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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [net/] [ni65.c] - Rev 1777
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/* * 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 Public License that covers the Linux-kernel. * * comments/bugs/suggestions can be sent to: * Michael Hipp * email: Michael.Hipp@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 * * 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) */ /* * 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/malloc.h> #include <linux/interrupt.h> #include <linux/delay.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 enet_statistics stats; void *self; int cmdr_addr; int cardno; int features; }; static int ni65_probe1(struct device *dev,int); static void ni65_interrupt(int irq, void * dev_id, struct pt_regs *regs); static void ni65_recv_intr(struct device *dev,int); static void ni65_xmit_intr(struct device *dev,int); static int ni65_open(struct device *dev); static int ni65_lance_reinit(struct device *dev); static void ni65_init_lance(struct priv *p,unsigned char*,int,int); static int ni65_send_packet(struct sk_buff *skb, struct device *dev); static int ni65_close(struct device *dev); static int ni65_alloc_buffer(struct device *dev); static void ni65_free_buffer(struct priv *p); static struct enet_statistics *ni65_get_stats(struct device *); static void set_multicast_list(struct device *dev); static int irqtab[] = { 9,12,15,5 }; /* irq config-translate */ static int dmatab[] = { 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 device *dev) { struct priv *p = (struct priv *) dev->priv; int irqval = request_irq(dev->irq, &ni65_interrupt,0, cards[p->cardno].cardname,NULL); if (irqval) { printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,dev->irq, irqval); return -EAGAIN; } irq2dev_map[dev->irq] = dev; if(ni65_lance_reinit(dev)) { dev->tbusy = 0; dev->interrupt = 0; dev->start = 1; MOD_INC_USE_COUNT; return 0; } else { irq2dev_map[dev->irq] = NULL; free_irq(dev->irq,NULL); dev->start = 0; return -EAGAIN; } } /* * close interface (down) */ static int ni65_close(struct device *dev) { struct priv *p = (struct priv *) dev->priv; 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],FREE_WRITE); p->tmd_skb[i] = NULL; } } } #endif irq2dev_map[dev->irq] = NULL; free_irq(dev->irq,NULL); dev->tbusy = 1; dev->start = 0; MOD_DEC_USE_COUNT; return 0; } /* * Probe The Card (not the lance-chip) */ #ifdef MODULE static #endif int ni65_probe(struct 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 ni65_probe1(struct device *dev,int ioaddr) { int i,j; struct priv *p; 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: %04x\n",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; disable_dma(dma); set_dma_mode(dma,DMA_MODE_CASCADE); enable_dma(dma); ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ disable_dma(dma); free_dma(dma); 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 %d\n",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->get_stats = ni65_get_stats; dev->set_multicast_list = set_multicast_list; ether_setup(dev); dev->interrupt = 0; dev->tbusy = 0; dev->start = 0; 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++) { udelay(4000); 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 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,FREE_WRITE); else kfree(ptr); return NULL; } return ret; } /* * allocate all memory structures .. send/recv buffers etc ... */ static int ni65_alloc_buffer(struct 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],FREE_WRITE); #endif } for(i=0;i<RMDNUM;i++) { #ifdef RCV_VIA_SKB if(p->recv_skb[i]) dev_kfree_skb(p->recv_skb[i],FREE_WRITE); #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 device *dev,struct priv *p) { int csr0 = CSR0_INEA; writedatareg(CSR0_STOP); if(debuglevel > 1) printk("ni65_stop_start\n"); 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) dev->tbusy = (p->tmdnum || !p->xmit_queued) ? 0 : 1; dev->trans_start = jiffies; } else writedatareg(CSR0_STRT | csr0); } /* * init lance (write init-values .. init-buffers) (open-helper) */ static int ni65_lance_reinit(struct device *dev) { int i; 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(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: %04x\n",dev->name, cards[p->cardno].cardname,(int) i); disable_dma(dev->dma); 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],FREE_WRITE); 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: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); disable_dma(dev->dma); return 0; /* ->Error */ } /* * interrupt handler */ static void ni65_interrupt(int irq, void * dev_id, struct pt_regs * regs) { int csr0; struct device *dev = (struct device *) irq2dev_map[irq]; struct priv *p; int bcnt = 32; if (dev == NULL) { printk (KERN_ERR "ni65_interrupt(): irq %d for unknown device.\n", irq); return; } if(set_bit(0,(int *) &dev->interrupt)) { printk("ni65: oops .. interrupt while proceeding interrupt\n"); return; } 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 | %s\n",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 -> restart\n",dev->name); ni65_stop_start(dev,p); } else writedatareg(CSR0_INEA); dev->interrupt = 0; return; } /* * We have received an Xmit-Interrupt .. * send a new packet if necessary */ static void ni65_xmit_intr(struct 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 error\n",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-%04x\n",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_packets++; #ifdef XMT_VIA_SKB if(p->tmd_skb[p->tmdlast]) { dev_kfree_skb(p->tmd_skb[p->tmdlast],FREE_WRITE); p->tmd_skb[p->tmdlast] = NULL; } #endif 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 ni65_recv_intr(struct 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: %d\n",dev->name,rmdp->mlen & 0x0fff); } } else { if(debuglevel > 2) printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", 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++; skb->protocol=eth_type_trans(skb,dev); netif_rx(skb); } else { printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); p->stats.rx_dropped++; } } else { printk(KERN_INFO "%s: received runt packet\n",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 int ni65_send_packet(struct sk_buff *skb, struct device *dev) { struct priv *p = (struct priv *) dev->priv; if(dev->tbusy) { int tickssofar = jiffies - dev->trans_start; if (tickssofar < 50) return 1; printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); { int i; for(i=0;i<TMDNUM;i++) printk("%02x ",p->tmdhead[i].u.s.status); printk("\n"); } ni65_lance_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(KERN_ERR "%s: Transmitter access conflict.\n", dev->name); return 1; } if (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, FREE_WRITE); 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); dev->tbusy = (p->tmdnum == p->tmdlast) ? 1 : 0; p->lock = 0; dev->trans_start = jiffies; restore_flags(flags); } return 0; } static struct enet_statistics *ni65_get_stats(struct 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 device *dev) { if(!ni65_lance_reinit(dev)) printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); dev->tbusy = 0; } #ifdef MODULE static struct device dev_ni65 = { " ", /* "ni6510": device name inserted by net_init.c */ 0, 0, 0, 0, 0x360, 9, /* I/O address, IRQ */ 0, 0, 0, NULL, ni65_probe }; /* set: io,irq,dma or set it when calling insmod */ static int irq=0; static int io=0; static int dma=0; int init_module(void) { #if 0 if(io <= 0x0 || irq < 2) { printk("ni65: Autoprobing not allowed for modules.\n"); printk("ni65: Set symbols 'io' 'irq' and 'dma'\n"); return -ENODEV; } #endif 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 privat struct\n"); return; } disable_dma(dev_ni65.dma); free_dma(dev_ni65.dma); release_region(dev_ni65.base_addr,cards[p->cardno].total_size); ni65_free_buffer(p); dev_ni65.priv = NULL; unregister_netdev(&dev_ni65); } #endif /* MODULE */ /* * END of ni65.c */
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