560 lines
17 KiB
C
560 lines
17 KiB
C
/* $NetBSD: ahc_isa.c,v 1.13 2000/03/15 02:05:19 fvdl Exp $ */
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/*
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* Product specific probe and attach routines for:
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* AHA-284X VL-bus SCSI controllers
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*
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* Copyright (c) 1994, 1995, 1996, 1997, 1998 Justin T. Gibbs.
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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 immediately at the beginning of the file, without modification,
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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD: src/sys/dev/aic7xxx/ahc_eisa.c,v 1.15 2000/01/29 14:22:19 peter Exp $
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*/
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1995, 1996 Christopher G. Demetriou
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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. 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 Christopher G. Demetriou
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* for the NetBSD Project.
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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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* This front-end driver is really sort of a hack. The AHA-284X likes
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* to masquerade as an EISA device. However, on VLbus machines with
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* no EISA signature in the BIOS, the EISA bus will never be scanned.
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* This is intended to catch the 284X controllers on those systems
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* by looking in "EISA i/o space" for 284X controllers.
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*
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* This relies heavily on i/o port accounting. We also just use the
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* EISA macros for everything ... it's a real waste to redefine them.
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*
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* Note: there isn't any #ifdef for FreeBSD in this file, since the
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* FreeBSD EISA driver handles all cases of the 284X.
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*
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* -- Jason R. Thorpe <thorpej@NetBSD.ORG>
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* July 12, 1996
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <machine/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/eisa/eisareg.h>
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#include <dev/eisa/eisavar.h>
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#include <dev/eisa/eisadevs.h>
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#include <dev/microcode/aic7xxx/aic7xxx_reg.h>
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#include <dev/ic/aic7xxxvar.h>
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#include <dev/ic/aic77xxreg.h>
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#include <dev/ic/aic77xxvar.h>
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#include <dev/ic/smc93cx6var.h>
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/*
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* Under normal circumstances, these messages are unnecessary
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* and not terribly cosmetic.
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*/
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#ifdef DEBUG
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#define bootverbose 1
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#else
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#define bootverbose 1
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#endif
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/* IO port address setting range as EISA slot number */
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#define AHC_ISA_MIN_SLOT 0x1 /* from iobase = 0x1c00 */
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#define AHC_ISA_MAX_SLOT 0xe /* to iobase = 0xec00 */
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#define AHC_ISA_SLOT_OFFSET AHC_EISA_SLOT_OFFSET
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#define AHC_ISA_IOSIZE AHC_EISA_IOSIZE
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/*
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* I/O port offsets
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*/
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#define AHC_ISA_VID (EISA_SLOTOFF_VID - AHC_ISA_SLOT_OFFSET)
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#define AHC_ISA_PID (EISA_SLOTOFF_PID - AHC_ISA_SLOT_OFFSET)
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#define AHC_ISA_PRIMING AHC_ISA_VID /* enable vendor/product ID */
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/*
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* AHC_ISA_PRIMING register values (write)
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*/
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#define AHC_ISA_PRIMING_VID(index) (AHC_ISA_VID + (index))
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#define AHC_ISA_PRIMING_PID(index) (AHC_ISA_PID + (index))
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int ahc_isa_idstring __P((bus_space_tag_t, bus_space_handle_t, char *));
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int ahc_isa_match __P((struct isa_attach_args *, bus_addr_t));
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int ahc_isa_probe __P((struct device *, struct cfdata *, void *));
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void ahc_isa_attach __P((struct device *, struct device *, void *));
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void aha2840_load_seeprom __P((struct ahc_softc *ahc));
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struct cfattach ahc_isa_ca = {
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sizeof(struct ahc_softc), ahc_isa_probe, ahc_isa_attach
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};
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/*
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* This keeps track of which slots are to be checked next if the
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* iobase locator is a wildcard. A simple static variable isn't enough,
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* since it's conceivable that a system might have more than one ISA
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* bus.
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*
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* The "bus" member is the unit number of the parent ISA bus, e.g. "0"
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* for "isa0".
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*/
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struct ahc_isa_slot {
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LIST_ENTRY(ahc_isa_slot) link;
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int bus;
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int slot;
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};
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static LIST_HEAD(, ahc_isa_slot) ahc_isa_all_slots;
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static int ahc_isa_slot_initialized;
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int
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ahc_isa_idstring(iot, ioh, idstring)
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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char *idstring;
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{
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u_int8_t vid[EISA_NVIDREGS], pid[EISA_NPIDREGS];
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int i;
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/* Get the vendor ID bytes */
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for (i = 0; i < EISA_NVIDREGS; i++) {
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bus_space_write_1(iot, ioh, AHC_ISA_PRIMING,
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AHC_ISA_PRIMING_VID(i));
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vid[i] = bus_space_read_1(iot, ioh, AHC_ISA_VID + i);
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}
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/* Check for device existence */
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if (EISA_VENDID_NODEV(vid)) {
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#if 0
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printf("ahc_isa_idstring: no device at 0x%lx\n",
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ioh); /* XXX knows about ioh guts */
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printf("\t(0x%x, 0x%x)\n", vid[0], vid[1]);
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#endif
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return (0);
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}
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/* And check that the firmware didn't biff something badly */
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if (EISA_VENDID_IDDELAY(vid)) {
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printf("ahc_isa_idstring: BIOS biffed it at 0x%lx\n",
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ioh); /* XXX knows about ioh guts */
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return (0);
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}
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/* Get the product ID bytes */
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for (i = 0; i < EISA_NPIDREGS; i++) {
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bus_space_write_1(iot, ioh, AHC_ISA_PRIMING,
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AHC_ISA_PRIMING_PID(i));
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pid[i] = bus_space_read_1(iot, ioh, AHC_ISA_PID + i);
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}
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/* Create the ID string from the vendor and product IDs */
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idstring[0] = EISA_VENDID_0(vid);
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idstring[1] = EISA_VENDID_1(vid);
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idstring[2] = EISA_VENDID_2(vid);
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idstring[3] = EISA_PRODID_0(pid);
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idstring[4] = EISA_PRODID_1(pid);
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idstring[5] = EISA_PRODID_2(pid);
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idstring[6] = EISA_PRODID_3(pid);
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idstring[7] = '\0'; /* sanity */
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return (1);
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}
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int
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ahc_isa_match(ia, iobase)
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struct isa_attach_args *ia;
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bus_addr_t iobase;
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{
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int irq;
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char idstring[EISA_IDSTRINGLEN];
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/*
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* Get a mapping for the while slot-specific address
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* space. If we can't, assume nothing's there, but
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* warn about it.
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*/
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if (bus_space_map(iot, iobase, AHC_ISA_IOSIZE, 0, &ioh)) {
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#if 0
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/*
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* Don't print anything out here, since this could
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* be common on machines configured to look for
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* ahc_eisa and ahc_isa.
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*/
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printf("ahc_isa_match: can't map I/O space for 0x%x\n",
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iobase);
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#endif
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return (0);
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}
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if (!ahc_isa_idstring(iot, ioh, idstring))
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irq = -1; /* cannot get the ID string */
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else if (strcmp(idstring, "ADP7756") &&
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strcmp(idstring, "ADP7757"))
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irq = -1; /* unknown ID strings */
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else
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irq = ahc_aic77xx_irq(iot, ioh);
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bus_space_unmap(iot, ioh, AHC_ISA_IOSIZE);
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if (irq < 0)
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return (0);
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if (ia->ia_irq != IRQUNK &&
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ia->ia_irq != irq) {
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printf("ahc_isa_match: irq mismatch (kernel %d, card %d)\n",
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ia->ia_irq, irq);
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return (0);
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}
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/* We have a match */
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ia->ia_iobase = iobase;
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ia->ia_irq = irq;
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ia->ia_iosize = AHC_ISA_IOSIZE;
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ia->ia_msize = 0;
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return (1);
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}
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/*
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* Check the slots looking for a board we recognise
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* If we find one, note it's address (slot) and call
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* the actual probe routine to check it out.
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*/
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int
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ahc_isa_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct isa_attach_args *ia = aux;
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struct ahc_isa_slot *as;
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if (ahc_isa_slot_initialized == 0) {
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LIST_INIT(&ahc_isa_all_slots);
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ahc_isa_slot_initialized = 1;
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}
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if (ia->ia_iobase != IOBASEUNK)
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return (ahc_isa_match(ia, ia->ia_iobase));
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/*
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* Find this bus's state. If we don't yet have a slot
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* marker, allocate and initialize one.
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*/
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for (as = ahc_isa_all_slots.lh_first; as != NULL;
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as = as->link.le_next)
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if (as->bus == parent->dv_unit)
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goto found_slot_marker;
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/*
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* Don't have one, so make one.
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*/
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as = (struct ahc_isa_slot *)
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malloc(sizeof(struct ahc_isa_slot), M_DEVBUF, M_NOWAIT);
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if (as == NULL)
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panic("ahc_isa_probe: can't allocate slot marker");
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as->bus = parent->dv_unit;
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as->slot = AHC_ISA_MIN_SLOT;
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LIST_INSERT_HEAD(&ahc_isa_all_slots, as, link);
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found_slot_marker:
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for (; as->slot <= AHC_ISA_MAX_SLOT; as->slot++) {
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if (ahc_isa_match(ia, EISA_SLOT_ADDR(as->slot) +
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AHC_ISA_SLOT_OFFSET)) {
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as->slot++; /* next slot to search */
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return (1);
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}
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}
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/* No matching cards were found. */
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return (0);
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}
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void
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ahc_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct ahc_softc *ahc = (void *)self;
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int irq, intrtype;
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const char *intrtypestr;
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char idstring[EISA_IDSTRINGLEN];
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if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
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printf(": can't map i/o space\n");
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return;
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}
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if (!ahc_isa_idstring(iot, ioh, idstring)) {
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printf(": can't read ID string\n");
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goto free_io;
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}
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if ((irq = ahc_aic77xx_irq(iot, ioh)) < 0) {
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printf(": ahc_aic77xx_irq failed\n");
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goto free_io;
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}
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if (strcmp(idstring, "ADP7756") == 0) {
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printf(": %s\n", EISA_PRODUCT_ADP7756);
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} else if (strcmp(idstring, "ADP7757") == 0) {
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printf(": %s\n", EISA_PRODUCT_ADP7757);
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} else {
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printf(": unknown device type %s\n", idstring);
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goto free_io;
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}
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if (ahc_alloc(ahc, ioh, iot, ia->ia_dmat,
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AHC_AIC7770|AHC_VL, AHC_AIC7770_FE, AHC_FNONE))
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goto free_io;
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/*
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* Tell the bus-dma interface that we can do 32bit dma
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* NOTE: this variable is first referenced in ahc_init().
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*/
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ahc->sc_dmaflags = ISABUS_DMA_32BIT;
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ahc->channel = 'A';
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ahc->channel_b = 'B';
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if (ahc_reset(ahc) != 0)
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goto free_ahc;
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/*
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* The IRQMS bit enables level sensitive interrupts. Only allow
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* IRQ sharing if it's set.
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* NOTE: ahc->pause is initialized in ahc_alloc().
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*/
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if (ahc->pause & IRQMS) {
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intrtype = IST_LEVEL;
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intrtypestr = "level sensitive";
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} else {
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intrtype = IST_EDGE;
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intrtypestr = "edge triggered";
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}
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ahc->ih = isa_intr_establish(ia->ia_ic, irq,
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intrtype, IPL_BIO, ahc_intr, ahc);
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if (ahc->ih == NULL) {
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printf("%s: couldn't establish %s interrupt\n",
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ahc->sc_dev.dv_xname, intrtypestr);
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goto free_ahc;
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}
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/*
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* Tell the user what type of interrupts we're using.
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* usefull for debugging irq problems
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*/
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if (bootverbose) {
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printf("%s: Using %s interrupts\n",
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ahc->sc_dev.dv_xname, intrtypestr);
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}
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/*
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* Now that we know we own the resources we need, do the
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* card initialization.
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*/
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aha2840_load_seeprom(ahc);
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/* Attach sub-devices */
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if (ahc_aic77xx_attach(ahc) == 0)
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return; /* succeed */
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/* failed */
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isa_intr_disestablish(ia->ia_ic, ahc->ih);
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free_ahc:
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ahc_free(ahc);
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free_io:
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bus_space_unmap(iot, ioh, ia->ia_iosize);
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}
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/*
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* Read the 284x SEEPROM.
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*/
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void
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aha2840_load_seeprom(struct ahc_softc *ahc)
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{
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struct seeprom_descriptor sd;
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struct seeprom_config sc;
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u_int16_t checksum = 0;
|
|
u_int8_t scsi_conf;
|
|
int have_seeprom;
|
|
|
|
sd.sd_tag = ahc->tag;
|
|
sd.sd_bsh = ahc->bsh;
|
|
sd.sd_control_offset = SEECTL_2840;
|
|
sd.sd_status_offset = STATUS_2840;
|
|
sd.sd_dataout_offset = STATUS_2840;
|
|
sd.sd_chip = C46;
|
|
sd.sd_MS = 0;
|
|
sd.sd_RDY = EEPROM_TF;
|
|
sd.sd_CS = CS_2840;
|
|
sd.sd_CK = CK_2840;
|
|
sd.sd_DO = DO_2840;
|
|
sd.sd_DI = DI_2840;
|
|
|
|
if (bootverbose)
|
|
printf("%s: Reading SEEPROM...", ahc_name(ahc));
|
|
have_seeprom = read_seeprom(&sd,
|
|
(u_int16_t *)&sc,
|
|
/*start_addr*/0,
|
|
sizeof(sc)/2);
|
|
|
|
if (have_seeprom) {
|
|
/* Check checksum */
|
|
int i;
|
|
int maxaddr = (sizeof(sc)/2) - 1;
|
|
u_int16_t *scarray = (u_int16_t *)≻
|
|
|
|
for (i = 0; i < maxaddr; i++)
|
|
checksum = checksum + scarray[i];
|
|
if (checksum != sc.checksum) {
|
|
if(bootverbose)
|
|
printf ("checksum error\n");
|
|
have_seeprom = 0;
|
|
} else if (bootverbose) {
|
|
printf("done.\n");
|
|
}
|
|
}
|
|
|
|
if (!have_seeprom) {
|
|
if (bootverbose)
|
|
printf("%s: No SEEPROM available\n", ahc_name(ahc));
|
|
ahc->flags |= AHC_USEDEFAULTS;
|
|
} else {
|
|
/*
|
|
* Put the data we've collected down into SRAM
|
|
* where ahc_init will find it.
|
|
*/
|
|
int i;
|
|
int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
|
|
u_int16_t discenable;
|
|
|
|
discenable = 0;
|
|
for (i = 0; i < max_targ; i++){
|
|
u_int8_t target_settings;
|
|
target_settings = (sc.device_flags[i] & CFXFER) << 4;
|
|
if (sc.device_flags[i] & CFSYNCH)
|
|
target_settings |= SOFS;
|
|
if (sc.device_flags[i] & CFWIDEB)
|
|
target_settings |= WIDEXFER;
|
|
if (sc.device_flags[i] & CFDISC)
|
|
discenable |= (0x01 << i);
|
|
ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
|
|
}
|
|
ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
|
|
ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
|
|
|
|
ahc->our_id = sc.brtime_id & CFSCSIID;
|
|
|
|
scsi_conf = (ahc->our_id & 0x7);
|
|
if (sc.adapter_control & CFSPARITY)
|
|
scsi_conf |= ENSPCHK;
|
|
if (sc.adapter_control & CFRESETB)
|
|
scsi_conf |= RESET_SCSI;
|
|
|
|
if (sc.bios_control & CF284XEXTEND)
|
|
ahc->flags |= AHC_EXTENDED_TRANS_A;
|
|
/* Set SCSICONF info */
|
|
ahc_outb(ahc, SCSICONF, scsi_conf);
|
|
|
|
if (sc.adapter_control & CF284XSTERM)
|
|
ahc->flags |= AHC_TERM_ENB_A;
|
|
}
|
|
}
|