forked from luck/tmp_suning_uos_patched
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1387 lines
38 KiB
C
1387 lines
38 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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* compile with:
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* gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c
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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 helped
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* 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 better.
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* my experience is, that if a machine sends with more than about 500-600K/s
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* 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 remote
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* 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 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, 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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/* #define REALLY_SLOW_IO */
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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/slab.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) (p->memtop + (short) (ptr16) )
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#define make24(ptr32) ( ((char *) (ptr32)) - p->base)
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#define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) 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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/* different DELAYs */
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#define DELAY(x) mdelay(32 * x);
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#define DELAY_16(); { udelay(16); }
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#define DELAY_18(); { udelay(4); }
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/* wait for command with timeout: */
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#define WAIT_4_SCB_CMD() \
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{ int i; \
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for(i=0;i<16384;i++) { \
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if(!p->scb->cmd_cuc) break; \
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DELAY_18(); \
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if(i == 16383) { \
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printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
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if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
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#define WAIT_4_SCB_CMD_RUC() { int i; \
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for(i=0;i<16384;i++) { \
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if(!p->scb->cmd_ruc) break; \
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DELAY_18(); \
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if(i == 16383) { \
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printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
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if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
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#define WAIT_4_STAT_COMPL(addr) { int i; \
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for(i=0;i<32767;i++) { \
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if((addr)->cmd_status & STAT_COMPL) break; \
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DELAY_16(); DELAY_16(); } }
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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,struct pt_regs *reg_ptr);
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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 int 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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#if 0
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static void ni52_dump(struct net_device *,void *);
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#endif
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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,char *where,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 *alloc_rfa(struct net_device *dev,void *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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{
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struct net_device_stats stats;
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unsigned long base;
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char *memtop;
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long int lock;
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int reseted;
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volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
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volatile struct scp_struct *scp; /* volatile is important */
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volatile struct iscp_struct *iscp; /* volatile is important */
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volatile struct scb_struct *scb; /* volatile is important */
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volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
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#if (NUM_XMIT_BUFFS == 1)
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volatile struct transmit_cmd_struct *xmit_cmds[2];
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volatile struct nop_cmd_struct *nop_cmds[2];
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#else
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volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
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volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
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#endif
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volatile int nop_point,num_recv_buffs;
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volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
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volatile int xmit_count,xmit_last;
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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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{
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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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/**********************************************
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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,char *where,unsigned size)
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{
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struct priv pb;
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struct priv *p = /* (struct priv *) dev->priv*/ &pb;
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char *iscp_addrs[2];
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int i;
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p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000;
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p->memtop = isa_bus_to_virt((unsigned long)where) + size;
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p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
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memset((char *)p->scp,0, sizeof(struct scp_struct));
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for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
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if(((char *)p->scp)[i])
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return 0;
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p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
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if(p->scp->sysbus != SYSBUSVAL)
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return 0;
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iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
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iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct);
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for(i=0;i<2;i++)
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{
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p->iscp = (struct iscp_struct *) iscp_addrs[i];
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memset((char *)p->iscp,0, sizeof(struct iscp_struct));
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p->scp->iscp = make24(p->iscp);
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p->iscp->busy = 1;
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ni_reset586();
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ni_attn586();
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DELAY(1); /* wait a while... */
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if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
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return 0;
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}
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return 1;
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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 = (struct priv *) dev->priv;
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ni_reset586();
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DELAY(1);
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p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
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p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
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p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct));
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memset((char *) p->iscp,0,sizeof(struct iscp_struct));
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memset((char *) p->scp ,0,sizeof(struct scp_struct));
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p->scp->iscp = make24(p->iscp);
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p->scp->sysbus = SYSBUSVAL;
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p->iscp->scb_offset = make16(p->scb);
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p->iscp->busy = 1;
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ni_reset586();
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ni_attn586();
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DELAY(1);
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if(p->iscp->busy)
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printk("%s: Init-Problems (alloc).\n",dev->name);
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p->reseted = 0;
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memset((char *)p->scb,0,sizeof(struct scb_struct));
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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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/**********************************************
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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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int *port;
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int err = 0;
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|
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if (!dev)
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return ERR_PTR(-ENOMEM);
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|
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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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|
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SET_MODULE_OWNER(dev);
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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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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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}
|
|
|
|
static int __init ni52_probe1(struct net_device *dev,int ioaddr)
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{
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int i, size, retval;
|
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|
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dev->base_addr = ioaddr;
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dev->irq = irq;
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dev->mem_start = memstart;
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dev->mem_end = memend;
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|
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if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
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return -EBUSY;
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|
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if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
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!(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
|
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retval = -ENODEV;
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goto out;
|
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}
|
|
|
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for(i=0;i<ETH_ALEN;i++)
|
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dev->dev_addr[i] = inb(dev->base_addr+i);
|
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|
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if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1
|
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|| dev->dev_addr[2] != NI52_ADDR2) {
|
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retval = -ENODEV;
|
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goto out;
|
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}
|
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|
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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%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size);
|
|
retval = -ENODEV;
|
|
goto out;
|
|
}
|
|
if(!check586(dev,(char *) dev->mem_start,size)) {
|
|
printk("?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,(char *) dev->mem_start,size)) {
|
|
size = 0x2000; /* check for 8K mem */
|
|
if(!check586(dev,(char *) dev->mem_start,size)) {
|
|
printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start);
|
|
retval = -ENODEV;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000,
|
|
0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 };
|
|
for(i=0;;i++)
|
|
{
|
|
if(!memaddrs[i]) {
|
|
printk("?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,(char *)dev->mem_start,size)) /* 8K-check */
|
|
break;
|
|
size = 0x4000; /* check for 16K mem */
|
|
if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */
|
|
break;
|
|
}
|
|
}
|
|
dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
|
|
#endif
|
|
|
|
memset((char *) dev->priv,0,sizeof(struct priv));
|
|
|
|
((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size;
|
|
((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
|
|
alloc586(dev);
|
|
|
|
/* set number of receive-buffs according to memsize */
|
|
if(size == 0x2000)
|
|
((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
|
|
else
|
|
((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
|
|
|
|
printk("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;
|
|
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->open = ni52_open;
|
|
dev->stop = ni52_close;
|
|
dev->get_stats = ni52_get_stats;
|
|
dev->tx_timeout = ni52_timeout;
|
|
dev->watchdog_timeo = HZ/20;
|
|
dev->hard_start_xmit = ni52_send_packet;
|
|
dev->set_multicast_list = set_multicast_list;
|
|
|
|
dev->if_port = 0;
|
|
|
|
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 *ptr;
|
|
int i,result=0;
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
volatile struct configure_cmd_struct *cfg_cmd;
|
|
volatile struct iasetup_cmd_struct *ias_cmd;
|
|
volatile struct tdr_cmd_struct *tdr_cmd;
|
|
volatile struct mcsetup_cmd_struct *mc_cmd;
|
|
struct dev_mc_list *dmi=dev->mc_list;
|
|
int num_addrs=dev->mc_count;
|
|
|
|
ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
|
|
|
|
cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
|
|
cfg_cmd->cmd_status = 0;
|
|
cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;
|
|
cfg_cmd->cmd_link = 0xffff;
|
|
|
|
cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
|
|
cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
|
|
cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
|
|
cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
|
|
cfg_cmd->priority = 0x00;
|
|
cfg_cmd->ifs = 0x60;
|
|
cfg_cmd->time_low = 0x00;
|
|
cfg_cmd->time_high = 0xf2;
|
|
cfg_cmd->promisc = 0;
|
|
if(dev->flags & IFF_ALLMULTI) {
|
|
int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
|
|
if(num_addrs > len) {
|
|
printk("%s: switching to promisc. mode\n",dev->name);
|
|
dev->flags|=IFF_PROMISC;
|
|
}
|
|
}
|
|
if(dev->flags&IFF_PROMISC)
|
|
{
|
|
cfg_cmd->promisc=1;
|
|
dev->flags|=IFF_PROMISC;
|
|
}
|
|
cfg_cmd->carr_coll = 0x00;
|
|
|
|
p->scb->cbl_offset = make16(cfg_cmd);
|
|
p->scb->cmd_ruc = 0;
|
|
|
|
p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
|
|
ni_attn586();
|
|
|
|
WAIT_4_STAT_COMPL(cfg_cmd);
|
|
|
|
if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
|
|
{
|
|
printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* individual address setup
|
|
*/
|
|
|
|
ias_cmd = (struct iasetup_cmd_struct *)ptr;
|
|
|
|
ias_cmd->cmd_status = 0;
|
|
ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;
|
|
ias_cmd->cmd_link = 0xffff;
|
|
|
|
memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
|
|
|
|
p->scb->cbl_offset = make16(ias_cmd);
|
|
|
|
p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
|
|
ni_attn586();
|
|
|
|
WAIT_4_STAT_COMPL(ias_cmd);
|
|
|
|
if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
|
|
printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* TDR, wire check .. e.g. no resistor e.t.c
|
|
*/
|
|
|
|
tdr_cmd = (struct tdr_cmd_struct *)ptr;
|
|
|
|
tdr_cmd->cmd_status = 0;
|
|
tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST;
|
|
tdr_cmd->cmd_link = 0xffff;
|
|
tdr_cmd->status = 0;
|
|
|
|
p->scb->cbl_offset = make16(tdr_cmd);
|
|
p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
|
|
ni_attn586();
|
|
|
|
WAIT_4_STAT_COMPL(tdr_cmd);
|
|
|
|
if(!(tdr_cmd->cmd_status & STAT_COMPL))
|
|
{
|
|
printk("%s: Problems while running the TDR.\n",dev->name);
|
|
}
|
|
else
|
|
{
|
|
DELAY_16(); /* wait for result */
|
|
result = tdr_cmd->status;
|
|
|
|
p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
|
|
ni_attn586(); /* ack the interrupts */
|
|
|
|
if(result & TDR_LNK_OK)
|
|
;
|
|
else if(result & TDR_XCVR_PRB)
|
|
printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
|
|
else if(result & TDR_ET_OPN)
|
|
printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
|
|
else if(result & TDR_ET_SRT)
|
|
{
|
|
if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
|
|
printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
|
|
}
|
|
else
|
|
printk("%s: TDR: Unknown status %04x\n",dev->name,result);
|
|
}
|
|
|
|
/*
|
|
* Multicast setup
|
|
*/
|
|
if(num_addrs && !(dev->flags & IFF_PROMISC) )
|
|
{
|
|
mc_cmd = (struct mcsetup_cmd_struct *) ptr;
|
|
mc_cmd->cmd_status = 0;
|
|
mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST;
|
|
mc_cmd->cmd_link = 0xffff;
|
|
mc_cmd->mc_cnt = num_addrs * 6;
|
|
|
|
for(i=0;i<num_addrs;i++,dmi=dmi->next)
|
|
memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
|
|
|
|
p->scb->cbl_offset = make16(mc_cmd);
|
|
p->scb->cmd_cuc = CUC_START;
|
|
ni_attn586();
|
|
|
|
WAIT_4_STAT_COMPL(mc_cmd);
|
|
|
|
if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
|
|
printk("%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] = (struct nop_cmd_struct *)ptr;
|
|
p->nop_cmds[i]->cmd_cmd = CMD_NOP;
|
|
p->nop_cmds[i]->cmd_status = 0;
|
|
p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
|
|
ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
|
|
}
|
|
#else
|
|
for(i=0;i<NUM_XMIT_BUFFS;i++)
|
|
{
|
|
p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
|
|
p->nop_cmds[i]->cmd_cmd = CMD_NOP;
|
|
p->nop_cmds[i]->cmd_status = 0;
|
|
p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
|
|
ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
|
|
}
|
|
#endif
|
|
|
|
ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
|
|
|
|
/*
|
|
* alloc xmit-buffs / init xmit_cmds
|
|
*/
|
|
for(i=0;i<NUM_XMIT_BUFFS;i++)
|
|
{
|
|
p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
|
|
ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
|
|
p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
|
|
ptr = (char *) ptr + XMIT_BUFF_SIZE;
|
|
p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
|
|
ptr = (char *) ptr + sizeof(struct tbd_struct);
|
|
if((void *)ptr > (void *)p->iscp)
|
|
{
|
|
printk("%s: not enough shared-mem for your configuration!\n",dev->name);
|
|
return 1;
|
|
}
|
|
memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
|
|
memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
|
|
p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
|
|
p->xmit_cmds[i]->cmd_status = STAT_COMPL;
|
|
p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT;
|
|
p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
|
|
p->xmit_buffs[i]->next = 0xffff;
|
|
p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
|
|
}
|
|
|
|
p->xmit_count = 0;
|
|
p->xmit_last = 0;
|
|
#ifndef NO_NOPCOMMANDS
|
|
p->nop_point = 0;
|
|
#endif
|
|
|
|
/*
|
|
* 'start transmitter'
|
|
*/
|
|
#ifndef NO_NOPCOMMANDS
|
|
p->scb->cbl_offset = make16(p->nop_cmds[0]);
|
|
p->scb->cmd_cuc = CUC_START;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD();
|
|
#else
|
|
p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
|
|
p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT;
|
|
#endif
|
|
|
|
/*
|
|
* ack. interrupts
|
|
*/
|
|
p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
|
|
ni_attn586();
|
|
DELAY_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 *alloc_rfa(struct net_device *dev,void *ptr)
|
|
{
|
|
volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
|
|
volatile struct rbd_struct *rbd;
|
|
int i;
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
memset((char *) 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++) {
|
|
rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
|
|
rfd[i].rbd_offset = 0xffff;
|
|
}
|
|
rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
|
|
|
|
ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
|
|
|
|
rbd = (struct rbd_struct *) ptr;
|
|
ptr = (void *) (rbd + p->num_recv_buffs);
|
|
|
|
/* clr descriptors */
|
|
memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
|
|
|
|
for(i=0;i<p->num_recv_buffs;i++)
|
|
{
|
|
rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
|
|
rbd[i].size = RECV_BUFF_SIZE;
|
|
rbd[i].buffer = make24(ptr);
|
|
ptr = (char *) ptr + RECV_BUFF_SIZE;
|
|
}
|
|
|
|
p->rfd_top = p->rfd_first;
|
|
p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
|
|
|
|
p->scb->rfa_offset = make16(p->rfd_first);
|
|
p->rfd_first->rbd_offset = make16(rbd);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
|
|
/**************************************************
|
|
* Interrupt Handler ...
|
|
*/
|
|
|
|
static irqreturn_t ni52_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
unsigned short stat;
|
|
int cnt=0;
|
|
struct priv *p;
|
|
|
|
if (!dev) {
|
|
printk ("ni5210-interrupt: irq %d for unknown device.\n",irq);
|
|
return IRQ_NONE;
|
|
}
|
|
p = (struct priv *) dev->priv;
|
|
|
|
if(debuglevel > 1)
|
|
printk("I");
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for last command */
|
|
|
|
while((stat=p->scb->cus & STAT_MASK))
|
|
{
|
|
p->scb->cmd_cuc = stat;
|
|
ni_attn586();
|
|
|
|
if(stat & STAT_FR) /* received a frame */
|
|
ni52_rcv_int(dev);
|
|
|
|
if(stat & STAT_RNR) /* RU went 'not ready' */
|
|
{
|
|
printk("(R)");
|
|
if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
|
|
{
|
|
WAIT_4_SCB_CMD();
|
|
p->scb->cmd_ruc = RUC_RESUME;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD_RUC();
|
|
}
|
|
else
|
|
{
|
|
printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
|
|
ni52_rnr_int(dev);
|
|
}
|
|
}
|
|
|
|
if(stat & STAT_CX) /* command with I-bit set complete */
|
|
ni52_xmt_int(dev);
|
|
|
|
#ifndef NO_NOPCOMMANDS
|
|
if(stat & STAT_CNA) /* CU went 'not ready' */
|
|
{
|
|
if(netif_running(dev))
|
|
printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
|
|
}
|
|
#endif
|
|
|
|
if(debuglevel > 1)
|
|
printk("%d",cnt++);
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */
|
|
if(p->scb->cmd_cuc) /* timed out? */
|
|
{
|
|
printk("%s: Acknowledge timed out.\n",dev->name);
|
|
ni_disint();
|
|
break;
|
|
}
|
|
}
|
|
|
|
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 *rbd;
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
if(debuglevel > 0)
|
|
printk("R");
|
|
|
|
for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
|
|
{
|
|
rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
|
|
|
|
if(status & RFD_OK) /* frame received without error? */
|
|
{
|
|
if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */
|
|
{
|
|
totlen &= RBD_MASK; /* length of this frame */
|
|
rbd->status = 0;
|
|
skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
|
|
if(skb != NULL)
|
|
{
|
|
skb->dev = dev;
|
|
skb_reserve(skb,2);
|
|
skb_put(skb,totlen);
|
|
eth_copy_and_sum(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen,0);
|
|
skb->protocol=eth_type_trans(skb,dev);
|
|
netif_rx(skb);
|
|
dev->last_rx = jiffies;
|
|
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=rbd->status) & RBD_LAST))
|
|
{
|
|
totlen += rstat & RBD_MASK;
|
|
if(!rstat)
|
|
{
|
|
printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
|
|
break;
|
|
}
|
|
rbd->status = 0;
|
|
rbd = (struct rbd_struct *) make32(rbd->next);
|
|
}
|
|
totlen += rstat & RBD_MASK;
|
|
rbd->status = 0;
|
|
printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
|
|
p->stats.rx_dropped++;
|
|
}
|
|
}
|
|
else /* frame !(ok), only with 'save-bad-frames' */
|
|
{
|
|
printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
|
|
p->stats.rx_errors++;
|
|
}
|
|
p->rfd_top->stat_high = 0;
|
|
p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
|
|
p->rfd_top->rbd_offset = 0xffff;
|
|
p->rfd_last->last = 0; /* delete RFD_SUSP */
|
|
p->rfd_last = p->rfd_top;
|
|
p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
|
|
p->scb->rfa_offset = make16(p->rfd_top);
|
|
|
|
if(debuglevel > 0)
|
|
printk("%d",cnt++);
|
|
}
|
|
|
|
if(automatic_resume)
|
|
{
|
|
WAIT_4_SCB_CMD();
|
|
p->scb->cmd_ruc = RUC_RESUME;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD_RUC();
|
|
}
|
|
|
|
#ifdef WAIT_4_BUSY
|
|
{
|
|
int i;
|
|
for(i=0;i<1024;i++)
|
|
{
|
|
if(p->rfd_top->status)
|
|
break;
|
|
DELAY_16();
|
|
if(i == 1023)
|
|
printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
if(!at_least_one)
|
|
{
|
|
int i;
|
|
volatile struct rfd_struct *rfds=p->rfd_top;
|
|
volatile struct rbd_struct *rbds;
|
|
printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
|
|
for(i=0;i< (p->num_recv_buffs+4);i++)
|
|
{
|
|
rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
|
|
printk("%04x:%04x ",rfds->status,rbds->status);
|
|
rfds = (struct rfd_struct *) make32(rfds->next);
|
|
}
|
|
printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
|
|
printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus);
|
|
}
|
|
old_at_least = at_least_one;
|
|
#endif
|
|
|
|
if(debuglevel > 0)
|
|
printk("r");
|
|
}
|
|
|
|
/**********************************************************
|
|
* handle 'Receiver went not ready'.
|
|
*/
|
|
|
|
static void ni52_rnr_int(struct net_device *dev)
|
|
{
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
p->stats.rx_errors++;
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
|
|
p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
|
|
|
|
alloc_rfa(dev,(char *)p->rfd_first);
|
|
/* maybe add a check here, before restarting the RU */
|
|
startrecv586(dev); /* restart RU */
|
|
|
|
printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
|
|
|
|
}
|
|
|
|
/**********************************************************
|
|
* handle xmit - interrupt
|
|
*/
|
|
|
|
static void ni52_xmt_int(struct net_device *dev)
|
|
{
|
|
int status;
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
if(debuglevel > 0)
|
|
printk("X");
|
|
|
|
status = p->xmit_cmds[p->xmit_last]->cmd_status;
|
|
if(!(status & STAT_COMPL))
|
|
printk("%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("%s: late collision detected.\n",dev->name);
|
|
p->stats.collisions++;
|
|
}
|
|
else if(status & TCMD_NOCARRIER) {
|
|
p->stats.tx_carrier_errors++;
|
|
printk("%s: no carrier detected.\n",dev->name);
|
|
}
|
|
else if(status & TCMD_LOSTCTS)
|
|
printk("%s: loss of CTS detected.\n",dev->name);
|
|
else if(status & TCMD_UNDERRUN) {
|
|
p->stats.tx_fifo_errors++;
|
|
printk("%s: DMA underrun detected.\n",dev->name);
|
|
}
|
|
else if(status & TCMD_MAXCOLL) {
|
|
printk("%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 = (struct priv *) dev->priv;
|
|
|
|
WAIT_4_SCB_CMD();
|
|
WAIT_4_SCB_CMD_RUC();
|
|
p->scb->rfa_offset = make16(p->rfd_first);
|
|
p->scb->cmd_ruc = RUC_START;
|
|
ni_attn586(); /* start cmd. */
|
|
WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
|
|
}
|
|
|
|
static void ni52_timeout(struct net_device *dev)
|
|
{
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
#ifndef NO_NOPCOMMANDS
|
|
if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
|
|
{
|
|
netif_wake_queue(dev);
|
|
#ifdef DEBUG
|
|
printk("%s: strange ... timeout with CU active?!?\n",dev->name);
|
|
printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)p->xmit_cmds[0]->cmd_status,(int)p->nop_cmds[0]->cmd_status,(int)p->nop_cmds[1]->cmd_status,(int)p->nop_point);
|
|
#endif
|
|
p->scb->cmd_cuc = CUC_ABORT;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD();
|
|
p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
|
|
p->scb->cmd_cuc = CUC_START;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD();
|
|
dev->trans_start = jiffies;
|
|
return 0;
|
|
}
|
|
#endif
|
|
{
|
|
#ifdef DEBUG
|
|
printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
|
|
printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status);
|
|
printk("%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 int ni52_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
int len,i;
|
|
#ifndef NO_NOPCOMMANDS
|
|
int next_nop;
|
|
#endif
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
if(skb->len > XMIT_BUFF_SIZE)
|
|
{
|
|
printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
|
|
return 0;
|
|
}
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
#if(NUM_XMIT_BUFFS > 1)
|
|
if(test_and_set_bit(0,(void *) &p->lock)) {
|
|
printk("%s: Queue was locked\n",dev->name);
|
|
return 1;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
|
|
len = skb->len;
|
|
if (len < ETH_ZLEN) {
|
|
len = ETH_ZLEN;
|
|
memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len);
|
|
}
|
|
|
|
#if (NUM_XMIT_BUFFS == 1)
|
|
# ifdef NO_NOPCOMMANDS
|
|
|
|
#ifdef DEBUG
|
|
if(p->scb->cus & CU_ACTIVE)
|
|
{
|
|
printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
|
|
printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status);
|
|
}
|
|
#endif
|
|
|
|
p->xmit_buffs[0]->size = TBD_LAST | len;
|
|
for(i=0;i<16;i++)
|
|
{
|
|
p->xmit_cmds[0]->cmd_status = 0;
|
|
WAIT_4_SCB_CMD();
|
|
if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
|
|
p->scb->cmd_cuc = CUC_RESUME;
|
|
else
|
|
{
|
|
p->scb->cbl_offset = make16(p->xmit_cmds[0]);
|
|
p->scb->cmd_cuc = CUC_START;
|
|
}
|
|
|
|
ni_attn586();
|
|
dev->trans_start = jiffies;
|
|
if(!i)
|
|
dev_kfree_skb(skb);
|
|
WAIT_4_SCB_CMD();
|
|
if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
|
|
break;
|
|
if(p->xmit_cmds[0]->cmd_status)
|
|
break;
|
|
if(i==15)
|
|
printk("%s: Can't start transmit-command.\n",dev->name);
|
|
}
|
|
# else
|
|
next_nop = (p->nop_point + 1) & 0x1;
|
|
p->xmit_buffs[0]->size = TBD_LAST | len;
|
|
|
|
p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
|
|
= make16((p->nop_cmds[next_nop]));
|
|
p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
|
|
|
|
p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
|
|
dev->trans_start = jiffies;
|
|
p->nop_point = next_nop;
|
|
dev_kfree_skb(skb);
|
|
# endif
|
|
#else
|
|
p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len;
|
|
if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
|
|
next_nop = 0;
|
|
|
|
p->xmit_cmds[p->xmit_count]->cmd_status = 0;
|
|
/* linkpointer of xmit-command already points to next nop cmd */
|
|
p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
|
|
p->nop_cmds[next_nop]->cmd_status = 0;
|
|
|
|
p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
|
|
dev->trans_start = jiffies;
|
|
p->xmit_count = next_nop;
|
|
|
|
{
|
|
unsigned long flags;
|
|
save_flags(flags);
|
|
cli();
|
|
if(p->xmit_count != p->xmit_last)
|
|
netif_wake_queue(dev);
|
|
p->lock = 0;
|
|
restore_flags(flags);
|
|
}
|
|
dev_kfree_skb(skb);
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*******************************************
|
|
* Someone wanna have the statistics
|
|
*/
|
|
|
|
static struct net_device_stats *ni52_get_stats(struct net_device *dev)
|
|
{
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
unsigned short crc,aln,rsc,ovrn;
|
|
|
|
crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */
|
|
p->scb->crc_errs = 0;
|
|
aln = p->scb->aln_errs;
|
|
p->scb->aln_errs = 0;
|
|
rsc = p->scb->rsc_errs;
|
|
p->scb->rsc_errs = 0;
|
|
ovrn = p->scb->ovrn_errs;
|
|
p->scb->ovrn_errs = 0;
|
|
|
|
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_module(void)
|
|
{
|
|
if(io <= 0x0 || !memend || !memstart || irq < 2) {
|
|
printk("ni52: Autoprobing not allowed for modules.\nni52: 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 cleanup_module(void)
|
|
{
|
|
unregister_netdev(dev_ni52);
|
|
release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
|
|
free_netdev(dev_ni52);
|
|
}
|
|
#endif /* MODULE */
|
|
|
|
#if 0
|
|
/*
|
|
* DUMP .. we expect a not running CMD unit and enough space
|
|
*/
|
|
void ni52_dump(struct net_device *dev,void *ptr)
|
|
{
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
|
|
int i;
|
|
|
|
p->scb->cmd_cuc = CUC_ABORT;
|
|
ni_attn586();
|
|
WAIT_4_SCB_CMD();
|
|
WAIT_4_SCB_CMD_RUC();
|
|
|
|
dump_cmd->cmd_status = 0;
|
|
dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
|
|
dump_cmd->dump_offset = make16((dump_cmd + 1));
|
|
dump_cmd->cmd_link = 0xffff;
|
|
|
|
p->scb->cbl_offset = make16(dump_cmd);
|
|
p->scb->cmd_cuc = CUC_START;
|
|
ni_attn586();
|
|
WAIT_4_STAT_COMPL(dump_cmd);
|
|
|
|
if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
|
|
printk("%s: Can't get dump information.\n",dev->name);
|
|
|
|
for(i=0;i<170;i++) {
|
|
printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
|
|
if(i % 24 == 23)
|
|
printk("\n");
|
|
}
|
|
printk("\n");
|
|
}
|
|
#endif
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*
|
|
* END: linux/drivers/net/ni52.c
|
|
*/
|