ca7d3d53d6
and avoid using MD myetheraddr() function. This makes the driver MI, and closes PR kern/13797. The PCI HME is a PCIO chip, which is composed of two functions: function 0: PCI-EBus2 bridge, and function 1: HappyMeal Ethernet controller. The Ethernet address is (expected to be) in the PCI FCode PROM connected to the EBus bridge (function 0) of the device. Since the HME is on function 1, some magic is used to access to the PROM. We don't have MI EBus driver since no EBus device exists (besides the FCode PROM) on add-on HME boards. The ``not configured'' message for function 0 is what is expected. The SPARC case is currently unchanged. It needs interaction with OpenBoot.
318 lines
9.2 KiB
C
318 lines
9.2 KiB
C
/* $NetBSD: if_hme_pci.c,v 1.13 2002/12/26 22:59:51 itohy Exp $ */
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/*
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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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/*
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* PCI front-end device driver for the HME ethernet device.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_hme_pci.c,v 1.13 2002/12/26 22:59:51 itohy Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.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 <machine/intr.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/pci/pcidevs.h>
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#include <dev/ic/hmevar.h>
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#ifndef HME_USE_LOCAL_MAC_ADDRESS
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#ifdef __sparc__
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#define HME_USE_LOCAL_MAC_ADDRESS 0 /* use system-wide address */
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#else
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#define HME_USE_LOCAL_MAC_ADDRESS 1
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#endif
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#endif
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struct hme_pci_softc {
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struct hme_softc hsc_hme; /* HME device */
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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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int hmematch_pci __P((struct device *, struct cfdata *, void *));
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void hmeattach_pci __P((struct device *, struct device *, void *));
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CFATTACH_DECL(hme_pci, sizeof(struct hme_pci_softc),
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hmematch_pci, hmeattach_pci, NULL, NULL);
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int
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hmematch_pci(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK)
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return (1);
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return (0);
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}
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void
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hmeattach_pci(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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struct hme_pci_softc *hsc = (void *)self;
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struct hme_softc *sc = &hsc->hsc_hme;
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pci_intr_handle_t ih;
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pcireg_t csr;
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const char *intrstr;
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int type;
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#if HME_USE_LOCAL_MAC_ADDRESS
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struct pci_attach_args ebus_pa;
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pcireg_t ebus_cl, ebus_id;
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u_int8_t *enaddr;
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bus_space_tag_t romt;
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bus_space_handle_t romh;
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bus_size_t romsize;
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u_int8_t buf[32];
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int dataoff, vpdoff;
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struct pci_vpd *vpd;
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static const u_int8_t promhdr[] = { 0x55, 0xaa };
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#define PROMHDR_PTR_DATA 0x18
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static const u_int8_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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#define PROMDATA_DATA2 0x0a
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static const u_int8_t promdat2[] = {
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0x18, 0x00, /* structure length */
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0x00, /* structure revision */
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0x00, /* interface revision */
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PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */
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PCI_CLASS_NETWORK /* class code */
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};
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#endif /* HME_USE_LOCAL_MAC_ADDRESS */
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#ifdef __sparc__
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/* XXX the following declarations should be elsewhere */
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extern void myetheraddr __P((u_char *));
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#endif
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printf(": Sun Happy Meal Ethernet, rev. %d\n",
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PCI_REVISION(pa->pa_class));
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/*
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* enable io/memory-space accesses. this is kinda of gross; but
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# the hme comes up with neither IO space enabled, or memory space.
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*/
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if (pa->pa_memt)
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pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
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if (pa->pa_iot)
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pa->pa_flags |= PCI_FLAGS_IO_ENABLED;
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csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
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if (pa->pa_memt) {
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type = PCI_MAPREG_TYPE_MEM;
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csr |= PCI_COMMAND_MEM_ENABLE;
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sc->sc_bustag = pa->pa_memt;
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} else {
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type = PCI_MAPREG_TYPE_IO;
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csr |= PCI_COMMAND_IO_ENABLE;
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sc->sc_bustag = pa->pa_iot;
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}
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MEM_ENABLE);
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sc->sc_dmatag = pa->pa_dmat;
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sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
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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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#define PCI_HME_BASEADDR 0x10
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if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0,
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&hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0)
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{
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printf("%s: unable to map device registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_seb = hsc->hsc_memh;
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if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000,
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0x1000, &sc->sc_etx)) {
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printf("%s: unable to subregion ETX registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000,
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0x1000, &sc->sc_erx)) {
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printf("%s: unable to subregion ERX registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000,
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0x1000, &sc->sc_mac)) {
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printf("%s: unable to subregion MAC registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000,
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0x1000, &sc->sc_mif)) {
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printf("%s: unable to subregion MIF registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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#if HME_USE_LOCAL_MAC_ADDRESS
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/*
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* Dig out VPD (vital product data) and acquire Ethernet address.
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* The VPD of hme resides in the Boot PROM (PCI FCode) attached
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* to the EBus interface.
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*/
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/*
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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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enaddr = NULL;
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/* get a PCI tag for the EBus bridge (function 0 of the same device) */
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ebus_pa = *pa;
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ebus_pa.pa_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
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ebus_cl = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_CLASS_REG);
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ebus_id = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_ID_REG);
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#define PCI_EBUS2_BOOTROM 0x10
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if (PCI_CLASS(ebus_cl) == PCI_CLASS_BRIDGE &&
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PCI_PRODUCT(ebus_id) == PCI_PRODUCT_SUN_EBUS &&
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pci_mapreg_map(&ebus_pa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM,
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BUS_SPACE_MAP_CACHEABLE | BUS_SPACE_MAP_PREFETCHABLE,
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&romt, &romh, 0, &romsize) == 0) {
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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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/* read PCI Expansion PROM Data */
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bus_space_read_region_1(romt, romh, dataoff,
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buf, sizeof buf);
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if (memcmp(buf, promdat, sizeof promdat) == 0 &&
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memcmp(buf + PROMDATA_DATA2, promdat2,
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sizeof promdat2) == 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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/*
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* The VPD of hme is not in PCI 2.2 standard
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* format. The length in the resource header
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* is in big endian, and resources are not
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* properly terminated (only one resource
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* and no end tag).
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*/
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/* read PCI VPD */
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bus_space_read_region_1(romt, romh,
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vpdoff, buf, sizeof buf);
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vpd = (void *)(buf + 3);
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if (PCI_VPDRES_ISLARGE(buf[0]) &&
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PCI_VPDRES_LARGE_NAME(buf[0])
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== PCI_VPDRES_TYPE_VPD &&
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/* buf[1] == 0 && buf[2] == 9 && */ /*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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/*
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* Ethernet address found
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*/
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enaddr = buf + 6;
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}
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}
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}
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bus_space_unmap(romt, romh, romsize);
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}
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if (enaddr)
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memcpy(sc->sc_enaddr, enaddr, ETHER_ADDR_LEN);
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else
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#endif /* HME_USE_LOCAL_MAC_ADDRESS */
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#ifdef __sparc__
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myetheraddr(sc->sc_enaddr);
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#else
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printf("%s: no Ethernet address found\n", sc->sc_dev.dv_xname);
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#endif
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/*
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* Map and establish our interrupt.
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*/
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if (pci_intr_map(pa, &ih) != 0) {
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printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname);
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return;
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}
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intrstr = pci_intr_string(pa->pa_pc, ih);
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hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, hme_intr, sc);
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if (hsc->hsc_ih == NULL) {
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printf("%s: unable to establish interrupt",
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sc->sc_dev.dv_xname);
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
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sc->sc_burst = 16; /* XXX */
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/* Finish off the attach. */
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hme_config(sc);
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}
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