Commit | Line | Data |
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fea301bf | 1 | /* if_enp.c 1.4 86/12/15 */ |
6013a59e SL |
2 | |
3 | #include "enp.h" | |
6013a59e | 4 | #if NENP > 0 |
6013a59e | 5 | /* |
bc2cef1e | 6 | * Modified 3Com Ethernet Controller interface |
6013a59e | 7 | * enp modifications added S. F. Holmgren |
bc2cef1e SL |
8 | * |
9 | * UNTESTED WITH 4.3 | |
6013a59e | 10 | */ |
6013a59e SL |
11 | #include "param.h" |
12 | #include "systm.h" | |
13 | #include "mbuf.h" | |
14 | #include "buf.h" | |
15 | #include "protosw.h" | |
16 | #include "socket.h" | |
17 | #include "vmmac.h" | |
bc2cef1e | 18 | #include "ioctl.h" |
6013a59e | 19 | #include "errno.h" |
bc2cef1e SL |
20 | #include "vmparam.h" |
21 | #include "syslog.h" | |
6013a59e SL |
22 | #include "uio.h" |
23 | ||
24 | #include "../net/if.h" | |
25 | #include "../net/netisr.h" | |
26 | #include "../net/route.h" | |
bc2cef1e | 27 | #ifdef INET |
6013a59e | 28 | #include "../netinet/in.h" |
6013a59e | 29 | #include "../netinet/in_systm.h" |
bc2cef1e | 30 | #include "../netinet/in_var.h" |
6013a59e SL |
31 | #include "../netinet/ip.h" |
32 | #include "../netinet/ip_var.h" | |
33 | #include "../netinet/if_ether.h" | |
bc2cef1e SL |
34 | #endif |
35 | #ifdef NS | |
36 | #include "../netns/ns.h" | |
37 | #include "../netns/ns_if.h" | |
38 | #endif | |
39 | ||
40 | #include "../tahoe/cpu.h" | |
41 | #include "../tahoe/pte.h" | |
42 | #include "../tahoe/mtpr.h" | |
6013a59e SL |
43 | |
44 | #include "../tahoevba/vbavar.h" | |
bc2cef1e | 45 | #include "../tahoeif/if_enpreg.h" |
6013a59e | 46 | |
bc2cef1e SL |
47 | #define ENPVEC 0xc1 |
48 | #define ENPSTART 0xf02000 /* standard enp start addr */ | |
49 | #define ENPUNIT(dev) (minor(dev)) /* for enp ram devices */ | |
6013a59e SL |
50 | |
51 | int enpprobe(), enpattach(), enpintr(); | |
fea301bf | 52 | long enpstd[] = { 0xfff41000, 0xfff61000, 0 }; |
bc2cef1e | 53 | struct vba_device *enpinfo[NENP]; |
6013a59e | 54 | struct vba_driver enpdriver = |
bc2cef1e | 55 | { enpprobe, 0, enpattach, 0, enpstd, "enp", enpinfo, "enp-20", 0 }; |
6013a59e | 56 | |
bc2cef1e | 57 | int enpinit(), enpioctl(), enpreset(), enpoutput(); |
6013a59e SL |
58 | struct mbuf *enpget(); |
59 | ||
6013a59e SL |
60 | /* |
61 | * Ethernet software status per interface. | |
62 | * | |
63 | * Each interface is referenced by a network interface structure, | |
64 | * es_if, which the routing code uses to locate the interface. | |
65 | * This structure contains the output queue for the interface, its address, ... | |
66 | */ | |
bc2cef1e SL |
67 | struct enp_softc { |
68 | struct arpcom es_ac; /* common ethernet structures */ | |
69 | #define es_if es_ac.ac_if | |
70 | #define es_enaddr es_ac.ac_enaddr | |
71 | short es_flags; /* flags for devices */ | |
72 | short es_ivec; /* interrupt vector */ | |
73 | struct pte *es_map; /* map for dual ported memory */ | |
74 | caddr_t es_ram; /* virtual address of mapped memory */ | |
75 | } enp_softc[NENP]; | |
76 | extern struct ifnet loif; | |
77 | ||
78 | enpprobe(reg, vi) | |
79 | caddr_t reg; | |
80 | struct vba_device *vi; | |
6013a59e | 81 | { |
bc2cef1e SL |
82 | register br, cvec; /* must be r12, r11 */ |
83 | register struct enpdevice *addr = (struct enpdevice *)reg; | |
84 | struct enp_softc *es = &enp_softc[vi->ui_unit]; | |
6013a59e | 85 | |
bc2cef1e | 86 | #ifdef lint |
9d61b7ff | 87 | br = 0; cvec = br; br = cvec; |
bc2cef1e SL |
88 | enpintr(0); |
89 | #endif | |
9d61b7ff | 90 | if (badaddr((caddr_t)addr, 2) || badaddr((caddr_t)&addr->enp_ram[0], 2)) |
bc2cef1e SL |
91 | return (0); |
92 | es->es_ivec = --vi->ui_hd->vh_lastiv; | |
93 | addr->enp_state = S_ENPRESET; /* reset by VERSAbus reset */ | |
94 | br = 0x14, cvec = es->es_ivec; /* XXX */ | |
95 | return (sizeof (struct enpdevice)); | |
6013a59e SL |
96 | } |
97 | ||
98 | /* | |
99 | * Interface exists: make available by filling in network interface | |
100 | * record. System will initialize the interface when it is ready | |
101 | * to accept packets. | |
102 | */ | |
bc2cef1e SL |
103 | enpattach(ui) |
104 | register struct vba_device *ui; | |
6013a59e | 105 | { |
bc2cef1e SL |
106 | struct enp_softc *es = &enp_softc[ui->ui_unit]; |
107 | register struct ifnet *ifp = &es->es_if; | |
108 | register struct enpdevice *addr = (struct enpdevice *)ui->ui_addr; | |
6013a59e | 109 | |
bc2cef1e | 110 | ifp->if_unit = ui->ui_unit; |
6013a59e SL |
111 | ifp->if_name = "enp"; |
112 | ifp->if_mtu = ETHERMTU; | |
bc2cef1e SL |
113 | /* |
114 | * Get station's addresses. | |
115 | */ | |
9d61b7ff | 116 | enpcopy((u_char *)&addr->enp_addr.e_baseaddr, es->es_enaddr, |
bc2cef1e SL |
117 | sizeof (es->es_enaddr)); |
118 | printf("enp%d: hardware address %s\n", ui->ui_unit, | |
119 | ether_sprintf(es->es_enaddr)); | |
120 | /* | |
121 | * Allocate and map ram. | |
122 | */ | |
123 | vbmemalloc(128, ((caddr_t)addr)+0x1000, &es->es_map, &es->es_ram); | |
6013a59e SL |
124 | |
125 | ifp->if_init = enpinit; | |
126 | ifp->if_ioctl = enpioctl; | |
127 | ifp->if_output = enpoutput; | |
128 | ifp->if_reset = enpreset; | |
bc2cef1e | 129 | ifp->if_flags = IFF_BROADCAST; |
6013a59e SL |
130 | if_attach(ifp); |
131 | } | |
132 | ||
6013a59e | 133 | /* |
bc2cef1e | 134 | * Reset of interface after "system" reset. |
6013a59e | 135 | */ |
bc2cef1e SL |
136 | enpreset(unit, vban) |
137 | int unit, vban; | |
6013a59e | 138 | { |
bc2cef1e | 139 | register struct vba_device *ui; |
6013a59e | 140 | |
bc2cef1e SL |
141 | if (unit >= NENP || (ui = enpinfo[unit]) == 0 || ui->ui_alive == 0 || |
142 | ui->ui_vbanum != vban) | |
143 | return; | |
144 | printf(" enp%d", unit); | |
6013a59e SL |
145 | enpinit(unit); |
146 | } | |
147 | ||
148 | /* | |
bc2cef1e | 149 | * Initialization of interface; clear recorded pending operations. |
6013a59e | 150 | */ |
bc2cef1e SL |
151 | enpinit(unit) |
152 | int unit; | |
6013a59e | 153 | { |
bc2cef1e SL |
154 | struct enp_softc *es = &enp_softc[unit]; |
155 | register struct vba_device *ui = enpinfo[unit]; | |
156 | struct enpdevice *addr; | |
157 | register struct ifnet *ifp = &es->es_if; | |
158 | int s; | |
6013a59e | 159 | |
bc2cef1e SL |
160 | if (ifp->if_addrlist == (struct ifaddr *)0) |
161 | return; | |
162 | if ((ifp->if_flags & IFF_RUNNING) == 0) { | |
163 | addr = (struct enpdevice *)ui->ui_addr; | |
164 | s = splimp(); | |
165 | RESET_ENP(addr); | |
166 | DELAY(200000); | |
167 | addr->enp_intrvec = es->es_ivec; | |
168 | es->es_if.if_flags |= IFF_RUNNING; | |
169 | splx(s); | |
170 | } | |
6013a59e SL |
171 | } |
172 | ||
6013a59e SL |
173 | /* |
174 | * Ethernet interface interrupt. | |
175 | */ | |
bc2cef1e SL |
176 | enpintr(unit) |
177 | int unit; | |
6013a59e | 178 | { |
bc2cef1e SL |
179 | register struct enpdevice *addr; |
180 | register BCB *bcbp; | |
6013a59e | 181 | |
bc2cef1e | 182 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
9d61b7ff | 183 | #if ENP == 30 |
bc2cef1e | 184 | if (!IS_ENP_INTR(addr)) |
6013a59e | 185 | return; |
bc2cef1e | 186 | ACK_ENP_INTR(addr); |
9d61b7ff SL |
187 | #endif |
188 | while ((bcbp = (BCB *)ringget((RING *)&addr->enp_tohost )) != 0) { | |
189 | (void) enpread(&enp_softc[unit], bcbp); | |
190 | (void) ringput((RING *)&addr->enp_enpfree, bcbp); | |
6013a59e | 191 | } |
6013a59e SL |
192 | } |
193 | ||
194 | /* | |
195 | * Read input packet, examine its packet type, and enqueue it. | |
196 | */ | |
9d61b7ff | 197 | enpread(es, bcbp) |
bc2cef1e SL |
198 | struct enp_softc *es; |
199 | register BCB *bcbp; | |
6013a59e SL |
200 | { |
201 | register struct ether_header *enp; | |
202 | struct mbuf *m; | |
9d61b7ff | 203 | int s, len, off, resid; |
6013a59e SL |
204 | register struct ifqueue *inq; |
205 | ||
206 | es->es_if.if_ipackets++; | |
6013a59e SL |
207 | /* |
208 | * Get input data length. | |
209 | * Get pointer to ethernet header (in input buffer). | |
210 | * Deal with trailer protocol: if type is PUP trailer | |
211 | * get true type from first 16-bit word past data. | |
212 | * Remember that type was trailer by setting off. | |
213 | */ | |
bc2cef1e | 214 | len = bcbp->b_msglen - sizeof (struct ether_header); |
6013a59e | 215 | enp = (struct ether_header *)bcbp->b_addr; |
bc2cef1e SL |
216 | #define enpdataaddr(enp, off, type) \ |
217 | ((type)(((caddr_t)(((char *)enp)+sizeof (struct ether_header))+(off)))) | |
218 | enp->ether_type = ntohs((u_short)enp->ether_type); | |
219 | if (enp->ether_type >= ETHERTYPE_TRAIL && | |
220 | enp->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
221 | off = (enp->ether_type - ETHERTYPE_TRAIL) * 512; | |
222 | if (off >= ETHERMTU) | |
223 | goto setup; | |
224 | enp->ether_type = ntohs(*enpdataaddr(enp, off, u_short *)); | |
225 | resid = ntohs(*(enpdataaddr(enp, off+2, u_short *))); | |
226 | if (off + resid > len) | |
227 | goto setup; | |
6013a59e | 228 | len = off + resid; |
bc2cef1e | 229 | } else |
6013a59e | 230 | off = 0; |
bc2cef1e SL |
231 | if (len == 0) |
232 | goto setup; | |
6013a59e | 233 | |
6013a59e SL |
234 | /* |
235 | * Pull packet off interface. Off is nonzero if packet | |
236 | * has trailing header; enpget will then force this header | |
237 | * information to be at the front, but we still have to drop | |
238 | * the type and length which are at the front of any trailer data. | |
239 | */ | |
bc2cef1e SL |
240 | m = enpget(bcbp->b_addr, len, off, &es->es_if); |
241 | if (m == 0) | |
242 | goto setup; | |
243 | if (off) { | |
244 | struct ifnet *ifp; | |
6013a59e | 245 | |
bc2cef1e | 246 | ifp = *(mtod(m, struct ifnet **)); |
6013a59e SL |
247 | m->m_off += 2 * sizeof (u_short); |
248 | m->m_len -= 2 * sizeof (u_short); | |
bc2cef1e | 249 | *(mtod(m, struct ifnet **)) = ifp; |
6013a59e | 250 | } |
bc2cef1e | 251 | switch (enp->ether_type) { |
6013a59e | 252 | |
6013a59e | 253 | #ifdef INET |
bc2cef1e | 254 | case ETHERTYPE_IP: |
6013a59e SL |
255 | schednetisr(NETISR_IP); |
256 | inq = &ipintrq; | |
257 | break; | |
bc2cef1e SL |
258 | #endif |
259 | case ETHERTYPE_ARP: | |
6013a59e | 260 | arpinput(&es->es_ac, m); |
bc2cef1e SL |
261 | goto setup; |
262 | ||
263 | #ifdef NS | |
264 | case ETHERTYPE_NS: | |
265 | schednetisr(NETISR_NS); | |
266 | inq = &nsintrq; | |
267 | break; | |
6013a59e | 268 | #endif |
bc2cef1e | 269 | default: |
6013a59e | 270 | m_freem(m); |
bc2cef1e | 271 | goto setup; |
6013a59e | 272 | } |
bc2cef1e | 273 | if (IF_QFULL(inq)) { |
6013a59e SL |
274 | IF_DROP(inq); |
275 | m_freem(m); | |
bc2cef1e | 276 | goto setup; |
6013a59e SL |
277 | } |
278 | s = splimp(); | |
279 | IF_ENQUEUE(inq, m); | |
280 | splx(s); | |
bc2cef1e SL |
281 | setup: |
282 | return (0); | |
6013a59e SL |
283 | } |
284 | ||
285 | /* | |
286 | * Ethernet output routine. (called by user) | |
287 | * Encapsulate a packet of type family for the local net. | |
288 | * Use trailer local net encapsulation if enough data in first | |
289 | * packet leaves a multiple of 512 bytes of data in remainder. | |
290 | * If destination is this address or broadcast, send packet to | |
291 | * loop device to kludge around the fact that 3com interfaces can't | |
292 | * talk to themselves. | |
293 | */ | |
6013a59e | 294 | enpoutput(ifp, m0, dst) |
bc2cef1e SL |
295 | struct ifnet *ifp; |
296 | struct mbuf *m0; | |
297 | struct sockaddr *dst; | |
6013a59e | 298 | { |
6013a59e SL |
299 | register struct enp_softc *es = &enp_softc[ifp->if_unit]; |
300 | register struct mbuf *m = m0; | |
301 | register struct ether_header *enp; | |
9d61b7ff | 302 | register int off; |
bc2cef1e SL |
303 | struct mbuf *mcopy = (struct mbuf *)0; |
304 | int type, s, error, usetrailers; | |
305 | u_char edst[6]; | |
306 | struct in_addr idst; | |
6013a59e | 307 | |
bc2cef1e SL |
308 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { |
309 | error = ENETDOWN; | |
310 | goto bad; | |
311 | } | |
312 | switch (dst->sa_family) { | |
6013a59e SL |
313 | #ifdef INET |
314 | case AF_INET: | |
315 | idst = ((struct sockaddr_in *)dst)->sin_addr; | |
bc2cef1e SL |
316 | if (!arpresolve(&es->es_ac, m, &idst, edst, &usetrailers)) |
317 | return (0); /* if not yet resolved */ | |
318 | if (!bcmp((caddr_t)edst, (caddr_t)etherbroadcastaddr, | |
319 | sizeof (edst))) | |
320 | mcopy = m_copy(m, 0, (int)M_COPYALL); | |
321 | off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len; | |
322 | if (usetrailers && off > 0 && (off & 0x1ff) == 0 && | |
323 | m->m_off >= MMINOFF + 2 * sizeof (u_short)) { | |
324 | type = ETHERTYPE_TRAIL + (off>>9); | |
325 | m->m_off -= 2 * sizeof (u_short); | |
326 | m->m_len += 2 * sizeof (u_short); | |
327 | *mtod(m, u_short *) = ETHERTYPE_IP; | |
328 | *(mtod(m, u_short *) + 1) = m->m_len; | |
329 | goto gottrailertype; | |
6013a59e | 330 | } |
bc2cef1e | 331 | type = ETHERTYPE_IP; |
6013a59e SL |
332 | off = 0; |
333 | goto gottype; | |
334 | #endif | |
bc2cef1e SL |
335 | #ifdef NS |
336 | case AF_NS: | |
337 | bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), | |
338 | (caddr_t)edst, sizeof (edst)); | |
339 | if (!bcmp((caddr_t)edst, (caddr_t)&ns_broadhost, sizeof (edst))) | |
340 | mcopy = m_copy(m, 0, (int)M_COPYALL); | |
341 | else if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, | |
342 | sizeof (edst))) | |
343 | return (looutput(&loif, m, dst)); | |
344 | type = ETHERTYPE_NS; | |
345 | off = 0; | |
346 | goto gottype; | |
6013a59e | 347 | #endif |
6013a59e SL |
348 | case AF_UNSPEC: |
349 | enp = (struct ether_header *)dst->sa_data; | |
bc2cef1e | 350 | bcopy((caddr_t)enp->ether_dhost, (caddr_t)edst, sizeof (edst)); |
6013a59e SL |
351 | type = enp->ether_type; |
352 | goto gottype; | |
353 | ||
354 | default: | |
bc2cef1e SL |
355 | log(LOG_ERR, "enp%d: can't handle af%d\n", |
356 | ifp->if_unit, dst->sa_family); | |
6013a59e SL |
357 | error = EAFNOSUPPORT; |
358 | goto bad; | |
359 | } | |
360 | ||
361 | gottrailertype: | |
362 | /* | |
363 | * Packet to be sent as trailer: move first packet | |
364 | * (control information) to end of chain. | |
365 | */ | |
366 | while (m->m_next) | |
367 | m = m->m_next; | |
368 | m->m_next = m0; | |
369 | m = m0->m_next; | |
370 | m0->m_next = 0; | |
371 | m0 = m; | |
372 | ||
373 | gottype: | |
374 | /* | |
375 | * Add local net header. If no space in first mbuf, | |
376 | * allocate another. | |
377 | */ | |
378 | if (m->m_off > MMAXOFF || | |
bc2cef1e | 379 | MMINOFF + sizeof (struct ether_header) > m->m_off) { |
6013a59e | 380 | m = m_get(M_DONTWAIT, MT_HEADER); |
bc2cef1e | 381 | if (m == 0) { |
6013a59e SL |
382 | error = ENOBUFS; |
383 | goto bad; | |
384 | } | |
385 | m->m_next = m0; | |
386 | m->m_off = MMINOFF; | |
bc2cef1e SL |
387 | m->m_len = sizeof (struct ether_header); |
388 | } else { | |
389 | m->m_off -= sizeof (struct ether_header); | |
390 | m->m_len += sizeof (struct ether_header); | |
6013a59e SL |
391 | } |
392 | enp = mtod(m, struct ether_header *); | |
bc2cef1e SL |
393 | bcopy((caddr_t)edst, (caddr_t)enp->ether_dhost, sizeof (edst)); |
394 | bcopy((caddr_t)es->es_enaddr, (caddr_t)enp->ether_shost, | |
395 | sizeof (es->es_enaddr)); | |
396 | enp->ether_type = htons((u_short)type); | |
6013a59e SL |
397 | |
398 | /* | |
399 | * Queue message on interface if possible | |
400 | */ | |
6013a59e | 401 | s = splimp(); |
bc2cef1e | 402 | if (enpput(ifp->if_unit, m)) { |
6013a59e | 403 | error = ENOBUFS; |
6013a59e SL |
404 | goto qfull; |
405 | } | |
bc2cef1e | 406 | splx(s); |
6013a59e | 407 | es->es_if.if_opackets++; |
bc2cef1e | 408 | return (mcopy ? looutput(&loif, mcopy, dst) : 0); |
6013a59e | 409 | qfull: |
bc2cef1e | 410 | splx(s); |
6013a59e SL |
411 | m0 = m; |
412 | bad: | |
413 | m_freem(m0); | |
bc2cef1e SL |
414 | if (mcopy) |
415 | m_freem(mcopy); | |
416 | return (error); | |
6013a59e SL |
417 | } |
418 | ||
419 | /* | |
bc2cef1e | 420 | * Routine to copy from mbuf chain to transmitter buffer on the VERSAbus. |
6013a59e | 421 | */ |
bc2cef1e SL |
422 | enpput(unit, m) |
423 | int unit; | |
424 | struct mbuf *m; | |
6013a59e SL |
425 | { |
426 | register BCB *bcbp; | |
bc2cef1e | 427 | register struct enpdevice *addr; |
6013a59e SL |
428 | register struct mbuf *mp; |
429 | register u_char *bp; | |
bc2cef1e SL |
430 | register u_int len; |
431 | u_char *mcp; | |
6013a59e | 432 | |
bc2cef1e | 433 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
9d61b7ff | 434 | if (ringempty((RING *)&addr->enp_hostfree)) |
bc2cef1e | 435 | return (1); |
9d61b7ff | 436 | bcbp = (BCB *)ringget((RING *)&addr->enp_hostfree); |
6013a59e | 437 | bcbp->b_len = 0; |
6013a59e | 438 | bp = (u_char *)bcbp->b_addr; |
bc2cef1e | 439 | for (mp = m; mp; mp = mp->m_next) { |
6013a59e | 440 | len = mp->m_len; |
bc2cef1e | 441 | if (len == 0) |
6013a59e | 442 | continue; |
bc2cef1e SL |
443 | mcp = mtod(mp, u_char *); |
444 | enpcopy(mcp, bp, len); | |
6013a59e SL |
445 | bp += len; |
446 | bcbp->b_len += len; | |
447 | } | |
9d61b7ff | 448 | bcbp->b_len = MAX(ETHERMIN, bcbp->b_len); |
6013a59e | 449 | bcbp->b_reserved = 0; |
9d61b7ff | 450 | if (ringput((RING *)&addr->enp_toenp, bcbp) == 1) |
bc2cef1e | 451 | INTR_ENP(addr); |
6013a59e | 452 | m_freem(m); |
bc2cef1e | 453 | return (0); |
6013a59e SL |
454 | } |
455 | ||
456 | /* | |
bc2cef1e | 457 | * Routine to copy from VERSAbus memory into mbufs. |
6013a59e SL |
458 | * |
459 | * Warning: This makes the fairly safe assumption that | |
460 | * mbufs have even lengths. | |
461 | */ | |
462 | struct mbuf * | |
bc2cef1e SL |
463 | enpget(rxbuf, totlen, off0, ifp) |
464 | u_char *rxbuf; | |
465 | int totlen, off0; | |
466 | struct ifnet *ifp; | |
6013a59e | 467 | { |
bc2cef1e | 468 | register u_char *cp, *mcp; |
6013a59e | 469 | register struct mbuf *m; |
bc2cef1e SL |
470 | struct mbuf *top = 0, **mp = ⊤ |
471 | int len, off = off0; | |
6013a59e | 472 | |
bc2cef1e SL |
473 | cp = rxbuf + sizeof (struct ether_header); |
474 | while (totlen > 0) { | |
6013a59e SL |
475 | MGET(m, M_DONTWAIT, MT_DATA); |
476 | if (m == 0) | |
477 | goto bad; | |
bc2cef1e | 478 | if (off) { |
6013a59e | 479 | len = totlen - off; |
bc2cef1e SL |
480 | cp = rxbuf + sizeof (struct ether_header) + off; |
481 | } else | |
6013a59e | 482 | len = totlen; |
bc2cef1e | 483 | if (len >= NBPG) { |
bc2cef1e SL |
484 | MCLGET(m); |
485 | if (m->m_len == CLBYTES) | |
486 | m->m_len = len = MIN(len, CLBYTES); | |
487 | else | |
6013a59e | 488 | m->m_len = len = MIN(MLEN, len); |
bc2cef1e | 489 | } else { |
6013a59e SL |
490 | m->m_len = len = MIN(MLEN, len); |
491 | m->m_off = MMINOFF; | |
492 | } | |
6013a59e | 493 | mcp = mtod(m, u_char *); |
bc2cef1e SL |
494 | if (ifp) { |
495 | /* | |
496 | * Prepend interface pointer to first mbuf. | |
497 | */ | |
498 | *(mtod(m, struct ifnet **)) = ifp; | |
499 | mcp += sizeof (ifp); | |
500 | len -= sizeof (ifp); | |
501 | ifp = (struct ifnet *)0; | |
502 | } | |
9d61b7ff | 503 | enpcopy(cp, mcp, (u_int)len); |
6013a59e SL |
504 | cp += len; |
505 | *mp = m; | |
506 | mp = &m->m_next; | |
bc2cef1e | 507 | if (off == 0) { |
6013a59e SL |
508 | totlen -= len; |
509 | continue; | |
510 | } | |
511 | off += len; | |
bc2cef1e SL |
512 | if (off == totlen) { |
513 | cp = rxbuf + sizeof (struct ether_header); | |
6013a59e SL |
514 | off = 0; |
515 | totlen = off0; | |
516 | } | |
517 | } | |
518 | return (top); | |
519 | bad: | |
520 | m_freem(top); | |
521 | return (0); | |
522 | } | |
523 | ||
bc2cef1e | 524 | enpcopy(from, to, cnt) |
9d61b7ff SL |
525 | register u_char *from, *to; |
526 | register u_int cnt; | |
bc2cef1e SL |
527 | { |
528 | register c; | |
529 | register short *f, *t; | |
530 | ||
531 | if (((int)from&01) && ((int)to&01)) { | |
532 | /* source & dest at odd addresses */ | |
533 | *to++ = *from++; | |
534 | --cnt; | |
535 | } | |
536 | if (cnt > 1 && (((int)to&01) == 0) && (((int)from&01) == 0)) { | |
537 | t = (short *)to; | |
538 | f = (short *)from; | |
539 | for (c = cnt>>1; c; --c) /* even address copy */ | |
540 | *t++ = *f++; | |
541 | cnt &= 1; | |
542 | if (cnt) { /* odd len */ | |
9d61b7ff SL |
543 | from = (u_char *)f; |
544 | to = (u_char *)t; | |
bc2cef1e SL |
545 | *to = *from; |
546 | } | |
547 | } | |
9d61b7ff | 548 | while ((int)cnt-- > 0) /* one of the address(es) must be odd */ |
bc2cef1e SL |
549 | *to++ = *from++; |
550 | } | |
551 | ||
6013a59e SL |
552 | /* |
553 | * Process an ioctl request. | |
6013a59e | 554 | */ |
6013a59e | 555 | enpioctl(ifp, cmd, data) |
bc2cef1e SL |
556 | register struct ifnet *ifp; |
557 | int cmd; | |
558 | caddr_t data; | |
6013a59e | 559 | { |
bc2cef1e SL |
560 | register struct ifaddr *ifa = (struct ifaddr *)data; |
561 | struct enpdevice *addr; | |
562 | int s = splimp(), error = 0; | |
6013a59e SL |
563 | |
564 | switch (cmd) { | |
565 | ||
566 | case SIOCSIFADDR: | |
bc2cef1e SL |
567 | ifp->if_flags |= IFF_UP; |
568 | switch (ifa->ifa_addr.sa_family) { | |
569 | #ifdef INET | |
570 | case AF_INET: | |
571 | enpinit(ifp->if_unit); | |
572 | ((struct arpcom *)ifp)->ac_ipaddr = | |
573 | IA_SIN(ifa)->sin_addr; | |
574 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
575 | break; | |
576 | #endif | |
577 | #ifdef NS | |
578 | case AF_NS: { | |
579 | struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; | |
580 | struct enp_softc *es = &enp_softc[ifp->if_unit]; | |
581 | ||
582 | if (!ns_nullhost(*ina)) { | |
583 | ifp->if_flags &= ~IFF_RUNNING; | |
584 | addr = (struct enpdevice *) | |
585 | enpinfo[ifp->if_unit]->ui_addr; | |
586 | enpsetaddr(ifp->if_unit, addr, | |
587 | ina->x_host.c_host); | |
588 | } else | |
589 | ina->x_host = *(union ns_host *)es->es_enaddr; | |
590 | enpinit(ifp->if_unit); | |
6013a59e SL |
591 | break; |
592 | } | |
bc2cef1e SL |
593 | #endif |
594 | default: | |
595 | enpinit(ifp->if_unit); | |
596 | break; | |
6013a59e | 597 | } |
6013a59e SL |
598 | break; |
599 | ||
bc2cef1e SL |
600 | case SIOCSIFFLAGS: |
601 | if ((ifp->if_flags&IFF_UP) == 0 && ifp->if_flags&IFF_RUNNING) { | |
602 | enpinit(ifp->if_unit); /* reset board */ | |
603 | ifp->if_flags &= ~IFF_RUNNING; | |
604 | } else if (ifp->if_flags&IFF_UP && | |
605 | (ifp->if_flags&IFF_RUNNING) == 0) | |
606 | enpinit(ifp->if_unit); | |
6013a59e SL |
607 | break; |
608 | ||
609 | default: | |
610 | error = EINVAL; | |
611 | } | |
bc2cef1e SL |
612 | splx(s); |
613 | return (error); | |
6013a59e SL |
614 | } |
615 | ||
bc2cef1e SL |
616 | enpsetaddr(unit, addr, enaddr) |
617 | int unit; | |
618 | struct enpdevice *addr; | |
619 | u_char *enaddr; | |
6013a59e | 620 | { |
bc2cef1e SL |
621 | u_char *cp; |
622 | int i, code; | |
623 | ||
624 | cp = &addr->enp_addr.e_baseaddr.ea_addr[0]; | |
625 | for (i = 0; i < 6; i++) | |
626 | *cp++ = ~*enaddr++; | |
9d61b7ff SL |
627 | enpcopy((u_char *)&addr->enp_addr.e_listsize, (u_char *)&code, |
628 | sizeof (code)); | |
bc2cef1e | 629 | code |= E_ADDR_SUPP; |
9d61b7ff SL |
630 | enpcopy((u_char *)&code, (u_char *)&addr->enp_addr.e_listsize, |
631 | sizeof (code)); | |
bc2cef1e | 632 | enpinit(unit); |
6013a59e SL |
633 | } |
634 | ||
635 | /* | |
bc2cef1e | 636 | * Routines to synchronize enp and host. |
6013a59e | 637 | */ |
9d61b7ff | 638 | #ifdef notdef |
6013a59e | 639 | static |
bc2cef1e SL |
640 | ringinit(rp, size) |
641 | register RING *rp; | |
6013a59e | 642 | { |
6013a59e SL |
643 | |
644 | rp->r_rdidx = rp->r_wrtidx = 0; | |
645 | rp->r_size = size; | |
646 | } | |
647 | ||
648 | static | |
9d61b7ff | 649 | ringfull(rp) |
bc2cef1e | 650 | register RING *rp; |
6013a59e | 651 | { |
9d61b7ff | 652 | register short idx; |
bc2cef1e | 653 | |
9d61b7ff SL |
654 | idx = (rp->r_wrtidx + 1) & (rp->r_size-1); |
655 | return (idx == rp->r_rdidx); | |
6013a59e SL |
656 | } |
657 | ||
658 | static | |
9d61b7ff | 659 | fir(rp) |
bc2cef1e | 660 | register RING *rp; |
6013a59e | 661 | { |
6013a59e | 662 | |
9d61b7ff SL |
663 | return (rp->r_rdidx != rp->r_wrtidx ? rp->r_slot[rp->r_rdidx] : 0); |
664 | } | |
665 | #endif | |
666 | ||
667 | static | |
668 | ringempty(rp) | |
669 | register RING *rp; | |
670 | { | |
671 | ||
672 | return (rp->r_rdidx == rp->r_wrtidx); | |
6013a59e SL |
673 | } |
674 | ||
675 | static | |
bc2cef1e SL |
676 | ringput(rp, v) |
677 | register RING *rp; | |
9d61b7ff | 678 | BCB *v; |
6013a59e SL |
679 | { |
680 | register int idx; | |
6013a59e SL |
681 | |
682 | idx = (rp->r_wrtidx + 1) & (rp->r_size-1); | |
bc2cef1e | 683 | if (idx != rp->r_rdidx) { |
9d61b7ff | 684 | rp->r_slot[rp->r_wrtidx] = (int)v; |
6013a59e | 685 | rp->r_wrtidx = idx; |
bc2cef1e | 686 | if ((idx -= rp->r_rdidx) < 0) |
6013a59e | 687 | idx += rp->r_size; |
bc2cef1e | 688 | return (idx); /* num ring entries */ |
6013a59e | 689 | } |
bc2cef1e | 690 | return (0); |
6013a59e SL |
691 | } |
692 | ||
693 | static | |
bc2cef1e SL |
694 | ringget(rp) |
695 | register RING *rp; | |
6013a59e SL |
696 | { |
697 | register int i = 0; | |
bc2cef1e SL |
698 | |
699 | if (rp->r_rdidx != rp->r_wrtidx) { | |
700 | i = rp->r_slot[rp->r_rdidx]; | |
6013a59e SL |
701 | rp->r_rdidx = (++rp->r_rdidx) & (rp->r_size-1); |
702 | } | |
bc2cef1e | 703 | return (i); |
6013a59e SL |
704 | } |
705 | ||
bc2cef1e SL |
706 | /* |
707 | * ENP Ram device. | |
708 | */ | |
709 | enpr_open(dev) | |
710 | dev_t dev; | |
6013a59e | 711 | { |
bc2cef1e SL |
712 | register int unit = ENPUNIT(dev); |
713 | struct vba_device *ui; | |
714 | struct enpdevice *addr; | |
6013a59e | 715 | |
bc2cef1e SL |
716 | if (unit >= NENP || (ui = enpinfo[unit]) == 0 || ui->ui_alive == 0 || |
717 | (addr = (struct enpdevice *)ui->ui_addr) == 0) | |
718 | return (ENODEV); | |
719 | if (addr->enp_state != S_ENPRESET) | |
720 | return (EACCES); /* enp is not in reset state, don't open */ | |
721 | return (0); | |
6013a59e SL |
722 | } |
723 | ||
9d61b7ff | 724 | /*ARGSUSED*/ |
bc2cef1e SL |
725 | enpr_close(dev) |
726 | dev_t dev; | |
6013a59e | 727 | { |
6013a59e | 728 | |
bc2cef1e | 729 | return (0); |
6013a59e SL |
730 | } |
731 | ||
bc2cef1e SL |
732 | enpr_read(dev, uio) |
733 | dev_t dev; | |
734 | register struct uio *uio; | |
6013a59e | 735 | { |
bc2cef1e SL |
736 | register struct iovec *iov; |
737 | struct enpdevice *addr; | |
738 | int error; | |
6013a59e | 739 | |
bc2cef1e SL |
740 | if (uio->uio_offset > RAM_SIZE) |
741 | return (ENODEV); | |
9d61b7ff | 742 | iov = uio->uio_iov; |
bc2cef1e SL |
743 | if (uio->uio_offset + iov->iov_len > RAM_SIZE) |
744 | iov->iov_len = RAM_SIZE - uio->uio_offset; | |
745 | addr = (struct enpdevice *)enpinfo[ENPUNIT(dev)]->ui_addr; | |
9d61b7ff | 746 | error = useracc(iov->iov_base, (unsigned)iov->iov_len, 0); |
bc2cef1e SL |
747 | if (error) |
748 | return (error); | |
9d61b7ff SL |
749 | enpcopy((u_char *)&addr->enp_ram[uio->uio_offset], |
750 | (u_char *)iov->iov_base, (u_int)iov->iov_len); | |
bc2cef1e SL |
751 | uio->uio_resid -= iov->iov_len; |
752 | iov->iov_len = 0; | |
753 | return (0); | |
6013a59e SL |
754 | } |
755 | ||
bc2cef1e SL |
756 | enpr_write(dev, uio) |
757 | dev_t dev; | |
758 | register struct uio *uio; | |
759 | { | |
760 | register struct enpdevice *addr; | |
761 | register struct iovec *iov; | |
762 | register error; | |
6013a59e | 763 | |
bc2cef1e SL |
764 | addr = (struct enpdevice *)enpinfo[ENPUNIT(dev)]->ui_addr; |
765 | iov = uio->uio_iov; | |
766 | if (uio->uio_offset > RAM_SIZE) | |
767 | return (ENODEV); | |
768 | if (uio->uio_offset + iov->iov_len > RAM_SIZE) | |
769 | iov->iov_len = RAM_SIZE - uio->uio_offset; | |
9d61b7ff | 770 | error = useracc(iov->iov_base, (unsigned)iov->iov_len, 1); |
bc2cef1e SL |
771 | if (error) |
772 | return (error); | |
9d61b7ff SL |
773 | enpcopy((u_char *)iov->iov_base, |
774 | (u_char *)&addr->enp_ram[uio->uio_offset], (u_int)iov->iov_len); | |
bc2cef1e SL |
775 | uio->uio_resid -= iov->iov_len; |
776 | iov->iov_len = 0; | |
777 | return (0); | |
778 | } | |
779 | ||
9d61b7ff | 780 | /*ARGSUSED*/ |
bc2cef1e SL |
781 | enpr_ioctl(dev, cmd, data) |
782 | dev_t dev; | |
783 | caddr_t data; | |
6013a59e | 784 | { |
bc2cef1e SL |
785 | register struct enpdevice *addr; |
786 | register unit = ENPUNIT(dev); | |
6013a59e | 787 | |
bc2cef1e SL |
788 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
789 | switch(cmd) { | |
790 | ||
791 | case ENPIOGO: | |
792 | /* not needed if prom based version */ | |
793 | addr->enp_base = (int)addr; | |
794 | addr->enp_intrvec = enp_softc[unit].es_ivec; | |
795 | ENP_GO(addr, ENPSTART); | |
796 | DELAY(200000); | |
797 | enpinit(unit); | |
798 | addr->enp_state = S_ENPRUN; /* it is running now */ | |
799 | /* end of not needed */ | |
800 | break; | |
801 | ||
802 | case ENPIORESET: | |
803 | RESET_ENP(addr); | |
804 | addr->enp_state = S_ENPRESET; /* it is reset now */ | |
805 | DELAY(100000); | |
806 | break; | |
6013a59e | 807 | } |
bc2cef1e | 808 | return (0); |
6013a59e SL |
809 | } |
810 | #endif |