diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/fsl_mcdmafec.c | 571 | 
2 files changed, 572 insertions, 0 deletions
| diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 41e1bdeb3..b9723fa78 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -33,6 +33,7 @@ COBJS-y += dm9000x.o  COBJS-y += e1000.o  COBJS-y += eepro100.o  COBJS-y += enc28j60.o +COBJS-y += fsl_mcdmafec.o  COBJS-y += inca-ip_sw.o  COBJS-y += ks8695eth.o  COBJS-y += lan91c96.o diff --git a/drivers/net/fsl_mcdmafec.c b/drivers/net/fsl_mcdmafec.c new file mode 100644 index 000000000..0c876f33b --- /dev/null +++ b/drivers/net/fsl_mcdmafec.c @@ -0,0 +1,571 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2007 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * + * 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 <malloc.h> +#include <command.h> +#include <config.h> +#include <net.h> +#include <miiphy.h> + +#ifdef CONFIG_FSLDMAFEC +#undef	ET_DEBUG +#undef	MII_DEBUG + +/* Ethernet Transmit and Receive Buffers */ +#define DBUF_LENGTH		1520 +#define PKT_MAXBUF_SIZE		1518 +#define PKT_MINBUF_SIZE		64 +#define PKT_MAXBLR_SIZE		1536 +#define LAST_PKTBUFSRX		PKTBUFSRX - 1 +#define BD_ENET_RX_W_E		(BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY) +#define BD_ENET_TX_RDY_LST	(BD_ENET_TX_READY | BD_ENET_TX_LAST) +#define FIFO_ERRSTAT		(FIFO_STAT_RXW | FIFO_STAT_UF | FIFO_STAT_OF) + +/* RxBD bits definitions */ +#define BD_ENET_RX_ERR	(BD_ENET_RX_LG | BD_ENET_RX_NO | BD_ENET_RX_CR | \ +			 BD_ENET_RX_OV | BD_ENET_RX_TR) + +#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) +#include <asm/immap.h> +#include <asm/fsl_mcdmafec.h> + +#include "MCD_dma.h" + +DECLARE_GLOBAL_DATA_PTR; + +struct fec_info_dma fec_info[] = { +#ifdef CFG_FEC0_IOBASE +	{ +	 0,			/* index */ +	 CFG_FEC0_IOBASE,	/* io base */ +	 CFG_FEC0_PINMUX,	/* gpio pin muxing */ +	 CFG_FEC0_MIIBASE,	/* mii base */ +	 -1,			/* phy_addr */ +	 0,			/* duplex and speed */ +	 0,			/* phy name */ +	 0,			/* phyname init */ +	 0,			/* RX BD */ +	 0,			/* TX BD */ +	 0,			/* rx Index */ +	 0,			/* tx Index */ +	 0,			/* tx buffer */ +	 0,			/* initialized flag */ +	 (struct fec_info_dma *)-1,	/* next */ +	 FEC0_RX_TASK,		/* rxTask */ +	 FEC0_TX_TASK,		/* txTask */ +	 FEC0_RX_PRIORITY,	/* rxPri */ +	 FEC0_TX_PRIORITY,	/* txPri */ +	 FEC0_RX_INIT,		/* rxInit */ +	 FEC0_TX_INIT,		/* txInit */ +	 0,			/* usedTbdIndex */ +	 0,			/* cleanTbdNum */ +	 }, +#endif +#ifdef CFG_FEC1_IOBASE +	{ +	 1,			/* index */ +	 CFG_FEC1_IOBASE,	/* io base */ +	 CFG_FEC1_PINMUX,	/* gpio pin muxing */ +	 CFG_FEC1_MIIBASE,	/* mii base */ +	 -1,			/* phy_addr */ +	 0,			/* duplex and speed */ +	 0,			/* phy name */ +	 0,			/* phy name init */ +	 0,			/* RX BD */ +	 0,			/* TX BD */ +	 0,			/* rx Index */ +	 0,			/* tx Index */ +	 0,			/* tx buffer */ +	 0,			/* initialized flag */ +	 (struct fec_info_dma *)-1,	/* next */ +	 FEC1_RX_TASK,		/* rxTask */ +	 FEC1_TX_TASK,		/* txTask */ +	 FEC1_RX_PRIORITY,	/* rxPri */ +	 FEC1_TX_PRIORITY,	/* txPri */ +	 FEC1_RX_INIT,		/* rxInit */ +	 FEC1_TX_INIT,		/* txInit */ +	 0,			/* usedTbdIndex */ +	 0,			/* cleanTbdNum */ +	 } +#endif +}; + +static int fec_send(struct eth_device *dev, volatile void *packet, int length); +static int fec_recv(struct eth_device *dev); +static int fec_init(struct eth_device *dev, bd_t * bd); +static void fec_halt(struct eth_device *dev); + +#ifdef ET_DEBUG +static void dbg_fec_regs(struct eth_device *dev) +{ +	struct fec_info_dma *info = dev->priv; +	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); + +	printf("=====\n"); +	printf("ievent       %x - %x\n", (int)&fecp->eir, fecp->eir); +	printf("imask        %x - %x\n", (int)&fecp->eimr, fecp->eimr); +	printf("ecntrl       %x - %x\n", (int)&fecp->ecr, fecp->ecr); +	printf("mii_mframe   %x - %x\n", (int)&fecp->mmfr, fecp->mmfr); +	printf("mii_speed    %x - %x\n", (int)&fecp->mscr, fecp->mscr); +	printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc); +	printf("r_cntrl      %x - %x\n", (int)&fecp->rcr, fecp->rcr); +	printf("r hash       %x - %x\n", (int)&fecp->rhr, fecp->rhr); +	printf("x_cntrl      %x - %x\n", (int)&fecp->tcr, fecp->tcr); +	printf("padr_l       %x - %x\n", (int)&fecp->palr, fecp->palr); +	printf("padr_u       %x - %x\n", (int)&fecp->paur, fecp->paur); +	printf("op_pause     %x - %x\n", (int)&fecp->opd, fecp->opd); +	printf("iadr_u       %x - %x\n", (int)&fecp->iaur, fecp->iaur); +	printf("iadr_l       %x - %x\n", (int)&fecp->ialr, fecp->ialr); +	printf("gadr_u       %x - %x\n", (int)&fecp->gaur, fecp->gaur); +	printf("gadr_l       %x - %x\n", (int)&fecp->galr, fecp->galr); +	printf("x_wmrk       %x - %x\n", (int)&fecp->tfwr, fecp->tfwr); +	printf("r_fdata      %x - %x\n", (int)&fecp->rfdr, fecp->rfdr); +	printf("r_fstat      %x - %x\n", (int)&fecp->rfsr, fecp->rfsr); +	printf("r_fctrl      %x - %x\n", (int)&fecp->rfcr, fecp->rfcr); +	printf("r_flrfp      %x - %x\n", (int)&fecp->rlrfp, fecp->rlrfp); +	printf("r_flwfp      %x - %x\n", (int)&fecp->rlwfp, fecp->rlwfp); +	printf("r_frfar      %x - %x\n", (int)&fecp->rfar, fecp->rfar); +	printf("r_frfrp      %x - %x\n", (int)&fecp->rfrp, fecp->rfrp); +	printf("r_frfwp      %x - %x\n", (int)&fecp->rfwp, fecp->rfwp); +	printf("t_fdata      %x - %x\n", (int)&fecp->tfdr, fecp->tfdr); +	printf("t_fstat      %x - %x\n", (int)&fecp->tfsr, fecp->tfsr); +	printf("t_fctrl      %x - %x\n", (int)&fecp->tfcr, fecp->tfcr); +	printf("t_flrfp      %x - %x\n", (int)&fecp->tlrfp, fecp->tlrfp); +	printf("t_flwfp      %x - %x\n", (int)&fecp->tlwfp, fecp->tlwfp); +	printf("t_ftfar      %x - %x\n", (int)&fecp->tfar, fecp->tfar); +	printf("t_ftfrp      %x - %x\n", (int)&fecp->tfrp, fecp->tfrp); +	printf("t_ftfwp      %x - %x\n", (int)&fecp->tfwp, fecp->tfwp); +	printf("frst         %x - %x\n", (int)&fecp->frst, fecp->frst); +	printf("ctcwr        %x - %x\n", (int)&fecp->ctcwr, fecp->ctcwr); +} +#endif + +static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd, int dup_spd) +{ +	if ((dup_spd >> 16) == FULL) { +		/* Set maximum frame length */ +		fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE | +		    FEC_RCR_PROM | 0x100; +		fecp->tcr = FEC_TCR_FDEN; +	} else { +		/* Half duplex mode */ +		fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | +		    FEC_RCR_MII_MODE | FEC_RCR_DRT; +		fecp->tcr &= ~FEC_TCR_FDEN; +	} + +	if ((dup_spd & 0xFFFF) == _100BASET) { +#ifdef MII_DEBUG +		printf("100Mbps\n"); +#endif +		bd->bi_ethspeed = 100; +	} else { +#ifdef MII_DEBUG +		printf("10Mbps\n"); +#endif +		bd->bi_ethspeed = 10; +	} +} + +static int fec_send(struct eth_device *dev, volatile void *packet, int length) +{ +	struct fec_info_dma *info = dev->priv; +	cbd_t *pTbd, *pUsedTbd; +	u16 phyStatus; + +	miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &phyStatus); + +	/* process all the consumed TBDs */ +	while (info->cleanTbdNum < CFG_TX_ETH_BUFFER) { +		pUsedTbd = &info->txbd[info->usedTbdIdx]; +		if (pUsedTbd->cbd_sc & BD_ENET_TX_READY) { +#ifdef ET_DEBUG +			printf("Cannot clean TBD %d, in use\n", +			       info->cleanTbdNum); +#endif +			return 0; +		} + +		/* clean this buffer descriptor */ +		if (info->usedTbdIdx == (CFG_TX_ETH_BUFFER - 1)) +			pUsedTbd->cbd_sc = BD_ENET_TX_WRAP; +		else +			pUsedTbd->cbd_sc = 0; + +		/* update some indeces for a correct handling of the TBD ring */ +		info->cleanTbdNum++; +		info->usedTbdIdx = (info->usedTbdIdx + 1) % CFG_TX_ETH_BUFFER; +	} + +	/* Check for valid length of data. */ +	if ((length > 1500) || (length <= 0)) { +		return -1; +	} + +	/* Check the number of vacant TxBDs. */ +	if (info->cleanTbdNum < 1) { +		printf("No available TxBDs ...\n"); +		return -1; +	} + +	/* Get the first TxBD to send the mac header */ +	pTbd = &info->txbd[info->txIdx]; +	pTbd->cbd_datlen = length; +	pTbd->cbd_bufaddr = (u32) packet; +	pTbd->cbd_sc |= BD_ENET_TX_LAST | BD_ENET_TX_TC | BD_ENET_TX_READY; +	info->txIdx = (info->txIdx + 1) % CFG_TX_ETH_BUFFER; + +	/* Enable DMA transmit task */ +	MCD_continDma(info->txTask); + +	info->cleanTbdNum -= 1; + +	/* wait until frame is sent . */ +	while (pTbd->cbd_sc & BD_ENET_TX_READY) { +		udelay(10); +	} + +	return (int)(info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS); +} + +static int fec_recv(struct eth_device *dev) +{ +	struct fec_info_dma *info = dev->priv; +	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); + +	cbd_t *pRbd = &info->rxbd[info->rxIdx]; +	u32 ievent; +	int frame_length, len = 0; + +	/* Check if any critical events have happened */ +	ievent = fecp->eir; +	if (ievent != 0) { +		fecp->eir = ievent; + +		if (ievent & (FEC_EIR_BABT | FEC_EIR_TXERR | FEC_EIR_RXERR)) { +			printf("fec_recv: error\n"); +			fec_halt(dev); +			fec_init(dev, NULL); +			return 0; +		} + +		if (ievent & FEC_EIR_HBERR) { +			/* Heartbeat error */ +			fecp->tcr |= FEC_TCR_GTS; +		} + +		if (ievent & FEC_EIR_GRA) { +			/* Graceful stop complete */ +			if (fecp->tcr & FEC_TCR_GTS) { +				printf("fec_recv: tcr_gts\n"); +				fec_halt(dev); +				fecp->tcr &= ~FEC_TCR_GTS; +				fec_init(dev, NULL); +			} +		} +	} + +	if (!(pRbd->cbd_sc & BD_ENET_RX_EMPTY)) { +		if ((pRbd->cbd_sc & BD_ENET_RX_LAST) +		    && !(pRbd->cbd_sc & BD_ENET_RX_ERR) +		    && ((pRbd->cbd_datlen - 4) > 14)) { + +			/* Get buffer address and size */ +			frame_length = pRbd->cbd_datlen - 4; + +			/* Fill the buffer and pass it to upper layers */ +			NetReceive((volatile uchar *)pRbd->cbd_bufaddr, +				   frame_length); +			len = frame_length; +		} + +		/* Reset buffer descriptor as empty */ +		if ((info->rxIdx) == (PKTBUFSRX - 1)) +			pRbd->cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY); +		else +			pRbd->cbd_sc = BD_ENET_RX_EMPTY; + +		pRbd->cbd_datlen = PKTSIZE_ALIGN; + +		/* Now, we have an empty RxBD, restart the DMA receive task */ +		MCD_continDma(info->rxTask); + +		/* Increment BD count */ +		info->rxIdx = (info->rxIdx + 1) % PKTBUFSRX; +	} + +	return len; +} + +static void fec_set_hwaddr(volatile fecdma_t * fecp, u8 * mac) +{ +	u8 currByte;		/* byte for which to compute the CRC */ +	int byte;		/* loop - counter */ +	int bit;		/* loop - counter */ +	u32 crc = 0xffffffff;	/* initial value */ + +	for (byte = 0; byte < 6; byte++) { +		currByte = mac[byte]; +		for (bit = 0; bit < 8; bit++) { +			if ((currByte & 0x01) ^ (crc & 0x01)) { +				crc >>= 1; +				crc = crc ^ 0xedb88320; +			} else { +				crc >>= 1; +			} +			currByte >>= 1; +		} +	} + +	crc = crc >> 26; + +	/* Set individual hash table register */ +	if (crc >= 32) { +		fecp->ialr = (1 << (crc - 32)); +		fecp->iaur = 0; +	} else { +		fecp->ialr = 0; +		fecp->iaur = (1 << crc); +	} + +	/* Set physical address */ +	fecp->palr = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3]; +	fecp->paur = (mac[4] << 24) + (mac[5] << 16) + 0x8808; + +	/* Clear multicast address hash table */ +	fecp->gaur = 0; +	fecp->galr = 0; +} + +static int fec_init(struct eth_device *dev, bd_t * bd) +{ +	struct fec_info_dma *info = dev->priv; +	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); +	int i; + +#ifdef ET_DEBUG +	printf("fec_init: iobase 0x%08x ...\n", info->iobase); +#endif + +	fecpin_setclear(dev, 1); + +	fec_halt(dev); + +#if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \ +	defined (CFG_DISCOVER_PHY) + +	mii_init(); + +	set_fec_duplex_speed(fecp, bd, info->dup_spd); +#else +#ifndef CFG_DISCOVER_PHY +	set_fec_duplex_speed(fecp, bd, (FECDUPLEX << 16) | FECSPEED); +#endif				/* ifndef CFG_DISCOVER_PHY */ +#endif				/* CONFIG_CMD_MII || CONFIG_MII */ + +	/* We use strictly polling mode only */ +	fecp->eimr = 0; + +	/* Clear any pending interrupt */ +	fecp->eir = 0xffffffff; + +	/* Set station address   */ +	if ((u32) fecp == CFG_FEC0_IOBASE) { +		fec_set_hwaddr(fecp, bd->bi_enetaddr); +	} else { +		fec_set_hwaddr(fecp, bd->bi_enet1addr); +	} + +	/* Set Opcode/Pause Duration Register */ +	fecp->opd = 0x00010020; + +	/* Setup Buffers and Buffer Desriptors */ +	info->rxIdx = 0; +	info->txIdx = 0; + +	/* Setup Receiver Buffer Descriptors (13.14.24.18) +	 * Settings:     Empty, Wrap */ +	for (i = 0; i < PKTBUFSRX; i++) { +		info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY; +		info->rxbd[i].cbd_datlen = PKTSIZE_ALIGN; +		info->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i]; +	} +	info->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 < CFG_TX_ETH_BUFFER; i++) { +		info->txbd[i].cbd_sc = 0; +		info->txbd[i].cbd_datlen = 0; +		info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]); +	} +	info->txbd[CFG_TX_ETH_BUFFER - 1].cbd_sc |= BD_ENET_TX_WRAP; + +	info->usedTbdIdx = 0; +	info->cleanTbdNum = CFG_TX_ETH_BUFFER; + +	/* Set Rx FIFO alarm and granularity value */ +	fecp->rfcr = 0x0c000000; +	fecp->rfar = 0x0000030c; + +	/* Set Tx FIFO granularity value */ +	fecp->tfcr = FIFO_CTRL_FRAME | FIFO_CTRL_GR(6) | 0x00040000; +	fecp->tfar = 0x00000080; + +	fecp->tfwr = 0x2; +	fecp->ctcwr = 0x03000000; + +	/* Enable DMA receive task */ +	MCD_startDma(info->rxTask,	/* Dma channel */ +		     (s8 *) info->rxbd,	/*Source Address */ +		     0,		/* Source increment */ +		     (s8 *) (&fecp->rfdr),	/* dest */ +		     4,		/* dest increment */ +		     0,		/* DMA size */ +		     4,		/* xfer size */ +		     info->rxInit,	/* initiator */ +		     info->rxPri,	/* priority */ +		     (MCD_FECRX_DMA | MCD_TT_FLAGS_DEF),	/* Flags */ +		     (MCD_NO_CSUM | MCD_NO_BYTE_SWAP)	/* Function description */ +	    ); + +	/* Enable DMA tx task with no ready buffer descriptors */ +	MCD_startDma(info->txTask,	/* Dma channel */ +		     (s8 *) info->txbd,	/*Source Address */ +		     0,		/* Source increment */ +		     (s8 *) (&fecp->tfdr),	/* dest */ +		     4,		/* dest incr */ +		     0,		/* DMA size */ +		     4,		/* xfer size */ +		     info->txInit,	/* initiator */ +		     info->txPri,	/* priority */ +		     (MCD_FECTX_DMA | MCD_TT_FLAGS_DEF),	/* Flags */ +		     (MCD_NO_CSUM | MCD_NO_BYTE_SWAP)	/* Function description */ +	    ); + +	/* Now enable the transmit and receive processing */ +	fecp->ecr |= FEC_ECR_ETHER_EN; + +	return 1; +} + +static void fec_halt(struct eth_device *dev) +{ +	struct fec_info_dma *info = dev->priv; +	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); +	int counter = 0xffff; + +	/* issue graceful stop command to the FEC transmitter if necessary */ +	fecp->tcr |= FEC_TCR_GTS; + +	/* wait for graceful stop to register */ +	while ((counter--) && (!(fecp->eir & FEC_EIR_GRA))) ; + +	/* Disable DMA tasks */ +	MCD_killDma(info->txTask); +	MCD_killDma(info->rxTask);; + +	/* Disable the Ethernet Controller */ +	fecp->ecr &= ~FEC_ECR_ETHER_EN; + +	/* Clear FIFO status registers */ +	fecp->rfsr &= FIFO_ERRSTAT; +	fecp->tfsr &= FIFO_ERRSTAT; + +	fecp->frst = 0x01000000; + +	/* Issue a reset command to the FEC chip */ +	fecp->ecr |= FEC_ECR_RESET; + +	/* wait at least 20 clock cycles */ +	udelay(10000); + +#ifdef ET_DEBUG +	printf("Ethernet task stopped\n"); +#endif +} + +int mcdmafec_initialize(bd_t * bis) +{ +	struct eth_device *dev; +	int i; + +	for (i = 0; i < sizeof(fec_info) / sizeof(fec_info[0]); i++) { + +		dev = +		    (struct eth_device *)memalign(CFG_CACHELINE_SIZE, +						  sizeof *dev); +		if (dev == NULL) +			hang(); + +		memset(dev, 0, sizeof(*dev)); + +		sprintf(dev->name, "FEC%d", fec_info[i].index); + +		dev->priv = &fec_info[i]; +		dev->init = fec_init; +		dev->halt = fec_halt; +		dev->send = fec_send; +		dev->recv = fec_recv; + +		/* setup Receive and Transmit buffer descriptor */ +		fec_info[i].rxbd = +		    (cbd_t *) memalign(CFG_CACHELINE_SIZE, +				       (PKTBUFSRX * sizeof(cbd_t))); +		fec_info[i].txbd = +		    (cbd_t *) memalign(CFG_CACHELINE_SIZE, +				       (CFG_TX_ETH_BUFFER * sizeof(cbd_t))); +		fec_info[i].txbuf = +		    (char *)memalign(CFG_CACHELINE_SIZE, DBUF_LENGTH); + +#ifdef ET_DEBUG +		printf("rxbd %x txbd %x\n", +		       (int)fec_info[i].rxbd, (int)fec_info[i].txbd); +#endif + +		fec_info[i].phy_name = (char *)memalign(CFG_CACHELINE_SIZE, 32); + +		eth_register(dev); + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) +		miiphy_register(dev->name, +				mcffec_miiphy_read, mcffec_miiphy_write); +#endif + +		if (i > 0) +			fec_info[i - 1].next = &fec_info[i]; +	} +	fec_info[i - 1].next = &fec_info[0]; + +	/* default speed */ +	bis->bi_ethspeed = 10; + +	return 1; +} + +#endif				/* CONFIG_CMD_NET && CONFIG_NET_MULTI */ +#endif				/* CONFIG_FSLDMAFEC */ |