Home | History | Annotate | Line # | Download | only in podulebus
dtide.c revision 1.3 
      1 /* $NetBSD: dtide.c,v 1.3 2001/11/13 07:23:15 lukem Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 Ben Harris
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 /* This file is part of NetBSD/arm26 -- a port of NetBSD to ARM2/3 machines. */
     30 /*
     31  * dtide.c - Driver for the D.T. Software IDE interface.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __RCSID("$NetBSD: dtide.c,v 1.3 2001/11/13 07:23:15 lukem Exp $");
     36 
     37 #include <sys/param.h>
     38 
     39 #include <sys/device.h>
     40 #include <sys/malloc.h>
     41 #include <sys/systm.h>
     42 
     43 #include <machine/bus.h>
     44 
     45 #include <dev/podulebus/podulebus.h>
     46 #include <dev/podulebus/podules.h>
     47 #include <dev/podulebus/dtidereg.h>
     48 
     49 #include <dev/ata/atavar.h>
     50 #include <dev/ic/wdcvar.h>
     51 
     52 struct dtide_softc {
     53 	struct wdc_softc sc_wdc;
     54 	struct channel_softc *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
     55 	struct channel_softc sc_chan[DTIDE_NCHANNELS];
     56 	struct channel_queue sc_chq[DTIDE_NCHANNELS];
     57 	bus_space_tag_t		sc_magict;
     58 	bus_space_handle_t	sc_magich;
     59 };
     60 
     61 static int dtide_match(struct device *, struct cfdata *, void *);
     62 static void dtide_attach(struct device *, struct device *, void *);
     63 
     64 struct cfattach dtide_ca = {
     65 	sizeof(struct dtide_softc), dtide_match, dtide_attach
     66 };
     67 
     68 static const int dtide_cmdoffsets[] = { DTIDE_CMDBASE0, DTIDE_CMDBASE1 };
     69 static const int dtide_ctloffsets[] = { DTIDE_CTLBASE0, DTIDE_CTLBASE1 };
     70 
     71 static int
     72 dtide_match(struct device *parent, struct cfdata *cf, void *aux)
     73 {
     74 	struct podulebus_attach_args *pa = aux;
     75 
     76 	return pa->pa_product == PODULE_DTSOFT_IDE;
     77 }
     78 
     79 static void
     80 dtide_attach(struct device *parent, struct device *self, void *aux)
     81 {
     82 	struct podulebus_attach_args *pa = aux;
     83 	struct dtide_softc *sc = (void *)self;
     84 	int i;
     85 	bus_space_tag_t bst;
     86 
     87 	sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
     88 	sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
     89 	sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
     90 	sc->sc_wdc.UDMA_cap = 0;
     91 	sc->sc_wdc.nchannels = DTIDE_NCHANNELS;
     92 	sc->sc_wdc.channels = sc->sc_chp;
     93 	sc->sc_magict = pa->pa_fast_t;
     94 	bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
     95 	    &sc->sc_magich);
     96 	podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
     97 	printf("\n");
     98 	for (i = 0; i < DTIDE_NCHANNELS; i++) {
     99 		sc->sc_chp[i] = &sc->sc_chan[i];
    100 		sc->sc_chan[i].channel = i;
    101 		sc->sc_chan[i].wdc = &sc->sc_wdc;
    102 		sc->sc_chan[i].cmd_iot = bst;
    103 		sc->sc_chan[i].ctl_iot = bst;
    104 		sc->sc_chan[i].ch_queue = &sc->sc_chq[i];
    105 		bus_space_map(pa->pa_fast_t,
    106 		    pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
    107 		    &sc->sc_chan[i].cmd_ioh);
    108 		bus_space_map(pa->pa_fast_t,
    109 		    pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
    110 		    &sc->sc_chan[i].ctl_ioh);
    111 		wdcattach(&sc->sc_chan[i]);
    112 	}
    113 }
    114