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_arp.h>
213 #include <net/if_dl.h>
214 #include <net/if_types.h>
217 #include <netinet/in.h>
218 #include <netinet/in_systm.h>
219 #include <netinet/ip.h>
220 #include <netinet/if_ether.h>
224 #include <isa/isavar.h>
226 /* was 1000 in original, fed to DELAY(x) */
227 #define DELAYCONST 1000
228 #include <dev/wl/if_wl_i82586.h> /* Definitions for the Intel chip */
229 #include <dev/wl/if_wl.h>
230 #include <machine/if_wl_wavelan.h>
232 static char t_packet[ETHERMTU + sizeof(struct ether_header) + sizeof(long)];
237 u_char nwid[2]; /* current radio modem nwid */
241 int tbusy; /* flag to determine if xmit is busy */
245 u_short hacr; /* latest host adapter CR command */
247 u_char chan24; /* 2.4 Gz: channel number/EEPROM Area # */
248 u_short freq24; /* 2.4 Gz: resulting frequency */
251 struct resource *res_ioport;
252 struct resource *res_irq;
255 bus_space_handle_t bh;
257 struct callout_handle watchdog_ch;
259 int w_sigitems; /* number of cached entries */
260 /* array of cache entries */
261 struct w_sigcache w_sigcache[ MAXCACHEITEMS ];
262 int w_nextcache; /* next free cache entry */
263 int w_wrapindex; /* next "free" cache entry */
267 #define WL_LOCK(_sc) mtx_lock(&(_sc)->wl_mtx)
268 #define WL_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->wl_mtx, MA_OWNED)
269 #define WL_UNLOCK(_sc) mtx_unlock(&(_sc)->wl_mtx)
271 static int wlprobe(device_t);
272 static int wlattach(device_t);
273 static int wldetach(device_t);
275 static device_method_t wl_methods[] = {
276 DEVMETHOD(device_probe, wlprobe),
277 DEVMETHOD(device_attach, wlattach),
278 DEVMETHOD(device_detach, wldetach),
282 static driver_t wl_driver = {
285 sizeof (struct wl_softc)
288 devclass_t wl_devclass;
289 DRIVER_MODULE(wl, isa, wl_driver, wl_devclass, 0, 0);
290 MODULE_DEPEND(wl, isa, 1, 1, 1);
291 MODULE_DEPEND(wl, ether, 1, 1, 1);
293 static struct isa_pnp_id wl_ids[] = {
298 * XXX The Wavelan appears to be prone to dropping stuff if you talk to
299 * it too fast. This disgusting hack inserts a delay after each packet
300 * is queued which helps avoid this behaviour on fast systems.
302 static int wl_xmit_delay = 250;
303 SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_delay, CTLFLAG_RW, &wl_xmit_delay, 0, "");
306 * not XXX, but ZZZ (bizarre).
307 * promiscuous mode can be toggled to ignore NWIDs. By default,
308 * it does not. Caution should be exercised about combining
309 * this mode with IFF_ALLMULTI which puts this driver in
312 static int wl_ignore_nwid = 0;
313 SYSCTL_INT(_machdep, OID_AUTO, wl_ignore_nwid, CTLFLAG_RW, &wl_ignore_nwid, 0, "");
316 * Emit diagnostics about transmission problems
318 static int xmt_watch = 0;
319 SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_watch, CTLFLAG_RW, &xmt_watch, 0, "");
322 * Collect SNR statistics
324 static int gathersnr = 0;
325 SYSCTL_INT(_machdep, OID_AUTO, wl_gather_snr, CTLFLAG_RW, &gathersnr, 0, "");
327 static int wl_allocate_resources(device_t device);
328 static int wl_deallocate_resources(device_t device);
329 static void wlstart(struct ifnet *ifp);
330 static void wlinit(void *xsc);
331 static int wlioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
332 static timeout_t wlwatchdog;
333 static void wlintr(void *arg);
334 static void wlxmt(struct wl_softc *sc, struct mbuf *m);
335 static int wldiag(struct wl_softc *sc);
336 static int wlconfig(struct wl_softc *sc);
337 static int wlcmd(struct wl_softc *sc, char *str);
338 static void wlmmcstat(struct wl_softc *sc);
339 static u_short wlbldru(struct wl_softc *sc);
340 static u_short wlmmcread(u_int base, u_short reg);
341 static void wlinitmmc(struct wl_softc *sc);
342 static int wlhwrst(struct wl_softc *sc);
343 static void wlrustrt(struct wl_softc *sc);
344 static void wlbldcu(struct wl_softc *sc);
345 static int wlack(struct wl_softc *sc);
346 static int wlread(struct wl_softc *sc, u_short fd_p);
347 static void getsnr(struct wl_softc *sc);
348 static void wlrcv(struct wl_softc *sc);
349 static int wlrequeue(struct wl_softc *sc, u_short fd_p);
350 static void wlsftwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc);
351 static void wlhdwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc);
353 static void wltbd(struct wl_softc *sc);
355 static void wlgetpsa(int base, u_char *buf);
356 static void wlsetpsa(struct wl_softc *sc);
357 static u_short wlpsacrc(u_char *buf);
358 static void wldump(struct wl_softc *sc);
360 static void wl_cache_store(struct wl_softc *, int, struct ether_header *, struct mbuf *);
361 static void wl_cache_zero(struct wl_softc *sc);
364 /* array for maping irq numbers to values for the irq parameter register */
365 static int irqvals[16] = {
366 0, 0, 0, 0x01, 0x02, 0x04, 0, 0x08, 0, 0, 0x10, 0x20, 0x40, 0, 0, 0x80
372 * This function "probes" or checks for the WaveLAN board on the bus to
373 * see if it is there. As far as I can tell, the best break between this
374 * routine and the attach code is to simply determine whether the board
375 * is configured in properly. Currently my approach to this is to write
376 * and read a word from the SRAM on the board being probed. If the word
377 * comes back properly then we assume the board is there. The config
378 * code expects to see a successful return from the probe routine before
379 * attach will be called.
381 * input : address device is mapped to, and unit # being checked
382 * output : a '1' is returned if the board exists, and a 0 otherwise
386 wlprobe(device_t device)
390 char *str = "wl%d: board out of range [0..%d]\n";
392 unsigned long junk, oldpri, sirq;
395 error = ISA_PNP_PROBE(device_get_parent(device), device, wl_ids);
396 if (error == ENXIO || error == 0)
399 sc = device_get_softc(device);
400 error = wl_allocate_resources(device);
404 base = rman_get_start(sc->res_ioport);
407 * regular CMD() will not work, since no softc yet
409 #define PCMD(base, hacr) outw((base), (hacr))
412 PCMD(base, HACR_RESET); /* reset the board */
413 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
414 PCMD(base, HACR_RESET); /* reset the board */
415 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
418 /* clear reset command and set PIO#1 in autoincrement mode */
419 PCMD(base, HACR_DEFAULT);
420 PCMD(base, HACR_DEFAULT);
421 outw(PIOR1(base), 0); /* go to beginning of RAM */
422 outsw(PIOP1(base), str, strlen(str)/2+1); /* write string */
424 outw(PIOR1(base), 0); /* rewind */
425 insw(PIOP1(base), inbuf, strlen(str)/2+1); /* read result */
427 if (bcmp(str, inbuf, strlen(str))) {
432 sc->chan24 = 0; /* 2.4 Gz: config channel */
433 sc->freq24 = 0; /* 2.4 Gz: frequency */
435 /* read the PSA from the board into temporary storage */
436 wlgetpsa(base, inbuf);
438 /* We read the IRQ value from the PSA on the board. */
439 for (irq = 15; irq >= 0; irq--)
440 if (irqvals[irq] == inbuf[WLPSA_IRQNO])
442 if ((irq == 0) || (irqvals[irq] == 0)){
443 printf("wl%d: PSA corrupt (invalid IRQ value)\n",
444 device_get_unit(device));
447 * If the IRQ requested by the PSA is already claimed by another
448 * device, the board won't work, but the user can still access the
449 * driver to change the IRQ.
451 if (bus_get_resource(device, SYS_RES_IRQ, 0, &sirq, &junk))
453 if (irq != (int)sirq)
454 printf("wl%d: board is configured for interrupt %d\n",
455 device_get_unit(device), irq);
457 wl_deallocate_resources(device);
461 wl_deallocate_resources(device);
468 * This function attaches a WaveLAN board to the "system". The rest of
469 * runtime structures are initialized here (this routine is called after
470 * a successful probe of the board). Once the ethernet address is read
471 * and stored, the board's ifnet structure is attached and readied.
473 * input : isa_dev structure setup in autoconfig
474 * output : board structs and ifnet is setup
478 wlattach(device_t device)
487 sc = device_get_softc(device);
488 ifp = sc->ifp = if_alloc(IFT_ETHER);
490 device_printf(device, "can not if_alloc()\n");
494 mtx_init(&sc->wl_mtx, device_get_nameunit(device), MTX_NETWORK_LOCK,
495 MTX_DEF | MTX_RECURSE);
497 error = wl_allocate_resources(device);
499 wl_deallocate_resources(device);
503 base = rman_get_start(sc->res_ioport);
504 unit = device_get_unit(device);
507 printf("wlattach: base %x, unit %d\n", base, unit);
514 sc->hacr = HACR_RESET;
515 callout_handle_init(&sc->watchdog_ch);
516 CMD(sc); /* reset the board */
517 DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */
519 /* clear reset command and set PIO#2 in parameter access mode */
520 sc->hacr = (HACR_DEFAULT & ~HACR_16BITS);
523 /* Read the PSA from the board for our later reference */
524 wlgetpsa(base, sc->psa);
527 sc->nwid[0] = sc->psa[WLPSA_NWID];
528 sc->nwid[1] = sc->psa[WLPSA_NWID+1];
530 /* fetch MAC address - decide which one first */
531 if (sc->psa[WLPSA_MACSEL] & 1)
535 for (i=0; i < WAVELAN_ADDR_SIZE; ++i)
536 eaddr[i] = sc->psa[j + i];
538 /* enter normal 16 bit mode operation */
539 sc->hacr = HACR_DEFAULT;
543 outw(PIOR1(base), OFFSET_SCB + 8); /* address of scb_crcerrs */
544 outw(PIOP1(base), 0); /* clear scb_crcerrs */
545 outw(PIOP1(base), 0); /* clear scb_alnerrs */
546 outw(PIOP1(base), 0); /* clear scb_rscerrs */
547 outw(PIOP1(base), 0); /* clear scb_ovrnerrs */
550 ifp->if_mtu = WAVELAN_MTU;
551 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
553 ifp->if_flags |= IFF_DEBUG;
556 ifp->if_flags |= IFF_MULTICAST;
557 #endif /* MULTICAST */
558 if_initname(ifp, device_get_name(device), device_get_unit(device));
559 ifp->if_init = wlinit;
560 ifp->if_start = wlstart;
561 ifp->if_ioctl = wlioctl;
562 ifp->if_snd.ifq_maxlen = ifqmaxlen;
567 ether_ifattach(ifp, eaddr);
569 if_printf(ifp, "NWID 0x%02x%02x", sc->nwid[0], sc->nwid[1]);
571 printf(", Freq %d MHz",sc->freq24); /* 2.4 Gz */
572 printf("\n"); /* 2.4 Gz */
574 bus_setup_intr(device, sc->res_irq, INTR_TYPE_NET, NULL, wlintr, sc, &sc->intr_cookie);
582 wldetach(device_t device)
584 struct wl_softc *sc = device_get_softc(device);
585 device_t parent = device_get_parent(device);
593 /* reset the board */
594 sc->hacr = HACR_RESET;
596 sc->hacr = HACR_DEFAULT;
599 if (sc->intr_cookie != NULL) {
600 BUS_TEARDOWN_INTR(parent, device, sc->res_irq, sc->intr_cookie);
601 sc->intr_cookie = NULL;
604 bus_generic_detach(device);
605 wl_deallocate_resources(device);
608 mtx_destroy(&sc->wl_mtx);
613 wl_allocate_resources(device_t device)
615 struct wl_softc *sc = device_get_softc(device);
616 int ports = 16; /* Number of ports */
618 sc->res_ioport = bus_alloc_resource(device, SYS_RES_IOPORT,
619 &sc->rid_ioport, 0ul, ~0ul, ports, RF_ACTIVE);
620 if (sc->res_ioport == NULL)
623 sc->res_irq = bus_alloc_resource_any(device, SYS_RES_IRQ,
624 &sc->rid_irq, RF_SHAREABLE|RF_ACTIVE);
625 if (sc->res_irq == NULL)
630 wl_deallocate_resources(device);
635 wl_deallocate_resources(device_t device)
637 struct wl_softc *sc = device_get_softc(device);
639 if (sc->res_irq != 0) {
640 bus_release_resource(device, SYS_RES_IRQ,
641 sc->rid_irq, sc->res_irq);
644 if (sc->res_ioport != 0) {
645 bus_release_resource(device, SYS_RES_IOPORT,
646 sc->rid_ioport, sc->res_ioport);
653 * Print out interesting information about the 82596.
656 wldump(struct wl_softc *sc)
661 printf("hasr %04x\n", inw(HASR(base)));
663 printf("scb at %04x:\n ", OFFSET_SCB);
664 outw(PIOR1(base), OFFSET_SCB);
665 for (i = 0; i < 8; i++)
666 printf("%04x ", inw(PIOP1(base)));
669 printf("cu at %04x:\n ", OFFSET_CU);
670 outw(PIOR1(base), OFFSET_CU);
671 for (i = 0; i < 8; i++)
672 printf("%04x ", inw(PIOP1(base)));
675 printf("tbd at %04x:\n ", OFFSET_TBD);
676 outw(PIOR1(base), OFFSET_TBD);
677 for (i = 0; i < 4; i++)
678 printf("%04x ", inw(PIOP1(base)));
682 /* Initialize the Modem Management Controller */
684 wlinitmmc(struct wl_softc *sc)
691 /* enter 8 bit operation */
692 sc->hacr = (HACR_DEFAULT & ~HACR_16BITS);
695 configured = sc->psa[WLPSA_CONFIGURED] & 1;
698 * Set default modem control parameters. Taken from NCR document
701 MMC_WRITE(MMC_JABBER_ENABLE, 0x01);
702 MMC_WRITE(MMC_ANTEN_SEL, 0x02);
703 MMC_WRITE(MMC_IFS, 0x20);
704 MMC_WRITE(MMC_MOD_DELAY, 0x04);
705 MMC_WRITE(MMC_JAM_TIME, 0x38);
706 MMC_WRITE(MMC_DECAY_PRM, 0x00); /* obsolete ? */
707 MMC_WRITE(MMC_DECAY_UPDAT_PRM, 0x00);
709 MMC_WRITE(MMC_LOOPT_SEL, 0x00);
710 if (sc->psa[WLPSA_COMPATNO] & 1) {
711 MMC_WRITE(MMC_THR_PRE_SET, 0x01); /* 0x04 for AT and 0x01 for MCA */
713 MMC_WRITE(MMC_THR_PRE_SET, 0x04); /* 0x04 for AT and 0x01 for MCA */
715 MMC_WRITE(MMC_QUALITY_THR, 0x03);
717 /* use configuration defaults from parameter storage area */
718 if (sc->psa[WLPSA_NWIDENABLE] & 1) {
719 if ((mode & (MOD_PROM | MOD_ENAL)) && wl_ignore_nwid) {
720 MMC_WRITE(MMC_LOOPT_SEL, 0x40);
722 MMC_WRITE(MMC_LOOPT_SEL, 0x00);
725 MMC_WRITE(MMC_LOOPT_SEL, 0x40); /* disable network id check */
727 MMC_WRITE(MMC_THR_PRE_SET, sc->psa[WLPSA_THRESH]);
728 MMC_WRITE(MMC_QUALITY_THR, sc->psa[WLPSA_QUALTHRESH]);
730 MMC_WRITE(MMC_FREEZE, 0x00);
731 MMC_WRITE(MMC_ENCR_ENABLE, 0x00);
733 MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]); /* set NWID */
734 MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]);
736 /* enter normal 16 bit mode operation */
737 sc->hacr = HACR_DEFAULT;
739 CMD(sc); /* virtualpc1 needs this! */
741 if (sc->psa[WLPSA_COMPATNO]== /* 2.4 Gz: half-card ver */
742 WLPSA_COMPATNO_WL24B) { /* 2.4 Gz */
743 i=sc->chan24<<4; /* 2.4 Gz: position ch # */
744 MMC_WRITE(MMC_EEADDR,i+0x0f); /* 2.4 Gz: named ch, wc=16 */
745 MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Synths */
746 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */
747 for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */
748 DELAY(40); /* 2.4 Gz */
749 if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */
750 &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */
751 +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */
752 break; /* 2.4 Gz: download finished */
754 if (i==1000) printf("wl: synth load failed\n"); /* 2.4 Gz */
755 MMC_WRITE(MMC_EEADDR,0x61); /* 2.4 Gz: default pwr, wc=2 */
756 MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Xmit Pwr */
757 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */
758 for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */
759 DELAY(40); /* 2.4 Gz */
760 if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */
761 &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */
762 +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */
763 break; /* 2.4 Gz: download finished */
765 if (i==1000) printf("wl: xmit pwr load failed\n"); /* 2.4 Gz */
766 MMC_WRITE(MMC_ANALCTRL, /* 2.4 Gz: EXT ant+polarity */
767 MMC_ANALCTRL_ANTPOL + /* 2.4 Gz: */
768 MMC_ANALCTRL_EXTANT); /* 2.4 Gz: */
769 i=sc->chan24<<4; /* 2.4 Gz: position ch # */
770 MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */
771 MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */
772 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */
773 DELAY(40); /* 2.4 Gz */
774 i = wlmmcread(base,MMC_EEDATALrv) /* 2.4 Gz: freq val */
775 + (wlmmcread(base,MMC_EEDATAHrv)<<8); /* 2.4 Gz */
776 sc->freq24 = (i>>6)+2400; /* 2.4 Gz: save real freq */
783 * Another routine that interfaces the "if" layer to this driver.
784 * Simply resets the structures that are used by "upper layers".
785 * As well as calling wlhwrst that does reset the WaveLAN board.
787 * input : softc pointer for this interface
788 * output : structures (if structs) and board are reset
794 struct wl_softc *sc = xsc;
795 struct ifnet *ifp = sc->ifp;
800 if (sc->ifp->if_flags & IFF_DEBUG)
801 printf("wl%d: entered wlinit()\n",sc->unit);
805 if ((stat = wlhwrst(sc)) == TRUE) {
806 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING; /* same as DSF_RUNNING */
808 * OACTIVE is used by upper-level routines
811 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; /* same as tbusy below */
813 sc->flags |= DSF_RUNNING;
815 untimeout(wlwatchdog, sc, sc->watchdog_ch);
819 printf("wl%d init(): trouble resetting board.\n", sc->unit);
828 * This routine resets the WaveLAN board that corresponds to the
829 * board number passed in.
831 * input : board number to do a hardware reset
832 * output : board is reset
836 wlhwrst(struct wl_softc *sc)
840 if (sc->ifp->if_flags & IFF_DEBUG)
841 printf("wl%d: entered wlhwrst()\n", sc->unit);
843 sc->hacr = HACR_RESET;
844 CMD(sc); /* reset the board */
846 /* clear reset command and set PIO#1 in autoincrement mode */
847 sc->hacr = HACR_DEFAULT;
851 if (sc->ifp->if_flags & IFF_DEBUG)
852 wlmmcstat(sc); /* Display MMC registers */
854 wlbldcu(sc); /* set up command unit structures */
859 if (wlconfig(sc) == 0)
862 * insert code for loopback test here
864 wlrustrt(sc); /* start receive unit */
866 /* enable interrupts */
867 sc->hacr = (HACR_DEFAULT | HACR_INTRON);
876 * This function builds up the command unit structures. It inits
877 * the scp, iscp, scb, cb, tbd, and tbuf.
881 wlbldcu(struct wl_softc *sc)
883 short base = sc->base;
891 bzero(&scp, sizeof(scp));
893 scp.scp_iscp = OFFSET_ISCP;
894 scp.scp_iscp_base = 0;
895 outw(PIOR1(base), OFFSET_SCP);
896 outsw(PIOP1(base), &scp, sizeof(scp_t)/2);
898 bzero(&iscp, sizeof(iscp));
900 iscp.iscp_scb_offset = OFFSET_SCB;
902 iscp.iscp_scb_base = 0;
903 outw(PIOR1(base), OFFSET_ISCP);
904 outsw(PIOP1(base), &iscp, sizeof(iscp_t)/2);
907 scb.scb_command = SCB_RESET;
908 scb.scb_cbl_offset = OFFSET_CU;
909 scb.scb_rfa_offset = OFFSET_RU;
913 scb.scb_ovrnerrs = 0;
914 outw(PIOR1(base), OFFSET_SCB);
915 outsw(PIOP1(base), &scb, sizeof(scb_t)/2);
919 outw(PIOR0(base), OFFSET_ISCP + 0); /* address of iscp_busy */
920 for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); )
923 printf("wl%d bldcu(): iscp_busy timeout.\n", sc->unit);
924 outw(PIOR0(base), OFFSET_SCB + 0); /* address of scb_status */
925 for (i = STATUS_TRIES; i-- > 0; ) {
926 if (inw(PIOP0(base)) == (SCB_SW_CX|SCB_SW_CNA))
930 printf("wl%d bldcu(): not ready after reset.\n", sc->unit);
934 cb.ac_command = AC_CW_EL; /* NOP */
935 cb.ac_link_offset = OFFSET_CU;
936 outw(PIOR1(base), OFFSET_CU);
937 outsw(PIOP1(base), &cb, 6/2);
940 tbd.next_tbd_offset = I82586NULL;
943 outw(PIOR1(base), OFFSET_TBD);
944 outsw(PIOP1(base), &tbd, sizeof(tbd_t)/2);
952 * input : board number
953 * output : stuff sent to board if any there
957 wlstart(struct ifnet *ifp)
960 struct wl_softc *sc = ifp->if_softc;
961 short base = sc->base;
962 int scb_status, cu_status, scb_command;
966 if (sc->ifp->if_flags & IFF_DEBUG)
967 printf("%s: entered wlstart()\n", ifp->if_xname);
970 outw(PIOR1(base), OFFSET_CU);
971 cu_status = inw(PIOP1(base));
972 outw(PIOR0(base),OFFSET_SCB + 0); /* scb_status */
973 scb_status = inw(PIOP0(base));
974 outw(PIOR0(base), OFFSET_SCB + 2);
975 scb_command = inw(PIOP0(base));
978 * don't need OACTIVE check as tbusy here checks to see
979 * if we are already busy
982 if ((scb_status & 0x0700) == SCB_CUS_IDLE &&
983 (cu_status & AC_SW_B) == 0){
985 untimeout(wlwatchdog, sc, sc->watchdog_ch);
986 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
988 * This is probably just a race. The xmt'r is just
989 * became idle but WE have masked interrupts so ...
992 printf("%s: CU idle, scb %04x %04x cu %04x\n",
993 ifp->if_xname, scb_status, scb_command, cu_status);
995 if (xmt_watch) printf("!!");
998 return; /* genuinely still busy */
1000 } else if ((scb_status & 0x0700) == SCB_CUS_ACTV ||
1001 (cu_status & AC_SW_B)){
1003 printf("%s: CU unexpectedly busy; scb %04x cu %04x\n",
1004 ifp->if_xname, scb_status, cu_status);
1006 if (xmt_watch) printf("%s: busy?!",ifp->if_xname);
1008 return; /* hey, why are we busy? */
1011 /* get ourselves some data */
1013 IF_DEQUEUE(&ifp->if_snd, m);
1014 if (m != (struct mbuf *)0) {
1015 /* let BPF see it before we commit it */
1018 /* set the watchdog timer so that if the board
1019 * fails to interrupt we will restart
1021 /* try 10 ticks, not very long */
1022 sc->watchdog_ch = timeout(wlwatchdog, sc, 10);
1023 sc->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1024 sc->ifp->if_opackets++;
1027 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1036 * This routine does the actual copy of data (including ethernet header
1037 * structure) from the WaveLAN to an mbuf chain that will be passed up
1038 * to the "if" (network interface) layer. NOTE: we currently
1039 * don't handle trailer protocols, so if that is needed, it will
1040 * (at least in part) be added here. For simplicities sake, this
1041 * routine copies the receive buffers from the board into a local (stack)
1042 * buffer until the frame has been copied from the board. Once in
1043 * the local buffer, the contents are copied to an mbuf chain that
1044 * is then enqueued onto the appropriate "if" queue.
1046 * input : board number, and a frame descriptor address
1047 * output : the packet is put into an mbuf chain, and passed up
1048 * assumes : if any errors occur, packet is "dropped on the floor"
1052 wlread(struct wl_softc *sc, u_short fd_p)
1054 struct ifnet *ifp = sc->ifp;
1055 short base = sc->base;
1057 struct ether_header *eh;
1062 u_short bytes_in_msg, bytes_in_mbuf, bytes;
1067 if (sc->ifp->if_flags & IFF_DEBUG)
1068 printf("wl%d: entered wlread()\n", sc->unit);
1070 if (!((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))) {
1071 printf("%s read(): board is not running.\n", ifp->if_xname);
1072 sc->hacr &= ~HACR_INTRON;
1073 CMD(sc); /* turn off interrupts */
1077 * Collect message size.
1079 outw(PIOR1(base), fd_p);
1080 insw(PIOP1(base), &fd, sizeof(fd_t)/2);
1081 if (fd.rbd_offset == I82586NULL) {
1082 if (wlhwrst(sc) != TRUE) {
1083 sc->hacr &= ~HACR_INTRON;
1084 CMD(sc); /* turn off interrupts */
1085 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1090 outw(PIOR1(base), fd.rbd_offset);
1091 insw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1092 bytes_in_msg = rbd.status & RBD_SW_COUNT;
1095 * Allocate a cluster'd mbuf to receive the packet.
1097 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1099 if (wlhwrst(sc) != TRUE) {
1100 sc->hacr &= ~HACR_INTRON;
1101 CMD(sc); /* turn off interrupts */
1102 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1106 m->m_pkthdr.len = m->m_len = MCLBYTES;
1107 m_adj(m, ETHER_ALIGN); /* align IP header */
1110 * Collect the message data.
1113 mb_p = mtod(m, u_char *);
1114 bytes_in_mbuf = m->m_len;
1116 /* Put the ethernet header inside the mbuf. */
1117 bcopy(&fd.destination[0], mb_p, 14);
1120 bytes_in_mbuf -= 14;
1122 bytes = min(bytes_in_mbuf, bytes_in_msg);
1129 outw(PIOR1(base), rbd.buffer_addr);
1130 insw(PIOP1(base), mb_p, len/2);
1133 if (bytes > bytes_in_mbuf) {
1134 /* XXX something wrong, a packet should fit in 1 cluster */
1136 printf("wl%d read(): packet too large (%u > %u)\n",
1137 sc->unit, bytes, bytes_in_mbuf);
1138 if (wlhwrst(sc) != TRUE) {
1139 sc->hacr &= ~HACR_INTRON;
1140 CMD(sc); /* turn off interrupts */
1141 printf("wl%d read(): hwrst trouble.\n", sc->unit);
1146 bytes_in_mbuf -= bytes;
1147 bytes_in_msg -= bytes;
1148 if (bytes_in_msg == 0) {
1149 if (rbd.status & RBD_SW_EOF || rbd.next_rbd_offset == I82586NULL) {
1152 outw(PIOR1(base), rbd.next_rbd_offset);
1153 insw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1154 bytes_in_msg = rbd.status & RBD_SW_COUNT;
1156 rbd.buffer_addr += bytes;
1159 bytes = min(bytes_in_mbuf, bytes_in_msg);
1162 m->m_pkthdr.len = m->m_len = mlen;
1163 m->m_pkthdr.rcvif = ifp;
1166 * If hw is in promiscuous mode (note that I said hardware, not if
1167 * IFF_PROMISC is set in ifnet flags), then if this is a unicast
1168 * packet and the MAC dst is not us, drop it. This check in normally
1169 * inside ether_input(), but IFF_MULTI causes hw promisc without
1170 * a bpf listener, so this is wrong.
1171 * Greg Troxel <gdt@ir.bbn.com>, 1998-08-07
1174 * TBD: also discard packets where NWID does not match.
1175 * However, there does not appear to be a way to read the nwid
1176 * for a received packet. -gdt 1998-08-07
1178 /* XXX verify mbuf length */
1179 eh = mtod(m, struct ether_header *);
1181 #ifdef WL_USE_IFNET_PROMISC_CHECK /* not defined */
1182 (sc->ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI))
1184 /* hw is in promisc mode if this is true */
1185 (sc->mode & (MOD_PROM | MOD_ENAL))
1188 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
1189 bcmp(eh->ether_dhost, IF_LLADDR(sc->ifp),
1190 sizeof(eh->ether_dhost)) != 0 ) {
1196 if (sc->ifp->if_flags & IFF_DEBUG)
1197 printf("wl%d: wlrecv %u bytes\n", sc->unit, mlen);
1201 wl_cache_store(sc, base, eh, m);
1205 * received packet is now in a chain of mbuf's. next step is
1206 * to pass the packet upwards.
1209 (*ifp->if_input)(ifp, m);
1217 * This routine processes an ioctl request from the "if" layer
1220 * input : pointer the appropriate "if" struct, command, and data
1221 * output : based on command appropriate action is taken on the
1222 * WaveLAN board(s) or related structures
1223 * return : error is returned containing exit conditions
1227 wlioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1229 struct ifreq *ifr = (struct ifreq *)data;
1230 struct wl_softc *sc = ifp->if_softc;
1231 short base = sc->base;
1233 int opri, error = 0;
1234 struct thread *td = curthread; /* XXX */
1235 int irq, irqval, i, isroot;
1244 if (sc->ifp->if_flags & IFF_DEBUG)
1245 printf("%s: entered wlioctl()\n", ifp->if_xname);
1250 if (ifp->if_flags & IFF_ALLMULTI) {
1253 if (ifp->if_flags & IFF_PROMISC) {
1256 if (ifp->if_flags & IFF_LINK0) {
1260 * force a complete reset if the recieve multicast/
1261 * promiscuous mode changes so that these take
1262 * effect immediately.
1265 if (sc->mode != mode) {
1267 if (sc->flags & DSF_RUNNING) {
1268 sc->flags &= ~DSF_RUNNING;
1272 /* if interface is marked DOWN and still running then
1275 if ((ifp->if_flags & IFF_UP) == 0 && sc->flags & DSF_RUNNING) {
1276 printf("%s ioctl(): board is not running\n", ifp->if_xname);
1277 sc->flags &= ~DSF_RUNNING;
1278 sc->hacr &= ~HACR_INTRON;
1279 CMD(sc); /* turn off interrupts */
1281 /* else if interface is UP and RUNNING, start it
1283 else if (ifp->if_flags & IFF_UP && (sc->flags & DSF_RUNNING) == 0) {
1287 /* if WLDEBUG set on interface, then printf rf-modem regs
1289 if (ifp->if_flags & IFF_DEBUG)
1298 #endif /* MULTICAST */
1300 /* DEVICE SPECIFIC */
1303 /* copy the PSA out to the caller */
1305 /* pointer to buffer in user space */
1306 up = (void *)ifr->ifr_data;
1307 /* work out if they're root */
1308 isroot = (priv_check(td, PRIV_NET80211_GETKEY) == 0);
1310 for (i = 0; i < 0x40; i++) {
1311 /* don't hand the DES key out to non-root users */
1312 if ((i > WLPSA_DESKEY) && (i < (WLPSA_DESKEY + 8)) && !isroot)
1314 if (subyte((up + i), sc->psa[i])) {
1322 /* copy the PSA in from the caller; we only copy _some_ values */
1325 if ((error = priv_check(td, PRIV_DRIVER)))
1327 error = EINVAL; /* assume the worst */
1328 /* pointer to buffer in user space containing data */
1329 up = (void *)ifr->ifr_data;
1331 /* check validity of input range */
1332 for (i = 0; i < 0x40; i++)
1333 if (fubyte(up + i) < 0) {
1338 /* check IRQ value */
1339 irqval = fubyte(up+WLPSA_IRQNO);
1340 for (irq = 15; irq >= 0; irq--)
1341 if (irqvals[irq] == irqval)
1343 if (irq == 0) /* oops */
1346 sc->psa[WLPSA_IRQNO] = irqval;
1349 for (i = 0; i < 6; i++)
1350 sc->psa[WLPSA_LOCALMAC+i] = fubyte(up+WLPSA_LOCALMAC+i);
1353 sc->psa[WLPSA_MACSEL] = fubyte(up+WLPSA_MACSEL);
1356 sc->psa[WLPSA_NWID] = fubyte(up+WLPSA_NWID);
1357 sc->psa[WLPSA_NWID+1] = fubyte(up+WLPSA_NWID+1);
1360 wlsetpsa(sc); /* update the PSA */
1364 /* get the current NWID out of the sc since we stored it there */
1366 ifr->ifr_data = (caddr_t) (sc->nwid[0] << 8 | sc->nwid[1]);
1371 * change the nwid dynamically. This
1372 * ONLY changes the radio modem and does not
1376 * 1. save in softc "soft registers"
1377 * 2. save in radio modem (MMC)
1381 if ((error = priv_check(td, PRIV_DRIVER)))
1383 if (!(ifp->if_flags & IFF_UP)) {
1384 error = EIO; /* only allowed while up */
1387 * soft c nwid shadows radio modem setting
1389 sc->nwid[0] = (int)ifr->ifr_data >> 8;
1390 sc->nwid[1] = (int)ifr->ifr_data & 0xff;
1391 MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]);
1392 MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]);
1396 /* copy the EEPROM in 2.4 Gz WaveMODEM out to the caller */
1399 if ((error = priv_check(td, PRIV_DRIVER)))
1401 /* pointer to buffer in user space */
1402 up = (void *)ifr->ifr_data;
1404 for (i=0x00; i<0x80; ++i) { /* 2.4 Gz: size of EEPROM */
1405 MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */
1406 MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */
1407 MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */
1408 DELAY(40); /* 2.4 Gz */
1409 if (subyte(up + 2*i, /* 2.4 Gz: pass low byte of */
1410 wlmmcread(base,MMC_EEDATALrv))) {/* 2.4 Gz: EEPROM word */
1412 return(EFAULT); /* 2.4 Gz: */
1414 if (subyte(up + 2*i+1, /* 2.4 Gz: pass hi byte of */
1415 wlmmcread(base,MMC_EEDATALrv))) {/* 2.4 Gz: EEPROM word */
1417 return(EFAULT); /* 2.4 Gz: */
1423 /* zero (Delete) the wl cache */
1426 if ((error = priv_check(td, PRIV_DRIVER)))
1431 /* read out the number of used cache elements */
1433 ifr->ifr_data = (caddr_t) sc->w_sigitems;
1436 /* read out the wl cache */
1438 /* pointer to buffer in user space */
1439 up = (void *)ifr->ifr_data;
1440 cpt = (char *) &sc->w_sigcache[0];
1441 size = sc->w_sigitems * sizeof(struct w_sigcache);
1443 for (i = 0; i < size; i++) {
1444 if (subyte((up + i), *cpt++)) {
1453 error = ether_ioctl(ifp, cmd, data);
1464 * Called if the timer set in wlstart expires before an interrupt is received
1465 * from the wavelan. It seems to lose interrupts sometimes.
1466 * The watchdog routine gets called if the transmitter failed to interrupt
1468 * input : which board is timing out
1469 * output : board reset
1473 wlwatchdog(void *vsc)
1475 struct wl_softc *sc = vsc;
1476 int unit = sc->unit;
1478 log(LOG_ERR, "wl%d: wavelan device timeout on xmit\n", unit);
1480 sc->ifp->if_oerrors++;
1488 * This function is the interrupt handler for the WaveLAN
1489 * board. This routine will be called whenever either a packet
1490 * is received, or a packet has successfully been transfered and
1491 * the unit is ready to transmit another packet.
1493 * input : board number that interrupted
1494 * output : either a packet is received, or a packet is transfered
1500 struct wl_softc *sc = (struct wl_softc *)arg;
1501 short base = sc->base;
1503 u_short int_type, int_type1;
1507 if (sc->ifp->if_flags & IFF_DEBUG)
1508 printf("wl%d: wlintr() called\n", sc->unit);
1511 if ((int_type = inw(HASR(base))) & HASR_MMC_INTR) {
1512 /* handle interrupt from the modem management controler */
1513 /* This will clear the interrupt condition */
1514 (void) wlmmcread(base,MMC_DCE_STATUS); /* ignored for now */
1517 if (!(int_type & HASR_INTR)){ /* return if no interrupt from 82586 */
1518 /* commented out. jrb. it happens when reinit occurs
1519 printf("wlintr: int_type %x, dump follows\n", int_type);
1529 outw(PIOR0(base), OFFSET_SCB + 0); /* get scb status */
1530 int_type = (inw(PIOP0(base)) & SCB_SW_INT);
1531 if (int_type == 0) /* no interrupts left */
1534 int_type1 = wlack(sc); /* acknowledge interrupt(s) */
1535 /* make sure no bits disappeared (others may appear) */
1536 if ((int_type & int_type1) != int_type)
1537 printf("wlack() int bits disappeared : %04x != int_type %04x\n",
1538 int_type1, int_type);
1539 int_type = int_type1; /* go with the new status */
1543 if (int_type & SCB_SW_FR) {
1544 sc->ifp->if_ipackets++;
1548 * receiver not ready
1550 if (int_type & SCB_SW_RNR) {
1551 sc->ifp->if_ierrors++;
1553 if (sc->ifp->if_flags & IFF_DEBUG)
1554 printf("wl%d intr(): receiver overrun! begin_fd = %x\n",
1555 sc->unit, sc->begin_fd);
1562 if (int_type & SCB_SW_CNA) {
1564 * At present, we don't care about CNA's. We
1565 * believe they are a side effect of XMT.
1568 if (int_type & SCB_SW_CX) {
1570 * At present, we only request Interrupt for
1573 outw(PIOR1(base), OFFSET_CU); /* get command status */
1574 ac_status = inw(PIOP1(base));
1576 if (xmt_watch) { /* report some anomalies */
1578 if (sc->tbusy == 0) {
1579 printf("wl%d: xmt intr but not busy, CU %04x\n",
1580 sc->unit, ac_status);
1582 if (ac_status == 0) {
1583 printf("wl%d: xmt intr but ac_status == 0\n", sc->unit);
1585 if (ac_status & AC_SW_A) {
1586 printf("wl%d: xmt aborted\n", sc->unit);
1589 if (ac_status & TC_CARRIER) {
1590 printf("wl%d: no carrier\n", sc->unit);
1593 if (ac_status & TC_CLS) {
1594 printf("wl%d: no CTS\n", sc->unit);
1596 if (ac_status & TC_DMA) {
1597 printf("wl%d: DMA underrun\n", sc->unit);
1599 if (ac_status & TC_DEFER) {
1600 printf("wl%d: xmt deferred\n", sc->unit);
1602 if (ac_status & TC_SQE) {
1603 printf("wl%d: heart beat\n", sc->unit);
1605 if (ac_status & TC_COLLISION) {
1606 printf("wl%d: too many collisions\n", sc->unit);
1609 /* if the transmit actually failed, or returned some status */
1610 if ((!(ac_status & AC_SW_OK)) || (ac_status & 0xfff)) {
1611 if (ac_status & (TC_COLLISION | TC_CLS | TC_DMA)) {
1612 sc->ifp->if_oerrors++;
1614 /* count collisions */
1615 sc->ifp->if_collisions += (ac_status & 0xf);
1616 /* if TC_COLLISION set and collision count zero, 16 collisions */
1617 if ((ac_status & 0x20) == 0x20) {
1618 sc->ifp->if_collisions += 0x10;
1622 untimeout(wlwatchdog, sc, sc->watchdog_ch);
1623 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1634 * This routine is called by the interrupt handler to initiate a
1635 * packet transfer from the board to the "if" layer above this
1636 * driver. This routine checks if a buffer has been successfully
1637 * received by the WaveLAN. If so, the routine wlread is called
1638 * to do the actual transfer of the board data (including the
1639 * ethernet header) into a packet (consisting of an mbuf chain).
1641 * input : number of the board to check
1642 * output : if a packet is available, it is "sent up"
1646 wlrcv(struct wl_softc *sc)
1648 short base = sc->base;
1649 u_short fd_p, status, offset, link_offset;
1652 if (sc->ifp->if_flags & IFF_DEBUG)
1653 printf("wl%d: entered wlrcv()\n", sc->unit);
1655 for (fd_p = sc->begin_fd; fd_p != I82586NULL; fd_p = sc->begin_fd) {
1657 outw(PIOR0(base), fd_p + 0); /* address of status */
1658 status = inw(PIOP0(base));
1659 outw(PIOR1(base), fd_p + 4); /* address of link_offset */
1660 link_offset = inw(PIOP1(base));
1661 offset = inw(PIOP1(base)); /* rbd_offset */
1662 if (status == 0xffff || offset == 0xffff /*I82586NULL*/) {
1663 if (wlhwrst(sc) != TRUE)
1664 printf("wl%d rcv(): hwrst ffff trouble.\n", sc->unit);
1666 } else if (status & AC_SW_C) {
1667 if (status == (RFD_DONE|RFD_RSC)) {
1670 if (sc->ifp->if_flags & IFF_DEBUG)
1671 printf("wl%d RCV: RSC %x\n", sc->unit, status);
1673 sc->ifp->if_ierrors++;
1674 } else if (!(status & RFD_OK)) {
1675 printf("wl%d RCV: !OK %x\n", sc->unit, status);
1676 sc->ifp->if_ierrors++;
1677 } else if (status & 0xfff) { /* can't happen */
1678 printf("wl%d RCV: ERRs %x\n", sc->unit, status);
1679 sc->ifp->if_ierrors++;
1680 } else if (!wlread(sc, fd_p))
1683 if (!wlrequeue(sc, fd_p)) {
1684 /* abort on chain error */
1685 if (wlhwrst(sc) != TRUE)
1686 printf("wl%d rcv(): hwrst trouble.\n", sc->unit);
1689 sc->begin_fd = link_offset;
1700 * This routine puts rbd's used in the last receive back onto the
1701 * free list for the next receive.
1705 wlrequeue(struct wl_softc *sc, u_short fd_p)
1707 short base = sc->base;
1709 u_short l_rbdp, f_rbdp, rbd_offset;
1711 outw(PIOR0(base), fd_p + 6);
1712 rbd_offset = inw(PIOP0(base));
1713 if ((f_rbdp = rbd_offset) != I82586NULL) {
1716 outw(PIOR0(base), l_rbdp + 0); /* address of status */
1717 if (inw(PIOP0(base)) & RBD_SW_EOF)
1719 outw(PIOP0(base), 0);
1720 outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */
1721 if ((l_rbdp = inw(PIOP0(base))) == I82586NULL)
1724 outw(PIOP0(base), 0);
1725 outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */
1726 outw(PIOP0(base), I82586NULL);
1727 outw(PIOR0(base), l_rbdp + 8); /* address of size */
1728 outw(PIOP0(base), inw(PIOP0(base)) | AC_CW_EL);
1729 outw(PIOR0(base), sc->end_rbd + 2);
1730 outw(PIOP0(base), f_rbdp); /* end_rbd->next_rbd_offset */
1731 outw(PIOR0(base), sc->end_rbd + 8); /* size */
1732 outw(PIOP0(base), inw(PIOP0(base)) & ~AC_CW_EL);
1733 sc->end_rbd = l_rbdp;
1737 fd.command = AC_CW_EL;
1738 fd.link_offset = I82586NULL;
1739 fd.rbd_offset = I82586NULL;
1740 outw(PIOR1(base), fd_p);
1741 outsw(PIOP1(base), &fd, 8/2);
1743 outw(PIOR1(base), sc->end_fd + 2); /* addr of command */
1744 outw(PIOP1(base), 0); /* command = 0 */
1745 outw(PIOP1(base), fd_p); /* end_fd->link_offset = fd_p */
1752 static int xmt_debug = 0;
1753 #endif /* WLDEBUG */
1758 * This routine fills in the appropriate registers and memory
1759 * locations on the WaveLAN board and starts the board off on
1762 * input : pointers to board of interest's softc and the mbuf
1763 * output : board memory and registers are set for xfer and attention
1767 wlxmt(struct wl_softc *sc, struct mbuf *m)
1769 u_short xmtdata_p = OFFSET_TBUF;
1771 struct mbuf *tm_p = m;
1772 struct ether_header *eh_p = mtod(m, struct ether_header *);
1773 u_char *mb_p = mtod(m, u_char *) + sizeof(struct ether_header);
1774 u_short count = m->m_len - sizeof(struct ether_header);
1776 u_short tbd_p = OFFSET_TBD;
1777 u_short len, clen = 0;
1778 short base = sc->base;
1782 if (sc->ifp->if_flags & IFF_DEBUG)
1783 printf("%s: entered wlxmt()\n", sc->ifp->if_xname);
1787 cb.ac_command = (AC_CW_EL|AC_TRANSMIT|AC_CW_I);
1788 cb.ac_link_offset = I82586NULL;
1789 outw(PIOR1(base), OFFSET_CU);
1790 outsw(PIOP1(base), &cb, 6/2);
1791 outw(PIOP1(base), OFFSET_TBD); /* cb.cmd.transmit.tbd_offset */
1792 outsw(PIOP1(base), eh_p->ether_dhost, WAVELAN_ADDR_SIZE/2);
1793 outw(PIOP1(base), eh_p->ether_type);
1796 if (sc->ifp->if_flags & IFF_DEBUG) {
1798 printf("XMT mbuf: L%d @%p ", count, (void *)mb_p);
1799 printf("ether type %x\n", eh_p->ether_type);
1802 #endif /* WLDEBUG */
1803 outw(PIOR0(base), OFFSET_TBD);
1804 outw(PIOP0(base), 0); /* act_count */
1805 outw(PIOR1(base), OFFSET_TBD + 4);
1806 outw(PIOP1(base), xmtdata_p); /* buffer_addr */
1807 outw(PIOP1(base), 0); /* buffer_base */
1810 if (clen + count > WAVELAN_MTU)
1816 outw(PIOR1(base), xmtdata_p);
1817 outsw(PIOP1(base), mb_p, len/2);
1819 outw(PIOR0(base), tbd_p); /* address of act_count */
1820 outw(PIOP0(base), inw(PIOP0(base)) + count);
1822 if ((tm_p = tm_p->m_next) == (struct mbuf *)0)
1825 /* go to the next descriptor */
1826 outw(PIOR0(base), tbd_p + 2);
1827 tbd_p += sizeof (tbd_t);
1828 outw(PIOP0(base), tbd_p); /* next_tbd_offset */
1829 outw(PIOR0(base), tbd_p);
1830 outw(PIOP0(base), 0); /* act_count */
1831 outw(PIOR1(base), tbd_p + 4);
1832 outw(PIOP1(base), xmtdata_p); /* buffer_addr */
1833 outw(PIOP1(base), 0); /* buffer_base */
1834 /* at the end -> coallesce remaining mbufs */
1835 if (tbd_p == OFFSET_TBD + (N_TBD-1) * sizeof (tbd_t)) {
1836 wlsftwsleaze(&count, &mb_p, &tm_p, sc);
1839 /* next mbuf short -> coallesce as needed */
1840 if ( (tm_p->m_next == (struct mbuf *) 0) ||
1841 #define HDW_THRESHOLD 55
1842 tm_p->m_len > HDW_THRESHOLD)
1845 wlhdwsleaze(&count, &mb_p, &tm_p, sc);
1849 } else if ((tm_p = tm_p->m_next) == (struct mbuf *)0)
1851 count = tm_p->m_len;
1852 mb_p = mtod(tm_p, u_char *);
1854 if (sc->ifp->if_flags & IFF_DEBUG)
1856 printf("mbuf+ L%d @%p ", count, (void *)mb_p);
1857 #endif /* WLDEBUG */
1860 if (sc->ifp->if_flags & IFF_DEBUG)
1862 printf("CLEN = %d\n", clen);
1863 #endif /* WLDEBUG */
1864 outw(PIOR0(base), tbd_p);
1865 if (clen < ETHERMIN) {
1866 outw(PIOP0(base), inw(PIOP0(base)) + ETHERMIN - clen);
1867 outw(PIOR1(base), xmtdata_p);
1868 for (xmtshort_p = xmtdata_p; clen < ETHERMIN; clen += 2)
1869 outw(PIOP1(base), 0);
1871 outw(PIOP0(base), inw(PIOP0(base)) | TBD_SW_EOF);
1872 outw(PIOR0(base), tbd_p + 2);
1873 outw(PIOP0(base), I82586NULL);
1875 if (sc->ifp->if_flags & IFF_DEBUG) {
1881 #endif /* WLDEBUG */
1883 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
1885 * wait for 586 to clear previous command, complain if it takes
1888 for (spin = 1;;spin = (spin + 1) % 10000) {
1889 if (inw(PIOP0(base)) == 0) { /* it's done, we can go */
1892 if ((spin == 0) && xmt_watch) { /* not waking up, and we care */
1893 printf("%s: slow accepting xmit\n", sc->ifp->if_xname);
1896 outw(PIOP0(base), SCB_CU_STRT); /* new command */
1902 * Pause to avoid transmit overrun problems.
1903 * The required delay tends to vary with platform type, and may be
1904 * related to interrupt loss.
1906 if (wl_xmit_delay) {
1907 DELAY(wl_xmit_delay);
1915 * This function builds the linear linked lists of fd's and
1916 * rbd's. Based on page 4-32 of 1986 Intel microcom handbook.
1920 wlbldru(struct wl_softc *sc)
1922 short base = sc->base;
1925 u_short fd_p = OFFSET_RU;
1926 u_short rbd_p = OFFSET_RBD;
1929 sc->begin_fd = fd_p;
1930 for (i = 0; i < N_FD; i++) {
1933 fd.link_offset = fd_p + sizeof(fd_t);
1934 fd.rbd_offset = I82586NULL;
1935 outw(PIOR1(base), fd_p);
1936 outsw(PIOP1(base), &fd, 8/2);
1937 fd_p = fd.link_offset;
1939 fd_p -= sizeof(fd_t);
1941 outw(PIOR1(base), fd_p + 2);
1942 outw(PIOP1(base), AC_CW_EL); /* command */
1943 outw(PIOP1(base), I82586NULL); /* link_offset */
1946 outw(PIOR0(base), fd_p + 6); /* address of rbd_offset */
1947 outw(PIOP0(base), rbd_p);
1948 outw(PIOR1(base), rbd_p);
1949 for (i = 0; i < N_RBD; i++) {
1951 rbd.buffer_addr = rbd_p + sizeof(rbd_t) + 2;
1952 rbd.buffer_base = 0;
1953 rbd.size = RCVBUFSIZE;
1955 rbd_p += sizeof(ru_t);
1956 rbd.next_rbd_offset = rbd_p;
1958 rbd.next_rbd_offset = I82586NULL;
1959 rbd.size |= AC_CW_EL;
1960 sc->end_rbd = rbd_p;
1962 outsw(PIOP1(base), &rbd, sizeof(rbd_t)/2);
1963 outw(PIOR1(base), rbd_p);
1965 return sc->begin_fd;
1971 * This routine starts the receive unit running. First checks if the
1972 * board is actually ready, then the board is instructed to receive
1977 wlrustrt(struct wl_softc *sc)
1979 short base = sc->base;
1983 if (sc->ifp->if_flags & IFF_DEBUG)
1984 printf("wl%d: entered wlrustrt()\n", sc->unit);
1986 outw(PIOR0(base), OFFSET_SCB);
1987 if (inw(PIOP0(base)) & SCB_RUS_READY){
1988 printf("wlrustrt: RUS_READY\n");
1992 outw(PIOR0(base), OFFSET_SCB + 2);
1993 outw(PIOP0(base), SCB_RU_STRT); /* command */
1995 outw(PIOR0(base), OFFSET_SCB + 6); /* address of scb_rfa_offset */
1996 outw(PIOP0(base), rfa);
2005 * This routine does a 586 op-code number 7, and obtains the
2006 * diagnose status for the WaveLAN.
2010 wldiag(struct wl_softc *sc)
2012 short base = sc->base;
2016 if (sc->ifp->if_flags & IFF_DEBUG)
2017 printf("wl%d: entered wldiag()\n", sc->unit);
2019 outw(PIOR0(base), OFFSET_SCB);
2020 status = inw(PIOP0(base));
2021 if (status & SCB_SW_INT) {
2022 /* state is 2000 which seems ok
2023 printf("wl%d diag(): unexpected initial state %\n",
2024 sc->unit, inw(PIOP0(base)));
2028 outw(PIOR1(base), OFFSET_CU);
2029 outw(PIOP1(base), 0); /* ac_status */
2030 outw(PIOP1(base), AC_DIAGNOSE|AC_CW_EL);/* ac_command */
2031 if (wlcmd(sc, "diag()") == 0)
2033 outw(PIOR0(base), OFFSET_CU);
2034 if (inw(PIOP0(base)) & 0x0800) {
2035 printf("wl%d: i82586 Self Test failed!\n", sc->unit);
2044 * This routine does a standard config of the WaveLAN board.
2048 wlconfig(struct wl_softc *sc)
2050 configure_t configure;
2051 short base = sc->base;
2054 struct ifmultiaddr *ifma;
2057 #endif /* MULTICAST */
2060 if (sc->ifp->if_flags & IFF_DEBUG)
2061 printf("wl%d: entered wlconfig()\n", sc->unit);
2063 outw(PIOR0(base), OFFSET_SCB);
2064 if (inw(PIOP0(base)) & SCB_SW_INT) {
2066 printf("wl%d config(): unexpected initial state %x\n",
2067 sc->unit, inw(PIOP0(base)));
2072 outw(PIOR1(base), OFFSET_CU);
2073 outw(PIOP1(base), 0); /* ac_status */
2074 outw(PIOP1(base), AC_CONFIGURE|AC_CW_EL); /* ac_command */
2077 configure.fifolim_bytecnt = 0x080c;
2078 configure.addrlen_mode = 0x0600;
2079 configure.linprio_interframe = 0x2060;
2080 configure.slot_time = 0xf200;
2081 configure.hardware = 0x0008; /* tx even w/o CD */
2082 configure.min_frame_len = 0x0040;
2084 /* This is the configuration block suggested by Marc Meertens
2085 * <mmeerten@obelix.utrecht.NCR.COM> in an e-mail message to John
2086 * Ioannidis on 10 Nov 92.
2088 configure.fifolim_bytecnt = 0x040c;
2089 configure.addrlen_mode = 0x0600;
2090 configure.linprio_interframe = 0x2060;
2091 configure.slot_time = 0xf000;
2092 configure.hardware = 0x0008; /* tx even w/o CD */
2093 configure.min_frame_len = 0x0040;
2096 * below is the default board configuration from p2-28 from 586 book
2098 configure.fifolim_bytecnt = 0x080c;
2099 configure.addrlen_mode = 0x2600;
2100 configure.linprio_interframe = 0x7820; /* IFS=120, ACS=2 */
2101 configure.slot_time = 0xf00c; /* slottime=12 */
2102 configure.hardware = 0x0008; /* tx even w/o CD */
2103 configure.min_frame_len = 0x0040;
2105 if (sc->mode & (MOD_PROM | MOD_ENAL))
2106 configure.hardware |= 1;
2107 outw(PIOR1(base), OFFSET_CU + 6);
2108 outsw(PIOP1(base), &configure, sizeof(configure_t)/2);
2110 if (wlcmd(sc, "config()-configure") == 0)
2113 outw(PIOR1(base), OFFSET_CU);
2114 outw(PIOP1(base), 0); /* ac_status */
2115 outw(PIOP1(base), AC_MCSETUP|AC_CW_EL); /* ac_command */
2116 outw(PIOR1(base), OFFSET_CU + 8);
2117 if_maddr_rlock(sc->ifp);
2118 TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) {
2119 if (ifma->ifma_addr->sa_family != AF_LINK)
2122 addrp = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
2123 outw(PIOP1(base), addrp[0] + (addrp[1] << 8));
2124 outw(PIOP1(base), addrp[2] + (addrp[3] << 8));
2125 outw(PIOP1(base), addrp[4] + (addrp[5] << 8));
2128 if_maddr_runlock(sc->ifp);
2129 outw(PIOR1(base), OFFSET_CU + 6); /* mc-cnt */
2130 outw(PIOP1(base), cnt * WAVELAN_ADDR_SIZE);
2131 if (wlcmd(sc, "config()-mcaddress") == 0)
2133 #endif /* MULTICAST */
2135 outw(PIOR1(base), OFFSET_CU);
2136 outw(PIOP1(base), 0); /* ac_status */
2137 outw(PIOP1(base), AC_IASETUP|AC_CW_EL); /* ac_command */
2138 outw(PIOR1(base), OFFSET_CU + 6);
2139 outsw(PIOP1(base), IF_LLADDR(sc->ifp), WAVELAN_ADDR_SIZE/2);
2141 if (wlcmd(sc, "config()-address") == 0)
2152 * Set channel attention bit and busy wait until command has
2153 * completed. Then acknowledge the command completion.
2156 wlcmd(struct wl_softc *sc, char *str)
2158 short base = sc->base;
2161 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
2162 outw(PIOP0(base), SCB_CU_STRT);
2166 outw(PIOR0(base), OFFSET_CU);
2167 for (i = 0; i < 0xffff; i++)
2168 if (inw(PIOP0(base)) & AC_SW_C)
2170 if (i == 0xffff || !(inw(PIOP0(base)) & AC_SW_OK)) {
2171 printf("wl%d: %s failed; status = %d, inw = %x, outw = %x\n",
2172 sc->unit, str, inw(PIOP0(base)) & AC_SW_OK, inw(PIOP0(base)), inw(PIOR0(base)));
2173 outw(PIOR0(base), OFFSET_SCB);
2174 printf("scb_status %x\n", inw(PIOP0(base)));
2175 outw(PIOR0(base), OFFSET_SCB+2);
2176 printf("scb_command %x\n", inw(PIOP0(base)));
2177 outw(PIOR0(base), OFFSET_SCB+4);
2178 printf("scb_cbl %x\n", inw(PIOP0(base)));
2179 outw(PIOR0(base), OFFSET_CU+2);
2180 printf("cu_cmd %x\n", inw(PIOP0(base)));
2184 outw(PIOR0(base), OFFSET_SCB);
2185 if ((inw(PIOP0(base)) & SCB_SW_INT) && (inw(PIOP0(base)) != SCB_SW_CNA)) {
2187 printf("wl%d %s: unexpected final state %x\n",
2188 sc->unit, str, inw(PIOP0(base)));
2196 * wlack: if the 82596 wants attention because it has finished
2197 * sending or receiving a packet, acknowledge its desire and
2198 * return bits indicating the kind of attention. wlack() returns
2199 * these bits so that the caller can service exactly the
2200 * conditions that wlack() acknowledged.
2203 wlack(struct wl_softc *sc)
2207 short base = sc->base;
2209 outw(PIOR1(base), OFFSET_SCB);
2210 if (!(cmd = (inw(PIOP1(base)) & SCB_SW_INT)))
2213 if (sc->ifp->if_flags & IFF_DEBUG)
2214 printf("wl%d: doing a wlack()\n", sc->unit);
2216 outw(PIOP1(base), cmd);
2218 outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */
2219 for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); )
2222 printf("wl%d wlack(): board not accepting command.\n", sc->unit);
2228 wltbd(struct wl_softc *sc)
2230 short base = sc->base;
2231 u_short tbd_p = OFFSET_TBD;
2237 outw(PIOR1(base), tbd_p);
2238 insw(PIOP1(base), &tbd, sizeof(tbd_t)/2);
2239 sum += (tbd.act_count & ~TBD_SW_EOF);
2240 printf("%d: addr %x, count %d (%d), next %x, base %x\n",
2241 i++, tbd.buffer_addr,
2242 (tbd.act_count & ~TBD_SW_EOF), sum,
2243 tbd.next_tbd_offset, tbd.buffer_base);
2244 if (tbd.act_count & TBD_SW_EOF)
2246 tbd_p = tbd.next_tbd_offset;
2252 wlhdwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc)
2254 struct mbuf *tm_p = *tm_pp;
2255 u_char *mb_p = *mb_pp;
2261 * can we get a run that will be coallesced or
2262 * that terminates before breaking
2265 count += tm_p->m_len;
2266 if (tm_p->m_len & 1)
2268 } while ((tm_p = tm_p->m_next) != (struct mbuf *)0);
2269 if ( (tm_p == (struct mbuf *)0) ||
2270 count > HDW_THRESHOLD) {
2271 *countp = (*tm_pp)->m_len;
2272 *mb_pp = mtod((*tm_pp), u_char *);
2276 /* we need to copy */
2280 cp = (u_char *) t_packet;
2282 bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len);
2284 if (count > HDW_THRESHOLD)
2287 if (tm_p->m_next == (struct mbuf *)0)
2289 tm_p = tm_p->m_next;
2292 *mb_pp = (u_char *) t_packet;
2299 wlsftwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp, struct wl_softc *sc)
2301 struct mbuf *tm_p = *tm_pp;
2303 u_char *cp = (u_char *) t_packet;
2306 /* we need to copy */
2308 bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len);
2311 if (tm_p->m_next == (struct mbuf *)0)
2313 tm_p = tm_p->m_next;
2317 *mb_pp = (u_char *) t_packet;
2323 wlmmcstat(struct wl_softc *sc)
2325 short base = sc->base;
2328 printf("wl%d: DCE_STATUS: 0x%x, ", sc->unit,
2329 wlmmcread(base,MMC_DCE_STATUS) & 0x0f);
2330 tmp = wlmmcread(base,MMC_CORRECT_NWID_H) << 8;
2331 tmp |= wlmmcread(base,MMC_CORRECT_NWID_L);
2332 printf("Correct NWID's: %d, ", tmp);
2333 tmp = wlmmcread(base,MMC_WRONG_NWID_H) << 8;
2334 tmp |= wlmmcread(base,MMC_WRONG_NWID_L);
2335 printf("Wrong NWID's: %d\n", tmp);
2336 printf("THR_PRE_SET: 0x%x, ", wlmmcread(base,MMC_THR_PRE_SET));
2337 printf("SIGNAL_LVL: %d, SILENCE_LVL: %d\n",
2338 wlmmcread(base,MMC_SIGNAL_LVL),
2339 wlmmcread(base,MMC_SILENCE_LVL));
2340 printf("SIGN_QUAL: 0x%x, NETW_ID: %x:%x, DES: %d\n",
2341 wlmmcread(base,MMC_SIGN_QUAL),
2342 wlmmcread(base,MMC_NETW_ID_H),
2343 wlmmcread(base,MMC_NETW_ID_L),
2344 wlmmcread(base,MMC_DES_AVAIL));
2348 wlmmcread(u_int base, u_short reg)
2350 while (inw(HASR(base)) & HASR_MMC_BUSY)
2352 outw(MMCR(base),reg << 1);
2353 while (inw(HASR(base)) & HASR_MMC_BUSY)
2355 return (u_short)inw(MMCR(base)) >> 8;
2359 getsnr(struct wl_softc *sc)
2361 MMC_WRITE(MMC_FREEZE,1);
2363 * SNR retrieval procedure :
2365 * read signal level : wlmmcread(base, MMC_SIGNAL_LVL);
2366 * read silence level : wlmmcread(base, MMC_SILENCE_LVL);
2368 MMC_WRITE(MMC_FREEZE,0);
2370 * SNR is signal:silence ratio.
2377 ** Reads the psa for the wavelan at (base) into (buf)
2380 wlgetpsa(int base, u_char *buf)
2384 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2385 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2387 for (i = 0; i < 0x40; i++) {
2388 outw(PIOR2(base), i);
2389 buf[i] = inb(PIOP2(base));
2391 PCMD(base, HACR_DEFAULT);
2392 PCMD(base, HACR_DEFAULT);
2398 ** Writes the psa for wavelan (unit) from the softc back to the
2399 ** board. Updates the CRC and sets the CRC OK flag.
2401 ** Do not call this when the board is operating, as it doesn't
2402 ** preserve the hacr.
2405 wlsetpsa(struct wl_softc *sc)
2407 short base = sc->base;
2411 crc = wlpsacrc(sc->psa); /* calculate CRC of PSA */
2412 sc->psa[WLPSA_CRCLOW] = crc & 0xff;
2413 sc->psa[WLPSA_CRCHIGH] = (crc >> 8) & 0xff;
2414 sc->psa[WLPSA_CRCOK] = 0x55; /* default to 'bad' until programming complete */
2416 oldpri = splimp(); /* ick, long pause */
2418 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2419 PCMD(base, HACR_DEFAULT & ~HACR_16BITS);
2421 for (i = 0; i < 0x40; i++) {
2423 outw(PIOR2(base),i); /* write param memory */
2425 outb(PIOP2(base), sc->psa[i]);
2428 outw(PIOR2(base),WLPSA_CRCOK); /* update CRC flag*/
2430 sc->psa[WLPSA_CRCOK] = 0xaa; /* OK now */
2431 outb(PIOP2(base), 0xaa); /* all OK */
2434 PCMD(base, HACR_DEFAULT);
2435 PCMD(base, HACR_DEFAULT);
2441 ** CRC routine provided by Christopher Giordano <cgiordan@gdeb.com>,
2442 ** from original code by Tomi Mikkonen (tomitm@remedy.fi)
2445 static u_int crc16_table[16] = {
2446 0x0000, 0xCC01, 0xD801, 0x1400,
2447 0xF001, 0x3C00, 0x2800, 0xE401,
2448 0xA001, 0x6C00, 0x7800, 0xB401,
2449 0x5000, 0x9C01, 0x8801, 0x4400
2453 wlpsacrc(u_char *buf)
2458 for (i = 0; i < 0x3d; i++, buf++) {
2460 r1 = crc16_table[crc & 0xF];
2461 crc = (crc >> 4) & 0x0FFF;
2462 crc = crc ^ r1 ^ crc16_table[*buf & 0xF];
2465 r1 = crc16_table[crc & 0xF];
2466 crc = (crc >> 4) & 0x0FFF;
2467 crc = crc ^ r1 ^ crc16_table[(*buf >> 4) & 0xF];
2476 * take input packet and cache various radio hw characteristics
2477 * indexed by MAC address.
2479 * Some things to think about:
2480 * note that no space is malloced.
2481 * We might hash the mac address if the cache were bigger.
2482 * It is not clear that the cache is big enough.
2483 * It is also not clear how big it should be.
2484 * The cache is IP-specific. We don't care about that as
2485 * we want it to be IP-specific.
2486 * The last N recv. packets are saved. This will tend
2487 * to reward agents and mobile hosts that beacon.
2488 * That is probably fine for mobile ip.
2491 /* globals for wavelan signal strength cache */
2492 /* this should go into softc structure above.
2495 /* set true if you want to limit cache items to broadcast/mcast
2496 * only packets (not unicast)
2498 static int wl_cache_mcastonly = 1;
2499 SYSCTL_INT(_machdep, OID_AUTO, wl_cache_mcastonly, CTLFLAG_RW,
2500 &wl_cache_mcastonly, 0, "");
2502 /* set true if you want to limit cache items to IP packets only
2504 static int wl_cache_iponly = 1;
2505 SYSCTL_INT(_machdep, OID_AUTO, wl_cache_iponly, CTLFLAG_RW,
2506 &wl_cache_iponly, 0, "");
2508 /* zero out the cache
2511 wl_cache_zero(struct wl_softc *sc)
2514 bzero(&sc->w_sigcache[0], sizeof(struct w_sigcache) * MAXCACHEITEMS);
2516 sc->w_nextcache = 0;
2517 sc->w_wrapindex = 0;
2520 /* store hw signal info in cache.
2521 * index is MAC address, but an ip src gets stored too
2522 * There are two filters here controllable via sysctl:
2523 * throw out unicast (on by default, but can be turned off)
2524 * throw out non-ip (on by default, but can be turned off)
2527 void wl_cache_store (struct wl_softc *sc, int base, struct ether_header *eh,
2531 struct ip *ip = NULL; /* Avoid GCC warning */
2533 int signal, silence;
2534 int w_insertcache; /* computed index for cache entry storage */
2535 int ipflag = wl_cache_iponly;
2540 * 2. configurable filter to throw out unicast packets,
2541 * keep multicast only.
2545 /* reject if not IP packet
2547 if ( wl_cache_iponly && (ntohs(eh->ether_type) != 0x800)) {
2551 /* check if broadcast or multicast packet. we toss
2554 if (wl_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) {
2558 /* find the ip header. we want to store the ip_src
2559 * address. use the mtod macro(in mbuf.h)
2560 * to typecast m to struct ip *
2563 ip = mtod(m, struct ip *);
2566 /* do a linear search for a matching MAC address
2567 * in the cache table
2568 * . MAC address is 6 bytes,
2569 * . var w_nextcache holds total number of entries already cached
2571 for (i = 0; i < sc->w_nextcache; i++) {
2572 if (! bcmp(eh->ether_shost, sc->w_sigcache[i].macsrc, 6 )) {
2574 * so we already have this entry,
2575 * update the data, and LRU age
2581 /* did we find a matching mac address?
2582 * if yes, then overwrite a previously existing cache entry
2584 if (i < sc->w_nextcache ) {
2587 /* else, have a new address entry,so
2588 * add this new entry,
2589 * if table full, then we need to replace entry
2593 /* check for space in cache table
2594 * note: w_nextcache also holds number of entries
2595 * added in the cache table
2597 if ( sc->w_nextcache < MAXCACHEITEMS ) {
2598 w_insertcache = sc->w_nextcache;
2600 sc->w_sigitems = sc->w_nextcache;
2602 /* no space found, so simply wrap with wrap index
2603 * and "zap" the next entry
2606 if (sc->w_wrapindex == MAXCACHEITEMS) {
2607 sc->w_wrapindex = 0;
2609 w_insertcache = sc->w_wrapindex++;
2613 /* invariant: w_insertcache now points at some slot
2616 if (w_insertcache < 0 || w_insertcache >= MAXCACHEITEMS) {
2618 "wl_cache_store, bad index: %d of [0..%d], gross cache error\n",
2619 w_insertcache, MAXCACHEITEMS);
2623 /* store items in cache
2626 * .signal (0..63) ,silence (0..63) ,quality (0..15)
2629 sc->w_sigcache[w_insertcache].ipsrc = ip->ip_src.s_addr;
2631 bcopy( eh->ether_shost, sc->w_sigcache[w_insertcache].macsrc, 6);
2632 signal = sc->w_sigcache[w_insertcache].signal = wlmmcread(base, MMC_SIGNAL_LVL) & 0x3f;
2633 silence = sc->w_sigcache[w_insertcache].silence = wlmmcread(base, MMC_SILENCE_LVL) & 0x3f;
2634 sc->w_sigcache[w_insertcache].quality = wlmmcread(base, MMC_SIGN_QUAL) & 0x0f;
2636 sc->w_sigcache[w_insertcache].snr =
2639 sc->w_sigcache[w_insertcache].snr = 0;
2643 #endif /* WLCACHE */