486 lines
12 KiB
C
486 lines
12 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 <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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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 int en_pci_probe(device_t);
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static int en_pci_attach(device_t);
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static int en_pci_detach(device_t);
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static int en_pci_shutdown(device_t);
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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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/* freebsd newbus glue */
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struct resource *res; /* resource descriptor for registers */
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struct resource *irq; /* resource descriptor for interrupt */
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void *ih; /* interrupt handle */
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};
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#if !defined(MIDWAY_ENIONLY)
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static void eni_get_macaddr(device_t, 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(struct en_pci_softc *);
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#endif
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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(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 int
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en_pci_probe(device_t dev)
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{
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switch (pci_get_vendor(dev)) {
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#if !defined(MIDWAY_ADPONLY)
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case PCI_VENDOR_EFFICIENTNETS:
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switch (pci_get_device(dev)) {
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case PCI_PRODUCT_EFFICIENTNETS_ENI155PF:
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case PCI_PRODUCT_EFFICIENTNETS_ENI155PA:
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device_set_desc(dev, "Efficient Networks ENI-155p");
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return 0;
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}
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break;
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#endif
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#if !defined(MIDWAY_ENIONLY)
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case PCI_VENDOR_ADP:
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switch (pci_get_device(dev)) {
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case PCI_PRODUCT_ADP_AIC5900:
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case PCI_PRODUCT_ADP_AIC5905:
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device_set_desc(dev, "Adaptec 155 ATM");
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return 0;
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}
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break;
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#endif
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}
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return ENXIO;
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}
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static int
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en_pci_attach(device_t dev)
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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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u_long val;
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int rid, s, unit, error = 0;
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sc = device_get_softc(dev);
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scp = (struct en_pci_softc *)sc;
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bzero(scp, sizeof(*scp)); /* zero */
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s = splimp();
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/*
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* Enable bus mastering.
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*/
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val = pci_read_config(dev, PCIR_COMMAND, 2);
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val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
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pci_write_config(dev, PCIR_COMMAND, val, 2);
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/*
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* Map control/status registers.
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*/
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rid = PCI_CBMA;
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scp->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (!scp->res) {
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device_printf(dev, "could not map memory\n");
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error = ENXIO;
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goto fail;
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}
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sc->en_memt = rman_get_bustag(scp->res);
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sc->en_base = rman_get_bushandle(scp->res);
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/*
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* Allocate our interrupt.
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*/
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rid = 0;
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scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
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RF_SHAREABLE | RF_ACTIVE);
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if (scp->irq == NULL) {
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device_printf(dev, "could not map interrupt\n");
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bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
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error = ENXIO;
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goto fail;
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}
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error = bus_setup_intr(dev, scp->irq, INTR_TYPE_NET,
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en_intr, sc, &scp->ih);
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if (error) {
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device_printf(dev, "could not setup irq\n");
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bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
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bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
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goto fail;
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}
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sc->ipl = 1; /* XXX (required to enable interrupt on midway) */
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unit = device_get_unit(dev);
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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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/* figure out if we are an adaptec card or not */
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sc->is_adaptec = (pci_get_vendor(dev) == PCI_VENDOR_ADP) ? 1 : 0;
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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(dev, scp);
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sc->en_busreset = NULL;
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pci_write_config(dev, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD), 4);
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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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splx(s);
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return 0;
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fail:
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splx(s);
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return error;
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}
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static int
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en_pci_detach(device_t dev)
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{
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struct en_softc *sc = device_get_softc(dev);
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struct en_pci_softc *scp = (struct en_pci_softc *)sc;
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int s;
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s = splimp();
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/*
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* Close down routes etc.
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*/
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if_detach(&sc->enif);
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/*
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* Stop DMA and drop transmit queue.
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*/
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en_reset(sc);
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/*
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* Deallocate resources.
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*/
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bus_teardown_intr(dev, scp->irq, scp->ih);
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bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq);
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bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res);
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#ifdef notyet
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/*
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* Free all the driver internal resources
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*/
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#endif
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splx(s);
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return 0;
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}
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static int
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en_pci_shutdown(device_t dev)
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{
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struct en_pci_softc *psc = (struct en_pci_softc *)device_get_softc(dev);
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en_reset(&psc->esc);
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DELAY(10); /* is this necessary? */
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return (0);
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}
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#if !defined(MIDWAY_ENIONLY)
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#if defined(sparc)
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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(device_t dev, 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 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_read_config(dev, EN_TONGA, 4) & 0xffffff00;
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data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
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pci_write_config(dev, EN_TONGA, data, 4);
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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_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data &= ~EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data &= ~EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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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_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data &= ~EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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}
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/* get ack */
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data |= EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data = pci_read_config(dev, EN_TONGA, 4);
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status = data & EN_PROM_DATA;
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data &= ~EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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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_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data = pci_read_config(dev, EN_TONGA, 4);
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if(data & EN_PROM_DATA) tmp |= 1;
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data &= ~EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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}
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/* get ack */
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data |= EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data = pci_read_config(dev, EN_TONGA, 4);
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status = data & EN_PROM_DATA;
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data &= ~EN_PROM_CLK ;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_DATA ;
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pci_write_config(dev, EN_TONGA, data, 4);
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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_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_CLK;
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pci_write_config(dev, EN_TONGA, data, 4);
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data |= EN_PROM_DATA;
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pci_write_config(dev, EN_TONGA, data, 4);
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pci_write_config(dev, EN_TONGA, t_data, 4);
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}
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#endif /* !MIDWAY_ADPONLY */
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static device_method_t en_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, en_pci_probe),
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DEVMETHOD(device_attach, en_pci_attach),
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DEVMETHOD(device_detach, en_pci_detach),
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DEVMETHOD(device_shutdown, en_pci_shutdown),
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{ 0, 0 }
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};
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static driver_t en_driver = {
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"en",
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en_methods,
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sizeof(struct en_pci_softc),
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};
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static devclass_t en_devclass;
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DRIVER_MODULE(if_en, pci, en_driver, en_devclass, 0, 0);
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