drivers/net/ethernet/calxeda/xgmac.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/calxeda/xgmac.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/calxeda/xgmac.c
Extension
.c
Size
56954 bytes
Lines
1928
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static const struct net_device_ops xgmac_netdev_ops = {
	.ndo_open = xgmac_open,
	.ndo_start_xmit = xgmac_xmit,
	.ndo_stop = xgmac_stop,
	.ndo_change_mtu = xgmac_change_mtu,
	.ndo_set_rx_mode = xgmac_set_rx_mode,
	.ndo_tx_timeout = xgmac_tx_timeout,
	.ndo_get_stats64 = xgmac_get_stats64,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller = xgmac_poll_controller,
#endif
	.ndo_set_mac_address = xgmac_set_mac_address,
	.ndo_set_features = xgmac_set_features,
};

static int xgmac_ethtool_get_link_ksettings(struct net_device *dev,
					    struct ethtool_link_ksettings *cmd)
{
	cmd->base.autoneg = 0;
	cmd->base.duplex = DUPLEX_FULL;
	cmd->base.speed = 10000;
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 0);
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 0);
	return 0;
}

static void xgmac_get_pauseparam(struct net_device *netdev,
				      struct ethtool_pauseparam *pause)
{
	struct xgmac_priv *priv = netdev_priv(netdev);

	pause->rx_pause = priv->rx_pause;
	pause->tx_pause = priv->tx_pause;
}

static int xgmac_set_pauseparam(struct net_device *netdev,
				     struct ethtool_pauseparam *pause)
{
	struct xgmac_priv *priv = netdev_priv(netdev);

	if (pause->autoneg)
		return -EINVAL;

	return xgmac_set_flow_ctrl(priv, pause->rx_pause, pause->tx_pause);
}

struct xgmac_stats {
	char stat_string[ETH_GSTRING_LEN];
	int stat_offset;
	bool is_reg;
};

#define XGMAC_STAT(m)	\
	{ #m, offsetof(struct xgmac_priv, xstats.m), false }
#define XGMAC_HW_STAT(m, reg_offset)	\
	{ #m, reg_offset, true }

static const struct xgmac_stats xgmac_gstrings_stats[] = {
	XGMAC_STAT(tx_frame_flushed),
	XGMAC_STAT(tx_payload_error),
	XGMAC_STAT(tx_ip_header_error),
	XGMAC_STAT(tx_local_fault),
	XGMAC_STAT(tx_remote_fault),
	XGMAC_STAT(tx_early),
	XGMAC_STAT(tx_process_stopped),
	XGMAC_STAT(tx_jabber),
	XGMAC_STAT(rx_buf_unav),
	XGMAC_STAT(rx_process_stopped),
	XGMAC_STAT(rx_payload_error),
	XGMAC_STAT(rx_ip_header_error),
	XGMAC_STAT(rx_da_filter_fail),
	XGMAC_STAT(fatal_bus_error),
	XGMAC_HW_STAT(rx_watchdog, XGMAC_MMC_RXWATCHDOG),
	XGMAC_HW_STAT(tx_vlan, XGMAC_MMC_TXVLANFRAME),
	XGMAC_HW_STAT(rx_vlan, XGMAC_MMC_RXVLANFRAME),
	XGMAC_HW_STAT(tx_pause, XGMAC_MMC_TXPAUSEFRAME),
	XGMAC_HW_STAT(rx_pause, XGMAC_MMC_RXPAUSEFRAME),
};
#define XGMAC_STATS_LEN ARRAY_SIZE(xgmac_gstrings_stats)

static void xgmac_get_ethtool_stats(struct net_device *dev,
					 struct ethtool_stats *dummy,
					 u64 *data)
{
	struct xgmac_priv *priv = netdev_priv(dev);
	void *p = priv;
	int i;

	for (i = 0; i < XGMAC_STATS_LEN; i++) {
		if (xgmac_gstrings_stats[i].is_reg)

Annotation

Implementation Notes