349 lines
8.8 KiB
C
349 lines
8.8 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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/*
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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 "pci.h"
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#if (NEN > 0) && (NPCI > 0)
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#ifndef SHUTDOWN_PRE_SYNC
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/*
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* device shutdown mechanism has been changed since 2.2-ALPHA.
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* if SHUTDOWN_PRE_SYNC is defined in "sys/systm.h", use new one.
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* otherwise, use old one.
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* new: 2.2-ALPHA, 2.2-BETA, 2.2-GAMME, 2.2-RELEASE, 3.0
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* old: 2.1.5, 2.1.6, 2.2-SNAP
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* -- kjc
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*/
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#include <sys/devconf.h>
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#endif
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <machine/cpufunc.h> /* for rdtsc proto for clock.h below */
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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 char *en_pci_probe __P((pcici_t, pcidi_t));
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#ifdef SHUTDOWN_PRE_SYNC
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static void en_pci_shutdown __P((int, void *));
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#else
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static int en_pci_shutdown __P((struct kern_devconf *, int));
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#endif
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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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};
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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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#ifdef SHUTDOWN_PRE_SYNC
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NULL,
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#else
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en_pci_shutdown,
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#endif
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};
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DATA_SET (pcidevice_set, 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 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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sprintf(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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/*
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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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#ifdef SHUTDOWN_PRE_SYNC
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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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at_shutdown(en_pci_shutdown, scp, SHUTDOWN_POST_SYNC);
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#endif
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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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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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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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#ifdef SHUTDOWN_PRE_SYNC
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static void
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en_pci_shutdown(
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int howto,
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void *sc)
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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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#else /* !SHUTDOWN_PRE_SYNC */
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static int
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en_pci_shutdown(kdc, force)
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struct kern_devconf *kdc;
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int force;
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{
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if (kdc->kdc_unit < NEN) {
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struct en_pci_softc *psc = enpcis[kdc->kdc_unit];
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if (psc) /* can it be null? */
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en_reset(&psc->esc);
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DELAY(10);
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}
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dev_detach(kdc);
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return(0);
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}
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#endif /* !SHUTDOWN_PRE_SYNC */
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#endif /* NEN > 0 && NPCI > 0 */
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