From 86297c41a26f18d924e64fc93321c59cbc4c48dd Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Mon, 26 Apr 1999 05:58:44 +0000 Subject: 1998-11-30 OKUJI Yoshinori Clean up linux emulation code to make it architecture-independent as much as possible. * linux: Renamed from linuxdev. * Makefile.in (objfiles): Add linux.o instead of linuxdev.o. (MAKE): New variable. Used for the linux.o target. * configure.in: Add AC_CHECK_TOOL(MAKE, make). * i386/i386/spl.h: Include , for compatibility with OSF Mach 3.0. Suggested by Elgin Lee . * linux/src: Renamed from linux/linux. * linux/dev: Renamed from linux/mach. * linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h, instead of mach/include/linux/autoconf.h. * Makefile.in (all): Target ../linux.o instead of ../linuxdev.o. * linux/dev/drivers/block/genhd.c: Include instead of . * linux/dev/drivers/net/auto_irq.c: Remove unneeded header files, and . * linux/dev/init/main.c: Many i386-dependent codes moved to ... * linux/dev/arch/i386/irq.c: ... here. * linux/dev/arch/i386/setup.c: New file. * linux/dev/arch/i386/linux_emul.h: Likewise. * linux/dev/arch/i386/glue/timer.c: Merged into sched.c. * linux/dev/arch/i386/glue/sched.c: Include instead of , and moved to ... * linux/dev/kernel/sched.c: ... here. * linux/dev/arch/i386/glue/block.c: Include and , instead of i386-dependent header files, and moved to ... * linux/dev/glue/blocl.c: ... here. * linux/dev/arch/i386/glue/net.c: Include and , instead of i386-dependent header files, and moved to ... * linux/dev/glue/net.c: ... here. * linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ... * linux/dev/glue/misc.c: ... here. * linux/dev/arch/i386/glue/kmem.c: Moved to ... * linux/dev/glue/kmem.c: ... here. --- linux/src/drivers/net/ni65.c | 1228 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1228 insertions(+) create mode 100644 linux/src/drivers/net/ni65.c (limited to 'linux/src/drivers/net/ni65.c') diff --git a/linux/src/drivers/net/ni65.c b/linux/src/drivers/net/ni65.c new file mode 100644 index 0000000..75e8914 --- /dev/null +++ b/linux/src/drivers/net/ni65.c @@ -0,0 +1,1228 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#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;itmd_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= 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;itmd_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;irecv_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;itmdbounce[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;irecv_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;itmdhead + 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;irmdhead + i; + rmdp->u.s.status = RCV_OWN; + } + p->tmdnum = p->xmit_queued = 0; + writedatareg(CSR0_STRT | csr0); + + for(i=0;itmdlast) & (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;itmdhead + 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;irmdhead + 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;irmdhead[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;jpriv; + 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;krmdnum + 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;krmdhead[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;itmdhead[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;irmdhead + ((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 + */ + + -- cgit v1.2.3