X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Feth.c;h=04a544c872a07c8e17ee003262a9d50f7bf3f8b1;hb=1ab3a40db0c8b4250eabf16b16cf61e18a0322ad;hp=a2e6f34535e08fa3b6841afe4216879dd47a8897;hpb=7dc57517be8ef4c1466f58d68232a9e4b00c62ae;p=karo-tx-uboot.git

diff --git a/net/eth.c b/net/eth.c
index a2e6f34535..04a544c872 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -32,7 +32,7 @@ void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
 int eth_getenv_enetaddr(char *name, uchar *enetaddr)
 {
 	eth_parse_enetaddr(getenv(name), enetaddr);
-	return is_valid_ether_addr(enetaddr);
+	return is_valid_ethaddr(enetaddr);
 }
 
 int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
@@ -66,19 +66,61 @@ static void eth_env_init(void)
 
 	s = getenv("bootfile");
 	if (s != NULL)
-		copy_filename(BootFile, s, sizeof(BootFile));
+		copy_filename(net_boot_file_name, s,
+			      sizeof(net_boot_file_name));
 }
 
 static int eth_mac_skip(int index)
 {
 	char enetvar[15];
 	char *skip_state;
+
 	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
-	return ((skip_state = getenv(enetvar)) != NULL);
+	skip_state = getenv(enetvar);
+	return skip_state != NULL;
 }
 
 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
+
+	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");
+	}
+}
+
 #ifdef CONFIG_DM_ETH
 /**
  * struct eth_device_priv - private structure for each Ethernet device
@@ -98,6 +140,9 @@ struct eth_uclass_priv {
 	struct udevice *current;
 };
 
+/* eth_errno - This stores the most recent failure code from DM functions */
+static int eth_errno;
+
 static struct eth_uclass_priv *eth_get_uclass_priv(void)
 {
 	struct uclass *uc;
@@ -118,20 +163,32 @@ static void eth_set_current_to_next(void)
 		uclass_first_device(UCLASS_ETH, &uc_priv->current);
 }
 
+/*
+ * Typically this will simply return the active device.
+ * In the case where the most recent active device was unset, this will attempt
+ * to return the first device. If that device doesn't exist or fails to probe,
+ * this function will return NULL.
+ */
 struct udevice *eth_get_dev(void)
 {
 	struct eth_uclass_priv *uc_priv;
 
 	uc_priv = eth_get_uclass_priv();
 	if (!uc_priv->current)
-		uclass_first_device(UCLASS_ETH,
+		eth_errno = uclass_first_device(UCLASS_ETH,
 				    &uc_priv->current);
 	return uc_priv->current;
 }
 
+/*
+ * Typically this will just store a device pointer.
+ * In case it was not probed, we will attempt to do so.
+ * dev may be NULL to unset the active device.
+ */
 static void eth_set_dev(struct udevice *dev)
 {
-	device_probe(dev);
+	if (dev && !device_active(dev))
+		eth_errno = device_probe(dev);
 	eth_get_uclass_priv()->current = dev;
 }
 
@@ -155,7 +212,14 @@ struct udevice *eth_get_dev_by_name(const char *devname)
 
 	uclass_get(UCLASS_ETH, &uc);
 	uclass_foreach_dev(it, uc) {
-		/* We need the seq to be valid, so make sure it's probed */
+		/*
+		 * We need the seq to be valid, so try to probe it.
+		 * If the probe fails, the seq will not match since it will be
+		 * -1 instead of what we are looking for.
+		 * We don't care about errors from probe here. Either they won't
+		 * 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
@@ -217,10 +281,36 @@ 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;
+		}
+
+		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_init(void)
 {
 	struct udevice *current;
 	struct udevice *old_current;
+	int ret = -ENODEV;
 
 	current = eth_get_dev();
 	if (!current) {
@@ -235,30 +325,47 @@ int eth_init(void)
 		if (device_active(current)) {
 			uchar env_enetaddr[6];
 			struct eth_pdata *pdata = current->platdata;
+			int enetaddr_changed = 0;
 
 			/* Sync environment with network device */
 			if (eth_getenv_enetaddr_by_index("eth", current->seq,
-							 env_enetaddr))
+							 env_enetaddr)) {
+				enetaddr_changed = memcmp(pdata->enetaddr,
+					env_enetaddr, 6);
 				memcpy(pdata->enetaddr, env_enetaddr, 6);
-			else
+			} else {
+				memset(env_enetaddr, 0, 6);
+				enetaddr_changed = memcmp(pdata->enetaddr,
+					env_enetaddr, 6);
 				memset(pdata->enetaddr, 0, 6);
+			}
+			if (enetaddr_changed)
+				eth_write_hwaddr(current);
 
-			if (eth_get_ops(current)->start(current) >= 0) {
+			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");
 
-		/* This will ensure the new "current" attempted to probe */
+		/*
+		 * If ethrotate is enabled, this will change "current",
+		 * otherwise we will drop out of this while loop immediately
+		 */
 		eth_try_another(0);
+		/* This will ensure the new "current" attempted to probe */
 		current = eth_get_dev();
 	} while (old_current != current);
 
-	return -ENODEV;
+	return ret;
 }
 
 void eth_halt(void)
@@ -278,6 +385,7 @@ void eth_halt(void)
 int eth_send(void *packet, int length)
 {
 	struct udevice *current;
+	int ret;
 
 	current = eth_get_dev();
 	if (!current)
@@ -286,7 +394,12 @@ int eth_send(void *packet, int length)
 	if (!device_active(current))
 		return -EINVAL;
 
-	return eth_get_ops(current)->send(current, packet, length);
+	ret = eth_get_ops(current)->send(current, packet, length);
+	if (ret < 0) {
+		/* We cannot completely return the error at present */
+		debug("%s: send() returned error %d\n", __func__, ret);
+	}
+	return ret;
 }
 
 int eth_rx(void)
@@ -308,36 +421,17 @@ int eth_rx(void)
 		ret = eth_get_ops(current)->recv(current, &packet);
 		if (ret > 0)
 			net_process_received_packet(packet, ret);
-		else
+		if (ret >= 0 && eth_get_ops(current)->free_pkt)
+			eth_get_ops(current)->free_pkt(current, packet, ret);
+		if (ret <= 0)
 			break;
 	}
 	if (ret == -EAGAIN)
 		ret = 0;
-	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_ether_addr(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);
+	if (ret < 0) {
+		/* We cannot completely return the error at present */
+		debug("%s: recv() returned error %d\n", __func__, ret);
 	}
-
 	return ret;
 }
 
@@ -346,8 +440,7 @@ 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
@@ -360,6 +453,18 @@ int eth_initialize(void)
 		printf("No ethernet found.\n");
 		bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
 	} else {
+		char *ethprime = getenv("ethprime");
+		struct udevice *prime_dev = NULL;
+
+		if (ethprime)
+			prime_dev = eth_get_dev_by_name(ethprime);
+		if (prime_dev) {
+			eth_set_dev(prime_dev);
+			eth_current_changed();
+		} else {
+			eth_set_dev(NULL);
+		}
+
 		bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
 		do {
 			if (num_devices)
@@ -367,6 +472,9 @@ int eth_initialize(void)
 
 			printf("eth%d: %s", dev->seq, dev->name);
 
+			if (ethprime && dev == prime_dev)
+				printf(" [PRIME]");
+
 			eth_write_hwaddr(dev);
 
 			uclass_next_device(&dev);
@@ -412,8 +520,8 @@ static int eth_post_probe(struct udevice *dev)
 		eth_get_ops(dev)->read_rom_hwaddr(dev);
 
 	eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr);
-	if (!is_zero_ether_addr(env_enetaddr)) {
-		if (!is_zero_ether_addr(pdata->enetaddr) &&
+	if (!is_zero_ethaddr(env_enetaddr)) {
+		if (!is_zero_ethaddr(pdata->enetaddr) &&
 		    memcmp(pdata->enetaddr, env_enetaddr, 6)) {
 			printf("\nWarning: %s MAC addresses don't match:\n",
 			       dev->name);
@@ -425,11 +533,11 @@ static int eth_post_probe(struct udevice *dev)
 
 		/* Override the ROM MAC address */
 		memcpy(pdata->enetaddr, env_enetaddr, 6);
-	} else if (is_valid_ether_addr(pdata->enetaddr)) {
+	} else if (is_valid_ethaddr(pdata->enetaddr)) {
 		eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr);
 		printf("\nWarning: %s using MAC address from ROM\n",
 		       dev->name);
-	} else if (is_zero_ether_addr(pdata->enetaddr)) {
+	} else if (is_zero_ethaddr(pdata->enetaddr)) {
 		printf("\nError: %s address not set.\n",
 		       dev->name);
 		return -EINVAL;
@@ -459,16 +567,6 @@ UCLASS_DRIVER(eth) = {
 #endif
 
 #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 {
@@ -550,39 +648,40 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
 
 	eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);
 
-	if (!is_zero_ether_addr(env_enetaddr)) {
-		if (!is_zero_ether_addr(dev->enetaddr) &&
+	if (!is_zero_ethaddr(env_enetaddr)) {
+		if (!is_zero_ethaddr(dev->enetaddr) &&
 		    memcmp(dev->enetaddr, env_enetaddr, 6)) {
 			printf("\nWarning: %s MAC addresses don't match:\n",
-				dev->name);
+			       dev->name);
 			printf("Address in SROM is         %pM\n",
-				dev->enetaddr);
+			       dev->enetaddr);
 			printf("Address in environment is  %pM\n",
-				env_enetaddr);
+			       env_enetaddr);
 		}
 
 		memcpy(dev->enetaddr, env_enetaddr, 6);
-	} else if (is_valid_ether_addr(dev->enetaddr)) {
+	} else if (is_valid_ethaddr(dev->enetaddr)) {
 		eth_setenv_enetaddr_by_index(base_name, eth_number,
 					     dev->enetaddr);
 		printf("\nWarning: %s using MAC address from net device\n",
-			dev->name);
-	} else if (is_zero_ether_addr(dev->enetaddr)) {
+		       dev->name);
+	} else if (is_zero_ethaddr(dev->enetaddr)) {
 		printf("\nError: %s address not set.\n",
 		       dev->name);
 		return -EINVAL;
 	}
 
 	if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
-		if (!is_valid_ether_addr(dev->enetaddr)) {
+		if (!is_valid_ethaddr(dev->enetaddr)) {
 			printf("\nError: %s address %pM illegal value\n",
-				 dev->name, dev->enetaddr);
+			       dev->name, dev->enetaddr);
 			return -EINVAL;
 		}
 
 		ret = dev->write_hwaddr(dev);
 		if (ret)
-			printf("\nWarning: %s failed to set MAC address\n", dev->name);
+			printf("\nWarning: %s failed to set MAC address\n",
+			       dev->name);
 	}
 
 	return ret;
@@ -596,7 +695,8 @@ int eth_register(struct eth_device *dev)
 	assert(strlen(dev->name) < sizeof(dev->name));
 
 	if (!eth_devices) {
-		eth_current = eth_devices = dev;
+		eth_devices = dev;
+		eth_current = dev;
 		eth_current_changed();
 	} else {
 		for (d = eth_devices; d->next != eth_devices; d = d->next)
@@ -643,32 +743,10 @@ 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");
@@ -711,14 +789,14 @@ int eth_initialize(void)
  * mcast_addr: multicast ipaddr from which multicast Mac is made
  * join: 1=join, 0=leave.
  */
-int eth_mcast_join(IPaddr_t mcast_ip, int join)
+int eth_mcast_join(struct in_addr mcast_ip, int join)
 {
 	u8 mcast_mac[6];
 	if (!eth_current || !eth_current->mcast)
 		return -1;
-	mcast_mac[5] = htonl(mcast_ip) & 0xff;
-	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
-	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
+	mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
+	mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
+	mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
 	mcast_mac[2] = 0x5e;
 	mcast_mac[1] = 0x0;
 	mcast_mac[0] = 0x1;
@@ -765,10 +843,21 @@ int eth_init(void)
 	dev = eth_devices;
 	do {
 		uchar env_enetaddr[6];
+		int enetaddr_changed = 0;
 
 		if (eth_getenv_enetaddr_by_index("eth", dev->index,
-						 env_enetaddr))
+						 env_enetaddr)) {
+			enetaddr_changed = memcmp(dev->enetaddr,
+				env_enetaddr, 6);
 			memcpy(dev->enetaddr, env_enetaddr, 6);
+		} else {
+			memset(env_enetaddr, 0, 6);
+			enetaddr_changed = memcmp(dev->enetaddr,
+				env_enetaddr, 6);
+			memset(dev->enetaddr, 0, 6);
+		}
+		if (enetaddr_changed)
+			eth_write_hwaddr(dev, "eth", dev->index);
 
 		dev = dev->next;
 	} while (dev != eth_devices);
@@ -901,7 +990,7 @@ 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)
@@ -915,8 +1004,20 @@ void eth_set_current(void)
 		act = getenv("ethact");
 		env_changed_id = env_id;
 	}
-	if (act != NULL)
+
+	if (act == NULL) {
+		char *ethprime = getenv("ethprime");
+		void *dev = NULL;
+
+		if (ethprime)
+			dev = eth_get_dev_by_name(ethprime);
+		if (dev)
+			eth_set_dev(dev);
+		else
+			eth_set_dev(NULL);
+	} else {
 		eth_set_dev(eth_get_dev_by_name(act));
+	}
 
 	eth_current_changed();
 }