2 * Sun3 i82586 Ethernet driver
4 * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
6 * Original copyright follows:
7 * --------------------------
9 * net-3-driver for the NI5210 card (i82586 Ethernet chip)
11 * This is an extension to the Linux operating system, and is covered by the
12 * same Gnu Public License that covers that work.
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 * --------------------------
18 * Consult ni52.c for further notes from the original driver.
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.
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 */
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/string.h>
34 #include <linux/errno.h>
35 #include <linux/ioport.h>
36 #include <linux/slab.h>
37 #include <linux/interrupt.h>
38 #include <linux/delay.h>
39 #include <linux/init.h>
40 #include <linux/bitops.h>
42 #include <asm/idprom.h>
43 #include <asm/machines.h>
44 #include <asm/sun3mmu.h>
46 #include <asm/byteorder.h>
48 #include <linux/netdevice.h>
49 #include <linux/etherdevice.h>
50 #include <linux/skbuff.h>
52 #include "sun3_82586.h"
54 #define DRV_NAME "sun3_82586"
56 #define DEBUG /* debug on */
57 #define SYSBUSVAL 0 /* 16 Bit */
58 #define SUN3_82586_TOTAL_SIZE PAGE_SIZE
60 #define sun3_attn586() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
61 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
62 #define sun3_disint() {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
63 #define sun3_enaint() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
64 #define sun3_active() {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
66 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
67 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
68 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
70 /******************* how to calculate the buffers *****************************
72 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
73 * --------------- in a different (more stable?) mode. Only in this mode it's
74 * possible to configure the driver with 'NO_NOPCOMMANDS'
76 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
77 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
78 sizeof(rfd) = 24; sizeof(rbd) = 12;
79 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
82 * if you don't know the driver, better do not change these values: */
84 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
85 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
86 #define NUM_XMIT_BUFFS 1 /* config for 32K shmem */
87 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
88 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
89 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
90 #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
92 /**************************************************************************/
94 /* different DELAYs */
95 #define DELAY(x) mdelay(32 * x);
96 #define DELAY_16(); { udelay(16); }
97 #define DELAY_18(); { udelay(4); }
99 /* wait for command with timeout: */
100 #define WAIT_4_SCB_CMD() \
102 for(i=0;i<16384;i++) { \
103 if(!p->scb->cmd_cuc) break; \
106 printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
107 if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
109 #define WAIT_4_SCB_CMD_RUC() { int i; \
110 for(i=0;i<16384;i++) { \
111 if(!p->scb->cmd_ruc) break; \
114 printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
115 if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
117 #define WAIT_4_STAT_COMPL(addr) { int i; \
118 for(i=0;i<32767;i++) { \
119 if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
120 DELAY_16(); DELAY_16(); } }
122 static int sun3_82586_probe1(struct net_device *dev,int ioaddr);
123 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
124 static int sun3_82586_open(struct net_device *dev);
125 static int sun3_82586_close(struct net_device *dev);
126 static int sun3_82586_send_packet(struct sk_buff *,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);
131 static void sun3_82586_dump(struct net_device *,void *);
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);
146 struct net_device_stats stats;
151 volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
152 volatile struct scp_struct *scp; /* volatile is important */
153 volatile struct iscp_struct *iscp; /* volatile is important */
154 volatile struct scb_struct *scb; /* volatile is important */
155 volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
156 volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
157 #if (NUM_XMIT_BUFFS == 1)
158 volatile struct nop_cmd_struct *nop_cmds[2];
160 volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
162 volatile int nop_point,num_recv_buffs;
163 volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
164 volatile int xmit_count,xmit_last;
167 /**********************************************
170 static int sun3_82586_close(struct net_device *dev)
172 free_irq(dev->irq, dev);
174 sun3_reset586(); /* the hard way to stop the receiver */
176 netif_stop_queue(dev);
181 /**********************************************
184 static int sun3_82586_open(struct net_device *dev)
194 ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev);
201 netif_start_queue(dev);
203 return 0; /* most done by init */
206 /**********************************************
207 * Check to see if there's an 82586 out there.
209 static int check586(struct net_device *dev,char *where,unsigned size)
212 struct priv *p = /* (struct priv *) dev->priv*/ &pb;
216 p->base = (unsigned long) dvma_btov(0);
217 p->memtop = (char *)dvma_btov((unsigned long)where);
218 p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
219 memset((char *)p->scp,0, sizeof(struct scp_struct));
220 for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
221 if(((char *)p->scp)[i])
223 p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
224 if(p->scp->sysbus != SYSBUSVAL)
227 iscp_addr = (char *)dvma_btov((unsigned long)where);
229 p->iscp = (struct iscp_struct *) iscp_addr;
230 memset((char *)p->iscp,0, sizeof(struct iscp_struct));
232 p->scp->iscp = make24(p->iscp);
237 DELAY(1); /* wait a while... */
239 if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
245 /******************************************************************
246 * set iscp at the right place, called by sun3_82586_probe1 and open586.
248 static void alloc586(struct net_device *dev)
250 struct priv *p = (struct priv *) dev->priv;
255 p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
256 p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
257 p->scb = (struct scb_struct *) ((char *)p->iscp + sizeof(struct iscp_struct));
259 memset((char *) p->iscp,0,sizeof(struct iscp_struct));
260 memset((char *) p->scp ,0,sizeof(struct scp_struct));
262 p->scp->iscp = make24(p->iscp);
263 p->scp->sysbus = SYSBUSVAL;
264 p->iscp->scb_offset = make16(p->scb);
265 p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
274 printk("%s: Init-Problems (alloc).\n",dev->name);
278 memset((char *)p->scb,0,sizeof(struct scb_struct));
281 struct net_device * __init sun3_82586_probe(int unit)
283 struct net_device *dev;
284 unsigned long ioaddr;
285 static int found = 0;
288 /* check that this machine has an onboard 82586 */
289 switch(idprom->id_machtype) {
290 case SM_SUN3|SM_3_160:
291 case SM_SUN3|SM_3_260:
292 /* these machines have 82586 */
296 return ERR_PTR(-ENODEV);
300 return ERR_PTR(-ENODEV);
302 ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
304 return ERR_PTR(-ENOMEM);
307 dev = alloc_etherdev(sizeof(struct priv));
311 sprintf(dev->name, "eth%d", unit);
312 netdev_boot_setup_check(dev);
316 dev->base_addr = ioaddr;
317 err = sun3_82586_probe1(dev, ioaddr);
320 err = register_netdev(dev);
326 release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
330 iounmap((void __iomem *)ioaddr);
334 static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
338 if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
341 /* copy in the ethernet address from the prom */
342 for(i = 0; i < 6 ; i++)
343 dev->dev_addr[i] = idprom->id_ethaddr[i];
345 printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
348 * check (or search) IO-Memory, 32K
352 dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
353 dev->mem_end = dev->mem_start + size;
355 if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
356 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
360 if(!check586(dev,(char *) dev->mem_start,size)) {
361 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
366 ((struct priv *) (dev->priv))->memtop = (char *)dvma_btov(dev->mem_start);
367 ((struct priv *) (dev->priv))->base = (unsigned long) dvma_btov(0);
370 /* set number of receive-buffs according to memsize */
372 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
373 else if(size == 0x4000)
374 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
376 ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_32;
378 printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
380 dev->open = sun3_82586_open;
381 dev->stop = sun3_82586_close;
382 dev->get_stats = sun3_82586_get_stats;
383 dev->tx_timeout = sun3_82586_timeout;
384 dev->watchdog_timeo = HZ/20;
385 dev->hard_start_xmit = sun3_82586_send_packet;
386 dev->set_multicast_list = set_multicast_list;
391 release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
396 static int init586(struct net_device *dev)
400 struct priv *p = (struct priv *) dev->priv;
401 volatile struct configure_cmd_struct *cfg_cmd;
402 volatile struct iasetup_cmd_struct *ias_cmd;
403 volatile struct tdr_cmd_struct *tdr_cmd;
404 volatile struct mcsetup_cmd_struct *mc_cmd;
405 struct dev_mc_list *dmi=dev->mc_list;
406 int num_addrs=dev->mc_count;
408 ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
410 cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
411 cfg_cmd->cmd_status = 0;
412 cfg_cmd->cmd_cmd = swab16(CMD_CONFIGURE | CMD_LAST);
413 cfg_cmd->cmd_link = 0xffff;
415 cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
416 cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
417 cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
418 cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
419 cfg_cmd->priority = 0x00;
421 cfg_cmd->time_low = 0x00;
422 cfg_cmd->time_high = 0xf2;
423 cfg_cmd->promisc = 0;
424 if(dev->flags & IFF_ALLMULTI) {
425 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
426 if(num_addrs > len) {
427 printk("%s: switching to promisc. mode\n",dev->name);
428 cfg_cmd->promisc = 1;
431 if(dev->flags&IFF_PROMISC)
432 cfg_cmd->promisc = 1;
433 cfg_cmd->carr_coll = 0x00;
435 p->scb->cbl_offset = make16(cfg_cmd);
438 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
441 WAIT_4_STAT_COMPL(cfg_cmd);
443 if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
445 printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
450 * individual address setup
453 ias_cmd = (struct iasetup_cmd_struct *)ptr;
455 ias_cmd->cmd_status = 0;
456 ias_cmd->cmd_cmd = swab16(CMD_IASETUP | CMD_LAST);
457 ias_cmd->cmd_link = 0xffff;
459 memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
461 p->scb->cbl_offset = make16(ias_cmd);
463 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
466 WAIT_4_STAT_COMPL(ias_cmd);
468 if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
469 printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
474 * TDR, wire check .. e.g. no resistor e.t.c
477 tdr_cmd = (struct tdr_cmd_struct *)ptr;
479 tdr_cmd->cmd_status = 0;
480 tdr_cmd->cmd_cmd = swab16(CMD_TDR | CMD_LAST);
481 tdr_cmd->cmd_link = 0xffff;
484 p->scb->cbl_offset = make16(tdr_cmd);
485 p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
488 WAIT_4_STAT_COMPL(tdr_cmd);
490 if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
492 printk("%s: Problems while running the TDR.\n",dev->name);
496 DELAY_16(); /* wait for result */
497 result = swab16(tdr_cmd->status);
499 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
500 sun3_attn586(); /* ack the interrupts */
502 if(result & TDR_LNK_OK)
504 else if(result & TDR_XCVR_PRB)
505 printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
506 else if(result & TDR_ET_OPN)
507 printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
508 else if(result & TDR_ET_SRT)
510 if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
511 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
514 printk("%s: TDR: Unknown status %04x\n",dev->name,result);
520 if(num_addrs && !(dev->flags & IFF_PROMISC) )
522 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
523 mc_cmd->cmd_status = 0;
524 mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
525 mc_cmd->cmd_link = 0xffff;
526 mc_cmd->mc_cnt = swab16(num_addrs * 6);
528 for(i=0;i<num_addrs;i++,dmi=dmi->next)
529 memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
531 p->scb->cbl_offset = make16(mc_cmd);
532 p->scb->cmd_cuc = CUC_START;
535 WAIT_4_STAT_COMPL(mc_cmd);
537 if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
538 printk("%s: Can't apply multicast-address-list.\n",dev->name);
542 * alloc nop/xmit-cmds
544 #if (NUM_XMIT_BUFFS == 1)
547 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
548 p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP);
549 p->nop_cmds[i]->cmd_status = 0;
550 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
551 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
554 for(i=0;i<NUM_XMIT_BUFFS;i++)
556 p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
557 p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP);
558 p->nop_cmds[i]->cmd_status = 0;
559 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
560 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
564 ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
567 * alloc xmit-buffs / init xmit_cmds
569 for(i=0;i<NUM_XMIT_BUFFS;i++)
571 p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
572 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
573 p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
574 ptr = (char *) ptr + XMIT_BUFF_SIZE;
575 p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
576 ptr = (char *) ptr + sizeof(struct tbd_struct);
577 if((void *)ptr > (void *)dev->mem_end)
579 printk("%s: not enough shared-mem for your configuration!\n",dev->name);
582 memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
583 memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
584 p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
585 p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
586 p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
587 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
588 p->xmit_buffs[i]->next = 0xffff;
589 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
594 #ifndef NO_NOPCOMMANDS
599 * 'start transmitter'
601 #ifndef NO_NOPCOMMANDS
602 p->scb->cbl_offset = make16(p->nop_cmds[0]);
603 p->scb->cmd_cuc = CUC_START;
607 p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
608 p->xmit_cmds[0]->cmd_cmd = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
614 p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
624 /******************************************************
625 * This is a helper routine for sun3_82586_rnr_int() and init586().
626 * It sets up the Receive Frame Area (RFA).
629 static void *alloc_rfa(struct net_device *dev,void *ptr)
631 volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
632 volatile struct rbd_struct *rbd;
634 struct priv *p = (struct priv *) dev->priv;
636 memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
639 for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
640 rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
641 rfd[i].rbd_offset = 0xffff;
643 rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
645 ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
647 rbd = (struct rbd_struct *) ptr;
648 ptr = (void *) (rbd + p->num_recv_buffs);
650 /* clr descriptors */
651 memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
653 for(i=0;i<p->num_recv_buffs;i++)
655 rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
656 rbd[i].size = swab16(RECV_BUFF_SIZE);
657 rbd[i].buffer = make24(ptr);
658 ptr = (char *) ptr + RECV_BUFF_SIZE;
661 p->rfd_top = p->rfd_first;
662 p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
664 p->scb->rfa_offset = make16(p->rfd_first);
665 p->rfd_first->rbd_offset = make16(rbd);
671 /**************************************************
672 * Interrupt Handler ...
675 static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
677 struct net_device *dev = dev_id;
683 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
686 p = (struct priv *) dev->priv;
691 WAIT_4_SCB_CMD(); /* wait for last command */
693 while((stat=p->scb->cus & STAT_MASK))
695 p->scb->cmd_cuc = stat;
698 if(stat & STAT_FR) /* received a frame */
699 sun3_82586_rcv_int(dev);
701 if(stat & STAT_RNR) /* RU went 'not ready' */
704 if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
707 p->scb->cmd_ruc = RUC_RESUME;
709 WAIT_4_SCB_CMD_RUC();
713 printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
714 sun3_82586_rnr_int(dev);
718 if(stat & STAT_CX) /* command with I-bit set complete */
719 sun3_82586_xmt_int(dev);
721 #ifndef NO_NOPCOMMANDS
722 if(stat & STAT_CNA) /* CU went 'not ready' */
724 if(netif_running(dev))
725 printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
732 WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
733 if(p->scb->cmd_cuc) /* timed out? */
735 printk("%s: Acknowledge timed out.\n",dev->name);
746 /*******************************************************
750 static void sun3_82586_rcv_int(struct net_device *dev)
753 unsigned short totlen;
755 struct rbd_struct *rbd;
756 struct priv *p = (struct priv *) dev->priv;
761 for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
763 rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
765 if(status & RFD_OK) /* frame received without error? */
767 if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
769 totlen &= RBD_MASK; /* length of this frame */
771 skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
776 skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen);
777 skb->protocol=eth_type_trans(skb,dev);
779 p->stats.rx_packets++;
782 p->stats.rx_dropped++;
787 /* free all RBD's until RBD_LAST is set */
789 while(!((rstat=swab16(rbd->status)) & RBD_LAST))
791 totlen += rstat & RBD_MASK;
794 printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
798 rbd = (struct rbd_struct *) make32(rbd->next);
800 totlen += rstat & RBD_MASK;
802 printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
803 p->stats.rx_dropped++;
806 else /* frame !(ok), only with 'save-bad-frames' */
808 printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
809 p->stats.rx_errors++;
811 p->rfd_top->stat_high = 0;
812 p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
813 p->rfd_top->rbd_offset = 0xffff;
814 p->rfd_last->last = 0; /* delete RFD_SUSP */
815 p->rfd_last = p->rfd_top;
816 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
817 p->scb->rfa_offset = make16(p->rfd_top);
826 p->scb->cmd_ruc = RUC_RESUME;
828 WAIT_4_SCB_CMD_RUC();
836 if(p->rfd_top->status)
840 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
849 volatile struct rfd_struct *rfds=p->rfd_top;
850 volatile struct rbd_struct *rbds;
851 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
852 for(i=0;i< (p->num_recv_buffs+4);i++)
854 rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
855 printk("%04x:%04x ",rfds->status,rbds->status);
856 rfds = (struct rfd_struct *) make32(rfds->next);
858 printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
859 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);
861 old_at_least = at_least_one;
868 /**********************************************************
869 * handle 'Receiver went not ready'.
872 static void sun3_82586_rnr_int(struct net_device *dev)
874 struct priv *p = (struct priv *) dev->priv;
876 p->stats.rx_errors++;
878 WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
879 p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
881 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
883 alloc_rfa(dev,(char *)p->rfd_first);
884 /* maybe add a check here, before restarting the RU */
885 startrecv586(dev); /* restart RU */
887 printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
891 /**********************************************************
892 * handle xmit - interrupt
895 static void sun3_82586_xmt_int(struct net_device *dev)
898 struct priv *p = (struct priv *) dev->priv;
903 status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
904 if(!(status & STAT_COMPL))
905 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
909 p->stats.tx_packets++;
910 p->stats.collisions += (status & TCMD_MAXCOLLMASK);
914 p->stats.tx_errors++;
915 if(status & TCMD_LATECOLL) {
916 printk("%s: late collision detected.\n",dev->name);
917 p->stats.collisions++;
919 else if(status & TCMD_NOCARRIER) {
920 p->stats.tx_carrier_errors++;
921 printk("%s: no carrier detected.\n",dev->name);
923 else if(status & TCMD_LOSTCTS)
924 printk("%s: loss of CTS detected.\n",dev->name);
925 else if(status & TCMD_UNDERRUN) {
926 p->stats.tx_fifo_errors++;
927 printk("%s: DMA underrun detected.\n",dev->name);
929 else if(status & TCMD_MAXCOLL) {
930 printk("%s: Max. collisions exceeded.\n",dev->name);
931 p->stats.collisions += 16;
935 #if (NUM_XMIT_BUFFS > 1)
936 if( (++p->xmit_last) == NUM_XMIT_BUFFS)
939 netif_wake_queue(dev);
942 /***********************************************************
943 * (re)start the receiver
946 static void startrecv586(struct net_device *dev)
948 struct priv *p = (struct priv *) dev->priv;
951 WAIT_4_SCB_CMD_RUC();
952 p->scb->rfa_offset = make16(p->rfd_first);
953 p->scb->cmd_ruc = RUC_START;
954 sun3_attn586(); /* start cmd. */
955 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
958 static void sun3_82586_timeout(struct net_device *dev)
960 struct priv *p = (struct priv *) dev->priv;
961 #ifndef NO_NOPCOMMANDS
962 if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
964 netif_wake_queue(dev);
966 printk("%s: strange ... timeout with CU active?!?\n",dev->name);
967 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);
969 p->scb->cmd_cuc = CUC_ABORT;
972 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
973 p->scb->cmd_cuc = CUC_START;
976 dev->trans_start = jiffies;
982 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
983 printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
984 printk("%s: check, whether you set the right interrupt number!\n",dev->name);
986 sun3_82586_close(dev);
987 sun3_82586_open(dev);
989 dev->trans_start = jiffies;
992 /******************************************************
996 static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
999 #ifndef NO_NOPCOMMANDS
1002 struct priv *p = (struct priv *) dev->priv;
1004 if(skb->len > XMIT_BUFF_SIZE)
1006 printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
1010 netif_stop_queue(dev);
1012 #if(NUM_XMIT_BUFFS > 1)
1013 if(test_and_set_bit(0,(void *) &p->lock)) {
1014 printk("%s: Queue was locked\n",dev->name);
1021 if (len < ETH_ZLEN) {
1022 memset((void *)p->xmit_cbuffs[p->xmit_count], 0,
1026 skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len);
1028 #if (NUM_XMIT_BUFFS == 1)
1029 # ifdef NO_NOPCOMMANDS
1032 if(p->scb->cus & CU_ACTIVE)
1034 printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
1035 printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
1039 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1042 p->xmit_cmds[0]->cmd_status = 0;
1044 if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
1045 p->scb->cmd_cuc = CUC_RESUME;
1048 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1049 p->scb->cmd_cuc = CUC_START;
1053 dev->trans_start = jiffies;
1057 if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
1059 if(p->xmit_cmds[0]->cmd_status)
1062 printk("%s: Can't start transmit-command.\n",dev->name);
1065 next_nop = (p->nop_point + 1) & 0x1;
1066 p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
1068 p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
1069 = make16((p->nop_cmds[next_nop]));
1070 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1072 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1073 dev->trans_start = jiffies;
1074 p->nop_point = next_nop;
1078 p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
1079 if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
1082 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1083 /* linkpointer of xmit-command already points to next nop cmd */
1084 p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
1085 p->nop_cmds[next_nop]->cmd_status = 0;
1087 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1088 dev->trans_start = jiffies;
1089 p->xmit_count = next_nop;
1092 unsigned long flags;
1093 local_irq_save(flags);
1094 if(p->xmit_count != p->xmit_last)
1095 netif_wake_queue(dev);
1097 local_irq_restore(flags);
1105 /*******************************************
1106 * Someone wanna have the statistics
1109 static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
1111 struct priv *p = (struct priv *) dev->priv;
1112 unsigned short crc,aln,rsc,ovrn;
1114 crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
1115 p->scb->crc_errs = 0;
1116 aln = swab16(p->scb->aln_errs);
1117 p->scb->aln_errs = 0;
1118 rsc = swab16(p->scb->rsc_errs);
1119 p->scb->rsc_errs = 0;
1120 ovrn = swab16(p->scb->ovrn_errs);
1121 p->scb->ovrn_errs = 0;
1123 p->stats.rx_crc_errors += crc;
1124 p->stats.rx_fifo_errors += ovrn;
1125 p->stats.rx_frame_errors += aln;
1126 p->stats.rx_dropped += rsc;
1131 /********************************************************
1135 static void set_multicast_list(struct net_device *dev)
1137 netif_stop_queue(dev);
1143 netif_wake_queue(dev);
1147 #error This code is not currently supported as a module
1148 static struct net_device *dev_sun3_82586;
1150 int init_module(void)
1152 dev_sun3_82586 = sun3_82586_probe(-1);
1153 if (IS_ERR(dev_sun3_82586))
1154 return PTR_ERR(dev_sun3_82586);
1158 void cleanup_module(void)
1160 unsigned long ioaddr = dev_sun3_82586->base_addr;
1161 unregister_netdev(dev_sun3_82586);
1162 release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
1163 iounmap((void *)ioaddr);
1164 free_netdev(dev_sun3_82586);
1170 * DUMP .. we expect a not running CMD unit and enough space
1172 void sun3_82586_dump(struct net_device *dev,void *ptr)
1174 struct priv *p = (struct priv *) dev->priv;
1175 struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
1178 p->scb->cmd_cuc = CUC_ABORT;
1181 WAIT_4_SCB_CMD_RUC();
1183 dump_cmd->cmd_status = 0;
1184 dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
1185 dump_cmd->dump_offset = make16((dump_cmd + 1));
1186 dump_cmd->cmd_link = 0xffff;
1188 p->scb->cbl_offset = make16(dump_cmd);
1189 p->scb->cmd_cuc = CUC_START;
1191 WAIT_4_STAT_COMPL(dump_cmd);
1193 if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
1194 printk("%s: Can't get dump information.\n",dev->name);
1196 for(i=0;i<170;i++) {
1197 printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
1205 MODULE_LICENSE("GPL");