Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/net/ni65.c b/drivers/net/ni65.c
new file mode 100644
index 0000000..925d1df
--- /dev/null
+++ b/drivers/net/ni65.c
@@ -0,0 +1,1277 @@
+/*
+ * ni6510 (am7990 'lance' chip) driver for Linux-net-3
+ * BETAcode v0.71 (96/09/29) for 2.0.0 (or later)
+ * copyrights (c) 1994,1995,1996 by M.Hipp
+ *
+ * This driver can handle the old ni6510 board and the newer ni6510
+ * EtherBlaster. (probably it also works with every full NE2100
+ * compatible card)
+ *
+ * To compile as module, type:
+ * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c
+ * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
+ *
+ * This is an extension to the Linux operating system, and is covered by the
+ * same GNU General Public License that covers the Linux-kernel.
+ *
+ * comments/bugs/suggestions can be sent to:
+ * Michael Hipp
+ * email: hippm@informatik.uni-tuebingen.de
+ *
+ * sources:
+ * some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
+ * and from the original drivers by D.Becker
+ *
+ * known problems:
+ * - on some PCI boards (including my own) the card/board/ISA-bridge has
+ * problems with bus master DMA. This results in lotsa overruns.
+ * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
+ * the XMT and RCV_VIA_SKB option .. this reduces driver performance.
+ * Or just play with your BIOS options to optimize ISA-DMA access.
+ * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
+ * defines -> please report me your experience then
+ * - Harald reported for ASUS SP3G mainboards, that you should use
+ * the 'optimal settings' from the user's manual on page 3-12!
+ *
+ * credits:
+ * thanx to Jason Sullivan for sending me a ni6510 card!
+ * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
+ *
+ * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
+ * average: FTP -> 8384421 bytes received in 8.5 seconds
+ * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
+ * peak: FTP -> 8384421 bytes received in 7.5 seconds
+ * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
+ */
+
+/*
+ * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
+ * 96.Sept.29: virt_to_bus stuff added for new memory modell
+ * 96.April.29: Added Harald Koenig's Patches (MH)
+ * 96.April.13: enhanced error handling .. more tests (MH)
+ * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
+ * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
+ * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
+ * hopefully no more 16MB limit
+ *
+ * 95.Nov.18: multicast tweaked (AC).
+ *
+ * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
+ *
+ * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH)
+ */
+
+#include <linux/kernel.h>
+#include <linux/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;
+ 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;
+ struct net_device_stats stats;
+ 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, struct pt_regs *regs);
+static void ni65_recv_intr(struct net_device *dev,int);
+static void ni65_xmit_intr(struct net_device *dev,int);
+static int ni65_open(struct net_device *dev);
+static int ni65_lance_reinit(struct net_device *dev);
+static void ni65_init_lance(struct priv *p,unsigned char*,int,int);
+static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev);
+static void ni65_timeout(struct net_device *dev);
+static int ni65_close(struct net_device *dev);
+static int ni65_alloc_buffer(struct net_device *dev);
+static void ni65_free_buffer(struct priv *p);
+static struct net_device_stats *ni65_get_stats(struct net_device *);
+static void set_multicast_list(struct net_device *dev);
+
+static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */
+static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */
+
+static int debuglevel = 1;
+
+/*
+ * set 'performance' registers .. we must STOP lance for that
+ */
+static void ni65_set_performance(struct priv *p)
+{
+ writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */
+
+ if( !(cards[p->cardno].config & 0x02) )
+ return;
+
+ outw(80,PORT+L_ADDRREG);
+ if(inw(PORT+L_ADDRREG) != 80)
+ return;
+
+ writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */
+ outw(0,PORT+L_ADDRREG);
+ outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */
+ outw(1,PORT+L_ADDRREG);
+ outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */
+
+ outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */
+}
+
+/*
+ * open interface (up)
+ */
+static int ni65_open(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+ int irqval = request_irq(dev->irq, &ni65_interrupt,0,
+ cards[p->cardno].cardname,dev);
+ if (irqval) {
+ printk(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 = (struct priv *) dev->priv;
+
+ netif_stop_queue(dev);
+
+ outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */
+
+#ifdef XMT_VIA_SKB
+ {
+ int i;
+ for(i=0;i<TMDNUM;i++)
+ {
+ if(p->tmd_skb[i]) {
+ dev_kfree_skb(p->tmd_skb[i]);
+ p->tmd_skb[i] = NULL;
+ }
+ }
+ }
+#endif
+ free_irq(dev->irq,dev);
+ return 0;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->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 int ports[] = {0x360,0x300,0x320,0x340, 0};
+ 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);
+}
+
+/*
+ * 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 = (struct priv *) dev->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 */
+ 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;
+ SET_MODULE_OWNER(dev);
+ dev->open = ni65_open;
+ dev->stop = ni65_close;
+ dev->hard_start_xmit = ni65_send_packet;
+ dev->tx_timeout = ni65_timeout;
+ dev->watchdog_timeo = HZ/2;
+ dev->get_stats = ni65_get_stats;
+ dev->set_multicast_list = set_multicast_list;
+ 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->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(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->priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7);
+ memset((char *) dev->priv,0,sizeof(struct priv));
+ p->self = ptr;
+
+ for(i=0;i<TMDNUM;i++)
+ {
+#ifdef XMT_VIA_SKB
+ p->tmd_skb[i] = NULL;
+#endif
+ p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0);
+ if(!p->tmdbounce[i]) {
+ ni65_free_buffer(p);
+ return -ENOMEM;
+ }
+ }
+
+ for(i=0;i<RMDNUM;i++)
+ {
+#ifdef RCV_VIA_SKB
+ p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1);
+ if(!p->recv_skb[i]) {
+ ni65_free_buffer(p);
+ return -ENOMEM;
+ }
+#else
+ p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0);
+ if(!p->recvbounce[i]) {
+ ni65_free_buffer(p);
+ return -ENOMEM;
+ }
+#endif
+ }
+
+ return 0; /* everything is OK */
+}
+
+/*
+ * free buffers and private struct
+ */
+static void ni65_free_buffer(struct priv *p)
+{
+ int i;
+
+ if(!p)
+ return;
+
+ for(i=0;i<TMDNUM;i++) {
+ if(p->tmdbounce[i])
+ kfree(p->tmdbounce[i]);
+#ifdef XMT_VIA_SKB
+ if(p->tmd_skb[i])
+ dev_kfree_skb(p->tmd_skb[i]);
+#endif
+ }
+
+ for(i=0;i<RMDNUM;i++)
+ {
+#ifdef RCV_VIA_SKB
+ if(p->recv_skb[i])
+ dev_kfree_skb(p->recv_skb[i]);
+#else
+ if(p->recvbounce[i])
+ kfree(p->recvbounce[i]);
+#endif
+ }
+ if(p->self)
+ kfree(p->self);
+}
+
+
+/*
+ * stop and (re)start lance .. e.g after an error
+ */
+static void ni65_stop_start(struct net_device *dev,struct priv *p)
+{
+ int csr0 = CSR0_INEA;
+
+ writedatareg(CSR0_STOP);
+
+ if(debuglevel > 1)
+ printk(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;
+ }
+ else
+ writedatareg(CSR0_STRT | csr0);
+}
+
+/*
+ * init lance (write init-values .. init-buffers) (open-helper)
+ */
+static int ni65_lance_reinit(struct net_device *dev)
+{
+ int i;
+ struct priv *p = (struct priv *) dev->priv;
+ unsigned long flags;
+
+ p->lock = 0;
+ p->xmit_queued = 0;
+
+ flags=claim_dma_lock();
+ disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */
+ set_dma_mode(dev->dma,DMA_MODE_CASCADE);
+ enable_dma(dev->dma);
+ release_dma_lock(flags);
+
+ outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */
+ if( (i=readreg(CSR0) ) != 0x4)
+ {
+ printk(KERN_ERR "%s: can't RESET %s card: %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(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));
+ 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, struct pt_regs * regs)
+{
+ int csr0 = 0;
+ struct net_device *dev = dev_id;
+ struct priv *p;
+ int bcnt = 32;
+
+ p = (struct priv *) dev->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)
+ {
+ struct priv *p = (struct priv *) dev->priv;
+ if(debuglevel > 1)
+ printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0);
+ if(csr0 & CSR0_BABL)
+ p->stats.tx_errors++;
+ if(csr0 & CSR0_MISS) {
+ int i;
+ for(i=0;i<RMDNUM;i++)
+ printk("%02x ",p->rmdhead[i].u.s.status);
+ printk("\n");
+ p->stats.rx_errors++;
+ }
+ if(csr0 & CSR0_MERR) {
+ if(debuglevel > 1)
+ printk(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++)
+ {
+ struct priv *p = (struct priv *) dev->priv;
+ int i,k,num1,num2;
+ for(i=RMDNUM-1;i>0;i--) {
+ num2 = (p->rmdnum + i) & (RMDNUM-1);
+ if(!(p->rmdhead[num2].u.s.status & RCV_OWN))
+ break;
+ }
+
+ if(i) {
+ for(k=0;k<RMDNUM;k++) {
+ num1 = (p->rmdnum + k) & (RMDNUM-1);
+ if(!(p->rmdhead[num1].u.s.status & RCV_OWN))
+ break;
+ }
+ if(!k)
+ break;
+
+ if(debuglevel > 0)
+ {
+ char buf[256],*buf1;
+ int k;
+ buf1 = buf;
+ for(k=0;k<RMDNUM;k++) {
+ sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */
+ buf1 += 3;
+ }
+ *buf1 = 0;
+ printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf);
+ }
+
+ p->rmdnum = num1;
+ ni65_recv_intr(dev,csr0);
+ if((p->rmdhead[num2].u.s.status & RCV_OWN))
+ break; /* ok, we are 'in sync' again */
+ }
+ else
+ break;
+ }
+}
+#endif
+
+ if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) {
+ printk(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 = (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_bytes -= (short)(tmdp->blen);
+ p->stats.tx_packets++;
+ }
+
+#ifdef XMT_VIA_SKB
+ if(p->tmd_skb[p->tmdlast]) {
+ dev_kfree_skb_irq(p->tmd_skb[p->tmdlast]);
+ p->tmd_skb[p->tmdlast] = NULL;
+ }
+#endif
+
+ p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1);
+ if(p->tmdlast == p->tmdnum)
+ p->xmit_queued = 0;
+ }
+ netif_wake_queue(dev);
+}
+
+/*
+ * We have received a packet
+ */
+static void ni65_recv_intr(struct net_device *dev,int csr0)
+{
+ struct rmd *rmdp;
+ int rmdstat,len;
+ int cnt=0;
+ struct priv *p = (struct priv *) dev->priv;
+
+ rmdp = p->rmdhead + p->rmdnum;
+ while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN))
+ {
+ cnt++;
+ if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */
+ {
+ if(!(rmdstat & RCV_ERR)) {
+ if(rmdstat & RCV_START)
+ {
+ p->stats.rx_length_errors++;
+ printk(KERN_ERR "%s: recv, packet too long: %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) isa_virt_to_bus(skb->data);
+ skb = skb1;
+ skb_trim(skb,len);
+ }
+#else
+ skb_put(skb,len);
+ eth_copy_and_sum(skb, (unsigned char *) p->recvbounce[p->rmdnum],len,0);
+#endif
+ p->stats.rx_packets++;
+ p->stats.rx_bytes += len;
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ }
+ else
+ {
+ printk(KERN_ERR "%s: can't alloc new sk_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 void ni65_timeout(struct net_device *dev)
+{
+ int i;
+ struct priv *p = (struct priv *) dev->priv;
+
+ printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name);
+ for(i=0;i<TMDNUM;i++)
+ printk("%02x ",p->tmdhead[i].u.s.status);
+ printk("\n");
+ ni65_lance_reinit(dev);
+ dev->trans_start = jiffies;
+ netif_wake_queue(dev);
+}
+
+/*
+ * Send a packet
+ */
+
+static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+
+ netif_stop_queue(dev);
+
+ if (test_and_set_bit(0, (void*)&p->lock)) {
+ printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
+ return 1;
+ }
+
+ {
+ short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+ struct tmd *tmdp;
+ unsigned 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);
+ 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;
+ dev->trans_start = jiffies;
+
+ spin_unlock_irqrestore(&p->ring_lock, flags);
+ }
+
+ return 0;
+}
+
+static struct net_device_stats *ni65_get_stats(struct net_device *dev)
+{
+
+#if 0
+ int i;
+ struct priv *p = (struct priv *) dev->priv;
+ for(i=0;i<RMDNUM;i++)
+ {
+ struct rmd *rmdp = p->rmdhead + ((p->rmdnum + i) & (RMDNUM-1));
+ printk("%02x ",rmdp->u.s.status);
+ }
+ printk("\n");
+#endif
+
+ return &((struct priv *) dev->priv)->stats;
+}
+
+static void set_multicast_list(struct net_device *dev)
+{
+ if(!ni65_lance_reinit(dev))
+ printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name);
+ netif_wake_queue(dev);
+}
+
+#ifdef MODULE
+static struct net_device *dev_ni65;
+
+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_module(void)
+{
+ dev_ni65 = ni65_probe(-1);
+ return IS_ERR(dev_ni65) ? PTR_ERR(dev_ni65) : 0;
+}
+
+void cleanup_module(void)
+{
+ unregister_netdev(dev_ni65);
+ cleanup_card(dev_ni65);
+ free_netdev(dev_ni65);
+}
+#endif /* MODULE */
+
+MODULE_LICENSE("GPL");
+
+/*
+ * END of ni65.c
+ */