diff options
Diffstat (limited to 'package/uboot-lantiq/files/drivers/net/ifx_etop.c')
| -rw-r--r-- | package/uboot-lantiq/files/drivers/net/ifx_etop.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/package/uboot-lantiq/files/drivers/net/ifx_etop.c b/package/uboot-lantiq/files/drivers/net/ifx_etop.c new file mode 100644 index 0000000..9a9e51f --- /dev/null +++ b/package/uboot-lantiq/files/drivers/net/ifx_etop.c @@ -0,0 +1,374 @@ +/* + * Lantiq CPE device ethernet driver. + * Supposed to work on Twinpass/Danube. + * + * Based on INCA-IP driver: + * (C) Copyright 2003-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2010 + * Thomas Langer, Ralph Hempel + * + * 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 <net.h> +#include <miiphy.h> +#include <asm/types.h> +#include <asm/io.h> +#include <asm/addrspace.h> + +#include "ifx_etop.h" + +#define TX_CHAN_NO 7 +#define RX_CHAN_NO 6 + +#define NUM_RX_DESC PKTBUFSRX +#define NUM_TX_DESC 8 +#define TOUT_LOOP 100 + +typedef struct +{ + union + { + struct + { + volatile u32 OWN :1; + volatile u32 C :1; + volatile u32 Sop :1; + volatile u32 Eop :1; + volatile u32 reserved :3; + volatile u32 Byteoffset :2; + volatile u32 reserve :7; + volatile u32 DataLen :16; + }field; + + volatile u32 word; + }status; + + volatile u32 DataPtr; +} dma_rx_descriptor_t; + +typedef struct +{ + union + { + struct + { + volatile u32 OWN :1; + volatile u32 C :1; + volatile u32 Sop :1; + volatile u32 Eop :1; + volatile u32 Byteoffset :5; + volatile u32 reserved :7; + volatile u32 DataLen :16; + }field; + + volatile u32 word; + }status; + + volatile u32 DataPtr; +} dma_tx_descriptor_t; + +static volatile dma_rx_descriptor_t rx_des_ring[NUM_RX_DESC] __attribute__ ((aligned(8))); +static volatile dma_tx_descriptor_t tx_des_ring[NUM_TX_DESC] __attribute__ ((aligned(8))); +static int tx_num, rx_num; + +static volatile IfxDMA_t *pDma = (IfxDMA_t *)CKSEG1ADDR(DANUBE_DMA_BASE); + +static int lq_eth_init(struct eth_device *dev, bd_t * bis); +static int lq_eth_send(struct eth_device *dev, volatile void *packet,int length); +static int lq_eth_recv(struct eth_device *dev); +static void lq_eth_halt(struct eth_device *dev); +static void lq_eth_init_chip(void); +static void lq_eth_init_dma(void); + +static int lq_eth_miiphy_read(char *devname, u8 phyAddr, u8 regAddr, u16 * retVal) +{ + u32 timeout = 50000; + u32 phy, reg; + + if ((phyAddr > 0x1F) || (regAddr > 0x1F) || (retVal == NULL)) + return -1; + + phy = (phyAddr & 0x1F) << 21; + reg = (regAddr & 0x1F) << 16; + + *ETOP_MDIO_ACC = 0xC0000000 | phy | reg; + while ((timeout--) && (*ETOP_MDIO_ACC & 0x80000000)) + udelay(10); + + if (timeout==0) { + *retVal = 0; + return -1; + } + *retVal = *ETOP_MDIO_ACC & 0xFFFF; + return 0; +} + +static int lq_eth_miiphy_write(char *devname, u8 phyAddr, u8 regAddr, u16 data) +{ + u32 timeout = 50000; + u32 phy, reg; + + if ((phyAddr > 0x1F) || (regAddr > 0x1F)) + return -1; + + phy = (phyAddr & 0x1F) << 21; + reg = (regAddr & 0x1F) << 16; + + *ETOP_MDIO_ACC = 0x80000000 | phy | reg | data; + while ((timeout--) && (*ETOP_MDIO_ACC & 0x80000000)) + udelay(10); + + if (timeout==0) + return -1; + return 0; +} + + +int lq_eth_initialize(bd_t * bis) +{ + struct eth_device *dev; + + debug("Entered lq_eth_initialize()\n"); + + if (!(dev = malloc (sizeof *dev))) { + printf("Failed to allocate memory\n"); + return -1; + } + memset(dev, 0, sizeof(*dev)); + + sprintf(dev->name, "lq_cpe_eth"); + dev->init = lq_eth_init; + dev->halt = lq_eth_halt; + dev->send = lq_eth_send; + dev->recv = lq_eth_recv; + + eth_register(dev); + +#if defined (CONFIG_MII) || defined(CONFIG_CMD_MII) + /* register mii command access routines */ + miiphy_register(dev->name, + lq_eth_miiphy_read, lq_eth_miiphy_write); +#endif + + lq_eth_init_dma(); + lq_eth_init_chip(); + + return 0; +} + +static int lq_eth_init(struct eth_device *dev, bd_t * bis) +{ + int i; + uchar *enetaddr = dev->enetaddr; + + debug("lq_eth_init %x:%x:%x:%x:%x:%x\n", + enetaddr[0], enetaddr[1], enetaddr[2], enetaddr[3], enetaddr[4], enetaddr[5]); + + *ENET_MAC_DA0 = (enetaddr[0]<<24) + (enetaddr[1]<<16) + (enetaddr[2]<< 8) + enetaddr[3]; + *ENET_MAC_DA1 = (enetaddr[4]<<24) + (enetaddr[5]<<16); + *ENETS_CFG |= 1<<28; /* enable filter for unicast packets */ + + tx_num=0; + rx_num=0; + + for(i=0;i < NUM_RX_DESC; i++) { + dma_rx_descriptor_t * rx_desc = (dma_rx_descriptor_t *)CKSEG1ADDR(&rx_des_ring[i]); + rx_desc->status.word=0; + rx_desc->status.field.OWN=1; + rx_desc->status.field.DataLen=PKTSIZE_ALIGN; /* 1536 */ + rx_desc->DataPtr=(u32)CKSEG1ADDR(NetRxPackets[i]); + NetRxPackets[i][0] = 0xAA; + } + + /* Reset DMA */ + dma_writel(dma_cs, RX_CHAN_NO); + dma_writel(dma_cctrl, 0x2);/*fix me, need to reset this channel first?*/ + dma_writel(dma_cpoll, 0x80000040); + /*set descriptor base*/ + dma_writel(dma_cdba, (u32)rx_des_ring); + dma_writel(dma_cdlen, NUM_RX_DESC); + dma_writel(dma_cie, 0); + dma_writel(dma_cctrl, 0x30000); + + for(i=0;i < NUM_TX_DESC; i++) { + dma_tx_descriptor_t * tx_desc = (dma_tx_descriptor_t *)CKSEG1ADDR(&tx_des_ring[i]); + memset(tx_desc, 0, sizeof(tx_des_ring[0])); + } + + dma_writel(dma_cs, TX_CHAN_NO); + dma_writel(dma_cctrl, 0x2);/*fix me, need to reset this channel first?*/ + dma_writel(dma_cpoll, 0x80000040); + dma_writel(dma_cdba, (u32)tx_des_ring); + dma_writel(dma_cdlen, NUM_TX_DESC); + dma_writel(dma_cie, 0); + dma_writel(dma_cctrl, 0x30100); + + /* turn on DMA rx & tx channel + */ + dma_writel(dma_cs, RX_CHAN_NO); + dma_writel(dma_cctrl, dma_readl(dma_cctrl) | 1); /*reset and turn on the channel*/ + + return 0; +} + +static void lq_eth_halt(struct eth_device *dev) +{ + int i; + + debug("lq_eth_halt()\n"); + + for(i=0;i<8;i++) { + dma_writel(dma_cs, i); + dma_writel(dma_cctrl, dma_readl(dma_cctrl) & ~1);/*stop the dma channel*/ + } +} + +static int lq_eth_send(struct eth_device *dev, volatile void *packet,int length) +{ + int i; + int res = -1; + volatile dma_tx_descriptor_t * tx_desc = (dma_tx_descriptor_t *)CKSEG1ADDR(&tx_des_ring[tx_num]); + + if (length <= 0) { + printf ("%s: bad packet size: %d\n", dev->name, length); + goto Done; + } + + for(i=0; tx_desc->status.field.OWN==1; i++) { + if (i>=TOUT_LOOP) { + printf("NO Tx Descriptor..."); + goto Done; + } + } + + tx_desc->status.field.Sop=1; + tx_desc->status.field.Eop=1; + tx_desc->status.field.C=0; + tx_desc->DataPtr = (u32)CKSEG1ADDR(packet); + if (length<60) + tx_desc->status.field.DataLen = 60; + else + tx_desc->status.field.DataLen = (u32)length; + + flush_cache((u32)packet, tx_desc->status.field.DataLen); + tx_desc->status.field.OWN=1; + + res=length; + tx_num++; + if (tx_num==NUM_TX_DESC) tx_num=0; + + dma_writel(dma_cs, TX_CHAN_NO); + if (!(dma_readl(dma_cctrl) & 1)) { + dma_writel(dma_cctrl, dma_readl(dma_cctrl) | 1); + } + +Done: + return res; +} + +static int lq_eth_recv(struct eth_device *dev) +{ + int length = 0; + volatile dma_rx_descriptor_t * rx_desc; + + rx_desc = (dma_rx_descriptor_t *)CKSEG1ADDR(&rx_des_ring[rx_num]); + + if ((rx_desc->status.field.C == 0) || (rx_desc->status.field.OWN == 1)) { + return 0; + } + length = rx_desc->status.field.DataLen; + if (length > 4) { + invalidate_dcache_range((u32)CKSEG0ADDR(rx_desc->DataPtr), (u32) CKSEG0ADDR(rx_desc->DataPtr) + length); + NetReceive(NetRxPackets[rx_num], length); + } else { + printf("ERROR: Invalid rx packet length.\n"); + } + + rx_desc->status.field.Sop=0; + rx_desc->status.field.Eop=0; + rx_desc->status.field.C=0; + rx_desc->status.field.DataLen=PKTSIZE_ALIGN; + rx_desc->status.field.OWN=1; + + rx_num++; + if (rx_num == NUM_RX_DESC) + rx_num=0; + + return length; +} + +static void lq_eth_init_chip(void) +{ + *ETOP_MDIO_CFG &= ~0x6; + *ENET_MAC_CFG = 0x187; + + // turn on port0, set to rmii and turn off port1. +#ifdef CONFIG_RMII + *ETOP_CFG = (*ETOP_CFG & 0xFFFFFFFC) | 0x0000000A; +#else + *ETOP_CFG = (*ETOP_CFG & 0xFFFFFFFC) | 0x00000008; +#endif + + *ETOP_IG_PLEN_CTRL = 0x004005EE; // set packetlen. + *ENET_MAC_CFG |= 1<<11; /*enable the crc*/ + return; +} + +static void lq_eth_init_dma(void) +{ + /* Reset DMA */ + dma_writel(dma_ctrl, dma_readl(dma_ctrl) | 1); + dma_writel(dma_irnen, 0);/*disable all the interrupts first*/ + + /* Clear Interrupt Status Register */ + dma_writel(dma_irncr, 0xfffff); + /*disable all the dma interrupts*/ + dma_writel(dma_irnen, 0); + /*disable channel 0 and channel 1 interrupts*/ + + dma_writel(dma_cs, RX_CHAN_NO); + dma_writel(dma_cctrl, 0x2);/*fix me, need to reset this channel first?*/ + dma_writel(dma_cpoll, 0x80000040); + /*set descriptor base*/ + dma_writel(dma_cdba, (u32)rx_des_ring); + dma_writel(dma_cdlen, NUM_RX_DESC); + dma_writel(dma_cie, 0); + dma_writel(dma_cctrl, 0x30000); + + dma_writel(dma_cs, TX_CHAN_NO); + dma_writel(dma_cctrl, 0x2);/*fix me, need to reset this channel first?*/ + dma_writel(dma_cpoll, 0x80000040); + dma_writel(dma_cdba, (u32)tx_des_ring); + dma_writel(dma_cdlen, NUM_TX_DESC); + dma_writel(dma_cie, 0); + dma_writel(dma_cctrl, 0x30100); + /*enable the poll function and set the poll counter*/ + //dma_writel(DMA_CPOLL=DANUBE_DMA_POLL_EN | (DANUBE_DMA_POLL_COUNT<<4); + /*set port properties, enable endian conversion for switch*/ + dma_writel(dma_ps, 0); + dma_writel(dma_pctrl, dma_readl(dma_pctrl) | (0xf<<8));/*enable 32 bit endian conversion*/ + + return; +} |