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openwrtv3/target/linux/brcm47xx/patches-3.10/770-bgmac-phylib.patch
Hauke Mehrtens f687ab2101 brcm47xx: bgmac: implement unaligned addressing for DMA rings that support it 
This is important patch for new devices that support unaligned
addressing. That devices suffer from the backward-compatibility bug in
DMA engine. In theory we should be able to use old mechanism, but in
practice DMA address seems to be randomly copied into status register
when hardware reaches end of a ring. This breaks reading slot number
from status register and we can't use DMA anymore.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 38004
2013-09-16 19:46:34 +00:00

208 lines
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--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -133,6 +133,7 @@ config BNX2X_SRIOV
config BGMAC
tristate "BCMA bus GBit core support"
depends on BCMA_HOST_SOC && HAS_DMA
+ select PHYLIB
---help---
This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
They can be found on BCM47xx SoCs and provide gigabit ethernet.
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1219,27 +1219,14 @@ static int bgmac_set_mac_address(struct
static int bgmac_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
{
struct bgmac *bgmac = netdev_priv(net_dev);
- struct mii_ioctl_data *data = if_mii(ifr);
- switch (cmd) {
- case SIOCGMIIPHY:
- data->phy_id = bgmac->phyaddr;
- /* fallthru */
- case SIOCGMIIREG:
- if (!netif_running(net_dev))
- return -EAGAIN;
- data->val_out = bgmac_phy_read(bgmac, data->phy_id,
- data->reg_num & 0x1f);
- return 0;
- case SIOCSMIIREG:
- if (!netif_running(net_dev))
- return -EAGAIN;
- bgmac_phy_write(bgmac, data->phy_id, data->reg_num & 0x1f,
- data->val_in);
- return 0;
- default:
- return -EOPNOTSUPP;
- }
+ if (!netif_running(net_dev))
+ return -EINVAL;
+
+ if (!bgmac->phydev)
+ return -EINVAL;
+
+ return phy_mii_ioctl(bgmac->phydev, ifr, cmd);
}
static const struct net_device_ops bgmac_netdev_ops = {
@@ -1261,61 +1248,18 @@ static int bgmac_get_settings(struct net
{
struct bgmac *bgmac = netdev_priv(net_dev);
- cmd->supported = SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full |
- SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full |
- SUPPORTED_Autoneg;
-
- if (bgmac->autoneg) {
- WARN_ON(cmd->advertising);
- if (bgmac->full_duplex) {
- if (bgmac->speed & BGMAC_SPEED_10)
- cmd->advertising |= ADVERTISED_10baseT_Full;
- if (bgmac->speed & BGMAC_SPEED_100)
- cmd->advertising |= ADVERTISED_100baseT_Full;
- if (bgmac->speed & BGMAC_SPEED_1000)
- cmd->advertising |= ADVERTISED_1000baseT_Full;
- } else {
- if (bgmac->speed & BGMAC_SPEED_10)
- cmd->advertising |= ADVERTISED_10baseT_Half;
- if (bgmac->speed & BGMAC_SPEED_100)
- cmd->advertising |= ADVERTISED_100baseT_Half;
- if (bgmac->speed & BGMAC_SPEED_1000)
- cmd->advertising |= ADVERTISED_1000baseT_Half;
- }
- } else {
- switch (bgmac->speed) {
- case BGMAC_SPEED_10:
- ethtool_cmd_speed_set(cmd, SPEED_10);
- break;
- case BGMAC_SPEED_100:
- ethtool_cmd_speed_set(cmd, SPEED_100);
- break;
- case BGMAC_SPEED_1000:
- ethtool_cmd_speed_set(cmd, SPEED_1000);
- break;
- }
- }
-
- cmd->duplex = bgmac->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
-
- cmd->autoneg = bgmac->autoneg;
-
- return 0;
+ return phy_ethtool_gset(bgmac->phydev, cmd);
}
-#if 0
+
static int bgmac_set_settings(struct net_device *net_dev,
struct ethtool_cmd *cmd)
{
struct bgmac *bgmac = netdev_priv(net_dev);
- return -1;
+ return phy_ethtool_sset(bgmac->phydev, cmd);
}
-#endif
+
static void bgmac_get_drvinfo(struct net_device *net_dev,
struct ethtool_drvinfo *info)
@@ -1326,6 +1270,7 @@ static void bgmac_get_drvinfo(struct net
static const struct ethtool_ops bgmac_ethtool_ops = {
.get_settings = bgmac_get_settings,
+ .set_settings = bgmac_set_settings,
.get_drvinfo = bgmac_get_drvinfo,
};
@@ -1344,10 +1289,42 @@ static int bgmac_mii_write(struct mii_bu
return bgmac_phy_write(bus->priv, mii_id, regnum, value);
}
+static void bgmac_adjust_link(struct net_device *dev)
+{
+ struct bgmac *bgmac = netdev_priv(dev);
+ struct phy_device *phydev = bgmac->phydev;
+ int status_changed = 0;
+
+ BUG_ON(!phydev);
+
+ if (bgmac->old_link != phydev->link) {
+ status_changed = 1;
+ bgmac->old_link = phydev->link;
+ }
+
+ /* reflect duplex change */
+ if (phydev->link && (bgmac->old_duplex != phydev->duplex)) {
+ status_changed = 1;
+ bgmac->old_duplex = phydev->duplex;
+ }
+
+ if (status_changed) {
+ pr_info("%s: link %s", dev->name, phydev->link ?
+ "UP" : "DOWN");
+ if (phydev->link)
+ pr_cont(" - %d/%s", phydev->speed,
+ phydev->duplex == DUPLEX_FULL ? "full" : "half");
+ pr_cont("\n");
+ }
+}
+
static int bgmac_mii_register(struct bgmac *bgmac)
{
struct mii_bus *mii_bus;
int i, err = 0;
+ struct phy_device *phydev = NULL;
+ char phy_id[MII_BUS_ID_SIZE + 3];
+ struct net_device *net_dev = bgmac->net_dev;
mii_bus = mdiobus_alloc();
if (!mii_bus)
@@ -1378,7 +1355,29 @@ static int bgmac_mii_register(struct bgm
bgmac->mii_bus = mii_bus;
- return err;
+ /* connect to PHY */
+ snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ mii_bus->id, bgmac->phyaddr);
+
+ phydev = phy_connect(net_dev, phy_id, &bgmac_adjust_link,
+ PHY_INTERFACE_MODE_MII);
+
+ if (IS_ERR(phydev)) {
+ netdev_err(net_dev, "could not attach PHY: %s", phy_id);
+ bgmac->phyaddr = BGMAC_PHY_NOREGS;
+ return PTR_ERR(phydev);
+ }
+
+ bgmac->phydev = phydev;
+ bgmac->old_link = 0;
+ bgmac->old_duplex = -1;
+ bgmac->phyaddr = phydev->addr;
+
+ netdev_info(net_dev, "attached PHY driver [%s] "
+ "(mii_bus:phy_addr=%s)\n",
+ phydev->drv->name, dev_name(&phydev->dev));
+
+ return 0;
err_free_irq:
kfree(mii_bus->irq);
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -401,7 +401,10 @@ struct bgmac {
struct bcma_device *cmn; /* Reference to CMN core for BCM4706 */
struct net_device *net_dev;
struct napi_struct napi;
+ struct phy_device *phydev;
struct mii_bus *mii_bus;
+ int old_link;
+ int old_duplex;
/* DMA */
struct bgmac_dma_ring tx_ring[BGMAC_MAX_TX_RINGS];
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