mirror of
https://github.com/AsahiLinux/u-boot
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ac1d313806
eth_get_dev() can return NULL which means device_probe() fails for that ethernet device. Add return value check in various places or U-Boot will crash due to NULL pointer access. With this commit, 'dm_test_eth_act' test case passes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
1086 lines
23 KiB
C
1086 lines
23 KiB
C
/*
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* (C) Copyright 2001-2015
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* Joe Hershberger, National Instruments
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <environment.h>
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#include <net.h>
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#include <miiphy.h>
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#include <phy.h>
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#include <asm/errno.h>
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#include <dm/device-internal.h>
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#include <dm/uclass-internal.h>
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DECLARE_GLOBAL_DATA_PTR;
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void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
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{
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char *end;
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int i;
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for (i = 0; i < 6; ++i) {
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enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
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if (addr)
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addr = (*end) ? end + 1 : end;
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}
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}
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int eth_getenv_enetaddr(const char *name, uchar *enetaddr)
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{
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eth_parse_enetaddr(getenv(name), enetaddr);
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return is_valid_ethaddr(enetaddr);
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}
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int eth_setenv_enetaddr(const char *name, const uchar *enetaddr)
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{
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char buf[20];
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sprintf(buf, "%pM", enetaddr);
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return setenv(name, buf);
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}
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int eth_getenv_enetaddr_by_index(const char *base_name, int index,
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uchar *enetaddr)
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{
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char enetvar[32];
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sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
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return eth_getenv_enetaddr(enetvar, enetaddr);
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}
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static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
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uchar *enetaddr)
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{
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char enetvar[32];
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sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
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return eth_setenv_enetaddr(enetvar, enetaddr);
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}
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static int eth_mac_skip(int index)
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{
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char enetvar[15];
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char *skip_state;
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sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
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skip_state = getenv(enetvar);
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return skip_state != NULL;
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}
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static void eth_current_changed(void);
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/*
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* CPU and board-specific Ethernet initializations. Aliased function
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* signals caller to move on
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*/
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static int __def_eth_init(bd_t *bis)
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{
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return -1;
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}
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int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
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int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
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static void eth_common_init(void)
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{
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bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
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#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
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miiphy_init();
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#endif
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#ifdef CONFIG_PHYLIB
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phy_init();
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#endif
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/*
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* If board-specific initialization exists, call it.
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* If not, call a CPU-specific one
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*/
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if (board_eth_init != __def_eth_init) {
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if (board_eth_init(gd->bd) < 0)
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printf("Board Net Initialization Failed\n");
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} else if (cpu_eth_init != __def_eth_init) {
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if (cpu_eth_init(gd->bd) < 0)
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printf("CPU Net Initialization Failed\n");
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} else {
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#ifndef CONFIG_DM_ETH
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printf("Net Initialization Skipped\n");
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#endif
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}
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}
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#ifdef CONFIG_DM_ETH
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/**
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* struct eth_device_priv - private structure for each Ethernet device
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*
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* @state: The state of the Ethernet MAC driver (defined by enum eth_state_t)
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*/
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struct eth_device_priv {
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enum eth_state_t state;
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};
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/**
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* struct eth_uclass_priv - The structure attached to the uclass itself
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*
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* @current: The Ethernet device that the network functions are using
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*/
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struct eth_uclass_priv {
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struct udevice *current;
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};
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/* eth_errno - This stores the most recent failure code from DM functions */
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static int eth_errno;
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static struct eth_uclass_priv *eth_get_uclass_priv(void)
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{
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struct uclass *uc;
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uclass_get(UCLASS_ETH, &uc);
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assert(uc);
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return uc->priv;
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}
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static void eth_set_current_to_next(void)
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{
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struct eth_uclass_priv *uc_priv;
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uc_priv = eth_get_uclass_priv();
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if (uc_priv->current)
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uclass_next_device(&uc_priv->current);
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if (!uc_priv->current)
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uclass_first_device(UCLASS_ETH, &uc_priv->current);
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}
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/*
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* Typically this will simply return the active device.
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* In the case where the most recent active device was unset, this will attempt
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* to return the first device. If that device doesn't exist or fails to probe,
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* this function will return NULL.
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*/
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struct udevice *eth_get_dev(void)
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{
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struct eth_uclass_priv *uc_priv;
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uc_priv = eth_get_uclass_priv();
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if (!uc_priv->current)
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eth_errno = uclass_first_device(UCLASS_ETH,
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&uc_priv->current);
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return uc_priv->current;
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}
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/*
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* Typically this will just store a device pointer.
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* In case it was not probed, we will attempt to do so.
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* dev may be NULL to unset the active device.
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*/
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static void eth_set_dev(struct udevice *dev)
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{
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if (dev && !device_active(dev)) {
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eth_errno = device_probe(dev);
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if (eth_errno)
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dev = NULL;
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}
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eth_get_uclass_priv()->current = dev;
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}
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/*
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* Find the udevice that either has the name passed in as devname or has an
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* alias named devname.
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*/
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struct udevice *eth_get_dev_by_name(const char *devname)
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{
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int seq = -1;
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char *endp = NULL;
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const char *startp = NULL;
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struct udevice *it;
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struct uclass *uc;
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int len = strlen("eth");
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/* Must be longer than 3 to be an alias */
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if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
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startp = devname + len;
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seq = simple_strtoul(startp, &endp, 10);
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}
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uclass_get(UCLASS_ETH, &uc);
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uclass_foreach_dev(it, uc) {
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/*
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* We need the seq to be valid, so try to probe it.
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* If the probe fails, the seq will not match since it will be
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* -1 instead of what we are looking for.
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* We don't care about errors from probe here. Either they won't
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* match an alias or it will match a literal name and we'll pick
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* up the error when we try to probe again in eth_set_dev().
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*/
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if (device_probe(it))
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continue;
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/* Check for the name or the sequence number to match */
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if (strcmp(it->name, devname) == 0 ||
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(endp > startp && it->seq == seq))
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return it;
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}
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return NULL;
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}
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unsigned char *eth_get_ethaddr(void)
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{
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struct eth_pdata *pdata;
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if (eth_get_dev()) {
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pdata = eth_get_dev()->platdata;
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return pdata->enetaddr;
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}
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return NULL;
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}
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/* Set active state without calling start on the driver */
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int eth_init_state_only(void)
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{
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struct udevice *current;
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struct eth_device_priv *priv;
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current = eth_get_dev();
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if (!current || !device_active(current))
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return -EINVAL;
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priv = current->uclass_priv;
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priv->state = ETH_STATE_ACTIVE;
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return 0;
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}
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/* Set passive state without calling stop on the driver */
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void eth_halt_state_only(void)
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{
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struct udevice *current;
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struct eth_device_priv *priv;
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current = eth_get_dev();
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if (!current || !device_active(current))
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return;
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priv = current->uclass_priv;
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priv->state = ETH_STATE_PASSIVE;
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}
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int eth_get_dev_index(void)
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{
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if (eth_get_dev())
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return eth_get_dev()->seq;
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return -1;
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}
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static int eth_write_hwaddr(struct udevice *dev)
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{
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struct eth_pdata *pdata = dev->platdata;
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int ret = 0;
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if (!dev || !device_active(dev))
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return -EINVAL;
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/* seq is valid since the device is active */
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if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) {
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if (!is_valid_ethaddr(pdata->enetaddr)) {
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printf("\nError: %s address %pM illegal value\n",
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dev->name, pdata->enetaddr);
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return -EINVAL;
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}
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/*
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* Drivers are allowed to decide not to implement this at
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* run-time. E.g. Some devices may use it and some may not.
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*/
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ret = eth_get_ops(dev)->write_hwaddr(dev);
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if (ret == -ENOSYS)
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ret = 0;
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if (ret)
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printf("\nWarning: %s failed to set MAC address\n",
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dev->name);
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}
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return ret;
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}
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static int on_ethaddr(const char *name, const char *value, enum env_op op,
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int flags)
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{
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int index;
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int retval;
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struct udevice *dev;
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/* look for an index after "eth" */
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index = simple_strtoul(name + 3, NULL, 10);
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retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev);
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if (!retval) {
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struct eth_pdata *pdata = dev->platdata;
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switch (op) {
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case env_op_create:
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case env_op_overwrite:
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eth_parse_enetaddr(value, pdata->enetaddr);
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break;
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case env_op_delete:
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memset(pdata->enetaddr, 0, 6);
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}
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}
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return 0;
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}
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U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
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int eth_init(void)
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{
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struct udevice *current;
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struct udevice *old_current;
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int ret = -ENODEV;
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current = eth_get_dev();
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if (!current) {
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printf("No ethernet found.\n");
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return -ENODEV;
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}
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old_current = current;
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do {
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if (current) {
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debug("Trying %s\n", current->name);
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if (device_active(current)) {
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ret = eth_get_ops(current)->start(current);
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if (ret >= 0) {
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struct eth_device_priv *priv =
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current->uclass_priv;
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priv->state = ETH_STATE_ACTIVE;
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return 0;
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}
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} else {
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ret = eth_errno;
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}
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debug("FAIL\n");
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} else {
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debug("PROBE FAIL\n");
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}
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/*
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* If ethrotate is enabled, this will change "current",
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* otherwise we will drop out of this while loop immediately
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*/
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eth_try_another(0);
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/* This will ensure the new "current" attempted to probe */
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current = eth_get_dev();
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} while (old_current != current);
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return ret;
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}
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void eth_halt(void)
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{
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struct udevice *current;
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struct eth_device_priv *priv;
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current = eth_get_dev();
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if (!current || !device_active(current))
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return;
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eth_get_ops(current)->stop(current);
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priv = current->uclass_priv;
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priv->state = ETH_STATE_PASSIVE;
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}
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int eth_is_active(struct udevice *dev)
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{
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struct eth_device_priv *priv;
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if (!dev || !device_active(dev))
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return 0;
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priv = dev_get_uclass_priv(dev);
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return priv->state == ETH_STATE_ACTIVE;
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}
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int eth_send(void *packet, int length)
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{
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struct udevice *current;
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int ret;
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current = eth_get_dev();
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if (!current)
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return -ENODEV;
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if (!device_active(current))
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return -EINVAL;
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ret = eth_get_ops(current)->send(current, packet, length);
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if (ret < 0) {
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/* We cannot completely return the error at present */
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debug("%s: send() returned error %d\n", __func__, ret);
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}
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return ret;
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}
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int eth_rx(void)
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{
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struct udevice *current;
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uchar *packet;
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int flags;
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int ret;
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int i;
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current = eth_get_dev();
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if (!current)
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return -ENODEV;
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if (!device_active(current))
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return -EINVAL;
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/* Process up to 32 packets at one time */
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flags = ETH_RECV_CHECK_DEVICE;
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for (i = 0; i < 32; i++) {
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ret = eth_get_ops(current)->recv(current, flags, &packet);
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flags = 0;
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if (ret > 0)
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net_process_received_packet(packet, ret);
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if (ret >= 0 && eth_get_ops(current)->free_pkt)
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eth_get_ops(current)->free_pkt(current, packet, ret);
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if (ret <= 0)
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break;
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}
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if (ret == -EAGAIN)
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ret = 0;
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if (ret < 0) {
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/* We cannot completely return the error at present */
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debug("%s: recv() returned error %d\n", __func__, ret);
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}
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return ret;
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}
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int eth_initialize(void)
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{
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int num_devices = 0;
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struct udevice *dev;
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eth_common_init();
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/*
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* Devices need to write the hwaddr even if not started so that Linux
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* will have access to the hwaddr that u-boot stored for the device.
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* This is accomplished by attempting to probe each device and calling
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* their write_hwaddr() operation.
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*/
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uclass_first_device(UCLASS_ETH, &dev);
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if (!dev) {
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printf("No ethernet found.\n");
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bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
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} else {
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char *ethprime = getenv("ethprime");
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struct udevice *prime_dev = NULL;
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if (ethprime)
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prime_dev = eth_get_dev_by_name(ethprime);
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if (prime_dev) {
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eth_set_dev(prime_dev);
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eth_current_changed();
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} else {
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eth_set_dev(NULL);
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}
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bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
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do {
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if (num_devices)
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printf(", ");
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printf("eth%d: %s", dev->seq, dev->name);
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if (ethprime && dev == prime_dev)
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printf(" [PRIME]");
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eth_write_hwaddr(dev);
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uclass_next_device(&dev);
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num_devices++;
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} while (dev);
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putc('\n');
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}
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return num_devices;
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}
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static int eth_post_bind(struct udevice *dev)
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{
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if (strchr(dev->name, ' ')) {
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printf("\nError: eth device name \"%s\" has a space!\n",
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dev->name);
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return -EINVAL;
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}
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return 0;
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}
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static int eth_pre_unbind(struct udevice *dev)
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{
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/* Don't hang onto a pointer that is going away */
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if (dev == eth_get_uclass_priv()->current)
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eth_set_dev(NULL);
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return 0;
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}
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static int eth_post_probe(struct udevice *dev)
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{
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struct eth_device_priv *priv = dev->uclass_priv;
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struct eth_pdata *pdata = dev->platdata;
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unsigned char env_enetaddr[6];
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priv->state = ETH_STATE_INIT;
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/* Check if the device has a MAC address in ROM */
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if (eth_get_ops(dev)->read_rom_hwaddr)
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eth_get_ops(dev)->read_rom_hwaddr(dev);
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eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr);
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if (!is_zero_ethaddr(env_enetaddr)) {
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if (!is_zero_ethaddr(pdata->enetaddr) &&
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memcmp(pdata->enetaddr, env_enetaddr, 6)) {
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printf("\nWarning: %s MAC addresses don't match:\n",
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|
dev->name);
|
|
printf("Address in SROM is %pM\n",
|
|
pdata->enetaddr);
|
|
printf("Address in environment is %pM\n",
|
|
env_enetaddr);
|
|
}
|
|
|
|
/* Override the ROM MAC address */
|
|
memcpy(pdata->enetaddr, env_enetaddr, 6);
|
|
} 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_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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
UCLASS_DRIVER(eth) = {
|
|
.name = "eth",
|
|
.id = UCLASS_ETH,
|
|
.post_bind = eth_post_bind,
|
|
.pre_unbind = eth_pre_unbind,
|
|
.post_probe = eth_post_probe,
|
|
.pre_remove = eth_pre_remove,
|
|
.priv_auto_alloc_size = sizeof(struct eth_uclass_priv),
|
|
.per_device_auto_alloc_size = sizeof(struct eth_device_priv),
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
|
};
|
|
#endif /* #ifdef CONFIG_DM_ETH */
|
|
|
|
#ifndef CONFIG_DM_ETH
|
|
|
|
#ifdef CONFIG_API
|
|
static struct {
|
|
uchar data[PKTSIZE];
|
|
int length;
|
|
} eth_rcv_bufs[PKTBUFSRX];
|
|
|
|
static unsigned int eth_rcv_current, eth_rcv_last;
|
|
#endif
|
|
|
|
static struct eth_device *eth_devices;
|
|
struct eth_device *eth_current;
|
|
|
|
static void eth_set_current_to_next(void)
|
|
{
|
|
eth_current = eth_current->next;
|
|
}
|
|
|
|
static void eth_set_dev(struct eth_device *dev)
|
|
{
|
|
eth_current = dev;
|
|
}
|
|
|
|
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;
|
|
|
|
dev = eth_devices;
|
|
target_dev = NULL;
|
|
do {
|
|
if (strcmp(devname, dev->name) == 0) {
|
|
target_dev = dev;
|
|
break;
|
|
}
|
|
dev = dev->next;
|
|
} while (dev != eth_devices);
|
|
|
|
return target_dev;
|
|
}
|
|
|
|
struct eth_device *eth_get_dev_by_index(int index)
|
|
{
|
|
struct eth_device *dev, *target_dev;
|
|
|
|
if (!eth_devices)
|
|
return NULL;
|
|
|
|
dev = eth_devices;
|
|
target_dev = NULL;
|
|
do {
|
|
if (dev->index == index) {
|
|
target_dev = dev;
|
|
break;
|
|
}
|
|
dev = dev->next;
|
|
} while (dev != eth_devices);
|
|
|
|
return target_dev;
|
|
}
|
|
|
|
int eth_get_dev_index(void)
|
|
{
|
|
if (!eth_current)
|
|
return -1;
|
|
|
|
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)
|
|
{
|
|
unsigned char env_enetaddr[6];
|
|
int ret = 0;
|
|
|
|
eth_getenv_enetaddr_by_index(base_name, eth_number, env_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);
|
|
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_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_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)) {
|
|
if (!is_valid_ethaddr(dev->enetaddr)) {
|
|
printf("\nError: %s address %pM illegal value\n",
|
|
dev->name, dev->enetaddr);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = dev->write_hwaddr(dev);
|
|
if (ret)
|
|
printf("\nWarning: %s failed to set MAC address\n",
|
|
dev->name);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
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_devices = dev;
|
|
eth_current = dev;
|
|
eth_current_changed();
|
|
} else {
|
|
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_unregister(struct eth_device *dev)
|
|
{
|
|
struct eth_device *cur;
|
|
|
|
/* No device */
|
|
if (!eth_devices)
|
|
return -ENODEV;
|
|
|
|
for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
|
|
cur = cur->next)
|
|
;
|
|
|
|
/* Device not found */
|
|
if (cur->next != dev)
|
|
return -ENODEV;
|
|
|
|
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;
|
|
}
|
|
|
|
int eth_initialize(void)
|
|
{
|
|
int num_devices = 0;
|
|
|
|
eth_devices = NULL;
|
|
eth_current = NULL;
|
|
eth_common_init();
|
|
|
|
if (!eth_devices) {
|
|
puts("No ethernet found.\n");
|
|
bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
|
|
} else {
|
|
struct eth_device *dev = eth_devices;
|
|
char *ethprime = getenv("ethprime");
|
|
|
|
bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
|
|
do {
|
|
if (dev->index)
|
|
puts(", ");
|
|
|
|
printf("%s", dev->name);
|
|
|
|
if (ethprime && strcmp(dev->name, ethprime) == 0) {
|
|
eth_current = dev;
|
|
puts(" [PRIME]");
|
|
}
|
|
|
|
if (strchr(dev->name, ' '))
|
|
puts("\nWarning: eth device name has a space!"
|
|
"\n");
|
|
|
|
eth_write_hwaddr(dev, "eth", dev->index);
|
|
|
|
dev = dev->next;
|
|
num_devices++;
|
|
} while (dev != eth_devices);
|
|
|
|
eth_current_changed();
|
|
putc('\n');
|
|
}
|
|
|
|
return num_devices;
|
|
}
|
|
|
|
#ifdef CONFIG_MCAST_TFTP
|
|
/* Multicast.
|
|
* mcast_addr: multicast ipaddr from which multicast Mac is made
|
|
* join: 1=join, 0=leave.
|
|
*/
|
|
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.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;
|
|
return eth_current->mcast(eth_current, mcast_mac, join);
|
|
}
|
|
|
|
/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
|
|
* and this is the ethernet-crc method needed for TSEC -- and perhaps
|
|
* some other adapter -- hash tables
|
|
*/
|
|
#define CRCPOLY_LE 0xedb88320
|
|
u32 ether_crc(size_t len, unsigned char const *p)
|
|
{
|
|
int i;
|
|
u32 crc;
|
|
crc = ~0;
|
|
while (len--) {
|
|
crc ^= *p++;
|
|
for (i = 0; i < 8; i++)
|
|
crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
|
|
}
|
|
/* an reverse the bits, cuz of way they arrive -- last-first */
|
|
crc = (crc >> 16) | (crc << 16);
|
|
crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
|
|
crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
|
|
crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
|
|
crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
|
|
return crc;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
int eth_init(void)
|
|
{
|
|
struct eth_device *old_current;
|
|
|
|
if (!eth_current) {
|
|
puts("No ethernet found.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
old_current = eth_current;
|
|
do {
|
|
debug("Trying %s\n", eth_current->name);
|
|
|
|
if (eth_current->init(eth_current, gd->bd) >= 0) {
|
|
eth_current->state = ETH_STATE_ACTIVE;
|
|
|
|
return 0;
|
|
}
|
|
debug("FAIL\n");
|
|
|
|
eth_try_another(0);
|
|
} while (old_current != eth_current);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
void eth_halt(void)
|
|
{
|
|
if (!eth_current)
|
|
return;
|
|
|
|
eth_current->halt(eth_current);
|
|
|
|
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)
|
|
return -ENODEV;
|
|
|
|
return eth_current->send(eth_current, packet, length);
|
|
}
|
|
|
|
int eth_rx(void)
|
|
{
|
|
if (!eth_current)
|
|
return -ENODEV;
|
|
|
|
return eth_current->recv(eth_current);
|
|
}
|
|
#endif /* ifndef CONFIG_DM_ETH */
|
|
|
|
#ifdef CONFIG_API
|
|
static void eth_save_packet(void *packet, int length)
|
|
{
|
|
char *p = packet;
|
|
int i;
|
|
|
|
if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
|
|
return;
|
|
|
|
if (PKTSIZE < length)
|
|
return;
|
|
|
|
for (i = 0; i < length; i++)
|
|
eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
|
|
|
|
eth_rcv_bufs[eth_rcv_last].length = length;
|
|
eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
|
|
}
|
|
|
|
int eth_receive(void *packet, int length)
|
|
{
|
|
char *p = packet;
|
|
void *pp = push_packet;
|
|
int i;
|
|
|
|
if (eth_rcv_current == eth_rcv_last) {
|
|
push_packet = eth_save_packet;
|
|
eth_rx();
|
|
push_packet = pp;
|
|
|
|
if (eth_rcv_current == eth_rcv_last)
|
|
return -1;
|
|
}
|
|
|
|
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];
|
|
|
|
eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
|
|
return length;
|
|
}
|
|
#endif /* CONFIG_API */
|
|
|
|
static void eth_current_changed(void)
|
|
{
|
|
char *act = getenv("ethact");
|
|
/* update current ethernet name */
|
|
if (eth_get_dev()) {
|
|
if (act == NULL || strcmp(act, eth_get_name()) != 0)
|
|
setenv("ethact", eth_get_name());
|
|
}
|
|
/*
|
|
* remove the variable completely if there is no active
|
|
* interface
|
|
*/
|
|
else if (act != NULL)
|
|
setenv("ethact", NULL);
|
|
}
|
|
|
|
void eth_try_another(int first_restart)
|
|
{
|
|
static void *first_failed;
|
|
char *ethrotate;
|
|
|
|
/*
|
|
* Do not rotate between network interfaces when
|
|
* 'ethrotate' variable is set to 'no'.
|
|
*/
|
|
ethrotate = getenv("ethrotate");
|
|
if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
|
|
return;
|
|
|
|
if (!eth_get_dev())
|
|
return;
|
|
|
|
if (first_restart)
|
|
first_failed = eth_get_dev();
|
|
|
|
eth_set_current_to_next();
|
|
|
|
eth_current_changed();
|
|
|
|
if (first_failed == eth_get_dev())
|
|
net_restart_wrap = 1;
|
|
}
|
|
|
|
void eth_set_current(void)
|
|
{
|
|
static char *act;
|
|
static int env_changed_id;
|
|
int env_id;
|
|
|
|
env_id = get_env_id();
|
|
if ((act == NULL) || (env_changed_id != env_id)) {
|
|
act = getenv("ethact");
|
|
env_changed_id = env_id;
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
const char *eth_get_name(void)
|
|
{
|
|
return eth_get_dev() ? eth_get_dev()->name : "unknown";
|
|
}
|