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Diffstat (limited to 'drivers/net/xilinx_emac.c')
-rw-r--r--drivers/net/xilinx_emac.c374
1 files changed, 0 insertions, 374 deletions
diff --git a/drivers/net/xilinx_emac.c b/drivers/net/xilinx_emac.c
deleted file mode 100644
index 36e627a..0000000
--- a/drivers/net/xilinx_emac.c
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * (C) Copyright 2007 Michal Simek
- *
- * Michal SIMEK <monstr@monstr.eu>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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
- *
- * Based on Xilinx drivers
- *
- */
-
-#include <config.h>
-#include <common.h>
-#include <net.h>
-#include <asm/io.h>
-#include "xilinx_emac.h"
-
-#ifdef XILINX_EMAC
-
-#undef DEBUG
-
-#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)
-{
-#ifdef DEBUG
- puts ("eth_halt\n");
-#endif
-}
-
-int eth_init(bd_t * bis)
-{
- u32 helpreg;
-#ifdef DEBUG
- printf("EMAC Initialization Started\n\r");
-#endif
- 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 (!getenv("ethaddr")) {
- memcpy(bis->bi_enetaddr, emacaddr, ENET_ADDR_LENGTH);
- }
-
- /* Set the device station address high and low registers */
- helpreg = (bis->bi_enetaddr[0] << 8) | bis->bi_enetaddr[1];
- out_be32 (emac.baseaddress + XEM_SAH_OFFSET, helpreg);
- helpreg = (bis->bi_enetaddr[2] << 24) | (bis->bi_enetaddr[3] << 16) |
- (bis->bi_enetaddr[4] << 8) | bis->bi_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)) {
-#ifdef DEBUG
- puts ("Transmitting overrun error\n");
-#endif
- return 0;
- } else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
- XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
-#ifdef DEBUG
- puts ("Transmitting underrun error\n");
-#endif
- return 0;
- } else if (in_be32 (emac.sendfifo.regbaseaddress +
- XPF_COUNT_STATUS_REG_OFFSET) & XPF_DEADLOCK_MASK) {
-#ifdef DEBUG
- puts("Transmitting fifo error\n");
-#endif
- 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);
-#ifdef DEBUG
- puts ("Fifo is full\n");
-#endif
- 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) {
-#ifdef DEBUG
- puts ("Sending packet is larger then size of FIFO\n");
-#endif
- 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)) {
-#ifdef DEBUG
- puts ("Transmitting overrun error\n");
-#endif
- return 0;
- } else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
- XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
-#ifdef DEBUG
- puts ("Transmitting underrun error\n");
-#endif
- 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)) {
-#ifdef DEBUG
- puts ("Transmitting collision error\n");
-#endif
- 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);
-#ifdef DEBUG
- puts ("Receiving FIFO deadlock\n");
-#endif
- 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)) {
-#ifdef DEBUG
- /* puts("Receiving FIFO is empty\n"); */
-#endif
- 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) {
-#ifdef DEBUG
- puts ("Receiving FIFO is smaller than packet size.\n");
-#endif
- 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;
-}
-#endif