diff options
| -rw-r--r-- | sys/dev/pci/if_hme_pci.c | 119 |
1 files changed, 112 insertions, 7 deletions
diff --git a/sys/dev/pci/if_hme_pci.c b/sys/dev/pci/if_hme_pci.c index 215586a9046..55b8cadc7b0 100644 --- a/sys/dev/pci/if_hme_pci.c +++ b/sys/dev/pci/if_hme_pci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_hme_pci.c,v 1.6 2002/03/14 01:26:58 millert Exp $ */ +/* $OpenBSD: if_hme_pci.c,v 1.7 2003/02/10 22:31:01 jason Exp $ */ /* $NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $ */ /* @@ -76,6 +76,7 @@ struct hme_pci_softc { 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 @@ -96,6 +97,102 @@ hmematch_pci(parent, vcf, aux) 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; @@ -109,7 +206,7 @@ hmeattach_pci(parent, self, aux) extern void myetheraddr(u_char *); pcireg_t csr; const char *intrstr; - int type; + int type, gotenaddr = 0; /* * enable io/memory-space accesses. this is kinda of gross; but @@ -148,8 +245,7 @@ hmeattach_pci(parent, self, aux) #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) - { + &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL, 0) != 0) { printf(": could not map hme registers\n"); return; } @@ -159,13 +255,22 @@ hmeattach_pci(parent, self, aux) sc->sc_mac = hsc->hsc_memh + 0x6000; sc->sc_mif = hsc->hsc_memh + 0x7000; + if (hme_pci_enaddr(sc, pa) == 0) + gotenaddr = 1; + #ifdef __sparc__ - if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address", - sc->sc_enaddr, ETHER_ADDR_LEN) <= 0) + 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__ - pci_ether_hw_addr(pa->pa_pc, sc->sc_enaddr); + if (!gotenaddr) { + pci_ether_hw_addr(pa->pa_pc, sc->sc_enaddr); + gotenaddr = 1; + } #endif |