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wdc_obio.c revision 1.1 
      1 /*	$NetBSD: wdc_obio.c,v 1.1 2005/02/19 16:56:04 rearnsha Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998, 2003, 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum and by Onno van der Linden.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.1 2005/02/19 16:56:04 rearnsha Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/device.h>
     45 #include <sys/malloc.h>
     46 
     47 #include <machine/bus.h>
     48 #include <machine/intr.h>
     49 
     50 #include <arm/xscale/i80321var.h>
     51 #include <evbarm/iq80321/iq80321reg.h>
     52 #include <evbarm/iq80321/obiovar.h>
     53 
     54 #include <evbarm/iq31244/iq31244reg.h>
     55 
     56 #include <dev/ic/wdcreg.h>
     57 #include <dev/ata/atavar.h>
     58 #include <dev/ic/wdcvar.h>
     59 
     60 struct wdc_obio_softc {
     61 	struct	wdc_softc sc_wdcdev;
     62 	struct	ata_channel *wdc_chanlist[1];
     63 	struct	ata_channel ata_channel;
     64 	struct	ata_queue wdc_chqueue;
     65 	struct	wdc_regs wdc_regs;
     66 	void	*sc_ih;
     67 };
     68 
     69 static int	wdc_obio_probe(struct device *, struct cfdata *, void *);
     70 static void	wdc_obio_attach(struct device *, struct device *, void *);
     71 
     72 CFATTACH_DECL(wdc_obio, sizeof(struct wdc_obio_softc),
     73     wdc_obio_probe, wdc_obio_attach, NULL, NULL);
     74 
     75 static int
     76 wdc_obio_probe(struct device *parent, struct cfdata *match, void *aux)
     77 {
     78 	return 1;
     79 }
     80 
     81 static void
     82 wdc_obio_attach(struct device *parent, struct device *self, void *aux)
     83 {
     84 	struct wdc_obio_softc *sc = (void *)self;
     85 	struct wdc_regs *wdr;
     86 	struct obio_attach_args *oba = aux;
     87 	int i;
     88 
     89 	sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
     90 	wdr->cmd_iot = oba->oba_st;
     91 	wdr->ctl_iot = oba->oba_st;
     92 	if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE,
     93 	    0, &wdr->cmd_baseioh)) {
     94 		printf(": couldn't map registers\n");
     95 		return;
     96 	}
     97 
     98 	for (i = 0; i < 8; i++) {
     99 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
    100 		    IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) {
    101 			printf(": couldn't subregion registers\n");
    102 			return;
    103 		}
    104 	}
    105 
    106 	if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh,
    107 	    IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) {
    108 		printf(": couldn't subregion registers\n");
    109 		return;
    110 	}
    111 
    112 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
    113 
    114 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
    115 	sc->wdc_chanlist[0] = &sc->ata_channel;
    116 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
    117 	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
    118 	sc->ata_channel.ch_channel = 0;
    119 	sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
    120 	sc->ata_channel.ch_queue = &sc->wdc_chqueue;
    121 	wdc_init_shadow_regs(&sc->ata_channel);
    122 
    123 	printf("\n");
    124 
    125 	/*
    126 	 * The interrupt line is controlled by a jumper.  We can't detect
    127 	 * this, except by allowing a request to time out, so assume that
    128 	 * if the config file hasn't specified the IRQ, then the jumper isn't
    129 	 * fitted.
    130 	 */
    131 	if (oba->oba_irq != -1)
    132 		sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO,
    133 			wdcintr, &sc->ata_channel);
    134 	else {
    135 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
    136 		printf("%s: Using polled I/O\n",
    137 			sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    138 	}
    139 
    140 	wdcattach(&sc->ata_channel);
    141 }
    142