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path: root/drivers/net/ethernet/cadence
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Diffstat (limited to 'drivers/net/ethernet/cadence')
-rw-r--r--drivers/net/ethernet/cadence/macb.h14
-rw-r--r--drivers/net/ethernet/cadence/macb_main.c59
2 files changed, 55 insertions, 18 deletions
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index d8c68906525a..d8d87213697c 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -159,6 +159,16 @@
#define GEM_PEFTN 0x01f4 /* PTP Peer Event Frame Tx Ns */
#define GEM_PEFRSL 0x01f8 /* PTP Peer Event Frame Rx Sec Low */
#define GEM_PEFRN 0x01fc /* PTP Peer Event Frame Rx Ns */
+#define GEM_PCSCNTRL 0x0200 /* PCS Control */
+#define GEM_PCSSTS 0x0204 /* PCS Status */
+#define GEM_PCSPHYTOPID 0x0208 /* PCS PHY Top ID */
+#define GEM_PCSPHYBOTID 0x020c /* PCS PHY Bottom ID */
+#define GEM_PCSANADV 0x0210 /* PCS AN Advertisement */
+#define GEM_PCSANLPBASE 0x0214 /* PCS AN Link Partner Base */
+#define GEM_PCSANEXP 0x0218 /* PCS AN Expansion */
+#define GEM_PCSANNPTX 0x021c /* PCS AN Next Page TX */
+#define GEM_PCSANNPLP 0x0220 /* PCS AN Next Page LP */
+#define GEM_PCSANEXTSTS 0x023c /* PCS AN Extended Status */
#define GEM_DCFG1 0x0280 /* Design Config 1 */
#define GEM_DCFG2 0x0284 /* Design Config 2 */
#define GEM_DCFG3 0x0288 /* Design Config 3 */
@@ -478,6 +488,10 @@
#define GEM_HS_MAC_SPEED_OFFSET 0
#define GEM_HS_MAC_SPEED_SIZE 3
+/* Bitfields in PCSCNTRL */
+#define GEM_PCSAUTONEG_OFFSET 12
+#define GEM_PCSAUTONEG_SIZE 1
+
/* Bitfields in DCFG1. */
#define GEM_IRQCOR_OFFSET 23
#define GEM_IRQCOR_SIZE 1
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 0f6a6cb7e98d..0e94db9cd45d 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -694,6 +694,22 @@ static void macb_mac_config(struct phylink_config *config, unsigned int mode,
if (old_ncr ^ ncr)
macb_or_gem_writel(bp, NCR, ncr);
+ /* Disable AN for SGMII fixed link configuration, enable otherwise.
+ * Must be written after PCSSEL is set in NCFGR,
+ * otherwise writes will not take effect.
+ */
+ if (macb_is_gem(bp) && state->interface == PHY_INTERFACE_MODE_SGMII) {
+ u32 pcsctrl, old_pcsctrl;
+
+ old_pcsctrl = gem_readl(bp, PCSCNTRL);
+ if (mode == MLO_AN_FIXED)
+ pcsctrl = old_pcsctrl & ~GEM_BIT(PCSAUTONEG);
+ else
+ pcsctrl = old_pcsctrl | GEM_BIT(PCSAUTONEG);
+ if (old_pcsctrl != pcsctrl)
+ gem_writel(bp, PCSCNTRL, pcsctrl);
+ }
+
spin_unlock_irqrestore(&bp->lock, flags);
}
@@ -847,6 +863,15 @@ static int macb_phylink_connect(struct macb *bp)
return 0;
}
+static void macb_get_pcs_fixed_state(struct phylink_config *config,
+ struct phylink_link_state *state)
+{
+ struct net_device *ndev = to_net_dev(config->dev);
+ struct macb *bp = netdev_priv(ndev);
+
+ state->link = (macb_readl(bp, NSR) & MACB_BIT(NSR_LINK)) != 0;
+}
+
/* based on au1000_eth. c*/
static int macb_mii_probe(struct net_device *dev)
{
@@ -855,6 +880,11 @@ static int macb_mii_probe(struct net_device *dev)
bp->phylink_config.dev = &dev->dev;
bp->phylink_config.type = PHYLINK_NETDEV;
+ if (bp->phy_interface == PHY_INTERFACE_MODE_SGMII) {
+ bp->phylink_config.poll_fixed_state = true;
+ bp->phylink_config.get_fixed_state = macb_get_pcs_fixed_state;
+ }
+
bp->phylink = phylink_create(&bp->phylink_config, bp->pdev->dev.fwnode,
bp->phy_interface, &macb_phylink_ops);
if (IS_ERR(bp->phylink)) {
@@ -3735,17 +3765,15 @@ static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
*hclk = devm_clk_get(&pdev->dev, "hclk");
}
- if (IS_ERR_OR_NULL(*pclk)) {
- err = IS_ERR(*pclk) ? PTR_ERR(*pclk) : -ENODEV;
- dev_err(&pdev->dev, "failed to get macb_clk (%d)\n", err);
- return err;
- }
+ if (IS_ERR_OR_NULL(*pclk))
+ return dev_err_probe(&pdev->dev,
+ IS_ERR(*pclk) ? PTR_ERR(*pclk) : -ENODEV,
+ "failed to get pclk\n");
- if (IS_ERR_OR_NULL(*hclk)) {
- err = IS_ERR(*hclk) ? PTR_ERR(*hclk) : -ENODEV;
- dev_err(&pdev->dev, "failed to get hclk (%d)\n", err);
- return err;
- }
+ if (IS_ERR_OR_NULL(*hclk))
+ return dev_err_probe(&pdev->dev,
+ IS_ERR(*hclk) ? PTR_ERR(*hclk) : -ENODEV,
+ "failed to get hclk\n");
*tx_clk = devm_clk_get_optional(&pdev->dev, "tx_clk");
if (IS_ERR(*tx_clk))
@@ -4621,7 +4649,6 @@ static int macb_probe(struct platform_device *pdev)
struct net_device *dev;
struct resource *regs;
void __iomem *mem;
- const char *mac;
struct macb *bp;
int err, val;
@@ -4736,15 +4763,11 @@ static int macb_probe(struct platform_device *pdev)
if (bp->caps & MACB_CAPS_NEEDS_RSTONUBR)
bp->rx_intr_mask |= MACB_BIT(RXUBR);
- mac = of_get_mac_address(np);
- if (PTR_ERR(mac) == -EPROBE_DEFER) {
- err = -EPROBE_DEFER;
+ err = of_get_mac_address(np, bp->dev->dev_addr);
+ if (err == -EPROBE_DEFER)
goto err_out_free_netdev;
- } else if (!IS_ERR_OR_NULL(mac)) {
- ether_addr_copy(bp->dev->dev_addr, mac);
- } else {
+ else if (err)
macb_get_hwaddr(bp);
- }
err = of_get_phy_mode(np, &interface);
if (err)