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wdc_obio.c revision 1.10 
      1 /*	$NetBSD: wdc_obio.c,v 1.10 2017/10/07 19:58:53 jdolecek 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.10 2017/10/07 19:58:53 jdolecek Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 #include <sys/malloc.h>
     39 
     40 #include <sys/bus.h>
     41 #include <machine/intr.h>
     42 
     43 #include <arm/xscale/i80321var.h>
     44 #include <evbarm/iq80321/iq80321reg.h>
     45 #include <evbarm/iq80321/obiovar.h>
     46 
     47 #include <evbarm/iq31244/iq31244reg.h>
     48 
     49 #include <dev/ic/wdcreg.h>
     50 #include <dev/ata/atavar.h>
     51 #include <dev/ic/wdcvar.h>
     52 
     53 struct wdc_obio_softc {
     54 	struct	wdc_softc sc_wdcdev;
     55 	struct	ata_channel *wdc_chanlist[1];
     56 	struct	ata_channel ata_channel;
     57 	struct	wdc_regs wdc_regs;
     58 	void	*sc_ih;
     59 };
     60 
     61 static int	wdc_obio_probe(device_t, cfdata_t, void *);
     62 static void	wdc_obio_attach(device_t, device_t, void *);
     63 
     64 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc),
     65     wdc_obio_probe, wdc_obio_attach, NULL, NULL);
     66 
     67 static int
     68 wdc_obio_probe(device_t parent, cfdata_t match, void *aux)
     69 {
     70 	return 1;
     71 }
     72 
     73 static void
     74 wdc_obio_attach(device_t parent, device_t self, void *aux)
     75 {
     76 	struct wdc_obio_softc *sc = device_private(self);
     77 	struct wdc_regs *wdr;
     78 	struct obio_attach_args *oba = aux;
     79 	int i;
     80 
     81 	sc->sc_wdcdev.sc_atac.atac_dev = self;
     82 	sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
     83 	wdr->cmd_iot = oba->oba_st;
     84 	wdr->ctl_iot = oba->oba_st;
     85 	if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE,
     86 	    0, &wdr->cmd_baseioh)) {
     87 		aprint_error(": couldn't map registers\n");
     88 		return;
     89 	}
     90 
     91 	for (i = 0; i < 8; i++) {
     92 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
     93 		    IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) {
     94 			aprint_error(": couldn't subregion registers\n");
     95 			return;
     96 		}
     97 	}
     98 
     99 	if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh,
    100 	    IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) {
    101 		aprint_error(": couldn't subregion registers\n");
    102 		return;
    103 	}
    104 
    105 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
    106 
    107 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
    108 	sc->wdc_chanlist[0] = &sc->ata_channel;
    109 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
    110 	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
    111 	sc->sc_wdcdev.wdc_maxdrives = 2;
    112 	sc->ata_channel.ch_channel = 0;
    113 	sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
    114 	sc->ata_channel.ch_queue = ata_queue_alloc(1);
    115 	wdc_init_shadow_regs(wdr);
    116 
    117 	aprint_normal("\n");
    118 
    119 	/*
    120 	 * The interrupt line is controlled by a jumper.  We can't detect
    121 	 * this, except by allowing a request to time out, so assume that
    122 	 * if the config file hasn't specified the IRQ, then the jumper isn't
    123 	 * fitted.
    124 	 */
    125 	if (oba->oba_irq != -1)
    126 		sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO,
    127 			wdcintr, &sc->ata_channel);
    128 	else {
    129 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
    130 		aprint_normal_dev(self, "Using polled I/O\n");
    131 	}
    132 
    133 	wdcattach(&sc->ata_channel);
    134 }
    135