diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bgmac-bcma.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bgmac-bcma.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bgmac-bcma.c b/drivers/net/ethernet/broadcom/bgmac-bcma.c new file mode 100644 index 000000000..6e4f36aaf --- /dev/null +++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c @@ -0,0 +1,365 @@ +/* + * Driver for (BCM4706)? GBit MAC core on BCMA bus. + * + * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com> + * + * Licensed under the GNU/GPL. See COPYING for details. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/bcma/bcma.h> +#include <linux/brcmphy.h> +#include <linux/etherdevice.h> +#include <linux/of_mdio.h> +#include <linux/of_net.h> +#include "bgmac.h" + +static inline bool bgmac_is_bcm4707_family(struct bcma_device *core) +{ + switch (core->bus->chipinfo.id) { + case BCMA_CHIP_ID_BCM4707: + case BCMA_CHIP_ID_BCM47094: + case BCMA_CHIP_ID_BCM53018: + return true; + default: + return false; + } +} + +/************************************************** + * BCMA bus ops + **************************************************/ + +static u32 bcma_bgmac_read(struct bgmac *bgmac, u16 offset) +{ + return bcma_read32(bgmac->bcma.core, offset); +} + +static void bcma_bgmac_write(struct bgmac *bgmac, u16 offset, u32 value) +{ + bcma_write32(bgmac->bcma.core, offset, value); +} + +static u32 bcma_bgmac_idm_read(struct bgmac *bgmac, u16 offset) +{ + return bcma_aread32(bgmac->bcma.core, offset); +} + +static void bcma_bgmac_idm_write(struct bgmac *bgmac, u16 offset, u32 value) +{ + return bcma_awrite32(bgmac->bcma.core, offset, value); +} + +static bool bcma_bgmac_clk_enabled(struct bgmac *bgmac) +{ + return bcma_core_is_enabled(bgmac->bcma.core); +} + +static void bcma_bgmac_clk_enable(struct bgmac *bgmac, u32 flags) +{ + bcma_core_enable(bgmac->bcma.core, flags); +} + +static void bcma_bgmac_cco_ctl_maskset(struct bgmac *bgmac, u32 offset, + u32 mask, u32 set) +{ + struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc; + + bcma_chipco_chipctl_maskset(cc, offset, mask, set); +} + +static u32 bcma_bgmac_get_bus_clock(struct bgmac *bgmac) +{ + struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc; + + return bcma_pmu_get_bus_clock(cc); +} + +static void bcma_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset, u32 mask, + u32 set) +{ + bcma_maskset32(bgmac->bcma.cmn, offset, mask, set); +} + +static int bcma_phy_connect(struct bgmac *bgmac) +{ + struct phy_device *phy_dev; + char bus_id[MII_BUS_ID_SIZE + 3]; + + /* DT info should be the most accurate */ + phy_dev = of_phy_get_and_connect(bgmac->net_dev, bgmac->dev->of_node, + bgmac_adjust_link); + if (phy_dev) + return 0; + + /* Connect to the PHY */ + if (bgmac->mii_bus && bgmac->phyaddr != BGMAC_PHY_NOREGS) { + snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id, + bgmac->phyaddr); + phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link, + PHY_INTERFACE_MODE_MII); + if (IS_ERR(phy_dev)) { + dev_err(bgmac->dev, "PHY connection failed\n"); + return PTR_ERR(phy_dev); + } + + return 0; + } + + /* Assume a fixed link to the switch port */ + return bgmac_phy_connect_direct(bgmac); +} + +static const struct bcma_device_id bgmac_bcma_tbl[] = { + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, + BCMA_ANY_REV, BCMA_ANY_CLASS), + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV, + BCMA_ANY_CLASS), + {}, +}; +MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl); + +/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */ +static int bgmac_probe(struct bcma_device *core) +{ + struct bcma_chipinfo *ci = &core->bus->chipinfo; + struct ssb_sprom *sprom = &core->bus->sprom; + struct mii_bus *mii_bus; + struct bgmac *bgmac; + const u8 *mac; + int err; + + bgmac = bgmac_alloc(&core->dev); + if (!bgmac) + return -ENOMEM; + + bgmac->bcma.core = core; + bgmac->dma_dev = core->dma_dev; + bgmac->irq = core->irq; + + bcma_set_drvdata(core, bgmac); + + err = of_get_ethdev_address(bgmac->dev->of_node, bgmac->net_dev); + if (err == -EPROBE_DEFER) + return err; + + /* If no MAC address assigned via device tree, check SPROM */ + if (err) { + switch (core->core_unit) { + case 0: + mac = sprom->et0mac; + break; + case 1: + mac = sprom->et1mac; + break; + case 2: + mac = sprom->et2mac; + break; + default: + dev_err(bgmac->dev, "Unsupported core_unit %d\n", + core->core_unit); + err = -ENOTSUPP; + goto err; + } + eth_hw_addr_set(bgmac->net_dev, mac); + } + + /* On BCM4706 we need common core to access PHY */ + if (core->id.id == BCMA_CORE_4706_MAC_GBIT && + !core->bus->drv_gmac_cmn.core) { + dev_err(bgmac->dev, "GMAC CMN core not found (required for BCM4706)\n"); + err = -ENODEV; + goto err; + } + bgmac->bcma.cmn = core->bus->drv_gmac_cmn.core; + + switch (core->core_unit) { + case 0: + bgmac->phyaddr = sprom->et0phyaddr; + break; + case 1: + bgmac->phyaddr = sprom->et1phyaddr; + break; + case 2: + bgmac->phyaddr = sprom->et2phyaddr; + break; + } + bgmac->phyaddr &= BGMAC_PHY_MASK; + if (bgmac->phyaddr == BGMAC_PHY_MASK) { + dev_err(bgmac->dev, "No PHY found\n"); + err = -ENODEV; + goto err; + } + dev_info(bgmac->dev, "Found PHY addr: %d%s\n", bgmac->phyaddr, + bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : ""); + + if (!bgmac_is_bcm4707_family(core) && + !(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) { + struct phy_device *phydev; + + mii_bus = bcma_mdio_mii_register(bgmac); + if (IS_ERR(mii_bus)) { + err = PTR_ERR(mii_bus); + goto err; + } + bgmac->mii_bus = mii_bus; + + phydev = mdiobus_get_phy(bgmac->mii_bus, bgmac->phyaddr); + if (ci->id == BCMA_CHIP_ID_BCM53573 && phydev && + (phydev->drv->phy_id & phydev->drv->phy_id_mask) == PHY_ID_BCM54210E) + phydev->dev_flags |= PHY_BRCM_EN_MASTER_MODE; + } + + if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) { + dev_err(bgmac->dev, "PCI setup not implemented\n"); + err = -ENOTSUPP; + goto err1; + } + + bgmac->has_robosw = !!(sprom->boardflags_lo & BGMAC_BFL_ENETROBO); + if (bgmac->has_robosw) + dev_warn(bgmac->dev, "Support for Roboswitch not implemented\n"); + + if (sprom->boardflags_lo & BGMAC_BFL_ENETADM) + dev_warn(bgmac->dev, "Support for ADMtek ethernet switch not implemented\n"); + + /* Feature Flags */ + switch (ci->id) { + /* BCM 471X/535X family */ + case BCMA_CHIP_ID_BCM4716: + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + fallthrough; + case BCMA_CHIP_ID_BCM47162: + bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL2; + bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK; + break; + case BCMA_CHIP_ID_BCM5357: + case BCMA_CHIP_ID_BCM53572: + bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK; + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1; + bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY; + if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM47186) || + (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == BCMA_PKG_ID_BCM47188)) { + bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII; + bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED; + } + if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM5358) + bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_EPHYRMII; + break; + case BCMA_CHIP_ID_BCM53573: + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK; + if (ci->pkg == BCMA_PKG_ID_BCM47189) + bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED; + if (core->core_unit == 0) { + bgmac->feature_flags |= BGMAC_FEAT_CC4_IF_SW_TYPE; + if (ci->pkg == BCMA_PKG_ID_BCM47189) + bgmac->feature_flags |= + BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII; + } else if (core->core_unit == 1) { + bgmac->feature_flags |= BGMAC_FEAT_IRQ_ID_OOB_6; + bgmac->feature_flags |= BGMAC_FEAT_CC7_IF_TYPE_RGMII; + } + break; + case BCMA_CHIP_ID_BCM4749: + bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK; + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1; + bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY; + if (ci->pkg == 10) { + bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII; + bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED; + } + break; + /* bcm4707_family */ + case BCMA_CHIP_ID_BCM4707: + case BCMA_CHIP_ID_BCM47094: + case BCMA_CHIP_ID_BCM53018: + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + bgmac->feature_flags |= BGMAC_FEAT_NO_RESET; + bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500; + break; + default: + bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST; + bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK; + } + + if (!bgmac_is_bcm4707_family(core) && core->id.rev > 2) + bgmac->feature_flags |= BGMAC_FEAT_MISC_PLL_REQ; + + if (core->id.id == BCMA_CORE_4706_MAC_GBIT) { + bgmac->feature_flags |= BGMAC_FEAT_CMN_PHY_CTL; + bgmac->feature_flags |= BGMAC_FEAT_NO_CLR_MIB; + } + + if (core->id.rev >= 4) { + bgmac->feature_flags |= BGMAC_FEAT_CMDCFG_SR_REV4; + bgmac->feature_flags |= BGMAC_FEAT_TX_MASK_SETUP; + bgmac->feature_flags |= BGMAC_FEAT_RX_MASK_SETUP; + } + + bgmac->read = bcma_bgmac_read; + bgmac->write = bcma_bgmac_write; + bgmac->idm_read = bcma_bgmac_idm_read; + bgmac->idm_write = bcma_bgmac_idm_write; + bgmac->clk_enabled = bcma_bgmac_clk_enabled; + bgmac->clk_enable = bcma_bgmac_clk_enable; + bgmac->cco_ctl_maskset = bcma_bgmac_cco_ctl_maskset; + bgmac->get_bus_clock = bcma_bgmac_get_bus_clock; + bgmac->cmn_maskset32 = bcma_bgmac_cmn_maskset32; + bgmac->phy_connect = bcma_phy_connect; + + err = bgmac_enet_probe(bgmac); + if (err) + goto err1; + + return 0; + +err1: + bcma_mdio_mii_unregister(bgmac->mii_bus); +err: + bcma_set_drvdata(core, NULL); + + return err; +} + +static void bgmac_remove(struct bcma_device *core) +{ + struct bgmac *bgmac = bcma_get_drvdata(core); + + bcma_mdio_mii_unregister(bgmac->mii_bus); + bgmac_enet_remove(bgmac); + bcma_set_drvdata(core, NULL); +} + +static struct bcma_driver bgmac_bcma_driver = { + .name = KBUILD_MODNAME, + .id_table = bgmac_bcma_tbl, + .probe = bgmac_probe, + .remove = bgmac_remove, +}; + +static int __init bgmac_init(void) +{ + int err; + + err = bcma_driver_register(&bgmac_bcma_driver); + if (err) + return err; + pr_info("Broadcom 47xx GBit MAC driver loaded\n"); + + return 0; +} + +static void __exit bgmac_exit(void) +{ + bcma_driver_unregister(&bgmac_bcma_driver); +} + +module_init(bgmac_init) +module_exit(bgmac_exit) + +MODULE_AUTHOR("Rafał Miłecki"); +MODULE_LICENSE("GPL"); |