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Commit | Line | Data |
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1da177e4 LT |
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 | * -------------------------- | |
6aa20a22 | 17 | * |
1da177e4 LT |
18 | * Consult ni52.c for further notes from the original driver. |
19 | * | |
6aa20a22 | 20 | * This incarnation currently supports the OBIO version of the i82586 chip |
1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
41 | #include <asm/io.h> | |
42 | #include <asm/idprom.h> | |
43 | #include <asm/machines.h> | |
44 | #include <asm/sun3mmu.h> | |
45 | #include <asm/dvma.h> | |
46 | #include <asm/byteorder.h> | |
47 | ||
48 | #include <linux/netdevice.h> | |
49 | #include <linux/etherdevice.h> | |
50 | #include <linux/skbuff.h> | |
51 | ||
52 | #include "sun3_82586.h" | |
53 | ||
54 | #define DRV_NAME "sun3_82586" | |
55 | ||
56 | #define DEBUG /* debug on */ | |
57 | #define SYSBUSVAL 0 /* 16 Bit */ | |
58 | #define SUN3_82586_TOTAL_SIZE PAGE_SIZE | |
59 | ||
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);} | |
65 | ||
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 ))) | |
69 | ||
70 | /******************* how to calculate the buffers ***************************** | |
71 | ||
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' | |
75 | ||
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; | |
80 | sizeof(nop_cmd) = 8; | |
81 | ||
82 | * if you don't know the driver, better do not change these values: */ | |
83 | ||
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 */ | |
91 | ||
92 | /**************************************************************************/ | |
93 | ||
94 | /* different DELAYs */ | |
95 | #define DELAY(x) mdelay(32 * x); | |
96 | #define DELAY_16(); { udelay(16); } | |
97 | #define DELAY_18(); { udelay(4); } | |
98 | ||
99 | /* wait for command with timeout: */ | |
100 | #define WAIT_4_SCB_CMD() \ | |
101 | { int i; \ | |
102 | for(i=0;i<16384;i++) { \ | |
103 | if(!p->scb->cmd_cuc) break; \ | |
104 | DELAY_18(); \ | |
105 | if(i == 16383) { \ | |
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(); } } } } | |
108 | ||
109 | #define WAIT_4_SCB_CMD_RUC() { int i; \ | |
110 | for(i=0;i<16384;i++) { \ | |
111 | if(!p->scb->cmd_ruc) break; \ | |
112 | DELAY_18(); \ | |
113 | if(i == 16383) { \ | |
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(); } } } } | |
116 | ||
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(); } } | |
121 | ||
122 | static int sun3_82586_probe1(struct net_device *dev,int ioaddr); | |
7d12e780 | 123 | static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id); |
1da177e4 LT |
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); | |
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 | struct net_device_stats stats; | |
147 | unsigned long base; | |
148 | char *memtop; | |
149 | long int lock; | |
150 | int reseted; | |
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]; | |
159 | #else | |
160 | volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS]; | |
161 | #endif | |
162 | volatile int nop_point,num_recv_buffs; | |
163 | volatile char *xmit_cbuffs[NUM_XMIT_BUFFS]; | |
164 | volatile int xmit_count,xmit_last; | |
165 | }; | |
166 | ||
167 | /********************************************** | |
168 | * close device | |
169 | */ | |
170 | static int sun3_82586_close(struct net_device *dev) | |
171 | { | |
172 | free_irq(dev->irq, dev); | |
173 | ||
174 | sun3_reset586(); /* the hard way to stop the receiver */ | |
175 | ||
176 | netif_stop_queue(dev); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | /********************************************** | |
182 | * open device | |
183 | */ | |
184 | static int sun3_82586_open(struct net_device *dev) | |
185 | { | |
186 | int ret; | |
187 | ||
188 | sun3_disint(); | |
189 | alloc586(dev); | |
190 | init586(dev); | |
191 | startrecv586(dev); | |
192 | sun3_enaint(); | |
193 | ||
194 | ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev); | |
195 | if (ret) | |
196 | { | |
197 | sun3_reset586(); | |
198 | return ret; | |
199 | } | |
200 | ||
201 | netif_start_queue(dev); | |
202 | ||
203 | return 0; /* most done by init */ | |
204 | } | |
205 | ||
206 | /********************************************** | |
207 | * Check to see if there's an 82586 out there. | |
208 | */ | |
209 | static int check586(struct net_device *dev,char *where,unsigned size) | |
210 | { | |
211 | struct priv pb; | |
b74ca3a8 | 212 | struct priv *p = &pb; |
1da177e4 LT |
213 | char *iscp_addr; |
214 | int i; | |
215 | ||
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]) | |
222 | return 0; | |
223 | p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */ | |
224 | if(p->scp->sysbus != SYSBUSVAL) | |
225 | return 0; | |
226 | ||
227 | iscp_addr = (char *)dvma_btov((unsigned long)where); | |
6aa20a22 | 228 | |
1da177e4 LT |
229 | p->iscp = (struct iscp_struct *) iscp_addr; |
230 | memset((char *)p->iscp,0, sizeof(struct iscp_struct)); | |
231 | ||
232 | p->scp->iscp = make24(p->iscp); | |
233 | p->iscp->busy = 1; | |
234 | ||
235 | sun3_reset586(); | |
236 | sun3_attn586(); | |
237 | DELAY(1); /* wait a while... */ | |
6aa20a22 | 238 | |
1da177e4 LT |
239 | if(p->iscp->busy) /* i82586 clears 'busy' after successful init */ |
240 | return 0; | |
241 | ||
242 | return 1; | |
243 | } | |
244 | ||
245 | /****************************************************************** | |
246 | * set iscp at the right place, called by sun3_82586_probe1 and open586. | |
247 | */ | |
248 | static void alloc586(struct net_device *dev) | |
249 | { | |
8f15ea42 | 250 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
251 | |
252 | sun3_reset586(); | |
253 | DELAY(1); | |
254 | ||
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)); | |
258 | ||
259 | memset((char *) p->iscp,0,sizeof(struct iscp_struct)); | |
260 | memset((char *) p->scp ,0,sizeof(struct scp_struct)); | |
261 | ||
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)); | |
266 | ||
267 | p->iscp->busy = 1; | |
268 | sun3_reset586(); | |
269 | sun3_attn586(); | |
270 | ||
271 | DELAY(1); | |
272 | ||
273 | if(p->iscp->busy) | |
274 | printk("%s: Init-Problems (alloc).\n",dev->name); | |
275 | ||
276 | p->reseted = 0; | |
277 | ||
278 | memset((char *)p->scb,0,sizeof(struct scb_struct)); | |
279 | } | |
280 | ||
281 | struct net_device * __init sun3_82586_probe(int unit) | |
282 | { | |
283 | struct net_device *dev; | |
284 | unsigned long ioaddr; | |
285 | static int found = 0; | |
286 | int err = -ENOMEM; | |
6aa20a22 | 287 | |
1da177e4 LT |
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 */ | |
293 | break; | |
294 | ||
295 | default: | |
296 | return ERR_PTR(-ENODEV); | |
297 | } | |
298 | ||
299 | if (found) | |
300 | return ERR_PTR(-ENODEV); | |
6aa20a22 | 301 | |
1da177e4 LT |
302 | ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE); |
303 | if (!ioaddr) | |
304 | return ERR_PTR(-ENOMEM); | |
305 | found = 1; | |
6aa20a22 | 306 | |
1da177e4 LT |
307 | dev = alloc_etherdev(sizeof(struct priv)); |
308 | if (!dev) | |
309 | goto out; | |
310 | if (unit >= 0) { | |
311 | sprintf(dev->name, "eth%d", unit); | |
312 | netdev_boot_setup_check(dev); | |
313 | } | |
1da177e4 LT |
314 | |
315 | dev->irq = IE_IRQ; | |
316 | dev->base_addr = ioaddr; | |
317 | err = sun3_82586_probe1(dev, ioaddr); | |
318 | if (err) | |
319 | goto out1; | |
320 | err = register_netdev(dev); | |
321 | if (err) | |
322 | goto out2; | |
323 | return dev; | |
324 | ||
325 | out2: | |
326 | release_region(ioaddr, SUN3_82586_TOTAL_SIZE); | |
327 | out1: | |
328 | free_netdev(dev); | |
329 | out: | |
437111ca | 330 | iounmap((void __iomem *)ioaddr); |
1da177e4 LT |
331 | return ERR_PTR(err); |
332 | } | |
333 | ||
334 | static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr) | |
335 | { | |
336 | int i, size, retval; | |
337 | ||
338 | if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME)) | |
339 | return -EBUSY; | |
340 | ||
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]; | |
344 | ||
345 | printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr); | |
346 | ||
347 | /* | |
348 | * check (or search) IO-Memory, 32K | |
349 | */ | |
350 | size = 0x8000; | |
351 | ||
352 | dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000); | |
353 | dev->mem_end = dev->mem_start + size; | |
354 | ||
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); | |
357 | retval = -ENODEV; | |
358 | goto out; | |
359 | } | |
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); | |
362 | retval = -ENODEV; | |
363 | goto out; | |
364 | } | |
365 | ||
8f15ea42 WC |
366 | ((struct priv *)netdev_priv(dev))->memtop = |
367 | (char *)dvma_btov(dev->mem_start); | |
368 | ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0); | |
1da177e4 LT |
369 | alloc586(dev); |
370 | ||
371 | /* set number of receive-buffs according to memsize */ | |
372 | if(size == 0x2000) | |
8f15ea42 WC |
373 | ((struct priv *)netdev_priv(dev))->num_recv_buffs = |
374 | NUM_RECV_BUFFS_8; | |
1da177e4 | 375 | else if(size == 0x4000) |
8f15ea42 WC |
376 | ((struct priv *)netdev_priv(dev))->num_recv_buffs = |
377 | NUM_RECV_BUFFS_16; | |
1da177e4 | 378 | else |
8f15ea42 WC |
379 | ((struct priv *)netdev_priv(dev))->num_recv_buffs = |
380 | NUM_RECV_BUFFS_32; | |
1da177e4 LT |
381 | |
382 | printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq); | |
6aa20a22 | 383 | |
1da177e4 LT |
384 | dev->open = sun3_82586_open; |
385 | dev->stop = sun3_82586_close; | |
386 | dev->get_stats = sun3_82586_get_stats; | |
387 | dev->tx_timeout = sun3_82586_timeout; | |
388 | dev->watchdog_timeo = HZ/20; | |
389 | dev->hard_start_xmit = sun3_82586_send_packet; | |
390 | dev->set_multicast_list = set_multicast_list; | |
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 | ||
400 | static int init586(struct net_device *dev) | |
401 | { | |
402 | void *ptr; | |
403 | int i,result=0; | |
8f15ea42 | 404 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
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 dev_mc_list *dmi=dev->mc_list; | |
410 | int num_addrs=dev->mc_count; | |
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); | |
c16d1185 | 432 | cfg_cmd->promisc = 1; |
1da177e4 LT |
433 | } |
434 | } | |
435 | if(dev->flags&IFF_PROMISC) | |
c16d1185 | 436 | cfg_cmd->promisc = 1; |
1da177e4 LT |
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,(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 | */ | |
6aa20a22 | 480 | |
1da177e4 LT |
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 | for(i=0;i<num_addrs;i++,dmi=dmi->next) | |
533 | memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6); | |
534 | ||
535 | p->scb->cbl_offset = make16(mc_cmd); | |
536 | p->scb->cmd_cuc = CUC_START; | |
537 | sun3_attn586(); | |
538 | ||
539 | WAIT_4_STAT_COMPL(mc_cmd); | |
540 | ||
541 | if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) | |
542 | printk("%s: Can't apply multicast-address-list.\n",dev->name); | |
543 | } | |
544 | ||
545 | /* | |
546 | * alloc nop/xmit-cmds | |
547 | */ | |
548 | #if (NUM_XMIT_BUFFS == 1) | |
549 | for(i=0;i<2;i++) | |
550 | { | |
551 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; | |
552 | p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP); | |
553 | p->nop_cmds[i]->cmd_status = 0; | |
554 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); | |
555 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); | |
556 | } | |
557 | #else | |
558 | for(i=0;i<NUM_XMIT_BUFFS;i++) | |
559 | { | |
560 | p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; | |
561 | p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP); | |
562 | p->nop_cmds[i]->cmd_status = 0; | |
563 | p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); | |
564 | ptr = (char *) ptr + sizeof(struct nop_cmd_struct); | |
565 | } | |
566 | #endif | |
567 | ||
568 | ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */ | |
569 | ||
570 | /* | |
571 | * alloc xmit-buffs / init xmit_cmds | |
572 | */ | |
573 | for(i=0;i<NUM_XMIT_BUFFS;i++) | |
574 | { | |
575 | p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/ | |
576 | ptr = (char *) ptr + sizeof(struct transmit_cmd_struct); | |
577 | p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */ | |
578 | ptr = (char *) ptr + XMIT_BUFF_SIZE; | |
579 | p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */ | |
580 | ptr = (char *) ptr + sizeof(struct tbd_struct); | |
581 | if((void *)ptr > (void *)dev->mem_end) | |
582 | { | |
583 | printk("%s: not enough shared-mem for your configuration!\n",dev->name); | |
584 | return 1; | |
585 | } | |
586 | memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct)); | |
587 | memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct)); | |
588 | p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]); | |
589 | p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL); | |
590 | p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT); | |
591 | p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i])); | |
592 | p->xmit_buffs[i]->next = 0xffff; | |
593 | p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i])); | |
594 | } | |
595 | ||
596 | p->xmit_count = 0; | |
597 | p->xmit_last = 0; | |
598 | #ifndef NO_NOPCOMMANDS | |
599 | p->nop_point = 0; | |
600 | #endif | |
601 | ||
602 | /* | |
603 | * 'start transmitter' | |
604 | */ | |
605 | #ifndef NO_NOPCOMMANDS | |
606 | p->scb->cbl_offset = make16(p->nop_cmds[0]); | |
607 | p->scb->cmd_cuc = CUC_START; | |
608 | sun3_attn586(); | |
609 | WAIT_4_SCB_CMD(); | |
610 | #else | |
611 | p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]); | |
612 | p->xmit_cmds[0]->cmd_cmd = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT); | |
613 | #endif | |
614 | ||
615 | /* | |
616 | * ack. interrupts | |
617 | */ | |
618 | p->scb->cmd_cuc = p->scb->cus & STAT_MASK; | |
619 | sun3_attn586(); | |
620 | DELAY_16(); | |
621 | ||
622 | sun3_enaint(); | |
623 | sun3_active(); | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | /****************************************************** | |
629 | * This is a helper routine for sun3_82586_rnr_int() and init586(). | |
630 | * It sets up the Receive Frame Area (RFA). | |
631 | */ | |
632 | ||
633 | static void *alloc_rfa(struct net_device *dev,void *ptr) | |
634 | { | |
635 | volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr; | |
636 | volatile struct rbd_struct *rbd; | |
637 | int i; | |
8f15ea42 | 638 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
639 | |
640 | memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd)); | |
641 | p->rfd_first = rfd; | |
642 | ||
643 | for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) { | |
644 | rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) ); | |
645 | rfd[i].rbd_offset = 0xffff; | |
646 | } | |
647 | rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */ | |
648 | ||
649 | ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) ); | |
650 | ||
651 | rbd = (struct rbd_struct *) ptr; | |
652 | ptr = (void *) (rbd + p->num_recv_buffs); | |
653 | ||
654 | /* clr descriptors */ | |
655 | memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs)); | |
656 | ||
657 | for(i=0;i<p->num_recv_buffs;i++) | |
658 | { | |
659 | rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs)); | |
660 | rbd[i].size = swab16(RECV_BUFF_SIZE); | |
661 | rbd[i].buffer = make24(ptr); | |
662 | ptr = (char *) ptr + RECV_BUFF_SIZE; | |
663 | } | |
664 | ||
665 | p->rfd_top = p->rfd_first; | |
666 | p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); | |
667 | ||
668 | p->scb->rfa_offset = make16(p->rfd_first); | |
669 | p->rfd_first->rbd_offset = make16(rbd); | |
670 | ||
671 | return ptr; | |
672 | } | |
673 | ||
674 | ||
675 | /************************************************** | |
676 | * Interrupt Handler ... | |
677 | */ | |
678 | ||
7d12e780 | 679 | static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id) |
1da177e4 LT |
680 | { |
681 | struct net_device *dev = dev_id; | |
682 | unsigned short stat; | |
683 | int cnt=0; | |
684 | struct priv *p; | |
685 | ||
686 | if (!dev) { | |
687 | printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq); | |
688 | return IRQ_NONE; | |
689 | } | |
8f15ea42 | 690 | p = netdev_priv(dev); |
1da177e4 LT |
691 | |
692 | if(debuglevel > 1) | |
693 | printk("I"); | |
694 | ||
695 | WAIT_4_SCB_CMD(); /* wait for last command */ | |
696 | ||
697 | while((stat=p->scb->cus & STAT_MASK)) | |
698 | { | |
699 | p->scb->cmd_cuc = stat; | |
700 | sun3_attn586(); | |
701 | ||
702 | if(stat & STAT_FR) /* received a frame */ | |
703 | sun3_82586_rcv_int(dev); | |
704 | ||
705 | if(stat & STAT_RNR) /* RU went 'not ready' */ | |
706 | { | |
707 | printk("(R)"); | |
708 | if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */ | |
709 | { | |
710 | WAIT_4_SCB_CMD(); | |
711 | p->scb->cmd_ruc = RUC_RESUME; | |
712 | sun3_attn586(); | |
713 | WAIT_4_SCB_CMD_RUC(); | |
714 | } | |
715 | else | |
716 | { | |
717 | printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus); | |
718 | sun3_82586_rnr_int(dev); | |
719 | } | |
720 | } | |
721 | ||
722 | if(stat & STAT_CX) /* command with I-bit set complete */ | |
723 | sun3_82586_xmt_int(dev); | |
724 | ||
725 | #ifndef NO_NOPCOMMANDS | |
726 | if(stat & STAT_CNA) /* CU went 'not ready' */ | |
727 | { | |
728 | if(netif_running(dev)) | |
729 | printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus); | |
730 | } | |
731 | #endif | |
732 | ||
733 | if(debuglevel > 1) | |
734 | printk("%d",cnt++); | |
735 | ||
736 | WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */ | |
737 | if(p->scb->cmd_cuc) /* timed out? */ | |
738 | { | |
739 | printk("%s: Acknowledge timed out.\n",dev->name); | |
740 | sun3_disint(); | |
741 | break; | |
742 | } | |
743 | } | |
744 | ||
745 | if(debuglevel > 1) | |
746 | printk("i"); | |
747 | return IRQ_HANDLED; | |
748 | } | |
749 | ||
750 | /******************************************************* | |
751 | * receive-interrupt | |
752 | */ | |
753 | ||
754 | static void sun3_82586_rcv_int(struct net_device *dev) | |
755 | { | |
756 | int status,cnt=0; | |
757 | unsigned short totlen; | |
758 | struct sk_buff *skb; | |
759 | struct rbd_struct *rbd; | |
8f15ea42 | 760 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
761 | |
762 | if(debuglevel > 0) | |
763 | printk("R"); | |
764 | ||
765 | for(;(status = p->rfd_top->stat_high) & RFD_COMPL;) | |
766 | { | |
767 | rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset); | |
768 | ||
769 | if(status & RFD_OK) /* frame received without error? */ | |
770 | { | |
771 | if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */ | |
772 | { | |
773 | totlen &= RBD_MASK; /* length of this frame */ | |
774 | rbd->status = 0; | |
775 | skb = (struct sk_buff *) dev_alloc_skb(totlen+2); | |
776 | if(skb != NULL) | |
777 | { | |
1da177e4 LT |
778 | skb_reserve(skb,2); |
779 | skb_put(skb,totlen); | |
8c7b7faa | 780 | skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen); |
1da177e4 LT |
781 | skb->protocol=eth_type_trans(skb,dev); |
782 | netif_rx(skb); | |
783 | p->stats.rx_packets++; | |
784 | } | |
785 | else | |
786 | p->stats.rx_dropped++; | |
787 | } | |
788 | else | |
789 | { | |
790 | int rstat; | |
791 | /* free all RBD's until RBD_LAST is set */ | |
792 | totlen = 0; | |
793 | while(!((rstat=swab16(rbd->status)) & RBD_LAST)) | |
794 | { | |
795 | totlen += rstat & RBD_MASK; | |
796 | if(!rstat) | |
797 | { | |
798 | printk("%s: Whoops .. no end mark in RBD list\n",dev->name); | |
799 | break; | |
800 | } | |
801 | rbd->status = 0; | |
802 | rbd = (struct rbd_struct *) make32(rbd->next); | |
803 | } | |
804 | totlen += rstat & RBD_MASK; | |
805 | rbd->status = 0; | |
806 | printk("%s: received oversized frame! length: %d\n",dev->name,totlen); | |
807 | p->stats.rx_dropped++; | |
808 | } | |
809 | } | |
810 | else /* frame !(ok), only with 'save-bad-frames' */ | |
811 | { | |
812 | printk("%s: oops! rfd-error-status: %04x\n",dev->name,status); | |
813 | p->stats.rx_errors++; | |
814 | } | |
815 | p->rfd_top->stat_high = 0; | |
816 | p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */ | |
817 | p->rfd_top->rbd_offset = 0xffff; | |
818 | p->rfd_last->last = 0; /* delete RFD_SUSP */ | |
819 | p->rfd_last = p->rfd_top; | |
820 | p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */ | |
821 | p->scb->rfa_offset = make16(p->rfd_top); | |
822 | ||
823 | if(debuglevel > 0) | |
824 | printk("%d",cnt++); | |
825 | } | |
826 | ||
827 | if(automatic_resume) | |
828 | { | |
829 | WAIT_4_SCB_CMD(); | |
830 | p->scb->cmd_ruc = RUC_RESUME; | |
831 | sun3_attn586(); | |
832 | WAIT_4_SCB_CMD_RUC(); | |
833 | } | |
834 | ||
835 | #ifdef WAIT_4_BUSY | |
836 | { | |
837 | int i; | |
838 | for(i=0;i<1024;i++) | |
839 | { | |
840 | if(p->rfd_top->status) | |
841 | break; | |
842 | DELAY_16(); | |
843 | if(i == 1023) | |
844 | printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name); | |
845 | } | |
846 | } | |
847 | #endif | |
848 | ||
849 | #if 0 | |
850 | if(!at_least_one) | |
851 | { | |
852 | int i; | |
853 | volatile struct rfd_struct *rfds=p->rfd_top; | |
854 | volatile struct rbd_struct *rbds; | |
855 | printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least); | |
856 | for(i=0;i< (p->num_recv_buffs+4);i++) | |
857 | { | |
858 | rbds = (struct rbd_struct *) make32(rfds->rbd_offset); | |
859 | printk("%04x:%04x ",rfds->status,rbds->status); | |
860 | rfds = (struct rfd_struct *) make32(rfds->next); | |
861 | } | |
862 | printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status); | |
863 | 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); | |
864 | } | |
865 | old_at_least = at_least_one; | |
866 | #endif | |
867 | ||
868 | if(debuglevel > 0) | |
869 | printk("r"); | |
870 | } | |
871 | ||
872 | /********************************************************** | |
873 | * handle 'Receiver went not ready'. | |
874 | */ | |
875 | ||
876 | static void sun3_82586_rnr_int(struct net_device *dev) | |
877 | { | |
8f15ea42 | 878 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
879 | |
880 | p->stats.rx_errors++; | |
881 | ||
882 | WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ | |
883 | p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */ | |
884 | sun3_attn586(); | |
885 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */ | |
886 | ||
887 | alloc_rfa(dev,(char *)p->rfd_first); | |
888 | /* maybe add a check here, before restarting the RU */ | |
889 | startrecv586(dev); /* restart RU */ | |
890 | ||
891 | printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus); | |
892 | ||
893 | } | |
894 | ||
895 | /********************************************************** | |
896 | * handle xmit - interrupt | |
897 | */ | |
898 | ||
899 | static void sun3_82586_xmt_int(struct net_device *dev) | |
900 | { | |
901 | int status; | |
8f15ea42 | 902 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
903 | |
904 | if(debuglevel > 0) | |
905 | printk("X"); | |
906 | ||
907 | status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status); | |
908 | if(!(status & STAT_COMPL)) | |
909 | printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name); | |
910 | ||
911 | if(status & STAT_OK) | |
912 | { | |
913 | p->stats.tx_packets++; | |
914 | p->stats.collisions += (status & TCMD_MAXCOLLMASK); | |
915 | } | |
916 | else | |
917 | { | |
918 | p->stats.tx_errors++; | |
919 | if(status & TCMD_LATECOLL) { | |
920 | printk("%s: late collision detected.\n",dev->name); | |
921 | p->stats.collisions++; | |
922 | } | |
923 | else if(status & TCMD_NOCARRIER) { | |
924 | p->stats.tx_carrier_errors++; | |
925 | printk("%s: no carrier detected.\n",dev->name); | |
926 | } | |
927 | else if(status & TCMD_LOSTCTS) | |
928 | printk("%s: loss of CTS detected.\n",dev->name); | |
929 | else if(status & TCMD_UNDERRUN) { | |
930 | p->stats.tx_fifo_errors++; | |
931 | printk("%s: DMA underrun detected.\n",dev->name); | |
932 | } | |
933 | else if(status & TCMD_MAXCOLL) { | |
934 | printk("%s: Max. collisions exceeded.\n",dev->name); | |
935 | p->stats.collisions += 16; | |
936 | } | |
937 | } | |
938 | ||
939 | #if (NUM_XMIT_BUFFS > 1) | |
940 | if( (++p->xmit_last) == NUM_XMIT_BUFFS) | |
941 | p->xmit_last = 0; | |
942 | #endif | |
943 | netif_wake_queue(dev); | |
944 | } | |
945 | ||
946 | /*********************************************************** | |
947 | * (re)start the receiver | |
948 | */ | |
949 | ||
950 | static void startrecv586(struct net_device *dev) | |
951 | { | |
8f15ea42 | 952 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
953 | |
954 | WAIT_4_SCB_CMD(); | |
955 | WAIT_4_SCB_CMD_RUC(); | |
956 | p->scb->rfa_offset = make16(p->rfd_first); | |
957 | p->scb->cmd_ruc = RUC_START; | |
958 | sun3_attn586(); /* start cmd. */ | |
959 | WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */ | |
960 | } | |
961 | ||
962 | static void sun3_82586_timeout(struct net_device *dev) | |
963 | { | |
8f15ea42 | 964 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
965 | #ifndef NO_NOPCOMMANDS |
966 | if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */ | |
967 | { | |
968 | netif_wake_queue(dev); | |
969 | #ifdef DEBUG | |
970 | printk("%s: strange ... timeout with CU active?!?\n",dev->name); | |
971 | 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); | |
972 | #endif | |
973 | p->scb->cmd_cuc = CUC_ABORT; | |
974 | sun3_attn586(); | |
975 | WAIT_4_SCB_CMD(); | |
976 | p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]); | |
977 | p->scb->cmd_cuc = CUC_START; | |
978 | sun3_attn586(); | |
979 | WAIT_4_SCB_CMD(); | |
980 | dev->trans_start = jiffies; | |
981 | return 0; | |
982 | } | |
983 | #endif | |
984 | { | |
985 | #ifdef DEBUG | |
986 | printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus); | |
987 | printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status)); | |
988 | printk("%s: check, whether you set the right interrupt number!\n",dev->name); | |
989 | #endif | |
990 | sun3_82586_close(dev); | |
991 | sun3_82586_open(dev); | |
992 | } | |
993 | dev->trans_start = jiffies; | |
994 | } | |
995 | ||
996 | /****************************************************** | |
997 | * send frame | |
998 | */ | |
999 | ||
1000 | static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1001 | { | |
1002 | int len,i; | |
1003 | #ifndef NO_NOPCOMMANDS | |
1004 | int next_nop; | |
1005 | #endif | |
8f15ea42 | 1006 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
1007 | |
1008 | if(skb->len > XMIT_BUFF_SIZE) | |
1009 | { | |
1010 | printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len); | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | netif_stop_queue(dev); | |
1015 | ||
1016 | #if(NUM_XMIT_BUFFS > 1) | |
1017 | if(test_and_set_bit(0,(void *) &p->lock)) { | |
1018 | printk("%s: Queue was locked\n",dev->name); | |
1019 | return 1; | |
1020 | } | |
1021 | else | |
1022 | #endif | |
1023 | { | |
1024 | len = skb->len; | |
1025 | if (len < ETH_ZLEN) { | |
cfa08bb5 GU |
1026 | memset((void *)p->xmit_cbuffs[p->xmit_count], 0, |
1027 | ETH_ZLEN); | |
1da177e4 LT |
1028 | len = ETH_ZLEN; |
1029 | } | |
cfa08bb5 | 1030 | skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len); |
1da177e4 LT |
1031 | |
1032 | #if (NUM_XMIT_BUFFS == 1) | |
1033 | # ifdef NO_NOPCOMMANDS | |
1034 | ||
1035 | #ifdef DEBUG | |
1036 | if(p->scb->cus & CU_ACTIVE) | |
1037 | { | |
1038 | printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name); | |
1039 | printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status)); | |
1040 | } | |
1041 | #endif | |
1042 | ||
1043 | p->xmit_buffs[0]->size = swab16(TBD_LAST | len); | |
1044 | for(i=0;i<16;i++) | |
1045 | { | |
1046 | p->xmit_cmds[0]->cmd_status = 0; | |
1047 | WAIT_4_SCB_CMD(); | |
1048 | if( (p->scb->cus & CU_STATUS) == CU_SUSPEND) | |
1049 | p->scb->cmd_cuc = CUC_RESUME; | |
1050 | else | |
1051 | { | |
1052 | p->scb->cbl_offset = make16(p->xmit_cmds[0]); | |
1053 | p->scb->cmd_cuc = CUC_START; | |
1054 | } | |
1055 | ||
1056 | sun3_attn586(); | |
1057 | dev->trans_start = jiffies; | |
1058 | if(!i) | |
1059 | dev_kfree_skb(skb); | |
1060 | WAIT_4_SCB_CMD(); | |
1061 | if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */ | |
1062 | break; | |
1063 | if(p->xmit_cmds[0]->cmd_status) | |
1064 | break; | |
1065 | if(i==15) | |
1066 | printk("%s: Can't start transmit-command.\n",dev->name); | |
1067 | } | |
1068 | # else | |
1069 | next_nop = (p->nop_point + 1) & 0x1; | |
1070 | p->xmit_buffs[0]->size = swab16(TBD_LAST | len); | |
1071 | ||
1072 | p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link | |
1073 | = make16((p->nop_cmds[next_nop])); | |
1074 | p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0; | |
1075 | ||
1076 | p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0])); | |
1077 | dev->trans_start = jiffies; | |
1078 | p->nop_point = next_nop; | |
1079 | dev_kfree_skb(skb); | |
1080 | # endif | |
1081 | #else | |
1082 | p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len); | |
1083 | if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS ) | |
1084 | next_nop = 0; | |
1085 | ||
1086 | p->xmit_cmds[p->xmit_count]->cmd_status = 0; | |
1087 | /* linkpointer of xmit-command already points to next nop cmd */ | |
1088 | p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop])); | |
1089 | p->nop_cmds[next_nop]->cmd_status = 0; | |
1090 | ||
1091 | p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count])); | |
1092 | dev->trans_start = jiffies; | |
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 0; | |
1107 | } | |
1108 | ||
1109 | /******************************************* | |
1110 | * Someone wanna have the statistics | |
1111 | */ | |
1112 | ||
1113 | static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev) | |
1114 | { | |
8f15ea42 | 1115 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
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 | p->stats.rx_crc_errors += crc; | |
1128 | p->stats.rx_fifo_errors += ovrn; | |
1129 | p->stats.rx_frame_errors += aln; | |
1130 | p->stats.rx_dropped += rsc; | |
1131 | ||
1132 | return &p->stats; | |
1133 | } | |
1134 | ||
1135 | /******************************************************** | |
1136 | * Set MC list .. | |
1137 | */ | |
1138 | ||
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 | #ifdef MODULE | |
1151 | #error This code is not currently supported as a module | |
1152 | static struct net_device *dev_sun3_82586; | |
1153 | ||
1154 | int init_module(void) | |
1155 | { | |
1156 | dev_sun3_82586 = sun3_82586_probe(-1); | |
1157 | if (IS_ERR(dev_sun3_82586)) | |
1158 | return PTR_ERR(dev_sun3_82586); | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | void cleanup_module(void) | |
1163 | { | |
1164 | unsigned long ioaddr = dev_sun3_82586->base_addr; | |
1165 | unregister_netdev(dev_sun3_82586); | |
1166 | release_region(ioaddr, SUN3_82586_TOTAL_SIZE); | |
1167 | iounmap((void *)ioaddr); | |
1168 | free_netdev(dev_sun3_82586); | |
1169 | } | |
1170 | #endif /* MODULE */ | |
1171 | ||
1172 | #if 0 | |
1173 | /* | |
1174 | * DUMP .. we expect a not running CMD unit and enough space | |
1175 | */ | |
1176 | void sun3_82586_dump(struct net_device *dev,void *ptr) | |
1177 | { | |
8f15ea42 | 1178 | struct priv *p = netdev_priv(dev); |
1da177e4 LT |
1179 | struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr; |
1180 | int i; | |
1181 | ||
1182 | p->scb->cmd_cuc = CUC_ABORT; | |
1183 | sun3_attn586(); | |
1184 | WAIT_4_SCB_CMD(); | |
1185 | WAIT_4_SCB_CMD_RUC(); | |
1186 | ||
1187 | dump_cmd->cmd_status = 0; | |
1188 | dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST; | |
1189 | dump_cmd->dump_offset = make16((dump_cmd + 1)); | |
1190 | dump_cmd->cmd_link = 0xffff; | |
1191 | ||
1192 | p->scb->cbl_offset = make16(dump_cmd); | |
1193 | p->scb->cmd_cuc = CUC_START; | |
1194 | sun3_attn586(); | |
1195 | WAIT_4_STAT_COMPL(dump_cmd); | |
1196 | ||
1197 | if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) | |
1198 | printk("%s: Can't get dump information.\n",dev->name); | |
1199 | ||
1200 | for(i=0;i<170;i++) { | |
1201 | printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]); | |
1202 | if(i % 24 == 23) | |
1203 | printk("\n"); | |
1204 | } | |
1205 | printk("\n"); | |
1206 | } | |
1207 | #endif | |
1208 | ||
1209 | MODULE_LICENSE("GPL"); |