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| author | wdenk <wdenk> | 2004-02-12 00:47:09 +0000 | 
|---|---|---|
| committer | wdenk <wdenk> | 2004-02-12 00:47:09 +0000 | 
| commit | bf9e3b38f77c2eac620263dd60437c6ec47a27bf (patch) | |
| tree | d03891090553d167f3eb08d7f9c3f2532e43fcc2 /cpu/coldfire/fec.c | |
| parent | a2d18bb7d31e7b971386fef505ff0218f3b6e893 (diff) | |
| download | olio-uboot-2014.01-bf9e3b38f77c2eac620263dd60437c6ec47a27bf.tar.xz olio-uboot-2014.01-bf9e3b38f77c2eac620263dd60437c6ec47a27bf.zip | |
* Some code cleanup
* Patch by Josef Baumgartner, 10 Feb 2004:
  Fixes for Coldfire port
* Patch by Brad Kemp, 11 Feb 2004:
  Fix CFI flash driver problems
Diffstat (limited to 'cpu/coldfire/fec.c')
| -rw-r--r-- | cpu/coldfire/fec.c | 296 | 
1 files changed, 0 insertions, 296 deletions
| diff --git a/cpu/coldfire/fec.c b/cpu/coldfire/fec.c deleted file mode 100644 index 50627415e..000000000 --- a/cpu/coldfire/fec.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - * (C) Copyright 2000 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * 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 - */ - -#include <common.h> -#include <commproc.h> -#include <net.h> -#include <command.h> - - -/************************************************************** - * - * FEC Ethernet Initialization Routine - * - *************************************************************/ - -#define FEC_ECNTRL_ETHER_EN	0x00000002 -#define FEC_ECNTRL_RESET	0x00000001 - -#define FEC_RCNTRL_BC_REJ	0x00000010 -#define FEC_RCNTRL_PROM		0x00000008 -#define FEC_RCNTRL_MII_MODE	0x00000004 -#define FEC_RCNTRL_DRT		0x00000002 -#define FEC_RCNTRL_LOOP		0x00000001 - -#define FEC_TCNTRL_FDEN		0x00000004 -#define FEC_TCNTRL_HBC		0x00000002 -#define FEC_TCNTRL_GTS		0x00000001 - -#define	FEC_RESET_DELAY		50000 - - -/* Ethernet Transmit and Receive Buffers */ -#define DBUF_LENGTH  1520 -#define TX_BUF_CNT 2 -#define TOUT_LOOP 100 - -#define PKT_MAXBUF_SIZE		1518 -#define PKT_MINBUF_SIZE		64 -#define PKT_MAXBLR_SIZE		1520 - - -#ifdef CONFIG_M5272 -#define FEC_ADDR 0x10000840 -#endif -#ifdef CONFIG_M5282 -#define FEC_ADDR 0x40001000 -#endif - -#undef	ET_DEBUG - -#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET) - - -static char txbuf[DBUF_LENGTH]; - -static uint rxIdx;		/* index of the current RX buffer */ -static uint txIdx;		/* index of the current TX buffer */ - -/* -  * FEC Ethernet Tx and Rx buffer descriptors allocated at the -  *  immr->udata_bd address on Dual-Port RAM -  * Provide for Double Buffering -  */ - -typedef volatile struct CommonBufferDescriptor { -	cbd_t rxbd[PKTBUFSRX];	/* Rx BD */ -	cbd_t txbd[TX_BUF_CNT];	/* Tx BD */ -} RTXBD; - -static RTXBD *rtx = 0x380000; - - -int eth_send (volatile void *packet, int length) -{ -	int j, rc; -	volatile fec_t *fecp = FEC_ADDR; - -	/* section 16.9.23.3 -	 * Wait for ready -	 */ -	j = 0; -	while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) -	       && (j < TOUT_LOOP)) { -		udelay (1); -		j++; -	} -	if (j >= TOUT_LOOP) { -		printf ("TX not ready\n"); -	} - -	rtx->txbd[txIdx].cbd_bufaddr = (uint) packet; -	rtx->txbd[txIdx].cbd_datlen = length; -	rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST; - -	/* Activate transmit Buffer Descriptor polling */ -	fecp->fec_x_des_active = 0x01000000;	/* Descriptor polling active    */ - -	j = 0; -	while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) -	       && (j < TOUT_LOOP)) { -		udelay (1); -		j++; -	} -	if (j >= TOUT_LOOP) { -		printf ("TX timeout\n"); -	} -#ifdef ET_DEBUG -	printf ("%s[%d] %s: cycles: %d    status: %x  retry cnt: %d\n", -		__FILE__, __LINE__, __FUNCTION__, j, rtx->txbd[txIdx].cbd_sc, -		(rtx->txbd[txIdx].cbd_sc & 0x003C) >> 2); -#endif -	/* return only status bits */ ; -	rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS); - -	txIdx = (txIdx + 1) % TX_BUF_CNT; - -	return rc; -} - -int eth_rx (void) -{ -	int length; -	volatile fec_t *fecp = FEC_ADDR; - -	for (;;) { -		/* section 16.9.23.2 */ -		if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) { -			length = -1; -			break;	/* nothing received - leave for() loop */ -		} - -		length = rtx->rxbd[rxIdx].cbd_datlen; - -		if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) { -#ifdef ET_DEBUG -			printf ("%s[%d] err: %x\n", -				__FUNCTION__, __LINE__, -				rtx->rxbd[rxIdx].cbd_sc); -#endif -		} else { -			/* Pass the packet up to the protocol layers. */ -			NetReceive (NetRxPackets[rxIdx], length - 4); -		} - -		/* Give the buffer back to the FEC. */ -		rtx->rxbd[rxIdx].cbd_datlen = 0; - -		/* wrap around buffer index when necessary */ -		if ((rxIdx + 1) >= PKTBUFSRX) { -			rtx->rxbd[PKTBUFSRX - 1].cbd_sc = -				(BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY); -			rxIdx = 0; -		} else { -			rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY; -			rxIdx++; -		} - -		/* Try to fill Buffer Descriptors */ -		fecp->fec_r_des_active = 0x01000000;	/* Descriptor polling active    */ -	} - -	return length; -} - - -int eth_init (bd_t * bd) -{ - -	int i; -	volatile fec_t *fecp = FEC_ADDR; - -	/* Whack a reset. -	 * A delay is required between a reset of the FEC block and -	 * initialization of other FEC registers because the reset takes -	 * some time to complete. If you don't delay, subsequent writes -	 * to FEC registers might get killed by the reset routine which is -	 * still in progress. -	 */ - -	fecp->fec_ecntrl = FEC_ECNTRL_RESET; -	for (i = 0; -	     (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY); -	     ++i) { -		udelay (1); -	} -	if (i == FEC_RESET_DELAY) { -		printf ("FEC_RESET_DELAY timeout\n"); -		return 0; -	} - -	/* We use strictly polling mode only -	 */ -	fecp->fec_imask = 0; - -	/* Clear any pending interrupt */ -	fecp->fec_ievent = 0xffffffff; - -	/* Set station address   */ -#define ea bd->bi_enetaddr -	fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) | -		(ea[2] << 8) | (ea[3]); -	fecp->fec_addr_high = (ea[4] << 24) | (ea[5] << 16); -#undef ea - -	/* Clear multicast address hash table -	 */ -	fecp->fec_hash_table_high = 0; -	fecp->fec_hash_table_low = 0; - -	/* Set maximum receive buffer size. -	 */ -	fecp->fec_r_buff_size = PKT_MAXBLR_SIZE; - -	/* -	 * Setup Buffers and Buffer Desriptors -	 */ -	rxIdx = 0; -	txIdx = 0; - -	/* -	 * Setup Receiver Buffer Descriptors (13.14.24.18) -	 * Settings: -	 *     Empty, Wrap -	 */ -	for (i = 0; i < PKTBUFSRX; i++) { -		rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY; -		rtx->rxbd[i].cbd_datlen = 0;	/* Reset */ -		rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i]; -	} -	rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP; - -	/* -	 * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19) -	 * Settings: -	 *    Last, Tx CRC -	 */ -	for (i = 0; i < TX_BUF_CNT; i++) { -		rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC; -		rtx->txbd[i].cbd_datlen = 0;	/* Reset */ -		rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]); -	} -	rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP; - -	/* Set receive and transmit descriptor base -	 */ -	fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]); -	fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]); - -	/* Enable MII mode -	 */ - -	/* Half duplex mode */ -	fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE << 16) | FEC_RCNTRL_MII_MODE; -	fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE << 16) | FEC_RCNTRL_MII_MODE; -	fecp->fec_x_cntrl = 0; - -	fecp->fec_mii_speed = 0; - -	/* Now enable the transmit and receive processing -	 */ -	fecp->fec_ecntrl = FEC_ECNTRL_ETHER_EN; - -	/* And last, try to fill Rx Buffer Descriptors */ -	fecp->fec_r_des_active = 0x01000000;	/* Descriptor polling active    */ - -	return 1; -} - - -void eth_halt (void) -{ -	volatile fec_t *fecp = FEC_ADDR; - -	fecp->fec_ecntrl = 0; -} -#endif |