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/* $OpenBSD: iop_pci.c,v 1.6 2008/06/26 05:42:17 ray Exp $ */
/* $NetBSD: iop_pci.c,v 1.4 2001/03/20 13:21:00 ad Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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.
*/
/*
* PCI front-end for `iop' driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <sys/proc.h>
#include <machine/endian.h>
#include <machine/bus.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pcivar.h>
#include <dev/i2o/i2o.h>
#include <dev/i2o/iopreg.h>
#include <dev/i2o/iopio.h>
#include <dev/i2o/iopvar.h>
#define PCI_INTERFACE_I2O_POLLED 0x00
#define PCI_INTERFACE_I2O_INTRDRIVEN 0x01
void iop_pci_attach(struct device *, struct device *, void *);
int iop_pci_match(struct device *, void *, void *);
struct cfattach iop_pci_ca = {
sizeof(struct iop_softc), iop_pci_match, iop_pci_attach
};
int
iop_pci_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct pci_attach_args *pa;
pa = aux;
/*
* Look for an "intelligent I/O processor" that adheres to the I2O
* specification. Ignore the device if it doesn't support interrupt
* driven operation.
*/
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD &&
PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN)
return (1);
return (0);
}
void
iop_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct pci_attach_args *pa;
struct iop_softc *sc;
pci_chipset_tag_t pc;
pci_intr_handle_t ih;
const char *intrstr;
pcireg_t reg;
int i;
sc = (struct iop_softc *)self;
pa = (struct pci_attach_args *)aux;
pc = pa->pa_pc;
printf(": ");
/*
* The kernel always uses the first memory mapping to communicate
* with the IOP.
*/
for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) {
reg = pci_conf_read(pc, pa->pa_tag, i);
if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM)
break;
}
if (i == PCI_MAPREG_END) {
printf("can't find mapping\n");
return;
}
/* Map the register window. */
if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot,
&sc->sc_ioh, NULL, NULL, 0x40000)) {
printf("%s: can't map register window\n", sc->sc_dv.dv_xname);
return;
}
sc->sc_dmat = pa->pa_dmat;
sc->sc_bus_memt = pa->pa_memt;
sc->sc_bus_iot = pa->pa_iot;
/* Map and establish the interrupt. XXX IPL_BIO. */
if (pci_intr_map(pa, &ih)) {
printf("can't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc,
sc->sc_dv.dv_xname);
if (sc->sc_ih == NULL) {
printf("can't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
/* Attach to the bus-independent code. */
iop_init(sc, intrstr);
}
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