NetBSD/sys/dev/pcmcia/fdc_pcmcia.c

194 lines
5.5 KiB
C

/* $NetBSD: fdc_pcmcia.c,v 1.20 2008/04/28 20:23:56 martin Exp $ */
/*-
* Copyright (c) 1998, 2004 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.
*
* 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 1.20 2008/04/28 20:23:56 martin 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 <sys/bus.h>
#include <sys/intr.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciadevs.h>
#include <dev/isa/isavar.h>
#include <dev/isa/fdreg.h>
#include <dev/isa/fdcvar.h>
struct fdc_pcmcia_softc {
struct fdc_softc sc_fdc; /* real "fdc" softc */
struct pcmcia_function *sc_pf; /* our PCMCIA function */
};
int fdc_pcmcia_match(device_t, cfdata_t, void *);
int fdc_pcmcia_validate_config(struct pcmcia_config_entry *);
void fdc_pcmcia_attach(device_t, device_t, void *);
static void fdc_conf(struct fdc_softc *);
CFATTACH_DECL_NEW(fdc_pcmcia, sizeof(struct fdc_pcmcia_softc),
fdc_pcmcia_match, fdc_pcmcia_attach, NULL, NULL);
const struct pcmcia_product fdc_pcmcia_products[] = {
{ PCMCIA_VENDOR_YEDATA, PCMCIA_PRODUCT_YEDATA_EXTERNAL_FDD,
PCMCIA_CIS_YEDATA_EXTERNAL_FDD },
};
const size_t fdc_pcmcia_nproducts =
sizeof(fdc_pcmcia_products) / sizeof(fdc_pcmcia_products[0]);
static void
fdc_conf(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_match(device_t parent, cfdata_t match, void *aux)
{
struct pcmcia_attach_args *pa = aux;
if (pcmcia_product_lookup(pa, fdc_pcmcia_products, fdc_pcmcia_nproducts,
sizeof(fdc_pcmcia_products[0]), NULL))
return (1);
return (0);
}
void
fdc_pcmcia_attach(device_t parent, device_t self, void *aux)
{
struct fdc_pcmcia_softc *psc = device_private(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;
int error;
fdc->sc_dev = self;
psc->sc_pf = pf;
error = pcmcia_function_configure(pf, fdc_pcmcia_validate_config);
if (error) {
aprint_error_dev(self, "configure failed, error=%d\n", error);
return;
}
cfe = pf->cfe;
fdc->sc_iot = cfe->iospace[0].handle.iot;
fdc->sc_iot = cfe->iospace[0].handle.ioh;
if (pcmcia_function_enable(pf))
goto fail;
fdc->sc_flags = FDC_HEADSETTLE;
fdc->sc_state = DEVIDLE;
TAILQ_INIT(&fdc->sc_drives);
if (!fdcfind(fdc->sc_iot, fdc->sc_ioh, 1))
aprint_error_dev(self, "coundn't find fdc\n");
fdc_conf(fdc);
/* Establish the interrupt handler. */
fdc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_BIO, fdchwintr, fdc);
if (!fdc->sc_ih)
goto fail;
/* 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);
}
return;
fail:
pcmcia_function_unconfigure(pf);
}