304 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
305
306 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
307 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap),
308 &sc->sc_drvbpf);
309
310 sc->sc_rxtap_len = sizeof sc->sc_rxtap;
311 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
312 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
313
314 sc->sc_txtap_len = sizeof sc->sc_txtap;
315 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
316 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
317
318 /*
319 * Add a few sysctl knobs.
320 */
321 sc->dwelltime = 200;
322
323 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
324 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
325 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
326
327 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
328 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
329 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
330
331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
333 CTLFLAG_RW, &sc->dwelltime, 0,
334 "channel dwell time (ms) for AP/station scanning");
335
336 if (bootverbose)
337 ieee80211_announce(ic);
338
339 return 0;
340
341fail6: rt2560_free_rx_ring(sc, &sc->rxq);
342fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
343fail4: rt2560_free_tx_ring(sc, &sc->prioq);
344fail3: rt2560_free_tx_ring(sc, &sc->atimq);
345fail2: rt2560_free_tx_ring(sc, &sc->txq);
346fail1: mtx_destroy(&sc->sc_mtx);
347
348 return ENXIO;
349}
350
351int
352rt2560_detach(void *xsc)
353{
354 struct rt2560_softc *sc = xsc;
355 struct ieee80211com *ic = &sc->sc_ic;
356 struct ifnet *ifp = ic->ic_ifp;
357
358 rt2560_stop(sc);
359 callout_stop(&sc->watchdog_ch);
360 callout_stop(&sc->rssadapt_ch);
361
362 bpfdetach(ifp);
363 ieee80211_ifdetach(ic);
364
365 rt2560_free_tx_ring(sc, &sc->txq);
366 rt2560_free_tx_ring(sc, &sc->atimq);
367 rt2560_free_tx_ring(sc, &sc->prioq);
368 rt2560_free_tx_ring(sc, &sc->bcnq);
369 rt2560_free_rx_ring(sc, &sc->rxq);
370
371 if_free(ifp);
372
373 mtx_destroy(&sc->sc_mtx);
374
375 return 0;
376}
377
378void
379rt2560_resume(void *xsc)
380{
381 struct rt2560_softc *sc = xsc;
382 struct ifnet *ifp = sc->sc_ic.ic_ifp;
383
384 if (ifp->if_flags & IFF_UP) {
385 ifp->if_init(ifp->if_softc);
386 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
387 ifp->if_start(ifp);
388 }
389}
390
391static void
392rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
393{
394 if (error != 0)
395 return;
396
397 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
398
399 *(bus_addr_t *)arg = segs[0].ds_addr;
400}
401
402static int
403rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
404 int count)
405{
406 int i, error;
407
408 ring->count = count;
409 ring->queued = 0;
410 ring->cur = ring->next = 0;
411 ring->cur_encrypt = ring->next_encrypt = 0;
412
413 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
414 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
415 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
416 0, NULL, NULL, &ring->desc_dmat);
417 if (error != 0) {
418 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
419 goto fail;
420 }
421
422 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
423 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
424 if (error != 0) {
425 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
426 goto fail;
427 }
428
429 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
430 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
431 0);
432 if (error != 0) {
433 device_printf(sc->sc_dev, "could not load desc DMA map\n");
434 goto fail;
435 }
436
437 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
438 M_NOWAIT | M_ZERO);
439 if (ring->data == NULL) {
440 device_printf(sc->sc_dev, "could not allocate soft data\n");
441 error = ENOMEM;
442 goto fail;
443 }
444
445 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
446 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
447 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
448 &ring->data_dmat);
449 if (error != 0) {
450 device_printf(sc->sc_dev, "could not create data DMA tag\n");
451 goto fail;
452 }
453
454 for (i = 0; i < count; i++) {
455 error = bus_dmamap_create(ring->data_dmat, 0,
456 &ring->data[i].map);
457 if (error != 0) {
458 device_printf(sc->sc_dev, "could not create DMA map\n");
459 goto fail;
460 }
461 }
462
463 return 0;
464
465fail: rt2560_free_tx_ring(sc, ring);
466 return error;
467}
468
469static void
470rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
471{
472 struct rt2560_tx_desc *desc;
473 struct rt2560_tx_data *data;
474 int i;
475
476 for (i = 0; i < ring->count; i++) {
477 desc = &ring->desc[i];
478 data = &ring->data[i];
479
480 if (data->m != NULL) {
481 bus_dmamap_sync(ring->data_dmat, data->map,
482 BUS_DMASYNC_POSTWRITE);
483 bus_dmamap_unload(ring->data_dmat, data->map);
484 m_freem(data->m);
485 data->m = NULL;
486 }
487
488 if (data->ni != NULL) {
489 ieee80211_free_node(data->ni);
490 data->ni = NULL;
491 }
492
493 desc->flags = 0;
494 }
495
496 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
497
498 ring->queued = 0;
499 ring->cur = ring->next = 0;
500 ring->cur_encrypt = ring->next_encrypt = 0;
501}
502
503static void
504rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
505{
506 struct rt2560_tx_data *data;
507 int i;
508
509 if (ring->desc != NULL) {
510 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
511 BUS_DMASYNC_POSTWRITE);
512 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
513 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
514 }
515
516 if (ring->desc_dmat != NULL)
517 bus_dma_tag_destroy(ring->desc_dmat);
518
519 if (ring->data != NULL) {
520 for (i = 0; i < ring->count; i++) {
521 data = &ring->data[i];
522
523 if (data->m != NULL) {
524 bus_dmamap_sync(ring->data_dmat, data->map,
525 BUS_DMASYNC_POSTWRITE);
526 bus_dmamap_unload(ring->data_dmat, data->map);
527 m_freem(data->m);
528 }
529
530 if (data->ni != NULL)
531 ieee80211_free_node(data->ni);
532
533 if (data->map != NULL)
534 bus_dmamap_destroy(ring->data_dmat, data->map);
535 }
536
537 free(ring->data, M_DEVBUF);
538 }
539
540 if (ring->data_dmat != NULL)
541 bus_dma_tag_destroy(ring->data_dmat);
542}
543
544static int
545rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
546 int count)
547{
548 struct rt2560_rx_desc *desc;
549 struct rt2560_rx_data *data;
550 bus_addr_t physaddr;
551 int i, error;
552
553 ring->count = count;
554 ring->cur = ring->next = 0;
555 ring->cur_decrypt = 0;
556
557 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
558 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
559 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
560 0, NULL, NULL, &ring->desc_dmat);
561 if (error != 0) {
562 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
563 goto fail;
564 }
565
566 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
567 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
568 if (error != 0) {
569 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
570 goto fail;
571 }
572
573 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
574 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
575 0);
576 if (error != 0) {
577 device_printf(sc->sc_dev, "could not load desc DMA map\n");
578 goto fail;
579 }
580
581 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
582 M_NOWAIT | M_ZERO);
583 if (ring->data == NULL) {
584 device_printf(sc->sc_dev, "could not allocate soft data\n");
585 error = ENOMEM;
586 goto fail;
587 }
588
589 /*
590 * Pre-allocate Rx buffers and populate Rx ring.
591 */
592 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
593 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
594 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
595 if (error != 0) {
596 device_printf(sc->sc_dev, "could not create data DMA tag\n");
597 goto fail;
598 }
599
600 for (i = 0; i < count; i++) {
601 desc = &sc->rxq.desc[i];
602 data = &sc->rxq.data[i];
603
604 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
605 if (error != 0) {
606 device_printf(sc->sc_dev, "could not create DMA map\n");
607 goto fail;
608 }
609
610 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
611 if (data->m == NULL) {
612 device_printf(sc->sc_dev,
613 "could not allocate rx mbuf\n");
614 error = ENOMEM;
615 goto fail;
616 }
617
618 error = bus_dmamap_load(ring->data_dmat, data->map,
619 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
620 &physaddr, 0);
621 if (error != 0) {
622 device_printf(sc->sc_dev,
623 "could not load rx buf DMA map");
624 goto fail;
625 }
626
627 desc->flags = htole32(RT2560_RX_BUSY);
628 desc->physaddr = htole32(physaddr);
629 }
630
631 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
632
633 return 0;
634
635fail: rt2560_free_rx_ring(sc, ring);
636 return error;
637}
638
639static void
640rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
641{
642 int i;
643
644 for (i = 0; i < ring->count; i++) {
645 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
646 ring->data[i].drop = 0;
647 }
648
649 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
650
651 ring->cur = ring->next = 0;
652 ring->cur_decrypt = 0;
653}
654
655static void
656rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
657{
658 struct rt2560_rx_data *data;
659 int i;
660
661 if (ring->desc != NULL) {
662 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
663 BUS_DMASYNC_POSTWRITE);
664 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
665 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
666 }
667
668 if (ring->desc_dmat != NULL)
669 bus_dma_tag_destroy(ring->desc_dmat);
670
671 if (ring->data != NULL) {
672 for (i = 0; i < ring->count; i++) {
673 data = &ring->data[i];
674
675 if (data->m != NULL) {
676 bus_dmamap_sync(ring->data_dmat, data->map,
677 BUS_DMASYNC_POSTREAD);
678 bus_dmamap_unload(ring->data_dmat, data->map);
679 m_freem(data->m);
680 }
681
682 if (data->map != NULL)
683 bus_dmamap_destroy(ring->data_dmat, data->map);
684 }
685
686 free(ring->data, M_DEVBUF);
687 }
688
689 if (ring->data_dmat != NULL)
690 bus_dma_tag_destroy(ring->data_dmat);
691}
692
693static struct ieee80211_node *
694rt2560_node_alloc(struct ieee80211_node_table *nt)
695{
696 struct rt2560_node *rn;
697
698 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
699 M_NOWAIT | M_ZERO);
700
701 return (rn != NULL) ? &rn->ni : NULL;
702}
703
704static int
705rt2560_media_change(struct ifnet *ifp)
706{
707 struct rt2560_softc *sc = ifp->if_softc;
708 int error;
709
710 error = ieee80211_media_change(ifp);
711
712 if (error == ENETRESET) {
713 if ((ifp->if_flags & IFF_UP) &&
714 (ifp->if_drv_flags & IFF_DRV_RUNNING))
715 rt2560_init(sc);
716 }
717 return error;
718}
719
720/*
721 * This function is called for each node present in the node station table.
722 */
723static void
724rt2560_iter_func(void *arg, struct ieee80211_node *ni)
725{
726 struct rt2560_node *rn = (struct rt2560_node *)ni;
727
728 ral_rssadapt_updatestats(&rn->rssadapt);
729}
730
731/*
732 * This function is called periodically (every 100ms) in RUN state to update
733 * the rate adaptation statistics.
734 */
735static void
736rt2560_update_rssadapt(void *arg)
737{
738 struct rt2560_softc *sc = arg;
739 struct ieee80211com *ic = &sc->sc_ic;
740
741 RAL_LOCK(sc);
742
743 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
744 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
745
746 RAL_UNLOCK(sc);
747}
748
749static int
750rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
751{
752 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
753 enum ieee80211_state ostate;
754 struct ieee80211_node *ni;
755 struct mbuf *m;
756 int error = 0;
757
758 ostate = ic->ic_state;
759
760 switch (nstate) {
761 case IEEE80211_S_INIT:
762 callout_stop(&sc->rssadapt_ch);
763
764 if (ostate == IEEE80211_S_RUN) {
765 /* abort TSF synchronization */
766 RAL_WRITE(sc, RT2560_CSR14, 0);
767
768 /* turn association led off */
769 rt2560_update_led(sc, 0, 0);
770 }
771 break;
772 case IEEE80211_S_RUN:
773 ni = ic->ic_bss;
774
775 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
776 rt2560_update_plcp(sc);
777 rt2560_set_basicrates(sc);
778 rt2560_set_bssid(sc, ni->ni_bssid);
779 }
780
781 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
782 ic->ic_opmode == IEEE80211_M_IBSS) {
| 306 ieee80211_media_init(ic, rt2560_media_change, ieee80211_media_status);
307
308 bpfattach2(ifp, DLT_IEEE802_11_RADIO,
309 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap),
310 &sc->sc_drvbpf);
311
312 sc->sc_rxtap_len = sizeof sc->sc_rxtap;
313 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
314 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT);
315
316 sc->sc_txtap_len = sizeof sc->sc_txtap;
317 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
318 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT);
319
320 /*
321 * Add a few sysctl knobs.
322 */
323 sc->dwelltime = 200;
324
325 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
326 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
327 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
328
329 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
330 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
331 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
332
333 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
334 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
335 CTLFLAG_RW, &sc->dwelltime, 0,
336 "channel dwell time (ms) for AP/station scanning");
337
338 if (bootverbose)
339 ieee80211_announce(ic);
340
341 return 0;
342
343fail6: rt2560_free_rx_ring(sc, &sc->rxq);
344fail5: rt2560_free_tx_ring(sc, &sc->bcnq);
345fail4: rt2560_free_tx_ring(sc, &sc->prioq);
346fail3: rt2560_free_tx_ring(sc, &sc->atimq);
347fail2: rt2560_free_tx_ring(sc, &sc->txq);
348fail1: mtx_destroy(&sc->sc_mtx);
349
350 return ENXIO;
351}
352
353int
354rt2560_detach(void *xsc)
355{
356 struct rt2560_softc *sc = xsc;
357 struct ieee80211com *ic = &sc->sc_ic;
358 struct ifnet *ifp = ic->ic_ifp;
359
360 rt2560_stop(sc);
361 callout_stop(&sc->watchdog_ch);
362 callout_stop(&sc->rssadapt_ch);
363
364 bpfdetach(ifp);
365 ieee80211_ifdetach(ic);
366
367 rt2560_free_tx_ring(sc, &sc->txq);
368 rt2560_free_tx_ring(sc, &sc->atimq);
369 rt2560_free_tx_ring(sc, &sc->prioq);
370 rt2560_free_tx_ring(sc, &sc->bcnq);
371 rt2560_free_rx_ring(sc, &sc->rxq);
372
373 if_free(ifp);
374
375 mtx_destroy(&sc->sc_mtx);
376
377 return 0;
378}
379
380void
381rt2560_resume(void *xsc)
382{
383 struct rt2560_softc *sc = xsc;
384 struct ifnet *ifp = sc->sc_ic.ic_ifp;
385
386 if (ifp->if_flags & IFF_UP) {
387 ifp->if_init(ifp->if_softc);
388 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
389 ifp->if_start(ifp);
390 }
391}
392
393static void
394rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
395{
396 if (error != 0)
397 return;
398
399 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
400
401 *(bus_addr_t *)arg = segs[0].ds_addr;
402}
403
404static int
405rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring,
406 int count)
407{
408 int i, error;
409
410 ring->count = count;
411 ring->queued = 0;
412 ring->cur = ring->next = 0;
413 ring->cur_encrypt = ring->next_encrypt = 0;
414
415 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
416 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
417 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE,
418 0, NULL, NULL, &ring->desc_dmat);
419 if (error != 0) {
420 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
421 goto fail;
422 }
423
424 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
425 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
426 if (error != 0) {
427 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
428 goto fail;
429 }
430
431 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
432 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
433 0);
434 if (error != 0) {
435 device_printf(sc->sc_dev, "could not load desc DMA map\n");
436 goto fail;
437 }
438
439 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF,
440 M_NOWAIT | M_ZERO);
441 if (ring->data == NULL) {
442 device_printf(sc->sc_dev, "could not allocate soft data\n");
443 error = ENOMEM;
444 goto fail;
445 }
446
447 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
448 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
449 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL,
450 &ring->data_dmat);
451 if (error != 0) {
452 device_printf(sc->sc_dev, "could not create data DMA tag\n");
453 goto fail;
454 }
455
456 for (i = 0; i < count; i++) {
457 error = bus_dmamap_create(ring->data_dmat, 0,
458 &ring->data[i].map);
459 if (error != 0) {
460 device_printf(sc->sc_dev, "could not create DMA map\n");
461 goto fail;
462 }
463 }
464
465 return 0;
466
467fail: rt2560_free_tx_ring(sc, ring);
468 return error;
469}
470
471static void
472rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
473{
474 struct rt2560_tx_desc *desc;
475 struct rt2560_tx_data *data;
476 int i;
477
478 for (i = 0; i < ring->count; i++) {
479 desc = &ring->desc[i];
480 data = &ring->data[i];
481
482 if (data->m != NULL) {
483 bus_dmamap_sync(ring->data_dmat, data->map,
484 BUS_DMASYNC_POSTWRITE);
485 bus_dmamap_unload(ring->data_dmat, data->map);
486 m_freem(data->m);
487 data->m = NULL;
488 }
489
490 if (data->ni != NULL) {
491 ieee80211_free_node(data->ni);
492 data->ni = NULL;
493 }
494
495 desc->flags = 0;
496 }
497
498 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
499
500 ring->queued = 0;
501 ring->cur = ring->next = 0;
502 ring->cur_encrypt = ring->next_encrypt = 0;
503}
504
505static void
506rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring)
507{
508 struct rt2560_tx_data *data;
509 int i;
510
511 if (ring->desc != NULL) {
512 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
513 BUS_DMASYNC_POSTWRITE);
514 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
515 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
516 }
517
518 if (ring->desc_dmat != NULL)
519 bus_dma_tag_destroy(ring->desc_dmat);
520
521 if (ring->data != NULL) {
522 for (i = 0; i < ring->count; i++) {
523 data = &ring->data[i];
524
525 if (data->m != NULL) {
526 bus_dmamap_sync(ring->data_dmat, data->map,
527 BUS_DMASYNC_POSTWRITE);
528 bus_dmamap_unload(ring->data_dmat, data->map);
529 m_freem(data->m);
530 }
531
532 if (data->ni != NULL)
533 ieee80211_free_node(data->ni);
534
535 if (data->map != NULL)
536 bus_dmamap_destroy(ring->data_dmat, data->map);
537 }
538
539 free(ring->data, M_DEVBUF);
540 }
541
542 if (ring->data_dmat != NULL)
543 bus_dma_tag_destroy(ring->data_dmat);
544}
545
546static int
547rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring,
548 int count)
549{
550 struct rt2560_rx_desc *desc;
551 struct rt2560_rx_data *data;
552 bus_addr_t physaddr;
553 int i, error;
554
555 ring->count = count;
556 ring->cur = ring->next = 0;
557 ring->cur_decrypt = 0;
558
559 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
560 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
561 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE,
562 0, NULL, NULL, &ring->desc_dmat);
563 if (error != 0) {
564 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
565 goto fail;
566 }
567
568 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
569 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
570 if (error != 0) {
571 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
572 goto fail;
573 }
574
575 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
576 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr,
577 0);
578 if (error != 0) {
579 device_printf(sc->sc_dev, "could not load desc DMA map\n");
580 goto fail;
581 }
582
583 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF,
584 M_NOWAIT | M_ZERO);
585 if (ring->data == NULL) {
586 device_printf(sc->sc_dev, "could not allocate soft data\n");
587 error = ENOMEM;
588 goto fail;
589 }
590
591 /*
592 * Pre-allocate Rx buffers and populate Rx ring.
593 */
594 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
595 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
596 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
597 if (error != 0) {
598 device_printf(sc->sc_dev, "could not create data DMA tag\n");
599 goto fail;
600 }
601
602 for (i = 0; i < count; i++) {
603 desc = &sc->rxq.desc[i];
604 data = &sc->rxq.data[i];
605
606 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
607 if (error != 0) {
608 device_printf(sc->sc_dev, "could not create DMA map\n");
609 goto fail;
610 }
611
612 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
613 if (data->m == NULL) {
614 device_printf(sc->sc_dev,
615 "could not allocate rx mbuf\n");
616 error = ENOMEM;
617 goto fail;
618 }
619
620 error = bus_dmamap_load(ring->data_dmat, data->map,
621 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr,
622 &physaddr, 0);
623 if (error != 0) {
624 device_printf(sc->sc_dev,
625 "could not load rx buf DMA map");
626 goto fail;
627 }
628
629 desc->flags = htole32(RT2560_RX_BUSY);
630 desc->physaddr = htole32(physaddr);
631 }
632
633 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
634
635 return 0;
636
637fail: rt2560_free_rx_ring(sc, ring);
638 return error;
639}
640
641static void
642rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
643{
644 int i;
645
646 for (i = 0; i < ring->count; i++) {
647 ring->desc[i].flags = htole32(RT2560_RX_BUSY);
648 ring->data[i].drop = 0;
649 }
650
651 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
652
653 ring->cur = ring->next = 0;
654 ring->cur_decrypt = 0;
655}
656
657static void
658rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring)
659{
660 struct rt2560_rx_data *data;
661 int i;
662
663 if (ring->desc != NULL) {
664 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
665 BUS_DMASYNC_POSTWRITE);
666 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
667 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
668 }
669
670 if (ring->desc_dmat != NULL)
671 bus_dma_tag_destroy(ring->desc_dmat);
672
673 if (ring->data != NULL) {
674 for (i = 0; i < ring->count; i++) {
675 data = &ring->data[i];
676
677 if (data->m != NULL) {
678 bus_dmamap_sync(ring->data_dmat, data->map,
679 BUS_DMASYNC_POSTREAD);
680 bus_dmamap_unload(ring->data_dmat, data->map);
681 m_freem(data->m);
682 }
683
684 if (data->map != NULL)
685 bus_dmamap_destroy(ring->data_dmat, data->map);
686 }
687
688 free(ring->data, M_DEVBUF);
689 }
690
691 if (ring->data_dmat != NULL)
692 bus_dma_tag_destroy(ring->data_dmat);
693}
694
695static struct ieee80211_node *
696rt2560_node_alloc(struct ieee80211_node_table *nt)
697{
698 struct rt2560_node *rn;
699
700 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE,
701 M_NOWAIT | M_ZERO);
702
703 return (rn != NULL) ? &rn->ni : NULL;
704}
705
706static int
707rt2560_media_change(struct ifnet *ifp)
708{
709 struct rt2560_softc *sc = ifp->if_softc;
710 int error;
711
712 error = ieee80211_media_change(ifp);
713
714 if (error == ENETRESET) {
715 if ((ifp->if_flags & IFF_UP) &&
716 (ifp->if_drv_flags & IFF_DRV_RUNNING))
717 rt2560_init(sc);
718 }
719 return error;
720}
721
722/*
723 * This function is called for each node present in the node station table.
724 */
725static void
726rt2560_iter_func(void *arg, struct ieee80211_node *ni)
727{
728 struct rt2560_node *rn = (struct rt2560_node *)ni;
729
730 ral_rssadapt_updatestats(&rn->rssadapt);
731}
732
733/*
734 * This function is called periodically (every 100ms) in RUN state to update
735 * the rate adaptation statistics.
736 */
737static void
738rt2560_update_rssadapt(void *arg)
739{
740 struct rt2560_softc *sc = arg;
741 struct ieee80211com *ic = &sc->sc_ic;
742
743 RAL_LOCK(sc);
744
745 ieee80211_iterate_nodes(&ic->ic_sta, rt2560_iter_func, arg);
746 callout_reset(&sc->rssadapt_ch, hz / 10, rt2560_update_rssadapt, sc);
747
748 RAL_UNLOCK(sc);
749}
750
751static int
752rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
753{
754 struct rt2560_softc *sc = ic->ic_ifp->if_softc;
755 enum ieee80211_state ostate;
756 struct ieee80211_node *ni;
757 struct mbuf *m;
758 int error = 0;
759
760 ostate = ic->ic_state;
761
762 switch (nstate) {
763 case IEEE80211_S_INIT:
764 callout_stop(&sc->rssadapt_ch);
765
766 if (ostate == IEEE80211_S_RUN) {
767 /* abort TSF synchronization */
768 RAL_WRITE(sc, RT2560_CSR14, 0);
769
770 /* turn association led off */
771 rt2560_update_led(sc, 0, 0);
772 }
773 break;
774 case IEEE80211_S_RUN:
775 ni = ic->ic_bss;
776
777 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
778 rt2560_update_plcp(sc);
779 rt2560_set_basicrates(sc);
780 rt2560_set_bssid(sc, ni->ni_bssid);
781 }
782
783 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
784 ic->ic_opmode == IEEE80211_M_IBSS) {
|
784 if (m == NULL) {
785 device_printf(sc->sc_dev,
786 "could not allocate beacon\n");
787 error = ENOBUFS;
788 break;
789 }
790
791 ieee80211_ref_node(ni);
792 error = rt2560_tx_bcn(sc, m, ni);
793 if (error != 0)
794 break;
795 }
796
797 /* turn assocation led on */
798 rt2560_update_led(sc, 1, 0);
799
800 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
801 callout_reset(&sc->rssadapt_ch, hz / 10,
802 rt2560_update_rssadapt, sc);
803
804 rt2560_enable_tsf_sync(sc);
805 }
806 break;
807 case IEEE80211_S_SCAN:
808 case IEEE80211_S_AUTH:
809 case IEEE80211_S_ASSOC:
810 default:
811 break;
812 }
813
814 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
815}
816
817/*
818 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
819 * 93C66).
820 */
821static uint16_t
822rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
823{
824 uint32_t tmp;
825 uint16_t val;
826 int n;
827
828 /* clock C once before the first command */
829 RT2560_EEPROM_CTL(sc, 0);
830
831 RT2560_EEPROM_CTL(sc, RT2560_S);
832 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
833 RT2560_EEPROM_CTL(sc, RT2560_S);
834
835 /* write start bit (1) */
836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
837 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
838
839 /* write READ opcode (10) */
840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
841 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
842 RT2560_EEPROM_CTL(sc, RT2560_S);
843 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
844
845 /* write address (A5-A0 or A7-A0) */
846 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
847 for (; n >= 0; n--) {
848 RT2560_EEPROM_CTL(sc, RT2560_S |
849 (((addr >> n) & 1) << RT2560_SHIFT_D));
850 RT2560_EEPROM_CTL(sc, RT2560_S |
851 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
852 }
853
854 RT2560_EEPROM_CTL(sc, RT2560_S);
855
856 /* read data Q15-Q0 */
857 val = 0;
858 for (n = 15; n >= 0; n--) {
859 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
860 tmp = RAL_READ(sc, RT2560_CSR21);
861 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
862 RT2560_EEPROM_CTL(sc, RT2560_S);
863 }
864
865 RT2560_EEPROM_CTL(sc, 0);
866
867 /* clear Chip Select and clock C */
868 RT2560_EEPROM_CTL(sc, RT2560_S);
869 RT2560_EEPROM_CTL(sc, 0);
870 RT2560_EEPROM_CTL(sc, RT2560_C);
871
872 return val;
873}
874
875/*
876 * Some frames were processed by the hardware cipher engine and are ready for
877 * transmission.
878 */
879static void
880rt2560_encryption_intr(struct rt2560_softc *sc)
881{
882 struct rt2560_tx_desc *desc;
883 int hw;
884
885 /* retrieve last descriptor index processed by cipher engine */
886 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
887 hw /= RT2560_TX_DESC_SIZE;
888
889 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
890 BUS_DMASYNC_POSTREAD);
891
892 for (; sc->txq.next_encrypt != hw;) {
893 desc = &sc->txq.desc[sc->txq.next_encrypt];
894
895 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
896 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
897 break;
898
899 /* for TKIP, swap eiv field to fix a bug in ASIC */
900 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
901 RT2560_TX_CIPHER_TKIP)
902 desc->eiv = bswap32(desc->eiv);
903
904 /* mark the frame ready for transmission */
905 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
906
907 DPRINTFN(15, ("encryption done idx=%u\n",
908 sc->txq.next_encrypt));
909
910 sc->txq.next_encrypt =
911 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
912 }
913
914 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
915 BUS_DMASYNC_PREWRITE);
916
917 /* kick Tx */
918 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
919}
920
921static void
922rt2560_tx_intr(struct rt2560_softc *sc)
923{
924 struct ieee80211com *ic = &sc->sc_ic;
925 struct ifnet *ifp = ic->ic_ifp;
926 struct rt2560_tx_desc *desc;
927 struct rt2560_tx_data *data;
928 struct rt2560_node *rn;
929
930 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
931 BUS_DMASYNC_POSTREAD);
932
933 for (;;) {
934 desc = &sc->txq.desc[sc->txq.next];
935 data = &sc->txq.data[sc->txq.next];
936
937 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
938 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
939 !(le32toh(desc->flags) & RT2560_TX_VALID))
940 break;
941
942 rn = (struct rt2560_node *)data->ni;
943
944 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
945 case RT2560_TX_SUCCESS:
946 DPRINTFN(10, ("data frame sent successfully\n"));
947 if (data->id.id_node != NULL) {
948 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
949 &data->id);
950 }
951 ifp->if_opackets++;
952 break;
953
954 case RT2560_TX_SUCCESS_RETRY:
955 DPRINTFN(9, ("data frame sent after %u retries\n",
956 (le32toh(desc->flags) >> 5) & 0x7));
957 ifp->if_opackets++;
958 break;
959
960 case RT2560_TX_FAIL_RETRY:
961 DPRINTFN(9, ("sending data frame failed (too much "
962 "retries)\n"));
963 if (data->id.id_node != NULL) {
964 ral_rssadapt_lower_rate(ic, data->ni,
965 &rn->rssadapt, &data->id);
966 }
967 ifp->if_oerrors++;
968 break;
969
970 case RT2560_TX_FAIL_INVALID:
971 case RT2560_TX_FAIL_OTHER:
972 default:
973 device_printf(sc->sc_dev, "sending data frame failed "
974 "0x%08x\n", le32toh(desc->flags));
975 ifp->if_oerrors++;
976 }
977
978 bus_dmamap_sync(sc->txq.data_dmat, data->map,
979 BUS_DMASYNC_POSTWRITE);
980 bus_dmamap_unload(sc->txq.data_dmat, data->map);
981 m_freem(data->m);
982 data->m = NULL;
983 ieee80211_free_node(data->ni);
984 data->ni = NULL;
985
986 /* descriptor is no longer valid */
987 desc->flags &= ~htole32(RT2560_TX_VALID);
988
989 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
990
991 sc->txq.queued--;
992 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
993 }
994
995 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
996 BUS_DMASYNC_PREWRITE);
997
998 sc->sc_tx_timer = 0;
999 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1000 rt2560_start(ifp);
1001}
1002
1003static void
1004rt2560_prio_intr(struct rt2560_softc *sc)
1005{
1006 struct ieee80211com *ic = &sc->sc_ic;
1007 struct ifnet *ifp = ic->ic_ifp;
1008 struct rt2560_tx_desc *desc;
1009 struct rt2560_tx_data *data;
1010 struct ieee80211_node *ni;
1011 struct mbuf *m;
1012 int flags;
1013
1014 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1015 BUS_DMASYNC_POSTREAD);
1016
1017 for (;;) {
1018 desc = &sc->prioq.desc[sc->prioq.next];
1019 data = &sc->prioq.data[sc->prioq.next];
1020
1021 flags = le32toh(desc->flags);
1022 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
1023 break;
1024
1025 switch (flags & RT2560_TX_RESULT_MASK) {
1026 case RT2560_TX_SUCCESS:
1027 DPRINTFN(10, ("mgt frame sent successfully\n"));
1028 break;
1029
1030 case RT2560_TX_SUCCESS_RETRY:
1031 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1032 (flags >> 5) & 0x7));
1033 break;
1034
1035 case RT2560_TX_FAIL_RETRY:
1036 DPRINTFN(9, ("sending mgt frame failed (too much "
1037 "retries)\n"));
1038 break;
1039
1040 case RT2560_TX_FAIL_INVALID:
1041 case RT2560_TX_FAIL_OTHER:
1042 default:
1043 device_printf(sc->sc_dev, "sending mgt frame failed "
1044 "0x%08x\n", flags);
1045 break;
1046 }
1047
1048 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1049 BUS_DMASYNC_POSTWRITE);
1050 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1051
1052 m = data->m;
1053 data->m = NULL;
1054 ni = data->ni;
1055 data->ni = NULL;
1056
1057 /* descriptor is no longer valid */
1058 desc->flags &= ~htole32(RT2560_TX_VALID);
1059
1060 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1061
1062 sc->prioq.queued--;
1063 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1064
1065 if (m->m_flags & M_TXCB)
1066 ieee80211_process_callback(ni, m,
1067 (flags & RT2560_TX_RESULT_MASK) &~
1068 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
1069 m_freem(m);
1070 ieee80211_free_node(ni);
1071 }
1072
1073 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1074 BUS_DMASYNC_PREWRITE);
1075
1076 sc->sc_tx_timer = 0;
1077 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1078 rt2560_start(ifp);
1079}
1080
1081/*
1082 * Some frames were processed by the hardware cipher engine and are ready for
1083 * transmission to the IEEE802.11 layer.
1084 */
1085static void
1086rt2560_decryption_intr(struct rt2560_softc *sc)
1087{
1088 struct ieee80211com *ic = &sc->sc_ic;
1089 struct ifnet *ifp = ic->ic_ifp;
1090 struct rt2560_rx_desc *desc;
1091 struct rt2560_rx_data *data;
1092 bus_addr_t physaddr;
1093 struct ieee80211_frame *wh;
1094 struct ieee80211_node *ni;
1095 struct rt2560_node *rn;
1096 struct mbuf *mnew, *m;
1097 int hw, error;
1098
1099 /* retrieve last decriptor index processed by cipher engine */
1100 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1101 hw /= RT2560_RX_DESC_SIZE;
1102
1103 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1104 BUS_DMASYNC_POSTREAD);
1105
1106 for (; sc->rxq.cur_decrypt != hw;) {
1107 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1108 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1109
1110 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1111 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1112 break;
1113
1114 if (data->drop) {
1115 ifp->if_ierrors++;
1116 goto skip;
1117 }
1118
1119 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1120 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1121 ifp->if_ierrors++;
1122 goto skip;
1123 }
1124
1125 /*
1126 * Try to allocate a new mbuf for this ring element and load it
1127 * before processing the current mbuf. If the ring element
1128 * cannot be loaded, drop the received packet and reuse the old
1129 * mbuf. In the unlikely case that the old mbuf can't be
1130 * reloaded either, explicitly panic.
1131 */
1132 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1133 if (mnew == NULL) {
1134 ifp->if_ierrors++;
1135 goto skip;
1136 }
1137
1138 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1139 BUS_DMASYNC_POSTREAD);
1140 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1141
1142 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1143 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1144 &physaddr, 0);
1145 if (error != 0) {
1146 m_freem(mnew);
1147
1148 /* try to reload the old mbuf */
1149 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1150 mtod(data->m, void *), MCLBYTES,
1151 rt2560_dma_map_addr, &physaddr, 0);
1152 if (error != 0) {
1153 /* very unlikely that it will fail... */
1154 panic("%s: could not load old rx mbuf",
1155 device_get_name(sc->sc_dev));
1156 }
1157 ifp->if_ierrors++;
1158 goto skip;
1159 }
1160
1161 /*
1162 * New mbuf successfully loaded, update Rx ring and continue
1163 * processing.
1164 */
1165 m = data->m;
1166 data->m = mnew;
1167 desc->physaddr = htole32(physaddr);
1168
1169 /* finalize mbuf */
1170 m->m_pkthdr.rcvif = ifp;
1171 m->m_pkthdr.len = m->m_len =
1172 (le32toh(desc->flags) >> 16) & 0xfff;
1173
1174 if (bpf_peers_present(sc->sc_drvbpf)) {
1175 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1176 uint32_t tsf_lo, tsf_hi;
1177
1178 /* get timestamp (low and high 32 bits) */
1179 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1180 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1181
1182 tap->wr_tsf =
1183 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1184 tap->wr_flags = 0;
1185 tap->wr_rate = rt2560_rxrate(desc);
1186 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1187 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1188 tap->wr_antenna = sc->rx_ant;
1189 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1190
1191 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1192 }
1193
1194 sc->sc_flags |= RAL_INPUT_RUNNING;
1195 RAL_UNLOCK(sc);
1196 wh = mtod(m, struct ieee80211_frame *);
1197 ni = ieee80211_find_rxnode(ic,
1198 (struct ieee80211_frame_min *)wh);
1199
1200 /* send the frame to the 802.11 layer */
1201 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi),
1202 RT2560_NOISE_FLOOR, 0);
1203
1204 /* give rssi to the rate adatation algorithm */
1205 rn = (struct rt2560_node *)ni;
1206 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1207 RT2560_RSSI(sc, desc->rssi));
1208
1209 /* node is no longer needed */
1210 ieee80211_free_node(ni);
1211
1212 RAL_LOCK(sc);
1213 sc->sc_flags &= ~RAL_INPUT_RUNNING;
1214skip: desc->flags = htole32(RT2560_RX_BUSY);
1215
1216 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1217
1218 sc->rxq.cur_decrypt =
1219 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1220 }
1221
1222 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1223 BUS_DMASYNC_PREWRITE);
1224}
1225
1226/*
1227 * Some frames were received. Pass them to the hardware cipher engine before
1228 * sending them to the 802.11 layer.
1229 */
1230static void
1231rt2560_rx_intr(struct rt2560_softc *sc)
1232{
1233 struct rt2560_rx_desc *desc;
1234 struct rt2560_rx_data *data;
1235
1236 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1237 BUS_DMASYNC_POSTREAD);
1238
1239 for (;;) {
1240 desc = &sc->rxq.desc[sc->rxq.cur];
1241 data = &sc->rxq.data[sc->rxq.cur];
1242
1243 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1244 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1245 break;
1246
1247 data->drop = 0;
1248
1249 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1250 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1251 /*
1252 * This should not happen since we did not request
1253 * to receive those frames when we filled RXCSR0.
1254 */
1255 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1256 le32toh(desc->flags)));
1257 data->drop = 1;
1258 }
1259
1260 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1261 DPRINTFN(5, ("bad length\n"));
1262 data->drop = 1;
1263 }
1264
1265 /* mark the frame for decryption */
1266 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1267
1268 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1269
1270 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1271 }
1272
1273 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1274 BUS_DMASYNC_PREWRITE);
1275
1276 /* kick decrypt */
1277 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1278}
1279
| 786 if (m == NULL) {
787 device_printf(sc->sc_dev,
788 "could not allocate beacon\n");
789 error = ENOBUFS;
790 break;
791 }
792
793 ieee80211_ref_node(ni);
794 error = rt2560_tx_bcn(sc, m, ni);
795 if (error != 0)
796 break;
797 }
798
799 /* turn assocation led on */
800 rt2560_update_led(sc, 1, 0);
801
802 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
803 callout_reset(&sc->rssadapt_ch, hz / 10,
804 rt2560_update_rssadapt, sc);
805
806 rt2560_enable_tsf_sync(sc);
807 }
808 break;
809 case IEEE80211_S_SCAN:
810 case IEEE80211_S_AUTH:
811 case IEEE80211_S_ASSOC:
812 default:
813 break;
814 }
815
816 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
817}
818
819/*
820 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
821 * 93C66).
822 */
823static uint16_t
824rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr)
825{
826 uint32_t tmp;
827 uint16_t val;
828 int n;
829
830 /* clock C once before the first command */
831 RT2560_EEPROM_CTL(sc, 0);
832
833 RT2560_EEPROM_CTL(sc, RT2560_S);
834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
835 RT2560_EEPROM_CTL(sc, RT2560_S);
836
837 /* write start bit (1) */
838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
840
841 /* write READ opcode (10) */
842 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D);
843 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C);
844 RT2560_EEPROM_CTL(sc, RT2560_S);
845 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
846
847 /* write address (A5-A0 or A7-A0) */
848 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7;
849 for (; n >= 0; n--) {
850 RT2560_EEPROM_CTL(sc, RT2560_S |
851 (((addr >> n) & 1) << RT2560_SHIFT_D));
852 RT2560_EEPROM_CTL(sc, RT2560_S |
853 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C);
854 }
855
856 RT2560_EEPROM_CTL(sc, RT2560_S);
857
858 /* read data Q15-Q0 */
859 val = 0;
860 for (n = 15; n >= 0; n--) {
861 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C);
862 tmp = RAL_READ(sc, RT2560_CSR21);
863 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n;
864 RT2560_EEPROM_CTL(sc, RT2560_S);
865 }
866
867 RT2560_EEPROM_CTL(sc, 0);
868
869 /* clear Chip Select and clock C */
870 RT2560_EEPROM_CTL(sc, RT2560_S);
871 RT2560_EEPROM_CTL(sc, 0);
872 RT2560_EEPROM_CTL(sc, RT2560_C);
873
874 return val;
875}
876
877/*
878 * Some frames were processed by the hardware cipher engine and are ready for
879 * transmission.
880 */
881static void
882rt2560_encryption_intr(struct rt2560_softc *sc)
883{
884 struct rt2560_tx_desc *desc;
885 int hw;
886
887 /* retrieve last descriptor index processed by cipher engine */
888 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr;
889 hw /= RT2560_TX_DESC_SIZE;
890
891 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
892 BUS_DMASYNC_POSTREAD);
893
894 for (; sc->txq.next_encrypt != hw;) {
895 desc = &sc->txq.desc[sc->txq.next_encrypt];
896
897 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
898 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY))
899 break;
900
901 /* for TKIP, swap eiv field to fix a bug in ASIC */
902 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) ==
903 RT2560_TX_CIPHER_TKIP)
904 desc->eiv = bswap32(desc->eiv);
905
906 /* mark the frame ready for transmission */
907 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
908
909 DPRINTFN(15, ("encryption done idx=%u\n",
910 sc->txq.next_encrypt));
911
912 sc->txq.next_encrypt =
913 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT;
914 }
915
916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
917 BUS_DMASYNC_PREWRITE);
918
919 /* kick Tx */
920 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX);
921}
922
923static void
924rt2560_tx_intr(struct rt2560_softc *sc)
925{
926 struct ieee80211com *ic = &sc->sc_ic;
927 struct ifnet *ifp = ic->ic_ifp;
928 struct rt2560_tx_desc *desc;
929 struct rt2560_tx_data *data;
930 struct rt2560_node *rn;
931
932 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
933 BUS_DMASYNC_POSTREAD);
934
935 for (;;) {
936 desc = &sc->txq.desc[sc->txq.next];
937 data = &sc->txq.data[sc->txq.next];
938
939 if ((le32toh(desc->flags) & RT2560_TX_BUSY) ||
940 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY) ||
941 !(le32toh(desc->flags) & RT2560_TX_VALID))
942 break;
943
944 rn = (struct rt2560_node *)data->ni;
945
946 switch (le32toh(desc->flags) & RT2560_TX_RESULT_MASK) {
947 case RT2560_TX_SUCCESS:
948 DPRINTFN(10, ("data frame sent successfully\n"));
949 if (data->id.id_node != NULL) {
950 ral_rssadapt_raise_rate(ic, &rn->rssadapt,
951 &data->id);
952 }
953 ifp->if_opackets++;
954 break;
955
956 case RT2560_TX_SUCCESS_RETRY:
957 DPRINTFN(9, ("data frame sent after %u retries\n",
958 (le32toh(desc->flags) >> 5) & 0x7));
959 ifp->if_opackets++;
960 break;
961
962 case RT2560_TX_FAIL_RETRY:
963 DPRINTFN(9, ("sending data frame failed (too much "
964 "retries)\n"));
965 if (data->id.id_node != NULL) {
966 ral_rssadapt_lower_rate(ic, data->ni,
967 &rn->rssadapt, &data->id);
968 }
969 ifp->if_oerrors++;
970 break;
971
972 case RT2560_TX_FAIL_INVALID:
973 case RT2560_TX_FAIL_OTHER:
974 default:
975 device_printf(sc->sc_dev, "sending data frame failed "
976 "0x%08x\n", le32toh(desc->flags));
977 ifp->if_oerrors++;
978 }
979
980 bus_dmamap_sync(sc->txq.data_dmat, data->map,
981 BUS_DMASYNC_POSTWRITE);
982 bus_dmamap_unload(sc->txq.data_dmat, data->map);
983 m_freem(data->m);
984 data->m = NULL;
985 ieee80211_free_node(data->ni);
986 data->ni = NULL;
987
988 /* descriptor is no longer valid */
989 desc->flags &= ~htole32(RT2560_TX_VALID);
990
991 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
992
993 sc->txq.queued--;
994 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT;
995 }
996
997 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
998 BUS_DMASYNC_PREWRITE);
999
1000 sc->sc_tx_timer = 0;
1001 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1002 rt2560_start(ifp);
1003}
1004
1005static void
1006rt2560_prio_intr(struct rt2560_softc *sc)
1007{
1008 struct ieee80211com *ic = &sc->sc_ic;
1009 struct ifnet *ifp = ic->ic_ifp;
1010 struct rt2560_tx_desc *desc;
1011 struct rt2560_tx_data *data;
1012 struct ieee80211_node *ni;
1013 struct mbuf *m;
1014 int flags;
1015
1016 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1017 BUS_DMASYNC_POSTREAD);
1018
1019 for (;;) {
1020 desc = &sc->prioq.desc[sc->prioq.next];
1021 data = &sc->prioq.data[sc->prioq.next];
1022
1023 flags = le32toh(desc->flags);
1024 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0)
1025 break;
1026
1027 switch (flags & RT2560_TX_RESULT_MASK) {
1028 case RT2560_TX_SUCCESS:
1029 DPRINTFN(10, ("mgt frame sent successfully\n"));
1030 break;
1031
1032 case RT2560_TX_SUCCESS_RETRY:
1033 DPRINTFN(9, ("mgt frame sent after %u retries\n",
1034 (flags >> 5) & 0x7));
1035 break;
1036
1037 case RT2560_TX_FAIL_RETRY:
1038 DPRINTFN(9, ("sending mgt frame failed (too much "
1039 "retries)\n"));
1040 break;
1041
1042 case RT2560_TX_FAIL_INVALID:
1043 case RT2560_TX_FAIL_OTHER:
1044 default:
1045 device_printf(sc->sc_dev, "sending mgt frame failed "
1046 "0x%08x\n", flags);
1047 break;
1048 }
1049
1050 bus_dmamap_sync(sc->prioq.data_dmat, data->map,
1051 BUS_DMASYNC_POSTWRITE);
1052 bus_dmamap_unload(sc->prioq.data_dmat, data->map);
1053
1054 m = data->m;
1055 data->m = NULL;
1056 ni = data->ni;
1057 data->ni = NULL;
1058
1059 /* descriptor is no longer valid */
1060 desc->flags &= ~htole32(RT2560_TX_VALID);
1061
1062 DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
1063
1064 sc->prioq.queued--;
1065 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT;
1066
1067 if (m->m_flags & M_TXCB)
1068 ieee80211_process_callback(ni, m,
1069 (flags & RT2560_TX_RESULT_MASK) &~
1070 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY));
1071 m_freem(m);
1072 ieee80211_free_node(ni);
1073 }
1074
1075 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1076 BUS_DMASYNC_PREWRITE);
1077
1078 sc->sc_tx_timer = 0;
1079 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1080 rt2560_start(ifp);
1081}
1082
1083/*
1084 * Some frames were processed by the hardware cipher engine and are ready for
1085 * transmission to the IEEE802.11 layer.
1086 */
1087static void
1088rt2560_decryption_intr(struct rt2560_softc *sc)
1089{
1090 struct ieee80211com *ic = &sc->sc_ic;
1091 struct ifnet *ifp = ic->ic_ifp;
1092 struct rt2560_rx_desc *desc;
1093 struct rt2560_rx_data *data;
1094 bus_addr_t physaddr;
1095 struct ieee80211_frame *wh;
1096 struct ieee80211_node *ni;
1097 struct rt2560_node *rn;
1098 struct mbuf *mnew, *m;
1099 int hw, error;
1100
1101 /* retrieve last decriptor index processed by cipher engine */
1102 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr;
1103 hw /= RT2560_RX_DESC_SIZE;
1104
1105 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1106 BUS_DMASYNC_POSTREAD);
1107
1108 for (; sc->rxq.cur_decrypt != hw;) {
1109 desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
1110 data = &sc->rxq.data[sc->rxq.cur_decrypt];
1111
1112 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1113 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1114 break;
1115
1116 if (data->drop) {
1117 ifp->if_ierrors++;
1118 goto skip;
1119 }
1120
1121 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 &&
1122 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) {
1123 ifp->if_ierrors++;
1124 goto skip;
1125 }
1126
1127 /*
1128 * Try to allocate a new mbuf for this ring element and load it
1129 * before processing the current mbuf. If the ring element
1130 * cannot be loaded, drop the received packet and reuse the old
1131 * mbuf. In the unlikely case that the old mbuf can't be
1132 * reloaded either, explicitly panic.
1133 */
1134 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1135 if (mnew == NULL) {
1136 ifp->if_ierrors++;
1137 goto skip;
1138 }
1139
1140 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1141 BUS_DMASYNC_POSTREAD);
1142 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1143
1144 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1145 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr,
1146 &physaddr, 0);
1147 if (error != 0) {
1148 m_freem(mnew);
1149
1150 /* try to reload the old mbuf */
1151 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1152 mtod(data->m, void *), MCLBYTES,
1153 rt2560_dma_map_addr, &physaddr, 0);
1154 if (error != 0) {
1155 /* very unlikely that it will fail... */
1156 panic("%s: could not load old rx mbuf",
1157 device_get_name(sc->sc_dev));
1158 }
1159 ifp->if_ierrors++;
1160 goto skip;
1161 }
1162
1163 /*
1164 * New mbuf successfully loaded, update Rx ring and continue
1165 * processing.
1166 */
1167 m = data->m;
1168 data->m = mnew;
1169 desc->physaddr = htole32(physaddr);
1170
1171 /* finalize mbuf */
1172 m->m_pkthdr.rcvif = ifp;
1173 m->m_pkthdr.len = m->m_len =
1174 (le32toh(desc->flags) >> 16) & 0xfff;
1175
1176 if (bpf_peers_present(sc->sc_drvbpf)) {
1177 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap;
1178 uint32_t tsf_lo, tsf_hi;
1179
1180 /* get timestamp (low and high 32 bits) */
1181 tsf_hi = RAL_READ(sc, RT2560_CSR17);
1182 tsf_lo = RAL_READ(sc, RT2560_CSR16);
1183
1184 tap->wr_tsf =
1185 htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
1186 tap->wr_flags = 0;
1187 tap->wr_rate = rt2560_rxrate(desc);
1188 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
1189 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
1190 tap->wr_antenna = sc->rx_ant;
1191 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi);
1192
1193 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
1194 }
1195
1196 sc->sc_flags |= RAL_INPUT_RUNNING;
1197 RAL_UNLOCK(sc);
1198 wh = mtod(m, struct ieee80211_frame *);
1199 ni = ieee80211_find_rxnode(ic,
1200 (struct ieee80211_frame_min *)wh);
1201
1202 /* send the frame to the 802.11 layer */
1203 ieee80211_input(ic, m, ni, RT2560_RSSI(sc, desc->rssi),
1204 RT2560_NOISE_FLOOR, 0);
1205
1206 /* give rssi to the rate adatation algorithm */
1207 rn = (struct rt2560_node *)ni;
1208 ral_rssadapt_input(ic, ni, &rn->rssadapt,
1209 RT2560_RSSI(sc, desc->rssi));
1210
1211 /* node is no longer needed */
1212 ieee80211_free_node(ni);
1213
1214 RAL_LOCK(sc);
1215 sc->sc_flags &= ~RAL_INPUT_RUNNING;
1216skip: desc->flags = htole32(RT2560_RX_BUSY);
1217
1218 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
1219
1220 sc->rxq.cur_decrypt =
1221 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT;
1222 }
1223
1224 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1225 BUS_DMASYNC_PREWRITE);
1226}
1227
1228/*
1229 * Some frames were received. Pass them to the hardware cipher engine before
1230 * sending them to the 802.11 layer.
1231 */
1232static void
1233rt2560_rx_intr(struct rt2560_softc *sc)
1234{
1235 struct rt2560_rx_desc *desc;
1236 struct rt2560_rx_data *data;
1237
1238 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1239 BUS_DMASYNC_POSTREAD);
1240
1241 for (;;) {
1242 desc = &sc->rxq.desc[sc->rxq.cur];
1243 data = &sc->rxq.data[sc->rxq.cur];
1244
1245 if ((le32toh(desc->flags) & RT2560_RX_BUSY) ||
1246 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY))
1247 break;
1248
1249 data->drop = 0;
1250
1251 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) ||
1252 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) {
1253 /*
1254 * This should not happen since we did not request
1255 * to receive those frames when we filled RXCSR0.
1256 */
1257 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
1258 le32toh(desc->flags)));
1259 data->drop = 1;
1260 }
1261
1262 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
1263 DPRINTFN(5, ("bad length\n"));
1264 data->drop = 1;
1265 }
1266
1267 /* mark the frame for decryption */
1268 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY);
1269
1270 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1271
1272 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT;
1273 }
1274
1275 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
1276 BUS_DMASYNC_PREWRITE);
1277
1278 /* kick decrypt */
1279 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT);
1280}
1281
|
1305
1306 if (bpf_peers_present(ic->ic_rawbpf))
1307 bpf_mtap(ic->ic_rawbpf, data->m);
1308
1309 rt2560_tx_bcn(sc, data->m, data->ni);
1310
1311 DPRINTFN(15, ("beacon expired\n"));
1312
1313 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1314}
1315
1316/* ARGSUSED */
1317static void
1318rt2560_wakeup_expire(struct rt2560_softc *sc)
1319{
1320 DPRINTFN(2, ("wakeup expired\n"));
1321}
1322
1323void
1324rt2560_intr(void *arg)
1325{
1326 struct rt2560_softc *sc = arg;
1327 struct ifnet *ifp = sc->sc_ifp;
1328 uint32_t r;
1329
1330 RAL_LOCK(sc);
1331
1332 /* disable interrupts */
1333 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1334
1335 /* don't re-enable interrupts if we're shutting down */
1336 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1337 RAL_UNLOCK(sc);
1338 return;
1339 }
1340
1341 r = RAL_READ(sc, RT2560_CSR7);
1342 RAL_WRITE(sc, RT2560_CSR7, r);
1343
1344 if (r & RT2560_BEACON_EXPIRE)
1345 rt2560_beacon_expire(sc);
1346
1347 if (r & RT2560_WAKEUP_EXPIRE)
1348 rt2560_wakeup_expire(sc);
1349
1350 if (r & RT2560_ENCRYPTION_DONE)
1351 rt2560_encryption_intr(sc);
1352
1353 if (r & RT2560_TX_DONE)
1354 rt2560_tx_intr(sc);
1355
1356 if (r & RT2560_PRIO_DONE)
1357 rt2560_prio_intr(sc);
1358
1359 if (r & RT2560_DECRYPTION_DONE)
1360 rt2560_decryption_intr(sc);
1361
1362 if (r & RT2560_RX_DONE)
1363 rt2560_rx_intr(sc);
1364
1365 /* re-enable interrupts */
1366 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1367
1368 RAL_UNLOCK(sc);
1369}
1370
1371/* quickly determine if a given rate is CCK or OFDM */
1372#define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1373
1374#define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1375#define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1376
1377#define RAL_SIFS 10 /* us */
1378
1379#define RT2560_TXRX_TURNAROUND 10 /* us */
1380
1381/*
1382 * This function is only used by the Rx radiotap code.
1383 */
1384static uint8_t
1385rt2560_rxrate(struct rt2560_rx_desc *desc)
1386{
1387 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1388 /* reverse function of rt2560_plcp_signal */
1389 switch (desc->rate) {
1390 case 0xb: return 12;
1391 case 0xf: return 18;
1392 case 0xa: return 24;
1393 case 0xe: return 36;
1394 case 0x9: return 48;
1395 case 0xd: return 72;
1396 case 0x8: return 96;
1397 case 0xc: return 108;
1398 }
1399 } else {
1400 if (desc->rate == 10)
1401 return 2;
1402 if (desc->rate == 20)
1403 return 4;
1404 if (desc->rate == 55)
1405 return 11;
1406 if (desc->rate == 110)
1407 return 22;
1408 }
1409 return 2; /* should not get there */
1410}
1411
1412/*
1413 * Return the expected ack rate for a frame transmitted at rate `rate'.
1414 * XXX: this should depend on the destination node basic rate set.
1415 */
1416static int
1417rt2560_ack_rate(struct ieee80211com *ic, int rate)
1418{
1419 switch (rate) {
1420 /* CCK rates */
1421 case 2:
1422 return 2;
1423 case 4:
1424 case 11:
1425 case 22:
1426 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1427
1428 /* OFDM rates */
1429 case 12:
1430 case 18:
1431 return 12;
1432 case 24:
1433 case 36:
1434 return 24;
1435 case 48:
1436 case 72:
1437 case 96:
1438 case 108:
1439 return 48;
1440 }
1441
1442 /* default to 1Mbps */
1443 return 2;
1444}
1445
1446/*
1447 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1448 * The function automatically determines the operating mode depending on the
1449 * given rate. `flags' indicates whether short preamble is in use or not.
1450 */
1451static uint16_t
1452rt2560_txtime(int len, int rate, uint32_t flags)
1453{
1454 uint16_t txtime;
1455
1456 if (RAL_RATE_IS_OFDM(rate)) {
1457 /* IEEE Std 802.11a-1999, pp. 37 */
1458 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1459 txtime = 16 + 4 + 4 * txtime + 6;
1460 } else {
1461 /* IEEE Std 802.11b-1999, pp. 28 */
1462 txtime = (16 * len + rate - 1) / rate;
1463 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1464 txtime += 72 + 24;
1465 else
1466 txtime += 144 + 48;
1467 }
1468
1469 return txtime;
1470}
1471
1472static uint8_t
1473rt2560_plcp_signal(int rate)
1474{
1475 switch (rate) {
1476 /* CCK rates (returned values are device-dependent) */
1477 case 2: return 0x0;
1478 case 4: return 0x1;
1479 case 11: return 0x2;
1480 case 22: return 0x3;
1481
1482 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1483 case 12: return 0xb;
1484 case 18: return 0xf;
1485 case 24: return 0xa;
1486 case 36: return 0xe;
1487 case 48: return 0x9;
1488 case 72: return 0xd;
1489 case 96: return 0x8;
1490 case 108: return 0xc;
1491
1492 /* unsupported rates (should not get there) */
1493 default: return 0xff;
1494 }
1495}
1496
1497static void
1498rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1499 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1500{
1501 struct ieee80211com *ic = &sc->sc_ic;
1502 uint16_t plcp_length;
1503 int remainder;
1504
1505 desc->flags = htole32(flags);
1506 desc->flags |= htole32(len << 16);
1507 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1508 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1509
1510 desc->physaddr = htole32(physaddr);
1511 desc->wme = htole16(
1512 RT2560_AIFSN(2) |
1513 RT2560_LOGCWMIN(3) |
1514 RT2560_LOGCWMAX(8));
1515
1516 /* setup PLCP fields */
1517 desc->plcp_signal = rt2560_plcp_signal(rate);
1518 desc->plcp_service = 4;
1519
1520 len += IEEE80211_CRC_LEN;
1521 if (RAL_RATE_IS_OFDM(rate)) {
1522 desc->flags |= htole32(RT2560_TX_OFDM);
1523
1524 plcp_length = len & 0xfff;
1525 desc->plcp_length_hi = plcp_length >> 6;
1526 desc->plcp_length_lo = plcp_length & 0x3f;
1527 } else {
1528 plcp_length = (16 * len + rate - 1) / rate;
1529 if (rate == 22) {
1530 remainder = (16 * len) % 22;
1531 if (remainder != 0 && remainder < 7)
1532 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1533 }
1534 desc->plcp_length_hi = plcp_length >> 8;
1535 desc->plcp_length_lo = plcp_length & 0xff;
1536
1537 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1538 desc->plcp_signal |= 0x08;
1539 }
1540}
1541
1542static int
1543rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1544 struct ieee80211_node *ni)
1545{
1546 struct ieee80211com *ic = &sc->sc_ic;
1547 struct rt2560_tx_desc *desc;
1548 struct rt2560_tx_data *data;
1549 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1550 int nsegs, rate, error;
1551
1552 desc = &sc->bcnq.desc[sc->bcnq.cur];
1553 data = &sc->bcnq.data[sc->bcnq.cur];
1554
1555 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1556
1557 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1558 segs, &nsegs, BUS_DMA_NOWAIT);
1559 if (error != 0) {
1560 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1561 error);
1562 m_freem(m0);
1563 return error;
1564 }
1565
1566 if (bpf_peers_present(sc->sc_drvbpf)) {
1567 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1568
1569 tap->wt_flags = 0;
1570 tap->wt_rate = rate;
1571 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1572 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1573 tap->wt_antenna = sc->tx_ant;
1574
1575 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1576 }
1577
1578 data->m = m0;
1579 data->ni = ni;
1580
1581 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1582 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1583
1584 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1585 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1586
1587 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1588 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1589 BUS_DMASYNC_PREWRITE);
1590
1591 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1592
1593 return 0;
1594}
1595
1596static int
1597rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1598 struct ieee80211_node *ni)
1599{
1600 struct ieee80211com *ic = &sc->sc_ic;
1601 struct rt2560_tx_desc *desc;
1602 struct rt2560_tx_data *data;
1603 struct ieee80211_frame *wh;
1604 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1605 uint16_t dur;
1606 uint32_t flags = 0;
1607 int nsegs, rate, error;
1608
1609 desc = &sc->prioq.desc[sc->prioq.cur];
1610 data = &sc->prioq.data[sc->prioq.cur];
1611
1612 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1613
1614 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1615 segs, &nsegs, 0);
1616 if (error != 0) {
1617 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1618 error);
1619 m_freem(m0);
1620 return error;
1621 }
1622
1623 if (bpf_peers_present(sc->sc_drvbpf)) {
1624 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1625
1626 tap->wt_flags = 0;
1627 tap->wt_rate = rate;
1628 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1629 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1630 tap->wt_antenna = sc->tx_ant;
1631
1632 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1633 }
1634
1635 data->m = m0;
1636 data->ni = ni;
1637
1638 wh = mtod(m0, struct ieee80211_frame *);
1639
1640 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1641 flags |= RT2560_TX_ACK;
1642
1643 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1644 RAL_SIFS;
1645 *(uint16_t *)wh->i_dur = htole16(dur);
1646
1647 /* tell hardware to add timestamp for probe responses */
1648 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1649 IEEE80211_FC0_TYPE_MGT &&
1650 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1651 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1652 flags |= RT2560_TX_TIMESTAMP;
1653 }
1654
1655 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1656 segs->ds_addr);
1657
1658 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1659 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1660 BUS_DMASYNC_PREWRITE);
1661
1662 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1663 m0->m_pkthdr.len, sc->prioq.cur, rate));
1664
1665 /* kick prio */
1666 sc->prioq.queued++;
1667 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1668 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1669
1670 return 0;
1671}
1672
1673static int
1674rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1675 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1676{
1677 struct ieee80211com *ic = &sc->sc_ic;
1678 struct rt2560_tx_desc *desc;
1679 struct rt2560_tx_data *data;
1680 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1681 uint32_t flags;
1682 int nsegs, rate, error;
1683
1684 desc = &sc->prioq.desc[sc->prioq.cur];
1685 data = &sc->prioq.data[sc->prioq.cur];
1686
1687 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1688 /* XXX validate */
1689 if (rate == 0) {
1690 m_freem(m0);
1691 return EINVAL;
1692 }
1693
1694 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1695 segs, &nsegs, 0);
1696 if (error != 0) {
1697 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1698 error);
1699 m_freem(m0);
1700 return error;
1701 }
1702
1703 if (bpf_peers_present(sc->sc_drvbpf)) {
1704 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1705
1706 tap->wt_flags = 0;
1707 tap->wt_rate = rate;
1708 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1709 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1710 tap->wt_antenna = sc->tx_ant;
1711
1712 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1713 }
1714
1715 data->m = m0;
1716 data->ni = ni;
1717
1718 flags = 0;
1719 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1720 flags |= RT2560_TX_ACK;
1721
1722 /* XXX need to setup descriptor ourself */
1723 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1724 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1725 segs->ds_addr);
1726
1727 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1728 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1729 BUS_DMASYNC_PREWRITE);
1730
1731 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1732 m0->m_pkthdr.len, sc->prioq.cur, rate));
1733
1734 /* kick prio */
1735 sc->prioq.queued++;
1736 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1737 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1738
1739 return 0;
1740}
1741
1742/*
1743 * Build a RTS control frame.
1744 */
1745static struct mbuf *
1746rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1747 uint16_t dur)
1748{
1749 struct ieee80211_frame_rts *rts;
1750 struct mbuf *m;
1751
1752 MGETHDR(m, M_DONTWAIT, MT_DATA);
1753 if (m == NULL) {
1754 sc->sc_ic.ic_stats.is_tx_nobuf++;
1755 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1756 return NULL;
1757 }
1758
1759 rts = mtod(m, struct ieee80211_frame_rts *);
1760
1761 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1762 IEEE80211_FC0_SUBTYPE_RTS;
1763 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1764 *(uint16_t *)rts->i_dur = htole16(dur);
1765 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1766 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1767
1768 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1769
1770 return m;
1771}
1772
1773static int
1774rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1775 struct ieee80211_node *ni)
1776{
1777 struct ieee80211com *ic = &sc->sc_ic;
1778 struct rt2560_tx_desc *desc;
1779 struct rt2560_tx_data *data;
1780 struct rt2560_node *rn;
1781 struct ieee80211_frame *wh;
1782 struct ieee80211_key *k;
1783 struct mbuf *mnew;
1784 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1785 uint16_t dur;
1786 uint32_t flags = 0;
1787 int nsegs, rate, error;
1788
1789 wh = mtod(m0, struct ieee80211_frame *);
1790
1791 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1792 rate = ic->ic_fixed_rate;
1793 } else {
1794 struct ieee80211_rateset *rs;
1795
1796 rs = &ni->ni_rates;
1797 rn = (struct rt2560_node *)ni;
1798 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1799 m0->m_pkthdr.len, NULL, 0);
1800 rate = rs->rs_rates[ni->ni_txrate];
1801 }
1802 rate &= IEEE80211_RATE_VAL;
1803
1804 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1805 k = ieee80211_crypto_encap(ic, ni, m0);
1806 if (k == NULL) {
1807 m_freem(m0);
1808 return ENOBUFS;
1809 }
1810
1811 /* packet header may have moved, reset our local pointer */
1812 wh = mtod(m0, struct ieee80211_frame *);
1813 }
1814
1815 /*
1816 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1817 * for directed frames only when the length of the MPDU is greater
1818 * than the length threshold indicated by [...]" ic_rtsthreshold.
1819 */
1820 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1821 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1822 struct mbuf *m;
1823 uint16_t dur;
1824 int rtsrate, ackrate;
1825
1826 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1827 ackrate = rt2560_ack_rate(ic, rate);
1828
1829 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1830 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1831 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1832 3 * RAL_SIFS;
1833
1834 m = rt2560_get_rts(sc, wh, dur);
1835
1836 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1837 data = &sc->txq.data[sc->txq.cur_encrypt];
1838
1839 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1840 m, segs, &nsegs, 0);
1841 if (error != 0) {
1842 device_printf(sc->sc_dev,
1843 "could not map mbuf (error %d)\n", error);
1844 m_freem(m);
1845 m_freem(m0);
1846 return error;
1847 }
1848
1849 /* avoid multiple free() of the same node for each fragment */
1850 ieee80211_ref_node(ni);
1851
1852 data->m = m;
1853 data->ni = ni;
1854
1855 /* RTS frames are not taken into account for rssadapt */
1856 data->id.id_node = NULL;
1857
1858 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1859 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1860 segs->ds_addr);
1861
1862 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1863 BUS_DMASYNC_PREWRITE);
1864
1865 sc->txq.queued++;
1866 sc->txq.cur_encrypt =
1867 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1868
1869 /*
1870 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1871 * asynchronous data frame shall be transmitted after the CTS
1872 * frame and a SIFS period.
1873 */
1874 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1875 }
1876
1877 data = &sc->txq.data[sc->txq.cur_encrypt];
1878 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1879
1880 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1881 segs, &nsegs, 0);
1882 if (error != 0 && error != EFBIG) {
1883 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1884 error);
1885 m_freem(m0);
1886 return error;
1887 }
1888 if (error != 0) {
1889 mnew = m_defrag(m0, M_DONTWAIT);
1890 if (mnew == NULL) {
1891 device_printf(sc->sc_dev,
1892 "could not defragment mbuf\n");
1893 m_freem(m0);
1894 return ENOBUFS;
1895 }
1896 m0 = mnew;
1897
1898 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1899 m0, segs, &nsegs, 0);
1900 if (error != 0) {
1901 device_printf(sc->sc_dev,
1902 "could not map mbuf (error %d)\n", error);
1903 m_freem(m0);
1904 return error;
1905 }
1906
1907 /* packet header may have moved, reset our local pointer */
1908 wh = mtod(m0, struct ieee80211_frame *);
1909 }
1910
1911 if (bpf_peers_present(sc->sc_drvbpf)) {
1912 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1913
1914 tap->wt_flags = 0;
1915 tap->wt_rate = rate;
1916 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1917 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1918 tap->wt_antenna = sc->tx_ant;
1919
1920 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1921 }
1922
1923 data->m = m0;
1924 data->ni = ni;
1925
1926 /* remember link conditions for rate adaptation algorithm */
1927 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1928 data->id.id_len = m0->m_pkthdr.len;
1929 data->id.id_rateidx = ni->ni_txrate;
1930 data->id.id_node = ni;
1931 data->id.id_rssi = ni->ni_rssi;
1932 } else
1933 data->id.id_node = NULL;
1934
1935 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1936 flags |= RT2560_TX_ACK;
1937
1938 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1939 ic->ic_flags) + RAL_SIFS;
1940 *(uint16_t *)wh->i_dur = htole16(dur);
1941 }
1942
1943 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1944 segs->ds_addr);
1945
1946 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1947 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1948 BUS_DMASYNC_PREWRITE);
1949
1950 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1951 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1952
1953 /* kick encrypt */
1954 sc->txq.queued++;
1955 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1956 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1957
1958 return 0;
1959}
1960
1961static void
1962rt2560_start(struct ifnet *ifp)
1963{
1964 struct rt2560_softc *sc = ifp->if_softc;
1965 struct ieee80211com *ic = &sc->sc_ic;
1966 struct mbuf *m0;
1967 struct ether_header *eh;
1968 struct ieee80211_node *ni;
1969
1970 RAL_LOCK(sc);
1971
1972 /* prevent management frames from being sent if we're not ready */
1973 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1974 RAL_UNLOCK(sc);
1975 return;
1976 }
1977
1978 for (;;) {
1979 IF_POLL(&ic->ic_mgtq, m0);
1980 if (m0 != NULL) {
1981 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1982 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1983 break;
1984 }
1985 IF_DEQUEUE(&ic->ic_mgtq, m0);
1986
1987 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1988 m0->m_pkthdr.rcvif = NULL;
1989
1990 if (bpf_peers_present(ic->ic_rawbpf))
1991 bpf_mtap(ic->ic_rawbpf, m0);
1992
1993 if (rt2560_tx_mgt(sc, m0, ni) != 0) {
1994 ieee80211_free_node(ni);
1995 break;
1996 }
1997 } else {
1998 if (ic->ic_state != IEEE80211_S_RUN)
1999 break;
2000 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2001 if (m0 == NULL)
2002 break;
2003 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2004 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2005 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2006 break;
2007 }
2008 /*
2009 * Cancel any background scan.
2010 */
2011 if (ic->ic_flags & IEEE80211_F_SCAN)
2012 ieee80211_cancel_scan(ic);
2013
2014 if (m0->m_len < sizeof (struct ether_header) &&
2015 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2016 continue;
2017
2018 eh = mtod(m0, struct ether_header *);
2019 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2020 if (ni == NULL) {
2021 m_freem(m0);
2022 continue;
2023 }
2024 if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) &&
2025 (m0->m_flags & M_PWR_SAV) == 0) {
2026 /*
2027 * Station in power save mode; pass the frame
2028 * to the 802.11 layer and continue. We'll get
2029 * the frame back when the time is right.
2030 */
2031 ieee80211_pwrsave(ni, m0);
2032 /*
2033 * If we're in power save mode 'cuz of a bg
2034 * scan cancel it so the traffic can flow.
2035 * The packet we just queued will automatically
2036 * get sent when we drop out of power save.
2037 * XXX locking
2038 */
2039 if (ic->ic_flags & IEEE80211_F_SCAN)
2040 ieee80211_cancel_scan(ic);
2041 ieee80211_free_node(ni);
2042 continue;
2043
2044 }
2045
2046 BPF_MTAP(ifp, m0);
2047
2048 m0 = ieee80211_encap(ic, m0, ni);
2049 if (m0 == NULL) {
2050 ieee80211_free_node(ni);
2051 continue;
2052 }
2053
2054 if (bpf_peers_present(ic->ic_rawbpf))
2055 bpf_mtap(ic->ic_rawbpf, m0);
2056
2057 if (rt2560_tx_data(sc, m0, ni) != 0) {
2058 ieee80211_free_node(ni);
2059 ifp->if_oerrors++;
2060 break;
2061 }
2062 }
2063
2064 sc->sc_tx_timer = 5;
2065 ic->ic_lastdata = ticks;
2066 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2067 }
2068
2069 RAL_UNLOCK(sc);
2070}
2071
2072static void
2073rt2560_watchdog(void *arg)
2074{
2075 struct rt2560_softc *sc = arg;
2076
2077 if (sc->sc_tx_timer > 0) {
2078 if (--sc->sc_tx_timer == 0) {
2079 device_printf(sc->sc_dev, "device timeout\n");
2080 rt2560_init(sc);
2081 sc->sc_ifp->if_oerrors++;
2082 return;
2083 }
2084 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2085 }
2086}
2087
2088/*
2089 * This function allows for fast channel switching in monitor mode (used by
2090 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2091 * generate a new beacon frame.
2092 */
2093static int
2094rt2560_reset(struct ifnet *ifp)
2095{
2096 struct rt2560_softc *sc = ifp->if_softc;
2097 struct ieee80211com *ic = &sc->sc_ic;
2098
2099 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2100 return ENETRESET;
2101
2102 rt2560_set_chan(sc, ic->ic_curchan);
2103
2104 return 0;
2105}
2106
2107static int
2108rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2109{
2110 struct rt2560_softc *sc = ifp->if_softc;
2111 struct ieee80211com *ic = &sc->sc_ic;
2112 int error = 0;
2113
2114
2115
2116 switch (cmd) {
2117 case SIOCSIFFLAGS:
2118 if (ifp->if_flags & IFF_UP) {
2119 RAL_LOCK(sc);
2120 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2121 rt2560_update_promisc(sc);
2122 else
2123 rt2560_init(sc);
2124 RAL_UNLOCK(sc);
2125 } else {
2126 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2127 rt2560_stop(sc);
2128 }
2129
2130 break;
2131
2132 default:
2133 error = ieee80211_ioctl(ic, cmd, data);
2134 }
2135
2136 if (error == ENETRESET) {
2137 if ((ifp->if_flags & IFF_UP) &&
2138 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2139 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2140 rt2560_init(sc);
2141 error = 0;
2142 }
2143
2144
2145 return error;
2146}
2147
2148static void
2149rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2150{
2151 uint32_t tmp;
2152 int ntries;
2153
2154 for (ntries = 0; ntries < 100; ntries++) {
2155 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2156 break;
2157 DELAY(1);
2158 }
2159 if (ntries == 100) {
2160 device_printf(sc->sc_dev, "could not write to BBP\n");
2161 return;
2162 }
2163
2164 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2165 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2166
2167 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2168}
2169
2170static uint8_t
2171rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2172{
2173 uint32_t val;
2174 int ntries;
2175
2176 val = RT2560_BBP_BUSY | reg << 8;
2177 RAL_WRITE(sc, RT2560_BBPCSR, val);
2178
2179 for (ntries = 0; ntries < 100; ntries++) {
2180 val = RAL_READ(sc, RT2560_BBPCSR);
2181 if (!(val & RT2560_BBP_BUSY))
2182 return val & 0xff;
2183 DELAY(1);
2184 }
2185
2186 device_printf(sc->sc_dev, "could not read from BBP\n");
2187 return 0;
2188}
2189
2190static void
2191rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2192{
2193 uint32_t tmp;
2194 int ntries;
2195
2196 for (ntries = 0; ntries < 100; ntries++) {
2197 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2198 break;
2199 DELAY(1);
2200 }
2201 if (ntries == 100) {
2202 device_printf(sc->sc_dev, "could not write to RF\n");
2203 return;
2204 }
2205
2206 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2207 (reg & 0x3);
2208 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2209
2210 /* remember last written value in sc */
2211 sc->rf_regs[reg] = val;
2212
2213 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2214}
2215
2216static void
2217rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2218{
2219 struct ieee80211com *ic = &sc->sc_ic;
2220 uint8_t power, tmp;
2221 u_int i, chan;
2222
2223 chan = ieee80211_chan2ieee(ic, c);
2224 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2225 return;
2226
2227 if (IEEE80211_IS_CHAN_2GHZ(c))
2228 power = min(sc->txpow[chan - 1], 31);
2229 else
2230 power = 31;
2231
2232 /* adjust txpower using ifconfig settings */
2233 power -= (100 - ic->ic_txpowlimit) / 8;
2234
2235 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2236
2237 switch (sc->rf_rev) {
2238 case RT2560_RF_2522:
2239 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2240 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2241 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2242 break;
2243
2244 case RT2560_RF_2523:
2245 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2246 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2247 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2248 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2249 break;
2250
2251 case RT2560_RF_2524:
2252 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2253 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2254 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2255 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2256 break;
2257
2258 case RT2560_RF_2525:
2259 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2260 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2261 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2262 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2263
2264 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2265 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2266 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2267 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2268 break;
2269
2270 case RT2560_RF_2525E:
2271 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2272 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2273 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2274 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2275 break;
2276
2277 case RT2560_RF_2526:
2278 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2279 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2280 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2281
2282 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2283 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2284 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2285 break;
2286
2287 /* dual-band RF */
2288 case RT2560_RF_5222:
2289 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2290
2291 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2292 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2293 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2294 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2295 break;
2296 default:
2297 printf("unknown ral rev=%d\n", sc->rf_rev);
2298 }
2299
2300 if (ic->ic_state != IEEE80211_S_SCAN) {
2301 /* set Japan filter bit for channel 14 */
2302 tmp = rt2560_bbp_read(sc, 70);
2303
2304 tmp &= ~RT2560_JAPAN_FILTER;
2305 if (chan == 14)
2306 tmp |= RT2560_JAPAN_FILTER;
2307
2308 rt2560_bbp_write(sc, 70, tmp);
2309
2310 /* clear CRC errors */
2311 RAL_READ(sc, RT2560_CNT0);
2312 }
2313}
2314
2315static void
2316rt2560_set_channel(struct ieee80211com *ic)
2317{
2318 struct ifnet *ifp = ic->ic_ifp;
2319 struct rt2560_softc *sc = ifp->if_softc;
2320
2321 RAL_LOCK(sc);
2322 rt2560_set_chan(sc, ic->ic_curchan);
2323 RAL_UNLOCK(sc);
2324
2325}
2326
2327#if 0
2328/*
2329 * Disable RF auto-tuning.
2330 */
2331static void
2332rt2560_disable_rf_tune(struct rt2560_softc *sc)
2333{
2334 uint32_t tmp;
2335
2336 if (sc->rf_rev != RT2560_RF_2523) {
2337 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2338 rt2560_rf_write(sc, RAL_RF1, tmp);
2339 }
2340
2341 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2342 rt2560_rf_write(sc, RAL_RF3, tmp);
2343
2344 DPRINTFN(2, ("disabling RF autotune\n"));
2345}
2346#endif
2347
2348/*
2349 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2350 * synchronization.
2351 */
2352static void
2353rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2354{
2355 struct ieee80211com *ic = &sc->sc_ic;
2356 uint16_t logcwmin, preload;
2357 uint32_t tmp;
2358
2359 /* first, disable TSF synchronization */
2360 RAL_WRITE(sc, RT2560_CSR14, 0);
2361
2362 tmp = 16 * ic->ic_bss->ni_intval;
2363 RAL_WRITE(sc, RT2560_CSR12, tmp);
2364
2365 RAL_WRITE(sc, RT2560_CSR13, 0);
2366
2367 logcwmin = 5;
2368 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2369 tmp = logcwmin << 16 | preload;
2370 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2371
2372 /* finally, enable TSF synchronization */
2373 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2374 if (ic->ic_opmode == IEEE80211_M_STA)
2375 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2376 else
2377 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2378 RT2560_ENABLE_BEACON_GENERATOR;
2379 RAL_WRITE(sc, RT2560_CSR14, tmp);
2380
2381 DPRINTF(("enabling TSF synchronization\n"));
2382}
2383
2384static void
2385rt2560_update_plcp(struct rt2560_softc *sc)
2386{
2387 struct ieee80211com *ic = &sc->sc_ic;
2388
2389 /* no short preamble for 1Mbps */
2390 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2391
2392 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2393 /* values taken from the reference driver */
2394 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2395 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2396 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2397 } else {
2398 /* same values as above or'ed 0x8 */
2399 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2400 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2401 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2402 }
2403
2404 DPRINTF(("updating PLCP for %s preamble\n",
2405 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2406}
2407
2408/*
2409 * This function can be called by ieee80211_set_shortslottime(). Refer to
2410 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2411 */
2412static void
2413rt2560_update_slot(struct ifnet *ifp)
2414{
2415 struct rt2560_softc *sc = ifp->if_softc;
2416 struct ieee80211com *ic = &sc->sc_ic;
2417 uint8_t slottime;
2418 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2419 uint32_t tmp;
2420
2421 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2422
2423 /* update the MAC slot boundaries */
2424 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2425 tx_pifs = tx_sifs + slottime;
2426 tx_difs = tx_sifs + 2 * slottime;
2427 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2428
2429 tmp = RAL_READ(sc, RT2560_CSR11);
2430 tmp = (tmp & ~0x1f00) | slottime << 8;
2431 RAL_WRITE(sc, RT2560_CSR11, tmp);
2432
2433 tmp = tx_pifs << 16 | tx_sifs;
2434 RAL_WRITE(sc, RT2560_CSR18, tmp);
2435
2436 tmp = eifs << 16 | tx_difs;
2437 RAL_WRITE(sc, RT2560_CSR19, tmp);
2438
2439 DPRINTF(("setting slottime to %uus\n", slottime));
2440}
2441
2442static void
2443rt2560_set_basicrates(struct rt2560_softc *sc)
2444{
2445 struct ieee80211com *ic = &sc->sc_ic;
2446
2447 /* update basic rate set */
2448 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2449 /* 11b basic rates: 1, 2Mbps */
2450 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2451 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2452 /* 11a basic rates: 6, 12, 24Mbps */
2453 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2454 } else {
2455 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2456 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2457 }
2458}
2459
2460static void
2461rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2462{
2463 uint32_t tmp;
2464
2465 /* set ON period to 70ms and OFF period to 30ms */
2466 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2467 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2468}
2469
2470static void
2471rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid)
2472{
2473 uint32_t tmp;
2474
2475 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2476 RAL_WRITE(sc, RT2560_CSR5, tmp);
2477
2478 tmp = bssid[4] | bssid[5] << 8;
2479 RAL_WRITE(sc, RT2560_CSR6, tmp);
2480
2481 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2482}
2483
2484static void
2485rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2486{
2487 uint32_t tmp;
2488
2489 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2490 RAL_WRITE(sc, RT2560_CSR3, tmp);
2491
2492 tmp = addr[4] | addr[5] << 8;
2493 RAL_WRITE(sc, RT2560_CSR4, tmp);
2494
2495 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2496}
2497
2498static void
2499rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2500{
2501 uint32_t tmp;
2502
2503 tmp = RAL_READ(sc, RT2560_CSR3);
2504 addr[0] = tmp & 0xff;
2505 addr[1] = (tmp >> 8) & 0xff;
2506 addr[2] = (tmp >> 16) & 0xff;
2507 addr[3] = (tmp >> 24);
2508
2509 tmp = RAL_READ(sc, RT2560_CSR4);
2510 addr[4] = tmp & 0xff;
2511 addr[5] = (tmp >> 8) & 0xff;
2512}
2513
2514static void
2515rt2560_update_promisc(struct rt2560_softc *sc)
2516{
2517 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2518 uint32_t tmp;
2519
2520 tmp = RAL_READ(sc, RT2560_RXCSR0);
2521
2522 tmp &= ~RT2560_DROP_NOT_TO_ME;
2523 if (!(ifp->if_flags & IFF_PROMISC))
2524 tmp |= RT2560_DROP_NOT_TO_ME;
2525
2526 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2527
2528 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2529 "entering" : "leaving"));
2530}
2531
2532static const char *
2533rt2560_get_rf(int rev)
2534{
2535 switch (rev) {
2536 case RT2560_RF_2522: return "RT2522";
2537 case RT2560_RF_2523: return "RT2523";
2538 case RT2560_RF_2524: return "RT2524";
2539 case RT2560_RF_2525: return "RT2525";
2540 case RT2560_RF_2525E: return "RT2525e";
2541 case RT2560_RF_2526: return "RT2526";
2542 case RT2560_RF_5222: return "RT5222";
2543 default: return "unknown";
2544 }
2545}
2546
2547static void
2548rt2560_read_eeprom(struct rt2560_softc *sc)
2549{
2550 uint16_t val;
2551 int i;
2552
2553 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2554 sc->rf_rev = (val >> 11) & 0x7;
2555 sc->hw_radio = (val >> 10) & 0x1;
2556 sc->led_mode = (val >> 6) & 0x7;
2557 sc->rx_ant = (val >> 4) & 0x3;
2558 sc->tx_ant = (val >> 2) & 0x3;
2559 sc->nb_ant = val & 0x3;
2560
2561 /* read default values for BBP registers */
2562 for (i = 0; i < 16; i++) {
2563 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2564 sc->bbp_prom[i].reg = val >> 8;
2565 sc->bbp_prom[i].val = val & 0xff;
2566 }
2567
2568 /* read Tx power for all b/g channels */
2569 for (i = 0; i < 14 / 2; i++) {
2570 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2571 sc->txpow[i * 2] = val >> 8;
2572 sc->txpow[i * 2 + 1] = val & 0xff;
2573 }
2574
2575 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2576 if ((val & 0xff) == 0xff)
2577 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2578 else
2579 sc->rssi_corr = val & 0xff;
2580 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2581 sc->rssi_corr, val));
2582}
2583
2584
2585static void
2586rt2560_scan_start(struct ieee80211com *ic)
2587{
2588 struct ifnet *ifp = ic->ic_ifp;
2589 struct rt2560_softc *sc = ifp->if_softc;
2590
2591 /* abort TSF synchronization */
2592 RAL_WRITE(sc, RT2560_CSR14, 0);
2593 rt2560_set_bssid(sc, ifp->if_broadcastaddr);
2594}
2595
2596static void
2597rt2560_scan_end(struct ieee80211com *ic)
2598{
2599 struct ifnet *ifp = ic->ic_ifp;
2600 struct rt2560_softc *sc = ifp->if_softc;
2601
2602 rt2560_enable_tsf_sync(sc);
2603 /* XXX keep local copy */
2604 rt2560_set_bssid(sc, ic->ic_bss->ni_bssid);
2605}
2606
2607static int
2608rt2560_bbp_init(struct rt2560_softc *sc)
2609{
2610#define N(a) (sizeof (a) / sizeof ((a)[0]))
2611 int i, ntries;
2612
2613 /* wait for BBP to be ready */
2614 for (ntries = 0; ntries < 100; ntries++) {
2615 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2616 break;
2617 DELAY(1);
2618 }
2619 if (ntries == 100) {
2620 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2621 return EIO;
2622 }
2623
2624 /* initialize BBP registers to default values */
2625 for (i = 0; i < N(rt2560_def_bbp); i++) {
2626 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2627 rt2560_def_bbp[i].val);
2628 }
2629#if 0
2630 /* initialize BBP registers to values stored in EEPROM */
2631 for (i = 0; i < 16; i++) {
2632 if (sc->bbp_prom[i].reg == 0xff)
2633 continue;
2634 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2635 }
2636#endif
2637
2638 return 0;
2639#undef N
2640}
2641
2642static void
2643rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2644{
2645 uint32_t tmp;
2646 uint8_t tx;
2647
2648 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2649 if (antenna == 1)
2650 tx |= RT2560_BBP_ANTA;
2651 else if (antenna == 2)
2652 tx |= RT2560_BBP_ANTB;
2653 else
2654 tx |= RT2560_BBP_DIVERSITY;
2655
2656 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2657 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2658 sc->rf_rev == RT2560_RF_5222)
2659 tx |= RT2560_BBP_FLIPIQ;
2660
2661 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2662
2663 /* update values for CCK and OFDM in BBPCSR1 */
2664 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2665 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2666 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2667}
2668
2669static void
2670rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2671{
2672 uint8_t rx;
2673
2674 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2675 if (antenna == 1)
2676 rx |= RT2560_BBP_ANTA;
2677 else if (antenna == 2)
2678 rx |= RT2560_BBP_ANTB;
2679 else
2680 rx |= RT2560_BBP_DIVERSITY;
2681
2682 /* need to force no I/Q flip for RF 2525e and 2526 */
2683 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2684 rx &= ~RT2560_BBP_FLIPIQ;
2685
2686 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2687}
2688
2689static void
2690rt2560_init(void *priv)
2691{
2692#define N(a) (sizeof (a) / sizeof ((a)[0]))
2693 struct rt2560_softc *sc = priv;
2694 struct ieee80211com *ic = &sc->sc_ic;
2695 struct ifnet *ifp = ic->ic_ifp;
2696 uint32_t tmp;
2697 int i;
2698
2699
2700
2701 rt2560_stop(sc);
2702
2703 RAL_LOCK(sc);
2704 /* setup tx rings */
2705 tmp = RT2560_PRIO_RING_COUNT << 24 |
2706 RT2560_ATIM_RING_COUNT << 16 |
2707 RT2560_TX_RING_COUNT << 8 |
2708 RT2560_TX_DESC_SIZE;
2709
2710 /* rings must be initialized in this exact order */
2711 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2712 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2713 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2714 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2715 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2716
2717 /* setup rx ring */
2718 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2719
2720 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2721 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2722
2723 /* initialize MAC registers to default values */
2724 for (i = 0; i < N(rt2560_def_mac); i++)
2725 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2726
2727 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2728 rt2560_set_macaddr(sc, ic->ic_myaddr);
2729
2730 /* set basic rate set (will be updated later) */
2731 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2732
2733 rt2560_set_txantenna(sc, sc->tx_ant);
2734 rt2560_set_rxantenna(sc, sc->rx_ant);
2735 rt2560_update_slot(ifp);
2736 rt2560_update_plcp(sc);
2737 rt2560_update_led(sc, 0, 0);
2738
2739 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2740 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2741
2742 if (rt2560_bbp_init(sc) != 0) {
2743 rt2560_stop(sc);
2744 RAL_UNLOCK(sc);
2745 return;
2746 }
2747
2748 /* set default BSS channel */
2749 rt2560_set_chan(sc, ic->ic_curchan);
2750
2751 /* kick Rx */
2752 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2753 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2754 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2755 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2756 tmp |= RT2560_DROP_TODS;
2757 if (!(ifp->if_flags & IFF_PROMISC))
2758 tmp |= RT2560_DROP_NOT_TO_ME;
2759 }
2760 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2761
2762 /* clear old FCS and Rx FIFO errors */
2763 RAL_READ(sc, RT2560_CNT0);
2764 RAL_READ(sc, RT2560_CNT4);
2765
2766 /* clear any pending interrupts */
2767 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2768
2769 /* enable interrupts */
2770 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2771
2772 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2773 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2774
2775 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2776 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2777 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2778 } else
2779 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2780
2781 RAL_UNLOCK(sc);
2782#undef N
2783}
2784
2785void
2786rt2560_stop(void *arg)
2787{
2788 struct rt2560_softc *sc = arg;
2789 struct ieee80211com *ic = &sc->sc_ic;
2790 struct ifnet *ifp = ic->ic_ifp;
2791 volatile int *flags = &sc->sc_flags;
2792
2793 while (*flags & RAL_INPUT_RUNNING) {
2794 tsleep(sc, 0, "ralrunning", hz/10);
2795 }
2796
2797 RAL_LOCK(sc);
2798 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2799 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2800 sc->sc_tx_timer = 0;
2801 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2802
2803 /* abort Tx */
2804 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2805
2806 /* disable Rx */
2807 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2808
2809 /* reset ASIC (imply reset BBP) */
2810 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2811 RAL_WRITE(sc, RT2560_CSR1, 0);
2812
2813 /* disable interrupts */
2814 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2815
2816 /* reset Tx and Rx rings */
2817 rt2560_reset_tx_ring(sc, &sc->txq);
2818 rt2560_reset_tx_ring(sc, &sc->atimq);
2819 rt2560_reset_tx_ring(sc, &sc->prioq);
2820 rt2560_reset_tx_ring(sc, &sc->bcnq);
2821 rt2560_reset_rx_ring(sc, &sc->rxq);
2822 }
2823 RAL_UNLOCK(sc);
2824}
2825
2826static int
2827rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2828 const struct ieee80211_bpf_params *params)
2829{
2830 struct ieee80211com *ic = ni->ni_ic;
2831 struct ifnet *ifp = ic->ic_ifp;
2832 struct rt2560_softc *sc = ifp->if_softc;
2833
2834 RAL_LOCK(sc);
2835
2836 /* prevent management frames from being sent if we're not ready */
2837 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2838 RAL_UNLOCK(sc);
2839 m_freem(m);
2840 ieee80211_free_node(ni);
2841 return ENETDOWN;
2842 }
2843 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2844 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2845 RAL_UNLOCK(sc);
2846 m_freem(m);
2847 ieee80211_free_node(ni);
2848 return ENOBUFS; /* XXX */
2849 }
2850
2851 if (bpf_peers_present(ic->ic_rawbpf))
2852 bpf_mtap(ic->ic_rawbpf, m);
2853
2854 ifp->if_opackets++;
2855
2856 if (params == NULL) {
2857 /*
2858 * Legacy path; interpret frame contents to decide
2859 * precisely how to send the frame.
2860 */
2861 if (rt2560_tx_mgt(sc, m, ni) != 0)
2862 goto bad;
2863 } else {
2864 /*
2865 * Caller supplied explicit parameters to use in
2866 * sending the frame.
2867 */
2868 if (rt2560_tx_raw(sc, m, ni, params))
2869 goto bad;
2870 }
2871 sc->sc_tx_timer = 5;
2872 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2873
2874 RAL_UNLOCK(sc);
2875
2876 return 0;
2877bad:
2878 ifp->if_oerrors++;
2879 ieee80211_free_node(ni);
2880 RAL_UNLOCK(sc);
2881 return EIO; /* XXX */
2882}
2883
| 1316
1317 if (bpf_peers_present(ic->ic_rawbpf))
1318 bpf_mtap(ic->ic_rawbpf, data->m);
1319
1320 rt2560_tx_bcn(sc, data->m, data->ni);
1321
1322 DPRINTFN(15, ("beacon expired\n"));
1323
1324 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT;
1325}
1326
1327/* ARGSUSED */
1328static void
1329rt2560_wakeup_expire(struct rt2560_softc *sc)
1330{
1331 DPRINTFN(2, ("wakeup expired\n"));
1332}
1333
1334void
1335rt2560_intr(void *arg)
1336{
1337 struct rt2560_softc *sc = arg;
1338 struct ifnet *ifp = sc->sc_ifp;
1339 uint32_t r;
1340
1341 RAL_LOCK(sc);
1342
1343 /* disable interrupts */
1344 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
1345
1346 /* don't re-enable interrupts if we're shutting down */
1347 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1348 RAL_UNLOCK(sc);
1349 return;
1350 }
1351
1352 r = RAL_READ(sc, RT2560_CSR7);
1353 RAL_WRITE(sc, RT2560_CSR7, r);
1354
1355 if (r & RT2560_BEACON_EXPIRE)
1356 rt2560_beacon_expire(sc);
1357
1358 if (r & RT2560_WAKEUP_EXPIRE)
1359 rt2560_wakeup_expire(sc);
1360
1361 if (r & RT2560_ENCRYPTION_DONE)
1362 rt2560_encryption_intr(sc);
1363
1364 if (r & RT2560_TX_DONE)
1365 rt2560_tx_intr(sc);
1366
1367 if (r & RT2560_PRIO_DONE)
1368 rt2560_prio_intr(sc);
1369
1370 if (r & RT2560_DECRYPTION_DONE)
1371 rt2560_decryption_intr(sc);
1372
1373 if (r & RT2560_RX_DONE)
1374 rt2560_rx_intr(sc);
1375
1376 /* re-enable interrupts */
1377 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
1378
1379 RAL_UNLOCK(sc);
1380}
1381
1382/* quickly determine if a given rate is CCK or OFDM */
1383#define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1384
1385#define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */
1386#define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */
1387
1388#define RAL_SIFS 10 /* us */
1389
1390#define RT2560_TXRX_TURNAROUND 10 /* us */
1391
1392/*
1393 * This function is only used by the Rx radiotap code.
1394 */
1395static uint8_t
1396rt2560_rxrate(struct rt2560_rx_desc *desc)
1397{
1398 if (le32toh(desc->flags) & RT2560_RX_OFDM) {
1399 /* reverse function of rt2560_plcp_signal */
1400 switch (desc->rate) {
1401 case 0xb: return 12;
1402 case 0xf: return 18;
1403 case 0xa: return 24;
1404 case 0xe: return 36;
1405 case 0x9: return 48;
1406 case 0xd: return 72;
1407 case 0x8: return 96;
1408 case 0xc: return 108;
1409 }
1410 } else {
1411 if (desc->rate == 10)
1412 return 2;
1413 if (desc->rate == 20)
1414 return 4;
1415 if (desc->rate == 55)
1416 return 11;
1417 if (desc->rate == 110)
1418 return 22;
1419 }
1420 return 2; /* should not get there */
1421}
1422
1423/*
1424 * Return the expected ack rate for a frame transmitted at rate `rate'.
1425 * XXX: this should depend on the destination node basic rate set.
1426 */
1427static int
1428rt2560_ack_rate(struct ieee80211com *ic, int rate)
1429{
1430 switch (rate) {
1431 /* CCK rates */
1432 case 2:
1433 return 2;
1434 case 4:
1435 case 11:
1436 case 22:
1437 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
1438
1439 /* OFDM rates */
1440 case 12:
1441 case 18:
1442 return 12;
1443 case 24:
1444 case 36:
1445 return 24;
1446 case 48:
1447 case 72:
1448 case 96:
1449 case 108:
1450 return 48;
1451 }
1452
1453 /* default to 1Mbps */
1454 return 2;
1455}
1456
1457/*
1458 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
1459 * The function automatically determines the operating mode depending on the
1460 * given rate. `flags' indicates whether short preamble is in use or not.
1461 */
1462static uint16_t
1463rt2560_txtime(int len, int rate, uint32_t flags)
1464{
1465 uint16_t txtime;
1466
1467 if (RAL_RATE_IS_OFDM(rate)) {
1468 /* IEEE Std 802.11a-1999, pp. 37 */
1469 txtime = (8 + 4 * len + 3 + rate - 1) / rate;
1470 txtime = 16 + 4 + 4 * txtime + 6;
1471 } else {
1472 /* IEEE Std 802.11b-1999, pp. 28 */
1473 txtime = (16 * len + rate - 1) / rate;
1474 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
1475 txtime += 72 + 24;
1476 else
1477 txtime += 144 + 48;
1478 }
1479
1480 return txtime;
1481}
1482
1483static uint8_t
1484rt2560_plcp_signal(int rate)
1485{
1486 switch (rate) {
1487 /* CCK rates (returned values are device-dependent) */
1488 case 2: return 0x0;
1489 case 4: return 0x1;
1490 case 11: return 0x2;
1491 case 22: return 0x3;
1492
1493 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1494 case 12: return 0xb;
1495 case 18: return 0xf;
1496 case 24: return 0xa;
1497 case 36: return 0xe;
1498 case 48: return 0x9;
1499 case 72: return 0xd;
1500 case 96: return 0x8;
1501 case 108: return 0xc;
1502
1503 /* unsupported rates (should not get there) */
1504 default: return 0xff;
1505 }
1506}
1507
1508static void
1509rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc,
1510 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
1511{
1512 struct ieee80211com *ic = &sc->sc_ic;
1513 uint16_t plcp_length;
1514 int remainder;
1515
1516 desc->flags = htole32(flags);
1517 desc->flags |= htole32(len << 16);
1518 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) :
1519 htole32(RT2560_TX_BUSY | RT2560_TX_VALID);
1520
1521 desc->physaddr = htole32(physaddr);
1522 desc->wme = htole16(
1523 RT2560_AIFSN(2) |
1524 RT2560_LOGCWMIN(3) |
1525 RT2560_LOGCWMAX(8));
1526
1527 /* setup PLCP fields */
1528 desc->plcp_signal = rt2560_plcp_signal(rate);
1529 desc->plcp_service = 4;
1530
1531 len += IEEE80211_CRC_LEN;
1532 if (RAL_RATE_IS_OFDM(rate)) {
1533 desc->flags |= htole32(RT2560_TX_OFDM);
1534
1535 plcp_length = len & 0xfff;
1536 desc->plcp_length_hi = plcp_length >> 6;
1537 desc->plcp_length_lo = plcp_length & 0x3f;
1538 } else {
1539 plcp_length = (16 * len + rate - 1) / rate;
1540 if (rate == 22) {
1541 remainder = (16 * len) % 22;
1542 if (remainder != 0 && remainder < 7)
1543 desc->plcp_service |= RT2560_PLCP_LENGEXT;
1544 }
1545 desc->plcp_length_hi = plcp_length >> 8;
1546 desc->plcp_length_lo = plcp_length & 0xff;
1547
1548 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
1549 desc->plcp_signal |= 0x08;
1550 }
1551}
1552
1553static int
1554rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0,
1555 struct ieee80211_node *ni)
1556{
1557 struct ieee80211com *ic = &sc->sc_ic;
1558 struct rt2560_tx_desc *desc;
1559 struct rt2560_tx_data *data;
1560 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1561 int nsegs, rate, error;
1562
1563 desc = &sc->bcnq.desc[sc->bcnq.cur];
1564 data = &sc->bcnq.data[sc->bcnq.cur];
1565
1566 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2;
1567
1568 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
1569 segs, &nsegs, BUS_DMA_NOWAIT);
1570 if (error != 0) {
1571 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1572 error);
1573 m_freem(m0);
1574 return error;
1575 }
1576
1577 if (bpf_peers_present(sc->sc_drvbpf)) {
1578 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1579
1580 tap->wt_flags = 0;
1581 tap->wt_rate = rate;
1582 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1583 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1584 tap->wt_antenna = sc->tx_ant;
1585
1586 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1587 }
1588
1589 data->m = m0;
1590 data->ni = ni;
1591
1592 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF |
1593 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr);
1594
1595 DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
1596 m0->m_pkthdr.len, sc->bcnq.cur, rate));
1597
1598 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1599 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
1600 BUS_DMASYNC_PREWRITE);
1601
1602 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT;
1603
1604 return 0;
1605}
1606
1607static int
1608rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0,
1609 struct ieee80211_node *ni)
1610{
1611 struct ieee80211com *ic = &sc->sc_ic;
1612 struct rt2560_tx_desc *desc;
1613 struct rt2560_tx_data *data;
1614 struct ieee80211_frame *wh;
1615 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1616 uint16_t dur;
1617 uint32_t flags = 0;
1618 int nsegs, rate, error;
1619
1620 desc = &sc->prioq.desc[sc->prioq.cur];
1621 data = &sc->prioq.data[sc->prioq.cur];
1622
1623 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1624
1625 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1626 segs, &nsegs, 0);
1627 if (error != 0) {
1628 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1629 error);
1630 m_freem(m0);
1631 return error;
1632 }
1633
1634 if (bpf_peers_present(sc->sc_drvbpf)) {
1635 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1636
1637 tap->wt_flags = 0;
1638 tap->wt_rate = rate;
1639 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1640 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1641 tap->wt_antenna = sc->tx_ant;
1642
1643 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1644 }
1645
1646 data->m = m0;
1647 data->ni = ni;
1648
1649 wh = mtod(m0, struct ieee80211_frame *);
1650
1651 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1652 flags |= RT2560_TX_ACK;
1653
1654 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) +
1655 RAL_SIFS;
1656 *(uint16_t *)wh->i_dur = htole16(dur);
1657
1658 /* tell hardware to add timestamp for probe responses */
1659 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
1660 IEEE80211_FC0_TYPE_MGT &&
1661 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
1662 IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1663 flags |= RT2560_TX_TIMESTAMP;
1664 }
1665
1666 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
1667 segs->ds_addr);
1668
1669 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1670 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1671 BUS_DMASYNC_PREWRITE);
1672
1673 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
1674 m0->m_pkthdr.len, sc->prioq.cur, rate));
1675
1676 /* kick prio */
1677 sc->prioq.queued++;
1678 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1679 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1680
1681 return 0;
1682}
1683
1684static int
1685rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0,
1686 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
1687{
1688 struct ieee80211com *ic = &sc->sc_ic;
1689 struct rt2560_tx_desc *desc;
1690 struct rt2560_tx_data *data;
1691 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1692 uint32_t flags;
1693 int nsegs, rate, error;
1694
1695 desc = &sc->prioq.desc[sc->prioq.cur];
1696 data = &sc->prioq.data[sc->prioq.cur];
1697
1698 rate = params->ibp_rate0 & IEEE80211_RATE_VAL;
1699 /* XXX validate */
1700 if (rate == 0) {
1701 m_freem(m0);
1702 return EINVAL;
1703 }
1704
1705 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
1706 segs, &nsegs, 0);
1707 if (error != 0) {
1708 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1709 error);
1710 m_freem(m0);
1711 return error;
1712 }
1713
1714 if (bpf_peers_present(sc->sc_drvbpf)) {
1715 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1716
1717 tap->wt_flags = 0;
1718 tap->wt_rate = rate;
1719 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1720 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1721 tap->wt_antenna = sc->tx_ant;
1722
1723 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1724 }
1725
1726 data->m = m0;
1727 data->ni = ni;
1728
1729 flags = 0;
1730 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
1731 flags |= RT2560_TX_ACK;
1732
1733 /* XXX need to setup descriptor ourself */
1734 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len,
1735 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0,
1736 segs->ds_addr);
1737
1738 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1739 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
1740 BUS_DMASYNC_PREWRITE);
1741
1742 DPRINTFN(10, ("sending raw frame len=%u idx=%u rate=%u\n",
1743 m0->m_pkthdr.len, sc->prioq.cur, rate));
1744
1745 /* kick prio */
1746 sc->prioq.queued++;
1747 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT;
1748 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO);
1749
1750 return 0;
1751}
1752
1753/*
1754 * Build a RTS control frame.
1755 */
1756static struct mbuf *
1757rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh,
1758 uint16_t dur)
1759{
1760 struct ieee80211_frame_rts *rts;
1761 struct mbuf *m;
1762
1763 MGETHDR(m, M_DONTWAIT, MT_DATA);
1764 if (m == NULL) {
1765 sc->sc_ic.ic_stats.is_tx_nobuf++;
1766 device_printf(sc->sc_dev, "could not allocate RTS frame\n");
1767 return NULL;
1768 }
1769
1770 rts = mtod(m, struct ieee80211_frame_rts *);
1771
1772 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
1773 IEEE80211_FC0_SUBTYPE_RTS;
1774 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
1775 *(uint16_t *)rts->i_dur = htole16(dur);
1776 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
1777 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
1778
1779 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
1780
1781 return m;
1782}
1783
1784static int
1785rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0,
1786 struct ieee80211_node *ni)
1787{
1788 struct ieee80211com *ic = &sc->sc_ic;
1789 struct rt2560_tx_desc *desc;
1790 struct rt2560_tx_data *data;
1791 struct rt2560_node *rn;
1792 struct ieee80211_frame *wh;
1793 struct ieee80211_key *k;
1794 struct mbuf *mnew;
1795 bus_dma_segment_t segs[RT2560_MAX_SCATTER];
1796 uint16_t dur;
1797 uint32_t flags = 0;
1798 int nsegs, rate, error;
1799
1800 wh = mtod(m0, struct ieee80211_frame *);
1801
1802 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
1803 rate = ic->ic_fixed_rate;
1804 } else {
1805 struct ieee80211_rateset *rs;
1806
1807 rs = &ni->ni_rates;
1808 rn = (struct rt2560_node *)ni;
1809 ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs, wh,
1810 m0->m_pkthdr.len, NULL, 0);
1811 rate = rs->rs_rates[ni->ni_txrate];
1812 }
1813 rate &= IEEE80211_RATE_VAL;
1814
1815 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1816 k = ieee80211_crypto_encap(ic, ni, m0);
1817 if (k == NULL) {
1818 m_freem(m0);
1819 return ENOBUFS;
1820 }
1821
1822 /* packet header may have moved, reset our local pointer */
1823 wh = mtod(m0, struct ieee80211_frame *);
1824 }
1825
1826 /*
1827 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
1828 * for directed frames only when the length of the MPDU is greater
1829 * than the length threshold indicated by [...]" ic_rtsthreshold.
1830 */
1831 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
1832 m0->m_pkthdr.len > ic->ic_rtsthreshold) {
1833 struct mbuf *m;
1834 uint16_t dur;
1835 int rtsrate, ackrate;
1836
1837 rtsrate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2;
1838 ackrate = rt2560_ack_rate(ic, rate);
1839
1840 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
1841 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
1842 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
1843 3 * RAL_SIFS;
1844
1845 m = rt2560_get_rts(sc, wh, dur);
1846
1847 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1848 data = &sc->txq.data[sc->txq.cur_encrypt];
1849
1850 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1851 m, segs, &nsegs, 0);
1852 if (error != 0) {
1853 device_printf(sc->sc_dev,
1854 "could not map mbuf (error %d)\n", error);
1855 m_freem(m);
1856 m_freem(m0);
1857 return error;
1858 }
1859
1860 /* avoid multiple free() of the same node for each fragment */
1861 ieee80211_ref_node(ni);
1862
1863 data->m = m;
1864 data->ni = ni;
1865
1866 /* RTS frames are not taken into account for rssadapt */
1867 data->id.id_node = NULL;
1868
1869 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK |
1870 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1,
1871 segs->ds_addr);
1872
1873 bus_dmamap_sync(sc->txq.data_dmat, data->map,
1874 BUS_DMASYNC_PREWRITE);
1875
1876 sc->txq.queued++;
1877 sc->txq.cur_encrypt =
1878 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1879
1880 /*
1881 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
1882 * asynchronous data frame shall be transmitted after the CTS
1883 * frame and a SIFS period.
1884 */
1885 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS;
1886 }
1887
1888 data = &sc->txq.data[sc->txq.cur_encrypt];
1889 desc = &sc->txq.desc[sc->txq.cur_encrypt];
1890
1891 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
1892 segs, &nsegs, 0);
1893 if (error != 0 && error != EFBIG) {
1894 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1895 error);
1896 m_freem(m0);
1897 return error;
1898 }
1899 if (error != 0) {
1900 mnew = m_defrag(m0, M_DONTWAIT);
1901 if (mnew == NULL) {
1902 device_printf(sc->sc_dev,
1903 "could not defragment mbuf\n");
1904 m_freem(m0);
1905 return ENOBUFS;
1906 }
1907 m0 = mnew;
1908
1909 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
1910 m0, segs, &nsegs, 0);
1911 if (error != 0) {
1912 device_printf(sc->sc_dev,
1913 "could not map mbuf (error %d)\n", error);
1914 m_freem(m0);
1915 return error;
1916 }
1917
1918 /* packet header may have moved, reset our local pointer */
1919 wh = mtod(m0, struct ieee80211_frame *);
1920 }
1921
1922 if (bpf_peers_present(sc->sc_drvbpf)) {
1923 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap;
1924
1925 tap->wt_flags = 0;
1926 tap->wt_rate = rate;
1927 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
1928 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
1929 tap->wt_antenna = sc->tx_ant;
1930
1931 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
1932 }
1933
1934 data->m = m0;
1935 data->ni = ni;
1936
1937 /* remember link conditions for rate adaptation algorithm */
1938 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) {
1939 data->id.id_len = m0->m_pkthdr.len;
1940 data->id.id_rateidx = ni->ni_txrate;
1941 data->id.id_node = ni;
1942 data->id.id_rssi = ni->ni_rssi;
1943 } else
1944 data->id.id_node = NULL;
1945
1946 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
1947 flags |= RT2560_TX_ACK;
1948
1949 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate),
1950 ic->ic_flags) + RAL_SIFS;
1951 *(uint16_t *)wh->i_dur = htole16(dur);
1952 }
1953
1954 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
1955 segs->ds_addr);
1956
1957 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1958 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
1959 BUS_DMASYNC_PREWRITE);
1960
1961 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
1962 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
1963
1964 /* kick encrypt */
1965 sc->txq.queued++;
1966 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT;
1967 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT);
1968
1969 return 0;
1970}
1971
1972static void
1973rt2560_start(struct ifnet *ifp)
1974{
1975 struct rt2560_softc *sc = ifp->if_softc;
1976 struct ieee80211com *ic = &sc->sc_ic;
1977 struct mbuf *m0;
1978 struct ether_header *eh;
1979 struct ieee80211_node *ni;
1980
1981 RAL_LOCK(sc);
1982
1983 /* prevent management frames from being sent if we're not ready */
1984 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1985 RAL_UNLOCK(sc);
1986 return;
1987 }
1988
1989 for (;;) {
1990 IF_POLL(&ic->ic_mgtq, m0);
1991 if (m0 != NULL) {
1992 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
1993 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1994 break;
1995 }
1996 IF_DEQUEUE(&ic->ic_mgtq, m0);
1997
1998 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
1999 m0->m_pkthdr.rcvif = NULL;
2000
2001 if (bpf_peers_present(ic->ic_rawbpf))
2002 bpf_mtap(ic->ic_rawbpf, m0);
2003
2004 if (rt2560_tx_mgt(sc, m0, ni) != 0) {
2005 ieee80211_free_node(ni);
2006 break;
2007 }
2008 } else {
2009 if (ic->ic_state != IEEE80211_S_RUN)
2010 break;
2011 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
2012 if (m0 == NULL)
2013 break;
2014 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) {
2015 IFQ_DRV_PREPEND(&ifp->if_snd, m0);
2016 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2017 break;
2018 }
2019 /*
2020 * Cancel any background scan.
2021 */
2022 if (ic->ic_flags & IEEE80211_F_SCAN)
2023 ieee80211_cancel_scan(ic);
2024
2025 if (m0->m_len < sizeof (struct ether_header) &&
2026 !(m0 = m_pullup(m0, sizeof (struct ether_header))))
2027 continue;
2028
2029 eh = mtod(m0, struct ether_header *);
2030 ni = ieee80211_find_txnode(ic, eh->ether_dhost);
2031 if (ni == NULL) {
2032 m_freem(m0);
2033 continue;
2034 }
2035 if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) &&
2036 (m0->m_flags & M_PWR_SAV) == 0) {
2037 /*
2038 * Station in power save mode; pass the frame
2039 * to the 802.11 layer and continue. We'll get
2040 * the frame back when the time is right.
2041 */
2042 ieee80211_pwrsave(ni, m0);
2043 /*
2044 * If we're in power save mode 'cuz of a bg
2045 * scan cancel it so the traffic can flow.
2046 * The packet we just queued will automatically
2047 * get sent when we drop out of power save.
2048 * XXX locking
2049 */
2050 if (ic->ic_flags & IEEE80211_F_SCAN)
2051 ieee80211_cancel_scan(ic);
2052 ieee80211_free_node(ni);
2053 continue;
2054
2055 }
2056
2057 BPF_MTAP(ifp, m0);
2058
2059 m0 = ieee80211_encap(ic, m0, ni);
2060 if (m0 == NULL) {
2061 ieee80211_free_node(ni);
2062 continue;
2063 }
2064
2065 if (bpf_peers_present(ic->ic_rawbpf))
2066 bpf_mtap(ic->ic_rawbpf, m0);
2067
2068 if (rt2560_tx_data(sc, m0, ni) != 0) {
2069 ieee80211_free_node(ni);
2070 ifp->if_oerrors++;
2071 break;
2072 }
2073 }
2074
2075 sc->sc_tx_timer = 5;
2076 ic->ic_lastdata = ticks;
2077 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2078 }
2079
2080 RAL_UNLOCK(sc);
2081}
2082
2083static void
2084rt2560_watchdog(void *arg)
2085{
2086 struct rt2560_softc *sc = arg;
2087
2088 if (sc->sc_tx_timer > 0) {
2089 if (--sc->sc_tx_timer == 0) {
2090 device_printf(sc->sc_dev, "device timeout\n");
2091 rt2560_init(sc);
2092 sc->sc_ifp->if_oerrors++;
2093 return;
2094 }
2095 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2096 }
2097}
2098
2099/*
2100 * This function allows for fast channel switching in monitor mode (used by
2101 * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
2102 * generate a new beacon frame.
2103 */
2104static int
2105rt2560_reset(struct ifnet *ifp)
2106{
2107 struct rt2560_softc *sc = ifp->if_softc;
2108 struct ieee80211com *ic = &sc->sc_ic;
2109
2110 if (ic->ic_opmode != IEEE80211_M_MONITOR)
2111 return ENETRESET;
2112
2113 rt2560_set_chan(sc, ic->ic_curchan);
2114
2115 return 0;
2116}
2117
2118static int
2119rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2120{
2121 struct rt2560_softc *sc = ifp->if_softc;
2122 struct ieee80211com *ic = &sc->sc_ic;
2123 int error = 0;
2124
2125
2126
2127 switch (cmd) {
2128 case SIOCSIFFLAGS:
2129 if (ifp->if_flags & IFF_UP) {
2130 RAL_LOCK(sc);
2131 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2132 rt2560_update_promisc(sc);
2133 else
2134 rt2560_init(sc);
2135 RAL_UNLOCK(sc);
2136 } else {
2137 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2138 rt2560_stop(sc);
2139 }
2140
2141 break;
2142
2143 default:
2144 error = ieee80211_ioctl(ic, cmd, data);
2145 }
2146
2147 if (error == ENETRESET) {
2148 if ((ifp->if_flags & IFF_UP) &&
2149 (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
2150 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL))
2151 rt2560_init(sc);
2152 error = 0;
2153 }
2154
2155
2156 return error;
2157}
2158
2159static void
2160rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val)
2161{
2162 uint32_t tmp;
2163 int ntries;
2164
2165 for (ntries = 0; ntries < 100; ntries++) {
2166 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY))
2167 break;
2168 DELAY(1);
2169 }
2170 if (ntries == 100) {
2171 device_printf(sc->sc_dev, "could not write to BBP\n");
2172 return;
2173 }
2174
2175 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val;
2176 RAL_WRITE(sc, RT2560_BBPCSR, tmp);
2177
2178 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
2179}
2180
2181static uint8_t
2182rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg)
2183{
2184 uint32_t val;
2185 int ntries;
2186
2187 val = RT2560_BBP_BUSY | reg << 8;
2188 RAL_WRITE(sc, RT2560_BBPCSR, val);
2189
2190 for (ntries = 0; ntries < 100; ntries++) {
2191 val = RAL_READ(sc, RT2560_BBPCSR);
2192 if (!(val & RT2560_BBP_BUSY))
2193 return val & 0xff;
2194 DELAY(1);
2195 }
2196
2197 device_printf(sc->sc_dev, "could not read from BBP\n");
2198 return 0;
2199}
2200
2201static void
2202rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val)
2203{
2204 uint32_t tmp;
2205 int ntries;
2206
2207 for (ntries = 0; ntries < 100; ntries++) {
2208 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY))
2209 break;
2210 DELAY(1);
2211 }
2212 if (ntries == 100) {
2213 device_printf(sc->sc_dev, "could not write to RF\n");
2214 return;
2215 }
2216
2217 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 |
2218 (reg & 0x3);
2219 RAL_WRITE(sc, RT2560_RFCSR, tmp);
2220
2221 /* remember last written value in sc */
2222 sc->rf_regs[reg] = val;
2223
2224 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
2225}
2226
2227static void
2228rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c)
2229{
2230 struct ieee80211com *ic = &sc->sc_ic;
2231 uint8_t power, tmp;
2232 u_int i, chan;
2233
2234 chan = ieee80211_chan2ieee(ic, c);
2235 if (chan == 0 || chan == IEEE80211_CHAN_ANY)
2236 return;
2237
2238 if (IEEE80211_IS_CHAN_2GHZ(c))
2239 power = min(sc->txpow[chan - 1], 31);
2240 else
2241 power = 31;
2242
2243 /* adjust txpower using ifconfig settings */
2244 power -= (100 - ic->ic_txpowlimit) / 8;
2245
2246 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
2247
2248 switch (sc->rf_rev) {
2249 case RT2560_RF_2522:
2250 rt2560_rf_write(sc, RAL_RF1, 0x00814);
2251 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
2252 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2253 break;
2254
2255 case RT2560_RF_2523:
2256 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2257 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
2258 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
2259 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2260 break;
2261
2262 case RT2560_RF_2524:
2263 rt2560_rf_write(sc, RAL_RF1, 0x0c808);
2264 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
2265 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2266 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2267 break;
2268
2269 case RT2560_RF_2525:
2270 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2271 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
2272 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2273 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2274
2275 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2276 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
2277 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2278 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
2279 break;
2280
2281 case RT2560_RF_2525E:
2282 rt2560_rf_write(sc, RAL_RF1, 0x08808);
2283 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
2284 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2285 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
2286 break;
2287
2288 case RT2560_RF_2526:
2289 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
2290 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2291 rt2560_rf_write(sc, RAL_RF1, 0x08804);
2292
2293 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
2294 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
2295 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
2296 break;
2297
2298 /* dual-band RF */
2299 case RT2560_RF_5222:
2300 for (i = 0; rt2560_rf5222[i].chan != chan; i++);
2301
2302 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1);
2303 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
2304 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
2305 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4);
2306 break;
2307 default:
2308 printf("unknown ral rev=%d\n", sc->rf_rev);
2309 }
2310
2311 if (ic->ic_state != IEEE80211_S_SCAN) {
2312 /* set Japan filter bit for channel 14 */
2313 tmp = rt2560_bbp_read(sc, 70);
2314
2315 tmp &= ~RT2560_JAPAN_FILTER;
2316 if (chan == 14)
2317 tmp |= RT2560_JAPAN_FILTER;
2318
2319 rt2560_bbp_write(sc, 70, tmp);
2320
2321 /* clear CRC errors */
2322 RAL_READ(sc, RT2560_CNT0);
2323 }
2324}
2325
2326static void
2327rt2560_set_channel(struct ieee80211com *ic)
2328{
2329 struct ifnet *ifp = ic->ic_ifp;
2330 struct rt2560_softc *sc = ifp->if_softc;
2331
2332 RAL_LOCK(sc);
2333 rt2560_set_chan(sc, ic->ic_curchan);
2334 RAL_UNLOCK(sc);
2335
2336}
2337
2338#if 0
2339/*
2340 * Disable RF auto-tuning.
2341 */
2342static void
2343rt2560_disable_rf_tune(struct rt2560_softc *sc)
2344{
2345 uint32_t tmp;
2346
2347 if (sc->rf_rev != RT2560_RF_2523) {
2348 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
2349 rt2560_rf_write(sc, RAL_RF1, tmp);
2350 }
2351
2352 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
2353 rt2560_rf_write(sc, RAL_RF3, tmp);
2354
2355 DPRINTFN(2, ("disabling RF autotune\n"));
2356}
2357#endif
2358
2359/*
2360 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
2361 * synchronization.
2362 */
2363static void
2364rt2560_enable_tsf_sync(struct rt2560_softc *sc)
2365{
2366 struct ieee80211com *ic = &sc->sc_ic;
2367 uint16_t logcwmin, preload;
2368 uint32_t tmp;
2369
2370 /* first, disable TSF synchronization */
2371 RAL_WRITE(sc, RT2560_CSR14, 0);
2372
2373 tmp = 16 * ic->ic_bss->ni_intval;
2374 RAL_WRITE(sc, RT2560_CSR12, tmp);
2375
2376 RAL_WRITE(sc, RT2560_CSR13, 0);
2377
2378 logcwmin = 5;
2379 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
2380 tmp = logcwmin << 16 | preload;
2381 RAL_WRITE(sc, RT2560_BCNOCSR, tmp);
2382
2383 /* finally, enable TSF synchronization */
2384 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN;
2385 if (ic->ic_opmode == IEEE80211_M_STA)
2386 tmp |= RT2560_ENABLE_TSF_SYNC(1);
2387 else
2388 tmp |= RT2560_ENABLE_TSF_SYNC(2) |
2389 RT2560_ENABLE_BEACON_GENERATOR;
2390 RAL_WRITE(sc, RT2560_CSR14, tmp);
2391
2392 DPRINTF(("enabling TSF synchronization\n"));
2393}
2394
2395static void
2396rt2560_update_plcp(struct rt2560_softc *sc)
2397{
2398 struct ieee80211com *ic = &sc->sc_ic;
2399
2400 /* no short preamble for 1Mbps */
2401 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400);
2402
2403 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
2404 /* values taken from the reference driver */
2405 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401);
2406 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402);
2407 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403);
2408 } else {
2409 /* same values as above or'ed 0x8 */
2410 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409);
2411 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a);
2412 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b);
2413 }
2414
2415 DPRINTF(("updating PLCP for %s preamble\n",
2416 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
2417}
2418
2419/*
2420 * This function can be called by ieee80211_set_shortslottime(). Refer to
2421 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
2422 */
2423static void
2424rt2560_update_slot(struct ifnet *ifp)
2425{
2426 struct rt2560_softc *sc = ifp->if_softc;
2427 struct ieee80211com *ic = &sc->sc_ic;
2428 uint8_t slottime;
2429 uint16_t tx_sifs, tx_pifs, tx_difs, eifs;
2430 uint32_t tmp;
2431
2432 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
2433
2434 /* update the MAC slot boundaries */
2435 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND;
2436 tx_pifs = tx_sifs + slottime;
2437 tx_difs = tx_sifs + 2 * slottime;
2438 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60;
2439
2440 tmp = RAL_READ(sc, RT2560_CSR11);
2441 tmp = (tmp & ~0x1f00) | slottime << 8;
2442 RAL_WRITE(sc, RT2560_CSR11, tmp);
2443
2444 tmp = tx_pifs << 16 | tx_sifs;
2445 RAL_WRITE(sc, RT2560_CSR18, tmp);
2446
2447 tmp = eifs << 16 | tx_difs;
2448 RAL_WRITE(sc, RT2560_CSR19, tmp);
2449
2450 DPRINTF(("setting slottime to %uus\n", slottime));
2451}
2452
2453static void
2454rt2560_set_basicrates(struct rt2560_softc *sc)
2455{
2456 struct ieee80211com *ic = &sc->sc_ic;
2457
2458 /* update basic rate set */
2459 if (ic->ic_curmode == IEEE80211_MODE_11B) {
2460 /* 11b basic rates: 1, 2Mbps */
2461 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3);
2462 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) {
2463 /* 11a basic rates: 6, 12, 24Mbps */
2464 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150);
2465 } else {
2466 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */
2467 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f);
2468 }
2469}
2470
2471static void
2472rt2560_update_led(struct rt2560_softc *sc, int led1, int led2)
2473{
2474 uint32_t tmp;
2475
2476 /* set ON period to 70ms and OFF period to 30ms */
2477 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
2478 RAL_WRITE(sc, RT2560_LEDCSR, tmp);
2479}
2480
2481static void
2482rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid)
2483{
2484 uint32_t tmp;
2485
2486 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
2487 RAL_WRITE(sc, RT2560_CSR5, tmp);
2488
2489 tmp = bssid[4] | bssid[5] << 8;
2490 RAL_WRITE(sc, RT2560_CSR6, tmp);
2491
2492 DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
2493}
2494
2495static void
2496rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2497{
2498 uint32_t tmp;
2499
2500 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
2501 RAL_WRITE(sc, RT2560_CSR3, tmp);
2502
2503 tmp = addr[4] | addr[5] << 8;
2504 RAL_WRITE(sc, RT2560_CSR4, tmp);
2505
2506 DPRINTF(("setting MAC address to %6D\n", addr, ":"));
2507}
2508
2509static void
2510rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr)
2511{
2512 uint32_t tmp;
2513
2514 tmp = RAL_READ(sc, RT2560_CSR3);
2515 addr[0] = tmp & 0xff;
2516 addr[1] = (tmp >> 8) & 0xff;
2517 addr[2] = (tmp >> 16) & 0xff;
2518 addr[3] = (tmp >> 24);
2519
2520 tmp = RAL_READ(sc, RT2560_CSR4);
2521 addr[4] = tmp & 0xff;
2522 addr[5] = (tmp >> 8) & 0xff;
2523}
2524
2525static void
2526rt2560_update_promisc(struct rt2560_softc *sc)
2527{
2528 struct ifnet *ifp = sc->sc_ic.ic_ifp;
2529 uint32_t tmp;
2530
2531 tmp = RAL_READ(sc, RT2560_RXCSR0);
2532
2533 tmp &= ~RT2560_DROP_NOT_TO_ME;
2534 if (!(ifp->if_flags & IFF_PROMISC))
2535 tmp |= RT2560_DROP_NOT_TO_ME;
2536
2537 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2538
2539 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
2540 "entering" : "leaving"));
2541}
2542
2543static const char *
2544rt2560_get_rf(int rev)
2545{
2546 switch (rev) {
2547 case RT2560_RF_2522: return "RT2522";
2548 case RT2560_RF_2523: return "RT2523";
2549 case RT2560_RF_2524: return "RT2524";
2550 case RT2560_RF_2525: return "RT2525";
2551 case RT2560_RF_2525E: return "RT2525e";
2552 case RT2560_RF_2526: return "RT2526";
2553 case RT2560_RF_5222: return "RT5222";
2554 default: return "unknown";
2555 }
2556}
2557
2558static void
2559rt2560_read_eeprom(struct rt2560_softc *sc)
2560{
2561 uint16_t val;
2562 int i;
2563
2564 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
2565 sc->rf_rev = (val >> 11) & 0x7;
2566 sc->hw_radio = (val >> 10) & 0x1;
2567 sc->led_mode = (val >> 6) & 0x7;
2568 sc->rx_ant = (val >> 4) & 0x3;
2569 sc->tx_ant = (val >> 2) & 0x3;
2570 sc->nb_ant = val & 0x3;
2571
2572 /* read default values for BBP registers */
2573 for (i = 0; i < 16; i++) {
2574 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
2575 sc->bbp_prom[i].reg = val >> 8;
2576 sc->bbp_prom[i].val = val & 0xff;
2577 }
2578
2579 /* read Tx power for all b/g channels */
2580 for (i = 0; i < 14 / 2; i++) {
2581 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
2582 sc->txpow[i * 2] = val >> 8;
2583 sc->txpow[i * 2 + 1] = val & 0xff;
2584 }
2585
2586 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);
2587 if ((val & 0xff) == 0xff)
2588 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR;
2589 else
2590 sc->rssi_corr = val & 0xff;
2591 DPRINTF(("rssi correction %d, calibrate 0x%02x\n",
2592 sc->rssi_corr, val));
2593}
2594
2595
2596static void
2597rt2560_scan_start(struct ieee80211com *ic)
2598{
2599 struct ifnet *ifp = ic->ic_ifp;
2600 struct rt2560_softc *sc = ifp->if_softc;
2601
2602 /* abort TSF synchronization */
2603 RAL_WRITE(sc, RT2560_CSR14, 0);
2604 rt2560_set_bssid(sc, ifp->if_broadcastaddr);
2605}
2606
2607static void
2608rt2560_scan_end(struct ieee80211com *ic)
2609{
2610 struct ifnet *ifp = ic->ic_ifp;
2611 struct rt2560_softc *sc = ifp->if_softc;
2612
2613 rt2560_enable_tsf_sync(sc);
2614 /* XXX keep local copy */
2615 rt2560_set_bssid(sc, ic->ic_bss->ni_bssid);
2616}
2617
2618static int
2619rt2560_bbp_init(struct rt2560_softc *sc)
2620{
2621#define N(a) (sizeof (a) / sizeof ((a)[0]))
2622 int i, ntries;
2623
2624 /* wait for BBP to be ready */
2625 for (ntries = 0; ntries < 100; ntries++) {
2626 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0)
2627 break;
2628 DELAY(1);
2629 }
2630 if (ntries == 100) {
2631 device_printf(sc->sc_dev, "timeout waiting for BBP\n");
2632 return EIO;
2633 }
2634
2635 /* initialize BBP registers to default values */
2636 for (i = 0; i < N(rt2560_def_bbp); i++) {
2637 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg,
2638 rt2560_def_bbp[i].val);
2639 }
2640#if 0
2641 /* initialize BBP registers to values stored in EEPROM */
2642 for (i = 0; i < 16; i++) {
2643 if (sc->bbp_prom[i].reg == 0xff)
2644 continue;
2645 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
2646 }
2647#endif
2648
2649 return 0;
2650#undef N
2651}
2652
2653static void
2654rt2560_set_txantenna(struct rt2560_softc *sc, int antenna)
2655{
2656 uint32_t tmp;
2657 uint8_t tx;
2658
2659 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK;
2660 if (antenna == 1)
2661 tx |= RT2560_BBP_ANTA;
2662 else if (antenna == 2)
2663 tx |= RT2560_BBP_ANTB;
2664 else
2665 tx |= RT2560_BBP_DIVERSITY;
2666
2667 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
2668 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 ||
2669 sc->rf_rev == RT2560_RF_5222)
2670 tx |= RT2560_BBP_FLIPIQ;
2671
2672 rt2560_bbp_write(sc, RT2560_BBP_TX, tx);
2673
2674 /* update values for CCK and OFDM in BBPCSR1 */
2675 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007;
2676 tmp |= (tx & 0x7) << 16 | (tx & 0x7);
2677 RAL_WRITE(sc, RT2560_BBPCSR1, tmp);
2678}
2679
2680static void
2681rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna)
2682{
2683 uint8_t rx;
2684
2685 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK;
2686 if (antenna == 1)
2687 rx |= RT2560_BBP_ANTA;
2688 else if (antenna == 2)
2689 rx |= RT2560_BBP_ANTB;
2690 else
2691 rx |= RT2560_BBP_DIVERSITY;
2692
2693 /* need to force no I/Q flip for RF 2525e and 2526 */
2694 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526)
2695 rx &= ~RT2560_BBP_FLIPIQ;
2696
2697 rt2560_bbp_write(sc, RT2560_BBP_RX, rx);
2698}
2699
2700static void
2701rt2560_init(void *priv)
2702{
2703#define N(a) (sizeof (a) / sizeof ((a)[0]))
2704 struct rt2560_softc *sc = priv;
2705 struct ieee80211com *ic = &sc->sc_ic;
2706 struct ifnet *ifp = ic->ic_ifp;
2707 uint32_t tmp;
2708 int i;
2709
2710
2711
2712 rt2560_stop(sc);
2713
2714 RAL_LOCK(sc);
2715 /* setup tx rings */
2716 tmp = RT2560_PRIO_RING_COUNT << 24 |
2717 RT2560_ATIM_RING_COUNT << 16 |
2718 RT2560_TX_RING_COUNT << 8 |
2719 RT2560_TX_DESC_SIZE;
2720
2721 /* rings must be initialized in this exact order */
2722 RAL_WRITE(sc, RT2560_TXCSR2, tmp);
2723 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr);
2724 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr);
2725 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr);
2726 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr);
2727
2728 /* setup rx ring */
2729 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE;
2730
2731 RAL_WRITE(sc, RT2560_RXCSR1, tmp);
2732 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr);
2733
2734 /* initialize MAC registers to default values */
2735 for (i = 0; i < N(rt2560_def_mac); i++)
2736 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val);
2737
2738 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
2739 rt2560_set_macaddr(sc, ic->ic_myaddr);
2740
2741 /* set basic rate set (will be updated later) */
2742 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153);
2743
2744 rt2560_set_txantenna(sc, sc->tx_ant);
2745 rt2560_set_rxantenna(sc, sc->rx_ant);
2746 rt2560_update_slot(ifp);
2747 rt2560_update_plcp(sc);
2748 rt2560_update_led(sc, 0, 0);
2749
2750 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2751 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
2752
2753 if (rt2560_bbp_init(sc) != 0) {
2754 rt2560_stop(sc);
2755 RAL_UNLOCK(sc);
2756 return;
2757 }
2758
2759 /* set default BSS channel */
2760 rt2560_set_chan(sc, ic->ic_curchan);
2761
2762 /* kick Rx */
2763 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR;
2764 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2765 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR;
2766 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
2767 tmp |= RT2560_DROP_TODS;
2768 if (!(ifp->if_flags & IFF_PROMISC))
2769 tmp |= RT2560_DROP_NOT_TO_ME;
2770 }
2771 RAL_WRITE(sc, RT2560_RXCSR0, tmp);
2772
2773 /* clear old FCS and Rx FIFO errors */
2774 RAL_READ(sc, RT2560_CNT0);
2775 RAL_READ(sc, RT2560_CNT4);
2776
2777 /* clear any pending interrupts */
2778 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff);
2779
2780 /* enable interrupts */
2781 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK);
2782
2783 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
2784 ifp->if_drv_flags |= IFF_DRV_RUNNING;
2785
2786 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
2787 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
2788 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
2789 } else
2790 ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
2791
2792 RAL_UNLOCK(sc);
2793#undef N
2794}
2795
2796void
2797rt2560_stop(void *arg)
2798{
2799 struct rt2560_softc *sc = arg;
2800 struct ieee80211com *ic = &sc->sc_ic;
2801 struct ifnet *ifp = ic->ic_ifp;
2802 volatile int *flags = &sc->sc_flags;
2803
2804 while (*flags & RAL_INPUT_RUNNING) {
2805 tsleep(sc, 0, "ralrunning", hz/10);
2806 }
2807
2808 RAL_LOCK(sc);
2809 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2810 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
2811 sc->sc_tx_timer = 0;
2812 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2813
2814 /* abort Tx */
2815 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX);
2816
2817 /* disable Rx */
2818 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX);
2819
2820 /* reset ASIC (imply reset BBP) */
2821 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC);
2822 RAL_WRITE(sc, RT2560_CSR1, 0);
2823
2824 /* disable interrupts */
2825 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
2826
2827 /* reset Tx and Rx rings */
2828 rt2560_reset_tx_ring(sc, &sc->txq);
2829 rt2560_reset_tx_ring(sc, &sc->atimq);
2830 rt2560_reset_tx_ring(sc, &sc->prioq);
2831 rt2560_reset_tx_ring(sc, &sc->bcnq);
2832 rt2560_reset_rx_ring(sc, &sc->rxq);
2833 }
2834 RAL_UNLOCK(sc);
2835}
2836
2837static int
2838rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2839 const struct ieee80211_bpf_params *params)
2840{
2841 struct ieee80211com *ic = ni->ni_ic;
2842 struct ifnet *ifp = ic->ic_ifp;
2843 struct rt2560_softc *sc = ifp->if_softc;
2844
2845 RAL_LOCK(sc);
2846
2847 /* prevent management frames from being sent if we're not ready */
2848 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2849 RAL_UNLOCK(sc);
2850 m_freem(m);
2851 ieee80211_free_node(ni);
2852 return ENETDOWN;
2853 }
2854 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) {
2855 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2856 RAL_UNLOCK(sc);
2857 m_freem(m);
2858 ieee80211_free_node(ni);
2859 return ENOBUFS; /* XXX */
2860 }
2861
2862 if (bpf_peers_present(ic->ic_rawbpf))
2863 bpf_mtap(ic->ic_rawbpf, m);
2864
2865 ifp->if_opackets++;
2866
2867 if (params == NULL) {
2868 /*
2869 * Legacy path; interpret frame contents to decide
2870 * precisely how to send the frame.
2871 */
2872 if (rt2560_tx_mgt(sc, m, ni) != 0)
2873 goto bad;
2874 } else {
2875 /*
2876 * Caller supplied explicit parameters to use in
2877 * sending the frame.
2878 */
2879 if (rt2560_tx_raw(sc, m, ni, params))
2880 goto bad;
2881 }
2882 sc->sc_tx_timer = 5;
2883 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc);
2884
2885 RAL_UNLOCK(sc);
2886
2887 return 0;
2888bad:
2889 ifp->if_oerrors++;
2890 ieee80211_free_node(ni);
2891 RAL_UNLOCK(sc);
2892 return EIO; /* XXX */
2893}
2894
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