diff options
| -rw-r--r-- | sys/dev/hme/if_hme_pci.c | 155 |
1 files changed, 152 insertions, 3 deletions
diff --git a/sys/dev/hme/if_hme_pci.c b/sys/dev/hme/if_hme_pci.c index 419f554..fc203a9 100644 --- a/sys/dev/hme/if_hme_pci.c +++ b/sys/dev/hme/if_hme_pci.c @@ -25,7 +25,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * from: NetBSD: if_hme_pci.c,v 1.7 2001/10/05 17:49:43 thorpej Exp + * from: NetBSD: if_hme_pci.c,v 1.14 2004/03/17 08:58:23 martin Exp */ #include <sys/cdefs.h> @@ -44,8 +44,10 @@ __FBSDID("$FreeBSD$"); #include <sys/socket.h> #include <machine/bus.h> +#if defined(__powerpc__) || defined(__sparc64__) #include <dev/ofw/openfirm.h> #include <machine/ofw_machdep.h> +#endif #include <machine/resource.h> #include <sys/rman.h> @@ -116,12 +118,16 @@ DRIVER_MODULE(hme, pci, hme_pci_driver, hme_devclass, 0, 0); MODULE_DEPEND(hme, pci, 1, 1, 1); MODULE_DEPEND(hme, ether, 1, 1, 1); +#define PCI_VENDOR_SUN 0x108e +#define PCI_PRODUCT_SUN_EBUS 0x1000 +#define PCI_PRODUCT_SUN_HMENETWORK 0x1001 + int hme_pci_probe(device_t dev) { - if (pci_get_vendor(dev) == 0x108e && - pci_get_device(dev) == 0x1001) { + if (pci_get_vendor(dev) == PCI_VENDOR_SUN && + pci_get_device(dev) == PCI_PRODUCT_SUN_HMENETWORK) { device_set_desc(dev, "Sun HME 10/100 Ethernet"); return (0); } @@ -134,6 +140,40 @@ hme_pci_attach(device_t dev) struct hme_pci_softc *hsc = device_get_softc(dev); struct hme_softc *sc = &hsc->hsc_hme; int error = 0; +#if !(defined(__powerpc__) || defined(__sparc64__)) + device_t *children, ebus_dev; + struct resource *ebus_rres; + bus_space_handle_t romh; + bus_space_tag_t romt; + int dataoff, ebus_rrid, slot, vpdoff; + int i, nchildren; + uint8_t buf[32]; + static const uint8_t promhdr[] = { 0x55, 0xaa }; +#define PROMHDR_PTR_DATA 0x18 + static const uint8_t promdat[] = { + 0x50, 0x43, 0x49, 0x52, /* "PCIR" */ + PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, + PCI_PRODUCT_SUN_HMENETWORK & 0xff, + PCI_PRODUCT_SUN_HMENETWORK >> 8 + }; +#define PROMDATA_PTR_VPD 0x08 +#define PROMDATA_DATA2 0x0a + static const uint8_t promdat2[] = { + 0x18, 0x00, /* structure length */ + 0x00, /* structure revision */ + 0x00, /* interface revision */ + PCIS_NETWORK_ETHERNET, /* subclass code */ + PCIC_NETWORK /* class code */ + }; +#define PCI_VPDRES_ISLARGE(x) ((x) & 0x80) +#define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f) +#define PCI_VPDRES_TYPE_VPD 0x10 /* large */ + struct pci_vpd { + uint8_t vpd_key0; + uint8_t vpd_key1; + uint8_t vpd_len; + } *vpd; +#endif pci_enable_busmaster(dev); /* @@ -186,7 +226,116 @@ hme_pci_attach(device_t dev) bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 0x1000, &sc->sc_mifh); +#if defined(__powerpc__) || defined(__sparc64__) OF_getetheraddr(dev, sc->sc_arpcom.ac_enaddr); +#else + /* + * Dig out VPD (vital product data) and read NA (network address). + * + * 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 VPD of HME resides in the Boot PROM (PCI FCode) attached + * to the EBus bridge and can't be accessed via the PCI capability + * pointer. + * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) + * chapter 2 describes the data structure. + * + * We don't have a MI EBus driver since no EBus device exists + * (besides the FCode PROM) on add-on HME boards. The ``no driver + * attached'' message for function 0 therefore is what is expected. + */ + + /* Search accompanying EBus bridge. */ + slot = pci_get_slot(dev); + if (device_get_children(device_get_parent(dev), &children, + &nchildren) != 0) { + device_printf(dev, "could not get children\n"); + error = ENXIO; + goto fail_sres; + } + ebus_dev = NULL; + for (i = 0; i < nchildren; i++) { + if (pci_get_class(children[i]) == PCIC_BRIDGE && + pci_get_vendor(children[i]) == PCI_VENDOR_SUN && + pci_get_device(children[i]) == PCI_PRODUCT_SUN_EBUS && + pci_get_slot(children[i]) == slot) { + ebus_dev = children[i]; + break; + } + } + if (ebus_dev == NULL) { + device_printf(dev, "could not find EBus bridge\n"); + error = ENXIO; + goto fail_children; + } + + /* Map EBus bridge PROM registers. */ +#define PCI_EBUS2_BOOTROM 0x10 + ebus_rrid = PCI_EBUS2_BOOTROM; + if ((ebus_rres = bus_alloc_resource_any(ebus_dev, SYS_RES_MEMORY, + &ebus_rrid, RF_ACTIVE)) == NULL) { + device_printf(dev, "could not map PROM registers\n"); + error = ENXIO; + goto fail_children; + } + romt = rman_get_bustag(ebus_rres); + romh = rman_get_bushandle(ebus_rres); + + /* Read PCI expansion PROM header. */ + bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf)); + if (memcmp(buf, promhdr, sizeof(promhdr)) != 0 || + (dataoff = (buf[PROMHDR_PTR_DATA] | + (buf[PROMHDR_PTR_DATA + 1] << 8))) < 0x1c) { + device_printf(dev, "unexpected PCI expansion PROM header\n"); + error = ENXIO; + goto fail_rres; + } + + /* Read PCI expansion PROM data. */ + bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf)); + if (memcmp(buf, promdat, sizeof(promdat)) != 0 || + memcmp(buf + PROMDATA_DATA2, promdat2, sizeof(promdat2)) != 0 || + (vpdoff = (buf[PROMDATA_PTR_VPD] | + (buf[PROMDATA_PTR_VPD + 1] << 8))) < 0x1c) { + device_printf(dev, "unexpected PCI expansion PROM data\n"); + error = ENXIO; + goto fail_rres; + } + + /* + * Read PCI VPD. + * 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)); + vpd = (void *)(buf + 3); + if (PCI_VPDRES_ISLARGE(buf[0]) == 0 || + PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD || + /* buf[1] != 0 || buf[2] != 9 || */ /*len*/ + vpd->vpd_key0 != 0x4e /* N */ || + vpd->vpd_key1 != 0x41 /* A */ || + vpd->vpd_len != ETHER_ADDR_LEN) { + device_printf(dev, "unexpected PCI VPD\n"); + error = ENXIO; + goto fail_rres; + } + if (buf + 6 == NULL) { + device_printf(dev, "could not read network address\n"); + error = ENXIO; + goto fail_rres; + } + bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); + +fail_rres: + bus_release_resource(ebus_dev, SYS_RES_MEMORY, ebus_rrid, ebus_rres); +fail_children: + free(children, M_TEMP); + if (error != 0) + goto fail_sres; +#endif sc->sc_burst = 64; /* XXX */ |
