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/* $OpenBSD: wdc_isa.c,v 1.16 2017/09/08 05:36:52 deraadt Exp $ */
/* $NetBSD: wdc_isa.c,v 1.15 1999/05/19 14:41:25 bouyer Exp $ */
/*-
* Copyright (c) 1998 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/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
#include "isadma.h"
#define WDC_ISA_REG_NPORTS 8
#define WDC_ISA_AUXREG_OFFSET 0x206
#define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */
/* options passed via the 'flags' config keyword */
#define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */
struct wdc_isa_softc {
struct wdc_softc sc_wdcdev;
struct channel_softc *wdc_chanptr;
struct channel_softc wdc_channel;
struct device *sc_isa;
isa_chipset_tag_t sc_ic;
void *sc_ih;
int sc_drq;
};
int wdc_isa_probe(struct device *, void *, void *);
void wdc_isa_attach(struct device *, struct device *, void *);
struct cfattach wdc_isa_ca = {
sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach
};
#if NISADMA > 0
static void wdc_isa_dma_setup(struct wdc_isa_softc *);
static int wdc_isa_dma_init(void *, int, int, void *, size_t, int);
static void wdc_isa_dma_start(void *, int, int);
static int wdc_isa_dma_finish(void *, int, int, int);
#endif /* NISADMA > 0 */
int
wdc_isa_probe(struct device *parent, void *match, void *aux)
{
struct channel_softc ch;
struct isa_attach_args *ia = aux;
struct cfdata *cf = ((struct device *)match)->dv_cfdata;
int result = 0;
bzero(&ch, sizeof ch);
ch.cmd_iot = ia->ia_iot;
if (bus_space_map(ch.cmd_iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0,
&ch.cmd_ioh))
goto out;
ch.ctl_iot = ia->ia_iot;
if (bus_space_map(ch.ctl_iot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET,
WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh))
goto outunmap;
if (cf->cf_flags & WDC_OPTION_PROBE_VERBOSE)
ch.ch_flags |= WDCF_VERBOSE_PROBE;
result = wdcprobe(&ch);
if (result) {
ia->ia_iosize = WDC_ISA_REG_NPORTS;
ia->ia_msize = 0;
}
bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS);
outunmap:
bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_ISA_REG_NPORTS);
out:
return (result);
}
void
wdc_isa_attach(struct device *parent, struct device *self, void *aux)
{
struct wdc_isa_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
printf("\n");
sc->wdc_channel.cmd_iot = ia->ia_iot;
sc->wdc_channel.ctl_iot = ia->ia_iot;
sc->sc_ic = ia->ia_ic;
sc->sc_isa = parent;
if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_iobase,
WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) ||
bus_space_map(sc->wdc_channel.ctl_iot,
ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS,
0, &sc->wdc_channel.ctl_ioh)) {
printf("%s: couldn't map registers\n",
sc->sc_wdcdev.sc_dev.dv_xname);
}
sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot;
sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh;
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_BIO, wdcintr, &sc->wdc_channel, sc->sc_wdcdev.sc_dev.dv_xname);
if (ia->ia_drq != DRQUNK) {
#if NISADMA > 0
sc->sc_drq = ia->ia_drq;
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA;
sc->sc_wdcdev.dma_arg = sc;
sc->sc_wdcdev.dma_init = wdc_isa_dma_init;
sc->sc_wdcdev.dma_start = wdc_isa_dma_start;
sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish;
wdc_isa_dma_setup(sc);
#else /* NISADMA > 0 */
printf("%s: ignoring drq, isa dma not supported",
sc->sc_wdcdev.sc_dev.dv_xname);
#endif /* NISADMA > 0 */
}
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA;
if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32)
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32;
sc->sc_wdcdev.PIO_cap = 0;
sc->wdc_chanptr = &sc->wdc_channel;
sc->sc_wdcdev.channels = &sc->wdc_chanptr;
sc->sc_wdcdev.nchannels = 1;
sc->wdc_channel.channel = 0;
sc->wdc_channel.wdc = &sc->sc_wdcdev;
sc->wdc_channel.ch_queue = wdc_alloc_queue();
if (sc->wdc_channel.ch_queue == NULL) {
printf("%s: cannot allocate channel queue",
sc->sc_wdcdev.sc_dev.dv_xname);
return;
}
wdcattach(&sc->wdc_channel);
wdc_print_current_modes(&sc->wdc_channel);
}
#if NISADMA > 0
static void
wdc_isa_dma_setup(struct wdc_isa_softc *sc)
{
if (isa_dmamap_create(sc->sc_isa, sc->sc_drq,
MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
printf("%s: can't create map for drq %d\n",
sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA;
}
}
static int
wdc_isa_dma_init(void *v, int channel, int drive, void *databuf, size_t datalen,
int read)
{
struct wdc_isa_softc *sc = v;
isa_dmastart(sc->sc_isa, sc->sc_drq, databuf, datalen, NULL,
(read ? DMAMODE_READ : DMAMODE_WRITE),
BUS_DMA_NOWAIT);
return 0;
}
static void
wdc_isa_dma_start(void *v, int channel, int drive)
{
/* nothing to do */
}
static int
wdc_isa_dma_finish(void *v, int channel, int drive, int force)
{
struct wdc_isa_softc *sc = v;
isa_dmadone(sc->sc_isa, sc->sc_drq);
return 0;
}
#endif /* NISADMA > 0 */
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