2 * ni6510 (am7990 'lance' chip) driver for Linux-net-3
3 * BETAcode v0.71 (96/09/29) for 2.0.0 (or later)
4 * copyrights (c) 1994,1995,1996 by M.Hipp
6 * This driver can handle the old ni6510 board and the newer ni6510
7 * EtherBlaster. (probably it also works with every full NE2100
10 * To compile as module, type:
11 * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c
12 * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7
14 * This is an extension to the Linux operating system, and is covered by the
15 * same GNU General Public License that covers the Linux-kernel.
17 * comments/bugs/suggestions can be sent to:
19 * email: hippm@informatik.uni-tuebingen.de
22 * some things are from the 'ni6510-packet-driver for dos by Russ Nelson'
23 * and from the original drivers by D.Becker
26 * - on some PCI boards (including my own) the card/board/ISA-bridge has
27 * problems with bus master DMA. This results in lotsa overruns.
28 * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef
29 * the XMT and RCV_VIA_SKB option .. this reduces driver performance.
30 * Or just play with your BIOS options to optimize ISA-DMA access.
31 * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE
32 * defines -> please report me your experience then
33 * - Harald reported for ASUS SP3G mainboards, that you should use
34 * the 'optimal settings' from the user's manual on page 3-12!
37 * thanx to Jason Sullivan for sending me a ni6510 card!
38 * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig
40 * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB)
41 * average: FTP -> 8384421 bytes received in 8.5 seconds
42 * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS)
43 * peak: FTP -> 8384421 bytes received in 7.5 seconds
44 * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS)
48 * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK)
49 * 96.Sept.29: virt_to_bus stuff added for new memory modell
50 * 96.April.29: Added Harald Koenig's Patches (MH)
51 * 96.April.13: enhanced error handling .. more tests (MH)
52 * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH)
53 * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH)
54 * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH)
55 * hopefully no more 16MB limit
57 * 95.Nov.18: multicast tweaked (AC).
59 * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH)
61 * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH)
64 #include <linux/kernel.h>
65 #include <linux/string.h>
66 #include <linux/errno.h>
67 #include <linux/ioport.h>
68 #include <linux/slab.h>
69 #include <linux/interrupt.h>
70 #include <linux/delay.h>
71 #include <linux/init.h>
72 #include <linux/netdevice.h>
73 #include <linux/etherdevice.h>
74 #include <linux/skbuff.h>
75 #include <linux/module.h>
76 #include <linux/bitops.h>
84 * the current setting allows an acceptable performance
85 * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in
86 * the header of this file
87 * 'invert' the defines for max. performance. This may cause DMA problems
88 * on some boards (e.g on my ASUS SP3G)
92 #define RCV_PARANOIA_CHECK
94 #define MID_PERFORMANCE
96 #if defined( LOW_PERFORMANCE )
97 static int isa0
=7,isa1
=7,csr80
=0x0c10;
98 #elif defined( MID_PERFORMANCE )
99 static int isa0
=5,isa1
=5,csr80
=0x2810;
100 #else /* high performance */
101 static int isa0
=4,isa1
=4,csr80
=0x0017;
105 * a few card/vendor specific defines
107 #define NI65_ID0 0x00
108 #define NI65_ID1 0x55
109 #define NI65_EB_ID0 0x52
110 #define NI65_EB_ID1 0x44
111 #define NE2100_ID0 0x57
112 #define NE2100_ID1 0x57
114 #define PORT p->cmdr_addr
117 * buffer configuration
121 #define RMDNUMMASK 0x80000000
124 #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */
129 #define TMDNUMMASK 0x00000000
132 #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */
135 /* slightly oversized */
136 #define R_BUF_SIZE 1544
137 #define T_BUF_SIZE 1544
140 * lance register defines
142 #define L_DATAREG 0x00
143 #define L_ADDRREG 0x02
145 #define L_CONFIG 0x05
149 * to access the lance/am7990-regs, you have to write
150 * reg-number into L_ADDRREG, then you can access it using L_DATAREG
157 #define INIT_RING_BEFORE_START 0x1
158 #define FULL_RESET_ON_ERROR 0x2
161 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \
162 outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
163 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\
166 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);}
168 #define writedatareg(val) { writereg(val,CSR0); }
171 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);}
172 #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG))
173 #define writedatareg(val) { writereg(val,CSR0); }
176 static unsigned char ni_vendor
[] = { 0x02,0x07,0x01 };
179 unsigned char id0
,id1
;
184 unsigned char *vendor_id
;
195 .vendor_id
= ni_vendor
,
196 .cardname
= "ni6510",
206 .vendor_id
= ni_vendor
,
207 .cardname
= "ni6510 EtherBlaster",
218 .cardname
= "generic NE2100",
226 struct rmd rmdhead
[RMDNUM
];
227 struct tmd tmdhead
[TMDNUM
];
228 struct init_block ib
;
232 struct sk_buff
*recv_skb
[RMDNUM
];
234 void *recvbounce
[RMDNUM
];
237 struct sk_buff
*tmd_skb
[TMDNUM
];
239 void *tmdbounce
[TMDNUM
];
241 int lock
,xmit_queued
;
242 struct net_device_stats stats
;
247 spinlock_t ring_lock
;
250 static int ni65_probe1(struct net_device
*dev
,int);
251 static irqreturn_t
ni65_interrupt(int irq
, void * dev_id
);
252 static void ni65_recv_intr(struct net_device
*dev
,int);
253 static void ni65_xmit_intr(struct net_device
*dev
,int);
254 static int ni65_open(struct net_device
*dev
);
255 static int ni65_lance_reinit(struct net_device
*dev
);
256 static void ni65_init_lance(struct priv
*p
,unsigned char*,int,int);
257 static int ni65_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
258 static void ni65_timeout(struct net_device
*dev
);
259 static int ni65_close(struct net_device
*dev
);
260 static int ni65_alloc_buffer(struct net_device
*dev
);
261 static void ni65_free_buffer(struct priv
*p
);
262 static struct net_device_stats
*ni65_get_stats(struct net_device
*);
263 static void set_multicast_list(struct net_device
*dev
);
265 static int irqtab
[] __initdata
= { 9,12,15,5 }; /* irq config-translate */
266 static int dmatab
[] __initdata
= { 0,3,5,6,7 }; /* dma config-translate and autodetect */
268 static int debuglevel
= 1;
271 * set 'performance' registers .. we must STOP lance for that
273 static void ni65_set_performance(struct priv
*p
)
275 writereg(CSR0_STOP
| CSR0_CLRALL
,CSR0
); /* STOP */
277 if( !(cards
[p
->cardno
].config
& 0x02) )
280 outw(80,PORT
+L_ADDRREG
);
281 if(inw(PORT
+L_ADDRREG
) != 80)
284 writereg( (csr80
& 0x3fff) ,80); /* FIFO watermarks */
285 outw(0,PORT
+L_ADDRREG
);
286 outw((short)isa0
,PORT
+L_BUSIF
); /* write ISA 0: DMA_R : isa0 * 50ns */
287 outw(1,PORT
+L_ADDRREG
);
288 outw((short)isa1
,PORT
+L_BUSIF
); /* write ISA 1: DMA_W : isa1 * 50ns */
290 outw(CSR0
,PORT
+L_ADDRREG
); /* switch back to CSR0 */
294 * open interface (up)
296 static int ni65_open(struct net_device
*dev
)
298 struct priv
*p
= (struct priv
*) dev
->priv
;
299 int irqval
= request_irq(dev
->irq
, &ni65_interrupt
,0,
300 cards
[p
->cardno
].cardname
,dev
);
302 printk(KERN_ERR
"%s: unable to get IRQ %d (irqval=%d).\n",
303 dev
->name
,dev
->irq
, irqval
);
307 if(ni65_lance_reinit(dev
))
309 netif_start_queue(dev
);
314 free_irq(dev
->irq
,dev
);
320 * close interface (down)
322 static int ni65_close(struct net_device
*dev
)
324 struct priv
*p
= (struct priv
*) dev
->priv
;
326 netif_stop_queue(dev
);
328 outw(inw(PORT
+L_RESET
),PORT
+L_RESET
); /* that's the hard way */
333 for(i
=0;i
<TMDNUM
;i
++)
336 dev_kfree_skb(p
->tmd_skb
[i
]);
337 p
->tmd_skb
[i
] = NULL
;
342 free_irq(dev
->irq
,dev
);
346 static void cleanup_card(struct net_device
*dev
)
348 struct priv
*p
= (struct priv
*) dev
->priv
;
349 disable_dma(dev
->dma
);
351 release_region(dev
->base_addr
, cards
[p
->cardno
].total_size
);
355 /* set: io,irq,dma or set it when calling insmod */
361 * Probe The Card (not the lance-chip)
363 struct net_device
* __init
ni65_probe(int unit
)
365 struct net_device
*dev
= alloc_etherdev(0);
366 static int ports
[] = {0x360,0x300,0x320,0x340, 0};
371 return ERR_PTR(-ENOMEM
);
374 sprintf(dev
->name
, "eth%d", unit
);
375 netdev_boot_setup_check(dev
);
382 if (dev
->base_addr
> 0x1ff) { /* Check a single specified location. */
383 err
= ni65_probe1(dev
, dev
->base_addr
);
384 } else if (dev
->base_addr
> 0) { /* Don't probe at all. */
387 for (port
= ports
; *port
&& ni65_probe1(dev
, *port
); port
++)
395 err
= register_netdev(dev
);
407 * this is the real card probe ..
409 static int __init
ni65_probe1(struct net_device
*dev
,int ioaddr
)
418 for(i
=0;i
<NUM_CARDS
;i
++) {
419 if(!request_region(ioaddr
, cards
[i
].total_size
, cards
[i
].cardname
))
421 if(cards
[i
].id_offset
>= 0) {
422 if(inb(ioaddr
+cards
[i
].id_offset
+0) != cards
[i
].id0
||
423 inb(ioaddr
+cards
[i
].id_offset
+1) != cards
[i
].id1
) {
424 release_region(ioaddr
, cards
[i
].total_size
);
428 if(cards
[i
].vendor_id
) {
430 if(inb(ioaddr
+cards
[i
].addr_offset
+j
) != cards
[i
].vendor_id
[j
]) {
431 release_region(ioaddr
, cards
[i
].total_size
);
441 dev
->dev_addr
[j
] = inb(ioaddr
+cards
[i
].addr_offset
+j
);
443 if( (j
=ni65_alloc_buffer(dev
)) < 0) {
444 release_region(ioaddr
, cards
[i
].total_size
);
447 p
= (struct priv
*) dev
->priv
;
448 p
->cmdr_addr
= ioaddr
+ cards
[i
].cmd_offset
;
450 spin_lock_init(&p
->ring_lock
);
452 printk(KERN_INFO
"%s: %s found at %#3x, ", dev
->name
, cards
[p
->cardno
].cardname
, ioaddr
);
454 outw(inw(PORT
+L_RESET
),PORT
+L_RESET
); /* first: reset the card */
455 if( (j
=readreg(CSR0
)) != 0x4) {
457 printk(KERN_ERR
"%s: Can't RESET card: %04x\n", dev
->name
, j
);
459 release_region(ioaddr
, cards
[p
->cardno
].total_size
);
463 outw(88,PORT
+L_ADDRREG
);
464 if(inw(PORT
+L_ADDRREG
) == 88) {
466 v
= inw(PORT
+L_DATAREG
);
468 outw(89,PORT
+L_ADDRREG
);
469 v
|= inw(PORT
+L_DATAREG
);
470 printk("Version %#08lx, ",v
);
471 p
->features
= INIT_RING_BEFORE_START
;
474 printk("ancient LANCE, ");
478 if(test_bit(0,&cards
[i
].config
)) {
479 dev
->irq
= irqtab
[(inw(ioaddr
+L_CONFIG
)>>2)&3];
480 dev
->dma
= dmatab
[inw(ioaddr
+L_CONFIG
)&3];
481 printk("IRQ %d (from card), DMA %d (from card).\n",dev
->irq
,dev
->dma
);
485 /* 'stuck test' from lance.c */
486 long dma_channels
= ((inb(DMA1_STAT_REG
) >> 4) & 0x0f) |
487 (inb(DMA2_STAT_REG
) & 0xf0);
490 if(test_bit(dma
,&dma_channels
) || request_dma(dma
,"ni6510"))
493 flags
=claim_dma_lock();
495 set_dma_mode(dma
,DMA_MODE_CASCADE
);
497 release_dma_lock(flags
);
499 ni65_init_lance(p
,dev
->dev_addr
,0,0); /* trigger memory access */
501 flags
=claim_dma_lock();
504 release_dma_lock(flags
);
506 if(readreg(CSR0
) & CSR0_IDON
)
511 printk(KERN_ERR
"%s: Can't detect DMA channel!\n", dev
->name
);
513 release_region(ioaddr
, cards
[p
->cardno
].total_size
);
516 dev
->dma
= dmatab
[i
];
517 printk("DMA %d (autodetected), ",dev
->dma
);
520 printk("DMA %d (assigned), ",dev
->dma
);
524 unsigned long irq_mask
;
526 ni65_init_lance(p
,dev
->dev_addr
,0,0);
527 irq_mask
= probe_irq_on();
528 writereg(CSR0_INIT
|CSR0_INEA
,CSR0
); /* trigger interrupt */
530 dev
->irq
= probe_irq_off(irq_mask
);
533 printk("Failed to detect IRQ line!\n");
535 release_region(ioaddr
, cards
[p
->cardno
].total_size
);
538 printk("IRQ %d (autodetected).\n",dev
->irq
);
541 printk("IRQ %d (assigned).\n",dev
->irq
);
544 if(request_dma(dev
->dma
, cards
[p
->cardno
].cardname
) != 0)
546 printk(KERN_ERR
"%s: Can't request dma-channel %d\n",dev
->name
,(int) dev
->dma
);
548 release_region(ioaddr
, cards
[p
->cardno
].total_size
);
552 dev
->base_addr
= ioaddr
;
553 SET_MODULE_OWNER(dev
);
554 dev
->open
= ni65_open
;
555 dev
->stop
= ni65_close
;
556 dev
->hard_start_xmit
= ni65_send_packet
;
557 dev
->tx_timeout
= ni65_timeout
;
558 dev
->watchdog_timeo
= HZ
/2;
559 dev
->get_stats
= ni65_get_stats
;
560 dev
->set_multicast_list
= set_multicast_list
;
561 return 0; /* everything is OK */
565 * set lance register and trigger init
567 static void ni65_init_lance(struct priv
*p
,unsigned char *daddr
,int filter
,int mode
)
572 writereg(CSR0_CLRALL
|CSR0_STOP
,CSR0
);
575 p
->ib
.eaddr
[i
] = daddr
[i
];
578 p
->ib
.filter
[i
] = filter
;
581 p
->ib
.trp
= (u32
) isa_virt_to_bus(p
->tmdhead
) | TMDNUMMASK
;
582 p
->ib
.rrp
= (u32
) isa_virt_to_bus(p
->rmdhead
) | RMDNUMMASK
;
583 writereg(0,CSR3
); /* busmaster/no word-swap */
584 pib
= (u32
) isa_virt_to_bus(&p
->ib
);
585 writereg(pib
& 0xffff,CSR1
);
586 writereg(pib
>> 16,CSR2
);
588 writereg(CSR0_INIT
,CSR0
); /* this changes L_ADDRREG to CSR0 */
593 if(inw(PORT
+L_DATAREG
) & (CSR0_IDON
| CSR0_MERR
) )
594 break; /* init ok ? */
599 * allocate memory area and check the 16MB border
601 static void *ni65_alloc_mem(struct net_device
*dev
,char *what
,int size
,int type
)
603 struct sk_buff
*skb
=NULL
;
608 ret
= skb
= alloc_skb(2+16+size
,GFP_KERNEL
|GFP_DMA
);
610 printk(KERN_WARNING
"%s: unable to allocate %s memory.\n",dev
->name
,what
);
614 skb_reserve(skb
,2+16);
615 skb_put(skb
,R_BUF_SIZE
); /* grab the whole space .. (not necessary) */
619 ret
= ptr
= kmalloc(T_BUF_SIZE
,GFP_KERNEL
| GFP_DMA
);
621 printk(KERN_WARNING
"%s: unable to allocate %s memory.\n",dev
->name
,what
);
625 if( (u32
) virt_to_phys(ptr
+size
) > 0x1000000) {
626 printk(KERN_WARNING
"%s: unable to allocate %s memory in lower 16MB!\n",dev
->name
,what
);
637 * allocate all memory structures .. send/recv buffers etc ...
639 static int ni65_alloc_buffer(struct net_device
*dev
)
646 * we need 8-aligned memory ..
648 ptr
= ni65_alloc_mem(dev
,"BUFFER",sizeof(struct priv
)+8,0);
652 p
= dev
->priv
= (struct priv
*) (((unsigned long) ptr
+ 7) & ~0x7);
653 memset((char *) dev
->priv
,0,sizeof(struct priv
));
656 for(i
=0;i
<TMDNUM
;i
++)
659 p
->tmd_skb
[i
] = NULL
;
661 p
->tmdbounce
[i
] = ni65_alloc_mem(dev
,"XMIT",T_BUF_SIZE
,0);
662 if(!p
->tmdbounce
[i
]) {
668 for(i
=0;i
<RMDNUM
;i
++)
671 p
->recv_skb
[i
] = ni65_alloc_mem(dev
,"RECV",R_BUF_SIZE
,1);
672 if(!p
->recv_skb
[i
]) {
677 p
->recvbounce
[i
] = ni65_alloc_mem(dev
,"RECV",R_BUF_SIZE
,0);
678 if(!p
->recvbounce
[i
]) {
685 return 0; /* everything is OK */
689 * free buffers and private struct
691 static void ni65_free_buffer(struct priv
*p
)
698 for(i
=0;i
<TMDNUM
;i
++) {
699 kfree(p
->tmdbounce
[i
]);
702 dev_kfree_skb(p
->tmd_skb
[i
]);
706 for(i
=0;i
<RMDNUM
;i
++)
710 dev_kfree_skb(p
->recv_skb
[i
]);
712 kfree(p
->recvbounce
[i
]);
720 * stop and (re)start lance .. e.g after an error
722 static void ni65_stop_start(struct net_device
*dev
,struct priv
*p
)
724 int csr0
= CSR0_INEA
;
726 writedatareg(CSR0_STOP
);
729 printk(KERN_DEBUG
"ni65_stop_start\n");
731 if(p
->features
& INIT_RING_BEFORE_START
) {
734 struct sk_buff
*skb_save
[TMDNUM
];
736 unsigned long buffer
[TMDNUM
];
741 if((p
->tmdhead
[p
->tmdlast
].u
.s
.status
& XMIT_OWN
))
743 p
->tmdlast
= (p
->tmdlast
+ 1) & (TMDNUM
-1);
744 if(p
->tmdlast
== p
->tmdnum
)
749 for(i
=0;i
<TMDNUM
;i
++) {
750 struct tmd
*tmdp
= p
->tmdhead
+ i
;
752 skb_save
[i
] = p
->tmd_skb
[i
];
754 buffer
[i
] = (u32
) isa_bus_to_virt(tmdp
->u
.buffer
);
755 blen
[i
] = tmdp
->blen
;
756 tmdp
->u
.s
.status
= 0x0;
759 for(i
=0;i
<RMDNUM
;i
++) {
760 struct rmd
*rmdp
= p
->rmdhead
+ i
;
761 rmdp
->u
.s
.status
= RCV_OWN
;
763 p
->tmdnum
= p
->xmit_queued
= 0;
764 writedatareg(CSR0_STRT
| csr0
);
766 for(i
=0;i
<TMDNUM
;i
++) {
767 int num
= (i
+ p
->tmdlast
) & (TMDNUM
-1);
768 p
->tmdhead
[i
].u
.buffer
= (u32
) isa_virt_to_bus((char *)buffer
[num
]); /* status is part of buffer field */
769 p
->tmdhead
[i
].blen
= blen
[num
];
770 if(p
->tmdhead
[i
].u
.s
.status
& XMIT_OWN
) {
771 p
->tmdnum
= (p
->tmdnum
+ 1) & (TMDNUM
-1);
773 writedatareg(CSR0_TDMD
| CSR0_INEA
| csr0
);
776 p
->tmd_skb
[i
] = skb_save
[num
];
779 p
->rmdnum
= p
->tmdlast
= 0;
781 if (p
->tmdnum
|| !p
->xmit_queued
)
782 netif_wake_queue(dev
);
783 dev
->trans_start
= jiffies
;
786 writedatareg(CSR0_STRT
| csr0
);
790 * init lance (write init-values .. init-buffers) (open-helper)
792 static int ni65_lance_reinit(struct net_device
*dev
)
795 struct priv
*p
= (struct priv
*) dev
->priv
;
801 flags
=claim_dma_lock();
802 disable_dma(dev
->dma
); /* I've never worked with dma, but we do it like the packetdriver */
803 set_dma_mode(dev
->dma
,DMA_MODE_CASCADE
);
804 enable_dma(dev
->dma
);
805 release_dma_lock(flags
);
807 outw(inw(PORT
+L_RESET
),PORT
+L_RESET
); /* first: reset the card */
808 if( (i
=readreg(CSR0
) ) != 0x4)
810 printk(KERN_ERR
"%s: can't RESET %s card: %04x\n",dev
->name
,
811 cards
[p
->cardno
].cardname
,(int) i
);
812 flags
=claim_dma_lock();
813 disable_dma(dev
->dma
);
814 release_dma_lock(flags
);
818 p
->rmdnum
= p
->tmdnum
= p
->tmdlast
= p
->tmdbouncenum
= 0;
819 for(i
=0;i
<TMDNUM
;i
++)
821 struct tmd
*tmdp
= p
->tmdhead
+ i
;
824 dev_kfree_skb(p
->tmd_skb
[i
]);
825 p
->tmd_skb
[i
] = NULL
;
828 tmdp
->u
.buffer
= 0x0;
829 tmdp
->u
.s
.status
= XMIT_START
| XMIT_END
;
830 tmdp
->blen
= tmdp
->status2
= 0;
833 for(i
=0;i
<RMDNUM
;i
++)
835 struct rmd
*rmdp
= p
->rmdhead
+ i
;
837 rmdp
->u
.buffer
= (u32
) isa_virt_to_bus(p
->recv_skb
[i
]->data
);
839 rmdp
->u
.buffer
= (u32
) isa_virt_to_bus(p
->recvbounce
[i
]);
841 rmdp
->blen
= -(R_BUF_SIZE
-8);
843 rmdp
->u
.s
.status
= RCV_OWN
;
846 if(dev
->flags
& IFF_PROMISC
)
847 ni65_init_lance(p
,dev
->dev_addr
,0x00,M_PROM
);
848 else if(dev
->mc_count
|| dev
->flags
& IFF_ALLMULTI
)
849 ni65_init_lance(p
,dev
->dev_addr
,0xff,0x0);
851 ni65_init_lance(p
,dev
->dev_addr
,0x00,0x00);
854 * ni65_set_lance_mem() sets L_ADDRREG to CSR0
855 * NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED
858 if(inw(PORT
+L_DATAREG
) & CSR0_IDON
) {
859 ni65_set_performance(p
);
860 /* init OK: start lance , enable interrupts */
861 writedatareg(CSR0_CLRALL
| CSR0_INEA
| CSR0_STRT
);
864 printk(KERN_ERR
"%s: can't init lance, status: %04x\n",dev
->name
,(int) inw(PORT
+L_DATAREG
));
865 flags
=claim_dma_lock();
866 disable_dma(dev
->dma
);
867 release_dma_lock(flags
);
868 return 0; /* ->Error */
874 static irqreturn_t
ni65_interrupt(int irq
, void * dev_id
)
877 struct net_device
*dev
= dev_id
;
881 p
= (struct priv
*) dev
->priv
;
883 spin_lock(&p
->ring_lock
);
886 csr0
= inw(PORT
+L_DATAREG
);
889 writedatareg( (csr0
& CSR0_CLRALL
) ); /* ack interrupts, disable int. */
891 writedatareg( (csr0
& CSR0_CLRALL
) | CSR0_INEA
); /* ack interrupts, interrupts enabled */
894 if(!(csr0
& (CSR0_ERR
| CSR0_RINT
| CSR0_TINT
)))
897 if(csr0
& CSR0_RINT
) /* RECV-int? */
898 ni65_recv_intr(dev
,csr0
);
899 if(csr0
& CSR0_TINT
) /* XMIT-int? */
900 ni65_xmit_intr(dev
,csr0
);
904 struct priv
*p
= (struct priv
*) dev
->priv
;
906 printk(KERN_ERR
"%s: general error: %04x.\n",dev
->name
,csr0
);
908 p
->stats
.tx_errors
++;
909 if(csr0
& CSR0_MISS
) {
911 for(i
=0;i
<RMDNUM
;i
++)
912 printk("%02x ",p
->rmdhead
[i
].u
.s
.status
);
914 p
->stats
.rx_errors
++;
916 if(csr0
& CSR0_MERR
) {
918 printk(KERN_ERR
"%s: Ooops .. memory error: %04x.\n",dev
->name
,csr0
);
919 ni65_stop_start(dev
,p
);
924 #ifdef RCV_PARANOIA_CHECK
927 for(j
=0;j
<RMDNUM
;j
++)
929 struct priv
*p
= (struct priv
*) dev
->priv
;
931 for(i
=RMDNUM
-1;i
>0;i
--) {
932 num2
= (p
->rmdnum
+ i
) & (RMDNUM
-1);
933 if(!(p
->rmdhead
[num2
].u
.s
.status
& RCV_OWN
))
938 for(k
=0;k
<RMDNUM
;k
++) {
939 num1
= (p
->rmdnum
+ k
) & (RMDNUM
-1);
940 if(!(p
->rmdhead
[num1
].u
.s
.status
& RCV_OWN
))
951 for(k
=0;k
<RMDNUM
;k
++) {
952 sprintf(buf1
,"%02x ",(p
->rmdhead
[k
].u
.s
.status
)); /* & RCV_OWN) ); */
956 printk(KERN_ERR
"%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev
->name
,p
->rmdnum
,i
,buf
);
960 ni65_recv_intr(dev
,csr0
);
961 if((p
->rmdhead
[num2
].u
.s
.status
& RCV_OWN
))
962 break; /* ok, we are 'in sync' again */
970 if( (csr0
& (CSR0_RXON
| CSR0_TXON
)) != (CSR0_RXON
| CSR0_TXON
) ) {
971 printk(KERN_DEBUG
"%s: RX or TX was offline -> restart\n",dev
->name
);
972 ni65_stop_start(dev
,p
);
975 writedatareg(CSR0_INEA
);
977 spin_unlock(&p
->ring_lock
);
982 * We have received an Xmit-Interrupt ..
983 * send a new packet if necessary
985 static void ni65_xmit_intr(struct net_device
*dev
,int csr0
)
987 struct priv
*p
= (struct priv
*) dev
->priv
;
989 while(p
->xmit_queued
)
991 struct tmd
*tmdp
= p
->tmdhead
+ p
->tmdlast
;
992 int tmdstat
= tmdp
->u
.s
.status
;
994 if(tmdstat
& XMIT_OWN
)
997 if(tmdstat
& XMIT_ERR
)
1000 if(tmdp
->status2
& XMIT_TDRMASK
&& debuglevel
> 3)
1001 printk(KERN_ERR
"%s: tdr-problems (e.g. no resistor)\n",dev
->name
);
1003 /* checking some errors */
1004 if(tmdp
->status2
& XMIT_RTRY
)
1005 p
->stats
.tx_aborted_errors
++;
1006 if(tmdp
->status2
& XMIT_LCAR
)
1007 p
->stats
.tx_carrier_errors
++;
1008 if(tmdp
->status2
& (XMIT_BUFF
| XMIT_UFLO
)) {
1009 /* this stops the xmitter */
1010 p
->stats
.tx_fifo_errors
++;
1012 printk(KERN_ERR
"%s: Xmit FIFO/BUFF error\n",dev
->name
);
1013 if(p
->features
& INIT_RING_BEFORE_START
) {
1014 tmdp
->u
.s
.status
= XMIT_OWN
| XMIT_START
| XMIT_END
; /* test: resend this frame */
1015 ni65_stop_start(dev
,p
);
1016 break; /* no more Xmit processing .. */
1019 ni65_stop_start(dev
,p
);
1022 printk(KERN_ERR
"%s: xmit-error: %04x %02x-%04x\n",dev
->name
,csr0
,(int) tmdstat
,(int) tmdp
->status2
);
1023 if(!(csr0
& CSR0_BABL
)) /* don't count errors twice */
1024 p
->stats
.tx_errors
++;
1028 p
->stats
.tx_bytes
-= (short)(tmdp
->blen
);
1029 p
->stats
.tx_packets
++;
1033 if(p
->tmd_skb
[p
->tmdlast
]) {
1034 dev_kfree_skb_irq(p
->tmd_skb
[p
->tmdlast
]);
1035 p
->tmd_skb
[p
->tmdlast
] = NULL
;
1039 p
->tmdlast
= (p
->tmdlast
+ 1) & (TMDNUM
-1);
1040 if(p
->tmdlast
== p
->tmdnum
)
1043 netif_wake_queue(dev
);
1047 * We have received a packet
1049 static void ni65_recv_intr(struct net_device
*dev
,int csr0
)
1054 struct priv
*p
= (struct priv
*) dev
->priv
;
1056 rmdp
= p
->rmdhead
+ p
->rmdnum
;
1057 while(!( (rmdstat
= rmdp
->u
.s
.status
) & RCV_OWN
))
1060 if( (rmdstat
& (RCV_START
| RCV_END
| RCV_ERR
)) != (RCV_START
| RCV_END
) ) /* error or oversized? */
1062 if(!(rmdstat
& RCV_ERR
)) {
1063 if(rmdstat
& RCV_START
)
1065 p
->stats
.rx_length_errors
++;
1066 printk(KERN_ERR
"%s: recv, packet too long: %d\n",dev
->name
,rmdp
->mlen
& 0x0fff);
1071 printk(KERN_ERR
"%s: receive-error: %04x, lance-status: %04x/%04x\n",
1072 dev
->name
,(int) rmdstat
,csr0
,(int) inw(PORT
+L_DATAREG
) );
1073 if(rmdstat
& RCV_FRAM
)
1074 p
->stats
.rx_frame_errors
++;
1075 if(rmdstat
& RCV_OFLO
)
1076 p
->stats
.rx_over_errors
++;
1077 if(rmdstat
& RCV_CRC
)
1078 p
->stats
.rx_crc_errors
++;
1079 if(rmdstat
& RCV_BUF_ERR
)
1080 p
->stats
.rx_fifo_errors
++;
1082 if(!(csr0
& CSR0_MISS
)) /* don't count errors twice */
1083 p
->stats
.rx_errors
++;
1085 else if( (len
= (rmdp
->mlen
& 0x0fff) - 4) >= 60)
1088 struct sk_buff
*skb
= alloc_skb(R_BUF_SIZE
+2+16,GFP_ATOMIC
);
1090 skb_reserve(skb
,16);
1092 struct sk_buff
*skb
= dev_alloc_skb(len
+2);
1099 if( (unsigned long) (skb
->data
+ R_BUF_SIZE
) > 0x1000000) {
1101 eth_copy_and_sum(skb
, (unsigned char *)(p
->recv_skb
[p
->rmdnum
]->data
),len
,0);
1104 struct sk_buff
*skb1
= p
->recv_skb
[p
->rmdnum
];
1105 skb_put(skb
,R_BUF_SIZE
);
1106 p
->recv_skb
[p
->rmdnum
] = skb
;
1107 rmdp
->u
.buffer
= (u32
) isa_virt_to_bus(skb
->data
);
1113 eth_copy_and_sum(skb
, (unsigned char *) p
->recvbounce
[p
->rmdnum
],len
,0);
1115 p
->stats
.rx_packets
++;
1116 p
->stats
.rx_bytes
+= len
;
1117 skb
->protocol
=eth_type_trans(skb
,dev
);
1119 dev
->last_rx
= jiffies
;
1123 printk(KERN_ERR
"%s: can't alloc new sk_buff\n",dev
->name
);
1124 p
->stats
.rx_dropped
++;
1128 printk(KERN_INFO
"%s: received runt packet\n",dev
->name
);
1129 p
->stats
.rx_errors
++;
1131 rmdp
->blen
= -(R_BUF_SIZE
-8);
1133 rmdp
->u
.s
.status
= RCV_OWN
; /* change owner */
1134 p
->rmdnum
= (p
->rmdnum
+ 1) & (RMDNUM
-1);
1135 rmdp
= p
->rmdhead
+ p
->rmdnum
;
1143 static void ni65_timeout(struct net_device
*dev
)
1146 struct priv
*p
= (struct priv
*) dev
->priv
;
1148 printk(KERN_ERR
"%s: xmitter timed out, try to restart!\n",dev
->name
);
1149 for(i
=0;i
<TMDNUM
;i
++)
1150 printk("%02x ",p
->tmdhead
[i
].u
.s
.status
);
1152 ni65_lance_reinit(dev
);
1153 dev
->trans_start
= jiffies
;
1154 netif_wake_queue(dev
);
1161 static int ni65_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1163 struct priv
*p
= (struct priv
*) dev
->priv
;
1165 netif_stop_queue(dev
);
1167 if (test_and_set_bit(0, (void*)&p
->lock
)) {
1168 printk(KERN_ERR
"%s: Queue was locked.\n", dev
->name
);
1173 short len
= ETH_ZLEN
< skb
->len
? skb
->len
: ETH_ZLEN
;
1175 unsigned long flags
;
1178 if( (unsigned long) (skb
->data
+ skb
->len
) > 0x1000000) {
1181 memcpy((char *) p
->tmdbounce
[p
->tmdbouncenum
] ,(char *)skb
->data
,
1182 (skb
->len
> T_BUF_SIZE
) ? T_BUF_SIZE
: skb
->len
);
1184 memset((char *)p
->tmdbounce
[p
->tmdbouncenum
]+skb
->len
, 0, len
-skb
->len
);
1185 dev_kfree_skb (skb
);
1187 spin_lock_irqsave(&p
->ring_lock
, flags
);
1188 tmdp
= p
->tmdhead
+ p
->tmdnum
;
1189 tmdp
->u
.buffer
= (u32
) isa_virt_to_bus(p
->tmdbounce
[p
->tmdbouncenum
]);
1190 p
->tmdbouncenum
= (p
->tmdbouncenum
+ 1) & (TMDNUM
- 1);
1195 spin_lock_irqsave(&p
->ring_lock
, flags
);
1197 tmdp
= p
->tmdhead
+ p
->tmdnum
;
1198 tmdp
->u
.buffer
= (u32
) isa_virt_to_bus(skb
->data
);
1199 p
->tmd_skb
[p
->tmdnum
] = skb
;
1204 tmdp
->u
.s
.status
= XMIT_OWN
| XMIT_START
| XMIT_END
;
1205 writedatareg(CSR0_TDMD
| CSR0_INEA
); /* enable xmit & interrupt */
1208 p
->tmdnum
= (p
->tmdnum
+ 1) & (TMDNUM
-1);
1210 if(p
->tmdnum
!= p
->tmdlast
)
1211 netif_wake_queue(dev
);
1214 dev
->trans_start
= jiffies
;
1216 spin_unlock_irqrestore(&p
->ring_lock
, flags
);
1222 static struct net_device_stats
*ni65_get_stats(struct net_device
*dev
)
1227 struct priv
*p
= (struct priv
*) dev
->priv
;
1228 for(i
=0;i
<RMDNUM
;i
++)
1230 struct rmd
*rmdp
= p
->rmdhead
+ ((p
->rmdnum
+ i
) & (RMDNUM
-1));
1231 printk("%02x ",rmdp
->u
.s
.status
);
1236 return &((struct priv
*) dev
->priv
)->stats
;
1239 static void set_multicast_list(struct net_device
*dev
)
1241 if(!ni65_lance_reinit(dev
))
1242 printk(KERN_ERR
"%s: Can't switch card into MC mode!\n",dev
->name
);
1243 netif_wake_queue(dev
);
1247 static struct net_device
*dev_ni65
;
1249 module_param(irq
, int, 0);
1250 module_param(io
, int, 0);
1251 module_param(dma
, int, 0);
1252 MODULE_PARM_DESC(irq
, "ni6510 IRQ number (ignored for some cards)");
1253 MODULE_PARM_DESC(io
, "ni6510 I/O base address");
1254 MODULE_PARM_DESC(dma
, "ni6510 ISA DMA channel (ignored for some cards)");
1256 int __init
init_module(void)
1258 dev_ni65
= ni65_probe(-1);
1259 return IS_ERR(dev_ni65
) ? PTR_ERR(dev_ni65
) : 0;
1262 void __exit
cleanup_module(void)
1264 unregister_netdev(dev_ni65
);
1265 cleanup_card(dev_ni65
);
1266 free_netdev(dev_ni65
);
1270 MODULE_LICENSE("GPL");