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15637ed4 RG |
1 | #include "ec.h" |
2 | #if NEC > 0 | |
3 | /*- | |
4 | * Copyright (c) 1990 The Regents of the University of California. | |
5 | * All rights reserved. | |
6 | * | |
7 | * This code is derived from software contributed to Berkeley by | |
8 | * Tim L. Tucker. | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
18 | * 3. All advertising materials mentioning features or use of this software | |
19 | * must display the following acknowledgement: | |
20 | * This product includes software developed by the University of | |
21 | * California, Berkeley and its contributors. | |
22 | * 4. Neither the name of the University nor the names of its contributors | |
23 | * may be used to endorse or promote products derived from this software | |
24 | * without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
36 | * SUCH DAMAGE. | |
37 | * | |
38 | */ | |
39 | /* | |
40 | * A driver for the 3Com 3C503 (Etherlink II) ethernet adaptor. | |
41 | * | |
42 | * Written by Herb Peyerl (hpeyerl@novatel.cuc.ab.ca) on 04/25/92. | |
43 | * (This is my first ever device driver and I couldn't have done | |
44 | * it without the consumption of many "Brock Gummy Bears" so a | |
45 | * big thanx to the "Brock Candy Company" of Chattanooga TN) | |
46 | * | |
47 | * This driver uses the Western Digital 8003 driver for a template | |
48 | * since the two cards use the DP8390 chip by National. Everything | |
49 | * is fairly similar except that the nic on the wd8003 appears to | |
50 | * to see shared memory at 0x0000 and on the 3com, the nic sees it | |
51 | * at 0x2000. Also, the 3c503 has it's own ASIC for controlling | |
52 | * things like the IRQ level in software and whether to use the | |
53 | * onboard xceiver or not. Since the Clarkson drivers do a very | |
54 | * good rendition of a 3c503, I also scavenged a lot of ideas from | |
55 | * there. | |
56 | * | |
57 | * Kludges: | |
58 | * Since I couldn't really think of any non-creative way (other than | |
59 | * using a #define) of configuring the board to use the onboard xceiver, | |
60 | * I kludged the isa_device->unit to contain this information. Simply | |
61 | * put, if bit-7 of isa_device->unit is set (>127) then the driver | |
62 | * configures that unit to onboard-xceiver (BNC) and if <128 it assumes | |
63 | * AUI. ec_attach informs the user of this on bootup. Also, ec_probe | |
64 | * repairs this bit after obtaining it's information since I didn't know | |
65 | * what else within the depths of the kernel would freak out if I left it. | |
66 | */ | |
67 | #include "param.h" | |
68 | #include "mbuf.h" | |
69 | #include "socket.h" | |
70 | #include "ioctl.h" | |
71 | #include "errno.h" | |
72 | #include "syslog.h" | |
73 | #include "net/if.h" | |
74 | #include "net/netisr.h" | |
75 | #ifdef INET | |
76 | #include "netinet/in.h" | |
77 | #include "netinet/in_systm.h" | |
78 | #include "netinet/in_var.h" | |
79 | #include "netinet/ip.h" | |
80 | #include "netinet/if_ether.h" | |
81 | #endif | |
82 | #ifdef NS | |
83 | #include "netns/ns.h" | |
84 | #include "netns/ns_if.h" | |
85 | #endif | |
86 | #include "i386/isa/isa_device.h" | |
87 | #include "i386/isa/if_ec.h" | |
88 | ||
89 | /* | |
90 | * Ethernet software status per interface. | |
91 | * | |
92 | * Each interface is referenced by a network interface structure, | |
93 | * qe_if, which the routing code uses to locate the interface. | |
94 | * This structure contains the output queue for the interface, its address, ... | |
95 | */ | |
96 | struct ec_softc { | |
97 | struct arpcom ec_ac; /* Ethernet common part */ | |
98 | #define ec_if ec_ac.ac_if /* network-visible interface */ | |
99 | #define ec_addr ec_ac.ac_enaddr /* hardware Ethernet address */ | |
100 | ||
101 | u_char ec_flags; /* software state */ | |
102 | #define EC_RUNNING 0x01 | |
103 | #define EC_TXBUSY 0x02 | |
104 | ||
105 | u_char ec_type; /* interface type code */ | |
106 | u_short ec_vector; /* interrupt vector */ | |
107 | short ec_io_ctl_addr; /* i/o bus address, control */ | |
108 | short ec_io_nic_addr; /* i/o bus address, DS8390 */ | |
109 | short thick_or_thin; /* thick=0;thin=2 */ | |
110 | ||
111 | caddr_t ec_vmem_addr; /* card RAM virtual memory base */ | |
112 | u_long ec_vmem_size; /* card RAM bytes */ | |
113 | caddr_t ec_vmem_ring; /* receive ring RAM vaddress */ | |
114 | caddr_t ec_vmem_end; /* receive ring RAM end */ | |
115 | } ec_softc[NEC]; | |
116 | ||
117 | #define PAGE0 outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE0); | |
118 | #define PAGE1 outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE1); | |
119 | static Bdry; | |
120 | ||
121 | int ether_output(), | |
122 | ecprobe(), | |
123 | ecattach(), | |
124 | ecintr(), | |
125 | ec_init(), | |
126 | ec_ioctl(), | |
127 | ec_reset(), | |
128 | ec_watchdog(), | |
129 | ec_start_output(); | |
130 | ||
131 | struct isa_driver ecdriver = { | |
132 | ecprobe, | |
133 | ecattach, | |
134 | "ec", | |
135 | }; | |
136 | ||
137 | ecprobe(is) | |
138 | struct isa_device *is; | |
139 | { | |
140 | register struct ec_softc *sc = &ec_softc[is->id_unit&127]; | |
141 | int i, sum; | |
142 | /* | |
143 | * Set up the softc structure with card specific info. | |
144 | * The 3Com asic is at base+0x400 | |
145 | */ | |
146 | sc->ec_io_ctl_addr = is->id_iobase + 0x400; | |
147 | sc->ec_io_nic_addr = is->id_iobase; | |
148 | sc->ec_vector = is->id_irq; | |
149 | sc->ec_vmem_addr = (caddr_t)is->id_maddr; | |
150 | sc->ec_vmem_size = is->id_msize; | |
151 | sc->ec_vmem_ring = sc->ec_vmem_addr + (EC_PAGE_SIZE * EC_TXBUF_SIZE); | |
152 | sc->ec_vmem_end = sc->ec_vmem_addr + is->id_msize; | |
153 | /* | |
154 | * Now we get the MAC address. Assume thin ethernet unless told otherwise later. | |
155 | */ | |
156 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, ECNTRL_RESET|2); /* Toggle reset bit on*/ | |
157 | DELAY(100); | |
158 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); /* Toggle reset bit off */ | |
159 | DELAY(100); | |
160 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, ECNTRL_SAPROM|2); /* Map SA_PROM */ | |
161 | for (i=0;i<ETHER_ADDR_LEN; ++i) | |
162 | sc->ec_addr[i] = inb(sc->ec_io_nic_addr + i); | |
163 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); /* Disable SA_PROM */ | |
164 | outb(sc->ec_io_ctl_addr + E33G_GACFR, EGACFR_IRQOFF); /* tcm, rsel, mbs0, nim */ | |
165 | /* | |
166 | * Stop the chip just in case. | |
167 | */ | |
168 | DELAY(1000); | |
169 | PAGE0 | |
170 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_STOP); | |
171 | DELAY(1000); | |
172 | ||
173 | /* Check cmd reg and fail if not right */ | |
174 | if ((i=inb(sc->ec_io_nic_addr + EN_CCMD)) != (ENC_NODMA|ENC_STOP)) | |
175 | return(0); | |
176 | ||
177 | /* | |
178 | * Test the shared memory. | |
179 | */ | |
180 | for(i = 0 ; i < sc->ec_vmem_size ; ++i) | |
181 | sc->ec_vmem_addr[i] = 0x0; | |
182 | for(sum=0, i=0; i<sc->ec_vmem_size; ++i) | |
183 | sum += sc->ec_vmem_addr[i]; | |
184 | if(sum) | |
185 | { | |
186 | printf("ec%d: shared memory error (device conflict?)\n", | |
187 | is->id_unit); | |
188 | return(0); | |
189 | } | |
190 | /* | |
191 | * All done. | |
192 | */ | |
193 | return(1); | |
194 | } | |
195 | ||
196 | ecattach(is) | |
197 | struct isa_device *is; | |
198 | { | |
199 | register struct ec_softc *sc = &ec_softc[is->id_unit]; | |
200 | register struct ifnet *ifp = &sc->ec_if; | |
201 | ||
202 | /** | |
203 | ** Initialize the ASIC in same order as Clarkson driver. | |
204 | **/ | |
205 | ||
206 | ||
207 | /* | |
208 | * Point vector pointer registers off into boonies. | |
209 | */ | |
210 | outb(sc->ec_io_ctl_addr + E33G_VP2, 0xff); | |
211 | outb(sc->ec_io_ctl_addr + E33G_VP1, 0xff); | |
212 | outb(sc->ec_io_ctl_addr + E33G_VP0, 0x0); | |
213 | /* | |
214 | * Set up control of shared memory, buffer ring, etc. | |
215 | */ | |
216 | outb(sc->ec_io_ctl_addr + E33G_STARTPG, EC_RXBUF_OFFSET); | |
217 | outb(sc->ec_io_ctl_addr + E33G_STOPPG, EC_RXBUF_END); | |
218 | /* | |
219 | * Set up the IRQ and NBURST on the board. | |
220 | * ( Not sure why we set up NBURST since we don't use DMA.) | |
221 | * | |
222 | * Normally we would is->id_irq<<2 but IRQ2 is defined as 0x200 | |
223 | * in icu.h so it's a special case. | |
224 | */ | |
225 | if(is->id_irq == 0x200) | |
226 | outb(sc->ec_io_ctl_addr + E33G_IDCFR, 0x10); | |
227 | else | |
228 | outb(sc->ec_io_ctl_addr + E33G_IDCFR, is->id_irq << 2); | |
229 | outb(sc->ec_io_ctl_addr + E33G_NBURST, 0x08); /* Set Burst to 8 */ | |
230 | outb(sc->ec_io_ctl_addr + E33G_DMAAH, 0x20); | |
231 | outb(sc->ec_io_ctl_addr + E33G_DMAAL, 0x0); | |
232 | /* | |
233 | * Fill in the ifnet structure. | |
234 | */ | |
235 | ifp->if_unit = is->id_unit; | |
236 | ifp->if_name = "ec" ; | |
237 | ifp->if_mtu = ETHERMTU; | |
238 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; | |
239 | ifp->if_init = ec_init; | |
240 | ifp->if_output = ether_output; | |
241 | ifp->if_start = ec_start_output; | |
242 | ifp->if_ioctl = ec_ioctl; | |
243 | ifp->if_reset = ec_reset; | |
244 | ifp->if_watchdog = ec_watchdog; | |
245 | /* | |
246 | * Attach the interface to something. Have to figure this out later. | |
247 | */ | |
248 | if_attach(ifp); | |
249 | /* | |
250 | * Weeee.. We get to tell people we exist... | |
251 | */ | |
252 | printf(" address %s", ether_sprintf(sc->ec_addr)); | |
253 | } | |
254 | ||
255 | ec_init(unit) | |
256 | int unit; | |
257 | { | |
258 | register struct ec_softc *sc = &ec_softc[unit]; | |
259 | register struct ifnet *ifp = &sc->ec_if; | |
260 | int i, s; | |
261 | u_short ax, cx; | |
262 | ||
263 | Bdry=0; | |
264 | printf("ecinit"); | |
265 | /* | |
266 | * Address not known. | |
267 | */ | |
268 | if(ifp->if_addrlist == (struct ifaddr *) 0) | |
269 | return; | |
270 | ||
271 | /* | |
272 | * XXX (untested) | |
273 | * select thick (e.g. AUI connector) if LLC0 bit is set | |
274 | */ | |
275 | if (ifp->if_flags & IFF_LLC0) | |
276 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 0); | |
277 | else | |
278 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); | |
279 | ||
280 | /* | |
281 | * Set up the 8390 chip. | |
282 | * (Use sequence recommended by 3Com. ) | |
283 | */ | |
284 | s=splhigh(); | |
285 | PAGE0 | |
286 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE0|ENC_STOP); | |
287 | outb(sc->ec_io_nic_addr + EN0_DCFG, ENDCFG_BM8); | |
288 | outb(sc->ec_io_nic_addr + EN0_RCNTLO, 0x0); | |
289 | outb(sc->ec_io_nic_addr + EN0_RCNTHI, 0x0); | |
290 | outb(sc->ec_io_nic_addr + EN0_RXCR, ENRXCR_MON ); | |
291 | outb(sc->ec_io_nic_addr + EN0_TXCR, 0x02); | |
292 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, EC_RXBUF_OFFSET); | |
293 | outb(sc->ec_io_nic_addr + EN0_TPSR, 0x20); | |
294 | outb(sc->ec_io_nic_addr + EN0_STARTPG, EC_RXBUF_OFFSET); | |
295 | outb(sc->ec_io_nic_addr + EN0_STOPPG, EC_RXBUF_END); | |
296 | outb(sc->ec_io_nic_addr + EN0_ISR, 0xff); | |
297 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x3f); | |
298 | /* | |
299 | * Copy Ethernet address from SA_PROM into 8390 chip registers. | |
300 | */ | |
301 | PAGE1 | |
302 | for(i=0;i<6;i++) | |
303 | outb(sc->ec_io_nic_addr + EN1_PHYS+i, sc->ec_addr[i]); | |
304 | /* | |
305 | * Set multicast filter mask bits in case promiscuous rcv wanted (???) | |
306 | * (set to 0xff as in if_we.c) | |
307 | */ | |
308 | for(i=0;i<8;i++) | |
309 | outb(sc->ec_io_nic_addr + EN1_MULT+i, 0xff); | |
310 | /* | |
311 | * Set current shared page for RX to work on. | |
312 | */ | |
313 | outb(sc->ec_io_nic_addr + EN1_CURPAG, EC_RXBUF_OFFSET); | |
314 | /* | |
315 | * Start the 8390. Clear Interrupt Status reg, and accept Broadcast | |
316 | * packets. | |
317 | */ | |
318 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_START|ENC_PAGE0|ENC_NODMA); | |
319 | outb(sc->ec_io_nic_addr + EN0_ISR, 0xff); | |
320 | outb(sc->ec_io_nic_addr + EN0_TXCR, 0x0); | |
321 | outb(sc->ec_io_nic_addr + EN0_RXCR, ENRXCR_BCST); | |
322 | /* | |
323 | * Take interface out of reset, program the vector, | |
324 | * enable interrupts, and tell the world we are up. | |
325 | */ | |
326 | ifp->if_flags |= IFF_RUNNING; | |
327 | outb(sc->ec_io_ctl_addr + E33G_GACFR, EGACFR_NORM); /* tcm, rsel, mbs0 */ | |
328 | (void) splx(s); | |
329 | sc->ec_flags &= ~EC_TXBUSY; | |
330 | ec_start_output(ifp); | |
331 | } | |
332 | ||
333 | ec_start_output(ifp) | |
334 | struct ifnet *ifp; | |
335 | { | |
336 | register struct ec_softc *sc = &ec_softc[ifp->if_unit]; | |
337 | struct mbuf *m0, *m; | |
338 | register caddr_t buffer; | |
339 | int len, s; | |
340 | int ec_cmd_reg; | |
341 | ||
342 | /* | |
343 | * The DS8390 only has one transmit buffer, if it is busy we | |
344 | * must wait until the transmit interrupt completes. | |
345 | */ | |
346 | s=splhigh(); | |
347 | if(sc->ec_flags & EC_TXBUSY) | |
348 | { | |
349 | (void) splx(s); | |
350 | return; | |
351 | } | |
352 | IF_DEQUEUE(&sc->ec_if.if_snd, m); | |
353 | if(m == 0) | |
354 | { | |
355 | (void) splx(s); | |
356 | return; | |
357 | } | |
358 | sc->ec_flags |= EC_TXBUSY; | |
359 | (void) splx(s); | |
360 | ||
361 | /* | |
362 | * Copy the mbuf chain into the transmit buffer | |
363 | */ | |
364 | buffer = sc->ec_vmem_addr; | |
365 | len = 0; | |
366 | for(m0 = m; m!= 0; m = m->m_next) | |
367 | { | |
368 | bcopy(mtod(m, caddr_t), buffer, m->m_len); | |
369 | buffer += m->m_len; | |
370 | len += m->m_len; | |
371 | } | |
372 | m_freem(m0); | |
373 | ||
374 | /* | |
375 | * Init transmit length registers and set transmit start flag. | |
376 | */ | |
377 | s=splhigh(); | |
378 | len = MAX(len, ETHER_MIN_LEN); | |
379 | PAGE0 | |
380 | outb(sc->ec_io_nic_addr + EN0_TCNTLO, len & 0xff); | |
381 | outb(sc->ec_io_nic_addr + EN0_TCNTHI, len >> 8); | |
382 | ec_cmd_reg = inb(sc->ec_io_nic_addr + EN_CCMD); | |
383 | outb(sc->ec_io_nic_addr + EN_CCMD, ec_cmd_reg|ENC_TRANS); | |
384 | (void) splx(s); | |
385 | } | |
386 | ||
387 | int ec_cmd_reg, ec_sts_reg; | |
388 | /* | |
389 | * Interrupt handler. | |
390 | */ | |
391 | ecintr(unit) | |
392 | int unit; | |
393 | { | |
394 | register struct ec_softc *sc = &ec_softc[unit]; | |
395 | ||
396 | unit = 0; | |
397 | ||
398 | /* | |
399 | * Get current command register and interrupt status. | |
400 | * Turn off interrupts while we take care of things. | |
401 | */ | |
402 | ec_cmd_reg = inb(sc->ec_io_nic_addr + EN_CCMD); | |
403 | PAGE0 | |
404 | ec_sts_reg = inb(sc->ec_io_nic_addr + EN0_ISR); | |
405 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x0); | |
406 | loop: | |
407 | outb(sc->ec_io_nic_addr + EN0_ISR, ec_sts_reg); | |
408 | /* | |
409 | * have we lost ourselves somewhere? | |
410 | */ | |
411 | if (ec_sts_reg == 0xff) | |
412 | ec_watchdog(unit); | |
413 | /* | |
414 | * Transmit error | |
415 | */ | |
416 | if(ec_sts_reg & ENISR_TX_ERR) | |
417 | { | |
418 | sc->ec_if.if_collisions += inb(sc->ec_io_nic_addr + EN0_TCNTLO); | |
419 | ++sc->ec_if.if_oerrors; | |
420 | } | |
421 | /* | |
422 | * Receive Error | |
423 | */ | |
424 | if(ec_sts_reg & ENISR_RX_ERR) | |
425 | { | |
426 | (void) inb(sc->ec_io_nic_addr + 0xD); | |
427 | (void) inb(sc->ec_io_nic_addr + 0xE); | |
428 | (void) inb(sc->ec_io_nic_addr + 0xF); | |
429 | ++sc->ec_if.if_ierrors; | |
430 | } | |
431 | /* | |
432 | * Normal transmit complete. | |
433 | */ | |
434 | if(ec_sts_reg&ENISR_TX || ec_sts_reg&ENISR_TX_ERR) | |
435 | ectint(unit); | |
436 | /* | |
437 | * Normal receive notification | |
438 | */ | |
439 | if(ec_sts_reg&(ENISR_RX|ENISR_RX_ERR)) | |
440 | ecrint(unit); | |
441 | ||
442 | /* | |
443 | * Try to start transmit | |
444 | */ | |
445 | ec_start_output(&sc->ec_if); | |
446 | /* | |
447 | * Reenable onboard interrupts. | |
448 | */ | |
449 | /*PAGE0*/ | |
450 | outb(sc->ec_io_nic_addr + EN_CCMD, ec_cmd_reg); | |
451 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x3f); | |
452 | if(ec_sts_reg=inb(sc->ec_io_nic_addr + EN0_ISR)) | |
453 | goto loop; | |
454 | } | |
455 | ||
456 | /* | |
457 | * Transmit interrupt | |
458 | */ | |
459 | ectint(unit) | |
460 | int unit; | |
461 | { | |
462 | register struct ec_softc *sc = &ec_softc[unit]; | |
463 | /* | |
464 | * Do some statistics. | |
465 | */ | |
466 | PAGE0 | |
467 | sc->ec_flags &= ~EC_TXBUSY; | |
468 | sc->ec_if.if_timer = 0; | |
469 | ++sc->ec_if.if_opackets; | |
470 | sc->ec_if.if_collisions += inb(sc->ec_io_nic_addr + EN0_TCNTLO); | |
471 | } | |
472 | ||
473 | /* | |
474 | * Receive interrupt. | |
475 | * (This gave me the most trouble so excuse the mess.) | |
476 | */ | |
477 | ecrint(unit) | |
478 | int unit; | |
479 | { | |
480 | register struct ec_softc *sc = &ec_softc[unit]; | |
481 | u_char bnry, curr; | |
482 | int len; | |
483 | struct ec_ring *ecr; | |
484 | ||
485 | /* | |
486 | * Traverse the receive ring looking for packets to pass back. | |
487 | * The search is complete when we find a descriptor not in use. | |
488 | */ | |
489 | PAGE0 | |
490 | bnry = inb(sc->ec_io_nic_addr + EN0_BOUNDARY); | |
491 | PAGE1 | |
492 | curr = inb(sc->ec_io_nic_addr + EN1_CURPAG); | |
493 | if(Bdry) | |
494 | bnry =Bdry; | |
495 | ||
496 | while (bnry != curr) | |
497 | { | |
498 | /* get pointer to this buffer header structure */ | |
499 | ecr = (struct ec_ring *)(sc->ec_vmem_addr + ((bnry-EC_VMEM_OFFSET) << 8)); | |
500 | ||
501 | /* count includes CRC */ | |
502 | len = ecr->ec_count - 4; | |
503 | /*if (len > 30 && len <= ETHERMTU+100) */ | |
504 | ecread(sc, (caddr_t)(ecr + 1), len); | |
505 | /*else printf("reject:%x bnry:%x curr:%x", len, bnry, curr);*/ | |
506 | outofbufs: | |
507 | PAGE0 | |
508 | /* advance on chip Boundry register */ | |
509 | if((caddr_t) ecr + EC_PAGE_SIZE - 1 > sc->ec_vmem_end) { | |
510 | bnry = EC_RXBUF_OFFSET; | |
511 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, | |
512 | (sc->ec_vmem_size / EC_PAGE_SIZE) - 1 - EC_VMEM_OFFSET); | |
513 | } else { | |
514 | if (len > 30 && len <= ETHERMTU+100) | |
515 | bnry = ecr->ec_next_packet; | |
516 | else bnry = curr; | |
517 | ||
518 | /* watch out for NIC overflow, reset Boundry if invalid */ | |
519 | if ((bnry - 1) < EC_RXBUF_OFFSET) { | |
520 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, | |
521 | (sc->ec_vmem_size / EC_PAGE_SIZE) - 1 - EC_VMEM_OFFSET); | |
522 | bnry = EC_RXBUF_OFFSET; | |
523 | } else | |
524 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, bnry-1); | |
525 | } | |
526 | ||
527 | /* refresh our copy of CURR */ | |
528 | PAGE1 | |
529 | curr = inb(sc->ec_io_nic_addr + EN1_CURPAG); | |
530 | } | |
531 | Bdry = bnry; | |
532 | PAGE0 | |
533 | } | |
534 | ||
535 | #define ecdataaddr(sc, eh, off, type) \ | |
536 | ((type) ((caddr_t)((eh)+1)+(off) >= (sc)->ec_vmem_end) ? \ | |
537 | (((caddr_t)((eh)+1)+(off))) - (sc)->ec_vmem_end \ | |
538 | + (sc)->ec_vmem_ring: \ | |
539 | ((caddr_t)((eh)+1)+(off))) | |
540 | ||
541 | ecread(sc, buf, len) | |
542 | register struct ec_softc *sc; | |
543 | char *buf; | |
544 | int len; | |
545 | { | |
546 | register struct ether_header *eh; | |
547 | struct mbuf *m, *ecget(); | |
548 | int off, resid; | |
549 | ||
550 | /* | |
551 | * Deal with trailer protocol: if type is trailer type | |
552 | * get true type from first 16-bit word past data. | |
553 | * Remember that type was trailer by setting off. | |
554 | */ | |
555 | eh = (struct ether_header *)buf; | |
556 | eh->ether_type = ntohs((u_short)eh->ether_type); | |
557 | if (eh->ether_type >= ETHERTYPE_TRAIL && | |
558 | eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
559 | off = (eh->ether_type - ETHERTYPE_TRAIL) * 512; | |
560 | if (off >= ETHERMTU) return; /* sanity */ | |
561 | eh->ether_type = ntohs(*ecdataaddr(sc, eh, off, u_short *)); | |
562 | resid = ntohs(*(ecdataaddr(sc, eh, off+2, u_short *))); | |
563 | if (off + resid > len) return; /* sanity */ | |
564 | len = off + resid; | |
565 | } else off = 0; | |
566 | ||
567 | len -= sizeof(struct ether_header); | |
568 | if (len <= 0) return; | |
569 | ||
570 | /* | |
571 | * Pull packet off interface. Off is nonzero if packet | |
572 | * has trailing header; neget will then force this header | |
573 | * information to be at the front, but we still have to drop | |
574 | * the type and length which are at the front of any trailer data. | |
575 | */ | |
576 | m = ecget(buf, len, off, &sc->ec_if, sc); | |
577 | if (m == 0) return; | |
578 | ether_input(&sc->ec_if, eh, m); | |
579 | } | |
580 | ec_ioctl(ifp, cmd, data) | |
581 | register struct ifnet *ifp; | |
582 | int cmd; | |
583 | caddr_t data; | |
584 | { | |
585 | register struct ifaddr *ifa = (struct ifaddr *)data; | |
586 | struct ec_softc *sc = &ec_softc[ifp->if_unit]; | |
587 | struct ifreq *ifr = (struct ifreq *)data; | |
588 | int s=splimp(), error=0; | |
589 | switch(cmd){ | |
590 | case SIOCSIFADDR: | |
591 | ifp->if_flags |= IFF_UP; | |
592 | switch (ifa->ifa_addr->sa_family) { | |
593 | #ifdef INET | |
594 | case AF_INET: | |
595 | ec_init(ifp->if_unit); /* before arpwhohas */ | |
596 | ((struct arpcom *)ifp)->ac_ipaddr = | |
597 | IA_SIN(ifa)->sin_addr; | |
598 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
599 | break; | |
600 | #endif | |
601 | #ifdef NS | |
602 | case AF_NS: | |
603 | { | |
604 | register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); | |
605 | ||
606 | if (ns_nullhost(*ina)) | |
607 | ina->x_host = *(union ns_host *)(sc->ns_addr); | |
608 | else { | |
609 | /* | |
610 | * The manual says we can't change the address | |
611 | * while the receiver is armed, | |
612 | * so reset everything | |
613 | */ | |
614 | ifp->if_flags &= ~IFF_RUNNING; | |
615 | bcopy((caddr_t)ina->x_host.c_host, | |
616 | (caddr_t)sc->ns_addr, sizeof(sc->ns_addr)); | |
617 | } | |
618 | ec_init(ifp->if_unit); /* does ne_setaddr() */ | |
619 | break; | |
620 | } | |
621 | #endif | |
622 | default: | |
623 | ec_init(ifp->if_unit); | |
624 | break; | |
625 | } | |
626 | break; | |
627 | ||
628 | case SIOCSIFFLAGS: | |
629 | if ((ifp->if_flags & IFF_UP) == 0 && | |
630 | ifp->if_flags & IFF_RUNNING) { | |
631 | ifp->if_flags &= ~IFF_RUNNING; | |
632 | ec_stop(ifp->if_unit); | |
633 | } else if (ifp->if_flags & IFF_UP && | |
634 | (ifp->if_flags & IFF_RUNNING) == 0) | |
635 | ec_init(ifp->if_unit); | |
636 | break; | |
637 | ||
638 | #ifdef notdef | |
639 | case SIOCGHWADDR: | |
640 | bcopy((caddr_t)sc->sc_addr, (caddr_t) &ifr->ifr_data, | |
641 | sizeof(sc->sc_addr)); | |
642 | break; | |
643 | #endif | |
644 | ||
645 | default: | |
646 | error = EINVAL; | |
647 | } | |
648 | splx(s); | |
649 | return (error); | |
650 | } | |
651 | ||
652 | ec_reset(unit) | |
653 | int unit; | |
654 | { | |
655 | if(unit >= NEC) | |
656 | return; | |
657 | printf("ec%d: reset\n", unit); | |
658 | ec_init(unit); | |
659 | } | |
660 | ||
661 | ec_watchdog(unit) | |
662 | int unit; | |
663 | { | |
664 | log(LOG_WARNING, "ec%d: soft reset\n", unit); | |
665 | ec_stop(unit); | |
666 | ec_init(unit); | |
667 | } | |
668 | ||
669 | ec_stop(unit) | |
670 | int unit; | |
671 | { | |
672 | register struct ec_softc *sc = &ec_softc[unit]; | |
673 | int s; | |
674 | ||
675 | s=splimp(); | |
676 | PAGE0 | |
677 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_STOP); | |
678 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x0); | |
679 | sc->ec_flags &= ~EC_RUNNING; | |
680 | /* | |
681 | * Shutdown the 8390. | |
682 | */ | |
683 | (void) splx(s); | |
684 | } | |
685 | ||
686 | /* | |
687 | * Pull read data off a interface. | |
688 | * Len is length of data, with local net header stripped. | |
689 | * Off is non-zero if a trailer protocol was used, and | |
690 | * gives the offset of the trailer information. | |
691 | * We copy the trailer information and then all the normal | |
692 | * data into mbufs. When full cluster sized units are present | |
693 | * we copy into clusters. | |
694 | */ | |
695 | struct mbuf * | |
696 | ecget(buf, totlen, off0, ifp, sc) | |
697 | caddr_t buf; | |
698 | int totlen, off0; | |
699 | struct ifnet *ifp; | |
700 | struct ec_softc *sc; | |
701 | { | |
702 | struct mbuf *top, **mp, *m, *p; | |
703 | int off = off0, len; | |
704 | register caddr_t cp = buf; | |
705 | char *epkt; | |
706 | int tc =totlen; | |
707 | ||
708 | buf += sizeof(struct ether_header); | |
709 | cp = buf; | |
710 | epkt = cp + totlen; | |
711 | ||
712 | if (off) { | |
713 | cp += off + 2 * sizeof(u_short); | |
714 | totlen -= 2 * sizeof(u_short); | |
715 | } | |
716 | ||
717 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
718 | if (m == 0) | |
719 | return (0); | |
720 | m->m_pkthdr.rcvif = ifp; | |
721 | m->m_pkthdr.len = totlen; | |
722 | m->m_len = MHLEN; | |
723 | ||
724 | top = 0; | |
725 | mp = ⊤ | |
726 | while (totlen > 0) { | |
727 | if (top) { | |
728 | MGET(m, M_DONTWAIT, MT_DATA); | |
729 | if (m == 0) { | |
730 | m_freem(top); | |
731 | return (0); | |
732 | } | |
733 | m->m_len = MLEN; | |
734 | } | |
735 | len = min(totlen, epkt - cp); | |
736 | if (len >= MINCLSIZE) { | |
737 | MCLGET(m, M_DONTWAIT); | |
738 | if (m->m_flags & M_EXT) | |
739 | m->m_len = len = min(len, MCLBYTES); | |
740 | else | |
741 | len = m->m_len; | |
742 | } else { | |
743 | /* | |
744 | * Place initial small packet/header at end of mbuf. | |
745 | */ | |
746 | if (len < m->m_len) { | |
747 | if (top == 0 && len + max_linkhdr <= m->m_len) | |
748 | m->m_data += max_linkhdr; | |
749 | m->m_len = len; | |
750 | } else | |
751 | len = m->m_len; | |
752 | } | |
753 | ||
754 | totlen -= len; | |
755 | /* only do up to end of buffer */ | |
756 | if (cp+len > sc->ec_vmem_end) { | |
757 | unsigned toend = sc->ec_vmem_end - cp; | |
758 | ||
759 | bcopy(cp, mtod(m, caddr_t), toend); | |
760 | cp = sc->ec_vmem_ring; | |
761 | bcopy(cp, mtod(m, caddr_t)+toend, len - toend); | |
762 | cp += len - toend; | |
763 | epkt = cp + totlen; | |
764 | } else { | |
765 | bcopy(cp, mtod(m, caddr_t), (unsigned)len); | |
766 | cp += len; | |
767 | } | |
768 | *mp = m; | |
769 | mp = &m->m_next; | |
770 | if (cp == epkt) { | |
771 | cp = buf; | |
772 | epkt = cp + tc; | |
773 | } | |
774 | } | |
775 | return (top); | |
776 | } | |
777 | #endif /* NEC > 0 */ |