diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ppc/platforms/4xx/bamboo.c | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/arch/ppc/platforms/4xx/bamboo.c b/arch/ppc/platforms/4xx/bamboo.c index f116787b0b7..05e2824db71 100644 --- a/arch/ppc/platforms/4xx/bamboo.c +++ b/arch/ppc/platforms/4xx/bamboo.c @@ -123,33 +123,69 @@ bamboo_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) static void __init bamboo_set_emacdata(void) { - unsigned char * selection1_base; + u8 * base_addr; struct ocp_def *def; struct ocp_func_emac_data *emacdata; - u8 selection1_val; + u8 val; int mode; + u32 excluded = 0; - selection1_base = ioremap64(BAMBOO_FPGA_SELECTION1_REG_ADDR, 16); - selection1_val = readb(selection1_base); - iounmap((void *) selection1_base); - if (BAMBOO_SEL_MII(selection1_val)) + base_addr = ioremap64(BAMBOO_FPGA_SELECTION1_REG_ADDR, 16); + val = readb(base_addr); + iounmap((void *) base_addr); + if (BAMBOO_SEL_MII(val)) mode = PHY_MODE_MII; - else if (BAMBOO_SEL_RMII(selection1_val)) + else if (BAMBOO_SEL_RMII(val)) mode = PHY_MODE_RMII; else mode = PHY_MODE_SMII; - /* Set mac_addr and phy mode for each EMAC */ + /* + * SW2 on the Bamboo is used for ethernet configuration and is accessed + * via the CONFIG2 register in the FPGA. If the ANEG pin is set, + * overwrite the supported features with the settings in SW2. + * + * This is used as a workaround for the improperly biased RJ-45 sockets + * on the Rev. 0 Bamboo. By default only 10baseT is functional. + * Removing inductors L17 and L18 from the board allows 100baseT, but + * disables 10baseT. The Rev. 1 has no such limitations. + */ + + base_addr = ioremap64(BAMBOO_FPGA_CONFIG2_REG_ADDR, 8); + val = readb(base_addr); + iounmap((void *) base_addr); + if (!BAMBOO_AUTONEGOTIATE(val)) { + excluded |= SUPPORTED_Autoneg; + if (BAMBOO_FORCE_100Mbps(val)) { + excluded |= SUPPORTED_10baseT_Full; + excluded |= SUPPORTED_10baseT_Half; + if (BAMBOO_FULL_DUPLEX_EN(val)) + excluded |= SUPPORTED_100baseT_Half; + else + excluded |= SUPPORTED_100baseT_Full; + } else { + excluded |= SUPPORTED_100baseT_Full; + excluded |= SUPPORTED_100baseT_Half; + if (BAMBOO_FULL_DUPLEX_EN(val)) + excluded |= SUPPORTED_10baseT_Half; + else + excluded |= SUPPORTED_10baseT_Full; + } + } + + /* Set mac_addr, phy mode and unsupported phy features for each EMAC */ def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0); emacdata = def->additions; memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6); emacdata->phy_mode = mode; + emacdata->phy_feat_exc = excluded; def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1); emacdata = def->additions; memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6); emacdata->phy_mode = mode; + emacdata->phy_feat_exc = excluded; } static int |