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Date: Fri, 20 Apr 2018 11:43:50 +0530 From: Raghuram Chary J <raghuramchary.jallipalli@...rochip.com> To: <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <unglinuxdriver@...rochip.com>, <woojung.huh@...rochip.com>, <raghuramchary.jallipalli@...rochip.com> Subject: [PATCH v1 net-next] lan78xx: Add support to dump lan78xx registers In order to dump lan78xx family registers using ethtool, add support at lan78xx driver level. Signed-off-by: Raghuram Chary J <raghuramchary.jallipalli@...rochip.com> --- v0->v1: * Remove one variable in the for loop. --- drivers/net/usb/lan78xx.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 0867f7275852..207a3e18c08f 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -278,6 +278,30 @@ struct lan78xx_statstage64 { u64 eee_tx_lpi_time; }; +static u32 lan78xx_regs[] = { + ID_REV, + INT_STS, + HW_CFG, + PMT_CTL, + E2P_CMD, + E2P_DATA, + USB_STATUS, + VLAN_TYPE, + MAC_CR, + MAC_RX, + MAC_TX, + FLOW, + ERR_STS, + MII_ACC, + MII_DATA, + EEE_TX_LPI_REQ_DLY, + EEE_TW_TX_SYS, + EEE_TX_LPI_REM_DLY, + WUCSR +}; + +#define PHY_REG_SIZE (32 * sizeof(u32)) + struct lan78xx_net; struct lan78xx_priv { @@ -1605,6 +1629,34 @@ static int lan78xx_set_pause(struct net_device *net, return ret; } +static int lan78xx_get_regs_len(struct net_device *netdev) +{ + if (!netdev->phydev) + return (sizeof(lan78xx_regs)); + else + return (sizeof(lan78xx_regs) + PHY_REG_SIZE); +} + +static void +lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs, + void *buf) +{ + u32 *data = buf; + int i, j; + struct lan78xx_net *dev = netdev_priv(netdev); + + /* Read Device/MAC registers */ + for (i = 0; i < (sizeof(lan78xx_regs) / sizeof(u32)); i++) + lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]); + + if (!netdev->phydev) + return; + + /* Read PHY registers */ + for (j = 0; j < 32; i++, j++) + data[i] = phy_read(netdev->phydev, j); +} + static const struct ethtool_ops lan78xx_ethtool_ops = { .get_link = lan78xx_get_link, .nway_reset = phy_ethtool_nway_reset, @@ -1625,6 +1677,8 @@ static const struct ethtool_ops lan78xx_ethtool_ops = { .set_pauseparam = lan78xx_set_pause, .get_link_ksettings = lan78xx_get_link_ksettings, .set_link_ksettings = lan78xx_set_link_ksettings, + .get_regs_len = lan78xx_get_regs_len, + .get_regs = lan78xx_get_regs, }; static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) -- 2.16.2
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