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dtide.c revision 1.17 
      1 /* $NetBSD: dtide.c,v 1.17 2004/08/14 15:08:06 thorpej 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 /*
     30  * dtide.c - Driver for the D.T. Software IDE interface.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: dtide.c,v 1.17 2004/08/14 15:08:06 thorpej Exp $");
     35 
     36 #include <sys/param.h>
     37 
     38 #include <sys/device.h>
     39 #include <sys/malloc.h>
     40 #include <sys/systm.h>
     41 
     42 #include <machine/bus.h>
     43 
     44 #include <dev/podulebus/podulebus.h>
     45 #include <dev/podulebus/podules.h>
     46 #include <dev/podulebus/dtidereg.h>
     47 
     48 #include <dev/ic/wdcreg.h>
     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 ata_channel *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
     55 	struct ata_channel sc_chan[DTIDE_NCHANNELS];
     56 	struct ata_queue sc_chq[DTIDE_NCHANNELS];
     57 	struct wdc_regs sc_wdc_regs[DTIDE_NCHANNELS];
     58 	bus_space_tag_t		sc_magict;
     59 	bus_space_handle_t	sc_magich;
     60 };
     61 
     62 static int dtide_match(struct device *, struct cfdata *, void *);
     63 static void dtide_attach(struct device *, struct device *, void *);
     64 
     65 CFATTACH_DECL(dtide, sizeof(struct dtide_softc),
     66     dtide_match, dtide_attach, NULL, NULL);
     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 	struct wdc_regs *wdr;
     85 	struct ata_channel *ch;
     86 	int i, j;
     87 	bus_space_tag_t bst;
     88 
     89 	sc->sc_wdc.regs = sc->sc_wdc_regs;
     90 
     91 	sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
     92 	sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
     93 	sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
     94 	sc->sc_wdc.UDMA_cap = 0;
     95 	sc->sc_wdc.nchannels = DTIDE_NCHANNELS;
     96 	sc->sc_wdc.channels = sc->sc_chp;
     97 	sc->sc_magict = pa->pa_fast_t;
     98 	bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
     99 	    &sc->sc_magich);
    100 	podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
    101 	printf("\n");
    102 	for (i = 0; i < DTIDE_NCHANNELS; i++) {
    103 		ch = sc->sc_chp[i] = &sc->sc_chan[i];
    104 		wdr = &sc->sc_wdc_regs[i];
    105 		ch->ch_channel = i;
    106 		ch->ch_wdc = &sc->sc_wdc;
    107 		wdr->cmd_iot = bst;
    108 		wdr->ctl_iot = bst;
    109 		ch->ch_queue = &sc->sc_chq[i];
    110 		bus_space_map(pa->pa_fast_t,
    111 		    pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
    112 		    &wdr->cmd_baseioh);
    113 		for (j = 0; j < WDC_NREG; j++)
    114 			bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
    115 			    j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
    116 		wdc_init_shadow_regs(ch);
    117 		bus_space_map(pa->pa_fast_t,
    118 		    pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
    119 		    &wdr->ctl_ioh);
    120 		wdcattach(ch);
    121 	}
    122 }
    123