sys/arch/evbarm/iq31244/wdc_obio.c

   1 /*      $NetBSD: wdc_obio.c,v 1.4 2008/03/18 20:46:35 cube 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 1.4 2008/03/18 20:46:35 cube 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 <machine/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  ata_queue wdc_chqueue;
  58         struct  wdc_regs wdc_regs;
  59         void    *sc_ih;
  60 };
  61
  62 static int      wdc_obio_probe(device_t, cfdata_t, void *);
  63 static void     wdc_obio_attach(device_t, device_t, void *);
  64
  65 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc),
  66     wdc_obio_probe, wdc_obio_attach, NULL, NULL);
  67
  68 static int
  69 wdc_obio_probe(device_t parent, cfdata_t match, void *aux)
  70 {
  71         return 1;
  72 }
  73
  74 static void
  75 wdc_obio_attach(device_t parent, device_t self, void *aux)
  76 {
  77         struct wdc_obio_softc *sc = device_private(self);
  78         struct wdc_regs *wdr;
  79         struct obio_attach_args *oba = aux;
  80         int i;
  81
  82         sc->sc_wdcdev.sc_atac.atac_dev = self;
  83         sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
  84         wdr->cmd_iot = oba->oba_st;
  85         wdr->ctl_iot = oba->oba_st;
  86         if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE,
  87             0, &wdr->cmd_baseioh)) {
  88                 aprint_error(": couldn't map registers\n");
  89                 return;
  90         }
  91
  92         for (i = 0; i < 8; i++) {
  93                 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
  94                     IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) {
  95                         aprint_error(": couldn't subregion registers\n");
  96                         return;
  97                 }
  98         }
  99
 100         if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh,
 101             IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) {
 102                 aprint_error(": couldn't subregion registers\n");
 103                 return;
 104         }
 105
 106         sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
 107
 108         sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
 109         sc->wdc_chanlist[0] = &sc->ata_channel;
 110         sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
 111         sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
 112         sc->ata_channel.ch_channel = 0;
 113         sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
 114         sc->ata_channel.ch_queue = &sc->wdc_chqueue;
 115         sc->ata_channel.ch_ndrive = 2;
 116         wdc_init_shadow_regs(&sc->ata_channel);
 117
 118         aprint_normal("\n");
 119
 120         /*
 121          * The interrupt line is controlled by a jumper.  We can't detect
 122          * this, except by allowing a request to time out, so assume that
 123          * if the config file hasn't specified the IRQ, then the jumper isn't
 124          * fitted.
 125          */
 126         if (oba->oba_irq != -1)
 127                 sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO,
 128                         wdcintr, &sc->ata_channel);
 129         else {
 130                 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
 131                 aprint_normal_dev(self, "Using polled I/O\n");
 132         }
 133
 134         wdcattach(&sc->ata_channel);
 135 }