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dtide.c revision 1.1 
      1 /* $NetBSD: dtide.c,v 1.1 2001/06/08 20:13:24 bjh21 Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 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/param.h>
     35 
     36 __RCSID("$NetBSD: dtide.c,v 1.1 2001/06/08 20:13:24 bjh21 Exp $");
     37 
     38 #include <sys/device.h>
     39 #include <sys/systm.h>
     40 #include <machine/bus.h>
     41 
     42 #include <dev/podulebus/podulebus.h>
     43 #include <dev/podulebus/podules.h>
     44 #include <dev/podulebus/dtidereg.h>
     45 
     46 #include <dev/ata/atavar.h>
     47 #include <dev/ic/wdcvar.h>
     48 
     49 struct dtide_softc {
     50 	struct wdc_softc sc_wdc;
     51 	struct channel_softc *sc_chp[2]; /* pointers to the following */
     52 	struct channel_softc sc_chan[2];
     53 	void			*sc_ih[2];
     54 	struct evcnt		sc_intrcnt[2];
     55 	bus_space_tag_t		sc_magict;
     56 	bus_space_handle_t	sc_magich;
     57 };
     58 
     59 static int dtide_match(struct device *, struct cfdata *, void *);
     60 static void dtide_attach(struct device *, struct device *, void *);
     61 
     62 struct cfattach dtide_ca = {
     63 	sizeof(struct dtide_softc), dtide_match, dtide_attach
     64 };
     65 
     66 static const char *dtide_intrnames[] = {
     67 	"channel 0 intr", "channel 1 intr",
     68 };
     69 
     70 static int
     71 dtide_match(struct device *parent, struct cfdata *cf, void *aux)
     72 {
     73 	struct podulebus_attach_args *pa = aux;
     74 
     75 	return pa->pa_product == PODULE_DTSOFT_IDE;
     76 }
     77 
     78 static void
     79 dtide_attach(struct device *parent, struct device *self, void *aux)
     80 {
     81 	struct podulebus_attach_args *pa = aux;
     82 	struct dtide_softc *sc = (void *)self;
     83 	int i;
     84 	bus_space_tag_t bst;
     85 
     86 	sc->sc_wdc.cap = WDC_CAPABILITY_DATA16;
     87 	sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
     88 	sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
     89 	sc->sc_wdc.UDMA_cap = 0;
     90 	sc->sc_wdc.nchannels = 2;
     91 	sc->sc_wdc.channels = sc->sc_chp;
     92 	sc->sc_chp[0] = &sc->sc_chan[0];
     93 	sc->sc_chp[1] = &sc->sc_chan[1];
     94 	sc->sc_magict = pa->pa_fast_t;
     95 	bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
     96 	    &sc->sc_magich);
     97 	podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
     98 	for (i = 0; i < 2; i++) {
     99 		sc->sc_chan[i].channel = i;
    100 		sc->sc_chan[i].wdc = &sc->sc_wdc;
    101 		sc->sc_chan[i].cmd_iot = bst;
    102 		sc->sc_chan[i].ctl_iot = bst;
    103 	}
    104 	bus_space_map(bst, pa->pa_fast_base + DTIDE_CMDBASE0, 0, 0x100,
    105 	    &sc->sc_chan[0].cmd_ioh);
    106 	bus_space_map(bst, pa->pa_fast_base + DTIDE_CTLBASE0, 0, 0x100,
    107 	    &sc->sc_chan[0].ctl_ioh);
    108 	bus_space_map(bst, pa->pa_fast_base + DTIDE_CMDBASE1, 0, 0x100,
    109 	    &sc->sc_chan[1].cmd_ioh);
    110 	bus_space_map(bst, pa->pa_fast_base + DTIDE_CTLBASE1, 0, 0x100,
    111 	    &sc->sc_chan[1].ctl_ioh);
    112 	printf("\n");
    113 	for (i = 0; i < 2; i++) {
    114 		evcnt_attach_dynamic(&sc->sc_intrcnt[i], EVCNT_TYPE_INTR, NULL,
    115 		    self->dv_xname, dtide_intrnames[i]);
    116 		sc->sc_ih[i] = podulebus_irq_establish(pa->pa_ih, IPL_BIO,
    117 		    wdcintr, &sc->sc_chan[i], &sc->sc_intrcnt[i]);
    118 		wdcattach(&sc->sc_chan[i]);
    119 	}
    120 }
    121