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/* $OpenBSD: wdc_obio.c,v 1.5 2022/04/06 18:59:26 naddy Exp $ */
/* $NetBSD: wdc_obio.c,v 1.1 2006/09/01 21:26:18 uwe Exp $ */
/*-
* Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and by Onno van der Linden.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
#include <landisk/dev/obiovar.h>
struct wdc_obio_softc {
struct wdc_softc sc_wdcdev;
struct channel_softc *sc_chanptr;
struct channel_softc sc_channel;
void *sc_ih;
};
int wdc_obio_match(struct device *, void *, void *);
void wdc_obio_attach(struct device *, struct device *, void *);
const struct cfattach wdc_obio_ca = {
sizeof(struct wdc_obio_softc), wdc_obio_match, wdc_obio_attach
};
#define WDC_OBIO_REG_NPORTS WDC_NREG
#define WDC_OBIO_REG_SIZE (WDC_OBIO_REG_NPORTS * 2)
#define WDC_OBIO_AUXREG_NPORTS 1
#define WDC_OBIO_AUXREG_SIZE (WDC_OBIO_AUXREG_NPORTS * 2)
#define WDC_OBIO_AUXREG_OFFSET 0x2c
u_int8_t wdc_obio_read_reg(struct channel_softc *chp, enum wdc_regs reg);
void wdc_obio_write_reg(struct channel_softc *chp, enum wdc_regs reg,
u_int8_t val);
struct channel_softc_vtbl wdc_obio_vtbl = {
wdc_obio_read_reg,
wdc_obio_write_reg,
wdc_default_lba48_write_reg,
wdc_default_read_raw_multi_2,
wdc_default_write_raw_multi_2,
wdc_default_read_raw_multi_4,
wdc_default_write_raw_multi_4
};
int
wdc_obio_match(struct device *parent, void *vcf, void *aux)
{
struct obio_attach_args *oa = aux;
if (oa->oa_nio != 1)
return (0);
if (oa->oa_nirq != 1)
return (0);
if (oa->oa_niomem != 0)
return (0);
if (oa->oa_io[0].or_addr == IOBASEUNK)
return (0);
if (oa->oa_irq[0].or_irq == IRQUNK)
return (0);
/* XXX should probe for hardware */
oa->oa_io[0].or_size = WDC_OBIO_REG_SIZE;
return (1);
}
void
wdc_obio_attach(struct device *parent, struct device *self, void *aux)
{
struct wdc_obio_softc *sc = (void *)self;
struct obio_attach_args *oa = aux;
struct channel_softc *chp = &sc->sc_channel;
printf("\n");
chp->cmd_iot = chp->ctl_iot = oa->oa_iot;
chp->_vtbl = &wdc_obio_vtbl;
if (bus_space_map(chp->cmd_iot, oa->oa_io[0].or_addr,
WDC_OBIO_REG_SIZE, 0, &chp->cmd_ioh)
|| bus_space_map(chp->ctl_iot,
oa->oa_io[0].or_addr + WDC_OBIO_AUXREG_OFFSET,
WDC_OBIO_AUXREG_SIZE, 0, &chp->ctl_ioh)) {
printf(": couldn't map registers\n");
return;
}
sc->sc_ih = obio_intr_establish(oa->oa_irq[0].or_irq, IPL_BIO, wdcintr,
chp, self->dv_xname);
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA;
sc->sc_wdcdev.PIO_cap = 0;
sc->sc_chanptr = chp;
sc->sc_wdcdev.channels = &sc->sc_chanptr;
sc->sc_wdcdev.nchannels = 1;
chp->channel = 0;
chp->wdc = &sc->sc_wdcdev;
chp->ch_queue = wdc_alloc_queue();
if (chp->ch_queue == NULL) {
printf("%s: cannot allocate channel queue\n",
self->dv_xname);
obio_intr_disestablish(sc->sc_ih);
return;
}
wdcattach(chp);
wdc_print_current_modes(chp);
}
u_int8_t
wdc_obio_read_reg(struct channel_softc *chp, enum wdc_regs reg)
{
if (reg & _WDC_AUX)
return (bus_space_read_1(chp->ctl_iot, chp->ctl_ioh,
(reg & _WDC_REGMASK) << 1));
else
return (bus_space_read_1(chp->cmd_iot, chp->cmd_ioh,
(reg & _WDC_REGMASK) << 1));
}
void
wdc_obio_write_reg(struct channel_softc *chp, enum wdc_regs reg, u_int8_t val)
{
if (reg & _WDC_AUX)
bus_space_write_1(chp->ctl_iot, chp->ctl_ioh,
(reg & _WDC_REGMASK) << 1, val);
else
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh,
(reg & _WDC_REGMASK) << 1, val);
}
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