diff options
Diffstat (limited to 'i386/i386at/gpl/linux/net/ni65.c')
| -rw-r--r-- | i386/i386at/gpl/linux/net/ni65.c | 648 |
1 files changed, 0 insertions, 648 deletions
diff --git a/i386/i386at/gpl/linux/net/ni65.c b/i386/i386at/gpl/linux/net/ni65.c deleted file mode 100644 index 44a5811..0000000 --- a/i386/i386at/gpl/linux/net/ni65.c +++ /dev/null @@ -1,648 +0,0 @@ -/* - * ni6510 (am7990 'lance' chip) driver for Linux-net-3 by MH - * Alphacode v0.33 (94/08/22) for 1.1.47 (or later) - * - * ---------------------------------------------------------- - * WARNING: DOESN'T WORK ON MACHINES WITH MORE THAN 16MB !!!! - * ---------------------------------------------------------- - * - * copyright (c) 1994 M.Hipp - * - * This is an extension to the Linux operating system, and is covered by the - * same Gnu Public License that covers the Linux-kernel. - * - * comments/bugs/suggestions can be sent to: - * Michael Hipp - * email: mhipp@student.uni-tuebingen.de - * - * sources: - * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' - * and from the original drivers by D.Becker - */ - -/* - * Nov.18: multicast tweaked (AC). - * - * Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) - * - * July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) - */ - -/* - * known BUGS: 16MB limit - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/malloc.h> -#include <linux/interrupt.h> -#include <asm/bitops.h> -#include <asm/io.h> -#include <asm/dma.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> - -#include "ni65.h" - -/************************************ - * skeleton-stuff - */ - -#ifndef HAVE_PORTRESERVE -#define check_region(ioaddr, size) 0 -#define request_region(ioaddr, size,name) do ; while (0) -#endif - -#ifndef NET_DEBUG -#define NET_DEBUG 2 -#endif -/* -static unsigned int net_debug = NET_DEBUG; -*/ - -#define NI65_TOTAL_SIZE 16 - -#define SA_ADDR0 0x02 -#define SA_ADDR1 0x07 -#define SA_ADDR2 0x01 -#define CARD_ID0 0x00 -#define CARD_ID1 0x55 - -/*****************************************/ - -#define PORT dev->base_addr - -#define RMDNUM 8 -#define RMDNUMMASK 0x6000 /* log2(RMDNUM)<<13 */ -#define TMDNUM 4 -#define TMDNUMMASK 0x4000 /* log2(TMDNUM)<<13 */ - -#define R_BUF_SIZE 1518 -#define T_BUF_SIZE 1518 - -#define MEMSIZE 8+RMDNUM*8+TMDNUM*8 - -#define L_DATAREG 0x00 -#define L_ADDRREG 0x02 - -#define L_RESET 0x04 -#define L_CONFIG 0x05 -#define L_EBASE 0x08 - -/* - * to access the am7990-regs, you have to write - * reg-number into L_ADDRREG, then you can access it using L_DATAREG - */ -#define CSR0 0x00 -#define CSR1 0x01 -#define CSR2 0x02 -#define CSR3 0x03 - -/* if you #define NO_STATIC the driver is faster but you will have (more) problems with >16MB memory */ -#undef NO_STATIC - -#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ - outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} -#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ - inw(PORT+L_DATAREG)) -#define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} - -static int ni65_probe1(struct device *dev,int); -static void ni65_interrupt(int irq, struct pt_regs *regs); - static void recv_intr(struct device *dev); - static void xmit_intr(struct device *dev); -static int ni65_open(struct device *dev); - static int am7990_reinit(struct device *dev); -static int ni65_send_packet(struct sk_buff *skb, struct device *dev); -static int ni65_close(struct device *dev); -static struct enet_statistics *ni65_get_stats(struct device *); - -static void set_multicast_list(struct device *dev); - -struct priv -{ - struct init_block ib; - void *memptr; - struct rmd *rmdhead; - struct tmd *tmdhead; - int rmdnum; - int tmdnum,tmdlast; - struct sk_buff *recv_skb[RMDNUM]; - void *tmdbufs[TMDNUM]; - int lock,xmit_queued; - struct enet_statistics stats; -}; - -int irqtab[] = { 9,12,15,5 }; /* irq config-translate */ -int dmatab[] = { 0,3,5,6 }; /* dma config-translate */ - -/* - * open (most done by init) - */ - -static int ni65_open(struct device *dev) -{ - if(am7990_reinit(dev)) - { - dev->tbusy = 0; - dev->interrupt = 0; - dev->start = 1; - return 0; - } - else - { - dev->start = 0; - return -EAGAIN; - } -} - -static int ni65_close(struct device *dev) -{ - outw(0,PORT+L_RESET); /* that's the hard way */ - dev->tbusy = 1; - dev->start = 0; - return 0; -} - -/* - * Probe The Card (not the lance-chip) - * and set hardaddress - */ - -int ni65_probe(struct device *dev) -{ - int *port, ports[] = {0x300,0x320,0x340,0x360, 0}; - int base_addr = dev->base_addr; - - if (base_addr > 0x1ff) /* Check a single specified location. */ - return ni65_probe1(dev, base_addr); - else if (base_addr > 0) /* Don't probe at all. */ - return ENXIO; - - for (port = ports; *port; port++) - { - int ioaddr = *port; - if (check_region(ioaddr, NI65_TOTAL_SIZE)) - continue; - if( !(inb(ioaddr+L_EBASE+6) == CARD_ID0) || - !(inb(ioaddr+L_EBASE+7) == CARD_ID1) ) - continue; - dev->base_addr = ioaddr; - if (ni65_probe1(dev, ioaddr) == 0) - return 0; - } - - dev->base_addr = base_addr; - return ENODEV; -} - - -static int ni65_probe1(struct device *dev,int ioaddr) -{ - int i; - unsigned char station_addr[6]; - struct priv *p; - - for(i=0;i<6;i++) - station_addr[i] = dev->dev_addr[i] = inb(PORT+L_EBASE+i); - - if(station_addr[0] != SA_ADDR0 || station_addr[1] != SA_ADDR1) - { - printk("%s: wrong Hardaddress \n",dev->name); - return ENODEV; - } - - if(dev->irq == 0) - dev->irq = irqtab[(inw(PORT+L_CONFIG)>>2)&3]; - if(dev->dma == 0) - dev->dma = dmatab[inw(PORT+L_CONFIG)&3]; - - printk("%s: %s found at %#3lx, IRQ %d DMA %d.\n", dev->name, - "network card", dev->base_addr, dev->irq,dev->dma); - - { - int irqval = request_irq(dev->irq, &ni65_interrupt,0,"ni65"); - if (irqval) { - printk ("%s: unable to get IRQ %d (irqval=%d).\n", - dev->name,dev->irq, irqval); - return EAGAIN; - } - if(request_dma(dev->dma, "ni65") != 0) - { - printk("%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); - free_irq(dev->irq); - return EAGAIN; - } - } - irq2dev_map[dev->irq] = dev; - - /* Grab the region so we can find another board if autoIRQ fails. */ - request_region(ioaddr,NI65_TOTAL_SIZE,"ni65"); - - p = dev->priv = (void *) kmalloc(sizeof(struct priv),GFP_KERNEL); - if (p == NULL) - return -ENOMEM; - memset((char *) dev->priv,0,sizeof(struct priv)); - - dev->open = ni65_open; - dev->stop = ni65_close; - dev->hard_start_xmit = ni65_send_packet; - dev->get_stats = ni65_get_stats; - dev->set_multicast_list = set_multicast_list; - - ether_setup(dev); - - dev->flags &= ~IFF_MULTICAST; - dev->interrupt = 0; - dev->tbusy = 0; - dev->start = 0; - - if( (p->memptr = kmalloc(MEMSIZE,GFP_KERNEL)) == NULL) { - printk("%s: Can't alloc TMD/RMD-buffer.\n",dev->name); - return EAGAIN; - } - if( (unsigned long) (p->memptr + MEMSIZE) & 0xff000000) { - printk("%s: Can't alloc TMD/RMD buffer in lower 16MB!\n",dev->name); - return EAGAIN; - } - p->tmdhead = (struct tmd *) ((( (unsigned long)p->memptr ) + 8) & 0xfffffff8); - p->rmdhead = (struct rmd *) (p->tmdhead + TMDNUM); - -#ifndef NO_STATIC - for(i=0;i<TMDNUM;i++) - { - if( (p->tmdbufs[i] = kmalloc(T_BUF_SIZE,GFP_ATOMIC)) == NULL) { - printk("%s: Can't alloc Xmit-Mem.\n",dev->name); - return EAGAIN; - } - if( (unsigned long) (p->tmdbufs[i]+T_BUF_SIZE) & 0xff000000) { - printk("%s: Can't alloc Xmit-Mem in lower 16MB!\n",dev->name); - return EAGAIN; - } - } -#endif - - for(i=0;i<RMDNUM;i++) - { - if( (p->recv_skb[i] = dev_alloc_skb(R_BUF_SIZE)) == NULL) { - printk("%s: unable to alloc recv-mem\n",dev->name); - return EAGAIN; - } - if( (unsigned long) (p->recv_skb[i]->data + R_BUF_SIZE) & 0xff000000) { - printk("%s: unable to alloc receive-memory in lower 16MB!\n",dev->name); - return EAGAIN; - } - } - - return 0; /* we've found everything */ -} - -/* - * init lance (write init-values .. init-buffers) (open-helper) - */ - -static int am7990_reinit(struct device *dev) -{ - int i,j; - struct tmd *tmdp; - struct rmd *rmdp; - struct priv *p = (struct priv *) dev->priv; - - p->lock = 0; - p->xmit_queued = 0; - - disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ - set_dma_mode(dev->dma,DMA_MODE_CASCADE); - enable_dma(dev->dma); - - outw(0,PORT+L_RESET); /* first: reset the card */ - if(inw(PORT+L_DATAREG) != 0x4) - { - printk("%s: can't RESET ni6510 card: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); - disable_dma(dev->dma); - free_dma(dev->dma); - free_irq(dev->irq); - return 0; - } - - /* here: memset all buffs to zero */ - - memset(p->memptr,0,MEMSIZE); - - p->tmdnum = 0; p->tmdlast = 0; - for(i=0;i<TMDNUM;i++) - { - tmdp = p->tmdhead + i; -#ifndef NO_STATIC - tmdp->u.buffer = (unsigned long) p->tmdbufs[i]; -#endif - tmdp->u.s.status = XMIT_START | XMIT_END; - } - - p->rmdnum = 0; - for(i=0;i<RMDNUM;i++) - { - rmdp = p->rmdhead + i; - rmdp->u.buffer = (unsigned long) p->recv_skb[i]->data; - rmdp->u.s.status = RCV_OWN; - rmdp->blen = -R_BUF_SIZE; - rmdp->mlen = 0; - } - - for(i=0;i<6;i++) - { - p->ib.eaddr[i] = dev->dev_addr[i]; - } - p->ib.mode = 0; - for(i=0;i<8;i++) - p->ib.filter[i] = 0; - p->ib.trplow = (unsigned short) (( (unsigned long) p->tmdhead ) & 0xffff); - p->ib.trphigh = (unsigned short) ((( (unsigned long) p->tmdhead )>>16) & 0x00ff) | TMDNUMMASK; - p->ib.rrplow = (unsigned short) (( (unsigned long) p->rmdhead ) & 0xffff); - p->ib.rrphigh = (unsigned short) ((( (unsigned long) p->rmdhead )>>16) & 0x00ff) | RMDNUMMASK; - - writereg(0,CSR3); /* busmaster/no word-swap */ - writereg((unsigned short) (((unsigned long) &(p->ib)) & 0xffff),CSR1); - writereg((unsigned short) (((unsigned long) &(p->ib))>>16),CSR2); - - writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ - - /* - * NOW, WE NEVER WILL CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED - */ - - for(i=0;i<5;i++) - { - for(j=0;j<2000000;j++); /* wait a while */ - if(inw(PORT+L_DATAREG) & CSR0_IDON) break; /* init ok ? */ - } - if(i == 5) - { - printk("%s: can't init am7990, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); - disable_dma(dev->dma); - free_dma(dev->dma); - free_irq(dev->irq); - return 0; /* false */ - } - - writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); /* start lance , enable interrupts */ - - return 1; /* OK */ -} - -/* - * interrupt handler - */ - -static void ni65_interrupt(int irq, struct pt_regs * regs) -{ - int csr0; - struct device *dev = (struct device *) irq2dev_map[irq]; - - if (dev == NULL) { - printk ("net_interrupt(): irq %d for unknown device.\n", irq); - return; - } - - csr0 = inw(PORT+L_DATAREG); - writedatareg(csr0 & CSR0_CLRALL); /* ack interrupts, disable int. */ - - dev->interrupt = 1; - - if(csr0 & CSR0_ERR) - { - struct priv *p = (struct priv *) dev->priv; - - if(csr0 & CSR0_BABL) - p->stats.tx_errors++; - if(csr0 & CSR0_MISS) - p->stats.rx_errors++; - } - - if(csr0 & CSR0_RINT) /* RECV-int? */ - { - recv_intr(dev); - } - if(csr0 & CSR0_TINT) /* XMIT-int? */ - { - xmit_intr(dev); - } - - writedatareg(CSR0_INEA); /* reenable inter. */ - dev->interrupt = 0; - - return; -} - -/* - * We have received an Xmit-Interrupt .. - * send a new packet if necessary - */ - -static void xmit_intr(struct device *dev) -{ - int tmdstat; - struct tmd *tmdp; - struct priv *p = (struct priv *) dev->priv; - -#ifdef NO_STATIC - struct sk_buff *skb; -#endif - - while(p->xmit_queued) - { - tmdp = p->tmdhead + p->tmdlast; - tmdstat = tmdp->u.s.status; - if(tmdstat & XMIT_OWN) - break; -#ifdef NO_STATIC - skb = (struct sk_buff *) p->tmdbufs[p->tmdlast]; - dev_kfree_skb(skb,FREE_WRITE); -#endif - - if(tmdstat & XMIT_ERR) - { - printk("%s: xmit-error: %04x %04x\n",dev->name,(int) tmdstat,(int) tmdp->status2); - if(tmdp->status2 & XMIT_TDRMASK) - printk("%s: tdr-problems (e.g. no resistor)\n",dev->name); - - /* checking some errors */ - if(tmdp->status2 & XMIT_RTRY) - p->stats.tx_aborted_errors++; - if(tmdp->status2 & XMIT_LCAR) - p->stats.tx_carrier_errors++; - p->stats.tx_errors++; - tmdp->status2 = 0; - } - else - p->stats.tx_packets++; - - p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); - if(p->tmdlast == p->tmdnum) - p->xmit_queued = 0; - } - - dev->tbusy = 0; - mark_bh(NET_BH); -} - -/* - * We have received a packet - */ - -static void recv_intr(struct device *dev) -{ - struct rmd *rmdp; - int rmdstat,len; - struct sk_buff *skb,*skb1; - struct priv *p = (struct priv *) dev->priv; - - rmdp = p->rmdhead + p->rmdnum; - while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) - { - if( (rmdstat & (RCV_START | RCV_END)) != (RCV_START | RCV_END) ) /* is packet start & end? */ - { - if(rmdstat & RCV_START) - { - p->stats.rx_errors++; - p->stats.rx_length_errors++; - printk("%s: packet too long\n",dev->name); - } - rmdp->u.s.status = RCV_OWN; /* change owner */ - } - else if(rmdstat & RCV_ERR) - { - printk("%s: receive-error: %04x\n",dev->name,(int) rmdstat ); - p->stats.rx_errors++; - if(rmdstat & RCV_FRAM) p->stats.rx_frame_errors++; - if(rmdstat & RCV_OFLO) p->stats.rx_over_errors++; - if(rmdstat & RCV_CRC) p->stats.rx_crc_errors++; - rmdp->u.s.status = RCV_OWN; - printk("%s: lance-status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); - } - else - { - len = (rmdp->mlen & 0x0fff) - 4; /* -4: ignore FCS */ - skb = dev_alloc_skb(R_BUF_SIZE); - if(skb != NULL) - { - if( (unsigned long) (skb->data + R_BUF_SIZE) & 0xff000000) { - memcpy(skb_put(skb,len),p->recv_skb[p->rmdnum]->data,len); - skb1 = skb; - } - else { - skb1 = p->recv_skb[p->rmdnum]; - p->recv_skb[p->rmdnum] = skb; - rmdp->u.buffer = (unsigned long) skb_put(skb1,len); - } - rmdp->u.s.status = RCV_OWN; - rmdp->mlen = 0; /* not necc ???? */ - skb1->dev = dev; - p->stats.rx_packets++; - skb1->protocol=eth_type_trans(skb1,dev); - netif_rx(skb1); - } - else - { - rmdp->u.s.status = RCV_OWN; - printk("%s: can't alloc new sk_buff\n",dev->name); - p->stats.rx_dropped++; - } - } - p->rmdnum++; p->rmdnum &= RMDNUM-1; - rmdp = p->rmdhead + p->rmdnum; - } -} - -/* - * kick xmitter .. - */ - -static int ni65_send_packet(struct sk_buff *skb, struct device *dev) -{ - struct priv *p = (struct priv *) dev->priv; - struct tmd *tmdp; - - if(dev->tbusy) - { - int tickssofar = jiffies - dev->trans_start; - if (tickssofar < 25) - return 1; - - printk("%s: xmitter timed out, try to restart!\n",dev->name); - am7990_reinit(dev); - dev->tbusy=0; - dev->trans_start = jiffies; - } - - if(skb == NULL) - { - dev_tint(dev); - return 0; - } - - if (skb->len <= 0) - return 0; - - if (set_bit(0, (void*)&dev->tbusy) != 0) - { - printk("%s: Transmitter access conflict.\n", dev->name); - return 1; - } - if(set_bit(0,(void*) &p->lock) != 0) - { - printk("%s: Queue was locked!\n",dev->name); - return 1; - } - - { - short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; - - tmdp = p->tmdhead + p->tmdnum; - -#ifdef NO_STATIC - tmdp->u.buffer = (unsigned long) (skb->data); - p->tmdbufs[p->tmdnum] = skb; -#else - memcpy((char *) (tmdp->u.buffer & 0x00ffffff),(char *)skb->data,skb->len); - dev_kfree_skb (skb, FREE_WRITE); -#endif - tmdp->blen = -len; - tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; - - cli(); - p->xmit_queued = 1; - writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ - p->tmdnum++; p->tmdnum &= TMDNUM-1; - - if( !((p->tmdhead + p->tmdnum)->u.s.status & XMIT_OWN) ) - dev->tbusy = 0; - p->lock = 0; - sti(); - - dev->trans_start = jiffies; - - } - - return 0; -} - -static struct enet_statistics *ni65_get_stats(struct device *dev) -{ - return &((struct priv *) dev->priv)->stats; -} - -static void set_multicast_list(struct device *dev) -{ -} - -/* - * END of ni65.c - */ - |