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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" | |
192b3b8a | 68 | #include "systm.h" |
15637ed4 RG |
69 | #include "mbuf.h" |
70 | #include "socket.h" | |
71 | #include "ioctl.h" | |
72 | #include "errno.h" | |
73 | #include "syslog.h" | |
74 | #include "net/if.h" | |
75 | #include "net/netisr.h" | |
76 | #ifdef INET | |
77 | #include "netinet/in.h" | |
78 | #include "netinet/in_systm.h" | |
79 | #include "netinet/in_var.h" | |
80 | #include "netinet/ip.h" | |
81 | #include "netinet/if_ether.h" | |
82 | #endif | |
83 | #ifdef NS | |
84 | #include "netns/ns.h" | |
85 | #include "netns/ns_if.h" | |
86 | #endif | |
87 | #include "i386/isa/isa_device.h" | |
88 | #include "i386/isa/if_ec.h" | |
89 | ||
90 | /* | |
91 | * Ethernet software status per interface. | |
92 | * | |
93 | * Each interface is referenced by a network interface structure, | |
94 | * qe_if, which the routing code uses to locate the interface. | |
95 | * This structure contains the output queue for the interface, its address, ... | |
96 | */ | |
97 | struct ec_softc { | |
98 | struct arpcom ec_ac; /* Ethernet common part */ | |
99 | #define ec_if ec_ac.ac_if /* network-visible interface */ | |
100 | #define ec_addr ec_ac.ac_enaddr /* hardware Ethernet address */ | |
101 | ||
102 | u_char ec_flags; /* software state */ | |
103 | #define EC_RUNNING 0x01 | |
104 | #define EC_TXBUSY 0x02 | |
105 | ||
106 | u_char ec_type; /* interface type code */ | |
107 | u_short ec_vector; /* interrupt vector */ | |
108 | short ec_io_ctl_addr; /* i/o bus address, control */ | |
109 | short ec_io_nic_addr; /* i/o bus address, DS8390 */ | |
110 | short thick_or_thin; /* thick=0;thin=2 */ | |
111 | ||
112 | caddr_t ec_vmem_addr; /* card RAM virtual memory base */ | |
113 | u_long ec_vmem_size; /* card RAM bytes */ | |
114 | caddr_t ec_vmem_ring; /* receive ring RAM vaddress */ | |
115 | caddr_t ec_vmem_end; /* receive ring RAM end */ | |
116 | } ec_softc[NEC]; | |
117 | ||
118 | #define PAGE0 outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE0); | |
119 | #define PAGE1 outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE1); | |
120 | static Bdry; | |
121 | ||
122 | int ether_output(), | |
123 | ecprobe(), | |
124 | ecattach(), | |
125 | ecintr(), | |
126 | ec_init(), | |
127 | ec_ioctl(), | |
128 | ec_reset(), | |
129 | ec_watchdog(), | |
130 | ec_start_output(); | |
131 | ||
132 | struct isa_driver ecdriver = { | |
133 | ecprobe, | |
134 | ecattach, | |
135 | "ec", | |
136 | }; | |
137 | ||
138 | ecprobe(is) | |
139 | struct isa_device *is; | |
140 | { | |
141 | register struct ec_softc *sc = &ec_softc[is->id_unit&127]; | |
142 | int i, sum; | |
143 | /* | |
144 | * Set up the softc structure with card specific info. | |
145 | * The 3Com asic is at base+0x400 | |
146 | */ | |
147 | sc->ec_io_ctl_addr = is->id_iobase + 0x400; | |
148 | sc->ec_io_nic_addr = is->id_iobase; | |
149 | sc->ec_vector = is->id_irq; | |
150 | sc->ec_vmem_addr = (caddr_t)is->id_maddr; | |
151 | sc->ec_vmem_size = is->id_msize; | |
152 | sc->ec_vmem_ring = sc->ec_vmem_addr + (EC_PAGE_SIZE * EC_TXBUF_SIZE); | |
153 | sc->ec_vmem_end = sc->ec_vmem_addr + is->id_msize; | |
154 | /* | |
155 | * Now we get the MAC address. Assume thin ethernet unless told otherwise later. | |
156 | */ | |
157 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, ECNTRL_RESET|2); /* Toggle reset bit on*/ | |
158 | DELAY(100); | |
159 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); /* Toggle reset bit off */ | |
160 | DELAY(100); | |
161 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, ECNTRL_SAPROM|2); /* Map SA_PROM */ | |
162 | for (i=0;i<ETHER_ADDR_LEN; ++i) | |
163 | sc->ec_addr[i] = inb(sc->ec_io_nic_addr + i); | |
164 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); /* Disable SA_PROM */ | |
165 | outb(sc->ec_io_ctl_addr + E33G_GACFR, EGACFR_IRQOFF); /* tcm, rsel, mbs0, nim */ | |
166 | /* | |
167 | * Stop the chip just in case. | |
168 | */ | |
169 | DELAY(1000); | |
170 | PAGE0 | |
171 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_STOP); | |
172 | DELAY(1000); | |
173 | ||
174 | /* Check cmd reg and fail if not right */ | |
175 | if ((i=inb(sc->ec_io_nic_addr + EN_CCMD)) != (ENC_NODMA|ENC_STOP)) | |
176 | return(0); | |
177 | ||
178 | /* | |
179 | * Test the shared memory. | |
180 | */ | |
181 | for(i = 0 ; i < sc->ec_vmem_size ; ++i) | |
182 | sc->ec_vmem_addr[i] = 0x0; | |
183 | for(sum=0, i=0; i<sc->ec_vmem_size; ++i) | |
184 | sum += sc->ec_vmem_addr[i]; | |
185 | if(sum) | |
186 | { | |
187 | printf("ec%d: shared memory error (device conflict?)\n", | |
188 | is->id_unit); | |
189 | return(0); | |
190 | } | |
191 | /* | |
192 | * All done. | |
193 | */ | |
194 | return(1); | |
195 | } | |
196 | ||
197 | ecattach(is) | |
198 | struct isa_device *is; | |
199 | { | |
200 | register struct ec_softc *sc = &ec_softc[is->id_unit]; | |
201 | register struct ifnet *ifp = &sc->ec_if; | |
202 | ||
203 | /** | |
204 | ** Initialize the ASIC in same order as Clarkson driver. | |
205 | **/ | |
206 | ||
207 | ||
208 | /* | |
209 | * Point vector pointer registers off into boonies. | |
210 | */ | |
211 | outb(sc->ec_io_ctl_addr + E33G_VP2, 0xff); | |
212 | outb(sc->ec_io_ctl_addr + E33G_VP1, 0xff); | |
213 | outb(sc->ec_io_ctl_addr + E33G_VP0, 0x0); | |
214 | /* | |
215 | * Set up control of shared memory, buffer ring, etc. | |
216 | */ | |
217 | outb(sc->ec_io_ctl_addr + E33G_STARTPG, EC_RXBUF_OFFSET); | |
218 | outb(sc->ec_io_ctl_addr + E33G_STOPPG, EC_RXBUF_END); | |
219 | /* | |
220 | * Set up the IRQ and NBURST on the board. | |
221 | * ( Not sure why we set up NBURST since we don't use DMA.) | |
222 | * | |
223 | * Normally we would is->id_irq<<2 but IRQ2 is defined as 0x200 | |
224 | * in icu.h so it's a special case. | |
225 | */ | |
226 | if(is->id_irq == 0x200) | |
227 | outb(sc->ec_io_ctl_addr + E33G_IDCFR, 0x10); | |
228 | else | |
229 | outb(sc->ec_io_ctl_addr + E33G_IDCFR, is->id_irq << 2); | |
230 | outb(sc->ec_io_ctl_addr + E33G_NBURST, 0x08); /* Set Burst to 8 */ | |
231 | outb(sc->ec_io_ctl_addr + E33G_DMAAH, 0x20); | |
232 | outb(sc->ec_io_ctl_addr + E33G_DMAAL, 0x0); | |
233 | /* | |
234 | * Fill in the ifnet structure. | |
235 | */ | |
236 | ifp->if_unit = is->id_unit; | |
237 | ifp->if_name = "ec" ; | |
238 | ifp->if_mtu = ETHERMTU; | |
239 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; | |
240 | ifp->if_init = ec_init; | |
241 | ifp->if_output = ether_output; | |
242 | ifp->if_start = ec_start_output; | |
243 | ifp->if_ioctl = ec_ioctl; | |
244 | ifp->if_reset = ec_reset; | |
245 | ifp->if_watchdog = ec_watchdog; | |
246 | /* | |
247 | * Attach the interface to something. Have to figure this out later. | |
248 | */ | |
249 | if_attach(ifp); | |
250 | /* | |
251 | * Weeee.. We get to tell people we exist... | |
252 | */ | |
6b1becf0 | 253 | printf(" address %s\n", ether_sprintf(sc->ec_addr)); |
15637ed4 RG |
254 | } |
255 | ||
256 | ec_init(unit) | |
257 | int unit; | |
258 | { | |
259 | register struct ec_softc *sc = &ec_softc[unit]; | |
260 | register struct ifnet *ifp = &sc->ec_if; | |
261 | int i, s; | |
262 | u_short ax, cx; | |
263 | ||
264 | Bdry=0; | |
6b1becf0 | 265 | /* printf("ecinit"); */ |
15637ed4 RG |
266 | /* |
267 | * Address not known. | |
268 | */ | |
269 | if(ifp->if_addrlist == (struct ifaddr *) 0) | |
270 | return; | |
271 | ||
272 | /* | |
273 | * XXX (untested) | |
274 | * select thick (e.g. AUI connector) if LLC0 bit is set | |
275 | */ | |
276 | if (ifp->if_flags & IFF_LLC0) | |
277 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 0); | |
278 | else | |
279 | outb(sc->ec_io_ctl_addr + E33G_CNTRL, 2); | |
280 | ||
281 | /* | |
282 | * Set up the 8390 chip. | |
283 | * (Use sequence recommended by 3Com. ) | |
284 | */ | |
285 | s=splhigh(); | |
286 | PAGE0 | |
287 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_PAGE0|ENC_STOP); | |
288 | outb(sc->ec_io_nic_addr + EN0_DCFG, ENDCFG_BM8); | |
289 | outb(sc->ec_io_nic_addr + EN0_RCNTLO, 0x0); | |
290 | outb(sc->ec_io_nic_addr + EN0_RCNTHI, 0x0); | |
291 | outb(sc->ec_io_nic_addr + EN0_RXCR, ENRXCR_MON ); | |
292 | outb(sc->ec_io_nic_addr + EN0_TXCR, 0x02); | |
293 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, EC_RXBUF_OFFSET); | |
294 | outb(sc->ec_io_nic_addr + EN0_TPSR, 0x20); | |
295 | outb(sc->ec_io_nic_addr + EN0_STARTPG, EC_RXBUF_OFFSET); | |
296 | outb(sc->ec_io_nic_addr + EN0_STOPPG, EC_RXBUF_END); | |
297 | outb(sc->ec_io_nic_addr + EN0_ISR, 0xff); | |
298 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x3f); | |
299 | /* | |
300 | * Copy Ethernet address from SA_PROM into 8390 chip registers. | |
301 | */ | |
302 | PAGE1 | |
303 | for(i=0;i<6;i++) | |
304 | outb(sc->ec_io_nic_addr + EN1_PHYS+i, sc->ec_addr[i]); | |
305 | /* | |
306 | * Set multicast filter mask bits in case promiscuous rcv wanted (???) | |
307 | * (set to 0xff as in if_we.c) | |
308 | */ | |
309 | for(i=0;i<8;i++) | |
310 | outb(sc->ec_io_nic_addr + EN1_MULT+i, 0xff); | |
311 | /* | |
312 | * Set current shared page for RX to work on. | |
313 | */ | |
314 | outb(sc->ec_io_nic_addr + EN1_CURPAG, EC_RXBUF_OFFSET); | |
315 | /* | |
316 | * Start the 8390. Clear Interrupt Status reg, and accept Broadcast | |
317 | * packets. | |
318 | */ | |
319 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_START|ENC_PAGE0|ENC_NODMA); | |
320 | outb(sc->ec_io_nic_addr + EN0_ISR, 0xff); | |
321 | outb(sc->ec_io_nic_addr + EN0_TXCR, 0x0); | |
322 | outb(sc->ec_io_nic_addr + EN0_RXCR, ENRXCR_BCST); | |
323 | /* | |
324 | * Take interface out of reset, program the vector, | |
325 | * enable interrupts, and tell the world we are up. | |
326 | */ | |
327 | ifp->if_flags |= IFF_RUNNING; | |
328 | outb(sc->ec_io_ctl_addr + E33G_GACFR, EGACFR_NORM); /* tcm, rsel, mbs0 */ | |
329 | (void) splx(s); | |
330 | sc->ec_flags &= ~EC_TXBUSY; | |
331 | ec_start_output(ifp); | |
332 | } | |
333 | ||
334 | ec_start_output(ifp) | |
335 | struct ifnet *ifp; | |
336 | { | |
337 | register struct ec_softc *sc = &ec_softc[ifp->if_unit]; | |
338 | struct mbuf *m0, *m; | |
339 | register caddr_t buffer; | |
340 | int len, s; | |
341 | int ec_cmd_reg; | |
342 | ||
343 | /* | |
344 | * The DS8390 only has one transmit buffer, if it is busy we | |
345 | * must wait until the transmit interrupt completes. | |
346 | */ | |
347 | s=splhigh(); | |
348 | if(sc->ec_flags & EC_TXBUSY) | |
349 | { | |
350 | (void) splx(s); | |
351 | return; | |
352 | } | |
353 | IF_DEQUEUE(&sc->ec_if.if_snd, m); | |
354 | if(m == 0) | |
355 | { | |
356 | (void) splx(s); | |
357 | return; | |
358 | } | |
359 | sc->ec_flags |= EC_TXBUSY; | |
360 | (void) splx(s); | |
361 | ||
362 | /* | |
363 | * Copy the mbuf chain into the transmit buffer | |
364 | */ | |
365 | buffer = sc->ec_vmem_addr; | |
366 | len = 0; | |
367 | for(m0 = m; m!= 0; m = m->m_next) | |
368 | { | |
369 | bcopy(mtod(m, caddr_t), buffer, m->m_len); | |
370 | buffer += m->m_len; | |
371 | len += m->m_len; | |
372 | } | |
373 | m_freem(m0); | |
374 | ||
375 | /* | |
376 | * Init transmit length registers and set transmit start flag. | |
377 | */ | |
378 | s=splhigh(); | |
379 | len = MAX(len, ETHER_MIN_LEN); | |
380 | PAGE0 | |
381 | outb(sc->ec_io_nic_addr + EN0_TCNTLO, len & 0xff); | |
382 | outb(sc->ec_io_nic_addr + EN0_TCNTHI, len >> 8); | |
383 | ec_cmd_reg = inb(sc->ec_io_nic_addr + EN_CCMD); | |
384 | outb(sc->ec_io_nic_addr + EN_CCMD, ec_cmd_reg|ENC_TRANS); | |
385 | (void) splx(s); | |
386 | } | |
387 | ||
388 | int ec_cmd_reg, ec_sts_reg; | |
389 | /* | |
390 | * Interrupt handler. | |
391 | */ | |
392 | ecintr(unit) | |
393 | int unit; | |
394 | { | |
395 | register struct ec_softc *sc = &ec_softc[unit]; | |
396 | ||
397 | unit = 0; | |
398 | ||
399 | /* | |
400 | * Get current command register and interrupt status. | |
401 | * Turn off interrupts while we take care of things. | |
402 | */ | |
403 | ec_cmd_reg = inb(sc->ec_io_nic_addr + EN_CCMD); | |
404 | PAGE0 | |
405 | ec_sts_reg = inb(sc->ec_io_nic_addr + EN0_ISR); | |
406 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x0); | |
407 | loop: | |
408 | outb(sc->ec_io_nic_addr + EN0_ISR, ec_sts_reg); | |
409 | /* | |
410 | * have we lost ourselves somewhere? | |
411 | */ | |
412 | if (ec_sts_reg == 0xff) | |
413 | ec_watchdog(unit); | |
414 | /* | |
415 | * Transmit error | |
416 | */ | |
417 | if(ec_sts_reg & ENISR_TX_ERR) | |
418 | { | |
419 | sc->ec_if.if_collisions += inb(sc->ec_io_nic_addr + EN0_TCNTLO); | |
420 | ++sc->ec_if.if_oerrors; | |
421 | } | |
422 | /* | |
423 | * Receive Error | |
424 | */ | |
425 | if(ec_sts_reg & ENISR_RX_ERR) | |
426 | { | |
427 | (void) inb(sc->ec_io_nic_addr + 0xD); | |
428 | (void) inb(sc->ec_io_nic_addr + 0xE); | |
429 | (void) inb(sc->ec_io_nic_addr + 0xF); | |
430 | ++sc->ec_if.if_ierrors; | |
431 | } | |
432 | /* | |
433 | * Normal transmit complete. | |
434 | */ | |
435 | if(ec_sts_reg&ENISR_TX || ec_sts_reg&ENISR_TX_ERR) | |
436 | ectint(unit); | |
437 | /* | |
438 | * Normal receive notification | |
439 | */ | |
440 | if(ec_sts_reg&(ENISR_RX|ENISR_RX_ERR)) | |
441 | ecrint(unit); | |
442 | ||
443 | /* | |
444 | * Try to start transmit | |
445 | */ | |
446 | ec_start_output(&sc->ec_if); | |
447 | /* | |
448 | * Reenable onboard interrupts. | |
449 | */ | |
450 | /*PAGE0*/ | |
451 | outb(sc->ec_io_nic_addr + EN_CCMD, ec_cmd_reg); | |
452 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x3f); | |
453 | if(ec_sts_reg=inb(sc->ec_io_nic_addr + EN0_ISR)) | |
454 | goto loop; | |
455 | } | |
456 | ||
457 | /* | |
458 | * Transmit interrupt | |
459 | */ | |
460 | ectint(unit) | |
461 | int unit; | |
462 | { | |
463 | register struct ec_softc *sc = &ec_softc[unit]; | |
464 | /* | |
465 | * Do some statistics. | |
466 | */ | |
467 | PAGE0 | |
468 | sc->ec_flags &= ~EC_TXBUSY; | |
469 | sc->ec_if.if_timer = 0; | |
470 | ++sc->ec_if.if_opackets; | |
471 | sc->ec_if.if_collisions += inb(sc->ec_io_nic_addr + EN0_TCNTLO); | |
472 | } | |
473 | ||
474 | /* | |
475 | * Receive interrupt. | |
476 | * (This gave me the most trouble so excuse the mess.) | |
477 | */ | |
478 | ecrint(unit) | |
479 | int unit; | |
480 | { | |
481 | register struct ec_softc *sc = &ec_softc[unit]; | |
482 | u_char bnry, curr; | |
483 | int len; | |
484 | struct ec_ring *ecr; | |
485 | ||
486 | /* | |
487 | * Traverse the receive ring looking for packets to pass back. | |
488 | * The search is complete when we find a descriptor not in use. | |
489 | */ | |
490 | PAGE0 | |
491 | bnry = inb(sc->ec_io_nic_addr + EN0_BOUNDARY); | |
492 | PAGE1 | |
493 | curr = inb(sc->ec_io_nic_addr + EN1_CURPAG); | |
494 | if(Bdry) | |
495 | bnry =Bdry; | |
496 | ||
497 | while (bnry != curr) | |
498 | { | |
499 | /* get pointer to this buffer header structure */ | |
500 | ecr = (struct ec_ring *)(sc->ec_vmem_addr + ((bnry-EC_VMEM_OFFSET) << 8)); | |
501 | ||
502 | /* count includes CRC */ | |
503 | len = ecr->ec_count - 4; | |
504 | /*if (len > 30 && len <= ETHERMTU+100) */ | |
505 | ecread(sc, (caddr_t)(ecr + 1), len); | |
506 | /*else printf("reject:%x bnry:%x curr:%x", len, bnry, curr);*/ | |
507 | outofbufs: | |
508 | PAGE0 | |
509 | /* advance on chip Boundry register */ | |
510 | if((caddr_t) ecr + EC_PAGE_SIZE - 1 > sc->ec_vmem_end) { | |
511 | bnry = EC_RXBUF_OFFSET; | |
512 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, | |
513 | (sc->ec_vmem_size / EC_PAGE_SIZE) - 1 - EC_VMEM_OFFSET); | |
514 | } else { | |
515 | if (len > 30 && len <= ETHERMTU+100) | |
516 | bnry = ecr->ec_next_packet; | |
517 | else bnry = curr; | |
518 | ||
519 | /* watch out for NIC overflow, reset Boundry if invalid */ | |
520 | if ((bnry - 1) < EC_RXBUF_OFFSET) { | |
521 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, | |
522 | (sc->ec_vmem_size / EC_PAGE_SIZE) - 1 - EC_VMEM_OFFSET); | |
523 | bnry = EC_RXBUF_OFFSET; | |
524 | } else | |
525 | outb(sc->ec_io_nic_addr + EN0_BOUNDARY, bnry-1); | |
526 | } | |
527 | ||
528 | /* refresh our copy of CURR */ | |
529 | PAGE1 | |
530 | curr = inb(sc->ec_io_nic_addr + EN1_CURPAG); | |
531 | } | |
532 | Bdry = bnry; | |
533 | PAGE0 | |
534 | } | |
535 | ||
536 | #define ecdataaddr(sc, eh, off, type) \ | |
537 | ((type) ((caddr_t)((eh)+1)+(off) >= (sc)->ec_vmem_end) ? \ | |
538 | (((caddr_t)((eh)+1)+(off))) - (sc)->ec_vmem_end \ | |
539 | + (sc)->ec_vmem_ring: \ | |
540 | ((caddr_t)((eh)+1)+(off))) | |
541 | ||
542 | ecread(sc, buf, len) | |
543 | register struct ec_softc *sc; | |
544 | char *buf; | |
545 | int len; | |
546 | { | |
547 | register struct ether_header *eh; | |
548 | struct mbuf *m, *ecget(); | |
549 | int off, resid; | |
550 | ||
551 | /* | |
552 | * Deal with trailer protocol: if type is trailer type | |
553 | * get true type from first 16-bit word past data. | |
554 | * Remember that type was trailer by setting off. | |
555 | */ | |
556 | eh = (struct ether_header *)buf; | |
557 | eh->ether_type = ntohs((u_short)eh->ether_type); | |
558 | if (eh->ether_type >= ETHERTYPE_TRAIL && | |
559 | eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { | |
560 | off = (eh->ether_type - ETHERTYPE_TRAIL) * 512; | |
561 | if (off >= ETHERMTU) return; /* sanity */ | |
562 | eh->ether_type = ntohs(*ecdataaddr(sc, eh, off, u_short *)); | |
563 | resid = ntohs(*(ecdataaddr(sc, eh, off+2, u_short *))); | |
564 | if (off + resid > len) return; /* sanity */ | |
565 | len = off + resid; | |
566 | } else off = 0; | |
567 | ||
568 | len -= sizeof(struct ether_header); | |
569 | if (len <= 0) return; | |
570 | ||
571 | /* | |
572 | * Pull packet off interface. Off is nonzero if packet | |
573 | * has trailing header; neget will then force this header | |
574 | * information to be at the front, but we still have to drop | |
575 | * the type and length which are at the front of any trailer data. | |
576 | */ | |
577 | m = ecget(buf, len, off, &sc->ec_if, sc); | |
578 | if (m == 0) return; | |
579 | ether_input(&sc->ec_if, eh, m); | |
580 | } | |
581 | ec_ioctl(ifp, cmd, data) | |
582 | register struct ifnet *ifp; | |
583 | int cmd; | |
584 | caddr_t data; | |
585 | { | |
586 | register struct ifaddr *ifa = (struct ifaddr *)data; | |
587 | struct ec_softc *sc = &ec_softc[ifp->if_unit]; | |
588 | struct ifreq *ifr = (struct ifreq *)data; | |
589 | int s=splimp(), error=0; | |
590 | switch(cmd){ | |
591 | case SIOCSIFADDR: | |
592 | ifp->if_flags |= IFF_UP; | |
593 | switch (ifa->ifa_addr->sa_family) { | |
594 | #ifdef INET | |
595 | case AF_INET: | |
596 | ec_init(ifp->if_unit); /* before arpwhohas */ | |
597 | ((struct arpcom *)ifp)->ac_ipaddr = | |
598 | IA_SIN(ifa)->sin_addr; | |
599 | arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); | |
600 | break; | |
601 | #endif | |
602 | #ifdef NS | |
603 | case AF_NS: | |
604 | { | |
605 | register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); | |
606 | ||
607 | if (ns_nullhost(*ina)) | |
608 | ina->x_host = *(union ns_host *)(sc->ns_addr); | |
609 | else { | |
610 | /* | |
611 | * The manual says we can't change the address | |
612 | * while the receiver is armed, | |
613 | * so reset everything | |
614 | */ | |
615 | ifp->if_flags &= ~IFF_RUNNING; | |
616 | bcopy((caddr_t)ina->x_host.c_host, | |
617 | (caddr_t)sc->ns_addr, sizeof(sc->ns_addr)); | |
618 | } | |
619 | ec_init(ifp->if_unit); /* does ne_setaddr() */ | |
620 | break; | |
621 | } | |
622 | #endif | |
623 | default: | |
624 | ec_init(ifp->if_unit); | |
625 | break; | |
626 | } | |
627 | break; | |
628 | ||
629 | case SIOCSIFFLAGS: | |
630 | if ((ifp->if_flags & IFF_UP) == 0 && | |
631 | ifp->if_flags & IFF_RUNNING) { | |
632 | ifp->if_flags &= ~IFF_RUNNING; | |
633 | ec_stop(ifp->if_unit); | |
634 | } else if (ifp->if_flags & IFF_UP && | |
635 | (ifp->if_flags & IFF_RUNNING) == 0) | |
636 | ec_init(ifp->if_unit); | |
637 | break; | |
638 | ||
639 | #ifdef notdef | |
640 | case SIOCGHWADDR: | |
641 | bcopy((caddr_t)sc->sc_addr, (caddr_t) &ifr->ifr_data, | |
642 | sizeof(sc->sc_addr)); | |
643 | break; | |
644 | #endif | |
645 | ||
646 | default: | |
647 | error = EINVAL; | |
648 | } | |
649 | splx(s); | |
650 | return (error); | |
651 | } | |
652 | ||
653 | ec_reset(unit) | |
654 | int unit; | |
655 | { | |
656 | if(unit >= NEC) | |
657 | return; | |
658 | printf("ec%d: reset\n", unit); | |
659 | ec_init(unit); | |
660 | } | |
661 | ||
662 | ec_watchdog(unit) | |
663 | int unit; | |
664 | { | |
665 | log(LOG_WARNING, "ec%d: soft reset\n", unit); | |
666 | ec_stop(unit); | |
667 | ec_init(unit); | |
668 | } | |
669 | ||
670 | ec_stop(unit) | |
671 | int unit; | |
672 | { | |
673 | register struct ec_softc *sc = &ec_softc[unit]; | |
674 | int s; | |
675 | ||
676 | s=splimp(); | |
677 | PAGE0 | |
678 | outb(sc->ec_io_nic_addr + EN_CCMD, ENC_NODMA|ENC_STOP); | |
679 | outb(sc->ec_io_nic_addr + EN0_IMR, 0x0); | |
680 | sc->ec_flags &= ~EC_RUNNING; | |
681 | /* | |
682 | * Shutdown the 8390. | |
683 | */ | |
684 | (void) splx(s); | |
685 | } | |
686 | ||
687 | /* | |
688 | * Pull read data off a interface. | |
689 | * Len is length of data, with local net header stripped. | |
690 | * Off is non-zero if a trailer protocol was used, and | |
691 | * gives the offset of the trailer information. | |
692 | * We copy the trailer information and then all the normal | |
693 | * data into mbufs. When full cluster sized units are present | |
694 | * we copy into clusters. | |
695 | */ | |
696 | struct mbuf * | |
697 | ecget(buf, totlen, off0, ifp, sc) | |
698 | caddr_t buf; | |
699 | int totlen, off0; | |
700 | struct ifnet *ifp; | |
701 | struct ec_softc *sc; | |
702 | { | |
703 | struct mbuf *top, **mp, *m, *p; | |
704 | int off = off0, len; | |
705 | register caddr_t cp = buf; | |
706 | char *epkt; | |
707 | int tc =totlen; | |
708 | ||
709 | buf += sizeof(struct ether_header); | |
710 | cp = buf; | |
711 | epkt = cp + totlen; | |
712 | ||
713 | if (off) { | |
714 | cp += off + 2 * sizeof(u_short); | |
715 | totlen -= 2 * sizeof(u_short); | |
716 | } | |
717 | ||
718 | MGETHDR(m, M_DONTWAIT, MT_DATA); | |
719 | if (m == 0) | |
720 | return (0); | |
721 | m->m_pkthdr.rcvif = ifp; | |
722 | m->m_pkthdr.len = totlen; | |
723 | m->m_len = MHLEN; | |
724 | ||
725 | top = 0; | |
726 | mp = ⊤ | |
727 | while (totlen > 0) { | |
728 | if (top) { | |
729 | MGET(m, M_DONTWAIT, MT_DATA); | |
730 | if (m == 0) { | |
731 | m_freem(top); | |
732 | return (0); | |
733 | } | |
734 | m->m_len = MLEN; | |
735 | } | |
736 | len = min(totlen, epkt - cp); | |
737 | if (len >= MINCLSIZE) { | |
738 | MCLGET(m, M_DONTWAIT); | |
739 | if (m->m_flags & M_EXT) | |
740 | m->m_len = len = min(len, MCLBYTES); | |
741 | else | |
742 | len = m->m_len; | |
743 | } else { | |
744 | /* | |
745 | * Place initial small packet/header at end of mbuf. | |
746 | */ | |
747 | if (len < m->m_len) { | |
748 | if (top == 0 && len + max_linkhdr <= m->m_len) | |
749 | m->m_data += max_linkhdr; | |
750 | m->m_len = len; | |
751 | } else | |
752 | len = m->m_len; | |
753 | } | |
754 | ||
755 | totlen -= len; | |
756 | /* only do up to end of buffer */ | |
757 | if (cp+len > sc->ec_vmem_end) { | |
758 | unsigned toend = sc->ec_vmem_end - cp; | |
759 | ||
760 | bcopy(cp, mtod(m, caddr_t), toend); | |
761 | cp = sc->ec_vmem_ring; | |
762 | bcopy(cp, mtod(m, caddr_t)+toend, len - toend); | |
763 | cp += len - toend; | |
764 | epkt = cp + totlen; | |
765 | } else { | |
766 | bcopy(cp, mtod(m, caddr_t), (unsigned)len); | |
767 | cp += len; | |
768 | } | |
769 | *mp = m; | |
770 | mp = &m->m_next; | |
771 | if (cp == epkt) { | |
772 | cp = buf; | |
773 | epkt = cp + tc; | |
774 | } | |
775 | } | |
776 | return (top); | |
777 | } | |
778 | #endif /* NEC > 0 */ |