+++ /dev/null
-/*
- * 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,const 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, unsigned int txqueue);
-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_rx_mode = set_multicast_list,
- .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;
- u8 addr[ETH_ALEN];
- 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);
- }
- break;
- }
- if(i == NUM_CARDS)
- return -ENODEV;
-
- for(j=0;j<6;j++)
- addr[j] = inb(ioaddr+cards[i].addr_offset+j);
- eth_hw_addr_set(dev, addr);
-
- 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,const 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)
- 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
- dev_kfree_skb(p->tmd_skb[i]);
-#endif
- }
-
- for(i=0;i<RMDNUM;i++)
- {
-#ifdef RCV_VIA_SKB
- 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] = (unsigned long)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);
- netif_trans_update(dev); /* 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_consume_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 = netdev_alloc_skb(dev, 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, unsigned int txqueue)
-{
- 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);
- netif_trans_update(dev); /* 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_hw(irq, int, irq, 0);
-module_param_hw(io, int, ioport, 0);
-module_param_hw(dma, int, dma, 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)");
-
-static int __init ni65_init_module(void)
-{
- dev_ni65 = ni65_probe(-1);
- return PTR_ERR_OR_ZERO(dev_ni65);
-}
-module_init(ni65_init_module);
-
-static void __exit ni65_cleanup_module(void)
-{
- unregister_netdev(dev_ni65);
- cleanup_card(dev_ni65);
- free_netdev(dev_ni65);
-}
-module_exit(ni65_cleanup_module);
-#endif /* MODULE */
-
-MODULE_LICENSE("GPL");
projects / platform / kernel / linux-starfive.git / commitdiff