW3_SMM (1U << 6) /* special mask mode */
#define OCW3_ESMM (1U << 5) /* enable special mask mode */
#define OCW3_SSMM (1U << 6) /* set special mask mode */
#define OCW3_SMM (1U << 5) /* 1 = enable smm, 0 = disable */
#define OCW3_SELECT (1U << 3) /* select OCW3 */
#define OCW3_POLL (1U << 2) /* poll mode command */
#define OCW3_RR_CMD(x) ((x) << 0) /* register read command */
#define OCW3_RR (1U << 1) /* register read */
#define OCW3_RIS (1U << 0) /* 1 = read IS, 0 = read IR */
#define OCW3_RR_CMD_READ_IRQ 2
#define OCW3_RR_CMD_READ_IS 3
#define OCW3_POLL_IRQ(x) ((x) & 0x7f)
#define OCW3_POLL_PENDING (1U << 7)
#endif /* _DEV_IC_I8259REG_H_ */