176 lines
5.5 KiB
C
176 lines
5.5 KiB
C
/* $NetBSD: aha_mca.c,v 1.22 2009/09/22 13:22:53 tsutsui Exp $ */
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/*
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* Copyright (c) 2000-2002 The NetBSD Foundation, Inc.
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* Copyright (c) 1996-1999 Scott D. Telford.
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* Copyright (c) 1994, 1996 Charles M. Hannum. All rights reserved.
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* Portions:
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
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* 4. 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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* Originally written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*/
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/*
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* AHA-1640 MCA bus code by Scott Telford
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: aha_mca.c,v 1.22 2009/09/22 13:22:53 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/ahareg.h>
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#include <dev/ic/ahavar.h>
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#include <dev/mca/mcareg.h>
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#include <dev/mca/mcavar.h>
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#include <dev/mca/mcadevs.h>
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#define AHA_ISA_IOSIZE 4
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static int aha_mca_probe(device_t, cfdata_t, void *);
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static void aha_mca_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(aha_mca, sizeof(struct aha_softc),
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aha_mca_probe, aha_mca_attach, NULL, NULL);
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int
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aha_mca_probe(device_t parent, cfdata_t match, void *aux)
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{
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register struct mca_attach_args *ma = aux;
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if (ma->ma_id == MCA_PRODUCT_AHA1640)
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return (1);
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return (0);
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}
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void
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aha_mca_attach(device_t parent, device_t self, void *aux)
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{
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struct mca_attach_args *ma = aux;
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struct aha_softc *sc = device_private(self);
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bus_space_tag_t iot = ma->ma_iot;
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bus_space_handle_t ioh;
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struct aha_probe_data apd;
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mca_chipset_tag_t mc = ma->ma_mc;
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bus_addr_t iobase;
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sc->sc_dev =self;
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/*
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* POS registers differ much between 8003 and 8013, so they are
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* divided to two sections.
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*
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* POS register 2: (adf pos0)
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* 7 6 5 4 3 2 1 0
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* | 0 0 0 0 0 0 \__ enable: 0=adapter disabled, 1=adapter enabled
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* \_______________ Adapter BIOS location
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*
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* POS register 3: (adf pos1)
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* 7 6 5 4 3 2 1 0
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* \_/ \___/ \___/
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* | | \__ I/O Port Address (upper part)
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* | |__________ Adapter BIOS location
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* |_______________ I/O Port Address (lower part)
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*
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* POS register 4: (adf pos2)
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* 7 6 5 4 3 2 1 0
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* \___/ | | \___/
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* | | | \__ IRQ: XXX+8
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* | | |________ Sync xfer started by AHA-1640: 1=YES 2=NO
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* | |__________ SCSI Parity Checking On/Off
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* |______________ SCSI Address
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*
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* POS register 3: (adf pos3)
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* 7 6 5 4 3 2 1 0
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* | \_____/
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* | \__ Arbitration lvl (DMA channel)
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* |__________ Fairness On/Off
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*
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*/
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apd.sc_irq = (ma->ma_pos[4] & 0x7) + 8;
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apd.sc_drq = ma->ma_pos[5] & 0xf;
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apd.sc_scsi_dev = (ma->ma_pos[4] & 0xe0) >> 5;
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printf(" slot %d irq %d drq %d: Adaptec AHA-1640 SCSI Adapter\n",
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ma->ma_slot + 1,
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apd.sc_irq, apd.sc_drq);
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iobase = ((ma->ma_pos[3] & 0x03) << 8) + 0x30 +
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((ma->ma_pos[3] & 0x40) >> 4);
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if (bus_space_map(iot, iobase, AHA_ISA_IOSIZE, 0, &ioh)) {
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aprint_error_dev(self, "can't map i/o space\n");
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return;
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}
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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sc->sc_dmat = ma->ma_dmat;
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/*
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* AHA1640 is bus-mastering card, does not need any assistance
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* with DMA transfers by MCA DMA controller.
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*/
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sc->sc_ih = mca_intr_establish(mc, apd.sc_irq, IPL_BIO, aha_intr, sc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt\n");
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return;
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}
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aha_attach(sc, &apd);
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}
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