![Eric Dumazet](/assets/img/avatar_default.png)
Now that core network takes care of trans_start updates, dont do it in drivers themselves, if possible. Drivers can avoid one cache miss (on dev->trans_start) in their start_xmit() handler. Exceptions are NETIF_F_LLTX drivers Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1348 lines
37 KiB
C
1348 lines
37 KiB
C
/*
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* net-3-driver for the NI5210 card (i82586 Ethernet chip)
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*
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* This is an extension to the Linux operating system, and is covered by the
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* same GNU General Public License that covers that work.
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*
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* Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
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* Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
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* [feel free to mail ....]
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*
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* when using as module: (no autoprobing!)
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* run with e.g:
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* insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
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*
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* CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
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*
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* If you find a bug, please report me:
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* The kernel panic output and any kmsg from the ni52 driver
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* the ni5210-driver-version and the linux-kernel version
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* how many shared memory (memsize) on the netcard,
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* bootprom: yes/no, base_addr, mem_start
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* maybe the ni5210-card revision and the i82586 version
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*
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* autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
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* mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
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* 0xd8000,0xcc000,0xce000,0xda000,0xdc000
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*
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* sources:
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* skeleton.c from Donald Becker
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*
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* I have also done a look in the following sources: (mail me if you need them)
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* crynwr-packet-driver by Russ Nelson
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* Garret A. Wollman's (fourth) i82586-driver for BSD
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* (before getting an i82596 (yes 596 not 586) manual, the existing drivers
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* helped me a lot to understand this tricky chip.)
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*
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* Known Problems:
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* The internal sysbus seems to be slow. So we often lose packets because of
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* overruns while receiving from a fast remote host.
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* This can slow down TCP connections. Maybe the newer ni5210 cards are
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* better. My experience is, that if a machine sends with more than about
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* 500-600K/s the fifo/sysbus overflows.
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*
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* IMPORTANT NOTE:
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* On fast networks, it's a (very) good idea to have 16K shared memory. With
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* 8K, we can store only 4 receive frames, so it can (easily) happen that a
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* remote machine 'overruns' our system.
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*
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* Known i82586/card problems (I'm sure, there are many more!):
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* Running the NOP-mode, the i82586 sometimes seems to forget to report
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* every xmit-interrupt until we restart the CU.
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* Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
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* in the RBD-Struct which indicates an end of the RBD queue.
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* Instead, the RU fetches another (randomly selected and
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* usually used) RBD and begins to fill it. (Maybe, this happens only if
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* the last buffer from the previous RFD fits exact into the queue and
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* the next RFD can't fetch an initial RBD. Anyone knows more? )
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*
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* results from ftp performance tests with Linux 1.2.5
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* send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
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* sending in NOP-mode: peak performance up to 530K/s (but better don't
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* run this mode)
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*/
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/*
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* 29.Sept.96: virt_to_bus changes for new memory scheme
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* 19.Feb.96: more Mcast changes, module support (MH)
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*
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* 18.Nov.95: Mcast changes (AC).
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*
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* 23.April.95: fixed(?) receiving problems by configuring a RFD more
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* than the number of RBD's. Can maybe cause other problems.
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* 18.April.95: Added MODULE support (MH)
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* 17.April.95: MC related changes in init586() and set_multicast_list().
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* removed use of 'jiffies' in init586() (MH)
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*
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* 19.Sep.94: Added Multicast support (not tested yet) (MH)
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*
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* 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
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* Now, every RFD has exact one RBD. (MH)
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*
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* 14.Sep.94: added promiscuous mode, a few cleanups (MH)
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*
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* 19.Aug.94: changed request_irq() parameter (MH)
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*
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* 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
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*
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* 19.July.94: lotsa cleanups .. (MH)
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*
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* 17.July.94: some patches ... verified to run with 1.1.29 (MH)
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*
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* 4.July.94: patches for Linux 1.1.24 (MH)
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*
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* 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
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*
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* 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff,
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* too (MH)
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*
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* < 30.Sep.93: first versions
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*/
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static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
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static int automatic_resume; /* experimental .. better should be zero */
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static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
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static int fifo = 0x8; /* don't change */
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include "ni52.h"
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#define DRV_NAME "ni52"
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#define DEBUG /* debug on */
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#define SYSBUSVAL 1 /* 8 Bit */
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#define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); }
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#define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); }
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#define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); }
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#define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); }
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#define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16)))
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#define make24(ptr32) ((char __iomem *)(ptr32)) - p->base
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#define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\
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- p->memtop))
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/******************* how to calculate the buffers *****************************
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* IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
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* --------------- in a different (more stable?) mode. Only in this mode it's
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* possible to configure the driver with 'NO_NOPCOMMANDS'
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sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
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sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
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sizeof(rfd) = 24; sizeof(rbd) = 12;
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sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
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sizeof(nop_cmd) = 8;
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* if you don't know the driver, better do not change these values: */
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#define RECV_BUFF_SIZE 1524 /* slightly oversized */
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#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
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#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
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#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
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#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
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#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
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/**************************************************************************/
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#define NI52_TOTAL_SIZE 16
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#define NI52_ADDR0 0x02
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#define NI52_ADDR1 0x07
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#define NI52_ADDR2 0x01
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static int ni52_probe1(struct net_device *dev, int ioaddr);
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static irqreturn_t ni52_interrupt(int irq, void *dev_id);
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static int ni52_open(struct net_device *dev);
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static int ni52_close(struct net_device *dev);
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static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *);
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static struct net_device_stats *ni52_get_stats(struct net_device *dev);
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static void set_multicast_list(struct net_device *dev);
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static void ni52_timeout(struct net_device *dev);
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/* helper-functions */
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static int init586(struct net_device *dev);
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static int check586(struct net_device *dev, unsigned size);
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static void alloc586(struct net_device *dev);
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static void startrecv586(struct net_device *dev);
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static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr);
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static void ni52_rcv_int(struct net_device *dev);
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static void ni52_xmt_int(struct net_device *dev);
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static void ni52_rnr_int(struct net_device *dev);
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struct priv {
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struct net_device_stats stats;
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char __iomem *base;
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char __iomem *mapped;
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char __iomem *memtop;
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spinlock_t spinlock;
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int reset;
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struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first;
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struct scp_struct __iomem *scp;
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struct iscp_struct __iomem *iscp;
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struct scb_struct __iomem *scb;
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struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS];
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#if (NUM_XMIT_BUFFS == 1)
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struct transmit_cmd_struct __iomem *xmit_cmds[2];
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struct nop_cmd_struct __iomem *nop_cmds[2];
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#else
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struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS];
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struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS];
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#endif
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int nop_point, num_recv_buffs;
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char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS];
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int xmit_count, xmit_last;
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};
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/* wait for command with timeout: */
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static void wait_for_scb_cmd(struct net_device *dev)
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{
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struct priv *p = netdev_priv(dev);
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int i;
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for (i = 0; i < 16384; i++) {
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if (readb(&p->scb->cmd_cuc) == 0)
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break;
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udelay(4);
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if (i == 16383) {
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printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",
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dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus));
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if (!p->reset) {
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p->reset = 1;
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ni_reset586();
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}
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}
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}
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}
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static void wait_for_scb_cmd_ruc(struct net_device *dev)
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{
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struct priv *p = netdev_priv(dev);
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int i;
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for (i = 0; i < 16384; i++) {
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if (readb(&p->scb->cmd_ruc) == 0)
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break;
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udelay(4);
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if (i == 16383) {
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printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",
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dev->name, readb(&p->scb->cmd_ruc),
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readb(&p->scb->rus));
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if (!p->reset) {
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p->reset = 1;
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ni_reset586();
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}
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}
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}
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}
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static void wait_for_stat_compl(void __iomem *p)
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{
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struct nop_cmd_struct __iomem *addr = p;
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int i;
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for (i = 0; i < 32767; i++) {
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if (readw(&((addr)->cmd_status)) & STAT_COMPL)
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break;
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udelay(32);
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}
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}
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/**********************************************
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* close device
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*/
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static int ni52_close(struct net_device *dev)
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{
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free_irq(dev->irq, dev);
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ni_reset586(); /* the hard way to stop the receiver */
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netif_stop_queue(dev);
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return 0;
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}
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/**********************************************
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* open device
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*/
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static int ni52_open(struct net_device *dev)
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{
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int ret;
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ni_disint();
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alloc586(dev);
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init586(dev);
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startrecv586(dev);
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ni_enaint();
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ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev);
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if (ret) {
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ni_reset586();
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return ret;
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}
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netif_start_queue(dev);
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return 0; /* most done by init */
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}
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static int check_iscp(struct net_device *dev, void __iomem *addr)
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{
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struct iscp_struct __iomem *iscp = addr;
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struct priv *p = netdev_priv(dev);
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memset_io(iscp, 0, sizeof(struct iscp_struct));
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writel(make24(iscp), &p->scp->iscp);
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writeb(1, &iscp->busy);
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ni_reset586();
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ni_attn586();
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mdelay(32); /* wait a while... */
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/* i82586 clears 'busy' after successful init */
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if (readb(&iscp->busy))
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return 0;
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return 1;
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}
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/**********************************************
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* Check to see if there's an 82586 out there.
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*/
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static int check586(struct net_device *dev, unsigned size)
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{
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struct priv *p = netdev_priv(dev);
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int i;
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p->mapped = ioremap(dev->mem_start, size);
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if (!p->mapped)
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return 0;
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p->base = p->mapped + size - 0x01000000;
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p->memtop = p->mapped + size;
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p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS);
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p->scb = (struct scb_struct __iomem *) p->mapped;
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p->iscp = (struct iscp_struct __iomem *)p->scp - 1;
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memset_io(p->scp, 0, sizeof(struct scp_struct));
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for (i = 0; i < sizeof(struct scp_struct); i++)
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/* memory was writeable? */
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if (readb((char __iomem *)p->scp + i))
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goto Enodev;
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writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */
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if (readb(&p->scp->sysbus) != SYSBUSVAL)
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goto Enodev;
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if (!check_iscp(dev, p->mapped))
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goto Enodev;
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if (!check_iscp(dev, p->iscp))
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goto Enodev;
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return 1;
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Enodev:
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iounmap(p->mapped);
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return 0;
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}
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/******************************************************************
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* set iscp at the right place, called by ni52_probe1 and open586.
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*/
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static void alloc586(struct net_device *dev)
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{
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struct priv *p = netdev_priv(dev);
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ni_reset586();
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mdelay(32);
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memset_io(p->iscp, 0, sizeof(struct iscp_struct));
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memset_io(p->scp , 0, sizeof(struct scp_struct));
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writel(make24(p->iscp), &p->scp->iscp);
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writeb(SYSBUSVAL, &p->scp->sysbus);
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writew(make16(p->scb), &p->iscp->scb_offset);
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writeb(1, &p->iscp->busy);
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ni_reset586();
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ni_attn586();
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mdelay(32);
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if (readb(&p->iscp->busy))
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printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
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p->reset = 0;
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memset_io(p->scb, 0, sizeof(struct scb_struct));
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}
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|
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/* set: io,irq,memstart,memend or set it when calling insmod */
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static int irq = 9;
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static int io = 0x300;
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static long memstart; /* e.g 0xd0000 */
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static long memend; /* e.g 0xd4000 */
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/**********************************************
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* probe the ni5210-card
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*/
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struct net_device * __init ni52_probe(int unit)
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{
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struct net_device *dev = alloc_etherdev(sizeof(struct priv));
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static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
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struct priv *p;
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int *port;
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int err = 0;
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if (!dev)
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return ERR_PTR(-ENOMEM);
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|
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p = netdev_priv(dev);
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if (unit >= 0) {
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sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
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io = dev->base_addr;
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irq = dev->irq;
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memstart = dev->mem_start;
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memend = dev->mem_end;
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}
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if (io > 0x1ff) { /* Check a single specified location. */
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err = ni52_probe1(dev, io);
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} else if (io > 0) { /* Don't probe at all. */
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err = -ENXIO;
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} else {
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for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
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;
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if (*port)
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goto got_it;
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#ifdef FULL_IO_PROBE
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for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
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;
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if (io < 0x400)
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goto got_it;
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#endif
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err = -ENODEV;
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}
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if (err)
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goto out;
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got_it:
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err = register_netdev(dev);
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if (err)
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goto out1;
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return dev;
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out1:
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iounmap(p->mapped);
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release_region(dev->base_addr, NI52_TOTAL_SIZE);
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out:
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free_netdev(dev);
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return ERR_PTR(err);
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}
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static const struct net_device_ops ni52_netdev_ops = {
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.ndo_open = ni52_open,
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.ndo_stop = ni52_close,
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.ndo_get_stats = ni52_get_stats,
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.ndo_tx_timeout = ni52_timeout,
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.ndo_start_xmit = ni52_send_packet,
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.ndo_set_multicast_list = set_multicast_list,
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.ndo_change_mtu = eth_change_mtu,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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};
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|
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static int __init ni52_probe1(struct net_device *dev, int ioaddr)
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{
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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 netdev_hw_addr *ha;
|
|
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);
|
|
|
|
i = 0;
|
|
netdev_for_each_mc_addr(ha, dev)
|
|
memcpy_toio(mc_cmd->mc_list[i++], ha->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; /* prevent tx timeout */
|
|
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; /* prevent tx timeout */
|
|
}
|
|
|
|
/******************************************************
|
|
* 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();
|
|
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);
|
|
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);
|
|
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");
|