| 1 | /* $FreeBSD: src/sys/i386/isa/if_wl.c,v 1.27.2.2 2000/07/17 21:24:32 archie Exp $ */ |
| 2 | /* $DragonFly: src/sys/dev/netif/wl/if_wl.c,v 1.26 2005/11/28 17:13:44 dillon Exp $ */ |
| 3 | /* |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain all copyright |
| 8 | * notices, this list of conditions and the following disclaimer. |
| 9 | * 2. The names of the authors may not be used to endorse or promote products |
| 10 | * derived from this software withough specific prior written permission |
| 11 | * |
| 12 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR |
| 13 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 14 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 15 | * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 16 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 17 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 18 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 19 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 20 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 21 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 22 | * |
| 23 | */ |
| 24 | /* |
| 25 | * if_wl.c - original MACH, then BSDI ISA wavelan driver |
| 26 | * ported to mach by Anders Klemets |
| 27 | * to BSDI by Robert Morris |
| 28 | * to FreeBSD by Jim Binkley |
| 29 | * to FreeBSD 2.2+ by Michael Smith |
| 30 | * |
| 31 | * 2.2 update: |
| 32 | * Changed interface to match 2.1-2.2 differences. |
| 33 | * Implement IRQ selection logic in wlprobe() |
| 34 | * Implement PSA updating. |
| 35 | * Pruned heading comments for relevance. |
| 36 | * Ripped out all the 'interface counters' cruft. |
| 37 | * Cut the missing-interrupt timer back to 100ms. |
| 38 | * 2.2.1 update: |
| 39 | * now supports all multicast mode (mrouted will work), |
| 40 | * but unfortunately must do that by going into promiscuous mode |
| 41 | * NWID sysctl added so that normally promiscuous mode is NWID-specific |
| 42 | * but can be made NWID-inspecific |
| 43 | * 7/14/97 jrb |
| 44 | * |
| 45 | * Work done: |
| 46 | * Ported to FreeBSD, got promiscuous mode working with bpfs, |
| 47 | * and rewired timer routine. The i82586 will hang occasionally on output |
| 48 | * and the watchdog timer will kick it if so and log an entry. |
| 49 | * 2 second timeout there. Apparently the chip loses an interrupt. |
| 50 | * Code borrowed from if_ie.c for watchdog timer. |
| 51 | * |
| 52 | * The wavelan card is a 2mbit radio modem that emulates ethernet; |
| 53 | * i.e., it uses MAC addresses. This should not be a surprise since |
| 54 | * it uses an ethernet controller as a major hw item. |
| 55 | * It can broadcast, unicast or apparently multicast in a base cell |
| 56 | * using a omni-directional antennae that is |
| 57 | * about 800 feet around the base cell barring walls and metal. |
| 58 | * With directional antennae, it can be used point to point over a mile |
| 59 | * or so apparently (haven't tried that). |
| 60 | * |
| 61 | * There are ISA and pcmcia versions (not supported by this code). |
| 62 | * The ISA card has an Intel 82586 lan controller on it. It consists |
| 63 | * of 2 pieces of hw, the lan controller (intel) and a radio-modem. |
| 64 | * The latter has an extra set of controller registers that has nothing |
| 65 | * to do with the i82586 and allows setting and monitoring of radio |
| 66 | * signal strength, etc. There is a nvram area called the PSA that |
| 67 | * contains a number of setup variables including the IRQ and so-called |
| 68 | * NWID or Network ID. The NWID must be set the same for all radio |
| 69 | * cards to communicate (unless you are using the ATT/NCR roaming feature |
| 70 | * with their access points. There is no support for that here. Roaming |
| 71 | * involves a link-layer beacon sent out from the access points. End |
| 72 | * stations monitor the signal strength and only use the strongest |
| 73 | * access point). This driver assumes that the base ISA port, IRQ, |
| 74 | * and NWID are first set in nvram via the dos-side "instconf.exe" utility |
| 75 | * supplied with the card. This driver takes the ISA port from |
| 76 | * the kernel configuration setup, and then determines the IRQ either |
| 77 | * from the kernel config (if an explicit IRQ is set) or from the |
| 78 | * PSA on the card if not. |
| 79 | * The hw also magically just uses the IRQ set in the nvram. |
| 80 | * The NWID is used magically as well by the radio-modem |
| 81 | * to determine which packets to keep or throw out. |
| 82 | * |
| 83 | * sample config: |
| 84 | * |
| 85 | * device wl0 at isa? port 0x300 net irq ? |
| 86 | * |
| 87 | * Ifdefs: |
| 88 | * 1. WLDEBUG. (off) - if turned on enables IFF_DEBUG set via ifconfig debug |
| 89 | * 2. MULTICAST (on) - turned on and works up to and including mrouted |
| 90 | * 3. WLCACHE (off) - define to turn on a signal strength |
| 91 | * (and other metric) cache that is indexed by sender MAC address. |
| 92 | * Apps can read this out to learn the remote signal strength of a |
| 93 | * sender. Note that it has a switch so that it only stores |
| 94 | * broadcast/multicast senders but it could be set to store unicast |
| 95 | * too only. Size is hardwired in if_wl_wavelan.h |
| 96 | * |
| 97 | * one further note: promiscuous mode is a curious thing. In this driver, |
| 98 | * promiscuous mode apparently CAN catch ALL packets and ignore the NWID |
| 99 | * setting. This is probably more useful in a sense (for snoopers) if |
| 100 | * you are interested in all traffic as opposed to if you are interested |
| 101 | * in just your own. There is a driver specific sysctl to turn promiscuous |
| 102 | * from just promiscuous to wildly promiscuous... |
| 103 | * |
| 104 | * This driver also knows how to load the synthesizers in the 2.4 Gz |
| 105 | * ISA Half-card, Product number 847647476 (USA/FCC IEEE Channel set). |
| 106 | * This product consists of a "mothercard" that contains the 82586, |
| 107 | * NVRAM that holds the PSA, and the ISA-buss interface custom ASIC. |
| 108 | * The radio transceiver is a "daughtercard" called the WaveMODEM which |
| 109 | * connects to the mothercard through two single-inline connectors: a |
| 110 | * 20-pin connector provides DC-power and modem signals, and a 3-pin |
| 111 | * connector which exports the antenna connection. The code herein |
| 112 | * loads the receive and transmit synthesizers and the corresponding |
| 113 | * transmitter output power value from an EEPROM controlled through |
| 114 | * additional registers via the MMC. The EEPROM address selected |
| 115 | * are those whose values are preset by the DOS utility programs |
| 116 | * provided with the product, and this provides compatible operation |
| 117 | * with the DOS Packet Driver software. A future modification will |
| 118 | * add the necessary functionality to this driver and to the wlconfig |
| 119 | * utility to completely replace the DOS Configuration Utilities. |
| 120 | * The 2.4 Gz WaveMODEM is described in document number 407-024692/E, |
| 121 | * and is available through Lucent Technologies OEM supply channels. |
| 122 | * --RAB 1997/06/08. |
| 123 | */ |
| 124 | |
| 125 | #define MULTICAST 1 |
| 126 | |
| 127 | /* |
| 128 | * Olivetti PC586 Mach Ethernet driver v1.0 |
| 129 | * Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989 |
| 130 | * All rights reserved. |
| 131 | * |
| 132 | */ |
| 133 | |
| 134 | /* |
| 135 | Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc., |
| 136 | Cupertino, California. |
| 137 | |
| 138 | All Rights Reserved |
| 139 | |
| 140 | Permission to use, copy, modify, and distribute this software and |
| 141 | its documentation for any purpose and without fee is hereby |
| 142 | granted, provided that the above copyright notice appears in all |
| 143 | copies and that both the copyright notice and this permission notice |
| 144 | appear in supporting documentation, and that the name of Olivetti |
| 145 | not be used in advertising or publicity pertaining to distribution |
| 146 | of the software without specific, written prior permission. |
| 147 | |
| 148 | OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE |
| 149 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, |
| 150 | IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR |
| 151 | CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| 152 | LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, |
| 153 | NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION |
| 154 | WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 155 | */ |
| 156 | |
| 157 | /* |
| 158 | Copyright 1988, 1989 by Intel Corporation, Santa Clara, California. |
| 159 | |
| 160 | All Rights Reserved |
| 161 | |
| 162 | Permission to use, copy, modify, and distribute this software and |
| 163 | its documentation for any purpose and without fee is hereby |
| 164 | granted, provided that the above copyright notice appears in all |
| 165 | copies and that both the copyright notice and this permission notice |
| 166 | appear in supporting documentation, and that the name of Intel |
| 167 | not be used in advertising or publicity pertaining to distribution |
| 168 | of the software without specific, written prior permission. |
| 169 | |
| 170 | INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE |
| 171 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, |
| 172 | IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR |
| 173 | CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| 174 | LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, |
| 175 | NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION |
| 176 | WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 177 | */ |
| 178 | |
| 179 | /* |
| 180 | * NOTE: |
| 181 | * by rvb: |
| 182 | * 1. The best book on the 82586 is: |
| 183 | * LAN Components User's Manual by Intel |
| 184 | * The copy I found was dated 1984. This really tells you |
| 185 | * what the state machines are doing |
| 186 | * 2. In the current design, we only do one write at a time, |
| 187 | * though the hardware is capable of chaining and possibly |
| 188 | * even batching. The problem is that we only make one |
| 189 | * transmit buffer available in sram space. |
| 190 | */ |
| 191 | |
| 192 | #include "opt_wavelan.h" |
| 193 | #include "opt_inet.h" |
| 194 | |
| 195 | #include <sys/param.h> |
| 196 | #include <sys/systm.h> |
| 197 | #include <sys/sockio.h> |
| 198 | #include <sys/mbuf.h> |
| 199 | #include <sys/socket.h> |
| 200 | #include <sys/syslog.h> |
| 201 | #include <sys/proc.h> |
| 202 | #include <sys/serialize.h> |
| 203 | #include <sys/thread2.h> |
| 204 | |
| 205 | #include <sys/kernel.h> |
| 206 | #include <sys/sysctl.h> |
| 207 | |
| 208 | #include <machine/bus.h> |
| 209 | #include <machine/resource.h> |
| 210 | #include <sys/bus.h> |
| 211 | #include <sys/rman.h> |
| 212 | |
| 213 | #include <net/ethernet.h> |
| 214 | #include <net/if.h> |
| 215 | #include <net/if_arp.h> |
| 216 | #include <net/ifq_var.h> |
| 217 | #include <net/if_dl.h> |
| 218 | |
| 219 | #ifdef INET |
| 220 | #include <netinet/in.h> |
| 221 | #include <netinet/in_systm.h> |
| 222 | #include <netinet/ip.h> |
| 223 | #include <netinet/if_ether.h> |
| 224 | #endif |
| 225 | |
| 226 | #include <net/bpf.h> |
| 227 | |
| 228 | #include <bus/isa/isavar.h> |
| 229 | #include <bus/isa/i386/isa_device.h> |
| 230 | #include "if_wl_i82586.h" /* Definitions for the Intel chip */ |
| 231 | |
| 232 | /* was 1000 in original, fed to DELAY(x) */ |
| 233 | #define DELAYCONST 1000 |
| 234 | #include "if_wl.h" |
| 235 | #include <machine/if_wl_wavelan.h> |
| 236 | |
| 237 | static char t_packet[ETHERMTU + sizeof(struct ether_header) + sizeof(long)]; |
| 238 | |
| 239 | struct wl_softc{ |
| 240 | struct arpcom wl_ac; /* Ethernet common part */ |
| 241 | #define wl_if wl_ac.ac_if /* network visible interface */ |
| 242 | #define wl_addr wl_ac.ac_enaddr /* hardware address */ |
| 243 | u_char psa[0x40]; |
| 244 | u_char nwid[2]; /* current radio modem nwid */ |
| 245 | short base; |
| 246 | int flags; |
| 247 | int tbusy; /* flag to determine if xmit is busy */ |
| 248 | u_short begin_fd; |
| 249 | u_short end_fd; |
| 250 | u_short end_rbd; |
| 251 | u_short hacr; /* latest host adapter CR command */ |
| 252 | short mode; |
| 253 | u_char chan24; /* 2.4 Gz: channel number/EEPROM Area # */ |
| 254 | u_short freq24; /* 2.4 Gz: resulting frequency */ |
| 255 | int rid_ioport; |
| 256 | int rid_irq; |
| 257 | struct resource *res_ioport; |
| 258 | struct resource *res_irq; |
| 259 | void *intr_handle; |
| 260 | struct callout watchdog_ch; |
| 261 | #ifdef WLCACHE |
| 262 | int w_sigitems; /* number of cached entries */ |
| 263 | /* array of cache entries */ |
| 264 | struct w_sigcache w_sigcache[ MAXCACHEITEMS ]; |
| 265 | int w_nextcache; /* next free cache entry */ |
| 266 | int w_wrapindex; /* next "free" cache entry */ |
| 267 | #endif |
| 268 | }; |
| 269 | |
| 270 | /* |
| 271 | * XXX The Wavelan appears to be prone to dropping stuff if you talk to |
| 272 | * it too fast. This disgusting hack inserts a delay after each packet |
| 273 | * is queued which helps avoid this behaviour on fast systems. |
| 274 | */ |
| 275 | static int wl_xmit_delay = 250; |
| 276 | SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_delay, CTLFLAG_RW, &wl_xmit_delay, 0, ""); |
| 277 | |
| 278 | /* |
| 279 | * not XXX, but ZZZ (bizarre). |
| 280 | * promiscuous mode can be toggled to ignore NWIDs. By default, |
| 281 | * it does not. Caution should be exercised about combining |
| 282 | * this mode with IFF_ALLMULTI which puts this driver in |
| 283 | * promiscuous mode. |
| 284 | */ |
| 285 | static int wl_ignore_nwid = 0; |
| 286 | SYSCTL_INT(_machdep, OID_AUTO, wl_ignore_nwid, CTLFLAG_RW, &wl_ignore_nwid, 0, ""); |
| 287 | |
| 288 | /* |
| 289 | * Emit diagnostics about transmission problems |
| 290 | */ |
| 291 | static int xmt_watch = 0; |
| 292 | SYSCTL_INT(_machdep, OID_AUTO, wl_xmit_watch, CTLFLAG_RW, &xmt_watch, 0, ""); |
| 293 | |
| 294 | /* |
| 295 | * Collect SNR statistics |
| 296 | */ |
| 297 | static int gathersnr = 0; |
| 298 | SYSCTL_INT(_machdep, OID_AUTO, wl_gather_snr, CTLFLAG_RW, &gathersnr, 0, ""); |
| 299 | |
| 300 | static int wlprobe(device_t); |
| 301 | static int wlattach(device_t); |
| 302 | static int wldetach(device_t); |
| 303 | static int wl_alloc_resources(device_t); |
| 304 | static void wl_free_resources(device_t); |
| 305 | static void wlstart(struct ifnet *); |
| 306 | static void wlinit(void *); |
| 307 | static int wlioctl(struct ifnet *, u_long, caddr_t, struct ucred *); |
| 308 | static timeout_t wlwatchdog; |
| 309 | static void wlintr(void *); |
| 310 | static void wlxmt(struct wl_softc *, struct mbuf *); |
| 311 | static int wldiag(struct wl_softc *); |
| 312 | static int wlconfig(struct wl_softc *); |
| 313 | static int wlcmd(struct wl_softc *, const char *); |
| 314 | static void wlmmcstat(struct wl_softc *); |
| 315 | static u_short wlbldru(struct wl_softc *); |
| 316 | static u_short wlmmcread(u_int, u_short); |
| 317 | static void wlinitmmc(struct wl_softc *); |
| 318 | static int wlhwrst(struct wl_softc *); |
| 319 | static void wlrustrt(struct wl_softc *); |
| 320 | static void wlbldcu(struct wl_softc *); |
| 321 | static int wlack(struct wl_softc *); |
| 322 | static int wlread(struct wl_softc *, u_short); |
| 323 | static void getsnr(struct wl_softc *); |
| 324 | static void wlrcv(struct wl_softc *); |
| 325 | static int wlrequeue(struct wl_softc *, u_short); |
| 326 | static void wlsftwsleaze(u_short *, u_char **, struct mbuf **); |
| 327 | static void wlhdwsleaze(u_short *, u_char **, struct mbuf **); |
| 328 | static void wltbd(struct wl_softc *); |
| 329 | static void wlgetpsa(int, u_char *); |
| 330 | static void wlsetpsa(struct wl_softc *); |
| 331 | static u_short wlpsacrc(u_char *); |
| 332 | static void wldump(struct wl_softc *); |
| 333 | #ifdef WLCACHE |
| 334 | static void wl_cache_store(struct wl_softc *, int, struct ether_header *, |
| 335 | struct mbuf *); |
| 336 | static void wl_cache_zero(struct wl_softc *); |
| 337 | #endif |
| 338 | #ifdef MULTICAST |
| 339 | # if defined(__FreeBSD__) && __FreeBSD_version < 300000 |
| 340 | static int check_allmulti(struct wl_softc *); |
| 341 | # endif |
| 342 | #endif |
| 343 | |
| 344 | static device_method_t wl_methods[] = { |
| 345 | DEVMETHOD(device_probe, wlprobe), |
| 346 | DEVMETHOD(device_attach, wlattach), |
| 347 | DEVMETHOD(device_detach, wldetach), |
| 348 | { 0, 0 } |
| 349 | }; |
| 350 | |
| 351 | static driver_t wl_driver = { |
| 352 | "wl", |
| 353 | wl_methods, |
| 354 | sizeof(struct wl_softc) |
| 355 | }; |
| 356 | |
| 357 | devclass_t wl_devclass; |
| 358 | DECLARE_DUMMY_MODULE(if_wl); |
| 359 | DRIVER_MODULE(wl, isa, wl_driver, wl_devclass, 0, 0); |
| 360 | MODULE_DEPEND(wl, isa, 1, 1, 1); |
| 361 | |
| 362 | static struct isa_pnp_id wl_ids[] = { |
| 363 | { 0, NULL } |
| 364 | }; |
| 365 | |
| 366 | /* array for maping irq numbers to values for the irq parameter register */ |
| 367 | static int irqvals[16] = { |
| 368 | 0, 0, 0, 0x01, 0x02, 0x04, 0, 0x08, 0, 0, 0x10, 0x20, 0x40, 0, 0, 0x80 |
| 369 | }; |
| 370 | |
| 371 | /* |
| 372 | * wlprobe: |
| 373 | * |
| 374 | * This function "probes" or checks for the WaveLAN board on the bus to |
| 375 | * see if it is there. As far as I can tell, the best break between this |
| 376 | * routine and the attach code is to simply determine whether the board |
| 377 | * is configured in properly. Currently my approach to this is to write |
| 378 | * and read a word from the SRAM on the board being probed. If the word |
| 379 | * comes back properly then we assume the board is there. The config |
| 380 | * code expects to see a successful return from the probe routine before |
| 381 | * attach will be called. |
| 382 | */ |
| 383 | static int |
| 384 | wlprobe(device_t dev) |
| 385 | { |
| 386 | struct wl_softc *sc; |
| 387 | short base; |
| 388 | const char *str = "wl%d: board out of range [0..%d]\n"; |
| 389 | u_char inbuf[100]; |
| 390 | int irq, error; |
| 391 | |
| 392 | error = ISA_PNP_PROBE(device_get_parent(dev), dev, wl_ids); |
| 393 | if (error == ENXIO || error == 0) |
| 394 | return (error); |
| 395 | |
| 396 | sc = device_get_softc(dev); |
| 397 | error = wl_alloc_resources(dev); |
| 398 | if (error) |
| 399 | return error; |
| 400 | |
| 401 | base = rman_get_start(sc->res_ioport); |
| 402 | |
| 403 | /* TBD. not true. |
| 404 | * regular CMD() will not work, since no softc yet |
| 405 | */ |
| 406 | #define PCMD(base, hacr) outw((base), (hacr)) |
| 407 | |
| 408 | PCMD(base, HACR_RESET); /* reset the board */ |
| 409 | DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */ |
| 410 | PCMD(base, HACR_RESET); /* reset the board */ |
| 411 | DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */ |
| 412 | |
| 413 | /* clear reset command and set PIO#1 in autoincrement mode */ |
| 414 | PCMD(base, HACR_DEFAULT); |
| 415 | PCMD(base, HACR_DEFAULT); |
| 416 | outw(PIOR1(base), 0); /* go to beginning of RAM */ |
| 417 | outsw(PIOP1(base), str, strlen(str)/2+1); /* write string */ |
| 418 | |
| 419 | outw(PIOR1(base), 0); /* rewind */ |
| 420 | insw(PIOP1(base), inbuf, strlen(str)/2+1); /* read result */ |
| 421 | |
| 422 | if (bcmp(str, inbuf, strlen(str))) { |
| 423 | error = ENXIO; |
| 424 | goto fail; |
| 425 | } |
| 426 | |
| 427 | sc->chan24 = 0; /* 2.4 Gz: config channel */ |
| 428 | sc->freq24 = 0; /* 2.4 Gz: frequency */ |
| 429 | |
| 430 | /* read the PSA from the board into temporary storage */ |
| 431 | wlgetpsa(base, inbuf); |
| 432 | |
| 433 | /* We read the IRQ value from the PSA on the board. */ |
| 434 | for (irq = 15; irq >= 0; irq--) |
| 435 | if (irqvals[irq] == inbuf[WLPSA_IRQNO]) |
| 436 | break; |
| 437 | if ((irq == 0) || (irqvals[irq] == 0)){ |
| 438 | device_printf(dev, "PSA corrupt (invalid IRQ value)\n"); |
| 439 | } else { |
| 440 | u_long sirq, dummy; |
| 441 | |
| 442 | /* |
| 443 | * If the IRQ requested by the PSA is already claimed by another |
| 444 | * device, the board won't work, but the user can still access the |
| 445 | * driver to change the IRQ. |
| 446 | */ |
| 447 | if (bus_get_resource(dev, SYS_RES_IRQ, 0, &sirq, &dummy)) |
| 448 | goto fail; |
| 449 | if (irq != (int)sirq) |
| 450 | device_printf(dev, "board is configured for interrupt %d\n", irq); |
| 451 | } |
| 452 | error = 0; |
| 453 | |
| 454 | fail: |
| 455 | wl_free_resources(dev); |
| 456 | return (error); |
| 457 | } |
| 458 | |
| 459 | /* |
| 460 | * wlattach: |
| 461 | * |
| 462 | * This function attaches a WaveLAN board to the "system". The rest of |
| 463 | * runtime structures are initialized here (this routine is called after |
| 464 | * a successful probe of the board). Once the ethernet address is read |
| 465 | * and stored, the board's ifnet structure is attached and readied. |
| 466 | */ |
| 467 | static int |
| 468 | wlattach(device_t dev) |
| 469 | { |
| 470 | struct wl_softc *sc; |
| 471 | short base; |
| 472 | int i, j, error; |
| 473 | struct ifnet *ifp; |
| 474 | |
| 475 | sc = device_get_softc(dev); |
| 476 | |
| 477 | ifp = &sc->wl_if; |
| 478 | if_initname(ifp, device_get_name(dev), device_get_unit(dev)); |
| 479 | |
| 480 | error = wl_alloc_resources(dev); |
| 481 | if (error) |
| 482 | return error; |
| 483 | |
| 484 | base = rman_get_start(sc->res_ioport); |
| 485 | |
| 486 | #ifdef WLDEBUG |
| 487 | device_printf(dev, "%s: base %x, unit %d\n", |
| 488 | __func__, base, device_get_unit(dev)); |
| 489 | #endif |
| 490 | |
| 491 | sc->base = base; |
| 492 | sc->flags = 0; |
| 493 | sc->mode = 0; |
| 494 | sc->hacr = HACR_RESET; |
| 495 | callout_init(&sc->watchdog_ch); |
| 496 | CMD(sc); /* reset the board */ |
| 497 | DELAY(DELAYCONST); /* >> 4 clocks at 6MHz */ |
| 498 | |
| 499 | /* clear reset command and set PIO#2 in parameter access mode */ |
| 500 | sc->hacr = (HACR_DEFAULT & ~HACR_16BITS); |
| 501 | CMD(sc); |
| 502 | |
| 503 | /* Read the PSA from the board for our later reference */ |
| 504 | wlgetpsa(base, sc->psa); |
| 505 | |
| 506 | /* fetch NWID */ |
| 507 | sc->nwid[0] = sc->psa[WLPSA_NWID]; |
| 508 | sc->nwid[1] = sc->psa[WLPSA_NWID+1]; |
| 509 | |
| 510 | /* fetch MAC address - decide which one first */ |
| 511 | if (sc->psa[WLPSA_MACSEL] & 1) { |
| 512 | j = WLPSA_LOCALMAC; |
| 513 | } else { |
| 514 | j = WLPSA_UNIMAC; |
| 515 | } |
| 516 | for(i=0; i < WAVELAN_ADDR_SIZE; ++i) { |
| 517 | sc->wl_addr[i] = sc->psa[j + i]; |
| 518 | } |
| 519 | |
| 520 | /* enter normal 16 bit mode operation */ |
| 521 | sc->hacr = HACR_DEFAULT; |
| 522 | CMD(sc); |
| 523 | |
| 524 | wlinitmmc(sc); |
| 525 | outw(PIOR1(base), OFFSET_SCB + 8); /* address of scb_crcerrs */ |
| 526 | outw(PIOP1(base), 0); /* clear scb_crcerrs */ |
| 527 | outw(PIOP1(base), 0); /* clear scb_alnerrs */ |
| 528 | outw(PIOP1(base), 0); /* clear scb_rscerrs */ |
| 529 | outw(PIOP1(base), 0); /* clear scb_ovrnerrs */ |
| 530 | |
| 531 | ifp->if_softc = sc; |
| 532 | ifp->if_mtu = WAVELAN_MTU; |
| 533 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; |
| 534 | #ifdef WLDEBUG |
| 535 | ifp->if_flags |= IFF_DEBUG; |
| 536 | #endif |
| 537 | #if MULTICAST |
| 538 | ifp->if_flags |= IFF_MULTICAST; |
| 539 | #endif /* MULTICAST */ |
| 540 | ifp->if_init = wlinit; |
| 541 | ifp->if_start = wlstart; |
| 542 | ifp->if_ioctl = wlioctl; |
| 543 | ifp->if_timer = 0; /* paranoia */ |
| 544 | /* no entries |
| 545 | ifp->if_watchdog |
| 546 | ifp->if_done |
| 547 | ifp->if_reset |
| 548 | */ |
| 549 | ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); |
| 550 | ifq_set_ready(&ifp->if_snd); |
| 551 | ether_ifattach(ifp, sc->wl_ac.ac_enaddr, NULL); |
| 552 | |
| 553 | if (sc->freq24) |
| 554 | printf(", Freq %d MHz",sc->freq24); /* 2.4 Gz */ |
| 555 | printf("\n"); /* 2.4 Gz */ |
| 556 | |
| 557 | error = bus_setup_intr(dev, sc->res_irq, INTR_NETSAFE, |
| 558 | wlintr, sc, &sc->intr_handle, |
| 559 | ifp->if_serializer); |
| 560 | if (error) { |
| 561 | device_printf(dev, "setup irq fail!\n"); |
| 562 | ether_ifdetach(ifp); |
| 563 | wl_free_resources(dev); |
| 564 | return error; |
| 565 | } |
| 566 | |
| 567 | if (bootverbose) |
| 568 | wldump(sc); |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | static int |
| 573 | wldetach(device_t dev) |
| 574 | { |
| 575 | struct wl_softc *sc = device_get_softc(dev); |
| 576 | device_t parent = device_get_parent(dev); |
| 577 | struct ifnet *ifp = &sc->wl_if; |
| 578 | |
| 579 | lwkt_serialize_enter(ifp->if_serializer); |
| 580 | ether_ifdetach(ifp); |
| 581 | |
| 582 | /* reset the board */ |
| 583 | sc->hacr = HACR_RESET; |
| 584 | CMD(sc); |
| 585 | sc->hacr = HACR_DEFAULT; |
| 586 | CMD(sc); |
| 587 | |
| 588 | if (sc->intr_handle != NULL) { |
| 589 | BUS_TEARDOWN_INTR(parent, dev, sc->res_irq, sc->intr_handle); |
| 590 | sc->intr_handle = NULL; |
| 591 | } |
| 592 | |
| 593 | bus_generic_detach(dev); |
| 594 | |
| 595 | wl_free_resources(dev); |
| 596 | lwkt_serialize_exit(ifp->if_serializer); |
| 597 | return (0); |
| 598 | } |
| 599 | |
| 600 | static int |
| 601 | wl_alloc_resources(device_t dev) |
| 602 | { |
| 603 | struct wl_softc *sc = device_get_softc(dev); |
| 604 | int ports = 16; /* Number of ports */ |
| 605 | |
| 606 | sc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, |
| 607 | &sc->rid_ioport, 0ul, ~0ul, ports, RF_ACTIVE); |
| 608 | if (sc->res_ioport == NULL) |
| 609 | goto fail; |
| 610 | |
| 611 | sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, |
| 612 | &sc->rid_irq, RF_SHAREABLE | RF_ACTIVE); |
| 613 | if (sc->res_irq == NULL) |
| 614 | goto fail; |
| 615 | return (0); |
| 616 | |
| 617 | fail: |
| 618 | wl_free_resources(dev); |
| 619 | return (ENXIO); |
| 620 | } |
| 621 | |
| 622 | static void |
| 623 | wl_free_resources(device_t dev) |
| 624 | { |
| 625 | struct wl_softc *sc = device_get_softc(dev); |
| 626 | |
| 627 | if (sc->res_irq != 0) { |
| 628 | bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq); |
| 629 | bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq); |
| 630 | sc->res_irq = 0; |
| 631 | } |
| 632 | if (sc->res_ioport != 0) { |
| 633 | bus_deactivate_resource(dev, SYS_RES_IOPORT, |
| 634 | sc->rid_ioport, sc->res_ioport); |
| 635 | bus_release_resource(dev, SYS_RES_IOPORT, |
| 636 | sc->rid_ioport, sc->res_ioport); |
| 637 | sc->res_ioport = 0; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | * Print out interesting information about the 82596. |
| 643 | */ |
| 644 | static void |
| 645 | wldump(struct wl_softc *sc) |
| 646 | { |
| 647 | int base = sc->base; |
| 648 | int i; |
| 649 | |
| 650 | if_printf(&sc->wl_if, "hasr %04x\n", inw(HASR(base))); |
| 651 | |
| 652 | if_printf(&sc->wl_if, "scb at %04x:\n ", OFFSET_SCB); |
| 653 | outw(PIOR1(base), OFFSET_SCB); |
| 654 | for(i = 0; i < 8; i++) |
| 655 | printf("%04x ", inw(PIOP1(base))); |
| 656 | printf("\n"); |
| 657 | |
| 658 | if_printf(&sc->wl_if, "cu at %04x:\n ", OFFSET_CU); |
| 659 | outw(PIOR1(base), OFFSET_CU); |
| 660 | for(i = 0; i < 8; i++) |
| 661 | printf("%04x ", inw(PIOP1(base))); |
| 662 | printf("\n"); |
| 663 | |
| 664 | if_printf(&sc->wl_if, "tbd at %04x:\n ", OFFSET_TBD); |
| 665 | outw(PIOR1(base), OFFSET_TBD); |
| 666 | for(i = 0; i < 4; i++) |
| 667 | printf("%04x ", inw(PIOP1(base))); |
| 668 | printf("\n"); |
| 669 | } |
| 670 | |
| 671 | /* Initialize the Modem Management Controller */ |
| 672 | static void |
| 673 | wlinitmmc(struct wl_softc *sc) |
| 674 | { |
| 675 | int base = sc->base; |
| 676 | int configured; |
| 677 | int mode = sc->mode; |
| 678 | int i; /* 2.4 Gz */ |
| 679 | |
| 680 | /* enter 8 bit operation */ |
| 681 | sc->hacr = (HACR_DEFAULT & ~HACR_16BITS); |
| 682 | CMD(sc); |
| 683 | |
| 684 | configured = sc->psa[WLPSA_CONFIGURED] & 1; |
| 685 | |
| 686 | /* |
| 687 | * Set default modem control parameters. Taken from NCR document |
| 688 | * 407-0024326 Rev. A |
| 689 | */ |
| 690 | MMC_WRITE(MMC_JABBER_ENABLE, 0x01); |
| 691 | MMC_WRITE(MMC_ANTEN_SEL, 0x02); |
| 692 | MMC_WRITE(MMC_IFS, 0x20); |
| 693 | MMC_WRITE(MMC_MOD_DELAY, 0x04); |
| 694 | MMC_WRITE(MMC_JAM_TIME, 0x38); |
| 695 | MMC_WRITE(MMC_DECAY_PRM, 0x00); /* obsolete ? */ |
| 696 | MMC_WRITE(MMC_DECAY_UPDAT_PRM, 0x00); |
| 697 | if (!configured) { |
| 698 | MMC_WRITE(MMC_LOOPT_SEL, 0x00); |
| 699 | if (sc->psa[WLPSA_COMPATNO] & 1) { |
| 700 | MMC_WRITE(MMC_THR_PRE_SET, 0x01); /* 0x04 for AT and 0x01 for MCA */ |
| 701 | } else { |
| 702 | MMC_WRITE(MMC_THR_PRE_SET, 0x04); /* 0x04 for AT and 0x01 for MCA */ |
| 703 | } |
| 704 | MMC_WRITE(MMC_QUALITY_THR, 0x03); |
| 705 | } else { |
| 706 | /* use configuration defaults from parameter storage area */ |
| 707 | if (sc->psa[WLPSA_NWIDENABLE] & 1) { |
| 708 | if ((mode & (MOD_PROM | MOD_ENAL)) && wl_ignore_nwid) { |
| 709 | MMC_WRITE(MMC_LOOPT_SEL, 0x40); |
| 710 | } else { |
| 711 | MMC_WRITE(MMC_LOOPT_SEL, 0x00); |
| 712 | } |
| 713 | } else { |
| 714 | MMC_WRITE(MMC_LOOPT_SEL, 0x40); /* disable network id check */ |
| 715 | } |
| 716 | MMC_WRITE(MMC_THR_PRE_SET, sc->psa[WLPSA_THRESH]); |
| 717 | MMC_WRITE(MMC_QUALITY_THR, sc->psa[WLPSA_QUALTHRESH]); |
| 718 | } |
| 719 | MMC_WRITE(MMC_FREEZE, 0x00); |
| 720 | MMC_WRITE(MMC_ENCR_ENABLE, 0x00); |
| 721 | |
| 722 | MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]); /* set NWID */ |
| 723 | MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]); |
| 724 | |
| 725 | /* enter normal 16 bit mode operation */ |
| 726 | sc->hacr = HACR_DEFAULT; |
| 727 | CMD(sc); |
| 728 | CMD(sc); /* virtualpc1 needs this! */ |
| 729 | |
| 730 | if (sc->psa[WLPSA_COMPATNO]== /* 2.4 Gz: half-card ver */ |
| 731 | WLPSA_COMPATNO_WL24B) { /* 2.4 Gz */ |
| 732 | i=sc->chan24<<4; /* 2.4 Gz: position ch # */ |
| 733 | MMC_WRITE(MMC_EEADDR,i+0x0f); /* 2.4 Gz: named ch, wc=16 */ |
| 734 | MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Synths */ |
| 735 | MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */ |
| 736 | for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */ |
| 737 | DELAY(40); /* 2.4 Gz */ |
| 738 | if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */ |
| 739 | &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */ |
| 740 | +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */ |
| 741 | break; /* 2.4 Gz: download finished */ |
| 742 | } /* 2.4 Gz */ |
| 743 | if (i==1000) { |
| 744 | if_printf(&sc->wl_if, |
| 745 | "synth load failed\n"); /* 2.4 Gz */ |
| 746 | } |
| 747 | MMC_WRITE(MMC_EEADDR,0x61); /* 2.4 Gz: default pwr, wc=2 */ |
| 748 | MMC_WRITE(MMC_EECTRL,MMC_EECTRL_DWLD+ /* 2.4 Gz: Download Xmit Pwr */ |
| 749 | MMC_EECTRL_EEOP_READ); /* 2.4 Gz: Read EEPROM */ |
| 750 | for (i=0; i<1000; ++i) { /* 2.4 Gz: wait for download */ |
| 751 | DELAY(40); /* 2.4 Gz */ |
| 752 | if ((wlmmcread(base,MMC_EECTRLstat) /* 2.4 Gz: check DWLD and */ |
| 753 | &(MMC_EECTRLstat_DWLD /* 2.4 Gz: EEBUSY */ |
| 754 | +MMC_EECTRLstat_EEBUSY))==0) /* 2.4 Gz: */ |
| 755 | break; /* 2.4 Gz: download finished */ |
| 756 | } /* 2.4 Gz */ |
| 757 | if (i==1000) { |
| 758 | if_printf(&sc->wl_if, |
| 759 | "xmit pwr load failed\n");/* 2.4 Gz */ |
| 760 | } |
| 761 | MMC_WRITE(MMC_ANALCTRL, /* 2.4 Gz: EXT ant+polarity */ |
| 762 | MMC_ANALCTRL_ANTPOL + /* 2.4 Gz: */ |
| 763 | MMC_ANALCTRL_EXTANT); /* 2.4 Gz: */ |
| 764 | i=sc->chan24<<4; /* 2.4 Gz: position ch # */ |
| 765 | MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */ |
| 766 | MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */ |
| 767 | MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */ |
| 768 | DELAY(40); /* 2.4 Gz */ |
| 769 | i = wlmmcread(base,MMC_EEDATALrv) /* 2.4 Gz: freq val */ |
| 770 | + (wlmmcread(base,MMC_EEDATAHrv)<<8); /* 2.4 Gz */ |
| 771 | sc->freq24 = (i>>6)+2400; /* 2.4 Gz: save real freq */ |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | /* |
| 776 | * wlinit: |
| 777 | * |
| 778 | * Another routine that interfaces the "if" layer to this driver. |
| 779 | * Simply resets the structures that are used by "upper layers". |
| 780 | * As well as calling wlhwrst that does reset the WaveLAN board. |
| 781 | * |
| 782 | * input : softc pointer for this interface |
| 783 | * output : structures (if structs) and board are reset |
| 784 | * |
| 785 | */ |
| 786 | static void |
| 787 | wlinit(void *xsc) |
| 788 | { |
| 789 | struct wl_softc *sc = xsc; |
| 790 | struct ifnet *ifp = &sc->wl_if; |
| 791 | int stat; |
| 792 | |
| 793 | #ifdef WLDEBUG |
| 794 | if (ifp->if_flags & IFF_DEBUG) |
| 795 | if_printf(ifp, "entered wlinit()\n"); |
| 796 | #endif |
| 797 | if ((stat = wlhwrst(sc)) == TRUE) { |
| 798 | ifp->if_flags |= IFF_RUNNING; /* same as DSF_RUNNING */ |
| 799 | /* |
| 800 | * OACTIVE is used by upper-level routines |
| 801 | * and must be set |
| 802 | */ |
| 803 | ifp->if_flags &= ~IFF_OACTIVE; /* same as tbusy below */ |
| 804 | |
| 805 | sc->flags |= DSF_RUNNING; |
| 806 | sc->tbusy = 0; |
| 807 | callout_stop(&sc->watchdog_ch); |
| 808 | |
| 809 | wlstart(ifp); |
| 810 | } else { |
| 811 | if_printf(ifp, "init(): trouble resetting board.\n"); |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | /* |
| 816 | * wlhwrst: |
| 817 | * |
| 818 | * This routine resets the WaveLAN board that corresponds to the |
| 819 | * board number passed in. |
| 820 | * |
| 821 | * input : softc pointer for this interface |
| 822 | * output : board is reset |
| 823 | * |
| 824 | */ |
| 825 | static int |
| 826 | wlhwrst(struct wl_softc *sc) |
| 827 | { |
| 828 | #ifdef WLDEBUG |
| 829 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 830 | if_printf(&sc->wl_if, "entered wlhwrst()\n"); |
| 831 | #endif |
| 832 | sc->hacr = HACR_RESET; |
| 833 | CMD(sc); /* reset the board */ |
| 834 | |
| 835 | /* clear reset command and set PIO#1 in autoincrement mode */ |
| 836 | sc->hacr = HACR_DEFAULT; |
| 837 | CMD(sc); |
| 838 | |
| 839 | #ifdef WLDEBUG |
| 840 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 841 | wlmmcstat(sc); /* Display MMC registers */ |
| 842 | #endif /* WLDEBUG */ |
| 843 | wlbldcu(sc); /* set up command unit structures */ |
| 844 | |
| 845 | if (wldiag(sc) == 0) |
| 846 | return(0); |
| 847 | |
| 848 | if (wlconfig(sc) == 0) |
| 849 | return(0); |
| 850 | /* |
| 851 | * insert code for loopback test here |
| 852 | */ |
| 853 | wlrustrt(sc); /* start receive unit */ |
| 854 | |
| 855 | /* enable interrupts */ |
| 856 | sc->hacr = (HACR_DEFAULT | HACR_INTRON); |
| 857 | CMD(sc); |
| 858 | |
| 859 | return(1); |
| 860 | } |
| 861 | |
| 862 | /* |
| 863 | * wlbldcu: |
| 864 | * |
| 865 | * This function builds up the command unit structures. It inits |
| 866 | * the scp, iscp, scb, cb, tbd, and tbuf. |
| 867 | * |
| 868 | */ |
| 869 | static void |
| 870 | wlbldcu(struct wl_softc *sc) |
| 871 | { |
| 872 | short base = sc->base; |
| 873 | scp_t scp; |
| 874 | iscp_t iscp; |
| 875 | scb_t scb; |
| 876 | ac_t cb; |
| 877 | tbd_t tbd; |
| 878 | int i; |
| 879 | |
| 880 | bzero(&scp, sizeof(scp)); |
| 881 | scp.scp_sysbus = 0; |
| 882 | scp.scp_iscp = OFFSET_ISCP; |
| 883 | scp.scp_iscp_base = 0; |
| 884 | outw(PIOR1(base), OFFSET_SCP); |
| 885 | outsw(PIOP1(base), &scp, sizeof(scp_t)/2); |
| 886 | |
| 887 | bzero(&iscp, sizeof(iscp)); |
| 888 | iscp.iscp_busy = 1; |
| 889 | iscp.iscp_scb_offset = OFFSET_SCB; |
| 890 | iscp.iscp_scb = 0; |
| 891 | iscp.iscp_scb_base = 0; |
| 892 | outw(PIOR1(base), OFFSET_ISCP); |
| 893 | outsw(PIOP1(base), &iscp, sizeof(iscp_t)/2); |
| 894 | |
| 895 | scb.scb_status = 0; |
| 896 | scb.scb_command = SCB_RESET; |
| 897 | scb.scb_cbl_offset = OFFSET_CU; |
| 898 | scb.scb_rfa_offset = OFFSET_RU; |
| 899 | scb.scb_crcerrs = 0; |
| 900 | scb.scb_alnerrs = 0; |
| 901 | scb.scb_rscerrs = 0; |
| 902 | scb.scb_ovrnerrs = 0; |
| 903 | outw(PIOR1(base), OFFSET_SCB); |
| 904 | outsw(PIOP1(base), &scb, sizeof(scb_t)/2); |
| 905 | |
| 906 | SET_CHAN_ATTN(sc); |
| 907 | |
| 908 | outw(PIOR0(base), OFFSET_ISCP + 0); /* address of iscp_busy */ |
| 909 | for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); ); |
| 910 | if (i <= 0) if_printf(&sc->wl_if, "bldcu(): iscp_busy timeout.\n"); |
| 911 | outw(PIOR0(base), OFFSET_SCB + 0); /* address of scb_status */ |
| 912 | for (i = STATUS_TRIES; i-- > 0; ) { |
| 913 | if (inw(PIOP0(base)) == (SCB_SW_CX|SCB_SW_CNA)) |
| 914 | break; |
| 915 | } |
| 916 | if (i <= 0) |
| 917 | if_printf(&sc->wl_if, "bldcu(): not ready after reset.\n"); |
| 918 | wlack(sc); |
| 919 | |
| 920 | cb.ac_status = 0; |
| 921 | cb.ac_command = AC_CW_EL; /* NOP */ |
| 922 | cb.ac_link_offset = OFFSET_CU; |
| 923 | outw(PIOR1(base), OFFSET_CU); |
| 924 | outsw(PIOP1(base), &cb, 6/2); |
| 925 | |
| 926 | tbd.act_count = 0; |
| 927 | tbd.next_tbd_offset = I82586NULL; |
| 928 | tbd.buffer_addr = 0; |
| 929 | tbd.buffer_base = 0; |
| 930 | outw(PIOR1(base), OFFSET_TBD); |
| 931 | outsw(PIOP1(base), &tbd, sizeof(tbd_t)/2); |
| 932 | } |
| 933 | |
| 934 | /* |
| 935 | * wlstart: |
| 936 | * |
| 937 | * send a packet |
| 938 | * |
| 939 | * input : pointer the appropriate "if" struct |
| 940 | * output : stuff sent to board if any there |
| 941 | * |
| 942 | */ |
| 943 | static void |
| 944 | wlstart(struct ifnet *ifp) |
| 945 | { |
| 946 | struct mbuf *m; |
| 947 | struct wl_softc *sc = ifp->if_softc; |
| 948 | short base = sc->base; |
| 949 | int scb_status, cu_status, scb_command; |
| 950 | |
| 951 | #ifdef WLDEBUG |
| 952 | if (ifp->if_flags & IFF_DEBUG) |
| 953 | if_printf(ifp, "entered wlstart()\n"); |
| 954 | #endif |
| 955 | |
| 956 | outw(PIOR1(base), OFFSET_CU); |
| 957 | cu_status = inw(PIOP1(base)); |
| 958 | outw(PIOR0(base),OFFSET_SCB + 0); /* scb_status */ |
| 959 | scb_status = inw(PIOP0(base)); |
| 960 | outw(PIOR0(base), OFFSET_SCB + 2); |
| 961 | scb_command = inw(PIOP0(base)); |
| 962 | |
| 963 | /* |
| 964 | * don't need OACTIVE check as tbusy here checks to see |
| 965 | * if we are already busy |
| 966 | */ |
| 967 | if (sc->tbusy) { |
| 968 | if((scb_status & 0x0700) == SCB_CUS_IDLE && |
| 969 | (cu_status & AC_SW_B) == 0){ |
| 970 | sc->tbusy = 0; |
| 971 | callout_stop(&sc->watchdog_ch); |
| 972 | ifp->if_flags &= ~IFF_OACTIVE; |
| 973 | /* |
| 974 | * This is probably just a race. The xmt'r is just |
| 975 | * became idle but WE have masked interrupts so ... |
| 976 | */ |
| 977 | #ifdef WLDEBUG |
| 978 | if_printf(ifp, "CU idle, scb %04x %04x cu %04x\n", |
| 979 | scb_status, scb_command, cu_status); |
| 980 | #endif |
| 981 | if (xmt_watch) if_printf(ifp, "!!\n"); |
| 982 | } else { |
| 983 | return; /* genuinely still busy */ |
| 984 | } |
| 985 | } else if((scb_status & 0x0700) == SCB_CUS_ACTV || |
| 986 | (cu_status & AC_SW_B)){ |
| 987 | #ifdef WLDEBUG |
| 988 | if_printf(ifp, "CU unexpectedly busy; scb %04x cu %04x\n", |
| 989 | scb_status, cu_status); |
| 990 | #endif |
| 991 | if (xmt_watch) if_printf(ifp, "busy?!"); |
| 992 | return; /* hey, why are we busy? */ |
| 993 | } |
| 994 | |
| 995 | /* get ourselves some data */ |
| 996 | ifp = &(sc->wl_if); |
| 997 | m = ifq_dequeue(&ifp->if_snd, NULL); |
| 998 | if (m != NULL) { |
| 999 | BPF_MTAP(ifp, m); |
| 1000 | sc->tbusy++; |
| 1001 | /* set the watchdog timer so that if the board |
| 1002 | * fails to interrupt we will restart |
| 1003 | */ |
| 1004 | /* try 10 ticks, not very long */ |
| 1005 | callout_reset(&sc->watchdog_ch, 10, wlwatchdog, sc); |
| 1006 | ifp->if_flags |= IFF_OACTIVE; |
| 1007 | ifp->if_opackets++; |
| 1008 | wlxmt(sc, m); |
| 1009 | } else { |
| 1010 | ifp->if_flags &= ~IFF_OACTIVE; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * wlread: |
| 1016 | * |
| 1017 | * This routine does the actual copy of data (including ethernet header |
| 1018 | * structure) from the WaveLAN to an mbuf chain that will be passed up |
| 1019 | * to the "if" (network interface) layer. NOTE: we currently |
| 1020 | * don't handle trailer protocols, so if that is needed, it will |
| 1021 | * (at least in part) be added here. For simplicities sake, this |
| 1022 | * routine copies the receive buffers from the board into a local (stack) |
| 1023 | * buffer until the frame has been copied from the board. Once in |
| 1024 | * the local buffer, the contents are copied to an mbuf chain that |
| 1025 | * is then enqueued onto the appropriate "if" queue. |
| 1026 | * |
| 1027 | * input : softc pointer for this interface and |
| 1028 | * an frame descriptor address |
| 1029 | * output : the packet is put into an mbuf chain, and passed up |
| 1030 | * assumes : if any errors occur, packet is "dropped on the floor" |
| 1031 | * |
| 1032 | */ |
| 1033 | static int |
| 1034 | wlread(struct wl_softc *sc, u_short fd_p) |
| 1035 | { |
| 1036 | struct ifnet *ifp = &sc->wl_if; |
| 1037 | short base = sc->base; |
| 1038 | fd_t fd; |
| 1039 | struct ether_header eh; |
| 1040 | struct mbuf *m, *tm; |
| 1041 | rbd_t rbd; |
| 1042 | u_char *mb_p; |
| 1043 | u_short mlen, len, clen; |
| 1044 | u_short bytes_in_msg, bytes_in_mbuf, bytes; |
| 1045 | |
| 1046 | |
| 1047 | #ifdef WLDEBUG |
| 1048 | if (ifp->if_flags & IFF_DEBUG) |
| 1049 | if_printf(ifp, "entered wlread()\n"); |
| 1050 | #endif |
| 1051 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { |
| 1052 | if_printf(ifp, "read(): board is not running.\n"); |
| 1053 | sc->hacr &= ~HACR_INTRON; |
| 1054 | CMD(sc); /* turn off interrupts */ |
| 1055 | } |
| 1056 | /* read ether_header info out of device memory. doesn't |
| 1057 | * go into mbuf. goes directly into eh structure |
| 1058 | */ |
| 1059 | len = sizeof(struct ether_header); /* 14 bytes */ |
| 1060 | outw(PIOR1(base), fd_p); |
| 1061 | insw(PIOP1(base), &fd, (sizeof(fd_t) - len)/2); |
| 1062 | insw(PIOP1(base), &eh, (len-2)/2); |
| 1063 | eh.ether_type = ntohs(inw(PIOP1(base))); |
| 1064 | #ifdef WLDEBUG |
| 1065 | if (ifp->if_flags & IFF_DEBUG) |
| 1066 | if_printf(ifp, "wlread: rcv packet, type is %x\n", eh.ether_type); |
| 1067 | #endif |
| 1068 | /* |
| 1069 | * WARNING. above is done now in ether_input, above may be |
| 1070 | * useful for debug. jrb |
| 1071 | */ |
| 1072 | eh.ether_type = htons(eh.ether_type); |
| 1073 | |
| 1074 | if (fd.rbd_offset == I82586NULL) { |
| 1075 | if_printf(ifp, "read(): Invalid buffer\n"); |
| 1076 | if (wlhwrst(sc) != TRUE) |
| 1077 | if_printf(ifp, "read(): hwrst trouble.\n"); |
| 1078 | return 0; |
| 1079 | } |
| 1080 | |
| 1081 | outw(PIOR1(base), fd.rbd_offset); |
| 1082 | insw(PIOP1(base), &rbd, sizeof(rbd_t)/2); |
| 1083 | bytes_in_msg = rbd.status & RBD_SW_COUNT; |
| 1084 | MGETHDR(m, MB_DONTWAIT, MT_DATA); |
| 1085 | tm = m; |
| 1086 | if (m == NULL) { |
| 1087 | /* |
| 1088 | * not only do we want to return, we need to drop the packet on |
| 1089 | * the floor to clear the interrupt. |
| 1090 | * |
| 1091 | */ |
| 1092 | if (wlhwrst(sc) != TRUE) { |
| 1093 | sc->hacr &= ~HACR_INTRON; |
| 1094 | CMD(sc); /* turn off interrupts */ |
| 1095 | if_printf(ifp, "read(): hwrst trouble.\n"); |
| 1096 | } |
| 1097 | return 0; |
| 1098 | } |
| 1099 | m->m_next = (struct mbuf *) 0; |
| 1100 | m->m_pkthdr.rcvif = ifp; |
| 1101 | m->m_pkthdr.len = 0; /* don't know this yet */ |
| 1102 | m->m_len = MHLEN; |
| 1103 | |
| 1104 | /* always use a cluster. jrb |
| 1105 | */ |
| 1106 | MCLGET(m, MB_DONTWAIT); |
| 1107 | if (m->m_flags & M_EXT) { |
| 1108 | m->m_len = MCLBYTES; |
| 1109 | } |
| 1110 | else { |
| 1111 | m_freem(m); |
| 1112 | if (wlhwrst(sc) != TRUE) { |
| 1113 | sc->hacr &= ~HACR_INTRON; |
| 1114 | CMD(sc); /* turn off interrupts */ |
| 1115 | if_printf(ifp, "read(): hwrst trouble.\n"); |
| 1116 | } |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | mlen = 0; |
| 1121 | clen = mlen; |
| 1122 | bytes_in_mbuf = m->m_len - sizeof(eh); |
| 1123 | mb_p = mtod(tm, u_char *); |
| 1124 | bytes = min(bytes_in_mbuf, bytes_in_msg); |
| 1125 | bcopy(&eh, mb_p, sizeof(eh)); |
| 1126 | mb_p += sizeof(eh); |
| 1127 | for (;;) { |
| 1128 | if (bytes & 1) { |
| 1129 | len = bytes + 1; |
| 1130 | } else { |
| 1131 | len = bytes; |
| 1132 | } |
| 1133 | outw(PIOR1(base), rbd.buffer_addr); |
| 1134 | insw(PIOP1(base), mb_p, len/2); |
| 1135 | clen += bytes; |
| 1136 | mlen += bytes; |
| 1137 | |
| 1138 | if (!(bytes_in_mbuf -= bytes)) { |
| 1139 | MGET(tm->m_next, MB_DONTWAIT, MT_DATA); |
| 1140 | tm = tm->m_next; |
| 1141 | if (tm == (struct mbuf *)0) { |
| 1142 | m_freem(m); |
| 1143 | if_printf(ifp, "read(): No mbuf nth\n"); |
| 1144 | if (wlhwrst(sc) != TRUE) { |
| 1145 | sc->hacr &= ~HACR_INTRON; |
| 1146 | CMD(sc); /* turn off interrupts */ |
| 1147 | if_printf(ifp, "read(): hwrst trouble.\n"); |
| 1148 | } |
| 1149 | return 0; |
| 1150 | } |
| 1151 | mlen = 0; |
| 1152 | tm->m_len = MLEN; |
| 1153 | bytes_in_mbuf = MLEN; |
| 1154 | mb_p = mtod(tm, u_char *); |
| 1155 | } else { |
| 1156 | mb_p += bytes; |
| 1157 | } |
| 1158 | |
| 1159 | if (!(bytes_in_msg -= bytes)) { |
| 1160 | if (rbd.status & RBD_SW_EOF || |
| 1161 | rbd.next_rbd_offset == I82586NULL) { |
| 1162 | tm->m_len = mlen; |
| 1163 | break; |
| 1164 | } else { |
| 1165 | outw(PIOR1(base), rbd.next_rbd_offset); |
| 1166 | insw(PIOP1(base), &rbd, sizeof(rbd_t)/2); |
| 1167 | bytes_in_msg = rbd.status & RBD_SW_COUNT; |
| 1168 | } |
| 1169 | } else { |
| 1170 | rbd.buffer_addr += bytes; |
| 1171 | } |
| 1172 | |
| 1173 | bytes = min(bytes_in_mbuf, bytes_in_msg); |
| 1174 | } |
| 1175 | |
| 1176 | m->m_pkthdr.len = clen; |
| 1177 | |
| 1178 | /* |
| 1179 | * If hw is in promiscuous mode (note that I said hardware, not if |
| 1180 | * IFF_PROMISC is set in ifnet flags), then if this is a unicast |
| 1181 | * packet and the MAC dst is not us, drop it. This check in normally |
| 1182 | * inside ether_input(), but IFF_MULTI causes hw promisc without |
| 1183 | * a bpf listener, so this is wrong. |
| 1184 | * Greg Troxel <gdt@ir.bbn.com>, 1998-08-07 |
| 1185 | */ |
| 1186 | /* |
| 1187 | * TBD: also discard packets where NWID does not match. |
| 1188 | * However, there does not appear to be a way to read the nwid |
| 1189 | * for a received packet. -gdt 1998-08-07 |
| 1190 | */ |
| 1191 | if ( |
| 1192 | #ifdef WL_USE_IFNET_PROMISC_CHECK /* not defined */ |
| 1193 | (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) |
| 1194 | #else |
| 1195 | /* hw is in promisc mode if this is true */ |
| 1196 | (sc->mode & (MOD_PROM | MOD_ENAL)) |
| 1197 | #endif |
| 1198 | && |
| 1199 | (eh.ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ |
| 1200 | bcmp(eh.ether_dhost, sc->wl_ac.ac_enaddr, |
| 1201 | sizeof(eh.ether_dhost)) != 0 ) { |
| 1202 | m_freem(m); |
| 1203 | return 1; |
| 1204 | } |
| 1205 | |
| 1206 | #ifdef WLDEBUG |
| 1207 | if (ifp->if_flags & IFF_DEBUG) |
| 1208 | if_printf(ifp, "wlrecv %d bytes\n", clen); |
| 1209 | #endif |
| 1210 | |
| 1211 | #ifdef WLCACHE |
| 1212 | wl_cache_store(sc, base, &eh, m); |
| 1213 | #endif |
| 1214 | |
| 1215 | /* |
| 1216 | * received packet is now in a chain of mbuf's. next step is |
| 1217 | * to pass the packet upwards. |
| 1218 | * |
| 1219 | */ |
| 1220 | ifp->if_input(ifp, m); |
| 1221 | return 1; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * wlioctl: |
| 1226 | * |
| 1227 | * This routine processes an ioctl request from the "if" layer |
| 1228 | * above. |
| 1229 | * |
| 1230 | * input : pointer the appropriate "if" struct, command and data |
| 1231 | * output : based on command appropriate action is taken on the |
| 1232 | * WaveLAN board(s) or related structures |
| 1233 | * return : error is returned containing exit conditions |
| 1234 | * |
| 1235 | */ |
| 1236 | static int |
| 1237 | wlioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cred) |
| 1238 | { |
| 1239 | struct ifreq *ifr = (struct ifreq *)data; |
| 1240 | struct wl_softc *sc = ifp->if_softc; |
| 1241 | short base = sc->base; |
| 1242 | short mode = 0; |
| 1243 | int error = 0; |
| 1244 | int irq, irqval, i, isroot, size; |
| 1245 | caddr_t up; |
| 1246 | char * cpt; |
| 1247 | struct thread *td = curthread; /* XXX */ |
| 1248 | |
| 1249 | |
| 1250 | #ifdef WLDEBUG |
| 1251 | if (ifp->if_flags & IFF_DEBUG) |
| 1252 | if_printf(ifp, "entered wlioctl()\n"); |
| 1253 | #endif |
| 1254 | switch (cmd) { |
| 1255 | case SIOCSIFFLAGS: |
| 1256 | if (ifp->if_flags & IFF_ALLMULTI) { |
| 1257 | mode |= MOD_ENAL; |
| 1258 | } |
| 1259 | if (ifp->if_flags & IFF_PROMISC) { |
| 1260 | mode |= MOD_PROM; |
| 1261 | } |
| 1262 | if(ifp->if_flags & IFF_LINK0) { |
| 1263 | mode |= MOD_PROM; |
| 1264 | } |
| 1265 | /* |
| 1266 | * force a complete reset if the recieve multicast/ |
| 1267 | * promiscuous mode changes so that these take |
| 1268 | * effect immediately. |
| 1269 | * |
| 1270 | */ |
| 1271 | if (sc->mode != mode) { |
| 1272 | sc->mode = mode; |
| 1273 | if (sc->flags & DSF_RUNNING) { |
| 1274 | sc->flags &= ~DSF_RUNNING; |
| 1275 | wlinit(sc); |
| 1276 | } |
| 1277 | } |
| 1278 | /* if interface is marked DOWN and still running then |
| 1279 | * stop it. |
| 1280 | */ |
| 1281 | if ((ifp->if_flags & IFF_UP) == 0 && sc->flags & DSF_RUNNING) { |
| 1282 | if_printf(ifp, "ioctl(): board is not running\n"); |
| 1283 | sc->flags &= ~DSF_RUNNING; |
| 1284 | sc->hacr &= ~HACR_INTRON; |
| 1285 | CMD(sc); /* turn off interrupts */ |
| 1286 | } |
| 1287 | /* else if interface is UP and RUNNING, start it |
| 1288 | */ |
| 1289 | else if (ifp->if_flags & IFF_UP && (sc->flags & DSF_RUNNING) == 0) { |
| 1290 | wlinit(sc); |
| 1291 | } |
| 1292 | |
| 1293 | /* if WLDEBUG set on interface, then printf rf-modem regs |
| 1294 | */ |
| 1295 | if(ifp->if_flags & IFF_DEBUG) |
| 1296 | wlmmcstat(sc); |
| 1297 | break; |
| 1298 | #if MULTICAST |
| 1299 | case SIOCADDMULTI: |
| 1300 | case SIOCDELMULTI: |
| 1301 | |
| 1302 | #if defined(__FreeBSD__) && __FreeBSD_version < 300000 |
| 1303 | if (cmd == SIOCADDMULTI) { |
| 1304 | error = ether_addmulti(ifr, &sc->wl_ac); |
| 1305 | } |
| 1306 | else { |
| 1307 | error = ether_delmulti(ifr, &sc->wl_ac); |
| 1308 | } |
| 1309 | |
| 1310 | /* see if we should be in all multicast mode |
| 1311 | * note that 82586 cannot do that, must simulate with |
| 1312 | * promiscuous mode |
| 1313 | */ |
| 1314 | if (check_allmulti(sc)) { |
| 1315 | ifp->if_flags |= IFF_ALLMULTI; |
| 1316 | sc->mode |= MOD_ENAL; |
| 1317 | sc->flags &= ~DSF_RUNNING; |
| 1318 | wlinit(sc); |
| 1319 | error = 0; |
| 1320 | break; |
| 1321 | } |
| 1322 | |
| 1323 | if (error == ENETRESET) { |
| 1324 | if(sc->flags & DSF_RUNNING) { |
| 1325 | sc->flags &= ~DSF_RUNNING; |
| 1326 | wlinit(sc); |
| 1327 | } |
| 1328 | error = 0; |
| 1329 | } |
| 1330 | #else |
| 1331 | wlinit(sc); |
| 1332 | #endif |
| 1333 | break; |
| 1334 | #endif /* MULTICAST */ |
| 1335 | |
| 1336 | /* DEVICE SPECIFIC */ |
| 1337 | |
| 1338 | |
| 1339 | /* copy the PSA out to the caller */ |
| 1340 | case SIOCGWLPSA: |
| 1341 | /* pointer to buffer in user space */ |
| 1342 | up = (void *)ifr->ifr_data; |
| 1343 | /* work out if they're root */ |
| 1344 | isroot = (suser(td) == 0); |
| 1345 | |
| 1346 | for (i = 0; i < 0x40; i++) { |
| 1347 | /* don't hand the DES key out to non-root users */ |
| 1348 | if ((i > WLPSA_DESKEY) && (i < (WLPSA_DESKEY + 8)) && !isroot) |
| 1349 | continue; |
| 1350 | if (subyte((up + i), sc->psa[i])) |
| 1351 | return(EFAULT); |
| 1352 | } |
| 1353 | break; |
| 1354 | |
| 1355 | |
| 1356 | /* copy the PSA in from the caller; we only copy _some_ values */ |
| 1357 | case SIOCSWLPSA: |
| 1358 | /* root only */ |
| 1359 | if ((error = suser(td))) |
| 1360 | break; |
| 1361 | error = EINVAL; /* assume the worst */ |
| 1362 | /* pointer to buffer in user space containing data */ |
| 1363 | up = (void *)ifr->ifr_data; |
| 1364 | |
| 1365 | /* check validity of input range */ |
| 1366 | for (i = 0; i < 0x40; i++) |
| 1367 | if (fubyte(up + i) < 0) |
| 1368 | return(EFAULT); |
| 1369 | |
| 1370 | /* check IRQ value */ |
| 1371 | irqval = fubyte(up+WLPSA_IRQNO); |
| 1372 | for (irq = 15; irq >= 0; irq--) |
| 1373 | if(irqvals[irq] == irqval) |
| 1374 | break; |
| 1375 | if (irq == 0) /* oops */ |
| 1376 | break; |
| 1377 | /* new IRQ */ |
| 1378 | sc->psa[WLPSA_IRQNO] = irqval; |
| 1379 | |
| 1380 | /* local MAC */ |
| 1381 | for (i = 0; i < 6; i++) |
| 1382 | sc->psa[WLPSA_LOCALMAC+i] = fubyte(up+WLPSA_LOCALMAC+i); |
| 1383 | |
| 1384 | /* MAC select */ |
| 1385 | sc->psa[WLPSA_MACSEL] = fubyte(up+WLPSA_MACSEL); |
| 1386 | |
| 1387 | /* default nwid */ |
| 1388 | sc->psa[WLPSA_NWID] = fubyte(up+WLPSA_NWID); |
| 1389 | sc->psa[WLPSA_NWID+1] = fubyte(up+WLPSA_NWID+1); |
| 1390 | |
| 1391 | error = 0; |
| 1392 | wlsetpsa(sc); /* update the PSA */ |
| 1393 | break; |
| 1394 | |
| 1395 | |
| 1396 | /* get the current NWID out of the sc since we stored it there */ |
| 1397 | case SIOCGWLCNWID: |
| 1398 | ifr->ifr_data = (caddr_t) (sc->nwid[0] << 8 | sc->nwid[1]); |
| 1399 | break; |
| 1400 | |
| 1401 | |
| 1402 | /* |
| 1403 | * change the nwid dynamically. This |
| 1404 | * ONLY changes the radio modem and does not |
| 1405 | * change the PSA. |
| 1406 | * |
| 1407 | * 2 steps: |
| 1408 | * 1. save in softc "soft registers" |
| 1409 | * 2. save in radio modem (MMC) |
| 1410 | */ |
| 1411 | case SIOCSWLCNWID: |
| 1412 | /* root only */ |
| 1413 | if ((error = suser(td))) |
| 1414 | break; |
| 1415 | if (!(ifp->if_flags & IFF_UP)) { |
| 1416 | error = EIO; /* only allowed while up */ |
| 1417 | } else { |
| 1418 | /* |
| 1419 | * soft c nwid shadows radio modem setting |
| 1420 | */ |
| 1421 | sc->nwid[0] = (int)ifr->ifr_data >> 8; |
| 1422 | sc->nwid[1] = (int)ifr->ifr_data & 0xff; |
| 1423 | MMC_WRITE(MMC_NETW_ID_L,sc->nwid[1]); |
| 1424 | MMC_WRITE(MMC_NETW_ID_H,sc->nwid[0]); |
| 1425 | } |
| 1426 | break; |
| 1427 | |
| 1428 | /* copy the EEPROM in 2.4 Gz WaveMODEM out to the caller */ |
| 1429 | case SIOCGWLEEPROM: |
| 1430 | /* root only */ |
| 1431 | if ((error = suser(td))) |
| 1432 | break; |
| 1433 | /* pointer to buffer in user space */ |
| 1434 | up = (void *)ifr->ifr_data; |
| 1435 | |
| 1436 | for (i=0x00; i<0x80; ++i) { /* 2.4 Gz: size of EEPROM */ |
| 1437 | MMC_WRITE(MMC_EEADDR,i); /* 2.4 Gz: get frequency */ |
| 1438 | MMC_WRITE(MMC_EECTRL, /* 2.4 Gz: EEPROM read */ |
| 1439 | MMC_EECTRL_EEOP_READ); /* 2.4 Gz: */ |
| 1440 | DELAY(40); /* 2.4 Gz */ |
| 1441 | if (subyte(up + 2*i , /* 2.4 Gz: pass low byte of */ |
| 1442 | wlmmcread(base,MMC_EEDATALrv)) /* 2.4 Gz: EEPROM word */ |
| 1443 | ) return(EFAULT); /* 2.4 Gz: */ |
| 1444 | if (subyte(up + 2*i+1, /* 2.4 Gz: pass hi byte of */ |
| 1445 | wlmmcread(base,MMC_EEDATALrv)) /* 2.4 Gz: EEPROM word */ |
| 1446 | ) return(EFAULT); /* 2.4 Gz: */ |
| 1447 | } |
| 1448 | break; |
| 1449 | |
| 1450 | #ifdef WLCACHE |
| 1451 | /* zero (Delete) the wl cache */ |
| 1452 | case SIOCDWLCACHE: |
| 1453 | /* root only */ |
| 1454 | if ((error = suser(td))) |
| 1455 | break; |
| 1456 | wl_cache_zero(sc); |
| 1457 | break; |
| 1458 | |
| 1459 | /* read out the number of used cache elements */ |
| 1460 | case SIOCGWLCITEM: |
| 1461 | ifr->ifr_data = (caddr_t) sc->w_sigitems; |
| 1462 | break; |
| 1463 | |
| 1464 | /* read out the wl cache */ |
| 1465 | case SIOCGWLCACHE: |
| 1466 | /* pointer to buffer in user space */ |
| 1467 | up = (void *)ifr->ifr_data; |
| 1468 | cpt = (char *) &sc->w_sigcache[0]; |
| 1469 | size = sc->w_sigitems * sizeof(struct w_sigcache); |
| 1470 | |
| 1471 | for (i = 0; i < size; i++) { |
| 1472 | if (subyte((up + i), *cpt++)) |
| 1473 | return(EFAULT); |
| 1474 | } |
| 1475 | break; |
| 1476 | #endif |
| 1477 | |
| 1478 | default: |
| 1479 | error = ether_ioctl(ifp, cmd, data); |
| 1480 | break; |
| 1481 | } |
| 1482 | return (error); |
| 1483 | } |
| 1484 | |
| 1485 | /* |
| 1486 | * wlwatchdog(): |
| 1487 | * |
| 1488 | * Called if the timer set in wlstart expires before an interrupt is received |
| 1489 | * from the wavelan. It seems to lose interrupts sometimes. |
| 1490 | * The watchdog routine gets called if the transmitter failed to interrupt |
| 1491 | * |
| 1492 | * input : which board is timing out |
| 1493 | * output : board reset |
| 1494 | * |
| 1495 | */ |
| 1496 | static void |
| 1497 | wlwatchdog(void *vsc) |
| 1498 | { |
| 1499 | struct wl_softc *sc = vsc; |
| 1500 | struct ifnet *ifp = &sc->wl_if; |
| 1501 | |
| 1502 | lwkt_serialize_enter(ifp->if_serializer); |
| 1503 | log(LOG_ERR, "%s: wavelan device timeout on xmit\n", sc->wl_if.if_xname); |
| 1504 | sc->wl_if.if_oerrors++; |
| 1505 | wlinit(sc); |
| 1506 | lwkt_serialize_exit(ifp->if_serializer); |
| 1507 | } |
| 1508 | |
| 1509 | /* |
| 1510 | * wlintr: |
| 1511 | * |
| 1512 | * This function is the interrupt handler for the WaveLAN |
| 1513 | * board. This routine will be called whenever either a packet |
| 1514 | * is received, or a packet has successfully been transfered and |
| 1515 | * the unit is ready to transmit another packet. |
| 1516 | * |
| 1517 | * input : softc pointer for this interface |
| 1518 | * output : either a packet is received, or a packet is transfered |
| 1519 | * |
| 1520 | */ |
| 1521 | static void |
| 1522 | wlintr(void *arg) |
| 1523 | { |
| 1524 | struct wl_softc *sc = arg; |
| 1525 | struct ifnet *ifp = &sc->wl_if; |
| 1526 | short base = sc->base; |
| 1527 | int ac_status; |
| 1528 | u_short int_type, int_type1; |
| 1529 | |
| 1530 | #ifdef WLDEBUG |
| 1531 | if (ifp->if_flags & IFF_DEBUG) |
| 1532 | if_printf(ifp, "wlintr() called\n"); |
| 1533 | #endif |
| 1534 | |
| 1535 | if((int_type = inw(HASR(base))) & HASR_MMC_INTR) { |
| 1536 | /* handle interrupt from the modem management controler */ |
| 1537 | /* This will clear the interrupt condition */ |
| 1538 | (void) wlmmcread(base,MMC_DCE_STATUS); /* ignored for now */ |
| 1539 | } |
| 1540 | |
| 1541 | if(!(int_type & HASR_INTR)){ /* return if no interrupt from 82586 */ |
| 1542 | /* commented out. jrb. it happens when reinit occurs |
| 1543 | if_printf(ifp, "%s: int_type %x, dump follows\n", |
| 1544 | __func__, int_type); |
| 1545 | wldump(sc); |
| 1546 | */ |
| 1547 | return; |
| 1548 | } |
| 1549 | |
| 1550 | if (gathersnr) |
| 1551 | getsnr(sc); |
| 1552 | for(;;) { |
| 1553 | outw(PIOR0(base), OFFSET_SCB + 0); /* get scb status */ |
| 1554 | int_type = (inw(PIOP0(base)) & SCB_SW_INT); |
| 1555 | if (int_type == 0) /* no interrupts left */ |
| 1556 | break; |
| 1557 | |
| 1558 | int_type1 = wlack(sc); /* acknowledge interrupt(s) */ |
| 1559 | /* make sure no bits disappeared (others may appear) */ |
| 1560 | if ((int_type & int_type1) != int_type) { |
| 1561 | if_printf(ifp, "wlack() int bits disappeared: " |
| 1562 | "%04x != int_type %04x\n", int_type1, int_type); |
| 1563 | } |
| 1564 | int_type = int_type1; /* go with the new status */ |
| 1565 | /* |
| 1566 | * incoming packet |
| 1567 | */ |
| 1568 | if (int_type & SCB_SW_FR) { |
| 1569 | ifp->if_ipackets++; |
| 1570 | wlrcv(sc); |
| 1571 | } |
| 1572 | /* |
| 1573 | * receiver not ready |
| 1574 | */ |
| 1575 | if (int_type & SCB_SW_RNR) { |
| 1576 | ifp->if_ierrors++; |
| 1577 | #ifdef WLDEBUG |
| 1578 | if (ifp->if_flags & IFF_DEBUG) { |
| 1579 | if_printf(ifp, "intr(): receiver overrun! begin_fd = %x\n", |
| 1580 | sc->begin_fd); |
| 1581 | } |
| 1582 | #endif |
| 1583 | wlrustrt(sc); |
| 1584 | } |
| 1585 | /* |
| 1586 | * CU not ready |
| 1587 | */ |
| 1588 | if (int_type & SCB_SW_CNA) { |
| 1589 | /* |
| 1590 | * At present, we don't care about CNA's. We |
| 1591 | * believe they are a side effect of XMT. |
| 1592 | */ |
| 1593 | } |
| 1594 | if (int_type & SCB_SW_CX) { |
| 1595 | /* |
| 1596 | * At present, we only request Interrupt for |
| 1597 | * XMT. |
| 1598 | */ |
| 1599 | outw(PIOR1(base), OFFSET_CU); /* get command status */ |
| 1600 | ac_status = inw(PIOP1(base)); |
| 1601 | |
| 1602 | if (xmt_watch) { /* report some anomalies */ |
| 1603 | |
| 1604 | if (sc->tbusy == 0) { |
| 1605 | if_printf(ifp, "xmt intr but not busy, CU %04x\n", |
| 1606 | ac_status); |
| 1607 | } |
| 1608 | if (ac_status == 0) { |
| 1609 | if_printf(ifp, "xmt intr but ac_status == 0\n"); |
| 1610 | } |
| 1611 | if (ac_status & AC_SW_A) { |
| 1612 | if_printf(ifp, "xmt aborted\n"); |
| 1613 | } |
| 1614 | #ifdef notdef |
| 1615 | if (ac_status & TC_CARRIER) { |
| 1616 | if_printf(ifp, "no carrier\n"); |
| 1617 | } |
| 1618 | #endif /* notdef */ |
| 1619 | if (ac_status & TC_CLS) { |
| 1620 | if_printf(ifp, "no CTS\n"); |
| 1621 | } |
| 1622 | if (ac_status & TC_DMA) { |
| 1623 | if_printf(ifp, "DMA underrun\n"); |
| 1624 | } |
| 1625 | if (ac_status & TC_DEFER) { |
| 1626 | if_printf(ifp, "xmt deferred\n"); |
| 1627 | } |
| 1628 | if (ac_status & TC_SQE) { |
| 1629 | if_printf(ifp, "heart beat\n"); |
| 1630 | } |
| 1631 | if (ac_status & TC_COLLISION) { |
| 1632 | if_printf(ifp, "too many collisions\n"); |
| 1633 | } |
| 1634 | } |
| 1635 | /* if the transmit actually failed, or returned some status */ |
| 1636 | if ((!(ac_status & AC_SW_OK)) || (ac_status & 0xfff)) { |
| 1637 | if (ac_status & (TC_COLLISION | TC_CLS | TC_DMA)) { |
| 1638 | ifp->if_oerrors++; |
| 1639 | } |
| 1640 | |
| 1641 | /* count collisions */ |
| 1642 | ifp->if_collisions += (ac_status & 0xf); |
| 1643 | /* if TC_COLLISION set and collision count zero, 16 collisions */ |
| 1644 | if ((ac_status & 0x20) == 0x20) { |
| 1645 | ifp->if_collisions += 0x10; |
| 1646 | } |
| 1647 | } |
| 1648 | sc->tbusy = 0; |
| 1649 | callout_stop(&sc->watchdog_ch); |
| 1650 | ifp->if_flags &= ~IFF_OACTIVE; |
| 1651 | wlstart(ifp); |
| 1652 | } |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | /* |
| 1657 | * wlrcv: |
| 1658 | * |
| 1659 | * This routine is called by the interrupt handler to initiate a |
| 1660 | * packet transfer from the board to the "if" layer above this |
| 1661 | * driver. This routine checks if a buffer has been successfully |
| 1662 | * received by the WaveLAN. If so, the routine wlread is called |
| 1663 | * to do the actual transfer of the board data (including the |
| 1664 | * ethernet header) into a packet (consisting of an mbuf chain). |
| 1665 | * |
| 1666 | * input : softc pointer for this interface |
| 1667 | * output : if a packet is available, it is "sent up" |
| 1668 | * |
| 1669 | */ |
| 1670 | static void |
| 1671 | wlrcv(struct wl_softc *sc) |
| 1672 | { |
| 1673 | short base = sc->base; |
| 1674 | u_short fd_p, status, offset, link_offset; |
| 1675 | |
| 1676 | #ifdef WLDEBUG |
| 1677 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 1678 | if_printf(&sc->wl_if, "entered wlrcv()\n"); |
| 1679 | #endif |
| 1680 | for (fd_p = sc->begin_fd; fd_p != I82586NULL; fd_p = sc->begin_fd) { |
| 1681 | |
| 1682 | outw(PIOR0(base), fd_p + 0); /* address of status */ |
| 1683 | status = inw(PIOP0(base)); |
| 1684 | outw(PIOR1(base), fd_p + 4); /* address of link_offset */ |
| 1685 | link_offset = inw(PIOP1(base)); |
| 1686 | offset = inw(PIOP1(base)); /* rbd_offset */ |
| 1687 | if (status == 0xffff || offset == 0xffff /*I82586NULL*/) { |
| 1688 | if (wlhwrst(sc) != TRUE) |
| 1689 | if_printf(&sc->wl_if, "rcv(): hwrst ffff trouble.\n"); |
| 1690 | return; |
| 1691 | } else if (status & AC_SW_C) { |
| 1692 | if (status == (RFD_DONE|RFD_RSC)) { |
| 1693 | /* lost one */ |
| 1694 | #ifdef WLDEBUG |
| 1695 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 1696 | if_printf(&sc->wl_if, "RCV: RSC %x\n", status); |
| 1697 | #endif |
| 1698 | sc->wl_if.if_ierrors++; |
| 1699 | } else if (!(status & RFD_OK)) { |
| 1700 | if_printf(&sc->wl_if, "RCV: !OK %x\n", status); |
| 1701 | sc->wl_if.if_ierrors++; |
| 1702 | } else if (status & 0xfff) { /* can't happen */ |
| 1703 | if_printf(&sc->wl_if, "RCV: ERRs %x\n", status); |
| 1704 | sc->wl_if.if_ierrors++; |
| 1705 | } else if (!wlread(sc, fd_p)) |
| 1706 | return; |
| 1707 | |
| 1708 | if (!wlrequeue(sc, fd_p)) { |
| 1709 | /* abort on chain error */ |
| 1710 | if (wlhwrst(sc) != TRUE) |
| 1711 | if_printf(&sc->wl_if, "rcv(): hwrst trouble.\n"); |
| 1712 | return; |
| 1713 | } |
| 1714 | sc->begin_fd = link_offset; |
| 1715 | } else { |
| 1716 | break; |
| 1717 | } |
| 1718 | } |
| 1719 | } |
| 1720 | |
| 1721 | /* |
| 1722 | * wlrequeue: |
| 1723 | * |
| 1724 | * This routine puts rbd's used in the last receive back onto the |
| 1725 | * free list for the next receive. |
| 1726 | * |
| 1727 | */ |
| 1728 | static int |
| 1729 | wlrequeue(struct wl_softc *sc, u_short fd_p) |
| 1730 | { |
| 1731 | short base = sc->base; |
| 1732 | fd_t fd; |
| 1733 | u_short l_rbdp, f_rbdp, rbd_offset; |
| 1734 | |
| 1735 | outw(PIOR0(base), fd_p + 6); |
| 1736 | rbd_offset = inw(PIOP0(base)); |
| 1737 | if ((f_rbdp = rbd_offset) != I82586NULL) { |
| 1738 | l_rbdp = f_rbdp; |
| 1739 | for(;;) { |
| 1740 | outw(PIOR0(base), l_rbdp + 0); /* address of status */ |
| 1741 | if(inw(PIOP0(base)) & RBD_SW_EOF) |
| 1742 | break; |
| 1743 | outw(PIOP0(base), 0); |
| 1744 | outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */ |
| 1745 | if((l_rbdp = inw(PIOP0(base))) == I82586NULL) |
| 1746 | break; |
| 1747 | } |
| 1748 | outw(PIOP0(base), 0); |
| 1749 | outw(PIOR0(base), l_rbdp + 2); /* next_rbd_offset */ |
| 1750 | outw(PIOP0(base), I82586NULL); |
| 1751 | outw(PIOR0(base), l_rbdp + 8); /* address of size */ |
| 1752 | outw(PIOP0(base), inw(PIOP0(base)) | AC_CW_EL); |
| 1753 | outw(PIOR0(base), sc->end_rbd + 2); |
| 1754 | outw(PIOP0(base), f_rbdp); /* end_rbd->next_rbd_offset */ |
| 1755 | outw(PIOR0(base), sc->end_rbd + 8); /* size */ |
| 1756 | outw(PIOP0(base), inw(PIOP0(base)) & ~AC_CW_EL); |
| 1757 | sc->end_rbd = l_rbdp; |
| 1758 | } |
| 1759 | |
| 1760 | fd.status = 0; |
| 1761 | fd.command = AC_CW_EL; |
| 1762 | fd.link_offset = I82586NULL; |
| 1763 | fd.rbd_offset = I82586NULL; |
| 1764 | outw(PIOR1(base), fd_p); |
| 1765 | outsw(PIOP1(base), &fd, 8/2); |
| 1766 | |
| 1767 | outw(PIOR1(base), sc->end_fd + 2); /* addr of command */ |
| 1768 | outw(PIOP1(base), 0); /* command = 0 */ |
| 1769 | outw(PIOP1(base), fd_p); /* end_fd->link_offset = fd_p */ |
| 1770 | sc->end_fd = fd_p; |
| 1771 | |
| 1772 | return 1; |
| 1773 | } |
| 1774 | |
| 1775 | #ifdef WLDEBUG |
| 1776 | static int xmt_debug = 0; |
| 1777 | #endif /* WLDEBUG */ |
| 1778 | |
| 1779 | /* |
| 1780 | * wlxmt: |
| 1781 | * |
| 1782 | * This routine fills in the appropriate registers and memory |
| 1783 | * locations on the WaveLAN board and starts the board off on |
| 1784 | * the transmit. |
| 1785 | * |
| 1786 | * input : softc pointer for this interface, and a pointer to the mbuf |
| 1787 | * output : board memory and registers are set for xfer and attention |
| 1788 | * |
| 1789 | */ |
| 1790 | static void |
| 1791 | wlxmt(struct wl_softc *sc, struct mbuf *m) |
| 1792 | { |
| 1793 | u_short xmtdata_p = OFFSET_TBUF; |
| 1794 | u_short xmtshort_p; |
| 1795 | struct mbuf *tm_p = m; |
| 1796 | struct ether_header *eh_p = mtod(m, struct ether_header *); |
| 1797 | u_char *mb_p = mtod(m, u_char *) + sizeof(struct ether_header); |
| 1798 | u_short count = m->m_len - sizeof(struct ether_header); |
| 1799 | ac_t cb; |
| 1800 | u_short tbd_p = OFFSET_TBD; |
| 1801 | u_short len, clen = 0; |
| 1802 | short base = sc->base; |
| 1803 | int spin; |
| 1804 | |
| 1805 | #ifdef WLDEBUG |
| 1806 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 1807 | if_printf(&sc->wl_if, "entered wlxmt()\n"); |
| 1808 | #endif |
| 1809 | |
| 1810 | cb.ac_status = 0; |
| 1811 | cb.ac_command = (AC_CW_EL|AC_TRANSMIT|AC_CW_I); |
| 1812 | cb.ac_link_offset = I82586NULL; |
| 1813 | outw(PIOR1(base), OFFSET_CU); |
| 1814 | outsw(PIOP1(base), &cb, 6/2); |
| 1815 | outw(PIOP1(base), OFFSET_TBD); /* cb.cmd.transmit.tbd_offset */ |
| 1816 | outsw(PIOP1(base), eh_p->ether_dhost, WAVELAN_ADDR_SIZE/2); |
| 1817 | outw(PIOP1(base), eh_p->ether_type); |
| 1818 | |
| 1819 | #ifdef WLDEBUG |
| 1820 | if (sc->wl_if.if_flags & IFF_DEBUG) { |
| 1821 | if (xmt_debug) { |
| 1822 | if_printf(&sc->wl_if, "XMT mbuf: L%d @%p ", count, (void *)mb_p); |
| 1823 | printf("ether type %x\n", eh_p->ether_type); |
| 1824 | } |
| 1825 | } |
| 1826 | #endif /* WLDEBUG */ |
| 1827 | outw(PIOR0(base), OFFSET_TBD); |
| 1828 | outw(PIOP0(base), 0); /* act_count */ |
| 1829 | outw(PIOR1(base), OFFSET_TBD + 4); |
| 1830 | outw(PIOP1(base), xmtdata_p); /* buffer_addr */ |
| 1831 | outw(PIOP1(base), 0); /* buffer_base */ |
| 1832 | for (;;) { |
| 1833 | if (count) { |
| 1834 | if (clen + count > WAVELAN_MTU) |
| 1835 | break; |
| 1836 | if (count & 1) |
| 1837 | len = count + 1; |
| 1838 | else |
| 1839 | len = count; |
| 1840 | outw(PIOR1(base), xmtdata_p); |
| 1841 | outsw(PIOP1(base), mb_p, len/2); |
| 1842 | clen += count; |
| 1843 | outw(PIOR0(base), tbd_p); /* address of act_count */ |
| 1844 | outw(PIOP0(base), inw(PIOP0(base)) + count); |
| 1845 | xmtdata_p += len; |
| 1846 | if ((tm_p = tm_p->m_next) == (struct mbuf *)0) |
| 1847 | break; |
| 1848 | if (count & 1) { |
| 1849 | /* go to the next descriptor */ |
| 1850 | outw(PIOR0(base), tbd_p + 2); |
| 1851 | tbd_p += sizeof (tbd_t); |
| 1852 | outw(PIOP0(base), tbd_p); /* next_tbd_offset */ |
| 1853 | outw(PIOR0(base), tbd_p); |
| 1854 | outw(PIOP0(base), 0); /* act_count */ |
| 1855 | outw(PIOR1(base), tbd_p + 4); |
| 1856 | outw(PIOP1(base), xmtdata_p); /* buffer_addr */ |
| 1857 | outw(PIOP1(base), 0); /* buffer_base */ |
| 1858 | /* at the end -> coallesce remaining mbufs */ |
| 1859 | if (tbd_p == OFFSET_TBD + (N_TBD-1) * sizeof (tbd_t)) { |
| 1860 | wlsftwsleaze(&count, &mb_p, &tm_p); |
| 1861 | continue; |
| 1862 | } |
| 1863 | /* next mbuf short -> coallesce as needed */ |
| 1864 | if ( (tm_p->m_next == (struct mbuf *) 0) || |
| 1865 | #define HDW_THRESHOLD 55 |
| 1866 | tm_p->m_len > HDW_THRESHOLD) |
| 1867 | /* ok */; |
| 1868 | else { |
| 1869 | wlhdwsleaze(&count, &mb_p, &tm_p); |
| 1870 | continue; |
| 1871 | } |
| 1872 | } |
| 1873 | } else if ((tm_p = tm_p->m_next) == (struct mbuf *)0) |
| 1874 | break; |
| 1875 | count = tm_p->m_len; |
| 1876 | mb_p = mtod(tm_p, u_char *); |
| 1877 | #ifdef WLDEBUG |
| 1878 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 1879 | if (xmt_debug) |
| 1880 | if_printf(&sc->wl_if, "mbuf+ L%d @%p ", count, (void *)mb_p); |
| 1881 | #endif /* WLDEBUG */ |
| 1882 | } |
| 1883 | #ifdef WLDEBUG |
| 1884 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 1885 | if (xmt_debug) |
| 1886 | if_printf(&sc->wl_if, "CLEN = %d\n", clen); |
| 1887 | #endif /* WLDEBUG */ |
| 1888 | outw(PIOR0(base), tbd_p); |
| 1889 | if (clen < ETHERMIN) { |
| 1890 | outw(PIOP0(base), inw(PIOP0(base)) + ETHERMIN - clen); |
| 1891 | outw(PIOR1(base), xmtdata_p); |
| 1892 | for (xmtshort_p = xmtdata_p; clen < ETHERMIN; clen += 2) |
| 1893 | outw(PIOP1(base), 0); |
| 1894 | } |
| 1895 | outw(PIOP0(base), inw(PIOP0(base)) | TBD_SW_EOF); |
| 1896 | outw(PIOR0(base), tbd_p + 2); |
| 1897 | outw(PIOP0(base), I82586NULL); |
| 1898 | #ifdef WLDEBUG |
| 1899 | if (sc->wl_if.if_flags & IFF_DEBUG) { |
| 1900 | if (xmt_debug) { |
| 1901 | wltbd(sc); |
| 1902 | printf("\n"); |
| 1903 | } |
| 1904 | } |
| 1905 | #endif /* WLDEBUG */ |
| 1906 | |
| 1907 | outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */ |
| 1908 | /* |
| 1909 | * wait for 586 to clear previous command, complain if it takes |
| 1910 | * too long |
| 1911 | */ |
| 1912 | for (spin = 1;;spin = (spin + 1) % 10000) { |
| 1913 | if (inw(PIOP0(base)) == 0) { /* it's done, we can go */ |
| 1914 | break; |
| 1915 | } |
| 1916 | if ((spin == 0) && xmt_watch) { /* not waking up, and we care */ |
| 1917 | if_printf(&sc->wl_if, "slow accepting xmit\n"); |
| 1918 | } |
| 1919 | } |
| 1920 | outw(PIOP0(base), SCB_CU_STRT); /* new command */ |
| 1921 | SET_CHAN_ATTN(sc); |
| 1922 | |
| 1923 | m_freem(m); |
| 1924 | |
| 1925 | /* XXX |
| 1926 | * Pause to avoid transmit overrun problems. |
| 1927 | * The required delay tends to vary with platform type, and may be |
| 1928 | * related to interrupt loss. |
| 1929 | */ |
| 1930 | if (wl_xmit_delay) { |
| 1931 | DELAY(wl_xmit_delay); |
| 1932 | } |
| 1933 | } |
| 1934 | |
| 1935 | /* |
| 1936 | * wlbldru: |
| 1937 | * |
| 1938 | * This function builds the linear linked lists of fd's and |
| 1939 | * rbd's. Based on page 4-32 of 1986 Intel microcom handbook. |
| 1940 | * |
| 1941 | */ |
| 1942 | static u_short |
| 1943 | wlbldru(struct wl_softc *sc) |
| 1944 | { |
| 1945 | short base = sc->base; |
| 1946 | fd_t fd; |
| 1947 | rbd_t rbd; |
| 1948 | u_short fd_p = OFFSET_RU; |
| 1949 | u_short rbd_p = OFFSET_RBD; |
| 1950 | int i; |
| 1951 | |
| 1952 | sc->begin_fd = fd_p; |
| 1953 | for(i = 0; i < N_FD; i++) { |
| 1954 | fd.status = 0; |
| 1955 | fd.command = 0; |
| 1956 | fd.link_offset = fd_p + sizeof(fd_t); |
| 1957 | fd.rbd_offset = I82586NULL; |
| 1958 | outw(PIOR1(base), fd_p); |
| 1959 | outsw(PIOP1(base), &fd, 8/2); |
| 1960 | fd_p = fd.link_offset; |
| 1961 | } |
| 1962 | fd_p -= sizeof(fd_t); |
| 1963 | sc->end_fd = fd_p; |
| 1964 | outw(PIOR1(base), fd_p + 2); |
| 1965 | outw(PIOP1(base), AC_CW_EL); /* command */ |
| 1966 | outw(PIOP1(base), I82586NULL); /* link_offset */ |
| 1967 | fd_p = OFFSET_RU; |
| 1968 | |
| 1969 | outw(PIOR0(base), fd_p + 6); /* address of rbd_offset */ |
| 1970 | outw(PIOP0(base), rbd_p); |
| 1971 | outw(PIOR1(base), rbd_p); |
| 1972 | for(i = 0; i < N_RBD; i++) { |
| 1973 | rbd.status = 0; |
| 1974 | rbd.buffer_addr = rbd_p + sizeof(rbd_t) + 2; |
| 1975 | rbd.buffer_base = 0; |
| 1976 | rbd.size = RCVBUFSIZE; |
| 1977 | if (i != N_RBD-1) { |
| 1978 | rbd_p += sizeof(ru_t); |
| 1979 | rbd.next_rbd_offset = rbd_p; |
| 1980 | } else { |
| 1981 | rbd.next_rbd_offset = I82586NULL; |
| 1982 | rbd.size |= AC_CW_EL; |
| 1983 | sc->end_rbd = rbd_p; |
| 1984 | } |
| 1985 | outsw(PIOP1(base), &rbd, sizeof(rbd_t)/2); |
| 1986 | outw(PIOR1(base), rbd_p); |
| 1987 | } |
| 1988 | return sc->begin_fd; |
| 1989 | } |
| 1990 | |
| 1991 | /* |
| 1992 | * wlrustrt: |
| 1993 | * |
| 1994 | * This routine starts the receive unit running. First checks if the |
| 1995 | * board is actually ready, then the board is instructed to receive |
| 1996 | * packets again. |
| 1997 | * |
| 1998 | */ |
| 1999 | static void |
| 2000 | wlrustrt(struct wl_softc *sc) |
| 2001 | { |
| 2002 | short base = sc->base; |
| 2003 | u_short rfa; |
| 2004 | |
| 2005 | #ifdef WLDEBUG |
| 2006 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 2007 | if_printf(&sc->wl_if, "entered wlrustrt()\n"); |
| 2008 | #endif |
| 2009 | outw(PIOR0(base), OFFSET_SCB); |
| 2010 | if (inw(PIOP0(base)) & SCB_RUS_READY){ |
| 2011 | if_printf(&sc->wl_if, "wlrustrt: RUS_READY\n"); |
| 2012 | return; |
| 2013 | } |
| 2014 | |
| 2015 | outw(PIOR0(base), OFFSET_SCB + 2); |
| 2016 | outw(PIOP0(base), SCB_RU_STRT); /* command */ |
| 2017 | rfa = wlbldru(sc); |
| 2018 | outw(PIOR0(base), OFFSET_SCB + 6); /* address of scb_rfa_offset */ |
| 2019 | outw(PIOP0(base), rfa); |
| 2020 | |
| 2021 | SET_CHAN_ATTN(sc); |
| 2022 | } |
| 2023 | |
| 2024 | /* |
| 2025 | * wldiag: |
| 2026 | * |
| 2027 | * This routine does a 586 op-code number 7, and obtains the |
| 2028 | * diagnose status for the WaveLAN. |
| 2029 | * |
| 2030 | */ |
| 2031 | static int |
| 2032 | wldiag(struct wl_softc *sc) |
| 2033 | { |
| 2034 | short base = sc->base; |
| 2035 | short status; |
| 2036 | |
| 2037 | #ifdef WLDEBUG |
| 2038 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 2039 | if_printf(&sc->wl_if, "entered wldiag()\n"); |
| 2040 | #endif |
| 2041 | outw(PIOR0(base), OFFSET_SCB); |
| 2042 | status = inw(PIOP0(base)); |
| 2043 | if (status & SCB_SW_INT) { |
| 2044 | /* state is 2000 which seems ok |
| 2045 | if_printf(&sc->wl_if, "diag(): unexpected initial state %\n", |
| 2046 | inw(PIOP0(base))); |
| 2047 | */ |
| 2048 | wlack(sc); |
| 2049 | } |
| 2050 | outw(PIOR1(base), OFFSET_CU); |
| 2051 | outw(PIOP1(base), 0); /* ac_status */ |
| 2052 | outw(PIOP1(base), AC_DIAGNOSE|AC_CW_EL);/* ac_command */ |
| 2053 | if(wlcmd(sc, "diag()") == 0) |
| 2054 | return 0; |
| 2055 | outw(PIOR0(base), OFFSET_CU); |
| 2056 | if (inw(PIOP0(base)) & 0x0800) { |
| 2057 | if_printf(&sc->wl_if, "i82586 Self Test failed!\n"); |
| 2058 | return 0; |
| 2059 | } |
| 2060 | return TRUE; |
| 2061 | } |
| 2062 | |
| 2063 | /* |
| 2064 | * wlconfig: |
| 2065 | * |
| 2066 | * This routine does a standard config of the WaveLAN board. |
| 2067 | * |
| 2068 | */ |
| 2069 | static int |
| 2070 | wlconfig(struct wl_softc *sc) |
| 2071 | { |
| 2072 | configure_t configure; |
| 2073 | short base = sc->base; |
| 2074 | |
| 2075 | #if MULTICAST |
| 2076 | #if defined(__DragonFly__) || (defined(__FreeBSD__) && __FreeBSD_version >= 300000) |
| 2077 | struct ifmultiaddr *ifma; |
| 2078 | u_char *addrp; |
| 2079 | #else |
| 2080 | struct ether_multi *enm; |
| 2081 | struct ether_multistep step; |
| 2082 | #endif |
| 2083 | int cnt = 0; |
| 2084 | #endif /* MULTICAST */ |
| 2085 | |
| 2086 | #ifdef WLDEBUG |
| 2087 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 2088 | if_printf(&sc->wl_if, "entered wlconfig()\n"); |
| 2089 | #endif |
| 2090 | outw(PIOR0(base), OFFSET_SCB); |
| 2091 | if (inw(PIOP0(base)) & SCB_SW_INT) { |
| 2092 | /* |
| 2093 | if_printf(&sc->wl_if, "config(): unexpected initial state %x\n", |
| 2094 | inw(PIOP0(base))); |
| 2095 | */ |
| 2096 | } |
| 2097 | wlack(sc); |
| 2098 | |
| 2099 | outw(PIOR1(base), OFFSET_CU); |
| 2100 | outw(PIOP1(base), 0); /* ac_status */ |
| 2101 | outw(PIOP1(base), AC_CONFIGURE|AC_CW_EL); /* ac_command */ |
| 2102 | |
| 2103 | /* jrb hack */ |
| 2104 | configure.fifolim_bytecnt = 0x080c; |
| 2105 | configure.addrlen_mode = 0x0600; |
| 2106 | configure.linprio_interframe = 0x2060; |
| 2107 | configure.slot_time = 0xf200; |
| 2108 | configure.hardware = 0x0008; /* tx even w/o CD */ |
| 2109 | configure.min_frame_len = 0x0040; |
| 2110 | #if 0 |
| 2111 | /* This is the configuration block suggested by Marc Meertens |
| 2112 | * <mmeerten@obelix.utrecht.NCR.COM> in an e-mail message to John |
| 2113 | * Ioannidis on 10 Nov 92. |
| 2114 | */ |
| 2115 | configure.fifolim_bytecnt = 0x040c; |
| 2116 | configure.addrlen_mode = 0x0600; |
| 2117 | configure.linprio_interframe = 0x2060; |
| 2118 | configure.slot_time = 0xf000; |
| 2119 | configure.hardware = 0x0008; /* tx even w/o CD */ |
| 2120 | configure.min_frame_len = 0x0040; |
| 2121 | #else |
| 2122 | /* |
| 2123 | * below is the default board configuration from p2-28 from 586 book |
| 2124 | */ |
| 2125 | configure.fifolim_bytecnt = 0x080c; |
| 2126 | configure.addrlen_mode = 0x2600; |
| 2127 | configure.linprio_interframe = 0x7820; /* IFS=120, ACS=2 */ |
| 2128 | configure.slot_time = 0xf00c; /* slottime=12 */ |
| 2129 | configure.hardware = 0x0008; /* tx even w/o CD */ |
| 2130 | configure.min_frame_len = 0x0040; |
| 2131 | #endif |
| 2132 | if(sc->mode & (MOD_PROM | MOD_ENAL)) { |
| 2133 | configure.hardware |= 1; |
| 2134 | } |
| 2135 | outw(PIOR1(base), OFFSET_CU + 6); |
| 2136 | outsw(PIOP1(base), &configure, sizeof(configure_t)/2); |
| 2137 | |
| 2138 | if(wlcmd(sc, "config()-configure") == 0) |
| 2139 | return 0; |
| 2140 | #if MULTICAST |
| 2141 | outw(PIOR1(base), OFFSET_CU); |
| 2142 | outw(PIOP1(base), 0); /* ac_status */ |
| 2143 | outw(PIOP1(base), AC_MCSETUP|AC_CW_EL); /* ac_command */ |
| 2144 | outw(PIOR1(base), OFFSET_CU + 8); |
| 2145 | #if defined(__DragonFly__) || (defined(__FreeBSD__) && __FreeBSD_version >= 300000) |
| 2146 | LIST_FOREACH(ifma, &sc->wl_if.if_multiaddrs, ifma_link) { |
| 2147 | if (ifma->ifma_addr->sa_family != AF_LINK) |
| 2148 | continue; |
| 2149 | |
| 2150 | addrp = LLADDR((struct sockaddr_dl *)ifma->ifma_addr); |
| 2151 | outw(PIOP1(base), addrp[0] + (addrp[1] << 8)); |
| 2152 | outw(PIOP1(base), addrp[2] + (addrp[3] << 8)); |
| 2153 | outw(PIOP1(base), addrp[4] + (addrp[5] << 8)); |
| 2154 | ++cnt; |
| 2155 | } |
| 2156 | #else |
| 2157 | ETHER_FIRST_MULTI(step, &sc->wl_ac, enm); |
| 2158 | while (enm != NULL) { |
| 2159 | unsigned int lo, hi; |
| 2160 | /* break if setting a multicast range, else we would crash */ |
| 2161 | if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { |
| 2162 | break; |
| 2163 | } |
| 2164 | lo = (enm->enm_addrlo[3] << 16) + (enm->enm_addrlo[4] << 8) |
| 2165 | + enm->enm_addrlo[5]; |
| 2166 | hi = (enm->enm_addrhi[3] << 16) + (enm->enm_addrhi[4] << 8) |
| 2167 | + enm->enm_addrhi[5]; |
| 2168 | while(lo <= hi) { |
| 2169 | outw(PIOP1(base),enm->enm_addrlo[0] + |
| 2170 | (enm->enm_addrlo[1] << 8)); |
| 2171 | outw(PIOP1(base),enm->enm_addrlo[2] + |
| 2172 | ((lo >> 8) & 0xff00)); |
| 2173 | outw(PIOP1(base), ((lo >> 8) & 0xff) + |
| 2174 | ((lo << 8) & 0xff00)); |
| 2175 | /* #define MCASTDEBUG */ |
| 2176 | #ifdef MCASTDEBUG |
| 2177 | printf("mcast_addr[%d,%d,%d] %x %x %x %x %x %x\n", lo, hi, cnt, |
| 2178 | enm->enm_addrlo[0], |
| 2179 | enm->enm_addrlo[1], |
| 2180 | enm->enm_addrlo[2], |
| 2181 | enm->enm_addrlo[3], |
| 2182 | enm->enm_addrlo[4], |
| 2183 | enm->enm_addrlo[5]); |
| 2184 | #endif |
| 2185 | ++cnt; |
| 2186 | ++lo; |
| 2187 | } |
| 2188 | ETHER_NEXT_MULTI(step, enm); |
| 2189 | } |
| 2190 | #endif |
| 2191 | outw(PIOR1(base), OFFSET_CU + 6); /* mc-cnt */ |
| 2192 | outw(PIOP1(base), cnt * WAVELAN_ADDR_SIZE); |
| 2193 | if(wlcmd(sc, "config()-mcaddress") == 0) |
| 2194 | return 0; |
| 2195 | #endif /* MULTICAST */ |
| 2196 | |
| 2197 | outw(PIOR1(base), OFFSET_CU); |
| 2198 | outw(PIOP1(base), 0); /* ac_status */ |
| 2199 | outw(PIOP1(base), AC_IASETUP|AC_CW_EL); /* ac_command */ |
| 2200 | outw(PIOR1(base), OFFSET_CU + 6); |
| 2201 | outsw(PIOP1(base), sc->wl_addr, WAVELAN_ADDR_SIZE/2); |
| 2202 | |
| 2203 | if(wlcmd(sc, "config()-address") == 0) |
| 2204 | return(0); |
| 2205 | |
| 2206 | wlinitmmc(sc); |
| 2207 | |
| 2208 | return(1); |
| 2209 | } |
| 2210 | |
| 2211 | /* |
| 2212 | * wlcmd: |
| 2213 | * |
| 2214 | * Set channel attention bit and busy wait until command has |
| 2215 | * completed. Then acknowledge the command completion. |
| 2216 | */ |
| 2217 | static int |
| 2218 | wlcmd(struct wl_softc *sc, const char *str) |
| 2219 | { |
| 2220 | short base = sc->base; |
| 2221 | int i; |
| 2222 | |
| 2223 | outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */ |
| 2224 | outw(PIOP0(base), SCB_CU_STRT); |
| 2225 | |
| 2226 | SET_CHAN_ATTN(sc); |
| 2227 | |
| 2228 | outw(PIOR0(base), OFFSET_CU); |
| 2229 | for(i = 0; i < 0xffff; i++) |
| 2230 | if (inw(PIOP0(base)) & AC_SW_C) |
| 2231 | break; |
| 2232 | if (i == 0xffff || !(inw(PIOP0(base)) & AC_SW_OK)) { |
| 2233 | if_printf(&sc->wl_if, "%s failed; status = %d, inw = %x, outw = %x\n", |
| 2234 | str, inw(PIOP0(base)) & AC_SW_OK, inw(PIOP0(base)), |
| 2235 | inw(PIOR0(base))); |
| 2236 | outw(PIOR0(base), OFFSET_SCB); |
| 2237 | printf("scb_status %x\n", inw(PIOP0(base))); |
| 2238 | outw(PIOR0(base), OFFSET_SCB+2); |
| 2239 | printf("scb_command %x\n", inw(PIOP0(base))); |
| 2240 | outw(PIOR0(base), OFFSET_SCB+4); |
| 2241 | printf("scb_cbl %x\n", inw(PIOP0(base))); |
| 2242 | outw(PIOR0(base), OFFSET_CU+2); |
| 2243 | printf("cu_cmd %x\n", inw(PIOP0(base))); |
| 2244 | return(0); |
| 2245 | } |
| 2246 | |
| 2247 | outw(PIOR0(base), OFFSET_SCB); |
| 2248 | if ((inw(PIOP0(base)) & SCB_SW_INT) && (inw(PIOP0(base)) != SCB_SW_CNA)) { |
| 2249 | /* |
| 2250 | if_printf(&sc->wl_if, "%s: unexpected final state %x\n", |
| 2251 | str, inw(PIOP0(base))); |
| 2252 | */ |
| 2253 | } |
| 2254 | wlack(sc); |
| 2255 | return(TRUE); |
| 2256 | } |
| 2257 | |
| 2258 | /* |
| 2259 | * wlack: if the 82596 wants attention because it has finished |
| 2260 | * sending or receiving a packet, acknowledge its desire and |
| 2261 | * return bits indicating the kind of attention. wlack() returns |
| 2262 | * these bits so that the caller can service exactly the |
| 2263 | * conditions that wlack() acknowledged. |
| 2264 | */ |
| 2265 | static int |
| 2266 | wlack(struct wl_softc *sc) |
| 2267 | { |
| 2268 | int i; |
| 2269 | u_short cmd; |
| 2270 | short base = sc->base; |
| 2271 | |
| 2272 | outw(PIOR1(base), OFFSET_SCB); |
| 2273 | if(!(cmd = (inw(PIOP1(base)) & SCB_SW_INT))) |
| 2274 | return(0); |
| 2275 | #ifdef WLDEBUG |
| 2276 | if (sc->wl_if.if_flags & IFF_DEBUG) |
| 2277 | if_printf(&sc->wl_if, "doing a wlack()\n"); |
| 2278 | #endif |
| 2279 | outw(PIOP1(base), cmd); |
| 2280 | SET_CHAN_ATTN(sc); |
| 2281 | outw(PIOR0(base), OFFSET_SCB + 2); /* address of scb_command */ |
| 2282 | for (i = 1000000; inw(PIOP0(base)) && (i-- > 0); ); |
| 2283 | if (i < 1) |
| 2284 | if_printf(&sc->wl_if, "wlack(): board not accepting command.\n"); |
| 2285 | return(cmd); |
| 2286 | } |
| 2287 | |
| 2288 | static void |
| 2289 | wltbd(struct wl_softc *sc) |
| 2290 | { |
| 2291 | short base = sc->base; |
| 2292 | u_short tbd_p = OFFSET_TBD; |
| 2293 | tbd_t tbd; |
| 2294 | int i = 0; |
| 2295 | int sum = 0; |
| 2296 | |
| 2297 | for (;;) { |
| 2298 | outw(PIOR1(base), tbd_p); |
| 2299 | insw(PIOP1(base), &tbd, sizeof(tbd_t)/2); |
| 2300 | sum += (tbd.act_count & ~TBD_SW_EOF); |
| 2301 | printf("%d: addr %x, count %d (%d), next %x, base %x\n", |
| 2302 | i++, tbd.buffer_addr, |
| 2303 | (tbd.act_count & ~TBD_SW_EOF), sum, |
| 2304 | tbd.next_tbd_offset, tbd.buffer_base); |
| 2305 | if (tbd.act_count & TBD_SW_EOF) |
| 2306 | break; |
| 2307 | tbd_p = tbd.next_tbd_offset; |
| 2308 | } |
| 2309 | } |
| 2310 | |
| 2311 | static void |
| 2312 | wlhdwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp) |
| 2313 | { |
| 2314 | struct mbuf *tm_p = *tm_pp; |
| 2315 | u_char *mb_p = *mb_pp; |
| 2316 | u_short count = 0; |
| 2317 | u_char *cp; |
| 2318 | int len; |
| 2319 | |
| 2320 | /* |
| 2321 | * can we get a run that will be coallesced or |
| 2322 | * that terminates before breaking |
| 2323 | */ |
| 2324 | do { |
| 2325 | count += tm_p->m_len; |
| 2326 | if (tm_p->m_len & 1) |
| 2327 | break; |
| 2328 | } while ((tm_p = tm_p->m_next) != (struct mbuf *)0); |
| 2329 | if ( (tm_p == (struct mbuf *)0) || |
| 2330 | count > HDW_THRESHOLD) { |
| 2331 | *countp = (*tm_pp)->m_len; |
| 2332 | *mb_pp = mtod((*tm_pp), u_char *); |
| 2333 | return; |
| 2334 | } |
| 2335 | |
| 2336 | /* we need to copy */ |
| 2337 | tm_p = *tm_pp; |
| 2338 | mb_p = *mb_pp; |
| 2339 | count = 0; |
| 2340 | cp = (u_char *) t_packet; |
| 2341 | for (;;) { |
| 2342 | bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len); |
| 2343 | count += len; |
| 2344 | if (count > HDW_THRESHOLD) |
| 2345 | break; |
| 2346 | cp += len; |
| 2347 | if (tm_p->m_next == (struct mbuf *)0) |
| 2348 | break; |
| 2349 | tm_p = tm_p->m_next; |
| 2350 | } |
| 2351 | *countp = count; |
| 2352 | *mb_pp = (u_char *) t_packet; |
| 2353 | *tm_pp = tm_p; |
| 2354 | } |
| 2355 | |
| 2356 | static void |
| 2357 | wlsftwsleaze(u_short *countp, u_char **mb_pp, struct mbuf **tm_pp) |
| 2358 | { |
| 2359 | struct mbuf *tm_p = *tm_pp; |
| 2360 | u_short count = 0; |
| 2361 | u_char *cp = (u_char *) t_packet; |
| 2362 | int len; |
| 2363 | |
| 2364 | /* we need to copy */ |
| 2365 | for (;;) { |
| 2366 | bcopy(mtod(tm_p, u_char *), cp, len = tm_p->m_len); |
| 2367 | count += len; |
| 2368 | cp += len; |
| 2369 | if (tm_p->m_next == (struct mbuf *)0) |
| 2370 | break; |
| 2371 | tm_p = tm_p->m_next; |
| 2372 | } |
| 2373 | |
| 2374 | *countp = count; |
| 2375 | *mb_pp = (u_char *) t_packet; |
| 2376 | *tm_pp = tm_p; |
| 2377 | } |
| 2378 | |
| 2379 | static void |
| 2380 | wlmmcstat(struct wl_softc *sc) |
| 2381 | { |
| 2382 | short base = sc->base; |
| 2383 | u_short tmp; |
| 2384 | |
| 2385 | if_printf(&sc->wl_if, "DCE_STATUS: 0x%x, ", |
| 2386 | wlmmcread(base,MMC_DCE_STATUS) & 0x0f); |
| 2387 | tmp = wlmmcread(base,MMC_CORRECT_NWID_H) << 8; |
| 2388 | tmp |= wlmmcread(base,MMC_CORRECT_NWID_L); |
| 2389 | printf("Correct NWID's: %d, ", tmp); |
| 2390 | tmp = wlmmcread(base,MMC_WRONG_NWID_H) << 8; |
| 2391 | tmp |= wlmmcread(base,MMC_WRONG_NWID_L); |
| 2392 | printf("Wrong NWID's: %d\n", tmp); |
| 2393 | printf("THR_PRE_SET: 0x%x, ", wlmmcread(base,MMC_THR_PRE_SET)); |
| 2394 | printf("SIGNAL_LVL: %d, SILENCE_LVL: %d\n", |
| 2395 | wlmmcread(base,MMC_SIGNAL_LVL), |
| 2396 | wlmmcread(base,MMC_SILENCE_LVL)); |
| 2397 | printf("SIGN_QUAL: 0x%x, NETW_ID: %x:%x, DES: %d\n", |
| 2398 | wlmmcread(base,MMC_SIGN_QUAL), |
| 2399 | wlmmcread(base,MMC_NETW_ID_H), |
| 2400 | wlmmcread(base,MMC_NETW_ID_L), |
| 2401 | wlmmcread(base,MMC_DES_AVAIL)); |
| 2402 | } |
| 2403 | |
| 2404 | static u_short |
| 2405 | wlmmcread(u_int base, u_short reg) |
| 2406 | { |
| 2407 | while(inw(HASR(base)) & HASR_MMC_BUSY) ; |
| 2408 | outw(MMCR(base),reg << 1); |
| 2409 | while(inw(HASR(base)) & HASR_MMC_BUSY) ; |
| 2410 | return (u_short)inw(MMCR(base)) >> 8; |
| 2411 | } |
| 2412 | |
| 2413 | static void |
| 2414 | getsnr(struct wl_softc *sc) |
| 2415 | { |
| 2416 | MMC_WRITE(MMC_FREEZE,1); |
| 2417 | /* |
| 2418 | * SNR retrieval procedure : |
| 2419 | * |
| 2420 | * read signal level : wlmmcread(base, MMC_SIGNAL_LVL); |
| 2421 | * read silence level : wlmmcread(base, MMC_SILENCE_LVL); |
| 2422 | */ |
| 2423 | MMC_WRITE(MMC_FREEZE,0); |
| 2424 | /* |
| 2425 | * SNR is signal:silence ratio. |
| 2426 | */ |
| 2427 | } |
| 2428 | |
| 2429 | /* |
| 2430 | ** wlgetpsa |
| 2431 | ** |
| 2432 | ** Reads the psa for the wavelan at (base) into (buf) |
| 2433 | */ |
| 2434 | static void |
| 2435 | wlgetpsa(int base, u_char *buf) |
| 2436 | { |
| 2437 | int i; |
| 2438 | |
| 2439 | PCMD(base, HACR_DEFAULT & ~HACR_16BITS); |
| 2440 | PCMD(base, HACR_DEFAULT & ~HACR_16BITS); |
| 2441 | |
| 2442 | for (i = 0; i < 0x40; i++) { |
| 2443 | outw(PIOR2(base), i); |
| 2444 | buf[i] = inb(PIOP2(base)); |
| 2445 | } |
| 2446 | PCMD(base, HACR_DEFAULT); |
| 2447 | PCMD(base, HACR_DEFAULT); |
| 2448 | } |
| 2449 | |
| 2450 | /* |
| 2451 | ** wlsetpsa |
| 2452 | ** |
| 2453 | ** Writes the psa for wavelan (unit) from the softc back to the |
| 2454 | ** board. Updates the CRC and sets the CRC OK flag. |
| 2455 | ** |
| 2456 | ** Do not call this when the board is operating, as it doesn't |
| 2457 | ** preserve the hacr. |
| 2458 | */ |
| 2459 | static void |
| 2460 | wlsetpsa(struct wl_softc *sc) |
| 2461 | { |
| 2462 | short base = sc->base; |
| 2463 | int i; |
| 2464 | u_short crc; |
| 2465 | |
| 2466 | crc = wlpsacrc(sc->psa); /* calculate CRC of PSA */ |
| 2467 | sc->psa[WLPSA_CRCLOW] = crc & 0xff; |
| 2468 | sc->psa[WLPSA_CRCHIGH] = (crc >> 8) & 0xff; |
| 2469 | sc->psa[WLPSA_CRCOK] = 0x55; /* default to 'bad' until programming complete */ |
| 2470 | |
| 2471 | PCMD(base, HACR_DEFAULT & ~HACR_16BITS); |
| 2472 | PCMD(base, HACR_DEFAULT & ~HACR_16BITS); |
| 2473 | |
| 2474 | for (i = 0; i < 0x40; i++) { |
| 2475 | DELAY(DELAYCONST); |
| 2476 | outw(PIOR2(base),i); /* write param memory */ |
| 2477 | DELAY(DELAYCONST); |
| 2478 | outb(PIOP2(base), sc->psa[i]); |
| 2479 | } |
| 2480 | DELAY(DELAYCONST); |
| 2481 | outw(PIOR2(base),WLPSA_CRCOK); /* update CRC flag*/ |
| 2482 | DELAY(DELAYCONST); |
| 2483 | sc->psa[WLPSA_CRCOK] = 0xaa; /* OK now */ |
| 2484 | outb(PIOP2(base), 0xaa); /* all OK */ |
| 2485 | DELAY(DELAYCONST); |
| 2486 | |
| 2487 | PCMD(base, HACR_DEFAULT); |
| 2488 | PCMD(base, HACR_DEFAULT); |
| 2489 | } |
| 2490 | |
| 2491 | /* |
| 2492 | ** CRC routine provided by Christopher Giordano <cgiordan@gdeb.com>, |
| 2493 | ** from original code by Tomi Mikkonen (tomitm@remedy.fi) |
| 2494 | */ |
| 2495 | |
| 2496 | static u_int crc16_table[16] = { |
| 2497 | 0x0000, 0xCC01, 0xD801, 0x1400, |
| 2498 | 0xF001, 0x3C00, 0x2800, 0xE401, |
| 2499 | 0xA001, 0x6C00, 0x7800, 0xB401, |
| 2500 | 0x5000, 0x9C01, 0x8801, 0x4400 |
| 2501 | }; |
| 2502 | |
| 2503 | static u_short |
| 2504 | wlpsacrc(u_char *buf) |
| 2505 | { |
| 2506 | u_short crc = 0; |
| 2507 | int i, r1; |
| 2508 | |
| 2509 | for (i = 0; i < 0x3d; i++, buf++) { |
| 2510 | /* lower 4 bits */ |
| 2511 | r1 = crc16_table[crc & 0xF]; |
| 2512 | crc = (crc >> 4) & 0x0FFF; |
| 2513 | crc = crc ^ r1 ^ crc16_table[*buf & 0xF]; |
| 2514 | |
| 2515 | /* upper 4 bits */ |
| 2516 | r1 = crc16_table[crc & 0xF]; |
| 2517 | crc = (crc >> 4) & 0x0FFF; |
| 2518 | crc = crc ^ r1 ^ crc16_table[(*buf >> 4) & 0xF]; |
| 2519 | } |
| 2520 | return(crc); |
| 2521 | } |
| 2522 | #ifdef WLCACHE |
| 2523 | |
| 2524 | /* |
| 2525 | * wl_cache_store |
| 2526 | * |
| 2527 | * take input packet and cache various radio hw characteristics |
| 2528 | * indexed by MAC address. |
| 2529 | * |
| 2530 | * Some things to think about: |
| 2531 | * note that no space is malloced. |
| 2532 | * We might hash the mac address if the cache were bigger. |
| 2533 | * It is not clear that the cache is big enough. |
| 2534 | * It is also not clear how big it should be. |
| 2535 | * The cache is IP-specific. We don't care about that as |
| 2536 | * we want it to be IP-specific. |
| 2537 | * The last N recv. packets are saved. This will tend |
| 2538 | * to reward agents and mobile hosts that beacon. |
| 2539 | * That is probably fine for mobile ip. |
| 2540 | */ |
| 2541 | |
| 2542 | /* globals for wavelan signal strength cache */ |
| 2543 | /* this should go into softc structure above. |
| 2544 | */ |
| 2545 | |
| 2546 | /* set true if you want to limit cache items to broadcast/mcast |
| 2547 | * only packets (not unicast) |
| 2548 | */ |
| 2549 | static int wl_cache_mcastonly = 1; |
| 2550 | SYSCTL_INT(_machdep, OID_AUTO, wl_cache_mcastonly, CTLFLAG_RW, |
| 2551 | &wl_cache_mcastonly, 0, ""); |
| 2552 | |
| 2553 | /* set true if you want to limit cache items to IP packets only |
| 2554 | */ |
| 2555 | static int wl_cache_iponly = 1; |
| 2556 | SYSCTL_INT(_machdep, OID_AUTO, wl_cache_iponly, CTLFLAG_RW, |
| 2557 | &wl_cache_iponly, 0, ""); |
| 2558 | |
| 2559 | /* zero out the cache |
| 2560 | */ |
| 2561 | static void |
| 2562 | wl_cache_zero(struct wl_softc *sc) |
| 2563 | { |
| 2564 | bzero(&sc->w_sigcache[0], sizeof(struct w_sigcache) * MAXCACHEITEMS); |
| 2565 | sc->w_sigitems = 0; |
| 2566 | sc->w_nextcache = 0; |
| 2567 | sc->w_wrapindex = 0; |
| 2568 | } |
| 2569 | |
| 2570 | /* store hw signal info in cache. |
| 2571 | * index is MAC address, but an ip src gets stored too |
| 2572 | * There are two filters here controllable via sysctl: |
| 2573 | * throw out unicast (on by default, but can be turned off) |
| 2574 | * throw out non-ip (on by default, but can be turned off) |
| 2575 | */ |
| 2576 | static |
| 2577 | void wl_cache_store (struct wl_softc *sc, int base, struct ether_header *eh, |
| 2578 | struct mbuf *m) |
| 2579 | { |
| 2580 | struct ip *ip = NULL; /* Avoid GCC warning */ |
| 2581 | int i; |
| 2582 | int signal, silence; |
| 2583 | int w_insertcache; /* computed index for cache entry storage */ |
| 2584 | int ipflag = wl_cache_iponly; |
| 2585 | |
| 2586 | /* filters: |
| 2587 | * 1. ip only |
| 2588 | * 2. configurable filter to throw out unicast packets, |
| 2589 | * keep multicast only. |
| 2590 | */ |
| 2591 | |
| 2592 | #ifdef INET |
| 2593 | /* reject if not IP packet |
| 2594 | */ |
| 2595 | if ( wl_cache_iponly && (ntohs(eh->ether_type) != 0x800)) { |
| 2596 | return; |
| 2597 | } |
| 2598 | |
| 2599 | /* check if broadcast or multicast packet. we toss |
| 2600 | * unicast packets |
| 2601 | */ |
| 2602 | if (wl_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) { |
| 2603 | return; |
| 2604 | } |
| 2605 | |
| 2606 | /* find the ip header. we want to store the ip_src |
| 2607 | * address. use the mtod macro(in mbuf.h) |
| 2608 | * to typecast m to struct ip * |
| 2609 | */ |
| 2610 | if (ipflag) { |
| 2611 | ip = mtod(m, struct ip *); |
| 2612 | } |
| 2613 | |
| 2614 | /* do a linear search for a matching MAC address |
| 2615 | * in the cache table |
| 2616 | * . MAC address is 6 bytes, |
| 2617 | * . var w_nextcache holds total number of entries already cached |
| 2618 | */ |
| 2619 | for(i = 0; i < sc->w_nextcache; i++) { |
| 2620 | if (! bcmp(eh->ether_shost, sc->w_sigcache[i].macsrc, 6 )) { |
| 2621 | /* Match!, |
| 2622 | * so we already have this entry, |
| 2623 | * update the data, and LRU age |
| 2624 | */ |
| 2625 | break; |
| 2626 | } |
| 2627 | } |
| 2628 | |
| 2629 | /* did we find a matching mac address? |
| 2630 | * if yes, then overwrite a previously existing cache entry |
| 2631 | */ |
| 2632 | if (i < sc->w_nextcache ) { |
| 2633 | w_insertcache = i; |
| 2634 | } |
| 2635 | /* else, have a new address entry,so |
| 2636 | * add this new entry, |
| 2637 | * if table full, then we need to replace entry |
| 2638 | */ |
| 2639 | else { |
| 2640 | |
| 2641 | /* check for space in cache table |
| 2642 | * note: w_nextcache also holds number of entries |
| 2643 | * added in the cache table |
| 2644 | */ |
| 2645 | if ( sc->w_nextcache < MAXCACHEITEMS ) { |
| 2646 | w_insertcache = sc->w_nextcache; |
| 2647 | sc->w_nextcache++; |
| 2648 | sc->w_sigitems = sc->w_nextcache; |
| 2649 | } |
| 2650 | /* no space found, so simply wrap with wrap index |
| 2651 | * and "zap" the next entry |
| 2652 | */ |
| 2653 | else { |
| 2654 | if (sc->w_wrapindex == MAXCACHEITEMS) { |
| 2655 | sc->w_wrapindex = 0; |
| 2656 | } |
| 2657 | w_insertcache = sc->w_wrapindex++; |
| 2658 | } |
| 2659 | } |
| 2660 | |
| 2661 | /* invariant: w_insertcache now points at some slot |
| 2662 | * in cache. |
| 2663 | */ |
| 2664 | if (w_insertcache < 0 || w_insertcache >= MAXCACHEITEMS) { |
| 2665 | log(LOG_ERR, |
| 2666 | "wl_cache_store, bad index: %d of [0..%d], gross cache error\n", |
| 2667 | w_insertcache, MAXCACHEITEMS); |
| 2668 | return; |
| 2669 | } |
| 2670 | |
| 2671 | /* store items in cache |
| 2672 | * .ipsrc |
| 2673 | * .macsrc |
| 2674 | * .signal (0..63) ,silence (0..63) ,quality (0..15) |
| 2675 | */ |
| 2676 | if (ipflag) { |
| 2677 | sc->w_sigcache[w_insertcache].ipsrc = ip->ip_src.s_addr; |
| 2678 | } |
| 2679 | bcopy( eh->ether_shost, sc->w_sigcache[w_insertcache].macsrc, 6); |
| 2680 | signal = sc->w_sigcache[w_insertcache].signal = wlmmcread(base, MMC_SIGNAL_LVL) & 0x3f; |
| 2681 | silence = sc->w_sigcache[w_insertcache].silence = wlmmcread(base, MMC_SILENCE_LVL) & 0x3f; |
| 2682 | sc->w_sigcache[w_insertcache].quality = wlmmcread(base, MMC_SIGN_QUAL) & 0x0f; |
| 2683 | if (signal > 0) |
| 2684 | sc->w_sigcache[w_insertcache].snr = |
| 2685 | signal - silence; |
| 2686 | else |
| 2687 | sc->w_sigcache[w_insertcache].snr = 0; |
| 2688 | #endif /* INET */ |
| 2689 | |
| 2690 | } |
| 2691 | #endif /* WLCACHE */ |
| 2692 | |
| 2693 | /* |
| 2694 | * determine if in all multicast mode or not |
| 2695 | * |
| 2696 | * returns: 1 if IFF_ALLMULTI should be set |
| 2697 | * else 0 |
| 2698 | */ |
| 2699 | #ifdef MULTICAST |
| 2700 | |
| 2701 | #if defined(__FreeBSD__) && __FreeBSD_version < 300000 /* not required */ |
| 2702 | static int |
| 2703 | check_allmulti(struct wl_softc *sc) |
| 2704 | { |
| 2705 | short base = sc->base; |
| 2706 | struct ether_multi *enm; |
| 2707 | struct ether_multistep step; |
| 2708 | |
| 2709 | ETHER_FIRST_MULTI(step, &sc->wl_ac, enm); |
| 2710 | while (enm != NULL) { |
| 2711 | unsigned int lo, hi; |
| 2712 | #ifdef MDEBUG |
| 2713 | printf("enm_addrlo %x:%x:%x:%x:%x:%x\n", enm->enm_addrlo[0], enm->enm_addrlo[1], |
| 2714 | enm->enm_addrlo[2], enm->enm_addrlo[3], enm->enm_addrlo[4], |
| 2715 | enm->enm_addrlo[5]); |
| 2716 | printf("enm_addrhi %x:%x:%x:%x:%x:%x\n", enm->enm_addrhi[0], enm->enm_addrhi[1], |
| 2717 | enm->enm_addrhi[2], enm->enm_addrhi[3], enm->enm_addrhi[4], |
| 2718 | enm->enm_addrhi[5]); |
| 2719 | #endif |
| 2720 | if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { |
| 2721 | return(1); |
| 2722 | } |
| 2723 | ETHER_NEXT_MULTI(step, enm); |
| 2724 | } |
| 2725 | return(0); |
| 2726 | } |
| 2727 | #endif |
| 2728 | #endif |