/* $OpenBSD: if_hme_pci.c,v 1.9 2005/10/21 22:10:56 brad Exp $ */ /* $NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $ */ /* * Copyright (c) 2000 Matthew R. Green * 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. 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. */ /* * PCI front-end device driver for the HME ethernet device. */ #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #include #include #ifdef __sparc64__ #include #include #endif #include #include #include #include #include struct hme_pci_softc { struct hme_softc hsc_hme; /* HME device */ bus_space_tag_t hsc_memt; bus_space_handle_t hsc_memh; void *hsc_ih; }; int hmematch_pci(struct device *, void *, void *); void hmeattach_pci(struct device *, struct device *, void *); int hme_pci_enaddr(struct hme_softc *, struct pci_attach_args *); struct cfattach hme_pci_ca = { sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci }; int hmematch_pci(parent, vcf, aux) struct device *parent; void *vcf; void *aux; { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HME) return (1); return (0); } #define PCI_EBUS2_BOOTROM 0x10 #define PROMHDR_PTR_DATA 0x18 #define PROMDATA_PTR_VPD 0x08 #define PROMDATA_DATA2 0x0a static const u_int8_t hme_promhdr[] = { 0x55, 0xaa }; static const u_int8_t hme_promdat[] = { 'P', 'C', 'I', 'R', PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, PCI_PRODUCT_SUN_HME & 0xff, PCI_PRODUCT_SUN_HME >> 8 }; static const u_int8_t hme_promdat2[] = { 0x18, 0x00, /* structure length */ 0x00, /* structure revision */ 0x00, /* interface revision */ PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */ PCI_CLASS_NETWORK /* class code */ }; int hme_pci_enaddr(struct hme_softc *sc, struct pci_attach_args *hpa) { struct pci_attach_args epa; struct pci_vpd *vpd; pcireg_t cl, id; bus_space_handle_t romh; bus_space_tag_t romt; bus_size_t romsize = 0; u_int8_t buf[32]; int dataoff, vpdoff; /* * Dig out VPD (vital product data) and acquire Ethernet address. * The VPD of hme resides in the Boot PROM (PCI FCode) attached * to the EBus interface. * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) * chapter 2 describes the data structure. */ /* get a PCI tag for the EBus bridge (function 0 of the same device) */ epa = *hpa; epa.pa_tag = pci_make_tag(hpa->pa_pc, hpa->pa_bus, hpa->pa_device, 0); cl = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_CLASS_REG); id = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_ID_REG); if (PCI_CLASS(cl) != PCI_CLASS_BRIDGE || PCI_PRODUCT(id) != PCI_PRODUCT_SUN_EBUS) goto fail; if (pci_mapreg_map(&epa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 0, &romt, &romh, 0, &romsize, 0)) goto fail; bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf)); if (bcmp(buf, hme_promhdr, sizeof(hme_promhdr))) goto fail; dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8); if (dataoff < 0x1c) goto fail; bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf)); if (bcmp(buf, hme_promdat, sizeof(hme_promdat)) || bcmp(buf + PROMDATA_DATA2, hme_promdat2, sizeof(hme_promdat2))) goto fail; vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8); if (vpdoff < 0x1c) goto fail; /* * The VPD of hme is not in PCI 2.2 standard format. The length * in the resource header is in big endian, and resources are not * properly terminated (only one resource and no end tag). */ bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf)); /* XXX TODO: Get the data from VPD */ vpd = (struct pci_vpd *)(buf + 3); if (!PCI_VPDRES_ISLARGE(buf[0]) || PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD) goto fail; if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A') goto fail; bcopy(buf + 6, sc->sc_enaddr, ETHER_ADDR_LEN); sc->sc_enaddr[5] += hpa->pa_device; bus_space_unmap(romt, romh, romsize); return (0); fail: if (romsize != 0) bus_space_unmap(romt, romh, romsize); return (-1); } void hmeattach_pci(parent, self, aux) struct device *parent, *self; void *aux; { struct pci_attach_args *pa = aux; struct hme_pci_softc *hsc = (void *)self; struct hme_softc *sc = &hsc->hsc_hme; pci_intr_handle_t intrhandle; /* XXX the following declarations should be elsewhere */ extern void myetheraddr(u_char *); pcireg_t csr; const char *intrstr; int type, gotenaddr = 0; /* * enable io/memory-space accesses. this is kinda of gross; but * the hme comes up with neither IO space enabled, or memory space. */ if (pa->pa_memt) pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; if (pa->pa_iot) pa->pa_flags |= PCI_FLAGS_IO_ENABLED; csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); if (pa->pa_memt) { type = PCI_MAPREG_TYPE_MEM; csr |= PCI_COMMAND_MEM_ENABLE; sc->sc_bustag = pa->pa_memt; } else { type = PCI_MAPREG_TYPE_IO; csr |= PCI_COMMAND_IO_ENABLE; sc->sc_bustag = pa->pa_iot; } pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr | PCI_COMMAND_MEM_ENABLE); sc->sc_dmatag = pa->pa_dmat; sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ /* * Map five register banks: * * bank 0: HME SEB registers: +0x0000 * bank 1: HME ETX registers: +0x2000 * bank 2: HME ERX registers: +0x4000 * bank 3: HME MAC registers: +0x6000 * bank 4: HME MIF registers: +0x7000 * */ #define PCI_HME_BASEADDR 0x10 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL, 0) != 0) { printf(": could not map hme registers\n"); return; } sc->sc_seb = hsc->hsc_memh; bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x2000, 0x2000, &sc->sc_etx); bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x4000, 0x2000, &sc->sc_erx); bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x6000, 0x1000, &sc->sc_mac); bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x7000, 0x1000, &sc->sc_mif); if (hme_pci_enaddr(sc, pa) == 0) gotenaddr = 1; #ifdef __sparc__ if (!gotenaddr) { if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address", sc->sc_enaddr, ETHER_ADDR_LEN) <= 0) myetheraddr(sc->sc_enaddr); gotenaddr = 1; } #endif #ifdef __powerpc__ if (!gotenaddr) { pci_ether_hw_addr(pa->pa_pc, sc->sc_enaddr); gotenaddr = 1; } #endif sc->sc_burst = 16; /* XXX */ if (pci_intr_map(pa, &intrhandle) != 0) { printf(": couldn't map interrupt\n"); return; /* bus_unmap ? */ } intrstr = pci_intr_string(pa->pa_pc, intrhandle); hsc->hsc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET, hme_intr, sc, self->dv_xname); if (hsc->hsc_ih != NULL) { printf(": %s", intrstr ? intrstr : "unknown interrupt"); } else { printf(": couldn't establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; /* bus_unmap ? */ } /* * call the main configure */ hme_config(sc); }