1 files changed, 102 insertions, 156 deletions

diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c
index 56a29f505590..43584946cae2 100644
--- a/drivers/net/ethernet/freescale/fman/fman_memac.c
+++ b/drivers/net/ethernet/freescale/fman/fman_memac.c
@@ -11,43 +11,12 @@
 
 #include <linux/slab.h>
 #include <linux/io.h>
+#include <linux/pcs-lynx.h>
 #include <linux/phy.h>
 #include <linux/phy_fixed.h>
 #include <linux/phy/phy.h>
 #include <linux/of_mdio.h>
 
-/* PCS registers */
-#define MDIO_SGMII_CR			0x00
-#define MDIO_SGMII_DEV_ABIL_SGMII	0x04
-#define MDIO_SGMII_LINK_TMR_L		0x12
-#define MDIO_SGMII_LINK_TMR_H		0x13
-#define MDIO_SGMII_IF_MODE		0x14
-
-/* SGMII Control defines */
-#define SGMII_CR_AN_EN			0x1000
-#define SGMII_CR_RESTART_AN		0x0200
-#define SGMII_CR_FD			0x0100
-#define SGMII_CR_SPEED_SEL1_1G		0x0040
-#define SGMII_CR_DEF_VAL		(SGMII_CR_AN_EN | SGMII_CR_FD | \
-					 SGMII_CR_SPEED_SEL1_1G)
-
-/* SGMII Device Ability for SGMII defines */
-#define MDIO_SGMII_DEV_ABIL_SGMII_MODE	0x4001
-#define MDIO_SGMII_DEV_ABIL_BASEX_MODE	0x01A0
-
-/* Link timer define */
-#define LINK_TMR_L			0xa120
-#define LINK_TMR_H			0x0007
-#define LINK_TMR_L_BASEX		0xaf08
-#define LINK_TMR_H_BASEX		0x002f
-
-/* SGMII IF Mode defines */
-#define IF_MODE_USE_SGMII_AN		0x0002
-#define IF_MODE_SGMII_EN		0x0001
-#define IF_MODE_SGMII_SPEED_100M	0x0004
-#define IF_MODE_SGMII_SPEED_1G		0x0008
-#define IF_MODE_SGMII_DUPLEX_HALF	0x0010
-
 /* Num of additional exact match MAC adr regs */
 #define MEMAC_NUM_OF_PADDRS 7
 
@@ -326,7 +295,9 @@ struct fman_mac {
 	struct fman_rev_info fm_rev_info;
 	bool basex_if;
 	struct phy *serdes;
-	struct phy_device *pcsphy;
+	struct phylink_pcs *sgmii_pcs;
+	struct phylink_pcs *qsgmii_pcs;
+	struct phylink_pcs *xfi_pcs;
 	bool allmulti_enabled;
 };
 
@@ -487,91 +458,22 @@ static u32 get_mac_addr_hash_code(u64 eth_addr)
 	return xor_val;
 }
 
-static void setup_sgmii_internal_phy(struct fman_mac *memac,
-				     struct fixed_phy_status *fixed_link)
+static void setup_sgmii_internal(struct fman_mac *memac,
+				 struct phylink_pcs *pcs,
+				 struct fixed_phy_status *fixed_link)
 {
-	u16 tmp_reg16;
-
-	if (WARN_ON(!memac->pcsphy))
-		return;
-
-	/* SGMII mode */
-	tmp_reg16 = IF_MODE_SGMII_EN;
-	if (!fixed_link)
-		/* AN enable */
-		tmp_reg16 |= IF_MODE_USE_SGMII_AN;
-	else {
-		switch (fixed_link->speed) {
-		case 10:
-			/* For 10M: IF_MODE[SPEED_10M] = 0 */
-		break;
-		case 100:
-			tmp_reg16 |= IF_MODE_SGMII_SPEED_100M;
-		break;
-		case 1000:
-		default:
-			tmp_reg16 |= IF_MODE_SGMII_SPEED_1G;
-		break;
-		}
-		if (!fixed_link->duplex)
-			tmp_reg16 |= IF_MODE_SGMII_DUPLEX_HALF;
-	}
-	phy_write(memac->pcsphy, MDIO_SGMII_IF_MODE, tmp_reg16);
-
-	/* Device ability according to SGMII specification */
-	tmp_reg16 = MDIO_SGMII_DEV_ABIL_SGMII_MODE;
-	phy_write(memac->pcsphy, MDIO_SGMII_DEV_ABIL_SGMII, tmp_reg16);
-
-	/* Adjust link timer for SGMII  -
-	 * According to Cisco SGMII specification the timer should be 1.6 ms.
-	 * The link_timer register is configured in units of the clock.
-	 * - When running as 1G SGMII, Serdes clock is 125 MHz, so
-	 * unit = 1 / (125*10^6 Hz) = 8 ns.
-	 * 1.6 ms in units of 8 ns = 1.6ms / 8ns = 2*10^5 = 0x30d40
-	 * - When running as 2.5G SGMII, Serdes clock is 312.5 MHz, so
-	 * unit = 1 / (312.5*10^6 Hz) = 3.2 ns.
-	 * 1.6 ms in units of 3.2 ns = 1.6ms / 3.2ns = 5*10^5 = 0x7a120.
-	 * Since link_timer value of 1G SGMII will be too short for 2.5 SGMII,
-	 * we always set up here a value of 2.5 SGMII.
-	 */
-	phy_write(memac->pcsphy, MDIO_SGMII_LINK_TMR_H, LINK_TMR_H);
-	phy_write(memac->pcsphy, MDIO_SGMII_LINK_TMR_L, LINK_TMR_L);
-
-	if (!fixed_link)
-		/* Restart AN */
-		tmp_reg16 = SGMII_CR_DEF_VAL | SGMII_CR_RESTART_AN;
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
+	phy_interface_t iface = memac->basex_if ? PHY_INTERFACE_MODE_1000BASEX :
+				PHY_INTERFACE_MODE_SGMII;
+	unsigned int mode = fixed_link ? MLO_AN_FIXED : MLO_AN_INBAND;
+
+	linkmode_set_pause(advertising, true, true);
+	pcs->ops->pcs_config(pcs, mode, iface, advertising, true);
+	if (fixed_link)
+		pcs->ops->pcs_link_up(pcs, mode, iface, fixed_link->speed,
+				      fixed_link->duplex);
 	else
-		/* AN disabled */
-		tmp_reg16 = SGMII_CR_DEF_VAL & ~SGMII_CR_AN_EN;
-	phy_write(memac->pcsphy, 0x0, tmp_reg16);
-}
-
-static void setup_sgmii_internal_phy_base_x(struct fman_mac *memac)
-{
-	u16 tmp_reg16;
-
-	/* AN Device capability  */
-	tmp_reg16 = MDIO_SGMII_DEV_ABIL_BASEX_MODE;
-	phy_write(memac->pcsphy, MDIO_SGMII_DEV_ABIL_SGMII, tmp_reg16);
-
-	/* Adjust link timer for SGMII  -
-	 * For Serdes 1000BaseX auto-negotiation the timer should be 10 ms.
-	 * The link_timer register is configured in units of the clock.
-	 * - When running as 1G SGMII, Serdes clock is 125 MHz, so
-	 * unit = 1 / (125*10^6 Hz) = 8 ns.
-	 * 10 ms in units of 8 ns = 10ms / 8ns = 1250000 = 0x1312d0
-	 * - When running as 2.5G SGMII, Serdes clock is 312.5 MHz, so
-	 * unit = 1 / (312.5*10^6 Hz) = 3.2 ns.
-	 * 10 ms in units of 3.2 ns = 10ms / 3.2ns = 3125000 = 0x2faf08.
-	 * Since link_timer value of 1G SGMII will be too short for 2.5 SGMII,
-	 * we always set up here a value of 2.5 SGMII.
-	 */
-	phy_write(memac->pcsphy, MDIO_SGMII_LINK_TMR_H, LINK_TMR_H_BASEX);
-	phy_write(memac->pcsphy, MDIO_SGMII_LINK_TMR_L, LINK_TMR_L_BASEX);
-
-	/* Restart AN */
-	tmp_reg16 = SGMII_CR_DEF_VAL | SGMII_CR_RESTART_AN;
-	phy_write(memac->pcsphy, 0x0, tmp_reg16);
+		pcs->ops->pcs_an_restart(pcs);
 }
 
 static int check_init_parameters(struct fman_mac *memac)
@@ -983,7 +885,6 @@ static int memac_set_exception(struct fman_mac *memac,
 static int memac_init(struct fman_mac *memac)
 {
 	struct memac_cfg *memac_drv_param;
-	u8 i;
 	enet_addr_t eth_addr;
 	bool slow_10g_if = false;
 	struct fixed_phy_status *fixed_link = NULL;
@@ -1036,32 +937,10 @@ static int memac_init(struct fman_mac *memac)
 		iowrite32be(reg32, &memac->regs->command_config);
 	}
 
-	if (memac->phy_if == PHY_INTERFACE_MODE_SGMII) {
-		/* Configure internal SGMII PHY */
-		if (memac->basex_if)
-			setup_sgmii_internal_phy_base_x(memac);
-		else
-			setup_sgmii_internal_phy(memac, fixed_link);
-	} else if (memac->phy_if == PHY_INTERFACE_MODE_QSGMII) {
-		/* Configure 4 internal SGMII PHYs */
-		for (i = 0; i < 4; i++) {
-			u8 qsmgii_phy_addr, phy_addr;
-			/* QSGMII PHY address occupies 3 upper bits of 5-bit
-			 * phy_address; the lower 2 bits are used to extend
-			 * register address space and access each one of 4
-			 * ports inside QSGMII.
-			 */
-			phy_addr = memac->pcsphy->mdio.addr;
-			qsmgii_phy_addr = (u8)((phy_addr << 2) | i);
-			memac->pcsphy->mdio.addr = qsmgii_phy_addr;
-			if (memac->basex_if)
-				setup_sgmii_internal_phy_base_x(memac);
-			else
-				setup_sgmii_internal_phy(memac, fixed_link);
-
-			memac->pcsphy->mdio.addr = phy_addr;
-		}
-	}
+	if (memac->phy_if == PHY_INTERFACE_MODE_SGMII)
+		setup_sgmii_internal(memac, memac->sgmii_pcs, fixed_link);
+	else if (memac->phy_if == PHY_INTERFACE_MODE_QSGMII)
+		setup_sgmii_internal(memac, memac->qsgmii_pcs, fixed_link);
 
 	/* Max Frame Length */
 	err = fman_set_mac_max_frame(memac->fm, memac->mac_id,
@@ -1097,12 +976,25 @@ static int memac_init(struct fman_mac *memac)
 	return 0;
 }
 
+static void pcs_put(struct phylink_pcs *pcs)
+{
+	struct mdio_device *mdiodev;
+
+	if (IS_ERR_OR_NULL(pcs))
+		return;
+
+	mdiodev = lynx_get_mdio_device(pcs);
+	lynx_pcs_destroy(pcs);
+	mdio_device_free(mdiodev);
+}
+
 static int memac_free(struct fman_mac *memac)
 {
 	free_init_resources(memac);
 
-	if (memac->pcsphy)
-		put_device(&memac->pcsphy->mdio.dev);
+	pcs_put(memac->sgmii_pcs);
+	pcs_put(memac->qsgmii_pcs);
+	pcs_put(memac->xfi_pcs);
 
 	kfree(memac->memac_drv_param);
 	kfree(memac);
@@ -1153,12 +1045,31 @@ static struct fman_mac *memac_config(struct mac_device *mac_dev,
 	return memac;
 }
 
+static struct phylink_pcs *memac_pcs_create(struct device_node *mac_node,
+					    int index)
+{
+	struct device_node *node;
+	struct mdio_device *mdiodev = NULL;
+	struct phylink_pcs *pcs;
+
+	node = of_parse_phandle(mac_node, "pcsphy-handle", index);
+	if (node && of_device_is_available(node))
+		mdiodev = of_mdio_find_device(node);
+	of_node_put(node);
+
+	if (!mdiodev)
+		return ERR_PTR(-EPROBE_DEFER);
+
+	pcs = lynx_pcs_create(mdiodev);
+	return pcs;
+}
+
 int memac_initialization(struct mac_device *mac_dev,
 			 struct device_node *mac_node,
 			 struct fman_mac_params *params)
 {
 	int			 err;
-	struct device_node	*phy_node;
+	struct phylink_pcs	*pcs;
 	struct fixed_phy_status *fixed_link;
 	struct fman_mac		*memac;
 
@@ -1188,23 +1099,58 @@ int memac_initialization(struct mac_device *mac_dev,
 	memac = mac_dev->fman_mac;
 	memac->memac_drv_param->max_frame_length = fman_get_max_frm();
 	memac->memac_drv_param->reset_on_init = true;
-	if (memac->phy_if == PHY_INTERFACE_MODE_SGMII ||
-	    memac->phy_if == PHY_INTERFACE_MODE_QSGMII) {
-		phy_node = of_parse_phandle(mac_node, "pcsphy-handle", 0);
-		if (!phy_node) {
-			pr_err("PCS PHY node is not available\n");
-			err = -EINVAL;
+
+	err = of_property_match_string(mac_node, "pcs-handle-names", "xfi");
+	if (err >= 0) {
+		memac->xfi_pcs = memac_pcs_create(mac_node, err);
+		if (IS_ERR(memac->xfi_pcs)) {
+			err = PTR_ERR(memac->xfi_pcs);
+			dev_err_probe(mac_dev->dev, err, "missing xfi pcs\n");
 			goto _return_fm_mac_free;
 		}
+	} else if (err != -EINVAL && err != -ENODATA) {
+		goto _return_fm_mac_free;
+	}
 
-		memac->pcsphy = of_phy_find_device(phy_node);
-		if (!memac->pcsphy) {
-			pr_err("of_phy_find_device (PCS PHY) failed\n");
-			err = -EINVAL;
+	err = of_property_match_string(mac_node, "pcs-handle-names", "qsgmii");
+	if (err >= 0) {
+		memac->qsgmii_pcs = memac_pcs_create(mac_node, err);
+		if (IS_ERR(memac->qsgmii_pcs)) {
+			err = PTR_ERR(memac->qsgmii_pcs);
+			dev_err_probe(mac_dev->dev, err,
+				      "missing qsgmii pcs\n");
 			goto _return_fm_mac_free;
 		}
+	} else if (err != -EINVAL && err != -ENODATA) {
+		goto _return_fm_mac_free;
+	}
+
+	/* For compatibility, if pcs-handle-names is missing, we assume this
+	 * phy is the first one in pcsphy-handle
+	 */
+	err = of_property_match_string(mac_node, "pcs-handle-names", "sgmii");
+	if (err == -EINVAL || err == -ENODATA)
+		pcs = memac_pcs_create(mac_node, 0);
+	else if (err < 0)
+		goto _return_fm_mac_free;
+	else
+		pcs = memac_pcs_create(mac_node, err);
+
+	if (!pcs) {
+		dev_err(mac_dev->dev, "missing pcs\n");
+		err = -ENOENT;
+		goto _return_fm_mac_free;
 	}
 
+	/* If err is set here, it means that pcs-handle-names was missing above
+	 * (and therefore that xfi_pcs cannot be set). If we are defaulting to
+	 * XGMII, assume this is for XFI. Otherwise, assume it is for SGMII.
+	 */
+	if (err && mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
+		memac->xfi_pcs = pcs;
+	else
+		memac->sgmii_pcs = pcs;
+
 	memac->serdes = devm_of_phy_get(mac_dev->dev, mac_node, "serdes");
 	err = PTR_ERR(memac->serdes);
 	if (err == -ENODEV || err == -ENOSYS) {