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 /* #define REALLY_SLOW_IO */
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/string.h>
36 #include <linux/errno.h>
37 #include <linux/ioport.h>
38 #include <linux/slab.h>
39 #include <linux/interrupt.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/bitops.h>
44 #include <asm/idprom.h>
45 #include <asm/machines.h>
46 #include <asm/sun3mmu.h>
48 #include <asm/byteorder.h>
50 #include <linux/netdevice.h>
51 #include <linux/etherdevice.h>
52 #include <linux/skbuff.h>
54 #include "sun3_82586.h"
56 #define DRV_NAME "sun3_82586"
58 #define DEBUG /* debug on */
59 #define SYSBUSVAL 0 /* 16 Bit */
60 #define SUN3_82586_TOTAL_SIZE PAGE_SIZE
62 #define sun3_attn586() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
63 #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
64 #define sun3_disint() {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
65 #define sun3_enaint() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
66 #define sun3_active() {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
68 #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
69 #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
70 #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
72 /******************* how to calculate the buffers *****************************
74 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
75 * --------------- in a different (more stable?) mode. Only in this mode it's
76 * possible to configure the driver with 'NO_NOPCOMMANDS'
78 sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
79 sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
80 sizeof(rfd) = 24; sizeof(rbd) = 12;
81 sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
84 * if you don't know the driver, better do not change these values: */
86 #define RECV_BUFF_SIZE 1536 /* slightly oversized */
87 #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
88 #define NUM_XMIT_BUFFS 1 /* config for 32K shmem */
89 #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
90 #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
91 #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
92 #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
94 /**************************************************************************/
96 /* different DELAYs */
97 #define DELAY(x) mdelay(32 * x);
98 #define DELAY_16(); { udelay(16); }
99 #define DELAY_18(); { udelay(4); }
101 /* wait for command with timeout: */
102 #define WAIT_4_SCB_CMD() \
104 for(i=0;i<16384;i++) { \
105 if(!p->scb->cmd_cuc) break; \
108 printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
109 if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
111 #define WAIT_4_SCB_CMD_RUC() { int i; \
112 for(i=0;i<16384;i++) { \
113 if(!p->scb->cmd_ruc) break; \
116 printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
117 if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
119 #define WAIT_4_STAT_COMPL(addr) { int i; \
120 for(i=0;i<32767;i++) { \
121 if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
122 DELAY_16(); DELAY_16(); } }
124 static int sun3_82586_probe1(struct net_device
*dev
,int ioaddr
);
125 static irqreturn_t
sun3_82586_interrupt(int irq
,void *dev_id
,struct pt_regs
*reg_ptr
);
126 static int sun3_82586_open(struct net_device
*dev
);
127 static int sun3_82586_close(struct net_device
*dev
);
128 static int sun3_82586_send_packet(struct sk_buff
*,struct net_device
*);
129 static struct net_device_stats
*sun3_82586_get_stats(struct net_device
*dev
);
130 static void set_multicast_list(struct net_device
*dev
);
131 static void sun3_82586_timeout(struct net_device
*dev
);
133 static void sun3_82586_dump(struct net_device
*,void *);
136 /* helper-functions */
137 static int init586(struct net_device
*dev
);
138 static int check586(struct net_device
*dev
,char *where
,unsigned size
);
139 static void alloc586(struct net_device
*dev
);
140 static void startrecv586(struct net_device
*dev
);
141 static void *alloc_rfa(struct net_device
*dev
,void *ptr
);
142 static void sun3_82586_rcv_int(struct net_device
*dev
);
143 static void sun3_82586_xmt_int(struct net_device
*dev
);
144 static void sun3_82586_rnr_int(struct net_device
*dev
);
148 struct net_device_stats stats
;
153 volatile struct rfd_struct
*rfd_last
,*rfd_top
,*rfd_first
;
154 volatile struct scp_struct
*scp
; /* volatile is important */
155 volatile struct iscp_struct
*iscp
; /* volatile is important */
156 volatile struct scb_struct
*scb
; /* volatile is important */
157 volatile struct tbd_struct
*xmit_buffs
[NUM_XMIT_BUFFS
];
158 volatile struct transmit_cmd_struct
*xmit_cmds
[NUM_XMIT_BUFFS
];
159 #if (NUM_XMIT_BUFFS == 1)
160 volatile struct nop_cmd_struct
*nop_cmds
[2];
162 volatile struct nop_cmd_struct
*nop_cmds
[NUM_XMIT_BUFFS
];
164 volatile int nop_point
,num_recv_buffs
;
165 volatile char *xmit_cbuffs
[NUM_XMIT_BUFFS
];
166 volatile int xmit_count
,xmit_last
;
169 /**********************************************
172 static int sun3_82586_close(struct net_device
*dev
)
174 free_irq(dev
->irq
, dev
);
176 sun3_reset586(); /* the hard way to stop the receiver */
178 netif_stop_queue(dev
);
183 /**********************************************
186 static int sun3_82586_open(struct net_device
*dev
)
196 ret
= request_irq(dev
->irq
, &sun3_82586_interrupt
,0,dev
->name
,dev
);
203 netif_start_queue(dev
);
205 return 0; /* most done by init */
208 /**********************************************
209 * Check to see if there's an 82586 out there.
211 static int check586(struct net_device
*dev
,char *where
,unsigned size
)
214 struct priv
*p
= /* (struct priv *) dev->priv*/ &pb
;
218 p
->base
= (unsigned long) dvma_btov(0);
219 p
->memtop
= (char *)dvma_btov((unsigned long)where
);
220 p
->scp
= (struct scp_struct
*)(p
->base
+ SCP_DEFAULT_ADDRESS
);
221 memset((char *)p
->scp
,0, sizeof(struct scp_struct
));
222 for(i
=0;i
<sizeof(struct scp_struct
);i
++) /* memory was writeable? */
223 if(((char *)p
->scp
)[i
])
225 p
->scp
->sysbus
= SYSBUSVAL
; /* 1 = 8Bit-Bus, 0 = 16 Bit */
226 if(p
->scp
->sysbus
!= SYSBUSVAL
)
229 iscp_addr
= (char *)dvma_btov((unsigned long)where
);
231 p
->iscp
= (struct iscp_struct
*) iscp_addr
;
232 memset((char *)p
->iscp
,0, sizeof(struct iscp_struct
));
234 p
->scp
->iscp
= make24(p
->iscp
);
239 DELAY(1); /* wait a while... */
241 if(p
->iscp
->busy
) /* i82586 clears 'busy' after successful init */
247 /******************************************************************
248 * set iscp at the right place, called by sun3_82586_probe1 and open586.
250 static void alloc586(struct net_device
*dev
)
252 struct priv
*p
= (struct priv
*) dev
->priv
;
257 p
->scp
= (struct scp_struct
*) (p
->base
+ SCP_DEFAULT_ADDRESS
);
258 p
->iscp
= (struct iscp_struct
*) dvma_btov(dev
->mem_start
);
259 p
->scb
= (struct scb_struct
*) ((char *)p
->iscp
+ sizeof(struct iscp_struct
));
261 memset((char *) p
->iscp
,0,sizeof(struct iscp_struct
));
262 memset((char *) p
->scp
,0,sizeof(struct scp_struct
));
264 p
->scp
->iscp
= make24(p
->iscp
);
265 p
->scp
->sysbus
= SYSBUSVAL
;
266 p
->iscp
->scb_offset
= make16(p
->scb
);
267 p
->iscp
->scb_base
= make24(dvma_btov(dev
->mem_start
));
276 printk("%s: Init-Problems (alloc).\n",dev
->name
);
280 memset((char *)p
->scb
,0,sizeof(struct scb_struct
));
283 struct net_device
* __init
sun3_82586_probe(int unit
)
285 struct net_device
*dev
;
286 unsigned long ioaddr
;
287 static int found
= 0;
290 /* check that this machine has an onboard 82586 */
291 switch(idprom
->id_machtype
) {
292 case SM_SUN3
|SM_3_160
:
293 case SM_SUN3
|SM_3_260
:
294 /* these machines have 82586 */
298 return ERR_PTR(-ENODEV
);
302 return ERR_PTR(-ENODEV
);
304 ioaddr
= (unsigned long)ioremap(IE_OBIO
, SUN3_82586_TOTAL_SIZE
);
306 return ERR_PTR(-ENOMEM
);
309 dev
= alloc_etherdev(sizeof(struct priv
));
313 sprintf(dev
->name
, "eth%d", unit
);
314 netdev_boot_setup_check(dev
);
316 SET_MODULE_OWNER(dev
);
319 dev
->base_addr
= ioaddr
;
320 err
= sun3_82586_probe1(dev
, ioaddr
);
323 err
= register_netdev(dev
);
329 release_region(ioaddr
, SUN3_82586_TOTAL_SIZE
);
333 iounmap((void *)ioaddr
);
337 static int __init
sun3_82586_probe1(struct net_device
*dev
,int ioaddr
)
341 if (!request_region(ioaddr
, SUN3_82586_TOTAL_SIZE
, DRV_NAME
))
344 /* copy in the ethernet address from the prom */
345 for(i
= 0; i
< 6 ; i
++)
346 dev
->dev_addr
[i
] = idprom
->id_ethaddr
[i
];
348 printk("%s: SUN3 Intel 82586 found at %lx, ",dev
->name
,dev
->base_addr
);
351 * check (or search) IO-Memory, 32K
355 dev
->mem_start
= (unsigned long)dvma_malloc_align(0x8000, 0x1000);
356 dev
->mem_end
= dev
->mem_start
+ size
;
358 if(size
!= 0x2000 && size
!= 0x4000 && size
!= 0x8000) {
359 printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev
->name
,size
);
363 if(!check586(dev
,(char *) dev
->mem_start
,size
)) {
364 printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev
->mem_start
,size
);
369 ((struct priv
*) (dev
->priv
))->memtop
= (char *)dvma_btov(dev
->mem_start
);
370 ((struct priv
*) (dev
->priv
))->base
= (unsigned long) dvma_btov(0);
373 /* set number of receive-buffs according to memsize */
375 ((struct priv
*) dev
->priv
)->num_recv_buffs
= NUM_RECV_BUFFS_8
;
376 else if(size
== 0x4000)
377 ((struct priv
*) dev
->priv
)->num_recv_buffs
= NUM_RECV_BUFFS_16
;
379 ((struct priv
*) dev
->priv
)->num_recv_buffs
= NUM_RECV_BUFFS_32
;
381 printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev
->mem_start
,size
, dev
->irq
);
383 dev
->open
= sun3_82586_open
;
384 dev
->stop
= sun3_82586_close
;
385 dev
->get_stats
= sun3_82586_get_stats
;
386 dev
->tx_timeout
= sun3_82586_timeout
;
387 dev
->watchdog_timeo
= HZ
/20;
388 dev
->hard_start_xmit
= sun3_82586_send_packet
;
389 dev
->set_multicast_list
= set_multicast_list
;
394 release_region(ioaddr
, SUN3_82586_TOTAL_SIZE
);
399 static int init586(struct net_device
*dev
)
403 struct priv
*p
= (struct priv
*) dev
->priv
;
404 volatile struct configure_cmd_struct
*cfg_cmd
;
405 volatile struct iasetup_cmd_struct
*ias_cmd
;
406 volatile struct tdr_cmd_struct
*tdr_cmd
;
407 volatile struct mcsetup_cmd_struct
*mc_cmd
;
408 struct dev_mc_list
*dmi
=dev
->mc_list
;
409 int num_addrs
=dev
->mc_count
;
411 ptr
= (void *) ((char *)p
->scb
+ sizeof(struct scb_struct
));
413 cfg_cmd
= (struct configure_cmd_struct
*)ptr
; /* configure-command */
414 cfg_cmd
->cmd_status
= 0;
415 cfg_cmd
->cmd_cmd
= swab16(CMD_CONFIGURE
| CMD_LAST
);
416 cfg_cmd
->cmd_link
= 0xffff;
418 cfg_cmd
->byte_cnt
= 0x0a; /* number of cfg bytes */
419 cfg_cmd
->fifo
= fifo
; /* fifo-limit (8=tx:32/rx:64) */
420 cfg_cmd
->sav_bf
= 0x40; /* hold or discard bad recv frames (bit 7) */
421 cfg_cmd
->adr_len
= 0x2e; /* addr_len |!src_insert |pre-len |loopback */
422 cfg_cmd
->priority
= 0x00;
424 cfg_cmd
->time_low
= 0x00;
425 cfg_cmd
->time_high
= 0xf2;
426 cfg_cmd
->promisc
= 0;
427 if(dev
->flags
& IFF_ALLMULTI
) {
428 int len
= ((char *) p
->iscp
- (char *) ptr
- 8) / 6;
429 if(num_addrs
> len
) {
430 printk("%s: switching to promisc. mode\n",dev
->name
);
431 dev
->flags
|=IFF_PROMISC
;
434 if(dev
->flags
&IFF_PROMISC
)
437 dev
->flags
|=IFF_PROMISC
;
439 cfg_cmd
->carr_coll
= 0x00;
441 p
->scb
->cbl_offset
= make16(cfg_cmd
);
444 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
447 WAIT_4_STAT_COMPL(cfg_cmd
);
449 if((swab16(cfg_cmd
->cmd_status
) & (STAT_OK
|STAT_COMPL
)) != (STAT_COMPL
|STAT_OK
))
451 printk("%s: configure command failed: %x\n",dev
->name
,swab16(cfg_cmd
->cmd_status
));
456 * individual address setup
459 ias_cmd
= (struct iasetup_cmd_struct
*)ptr
;
461 ias_cmd
->cmd_status
= 0;
462 ias_cmd
->cmd_cmd
= swab16(CMD_IASETUP
| CMD_LAST
);
463 ias_cmd
->cmd_link
= 0xffff;
465 memcpy((char *)&ias_cmd
->iaddr
,(char *) dev
->dev_addr
,ETH_ALEN
);
467 p
->scb
->cbl_offset
= make16(ias_cmd
);
469 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
472 WAIT_4_STAT_COMPL(ias_cmd
);
474 if((swab16(ias_cmd
->cmd_status
) & (STAT_OK
|STAT_COMPL
)) != (STAT_OK
|STAT_COMPL
)) {
475 printk("%s (82586): individual address setup command failed: %04x\n",dev
->name
,swab16(ias_cmd
->cmd_status
));
480 * TDR, wire check .. e.g. no resistor e.t.c
483 tdr_cmd
= (struct tdr_cmd_struct
*)ptr
;
485 tdr_cmd
->cmd_status
= 0;
486 tdr_cmd
->cmd_cmd
= swab16(CMD_TDR
| CMD_LAST
);
487 tdr_cmd
->cmd_link
= 0xffff;
490 p
->scb
->cbl_offset
= make16(tdr_cmd
);
491 p
->scb
->cmd_cuc
= CUC_START
; /* cmd.-unit start */
494 WAIT_4_STAT_COMPL(tdr_cmd
);
496 if(!(swab16(tdr_cmd
->cmd_status
) & STAT_COMPL
))
498 printk("%s: Problems while running the TDR.\n",dev
->name
);
502 DELAY_16(); /* wait for result */
503 result
= swab16(tdr_cmd
->status
);
505 p
->scb
->cmd_cuc
= p
->scb
->cus
& STAT_MASK
;
506 sun3_attn586(); /* ack the interrupts */
508 if(result
& TDR_LNK_OK
)
510 else if(result
& TDR_XCVR_PRB
)
511 printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev
->name
);
512 else if(result
& TDR_ET_OPN
)
513 printk("%s: TDR: No correct termination %d clocks away.\n",dev
->name
,result
& TDR_TIMEMASK
);
514 else if(result
& TDR_ET_SRT
)
516 if (result
& TDR_TIMEMASK
) /* time == 0 -> strange :-) */
517 printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev
->name
,result
& TDR_TIMEMASK
);
520 printk("%s: TDR: Unknown status %04x\n",dev
->name
,result
);
526 if(num_addrs
&& !(dev
->flags
& IFF_PROMISC
) )
528 mc_cmd
= (struct mcsetup_cmd_struct
*) ptr
;
529 mc_cmd
->cmd_status
= 0;
530 mc_cmd
->cmd_cmd
= swab16(CMD_MCSETUP
| CMD_LAST
);
531 mc_cmd
->cmd_link
= 0xffff;
532 mc_cmd
->mc_cnt
= swab16(num_addrs
* 6);
534 for(i
=0;i
<num_addrs
;i
++,dmi
=dmi
->next
)
535 memcpy((char *) mc_cmd
->mc_list
[i
], dmi
->dmi_addr
,6);
537 p
->scb
->cbl_offset
= make16(mc_cmd
);
538 p
->scb
->cmd_cuc
= CUC_START
;
541 WAIT_4_STAT_COMPL(mc_cmd
);
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
);
548 * alloc nop/xmit-cmds
550 #if (NUM_XMIT_BUFFS == 1)
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
);
560 for(i
=0;i
<NUM_XMIT_BUFFS
;i
++)
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
);
570 ptr
= alloc_rfa(dev
,(void *)ptr
); /* init receive-frame-area */
573 * alloc xmit-buffs / init xmit_cmds
575 for(i
=0;i
<NUM_XMIT_BUFFS
;i
++)
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((void *)ptr
> (void *)dev
->mem_end
)
585 printk("%s: not enough shared-mem for your configuration!\n",dev
->name
);
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
]));
600 #ifndef NO_NOPCOMMANDS
605 * 'start transmitter'
607 #ifndef NO_NOPCOMMANDS
608 p
->scb
->cbl_offset
= make16(p
->nop_cmds
[0]);
609 p
->scb
->cmd_cuc
= CUC_START
;
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
);
620 p
->scb
->cmd_cuc
= p
->scb
->cus
& STAT_MASK
;
630 /******************************************************
631 * This is a helper routine for sun3_82586_rnr_int() and init586().
632 * It sets up the Receive Frame Area (RFA).
635 static void *alloc_rfa(struct net_device
*dev
,void *ptr
)
637 volatile struct rfd_struct
*rfd
= (struct rfd_struct
*)ptr
;
638 volatile struct rbd_struct
*rbd
;
640 struct priv
*p
= (struct priv
*) dev
->priv
;
642 memset((char *) rfd
,0,sizeof(struct rfd_struct
)*(p
->num_recv_buffs
+rfdadd
));
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;
649 rfd
[p
->num_recv_buffs
-1+rfdadd
].last
= RFD_SUSP
; /* RU suspend */
651 ptr
= (void *) (rfd
+ (p
->num_recv_buffs
+ rfdadd
) );
653 rbd
= (struct rbd_struct
*) ptr
;
654 ptr
= (void *) (rbd
+ p
->num_recv_buffs
);
656 /* clr descriptors */
657 memset((char *) rbd
,0,sizeof(struct rbd_struct
)*(p
->num_recv_buffs
));
659 for(i
=0;i
<p
->num_recv_buffs
;i
++)
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
;
667 p
->rfd_top
= p
->rfd_first
;
668 p
->rfd_last
= p
->rfd_first
+ (p
->num_recv_buffs
- 1 + rfdadd
);
670 p
->scb
->rfa_offset
= make16(p
->rfd_first
);
671 p
->rfd_first
->rbd_offset
= make16(rbd
);
677 /**************************************************
678 * Interrupt Handler ...
681 static irqreturn_t
sun3_82586_interrupt(int irq
,void *dev_id
,struct pt_regs
*reg_ptr
)
683 struct net_device
*dev
= dev_id
;
689 printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq
);
692 p
= (struct priv
*) dev
->priv
;
697 WAIT_4_SCB_CMD(); /* wait for last command */
699 while((stat
=p
->scb
->cus
& STAT_MASK
))
701 p
->scb
->cmd_cuc
= stat
;
704 if(stat
& STAT_FR
) /* received a frame */
705 sun3_82586_rcv_int(dev
);
707 if(stat
& STAT_RNR
) /* RU went 'not ready' */
710 if(p
->scb
->rus
& RU_SUSPEND
) /* special case: RU_SUSPEND */
713 p
->scb
->cmd_ruc
= RUC_RESUME
;
715 WAIT_4_SCB_CMD_RUC();
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
);
724 if(stat
& STAT_CX
) /* command with I-bit set complete */
725 sun3_82586_xmt_int(dev
);
727 #ifndef NO_NOPCOMMANDS
728 if(stat
& STAT_CNA
) /* CU went 'not ready' */
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
);
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? */
741 printk("%s: Acknowledge timed out.\n",dev
->name
);
752 /*******************************************************
756 static void sun3_82586_rcv_int(struct net_device
*dev
)
759 unsigned short totlen
;
761 struct rbd_struct
*rbd
;
762 struct priv
*p
= (struct priv
*) dev
->priv
;
767 for(;(status
= p
->rfd_top
->stat_high
) & RFD_COMPL
;)
769 rbd
= (struct rbd_struct
*) make32(p
->rfd_top
->rbd_offset
);
771 if(status
& RFD_OK
) /* frame received without error? */
773 if( (totlen
= swab16(rbd
->status
)) & RBD_LAST
) /* the first and the last buffer? */
775 totlen
&= RBD_MASK
; /* length of this frame */
777 skb
= (struct sk_buff
*) dev_alloc_skb(totlen
+2);
783 eth_copy_and_sum(skb
,(char *) p
->base
+swab32((unsigned long) rbd
->buffer
),totlen
,0);
784 skb
->protocol
=eth_type_trans(skb
,dev
);
786 p
->stats
.rx_packets
++;
789 p
->stats
.rx_dropped
++;
794 /* free all RBD's until RBD_LAST is set */
796 while(!((rstat
=swab16(rbd
->status
)) & RBD_LAST
))
798 totlen
+= rstat
& RBD_MASK
;
801 printk("%s: Whoops .. no end mark in RBD list\n",dev
->name
);
805 rbd
= (struct rbd_struct
*) make32(rbd
->next
);
807 totlen
+= rstat
& RBD_MASK
;
809 printk("%s: received oversized frame! length: %d\n",dev
->name
,totlen
);
810 p
->stats
.rx_dropped
++;
813 else /* frame !(ok), only with 'save-bad-frames' */
815 printk("%s: oops! rfd-error-status: %04x\n",dev
->name
,status
);
816 p
->stats
.rx_errors
++;
818 p
->rfd_top
->stat_high
= 0;
819 p
->rfd_top
->last
= RFD_SUSP
; /* maybe exchange by RFD_LAST */
820 p
->rfd_top
->rbd_offset
= 0xffff;
821 p
->rfd_last
->last
= 0; /* delete RFD_SUSP */
822 p
->rfd_last
= p
->rfd_top
;
823 p
->rfd_top
= (struct rfd_struct
*) make32(p
->rfd_top
->next
); /* step to next RFD */
824 p
->scb
->rfa_offset
= make16(p
->rfd_top
);
833 p
->scb
->cmd_ruc
= RUC_RESUME
;
835 WAIT_4_SCB_CMD_RUC();
843 if(p
->rfd_top
->status
)
847 printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev
->name
);
856 volatile struct rfd_struct
*rfds
=p
->rfd_top
;
857 volatile struct rbd_struct
*rbds
;
858 printk("%s: received a FC intr. without having a frame: %04x %d\n",dev
->name
,status
,old_at_least
);
859 for(i
=0;i
< (p
->num_recv_buffs
+4);i
++)
861 rbds
= (struct rbd_struct
*) make32(rfds
->rbd_offset
);
862 printk("%04x:%04x ",rfds
->status
,rbds
->status
);
863 rfds
= (struct rfd_struct
*) make32(rfds
->next
);
865 printk("\nerrs: %04x %04x stat: %04x\n",(int)p
->scb
->rsc_errs
,(int)p
->scb
->ovrn_errs
,(int)p
->scb
->status
);
866 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
);
868 old_at_least
= at_least_one
;
875 /**********************************************************
876 * handle 'Receiver went not ready'.
879 static void sun3_82586_rnr_int(struct net_device
*dev
)
881 struct priv
*p
= (struct priv
*) dev
->priv
;
883 p
->stats
.rx_errors
++;
885 WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
886 p
->scb
->cmd_ruc
= RUC_ABORT
; /* usually the RU is in the 'no resource'-state .. abort it now. */
888 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
890 alloc_rfa(dev
,(char *)p
->rfd_first
);
891 /* maybe add a check here, before restarting the RU */
892 startrecv586(dev
); /* restart RU */
894 printk("%s: Receive-Unit restarted. Status: %04x\n",dev
->name
,p
->scb
->rus
);
898 /**********************************************************
899 * handle xmit - interrupt
902 static void sun3_82586_xmt_int(struct net_device
*dev
)
905 struct priv
*p
= (struct priv
*) dev
->priv
;
910 status
= swab16(p
->xmit_cmds
[p
->xmit_last
]->cmd_status
);
911 if(!(status
& STAT_COMPL
))
912 printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev
->name
);
916 p
->stats
.tx_packets
++;
917 p
->stats
.collisions
+= (status
& TCMD_MAXCOLLMASK
);
921 p
->stats
.tx_errors
++;
922 if(status
& TCMD_LATECOLL
) {
923 printk("%s: late collision detected.\n",dev
->name
);
924 p
->stats
.collisions
++;
926 else if(status
& TCMD_NOCARRIER
) {
927 p
->stats
.tx_carrier_errors
++;
928 printk("%s: no carrier detected.\n",dev
->name
);
930 else if(status
& TCMD_LOSTCTS
)
931 printk("%s: loss of CTS detected.\n",dev
->name
);
932 else if(status
& TCMD_UNDERRUN
) {
933 p
->stats
.tx_fifo_errors
++;
934 printk("%s: DMA underrun detected.\n",dev
->name
);
936 else if(status
& TCMD_MAXCOLL
) {
937 printk("%s: Max. collisions exceeded.\n",dev
->name
);
938 p
->stats
.collisions
+= 16;
942 #if (NUM_XMIT_BUFFS > 1)
943 if( (++p
->xmit_last
) == NUM_XMIT_BUFFS
)
946 netif_wake_queue(dev
);
949 /***********************************************************
950 * (re)start the receiver
953 static void startrecv586(struct net_device
*dev
)
955 struct priv
*p
= (struct priv
*) dev
->priv
;
958 WAIT_4_SCB_CMD_RUC();
959 p
->scb
->rfa_offset
= make16(p
->rfd_first
);
960 p
->scb
->cmd_ruc
= RUC_START
;
961 sun3_attn586(); /* start cmd. */
962 WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
965 static void sun3_82586_timeout(struct net_device
*dev
)
967 struct priv
*p
= (struct priv
*) dev
->priv
;
968 #ifndef NO_NOPCOMMANDS
969 if(p
->scb
->cus
& CU_ACTIVE
) /* COMMAND-UNIT active? */
971 netif_wake_queue(dev
);
973 printk("%s: strange ... timeout with CU active?!?\n",dev
->name
);
974 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
);
976 p
->scb
->cmd_cuc
= CUC_ABORT
;
979 p
->scb
->cbl_offset
= make16(p
->nop_cmds
[p
->nop_point
]);
980 p
->scb
->cmd_cuc
= CUC_START
;
983 dev
->trans_start
= jiffies
;
989 printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev
->name
,p
->scb
->cus
);
990 printk("%s: command-stats: %04x %04x\n",dev
->name
,swab16(p
->xmit_cmds
[0]->cmd_status
),swab16(p
->xmit_cmds
[1]->cmd_status
));
991 printk("%s: check, whether you set the right interrupt number!\n",dev
->name
);
993 sun3_82586_close(dev
);
994 sun3_82586_open(dev
);
996 dev
->trans_start
= jiffies
;
999 /******************************************************
1003 static int sun3_82586_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1006 #ifndef NO_NOPCOMMANDS
1009 struct priv
*p
= (struct priv
*) dev
->priv
;
1011 if(skb
->len
> XMIT_BUFF_SIZE
)
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
);
1017 netif_stop_queue(dev
);
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
);
1028 if (len
< ETH_ZLEN
) {
1029 memset((char *)p
->xmit_cbuffs
[p
->xmit_count
], 0, ETH_ZLEN
);
1032 memcpy((char *)p
->xmit_cbuffs
[p
->xmit_count
],(char *)(skb
->data
),skb
->len
);
1034 #if (NUM_XMIT_BUFFS == 1)
1035 # ifdef NO_NOPCOMMANDS
1038 if(p
->scb
->cus
& CU_ACTIVE
)
1040 printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev
->name
);
1041 printk("%s: stat: %04x %04x\n",dev
->name
,p
->scb
->cus
,swab16(p
->xmit_cmds
[0]->cmd_status
));
1045 p
->xmit_buffs
[0]->size
= swab16(TBD_LAST
| len
);
1048 p
->xmit_cmds
[0]->cmd_status
= 0;
1050 if( (p
->scb
->cus
& CU_STATUS
) == CU_SUSPEND
)
1051 p
->scb
->cmd_cuc
= CUC_RESUME
;
1054 p
->scb
->cbl_offset
= make16(p
->xmit_cmds
[0]);
1055 p
->scb
->cmd_cuc
= CUC_START
;
1059 dev
->trans_start
= jiffies
;
1063 if( (p
->scb
->cus
& CU_ACTIVE
)) /* test it, because CU sometimes doesn't start immediately */
1065 if(p
->xmit_cmds
[0]->cmd_status
)
1068 printk("%s: Can't start transmit-command.\n",dev
->name
);
1071 next_nop
= (p
->nop_point
+ 1) & 0x1;
1072 p
->xmit_buffs
[0]->size
= swab16(TBD_LAST
| len
);
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;
1078 p
->nop_cmds
[p
->nop_point
]->cmd_link
= make16((p
->xmit_cmds
[0]));
1079 dev
->trans_start
= jiffies
;
1080 p
->nop_point
= next_nop
;
1084 p
->xmit_buffs
[p
->xmit_count
]->size
= swab16(TBD_LAST
| len
);
1085 if( (next_nop
= p
->xmit_count
+ 1) == NUM_XMIT_BUFFS
)
1088 p
->xmit_cmds
[p
->xmit_count
]->cmd_status
= 0;
1089 /* linkpointer of xmit-command already points to next nop cmd */
1090 p
->nop_cmds
[next_nop
]->cmd_link
= make16((p
->nop_cmds
[next_nop
]));
1091 p
->nop_cmds
[next_nop
]->cmd_status
= 0;
1093 p
->nop_cmds
[p
->xmit_count
]->cmd_link
= make16((p
->xmit_cmds
[p
->xmit_count
]));
1094 dev
->trans_start
= jiffies
;
1095 p
->xmit_count
= next_nop
;
1098 unsigned long flags
;
1099 local_irq_save(flags
);
1100 if(p
->xmit_count
!= p
->xmit_last
)
1101 netif_wake_queue(dev
);
1103 local_irq_restore(flags
);
1111 /*******************************************
1112 * Someone wanna have the statistics
1115 static struct net_device_stats
*sun3_82586_get_stats(struct net_device
*dev
)
1117 struct priv
*p
= (struct priv
*) dev
->priv
;
1118 unsigned short crc
,aln
,rsc
,ovrn
;
1120 crc
= swab16(p
->scb
->crc_errs
); /* get error-statistic from the ni82586 */
1121 p
->scb
->crc_errs
= 0;
1122 aln
= swab16(p
->scb
->aln_errs
);
1123 p
->scb
->aln_errs
= 0;
1124 rsc
= swab16(p
->scb
->rsc_errs
);
1125 p
->scb
->rsc_errs
= 0;
1126 ovrn
= swab16(p
->scb
->ovrn_errs
);
1127 p
->scb
->ovrn_errs
= 0;
1129 p
->stats
.rx_crc_errors
+= crc
;
1130 p
->stats
.rx_fifo_errors
+= ovrn
;
1131 p
->stats
.rx_frame_errors
+= aln
;
1132 p
->stats
.rx_dropped
+= rsc
;
1137 /********************************************************
1141 static void set_multicast_list(struct net_device
*dev
)
1143 netif_stop_queue(dev
);
1149 netif_wake_queue(dev
);
1153 #error This code is not currently supported as a module
1154 static struct net_device
*dev_sun3_82586
;
1156 int init_module(void)
1158 dev_sun3_82586
= sun3_82586_probe(-1);
1159 if (IS_ERR(dev_sun3_82586
))
1160 return PTR_ERR(dev_sun3_82586
);
1164 void cleanup_module(void)
1166 unsigned long ioaddr
= dev_sun3_82586
->base_addr
;
1167 unregister_netdev(dev_sun3_82586
);
1168 release_region(ioaddr
, SUN3_82586_TOTAL_SIZE
);
1169 iounmap((void *)ioaddr
);
1170 free_netdev(dev_sun3_82586
);
1176 * DUMP .. we expect a not running CMD unit and enough space
1178 void sun3_82586_dump(struct net_device
*dev
,void *ptr
)
1180 struct priv
*p
= (struct priv
*) dev
->priv
;
1181 struct dump_cmd_struct
*dump_cmd
= (struct dump_cmd_struct
*) ptr
;
1184 p
->scb
->cmd_cuc
= CUC_ABORT
;
1187 WAIT_4_SCB_CMD_RUC();
1189 dump_cmd
->cmd_status
= 0;
1190 dump_cmd
->cmd_cmd
= CMD_DUMP
| CMD_LAST
;
1191 dump_cmd
->dump_offset
= make16((dump_cmd
+ 1));
1192 dump_cmd
->cmd_link
= 0xffff;
1194 p
->scb
->cbl_offset
= make16(dump_cmd
);
1195 p
->scb
->cmd_cuc
= CUC_START
;
1197 WAIT_4_STAT_COMPL(dump_cmd
);
1199 if( (dump_cmd
->cmd_status
& (STAT_COMPL
|STAT_OK
)) != (STAT_COMPL
|STAT_OK
) )
1200 printk("%s: Can't get dump information.\n",dev
->name
);
1202 for(i
=0;i
<170;i
++) {
1203 printk("%02x ",(int) ((unsigned char *) (dump_cmd
+ 1))[i
]);
1211 MODULE_LICENSE("GPL");
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