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      1 /* $NetBSD: dtide.c,v 1.30 2017/10/20 07:06:08 jdolecek 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 1.30 2017/10/20 07:06:08 jdolecek 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 <sys/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 wdc_regs sc_wdc_regs[DTIDE_NCHANNELS];
     57 	bus_space_tag_t		sc_magict;
     58 	bus_space_handle_t	sc_magich;
     59 };
     60 
     61 static int dtide_match(device_t, cfdata_t, void *);
     62 static void dtide_attach(device_t, device_t, void *);
     63 
     64 CFATTACH_DECL_NEW(dtide, sizeof(struct dtide_softc),
     65     dtide_match, dtide_attach, NULL, NULL);
     66 
     67 static const int dtide_cmdoffsets[] = { DTIDE_CMDBASE0, DTIDE_CMDBASE1 };
     68 static const int dtide_ctloffsets[] = { DTIDE_CTLBASE0, DTIDE_CTLBASE1 };
     69 
     70 static int
     71 dtide_match(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux)
     80 {
     81 	struct podulebus_attach_args *pa = aux;
     82 	struct dtide_softc *sc = device_private(self);
     83 	struct wdc_regs *wdr;
     84 	struct ata_channel *ch;
     85 	int i, j;
     86 	bus_space_tag_t bst;
     87 
     88 	sc->sc_wdc.sc_atac.atac_dev = self;
     89 	sc->sc_wdc.regs = sc->sc_wdc_regs;
     90 
     91 	sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_NOIRQ;
     92 	sc->sc_wdc.sc_atac.atac_pio_cap = 0; /* XXX correct? */
     93 	sc->sc_wdc.sc_atac.atac_nchannels = DTIDE_NCHANNELS;
     94 	sc->sc_wdc.sc_atac.atac_channels = sc->sc_chp;
     95 	sc->sc_wdc.wdc_maxdrives = 2;
     96 	sc->sc_magict = pa->pa_fast_t;
     97 	bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
     98 	    &sc->sc_magich);
     99 	podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
    100 	aprint_normal("\n");
    101 	for (i = 0; i < DTIDE_NCHANNELS; i++) {
    102 		ch = sc->sc_chp[i] = &sc->sc_chan[i];
    103 		wdr = &sc->sc_wdc_regs[i];
    104 		ch->ch_channel = i;
    105 		ch->ch_atac = &sc->sc_wdc.sc_atac;
    106 		wdr->cmd_iot = bst;
    107 		wdr->ctl_iot = bst;
    108 		bus_space_map(pa->pa_fast_t,
    109 		    pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
    110 		    &wdr->cmd_baseioh);
    111 		for (j = 0; j < WDC_NREG; j++)
    112 			bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
    113 			    j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
    114 		wdc_init_shadow_regs(wdr);
    115 		bus_space_map(pa->pa_fast_t,
    116 		    pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
    117 		    &wdr->ctl_ioh);
    118 		wdcattach(ch);
    119 	}
    120 }
    121