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dpt_eisa.c revision 1.1 
      1 /*	$NetBSD: dpt_eisa.c,v 1.1 1999/09/29 20:38:51 ad Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 Andy Doran <ad (at) NetBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  */
     29 
     30 /*
     31  * EISA front-end for DPT EATA SCSI driver.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: dpt_eisa.c,v 1.1 1999/09/29 20:38:51 ad Exp $");
     36 
     37 #include <sys/types.h>
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/device.h>
     41 
     42 #include <machine/bus.h>
     43 #include <machine/intr.h>
     44 
     45 #include <dev/scsipi/scsi_all.h>
     46 #include <dev/scsipi/scsipi_all.h>
     47 #include <dev/scsipi/scsiconf.h>
     48 
     49 #include <dev/eisa/eisavar.h>
     50 #include <dev/eisa/eisadevs.h>
     51 
     52 #include <dev/ic/dptreg.h>
     53 #include <dev/ic/dptvar.h>
     54 
     55 #define DPT_EISA_SLOT_OFFSET		0x0c00
     56 #define DPT_EISA_IOSIZE			0x0100
     57 #define DPT_EISA_IOCONF			0x90
     58 #define DPT_EISA_EATA_REG_OFFSET	0x88
     59 
     60 int	dpt_eisa_irq __P((bus_space_tag_t, bus_space_handle_t, int *));
     61 int	dpt_eisa_match __P((struct device *, struct cfdata *, void *));
     62 void	dpt_eisa_attach __P((struct device *, struct device *, void *));
     63 
     64 struct cfattach dpt_eisa_ca = {
     65 	sizeof(struct dpt_softc), dpt_eisa_match, dpt_eisa_attach
     66 };
     67 
     68 const char *dpt_eisa_boards[] = {
     69 	"DPT2402",
     70 	"DPTA401",
     71 	"DPTA402",
     72 	"DPTA410",
     73 	"DPTA411",
     74 	"DPTA412",
     75 	"DPTA420",
     76 	"DPTA501",
     77 	"DPTA502",
     78 	"DPTA701",
     79 	"DPTBC01",
     80 	"NEC8200",	/* OEM */
     81 	"ATT2408",	/* OEM */
     82 	NULL
     83 };
     84 
     85 int
     86 dpt_eisa_irq(iot, ioh, irq)
     87 	bus_space_tag_t iot;
     88 	bus_space_handle_t ioh;
     89 	int *irq;
     90 {
     91 
     92 	switch (bus_space_read_1(iot, ioh, DPT_EISA_IOCONF) & 0x38) {
     93 	case 0x08:
     94 		*irq = 11;
     95 		break;
     96 	case 0x10:
     97 		*irq = 15;
     98 		break;
     99 	case 0x20:
    100 		*irq = 14;
    101 		break;
    102 	default:
    103 		return (-1);
    104 	}
    105 
    106 	return (0);
    107 }
    108 
    109 int
    110 dpt_eisa_match(parent, match, aux)
    111 	struct device *parent;
    112 	struct cfdata *match;
    113 	void *aux;
    114 {
    115 	struct eisa_attach_args *ea;
    116 	int i;
    117 
    118 	ea = aux;
    119 
    120 	for (i = 0; dpt_eisa_boards[i] != NULL; i++)
    121 		if (strcmp(ea->ea_idstring, dpt_eisa_boards[i]) == 0)
    122 			break;
    123 
    124 	return (dpt_eisa_boards[i] != NULL);
    125 }
    126 
    127 void
    128 dpt_eisa_attach(parent, self, aux)
    129 	struct device *parent, *self;
    130 	void *aux;
    131 {
    132 	struct eisa_attach_args *ea;
    133 	bus_space_handle_t ioh;
    134 	eisa_chipset_tag_t ec;
    135 	eisa_intr_handle_t ih;
    136 	struct dpt_softc *sc;
    137 	bus_space_tag_t iot;
    138 	const char *intrstr;
    139 	int irq;
    140 
    141 	ea = aux;
    142 	sc = (struct dpt_softc *)self;
    143 	iot = ea->ea_iot;
    144 	ec = ea->ea_ec;
    145 
    146 	printf(": ");
    147 
    148 	if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
    149 	    DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh))
    150 		panic("can't map i/o space");
    151 
    152 	sc->sc_iot = iot;
    153 	sc->sc_ioh = ioh;
    154 	sc->sc_dmat = ea->ea_dmat;
    155 
    156 	/* Map and establish the interrupt. */
    157 	if (dpt_eisa_irq(iot, ioh, &irq))
    158 		panic("HBA on invalid IRQ");
    159 
    160 	if (eisa_intr_map(ec, irq, &ih)) {
    161 		printf("can't map interrupt (%d)\n", irq);
    162 		return;
    163 	}
    164 
    165 	intrstr = eisa_intr_string(ec, ih);
    166 	sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
    167 	    dpt_intr, sc);
    168 	if (sc->sc_ih == NULL) {
    169 		printf("can't establish interrupt");
    170 		if (intrstr != NULL)
    171 			printf(" at %s", intrstr);
    172 		printf("\n");
    173 		return;
    174 	}
    175 
    176 	/* Read the EATA configuration */
    177 	if (dpt_readcfg(sc)) {
    178 		printf("%s: readcfg failed - see dpt(4)\n",
    179 		    sc->sc_dv.dv_xname);
    180 		return;
    181 	}
    182 
    183 	/* Now attach to the bus-independant code */
    184 	dpt_init(sc, intrstr);
    185 }
    186