Commit | Line | Data |
---|---|---|
357f1ef5 MK |
1 | /* |
2 | * Copyright (c) 1988 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
979ea28d MK |
5 | * This code is derived from software contributed to Berkeley by |
6 | * Computer Consoles Inc. | |
7 | * | |
b702c21d | 8 | * %sccs.include.redist.c% |
357f1ef5 | 9 | * |
b702c21d | 10 | * @(#)if_enp.c 7.7 (Berkeley) %G% |
357f1ef5 | 11 | */ |
6013a59e SL |
12 | |
13 | #include "enp.h" | |
6013a59e | 14 | #if NENP > 0 |
6013a59e | 15 | /* |
7779e59b | 16 | * CMC ENP-20 Ethernet Controller. |
6013a59e | 17 | */ |
6013a59e SL |
18 | #include "param.h" |
19 | #include "systm.h" | |
20 | #include "mbuf.h" | |
21 | #include "buf.h" | |
22 | #include "protosw.h" | |
23 | #include "socket.h" | |
24 | #include "vmmac.h" | |
bc2cef1e | 25 | #include "ioctl.h" |
6013a59e | 26 | #include "errno.h" |
bc2cef1e SL |
27 | #include "vmparam.h" |
28 | #include "syslog.h" | |
6013a59e SL |
29 | #include "uio.h" |
30 | ||
31 | #include "../net/if.h" | |
32 | #include "../net/netisr.h" | |
33 | #include "../net/route.h" | |
bc2cef1e | 34 | #ifdef INET |
6013a59e | 35 | #include "../netinet/in.h" |
6013a59e | 36 | #include "../netinet/in_systm.h" |
bc2cef1e | 37 | #include "../netinet/in_var.h" |
6013a59e SL |
38 | #include "../netinet/ip.h" |
39 | #include "../netinet/ip_var.h" | |
40 | #include "../netinet/if_ether.h" | |
bc2cef1e SL |
41 | #endif |
42 | #ifdef NS | |
43 | #include "../netns/ns.h" | |
44 | #include "../netns/ns_if.h" | |
45 | #endif | |
46 | ||
47 | #include "../tahoe/cpu.h" | |
48 | #include "../tahoe/pte.h" | |
49 | #include "../tahoe/mtpr.h" | |
6013a59e SL |
50 | |
51 | #include "../tahoevba/vbavar.h" | |
bc2cef1e | 52 | #include "../tahoeif/if_enpreg.h" |
6013a59e | 53 | |
bc2cef1e SL |
54 | #define ENPSTART 0xf02000 /* standard enp start addr */ |
55 | #define ENPUNIT(dev) (minor(dev)) /* for enp ram devices */ | |
7779e59b SL |
56 | /* macros for dealing with longs in i/o space */ |
57 | #define ENPGETLONG(a) ((((u_short *)(a))[0] << 16)|(((u_short *)(a))[1])) | |
58 | #define ENPSETLONG(a,v) \ | |
59 | { register u_short *wp = (u_short *)(a); \ | |
60 | wp[0] = ((u_short *)&(v))[0]; wp[1] = ((u_short *)&(v))[1];} | |
6013a59e SL |
61 | |
62 | int enpprobe(), enpattach(), enpintr(); | |
fea301bf | 63 | long enpstd[] = { 0xfff41000, 0xfff61000, 0 }; |
bc2cef1e | 64 | struct vba_device *enpinfo[NENP]; |
6013a59e | 65 | struct vba_driver enpdriver = |
bc2cef1e | 66 | { enpprobe, 0, enpattach, 0, enpstd, "enp", enpinfo, "enp-20", 0 }; |
6013a59e | 67 | |
979ea28d | 68 | int enpinit(), enpioctl(), enpreset(), enpoutput(), enpstart(); |
6013a59e SL |
69 | struct mbuf *enpget(); |
70 | ||
6013a59e SL |
71 | /* |
72 | * Ethernet software status per interface. | |
73 | * | |
74 | * Each interface is referenced by a network interface structure, | |
75 | * es_if, which the routing code uses to locate the interface. | |
76 | * This structure contains the output queue for the interface, its address, ... | |
77 | */ | |
bc2cef1e SL |
78 | struct enp_softc { |
79 | struct arpcom es_ac; /* common ethernet structures */ | |
80 | #define es_if es_ac.ac_if | |
7779e59b | 81 | #define es_addr es_ac.ac_enaddr |
bc2cef1e | 82 | short es_ivec; /* interrupt vector */ |
bc2cef1e SL |
83 | } enp_softc[NENP]; |
84 | extern struct ifnet loif; | |
85 | ||
86 | enpprobe(reg, vi) | |
87 | caddr_t reg; | |
88 | struct vba_device *vi; | |
6013a59e | 89 | { |
bc2cef1e SL |
90 | register br, cvec; /* must be r12, r11 */ |
91 | register struct enpdevice *addr = (struct enpdevice *)reg; | |
92 | struct enp_softc *es = &enp_softc[vi->ui_unit]; | |
6013a59e | 93 | |
bc2cef1e | 94 | #ifdef lint |
9d61b7ff | 95 | br = 0; cvec = br; br = cvec; |
bc2cef1e SL |
96 | enpintr(0); |
97 | #endif | |
9d61b7ff | 98 | if (badaddr((caddr_t)addr, 2) || badaddr((caddr_t)&addr->enp_ram[0], 2)) |
bc2cef1e SL |
99 | return (0); |
100 | es->es_ivec = --vi->ui_hd->vh_lastiv; | |
101 | addr->enp_state = S_ENPRESET; /* reset by VERSAbus reset */ | |
102 | br = 0x14, cvec = es->es_ivec; /* XXX */ | |
103 | return (sizeof (struct enpdevice)); | |
6013a59e SL |
104 | } |
105 | ||
106 | /* | |
107 | * Interface exists: make available by filling in network interface | |
108 | * record. System will initialize the interface when it is ready | |
109 | * to accept packets. | |
110 | */ | |
bc2cef1e SL |
111 | enpattach(ui) |
112 | register struct vba_device *ui; | |
6013a59e | 113 | { |
bc2cef1e SL |
114 | struct enp_softc *es = &enp_softc[ui->ui_unit]; |
115 | register struct ifnet *ifp = &es->es_if; | |
6013a59e | 116 | |
bc2cef1e | 117 | ifp->if_unit = ui->ui_unit; |
6013a59e SL |
118 | ifp->if_name = "enp"; |
119 | ifp->if_mtu = ETHERMTU; | |
6013a59e SL |
120 | ifp->if_init = enpinit; |
121 | ifp->if_ioctl = enpioctl; | |
385e8f24 | 122 | ifp->if_output = ether_output; |
979ea28d | 123 | ifp->if_start = enpstart; |
003ca8a0 MK |
124 | ifp->if_reset = enpreset; |
125 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; | |
6013a59e SL |
126 | if_attach(ifp); |
127 | } | |
128 | ||
6013a59e | 129 | /* |
bc2cef1e | 130 | * Reset of interface after "system" reset. |
6013a59e | 131 | */ |
bc2cef1e SL |
132 | enpreset(unit, vban) |
133 | int unit, vban; | |
6013a59e | 134 | { |
bc2cef1e | 135 | register struct vba_device *ui; |
6013a59e | 136 | |
bc2cef1e SL |
137 | if (unit >= NENP || (ui = enpinfo[unit]) == 0 || ui->ui_alive == 0 || |
138 | ui->ui_vbanum != vban) | |
139 | return; | |
140 | printf(" enp%d", unit); | |
6013a59e SL |
141 | enpinit(unit); |
142 | } | |
143 | ||
144 | /* | |
bc2cef1e | 145 | * Initialization of interface; clear recorded pending operations. |
6013a59e | 146 | */ |
bc2cef1e SL |
147 | enpinit(unit) |
148 | int unit; | |
6013a59e | 149 | { |
bc2cef1e SL |
150 | struct enp_softc *es = &enp_softc[unit]; |
151 | register struct vba_device *ui = enpinfo[unit]; | |
152 | struct enpdevice *addr; | |
153 | register struct ifnet *ifp = &es->es_if; | |
154 | int s; | |
6013a59e | 155 | |
bc2cef1e SL |
156 | if (ifp->if_addrlist == (struct ifaddr *)0) |
157 | return; | |
158 | if ((ifp->if_flags & IFF_RUNNING) == 0) { | |
159 | addr = (struct enpdevice *)ui->ui_addr; | |
160 | s = splimp(); | |
161 | RESET_ENP(addr); | |
162 | DELAY(200000); | |
bc2cef1e SL |
163 | es->es_if.if_flags |= IFF_RUNNING; |
164 | splx(s); | |
165 | } | |
6013a59e SL |
166 | } |
167 | ||
6013a59e SL |
168 | /* |
169 | * Ethernet interface interrupt. | |
170 | */ | |
bc2cef1e SL |
171 | enpintr(unit) |
172 | int unit; | |
6013a59e | 173 | { |
bc2cef1e SL |
174 | register struct enpdevice *addr; |
175 | register BCB *bcbp; | |
6013a59e | 176 | |
bc2cef1e | 177 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
9d61b7ff | 178 | #if ENP == 30 |
bc2cef1e | 179 | if (!IS_ENP_INTR(addr)) |
6013a59e | 180 | return; |
bc2cef1e | 181 | ACK_ENP_INTR(addr); |
9d61b7ff SL |
182 | #endif |
183 | while ((bcbp = (BCB *)ringget((RING *)&addr->enp_tohost )) != 0) { | |
979ea28d | 184 | enpread(&enp_softc[unit], bcbp); |
9d61b7ff | 185 | (void) ringput((RING *)&addr->enp_enpfree, bcbp); |
6013a59e | 186 | } |
6013a59e SL |
187 | } |
188 | ||
189 | /* | |
190 | * Read input packet, examine its packet type, and enqueue it. | |
191 | */ | |
9d61b7ff | 192 | enpread(es, bcbp) |
bc2cef1e SL |
193 | struct enp_softc *es; |
194 | register BCB *bcbp; | |
6013a59e SL |
195 | { |
196 | register struct ether_header *enp; | |
197 | struct mbuf *m; | |
9d61b7ff | 198 | int s, len, off, resid; |
6013a59e SL |
199 | |
200 | es->es_if.if_ipackets++; | |
6013a59e SL |
201 | /* |
202 | * Get input data length. | |
203 | * Get pointer to ethernet header (in input buffer). | |
204 | * Deal with trailer protocol: if type is PUP trailer | |
205 | * get true type from first 16-bit word past data. | |
206 | * Remember that type was trailer by setting off. | |
207 | */ | |
bc2cef1e | 208 | len = bcbp->b_msglen - sizeof (struct ether_header); |
7779e59b | 209 | enp = (struct ether_header *)ENPGETLONG(&bcbp->b_addr); |
bc2cef1e SL |
210 | #define enpdataaddr(enp, off, type) \ |
211 | ((type)(((caddr_t)(((char *)enp)+sizeof (struct ether_header))+(off)))) | |
212 | enp->ether_type = ntohs((u_short)enp->ether_type); | |
213 | if (enp->ether_type >= ETHERTYPE_TRAIL && | |
214 | enp->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
215 | off = (enp->ether_type - ETHERTYPE_TRAIL) * 512; | |
216 | if (off >= ETHERMTU) | |
979ea28d | 217 | return; |
bc2cef1e SL |
218 | enp->ether_type = ntohs(*enpdataaddr(enp, off, u_short *)); |
219 | resid = ntohs(*(enpdataaddr(enp, off+2, u_short *))); | |
220 | if (off + resid > len) | |
979ea28d | 221 | return; |
6013a59e | 222 | len = off + resid; |
bc2cef1e | 223 | } else |
6013a59e | 224 | off = 0; |
bc2cef1e | 225 | if (len == 0) |
979ea28d | 226 | return; |
6013a59e | 227 | |
6013a59e SL |
228 | /* |
229 | * Pull packet off interface. Off is nonzero if packet | |
230 | * has trailing header; enpget will then force this header | |
979ea28d | 231 | * information to be at the front. |
6013a59e | 232 | */ |
7779e59b | 233 | m = enpget((u_char *)enp, len, off, &es->es_if); |
bc2cef1e | 234 | if (m == 0) |
979ea28d | 235 | return; |
385e8f24 | 236 | ether_input(&es->es_if, enp, m); |
6013a59e SL |
237 | } |
238 | ||
979ea28d | 239 | enpstart(ifp) |
bc2cef1e | 240 | struct ifnet *ifp; |
6013a59e | 241 | { |
6013a59e | 242 | |
979ea28d | 243 | if (enpput(ifp)) |
003ca8a0 MK |
244 | return (ENOBUFS); |
245 | else | |
246 | return (0); | |
6013a59e SL |
247 | } |
248 | ||
249 | /* | |
bc2cef1e | 250 | * Routine to copy from mbuf chain to transmitter buffer on the VERSAbus. |
6013a59e | 251 | */ |
979ea28d MK |
252 | enpput(ifp) |
253 | struct ifnet *ifp; | |
6013a59e SL |
254 | { |
255 | register BCB *bcbp; | |
bc2cef1e | 256 | register struct enpdevice *addr; |
6013a59e SL |
257 | register struct mbuf *mp; |
258 | register u_char *bp; | |
bc2cef1e | 259 | register u_int len; |
003ca8a0 | 260 | int unit = ifp->if_unit, ret = 1; |
979ea28d | 261 | struct mbuf *m; |
6013a59e | 262 | |
bc2cef1e | 263 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
979ea28d | 264 | again: |
003ca8a0 MK |
265 | if (ringempty((RING *)&addr->enp_hostfree)) { |
266 | /* ifp->if_flags |= IFF_OACTIVE; */ | |
267 | return (ret); | |
268 | } | |
979ea28d | 269 | IF_DEQUEUE(&ifp->if_snd, m); |
003ca8a0 MK |
270 | if (m == 0) { |
271 | ifp->if_flags &= ~IFF_OACTIVE; | |
272 | return (0); | |
273 | } | |
9d61b7ff | 274 | bcbp = (BCB *)ringget((RING *)&addr->enp_hostfree); |
6013a59e | 275 | bcbp->b_len = 0; |
7779e59b | 276 | bp = (u_char *)ENPGETLONG(&bcbp->b_addr); |
bc2cef1e | 277 | for (mp = m; mp; mp = mp->m_next) { |
6013a59e | 278 | len = mp->m_len; |
bc2cef1e | 279 | if (len == 0) |
6013a59e | 280 | continue; |
003ca8a0 | 281 | enpcopy(mtod(mp, u_char *), bp, len); |
6013a59e SL |
282 | bp += len; |
283 | bcbp->b_len += len; | |
284 | } | |
003ca8a0 | 285 | bcbp->b_len = max(ETHERMIN+sizeof (struct ether_header), bcbp->b_len); |
6013a59e | 286 | bcbp->b_reserved = 0; |
9d61b7ff | 287 | if (ringput((RING *)&addr->enp_toenp, bcbp) == 1) |
bc2cef1e | 288 | INTR_ENP(addr); |
6013a59e | 289 | m_freem(m); |
003ca8a0 | 290 | ret = 0; |
979ea28d | 291 | goto again; |
6013a59e SL |
292 | } |
293 | ||
294 | /* | |
bc2cef1e | 295 | * Routine to copy from VERSAbus memory into mbufs. |
6013a59e SL |
296 | * |
297 | * Warning: This makes the fairly safe assumption that | |
298 | * mbufs have even lengths. | |
299 | */ | |
300 | struct mbuf * | |
979ea28d | 301 | enpget(rxbuf, totlen, off, ifp) |
bc2cef1e | 302 | u_char *rxbuf; |
979ea28d | 303 | int totlen, off; |
bc2cef1e | 304 | struct ifnet *ifp; |
6013a59e | 305 | { |
003ca8a0 | 306 | register u_char *cp; |
6013a59e | 307 | register struct mbuf *m; |
bc2cef1e | 308 | struct mbuf *top = 0, **mp = ⊤ |
979ea28d MK |
309 | int len; |
310 | u_char *packet_end; | |
311 | ||
312 | rxbuf += sizeof (struct ether_header); | |
313 | cp = rxbuf; | |
314 | packet_end = cp + totlen; | |
315 | if (off) { | |
316 | off += 2 * sizeof(u_short); | |
317 | totlen -= 2 *sizeof(u_short); | |
318 | cp = rxbuf + off; | |
319 | } | |
320 | ||
321 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
322 | if (m == 0) | |
323 | return (0); | |
324 | m->m_pkthdr.rcvif = ifp; | |
325 | m->m_pkthdr.len = totlen; | |
326 | m->m_len = MHLEN; | |
6013a59e | 327 | |
bc2cef1e | 328 | while (totlen > 0) { |
979ea28d MK |
329 | if (top) { |
330 | MGET(m, M_DONTWAIT, MT_DATA); | |
331 | if (m == 0) { | |
332 | m_freem(top); | |
333 | return (0); | |
334 | } | |
335 | m->m_len = MLEN; | |
336 | } | |
337 | len = min(totlen, (packet_end - cp)); | |
338 | if (len >= MINCLSIZE) { | |
339 | MCLGET(m, M_DONTWAIT); | |
340 | if (m->m_flags & M_EXT) | |
341 | m->m_len = len = min(len, MCLBYTES); | |
bc2cef1e | 342 | else |
979ea28d | 343 | len = m->m_len; |
bc2cef1e | 344 | } else { |
bc2cef1e | 345 | /* |
979ea28d | 346 | * Place initial small packet/header at end of mbuf. |
bc2cef1e | 347 | */ |
979ea28d | 348 | if (len < m->m_len) { |
003ca8a0 | 349 | if (top == 0 && len + max_linkhdr <= m->m_len) |
979ea28d MK |
350 | m->m_data += max_linkhdr; |
351 | m->m_len = len; | |
352 | } else | |
353 | len = m->m_len; | |
bc2cef1e | 354 | } |
003ca8a0 | 355 | enpcopy(cp, mtod(m, u_char *), (u_int)len); |
6013a59e SL |
356 | *mp = m; |
357 | mp = &m->m_next; | |
979ea28d MK |
358 | totlen -= len; |
359 | cp += len; | |
360 | if (cp == packet_end) | |
361 | cp = rxbuf; | |
6013a59e SL |
362 | } |
363 | return (top); | |
6013a59e SL |
364 | } |
365 | ||
bc2cef1e | 366 | enpcopy(from, to, cnt) |
9d61b7ff SL |
367 | register u_char *from, *to; |
368 | register u_int cnt; | |
bc2cef1e SL |
369 | { |
370 | register c; | |
371 | register short *f, *t; | |
372 | ||
373 | if (((int)from&01) && ((int)to&01)) { | |
374 | /* source & dest at odd addresses */ | |
375 | *to++ = *from++; | |
376 | --cnt; | |
377 | } | |
378 | if (cnt > 1 && (((int)to&01) == 0) && (((int)from&01) == 0)) { | |
379 | t = (short *)to; | |
380 | f = (short *)from; | |
381 | for (c = cnt>>1; c; --c) /* even address copy */ | |
382 | *t++ = *f++; | |
383 | cnt &= 1; | |
384 | if (cnt) { /* odd len */ | |
9d61b7ff SL |
385 | from = (u_char *)f; |
386 | to = (u_char *)t; | |
bc2cef1e SL |
387 | *to = *from; |
388 | } | |
389 | } | |
9d61b7ff | 390 | while ((int)cnt-- > 0) /* one of the address(es) must be odd */ |
bc2cef1e SL |
391 | *to++ = *from++; |
392 | } | |
393 | ||
6013a59e SL |
394 | /* |
395 | * Process an ioctl request. | |
6013a59e | 396 | */ |
6013a59e | 397 | enpioctl(ifp, cmd, data) |
bc2cef1e SL |
398 | register struct ifnet *ifp; |
399 | int cmd; | |
400 | caddr_t data; | |
6013a59e | 401 | { |
bc2cef1e SL |
402 | register struct ifaddr *ifa = (struct ifaddr *)data; |
403 | struct enpdevice *addr; | |
404 | int s = splimp(), error = 0; | |
6013a59e SL |
405 | |
406 | switch (cmd) { | |
407 | ||
408 | case SIOCSIFADDR: | |
bc2cef1e | 409 | ifp->if_flags |= IFF_UP; |
385e8f24 | 410 | switch (ifa->ifa_addr->sa_family) { |
bc2cef1e SL |
411 | #ifdef INET |
412 | case AF_INET: | |
413 | enpinit(ifp->if_unit); | |
414 | ((struct arpcom *)ifp)->ac_ipaddr = | |
415 | IA_SIN(ifa)->sin_addr; | |
416 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
417 | break; | |
418 | #endif | |
419 | #ifdef NS | |
420 | case AF_NS: { | |
421 | struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; | |
422 | struct enp_softc *es = &enp_softc[ifp->if_unit]; | |
423 | ||
424 | if (!ns_nullhost(*ina)) { | |
425 | ifp->if_flags &= ~IFF_RUNNING; | |
426 | addr = (struct enpdevice *) | |
427 | enpinfo[ifp->if_unit]->ui_addr; | |
428 | enpsetaddr(ifp->if_unit, addr, | |
429 | ina->x_host.c_host); | |
430 | } else | |
7779e59b | 431 | ina->x_host = *(union ns_host *)es->es_addr; |
bc2cef1e | 432 | enpinit(ifp->if_unit); |
6013a59e SL |
433 | break; |
434 | } | |
bc2cef1e SL |
435 | #endif |
436 | default: | |
437 | enpinit(ifp->if_unit); | |
438 | break; | |
6013a59e | 439 | } |
6013a59e SL |
440 | break; |
441 | ||
bc2cef1e SL |
442 | case SIOCSIFFLAGS: |
443 | if ((ifp->if_flags&IFF_UP) == 0 && ifp->if_flags&IFF_RUNNING) { | |
444 | enpinit(ifp->if_unit); /* reset board */ | |
445 | ifp->if_flags &= ~IFF_RUNNING; | |
446 | } else if (ifp->if_flags&IFF_UP && | |
447 | (ifp->if_flags&IFF_RUNNING) == 0) | |
448 | enpinit(ifp->if_unit); | |
6013a59e SL |
449 | break; |
450 | ||
451 | default: | |
452 | error = EINVAL; | |
453 | } | |
bc2cef1e SL |
454 | splx(s); |
455 | return (error); | |
6013a59e SL |
456 | } |
457 | ||
bc2cef1e SL |
458 | enpsetaddr(unit, addr, enaddr) |
459 | int unit; | |
460 | struct enpdevice *addr; | |
461 | u_char *enaddr; | |
6013a59e | 462 | { |
7779e59b SL |
463 | |
464 | enpcopy(enaddr, addr->enp_addr.e_baseaddr.ea_addr, | |
465 | sizeof (struct ether_addr)); | |
bc2cef1e | 466 | enpinit(unit); |
7779e59b SL |
467 | enpgetaddr(unit, addr); |
468 | } | |
469 | ||
470 | enpgetaddr(unit, addr) | |
471 | int unit; | |
472 | struct enpdevice *addr; | |
473 | { | |
474 | struct enp_softc *es = &enp_softc[unit]; | |
475 | ||
476 | enpcopy(addr->enp_addr.e_baseaddr.ea_addr, es->es_addr, | |
477 | sizeof (struct ether_addr)); | |
478 | printf("enp%d: hardware address %s\n", | |
479 | unit, ether_sprintf(es->es_addr)); | |
6013a59e SL |
480 | } |
481 | ||
482 | /* | |
bc2cef1e | 483 | * Routines to synchronize enp and host. |
6013a59e | 484 | */ |
9d61b7ff | 485 | #ifdef notdef |
6013a59e | 486 | static |
bc2cef1e SL |
487 | ringinit(rp, size) |
488 | register RING *rp; | |
6013a59e | 489 | { |
6013a59e SL |
490 | |
491 | rp->r_rdidx = rp->r_wrtidx = 0; | |
492 | rp->r_size = size; | |
493 | } | |
494 | ||
495 | static | |
9d61b7ff | 496 | ringfull(rp) |
bc2cef1e | 497 | register RING *rp; |
6013a59e | 498 | { |
9d61b7ff | 499 | register short idx; |
bc2cef1e | 500 | |
9d61b7ff SL |
501 | idx = (rp->r_wrtidx + 1) & (rp->r_size-1); |
502 | return (idx == rp->r_rdidx); | |
6013a59e SL |
503 | } |
504 | ||
505 | static | |
9d61b7ff | 506 | fir(rp) |
bc2cef1e | 507 | register RING *rp; |
6013a59e | 508 | { |
6013a59e | 509 | |
9d61b7ff SL |
510 | return (rp->r_rdidx != rp->r_wrtidx ? rp->r_slot[rp->r_rdidx] : 0); |
511 | } | |
512 | #endif | |
513 | ||
514 | static | |
515 | ringempty(rp) | |
516 | register RING *rp; | |
517 | { | |
518 | ||
519 | return (rp->r_rdidx == rp->r_wrtidx); | |
6013a59e SL |
520 | } |
521 | ||
522 | static | |
bc2cef1e SL |
523 | ringput(rp, v) |
524 | register RING *rp; | |
9d61b7ff | 525 | BCB *v; |
6013a59e SL |
526 | { |
527 | register int idx; | |
6013a59e SL |
528 | |
529 | idx = (rp->r_wrtidx + 1) & (rp->r_size-1); | |
bc2cef1e | 530 | if (idx != rp->r_rdidx) { |
7779e59b | 531 | ENPSETLONG(&rp->r_slot[rp->r_wrtidx], v); |
6013a59e | 532 | rp->r_wrtidx = idx; |
bc2cef1e | 533 | if ((idx -= rp->r_rdidx) < 0) |
6013a59e | 534 | idx += rp->r_size; |
bc2cef1e | 535 | return (idx); /* num ring entries */ |
6013a59e | 536 | } |
bc2cef1e | 537 | return (0); |
6013a59e SL |
538 | } |
539 | ||
540 | static | |
bc2cef1e SL |
541 | ringget(rp) |
542 | register RING *rp; | |
6013a59e SL |
543 | { |
544 | register int i = 0; | |
bc2cef1e SL |
545 | |
546 | if (rp->r_rdidx != rp->r_wrtidx) { | |
7779e59b | 547 | i = ENPGETLONG(&rp->r_slot[rp->r_rdidx]); |
6013a59e SL |
548 | rp->r_rdidx = (++rp->r_rdidx) & (rp->r_size-1); |
549 | } | |
bc2cef1e | 550 | return (i); |
6013a59e SL |
551 | } |
552 | ||
bc2cef1e SL |
553 | /* |
554 | * ENP Ram device. | |
555 | */ | |
556 | enpr_open(dev) | |
557 | dev_t dev; | |
6013a59e | 558 | { |
bc2cef1e SL |
559 | register int unit = ENPUNIT(dev); |
560 | struct vba_device *ui; | |
561 | struct enpdevice *addr; | |
6013a59e | 562 | |
bc2cef1e SL |
563 | if (unit >= NENP || (ui = enpinfo[unit]) == 0 || ui->ui_alive == 0 || |
564 | (addr = (struct enpdevice *)ui->ui_addr) == 0) | |
565 | return (ENODEV); | |
566 | if (addr->enp_state != S_ENPRESET) | |
567 | return (EACCES); /* enp is not in reset state, don't open */ | |
568 | return (0); | |
6013a59e SL |
569 | } |
570 | ||
9d61b7ff | 571 | /*ARGSUSED*/ |
bc2cef1e SL |
572 | enpr_close(dev) |
573 | dev_t dev; | |
6013a59e | 574 | { |
6013a59e | 575 | |
bc2cef1e | 576 | return (0); |
6013a59e SL |
577 | } |
578 | ||
bc2cef1e SL |
579 | enpr_read(dev, uio) |
580 | dev_t dev; | |
581 | register struct uio *uio; | |
6013a59e | 582 | { |
bc2cef1e SL |
583 | register struct iovec *iov; |
584 | struct enpdevice *addr; | |
6013a59e | 585 | |
bc2cef1e SL |
586 | if (uio->uio_offset > RAM_SIZE) |
587 | return (ENODEV); | |
9d61b7ff | 588 | iov = uio->uio_iov; |
bc2cef1e SL |
589 | if (uio->uio_offset + iov->iov_len > RAM_SIZE) |
590 | iov->iov_len = RAM_SIZE - uio->uio_offset; | |
591 | addr = (struct enpdevice *)enpinfo[ENPUNIT(dev)]->ui_addr; | |
7779e59b SL |
592 | if (useracc(iov->iov_base, (unsigned)iov->iov_len, 0) == 0) |
593 | return (EFAULT); | |
9d61b7ff SL |
594 | enpcopy((u_char *)&addr->enp_ram[uio->uio_offset], |
595 | (u_char *)iov->iov_base, (u_int)iov->iov_len); | |
bc2cef1e SL |
596 | uio->uio_resid -= iov->iov_len; |
597 | iov->iov_len = 0; | |
598 | return (0); | |
6013a59e SL |
599 | } |
600 | ||
bc2cef1e SL |
601 | enpr_write(dev, uio) |
602 | dev_t dev; | |
603 | register struct uio *uio; | |
604 | { | |
605 | register struct enpdevice *addr; | |
606 | register struct iovec *iov; | |
6013a59e | 607 | |
bc2cef1e SL |
608 | addr = (struct enpdevice *)enpinfo[ENPUNIT(dev)]->ui_addr; |
609 | iov = uio->uio_iov; | |
610 | if (uio->uio_offset > RAM_SIZE) | |
611 | return (ENODEV); | |
612 | if (uio->uio_offset + iov->iov_len > RAM_SIZE) | |
613 | iov->iov_len = RAM_SIZE - uio->uio_offset; | |
7779e59b SL |
614 | if (useracc(iov->iov_base, (unsigned)iov->iov_len, 1) == 0) |
615 | return (EFAULT); | |
9d61b7ff SL |
616 | enpcopy((u_char *)iov->iov_base, |
617 | (u_char *)&addr->enp_ram[uio->uio_offset], (u_int)iov->iov_len); | |
bc2cef1e | 618 | uio->uio_resid -= iov->iov_len; |
9bd54d0d | 619 | uio->uio_offset += iov->iov_len; |
bc2cef1e SL |
620 | iov->iov_len = 0; |
621 | return (0); | |
622 | } | |
623 | ||
9d61b7ff | 624 | /*ARGSUSED*/ |
bc2cef1e SL |
625 | enpr_ioctl(dev, cmd, data) |
626 | dev_t dev; | |
627 | caddr_t data; | |
6013a59e | 628 | { |
bc2cef1e | 629 | register unit = ENPUNIT(dev); |
7779e59b | 630 | struct enpdevice *addr; |
6013a59e | 631 | |
bc2cef1e SL |
632 | addr = (struct enpdevice *)enpinfo[unit]->ui_addr; |
633 | switch(cmd) { | |
634 | ||
635 | case ENPIOGO: | |
7779e59b | 636 | ENPSETLONG(&addr->enp_base, addr); |
bc2cef1e SL |
637 | addr->enp_intrvec = enp_softc[unit].es_ivec; |
638 | ENP_GO(addr, ENPSTART); | |
639 | DELAY(200000); | |
640 | enpinit(unit); | |
7779e59b SL |
641 | /* |
642 | * Fetch Ethernet address after link level | |
643 | * is booted (firmware copies manufacturer's | |
644 | * address from on-board ROM). | |
645 | */ | |
646 | enpgetaddr(unit, addr); | |
647 | addr->enp_state = S_ENPRUN; | |
bc2cef1e SL |
648 | break; |
649 | ||
650 | case ENPIORESET: | |
651 | RESET_ENP(addr); | |
7779e59b | 652 | addr->enp_state = S_ENPRESET; |
bc2cef1e SL |
653 | DELAY(100000); |
654 | break; | |
7779e59b SL |
655 | default: |
656 | return (EINVAL); | |
6013a59e | 657 | } |
bc2cef1e | 658 | return (0); |
6013a59e SL |
659 | } |
660 | #endif |