2007-11-08 15:24:51 +00:00
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/*
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* (C) Copyright 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
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* (C) Copyright 2007 Pengutronix, Juergen Beisert <j.beisert@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#define DEBUG
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#include <common.h>
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#include <malloc.h>
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#include <net.h>
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#include <init.h>
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#include <miiphy.h>
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#include <driver.h>
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#include <miiphy.h>
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#include <fec.h>
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#include "fec_imx27.h"
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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#include <clock.h>
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#include <asm/arch/clock.h>
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#include <xfuncs.h>
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#define CONFIG_PHY_ADDR 1 /* FIXME */
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typedef struct {
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uint8_t data[1500]; /* actual data */
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int length; /* actual length */
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int used; /* buffer in use or not */
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uint8_t head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */
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} NBUF;
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/*
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* MII-interface related functions
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*/
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static int fec_miiphy_read(struct miiphy_device *mdev, uint8_t phyAddr,
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uint8_t regAddr, uint16_t * retVal)
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{
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struct eth_device *edev = mdev->edev;
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fec_priv *fec = (fec_priv *)edev->priv;
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uint32_t reg; /* convenient holder for the PHY register */
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uint32_t phy; /* convenient holder for the PHY */
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uint64_t start;
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/*
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* reading from any PHY's register is done by properly
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* programming the FEC's MII data register.
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*/
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writel(FEC_IEVENT_MII, &fec->eth->ievent);
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reg = regAddr << FEC_MII_DATA_RA_SHIFT;
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phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
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writel(FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg, &fec->eth->mii_data);
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/*
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* wait for the related interrupt
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*/
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start = get_time_ns();
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while (!(readl(&fec->eth->ievent) & FEC_IEVENT_MII)) {
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if (is_timeout(start, MSECOND)) {
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printf("Read MDIO failed...\n");
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return -1;
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}
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}
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/*
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* clear mii interrupt bit
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*/
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writel(FEC_IEVENT_MII, &fec->eth->ievent);
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/*
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* it's now safe to read the PHY's register
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*/
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*retVal = readl(&fec->eth->mii_data);
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return 0;
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}
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static int fec_miiphy_write(struct miiphy_device *mdev, uint8_t phyAddr,
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uint8_t regAddr, uint16_t data)
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{
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struct eth_device *edev = mdev->edev;
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fec_priv *fec = (fec_priv *)edev->priv;
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uint32_t reg; /* convenient holder for the PHY register */
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uint32_t phy; /* convenient holder for the PHY */
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uint64_t start;
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reg = regAddr << FEC_MII_DATA_RA_SHIFT;
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phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
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writel(FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
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FEC_MII_DATA_TA | phy | reg | data, &fec->eth->mii_data);
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/*
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* wait for the MII interrupt
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*/
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start = get_time_ns();
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while (!(readl(&fec->eth->ievent) & FEC_IEVENT_MII)) {
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if (is_timeout(start, MSECOND)) {
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printf("Write MDIO failed...\n");
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return -1;
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}
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}
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/*
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* clear MII interrupt bit
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*/
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writel(FEC_IEVENT_MII, &fec->eth->ievent);
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return 0;
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}
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static int fec_rx_task_enable(fec_priv *fec)
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{
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writel(1 << 24, &fec->eth->r_des_active);
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return 0;
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}
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static int fec_rx_task_disable(fec_priv *fec)
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{
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return 0;
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}
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static int fec_tx_task_enable(fec_priv *fec)
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{
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writel(1 << 24, &fec->eth->x_des_active);
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return 0;
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}
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static int fec_tx_task_disable(fec_priv *fec)
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{
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return 0;
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}
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/**
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* Initialize receive task's buffer descriptors
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* @param[in] fec all we know about the device yet
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* @param[in] count receive buffer count to be allocated
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* @param[in] size size of each receive buffer
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* @return 0 on success
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*
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* For this task we need additional memory for the data buffers. And each
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* data buffer requires some alignment. Thy must be aligned to a specific
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* boundary each (4 byte).
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*/
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static int fec_rbd_init(fec_priv *fec, int count, int size)
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{
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int ix;
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static int once = 0;
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uint32_t p=0;
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if (!once) {
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/* reserve data memory and consider alignment */
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p = (uint32_t)xzalloc(size * count + 0x04) + 0x03;
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p &= ~0x03;
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}
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for (ix = 0; ix < count; ix++) {
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if (!once) {
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writel(p, &fec->rbd_base[ix].data_pointer);
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p += size;
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}
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writew(FEC_RBD_EMPTY, &fec->rbd_base[ix].status);
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writew(0, &fec->rbd_base[ix].data_length);
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}
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once = 1; /* malloc done now (and once) */
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/*
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* mark the last RBD to close the ring
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*/
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writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &fec->rbd_base[ix - 1].status);
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fec->rbd_index = 0;
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return 0;
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}
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/**
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* Initialize transmit task's buffer descriptors
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* @param[in] fec all we know about the device yet
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*
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* Transmit buffers are created externally. We only have to init the BDs here.
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* Note: There is a race condition in the hardware. When only one BD is in
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* use it must be marked with the WRAP bit to use it for every transmitt.
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* This bit in combination with the READY bit results into double transmit
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* of each data buffer. It seems the state machine checks READY earlier then
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* resetting it after the first transfer.
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* Using two BDs solves this issue.
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*/
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static void fec_tbd_init(fec_priv *fec)
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{
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writew(0x0000, &fec->tbd_base[0].status);
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writew(FEC_TBD_WRAP, &fec->tbd_base[1].status);
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fec->tbd_index = 0;
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}
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/**
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* Mark the given read buffer descriptor as free
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* @param[in] last 1 if this is the last buffer descriptor in the chain, else 0
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* @param[in] pRbd buffer descriptor to mark free again
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*/
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static void fec_rbd_clean(int last, FEC_BD *pRbd)
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{
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/*
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* Reset buffer descriptor as empty
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*/
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if (last)
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writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &pRbd->status);
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else
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writew(FEC_RBD_EMPTY, &pRbd->status);
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/*
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* no data in it
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*/
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writew(0, &pRbd->data_length);
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}
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static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
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{
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/* no eeprom */
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return -1;
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}
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static int fec_set_hwaddr(struct eth_device *dev, unsigned char *mac)
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{
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fec_priv *fec = (fec_priv *)dev->priv;
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//#define WTF_IS_THIS
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#ifdef WTF_IS_THIS
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uint32_t crc = 0xffffffff; /* initial value */
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uint8_t currByte; /* byte for which to compute the CRC */
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int byte; /* loop - counter */
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int bit; /* loop - counter */
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/*
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* The algorithm used is the following:
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* we loop on each of the six bytes of the provided address,
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* and we compute the CRC by left-shifting the previous
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* value by one position, so that each bit in the current
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* byte of the address may contribute the calculation. If
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* the latter and the MSB in the CRC are different, then
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* the CRC value so computed is also ex-ored with the
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* "polynomium generator". The current byte of the address
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* is also shifted right by one bit at each iteration.
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* This is because the CRC generatore in hardware is implemented
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* as a shift-register with as many ex-ores as the radixes
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* in the polynomium. This suggests that we represent the
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* polynomiumm itself as a 32-bit constant.
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*/
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for (byte = 0; byte < 6; byte++) {
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currByte = mac[byte];
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for (bit = 0; bit < 8; bit++) {
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if ((currByte & 0x01) ^ (crc & 0x01)) {
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crc >>= 1;
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crc = crc ^ 0xedb88320;
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} else {
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crc >>= 1;
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}
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currByte >>= 1;
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}
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}
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crc = crc >> 26;
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/*
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* Set individual hash table register
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*/
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if (crc >= 32) {
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fec->eth->iaddr1 = (1 << (crc - 32));
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fec->eth->iaddr2 = 0;
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} else {
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fec->eth->iaddr1 = 0;
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fec->eth->iaddr2 = (1 << crc);
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}
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#else
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writel(0, &fec->eth->iaddr1);
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writel(0, &fec->eth->iaddr2);
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writel(0, &fec->eth->gaddr1);
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writel(0, &fec->eth->gaddr2);
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#endif
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/*
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* Set physical address
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*/
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writel((mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3], &fec->eth->paddr1);
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writel((mac[4] << 24) + (mac[5] << 16) + 0x8808, &fec->eth->paddr2);
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return 0;
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}
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static int fec_init(struct eth_device *dev)
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{
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fec_priv *fec = (fec_priv *)dev->priv;
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/*
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* Initialize RxBD/TxBD rings
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*/
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fec_rbd_init(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE);
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fec_tbd_init(fec);
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/*
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* Clear FEC-Lite interrupt event register(IEVENT)
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*/
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writel(0xffffffff, &fec->eth->ievent);
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/*
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* Set interrupt mask register
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*/
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writel(0x00000000, &fec->eth->imask);
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/*
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* Set FEC-Lite receive control register(R_CNTRL):
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*/
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if (fec->xcv_type == SEVENWIRE) {
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/*
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* Frame length=1518; 7-wire mode
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*/
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writel(0x05ee0020, &fec->eth->r_cntrl); /* FIXME 0x05ee0000 */
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} else {
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/*
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* Frame length=1518; MII mode;
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*/
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writel(0x05ee0024, &fec->eth->r_cntrl); /* FIXME 0x05ee0004 */
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/*
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* Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
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* and do not drop the Preamble.
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*/
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writel(((imx_get_ahbclk() >> 20) / 5) << 1, &fec->eth->mii_speed); /* No MII for 7-wire mode */
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}
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/*
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* Set Opcode/Pause Duration Register
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*/
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writel(0x00010020, &fec->eth->op_pause); /* FIXME 0xffff0020; */
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writel(0x2, &fec->eth->x_wmrk);
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/*
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* Set multicast address filter
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*/
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writel(0x00000000, &fec->eth->gaddr1);
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writel(0x00000000, &fec->eth->gaddr2);
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/* size of each buffer */
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2007-11-09 08:57:16 +00:00
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writel(FEC_MAX_PKT_SIZE, &fec->eth->emrbr);
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2007-11-08 15:24:51 +00:00
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if (fec->xcv_type != SEVENWIRE)
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miiphy_restart_aneg(&fec->miiphy);
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return 0;
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}
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/**
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* Start the FEC engine
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* @param[in] dev Our device to handle
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*/
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static int fec_open(struct eth_device *edev)
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{
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|
|
fec_priv *fec = (fec_priv *)edev->priv;
|
|
|
|
|
|
|
|
writel(1 << 2, &fec->eth->x_cntrl); /* full-duplex, heartbeat disabled */
|
|
|
|
fec->rbd_index = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Enable FEC-Lite controller
|
|
|
|
*/
|
|
|
|
writel(FEC_ECNTRL_ETHER_EN, &fec->eth->ecntrl);
|
|
|
|
/*
|
|
|
|
* Enable SmartDMA receive task
|
|
|
|
*/
|
|
|
|
fec_rx_task_enable(fec);
|
|
|
|
|
|
|
|
if (fec->xcv_type != SEVENWIRE) {
|
|
|
|
miiphy_wait_aneg(&fec->miiphy);
|
|
|
|
miiphy_print_status(&fec->miiphy);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Halt the FEC engine
|
|
|
|
* @param[in] dev Our device to handle
|
|
|
|
*/
|
|
|
|
static void fec_halt(struct eth_device *dev)
|
|
|
|
{
|
|
|
|
fec_priv *fec = (fec_priv *)dev->priv;
|
|
|
|
int counter = 0xffff;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* issue graceful stop command to the FEC transmitter if necessary
|
|
|
|
*/
|
|
|
|
writel(FEC_ECNTRL_RESET | readl(&fec->eth->x_cntrl), &fec->eth->x_cntrl);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* wait for graceful stop to register
|
|
|
|
*/
|
|
|
|
while ((counter--) && (!(readl(&fec->eth->ievent) & FEC_IEVENT_GRA)))
|
|
|
|
; /* FIXME ensure time */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disable SmartDMA tasks
|
|
|
|
*/
|
|
|
|
fec_tx_task_disable(fec);
|
|
|
|
fec_rx_task_disable(fec);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disable the Ethernet Controller
|
|
|
|
* Note: this will also reset the BD index counter!
|
|
|
|
*/
|
|
|
|
writel(0, &fec->eth->ecntrl);
|
|
|
|
fec->rbd_index = 0;
|
|
|
|
fec->tbd_index = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Transmit one frame
|
|
|
|
* @param[in] dev Our ethernet device to handle
|
|
|
|
* @param[in] eth_data Pointer to the data to be transmitted
|
|
|
|
* @param[in] data_length Data count in bytes
|
|
|
|
* @return 0 on success
|
|
|
|
*/
|
|
|
|
static int fec_send(struct eth_device *dev, void *eth_data, int data_length)
|
|
|
|
{
|
|
|
|
unsigned int status;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This routine transmits one frame. This routine only accepts
|
|
|
|
* 6-byte Ethernet addresses.
|
|
|
|
*/
|
|
|
|
fec_priv *fec = (fec_priv *)dev->priv;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check for valid length of data.
|
|
|
|
*/
|
|
|
|
if ((data_length > 1500) || (data_length <= 0)) {
|
|
|
|
printf("Payload (%d) to large!\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2007-11-09 08:57:16 +00:00
|
|
|
if ((uint32_t)eth_data & 0x0F)
|
2007-11-08 15:24:51 +00:00
|
|
|
printf("%s: Warning: Transmitt data not aligned!\n", __FUNCTION__);
|
2007-11-09 08:57:16 +00:00
|
|
|
|
2007-11-08 15:24:51 +00:00
|
|
|
/*
|
|
|
|
* Setup the transmitt buffer
|
|
|
|
* Note: We are always using the first buffer for transmission,
|
|
|
|
* the second will be empty and only used to stop the DMA engine
|
|
|
|
*/
|
|
|
|
writew(data_length, &fec->tbd_base[fec->tbd_index].data_length);
|
|
|
|
writel((uint32_t)eth_data, &fec->tbd_base[fec->tbd_index].data_pointer);
|
|
|
|
/*
|
|
|
|
* update BD's status now
|
|
|
|
* This block:
|
|
|
|
* - is always the last in a chain (means no chain)
|
|
|
|
* - should transmitt the CRC
|
|
|
|
* - might be the last BD in the list, so the address counter should
|
|
|
|
* wrap (-> keep the WRAP flag)
|
|
|
|
*/
|
|
|
|
status = readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_WRAP;
|
|
|
|
status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
|
|
|
|
writew(status, &fec->tbd_base[fec->tbd_index].status);
|
|
|
|
/*
|
|
|
|
* Enable SmartDMA transmit task
|
|
|
|
*/
|
|
|
|
fec_tx_task_enable(fec);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* wait until frame is sent .
|
|
|
|
*/
|
|
|
|
while (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY) {
|
|
|
|
/* FIXME: Timeout */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* for next transmission use the other buffer */
|
|
|
|
if (fec->tbd_index)
|
|
|
|
fec->tbd_index = 0;
|
|
|
|
else
|
|
|
|
fec->tbd_index = 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Pull one frame from the card
|
|
|
|
* @param[in] dev Our ethernet device to handle
|
|
|
|
* @return Length of packet read
|
|
|
|
*/
|
|
|
|
static int fec_recv(struct eth_device *dev)
|
|
|
|
{
|
|
|
|
fec_priv *fec = (fec_priv *)dev->priv;
|
|
|
|
FEC_BD *rbd = &fec->rbd_base[fec->rbd_index];
|
|
|
|
unsigned long ievent;
|
|
|
|
int frame_length, len = 0;
|
|
|
|
NBUF *frame;
|
|
|
|
uint16_t bd_status;
|
|
|
|
uchar buff[FEC_MAX_PKT_SIZE];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check if any critical events have happened
|
|
|
|
*/
|
|
|
|
ievent = readl(&fec->eth->ievent);
|
|
|
|
writel(ievent, &fec->eth->ievent);
|
|
|
|
if (ievent & (FEC_IEVENT_BABT | FEC_IEVENT_XFIFO_ERROR |
|
|
|
|
FEC_IEVENT_RFIFO_ERROR)) {
|
|
|
|
/* BABT, Rx/Tx FIFO errors */
|
|
|
|
fec_halt(dev);
|
|
|
|
fec_init(dev);
|
|
|
|
printf("some error: 0x%08x\n", ievent);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (ievent & FEC_IEVENT_HBERR) {
|
|
|
|
/* Heartbeat error */
|
|
|
|
writel(0x00000001 | readl(&fec->eth->x_cntrl), &fec->eth->x_cntrl);
|
|
|
|
}
|
|
|
|
if (ievent & FEC_IEVENT_GRA) {
|
|
|
|
/* Graceful stop complete */
|
|
|
|
if (readl(&fec->eth->x_cntrl) & 0x00000001) {
|
|
|
|
fec_halt(dev);
|
|
|
|
writel(~0x00000001 & readl(&fec->eth->x_cntrl), &fec->eth->x_cntrl);
|
|
|
|
fec_init(dev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ensure reading the right buffer status
|
|
|
|
*/
|
|
|
|
bd_status = readw(&rbd->status);
|
|
|
|
|
|
|
|
if (!(bd_status & FEC_RBD_EMPTY)) {
|
|
|
|
if ((bd_status & FEC_RBD_LAST) && !(bd_status & FEC_RBD_ERR) &&
|
|
|
|
((readw(&rbd->data_length) - 4) > 14)) {
|
|
|
|
/*
|
|
|
|
* Get buffer address and size
|
|
|
|
*/
|
|
|
|
frame = (NBUF *)readl(&rbd->data_pointer);
|
|
|
|
frame_length = readw(&rbd->data_length) - 4;
|
|
|
|
/*
|
|
|
|
* Fill the buffer and pass it to upper layers
|
|
|
|
*/
|
|
|
|
memcpy(buff, frame->data, frame_length);
|
|
|
|
NetReceive(buff, frame_length);
|
|
|
|
len = frame_length;
|
|
|
|
} else {
|
|
|
|
if (bd_status & FEC_RBD_ERR) {
|
|
|
|
printf("error frame: 0x%08x 0x%08x\n", rbd, bd_status);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* free the current buffer, restart the engine
|
|
|
|
* and move forward to the next buffer
|
|
|
|
*/
|
|
|
|
fec_rbd_clean(fec->rbd_index == (FEC_RBD_NUM - 1) ? 1 : 0, rbd);
|
|
|
|
fec_rx_task_enable(fec);
|
|
|
|
fec->rbd_index = (fec->rbd_index + 1) % FEC_RBD_NUM;
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
int fec_probe(struct device_d *dev)
|
|
|
|
{
|
|
|
|
struct fec_platform_data *pdata = (struct fec_platform_data *)dev->platform_data;
|
|
|
|
struct eth_device *edev;
|
|
|
|
fec_priv *fec;
|
|
|
|
uint32_t base;
|
|
|
|
|
|
|
|
PCCR0 |= PCCR0_FEC_EN;
|
|
|
|
edev = (struct eth_device *)malloc(sizeof(struct eth_device));
|
|
|
|
dev->type_data = edev;
|
|
|
|
fec = (fec_priv*)malloc(sizeof(*fec));
|
|
|
|
edev->priv = fec;
|
|
|
|
edev->dev = dev;
|
|
|
|
edev->open = fec_open,
|
|
|
|
edev->init = fec_init,
|
|
|
|
edev->send = fec_send,
|
|
|
|
edev->recv = fec_recv,
|
|
|
|
edev->halt = fec_halt,
|
|
|
|
edev->get_ethaddr = fec_get_hwaddr,
|
|
|
|
edev->set_ethaddr = fec_set_hwaddr,
|
|
|
|
|
|
|
|
fec->eth = (ethernet_regs *)dev->map_base;
|
|
|
|
|
|
|
|
/* Reset chip. */
|
|
|
|
writel(FEC_ECNTRL_RESET, &fec->eth->ecntrl);
|
|
|
|
while(readl(&fec->eth->ecntrl) & 1) {
|
|
|
|
udelay(10);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* reserve memory for both buffer descriptor chains at once
|
|
|
|
* Datasheet forces the startaddress of each chain is 16 byte aligned
|
|
|
|
*/
|
|
|
|
base = (uint32_t)xzalloc( (2 + FEC_RBD_NUM) * sizeof(FEC_BD) + 0x20 );
|
|
|
|
base += 0x0f;
|
|
|
|
base &= ~0x0f;
|
|
|
|
fec->rbd_base = (FEC_BD*)base;
|
|
|
|
base += FEC_RBD_NUM * sizeof(FEC_BD) + 0x0f;
|
|
|
|
base &= ~0x0f;
|
|
|
|
fec->tbd_base = (FEC_BD*)base;
|
|
|
|
|
|
|
|
writel((uint32_t)fec->tbd_base, &fec->eth->etdsr);
|
|
|
|
writel((uint32_t)fec->rbd_base, &fec->eth->erdsr);
|
|
|
|
|
|
|
|
fec->xcv_type = pdata->xcv_type;
|
|
|
|
|
|
|
|
sprintf(dev->name, "FEC ETHERNET");
|
|
|
|
|
|
|
|
if (fec->xcv_type != SEVENWIRE) {
|
|
|
|
fec->miiphy.read = fec_miiphy_read;
|
|
|
|
fec->miiphy.write = fec_miiphy_write;
|
|
|
|
fec->miiphy.address = CONFIG_PHY_ADDR;
|
|
|
|
fec->miiphy.flags = pdata->xcv_type == MII10 ? MIIPHY_FORCE_10 : 0;
|
|
|
|
fec->miiphy.edev = edev;
|
|
|
|
|
|
|
|
miiphy_register(&fec->miiphy);
|
|
|
|
}
|
|
|
|
|
|
|
|
eth_register(edev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct driver_d imx27_driver = {
|
|
|
|
.name = "fec_imx27",
|
|
|
|
.probe = fec_probe,
|
|
|
|
.type = DEVICE_TYPE_ETHER,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int fec_register(void)
|
|
|
|
{
|
|
|
|
register_driver(&imx27_driver);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
device_initcall(fec_register);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* @file
|
|
|
|
* @brief Network driver for FreeScale's FEC implementation.
|
|
|
|
* This type of hardware can be found on i.MX27 CPUs
|
|
|
|
*/
|