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3ed7a59b07
minute. This should cover all of the missed cases (and should let LINT build again).
440 lines
11 KiB
C
440 lines
11 KiB
C
/* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */
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/*
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*
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* Copyright (c) 1996 Charles D. Cranor and Washington University.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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*
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* i f _ e n _ p c i . c
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*
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* author: Chuck Cranor <chuck@ccrc.wustl.edu>
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* started: spring, 1996.
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*
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* FreeBSD PCI glue for the eni155p card.
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* thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs.
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*/
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#include "en.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#if defined(__FreeBSD__)
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#include <sys/eventhandler.h>
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#endif
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <machine/clock.h> /* for DELAY */
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#include <net/if.h>
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#include <pci/pcivar.h>
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#include <pci/pcireg.h>
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#include <dev/en/midwayreg.h>
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#include <dev/en/midwayvar.h>
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/*
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* prototypes
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*/
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static void en_pci_attach __P((pcici_t, int));
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static const char *en_pci_probe __P((pcici_t, pcidi_t));
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static void en_pci_shutdown __P((void *, int));
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/*
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* local structures
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*/
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struct en_pci_softc {
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/* bus independent stuff */
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struct en_softc esc; /* includes "device" structure */
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/* PCI bus glue */
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void *sc_ih; /* interrupt handle */
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pci_chipset_tag_t en_pc; /* for PCI calls */
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pcici_t en_confid; /* config id */
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};
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#if !defined(MIDWAY_ENIONLY)
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static void eni_get_macaddr __P((struct en_pci_softc *));
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#endif
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#if !defined(MIDWAY_ADPONLY)
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static void adp_get_macaddr __P((struct en_pci_softc *));
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#endif
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/*
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* pointers to softcs (we alloc)
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*/
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static struct en_pci_softc *enpcis[NEN] = {0};
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extern struct cfdriver en_cd;
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/*
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* autoconfig structures
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*/
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static u_long en_pci_count;
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static struct pci_device endevice = {
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"en",
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en_pci_probe,
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en_pci_attach,
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&en_pci_count,
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NULL,
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};
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COMPAT_PCI_DRIVER (en, endevice);
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/*
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* local defines (PCI specific stuff)
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*/
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/*
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* address of config base memory address register in PCI config space
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* (this is card specific)
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*/
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#define PCI_CBMA 0x10
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/*
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* tonga (pci bridge). ENI cards only!
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*/
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#define EN_TONGA 0x60 /* PCI config addr of tonga reg */
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#define TONGA_SWAP_DMA 0x80 /* endian swap control */
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#define TONGA_SWAP_BYTE 0x40
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#define TONGA_SWAP_WORD 0x20
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/*
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* adaptec pci bridge. ADP cards only!
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*/
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#define ADP_PCIREG 0x050040 /* PCI control register */
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#define ADP_PCIREG_RESET 0x1 /* reset card */
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#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
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#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
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#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */
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#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */
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#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */
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#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */
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#define PCI_VENDOR_ADP 0x9004 /* adaptec */
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#define PCI_PRODUCT_ADP_AIC5900 0x5900
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#define PCI_PRODUCT_ADP_AIC5905 0x5905
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#define PCI_VENDOR(x) ((x) & 0xFFFF)
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#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
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#if !defined(MIDWAY_ENIONLY)
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static void adp_busreset __P((void *));
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/*
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* bus specific reset function [ADP only!]
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*/
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static void adp_busreset(v)
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void *v;
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{
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struct en_softc *sc = (struct en_softc *) v;
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u_int32_t dummy;
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bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET);
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DELAY(1000); /* let it reset */
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dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
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bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
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(ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE));
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dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
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if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) !=
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(ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA))
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printf("adp_busreset: Adaptec ATM did NOT reset!\n");
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}
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#endif
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/***********************************************************************/
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/*
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* autoconfig stuff
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*/
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static const char *en_pci_probe(config_id, device_id)
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pcici_t config_id;
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pcidi_t device_id;
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{
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#if !defined(MIDWAY_ADPONLY)
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if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS &&
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(PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
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PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
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return "Efficient Networks ENI-155p";
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#endif
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#if !defined(MIDWAY_ENIONLY)
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if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP &&
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(PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 ||
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PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905))
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return "Adaptec 155 ATM";
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#endif
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return 0;
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}
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static void en_pci_attach(config_id, unit)
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pcici_t config_id;
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int unit;
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{
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struct en_softc *sc;
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struct en_pci_softc *scp;
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pcidi_t device_id;
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int retval;
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vm_offset_t pa;
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if (unit >= NEN) {
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printf("en%d: not configured; kernel is built for only %d device%s.\n",
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unit, NEN, NEN == 1 ? "" : "s");
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return;
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}
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scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT);
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if (scp == NULL)
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return;
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bzero(scp, sizeof(*scp)); /* zero */
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sc = &scp->esc;
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retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa);
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if (!retval) {
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free((caddr_t) scp, M_DEVBUF);
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return;
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}
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enpcis[unit] = scp; /* lock it in */
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en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */
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en_cd.cd_ndevs = NEN;
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snprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "en%d", unit);
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sc->enif.if_unit = unit;
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sc->enif.if_name = "en";
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scp->en_confid = config_id;
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/*
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* figure out if we are an adaptec card or not.
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* XXX: why do we have to re-read PC_ID_REG when en_pci_probe already
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* had that info?
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*/
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device_id = pci_conf_read(config_id, PCI_ID_REG);
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sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0;
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/*
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* Add shutdown hook so that DMA is disabled prior to reboot. Not
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* doing so could allow DMA to corrupt kernel memory during the
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* reboot before the driver initializes.
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*/
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EVENTHANDLER_REGISTER(shutdown_post_sync, en_pci_shutdown, scp,
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SHUTDOWN_PRI_DEFAULT);
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if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) {
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printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->ipl = 1; /* XXX */
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/*
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* set up pci bridge
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*/
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#if !defined(MIDWAY_ENIONLY)
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if (sc->is_adaptec) {
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adp_get_macaddr(scp);
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sc->en_busreset = adp_busreset;
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adp_busreset(sc);
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}
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#endif
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#if !defined(MIDWAY_ADPONLY)
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if (!sc->is_adaptec) {
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eni_get_macaddr(scp);
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sc->en_busreset = NULL;
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pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD));
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}
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#endif
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/*
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* done PCI specific stuff
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*/
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en_attach(sc);
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}
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static void
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en_pci_shutdown(
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void *sc,
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int howto)
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{
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struct en_pci_softc *psc = (struct en_pci_softc *)sc;
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en_reset(&psc->esc);
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DELAY(10);
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}
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#if !defined(MIDWAY_ENIONLY)
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#if defined(sparc) || defined(__FreeBSD__)
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#define bus_space_read_1(t, h, o) \
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((void)t, (*(volatile u_int8_t *)((h) + (o))))
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#endif
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static void
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adp_get_macaddr(scp)
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struct en_pci_softc *scp;
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{
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struct en_softc * sc = (struct en_softc *)scp;
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int lcv;
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for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++)
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sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base,
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MID_ADPMACOFF + lcv);
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}
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#endif /* MIDWAY_ENIONLY */
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#if !defined(MIDWAY_ADPONLY)
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/*
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* Read station (MAC) address from serial EEPROM.
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* derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC.
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*/
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#define EN_PROM_MAGIC 0x0c
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#define EN_PROM_DATA 0x02
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#define EN_PROM_CLK 0x01
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#define EN_ESI 64
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static void
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eni_get_macaddr(scp)
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struct en_pci_softc *scp;
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{
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struct en_softc * sc = (struct en_softc *)scp;
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pcici_t id = scp->en_confid;
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int i, j, address, status;
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u_int32_t data, t_data;
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u_int8_t tmp;
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t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00;
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data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
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pci_conf_write(id, EN_TONGA, data);
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for (i = 0; i < sizeof(sc->macaddr); i ++){
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/* start operation */
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data &= ~EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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data &= ~EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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/* send address with serial line */
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address = ((i + EN_ESI) << 1) + 1;
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for ( j = 7 ; j >= 0 ; j --){
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data = (address >> j) & 1 ? data | EN_PROM_DATA :
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data & ~EN_PROM_DATA;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data &= ~EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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}
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/* get ack */
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data = pci_conf_read(id, EN_TONGA);
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status = data & EN_PROM_DATA;
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data &= ~EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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tmp = 0;
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for ( j = 7 ; j >= 0 ; j --){
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tmp <<= 1;
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data = pci_conf_read(id, EN_TONGA);
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if(data & EN_PROM_DATA) tmp |= 1;
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data &= ~EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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}
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/* get ack */
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data = pci_conf_read(id, EN_TONGA);
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status = data & EN_PROM_DATA;
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data &= ~EN_PROM_CLK ;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_DATA ;
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pci_conf_write(id, EN_TONGA, data);
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sc->macaddr[i] = tmp;
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}
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/* stop operation */
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data &= ~EN_PROM_DATA;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_CLK;
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pci_conf_write(id, EN_TONGA, data);
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data |= EN_PROM_DATA;
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pci_conf_write(id, EN_TONGA, data);
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pci_conf_write(id, EN_TONGA, t_data);
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}
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#endif /* !MIDWAY_ADPONLY */
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