2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions
5 * 1. Redistributions of source code must retain all copyright
6 * notices, this list of conditions and the following disclaimer.
7 * 2. The names of the authors may not be used to endorse or promote products
8 * derived from this software without specific prior written permission
10 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
11 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
12 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
13 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
16 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
17 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 * if_wl.c - original MACH, then BSDI ISA wavelan driver
24 * ported to mach by Anders Klemets
25 * to BSDI by Robert Morris
26 * to FreeBSD by Jim Binkley
27 * to FreeBSD 2.2+ by Michael Smith
30 * Changed interface to match 2.1-2.2 differences.
31 * Implement IRQ selection logic in wlprobe()
32 * Implement PSA updating.
33 * Pruned heading comments for relevance.
34 * Ripped out all the 'interface counters' cruft.
35 * Cut the missing-interrupt timer back to 100ms.
37 * now supports all multicast mode (mrouted will work),
38 * but unfortunately must do that by going into promiscuous mode
39 * NWID sysctl added so that normally promiscuous mode is NWID-specific
40 * but can be made NWID-inspecific
44 * Ported to FreeBSD, got promiscuous mode working with bpfs,
45 * and rewired timer routine. The i82586 will hang occasionally on output
46 * and the watchdog timer will kick it if so and log an entry.
47 * 2 second timeout there. Apparently the chip loses an interrupt.
48 * Code borrowed from if_ie.c for watchdog timer.
50 * The wavelan card is a 2mbit radio modem that emulates ethernet;
51 * i.e., it uses MAC addresses. This should not be a surprise since
52 * it uses an ethernet controller as a major hw item.
53 * It can broadcast, unicast or apparently multicast in a base cell
54 * using an omni-directional antennae that is
55 * about 800 feet around the base cell barring walls and metal.
56 * With directional antennae, it can be used point to point over a mile
57 * or so apparently (haven't tried that).
59 * There are ISA and pcmcia versions (not supported by this code).
60 * The ISA card has an Intel 82586 lan controller on it. It consists
61 * of 2 pieces of hw, the lan controller (intel) and a radio-modem.
62 * The latter has an extra set of controller registers that has nothing
63 * to do with the i82586 and allows setting and monitoring of radio
64 * signal strength, etc. There is a nvram area called the PSA that
65 * contains a number of setup variables including the IRQ and so-called
66 * NWID or Network ID. The NWID must be set the same for all radio
67 * cards to communicate (unless you are using the ATT/NCR roaming feature
68 * with their access points. There is no support for that here. Roaming
69 * involves a link-layer beacon sent out from the access points. End
70 * stations monitor the signal strength and only use the strongest
71 * access point). This driver assumes that the base ISA port, IRQ,
72 * and NWID are first set in nvram via the dos-side "instconf.exe" utility
73 * supplied with the card. This driver takes the ISA port from
74 * the kernel configuration setup, and then determines the IRQ either
75 * from the kernel config (if an explicit IRQ is set) or from the
76 * PSA on the card if not.
77 * The hw also magically just uses the IRQ set in the nvram.
78 * The NWID is used magically as well by the radio-modem
79 * to determine which packets to keep or throw out.
83 * device wl0 at isa? port 0x300 net irq ?
86 * 1. WLDEBUG. (off) - if turned on enables IFF_DEBUG set via ifconfig debug
87 * 2. MULTICAST (on) - turned on and works up to and including mrouted
88 * 3. WLCACHE (off) - define to turn on a signal strength
89 * (and other metric) cache that is indexed by sender MAC address.
90 * Apps can read this out to learn the remote signal strength of a
91 * sender. Note that it has a switch so that it only stores
92 * broadcast/multicast senders but it could be set to store unicast
93 * too only. Size is hardwired in if_wl_wavelan.h
95 * one further note: promiscuous mode is a curious thing. In this driver,
96 * promiscuous mode apparently CAN catch ALL packets and ignore the NWID
97 * setting. This is probably more useful in a sense (for snoopers) if
98 * you are interested in all traffic as opposed to if you are interested
99 * in just your own. There is a driver specific sysctl to turn promiscuous
100 * from just promiscuous to wildly promiscuous...
102 * This driver also knows how to load the synthesizers in the 2.4 Gz
103 * ISA Half-card, Product number 847647476 (USA/FCC IEEE Channel set).
104 * This product consists of a "mothercard" that contains the 82586,
105 * NVRAM that holds the PSA, and the ISA-buss interface custom ASIC.
106 * The radio transceiver is a "daughtercard" called the WaveMODEM which
107 * connects to the mothercard through two single-inline connectors: a
108 * 20-pin connector provides DC-power and modem signals, and a 3-pin
109 * connector which exports the antenna connection. The code herein
110 * loads the receive and transmit synthesizers and the corresponding
111 * transmitter output power value from an EEPROM controlled through
112 * additional registers via the MMC. The EEPROM address selected
113 * are those whose values are preset by the DOS utility programs
114 * provided with the product, and this provides compatible operation
115 * with the DOS Packet Driver software. A future modification will
116 * add the necessary functionality to this driver and to the wlconfig
117 * utility to completely replace the DOS Configuration Utilities.
118 * The 2.4 Gz WaveMODEM is described in document number 407-024692/E,
119 * and is available through Lucent Technologies OEM supply channels.
126 * Olivetti PC586 Mach Ethernet driver v1.0
127 * Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989
128 * All rights reserved.
132 Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
133 Cupertino, California.
137 Permission to use, copy, modify, and distribute this software and
138 its documentation for any purpose and without fee is hereby
139 granted, provided that the above copyright notice appears in all
140 copies and that both the copyright notice and this permission notice
141 appear in supporting documentation, and that the name of Olivetti
142 not be used in advertising or publicity pertaining to distribution
143 of the software without specific, written prior permission.
145 OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
146 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
147 IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
148 CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
149 LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
150 NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
151 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
154 Copyright 1988, 1989 by Intel Corporation, Santa Clara, California.
158 Permission to use, copy, modify, and distribute this software and
159 its documentation for any purpose and without fee is hereby
160 granted, provided that the above copyright notice appears in all
161 copies and that both the copyright notice and this permission notice
162 appear in supporting documentation, and that the name of Intel
163 not be used in advertising or publicity pertaining to distribution
164 of the software without specific, written prior permission.
166 INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
167 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
168 IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
169 CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
170 LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
171 NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
172 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
175 #include <sys/cdefs.h>
176 __FBSDID("$FreeBSD$");
181 * 1. The best book on the 82586 is:
182 * LAN Components User's Manual by Intel
183 * The copy I found was dated 1984. This really tells you
184 * what the state machines are doing
185 * 2. In the current design, we only do one write at a time,
186 * though the hardware is capable of chaining and possibly
187 * even batching. The problem is that we only make one
188 * transmit buffer available in sram space.
191 #include "opt_wavelan.h"
192 #include "opt_inet.h"
194 #include <sys/param.h>
195 #include <sys/systm.h>
196 #include <sys/kernel.h>
197 #include <sys/module.h>
198 #include <sys/sockio.h>
199 #include <sys/mbuf.h>
200 #include <sys/priv.h>
201 #include <sys/socket.h>
202 #include <sys/syslog.h>
203 #include <machine/bus.h>
204 #include <machine/resource.h>
206 #include <sys/rman.h>
208 #include <sys/sysctl.h>
210 #include <net/ethernet.h>
212 #include <net/if_var.h>
213 #include <net/if_arp.h>
214 #include <net/if_dl.h>
215 #include <net/if_types.h>
218 #include <netinet/in.h>
219 #include <netinet/in_systm.h>
220 #include <netinet/ip.h>
221 #include <netinet/if_ether.h>
225 #include <isa/isavar.h>
227 /* was 1000 in original, fed to DELAY(x) */
228 #define DELAYCONST 1000
229 #include <dev/wl/if_wl_i82586.h> /* Definitions for the Intel chip */
230 #include <dev/wl/if_wl.h>
231 #include <machine/if_wl_wavelan.h>
233 static char t_packet[ETHERMTU + sizeof(struct ether_header) + sizeof(long)];
238 u_char nwid[2]; /* current radio modem nwid */
242 int tbusy; /* flag to determine if xmit is busy */
246 u_short hacr; /* latest host adapter CR command */
248 u_char chan24; /* 2.4 Gz: channel number/EEPROM Area # */
249 u_short freq24; /* 2.4 Gz: resulting frequency */
252 struct resource *res_ioport;
253 struct resource *res_irq;
256 bus_space_handle_t bh;
258 struct callout_handle watchdog_ch;
260 int w_sigitems; /* number of cached entries */
261 /* array of cache entries */
262 struct w_sigcache w_sigcache[ MAXCACHEITEMS ];
263 int w_nextcache; /* next free cache entry */
264 int w_wrapindex; /* next "free" cache entry */
268 #define WL_LOCK(_sc) mtx_lock(&(_sc)->wl_mtx)
269 #define WL_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->wl_mtx, MA_OWNED)
270 #define WL_UNLOCK(_sc) mtx_unlock(&(_sc)->wl_mtx)
272 static int wlprobe(device_t);
273 static int wlattach(device_t);
274 static int wldetach(device_t);
276 static device_method_t wl_methods[] = {
277 DEVMETHOD(device_probe, wlprobe),
278 DEVMETHOD(device_attach, wlattach),
279 DEVMETHOD(device_detach, wldetach),
283 static driver_t wl_driver = {
286 sizeof (struct wl_softc)
289 devclass_t wl_devclass;
290 DRIVER_MODULE(wl, isa, wl_driver, wl_devclass, 0, 0);
291 MODULE_DEPEND(wl, isa, 1, 1, 1);
292 MODULE_DEPEND(wl, ether, 1, 1, 1);
294 static struct isa_pnp_id wl_ids[] = {
299 * XXX The Wavelan appears to be prone to dropping stuff if you talk to
300 * it too fast. This disgusting hack inserts a delay after each packet
301 * is queued which helps avoid this behaviour on fast systems.
303 static int wl_xmit_delay = 250;
304 SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_delay, CTLFLAG_RW, &wl_xmit_delay, 0, "");
307 * not XXX, but ZZZ (bizarre).
308 * promiscuous mode can be toggled to ignore NWIDs. By default,
309 * it does not. Caution should be exercised about combining
310 * this mode with IFF_ALLMULTI which puts this driver in
313 static int wl_ignore_nwid = 0;
314 SYSCTL_INT(_machdep, OID_AUTO, wl_ignore_nwid, CTLFLAG_RW, &wl_ignore_nwid, 0, "");
317 * Emit diagnostics about transmission problems
319 static int xmt_watch = 0;
320 SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_watch, CTLFLAG_RW, &xmt_watch, 0, "");
323 * Collect SNR statistics
325 static int gathersnr = 0;
326 SYSCTL_INT(_machdep, OID_AUTO, wl_gather_snr, CTLFLAG_RW, &gathersnr, 0, "");
328 static int wl_allocate_resources(device_t device);
329 static int wl_deallocate_resources(device_t device);
330 static void wlstart(struct ifnet *ifp);
331 static void wlinit(void *xsc);
332 static int wlioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
333 static timeout_t wlwatchdog;
334 static void wlintr(void *arg);
335 static void wlxmt(struct wl_softc *sc, struct mbuf *m);
336 static int wldiag(struct wl_softc *sc);
337 static int wlconfig(struct wl_softc *sc);
338 static int wlcmd(struct wl_softc *sc, char *str);
339 static void wlmmcstat(struct wl_softc *sc);
340 static u_short wlbldru(struct wl_softc *sc);
341 static u_short wlmmcread(u_int base, u_short reg);
342 static void wlinitmmc(struct wl_softc *sc);
343 static int wlhwrst(struct wl_softc *sc);
344 static void wlrustrt(struct wl_softc *sc);
345 static void wlbldcu(struct wl_softc *sc);
346 static int wlack(struct wl_softc *sc);
347 static int wlread(struct wl_softc *sc, u_short fd_p);
348 static void getsnr(struct wl_softc *sc);
349 static void wlrcv(struct wl_softc *sc);
350 static int wlrequeue(struct wl_softc *sc, u_short fd_p);
351 static void wlsftwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc);
352 static void wlhdwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc);
354 static void wltbd(struct wl_softc *sc);
356 static void wlgetpsa(int base, u_char *buf);
357 static void wlsetpsa(struct wl_softc *sc);
358 static u_short wlpsacrc(u_char *buf);
359 static void wldump(struct wl_softc *sc);
361 static void wl_cache_store(struct wl_softc *, int, struct ether_header *, struct mbuf *);
362 static void wl_cache_zero(struct wl_softc *sc);
365 /* array for maping irq numbers to values for the irq parameter register */
366 static int irqvals[16] = {
367 0, 0, 0, 0x01, 0x02, 0x04, 0, 0x08, 0, 0, 0x10, 0x20, 0x40, 0, 0, 0x80
373 * This function "probes" or checks for the WaveLAN board on the bus to
374 * see if it is there. As far as I can tell, the best break between this
375 * routine and the attach code is to simply determine whether the board
376 * is configured in properly. Currently my approach to this is to write
377 * and read a word from the SRAM on the board being probed. If the word
378 * comes back properly then we assume the board is there. The config
379 * code expects to see a successful return from the probe routine before
380 * attach will be called.
382 * input : address device is mapped to, and unit # being checked
383 * output : a '1' is returned if the board exists, and a 0 otherwise
387 wlprobe(device_t device)
391 char *str = "wl%d: board out of range [0..%d]\n";
393 unsigned long junk, oldpri, sirq;
396 error = ISA_PNP_PROBE(device_get_parent(device), device, wl_ids);
397 if (error == ENXIO || error == 0)
400 sc = device_get_softc(device);
401 error = wl_allocate_resources(device);
405 base = rman_get_start(sc->res_ioport);
408 * regular CMD() will not work, since no softc yet
410 #define PCMD(base, hacr) outw((base), (hacr))
413 PCMD(base, HACR_RESET); /* reset the board */
414 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
415 PCMD(base, HACR_RESET); /* reset the board */
416 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
419 /* clear reset command and set PIO#1 in autoincrement mode */
420 PCMD(base, HACR_DEFAULT);
421 PCMD(base, HACR_DEFAULT);
422 outw(PIOR1(base), 0); /* go to beginning of RAM */
423 outsw(PIOP1(base), str, strlen(str)/2+1); /* write string */
425 outw(PIOR1(base), 0); /* rewind */
426 insw(PIOP1(base), inbuf, strlen(str)/2+1); /* read result */
428 if (bcmp(str, inbuf, strlen(str))) {
433 sc->chan24 = 0; /* 2.4 Gz: config channel */
434 sc->freq24 = 0; /* 2.4 Gz: frequency */
436 /* read the PSA from the board into temporary storage */
437 wlgetpsa(base, inbuf);
439 /* We read the IRQ value from the PSA on the board. */
440 for (irq = 15; irq >= 0; irq--)
441 if (irqvals[irq] == inbuf[WLPSA_IRQNO])
443 if ((irq == 0) || (irqvals[irq] == 0)){
444 printf("wl%d: PSA corrupt (invalid IRQ value)\n",
445 device_get_unit(device));
448 * If the IRQ requested by the PSA is already claimed by another
449 * device, the board won't work, but the user can still access the
450 * driver to change the IRQ.
452 if (bus_get_resource(device, SYS_RES_IRQ, 0, &sirq, &junk))
454 if (irq != (int)sirq)
455 printf("wl%d: board is configured for interrupt %d\n",
456 device_get_unit(device), irq);
458 wl_deallocate_resources(device);
462 wl_deallocate_resources(device);
469 * This function attaches a WaveLAN board to the "system". The rest of
470 * runtime structures are initialized here (this routine is called after
471 * a successful probe of the board). Once the ethernet address is read
472 * and stored, the board's ifnet structure is attached and readied.
474 * input : isa_dev structure setup in autoconfig
475 * output : board structs and ifnet is setup
479 wlattach(device_t device)
488 sc = device_get_softc(device);
489 ifp = sc->ifp = if_alloc(IFT_ETHER);
491 device_printf(device, "can not if_alloc()\n");
495 mtx_init(&sc->wl_mtx, device_get_nameunit(device), MTX_NETWORK_LOCK,
496 MTX_DEF | MTX_RECURSE);
498 error = wl_allocate_resources(device);
500 wl_deallocate_resources(device);
504 base = rman_get_start(sc->res_ioport);
505 unit = device_get_unit(device);
508 printf("wlattach: base %x, unit %d\n", base, unit);
515 sc->hacr = HACR_RESET;
516 callout_handle_init(&sc->watchdog_ch);
517 CMD(sc); /* reset the board */
518 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
520 /* clear reset command and set PIO#2 in parameter access mode */
521 sc->hacr = (HACR_DEFAULT & ~HACR_16BITS);
524 /* Read the PSA from the board for our later reference */
525 wlgetpsa(base, sc->psa);
528 sc->nwid[0] = sc->psa[WLPSA_NWID];
529 sc->nwid[1] = sc->psa[WLPSA_NWID+1];
531 /* fetch MAC address - decide which one first */
532 if (sc->psa[WLPSA_MACSEL] & 1)
536 for (i=0; i < WAVELAN_ADDR_SIZE; ++i)
537 eaddr[i] = sc->psa[j + i];
539 /* enter normal 16 bit mode operation */
540 sc->hacr = HACR_DEFAULT;
544 outw(PIOR1(base), OFFSET_SCB + 8); /* address of scb_crcerrs */
545 outw(PIOP1(base), 0); /* clear scb_crcerrs */
546 outw(PIOP1(base), 0); /* clear scb_alnerrs */
547 outw(PIOP1(base), 0); /* clear scb_rscerrs */
548 outw(PIOP1(base), 0); /* clear scb_ovrnerrs */
551 ifp->if_mtu = WAVELAN_MTU;
552 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
554 ifp->if_flags |= IFF_DEBUG;
557 ifp->if_flags |= IFF_MULTICAST;
558 #endif /* MULTICAST */
559 if_initname(ifp, device_get_name(device), device_get_unit(device));
560 ifp->if_init = wlinit;
561 ifp->if_start = wlstart;
562 ifp->if_ioctl = wlioctl;
563 ifp->if_snd.ifq_maxlen = ifqmaxlen;
568 ether_ifattach(ifp, eaddr);
570 if_printf(ifp, "NWID 0x%02x%02x", sc->nwid[0], sc->nwid[1]);
572 printf(", Freq %d MHz",sc->freq24); /* 2.4 Gz */
573 printf("\n"); /* 2.4 Gz */
575 bus_setup_intr(device, sc->res_irq, INTR_TYPE_NET, NULL, wlintr, sc, &sc->intr_cookie);
583 wldetach(device_t device)
585 struct wl_softc *sc = device_get_softc(device);
586 device_t parent = device_get_parent(device);
594 /* reset the board */
595 sc->hacr = HACR_RESET;
597 sc->hacr = HACR_DEFAULT;
600 if (sc->intr_cookie != NULL) {
601 BUS_TEARDOWN_INTR(parent, device, sc->res_irq, sc->intr_cookie);
602 sc->intr_cookie = NULL;
605 bus_generic_detach(device);
606 wl_deallocate_resources(device);
609 mtx_destroy(&sc->wl_mtx);
614 wl_allocate_resources(device_t device)
616 struct wl_softc *sc = device_get_softc(device);
617 int ports = 16; /* Number of ports */
619 sc->res_ioport = bus_alloc_resource(device, SYS_RES_IOPORT,
620 &sc->rid_ioport, 0ul, ~0ul, ports, RF_ACTIVE);
621 if (sc->res_ioport == NULL)
624 sc->res_irq = bus_alloc_resource_any(device, SYS_RES_IRQ,
625 &sc->rid_irq, RF_SHAREABLE|RF_ACTIVE);
626 if (sc->res_irq == NULL)
631 wl_deallocate_resources(device);
636 wl_deallocate_resources(device_t device)
638 struct wl_softc *sc = device_get_softc(device);
640 if (sc->res_irq != 0) {
641 bus_release_resource(device, SYS_RES_IRQ,
642 sc->rid_irq, sc->res_irq);
645 if (sc->res_ioport != 0) {
646 bus_release_resource(device, SYS_RES_IOPORT,
647 sc->rid_ioport, sc->res_ioport);
654 * Print out interesting information about the 82596.
657 wldump(struct wl_softc *sc)
662 printf("hasr %04x\n", inw(HASR(base)));
664 printf("scb at %04x:\n ", OFFSET_SCB);
665 outw(PIOR1(base), OFFSET_SCB);
666 for (i = 0; i < 8; i++)
667 printf("%04x ", inw(PIOP1(base)));
670 printf("cu at %04x:\n ", OFFSET_CU);
671 outw(PIOR1(base), OFFSET_CU);
672 for (i = 0; i < 8; i++)
673 printf("%04x ", inw(PIOP1(base)));
676 printf("tbd at %04x:\n ", OFFSET_TBD);
677 outw(PIOR1(base), OFFSET_TBD);
678 for (i = 0; i < 4; i++)
679 printf("%04x ", inw(PIOP1(base)));
683 /* Initialize the Modem Management Controller */
685 wlinitmmc(struct wl_softc *sc)
692 /* enter 8 bit operation */
693 sc->hacr = (HACR_DEFAULT & ~HACR_16BITS);
696 configured = sc->psa[WLPSA_CONFIGURED] & 1;
699 * Set default modem control parameters. Taken from NCR document
702 MMC_WRITE(MMC_JABBER_ENABLE, 0x01);
703 MMC_WRITE(MMC_ANTEN_SEL, 0x02);
704 MMC_WRITE(MMC_IFS, 0x20);
705 MMC_WRITE(MMC_MOD_DELAY, 0x04);
706 MMC_WRITE(MMC_JAM_TIME, 0x38);
707 MMC_WRITE(MMC_DECAY_PRM, 0x00); /* obsolete ? */
708 MMC_WRITE(MMC_DECAY_UPDAT_PRM, 0x00);
710 MMC_WRITE(MMC_LOOPT_SEL, 0x00);
711 if (sc->psa[WLPSA_COMPATNO] & 1) {
712 MMC_WRITE(MMC_THR_PRE_SET, 0x01); /* 0x04 for AT and 0x01 for MCA */
714 MMC_WRITE(MMC_THR_PRE_SET, 0x04); /* 0x04 for AT and 0x01 for MCA */
716 MMC_WRITE(MMC_QUALITY_THR, 0x03);
718 /* use configuration defaults from parameter storage area */
719 if (sc->psa[WLPSA_NWIDENABLE] & 1) {
720 if ((mode & (MOD_PROM | MOD_ENAL)) && wl_ignore_nwid) {
721 MMC_WRITE(MMC_LOOPT_SEL, 0x40);
723 MMC_WRITE(MMC_LOOPT_SEL, 0x00);
726 MMC_WRITE(MMC_LOOPT_SEL, 0x40); /* disable network id check */
728 MMC_WRITE(MMC_THR_PRE_SET, sc->psa[WLPSA_THRESH]);
729 MMC_WRITE(MMC_QUALITY_THR, sc->psa[WLPSA_QUALTHRESH]);
731 MMC_WRITE(MMC_FREEZE, 0x00);
732 MMC_WRITE(MMC_ENCR_ENABLE, 0x00);
734 MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]); /* set NWID */
735 MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]);
737 /* enter normal 16 bit mode operation */
738 sc->hacr = HACR_DEFAULT;
740 CMD(sc); /* virtualpc1 needs this! */
742 if (sc->psa[WLPSA_COMPATNO]== /* 2.4 Gz: half-card ver */
743 WLPSA_COMPATNO_WL24B) { /* 2.4 Gz */
744 i=sc->chan24<<4; /* 2.4 Gz: position ch # */
745 MMC_WRITE(MMC_EEADDR,i+0x0f); /* 2.4 Gz: named ch, wc=16 */
746 MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Synths */
747 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */
748 for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */
749 DELAY(40); /* 2.4 Gz */
750 if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */
751 &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */
752 +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */
753 break; /* 2.4 Gz: download finished */
755 if (i==1000) printf("wl: synth load failed\n"); /* 2.4 Gz */
756 MMC_WRITE(MMC_EEADDR,0x61); /* 2.4 Gz: default pwr, wc=2 */
757 MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Xmit Pwr */
758 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */
759 for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */
760 DELAY(40); /* 2.4 Gz */
761 if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */
762 &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */
763 +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */
764 break; /* 2.4 Gz: download finished */
766 if (i==1000) printf("wl: xmit pwr load failed\n"); /* 2.4 Gz */
767 MMC_WRITE(MMC_ANALCTRL, /* 2.4 Gz: EXT ant+polarity */
768 MMC_ANALCTRL_ANTPOL + /* 2.4 Gz: */
769 MMC_ANALCTRL_EXTANT); /* 2.4 Gz: */
770 i=sc->chan24<<4; /* 2.4 Gz: position ch # */
771 MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */
772 MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */
773 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */
774 DELAY(40); /* 2.4 Gz */
775 i = wlmmcread(base,MMC_EEDATALrv) /* 2.4 Gz: freq val */
776 + (wlmmcread(base,MMC_EEDATAHrv)<<8); /* 2.4 Gz */
777 sc->freq24 = (i>>6)+2400; /* 2.4 Gz: save real freq */
784 * Another routine that interfaces the "if" layer to this driver.
785 * Simply resets the structures that are used by "upper layers".
786 * As well as calling wlhwrst that does reset the WaveLAN board.
788 * input : softc pointer for this interface
789 * output : structures (if structs) and board are reset
795 struct wl_softc *sc = xsc;
796 struct ifnet *ifp = sc->ifp;
801 if (sc->ifp->if_flags & IFF_DEBUG)
802 printf("wl%d: entered wlinit()\n",sc->unit);
806 if ((stat = wlhwrst(sc)) == TRUE) {
807 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING; /* same as DSF_RUNNING */
809 * OACTIVE is used by upper-level routines
812 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; /* same as tbusy below */
814 sc->flags |= DSF_RUNNING;
816 untimeout(wlwatchdog, sc, sc->watchdog_ch);
820 printf("wl%d init(): trouble resetting board.\n", sc->unit);
829 * This routine resets the WaveLAN board that corresponds to the
830 * board number passed in.
832 * input : board number to do a hardware reset
833 * output : board is reset
837 wlhwrst(struct wl_softc *sc)
841 if (sc->ifp->if_flags & IFF_DEBUG)
842 printf("wl%d: entered wlhwrst()\n", sc->unit);
844 sc->hacr = HACR_RESET;
845 CMD(sc); /* reset the board */
847 /* clear reset command and set PIO#1 in autoincrement mode */
848 sc->hacr = HACR_DEFAULT;
852 if (sc->ifp->if_flags & IFF_DEBUG)
853 wlmmcstat(sc); /* Display MMC registers */
855 wlbldcu(sc); /* set up command unit structures */
860 if (wlconfig(sc) == 0)
863 * insert code for loopback test here
865 wlrustrt(sc); /* start receive unit */
867 /* enable interrupts */
868 sc->hacr = (HACR_DEFAULT | HACR_INTRON);
877 * This function builds up the command unit structures. It inits
878 * the scp, iscp, scb, cb, tbd, and tbuf.
882 wlbldcu(struct wl_softc *sc)
884 short base = sc->base;
892 bzero(&scp, sizeof(scp));
894 scp.scp_iscp = OFFSET_ISCP;
895 scp.scp_iscp_base = 0;
896 outw(PIOR1(base), OFFSET_SCP);
897 outsw(PIOP1(base), &scp, sizeof(scp_t)/2);
899 bzero(&iscp, sizeof(iscp));
901 iscp.iscp_scb_offset = OFFSET_SCB;
903 iscp.iscp_scb_base = 0;
904 outw(PIOR1(base), OFFSET_ISCP);
905 outsw(PIOP1(base), &iscp, sizeof(iscp_t)/2);
908 scb.scb_command = SCB_RESET;
909 scb.scb_cbl_offset = OFFSET_CU;
910 scb.scb_rfa_offset = OFFSET_RU;
914 scb.scb_ovrnerrs = 0;
915 outw(PIOR1(base), OFFSET_SCB);
916 outsw(PIOP1(base), &scb, sizeof(scb_t)/2);
920 outw(PIOR0(base), OFFSET_ISCP + 0); /* address of iscp_busy */
921 for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); )
924 printf("wl%d bldcu(): iscp_busy timeout.\n", sc->unit);
925 outw(PIOR0(base), OFFSET_SCB + 0); /* address of scb_status */
926 for (i = STATUS_TRIES; i-- > 0; ) {
927 if (inw(PIOP0(base)) == (SCB_SW_CX|SCB_SW_CNA))
931 printf("wl%d bldcu(): not ready after reset.\n", sc->unit);
935 cb.ac_command = AC_CW_EL; /* NOP */
936 cb.ac_link_offset = OFFSET_CU;
937 outw(PIOR1(base), OFFSET_CU);
938 outsw(PIOP1(base), &cb, 6/2);
941 tbd.next_tbd_offset = I82586NULL;
944 outw(PIOR1(base), OFFSET_TBD);
945 outsw(PIOP1(base), &tbd, sizeof(tbd_t)/2);
953 * input : board number
954 * output : stuff sent to board if any there
958 wlstart(struct ifnet *ifp)
961 struct wl_softc *sc = ifp->if_softc;
962 short base = sc->base;
963 int scb_status, cu_status, scb_command;
967 if (sc->ifp->if_flags & IFF_DEBUG)
968 printf("%s: entered wlstart()\n", ifp->if_xname);
971 outw(PIOR1(base), OFFSET_CU);
972 cu_status = inw(PIOP1(base));
973 outw(PIOR0(base),OFFSET_SCB + 0); /* scb_status */
974 scb_status = inw(PIOP0(base));
975 outw(PIOR0(base), OFFSET_SCB + 2);
976 scb_command = inw(PIOP0(base));
979 * don't need OACTIVE check as tbusy here checks to see
980 * if we are already busy
983 if ((scb_status & 0x0700) == SCB_CUS_IDLE &&
984 (cu_status & AC_SW_B) == 0){
986 untimeout(wlwatchdog, sc, sc->watchdog_ch);
987 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
989 * This is probably just a race. The xmt'r is just
990 * became idle but WE have masked interrupts so ...
993 printf("%s: CU idle, scb %04x %04x cu %04x\n",
994 ifp->if_xname, scb_status, scb_command, cu_status);
996 if (xmt_watch) printf("!!");
999 return; /* genuinely still busy */
1001 } else if ((scb_status & 0x0700) == SCB_CUS_ACTV ||
1002 (cu_status & AC_SW_B)){
1004 printf("%s: CU unexpectedly busy; scb %04x cu %04x\n",
1005 ifp->if_xname, scb_status, cu_status);
1007 if (xmt_watch) printf("%s: busy?!",ifp->if_xname);
1009 return; /* hey, why are we busy? */
1012 /* get ourselves some data */
1014 IF_DEQUEUE(&ifp->if_snd, m);
1015 if (m != (struct mbuf *)0) {
1016 /* let BPF see it before we commit it */
1019 /* set the watchdog timer so that if the board
1020 * fails to interrupt we will restart
1022 /* try 10 ticks, not very long */
1023 sc->watchdog_ch = timeout(wlwatchdog, sc, 10);
1024 sc->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1025 sc->ifp->if_opackets++;
1028 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1037 * This routine does the actual copy of data (including ethernet header
1038 * structure) from the WaveLAN to an mbuf chain that will be passed up
1039 * to the "if" (network interface) layer. NOTE: we currently
1040 * don't handle trailer protocols, so if that is needed, it will
1041 * (at least in part) be added here. For simplicities sake, this
1042 * routine copies the receive buffers from the board into a local (stack)
1043 * buffer until the frame has been copied from the board. Once in
1044 * the local buffer, the contents are copied to an mbuf chain that
1045 * is then enqueued onto the appropriate "if" queue.
1047 * input : board number, and a frame descriptor address
1048 * output : the packet is put into an mbuf chain, and passed up
1049 * assumes : if any errors occur, packet is "dropped on the floor"
1053 wlread(struct wl_softc *sc, u_short fd_p)
1055 struct ifnet *ifp = sc->ifp;
1056 short base = sc->base;
1058 struct ether_header *eh;
1063 u_short bytes_in_msg, bytes_in_mbuf, bytes;
1068 if (sc->ifp->if_flags & IFF_DEBUG)
1069 printf("wl%d: entered wlread()\n", sc->unit);
1071 if (!((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))) {
1072 printf("%s read(): board is not running.\n", ifp->if_xname);
1073 sc->hacr &= ~HACR_INTRON;
1074 CMD(sc); /* turn off interrupts */
1078 * Collect message size.
1080 outw(PIOR1(base), fd_p);
1081 insw(PIOP1(base), &fd, sizeof(fd_t)/2);
1082 if (fd.rbd_offset == I82586NULL) {
1083 if (wlhwrst(sc) != TRUE) {
1084 sc->hacr &= ~HACR_INTRON;
1085 CMD(sc); /* turn off interrupts */
1086 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1091 outw(PIOR1(base), fd.rbd_offset);
1092 insw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1093 bytes_in_msg = rbd.status & RBD_SW_COUNT;
1096 * Allocate a cluster'd mbuf to receive the packet.
1098 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1100 if (wlhwrst(sc) != TRUE) {
1101 sc->hacr &= ~HACR_INTRON;
1102 CMD(sc); /* turn off interrupts */
1103 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1107 m->m_pkthdr.len = m->m_len = MCLBYTES;
1108 m_adj(m, ETHER_ALIGN); /* align IP header */
1111 * Collect the message data.
1114 mb_p = mtod(m, u_char *);
1115 bytes_in_mbuf = m->m_len;
1117 /* Put the ethernet header inside the mbuf. */
1118 bcopy(&fd.destination[0], mb_p, 14);
1121 bytes_in_mbuf -= 14;
1123 bytes = min(bytes_in_mbuf, bytes_in_msg);
1130 outw(PIOR1(base), rbd.buffer_addr);
1131 insw(PIOP1(base), mb_p, len/2);
1134 if (bytes > bytes_in_mbuf) {
1135 /* XXX something wrong, a packet should fit in 1 cluster */
1137 printf("wl%d read(): packet too large (%u > %u)\n",
1138 sc->unit, bytes, bytes_in_mbuf);
1139 if (wlhwrst(sc) != TRUE) {
1140 sc->hacr &= ~HACR_INTRON;
1141 CMD(sc); /* turn off interrupts */
1142 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1147 bytes_in_mbuf -= bytes;
1148 bytes_in_msg -= bytes;
1149 if (bytes_in_msg == 0) {
1150 if (rbd.status & RBD_SW_EOF || rbd.next_rbd_offset == I82586NULL) {
1153 outw(PIOR1(base), rbd.next_rbd_offset);
1154 insw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1155 bytes_in_msg = rbd.status & RBD_SW_COUNT;
1157 rbd.buffer_addr += bytes;
1160 bytes = min(bytes_in_mbuf, bytes_in_msg);
1163 m->m_pkthdr.len = m->m_len = mlen;
1164 m->m_pkthdr.rcvif = ifp;
1167 * If hw is in promiscuous mode (note that I said hardware, not if
1168 * IFF_PROMISC is set in ifnet flags), then if this is a unicast
1169 * packet and the MAC dst is not us, drop it. This check in normally
1170 * inside ether_input(), but IFF_MULTI causes hw promisc without
1171 * a bpf listener, so this is wrong.
1172 * Greg Troxel <gdt@ir.bbn.com>, 1998-08-07
1175 * TBD: also discard packets where NWID does not match.
1176 * However, there does not appear to be a way to read the nwid
1177 * for a received packet. -gdt 1998-08-07
1179 /* XXX verify mbuf length */
1180 eh = mtod(m, struct ether_header *);
1182 #ifdef WL_USE_IFNET_PROMISC_CHECK /* not defined */
1183 (sc->ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1185 /* hw is in promisc mode if this is true */
1186 (sc->mode & (MOD_PROM | MOD_ENAL))
1189 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
1190 bcmp(eh->ether_dhost, IF_LLADDR(sc->ifp),
1191 sizeof(eh->ether_dhost)) != 0 ) {
1197 if (sc->ifp->if_flags & IFF_DEBUG)
1198 printf("wl%d: wlrecv %u bytes\n", sc->unit, mlen);
1202 wl_cache_store(sc, base, eh, m);
1206 * received packet is now in a chain of mbuf's. next step is
1207 * to pass the packet upwards.
1210 (*ifp->if_input)(ifp, m);
1218 * This routine processes an ioctl request from the "if" layer
1221 * input : pointer the appropriate "if" struct, command, and data
1222 * output : based on command appropriate action is taken on the
1223 * WaveLAN board(s) or related structures
1224 * return : error is returned containing exit conditions
1228 wlioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1230 struct ifreq *ifr = (struct ifreq *)data;
1231 struct wl_softc *sc = ifp->if_softc;
1232 short base = sc->base;
1234 int opri, error = 0;
1235 struct thread *td = curthread; /* XXX */
1236 int irq, irqval, i, isroot;
1245 if (sc->ifp->if_flags & IFF_DEBUG)
1246 printf("%s: entered wlioctl()\n", ifp->if_xname);
1251 if (ifp->if_flags & IFF_ALLMULTI) {
1254 if (ifp->if_flags & IFF_PROMISC) {
1257 if (ifp->if_flags & IFF_LINK0) {
1261 * force a complete reset if the recieve multicast/
1262 * promiscuous mode changes so that these take
1263 * effect immediately.
1266 if (sc->mode != mode) {
1268 if (sc->flags & DSF_RUNNING) {
1269 sc->flags &= ~DSF_RUNNING;
1273 /* if interface is marked DOWN and still running then
1276 if ((ifp->if_flags & IFF_UP) == 0 && sc->flags & DSF_RUNNING) {
1277 printf("%s ioctl(): board is not running\n", ifp->if_xname);
1278 sc->flags &= ~DSF_RUNNING;
1279 sc->hacr &= ~HACR_INTRON;
1280 CMD(sc); /* turn off interrupts */
1282 /* else if interface is UP and RUNNING, start it
1284 else if (ifp->if_flags & IFF_UP && (sc->flags & DSF_RUNNING) == 0) {
1288 /* if WLDEBUG set on interface, then printf rf-modem regs
1290 if (ifp->if_flags & IFF_DEBUG)
1299 #endif /* MULTICAST */
1301 /* DEVICE SPECIFIC */
1304 /* copy the PSA out to the caller */
1306 /* pointer to buffer in user space */
1307 up = (void *)ifr->ifr_data;
1308 /* work out if they're root */
1309 isroot = (priv_check(td, PRIV_NET80211_GETKEY) == 0);
1311 for (i = 0; i < 0x40; i++) {
1312 /* don't hand the DES key out to non-root users */
1313 if ((i > WLPSA_DESKEY) && (i < (WLPSA_DESKEY + 8)) && !isroot)
1315 if (subyte((up + i), sc->psa[i])) {
1323 /* copy the PSA in from the caller; we only copy _some_ values */
1326 if ((error = priv_check(td, PRIV_DRIVER)))
1328 error = EINVAL; /* assume the worst */
1329 /* pointer to buffer in user space containing data */
1330 up = (void *)ifr->ifr_data;
1332 /* check validity of input range */
1333 for (i = 0; i < 0x40; i++)
1334 if (fubyte(up + i) < 0) {
1339 /* check IRQ value */
1340 irqval = fubyte(up+WLPSA_IRQNO);
1341 for (irq = 15; irq >= 0; irq--)
1342 if (irqvals[irq] == irqval)
1344 if (irq == 0) /* oops */
1347 sc->psa[WLPSA_IRQNO] = irqval;
1350 for (i = 0; i < 6; i++)
1351 sc->psa[WLPSA_LOCALMAC+i] = fubyte(up+WLPSA_LOCALMAC+i);
1354 sc->psa[WLPSA_MACSEL] = fubyte(up+WLPSA_MACSEL);
1357 sc->psa[WLPSA_NWID] = fubyte(up+WLPSA_NWID);
1358 sc->psa[WLPSA_NWID+1] = fubyte(up+WLPSA_NWID+1);
1361 wlsetpsa(sc); /* update the PSA */
1365 /* get the current NWID out of the sc since we stored it there */
1367 ifr->ifr_data = (caddr_t) (sc->nwid[0] << 8 | sc->nwid[1]);
1372 * change the nwid dynamically. This
1373 * ONLY changes the radio modem and does not
1377 * 1. save in softc "soft registers"
1378 * 2. save in radio modem (MMC)
1382 if ((error = priv_check(td, PRIV_DRIVER)))
1384 if (!(ifp->if_flags & IFF_UP)) {
1385 error = EIO; /* only allowed while up */
1388 * soft c nwid shadows radio modem setting
1390 sc->nwid[0] = (int)ifr->ifr_data >> 8;
1391 sc->nwid[1] = (int)ifr->ifr_data & 0xff;
1392 MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]);
1393 MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]);
1397 /* copy the EEPROM in 2.4 Gz WaveMODEM out to the caller */
1400 if ((error = priv_check(td, PRIV_DRIVER)))
1402 /* pointer to buffer in user space */
1403 up = (void *)ifr->ifr_data;
1405 for (i=0x00; i<0x80; ++i) { /* 2.4 Gz: size of EEPROM */
1406 MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */
1407 MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */
1408 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */
1409 DELAY(40); /* 2.4 Gz */
1410 if (subyte(up + 2*i, /* 2.4 Gz: pass low byte of */
1411 wlmmcread(base,MMC_EEDATALrv))) {/* 2.4 Gz: EEPROM word */
1413 return(EFAULT); /* 2.4 Gz: */
1415 if (subyte(up + 2*i+1, /* 2.4 Gz: pass hi byte of */
1416 wlmmcread(base,MMC_EEDATALrv))) {/* 2.4 Gz: EEPROM word */
1418 return(EFAULT); /* 2.4 Gz: */
1424 /* zero (Delete) the wl cache */
1427 if ((error = priv_check(td, PRIV_DRIVER)))
1432 /* read out the number of used cache elements */
1434 ifr->ifr_data = (caddr_t) sc->w_sigitems;
1437 /* read out the wl cache */
1439 /* pointer to buffer in user space */
1440 up = (void *)ifr->ifr_data;
1441 cpt = (char *) &sc->w_sigcache[0];
1442 size = sc->w_sigitems * sizeof(struct w_sigcache);
1444 for (i = 0; i < size; i++) {
1445 if (subyte((up + i), *cpt++)) {
1454 error = ether_ioctl(ifp, cmd, data);
1465 * Called if the timer set in wlstart expires before an interrupt is received
1466 * from the wavelan. It seems to lose interrupts sometimes.
1467 * The watchdog routine gets called if the transmitter failed to interrupt
1469 * input : which board is timing out
1470 * output : board reset
1474 wlwatchdog(void *vsc)
1476 struct wl_softc *sc = vsc;
1477 int unit = sc->unit;
1479 log(LOG_ERR, "wl%d: wavelan device timeout on xmit\n", unit);
1481 sc->ifp->if_oerrors++;
1489 * This function is the interrupt handler for the WaveLAN
1490 * board. This routine will be called whenever either a packet
1491 * is received, or a packet has successfully been transfered and
1492 * the unit is ready to transmit another packet.
1494 * input : board number that interrupted
1495 * output : either a packet is received, or a packet is transfered
1501 struct wl_softc *sc = (struct wl_softc *)arg;
1502 short base = sc->base;
1504 u_short int_type, int_type1;
1508 if (sc->ifp->if_flags & IFF_DEBUG)
1509 printf("wl%d: wlintr() called\n", sc->unit);
1512 if ((int_type = inw(HASR(base))) & HASR_MMC_INTR) {
1513 /* handle interrupt from the modem management controler */
1514 /* This will clear the interrupt condition */
1515 (void) wlmmcread(base,MMC_DCE_STATUS); /* ignored for now */
1518 if (!(int_type & HASR_INTR)){ /* return if no interrupt from 82586 */
1519 /* commented out. jrb. it happens when reinit occurs
1520 printf("wlintr: int_type %x, dump follows\n", int_type);
1530 outw(PIOR0(base), OFFSET_SCB + 0); /* get scb status */
1531 int_type = (inw(PIOP0(base)) & SCB_SW_INT);
1532 if (int_type == 0) /* no interrupts left */
1535 int_type1 = wlack(sc); /* acknowledge interrupt(s) */
1536 /* make sure no bits disappeared (others may appear) */
1537 if ((int_type & int_type1) != int_type)
1538 printf("wlack() int bits disappeared : %04x != int_type %04x\n",
1539 int_type1, int_type);
1540 int_type = int_type1; /* go with the new status */
1544 if (int_type & SCB_SW_FR) {
1545 sc->ifp->if_ipackets++;
1549 * receiver not ready
1551 if (int_type & SCB_SW_RNR) {
1552 sc->ifp->if_ierrors++;
1554 if (sc->ifp->if_flags & IFF_DEBUG)
1555 printf("wl%d intr(): receiver overrun! begin_fd = %x\n",
1556 sc->unit, sc->begin_fd);
1563 if (int_type & SCB_SW_CNA) {
1565 * At present, we don't care about CNA's. We
1566 * believe they are a side effect of XMT.
1569 if (int_type & SCB_SW_CX) {
1571 * At present, we only request Interrupt for
1574 outw(PIOR1(base), OFFSET_CU); /* get command status */
1575 ac_status = inw(PIOP1(base));
1577 if (xmt_watch) { /* report some anomalies */
1579 if (sc->tbusy == 0) {
1580 printf("wl%d: xmt intr but not busy, CU %04x\n",
1581 sc->unit, ac_status);
1583 if (ac_status == 0) {
1584 printf("wl%d: xmt intr but ac_status == 0\n", sc->unit);
1586 if (ac_status & AC_SW_A) {
1587 printf("wl%d: xmt aborted\n", sc->unit);
1590 if (ac_status & TC_CARRIER) {
1591 printf("wl%d: no carrier\n", sc->unit);
1594 if (ac_status & TC_CLS) {
1595 printf("wl%d: no CTS\n", sc->unit);
1597 if (ac_status & TC_DMA) {
1598 printf("wl%d: DMA underrun\n", sc->unit);
1600 if (ac_status & TC_DEFER) {
1601 printf("wl%d: xmt deferred\n", sc->unit);
1603 if (ac_status & TC_SQE) {
1604 printf("wl%d: heart beat\n", sc->unit);
1606 if (ac_status & TC_COLLISION) {
1607 printf("wl%d: too many collisions\n", sc->unit);
1610 /* if the transmit actually failed, or returned some status */
1611 if ((!(ac_status & AC_SW_OK)) || (ac_status & 0xfff)) {
1612 if (ac_status & (TC_COLLISION | TC_CLS | TC_DMA)) {
1613 sc->ifp->if_oerrors++;
1615 /* count collisions */
1616 sc->ifp->if_collisions += (ac_status & 0xf);
1617 /* if TC_COLLISION set and collision count zero, 16 collisions */
1618 if ((ac_status & 0x20) == 0x20) {
1619 sc->ifp->if_collisions += 0x10;
1623 untimeout(wlwatchdog, sc, sc->watchdog_ch);
1624 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1635 * This routine is called by the interrupt handler to initiate a
1636 * packet transfer from the board to the "if" layer above this
1637 * driver. This routine checks if a buffer has been successfully
1638 * received by the WaveLAN. If so, the routine wlread is called
1639 * to do the actual transfer of the board data (including the
1640 * ethernet header) into a packet (consisting of an mbuf chain).
1642 * input : number of the board to check
1643 * output : if a packet is available, it is "sent up"
1647 wlrcv(struct wl_softc *sc)
1649 short base = sc->base;
1650 u_short fd_p, status, offset, link_offset;
1653 if (sc->ifp->if_flags & IFF_DEBUG)
1654 printf("wl%d: entered wlrcv()\n", sc->unit);
1656 for (fd_p = sc->begin_fd; fd_p != I82586NULL; fd_p = sc->begin_fd) {
1658 outw(PIOR0(base), fd_p + 0); /* address of status */
1659 status = inw(PIOP0(base));
1660 outw(PIOR1(base), fd_p + 4); /* address of link_offset */
1661 link_offset = inw(PIOP1(base));
1662 offset = inw(PIOP1(base)); /* rbd_offset */
1663 if (status == 0xffff || offset == 0xffff /*I82586NULL*/) {
1664 if (wlhwrst(sc) != TRUE)
1665 printf("wl%d rcv(): hwrst ffff trouble.\n", sc->unit);
1667 } else if (status & AC_SW_C) {
1668 if (status == (RFD_DONE|RFD_RSC)) {
1671 if (sc->ifp->if_flags & IFF_DEBUG)
1672 printf("wl%d RCV: RSC %x\n", sc->unit, status);
1674 sc->ifp->if_ierrors++;
1675 } else if (!(status & RFD_OK)) {
1676 printf("wl%d RCV: !OK %x\n", sc->unit, status);
1677 sc->ifp->if_ierrors++;
1678 } else if (status & 0xfff) { /* can't happen */
1679 printf("wl%d RCV: ERRs %x\n", sc->unit, status);
1680 sc->ifp->if_ierrors++;
1681 } else if (!wlread(sc, fd_p))
1684 if (!wlrequeue(sc, fd_p)) {
1685 /* abort on chain error */
1686 if (wlhwrst(sc) != TRUE)
1687 printf("wl%d rcv(): hwrst trouble.\n", sc->unit);
1690 sc->begin_fd = link_offset;
1701 * This routine puts rbd's used in the last receive back onto the
1702 * free list for the next receive.
1706 wlrequeue(struct wl_softc *sc, u_short fd_p)
1708 short base = sc->base;
1710 u_short l_rbdp, f_rbdp, rbd_offset;
1712 outw(PIOR0(base), fd_p + 6);
1713 rbd_offset = inw(PIOP0(base));
1714 if ((f_rbdp = rbd_offset) != I82586NULL) {
1717 outw(PIOR0(base), l_rbdp + 0); /* address of status */
1718 if (inw(PIOP0(base)) & RBD_SW_EOF)
1720 outw(PIOP0(base), 0);
1721 outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */
1722 if ((l_rbdp = inw(PIOP0(base))) == I82586NULL)
1725 outw(PIOP0(base), 0);
1726 outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */
1727 outw(PIOP0(base), I82586NULL);
1728 outw(PIOR0(base), l_rbdp + 8); /* address of size */
1729 outw(PIOP0(base), inw(PIOP0(base)) | AC_CW_EL);
1730 outw(PIOR0(base), sc->end_rbd + 2);
1731 outw(PIOP0(base), f_rbdp); /* end_rbd->next_rbd_offset */
1732 outw(PIOR0(base), sc->end_rbd + 8); /* size */
1733 outw(PIOP0(base), inw(PIOP0(base)) & ~AC_CW_EL);
1734 sc->end_rbd = l_rbdp;
1738 fd.command = AC_CW_EL;
1739 fd.link_offset = I82586NULL;
1740 fd.rbd_offset = I82586NULL;
1741 outw(PIOR1(base), fd_p);
1742 outsw(PIOP1(base), &fd, 8/2);
1744 outw(PIOR1(base), sc->end_fd + 2); /* addr of command */
1745 outw(PIOP1(base), 0); /* command = 0 */
1746 outw(PIOP1(base), fd_p); /* end_fd->link_offset = fd_p */
1753 static int xmt_debug = 0;
1754 #endif /* WLDEBUG */
1759 * This routine fills in the appropriate registers and memory
1760 * locations on the WaveLAN board and starts the board off on
1763 * input : pointers to board of interest's softc and the mbuf
1764 * output : board memory and registers are set for xfer and attention
1768 wlxmt(struct wl_softc *sc, struct mbuf *m)
1770 u_short xmtdata_p = OFFSET_TBUF;
1772 struct mbuf *tm_p = m;
1773 struct ether_header *eh_p = mtod(m, struct ether_header *);
1774 u_char *mb_p = mtod(m, u_char *) + sizeof(struct ether_header);
1775 u_short count = m->m_len - sizeof(struct ether_header);
1777 u_short tbd_p = OFFSET_TBD;
1778 u_short len, clen = 0;
1779 short base = sc->base;
1783 if (sc->ifp->if_flags & IFF_DEBUG)
1784 printf("%s: entered wlxmt()\n", sc->ifp->if_xname);
1788 cb.ac_command = (AC_CW_EL|AC_TRANSMIT|AC_CW_I);
1789 cb.ac_link_offset = I82586NULL;
1790 outw(PIOR1(base), OFFSET_CU);
1791 outsw(PIOP1(base), &cb, 6/2);
1792 outw(PIOP1(base), OFFSET_TBD); /* cb.cmd.transmit.tbd_offset */
1793 outsw(PIOP1(base), eh_p->ether_dhost, WAVELAN_ADDR_SIZE/2);
1794 outw(PIOP1(base), eh_p->ether_type);
1797 if (sc->ifp->if_flags & IFF_DEBUG) {
1799 printf("XMT mbuf: L%d @%p ", count, (void *)mb_p);
1800 printf("ether type %x\n", eh_p->ether_type);
1803 #endif /* WLDEBUG */
1804 outw(PIOR0(base), OFFSET_TBD);
1805 outw(PIOP0(base), 0); /* act_count */
1806 outw(PIOR1(base), OFFSET_TBD + 4);
1807 outw(PIOP1(base), xmtdata_p); /* buffer_addr */
1808 outw(PIOP1(base), 0); /* buffer_base */
1811 if (clen + count > WAVELAN_MTU)
1817 outw(PIOR1(base), xmtdata_p);
1818 outsw(PIOP1(base), mb_p, len/2);
1820 outw(PIOR0(base), tbd_p); /* address of act_count */
1821 outw(PIOP0(base), inw(PIOP0(base)) + count);
1823 if ((tm_p = tm_p->m_next) == (struct mbuf *)0)
1826 /* go to the next descriptor */
1827 outw(PIOR0(base), tbd_p + 2);
1828 tbd_p += sizeof (tbd_t);
1829 outw(PIOP0(base), tbd_p); /* next_tbd_offset */
1830 outw(PIOR0(base), tbd_p);
1831 outw(PIOP0(base), 0); /* act_count */
1832 outw(PIOR1(base), tbd_p + 4);
1833 outw(PIOP1(base), xmtdata_p); /* buffer_addr */
1834 outw(PIOP1(base), 0); /* buffer_base */
1835 /* at the end -> coallesce remaining mbufs */
1836 if (tbd_p == OFFSET_TBD + (N_TBD-1) * sizeof (tbd_t)) {
1837 wlsftwsleaze(&count, &mb_p, &tm_p, sc);
1840 /* next mbuf short -> coallesce as needed */
1841 if ( (tm_p->m_next == (struct mbuf *) 0) ||
1842 #define HDW_THRESHOLD 55
1843 tm_p->m_len > HDW_THRESHOLD)
1846 wlhdwsleaze(&count, &mb_p, &tm_p, sc);
1850 } else if ((tm_p = tm_p->m_next) == (struct mbuf *)0)
1852 count = tm_p->m_len;
1853 mb_p = mtod(tm_p, u_char *);
1855 if (sc->ifp->if_flags & IFF_DEBUG)
1857 printf("mbuf+ L%d @%p ", count, (void *)mb_p);
1858 #endif /* WLDEBUG */
1861 if (sc->ifp->if_flags & IFF_DEBUG)
1863 printf("CLEN = %d\n", clen);
1864 #endif /* WLDEBUG */
1865 outw(PIOR0(base), tbd_p);
1866 if (clen < ETHERMIN) {
1867 outw(PIOP0(base), inw(PIOP0(base)) + ETHERMIN - clen);
1868 outw(PIOR1(base), xmtdata_p);
1869 for (xmtshort_p = xmtdata_p; clen < ETHERMIN; clen += 2)
1870 outw(PIOP1(base), 0);
1872 outw(PIOP0(base), inw(PIOP0(base)) | TBD_SW_EOF);
1873 outw(PIOR0(base), tbd_p + 2);
1874 outw(PIOP0(base), I82586NULL);
1876 if (sc->ifp->if_flags & IFF_DEBUG) {
1882 #endif /* WLDEBUG */
1884 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
1886 * wait for 586 to clear previous command, complain if it takes
1889 for (spin = 1;;spin = (spin + 1) % 10000) {
1890 if (inw(PIOP0(base)) == 0) { /* it's done, we can go */
1893 if ((spin == 0) && xmt_watch) { /* not waking up, and we care */
1894 printf("%s: slow accepting xmit\n", sc->ifp->if_xname);
1897 outw(PIOP0(base), SCB_CU_STRT); /* new command */
1903 * Pause to avoid transmit overrun problems.
1904 * The required delay tends to vary with platform type, and may be
1905 * related to interrupt loss.
1907 if (wl_xmit_delay) {
1908 DELAY(wl_xmit_delay);
1916 * This function builds the linear linked lists of fd's and
1917 * rbd's. Based on page 4-32 of 1986 Intel microcom handbook.
1921 wlbldru(struct wl_softc *sc)
1923 short base = sc->base;
1926 u_short fd_p = OFFSET_RU;
1927 u_short rbd_p = OFFSET_RBD;
1930 sc->begin_fd = fd_p;
1931 for (i = 0; i < N_FD; i++) {
1934 fd.link_offset = fd_p + sizeof(fd_t);
1935 fd.rbd_offset = I82586NULL;
1936 outw(PIOR1(base), fd_p);
1937 outsw(PIOP1(base), &fd, 8/2);
1938 fd_p = fd.link_offset;
1940 fd_p -= sizeof(fd_t);
1942 outw(PIOR1(base), fd_p + 2);
1943 outw(PIOP1(base), AC_CW_EL); /* command */
1944 outw(PIOP1(base), I82586NULL); /* link_offset */
1947 outw(PIOR0(base), fd_p + 6); /* address of rbd_offset */
1948 outw(PIOP0(base), rbd_p);
1949 outw(PIOR1(base), rbd_p);
1950 for (i = 0; i < N_RBD; i++) {
1952 rbd.buffer_addr = rbd_p + sizeof(rbd_t) + 2;
1953 rbd.buffer_base = 0;
1954 rbd.size = RCVBUFSIZE;
1956 rbd_p += sizeof(ru_t);
1957 rbd.next_rbd_offset = rbd_p;
1959 rbd.next_rbd_offset = I82586NULL;
1960 rbd.size |= AC_CW_EL;
1961 sc->end_rbd = rbd_p;
1963 outsw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1964 outw(PIOR1(base), rbd_p);
1966 return sc->begin_fd;
1972 * This routine starts the receive unit running. First checks if the
1973 * board is actually ready, then the board is instructed to receive
1978 wlrustrt(struct wl_softc *sc)
1980 short base = sc->base;
1984 if (sc->ifp->if_flags & IFF_DEBUG)
1985 printf("wl%d: entered wlrustrt()\n", sc->unit);
1987 outw(PIOR0(base), OFFSET_SCB);
1988 if (inw(PIOP0(base)) & SCB_RUS_READY){
1989 printf("wlrustrt: RUS_READY\n");
1993 outw(PIOR0(base), OFFSET_SCB + 2);
1994 outw(PIOP0(base), SCB_RU_STRT); /* command */
1996 outw(PIOR0(base), OFFSET_SCB + 6); /* address of scb_rfa_offset */
1997 outw(PIOP0(base), rfa);
2006 * This routine does a 586 op-code number 7, and obtains the
2007 * diagnose status for the WaveLAN.
2011 wldiag(struct wl_softc *sc)
2013 short base = sc->base;
2017 if (sc->ifp->if_flags & IFF_DEBUG)
2018 printf("wl%d: entered wldiag()\n", sc->unit);
2020 outw(PIOR0(base), OFFSET_SCB);
2021 status = inw(PIOP0(base));
2022 if (status & SCB_SW_INT) {
2023 /* state is 2000 which seems ok
2024 printf("wl%d diag(): unexpected initial state %\n",
2025 sc->unit, inw(PIOP0(base)));
2029 outw(PIOR1(base), OFFSET_CU);
2030 outw(PIOP1(base), 0); /* ac_status */
2031 outw(PIOP1(base), AC_DIAGNOSE|AC_CW_EL);/* ac_command */
2032 if (wlcmd(sc, "diag()") == 0)
2034 outw(PIOR0(base), OFFSET_CU);
2035 if (inw(PIOP0(base)) & 0x0800) {
2036 printf("wl%d: i82586 Self Test failed!\n", sc->unit);
2045 * This routine does a standard config of the WaveLAN board.
2049 wlconfig(struct wl_softc *sc)
2051 configure_t configure;
2052 short base = sc->base;
2055 struct ifmultiaddr *ifma;
2058 #endif /* MULTICAST */
2061 if (sc->ifp->if_flags & IFF_DEBUG)
2062 printf("wl%d: entered wlconfig()\n", sc->unit);
2064 outw(PIOR0(base), OFFSET_SCB);
2065 if (inw(PIOP0(base)) & SCB_SW_INT) {
2067 printf("wl%d config(): unexpected initial state %x\n",
2068 sc->unit, inw(PIOP0(base)));
2073 outw(PIOR1(base), OFFSET_CU);
2074 outw(PIOP1(base), 0); /* ac_status */
2075 outw(PIOP1(base), AC_CONFIGURE|AC_CW_EL); /* ac_command */
2078 configure.fifolim_bytecnt = 0x080c;
2079 configure.addrlen_mode = 0x0600;
2080 configure.linprio_interframe = 0x2060;
2081 configure.slot_time = 0xf200;
2082 configure.hardware = 0x0008; /* tx even w/o CD */
2083 configure.min_frame_len = 0x0040;
2085 /* This is the configuration block suggested by Marc Meertens
2086 * <mmeerten@obelix.utrecht.NCR.COM> in an e-mail message to John
2087 * Ioannidis on 10 Nov 92.
2089 configure.fifolim_bytecnt = 0x040c;
2090 configure.addrlen_mode = 0x0600;
2091 configure.linprio_interframe = 0x2060;
2092 configure.slot_time = 0xf000;
2093 configure.hardware = 0x0008; /* tx even w/o CD */
2094 configure.min_frame_len = 0x0040;
2097 * below is the default board configuration from p2-28 from 586 book
2099 configure.fifolim_bytecnt = 0x080c;
2100 configure.addrlen_mode = 0x2600;
2101 configure.linprio_interframe = 0x7820; /* IFS=120, ACS=2 */
2102 configure.slot_time = 0xf00c; /* slottime=12 */
2103 configure.hardware = 0x0008; /* tx even w/o CD */
2104 configure.min_frame_len = 0x0040;
2106 if (sc->mode & (MOD_PROM | MOD_ENAL))
2107 configure.hardware |= 1;
2108 outw(PIOR1(base), OFFSET_CU + 6);
2109 outsw(PIOP1(base), &configure, sizeof(configure_t)/2);
2111 if (wlcmd(sc, "config()-configure") == 0)
2114 outw(PIOR1(base), OFFSET_CU);
2115 outw(PIOP1(base), 0); /* ac_status */
2116 outw(PIOP1(base), AC_MCSETUP|AC_CW_EL); /* ac_command */
2117 outw(PIOR1(base), OFFSET_CU + 8);
2118 if_maddr_rlock(sc->ifp);
2119 TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) {
2120 if (ifma->ifma_addr->sa_family != AF_LINK)
2123 addrp = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
2124 outw(PIOP1(base), addrp[0] + (addrp[1] << 8));
2125 outw(PIOP1(base), addrp[2] + (addrp[3] << 8));
2126 outw(PIOP1(base), addrp[4] + (addrp[5] << 8));
2129 if_maddr_runlock(sc->ifp);
2130 outw(PIOR1(base), OFFSET_CU + 6); /* mc-cnt */
2131 outw(PIOP1(base), cnt * WAVELAN_ADDR_SIZE);
2132 if (wlcmd(sc, "config()-mcaddress") == 0)
2134 #endif /* MULTICAST */
2136 outw(PIOR1(base), OFFSET_CU);
2137 outw(PIOP1(base), 0); /* ac_status */
2138 outw(PIOP1(base), AC_IASETUP|AC_CW_EL); /* ac_command */
2139 outw(PIOR1(base), OFFSET_CU + 6);
2140 outsw(PIOP1(base), IF_LLADDR(sc->ifp), WAVELAN_ADDR_SIZE/2);
2142 if (wlcmd(sc, "config()-address") == 0)
2153 * Set channel attention bit and busy wait until command has
2154 * completed. Then acknowledge the command completion.
2157 wlcmd(struct wl_softc *sc, char *str)
2159 short base = sc->base;
2162 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
2163 outw(PIOP0(base), SCB_CU_STRT);
2167 outw(PIOR0(base), OFFSET_CU);
2168 for (i = 0; i < 0xffff; i++)
2169 if (inw(PIOP0(base)) & AC_SW_C)
2171 if (i == 0xffff || !(inw(PIOP0(base)) & AC_SW_OK)) {
2172 printf("wl%d: %s failed; status = %d, inw = %x, outw = %x\n",
2173 sc->unit, str, inw(PIOP0(base)) & AC_SW_OK, inw(PIOP0(base)), inw(PIOR0(base)));
2174 outw(PIOR0(base), OFFSET_SCB);
2175 printf("scb_status %x\n", inw(PIOP0(base)));
2176 outw(PIOR0(base), OFFSET_SCB+2);
2177 printf("scb_command %x\n", inw(PIOP0(base)));
2178 outw(PIOR0(base), OFFSET_SCB+4);
2179 printf("scb_cbl %x\n", inw(PIOP0(base)));
2180 outw(PIOR0(base), OFFSET_CU+2);
2181 printf("cu_cmd %x\n", inw(PIOP0(base)));
2185 outw(PIOR0(base), OFFSET_SCB);
2186 if ((inw(PIOP0(base)) & SCB_SW_INT) && (inw(PIOP0(base)) != SCB_SW_CNA)) {
2188 printf("wl%d %s: unexpected final state %x\n",
2189 sc->unit, str, inw(PIOP0(base)));
2197 * wlack: if the 82596 wants attention because it has finished
2198 * sending or receiving a packet, acknowledge its desire and
2199 * return bits indicating the kind of attention. wlack() returns
2200 * these bits so that the caller can service exactly the
2201 * conditions that wlack() acknowledged.
2204 wlack(struct wl_softc *sc)
2208 short base = sc->base;
2210 outw(PIOR1(base), OFFSET_SCB);
2211 if (!(cmd = (inw(PIOP1(base)) & SCB_SW_INT)))
2214 if (sc->ifp->if_flags & IFF_DEBUG)
2215 printf("wl%d: doing a wlack()\n", sc->unit);
2217 outw(PIOP1(base), cmd);
2219 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
2220 for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); )
2223 printf("wl%d wlack(): board not accepting command.\n", sc->unit);
2229 wltbd(struct wl_softc *sc)
2231 short base = sc->base;
2232 u_short tbd_p = OFFSET_TBD;
2238 outw(PIOR1(base), tbd_p);
2239 insw(PIOP1(base), &tbd, sizeof(tbd_t)/2);
2240 sum += (tbd.act_count & ~TBD_SW_EOF);
2241 printf("%d: addr %x, count %d (%d), next %x, base %x\n",
2242 i++, tbd.buffer_addr,
2243 (tbd.act_count & ~TBD_SW_EOF), sum,
2244 tbd.next_tbd_offset, tbd.buffer_base);
2245 if (tbd.act_count & TBD_SW_EOF)
2247 tbd_p = tbd.next_tbd_offset;
2253 wlhdwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc)
2255 struct mbuf *tm_p = *tm_pp;
2256 u_char *mb_p = *mb_pp;
2262 * can we get a run that will be coallesced or
2263 * that terminates before breaking
2266 count += tm_p->m_len;
2267 if (tm_p->m_len & 1)
2269 } while ((tm_p = tm_p->m_next) != (struct mbuf *)0);
2270 if ( (tm_p == (struct mbuf *)0) ||
2271 count > HDW_THRESHOLD) {
2272 *countp = (*tm_pp)->m_len;
2273 *mb_pp = mtod((*tm_pp), u_char *);
2277 /* we need to copy */
2281 cp = (u_char *) t_packet;
2283 bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len);
2285 if (count > HDW_THRESHOLD)
2288 if (tm_p->m_next == (struct mbuf *)0)
2290 tm_p = tm_p->m_next;
2293 *mb_pp = (u_char *) t_packet;
2300 wlsftwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc)
2302 struct mbuf *tm_p = *tm_pp;
2304 u_char *cp = (u_char *) t_packet;
2307 /* we need to copy */
2309 bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len);
2312 if (tm_p->m_next == (struct mbuf *)0)
2314 tm_p = tm_p->m_next;
2318 *mb_pp = (u_char *) t_packet;
2324 wlmmcstat(struct wl_softc *sc)
2326 short base = sc->base;
2329 printf("wl%d: DCE_STATUS: 0x%x, ", sc->unit,
2330 wlmmcread(base,MMC_DCE_STATUS) & 0x0f);
2331 tmp = wlmmcread(base,MMC_CORRECT_NWID_H) << 8;
2332 tmp |= wlmmcread(base,MMC_CORRECT_NWID_L);
2333 printf("Correct NWID's: %d, ", tmp);
2334 tmp = wlmmcread(base,MMC_WRONG_NWID_H) << 8;
2335 tmp |= wlmmcread(base,MMC_WRONG_NWID_L);
2336 printf("Wrong NWID's: %d\n", tmp);
2337 printf("THR_PRE_SET: 0x%x, ", wlmmcread(base,MMC_THR_PRE_SET));
2338 printf("SIGNAL_LVL: %d, SILENCE_LVL: %d\n",
2339 wlmmcread(base,MMC_SIGNAL_LVL),
2340 wlmmcread(base,MMC_SILENCE_LVL));
2341 printf("SIGN_QUAL: 0x%x, NETW_ID: %x:%x, DES: %d\n",
2342 wlmmcread(base,MMC_SIGN_QUAL),
2343 wlmmcread(base,MMC_NETW_ID_H),
2344 wlmmcread(base,MMC_NETW_ID_L),
2345 wlmmcread(base,MMC_DES_AVAIL));
2349 wlmmcread(u_int base, u_short reg)
2351 while (inw(HASR(base)) & HASR_MMC_BUSY)
2353 outw(MMCR(base),reg << 1);
2354 while (inw(HASR(base)) & HASR_MMC_BUSY)
2356 return (u_short)inw(MMCR(base)) >> 8;
2360 getsnr(struct wl_softc *sc)
2362 MMC_WRITE(MMC_FREEZE,1);
2364 * SNR retrieval procedure :
2366 * read signal level : wlmmcread(base, MMC_SIGNAL_LVL);
2367 * read silence level : wlmmcread(base, MMC_SILENCE_LVL);
2369 MMC_WRITE(MMC_FREEZE,0);
2371 * SNR is signal:silence ratio.
2378 ** Reads the psa for the wavelan at (base) into (buf)
2381 wlgetpsa(int base, u_char *buf)
2385 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2386 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2388 for (i = 0; i < 0x40; i++) {
2389 outw(PIOR2(base), i);
2390 buf[i] = inb(PIOP2(base));
2392 PCMD(base, HACR_DEFAULT);
2393 PCMD(base, HACR_DEFAULT);
2399 ** Writes the psa for wavelan (unit) from the softc back to the
2400 ** board. Updates the CRC and sets the CRC OK flag.
2402 ** Do not call this when the board is operating, as it doesn't
2403 ** preserve the hacr.
2406 wlsetpsa(struct wl_softc *sc)
2408 short base = sc->base;
2412 crc = wlpsacrc(sc->psa); /* calculate CRC of PSA */
2413 sc->psa[WLPSA_CRCLOW] = crc & 0xff;
2414 sc->psa[WLPSA_CRCHIGH] = (crc >> 8) & 0xff;
2415 sc->psa[WLPSA_CRCOK] = 0x55; /* default to 'bad' until programming complete */
2417 oldpri = splimp(); /* ick, long pause */
2419 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2420 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2422 for (i = 0; i < 0x40; i++) {
2424 outw(PIOR2(base),i); /* write param memory */
2426 outb(PIOP2(base), sc->psa[i]);
2429 outw(PIOR2(base),WLPSA_CRCOK); /* update CRC flag*/
2431 sc->psa[WLPSA_CRCOK] = 0xaa; /* OK now */
2432 outb(PIOP2(base), 0xaa); /* all OK */
2435 PCMD(base, HACR_DEFAULT);
2436 PCMD(base, HACR_DEFAULT);
2442 ** CRC routine provided by Christopher Giordano <cgiordan@gdeb.com>,
2443 ** from original code by Tomi Mikkonen (tomitm@remedy.fi)
2446 static u_int crc16_table[16] = {
2447 0x0000, 0xCC01, 0xD801, 0x1400,
2448 0xF001, 0x3C00, 0x2800, 0xE401,
2449 0xA001, 0x6C00, 0x7800, 0xB401,
2450 0x5000, 0x9C01, 0x8801, 0x4400
2454 wlpsacrc(u_char *buf)
2459 for (i = 0; i < 0x3d; i++, buf++) {
2461 r1 = crc16_table[crc & 0xF];
2462 crc = (crc >> 4) & 0x0FFF;
2463 crc = crc ^ r1 ^ crc16_table[*buf & 0xF];
2466 r1 = crc16_table[crc & 0xF];
2467 crc = (crc >> 4) & 0x0FFF;
2468 crc = crc ^ r1 ^ crc16_table[(*buf >> 4) & 0xF];
2477 * take input packet and cache various radio hw characteristics
2478 * indexed by MAC address.
2480 * Some things to think about:
2481 * note that no space is malloced.
2482 * We might hash the mac address if the cache were bigger.
2483 * It is not clear that the cache is big enough.
2484 * It is also not clear how big it should be.
2485 * The cache is IP-specific. We don't care about that as
2486 * we want it to be IP-specific.
2487 * The last N recv. packets are saved. This will tend
2488 * to reward agents and mobile hosts that beacon.
2489 * That is probably fine for mobile ip.
2492 /* globals for wavelan signal strength cache */
2493 /* this should go into softc structure above.
2496 /* set true if you want to limit cache items to broadcast/mcast
2497 * only packets (not unicast)
2499 static int wl_cache_mcastonly = 1;
2500 SYSCTL_INT(_machdep, OID_AUTO, wl_cache_mcastonly, CTLFLAG_RW,
2501 &wl_cache_mcastonly, 0, "");
2503 /* set true if you want to limit cache items to IP packets only
2505 static int wl_cache_iponly = 1;
2506 SYSCTL_INT(_machdep, OID_AUTO, wl_cache_iponly, CTLFLAG_RW,
2507 &wl_cache_iponly, 0, "");
2509 /* zero out the cache
2512 wl_cache_zero(struct wl_softc *sc)
2515 bzero(&sc->w_sigcache[0], sizeof(struct w_sigcache) * MAXCACHEITEMS);
2517 sc->w_nextcache = 0;
2518 sc->w_wrapindex = 0;
2521 /* store hw signal info in cache.
2522 * index is MAC address, but an ip src gets stored too
2523 * There are two filters here controllable via sysctl:
2524 * throw out unicast (on by default, but can be turned off)
2525 * throw out non-ip (on by default, but can be turned off)
2528 void wl_cache_store (struct wl_softc *sc, int base, struct ether_header *eh,
2532 struct ip *ip = NULL; /* Avoid GCC warning */
2534 int signal, silence;
2535 int w_insertcache; /* computed index for cache entry storage */
2536 int ipflag = wl_cache_iponly;
2541 * 2. configurable filter to throw out unicast packets,
2542 * keep multicast only.
2546 /* reject if not IP packet
2548 if ( wl_cache_iponly && (ntohs(eh->ether_type) != 0x800)) {
2552 /* check if broadcast or multicast packet. we toss
2555 if (wl_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) {
2559 /* find the ip header. we want to store the ip_src
2560 * address. use the mtod macro(in mbuf.h)
2561 * to typecast m to struct ip *
2564 ip = mtod(m, struct ip *);
2567 /* do a linear search for a matching MAC address
2568 * in the cache table
2569 * . MAC address is 6 bytes,
2570 * . var w_nextcache holds total number of entries already cached
2572 for (i = 0; i < sc->w_nextcache; i++) {
2573 if (! bcmp(eh->ether_shost, sc->w_sigcache[i].macsrc, 6 )) {
2575 * so we already have this entry,
2576 * update the data, and LRU age
2582 /* did we find a matching mac address?
2583 * if yes, then overwrite a previously existing cache entry
2585 if (i < sc->w_nextcache ) {
2588 /* else, have a new address entry,so
2589 * add this new entry,
2590 * if table full, then we need to replace entry
2594 /* check for space in cache table
2595 * note: w_nextcache also holds number of entries
2596 * added in the cache table
2598 if ( sc->w_nextcache < MAXCACHEITEMS ) {
2599 w_insertcache = sc->w_nextcache;
2601 sc->w_sigitems = sc->w_nextcache;
2603 /* no space found, so simply wrap with wrap index
2604 * and "zap" the next entry
2607 if (sc->w_wrapindex == MAXCACHEITEMS) {
2608 sc->w_wrapindex = 0;
2610 w_insertcache = sc->w_wrapindex++;
2614 /* invariant: w_insertcache now points at some slot
2617 if (w_insertcache < 0 || w_insertcache >= MAXCACHEITEMS) {
2619 "wl_cache_store, bad index: %d of [0..%d], gross cache error\n",
2620 w_insertcache, MAXCACHEITEMS);
2624 /* store items in cache
2627 * .signal (0..63) ,silence (0..63) ,quality (0..15)
2630 sc->w_sigcache[w_insertcache].ipsrc = ip->ip_src.s_addr;
2632 bcopy( eh->ether_shost, sc->w_sigcache[w_insertcache].macsrc, 6);
2633 signal = sc->w_sigcache[w_insertcache].signal = wlmmcread(base, MMC_SIGNAL_LVL) & 0x3f;
2634 silence = sc->w_sigcache[w_insertcache].silence = wlmmcread(base, MMC_SILENCE_LVL) & 0x3f;
2635 sc->w_sigcache[w_insertcache].quality = wlmmcread(base, MMC_SIGN_QUAL) & 0x0f;
2637 sc->w_sigcache[w_insertcache].snr =
2640 sc->w_sigcache[w_insertcache].snr = 0;
2644 #endif /* WLCACHE */