/*      $NetBSD: hcide.c,v 1.27 2017/10/20 07:06:08 jdolecek Exp $      */

/*-
* Copyright (c) 2000, 2001 Ben Harris
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* hcide.c - Driver for the HCCS 16-bit IDE interface.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hcide.c,v 1.27 2017/10/20 07:06:08 jdolecek Exp $");

#include <sys/param.h>

#include <sys/device.h>
#include <sys/systm.h>

#include <sys/bus.h>

#include <dev/podulebus/podulebus.h>
#include <dev/podulebus/podules.h>
#include <dev/podulebus/hcidereg.h>

#include <dev/ata/atavar.h>
#include <dev/ic/wdcreg.h>
#include <dev/ic/wdcvar.h>

struct hcide_softc {
       struct wdc_softc sc_wdc;
       struct ata_channel *sc_chp[HCIDE_NCHANNELS];/* pointers to sc_chan */
       struct ata_channel sc_chan[HCIDE_NCHANNELS];
       struct wdc_regs sc_wdc_regs[HCIDE_NCHANNELS];
};

static int  hcide_match  (device_t, cfdata_t, void *);
static void hcide_attach (device_t, device_t, void *);

CFATTACH_DECL_NEW(hcide, sizeof(struct hcide_softc),
   hcide_match, hcide_attach, NULL, NULL);

static const int hcide_cmdoffsets[] = { HCIDE_CMD0, HCIDE_CMD1, HCIDE_CMD2 };
static const int hcide_ctloffsets[] = { HCIDE_CTL, HCIDE_CTL, HCIDE_CTL };

static int
hcide_match(device_t parent, cfdata_t cf, void *aux)
{
       struct podulebus_attach_args *pa = aux;

       if (pa->pa_product == PODULE_HCCS_IDESCSI &&
           strncmp(pa->pa_descr, "IDE", 3) == 0)
               return 1;
       return 0;
}

static void
hcide_attach(device_t parent, device_t self, void *aux)
{
       struct hcide_softc *sc = device_private(self);
       struct wdc_regs *wdr;
       struct podulebus_attach_args *pa = aux;
       struct ata_channel *ch;
       int i, j;

       sc->sc_wdc.sc_atac.atac_dev = self;
       sc->sc_wdc.regs = sc->sc_wdc_regs;

       sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_NOIRQ;
       sc->sc_wdc.sc_atac.atac_pio_cap = 0; /* XXX correct? */
       sc->sc_wdc.sc_atac.atac_nchannels = HCIDE_NCHANNELS;
       sc->sc_wdc.sc_atac.atac_channels = sc->sc_chp;
       sc->sc_wdc.wdc_maxdrives = 2;
       aprint_normal("\n");
       for (i = 0; i < HCIDE_NCHANNELS; i++) {
               ch = sc->sc_chp[i] = &sc->sc_chan[i];
               wdr = &sc->sc_wdc_regs[i];
               ch->ch_channel = i;
               ch->ch_atac = &sc->sc_wdc.sc_atac;
               wdr->cmd_iot = pa->pa_mod_t;
               wdr->ctl_iot = pa->pa_mod_t;
               bus_space_map(pa->pa_fast_t,
                   pa->pa_fast_base + hcide_cmdoffsets[i], 0, 8,
                   &wdr->cmd_baseioh);
               for (j = 0; j < WDC_NREG; j++)
                       bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
                           j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
               wdc_init_shadow_regs(wdr);
               bus_space_map(pa->pa_fast_t,
                   pa->pa_fast_base + hcide_ctloffsets[i], 0, 8,
                   &wdr->ctl_ioh);
               wdcattach(ch);
       }
}