diff options
Diffstat (limited to 'drivers/net/arm/ether00.c')
| -rw-r--r-- | drivers/net/arm/ether00.c | 1017 |
1 files changed, 1017 insertions, 0 deletions
diff --git a/drivers/net/arm/ether00.c b/drivers/net/arm/ether00.c new file mode 100644 index 00000000000..4f1f4e31bda --- /dev/null +++ b/drivers/net/arm/ether00.c @@ -0,0 +1,1017 @@ +/* + * drivers/net/ether00.c + * + * Copyright (C) 2001 Altera Corporation + * + * 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 + */ + +/* includes */ +#include <linux/config.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <linux/tqueue.h> +#include <linux/mtd/mtd.h> +#include <linux/pld/pld_hotswap.h> +#include <asm/arch/excalibur.h> +#include <asm/arch/hardware.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/sizes.h> + +#include <asm/arch/ether00.h> +#include <asm/arch/tdkphy.h> + + +MODULE_AUTHOR("Clive Davies"); +MODULE_DESCRIPTION("Altera Ether00 IP core driver"); +MODULE_LICENSE("GPL"); + +#define PKT_BUF_SZ 1540 /* Size of each rx buffer */ +#define ETH_NR 4 /* Number of MACs this driver supports */ + +#define DEBUG(x) + +#define __dma_va(x) (unsigned int)((unsigned int)priv->dma_data+(((unsigned int)(x))&(EXC_SPSRAM_BLOCK0_SIZE-1))) +#define __dma_pa(x) (unsigned int)(EXC_SPSRAM_BLOCK0_BASE+(((unsigned int)(x))-(unsigned int)priv->dma_data)) + +#define ETHER00_BASE 0 +#define ETHER00_TYPE +#define ETHER00_NAME "ether00" +#define MAC_REG_SIZE 0x400 /* size of MAC register area */ + + + +/* typedefs */ + +/* The definition of the driver control structure */ + +#define RX_NUM_BUFF 10 +#define RX_NUM_FDESC 10 +#define TX_NUM_FDESC 10 + +struct tx_fda_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct rx_fda_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct rx_blist_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct net_priv +{ + struct net_device_stats stats; + struct sk_buff* skb; + void* dma_data; + struct rx_blist_ent* rx_blist_vp; + struct rx_fda_ent* rx_fda_ptr; + struct tx_fda_ent* tx_fdalist_vp; + struct tq_struct tq_memupdate; + unsigned char memupdate_scheduled; + unsigned char rx_disabled; + unsigned char queue_stopped; + spinlock_t rx_lock; +}; + +static const char vendor_id[2]={0x07,0xed}; + +#ifdef ETHER00_DEBUG + +/* Dump (most) registers for debugging puposes */ + +static void dump_regs(struct net_device *dev){ + struct net_priv* priv=dev->priv; + unsigned int* i; + + printk("\n RX free descriptor area:\n"); + + for(i=(unsigned int*)priv->rx_fda_ptr; + i<((unsigned int*)(priv->rx_fda_ptr+RX_NUM_FDESC));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\n RX buffer list:\n"); + + for(i=(unsigned int*)priv->rx_blist_vp; + i<((unsigned int*)(priv->rx_blist_vp+RX_NUM_BUFF));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\n TX frame descriptor list:\n"); + + for(i=(unsigned int*)priv->tx_fdalist_vp; + i<((unsigned int*)(priv->tx_fdalist_vp+TX_NUM_FDESC));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\ndma ctl=%#x\n",readw(ETHER_DMA_CTL(dev->base_addr))); + printk("txfrmptr=%#x\n",readw(ETHER_TXFRMPTR(dev->base_addr))); + printk("txthrsh=%#x\n",readw(ETHER_TXTHRSH(dev->base_addr))); + printk("txpollctr=%#x\n",readw(ETHER_TXPOLLCTR(dev->base_addr))); + printk("blfrmptr=%#x\n",readw(ETHER_BLFRMPTR(dev->base_addr))); + printk("rxfragsize=%#x\n",readw(ETHER_RXFRAGSIZE(dev->base_addr))); + printk("tx_int_en=%#x\n",readw(ETHER_INT_EN(dev->base_addr))); + printk("fda_bas=%#x\n",readw(ETHER_FDA_BAS(dev->base_addr))); + printk("fda_lim=%#x\n",readw(ETHER_FDA_LIM(dev->base_addr))); + printk("int_src=%#x\n",readw(ETHER_INT_SRC(dev->base_addr))); + printk("pausecnt=%#x\n",readw(ETHER_PAUSECNT(dev->base_addr))); + printk("rempaucnt=%#x\n",readw(ETHER_REMPAUCNT(dev->base_addr))); + printk("txconfrmstat=%#x\n",readw(ETHER_TXCONFRMSTAT(dev->base_addr))); + printk("mac_ctl=%#x\n",readw(ETHER_MAC_CTL(dev->base_addr))); + printk("arc_ctl=%#x\n",readw(ETHER_ARC_CTL(dev->base_addr))); + printk("tx_ctl=%#x\n",readw(ETHER_TX_CTL(dev->base_addr))); +} +#endif /* ETHER00_DEBUG */ + + +static int ether00_write_phy(struct net_device *dev, short address, short value) +{ + volatile int count = 1024; + writew(value,ETHER_MD_DATA(dev->base_addr)); + writew( ETHER_MD_CA_BUSY_MSK | + ETHER_MD_CA_WR_MSK | + (address & ETHER_MD_CA_ADDR_MSK), + ETHER_MD_CA(dev->base_addr)); + + /* Wait for the command to complete */ + while((readw(ETHER_MD_CA(dev->base_addr)) & ETHER_MD_CA_BUSY_MSK)&&count){ + count--; + } + if (!count){ + printk("Write to phy failed, addr=%#x, data=%#x\n",address, value); + return -EIO; + } + return 0; +} + +static int ether00_read_phy(struct net_device *dev, short address) +{ + volatile int count = 1024; + writew( ETHER_MD_CA_BUSY_MSK | + (address & ETHER_MD_CA_ADDR_MSK), + ETHER_MD_CA(dev->base_addr)); + + /* Wait for the command to complete */ + while((readw(ETHER_MD_CA(dev->base_addr)) & ETHER_MD_CA_BUSY_MSK)&&count){ + count--; + } + if (!count){ + printk(KERN_WARNING "Read from phy timed out\n"); + return -EIO; + } + return readw(ETHER_MD_DATA(dev->base_addr)); +} + +static void ether00_phy_int(int irq_num, void* dev_id, struct pt_regs* regs) +{ + struct net_device* dev=dev_id; + int irq_status; + + irq_status=ether00_read_phy(dev, PHY_IRQ_CONTROL); + + if(irq_status & PHY_IRQ_CONTROL_ANEG_COMP_INT_MSK){ + /* + * Autonegotiation complete on epxa10db. The mac doesn't + * twig if we're in full duplex so we need to check the + * phy status register and configure the mac accordingly + */ + if(ether00_read_phy(dev, PHY_STATUS)&(PHY_STATUS_10T_F_MSK|PHY_STATUS_100_X_F_MSK)){ + int tmp; + tmp=readl(ETHER_MAC_CTL(dev->base_addr)); + writel(tmp|ETHER_MAC_CTL_FULLDUP_MSK,ETHER_MAC_CTL(dev->base_addr)); + } + } + + if(irq_status&PHY_IRQ_CONTROL_LS_CHG_INT_MSK){ + + if(ether00_read_phy(dev, PHY_STATUS)& PHY_STATUS_LINK_MSK){ + /* Link is up */ + netif_carrier_on(dev); + //printk("Carrier on\n"); + }else{ + netif_carrier_off(dev); + //printk("Carrier off\n"); + + } + } + +} + +static void setup_blist_entry(struct sk_buff* skb,struct rx_blist_ent* blist_ent_ptr){ + /* Make the buffer consistent with the cache as the mac is going to write + * directly into it*/ + blist_ent_ptr->fd.FDSystem=(unsigned int)skb; + blist_ent_ptr->bd.BuffData=(char*)__pa(skb->data); + consistent_sync(skb->data,PKT_BUF_SZ,PCI_DMA_FROMDEVICE); + /* align IP on 16 Byte (DMA_CTL set to skip 2 bytes) */ + skb_reserve(skb,2); + blist_ent_ptr->bd.BuffLength=PKT_BUF_SZ-2; + blist_ent_ptr->fd.FDLength=1; + blist_ent_ptr->fd.FDCtl=FDCTL_COWNSFD_MSK; + blist_ent_ptr->bd.BDCtl=BDCTL_COWNSBD_MSK; +} + + +static int ether00_mem_init(struct net_device* dev) +{ + struct net_priv* priv=dev->priv; + struct tx_fda_ent *tx_fd_ptr,*tx_end_ptr; + struct rx_blist_ent* blist_ent_ptr; + int i; + + /* + * Grab a block of on chip SRAM to contain the control stuctures for + * the ethernet MAC. This uncached becuase it needs to be accesses by both + * bus masters (cpu + mac). However, it shouldn't matter too much in terms + * of speed as its on chip memory + */ + priv->dma_data=ioremap_nocache(EXC_SPSRAM_BLOCK0_BASE,EXC_SPSRAM_BLOCK0_SIZE ); + if (!priv->dma_data) + return -ENOMEM; + + priv->rx_fda_ptr=(struct rx_fda_ent*)priv->dma_data; + /* + * Now share it out amongst the Frame descriptors and the buffer list + */ + priv->rx_blist_vp=(struct rx_blist_ent*)((unsigned int)priv->dma_data+RX_NUM_FDESC*sizeof(struct rx_fda_ent)); + + /* + *Initalise the FDA list + */ + /* set ownership to the controller */ + memset(priv->rx_fda_ptr,0x80,RX_NUM_FDESC*sizeof(struct rx_fda_ent)); + + /* + *Initialise the buffer list + */ + blist_ent_ptr=priv->rx_blist_vp; + i=0; + while(blist_ent_ptr<(priv->rx_blist_vp+RX_NUM_BUFF)){ + struct sk_buff *skb; + blist_ent_ptr->fd.FDLength=1; + skb=dev_alloc_skb(PKT_BUF_SZ); + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + blist_ent_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(blist_ent_ptr+1); + blist_ent_ptr->bd.BDStat=i++; + blist_ent_ptr++; + } + else + { + printk("Failed to initalise buffer list\n"); + } + + } + blist_ent_ptr--; + blist_ent_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(priv->rx_blist_vp); + + priv->tx_fdalist_vp=(struct tx_fda_ent*)(priv->rx_blist_vp+RX_NUM_BUFF); + + /* Initialise the buffers to be a circular list. The mac will then go poll + * the list until it finds a frame ready to transmit */ + tx_end_ptr=priv->tx_fdalist_vp+TX_NUM_FDESC; + for(tx_fd_ptr=priv->tx_fdalist_vp;tx_fd_ptr<tx_end_ptr;tx_fd_ptr++){ + tx_fd_ptr->fd.FDNext=(FDA_DESC*)__dma_pa((tx_fd_ptr+1)); + tx_fd_ptr->fd.FDCtl=1; + tx_fd_ptr->fd.FDStat=0; + tx_fd_ptr->fd.FDLength=1; + + } + /* Change the last FDNext pointer to make a circular list */ + tx_fd_ptr--; + tx_fd_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(priv->tx_fdalist_vp); + + /* Point the device at the chain of Rx and Tx Buffers */ + writel((unsigned int)__dma_pa(priv->rx_fda_ptr),ETHER_FDA_BAS(dev->base_addr)); + writel((RX_NUM_FDESC-1)*sizeof(struct rx_fda_ent),ETHER_FDA_LIM(dev->base_addr)); + writel((unsigned int)__dma_pa(priv->rx_blist_vp),ETHER_BLFRMPTR(dev->base_addr)); + + writel((unsigned int)__dma_pa(priv->tx_fdalist_vp),ETHER_TXFRMPTR(dev->base_addr)); + + return 0; +} + + +void ether00_mem_update(void* dev_id) +{ + struct net_device* dev=dev_id; + struct net_priv* priv=dev->priv; + struct sk_buff* skb; + struct tx_fda_ent *fda_ptr=priv->tx_fdalist_vp; + struct rx_blist_ent* blist_ent_ptr; + unsigned long flags; + + priv->tq_memupdate.sync=0; + //priv->tq_memupdate.list= + priv->memupdate_scheduled=0; + + /* Transmit interrupt */ + while(fda_ptr<(priv->tx_fdalist_vp+TX_NUM_FDESC)){ + if(!(FDCTL_COWNSFD_MSK&fda_ptr->fd.FDCtl) && (ETHER_TX_STAT_COMP_MSK&fda_ptr->fd.FDStat)){ + priv->stats.tx_packets++; + priv->stats.tx_bytes+=fda_ptr->bd.BuffLength; + skb=(struct sk_buff*)fda_ptr->fd.FDSystem; + //printk("%d:txcln:fda=%#x skb=%#x\n",jiffies,fda_ptr,skb); + dev_kfree_skb(skb); + fda_ptr->fd.FDSystem=0; + fda_ptr->fd.FDStat=0; + fda_ptr->fd.FDCtl=0; + } + fda_ptr++; + } + /* Fill in any missing buffers from the received queue */ + spin_lock_irqsave(&priv->rx_lock,flags); + blist_ent_ptr=priv->rx_blist_vp; + while(blist_ent_ptr<(priv->rx_blist_vp+RX_NUM_BUFF)){ + /* fd.FDSystem of 0 indicates we failed to allocate the buffer in the ISR */ + if(!blist_ent_ptr->fd.FDSystem){ + struct sk_buff *skb; + skb=dev_alloc_skb(PKT_BUF_SZ); + blist_ent_ptr->fd.FDSystem=(unsigned int)skb; + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + } + else + { + break; + } + } + blist_ent_ptr++; + } + spin_unlock_irqrestore(&priv->rx_lock,flags); + if(priv->queue_stopped){ + //printk("%d:cln:start q\n",jiffies); + netif_start_queue(dev); + } + if(priv->rx_disabled){ + //printk("%d:enable_irq\n",jiffies); + priv->rx_disabled=0; + writel(ETHER_RX_CTL_RXEN_MSK,ETHER_RX_CTL(dev->base_addr)); + + } +} + + +static void ether00_int( int irq_num, void* dev_id, struct pt_regs* regs) +{ + struct net_device* dev=dev_id; + struct net_priv* priv=dev->priv; + + unsigned int interruptValue; + + interruptValue=readl(ETHER_INT_SRC(dev->base_addr)); + + //printk("INT_SRC=%x\n",interruptValue); + + if(!(readl(ETHER_INT_SRC(dev->base_addr)) & ETHER_INT_SRC_IRQ_MSK)) + { + return; /* Interrupt wasn't caused by us!! */ + } + + if(readl(ETHER_INT_SRC(dev->base_addr))& + (ETHER_INT_SRC_INTMACRX_MSK | + ETHER_INT_SRC_FDAEX_MSK | + ETHER_INT_SRC_BLEX_MSK)) { + struct rx_blist_ent* blist_ent_ptr; + struct rx_fda_ent* fda_ent_ptr; + struct sk_buff* skb; + + fda_ent_ptr=priv->rx_fda_ptr; + spin_lock(&priv->rx_lock); + while(fda_ent_ptr<(priv->rx_fda_ptr+RX_NUM_FDESC)){ + int result; + + if(!(fda_ent_ptr->fd.FDCtl&FDCTL_COWNSFD_MSK)) + { + /* This frame is ready for processing */ + /*find the corresponding buffer in the bufferlist */ + blist_ent_ptr=priv->rx_blist_vp+fda_ent_ptr->bd.BDStat; + skb=(struct sk_buff*)blist_ent_ptr->fd.FDSystem; + + /* Pass this skb up the stack */ + skb->dev=dev; + skb_put(skb,fda_ent_ptr->fd.FDLength); + skb->protocol=eth_type_trans(skb,dev); + skb->ip_summed=CHECKSUM_UNNECESSARY; + result=netif_rx(skb); + /* Update statistics */ + priv->stats.rx_packets++; + priv->stats.rx_bytes+=fda_ent_ptr->fd.FDLength; + + /* Free the FDA entry */ + fda_ent_ptr->bd.BDStat=0xff; + fda_ent_ptr->fd.FDCtl=FDCTL_COWNSFD_MSK; + + /* Allocate a new skb and point the bd entry to it */ + blist_ent_ptr->fd.FDSystem=0; + skb=dev_alloc_skb(PKT_BUF_SZ); + //printk("allocskb=%#x\n",skb); + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + + } + else if(!priv->memupdate_scheduled){ + int tmp; + /* There are no buffers at the moment, so schedule */ + /* the background task to sort this out */ + schedule_task(&priv->tq_memupdate); + priv->memupdate_scheduled=1; + printk(KERN_DEBUG "%s:No buffers",dev->name); + /* If this interrupt was due to a lack of buffers then + * we'd better stop the receiver too */ + if(interruptValueÐER_INT_SRC_BLEX_MSK){ + priv->rx_disabled=1; + tmp=readl(ETHER_INT_SRC(dev->base_addr)); + writel(tmp&~ETHER_RX_CTL_RXEN_MSK,ETHER_RX_CTL(dev->base_addr)); + printk(KERN_DEBUG "%s:Halting rx",dev->name); + } + + } + + } + fda_ent_ptr++; + } + spin_unlock(&priv->rx_lock); + + /* Clear the interrupts */ + writel(ETHER_INT_SRC_INTMACRX_MSK | ETHER_INT_SRC_FDAEX_MSK + | ETHER_INT_SRC_BLEX_MSK,ETHER_INT_SRC(dev->base_addr)); + + } + + if(readl(ETHER_INT_SRC(dev->base_addr))ÐER_INT_SRC_INTMACTX_MSK){ + + if(!priv->memupdate_scheduled){ + schedule_task(&priv->tq_memupdate); + priv->memupdate_scheduled=1; + } + /* Clear the interrupt */ + writel(ETHER_INT_SRC_INTMACTX_MSK,ETHER_INT_SRC(dev->base_addr)); + } + + if (readl(ETHER_INT_SRC(dev->base_addr)) & (ETHER_INT_SRC_SWINT_MSK| + ETHER_INT_SRC_INTEARNOT_MSK| + ETHER_INT_SRC_INTLINK_MSK| + ETHER_INT_SRC_INTEXBD_MSK| + ETHER_INT_SRC_INTTXCTLCMP_MSK)) + { + /* + * Not using any of these so they shouldn't happen + * + * In the cased of INTEXBD - if you allocate more + * than 28 decsriptors you may need to think about this + */ + printk("Not using this interrupt\n"); + } + + if (readl(ETHER_INT_SRC(dev->base_addr)) & + (ETHER_INT_SRC_INTSBUS_MSK | + ETHER_INT_SRC_INTNRABT_MSK + |ETHER_INT_SRC_DMPARERR_MSK)) + { + /* + * Hardware errors, we can either ignore them and hope they go away + *or reset the device, I'll try the first for now to see if they happen + */ + printk("Hardware error\n"); + } +} + +static void ether00_setup_ethernet_address(struct net_device* dev) +{ + int tmp; + + dev->addr_len=6; + writew(0,ETHER_ARC_ADR(dev->base_addr)); + writel((dev->dev_addr[0]<<24) | + (dev->dev_addr[1]<<16) | + (dev->dev_addr[2]<<8) | + dev->dev_addr[3], + ETHER_ARC_DATA(dev->base_addr)); + + writew(4,ETHER_ARC_ADR(dev->base_addr)); + tmp=readl(ETHER_ARC_DATA(dev->base_addr)); + tmp&=0xffff; + tmp|=(dev->dev_addr[4]<<24) | (dev->dev_addr[5]<<16); + writel(tmp, ETHER_ARC_DATA(dev->base_addr)); + /* Enable this entry in the ARC */ + + writel(1,ETHER_ARC_ENA(dev->base_addr)); + + return; +} + + +static void ether00_reset(struct net_device *dev) +{ + /* reset the controller */ + writew(ETHER_MAC_CTL_RESET_MSK,ETHER_MAC_CTL(dev->base_addr)); + + /* + * Make sure we're not going to send anything + */ + + writew(ETHER_TX_CTL_TXHALT_MSK,ETHER_TX_CTL(dev->base_addr)); + + /* + * Make sure we're not going to receive anything + */ + writew(ETHER_RX_CTL_RXHALT_MSK,ETHER_RX_CTL(dev->base_addr)); + + /* + * Disable Interrupts for now, and set the burst size to 8 bytes + */ + + writel(ETHER_DMA_CTL_INTMASK_MSK | + ((8 << ETHER_DMA_CTL_DMBURST_OFST) & ETHER_DMA_CTL_DMBURST_MSK) + |(2<<ETHER_DMA_CTL_RXALIGN_OFST), + ETHER_DMA_CTL(dev->base_addr)); + + + /* + * Set TxThrsh - start transmitting a packet after 1514 + * bytes or when a packet is complete, whichever comes first + */ + writew(1514,ETHER_TXTHRSH(dev->base_addr)); + + /* + * Set TxPollCtr. Each cycle is + * 61.44 microseconds with a 33 MHz bus + */ + writew(1,ETHER_TXPOLLCTR(dev->base_addr)); + + /* + * Set Rx_Ctl - Turn off reception and let RxData turn it + * on later + */ + writew(ETHER_RX_CTL_RXHALT_MSK,ETHER_RX_CTL(dev->base_addr)); + +} + + +static void ether00_set_multicast(struct net_device* dev) +{ + int count=dev->mc_count; + + /* Set promiscuous mode if it's asked for. */ + + if (dev->flags&IFF_PROMISC){ + + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_BROADACC_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_STATIONACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + + /* + * Get all multicast packets if required, or if there are too + * many addresses to fit in hardware + */ + if (dev->flags & IFF_ALLMULTI){ + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_BROADACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + if (dev->mc_count > (ETHER_ARC_SIZE - 1)){ + + printk(KERN_WARNING "Too many multicast addresses for hardware to filter - receiving all multicast packets\n"); + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_BROADACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + + if(dev->mc_count){ + struct dev_mc_list *mc_list_ent=dev->mc_list; + unsigned int temp,i; + DEBUG(printk("mc_count=%d mc_list=%#x\n",dev-> mc_count, dev->mc_list)); + DEBUG(printk("mc addr=%02#x%02x%02x%02x%02x%02x\n", + mc_list_ent->dmi_addr[5], + mc_list_ent->dmi_addr[4], + mc_list_ent->dmi_addr[3], + mc_list_ent->dmi_addr[2], + mc_list_ent->dmi_addr[1], + mc_list_ent->dmi_addr[0]);) + + /* + * The first 6 bytes are the MAC address, so + * don't change them! + */ + writew(4,ETHER_ARC_ADR(dev->base_addr)); + temp=readl(ETHER_ARC_DATA(dev->base_addr)); + temp&=0xffff0000; + + /* Disable the current multicast stuff */ + writel(1,ETHER_ARC_ENA(dev->base_addr)); + + for(;;){ + temp|=mc_list_ent->dmi_addr[1] | + mc_list_ent->dmi_addr[0]<<8; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writew(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[5]| + mc_list_ent->dmi_addr[4]<<8 | + mc_list_ent->dmi_addr[3]<<16 | + mc_list_ent->dmi_addr[2]<<24; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + count--; + if(!mc_list_ent->next || !count){ + break; + } + DEBUG(printk("mc_list_next=%#x\n",mc_list_ent->next);) + mc_list_ent=mc_list_ent->next; + + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writel(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[3]| + mc_list_ent->dmi_addr[2]<<8 | + mc_list_ent->dmi_addr[1]<<16 | + mc_list_ent->dmi_addr[0]<<24; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writel(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[4]<<16 | + mc_list_ent->dmi_addr[5]<<24; + + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + count--; + if(!mc_list_ent->next || !count){ + break; + } + mc_list_ent=mc_list_ent->next; + } + + + if(count) + printk(KERN_WARNING "Multicast list size error\n"); + + + writew( ETHER_ARC_CTL_BROADACC_MSK| + ETHER_ARC_CTL_COMPEN_MSK, + ETHER_ARC_CTL(dev->base_addr)); + + } + + /* enable the active ARC enties */ + writew((1<<(count+2))-1,ETHER_ARC_ENA(dev->base_addr)); +} + + +static int ether00_open(struct net_device* dev) +{ + int result,tmp; + struct net_priv* priv; + + if (!is_valid_ether_addr(dev->dev_addr)) + return -EINVAL; + + /* Install interrupt handlers */ + result=request_irq(dev->irq,ether00_int,0,"ether00",dev); + if(result) + goto open_err1; + + result=request_irq(2,ether00_phy_int,0,"ether00_phy",dev); + if(result) + goto open_err2; + + ether00_reset(dev); + result=ether00_mem_init(dev); + if(result) + goto open_err3; + + + ether00_setup_ethernet_address(dev); + + ether00_set_multicast(dev); + + result=ether00_write_phy(dev,PHY_CONTROL, PHY_CONTROL_ANEGEN_MSK | PHY_CONTROL_RANEG_MSK); + if(result) + goto open_err4; + result=ether00_write_phy(dev,PHY_IRQ_CONTROL, PHY_IRQ_CONTROL_LS_CHG_IE_MSK | + PHY_IRQ_CONTROL_ANEG_COMP_IE_MSK); + if(result) + goto open_err4; + + /* Start the device enable interrupts */ + writew(ETHER_RX_CTL_RXEN_MSK +// | ETHER_RX_CTL_STRIPCRC_MSK + | ETHER_RX_CTL_ENGOOD_MSK + | ETHER_RX_CTL_ENRXPAR_MSK| ETHER_RX_CTL_ENLONGERR_MSK + | ETHER_RX_CTL_ENOVER_MSK| ETHER_RX_CTL_ENCRCERR_MSK, + ETHER_RX_CTL(dev->base_addr)); + + writew(ETHER_TX_CTL_TXEN_MSK| + ETHER_TX_CTL_ENEXDEFER_MSK| + ETHER_TX_CTL_ENLCARR_MSK| + ETHER_TX_CTL_ENEXCOLL_MSK| + ETHER_TX_CTL_ENLATECOLL_MSK| + ETHER_TX_CTL_ENTXPAR_MSK| + ETHER_TX_CTL_ENCOMP_MSK, + ETHER_TX_CTL(dev->base_addr)); + + tmp=readl(ETHER_DMA_CTL(dev->base_addr)); + writel(tmp&~ETHER_DMA_CTL_INTMASK_MSK,ETHER_DMA_CTL(dev->base_addr)); + + return 0; + + open_err4: + ether00_reset(dev); + open_err3: + free_irq(2,dev); + open_err2: + free_irq(dev->irq,dev); + open_err1: + return result; + +} + + +static int ether00_tx(struct sk_buff* skb, struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + struct tx_fda_ent *fda_ptr; + int i; + + + /* + * Find an empty slot in which to stick the frame + */ + fda_ptr=(struct tx_fda_ent*)__dma_va(readl(ETHER_TXFRMPTR(dev->base_addr))); + i=0; + while(i<TX_NUM_FDESC){ + if (fda_ptr->fd.FDStat||(fda_ptr->fd.FDCtl & FDCTL_COWNSFD_MSK)){ + fda_ptr =(struct tx_fda_ent*) __dma_va((struct tx_fda_ent*)fda_ptr->fd.FDNext); + } + else { + break; + } + i++; + } + + /* Write the skb data from the cache*/ + consistent_sync(skb->data,skb->len,PCI_DMA_TODEVICE); + fda_ptr->bd.BuffData=(char*)__pa(skb->data); + fda_ptr->bd.BuffLength=(unsigned short)skb->len; + /* Save the pointer to the skb for freeing later */ + fda_ptr->fd.FDSystem=(unsigned int)skb; + fda_ptr->fd.FDStat=0; + /* Pass ownership of the buffers to the controller */ + fda_ptr->fd.FDCtl=1; + fda_ptr->fd.FDCtl|=FDCTL_COWNSFD_MSK; + + /* If the next buffer in the list is full, stop the queue */ + fda_ptr=(struct tx_fda_ent*)__dma_va(fda_ptr->fd.FDNext); + if ((fda_ptr->fd.FDStat)||(fda_ptr->fd.FDCtl & FDCTL_COWNSFD_MSK)){ + netif_stop_queue(dev); + priv->queue_stopped=1; + } + + return 0; +} + +static struct net_device_stats *ether00_stats(struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + return &priv->stats; +} + + +static int ether00_stop(struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + int tmp; + + /* Stop/disable the device. */ + tmp=readw(ETHER_RX_CTL(dev->base_addr)); + tmp&=~(ETHER_RX_CTL_RXEN_MSK | ETHER_RX_CTL_ENGOOD_MSK); + tmp|=ETHER_RX_CTL_RXHALT_MSK; + writew(tmp,ETHER_RX_CTL(dev->base_addr)); + + tmp=readl(ETHER_TX_CTL(dev->base_addr)); + tmp&=~ETHER_TX_CTL_TXEN_MSK; + tmp|=ETHER_TX_CTL_TXHALT_MSK; + writel(tmp,ETHER_TX_CTL(dev->base_addr)); + + /* Free up system resources */ + free_irq(dev->irq,dev); + free_irq(2,dev); + iounmap(priv->dma_data); + + return 0; +} + + +static void ether00_get_ethernet_address(struct net_device* dev) +{ + struct mtd_info *mymtd=NULL; + int i; + size_t retlen; + + /* + * For the Epxa10 dev board (camelot), the ethernet MAC + * address is of the form 00:aa:aa:00:xx:xx where + * 00:aa:aa is the Altera vendor ID and xx:xx is the + * last 2 bytes of the board serial number, as programmed + * into the OTP area of the flash device on EBI1. If this + * isn't an expa10 dev board, or there's no mtd support to + * read the serial number from flash then we'll force the + * use to set their own mac address using ifconfig. + */ + +#ifdef CONFIG_ARCH_CAMELOT +#ifdef CONFIG_MTD + /* get the mtd_info structure for the first mtd device*/ + for(i=0;i<MAX_MTD_DEVICES;i++){ + mymtd=get_mtd_device(NULL,i); + if(!mymtd||!strcmp(mymtd->name,"EPXA10DB flash")) + break; + } + + if(!mymtd || !mymtd->read_user_prot_reg){ + printk(KERN_WARNING "%s: Failed to read MAC address from flash\n",dev->name); + }else{ + mymtd->read_user_prot_reg(mymtd,2,1,&retlen,&dev->dev_addr[5]); + mymtd->read_user_prot_reg(mymtd,3,1,&retlen,&dev->dev_addr[4]); + dev->dev_addr[3]=0; + dev->dev_addr[2]=vendor_id[1]; + dev->dev_addr[1]=vendor_id[0]; + dev->dev_addr[0]=0; + } +#else + printk(KERN_WARNING "%s: MTD support required to read MAC address from EPXA10 dev board\n", dev->name); +#endif +#endif + + if (!is_valid_ether_addr(dev->dev_addr)) + printk("%s: Invalid ethernet MAC address. Please set using " + "ifconfig\n", dev->name); + +} + +/* + * Keep a mapping of dev_info addresses -> port lines to use when + * removing ports dev==NULL indicates unused entry + */ + + +static struct net_device* dev_list[ETH_NR]; + +static int ether00_add_device(struct pldhs_dev_info* dev_info,void* dev_ps_data) +{ + struct net_device *dev; + struct net_priv *priv; + void *map_addr; + int result; + int i; + + i=0; + while(dev_list[i] && i < ETH_NR) + i++; + + if(i==ETH_NR){ + printk(KERN_WARNING "ether00: Maximum number of ports reached\n"); + return 0; + } + + + if (!request_mem_region(dev_info->base_addr, MAC_REG_SIZE, "ether00")) + return -EBUSY; + + dev = alloc_etherdev(sizeof(struct net_priv)); + if(!dev) { + result = -ENOMEM; + goto out_release; + } + priv = dev->priv; + + priv->tq_memupdate.routine=ether00_mem_update; + priv->tq_memupdate.data=(void*) dev; + + spin_lock_init(&priv->rx_lock); + + map_addr=ioremap_nocache(dev_info->base_addr,SZ_4K); + if(!map_addr){ + result = -ENOMEM; + out_kfree; + } + + dev->open=ether00_open; + dev->stop=ether00_stop; + dev->set_multicast_list=ether00_set_multicast; + dev->hard_start_xmit=ether00_tx; + dev->get_stats=ether00_stats; + + ether00_get_ethernet_address(dev); + + SET_MODULE_OWNER(dev); + + dev->base_addr=(unsigned int)map_addr; + dev->irq=dev_info->irq; + dev->features=NETIF_F_DYNALLOC | NETIF_F_HW_CSUM; + + result=register_netdev(dev); + if(result){ + printk("Ether00: Error %i registering driver\n",result); + goto out_unmap; + } + printk("registered ether00 device at %#x\n",dev_info->base_addr); + + dev_list[i]=dev; + + return result; + + out_unmap: + iounmap(map_addr); + out_kfree: + free_netdev(dev); + out_release: + release_mem_region(dev_info->base_addr, MAC_REG_SIZE); + return result; +} + + +static int ether00_remove_devices(void) +{ + int i; + + for(i=0;i<ETH_NR;i++){ + if(dev_list[i]){ + netif_device_detach(dev_list[i]); + unregister_netdev(dev_list[i]); + iounmap((void*)dev_list[i]->base_addr); + release_mem_region(dev_list[i]->base_addr, MAC_REG_SIZE); + free_netdev(dev_list[i]); + dev_list[i]=0; + } + } + return 0; +} + +static struct pld_hotswap_ops ether00_pldhs_ops={ + .name = ETHER00_NAME, + .add_device = ether00_add_device, + .remove_devices = ether00_remove_devices, +}; + + +static void __exit ether00_cleanup_module(void) +{ + int result; + result=ether00_remove_devices(); + if(result) + printk(KERN_WARNING "ether00: failed to remove all devices\n"); + + pldhs_unregister_driver(ETHER00_NAME); +} +module_exit(ether00_cleanup_module); + + +static int __init ether00_mod_init(void) +{ + printk("mod init\n"); + return pldhs_register_driver(ðer00_pldhs_ops); + +} + +module_init(ether00_mod_init); + |