]> git.kernelconcepts.de Git - karo-tx-uboot.git/blobdiff - net/eth.c
merged tx6dl-devel into denx master branch
[karo-tx-uboot.git] / net / eth.c
index de6d5c6040ddeb2fc126779fed944e54834e84c6..77ea5580aa00f36726b0e8dcf7ee01be685f43b3 100644 (file)
--- a/net/eth.c
+++ b/net/eth.c
@@ -2,29 +2,14 @@
  * (C) Copyright 2001-2010
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <command.h>
 #include <net.h>
 #include <miiphy.h>
+#include <phy.h>
 
 void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
 {
@@ -53,14 +38,22 @@ int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
        return setenv(name, buf);
 }
 
-int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr)
+int eth_getenv_enetaddr_by_index(const char *base_name, int index,
+                                uchar *enetaddr)
 {
        char enetvar[32];
-       sprintf(enetvar, index ? "eth%daddr" : "ethaddr", index);
+       sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
        return eth_getenv_enetaddr(enetvar, enetaddr);
 }
 
-#ifdef CONFIG_NET_MULTI
+static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
+                                uchar *enetaddr)
+{
+       char enetvar[32];
+       sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
+       return eth_setenv_enetaddr(enetvar, enetaddr);
+}
+
 
 static int eth_mac_skip(int index)
 {
@@ -70,6 +63,28 @@ static int eth_mac_skip(int index)
        return ((skip_state = getenv(enetvar)) != NULL);
 }
 
+#ifdef CONFIG_RANDOM_MACADDR
+void eth_random_enetaddr(uchar *enetaddr)
+{
+       uint32_t rval;
+
+       srand(rand() ^ get_timer(0));
+
+       rval = rand();
+       enetaddr[0] = rval & 0xff;
+       enetaddr[1] = (rval >> 8) & 0xff;
+       enetaddr[2] = (rval >> 16) & 0xff;
+
+       rval = rand();
+       enetaddr[3] = rval & 0xff;
+       enetaddr[4] = (rval >> 8) & 0xff;
+       enetaddr[5] = (rval >> 16) & 0xff;
+
+       /* make sure it's local and unicast */
+       enetaddr[0] = (enetaddr[0] | 0x02) & ~0x01;
+}
+#endif
+
 /*
  * CPU and board-specific Ethernet initializations.  Aliased function
  * signals caller to move on
@@ -81,31 +96,24 @@ static int __def_eth_init(bd_t *bis)
 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")));
 
-extern int mv6436x_eth_initialize(bd_t *);
-extern int mv6446x_eth_initialize(bd_t *);
-
 #ifdef CONFIG_API
-extern void (*push_packet)(volatile void *, int);
-
 static struct {
        uchar data[PKTSIZE];
        int length;
 } eth_rcv_bufs[PKTBUFSRX];
 
-static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
+static unsigned int eth_rcv_current, eth_rcv_last;
 #endif
 
-static struct eth_device *eth_devices, *eth_current;
-
-struct eth_device *eth_get_dev(void)
-{
-       return eth_current;
-}
+static struct eth_device *eth_devices;
+struct eth_device *eth_current;
 
-struct eth_device *eth_get_dev_by_name(char *devname)
+struct eth_device *eth_get_dev_by_name(const char *devname)
 {
        struct eth_device *dev, *target_dev;
 
+       BUG_ON(devname == NULL);
+
        if (!eth_devices)
                return NULL;
 
@@ -125,7 +133,6 @@ struct eth_device *eth_get_dev_by_name(char *devname)
 struct eth_device *eth_get_dev_by_index(int index)
 {
        struct eth_device *dev, *target_dev;
-       int idx = 0;
 
        if (!eth_devices)
                return NULL;
@@ -133,150 +140,203 @@ struct eth_device *eth_get_dev_by_index(int index)
        dev = eth_devices;
        target_dev = NULL;
        do {
-               if (idx == index) {
+               if (dev->index == index) {
                        target_dev = dev;
                        break;
                }
                dev = dev->next;
-               idx++;
        } while (dev != eth_devices);
 
        return target_dev;
 }
 
-int eth_get_dev_index (void)
+int eth_get_dev_index(void)
 {
-       struct eth_device *dev;
-       int num = 0;
+       if (!eth_current)
+               return -1;
 
-       if (!eth_devices) {
-               return (-1);
+       return eth_current->index;
+}
+
+static void eth_current_changed(void)
+{
+       char *act = getenv("ethact");
+       /* update current ethernet name */
+       if (eth_current) {
+               if (act == NULL || strcmp(act, eth_current->name) != 0)
+                       setenv("ethact", eth_current->name);
        }
+       /*
+        * remove the variable completely if there is no active
+        * interface
+        */
+       else if (act != NULL)
+               setenv("ethact", NULL);
+}
 
-       for (dev = eth_devices; dev; dev = dev->next) {
-               if (dev == eth_current)
-                       break;
-               ++num;
+int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
+                  int eth_number)
+{
+       unsigned char env_enetaddr[6];
+       int ret = 0;
+
+       eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);
+
+       if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
+               if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
+                               memcmp(dev->enetaddr, env_enetaddr, 6)) {
+                       printf("\nWarning: %s MAC addresses don't match:\n",
+                               dev->name);
+                       printf("Address in SROM is         %pM\n",
+                               dev->enetaddr);
+                       printf("Address in environment is  %pM\n",
+                               env_enetaddr);
+               }
+
+               memcpy(dev->enetaddr, env_enetaddr, 6);
+       } else if (is_valid_ether_addr(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);
        }
 
-       if (dev) {
-               return (num);
+       if (dev->write_hwaddr &&
+                       !eth_mac_skip(eth_number)) {
+               if (!is_valid_ether_addr(dev->enetaddr))
+                       return -1;
+
+               ret = dev->write_hwaddr(dev);
        }
 
-       return (0);
+       return ret;
 }
 
-int eth_register(struct eth_devicedev)
+int eth_register(struct eth_device *dev)
 {
        struct eth_device *d;
+       static int index;
+
+       assert(strlen(dev->name) < sizeof(dev->name));
 
        if (!eth_devices) {
                eth_current = eth_devices = dev;
-#ifdef CONFIG_NET_MULTI
-               /* update current ethernet name */
-               {
-                       char *act = getenv("ethact");
-                       if (act == NULL || strcmp(act, eth_current->name) != 0)
-                               setenv("ethact", eth_current->name);
-               }
-#endif
+               eth_current_changed();
        } else {
-               for (d=eth_devices; d->next!=eth_devices; d=d->next)
+               for (d = eth_devices; d->next != eth_devices; d = d->next)
                        ;
                d->next = dev;
        }
 
        dev->state = ETH_STATE_INIT;
        dev->next  = eth_devices;
+       dev->index = index++;
 
        return 0;
 }
 
-int eth_initialize(bd_t *bis)
+int eth_unregister(struct eth_device *dev)
 {
-       unsigned char env_enetaddr[6];
-       int eth_number = 0;
+       struct eth_device *cur;
+
+       /* No device */
+       if (!eth_devices)
+               return -1;
+
+       for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
+            cur = cur->next)
+               ;
+
+       /* Device not found */
+       if (cur->next != dev)
+               return -1;
 
+       cur->next = dev->next;
+
+       if (eth_devices == dev)
+               eth_devices = dev->next == eth_devices ? NULL : dev->next;
+
+       if (eth_current == dev) {
+               eth_current = eth_devices;
+               eth_current_changed();
+       }
+
+       return 0;
+}
+
+static void eth_env_init(bd_t *bis)
+{
+       const char *s;
+
+       if ((s = getenv("bootfile")) != NULL)
+               copy_filename(BootFile, s, sizeof(BootFile));
+}
+
+int eth_initialize(bd_t *bis)
+{
+       int num_devices = 0;
        eth_devices = NULL;
        eth_current = NULL;
 
-       show_boot_progress (64);
+       bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
        miiphy_init();
 #endif
-       /* Try board-specific initialization first.  If it fails or isn't
-        * present, try the cpu-specific initialization */
-       if (board_eth_init(bis) < 0)
-               cpu_eth_init(bis);
 
-#if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
-       mv6436x_eth_initialize(bis);
-#endif
-#if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
-       mv6446x_eth_initialize(bis);
+#ifdef CONFIG_PHYLIB
+       phy_init();
 #endif
+
+       eth_env_init(bis);
+
+       /*
+        * 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(bis) < 0)
+                       printf("Board Net Initialization Failed\n");
+       } else if (cpu_eth_init != __def_eth_init) {
+               if (cpu_eth_init(bis) < 0)
+                       printf("CPU Net Initialization Failed\n");
+       } else
+               printf("Net Initialization Skipped\n");
+
        if (!eth_devices) {
-               puts ("No ethernet found.\n");
-               show_boot_progress (-64);
+               puts("No ethernet found.\n");
+               bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
        } else {
                struct eth_device *dev = eth_devices;
-               char *ethprime = getenv ("ethprime");
+               char *ethprime = getenv("ethprime");
 
-               show_boot_progress (65);
+               bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
                do {
-                       if (eth_number)
-                               puts (", ");
+                       if (dev->index)
+                               puts(", ");
 
                        printf("%s", dev->name);
 
-                       if (ethprime && strcmp (dev->name, ethprime) == 0) {
+                       if (ethprime && strcmp(dev->name, ethprime) == 0) {
                                eth_current = dev;
-                               puts (" [PRIME]");
+                               puts(" [PRIME]");
                        }
 
                        if (strchr(dev->name, ' '))
-                               puts("\nWarning: eth device name has a space!\n");
-
-                       eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
-
-                       if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
-                               if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
-                                   memcmp(dev->enetaddr, env_enetaddr, 6))
-                               {
-                                       printf ("\nWarning: %s MAC addresses don't match:\n",
-                                               dev->name);
-                                       printf ("Address in SROM is         %pM\n",
-                                               dev->enetaddr);
-                                       printf ("Address in environment is  %pM\n",
-                                               env_enetaddr);
-                               }
-
-                               memcpy(dev->enetaddr, env_enetaddr, 6);
-                       }
-                       if (dev->write_hwaddr &&
-                               !eth_mac_skip(eth_number) &&
-                               is_valid_ether_addr(dev->enetaddr)) {
-                               dev->write_hwaddr(dev);
-                       }
+                               puts("\nWarning: eth device name has a space!"
+                                       "\n");
+
+                       if (eth_write_hwaddr(dev, "eth", dev->index))
+                               puts("\nWarning: failed to set MAC address\n");
 
-                       eth_number++;
                        dev = dev->next;
-               } while(dev != eth_devices);
-
-#ifdef CONFIG_NET_MULTI
-               /* update current ethernet name */
-               if (eth_current) {
-                       char *act = getenv("ethact");
-                       if (act == NULL || strcmp(act, eth_current->name) != 0)
-                               setenv("ethact", eth_current->name);
-               } else
-                       setenv("ethact", NULL);
-#endif
+                       num_devices++;
+               } while (dev != eth_devices);
 
-               putc ('\n');
+               eth_current_changed();
+               putc('\n');
        }
 
-       return eth_number;
+       return num_devices;
 }
 
 #ifdef CONFIG_MCAST_TFTP
@@ -284,9 +344,9 @@ int eth_initialize(bd_t *bis)
  * mcast_addr: multicast ipaddr from which multicast Mac is made
  * join: 1=join, 0=leave.
  */
-int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
+int eth_mcast_join(IPaddr_t mcast_ip, u8 join)
 {
- u8 mcast_mac[6];
      u8 mcast_mac[6];
        if (!eth_current || !eth_current->mcast)
                return -1;
        mcast_mac[5] = htonl(mcast_ip) & 0xff;
@@ -303,7 +363,7 @@ int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
  * some other adapter -- hash tables
  */
 #define CRCPOLY_LE 0xedb88320
-u32 ether_crc (size_t len, unsigned char const *p)
+u32 ether_crc(size_t len, unsigned char const *p)
 {
        int i;
        u32 crc;
@@ -327,24 +387,22 @@ u32 ether_crc (size_t len, unsigned char const *p)
 
 int eth_init(bd_t *bis)
 {
-       int eth_number;
        struct eth_device *old_current, *dev;
 
        if (!eth_current) {
-               puts ("No ethernet found.\n");
+               puts("No ethernet found.\n");
                return -1;
        }
 
        /* Sync environment with network devices */
-       eth_number = 0;
        dev = eth_devices;
        do {
                uchar env_enetaddr[6];
 
-               if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
+               if (eth_getenv_enetaddr_by_index("eth", dev->index,
+                                                env_enetaddr))
                        memcpy(dev->enetaddr, env_enetaddr, 6);
 
-               ++eth_number;
                dev = dev->next;
        } while (dev != eth_devices);
 
@@ -352,7 +410,7 @@ int eth_init(bd_t *bis)
        do {
                debug("Trying %s\n", eth_current->name);
 
-               if (eth_current->init(eth_current,bis) >= 0) {
+               if (eth_current->init(eth_current, bis) >= 0) {
                        eth_current->state = ETH_STATE_ACTIVE;
 
                        return 0;
@@ -375,7 +433,7 @@ void eth_halt(void)
        eth_current->state = ETH_STATE_PASSIVE;
 }
 
-int eth_send(volatile void *packet, int length)
+int eth_send(void *packet, int length)
 {
        if (!eth_current)
                return -1;
@@ -392,9 +450,9 @@ int eth_rx(void)
 }
 
 #ifdef CONFIG_API
-static void eth_save_packet(volatile void *packet, int length)
+static void eth_save_packet(void *packet, int length)
 {
-       volatile char *p = packet;
+       char *p = packet;
        int i;
 
        if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
@@ -410,9 +468,9 @@ static void eth_save_packet(volatile void *packet, int length)
        eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 }
 
-int eth_receive(volatile void *packet, int length)
+int eth_receive(void *packet, int length)
 {
-       volatile char *p = packet;
+       char *p = packet;
        void *pp = push_packet;
        int i;
 
@@ -425,10 +483,7 @@ int eth_receive(volatile void *packet, int length)
                        return -1;
        }
 
-       if (length < eth_rcv_bufs[eth_rcv_current].length)
-               return -1;
-
-       length = eth_rcv_bufs[eth_rcv_current].length;
+       length = min(eth_rcv_bufs[eth_rcv_current].length, length);
 
        for (i = 0; i < length; i++)
                p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
@@ -440,46 +495,36 @@ int eth_receive(volatile void *packet, int length)
 
 void eth_try_another(int first_restart)
 {
-       static struct eth_device *first_failed = NULL;
+       static struct eth_device *first_failed;
        char *ethrotate;
 
        /*
         * Do not rotate between network interfaces when
         * 'ethrotate' variable is set to 'no'.
         */
-       if (((ethrotate = getenv ("ethrotate")) != NULL) &&
-           (strcmp(ethrotate, "no") == 0))
+       ethrotate = getenv("ethrotate");
+       if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
                return;
 
        if (!eth_current)
                return;
 
-       if (first_restart) {
+       if (first_restart)
                first_failed = eth_current;
-       }
 
        eth_current = eth_current->next;
 
-#ifdef CONFIG_NET_MULTI
-       /* update current ethernet name */
-       {
-               char *act = getenv("ethact");
-               if (act == NULL || strcmp(act, eth_current->name) != 0)
-                       setenv("ethact", eth_current->name);
-       }
-#endif
+       eth_current_changed();
 
-       if (first_failed == eth_current) {
+       if (first_failed == eth_current)
                NetRestartWrap = 1;
-       }
 }
 
-#ifdef CONFIG_NET_MULTI
 void eth_set_current(void)
 {
-       static char *act = NULL;
-       static int  env_changed_id = 0;
-       struct eth_deviceold_current;
+       static char *act;
+       static int  env_changed_id;
+       struct eth_device *old_current;
        int     env_id;
 
        if (!eth_current)       /* XXX no current */
@@ -499,39 +544,10 @@ void eth_set_current(void)
                } while (old_current != eth_current);
        }
 
-       setenv("ethact", eth_current->name);
+       eth_current_changed();
 }
-#endif
 
-char *eth_get_name (void)
+char *eth_get_name(void)
 {
-       return (eth_current ? eth_current->name : "unknown");
+       return eth_current ? eth_current->name : "unknown";
 }
-
-#else /* !CONFIG_NET_MULTI */
-
-#warning Ethernet driver is deprecated.  Please update to use CONFIG_NET_MULTI
-
-extern int at91rm9200_miiphy_initialize(bd_t *bis);
-extern int mcf52x2_miiphy_initialize(bd_t *bis);
-extern int ns7520_miiphy_initialize(bd_t *bis);
-
-
-int eth_initialize(bd_t *bis)
-{
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-       miiphy_init();
-#endif
-
-#if defined(CONFIG_AT91RM9200)
-       at91rm9200_miiphy_initialize(bis);
-#endif
-#if defined(CONFIG_MCF52x2)
-       mcf52x2_miiphy_initialize(bis);
-#endif
-#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
-       ns7520_miiphy_initialize(bis);
-#endif
-       return 0;
-}
-#endif