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wdc_ts.c revision 1.6 
      1 /*	$NetBSD: wdc_ts.c,v 1.6 2011/07/01 19:11:34 dyoung Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998, 2003 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_ts.c,v 1.6 2011/07/01 19:11:34 dyoung 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/ep93xx/ep93xxvar.h>
     44 
     45 #include <dev/ic/wdcreg.h>
     46 #include <dev/ata/atavar.h>
     47 #include <dev/ic/wdcvar.h>
     48 #include <evbarm/tsarm/tspldvar.h>
     49 
     50 struct wdc_ts_softc {
     51 	struct	wdc_softc sc_wdcdev;
     52 	struct	ata_channel *wdc_chanlist[1];
     53 	struct	ata_channel ata_channel;
     54 	struct	ata_queue wdc_chqueue;
     55 	struct	wdc_regs wdc_regs;
     56 	void	*sc_ih;
     57 };
     58 
     59 static int	wdc_ts_probe(device_t, cfdata_t, void *);
     60 static void	wdc_ts_attach(device_t, device_t, void *);
     61 
     62 CFATTACH_DECL_NEW(wdc_ts, sizeof(struct wdc_ts_softc),
     63     wdc_ts_probe, wdc_ts_attach, NULL, NULL);
     64 
     65 static int
     66 wdc_ts_probe(device_t parent, cfdata_t match, void *aux)
     67 {
     68 	return 1;
     69 }
     70 
     71 static void
     72 wdc_ts_attach(device_t parent, device_t self, void *aux)
     73 {
     74 	struct wdc_ts_softc *sc = device_private(self);
     75 	struct wdc_regs *wdr;
     76 	struct tspld_attach_args *ta = aux;
     77 	int i;
     78 
     79 	sc->sc_wdcdev.sc_atac.atac_dev = self;
     80 	sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
     81 	wdr->cmd_iot = ta->ta_iot;
     82 	wdr->ctl_iot = ta->ta_iot;
     83 	if (bus_space_map(wdr->cmd_iot, 0x11000000, 8, 0, &wdr->cmd_baseioh) ||
     84 	    bus_space_map(wdr->ctl_iot, 0x10400006, 1, 0, &wdr->ctl_ioh)) {
     85 		aprint_error(": couldn't map registers\n");
     86 		return;
     87 	}
     88 
     89 	for (i = 0; i < 8; i++) {
     90 		if (bus_space_subregion(wdr->cmd_iot,
     91 		      wdr->cmd_baseioh, i, 1, &wdr->cmd_iohs[i]) != 0) {
     92 			aprint_error(": couldn't subregion registers\n");
     93 			return;
     94 		}
     95 	}
     96 
     97 
     98 	if (bus_space_map(wdr->cmd_iot, 0x21000000, 2, 0, &wdr->cmd_iohs[0])) {
     99 		aprint_error(": couldn't map registers\n");
    100 		return;
    101 	}
    102 
    103 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_PREATA;
    104 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
    105 
    106 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
    107 	sc->wdc_chanlist[0] = &sc->ata_channel;
    108 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
    109 	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
    110 	sc->ata_channel.ch_channel = 0;
    111 	sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
    112 	sc->ata_channel.ch_queue = &sc->wdc_chqueue;
    113 	sc->ata_channel.ch_ndrive = 2;
    114 	wdc_init_shadow_regs(&sc->ata_channel);
    115 
    116 	aprint_normal("\n");
    117 
    118 	sc->sc_ih = ep93xx_intr_establish(32, IPL_BIO, wdcintr, &sc->ata_channel);
    119 
    120 	wdcattach(&sc->ata_channel);
    121 }
    122