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author | kjc <kjc@FreeBSD.org> | 1997-05-09 07:48:14 +0000 |
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committer | kjc <kjc@FreeBSD.org> | 1997-05-09 07:48:14 +0000 |
commit | 8b095c49c5faa3d657a0a0141c4db1a8d58c3bf8 (patch) | |
tree | 2d004a163f0900abb3f7da5901ef020c39dcc648 /sys/dev/en | |
parent | 8c1929a766f0c718c40bcfc93c3135ec5dd2defd (diff) | |
download | FreeBSD-src-8b095c49c5faa3d657a0a0141c4db1a8d58c3bf8.zip FreeBSD-src-8b095c49c5faa3d657a0a0141c4db1a8d58c3bf8.tar.gz |
import Chuck Cranor's ATM driver
Diffstat (limited to 'sys/dev/en')
-rw-r--r-- | sys/dev/en/if_en_pci.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/sys/dev/en/if_en_pci.c b/sys/dev/en/if_en_pci.c new file mode 100644 index 0000000..8f466ff --- /dev/null +++ b/sys/dev/en/if_en_pci.c @@ -0,0 +1,348 @@ +/* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */ + +/* + * + * Copyright (c) 1996 Charles D. Cranor and Washington University. + * All rights reserved. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Charles D. Cranor and + * Washington University. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +/* + * + * i f _ e n _ p c i . c + * + * author: Chuck Cranor <chuck@ccrc.wustl.edu> + * started: spring, 1996. + * + * FreeBSD PCI glue for the eni155p card. + * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs. + */ + +#include "en.h" +#include "pci.h" +#if (NEN > 0) && (NPCI > 0) + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#ifndef SHUTDOWN_PRE_SYNC +/* + * device shutdown mechanism has been changed since 2.2-ALPHA. + * if SHUTDOWN_PRE_SYNC is defined in "sys/systm.h", use new one. + * otherwise, use old one. + * new: 2.2-ALPHA, 2.2-BETA, 2.2-GAMME, 2.2-RELEASE, 3.0 + * old: 2.1.5, 2.1.6, 2.2-SNAP + * -- kjc + */ +#include <sys/devconf.h> +#endif +#include <sys/mbuf.h> +#include <sys/socket.h> +#include <sys/socketvar.h> + +#include <machine/cpufunc.h> /* for rdtsc proto for clock.h below */ +#include <machine/clock.h> /* for DELAY */ + +#include <net/if.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.h> + +#include <dev/en/midwayreg.h> +#include <dev/en/midwayvar.h> + + +/* + * prototypes + */ + +static void en_pci_attach __P((pcici_t, int)); +static char *en_pci_probe __P((pcici_t, pcidi_t)); +#ifdef SHUTDOWN_PRE_SYNC +static void en_pci_shutdown __P((int, void *)); +#else +static int en_pci_shutdown __P((struct kern_devconf *, int)); +#endif + +/* + * local structures + */ + +struct en_pci_softc { + /* bus independent stuff */ + struct en_softc esc; /* includes "device" structure */ + + /* PCI bus glue */ + void *sc_ih; /* interrupt handle */ + pci_chipset_tag_t en_pc; /* for PCI calls */ + +}; + +/* + * pointers to softcs (we alloc) + */ + +static struct en_pci_softc *enpcis[NEN] = {0}; +extern struct cfdriver en_cd; + +/* + * autoconfig structures + */ + +static u_long en_pci_count; + +static struct pci_device endevice = { + "en", + en_pci_probe, + en_pci_attach, + &en_pci_count, +#ifdef SHUTDOWN_PRE_SYNC + NULL, +#else + en_pci_shutdown, +#endif +}; + +DATA_SET (pcidevice_set, endevice); + +/* + * local defines (PCI specific stuff) + */ + +/* + * address of config base memory address register in PCI config space + * (this is card specific) + */ + +#define PCI_CBMA 0x10 + +/* + * tonga (pci bridge). ENI cards only! + */ + +#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ + +#define TONGA_SWAP_DMA 0x80 /* endian swap control */ +#define TONGA_SWAP_BYTE 0x40 +#define TONGA_SWAP_WORD 0x20 + +/* + * adaptec pci bridge. ADP cards only! + */ + +#define ADP_PCIREG 0x050040 /* PCI control register */ + +#define ADP_PCIREG_RESET 0x1 /* reset card */ +#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ +#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ +#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ + +#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ +#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ +#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ +#define PCI_VENDOR_ADP 0x9004 /* adaptec */ +#define PCI_PRODUCT_ADP_AIC5900 0x5900 +#define PCI_PRODUCT_ADP_AIC5905 0x5905 +#define PCI_VENDOR(x) ((x) & 0xFFFF) +#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) + +#if !defined(MIDWAY_ENIONLY) + +static void adp_busreset __P((void *)); + +/* + * bus specific reset function [ADP only!] + */ + +static void adp_busreset(v) + +void *v; + +{ + struct en_softc *sc = (struct en_softc *) v; + u_int32_t dummy; + + bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); + DELAY(1000); /* let it reset */ + dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); + bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, + (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); + dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); + if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != + (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) + printf("adp_busreset: Adaptec ATM did NOT reset!\n"); +} +#endif + +/***********************************************************************/ + +/* + * autoconfig stuff + */ + +static char *en_pci_probe(config_id, device_id) + +pcici_t config_id; +pcidi_t device_id; + +{ +#if !defined(MIDWAY_ADPONLY) + if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS && + (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || + PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) + return "Efficient Networks ENI-155p"; +#endif + +#if !defined(MIDWAY_ENIONLY) + if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP && + (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 || + PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905)) + return "Adaptec 155 ATM"; +#endif + + return 0; +} + +static void en_pci_attach(config_id, unit) + +pcici_t config_id; +int unit; + +{ + struct en_softc *sc; + struct en_pci_softc *scp; + pcidi_t device_id; + int retval; + vm_offset_t pa; + + if (unit >= NEN) { + printf("en%d: not configured; kernel is built for only %d device%s.\n", + unit, NEN, NEN == 1 ? "" : "s"); + return; + } + + scp = (struct en_pci_softc *) malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT); + if (scp == NULL) + return; + bzero(scp, sizeof(*scp)); /* zero */ + sc = &scp->esc; + + retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa); + + if (!retval) { + free((caddr_t) scp, M_DEVBUF); + return; + } + enpcis[unit] = scp; /* lock it in */ + en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */ + en_cd.cd_ndevs = NEN; + sprintf(sc->sc_dev.dv_xname, "en%d", unit); + sc->enif.if_unit = unit; + sc->enif.if_name = "en"; + + /* + * figure out if we are an adaptec card or not. + * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already + * had that info? + */ + + device_id = pci_conf_read(config_id, PCI_ID_REG); + sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0; + +#ifdef SHUTDOWN_PRE_SYNC + /* + * Add shutdown hook so that DMA is disabled prior to reboot. Not + * doing so could allow DMA to corrupt kernel memory during the + * reboot before the driver initializes. + */ + at_shutdown(en_pci_shutdown, scp, SHUTDOWN_POST_SYNC); +#endif + + if (!pci_map_int(config_id, en_intr, (void *) sc, &net_imask)) { + printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); + return; + } + sc->ipl = 1; /* XXX */ + + /* + * set up pci bridge + */ + +#if !defined(MIDWAY_ENIONLY) + if (sc->is_adaptec) { + sc->en_busreset = adp_busreset; + adp_busreset(sc); + } +#endif + +#if !defined(MIDWAY_ADPONLY) + if (!sc->is_adaptec) { + sc->en_busreset = NULL; + pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); + } +#endif + + /* + * done PCI specific stuff + */ + + en_attach(sc); + +} + +#ifdef SHUTDOWN_PRE_SYNC +static void +en_pci_shutdown( + int howto, + void *sc) +{ + struct en_pci_softc *psc = (struct en_pci_softc *)sc; + + en_reset(&psc->esc); + DELAY(10); +} +#else /* !SHUTDOWN_PRE_SYNC */ +static int +en_pci_shutdown(kdc, force) + +struct kern_devconf *kdc; +int force; + +{ + if (kdc->kdc_unit < NEN) { + struct en_pci_softc *psc = enpcis[kdc->kdc_unit]; + if (psc) /* can it be null? */ + en_reset(&psc->esc); + DELAY(10); + } + dev_detach(kdc); + return(0); +} +#endif /* !SHUTDOWN_PRE_SYNC */ +#endif /* NEN > 0 && NPCI > 0 */ |