13c1f64b09
without Open Firmware: - The PCI data structure of some HME PROMs contains a non-zero interface revision in the class code. Thus remove the checks for matching class code and PCI data structure length and revsion. These were pretty much useless anyway as we only really need the pointer to the VPD which is located before the structure length and revision fields. - On Sun QFE (Quad FastEthernet) cards read the Nth MAC-address for the Nth HME controller instead of always the first one for all four HMEs. [1] - Improve the comment describing the used VPD format to better reflect reality. - Minor clean-up. Prodded by: joerg [1]
401 lines
12 KiB
C
401 lines
12 KiB
C
/*-
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* Copyright (c) 2000 Matthew R. Green
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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. 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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: NetBSD: if_hme_pci.c,v 1.14 2004/03/17 08:58:23 martin Exp
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* PCI front-end device driver for the HME ethernet device.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <machine/bus.h>
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#if defined(__powerpc__) || defined(__sparc64__)
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#include <dev/ofw/openfirm.h>
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#include <machine/ofw_machdep.h>
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#endif
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/hme/if_hmereg.h>
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#include <dev/hme/if_hmevar.h>
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#include "miibus_if.h"
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struct hme_pci_softc {
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struct hme_softc hsc_hme; /* HME device */
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struct resource *hsc_sres;
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int hsc_srid;
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struct resource *hsc_ires;
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int hsc_irid;
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bus_space_tag_t hsc_memt;
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bus_space_handle_t hsc_memh;
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void *hsc_ih;
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};
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static int hme_pci_probe(device_t);
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static int hme_pci_attach(device_t);
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static int hme_pci_detach(device_t);
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static int hme_pci_suspend(device_t);
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static int hme_pci_resume(device_t);
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static device_method_t hme_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, hme_pci_probe),
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DEVMETHOD(device_attach, hme_pci_attach),
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DEVMETHOD(device_detach, hme_pci_detach),
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DEVMETHOD(device_suspend, hme_pci_suspend),
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DEVMETHOD(device_resume, hme_pci_resume),
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/* Can just use the suspend method here. */
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DEVMETHOD(device_shutdown, hme_pci_suspend),
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/* bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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/* MII interface */
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DEVMETHOD(miibus_readreg, hme_mii_readreg),
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DEVMETHOD(miibus_writereg, hme_mii_writereg),
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DEVMETHOD(miibus_statchg, hme_mii_statchg),
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{ 0, 0 }
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};
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static driver_t hme_pci_driver = {
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"hme",
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hme_pci_methods,
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sizeof(struct hme_pci_softc)
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};
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DRIVER_MODULE(hme, pci, hme_pci_driver, hme_devclass, 0, 0);
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MODULE_DEPEND(hme, pci, 1, 1, 1);
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MODULE_DEPEND(hme, ether, 1, 1, 1);
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#define PCI_VENDOR_SUN 0x108e
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#define PCI_PRODUCT_SUN_EBUS 0x1000
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#define PCI_PRODUCT_SUN_HMENETWORK 0x1001
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int
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hme_pci_probe(device_t dev)
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{
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if (pci_get_vendor(dev) == PCI_VENDOR_SUN &&
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pci_get_device(dev) == PCI_PRODUCT_SUN_HMENETWORK) {
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device_set_desc(dev, "Sun HME 10/100 Ethernet");
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return (0);
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}
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return (ENXIO);
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}
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int
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hme_pci_attach(device_t dev)
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{
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struct hme_pci_softc *hsc = device_get_softc(dev);
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struct hme_softc *sc = &hsc->hsc_hme;
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int error = 0;
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#if !(defined(__powerpc__) || defined(__sparc64__))
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device_t *children, ebus_dev;
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struct resource *ebus_rres;
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bus_space_handle_t romh;
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bus_space_tag_t romt;
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int dataoff, ebus_rrid, slot, vpdoff;
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int i, nchildren;
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uint8_t buf[32];
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static const uint8_t promhdr[] = { 0x55, 0xaa };
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#define PROMHDR_PTR_DATA 0x18
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static const uint8_t promdat[] = {
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0x50, 0x43, 0x49, 0x52, /* "PCIR" */
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PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
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PCI_PRODUCT_SUN_HMENETWORK & 0xff,
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PCI_PRODUCT_SUN_HMENETWORK >> 8
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};
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#define PROMDATA_PTR_VPD 0x08
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struct pci_vpd {
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uint8_t vpd_key0;
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uint8_t vpd_key1;
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uint8_t vpd_len;
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} *vpd;
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#define PCI_VPDRES_ISLARGE(x) ((x) & 0x80)
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#define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f)
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#define PCI_VPDRES_TYPE_VPD 0x10 /* large */
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#endif
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pci_enable_busmaster(dev);
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/*
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* Some Sun HMEs do have their intpin register bogusly set to 0,
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* although it should be 1. correct that.
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*/
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if (pci_get_intpin(dev) == 0)
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pci_set_intpin(dev, 1);
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sc->sc_pci = 1;
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sc->sc_dev = dev;
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mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
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MTX_DEF);
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/*
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* Map five register banks:
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*
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* bank 0: HME SEB registers: +0x0000
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* bank 1: HME ETX registers: +0x2000
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* bank 2: HME ERX registers: +0x4000
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* bank 3: HME MAC registers: +0x6000
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* bank 4: HME MIF registers: +0x7000
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*
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*/
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hsc->hsc_srid = PCI_HME_BASEADDR;
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hsc->hsc_sres = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&hsc->hsc_srid, RF_ACTIVE);
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if (hsc->hsc_sres == NULL) {
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device_printf(dev, "could not map device registers\n");
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error = ENXIO;
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goto fail_mtx;
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}
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hsc->hsc_irid = 0;
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hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&hsc->hsc_irid, RF_SHAREABLE | RF_ACTIVE);
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if (hsc->hsc_ires == NULL) {
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device_printf(dev, "could not allocate interrupt\n");
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error = ENXIO;
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goto fail_sres;
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}
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hsc->hsc_memt = rman_get_bustag(hsc->hsc_sres);
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hsc->hsc_memh = rman_get_bushandle(hsc->hsc_sres);
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sc->sc_sebt = sc->sc_etxt = sc->sc_erxt = sc->sc_mact = sc->sc_mift =
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hsc->hsc_memt;
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bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x0000, 0x1000,
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&sc->sc_sebh);
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bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000, 0x1000,
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&sc->sc_etxh);
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bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 0x1000,
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&sc->sc_erxh);
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bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 0x1000,
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&sc->sc_mach);
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bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 0x1000,
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&sc->sc_mifh);
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#if defined(__powerpc__) || defined(__sparc64__)
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OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr);
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#else
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/*
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* Dig out VPD (vital product data) and read NA (network address).
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*
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* The PCI HME is a PCIO chip, which is composed of two functions:
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* function 0: PCI-EBus2 bridge, and
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* function 1: HappyMeal Ethernet controller.
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*
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* The VPD of HME resides in the Boot PROM (PCI FCode) attached
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* to the EBus bridge and can't be accessed via the PCI capability
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* pointer.
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* ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)
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* chapter 2 describes the data structure.
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*
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* We don't have a MI EBus driver since no EBus device exists
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* (besides the FCode PROM) on add-on HME boards. The ``no driver
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* attached'' message for function 0 therefore is what is expected.
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*/
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/* Search accompanying EBus bridge. */
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slot = pci_get_slot(dev);
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if (device_get_children(device_get_parent(dev), &children,
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&nchildren) != 0) {
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device_printf(dev, "could not get children\n");
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error = ENXIO;
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goto fail_sres;
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}
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ebus_dev = NULL;
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for (i = 0; i < nchildren; i++) {
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if (pci_get_class(children[i]) == PCIC_BRIDGE &&
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pci_get_vendor(children[i]) == PCI_VENDOR_SUN &&
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pci_get_device(children[i]) == PCI_PRODUCT_SUN_EBUS &&
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pci_get_slot(children[i]) == slot) {
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ebus_dev = children[i];
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break;
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}
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}
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if (ebus_dev == NULL) {
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device_printf(dev, "could not find EBus bridge\n");
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error = ENXIO;
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goto fail_children;
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}
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/* Map EBus bridge PROM registers. */
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#define PCI_EBUS2_BOOTROM 0x10
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ebus_rrid = PCI_EBUS2_BOOTROM;
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if ((ebus_rres = bus_alloc_resource_any(ebus_dev, SYS_RES_MEMORY,
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&ebus_rrid, RF_ACTIVE)) == NULL) {
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device_printf(dev, "could not map PROM registers\n");
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error = ENXIO;
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goto fail_children;
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}
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romt = rman_get_bustag(ebus_rres);
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romh = rman_get_bushandle(ebus_rres);
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/* Read PCI expansion PROM header. */
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bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
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if (memcmp(buf, promhdr, sizeof(promhdr)) != 0 ||
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(dataoff = (buf[PROMHDR_PTR_DATA] |
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(buf[PROMHDR_PTR_DATA + 1] << 8))) < 0x1c) {
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device_printf(dev, "unexpected PCI expansion PROM header\n");
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error = ENXIO;
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goto fail_rres;
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}
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/* Read PCI expansion PROM data. */
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bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
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if (memcmp(buf, promdat, sizeof(promdat)) != 0 ||
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(vpdoff = (buf[PROMDATA_PTR_VPD] |
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(buf[PROMDATA_PTR_VPD + 1] << 8))) < 0x1c) {
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device_printf(dev, "unexpected PCI expansion PROM data\n");
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error = ENXIO;
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goto fail_rres;
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}
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/*
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* Read PCI VPD.
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* SUNW,hme cards have a single large resource VPD-R tag
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* containing one NA. SUNW,qfe cards have four large resource
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* VPD-R tags containing one NA each.
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* The VPD used on both cards is not in PCI 2.2 standard format
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* however. The length in the resource header is in big endian
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* and the end tag is non-standard (0x79) and followed by an
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* all-zero "checksum" byte. Sun calls this a "Fresh Choice
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* Ethernet" VPD...
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*/
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bus_space_read_region_1(romt, romh,
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vpdoff + slot * (3 + sizeof(struct pci_vpd) + ETHER_ADDR_LEN),
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buf, sizeof(buf));
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vpd = (void *)(buf + 3);
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if (PCI_VPDRES_ISLARGE(buf[0]) == 0 ||
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PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD ||
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(buf[1] << 8 | buf[2]) != sizeof(struct pci_vpd) + ETHER_ADDR_LEN ||
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vpd->vpd_key0 != 0x4e /* N */ ||
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vpd->vpd_key1 != 0x41 /* A */ ||
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vpd->vpd_len != ETHER_ADDR_LEN) {
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device_printf(dev, "unexpected PCI VPD\n");
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error = ENXIO;
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goto fail_rres;
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}
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if (buf + 3 + sizeof(struct pci_vpd) == NULL) {
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device_printf(dev, "could not read network address\n");
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error = ENXIO;
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goto fail_rres;
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}
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bcopy(buf + 3 + sizeof(struct pci_vpd), sc->sc_arpcom.ac_enaddr,
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ETHER_ADDR_LEN);
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fail_rres:
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bus_release_resource(ebus_dev, SYS_RES_MEMORY, ebus_rrid, ebus_rres);
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fail_children:
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free(children, M_TEMP);
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if (error != 0)
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goto fail_sres;
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#endif
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sc->sc_burst = 64; /* XXX */
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/*
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* call the main configure
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*/
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if ((error = hme_config(sc)) != 0) {
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device_printf(dev, "could not be configured\n");
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goto fail_ires;
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}
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if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET |
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INTR_MPSAFE, hme_intr, sc, &hsc->hsc_ih)) != 0) {
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device_printf(dev, "couldn't establish interrupt\n");
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hme_detach(sc);
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goto fail_ires;
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}
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return (0);
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fail_ires:
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bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires);
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fail_sres:
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bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, hsc->hsc_sres);
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fail_mtx:
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mtx_destroy(&sc->sc_lock);
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return (error);
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}
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static int
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hme_pci_detach(device_t dev)
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{
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struct hme_pci_softc *hsc = device_get_softc(dev);
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struct hme_softc *sc = &hsc->hsc_hme;
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bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
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hme_detach(sc);
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bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires);
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bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, hsc->hsc_sres);
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return (0);
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}
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static int
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hme_pci_suspend(device_t dev)
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{
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struct hme_pci_softc *hsc = device_get_softc(dev);
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struct hme_softc *sc = &hsc->hsc_hme;
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hme_suspend(sc);
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return (0);
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}
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static int
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hme_pci_resume(device_t dev)
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{
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struct hme_pci_softc *hsc = device_get_softc(dev);
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struct hme_softc *sc = &hsc->hsc_hme;
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hme_resume(sc);
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return (0);
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}
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