NetBSD/sys/dev/pcmcia/fdc_pcmcia.c

221 lines
6.4 KiB
C

/* $NetBSD: fdc_pcmcia.c,v 1.10 2002/10/02 16:52:07 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fdc_pcmcia.c,v 1.10 2002/10/02 16:52:07 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <sys/buf.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciadevs.h>
#include <dev/ic/fdcreg.h>
#include <dev/ic/fdcvar.h>
struct fdc_pcmcia_softc {
struct fdc_softc sc_fdc; /* real "fdc" softc */
/* PCMCIA-specific goo. */
struct pcmcia_io_handle sc_pcioh; /* PCMCIA i/o space info */
int sc_io_window; /* our i/o window */
struct pcmcia_function *sc_pf; /* our PCMCIA function */
};
int fdc_pcmcia_probe __P((struct device *, struct cfdata *, void *));
void fdc_pcmcia_attach __P((struct device *, struct device *, void *));
static void fdc_conf __P((struct fdc_softc *));
CFATTACH_DECL(fdc_pcmcia, sizeof(struct fdc_pcmcia_softc),
fdc_pcmcia_probe, fdc_pcmcia_attach, NULL, NULL);
static void
fdc_conf(fdc)
struct fdc_softc *fdc;
{
bus_space_tag_t iot = fdc->sc_iot;
bus_space_handle_t ioh = fdc->sc_ioh;
int n;
/* Figure out what we have */
if (out_fdc_cmd(iot, ioh, FDC_CMD_VERSION) == -1 ||
(n = fdcresult(fdc, 1)) != 1)
return;
/* Nec765 or equivalent */
if (FDC_ST0(fdc->sc_status[0]) == FDC_ST0_INVL)
return;
#if 0
/* ns8477 check */
if (out_fdc_cmd(iot, ioh, FDC_CMD_NSC) == -1 ||
(n = fdcresult(fdc, 1)) != 1) {
printf("NSC command failed\n");
return;
}
else
printf("Version %x\n", fdc->sc_status[0]);
#endif
if (out_fdc_cmd(iot, ioh, FDC_CMD_DUMPREG) == -1 ||
(n = fdcresult(fdc, -1)) == -1)
return;
/*
* Expect 10 bytes of status; one means that it did not
* understand the command
*/
if (n == 1)
return;
/*
* Configure controller to use FIFO and 8 bytes of FIFO threshold
*/
(void)out_fdc_cmd(iot, ioh, FDC_CMD_CONFIGURE);
(void)out_fdc(iot, ioh, 0x00); /* doc says 0 */
(void)out_fdc(iot, ioh, 8); /* FIFO is active low. */
(void)out_fdc(iot, ioh, fdc->sc_status[9]); /* same comp */
/* No result phase */
/* Lock this configuration */
if (out_fdc_cmd(iot, ioh, FDC_CMD_LOCK(FDC_CMD_FLAGS_LOCK)) == -1 ||
fdcresult(fdc, 1) != 1)
return;
}
int
fdc_pcmcia_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pcmcia_attach_args *pa = aux;
struct pcmcia_card *card = pa->card;
char *cis[4] = PCMCIA_CIS_YEDATA_EXTERNAL_FDD;
/* For this card the manufacturer and product are -1 */
if (strcmp(cis[0], card->cis1_info[0]) == 0 &&
strcmp(cis[1], card->cis1_info[1]) == 0)
return 1;
return 0;
}
void
fdc_pcmcia_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct fdc_pcmcia_softc *psc = (void *)self;
struct fdc_softc *fdc = &psc->sc_fdc;
struct pcmcia_attach_args *pa = aux;
struct pcmcia_config_entry *cfe;
struct pcmcia_function *pf = pa->pf;
struct fdc_attach_args fa;
psc->sc_pf = pf;
SIMPLEQ_FOREACH(cfe, &pf->cfe_head, cfe_list) {
if (cfe->num_memspace != 0 ||
cfe->num_iospace != 1)
continue;
if (pcmcia_io_alloc(pa->pf, cfe->iospace[0].start,
cfe->iospace[0].length, cfe->iospace[0].length,
&psc->sc_pcioh) == 0)
break;
}
if (cfe == 0) {
printf(": can't alloc i/o space\n");
return;
}
/* Enable the card. */
pcmcia_function_init(pf, cfe);
if (pcmcia_function_enable(pf)) {
printf(": function enable failed\n");
return;
}
/* Map in the io space */
if (pcmcia_io_map(pa->pf, PCMCIA_WIDTH_AUTO, 0, psc->sc_pcioh.size,
&psc->sc_pcioh, &psc->sc_io_window)) {
printf(": can't map i/o space\n");
return;
}
fdc->sc_iot = psc->sc_pcioh.iot;
fdc->sc_ioh = psc->sc_pcioh.ioh;
fdc->sc_flags = FDC_HEADSETTLE;
fdc->sc_state = DEVIDLE;
TAILQ_INIT(&fdc->sc_drives);
if (!fdcfind(fdc->sc_iot, fdc->sc_ioh, 1))
printf(": coundn't find fdc\n%s", fdc->sc_dev.dv_xname);
printf(": %s\n", PCMCIA_STR_YEDATA_EXTERNAL_FDD);
fdc_conf(fdc);
/* Establish the interrupt handler. */
fdc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_BIO, fdchwintr, fdc);
if (fdc->sc_ih == NULL)
printf("%s: couldn't establish interrupt\n",
fdc->sc_dev.dv_xname);
/* physical limit: four drives per controller. */
for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
if (fa.fa_drive < 2)
fa.fa_deftype = &fd_types[0];
else
fa.fa_deftype = NULL; /* unknown */
(void)config_found(self, (void *)&fa, fdprint);
}
}