NetBSD-5.0.2/sys/dev/pci/if_epic_pci.c
/* $NetBSD: if_epic_pci.c,v 1.37 2008/07/06 14:32:56 tsutsui Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 bus front-end for the Standard Microsystems Corp. 83C170
* Ethernet PCI Integrated Controller (EPIC/100) driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_epic_pci.c,v 1.37 2008/07/06 14:32:56 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/mii/miivar.h>
#include <dev/ic/smc83c170reg.h>
#include <dev/ic/smc83c170var.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
/*
* PCI configuration space registers used by the EPIC.
*/
#define EPIC_PCI_IOBA 0x10 /* i/o mapped base */
#define EPIC_PCI_MMBA 0x14 /* memory mapped base */
struct epic_pci_softc {
struct epic_softc sc_epic; /* real EPIC softc */
/* PCI-specific goo. */
void *sc_ih; /* interrupt handle */
};
static int epic_pci_match(device_t, cfdata_t, void *);
static void epic_pci_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(epic_pci, sizeof(struct epic_pci_softc),
epic_pci_match, epic_pci_attach, NULL, NULL);
static const struct epic_pci_product {
uint32_t epp_prodid; /* PCI product ID */
const char *epp_name; /* device name */
} epic_pci_products[] = {
{ PCI_PRODUCT_SMC_83C170, "SMC 83c170 Fast Ethernet" },
{ PCI_PRODUCT_SMC_83C175, "SMC 83c175 Fast Ethernet" },
{ 0, NULL },
};
static const struct epic_pci_product *
epic_pci_lookup(const struct pci_attach_args *pa)
{
const struct epic_pci_product *epp;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SMC)
return NULL;
for (epp = epic_pci_products; epp->epp_name != NULL; epp++)
if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid)
return epp;
return NULL;
}
static const struct epic_pci_subsys_info {
pcireg_t subsysid;
int flags;
} epic_pci_subsys_info[] = {
{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa015), /* SMC9432BTX */
EPIC_HAS_BNC },
{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa024), /* SMC9432BTX1 */
EPIC_HAS_BNC },
{ PCI_ID_CODE(PCI_VENDOR_SMC, 0xa016), /* SMC9432FTX */
EPIC_HAS_MII_FIBER | EPIC_DUPLEXLED_ON_694 },
{ 0xffffffff,
0 }
};
static const struct epic_pci_subsys_info *
epic_pci_subsys_lookup(const struct pci_attach_args *pa)
{
pci_chipset_tag_t pc = pa->pa_pc;
pcireg_t reg;
const struct epic_pci_subsys_info *esp;
reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
for (esp = epic_pci_subsys_info; esp->subsysid != 0xffffffff; esp++)
if (esp->subsysid == reg)
return esp;
return NULL;
}
static int
epic_pci_match(device_t parent, cfdata_t cf, void *aux)
{
struct pci_attach_args *pa = aux;
if (epic_pci_lookup(pa) != NULL)
return 1;
return 0;
}
static void
epic_pci_attach(device_t parent, device_t self, void *aux)
{
struct epic_pci_softc *psc = device_private(self);
struct epic_softc *sc = &psc->sc_epic;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
const struct epic_pci_product *epp;
const struct epic_pci_subsys_info *esp;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
int ioh_valid, memh_valid;
int error;
sc->sc_dev = self;
aprint_naive(": Ethernet controller\n");
epp = epic_pci_lookup(pa);
if (epp == NULL) {
aprint_normal("\n");
panic("%s: impossible", __func__);
}
aprint_normal(": %s, rev. %d\n", epp->epp_name,
PCI_REVISION(pa->pa_class));
/* power up chip */
if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
NULL)) && error != EOPNOTSUPP) {
aprint_error_dev(self, "cannot activate %d\n", error);
return;
}
/*
* Map the device.
*/
ioh_valid = (pci_mapreg_map(pa, EPIC_PCI_IOBA,
PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, NULL) == 0);
memh_valid = (pci_mapreg_map(pa, EPIC_PCI_MMBA,
PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
&memt, &memh, NULL, NULL) == 0);
if (memh_valid) {
sc->sc_st = memt;
sc->sc_sh = memh;
} else if (ioh_valid) {
sc->sc_st = iot;
sc->sc_sh = ioh;
} else {
aprint_error_dev(self, "unable to map device registers\n");
return;
}
sc->sc_dmat = pa->pa_dmat;
/* Make sure bus mastering is enabled. */
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
PCI_COMMAND_MASTER_ENABLE);
/*
* Map and establish our interrupt.
*/
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "unable to map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc);
if (psc->sc_ih == NULL) {
aprint_error_dev(self, "unable to establish interrupt");
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
return;
}
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
esp = epic_pci_subsys_lookup(pa);
if (esp)
sc->sc_hwflags = esp->flags;
/*
* Finish off the attach.
*/
epic_attach(sc);
}