1 files changed, 315 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 000000000000..9a9745c4047c
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -0,0 +1,315 @@
+/*
+ * 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 "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 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 ssb_sprom *sprom = &core->bus->sprom;
+	struct mii_bus *mii_bus;
+	struct bgmac *bgmac;
+	u8 *mac;
+	int err;
+
+	bgmac = kzalloc(sizeof(*bgmac), GFP_KERNEL);
+	if (!bgmac)
+		return -ENOMEM;
+
+	bgmac->bcma.core = core;
+	bgmac->dev = &core->dev;
+	bgmac->dma_dev = core->dma_dev;
+	bgmac->irq = core->irq;
+
+	bcma_set_drvdata(core, bgmac);
+
+	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;
+	}
+
+	ether_addr_copy(bgmac->mac_addr, 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)) {
+		mii_bus = bcma_mdio_mii_register(core, bgmac->phyaddr);
+		if (!IS_ERR(mii_bus)) {
+			err = PTR_ERR(mii_bus);
+			goto err;
+		}
+
+		bgmac->mii_bus = mii_bus;
+	}
+
+	if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {
+		dev_err(bgmac->dev, "PCI setup not implemented\n");
+		err = -ENOTSUPP;
+		goto err1;
+	}
+
+	bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo &
+			       BGMAC_BFL_ENETROBO);
+	if (bgmac->has_robosw)
+		dev_warn(bgmac->dev, "Support for Roboswitch not implemented\n");
+
+	if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM)
+		dev_warn(bgmac->dev, "Support for ADMtek ethernet switch not implemented\n");
+
+	/* Feature Flags */
+	switch (core->bus->chipinfo.id) {
+	case BCMA_CHIP_ID_BCM5357:
+		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 (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM47186) {
+			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
+			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
+		}
+		if (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM5358)
+			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_EPHYRMII;
+		break;
+	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 (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM47188) {
+			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
+			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
+		}
+		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 (core->bus->chipinfo.pkg == 10) {
+			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
+			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
+		}
+		break;
+	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;
+	/* 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;
+
+	err = bgmac_enet_probe(bgmac);
+	if (err)
+		goto err1;
+
+	return 0;
+
+err1:
+	bcma_mdio_mii_unregister(bgmac->mii_bus);
+err:
+	kfree(bgmac);
+	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);
+	kfree(bgmac);
+}
+
+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");