mirror of
https://github.com/AsahiLinux/u-boot
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66fd01fe59
NXP Legal insists that the following are not fine: - Saying "NXP Semiconductors" instead of "NXP", since the company's registered name is "NXP" - Putting a "(c)" sign in the copyright string - Putting a comma in the copyright string The only accepted copyright string format is "Copyright <year-range> NXP". This patch changes the copyright headers in the networking files that were sent by me, or derived from code sent by me. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
179 lines
3.7 KiB
C
179 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019-2021 NXP
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*/
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#include <asm/eth.h>
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#include <net/dsa.h>
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#include <net.h>
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#define DSA_SANDBOX_MAGIC 0x00415344
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#define DSA_SANDBOX_TAG_LEN sizeof(struct dsa_sandbox_tag)
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struct dsa_sandbox_priv {
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struct eth_sandbox_priv *master_priv;
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int port_en_mask;
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};
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struct dsa_sandbox_tag {
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u32 magic;
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u32 port;
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};
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static bool sb_dsa_port_enabled(struct udevice *dev, int port)
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{
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struct dsa_sandbox_priv *priv = dev_get_priv(dev);
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return priv->port_en_mask & BIT(port);
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}
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static bool sb_dsa_master_enabled(struct udevice *dev)
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{
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struct dsa_sandbox_priv *priv = dev_get_priv(dev);
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return !priv->master_priv->disabled;
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}
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static int dsa_sandbox_port_enable(struct udevice *dev, int port,
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struct phy_device *phy)
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{
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struct dsa_sandbox_priv *priv = dev_get_priv(dev);
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if (!sb_dsa_master_enabled(dev))
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return -EFAULT;
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priv->port_en_mask |= BIT(port);
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return 0;
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}
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static void dsa_sandbox_port_disable(struct udevice *dev, int port,
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struct phy_device *phy)
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{
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struct dsa_sandbox_priv *priv = dev_get_priv(dev);
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priv->port_en_mask &= ~BIT(port);
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}
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static int dsa_sandbox_xmit(struct udevice *dev, int port, void *packet,
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int length)
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{
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struct dsa_sandbox_tag *tag = packet;
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if (!sb_dsa_master_enabled(dev))
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return -EFAULT;
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if (!sb_dsa_port_enabled(dev, port))
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return -EFAULT;
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tag->magic = DSA_SANDBOX_MAGIC;
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tag->port = port;
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return 0;
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}
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static int dsa_sandbox_rcv(struct udevice *dev, int *port, void *packet,
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int length)
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{
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struct dsa_sandbox_tag *tag = packet;
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if (!sb_dsa_master_enabled(dev))
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return -EFAULT;
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if (tag->magic != DSA_SANDBOX_MAGIC)
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return -EFAULT;
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*port = tag->port;
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if (!sb_dsa_port_enabled(dev, tag->port))
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return -EFAULT;
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return 0;
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}
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static const struct dsa_ops dsa_sandbox_ops = {
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.port_enable = dsa_sandbox_port_enable,
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.port_disable = dsa_sandbox_port_disable,
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.xmit = dsa_sandbox_xmit,
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.rcv = dsa_sandbox_rcv,
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};
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static int sb_dsa_handler(struct udevice *dev, void *packet,
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unsigned int len)
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{
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struct eth_sandbox_priv *master_priv;
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struct dsa_sandbox_tag *tag = packet;
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struct udevice *dsa_dev;
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u32 port_index;
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void *rx_buf;
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int i;
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/* this emulates the switch hw and the network side */
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if (tag->magic != DSA_SANDBOX_MAGIC)
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return -EFAULT;
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port_index = tag->port;
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master_priv = dev_get_priv(dev);
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dsa_dev = master_priv->priv;
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if (!sb_dsa_port_enabled(dsa_dev, port_index))
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return -EFAULT;
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packet += DSA_SANDBOX_TAG_LEN;
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len -= DSA_SANDBOX_TAG_LEN;
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if (!sandbox_eth_arp_req_to_reply(dev, packet, len))
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goto dsa_tagging;
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if (!sandbox_eth_ping_req_to_reply(dev, packet, len))
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goto dsa_tagging;
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return 0;
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dsa_tagging:
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master_priv->recv_packets--;
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i = master_priv->recv_packets;
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rx_buf = master_priv->recv_packet_buffer[i];
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len = master_priv->recv_packet_length[i];
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memmove(rx_buf + DSA_SANDBOX_TAG_LEN, rx_buf, len);
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tag = rx_buf;
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tag->magic = DSA_SANDBOX_MAGIC;
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tag->port = port_index;
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len += DSA_SANDBOX_TAG_LEN;
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master_priv->recv_packet_length[i] = len;
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master_priv->recv_packets++;
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return 0;
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}
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static int dsa_sandbox_probe(struct udevice *dev)
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{
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struct dsa_sandbox_priv *priv = dev_get_priv(dev);
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struct udevice *master = dsa_get_master(dev);
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struct eth_sandbox_priv *master_priv;
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if (!master)
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return -ENODEV;
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dsa_set_tagging(dev, DSA_SANDBOX_TAG_LEN, 0);
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master_priv = dev_get_priv(master);
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master_priv->priv = dev;
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master_priv->tx_handler = sb_dsa_handler;
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priv->master_priv = master_priv;
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return 0;
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}
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static const struct udevice_id dsa_sandbox_ids[] = {
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{ .compatible = "sandbox,dsa" },
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{ }
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};
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U_BOOT_DRIVER(dsa_sandbox) = {
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.name = "dsa_sandbox",
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.id = UCLASS_DSA,
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.of_match = dsa_sandbox_ids,
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.probe = dsa_sandbox_probe,
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.ops = &dsa_sandbox_ops,
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.priv_auto = sizeof(struct dsa_sandbox_priv),
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};
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