diff options
Diffstat (limited to 'drivers/net/ni65.c')
| -rw-r--r-- | drivers/net/ni65.c | 1254 |
1 files changed, 0 insertions, 1254 deletions
diff --git a/drivers/net/ni65.c b/drivers/net/ni65.c deleted file mode 100644 index c75ae85eb918..000000000000 --- a/drivers/net/ni65.c +++ /dev/null @@ -1,1254 +0,0 @@ -/* - * 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) - * - * 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/string.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 <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/module.h> -#include <linux/bitops.h> - -#include <asm/io.h> -#include <asm/dma.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 long config; -} cards[] = { - { - .id0 = NI65_ID0, - .id1 = NI65_ID1, - .id_offset = 0x0e, - .total_size = 0x10, - .cmd_offset = 0x0, - .addr_offset = 0x8, - .vendor_id = ni_vendor, - .cardname = "ni6510", - .config = 0x1, - }, - { - .id0 = NI65_EB_ID0, - .id1 = NI65_EB_ID1, - .id_offset = 0x0e, - .total_size = 0x18, - .cmd_offset = 0x10, - .addr_offset = 0x0, - .vendor_id = ni_vendor, - .cardname = "ni6510 EtherBlaster", - .config = 0x2, - }, - { - .id0 = NE2100_ID0, - .id1 = NE2100_ID1, - .id_offset = 0x0e, - .total_size = 0x18, - .cmd_offset = 0x10, - .addr_offset = 0x0, - .vendor_id = NULL, - .cardname = "generic NE2100", - .config = 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; - - void *self; - int cmdr_addr; - int cardno; - int features; - spinlock_t ring_lock; -}; - -static int ni65_probe1(struct net_device *dev,int); -static irqreturn_t ni65_interrupt(int irq, void * dev_id); -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 netdev_tx_t 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 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 = dev->ml_priv; - int irqval = request_irq(dev->irq, ni65_interrupt,0, - cards[p->cardno].cardname,dev); - if (irqval) { - printk(KERN_ERR "%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); - return 0; - } - else - { - free_irq(dev->irq,dev); - return -EAGAIN; - } -} - -/* - * close interface (down) - */ -static int ni65_close(struct net_device *dev) -{ - struct priv *p = dev->ml_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); - return 0; -} - -static void cleanup_card(struct net_device *dev) -{ - struct priv *p = dev->ml_priv; - disable_dma(dev->dma); - free_dma(dev->dma); - release_region(dev->base_addr, cards[p->cardno].total_size); - ni65_free_buffer(p); -} - -/* set: io,irq,dma or set it when calling insmod */ -static int irq; -static int io; -static int dma; - -/* - * Probe The Card (not the lance-chip) - */ -struct net_device * __init ni65_probe(int unit) -{ - struct net_device *dev = alloc_etherdev(0); - static const int ports[] = { 0x360, 0x300, 0x320, 0x340, 0 }; - const int *port; - int err = 0; - - if (!dev) - return ERR_PTR(-ENOMEM); - - if (unit >= 0) { - sprintf(dev->name, "eth%d", unit); - netdev_boot_setup_check(dev); - irq = dev->irq; - dma = dev->dma; - } else { - dev->base_addr = io; - } - - if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ - err = ni65_probe1(dev, dev->base_addr); - } else if (dev->base_addr > 0) { /* Don't probe at all. */ - err = -ENXIO; - } else { - for (port = ports; *port && ni65_probe1(dev, *port); port++) - ; - if (!*port) - err = -ENODEV; - } - if (err) - goto out; - - err = register_netdev(dev); - if (err) - goto out1; - return dev; -out1: - cleanup_card(dev); -out: - free_netdev(dev); - return ERR_PTR(err); -} - -static const struct net_device_ops ni65_netdev_ops = { - .ndo_open = ni65_open, - .ndo_stop = ni65_close, - .ndo_start_xmit = ni65_send_packet, - .ndo_tx_timeout = ni65_timeout, - .ndo_set_multicast_list = set_multicast_list, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -/* - * 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; - - dev->irq = irq; - dev->dma = dma; - - for(i=0;i<NUM_CARDS;i++) { - if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) - 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) { - release_region(ioaddr, cards[i].total_size); - 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]) { - release_region(ioaddr, cards[i].total_size); - 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) { - release_region(ioaddr, cards[i].total_size); - return j; - } - p = dev->ml_priv; - p->cmdr_addr = ioaddr + cards[i].cmd_offset; - p->cardno = i; - spin_lock_init(&p->ring_lock); - - printk(KERN_INFO "%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("failed.\n"); - printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); - ni65_free_buffer(p); - release_region(ioaddr, cards[p->cardno].total_size); - 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 */ - unsigned long 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("failed.\n"); - printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); - ni65_free_buffer(p); - release_region(ioaddr, cards[p->cardno].total_size); - return -EAGAIN; - } - dev->dma = dmatab[i]; - printk("DMA %d (autodetected), ",dev->dma); - } - else - printk("DMA %d (assigned), ",dev->dma); - - if(dev->irq < 2) - { - unsigned long irq_mask; - - ni65_init_lance(p,dev->dev_addr,0,0); - irq_mask = probe_irq_on(); - writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ - msleep(20); - dev->irq = probe_irq_off(irq_mask); - if(!dev->irq) - { - printk("Failed to detect IRQ line!\n"); - ni65_free_buffer(p); - release_region(ioaddr, cards[p->cardno].total_size); - 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(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); - ni65_free_buffer(p); - release_region(ioaddr, cards[p->cardno].total_size); - return -EAGAIN; - } - - dev->base_addr = ioaddr; - dev->netdev_ops = &ni65_netdev_ops; - dev->watchdog_timeo = HZ/2; - - 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) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; - p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; - writereg(0,CSR3); /* busmaster/no word-swap */ - pib = (u32) isa_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(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); - return NULL; - } - 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(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); - return NULL; - } - } - if( (u32) virt_to_phys(ptr+size) > 0x1000000) { - printk(KERN_WARNING "%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->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); - memset((char *)p, 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++) { - 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 - kfree(p->recvbounce[i]); -#endif - } - 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(KERN_DEBUG "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) isa_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) isa_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; /* prevent tx timeout */ - } - 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 = dev->ml_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: %04x\n",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) isa_virt_to_bus(p->recv_skb[i]->data); -#else - rmdp->u.buffer = (u32) isa_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 (netdev_mc_count(dev) || 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)); - flags=claim_dma_lock(); - disable_dma(dev->dma); - release_dma_lock(flags); - return 0; /* ->Error */ -} - -/* - * interrupt handler - */ -static irqreturn_t ni65_interrupt(int irq, void * dev_id) -{ - int csr0 = 0; - struct net_device *dev = dev_id; - struct priv *p; - int bcnt = 32; - - p = dev->ml_priv; - - spin_lock(&p->ring_lock); - - 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) - { - if(debuglevel > 1) - printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); - if(csr0 & CSR0_BABL) - dev->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"); - dev->stats.rx_errors++; - } - if(csr0 & CSR0_MERR) { - if(debuglevel > 1) - printk(KERN_ERR "%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++) - { - int i, 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) { - int k, num1; - 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; - 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(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); - ni65_stop_start(dev,p); - } - else - writedatareg(CSR0_INEA); - - spin_unlock(&p->ring_lock); - return IRQ_HANDLED; -} - -/* - * 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 = dev->ml_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) - dev->stats.tx_aborted_errors++; - if(tmdp->status2 & XMIT_LCAR) - dev->stats.tx_carrier_errors++; - if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { - /* this stops the xmitter */ - dev->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 */ - dev->stats.tx_errors++; - tmdp->status2 = 0; - } - else { - dev->stats.tx_bytes -= (short)(tmdp->blen); - dev->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 = dev->ml_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) - { - dev->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) - dev->stats.rx_frame_errors++; - if(rmdstat & RCV_OFLO) - dev->stats.rx_over_errors++; - if(rmdstat & RCV_CRC) - dev->stats.rx_crc_errors++; - if(rmdstat & RCV_BUF_ERR) - dev->stats.rx_fifo_errors++; - } - if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ - dev->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); -#ifdef RCV_VIA_SKB - if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { - skb_put(skb,len); - skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); - } - 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) isa_virt_to_bus(skb->data); - skb = skb1; - skb_trim(skb,len); - } -#else - skb_put(skb,len); - skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); -#endif - dev->stats.rx_packets++; - dev->stats.rx_bytes += len; - skb->protocol=eth_type_trans(skb,dev); - netif_rx(skb); - } - else - { - printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); - dev->stats.rx_dropped++; - } - } - else { - printk(KERN_INFO "%s: received runt packet\n",dev->name); - dev->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 = dev->ml_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; /* prevent tx timeout */ - netif_wake_queue(dev); -} - -/* - * Send a packet - */ - -static netdev_tx_t ni65_send_packet(struct sk_buff *skb, - struct net_device *dev) -{ - struct priv *p = dev->ml_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 NETDEV_TX_BUSY; - } - - { - short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; - struct tmd *tmdp; - unsigned long flags; - -#ifdef XMT_VIA_SKB - if( (unsigned long) (skb->data + skb->len) > 0x1000000) { -#endif - - skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], - skb->len > T_BUF_SIZE ? T_BUF_SIZE : - skb->len); - if (len > skb->len) - memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); - dev_kfree_skb (skb); - - spin_lock_irqsave(&p->ring_lock, flags); - tmdp = p->tmdhead + p->tmdnum; - tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); - p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); - -#ifdef XMT_VIA_SKB - } - else { - spin_lock_irqsave(&p->ring_lock, flags); - - tmdp = p->tmdhead + p->tmdnum; - tmdp->u.buffer = (u32) isa_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; - - spin_unlock_irqrestore(&p->ring_lock, flags); - } - - return NETDEV_TX_OK; -} - -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; - -module_param(irq, int, 0); -module_param(io, int, 0); -module_param(dma, int, 0); -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 init_module(void) -{ - dev_ni65 = ni65_probe(-1); - return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0; -} - -void __exit cleanup_module(void) -{ - unregister_netdev(dev_ni65); - cleanup_card(dev_ni65); - free_netdev(dev_ni65); -} -#endif /* MODULE */ - -MODULE_LICENSE("GPL"); |