ni65.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:29k
- /*
- * ni6510 (am7990 'lance' chip) driver for Linux-net-3
- * BETAcode v0.71 (96/09/29) for 2.0.0 (or later)
- * copyrights (c) 1994,1995,1996 by M.Hipp
- *
- * This driver can handle the old ni6510 board and the newer ni6510
- * EtherBlaster. (probably it also works with every full NE2100
- * compatible card)
- *
- * To compile as module, type:
- * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c
- * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
- *
- * This is an extension to the Linux operating system, and is covered by the
- * same GNU General Public License that covers the Linux-kernel.
- *
- * comments/bugs/suggestions can be sent to:
- * Michael Hipp
- * email: hippm@informatik.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
- *
- * known problems:
- * - on some PCI boards (including my own) the card/board/ISA-bridge has
- * problems with bus master DMA. This results in lotsa overruns.
- * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
- * the XMT and RCV_VIA_SKB option .. this reduces driver performance.
- * Or just play with your BIOS options to optimize ISA-DMA access.
- * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
- * defines -> please report me your experience then
- * - Harald reported for ASUS SP3G mainboards, that you should use
- * the 'optimal settings' from the user's manual on page 3-12!
- *
- * credits:
- * thanx to Jason Sullivan for sending me a ni6510 card!
- * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
- *
- * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
- * average: FTP -> 8384421 bytes received in 8.5 seconds
- * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
- * peak: FTP -> 8384421 bytes received in 7.5 seconds
- * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
- */
- /*
- * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
- * 96.Sept.29: virt_to_bus stuff added for new memory modell
- * 96.April.29: Added Harald Koenig's Patches (MH)
- * 96.April.13: enhanced error handling .. more tests (MH)
- * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
- * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
- * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
- * hopefully no more 16MB limit
- *
- * 95.Nov.18: multicast tweaked (AC).
- *
- * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
- *
- * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH)
- */
- #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/slab.h>
- #include <linux/interrupt.h>
- #include <linux/delay.h>
- #include <linux/init.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 <linux/version.h>
- #include <linux/module.h>
- #include "ni65.h"
- /*
- * the current setting allows an acceptable performance
- * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in
- * the header of this file
- * 'invert' the defines for max. performance. This may cause DMA problems
- * on some boards (e.g on my ASUS SP3G)
- */
- #undef XMT_VIA_SKB
- #undef RCV_VIA_SKB
- #define RCV_PARANOIA_CHECK
- #define MID_PERFORMANCE
- #if defined( LOW_PERFORMANCE )
- static int isa0=7,isa1=7,csr80=0x0c10;
- #elif defined( MID_PERFORMANCE )
- static int isa0=5,isa1=5,csr80=0x2810;
- #else /* high performance */
- static int isa0=4,isa1=4,csr80=0x0017;
- #endif
- /*
- * a few card/vendor specific defines
- */
- #define NI65_ID0 0x00
- #define NI65_ID1 0x55
- #define NI65_EB_ID0 0x52
- #define NI65_EB_ID1 0x44
- #define NE2100_ID0 0x57
- #define NE2100_ID1 0x57
- #define PORT p->cmdr_addr
- /*
- * buffer configuration
- */
- #if 1
- #define RMDNUM 16
- #define RMDNUMMASK 0x80000000
- #else
- #define RMDNUM 8
- #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */
- #endif
- #if 0
- #define TMDNUM 1
- #define TMDNUMMASK 0x00000000
- #else
- #define TMDNUM 4
- #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */
- #endif
- /* slightly oversized */
- #define R_BUF_SIZE 1544
- #define T_BUF_SIZE 1544
- /*
- * lance register defines
- */
- #define L_DATAREG 0x00
- #define L_ADDRREG 0x02
- #define L_RESET 0x04
- #define L_CONFIG 0x05
- #define L_BUSIF 0x06
- /*
- * to access the lance/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
- #define INIT_RING_BEFORE_START 0x1
- #define FULL_RESET_ON_ERROR 0x2
- #if 0
- #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))
- #if 0
- #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
- #else
- #define writedatareg(val) { writereg(val,CSR0); }
- #endif
- #else
- #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
- #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
- #define writedatareg(val) { writereg(val,CSR0); }
- #endif
- static unsigned char ni_vendor[] = { 0x02,0x07,0x01 };
- static struct card {
- unsigned char id0,id1;
- short id_offset;
- short total_size;
- short cmd_offset;
- short addr_offset;
- unsigned char *vendor_id;
- char *cardname;
- unsigned char config;
- } cards[] = {
- { NI65_ID0,NI65_ID1,0x0e,0x10,0x0,0x8,ni_vendor,"ni6510", 0x1 } ,
- { NI65_EB_ID0,NI65_EB_ID1,0x0e,0x18,0x10,0x0,ni_vendor,"ni6510 EtherBlaster", 0x2 } ,
- { NE2100_ID0,NE2100_ID1,0x0e,0x18,0x10,0x0,NULL,"generic NE2100", 0x0 }
- };
- #define NUM_CARDS 3
- struct priv
- {
- struct rmd rmdhead[RMDNUM];
- struct tmd tmdhead[TMDNUM];
- struct init_block ib;
- int rmdnum;
- int tmdnum,tmdlast;
- #ifdef RCV_VIA_SKB
- struct sk_buff *recv_skb[RMDNUM];
- #else
- void *recvbounce[RMDNUM];
- #endif
- #ifdef XMT_VIA_SKB
- struct sk_buff *tmd_skb[TMDNUM];
- #endif
- void *tmdbounce[TMDNUM];
- int tmdbouncenum;
- int lock,xmit_queued;
- struct net_device_stats stats;
- void *self;
- int cmdr_addr;
- int cardno;
- int features;
- };
- static int ni65_probe1(struct net_device *dev,int);
- static void ni65_interrupt(int irq, void * dev_id, struct pt_regs *regs);
- static void ni65_recv_intr(struct net_device *dev,int);
- static void ni65_xmit_intr(struct net_device *dev,int);
- static int ni65_open(struct net_device *dev);
- static int ni65_lance_reinit(struct net_device *dev);
- static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
- static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev);
- static void ni65_timeout(struct net_device *dev);
- static int ni65_close(struct net_device *dev);
- static int ni65_alloc_buffer(struct net_device *dev);
- static void ni65_free_buffer(struct priv *p);
- static struct net_device_stats *ni65_get_stats(struct net_device *);
- static void set_multicast_list(struct net_device *dev);
- static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */
- static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */
- static int debuglevel = 1;
- /*
- * set 'performance' registers .. we must STOP lance for that
- */
- static void ni65_set_performance(struct priv *p)
- {
- writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */
- if( !(cards[p->cardno].config & 0x02) )
- return;
- outw(80,PORT+L_ADDRREG);
- if(inw(PORT+L_ADDRREG) != 80)
- return;
- writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */
- outw(0,PORT+L_ADDRREG);
- outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */
- outw(1,PORT+L_ADDRREG);
- outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */
- outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */
- }
- /*
- * open interface (up)
- */
- static int ni65_open(struct net_device *dev)
- {
- struct priv *p = (struct priv *) dev->priv;
- int irqval = request_irq(dev->irq, &ni65_interrupt,0,
- cards[p->cardno].cardname,dev);
- if (irqval) {
- printk ("%s: unable to get IRQ %d (irqval=%d).n",
- dev->name,dev->irq, irqval);
- return -EAGAIN;
- }
- if(ni65_lance_reinit(dev))
- {
- netif_start_queue(dev);
- MOD_INC_USE_COUNT;
- return 0;
- }
- else
- {
- free_irq(dev->irq,dev);
- return -EAGAIN;
- }
- }
- /*
- * close interface (down)
- */
- static int ni65_close(struct net_device *dev)
- {
- struct priv *p = (struct priv *) dev->priv;
- netif_stop_queue(dev);
-
- outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */
- #ifdef XMT_VIA_SKB
- {
- int i;
- for(i=0;i<TMDNUM;i++)
- {
- if(p->tmd_skb[i]) {
- dev_kfree_skb(p->tmd_skb[i]);
- p->tmd_skb[i] = NULL;
- }
- }
- }
- #endif
- free_irq(dev->irq,dev);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- /*
- * Probe The Card (not the lance-chip)
- */
- #ifdef MODULE
- static
- #endif
- int __init ni65_probe(struct net_device *dev)
- {
- int *port;
- static int ports[] = {0x360,0x300,0x320,0x340, 0};
- if (dev->base_addr > 0x1ff) /* Check a single specified location. */
- return ni65_probe1(dev, dev->base_addr);
- else if (dev->base_addr > 0) /* Don't probe at all. */
- return -ENXIO;
- for (port = ports; *port; port++)
- {
- if (ni65_probe1(dev, *port) == 0)
- return 0;
- }
- return -ENODEV;
- }
- /*
- * this is the real card probe ..
- */
- static int __init ni65_probe1(struct net_device *dev,int ioaddr)
- {
- int i,j;
- struct priv *p;
- unsigned long flags;
- for(i=0;i<NUM_CARDS;i++) {
- if(check_region(ioaddr, cards[i].total_size))
- continue;
- if(cards[i].id_offset >= 0) {
- if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 ||
- inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) {
- continue;
- }
- }
- if(cards[i].vendor_id) {
- for(j=0;j<3;j++)
- if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j])
- continue;
- }
- break;
- }
- if(i == NUM_CARDS)
- return -ENODEV;
- for(j=0;j<6;j++)
- dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j);
- if( (j=ni65_alloc_buffer(dev)) < 0)
- return j;
- p = (struct priv *) dev->priv;
- p->cmdr_addr = ioaddr + cards[i].cmd_offset;
- p->cardno = i;
- printk("%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr);
- outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
- if( (j=readreg(CSR0)) != 0x4) {
- printk(KERN_ERR "can't RESET card: %04xn",j);
- ni65_free_buffer(p);
- return -EAGAIN;
- }
- outw(88,PORT+L_ADDRREG);
- if(inw(PORT+L_ADDRREG) == 88) {
- unsigned long v;
- v = inw(PORT+L_DATAREG);
- v <<= 16;
- outw(89,PORT+L_ADDRREG);
- v |= inw(PORT+L_DATAREG);
- printk("Version %#08lx, ",v);
- p->features = INIT_RING_BEFORE_START;
- }
- else {
- printk("ancient LANCE, ");
- p->features = 0x0;
- }
- if(test_bit(0,&cards[i].config)) {
- dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3];
- dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3];
- printk("IRQ %d (from card), DMA %d (from card).n",dev->irq,dev->dma);
- }
- else {
- if(dev->dma == 0) {
- /* 'stuck test' from lance.c */
- int dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) | (inb(DMA2_STAT_REG) & 0xf0);
- for(i=1;i<5;i++) {
- int dma = dmatab[i];
- if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))
- continue;
-
- flags=claim_dma_lock();
- disable_dma(dma);
- set_dma_mode(dma,DMA_MODE_CASCADE);
- enable_dma(dma);
- release_dma_lock(flags);
-
- ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */
-
- flags=claim_dma_lock();
- disable_dma(dma);
- free_dma(dma);
- release_dma_lock(flags);
-
- if(readreg(CSR0) & CSR0_IDON)
- break;
- }
- if(i == 5) {
- printk("Can't detect DMA channel!n");
- ni65_free_buffer(p);
- return -EAGAIN;
- }
- dev->dma = dmatab[i];
- printk("DMA %d (autodetected), ",dev->dma);
- }
- else
- printk("DMA %d (assigned), ",dev->dma);
- if(dev->irq < 2)
- {
- ni65_init_lance(p,dev->dev_addr,0,0);
- autoirq_setup(0);
- writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */
- if(!(dev->irq = autoirq_report(2)))
- {
- printk("Failed to detect IRQ line!n");
- ni65_free_buffer(p);
- return -EAGAIN;
- }
- printk("IRQ %d (autodetected).n",dev->irq);
- }
- else
- printk("IRQ %d (assigned).n",dev->irq);
- }
- if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0)
- {
- printk("%s: Can't request dma-channel %dn",dev->name,(int) dev->dma);
- ni65_free_buffer(p);
- return -EAGAIN;
- }
- /*
- * Grab the region so we can find another board.
- */
- request_region(ioaddr,cards[p->cardno].total_size,cards[p->cardno].cardname);
- dev->base_addr = ioaddr;
- dev->open = ni65_open;
- dev->stop = ni65_close;
- dev->hard_start_xmit = ni65_send_packet;
- dev->tx_timeout = ni65_timeout;
- dev->watchdog_timeo = HZ/2;
- dev->get_stats = ni65_get_stats;
- dev->set_multicast_list = set_multicast_list;
- ether_setup(dev);
- return 0; /* everything is OK */
- }
- /*
- * set lance register and trigger init
- */
- static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode)
- {
- int i;
- u32 pib;
- writereg(CSR0_CLRALL|CSR0_STOP,CSR0);
- for(i=0;i<6;i++)
- p->ib.eaddr[i] = daddr[i];
- for(i=0;i<8;i++)
- p->ib.filter[i] = filter;
- p->ib.mode = mode;
- p->ib.trp = (u32) virt_to_bus(p->tmdhead) | TMDNUMMASK;
- p->ib.rrp = (u32) virt_to_bus(p->rmdhead) | RMDNUMMASK;
- writereg(0,CSR3); /* busmaster/no word-swap */
- pib = (u32) virt_to_bus(&p->ib);
- writereg(pib & 0xffff,CSR1);
- writereg(pib >> 16,CSR2);
- writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */
- for(i=0;i<32;i++)
- {
- mdelay(4);
- if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) )
- break; /* init ok ? */
- }
- }
- /*
- * allocate memory area and check the 16MB border
- */
- static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type)
- {
- struct sk_buff *skb=NULL;
- unsigned char *ptr;
- void *ret;
- if(type) {
- ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA);
- if(!skb) {
- printk("%s: unable to allocate %s memory.n",dev->name,what);
- return NULL;
- }
- skb->dev = dev;
- skb_reserve(skb,2+16);
- skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */
- ptr = skb->data;
- }
- else {
- ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA);
- if(!ret) {
- printk("%s: unable to allocate %s memory.n",dev->name,what);
- return NULL;
- }
- }
- if( (u32) virt_to_bus(ptr+size) > 0x1000000) {
- printk("%s: unable to allocate %s memory in lower 16MB!n",dev->name,what);
- if(type)
- kfree_skb(skb);
- else
- kfree(ptr);
- return NULL;
- }
- return ret;
- }
- /*
- * allocate all memory structures .. send/recv buffers etc ...
- */
- static int ni65_alloc_buffer(struct net_device *dev)
- {
- unsigned char *ptr;
- struct priv *p;
- int i;
- /*
- * we need 8-aligned memory ..
- */
- ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0);
- if(!ptr)
- return -ENOMEM;
- p = dev->priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
- memset((char *) dev->priv,0,sizeof(struct priv));
- p->self = ptr;
- for(i=0;i<TMDNUM;i++)
- {
- #ifdef XMT_VIA_SKB
- p->tmd_skb[i] = NULL;
- #endif
- p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
- if(!p->tmdbounce[i]) {
- ni65_free_buffer(p);
- return -ENOMEM;
- }
- }
- for(i=0;i<RMDNUM;i++)
- {
- #ifdef RCV_VIA_SKB
- p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
- if(!p->recv_skb[i]) {
- ni65_free_buffer(p);
- return -ENOMEM;
- }
- #else
- p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
- if(!p->recvbounce[i]) {
- ni65_free_buffer(p);
- return -ENOMEM;
- }
- #endif
- }
- return 0; /* everything is OK */
- }
- /*
- * free buffers and private struct
- */
- static void ni65_free_buffer(struct priv *p)
- {
- int i;
- if(!p)
- return;
- for(i=0;i<TMDNUM;i++) {
- if(p->tmdbounce[i])
- kfree(p->tmdbounce[i]);
- #ifdef XMT_VIA_SKB
- if(p->tmd_skb[i])
- dev_kfree_skb(p->tmd_skb[i]);
- #endif
- }
- for(i=0;i<RMDNUM;i++)
- {
- #ifdef RCV_VIA_SKB
- if(p->recv_skb[i])
- dev_kfree_skb(p->recv_skb[i]);
- #else
- if(p->recvbounce[i])
- kfree(p->recvbounce[i]);
- #endif
- }
- if(p->self)
- kfree(p->self);
- }
- /*
- * stop and (re)start lance .. e.g after an error
- */
- static void ni65_stop_start(struct net_device *dev,struct priv *p)
- {
- int csr0 = CSR0_INEA;
- writedatareg(CSR0_STOP);
- if(debuglevel > 1)
- printk("ni65_stop_startn");
- if(p->features & INIT_RING_BEFORE_START) {
- int i;
- #ifdef XMT_VIA_SKB
- struct sk_buff *skb_save[TMDNUM];
- #endif
- unsigned long buffer[TMDNUM];
- short blen[TMDNUM];
- if(p->xmit_queued) {
- while(1) {
- if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN))
- break;
- p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
- if(p->tmdlast == p->tmdnum)
- break;
- }
- }
- for(i=0;i<TMDNUM;i++) {
- struct tmd *tmdp = p->tmdhead + i;
- #ifdef XMT_VIA_SKB
- skb_save[i] = p->tmd_skb[i];
- #endif
- buffer[i] = (u32) bus_to_virt(tmdp->u.buffer);
- blen[i] = tmdp->blen;
- tmdp->u.s.status = 0x0;
- }
- for(i=0;i<RMDNUM;i++) {
- struct rmd *rmdp = p->rmdhead + i;
- rmdp->u.s.status = RCV_OWN;
- }
- p->tmdnum = p->xmit_queued = 0;
- writedatareg(CSR0_STRT | csr0);
- for(i=0;i<TMDNUM;i++) {
- int num = (i + p->tmdlast) & (TMDNUM-1);
- p->tmdhead[i].u.buffer = (u32) virt_to_bus((char *)buffer[num]); /* status is part of buffer field */
- p->tmdhead[i].blen = blen[num];
- if(p->tmdhead[i].u.s.status & XMIT_OWN) {
- p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
- p->xmit_queued = 1;
- writedatareg(CSR0_TDMD | CSR0_INEA | csr0);
- }
- #ifdef XMT_VIA_SKB
- p->tmd_skb[i] = skb_save[num];
- #endif
- }
- p->rmdnum = p->tmdlast = 0;
- if(!p->lock)
- if (p->tmdnum || !p->xmit_queued)
- netif_wake_queue(dev);
- dev->trans_start = jiffies;
- }
- else
- writedatareg(CSR0_STRT | csr0);
- }
- /*
- * init lance (write init-values .. init-buffers) (open-helper)
- */
- static int ni65_lance_reinit(struct net_device *dev)
- {
- int i;
- struct priv *p = (struct priv *) dev->priv;
- unsigned long flags;
- p->lock = 0;
- p->xmit_queued = 0;
- flags=claim_dma_lock();
- 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);
- release_dma_lock(flags);
- outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
- if( (i=readreg(CSR0) ) != 0x4)
- {
- printk(KERN_ERR "%s: can't RESET %s card: %04xn",dev->name,
- cards[p->cardno].cardname,(int) i);
- flags=claim_dma_lock();
- disable_dma(dev->dma);
- release_dma_lock(flags);
- return 0;
- }
- p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0;
- for(i=0;i<TMDNUM;i++)
- {
- struct tmd *tmdp = p->tmdhead + i;
- #ifdef XMT_VIA_SKB
- if(p->tmd_skb[i]) {
- dev_kfree_skb(p->tmd_skb[i]);
- p->tmd_skb[i] = NULL;
- }
- #endif
- tmdp->u.buffer = 0x0;
- tmdp->u.s.status = XMIT_START | XMIT_END;
- tmdp->blen = tmdp->status2 = 0;
- }
- for(i=0;i<RMDNUM;i++)
- {
- struct rmd *rmdp = p->rmdhead + i;
- #ifdef RCV_VIA_SKB
- rmdp->u.buffer = (u32) virt_to_bus(p->recv_skb[i]->data);
- #else
- rmdp->u.buffer = (u32) virt_to_bus(p->recvbounce[i]);
- #endif
- rmdp->blen = -(R_BUF_SIZE-8);
- rmdp->mlen = 0;
- rmdp->u.s.status = RCV_OWN;
- }
- if(dev->flags & IFF_PROMISC)
- ni65_init_lance(p,dev->dev_addr,0x00,M_PROM);
- else if(dev->mc_count || dev->flags & IFF_ALLMULTI)
- ni65_init_lance(p,dev->dev_addr,0xff,0x0);
- else
- ni65_init_lance(p,dev->dev_addr,0x00,0x00);
- /*
- * ni65_set_lance_mem() sets L_ADDRREG to CSR0
- * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
- */
- if(inw(PORT+L_DATAREG) & CSR0_IDON) {
- ni65_set_performance(p);
- /* init OK: start lance , enable interrupts */
- writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT);
- return 1; /* ->OK */
- }
- printk(KERN_ERR "%s: can't init lance, status: %04xn",dev->name,(int) inw(PORT+L_DATAREG));
- flags=claim_dma_lock();
- disable_dma(dev->dma);
- release_dma_lock(flags);
- return 0; /* ->Error */
- }
- /*
- * interrupt handler
- */
- static void ni65_interrupt(int irq, void * dev_id, struct pt_regs * regs)
- {
- int csr0 = 0;
- struct net_device *dev = dev_id;
- struct priv *p;
- int bcnt = 32;
- p = (struct priv *) dev->priv;
- while(--bcnt) {
- csr0 = inw(PORT+L_DATAREG);
- #if 0
- writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */
- #else
- writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */
- #endif
- if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT)))
- break;
- if(csr0 & CSR0_RINT) /* RECV-int? */
- ni65_recv_intr(dev,csr0);
- if(csr0 & CSR0_TINT) /* XMIT-int? */
- ni65_xmit_intr(dev,csr0);
- if(csr0 & CSR0_ERR)
- {
- struct priv *p = (struct priv *) dev->priv;
- if(debuglevel > 1)
- printk("%s: general error: %04x.n",dev->name,csr0);
- if(csr0 & CSR0_BABL)
- p->stats.tx_errors++;
- if(csr0 & CSR0_MISS) {
- int i;
- for(i=0;i<RMDNUM;i++)
- printk("%02x ",p->rmdhead[i].u.s.status);
- printk("n");
- p->stats.rx_errors++;
- }
- if(csr0 & CSR0_MERR) {
- if(debuglevel > 1)
- printk("%s: Ooops .. memory error: %04x.n",dev->name,csr0);
- ni65_stop_start(dev,p);
- }
- }
- }
- #ifdef RCV_PARANOIA_CHECK
- {
- int j;
- for(j=0;j<RMDNUM;j++)
- {
- struct priv *p = (struct priv *) dev->priv;
- int i,k,num1,num2;
- for(i=RMDNUM-1;i>0;i--) {
- num2 = (p->rmdnum + i) & (RMDNUM-1);
- if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
- break;
- }
- if(i) {
- for(k=0;k<RMDNUM;k++) {
- num1 = (p->rmdnum + k) & (RMDNUM-1);
- if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
- break;
- }
- if(!k)
- break;
- if(debuglevel > 0)
- {
- char buf[256],*buf1;
- int k;
- buf1 = buf;
- for(k=0;k<RMDNUM;k++) {
- sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
- buf1 += 3;
- }
- *buf1 = 0;
- printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %sn",dev->name,p->rmdnum,i,buf);
- }
- p->rmdnum = num1;
- ni65_recv_intr(dev,csr0);
- if((p->rmdhead[num2].u.s.status & RCV_OWN))
- break; /* ok, we are 'in sync' again */
- }
- else
- break;
- }
- }
- #endif
- if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
- printk("%s: RX or TX was offline -> restartn",dev->name);
- ni65_stop_start(dev,p);
- }
- else
- writedatareg(CSR0_INEA);
- return;
- }
- /*
- * We have received an Xmit-Interrupt ..
- * send a new packet if necessary
- */
- static void ni65_xmit_intr(struct net_device *dev,int csr0)
- {
- struct priv *p = (struct priv *) dev->priv;
- while(p->xmit_queued)
- {
- struct tmd *tmdp = p->tmdhead + p->tmdlast;
- int tmdstat = tmdp->u.s.status;
- if(tmdstat & XMIT_OWN)
- break;
- if(tmdstat & XMIT_ERR)
- {
- #if 0
- if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3)
- printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)n",dev->name);
- #endif
- /* checking some errors */
- if(tmdp->status2 & XMIT_RTRY)
- p->stats.tx_aborted_errors++;
- if(tmdp->status2 & XMIT_LCAR)
- p->stats.tx_carrier_errors++;
- if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) {
- /* this stops the xmitter */
- p->stats.tx_fifo_errors++;
- if(debuglevel > 0)
- printk(KERN_ERR "%s: Xmit FIFO/BUFF errorn",dev->name);
- if(p->features & INIT_RING_BEFORE_START) {
- tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */
- ni65_stop_start(dev,p);
- break; /* no more Xmit processing .. */
- }
- else
- ni65_stop_start(dev,p);
- }
- if(debuglevel > 2)
- printk(KERN_ERR "%s: xmit-error: %04x %02x-%04xn",dev->name,csr0,(int) tmdstat,(int) tmdp->status2);
- if(!(csr0 & CSR0_BABL)) /* don't count errors twice */
- p->stats.tx_errors++;
- tmdp->status2 = 0;
- }
- else {
- p->stats.tx_bytes -= (short)(tmdp->blen);
- p->stats.tx_packets++;
- }
- #ifdef XMT_VIA_SKB
- if(p->tmd_skb[p->tmdlast]) {
- dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
- p->tmd_skb[p->tmdlast] = NULL;
- }
- #endif
- p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
- if(p->tmdlast == p->tmdnum)
- p->xmit_queued = 0;
- }
- netif_wake_queue(dev);
- }
- /*
- * We have received a packet
- */
- static void ni65_recv_intr(struct net_device *dev,int csr0)
- {
- struct rmd *rmdp;
- int rmdstat,len;
- int cnt=0;
- struct priv *p = (struct priv *) dev->priv;
- rmdp = p->rmdhead + p->rmdnum;
- while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
- {
- cnt++;
- if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
- {
- if(!(rmdstat & RCV_ERR)) {
- if(rmdstat & RCV_START)
- {
- p->stats.rx_length_errors++;
- printk(KERN_ERR "%s: recv, packet too long: %dn",dev->name,rmdp->mlen & 0x0fff);
- }
- }
- else {
- if(debuglevel > 2)
- printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04xn",
- dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) );
- 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++;
- if(rmdstat & RCV_BUF_ERR)
- p->stats.rx_fifo_errors++;
- }
- if(!(csr0 & CSR0_MISS)) /* don't count errors twice */
- p->stats.rx_errors++;
- }
- else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60)
- {
- #ifdef RCV_VIA_SKB
- struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC);
- if (skb)
- skb_reserve(skb,16);
- #else
- struct sk_buff *skb = dev_alloc_skb(len+2);
- #endif
- if(skb)
- {
- skb_reserve(skb,2);
- skb->dev = dev;
- #ifdef RCV_VIA_SKB
- if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) {
- skb_put(skb,len);
- eth_copy_and_sum(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len,0);
- }
- else {
- struct sk_buff *skb1 = p->recv_skb[p->rmdnum];
- skb_put(skb,R_BUF_SIZE);
- p->recv_skb[p->rmdnum] = skb;
- rmdp->u.buffer = (u32) virt_to_bus(skb->data);
- skb = skb1;
- skb_trim(skb,len);
- }
- #else
- skb_put(skb,len);
- eth_copy_and_sum(skb, (unsigned char *) p->recvbounce[p->rmdnum],len,0);
- #endif
- p->stats.rx_packets++;
- p->stats.rx_bytes += len;
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
- else
- {
- printk(KERN_ERR "%s: can't alloc new sk_buffn",dev->name);
- p->stats.rx_dropped++;
- }
- }
- else {
- printk(KERN_INFO "%s: received runt packetn",dev->name);
- p->stats.rx_errors++;
- }
- rmdp->blen = -(R_BUF_SIZE-8);
- rmdp->mlen = 0;
- rmdp->u.s.status = RCV_OWN; /* change owner */
- p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1);
- rmdp = p->rmdhead + p->rmdnum;
- }
- }
- /*
- * kick xmitter ..
- */
-
- static void ni65_timeout(struct net_device *dev)
- {
- int i;
- struct priv *p = (struct priv *) dev->priv;
- printk(KERN_ERR "%s: xmitter timed out, try to restart!n",dev->name);
- for(i=0;i<TMDNUM;i++)
- printk("%02x ",p->tmdhead[i].u.s.status);
- printk("n");
- ni65_lance_reinit(dev);
- dev->trans_start = jiffies;
- netif_wake_queue(dev);
- }
- /*
- * Send a packet
- */
- static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev)
- {
- struct priv *p = (struct priv *) dev->priv;
- netif_stop_queue(dev);
-
- if (test_and_set_bit(0, (void*)&p->lock)) {
- printk(KERN_ERR "%s: Queue was locked.n", dev->name);
- return 1;
- }
- {
- short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- struct tmd *tmdp;
- long flags;
- #ifdef XMT_VIA_SKB
- if( (unsigned long) (skb->data + skb->len) > 0x1000000) {
- #endif
- memcpy((char *) p->tmdbounce[p->tmdbouncenum] ,(char *)skb->data,
- (skb->len > T_BUF_SIZE) ? T_BUF_SIZE : skb->len);
- dev_kfree_skb (skb);
- save_flags(flags);
- cli();
- tmdp = p->tmdhead + p->tmdnum;
- tmdp->u.buffer = (u32) virt_to_bus(p->tmdbounce[p->tmdbouncenum]);
- p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1);
- #ifdef XMT_VIA_SKB
- }
- else {
- save_flags(flags);
- cli();
- tmdp = p->tmdhead + p->tmdnum;
- tmdp->u.buffer = (u32) virt_to_bus(skb->data);
- p->tmd_skb[p->tmdnum] = skb;
- }
- #endif
- tmdp->blen = -len;
- tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END;
- writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */
- p->xmit_queued = 1;
- p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1);
- if(p->tmdnum != p->tmdlast)
- netif_wake_queue(dev);
-
- p->lock = 0;
- dev->trans_start = jiffies;
- restore_flags(flags);
- }
- return 0;
- }
- static struct net_device_stats *ni65_get_stats(struct net_device *dev)
- {
- #if 0
- int i;
- struct priv *p = (struct priv *) dev->priv;
- for(i=0;i<RMDNUM;i++)
- {
- struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1));
- printk("%02x ",rmdp->u.s.status);
- }
- printk("n");
- #endif
- return &((struct priv *) dev->priv)->stats;
- }
- static void set_multicast_list(struct net_device *dev)
- {
- if(!ni65_lance_reinit(dev))
- printk(KERN_ERR "%s: Can't switch card into MC mode!n",dev->name);
- netif_wake_queue(dev);
- }
- #ifdef MODULE
- static struct net_device dev_ni65 = { base_addr: 0x360, irq: 9, init: ni65_probe };
- /* set: io,irq,dma or set it when calling insmod */
- static int irq;
- static int io;
- static int dma;
- MODULE_PARM(irq, "i");
- MODULE_PARM(io, "i");
- MODULE_PARM(dma, "i");
- MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
- MODULE_PARM_DESC(io, "ni6510 I/O base address");
- MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
- int init_module(void)
- {
- dev_ni65.irq = irq;
- dev_ni65.dma = dma;
- dev_ni65.base_addr = io;
- if (register_netdev(&dev_ni65) != 0)
- return -EIO;
- return 0;
- }
- void cleanup_module(void)
- {
- struct priv *p;
- p = (struct priv *) dev_ni65.priv;
- if(!p) {
- printk("Ooops .. no private structn");
- return;
- }
- disable_dma(dev_ni65.dma);
- free_dma(dev_ni65.dma);
- unregister_netdev(&dev_ni65);
- release_region(dev_ni65.base_addr,cards[p->cardno].total_size);
- ni65_free_buffer(p);
- dev_ni65.priv = NULL;
- }
- #endif /* MODULE */
- MODULE_LICENSE("GPL");
- /*
- * END of ni65.c
- */