NetBSD/sys/dev/podulebus/dtide.c

118 lines
4.0 KiB
C

/* $NetBSD: dtide.c,v 1.15 2004/01/03 22:56:53 thorpej 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.
*/
/*
* dtide.c - Driver for the D.T. Software IDE interface.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dtide.c,v 1.15 2004/01/03 22:56:53 thorpej Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <dev/podulebus/podulebus.h>
#include <dev/podulebus/podules.h>
#include <dev/podulebus/dtidereg.h>
#include <dev/ic/wdcreg.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
struct dtide_softc {
struct wdc_softc sc_wdc;
struct wdc_channel *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
struct wdc_channel sc_chan[DTIDE_NCHANNELS];
struct ata_queue sc_chq[DTIDE_NCHANNELS];
bus_space_tag_t sc_magict;
bus_space_handle_t sc_magich;
};
static int dtide_match(struct device *, struct cfdata *, void *);
static void dtide_attach(struct device *, struct device *, void *);
CFATTACH_DECL(dtide, sizeof(struct dtide_softc),
dtide_match, dtide_attach, NULL, NULL);
static const int dtide_cmdoffsets[] = { DTIDE_CMDBASE0, DTIDE_CMDBASE1 };
static const int dtide_ctloffsets[] = { DTIDE_CTLBASE0, DTIDE_CTLBASE1 };
static int
dtide_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct podulebus_attach_args *pa = aux;
return pa->pa_product == PODULE_DTSOFT_IDE;
}
static void
dtide_attach(struct device *parent, struct device *self, void *aux)
{
struct podulebus_attach_args *pa = aux;
struct dtide_softc *sc = (void *)self;
struct wdc_channel *ch;
int i, j;
bus_space_tag_t bst;
sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
sc->sc_wdc.UDMA_cap = 0;
sc->sc_wdc.nchannels = DTIDE_NCHANNELS;
sc->sc_wdc.channels = sc->sc_chp;
sc->sc_magict = pa->pa_fast_t;
bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
&sc->sc_magich);
podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
printf("\n");
for (i = 0; i < DTIDE_NCHANNELS; i++) {
ch = sc->sc_chp[i] = &sc->sc_chan[i];
ch->ch_channel = i;
ch->ch_wdc = &sc->sc_wdc;
ch->cmd_iot = bst;
ch->ctl_iot = bst;
ch->ch_queue = &sc->sc_chq[i];
bus_space_map(pa->pa_fast_t,
pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
&ch->cmd_baseioh);
for (j = 0; j < WDC_NREG; j++)
bus_space_subregion(ch->cmd_iot, ch->cmd_baseioh,
j, j == 0 ? 4 : 1, &ch->cmd_iohs[j]);
bus_space_map(pa->pa_fast_t,
pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
&ch->ctl_ioh);
wdcattach(ch);
}
}