Merge branch 'QorIQ-DPAA-Use-random-MAC-address-when-none-is-given'

Sascha Hauer says:

====================
QorIQ DPAA: Use random MAC address when none is given

Use random MAC addresses when they are not provided in the device tree.
Tested on LS1046ARDB.

Changes in v3:
 addressed all MAC types, removed some redundant code in dtsec in
 the process
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa/dpaa_eth.c

@@ -233,8 +233,20 @@ static int dpaa_netdev_init(struct net_device *net_dev,
 	net_dev->features |= net_dev->hw_features;
 	net_dev->vlan_features = net_dev->features;
 
-	memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len);
-	memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len);
+	if (is_valid_ether_addr(mac_addr)) {
+		memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len);
+		memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len);
+	} else {
+		eth_hw_addr_random(net_dev);
+		err = priv->mac_dev->change_addr(priv->mac_dev->fman_mac,
+			(enet_addr_t *)net_dev->dev_addr);
+		if (err) {
+			dev_err(dev, "Failed to set random MAC address\n");
+			return -EINVAL;
+		}
+		dev_info(dev, "Using random MAC address: %pM\n",
+			 net_dev->dev_addr);
+	}
 
 	net_dev->ethtool_ops = &dpaa_ethtool_ops;
 

drivers/net/ethernet/freescale/fman/fman_dtsec.c

@@ -366,13 +366,26 @@ static void set_dflts(struct dtsec_cfg *cfg)
 	cfg->maximum_frame = DEFAULT_MAXIMUM_FRAME;
 }
 
+static void set_mac_address(struct dtsec_regs __iomem *regs, u8 *adr)
+{
+	u32 tmp;
+
+	tmp = (u32)((adr[5] << 24) |
+		    (adr[4] << 16) | (adr[3] << 8) | adr[2]);
+	iowrite32be(tmp, &regs->macstnaddr1);
+
+	tmp = (u32)((adr[1] << 24) | (adr[0] << 16));
+	iowrite32be(tmp, &regs->macstnaddr2);
+}
+
 static int init(struct dtsec_regs __iomem *regs, struct dtsec_cfg *cfg,
-		phy_interface_t iface, u16 iface_speed, u8 *macaddr,
+		phy_interface_t iface, u16 iface_speed, u64 addr,
 		u32 exception_mask, u8 tbi_addr)
 {
 	bool is_rgmii, is_sgmii, is_qsgmii;
-	int i;
+	enet_addr_t eth_addr;
 	u32 tmp;
+	int i;
 
 	/* Soft reset */
 	iowrite32be(MACCFG1_SOFT_RESET, &regs->maccfg1);
@@ -501,12 +514,10 @@ static int init(struct dtsec_regs __iomem *regs, struct dtsec_cfg *cfg,
 
 	iowrite32be(0xffffffff, &regs->ievent);
 
-	tmp = (u32)((macaddr[5] << 24) |
-		    (macaddr[4] << 16) | (macaddr[3] << 8) | macaddr[2]);
-	iowrite32be(tmp, &regs->macstnaddr1);
-
-	tmp = (u32)((macaddr[1] << 24) | (macaddr[0] << 16));
-	iowrite32be(tmp, &regs->macstnaddr2);
+	if (addr) {
+		MAKE_ENET_ADDR_FROM_UINT64(addr, eth_addr);
+		set_mac_address(regs, (u8 *)eth_addr);
+	}
 
 	/* HASH */
 	for (i = 0; i < NUM_OF_HASH_REGS; i++) {
@@ -519,18 +530,6 @@ static int init(struct dtsec_regs __iomem *regs, struct dtsec_cfg *cfg,
 	return 0;
 }
 
-static void set_mac_address(struct dtsec_regs __iomem *regs, u8 *adr)
-{
-	u32 tmp;
-
-	tmp = (u32)((adr[5] << 24) |
-		    (adr[4] << 16) | (adr[3] << 8) | adr[2]);
-	iowrite32be(tmp, &regs->macstnaddr1);
-
-	tmp = (u32)((adr[1] << 24) | (adr[0] << 16));
-	iowrite32be(tmp, &regs->macstnaddr2);
-}
-
 static void set_bucket(struct dtsec_regs __iomem *regs, int bucket,
 		       bool enable)
 {
@@ -556,10 +555,6 @@ static int check_init_parameters(struct fman_mac *dtsec)
 		pr_err("1G MAC driver supports 1G or lower speeds\n");
 		return -EINVAL;
 	}
-	if (dtsec->addr == 0) {
-		pr_err("Ethernet MAC Must have a valid MAC Address\n");
-		return -EINVAL;
-	}
 	if ((dtsec->dtsec_drv_param)->rx_prepend >
 	    MAX_PACKET_ALIGNMENT) {
 		pr_err("packetAlignmentPadding can't be > than %d\n",
@@ -1391,9 +1386,8 @@ int dtsec_init(struct fman_mac *dtsec)
 {
 	struct dtsec_regs __iomem *regs = dtsec->regs;
 	struct dtsec_cfg *dtsec_drv_param;
-	int err;
 	u16 max_frm_ln;
-	enet_addr_t eth_addr;
+	int err;
 
 	if (is_init_done(dtsec->dtsec_drv_param))
 		return -EINVAL;
@@ -1410,10 +1404,8 @@ int dtsec_init(struct fman_mac *dtsec)
 
 	dtsec_drv_param = dtsec->dtsec_drv_param;
 
-	MAKE_ENET_ADDR_FROM_UINT64(dtsec->addr, eth_addr);
-
 	err = init(dtsec->regs, dtsec_drv_param, dtsec->phy_if,
-		   dtsec->max_speed, (u8 *)eth_addr, dtsec->exceptions,
+		   dtsec->max_speed, dtsec->addr, dtsec->exceptions,
 		   dtsec->tbiphy->mdio.addr);
 	if (err) {
 		free_init_resources(dtsec);

drivers/net/ethernet/freescale/fman/fman_memac.c

@@ -596,10 +596,6 @@ static void setup_sgmii_internal_phy_base_x(struct fman_mac *memac)
 
 static int check_init_parameters(struct fman_mac *memac)
 {
-	if (memac->addr == 0) {
-		pr_err("Ethernet MAC must have a valid MAC address\n");
-		return -EINVAL;
-	}
 	if (!memac->exception_cb) {
 		pr_err("Uninitialized exception handler\n");
 		return -EINVAL;
@@ -1057,8 +1053,10 @@ int memac_init(struct fman_mac *memac)
 	}
 
 	/* MAC Address */
-	MAKE_ENET_ADDR_FROM_UINT64(memac->addr, eth_addr);
-	add_addr_in_paddr(memac->regs, (u8 *)eth_addr, 0);
+	if (memac->addr != 0) {
+		MAKE_ENET_ADDR_FROM_UINT64(memac->addr, eth_addr);
+		add_addr_in_paddr(memac->regs, (u8 *)eth_addr, 0);
+	}
 
 	fixed_link = memac_drv_param->fixed_link;
 

drivers/net/ethernet/freescale/fman/fman_tgec.c

@@ -273,10 +273,6 @@ static int check_init_parameters(struct fman_mac *tgec)
 		pr_err("10G MAC driver only support 10G speed\n");
 		return -EINVAL;
 	}
-	if (tgec->addr == 0) {
-		pr_err("Ethernet 10G MAC Must have valid MAC Address\n");
-		return -EINVAL;
-	}
 	if (!tgec->exception_cb) {
 		pr_err("uninitialized exception_cb\n");
 		return -EINVAL;
@@ -706,8 +702,10 @@ int tgec_init(struct fman_mac *tgec)
 
 	cfg = tgec->cfg;
 
-	MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
-	set_mac_address(tgec->regs, (u8 *)eth_addr);
+	if (tgec->addr) {
+		MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
+		set_mac_address(tgec->regs, (u8 *)eth_addr);
+	}
 
 	/* interrupts */
 	/* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */

drivers/net/ethernet/freescale/fman/mac.c

@@ -724,12 +724,10 @@ static int mac_probe(struct platform_device *_of_dev)
 
 	/* Get the MAC address */
 	mac_addr = of_get_mac_address(mac_node);
-	if (IS_ERR(mac_addr)) {
-		dev_err(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
-		err = -EINVAL;
-		goto _return_of_get_parent;
-	}
-	ether_addr_copy(mac_dev->addr, mac_addr);
+	if (IS_ERR(mac_addr))
+		dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
+	else
+		ether_addr_copy(mac_dev->addr, mac_addr);
 
 	/* Get the port handles */
 	nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
@@ -855,7 +853,8 @@ static int mac_probe(struct platform_device *_of_dev)
 	if (err < 0)
 		dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
 
-	dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
+	if (!IS_ERR(mac_addr))
+		dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
 
 	priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
 	if (IS_ERR(priv->eth_dev)) {