net: Remove old Xilinx Emac driver

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 0 insertions, 464 deletions

diff --git a/drivers/net/xilinx_emac.c b/drivers/net/xilinx_emac.c
deleted file mode 100644
index a489aa9..0000000
--- a/drivers/net/xilinx_emac.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/******************************************************************************
- *
- * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
- * AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
- * SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE,
- * OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
- * APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
- * THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
- * AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
- * FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY
- * WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
- * IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
- * REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
- * INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE.
- *
- * (C) Copyright 2007-2008 Michal Simek
- * Michal SIMEK <monstr@monstr.eu>
- *
- * (c) Copyright 2003 Xilinx Inc.
- * All rights reserved.
- *
- ******************************************************************************/
-
-#include <config.h>
-#include <common.h>
-#include <net.h>
-#include <asm/io.h>
-
-#include <asm/asm.h>
-
-#undef DEBUG
-
-typedef struct {
-	u32 regbaseaddress;	/* Base address of registers */
-	u32 databaseaddress;	/* Base address of data for FIFOs */
-} xpacketfifov100b;
-
-typedef struct {
-	u32 baseaddress;	/* Base address (of IPIF) */
-	u32 isstarted;		/* Device is currently started 0-no, 1-yes */
-	xpacketfifov100b recvfifo;	/* FIFO used to receive frames */
-	xpacketfifov100b sendfifo;	/* FIFO used to send frames */
-} xemac;
-
-#define XIIF_V123B_IISR_OFFSET	32UL /* IP interrupt status register */
-#define XIIF_V123B_RESET_MASK		0xAUL
-#define XIIF_V123B_RESETR_OFFSET	64UL /* reset register */
-
-/* This constant is used with the Reset Register */
-#define XPF_RESET_FIFO_MASK		0x0000000A
-#define XPF_COUNT_STATUS_REG_OFFSET	4UL
-
-/* These constants are used with the Occupancy/Vacancy Count Register. This
- * register also contains FIFO status */
-#define XPF_COUNT_MASK			0x0000FFFF
-#define XPF_DEADLOCK_MASK		0x20000000
-
-/* Offset of the MAC registers from the IPIF base address */
-#define XEM_REG_OFFSET		0x1100UL
-
-/*
- * Register offsets for the Ethernet MAC. Each register is 32 bits.
- */
-#define XEM_ECR_OFFSET	(XEM_REG_OFFSET + 0x4)	/* MAC Control */
-#define XEM_SAH_OFFSET	(XEM_REG_OFFSET + 0xC)	/* Station addr, high */
-#define XEM_SAL_OFFSET	(XEM_REG_OFFSET + 0x10)	/* Station addr, low */
-#define XEM_RPLR_OFFSET	(XEM_REG_OFFSET + 0x1C)	/* Rx packet length */
-#define XEM_TPLR_OFFSET	(XEM_REG_OFFSET + 0x20)	/* Tx packet length */
-#define XEM_TSR_OFFSET	(XEM_REG_OFFSET + 0x24)	/* Tx status */
-
-#define XEM_PFIFO_OFFSET	0x2000UL
-/* Tx registers */
-#define XEM_PFIFO_TXREG_OFFSET	(XEM_PFIFO_OFFSET + 0x0)
-/* Rx registers */
-#define XEM_PFIFO_RXREG_OFFSET	(XEM_PFIFO_OFFSET + 0x10)
-/* Tx keyhole */
-#define XEM_PFIFO_TXDATA_OFFSET	(XEM_PFIFO_OFFSET + 0x100)
-/* Rx keyhole */
-#define XEM_PFIFO_RXDATA_OFFSET	(XEM_PFIFO_OFFSET + 0x200)
-
-/*
- * EMAC Interrupt Registers (Status and Enable) masks. These registers are
- * part of the IPIF IP Interrupt registers
- */
-/* A mask for all transmit interrupts, used in polled mode */
-#define XEM_EIR_XMIT_ALL_MASK	(XEM_EIR_XMIT_DONE_MASK |\
-				XEM_EIR_XMIT_ERROR_MASK | \
-				XEM_EIR_XMIT_SFIFO_EMPTY_MASK |\
-				XEM_EIR_XMIT_LFIFO_FULL_MASK)
-
-/* Xmit complete */
-#define XEM_EIR_XMIT_DONE_MASK		0x00000001UL
-/* Recv complete */
-#define XEM_EIR_RECV_DONE_MASK		0x00000002UL
-/* Xmit error */
-#define XEM_EIR_XMIT_ERROR_MASK		0x00000004UL
-/* Recv error */
-#define XEM_EIR_RECV_ERROR_MASK		0x00000008UL
-/* Xmit status fifo empty */
-#define XEM_EIR_XMIT_SFIFO_EMPTY_MASK	0x00000010UL
-/* Recv length fifo empty */
-#define XEM_EIR_RECV_LFIFO_EMPTY_MASK	0x00000020UL
-/* Xmit length fifo full */
-#define XEM_EIR_XMIT_LFIFO_FULL_MASK	0x00000040UL
-/* Recv length fifo overrun */
-#define XEM_EIR_RECV_LFIFO_OVER_MASK	0x00000080UL
-/* Recv length fifo underrun */
-#define XEM_EIR_RECV_LFIFO_UNDER_MASK	0x00000100UL
-/* Xmit status fifo overrun */
-#define XEM_EIR_XMIT_SFIFO_OVER_MASK	0x00000200UL
-/* Transmit status fifo underrun */
-#define XEM_EIR_XMIT_SFIFO_UNDER_MASK	0x00000400UL
-/* Transmit length fifo overrun */
-#define XEM_EIR_XMIT_LFIFO_OVER_MASK	0x00000800UL
-/* Transmit length fifo underrun */
-#define XEM_EIR_XMIT_LFIFO_UNDER_MASK	0x00001000UL
-/* Transmit pause pkt received */
-#define XEM_EIR_XMIT_PAUSE_MASK		0x00002000UL
-
-/*
- * EMAC Control Register (ECR)
- */
-/* Full duplex mode */
-#define XEM_ECR_FULL_DUPLEX_MASK	0x80000000UL
-/* Reset transmitter */
-#define XEM_ECR_XMIT_RESET_MASK		0x40000000UL
-/* Enable transmitter */
-#define XEM_ECR_XMIT_ENABLE_MASK	0x20000000UL
-/* Reset receiver */
-#define XEM_ECR_RECV_RESET_MASK		0x10000000UL
-/* Enable receiver */
-#define XEM_ECR_RECV_ENABLE_MASK	0x08000000UL
-/* Enable PHY */
-#define XEM_ECR_PHY_ENABLE_MASK		0x04000000UL
-/* Enable xmit pad insert */
-#define XEM_ECR_XMIT_PAD_ENABLE_MASK	0x02000000UL
-/* Enable xmit FCS insert */
-#define XEM_ECR_XMIT_FCS_ENABLE_MASK	0x01000000UL
-/* Enable unicast addr */
-#define XEM_ECR_UNICAST_ENABLE_MASK	0x00020000UL
-/* Enable broadcast addr */
-#define XEM_ECR_BROAD_ENABLE_MASK	0x00008000UL
-
-/*
- * Transmit Status Register (TSR)
- */
-/* Transmit excess deferral */
-#define XEM_TSR_EXCESS_DEFERRAL_MASK	0x80000000UL
-/* Transmit late collision */
-#define XEM_TSR_LATE_COLLISION_MASK	0x01000000UL
-
-#define ENET_MAX_MTU		PKTSIZE
-#define ENET_ADDR_LENGTH	6
-
-static unsigned int etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
-
-static u8 emacaddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
-
-static xemac emac;
-
-void eth_halt(void)
-{
-	debug ("eth_halt\n");
-}
-
-int eth_init(bd_t * bis)
-{
-	uchar enetaddr[6];
-	u32 helpreg;
-	debug ("EMAC Initialization Started\n\r");
-
-	if (emac.isstarted) {
-		puts("Emac is started\n");
-		return 0;
-	}
-
-	memset (&emac, 0, sizeof (xemac));
-
-	emac.baseaddress = XILINX_EMAC_BASEADDR;
-
-	/* Setting up FIFOs */
-	emac.recvfifo.regbaseaddress = emac.baseaddress +
-					XEM_PFIFO_RXREG_OFFSET;
-	emac.recvfifo.databaseaddress = emac.baseaddress +
-					XEM_PFIFO_RXDATA_OFFSET;
-	out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
-
-	emac.sendfifo.regbaseaddress = emac.baseaddress +
-					XEM_PFIFO_TXREG_OFFSET;
-	emac.sendfifo.databaseaddress = emac.baseaddress +
-					XEM_PFIFO_TXDATA_OFFSET;
-	out_be32 (emac.sendfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
-
-	/* Reset the entire IPIF */
-	out_be32 (emac.baseaddress + XIIF_V123B_RESETR_OFFSET,
-					XIIF_V123B_RESET_MASK);
-
-	/* Stopping EMAC for setting up MAC */
-	helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
-	helpreg &= ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
-	out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
-
-	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
-		memcpy(enetaddr, emacaddr, ENET_ADDR_LENGTH);
-		eth_setenv_enetaddr("ethaddr", enetaddr);
-	}
-
-	/* Set the device station address high and low registers */
-	helpreg = (enetaddr[0] << 8) | enetaddr[1];
-	out_be32 (emac.baseaddress + XEM_SAH_OFFSET, helpreg);
-	helpreg = (enetaddr[2] << 24) | (enetaddr[3] << 16) |
-			(enetaddr[4] << 8) | enetaddr[5];
-	out_be32 (emac.baseaddress + XEM_SAL_OFFSET, helpreg);
-
-	helpreg = XEM_ECR_UNICAST_ENABLE_MASK | XEM_ECR_BROAD_ENABLE_MASK |
-		XEM_ECR_FULL_DUPLEX_MASK | XEM_ECR_XMIT_FCS_ENABLE_MASK |
-		XEM_ECR_XMIT_PAD_ENABLE_MASK | XEM_ECR_PHY_ENABLE_MASK;
-	out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
-
-	emac.isstarted = 1;
-
-	/* Enable the transmitter, and receiver */
-	helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
-	helpreg &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK);
-	helpreg |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
-	out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
-
-	printf("EMAC Initialization complete\n\r");
-	return 0;
-}
-
-int eth_send(volatile void *ptr, int len)
-{
-	u32 intrstatus;
-	u32 xmitstatus;
-	u32 fifocount;
-	u32 wordcount;
-	u32 extrabytecount;
-	u32 *wordbuffer = (u32 *) ptr;
-
-	if (len > ENET_MAX_MTU)
-		len = ENET_MAX_MTU;
-
-	/*
-	 * Check for overruns and underruns for the transmit status and length
-	 * FIFOs and make sure the send packet FIFO is not deadlocked.
-	 * Any of these conditions is bad enough that we do not want to
-	 * continue. The upper layer software should reset the device to resolve
-	 * the error.
-	 */
-	intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
-	if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
-			XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
-		debug ("Transmitting overrun error\n");
-		return 0;
-	} else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
-			XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
-		debug ("Transmitting underrun error\n");
-		return 0;
-	} else if (in_be32 (emac.sendfifo.regbaseaddress +
-			XPF_COUNT_STATUS_REG_OFFSET) & XPF_DEADLOCK_MASK) {
-		debug ("Transmitting fifo error\n");
-		return 0;
-	}
-
-	/*
-	 * Before writing to the data FIFO, make sure the length FIFO is not
-	 * full. The data FIFO might not be full yet even though the length FIFO
-	 * is. This avoids an overrun condition on the length FIFO and keeps the
-	 * FIFOs in sync.
-	 *
-	 * Clear the latched LFIFO_FULL bit so next time around the most
-	 * current status is represented
-	 */
-	if (intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK) {
-		out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
-			intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK);
-		debug ("Fifo is full\n");
-		return 0;
-	}
-
-	/* get the count of how many words may be inserted into the FIFO */
-	fifocount = in_be32 (emac.sendfifo.regbaseaddress +
-				XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
-	wordcount = len >> 2;
-	extrabytecount = len & 0x3;
-
-	if (fifocount < wordcount) {
-		debug ("Sending packet is larger then size of FIFO\n");
-		return 0;
-	}
-
-	for (fifocount = 0; fifocount < wordcount; fifocount++) {
-		out_be32 (emac.sendfifo.databaseaddress, wordbuffer[fifocount]);
-	}
-	if (extrabytecount > 0) {
-		u32 lastword = 0;
-		u8 *extrabytesbuffer = (u8 *) (wordbuffer + wordcount);
-
-		if (extrabytecount == 1) {
-			lastword = extrabytesbuffer[0] << 24;
-		} else if (extrabytecount == 2) {
-			lastword = extrabytesbuffer[0] << 24 |
-				extrabytesbuffer[1] << 16;
-		} else if (extrabytecount == 3) {
-			lastword = extrabytesbuffer[0] << 24 |
-				extrabytesbuffer[1] << 16 |
-				extrabytesbuffer[2] << 8;
-		}
-		out_be32 (emac.sendfifo.databaseaddress, lastword);
-	}
-
-	/* Loop on the MAC's status to wait for any pause to complete */
-	intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
-	while ((intrstatus & XEM_EIR_XMIT_PAUSE_MASK) != 0) {
-		intrstatus = in_be32 ((emac.baseaddress) +
-					XIIF_V123B_IISR_OFFSET);
-		/* Clear the pause status from the transmit status register */
-		out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
-				intrstatus & XEM_EIR_XMIT_PAUSE_MASK);
-	}
-
-	/*
-	 * Set the MAC's transmit packet length register to tell it to transmit
-	 */
-	out_be32 (emac.baseaddress + XEM_TPLR_OFFSET, len);
-
-	/*
-	 * Loop on the MAC's status to wait for the transmit to complete.
-	 * The transmit status is in the FIFO when the XMIT_DONE bit is set.
-	 */
-	do {
-		intrstatus = in_be32 ((emac.baseaddress) +
-						XIIF_V123B_IISR_OFFSET);
-	}
-	while ((intrstatus & XEM_EIR_XMIT_DONE_MASK) == 0);
-
-	xmitstatus = in_be32 (emac.baseaddress + XEM_TSR_OFFSET);
-
-	if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
-					XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
-		debug ("Transmitting overrun error\n");
-		return 0;
-	} else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
-					XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
-		debug ("Transmitting underrun error\n");
-		return 0;
-	}
-
-	/* Clear the interrupt status register of transmit statuses */
-	out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
-				intrstatus & XEM_EIR_XMIT_ALL_MASK);
-
-	/*
-	 * Collision errors are stored in the transmit status register
-	 * instead of the interrupt status register
-	 */
-	if ((xmitstatus & XEM_TSR_EXCESS_DEFERRAL_MASK) ||
-				(xmitstatus & XEM_TSR_LATE_COLLISION_MASK)) {
-		debug ("Transmitting collision error\n");
-		return 0;
-	}
-	return 1;
-}
-
-int eth_rx(void)
-{
-	u32 pktlength;
-	u32 intrstatus;
-	u32 fifocount;
-	u32 wordcount;
-	u32 extrabytecount;
-	u32 lastword;
-	u8 *extrabytesbuffer;
-
-	if (in_be32 (emac.recvfifo.regbaseaddress + XPF_COUNT_STATUS_REG_OFFSET)
-			& XPF_DEADLOCK_MASK) {
-		out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
-		debug ("Receiving FIFO deadlock\n");
-		return 0;
-	}
-
-	/*
-	 * Get the interrupt status to know what happened (whether an error
-	 * occurred and/or whether frames have been received successfully).
-	 * When clearing the intr status register, clear only statuses that
-	 * pertain to receive.
-	 */
-	intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
-	/*
-	 * Before reading from the length FIFO, make sure the length FIFO is not
-	 * empty. We could cause an underrun error if we try to read from an
-	 * empty FIFO.
-	 */
-	if (!(intrstatus & XEM_EIR_RECV_DONE_MASK)) {
-		/* debug ("Receiving FIFO is empty\n"); */
-		return 0;
-	}
-
-	/*
-	 * Determine, from the MAC, the length of the next packet available
-	 * in the data FIFO (there should be a non-zero length here)
-	 */
-	pktlength = in_be32 (emac.baseaddress + XEM_RPLR_OFFSET);
-	if (!pktlength) {
-		return 0;
-	}
-
-	/*
-	 * Write the RECV_DONE bit in the status register to clear it. This bit
-	 * indicates the RPLR is non-empty, and we know it's set at this point.
-	 * We clear it so that subsequent entry into this routine will reflect
-	 * the current status. This is done because the non-empty bit is latched
-	 * in the IPIF, which means it may indicate a non-empty condition even
-	 * though there is something in the FIFO.
-	 */
-	out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
-						XEM_EIR_RECV_DONE_MASK);
-
-	fifocount = in_be32 (emac.recvfifo.regbaseaddress +
-				XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
-
-	if ((fifocount * 4) < pktlength) {
-		debug ("Receiving FIFO is smaller than packet size.\n");
-		return 0;
-	}
-
-	wordcount = pktlength >> 2;
-	extrabytecount = pktlength & 0x3;
-
-	for (fifocount = 0; fifocount < wordcount; fifocount++) {
-		etherrxbuff[fifocount] =
-				in_be32 (emac.recvfifo.databaseaddress);
-	}
-
-	/*
-	 * if there are extra bytes to handle, read the last word from the FIFO
-	 * and insert the extra bytes into the buffer
-	 */
-	if (extrabytecount > 0) {
-		extrabytesbuffer = (u8 *) (etherrxbuff + wordcount);
-
-		lastword = in_be32 (emac.recvfifo.databaseaddress);
-
-		/*
-		 * one extra byte in the last word, put the byte into the next
-		 * location of the buffer, bytes in a word of the FIFO are
-		 * ordered from most significant byte to least
-		 */
-		if (extrabytecount == 1) {
-			extrabytesbuffer[0] = (u8) (lastword >> 24);
-		} else if (extrabytecount == 2) {
-			extrabytesbuffer[0] = (u8) (lastword >> 24);
-			extrabytesbuffer[1] = (u8) (lastword >> 16);
-		} else if (extrabytecount == 3) {
-			extrabytesbuffer[0] = (u8) (lastword >> 24);
-			extrabytesbuffer[1] = (u8) (lastword >> 16);
-			extrabytesbuffer[2] = (u8) (lastword >> 8);
-		}
-	}
-	NetReceive((uchar *)etherrxbuff, pktlength);
-	return 1;
-}