[J-u-boot.git] / drivers / net / ftmac100.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Faraday FTMAC100 Ethernet
 *
 * (C) Copyright 2009 Faraday Technology
 * Po-Yu Chuang <[email protected]>
 */

#include <config.h>
#include <common.h>
#include <cpu_func.h>
#include <env.h>
#include <malloc.h>
#include <net.h>
#include <linux/delay.h>
#include <linux/io.h>

#include "ftmac100.h"
#ifdef CONFIG_DM_ETH
#include <dm.h>
DECLARE_GLOBAL_DATA_PTR;
#endif
#define ETH_ZLEN	60

struct ftmac100_data {
	struct ftmac100_txdes txdes[1];
	struct ftmac100_rxdes rxdes[PKTBUFSRX];
	int rx_index;
	const char *name;
	phys_addr_t iobase;
};

/*
 * Reset MAC
 */
static void ftmac100_reset(struct ftmac100_data *priv)
{
	struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;

	debug ("%s()\n", __func__);

	writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);

	while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
		mdelay(1);
	/*
	 * When soft reset complete, write mac address immediately maybe fail somehow
	 *  Wait for a while can avoid this problem
	 */
	mdelay(1);
}

/*
 * Set MAC address
 */
static void ftmac100_set_mac(struct ftmac100_data *priv ,
	const unsigned char *mac)
{
	struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
	unsigned int maddr = mac[0] << 8 | mac[1];
	unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];

	debug ("%s(%x %x)\n", __func__, maddr, laddr);

	writel (maddr, &ftmac100->mac_madr);
	writel (laddr, &ftmac100->mac_ladr);
}

/*
 * Disable MAC
 */
static void _ftmac100_halt(struct ftmac100_data *priv)
{
	struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
	debug ("%s()\n", __func__);
	writel (0, &ftmac100->maccr);
}

/*
 * Initialize MAC
 */
static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
{
	struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
	struct ftmac100_txdes *txdes = priv->txdes;
	struct ftmac100_rxdes *rxdes = priv->rxdes;
	unsigned int maccr;
	int i;
	debug ("%s()\n", __func__);

	ftmac100_reset(priv);

	/* set the ethernet address */
	ftmac100_set_mac(priv, enetaddr);


	/* disable all interrupts */

	writel (0, &ftmac100->imr);

	/* initialize descriptors */

	priv->rx_index = 0;

	txdes[0].txdes1			= FTMAC100_TXDES1_EDOTR;
	rxdes[PKTBUFSRX - 1].rxdes1	= FTMAC100_RXDES1_EDORR;

	for (i = 0; i < PKTBUFSRX; i++) {
		/* RXBUF_BADR */
		rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
		rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
		rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
	}

	/* transmit ring */

	writel ((unsigned long)txdes, &ftmac100->txr_badr);

	/* receive ring */

	writel ((unsigned long)rxdes, &ftmac100->rxr_badr);

	/* poll receive descriptor automatically */

	writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);

	/* enable transmitter, receiver */

	maccr = FTMAC100_MACCR_XMT_EN |
		FTMAC100_MACCR_RCV_EN |
		FTMAC100_MACCR_XDMA_EN |
		FTMAC100_MACCR_RDMA_EN |
		FTMAC100_MACCR_CRC_APD |
		FTMAC100_MACCR_ENRX_IN_HALFTX |
		FTMAC100_MACCR_RX_RUNT |
		FTMAC100_MACCR_RX_BROADPKT;

	writel (maccr, &ftmac100->maccr);

	return 0;
}

/*
 * Free receiving buffer
 */
static int _ftmac100_free_pkt(struct ftmac100_data *priv)
{
	struct ftmac100_rxdes *curr_des;
	curr_des = &priv->rxdes[priv->rx_index];
	/* release buffer to DMA */
	curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
	priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
	return 0;
}

/*
 * Receive a data block via Ethernet
 */
static int __ftmac100_recv(struct ftmac100_data *priv)
{
	struct ftmac100_rxdes *curr_des;
	unsigned short rxlen;

	curr_des = &priv->rxdes[priv->rx_index];
	if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
		return 0;

	if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
				FTMAC100_RXDES0_CRC_ERR |
				FTMAC100_RXDES0_FTL |
				FTMAC100_RXDES0_RUNT |
				FTMAC100_RXDES0_RX_ODD_NB)) {
		return 0;
	}

	rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
	invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
	debug ("%s(): RX buffer %d, %x received\n",
	       __func__, priv->rx_index, rxlen);

	return rxlen;
}

/*
 * Send a data block via Ethernet
 */
static int _ftmac100_send(struct ftmac100_data *priv, void *packet, int length)
{
	struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
	struct ftmac100_txdes *curr_des = priv->txdes;
	ulong start;

	if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
		debug ("%s(): no TX descriptor available\n", __func__);
		return -1;
	}

	debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);

	length = (length < ETH_ZLEN) ? ETH_ZLEN : length;

	/* initiate a transmit sequence */

	flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
	curr_des->txdes2 = (unsigned int)(unsigned long)packet;	/* TXBUF_BADR */

	curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
	curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
			    FTMAC100_TXDES1_LTS |
			    FTMAC100_TXDES1_TXBUF_SIZE (length);

	curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;

	/* start transmit */

	writel (1, &ftmac100->txpd);

	/* wait for transfer to succeed */

	start = get_timer(0);
	while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
		if (get_timer(start) >= 5) {
			debug ("%s(): timed out\n", __func__);
			return -1;
		}
	}

	debug ("%s(): packet sent\n", __func__);

	return 0;
}

#ifndef CONFIG_DM_ETH
/*
 * disable transmitter, receiver
 */
static void ftmac100_halt(struct eth_device *dev)
{
	struct ftmac100_data *priv = dev->priv;
	return _ftmac100_halt(priv);
}

static int ftmac100_init(struct eth_device *dev, struct bd_info *bd)
{
	struct ftmac100_data *priv = dev->priv;
	return _ftmac100_init(priv , dev->enetaddr);
}

static int _ftmac100_recv(struct ftmac100_data *priv)
{
	struct ftmac100_rxdes *curr_des;
	unsigned short len;
	curr_des = &priv->rxdes[priv->rx_index];
	len = __ftmac100_recv(priv);
	if (len) {
		/* pass the packet up to the protocol layers. */
		net_process_received_packet((void *)curr_des->rxdes2, len);
		_ftmac100_free_pkt(priv);
	}
	return len ? 1 : 0;
}

/*
 * Get a data block via Ethernet
 */
static int ftmac100_recv(struct eth_device *dev)
{
	struct ftmac100_data *priv = dev->priv;
	return _ftmac100_recv(priv);
}

/*
 * Send a data block via Ethernet
 */
static int ftmac100_send(struct eth_device *dev, void *packet, int length)
{
	struct ftmac100_data *priv = dev->priv;
	return _ftmac100_send(priv , packet , length);
}

int ftmac100_initialize (struct bd_info *bd)
{
	struct eth_device *dev;
	struct ftmac100_data *priv;
	dev = malloc (sizeof *dev);
	if (!dev) {
		printf ("%s(): failed to allocate dev\n", __func__);
		goto out;
	}
	/* Transmit and receive descriptors should align to 16 bytes */
	priv = memalign (16, sizeof (struct ftmac100_data));
	if (!priv) {
		printf ("%s(): failed to allocate priv\n", __func__);
		goto free_dev;
	}
	memset (dev, 0, sizeof (*dev));
	memset (priv, 0, sizeof (*priv));

	strcpy(dev->name, "FTMAC100");
	dev->iobase	= CONFIG_FTMAC100_BASE;
	dev->init	= ftmac100_init;
	dev->halt	= ftmac100_halt;
	dev->send	= ftmac100_send;
	dev->recv	= ftmac100_recv;
	dev->priv	= priv;
	priv->iobase	= dev->iobase;
	eth_register (dev);

	return 1;

free_dev:
	free (dev);
out:
	return 0;
}
#endif

#ifdef CONFIG_DM_ETH
static int ftmac100_start(struct udevice *dev)
{
	struct eth_pdata *plat = dev_get_platdata(dev);
	struct ftmac100_data *priv = dev_get_priv(dev);

	return _ftmac100_init(priv, plat->enetaddr);
}

static void ftmac100_stop(struct udevice *dev)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	_ftmac100_halt(priv);
}

static int ftmac100_send(struct udevice *dev, void *packet, int length)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	int ret;
	ret = _ftmac100_send(priv , packet , length);
	return ret ? 0 : -ETIMEDOUT;
}

static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	struct ftmac100_rxdes *curr_des;
	curr_des = &priv->rxdes[priv->rx_index];
	int len;
	len = __ftmac100_recv(priv);
	if (len)
		*packetp = (uchar *)(unsigned long)curr_des->rxdes2;

	return len ? len : -EAGAIN;
}

static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	_ftmac100_free_pkt(priv);
	return 0;
}

int ftmac100_read_rom_hwaddr(struct udevice *dev)
{
	struct eth_pdata *pdata = dev_get_platdata(dev);
	eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
	return 0;
}

static const char *dtbmacaddr(u32 ifno)
{
	int node, len;
	char enet[16];
	const char *mac;
	const char *path;
	if (gd->fdt_blob == NULL) {
		printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
		return NULL;
	}
	node = fdt_path_offset(gd->fdt_blob, "/aliases");
	if (node < 0)
		return NULL;

	sprintf(enet, "ethernet%d", ifno);
	path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
	if (!path) {
		printf("no alias for %s\n", enet);
		return NULL;
	}
	node = fdt_path_offset(gd->fdt_blob, path);
	mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
	if (mac && is_valid_ethaddr((u8 *)mac))
		return mac;

	return NULL;
}

static int ftmac100_ofdata_to_platdata(struct udevice *dev)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	struct eth_pdata *pdata = dev_get_platdata(dev);
	const char *mac;
	pdata->iobase = dev_read_addr(dev);
	priv->iobase = pdata->iobase;
	mac = dtbmacaddr(0);
	if (mac)
		memcpy(pdata->enetaddr , mac , 6);

	return 0;
}

static int ftmac100_probe(struct udevice *dev)
{
	struct ftmac100_data *priv = dev_get_priv(dev);
	priv->name = dev->name;
	return 0;
}

static int ftmac100_bind(struct udevice *dev)
{
	return device_set_name(dev, dev->name);
}

static const struct eth_ops ftmac100_ops = {
	.start	= ftmac100_start,
	.send	= ftmac100_send,
	.recv	= ftmac100_recv,
	.stop	= ftmac100_stop,
	.free_pkt = ftmac100_free_pkt,
};

static const struct udevice_id ftmac100_ids[] = {
	{ .compatible = "andestech,atmac100" },
	{ }
};

U_BOOT_DRIVER(ftmac100) = {
	.name	= "nds32_mac",
	.id	= UCLASS_ETH,
	.of_match = ftmac100_ids,
	.bind	= ftmac100_bind,
	.ofdata_to_platdata = ftmac100_ofdata_to_platdata,
	.probe	= ftmac100_probe,
	.ops	= &ftmac100_ops,
	.priv_auto	= sizeof(struct ftmac100_data),
	.platdata_auto	= sizeof(struct eth_pdata),
	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
};
#endif
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
750326e5 PYC	2	/*
	3	* Faraday FTMAC100 Ethernet
	4	*
	5	* (C) Copyright 2009 Faraday Technology
	6	* Po-Yu Chuang <[email protected]>
750326e5 PYC	7	*/
	8
	9	#include <config.h>
	10	#include <common.h>
1eb69ae4	11	#include <cpu_func.h>
7b51b576	12	#include <env.h>
750326e5 PYC	13	#include <malloc.h>
750326e5 PYC	14	#include <net.h>
c05ed00a	15	#include <linux/delay.h>
be71a179	16	#include <linux/io.h>
750326e5 PYC	17
750326e5 PYC	18	#include "ftmac100.h"
be71a179	19	#ifdef CONFIG_DM_ETH
	20	#include <dm.h>
	21	DECLARE_GLOBAL_DATA_PTR;
	22	#endif
750326e5 PYC	23	#define ETH_ZLEN 60
	24
	25	struct ftmac100_data {
6f6e6e09 PYC	26	struct ftmac100_txdes txdes[1];
6f6e6e09 PYC	27	struct ftmac100_rxdes rxdes[PKTBUFSRX];
750326e5	28	int rx_index;
be71a179	29	const char *name;
be71a179	30	phys_addr_t iobase;
750326e5 PYC	31	};
	32
	33	/*
	34	* Reset MAC
	35	*/
be71a179	36	static void ftmac100_reset(struct ftmac100_data *priv)
750326e5	37	{
be71a179	38	struct ftmac100 ftmac100 = (struct ftmac100 )priv->iobase;
750326e5 PYC	39
	40	debug ("%s()\n", __func__);
	41
	42	writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);
	43
	44	while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
1341494c	45	mdelay(1);
	46	/*
	47	* When soft reset complete, write mac address immediately maybe fail somehow
	48	* Wait for a while can avoid this problem
	49	*/
	50	mdelay(1);
750326e5 PYC	51	}
	52
	53	/*
	54	* Set MAC address
	55	*/
be71a179	56	static void ftmac100_set_mac(struct ftmac100_data *priv ,
be71a179	57	const unsigned char *mac)
750326e5	58	{
be71a179	59	struct ftmac100 ftmac100 = (struct ftmac100 )priv->iobase;
750326e5 PYC	60	unsigned int maddr = mac[0] << 8 \| mac[1];
	61	unsigned int laddr = mac[2] << 24 \| mac[3] << 16 \| mac[4] << 8 \| mac[5];
	62
	63	debug ("%s(%x %x)\n", __func__, maddr, laddr);
	64
	65	writel (maddr, &ftmac100->mac_madr);
	66	writel (laddr, &ftmac100->mac_ladr);
	67	}
	68
750326e5	69	/*
be71a179	70	* Disable MAC
750326e5	71	*/
be71a179	72	static void _ftmac100_halt(struct ftmac100_data *priv)
750326e5	73	{
be71a179	74	struct ftmac100 ftmac100 = (struct ftmac100 )priv->iobase;
750326e5	75	debug ("%s()\n", __func__);
750326e5 PYC	76	writel (0, &ftmac100->maccr);
	77	}
	78
be71a179	79	/*
	80	* Initialize MAC
	81	*/
	82	static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
750326e5	83	{
be71a179	84	struct ftmac100 ftmac100 = (struct ftmac100 )priv->iobase;
6f6e6e09 PYC	85	struct ftmac100_txdes *txdes = priv->txdes;
6f6e6e09 PYC	86	struct ftmac100_rxdes *rxdes = priv->rxdes;
750326e5 PYC	87	unsigned int maccr;
750326e5 PYC	88	int i;
750326e5 PYC	89	debug ("%s()\n", __func__);
750326e5 PYC	90
be71a179	91	ftmac100_reset(priv);
750326e5 PYC	92
750326e5 PYC	93	/* set the ethernet address */
be71a179	94	ftmac100_set_mac(priv, enetaddr);
750326e5	95
750326e5 PYC	96
	97	/* disable all interrupts */
	98
	99	writel (0, &ftmac100->imr);
	100
	101	/* initialize descriptors */
	102
	103	priv->rx_index = 0;
	104
	105	txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
	106	rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
	107
	108	for (i = 0; i < PKTBUFSRX; i++) {
	109	/* RXBUF_BADR */
28b52a6f	110	rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
750326e5 PYC	111	rxdes[i].rxdes1 \|= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
	112	rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
	113	}
	114
	115	/* transmit ring */
	116
28b52a6f	117	writel ((unsigned long)txdes, &ftmac100->txr_badr);
750326e5 PYC	118
	119	/* receive ring */
	120
28b52a6f	121	writel ((unsigned long)rxdes, &ftmac100->rxr_badr);
750326e5 PYC	122
	123	/* poll receive descriptor automatically */
	124
	125	writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
	126
	127	/* enable transmitter, receiver */
	128
	129	maccr = FTMAC100_MACCR_XMT_EN \|
	130	FTMAC100_MACCR_RCV_EN \|
	131	FTMAC100_MACCR_XDMA_EN \|
	132	FTMAC100_MACCR_RDMA_EN \|
	133	FTMAC100_MACCR_CRC_APD \|
	134	FTMAC100_MACCR_ENRX_IN_HALFTX \|
	135	FTMAC100_MACCR_RX_RUNT \|
	136	FTMAC100_MACCR_RX_BROADPKT;
	137
	138	writel (maccr, &ftmac100->maccr);
	139
	140	return 0;
	141	}
	142
	143	/*
be71a179	144	* Free receiving buffer
750326e5	145	*/
be71a179	146	static int _ftmac100_free_pkt(struct ftmac100_data *priv)
	147	{
	148	struct ftmac100_rxdes *curr_des;
	149	curr_des = &priv->rxdes[priv->rx_index];
	150	/* release buffer to DMA */
	151	curr_des->rxdes0 \|= FTMAC100_RXDES0_RXDMA_OWN;
	152	priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
	153	return 0;
	154	}
	155
	156	/*
	157	* Receive a data block via Ethernet
	158	*/
	159	static int __ftmac100_recv(struct ftmac100_data *priv)
750326e5	160	{
6f6e6e09	161	struct ftmac100_rxdes *curr_des;
750326e5 PYC	162	unsigned short rxlen;
	163
	164	curr_des = &priv->rxdes[priv->rx_index];
750326e5	165	if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
be71a179	166	return 0;
750326e5 PYC	167
	168	if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR \|
	169	FTMAC100_RXDES0_CRC_ERR \|
	170	FTMAC100_RXDES0_FTL \|
	171	FTMAC100_RXDES0_RUNT \|
	172	FTMAC100_RXDES0_RX_ODD_NB)) {
be71a179	173	return 0;
750326e5 PYC	174	}
	175
	176	rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
ce4e2370	177	invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
750326e5 PYC	178	debug ("%s(): RX buffer %d, %x received\n",
	179	__func__, priv->rx_index, rxlen);
	180
be71a179	181	return rxlen;
750326e5 PYC	182	}
	183
	184	/*
	185	* Send a data block via Ethernet
	186	*/
be71a179	187	static int _ftmac100_send(struct ftmac100_data priv, void packet, int length)
750326e5	188	{
be71a179	189	struct ftmac100 ftmac100 = (struct ftmac100 )priv->iobase;
6f6e6e09	190	struct ftmac100_txdes *curr_des = priv->txdes;
8d8fd5b6	191	ulong start;
750326e5 PYC	192
	193	if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
	194	debug ("%s(): no TX descriptor available\n", __func__);
	195	return -1;
	196	}
	197
28b52a6f	198	debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);
750326e5 PYC	199
	200	length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
	201
	202	/* initiate a transmit sequence */
	203
28b52a6f RC	204	flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
28b52a6f RC	205	curr_des->txdes2 = (unsigned int)(unsigned long)packet; /* TXBUF_BADR */
750326e5 PYC	206
	207	curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
	208	curr_des->txdes1 \|= FTMAC100_TXDES1_FTS \|
	209	FTMAC100_TXDES1_LTS \|
	210	FTMAC100_TXDES1_TXBUF_SIZE (length);
	211
	212	curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
	213
	214	/* start transmit */
	215
	216	writel (1, &ftmac100->txpd);
	217
	218	/* wait for transfer to succeed */
	219
8d8fd5b6	220	start = get_timer(0);
750326e5	221	while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
8d8fd5b6	222	if (get_timer(start) >= 5) {
750326e5 PYC	223	debug ("%s(): timed out\n", __func__);
	224	return -1;
	225	}
	226	}
	227
	228	debug ("%s(): packet sent\n", __func__);
	229
	230	return 0;
	231	}
	232
be71a179	233	#ifndef CONFIG_DM_ETH
	234	/*
	235	* disable transmitter, receiver
	236	*/
	237	static void ftmac100_halt(struct eth_device *dev)
	238	{
	239	struct ftmac100_data *priv = dev->priv;
	240	return _ftmac100_halt(priv);
	241	}
	242
b75d8dc5	243	static int ftmac100_init(struct eth_device dev, struct bd_info bd)
be71a179	244	{
	245	struct ftmac100_data *priv = dev->priv;
	246	return _ftmac100_init(priv , dev->enetaddr);
	247	}
	248
	249	static int _ftmac100_recv(struct ftmac100_data *priv)
	250	{
	251	struct ftmac100_rxdes *curr_des;
	252	unsigned short len;
	253	curr_des = &priv->rxdes[priv->rx_index];
	254	len = __ftmac100_recv(priv);
	255	if (len) {
	256	/* pass the packet up to the protocol layers. */
	257	net_process_received_packet((void *)curr_des->rxdes2, len);
	258	_ftmac100_free_pkt(priv);
	259	}
	260	return len ? 1 : 0;
	261	}
	262
	263	/*
	264	* Get a data block via Ethernet
	265	*/
	266	static int ftmac100_recv(struct eth_device *dev)
	267	{
	268	struct ftmac100_data *priv = dev->priv;
	269	return _ftmac100_recv(priv);
	270	}
	271
	272	/*
	273	* Send a data block via Ethernet
	274	*/
	275	static int ftmac100_send(struct eth_device dev, void packet, int length)
	276	{
	277	struct ftmac100_data *priv = dev->priv;
	278	return _ftmac100_send(priv , packet , length);
	279	}
	280
b75d8dc5	281	int ftmac100_initialize (struct bd_info *bd)
750326e5 PYC	282	{
	283	struct eth_device *dev;
	284	struct ftmac100_data *priv;
750326e5 PYC	285	dev = malloc (sizeof *dev);
	286	if (!dev) {
	287	printf ("%s(): failed to allocate dev\n", __func__);
	288	goto out;
	289	}
750326e5	290	/* Transmit and receive descriptors should align to 16 bytes */
750326e5 PYC	291	priv = memalign (16, sizeof (struct ftmac100_data));
	292	if (!priv) {
	293	printf ("%s(): failed to allocate priv\n", __func__);
	294	goto free_dev;
	295	}
750326e5 PYC	296	memset (dev, 0, sizeof (*dev));
	297	memset (priv, 0, sizeof (*priv));
	298
192bc694	299	strcpy(dev->name, "FTMAC100");
750326e5 PYC	300	dev->iobase = CONFIG_FTMAC100_BASE;
	301	dev->init = ftmac100_init;
	302	dev->halt = ftmac100_halt;
	303	dev->send = ftmac100_send;
	304	dev->recv = ftmac100_recv;
	305	dev->priv = priv;
be71a179	306	priv->iobase = dev->iobase;
750326e5 PYC	307	eth_register (dev);
	308
	309	return 1;
	310
	311	free_dev:
	312	free (dev);
	313	out:
	314	return 0;
	315	}
be71a179	316	#endif
	317
	318	#ifdef CONFIG_DM_ETH
	319	static int ftmac100_start(struct udevice *dev)
	320	{
	321	struct eth_pdata *plat = dev_get_platdata(dev);
	322	struct ftmac100_data *priv = dev_get_priv(dev);
	323
	324	return _ftmac100_init(priv, plat->enetaddr);
	325	}
	326
	327	static void ftmac100_stop(struct udevice *dev)
	328	{
	329	struct ftmac100_data *priv = dev_get_priv(dev);
	330	_ftmac100_halt(priv);
	331	}
	332
	333	static int ftmac100_send(struct udevice dev, void packet, int length)
	334	{
	335	struct ftmac100_data *priv = dev_get_priv(dev);
	336	int ret;
	337	ret = _ftmac100_send(priv , packet , length);
	338	return ret ? 0 : -ETIMEDOUT;
	339	}
	340
	341	static int ftmac100_recv(struct udevice dev, int flags, uchar *packetp)
	342	{
	343	struct ftmac100_data *priv = dev_get_priv(dev);
	344	struct ftmac100_rxdes *curr_des;
	345	curr_des = &priv->rxdes[priv->rx_index];
	346	int len;
	347	len = __ftmac100_recv(priv);
	348	if (len)
28b52a6f	349	packetp = (uchar )(unsigned long)curr_des->rxdes2;
be71a179	350
	351	return len ? len : -EAGAIN;
	352	}
	353
	354	static int ftmac100_free_pkt(struct udevice dev, uchar packet, int length)
	355	{
	356	struct ftmac100_data *priv = dev_get_priv(dev);
	357	_ftmac100_free_pkt(priv);
	358	return 0;
	359	}
	360
	361	int ftmac100_read_rom_hwaddr(struct udevice *dev)
	362	{
	363	struct eth_pdata *pdata = dev_get_platdata(dev);
35affd7a	364	eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
be71a179	365	return 0;
	366	}
	367
	368	static const char *dtbmacaddr(u32 ifno)
	369	{
	370	int node, len;
	371	char enet[16];
	372	const char *mac;
	373	const char *path;
	374	if (gd->fdt_blob == NULL) {
	375	printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
	376	return NULL;
	377	}
	378	node = fdt_path_offset(gd->fdt_blob, "/aliases");
	379	if (node < 0)
	380	return NULL;
	381
	382	sprintf(enet, "ethernet%d", ifno);
	383	path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
	384	if (!path) {
	385	printf("no alias for %s\n", enet);
	386	return NULL;
	387	}
	388	node = fdt_path_offset(gd->fdt_blob, path);
	389	mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
	390	if (mac && is_valid_ethaddr((u8 *)mac))
	391	return mac;
	392
	393	return NULL;
	394	}
	395
	396	static int ftmac100_ofdata_to_platdata(struct udevice *dev)
	397	{
	398	struct ftmac100_data *priv = dev_get_priv(dev);
	399	struct eth_pdata *pdata = dev_get_platdata(dev);
	400	const char *mac;
2548493a	401	pdata->iobase = dev_read_addr(dev);
be71a179	402	priv->iobase = pdata->iobase;
	403	mac = dtbmacaddr(0);
	404	if (mac)
	405	memcpy(pdata->enetaddr , mac , 6);
	406
	407	return 0;
	408	}
	409
	410	static int ftmac100_probe(struct udevice *dev)
	411	{
	412	struct ftmac100_data *priv = dev_get_priv(dev);
	413	priv->name = dev->name;
	414	return 0;
	415	}
	416
	417	static int ftmac100_bind(struct udevice *dev)
	418	{
	419	return device_set_name(dev, dev->name);
	420	}
	421
	422	static const struct eth_ops ftmac100_ops = {
	423	.start = ftmac100_start,
	424	.send = ftmac100_send,
	425	.recv = ftmac100_recv,
	426	.stop = ftmac100_stop,
	427	.free_pkt = ftmac100_free_pkt,
	428	};
	429
	430	static const struct udevice_id ftmac100_ids[] = {
	431	{ .compatible = "andestech,atmac100" },
	432	{ }
	433	};
	434
	435	U_BOOT_DRIVER(ftmac100) = {
	436	.name = "nds32_mac",
	437	.id = UCLASS_ETH,
	438	.of_match = ftmac100_ids,
	439	.bind = ftmac100_bind,
	440	.ofdata_to_platdata = ftmac100_ofdata_to_platdata,
	441	.probe = ftmac100_probe,
	442	.ops = &ftmac100_ops,
41575d8e SG	443	.priv_auto = sizeof(struct ftmac100_data),
41575d8e SG	444	.platdata_auto = sizeof(struct eth_pdata),
be71a179	445	.flags = DM_FLAG_ALLOC_PRIV_DMA,
	446	};
	447	#endif