drivers/net : move net drivers to drivers/net

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 0 insertions, 587 deletions

diff --git a/drivers/macb.c b/drivers/macb.c
deleted file mode 100644
index 95cdc49..0000000
--- a/drivers/macb.c
+++ /dev/null
@@ -1,587 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-#include <common.h>
-
-#if defined(CONFIG_MACB) \
-	&& (defined(CONFIG_CMD_NET) || defined(CONFIG_CMD_MII))
-
-/*
- * The u-boot networking stack is a little weird.  It seems like the
- * networking core allocates receive buffers up front without any
- * regard to the hardware that's supposed to actually receive those
- * packets.
- *
- * The MACB receives packets into 128-byte receive buffers, so the
- * buffers allocated by the core isn't very practical to use.  We'll
- * allocate our own, but we need one such buffer in case a packet
- * wraps around the DMA ring so that we have to copy it.
- *
- * Therefore, define CFG_RX_ETH_BUFFER to 1 in the board-specific
- * configuration header.  This way, the core allocates one RX buffer
- * and one TX buffer, each of which can hold a ethernet packet of
- * maximum size.
- *
- * For some reason, the networking core unconditionally specifies a
- * 32-byte packet "alignment" (which really should be called
- * "padding").  MACB shouldn't need that, but we'll refrain from any
- * core modifications here...
- */
-
-#include <net.h>
-#include <malloc.h>
-
-#include <linux/mii.h>
-#include <asm/io.h>
-#include <asm/dma-mapping.h>
-#include <asm/arch/clk.h>
-
-#include "macb.h"
-
-#define barrier() asm volatile("" ::: "memory")
-
-#define CFG_MACB_RX_BUFFER_SIZE		4096
-#define CFG_MACB_RX_RING_SIZE		(CFG_MACB_RX_BUFFER_SIZE / 128)
-#define CFG_MACB_TX_RING_SIZE		16
-#define CFG_MACB_TX_TIMEOUT		1000
-#define CFG_MACB_AUTONEG_TIMEOUT	5000000
-
-struct macb_dma_desc {
-	u32	addr;
-	u32	ctrl;
-};
-
-#define RXADDR_USED		0x00000001
-#define RXADDR_WRAP		0x00000002
-
-#define RXBUF_FRMLEN_MASK	0x00000fff
-#define RXBUF_FRAME_START	0x00004000
-#define RXBUF_FRAME_END		0x00008000
-#define RXBUF_TYPEID_MATCH	0x00400000
-#define RXBUF_ADDR4_MATCH	0x00800000
-#define RXBUF_ADDR3_MATCH	0x01000000
-#define RXBUF_ADDR2_MATCH	0x02000000
-#define RXBUF_ADDR1_MATCH	0x04000000
-#define RXBUF_BROADCAST		0x80000000
-
-#define TXBUF_FRMLEN_MASK	0x000007ff
-#define TXBUF_FRAME_END		0x00008000
-#define TXBUF_NOCRC		0x00010000
-#define TXBUF_EXHAUSTED		0x08000000
-#define TXBUF_UNDERRUN		0x10000000
-#define TXBUF_MAXRETRY		0x20000000
-#define TXBUF_WRAP		0x40000000
-#define TXBUF_USED		0x80000000
-
-struct macb_device {
-	void			*regs;
-
-	unsigned int		rx_tail;
-	unsigned int		tx_head;
-	unsigned int		tx_tail;
-
-	void			*rx_buffer;
-	void			*tx_buffer;
-	struct macb_dma_desc	*rx_ring;
-	struct macb_dma_desc	*tx_ring;
-
-	unsigned long		rx_buffer_dma;
-	unsigned long		rx_ring_dma;
-	unsigned long		tx_ring_dma;
-
-	const struct device	*dev;
-	struct eth_device	netdev;
-	unsigned short		phy_addr;
-};
-#define to_macb(_nd) container_of(_nd, struct macb_device, netdev)
-
-static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value)
-{
-	unsigned long netctl;
-	unsigned long netstat;
-	unsigned long frame;
-
-	netctl = macb_readl(macb, NCR);
-	netctl |= MACB_BIT(MPE);
-	macb_writel(macb, NCR, netctl);
-
-	frame = (MACB_BF(SOF, 1)
-		 | MACB_BF(RW, 1)
-		 | MACB_BF(PHYA, macb->phy_addr)
-		 | MACB_BF(REGA, reg)
-		 | MACB_BF(CODE, 2)
-		 | MACB_BF(DATA, value));
-	macb_writel(macb, MAN, frame);
-
-	do {
-		netstat = macb_readl(macb, NSR);
-	} while (!(netstat & MACB_BIT(IDLE)));
-
-	netctl = macb_readl(macb, NCR);
-	netctl &= ~MACB_BIT(MPE);
-	macb_writel(macb, NCR, netctl);
-}
-
-static u16 macb_mdio_read(struct macb_device *macb, u8 reg)
-{
-	unsigned long netctl;
-	unsigned long netstat;
-	unsigned long frame;
-
-	netctl = macb_readl(macb, NCR);
-	netctl |= MACB_BIT(MPE);
-	macb_writel(macb, NCR, netctl);
-
-	frame = (MACB_BF(SOF, 1)
-		 | MACB_BF(RW, 2)
-		 | MACB_BF(PHYA, macb->phy_addr)
-		 | MACB_BF(REGA, reg)
-		 | MACB_BF(CODE, 2));
-	macb_writel(macb, MAN, frame);
-
-	do {
-		netstat = macb_readl(macb, NSR);
-	} while (!(netstat & MACB_BIT(IDLE)));
-
-	frame = macb_readl(macb, MAN);
-
-	netctl = macb_readl(macb, NCR);
-	netctl &= ~MACB_BIT(MPE);
-	macb_writel(macb, NCR, netctl);
-
-	return MACB_BFEXT(DATA, frame);
-}
-
-#if defined(CONFIG_CMD_NET)
-
-static int macb_send(struct eth_device *netdev, volatile void *packet,
-		     int length)
-{
-	struct macb_device *macb = to_macb(netdev);
-	unsigned long paddr, ctrl;
-	unsigned int tx_head = macb->tx_head;
-	int i;
-
-	paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
-
-	ctrl = length & TXBUF_FRMLEN_MASK;
-	ctrl |= TXBUF_FRAME_END;
-	if (tx_head == (CFG_MACB_TX_RING_SIZE - 1)) {
-		ctrl |= TXBUF_WRAP;
-		macb->tx_head = 0;
-	} else
-		macb->tx_head++;
-
-	macb->tx_ring[tx_head].ctrl = ctrl;
-	macb->tx_ring[tx_head].addr = paddr;
-	barrier();
-	macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));
-
-	/*
-	 * I guess this is necessary because the networking core may
-	 * re-use the transmit buffer as soon as we return...
-	 */
-	for (i = 0; i <= CFG_MACB_TX_TIMEOUT; i++) {
-		barrier();
-		ctrl = macb->tx_ring[tx_head].ctrl;
-		if (ctrl & TXBUF_USED)
-			break;
-		udelay(1);
-	}
-
-	dma_unmap_single(packet, length, paddr);
-
-	if (i <= CFG_MACB_TX_TIMEOUT) {
-		if (ctrl & TXBUF_UNDERRUN)
-			printf("%s: TX underrun\n", netdev->name);
-		if (ctrl & TXBUF_EXHAUSTED)
-			printf("%s: TX buffers exhausted in mid frame\n",
-			       netdev->name);
-	} else {
-		printf("%s: TX timeout\n", netdev->name);
-	}
-
-	/* No one cares anyway */
-	return 0;
-}
-
-static void reclaim_rx_buffers(struct macb_device *macb,
-			       unsigned int new_tail)
-{
-	unsigned int i;
-
-	i = macb->rx_tail;
-	while (i > new_tail) {
-		macb->rx_ring[i].addr &= ~RXADDR_USED;
-		i++;
-		if (i > CFG_MACB_RX_RING_SIZE)
-			i = 0;
-	}
-
-	while (i < new_tail) {
-		macb->rx_ring[i].addr &= ~RXADDR_USED;
-		i++;
-	}
-
-	barrier();
-	macb->rx_tail = new_tail;
-}
-
-static int macb_recv(struct eth_device *netdev)
-{
-	struct macb_device *macb = to_macb(netdev);
-	unsigned int rx_tail = macb->rx_tail;
-	void *buffer;
-	int length;
-	int wrapped = 0;
-	u32 status;
-
-	for (;;) {
-		if (!(macb->rx_ring[rx_tail].addr & RXADDR_USED))
-			return -1;
-
-		status = macb->rx_ring[rx_tail].ctrl;
-		if (status & RXBUF_FRAME_START) {
-			if (rx_tail != macb->rx_tail)
-				reclaim_rx_buffers(macb, rx_tail);
-			wrapped = 0;
-		}
-
-		if (status & RXBUF_FRAME_END) {
-			buffer = macb->rx_buffer + 128 * macb->rx_tail;
-			length = status & RXBUF_FRMLEN_MASK;
-			if (wrapped) {
-				unsigned int headlen, taillen;
-
-				headlen = 128 * (CFG_MACB_RX_RING_SIZE
-						 - macb->rx_tail);
-				taillen = length - headlen;
-				memcpy((void *)NetRxPackets[0],
-				       buffer, headlen);
-				memcpy((void *)NetRxPackets[0] + headlen,
-				       macb->rx_buffer, taillen);
-				buffer = (void *)NetRxPackets[0];
-			}
-
-			NetReceive(buffer, length);
-			if (++rx_tail >= CFG_MACB_RX_RING_SIZE)
-				rx_tail = 0;
-			reclaim_rx_buffers(macb, rx_tail);
-		} else {
-			if (++rx_tail >= CFG_MACB_RX_RING_SIZE) {
-				wrapped = 1;
-				rx_tail = 0;
-			}
-		}
-		barrier();
-	}
-
-	return 0;
-}
-
-static void macb_phy_reset(struct macb_device *macb)
-{
-	struct eth_device *netdev = &macb->netdev;
-	int i;
-	u16 status, adv;
-
-	adv = ADVERTISE_CSMA | ADVERTISE_ALL;
-	macb_mdio_write(macb, MII_ADVERTISE, adv);
-	printf("%s: Starting autonegotiation...\n", netdev->name);
-	macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE
-					 | BMCR_ANRESTART));
-
-	for (i = 0; i < CFG_MACB_AUTONEG_TIMEOUT / 100; i++) {
-		status = macb_mdio_read(macb, MII_BMSR);
-		if (status & BMSR_ANEGCOMPLETE)
-			break;
-		udelay(100);
-	}
-
-	if (status & BMSR_ANEGCOMPLETE)
-		printf("%s: Autonegotiation complete\n", netdev->name);
-	else
-		printf("%s: Autonegotiation timed out (status=0x%04x)\n",
-		       netdev->name, status);
-}
-
-static int macb_phy_init(struct macb_device *macb)
-{
-	struct eth_device *netdev = &macb->netdev;
-	u32 ncfgr;
-	u16 phy_id, status, adv, lpa;
-	int media, speed, duplex;
-	int i;
-
-	/* Check if the PHY is up to snuff... */
-	phy_id = macb_mdio_read(macb, MII_PHYSID1);
-	if (phy_id == 0xffff) {
-		printf("%s: No PHY present\n", netdev->name);
-		return 0;
-	}
-
-	status = macb_mdio_read(macb, MII_BMSR);
-	if (!(status & BMSR_LSTATUS)) {
-		/* Try to re-negotiate if we don't have link already. */
-		macb_phy_reset(macb);
-
-		for (i = 0; i < CFG_MACB_AUTONEG_TIMEOUT / 100; i++) {
-			status = macb_mdio_read(macb, MII_BMSR);
-			if (status & BMSR_LSTATUS)
-				break;
-			udelay(100);
-		}
-	}
-
-	if (!(status & BMSR_LSTATUS)) {
-		printf("%s: link down (status: 0x%04x)\n",
-		       netdev->name, status);
-		return 0;
-	} else {
-		adv = macb_mdio_read(macb, MII_ADVERTISE);
-		lpa = macb_mdio_read(macb, MII_LPA);
-		media = mii_nway_result(lpa & adv);
-		speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
-			 ? 1 : 0);
-		duplex = (media & ADVERTISE_FULL) ? 1 : 0;
-		printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n",
-		       netdev->name,
-		       speed ? "100" : "10",
-		       duplex ? "full" : "half",
-		       lpa);
-
-		ncfgr = macb_readl(macb, NCFGR);
-		ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
-		if (speed)
-			ncfgr |= MACB_BIT(SPD);
-		if (duplex)
-			ncfgr |= MACB_BIT(FD);
-		macb_writel(macb, NCFGR, ncfgr);
-		return 1;
-	}
-}
-
-static int macb_init(struct eth_device *netdev, bd_t *bd)
-{
-	struct macb_device *macb = to_macb(netdev);
-	unsigned long paddr;
-	u32 hwaddr_bottom;
-	u16 hwaddr_top;
-	int i;
-
-	/*
-	 * macb_halt should have been called at some point before now,
-	 * so we'll assume the controller is idle.
-	 */
-
-	/* initialize DMA descriptors */
-	paddr = macb->rx_buffer_dma;
-	for (i = 0; i < CFG_MACB_RX_RING_SIZE; i++) {
-		if (i == (CFG_MACB_RX_RING_SIZE - 1))
-			paddr |= RXADDR_WRAP;
-		macb->rx_ring[i].addr = paddr;
-		macb->rx_ring[i].ctrl = 0;
-		paddr += 128;
-	}
-	for (i = 0; i < CFG_MACB_TX_RING_SIZE; i++) {
-		macb->tx_ring[i].addr = 0;
-		if (i == (CFG_MACB_TX_RING_SIZE - 1))
-			macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
-		else
-			macb->tx_ring[i].ctrl = TXBUF_USED;
-	}
-	macb->rx_tail = macb->tx_head = macb->tx_tail = 0;
-
-	macb_writel(macb, RBQP, macb->rx_ring_dma);
-	macb_writel(macb, TBQP, macb->tx_ring_dma);
-
-	/* set hardware address */
-	hwaddr_bottom = cpu_to_le32(*((u32 *)netdev->enetaddr));
-	macb_writel(macb, SA1B, hwaddr_bottom);
-	hwaddr_top = cpu_to_le16(*((u16 *)(netdev->enetaddr + 4)));
-	macb_writel(macb, SA1T, hwaddr_top);
-
-	/* choose RMII or MII mode. This depends on the board */
-#ifdef CONFIG_RMII
-	macb_writel(macb, USRIO, 0);
-#else
-	macb_writel(macb, USRIO, MACB_BIT(MII));
-#endif
-
-	if (!macb_phy_init(macb))
-		return 0;
-
-	/* Enable TX and RX */
-	macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
-
-	return 1;
-}
-
-static void macb_halt(struct eth_device *netdev)
-{
-	struct macb_device *macb = to_macb(netdev);
-	u32 ncr, tsr;
-
-	/* Halt the controller and wait for any ongoing transmission to end. */
-	ncr = macb_readl(macb, NCR);
-	ncr |= MACB_BIT(THALT);
-	macb_writel(macb, NCR, ncr);
-
-	do {
-		tsr = macb_readl(macb, TSR);
-	} while (tsr & MACB_BIT(TGO));
-
-	/* Disable TX and RX, and clear statistics */
-	macb_writel(macb, NCR, MACB_BIT(CLRSTAT));
-}
-
-int macb_eth_initialize(int id, void *regs, unsigned int phy_addr)
-{
-	struct macb_device *macb;
-	struct eth_device *netdev;
-	unsigned long macb_hz;
-	u32 ncfgr;
-
-	macb = malloc(sizeof(struct macb_device));
-	if (!macb) {
-		printf("Error: Failed to allocate memory for MACB%d\n", id);
-		return -1;
-	}
-	memset(macb, 0, sizeof(struct macb_device));
-
-	netdev = &macb->netdev;
-
-	macb->rx_buffer = dma_alloc_coherent(CFG_MACB_RX_BUFFER_SIZE,
-					     &macb->rx_buffer_dma);
-	macb->rx_ring = dma_alloc_coherent(CFG_MACB_RX_RING_SIZE
-					   * sizeof(struct macb_dma_desc),
-					   &macb->rx_ring_dma);
-	macb->tx_ring = dma_alloc_coherent(CFG_MACB_TX_RING_SIZE
-					   * sizeof(struct macb_dma_desc),
-					   &macb->tx_ring_dma);
-
-	macb->regs = regs;
-	macb->phy_addr = phy_addr;
-
-	sprintf(netdev->name, "macb%d", id);
-	netdev->init = macb_init;
-	netdev->halt = macb_halt;
-	netdev->send = macb_send;
-	netdev->recv = macb_recv;
-
-	/*
-	 * Do some basic initialization so that we at least can talk
-	 * to the PHY
-	 */
-	macb_hz = get_macb_pclk_rate(id);
-	if (macb_hz < 20000000)
-		ncfgr = MACB_BF(CLK, MACB_CLK_DIV8);
-	else if (macb_hz < 40000000)
-		ncfgr = MACB_BF(CLK, MACB_CLK_DIV16);
-	else if (macb_hz < 80000000)
-		ncfgr = MACB_BF(CLK, MACB_CLK_DIV32);
-	else
-		ncfgr = MACB_BF(CLK, MACB_CLK_DIV64);
-
-	macb_writel(macb, NCFGR, ncfgr);
-
-	eth_register(netdev);
-
-	return 0;
-}
-
-#endif
-
-#if defined(CONFIG_CMD_MII)
-
-int miiphy_read(unsigned char addr, unsigned char reg, unsigned short *value)
-{
-	unsigned long netctl;
-	unsigned long netstat;
-	unsigned long frame;
-	int iflag;
-
-	iflag = disable_interrupts();
-	netctl = macb_readl(&macb, EMACB_NCR);
-	netctl |= MACB_BIT(MPE);
-	macb_writel(&macb, EMACB_NCR, netctl);
-	if (iflag)
-		enable_interrupts();
-
-	frame = (MACB_BF(SOF, 1)
-		 | MACB_BF(RW, 2)
-		 | MACB_BF(PHYA, addr)
-		 | MACB_BF(REGA, reg)
-		 | MACB_BF(CODE, 2));
-	macb_writel(&macb, EMACB_MAN, frame);
-
-	do {
-		netstat = macb_readl(&macb, EMACB_NSR);
-	} while (!(netstat & MACB_BIT(IDLE)));
-
-	frame = macb_readl(&macb, EMACB_MAN);
-	*value = MACB_BFEXT(DATA, frame);
-
-	iflag = disable_interrupts();
-	netctl = macb_readl(&macb, EMACB_NCR);
-	netctl &= ~MACB_BIT(MPE);
-	macb_writel(&macb, EMACB_NCR, netctl);
-	if (iflag)
-		enable_interrupts();
-
-	return 0;
-}
-
-int miiphy_write(unsigned char addr, unsigned char reg, unsigned short value)
-{
-	unsigned long netctl;
-	unsigned long netstat;
-	unsigned long frame;
-	int iflag;
-
-	iflag = disable_interrupts();
-	netctl = macb_readl(&macb, EMACB_NCR);
-	netctl |= MACB_BIT(MPE);
-	macb_writel(&macb, EMACB_NCR, netctl);
-	if (iflag)
-		enable_interrupts();
-
-	frame = (MACB_BF(SOF, 1)
-		 | MACB_BF(RW, 1)
-		 | MACB_BF(PHYA, addr)
-		 | MACB_BF(REGA, reg)
-		 | MACB_BF(CODE, 2)
-		 | MACB_BF(DATA, value));
-	macb_writel(&macb, EMACB_MAN, frame);
-
-	do {
-		netstat = macb_readl(&macb, EMACB_NSR);
-	} while (!(netstat & MACB_BIT(IDLE)));
-
-	iflag = disable_interrupts();
-	netctl = macb_readl(&macb, EMACB_NCR);
-	netctl &= ~MACB_BIT(MPE);
-	macb_writel(&macb, EMACB_NCR, netctl);
-	if (iflag)
-		enable_interrupts();
-
-	return 0;
-}
-
-#endif
-
-#endif /* CONFIG_MACB */