Commit | Line | Data |
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93b2b8c5 BJ |
1 | #include "ne.h" |
2 | #if NNE > 0 | |
d0d290ad | 3 | /*- |
93b2b8c5 | 4 | * NE2000 Ethernet driver |
d0d290ad WN |
5 | * Copyright (C) 1990,91 W. Jolitz |
6 | * Copyright (c) 1990 The Regents of the University of California. | |
7 | * All rights reserved. | |
8 | * | |
9 | * %sccs.include.redist.c% | |
10 | * | |
187497c9 | 11 | * @(#)if_ne.c 7.2 (Berkeley) %G% |
93b2b8c5 BJ |
12 | * |
13 | * Parts inspired from Tim Tucker's if_wd driver for the wd8003, | |
14 | * insight on the ne2000 gained from Robert Clements PC/FTP driver. | |
15 | */ | |
16 | ||
17 | #include "param.h" | |
18 | #include "systm.h" | |
19 | #include "mbuf.h" | |
20 | #include "buf.h" | |
21 | #include "protosw.h" | |
22 | #include "socket.h" | |
23 | #include "ioctl.h" | |
24 | #include "errno.h" | |
25 | #include "syslog.h" | |
26 | ||
d0d290ad WN |
27 | #include "net/if.h" |
28 | #include "net/netisr.h" | |
29 | #include "net/route.h" | |
93b2b8c5 BJ |
30 | |
31 | #ifdef INET | |
d0d290ad WN |
32 | #include "netinet/in.h" |
33 | #include "netinet/in_systm.h" | |
34 | #include "netinet/in_var.h" | |
35 | #include "netinet/ip.h" | |
36 | #include "netinet/if_ether.h" | |
93b2b8c5 BJ |
37 | #endif |
38 | ||
39 | #ifdef NS | |
d0d290ad WN |
40 | #include "netns/ns.h" |
41 | #include "netns/ns_if.h" | |
93b2b8c5 BJ |
42 | #endif |
43 | ||
d0d290ad WN |
44 | #include "i386/isa/isa_device.h" |
45 | #include "i386/isa/if_nereg.h" | |
46 | #include "i386/isa/icu.h" | |
93b2b8c5 BJ |
47 | |
48 | int neprobe(), neattach(), neintr(); | |
d0d290ad | 49 | int nestart(),neinit(), ether_output(), neioctl(); |
93b2b8c5 | 50 | |
c6b0f337 | 51 | struct isa_driver nedriver = { |
93b2b8c5 BJ |
52 | neprobe, neattach, "ne", |
53 | }; | |
54 | ||
93b2b8c5 BJ |
55 | struct mbuf *neget(); |
56 | ||
57 | /* | |
58 | * Ethernet software status per interface. | |
59 | * | |
60 | * Each interface is referenced by a network interface structure, | |
61 | * ns_if, which the routing code uses to locate the interface. | |
62 | * This structure contains the output queue for the interface, its address, ... | |
63 | */ | |
64 | struct ne_softc { | |
65 | struct arpcom ns_ac; /* Ethernet common part */ | |
66 | #define ns_if ns_ac.ac_if /* network-visible interface */ | |
67 | #define ns_addr ns_ac.ac_enaddr /* hardware Ethernet address */ | |
68 | int ns_flags; | |
69 | #define DSF_LOCK 1 /* block re-entering enstart */ | |
70 | int ns_oactive ; | |
71 | int ns_mask ; | |
72 | int ns_ba; /* byte addr in buffer ram of inc pkt */ | |
73 | int ns_cur; /* current page being filled */ | |
74 | struct prhdr ns_ph; /* hardware header of incoming packet*/ | |
75 | struct ether_header ns_eh; /* header of incoming packet */ | |
76 | u_char ns_pb[2048 /*ETHERMTU+sizeof(long)*/]; | |
77 | } ne_softc[NNE] ; | |
187497c9 | 78 | #define ENBUFSIZE (sizeof(struct ether_header) + ETHERMTU + 2 + ETHER_MIN_LEN) |
93b2b8c5 BJ |
79 | |
80 | int nec; | |
81 | ||
82 | u_short boarddata[16]; | |
83 | ||
84 | neprobe(dvp) | |
c6b0f337 | 85 | struct isa_device *dvp; |
93b2b8c5 BJ |
86 | { |
87 | int val,i,s; | |
88 | register struct ne_softc *ns = &ne_softc[0]; | |
89 | ||
90 | #ifdef lint | |
91 | neintr(0); | |
92 | #endif | |
93 | ||
c6b0f337 | 94 | nec = dvp->id_iobase; |
93b2b8c5 BJ |
95 | s = splimp(); |
96 | ||
187497c9 | 97 | /* Reset the bastard */ |
93b2b8c5 BJ |
98 | val = inb(nec+ne_reset); |
99 | DELAY(2000000); | |
100 | outb(nec+ne_reset,val); | |
101 | ||
102 | outb(nec+ds_cmd, DSCM_STOP|DSCM_NODMA); | |
c6b0f337 BJ |
103 | |
104 | i = 1000000; | |
d0d290ad | 105 | while ((inb(nec+ds0_isr)&DSIS_RESET) == 0 && i-- > 0); |
c6b0f337 BJ |
106 | if (i < 0) return (0); |
107 | ||
93b2b8c5 BJ |
108 | outb(nec+ds0_isr, 0xff); |
109 | ||
110 | /* Word Transfers, Burst Mode Select, Fifo at 8 bytes */ | |
111 | outb(nec+ds0_dcr, DSDC_WTS|DSDC_BMS|DSDC_FT1); | |
112 | ||
113 | outb(nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP); | |
c6b0f337 BJ |
114 | DELAY(10000); |
115 | ||
187497c9 | 116 | /* Check cmd reg and fail if not right */ |
c6b0f337 BJ |
117 | if ((i=inb(nec+ds_cmd)) != (DSCM_NODMA|DSCM_PG0|DSCM_STOP)) |
118 | return(0); | |
119 | ||
93b2b8c5 BJ |
120 | outb(nec+ds0_tcr, 0); |
121 | outb(nec+ds0_rcr, DSRC_MON); | |
122 | outb(nec+ds0_pstart, RBUF/DS_PGSIZE); | |
123 | outb(nec+ds0_pstop, RBUFEND/DS_PGSIZE); | |
124 | outb(nec+ds0_bnry, RBUFEND/DS_PGSIZE); | |
125 | outb(nec+ds0_imr, 0); | |
126 | outb(nec+ds0_isr, 0); | |
127 | outb(nec+ds_cmd, DSCM_NODMA|DSCM_PG1|DSCM_STOP); | |
128 | outb(nec+ds1_curr, RBUF/DS_PGSIZE); | |
129 | outb(nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP); | |
187497c9 | 130 | |
c6b0f337 | 131 | #ifdef NEDEBUG |
187497c9 WN |
132 | #define PAT(n) (0xa55a + 37*(n)) |
133 | #define RCON 37 | |
134 | { int i, rom, pat; | |
135 | ||
136 | rom=1; | |
137 | printf("ne ram "); | |
138 | ||
139 | for (i = 0; i < 0xfff0; i+=4) { | |
140 | pat = PAT(i); | |
141 | neput(&pat,i,4); | |
142 | nefetch(&pat,i,4); | |
143 | if (pat == PAT(i)) { | |
144 | if (rom) { | |
145 | rom=0; | |
146 | printf(" %x", i); | |
147 | } | |
148 | } else { | |
149 | if (!rom) { | |
150 | rom=1; | |
151 | printf("..%x ", i); | |
152 | } | |
153 | } | |
154 | pat=0; | |
155 | neput(&pat,i,4); | |
93b2b8c5 | 156 | } |
187497c9 | 157 | printf("\n"); |
93b2b8c5 | 158 | } |
c6b0f337 | 159 | #endif |
187497c9 WN |
160 | |
161 | /* Extract board address */ | |
162 | nefetch ((caddr_t)boarddata, 0, sizeof(boarddata)); | |
93b2b8c5 | 163 | for(i=0; i < 6; i++) ns->ns_addr[i] = boarddata[i]; |
93b2b8c5 BJ |
164 | splx(s); |
165 | return (1); | |
166 | } | |
167 | ||
187497c9 WN |
168 | /* |
169 | * Fetch from onboard ROM/RAM | |
170 | */ | |
171 | nefetch (up, ad, len) caddr_t up; { | |
93b2b8c5 BJ |
172 | u_char cmd; |
173 | ||
174 | cmd = inb(nec+ds_cmd); | |
175 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START); | |
187497c9 WN |
176 | |
177 | /* Setup remote dma */ | |
93b2b8c5 | 178 | outb (nec+ds0_isr, DSIS_RDC); |
187497c9 WN |
179 | outb (nec+ds0_rbcr0, len); |
180 | outb (nec+ds0_rbcr1, len>>8); | |
181 | outb (nec+ds0_rsar0, ad); | |
182 | outb (nec+ds0_rsar1, ad>>8); | |
183 | ||
184 | /* Execute & extract from card */ | |
93b2b8c5 BJ |
185 | outb (nec+ds_cmd, DSCM_RREAD|DSCM_PG0|DSCM_START); |
186 | insw (nec+ne_data, up, len/2); | |
187497c9 WN |
187 | |
188 | /* Wait till done, then shutdown feature */ | |
189 | while ((inb (nec+ds0_isr) & DSIS_RDC) == 0) ; | |
93b2b8c5 BJ |
190 | outb (nec+ds0_isr, DSIS_RDC); |
191 | outb (nec+ds_cmd, cmd); | |
192 | } | |
193 | ||
187497c9 WN |
194 | /* |
195 | * Put to onboard RAM | |
196 | */ | |
197 | neput (up, ad, len) caddr_t up; { | |
93b2b8c5 BJ |
198 | u_char cmd; |
199 | ||
200 | cmd = inb(nec+ds_cmd); | |
201 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START); | |
187497c9 WN |
202 | |
203 | /* Setup for remote dma */ | |
93b2b8c5 | 204 | outb (nec+ds0_isr, DSIS_RDC); |
187497c9 WN |
205 | if(len&1) len++; /* roundup to words */ |
206 | outb (nec+ds0_rbcr0, len); | |
207 | outb (nec+ds0_rbcr1, len>>8); | |
208 | outb (nec+ds0_rsar0, ad); | |
209 | outb (nec+ds0_rsar1, ad>>8); | |
210 | ||
211 | /* Execute & stuff to card */ | |
93b2b8c5 BJ |
212 | outb (nec+ds_cmd, DSCM_RWRITE|DSCM_PG0|DSCM_START); |
213 | outsw (nec+ne_data, up, len/2); | |
187497c9 WN |
214 | |
215 | /* Wait till done, then shutdown feature */ | |
216 | while ((inb (nec+ds0_isr) & DSIS_RDC) == 0) ; | |
93b2b8c5 BJ |
217 | outb (nec+ds0_isr, DSIS_RDC); |
218 | outb (nec+ds_cmd, cmd); | |
219 | } | |
220 | ||
221 | /* | |
222 | * Reset of interface. | |
223 | */ | |
224 | nereset(unit, uban) | |
225 | int unit, uban; | |
226 | { | |
227 | if (unit >= NNE) | |
228 | return; | |
229 | printf("ne%d: reset\n", unit); | |
230 | ne_softc[unit].ns_flags &= ~DSF_LOCK; | |
231 | neinit(unit); | |
232 | } | |
233 | ||
234 | /* | |
235 | * Interface exists: make available by filling in network interface | |
236 | * record. System will initialize the interface when it is ready | |
237 | * to accept packets. We get the ethernet address here. | |
238 | */ | |
239 | neattach(dvp) | |
c6b0f337 | 240 | struct isa_device *dvp; |
93b2b8c5 | 241 | { |
c6b0f337 | 242 | int unit = dvp->id_unit; |
93b2b8c5 BJ |
243 | register struct ne_softc *ns = &ne_softc[unit]; |
244 | register struct ifnet *ifp = &ns->ns_if; | |
245 | ||
246 | ifp->if_unit = unit; | |
247 | ifp->if_name = nedriver.name ; | |
248 | ifp->if_mtu = ETHERMTU; | |
e243739b | 249 | printf (" ethernet address %s", ether_sprintf(ns->ns_addr)) ; |
d0d290ad | 250 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; |
93b2b8c5 | 251 | ifp->if_init = neinit; |
d0d290ad WN |
252 | ifp->if_output = ether_output; |
253 | ifp->if_start = nestart; | |
93b2b8c5 BJ |
254 | ifp->if_ioctl = neioctl; |
255 | ifp->if_reset = nereset; | |
256 | ifp->if_watchdog = 0; | |
257 | if_attach(ifp); | |
258 | } | |
259 | ||
260 | /* | |
261 | * Initialization of interface; set up initialization block | |
262 | * and transmit/receive descriptor rings. | |
263 | */ | |
264 | neinit(unit) | |
265 | int unit; | |
266 | { | |
267 | register struct ne_softc *ns = &ne_softc[unit]; | |
268 | struct ifnet *ifp = &ns->ns_if; | |
269 | int s; | |
270 | register i; char *cp; | |
271 | ||
272 | if (ifp->if_addrlist == (struct ifaddr *)0) return; | |
273 | if (ifp->if_flags & IFF_RUNNING) return; | |
274 | ||
275 | s = splimp(); | |
276 | ||
277 | /* set physical address on ethernet */ | |
278 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG1|DSCM_STOP); | |
279 | for (i=0 ; i < 6 ; i++) outb(nec+ds1_par0+i,ns->ns_addr[i]); | |
280 | ||
281 | /* clr logical address hash filter for now */ | |
282 | for (i=0 ; i < 8 ; i++) outb(nec+ds1_mar0+i,0xff); | |
283 | ||
284 | /* init regs */ | |
285 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_STOP); | |
286 | outb (nec+ds0_rbcr0, 0); | |
287 | outb (nec+ds0_rbcr1, 0); | |
288 | outb (nec+ds0_imr, 0); | |
289 | outb (nec+ds0_isr, 0xff); | |
187497c9 | 290 | |
93b2b8c5 BJ |
291 | /* Word Transfers, Burst Mode Select, Fifo at 8 bytes */ |
292 | outb(nec+ds0_dcr, DSDC_WTS|DSDC_BMS|DSDC_FT1); | |
293 | outb(nec+ds0_tcr, 0); | |
294 | outb (nec+ds0_rcr, DSRC_MON); | |
295 | outb (nec+ds0_tpsr, 0); | |
296 | outb(nec+ds0_pstart, RBUF/DS_PGSIZE); | |
297 | outb(nec+ds0_pstop, RBUFEND/DS_PGSIZE); | |
c67ce870 | 298 | outb(nec+ds0_bnry, RBUF/DS_PGSIZE); |
93b2b8c5 BJ |
299 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG1|DSCM_STOP); |
300 | outb(nec+ds1_curr, RBUF/DS_PGSIZE); | |
301 | ns->ns_cur = RBUF/DS_PGSIZE; | |
302 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START); | |
303 | outb (nec+ds0_rcr, DSRC_AB); | |
304 | outb(nec+ds0_dcr, DSDC_WTS|DSDC_BMS|DSDC_FT1); | |
305 | outb (nec+ds0_imr, 0xff); | |
306 | ||
307 | ns->ns_if.if_flags |= IFF_RUNNING; | |
308 | ns->ns_oactive = 0; ns->ns_mask = ~0; | |
d0d290ad | 309 | nestart(ifp); |
93b2b8c5 BJ |
310 | splx(s); |
311 | } | |
312 | ||
313 | /* | |
314 | * Setup output on interface. | |
315 | * Get another datagram to send off of the interface queue, | |
316 | * and map it to the interface before starting the output. | |
317 | * called only at splimp or interrupt level. | |
318 | */ | |
d0d290ad WN |
319 | nestart(ifp) |
320 | struct ifnet *ifp; | |
93b2b8c5 | 321 | { |
d0d290ad | 322 | register struct ne_softc *ns = &ne_softc[ifp->if_unit]; |
93b2b8c5 BJ |
323 | struct mbuf *m0, *m; |
324 | int buffer; | |
d0d290ad | 325 | int len = 0, i, total,t; |
93b2b8c5 BJ |
326 | |
327 | /* | |
328 | * The DS8390 has only one transmit buffer, if it is busy we | |
329 | * must wait until the transmit interrupt completes. | |
330 | */ | |
331 | outb(nec+ds_cmd,DSCM_NODMA|DSCM_START); | |
332 | ||
c6b0f337 BJ |
333 | if (ns->ns_flags & DSF_LOCK) |
334 | return; | |
335 | ||
93b2b8c5 BJ |
336 | if (inb(nec+ds_cmd) & DSCM_TRANS) |
337 | return; | |
338 | ||
339 | if ((ns->ns_if.if_flags & IFF_RUNNING) == 0) | |
340 | return; | |
341 | ||
342 | IF_DEQUEUE(&ns->ns_if.if_snd, m); | |
343 | ||
344 | if (m == 0) | |
345 | return; | |
346 | ||
347 | /* | |
348 | * Copy the mbuf chain into the transmit buffer | |
349 | */ | |
350 | ||
c6b0f337 | 351 | ns->ns_flags |= DSF_LOCK; /* prevent entering nestart */ |
93b2b8c5 | 352 | buffer = TBUF; len = i = 0; |
d0d290ad | 353 | t = 0; |
187497c9 | 354 | for (m0 = m; m != 0; m = m->m_next) |
d0d290ad | 355 | t += m->m_len; |
d0d290ad WN |
356 | |
357 | m = m0; | |
358 | total = t; | |
d0d290ad WN |
359 | for (m0 = m; m != 0; ) { |
360 | ||
d0d290ad | 361 | if (m->m_len&1 && t > m->m_len) { |
187497c9 | 362 | neput(mtod(m, caddr_t), buffer, m->m_len - 1); |
d0d290ad WN |
363 | t -= m->m_len - 1; |
364 | buffer += m->m_len - 1; | |
365 | m->m_data += m->m_len - 1; | |
366 | m->m_len = 1; | |
367 | m = m_pullup(m, 2); | |
d0d290ad | 368 | } else { |
187497c9 | 369 | neput(mtod(m, caddr_t), buffer, m->m_len); |
d0d290ad WN |
370 | buffer += m->m_len; |
371 | t -= m->m_len; | |
372 | MFREE(m, m0); | |
373 | m = m0; | |
374 | } | |
93b2b8c5 | 375 | } |
93b2b8c5 BJ |
376 | |
377 | /* | |
378 | * Init transmit length registers, and set transmit start flag. | |
379 | */ | |
380 | ||
d0d290ad | 381 | len = total; |
187497c9 | 382 | if (len < ETHER_MIN_LEN) len = ETHER_MIN_LEN; |
93b2b8c5 BJ |
383 | outb(nec+ds0_tbcr0,len&0xff); |
384 | outb(nec+ds0_tbcr1,(len>>8)&0xff); | |
385 | outb(nec+ds0_tpsr, TBUF/DS_PGSIZE); | |
386 | outb(nec+ds_cmd, DSCM_TRANS|DSCM_NODMA|DSCM_START); | |
387 | } | |
388 | ||
187497c9 | 389 | /* buffer successor/predecessor in ring? */ |
c67ce870 BJ |
390 | #define succ(n) (((n)+1 >= RBUFEND/DS_PGSIZE) ? RBUF/DS_PGSIZE : (n)+1) |
391 | #define pred(n) (((n)-1 < RBUF/DS_PGSIZE) ? RBUFEND/DS_PGSIZE-1 : (n)-1) | |
187497c9 | 392 | |
93b2b8c5 BJ |
393 | /* |
394 | * Controller interrupt. | |
395 | */ | |
d0d290ad | 396 | neintr(unit) |
93b2b8c5 | 397 | { |
d0d290ad | 398 | register struct ne_softc *ns = &ne_softc[unit]; |
93b2b8c5 BJ |
399 | u_char cmd,isr; |
400 | ||
187497c9 | 401 | /* Save cmd, clear interrupt */ |
93b2b8c5 | 402 | cmd = inb (nec+ds_cmd); |
c6b0f337 | 403 | loop: |
93b2b8c5 | 404 | isr = inb (nec+ds0_isr); |
c6b0f337 | 405 | outb(nec+ds_cmd,DSCM_NODMA|DSCM_START); |
c67ce870 | 406 | outb(nec+ds0_isr, isr); |
93b2b8c5 | 407 | |
187497c9 | 408 | /* Receiver error */ |
93b2b8c5 BJ |
409 | if (isr & DSIS_RXE) { |
410 | /* need to read these registers to clear status */ | |
411 | (void) inb(nec+ ds0_rsr); | |
412 | (void) inb(nec+ 0xD); | |
413 | (void) inb(nec + 0xE); | |
414 | (void) inb(nec + 0xF); | |
415 | ns->ns_if.if_ierrors++; | |
416 | } | |
417 | ||
187497c9 | 418 | /* We received something; rummage thru tiny ring buffer */ |
c67ce870 | 419 | if (isr & (DSIS_RX|DSIS_RXE|DSIS_ROVRN)) { |
93b2b8c5 BJ |
420 | u_char pend,lastfree; |
421 | ||
422 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG1); | |
423 | pend = inb(nec+ds1_curr); | |
424 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG0); | |
425 | lastfree = inb(nec+ds0_bnry); | |
187497c9 WN |
426 | |
427 | /* Have we wrapped? */ | |
c67ce870 | 428 | if (lastfree >= RBUFEND/DS_PGSIZE) |
93b2b8c5 | 429 | lastfree = RBUF/DS_PGSIZE; |
c67ce870 BJ |
430 | if (pend < lastfree && ns->ns_cur < pend) |
431 | lastfree = ns->ns_cur; | |
432 | else if (ns->ns_cur > lastfree) | |
433 | lastfree = ns->ns_cur; | |
434 | ||
187497c9 | 435 | /* Something in the buffer? */ |
c67ce870 | 436 | while (pend != lastfree) { |
93b2b8c5 BJ |
437 | u_char nxt; |
438 | ||
187497c9 WN |
439 | /* Extract header from microcephalic board */ |
440 | nefetch(&ns->ns_ph,lastfree*DS_PGSIZE, | |
c67ce870 BJ |
441 | sizeof(ns->ns_ph)); |
442 | ns->ns_ba = lastfree*DS_PGSIZE+sizeof(ns->ns_ph); | |
93b2b8c5 | 443 | |
187497c9 | 444 | /* Incipient paranoia */ |
c6b0f337 | 445 | if (ns->ns_ph.pr_status == DSRS_RPC || |
187497c9 | 446 | /* for dequna's */ |
c6b0f337 | 447 | ns->ns_ph.pr_status == 0x21) |
93b2b8c5 | 448 | nerecv (ns); |
c6b0f337 BJ |
449 | #ifdef NEDEBUG |
450 | else { | |
187497c9 WN |
451 | printf("cur %x pnd %x lfr %x ", |
452 | ns->ns_cur, pend, lastfree); | |
453 | printf("nxt %x len %x ", ns->ns_ph.pr_nxtpg, | |
454 | (ns->ns_ph.pr_sz1<<8)+ ns->ns_ph.pr_sz0); | |
455 | printf("Bogus Sts %x\n", ns->ns_ph.pr_status); | |
c6b0f337 BJ |
456 | } |
457 | #endif | |
93b2b8c5 BJ |
458 | |
459 | nxt = ns->ns_ph.pr_nxtpg ; | |
187497c9 WN |
460 | |
461 | /* Sanity check */ | |
462 | if ( nxt >= RBUF/DS_PGSIZE && nxt <= RBUFEND/DS_PGSIZE | |
463 | && nxt <= pend) | |
93b2b8c5 BJ |
464 | ns->ns_cur = nxt; |
465 | else ns->ns_cur = nxt = pend; | |
187497c9 WN |
466 | |
467 | /* Set the boundaries */ | |
c67ce870 BJ |
468 | lastfree = nxt; |
469 | outb(nec+ds0_bnry, pred(nxt)); | |
470 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG1); | |
c6b0f337 | 471 | pend = inb(nec+ds1_curr); |
c67ce870 | 472 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA|DSCM_PG0); |
187497c9 | 473 | } |
93b2b8c5 | 474 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA); |
93b2b8c5 | 475 | } |
187497c9 WN |
476 | |
477 | /* Transmit error */ | |
93b2b8c5 | 478 | if (isr & DSIS_TXE) { |
c67ce870 | 479 | ns->ns_flags &= ~DSF_LOCK; |
187497c9 | 480 | /* Need to read these registers to clear status */ |
93b2b8c5 BJ |
481 | ns->ns_if.if_collisions += inb(nec+ds0_tbcr0); |
482 | ns->ns_if.if_oerrors++; | |
483 | } | |
187497c9 WN |
484 | |
485 | /* Packet Transmitted */ | |
c6b0f337 | 486 | if (isr & DSIS_TX) { |
c67ce870 | 487 | ns->ns_flags &= ~DSF_LOCK; |
93b2b8c5 | 488 | ++ns->ns_if.if_opackets; |
c67ce870 BJ |
489 | ns->ns_if.if_collisions += inb(nec+ds0_tbcr0); |
490 | } | |
491 | ||
187497c9 | 492 | /* Receiver ovverun? */ |
c67ce870 | 493 | if (isr & DSIS_ROVRN) { |
187497c9 WN |
494 | log(LOG_ERR, "ne%d: error: isr %x\n", ns-ne_softc, isr |
495 | /*, DSIS_BITS*/); | |
c67ce870 BJ |
496 | outb(nec+ds0_rbcr0, 0); |
497 | outb(nec+ds0_rbcr1, 0); | |
498 | outb(nec+ds0_tcr, DSTC_LB0); | |
499 | outb(nec+ds0_rcr, DSRC_MON); | |
500 | outb(nec+ds_cmd, DSCM_START|DSCM_NODMA); | |
501 | outb(nec+ds0_rcr, DSRC_AB); | |
502 | outb(nec+ds0_tcr, 0); | |
93b2b8c5 | 503 | } |
c6b0f337 | 504 | |
187497c9 | 505 | /* Any more to send? */ |
93b2b8c5 | 506 | outb (nec+ds_cmd, DSCM_NODMA|DSCM_PG0|DSCM_START); |
d0d290ad | 507 | nestart(&ns->ns_if); |
c6b0f337 | 508 | outb (nec+ds_cmd, cmd); |
93b2b8c5 | 509 | outb (nec+ds0_imr, 0xff); |
187497c9 WN |
510 | |
511 | /* Still more to do? */ | |
c6b0f337 BJ |
512 | isr = inb (nec+ds0_isr); |
513 | if(isr) goto loop; | |
93b2b8c5 BJ |
514 | } |
515 | ||
516 | /* | |
517 | * Ethernet interface receiver interface. | |
518 | * If input error just drop packet. | |
519 | * Otherwise examine packet to determine type. If can't determine length | |
520 | * from type, then have to drop packet. Othewise decapsulate | |
521 | * packet based on type and pass to type specific higher-level | |
522 | * input routine. | |
523 | */ | |
524 | nerecv(ns) | |
525 | register struct ne_softc *ns; | |
526 | { | |
527 | int len,i; | |
528 | ||
529 | ns->ns_if.if_ipackets++; | |
530 | len = ns->ns_ph.pr_sz0 + (ns->ns_ph.pr_sz1<<8); | |
187497c9 WN |
531 | if(len < ETHER_MIN_LEN || len > ETHER_MAX_LEN) |
532 | return; | |
533 | ||
534 | /* this need not be so torturous - one/two bcopys at most into mbufs */ | |
535 | nefetch(ns->ns_pb, ns->ns_ba, min(len,DS_PGSIZE-sizeof(ns->ns_ph))); | |
536 | if (len > DS_PGSIZE-sizeof(ns->ns_ph)) { | |
93b2b8c5 BJ |
537 | int l = len - (DS_PGSIZE-sizeof(ns->ns_ph)), b ; |
538 | u_char *p = ns->ns_pb + (DS_PGSIZE-sizeof(ns->ns_ph)); | |
539 | ||
93b2b8c5 BJ |
540 | if(++ns->ns_cur > 0x7f) ns->ns_cur = 0x46; |
541 | b = ns->ns_cur*DS_PGSIZE; | |
542 | ||
543 | while (l >= DS_PGSIZE) { | |
187497c9 | 544 | nefetch(p, b, DS_PGSIZE); |
93b2b8c5 | 545 | p += DS_PGSIZE; l -= DS_PGSIZE; |
187497c9 WN |
546 | if(++ns->ns_cur > 0x7f) ns->ns_cur = 0x46; |
547 | b = ns->ns_cur*DS_PGSIZE; | |
93b2b8c5 | 548 | } |
93b2b8c5 | 549 | if (l > 0) |
187497c9 | 550 | nefetch(p, b, l); |
93b2b8c5 | 551 | } |
187497c9 WN |
552 | /* don't forget checksum! */ |
553 | len -= sizeof(struct ether_header) + sizeof(long); | |
93b2b8c5 | 554 | |
93b2b8c5 BJ |
555 | neread(ns,(caddr_t)(ns->ns_pb), len); |
556 | } | |
557 | ||
558 | /* | |
559 | * Pass a packet to the higher levels. | |
560 | * We deal with the trailer protocol here. | |
561 | */ | |
562 | neread(ns, buf, len) | |
563 | register struct ne_softc *ns; | |
564 | char *buf; | |
565 | int len; | |
566 | { | |
567 | register struct ether_header *eh; | |
568 | struct mbuf *m; | |
569 | int off, resid; | |
570 | register struct ifqueue *inq; | |
571 | ||
572 | /* | |
573 | * Deal with trailer protocol: if type is trailer type | |
574 | * get true type from first 16-bit word past data. | |
575 | * Remember that type was trailer by setting off. | |
576 | */ | |
577 | eh = (struct ether_header *)buf; | |
578 | eh->ether_type = ntohs((u_short)eh->ether_type); | |
579 | #define nedataaddr(eh, off, type) ((type)(((caddr_t)((eh)+1)+(off)))) | |
580 | if (eh->ether_type >= ETHERTYPE_TRAIL && | |
581 | eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
582 | off = (eh->ether_type - ETHERTYPE_TRAIL) * 512; | |
583 | if (off >= ETHERMTU) return; /* sanity */ | |
584 | eh->ether_type = ntohs(*nedataaddr(eh, off, u_short *)); | |
585 | resid = ntohs(*(nedataaddr(eh, off+2, u_short *))); | |
586 | if (off + resid > len) return; /* sanity */ | |
587 | len = off + resid; | |
588 | } else off = 0; | |
589 | ||
590 | if (len == 0) return; | |
591 | ||
592 | /* | |
593 | * Pull packet off interface. Off is nonzero if packet | |
594 | * has trailing header; neget will then force this header | |
595 | * information to be at the front, but we still have to drop | |
596 | * the type and length which are at the front of any trailer data. | |
597 | */ | |
598 | m = neget(buf, len, off, &ns->ns_if); | |
599 | if (m == 0) return; | |
600 | ||
d0d290ad | 601 | ether_input(&ns->ns_if, eh, m); |
93b2b8c5 BJ |
602 | } |
603 | ||
604 | /* | |
605 | * Supporting routines | |
606 | */ | |
607 | ||
608 | /* | |
609 | * Pull read data off a interface. | |
610 | * Len is length of data, with local net header stripped. | |
611 | * Off is non-zero if a trailer protocol was used, and | |
612 | * gives the offset of the trailer information. | |
613 | * We copy the trailer information and then all the normal | |
614 | * data into mbufs. When full cluster sized units are present | |
615 | * we copy into clusters. | |
616 | */ | |
617 | struct mbuf * | |
618 | neget(buf, totlen, off0, ifp) | |
619 | caddr_t buf; | |
620 | int totlen, off0; | |
621 | struct ifnet *ifp; | |
622 | { | |
623 | struct mbuf *top, **mp, *m, *p; | |
624 | int off = off0, len; | |
625 | register caddr_t cp = buf; | |
d0d290ad WN |
626 | char *epkt; |
627 | ||
628 | buf += sizeof(struct ether_header); | |
629 | cp = buf; | |
630 | epkt = cp + totlen; | |
631 | ||
632 | ||
633 | if (off) { | |
634 | cp += off + 2 * sizeof(u_short); | |
635 | totlen -= 2 * sizeof(u_short); | |
636 | } | |
637 | ||
638 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
639 | if (m == 0) | |
640 | return (0); | |
641 | m->m_pkthdr.rcvif = ifp; | |
642 | m->m_pkthdr.len = totlen; | |
643 | m->m_len = MHLEN; | |
93b2b8c5 | 644 | |
93b2b8c5 BJ |
645 | top = 0; |
646 | mp = ⊤ | |
647 | while (totlen > 0) { | |
d0d290ad WN |
648 | if (top) { |
649 | MGET(m, M_DONTWAIT, MT_DATA); | |
650 | if (m == 0) { | |
651 | m_freem(top); | |
652 | return (0); | |
653 | } | |
654 | m->m_len = MLEN; | |
655 | } | |
656 | len = min(totlen, epkt - cp); | |
657 | if (len >= MINCLSIZE) { | |
658 | MCLGET(m, M_DONTWAIT); | |
659 | if (m->m_flags & M_EXT) | |
660 | m->m_len = len = min(len, MCLBYTES); | |
93b2b8c5 | 661 | else |
d0d290ad | 662 | len = m->m_len; |
93b2b8c5 | 663 | } else { |
93b2b8c5 | 664 | /* |
d0d290ad | 665 | * Place initial small packet/header at end of mbuf. |
93b2b8c5 | 666 | */ |
d0d290ad WN |
667 | if (len < m->m_len) { |
668 | if (top == 0 && len + max_linkhdr <= m->m_len) | |
669 | m->m_data += max_linkhdr; | |
670 | m->m_len = len; | |
671 | } else | |
672 | len = m->m_len; | |
93b2b8c5 | 673 | } |
d0d290ad WN |
674 | bcopy(cp, mtod(m, caddr_t), (unsigned)len); |
675 | cp += len; | |
93b2b8c5 BJ |
676 | *mp = m; |
677 | mp = &m->m_next; | |
d0d290ad WN |
678 | totlen -= len; |
679 | if (cp == epkt) | |
680 | cp = buf; | |
93b2b8c5 BJ |
681 | } |
682 | return (top); | |
93b2b8c5 BJ |
683 | } |
684 | ||
685 | /* | |
686 | * Process an ioctl request. | |
687 | */ | |
688 | neioctl(ifp, cmd, data) | |
689 | register struct ifnet *ifp; | |
690 | int cmd; | |
691 | caddr_t data; | |
692 | { | |
693 | register struct ifaddr *ifa = (struct ifaddr *)data; | |
694 | struct ne_softc *ns = &ne_softc[ifp->if_unit]; | |
695 | struct ifreq *ifr = (struct ifreq *)data; | |
696 | int s = splimp(), error = 0; | |
697 | ||
698 | ||
699 | switch (cmd) { | |
700 | ||
701 | case SIOCSIFADDR: | |
702 | ifp->if_flags |= IFF_UP; | |
703 | ||
d0d290ad | 704 | switch (ifa->ifa_addr->sa_family) { |
93b2b8c5 BJ |
705 | #ifdef INET |
706 | case AF_INET: | |
707 | neinit(ifp->if_unit); /* before arpwhohas */ | |
708 | ((struct arpcom *)ifp)->ac_ipaddr = | |
709 | IA_SIN(ifa)->sin_addr; | |
710 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
711 | break; | |
712 | #endif | |
713 | #ifdef NS | |
714 | case AF_NS: | |
715 | { | |
716 | register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); | |
717 | ||
718 | if (ns_nullhost(*ina)) | |
719 | ina->x_host = *(union ns_host *)(ns->ns_addr); | |
720 | else { | |
721 | /* | |
722 | * The manual says we can't change the address | |
723 | * while the receiver is armed, | |
724 | * so reset everything | |
725 | */ | |
726 | ifp->if_flags &= ~IFF_RUNNING; | |
727 | bcopy((caddr_t)ina->x_host.c_host, | |
728 | (caddr_t)ns->ns_addr, sizeof(ns->ns_addr)); | |
729 | } | |
730 | neinit(ifp->if_unit); /* does ne_setaddr() */ | |
731 | break; | |
732 | } | |
733 | #endif | |
734 | default: | |
735 | neinit(ifp->if_unit); | |
736 | break; | |
737 | } | |
738 | break; | |
739 | ||
740 | case SIOCSIFFLAGS: | |
741 | if ((ifp->if_flags & IFF_UP) == 0 && | |
742 | ifp->if_flags & IFF_RUNNING) { | |
743 | ifp->if_flags &= ~IFF_RUNNING; | |
744 | outb(nec+ds_cmd,DSCM_STOP|DSCM_NODMA); | |
745 | } else if (ifp->if_flags & IFF_UP && | |
746 | (ifp->if_flags & IFF_RUNNING) == 0) | |
747 | neinit(ifp->if_unit); | |
748 | break; | |
749 | ||
750 | #ifdef notdef | |
751 | case SIOCGHWADDR: | |
752 | bcopy((caddr_t)ns->ns_addr, (caddr_t) &ifr->ifr_data, | |
753 | sizeof(ns->ns_addr)); | |
754 | break; | |
755 | #endif | |
756 | ||
757 | default: | |
758 | error = EINVAL; | |
759 | } | |
760 | splx(s); | |
761 | return (error); | |
762 | } | |
93b2b8c5 | 763 | #endif |