NetBSD/sys/dev/isa/aic_isa.c

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/* $NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Charles M. Hannum. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Copyright (c) 1994 Jarle Greipsland
* 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.
*/
/*
* Acknowledgements: Many of the algorithms used in this driver are
* inspired by the work of Julian Elischer (julian@tfs.com) and
* Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/isa/isavar.h>
#include <dev/ic/aic6360reg.h>
#include <dev/ic/aic6360var.h>
static int aic_isa_probe(device_t, cfdata_t, void *);
static void aic_isa_attach(device_t, device_t, void *);
struct aic_isa_softc {
struct aic_softc sc_aic; /* real "aic" softc */
/* ISA-specific goo. */
void *sc_ih; /* interrupt handler */
};
CFATTACH_DECL_NEW(aic_isa, sizeof(struct aic_isa_softc),
aic_isa_probe, aic_isa_attach, NULL, NULL);
/*
* INITIALIZATION ROUTINES (probe, attach ++)
*/
/*
* aic_isa_probe: probe for AIC6360 SCSI-controller
* returns non-zero value if a controller is found.
*/
int
aic_isa_probe(device_t parent, cfdata_t match, void *aux)
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
int rv;
if (ia->ia_nio < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
/* Disallow wildcarded i/o address. */
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);
/* Disallow wildcarded IRQ. */
if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
return (0);
if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh))
return (0);
rv = aic_find(iot, ioh);
bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE);
if (rv) {
ia->ia_nio = 1;
ia->ia_io[0].ir_size = AIC_ISA_IOSIZE;
ia->ia_nirq = 1;
ia->ia_niomem = 0;
ia->ia_ndrq = 0;
}
return rv;
}
void
aic_isa_attach(device_t parent, device_t self, void *aux)
{
struct isa_attach_args *ia = aux;
struct aic_isa_softc *isc = device_private(self);
struct aic_softc *sc = &isc->sc_aic;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
isa_chipset_tag_t ic = ia->ia_ic;
sc->sc_dev = self;
printf("\n");
if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) {
aprint_error_dev(self, "can't map i/o space\n");
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
if (!aic_find(iot, ioh)) {
aprint_error_dev(self, "aic_find failed\n");
return;
}
isc->sc_ih = isa_intr_establish(ic, ia->ia_irq[0].ir_irq, IST_EDGE,
IPL_BIO, aicintr, sc);
if (isc->sc_ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt\n");
return;
}
aicattach(sc);
}