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![Joe Hershberger](/assets/img/avatar_default.png)
Update the naming convention used in the network stack functions and variables that Ethernet drivers use to interact with it. This cleans up the temporary hacks that were added to this interface along with the DM support. This patch has a few remaining checkpatch.pl failures that would be out of the scope of this patch to fix (drivers that are in gross violation of checkpatch.pl). Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
266 lines
5.6 KiB
C
266 lines
5.6 KiB
C
/*
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* Faraday FTMAC100 Ethernet
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*
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* (C) Copyright 2009 Faraday Technology
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* Po-Yu Chuang <ratbert@faraday-tech.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <malloc.h>
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#include <net.h>
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#include <asm/io.h>
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#include "ftmac100.h"
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#define ETH_ZLEN 60
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struct ftmac100_data {
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struct ftmac100_txdes txdes[1];
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struct ftmac100_rxdes rxdes[PKTBUFSRX];
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int rx_index;
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};
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/*
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* Reset MAC
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*/
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static void ftmac100_reset (struct eth_device *dev)
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{
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struct ftmac100 *ftmac100 = (struct ftmac100 *)dev->iobase;
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debug ("%s()\n", __func__);
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writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);
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while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
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;
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}
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/*
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* Set MAC address
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*/
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static void ftmac100_set_mac (struct eth_device *dev, const unsigned char *mac)
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{
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struct ftmac100 *ftmac100 = (struct ftmac100 *)dev->iobase;
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unsigned int maddr = mac[0] << 8 | mac[1];
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unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
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debug ("%s(%x %x)\n", __func__, maddr, laddr);
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writel (maddr, &ftmac100->mac_madr);
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writel (laddr, &ftmac100->mac_ladr);
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}
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static void ftmac100_set_mac_from_env (struct eth_device *dev)
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{
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eth_getenv_enetaddr ("ethaddr", dev->enetaddr);
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ftmac100_set_mac (dev, dev->enetaddr);
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}
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/*
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* disable transmitter, receiver
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*/
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static void ftmac100_halt (struct eth_device *dev)
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{
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struct ftmac100 *ftmac100 = (struct ftmac100 *)dev->iobase;
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debug ("%s()\n", __func__);
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writel (0, &ftmac100->maccr);
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}
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static int ftmac100_init (struct eth_device *dev, bd_t *bd)
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{
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struct ftmac100 *ftmac100 = (struct ftmac100 *)dev->iobase;
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struct ftmac100_data *priv = dev->priv;
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struct ftmac100_txdes *txdes = priv->txdes;
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struct ftmac100_rxdes *rxdes = priv->rxdes;
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unsigned int maccr;
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int i;
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debug ("%s()\n", __func__);
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ftmac100_reset (dev);
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/* set the ethernet address */
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ftmac100_set_mac_from_env (dev);
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/* disable all interrupts */
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writel (0, &ftmac100->imr);
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/* initialize descriptors */
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priv->rx_index = 0;
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txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
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rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
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for (i = 0; i < PKTBUFSRX; i++) {
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/* RXBUF_BADR */
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rxdes[i].rxdes2 = (unsigned int)net_rx_packets[i];
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rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
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rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
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}
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/* transmit ring */
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writel ((unsigned int)txdes, &ftmac100->txr_badr);
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/* receive ring */
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writel ((unsigned int)rxdes, &ftmac100->rxr_badr);
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/* poll receive descriptor automatically */
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writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
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/* enable transmitter, receiver */
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maccr = FTMAC100_MACCR_XMT_EN |
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FTMAC100_MACCR_RCV_EN |
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FTMAC100_MACCR_XDMA_EN |
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FTMAC100_MACCR_RDMA_EN |
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FTMAC100_MACCR_CRC_APD |
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FTMAC100_MACCR_ENRX_IN_HALFTX |
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FTMAC100_MACCR_RX_RUNT |
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FTMAC100_MACCR_RX_BROADPKT;
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writel (maccr, &ftmac100->maccr);
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return 0;
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}
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/*
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* Get a data block via Ethernet
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*/
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static int ftmac100_recv (struct eth_device *dev)
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{
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struct ftmac100_data *priv = dev->priv;
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struct ftmac100_rxdes *curr_des;
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unsigned short rxlen;
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curr_des = &priv->rxdes[priv->rx_index];
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if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
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return -1;
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if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
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FTMAC100_RXDES0_CRC_ERR |
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FTMAC100_RXDES0_FTL |
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FTMAC100_RXDES0_RUNT |
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FTMAC100_RXDES0_RX_ODD_NB)) {
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return -1;
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}
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rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
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debug ("%s(): RX buffer %d, %x received\n",
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__func__, priv->rx_index, rxlen);
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/* pass the packet up to the protocol layers. */
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net_process_received_packet((void *)curr_des->rxdes2, rxlen);
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/* release buffer to DMA */
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curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
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priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
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return 0;
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}
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/*
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* Send a data block via Ethernet
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*/
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static int ftmac100_send(struct eth_device *dev, void *packet, int length)
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{
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struct ftmac100 *ftmac100 = (struct ftmac100 *)dev->iobase;
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struct ftmac100_data *priv = dev->priv;
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struct ftmac100_txdes *curr_des = priv->txdes;
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ulong start;
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if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
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debug ("%s(): no TX descriptor available\n", __func__);
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return -1;
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}
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debug ("%s(%x, %x)\n", __func__, (int)packet, length);
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length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
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/* initiate a transmit sequence */
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curr_des->txdes2 = (unsigned int)packet; /* TXBUF_BADR */
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curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
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curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
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FTMAC100_TXDES1_LTS |
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FTMAC100_TXDES1_TXBUF_SIZE (length);
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curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
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/* start transmit */
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writel (1, &ftmac100->txpd);
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/* wait for transfer to succeed */
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start = get_timer(0);
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while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
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if (get_timer(start) >= 5) {
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debug ("%s(): timed out\n", __func__);
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return -1;
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}
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}
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debug ("%s(): packet sent\n", __func__);
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return 0;
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}
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int ftmac100_initialize (bd_t *bd)
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{
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struct eth_device *dev;
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struct ftmac100_data *priv;
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dev = malloc (sizeof *dev);
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if (!dev) {
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printf ("%s(): failed to allocate dev\n", __func__);
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goto out;
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}
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/* Transmit and receive descriptors should align to 16 bytes */
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priv = memalign (16, sizeof (struct ftmac100_data));
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if (!priv) {
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printf ("%s(): failed to allocate priv\n", __func__);
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goto free_dev;
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}
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memset (dev, 0, sizeof (*dev));
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memset (priv, 0, sizeof (*priv));
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sprintf (dev->name, "FTMAC100");
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dev->iobase = CONFIG_FTMAC100_BASE;
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dev->init = ftmac100_init;
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dev->halt = ftmac100_halt;
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dev->send = ftmac100_send;
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dev->recv = ftmac100_recv;
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dev->priv = priv;
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eth_register (dev);
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return 1;
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free_dev:
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free (dev);
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out:
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return 0;
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}
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