X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=net%2Feth.c;h=c542f4aa3b3b1e4f2e6fbb5db4c0ea579aefe45e;hb=5e68ff3949a3eebf62ba639171814f39c8e46a84;hp=da97095087c1575fbbb9b0d02170ccef615f10cb;hpb=ff819a3a33de2152a52425e4108d41de5fc7fa64;p=oweals%2Fu-boot.git

diff --git a/net/eth.c b/net/eth.c
index da97095087..c542f4aa3b 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -9,11 +9,13 @@
 #include <common.h>
 #include <command.h>
 #include <dm.h>
+#include <environment.h>
 #include <net.h>
 #include <miiphy.h>
 #include <phy.h>
 #include <asm/errno.h>
 #include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -29,13 +31,13 @@ void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
 	}
 }
 
-int eth_getenv_enetaddr(char *name, uchar *enetaddr)
+int eth_getenv_enetaddr(const char *name, uchar *enetaddr)
 {
 	eth_parse_enetaddr(getenv(name), enetaddr);
 	return is_valid_ethaddr(enetaddr);
 }
 
-int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
+int eth_setenv_enetaddr(const char *name, const uchar *enetaddr)
 {
 	char buf[20];
 
@@ -60,16 +62,6 @@ static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
 	return eth_setenv_enetaddr(enetvar, enetaddr);
 }
 
-static void eth_env_init(void)
-{
-	const char *s;
-
-	s = getenv("bootfile");
-	if (s != NULL)
-		copy_filename(net_boot_file_name, s,
-			      sizeof(net_boot_file_name));
-}
-
 static int eth_mac_skip(int index)
 {
 	char enetvar[15];
@@ -82,6 +74,45 @@ static int eth_mac_skip(int index)
 
 static void eth_current_changed(void);
 
+/*
+ * CPU and board-specific Ethernet initializations.  Aliased function
+ * signals caller to move on
+ */
+static int __def_eth_init(bd_t *bis)
+{
+	return -1;
+}
+int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
+int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
+
+static void eth_common_init(void)
+{
+	bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
+	miiphy_init();
+#endif
+
+#ifdef CONFIG_PHYLIB
+	phy_init();
+#endif
+
+	/*
+	 * If board-specific initialization exists, call it.
+	 * If not, call a CPU-specific one
+	 */
+	if (board_eth_init != __def_eth_init) {
+		if (board_eth_init(gd->bd) < 0)
+			printf("Board Net Initialization Failed\n");
+	} else if (cpu_eth_init != __def_eth_init) {
+		if (cpu_eth_init(gd->bd) < 0)
+			printf("CPU Net Initialization Failed\n");
+	} else {
+#ifndef CONFIG_DM_ETH
+		printf("Net Initialization Skipped\n");
+#endif
+	}
+}
+
 #ifdef CONFIG_DM_ETH
 /**
  * struct eth_device_priv - private structure for each Ethernet device
@@ -148,8 +179,12 @@ struct udevice *eth_get_dev(void)
  */
 static void eth_set_dev(struct udevice *dev)
 {
-	if (dev && !device_active(dev))
+	if (dev && !device_active(dev)) {
 		eth_errno = device_probe(dev);
+		if (eth_errno)
+			dev = NULL;
+	}
+
 	eth_get_uclass_priv()->current = dev;
 }
 
@@ -164,10 +199,11 @@ struct udevice *eth_get_dev_by_name(const char *devname)
 	const char *startp = NULL;
 	struct udevice *it;
 	struct uclass *uc;
+	int len = strlen("eth");
 
 	/* Must be longer than 3 to be an alias */
-	if (strlen(devname) > strlen("eth")) {
-		startp = devname + strlen("eth");
+	if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
+		startp = devname + len;
 		seq = simple_strtoul(startp, &endp, 10);
 	}
 
@@ -181,10 +217,9 @@ struct udevice *eth_get_dev_by_name(const char *devname)
 		 * match an alias or it will match a literal name and we'll pick
 		 * up the error when we try to probe again in eth_set_dev().
 		 */
-		device_probe(it);
-		/*
-		 * Check for the name or the sequence number to match
-		 */
+		if (device_probe(it))
+			continue;
+		/* Check for the name or the sequence number to match */
 		if (strcmp(it->name, devname) == 0 ||
 		    (endp > startp && it->seq == seq))
 			return it;
@@ -242,6 +277,64 @@ int eth_get_dev_index(void)
 	return -1;
 }
 
+static int eth_write_hwaddr(struct udevice *dev)
+{
+	struct eth_pdata *pdata = dev->platdata;
+	int ret = 0;
+
+	if (!dev || !device_active(dev))
+		return -EINVAL;
+
+	/* seq is valid since the device is active */
+	if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) {
+		if (!is_valid_ethaddr(pdata->enetaddr)) {
+			printf("\nError: %s address %pM illegal value\n",
+			       dev->name, pdata->enetaddr);
+			return -EINVAL;
+		}
+
+		/*
+		 * Drivers are allowed to decide not to implement this at
+		 * run-time. E.g. Some devices may use it and some may not.
+		 */
+		ret = eth_get_ops(dev)->write_hwaddr(dev);
+		if (ret == -ENOSYS)
+			ret = 0;
+		if (ret)
+			printf("\nWarning: %s failed to set MAC address\n",
+			       dev->name);
+	}
+
+	return ret;
+}
+
+static int on_ethaddr(const char *name, const char *value, enum env_op op,
+	int flags)
+{
+	int index;
+	int retval;
+	struct udevice *dev;
+
+	/* look for an index after "eth" */
+	index = simple_strtoul(name + 3, NULL, 10);
+
+	retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev);
+	if (!retval) {
+		struct eth_pdata *pdata = dev->platdata;
+		switch (op) {
+		case env_op_create:
+		case env_op_overwrite:
+			eth_parse_enetaddr(value, pdata->enetaddr);
+			break;
+		case env_op_delete:
+			memset(pdata->enetaddr, 0, 6);
+		}
+	}
+
+	return 0;
+}
+U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
+
 int eth_init(void)
 {
 	struct udevice *current;
@@ -256,33 +349,27 @@ int eth_init(void)
 
 	old_current = current;
 	do {
-		debug("Trying %s\n", current->name);
-
-		if (device_active(current)) {
-			uchar env_enetaddr[6];
-			struct eth_pdata *pdata = current->platdata;
-
-			/* Sync environment with network device */
-			if (eth_getenv_enetaddr_by_index("eth", current->seq,
-							 env_enetaddr))
-				memcpy(pdata->enetaddr, env_enetaddr, 6);
-			else
-				memset(pdata->enetaddr, 0, 6);
-
-			ret = eth_get_ops(current)->start(current);
-			if (ret >= 0) {
-				struct eth_device_priv *priv =
-					current->uclass_priv;
-
-				priv->state = ETH_STATE_ACTIVE;
-				return 0;
+		if (current) {
+			debug("Trying %s\n", current->name);
+
+			if (device_active(current)) {
+				ret = eth_get_ops(current)->start(current);
+				if (ret >= 0) {
+					struct eth_device_priv *priv =
+						current->uclass_priv;
+
+					priv->state = ETH_STATE_ACTIVE;
+					return 0;
+				}
+			} else {
+				ret = eth_errno;
 			}
+
+			debug("FAIL\n");
 		} else {
-			ret = eth_errno;
+			debug("PROBE FAIL\n");
 		}
 
-		debug("FAIL\n");
-
 		/*
 		 * If ethrotate is enabled, this will change "current",
 		 * otherwise we will drop out of this while loop immediately
@@ -309,6 +396,17 @@ void eth_halt(void)
 	priv->state = ETH_STATE_PASSIVE;
 }
 
+int eth_is_active(struct udevice *dev)
+{
+	struct eth_device_priv *priv;
+
+	if (!dev || !device_active(dev))
+		return 0;
+
+	priv = dev_get_uclass_priv(dev);
+	return priv->state == ETH_STATE_ACTIVE;
+}
+
 int eth_send(void *packet, int length)
 {
 	struct udevice *current;
@@ -333,6 +431,7 @@ int eth_rx(void)
 {
 	struct udevice *current;
 	uchar *packet;
+	int flags;
 	int ret;
 	int i;
 
@@ -344,8 +443,10 @@ int eth_rx(void)
 		return -EINVAL;
 
 	/* Process up to 32 packets at one time */
+	flags = ETH_RECV_CHECK_DEVICE;
 	for (i = 0; i < 32; i++) {
-		ret = eth_get_ops(current)->recv(current, &packet);
+		ret = eth_get_ops(current)->recv(current, flags, &packet);
+		flags = 0;
 		if (ret > 0)
 			net_process_received_packet(packet, ret);
 		if (ret >= 0 && eth_get_ops(current)->free_pkt)
@@ -362,38 +463,12 @@ int eth_rx(void)
 	return ret;
 }
 
-static int eth_write_hwaddr(struct udevice *dev)
-{
-	struct eth_pdata *pdata = dev->platdata;
-	int ret = 0;
-
-	if (!dev || !device_active(dev))
-		return -EINVAL;
-
-	/* seq is valid since the device is active */
-	if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) {
-		if (!is_valid_ethaddr(pdata->enetaddr)) {
-			printf("\nError: %s address %pM illegal value\n",
-			       dev->name, pdata->enetaddr);
-			return -EINVAL;
-		}
-
-		ret = eth_get_ops(dev)->write_hwaddr(dev);
-		if (ret)
-			printf("\nWarning: %s failed to set MAC address\n",
-			       dev->name);
-	}
-
-	return ret;
-}
-
 int eth_initialize(void)
 {
 	int num_devices = 0;
 	struct udevice *dev;
 
-	bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
-	eth_env_init();
+	eth_common_init();
 
 	/*
 	 * Devices need to write the hwaddr even if not started so that Linux
@@ -491,9 +566,15 @@ static int eth_post_probe(struct udevice *dev)
 		printf("\nWarning: %s using MAC address from ROM\n",
 		       dev->name);
 	} else if (is_zero_ethaddr(pdata->enetaddr)) {
+#ifdef CONFIG_NET_RANDOM_ETHADDR
+		net_random_ethaddr(pdata->enetaddr);
+		printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
+		       dev->name, dev->seq, pdata->enetaddr);
+#else
 		printf("\nError: %s address not set.\n",
 		       dev->name);
 		return -EINVAL;
+#endif
 	}
 
 	return 0;
@@ -501,8 +582,13 @@ static int eth_post_probe(struct udevice *dev)
 
 static int eth_pre_remove(struct udevice *dev)
 {
+	struct eth_pdata *pdata = dev->platdata;
+
 	eth_get_ops(dev)->stop(dev);
 
+	/* clear the MAC address */
+	memset(pdata->enetaddr, 0, 6);
+
 	return 0;
 }
 
@@ -517,19 +603,9 @@ UCLASS_DRIVER(eth) = {
 	.per_device_auto_alloc_size = sizeof(struct eth_device_priv),
 	.flags		= DM_UC_FLAG_SEQ_ALIAS,
 };
-#endif
+#endif /* #ifdef CONFIG_DM_ETH */
 
 #ifndef CONFIG_DM_ETH
-/*
- * CPU and board-specific Ethernet initializations.  Aliased function
- * signals caller to move on
- */
-static int __def_eth_init(bd_t *bis)
-{
-	return -1;
-}
-int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
-int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
 
 #ifdef CONFIG_API
 static struct {
@@ -603,6 +679,37 @@ int eth_get_dev_index(void)
 	return eth_current->index;
 }
 
+static int on_ethaddr(const char *name, const char *value, enum env_op op,
+	int flags)
+{
+	int index;
+	struct eth_device *dev;
+
+	if (!eth_devices)
+		return 0;
+
+	/* look for an index after "eth" */
+	index = simple_strtoul(name + 3, NULL, 10);
+
+	dev = eth_devices;
+	do {
+		if (dev->index == index) {
+			switch (op) {
+			case env_op_create:
+			case env_op_overwrite:
+				eth_parse_enetaddr(value, dev->enetaddr);
+				break;
+			case env_op_delete:
+				memset(dev->enetaddr, 0, 6);
+			}
+		}
+		dev = dev->next;
+	} while (dev != eth_devices);
+
+	return 0;
+}
+U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
+
 int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
 		   int eth_number)
 {
@@ -629,9 +736,15 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
 		printf("\nWarning: %s using MAC address from net device\n",
 		       dev->name);
 	} else if (is_zero_ethaddr(dev->enetaddr)) {
+#ifdef CONFIG_NET_RANDOM_ETHADDR
+		net_random_ethaddr(dev->enetaddr);
+		printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
+		       dev->name, eth_number, dev->enetaddr);
+#else
 		printf("\nError: %s address not set.\n",
 		       dev->name);
 		return -EINVAL;
+#endif
 	}
 
 	if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
@@ -706,33 +819,10 @@ int eth_unregister(struct eth_device *dev)
 int eth_initialize(void)
 {
 	int num_devices = 0;
+
 	eth_devices = NULL;
 	eth_current = NULL;
-
-	bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
-	miiphy_init();
-#endif
-
-#ifdef CONFIG_PHYLIB
-	phy_init();
-#endif
-
-	eth_env_init();
-
-	/*
-	 * If board-specific initialization exists, call it.
-	 * If not, call a CPU-specific one
-	 */
-	if (board_eth_init != __def_eth_init) {
-		if (board_eth_init(gd->bd) < 0)
-			printf("Board Net Initialization Failed\n");
-	} else if (cpu_eth_init != __def_eth_init) {
-		if (cpu_eth_init(gd->bd) < 0)
-			printf("CPU Net Initialization Failed\n");
-	} else {
-		printf("Net Initialization Skipped\n");
-	}
+	eth_common_init();
 
 	if (!eth_devices) {
 		puts("No ethernet found.\n");
@@ -818,25 +908,13 @@ u32 ether_crc(size_t len, unsigned char const *p)
 
 int eth_init(void)
 {
-	struct eth_device *old_current, *dev;
+	struct eth_device *old_current;
 
 	if (!eth_current) {
 		puts("No ethernet found.\n");
 		return -ENODEV;
 	}
 
-	/* Sync environment with network devices */
-	dev = eth_devices;
-	do {
-		uchar env_enetaddr[6];
-
-		if (eth_getenv_enetaddr_by_index("eth", dev->index,
-						 env_enetaddr))
-			memcpy(dev->enetaddr, env_enetaddr, 6);
-
-		dev = dev->next;
-	} while (dev != eth_devices);
-
 	old_current = eth_current;
 	do {
 		debug("Trying %s\n", eth_current->name);
@@ -864,6 +942,11 @@ void eth_halt(void)
 	eth_current->state = ETH_STATE_PASSIVE;
 }
 
+int eth_is_active(struct eth_device *dev)
+{
+	return dev && dev->state == ETH_STATE_ACTIVE;
+}
+
 int eth_send(void *packet, int length)
 {
 	if (!eth_current)
@@ -965,7 +1048,7 @@ void eth_try_another(int first_restart)
 	eth_current_changed();
 
 	if (first_failed == eth_get_dev())
-		NetRestartWrap = 1;
+		net_restart_wrap = 1;
 }
 
 void eth_set_current(void)