2 * net-3-driver for the NI5210 card (i82586 Ethernet chip)
4 * This is an extension to the Linux operating system, and is covered by the
5 * same Gnu Public License that covers that work.
7 * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
8 * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
9 * [feel free to mail ....]
11 * when using as module: (no autoprobing!)
13 * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c
15 * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
17 * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
19 * If you find a bug, please report me:
20 * The kernel panic output and any kmsg from the ni52 driver
21 * the ni5210-driver-version and the linux-kernel version
22 * how many shared memory (memsize) on the netcard,
23 * bootprom: yes/no, base_addr, mem_start
24 * maybe the ni5210-card revision and the i82586 version
26 * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
27 * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
28 * 0xd8000,0xcc000,0xce000,0xda000,0xdc000
31 * skeleton.c from Donald Becker
33 * I have also done a look in the following sources: (mail me if you need them)
34 * crynwr-packet-driver by Russ Nelson
35 * Garret A. Wollman's (fourth) i82586-driver for BSD
36 * (before getting an i82596 (yes 596 not 586) manual, the existing drivers helped
37 * me a lot to understand this tricky chip.)
40 * The internal sysbus seems to be slow. So we often lose packets because of
41 * overruns while receiving from a fast remote host.
42 * This can slow down TCP connections. Maybe the newer ni5210 cards are better.
43 * my experience is, that if a machine sends with more then about 500-600K/s
44 * the fifo/sysbus overflows.
47 * On fast networks, it's a (very) good idea to have 16K shared memory. With
48 * 8K, we can store only 4 receive frames, so it can (easily) happen that a remote
49 * machine 'overruns' our system.
51 * Known i82586/card problems (I'm sure, there are many more!):
52 * Running the NOP-mode, the i82586 sometimes seems to forget to report
53 * every xmit-interrupt until we restart the CU.
54 * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
55 * in the RBD-Struct which indicates an end of the RBD queue.
56 * Instead, the RU fetches another (randomly selected and
57 * usually used) RBD and begins to fill it. (Maybe, this happens only if
58 * the last buffer from the previous RFD fits exact into the queue and
59 * the next RFD can't fetch an initial RBD. Anyone knows more? )
61 * results from ftp performance tests with Linux 1.2.5
62 * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
63 * sending in NOP-mode: peak performance up to 530K/s (but better don't run this mode)
67 * 29.Sept.96: virt_to_bus changes for new memory scheme
68 * 19.Feb.96: more Mcast changes, module support (MH)
70 * 18.Nov.95: Mcast changes (AC).
72 * 23.April.95: fixed(?) receiving problems by configuring a RFD more
73 * than the number of RBD's. Can maybe cause other problems.
74 * 18.April.95: Added MODULE support (MH)
75 * 17.April.95: MC related changes in init586() and set_multicast_list().
76 * removed use of 'jiffies' in init586() (MH)
78 * 19.Sep.94: Added Multicast support (not tested yet) (MH)
80 * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
81 * Now, every RFD has exact one RBD. (MH)
83 * 14.Sep.94: added promiscuous mode, a few cleanups (MH)
85 * 19.Aug.94: changed request_irq() parameter (MH)
87 * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
89 * 19.July.94: lotsa cleanups .. (MH)
91 * 17.July.94: some patches ... verified to run with 1.1.29 (MH)
93 * 4.July.94: patches for Linux 1.1.24 (MH)
95 * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
97 * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, too (MH)
99 * < 30.Sep.93: first versions
102 static int debuglevel
= 0; /* debug-printk 0: off 1: a few 2: more */
103 static int automatic_resume
= 0; /* experimental .. better should be zero */
104 static int rfdadd
= 0; /* rfdadd=1 may be better for 8K MEM cards */
105 static int fifo
=0x8; /* don't change */
107 /* #define REALLY_SLOW_IO */
109 #include <linux/module.h>
110 #include <linux/kernel.h>
111 #include <linux/string.h>
112 #include <linux/errno.h>
113 #include <linux/ioport.h>
114 #include <linux/malloc.h>
115 #include <linux/interrupt.h>
116 #include <linux/delay.h>
117 #include <linux/init.h>
118 #include <asm/bitops.h>
121 #include <linux/netdevice.h>
122 #include <linux/etherdevice.h>
123 #include <linux/skbuff.h>
127 #define DEBUG /* debug on */
128 #define SYSBUSVAL 1 /* 8 Bit */
130 #define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);}
131 #define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);}
132 #define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);}
133 #define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);}
135 #define make32(ptr16) (p->memtop + (short) (ptr16) )
136 #define make24(ptr32) ( ((char *) (ptr32)) - p->base)
137 #define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop ))
139 /******************* how to calculate the buffers *****************************
141 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
142 * --------------- in a different (more stable?) mode. Only in this mode it's
143 * possible to configure the driver with 'NO_NOPCOMMANDS'
145 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
146 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
147 sizeof(rfd) = 24; sizeof(rbd) = 12;
148 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
151 * if you don't know the driver, better do not change these values: */
153 #define RECV_BUFF_SIZE 1524 /* slightly oversized */
154 #define XMIT_BUFF_SIZE 1524 /* slightly oversized */
155 #define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
156 #define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
157 #define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
158 #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
160 /**************************************************************************/
162 /* different DELAYs */
163 #define DELAY(x) __delay((loops_per_sec>>5)*(x));
164 #define DELAY_16(); { __delay( (loops_per_sec>>16)+1 ); }
165 #define DELAY_18(); { __delay( (loops_per_sec>>18)+1 ); }
167 /* wait for command with timeout: */
168 #define WAIT_4_SCB_CMD() \
170 for(i=0;i<16384;i++) { \
171 if(!p->scb->cmd_cuc) break; \
174 printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
175 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
177 #define WAIT_4_SCB_CMD_RUC() { int i; \
178 for(i=0;i<16384;i++) { \
179 if(!p->scb->cmd_ruc) break; \
182 printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
183 if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
185 #define WAIT_4_STAT_COMPL(addr) { int i; \
186 for(i=0;i<32767;i++) { \
187 if((addr)->cmd_status & STAT_COMPL) break; \
188 DELAY_16(); DELAY_16(); } }
190 #define NI52_TOTAL_SIZE 16
191 #define NI52_ADDR0 0x02
192 #define NI52_ADDR1 0x07
193 #define NI52_ADDR2 0x01
195 static int ni52_probe1(struct net_device
*dev
,int ioaddr
);
196 static void ni52_interrupt(int irq
,void *dev_id
,struct pt_regs
*reg_ptr
);
197 static int ni52_open(struct net_device
*dev
);
198 static int ni52_close(struct net_device
*dev
);
199 static int ni52_send_packet(struct sk_buff
*,struct net_device
*);
200 static struct net_device_stats
*ni52_get_stats(struct net_device
*dev
);
201 static void set_multicast_list(struct net_device
*dev
);
202 static void ni52_timeout(struct net_device
*dev
);
204 static void ni52_dump(struct net_device
*,void *);
207 /* helper-functions */
208 static int init586(struct net_device
*dev
);
209 static int check586(struct net_device
*dev
,char *where
,unsigned size
);
210 static void alloc586(struct net_device
*dev
);
211 static void startrecv586(struct net_device
*dev
);
212 static void *alloc_rfa(struct net_device
*dev
,void *ptr
);
213 static void ni52_rcv_int(struct net_device
*dev
);
214 static void ni52_xmt_int(struct net_device
*dev
);
215 static void ni52_rnr_int(struct net_device
*dev
);
219 struct net_device_stats stats
;
223 volatile struct rfd_struct
*rfd_last
,*rfd_top
,*rfd_first
;
224 volatile struct scp_struct
*scp
; /* volatile is important */
225 volatile struct iscp_struct
*iscp
; /* volatile is important */
226 volatile struct scb_struct
*scb
; /* volatile is important */
227 volatile struct tbd_struct
*xmit_buffs
[NUM_XMIT_BUFFS
];
228 volatile struct transmit_cmd_struct
*xmit_cmds
[NUM_XMIT_BUFFS
];
229 #if (NUM_XMIT_BUFFS == 1)
230 volatile struct nop_cmd_struct
*nop_cmds
[2];
232 volatile struct nop_cmd_struct
*nop_cmds
[NUM_XMIT_BUFFS
];
234 volatile int nop_point
,num_recv_buffs
;
235 volatile char *xmit_cbuffs
[NUM_XMIT_BUFFS
];
236 volatile int xmit_count
,xmit_last
;
239 /**********************************************
242 static int ni52_close(struct net_device
*dev
)
244 free_irq(dev
->irq
, dev
);
246 ni_reset586(); /* the hard way to stop the receiver */
248 netif_stop_queue(dev
);
254 /**********************************************
257 static int ni52_open(struct net_device
*dev
)
265 if(request_irq(dev
->irq
, &ni52_interrupt
,0,"ni5210",dev
))
271 netif_start_queue(dev
);
274 return 0; /* most done by init */
277 /**********************************************
278 * Check to see if there's an 82586 out there.
280 static int check586(struct net_device
*dev
,char *where
,unsigned size
)
283 struct priv
*p
= /* (struct priv *) dev->priv*/ &pb
;
287 p
->base
= (unsigned long) bus_to_virt((unsigned long)where
) + size
- 0x01000000;
288 p
->memtop
= bus_to_virt((unsigned long)where
) + size
;
289 p
->scp
= (struct scp_struct
*)(p
->base
+ SCP_DEFAULT_ADDRESS
);
290 memset((char *)p
->scp
,0, sizeof(struct scp_struct
));
291 for(i
=0;i
<sizeof(struct scp_struct
);i
++) /* memory was writeable? */
292 if(((char *)p
->scp
)[i
])
294 p
->scp
->sysbus
= SYSBUSVAL
; /* 1 = 8Bit-Bus, 0 = 16 Bit */
295 if(p
->scp
->sysbus
!= SYSBUSVAL
)
298 iscp_addrs
[0] = bus_to_virt((unsigned long)where
);
299 iscp_addrs
[1]= (char *) p
->scp
- sizeof(struct iscp_struct
);
303 p
->iscp
= (struct iscp_struct
*) iscp_addrs
[i
];
304 memset((char *)p
->iscp
,0, sizeof(struct iscp_struct
));
306 p
->scp
->iscp
= make24(p
->iscp
);
311 DELAY(1); /* wait a while... */
313 if(p
->iscp
->busy
) /* i82586 clears 'busy' after successful init */
319 /******************************************************************
320 * set iscp at the right place, called by ni52_probe1 and open586.
322 void alloc586(struct net_device
*dev
)
324 struct priv
*p
= (struct priv
*) dev
->priv
;
329 p
->scp
= (struct scp_struct
*) (p
->base
+ SCP_DEFAULT_ADDRESS
);
330 p
->scb
= (struct scb_struct
*) bus_to_virt(dev
->mem_start
);
331 p
->iscp
= (struct iscp_struct
*) ((char *)p
->scp
- sizeof(struct iscp_struct
));
333 memset((char *) p
->iscp
,0,sizeof(struct iscp_struct
));
334 memset((char *) p
->scp
,0,sizeof(struct scp_struct
));
336 p
->scp
->iscp
= make24(p
->iscp
);
337 p
->scp
->sysbus
= SYSBUSVAL
;
338 p
->iscp
->scb_offset
= make16(p
->scb
);
347 printk("%s: Init-Problems (alloc).\n",dev
->name
);
351 memset((char *)p
->scb
,0,sizeof(struct scb_struct
));
354 /**********************************************
355 * probe the ni5210-card
357 int __init
ni52_probe(struct net_device
*dev
)
361 static int ports
[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
363 int base_addr
= dev
->base_addr
;
365 if (base_addr
> 0x1ff) { /* Check a single specified location. */
366 if( (inb(base_addr
+NI52_MAGIC1
) == NI52_MAGICVAL1
) &&
367 (inb(base_addr
+NI52_MAGIC2
) == NI52_MAGICVAL2
))
368 return ni52_probe1(dev
, base_addr
);
369 } else if (base_addr
> 0) /* Don't probe at all. */
373 printk("%s: no autoprobing allowed for modules.\n",dev
->name
);
375 for (port
= ports
; *port
; port
++) {
377 if (check_region(ioaddr
, NI52_TOTAL_SIZE
))
379 if( !(inb(ioaddr
+NI52_MAGIC1
) == NI52_MAGICVAL1
) ||
380 !(inb(ioaddr
+NI52_MAGIC2
) == NI52_MAGICVAL2
))
383 dev
->base_addr
= ioaddr
;
384 if (ni52_probe1(dev
, ioaddr
) == 0)
389 for(dev
->base_addr
=0x200;dev
->base_addr
<0x400;dev
->base_addr
+=8)
391 int ioaddr
= dev
->base_addr
;
392 if (check_region(ioaddr
, NI52_TOTAL_SIZE
))
394 if( !(inb(ioaddr
+NI52_MAGIC1
) == NI52_MAGICVAL1
) ||
395 !(inb(ioaddr
+NI52_MAGIC2
) == NI52_MAGICVAL2
))
397 if (ni52_probe1(dev
, ioaddr
) == 0)
404 dev
->base_addr
= base_addr
;
408 static int __init
ni52_probe1(struct net_device
*dev
,int ioaddr
)
412 for(i
=0;i
<ETH_ALEN
;i
++)
413 dev
->dev_addr
[i
] = inb(dev
->base_addr
+i
);
415 if(dev
->dev_addr
[0] != NI52_ADDR0
|| dev
->dev_addr
[1] != NI52_ADDR1
416 || dev
->dev_addr
[2] != NI52_ADDR2
)
419 printk("%s: NI5210 found at %#3lx, ",dev
->name
,dev
->base_addr
);
421 request_region(ioaddr
,NI52_TOTAL_SIZE
,"ni5210");
424 * check (or search) IO-Memory, 8K and 16K
427 size
= dev
->mem_end
- dev
->mem_start
;
428 if(size
!= 0x2000 && size
!= 0x4000)
430 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev
->name
,size
);
433 if(!check586(dev
,(char *) dev
->mem_start
,size
))
435 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev
->mem_start
,size
);
439 if(dev
->mem_start
!= 0) /* no auto-mem-probe */
441 size
= 0x4000; /* check for 16K mem */
442 if(!check586(dev
,(char *) dev
->mem_start
,size
)) {
443 size
= 0x2000; /* check for 8K mem */
444 if(!check586(dev
,(char *) dev
->mem_start
,size
)) {
445 printk("?memprobe, Can't find memory at 0x%lx!\n",dev
->mem_start
);
452 static long memaddrs
[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000,
453 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 };
457 printk("?memprobe, Can't find io-memory!\n");
460 dev
->mem_start
= memaddrs
[i
];
461 size
= 0x2000; /* check for 8K mem */
462 if(check586(dev
,(char *)dev
->mem_start
,size
)) /* 8K-check */
464 size
= 0x4000; /* check for 16K mem */
465 if(check586(dev
,(char *)dev
->mem_start
,size
)) /* 16K-check */
469 dev
->mem_end
= dev
->mem_start
+ size
; /* set mem_end showed by 'ifconfig' */
472 dev
->priv
= (void *) kmalloc(sizeof(struct priv
),GFP_KERNEL
);
473 if(dev
->priv
== NULL
)
475 printk("%s: Ooops .. can't allocate private driver memory.\n",dev
->name
);
478 /* warning: we don't free it on errors */
479 memset((char *) dev
->priv
,0,sizeof(struct priv
));
481 ((struct priv
*) (dev
->priv
))->memtop
= bus_to_virt(dev
->mem_start
) + size
;
482 ((struct priv
*) (dev
->priv
))->base
= (unsigned long) bus_to_virt(dev
->mem_start
) + size
- 0x01000000;
485 /* set number of receive-buffs according to memsize */
487 ((struct priv
*) dev
->priv
)->num_recv_buffs
= NUM_RECV_BUFFS_8
;
489 ((struct priv
*) dev
->priv
)->num_recv_buffs
= NUM_RECV_BUFFS_16
;
491 printk("Memaddr: 0x%lx, Memsize: %d, ",dev
->mem_start
,size
);
498 if(!(dev
->irq
= autoirq_report(2)))
500 printk("?autoirq, Failed to detect IRQ line!\n");
503 printk("IRQ %d (autodetected).\n",dev
->irq
);
508 printk("IRQ %d (assigned and not checked!).\n",dev
->irq
);
511 dev
->open
= ni52_open
;
512 dev
->stop
= ni52_close
;
513 dev
->get_stats
= ni52_get_stats
;
514 dev
->tx_timeout
= ni52_timeout
;
515 dev
->watchdog_timeo
= HZ
/20;
516 dev
->hard_start_xmit
= ni52_send_packet
;
517 dev
->set_multicast_list
= set_multicast_list
;
526 /**********************************************
527 * init the chip (ni52-interrupt should be disabled?!)
528 * needs a correct 'allocated' memory
531 static int init586(struct net_device
*dev
)
535 struct priv
*p
= (struct priv
*) dev
->priv
;
536 volatile struct configure_cmd_struct
*cfg_cmd
;
537 volatile struct iasetup_cmd_struct
*ias_cmd
;
538 volatile struct tdr_cmd_struct
*tdr_cmd
;
539 volatile struct mcsetup_cmd_struct
*mc_cmd
;
540 struct dev_mc_list
*dmi
=dev
->mc_list
;
541 int num_addrs
=dev
->mc_count
;
543 ptr
= (void *) ((char *)p
->scb
+ sizeof(struct scb_struct
));
545 cfg_cmd
= (struct configure_cmd_struct
*)ptr
; /* configure-command */
546 cfg_cmd
->cmd_status
= 0;
547 cfg_cmd
->cmd_cmd
= CMD_CONFIGURE
| CMD_LAST
;
548 cfg_cmd
->cmd_link
= 0xffff;
550 cfg_cmd
->byte_cnt
= 0x0a; /* number of cfg bytes */
551 cfg_cmd
->fifo
= fifo
; /* fifo-limit (8=tx:32/rx:64) */
552 cfg_cmd
->sav_bf
= 0x40; /* hold or discard bad recv frames (bit 7) */
553 cfg_cmd
->adr_len
= 0x2e; /* addr_len |!src_insert |pre-len |loopback */
554 cfg_cmd
->priority
= 0x00;
556 cfg_cmd
->time_low
= 0x00;
557 cfg_cmd
->time_high
= 0xf2;
558 cfg_cmd
->promisc
= 0;
559 if(dev
->flags
& IFF_ALLMULTI
) {
560 int len
= ((char *) p
->iscp
- (char *) ptr
- 8) / 6;
561 if(num_addrs
> len
) {
562 printk("%s: switching to promisc. mode\n",dev
->name
);
563 dev
->flags
|=IFF_PROMISC
;
566 if(dev
->flags
&IFF_PROMISC
)
569 dev
->flags
|=IFF_PROMISC
;
571 cfg_cmd
->carr_coll
= 0x00;
573 p
->scb
->cbl_offset
= make16(cfg_cmd
);
576 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
579 WAIT_4_STAT_COMPL(cfg_cmd
);
581 if((cfg_cmd
->cmd_status
& (STAT_OK
|STAT_COMPL
)) != (STAT_COMPL
|STAT_OK
))
583 printk("%s: configure command failed: %x\n",dev
->name
,cfg_cmd
->cmd_status
);
588 * individual address setup
591 ias_cmd
= (struct iasetup_cmd_struct
*)ptr
;
593 ias_cmd
->cmd_status
= 0;
594 ias_cmd
->cmd_cmd
= CMD_IASETUP
| CMD_LAST
;
595 ias_cmd
->cmd_link
= 0xffff;
597 memcpy((char *)&ias_cmd
->iaddr
,(char *) dev
->dev_addr
,ETH_ALEN
);
599 p
->scb
->cbl_offset
= make16(ias_cmd
);
601 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
604 WAIT_4_STAT_COMPL(ias_cmd
);
606 if((ias_cmd
->cmd_status
& (STAT_OK
|STAT_COMPL
)) != (STAT_OK
|STAT_COMPL
)) {
607 printk("%s (ni52): individual address setup command failed: %04x\n",dev
->name
,ias_cmd
->cmd_status
);
612 * TDR, wire check .. e.g. no resistor e.t.c
615 tdr_cmd
= (struct tdr_cmd_struct
*)ptr
;
617 tdr_cmd
->cmd_status
= 0;
618 tdr_cmd
->cmd_cmd
= CMD_TDR
| CMD_LAST
;
619 tdr_cmd
->cmd_link
= 0xffff;
622 p
->scb
->cbl_offset
= make16(tdr_cmd
);
623 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
626 WAIT_4_STAT_COMPL(tdr_cmd
);
628 if(!(tdr_cmd
->cmd_status
& STAT_COMPL
))
630 printk("%s: Problems while running the TDR.\n",dev
->name
);
634 DELAY_16(); /* wait for result */
635 result
= tdr_cmd
->status
;
637 p
->scb
->cmd_cuc
= p
->scb
->cus
& STAT_MASK
;
638 ni_attn586(); /* ack the interrupts */
640 if(result
& TDR_LNK_OK
)
642 else if(result
& TDR_XCVR_PRB
)
643 printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev
->name
);
644 else if(result
& TDR_ET_OPN
)
645 printk("%s: TDR: No correct termination %d clocks away.\n",dev
->name
,result
& TDR_TIMEMASK
);
646 else if(result
& TDR_ET_SRT
)
648 if (result
& TDR_TIMEMASK
) /* time == 0 -> strange :-) */
649 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev
->name
,result
& TDR_TIMEMASK
);
652 printk("%s: TDR: Unknown status %04x\n",dev
->name
,result
);
658 if(num_addrs
&& !(dev
->flags
& IFF_PROMISC
) )
660 mc_cmd
= (struct mcsetup_cmd_struct
*) ptr
;
661 mc_cmd
->cmd_status
= 0;
662 mc_cmd
->cmd_cmd
= CMD_MCSETUP
| CMD_LAST
;
663 mc_cmd
->cmd_link
= 0xffff;
664 mc_cmd
->mc_cnt
= num_addrs
* 6;
666 for(i
=0;i
<num_addrs
;i
++,dmi
=dmi
->next
)
667 memcpy((char *) mc_cmd
->mc_list
[i
], dmi
->dmi_addr
,6);
669 p
->scb
->cbl_offset
= make16(mc_cmd
);
670 p
->scb
->cmd_cuc
= CUC_START
;
673 WAIT_4_STAT_COMPL(mc_cmd
);
675 if( (mc_cmd
->cmd_status
& (STAT_COMPL
|STAT_OK
)) != (STAT_COMPL
|STAT_OK
) )
676 printk("%s: Can't apply multicast-address-list.\n",dev
->name
);
680 * alloc nop/xmit-cmds
682 #if (NUM_XMIT_BUFFS == 1)
685 p
->nop_cmds
[i
] = (struct nop_cmd_struct
*)ptr
;
686 p
->nop_cmds
[i
]->cmd_cmd
= CMD_NOP
;
687 p
->nop_cmds
[i
]->cmd_status
= 0;
688 p
->nop_cmds
[i
]->cmd_link
= make16((p
->nop_cmds
[i
]));
689 ptr
= (char *) ptr
+ sizeof(struct nop_cmd_struct
);
692 for(i
=0;i
<NUM_XMIT_BUFFS
;i
++)
694 p
->nop_cmds
[i
] = (struct nop_cmd_struct
*)ptr
;
695 p
->nop_cmds
[i
]->cmd_cmd
= CMD_NOP
;
696 p
->nop_cmds
[i
]->cmd_status
= 0;
697 p
->nop_cmds
[i
]->cmd_link
= make16((p
->nop_cmds
[i
]));
698 ptr
= (char *) ptr
+ sizeof(struct nop_cmd_struct
);
702 ptr
= alloc_rfa(dev
,(void *)ptr
); /* init receive-frame-area */
705 * alloc xmit-buffs / init xmit_cmds
707 for(i
=0;i
<NUM_XMIT_BUFFS
;i
++)
709 p
->xmit_cmds
[i
] = (struct transmit_cmd_struct
*)ptr
; /*transmit cmd/buff 0*/
710 ptr
= (char *) ptr
+ sizeof(struct transmit_cmd_struct
);
711 p
->xmit_cbuffs
[i
] = (char *)ptr
; /* char-buffs */
712 ptr
= (char *) ptr
+ XMIT_BUFF_SIZE
;
713 p
->xmit_buffs
[i
] = (struct tbd_struct
*)ptr
; /* TBD */
714 ptr
= (char *) ptr
+ sizeof(struct tbd_struct
);
715 if((void *)ptr
> (void *)p
->iscp
)
717 printk("%s: not enough shared-mem for your configuration!\n",dev
->name
);
720 memset((char *)(p
->xmit_cmds
[i
]) ,0, sizeof(struct transmit_cmd_struct
));
721 memset((char *)(p
->xmit_buffs
[i
]),0, sizeof(struct tbd_struct
));
722 p
->xmit_cmds
[i
]->cmd_link
= make16(p
->nop_cmds
[(i
+1)%NUM_XMIT_BUFFS
]);
723 p
->xmit_cmds
[i
]->cmd_status
= STAT_COMPL
;
724 p
->xmit_cmds
[i
]->cmd_cmd
= CMD_XMIT
| CMD_INT
;
725 p
->xmit_cmds
[i
]->tbd_offset
= make16((p
->xmit_buffs
[i
]));
726 p
->xmit_buffs
[i
]->next
= 0xffff;
727 p
->xmit_buffs
[i
]->buffer
= make24((p
->xmit_cbuffs
[i
]));
732 #ifndef NO_NOPCOMMANDS
737 * 'start transmitter'
739 #ifndef NO_NOPCOMMANDS
740 p
->scb
->cbl_offset
= make16(p
->nop_cmds
[0]);
741 p
->scb
->cmd_cuc
= CUC_START
;
745 p
->xmit_cmds
[0]->cmd_link
= make16(p
->xmit_cmds
[0]);
746 p
->xmit_cmds
[0]->cmd_cmd
= CMD_XMIT
| CMD_SUSPEND
| CMD_INT
;
752 p
->scb
->cmd_cuc
= p
->scb
->cus
& STAT_MASK
;
761 /******************************************************
762 * This is a helper routine for ni52_rnr_int() and init586().
763 * It sets up the Receive Frame Area (RFA).
766 static void *alloc_rfa(struct net_device
*dev
,void *ptr
)
768 volatile struct rfd_struct
*rfd
= (struct rfd_struct
*)ptr
;
769 volatile struct rbd_struct
*rbd
;
771 struct priv
*p
= (struct priv
*) dev
->priv
;
773 memset((char *) rfd
,0,sizeof(struct rfd_struct
)*(p
->num_recv_buffs
+rfdadd
));
776 for(i
= 0; i
< (p
->num_recv_buffs
+rfdadd
); i
++) {
777 rfd
[i
].next
= make16(rfd
+ (i
+1) % (p
->num_recv_buffs
+rfdadd
) );
778 rfd
[i
].rbd_offset
= 0xffff;
780 rfd
[p
->num_recv_buffs
-1+rfdadd
].last
= RFD_SUSP
; /* RU suspend */
782 ptr
= (void *) (rfd
+ (p
->num_recv_buffs
+ rfdadd
) );
784 rbd
= (struct rbd_struct
*) ptr
;
785 ptr
= (void *) (rbd
+ p
->num_recv_buffs
);
787 /* clr descriptors */
788 memset((char *) rbd
,0,sizeof(struct rbd_struct
)*(p
->num_recv_buffs
));
790 for(i
=0;i
<p
->num_recv_buffs
;i
++)
792 rbd
[i
].next
= make16((rbd
+ (i
+1) % p
->num_recv_buffs
));
793 rbd
[i
].size
= RECV_BUFF_SIZE
;
794 rbd
[i
].buffer
= make24(ptr
);
795 ptr
= (char *) ptr
+ RECV_BUFF_SIZE
;
798 p
->rfd_top
= p
->rfd_first
;
799 p
->rfd_last
= p
->rfd_first
+ (p
->num_recv_buffs
- 1 + rfdadd
);
801 p
->scb
->rfa_offset
= make16(p
->rfd_first
);
802 p
->rfd_first
->rbd_offset
= make16(rbd
);
808 /**************************************************
809 * Interrupt Handler ...
812 static void ni52_interrupt(int irq
,void *dev_id
,struct pt_regs
*reg_ptr
)
814 struct net_device
*dev
= dev_id
;
820 printk ("ni5210-interrupt: irq %d for unknown device.\n",irq
);
823 p
= (struct priv
*) dev
->priv
;
828 WAIT_4_SCB_CMD(); /* wait for last command */
830 while((stat
=p
->scb
->cus
& STAT_MASK
))
832 p
->scb
->cmd_cuc
= stat
;
835 if(stat
& STAT_FR
) /* received a frame */
838 if(stat
& STAT_RNR
) /* RU went 'not ready' */
841 if(p
->scb
->rus
& RU_SUSPEND
) /* special case: RU_SUSPEND */
844 p
->scb
->cmd_ruc
= RUC_RESUME
;
846 WAIT_4_SCB_CMD_RUC();
850 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev
->name
,(int) stat
,(int) p
->scb
->rus
);
855 if(stat
& STAT_CX
) /* command with I-bit set complete */
858 #ifndef NO_NOPCOMMANDS
859 if(stat
& STAT_CNA
) /* CU went 'not ready' */
861 if(netif_running(dev
))
862 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev
->name
,(int) stat
,(int) p
->scb
->cus
);
869 WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */
870 if(p
->scb
->cmd_cuc
) /* timed out? */
872 printk("%s: Acknowledge timed out.\n",dev
->name
);
882 /*******************************************************
886 static void ni52_rcv_int(struct net_device
*dev
)
889 unsigned short totlen
;
891 struct rbd_struct
*rbd
;
892 struct priv
*p
= (struct priv
*) dev
->priv
;
897 for(;(status
= p
->rfd_top
->stat_high
) & RFD_COMPL
;)
899 rbd
= (struct rbd_struct
*) make32(p
->rfd_top
->rbd_offset
);
901 if(status
& RFD_OK
) /* frame received without error? */
903 if( (totlen
= rbd
->status
) & RBD_LAST
) /* the first and the last buffer? */
905 totlen
&= RBD_MASK
; /* length of this frame */
907 skb
= (struct sk_buff
*) dev_alloc_skb(totlen
+2);
913 eth_copy_and_sum(skb
,(char *) p
->base
+(unsigned long) rbd
->buffer
,totlen
,0);
914 skb
->protocol
=eth_type_trans(skb
,dev
);
916 p
->stats
.rx_packets
++;
919 p
->stats
.rx_dropped
++;
924 /* free all RBD's until RBD_LAST is set */
926 while(!((rstat
=rbd
->status
) & RBD_LAST
))
928 totlen
+= rstat
& RBD_MASK
;
931 printk("%s: Whoops .. no end mark in RBD list\n",dev
->name
);
935 rbd
= (struct rbd_struct
*) make32(rbd
->next
);
937 totlen
+= rstat
& RBD_MASK
;
939 printk("%s: received oversized frame! length: %d\n",dev
->name
,totlen
);
940 p
->stats
.rx_dropped
++;
943 else /* frame !(ok), only with 'save-bad-frames' */
945 printk("%s: oops! rfd-error-status: %04x\n",dev
->name
,status
);
946 p
->stats
.rx_errors
++;
948 p
->rfd_top
->stat_high
= 0;
949 p
->rfd_top
->last
= RFD_SUSP
; /* maybe exchange by RFD_LAST */
950 p
->rfd_top
->rbd_offset
= 0xffff;
951 p
->rfd_last
->last
= 0; /* delete RFD_SUSP */
952 p
->rfd_last
= p
->rfd_top
;
953 p
->rfd_top
= (struct rfd_struct
*) make32(p
->rfd_top
->next
); /* step to next RFD */
954 p
->scb
->rfa_offset
= make16(p
->rfd_top
);
963 p
->scb
->cmd_ruc
= RUC_RESUME
;
965 WAIT_4_SCB_CMD_RUC();
973 if(p
->rfd_top
->status
)
977 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev
->name
);
986 volatile struct rfd_struct
*rfds
=p
->rfd_top
;
987 volatile struct rbd_struct
*rbds
;
988 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev
->name
,status
,old_at_least
);
989 for(i
=0;i
< (p
->num_recv_buffs
+4);i
++)
991 rbds
= (struct rbd_struct
*) make32(rfds
->rbd_offset
);
992 printk("%04x:%04x ",rfds
->status
,rbds
->status
);
993 rfds
= (struct rfd_struct
*) make32(rfds
->next
);
995 printk("\nerrs: %04x %04x stat: %04x\n",(int)p
->scb
->rsc_errs
,(int)p
->scb
->ovrn_errs
,(int)p
->scb
->status
);
996 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
);
998 old_at_least
= at_least_one
;
1005 /**********************************************************
1006 * handle 'Receiver went not ready'.
1009 static void ni52_rnr_int(struct net_device
*dev
)
1011 struct priv
*p
= (struct priv
*) dev
->priv
;
1013 p
->stats
.rx_errors
++;
1015 WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
1016 p
->scb
->cmd_ruc
= RUC_ABORT
; /* usually the RU is in the 'no resource'-state .. abort it now. */
1018 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
1020 alloc_rfa(dev
,(char *)p
->rfd_first
);
1021 /* maybe add a check here, before restarting the RU */
1022 startrecv586(dev
); /* restart RU */
1024 printk("%s: Receive-Unit restarted. Status: %04x\n",dev
->name
,p
->scb
->rus
);
1028 /**********************************************************
1029 * handle xmit - interrupt
1032 static void ni52_xmt_int(struct net_device
*dev
)
1035 struct priv
*p
= (struct priv
*) dev
->priv
;
1040 status
= p
->xmit_cmds
[p
->xmit_last
]->cmd_status
;
1041 if(!(status
& STAT_COMPL
))
1042 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev
->name
);
1044 if(status
& STAT_OK
)
1046 p
->stats
.tx_packets
++;
1047 p
->stats
.collisions
+= (status
& TCMD_MAXCOLLMASK
);
1051 p
->stats
.tx_errors
++;
1052 if(status
& TCMD_LATECOLL
) {
1053 printk("%s: late collision detected.\n",dev
->name
);
1054 p
->stats
.collisions
++;
1056 else if(status
& TCMD_NOCARRIER
) {
1057 p
->stats
.tx_carrier_errors
++;
1058 printk("%s: no carrier detected.\n",dev
->name
);
1060 else if(status
& TCMD_LOSTCTS
)
1061 printk("%s: loss of CTS detected.\n",dev
->name
);
1062 else if(status
& TCMD_UNDERRUN
) {
1063 p
->stats
.tx_fifo_errors
++;
1064 printk("%s: DMA underrun detected.\n",dev
->name
);
1066 else if(status
& TCMD_MAXCOLL
) {
1067 printk("%s: Max. collisions exceeded.\n",dev
->name
);
1068 p
->stats
.collisions
+= 16;
1072 #if (NUM_XMIT_BUFFS > 1)
1073 if( (++p
->xmit_last
) == NUM_XMIT_BUFFS
)
1076 netif_wake_queue(dev
);
1079 /***********************************************************
1080 * (re)start the receiver
1083 static void startrecv586(struct net_device
*dev
)
1085 struct priv
*p
= (struct priv
*) dev
->priv
;
1088 WAIT_4_SCB_CMD_RUC();
1089 p
->scb
->rfa_offset
= make16(p
->rfd_first
);
1090 p
->scb
->cmd_ruc
= RUC_START
;
1091 ni_attn586(); /* start cmd. */
1092 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
1095 static void ni52_timeout(struct net_device
*dev
)
1097 struct priv
*p
= (struct priv
*) dev
->priv
;
1098 #ifndef NO_NOPCOMMANDS
1099 if(p
->scb
->cus
& CU_ACTIVE
) /* COMMAND-UNIT active? */
1101 netif_wake_queue(dev
);
1103 printk("%s: strange ... timeout with CU active?!?\n",dev
->name
);
1104 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
);
1106 p
->scb
->cmd_cuc
= CUC_ABORT
;
1109 p
->scb
->cbl_offset
= make16(p
->nop_cmds
[p
->nop_point
]);
1110 p
->scb
->cmd_cuc
= CUC_START
;
1113 dev
->trans_start
= jiffies
;
1119 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev
->name
,p
->scb
->cus
);
1120 printk("%s: command-stats: %04x %04x\n",dev
->name
,p
->xmit_cmds
[0]->cmd_status
,p
->xmit_cmds
[1]->cmd_status
);
1121 printk("%s: check, whether you set the right interrupt number!\n",dev
->name
);
1126 dev
->trans_start
= jiffies
;
1129 /******************************************************
1133 static int ni52_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1136 #ifndef NO_NOPCOMMANDS
1139 struct priv
*p
= (struct priv
*) dev
->priv
;
1141 if(skb
->len
> XMIT_BUFF_SIZE
)
1143 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev
->name
,XMIT_BUFF_SIZE
,skb
->len
);
1147 netif_stop_queue(dev
);
1149 #if(NUM_XMIT_BUFFS > 1)
1150 if(test_and_set_bit(0,(void *) &p
->lock
)) {
1151 printk("%s: Queue was locked\n",dev
->name
);
1157 memcpy((char *)p
->xmit_cbuffs
[p
->xmit_count
],(char *)(skb
->data
),skb
->len
);
1158 len
= (ETH_ZLEN
< skb
->len
) ? skb
->len
: ETH_ZLEN
;
1160 #if (NUM_XMIT_BUFFS == 1)
1161 # ifdef NO_NOPCOMMANDS
1164 if(p
->scb
->cus
& CU_ACTIVE
)
1166 printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev
->name
);
1167 printk("%s: stat: %04x %04x\n",dev
->name
,p
->scb
->cus
,p
->xmit_cmds
[0]->cmd_status
);
1171 p
->xmit_buffs
[0]->size
= TBD_LAST
| len
;
1174 p
->xmit_cmds
[0]->cmd_status
= 0;
1176 if( (p
->scb
->cus
& CU_STATUS
) == CU_SUSPEND
)
1177 p
->scb
->cmd_cuc
= CUC_RESUME
;
1180 p
->scb
->cbl_offset
= make16(p
->xmit_cmds
[0]);
1181 p
->scb
->cmd_cuc
= CUC_START
;
1185 dev
->trans_start
= jiffies
;
1189 if( (p
->scb
->cus
& CU_ACTIVE
)) /* test it, because CU sometimes doesn't start immediately */
1191 if(p
->xmit_cmds
[0]->cmd_status
)
1194 printk("%s: Can't start transmit-command.\n",dev
->name
);
1197 next_nop
= (p
->nop_point
+ 1) & 0x1;
1198 p
->xmit_buffs
[0]->size
= TBD_LAST
| len
;
1200 p
->xmit_cmds
[0]->cmd_link
= p
->nop_cmds
[next_nop
]->cmd_link
1201 = make16((p
->nop_cmds
[next_nop
]));
1202 p
->xmit_cmds
[0]->cmd_status
= p
->nop_cmds
[next_nop
]->cmd_status
= 0;
1204 p
->nop_cmds
[p
->nop_point
]->cmd_link
= make16((p
->xmit_cmds
[0]));
1205 dev
->trans_start
= jiffies
;
1206 p
->nop_point
= next_nop
;
1210 p
->xmit_buffs
[p
->xmit_count
]->size
= TBD_LAST
| len
;
1211 if( (next_nop
= p
->xmit_count
+ 1) == NUM_XMIT_BUFFS
)
1214 p
->xmit_cmds
[p
->xmit_count
]->cmd_status
= 0;
1215 /* linkpointer of xmit-command already points to next nop cmd */
1216 p
->nop_cmds
[next_nop
]->cmd_link
= make16((p
->nop_cmds
[next_nop
]));
1217 p
->nop_cmds
[next_nop
]->cmd_status
= 0;
1219 p
->nop_cmds
[p
->xmit_count
]->cmd_link
= make16((p
->xmit_cmds
[p
->xmit_count
]));
1220 dev
->trans_start
= jiffies
;
1221 p
->xmit_count
= next_nop
;
1224 unsigned long flags
;
1227 if(p
->xmit_count
!= p
->xmit_last
)
1228 netif_wake_queue(dev
);
1230 restore_flags(flags
);
1238 /*******************************************
1239 * Someone wanna have the statistics
1242 static struct net_device_stats
*ni52_get_stats(struct net_device
*dev
)
1244 struct priv
*p
= (struct priv
*) dev
->priv
;
1245 unsigned short crc
,aln
,rsc
,ovrn
;
1247 crc
= p
->scb
->crc_errs
; /* get error-statistic from the ni82586 */
1248 p
->scb
->crc_errs
= 0;
1249 aln
= p
->scb
->aln_errs
;
1250 p
->scb
->aln_errs
= 0;
1251 rsc
= p
->scb
->rsc_errs
;
1252 p
->scb
->rsc_errs
= 0;
1253 ovrn
= p
->scb
->ovrn_errs
;
1254 p
->scb
->ovrn_errs
= 0;
1256 p
->stats
.rx_crc_errors
+= crc
;
1257 p
->stats
.rx_fifo_errors
+= ovrn
;
1258 p
->stats
.rx_frame_errors
+= aln
;
1259 p
->stats
.rx_dropped
+= rsc
;
1264 /********************************************************
1268 static void set_multicast_list(struct net_device
*dev
)
1270 netif_stop_queue(dev
);
1276 netif_wake_queue(dev
);
1280 static struct net_device dev_ni52
= {
1281 "", /* device name inserted by net_init.c */
1283 0x300, 9, /* I/O address, IRQ */
1284 0, 0, 0, NULL
, ni52_probe
};
1286 /* set: io,irq,memstart,memend or set it when calling insmod */
1289 long memstart
=0; /* e.g 0xd0000 */
1290 long memend
=0; /* e.g 0xd4000 */
1292 MODULE_PARM(io
, "i");
1293 MODULE_PARM(irq
, "i");
1294 MODULE_PARM(memstart
, "l");
1295 MODULE_PARM(memend
, "l");
1297 int init_module(void)
1299 if(io
<= 0x0 || !memend
|| !memstart
|| irq
< 2) {
1300 printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
1304 dev_ni52
.base_addr
= io
;
1305 dev_ni52
.mem_end
= memend
;
1306 dev_ni52
.mem_start
= memstart
;
1307 if (register_netdev(&dev_ni52
) != 0)
1312 void cleanup_module(void)
1314 release_region(dev_ni52
.base_addr
, NI52_TOTAL_SIZE
);
1315 unregister_netdev(&dev_ni52
);
1316 kfree(dev_ni52
.priv
);
1317 dev_ni52
.priv
= NULL
;
1323 * DUMP .. we expect a not running CMD unit and enough space
1325 void ni52_dump(struct net_device
*dev
,void *ptr
)
1327 struct priv
*p
= (struct priv
*) dev
->priv
;
1328 struct dump_cmd_struct
*dump_cmd
= (struct dump_cmd_struct
*) ptr
;
1331 p
->scb
->cmd_cuc
= CUC_ABORT
;
1334 WAIT_4_SCB_CMD_RUC();
1336 dump_cmd
->cmd_status
= 0;
1337 dump_cmd
->cmd_cmd
= CMD_DUMP
| CMD_LAST
;
1338 dump_cmd
->dump_offset
= make16((dump_cmd
+ 1));
1339 dump_cmd
->cmd_link
= 0xffff;
1341 p
->scb
->cbl_offset
= make16(dump_cmd
);
1342 p
->scb
->cmd_cuc
= CUC_START
;
1344 WAIT_4_STAT_COMPL(dump_cmd
);
1346 if( (dump_cmd
->cmd_status
& (STAT_COMPL
|STAT_OK
)) != (STAT_COMPL
|STAT_OK
) )
1347 printk("%s: Can't get dump information.\n",dev
->name
);
1349 for(i
=0;i
<170;i
++) {
1350 printk("%02x ",(int) ((unsigned char *) (dump_cmd
+ 1))[i
]);
1359 * END: linux/drivers/net/ni52.c