1 /*
2  * Sun3 i82586 Ethernet driver
3  *
4  * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
5  *
6  * Original copyright follows:
7  * --------------------------
8  *
9  * net-3-driver for the NI5210 card (i82586 Ethernet chip)
10  *
11  * This is an extension to the Linux operating system, and is covered by the
12  * same Gnu Public License that covers that work.
13  *
14  * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
15  * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
16  * --------------------------
17  *
18  * Consult ni52.c for further notes from the original driver.
19  *
20  * This incarnation currently supports the OBIO version of the i82586 chip
21  * used in certain sun3 models.  It should be fairly doable to expand this
22  * to support VME if I should every acquire such a board.
23  *
24  */
25 
26 static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */
27 static int automatic_resume = 0; /* experimental .. better should be zero */
28 static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */
29 static int fifo=0x8;	/* don't change */
30 
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/string.h>
34 #include <linux/errno.h>
35 #include <linux/ioport.h>
36 #include <linux/interrupt.h>
37 #include <linux/delay.h>
38 #include <linux/init.h>
39 #include <linux/bitops.h>
40 #include <asm/io.h>
41 #include <asm/idprom.h>
42 #include <asm/machines.h>
43 #include <asm/sun3mmu.h>
44 #include <asm/dvma.h>
45 #include <asm/byteorder.h>
46 
47 #include <linux/netdevice.h>
48 #include <linux/etherdevice.h>
49 #include <linux/skbuff.h>
50 
51 #include "sun3_82586.h"
52 
53 #define DRV_NAME "sun3_82586"
54 
55 #define DEBUG       /* debug on */
56 #define SYSBUSVAL 0 /* 16 Bit */
57 #define SUN3_82586_TOTAL_SIZE	PAGE_SIZE
58 
59 #define sun3_attn586()  {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
60 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
61 #define sun3_disint()   {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
62 #define sun3_enaint()   {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
63 #define sun3_active()   {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
64 
65 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
66 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
67 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
68 
69 /******************* how to calculate the buffers *****************************
70 
71   * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
72   * --------------- in a different (more stable?) mode. Only in this mode it's
73   *                 possible to configure the driver with 'NO_NOPCOMMANDS'
74 
75 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
76 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
77 sizeof(rfd) = 24; sizeof(rbd) = 12;
78 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
79 sizeof(nop_cmd) = 8;
80 
81   * if you don't know the driver, better do not change these values: */
82 
83 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
84 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
85 #define NUM_XMIT_BUFFS 1    /* config for 32K shmem */
86 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
87 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
88 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
89 #define NO_NOPCOMMANDS      /* only possible with NUM_XMIT_BUFFS=1 */
90 
91 /**************************************************************************/
92 
93 /* different DELAYs */
94 #define DELAY(x) mdelay(32 * x);
95 #define DELAY_16(); { udelay(16); }
96 #define DELAY_18(); { udelay(4); }
97 
98 /* wait for command with timeout: */
99 #define WAIT_4_SCB_CMD() \
100 { int i; \
101   for(i=0;i<16384;i++) { \
102     if(!p->scb->cmd_cuc) break; \
103     DELAY_18(); \
104     if(i == 16383) { \
105       printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
106        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
107 
108 #define WAIT_4_SCB_CMD_RUC() { int i; \
109   for(i=0;i<16384;i++) { \
110     if(!p->scb->cmd_ruc) break; \
111     DELAY_18(); \
112     if(i == 16383) { \
113       printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
114        if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
115 
116 #define WAIT_4_STAT_COMPL(addr) { int i; \
117    for(i=0;i<32767;i++) { \
118      if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
119      DELAY_16(); DELAY_16(); } }
120 
121 static int     sun3_82586_probe1(struct net_device *dev,int ioaddr);
122 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
123 static int     sun3_82586_open(struct net_device *dev);
124 static int     sun3_82586_close(struct net_device *dev);
125 static netdev_tx_t     sun3_82586_send_packet(struct sk_buff *,
126 					      struct net_device *);
127 static struct  net_device_stats *sun3_82586_get_stats(struct net_device *dev);
128 static void    set_multicast_list(struct net_device *dev);
129 static void    sun3_82586_timeout(struct net_device *dev, unsigned int txqueue);
130 #if 0
131 static void    sun3_82586_dump(struct net_device *,void *);
132 #endif
133 
134 /* helper-functions */
135 static int     init586(struct net_device *dev);
136 static int     check586(struct net_device *dev,char *where,unsigned size);
137 static void    alloc586(struct net_device *dev);
138 static void    startrecv586(struct net_device *dev);
139 static void   *alloc_rfa(struct net_device *dev,void *ptr);
140 static void    sun3_82586_rcv_int(struct net_device *dev);
141 static void    sun3_82586_xmt_int(struct net_device *dev);
142 static void    sun3_82586_rnr_int(struct net_device *dev);
143 
144 struct priv
145 {
146 	unsigned long base;
147 	char *memtop;
148 	long int lock;
149 	int reseted;
150 	volatile struct rfd_struct	*rfd_last,*rfd_top,*rfd_first;
151 	volatile struct scp_struct	*scp;	/* volatile is important */
152 	volatile struct iscp_struct	*iscp;	/* volatile is important */
153 	volatile struct scb_struct	*scb;	/* volatile is important */
154 	volatile struct tbd_struct	*xmit_buffs[NUM_XMIT_BUFFS];
155 	volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
156 #if (NUM_XMIT_BUFFS == 1)
157 	volatile struct nop_cmd_struct *nop_cmds[2];
158 #else
159 	volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
160 #endif
161 	volatile int		nop_point,num_recv_buffs;
162 	volatile char		*xmit_cbuffs[NUM_XMIT_BUFFS];
163 	volatile int		xmit_count,xmit_last;
164 };
165 
166 /**********************************************
167  * close device
168  */
sun3_82586_close(struct net_device * dev)169 static int sun3_82586_close(struct net_device *dev)
170 {
171 	free_irq(dev->irq, dev);
172 
173 	sun3_reset586(); /* the hard way to stop the receiver */
174 
175 	netif_stop_queue(dev);
176 
177 	return 0;
178 }
179 
180 /**********************************************
181  * open device
182  */
sun3_82586_open(struct net_device * dev)183 static int sun3_82586_open(struct net_device *dev)
184 {
185 	int ret;
186 
187 	sun3_disint();
188 	alloc586(dev);
189 	init586(dev);
190 	startrecv586(dev);
191 	sun3_enaint();
192 
193 	ret = request_irq(dev->irq, sun3_82586_interrupt,0,dev->name,dev);
194 	if (ret)
195 	{
196 		sun3_reset586();
197 		return ret;
198 	}
199 
200 	netif_start_queue(dev);
201 
202 	return 0; /* most done by init */
203 }
204 
205 /**********************************************
206  * Check to see if there's an 82586 out there.
207  */
check586(struct net_device * dev,char * where,unsigned size)208 static int check586(struct net_device *dev,char *where,unsigned size)
209 {
210 	struct priv pb;
211 	struct priv *p = &pb;
212 	char *iscp_addr;
213 	int i;
214 
215 	p->base = (unsigned long) dvma_btov(0);
216 	p->memtop = (char *)dvma_btov((unsigned long)where);
217 	p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
218 	memset((char *)p->scp,0, sizeof(struct scp_struct));
219 	for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
220 		if(((char *)p->scp)[i])
221 			return 0;
222 	p->scp->sysbus = SYSBUSVAL;				/* 1 = 8Bit-Bus, 0 = 16 Bit */
223 	if(p->scp->sysbus != SYSBUSVAL)
224 		return 0;
225 
226 	iscp_addr = (char *)dvma_btov((unsigned long)where);
227 
228 	p->iscp = (struct iscp_struct *) iscp_addr;
229 	memset((char *)p->iscp,0, sizeof(struct iscp_struct));
230 
231 	p->scp->iscp = make24(p->iscp);
232 	p->iscp->busy = 1;
233 
234 	sun3_reset586();
235 	sun3_attn586();
236 	DELAY(1);	/* wait a while... */
237 
238 	if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
239 		return 0;
240 
241 	return 1;
242 }
243 
244 /******************************************************************
245  * set iscp at the right place, called by sun3_82586_probe1 and open586.
246  */
alloc586(struct net_device * dev)247 static void alloc586(struct net_device *dev)
248 {
249 	struct priv *p = netdev_priv(dev);
250 
251 	sun3_reset586();
252 	DELAY(1);
253 
254 	p->scp	= (struct scp_struct *)	(p->base + SCP_DEFAULT_ADDRESS);
255 	p->iscp	= (struct iscp_struct *) dvma_btov(dev->mem_start);
256 	p->scb  = (struct scb_struct *)  ((char *)p->iscp + sizeof(struct iscp_struct));
257 
258 	memset((char *) p->iscp,0,sizeof(struct iscp_struct));
259 	memset((char *) p->scp ,0,sizeof(struct scp_struct));
260 
261 	p->scp->iscp = make24(p->iscp);
262 	p->scp->sysbus = SYSBUSVAL;
263 	p->iscp->scb_offset = make16(p->scb);
264 	p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
265 
266 	p->iscp->busy = 1;
267 	sun3_reset586();
268 	sun3_attn586();
269 
270 	DELAY(1);
271 
272 	if(p->iscp->busy)
273 		printk("%s: Init-Problems (alloc).\n",dev->name);
274 
275 	p->reseted = 0;
276 
277 	memset((char *)p->scb,0,sizeof(struct scb_struct));
278 }
279 
sun3_82586_probe(void)280 static int __init sun3_82586_probe(void)
281 {
282 	struct net_device *dev;
283 	unsigned long ioaddr;
284 	static int found = 0;
285 	int err = -ENOMEM;
286 
287 	/* check that this machine has an onboard 82586 */
288 	switch(idprom->id_machtype) {
289 	case SM_SUN3|SM_3_160:
290 	case SM_SUN3|SM_3_260:
291 		/* these machines have 82586 */
292 		break;
293 
294 	default:
295 		return -ENODEV;
296 	}
297 
298 	if (found)
299 		return -ENODEV;
300 
301 	ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
302 	if (!ioaddr)
303 		return -ENOMEM;
304 	found = 1;
305 
306 	dev = alloc_etherdev(sizeof(struct priv));
307 	if (!dev)
308 		goto out;
309 	dev->irq = IE_IRQ;
310 	dev->base_addr = ioaddr;
311 	err = sun3_82586_probe1(dev, ioaddr);
312 	if (err)
313 		goto out1;
314 	err = register_netdev(dev);
315 	if (err)
316 		goto out2;
317 	return 0;
318 
319 out2:
320 	release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
321 out1:
322 	free_netdev(dev);
323 out:
324 	iounmap((void __iomem *)ioaddr);
325 	return err;
326 }
327 module_init(sun3_82586_probe);
328 
329 static const struct net_device_ops sun3_82586_netdev_ops = {
330 	.ndo_open		= sun3_82586_open,
331 	.ndo_stop		= sun3_82586_close,
332 	.ndo_start_xmit		= sun3_82586_send_packet,
333 	.ndo_set_rx_mode	= set_multicast_list,
334 	.ndo_tx_timeout		= sun3_82586_timeout,
335 	.ndo_get_stats		= sun3_82586_get_stats,
336 	.ndo_validate_addr	= eth_validate_addr,
337 	.ndo_set_mac_address	= eth_mac_addr,
338 };
339 
sun3_82586_probe1(struct net_device * dev,int ioaddr)340 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
341 {
342 	int size, retval;
343 
344 	if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
345 		return -EBUSY;
346 
347 	/* copy in the ethernet address from the prom */
348 	eth_hw_addr_set(dev, idprom->id_ethaddr);
349 
350 	printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
351 
352 	/*
353 	 * check (or search) IO-Memory, 32K
354 	 */
355 	size = 0x8000;
356 
357 	dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
358 	dev->mem_end = dev->mem_start + size;
359 
360 	if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
361 		printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
362 		retval = -ENODEV;
363 		goto out;
364 	}
365 	if(!check586(dev,(char *) dev->mem_start,size)) {
366 		printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
367 		retval = -ENODEV;
368 		goto out;
369 	}
370 
371 	((struct priv *)netdev_priv(dev))->memtop =
372 					(char *)dvma_btov(dev->mem_start);
373 	((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0);
374 	alloc586(dev);
375 
376 	/* set number of receive-buffs according to memsize */
377 	if(size == 0x2000)
378 		((struct priv *)netdev_priv(dev))->num_recv_buffs =
379 							NUM_RECV_BUFFS_8;
380 	else if(size == 0x4000)
381 		((struct priv *)netdev_priv(dev))->num_recv_buffs =
382 							NUM_RECV_BUFFS_16;
383 	else
384 		((struct priv *)netdev_priv(dev))->num_recv_buffs =
385 							NUM_RECV_BUFFS_32;
386 
387 	printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
388 
389 	dev->netdev_ops		= &sun3_82586_netdev_ops;
390 	dev->watchdog_timeo	= HZ/20;
391 
392 	dev->if_port 		= 0;
393 	return 0;
394 out:
395 	release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
396 	return retval;
397 }
398 
399 
init586(struct net_device * dev)400 static int init586(struct net_device *dev)
401 {
402 	void *ptr;
403 	int i,result=0;
404 	struct priv *p = netdev_priv(dev);
405 	volatile struct configure_cmd_struct	*cfg_cmd;
406 	volatile struct iasetup_cmd_struct *ias_cmd;
407 	volatile struct tdr_cmd_struct *tdr_cmd;
408 	volatile struct mcsetup_cmd_struct *mc_cmd;
409 	struct netdev_hw_addr *ha;
410 	int num_addrs=netdev_mc_count(dev);
411 
412 	ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
413 
414 	cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
415 	cfg_cmd->cmd_status	= 0;
416 	cfg_cmd->cmd_cmd	= swab16(CMD_CONFIGURE | CMD_LAST);
417 	cfg_cmd->cmd_link	= 0xffff;
418 
419 	cfg_cmd->byte_cnt	= 0x0a; /* number of cfg bytes */
420 	cfg_cmd->fifo		= fifo; /* fifo-limit (8=tx:32/rx:64) */
421 	cfg_cmd->sav_bf		= 0x40; /* hold or discard bad recv frames (bit 7) */
422 	cfg_cmd->adr_len	= 0x2e; /* addr_len |!src_insert |pre-len |loopback */
423 	cfg_cmd->priority	= 0x00;
424 	cfg_cmd->ifs		= 0x60;
425 	cfg_cmd->time_low	= 0x00;
426 	cfg_cmd->time_high	= 0xf2;
427 	cfg_cmd->promisc	= 0;
428 	if(dev->flags & IFF_ALLMULTI) {
429 		int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
430 		if(num_addrs > len)	{
431 			printk("%s: switching to promisc. mode\n",dev->name);
432 			cfg_cmd->promisc = 1;
433 		}
434 	}
435 	if(dev->flags&IFF_PROMISC)
436 		cfg_cmd->promisc = 1;
437 	cfg_cmd->carr_coll	= 0x00;
438 
439 	p->scb->cbl_offset	= make16(cfg_cmd);
440 	p->scb->cmd_ruc		= 0;
441 
442 	p->scb->cmd_cuc		= CUC_START; /* cmd.-unit start */
443 	sun3_attn586();
444 
445 	WAIT_4_STAT_COMPL(cfg_cmd);
446 
447 	if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
448 	{
449 		printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
450 		return 1;
451 	}
452 
453 	/*
454 	 * individual address setup
455 	 */
456 
457 	ias_cmd = (struct iasetup_cmd_struct *)ptr;
458 
459 	ias_cmd->cmd_status	= 0;
460 	ias_cmd->cmd_cmd	= swab16(CMD_IASETUP | CMD_LAST);
461 	ias_cmd->cmd_link	= 0xffff;
462 
463 	memcpy((char *)&ias_cmd->iaddr,(const char *) dev->dev_addr,ETH_ALEN);
464 
465 	p->scb->cbl_offset = make16(ias_cmd);
466 
467 	p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
468 	sun3_attn586();
469 
470 	WAIT_4_STAT_COMPL(ias_cmd);
471 
472 	if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
473 		printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
474 		return 1;
475 	}
476 
477 	/*
478 	 * TDR, wire check .. e.g. no resistor e.t.c
479 	 */
480 
481 	tdr_cmd = (struct tdr_cmd_struct *)ptr;
482 
483 	tdr_cmd->cmd_status	= 0;
484 	tdr_cmd->cmd_cmd	= swab16(CMD_TDR | CMD_LAST);
485 	tdr_cmd->cmd_link	= 0xffff;
486 	tdr_cmd->status		= 0;
487 
488 	p->scb->cbl_offset = make16(tdr_cmd);
489 	p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
490 	sun3_attn586();
491 
492 	WAIT_4_STAT_COMPL(tdr_cmd);
493 
494 	if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
495 	{
496 		printk("%s: Problems while running the TDR.\n",dev->name);
497 	}
498 	else
499 	{
500 		DELAY_16(); /* wait for result */
501 		result = swab16(tdr_cmd->status);
502 
503 		p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
504 		sun3_attn586(); /* ack the interrupts */
505 
506 		if(result & TDR_LNK_OK)
507 			;
508 		else if(result & TDR_XCVR_PRB)
509 			printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
510 		else if(result & TDR_ET_OPN)
511 			printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
512 		else if(result & TDR_ET_SRT)
513 		{
514 			if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
515 				printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
516 		}
517 		else
518 			printk("%s: TDR: Unknown status %04x\n",dev->name,result);
519 	}
520 
521 	/*
522 	 * Multicast setup
523 	 */
524 	if(num_addrs && !(dev->flags & IFF_PROMISC) )
525 	{
526 		mc_cmd = (struct mcsetup_cmd_struct *) ptr;
527 		mc_cmd->cmd_status = 0;
528 		mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
529 		mc_cmd->cmd_link = 0xffff;
530 		mc_cmd->mc_cnt = swab16(num_addrs * 6);
531 
532 		i = 0;
533 		netdev_for_each_mc_addr(ha, dev)
534 			memcpy((char *) mc_cmd->mc_list[i++],
535 			       ha->addr, ETH_ALEN);
536 
537 		p->scb->cbl_offset = make16(mc_cmd);
538 		p->scb->cmd_cuc = CUC_START;
539 		sun3_attn586();
540 
541 		WAIT_4_STAT_COMPL(mc_cmd);
542 
543 		if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
544 			printk("%s: Can't apply multicast-address-list.\n",dev->name);
545 	}
546 
547 	/*
548 	 * alloc nop/xmit-cmds
549 	 */
550 #if (NUM_XMIT_BUFFS == 1)
551 	for(i=0;i<2;i++)
552 	{
553 		p->nop_cmds[i] 			= (struct nop_cmd_struct *)ptr;
554 		p->nop_cmds[i]->cmd_cmd		= swab16(CMD_NOP);
555 		p->nop_cmds[i]->cmd_status 	= 0;
556 		p->nop_cmds[i]->cmd_link	= make16((p->nop_cmds[i]));
557 		ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
558 	}
559 #else
560 	for(i=0;i<NUM_XMIT_BUFFS;i++)
561 	{
562 		p->nop_cmds[i]			= (struct nop_cmd_struct *)ptr;
563 		p->nop_cmds[i]->cmd_cmd		= swab16(CMD_NOP);
564 		p->nop_cmds[i]->cmd_status	= 0;
565 		p->nop_cmds[i]->cmd_link	= make16((p->nop_cmds[i]));
566 		ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
567 	}
568 #endif
569 
570 	ptr = alloc_rfa(dev,ptr); /* init receive-frame-area */
571 
572 	/*
573 	 * alloc xmit-buffs / init xmit_cmds
574 	 */
575 	for(i=0;i<NUM_XMIT_BUFFS;i++)
576 	{
577 		p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
578 		ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
579 		p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
580 		ptr = (char *) ptr + XMIT_BUFF_SIZE;
581 		p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
582 		ptr = (char *) ptr + sizeof(struct tbd_struct);
583 		if(ptr > (void *)dev->mem_end)
584 		{
585 			printk("%s: not enough shared-mem for your configuration!\n",dev->name);
586 			return 1;
587 		}
588 		memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
589 		memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
590 		p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
591 		p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
592 		p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
593 		p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
594 		p->xmit_buffs[i]->next = 0xffff;
595 		p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
596 	}
597 
598 	p->xmit_count = 0;
599 	p->xmit_last	= 0;
600 #ifndef NO_NOPCOMMANDS
601 	p->nop_point	= 0;
602 #endif
603 
604 	 /*
605 		* 'start transmitter'
606 		*/
607 #ifndef NO_NOPCOMMANDS
608 	p->scb->cbl_offset = make16(p->nop_cmds[0]);
609 	p->scb->cmd_cuc = CUC_START;
610 	sun3_attn586();
611 	WAIT_4_SCB_CMD();
612 #else
613 	p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
614 	p->xmit_cmds[0]->cmd_cmd	= swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
615 #endif
616 
617 	/*
618 	 * ack. interrupts
619 	 */
620 	p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
621 	sun3_attn586();
622 	DELAY_16();
623 
624 	sun3_enaint();
625 	sun3_active();
626 
627 	return 0;
628 }
629 
630 /******************************************************
631  * This is a helper routine for sun3_82586_rnr_int() and init586().
632  * It sets up the Receive Frame Area (RFA).
633  */
634 
alloc_rfa(struct net_device * dev,void * ptr)635 static void *alloc_rfa(struct net_device *dev,void *ptr)
636 {
637 	volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
638 	volatile struct rbd_struct *rbd;
639 	int i;
640 	struct priv *p = netdev_priv(dev);
641 
642 	memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
643 	p->rfd_first = rfd;
644 
645 	for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
646 		rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
647 		rfd[i].rbd_offset = 0xffff;
648 	}
649 	rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP;	 /* RU suspend */
650 
651 	ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
652 
653 	rbd = (struct rbd_struct *) ptr;
654 	ptr = (void *) (rbd + p->num_recv_buffs);
655 
656 	 /* clr descriptors */
657 	memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
658 
659 	for(i=0;i<p->num_recv_buffs;i++)
660 	{
661 		rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
662 		rbd[i].size = swab16(RECV_BUFF_SIZE);
663 		rbd[i].buffer = make24(ptr);
664 		ptr = (char *) ptr + RECV_BUFF_SIZE;
665 	}
666 
667 	p->rfd_top	= p->rfd_first;
668 	p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
669 
670 	p->scb->rfa_offset		= make16(p->rfd_first);
671 	p->rfd_first->rbd_offset	= make16(rbd);
672 
673 	return ptr;
674 }
675 
676 
677 /**************************************************
678  * Interrupt Handler ...
679  */
680 
sun3_82586_interrupt(int irq,void * dev_id)681 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
682 {
683 	struct net_device *dev = dev_id;
684 	unsigned short stat;
685 	int cnt=0;
686 	struct priv *p;
687 
688 	if (!dev) {
689 		printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
690 		return IRQ_NONE;
691 	}
692 	p = netdev_priv(dev);
693 
694 	if(debuglevel > 1)
695 		printk("I");
696 
697 	WAIT_4_SCB_CMD(); /* wait for last command	*/
698 
699 	while((stat=p->scb->cus & STAT_MASK))
700 	{
701 		p->scb->cmd_cuc = stat;
702 		sun3_attn586();
703 
704 		if(stat & STAT_FR)	 /* received a frame */
705 			sun3_82586_rcv_int(dev);
706 
707 		if(stat & STAT_RNR) /* RU went 'not ready' */
708 		{
709 			printk("(R)");
710 			if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
711 			{
712 				WAIT_4_SCB_CMD();
713 				p->scb->cmd_ruc = RUC_RESUME;
714 				sun3_attn586();
715 				WAIT_4_SCB_CMD_RUC();
716 			}
717 			else
718 			{
719 				printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
720 				sun3_82586_rnr_int(dev);
721 			}
722 		}
723 
724 		if(stat & STAT_CX)		/* command with I-bit set complete */
725 			 sun3_82586_xmt_int(dev);
726 
727 #ifndef NO_NOPCOMMANDS
728 		if(stat & STAT_CNA)	/* CU went 'not ready' */
729 		{
730 			if(netif_running(dev))
731 				printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
732 		}
733 #endif
734 
735 		if(debuglevel > 1)
736 			printk("%d",cnt++);
737 
738 		WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
739 		if(p->scb->cmd_cuc)	 /* timed out? */
740 		{
741 			printk("%s: Acknowledge timed out.\n",dev->name);
742 			sun3_disint();
743 			break;
744 		}
745 	}
746 
747 	if(debuglevel > 1)
748 		printk("i");
749 	return IRQ_HANDLED;
750 }
751 
752 /*******************************************************
753  * receive-interrupt
754  */
755 
sun3_82586_rcv_int(struct net_device * dev)756 static void sun3_82586_rcv_int(struct net_device *dev)
757 {
758 	int status,cnt=0;
759 	unsigned short totlen;
760 	struct sk_buff *skb;
761 	struct rbd_struct *rbd;
762 	struct priv *p = netdev_priv(dev);
763 
764 	if(debuglevel > 0)
765 		printk("R");
766 
767 	for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
768 	{
769 			rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
770 
771 			if(status & RFD_OK) /* frame received without error? */
772 			{
773 				if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
774 				{
775 					totlen &= RBD_MASK; /* length of this frame */
776 					rbd->status = 0;
777 					skb = netdev_alloc_skb(dev, totlen + 2);
778 					if(skb != NULL)
779 					{
780 						skb_reserve(skb,2);
781 						skb_put(skb,totlen);
782 						skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
783 						skb->protocol=eth_type_trans(skb,dev);
784 						netif_rx(skb);
785 						dev->stats.rx_packets++;
786 					}
787 					else
788 						dev->stats.rx_dropped++;
789 				}
790 				else
791 				{
792 					int rstat;
793 						 /* free all RBD's until RBD_LAST is set */
794 					totlen = 0;
795 					while(!((rstat=swab16(rbd->status)) & RBD_LAST))
796 					{
797 						totlen += rstat & RBD_MASK;
798 						if(!rstat)
799 						{
800 							printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
801 							break;
802 						}
803 						rbd->status = 0;
804 						rbd = (struct rbd_struct *) make32(rbd->next);
805 					}
806 					totlen += rstat & RBD_MASK;
807 					rbd->status = 0;
808 					printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
809 					dev->stats.rx_dropped++;
810 			 }
811 		}
812 		else /* frame !(ok), only with 'save-bad-frames' */
813 		{
814 			printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
815 			dev->stats.rx_errors++;
816 		}
817 		p->rfd_top->stat_high = 0;
818 		p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
819 		p->rfd_top->rbd_offset = 0xffff;
820 		p->rfd_last->last = 0;				/* delete RFD_SUSP	*/
821 		p->rfd_last = p->rfd_top;
822 		p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
823 		p->scb->rfa_offset = make16(p->rfd_top);
824 
825 		if(debuglevel > 0)
826 			printk("%d",cnt++);
827 	}
828 
829 	if(automatic_resume)
830 	{
831 		WAIT_4_SCB_CMD();
832 		p->scb->cmd_ruc = RUC_RESUME;
833 		sun3_attn586();
834 		WAIT_4_SCB_CMD_RUC();
835 	}
836 
837 #ifdef WAIT_4_BUSY
838 	{
839 		int i;
840 		for(i=0;i<1024;i++)
841 		{
842 			if(p->rfd_top->status)
843 				break;
844 			DELAY_16();
845 			if(i == 1023)
846 				printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
847 		}
848 	}
849 #endif
850 
851 #if 0
852 	if(!at_least_one)
853 	{
854 		int i;
855 		volatile struct rfd_struct *rfds=p->rfd_top;
856 		volatile struct rbd_struct *rbds;
857 		printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
858 		for(i=0;i< (p->num_recv_buffs+4);i++)
859 		{
860 			rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
861 			printk("%04x:%04x ",rfds->status,rbds->status);
862 			rfds = (struct rfd_struct *) make32(rfds->next);
863 		}
864 		printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
865 		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);
866 	}
867 	old_at_least = at_least_one;
868 #endif
869 
870 	if(debuglevel > 0)
871 		printk("r");
872 }
873 
874 /**********************************************************
875  * handle 'Receiver went not ready'.
876  */
877 
sun3_82586_rnr_int(struct net_device * dev)878 static void sun3_82586_rnr_int(struct net_device *dev)
879 {
880 	struct priv *p = netdev_priv(dev);
881 
882 	dev->stats.rx_errors++;
883 
884 	WAIT_4_SCB_CMD();		/* wait for the last cmd, WAIT_4_FULLSTAT?? */
885 	p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
886 	sun3_attn586();
887 	WAIT_4_SCB_CMD_RUC();		/* wait for accept cmd. */
888 
889 	alloc_rfa(dev,(char *)p->rfd_first);
890 /* maybe add a check here, before restarting the RU */
891 	startrecv586(dev); /* restart RU */
892 
893 	printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
894 
895 }
896 
897 /**********************************************************
898  * handle xmit - interrupt
899  */
900 
sun3_82586_xmt_int(struct net_device * dev)901 static void sun3_82586_xmt_int(struct net_device *dev)
902 {
903 	int status;
904 	struct priv *p = netdev_priv(dev);
905 
906 	if(debuglevel > 0)
907 		printk("X");
908 
909 	status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
910 	if(!(status & STAT_COMPL))
911 		printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
912 
913 	if(status & STAT_OK)
914 	{
915 		dev->stats.tx_packets++;
916 		dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
917 	}
918 	else
919 	{
920 		dev->stats.tx_errors++;
921 		if(status & TCMD_LATECOLL) {
922 			printk("%s: late collision detected.\n",dev->name);
923 			dev->stats.collisions++;
924 		}
925 		else if(status & TCMD_NOCARRIER) {
926 			dev->stats.tx_carrier_errors++;
927 			printk("%s: no carrier detected.\n",dev->name);
928 		}
929 		else if(status & TCMD_LOSTCTS)
930 			printk("%s: loss of CTS detected.\n",dev->name);
931 		else if(status & TCMD_UNDERRUN) {
932 			dev->stats.tx_fifo_errors++;
933 			printk("%s: DMA underrun detected.\n",dev->name);
934 		}
935 		else if(status & TCMD_MAXCOLL) {
936 			printk("%s: Max. collisions exceeded.\n",dev->name);
937 			dev->stats.collisions += 16;
938 		}
939 	}
940 
941 #if (NUM_XMIT_BUFFS > 1)
942 	if( (++p->xmit_last) == NUM_XMIT_BUFFS)
943 		p->xmit_last = 0;
944 #endif
945 	netif_wake_queue(dev);
946 }
947 
948 /***********************************************************
949  * (re)start the receiver
950  */
951 
startrecv586(struct net_device * dev)952 static void startrecv586(struct net_device *dev)
953 {
954 	struct priv *p = netdev_priv(dev);
955 
956 	WAIT_4_SCB_CMD();
957 	WAIT_4_SCB_CMD_RUC();
958 	p->scb->rfa_offset = make16(p->rfd_first);
959 	p->scb->cmd_ruc = RUC_START;
960 	sun3_attn586();		/* start cmd. */
961 	WAIT_4_SCB_CMD_RUC();	/* wait for accept cmd. (no timeout!!) */
962 }
963 
sun3_82586_timeout(struct net_device * dev,unsigned int txqueue)964 static void sun3_82586_timeout(struct net_device *dev, unsigned int txqueue)
965 {
966 	struct priv *p = netdev_priv(dev);
967 #ifndef NO_NOPCOMMANDS
968 	if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
969 	{
970 		netif_wake_queue(dev);
971 #ifdef DEBUG
972 		printk("%s: strange ... timeout with CU active?!?\n",dev->name);
973 		printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)swab16(p->xmit_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[1]->cmd_status),(int)p->nop_point);
974 #endif
975 		p->scb->cmd_cuc = CUC_ABORT;
976 		sun3_attn586();
977 		WAIT_4_SCB_CMD();
978 		p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
979 		p->scb->cmd_cuc = CUC_START;
980 		sun3_attn586();
981 		WAIT_4_SCB_CMD();
982 		netif_trans_update(dev); /* prevent tx timeout */
983 		return 0;
984 	}
985 #endif
986 	{
987 #ifdef DEBUG
988 		printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
989 		printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
990 		printk("%s: check, whether you set the right interrupt number!\n",dev->name);
991 #endif
992 		sun3_82586_close(dev);
993 		sun3_82586_open(dev);
994 	}
995 	netif_trans_update(dev); /* prevent tx timeout */
996 }
997 
998 /******************************************************
999  * send frame
1000  */
1001 
1002 static netdev_tx_t
sun3_82586_send_packet(struct sk_buff * skb,struct net_device * dev)1003 sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
1004 {
1005 	int len,i;
1006 #ifndef NO_NOPCOMMANDS
1007 	int next_nop;
1008 #endif
1009 	struct priv *p = netdev_priv(dev);
1010 
1011 	if(skb->len > XMIT_BUFF_SIZE)
1012 	{
1013 		printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1014 		return NETDEV_TX_OK;
1015 	}
1016 
1017 	netif_stop_queue(dev);
1018 
1019 #if(NUM_XMIT_BUFFS > 1)
1020 	if(test_and_set_bit(0,(void *) &p->lock)) {
1021 		printk("%s: Queue was locked\n",dev->name);
1022 		return NETDEV_TX_BUSY;
1023 	}
1024 	else
1025 #endif
1026 	{
1027 		len = skb->len;
1028 		if (len < ETH_ZLEN) {
1029 			memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1030 			       ETH_ZLEN);
1031 			len = ETH_ZLEN;
1032 		}
1033 		skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1034 
1035 #if (NUM_XMIT_BUFFS == 1)
1036 #	ifdef NO_NOPCOMMANDS
1037 
1038 #ifdef DEBUG
1039 		if(p->scb->cus & CU_ACTIVE)
1040 		{
1041 			printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1042 			printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1043 		}
1044 #endif
1045 
1046 		p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1047 		for(i=0;i<16;i++)
1048 		{
1049 			p->xmit_cmds[0]->cmd_status = 0;
1050 			WAIT_4_SCB_CMD();
1051 			if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1052 				p->scb->cmd_cuc = CUC_RESUME;
1053 			else
1054 			{
1055 				p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1056 				p->scb->cmd_cuc = CUC_START;
1057 			}
1058 
1059 			sun3_attn586();
1060 			if(!i)
1061 				dev_kfree_skb(skb);
1062 			WAIT_4_SCB_CMD();
1063 			if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1064 				break;
1065 			if(p->xmit_cmds[0]->cmd_status)
1066 				break;
1067 			if(i==15)
1068 				printk("%s: Can't start transmit-command.\n",dev->name);
1069 		}
1070 #	else
1071 		next_nop = (p->nop_point + 1) & 0x1;
1072 		p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1073 
1074 		p->xmit_cmds[0]->cmd_link	 = p->nop_cmds[next_nop]->cmd_link
1075 			= make16((p->nop_cmds[next_nop]));
1076 		p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1077 
1078 		p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1079 		p->nop_point = next_nop;
1080 		dev_kfree_skb(skb);
1081 #	endif
1082 #else
1083 		p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1084 		if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1085 			next_nop = 0;
1086 
1087 		p->xmit_cmds[p->xmit_count]->cmd_status	= 0;
1088 		/* linkpointer of xmit-command already points to next nop cmd */
1089 		p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1090 		p->nop_cmds[next_nop]->cmd_status = 0;
1091 
1092 		p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1093 		p->xmit_count = next_nop;
1094 
1095 		{
1096 			unsigned long flags;
1097 			local_irq_save(flags);
1098 			if(p->xmit_count != p->xmit_last)
1099 				netif_wake_queue(dev);
1100 			p->lock = 0;
1101 			local_irq_restore(flags);
1102 		}
1103 		dev_kfree_skb(skb);
1104 #endif
1105 	}
1106 	return NETDEV_TX_OK;
1107 }
1108 
1109 /*******************************************
1110  * Someone wanna have the statistics
1111  */
1112 
sun3_82586_get_stats(struct net_device * dev)1113 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1114 {
1115 	struct priv *p = netdev_priv(dev);
1116 	unsigned short crc,aln,rsc,ovrn;
1117 
1118 	crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1119 	p->scb->crc_errs = 0;
1120 	aln = swab16(p->scb->aln_errs);
1121 	p->scb->aln_errs = 0;
1122 	rsc = swab16(p->scb->rsc_errs);
1123 	p->scb->rsc_errs = 0;
1124 	ovrn = swab16(p->scb->ovrn_errs);
1125 	p->scb->ovrn_errs = 0;
1126 
1127 	dev->stats.rx_crc_errors += crc;
1128 	dev->stats.rx_fifo_errors += ovrn;
1129 	dev->stats.rx_frame_errors += aln;
1130 	dev->stats.rx_dropped += rsc;
1131 
1132 	return &dev->stats;
1133 }
1134 
1135 /********************************************************
1136  * Set MC list ..
1137  */
1138 
set_multicast_list(struct net_device * dev)1139 static void set_multicast_list(struct net_device *dev)
1140 {
1141 	netif_stop_queue(dev);
1142 	sun3_disint();
1143 	alloc586(dev);
1144 	init586(dev);
1145 	startrecv586(dev);
1146 	sun3_enaint();
1147 	netif_wake_queue(dev);
1148 }
1149 
1150 #if 0
1151 /*
1152  * DUMP .. we expect a not running CMD unit and enough space
1153  */
1154 void sun3_82586_dump(struct net_device *dev,void *ptr)
1155 {
1156 	struct priv *p = netdev_priv(dev);
1157 	struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1158 	int i;
1159 
1160 	p->scb->cmd_cuc = CUC_ABORT;
1161 	sun3_attn586();
1162 	WAIT_4_SCB_CMD();
1163 	WAIT_4_SCB_CMD_RUC();
1164 
1165 	dump_cmd->cmd_status = 0;
1166 	dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1167 	dump_cmd->dump_offset = make16((dump_cmd + 1));
1168 	dump_cmd->cmd_link = 0xffff;
1169 
1170 	p->scb->cbl_offset = make16(dump_cmd);
1171 	p->scb->cmd_cuc = CUC_START;
1172 	sun3_attn586();
1173 	WAIT_4_STAT_COMPL(dump_cmd);
1174 
1175 	if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1176 				printk("%s: Can't get dump information.\n",dev->name);
1177 
1178 	for(i=0;i<170;i++) {
1179 		printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1180 		if(i % 24 == 23)
1181 			printk("\n");
1182 	}
1183 	printk("\n");
1184 }
1185 #endif
1186