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 void iwn_notif_intr(struct iwn_softc *);
133 void iwn_intr(void *);
134 void iwn_read_eeprom(struct iwn_softc *,
135 uint8_t macaddr[IEEE80211_ADDR_LEN]);
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 *, struct ieee80211vap *);
169 int iwn_run(struct iwn_softc *, struct ieee80211vap *);
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_hwreset(void *, int);
186 static void iwn_radioon(void *, int);
187 static void iwn_radiooff(void *, int);
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_intr_str(uint8_t);
217 #define DPRINTF(sc, m, fmt, ...) do { (void) sc; } while (0)
226 static const struct iwn_ident iwn_ident_table [] = {
227 { 0x8086, 0x4229, "Intel(R) PRO/Wireless 4965BGN" },
228 { 0x8086, 0x422D, "Intel(R) PRO/Wireless 4965BGN" },
229 { 0x8086, 0x4230, "Intel(R) PRO/Wireless 4965BGN" },
230 { 0x8086, 0x4233, "Intel(R) PRO/Wireless 4965BGN" },
235 iwn_probe(device_t dev)
237 const struct iwn_ident *ident;
239 for (ident = iwn_ident_table; ident->name != NULL; ident++) {
240 if (pci_get_vendor(dev) == ident->vendor &&
241 pci_get_device(dev) == ident->device) {
242 device_set_desc(dev, ident->name);
250 iwn_attach(device_t dev)
252 struct iwn_softc *sc = (struct iwn_softc *)device_get_softc(dev);
253 struct ieee80211com *ic;
255 int i, error, result;
256 uint8_t macaddr[IEEE80211_ADDR_LEN];
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 if ((result = pci_msi_count(dev)) == 1 &&
286 pci_alloc_msi(dev, &result) == 0)
288 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
289 RF_ACTIVE | RF_SHAREABLE);
290 if (sc->irq == NULL) {
291 device_printf(dev, "could not allocate interrupt resource\n");
297 callout_init_mtx(&sc->sc_timer_to, &sc->sc_mtx, 0);
298 TASK_INIT(&sc->sc_reinit_task, 0, iwn_hwreset, sc );
299 TASK_INIT(&sc->sc_radioon_task, 0, iwn_radioon, sc );
300 TASK_INIT(&sc->sc_radiooff_task, 0, iwn_radiooff, sc );
303 * Put adapter into a known state.
305 error = iwn_reset(sc);
308 "could not reset adapter, error %d\n", error);
313 * Allocate DMA memory for firmware transfers.
315 error = iwn_alloc_fwmem(sc);
318 "could not allocate firmware memory, error %d\n", error);
323 * Allocate a "keep warm" page.
325 error = iwn_alloc_kw(sc);
328 "could not allocate keep-warm page, error %d\n", error);
333 * Allocate shared area (communication area).
335 error = iwn_alloc_shared(sc);
338 "could not allocate shared area, error %d\n", error);
345 for (i = 0; i < IWN_NTXQUEUES; i++) {
346 error = iwn_alloc_tx_ring(sc, &sc->txq[i], i);
349 "could not allocate Tx ring %d, error %d\n",
355 error = iwn_alloc_rx_ring(sc, &sc->rxq);
358 "could not allocate Rx ring, error %d\n", error);
362 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
364 device_printf(dev, "can not allocate ifnet structure\n");
370 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
371 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
373 /* set device capabilities */
375 IEEE80211_C_STA /* station mode supported */
376 | IEEE80211_C_MONITOR /* monitor mode supported */
377 | IEEE80211_C_TXPMGT /* tx power management */
378 | IEEE80211_C_SHSLOT /* short slot time supported */
380 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
382 | IEEE80211_C_BGSCAN /* background scanning */
383 | IEEE80211_C_IBSS /* ibss/adhoc mode */
385 | IEEE80211_C_WME /* WME */
388 /* XXX disable until HT channel setup works */
390 IEEE80211_HTCAP_SMPS_ENA /* SM PS mode enabled */
391 | IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width */
392 | IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */
393 | IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */
394 | IEEE80211_HTCAP_RXSTBC_2STREAM/* 1-2 spatial streams */
395 | IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */
396 /* s/w capabilities */
397 | IEEE80211_HTC_HT /* HT operation */
398 | IEEE80211_HTC_AMPDU /* tx A-MPDU */
399 | IEEE80211_HTC_AMSDU /* tx A-MSDU */
402 /* read supported channels and MAC address from EEPROM */
403 iwn_read_eeprom(sc, macaddr);
405 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
407 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
408 ifp->if_init = iwn_init;
409 ifp->if_ioctl = iwn_ioctl;
410 ifp->if_start = iwn_start;
411 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
412 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
413 IFQ_SET_READY(&ifp->if_snd);
415 ieee80211_ifattach(ic, macaddr);
416 ic->ic_vap_create = iwn_vap_create;
417 ic->ic_vap_delete = iwn_vap_delete;
418 ic->ic_raw_xmit = iwn_raw_xmit;
419 ic->ic_node_alloc = iwn_node_alloc;
420 ic->ic_newassoc = iwn_newassoc;
421 ic->ic_wme.wme_update = iwn_wme_update;
422 ic->ic_scan_start = iwn_scan_start;
423 ic->ic_scan_end = iwn_scan_end;
424 ic->ic_set_channel = iwn_set_channel;
425 ic->ic_scan_curchan = iwn_scan_curchan;
426 ic->ic_scan_mindwell = iwn_scan_mindwell;
428 ieee80211_radiotap_attach(ic,
429 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
430 IWN_TX_RADIOTAP_PRESENT,
431 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
432 IWN_RX_RADIOTAP_PRESENT);
434 iwn_sysctlattach(sc);
437 * Hook our interrupt after all initialization is complete.
439 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
440 NULL, iwn_intr, sc, &sc->sc_ih);
442 device_printf(dev, "could not set up interrupt, error %d\n", error);
446 ieee80211_announce(ic);
454 iwn_detach(device_t dev)
461 * Cleanup any device resources that were allocated
464 iwn_cleanup(device_t dev)
466 struct iwn_softc *sc = device_get_softc(dev);
467 struct ifnet *ifp = sc->sc_ifp;
468 struct ieee80211com *ic = ifp->if_l2com;
471 ieee80211_draintask(ic, &sc->sc_reinit_task);
472 ieee80211_draintask(ic, &sc->sc_radioon_task);
473 ieee80211_draintask(ic, &sc->sc_radiooff_task);
477 callout_drain(&sc->sc_timer_to);
478 ieee80211_ifdetach(ic);
481 iwn_unload_firmware(sc);
483 iwn_free_rx_ring(sc, &sc->rxq);
484 for (i = 0; i < IWN_NTXQUEUES; i++)
485 iwn_free_tx_ring(sc, &sc->txq[i]);
488 if (sc->irq != NULL) {
489 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
490 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
491 if (sc->irq_rid == 1)
492 pci_release_msi(dev);
495 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
498 IWN_LOCK_DESTROY(sc);
502 static struct ieee80211vap *
503 iwn_vap_create(struct ieee80211com *ic,
504 const char name[IFNAMSIZ], int unit, int opmode, int flags,
505 const uint8_t bssid[IEEE80211_ADDR_LEN],
506 const uint8_t mac[IEEE80211_ADDR_LEN])
509 struct ieee80211vap *vap;
511 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
513 ivp = (struct iwn_vap *) malloc(sizeof(struct iwn_vap),
514 M_80211_VAP, M_NOWAIT | M_ZERO);
518 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
519 vap->iv_bmissthreshold = 10; /* override default */
520 /* override with driver methods */
521 ivp->iv_newstate = vap->iv_newstate;
522 vap->iv_newstate = iwn_newstate;
524 ieee80211_amrr_init(&ivp->iv_amrr, vap,
525 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD,
526 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD,
530 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
531 ic->ic_opmode = opmode;
536 iwn_vap_delete(struct ieee80211vap *vap)
538 struct iwn_vap *ivp = IWN_VAP(vap);
540 ieee80211_amrr_cleanup(&ivp->iv_amrr);
541 ieee80211_vap_detach(vap);
542 free(ivp, M_80211_VAP);
546 iwn_shutdown(device_t dev)
548 struct iwn_softc *sc = device_get_softc(dev);
555 iwn_suspend(device_t dev)
557 struct iwn_softc *sc = device_get_softc(dev);
564 iwn_resume(device_t dev)
566 struct iwn_softc *sc = device_get_softc(dev);
567 struct ifnet *ifp = sc->sc_ifp;
569 pci_write_config(dev, 0x41, 0, 1);
571 if (ifp->if_flags & IFF_UP)
577 iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
581 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
582 *(bus_addr_t *)arg = segs[0].ds_addr;
586 iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma,
587 void **kvap, bus_size_t size, bus_size_t alignment, int flags)
589 int error, lalignment, i;
592 * FreeBSD can't guarrenty 16k alignment at the moment (11/2007) so
593 * we allocate an extra 12k with 4k alignement and walk through
594 * it trying to find where the alignment is. It's a nasty fix for
597 DPRINTF(sc, IWN_DEBUG_RESET,
598 "Size: %zd - alignment %zd\n", size, alignment);
599 if (alignment == 0x4000) {
602 DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
603 "Attempting to find a 16k boundary");
605 lalignment = alignment;
609 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), lalignment,
610 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
611 1, size, flags, NULL, NULL, &dma->tag);
613 device_printf(sc->sc_dev,
614 "%s: bus_dma_tag_create failed, error %d\n",
618 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
619 flags | BUS_DMA_ZERO, &dma->map);
621 device_printf(sc->sc_dev,
622 "%s: bus_dmamem_alloc failed, error %d\n",
626 if (alignment == 0x4000) {
627 for (i = 0; i < 3 && (((uintptr_t)dma->vaddr) & 0x3fff); i++) {
628 DPRINTF(sc, IWN_DEBUG_RESET, "%s\n",
629 "Memory Unaligned, shifting pointer by 4k");
633 if ((((uintptr_t)dma->vaddr ) & (alignment-1))) {
634 DPRINTF(sc, IWN_DEBUG_ANY,
635 "%s: failed to align memory, vaddr %p, align %zd\n",
636 __func__, dma->vaddr, alignment);
642 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr,
643 size, iwn_dma_map_addr, &dma->paddr, flags);
645 device_printf(sc->sc_dev,
646 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
654 iwn_dma_contig_free(dma);
659 iwn_dma_contig_free(struct iwn_dma_info *dma)
661 if (dma->tag != NULL) {
662 if (dma->map != NULL) {
663 if (dma->paddr == 0) {
664 bus_dmamap_sync(dma->tag, dma->map,
665 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
666 bus_dmamap_unload(dma->tag, dma->map);
668 bus_dmamem_free(dma->tag, &dma->vaddr, dma->map);
670 bus_dma_tag_destroy(dma->tag);
675 iwn_alloc_shared(struct iwn_softc *sc)
677 /* must be aligned on a 1KB boundary */
678 return iwn_dma_contig_alloc(sc, &sc->shared_dma,
679 (void **)&sc->shared, sizeof (struct iwn_shared), 1024,
684 iwn_free_shared(struct iwn_softc *sc)
686 iwn_dma_contig_free(&sc->shared_dma);
690 iwn_alloc_kw(struct iwn_softc *sc)
692 /* must be aligned on a 4k boundary */
693 return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL,
694 PAGE_SIZE, PAGE_SIZE, BUS_DMA_NOWAIT);
698 iwn_free_kw(struct iwn_softc *sc)
700 iwn_dma_contig_free(&sc->kw_dma);
704 iwn_alloc_fwmem(struct iwn_softc *sc)
706 /* allocate enough contiguous space to store text and data */
707 return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL,
708 IWN_FW_MAIN_TEXT_MAXSZ + IWN_FW_MAIN_DATA_MAXSZ, 16,
713 iwn_free_fwmem(struct iwn_softc *sc)
715 iwn_dma_contig_free(&sc->fw_dma);
719 iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
725 error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
726 (void **)&ring->desc, IWN_RX_RING_COUNT * sizeof (uint32_t),
727 IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
729 device_printf(sc->sc_dev,
730 "%s: could not allocate rx ring DMA memory, error %d\n",
735 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
736 BUS_SPACE_MAXADDR_32BIT,
737 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
738 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
740 device_printf(sc->sc_dev,
741 "%s: bus_dma_tag_create_failed, error %d\n",
749 for (i = 0; i < IWN_RX_RING_COUNT; i++) {
750 struct iwn_rx_data *data = &ring->data[i];
754 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
756 device_printf(sc->sc_dev,
757 "%s: bus_dmamap_create failed, error %d\n",
761 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
763 device_printf(sc->sc_dev,
764 "%s: could not allocate rx mbuf\n", __func__);
769 error = bus_dmamap_load(ring->data_dmat, data->map,
770 mtod(m, caddr_t), MJUMPAGESIZE,
771 iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
772 if (error != 0 && error != EFBIG) {
773 device_printf(sc->sc_dev,
774 "%s: bus_dmamap_load failed, error %d\n",
777 error = ENOMEM; /* XXX unique code */
780 bus_dmamap_sync(ring->data_dmat, data->map,
781 BUS_DMASYNC_PREWRITE);
784 /* Rx buffers are aligned on a 256-byte boundary */
785 ring->desc[i] = htole32(paddr >> 8);
787 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
788 BUS_DMASYNC_PREWRITE);
791 iwn_free_rx_ring(sc, ring);
796 iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
802 IWN_WRITE(sc, IWN_RX_CONFIG, 0);
803 for (ntries = 0; ntries < 100; ntries++) {
804 if (IWN_READ(sc, IWN_RX_STATUS) & IWN_RX_IDLE)
810 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n", "timeout resetting Rx ring");
818 iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
822 iwn_dma_contig_free(&ring->desc_dma);
824 for (i = 0; i < IWN_RX_RING_COUNT; i++)
825 if (ring->data[i].m != NULL)
826 m_freem(ring->data[i].m);
830 iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid)
839 size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_desc);
840 error = iwn_dma_contig_alloc(sc, &ring->desc_dma,
841 (void **)&ring->desc, size, IWN_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
843 device_printf(sc->sc_dev,
844 "%s: could not allocate tx ring DMA memory, error %d\n",
849 size = IWN_TX_RING_COUNT * sizeof(struct iwn_tx_cmd);
850 error = iwn_dma_contig_alloc(sc, &ring->cmd_dma,
851 (void **)&ring->cmd, size, 4, BUS_DMA_NOWAIT);
853 device_printf(sc->sc_dev,
854 "%s: could not allocate tx cmd DMA memory, error %d\n",
859 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
860 BUS_SPACE_MAXADDR_32BIT,
861 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWN_MAX_SCATTER - 1,
862 MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
864 device_printf(sc->sc_dev,
865 "%s: bus_dma_tag_create_failed, error %d\n",
870 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
871 struct iwn_tx_data *data = &ring->data[i];
873 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
875 device_printf(sc->sc_dev,
876 "%s: bus_dmamap_create failed, error %d\n",
880 bus_dmamap_sync(ring->data_dmat, data->map,
881 BUS_DMASYNC_PREWRITE);
885 iwn_free_tx_ring(sc, ring);
890 iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
897 IWN_WRITE(sc, IWN_TX_CONFIG(ring->qid), 0);
898 for (ntries = 0; ntries < 20; ntries++) {
899 tmp = IWN_READ(sc, IWN_TX_STATUS);
900 if ((tmp & IWN_TX_IDLE(ring->qid)) == IWN_TX_IDLE(ring->qid))
906 DPRINTF(sc, IWN_DEBUG_RESET,
907 "%s: timeout resetting Tx ring %d\n", __func__, ring->qid);
911 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
912 struct iwn_tx_data *data = &ring->data[i];
914 if (data->m != NULL) {
915 bus_dmamap_unload(ring->data_dmat, data->map);
926 iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
930 iwn_dma_contig_free(&ring->desc_dma);
931 iwn_dma_contig_free(&ring->cmd_dma);
933 if (ring->data != NULL) {
934 for (i = 0; i < IWN_TX_RING_COUNT; i++) {
935 struct iwn_tx_data *data = &ring->data[i];
937 if (data->m != NULL) {
938 bus_dmamap_unload(ring->data_dmat, data->map);
945 struct ieee80211_node *
946 iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
948 return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO);
952 iwn_newassoc(struct ieee80211_node *ni, int isnew)
954 struct ieee80211vap *vap = ni->ni_vap;
956 ieee80211_amrr_node_init(&IWN_VAP(vap)->iv_amrr,
957 &IWN_NODE(ni)->amn, ni);
961 iwn_media_change(struct ifnet *ifp)
963 int error = ieee80211_media_change(ifp);
964 /* NB: only the fixed rate can change and that doesn't need a reset */
965 return (error == ENETRESET ? 0 : error);
969 iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
971 struct iwn_vap *ivp = IWN_VAP(vap);
972 struct ieee80211com *ic = vap->iv_ic;
973 struct iwn_softc *sc = ic->ic_ifp->if_softc;
976 DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__,
977 ieee80211_state_name[vap->iv_state],
978 ieee80211_state_name[nstate]);
980 IEEE80211_UNLOCK(ic);
982 callout_stop(&sc->sc_timer_to);
984 if (nstate == IEEE80211_S_AUTH && vap->iv_state != IEEE80211_S_AUTH) {
985 /* !AUTH -> AUTH requires adapter config */
986 error = iwn_auth(sc, vap);
988 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
990 * !RUN -> RUN requires setting the association id
991 * which is done with a firmware cmd. We also defer
992 * starting the timers until that work is done.
994 error = iwn_run(sc, vap);
996 if (nstate == IEEE80211_S_RUN) {
998 * RUN -> RUN transition; just restart the timers.
1000 iwn_calib_reset(sc);
1004 return ivp->iv_newstate(vap, nstate, arg);
1008 * Grab exclusive access to NIC memory.
1011 iwn_mem_lock(struct iwn_softc *sc)
1016 tmp = IWN_READ(sc, IWN_GPIO_CTL);
1017 IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_MAC);
1019 /* spin until we actually get the lock */
1020 for (ntries = 0; ntries < 1000; ntries++) {
1021 if ((IWN_READ(sc, IWN_GPIO_CTL) &
1022 (IWN_GPIO_CLOCK | IWN_GPIO_SLEEP)) == IWN_GPIO_CLOCK)
1027 device_printf(sc->sc_dev,
1028 "%s: could not lock memory\n", __func__);
1032 * Release lock on NIC memory.
1035 iwn_mem_unlock(struct iwn_softc *sc)
1037 uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
1038 IWN_WRITE(sc, IWN_GPIO_CTL, tmp & ~IWN_GPIO_MAC);
1042 iwn_mem_read(struct iwn_softc *sc, uint32_t addr)
1044 IWN_WRITE(sc, IWN_READ_MEM_ADDR, IWN_MEM_4 | addr);
1045 return IWN_READ(sc, IWN_READ_MEM_DATA);
1049 iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data)
1051 IWN_WRITE(sc, IWN_WRITE_MEM_ADDR, IWN_MEM_4 | addr);
1052 IWN_WRITE(sc, IWN_WRITE_MEM_DATA, data);
1056 iwn_mem_write_region_4(struct iwn_softc *sc, uint32_t addr,
1057 const uint32_t *data, int wlen)
1059 for (; wlen > 0; wlen--, data++, addr += 4)
1060 iwn_mem_write(sc, addr, *data);
1064 iwn_eeprom_lock(struct iwn_softc *sc)
1069 tmp = IWN_READ(sc, IWN_HWCONFIG);
1070 IWN_WRITE(sc, IWN_HWCONFIG, tmp | IWN_HW_EEPROM_LOCKED);
1072 /* spin until we actually get the lock */
1073 for (ntries = 0; ntries < 100; ntries++) {
1074 if (IWN_READ(sc, IWN_HWCONFIG) & IWN_HW_EEPROM_LOCKED)
1082 iwn_eeprom_unlock(struct iwn_softc *sc)
1084 uint32_t tmp = IWN_READ(sc, IWN_HWCONFIG);
1085 IWN_WRITE(sc, IWN_HWCONFIG, tmp & ~IWN_HW_EEPROM_LOCKED);
1089 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC
1090 * instead of using the traditional bit-bang method.
1093 iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int len)
1095 uint8_t *out = data;
1100 for (; len > 0; len -= 2, addr++) {
1101 IWN_WRITE(sc, IWN_EEPROM_CTL, addr << 2);
1102 tmp = IWN_READ(sc, IWN_EEPROM_CTL);
1103 IWN_WRITE(sc, IWN_EEPROM_CTL, tmp & ~IWN_EEPROM_MSK );
1105 for (ntries = 0; ntries < 10; ntries++) {
1106 if ((val = IWN_READ(sc, IWN_EEPROM_CTL)) &
1112 device_printf(sc->sc_dev,"could not read EEPROM\n");
1125 * The firmware boot code is small and is intended to be copied directly into
1126 * the NIC internal memory.
1129 iwn_transfer_microcode(struct iwn_softc *sc, const uint8_t *ucode, int size)
1133 size /= sizeof (uint32_t);
1137 /* copy microcode image into NIC memory */
1138 iwn_mem_write_region_4(sc, IWN_MEM_UCODE_BASE,
1139 (const uint32_t *)ucode, size);
1141 iwn_mem_write(sc, IWN_MEM_UCODE_SRC, 0);
1142 iwn_mem_write(sc, IWN_MEM_UCODE_DST, IWN_FW_TEXT);
1143 iwn_mem_write(sc, IWN_MEM_UCODE_SIZE, size);
1146 iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_RUN);
1148 /* wait for transfer to complete */
1149 for (ntries = 0; ntries < 1000; ntries++) {
1150 if (!(iwn_mem_read(sc, IWN_MEM_UCODE_CTL) & IWN_UC_RUN))
1154 if (ntries == 1000) {
1156 device_printf(sc->sc_dev,
1157 "%s: could not load boot firmware\n", __func__);
1160 iwn_mem_write(sc, IWN_MEM_UCODE_CTL, IWN_UC_ENABLE);
1168 iwn_load_firmware(struct iwn_softc *sc)
1172 KASSERT(sc->fw_fp == NULL, ("firmware already loaded"));
1175 /* load firmware image from disk */
1176 sc->fw_fp = firmware_get("iwnfw");
1177 if (sc->fw_fp == NULL) {
1178 device_printf(sc->sc_dev,
1179 "%s: could not load firmare image \"iwnfw\"\n", __func__);
1188 iwn_transfer_firmware(struct iwn_softc *sc)
1190 struct iwn_dma_info *dma = &sc->fw_dma;
1191 const struct iwn_firmware_hdr *hdr;
1192 const uint8_t *init_text, *init_data, *main_text, *main_data;
1193 const uint8_t *boot_text;
1194 uint32_t init_textsz, init_datasz, main_textsz, main_datasz;
1195 uint32_t boot_textsz;
1197 const struct firmware *fp = sc->fw_fp;
1199 /* extract firmware header information */
1200 if (fp->datasize < sizeof (struct iwn_firmware_hdr)) {
1201 device_printf(sc->sc_dev,
1202 "%s: truncated firmware header: %zu bytes, expecting %zu\n",
1203 __func__, fp->datasize, sizeof (struct iwn_firmware_hdr));
1207 hdr = (const struct iwn_firmware_hdr *)fp->data;
1208 main_textsz = le32toh(hdr->main_textsz);
1209 main_datasz = le32toh(hdr->main_datasz);
1210 init_textsz = le32toh(hdr->init_textsz);
1211 init_datasz = le32toh(hdr->init_datasz);
1212 boot_textsz = le32toh(hdr->boot_textsz);
1214 /* sanity-check firmware segments sizes */
1215 if (main_textsz > IWN_FW_MAIN_TEXT_MAXSZ ||
1216 main_datasz > IWN_FW_MAIN_DATA_MAXSZ ||
1217 init_textsz > IWN_FW_INIT_TEXT_MAXSZ ||
1218 init_datasz > IWN_FW_INIT_DATA_MAXSZ ||
1219 boot_textsz > IWN_FW_BOOT_TEXT_MAXSZ ||
1220 (boot_textsz & 3) != 0) {
1221 device_printf(sc->sc_dev,
1222 "%s: invalid firmware header, main [%d,%d], init [%d,%d] "
1223 "boot %d\n", __func__, main_textsz, main_datasz,
1224 init_textsz, init_datasz, boot_textsz);
1229 /* check that all firmware segments are present */
1230 if (fp->datasize < sizeof (struct iwn_firmware_hdr) + main_textsz +
1231 main_datasz + init_textsz + init_datasz + boot_textsz) {
1232 device_printf(sc->sc_dev, "%s: firmware file too short: "
1233 "%zu bytes, main [%d, %d], init [%d,%d] boot %d\n",
1234 __func__, fp->datasize, main_textsz, main_datasz,
1235 init_textsz, init_datasz, boot_textsz);
1240 /* get pointers to firmware segments */
1241 main_text = (const uint8_t *)(hdr + 1);
1242 main_data = main_text + main_textsz;
1243 init_text = main_data + main_datasz;
1244 init_data = init_text + init_textsz;
1245 boot_text = init_data + init_datasz;
1247 /* copy initialization images into pre-allocated DMA-safe memory */
1248 memcpy(dma->vaddr, init_data, init_datasz);
1249 memcpy(dma->vaddr + IWN_FW_INIT_DATA_MAXSZ, init_text, init_textsz);
1251 /* tell adapter where to find initialization images */
1253 iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
1254 iwn_mem_write(sc, IWN_MEM_DATA_SIZE, init_datasz);
1255 iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
1256 (dma->paddr + IWN_FW_INIT_DATA_MAXSZ) >> 4);
1257 iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, init_textsz);
1260 /* load firmware boot code */
1261 error = iwn_transfer_microcode(sc, boot_text, boot_textsz);
1263 device_printf(sc->sc_dev,
1264 "%s: could not load boot firmware, error %d\n",
1269 /* now press "execute" ;-) */
1270 IWN_WRITE(sc, IWN_RESET, 0);
1272 /* wait at most one second for first alive notification */
1273 error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
1275 /* this isn't what was supposed to happen.. */
1276 device_printf(sc->sc_dev,
1277 "%s: timeout waiting for first alive notice, error %d\n",
1282 /* copy runtime images into pre-allocated DMA-safe memory */
1283 memcpy(dma->vaddr, main_data, main_datasz);
1284 memcpy(dma->vaddr + IWN_FW_MAIN_DATA_MAXSZ, main_text, main_textsz);
1286 /* tell adapter where to find runtime images */
1288 iwn_mem_write(sc, IWN_MEM_DATA_BASE, dma->paddr >> 4);
1289 iwn_mem_write(sc, IWN_MEM_DATA_SIZE, main_datasz);
1290 iwn_mem_write(sc, IWN_MEM_TEXT_BASE,
1291 (dma->paddr + IWN_FW_MAIN_DATA_MAXSZ) >> 4);
1292 iwn_mem_write(sc, IWN_MEM_TEXT_SIZE, IWN_FW_UPDATED | main_textsz);
1295 /* wait at most one second for second alive notification */
1296 error = msleep(sc, &sc->sc_mtx, PCATCH, "iwninit", hz);
1298 /* this isn't what was supposed to happen.. */
1299 device_printf(sc->sc_dev,
1300 "%s: timeout waiting for second alive notice, error %d\n",
1310 iwn_unload_firmware(struct iwn_softc *sc)
1312 if (sc->fw_fp != NULL) {
1313 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
1319 iwn_timer_timeout(void *arg)
1321 struct iwn_softc *sc = arg;
1323 IWN_LOCK_ASSERT(sc);
1325 if (sc->calib_cnt && --sc->calib_cnt == 0) {
1326 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n",
1327 "send statistics request");
1328 (void) iwn_cmd(sc, IWN_CMD_GET_STATISTICS, NULL, 0, 1);
1329 sc->calib_cnt = 60; /* do calibration every 60s */
1331 iwn_watchdog(sc); /* NB: piggyback tx watchdog */
1332 callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
1336 iwn_calib_reset(struct iwn_softc *sc)
1338 callout_reset(&sc->sc_timer_to, hz, iwn_timer_timeout, sc);
1339 sc->calib_cnt = 60; /* do calibration every 60s */
1343 iwn_ampdu_rx_start(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1345 struct iwn_rx_stat *stat;
1347 DPRINTF(sc, IWN_DEBUG_RECV, "%s\n", "received AMPDU stats");
1348 /* save Rx statistics, they will be used on IWN_AMPDU_RX_DONE */
1349 stat = (struct iwn_rx_stat *)(desc + 1);
1350 memcpy(&sc->last_rx_stat, stat, sizeof (*stat));
1351 sc->last_rx_valid = 1;
1355 maprate(int iwnrate)
1362 case 110: return 22;
1364 case 0xd: return 12;
1365 case 0xf: return 18;
1366 case 0x5: return 24;
1367 case 0x7: return 36;
1368 case 0x9: return 48;
1369 case 0xb: return 72;
1370 case 0x1: return 96;
1371 case 0x3: return 108;
1374 /* unknown rate: should not happen */
1379 iwn_rx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc,
1380 struct iwn_rx_data *data)
1382 struct ifnet *ifp = sc->sc_ifp;
1383 struct ieee80211com *ic = ifp->if_l2com;
1384 struct iwn_rx_ring *ring = &sc->rxq;
1385 struct ieee80211_frame *wh;
1386 struct ieee80211_node *ni;
1387 struct mbuf *m, *mnew;
1388 struct iwn_rx_stat *stat;
1395 if (desc->type == IWN_AMPDU_RX_DONE) {
1396 /* check for prior AMPDU_RX_START */
1397 if (!sc->last_rx_valid) {
1398 DPRINTF(sc, IWN_DEBUG_ANY,
1399 "%s: missing AMPDU_RX_START\n", __func__);
1403 sc->last_rx_valid = 0;
1404 stat = &sc->last_rx_stat;
1406 stat = (struct iwn_rx_stat *)(desc + 1);
1408 if (stat->cfg_phy_len > IWN_STAT_MAXLEN) {
1409 device_printf(sc->sc_dev,
1410 "%s: invalid rx statistic header, len %d\n",
1411 __func__, stat->cfg_phy_len);
1415 if (desc->type == IWN_AMPDU_RX_DONE) {
1416 struct iwn_rx_ampdu *ampdu = (struct iwn_rx_ampdu *)(desc + 1);
1417 head = (caddr_t)(ampdu + 1);
1418 len = le16toh(ampdu->len);
1420 head = (caddr_t)(stat + 1) + stat->cfg_phy_len;
1421 len = le16toh(stat->len);
1424 /* discard Rx frames with bad CRC early */
1425 tail = (uint32_t *)(head + len);
1426 if ((le32toh(*tail) & IWN_RX_NOERROR) != IWN_RX_NOERROR) {
1427 DPRINTF(sc, IWN_DEBUG_RECV, "%s: rx flags error %x\n",
1428 __func__, le32toh(*tail));
1432 if (len < sizeof (struct ieee80211_frame)) {
1433 DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
1439 /* XXX don't need mbuf, just dma buffer */
1440 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1442 DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n",
1447 error = bus_dmamap_load(ring->data_dmat, data->map,
1448 mtod(mnew, caddr_t), MJUMPAGESIZE,
1449 iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1450 if (error != 0 && error != EFBIG) {
1451 device_printf(sc->sc_dev,
1452 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1457 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1459 /* finalize mbuf and swap in new one */
1461 m->m_pkthdr.rcvif = ifp;
1463 m->m_pkthdr.len = m->m_len = len;
1466 /* update Rx descriptor */
1467 ring->desc[ring->cur] = htole32(paddr >> 8);
1469 rssi = iwn_get_rssi(sc, stat);
1471 /* grab a reference to the source node */
1472 wh = mtod(m, struct ieee80211_frame *);
1473 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
1475 nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
1476 (ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
1478 if (ieee80211_radiotap_active(ic)) {
1479 struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap;
1481 tap->wr_tsft = htole64(stat->tstamp);
1483 if (stat->flags & htole16(IWN_CONFIG_SHPREAMBLE))
1484 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
1485 tap->wr_rate = maprate(stat->rate);
1486 tap->wr_dbm_antsignal = rssi;
1487 tap->wr_dbm_antnoise = nf;
1492 /* send the frame to the 802.11 layer */
1494 (void) ieee80211_input(ni, m, rssi - nf, nf);
1495 ieee80211_free_node(ni);
1497 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1503 iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1505 struct ifnet *ifp = sc->sc_ifp;
1506 struct ieee80211com *ic = ifp->if_l2com;
1507 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1508 struct iwn_calib_state *calib = &sc->calib;
1509 struct iwn_stats *stats = (struct iwn_stats *)(desc + 1);
1511 /* beacon stats are meaningful only when associated and not scanning */
1512 if (vap->iv_state != IEEE80211_S_RUN ||
1513 (ic->ic_flags & IEEE80211_F_SCAN))
1516 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: cmd %d\n", __func__, desc->type);
1517 iwn_calib_reset(sc);
1519 /* test if temperature has changed */
1520 if (stats->general.temp != sc->rawtemp) {
1523 sc->rawtemp = stats->general.temp;
1524 temp = iwn_get_temperature(sc);
1525 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n",
1528 /* update Tx power if need be */
1529 iwn_power_calibration(sc, temp);
1532 if (desc->type != IWN_BEACON_STATISTICS)
1533 return; /* reply to a statistics request */
1535 sc->noise = iwn_get_noise(&stats->rx.general);
1536 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise);
1538 /* test that RSSI and noise are present in stats report */
1539 if (stats->rx.general.flags != htole32(1)) {
1540 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n",
1541 "received statistics without RSSI");
1545 if (calib->state == IWN_CALIB_STATE_ASSOC)
1546 iwn_compute_differential_gain(sc, &stats->rx.general);
1547 else if (calib->state == IWN_CALIB_STATE_RUN)
1548 iwn_tune_sensitivity(sc, &stats->rx);
1552 iwn_tx_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1554 struct ifnet *ifp = sc->sc_ifp;
1555 struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf];
1556 struct iwn_tx_data *data = &ring->data[desc->idx];
1557 struct iwn_tx_stat *stat = (struct iwn_tx_stat *)(desc + 1);
1558 struct iwn_node *wn = IWN_NODE(data->ni);
1560 struct ieee80211_node *ni;
1563 KASSERT(data->ni != NULL, ("no node"));
1565 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: "
1566 "qid %d idx %d retries %d nkill %d rate %x duration %d status %x\n",
1567 __func__, desc->qid, desc->idx, stat->ntries,
1568 stat->nkill, stat->rate, le16toh(stat->duration),
1569 le32toh(stat->status));
1572 * Update rate control statistics for the node.
1574 status = le32toh(stat->status) & 0xff;
1575 if (status & 0x80) {
1576 DPRINTF(sc, IWN_DEBUG_ANY, "%s: status 0x%x\n",
1577 __func__, le32toh(stat->status));
1579 ieee80211_amrr_tx_complete(&wn->amn,
1580 IEEE80211_AMRR_FAILURE, stat->ntries);
1582 ieee80211_amrr_tx_complete(&wn->amn,
1583 IEEE80211_AMRR_SUCCESS, stat->ntries);
1586 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
1587 bus_dmamap_unload(ring->data_dmat, data->map);
1589 m = data->m, data->m = NULL;
1590 ni = data->ni, data->ni = NULL;
1592 if (m->m_flags & M_TXCB) {
1594 * Channels marked for "radar" require traffic to be received
1595 * to unlock before we can transmit. Until traffic is seen
1596 * any attempt to transmit is returned immediately with status
1597 * set to IWN_TX_FAIL_TX_LOCKED. Unfortunately this can easily
1598 * happen on first authenticate after scanning. To workaround
1599 * this we ignore a failure of this sort in AUTH state so the
1600 * 802.11 layer will fall back to using a timeout to wait for
1601 * the AUTH reply. This allows the firmware time to see
1602 * traffic so a subsequent retry of AUTH succeeds. It's
1603 * unclear why the firmware does not maintain state for
1604 * channels recently visited as this would allow immediate
1605 * use of the channel after a scan (where we see traffic).
1607 if (status == IWN_TX_FAIL_TX_LOCKED &&
1608 ni->ni_vap->iv_state == IEEE80211_S_AUTH)
1609 ieee80211_process_callback(ni, m, 0);
1611 ieee80211_process_callback(ni, m,
1612 (status & IWN_TX_FAIL) != 0);
1615 ieee80211_free_node(ni);
1619 sc->sc_tx_timer = 0;
1620 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1621 iwn_start_locked(ifp);
1625 iwn_cmd_intr(struct iwn_softc *sc, struct iwn_rx_desc *desc)
1627 struct iwn_tx_ring *ring = &sc->txq[4];
1628 struct iwn_tx_data *data;
1630 if ((desc->qid & 0xf) != 4)
1631 return; /* not a command ack */
1633 data = &ring->data[desc->idx];
1635 /* if the command was mapped in a mbuf, free it */
1636 if (data->m != NULL) {
1637 bus_dmamap_unload(ring->data_dmat, data->map);
1642 wakeup(&ring->cmd[desc->idx]);
1646 iwn_notif_intr(struct iwn_softc *sc)
1648 struct ifnet *ifp = sc->sc_ifp;
1649 struct ieee80211com *ic = ifp->if_l2com;
1650 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1653 hw = le16toh(sc->shared->closed_count) & 0xfff;
1654 while (sc->rxq.cur != hw) {
1655 struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur];
1656 struct iwn_rx_desc *desc = (void *)data->m->m_ext.ext_buf;
1658 DPRINTF(sc, IWN_DEBUG_RECV,
1659 "%s: qid %x idx %d flags %x type %d(%s) len %d\n",
1660 __func__, desc->qid, desc->idx, desc->flags,
1661 desc->type, iwn_intr_str(desc->type),
1662 le16toh(desc->len));
1664 if (!(desc->qid & 0x80)) /* reply to a command */
1665 iwn_cmd_intr(sc, desc);
1667 switch (desc->type) {
1669 case IWN_AMPDU_RX_DONE:
1670 iwn_rx_intr(sc, desc, data);
1673 case IWN_AMPDU_RX_START:
1674 iwn_ampdu_rx_start(sc, desc);
1678 /* a 802.11 frame has been transmitted */
1679 iwn_tx_intr(sc, desc);
1682 case IWN_RX_STATISTICS:
1683 case IWN_BEACON_STATISTICS:
1684 iwn_rx_statistics(sc, desc);
1687 case IWN_BEACON_MISSED: {
1688 struct iwn_beacon_missed *miss =
1689 (struct iwn_beacon_missed *)(desc + 1);
1690 int misses = le32toh(miss->consecutive);
1692 /* XXX not sure why we're notified w/ zero */
1695 DPRINTF(sc, IWN_DEBUG_STATE,
1696 "%s: beacons missed %d/%d\n", __func__,
1697 misses, le32toh(miss->total));
1699 * If more than 5 consecutive beacons are missed,
1700 * reinitialize the sensitivity state machine.
1702 if (vap->iv_state == IEEE80211_S_RUN && misses > 5)
1703 (void) iwn_init_sensitivity(sc);
1704 if (misses >= vap->iv_bmissthreshold)
1705 ieee80211_beacon_miss(ic);
1708 case IWN_UC_READY: {
1709 struct iwn_ucode_info *uc =
1710 (struct iwn_ucode_info *)(desc + 1);
1712 /* the microcontroller is ready */
1713 DPRINTF(sc, IWN_DEBUG_RESET,
1714 "microcode alive notification version=%d.%d "
1715 "subtype=%x alive=%x\n", uc->major, uc->minor,
1716 uc->subtype, le32toh(uc->valid));
1718 if (le32toh(uc->valid) != 1) {
1719 device_printf(sc->sc_dev,
1720 "microcontroller initialization failed");
1723 if (uc->subtype == IWN_UCODE_INIT) {
1724 /* save microcontroller's report */
1725 memcpy(&sc->ucode_info, uc, sizeof (*uc));
1729 case IWN_STATE_CHANGED: {
1730 uint32_t *status = (uint32_t *)(desc + 1);
1733 * State change allows hardware switch change to be
1734 * noted. However, we handle this in iwn_intr as we
1735 * get both the enable/disble intr.
1737 DPRINTF(sc, IWN_DEBUG_INTR, "state changed to %x\n",
1741 case IWN_START_SCAN: {
1742 struct iwn_start_scan *scan =
1743 (struct iwn_start_scan *)(desc + 1);
1745 DPRINTF(sc, IWN_DEBUG_ANY,
1746 "%s: scanning channel %d status %x\n",
1747 __func__, scan->chan, le32toh(scan->status));
1750 case IWN_STOP_SCAN: {
1751 struct iwn_stop_scan *scan =
1752 (struct iwn_stop_scan *)(desc + 1);
1754 DPRINTF(sc, IWN_DEBUG_STATE,
1755 "scan finished nchan=%d status=%d chan=%d\n",
1756 scan->nchan, scan->status, scan->chan);
1758 ieee80211_scan_next(vap);
1762 sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT;
1765 /* tell the firmware what we have processed */
1766 hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1;
1767 IWN_WRITE(sc, IWN_RX_WIDX, hw & ~7);
1771 iwn_rftoggle_intr(struct iwn_softc *sc)
1773 struct ifnet *ifp = sc->sc_ifp;
1774 struct ieee80211com *ic = ifp->if_l2com;
1775 uint32_t tmp = IWN_READ(sc, IWN_GPIO_CTL);
1777 IWN_LOCK_ASSERT(sc);
1779 device_printf(sc->sc_dev, "RF switch: radio %s\n",
1780 (tmp & IWN_GPIO_RF_ENABLED) ? "enabled" : "disabled");
1781 if (tmp & IWN_GPIO_RF_ENABLED)
1782 ieee80211_runtask(ic, &sc->sc_radioon_task);
1784 ieee80211_runtask(ic, &sc->sc_radiooff_task);
1788 iwn_error_intr(struct iwn_softc *sc, uint32_t r1, uint32_t r2)
1790 struct ifnet *ifp = sc->sc_ifp;
1791 struct ieee80211com *ic = ifp->if_l2com;
1792 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1794 IWN_LOCK_ASSERT(sc);
1796 device_printf(sc->sc_dev, "error, INTR=%b STATUS=0x%x\n",
1797 r1, IWN_INTR_BITS, r2);
1799 ieee80211_cancel_scan(vap);
1800 ieee80211_runtask(ic, &sc->sc_reinit_task);
1806 struct iwn_softc *sc = arg;
1811 /* disable interrupts */
1812 IWN_WRITE(sc, IWN_MASK, 0);
1814 r1 = IWN_READ(sc, IWN_INTR);
1815 r2 = IWN_READ(sc, IWN_INTR_STATUS);
1817 if (r1 == 0 && r2 == 0) {
1818 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
1819 goto done; /* not for us */
1822 if (r1 == 0xffffffff)
1823 goto done; /* hardware gone */
1825 /* ack interrupts */
1826 IWN_WRITE(sc, IWN_INTR, r1);
1827 IWN_WRITE(sc, IWN_INTR_STATUS, r2);
1829 DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=%x reg2=%x\n", r1, r2);
1831 if (r1 & IWN_RF_TOGGLED)
1832 iwn_rftoggle_intr(sc);
1833 if (r1 & IWN_CT_REACHED)
1834 device_printf(sc->sc_dev, "critical temperature reached!\n");
1835 if (r1 & (IWN_SW_ERROR | IWN_HW_ERROR)) {
1836 iwn_error_intr(sc, r1, r2);
1839 if ((r1 & (IWN_RX_INTR | IWN_SW_RX_INTR)) || (r2 & IWN_RX_STATUS_INTR))
1841 if (r1 & IWN_ALIVE_INTR)
1844 /* re-enable interrupts */
1845 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
1851 iwn_plcp_signal(int rate)
1854 /* CCK rates (returned values are device-dependent) */
1858 case 22: return 110;
1860 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1861 /* R1-R4, (u)ral is R4-R1 */
1862 case 12: return 0xd;
1863 case 18: return 0xf;
1864 case 24: return 0x5;
1865 case 36: return 0x7;
1866 case 48: return 0x9;
1867 case 72: return 0xb;
1868 case 96: return 0x1;
1869 case 108: return 0x3;
1870 case 120: return 0x3;
1872 /* unknown rate (should not get there) */
1876 /* determine if a given rate is CCK or OFDM */
1877 #define IWN_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1880 iwn_tx_data(struct iwn_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1881 struct iwn_tx_ring *ring)
1883 struct ieee80211vap *vap = ni->ni_vap;
1884 struct ieee80211com *ic = ni->ni_ic;
1885 struct ifnet *ifp = sc->sc_ifp;
1886 const struct ieee80211_txparam *tp;
1887 struct iwn_tx_desc *desc;
1888 struct iwn_tx_data *data;
1889 struct iwn_tx_cmd *cmd;
1890 struct iwn_cmd_data *tx;
1891 struct ieee80211_frame *wh;
1892 struct ieee80211_key *k;
1899 int rate, error, pad, nsegs, i, ismcast, id;
1900 bus_dma_segment_t segs[IWN_MAX_SCATTER];
1902 IWN_LOCK_ASSERT(sc);
1904 wh = mtod(m0, struct ieee80211_frame *);
1905 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
1906 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1907 hdrlen = ieee80211_anyhdrsize(wh);
1909 /* pick a tx rate */
1911 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
1912 if (type == IEEE80211_FC0_TYPE_MGT)
1913 rate = tp->mgmtrate;
1915 rate = tp->mcastrate;
1916 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
1917 rate = tp->ucastrate;
1919 (void) ieee80211_amrr_choose(ni, &IWN_NODE(ni)->amn);
1920 rate = ni->ni_txrate;
1923 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1924 k = ieee80211_crypto_encap(ni, m0);
1929 /* packet header may have moved, reset our local pointer */
1930 wh = mtod(m0, struct ieee80211_frame *);
1934 if (ieee80211_radiotap_active_vap(vap)) {
1935 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
1938 tap->wt_rate = rate;
1940 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
1942 ieee80211_radiotap_tx(vap, m0);
1945 flags = IWN_TX_AUTO_SEQ;
1948 flags |= IWN_TX_NEED_ACK;
1950 if (ismcast || type != IEEE80211_FC0_TYPE_DATA)
1951 id = IWN_ID_BROADCAST;
1955 /* check if RTS/CTS or CTS-to-self protection must be used */
1957 /* multicast frames are not sent at OFDM rates in 802.11b/g */
1958 if (m0->m_pkthdr.len+IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
1959 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
1960 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
1961 IWN_RATE_IS_OFDM(rate)) {
1962 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
1963 flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
1964 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
1965 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
1969 if (type == IEEE80211_FC0_TYPE_MGT) {
1970 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1972 /* tell h/w to set timestamp in probe responses */
1973 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1974 flags |= IWN_TX_INSERT_TSTAMP;
1976 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
1977 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
1978 timeout = htole16(3);
1980 timeout = htole16(2);
1982 timeout = htole16(0);
1985 /* first segment's length must be a multiple of 4 */
1986 flags |= IWN_TX_NEED_PADDING;
1987 pad = 4 - (hdrlen & 3);
1991 desc = &ring->desc[ring->cur];
1992 data = &ring->data[ring->cur];
1994 cmd = &ring->cmd[ring->cur];
1995 cmd->code = IWN_CMD_TX_DATA;
1997 cmd->qid = ring->qid;
1998 cmd->idx = ring->cur;
2000 tx = (struct iwn_cmd_data *)cmd->data;
2001 /* NB: no need to bzero tx, all fields are reinitialized here */
2003 tx->flags = htole32(flags);
2004 tx->len = htole16(m0->m_pkthdr.len);
2005 tx->rate = iwn_plcp_signal(rate);
2006 tx->rts_ntries = 60; /* XXX? */
2007 tx->data_ntries = 15; /* XXX? */
2008 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
2009 tx->timeout = timeout;
2016 /* XXX alternate between Ant A and Ant B ? */
2017 tx->rflags = IWN_RFLAG_ANT_B;
2018 if (tx->id == IWN_ID_BROADCAST) {
2019 tx->ridx = IWN_MAX_TX_RETRIES - 1;
2020 if (!IWN_RATE_IS_OFDM(rate))
2021 tx->rflags |= IWN_RFLAG_CCK;
2024 /* tell adapter to ignore rflags */
2025 tx->flags |= htole32(IWN_TX_USE_NODE_RATE);
2028 /* copy and trim IEEE802.11 header */
2029 memcpy((uint8_t *)(tx + 1), wh, hdrlen);
2032 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2033 &nsegs, BUS_DMA_NOWAIT);
2035 if (error == EFBIG) {
2036 /* too many fragments, linearize */
2037 mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
2040 device_printf(sc->sc_dev,
2041 "%s: could not defrag mbuf\n", __func__);
2046 error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
2047 data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
2051 device_printf(sc->sc_dev,
2052 "%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
2062 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
2063 __func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
2065 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2066 tx->loaddr = htole32(paddr + 4 +
2067 offsetof(struct iwn_cmd_data, ntries));
2068 tx->hiaddr = 0; /* limit to 32-bit physical addresses */
2070 /* first scatter/gather segment is used by the tx data command */
2071 IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
2072 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
2073 for (i = 1; i <= nsegs; i++) {
2074 IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
2075 segs[i - 1].ds_len);
2077 sc->shared->len[ring->qid][ring->cur] =
2078 htole16(hdrlen + m0->m_pkthdr.len + 8);
2080 if (ring->cur < IWN_TX_WINDOW)
2081 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2082 htole16(hdrlen + m0->m_pkthdr.len + 8);
2087 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2088 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2091 sc->sc_tx_timer = 5;
2097 iwn_start(struct ifnet *ifp)
2099 struct iwn_softc *sc = ifp->if_softc;
2102 iwn_start_locked(ifp);
2107 iwn_start_locked(struct ifnet *ifp)
2109 struct iwn_softc *sc = ifp->if_softc;
2110 struct ieee80211_node *ni;
2111 struct iwn_tx_ring *txq;
2115 IWN_LOCK_ASSERT(sc);
2118 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
2121 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
2122 pri = M_WME_GETAC(m);
2123 txq = &sc->txq[pri];
2124 if (txq->queued >= IWN_TX_RING_COUNT - 8) {
2126 /* ring is nearly full, stop flow */
2127 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2129 if (iwn_tx_data(sc, m, ni, txq) != 0) {
2131 ieee80211_free_node(ni);
2138 iwn_tx_handoff(struct iwn_softc *sc,
2139 struct iwn_tx_ring *ring,
2140 struct iwn_tx_cmd *cmd,
2141 struct iwn_cmd_data *tx,
2142 struct ieee80211_node *ni,
2143 struct mbuf *m0, u_int hdrlen, int pad)
2145 struct ifnet *ifp = sc->sc_ifp;
2146 struct iwn_tx_desc *desc;
2147 struct iwn_tx_data *data;
2150 int error, nsegs, i;
2151 bus_dma_segment_t segs[IWN_MAX_SCATTER];
2153 /* copy and trim IEEE802.11 header */
2154 memcpy((uint8_t *)(tx + 1), mtod(m0, uint8_t *), hdrlen);
2157 desc = &ring->desc[ring->cur];
2158 data = &ring->data[ring->cur];
2160 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
2161 &nsegs, BUS_DMA_NOWAIT);
2163 if (error == EFBIG) {
2164 /* too many fragments, linearize */
2165 mnew = m_collapse(m0, M_DONTWAIT, IWN_MAX_SCATTER);
2168 device_printf(sc->sc_dev,
2169 "%s: could not defrag mbuf\n", __func__);
2174 error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
2175 data->map, m0, segs, &nsegs, BUS_DMA_NOWAIT);
2179 device_printf(sc->sc_dev,
2180 "%s: bus_dmamap_load_mbuf_sg failed, error %d\n",
2190 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n",
2191 __func__, ring->qid, ring->cur, m0->m_pkthdr.len, nsegs);
2193 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2194 tx->loaddr = htole32(paddr + 4 +
2195 offsetof(struct iwn_cmd_data, ntries));
2196 tx->hiaddr = 0; /* limit to 32-bit physical addresses */
2198 /* first scatter/gather segment is used by the tx data command */
2199 IWN_SET_DESC_NSEGS(desc, 1 + nsegs);
2200 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + sizeof (*tx) + hdrlen + pad);
2201 for (i = 1; i <= nsegs; i++) {
2202 IWN_SET_DESC_SEG(desc, i, segs[i - 1].ds_addr,
2203 segs[i - 1].ds_len);
2205 sc->shared->len[ring->qid][ring->cur] =
2206 htole16(hdrlen + m0->m_pkthdr.len + 8);
2208 if (ring->cur < IWN_TX_WINDOW)
2209 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2210 htole16(hdrlen + m0->m_pkthdr.len + 8);
2215 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2216 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2219 sc->sc_tx_timer = 5;
2225 iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m0,
2226 struct ieee80211_node *ni, struct iwn_tx_ring *ring,
2227 const struct ieee80211_bpf_params *params)
2229 struct ieee80211vap *vap = ni->ni_vap;
2230 struct ieee80211com *ic = ni->ni_ic;
2231 struct iwn_tx_cmd *cmd;
2232 struct iwn_cmd_data *tx;
2233 struct ieee80211_frame *wh;
2235 uint8_t type, subtype;
2239 IWN_LOCK_ASSERT(sc);
2241 wh = mtod(m0, struct ieee80211_frame *);
2242 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2243 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
2244 hdrlen = ieee80211_anyhdrsize(wh);
2246 flags = IWN_TX_AUTO_SEQ;
2247 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0)
2248 flags |= IWN_TX_NEED_ACK;
2249 if (params->ibp_flags & IEEE80211_BPF_RTS)
2250 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP;
2251 if (params->ibp_flags & IEEE80211_BPF_CTS)
2252 flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP;
2253 if (type == IEEE80211_FC0_TYPE_MGT &&
2254 subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) {
2255 /* tell h/w to set timestamp in probe responses */
2256 flags |= IWN_TX_INSERT_TSTAMP;
2259 /* first segment's length must be a multiple of 4 */
2260 flags |= IWN_TX_NEED_PADDING;
2261 pad = 4 - (hdrlen & 3);
2265 /* pick a tx rate */
2266 rate = params->ibp_rate0;
2267 if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
2268 /* XXX fall back to mcast/mgmt rate? */
2273 if (ieee80211_radiotap_active_vap(vap)) {
2274 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap;
2277 tap->wt_rate = rate;
2279 ieee80211_radiotap_tx(vap, m0);
2282 cmd = &ring->cmd[ring->cur];
2283 cmd->code = IWN_CMD_TX_DATA;
2285 cmd->qid = ring->qid;
2286 cmd->idx = ring->cur;
2288 tx = (struct iwn_cmd_data *)cmd->data;
2289 /* NB: no need to bzero tx, all fields are reinitialized here */
2290 tx->id = IWN_ID_BROADCAST;
2291 tx->flags = htole32(flags);
2292 tx->len = htole16(m0->m_pkthdr.len);
2293 tx->rate = iwn_plcp_signal(rate);
2294 tx->rts_ntries = params->ibp_try1; /* XXX? */
2295 tx->data_ntries = params->ibp_try0;
2296 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
2297 /* XXX use try count? */
2298 if (type == IEEE80211_FC0_TYPE_MGT) {
2299 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
2300 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
2301 tx->timeout = htole16(3);
2303 tx->timeout = htole16(2);
2305 tx->timeout = htole16(0);
2307 /* XXX alternate between Ant A and Ant B ? */
2308 tx->rflags = IWN_RFLAG_ANT_B; /* XXX params->ibp_pri >> 2 */
2309 tx->ridx = IWN_MAX_TX_RETRIES - 1;
2310 if (!IWN_RATE_IS_OFDM(rate))
2311 tx->rflags |= IWN_RFLAG_CCK;
2313 return iwn_tx_handoff(sc, ring, cmd, tx, ni, m0, hdrlen, pad);
2317 iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2318 const struct ieee80211_bpf_params *params)
2320 struct ieee80211com *ic = ni->ni_ic;
2321 struct ifnet *ifp = ic->ic_ifp;
2322 struct iwn_softc *sc = ifp->if_softc;
2323 struct iwn_tx_ring *txq;
2326 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
2327 ieee80211_free_node(ni);
2334 txq = &sc->txq[M_WME_GETAC(m)];
2336 txq = &sc->txq[params->ibp_pri & 3];
2337 if (txq->queued >= IWN_TX_RING_COUNT - 8) {
2339 /* ring is nearly full, stop flow */
2340 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
2342 if (params == NULL) {
2344 * Legacy path; interpret frame contents to decide
2345 * precisely how to send the frame.
2347 error = iwn_tx_data(sc, m, ni, txq);
2350 * Caller supplied explicit parameters to use in
2351 * sending the frame.
2353 error = iwn_tx_data_raw(sc, m, ni, txq, params);
2356 /* NB: m is reclaimed on tx failure */
2357 ieee80211_free_node(ni);
2365 iwn_watchdog(struct iwn_softc *sc)
2367 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) {
2368 struct ifnet *ifp = sc->sc_ifp;
2369 struct ieee80211com *ic = ifp->if_l2com;
2371 if_printf(ifp, "device timeout\n");
2372 ieee80211_runtask(ic, &sc->sc_reinit_task);
2377 iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2379 struct iwn_softc *sc = ifp->if_softc;
2380 struct ieee80211com *ic = ifp->if_l2com;
2381 struct ifreq *ifr = (struct ifreq *) data;
2382 int error = 0, startall = 0;
2387 if (ifp->if_flags & IFF_UP) {
2388 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2389 iwn_init_locked(sc);
2393 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2394 iwn_stop_locked(sc);
2398 ieee80211_start_all(ic);
2401 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2404 error = ether_ioctl(ifp, cmd, data);
2414 iwn_read_eeprom(struct iwn_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
2420 if ((error = iwn_eeprom_lock(sc)) != 0) {
2421 device_printf(sc->sc_dev,
2422 "%s: could not lock EEPROM, error %d\n", __func__, error);
2425 /* read and print regulatory domain */
2426 iwn_read_prom_data(sc, IWN_EEPROM_DOMAIN, domain, 4);
2427 device_printf(sc->sc_dev,"Reg Domain: %.4s", domain);
2429 /* read and print MAC address */
2430 iwn_read_prom_data(sc, IWN_EEPROM_MAC, macaddr, 6);
2431 printf(", address %6D\n", macaddr, ":");
2433 /* read the list of authorized channels */
2434 iwn_read_eeprom_channels(sc);
2436 /* read maximum allowed Tx power for 2GHz and 5GHz bands */
2437 iwn_read_prom_data(sc, IWN_EEPROM_MAXPOW, &val, 2);
2438 sc->maxpwr2GHz = val & 0xff;
2439 sc->maxpwr5GHz = val >> 8;
2440 /* check that EEPROM values are correct */
2441 if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50)
2442 sc->maxpwr5GHz = 38;
2443 if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50)
2444 sc->maxpwr2GHz = 38;
2445 DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n",
2446 sc->maxpwr2GHz, sc->maxpwr5GHz);
2448 /* read voltage at which samples were taken */
2449 iwn_read_prom_data(sc, IWN_EEPROM_VOLTAGE, &val, 2);
2450 sc->eeprom_voltage = (int16_t)le16toh(val);
2451 DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n",
2452 sc->eeprom_voltage);
2454 /* read power groups */
2455 iwn_read_prom_data(sc, IWN_EEPROM_BANDS, sc->bands, sizeof sc->bands);
2457 if (sc->sc_debug & IWN_DEBUG_ANY) {
2458 for (i = 0; i < IWN_NBANDS; i++)
2459 iwn_print_power_group(sc, i);
2462 iwn_eeprom_unlock(sc);
2465 struct iwn_chan_band {
2466 uint32_t addr; /* offset in EEPROM */
2467 uint32_t flags; /* net80211 flags */
2469 #define IWN_MAX_CHAN_PER_BAND 14
2470 uint8_t chan[IWN_MAX_CHAN_PER_BAND];
2474 iwn_read_eeprom_band(struct iwn_softc *sc, const struct iwn_chan_band *band)
2476 struct ifnet *ifp = sc->sc_ifp;
2477 struct ieee80211com *ic = ifp->if_l2com;
2478 struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
2479 struct ieee80211_channel *c;
2482 iwn_read_prom_data(sc, band->addr, channels,
2483 band->nchan * sizeof (struct iwn_eeprom_chan));
2485 for (i = 0; i < band->nchan; i++) {
2486 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) {
2487 DPRINTF(sc, IWN_DEBUG_RESET,
2488 "skip chan %d flags 0x%x maxpwr %d\n",
2489 band->chan[i], channels[i].flags,
2490 channels[i].maxpwr);
2493 chan = band->chan[i];
2495 /* translate EEPROM flags to net80211 */
2497 if ((channels[i].flags & IWN_EEPROM_CHAN_ACTIVE) == 0)
2498 flags |= IEEE80211_CHAN_PASSIVE;
2499 if ((channels[i].flags & IWN_EEPROM_CHAN_IBSS) == 0)
2500 flags |= IEEE80211_CHAN_NOADHOC;
2501 if (channels[i].flags & IWN_EEPROM_CHAN_RADAR) {
2502 flags |= IEEE80211_CHAN_DFS;
2503 /* XXX apparently IBSS may still be marked */
2504 flags |= IEEE80211_CHAN_NOADHOC;
2507 DPRINTF(sc, IWN_DEBUG_RESET,
2508 "add chan %d flags 0x%x maxpwr %d\n",
2509 chan, channels[i].flags, channels[i].maxpwr);
2511 c = &ic->ic_channels[ic->ic_nchans++];
2513 c->ic_freq = ieee80211_ieee2mhz(chan, band->flags);
2514 c->ic_maxregpower = channels[i].maxpwr;
2515 c->ic_maxpower = 2*c->ic_maxregpower;
2516 if (band->flags & IEEE80211_CHAN_2GHZ) {
2517 /* G =>'s B is supported */
2518 c->ic_flags = IEEE80211_CHAN_B | flags;
2520 c = &ic->ic_channels[ic->ic_nchans++];
2522 c->ic_flags = IEEE80211_CHAN_G | flags;
2523 } else { /* 5GHz band */
2524 c->ic_flags = IEEE80211_CHAN_A | flags;
2526 /* XXX no constraints on using HT20 */
2527 /* add HT20, HT40 added separately */
2528 c = &ic->ic_channels[ic->ic_nchans++];
2530 c->ic_flags |= IEEE80211_CHAN_HT20;
2531 /* XXX NARROW =>'s 1/2 and 1/4 width? */
2536 iwn_read_eeprom_ht40(struct iwn_softc *sc, const struct iwn_chan_band *band)
2538 struct ifnet *ifp = sc->sc_ifp;
2539 struct ieee80211com *ic = ifp->if_l2com;
2540 struct iwn_eeprom_chan channels[IWN_MAX_CHAN_PER_BAND];
2541 struct ieee80211_channel *c, *cent, *extc;
2544 iwn_read_prom_data(sc, band->addr, channels,
2545 band->nchan * sizeof (struct iwn_eeprom_chan));
2547 for (i = 0; i < band->nchan; i++) {
2548 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID) ||
2549 !(channels[i].flags & IWN_EEPROM_CHAN_WIDE)) {
2550 DPRINTF(sc, IWN_DEBUG_RESET,
2551 "skip chan %d flags 0x%x maxpwr %d\n",
2552 band->chan[i], channels[i].flags,
2553 channels[i].maxpwr);
2557 * Each entry defines an HT40 channel pair; find the
2558 * center channel, then the extension channel above.
2560 cent = ieee80211_find_channel_byieee(ic, band->chan[i],
2561 band->flags & ~IEEE80211_CHAN_HT);
2562 if (cent == NULL) { /* XXX shouldn't happen */
2563 device_printf(sc->sc_dev,
2564 "%s: no entry for channel %d\n",
2565 __func__, band->chan[i]);
2568 extc = ieee80211_find_channel(ic, cent->ic_freq+20,
2569 band->flags & ~IEEE80211_CHAN_HT);
2571 DPRINTF(sc, IWN_DEBUG_RESET,
2572 "skip chan %d, extension channel not found\n",
2577 DPRINTF(sc, IWN_DEBUG_RESET,
2578 "add ht40 chan %d flags 0x%x maxpwr %d\n",
2579 band->chan[i], channels[i].flags, channels[i].maxpwr);
2581 c = &ic->ic_channels[ic->ic_nchans++];
2583 c->ic_extieee = extc->ic_ieee;
2584 c->ic_flags &= ~IEEE80211_CHAN_HT;
2585 c->ic_flags |= IEEE80211_CHAN_HT40U;
2586 c = &ic->ic_channels[ic->ic_nchans++];
2588 c->ic_extieee = cent->ic_ieee;
2589 c->ic_flags &= ~IEEE80211_CHAN_HT;
2590 c->ic_flags |= IEEE80211_CHAN_HT40D;
2595 iwn_read_eeprom_channels(struct iwn_softc *sc)
2597 #define N(a) (sizeof(a)/sizeof(a[0]))
2598 static const struct iwn_chan_band iwn_bands[] = {
2599 { IWN_EEPROM_BAND1, IEEE80211_CHAN_G, 14,
2600 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 } },
2601 { IWN_EEPROM_BAND2, IEEE80211_CHAN_A, 13,
2602 { 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 } },
2603 { IWN_EEPROM_BAND3, IEEE80211_CHAN_A, 12,
2604 { 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 } },
2605 { IWN_EEPROM_BAND4, IEEE80211_CHAN_A, 11,
2606 { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 } },
2607 { IWN_EEPROM_BAND5, IEEE80211_CHAN_A, 6,
2608 { 145, 149, 153, 157, 161, 165 } },
2609 { IWN_EEPROM_BAND6, IEEE80211_CHAN_G | IEEE80211_CHAN_HT40, 7,
2610 { 1, 2, 3, 4, 5, 6, 7 } },
2611 { IWN_EEPROM_BAND7, IEEE80211_CHAN_A | IEEE80211_CHAN_HT40, 11,
2612 { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 } }
2614 struct ifnet *ifp = sc->sc_ifp;
2615 struct ieee80211com *ic = ifp->if_l2com;
2618 /* read the list of authorized channels */
2619 for (i = 0; i < N(iwn_bands)-2; i++)
2620 iwn_read_eeprom_band(sc, &iwn_bands[i]);
2621 for (; i < N(iwn_bands); i++)
2622 iwn_read_eeprom_ht40(sc, &iwn_bands[i]);
2623 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
2629 iwn_print_power_group(struct iwn_softc *sc, int i)
2631 struct iwn_eeprom_band *band = &sc->bands[i];
2632 struct iwn_eeprom_chan_samples *chans = band->chans;
2635 printf("===band %d===\n", i);
2636 printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi);
2637 printf("chan1 num=%d\n", chans[0].num);
2638 for (c = 0; c < IWN_NTXCHAINS; c++) {
2639 for (j = 0; j < IWN_NSAMPLES; j++) {
2640 printf("chain %d, sample %d: temp=%d gain=%d "
2641 "power=%d pa_det=%d\n", c, j,
2642 chans[0].samples[c][j].temp,
2643 chans[0].samples[c][j].gain,
2644 chans[0].samples[c][j].power,
2645 chans[0].samples[c][j].pa_det);
2648 printf("chan2 num=%d\n", chans[1].num);
2649 for (c = 0; c < IWN_NTXCHAINS; c++) {
2650 for (j = 0; j < IWN_NSAMPLES; j++) {
2651 printf("chain %d, sample %d: temp=%d gain=%d "
2652 "power=%d pa_det=%d\n", c, j,
2653 chans[1].samples[c][j].temp,
2654 chans[1].samples[c][j].gain,
2655 chans[1].samples[c][j].power,
2656 chans[1].samples[c][j].pa_det);
2663 * Send a command to the firmware.
2666 iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
2668 struct iwn_tx_ring *ring = &sc->txq[4];
2669 struct iwn_tx_desc *desc;
2670 struct iwn_tx_cmd *cmd;
2673 IWN_LOCK_ASSERT(sc);
2675 KASSERT(size <= sizeof cmd->data, ("Command too big"));
2677 desc = &ring->desc[ring->cur];
2678 cmd = &ring->cmd[ring->cur];
2682 cmd->qid = ring->qid;
2683 cmd->idx = ring->cur;
2684 memcpy(cmd->data, buf, size);
2686 paddr = ring->cmd_dma.paddr + ring->cur * sizeof (struct iwn_tx_cmd);
2688 IWN_SET_DESC_NSEGS(desc, 1);
2689 IWN_SET_DESC_SEG(desc, 0, paddr, 4 + size);
2690 sc->shared->len[ring->qid][ring->cur] = htole16(8);
2691 if (ring->cur < IWN_TX_WINDOW) {
2692 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
2696 DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n",
2697 __func__, iwn_intr_str(cmd->code), cmd->code,
2698 cmd->flags, cmd->qid, cmd->idx);
2701 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
2702 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
2704 return async ? 0 : msleep(cmd, &sc->sc_mtx, PCATCH, "iwncmd", hz);
2707 static const uint8_t iwn_ridx_to_plcp[] = {
2708 10, 20, 55, 110, /* CCK */
2709 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 0x3 /* OFDM R1-R4 */
2711 static const uint8_t iwn_siso_mcs_to_plcp[] = {
2712 0, 0, 0, 0, /* CCK */
2713 0, 0, 1, 2, 3, 4, 5, 6, 7 /* HT */
2715 static const uint8_t iwn_mimo_mcs_to_plcp[] = {
2716 0, 0, 0, 0, /* CCK */
2717 8, 8, 9, 10, 11, 12, 13, 14, 15 /* HT */
2719 static const uint8_t iwn_prev_ridx[] = {
2720 /* NB: allow fallback from CCK11 to OFDM9 and from OFDM6 to CCK5 */
2721 0, 0, 1, 5, /* CCK */
2722 2, 4, 3, 6, 7, 8, 9, 10, 10 /* OFDM */
2726 * Configure hardware link parameters for the specified
2727 * node operating on the specified channel.
2730 iwn_set_link_quality(struct iwn_softc *sc, uint8_t id,
2731 const struct ieee80211_channel *c, int async)
2733 struct iwn_cmd_link_quality lq;
2736 memset(&lq, 0, sizeof(lq));
2738 if (IEEE80211_IS_CHAN_HT(c)) {
2744 if (id == IWN_ID_BSS)
2745 ridx = IWN_RATE_OFDM54;
2746 else if (IEEE80211_IS_CHAN_A(c))
2747 ridx = IWN_RATE_OFDM6;
2749 ridx = IWN_RATE_CCK1;
2750 for (i = 0; i < IWN_MAX_TX_RETRIES; i++) {
2751 /* XXX toggle antenna for retry patterns */
2752 if (IEEE80211_IS_CHAN_HT40(c)) {
2753 lq.table[i].rate = iwn_mimo_mcs_to_plcp[ridx]
2755 lq.table[i].rflags = IWN_RFLAG_HT
2759 } else if (IEEE80211_IS_CHAN_HT(c)) {
2760 lq.table[i].rate = iwn_siso_mcs_to_plcp[ridx]
2762 lq.table[i].rflags = IWN_RFLAG_HT
2766 lq.table[i].rate = iwn_ridx_to_plcp[ridx];
2767 if (ridx <= IWN_RATE_CCK11)
2768 lq.table[i].rflags = IWN_RFLAG_CCK;
2769 lq.table[i].rflags |= IWN_RFLAG_ANT_B;
2771 ridx = iwn_prev_ridx[ridx];
2775 lq.ampdu_disable = 3;
2776 lq.ampdu_limit = htole16(4000);
2778 if (sc->sc_debug & IWN_DEBUG_STATE) {
2779 printf("%s: set link quality for node %d, mimo %d ssmask %d\n",
2780 __func__, id, lq.mimo, lq.ssmask);
2781 printf("%s:", __func__);
2782 for (i = 0; i < IWN_MAX_TX_RETRIES; i++)
2783 printf(" %d:%x", lq.table[i].rate, lq.table[i].rflags);
2787 return iwn_cmd(sc, IWN_CMD_TX_LINK_QUALITY, &lq, sizeof(lq), async);
2793 * Install a pairwise key into the hardware.
2796 iwn_set_key(struct ieee80211com *ic, struct ieee80211_node *ni,
2797 const struct ieee80211_key *k)
2799 struct iwn_softc *sc = ic->ic_softc;
2800 struct iwn_node_info node;
2802 if (k->k_flags & IEEE80211_KEY_GROUP)
2805 memset(&node, 0, sizeof node);
2807 switch (k->k_cipher) {
2808 case IEEE80211_CIPHER_CCMP:
2809 node.security = htole16(IWN_CIPHER_CCMP);
2810 memcpy(node.key, k->k_key, k->k_len);
2816 node.id = IWN_ID_BSS;
2817 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
2818 node.control = IWN_NODE_UPDATE;
2819 node.flags = IWN_FLAG_SET_KEY;
2821 return iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
2826 iwn_wme_update(struct ieee80211com *ic)
2828 #define IWN_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */
2829 #define IWN_TXOP_TO_US(v) (v<<5)
2830 struct iwn_softc *sc = ic->ic_ifp->if_softc;
2831 struct iwn_edca_params cmd;
2834 memset(&cmd, 0, sizeof cmd);
2835 cmd.flags = htole32(IWN_EDCA_UPDATE);
2836 for (i = 0; i < WME_NUM_AC; i++) {
2837 const struct wmeParams *wmep =
2838 &ic->ic_wme.wme_chanParams.cap_wmeParams[i];
2839 cmd.ac[i].aifsn = wmep->wmep_aifsn;
2840 cmd.ac[i].cwmin = htole16(IWN_EXP2(wmep->wmep_logcwmin));
2841 cmd.ac[i].cwmax = htole16(IWN_EXP2(wmep->wmep_logcwmax));
2842 cmd.ac[i].txoplimit =
2843 htole16(IWN_TXOP_TO_US(wmep->wmep_txopLimit));
2846 (void) iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1 /*async*/);
2849 #undef IWN_TXOP_TO_US
2854 iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on)
2856 struct iwn_cmd_led led;
2859 led.unit = htole32(100000); /* on/off in unit of 100ms */
2863 (void) iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1);
2867 * Set the critical temperature at which the firmware will automatically stop
2868 * the radio transmitter.
2871 iwn_set_critical_temp(struct iwn_softc *sc)
2873 struct iwn_ucode_info *uc = &sc->ucode_info;
2874 struct iwn_critical_temp crit;
2875 uint32_t r1, r2, r3, temp;
2877 r1 = le32toh(uc->temp[0].chan20MHz);
2878 r2 = le32toh(uc->temp[1].chan20MHz);
2879 r3 = le32toh(uc->temp[2].chan20MHz);
2880 /* inverse function of iwn_get_temperature() */
2881 temp = r2 + (IWN_CTOK(110) * (r3 - r1)) / 259;
2883 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_CTEMP_STOP_RF);
2885 memset(&crit, 0, sizeof crit);
2886 crit.tempR = htole32(temp);
2887 DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %u\n", temp);
2888 return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0);
2892 iwn_enable_tsf(struct iwn_softc *sc, struct ieee80211_node *ni)
2894 struct iwn_cmd_tsf tsf;
2897 memset(&tsf, 0, sizeof tsf);
2898 memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t));
2899 tsf.bintval = htole16(ni->ni_intval);
2900 tsf.lintval = htole16(10);
2903 /* compute remaining time until next beacon */
2904 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */
2905 DPRINTF(sc, IWN_DEBUG_ANY, "%s: val = %ju %s\n", __func__,
2906 val, val == 0 ? "correcting" : "");
2909 mod = le64toh(tsf.tstamp) % val;
2910 tsf.binitval = htole32((uint32_t)(val - mod));
2912 DPRINTF(sc, IWN_DEBUG_RESET, "TSF bintval=%u tstamp=%ju, init=%u\n",
2913 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod));
2915 if (iwn_cmd(sc, IWN_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
2916 device_printf(sc->sc_dev,
2917 "%s: could not enable TSF\n", __func__);
2921 iwn_power_calibration(struct iwn_softc *sc, int temp)
2923 struct ifnet *ifp = sc->sc_ifp;
2924 struct ieee80211com *ic = ifp->if_l2com;
2926 KASSERT(ic->ic_state == IEEE80211_S_RUN, ("not running"));
2928 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n",
2929 __func__, sc->temp, temp);
2931 /* adjust Tx power if need be (delta >= 3°C) */
2932 if (abs(temp - sc->temp) < 3)
2937 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: set Tx power for channel %d\n",
2938 __func__, ieee80211_chan2ieee(ic, ic->ic_bsschan));
2939 if (iwn_set_txpower(sc, ic->ic_bsschan, 1) != 0) {
2940 /* just warn, too bad for the automatic calibration... */
2941 device_printf(sc->sc_dev,
2942 "%s: could not adjust Tx power\n", __func__);
2947 * Set Tx power for a given channel (each rate has its own power settings).
2948 * This function takes into account the regulatory information from EEPROM,
2949 * the current temperature and the current voltage.
2952 iwn_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch, int async)
2954 /* fixed-point arithmetic division using a n-bit fractional part */
2955 #define fdivround(a, b, n) \
2956 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
2957 /* linear interpolation */
2958 #define interpolate(x, x1, y1, x2, y2, n) \
2959 ((y1) + fdivround(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
2961 static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 };
2962 struct ifnet *ifp = sc->sc_ifp;
2963 struct ieee80211com *ic = ifp->if_l2com;
2964 struct iwn_ucode_info *uc = &sc->ucode_info;
2965 struct iwn_cmd_txpower cmd;
2966 struct iwn_eeprom_chan_samples *chans;
2967 const uint8_t *rf_gain, *dsp_gain;
2968 int32_t vdiff, tdiff;
2969 int i, c, grp, maxpwr;
2972 /* get channel number */
2973 chan = ieee80211_chan2ieee(ic, ch);
2975 memset(&cmd, 0, sizeof cmd);
2976 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1;
2979 if (IEEE80211_IS_CHAN_5GHZ(ch)) {
2980 maxpwr = sc->maxpwr5GHz;
2981 rf_gain = iwn_rf_gain_5ghz;
2982 dsp_gain = iwn_dsp_gain_5ghz;
2984 maxpwr = sc->maxpwr2GHz;
2985 rf_gain = iwn_rf_gain_2ghz;
2986 dsp_gain = iwn_dsp_gain_2ghz;
2989 /* compute voltage compensation */
2990 vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7;
2995 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
2996 "%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n",
2997 __func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage);
2999 /* get channel's attenuation group */
3000 if (chan <= 20) /* 1-20 */
3002 else if (chan <= 43) /* 34-43 */
3004 else if (chan <= 70) /* 44-70 */
3006 else if (chan <= 124) /* 71-124 */
3010 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3011 "%s: chan %d, attenuation group=%d\n", __func__, chan, grp);
3013 /* get channel's sub-band */
3014 for (i = 0; i < IWN_NBANDS; i++)
3015 if (sc->bands[i].lo != 0 &&
3016 sc->bands[i].lo <= chan && chan <= sc->bands[i].hi)
3018 chans = sc->bands[i].chans;
3019 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3020 "%s: chan %d sub-band=%d\n", __func__, chan, i);
3022 for (c = 0; c < IWN_NTXCHAINS; c++) {
3023 uint8_t power, gain, temp;
3024 int maxchpwr, pwr, ridx, idx;
3026 power = interpolate(chan,
3027 chans[0].num, chans[0].samples[c][1].power,
3028 chans[1].num, chans[1].samples[c][1].power, 1);
3029 gain = interpolate(chan,
3030 chans[0].num, chans[0].samples[c][1].gain,
3031 chans[1].num, chans[1].samples[c][1].gain, 1);
3032 temp = interpolate(chan,
3033 chans[0].num, chans[0].samples[c][1].temp,
3034 chans[1].num, chans[1].samples[c][1].temp, 1);
3035 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3036 "%s: Tx chain %d: power=%d gain=%d temp=%d\n",
3037 __func__, c, power, gain, temp);
3039 /* compute temperature compensation */
3040 tdiff = ((sc->temp - temp) * 2) / tdiv[grp];
3041 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3042 "%s: temperature compensation=%d (current=%d, EEPROM=%d)\n",
3043 __func__, tdiff, sc->temp, temp);
3045 for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) {
3046 maxchpwr = ch->ic_maxpower;
3047 if ((ridx / 8) & 1) {
3048 /* MIMO: decrease Tx power (-3dB) */
3054 /* decrease power for highest OFDM rates */
3055 if ((ridx % 8) == 5) /* 48Mbit/s */
3057 else if ((ridx % 8) == 6) /* 54Mbit/s */
3059 else if ((ridx % 8) == 7) /* 60Mbit/s */
3065 idx = gain - (pwr - power) - tdiff - vdiff;
3066 if ((ridx / 8) & 1) /* MIMO */
3067 idx += (int32_t)le32toh(uc->atten[grp][c]);
3070 idx += 9; /* 5GHz */
3071 if (ridx == IWN_RIDX_MAX)
3074 /* make sure idx stays in a valid range */
3077 else if (idx > IWN_MAX_PWR_INDEX)
3078 idx = IWN_MAX_PWR_INDEX;
3080 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3081 "%s: Tx chain %d, rate idx %d: power=%d\n",
3082 __func__, c, ridx, idx);
3083 cmd.power[ridx].rf_gain[c] = rf_gain[idx];
3084 cmd.power[ridx].dsp_gain[c] = dsp_gain[idx];
3088 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW,
3089 "%s: set tx power for chan %d\n", __func__, chan);
3090 return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async);
3097 * Get the best (maximum) RSSI among the
3098 * connected antennas and convert to dBm.
3101 iwn_get_rssi(struct iwn_softc *sc, const struct iwn_rx_stat *stat)
3103 int mask, agc, rssi;
3105 mask = (le16toh(stat->antenna) >> 4) & 0x7;
3106 agc = (le16toh(stat->agc) >> 7) & 0x7f;
3110 if (mask & (1 << 0)) /* Ant A */
3111 rssi = max(rssi, stat->rssi[0]);
3112 if (mask & (1 << 1)) /* Ant B */
3113 rssi = max(rssi, stat->rssi[2]);
3114 if (mask & (1 << 2)) /* Ant C */
3115 rssi = max(rssi, stat->rssi[4]);
3117 rssi = max(rssi, stat->rssi[0]);
3118 rssi = max(rssi, stat->rssi[2]);
3119 rssi = max(rssi, stat->rssi[4]);
3121 DPRINTF(sc, IWN_DEBUG_RECV, "%s: agc %d mask 0x%x rssi %d %d %d "
3122 "result %d\n", __func__, agc, mask,
3123 stat->rssi[0], stat->rssi[2], stat->rssi[4],
3124 rssi - agc - IWN_RSSI_TO_DBM);
3125 return rssi - agc - IWN_RSSI_TO_DBM;
3129 * Get the average noise among Rx antennas (in dBm).
3132 iwn_get_noise(const struct iwn_rx_general_stats *stats)
3134 int i, total, nbant, noise;
3137 for (i = 0; i < 3; i++) {
3138 noise = le32toh(stats->noise[i]) & 0xff;
3144 /* there should be at least one antenna but check anyway */
3145 return (nbant == 0) ? -127 : (total / nbant) - 107;
3149 * Read temperature (in degC) from the on-board thermal sensor.
3152 iwn_get_temperature(struct iwn_softc *sc)
3154 struct iwn_ucode_info *uc = &sc->ucode_info;
3155 int32_t r1, r2, r3, r4, temp;
3157 r1 = le32toh(uc->temp[0].chan20MHz);
3158 r2 = le32toh(uc->temp[1].chan20MHz);
3159 r3 = le32toh(uc->temp[2].chan20MHz);
3160 r4 = le32toh(sc->rawtemp);
3162 if (r1 == r3) /* prevents division by 0 (should not happen) */
3165 /* sign-extend 23-bit R4 value to 32-bit */
3166 r4 = (r4 << 8) >> 8;
3167 /* compute temperature */
3168 temp = (259 * (r4 - r2)) / (r3 - r1);
3169 temp = (temp * 97) / 100 + 8;
3171 return IWN_KTOC(temp);
3175 * Initialize sensitivity calibration state machine.
3178 iwn_init_sensitivity(struct iwn_softc *sc)
3180 struct iwn_calib_state *calib = &sc->calib;
3181 struct iwn_phy_calib_cmd cmd;
3184 /* reset calibration state */
3185 memset(calib, 0, sizeof (*calib));
3186 calib->state = IWN_CALIB_STATE_INIT;
3187 calib->cck_state = IWN_CCK_STATE_HIFA;
3188 /* initial values taken from the reference driver */
3189 calib->corr_ofdm_x1 = 105;
3190 calib->corr_ofdm_mrc_x1 = 220;
3191 calib->corr_ofdm_x4 = 90;
3192 calib->corr_ofdm_mrc_x4 = 170;
3193 calib->corr_cck_x4 = 125;
3194 calib->corr_cck_mrc_x4 = 200;
3195 calib->energy_cck = 100;
3197 /* write initial sensitivity values */
3198 error = iwn_send_sensitivity(sc);
3202 memset(&cmd, 0, sizeof cmd);
3203 cmd.code = IWN_SET_DIFF_GAIN;
3204 /* differential gains initially set to 0 for all 3 antennas */
3205 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: calibrate phy\n", __func__);
3206 return iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1);
3210 * Collect noise and RSSI statistics for the first 20 beacons received
3211 * after association and use them to determine connected antennas and
3212 * set differential gains.
3215 iwn_compute_differential_gain(struct iwn_softc *sc,
3216 const struct iwn_rx_general_stats *stats)
3218 struct iwn_calib_state *calib = &sc->calib;
3219 struct iwn_phy_calib_cmd cmd;
3222 /* accumulate RSSI and noise for all 3 antennas */
3223 for (i = 0; i < 3; i++) {
3224 calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff;
3225 calib->noise[i] += le32toh(stats->noise[i]) & 0xff;
3228 /* we update differential gain only once after 20 beacons */
3229 if (++calib->nbeacons < 20)
3232 /* determine antenna with highest average RSSI */
3233 val = max(calib->rssi[0], calib->rssi[1]);
3234 val = max(calib->rssi[2], val);
3236 /* determine which antennas are connected */
3238 for (i = 0; i < 3; i++)
3239 if (val - calib->rssi[i] <= 15 * 20)
3240 sc->antmsk |= 1 << i;
3241 /* if neither Ant A and Ant B are connected.. */
3242 if ((sc->antmsk & (1 << 0 | 1 << 1)) == 0)
3243 sc->antmsk |= 1 << 1; /* ..mark Ant B as connected! */
3245 /* get minimal noise among connected antennas */
3246 val = INT_MAX; /* ok, there's at least one */
3247 for (i = 0; i < 3; i++)
3248 if (sc->antmsk & (1 << i))
3249 val = min(calib->noise[i], val);
3251 memset(&cmd, 0, sizeof cmd);
3252 cmd.code = IWN_SET_DIFF_GAIN;
3253 /* set differential gains for connected antennas */
3254 for (i = 0; i < 3; i++) {
3255 if (sc->antmsk & (1 << i)) {
3256 cmd.gain[i] = (calib->noise[i] - val) / 30;
3257 /* limit differential gain to 3 */
3258 cmd.gain[i] = min(cmd.gain[i], 3);
3259 cmd.gain[i] |= IWN_GAIN_SET;
3262 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3263 "%s: set differential gains Ant A/B/C: %x/%x/%x (%x)\n",
3264 __func__,cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->antmsk);
3265 if (iwn_cmd(sc, IWN_PHY_CALIB, &cmd, sizeof cmd, 1) == 0)
3266 calib->state = IWN_CALIB_STATE_RUN;
3270 * Tune RF Rx sensitivity based on the number of false alarms detected
3271 * during the last beacon period.
3274 iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats)
3276 #define inc_clip(val, inc, max) \
3277 if ((val) < (max)) { \
3278 if ((val) < (max) - (inc)) \
3284 #define dec_clip(val, dec, min) \
3285 if ((val) > (min)) { \
3286 if ((val) > (min) + (dec)) \
3293 struct iwn_calib_state *calib = &sc->calib;
3294 uint32_t val, rxena, fa;
3295 uint32_t energy[3], energy_min;
3296 uint8_t noise[3], noise_ref;
3297 int i, needs_update = 0;
3299 /* check that we've been enabled long enough */
3300 if ((rxena = le32toh(stats->general.load)) == 0)
3303 /* compute number of false alarms since last call for OFDM */
3304 fa = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm;
3305 fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm;
3306 fa *= 200 * 1024; /* 200TU */
3308 /* save counters values for next call */
3309 calib->bad_plcp_ofdm = le32toh(stats->ofdm.bad_plcp);
3310 calib->fa_ofdm = le32toh(stats->ofdm.fa);
3312 if (fa > 50 * rxena) {
3313 /* high false alarm count, decrease sensitivity */
3314 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3315 "%s: OFDM high false alarm count: %u\n", __func__, fa);
3316 inc_clip(calib->corr_ofdm_x1, 1, 140);
3317 inc_clip(calib->corr_ofdm_mrc_x1, 1, 270);
3318 inc_clip(calib->corr_ofdm_x4, 1, 120);
3319 inc_clip(calib->corr_ofdm_mrc_x4, 1, 210);
3321 } else if (fa < 5 * rxena) {
3322 /* low false alarm count, increase sensitivity */
3323 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3324 "%s: OFDM low false alarm count: %u\n", __func__, fa);
3325 dec_clip(calib->corr_ofdm_x1, 1, 105);
3326 dec_clip(calib->corr_ofdm_mrc_x1, 1, 220);
3327 dec_clip(calib->corr_ofdm_x4, 1, 85);
3328 dec_clip(calib->corr_ofdm_mrc_x4, 1, 170);
3331 /* compute maximum noise among 3 antennas */
3332 for (i = 0; i < 3; i++)
3333 noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff;
3334 val = max(noise[0], noise[1]);
3335 val = max(noise[2], val);
3336 /* insert it into our samples table */
3337 calib->noise_samples[calib->cur_noise_sample] = val;
3338 calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20;
3340 /* compute maximum noise among last 20 samples */
3341 noise_ref = calib->noise_samples[0];
3342 for (i = 1; i < 20; i++)
3343 noise_ref = max(noise_ref, calib->noise_samples[i]);
3345 /* compute maximum energy among 3 antennas */
3346 for (i = 0; i < 3; i++)
3347 energy[i] = le32toh(stats->general.energy[i]);
3348 val = min(energy[0], energy[1]);
3349 val = min(energy[2], val);
3350 /* insert it into our samples table */
3351 calib->energy_samples[calib->cur_energy_sample] = val;
3352 calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10;
3354 /* compute minimum energy among last 10 samples */
3355 energy_min = calib->energy_samples[0];
3356 for (i = 1; i < 10; i++)
3357 energy_min = max(energy_min, calib->energy_samples[i]);
3360 /* compute number of false alarms since last call for CCK */
3361 fa = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck;
3362 fa += le32toh(stats->cck.fa) - calib->fa_cck;
3363 fa *= 200 * 1024; /* 200TU */
3365 /* save counters values for next call */
3366 calib->bad_plcp_cck = le32toh(stats->cck.bad_plcp);
3367 calib->fa_cck = le32toh(stats->cck.fa);
3369 if (fa > 50 * rxena) {
3370 /* high false alarm count, decrease sensitivity */
3371 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3372 "%s: CCK high false alarm count: %u\n", __func__, fa);
3373 calib->cck_state = IWN_CCK_STATE_HIFA;
3376 if (calib->corr_cck_x4 > 160) {
3377 calib->noise_ref = noise_ref;
3378 if (calib->energy_cck > 2)
3379 dec_clip(calib->energy_cck, 2, energy_min);
3381 if (calib->corr_cck_x4 < 160) {
3382 calib->corr_cck_x4 = 161;
3385 inc_clip(calib->corr_cck_x4, 3, 200);
3387 inc_clip(calib->corr_cck_mrc_x4, 3, 400);
3389 } else if (fa < 5 * rxena) {
3390 /* low false alarm count, increase sensitivity */
3391 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3392 "%s: CCK low false alarm count: %u\n", __func__, fa);
3393 calib->cck_state = IWN_CCK_STATE_LOFA;
3396 if (calib->cck_state != 0 &&
3397 ((calib->noise_ref - noise_ref) > 2 ||
3398 calib->low_fa > 100)) {
3399 inc_clip(calib->energy_cck, 2, 97);
3400 dec_clip(calib->corr_cck_x4, 3, 125);
3401 dec_clip(calib->corr_cck_mrc_x4, 3, 200);
3404 /* not worth to increase or decrease sensitivity */
3405 DPRINTF(sc, IWN_DEBUG_CALIBRATE,
3406 "%s: CCK normal false alarm count: %u\n", __func__, fa);
3408 calib->noise_ref = noise_ref;
3410 if (calib->cck_state == IWN_CCK_STATE_HIFA) {
3411 /* previous interval had many false alarms */
3412 dec_clip(calib->energy_cck, 8, energy_min);
3414 calib->cck_state = IWN_CCK_STATE_INIT;
3418 (void)iwn_send_sensitivity(sc);
3424 iwn_send_sensitivity(struct iwn_softc *sc)
3426 struct iwn_calib_state *calib = &sc->calib;
3427 struct iwn_sensitivity_cmd cmd;
3429 memset(&cmd, 0, sizeof cmd);
3430 cmd.which = IWN_SENSITIVITY_WORKTBL;
3431 /* OFDM modulation */
3432 cmd.corr_ofdm_x1 = htole16(calib->corr_ofdm_x1);
3433 cmd.corr_ofdm_mrc_x1 = htole16(calib->corr_ofdm_mrc_x1);
3434 cmd.corr_ofdm_x4 = htole16(calib->corr_ofdm_x4);
3435 cmd.corr_ofdm_mrc_x4 = htole16(calib->corr_ofdm_mrc_x4);
3436 cmd.energy_ofdm = htole16(100);
3437 cmd.energy_ofdm_th = htole16(62);
3438 /* CCK modulation */
3439 cmd.corr_cck_x4 = htole16(calib->corr_cck_x4);
3440 cmd.corr_cck_mrc_x4 = htole16(calib->corr_cck_mrc_x4);
3441 cmd.energy_cck = htole16(calib->energy_cck);
3442 /* Barker modulation: use default values */
3443 cmd.corr_barker = htole16(190);
3444 cmd.corr_barker_mrc = htole16(390);
3446 DPRINTF(sc, IWN_DEBUG_RESET,
3447 "%s: set sensitivity %d/%d/%d/%d/%d/%d/%d\n", __func__,
3448 calib->corr_ofdm_x1, calib->corr_ofdm_mrc_x1, calib->corr_ofdm_x4,
3449 calib->corr_ofdm_mrc_x4, calib->corr_cck_x4,
3450 calib->corr_cck_mrc_x4, calib->energy_cck);
3451 return iwn_cmd(sc, IWN_SENSITIVITY, &cmd, sizeof cmd, 1);
3455 iwn_auth(struct iwn_softc *sc, struct ieee80211vap *vap)
3457 struct ifnet *ifp = sc->sc_ifp;
3458 struct ieee80211com *ic = ifp->if_l2com;
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, struct ieee80211vap *vap)
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 ieee80211_node *ni = vap->iv_bss;
3553 struct iwn_node_info node;
3554 int error, maxrxampdu, ampdudensity;
3556 sc->calib.state = IWN_CALIB_STATE_INIT;
3558 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3559 /* link LED blinks while monitoring */
3560 iwn_set_led(sc, IWN_LED_LINK, 5, 5);
3564 iwn_enable_tsf(sc, ni);
3566 /* update adapter's configuration */
3567 sc->config.associd = htole16(IEEE80211_AID(ni->ni_associd));
3568 /* short preamble/slot time are negotiated when associating */
3569 sc->config.flags &= ~htole32(IWN_CONFIG_SHPREAMBLE | IWN_CONFIG_SHSLOT);
3570 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3571 sc->config.flags |= htole32(IWN_CONFIG_SHSLOT);
3572 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
3573 sc->config.flags |= htole32(IWN_CONFIG_SHPREAMBLE);
3574 if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
3575 sc->config.flags &= ~htole32(IWN_CONFIG_HT);
3576 if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
3577 sc->config.flags |= htole32(IWN_CONFIG_HT40U);
3578 else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
3579 sc->config.flags |= htole32(IWN_CONFIG_HT40D);
3581 sc->config.flags |= htole32(IWN_CONFIG_HT20);
3582 sc->config.rxchain = htole16(
3583 (3 << IWN_RXCHAIN_VALID_S)
3584 | (3 << IWN_RXCHAIN_MIMO_CNT_S)
3585 | (1 << IWN_RXCHAIN_CNT_S)
3586 | IWN_RXCHAIN_MIMO_FORCE);
3588 maxrxampdu = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
3589 ampdudensity = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
3591 maxrxampdu = ampdudensity = 0;
3592 sc->config.filter |= htole32(IWN_FILTER_BSS);
3594 DPRINTF(sc, IWN_DEBUG_STATE,
3595 "%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
3596 "ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
3597 "myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
3599 le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
3600 sc->config.cck_mask, sc->config.ofdm_mask,
3601 sc->config.ht_single_mask, sc->config.ht_dual_mask,
3602 le16toh(sc->config.rxchain),
3603 sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
3604 le16toh(sc->config.associd), le32toh(sc->config.filter));
3605 error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
3606 sizeof (struct iwn_config), 1);
3608 device_printf(sc->sc_dev,
3609 "%s: could not update configuration, error %d\n",
3613 sc->sc_curchan = ni->ni_chan;
3615 /* configuration has changed, set Tx power accordingly */
3616 error = iwn_set_txpower(sc, ni->ni_chan, 1);
3618 device_printf(sc->sc_dev,
3619 "%s: could not set Tx power, error %d\n", __func__, error);
3624 memset(&node, 0, sizeof node);
3625 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr);
3626 node.id = IWN_ID_BSS;
3627 node.htflags = htole32(
3628 (maxrxampdu << IWN_MAXRXAMPDU_S) |
3629 (ampdudensity << IWN_MPDUDENSITY_S));
3630 DPRINTF(sc, IWN_DEBUG_STATE, "%s: add BSS node, id %d htflags 0x%x\n",
3631 __func__, node.id, le32toh(node.htflags));
3632 error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 1);
3634 device_printf(sc->sc_dev,"could not add BSS node\n");
3637 error = iwn_set_link_quality(sc, node.id, ni->ni_chan, 1);
3639 device_printf(sc->sc_dev,
3640 "%s: could not setup MRR for node %d, error %d\n",
3641 __func__, node.id, error);
3645 error = iwn_init_sensitivity(sc);
3647 device_printf(sc->sc_dev,
3648 "%s: could not set sensitivity, error %d\n",
3653 /* start/restart periodic calibration timer */
3654 sc->calib.state = IWN_CALIB_STATE_ASSOC;
3655 iwn_calib_reset(sc);
3657 /* link LED always on while associated */
3658 iwn_set_led(sc, IWN_LED_LINK, 0, 1);
3665 * Send a scan request to the firmware. Since this command is huge, we map it
3666 * into a mbuf instead of using the pre-allocated set of commands.
3669 iwn_scan(struct iwn_softc *sc)
3671 struct ifnet *ifp = sc->sc_ifp;
3672 struct ieee80211com *ic = ifp->if_l2com;
3673 struct ieee80211_scan_state *ss = ic->ic_scan; /*XXX*/
3674 struct iwn_tx_ring *ring = &sc->txq[4];
3675 struct iwn_tx_desc *desc;
3676 struct iwn_tx_data *data;
3677 struct iwn_tx_cmd *cmd;
3678 struct iwn_cmd_data *tx;
3679 struct iwn_scan_hdr *hdr;
3680 struct iwn_scan_essid *essid;
3681 struct iwn_scan_chan *chan;
3682 struct ieee80211_frame *wh;
3683 struct ieee80211_rateset *rs;
3684 struct ieee80211_channel *c;
3685 enum ieee80211_phymode mode;
3687 int pktlen, error, nrates;
3688 bus_addr_t physaddr;
3690 desc = &ring->desc[ring->cur];
3691 data = &ring->data[ring->cur];
3694 data->m = m_getcl(M_DONTWAIT, MT_DATA, 0);
3695 if (data->m == NULL) {
3696 device_printf(sc->sc_dev,
3697 "%s: could not allocate mbuf for scan command\n", __func__);
3701 cmd = mtod(data->m, struct iwn_tx_cmd *);
3702 cmd->code = IWN_CMD_SCAN;
3704 cmd->qid = ring->qid;
3705 cmd->idx = ring->cur;
3707 hdr = (struct iwn_scan_hdr *)cmd->data;
3708 memset(hdr, 0, sizeof (struct iwn_scan_hdr));
3710 /* XXX use scan state */
3712 * Move to the next channel if no packets are received within 5 msecs
3713 * after sending the probe request (this helps to reduce the duration
3716 hdr->quiet = htole16(5); /* timeout in milliseconds */
3717 hdr->plcp_threshold = htole16(1); /* min # of packets */
3719 /* select Ant B and Ant C for scanning */
3720 hdr->rxchain = htole16(0x3e1 | (7 << IWN_RXCHAIN_VALID_S));
3722 tx = (struct iwn_cmd_data *)(hdr + 1);
3723 memset(tx, 0, sizeof (struct iwn_cmd_data));
3724 tx->flags = htole32(IWN_TX_AUTO_SEQ | 0x200); /* XXX */
3725 tx->id = IWN_ID_BROADCAST;
3726 tx->lifetime = htole32(IWN_LIFETIME_INFINITE);
3727 tx->rflags = IWN_RFLAG_ANT_B;
3729 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
3730 hdr->crc_threshold = htole16(1);
3731 /* send probe requests at 6Mbps */
3732 tx->rate = iwn_ridx_to_plcp[IWN_RATE_OFDM6];
3734 hdr->flags = htole32(IWN_CONFIG_24GHZ | IWN_CONFIG_AUTO);
3735 /* send probe requests at 1Mbps */
3736 tx->rate = iwn_ridx_to_plcp[IWN_RATE_CCK1];
3737 tx->rflags |= IWN_RFLAG_CCK;
3740 essid = (struct iwn_scan_essid *)(tx + 1);
3741 memset(essid, 0, 4 * sizeof (struct iwn_scan_essid));
3742 essid[0].id = IEEE80211_ELEMID_SSID;
3743 essid[0].len = ss->ss_ssid[0].len;
3744 memcpy(essid[0].data, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
3747 * Build a probe request frame. Most of the following code is a
3748 * copy & paste of what is done in net80211.
3750 wh = (struct ieee80211_frame *)&essid[4];
3751 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
3752 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
3753 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
3754 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
3755 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
3756 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
3757 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
3758 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
3760 frm = (uint8_t *)(wh + 1);
3763 *frm++ = IEEE80211_ELEMID_SSID;
3764 *frm++ = ss->ss_ssid[0].len;
3765 memcpy(frm, ss->ss_ssid[0].ssid, ss->ss_ssid[0].len);
3766 frm += ss->ss_ssid[0].len;
3768 mode = ieee80211_chan2mode(ic->ic_curchan);
3769 rs = &ic->ic_sup_rates[mode];
3771 /* add supported rates IE */
3772 *frm++ = IEEE80211_ELEMID_RATES;
3773 nrates = rs->rs_nrates;
3774 if (nrates > IEEE80211_RATE_SIZE)
3775 nrates = IEEE80211_RATE_SIZE;
3777 memcpy(frm, rs->rs_rates, nrates);
3780 /* add supported xrates IE */
3781 if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
3782 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
3783 *frm++ = IEEE80211_ELEMID_XRATES;
3784 *frm++ = (uint8_t)nrates;
3785 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
3789 /* setup length of probe request */
3790 tx->len = htole16(frm - (uint8_t *)wh);
3793 chan = (struct iwn_scan_chan *)frm;
3794 chan->chan = ieee80211_chan2ieee(ic, c);
3796 if ((c->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) {
3797 chan->flags |= IWN_CHAN_ACTIVE;
3798 if (ss->ss_nssid > 0)
3799 chan->flags |= IWN_CHAN_DIRECT;
3801 chan->dsp_gain = 0x6e;
3802 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3803 chan->rf_gain = 0x3b;
3804 chan->active = htole16(10);
3805 chan->passive = htole16(110);
3807 chan->rf_gain = 0x28;
3808 chan->active = htole16(20);
3809 chan->passive = htole16(120);
3812 DPRINTF(sc, IWN_DEBUG_STATE, "%s: chan %u flags 0x%x rf_gain 0x%x "
3813 "dsp_gain 0x%x active 0x%x passive 0x%x\n", __func__,
3814 chan->chan, chan->flags, chan->rf_gain, chan->dsp_gain,
3815 chan->active, chan->passive);
3819 frm += sizeof (struct iwn_scan_chan);
3821 hdr->len = htole16(frm - (uint8_t *)hdr);
3822 pktlen = frm - (uint8_t *)cmd;
3824 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
3825 iwn_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
3827 device_printf(sc->sc_dev,
3828 "%s: could not map scan command, error %d\n",
3835 IWN_SET_DESC_NSEGS(desc, 1);
3836 IWN_SET_DESC_SEG(desc, 0, physaddr, pktlen);
3837 sc->shared->len[ring->qid][ring->cur] = htole16(8);
3838 if (ring->cur < IWN_TX_WINDOW)
3839 sc->shared->len[ring->qid][ring->cur + IWN_TX_RING_COUNT] =
3842 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
3843 BUS_DMASYNC_PREWRITE);
3844 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
3847 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
3848 IWN_WRITE(sc, IWN_TX_WIDX, ring->qid << 8 | ring->cur);
3850 return 0; /* will be notified async. of failure/success */
3854 iwn_config(struct iwn_softc *sc)
3856 struct ifnet *ifp = sc->sc_ifp;
3857 struct ieee80211com *ic = ifp->if_l2com;
3858 struct iwn_power power;
3859 struct iwn_bluetooth bluetooth;
3860 struct iwn_node_info node;
3863 /* set power mode */
3864 memset(&power, 0, sizeof power);
3865 power.flags = htole16(IWN_POWER_CAM | 0x8);
3866 DPRINTF(sc, IWN_DEBUG_RESET, "%s: set power mode\n", __func__);
3867 error = iwn_cmd(sc, IWN_CMD_SET_POWER_MODE, &power, sizeof power, 0);
3869 device_printf(sc->sc_dev,
3870 "%s: could not set power mode, error %d\n",
3875 /* configure bluetooth coexistence */
3876 memset(&bluetooth, 0, sizeof bluetooth);
3877 bluetooth.flags = 3;
3878 bluetooth.lead = 0xaa;
3880 DPRINTF(sc, IWN_DEBUG_RESET, "%s: config bluetooth coexistence\n",
3882 error = iwn_cmd(sc, IWN_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
3885 device_printf(sc->sc_dev,
3886 "%s: could not configure bluetooth coexistence, error %d\n",
3891 /* configure adapter */
3892 memset(&sc->config, 0, sizeof (struct iwn_config));
3893 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
3894 IEEE80211_ADDR_COPY(sc->config.wlap, IF_LLADDR(ifp));
3895 /* set default channel */
3896 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
3897 sc->config.flags = htole32(IWN_CONFIG_TSF);
3898 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
3899 sc->config.flags |= htole32(IWN_CONFIG_AUTO | IWN_CONFIG_24GHZ);
3900 sc->config.filter = 0;
3901 switch (ic->ic_opmode) {
3902 case IEEE80211_M_STA:
3903 sc->config.mode = IWN_MODE_STA;
3904 sc->config.filter |= htole32(IWN_FILTER_MULTICAST);
3906 case IEEE80211_M_IBSS:
3907 case IEEE80211_M_AHDEMO:
3908 sc->config.mode = IWN_MODE_IBSS;
3910 case IEEE80211_M_HOSTAP:
3911 sc->config.mode = IWN_MODE_HOSTAP;
3913 case IEEE80211_M_MONITOR:
3914 sc->config.mode = IWN_MODE_MONITOR;
3915 sc->config.filter |= htole32(IWN_FILTER_MULTICAST |
3916 IWN_FILTER_CTL | IWN_FILTER_PROMISC);
3919 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
3922 sc->config.cck_mask = 0x0f; /* not yet negotiated */
3923 sc->config.ofdm_mask = 0xff; /* not yet negotiated */
3924 sc->config.ht_single_mask = 0xff;
3925 sc->config.ht_dual_mask = 0xff;
3926 sc->config.rxchain = htole16(0x2800 | (7 << IWN_RXCHAIN_VALID_S));
3928 DPRINTF(sc, IWN_DEBUG_STATE,
3929 "%s: config chan %d mode %d flags 0x%x cck 0x%x ofdm 0x%x "
3930 "ht_single 0x%x ht_dual 0x%x rxchain 0x%x "
3931 "myaddr %6D wlap %6D bssid %6D associd %d filter 0x%x\n",
3933 le16toh(sc->config.chan), sc->config.mode, le32toh(sc->config.flags),
3934 sc->config.cck_mask, sc->config.ofdm_mask,
3935 sc->config.ht_single_mask, sc->config.ht_dual_mask,
3936 le16toh(sc->config.rxchain),
3937 sc->config.myaddr, ":", sc->config.wlap, ":", sc->config.bssid, ":",
3938 le16toh(sc->config.associd), le32toh(sc->config.filter));
3939 error = iwn_cmd(sc, IWN_CMD_CONFIGURE, &sc->config,
3940 sizeof (struct iwn_config), 0);
3942 device_printf(sc->sc_dev,
3943 "%s: configure command failed, error %d\n",
3947 sc->sc_curchan = ic->ic_curchan;
3949 /* configuration has changed, set Tx power accordingly */
3950 error = iwn_set_txpower(sc, ic->ic_curchan, 0);
3952 device_printf(sc->sc_dev,
3953 "%s: could not set Tx power, error %d\n", __func__, error);
3957 /* add broadcast node */
3958 memset(&node, 0, sizeof node);
3959 IEEE80211_ADDR_COPY(node.macaddr, ic->ic_ifp->if_broadcastaddr);
3960 node.id = IWN_ID_BROADCAST;
3961 node.rate = iwn_plcp_signal(2);
3962 DPRINTF(sc, IWN_DEBUG_RESET, "%s: add broadcast node\n", __func__);
3963 error = iwn_cmd(sc, IWN_CMD_ADD_NODE, &node, sizeof node, 0);
3965 device_printf(sc->sc_dev,
3966 "%s: could not add broadcast node, error %d\n",
3970 error = iwn_set_link_quality(sc, node.id, ic->ic_curchan, 0);
3972 device_printf(sc->sc_dev,
3973 "%s: could not setup MRR for node %d, error %d\n",
3974 __func__, node.id, error);
3978 error = iwn_set_critical_temp(sc);
3980 device_printf(sc->sc_dev,
3981 "%s: could not set critical temperature, error %d\n",
3989 * Do post-alive initialization of the NIC (after firmware upload).
3992 iwn_post_alive(struct iwn_softc *sc)
4001 base = iwn_mem_read(sc, IWN_SRAM_BASE);
4002 for (offset = 0x380; offset < 0x520; offset += 4) {
4003 IWN_WRITE(sc, IWN_MEM_WADDR, base + offset);
4004 IWN_WRITE(sc, IWN_MEM_WDATA, 0);
4007 /* shared area is aligned on a 1K boundary */
4008 iwn_mem_write(sc, IWN_SRAM_BASE, sc->shared_dma.paddr >> 10);
4009 iwn_mem_write(sc, IWN_SELECT_QCHAIN, 0);
4011 for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
4012 iwn_mem_write(sc, IWN_QUEUE_RIDX(qid), 0);
4013 IWN_WRITE(sc, IWN_TX_WIDX, qid << 8 | 0);
4015 /* set sched. window size */
4016 IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid));
4017 IWN_WRITE(sc, IWN_MEM_WDATA, 64);
4018 /* set sched. frame limit */
4019 IWN_WRITE(sc, IWN_MEM_WADDR, base + IWN_QUEUE_OFFSET(qid) + 4);
4020 IWN_WRITE(sc, IWN_MEM_WDATA, 10 << 16);
4023 /* enable interrupts for all 16 queues */
4024 iwn_mem_write(sc, IWN_QUEUE_INTR_MASK, 0xffff);
4026 /* identify active Tx rings (0-7) */
4027 iwn_mem_write(sc, IWN_TX_ACTIVE, 0xff);
4029 /* mark Tx rings (4 EDCA + cmd + 2 HCCA) as active */
4030 for (qid = 0; qid < 7; qid++) {
4031 iwn_mem_write(sc, IWN_TXQ_STATUS(qid),
4032 IWN_TXQ_STATUS_ACTIVE | qid << 1);
4039 iwn_stop_master(struct iwn_softc *sc)
4044 tmp = IWN_READ(sc, IWN_RESET);
4045 IWN_WRITE(sc, IWN_RESET, tmp | IWN_STOP_MASTER);
4047 tmp = IWN_READ(sc, IWN_GPIO_CTL);
4048 if ((tmp & IWN_GPIO_PWR_STATUS) == IWN_GPIO_PWR_SLEEP)
4049 return; /* already asleep */
4051 for (ntries = 0; ntries < 100; ntries++) {
4052 if (IWN_READ(sc, IWN_RESET) & IWN_MASTER_DISABLED)
4057 device_printf(sc->sc_dev,
4058 "%s: timeout waiting for master\n", __func__);
4062 iwn_reset(struct iwn_softc *sc)
4067 /* clear any pending interrupts */
4068 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4070 tmp = IWN_READ(sc, IWN_CHICKEN);
4071 IWN_WRITE(sc, IWN_CHICKEN, tmp | IWN_CHICKEN_DISLOS);
4073 tmp = IWN_READ(sc, IWN_GPIO_CTL);
4074 IWN_WRITE(sc, IWN_GPIO_CTL, tmp | IWN_GPIO_INIT);
4076 /* wait for clock stabilization */
4077 for (ntries = 0; ntries < 1000; ntries++) {
4078 if (IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_CLOCK)
4082 if (ntries == 1000) {
4083 device_printf(sc->sc_dev,
4084 "%s: timeout waiting for clock stabilization\n", __func__);
4091 iwn_hw_config(struct iwn_softc *sc)
4095 /* enable interrupts mitigation */
4096 IWN_WRITE(sc, IWN_INTR_MIT, 512 / 32);
4098 /* voodoo from the reference driver */
4099 tmp = pci_read_config(sc->sc_dev, PCIR_REVID,1);
4100 if ((tmp & 0x80) && (tmp & 0x7f) < 8) {
4101 /* enable "no snoop" field */
4102 tmp = pci_read_config(sc->sc_dev, 0xe8, 1);
4103 tmp &= ~IWN_DIS_NOSNOOP;
4104 /* clear device specific PCI configuration register 0x41 */
4105 pci_write_config(sc->sc_dev, 0xe8, tmp, 1);
4108 /* disable L1 entry to work around a hardware bug */
4109 tmp = pci_read_config(sc->sc_dev, 0xf0, 1);
4111 pci_write_config(sc->sc_dev, 0xf0, tmp, 1 );
4113 hw = IWN_READ(sc, IWN_HWCONFIG);
4114 IWN_WRITE(sc, IWN_HWCONFIG, hw | 0x310);
4117 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4118 iwn_mem_write(sc, IWN_MEM_POWER, tmp | IWN_POWER_RESET);
4120 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4121 iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~IWN_POWER_RESET);
4126 iwn_init_locked(struct iwn_softc *sc)
4128 struct ifnet *ifp = sc->sc_ifp;
4132 IWN_LOCK_ASSERT(sc);
4134 /* load the firmware */
4135 if (sc->fw_fp == NULL && (error = iwn_load_firmware(sc)) != 0) {
4136 device_printf(sc->sc_dev,
4137 "%s: could not load firmware, error %d\n", __func__, error);
4141 error = iwn_reset(sc);
4143 device_printf(sc->sc_dev,
4144 "%s: could not reset adapter, error %d\n", __func__, error);
4149 iwn_mem_read(sc, IWN_CLOCK_CTL);
4150 iwn_mem_write(sc, IWN_CLOCK_CTL, 0xa00);
4151 iwn_mem_read(sc, IWN_CLOCK_CTL);
4157 tmp = iwn_mem_read(sc, IWN_MEM_PCIDEV);
4158 iwn_mem_write(sc, IWN_MEM_PCIDEV, tmp | 0x800);
4162 tmp = iwn_mem_read(sc, IWN_MEM_POWER);
4163 iwn_mem_write(sc, IWN_MEM_POWER, tmp & ~0x03000000);
4170 IWN_WRITE(sc, IWN_RX_CONFIG, 0);
4171 IWN_WRITE(sc, IWN_RX_WIDX, 0);
4172 /* Rx ring is aligned on a 256-byte boundary */
4173 IWN_WRITE(sc, IWN_RX_BASE, sc->rxq.desc_dma.paddr >> 8);
4174 /* shared area is aligned on a 16-byte boundary */
4175 IWN_WRITE(sc, IWN_RW_WIDX_PTR, (sc->shared_dma.paddr +
4176 offsetof(struct iwn_shared, closed_count)) >> 4);
4177 IWN_WRITE(sc, IWN_RX_CONFIG, 0x80601000);
4180 IWN_WRITE(sc, IWN_RX_WIDX, (IWN_RX_RING_COUNT - 1) & ~7);
4183 iwn_mem_write(sc, IWN_TX_ACTIVE, 0);
4185 /* set physical address of "keep warm" page */
4186 IWN_WRITE(sc, IWN_KW_BASE, sc->kw_dma.paddr >> 4);
4189 for (qid = 0; qid < IWN_NTXQUEUES; qid++) {
4190 struct iwn_tx_ring *txq = &sc->txq[qid];
4191 IWN_WRITE(sc, IWN_TX_BASE(qid), txq->desc_dma.paddr >> 8);
4192 IWN_WRITE(sc, IWN_TX_CONFIG(qid), 0x80000008);
4196 /* clear "radio off" and "disable command" bits (reversed logic) */
4197 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4198 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_DISABLE_CMD);
4200 /* clear any pending interrupts */
4201 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4202 /* enable interrupts */
4203 IWN_WRITE(sc, IWN_MASK, IWN_INTR_MASK);
4205 /* not sure why/if this is necessary... */
4206 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4207 IWN_WRITE(sc, IWN_UCODE_CLR, IWN_RADIO_OFF);
4209 /* check that the radio is not disabled by RF switch */
4210 if (!(IWN_READ(sc, IWN_GPIO_CTL) & IWN_GPIO_RF_ENABLED)) {
4211 device_printf(sc->sc_dev,
4212 "radio is disabled by hardware switch\n");
4216 error = iwn_transfer_firmware(sc);
4218 device_printf(sc->sc_dev,
4219 "%s: could not load firmware, error %d\n", __func__, error);
4223 /* firmware has notified us that it is alive.. */
4224 iwn_post_alive(sc); /* ..do post alive initialization */
4226 sc->rawtemp = sc->ucode_info.temp[3].chan20MHz;
4227 sc->temp = iwn_get_temperature(sc);
4228 DPRINTF(sc, IWN_DEBUG_RESET, "%s: temperature=%d\n",
4229 __func__, sc->temp);
4231 error = iwn_config(sc);
4233 device_printf(sc->sc_dev,
4234 "%s: could not configure device, error %d\n",
4239 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
4240 ifp->if_drv_flags |= IFF_DRV_RUNNING;
4246 struct iwn_softc *sc = arg;
4247 struct ifnet *ifp = sc->sc_ifp;
4248 struct ieee80211com *ic = ifp->if_l2com;
4251 iwn_init_locked(sc);
4254 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
4255 ieee80211_start_all(ic);
4259 iwn_stop_locked(struct iwn_softc *sc)
4261 struct ifnet *ifp = sc->sc_ifp;
4265 IWN_LOCK_ASSERT(sc);
4267 IWN_WRITE(sc, IWN_RESET, IWN_NEVO_RESET);
4269 sc->sc_tx_timer = 0;
4270 callout_stop(&sc->sc_timer_to);
4271 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
4273 /* disable interrupts */
4274 IWN_WRITE(sc, IWN_MASK, 0);
4275 IWN_WRITE(sc, IWN_INTR, 0xffffffff);
4276 IWN_WRITE(sc, IWN_INTR_STATUS, 0xffffffff);
4278 /* reset all Tx rings */
4279 for (i = 0; i < IWN_NTXQUEUES; i++)
4280 iwn_reset_tx_ring(sc, &sc->txq[i]);
4283 iwn_reset_rx_ring(sc, &sc->rxq);
4286 iwn_mem_write(sc, IWN_MEM_CLOCK2, 0x200);
4290 iwn_stop_master(sc);
4292 tmp = IWN_READ(sc, IWN_RESET);
4293 IWN_WRITE(sc, IWN_RESET, tmp | IWN_SW_RESET);
4297 iwn_stop(struct iwn_softc *sc)
4300 iwn_stop_locked(sc);
4305 * Callback from net80211 to start a scan.
4308 iwn_scan_start(struct ieee80211com *ic)
4310 struct ifnet *ifp = ic->ic_ifp;
4311 struct iwn_softc *sc = ifp->if_softc;
4314 /* make the link LED blink while we're scanning */
4315 iwn_set_led(sc, IWN_LED_LINK, 20, 2);
4320 * Callback from net80211 to terminate a scan.
4323 iwn_scan_end(struct ieee80211com *ic)
4329 * Callback from net80211 to force a channel change.
4332 iwn_set_channel(struct ieee80211com *ic)
4334 struct ifnet *ifp = ic->ic_ifp;
4335 struct iwn_softc *sc = ifp->if_softc;
4336 struct ieee80211vap *vap;
4337 const struct ieee80211_channel *c = ic->ic_curchan;
4340 vap = TAILQ_FIRST(&ic->ic_vaps); /* XXX */
4343 if (c != sc->sc_curchan) {
4344 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq);
4345 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags);
4346 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq);
4347 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags);
4349 error = iwn_config(sc);
4351 DPRINTF(sc, IWN_DEBUG_STATE,
4352 "%s: set chan failed, cancel scan\n",
4354 //XXX Handle failed scan correctly
4355 ieee80211_cancel_scan(vap);
4362 * Callback from net80211 to start scanning of the current channel.
4365 iwn_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
4367 struct ieee80211vap *vap = ss->ss_vap;
4368 struct iwn_softc *sc = vap->iv_ic->ic_ifp->if_softc;
4372 error = iwn_scan(sc);
4375 ieee80211_cancel_scan(vap);
4379 * Callback from net80211 to handle the minimum dwell time being met.
4380 * The intent is to terminate the scan but we just let the firmware
4381 * notify us when it's finished as we have no safe way to abort it.
4384 iwn_scan_mindwell(struct ieee80211_scan_state *ss)
4386 /* NB: don't try to abort scan; wait for firmware to finish */
4390 iwn_hwreset(void *arg0, int pending)
4392 struct iwn_softc *sc = arg0;
4393 struct ifnet *ifp = sc->sc_ifp;
4394 struct ieee80211com *ic = ifp->if_l2com;
4397 ieee80211_notify_radio(ic, 1);
4401 iwn_radioon(void *arg0, int pending)
4403 struct iwn_softc *sc = arg0;
4409 iwn_radiooff(void *arg0, int pending)
4411 struct iwn_softc *sc = arg0;
4412 struct ifnet *ifp = sc->sc_ifp;
4413 struct ieee80211com *ic = ifp->if_l2com;
4416 ieee80211_notify_radio(ic, 0);
4417 iwn_stop_locked(sc);
4422 iwn_sysctlattach(struct iwn_softc *sc)
4424 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
4425 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
4429 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
4430 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "control debugging printfs");
4436 iwn_intr_str(uint8_t cmd)
4440 case IWN_UC_READY: return "UC_READY";
4441 case IWN_ADD_NODE_DONE: return "ADD_NODE_DONE";
4442 case IWN_TX_DONE: return "TX_DONE";
4443 case IWN_START_SCAN: return "START_SCAN";
4444 case IWN_STOP_SCAN: return "STOP_SCAN";
4445 case IWN_RX_STATISTICS: return "RX_STATS";
4446 case IWN_BEACON_STATISTICS: return "BEACON_STATS";
4447 case IWN_STATE_CHANGED: return "STATE_CHANGED";
4448 case IWN_BEACON_MISSED: return "BEACON_MISSED";
4449 case IWN_AMPDU_RX_START: return "AMPDU_RX_START";
4450 case IWN_AMPDU_RX_DONE: return "AMPDU_RX_DONE";
4451 case IWN_RX_DONE: return "RX_DONE";
4453 /* Command Notifications */
4454 case IWN_CMD_CONFIGURE: return "IWN_CMD_CONFIGURE";
4455 case IWN_CMD_ASSOCIATE: return "IWN_CMD_ASSOCIATE";
4456 case IWN_CMD_EDCA_PARAMS: return "IWN_CMD_EDCA_PARAMS";
4457 case IWN_CMD_TSF: return "IWN_CMD_TSF";
4458 case IWN_CMD_TX_LINK_QUALITY: return "IWN_CMD_TX_LINK_QUALITY";
4459 case IWN_CMD_SET_LED: return "IWN_CMD_SET_LED";
4460 case IWN_CMD_SET_POWER_MODE: return "IWN_CMD_SET_POWER_MODE";
4461 case IWN_CMD_SCAN: return "IWN_CMD_SCAN";
4462 case IWN_CMD_TXPOWER: return "IWN_CMD_TXPOWER";
4463 case IWN_CMD_BLUETOOTH: return "IWN_CMD_BLUETOOTH";
4464 case IWN_CMD_SET_CRITICAL_TEMP: return "IWN_CMD_SET_CRITICAL_TEMP";
4465 case IWN_SENSITIVITY: return "IWN_SENSITIVITY";
4466 case IWN_PHY_CALIB: return "IWN_PHY_CALIB";
4468 return "UNKNOWN INTR NOTIF/CMD";
4470 #endif /* IWN_DEBUG */
4472 static device_method_t iwn_methods[] = {
4473 /* Device interface */
4474 DEVMETHOD(device_probe, iwn_probe),
4475 DEVMETHOD(device_attach, iwn_attach),
4476 DEVMETHOD(device_detach, iwn_detach),
4477 DEVMETHOD(device_shutdown, iwn_shutdown),
4478 DEVMETHOD(device_suspend, iwn_suspend),
4479 DEVMETHOD(device_resume, iwn_resume),
4484 static driver_t iwn_driver = {
4487 sizeof (struct iwn_softc)
4489 static devclass_t iwn_devclass;
4490 DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, 0, 0);
4491 MODULE_DEPEND(iwn, pci, 1, 1, 1);
4492 MODULE_DEPEND(iwn, firmware, 1, 1, 1);
4493 MODULE_DEPEND(iwn, wlan, 1, 1, 1);
4494 MODULE_DEPEND(iwn, wlan_amrr, 1, 1, 1);