| /* |
| * net-3-driver for the NI5210 card (i82586 Ethernet chip) |
| * |
| * This is an extension to the Linux operating system, and is covered by the |
| * same GNU General Public License that covers that work. |
| * |
| * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later) |
| * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de) |
| * [feel free to mail ....] |
| * |
| * when using as module: (no autoprobing!) |
| * run with e.g: |
| * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000 |
| * |
| * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!. |
| * |
| * If you find a bug, please report me: |
| * The kernel panic output and any kmsg from the ni52 driver |
| * the ni5210-driver-version and the linux-kernel version |
| * how many shared memory (memsize) on the netcard, |
| * bootprom: yes/no, base_addr, mem_start |
| * maybe the ni5210-card revision and the i82586 version |
| * |
| * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340 |
| * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000, |
| * 0xd8000,0xcc000,0xce000,0xda000,0xdc000 |
| * |
| * sources: |
| * skeleton.c from Donald Becker |
| * |
| * I have also done a look in the following sources: (mail me if you need them) |
| * crynwr-packet-driver by Russ Nelson |
| * Garret A. Wollman's (fourth) i82586-driver for BSD |
| * (before getting an i82596 (yes 596 not 586) manual, the existing drivers |
| * helped me a lot to understand this tricky chip.) |
| * |
| * Known Problems: |
| * The internal sysbus seems to be slow. So we often lose packets because of |
| * overruns while receiving from a fast remote host. |
| * This can slow down TCP connections. Maybe the newer ni5210 cards are |
| * better. My experience is, that if a machine sends with more than about |
| * 500-600K/s the fifo/sysbus overflows. |
| * |
| * IMPORTANT NOTE: |
| * On fast networks, it's a (very) good idea to have 16K shared memory. With |
| * 8K, we can store only 4 receive frames, so it can (easily) happen that a |
| * remote machine 'overruns' our system. |
| * |
| * Known i82586/card problems (I'm sure, there are many more!): |
| * Running the NOP-mode, the i82586 sometimes seems to forget to report |
| * every xmit-interrupt until we restart the CU. |
| * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit |
| * in the RBD-Struct which indicates an end of the RBD queue. |
| * Instead, the RU fetches another (randomly selected and |
| * usually used) RBD and begins to fill it. (Maybe, this happens only if |
| * the last buffer from the previous RFD fits exact into the queue and |
| * the next RFD can't fetch an initial RBD. Anyone knows more? ) |
| * |
| * results from ftp performance tests with Linux 1.2.5 |
| * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s) |
| * sending in NOP-mode: peak performance up to 530K/s (but better don't |
| * run this mode) |
| */ |
| |
| /* |
| * 29.Sept.96: virt_to_bus changes for new memory scheme |
| * 19.Feb.96: more Mcast changes, module support (MH) |
| * |
| * 18.Nov.95: Mcast changes (AC). |
| * |
| * 23.April.95: fixed(?) receiving problems by configuring a RFD more |
| * than the number of RBD's. Can maybe cause other problems. |
| * 18.April.95: Added MODULE support (MH) |
| * 17.April.95: MC related changes in init586() and set_multicast_list(). |
| * removed use of 'jiffies' in init586() (MH) |
| * |
| * 19.Sep.94: Added Multicast support (not tested yet) (MH) |
| * |
| * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling. |
| * Now, every RFD has exact one RBD. (MH) |
| * |
| * 14.Sep.94: added promiscuous mode, a few cleanups (MH) |
| * |
| * 19.Aug.94: changed request_irq() parameter (MH) |
| * |
| * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH) |
| * |
| * 19.July.94: lotsa cleanups .. (MH) |
| * |
| * 17.July.94: some patches ... verified to run with 1.1.29 (MH) |
| * |
| * 4.July.94: patches for Linux 1.1.24 (MH) |
| * |
| * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH) |
| * |
| * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, |
| * too (MH) |
| * |
| * < 30.Sep.93: first versions |
| */ |
| |
| static int debuglevel; /* debug-printk 0: off 1: a few 2: more */ |
| static int automatic_resume; /* experimental .. better should be zero */ |
| static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */ |
| static int fifo = 0x8; /* don't change */ |
| |
| #include <linux/module.h> |
| #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/bitops.h> |
| #include <asm/io.h> |
| |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| |
| #include "ni52.h" |
| |
| #define DRV_NAME "ni52" |
| |
| #define DEBUG /* debug on */ |
| #define SYSBUSVAL 1 /* 8 Bit */ |
| |
| #define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); } |
| #define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); } |
| #define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); } |
| #define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); } |
| |
| #define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16))) |
| #define make24(ptr32) ((char __iomem *)(ptr32)) - p->base |
| #define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\ |
| - p->memtop)) |
| |
| /******************* how to calculate the buffers ***************************** |
| |
| * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works |
| * --------------- in a different (more stable?) mode. Only in this mode it's |
| * possible to configure the driver with 'NO_NOPCOMMANDS' |
| |
| sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; |
| sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT |
| sizeof(rfd) = 24; sizeof(rbd) = 12; |
| sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; |
| sizeof(nop_cmd) = 8; |
| |
| * if you don't know the driver, better do not change these values: */ |
| |
| #define RECV_BUFF_SIZE 1524 /* slightly oversized */ |
| #define XMIT_BUFF_SIZE 1524 /* slightly oversized */ |
| #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */ |
| #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */ |
| #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */ |
| #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ |
| |
| /**************************************************************************/ |
| |
| |
| #define NI52_TOTAL_SIZE 16 |
| #define NI52_ADDR0 0x02 |
| #define NI52_ADDR1 0x07 |
| #define NI52_ADDR2 0x01 |
| |
| static int ni52_probe1(struct net_device *dev, int ioaddr); |
| static irqreturn_t ni52_interrupt(int irq, void *dev_id); |
| static int ni52_open(struct net_device *dev); |
| static int ni52_close(struct net_device *dev); |
| static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *); |
| static struct net_device_stats *ni52_get_stats(struct net_device *dev); |
| static void set_multicast_list(struct net_device *dev); |
| static void ni52_timeout(struct net_device *dev); |
| |
| /* helper-functions */ |
| static int init586(struct net_device *dev); |
| static int check586(struct net_device *dev, unsigned size); |
| static void alloc586(struct net_device *dev); |
| static void startrecv586(struct net_device *dev); |
| static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr); |
| static void ni52_rcv_int(struct net_device *dev); |
| static void ni52_xmt_int(struct net_device *dev); |
| static void ni52_rnr_int(struct net_device *dev); |
| |
| struct priv { |
| struct net_device_stats stats; |
| char __iomem *base; |
| char __iomem *mapped; |
| char __iomem *memtop; |
| spinlock_t spinlock; |
| int reset; |
| struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first; |
| struct scp_struct __iomem *scp; |
| struct iscp_struct __iomem *iscp; |
| struct scb_struct __iomem *scb; |
| struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS]; |
| #if (NUM_XMIT_BUFFS == 1) |
| struct transmit_cmd_struct __iomem *xmit_cmds[2]; |
| struct nop_cmd_struct __iomem *nop_cmds[2]; |
| #else |
| struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS]; |
| struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS]; |
| #endif |
| int nop_point, num_recv_buffs; |
| char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS]; |
| int xmit_count, xmit_last; |
| }; |
| |
| /* wait for command with timeout: */ |
| static void wait_for_scb_cmd(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| int i; |
| for (i = 0; i < 16384; i++) { |
| if (readb(&p->scb->cmd_cuc) == 0) |
| break; |
| udelay(4); |
| if (i == 16383) { |
| printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n", |
| dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus)); |
| if (!p->reset) { |
| p->reset = 1; |
| ni_reset586(); |
| } |
| } |
| } |
| } |
| |
| static void wait_for_scb_cmd_ruc(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| int i; |
| for (i = 0; i < 16384; i++) { |
| if (readb(&p->scb->cmd_ruc) == 0) |
| break; |
| udelay(4); |
| if (i == 16383) { |
| printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n", |
| dev->name, readb(&p->scb->cmd_ruc), |
| readb(&p->scb->rus)); |
| if (!p->reset) { |
| p->reset = 1; |
| ni_reset586(); |
| } |
| } |
| } |
| } |
| |
| static void wait_for_stat_compl(void __iomem *p) |
| { |
| struct nop_cmd_struct __iomem *addr = p; |
| int i; |
| for (i = 0; i < 32767; i++) { |
| if (readw(&((addr)->cmd_status)) & STAT_COMPL) |
| break; |
| udelay(32); |
| } |
| } |
| |
| /********************************************** |
| * close device |
| */ |
| static int ni52_close(struct net_device *dev) |
| { |
| free_irq(dev->irq, dev); |
| ni_reset586(); /* the hard way to stop the receiver */ |
| netif_stop_queue(dev); |
| return 0; |
| } |
| |
| /********************************************** |
| * open device |
| */ |
| static int ni52_open(struct net_device *dev) |
| { |
| int ret; |
| |
| ni_disint(); |
| alloc586(dev); |
| init586(dev); |
| startrecv586(dev); |
| ni_enaint(); |
| |
| ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev); |
| if (ret) { |
| ni_reset586(); |
| return ret; |
| } |
| netif_start_queue(dev); |
| return 0; /* most done by init */ |
| } |
| |
| static int check_iscp(struct net_device *dev, void __iomem *addr) |
| { |
| struct iscp_struct __iomem *iscp = addr; |
| struct priv *p = netdev_priv(dev); |
| memset_io(iscp, 0, sizeof(struct iscp_struct)); |
| |
| writel(make24(iscp), &p->scp->iscp); |
| writeb(1, &iscp->busy); |
| |
| ni_reset586(); |
| ni_attn586(); |
| mdelay(32); /* wait a while... */ |
| /* i82586 clears 'busy' after successful init */ |
| if (readb(&iscp->busy)) |
| return 0; |
| return 1; |
| } |
| |
| /********************************************** |
| * Check to see if there's an 82586 out there. |
| */ |
| static int check586(struct net_device *dev, unsigned size) |
| { |
| struct priv *p = netdev_priv(dev); |
| int i; |
| |
| p->mapped = ioremap(dev->mem_start, size); |
| if (!p->mapped) |
| return 0; |
| |
| p->base = p->mapped + size - 0x01000000; |
| p->memtop = p->mapped + size; |
| p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS); |
| p->scb = (struct scb_struct __iomem *) p->mapped; |
| p->iscp = (struct iscp_struct __iomem *)p->scp - 1; |
| memset_io(p->scp, 0, sizeof(struct scp_struct)); |
| for (i = 0; i < sizeof(struct scp_struct); i++) |
| /* memory was writeable? */ |
| if (readb((char __iomem *)p->scp + i)) |
| goto Enodev; |
| writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */ |
| if (readb(&p->scp->sysbus) != SYSBUSVAL) |
| goto Enodev; |
| |
| if (!check_iscp(dev, p->mapped)) |
| goto Enodev; |
| if (!check_iscp(dev, p->iscp)) |
| goto Enodev; |
| return 1; |
| Enodev: |
| iounmap(p->mapped); |
| return 0; |
| } |
| |
| /****************************************************************** |
| * set iscp at the right place, called by ni52_probe1 and open586. |
| */ |
| static void alloc586(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| |
| ni_reset586(); |
| mdelay(32); |
| |
| memset_io(p->iscp, 0, sizeof(struct iscp_struct)); |
| memset_io(p->scp , 0, sizeof(struct scp_struct)); |
| |
| writel(make24(p->iscp), &p->scp->iscp); |
| writeb(SYSBUSVAL, &p->scp->sysbus); |
| writew(make16(p->scb), &p->iscp->scb_offset); |
| |
| writeb(1, &p->iscp->busy); |
| ni_reset586(); |
| ni_attn586(); |
| |
| mdelay(32); |
| |
| if (readb(&p->iscp->busy)) |
| printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name); |
| |
| p->reset = 0; |
| |
| memset_io(p->scb, 0, sizeof(struct scb_struct)); |
| } |
| |
| /* set: io,irq,memstart,memend or set it when calling insmod */ |
| static int irq = 9; |
| static int io = 0x300; |
| static long memstart; /* e.g 0xd0000 */ |
| static long memend; /* e.g 0xd4000 */ |
| |
| /********************************************** |
| * probe the ni5210-card |
| */ |
| struct net_device * __init ni52_probe(int unit) |
| { |
| struct net_device *dev = alloc_etherdev(sizeof(struct priv)); |
| static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0}; |
| struct priv *p; |
| int *port; |
| int err = 0; |
| |
| if (!dev) |
| return ERR_PTR(-ENOMEM); |
| |
| p = netdev_priv(dev); |
| |
| if (unit >= 0) { |
| sprintf(dev->name, "eth%d", unit); |
| netdev_boot_setup_check(dev); |
| io = dev->base_addr; |
| irq = dev->irq; |
| memstart = dev->mem_start; |
| memend = dev->mem_end; |
| } |
| |
| if (io > 0x1ff) { /* Check a single specified location. */ |
| err = ni52_probe1(dev, io); |
| } else if (io > 0) { /* Don't probe at all. */ |
| err = -ENXIO; |
| } else { |
| for (port = ports; *port && ni52_probe1(dev, *port) ; port++) |
| ; |
| if (*port) |
| goto got_it; |
| #ifdef FULL_IO_PROBE |
| for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8) |
| ; |
| if (io < 0x400) |
| goto got_it; |
| #endif |
| err = -ENODEV; |
| } |
| if (err) |
| goto out; |
| got_it: |
| err = register_netdev(dev); |
| if (err) |
| goto out1; |
| return dev; |
| out1: |
| iounmap(p->mapped); |
| release_region(dev->base_addr, NI52_TOTAL_SIZE); |
| out: |
| free_netdev(dev); |
| return ERR_PTR(err); |
| } |
| |
| static const struct net_device_ops ni52_netdev_ops = { |
| .ndo_open = ni52_open, |
| .ndo_stop = ni52_close, |
| .ndo_get_stats = ni52_get_stats, |
| .ndo_tx_timeout = ni52_timeout, |
| .ndo_start_xmit = ni52_send_packet, |
| .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, |
| }; |
| |
| static int __init ni52_probe1(struct net_device *dev, int ioaddr) |
| { |
| int i, size, retval; |
| struct priv *priv = netdev_priv(dev); |
| |
| dev->base_addr = ioaddr; |
| dev->irq = irq; |
| dev->mem_start = memstart; |
| dev->mem_end = memend; |
| |
| spin_lock_init(&priv->spinlock); |
| |
| if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME)) |
| return -EBUSY; |
| |
| if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) || |
| !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) { |
| retval = -ENODEV; |
| goto out; |
| } |
| |
| for (i = 0; i < ETH_ALEN; i++) |
| dev->dev_addr[i] = inb(dev->base_addr+i); |
| |
| if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 || |
| dev->dev_addr[2] != NI52_ADDR2) { |
| retval = -ENODEV; |
| goto out; |
| } |
| |
| printk(KERN_INFO "%s: NI5210 found at %#3lx, ", |
| dev->name, dev->base_addr); |
| |
| /* |
| * check (or search) IO-Memory, 8K and 16K |
| */ |
| #ifdef MODULE |
| size = dev->mem_end - dev->mem_start; |
| if (size != 0x2000 && size != 0x4000) { |
| printk("\n"); |
| printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size); |
| retval = -ENODEV; |
| goto out; |
| } |
| if (!check586(dev, size)) { |
| printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size); |
| retval = -ENODEV; |
| goto out; |
| } |
| #else |
| if (dev->mem_start != 0) { |
| /* no auto-mem-probe */ |
| size = 0x4000; /* check for 16K mem */ |
| if (!check586(dev, size)) { |
| size = 0x2000; /* check for 8K mem */ |
| if (!check586(dev, size)) { |
| printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start); |
| retval = -ENODEV; |
| goto out; |
| } |
| } |
| } else { |
| static const unsigned long memaddrs[] = { |
| 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000, |
| 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0 |
| }; |
| for (i = 0;; i++) { |
| if (!memaddrs[i]) { |
| printk(KERN_ERR "?memprobe, Can't find io-memory!\n"); |
| retval = -ENODEV; |
| goto out; |
| } |
| dev->mem_start = memaddrs[i]; |
| size = 0x2000; /* check for 8K mem */ |
| if (check586(dev, size)) |
| /* 8K-check */ |
| break; |
| size = 0x4000; /* check for 16K mem */ |
| if (check586(dev, size)) |
| /* 16K-check */ |
| break; |
| } |
| } |
| /* set mem_end showed by 'ifconfig' */ |
| dev->mem_end = dev->mem_start + size; |
| #endif |
| |
| alloc586(dev); |
| |
| /* set number of receive-buffs according to memsize */ |
| if (size == 0x2000) |
| priv->num_recv_buffs = NUM_RECV_BUFFS_8; |
| else |
| priv->num_recv_buffs = NUM_RECV_BUFFS_16; |
| |
| printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ", |
| dev->mem_start, size); |
| |
| if (dev->irq < 2) { |
| unsigned long irq_mask; |
| |
| irq_mask = probe_irq_on(); |
| ni_reset586(); |
| ni_attn586(); |
| |
| mdelay(20); |
| dev->irq = probe_irq_off(irq_mask); |
| if (!dev->irq) { |
| printk("?autoirq, Failed to detect IRQ line!\n"); |
| retval = -EAGAIN; |
| iounmap(priv->mapped); |
| goto out; |
| } |
| printk("IRQ %d (autodetected).\n", dev->irq); |
| } else { |
| if (dev->irq == 2) |
| dev->irq = 9; |
| printk("IRQ %d (assigned and not checked!).\n", dev->irq); |
| } |
| |
| dev->netdev_ops = &ni52_netdev_ops; |
| dev->watchdog_timeo = HZ/20; |
| |
| return 0; |
| out: |
| release_region(ioaddr, NI52_TOTAL_SIZE); |
| return retval; |
| } |
| |
| /********************************************** |
| * init the chip (ni52-interrupt should be disabled?!) |
| * needs a correct 'allocated' memory |
| */ |
| |
| static int init586(struct net_device *dev) |
| { |
| void __iomem *ptr; |
| int i, result = 0; |
| struct priv *p = netdev_priv(dev); |
| struct configure_cmd_struct __iomem *cfg_cmd; |
| struct iasetup_cmd_struct __iomem *ias_cmd; |
| struct tdr_cmd_struct __iomem *tdr_cmd; |
| struct mcsetup_cmd_struct __iomem *mc_cmd; |
| struct dev_mc_list *dmi = dev->mc_list; |
| int num_addrs = netdev_mc_count(dev); |
| |
| ptr = p->scb + 1; |
| |
| cfg_cmd = ptr; /* configure-command */ |
| writew(0, &cfg_cmd->cmd_status); |
| writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd); |
| writew(0xFFFF, &cfg_cmd->cmd_link); |
| |
| /* number of cfg bytes */ |
| writeb(0x0a, &cfg_cmd->byte_cnt); |
| /* fifo-limit (8=tx:32/rx:64) */ |
| writeb(fifo, &cfg_cmd->fifo); |
| /* hold or discard bad recv frames (bit 7) */ |
| writeb(0x40, &cfg_cmd->sav_bf); |
| /* addr_len |!src_insert |pre-len |loopback */ |
| writeb(0x2e, &cfg_cmd->adr_len); |
| writeb(0x00, &cfg_cmd->priority); |
| writeb(0x60, &cfg_cmd->ifs); |
| writeb(0x00, &cfg_cmd->time_low); |
| writeb(0xf2, &cfg_cmd->time_high); |
| writeb(0x00, &cfg_cmd->promisc); |
| if (dev->flags & IFF_ALLMULTI) { |
| int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6; |
| if (num_addrs > len) { |
| printk(KERN_ERR "%s: switching to promisc. mode\n", |
| dev->name); |
| writeb(0x01, &cfg_cmd->promisc); |
| } |
| } |
| if (dev->flags & IFF_PROMISC) |
| writeb(0x01, &cfg_cmd->promisc); |
| writeb(0x00, &cfg_cmd->carr_coll); |
| writew(make16(cfg_cmd), &p->scb->cbl_offset); |
| writeb(0, &p->scb->cmd_ruc); |
| |
| writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
| ni_attn586(); |
| |
| wait_for_stat_compl(cfg_cmd); |
| |
| if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
| (STAT_COMPL|STAT_OK)) { |
| printk(KERN_ERR "%s: configure command failed: %x\n", |
| dev->name, readw(&cfg_cmd->cmd_status)); |
| return 1; |
| } |
| |
| /* |
| * individual address setup |
| */ |
| |
| ias_cmd = ptr; |
| |
| writew(0, &ias_cmd->cmd_status); |
| writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd); |
| writew(0xffff, &ias_cmd->cmd_link); |
| |
| memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN); |
| |
| writew(make16(ias_cmd), &p->scb->cbl_offset); |
| |
| writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
| ni_attn586(); |
| |
| wait_for_stat_compl(ias_cmd); |
| |
| if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != |
| (STAT_OK|STAT_COMPL)) { |
| printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status)); |
| return 1; |
| } |
| |
| /* |
| * TDR, wire check .. e.g. no resistor e.t.c |
| */ |
| |
| tdr_cmd = ptr; |
| |
| writew(0, &tdr_cmd->cmd_status); |
| writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd); |
| writew(0xffff, &tdr_cmd->cmd_link); |
| writew(0, &tdr_cmd->status); |
| |
| writew(make16(tdr_cmd), &p->scb->cbl_offset); |
| writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */ |
| ni_attn586(); |
| |
| wait_for_stat_compl(tdr_cmd); |
| |
| if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL)) |
| printk(KERN_ERR "%s: Problems while running the TDR.\n", |
| dev->name); |
| else { |
| udelay(16); |
| result = readw(&tdr_cmd->status); |
| writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); |
| ni_attn586(); /* ack the interrupts */ |
| |
| if (result & TDR_LNK_OK) |
| ; |
| else if (result & TDR_XCVR_PRB) |
| printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n", |
| dev->name); |
| else if (result & TDR_ET_OPN) |
| printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n", |
| dev->name, result & TDR_TIMEMASK); |
| else if (result & TDR_ET_SRT) { |
| /* time == 0 -> strange :-) */ |
| if (result & TDR_TIMEMASK) |
| printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n", |
| dev->name, result & TDR_TIMEMASK); |
| } else |
| printk(KERN_ERR "%s: TDR: Unknown status %04x\n", |
| dev->name, result); |
| } |
| |
| /* |
| * Multicast setup |
| */ |
| if (num_addrs && !(dev->flags & IFF_PROMISC)) { |
| mc_cmd = ptr; |
| writew(0, &mc_cmd->cmd_status); |
| writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd); |
| writew(0xffff, &mc_cmd->cmd_link); |
| writew(num_addrs * 6, &mc_cmd->mc_cnt); |
| |
| for (i = 0; i < num_addrs; i++, dmi = dmi->next) |
| memcpy_toio(mc_cmd->mc_list[i], |
| dmi->dmi_addr, 6); |
| |
| writew(make16(mc_cmd), &p->scb->cbl_offset); |
| writeb(CUC_START, &p->scb->cmd_cuc); |
| ni_attn586(); |
| |
| wait_for_stat_compl(mc_cmd); |
| |
| if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) |
| != (STAT_COMPL|STAT_OK)) |
| printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name); |
| } |
| |
| /* |
| * alloc nop/xmit-cmds |
| */ |
| #if (NUM_XMIT_BUFFS == 1) |
| for (i = 0; i < 2; i++) { |
| p->nop_cmds[i] = ptr; |
| writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
| writew(0, &p->nop_cmds[i]->cmd_status); |
| writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); |
| ptr = ptr + sizeof(struct nop_cmd_struct); |
| } |
| #else |
| for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
| p->nop_cmds[i] = ptr; |
| writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd); |
| writew(0, &p->nop_cmds[i]->cmd_status); |
| writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link); |
| ptr = ptr + sizeof(struct nop_cmd_struct); |
| } |
| #endif |
| |
| ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */ |
| |
| /* |
| * alloc xmit-buffs / init xmit_cmds |
| */ |
| for (i = 0; i < NUM_XMIT_BUFFS; i++) { |
| /* Transmit cmd/buff 0 */ |
| p->xmit_cmds[i] = ptr; |
| ptr = ptr + sizeof(struct transmit_cmd_struct); |
| p->xmit_cbuffs[i] = ptr; /* char-buffs */ |
| ptr = ptr + XMIT_BUFF_SIZE; |
| p->xmit_buffs[i] = ptr; /* TBD */ |
| ptr = ptr + sizeof(struct tbd_struct); |
| if ((void __iomem *)ptr > (void __iomem *)p->iscp) { |
| printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n", |
| dev->name); |
| return 1; |
| } |
| memset_io(p->xmit_cmds[i], 0, |
| sizeof(struct transmit_cmd_struct)); |
| memset_io(p->xmit_buffs[i], 0, |
| sizeof(struct tbd_struct)); |
| writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]), |
| &p->xmit_cmds[i]->cmd_link); |
| writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status); |
| writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd); |
| writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset); |
| writew(0xffff, &p->xmit_buffs[i]->next); |
| writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer); |
| } |
| |
| p->xmit_count = 0; |
| p->xmit_last = 0; |
| #ifndef NO_NOPCOMMANDS |
| p->nop_point = 0; |
| #endif |
| |
| /* |
| * 'start transmitter' |
| */ |
| #ifndef NO_NOPCOMMANDS |
| writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset); |
| writeb(CUC_START, &p->scb->cmd_cuc); |
| ni_attn586(); |
| wait_for_scb_cmd(dev); |
| #else |
| writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link); |
| writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd); |
| #endif |
| |
| /* |
| * ack. interrupts |
| */ |
| writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc); |
| ni_attn586(); |
| udelay(16); |
| |
| ni_enaint(); |
| |
| return 0; |
| } |
| |
| /****************************************************** |
| * This is a helper routine for ni52_rnr_int() and init586(). |
| * It sets up the Receive Frame Area (RFA). |
| */ |
| |
| static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr) |
| { |
| struct rfd_struct __iomem *rfd = ptr; |
| struct rbd_struct __iomem *rbd; |
| int i; |
| struct priv *p = netdev_priv(dev); |
| |
| memset_io(rfd, 0, |
| sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd)); |
| p->rfd_first = rfd; |
| |
| for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) { |
| writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)), |
| &rfd[i].next); |
| writew(0xffff, &rfd[i].rbd_offset); |
| } |
| /* RU suspend */ |
| writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last); |
| |
| ptr = rfd + (p->num_recv_buffs + rfdadd); |
| |
| rbd = ptr; |
| ptr = rbd + p->num_recv_buffs; |
| |
| /* clr descriptors */ |
| memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs)); |
| |
| for (i = 0; i < p->num_recv_buffs; i++) { |
| writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next); |
| writew(RECV_BUFF_SIZE, &rbd[i].size); |
| writel(make24(ptr), &rbd[i].buffer); |
| ptr = ptr + RECV_BUFF_SIZE; |
| } |
| p->rfd_top = p->rfd_first; |
| p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); |
| |
| writew(make16(p->rfd_first), &p->scb->rfa_offset); |
| writew(make16(rbd), &p->rfd_first->rbd_offset); |
| |
| return ptr; |
| } |
| |
| |
| /************************************************** |
| * Interrupt Handler ... |
| */ |
| |
| static irqreturn_t ni52_interrupt(int irq, void *dev_id) |
| { |
| struct net_device *dev = dev_id; |
| unsigned int stat; |
| int cnt = 0; |
| struct priv *p; |
| |
| p = netdev_priv(dev); |
| |
| if (debuglevel > 1) |
| printk("I"); |
| |
| spin_lock(&p->spinlock); |
| |
| wait_for_scb_cmd(dev); /* wait for last command */ |
| |
| while ((stat = readb(&p->scb->cus) & STAT_MASK)) { |
| writeb(stat, &p->scb->cmd_cuc); |
| ni_attn586(); |
| |
| if (stat & STAT_FR) /* received a frame */ |
| ni52_rcv_int(dev); |
| |
| if (stat & STAT_RNR) { /* RU went 'not ready' */ |
| printk("(R)"); |
| if (readb(&p->scb->rus) & RU_SUSPEND) { |
| /* special case: RU_SUSPEND */ |
| wait_for_scb_cmd(dev); |
| writeb(RUC_RESUME, &p->scb->cmd_ruc); |
| ni_attn586(); |
| wait_for_scb_cmd_ruc(dev); |
| } else { |
| printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n", |
| dev->name, stat, readb(&p->scb->rus)); |
| ni52_rnr_int(dev); |
| } |
| } |
| |
| /* Command with I-bit set complete */ |
| if (stat & STAT_CX) |
| ni52_xmt_int(dev); |
| |
| #ifndef NO_NOPCOMMANDS |
| if (stat & STAT_CNA) { /* CU went 'not ready' */ |
| if (netif_running(dev)) |
| printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n", |
| dev->name, stat, readb(&p->scb->cus)); |
| } |
| #endif |
| |
| if (debuglevel > 1) |
| printk("%d", cnt++); |
| |
| /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */ |
| wait_for_scb_cmd(dev); |
| if (readb(&p->scb->cmd_cuc)) { /* timed out? */ |
| printk(KERN_ERR "%s: Acknowledge timed out.\n", |
| dev->name); |
| ni_disint(); |
| break; |
| } |
| } |
| spin_unlock(&p->spinlock); |
| |
| if (debuglevel > 1) |
| printk("i"); |
| return IRQ_HANDLED; |
| } |
| |
| /******************************************************* |
| * receive-interrupt |
| */ |
| |
| static void ni52_rcv_int(struct net_device *dev) |
| { |
| int status, cnt = 0; |
| unsigned short totlen; |
| struct sk_buff *skb; |
| struct rbd_struct __iomem *rbd; |
| struct priv *p = netdev_priv(dev); |
| |
| if (debuglevel > 0) |
| printk("R"); |
| |
| for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) { |
| rbd = make32(readw(&p->rfd_top->rbd_offset)); |
| if (status & RFD_OK) { /* frame received without error? */ |
| totlen = readw(&rbd->status); |
| if (totlen & RBD_LAST) { |
| /* the first and the last buffer? */ |
| totlen &= RBD_MASK; /* length of this frame */ |
| writew(0x00, &rbd->status); |
| skb = (struct sk_buff *)dev_alloc_skb(totlen+2); |
| if (skb != NULL) { |
| skb_reserve(skb, 2); |
| skb_put(skb, totlen); |
| memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen); |
| skb->protocol = eth_type_trans(skb, dev); |
| netif_rx(skb); |
| p->stats.rx_packets++; |
| p->stats.rx_bytes += totlen; |
| } else |
| p->stats.rx_dropped++; |
| } else { |
| int rstat; |
| /* free all RBD's until RBD_LAST is set */ |
| totlen = 0; |
| while (!((rstat = readw(&rbd->status)) & RBD_LAST)) { |
| totlen += rstat & RBD_MASK; |
| if (!rstat) { |
| printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name); |
| break; |
| } |
| writew(0, &rbd->status); |
| rbd = make32(readw(&rbd->next)); |
| } |
| totlen += rstat & RBD_MASK; |
| writew(0, &rbd->status); |
| printk(KERN_ERR "%s: received oversized frame! length: %d\n", |
| dev->name, totlen); |
| p->stats.rx_dropped++; |
| } |
| } else {/* frame !(ok), only with 'save-bad-frames' */ |
| printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n", |
| dev->name, status); |
| p->stats.rx_errors++; |
| } |
| writeb(0, &p->rfd_top->stat_high); |
| writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */ |
| writew(0xffff, &p->rfd_top->rbd_offset); |
| writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */ |
| p->rfd_last = p->rfd_top; |
| p->rfd_top = make32(readw(&p->rfd_top->next)); /* step to next RFD */ |
| writew(make16(p->rfd_top), &p->scb->rfa_offset); |
| |
| if (debuglevel > 0) |
| printk("%d", cnt++); |
| } |
| |
| if (automatic_resume) { |
| wait_for_scb_cmd(dev); |
| writeb(RUC_RESUME, &p->scb->cmd_ruc); |
| ni_attn586(); |
| wait_for_scb_cmd_ruc(dev); |
| } |
| |
| #ifdef WAIT_4_BUSY |
| { |
| int i; |
| for (i = 0; i < 1024; i++) { |
| if (p->rfd_top->status) |
| break; |
| udelay(16); |
| if (i == 1023) |
| printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name); |
| } |
| } |
| #endif |
| if (debuglevel > 0) |
| printk("r"); |
| } |
| |
| /********************************************************** |
| * handle 'Receiver went not ready'. |
| */ |
| |
| static void ni52_rnr_int(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| |
| p->stats.rx_errors++; |
| |
| wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ |
| writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */ |
| ni_attn586(); |
| wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */ |
| |
| alloc_rfa(dev, p->rfd_first); |
| /* maybe add a check here, before restarting the RU */ |
| startrecv586(dev); /* restart RU */ |
| |
| printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n", |
| dev->name, readb(&p->scb->rus)); |
| |
| } |
| |
| /********************************************************** |
| * handle xmit - interrupt |
| */ |
| |
| static void ni52_xmt_int(struct net_device *dev) |
| { |
| int status; |
| struct priv *p = netdev_priv(dev); |
| |
| if (debuglevel > 0) |
| printk("X"); |
| |
| status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status); |
| if (!(status & STAT_COMPL)) |
| printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name); |
| |
| if (status & STAT_OK) { |
| p->stats.tx_packets++; |
| p->stats.collisions += (status & TCMD_MAXCOLLMASK); |
| } else { |
| p->stats.tx_errors++; |
| if (status & TCMD_LATECOLL) { |
| printk(KERN_ERR "%s: late collision detected.\n", |
| dev->name); |
| p->stats.collisions++; |
| } else if (status & TCMD_NOCARRIER) { |
| p->stats.tx_carrier_errors++; |
| printk(KERN_ERR "%s: no carrier detected.\n", |
| dev->name); |
| } else if (status & TCMD_LOSTCTS) |
| printk(KERN_ERR "%s: loss of CTS detected.\n", |
| dev->name); |
| else if (status & TCMD_UNDERRUN) { |
| p->stats.tx_fifo_errors++; |
| printk(KERN_ERR "%s: DMA underrun detected.\n", |
| dev->name); |
| } else if (status & TCMD_MAXCOLL) { |
| printk(KERN_ERR "%s: Max. collisions exceeded.\n", |
| dev->name); |
| p->stats.collisions += 16; |
| } |
| } |
| #if (NUM_XMIT_BUFFS > 1) |
| if ((++p->xmit_last) == NUM_XMIT_BUFFS) |
| p->xmit_last = 0; |
| #endif |
| netif_wake_queue(dev); |
| } |
| |
| /*********************************************************** |
| * (re)start the receiver |
| */ |
| |
| static void startrecv586(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| |
| wait_for_scb_cmd(dev); |
| wait_for_scb_cmd_ruc(dev); |
| writew(make16(p->rfd_first), &p->scb->rfa_offset); |
| writeb(RUC_START, &p->scb->cmd_ruc); |
| ni_attn586(); /* start cmd. */ |
| wait_for_scb_cmd_ruc(dev); |
| /* wait for accept cmd. (no timeout!!) */ |
| } |
| |
| static void ni52_timeout(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| #ifndef NO_NOPCOMMANDS |
| if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */ |
| netif_wake_queue(dev); |
| #ifdef DEBUG |
| printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n", |
| dev->name); |
| printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n", |
| dev->name, (int)p->xmit_cmds[0]->cmd_status, |
| readw(&p->nop_cmds[0]->cmd_status), |
| readw(&p->nop_cmds[1]->cmd_status), |
| p->nop_point); |
| #endif |
| writeb(CUC_ABORT, &p->scb->cmd_cuc); |
| ni_attn586(); |
| wait_for_scb_cmd(dev); |
| writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset); |
| writeb(CUC_START, &p->scb->cmd_cuc); |
| ni_attn586(); |
| wait_for_scb_cmd(dev); |
| dev->trans_start = jiffies; |
| return 0; |
| } |
| #endif |
| { |
| #ifdef DEBUG |
| printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n", |
| dev->name, readb(&p->scb->cus)); |
| printk(KERN_ERR "%s: command-stats: %04x %04x\n", |
| dev->name, |
| readw(&p->xmit_cmds[0]->cmd_status), |
| readw(&p->xmit_cmds[1]->cmd_status)); |
| printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n", |
| dev->name); |
| #endif |
| ni52_close(dev); |
| ni52_open(dev); |
| } |
| dev->trans_start = jiffies; |
| } |
| |
| /****************************************************** |
| * send frame |
| */ |
| |
| static netdev_tx_t ni52_send_packet(struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| int len, i; |
| #ifndef NO_NOPCOMMANDS |
| int next_nop; |
| #endif |
| struct priv *p = netdev_priv(dev); |
| |
| if (skb->len > XMIT_BUFF_SIZE) { |
| printk(KERN_ERR "%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n", dev->name, XMIT_BUFF_SIZE, skb->len); |
| return NETDEV_TX_OK; |
| } |
| |
| netif_stop_queue(dev); |
| |
| memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len); |
| len = skb->len; |
| if (len < ETH_ZLEN) { |
| len = ETH_ZLEN; |
| memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0, |
| len - skb->len); |
| } |
| |
| #if (NUM_XMIT_BUFFS == 1) |
| # ifdef NO_NOPCOMMANDS |
| |
| #ifdef DEBUG |
| if (readb(&p->scb->cus) & CU_ACTIVE) { |
| printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name); |
| printk(KERN_ERR "%s: stat: %04x %04x\n", |
| dev->name, readb(&p->scb->cus), |
| readw(&p->xmit_cmds[0]->cmd_status)); |
| } |
| #endif |
| writew(TBD_LAST | len, &p->xmit_buffs[0]->size); |
| for (i = 0; i < 16; i++) { |
| writew(0, &p->xmit_cmds[0]->cmd_status); |
| wait_for_scb_cmd(dev); |
| if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND) |
| writeb(CUC_RESUME, &p->scb->cmd_cuc); |
| else { |
| writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset); |
| writeb(CUC_START, &p->scb->cmd_cuc); |
| } |
| ni_attn586(); |
| dev->trans_start = jiffies; |
| if (!i) |
| dev_kfree_skb(skb); |
| wait_for_scb_cmd(dev); |
| /* test it, because CU sometimes doesn't start immediately */ |
| if (readb(&p->scb->cus) & CU_ACTIVE) |
| break; |
| if (readw(&p->xmit_cmds[0]->cmd_status)) |
| break; |
| if (i == 15) |
| printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name); |
| } |
| # else |
| next_nop = (p->nop_point + 1) & 0x1; |
| writew(TBD_LAST | len, &p->xmit_buffs[0]->size); |
| writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link); |
| writew(make16(p->nop_cmds[next_nop]), |
| &p->nop_cmds[next_nop]->cmd_link); |
| writew(0, &p->xmit_cmds[0]->cmd_status); |
| writew(0, &p->nop_cmds[next_nop]->cmd_status); |
| |
| writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link); |
| dev->trans_start = jiffies; |
| p->nop_point = next_nop; |
| dev_kfree_skb(skb); |
| # endif |
| #else |
| writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size); |
| next_nop = p->xmit_count + 1 |
| if (next_nop == NUM_XMIT_BUFFS) |
| next_nop = 0; |
| writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status); |
| /* linkpointer of xmit-command already points to next nop cmd */ |
| writew(make16(p->nop_cmds[next_nop]), |
| &p->nop_cmds[next_nop]->cmd_link); |
| writew(0, &p->nop_cmds[next_nop]->cmd_status); |
| writew(make16(p->xmit_cmds[p->xmit_count]), |
| &p->nop_cmds[p->xmit_count]->cmd_link); |
| dev->trans_start = jiffies; |
| p->xmit_count = next_nop; |
| { |
| unsigned long flags; |
| spin_lock_irqsave(&p->spinlock); |
| if (p->xmit_count != p->xmit_last) |
| netif_wake_queue(dev); |
| spin_unlock_irqrestore(&p->spinlock); |
| } |
| dev_kfree_skb(skb); |
| #endif |
| return NETDEV_TX_OK; |
| } |
| |
| /******************************************* |
| * Someone wanna have the statistics |
| */ |
| |
| static struct net_device_stats *ni52_get_stats(struct net_device *dev) |
| { |
| struct priv *p = netdev_priv(dev); |
| unsigned short crc, aln, rsc, ovrn; |
| |
| /* Get error-statistics from the ni82586 */ |
| crc = readw(&p->scb->crc_errs); |
| writew(0, &p->scb->crc_errs); |
| aln = readw(&p->scb->aln_errs); |
| writew(0, &p->scb->aln_errs); |
| rsc = readw(&p->scb->rsc_errs); |
| writew(0, &p->scb->rsc_errs); |
| ovrn = readw(&p->scb->ovrn_errs); |
| writew(0, &p->scb->ovrn_errs); |
| |
| p->stats.rx_crc_errors += crc; |
| p->stats.rx_fifo_errors += ovrn; |
| p->stats.rx_frame_errors += aln; |
| p->stats.rx_dropped += rsc; |
| |
| return &p->stats; |
| } |
| |
| /******************************************************** |
| * Set MC list .. |
| */ |
| |
| static void set_multicast_list(struct net_device *dev) |
| { |
| netif_stop_queue(dev); |
| ni_disint(); |
| alloc586(dev); |
| init586(dev); |
| startrecv586(dev); |
| ni_enaint(); |
| netif_wake_queue(dev); |
| } |
| |
| #ifdef MODULE |
| static struct net_device *dev_ni52; |
| |
| module_param(io, int, 0); |
| module_param(irq, int, 0); |
| module_param(memstart, long, 0); |
| module_param(memend, long, 0); |
| MODULE_PARM_DESC(io, "NI5210 I/O base address,required"); |
| MODULE_PARM_DESC(irq, "NI5210 IRQ number,required"); |
| MODULE_PARM_DESC(memstart, "NI5210 memory base address,required"); |
| MODULE_PARM_DESC(memend, "NI5210 memory end address,required"); |
| |
| int __init init_module(void) |
| { |
| if (io <= 0x0 || !memend || !memstart || irq < 2) { |
| printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n"); |
| printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n"); |
| return -ENODEV; |
| } |
| dev_ni52 = ni52_probe(-1); |
| if (IS_ERR(dev_ni52)) |
| return PTR_ERR(dev_ni52); |
| return 0; |
| } |
| |
| void __exit cleanup_module(void) |
| { |
| struct priv *p = netdev_priv(dev_ni52); |
| unregister_netdev(dev_ni52); |
| iounmap(p->mapped); |
| release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE); |
| free_netdev(dev_ni52); |
| } |
| #endif /* MODULE */ |
| |
| MODULE_LICENSE("GPL"); |