3 * Damien Bergamini <damien.bergamini@free.fr>
5 * Benjamin Close <benjsc@FreeBSD.org>
6 * Copyright (c) 2008 Sam Leffler, Errno Consulting
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 * Driver for Intel Wireless WiFi Link 4965AGN 802.11 network adapters.
25 #include <sys/cdefs.h>
26 __FBSDID("$FreeBSD$");
28 #include <sys/param.h>
29 #include <sys/sockio.h>
30 #include <sys/sysctl.h>
32 #include <sys/kernel.h>
33 #include <sys/socket.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
38 #include <sys/endian.h>
39 #include <sys/firmware.h>
40 #include <sys/limits.h>
41 #include <sys/module.h>
42 #include <sys/queue.h>
43 #include <sys/taskqueue.h>
45 #include <machine/bus.h>
46 #include <machine/resource.h>
47 #include <machine/clock.h>
49 #include <dev/pci/pcireg.h>
50 #include <dev/pci/pcivar.h>
54 #include <net/if_arp.h>
55 #include <net/ethernet.h>
56 #include <net/if_dl.h>
57 #include <net/if_media.h>
58 #include <net/if_types.h>
60 #include <netinet/in.h>
61 #include <netinet/in_systm.h>
62 #include <netinet/in_var.h>
63 #include <netinet/if_ether.h>
64 #include <netinet/ip.h>
66 #include <net80211/ieee80211_var.h>
67 #include <net80211/ieee80211_amrr.h>
68 #include <net80211/ieee80211_radiotap.h>
69 #include <net80211/ieee80211_regdomain.h>
71 #include <dev/iwn/if_iwnreg.h>
72 #include <dev/iwn/if_iwnvar.h>
74 static int iwn_probe(device_t);
75 static int iwn_attach(device_t);
76 static int iwn_detach(device_t);
77 static int iwn_cleanup(device_t);
78 static struct ieee80211vap *iwn_vap_create(struct ieee80211com *,
79 const char name[IFNAMSIZ], int unit, int opmode,
80 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
81 const uint8_t mac[IEEE80211_ADDR_LEN]);
82 static void iwn_vap_delete(struct ieee80211vap *);
83 static int iwn_shutdown(device_t);
84 static int iwn_suspend(device_t);
85 static int iwn_resume(device_t);
86 static int iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *,
87 void **, bus_size_t, bus_size_t, int);
88 static void iwn_dma_contig_free(struct iwn_dma_info *);
89 int iwn_alloc_shared(struct iwn_softc *);
90 void iwn_free_shared(struct iwn_softc *);
91 int iwn_alloc_kw(struct iwn_softc *);
92 void iwn_free_kw(struct iwn_softc *);
93 int iwn_alloc_fwmem(struct iwn_softc *);
94 void iwn_free_fwmem(struct iwn_softc *);
95 struct iwn_rbuf *iwn_alloc_rbuf(struct iwn_softc *);
96 void iwn_free_rbuf(void *, void *);
97 int iwn_alloc_rpool(struct iwn_softc *);
98 void iwn_free_rpool(struct iwn_softc *);
99 int iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
100 void iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
101 void iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *);
102 int iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *,
104 void iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
105 void iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *);
106 static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *,
107 const uint8_t [IEEE80211_ADDR_LEN]);
108 void iwn_newassoc(struct ieee80211_node *, int);
109 int iwn_media_change(struct ifnet *);
110 int iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
111 void iwn_mem_lock(struct iwn_softc *);
112 void iwn_mem_unlock(struct iwn_softc *);
113 uint32_t iwn_mem_read(struct iwn_softc *, uint32_t);
114 void iwn_mem_write(struct iwn_softc *, uint32_t, uint32_t);
115 void iwn_mem_write_region_4(struct iwn_softc *, uint32_t,
116 const uint32_t *, int);
117 int iwn_eeprom_lock(struct iwn_softc *);
118 void iwn_eeprom_unlock(struct iwn_softc *);
119 int iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int);
120 int iwn_transfer_microcode(struct iwn_softc *, const uint8_t *, int);
121 int iwn_transfer_firmware(struct iwn_softc *);
122 int iwn_load_firmware(struct iwn_softc *);
123 void iwn_unload_firmware(struct iwn_softc *);
124 static void iwn_timer_timeout(void *);
125 static void iwn_calib_reset(struct iwn_softc *);
126 void iwn_ampdu_rx_start(struct iwn_softc *, struct iwn_rx_desc *);
127 void iwn_rx_intr(struct iwn_softc *, struct iwn_rx_desc *,
128 struct iwn_rx_data *);
129 void iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *);
130 void iwn_tx_intr(struct iwn_softc *, struct iwn_rx_desc *);
131 void iwn_cmd_intr(struct iwn_softc *, struct iwn_rx_desc *);
132 static void iwn_bmiss(void *, int);
133 void iwn_notif_intr(struct iwn_softc *);
134 void iwn_intr(void *);
135 void iwn_read_eeprom(struct iwn_softc *);
136 static void iwn_read_eeprom_channels(struct iwn_softc *);
137 void iwn_print_power_group(struct iwn_softc *, int);
138 uint8_t iwn_plcp_signal(int);
139 int iwn_tx_data(struct iwn_softc *, struct mbuf *,
140 struct ieee80211_node *, struct iwn_tx_ring *);
141 void iwn_start(struct ifnet *);
142 void iwn_start_locked(struct ifnet *);
143 static int iwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
144 const struct ieee80211_bpf_params *);
145 static void iwn_watchdog(struct iwn_softc *);
146 int iwn_ioctl(struct ifnet *, u_long, caddr_t);
147 int iwn_cmd(struct iwn_softc *, int, const void *, int, int);
148 int iwn_set_link_quality(struct iwn_softc *, uint8_t,
149 const struct ieee80211_channel *, int);
150 int iwn_set_key(struct ieee80211com *, struct ieee80211_node *,
151 const struct ieee80211_key *);
152 int iwn_wme_update(struct ieee80211com *);
153 void iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t);
154 int iwn_set_critical_temp(struct iwn_softc *);
155 void iwn_enable_tsf(struct iwn_softc *, struct ieee80211_node *);
156 void iwn_power_calibration(struct iwn_softc *, int);
157 int iwn_set_txpower(struct iwn_softc *,
158 struct ieee80211_channel *, int);
159 int8_t iwn_get_rssi(struct iwn_softc *, const struct iwn_rx_stat *);
160 int iwn_get_noise(const struct iwn_rx_general_stats *);
161 int iwn_get_temperature(struct iwn_softc *);
162 int iwn_init_sensitivity(struct iwn_softc *);
163 void iwn_compute_differential_gain(struct iwn_softc *,
164 const struct iwn_rx_general_stats *);
165 void iwn_tune_sensitivity(struct iwn_softc *,
166 const struct iwn_rx_stats *);
167 int iwn_send_sensitivity(struct iwn_softc *);
168 int iwn_auth(struct iwn_softc *);
169 int iwn_run(struct iwn_softc *);
170 int iwn_scan(struct iwn_softc *);
171 int iwn_config(struct iwn_softc *);
172 void iwn_post_alive(struct iwn_softc *);
173 void iwn_stop_master(struct iwn_softc *);
174 int iwn_reset(struct iwn_softc *);
175 void iwn_hw_config(struct iwn_softc *);
176 void iwn_init_locked(struct iwn_softc *);
177 void iwn_init(void *);
178 void iwn_stop_locked(struct iwn_softc *);
179 void iwn_stop(struct iwn_softc *);
180 static void iwn_scan_start(struct ieee80211com *);
181 static void iwn_scan_end(struct ieee80211com *);
182 static void iwn_set_channel(struct ieee80211com *);
183 static void iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long);
184 static void iwn_scan_mindwell(struct ieee80211_scan_state *);
185 static void iwn_ops(void *, int);
186 static int iwn_queue_cmd( struct iwn_softc *, int, int, int);
187 static void iwn_bpfattach(struct iwn_softc *);
188 static void iwn_sysctlattach(struct iwn_softc *);
193 IWN_DEBUG_XMIT = 0x00000001, /* basic xmit operation */
194 IWN_DEBUG_RECV = 0x00000002, /* basic recv operation */
195 IWN_DEBUG_STATE = 0x00000004, /* 802.11 state transitions */
196 IWN_DEBUG_TXPOW = 0x00000008, /* tx power processing */
197 IWN_DEBUG_RESET = 0x00000010, /* reset processing */
198 IWN_DEBUG_OPS = 0x00000020, /* iwn_ops processing */
199 IWN_DEBUG_BEACON = 0x00000040, /* beacon handling */
200 IWN_DEBUG_WATCHDOG = 0x00000080, /* watchdog timeout */
201 IWN_DEBUG_INTR = 0x00000100, /* ISR */
202 IWN_DEBUG_CALIBRATE = 0x00000200, /* periodic calibration */
203 IWN_DEBUG_NODE = 0x00000400, /* node management */
204 IWN_DEBUG_LED = 0x00000800, /* led management */
205 IWN_DEBUG_CMD = 0x00001000, /* cmd submission */
206 IWN_DEBUG_FATAL = 0x80000000, /* fatal errors */
207 IWN_DEBUG_ANY = 0xffffffff
210 #define DPRINTF(sc, m, fmt, ...) do { \
211 if (sc->sc_debug & (m)) \
212 printf(fmt, __VA_ARGS__); \
215 static const char *iwn_ops_str(int);
216 static const char *iwn_intr_str(uint8_t);
218 #define DPRINTF(sc, m, fmt, ...) do { (void) sc; } while (0)
227 static const struct iwn_ident iwn_ident_table [] = {
228 { 0x8086, 0x4229, "Intel(R) PRO/Wireless 4965BGN" },
229 { 0x8086, 0x422D, "Intel(R) PRO/Wireless 4965BGN" },
230 { 0x8086, 0x4230, "Intel(R) PRO/Wireless 4965BGN" },
231 { 0x8086, 0x4233, "Intel(R) PRO/Wireless 4965BGN" },
236 iwn_probe(device_t dev)
238 const struct iwn_ident *ident;
240 for (ident = iwn_ident_table; ident->name != NULL; ident++) {
241 if (pci_get_vendor(dev) == ident->vendor &&
242 pci_get_device(dev) == ident->device) {
243 device_set_desc(dev, ident->name);
251 iwn_attach(device_t dev)
253 struct iwn_softc *sc = (struct iwn_softc *)device_get_softc(dev);
254 struct ieee80211com *ic;
261 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
262 device_printf(dev, "chip is in D%d power mode "
263 "-- setting to D0\n", pci_get_powerstate(dev));
264 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
267 /* clear device specific PCI configuration register 0x41 */
268 pci_write_config(dev, 0x41, 0, 1);
270 /* enable bus-mastering */
271 pci_enable_busmaster(dev);
273 sc->mem_rid= PCIR_BAR(0);
274 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
276 if (sc->mem == NULL ) {
277 device_printf(dev, "could not allocate memory resources\n");
282 sc->sc_st = rman_get_bustag(sc->mem);
283 sc->sc_sh = rman_get_bushandle(sc->mem);
285 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
286 RF_ACTIVE | RF_SHAREABLE);
287 if (sc->irq == NULL) {
288 device_printf(dev, "could not allocate interrupt resource\n");
294 IWN_CMD_LOCK_INIT(sc);
295 callout_init_mtx(&sc->sc_timer_to, &sc->sc_mtx, 0);
298 * Create the taskqueues used by the driver. Primarily
299 * sc_tq handles most the task
301 sc->sc_tq = taskqueue_create("iwn_taskq", M_NOWAIT | M_ZERO,
302 taskqueue_thread_enqueue, &sc->sc_tq);
303 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
304 device_get_nameunit(dev));
306 TASK_INIT(&sc->sc_ops_task, 0, iwn_ops, sc );
307 TASK_INIT(&sc->sc_bmiss_task, 0, iwn_bmiss, sc);
310 * Put adapter into a known state.
312 error = iwn_reset(sc);
315 "could not reset adapter, error %d\n", error);
320 * Allocate DMA memory for firmware transfers.
322 error = iwn_alloc_fwmem(sc);
325 "could not allocate firmware memory, error %d\n", error);
330 * Allocate a "keep warm" page.
332 error = iwn_alloc_kw(sc);
335 "could not allocate keep-warm page, error %d\n", error);
340 * Allocate shared area (communication area).
342 error = iwn_alloc_shared(sc);
345 "could not allocate shared area, error %d\n", error);
352 for (i = 0; i < IWN_NTXQUEUES; i++) {
353 error = iwn_alloc_tx_ring(sc, &sc->txq[i], i);
356 "could not allocate Tx ring %d, error %d\n",
362 error = iwn_alloc_rx_ring(sc, &sc->rxq);
365 "could not allocate Rx ring, error %d\n", error);
369 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
371 device_printf(dev, "can not allocate ifnet structure\n");
377 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
378 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
380 /* set device capabilities */
382 IEEE80211_C_STA /* station mode supported */
383 | IEEE80211_C_MONITOR /* monitor mode supported */
384 | IEEE80211_C_TXPMGT /* tx power management */
385 | IEEE80211_C_SHSLOT /* short slot time supported */
387 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
389 | IEEE80211_C_BGSCAN /* background scanning */
390 | IEEE80211_C_IBSS /* ibss/adhoc mode */
392 | IEEE80211_C_WME /* WME */
395 /* XXX disable until HT channel setup works */
397 IEEE80211_HTCAP_SMPS_ENA /* SM PS mode enabled */
398 | IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width */
399 | IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */
400 | IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */
401 | IEEE80211_HTCAP_RXSTBC_2STREAM/* 1-2 spatial streams */
402 | IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
403 /* s/w capabilities */
404 | IEEE80211_HTC_HT /* HT operation */
405 | IEEE80211_HTC_AMPDU /* tx A-MPDU */
406 | IEEE80211_HTC_AMSDU /* tx A-MSDU */
409 /* read supported channels and MAC address from EEPROM */
412 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
414 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
415 ifp->if_init = iwn_init;
416 ifp->if_ioctl = iwn_ioctl;
417 ifp->if_start = iwn_start;
418 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
419 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
420 IFQ_SET_READY(&ifp->if_snd);
422 ieee80211_ifattach(ic);
423 ic->ic_vap_create = iwn_vap_create;
424 ic->ic_vap_delete = iwn_vap_delete;
425 ic->ic_raw_xmit = iwn_raw_xmit;
426 ic->ic_node_alloc = iwn_node_alloc;
427 ic->ic_newassoc = iwn_newassoc;
428 ic->ic_wme.wme_update = iwn_wme_update;
429 ic->ic_scan_start = iwn_scan_start;
430 ic->ic_scan_end = iwn_scan_end;
431 ic->ic_set_channel = iwn_set_channel;
432 ic->ic_scan_curchan = iwn_scan_curchan;
433 ic->ic_scan_mindwell = iwn_scan_mindwell;
436 iwn_sysctlattach(sc);
439 * Hook our interrupt after all initialization is complete.
441 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
442 NULL, iwn_intr, sc, &sc->sc_ih);
444 device_printf(dev, "could not set up interrupt, error %d\n", error);
448 ieee80211_announce(ic);
456 iwn_detach(device_t dev)
463 * Cleanup any device resources that were allocated
466 iwn_cleanup(device_t dev)
468 struct iwn_softc *sc = device_get_softc(dev);
469 struct ifnet *ifp = sc->sc_ifp;
470 struct ieee80211com *ic = ifp->if_l2com;
475 callout_drain(&sc->sc_timer_to);
477 ieee80211_ifdetach(ic);
480 iwn_unload_firmware(sc);
482 iwn_free_rx_ring(sc, &sc->rxq);
483 for (i = 0; i < IWN_NTXQUEUES; i++)
484 iwn_free_tx_ring(sc, &sc->txq[i]);
487 if (sc->irq != NULL) {
488 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
489 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
492 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
495 taskqueue_free(sc->sc_tq);
496 IWN_CMD_LOCK_DESTROY(sc);
497 IWN_LOCK_DESTROY(sc);
501 static struct ieee80211vap *
502 iwn_vap_create(struct ieee80211com *ic,
503 const char name[IFNAMSIZ], int unit, int opmode, int flags,
504 const uint8_t bssid[IEEE80211_ADDR_LEN],
505 const uint8_t mac[IEEE80211_ADDR_LEN])
508 struct ieee80211vap *vap;
510 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
512 ivp = (struct iwn_vap *) malloc(sizeof(struct iwn_vap),
513 M_80211_VAP, M_NOWAIT | M_ZERO);
517 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
518 vap->iv_bmissthreshold = 10; /* override default */
519 /* override with driver methods */
520 ivp->iv_newstate = vap->iv_newstate;
521 vap->iv_newstate = iwn_newstate;
523 ieee80211_amrr_init(&ivp->iv_amrr, vap,
524 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD,
525 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD,
529 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
530 ic->ic_opmode = opmode;
535 iwn_vap_delete(struct ieee80211vap *vap)
537 struct iwn_vap *ivp = IWN_VAP(vap);
539 ieee80211_amrr_cleanup(&ivp->iv_amrr);
540 ieee80211_vap_detach(vap);
541 free(ivp, M_80211_VAP);
545 iwn_shutdown(device_t dev)
547 struct iwn_softc *sc = device_get_softc(dev);
554 iwn_suspend(device_t dev)
556 struct iwn_softc *sc = device_get_softc(dev);
563 iwn_resume(device_t dev)
565 struct iwn_softc *sc = device_get_softc(dev);
566 struct ifnet *ifp = sc->sc_ifp;
568 pci_write_config(dev, 0x41, 0, 1);
570 if (ifp->if_flags & IFF_UP)
576 iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
580 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
581 *(bus_addr_t *)arg = segs[0].ds_addr;
585 iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma,
586 void **kvap, bus_size_t size, bus_size_t alignment, int flags)
588 int error, lalignment, i;
591 * FreeBSD can't guarrenty 16k alignment at the moment (11/2007) so
592 * we allocate an extra 12k with 4k alignement and walk through
593 * it trying to find where the alignment is. It's a nasty fix for
596 DPRINTF(sc, IWN_DEBUG_RESET,
597 "Size: %zd - alignment %zd\n", size, alignment);
598 if (alignment == 0x4000) {
601 DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
602 "Attempting to find a 16k boundary");
604 lalignment = alignment;
608 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), lalignment,
609 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
610 1, size, flags, NULL, NULL, &dma->tag);
612 device_printf(sc->sc_dev,
613 "%s: bus_dma_tag_create failed, error %d\n",
617 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
618 flags | BUS_DMA_ZERO, &dma->map);
620 device_printf(sc->sc_dev,
621 "%s: bus_dmamem_alloc failed, error %d\n",
625 if (alignment == 0x4000) {
626 for (i = 0; i < 3 && (((uintptr_t)dma->vaddr) & 0x3fff); i++) {
627 DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
628 "Memory Unaligned, shifting pointer by 4k");
632 if ((((uintptr_t)dma->vaddr ) & (alignment-1))) {
633 DPRINTF(sc, IWN_DEBUG_ANY,
634 "%s: failed to align memory, vaddr %p, align %zd\n",
635 __func__, dma->vaddr, alignment);
641 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr,
642 size, iwn_dma_map_addr, &dma->paddr, flags);
644 device_printf(sc->sc_dev,
645 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
653 iwn_dma_contig_free(dma);
658 iwn_dma_contig_free(struct iwn_dma_info *dma)
660 if (dma->tag != NULL) {
661 if (dma->map != NULL) {
662 if (dma->paddr == 0) {
663 bus_dmamap_sync(dma->tag, dma->map,
664 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
665 bus_dmamap_unload(dma->tag, dma->map);
667 bus_dmamem_free(dma->tag, &dma->vaddr, dma->map);
669 bus_dma_tag_destroy(dma->tag);
674 iwn_alloc_shared(struct iwn_softc *sc)
676 /* must be aligned on a 1KB boundary */
677 return iwn_dma_contig_alloc(sc, &sc->shared_dma,
678 (void **)&sc->shared, sizeof (struct iwn_shared), 1024,
683 iwn_free_shared(struct iwn_softc *sc)
685 iwn_dma_contig_free(&sc->shared_dma);
689 iwn_alloc_kw(struct iwn_softc *sc)
691 /* must be aligned on a 4k boundary */
692 return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL,
693 PAGE_SIZE, PAGE_SIZE, BUS_DMA_NOWAIT);
697 iwn_free_kw(struct iwn_softc *sc)
699 iwn_dma_contig_free(&sc->kw_dma);
703 iwn_alloc_fwmem(struct iwn_softc *sc)
705 /* allocate enough contiguous space to store text and data */
706 return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL,
707 IWN_FW_MAIN_TEXT_MAXSZ + IWN_FW_MAIN_DATA_MAXSZ, 16,
712 iwn_free_fwmem(struct iwn_softc *sc)
714 iwn_dma_contig_free(&sc->fw_dma);
718 iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
724 error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
725 (void **)&ring->desc, IWN_RX_RING_COUNT * sizeof (uint32_t),
726 IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
728 device_printf(sc->sc_dev,
729 "%s: could not allocate rx ring DMA memory, error %d\n",
734 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
735 BUS_SPACE_MAXADDR_32BIT,
736 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
737 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
739 device_printf(sc->sc_dev,
740 "%s: bus_dma_tag_create_failed, error %d\n",
748 for (i = 0; i < IWN_RX_RING_COUNT; i++) {
749 struct iwn_rx_data *data = &ring->data[i];
753 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
755 device_printf(sc->sc_dev,
756 "%s: bus_dmamap_create failed, error %d\n",
760 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
762 device_printf(sc->sc_dev,
763 "%s: could not allocate rx mbuf\n", __func__);
768 error = bus_dmamap_load(ring->data_dmat, data->map,
769 mtod(m, caddr_t), MJUMPAGESIZE,
770 iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
771 if (error != 0 && error != EFBIG) {
772 device_printf(sc->sc_dev,
773 "%s: bus_dmamap_load failed, error %d\n",
776 error = ENOMEM; /* XXX unique code */
779 bus_dmamap_sync(ring->data_dmat, data->map,
780 BUS_DMASYNC_PREWRITE);
783 /* Rx buffers are aligned on a 256-byte boundary */
784 ring->desc[i] = htole32(paddr >> 8);
786 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
787 BUS_DMASYNC_PREWRITE);
790 iwn_free_rx_ring(sc, ring);
795 iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
801 IWN_WRITE(sc, IWN_RX_CONFIG, 0);
802 for (ntries = 0; ntries < 100; ntries++) {
803 if (IWN_READ(sc, IWN_RX_STATUS) & IWN_RX_IDLE)
809 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n", "timeout resetting Rx ring");
817 iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
821 iwn_dma_contig_free(&ring->desc_dma);
823 for (i = 0; i < IWN_RX_RING_COUNT; i++)
824 if (ring->data[i].m != NULL)
825 m_freem(ring->data[i].m);
829 iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
838 size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_desc);
839 error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
840 (void **)&ring->desc, size, IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
842 device_printf(sc->sc_dev,
843 "%s: could not allocate tx ring DMA memory, error %d\n",
848 size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_cmd);
849 error = iwn_dma_contig_alloc(sc, &ring->cmd_dma,
850 (void **)&ring->cmd, size, 4, BUS_DMA_NOWAIT);
852 device_printf(sc->sc_dev,
853 "%s: could not allocate tx cmd DMA memory, error %d\n",
858 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
859 BUS_SPACE_MAXADDR_32BIT,
860 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWN_MAX_SCATTER - 1,
861 MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
863 device_printf(sc->sc_dev,
864 "%s: bus_dma_tag_create_failed, error %d\n",
869 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
870 struct iwn_tx_data *data = &ring->data[i];
872 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
874 device_printf(sc->sc_dev,
875 "%s: bus_dmamap_create failed, error %d\n",
879 bus_dmamap_sync(ring->data_dmat, data->map,
880 BUS_DMASYNC_PREWRITE);
884 iwn_free_tx_ring(sc, ring);
889 iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
896 IWN_WRITE(sc, IWN_TX_CONFIG(ring->qid), 0);
897 for (ntries = 0; ntries < 20; ntries++) {
898 tmp = IWN_READ(sc, IWN_TX_STATUS);
899 if ((tmp & IWN_TX_IDLE(ring->qid)) == IWN_TX_IDLE(ring->qid))
905 DPRINTF(sc, IWN_DEBUG_RESET,
906 "%s: timeout resetting Tx ring %d\n", __func__, ring->qid);
910 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
911 struct iwn_tx_data *data = &ring->data[i];
913 if (data->m != NULL) {
914 bus_dmamap_unload(ring->data_dmat, data->map);
925 iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
929 iwn_dma_contig_free(&ring->desc_dma);
930 iwn_dma_contig_free(&ring->cmd_dma);
932 if (ring->data != NULL) {
933 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
934 struct iwn_tx_data *data = &ring->data[i];
936 if (data->m != NULL) {
937 bus_dmamap_unload(ring->data_dmat, data->map);
944 struct ieee80211_node *
945 iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
947 return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO);
951 iwn_newassoc(struct ieee80211_node *ni, int isnew)
953 struct ieee80211vap *vap = ni->ni_vap;
955 ieee80211_amrr_node_init(&IWN_VAP(vap)->iv_amrr,
956 &IWN_NODE(ni)->amn, ni);
960 iwn_media_change(struct ifnet *ifp)
962 int error = ieee80211_media_change(ifp);
963 /* NB: only the fixed rate can change and that doesn't need a reset */
964 return (error == ENETRESET ? 0 : error);
968 iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
970 struct iwn_vap *ivp = IWN_VAP(vap);
971 struct ieee80211com *ic = vap->iv_ic;
972 struct iwn_softc *sc = ic->ic_ifp->if_softc;
975 DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
976 ieee80211_state_name[vap->iv_state],
977 ieee80211_state_name[nstate]);
980 callout_stop(&sc->sc_timer_to);
984 * Some state transitions require issuing a configure request
985 * to the adapter. This must be done in a blocking context
986 * so we toss control to the task q thread where the state
987 * change will be finished after the command completes.
989 if (nstate == IEEE80211_S_AUTH && vap->iv_state != IEEE80211_S_AUTH) {
990 /* !AUTH -> AUTH requires adapter config */
991 error = iwn_queue_cmd(sc, IWN_AUTH, arg, IWN_QUEUE_NORMAL);
992 return (error != 0 ? error : EINPROGRESS);
994 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
996 * !RUN -> RUN requires setting the association id
997 * which is done with a firmware cmd. We also defer
998 * starting the timers until that work is done.
1000 error = iwn_queue_cmd(sc, IWN_RUN, arg, IWN_QUEUE_NORMAL);
1001 return (error != 0 ? error : EINPROGRESS);
1003 if (nstate == IEEE80211_S_RUN) {
1005 * RUN -> RUN transition; just restart the timers.
1007 iwn_calib_reset(sc);
1009 return ivp->iv_newstate(vap, nstate, arg);
1013 * Grab exclusive access to NIC memory.
1016 iwn_mem_lock(struct iwn_softc *sc)
1021 tmp = IWN_READ(sc, IWN_GPIO_CTL);
1022 IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_MAC);
1024 /* spin until we actually get the lock */
1025 for (ntries = 0; ntries < 1000; ntries++) {
1026 if ((IWN_READ(sc, IWN_GPIO_CTL) &
1027 (IWN_GPIO_CLOCK | IWN_GPIO_SLEEP)) == IWN_GPIO_CLOCK)
1032 device_printf(sc->sc_dev,
1033 "%s: could not lock memory\n", __func__);
1037 * Release lock on NIC memory.
1040 iwn_mem_unlock(struct iwn_softc *sc)
1042 uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
1043 IWN_WRITE(sc, IWN_GPIO_CTL, tmp & ~IWN_GPIO_MAC);
1047 iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
1049 IWN_WRITE(sc, IWN_READ_MEM_ADDR, IWN_MEM_4 | addr);
1050 return IWN_READ(sc, IWN_READ_MEM_DATA);
1054 iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
1056 IWN_WRITE(sc, IWN_WRITE_MEM_ADDR, IWN_MEM_4 | addr);
1057 IWN_WRITE(sc, IWN_WRITE_MEM_DATA, data);
1061 iwn_mem_write_region_4(struct iwn_softc *sc, uint32_t addr,
1062 const uint32_t *data, int wlen)
1064 for (; wlen > 0; wlen--, data++, addr += 4)
1065 iwn_mem_write(sc, addr, *data);
1069 iwn_eeprom_lock(struct iwn_softc *sc)
1074 tmp = IWN_READ(sc, IWN_HWCONFIG);
1075 IWN_WRITE(sc, IWN_HWCONFIG, tmp | IWN_HW_EEPROM_LOCKED);
1077 /* spin until we actually get the lock */
1078 for (ntries = 0; ntries < 100; ntries++) {
1079 if (IWN_READ(sc, IWN_HWCONFIG) & IWN_HW_EEPROM_LOCKED)
1087 iwn_eeprom_unlock(struct iwn_softc *sc)
1089 uint32_t tmp = IWN_READ(sc, IWN_HWCONFIG);
1090 IWN_WRITE(sc, IWN_HWCONFIG, tmp & ~IWN_HW_EEPROM_LOCKED);
1094 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC
1095 * instead of using the traditional bit-bang method.
1098 iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int len)
1100 uint8_t *out = data;
1105 for (; len > 0; len -= 2, addr++) {
1106 IWN_WRITE(sc, IWN_EEPROM_CTL, addr << 2);
1107 tmp = IWN_READ(sc, IWN_EEPROM_CTL);
1108 IWN_WRITE(sc, IWN_EEPROM_CTL, tmp & ~IWN_EEPROM_MSK );
1110 for (ntries = 0; ntries < 10; ntries++) {
1111 if ((val = IWN_READ(sc, IWN_EEPROM_CTL)) &
1117 device_printf(sc->sc_dev,"could not read EEPROM\n");
1130 * The firmware boot code is small and is intended to be copied directly into
1131 * the NIC internal memory.
1134 iwn_transfer_microcode(struct iwn_softc *sc, const uint8_t *ucode, int size)
1138 size /= sizeof (uint32_t);
1142 /* copy microcode image into NIC memory */
1143 iwn_mem_write_region_4(sc, IWN_MEM_UCODE_BASE,
1144 (const uint32_t *)ucode, size);
1146 iwn_mem_write(sc, IWN_MEM_UCODE_SRC, 0);
1147 iwn_mem_write(sc, IWN_MEM_UCODE_DST, IWN_FW_TEXT);
1148 iwn_mem_write(sc, IWN_MEM_UCODE_SIZE, size);
1151 iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_RUN);
1153 /* wait for transfer to complete */
1154 for (ntries = 0; ntries < 1000; ntries++) {
1155 if (!(iwn_mem_read(sc, IWN_MEM_UCODE_CTL) & IWN_UC_RUN))
1159 if (ntries == 1000) {
1161 device_printf(sc->sc_dev,
1162 "%s: could not load boot firmware\n", __func__);
1165 iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_ENABLE);
1173 iwn_load_firmware(struct iwn_softc *sc)
1177 KASSERT(sc->fw_fp == NULL, ("firmware already loaded"));
1180 /* load firmware image from disk */
1181 sc->fw_fp = firmware_get("iwnfw");
1182 if (sc->fw_fp == NULL) {
1183 device_printf(sc->sc_dev,
1184 "%s: could not load firmare image \"iwnfw\"\n", __func__);
1193 iwn_transfer_firmware(struct iwn_softc *sc)
1195 struct iwn_dma_info *dma = &sc->fw_dma;
1196 const struct iwn_firmware_hdr *hdr;
1197 const uint8_t *init_text, *init_data, *main_text, *main_data;
1198 const uint8_t *boot_text;
1199 uint32_t init_textsz, init_datasz, main_textsz, main_datasz;
1200 uint32_t boot_textsz;
1202 const struct firmware *fp = sc->fw_fp;
1204 /* extract firmware header information */
1205 if (fp->datasize < sizeof (struct iwn_firmware_hdr)) {
1206 device_printf(sc->sc_dev,
1207 "%s: truncated firmware header: %zu bytes, expecting %zu\n",
1208 __func__, fp->datasize, sizeof (struct iwn_firmware_hdr));
1212 hdr = (const struct iwn_firmware_hdr *)fp->data;
1213 main_textsz = le32toh(hdr->main_textsz);
1214 main_datasz = le32toh(hdr->main_datasz);
1215 init_textsz = le32toh(hdr->init_textsz);
1216 init_datasz = le32toh(hdr->init_datasz);
1217 boot_textsz = le32toh(hdr->boot_textsz);
1219 /* sanity-check firmware segments sizes */
1220 if (main_textsz > IWN_FW_MAIN_TEXT_MAXSZ ||
1221 main_datasz > IWN_FW_MAIN_DATA_MAXSZ ||
1222 init_textsz > IWN_FW_INIT_TEXT_MAXSZ ||
1223 init_datasz > IWN_FW_INIT_DATA_MAXSZ ||
1224 boot_textsz > IWN_FW_BOOT_TEXT_MAXSZ ||
1225 (boot_textsz & 3) != 0) {
1226 device_printf(sc->sc_dev,
1227 "%s: invalid firmware header, main [%d,%d], init [%d,%d] "
1228 "boot %d\n", __func__, main_textsz, main_datasz,
1229 init_textsz, init_datasz, boot_textsz);
1234 /* check that all firmware segments are present */
1235 if (fp->datasize < sizeof (struct iwn_firmware_hdr) + main_textsz +
1236 main_datasz + init_textsz + init_datasz + boot_textsz) {
1237 device_printf(sc->sc_dev, "%s: firmware file too short: "
1238 "%zu bytes, main [%d, %d], init [%d,%d] boot %d\n",
1239 __func__, fp->datasize, main_textsz, main_datasz,
1240 init_textsz, init_datasz, boot_textsz);
1245 /* get pointers to firmware segments */
1246 main_text = (const uint8_t *)(hdr + 1);
1247 main_data = main_text + main_textsz;
1248 init_text = main_data + main_datasz;
1249 init_data = init_text + init_textsz;
1250 boot_text = init_data + init_datasz;
1252 /* copy initialization images into pre-allocated DMA-safe memory */
1253 memcpy(dma->vaddr, init_data, init_datasz);
1254 memcpy(dma->vaddr + IWN_FW_INIT_DATA_MAXSZ, init_text, init_textsz);
1256 /* tell adapter where to find initialization images */
1258 iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
1259 iwn_mem_write(sc, IWN_MEM_DATA_SIZE, init_datasz);
1260 iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
1261 (dma->paddr + IWN_FW_INIT_DATA_MAXSZ) >> 4);
1262 iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, init_textsz);
1265 /* load firmware boot code */
1266 error = iwn_transfer_microcode(sc, boot_text, boot_textsz);
1268 device_printf(sc->sc_dev,
1269 "%s: could not load boot firmware, error %d\n",
1274 /* now press "execute" ;-) */
1275 IWN_WRITE(sc, IWN_RESET, 0);
1277 /* wait at most one second for first alive notification */
1278 error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
1280 /* this isn't what was supposed to happen.. */
1281 device_printf(sc->sc_dev,
1282 "%s: timeout waiting for first alive notice, error %d\n",
1287 /* copy runtime images into pre-allocated DMA-safe memory */
1288 memcpy(dma->vaddr, main_data, main_datasz);
1289 memcpy(dma->vaddr + IWN_FW_MAIN_DATA_MAXSZ, main_text, main_textsz);
1291 /* tell adapter where to find runtime images */
1293 iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
1294 iwn_mem_write(sc, IWN_MEM_DATA_SIZE, main_datasz);
1295 iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
1296 (dma->paddr + IWN_FW_MAIN_DATA_MAXSZ) >> 4);
1297 iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, IWN_FW_UPDATED | main_textsz);
1300 /* wait at most one second for second alive notification */
1301 error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
1303 /* this isn't what was supposed to happen.. */
1304 device_printf(sc->sc_dev,
1305 "%s: timeout waiting for second alive notice, error %d\n",
1315 iwn_unload_firmware(struct iwn_softc *sc)
1317 if (sc->fw_fp != NULL) {
1318 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
1324 iwn_timer_timeout(void *arg)
1326 struct iwn_softc *sc = arg;
1328 IWN_LOCK_ASSERT(sc);
1330 if (sc->calib_cnt && --sc->calib_cnt == 0) {
1331 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
1332 "send statistics request");
1333 (void) iwn_cmd(sc, IWN_CMD_GET_STATISTICS, NULL, 0, 1);
1334 sc->calib_cnt = 60; /* do calibration every 60s */
1336 iwn_watchdog(sc); /* NB: piggyback tx watchdog */
1337 callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
1341 iwn_calib_reset(struct iwn_softc *sc)
1343 callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
1344 sc->calib_cnt = 60; /* do calibration every 60s */
1348 iwn_ampdu_rx_start(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1350 struct iwn_rx_stat *stat;
1352 DPRINTF(sc, IWN_DEBUG_RECV, "%s\n", "received AMPDU stats");
1353 /* save Rx statistics, they will be used on IWN_AMPDU_RX_DONE */
1354 stat = (struct iwn_rx_stat *)(desc + 1);
1355 memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
1356 sc->last_rx_valid = 1;
1360 maprate(int iwnrate)
1367 case 110: return 22;
1369 case 0xd: return 12;
1370 case 0xf: return 18;
1371 case 0x5: return 24;
1372 case 0x7: return 36;
1373 case 0x9: return 48;
1374 case 0xb: return 72;
1375 case 0x1: return 96;
1376 case 0x3: return 108;
1379 /* unknown rate: should not happen */
1384 iwn_rx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc,
1385 struct iwn_rx_data *data)
1387 struct ifnet *ifp = sc->sc_ifp;
1388 struct ieee80211com *ic = ifp->if_l2com;
1389 struct iwn_rx_ring *ring = &sc->rxq;
1390 struct ieee80211_frame *wh;
1391 struct ieee80211_node *ni;
1392 struct mbuf *m, *mnew;
1393 struct iwn_rx_stat *stat;
1400 if (desc->type == IWN_AMPDU_RX_DONE) {
1401 /* check for prior AMPDU_RX_START */
1402 if (!sc->last_rx_valid) {
1403 DPRINTF(sc, IWN_DEBUG_ANY,
1404 "%s: missing AMPDU_RX_START\n", __func__);
1408 sc->last_rx_valid = 0;
1409 stat = &sc->last_rx_stat;
1411 stat = (struct iwn_rx_stat *)(desc + 1);
1413 if (stat->cfg_phy_len > IWN_STAT_MAXLEN) {
1414 device_printf(sc->sc_dev,
1415 "%s: invalid rx statistic header, len %d\n",
1416 __func__, stat->cfg_phy_len);
1420 if (desc->type == IWN_AMPDU_RX_DONE) {
1421 struct iwn_rx_ampdu *ampdu = (struct iwn_rx_ampdu *)(desc + 1);
1422 head = (caddr_t)(ampdu + 1);
1423 len = le16toh(ampdu->len);
1425 head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
1426 len = le16toh(stat->len);
1429 /* discard Rx frames with bad CRC early */
1430 tail = (uint32_t *)(head + len);
1431 if ((le32toh(*tail) & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
1432 DPRINTF(sc, IWN_DEBUG_RECV, "%s: rx flags error %x\n",
1433 __func__, le32toh(*tail));
1437 if (len < sizeof (struct ieee80211_frame)) {
1438 DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
1440 ic->ic_stats.is_rx_tooshort++;
1445 /* XXX don't need mbuf, just dma buffer */
1446 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1448 DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
1450 ic->ic_stats.is_rx_nobuf++;
1454 error = bus_dmamap_load(ring->data_dmat, data->map,
1455 mtod(mnew, caddr_t), MJUMPAGESIZE,
1456 iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1457 if (error != 0 && error != EFBIG) {
1458 device_printf(sc->sc_dev,
1459 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1461 ic->ic_stats.is_rx_nobuf++; /* XXX need stat */
1465 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1467 /* finalize mbuf and swap in new one */
1469 m->m_pkthdr.rcvif = ifp;
1471 m->m_pkthdr.len = m->m_len = len;
1474 /* update Rx descriptor */
1475 ring->desc[ring->cur] = htole32(paddr >> 8);
1477 rssi = iwn_get_rssi(sc, stat);
1479 /* grab a reference to the source node */
1480 wh = mtod(m, struct ieee80211_frame *);
1481 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
1483 nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
1484 (ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
1486 if (bpf_peers_present(ifp->if_bpf)) {
1487 struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
1490 tap->wr_dbm_antsignal = rssi;
1491 tap->wr_dbm_antnoise = nf;
1492 tap->wr_rate = maprate(stat->rate);
1493 tap->wr_tsft = htole64(stat->tstamp);
1495 if (stat->flags & htole16(IWN_CONFIG_SHPREAMBLE))
1496 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
1498 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m);
1503 /* send the frame to the 802.11 layer */
1505 (void) ieee80211_input(ni, m, rssi - nf, nf, 0);
1506 ieee80211_free_node(ni);
1508 (void) ieee80211_input_all(ic, m, rssi - nf, nf, 0);
1514 iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1516 struct ifnet *ifp = sc->sc_ifp;
1517 struct ieee80211com *ic = ifp->if_l2com;
1518 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1519 struct iwn_calib_state *calib = &sc->calib;
1520 struct iwn_stats *stats = (struct iwn_stats *)(desc + 1);
1522 /* beacon stats are meaningful only when associated and not scanning */
1523 if (vap->iv_state != IEEE80211_S_RUN ||
1524 (ic->ic_flags & IEEE80211_F_SCAN))
1527 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: cmd %d\n", __func__, desc->type);
1528 iwn_calib_reset(sc);
1530 /* test if temperature has changed */
1531 if (stats->general.temp != sc->rawtemp) {
1534 sc->rawtemp = stats->general.temp;
1535 temp = iwn_get_temperature(sc);
1536 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
1539 /* update Tx power if need be */
1540 iwn_power_calibration(sc, temp);
1543 if (desc->type != IWN_BEACON_STATISTICS)
1544 return; /* reply to a statistics request */
1546 sc->noise = iwn_get_noise(&stats->rx.general);
1547 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise);
1549 /* test that RSSI and noise are present in stats report */
1550 if (stats->rx.general.flags != htole32(1)) {
1551 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
1552 "received statistics without RSSI");
1556 if (calib->state == IWN_CALIB_STATE_ASSOC)
1557 iwn_compute_differential_gain(sc, &stats->rx.general);
1558 else if (calib->state == IWN_CALIB_STATE_RUN)
1559 iwn_tune_sensitivity(sc, &stats->rx);
1563 iwn_tx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1565 struct ifnet *ifp = sc->sc_ifp;
1566 struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf];
1567 struct iwn_tx_data *data = &ring->data[desc->idx];
1568 struct iwn_tx_stat *stat = (struct iwn_tx_stat *)(desc + 1);
1569 struct iwn_node *wn = IWN_NODE(data->ni);
1571 struct ieee80211_node *ni;
1574 KASSERT(data->ni != NULL, ("no node"));
1576 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
1577 "qid %d idx %d retries %d nkill %d rate %x duration %d status %x\n",
1578 __func__, desc->qid, desc->idx, stat->ntries,
1579 stat->nkill, stat->rate, le16toh(stat->duration),
1580 le32toh(stat->status));
1583 * Update rate control statistics for the node.
1585 status = le32toh(stat->status) & 0xff;
1586 if (status & 0x80) {
1587 DPRINTF(sc, IWN_DEBUG_ANY, "%s: status 0x%x\n",
1588 __func__, le32toh(stat->status));
1590 ieee80211_amrr_tx_complete(&wn->amn,
1591 IEEE80211_AMRR_FAILURE, stat->ntries);
1593 ieee80211_amrr_tx_complete(&wn->amn,
1594 IEEE80211_AMRR_SUCCESS, stat->ntries);
1597 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1598 bus_dmamap_unload(ring->data_dmat, data->map);
1600 m = data->m, data->m = NULL;
1601 ni = data->ni, data->ni = NULL;
1603 if (m->m_flags & M_TXCB) {
1605 * Channels marked for "radar" require traffic to be received
1606 * to unlock before we can transmit. Until traffic is seen
1607 * any attempt to transmit is returned immediately with status
1608 * set to IWN_TX_FAIL_TX_LOCKED. Unfortunately this can easily
1609 * happen on first authenticate after scanning. To workaround
1610 * this we ignore a failure of this sort in AUTH state so the
1611 * 802.11 layer will fall back to using a timeout to wait for
1612 * the AUTH reply. This allows the firmware time to see
1613 * traffic so a subsequent retry of AUTH succeeds. It's
1614 * unclear why the firmware does not maintain state for
1615 * channels recently visited as this would allow immediate
1616 * use of the channel after a scan (where we see traffic).
1618 if (status == IWN_TX_FAIL_TX_LOCKED &&
1619 ni->ni_vap->iv_state == IEEE80211_S_AUTH)
1620 ieee80211_process_callback(ni, m, 0);
1622 ieee80211_process_callback(ni, m,
1623 (status & IWN_TX_FAIL) != 0);
1626 ieee80211_free_node(ni);
1630 sc->sc_tx_timer = 0;
1631 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1632 iwn_start_locked(ifp);
1636 iwn_cmd_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1638 struct iwn_tx_ring *ring = &sc->txq[4];
1639 struct iwn_tx_data *data;
1641 if ((desc->qid & 0xf) != 4)
1642 return; /* not a command ack */
1644 data = &ring->data[desc->idx];
1646 /* if the command was mapped in a mbuf, free it */
1647 if (data->m != NULL) {
1648 bus_dmamap_unload(ring->data_dmat, data->map);
1653 wakeup(&ring->cmd[desc->idx]);
1657 iwn_bmiss(void *arg, int npending)
1659 struct iwn_softc *sc = arg;
1660 struct ieee80211com *ic = sc->sc_ifp->if_l2com;
1662 ieee80211_beacon_miss(ic);
1666 iwn_notif_intr(struct iwn_softc *sc)
1668 struct ifnet *ifp = sc->sc_ifp;
1669 struct ieee80211com *ic = ifp->if_l2com;
1670 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1673 hw = le16toh(sc->shared->closed_count) & 0xfff;
1674 while (sc->rxq.cur != hw) {
1675 struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
1676 struct iwn_rx_desc *desc = (void *)data->m->m_ext.ext_buf;
1678 DPRINTF(sc, IWN_DEBUG_RECV,
1679 "%s: qid %x idx %d flags %x type %d(%s) len %d\n",
1680 __func__, desc->qid, desc->idx, desc->flags,
1681 desc->type, iwn_intr_str(desc->type),
1682 le16toh(desc->len));
1684 if (!(desc->qid & 0x80)) /* reply to a command */
1685 iwn_cmd_intr(sc, desc);
1687 switch (desc->type) {
1689 case IWN_AMPDU_RX_DONE:
1690 iwn_rx_intr(sc, desc, data);
1693 case IWN_AMPDU_RX_START:
1694 iwn_ampdu_rx_start(sc, desc);
1698 /* a 802.11 frame has been transmitted */
1699 iwn_tx_intr(sc, desc);
1702 case IWN_RX_STATISTICS:
1703 case IWN_BEACON_STATISTICS:
1704 iwn_rx_statistics(sc, desc);
1707 case IWN_BEACON_MISSED: {
1708 struct iwn_beacon_missed *miss =
1709 (struct iwn_beacon_missed *)(desc + 1);
1710 int misses = le32toh(miss->consecutive);
1712 /* XXX not sure why we're notified w/ zero */
1715 DPRINTF(sc, IWN_DEBUG_STATE,
1716 "%s: beacons missed %d/%d\n", __func__,
1717 misses, le32toh(miss->total));
1719 * If more than 5 consecutive beacons are missed,
1720 * reinitialize the sensitivity state machine.
1722 if (vap->iv_state == IEEE80211_S_RUN && misses > 5)
1723 (void) iwn_init_sensitivity(sc);
1724 if (misses >= vap->iv_bmissthreshold)
1725 taskqueue_enqueue(taskqueue_swi,
1726 &sc->sc_bmiss_task);
1729 case IWN_UC_READY: {
1730 struct iwn_ucode_info *uc =
1731 (struct iwn_ucode_info *)(desc + 1);
1733 /* the microcontroller is ready */
1734 DPRINTF(sc, IWN_DEBUG_RESET,
1735 "microcode alive notification version=%d.%d "
1736 "subtype=%x alive=%x\n", uc->major, uc->minor,
1737 uc->subtype, le32toh(uc->valid));
1739 if (le32toh(uc->valid) != 1) {
1740 device_printf(sc->sc_dev,
1741 "microcontroller initialization failed");
1744 if (uc->subtype == IWN_UCODE_INIT) {
1745 /* save microcontroller's report */
1746 memcpy(&sc->ucode_info, uc, sizeof (*uc));
1750 case IWN_STATE_CHANGED: {
1751 uint32_t *status = (uint32_t *)(desc + 1);
1754 * State change allows hardware switch change to be
1755 * noted. However, we handle this in iwn_intr as we
1756 * get both the enable/disble intr.
1758 DPRINTF(sc, IWN_DEBUG_INTR, "state changed to %x\n",
1762 case IWN_START_SCAN: {
1763 struct iwn_start_scan *scan =
1764 (struct iwn_start_scan *)(desc + 1);
1766 DPRINTF(sc, IWN_DEBUG_ANY,
1767 "%s: scanning channel %d status %x\n",
1768 __func__, scan->chan, le32toh(scan->status));
1771 case IWN_STOP_SCAN: {
1772 struct iwn_stop_scan *scan =
1773 (struct iwn_stop_scan *)(desc + 1);
1775 DPRINTF(sc, IWN_DEBUG_STATE,
1776 "scan finished nchan=%d status=%d chan=%d\n",
1777 scan->nchan, scan->status, scan->chan);
1779 iwn_queue_cmd(sc, IWN_SCAN_NEXT, 0, IWN_QUEUE_NORMAL);
1783 sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT;
1786 /* tell the firmware what we have processed */
1787 hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1;
1788 IWN_WRITE(sc, IWN_RX_WIDX, hw & ~7);
1794 struct iwn_softc *sc = arg;
1799 /* disable interrupts */
1800 IWN_WRITE(sc, IWN_MASK, 0);
1802 r1 = IWN_READ(sc, IWN_INTR);
1803 r2 = IWN_READ(sc, IWN_INTR_STATUS);
1805 if (r1 == 0 && r2 == 0) {
1806 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
1807 goto done; /* not for us */
1810 if (r1 == 0xffffffff)
1811 goto done; /* hardware gone */
1813 /* ack interrupts */
1814 IWN_WRITE(sc, IWN_INTR, r1);
1815 IWN_WRITE(sc, IWN_INTR_STATUS, r2);
1817 DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=%x reg2=%x\n", r1, r2);
1819 if (r1 & IWN_RF_TOGGLED) {
1820 uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
1821 device_printf(sc->sc_dev, "RF switch: radio %s\n",
1822 (tmp & IWN_GPIO_RF_ENABLED) ? "enabled" : "disabled");
1823 if (tmp & IWN_GPIO_RF_ENABLED)
1824 iwn_queue_cmd(sc, IWN_RADIO_ENABLE, 0, IWN_QUEUE_CLEAR);
1826 iwn_queue_cmd(sc, IWN_RADIO_DISABLE, 0, IWN_QUEUE_CLEAR);
1828 if (r1 & IWN_CT_REACHED)
1829 device_printf(sc->sc_dev, "critical temperature reached!\n");
1830 if (r1 & (IWN_SW_ERROR | IWN_HW_ERROR)) {
1831 device_printf(sc->sc_dev, "error, INTR=%b STATUS=0x%x\n",
1832 r1, IWN_INTR_BITS, r2);
1833 iwn_queue_cmd(sc, IWN_REINIT, 0, IWN_QUEUE_CLEAR);
1836 if ((r1 & (IWN_RX_INTR | IWN_SW_RX_INTR)) || (r2 & IWN_RX_STATUS_INTR))
1838 if (r1 & IWN_ALIVE_INTR)
1841 /* re-enable interrupts */
1842 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
1848 iwn_plcp_signal(int rate)
1851 /* CCK rates (returned values are device-dependent) */
1855 case 22: return 110;
1857 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1858 /* R1-R4, (u)ral is R4-R1 */
1859 case 12: return 0xd;
1860 case 18: return 0xf;
1861 case 24: return 0x5;
1862 case 36: return 0x7;
1863 case 48: return 0x9;
1864 case 72: return 0xb;
1865 case 96: return 0x1;
1866 case 108: return 0x3;
1867 case 120: return 0x3;
1869 /* unknown rate (should not get there) */
1873 /* determine if a given rate is CCK or OFDM */
1874 #define IWN_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1877 iwn_tx_data(struct iwn_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1878 struct iwn_tx_ring *ring)
1880 struct ieee80211vap *vap = ni->ni_vap;
1881 struct ieee80211com *ic = ni->ni_ic;
1882 struct ifnet *ifp = sc->sc_ifp;
1883 const struct ieee80211_txparam *tp;
1884 struct iwn_tx_desc *desc;
1885 struct iwn_tx_data *data;
1886 struct iwn_tx_cmd *cmd;
1887 struct iwn_cmd_data *tx;
1888 struct ieee80211_frame *wh;
1889 struct ieee80211_key *k;
1896 int rate, error, pad, nsegs, i, ismcast, id;
1897 bus_dma_segment_t segs[IWN_MAX_SCATTER];
1899 IWN_LOCK_ASSERT(sc);
1901 wh = mtod(m0, struct ieee80211_frame *);
1902 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1903 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1904 hdrlen = ieee80211_anyhdrsize(wh);
1906 /* pick a tx rate */
1908 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1909 if (type == IEEE80211_FC0_TYPE_MGT)
1910 rate = tp->mgmtrate;
1912 rate = tp->mcastrate;
1913 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1914 rate = tp->ucastrate;
1916 (void) ieee80211_amrr_choose(ni, &IWN_NODE(ni)->amn);
1917 rate = ni->ni_txrate;
1920 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1921 k = ieee80211_crypto_encap(ni, m0);
1926 /* packet header may have moved, reset our local pointer */
1927 wh = mtod(m0, struct ieee80211_frame *);
1931 if (bpf_peers_present(ifp->if_bpf)) {
1932 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
1935 tap->wt_rate = rate;
1937 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
1939 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
1942 flags = IWN_TX_AUTO_SEQ;
1945 flags |= IWN_TX_NEED_ACK;
1947 if (ismcast || type != IEEE80211_FC0_TYPE_DATA)
1948 id = IWN_ID_BROADCAST;
1952 /* check if RTS/CTS or CTS-to-self protection must be used */
1954 /* multicast frames are not sent at OFDM rates in 802.11b/g */
1955 if (m0->m_pkthdr.len+IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
1956 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
1957 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1958 IWN_RATE_IS_OFDM(rate)) {
1959 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
1960 flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
1961 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
1962 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
1966 if (type == IEEE80211_FC0_TYPE_MGT) {
1967 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1969 /* tell h/w to set timestamp in probe responses */
1970 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1971 flags |= IWN_TX_INSERT_TSTAMP;
1973 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
1974 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
1975 timeout = htole16(3);
1977 timeout = htole16(2);
1979 timeout = htole16(0);
1982 /* first segment's length must be a multiple of 4 */
1983 flags |= IWN_TX_NEED_PADDING;
1984 pad = 4 - (hdrlen & 3);
1988 desc = &ring->desc[ring->cur];
1989 data = &ring->data[ring->cur];
1991 cmd = &ring->cmd[ring->cur];
1992 cmd->code = IWN_CMD_TX_DATA;
1994 cmd->qid = ring->qid;
1995 cmd->idx = ring->cur;
1997 tx = (struct iwn_cmd_data *)cmd->data;
1998 /* NB: no need to bzero tx, all fields are reinitialized here */
2000 tx->flags = htole32(flags);
2001 tx->len = htole16(m0->m_pkthdr.len);
2002 tx->rate = iwn_plcp_signal(rate);
2003 tx->rts_ntries = 60; /* XXX? */
2004 tx->data_ntries = 15; /* XXX? */
2005 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
2006 tx->timeout = timeout;
2013 /* XXX alternate between Ant A and Ant B ? */
2014 tx->rflags = IWN_RFLAG_ANT_B;
2015 if (tx->id == IWN_ID_BROADCAST) {
2016 tx->ridx = IWN_MAX_TX_RETRIES - 1;
2017 if (!IWN_RATE_IS_OFDM(rate))
2018 tx->rflags |= IWN_RFLAG_CCK;
2021 /* tell adapter to ignore rflags */
2022 tx->flags |= htole32(IWN_TX_USE_NODE_RATE);
2025 /* copy and trim IEEE802.11 header */
2026 memcpy((uint8_t *)(tx + 1), wh, hdrlen);
2029 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2030 &nsegs, BUS_DMA_NOWAIT);
2032 if (error == EFBIG) {
2033 /* too many fragments, linearize */
2034 mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
2037 device_printf(sc->sc_dev,
2038 "%s: could not defrag mbuf\n", __func__);
2043 error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
2044 data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
2048 device_printf(sc->sc_dev,
2049 "%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
2059 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
2060 __func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
2062 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2063 tx->loaddr = htole32(paddr + 4 +
2064 offsetof(struct iwn_cmd_data, ntries));
2065 tx->hiaddr = 0; /* limit to 32-bit physical addresses */
2067 /* first scatter/gather segment is used by the tx data command */
2068 IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
2069 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
2070 for (i = 1; i <= nsegs; i++) {
2071 IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
2072 segs[i - 1].ds_len);
2074 sc->shared->len[ring->qid][ring->cur] =
2075 htole16(hdrlen + m0->m_pkthdr.len + 8);
2077 if (ring->cur < IWN_TX_WINDOW)
2078 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2079 htole16(hdrlen + m0->m_pkthdr.len + 8);
2084 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2085 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2088 sc->sc_tx_timer = 5;
2094 iwn_start(struct ifnet *ifp)
2096 struct iwn_softc *sc = ifp->if_softc;
2099 iwn_start_locked(ifp);
2104 iwn_start_locked(struct ifnet *ifp)
2106 struct iwn_softc *sc = ifp->if_softc;
2107 struct ieee80211_node *ni;
2108 struct iwn_tx_ring *txq;
2112 IWN_LOCK_ASSERT(sc);
2115 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
2118 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2119 pri = M_WME_GETAC(m);
2120 txq = &sc->txq[pri];
2121 m = ieee80211_encap(ni, m);
2124 ieee80211_free_node(ni);
2127 if (txq->queued >= IWN_TX_RING_COUNT - 8) {
2129 /* ring is nearly full, stop flow */
2130 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2132 if (iwn_tx_data(sc, m, ni, txq) != 0) {
2134 ieee80211_free_node(ni);
2142 iwn_tx_handoff(struct iwn_softc *sc,
2143 struct iwn_tx_ring *ring,
2144 struct iwn_tx_cmd *cmd,
2145 struct iwn_cmd_data *tx,
2146 struct ieee80211_node *ni,
2147 struct mbuf *m0, u_int hdrlen, int pad)
2149 struct ifnet *ifp = sc->sc_ifp;
2150 struct iwn_tx_desc *desc;
2151 struct iwn_tx_data *data;
2154 int error, nsegs, i;
2155 bus_dma_segment_t segs[IWN_MAX_SCATTER];
2157 /* copy and trim IEEE802.11 header */
2158 memcpy((uint8_t *)(tx + 1), mtod(m0, uint8_t *), hdrlen);
2161 desc = &ring->desc[ring->cur];
2162 data = &ring->data[ring->cur];
2164 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2165 &nsegs, BUS_DMA_NOWAIT);
2167 if (error == EFBIG) {
2168 /* too many fragments, linearize */
2169 mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
2172 device_printf(sc->sc_dev,
2173 "%s: could not defrag mbuf\n", __func__);
2178 error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
2179 data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
2183 device_printf(sc->sc_dev,
2184 "%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
2194 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
2195 __func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
2197 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2198 tx->loaddr = htole32(paddr + 4 +
2199 offsetof(struct iwn_cmd_data, ntries));
2200 tx->hiaddr = 0; /* limit to 32-bit physical addresses */
2202 /* first scatter/gather segment is used by the tx data command */
2203 IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
2204 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
2205 for (i = 1; i <= nsegs; i++) {
2206 IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
2207 segs[i - 1].ds_len);
2209 sc->shared->len[ring->qid][ring->cur] =
2210 htole16(hdrlen + m0->m_pkthdr.len + 8);
2212 if (ring->cur < IWN_TX_WINDOW)
2213 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2214 htole16(hdrlen + m0->m_pkthdr.len + 8);
2219 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2220 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2223 sc->sc_tx_timer = 5;
2229 iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m0,
2230 struct ieee80211_node *ni, struct iwn_tx_ring *ring,
2231 const struct ieee80211_bpf_params *params)
2233 struct ifnet *ifp = sc->sc_ifp;
2234 struct iwn_tx_cmd *cmd;
2235 struct iwn_cmd_data *tx;
2236 struct ieee80211_frame *wh;
2238 uint8_t type, subtype;
2242 IWN_LOCK_ASSERT(sc);
2244 wh = mtod(m0, struct ieee80211_frame *);
2245 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2246 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
2247 hdrlen = ieee80211_anyhdrsize(wh);
2249 flags = IWN_TX_AUTO_SEQ;
2250 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
2251 flags |= IWN_TX_NEED_ACK;
2252 if (params->ibp_flags & IEEE80211_BPF_RTS)
2253 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
2254 if (params->ibp_flags & IEEE80211_BPF_CTS)
2255 flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
2256 if (type == IEEE80211_FC0_TYPE_MGT &&
2257 subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) {
2258 /* tell h/w to set timestamp in probe responses */
2259 flags |= IWN_TX_INSERT_TSTAMP;
2262 /* first segment's length must be a multiple of 4 */
2263 flags |= IWN_TX_NEED_PADDING;
2264 pad = 4 - (hdrlen & 3);
2268 /* pick a tx rate */
2269 rate = params->ibp_rate0;
2271 if (bpf_peers_present(ifp->if_bpf)) {
2272 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
2275 tap->wt_rate = rate;
2277 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
2280 cmd = &ring->cmd[ring->cur];
2281 cmd->code = IWN_CMD_TX_DATA;
2283 cmd->qid = ring->qid;
2284 cmd->idx = ring->cur;
2286 tx = (struct iwn_cmd_data *)cmd->data;
2287 /* NB: no need to bzero tx, all fields are reinitialized here */
2288 tx->id = IWN_ID_BROADCAST;
2289 tx->flags = htole32(flags);
2290 tx->len = htole16(m0->m_pkthdr.len);
2291 tx->rate = iwn_plcp_signal(rate);
2292 tx->rts_ntries = params->ibp_try1; /* XXX? */
2293 tx->data_ntries = params->ibp_try0;
2294 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
2295 /* XXX use try count? */
2296 if (type == IEEE80211_FC0_TYPE_MGT) {
2297 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
2298 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
2299 tx->timeout = htole16(3);
2301 tx->timeout = htole16(2);
2303 tx->timeout = htole16(0);
2305 /* XXX alternate between Ant A and Ant B ? */
2306 tx->rflags = IWN_RFLAG_ANT_B; /* XXX params->ibp_pri >> 2 */
2307 tx->ridx = IWN_MAX_TX_RETRIES - 1;
2308 if (!IWN_RATE_IS_OFDM(rate))
2309 tx->rflags |= IWN_RFLAG_CCK;
2311 return iwn_tx_handoff(sc, ring, cmd, tx, ni, m0, hdrlen, pad);
2315 iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2316 const struct ieee80211_bpf_params *params)
2318 struct ieee80211com *ic = ni->ni_ic;
2319 struct ifnet *ifp = ic->ic_ifp;
2320 struct iwn_softc *sc = ifp->if_softc;
2321 struct iwn_tx_ring *txq;
2324 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
2325 ieee80211_free_node(ni);
2332 txq = &sc->txq[M_WME_GETAC(m)];
2334 txq = &sc->txq[params->ibp_pri & 3];
2335 if (txq->queued >= IWN_TX_RING_COUNT - 8) {
2337 /* ring is nearly full, stop flow */
2338 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2340 if (params == NULL) {
2342 * Legacy path; interpret frame contents to decide
2343 * precisely how to send the frame.
2345 error = iwn_tx_data(sc, m, ni, txq);
2348 * Caller supplied explicit parameters to use in
2349 * sending the frame.
2351 error = iwn_tx_data_raw(sc, m, ni, txq, params);
2354 /* NB: m is reclaimed on tx failure */
2355 ieee80211_free_node(ni);
2363 iwn_watchdog(struct iwn_softc *sc)
2365 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) {
2366 struct ifnet *ifp = sc->sc_ifp;
2368 if_printf(ifp, "device timeout\n");
2369 iwn_queue_cmd(sc, IWN_REINIT, 0, IWN_QUEUE_CLEAR);
2374 iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2376 struct iwn_softc *sc = ifp->if_softc;
2377 struct ieee80211com *ic = ifp->if_l2com;
2378 struct ifreq *ifr = (struct ifreq *) data;
2379 int error = 0, startall = 0;
2384 if (ifp->if_flags & IFF_UP) {
2385 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2386 iwn_init_locked(sc);
2390 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2391 iwn_stop_locked(sc);
2395 ieee80211_start_all(ic);
2398 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2401 error = ether_ioctl(ifp, cmd, data);
2411 iwn_read_eeprom(struct iwn_softc *sc)
2413 struct ifnet *ifp = sc->sc_ifp;
2414 struct ieee80211com *ic = ifp->if_l2com;
2419 if ((error = iwn_eeprom_lock(sc)) != 0) {
2420 device_printf(sc->sc_dev,
2421 "%s: could not lock EEPROM, error %d\n", __func__, error);
2424 /* read and print regulatory domain */
2425 iwn_read_prom_data(sc, IWN_EEPROM_DOMAIN, domain, 4);
2426 device_printf(sc->sc_dev,"Reg Domain: %.4s", domain);
2428 /* read and print MAC address */
2429 iwn_read_prom_data(sc, IWN_EEPROM_MAC, ic->ic_myaddr, 6);
2430 printf(", address %s\n", ether_sprintf(ic->ic_myaddr));
2432 /* read the list of authorized channels */
2433 iwn_read_eeprom_channels(sc);
2435 /* read maximum allowed Tx power for 2GHz and 5GHz bands */
2436 iwn_read_prom_data(sc, IWN_EEPROM_MAXPOW, &val, 2);
2437 sc->maxpwr2GHz = val & 0xff;
2438 sc->maxpwr5GHz = val >> 8;
2439 /* check that EEPROM values are correct */
2440 if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50)
2441 sc->maxpwr5GHz = 38;
2442 if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50)
2443 sc->maxpwr2GHz = 38;
2444 DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n",
2445 sc->maxpwr2GHz, sc->maxpwr5GHz);
2447 /* read voltage at which samples were taken */
2448 iwn_read_prom_data(sc, IWN_EEPROM_VOLTAGE, &val, 2);
2449 sc->eeprom_voltage = (int16_t)le16toh(val);
2450 DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n",
2451 sc->eeprom_voltage);
2453 /* read power groups */
2454 iwn_read_prom_data(sc, IWN_EEPROM_BANDS, sc->bands, sizeof sc->bands);
2456 if (sc->sc_debug & IWN_DEBUG_ANY) {
2457 for (i = 0; i < IWN_NBANDS; i++)
2458 iwn_print_power_group(sc, i);
2461 iwn_eeprom_unlock(sc);
2464 struct iwn_chan_band {
2465 uint32_t addr; /* offset in EEPROM */
2466 uint32_t flags; /* net80211 flags */
2468 #define IWN_MAX_CHAN_PER_BAND 14
2469 uint8_t chan[IWN_MAX_CHAN_PER_BAND];
2473 iwn_read_eeprom_band(struct iwn_softc *sc, const struct iwn_chan_band *band)
2475 struct ifnet *ifp = sc->sc_ifp;
2476 struct ieee80211com *ic = ifp->if_l2com;
2477 struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
2478 struct ieee80211_channel *c;
2481 iwn_read_prom_data(sc, band->addr, channels,
2482 band->nchan * sizeof (struct iwn_eeprom_chan));
2484 for (i = 0; i < band->nchan; i++) {
2485 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
2486 DPRINTF(sc, IWN_DEBUG_RESET,
2487 "skip chan %d flags 0x%x maxpwr %d\n",
2488 band->chan[i], channels[i].flags,
2489 channels[i].maxpwr);
2492 chan = band->chan[i];
2494 /* translate EEPROM flags to net80211 */
2496 if ((channels[i].flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
2497 flags |= IEEE80211_CHAN_PASSIVE;
2498 if ((channels[i].flags & IWN_EEPROM_CHAN_IBSS) == 0)
2499 flags |= IEEE80211_CHAN_NOADHOC;
2500 if (channels[i].flags & IWN_EEPROM_CHAN_RADAR) {
2501 flags |= IEEE80211_CHAN_DFS;
2502 /* XXX apparently IBSS may still be marked */
2503 flags |= IEEE80211_CHAN_NOADHOC;
2506 DPRINTF(sc, IWN_DEBUG_RESET,
2507 "add chan %d flags 0x%x maxpwr %d\n",
2508 chan, channels[i].flags, channels[i].maxpwr);
2510 c = &ic->ic_channels[ic->ic_nchans++];
2512 c->ic_freq = ieee80211_ieee2mhz(chan, band->flags);
2513 c->ic_maxregpower = channels[i].maxpwr;
2514 c->ic_maxpower = 2*c->ic_maxregpower;
2515 if (band->flags & IEEE80211_CHAN_2GHZ) {
2516 /* G =>'s B is supported */
2517 c->ic_flags = IEEE80211_CHAN_B | flags;
2519 c = &ic->ic_channels[ic->ic_nchans++];
2521 c->ic_flags = IEEE80211_CHAN_G | flags;
2522 } else { /* 5GHz band */
2523 c->ic_flags = IEEE80211_CHAN_A | flags;
2525 /* XXX no constraints on using HT20 */
2526 /* add HT20, HT40 added separately */
2527 c = &ic->ic_channels[ic->ic_nchans++];
2529 c->ic_flags |= IEEE80211_CHAN_HT20;
2530 /* XXX NARROW =>'s 1/2 and 1/4 width? */
2535 iwn_read_eeprom_ht40(struct iwn_softc *sc, const struct iwn_chan_band *band)
2537 struct ifnet *ifp = sc->sc_ifp;
2538 struct ieee80211com *ic = ifp->if_l2com;
2539 struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
2540 struct ieee80211_channel *c, *cent, *extc;
2543 iwn_read_prom_data(sc, band->addr, channels,
2544 band->nchan * sizeof (struct iwn_eeprom_chan));
2546 for (i = 0; i < band->nchan; i++) {
2547 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID) ||
2548 !(channels[i].flags & IWN_EEPROM_CHAN_WIDE)) {
2549 DPRINTF(sc, IWN_DEBUG_RESET,
2550 "skip chan %d flags 0x%x maxpwr %d\n",
2551 band->chan[i], channels[i].flags,
2552 channels[i].maxpwr);
2556 * Each entry defines an HT40 channel pair; find the
2557 * center channel, then the extension channel above.
2559 cent = ieee80211_find_channel_byieee(ic, band->chan[i],
2560 band->flags & ~IEEE80211_CHAN_HT);
2561 if (cent == NULL) { /* XXX shouldn't happen */
2562 device_printf(sc->sc_dev,
2563 "%s: no entry for channel %d\n",
2564 __func__, band->chan[i]);
2567 extc = ieee80211_find_channel(ic, cent->ic_freq+20,
2568 band->flags & ~IEEE80211_CHAN_HT);
2570 DPRINTF(sc, IWN_DEBUG_RESET,
2571 "skip chan %d, extension channel not found\n",
2576 DPRINTF(sc, IWN_DEBUG_RESET,
2577 "add ht40 chan %d flags 0x%x maxpwr %d\n",
2578 band->chan[i], channels[i].flags, channels[i].maxpwr);
2580 c = &ic->ic_channels[ic->ic_nchans++];
2582 c->ic_extieee = extc->ic_ieee;
2583 c->ic_flags &= ~IEEE80211_CHAN_HT;
2584 c->ic_flags |= IEEE80211_CHAN_HT40U;
2585 c = &ic->ic_channels[ic->ic_nchans++];
2587 c->ic_extieee = cent->ic_ieee;
2588 c->ic_flags &= ~IEEE80211_CHAN_HT;
2589 c->ic_flags |= IEEE80211_CHAN_HT40D;
2594 iwn_read_eeprom_channels(struct iwn_softc *sc)
2596 #define N(a) (sizeof(a)/sizeof(a[0]))
2597 static const struct iwn_chan_band iwn_bands[] = {
2598 { IWN_EEPROM_BAND1, IEEE80211_CHAN_G, 14,
2599 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 } },
2600 { IWN_EEPROM_BAND2, IEEE80211_CHAN_A, 13,
2601 { 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 } },
2602 { IWN_EEPROM_BAND3, IEEE80211_CHAN_A, 12,
2603 { 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 } },
2604 { IWN_EEPROM_BAND4, IEEE80211_CHAN_A, 11,
2605 { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 } },
2606 { IWN_EEPROM_BAND5, IEEE80211_CHAN_A, 6,
2607 { 145, 149, 153, 157, 161, 165 } },
2608 { IWN_EEPROM_BAND6, IEEE80211_CHAN_G | IEEE80211_CHAN_HT40, 7,
2609 { 1, 2, 3, 4, 5, 6, 7 } },
2610 { IWN_EEPROM_BAND7, IEEE80211_CHAN_A | IEEE80211_CHAN_HT40, 11,
2611 { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 } }
2613 struct ifnet *ifp = sc->sc_ifp;
2614 struct ieee80211com *ic = ifp->if_l2com;
2617 /* read the list of authorized channels */
2618 for (i = 0; i < N(iwn_bands)-2; i++)
2619 iwn_read_eeprom_band(sc, &iwn_bands[i]);
2620 for (; i < N(iwn_bands); i++)
2621 iwn_read_eeprom_ht40(sc, &iwn_bands[i]);
2622 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
2628 iwn_print_power_group(struct iwn_softc *sc, int i)
2630 struct iwn_eeprom_band *band = &sc->bands[i];
2631 struct iwn_eeprom_chan_samples *chans = band->chans;
2634 printf("===band %d===\n", i);
2635 printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi);
2636 printf("chan1 num=%d\n", chans[0].num);
2637 for (c = 0; c < IWN_NTXCHAINS; c++) {
2638 for (j = 0; j < IWN_NSAMPLES; j++) {
2639 printf("chain %d, sample %d: temp=%d gain=%d "
2640 "power=%d pa_det=%d\n", c, j,
2641 chans[0].samples[c][j].temp,
2642 chans[0].samples[c][j].gain,
2643 chans[0].samples[c][j].power,
2644 chans[0].samples[c][j].pa_det);
2647 printf("chan2 num=%d\n", chans[1].num);
2648 for (c = 0; c < IWN_NTXCHAINS; c++) {
2649 for (j = 0; j < IWN_NSAMPLES; j++) {
2650 printf("chain %d, sample %d: temp=%d gain=%d "
2651 "power=%d pa_det=%d\n", c, j,
2652 chans[1].samples[c][j].temp,
2653 chans[1].samples[c][j].gain,
2654 chans[1].samples[c][j].power,
2655 chans[1].samples[c][j].pa_det);
2662 * Send a command to the firmware.
2665 iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
2667 struct iwn_tx_ring *ring = &sc->txq[4];
2668 struct iwn_tx_desc *desc;
2669 struct iwn_tx_cmd *cmd;
2672 IWN_LOCK_ASSERT(sc);
2674 KASSERT(size <= sizeof cmd->data, ("Command too big"));
2676 desc = &ring->desc[ring->cur];
2677 cmd = &ring->cmd[ring->cur];
2681 cmd->qid = ring->qid;
2682 cmd->idx = ring->cur;
2683 memcpy(cmd->data, buf, size);
2685 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2687 IWN_SET_DESC_NSEGS(desc, 1);
2688 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + size);
2689 sc->shared->len[ring->qid][ring->cur] = htole16(8);
2690 if (ring->cur < IWN_TX_WINDOW) {
2691 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2695 DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n",
2696 __func__, iwn_intr_str(cmd->code), cmd->code,
2697 cmd->flags, cmd->qid, cmd->idx);
2700 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2701 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2703 return async ? 0 : msleep(cmd, &sc->sc_mtx, PCATCH, "iwncmd", hz);
2706 static const uint8_t iwn_ridx_to_plcp[] = {
2707 10, 20, 55, 110, /* CCK */
2708 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 0x3 /* OFDM R1-R4 */
2710 static const uint8_t iwn_siso_mcs_to_plcp[] = {
2711 0, 0, 0, 0, /* CCK */
2712 0, 0, 1, 2, 3, 4, 5, 6, 7 /* HT */
2714 static const uint8_t iwn_mimo_mcs_to_plcp[] = {
2715 0, 0, 0, 0, /* CCK */
2716 8, 8, 9, 10, 11, 12, 13, 14, 15 /* HT */
2718 static const uint8_t iwn_prev_ridx[] = {
2719 /* NB: allow fallback from CCK11 to OFDM9 and from OFDM6 to CCK5 */
2720 0, 0, 1, 5, /* CCK */
2721 2, 4, 3, 6, 7, 8, 9, 10, 10 /* OFDM */
2725 * Configure hardware link parameters for the specified
2726 * node operating on the specified channel.
2729 iwn_set_link_quality(struct iwn_softc *sc, uint8_t id,
2730 const struct ieee80211_channel *c, int async)
2732 struct iwn_cmd_link_quality lq;
2735 memset(&lq, 0, sizeof(lq));
2737 if (IEEE80211_IS_CHAN_HT(c)) {
2743 if (id == IWN_ID_BSS)
2744 ridx = IWN_RATE_OFDM54;
2745 else if (IEEE80211_IS_CHAN_A(c))
2746 ridx = IWN_RATE_OFDM6;
2748 ridx = IWN_RATE_CCK1;
2749 for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
2750 /* XXX toggle antenna for retry patterns */
2751 if (IEEE80211_IS_CHAN_HT40(c)) {
2752 lq.table[i].rate = iwn_mimo_mcs_to_plcp[ridx]
2754 lq.table[i].rflags = IWN_RFLAG_HT
2758 } else if (IEEE80211_IS_CHAN_HT(c)) {
2759 lq.table[i].rate = iwn_siso_mcs_to_plcp[ridx]
2761 lq.table[i].rflags = IWN_RFLAG_HT
2765 lq.table[i].rate = iwn_ridx_to_plcp[ridx];
2766 if (ridx <= IWN_RATE_CCK11)
2767 lq.table[i].rflags = IWN_RFLAG_CCK;
2768 lq.table[i].rflags |= IWN_RFLAG_ANT_B;
2770 ridx = iwn_prev_ridx[ridx];
2774 lq.ampdu_disable = 3;
2775 lq.ampdu_limit = htole16(4000);
2777 if (sc->sc_debug & IWN_DEBUG_STATE) {
2778 printf("%s: set link quality for node %d, mimo %d ssmask %d\n",
2779 __func__, id, lq.mimo, lq.ssmask);
2780 printf("%s:", __func__);
2781 for (i = 0; i < IWN_MAX_TX_RETRIES; i++)
2782 printf(" %d:%x", lq.table[i].rate, lq.table[i].rflags);
2786 return iwn_cmd(sc, IWN_CMD_TX_LINK_QUALITY, &lq, sizeof(lq), async);
2792 * Install a pairwise key into the hardware.
2795 iwn_set_key(struct ieee80211com *ic, struct ieee80211_node *ni,
2796 const struct ieee80211_key *k)
2798 struct iwn_softc *sc = ic->ic_softc;
2799 struct iwn_node_info node;
2801 if (k->k_flags & IEEE80211_KEY_GROUP)
2804 memset(&node, 0, sizeof node);
2806 switch (k->k_cipher) {
2807 case IEEE80211_CIPHER_CCMP:
2808 node.security = htole16(IWN_CIPHER_CCMP);
2809 memcpy(node.key, k->k_key, k->k_len);
2815 node.id = IWN_ID_BSS;
2816 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
2817 node.control = IWN_NODE_UPDATE;
2818 node.flags = IWN_FLAG_SET_KEY;
2820 return iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
2825 iwn_wme_update(struct ieee80211com *ic)
2827 #define IWN_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */
2828 #define IWN_TXOP_TO_US(v) (v<<5)
2829 struct iwn_softc *sc = ic->ic_ifp->if_softc;
2830 struct iwn_edca_params cmd;
2833 memset(&cmd, 0, sizeof cmd);
2834 cmd.flags = htole32(IWN_EDCA_UPDATE);
2835 for (i = 0; i < WME_NUM_AC; i++) {
2836 const struct wmeParams *wmep =
2837 &ic->ic_wme.wme_chanParams.cap_wmeParams[i];
2838 cmd.ac[i].aifsn = wmep->wmep_aifsn;
2839 cmd.ac[i].cwmin = htole16(IWN_EXP2(wmep->wmep_logcwmin));
2840 cmd.ac[i].cwmax = htole16(IWN_EXP2(wmep->wmep_logcwmax));
2841 cmd.ac[i].txoplimit =
2842 htole16(IWN_TXOP_TO_US(wmep->wmep_txopLimit));
2845 (void) iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1 /*async*/);
2848 #undef IWN_TXOP_TO_US
2853 iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
2855 struct iwn_cmd_led led;
2858 led.unit = htole32(100000); /* on/off in unit of 100ms */
2862 (void) iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1);
2866 * Set the critical temperature at which the firmware will automatically stop
2867 * the radio transmitter.
2870 iwn_set_critical_temp(struct iwn_softc *sc)
2872 struct iwn_ucode_info *uc = &sc->ucode_info;
2873 struct iwn_critical_temp crit;
2874 uint32_t r1, r2, r3, temp;
2876 r1 = le32toh(uc->temp[0].chan20MHz);
2877 r2 = le32toh(uc->temp[1].chan20MHz);
2878 r3 = le32toh(uc->temp[2].chan20MHz);
2879 /* inverse function of iwn_get_temperature() */
2880 temp = r2 + (IWN_CTOK(110) * (r3 - r1)) / 259;
2882 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_CTEMP_STOP_RF);
2884 memset(&crit, 0, sizeof crit);
2885 crit.tempR = htole32(temp);
2886 DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %u\n", temp);
2887 return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
2891 iwn_enable_tsf(struct iwn_softc *sc, struct ieee80211_node *ni)
2893 struct iwn_cmd_tsf tsf;
2896 memset(&tsf, 0, sizeof tsf);
2897 memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
2898 tsf.bintval = htole16(ni->ni_intval);
2899 tsf.lintval = htole16(10);
2902 /* compute remaining time until next beacon */
2903 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */
2904 DPRINTF(sc, IWN_DEBUG_ANY, "%s: val = %ju %s\n", __func__,
2905 val, val == 0 ? "correcting" : "");
2908 mod = le64toh(tsf.tstamp) % val;
2909 tsf.binitval = htole32((uint32_t)(val - mod));
2911 DPRINTF(sc, IWN_DEBUG_RESET, "TSF bintval=%u tstamp=%ju, init=%u\n",
2912 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod));
2914 if (iwn_cmd(sc, IWN_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
2915 device_printf(sc->sc_dev,
2916 "%s: could not enable TSF\n", __func__);
2920 iwn_power_calibration(struct iwn_softc *sc, int temp)
2922 struct ifnet *ifp = sc->sc_ifp;
2923 struct ieee80211com *ic = ifp->if_l2com;
2925 KASSERT(ic->ic_state == IEEE80211_S_RUN, ("not running"));
2927 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
2928 __func__, sc->temp, temp);
2930 /* adjust Tx power if need be (delta >= 3°C) */
2931 if (abs(temp - sc->temp) < 3)
2936 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: set Tx power for channel %d\n",
2937 __func__, ieee80211_chan2ieee(ic, ic->ic_bsschan));
2938 if (iwn_set_txpower(sc, ic->ic_bsschan, 1) != 0) {
2939 /* just warn, too bad for the automatic calibration... */
2940 device_printf(sc->sc_dev,
2941 "%s: could not adjust Tx power\n", __func__);
2946 * Set Tx power for a given channel (each rate has its own power settings).
2947 * This function takes into account the regulatory information from EEPROM,
2948 * the current temperature and the current voltage.
2951 iwn_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch, int async)
2953 /* fixed-point arithmetic division using a n-bit fractional part */
2954 #define fdivround(a, b, n) \
2955 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
2956 /* linear interpolation */
2957 #define interpolate(x, x1, y1, x2, y2, n) \
2958 ((y1) + fdivround(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
2960 static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 };
2961 struct ifnet *ifp = sc->sc_ifp;
2962 struct ieee80211com *ic = ifp->if_l2com;
2963 struct iwn_ucode_info *uc = &sc->ucode_info;
2964 struct iwn_cmd_txpower cmd;
2965 struct iwn_eeprom_chan_samples *chans;
2966 const uint8_t *rf_gain, *dsp_gain;
2967 int32_t vdiff, tdiff;
2968 int i, c, grp, maxpwr;
2971 /* get channel number */
2972 chan = ieee80211_chan2ieee(ic, ch);
2974 memset(&cmd, 0, sizeof cmd);
2975 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
2978 if (IEEE80211_IS_CHAN_5GHZ(ch)) {
2979 maxpwr = sc->maxpwr5GHz;
2980 rf_gain = iwn_rf_gain_5ghz;
2981 dsp_gain = iwn_dsp_gain_5ghz;
2983 maxpwr = sc->maxpwr2GHz;
2984 rf_gain = iwn_rf_gain_2ghz;
2985 dsp_gain = iwn_dsp_gain_2ghz;
2988 /* compute voltage compensation */
2989 vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7;
2994 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
2995 "%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n",
2996 __func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage);
2998 /* get channel's attenuation group */
2999 if (chan <= 20) /* 1-20 */
3001 else if (chan <= 43) /* 34-43 */
3003 else if (chan <= 70) /* 44-70 */
3005 else if (chan <= 124) /* 71-124 */
3009 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3010 "%s: chan %d, attenuation group=%d\n", __func__, chan, grp);
3012 /* get channel's sub-band */
3013 for (i = 0; i < IWN_NBANDS; i++)
3014 if (sc->bands[i].lo != 0 &&
3015 sc->bands[i].lo <= chan && chan <= sc->bands[i].hi)
3017 chans = sc->bands[i].chans;
3018 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3019 "%s: chan %d sub-band=%d\n", __func__, chan, i);
3021 for (c = 0; c < IWN_NTXCHAINS; c++) {
3022 uint8_t power, gain, temp;
3023 int maxchpwr, pwr, ridx, idx;
3025 power = interpolate(chan,
3026 chans[0].num, chans[0].samples[c][1].power,
3027 chans[1].num, chans[1].samples[c][1].power, 1);
3028 gain = interpolate(chan,
3029 chans[0].num, chans[0].samples[c][1].gain,
3030 chans[1].num, chans[1].samples[c][1].gain, 1);
3031 temp = interpolate(chan,
3032 chans[0].num, chans[0].samples[c][1].temp,
3033 chans[1].num, chans[1].samples[c][1].temp, 1);
3034 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3035 "%s: Tx chain %d: power=%d gain=%d temp=%d\n",
3036 __func__, c, power, gain, temp);
3038 /* compute temperature compensation */
3039 tdiff = ((sc->temp - temp) * 2) / tdiv[grp];
3040 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3041 "%s: temperature compensation=%d (current=%d, EEPROM=%d)\n",
3042 __func__, tdiff, sc->temp, temp);
3044 for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) {
3045 maxchpwr = ch->ic_maxpower;
3046 if ((ridx / 8) & 1) {
3047 /* MIMO: decrease Tx power (-3dB) */
3053 /* decrease power for highest OFDM rates */
3054 if ((ridx % 8) == 5) /* 48Mbit/s */
3056 else if ((ridx % 8) == 6) /* 54Mbit/s */
3058 else if ((ridx % 8) == 7) /* 60Mbit/s */
3064 idx = gain - (pwr - power) - tdiff - vdiff;
3065 if ((ridx / 8) & 1) /* MIMO */
3066 idx += (int32_t)le32toh(uc->atten[grp][c]);
3069 idx += 9; /* 5GHz */
3070 if (ridx == IWN_RIDX_MAX)
3073 /* make sure idx stays in a valid range */
3076 else if (idx > IWN_MAX_PWR_INDEX)
3077 idx = IWN_MAX_PWR_INDEX;
3079 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3080 "%s: Tx chain %d, rate idx %d: power=%d\n",
3081 __func__, c, ridx, idx);
3082 cmd.power[ridx].rf_gain[c] = rf_gain[idx];
3083 cmd.power[ridx].dsp_gain[c] = dsp_gain[idx];
3087 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3088 "%s: set tx power for chan %d\n", __func__, chan);
3089 return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async);
3096 * Get the best (maximum) RSSI among the
3097 * connected antennas and convert to dBm.
3100 iwn_get_rssi(struct iwn_softc *sc, const struct iwn_rx_stat *stat)
3102 int mask, agc, rssi;
3104 mask = (le16toh(stat->antenna) >> 4) & 0x7;
3105 agc = (le16toh(stat->agc) >> 7) & 0x7f;
3109 if (mask & (1 << 0)) /* Ant A */
3110 rssi = max(rssi, stat->rssi[0]);
3111 if (mask & (1 << 1)) /* Ant B */
3112 rssi = max(rssi, stat->rssi[2]);
3113 if (mask & (1 << 2)) /* Ant C */
3114 rssi = max(rssi, stat->rssi[4]);
3116 rssi = max(rssi, stat->rssi[0]);
3117 rssi = max(rssi, stat->rssi[2]);
3118 rssi = max(rssi, stat->rssi[4]);
3120 DPRINTF(sc, IWN_DEBUG_RECV, "%s: agc %d mask 0x%x rssi %d %d %d "
3121 "result %d\n", __func__, agc, mask,
3122 stat->rssi[0], stat->rssi[2], stat->rssi[4],
3123 rssi - agc - IWN_RSSI_TO_DBM);
3124 return rssi - agc - IWN_RSSI_TO_DBM;
3128 * Get the average noise among Rx antennas (in dBm).
3131 iwn_get_noise(const struct iwn_rx_general_stats *stats)
3133 int i, total, nbant, noise;
3136 for (i = 0; i < 3; i++) {
3137 noise = le32toh(stats->noise[i]) & 0xff;
3143 /* there should be at least one antenna but check anyway */
3144 return (nbant == 0) ? -127 : (total / nbant) - 107;
3148 * Read temperature (in degC) from the on-board thermal sensor.
3151 iwn_get_temperature(struct iwn_softc *sc)
3153 struct iwn_ucode_info *uc = &sc->ucode_info;
3154 int32_t r1, r2, r3, r4, temp;
3156 r1 = le32toh(uc->temp[0].chan20MHz);
3157 r2 = le32toh(uc->temp[1].chan20MHz);
3158 r3 = le32toh(uc->temp[2].chan20MHz);
3159 r4 = le32toh(sc->rawtemp);
3161 if (r1 == r3) /* prevents division by 0 (should not happen) */
3164 /* sign-extend 23-bit R4 value to 32-bit */
3165 r4 = (r4 << 8) >> 8;
3166 /* compute temperature */
3167 temp = (259 * (r4 - r2)) / (r3 - r1);
3168 temp = (temp * 97) / 100 + 8;
3170 return IWN_KTOC(temp);
3174 * Initialize sensitivity calibration state machine.
3177 iwn_init_sensitivity(struct iwn_softc *sc)
3179 struct iwn_calib_state *calib = &sc->calib;
3180 struct iwn_phy_calib_cmd cmd;
3183 /* reset calibration state */
3184 memset(calib, 0, sizeof (*calib));
3185 calib->state = IWN_CALIB_STATE_INIT;
3186 calib->cck_state = IWN_CCK_STATE_HIFA;
3187 /* initial values taken from the reference driver */
3188 calib->corr_ofdm_x1 = 105;
3189 calib->corr_ofdm_mrc_x1 = 220;
3190 calib->corr_ofdm_x4 = 90;
3191 calib->corr_ofdm_mrc_x4 = 170;
3192 calib->corr_cck_x4 = 125;
3193 calib->corr_cck_mrc_x4 = 200;
3194 calib->energy_cck = 100;
3196 /* write initial sensitivity values */
3197 error = iwn_send_sensitivity(sc);
3201 memset(&cmd, 0, sizeof cmd);
3202 cmd.code = IWN_SET_DIFF_GAIN;
3203 /* differential gains initially set to 0 for all 3 antennas */
3204 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: calibrate phy\n", __func__);
3205 return iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1);
3209 * Collect noise and RSSI statistics for the first 20 beacons received
3210 * after association and use them to determine connected antennas and
3211 * set differential gains.
3214 iwn_compute_differential_gain(struct iwn_softc *sc,
3215 const struct iwn_rx_general_stats *stats)
3217 struct iwn_calib_state *calib = &sc->calib;
3218 struct iwn_phy_calib_cmd cmd;
3221 /* accumulate RSSI and noise for all 3 antennas */
3222 for (i = 0; i < 3; i++) {
3223 calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff;
3224 calib->noise[i] += le32toh(stats->noise[i]) & 0xff;
3227 /* we update differential gain only once after 20 beacons */
3228 if (++calib->nbeacons < 20)
3231 /* determine antenna with highest average RSSI */
3232 val = max(calib->rssi[0], calib->rssi[1]);
3233 val = max(calib->rssi[2], val);
3235 /* determine which antennas are connected */
3237 for (i = 0; i < 3; i++)
3238 if (val - calib->rssi[i] <= 15 * 20)
3239 sc->antmsk |= 1 << i;
3240 /* if neither Ant A and Ant B are connected.. */
3241 if ((sc->antmsk & (1 << 0 | 1 << 1)) == 0)
3242 sc->antmsk |= 1 << 1; /* ..mark Ant B as connected! */
3244 /* get minimal noise among connected antennas */
3245 val = INT_MAX; /* ok, there's at least one */
3246 for (i = 0; i < 3; i++)
3247 if (sc->antmsk & (1 << i))
3248 val = min(calib->noise[i], val);
3250 memset(&cmd, 0, sizeof cmd);
3251 cmd.code = IWN_SET_DIFF_GAIN;
3252 /* set differential gains for connected antennas */
3253 for (i = 0; i < 3; i++) {
3254 if (sc->antmsk & (1 << i)) {
3255 cmd.gain[i] = (calib->noise[i] - val) / 30;
3256 /* limit differential gain to 3 */
3257 cmd.gain[i] = min(cmd.gain[i], 3);
3258 cmd.gain[i] |= IWN_GAIN_SET;
3261 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3262 "%s: set differential gains Ant A/B/C: %x/%x/%x (%x)\n",
3263 __func__,cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->antmsk);
3264 if (iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1) == 0)
3265 calib->state = IWN_CALIB_STATE_RUN;
3269 * Tune RF Rx sensitivity based on the number of false alarms detected
3270 * during the last beacon period.
3273 iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
3275 #define inc_clip(val, inc, max) \
3276 if ((val) < (max)) { \
3277 if ((val) < (max) - (inc)) \
3283 #define dec_clip(val, dec, min) \
3284 if ((val) > (min)) { \
3285 if ((val) > (min) + (dec)) \
3292 struct iwn_calib_state *calib = &sc->calib;
3293 uint32_t val, rxena, fa;
3294 uint32_t energy[3], energy_min;
3295 uint8_t noise[3], noise_ref;
3296 int i, needs_update = 0;
3298 /* check that we've been enabled long enough */
3299 if ((rxena = le32toh(stats->general.load)) == 0)
3302 /* compute number of false alarms since last call for OFDM */
3303 fa = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm;
3304 fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm;
3305 fa *= 200 * 1024; /* 200TU */
3307 /* save counters values for next call */
3308 calib->bad_plcp_ofdm = le32toh(stats->ofdm.bad_plcp);
3309 calib->fa_ofdm = le32toh(stats->ofdm.fa);
3311 if (fa > 50 * rxena) {
3312 /* high false alarm count, decrease sensitivity */
3313 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3314 "%s: OFDM high false alarm count: %u\n", __func__, fa);
3315 inc_clip(calib->corr_ofdm_x1, 1, 140);
3316 inc_clip(calib->corr_ofdm_mrc_x1, 1, 270);
3317 inc_clip(calib->corr_ofdm_x4, 1, 120);
3318 inc_clip(calib->corr_ofdm_mrc_x4, 1, 210);
3320 } else if (fa < 5 * rxena) {
3321 /* low false alarm count, increase sensitivity */
3322 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3323 "%s: OFDM low false alarm count: %u\n", __func__, fa);
3324 dec_clip(calib->corr_ofdm_x1, 1, 105);
3325 dec_clip(calib->corr_ofdm_mrc_x1, 1, 220);
3326 dec_clip(calib->corr_ofdm_x4, 1, 85);
3327 dec_clip(calib->corr_ofdm_mrc_x4, 1, 170);
3330 /* compute maximum noise among 3 antennas */
3331 for (i = 0; i < 3; i++)
3332 noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff;
3333 val = max(noise[0], noise[1]);
3334 val = max(noise[2], val);
3335 /* insert it into our samples table */
3336 calib->noise_samples[calib->cur_noise_sample] = val;
3337 calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20;
3339 /* compute maximum noise among last 20 samples */
3340 noise_ref = calib->noise_samples[0];
3341 for (i = 1; i < 20; i++)
3342 noise_ref = max(noise_ref, calib->noise_samples[i]);
3344 /* compute maximum energy among 3 antennas */
3345 for (i = 0; i < 3; i++)
3346 energy[i] = le32toh(stats->general.energy[i]);
3347 val = min(energy[0], energy[1]);
3348 val = min(energy[2], val);
3349 /* insert it into our samples table */
3350 calib->energy_samples[calib->cur_energy_sample] = val;
3351 calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10;
3353 /* compute minimum energy among last 10 samples */
3354 energy_min = calib->energy_samples[0];
3355 for (i = 1; i < 10; i++)
3356 energy_min = max(energy_min, calib->energy_samples[i]);
3359 /* compute number of false alarms since last call for CCK */
3360 fa = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck;
3361 fa += le32toh(stats->cck.fa) - calib->fa_cck;
3362 fa *= 200 * 1024; /* 200TU */
3364 /* save counters values for next call */
3365 calib->bad_plcp_cck = le32toh(stats->cck.bad_plcp);
3366 calib->fa_cck = le32toh(stats->cck.fa);
3368 if (fa > 50 * rxena) {
3369 /* high false alarm count, decrease sensitivity */
3370 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3371 "%s: CCK high false alarm count: %u\n", __func__, fa);
3372 calib->cck_state = IWN_CCK_STATE_HIFA;
3375 if (calib->corr_cck_x4 > 160) {
3376 calib->noise_ref = noise_ref;
3377 if (calib->energy_cck > 2)
3378 dec_clip(calib->energy_cck, 2, energy_min);
3380 if (calib->corr_cck_x4 < 160) {
3381 calib->corr_cck_x4 = 161;
3384 inc_clip(calib->corr_cck_x4, 3, 200);
3386 inc_clip(calib->corr_cck_mrc_x4, 3, 400);
3388 } else if (fa < 5 * rxena) {
3389 /* low false alarm count, increase sensitivity */
3390 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3391 "%s: CCK low false alarm count: %u\n", __func__, fa);
3392 calib->cck_state = IWN_CCK_STATE_LOFA;
3395 if (calib->cck_state != 0 &&
3396 ((calib->noise_ref - noise_ref) > 2 ||
3397 calib->low_fa > 100)) {
3398 inc_clip(calib->energy_cck, 2, 97);
3399 dec_clip(calib->corr_cck_x4, 3, 125);
3400 dec_clip(calib->corr_cck_mrc_x4, 3, 200);
3403 /* not worth to increase or decrease sensitivity */
3404 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3405 "%s: CCK normal false alarm count: %u\n", __func__, fa);
3407 calib->noise_ref = noise_ref;
3409 if (calib->cck_state == IWN_CCK_STATE_HIFA) {
3410 /* previous interval had many false alarms */
3411 dec_clip(calib->energy_cck, 8, energy_min);
3413 calib->cck_state = IWN_CCK_STATE_INIT;
3417 (void)iwn_send_sensitivity(sc);
3423 iwn_send_sensitivity(struct iwn_softc *sc)
3425 struct iwn_calib_state *calib = &sc->calib;
3426 struct iwn_sensitivity_cmd cmd;
3428 memset(&cmd, 0, sizeof cmd);
3429 cmd.which = IWN_SENSITIVITY_WORKTBL;
3430 /* OFDM modulation */
3431 cmd.corr_ofdm_x1 = htole16(calib->corr_ofdm_x1);
3432 cmd.corr_ofdm_mrc_x1 = htole16(calib->corr_ofdm_mrc_x1);
3433 cmd.corr_ofdm_x4 = htole16(calib->corr_ofdm_x4);
3434 cmd.corr_ofdm_mrc_x4 = htole16(calib->corr_ofdm_mrc_x4);
3435 cmd.energy_ofdm = htole16(100);
3436 cmd.energy_ofdm_th = htole16(62);
3437 /* CCK modulation */
3438 cmd.corr_cck_x4 = htole16(calib->corr_cck_x4);
3439 cmd.corr_cck_mrc_x4 = htole16(calib->corr_cck_mrc_x4);
3440 cmd.energy_cck = htole16(calib->energy_cck);
3441 /* Barker modulation: use default values */
3442 cmd.corr_barker = htole16(190);
3443 cmd.corr_barker_mrc = htole16(390);
3445 DPRINTF(sc, IWN_DEBUG_RESET,
3446 "%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
3447 calib->corr_ofdm_x1, calib->corr_ofdm_mrc_x1, calib->corr_ofdm_x4,
3448 calib->corr_ofdm_mrc_x4, calib->corr_cck_x4,
3449 calib->corr_cck_mrc_x4, calib->energy_cck);
3450 return iwn_cmd(sc, IWN_SENSITIVITY, &cmd, sizeof cmd, 1);
3454 iwn_auth(struct iwn_softc *sc)
3456 struct ifnet *ifp = sc->sc_ifp;
3457 struct ieee80211com *ic = ifp->if_l2com;
3458 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); /*XXX*/
3459 struct ieee80211_node *ni = vap->iv_bss;
3460 struct iwn_node_info node;
3463 sc->calib.state = IWN_CALIB_STATE_INIT;
3465 /* update adapter's configuration */
3466 sc->config.associd = 0;
3467 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
3468 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ni->ni_chan));
3469 sc->config.flags = htole32(IWN_CONFIG_TSF);
3470 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan))
3471 sc->config.flags |= htole32(IWN_CONFIG_AUTO | IWN_CONFIG_24GHZ);
3472 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
3473 sc->config.cck_mask = 0;
3474 sc->config.ofdm_mask = 0x15;
3475 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
3476 sc->config.cck_mask = 0x03;
3477 sc->config.ofdm_mask = 0;
3479 /* XXX assume 802.11b/g */
3480 sc->config.cck_mask = 0x0f;
3481 sc->config.ofdm_mask = 0x15;
3483 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3484 sc->config.flags |= htole32(IWN_CONFIG_SHSLOT);
3485 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
3486 sc->config.flags |= htole32(IWN_CONFIG_SHPREAMBLE);
3487 sc->config.filter &= ~htole32(IWN_FILTER_BSS);
3489 DPRINTF(sc, IWN_DEBUG_STATE,
3490 "%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
3491 "ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
3492 "myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
3494 le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
3495 sc->config.cck_mask, sc->config.ofdm_mask,
3496 sc->config.ht_single_mask, sc->config.ht_dual_mask,
3497 le16toh(sc->config.rxchain),
3498 sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
3499 le16toh(sc->config.associd), le32toh(sc->config.filter));
3500 error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
3501 sizeof (struct iwn_config), 1);
3503 device_printf(sc->sc_dev,
3504 "%s: could not configure, error %d\n", __func__, error);
3507 sc->sc_curchan = ic->ic_curchan;
3509 /* configuration has changed, set Tx power accordingly */
3510 error = iwn_set_txpower(sc, ni->ni_chan, 1);
3512 device_printf(sc->sc_dev,
3513 "%s: could not set Tx power, error %d\n", __func__, error);
3518 * Reconfiguring clears the adapter's nodes table so we must
3519 * add the broadcast node again.
3521 memset(&node, 0, sizeof node);
3522 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr);
3523 node.id = IWN_ID_BROADCAST;
3524 DPRINTF(sc, IWN_DEBUG_STATE, "%s: add broadcast node\n", __func__);
3525 error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
3527 device_printf(sc->sc_dev,
3528 "%s: could not add broadcast node, error %d\n",
3532 error = iwn_set_link_quality(sc, node.id, ic->ic_curchan, 1);
3534 device_printf(sc->sc_dev,
3535 "%s: could not setup MRR for broadcast node, error %d\n",
3544 * Configure the adapter for associated state.
3547 iwn_run(struct iwn_softc *sc)
3549 #define MS(v,x) (((v) & x) >> x##_S)
3550 struct ifnet *ifp = sc->sc_ifp;
3551 struct ieee80211com *ic = ifp->if_l2com;
3552 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); /*XXX*/
3553 struct ieee80211_node *ni = vap->iv_bss;
3554 struct iwn_node_info node;
3555 int error, maxrxampdu, ampdudensity;
3557 sc->calib.state = IWN_CALIB_STATE_INIT;
3559 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3560 /* link LED blinks while monitoring */
3561 iwn_set_led(sc, IWN_LED_LINK, 5, 5);
3565 iwn_enable_tsf(sc, ni);
3567 /* update adapter's configuration */
3568 sc->config.associd = htole16(IEEE80211_AID(ni->ni_associd));
3569 /* short preamble/slot time are negotiated when associating */
3570 sc->config.flags &= ~htole32(IWN_CONFIG_SHPREAMBLE | IWN_CONFIG_SHSLOT);
3571 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3572 sc->config.flags |= htole32(IWN_CONFIG_SHSLOT);
3573 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
3574 sc->config.flags |= htole32(IWN_CONFIG_SHPREAMBLE);
3575 if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
3576 sc->config.flags &= ~htole32(IWN_CONFIG_HT);
3577 if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
3578 sc->config.flags |= htole32(IWN_CONFIG_HT40U);
3579 else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
3580 sc->config.flags |= htole32(IWN_CONFIG_HT40D);
3582 sc->config.flags |= htole32(IWN_CONFIG_HT20);
3583 sc->config.rxchain = htole16(
3584 (3 << IWN_RXCHAIN_VALID_S)
3585 | (3 << IWN_RXCHAIN_MIMO_CNT_S)
3586 | (1 << IWN_RXCHAIN_CNT_S)
3587 | IWN_RXCHAIN_MIMO_FORCE);
3589 maxrxampdu = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
3590 ampdudensity = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
3592 maxrxampdu = ampdudensity = 0;
3593 sc->config.filter |= htole32(IWN_FILTER_BSS);
3595 DPRINTF(sc, IWN_DEBUG_STATE,
3596 "%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
3597 "ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
3598 "myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
3600 le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
3601 sc->config.cck_mask, sc->config.ofdm_mask,
3602 sc->config.ht_single_mask, sc->config.ht_dual_mask,
3603 le16toh(sc->config.rxchain),
3604 sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
3605 le16toh(sc->config.associd), le32toh(sc->config.filter));
3606 error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
3607 sizeof (struct iwn_config), 1);
3609 device_printf(sc->sc_dev,
3610 "%s: could not update configuration, error %d\n",
3614 sc->sc_curchan = ni->ni_chan;
3616 /* configuration has changed, set Tx power accordingly */
3617 error = iwn_set_txpower(sc, ni->ni_chan, 1);
3619 device_printf(sc->sc_dev,
3620 "%s: could not set Tx power, error %d\n", __func__, error);
3625 memset(&node, 0, sizeof node);
3626 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
3627 node.id = IWN_ID_BSS;
3628 node.htflags = htole32(
3629 (maxrxampdu << IWN_MAXRXAMPDU_S) |
3630 (ampdudensity << IWN_MPDUDENSITY_S));
3631 DPRINTF(sc, IWN_DEBUG_STATE, "%s: add BSS node, id %d htflags 0x%x\n",
3632 __func__, node.id, le32toh(node.htflags));
3633 error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
3635 device_printf(sc->sc_dev,"could not add BSS node\n");
3638 error = iwn_set_link_quality(sc, node.id, ni->ni_chan, 1);
3640 device_printf(sc->sc_dev,
3641 "%s: could not setup MRR for node %d, error %d\n",
3642 __func__, node.id, error);
3646 if (ic->ic_opmode == IEEE80211_M_STA) {
3647 /* fake a join to init the tx rate */
3648 iwn_newassoc(ni, 1);
3651 error = iwn_init_sensitivity(sc);
3653 device_printf(sc->sc_dev,
3654 "%s: could not set sensitivity, error %d\n",
3659 /* start/restart periodic calibration timer */
3660 sc->calib.state = IWN_CALIB_STATE_ASSOC;
3661 iwn_calib_reset(sc);
3663 /* link LED always on while associated */
3664 iwn_set_led(sc, IWN_LED_LINK, 0, 1);
3671 * Send a scan request to the firmware. Since this command is huge, we map it
3672 * into a mbuf instead of using the pre-allocated set of commands.
3675 iwn_scan(struct iwn_softc *sc)
3677 struct ifnet *ifp = sc->sc_ifp;
3678 struct ieee80211com *ic = ifp->if_l2com;
3679 struct ieee80211_scan_state *ss = ic->ic_scan; /*XXX*/
3680 struct iwn_tx_ring *ring = &sc->txq[4];
3681 struct iwn_tx_desc *desc;
3682 struct iwn_tx_data *data;
3683 struct iwn_tx_cmd *cmd;
3684 struct iwn_cmd_data *tx;
3685 struct iwn_scan_hdr *hdr;
3686 struct iwn_scan_essid *essid;
3687 struct iwn_scan_chan *chan;
3688 struct ieee80211_frame *wh;
3689 struct ieee80211_rateset *rs;
3690 struct ieee80211_channel *c;
3691 enum ieee80211_phymode mode;
3693 int pktlen, error, nrates;
3694 bus_addr_t physaddr;
3696 desc = &ring->desc[ring->cur];
3697 data = &ring->data[ring->cur];
3700 data->m = m_getcl(M_DONTWAIT, MT_DATA, 0);
3701 if (data->m == NULL) {
3702 device_printf(sc->sc_dev,
3703 "%s: could not allocate mbuf for scan command\n", __func__);
3707 cmd = mtod(data->m, struct iwn_tx_cmd *);
3708 cmd->code = IWN_CMD_SCAN;
3710 cmd->qid = ring->qid;
3711 cmd->idx = ring->cur;
3713 hdr = (struct iwn_scan_hdr *)cmd->data;
3714 memset(hdr, 0, sizeof (struct iwn_scan_hdr));
3716 /* XXX use scan state */
3718 * Move to the next channel if no packets are received within 5 msecs
3719 * after sending the probe request (this helps to reduce the duration
3722 hdr->quiet = htole16(5); /* timeout in milliseconds */
3723 hdr->plcp_threshold = htole16(1); /* min # of packets */
3725 /* select Ant B and Ant C for scanning */
3726 hdr->rxchain = htole16(0x3e1 | (7 << IWN_RXCHAIN_VALID_S));
3728 tx = (struct iwn_cmd_data *)(hdr + 1);
3729 memset(tx, 0, sizeof (struct iwn_cmd_data));
3730 tx->flags = htole32(IWN_TX_AUTO_SEQ | 0x200); /* XXX */
3731 tx->id = IWN_ID_BROADCAST;
3732 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
3733 tx->rflags = IWN_RFLAG_ANT_B;
3735 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
3736 hdr->crc_threshold = htole16(1);
3737 /* send probe requests at 6Mbps */
3738 tx->rate = iwn_ridx_to_plcp[IWN_RATE_OFDM6];
3740 hdr->flags = htole32(IWN_CONFIG_24GHZ | IWN_CONFIG_AUTO);
3741 /* send probe requests at 1Mbps */
3742 tx->rate = iwn_ridx_to_plcp[IWN_RATE_CCK1];
3743 tx->rflags |= IWN_RFLAG_CCK;
3746 essid = (struct iwn_scan_essid *)(tx + 1);
3747 memset(essid, 0, 4 * sizeof (struct iwn_scan_essid));
3748 essid[0].id = IEEE80211_ELEMID_SSID;
3749 essid[0].len = ss->ss_ssid[0].len;
3750 memcpy(essid[0].data, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
3753 * Build a probe request frame. Most of the following code is a
3754 * copy & paste of what is done in net80211.
3756 wh = (struct ieee80211_frame *)&essid[4];
3757 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
3758 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
3759 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
3760 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
3761 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr);
3762 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
3763 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
3764 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
3766 frm = (uint8_t *)(wh + 1);
3769 *frm++ = IEEE80211_ELEMID_SSID;
3770 *frm++ = ss->ss_ssid[0].len;
3771 memcpy(frm, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
3772 frm += ss->ss_ssid[0].len;
3774 mode = ieee80211_chan2mode(ic->ic_curchan);
3775 rs = &ic->ic_sup_rates[mode];
3777 /* add supported rates IE */
3778 *frm++ = IEEE80211_ELEMID_RATES;
3779 nrates = rs->rs_nrates;
3780 if (nrates > IEEE80211_RATE_SIZE)
3781 nrates = IEEE80211_RATE_SIZE;
3783 memcpy(frm, rs->rs_rates, nrates);
3786 /* add supported xrates IE */
3787 if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
3788 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
3789 *frm++ = IEEE80211_ELEMID_XRATES;
3790 *frm++ = (uint8_t)nrates;
3791 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
3795 /* setup length of probe request */
3796 tx->len = htole16(frm - (uint8_t *)wh);
3799 chan = (struct iwn_scan_chan *)frm;
3800 chan->chan = ieee80211_chan2ieee(ic, c);
3802 if ((c->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) {
3803 chan->flags |= IWN_CHAN_ACTIVE;
3804 if (ss->ss_nssid > 0)
3805 chan->flags |= IWN_CHAN_DIRECT;
3807 chan->dsp_gain = 0x6e;
3808 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3809 chan->rf_gain = 0x3b;
3810 chan->active = htole16(10);
3811 chan->passive = htole16(110);
3813 chan->rf_gain = 0x28;
3814 chan->active = htole16(20);
3815 chan->passive = htole16(120);
3818 DPRINTF(sc, IWN_DEBUG_STATE, "%s: chan %u flags 0x%x rf_gain 0x%x "
3819 "dsp_gain 0x%x active 0x%x passive 0x%x\n", __func__,
3820 chan->chan, chan->flags, chan->rf_gain, chan->dsp_gain,
3821 chan->active, chan->passive);
3825 frm += sizeof (struct iwn_scan_chan);
3827 hdr->len = htole16(frm - (uint8_t *)hdr);
3828 pktlen = frm - (uint8_t *)cmd;
3830 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
3831 iwn_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
3833 device_printf(sc->sc_dev,
3834 "%s: could not map scan command, error %d\n",
3841 IWN_SET_DESC_NSEGS(desc, 1);
3842 IWN_SET_DESC_SEG(desc, 0, physaddr, pktlen);
3843 sc->shared->len[ring->qid][ring->cur] = htole16(8);
3844 if (ring->cur < IWN_TX_WINDOW)
3845 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
3848 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
3849 BUS_DMASYNC_PREWRITE);
3850 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
3853 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
3854 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
3856 return 0; /* will be notified async. of failure/success */
3860 iwn_config(struct iwn_softc *sc)
3862 struct ifnet *ifp = sc->sc_ifp;
3863 struct ieee80211com *ic = ifp->if_l2com;
3864 struct iwn_power power;
3865 struct iwn_bluetooth bluetooth;
3866 struct iwn_node_info node;
3869 /* set power mode */
3870 memset(&power, 0, sizeof power);
3871 power.flags = htole16(IWN_POWER_CAM | 0x8);
3872 DPRINTF(sc, IWN_DEBUG_RESET, "%s: set power mode\n", __func__);
3873 error = iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &power, sizeof power, 0);
3875 device_printf(sc->sc_dev,
3876 "%s: could not set power mode, error %d\n",
3881 /* configure bluetooth coexistence */
3882 memset(&bluetooth, 0, sizeof bluetooth);
3883 bluetooth.flags = 3;
3884 bluetooth.lead = 0xaa;
3886 DPRINTF(sc, IWN_DEBUG_RESET, "%s: config bluetooth coexistence\n",
3888 error = iwn_cmd(sc, IWN_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
3891 device_printf(sc->sc_dev,
3892 "%s: could not configure bluetooth coexistence, error %d\n",
3897 /* configure adapter */
3898 memset(&sc->config, 0, sizeof (struct iwn_config));
3899 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr);
3900 IEEE80211_ADDR_COPY(sc->config.wlap, ic->ic_myaddr);
3901 /* set default channel */
3902 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
3903 sc->config.flags = htole32(IWN_CONFIG_TSF);
3904 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
3905 sc->config.flags |= htole32(IWN_CONFIG_AUTO | IWN_CONFIG_24GHZ);
3906 sc->config.filter = 0;
3907 switch (ic->ic_opmode) {
3908 case IEEE80211_M_STA:
3909 sc->config.mode = IWN_MODE_STA;
3910 sc->config.filter |= htole32(IWN_FILTER_MULTICAST);
3912 case IEEE80211_M_IBSS:
3913 case IEEE80211_M_AHDEMO:
3914 sc->config.mode = IWN_MODE_IBSS;
3916 case IEEE80211_M_HOSTAP:
3917 sc->config.mode = IWN_MODE_HOSTAP;
3919 case IEEE80211_M_MONITOR:
3920 sc->config.mode = IWN_MODE_MONITOR;
3921 sc->config.filter |= htole32(IWN_FILTER_MULTICAST |
3922 IWN_FILTER_CTL | IWN_FILTER_PROMISC);
3927 sc->config.cck_mask = 0x0f; /* not yet negotiated */
3928 sc->config.ofdm_mask = 0xff; /* not yet negotiated */
3929 sc->config.ht_single_mask = 0xff;
3930 sc->config.ht_dual_mask = 0xff;
3931 sc->config.rxchain = htole16(0x2800 | (7 << IWN_RXCHAIN_VALID_S));
3933 DPRINTF(sc, IWN_DEBUG_STATE,
3934 "%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
3935 "ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
3936 "myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
3938 le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
3939 sc->config.cck_mask, sc->config.ofdm_mask,
3940 sc->config.ht_single_mask, sc->config.ht_dual_mask,
3941 le16toh(sc->config.rxchain),
3942 sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
3943 le16toh(sc->config.associd), le32toh(sc->config.filter));
3944 error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
3945 sizeof (struct iwn_config), 0);
3947 device_printf(sc->sc_dev,
3948 "%s: configure command failed, error %d\n",
3952 sc->sc_curchan = ic->ic_curchan;
3954 /* configuration has changed, set Tx power accordingly */
3955 error = iwn_set_txpower(sc, ic->ic_curchan, 0);
3957 device_printf(sc->sc_dev,
3958 "%s: could not set Tx power, error %d\n", __func__, error);
3962 /* add broadcast node */
3963 memset(&node, 0, sizeof node);
3964 IEEE80211_ADDR_COPY(node.macaddr, ic->ic_ifp->if_broadcastaddr);
3965 node.id = IWN_ID_BROADCAST;
3966 node.rate = iwn_plcp_signal(2);
3967 DPRINTF(sc, IWN_DEBUG_RESET, "%s: add broadcast node\n", __func__);
3968 error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 0);
3970 device_printf(sc->sc_dev,
3971 "%s: could not add broadcast node, error %d\n",
3975 error = iwn_set_link_quality(sc, node.id, ic->ic_curchan, 0);
3977 device_printf(sc->sc_dev,
3978 "%s: could not setup MRR for node %d, error %d\n",
3979 __func__, node.id, error);
3983 error = iwn_set_critical_temp(sc);
3985 device_printf(sc->sc_dev,
3986 "%s: could not set critical temperature, error %d\n",
3994 * Do post-alive initialization of the NIC (after firmware upload).
3997 iwn_post_alive(struct iwn_softc *sc)
4006 base = iwn_mem_read(sc, IWN_SRAM_BASE);
4007 for (offset = 0x380; offset < 0x520; offset += 4) {
4008 IWN_WRITE(sc, IWN_MEM_WADDR, base + offset);
4009 IWN_WRITE(sc, IWN_MEM_WDATA, 0);
4012 /* shared area is aligned on a 1K boundary */
4013 iwn_mem_write(sc, IWN_SRAM_BASE, sc->shared_dma.paddr >> 10);
4014 iwn_mem_write(sc, IWN_SELECT_QCHAIN, 0);
4016 for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
4017 iwn_mem_write(sc, IWN_QUEUE_RIDX(qid), 0);
4018 IWN_WRITE(sc, IWN_TX_WIDX, qid << 8 | 0);
4020 /* set sched. window size */
4021 IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid));
4022 IWN_WRITE(sc, IWN_MEM_WDATA, 64);
4023 /* set sched. frame limit */
4024 IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid) + 4);
4025 IWN_WRITE(sc, IWN_MEM_WDATA, 10 << 16);
4028 /* enable interrupts for all 16 queues */
4029 iwn_mem_write(sc, IWN_QUEUE_INTR_MASK, 0xffff);
4031 /* identify active Tx rings (0-7) */
4032 iwn_mem_write(sc, IWN_TX_ACTIVE, 0xff);
4034 /* mark Tx rings (4 EDCA + cmd + 2 HCCA) as active */
4035 for (qid = 0; qid < 7; qid++) {
4036 iwn_mem_write(sc, IWN_TXQ_STATUS(qid),
4037 IWN_TXQ_STATUS_ACTIVE | qid << 1);
4044 iwn_stop_master(struct iwn_softc *sc)
4049 tmp = IWN_READ(sc, IWN_RESET);
4050 IWN_WRITE(sc, IWN_RESET, tmp | IWN_STOP_MASTER);
4052 tmp = IWN_READ(sc, IWN_GPIO_CTL);
4053 if ((tmp & IWN_GPIO_PWR_STATUS) == IWN_GPIO_PWR_SLEEP)
4054 return; /* already asleep */
4056 for (ntries = 0; ntries < 100; ntries++) {
4057 if (IWN_READ(sc, IWN_RESET) & IWN_MASTER_DISABLED)
4062 device_printf(sc->sc_dev,
4063 "%s: timeout waiting for master\n", __func__);
4067 iwn_reset(struct iwn_softc *sc)
4072 /* clear any pending interrupts */
4073 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4075 tmp = IWN_READ(sc, IWN_CHICKEN);
4076 IWN_WRITE(sc, IWN_CHICKEN, tmp | IWN_CHICKEN_DISLOS);
4078 tmp = IWN_READ(sc, IWN_GPIO_CTL);
4079 IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_INIT);
4081 /* wait for clock stabilization */
4082 for (ntries = 0; ntries < 1000; ntries++) {
4083 if (IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_CLOCK)
4087 if (ntries == 1000) {
4088 device_printf(sc->sc_dev,
4089 "%s: timeout waiting for clock stabilization\n", __func__);
4096 iwn_hw_config(struct iwn_softc *sc)
4100 /* enable interrupts mitigation */
4101 IWN_WRITE(sc, IWN_INTR_MIT, 512 / 32);
4103 /* voodoo from the reference driver */
4104 tmp = pci_read_config(sc->sc_dev, PCIR_REVID,1);
4105 if ((tmp & 0x80) && (tmp & 0x7f) < 8) {
4106 /* enable "no snoop" field */
4107 tmp = pci_read_config(sc->sc_dev, 0xe8, 1);
4108 tmp &= ~IWN_DIS_NOSNOOP;
4109 /* clear device specific PCI configuration register 0x41 */
4110 pci_write_config(sc->sc_dev, 0xe8, tmp, 1);
4113 /* disable L1 entry to work around a hardware bug */
4114 tmp = pci_read_config(sc->sc_dev, 0xf0, 1);
4116 pci_write_config(sc->sc_dev, 0xf0, tmp, 1 );
4118 hw = IWN_READ(sc, IWN_HWCONFIG);
4119 IWN_WRITE(sc, IWN_HWCONFIG, hw | 0x310);
4122 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4123 iwn_mem_write(sc, IWN_MEM_POWER, tmp | IWN_POWER_RESET);
4125 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4126 iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~IWN_POWER_RESET);
4131 iwn_init_locked(struct iwn_softc *sc)
4133 struct ifnet *ifp = sc->sc_ifp;
4137 IWN_LOCK_ASSERT(sc);
4139 /* load the firmware */
4140 if (sc->fw_fp == NULL && (error = iwn_load_firmware(sc)) != 0) {
4141 device_printf(sc->sc_dev,
4142 "%s: could not load firmware, error %d\n", __func__, error);
4146 error = iwn_reset(sc);
4148 device_printf(sc->sc_dev,
4149 "%s: could not reset adapter, error %d\n", __func__, error);
4154 iwn_mem_read(sc, IWN_CLOCK_CTL);
4155 iwn_mem_write(sc, IWN_CLOCK_CTL, 0xa00);
4156 iwn_mem_read(sc, IWN_CLOCK_CTL);
4162 tmp = iwn_mem_read(sc, IWN_MEM_PCIDEV);
4163 iwn_mem_write(sc, IWN_MEM_PCIDEV, tmp | 0x800);
4167 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4168 iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~0x03000000);
4175 IWN_WRITE(sc, IWN_RX_CONFIG, 0);
4176 IWN_WRITE(sc, IWN_RX_WIDX, 0);
4177 /* Rx ring is aligned on a 256-byte boundary */
4178 IWN_WRITE(sc, IWN_RX_BASE, sc->rxq.desc_dma.paddr >> 8);
4179 /* shared area is aligned on a 16-byte boundary */
4180 IWN_WRITE(sc, IWN_RW_WIDX_PTR, (sc->shared_dma.paddr +
4181 offsetof(struct iwn_shared, closed_count)) >> 4);
4182 IWN_WRITE(sc, IWN_RX_CONFIG, 0x80601000);
4185 IWN_WRITE(sc, IWN_RX_WIDX, (IWN_RX_RING_COUNT - 1) & ~7);
4188 iwn_mem_write(sc, IWN_TX_ACTIVE, 0);
4190 /* set physical address of "keep warm" page */
4191 IWN_WRITE(sc, IWN_KW_BASE, sc->kw_dma.paddr >> 4);
4194 for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
4195 struct iwn_tx_ring *txq = &sc->txq[qid];
4196 IWN_WRITE(sc, IWN_TX_BASE(qid), txq->desc_dma.paddr >> 8);
4197 IWN_WRITE(sc, IWN_TX_CONFIG(qid), 0x80000008);
4201 /* clear "radio off" and "disable command" bits (reversed logic) */
4202 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4203 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_DISABLE_CMD);
4205 /* clear any pending interrupts */
4206 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4207 /* enable interrupts */
4208 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
4210 /* not sure why/if this is necessary... */
4211 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4212 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4214 /* check that the radio is not disabled by RF switch */
4215 if (!(IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_RF_ENABLED)) {
4216 device_printf(sc->sc_dev,
4217 "radio is disabled by hardware switch\n");
4221 error = iwn_transfer_firmware(sc);
4223 device_printf(sc->sc_dev,
4224 "%s: could not load firmware, error %d\n", __func__, error);
4228 /* firmware has notified us that it is alive.. */
4229 iwn_post_alive(sc); /* ..do post alive initialization */
4231 sc->rawtemp = sc->ucode_info.temp[3].chan20MHz;
4232 sc->temp = iwn_get_temperature(sc);
4233 DPRINTF(sc, IWN_DEBUG_RESET, "%s: temperature=%d\n",
4234 __func__, sc->temp);
4236 error = iwn_config(sc);
4238 device_printf(sc->sc_dev,
4239 "%s: could not configure device, error %d\n",
4244 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4245 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4251 struct iwn_softc *sc = arg;
4252 struct ifnet *ifp = sc->sc_ifp;
4253 struct ieee80211com *ic = ifp->if_l2com;
4256 iwn_init_locked(sc);
4259 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
4260 ieee80211_start_all(ic);
4264 iwn_stop_locked(struct iwn_softc *sc)
4266 struct ifnet *ifp = sc->sc_ifp;
4270 IWN_LOCK_ASSERT(sc);
4272 IWN_WRITE(sc, IWN_RESET, IWN_NEVO_RESET);
4274 sc->sc_tx_timer = 0;
4275 callout_stop(&sc->sc_timer_to);
4276 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4278 /* disable interrupts */
4279 IWN_WRITE(sc, IWN_MASK, 0);
4280 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4281 IWN_WRITE(sc, IWN_INTR_STATUS, 0xffffffff);
4283 /* Clear any commands left in the taskq command buffer */
4284 memset(sc->sc_cmd, 0, sizeof(sc->sc_cmd));
4286 /* reset all Tx rings */
4287 for (i = 0; i < IWN_NTXQUEUES; i++)
4288 iwn_reset_tx_ring(sc, &sc->txq[i]);
4291 iwn_reset_rx_ring(sc, &sc->rxq);
4294 iwn_mem_write(sc, IWN_MEM_CLOCK2, 0x200);
4298 iwn_stop_master(sc);
4300 tmp = IWN_READ(sc, IWN_RESET);
4301 IWN_WRITE(sc, IWN_RESET, tmp | IWN_SW_RESET);
4305 iwn_stop(struct iwn_softc *sc)
4308 iwn_stop_locked(sc);
4313 * Callback from net80211 to start a scan.
4316 iwn_scan_start(struct ieee80211com *ic)
4318 struct ifnet *ifp = ic->ic_ifp;
4319 struct iwn_softc *sc = ifp->if_softc;
4321 iwn_queue_cmd(sc, IWN_SCAN_START, 0, IWN_QUEUE_NORMAL);
4325 * Callback from net80211 to terminate a scan.
4328 iwn_scan_end(struct ieee80211com *ic)
4330 struct ifnet *ifp = ic->ic_ifp;
4331 struct iwn_softc *sc = ifp->if_softc;
4333 iwn_queue_cmd(sc, IWN_SCAN_STOP, 0, IWN_QUEUE_NORMAL);
4337 * Callback from net80211 to force a channel change.
4340 iwn_set_channel(struct ieee80211com *ic)
4342 struct ifnet *ifp = ic->ic_ifp;
4343 struct iwn_softc *sc = ifp->if_softc;
4344 const struct ieee80211_channel *c = ic->ic_curchan;
4346 if (c != sc->sc_curchan) {
4347 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq);
4348 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags);
4349 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq);
4350 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags);
4351 iwn_queue_cmd(sc, IWN_SET_CHAN, 0, IWN_QUEUE_NORMAL);
4356 * Callback from net80211 to start scanning of the current channel.
4359 iwn_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
4361 struct ieee80211vap *vap = ss->ss_vap;
4362 struct iwn_softc *sc = vap->iv_ic->ic_ifp->if_softc;
4364 iwn_queue_cmd(sc, IWN_SCAN_CURCHAN, 0, IWN_QUEUE_NORMAL);
4368 * Callback from net80211 to handle the minimum dwell time being met.
4369 * The intent is to terminate the scan but we just let the firmware
4370 * notify us when it's finished as we have no safe way to abort it.
4373 iwn_scan_mindwell(struct ieee80211_scan_state *ss)
4375 /* NB: don't try to abort scan; wait for firmware to finish */
4379 * Carry out work in the taskq context.
4382 iwn_ops(void *arg0, int pending)
4384 struct iwn_softc *sc = arg0;
4385 struct ifnet *ifp = sc->sc_ifp;
4386 struct ieee80211com *ic = ifp->if_l2com;
4387 struct ieee80211vap *vap;
4388 int cmd, arg, error;
4389 enum ieee80211_state nstate;
4393 cmd = sc->sc_cmd[sc->sc_cmd_cur];
4395 /* No more commands to process */
4399 if ((sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 &&
4400 cmd != IWN_RADIO_ENABLE ) {
4404 arg = sc->sc_cmd_arg[sc->sc_cmd_cur];
4405 sc->sc_cmd[sc->sc_cmd_cur] = 0; /* free the slot */
4406 sc->sc_cmd_cur = (sc->sc_cmd_cur + 1) % IWN_CMD_MAXOPS;
4409 IWN_LOCK(sc); /* NB: sync debug printfs on smp */
4410 DPRINTF(sc, IWN_DEBUG_OPS, "%s: %s (cmd 0x%x)\n",
4411 __func__, iwn_ops_str(cmd), cmd);
4413 vap = TAILQ_FIRST(&ic->ic_vaps); /* XXX */
4415 case IWN_SCAN_START:
4416 /* make the link LED blink while we're scanning */
4417 iwn_set_led(sc, IWN_LED_LINK, 20, 2);
4422 ieee80211_scan_next(vap);
4424 case IWN_SCAN_CURCHAN:
4425 error = iwn_scan(sc);
4428 ieee80211_cancel_scan(vap);
4434 error = iwn_config(sc);
4436 DPRINTF(sc, IWN_DEBUG_STATE,
4437 "%s: set chan failed, cancel scan\n",
4440 //XXX Handle failed scan correctly
4441 ieee80211_cancel_scan(vap);
4447 if (cmd == IWN_AUTH) {
4448 error = iwn_auth(sc);
4449 nstate = IEEE80211_S_AUTH;
4451 error = iwn_run(sc);
4452 nstate = IEEE80211_S_RUN;
4457 IWN_VAP(vap)->iv_newstate(vap, nstate, arg);
4458 if (vap->iv_newstate_cb != NULL)
4459 vap->iv_newstate_cb(vap, nstate, arg);
4460 IEEE80211_UNLOCK(ic);
4463 device_printf(sc->sc_dev,
4464 "%s: %s state change failed, error %d\n",
4465 __func__, ieee80211_state_name[nstate],
4473 ieee80211_notify_radio(ic, 1);
4475 case IWN_RADIO_ENABLE:
4476 KASSERT(sc->fw_fp != NULL,
4477 ("Fware Not Loaded, can't load from tq"));
4482 case IWN_RADIO_DISABLE:
4483 ieee80211_notify_radio(ic, 0);
4484 iwn_stop_locked(sc);
4492 * Queue a command for execution in the taskq thread.
4493 * This is needed as the net80211 callbacks do not allow
4494 * sleeping, since we need to sleep to confirm commands have
4495 * been processed by the firmware, we must defer execution to
4496 * a sleep enabled thread.
4499 iwn_queue_cmd(struct iwn_softc *sc, int cmd, int arg, int clear)
4503 sc->sc_cmd[0] = cmd;
4504 sc->sc_cmd_arg[0] = arg;
4506 sc->sc_cmd_next = 1;
4508 if (sc->sc_cmd[sc->sc_cmd_next] != 0) {
4510 DPRINTF(sc, IWN_DEBUG_ANY, "%s: command %d dropped\n",
4514 sc->sc_cmd[sc->sc_cmd_next] = cmd;
4515 sc->sc_cmd_arg[sc->sc_cmd_next] = arg;
4516 sc->sc_cmd_next = (sc->sc_cmd_next + 1) % IWN_CMD_MAXOPS;
4518 taskqueue_enqueue(sc->sc_tq, &sc->sc_ops_task);
4524 iwn_bpfattach(struct iwn_softc *sc)
4526 struct ifnet *ifp = sc->sc_ifp;
4528 bpfattach(ifp, DLT_IEEE802_11_RADIO,
4529 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap));
4531 sc->sc_rxtap_len = sizeof sc->sc_rxtap;
4532 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
4533 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWN_RX_RADIOTAP_PRESENT);
4535 sc->sc_txtap_len = sizeof sc->sc_txtap;
4536 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
4537 sc->sc_txtap.wt_ihdr.it_present = htole32(IWN_TX_RADIOTAP_PRESENT);
4541 iwn_sysctlattach(struct iwn_softc *sc)
4543 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
4544 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
4548 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
4549 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "control debugging printfs");
4555 iwn_ops_str(int cmd)
4558 case IWN_SCAN_START: return "SCAN_START";
4559 case IWN_SCAN_CURCHAN: return "SCAN_CURCHAN";
4560 case IWN_SCAN_STOP: return "SCAN_STOP";
4561 case IWN_SET_CHAN: return "SET_CHAN";
4562 case IWN_AUTH: return "AUTH";
4563 case IWN_SCAN_NEXT: return "SCAN_NEXT";
4564 case IWN_RUN: return "RUN";
4565 case IWN_RADIO_ENABLE: return "RADIO_ENABLE";
4566 case IWN_RADIO_DISABLE: return "RADIO_DISABLE";
4567 case IWN_REINIT: return "REINIT";
4569 return "UNKNOWN COMMAND";
4573 iwn_intr_str(uint8_t cmd)
4577 case IWN_UC_READY: return "UC_READY";
4578 case IWN_ADD_NODE_DONE: return "ADD_NODE_DONE";
4579 case IWN_TX_DONE: return "TX_DONE";
4580 case IWN_START_SCAN: return "START_SCAN";
4581 case IWN_STOP_SCAN: return "STOP_SCAN";
4582 case IWN_RX_STATISTICS: return "RX_STATS";
4583 case IWN_BEACON_STATISTICS: return "BEACON_STATS";
4584 case IWN_STATE_CHANGED: return "STATE_CHANGED";
4585 case IWN_BEACON_MISSED: return "BEACON_MISSED";
4586 case IWN_AMPDU_RX_START: return "AMPDU_RX_START";
4587 case IWN_AMPDU_RX_DONE: return "AMPDU_RX_DONE";
4588 case IWN_RX_DONE: return "RX_DONE";
4590 /* Command Notifications */
4591 case IWN_CMD_CONFIGURE: return "IWN_CMD_CONFIGURE";
4592 case IWN_CMD_ASSOCIATE: return "IWN_CMD_ASSOCIATE";
4593 case IWN_CMD_EDCA_PARAMS: return "IWN_CMD_EDCA_PARAMS";
4594 case IWN_CMD_TSF: return "IWN_CMD_TSF";
4595 case IWN_CMD_TX_LINK_QUALITY: return "IWN_CMD_TX_LINK_QUALITY";
4596 case IWN_CMD_SET_LED: return "IWN_CMD_SET_LED";
4597 case IWN_CMD_SET_POWER_MODE: return "IWN_CMD_SET_POWER_MODE";
4598 case IWN_CMD_SCAN: return "IWN_CMD_SCAN";
4599 case IWN_CMD_TXPOWER: return "IWN_CMD_TXPOWER";
4600 case IWN_CMD_BLUETOOTH: return "IWN_CMD_BLUETOOTH";
4601 case IWN_CMD_SET_CRITICAL_TEMP: return "IWN_CMD_SET_CRITICAL_TEMP";
4602 case IWN_SENSITIVITY: return "IWN_SENSITIVITY";
4603 case IWN_PHY_CALIB: return "IWN_PHY_CALIB";
4605 return "UNKNOWN INTR NOTIF/CMD";
4607 #endif /* IWN_DEBUG */
4609 static device_method_t iwn_methods[] = {
4610 /* Device interface */
4611 DEVMETHOD(device_probe, iwn_probe),
4612 DEVMETHOD(device_attach, iwn_attach),
4613 DEVMETHOD(device_detach, iwn_detach),
4614 DEVMETHOD(device_shutdown, iwn_shutdown),
4615 DEVMETHOD(device_suspend, iwn_suspend),
4616 DEVMETHOD(device_resume, iwn_resume),
4621 static driver_t iwn_driver = {
4624 sizeof (struct iwn_softc)
4626 static devclass_t iwn_devclass;
4627 DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, 0, 0);
4628 MODULE_DEPEND(iwn, pci, 1, 1, 1);
4629 MODULE_DEPEND(iwn, firmware, 1, 1, 1);
4630 MODULE_DEPEND(iwn, wlan, 1, 1, 1);
4631 MODULE_DEPEND(iwn, wlan_amrr, 1, 1, 1);