126 lines
5.1 KiB
C
126 lines
5.1 KiB
C
/* $NetBSD: psc.h,v 1.4 1999/06/28 01:41:13 briggs Exp $ */
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/*-
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* Copyright (c) 1997 David Huang <khym@bga.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* Some register definitions for the PSC, present only on the
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* Centris/Quadra 660av and the Quadra 840av.
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*/
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extern volatile u_int8_t *PSCBase;
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#define psc_reg1(r) (*((volatile u_int8_t *)(PSCBase+r)))
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#define psc_reg2(r) (*((volatile u_int16_t *)(PSCBase+r)))
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#define psc_reg4(r) (*((volatile u_int32_t *)(PSCBase+r)))
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void psc_init __P((void));
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int add_psc_lev3_intr __P((void (*)(void *), void *));
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int add_psc_lev4_intr __P((int, int (*)(void *), void *));
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int add_psc_lev5_intr __P((int, void (*)(void *), void *));
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int add_psc_lev6_intr __P((int, void (*)(void *), void *));
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int remove_psc_lev3_intr __P((void));
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int remove_psc_lev4_intr __P((int));
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int remove_psc_lev5_intr __P((int));
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int remove_psc_lev6_intr __P((int));
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/*
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* Reading an interrupt status register returns a mask of the
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* currently interrupting devices (one bit per device). Reading an
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* interrupt enable register returns a mask of the currently enabled
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* devices. Writing an interrupt enable register with the MSB set
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* enables the interrupts in the lower 4 bits, while writing with the
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* MSB clear disables the corresponding interrupts.
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* e.g. write 0x81 to enable device 0, write 0x86 to enable devices 1
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* and 2, write 0x02 to disable device 1.
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*
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* Level 3 device 0 is MACE
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* Level 4 device 0 is 3210 DSP?
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* Level 4 device 1 is SCC channel A (modem port)
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* Level 4 device 2 is SCC channel B (printer port)
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* Level 4 device 3 is MACE DMA completion
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* Level 5 device 0 is 3210 DSP?
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* Level 5 device 1 is 3210 DSP?
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* Level 6 device 0 is ?
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* Level 6 device 1 is ?
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* Level 6 device 2 is ?
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*/
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/* PSC interrupt registers */
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#define PSC_ISR_BASE 0x100 /* ISR is BASE + 0x10 * level */
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#define PSC_IER_BASE 0x104 /* IER is BASE + 0x10 * level */
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#define PSC_LEV3_ISR 0x130 /* level 3 interrupt status register */
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#define PSC_LEV3_IER 0x134 /* level 3 interrupt enable register */
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#define PSCINTR_ENET 0 /* Ethernet interrupt */
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#define PSC_LEV4_ISR 0x140 /* level 4 interrupt status register */
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#define PSC_LEV4_IER 0x144 /* level 4 interrupt enable register */
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#define PSCINTR_SCCA 1 /* SCC channel A interrupt */
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#define PSCINTR_SCCB 2 /* SCC channel B interrupt */
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#define PSCINTR_ENET_DMA 3 /* Ethernet DMA completion interrupt */
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#define PSC_LEV5_ISR 0x150 /* level 5 interrupt status register */
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#define PSC_LEV5_IER 0x154 /* level 5 interrupt enable register */
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#define PSC_LEV6_ISR 0x160 /* level 6 interrupt status register */
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#define PSC_LEV6_IER 0x164 /* level 6 interrupt enable register */
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/* PSC DMA channel control registers */
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#define PSC_CTLBASE 0xc00
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#define PSC_SCSI_CTL 0xc00 /* SCSI control/status */
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#define PSC_ENETRD_CTL 0xc10 /* MACE receive DMA channel control/status */
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#define PSC_ENETWR_CTL 0xc20 /* MACE transmit DMA channel control/status */
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#define PSC_FDC_CTL 0xc30 /* Floppy disk */
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#define PSC_SCCA_CTL 0xc40 /* SCC channel A */
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#define PSC_SCCB_CTL 0xc50 /* SCC channel B */
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#define PSC_SCCATX_CTL 0xc60 /* SCC channel A transmit */
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/* PSC DMA channels */
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#define PSC_ADDRBASE 0x1000
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#define PSC_LENBASE 0x1004
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#define PSC_CMDBASE 0x1008
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#define PSC_SCSI_ADDR 0x1000 /* SCSI DMA address register */
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#define PSC_SCSI_LEN 0x1004 /* SCSI DMA buffer count */
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#define PSC_SCSI_CMD 0x1008 /* SCSI DMA command register */
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#define PSC_ENETRD_ADDR 0x1020 /* MACE receive DMA address register */
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#define PSC_ENETRD_LEN 0x1024 /* MACE receive DMA buffer count */
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#define PSC_ENETRD_CMD 0x1028 /* MACE receive DMA command register */
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#define PSC_ENETWR_ADDR 0x1040 /* MACE transmit DMA address register */
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#define PSC_ENETWR_LEN 0x1044 /* MACE transmit DMA length */
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#define PSC_ENETWR_CMD 0x1048 /* MACE transmit DMA command register */
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/*
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* PSC DMA channels are controlled by two sets of registers (see p.29
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* of the Quadra 840av and Centris 660av Developer Note). Add the
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* following offsets to get the desired register set.
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*/
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#define PSC_SET0 0x00
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#define PSC_SET1 0x10
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