sys/dev/ic/wdc_upc.c

   1 /* $NetBSD: wdc_upc.c,v 1.25 2008/03/18 20:46:36 cube Exp $ */
   2 /*-
   3  * Copyright (c) 2000 Ben Harris
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 /* This file is part of NetBSD/arm26 -- a port of NetBSD to ARM2/3 machines. */
  29
  30 #include <sys/cdefs.h>
  31 __KERNEL_RCSID(0, "$NetBSD: wdc_upc.c,v 1.25 2008/03/18 20:46:36 cube Exp $");
  32
  33 #include <sys/param.h>
  34 #include <sys/device.h>
  35 #include <sys/malloc.h>
  36 #include <sys/systm.h>
  37
  38 #include <sys/bus.h>
  39 #include <sys/intr.h>
  40
  41 #include <dev/ata/atavar.h> /* XXX needed by wdcvar.h */
  42
  43 #include <dev/ic/upcvar.h>
  44 #include <dev/ic/wdcreg.h>
  45 #include <dev/ic/wdcvar.h>
  46
  47 static int wdc_upc_match(device_t, cfdata_t, void *);
  48 static void wdc_upc_attach(device_t, device_t, void *);
  49
  50 struct wdc_upc_softc {
  51         struct wdc_softc sc_wdc;
  52         struct ata_channel *sc_chanlist[1];
  53         struct ata_channel sc_channel;
  54         struct ata_queue sc_chqueue;
  55         struct wdc_regs sc_wdc_regs;
  56 };
  57
  58 CFATTACH_DECL_NEW(wdc_upc, sizeof(struct wdc_upc_softc),
  59     wdc_upc_match, wdc_upc_attach, NULL, NULL);
  60
  61 static int
  62 wdc_upc_match(device_t parent, cfdata_t cf, void *aux)
  63 {
  64         struct upc_attach_args *ua = aux;
  65
  66         return !strcmp(ua->ua_devtype, "wdc");
  67 }
  68
  69 static void
  70 wdc_upc_attach(device_t parent, device_t self, void *aux)
  71 {
  72         struct wdc_upc_softc *sc = device_private(self);
  73         struct wdc_regs *wdr;
  74         struct upc_attach_args *ua = aux;
  75         int i;
  76
  77         sc->sc_wdc.sc_atac.atac_dev = self;
  78         sc->sc_wdc.regs = wdr = &sc->sc_wdc_regs;
  79
  80         sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16;
  81         sc->sc_wdc.sc_atac.atac_pio_cap = 1; /* XXX ??? */
  82         sc->sc_wdc.sc_atac.atac_nchannels = 1;
  83         sc->sc_chanlist[0] = &sc->sc_channel;
  84         sc->sc_wdc.sc_atac.atac_channels = sc->sc_chanlist;
  85         wdr->cmd_iot = ua->ua_iot;
  86         wdr->cmd_baseioh = ua->ua_ioh;
  87         wdr->ctl_iot = ua->ua_iot;
  88         wdr->ctl_ioh = ua->ua_ioh2;
  89         sc->sc_channel.ch_channel = 0;
  90         sc->sc_channel.ch_atac = &sc->sc_wdc.sc_atac;
  91         sc->sc_channel.ch_queue = &sc->sc_chqueue;
  92         sc->sc_channel.ch_ndrive = 2;
  93         for (i = 0; i < WDC_NREG; i++) {
  94                 if (bus_space_subregion(ua->ua_iot, ua->ua_ioh, i,
  95                     i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) {
  96                         aprint_error_dev(sc->sc_wdc.sc_atac.atac_dev,
  97                             "can't subregion I/O space\n");
  98                         return;
  99                 }
 100         }
 101         wdc_init_shadow_regs(&sc->sc_channel);
 102
 103         upc_intr_establish(ua->ua_irqhandle, IPL_BIO, wdcintr,
 104                            &sc->sc_channel);
 105
 106         aprint_normal("\n");
 107         aprint_naive("\n");
 108
 109         wdcattach(&sc->sc_channel);
 110 }