Merged 405gp_enet.c and 440gx_enet.c to generic 4xx_enet.c

now handling all 4xx cpu's.
Patch by Stefan Roese, 16 Aug 2005

1 files changed, 0 insertions, 1062 deletions

diff --git a/cpu/ppc4xx/405gp_enet.c b/cpu/ppc4xx/405gp_enet.c
deleted file mode 100644
index 968f0ce..0000000
--- a/cpu/ppc4xx/405gp_enet.c
+++ /dev/null
@@ -1,1062 +0,0 @@
-/*-----------------------------------------------------------------------------+
- *
- *       This source code has been made available to you by IBM on an AS-IS
- *       basis.  Anyone receiving this source is licensed under IBM
- *       copyrights to use it in any way he or she deems fit, including
- *       copying it, modifying it, compiling it, and redistributing it either
- *       with or without modifications.  No license under IBM patents or
- *       patent applications is to be implied by the copyright license.
- *
- *       Any user of this software should understand that IBM cannot provide
- *       technical support for this software and will not be responsible for
- *       any consequences resulting from the use of this software.
- *
- *       Any person who transfers this source code or any derivative work
- *       must include the IBM copyright notice, this paragraph, and the
- *       preceding two paragraphs in the transferred software.
- *
- *       COPYRIGHT   I B M   CORPORATION 1995
- *       LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
- *-----------------------------------------------------------------------------*/
-/*-----------------------------------------------------------------------------+
- *
- *  File Name:  enetemac.c
- *
- *  Function:   Device driver for the ethernet EMAC3 macro on the 405GP.
- *
- *  Author:     Mark Wisner
- *
- *  Change Activity-
- *
- *  Date        Description of Change                                       BY
- *  ---------   ---------------------                                       ---
- *  05-May-99   Created                                                     MKW
- *  27-Jun-99   Clean up                                                    JWB
- *  16-Jul-99   Added MAL error recovery and better IP packet handling      MKW
- *  29-Jul-99   Added Full duplex support                                   MKW
- *  06-Aug-99   Changed names for Mal CR reg                                MKW
- *  23-Aug-99   Turned off SYE when running at 10Mbs                        MKW
- *  24-Aug-99   Marked descriptor empty after call_xlc                      MKW
- *  07-Sep-99   Set MAL RX buffer size reg to ENET_MAX_MTU_ALIGNED / 16     MCG
- *              to avoid chaining maximum sized packets. Push starting
- *              RX descriptor address up to the next cache line boundary.
- *  16-Jan-00   Added support for booting with IP of 0x0                    MKW
- *  15-Mar-00   Updated enetInit() to enable broadcast addresses in the
- *	        EMAC_RXM register.                                          JWB
- *  12-Mar-01   anne-sophie.harnois@nextream.fr
- *               - Variables are compatible with those already defined in
- *                include/net.h
- *              - Receive buffer descriptor ring is used to send buffers
- *                to the user
- *              - Info print about send/received/handled packet number if
- *                INFO_405_ENET is set
- *  17-Apr-01   stefan.roese@esd-electronics.com
- *              - MAL reset in "eth_halt" included
- *              - Enet speed and duplex output now in one line
- *  08-May-01   stefan.roese@esd-electronics.com
- *              - MAL error handling added (eth_init called again)
- *  13-Nov-01   stefan.roese@esd-electronics.com
- *              - Set IST bit in EMAC_M1 reg upon 100MBit or full duplex
- *  04-Jan-02   stefan.roese@esd-electronics.com
- *              - Wait for PHY auto negotiation to complete added
- *  06-Feb-02   stefan.roese@esd-electronics.com
- *              - Bug fixed in waiting for auto negotiation to complete
- *  26-Feb-02   stefan.roese@esd-electronics.com
- *              - rx and tx buffer descriptors now allocated (no fixed address
- *                used anymore)
- *  17-Jun-02   stefan.roese@esd-electronics.com
- *              - MAL error debug printf 'M' removed (rx de interrupt may
- *                occur upon many incoming packets with only 4 rx buffers).
- *  21-Nov-03   pavel.bartusek@sysgo.com
- *              - set ZMII bridge speed on 440
- *
- *-----------------------------------------------------------------------------*/
-
-#include <common.h>
-#include <asm/processor.h>
-#include <ppc4xx.h>
-#include <commproc.h>
-#include <405gp_enet.h>
-#include <405_mal.h>
-#include <miiphy.h>
-#include <net.h>
-#include <malloc.h>
-#include "vecnum.h"
-
-#if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
-  ( defined(CONFIG_440)   && !defined(CONFIG_NET_MULTI))
-
-#if !defined(CONFIG_NET_MULTI) || !defined(CONFIG_405EP)
-/* 405GP, 440 with !CONFIG_NET_MULTI. For 440 only EMAC0 is supported */
-#define EMAC_NUM_DEV        1
-#else
-/* 440EP && CONFIG_NET_MULTI */
-#define EMAC_NUM_DEV        2
-#endif
-
-#define EMAC_RESET_TIMEOUT 1000	/* 1000 ms reset timeout */
-#define PHY_AUTONEGOTIATE_TIMEOUT 4000	/* 4000 ms autonegotiate timeout */
-
-/* Ethernet Transmit and Receive Buffers */
-/* AS.HARNOIS
- * In the same way ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
- * PKTSIZE and PKTSIZE_ALIGN (include/net.h)
- */
-#define ENET_MAX_MTU           PKTSIZE
-#define ENET_MAX_MTU_ALIGNED   PKTSIZE_ALIGN
-
-/* define the number of channels implemented */
-#define EMAC_RXCHL      EMAC_NUM_DEV
-#define EMAC_TXCHL      EMAC_NUM_DEV
-
-/*-----------------------------------------------------------------------------+
- * Defines for MAL/EMAC interrupt conditions as reported in the UIC (Universal
- * Interrupt Controller).
- *-----------------------------------------------------------------------------*/
-#define MAL_UIC_ERR ( UIC_MAL_SERR | UIC_MAL_TXDE  | UIC_MAL_RXDE)
-#define MAL_UIC_DEF  (UIC_MAL_RXEOB | MAL_UIC_ERR)
-#define EMAC_UIC_DEF UIC_ENET
-#define EMAC_UIC_DEF1 UIC_ENET1
-#define SEL_UIC_DEF(p) (p ? UIC_ENET1 : UIC_ENET )
-
-
-/*-----------------------------------------------------------------------------+
- * Global variables. TX and RX descriptors and buffers.
- *-----------------------------------------------------------------------------*/
-/* IER globals */
-static uint32_t mal_ier;
-
-#if !defined(CONFIG_NET_MULTI)
-struct eth_device *emac0_dev;
-#endif
-
-/*-----------------------------------------------------------------------------+
- * Prototypes and externals.
- *-----------------------------------------------------------------------------*/
-static void enet_rcv (struct eth_device *dev, unsigned long malisr);
-
-int enetInt (struct eth_device *dev);
-static void mal_err (struct eth_device *dev, unsigned long isr,
-		     unsigned long uic, unsigned long maldef,
-		     unsigned long mal_errr);
-static void emac_err (struct eth_device *dev, unsigned long isr);
-
-/*-----------------------------------------------------------------------------+
-| ppc_405x_eth_halt
-| Disable MAL channel, and EMACn
-|
-|
-+-----------------------------------------------------------------------------*/
-static void ppc_4xx_eth_halt (struct eth_device *dev)
-{
-	EMAC_405_HW_PST hw_p = dev->priv;
-	uint32_t failsafe = 10000;
-
-	mtdcr (malier, 0x00000000); /* disable mal interrupts */
-	out32 (EMAC_IER + hw_p->hw_addr, 0x00000000);	/* disable emac interrupts */
-
-	/* 1st reset MAL channel */
-	/* Note: writing a 0 to a channel has no effect */
-	mtdcr (maltxcarr, (MAL_CR_MMSR >> (hw_p->devnum * 2)));
-	mtdcr (malrxcarr, (MAL_CR_MMSR >> hw_p->devnum));
-
-	/* wait for reset */
-	while (mfdcr (malrxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) {
-		udelay (1000);	/* Delay 1 MS so as not to hammer the register */
-		failsafe--;
-		if (failsafe == 0)
-			break;
-	}
-
-	/* EMAC RESET */
-	out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST);
-
-	hw_p->print_speed = 1;	/* print speed message again next time */
-
-	return;
-}
-
-static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
-{
-	int i;
-	unsigned long reg;
-	unsigned long msr;
-	unsigned long speed;
-	unsigned long duplex;
-	unsigned long failsafe;
-	unsigned mode_reg;
-	unsigned short devnum;
-	unsigned short reg_short;
-
-	EMAC_405_HW_PST hw_p = dev->priv;
-	/* before doing anything, figure out if we have a MAC address */
-	/* if not, bail */
-	if (memcmp (dev->enetaddr, "\0\0\0\0\0\0", 6) == 0)
-		return -1;
-
-	msr = mfmsr ();
-	mtmsr (msr & ~(MSR_EE));	/* disable interrupts */
-
-	devnum = hw_p->devnum;
-
-#ifdef INFO_405_ENET
-	/* AS.HARNOIS
-	 * We should have :
-	 * hw_p->stats.pkts_handled <=  hw_p->stats.pkts_rx <= hw_p->stats.pkts_handled+PKTBUFSRX
-	 * In the most cases hw_p->stats.pkts_handled = hw_p->stats.pkts_rx, but it
-	 * is possible that new packets (without relationship with
-	 * current transfer) have got the time to arrived before
-	 * netloop calls eth_halt
-	 */
-	printf ("About preceeding transfer (eth%d):\n"
-		"- Sent packet number %d\n"
-		"- Received packet number %d\n"
-		"- Handled packet number %d\n",
-		hw_p->devnum,
-		hw_p->stats.pkts_tx,
-		hw_p->stats.pkts_rx, hw_p->stats.pkts_handled);
-
-	hw_p->stats.pkts_tx = 0;
-	hw_p->stats.pkts_rx = 0;
-	hw_p->stats.pkts_handled = 0;
-#endif
-
-	/* MAL RESET */
-	mtdcr (malmcr, MAL_CR_MMSR);
-	/* wait for reset */
-	while (mfdcr (malmcr) & MAL_CR_MMSR) {
-	};
-
-#if defined(CONFIG_440EP) || defined(CONFIG_440GR)
-	out32 (ZMII_FER, 0);
-	udelay(100);
-	/* set RII mode */
-	out32 (ZMII_FER, ZMII_RMII | ZMII_MDI0);
-#elif defined(CONFIG_440)
-	/* set RMII mode */
-	out32 (ZMII_FER, ZMII_RMII | ZMII_MDI0);
-#endif /* CONFIG_440 */
-
-	/* MAL Channel RESET */
-	/* 1st reset MAL channel */
-	/* Note: writing a 0 to a channel has no effect */
-	mtdcr (maltxcarr, (MAL_TXRX_CASR >> (hw_p->devnum * 2)));
-	mtdcr (malrxcarr, (MAL_TXRX_CASR >> hw_p->devnum));
-
-	/* wait for reset */
-	/* TBS:  should have udelay and failsafe here */
-	failsafe = 10000;
-	/* wait for reset */
-	while (mfdcr (malrxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) {
-		udelay (1000);	/* Delay 1 MS so as not to hammer the register */
-		failsafe--;
-		if (failsafe == 0)
-			break;
-
-	}
-
-	hw_p->tx_err_index = 0;	/* Transmit Error Index for tx_err_log */
-	hw_p->rx_err_index = 0;	/* Receive Error Index for rx_err_log */
-
-	hw_p->rx_slot = 0;	/* MAL Receive Slot */
-	hw_p->rx_i_index = 0;	/* Receive Interrupt Queue Index */
-	hw_p->rx_u_index = 0;	/* Receive User Queue Index */
-
-	hw_p->tx_slot = 0;	/* MAL Transmit Slot */
-	hw_p->tx_i_index = 0;	/* Transmit Interrupt Queue Index */
-	hw_p->tx_u_index = 0;	/* Transmit User Queue Index */
-
-	__asm__ volatile ("eieio");
-
-	/* reset emac so we have access to the phy */
-
-	out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST);
-	__asm__ volatile ("eieio");
-
-	failsafe = 1000;
-	while ((in32 (EMAC_M0 + hw_p->hw_addr) & (EMAC_M0_SRST)) && failsafe) {
-		udelay (1000);
-		failsafe--;
-	}
-
-#if defined(CONFIG_NET_MULTI)
-	reg = hw_p->devnum ? CONFIG_PHY1_ADDR : CONFIG_PHY_ADDR;
-#else
-	reg = CONFIG_PHY_ADDR;
-#endif
-	/* wait for PHY to complete auto negotiation */
-	reg_short = 0;
-#ifndef CONFIG_CS8952_PHY
-	miiphy_read (reg, PHY_BMSR, &reg_short);
-
-	/*
-	 * Wait if PHY is capable of autonegotiation and autonegotiation is not complete
-	 */
-	if ((reg_short & PHY_BMSR_AUTN_ABLE)
-	    && !(reg_short & PHY_BMSR_AUTN_COMP)) {
-		puts ("Waiting for PHY auto negotiation to complete");
-		i = 0;
-		while (!(reg_short & PHY_BMSR_AUTN_COMP)) {
-			/*
-			 * Timeout reached ?
-			 */
-			if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
-				puts (" TIMEOUT !\n");
-				break;
-			}
-
-			if ((i++ % 1000) == 0) {
-				putc ('.');
-			}
-			udelay (1000);	/* 1 ms */
-			miiphy_read (reg, PHY_BMSR, &reg_short);
-		}
-		puts (" done\n");
-		udelay (500000);	/* another 500 ms (results in faster booting) */
-	}
-#endif
-	speed = miiphy_speed (reg);
-	duplex = miiphy_duplex (reg);
-
-	if (hw_p->print_speed) {
-		hw_p->print_speed = 0;
-		printf ("ENET Speed is %d Mbps - %s duplex connection\n",
-			(int) speed, (duplex == HALF) ? "HALF" : "FULL");
-	}
-
-	mtdcr (malmcr, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
-	/* Errata 1.12: MAL_1 -- Disable MAL bursting */
-	if (get_pvr() == PVR_440GP_RB) {
-		mtdcr (malmcr, mfdcr(malmcr) & ~MAL_CR_PLBB);
-	}
-
-	/* Free "old" buffers */
-	if (hw_p->alloc_tx_buf)
-		free (hw_p->alloc_tx_buf);
-	if (hw_p->alloc_rx_buf)
-		free (hw_p->alloc_rx_buf);
-
-	/*
-	 * Malloc MAL buffer desciptors, make sure they are
-	 * aligned on cache line boundary size
-	 * (401/403/IOP480 = 16, 405 = 32)
-	 * and doesn't cross cache block boundaries.
-	 */
-	hw_p->alloc_tx_buf =
-		(mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_TX_BUFF) +
-				       ((2 * CFG_CACHELINE_SIZE) - 2));
-	if (((int) hw_p->alloc_tx_buf & CACHELINE_MASK) != 0) {
-		hw_p->tx =
-			(mal_desc_t *) ((int) hw_p->alloc_tx_buf +
-					CFG_CACHELINE_SIZE -
-					((int) hw_p->
-					 alloc_tx_buf & CACHELINE_MASK));
-	} else {
-		hw_p->tx = hw_p->alloc_tx_buf;
-	}
-
-	hw_p->alloc_rx_buf =
-		(mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_RX_BUFF) +
-				       ((2 * CFG_CACHELINE_SIZE) - 2));
-	if (((int) hw_p->alloc_rx_buf & CACHELINE_MASK) != 0) {
-		hw_p->rx =
-			(mal_desc_t *) ((int) hw_p->alloc_rx_buf +
-					CFG_CACHELINE_SIZE -
-					((int) hw_p->
-					 alloc_rx_buf & CACHELINE_MASK));
-	} else {
-		hw_p->rx = hw_p->alloc_rx_buf;
-	}
-
-	for (i = 0; i < NUM_TX_BUFF; i++) {
-		hw_p->tx[i].ctrl = 0;
-		hw_p->tx[i].data_len = 0;
-		if (hw_p->first_init == 0)
-			hw_p->txbuf_ptr =
-				(char *) malloc (ENET_MAX_MTU_ALIGNED);
-		hw_p->tx[i].data_ptr = hw_p->txbuf_ptr;
-		if ((NUM_TX_BUFF - 1) == i)
-			hw_p->tx[i].ctrl |= MAL_TX_CTRL_WRAP;
-		hw_p->tx_run[i] = -1;
-#if 0
-		printf ("TX_BUFF %d @ 0x%08lx\n", i,
-			(ulong) hw_p->tx[i].data_ptr);
-#endif
-	}
-
-	for (i = 0; i < NUM_RX_BUFF; i++) {
-		hw_p->rx[i].ctrl = 0;
-		hw_p->rx[i].data_len = 0;
-		/*       rx[i].data_ptr = (char *) &rx_buff[i]; */
-		hw_p->rx[i].data_ptr = (char *) NetRxPackets[i];
-		if ((NUM_RX_BUFF - 1) == i)
-			hw_p->rx[i].ctrl |= MAL_RX_CTRL_WRAP;
-		hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR;
-		hw_p->rx_ready[i] = -1;
-#if 0
-		printf ("RX_BUFF %d @ 0x%08lx\n", i, (ulong) rx[i].data_ptr);
-#endif
-	}
-
-	reg = 0x00000000;
-	reg |= dev->enetaddr[0];	/* set high address */
-	reg = reg << 8;
-	reg |= dev->enetaddr[1];
-
-	out32 (EMAC_IAH + hw_p->hw_addr, reg);
-
-	reg = 0x00000000;
-	reg |= dev->enetaddr[2];	/* set low address  */
-	reg = reg << 8;
-	reg |= dev->enetaddr[3];
-	reg = reg << 8;
-	reg |= dev->enetaddr[4];
-	reg = reg << 8;
-	reg |= dev->enetaddr[5];
-
-	out32 (EMAC_IAL + hw_p->hw_addr, reg);
-
-	switch (devnum) {
-#if defined(CONFIG_NET_MULTI)
-	case 1:
-		/* setup MAL tx & rx channel pointers */
-		/* For 405EP, the EMAC1 tx channel 0 is MAL tx channel 2 */
-		mtdcr (maltxctp2r, hw_p->tx);
-		mtdcr (malrxctp1r, hw_p->rx);
-		/* set RX buffer size */
-		mtdcr (malrcbs1, ENET_MAX_MTU_ALIGNED / 16);
-		break;
-#endif
-	case 0:
-	default:
-		/* setup MAL tx & rx channel pointers */
-		mtdcr (maltxctp0r, hw_p->tx);
-		mtdcr (malrxctp0r, hw_p->rx);
-		/* set RX buffer size */
-		mtdcr (malrcbs0, ENET_MAX_MTU_ALIGNED / 16);
-		break;
-	}
-
-	/* Enable MAL transmit and receive channels */
-	mtdcr (maltxcasr, (MAL_TXRX_CASR >> (hw_p->devnum * 2)));
-	mtdcr (malrxcasr, (MAL_TXRX_CASR >> hw_p->devnum));
-
-	/* set transmit enable & receive enable */
-	out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);
-
-	/* set receive fifo to 4k and tx fifo to 2k */
-	mode_reg = in32 (EMAC_M1 + hw_p->hw_addr);
-	mode_reg |= EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K;
-
-	/* set speed */
-	if (speed == _100BASET)
-		mode_reg = mode_reg | EMAC_M1_MF_100MBPS | EMAC_M1_IST;
-	else
-		mode_reg = mode_reg & ~0x00C00000;	/* 10 MBPS */
-	if (duplex == FULL)
-		mode_reg = mode_reg | 0x80000000 | EMAC_M1_IST;
-
-	out32 (EMAC_M1 + hw_p->hw_addr, mode_reg);
-
-#if defined(CONFIG_440)
-	/* set speed in the ZMII bridge */
-	if (speed == _100BASET)
-		out32(ZMII_SSR, in32(ZMII_SSR) | 0x10000000);
-	else
-		out32(ZMII_SSR, in32(ZMII_SSR) & ~0x10000000);
-#if defined(CONFIG_440EP) || defined(CONFIG_440GR)
-	mfsdr(sdr_mfr, reg);
-	/* set speed */
-	if (speed == _100BASET) {
-		out32(ZMII_SSR, in32(ZMII_SSR) | 0x10000000);
-		reg = (reg & ~SDR0_MFR_ZMII_MODE_MASK) | SDR0_MFR_ZMII_MODE_RMII_100M;
-	} else {
-		reg = (reg & ~SDR0_MFR_ZMII_MODE_MASK) | SDR0_MFR_ZMII_MODE_RMII_10M;
-		out32(ZMII_SSR, in32(ZMII_SSR) & ~0x10000000);
-	}
-	mtsdr(sdr_mfr, reg);
-#endif
-#endif
-
-	/* Enable broadcast and indvidual address */
-	/* TBS: enabling runts as some misbehaved nics will send runts */
-	out32 (EMAC_RXM + hw_p->hw_addr, EMAC_RMR_BAE | EMAC_RMR_IAE);
-
-	/* we probably need to set the tx mode1 reg? maybe at tx time */
-
-	/* set transmit request threshold register */
-	out32 (EMAC_TRTR + hw_p->hw_addr, 0x18000000);	/* 256 byte threshold */
-
-#if defined(CONFIG_440)
-	/* 440GP has a 64 byte burst length */
-	out32 (EMAC_RX_HI_LO_WMARK + hw_p->hw_addr, 0x0f002000);
-	out32 (EMAC_TXM1 + hw_p->hw_addr, 0xf8640000);
-#else
-	/* 405s have a 16 byte burst length */
-	out32 (EMAC_RX_HI_LO_WMARK + hw_p->hw_addr, 0x0f002000);
-#endif
-
-	/* Frame gap set */
-	out32 (EMAC_I_FRAME_GAP_REG + hw_p->hw_addr, 0x00000008);
-
-	/* Set EMAC IER */
-	hw_p->emac_ier = EMAC_ISR_PTLE | EMAC_ISR_BFCS |
-		EMAC_ISR_ORE | EMAC_ISR_IRE;
-	if (speed == _100BASET)
-		hw_p->emac_ier = hw_p->emac_ier | EMAC_ISR_SYE;
-
-	out32 (EMAC_ISR + hw_p->hw_addr, 0xffffffff);	/* clear pending interrupts */
-	out32 (EMAC_IER + hw_p->hw_addr, hw_p->emac_ier);
-
-	if (hw_p->first_init == 0) {
-		/*
-		 * Connect interrupt service routines
-		 */
-		irq_install_handler (VECNUM_ETH0 + (hw_p->devnum * 2),
-				     (interrupt_handler_t *) enetInt, dev);
-	}
-
-	mtmsr (msr);		/* enable interrupts again */
-
-	hw_p->bis = bis;
-	hw_p->first_init = 1;
-
-	return (1);
-}
-
-
-static int ppc_4xx_eth_send (struct eth_device *dev, volatile void *ptr, int len)
-{
-	struct enet_frame *ef_ptr;
-	ulong time_start, time_now;
-	unsigned long temp_txm0;
-	EMAC_405_HW_PST hw_p = dev->priv;
-
-	ef_ptr = (struct enet_frame *) ptr;
-
-	/*-----------------------------------------------------------------------+
-	 *  Copy in our address into the frame.
-	 *-----------------------------------------------------------------------*/
-	(void) memcpy (ef_ptr->source_addr, dev->enetaddr, ENET_ADDR_LENGTH);
-
-	/*-----------------------------------------------------------------------+
-	 * If frame is too long or too short, modify length.
-	 *-----------------------------------------------------------------------*/
-	/* TBS: where does the fragment go???? */
-	if (len > ENET_MAX_MTU)
-		len = ENET_MAX_MTU;
-
-	/*   memcpy ((void *) &tx_buff[tx_slot], (const void *) ptr, len); */
-	memcpy ((void *) hw_p->txbuf_ptr, (const void *) ptr, len);
-
-	/*-----------------------------------------------------------------------+
-	 * set TX Buffer busy, and send it
-	 *-----------------------------------------------------------------------*/
-	hw_p->tx[hw_p->tx_slot].ctrl = (MAL_TX_CTRL_LAST |
-					EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP) &
-		~(EMAC_TX_CTRL_ISA | EMAC_TX_CTRL_RSA);
-	if ((NUM_TX_BUFF - 1) == hw_p->tx_slot)
-		hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_WRAP;
-
-	hw_p->tx[hw_p->tx_slot].data_len = (short) len;
-	hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_READY;
-
-	__asm__ volatile ("eieio");
-
-	out32 (EMAC_TXM0 + hw_p->hw_addr,
-	       in32 (EMAC_TXM0 + hw_p->hw_addr) | EMAC_TXM0_GNP0);
-#ifdef INFO_405_ENET
-	hw_p->stats.pkts_tx++;
-#endif
-
-	/*-----------------------------------------------------------------------+
-	 * poll unitl the packet is sent and then make sure it is OK
-	 *-----------------------------------------------------------------------*/
-	time_start = get_timer (0);
-	while (1) {
-		temp_txm0 = in32 (EMAC_TXM0 + hw_p->hw_addr);
-		/* loop until either TINT turns on or 3 seconds elapse */
-		if ((temp_txm0 & EMAC_TXM0_GNP0) != 0) {
-			/* transmit is done, so now check for errors
-			 * If there is an error, an interrupt should
-			 * happen when we return
-			 */
-			time_now = get_timer (0);
-			if ((time_now - time_start) > 3000) {
-				return (-1);
-			}
-		} else {
-			return (len);
-		}
-	}
-}
-
-#if defined(CONFIG_440)
-int enetInt (struct eth_device *dev)
-{
-	int serviced;
-	int rc = -1;				/* default to not us */
-	unsigned long mal_isr;
-	unsigned long emac_isr = 0;
-	unsigned long mal_rx_eob;
-	unsigned long my_uic0msr, my_uic1msr;
-	EMAC_405_HW_PST hw_p;
-
-	/*
-	 * Because the mal is generic, we need to get the current
-	 * eth device
-	 */
-#if defined(CONFIG_NET_MULTI)
-	dev = eth_get_dev();
-#else
-	dev = emac0_dev;
-#endif
-	hw_p = dev->priv;
-
-	/* enter loop that stays in interrupt code until nothing to service */
-	do {
-		serviced = 0;
-
-		my_uic0msr = mfdcr (uic0msr);
-		my_uic1msr = mfdcr (uic1msr);
-
-		if (!(my_uic0msr & UIC_MRE)
-		    && !(my_uic1msr & (UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE))) {
-			/* not for us */
-			return (rc);
-		}
-
-		/* get and clear controller status interrupts */
-		/* look at Mal and EMAC interrupts */
-		if ((my_uic0msr & UIC_MRE)
-		    || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
-			/* we have a MAL interrupt */
-			mal_isr = mfdcr (malesr);
-			/* look for mal error */
-			if (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE)) {
-				mal_err (dev, mal_isr, my_uic0msr, MAL_UIC_DEF, MAL_UIC_ERR);
-				serviced = 1;
-				rc = 0;
-			}
-		}
-		if (UIC_ETH0 & my_uic1msr) {	/* look for EMAC errors */
-			emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
-			if ((hw_p->emac_ier & emac_isr) != 0) {
-				emac_err (dev, emac_isr);
-				serviced = 1;
-				rc = 0;
-			}
-		}
-		if ((hw_p->emac_ier & emac_isr)
-		    || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
-			mtdcr (uic0sr, UIC_MRE); /* Clear */
-			mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
-			return (rc);		/* we had errors so get out */
-		}
-
-		/* handle MAL RX EOB  interupt from a receive */
-		/* check for EOB on valid channels            */
-		if (my_uic0msr & UIC_MRE) {
-			mal_rx_eob = mfdcr (malrxeobisr);
-			if ((mal_rx_eob & (0x80000000 >> hw_p->devnum)) != 0) {	/* call emac routine for channel 0 */
-				/* clear EOB
-				   mtdcr(malrxeobisr, mal_rx_eob); */
-				enet_rcv (dev, emac_isr);
-				/* indicate that we serviced an interrupt */
-				serviced = 1;
-				rc = 0;
-			}
-		}
-		mtdcr (uic0sr, UIC_MRE); /* Clear */
-		mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
-	} while (serviced);
-
-	return (rc);
-}
-
-#else /* CONFIG_440 */
-
-int enetInt (struct eth_device *dev)
-{
-	int serviced;
-	int rc = -1;		/* default to not us */
-	unsigned long mal_isr;
-	unsigned long emac_isr = 0;
-	unsigned long mal_rx_eob;
-	unsigned long my_uicmsr;
-
-	EMAC_405_HW_PST hw_p;
-
-	/*
-	 * Because the mal is generic, we need to get the current
-	 * eth device
-	 */
-#if defined(CONFIG_NET_MULTI)
-	dev = eth_get_dev();
-#else
-	dev = emac0_dev;
-#endif
-
-	hw_p = dev->priv;
-
-	/* enter loop that stays in interrupt code until nothing to service */
-	do {
-		serviced = 0;
-
-		my_uicmsr = mfdcr (uicmsr);
-
-		if ((my_uicmsr & (MAL_UIC_DEF | EMAC_UIC_DEF)) == 0) {	/* not for us */
-			return (rc);
-		}
-		/* get and clear controller status interrupts */
-		/* look at Mal and EMAC interrupts */
-		if ((MAL_UIC_DEF & my_uicmsr) != 0) {	/* we have a MAL interrupt */
-			mal_isr = mfdcr (malesr);
-			/* look for mal error */
-			if ((my_uicmsr & MAL_UIC_ERR) != 0) {
-				mal_err (dev, mal_isr, my_uicmsr, MAL_UIC_DEF, MAL_UIC_ERR);
-				serviced = 1;
-				rc = 0;
-			}
-		}
-
-		/* port by port dispatch of emac interrupts */
-
-		if ((SEL_UIC_DEF(hw_p->devnum) & my_uicmsr) != 0) {	/* look for EMAC errors */
-			emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
-			if ((hw_p->emac_ier & emac_isr) != 0) {
-				emac_err (dev, emac_isr);
-				serviced = 1;
-				rc = 0;
-			}
-		}
-		if (((hw_p->emac_ier & emac_isr) != 0) || ((MAL_UIC_ERR & my_uicmsr) != 0)) {
-			mtdcr (uicsr, MAL_UIC_DEF | SEL_UIC_DEF(hw_p->devnum)); /* Clear */
-			return (rc);		/* we had errors so get out */
-		}
-
-		/* handle MAX TX EOB interrupt from a tx */
-		if (my_uicmsr & UIC_MAL_TXEOB) {
-			mal_rx_eob = mfdcr (maltxeobisr);
-			mtdcr (maltxeobisr, mal_rx_eob);
-			mtdcr (uicsr, UIC_MAL_TXEOB);
-		}
-		/* handle MAL RX EOB  interupt from a receive */
-		/* check for EOB on valid channels	      */
-		if (my_uicmsr & UIC_MAL_RXEOB)
-		{
-			mal_rx_eob = mfdcr (malrxeobisr);
-			if ((mal_rx_eob & (0x80000000 >> hw_p->devnum)) != 0) {	/* call emac routine for channel x */
-				/* clear EOB
-				 mtdcr(malrxeobisr, mal_rx_eob); */
-				enet_rcv (dev, emac_isr);
-				/* indicate that we serviced an interrupt */
-				serviced = 1;
-				rc = 0;
-			}
-		}
-		mtdcr (uicsr, MAL_UIC_DEF|EMAC_UIC_DEF|EMAC_UIC_DEF1);	/* Clear */
-	}
-	while (serviced);
-
-	return (rc);
-}
-#endif
-/*-----------------------------------------------------------------------------+
- *  MAL Error Routine
- *-----------------------------------------------------------------------------*/
-static void mal_err (struct eth_device *dev, unsigned long isr,
-		     unsigned long uic, unsigned long maldef,
-		     unsigned long mal_errr)
-{
-	EMAC_405_HW_PST hw_p = dev->priv;
-
-	mtdcr (malesr, isr);	/* clear interrupt */
-
-	/* clear DE interrupt */
-	mtdcr (maltxdeir, 0xC0000000);
-	mtdcr (malrxdeir, 0x80000000);
-
-#ifdef INFO_405_ENET
-	printf ("\nMAL error occured.... ISR = %lx UIC = = %lx  MAL_DEF = %lx  MAL_ERR= %lx \n", isr, uic, maldef, mal_errr);
-#endif
-
-	eth_init (hw_p->bis);	/* start again... */
-}
-
-/*-----------------------------------------------------------------------------+
- *  EMAC Error Routine
- *-----------------------------------------------------------------------------*/
-static void emac_err (struct eth_device *dev, unsigned long isr)
-{
-	EMAC_405_HW_PST hw_p = dev->priv;
-
-	printf ("EMAC%d error occured.... ISR = %lx\n", hw_p->devnum, isr);
-	out32 (EMAC_ISR + hw_p->hw_addr, isr);
-}
-
-/*-----------------------------------------------------------------------------+
- *  enet_rcv() handles the ethernet receive data
- *-----------------------------------------------------------------------------*/
-static void enet_rcv (struct eth_device *dev, unsigned long malisr)
-{
-	struct enet_frame *ef_ptr;
-	unsigned long data_len;
-	unsigned long rx_eob_isr;
-	EMAC_405_HW_PST hw_p = dev->priv;
-
-	int handled = 0;
-	int i;
-	int loop_count = 0;
-
-	rx_eob_isr = mfdcr (malrxeobisr);
-	if ((0x80000000 >> hw_p->devnum) & rx_eob_isr) {
-		/* clear EOB */
-		mtdcr (malrxeobisr, rx_eob_isr);
-
-		/* EMAC RX done */
-		while (1) {	/* do all */
-			i = hw_p->rx_slot;
-
-			if ((MAL_RX_CTRL_EMPTY & hw_p->rx[i].ctrl)
-			    || (loop_count >= NUM_RX_BUFF))
-				break;
-			loop_count++;
-			hw_p->rx_slot++;
-			if (NUM_RX_BUFF == hw_p->rx_slot)
-				hw_p->rx_slot = 0;
-			handled++;
-			data_len = (unsigned long) hw_p->rx[i].data_len;	/* Get len */
-			if (data_len) {
-				if (data_len > ENET_MAX_MTU)	/* Check len */
-					data_len = 0;
-				else {
-					if (EMAC_RX_ERRORS & hw_p->rx[i].ctrl) {	/* Check Errors */
-						data_len = 0;
-						hw_p->stats.rx_err_log[hw_p->
-								       rx_err_index]
-							= hw_p->rx[i].ctrl;
-						hw_p->rx_err_index++;
-						if (hw_p->rx_err_index ==
-						    MAX_ERR_LOG)
-							hw_p->rx_err_index =
-								0;
-					}	/* emac_erros */
-				}	/* data_len < max mtu */
-			}	/* if data_len */
-			if (!data_len) {	/* no data */
-				hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY;	/* Free Recv Buffer */
-
-				hw_p->stats.data_len_err++;	/* Error at Rx */
-			}
-
-			/* !data_len */
-			/* AS.HARNOIS */
-			/* Check if user has already eaten buffer */
-			/* if not => ERROR */
-			else if (hw_p->rx_ready[hw_p->rx_i_index] != -1) {
-				if (hw_p->is_receiving)
-					printf ("ERROR : Receive buffers are full!\n");
-				break;
-			} else {
-				hw_p->stats.rx_frames++;
-				hw_p->stats.rx += data_len;
-				ef_ptr = (struct enet_frame *) hw_p->rx[i].
-					data_ptr;
-#ifdef INFO_405_ENET
-				hw_p->stats.pkts_rx++;
-#endif
-				/* AS.HARNOIS
-				 * use ring buffer
-				 */
-				hw_p->rx_ready[hw_p->rx_i_index] = i;
-				hw_p->rx_i_index++;
-				if (NUM_RX_BUFF == hw_p->rx_i_index)
-					hw_p->rx_i_index = 0;
-
-				/* printf("X");  /|* test-only *|/ */
-
-				/*  AS.HARNOIS
-				 * free receive buffer only when
-				 * buffer has been handled (eth_rx)
-				 rx[i].ctrl |= MAL_RX_CTRL_EMPTY;
-				 */
-			}	/* if data_len */
-		}		/* while */
-	}			/* if EMACK_RXCHL */
-}
-
-
-static int ppc_4xx_eth_rx (struct eth_device *dev)
-{
-	int length;
-	int user_index;
-	unsigned long msr;
-	EMAC_405_HW_PST hw_p = dev->priv;
-
-	hw_p->is_receiving = 1;	/* tell driver */
-
-	for (;;) {
-		/* AS.HARNOIS
-		 * use ring buffer and
-		 * get index from rx buffer desciptor queue
-		 */
-		user_index = hw_p->rx_ready[hw_p->rx_u_index];
-		if (user_index == -1) {
-			length = -1;
-			break;	/* nothing received - leave for() loop */
-		}
-
-		msr = mfmsr ();
-		mtmsr (msr & ~(MSR_EE));
-
-		length = hw_p->rx[user_index].data_len;
-
-		/* Pass the packet up to the protocol layers. */
-		/*       NetReceive(NetRxPackets[rxIdx], length - 4); */
-		/*       NetReceive(NetRxPackets[i], length); */
-		NetReceive (NetRxPackets[user_index], length - 4);
-		/* Free Recv Buffer */
-		hw_p->rx[user_index].ctrl |= MAL_RX_CTRL_EMPTY;
-		/* Free rx buffer descriptor queue */
-		hw_p->rx_ready[hw_p->rx_u_index] = -1;
-		hw_p->rx_u_index++;
-		if (NUM_RX_BUFF == hw_p->rx_u_index)
-			hw_p->rx_u_index = 0;
-
-#ifdef INFO_405_ENET
-		hw_p->stats.pkts_handled++;
-#endif
-
-		mtmsr (msr);	/* Enable IRQ's */
-	}
-
-	hw_p->is_receiving = 0;	/* tell driver */
-
-	return length;
-}
-
-static int virgin = 0;
-int ppc_4xx_eth_initialize (bd_t * bis)
-{
-	struct eth_device *dev;
-	int eth_num = 0;
-
-	EMAC_405_HW_PST hw = NULL;
-
-	for (eth_num = 0; eth_num < EMAC_NUM_DEV; eth_num++) {
-
-		/* Allocate device structure */
-		dev = (struct eth_device *) malloc (sizeof (*dev));
-		if (dev == NULL) {
-			printf ("ppc_405x_eth_initialize: "
-				"Cannot allocate eth_device %d\n", eth_num);
-			return (-1);
-		}
-		memset(dev, 0, sizeof(*dev));
-		/* Allocate our private use data */
-		hw = (EMAC_405_HW_PST) malloc (sizeof (*hw));
-		if (hw == NULL) {
-			printf ("ppc_405x_eth_initialize: "
-				"Cannot allocate private hw data for eth_device %d",
-				eth_num);
-			free (dev);
-			return (-1);
-		}
-		memset(hw, 0, sizeof(*hw));
-
-		switch (eth_num) {
-		case 0:
-			hw->hw_addr = 0;
-			memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
-			break;
-#if defined(CONFIG_NET_MULTI)
-		case 1:
-			hw->hw_addr = 0x100;
-			memcpy (dev->enetaddr, bis->bi_enet1addr, 6);
-			break;
-#endif
-		default:
-			hw->hw_addr = 0;
-			memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
-			break;
-		}
-
-		hw->devnum = eth_num;
-		hw->print_speed = 1;
-
-		sprintf (dev->name, "ppc_405x_eth%d", eth_num);
-		dev->priv = (void *) hw;
-		dev->init = ppc_4xx_eth_init;
-		dev->halt = ppc_4xx_eth_halt;
-		dev->send = ppc_4xx_eth_send;
-		dev->recv = ppc_4xx_eth_rx;
-
-		if (0 == virgin) {
-			/* set the MAL IER ??? names may change with new spec ??? */
-			mal_ier =
-				MAL_IER_DE | MAL_IER_NE | MAL_IER_TE |
-				MAL_IER_OPBE | MAL_IER_PLBE;
-			mtdcr (malesr, 0xffffffff);	/* clear pending interrupts */
-			mtdcr (maltxdeir, 0xffffffff);	/* clear pending interrupts */
-			mtdcr (malrxdeir, 0xffffffff);	/* clear pending interrupts */
-			mtdcr (malier, mal_ier);
-
-			/* install MAL interrupt handler */
-			irq_install_handler (VECNUM_MS,
-					     (interrupt_handler_t *) enetInt,
-					     dev);
-			irq_install_handler (VECNUM_MTE,
-					     (interrupt_handler_t *) enetInt,
-					     dev);
-			irq_install_handler (VECNUM_MRE,
-					     (interrupt_handler_t *) enetInt,
-					     dev);
-			irq_install_handler (VECNUM_TXDE,
-					     (interrupt_handler_t *) enetInt,
-					     dev);
-			irq_install_handler (VECNUM_RXDE,
-					     (interrupt_handler_t *) enetInt,
-					     dev);
-			virgin = 1;
-		}
-
-#if defined(CONFIG_NET_MULTI)
-		eth_register (dev);
-#else
-		emac0_dev = dev;
-#endif
-
-	}			/* end for each supported device */
-
-	return (1);
-}
-
-#if !defined(CONFIG_NET_MULTI)
-void eth_halt (void) {
-	if (emac0_dev) {
-		ppc_4xx_eth_halt(emac0_dev);
-		free(emac0_dev);
-		emac0_dev = NULL;
-	}
-}
-
-int eth_init (bd_t *bis)
-{
-	ppc_4xx_eth_initialize(bis);
-	return(ppc_4xx_eth_init(emac0_dev, bis));
-}
-
-int eth_send(volatile void *packet, int length)
-{
-
-	return (ppc_4xx_eth_send(emac0_dev, packet, length));
-}
-
-int eth_rx(void)
-{
-	return (ppc_4xx_eth_rx(emac0_dev));
-}
-#endif
-
-#endif /* CONFIG_405 */