851de295eb
pci_attach_args *" instead of from four separate parameters which in all cases were extracted from the same "struct pci_attach_args". This both simplifies the driver api, and allows for alternate PCI interrupt mapping schemes, such as one using the tables described in the Intel Multiprocessor Spec which describe interrupt wirings for devices behind pci-pci bridges based on the device's location rather the bridge's location. Tested on alpha and i386; welcome to 1.5Q
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/* $NetBSD: dpt_pci.c,v 1.7 2000/12/28 22:59:11 sommerfeld Exp $ */
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/*
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* Copyright (c) 1999 Andrew Doran <ad@NetBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* PCI front-end for DPT EATA SCSI driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dpt_pci.c,v 1.7 2000/12/28 22:59:11 sommerfeld Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/queue.h>
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#include <sys/proc.h>
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#include <machine/endian.h>
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#include <machine/bus.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/pcivar.h>
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#include <dev/ic/dptreg.h>
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#include <dev/ic/dptvar.h>
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#define PCI_CBMA 0x14 /* Configuration base memory address */
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#define PCI_CBIO 0x10 /* Configuration base I/O address */
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int dpt_pci_match __P((struct device *, struct cfdata *, void *));
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void dpt_pci_attach __P((struct device *, struct device *, void *));
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struct cfattach dpt_pci_ca = {
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sizeof(struct dpt_softc), dpt_pci_match, dpt_pci_attach
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};
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int
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dpt_pci_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pci_attach_args *pa;
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pa = (struct pci_attach_args *)aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_SC_RAID)
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return (1);
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return (0);
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}
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void
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dpt_pci_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct pci_attach_args *pa;
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struct dpt_softc *sc;
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pci_chipset_tag_t pc;
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pci_intr_handle_t ih;
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bus_space_handle_t ioh;
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const char *intrstr;
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pcireg_t csr;
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sc = (struct dpt_softc *)self;
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pa = (struct pci_attach_args *)aux;
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pc = pa->pa_pc;
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printf(": ");
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if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &sc->sc_iot,
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&ioh, NULL, NULL)) {
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printf("can't map i/o space\n");
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return;
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}
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/* Need to map in by 16 registers */
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if (bus_space_subregion(sc->sc_iot, ioh, 16, 16, &sc->sc_ioh)) {
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printf("can't map i/o subregion\n");
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return;
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}
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sc->sc_dmat = pa->pa_dmat;
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/* Enable the device. */
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csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MASTER_ENABLE);
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/* Map and establish the interrupt. */
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if (pci_intr_map(pa, &ih)) {
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printf("can't map interrupt\n");
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return;
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}
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intrstr = pci_intr_string(pc, ih);
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sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, dpt_intr, sc);
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if (sc->sc_ih == NULL) {
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printf("can't establish interrupt");
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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/* Read the EATA configuration */
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if (dpt_readcfg(sc)) {
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printf("%s: readcfg failed - see dpt(4)\n",
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sc->sc_dv.dv_xname);
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return;
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}
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/* Now attach to the bus-independent code */
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dpt_init(sc, intrstr);
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}
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