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75 lines
2.7 KiB
75 lines
2.7 KiB
20 years ago
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Definitions for the interrupt related bits in the I/O ASIC
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* interrupt status register (and the interrupt mask register, of course)
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*
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* Created with Information from:
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*
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* "DEC 3000 300/400/500/600/700/800/900 AXP Models System Programmer's Manual"
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*
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* and the Mach Sources
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*
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* Copyright (C) 199x the Anonymous
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* Copyright (C) 2002 Maciej W. Rozycki
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*/
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#ifndef __ASM_DEC_IOASIC_INTS_H
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#define __ASM_DEC_IOASIC_INTS_H
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/*
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* The upper 16 bits are a part of the I/O ASIC's internal DMA engine
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* and thus are common to all I/O ASIC machines. The exception is
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* the Maxine, which makes use of the FLOPPY and ISDN bits (otherwise
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* unused) and has a different SCC wiring.
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*/
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/* all systems */
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#define IO_INR_SCC0A_TXDMA 31 /* SCC0A transmit page end */
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#define IO_INR_SCC0A_TXERR 30 /* SCC0A transmit memory read error */
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#define IO_INR_SCC0A_RXDMA 29 /* SCC0A receive half page */
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#define IO_INR_SCC0A_RXERR 28 /* SCC0A receive overrun */
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#define IO_INR_ASC_DMA 19 /* ASC buffer pointer loaded */
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#define IO_INR_ASC_ERR 18 /* ASC page overrun */
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#define IO_INR_ASC_MERR 17 /* ASC memory read error */
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#define IO_INR_LANCE_MERR 16 /* LANCE memory read error */
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/* except Maxine */
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#define IO_INR_SCC1A_TXDMA 27 /* SCC1A transmit page end */
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#define IO_INR_SCC1A_TXERR 26 /* SCC1A transmit memory read error */
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#define IO_INR_SCC1A_RXDMA 25 /* SCC1A receive half page */
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#define IO_INR_SCC1A_RXERR 24 /* SCC1A receive overrun */
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#define IO_INR_RES_23 23 /* unused */
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#define IO_INR_RES_22 22 /* unused */
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#define IO_INR_RES_21 21 /* unused */
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#define IO_INR_RES_20 20 /* unused */
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/* Maxine */
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#define IO_INR_AB_TXDMA 27 /* ACCESS.bus transmit page end */
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#define IO_INR_AB_TXERR 26 /* ACCESS.bus xmit memory read error */
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#define IO_INR_AB_RXDMA 25 /* ACCESS.bus receive half page */
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#define IO_INR_AB_RXERR 24 /* ACCESS.bus receive overrun */
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#define IO_INR_FLOPPY_ERR 23 /* FDC error */
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#define IO_INR_ISDN_TXDMA 22 /* ISDN xmit buffer pointer loaded */
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#define IO_INR_ISDN_RXDMA 21 /* ISDN recv buffer pointer loaded */
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#define IO_INR_ISDN_ERR 20 /* ISDN memory read/overrun error */
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#define IO_INR_DMA 16 /* first DMA IRQ */
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/*
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* The lower 16 bits are system-specific and thus defined in
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* system-specific headers.
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*/
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#define IO_IRQ_BASE 8 /* first IRQ assigned to I/O ASIC */
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#define IO_IRQ_LINES 32 /* number of I/O ASIC interrupts */
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#define IO_IRQ_NR(n) ((n) + IO_IRQ_BASE)
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#define IO_IRQ_MASK(n) (1 << (n))
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#define IO_IRQ_ALL 0x0000ffff
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#define IO_IRQ_DMA 0xffff0000
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#endif /* __ASM_DEC_IOASIC_INTS_H */
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