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