d8e1a7b61a
where it looks straightforward, and pci_aprint_devinfo_fancy in a few
others where drivers want to supply their own device names instead
of the pcidevs generated one. More complicated cases, where names
are composed at runtime, are left alone for now. It certainly makes
sense to simplify the drivers here rather than inventing a catch-all API.
This should serve as as example for new drivers, and also ensure
consistent output in the AB_QUIET ("boot -q") case. Also, it avoids
excessive stack usage where drivers attach child devices because the
buffer for the device name is not kept on the local stack anymore.
240 lines
6.6 KiB
C
240 lines
6.6 KiB
C
/* $NetBSD: if_epic_pci.c,v 1.40 2012/01/30 19:41:19 drochner Exp $ */
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/*-
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* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* PCI bus front-end for the Standard Microsystems Corp. 83C170
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* Ethernet PCI Integrated Controller (EPIC/100) driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_epic_pci.c,v 1.40 2012/01/30 19:41:19 drochner Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/mii/miivar.h>
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#include <dev/ic/smc83c170reg.h>
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#include <dev/ic/smc83c170var.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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/*
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* PCI configuration space registers used by the EPIC.
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*/
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#define EPIC_PCI_IOBA PCI_BAR(0) /* i/o mapped base */
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#define EPIC_PCI_MMBA PCI_BAR(1) /* memory mapped base */
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struct epic_pci_softc {
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struct epic_softc sc_epic; /* real EPIC softc */
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/* PCI-specific goo. */
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void *sc_ih; /* interrupt handle */
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};
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static int epic_pci_match(device_t, cfdata_t, void *);
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static void epic_pci_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(epic_pci, sizeof(struct epic_pci_softc),
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epic_pci_match, epic_pci_attach, NULL, NULL);
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static const struct epic_pci_product {
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uint32_t epp_prodid; /* PCI product ID */
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const char *epp_name; /* device name */
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} epic_pci_products[] = {
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{ PCI_PRODUCT_SMC_83C170, "SMC 83c170 Fast Ethernet" },
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{ PCI_PRODUCT_SMC_83C175, "SMC 83c175 Fast Ethernet" },
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{ 0, NULL },
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};
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static const struct epic_pci_product *
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epic_pci_lookup(const struct pci_attach_args *pa)
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{
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const struct epic_pci_product *epp;
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if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SMC)
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return NULL;
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for (epp = epic_pci_products; epp->epp_name != NULL; epp++)
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if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid)
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return epp;
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return NULL;
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}
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static const struct epic_pci_subsys_info {
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pcireg_t subsysid;
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int flags;
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} epic_pci_subsys_info[] = {
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{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa015), /* SMC9432BTX */
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EPIC_HAS_BNC },
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{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa024), /* SMC9432BTX1 */
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EPIC_HAS_BNC },
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{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa016), /* SMC9432FTX */
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EPIC_HAS_MII_FIBER | EPIC_DUPLEXLED_ON_694 },
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{ 0xffffffff,
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0 }
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};
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static const struct epic_pci_subsys_info *
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epic_pci_subsys_lookup(const struct pci_attach_args *pa)
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{
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pci_chipset_tag_t pc = pa->pa_pc;
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pcireg_t reg;
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const struct epic_pci_subsys_info *esp;
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reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
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for (esp = epic_pci_subsys_info; esp->subsysid != 0xffffffff; esp++)
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if (esp->subsysid == reg)
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return esp;
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return NULL;
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}
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static int
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epic_pci_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (epic_pci_lookup(pa) != NULL)
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return 1;
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return 0;
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}
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static void
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epic_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct epic_pci_softc *psc = device_private(self);
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struct epic_softc *sc = &psc->sc_epic;
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struct pci_attach_args *pa = aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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pci_intr_handle_t ih;
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const char *intrstr = NULL;
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const struct epic_pci_product *epp;
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const struct epic_pci_subsys_info *esp;
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bus_space_tag_t iot, memt;
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bus_space_handle_t ioh, memh;
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int ioh_valid, memh_valid;
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int error;
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sc->sc_dev = self;
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epp = epic_pci_lookup(pa);
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if (epp == NULL) {
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aprint_normal("\n");
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panic("%s: impossible", __func__);
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}
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pci_aprint_devinfo_fancy(pa, "Ethernet controller", epp->epp_name, 1);
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/* power up chip */
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if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
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NULL)) && error != EOPNOTSUPP) {
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aprint_error_dev(self, "cannot activate %d\n", error);
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return;
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}
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/*
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* Map the device.
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*/
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ioh_valid = (pci_mapreg_map(pa, EPIC_PCI_IOBA,
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PCI_MAPREG_TYPE_IO, 0,
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&iot, &ioh, NULL, NULL) == 0);
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memh_valid = (pci_mapreg_map(pa, EPIC_PCI_MMBA,
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PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
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&memt, &memh, NULL, NULL) == 0);
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if (memh_valid) {
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sc->sc_st = memt;
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sc->sc_sh = memh;
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} else if (ioh_valid) {
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sc->sc_st = iot;
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sc->sc_sh = ioh;
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} else {
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aprint_error_dev(self, "unable to map device registers\n");
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return;
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}
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sc->sc_dmat = pa->pa_dmat;
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/* Make sure bus mastering is enabled. */
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pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
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PCI_COMMAND_MASTER_ENABLE);
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/*
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* Map and establish our interrupt.
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*/
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if (pci_intr_map(pa, &ih)) {
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aprint_error_dev(self, "unable to 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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psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc);
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if (psc->sc_ih == NULL) {
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aprint_error_dev(self, "unable to establish interrupt");
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if (intrstr != NULL)
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aprint_error(" at %s", intrstr);
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aprint_error("\n");
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return;
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}
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aprint_normal_dev(self, "interrupting at %s\n", intrstr);
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esp = epic_pci_subsys_lookup(pa);
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if (esp)
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sc->sc_hwflags = esp->flags;
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/*
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* Finish off the attach.
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*/
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epic_attach(sc);
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}
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