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authorkjc <kjc@FreeBSD.org>1997-05-09 07:48:14 +0000
committerkjc <kjc@FreeBSD.org>1997-05-09 07:48:14 +0000
commit8b095c49c5faa3d657a0a0141c4db1a8d58c3bf8 (patch)
tree2d004a163f0900abb3f7da5901ef020c39dcc648 /sys/dev/en
parent8c1929a766f0c718c40bcfc93c3135ec5dd2defd (diff)
downloadFreeBSD-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.c348
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 */
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