2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/kernel.h>
17 #include <linux/ctype.h>
18 #include <linux/etherdevice.h>
19 #include <linux/pci_ids.h>
20 #include <net/mac80211.h>
35 #include "wlc_types.h"
41 #include "wlc_bsscfg.h"
42 #include "phy/wlc_phy_hal.h"
43 #include "wlc_channel.h"
46 #include "wlc_phy_hal.h"
47 #include "wlc_antsel.h"
49 #include "wlc_ampdu.h"
50 #include "wl_export.h"
51 #include "wlc_alloc.h"
53 #include "wl_mac80211.h"
58 #define RSN_CAP_4_REPLAY_CNTRS 2
59 #define RSN_CAP_16_REPLAY_CNTRS 3
61 #define WPA_CAP_4_REPLAY_CNTRS RSN_CAP_4_REPLAY_CNTRS
62 #define WPA_CAP_16_REPLAY_CNTRS RSN_CAP_16_REPLAY_CNTRS
65 * Indication for txflowcontrol that all priority bits in
66 * TXQ_STOP_FOR_PRIOFC_MASK are to be considered.
71 * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
73 #define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
75 #define TIMER_INTERVAL_WATCHDOG 1000 /* watchdog timer, in unit of ms */
76 #define TIMER_INTERVAL_RADIOCHK 800 /* radio monitor timer, in unit of ms */
78 #ifndef WLC_MPC_MAX_DELAYCNT
79 #define WLC_MPC_MAX_DELAYCNT 10 /* Max MPC timeout, in unit of watchdog */
81 #define WLC_MPC_MIN_DELAYCNT 1 /* Min MPC timeout, in unit of watchdog */
82 #define WLC_MPC_THRESHOLD 3 /* MPC count threshold level */
84 #define BEACON_INTERVAL_DEFAULT 100 /* beacon interval, in unit of 1024TU */
85 #define DTIM_INTERVAL_DEFAULT 3 /* DTIM interval, in unit of beacon interval */
87 /* Scale down delays to accommodate QT slow speed */
88 #define BEACON_INTERVAL_DEF_QT 20 /* beacon interval, in unit of 1024TU */
89 #define DTIM_INTERVAL_DEF_QT 1 /* DTIM interval, in unit of beacon interval */
91 #define TBTT_ALIGN_LEEWAY_US 100 /* min leeway before first TBTT in us */
93 /* Software feature flag defines used by wlfeatureflag */
94 #define WL_SWFL_NOHWRADIO 0x0004
95 #define WL_SWFL_FLOWCONTROL 0x0008 /* Enable backpressure to OS stack */
96 #define WL_SWFL_WLBSSSORT 0x0010 /* Per-port supports sorting of BSS */
98 /* n-mode support capability */
99 /* 2x2 includes both 1x1 & 2x2 devices
100 * reserved #define 2 for future when we want to separate 1x1 & 2x2 and
101 * control it independently
107 /* define 11n feature disable flags */
108 #define WLFEATURE_DISABLE_11N 0x00000001
109 #define WLFEATURE_DISABLE_11N_STBC_TX 0x00000002
110 #define WLFEATURE_DISABLE_11N_STBC_RX 0x00000004
111 #define WLFEATURE_DISABLE_11N_SGI_TX 0x00000008
112 #define WLFEATURE_DISABLE_11N_SGI_RX 0x00000010
113 #define WLFEATURE_DISABLE_11N_AMPDU_TX 0x00000020
114 #define WLFEATURE_DISABLE_11N_AMPDU_RX 0x00000040
115 #define WLFEATURE_DISABLE_11N_GF 0x00000080
118 * driver maintains internal 'tick'(wlc->pub->now) which increments in 1s OS timer(soft
119 * watchdog) it is not a wall clock and won't increment when driver is in "down" state
120 * this low resolution driver tick can be used for maintenance tasks such as phy
121 * calibration and scb update
124 /* To inform the ucode of the last mcast frame posted so that it can clear moredata bit */
125 #define BCMCFID(wlc, fid) wlc_bmac_write_shm((wlc)->hw, M_BCMC_FID, (fid))
127 #define WLC_WAR16165(wlc) (wlc->pub->sih->bustype == PCI_BUS && \
128 (!AP_ENAB(wlc->pub)) && (wlc->war16165))
138 /* Find basic rate for a given rate */
139 #define WLC_BASIC_RATE(wlc, rspec) (IS_MCS(rspec) ? \
140 (wlc)->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK].leg_ofdm] : \
141 (wlc)->band->basic_rate[rspec & RSPEC_RATE_MASK])
143 #define FRAMETYPE(r, mimoframe) (IS_MCS(r) ? mimoframe : (IS_CCK(r) ? FT_CCK : FT_OFDM))
145 #define RFDISABLE_DEFAULT 10000000 /* rfdisable delay timer 500 ms, runs of ALP clock */
147 #define WLC_TEMPSENSE_PERIOD 10 /* 10 second timeout */
149 #define SCAN_IN_PROGRESS(x) 0
151 #define EPI_VERSION_NUM 0x054b0b00
154 /* pointer to most recently allocated wl/wlc */
155 static struct wlc_info *wlc_info_dbg = (struct wlc_info *) (NULL);
158 const u8 prio2fifo[NUMPRIO] = {
159 TX_AC_BE_FIFO, /* 0 BE AC_BE Best Effort */
160 TX_AC_BK_FIFO, /* 1 BK AC_BK Background */
161 TX_AC_BK_FIFO, /* 2 -- AC_BK Background */
162 TX_AC_BE_FIFO, /* 3 EE AC_BE Best Effort */
163 TX_AC_VI_FIFO, /* 4 CL AC_VI Video */
164 TX_AC_VI_FIFO, /* 5 VI AC_VI Video */
165 TX_AC_VO_FIFO, /* 6 VO AC_VO Voice */
166 TX_AC_VO_FIFO /* 7 NC AC_VO Voice */
169 /* precedences numbers for wlc queues. These are twice as may levels as
171 * Odd numbers are used for HI priority traffic at same precedence levels
172 * These constants are used ONLY by wlc_prio2prec_map. Do not use them elsewhere.
174 #define _WLC_PREC_NONE 0 /* None = - */
175 #define _WLC_PREC_BK 2 /* BK - Background */
176 #define _WLC_PREC_BE 4 /* BE - Best-effort */
177 #define _WLC_PREC_EE 6 /* EE - Excellent-effort */
178 #define _WLC_PREC_CL 8 /* CL - Controlled Load */
179 #define _WLC_PREC_VI 10 /* Vi - Video */
180 #define _WLC_PREC_VO 12 /* Vo - Voice */
181 #define _WLC_PREC_NC 14 /* NC - Network Control */
183 /* 802.1D Priority to precedence queue mapping */
184 const u8 wlc_prio2prec_map[] = {
185 _WLC_PREC_BE, /* 0 BE - Best-effort */
186 _WLC_PREC_BK, /* 1 BK - Background */
187 _WLC_PREC_NONE, /* 2 None = - */
188 _WLC_PREC_EE, /* 3 EE - Excellent-effort */
189 _WLC_PREC_CL, /* 4 CL - Controlled Load */
190 _WLC_PREC_VI, /* 5 Vi - Video */
191 _WLC_PREC_VO, /* 6 Vo - Voice */
192 _WLC_PREC_NC, /* 7 NC - Network Control */
195 /* Sanity check for tx_prec_map and fifo synchup
196 * Either there are some packets pending for the fifo, else if fifo is empty then
197 * all the corresponding precmap bits should be set
199 #define WLC_TX_FIFO_CHECK(wlc, fifo) (TXPKTPENDGET((wlc), (fifo)) || \
200 (TXPKTPENDGET((wlc), (fifo)) == 0 && \
201 ((wlc)->tx_prec_map & (wlc)->fifo2prec_map[(fifo)]) == \
202 (wlc)->fifo2prec_map[(fifo)]))
204 /* TX FIFO number to WME/802.1E Access Category */
205 const u8 wme_fifo2ac[] = { AC_BK, AC_BE, AC_VI, AC_VO, AC_BE, AC_BE };
207 /* WME/802.1E Access Category to TX FIFO number */
208 static const u8 wme_ac2fifo[] = { 1, 0, 2, 3 };
210 static bool in_send_q = false;
212 /* Shared memory location index for various AC params */
213 #define wme_shmemacindex(ac) wme_ac2fifo[ac]
216 static const char *fifo_names[] = {
217 "AC_BK", "AC_BE", "AC_VI", "AC_VO", "BCMC", "ATIM" };
219 static const char fifo_names[6][0];
222 static const u8 acbitmap2maxprio[] = {
223 PRIO_8021D_BE, PRIO_8021D_BE, PRIO_8021D_BK, PRIO_8021D_BK,
224 PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI,
225 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO,
226 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO
229 /* currently the best mechanism for determining SIFS is the band in use */
230 #define SIFS(band) ((band)->bandtype == WLC_BAND_5G ? APHY_SIFS_TIME : BPHY_SIFS_TIME);
232 /* value for # replay counters currently supported */
233 #define WLC_REPLAY_CNTRS_VALUE WPA_CAP_16_REPLAY_CNTRS
235 /* local prototypes */
236 static u16 wlc_d11hdrs_mac80211(struct wlc_info *wlc,
237 struct ieee80211_hw *hw,
239 struct scb *scb, uint frag,
240 uint nfrags, uint queue,
243 ratespec_t rspec_override);
244 static void wlc_bss_default_init(struct wlc_info *wlc);
245 static void wlc_ucode_mac_upd(struct wlc_info *wlc);
246 static ratespec_t mac80211_wlc_set_nrate(struct wlc_info *wlc,
247 struct wlcband *cur_band, u32 int_val);
248 static void wlc_tx_prec_map_init(struct wlc_info *wlc);
249 static void wlc_watchdog(void *arg);
250 static void wlc_watchdog_by_timer(void *arg);
251 static u16 wlc_rate_shm_offset(struct wlc_info *wlc, u8 rate);
252 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg);
253 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc);
255 /* send and receive */
256 static struct wlc_txq_info *wlc_txq_alloc(struct wlc_info *wlc);
257 static void wlc_txq_free(struct wlc_info *wlc,
258 struct wlc_txq_info *qi);
259 static void wlc_txflowcontrol_signal(struct wlc_info *wlc,
260 struct wlc_txq_info *qi,
262 static void wlc_txflowcontrol_reset(struct wlc_info *wlc);
263 static void wlc_compute_cck_plcp(struct wlc_info *wlc, ratespec_t rate,
264 uint length, u8 *plcp);
265 static void wlc_compute_ofdm_plcp(ratespec_t rate, uint length, u8 *plcp);
266 static void wlc_compute_mimo_plcp(ratespec_t rate, uint length, u8 *plcp);
267 static u16 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate,
268 u8 preamble_type, uint next_frag_len);
269 static u64 wlc_recover_tsf64(struct wlc_info *wlc, struct wlc_d11rxhdr *rxh);
270 static void wlc_recvctl(struct wlc_info *wlc,
271 d11rxhdr_t *rxh, struct sk_buff *p);
272 static uint wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t rate,
273 u8 preamble_type, uint dur);
274 static uint wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rate,
276 static uint wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rate,
278 /* interrupt, up/down, band */
279 static void wlc_setband(struct wlc_info *wlc, uint bandunit);
280 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc);
281 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec);
282 static void wlc_bsinit(struct wlc_info *wlc);
283 static int wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
285 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc);
286 static bool wlc_radio_monitor_start(struct wlc_info *wlc);
287 static void wlc_radio_timer(void *arg);
288 static void wlc_radio_enable(struct wlc_info *wlc);
289 static void wlc_radio_upd(struct wlc_info *wlc);
291 /* scan, association, BSS */
292 static uint wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rate,
294 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap);
295 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val);
296 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val);
297 static void wlc_war16165(struct wlc_info *wlc, bool tx);
299 static void wlc_wme_retries_write(struct wlc_info *wlc);
300 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc);
301 static uint wlc_attach_module(struct wlc_info *wlc);
302 static void wlc_detach_module(struct wlc_info *wlc);
303 static void wlc_timers_deinit(struct wlc_info *wlc);
304 static void wlc_down_led_upd(struct wlc_info *wlc);
305 static uint wlc_down_del_timer(struct wlc_info *wlc);
306 static void wlc_ofdm_rateset_war(struct wlc_info *wlc);
307 static int _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
308 struct wlc_if *wlcif);
310 /* conditions under which the PM bit should be set in outgoing frames and STAY_AWAKE is meaningful
312 bool wlc_ps_allowed(struct wlc_info *wlc)
315 struct wlc_bsscfg *cfg;
317 /* disallow PS when one of the following global conditions meets */
318 if (!wlc->pub->associated)
321 /* disallow PS when one of these meets when not scanning */
322 if (AP_ACTIVE(wlc) || wlc->monitor)
325 FOREACH_AS_STA(wlc, idx, cfg) {
326 /* disallow PS when one of the following bsscfg specific conditions meets */
327 if (!cfg->BSS || !WLC_PORTOPEN(cfg))
330 if (!cfg->dtim_programmed)
337 void wlc_reset(struct wlc_info *wlc)
339 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
341 /* slurp up hw mac counters before core reset */
344 /* reset our snapshot of macstat counters */
345 memset((char *)wlc->core->macstat_snapshot, 0,
348 wlc_bmac_reset(wlc->hw);
351 void wlc_fatal_error(struct wlc_info *wlc)
353 wiphy_err(wlc->wiphy, "wl%d: fatal error, reinitializing\n",
358 /* Return the channel the driver should initialize during wlc_init.
359 * the channel may have to be changed from the currently configured channel
360 * if other configurations are in conflict (bandlocked, 11n mode disabled,
361 * invalid channel for current country, etc.)
363 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc)
365 chanspec_t chanspec =
366 1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
372 struct scb global_scb;
374 static void wlc_init_scb(struct wlc_info *wlc, struct scb *scb)
377 scb->flags = SCB_WMECAP | SCB_HTCAP;
378 for (i = 0; i < NUMPRIO; i++)
382 void wlc_init(struct wlc_info *wlc)
387 struct wlc_bsscfg *bsscfg;
390 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
394 /* This will happen if a big-hammer was executed. In that case, we want to go back
395 * to the channel that we were on and not new channel
397 if (wlc->pub->associated)
398 chanspec = wlc->home_chanspec;
400 chanspec = wlc_init_chanspec(wlc);
402 wlc_bmac_init(wlc->hw, chanspec, mute);
404 /* update beacon listen interval */
407 /* the world is new again, so is our reported rate */
408 wlc_reprate_init(wlc);
410 /* write ethernet address to core */
411 FOREACH_BSS(wlc, i, bsscfg) {
413 wlc_set_bssid(bsscfg);
416 /* Update tsf_cfprep if associated and up */
417 if (wlc->pub->associated) {
418 FOREACH_BSS(wlc, i, bsscfg) {
422 /* get beacon period and convert to uS */
423 bi = bsscfg->current_bss->beacon_period << 10;
425 * update since init path would reset
428 W_REG(®s->tsf_cfprep,
429 (bi << CFPREP_CBI_SHIFT));
431 /* Update maccontrol PM related bits */
432 wlc_set_ps_ctrl(wlc);
439 wlc_key_hw_init_all(wlc);
441 wlc_bandinit_ordered(wlc, chanspec);
443 wlc_init_scb(wlc, &global_scb);
445 /* init probe response timeout */
446 wlc_write_shm(wlc, M_PRS_MAXTIME, wlc->prb_resp_timeout);
448 /* init max burst txop (framebursting) */
449 wlc_write_shm(wlc, M_MBURST_TXOP,
451 _rifs ? (EDCF_AC_VO_TXOP_AP << 5) : MAXFRAMEBURST_TXOP));
453 /* initialize maximum allowed duty cycle */
454 wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_ofdm, true, true);
455 wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_cck, false, true);
457 /* Update some shared memory locations related to max AMPDU size allowed to received */
458 wlc_ampdu_shm_upd(wlc->ampdu);
460 /* band-specific inits */
463 /* Enable EDCF mode (while the MAC is suspended) */
464 if (EDCF_ENAB(wlc->pub)) {
465 OR_REG(®s->ifs_ctl, IFS_USEEDCF);
466 wlc_edcf_setparams(wlc, false);
469 /* Init precedence maps for empty FIFOs */
470 wlc_tx_prec_map_init(wlc);
472 /* read the ucode version if we have not yet done so */
473 if (wlc->ucode_rev == 0) {
475 wlc_read_shm(wlc, M_BOM_REV_MAJOR) << NBITS(u16);
476 wlc->ucode_rev |= wlc_read_shm(wlc, M_BOM_REV_MINOR);
479 /* ..now really unleash hell (allow the MAC out of suspend) */
482 /* clear tx flow control */
483 wlc_txflowcontrol_reset(wlc);
485 /* clear tx data fifo suspends */
486 wlc->tx_suspended = false;
488 /* enable the RF Disable Delay timer */
489 W_REG(&wlc->regs->rfdisabledly, RFDISABLE_DEFAULT);
491 /* initialize mpc delay */
492 wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
495 * Initialize WME parameters; if they haven't been set by some other
496 * mechanism (IOVar, etc) then read them from the hardware.
498 if (WLC_WME_RETRY_SHORT_GET(wlc, 0) == 0) { /* Uninitialized; read from HW */
501 for (ac = 0; ac < AC_COUNT; ac++) {
502 wlc->wme_retries[ac] =
503 wlc_read_shm(wlc, M_AC_TXLMT_ADDR(ac));
508 void wlc_mac_bcn_promisc_change(struct wlc_info *wlc, bool promisc)
510 wlc->bcnmisc_monitor = promisc;
511 wlc_mac_bcn_promisc(wlc);
514 void wlc_mac_bcn_promisc(struct wlc_info *wlc)
516 if ((AP_ENAB(wlc->pub) && (N_ENAB(wlc->pub) || wlc->band->gmode)) ||
517 wlc->bcnmisc_ibss || wlc->bcnmisc_scan || wlc->bcnmisc_monitor)
518 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, MCTL_BCNS_PROMISC);
520 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, 0);
523 /* set or clear maccontrol bits MCTL_PROMISC and MCTL_KEEPCONTROL */
524 void wlc_mac_promisc(struct wlc_info *wlc)
526 u32 promisc_bits = 0;
528 /* promiscuous mode just sets MCTL_PROMISC
529 * Note: APs get all BSS traffic without the need to set the MCTL_PROMISC bit
530 * since all BSS data traffic is directed at the AP
532 if (PROMISC_ENAB(wlc->pub) && !AP_ENAB(wlc->pub))
533 promisc_bits |= MCTL_PROMISC;
535 /* monitor mode needs both MCTL_PROMISC and MCTL_KEEPCONTROL
536 * Note: monitor mode also needs MCTL_BCNS_PROMISC, but that is
537 * handled in wlc_mac_bcn_promisc()
539 if (MONITOR_ENAB(wlc))
540 promisc_bits |= MCTL_PROMISC | MCTL_KEEPCONTROL;
542 wlc_mctrl(wlc, MCTL_PROMISC | MCTL_KEEPCONTROL, promisc_bits);
545 /* push sw hps and wake state through hardware */
546 void wlc_set_ps_ctrl(struct wlc_info *wlc)
552 hps = PS_ALLOWED(wlc);
554 BCMMSG(wlc->wiphy, "wl%d: hps %d\n", wlc->pub->unit, hps);
556 v1 = R_REG(&wlc->regs->maccontrol);
561 wlc_mctrl(wlc, MCTL_WAKE | MCTL_HPS, v2);
563 awake_before = ((v1 & MCTL_WAKE) || ((v1 & MCTL_HPS) == 0));
566 wlc_bmac_wait_for_wake(wlc->hw);
571 * Write this BSS config's MAC address to core.
572 * Updates RXE match engine.
574 int wlc_set_mac(struct wlc_bsscfg *cfg)
577 struct wlc_info *wlc = cfg->wlc;
579 if (cfg == wlc->cfg) {
580 /* enter the MAC addr into the RXE match registers */
581 wlc_set_addrmatch(wlc, RCM_MAC_OFFSET, cfg->cur_etheraddr);
584 wlc_ampdu_macaddr_upd(wlc);
589 /* Write the BSS config's BSSID address to core (set_bssid in d11procs.tcl).
590 * Updates RXE match engine.
592 void wlc_set_bssid(struct wlc_bsscfg *cfg)
594 struct wlc_info *wlc = cfg->wlc;
596 /* if primary config, we need to update BSSID in RXE match registers */
597 if (cfg == wlc->cfg) {
598 wlc_set_addrmatch(wlc, RCM_BSSID_OFFSET, cfg->BSSID);
600 #ifdef SUPPORT_HWKEYS
601 else if (BSSCFG_STA(cfg) && cfg->BSS) {
602 wlc_rcmta_add_bssid(wlc, cfg);
608 * Suspend the the MAC and update the slot timing
609 * for standard 11b/g (20us slots) or shortslot 11g (9us slots).
611 void wlc_switch_shortslot(struct wlc_info *wlc, bool shortslot)
614 struct wlc_bsscfg *cfg;
616 /* use the override if it is set */
617 if (wlc->shortslot_override != WLC_SHORTSLOT_AUTO)
618 shortslot = (wlc->shortslot_override == WLC_SHORTSLOT_ON);
620 if (wlc->shortslot == shortslot)
623 wlc->shortslot = shortslot;
625 /* update the capability based on current shortslot mode */
626 FOREACH_BSS(wlc, idx, cfg) {
627 if (!cfg->associated)
629 cfg->current_bss->capability &=
630 ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
632 cfg->current_bss->capability |=
633 WLAN_CAPABILITY_SHORT_SLOT_TIME;
636 wlc_bmac_set_shortslot(wlc->hw, shortslot);
639 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc)
644 local = WLC_TXPWR_MAX;
645 if (wlc->pub->associated &&
646 (bcm_chspec_ctlchan(wlc->chanspec) ==
647 bcm_chspec_ctlchan(wlc->home_chanspec))) {
649 /* get the local power constraint if we are on the AP's
650 * channel [802.11h, 7.3.2.13]
652 /* Clamp the value between 0 and WLC_TXPWR_MAX w/o overflowing the target */
654 (wlc->txpwr_local_max -
655 wlc->txpwr_local_constraint) * WLC_TXPWR_DB_FACTOR;
656 if (local_max > 0 && local_max < WLC_TXPWR_MAX)
657 return (u8) local_max;
665 /* propagate home chanspec to all bsscfgs in case bsscfg->current_bss->chanspec is referenced */
666 void wlc_set_home_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
668 if (wlc->home_chanspec != chanspec) {
670 struct wlc_bsscfg *cfg;
672 wlc->home_chanspec = chanspec;
674 FOREACH_BSS(wlc, idx, cfg) {
675 if (!cfg->associated)
678 cfg->current_bss->chanspec = chanspec;
684 static void wlc_set_phy_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
686 /* Save our copy of the chanspec */
687 wlc->chanspec = chanspec;
689 /* Set the chanspec and power limits for this locale after computing
690 * any 11h local tx power constraints.
692 wlc_channel_set_chanspec(wlc->cmi, chanspec,
693 wlc_local_constraint_qdbm(wlc));
695 if (wlc->stf->ss_algosel_auto)
696 wlc_stf_ss_algo_channel_get(wlc, &wlc->stf->ss_algo_channel,
699 wlc_stf_ss_update(wlc, wlc->band);
703 void wlc_set_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
706 bool switchband = false;
707 chanspec_t old_chanspec = wlc->chanspec;
709 if (!wlc_valid_chanspec_db(wlc->cmi, chanspec)) {
710 wiphy_err(wlc->wiphy, "wl%d: %s: Bad channel %d\n",
711 wlc->pub->unit, __func__, CHSPEC_CHANNEL(chanspec));
715 /* Switch bands if necessary */
716 if (NBANDS(wlc) > 1) {
717 bandunit = CHSPEC_WLCBANDUNIT(chanspec);
718 if (wlc->band->bandunit != bandunit || wlc->bandinit_pending) {
720 if (wlc->bandlocked) {
721 wiphy_err(wlc->wiphy, "wl%d: %s: chspec %d "
723 wlc->pub->unit, __func__,
724 CHSPEC_CHANNEL(chanspec));
727 /* BMAC_NOTE: should the setband call come after the wlc_bmac_chanspec() ?
728 * if the setband updates (wlc_bsinit) use low level calls to inspect and
729 * set state, the state inspected may be from the wrong band, or the
730 * following wlc_bmac_set_chanspec() may undo the work.
732 wlc_setband(wlc, bandunit);
736 /* sync up phy/radio chanspec */
737 wlc_set_phy_chanspec(wlc, chanspec);
739 /* init antenna selection */
740 if (CHSPEC_WLC_BW(old_chanspec) != CHSPEC_WLC_BW(chanspec)) {
741 wlc_antsel_init(wlc->asi);
743 /* Fix the hardware rateset based on bw.
744 * Mainly add MCS32 for 40Mhz, remove MCS 32 for 20Mhz
746 wlc_rateset_bw_mcs_filter(&wlc->band->hw_rateset,
748 mimo_cap_40 ? CHSPEC_WLC_BW(chanspec)
752 /* update some mac configuration since chanspec changed */
753 wlc_ucode_mac_upd(wlc);
756 ratespec_t wlc_lowest_basic_rspec(struct wlc_info *wlc, wlc_rateset_t *rs)
758 ratespec_t lowest_basic_rspec;
761 /* Use the lowest basic rate */
762 lowest_basic_rspec = rs->rates[0] & WLC_RATE_MASK;
763 for (i = 0; i < rs->count; i++) {
764 if (rs->rates[i] & WLC_RATE_FLAG) {
765 lowest_basic_rspec = rs->rates[i] & WLC_RATE_MASK;
770 /* pick siso/cdd as default for OFDM (note no basic rate MCSs are supported yet) */
771 if (IS_OFDM(lowest_basic_rspec)) {
772 lowest_basic_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
776 return lowest_basic_rspec;
779 /* This function changes the phytxctl for beacon based on current beacon ratespec AND txant
780 * setting as per this table:
781 * ratespec CCK ant = wlc->stf->txant
784 void wlc_beacon_phytxctl_txant_upd(struct wlc_info *wlc, ratespec_t bcn_rspec)
787 u16 phytxant = wlc->stf->phytxant;
788 u16 mask = PHY_TXC_ANT_MASK;
790 /* for non-siso rates or default setting, use the available chains */
791 if (WLC_PHY_11N_CAP(wlc->band)) {
792 phytxant = wlc_stf_phytxchain_sel(wlc, bcn_rspec);
795 phyctl = wlc_read_shm(wlc, M_BCN_PCTLWD);
796 phyctl = (phyctl & ~mask) | phytxant;
797 wlc_write_shm(wlc, M_BCN_PCTLWD, phyctl);
800 /* centralized protection config change function to simplify debugging, no consistency checking
801 * this should be called only on changes to avoid overhead in periodic function
803 void wlc_protection_upd(struct wlc_info *wlc, uint idx, int val)
805 BCMMSG(wlc->wiphy, "idx %d, val %d\n", idx, val);
808 case WLC_PROT_G_SPEC:
809 wlc->protection->_g = (bool) val;
812 wlc->protection->g_override = (s8) val;
814 case WLC_PROT_G_USER:
815 wlc->protection->gmode_user = (u8) val;
817 case WLC_PROT_OVERLAP:
818 wlc->protection->overlap = (s8) val;
820 case WLC_PROT_N_USER:
821 wlc->protection->nmode_user = (s8) val;
824 wlc->protection->n_cfg = (s8) val;
826 case WLC_PROT_N_CFG_OVR:
827 wlc->protection->n_cfg_override = (s8) val;
829 case WLC_PROT_N_NONGF:
830 wlc->protection->nongf = (bool) val;
832 case WLC_PROT_N_NONGF_OVR:
833 wlc->protection->nongf_override = (s8) val;
835 case WLC_PROT_N_PAM_OVR:
836 wlc->protection->n_pam_override = (s8) val;
838 case WLC_PROT_N_OBSS:
839 wlc->protection->n_obss = (bool) val;
848 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val)
850 wlc->ht_cap.cap_info &= ~(IEEE80211_HT_CAP_SGI_20 |
851 IEEE80211_HT_CAP_SGI_40);
852 wlc->ht_cap.cap_info |= (val & WLC_N_SGI_20) ?
853 IEEE80211_HT_CAP_SGI_20 : 0;
854 wlc->ht_cap.cap_info |= (val & WLC_N_SGI_40) ?
855 IEEE80211_HT_CAP_SGI_40 : 0;
858 wlc_update_beacon(wlc);
859 wlc_update_probe_resp(wlc, true);
863 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val)
865 wlc->stf->ldpc = val;
867 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_LDPC_CODING;
868 if (wlc->stf->ldpc != OFF)
869 wlc->ht_cap.cap_info |= IEEE80211_HT_CAP_LDPC_CODING;
872 wlc_update_beacon(wlc);
873 wlc_update_probe_resp(wlc, true);
874 wlc_phy_ldpc_override_set(wlc->band->pi, (val ? true : false));
879 * ucode, hwmac update
880 * Channel dependent updates for ucode and hw
882 static void wlc_ucode_mac_upd(struct wlc_info *wlc)
884 /* enable or disable any active IBSSs depending on whether or not
885 * we are on the home channel
887 if (wlc->home_chanspec == WLC_BAND_PI_RADIO_CHANSPEC) {
888 if (wlc->pub->associated) {
889 /* BMAC_NOTE: This is something that should be fixed in ucode inits.
890 * I think that the ucode inits set up the bcn templates and shm values
891 * with a bogus beacon. This should not be done in the inits. If ucode needs
892 * to set up a beacon for testing, the test routines should write it down,
893 * not expect the inits to populate a bogus beacon.
895 if (WLC_PHY_11N_CAP(wlc->band)) {
896 wlc_write_shm(wlc, M_BCN_TXTSF_OFFSET,
897 wlc->band->bcntsfoff);
901 /* disable an active IBSS if we are not on the home channel */
904 /* update the various promisc bits */
905 wlc_mac_bcn_promisc(wlc);
906 wlc_mac_promisc(wlc);
909 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec)
911 wlc_rateset_t default_rateset;
913 uint i, band_order[2];
915 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
917 * We might have been bandlocked during down and the chip power-cycled (hibernate).
918 * figure out the right band to park on
920 if (wlc->bandlocked || NBANDS(wlc) == 1) {
921 parkband = wlc->band->bandunit; /* updated in wlc_bandlock() */
922 band_order[0] = band_order[1] = parkband;
924 /* park on the band of the specified chanspec */
925 parkband = CHSPEC_WLCBANDUNIT(chanspec);
927 /* order so that parkband initialize last */
928 band_order[0] = parkband ^ 1;
929 band_order[1] = parkband;
932 /* make each band operational, software state init */
933 for (i = 0; i < NBANDS(wlc); i++) {
934 uint j = band_order[i];
936 wlc->band = wlc->bandstate[j];
938 wlc_default_rateset(wlc, &default_rateset);
940 /* fill in hw_rate */
941 wlc_rateset_filter(&default_rateset, &wlc->band->hw_rateset,
942 false, WLC_RATES_CCK_OFDM, WLC_RATE_MASK,
943 (bool) N_ENAB(wlc->pub));
945 /* init basic rate lookup */
946 wlc_rate_lookup_init(wlc, &default_rateset);
949 /* sync up phy/radio chanspec */
950 wlc_set_phy_chanspec(wlc, chanspec);
953 /* band-specific init */
954 static void WLBANDINITFN(wlc_bsinit) (struct wlc_info *wlc)
956 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n",
957 wlc->pub->unit, wlc->band->bandunit);
959 /* write ucode ACK/CTS rate table */
960 wlc_set_ratetable(wlc);
962 /* update some band specific mac configuration */
963 wlc_ucode_mac_upd(wlc);
965 /* init antenna selection */
966 wlc_antsel_init(wlc->asi);
970 /* switch to and initialize new band */
971 static void WLBANDINITFN(wlc_setband) (struct wlc_info *wlc, uint bandunit)
974 struct wlc_bsscfg *cfg;
976 wlc->band = wlc->bandstate[bandunit];
981 /* wait for at least one beacon before entering sleeping state */
982 FOREACH_AS_STA(wlc, idx, cfg)
983 cfg->PMawakebcn = true;
984 wlc_set_ps_ctrl(wlc);
986 /* band-specific initializations */
990 /* Initialize a WME Parameter Info Element with default STA parameters from WMM Spec, Table 12 */
991 void wlc_wme_initparams_sta(struct wlc_info *wlc, wme_param_ie_t *pe)
993 static const wme_param_ie_t stadef = {
996 WME_SUBTYPE_PARAM_IE,
1001 {EDCF_AC_BE_ACI_STA, EDCF_AC_BE_ECW_STA,
1002 cpu_to_le16(EDCF_AC_BE_TXOP_STA)},
1003 {EDCF_AC_BK_ACI_STA, EDCF_AC_BK_ECW_STA,
1004 cpu_to_le16(EDCF_AC_BK_TXOP_STA)},
1005 {EDCF_AC_VI_ACI_STA, EDCF_AC_VI_ECW_STA,
1006 cpu_to_le16(EDCF_AC_VI_TXOP_STA)},
1007 {EDCF_AC_VO_ACI_STA, EDCF_AC_VO_ECW_STA,
1008 cpu_to_le16(EDCF_AC_VO_TXOP_STA)}
1011 memcpy(pe, &stadef, sizeof(*pe));
1014 void wlc_wme_setparams(struct wlc_info *wlc, u16 aci,
1015 const struct ieee80211_tx_queue_params *params,
1019 shm_acparams_t acp_shm;
1022 /* Only apply params if the core is out of reset and has clocks */
1024 wiphy_err(wlc->wiphy, "wl%d: %s : no-clock\n", wlc->pub->unit,
1030 memset((char *)&acp_shm, 0, sizeof(shm_acparams_t));
1031 /* fill in shm ac params struct */
1032 acp_shm.txop = le16_to_cpu(params->txop);
1033 /* convert from units of 32us to us for ucode */
1034 wlc->edcf_txop[aci & 0x3] = acp_shm.txop =
1035 EDCF_TXOP2USEC(acp_shm.txop);
1036 acp_shm.aifs = (params->aifs & EDCF_AIFSN_MASK);
1038 if (aci == AC_VI && acp_shm.txop == 0
1039 && acp_shm.aifs < EDCF_AIFSN_MAX)
1042 if (acp_shm.aifs < EDCF_AIFSN_MIN
1043 || acp_shm.aifs > EDCF_AIFSN_MAX) {
1044 wiphy_err(wlc->wiphy, "wl%d: wlc_edcf_setparams: bad "
1045 "aifs %d\n", wlc->pub->unit, acp_shm.aifs);
1049 acp_shm.cwmin = params->cw_min;
1050 acp_shm.cwmax = params->cw_max;
1051 acp_shm.cwcur = acp_shm.cwmin;
1053 R_REG(&wlc->regs->tsf_random) & acp_shm.cwcur;
1054 acp_shm.reggap = acp_shm.bslots + acp_shm.aifs;
1055 /* Indicate the new params to the ucode */
1056 acp_shm.status = wlc_read_shm(wlc, (M_EDCF_QINFO +
1057 wme_shmemacindex(aci) *
1059 M_EDCF_STATUS_OFF));
1060 acp_shm.status |= WME_STATUS_NEWAC;
1062 /* Fill in shm acparam table */
1063 shm_entry = (u16 *) &acp_shm;
1064 for (i = 0; i < (int)sizeof(shm_acparams_t); i += 2)
1067 wme_shmemacindex(aci) * M_EDCF_QLEN + i,
1073 wlc_suspend_mac_and_wait(wlc);
1076 wlc_enable_mac(wlc);
1080 void wlc_edcf_setparams(struct wlc_info *wlc, bool suspend)
1084 edcf_acparam_t *edcf_acp;
1086 struct ieee80211_tx_queue_params txq_pars;
1087 struct ieee80211_tx_queue_params *params = &txq_pars;
1090 * AP uses AC params from wme_param_ie_ap.
1091 * AP advertises AC params from wme_param_ie.
1092 * STA uses AC params from wme_param_ie.
1095 edcf_acp = (edcf_acparam_t *) &wlc->wme_param_ie.acparam[0];
1097 for (i_ac = 0; i_ac < AC_COUNT; i_ac++, edcf_acp++) {
1098 /* find out which ac this set of params applies to */
1099 aci = (edcf_acp->ACI & EDCF_ACI_MASK) >> EDCF_ACI_SHIFT;
1101 /* fill in shm ac params struct */
1102 params->txop = edcf_acp->TXOP;
1103 params->aifs = edcf_acp->ACI;
1105 /* CWmin = 2^(ECWmin) - 1 */
1106 params->cw_min = EDCF_ECW2CW(edcf_acp->ECW & EDCF_ECWMIN_MASK);
1107 /* CWmax = 2^(ECWmax) - 1 */
1108 params->cw_max = EDCF_ECW2CW((edcf_acp->ECW & EDCF_ECWMAX_MASK)
1109 >> EDCF_ECWMAX_SHIFT);
1110 wlc_wme_setparams(wlc, aci, params, suspend);
1114 wlc_suspend_mac_and_wait(wlc);
1116 if (AP_ENAB(wlc->pub) && WME_ENAB(wlc->pub)) {
1117 wlc_update_beacon(wlc);
1118 wlc_update_probe_resp(wlc, false);
1122 wlc_enable_mac(wlc);
1126 bool wlc_timers_init(struct wlc_info *wlc, int unit)
1128 wlc->wdtimer = wl_init_timer(wlc->wl, wlc_watchdog_by_timer,
1130 if (!wlc->wdtimer) {
1131 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for wdtimer "
1136 wlc->radio_timer = wl_init_timer(wlc->wl, wlc_radio_timer,
1138 if (!wlc->radio_timer) {
1139 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for radio_timer "
1151 * Initialize wlc_info default values ...
1152 * may get overrides later in this function
1154 void wlc_info_init(struct wlc_info *wlc, int unit)
1157 /* Assume the device is there until proven otherwise */
1158 wlc->device_present = true;
1160 /* Save our copy of the chanspec */
1161 wlc->chanspec = CH20MHZ_CHSPEC(1);
1163 /* various 802.11g modes */
1164 wlc->shortslot = false;
1165 wlc->shortslot_override = WLC_SHORTSLOT_AUTO;
1167 wlc_protection_upd(wlc, WLC_PROT_G_OVR, WLC_PROTECTION_AUTO);
1168 wlc_protection_upd(wlc, WLC_PROT_G_SPEC, false);
1170 wlc_protection_upd(wlc, WLC_PROT_N_CFG_OVR, WLC_PROTECTION_AUTO);
1171 wlc_protection_upd(wlc, WLC_PROT_N_CFG, WLC_N_PROTECTION_OFF);
1172 wlc_protection_upd(wlc, WLC_PROT_N_NONGF_OVR, WLC_PROTECTION_AUTO);
1173 wlc_protection_upd(wlc, WLC_PROT_N_NONGF, false);
1174 wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR, AUTO);
1176 wlc_protection_upd(wlc, WLC_PROT_OVERLAP, WLC_PROTECTION_CTL_OVERLAP);
1178 /* 802.11g draft 4.0 NonERP elt advertisement */
1179 wlc->include_legacy_erp = true;
1181 wlc->stf->ant_rx_ovr = ANT_RX_DIV_DEF;
1182 wlc->stf->txant = ANT_TX_DEF;
1184 wlc->prb_resp_timeout = WLC_PRB_RESP_TIMEOUT;
1186 wlc->usr_fragthresh = DOT11_DEFAULT_FRAG_LEN;
1187 for (i = 0; i < NFIFO; i++)
1188 wlc->fragthresh[i] = DOT11_DEFAULT_FRAG_LEN;
1189 wlc->RTSThresh = DOT11_DEFAULT_RTS_LEN;
1191 /* default rate fallback retry limits */
1192 wlc->SFBL = RETRY_SHORT_FB;
1193 wlc->LFBL = RETRY_LONG_FB;
1195 /* default mac retry limits */
1196 wlc->SRL = RETRY_SHORT_DEF;
1197 wlc->LRL = RETRY_LONG_DEF;
1199 /* Set flag to indicate that hw keys should be used when available. */
1200 wlc->wsec_swkeys = false;
1202 /* init the 4 static WEP default keys */
1203 for (i = 0; i < WSEC_MAX_DEFAULT_KEYS; i++) {
1204 wlc->wsec_keys[i] = wlc->wsec_def_keys[i];
1205 wlc->wsec_keys[i]->idx = (u8) i;
1208 /* WME QoS mode is Auto by default */
1209 wlc->pub->_wme = AUTO;
1211 #ifdef BCMSDIODEV_ENABLED
1212 wlc->pub->_priofc = true; /* enable priority flow control for sdio dongle */
1215 wlc->pub->_ampdu = AMPDU_AGG_HOST;
1216 wlc->pub->bcmerror = 0;
1217 wlc->pub->_coex = ON;
1219 /* initialize mpc delay */
1220 wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
1223 static bool wlc_state_bmac_sync(struct wlc_info *wlc)
1225 wlc_bmac_state_t state_bmac;
1227 if (wlc_bmac_state_get(wlc->hw, &state_bmac) != 0)
1230 wlc->machwcap = state_bmac.machwcap;
1231 wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR,
1232 (s8) state_bmac.preamble_ovr);
1237 static uint wlc_attach_module(struct wlc_info *wlc)
1241 unit = wlc->pub->unit;
1243 wlc->asi = wlc_antsel_attach(wlc);
1244 if (wlc->asi == NULL) {
1245 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_antsel_attach "
1251 wlc->ampdu = wlc_ampdu_attach(wlc);
1252 if (wlc->ampdu == NULL) {
1253 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_ampdu_attach "
1259 if ((wlc_stf_attach(wlc) != 0)) {
1260 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_stf_attach "
1269 struct wlc_pub *wlc_pub(void *wlc)
1271 return ((struct wlc_info *) wlc)->pub;
1274 #define CHIP_SUPPORTS_11N(wlc) 1
1277 * The common driver entry routine. Error codes should be unique
1279 void *wlc_attach(struct wl_info *wl, u16 vendor, u16 device, uint unit,
1280 bool piomode, void *regsva, uint bustype, void *btparam,
1283 struct wlc_info *wlc;
1286 struct wlc_pub *pub;
1289 /* allocate struct wlc_info state and its substructures */
1290 wlc = (struct wlc_info *) wlc_attach_malloc(unit, &err, device);
1293 wlc->wiphy = wl->wiphy;
1300 wlc->band = wlc->bandstate[0];
1301 wlc->core = wlc->corestate;
1304 pub->_piomode = piomode;
1305 wlc->bandinit_pending = false;
1307 /* populate struct wlc_info with default values */
1308 wlc_info_init(wlc, unit);
1310 /* update sta/ap related parameters */
1313 /* 11n_disable nvram */
1314 n_disabled = getintvar(pub->vars, "11n_disable");
1317 * low level attach steps(all hw accesses go
1318 * inside, no more in rest of the attach)
1320 err = wlc_bmac_attach(wlc, vendor, device, unit, piomode, regsva,
1325 /* for some states, due to different info pointer(e,g, wlc, wlc_hw) or master/slave split,
1326 * HIGH driver(both monolithic and HIGH_ONLY) needs to sync states FROM BMAC portion driver
1328 if (!wlc_state_bmac_sync(wlc)) {
1333 pub->phy_11ncapable = WLC_PHY_11N_CAP(wlc->band);
1335 /* propagate *vars* from BMAC driver to high driver */
1336 wlc_bmac_copyfrom_vars(wlc->hw, &pub->vars, &wlc->vars_size);
1339 /* set maximum allowed duty cycle */
1340 wlc->tx_duty_cycle_ofdm =
1341 (u16) getintvar(pub->vars, "tx_duty_cycle_ofdm");
1342 wlc->tx_duty_cycle_cck =
1343 (u16) getintvar(pub->vars, "tx_duty_cycle_cck");
1345 wlc_stf_phy_chain_calc(wlc);
1347 /* txchain 1: txant 0, txchain 2: txant 1 */
1348 if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
1349 wlc->stf->txant = wlc->stf->hw_txchain - 1;
1351 /* push to BMAC driver */
1352 wlc_phy_stf_chain_init(wlc->band->pi, wlc->stf->hw_txchain,
1353 wlc->stf->hw_rxchain);
1355 /* pull up some info resulting from the low attach */
1358 for (i = 0; i < NFIFO; i++)
1359 wlc->core->txavail[i] = wlc->hw->txavail[i];
1362 wlc_bmac_hw_etheraddr(wlc->hw, wlc->perm_etheraddr);
1364 memcpy(&pub->cur_etheraddr, &wlc->perm_etheraddr, ETH_ALEN);
1366 for (j = 0; j < NBANDS(wlc); j++) {
1367 /* Use band 1 for single band 11a */
1368 if (IS_SINGLEBAND_5G(wlc->deviceid))
1371 wlc->band = wlc->bandstate[j];
1373 if (!wlc_attach_stf_ant_init(wlc)) {
1378 /* default contention windows size limits */
1379 wlc->band->CWmin = APHY_CWMIN;
1380 wlc->band->CWmax = PHY_CWMAX;
1382 /* init gmode value */
1383 if (BAND_2G(wlc->band->bandtype)) {
1384 wlc->band->gmode = GMODE_AUTO;
1385 wlc_protection_upd(wlc, WLC_PROT_G_USER,
1389 /* init _n_enab supported mode */
1390 if (WLC_PHY_11N_CAP(wlc->band) && CHIP_SUPPORTS_11N(wlc)) {
1391 if (n_disabled & WLFEATURE_DISABLE_11N) {
1393 wlc_protection_upd(wlc, WLC_PROT_N_USER, OFF);
1395 pub->_n_enab = SUPPORT_11N;
1396 wlc_protection_upd(wlc, WLC_PROT_N_USER,
1398 SUPPORT_11N) ? WL_11N_2x2 :
1403 /* init per-band default rateset, depend on band->gmode */
1404 wlc_default_rateset(wlc, &wlc->band->defrateset);
1406 /* fill in hw_rateset (used early by WLC_SET_RATESET) */
1407 wlc_rateset_filter(&wlc->band->defrateset,
1408 &wlc->band->hw_rateset, false,
1409 WLC_RATES_CCK_OFDM, WLC_RATE_MASK,
1410 (bool) N_ENAB(wlc->pub));
1413 /* update antenna config due to wlc->stf->txant/txchain/ant_rx_ovr change */
1414 wlc_stf_phy_txant_upd(wlc);
1416 /* attach each modules */
1417 err = wlc_attach_module(wlc);
1421 if (!wlc_timers_init(wlc, unit)) {
1422 wiphy_err(wl->wiphy, "wl%d: %s: wlc_init_timer failed\n", unit,
1428 /* depend on rateset, gmode */
1429 wlc->cmi = wlc_channel_mgr_attach(wlc);
1431 wiphy_err(wl->wiphy, "wl%d: %s: wlc_channel_mgr_attach failed"
1432 "\n", unit, __func__);
1437 /* init default when all parameters are ready, i.e. ->rateset */
1438 wlc_bss_default_init(wlc);
1441 * Complete the wlc default state initializations..
1444 /* allocate our initial queue */
1445 wlc->pkt_queue = wlc_txq_alloc(wlc);
1446 if (wlc->pkt_queue == NULL) {
1447 wiphy_err(wl->wiphy, "wl%d: %s: failed to malloc tx queue\n",
1453 wlc->bsscfg[0] = wlc->cfg;
1455 wlc->cfg->wlc = wlc;
1456 pub->txmaxpkts = MAXTXPKTS;
1458 wlc_wme_initparams_sta(wlc, &wlc->wme_param_ie);
1460 wlc->mimoft = FT_HT;
1461 wlc->ht_cap.cap_info = HT_CAP;
1462 if (HT_ENAB(wlc->pub))
1463 wlc->stf->ldpc = AUTO;
1465 wlc->mimo_40txbw = AUTO;
1466 wlc->ofdm_40txbw = AUTO;
1467 wlc->cck_40txbw = AUTO;
1468 wlc_update_mimo_band_bwcap(wlc, WLC_N_BW_20IN2G_40IN5G);
1470 /* Set default values of SGI */
1471 if (WLC_SGI_CAP_PHY(wlc)) {
1472 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1474 } else if (WLCISSSLPNPHY(wlc->band)) {
1475 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1478 wlc_ht_update_sgi_rx(wlc, 0);
1482 /* *******nvram 11n config overrides Start ********* */
1484 /* apply the sgi override from nvram conf */
1485 if (n_disabled & WLFEATURE_DISABLE_11N_SGI_TX)
1488 if (n_disabled & WLFEATURE_DISABLE_11N_SGI_RX)
1489 wlc_ht_update_sgi_rx(wlc, 0);
1491 /* apply the stbc override from nvram conf */
1492 if (n_disabled & WLFEATURE_DISABLE_11N_STBC_TX) {
1493 wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
1494 wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;
1495 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_TX_STBC;
1497 if (n_disabled & WLFEATURE_DISABLE_11N_STBC_RX)
1498 wlc_stf_stbc_rx_set(wlc, HT_CAP_RX_STBC_NO);
1500 /* apply the GF override from nvram conf */
1501 if (n_disabled & WLFEATURE_DISABLE_11N_GF)
1502 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_GRN_FLD;
1504 /* initialize radio_mpc_disable according to wlc->mpc */
1505 wlc_radio_mpc_upd(wlc);
1507 if ((wlc->pub->sih->chip) == BCM43235_CHIP_ID) {
1508 if ((getintvar(wlc->pub->vars, "aa2g") == 7) ||
1509 (getintvar(wlc->pub->vars, "aa5g") == 7)) {
1510 wlc_bmac_antsel_set(wlc->hw, 1);
1513 wlc_bmac_antsel_set(wlc->hw, wlc->asi->antsel_avail);
1522 wiphy_err(wl->wiphy, "wl%d: %s: failed with err %d\n",
1523 unit, __func__, err);
1532 static void wlc_attach_antgain_init(struct wlc_info *wlc)
1535 unit = wlc->pub->unit;
1537 if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) {
1538 /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */
1539 wlc->band->antgain = 8;
1540 } else if (wlc->band->antgain == -1) {
1541 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
1542 " srom, using 2dB\n", unit, __func__);
1543 wlc->band->antgain = 8;
1546 /* Older sroms specified gain in whole dbm only. In order
1547 * be able to specify qdbm granularity and remain backward compatible
1548 * the whole dbms are now encoded in only low 6 bits and remaining qdbms
1549 * are encoded in the hi 2 bits. 6 bit signed number ranges from
1550 * -32 - 31. Examples: 0x1 = 1 db,
1551 * 0xc1 = 1.75 db (1 + 3 quarters),
1552 * 0x3f = -1 (-1 + 0 quarters),
1553 * 0x7f = -.75 (-1 in low 6 bits + 1 quarters in hi 2 bits) = -3 qdbm.
1554 * 0xbf = -.50 (-1 in low 6 bits + 2 quarters in hi 2 bits) = -2 qdbm.
1556 gain = wlc->band->antgain & 0x3f;
1557 gain <<= 2; /* Sign extend */
1559 fract = (wlc->band->antgain & 0xc0) >> 6;
1560 wlc->band->antgain = 4 * gain + fract;
1564 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc)
1571 unit = wlc->pub->unit;
1572 vars = wlc->pub->vars;
1573 bandtype = wlc->band->bandtype;
1575 /* get antennas available */
1576 aa = (s8) getintvar(vars, (BAND_5G(bandtype) ? "aa5g" : "aa2g"));
1578 aa = (s8) getintvar(vars,
1579 (BAND_5G(bandtype) ? "aa1" : "aa0"));
1580 if ((aa < 1) || (aa > 15)) {
1581 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
1582 " srom (0x%x), using 3\n", unit, __func__, aa);
1586 /* reset the defaults if we have a single antenna */
1588 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_0;
1589 wlc->stf->txant = ANT_TX_FORCE_0;
1590 } else if (aa == 2) {
1591 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_1;
1592 wlc->stf->txant = ANT_TX_FORCE_1;
1596 /* Compute Antenna Gain */
1597 wlc->band->antgain =
1598 (s8) getintvar(vars, (BAND_5G(bandtype) ? "ag1" : "ag0"));
1599 wlc_attach_antgain_init(wlc);
1605 static void wlc_timers_deinit(struct wlc_info *wlc)
1607 /* free timer state */
1609 wl_free_timer(wlc->wl, wlc->wdtimer);
1610 wlc->wdtimer = NULL;
1612 if (wlc->radio_timer) {
1613 wl_free_timer(wlc->wl, wlc->radio_timer);
1614 wlc->radio_timer = NULL;
1618 static void wlc_detach_module(struct wlc_info *wlc)
1621 wlc_antsel_detach(wlc->asi);
1626 wlc_ampdu_detach(wlc->ampdu);
1630 wlc_stf_detach(wlc);
1634 * Return a count of the number of driver callbacks still pending.
1636 * General policy is that wlc_detach can only dealloc/free software states. It can NOT
1637 * touch hardware registers since the d11core may be in reset and clock may not be available.
1638 * One exception is sb register access, which is possible if crystal is turned on
1639 * After "down" state, driver should avoid software timer with the exception of radio_monitor.
1641 uint wlc_detach(struct wlc_info *wlc)
1648 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1650 callbacks += wlc_bmac_detach(wlc);
1652 /* delete software timers */
1653 if (!wlc_radio_monitor_stop(wlc))
1656 wlc_channel_mgr_detach(wlc->cmi);
1658 wlc_timers_deinit(wlc);
1660 wlc_detach_module(wlc);
1663 while (wlc->tx_queues != NULL)
1664 wlc_txq_free(wlc, wlc->tx_queues);
1666 wlc_detach_mfree(wlc);
1670 /* update state that depends on the current value of "ap" */
1671 void wlc_ap_upd(struct wlc_info *wlc)
1673 if (AP_ENAB(wlc->pub))
1674 wlc->PLCPHdr_override = WLC_PLCP_AUTO; /* AP: short not allowed, but not enforced */
1676 wlc->PLCPHdr_override = WLC_PLCP_SHORT; /* STA-BSS; short capable */
1682 /* read hwdisable state and propagate to wlc flag */
1683 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc)
1685 if (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO || wlc->pub->hw_off)
1688 if (wlc_bmac_radio_read_hwdisabled(wlc->hw)) {
1689 mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
1691 mboolclr(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
1695 /* return true if Minimum Power Consumption should be entered, false otherwise */
1696 bool wlc_is_non_delay_mpc(struct wlc_info *wlc)
1701 bool wlc_ismpc(struct wlc_info *wlc)
1703 return (wlc->mpc_delay_off == 0) && (wlc_is_non_delay_mpc(wlc));
1706 void wlc_radio_mpc_upd(struct wlc_info *wlc)
1708 bool mpc_radio, radio_state;
1711 * Clear the WL_RADIO_MPC_DISABLE bit when mpc feature is disabled
1712 * in case the WL_RADIO_MPC_DISABLE bit was set. Stop the radio
1713 * monitor also when WL_RADIO_MPC_DISABLE is the only reason that
1714 * the radio is going down.
1717 if (!wlc->pub->radio_disabled)
1719 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
1721 if (!wlc->pub->radio_disabled)
1722 wlc_radio_monitor_stop(wlc);
1727 * sync ismpc logic with WL_RADIO_MPC_DISABLE bit in wlc->pub->radio_disabled
1728 * to go ON, always call radio_upd synchronously
1729 * to go OFF, postpone radio_upd to later when context is safe(e.g. watchdog)
1732 (mboolisset(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE) ? OFF :
1734 mpc_radio = (wlc_ismpc(wlc) == true) ? OFF : ON;
1736 if (radio_state == ON && mpc_radio == OFF)
1737 wlc->mpc_delay_off = wlc->mpc_dlycnt;
1738 else if (radio_state == OFF && mpc_radio == ON) {
1739 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
1741 if (wlc->mpc_offcnt < WLC_MPC_THRESHOLD) {
1742 wlc->mpc_dlycnt = WLC_MPC_MAX_DELAYCNT;
1744 wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
1745 wlc->mpc_dur += OSL_SYSUPTIME() - wlc->mpc_laston_ts;
1747 /* Below logic is meant to capture the transition from mpc off to mpc on for reasons
1748 * other than wlc->mpc_delay_off keeping the mpc off. In that case reset
1749 * wlc->mpc_delay_off to wlc->mpc_dlycnt, so that we restart the countdown of mpc_delay_off
1751 if ((wlc->prev_non_delay_mpc == false) &&
1752 (wlc_is_non_delay_mpc(wlc) == true) && wlc->mpc_delay_off) {
1753 wlc->mpc_delay_off = wlc->mpc_dlycnt;
1755 wlc->prev_non_delay_mpc = wlc_is_non_delay_mpc(wlc);
1759 * centralized radio disable/enable function,
1760 * invoke radio enable/disable after updating hwradio status
1762 static void wlc_radio_upd(struct wlc_info *wlc)
1764 if (wlc->pub->radio_disabled) {
1765 wlc_radio_disable(wlc);
1767 wlc_radio_enable(wlc);
1771 /* maintain LED behavior in down state */
1772 static void wlc_down_led_upd(struct wlc_info *wlc)
1774 /* maintain LEDs while in down state, turn on sbclk if not available yet */
1775 /* turn on sbclk if necessary */
1776 if (!AP_ENAB(wlc->pub)) {
1777 wlc_pllreq(wlc, true, WLC_PLLREQ_FLIP);
1779 wlc_pllreq(wlc, false, WLC_PLLREQ_FLIP);
1783 /* update hwradio status and return it */
1784 bool wlc_check_radio_disabled(struct wlc_info *wlc)
1786 wlc_radio_hwdisable_upd(wlc);
1788 return mboolisset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE) ? true : false;
1791 void wlc_radio_disable(struct wlc_info *wlc)
1793 if (!wlc->pub->up) {
1794 wlc_down_led_upd(wlc);
1798 wlc_radio_monitor_start(wlc);
1802 static void wlc_radio_enable(struct wlc_info *wlc)
1807 if (DEVICEREMOVED(wlc))
1813 /* periodical query hw radio button while driver is "down" */
1814 static void wlc_radio_timer(void *arg)
1816 struct wlc_info *wlc = (struct wlc_info *) arg;
1818 if (DEVICEREMOVED(wlc)) {
1819 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
1825 /* cap mpc off count */
1826 if (wlc->mpc_offcnt < WLC_MPC_MAX_DELAYCNT)
1829 wlc_radio_hwdisable_upd(wlc);
1833 static bool wlc_radio_monitor_start(struct wlc_info *wlc)
1835 /* Don't start the timer if HWRADIO feature is disabled */
1836 if (wlc->radio_monitor || (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO))
1839 wlc->radio_monitor = true;
1840 wlc_pllreq(wlc, true, WLC_PLLREQ_RADIO_MON);
1841 wl_add_timer(wlc->wl, wlc->radio_timer, TIMER_INTERVAL_RADIOCHK, true);
1845 bool wlc_radio_monitor_stop(struct wlc_info *wlc)
1847 if (!wlc->radio_monitor)
1850 wlc->radio_monitor = false;
1851 wlc_pllreq(wlc, false, WLC_PLLREQ_RADIO_MON);
1852 return wl_del_timer(wlc->wl, wlc->radio_timer);
1855 static void wlc_watchdog_by_timer(void *arg)
1860 /* common watchdog code */
1861 static void wlc_watchdog(void *arg)
1863 struct wlc_info *wlc = (struct wlc_info *) arg;
1865 struct wlc_bsscfg *cfg;
1867 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1872 if (DEVICEREMOVED(wlc)) {
1873 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
1879 /* increment second count */
1882 /* delay radio disable */
1883 if (wlc->mpc_delay_off) {
1884 if (--wlc->mpc_delay_off == 0) {
1885 mboolset(wlc->pub->radio_disabled,
1886 WL_RADIO_MPC_DISABLE);
1887 if (wlc->mpc && wlc_ismpc(wlc))
1888 wlc->mpc_offcnt = 0;
1889 wlc->mpc_laston_ts = OSL_SYSUPTIME();
1894 wlc_radio_mpc_upd(wlc);
1895 /* radio sync: sw/hw/mpc --> radio_disable/radio_enable */
1896 wlc_radio_hwdisable_upd(wlc);
1898 /* if radio is disable, driver may be down, quit here */
1899 if (wlc->pub->radio_disabled)
1902 wlc_bmac_watchdog(wlc);
1904 /* occasionally sample mac stat counters to detect 16-bit counter wrap */
1905 if ((wlc->pub->now % SW_TIMER_MAC_STAT_UPD) == 0)
1908 /* Manage TKIP countermeasures timers */
1909 FOREACH_BSS(wlc, i, cfg) {
1910 if (cfg->tk_cm_dt) {
1913 if (cfg->tk_cm_bt) {
1918 /* Call any registered watchdog handlers */
1919 for (i = 0; i < WLC_MAXMODULES; i++) {
1920 if (wlc->modulecb[i].watchdog_fn)
1921 wlc->modulecb[i].watchdog_fn(wlc->modulecb[i].hdl);
1924 if (WLCISNPHY(wlc->band) && !wlc->pub->tempsense_disable &&
1925 ((wlc->pub->now - wlc->tempsense_lasttime) >=
1926 WLC_TEMPSENSE_PERIOD)) {
1927 wlc->tempsense_lasttime = wlc->pub->now;
1928 wlc_tempsense_upd(wlc);
1932 /* make interface operational */
1933 int wlc_up(struct wlc_info *wlc)
1935 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1937 /* HW is turned off so don't try to access it */
1938 if (wlc->pub->hw_off || DEVICEREMOVED(wlc))
1941 if (!wlc->pub->hw_up) {
1942 wlc_bmac_hw_up(wlc->hw);
1943 wlc->pub->hw_up = true;
1946 if ((wlc->pub->boardflags & BFL_FEM)
1947 && (wlc->pub->sih->chip == BCM4313_CHIP_ID)) {
1948 if (wlc->pub->boardrev >= 0x1250
1949 && (wlc->pub->boardflags & BFL_FEM_BT)) {
1950 wlc_mhf(wlc, MHF5, MHF5_4313_GPIOCTRL,
1951 MHF5_4313_GPIOCTRL, WLC_BAND_ALL);
1953 wlc_mhf(wlc, MHF4, MHF4_EXTPA_ENABLE, MHF4_EXTPA_ENABLE,
1959 * Need to read the hwradio status here to cover the case where the system
1960 * is loaded with the hw radio disabled. We do not want to bring the driver up in this case.
1961 * if radio is disabled, abort up, lower power, start radio timer and return 0(for NDIS)
1962 * don't call radio_update to avoid looping wlc_up.
1964 * wlc_bmac_up_prep() returns either 0 or -BCME_RADIOOFF only
1966 if (!wlc->pub->radio_disabled) {
1967 int status = wlc_bmac_up_prep(wlc->hw);
1968 if (status == -ENOMEDIUM) {
1970 (wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE)) {
1972 struct wlc_bsscfg *bsscfg;
1973 mboolset(wlc->pub->radio_disabled,
1974 WL_RADIO_HW_DISABLE);
1976 FOREACH_BSS(wlc, idx, bsscfg) {
1977 if (!BSSCFG_STA(bsscfg)
1978 || !bsscfg->enable || !bsscfg->BSS)
1980 wiphy_err(wlc->wiphy, "wl%d.%d: wlc_up"
1982 "wlc_bsscfg_disable()\n",
1983 wlc->pub->unit, idx);
1989 if (wlc->pub->radio_disabled) {
1990 wlc_radio_monitor_start(wlc);
1994 /* wlc_bmac_up_prep has done wlc_corereset(). so clk is on, set it */
1997 wlc_radio_monitor_stop(wlc);
1999 /* Set EDCF hostflags */
2000 if (EDCF_ENAB(wlc->pub)) {
2001 wlc_mhf(wlc, MHF1, MHF1_EDCF, MHF1_EDCF, WLC_BAND_ALL);
2003 wlc_mhf(wlc, MHF1, MHF1_EDCF, 0, WLC_BAND_ALL);
2006 if (WLC_WAR16165(wlc))
2007 wlc_mhf(wlc, MHF2, MHF2_PCISLOWCLKWAR, MHF2_PCISLOWCLKWAR,
2011 wlc->pub->up = true;
2013 if (wlc->bandinit_pending) {
2014 wlc_suspend_mac_and_wait(wlc);
2015 wlc_set_chanspec(wlc, wlc->default_bss->chanspec);
2016 wlc->bandinit_pending = false;
2017 wlc_enable_mac(wlc);
2020 wlc_bmac_up_finish(wlc->hw);
2022 /* other software states up after ISR is running */
2023 /* start APs that were to be brought up but are not up yet */
2024 /* if (AP_ENAB(wlc->pub)) wlc_restart_ap(wlc->ap); */
2026 /* Program the TX wme params with the current settings */
2027 wlc_wme_retries_write(wlc);
2029 /* start one second watchdog timer */
2030 wl_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG, true);
2031 wlc->WDarmed = true;
2033 /* ensure antenna config is up to date */
2034 wlc_stf_phy_txant_upd(wlc);
2035 /* ensure LDPC config is in sync */
2036 wlc_ht_update_ldpc(wlc, wlc->stf->ldpc);
2041 /* Initialize the base precedence map for dequeueing from txq based on WME settings */
2042 static void wlc_tx_prec_map_init(struct wlc_info *wlc)
2044 wlc->tx_prec_map = WLC_PREC_BMP_ALL;
2045 memset(wlc->fifo2prec_map, 0, NFIFO * sizeof(u16));
2047 /* For non-WME, both fifos have overlapping MAXPRIO. So just disable all precedences
2048 * if either is full.
2050 if (!EDCF_ENAB(wlc->pub)) {
2051 wlc->fifo2prec_map[TX_DATA_FIFO] = WLC_PREC_BMP_ALL;
2052 wlc->fifo2prec_map[TX_CTL_FIFO] = WLC_PREC_BMP_ALL;
2054 wlc->fifo2prec_map[TX_AC_BK_FIFO] = WLC_PREC_BMP_AC_BK;
2055 wlc->fifo2prec_map[TX_AC_BE_FIFO] = WLC_PREC_BMP_AC_BE;
2056 wlc->fifo2prec_map[TX_AC_VI_FIFO] = WLC_PREC_BMP_AC_VI;
2057 wlc->fifo2prec_map[TX_AC_VO_FIFO] = WLC_PREC_BMP_AC_VO;
2061 static uint wlc_down_del_timer(struct wlc_info *wlc)
2069 * Mark the interface nonoperational, stop the software mechanisms,
2070 * disable the hardware, free any transient buffer state.
2071 * Return a count of the number of driver callbacks still pending.
2073 uint wlc_down(struct wlc_info *wlc)
2078 bool dev_gone = false;
2079 struct wlc_txq_info *qi;
2081 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
2083 /* check if we are already in the going down path */
2084 if (wlc->going_down) {
2085 wiphy_err(wlc->wiphy, "wl%d: %s: Driver going down so return"
2086 "\n", wlc->pub->unit, __func__);
2092 /* in between, mpc could try to bring down again.. */
2093 wlc->going_down = true;
2095 callbacks += wlc_bmac_down_prep(wlc->hw);
2097 dev_gone = DEVICEREMOVED(wlc);
2099 /* Call any registered down handlers */
2100 for (i = 0; i < WLC_MAXMODULES; i++) {
2101 if (wlc->modulecb[i].down_fn)
2103 wlc->modulecb[i].down_fn(wlc->modulecb[i].hdl);
2106 /* cancel the watchdog timer */
2108 if (!wl_del_timer(wlc->wl, wlc->wdtimer))
2110 wlc->WDarmed = false;
2112 /* cancel all other timers */
2113 callbacks += wlc_down_del_timer(wlc);
2115 wlc->pub->up = false;
2117 wlc_phy_mute_upd(wlc->band->pi, false, PHY_MUTE_ALL);
2119 /* clear txq flow control */
2120 wlc_txflowcontrol_reset(wlc);
2122 /* flush tx queues */
2123 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
2124 bcm_pktq_flush(&qi->q, true, NULL, NULL);
2127 callbacks += wlc_bmac_down_finish(wlc->hw);
2129 /* wlc_bmac_down_finish has done wlc_coredisable(). so clk is off */
2132 wlc->going_down = false;
2136 /* Set the current gmode configuration */
2137 int wlc_set_gmode(struct wlc_info *wlc, u8 gmode, bool config)
2142 /* Default to 54g Auto */
2143 s8 shortslot = WLC_SHORTSLOT_AUTO; /* Advertise and use shortslot (-1/0/1 Auto/Off/On) */
2144 bool shortslot_restrict = false; /* Restrict association to stations that support shortslot
2146 bool ofdm_basic = false; /* Make 6, 12, and 24 basic rates */
2147 int preamble = WLC_PLCP_LONG; /* Advertise and use short preambles (-1/0/1 Auto/Off/On) */
2148 bool preamble_restrict = false; /* Restrict association to stations that support short
2151 struct wlcband *band;
2153 /* if N-support is enabled, allow Gmode set as long as requested
2154 * Gmode is not GMODE_LEGACY_B
2156 if (N_ENAB(wlc->pub) && gmode == GMODE_LEGACY_B)
2159 /* verify that we are dealing with 2G band and grab the band pointer */
2160 if (wlc->band->bandtype == WLC_BAND_2G)
2162 else if ((NBANDS(wlc) > 1) &&
2163 (wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype == WLC_BAND_2G))
2164 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
2168 /* Legacy or bust when no OFDM is supported by regulatory */
2169 if ((wlc_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
2170 WLC_NO_OFDM) && (gmode != GMODE_LEGACY_B))
2173 /* update configuration value */
2175 wlc_protection_upd(wlc, WLC_PROT_G_USER, gmode);
2177 /* Clear supported rates filter */
2178 memset(&wlc->sup_rates_override, 0, sizeof(wlc_rateset_t));
2180 /* Clear rateset override */
2181 memset(&rs, 0, sizeof(wlc_rateset_t));
2184 case GMODE_LEGACY_B:
2185 shortslot = WLC_SHORTSLOT_OFF;
2186 wlc_rateset_copy(&gphy_legacy_rates, &rs);
2191 if (AP_ENAB(wlc->pub))
2192 wlc_rateset_copy(&cck_rates, &wlc->sup_rates_override);
2196 /* Accept defaults */
2201 preamble = WLC_PLCP_SHORT;
2202 preamble_restrict = true;
2205 case GMODE_PERFORMANCE:
2206 if (AP_ENAB(wlc->pub)) /* Put all rates into the Supported Rates element */
2207 wlc_rateset_copy(&cck_ofdm_rates,
2208 &wlc->sup_rates_override);
2210 shortslot = WLC_SHORTSLOT_ON;
2211 shortslot_restrict = true;
2213 preamble = WLC_PLCP_SHORT;
2214 preamble_restrict = true;
2219 wiphy_err(wlc->wiphy, "wl%d: %s: invalid gmode %d\n",
2220 wlc->pub->unit, __func__, gmode);
2225 * If we are switching to gmode == GMODE_LEGACY_B,
2226 * clean up rate info that may refer to OFDM rates.
2228 if ((gmode == GMODE_LEGACY_B) && (band->gmode != GMODE_LEGACY_B)) {
2229 band->gmode = gmode;
2230 if (band->rspec_override && !IS_CCK(band->rspec_override)) {
2231 band->rspec_override = 0;
2232 wlc_reprate_init(wlc);
2234 if (band->mrspec_override && !IS_CCK(band->mrspec_override)) {
2235 band->mrspec_override = 0;
2239 band->gmode = gmode;
2241 wlc->shortslot_override = shortslot;
2243 if (AP_ENAB(wlc->pub)) {
2244 /* wlc->ap->shortslot_restrict = shortslot_restrict; */
2245 wlc->PLCPHdr_override =
2247 WLC_PLCP_LONG) ? WLC_PLCP_SHORT : WLC_PLCP_AUTO;
2250 if ((AP_ENAB(wlc->pub) && preamble != WLC_PLCP_LONG)
2251 || preamble == WLC_PLCP_SHORT)
2252 wlc->default_bss->capability |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2254 wlc->default_bss->capability &= ~WLAN_CAPABILITY_SHORT_PREAMBLE;
2256 /* Update shortslot capability bit for AP and IBSS */
2257 if ((AP_ENAB(wlc->pub) && shortslot == WLC_SHORTSLOT_AUTO) ||
2258 shortslot == WLC_SHORTSLOT_ON)
2259 wlc->default_bss->capability |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2261 wlc->default_bss->capability &=
2262 ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
2264 /* Use the default 11g rateset */
2266 wlc_rateset_copy(&cck_ofdm_rates, &rs);
2269 for (i = 0; i < rs.count; i++) {
2270 if (rs.rates[i] == WLC_RATE_6M
2271 || rs.rates[i] == WLC_RATE_12M
2272 || rs.rates[i] == WLC_RATE_24M)
2273 rs.rates[i] |= WLC_RATE_FLAG;
2277 /* Set default bss rateset */
2278 wlc->default_bss->rateset.count = rs.count;
2279 memcpy(wlc->default_bss->rateset.rates, rs.rates,
2280 sizeof(wlc->default_bss->rateset.rates));
2285 static int wlc_nmode_validate(struct wlc_info *wlc, s32 nmode)
2297 if (!(WLC_PHY_11N_CAP(wlc->band)))
2309 int wlc_set_nmode(struct wlc_info *wlc, s32 nmode)
2314 err = wlc_nmode_validate(wlc, nmode);
2320 wlc->pub->_n_enab = OFF;
2321 wlc->default_bss->flags &= ~WLC_BSS_HT;
2322 /* delete the mcs rates from the default and hw ratesets */
2323 wlc_rateset_mcs_clear(&wlc->default_bss->rateset);
2324 for (i = 0; i < NBANDS(wlc); i++) {
2325 memset(wlc->bandstate[i]->hw_rateset.mcs, 0,
2327 if (IS_MCS(wlc->band->rspec_override)) {
2328 wlc->bandstate[i]->rspec_override = 0;
2329 wlc_reprate_init(wlc);
2331 if (IS_MCS(wlc->band->mrspec_override))
2332 wlc->bandstate[i]->mrspec_override = 0;
2337 if (wlc->stf->txstreams == WL_11N_3x3)
2343 /* force GMODE_AUTO if NMODE is ON */
2344 wlc_set_gmode(wlc, GMODE_AUTO, true);
2345 if (nmode == WL_11N_3x3)
2346 wlc->pub->_n_enab = SUPPORT_HT;
2348 wlc->pub->_n_enab = SUPPORT_11N;
2349 wlc->default_bss->flags |= WLC_BSS_HT;
2350 /* add the mcs rates to the default and hw ratesets */
2351 wlc_rateset_mcs_build(&wlc->default_bss->rateset,
2352 wlc->stf->txstreams);
2353 for (i = 0; i < NBANDS(wlc); i++)
2354 memcpy(wlc->bandstate[i]->hw_rateset.mcs,
2355 wlc->default_bss->rateset.mcs, MCSSET_LEN);
2365 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg)
2367 wlc_rateset_t rs, new;
2370 memcpy(&rs, rs_arg, sizeof(wlc_rateset_t));
2372 /* check for bad count value */
2373 if ((rs.count == 0) || (rs.count > WLC_NUMRATES))
2376 /* try the current band */
2377 bandunit = wlc->band->bandunit;
2378 memcpy(&new, &rs, sizeof(wlc_rateset_t));
2379 if (wlc_rate_hwrs_filter_sort_validate
2380 (&new, &wlc->bandstate[bandunit]->hw_rateset, true,
2381 wlc->stf->txstreams))
2384 /* try the other band */
2385 if (IS_MBAND_UNLOCKED(wlc)) {
2386 bandunit = OTHERBANDUNIT(wlc);
2387 memcpy(&new, &rs, sizeof(wlc_rateset_t));
2388 if (wlc_rate_hwrs_filter_sort_validate(&new,
2390 bandstate[bandunit]->
2392 wlc->stf->txstreams))
2399 /* apply new rateset */
2400 memcpy(&wlc->default_bss->rateset, &new, sizeof(wlc_rateset_t));
2401 memcpy(&wlc->bandstate[bandunit]->defrateset, &new,
2402 sizeof(wlc_rateset_t));
2406 /* simplified integer set interface for common ioctl handler */
2407 int wlc_set(struct wlc_info *wlc, int cmd, int arg)
2409 return wlc_ioctl(wlc, cmd, (void *)&arg, sizeof(arg), NULL);
2412 /* simplified integer get interface for common ioctl handler */
2413 int wlc_get(struct wlc_info *wlc, int cmd, int *arg)
2415 return wlc_ioctl(wlc, cmd, arg, sizeof(int), NULL);
2418 static void wlc_ofdm_rateset_war(struct wlc_info *wlc)
2423 if (wlc->cfg->associated)
2424 r = wlc->cfg->current_bss->rateset.rates[0];
2426 r = wlc->default_bss->rateset.rates[0];
2428 wlc_phy_ofdm_rateset_war(wlc->band->pi, war);
2434 wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
2435 struct wlc_if *wlcif)
2437 return _wlc_ioctl(wlc, cmd, arg, len, wlcif);
2440 /* common ioctl handler. return: 0=ok, -1=error, positive=particular error */
2442 _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
2443 struct wlc_if *wlcif)
2449 struct scb *nextscb;
2452 struct wlc_bsscfg *bsscfg;
2453 wlc_bss_info_t *current_bss;
2455 /* update bsscfg pointer */
2457 current_bss = bsscfg->current_bss;
2459 /* initialize the following to get rid of compiler warning */
2464 /* If the device is turned off, then it's not "removed" */
2465 if (!wlc->pub->hw_off && DEVICEREMOVED(wlc)) {
2466 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
2472 /* default argument is generic integer */
2473 pval = arg ? (int *)arg:NULL;
2475 /* This will prevent the misaligned access */
2476 if (pval && (u32) len >= sizeof(val))
2477 memcpy(&val, pval, sizeof(val));
2481 /* bool conversion to avoid duplication below */
2482 bool_val = val != 0;
2486 if ((arg == NULL) || (len <= 0)) {
2487 wiphy_err(wlc->wiphy, "wl%d: %s: Command %d needs arguments\n",
2488 wlc->pub->unit, __func__, cmd);
2495 case WLC_SET_CHANNEL:{
2496 chanspec_t chspec = CH20MHZ_CHSPEC(val);
2498 if (val < 0 || val > MAXCHANNEL) {
2503 if (!wlc_valid_chanspec_db(wlc->cmi, chspec)) {
2508 if (!wlc->pub->up && IS_MBAND_UNLOCKED(wlc)) {
2509 if (wlc->band->bandunit !=
2510 CHSPEC_WLCBANDUNIT(chspec))
2511 wlc->bandinit_pending = true;
2513 wlc->bandinit_pending = false;
2516 wlc->default_bss->chanspec = chspec;
2517 /* wlc_BSSinit() will sanitize the rateset before using it.. */
2519 (WLC_BAND_PI_RADIO_CHANSPEC != chspec)) {
2520 wlc_set_home_chanspec(wlc, chspec);
2521 wlc_suspend_mac_and_wait(wlc);
2522 wlc_set_chanspec(wlc, chspec);
2523 wlc_enable_mac(wlc);
2529 if (val >= 1 && val <= RETRY_SHORT_MAX) {
2531 wlc->SRL = (u16) val;
2533 wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
2535 for (ac = 0; ac < AC_COUNT; ac++) {
2536 WLC_WME_RETRY_SHORT_SET(wlc, ac, wlc->SRL);
2538 wlc_wme_retries_write(wlc);
2544 if (val >= 1 && val <= 255) {
2546 wlc->LRL = (u16) val;
2548 wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
2550 for (ac = 0; ac < AC_COUNT; ac++) {
2551 WLC_WME_RETRY_LONG_SET(wlc, ac, wlc->LRL);
2553 wlc_wme_retries_write(wlc);
2558 case WLC_GET_CURR_RATESET:{
2559 wl_rateset_t *ret_rs = (wl_rateset_t *) arg;
2562 if (wlc->pub->associated)
2563 rs = ¤t_bss->rateset;
2565 rs = &wlc->default_bss->rateset;
2567 if (len < (int)(rs->count + sizeof(rs->count))) {
2568 bcmerror = -EOVERFLOW;
2572 /* Copy only legacy rateset section */
2573 ret_rs->count = rs->count;
2574 memcpy(&ret_rs->rates, &rs->rates, rs->count);
2578 case WLC_SET_RATESET:{
2580 wl_rateset_t *in_rs = (wl_rateset_t *) arg;
2582 if (len < (int)(in_rs->count + sizeof(in_rs->count))) {
2583 bcmerror = -EOVERFLOW;
2587 if (in_rs->count > WLC_NUMRATES) {
2588 bcmerror = -ENOBUFS;
2592 memset(&rs, 0, sizeof(wlc_rateset_t));
2594 /* Copy only legacy rateset section */
2595 rs.count = in_rs->count;
2596 memcpy(&rs.rates, &in_rs->rates, rs.count);
2598 /* merge rateset coming in with the current mcsset */
2599 if (N_ENAB(wlc->pub)) {
2600 if (bsscfg->associated)
2602 ¤t_bss->rateset.mcs[0],
2606 &wlc->default_bss->rateset.mcs[0],
2610 bcmerror = wlc_set_rateset(wlc, &rs);
2613 wlc_ofdm_rateset_war(wlc);
2618 case WLC_SET_BCNPRD:
2619 /* range [1, 0xffff] */
2620 if (val >= DOT11_MIN_BEACON_PERIOD
2621 && val <= DOT11_MAX_BEACON_PERIOD) {
2622 wlc->default_bss->beacon_period = (u16) val;
2627 case WLC_GET_PHYLIST:
2629 unsigned char *cp = arg;
2631 bcmerror = -EOVERFLOW;
2635 if (WLCISNPHY(wlc->band)) {
2637 } else if (WLCISLCNPHY(wlc->band)) {
2639 } else if (WLCISSSLPNPHY(wlc->band)) {
2646 case WLC_SET_SHORTSLOT_OVERRIDE:
2647 if ((val != WLC_SHORTSLOT_AUTO) &&
2648 (val != WLC_SHORTSLOT_OFF) && (val != WLC_SHORTSLOT_ON)) {
2653 wlc->shortslot_override = (s8) val;
2655 /* shortslot is an 11g feature, so no more work if we are
2656 * currently on the 5G band
2658 if (BAND_5G(wlc->band->bandtype))
2661 if (wlc->pub->up && wlc->pub->associated) {
2662 /* let watchdog or beacon processing update shortslot */
2663 } else if (wlc->pub->up) {
2664 /* unassociated shortslot is off */
2665 wlc_switch_shortslot(wlc, false);
2667 /* driver is down, so just update the wlc_info value */
2668 if (wlc->shortslot_override == WLC_SHORTSLOT_AUTO) {
2669 wlc->shortslot = false;
2672 (wlc->shortslot_override ==
2683 wlc->pub->bcmerror = bcmerror;
2689 * register watchdog and down handlers.
2691 int wlc_module_register(struct wlc_pub *pub,
2692 const char *name, void *hdl,
2693 watchdog_fn_t w_fn, down_fn_t d_fn)
2695 struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
2698 /* find an empty entry and just add, no duplication check! */
2699 for (i = 0; i < WLC_MAXMODULES; i++) {
2700 if (wlc->modulecb[i].name[0] == '\0') {
2701 strncpy(wlc->modulecb[i].name, name,
2702 sizeof(wlc->modulecb[i].name) - 1);
2703 wlc->modulecb[i].hdl = hdl;
2704 wlc->modulecb[i].watchdog_fn = w_fn;
2705 wlc->modulecb[i].down_fn = d_fn;
2713 /* unregister module callbacks */
2714 int wlc_module_unregister(struct wlc_pub *pub, const char *name, void *hdl)
2716 struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
2722 for (i = 0; i < WLC_MAXMODULES; i++) {
2723 if (!strcmp(wlc->modulecb[i].name, name) &&
2724 (wlc->modulecb[i].hdl == hdl)) {
2725 memset(&wlc->modulecb[i], 0, sizeof(struct modulecb));
2730 /* table not found! */
2734 /* Write WME tunable parameters for retransmit/max rate from wlc struct to ucode */
2735 static void wlc_wme_retries_write(struct wlc_info *wlc)
2739 /* Need clock to do this */
2743 for (ac = 0; ac < AC_COUNT; ac++) {
2744 wlc_write_shm(wlc, M_AC_TXLMT_ADDR(ac), wlc->wme_retries[ac]);
2749 static const char *supr_reason[] = {
2750 "None", "PMQ Entry", "Flush request",
2751 "Previous frag failure", "Channel mismatch",
2752 "Lifetime Expiry", "Underflow"
2755 static void wlc_print_txs_status(u16 s)
2757 printk(KERN_DEBUG "[15:12] %d frame attempts\n",
2758 (s & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT);
2759 printk(KERN_DEBUG " [11:8] %d rts attempts\n",
2760 (s & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT);
2761 printk(KERN_DEBUG " [7] %d PM mode indicated\n",
2762 ((s & TX_STATUS_PMINDCTD) ? 1 : 0));
2763 printk(KERN_DEBUG " [6] %d intermediate status\n",
2764 ((s & TX_STATUS_INTERMEDIATE) ? 1 : 0));
2765 printk(KERN_DEBUG " [5] %d AMPDU\n",
2766 (s & TX_STATUS_AMPDU) ? 1 : 0);
2767 printk(KERN_DEBUG " [4:2] %d Frame Suppressed Reason (%s)\n",
2768 ((s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT),
2769 supr_reason[(s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT]);
2770 printk(KERN_DEBUG " [1] %d acked\n",
2771 ((s & TX_STATUS_ACK_RCV) ? 1 : 0));
2775 void wlc_print_txstatus(tx_status_t *txs)
2778 u16 s = txs->status;
2779 u16 ackphyrxsh = txs->ackphyrxsh;
2781 printk(KERN_DEBUG "\ntxpkt (MPDU) Complete\n");
2783 printk(KERN_DEBUG "FrameID: %04x ", txs->frameid);
2784 printk(KERN_DEBUG "TxStatus: %04x", s);
2785 printk(KERN_DEBUG "\n");
2787 wlc_print_txs_status(s);
2789 printk(KERN_DEBUG "LastTxTime: %04x ", txs->lasttxtime);
2790 printk(KERN_DEBUG "Seq: %04x ", txs->sequence);
2791 printk(KERN_DEBUG "PHYTxStatus: %04x ", txs->phyerr);
2792 printk(KERN_DEBUG "RxAckRSSI: %04x ",
2793 (ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT);
2794 printk(KERN_DEBUG "RxAckSQ: %04x",
2795 (ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
2796 printk(KERN_DEBUG "\n");
2797 #endif /* defined(BCMDBG) */
2800 void wlc_statsupd(struct wlc_info *wlc)
2810 /* if driver down, make no sense to update stats */
2815 /* save last rx fifo 0 overflow count */
2816 rxf0ovfl = wlc->core->macstat_snapshot->rxf0ovfl;
2818 /* save last tx fifo underflow count */
2819 for (i = 0; i < NFIFO; i++)
2820 txfunfl[i] = wlc->core->macstat_snapshot->txfunfl[i];
2823 /* Read mac stats from contiguous shared memory */
2824 wlc_bmac_copyfrom_shm(wlc->hw, M_UCODE_MACSTAT,
2825 &macstats, sizeof(macstat_t));
2828 /* check for rx fifo 0 overflow */
2829 delta = (u16) (wlc->core->macstat_snapshot->rxf0ovfl - rxf0ovfl);
2831 wiphy_err(wlc->wiphy, "wl%d: %u rx fifo 0 overflows!\n",
2832 wlc->pub->unit, delta);
2834 /* check for tx fifo underflows */
2835 for (i = 0; i < NFIFO; i++) {
2837 (u16) (wlc->core->macstat_snapshot->txfunfl[i] -
2840 wiphy_err(wlc->wiphy, "wl%d: %u tx fifo %d underflows!"
2841 "\n", wlc->pub->unit, delta, i);
2845 /* merge counters from dma module */
2846 for (i = 0; i < NFIFO; i++) {
2847 if (wlc->hw->di[i]) {
2848 dma_counterreset(wlc->hw->di[i]);
2853 bool wlc_chipmatch(u16 vendor, u16 device)
2855 if (vendor != PCI_VENDOR_ID_BROADCOM) {
2856 pr_err("wlc_chipmatch: unknown vendor id %04x\n", vendor);
2860 if (device == BCM43224_D11N_ID_VEN1)
2862 if ((device == BCM43224_D11N_ID) || (device == BCM43225_D11N2G_ID))
2864 if (device == BCM4313_D11N2G_ID)
2866 if ((device == BCM43236_D11N_ID) || (device == BCM43236_D11N2G_ID))
2869 pr_err("wlc_chipmatch: unknown device id %04x\n", device);
2874 void wlc_print_txdesc(d11txh_t *txh)
2876 u16 mtcl = le16_to_cpu(txh->MacTxControlLow);
2877 u16 mtch = le16_to_cpu(txh->MacTxControlHigh);
2878 u16 mfc = le16_to_cpu(txh->MacFrameControl);
2879 u16 tfest = le16_to_cpu(txh->TxFesTimeNormal);
2880 u16 ptcw = le16_to_cpu(txh->PhyTxControlWord);
2881 u16 ptcw_1 = le16_to_cpu(txh->PhyTxControlWord_1);
2882 u16 ptcw_1_Fbr = le16_to_cpu(txh->PhyTxControlWord_1_Fbr);
2883 u16 ptcw_1_Rts = le16_to_cpu(txh->PhyTxControlWord_1_Rts);
2884 u16 ptcw_1_FbrRts = le16_to_cpu(txh->PhyTxControlWord_1_FbrRts);
2885 u16 mainrates = le16_to_cpu(txh->MainRates);
2886 u16 xtraft = le16_to_cpu(txh->XtraFrameTypes);
2888 u8 *ra = txh->TxFrameRA;
2889 u16 tfestfb = le16_to_cpu(txh->TxFesTimeFallback);
2890 u8 *rtspfb = txh->RTSPLCPFallback;
2891 u16 rtsdfb = le16_to_cpu(txh->RTSDurFallback);
2892 u8 *fragpfb = txh->FragPLCPFallback;
2893 u16 fragdfb = le16_to_cpu(txh->FragDurFallback);
2894 u16 mmodelen = le16_to_cpu(txh->MModeLen);
2895 u16 mmodefbrlen = le16_to_cpu(txh->MModeFbrLen);
2896 u16 tfid = le16_to_cpu(txh->TxFrameID);
2897 u16 txs = le16_to_cpu(txh->TxStatus);
2898 u16 mnmpdu = le16_to_cpu(txh->MaxNMpdus);
2899 u16 mabyte = le16_to_cpu(txh->MaxABytes_MRT);
2900 u16 mabyte_f = le16_to_cpu(txh->MaxABytes_FBR);
2901 u16 mmbyte = le16_to_cpu(txh->MinMBytes);
2903 u8 *rtsph = txh->RTSPhyHeader;
2904 struct ieee80211_rts rts = txh->rts_frame;
2907 /* add plcp header along with txh descriptor */
2908 printk(KERN_DEBUG "Raw TxDesc + plcp header:\n");
2909 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
2910 txh, sizeof(d11txh_t) + 48);
2912 printk(KERN_DEBUG "TxCtlLow: %04x ", mtcl);
2913 printk(KERN_DEBUG "TxCtlHigh: %04x ", mtch);
2914 printk(KERN_DEBUG "FC: %04x ", mfc);
2915 printk(KERN_DEBUG "FES Time: %04x\n", tfest);
2916 printk(KERN_DEBUG "PhyCtl: %04x%s ", ptcw,
2917 (ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
2918 printk(KERN_DEBUG "PhyCtl_1: %04x ", ptcw_1);
2919 printk(KERN_DEBUG "PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
2920 printk(KERN_DEBUG "PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
2921 printk(KERN_DEBUG "PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
2922 printk(KERN_DEBUG "MainRates: %04x ", mainrates);
2923 printk(KERN_DEBUG "XtraFrameTypes: %04x ", xtraft);
2924 printk(KERN_DEBUG "\n");
2926 bcm_format_hex(hexbuf, iv, sizeof(txh->IV));
2927 printk(KERN_DEBUG "SecIV: %s\n", hexbuf);
2928 bcm_format_hex(hexbuf, ra, sizeof(txh->TxFrameRA));
2929 printk(KERN_DEBUG "RA: %s\n", hexbuf);
2931 printk(KERN_DEBUG "Fb FES Time: %04x ", tfestfb);
2932 bcm_format_hex(hexbuf, rtspfb, sizeof(txh->RTSPLCPFallback));
2933 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
2934 printk(KERN_DEBUG "RTS DUR: %04x ", rtsdfb);
2935 bcm_format_hex(hexbuf, fragpfb, sizeof(txh->FragPLCPFallback));
2936 printk(KERN_DEBUG "PLCP: %s ", hexbuf);
2937 printk(KERN_DEBUG "DUR: %04x", fragdfb);
2938 printk(KERN_DEBUG "\n");
2940 printk(KERN_DEBUG "MModeLen: %04x ", mmodelen);
2941 printk(KERN_DEBUG "MModeFbrLen: %04x\n", mmodefbrlen);
2943 printk(KERN_DEBUG "FrameID: %04x\n", tfid);
2944 printk(KERN_DEBUG "TxStatus: %04x\n", txs);
2946 printk(KERN_DEBUG "MaxNumMpdu: %04x\n", mnmpdu);
2947 printk(KERN_DEBUG "MaxAggbyte: %04x\n", mabyte);
2948 printk(KERN_DEBUG "MaxAggbyte_fb: %04x\n", mabyte_f);
2949 printk(KERN_DEBUG "MinByte: %04x\n", mmbyte);
2951 bcm_format_hex(hexbuf, rtsph, sizeof(txh->RTSPhyHeader));
2952 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
2953 bcm_format_hex(hexbuf, (u8 *) &rts, sizeof(txh->rts_frame));
2954 printk(KERN_DEBUG "RTS Frame: %s", hexbuf);
2955 printk(KERN_DEBUG "\n");
2957 #endif /* defined(BCMDBG) */
2960 void wlc_print_rxh(d11rxhdr_t *rxh)
2962 u16 len = rxh->RxFrameSize;
2963 u16 phystatus_0 = rxh->PhyRxStatus_0;
2964 u16 phystatus_1 = rxh->PhyRxStatus_1;
2965 u16 phystatus_2 = rxh->PhyRxStatus_2;
2966 u16 phystatus_3 = rxh->PhyRxStatus_3;
2967 u16 macstatus1 = rxh->RxStatus1;
2968 u16 macstatus2 = rxh->RxStatus2;
2971 static const bcm_bit_desc_t macstat_flags[] = {
2972 {RXS_FCSERR, "FCSErr"},
2973 {RXS_RESPFRAMETX, "Reply"},
2974 {RXS_PBPRES, "PADDING"},
2975 {RXS_DECATMPT, "DeCr"},
2976 {RXS_DECERR, "DeCrErr"},
2977 {RXS_BCNSENT, "Bcn"},
2981 printk(KERN_DEBUG "Raw RxDesc:\n");
2982 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, rxh, sizeof(d11rxhdr_t));
2984 bcm_format_flags(macstat_flags, macstatus1, flagstr, 64);
2986 snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
2988 printk(KERN_DEBUG "RxFrameSize: %6s (%d)%s\n", lenbuf, len,
2989 (rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
2990 printk(KERN_DEBUG "RxPHYStatus: %04x %04x %04x %04x\n",
2991 phystatus_0, phystatus_1, phystatus_2, phystatus_3);
2992 printk(KERN_DEBUG "RxMACStatus: %x %s\n", macstatus1, flagstr);
2993 printk(KERN_DEBUG "RXMACaggtype: %x\n",
2994 (macstatus2 & RXS_AGGTYPE_MASK));
2995 printk(KERN_DEBUG "RxTSFTime: %04x\n", rxh->RxTSFTime);
2997 #endif /* defined(BCMDBG) */
2999 static u16 wlc_rate_shm_offset(struct wlc_info *wlc, u8 rate)
3001 return wlc_bmac_rate_shm_offset(wlc->hw, rate);
3004 /* Callback for device removed */
3007 * Attempts to queue a packet onto a multiple-precedence queue,
3008 * if necessary evicting a lower precedence packet from the queue.
3010 * 'prec' is the precedence number that has already been mapped
3011 * from the packet priority.
3013 * Returns true if packet consumed (queued), false if not.
3016 wlc_prec_enq(struct wlc_info *wlc, struct pktq *q, void *pkt, int prec)
3018 return wlc_prec_enq_head(wlc, q, pkt, prec, false);
3022 wlc_prec_enq_head(struct wlc_info *wlc, struct pktq *q, struct sk_buff *pkt,
3023 int prec, bool head)
3026 int eprec = -1; /* precedence to evict from */
3028 /* Determine precedence from which to evict packet, if any */
3029 if (pktq_pfull(q, prec))
3031 else if (pktq_full(q)) {
3032 p = bcm_pktq_peek_tail(q, &eprec);
3034 wiphy_err(wlc->wiphy, "%s: Failing: eprec %d > prec %d"
3035 "\n", __func__, eprec, prec);
3040 /* Evict if needed */
3042 bool discard_oldest;
3044 discard_oldest = AC_BITMAP_TST(wlc->wme_dp, eprec);
3046 /* Refuse newer packet unless configured to discard oldest */
3047 if (eprec == prec && !discard_oldest) {
3048 wiphy_err(wlc->wiphy, "%s: No where to go, prec == %d"
3049 "\n", __func__, prec);
3053 /* Evict packet according to discard policy */
3054 p = discard_oldest ? bcm_pktq_pdeq(q, eprec) :
3055 bcm_pktq_pdeq_tail(q, eprec);
3056 bcm_pkt_buf_free_skb(p);
3061 p = bcm_pktq_penq_head(q, prec, pkt);
3063 p = bcm_pktq_penq(q, prec, pkt);
3068 void wlc_txq_enq(void *ctx, struct scb *scb, struct sk_buff *sdu,
3071 struct wlc_info *wlc = (struct wlc_info *) ctx;
3072 struct wlc_txq_info *qi = wlc->pkt_queue; /* Check me */
3073 struct pktq *q = &qi->q;
3076 prio = sdu->priority;
3078 if (!wlc_prec_enq(wlc, q, sdu, prec)) {
3079 if (!EDCF_ENAB(wlc->pub)
3080 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL))
3081 wiphy_err(wlc->wiphy, "wl%d: wlc_txq_enq: txq overflow"
3082 "\n", wlc->pub->unit);
3085 * XXX we might hit this condtion in case
3086 * packet flooding from mac80211 stack
3088 bcm_pkt_buf_free_skb(sdu);
3091 /* Check if flow control needs to be turned on after enqueuing the packet
3092 * Don't turn on flow control if EDCF is enabled. Driver would make the decision on what
3093 * to drop instead of relying on stack to make the right decision
3095 if (!EDCF_ENAB(wlc->pub)
3096 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
3097 if (pktq_len(q) >= wlc->pub->tunables->datahiwat) {
3098 wlc_txflowcontrol(wlc, qi, ON, ALLPRIO);
3100 } else if (wlc->pub->_priofc) {
3101 if (pktq_plen(q, wlc_prio2prec_map[prio]) >=
3102 wlc->pub->tunables->datahiwat) {
3103 wlc_txflowcontrol(wlc, qi, ON, prio);
3109 wlc_sendpkt_mac80211(struct wlc_info *wlc, struct sk_buff *sdu,
3110 struct ieee80211_hw *hw)
3115 struct scb *scb = &global_scb;
3116 struct ieee80211_hdr *d11_header = (struct ieee80211_hdr *)(sdu->data);
3118 /* 802.11 standard requires management traffic to go at highest priority */
3119 prio = ieee80211_is_data(d11_header->frame_control) ? sdu->priority :
3121 fifo = prio2fifo[prio];
3124 (wlc_d11hdrs_mac80211(wlc, hw, pkt, scb, 0, 1, fifo, 0, NULL, 0)))
3126 wlc_txq_enq(wlc, scb, pkt, WLC_PRIO_TO_PREC(prio));
3131 void wlc_send_q(struct wlc_info *wlc)
3133 struct sk_buff *pkt[DOT11_MAXNUMFRAGS];
3136 int err = 0, i, count;
3138 struct wlc_txq_info *qi = wlc->pkt_queue;
3139 struct pktq *q = &qi->q;
3140 struct ieee80211_tx_info *tx_info;
3147 prec_map = wlc->tx_prec_map;
3149 /* Send all the enq'd pkts that we can.
3150 * Dequeue packets with precedence with empty HW fifo only
3152 while (prec_map && (pkt[0] = bcm_pktq_mdeq(q, prec_map, &prec))) {
3153 tx_info = IEEE80211_SKB_CB(pkt[0]);
3154 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
3155 err = wlc_sendampdu(wlc->ampdu, qi, pkt, prec);
3158 err = wlc_prep_pdu(wlc, pkt[0], &fifo);
3160 for (i = 0; i < count; i++) {
3161 wlc_txfifo(wlc, fifo, pkt[i], true, 1);
3166 if (err == -EBUSY) {
3167 bcm_pktq_penq_head(q, prec, pkt[0]);
3168 /* If send failed due to any other reason than a change in
3169 * HW FIFO condition, quit. Otherwise, read the new prec_map!
3171 if (prec_map == wlc->tx_prec_map)
3173 prec_map = wlc->tx_prec_map;
3177 /* Check if flow control needs to be turned off after sending the packet */
3178 if (!EDCF_ENAB(wlc->pub)
3179 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
3180 if (wlc_txflowcontrol_prio_isset(wlc, qi, ALLPRIO)
3181 && (pktq_len(q) < wlc->pub->tunables->datahiwat / 2)) {
3182 wlc_txflowcontrol(wlc, qi, OFF, ALLPRIO);
3184 } else if (wlc->pub->_priofc) {
3186 for (prio = MAXPRIO; prio >= 0; prio--) {
3187 if (wlc_txflowcontrol_prio_isset(wlc, qi, prio) &&
3188 (pktq_plen(q, wlc_prio2prec_map[prio]) <
3189 wlc->pub->tunables->datahiwat / 2)) {
3190 wlc_txflowcontrol(wlc, qi, OFF, prio);
3198 * bcmc_fid_generate:
3199 * Generate frame ID for a BCMC packet. The frag field is not used
3200 * for MC frames so is used as part of the sequence number.
3203 bcmc_fid_generate(struct wlc_info *wlc, struct wlc_bsscfg *bsscfg,
3208 frameid = le16_to_cpu(txh->TxFrameID) & ~(TXFID_SEQ_MASK |
3212 mc_fid_counter++) << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
3219 wlc_txfifo(struct wlc_info *wlc, uint fifo, struct sk_buff *p, bool commit,
3222 u16 frameid = INVALIDFID;
3225 txh = (d11txh_t *) (p->data);
3227 /* When a BC/MC frame is being committed to the BCMC fifo via DMA (NOT PIO), update
3228 * ucode or BSS info as appropriate.
3230 if (fifo == TX_BCMC_FIFO) {
3231 frameid = le16_to_cpu(txh->TxFrameID);
3235 if (WLC_WAR16165(wlc))
3236 wlc_war16165(wlc, true);
3239 /* Bump up pending count for if not using rpc. If rpc is used, this will be handled
3240 * in wlc_bmac_txfifo()
3243 TXPKTPENDINC(wlc, fifo, txpktpend);
3244 BCMMSG(wlc->wiphy, "pktpend inc %d to %d\n",
3245 txpktpend, TXPKTPENDGET(wlc, fifo));
3248 /* Commit BCMC sequence number in the SHM frame ID location */
3249 if (frameid != INVALIDFID)
3250 BCMCFID(wlc, frameid);
3252 if (dma_txfast(wlc->hw->di[fifo], p, commit) < 0) {
3253 wiphy_err(wlc->wiphy, "wlc_txfifo: fatal, toss frames !!!\n");
3258 wlc_compute_plcp(struct wlc_info *wlc, ratespec_t rspec, uint length, u8 *plcp)
3260 if (IS_MCS(rspec)) {
3261 wlc_compute_mimo_plcp(rspec, length, plcp);
3262 } else if (IS_OFDM(rspec)) {
3263 wlc_compute_ofdm_plcp(rspec, length, plcp);
3265 wlc_compute_cck_plcp(wlc, rspec, length, plcp);
3270 /* Rate: 802.11 rate code, length: PSDU length in octets */
3271 static void wlc_compute_mimo_plcp(ratespec_t rspec, uint length, u8 *plcp)
3273 u8 mcs = (u8) (rspec & RSPEC_RATE_MASK);
3275 if (RSPEC_IS40MHZ(rspec) || (mcs == 32))
3276 plcp[0] |= MIMO_PLCP_40MHZ;
3277 WLC_SET_MIMO_PLCP_LEN(plcp, length);
3278 plcp[3] = RSPEC_MIMOPLCP3(rspec); /* rspec already holds this byte */
3279 plcp[3] |= 0x7; /* set smoothing, not sounding ppdu & reserved */
3280 plcp[4] = 0; /* number of extension spatial streams bit 0 & 1 */
3284 /* Rate: 802.11 rate code, length: PSDU length in octets */
3286 wlc_compute_ofdm_plcp(ratespec_t rspec, u32 length, u8 *plcp)
3290 int rate = RSPEC2RATE(rspec);
3292 /* encode rate per 802.11a-1999 sec 17.3.4.1, with lsb transmitted first */
3293 rate_signal = rate_info[rate] & WLC_RATE_MASK;
3294 memset(plcp, 0, D11_PHY_HDR_LEN);
3295 D11A_PHY_HDR_SRATE((ofdm_phy_hdr_t *) plcp, rate_signal);
3297 tmp = (length & 0xfff) << 5;
3298 plcp[2] |= (tmp >> 16) & 0xff;
3299 plcp[1] |= (tmp >> 8) & 0xff;
3300 plcp[0] |= tmp & 0xff;
3306 * Compute PLCP, but only requires actual rate and length of pkt.
3307 * Rate is given in the driver standard multiple of 500 kbps.
3308 * le is set for 11 Mbps rate if necessary.
3309 * Broken out for PRQ.
3312 static void wlc_cck_plcp_set(struct wlc_info *wlc, int rate_500, uint length,
3326 usec = (length << 4) / 11;
3327 if ((length << 4) - (usec * 11) > 0)
3331 usec = (length << 3) / 11;
3332 if ((length << 3) - (usec * 11) > 0) {
3334 if ((usec * 11) - (length << 3) >= 8)
3335 le = D11B_PLCP_SIGNAL_LE;
3340 wiphy_err(wlc->wiphy, "wlc_cck_plcp_set: unsupported rate %d"
3342 rate_500 = WLC_RATE_1M;
3346 /* PLCP signal byte */
3347 plcp[0] = rate_500 * 5; /* r (500kbps) * 5 == r (100kbps) */
3348 /* PLCP service byte */
3349 plcp[1] = (u8) (le | D11B_PLCP_SIGNAL_LOCKED);
3350 /* PLCP length u16, little endian */
3351 plcp[2] = usec & 0xff;
3352 plcp[3] = (usec >> 8) & 0xff;
3358 /* Rate: 802.11 rate code, length: PSDU length in octets */
3359 static void wlc_compute_cck_plcp(struct wlc_info *wlc, ratespec_t rspec,
3360 uint length, u8 *plcp)
3362 int rate = RSPEC2RATE(rspec);
3364 wlc_cck_plcp_set(wlc, rate, length, plcp);
3367 /* wlc_compute_frame_dur()
3369 * Calculate the 802.11 MAC header DUR field for MPDU
3370 * DUR for a single frame = 1 SIFS + 1 ACK
3371 * DUR for a frame with following frags = 3 SIFS + 2 ACK + next frag time
3373 * rate MPDU rate in unit of 500kbps
3374 * next_frag_len next MPDU length in bytes
3375 * preamble_type use short/GF or long/MM PLCP header
3378 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate, u8 preamble_type,
3383 sifs = SIFS(wlc->band);
3386 dur += (u16) wlc_calc_ack_time(wlc, rate, preamble_type);
3388 if (next_frag_len) {
3389 /* Double the current DUR to get 2 SIFS + 2 ACKs */
3391 /* add another SIFS and the frag time */
3394 (u16) wlc_calc_frame_time(wlc, rate, preamble_type,
3400 /* wlc_compute_rtscts_dur()
3402 * Calculate the 802.11 MAC header DUR field for an RTS or CTS frame
3403 * DUR for normal RTS/CTS w/ frame = 3 SIFS + 1 CTS + next frame time + 1 ACK
3404 * DUR for CTS-TO-SELF w/ frame = 2 SIFS + next frame time + 1 ACK
3406 * cts cts-to-self or rts/cts
3407 * rts_rate rts or cts rate in unit of 500kbps
3408 * rate next MPDU rate in unit of 500kbps
3409 * frame_len next MPDU frame length in bytes
3412 wlc_compute_rtscts_dur(struct wlc_info *wlc, bool cts_only, ratespec_t rts_rate,
3413 ratespec_t frame_rate, u8 rts_preamble_type,
3414 u8 frame_preamble_type, uint frame_len, bool ba)
3418 sifs = SIFS(wlc->band);
3420 if (!cts_only) { /* RTS/CTS */
3423 (u16) wlc_calc_cts_time(wlc, rts_rate,
3425 } else { /* CTS-TO-SELF */
3430 (u16) wlc_calc_frame_time(wlc, frame_rate, frame_preamble_type,
3434 (u16) wlc_calc_ba_time(wlc, frame_rate,
3435 WLC_SHORT_PREAMBLE);
3438 (u16) wlc_calc_ack_time(wlc, frame_rate,
3439 frame_preamble_type);
3443 u16 wlc_phytxctl1_calc(struct wlc_info *wlc, ratespec_t rspec)
3448 if (WLCISLCNPHY(wlc->band)) {
3449 bw = PHY_TXC1_BW_20MHZ;
3451 bw = RSPEC_GET_BW(rspec);
3452 /* 10Mhz is not supported yet */
3453 if (bw < PHY_TXC1_BW_20MHZ) {
3454 wiphy_err(wlc->wiphy, "wlc_phytxctl1_calc: bw %d is "
3455 "not supported yet, set to 20L\n", bw);
3456 bw = PHY_TXC1_BW_20MHZ;
3460 if (IS_MCS(rspec)) {
3461 uint mcs = rspec & RSPEC_RATE_MASK;
3463 /* bw, stf, coding-type is part of RSPEC_PHYTXBYTE2 returns */
3464 phyctl1 = RSPEC_PHYTXBYTE2(rspec);
3465 /* set the upper byte of phyctl1 */
3466 phyctl1 |= (mcs_table[mcs].tx_phy_ctl3 << 8);
3467 } else if (IS_CCK(rspec) && !WLCISLCNPHY(wlc->band)
3468 && !WLCISSSLPNPHY(wlc->band)) {
3469 /* In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate */
3470 /* Eventually MIMOPHY would also be converted to this format */
3471 /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */
3472 phyctl1 = (bw | (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
3473 } else { /* legacy OFDM/CCK */
3475 /* get the phyctl byte from rate phycfg table */
3476 phycfg = wlc_rate_legacy_phyctl(RSPEC2RATE(rspec));
3478 wiphy_err(wlc->wiphy, "wlc_phytxctl1_calc: wrong "
3479 "legacy OFDM/CCK rate\n");
3482 /* set the upper byte of phyctl1 */
3484 (bw | (phycfg << 8) |
3485 (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
3491 wlc_rspec_to_rts_rspec(struct wlc_info *wlc, ratespec_t rspec, bool use_rspec,
3494 ratespec_t rts_rspec = 0;
3497 /* use frame rate as rts rate */
3500 } else if (wlc->band->gmode && wlc->protection->_g && !IS_CCK(rspec)) {
3501 /* Use 11Mbps as the g protection RTS target rate and fallback.
3502 * Use the WLC_BASIC_RATE() lookup to find the best basic rate under the
3503 * target in case 11 Mbps is not Basic.
3504 * 6 and 9 Mbps are not usually selected by rate selection, but even
3505 * if the OFDM rate we are protecting is 6 or 9 Mbps, 11 is more robust.
3507 rts_rspec = WLC_BASIC_RATE(wlc, WLC_RATE_11M);
3509 /* calculate RTS rate and fallback rate based on the frame rate
3510 * RTS must be sent at a basic rate since it is a
3511 * control frame, sec 9.6 of 802.11 spec
3513 rts_rspec = WLC_BASIC_RATE(wlc, rspec);
3516 if (WLC_PHY_11N_CAP(wlc->band)) {
3517 /* set rts txbw to correct side band */
3518 rts_rspec &= ~RSPEC_BW_MASK;
3520 /* if rspec/rspec_fallback is 40MHz, then send RTS on both 20MHz channel
3521 * (DUP), otherwise send RTS on control channel
3523 if (RSPEC_IS40MHZ(rspec) && !IS_CCK(rts_rspec))
3524 rts_rspec |= (PHY_TXC1_BW_40MHZ_DUP << RSPEC_BW_SHIFT);
3526 rts_rspec |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
3528 /* pick siso/cdd as default for ofdm */
3529 if (IS_OFDM(rts_rspec)) {
3530 rts_rspec &= ~RSPEC_STF_MASK;
3531 rts_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
3538 * Add d11txh_t, cck_phy_hdr_t.
3540 * 'p' data must start with 802.11 MAC header
3541 * 'p' must allow enough bytes of local headers to be "pushed" onto the packet
3543 * headroom == D11_PHY_HDR_LEN + D11_TXH_LEN (D11_TXH_LEN is now 104 bytes)
3547 wlc_d11hdrs_mac80211(struct wlc_info *wlc, struct ieee80211_hw *hw,
3548 struct sk_buff *p, struct scb *scb, uint frag,
3549 uint nfrags, uint queue, uint next_frag_len,
3550 wsec_key_t *key, ratespec_t rspec_override)
3552 struct ieee80211_hdr *h;
3554 u8 *plcp, plcp_fallback[D11_PHY_HDR_LEN];
3555 int len, phylen, rts_phylen;
3556 u16 mch, phyctl, xfts, mainrates;
3557 u16 seq = 0, mcl = 0, status = 0, frameid = 0;
3558 ratespec_t rspec[2] = { WLC_RATE_1M, WLC_RATE_1M }, rts_rspec[2] = {
3559 WLC_RATE_1M, WLC_RATE_1M};
3560 bool use_rts = false;
3561 bool use_cts = false;
3562 bool use_rifs = false;
3563 bool short_preamble[2] = { false, false };
3564 u8 preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
3565 u8 rts_preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
3566 u8 *rts_plcp, rts_plcp_fallback[D11_PHY_HDR_LEN];
3567 struct ieee80211_rts *rts = NULL;
3571 bool hwtkmic = false;
3572 u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ;
3573 #define ANTCFG_NONE 0xFF
3574 u8 antcfg = ANTCFG_NONE;
3575 u8 fbantcfg = ANTCFG_NONE;
3576 uint phyctl1_stf = 0;
3578 struct ieee80211_tx_rate *txrate[2];
3580 struct ieee80211_tx_info *tx_info;
3583 u8 mimo_preamble_type;
3585 /* locate 802.11 MAC header */
3586 h = (struct ieee80211_hdr *)(p->data);
3587 qos = ieee80211_is_data_qos(h->frame_control);
3589 /* compute length of frame in bytes for use in PLCP computations */
3590 len = bcm_pkttotlen(p);
3591 phylen = len + FCS_LEN;
3593 /* If WEP enabled, add room in phylen for the additional bytes of
3594 * ICV which MAC generates. We do NOT add the additional bytes to
3595 * the packet itself, thus phylen = packet length + ICV_LEN + FCS_LEN
3599 phylen += key->icv_len;
3603 tx_info = IEEE80211_SKB_CB(p);
3606 plcp = skb_push(p, D11_PHY_HDR_LEN);
3608 /* add Broadcom tx descriptor header */
3609 txh = (d11txh_t *) skb_push(p, D11_TXH_LEN);
3610 memset(txh, 0, D11_TXH_LEN);
3613 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
3614 /* non-AP STA should never use BCMC queue */
3615 if (queue == TX_BCMC_FIFO) {
3616 wiphy_err(wlc->wiphy, "wl%d: %s: ASSERT queue == "
3617 "TX_BCMC!\n", WLCWLUNIT(wlc), __func__);
3618 frameid = bcmc_fid_generate(wlc, NULL, txh);
3620 /* Increment the counter for first fragment */
3621 if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) {
3622 SCB_SEQNUM(scb, p->priority)++;
3625 /* extract fragment number from frame first */
3626 seq = le16_to_cpu(seq) & FRAGNUM_MASK;
3627 seq |= (SCB_SEQNUM(scb, p->priority) << SEQNUM_SHIFT);
3628 h->seq_ctrl = cpu_to_le16(seq);
3630 frameid = ((seq << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
3631 (queue & TXFID_QUEUE_MASK);
3634 frameid |= queue & TXFID_QUEUE_MASK;
3636 /* set the ignpmq bit for all pkts tx'd in PS mode and for beacons */
3637 if (SCB_PS(scb) || ieee80211_is_beacon(h->frame_control))
3638 mcl |= TXC_IGNOREPMQ;
3640 txrate[0] = tx_info->control.rates;
3641 txrate[1] = txrate[0] + 1;
3643 /* if rate control algorithm didn't give us a fallback rate, use the primary rate */
3644 if (txrate[1]->idx < 0) {
3645 txrate[1] = txrate[0];
3648 for (k = 0; k < hw->max_rates; k++) {
3650 txrate[k]->flags & IEEE80211_TX_RC_MCS ? true : false;
3652 if ((txrate[k]->idx >= 0)
3653 && (txrate[k]->idx <
3654 hw->wiphy->bands[tx_info->band]->n_bitrates)) {
3656 hw->wiphy->bands[tx_info->band]->
3657 bitrates[txrate[k]->idx].hw_value;
3660 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE ?
3663 rate_val[k] = WLC_RATE_1M;
3666 rate_val[k] = txrate[k]->idx;
3668 /* Currently only support same setting for primay and fallback rates.
3669 * Unify flags for each rate into a single value for the frame
3673 flags & IEEE80211_TX_RC_USE_RTS_CTS ? true : false;
3676 flags & IEEE80211_TX_RC_USE_CTS_PROTECT ? true : false;
3679 rate_val[k] |= NRATE_MCS_INUSE;
3681 rspec[k] = mac80211_wlc_set_nrate(wlc, wlc->band, rate_val[k]);
3683 /* (1) RATE: determine and validate primary rate and fallback rates */
3684 if (!RSPEC_ACTIVE(rspec[k])) {
3685 rspec[k] = WLC_RATE_1M;
3687 if (!is_multicast_ether_addr(h->addr1)) {
3688 /* set tx antenna config */
3689 wlc_antsel_antcfg_get(wlc->asi, false, false, 0,
3690 0, &antcfg, &fbantcfg);
3695 phyctl1_stf = wlc->stf->ss_opmode;
3697 if (N_ENAB(wlc->pub)) {
3698 for (k = 0; k < hw->max_rates; k++) {
3699 /* apply siso/cdd to single stream mcs's or ofdm if rspec is auto selected */
3700 if (((IS_MCS(rspec[k]) &&
3701 IS_SINGLE_STREAM(rspec[k] & RSPEC_RATE_MASK)) ||
3703 && ((rspec[k] & RSPEC_OVERRIDE_MCS_ONLY)
3704 || !(rspec[k] & RSPEC_OVERRIDE))) {
3705 rspec[k] &= ~(RSPEC_STF_MASK | RSPEC_STC_MASK);
3707 /* For SISO MCS use STBC if possible */
3708 if (IS_MCS(rspec[k])
3709 && WLC_STF_SS_STBC_TX(wlc, scb)) {
3712 stc = 1; /* Nss for single stream is always 1 */
3714 (PHY_TXC1_MODE_STBC <<
3715 RSPEC_STF_SHIFT) | (stc <<
3719 (phyctl1_stf << RSPEC_STF_SHIFT);
3722 /* Is the phy configured to use 40MHZ frames? If so then pick the desired txbw */
3723 if (CHSPEC_WLC_BW(wlc->chanspec) == WLC_40_MHZ) {
3724 /* default txbw is 20in40 SB */
3725 mimo_ctlchbw = mimo_txbw =
3726 CHSPEC_SB_UPPER(WLC_BAND_PI_RADIO_CHANSPEC)
3727 ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ;
3729 if (IS_MCS(rspec[k])) {
3730 /* mcs 32 must be 40b/w DUP */
3731 if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
3733 PHY_TXC1_BW_40MHZ_DUP;
3735 } else if (wlc->mimo_40txbw != AUTO)
3736 mimo_txbw = wlc->mimo_40txbw;
3737 /* else check if dst is using 40 Mhz */
3738 else if (scb->flags & SCB_IS40)
3739 mimo_txbw = PHY_TXC1_BW_40MHZ;
3740 } else if (IS_OFDM(rspec[k])) {
3741 if (wlc->ofdm_40txbw != AUTO)
3742 mimo_txbw = wlc->ofdm_40txbw;
3744 if (wlc->cck_40txbw != AUTO)
3745 mimo_txbw = wlc->cck_40txbw;
3748 /* mcs32 is 40 b/w only.
3749 * This is possible for probe packets on a STA during SCAN
3751 if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
3753 rspec[k] = RSPEC_MIMORATE;
3755 mimo_txbw = PHY_TXC1_BW_20MHZ;
3758 /* Set channel width */
3759 rspec[k] &= ~RSPEC_BW_MASK;
3760 if ((k == 0) || ((k > 0) && IS_MCS(rspec[k])))
3761 rspec[k] |= (mimo_txbw << RSPEC_BW_SHIFT);
3763 rspec[k] |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
3767 if (IS_MCS(rspec[k])
3768 && (txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
3769 rspec[k] |= RSPEC_SHORT_GI;
3770 else if (!(txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
3771 rspec[k] &= ~RSPEC_SHORT_GI;
3773 rspec[k] &= ~RSPEC_SHORT_GI;
3776 mimo_preamble_type = WLC_MM_PREAMBLE;
3777 if (txrate[k]->flags & IEEE80211_TX_RC_GREEN_FIELD)
3778 mimo_preamble_type = WLC_GF_PREAMBLE;
3780 if ((txrate[k]->flags & IEEE80211_TX_RC_MCS)
3781 && (!IS_MCS(rspec[k]))) {
3782 wiphy_err(wlc->wiphy, "wl%d: %s: IEEE80211_TX_"
3783 "RC_MCS != IS_MCS(rspec)\n",
3784 WLCWLUNIT(wlc), __func__);
3787 if (IS_MCS(rspec[k])) {
3788 preamble_type[k] = mimo_preamble_type;
3790 /* if SGI is selected, then forced mm for single stream */
3791 if ((rspec[k] & RSPEC_SHORT_GI)
3792 && IS_SINGLE_STREAM(rspec[k] &
3794 preamble_type[k] = WLC_MM_PREAMBLE;
3798 /* should be better conditionalized */
3799 if (!IS_MCS(rspec[0])
3800 && (tx_info->control.rates[0].
3801 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
3802 preamble_type[k] = WLC_SHORT_PREAMBLE;
3805 for (k = 0; k < hw->max_rates; k++) {
3806 /* Set ctrlchbw as 20Mhz */
3807 rspec[k] &= ~RSPEC_BW_MASK;
3808 rspec[k] |= (PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT);
3810 /* for nphy, stf of ofdm frames must follow policies */
3811 if (WLCISNPHY(wlc->band) && IS_OFDM(rspec[k])) {
3812 rspec[k] &= ~RSPEC_STF_MASK;
3813 rspec[k] |= phyctl1_stf << RSPEC_STF_SHIFT;
3818 /* Reset these for use with AMPDU's */
3819 txrate[0]->count = 0;
3820 txrate[1]->count = 0;
3822 /* (2) PROTECTION, may change rspec */
3823 if ((ieee80211_is_data(h->frame_control) ||
3824 ieee80211_is_mgmt(h->frame_control)) &&
3825 (phylen > wlc->RTSThresh) && !is_multicast_ether_addr(h->addr1))
3828 /* (3) PLCP: determine PLCP header and MAC duration, fill d11txh_t */
3829 wlc_compute_plcp(wlc, rspec[0], phylen, plcp);
3830 wlc_compute_plcp(wlc, rspec[1], phylen, plcp_fallback);
3831 memcpy(&txh->FragPLCPFallback,
3832 plcp_fallback, sizeof(txh->FragPLCPFallback));
3834 /* Length field now put in CCK FBR CRC field */
3835 if (IS_CCK(rspec[1])) {
3836 txh->FragPLCPFallback[4] = phylen & 0xff;
3837 txh->FragPLCPFallback[5] = (phylen & 0xff00) >> 8;
3840 /* MIMO-RATE: need validation ?? */
3842 IS_OFDM(rspec[0]) ? D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) plcp) :
3845 /* DUR field for main rate */
3846 if (!ieee80211_is_pspoll(h->frame_control) &&
3847 !is_multicast_ether_addr(h->addr1) && !use_rifs) {
3849 wlc_compute_frame_dur(wlc, rspec[0], preamble_type[0],
3851 h->duration_id = cpu_to_le16(durid);
3852 } else if (use_rifs) {
3853 /* NAV protect to end of next max packet size */
3855 (u16) wlc_calc_frame_time(wlc, rspec[0],
3857 DOT11_MAX_FRAG_LEN);
3858 durid += RIFS_11N_TIME;
3859 h->duration_id = cpu_to_le16(durid);
3862 /* DUR field for fallback rate */
3863 if (ieee80211_is_pspoll(h->frame_control))
3864 txh->FragDurFallback = h->duration_id;
3865 else if (is_multicast_ether_addr(h->addr1) || use_rifs)
3866 txh->FragDurFallback = 0;
3868 durid = wlc_compute_frame_dur(wlc, rspec[1],
3869 preamble_type[1], next_frag_len);
3870 txh->FragDurFallback = cpu_to_le16(durid);
3873 /* (4) MAC-HDR: MacTxControlLow */
3875 mcl |= TXC_STARTMSDU;
3877 if (!is_multicast_ether_addr(h->addr1))
3878 mcl |= TXC_IMMEDACK;
3880 if (BAND_5G(wlc->band->bandtype))
3881 mcl |= TXC_FREQBAND_5G;
3883 if (CHSPEC_IS40(WLC_BAND_PI_RADIO_CHANSPEC))
3886 /* set AMIC bit if using hardware TKIP MIC */
3890 txh->MacTxControlLow = cpu_to_le16(mcl);
3892 /* MacTxControlHigh */
3895 /* Set fallback rate preamble type */
3896 if ((preamble_type[1] == WLC_SHORT_PREAMBLE) ||
3897 (preamble_type[1] == WLC_GF_PREAMBLE)) {
3898 if (RSPEC2RATE(rspec[1]) != WLC_RATE_1M)
3899 mch |= TXC_PREAMBLE_DATA_FB_SHORT;
3902 /* MacFrameControl */
3903 memcpy(&txh->MacFrameControl, &h->frame_control, sizeof(u16));
3904 txh->TxFesTimeNormal = cpu_to_le16(0);
3906 txh->TxFesTimeFallback = cpu_to_le16(0);
3909 memcpy(&txh->TxFrameRA, &h->addr1, ETH_ALEN);
3912 txh->TxFrameID = cpu_to_le16(frameid);
3914 /* TxStatus, Note the case of recreating the first frag of a suppressed frame
3915 * then we may need to reset the retry cnt's via the status reg
3917 txh->TxStatus = cpu_to_le16(status);
3919 /* extra fields for ucode AMPDU aggregation, the new fields are added to
3920 * the END of previous structure so that it's compatible in driver.
3922 txh->MaxNMpdus = cpu_to_le16(0);
3923 txh->MaxABytes_MRT = cpu_to_le16(0);
3924 txh->MaxABytes_FBR = cpu_to_le16(0);
3925 txh->MinMBytes = cpu_to_le16(0);
3927 /* (5) RTS/CTS: determine RTS/CTS PLCP header and MAC duration, furnish d11txh_t */
3928 /* RTS PLCP header and RTS frame */
3929 if (use_rts || use_cts) {
3930 if (use_rts && use_cts)
3933 for (k = 0; k < 2; k++) {
3934 rts_rspec[k] = wlc_rspec_to_rts_rspec(wlc, rspec[k],
3939 if (!IS_OFDM(rts_rspec[0]) &&
3940 !((RSPEC2RATE(rts_rspec[0]) == WLC_RATE_1M) ||
3941 (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
3942 rts_preamble_type[0] = WLC_SHORT_PREAMBLE;
3943 mch |= TXC_PREAMBLE_RTS_MAIN_SHORT;
3946 if (!IS_OFDM(rts_rspec[1]) &&
3947 !((RSPEC2RATE(rts_rspec[1]) == WLC_RATE_1M) ||
3948 (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
3949 rts_preamble_type[1] = WLC_SHORT_PREAMBLE;
3950 mch |= TXC_PREAMBLE_RTS_FB_SHORT;
3953 /* RTS/CTS additions to MacTxControlLow */
3955 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDCTS);
3957 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDRTS);
3958 txh->MacTxControlLow |= cpu_to_le16(TXC_LONGFRAME);
3961 /* RTS PLCP header */
3962 rts_plcp = txh->RTSPhyHeader;
3964 rts_phylen = DOT11_CTS_LEN + FCS_LEN;
3966 rts_phylen = DOT11_RTS_LEN + FCS_LEN;
3968 wlc_compute_plcp(wlc, rts_rspec[0], rts_phylen, rts_plcp);
3970 /* fallback rate version of RTS PLCP header */
3971 wlc_compute_plcp(wlc, rts_rspec[1], rts_phylen,
3973 memcpy(&txh->RTSPLCPFallback, rts_plcp_fallback,
3974 sizeof(txh->RTSPLCPFallback));
3976 /* RTS frame fields... */
3977 rts = (struct ieee80211_rts *)&txh->rts_frame;
3979 durid = wlc_compute_rtscts_dur(wlc, use_cts, rts_rspec[0],
3980 rspec[0], rts_preamble_type[0],
3981 preamble_type[0], phylen, false);
3982 rts->duration = cpu_to_le16(durid);
3983 /* fallback rate version of RTS DUR field */
3984 durid = wlc_compute_rtscts_dur(wlc, use_cts,
3985 rts_rspec[1], rspec[1],
3986 rts_preamble_type[1],
3987 preamble_type[1], phylen, false);
3988 txh->RTSDurFallback = cpu_to_le16(durid);
3991 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
3992 IEEE80211_STYPE_CTS);
3994 memcpy(&rts->ra, &h->addr2, ETH_ALEN);
3996 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
3997 IEEE80211_STYPE_RTS);
3999 memcpy(&rts->ra, &h->addr1, 2 * ETH_ALEN);
4003 * low 8 bits: main frag rate/mcs,
4004 * high 8 bits: rts/cts rate/mcs
4006 mainrates |= (IS_OFDM(rts_rspec[0]) ?
4007 D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) rts_plcp) :
4010 memset((char *)txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN);
4011 memset((char *)&txh->rts_frame, 0,
4012 sizeof(struct ieee80211_rts));
4013 memset((char *)txh->RTSPLCPFallback, 0,
4014 sizeof(txh->RTSPLCPFallback));
4015 txh->RTSDurFallback = 0;
4018 #ifdef SUPPORT_40MHZ
4019 /* add null delimiter count */
4020 if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && IS_MCS(rspec)) {
4021 txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] =
4022 wlc_ampdu_null_delim_cnt(wlc->ampdu, scb, rspec, phylen);
4026 /* Now that RTS/RTS FB preamble types are updated, write the final value */
4027 txh->MacTxControlHigh = cpu_to_le16(mch);
4029 /* MainRates (both the rts and frag plcp rates have been calculated now) */
4030 txh->MainRates = cpu_to_le16(mainrates);
4032 /* XtraFrameTypes */
4033 xfts = FRAMETYPE(rspec[1], wlc->mimoft);
4034 xfts |= (FRAMETYPE(rts_rspec[0], wlc->mimoft) << XFTS_RTS_FT_SHIFT);
4035 xfts |= (FRAMETYPE(rts_rspec[1], wlc->mimoft) << XFTS_FBRRTS_FT_SHIFT);
4037 CHSPEC_CHANNEL(WLC_BAND_PI_RADIO_CHANSPEC) << XFTS_CHANNEL_SHIFT;
4038 txh->XtraFrameTypes = cpu_to_le16(xfts);
4040 /* PhyTxControlWord */
4041 phyctl = FRAMETYPE(rspec[0], wlc->mimoft);
4042 if ((preamble_type[0] == WLC_SHORT_PREAMBLE) ||
4043 (preamble_type[0] == WLC_GF_PREAMBLE)) {
4044 if (RSPEC2RATE(rspec[0]) != WLC_RATE_1M)
4045 phyctl |= PHY_TXC_SHORT_HDR;
4048 /* phytxant is properly bit shifted */
4049 phyctl |= wlc_stf_d11hdrs_phyctl_txant(wlc, rspec[0]);
4050 txh->PhyTxControlWord = cpu_to_le16(phyctl);
4052 /* PhyTxControlWord_1 */
4053 if (WLC_PHY_11N_CAP(wlc->band)) {
4056 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[0]);
4057 txh->PhyTxControlWord_1 = cpu_to_le16(phyctl1);
4058 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[1]);
4059 txh->PhyTxControlWord_1_Fbr = cpu_to_le16(phyctl1);
4061 if (use_rts || use_cts) {
4062 phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[0]);
4063 txh->PhyTxControlWord_1_Rts = cpu_to_le16(phyctl1);
4064 phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[1]);
4065 txh->PhyTxControlWord_1_FbrRts = cpu_to_le16(phyctl1);
4069 * For mcs frames, if mixedmode(overloaded with long preamble) is going to be set,
4070 * fill in non-zero MModeLen and/or MModeFbrLen
4071 * it will be unnecessary if they are separated
4073 if (IS_MCS(rspec[0]) && (preamble_type[0] == WLC_MM_PREAMBLE)) {
4075 wlc_calc_lsig_len(wlc, rspec[0], phylen);
4076 txh->MModeLen = cpu_to_le16(mmodelen);
4079 if (IS_MCS(rspec[1]) && (preamble_type[1] == WLC_MM_PREAMBLE)) {
4081 wlc_calc_lsig_len(wlc, rspec[1], phylen);
4082 txh->MModeFbrLen = cpu_to_le16(mmodefbrlen);
4086 ac = skb_get_queue_mapping(p);
4087 if (SCB_WME(scb) && qos && wlc->edcf_txop[ac]) {
4088 uint frag_dur, dur, dur_fallback;
4090 /* WME: Update TXOP threshold */
4091 if ((!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) && (frag == 0)) {
4093 wlc_calc_frame_time(wlc, rspec[0], preamble_type[0],
4097 /* 1 RTS or CTS-to-self frame */
4099 wlc_calc_cts_time(wlc, rts_rspec[0],
4100 rts_preamble_type[0]);
4102 wlc_calc_cts_time(wlc, rts_rspec[1],
4103 rts_preamble_type[1]);
4104 /* (SIFS + CTS) + SIFS + frame + SIFS + ACK */
4105 dur += le16_to_cpu(rts->duration);
4107 le16_to_cpu(txh->RTSDurFallback);
4108 } else if (use_rifs) {
4112 /* frame + SIFS + ACK */
4115 wlc_compute_frame_dur(wlc, rspec[0],
4116 preamble_type[0], 0);
4119 wlc_calc_frame_time(wlc, rspec[1],
4123 wlc_compute_frame_dur(wlc, rspec[1],
4124 preamble_type[1], 0);
4126 /* NEED to set TxFesTimeNormal (hard) */
4127 txh->TxFesTimeNormal = cpu_to_le16((u16) dur);
4128 /* NEED to set fallback rate version of TxFesTimeNormal (hard) */
4129 txh->TxFesTimeFallback =
4130 cpu_to_le16((u16) dur_fallback);
4132 /* update txop byte threshold (txop minus intraframe overhead) */
4133 if (wlc->edcf_txop[ac] >= (dur - frag_dur)) {
4138 wlc_calc_frame_len(wlc, rspec[0],
4144 /* range bound the fragthreshold */
4145 if (newfragthresh < DOT11_MIN_FRAG_LEN)
4148 else if (newfragthresh >
4149 wlc->usr_fragthresh)
4151 wlc->usr_fragthresh;
4152 /* update the fragthresh and do txc update */
4153 if (wlc->fragthresh[queue] !=
4154 (u16) newfragthresh) {
4155 wlc->fragthresh[queue] =
4156 (u16) newfragthresh;
4160 wiphy_err(wlc->wiphy, "wl%d: %s txop invalid "
4162 wlc->pub->unit, fifo_names[queue],
4163 RSPEC2RATE(rspec[0]));
4165 if (dur > wlc->edcf_txop[ac])
4166 wiphy_err(wlc->wiphy, "wl%d: %s: %s txop "
4167 "exceeded phylen %d/%d dur %d/%d\n",
4168 wlc->pub->unit, __func__,
4170 phylen, wlc->fragthresh[queue],
4171 dur, wlc->edcf_txop[ac]);
4178 void wlc_tbtt(struct wlc_info *wlc, d11regs_t *regs)
4180 struct wlc_bsscfg *cfg = wlc->cfg;
4183 /* DirFrmQ is now valid...defer setting until end of ATIM window */
4184 wlc->qvalid |= MCMD_DIRFRMQVAL;
4188 static void wlc_war16165(struct wlc_info *wlc, bool tx)
4191 /* the post-increment is used in STAY_AWAKE macro */
4192 if (wlc->txpend16165war++ == 0)
4193 wlc_set_ps_ctrl(wlc);
4195 wlc->txpend16165war--;
4196 if (wlc->txpend16165war == 0)
4197 wlc_set_ps_ctrl(wlc);
4201 /* process an individual tx_status_t */
4204 wlc_dotxstatus(struct wlc_info *wlc, tx_status_t *txs, u32 frm_tx2)
4209 struct scb *scb = NULL;
4211 int tx_rts, tx_frame_count, tx_rts_count;
4212 uint totlen, supr_status;
4214 struct ieee80211_hdr *h;
4216 struct ieee80211_tx_info *tx_info;
4217 struct ieee80211_tx_rate *txrate;
4220 (void)(frm_tx2); /* Compiler reference to avoid unused variable warning */
4222 /* discard intermediate indications for ucode with one legitimate case:
4223 * e.g. if "useRTS" is set. ucode did a successful rts/cts exchange, but the subsequent
4224 * tx of DATA failed. so it will start rts/cts from the beginning (resetting the rts
4225 * transmission count)
4227 if (!(txs->status & TX_STATUS_AMPDU)
4228 && (txs->status & TX_STATUS_INTERMEDIATE)) {
4229 wiphy_err(wlc->wiphy, "%s: INTERMEDIATE but not AMPDU\n",
4234 queue = txs->frameid & TXFID_QUEUE_MASK;
4235 if (queue >= NFIFO) {
4240 p = GETNEXTTXP(wlc, queue);
4241 if (WLC_WAR16165(wlc))
4242 wlc_war16165(wlc, false);
4246 txh = (d11txh_t *) (p->data);
4247 mcl = le16_to_cpu(txh->MacTxControlLow);
4250 if (WL_ERROR_ON()) {
4251 wiphy_err(wlc->wiphy, "phyerr 0x%x, rate 0x%x\n",
4252 txs->phyerr, txh->MainRates);
4253 wlc_print_txdesc(txh);
4255 wlc_print_txstatus(txs);
4258 if (txs->frameid != cpu_to_le16(txh->TxFrameID))
4260 tx_info = IEEE80211_SKB_CB(p);
4261 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
4263 if (tx_info->control.sta)
4264 scb = (struct scb *)tx_info->control.sta->drv_priv;
4266 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
4267 wlc_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
4271 supr_status = txs->status & TX_STATUS_SUPR_MASK;
4272 if (supr_status == TX_STATUS_SUPR_BADCH)
4274 "%s: Pkt tx suppressed, possibly channel %d\n",
4275 __func__, CHSPEC_CHANNEL(wlc->default_bss->chanspec));
4277 tx_rts = cpu_to_le16(txh->MacTxControlLow) & TXC_SENDRTS;
4279 (txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT;
4281 (txs->status & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT;
4283 lastframe = !ieee80211_has_morefrags(h->frame_control);
4286 wiphy_err(wlc->wiphy, "Not last frame!\n");
4289 ieee80211_tx_info_clear_status(tx_info);
4290 if (queue < AC_COUNT) {
4291 sfbl = WLC_WME_RETRY_SFB_GET(wlc, wme_fifo2ac[queue]);
4292 lfbl = WLC_WME_RETRY_LFB_GET(wlc, wme_fifo2ac[queue]);
4298 txrate = tx_info->status.rates;
4299 /* FIXME: this should use a combination of sfbl, lfbl depending on frame length and RTS setting */
4300 if ((tx_frame_count > sfbl) && (txrate[1].idx >= 0)) {
4301 /* rate selection requested a fallback rate and we used it */
4302 txrate->count = lfbl;
4303 txrate[1].count = tx_frame_count - lfbl;
4305 /* rate selection did not request fallback rate, or we didn't need it */
4306 txrate->count = tx_frame_count;
4307 /* rc80211_minstrel.c:minstrel_tx_status() expects unused rates to be marked with idx = -1 */
4309 txrate[1].count = 0;
4312 /* clear the rest of the rates */
4313 for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) {
4315 txrate[i].count = 0;
4318 if (txs->status & TX_STATUS_ACK_RCV)
4319 tx_info->flags |= IEEE80211_TX_STAT_ACK;
4322 totlen = bcm_pkttotlen(p);
4325 wlc_txfifo_complete(wlc, queue, 1);
4330 /* remove PLCP & Broadcom tx descriptor header */
4331 skb_pull(p, D11_PHY_HDR_LEN);
4332 skb_pull(p, D11_TXH_LEN);
4333 ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
4335 wiphy_err(wlc->wiphy, "%s: Not last frame => not calling "
4336 "tx_status\n", __func__);
4343 bcm_pkt_buf_free_skb(p);
4350 wlc_txfifo_complete(struct wlc_info *wlc, uint fifo, s8 txpktpend)
4352 TXPKTPENDDEC(wlc, fifo, txpktpend);
4353 BCMMSG(wlc->wiphy, "pktpend dec %d to %d\n", txpktpend,
4354 TXPKTPENDGET(wlc, fifo));
4356 /* There is more room; mark precedences related to this FIFO sendable */
4357 WLC_TX_FIFO_ENAB(wlc, fifo);
4359 /* Clear MHF2_TXBCMC_NOW flag if BCMC fifo has drained */
4360 if (AP_ENAB(wlc->pub) &&
4361 !TXPKTPENDGET(wlc, TX_BCMC_FIFO)) {
4362 wlc_mhf(wlc, MHF2, MHF2_TXBCMC_NOW, 0, WLC_BAND_AUTO);
4365 /* figure out which bsscfg is being worked on... */
4368 /* Update beacon listen interval in shared memory */
4369 void wlc_bcn_li_upd(struct wlc_info *wlc)
4371 if (AP_ENAB(wlc->pub))
4374 /* wake up every DTIM is the default */
4375 if (wlc->bcn_li_dtim == 1)
4376 wlc_write_shm(wlc, M_BCN_LI, 0);
4378 wlc_write_shm(wlc, M_BCN_LI,
4379 (wlc->bcn_li_dtim << 8) | wlc->bcn_li_bcn);
4383 * recover 64bit TSF value from the 16bit TSF value in the rx header
4384 * given the assumption that the TSF passed in header is within 65ms
4385 * of the current tsf.
4388 * 3.......6.......8.......0.......2.......4.......6.......8......0
4389 * |<---------- tsf_h ----------->||<--- tsf_l -->||<-RxTSFTime ->|
4391 * The RxTSFTime are the lowest 16 bits and provided by the ucode. The
4392 * tsf_l is filled in by wlc_bmac_recv, which is done earlier in the
4393 * receive call sequence after rx interrupt. Only the higher 16 bits
4394 * are used. Finally, the tsf_h is read from the tsf register.
4396 static u64 wlc_recover_tsf64(struct wlc_info *wlc, struct wlc_d11rxhdr *rxh)
4399 u16 rx_tsf_0_15, rx_tsf_16_31;
4401 wlc_bmac_read_tsf(wlc->hw, &tsf_l, &tsf_h);
4403 rx_tsf_16_31 = (u16)(tsf_l >> 16);
4404 rx_tsf_0_15 = rxh->rxhdr.RxTSFTime;
4407 * a greater tsf time indicates the low 16 bits of
4408 * tsf_l wrapped, so decrement the high 16 bits.
4410 if ((u16)tsf_l < rx_tsf_0_15) {
4412 if (rx_tsf_16_31 == 0xffff)
4416 return ((u64)tsf_h << 32) | (((u32)rx_tsf_16_31 << 16) + rx_tsf_0_15);
4420 prep_mac80211_status(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p,
4421 struct ieee80211_rx_status *rx_status)
4423 wlc_d11rxhdr_t *wlc_rxh = (wlc_d11rxhdr_t *) rxh;
4427 unsigned char *plcp;
4429 /* fill in TSF and flag its presence */
4430 rx_status->mactime = wlc_recover_tsf64(wlc, wlc_rxh);
4431 rx_status->flag |= RX_FLAG_MACTIME_MPDU;
4433 channel = WLC_CHAN_CHANNEL(rxh->RxChan);
4436 rx_status->band = IEEE80211_BAND_5GHZ;
4437 rx_status->freq = ieee80211_ofdm_chan_to_freq(
4438 WF_CHAN_FACTOR_5_G/2, channel);
4441 rx_status->band = IEEE80211_BAND_2GHZ;
4442 rx_status->freq = ieee80211_dsss_chan_to_freq(channel);
4445 rx_status->signal = wlc_rxh->rssi; /* signal */
4449 rx_status->antenna = (rxh->PhyRxStatus_0 & PRXS0_RXANT_UPSUBBAND) ? 1 : 0; /* ant */
4453 rspec = wlc_compute_rspec(rxh, plcp);
4454 if (IS_MCS(rspec)) {
4455 rx_status->rate_idx = rspec & RSPEC_RATE_MASK;
4456 rx_status->flag |= RX_FLAG_HT;
4457 if (RSPEC_IS40MHZ(rspec))
4458 rx_status->flag |= RX_FLAG_40MHZ;
4460 switch (RSPEC2RATE(rspec)) {
4462 rx_status->rate_idx = 0;
4465 rx_status->rate_idx = 1;
4468 rx_status->rate_idx = 2;
4471 rx_status->rate_idx = 3;
4474 rx_status->rate_idx = 4;
4477 rx_status->rate_idx = 5;
4480 rx_status->rate_idx = 6;
4483 rx_status->rate_idx = 7;
4486 rx_status->rate_idx = 8;
4489 rx_status->rate_idx = 9;
4492 rx_status->rate_idx = 10;
4495 rx_status->rate_idx = 11;
4498 wiphy_err(wlc->wiphy, "%s: Unknown rate\n", __func__);
4501 /* Determine short preamble and rate_idx */
4503 if (IS_CCK(rspec)) {
4504 if (rxh->PhyRxStatus_0 & PRXS0_SHORTH)
4505 rx_status->flag |= RX_FLAG_SHORTPRE;
4506 } else if (IS_OFDM(rspec)) {
4507 rx_status->flag |= RX_FLAG_SHORTPRE;
4509 wiphy_err(wlc->wiphy, "%s: Unknown modulation\n",
4514 if (PLCP3_ISSGI(plcp[3]))
4515 rx_status->flag |= RX_FLAG_SHORT_GI;
4517 if (rxh->RxStatus1 & RXS_DECERR) {
4518 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
4519 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_PLCP_CRC\n",
4522 if (rxh->RxStatus1 & RXS_FCSERR) {
4523 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
4524 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_FCS_CRC\n",
4530 wlc_recvctl(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p)
4533 struct ieee80211_rx_status rx_status;
4535 memset(&rx_status, 0, sizeof(rx_status));
4536 prep_mac80211_status(wlc, rxh, p, &rx_status);
4538 /* mac header+body length, exclude CRC and plcp header */
4539 len_mpdu = p->len - D11_PHY_HDR_LEN - FCS_LEN;
4540 skb_pull(p, D11_PHY_HDR_LEN);
4541 __skb_trim(p, len_mpdu);
4543 memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
4544 ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p);
4548 /* Process received frames */
4550 * Return true if more frames need to be processed. false otherwise.
4551 * Param 'bound' indicates max. # frames to process before break out.
4554 void wlc_recv(struct wlc_info *wlc, struct sk_buff *p)
4557 struct ieee80211_hdr *h;
4561 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
4563 /* frame starts with rxhdr */
4564 rxh = (d11rxhdr_t *) (p->data);
4566 /* strip off rxhdr */
4567 skb_pull(p, WL_HWRXOFF);
4569 /* fixup rx header endianness */
4570 rxh->RxFrameSize = le16_to_cpu(rxh->RxFrameSize);
4571 rxh->PhyRxStatus_0 = le16_to_cpu(rxh->PhyRxStatus_0);
4572 rxh->PhyRxStatus_1 = le16_to_cpu(rxh->PhyRxStatus_1);
4573 rxh->PhyRxStatus_2 = le16_to_cpu(rxh->PhyRxStatus_2);
4574 rxh->PhyRxStatus_3 = le16_to_cpu(rxh->PhyRxStatus_3);
4575 rxh->PhyRxStatus_4 = le16_to_cpu(rxh->PhyRxStatus_4);
4576 rxh->PhyRxStatus_5 = le16_to_cpu(rxh->PhyRxStatus_5);
4577 rxh->RxStatus1 = le16_to_cpu(rxh->RxStatus1);
4578 rxh->RxStatus2 = le16_to_cpu(rxh->RxStatus2);
4579 rxh->RxTSFTime = le16_to_cpu(rxh->RxTSFTime);
4580 rxh->RxChan = le16_to_cpu(rxh->RxChan);
4582 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU subframes */
4583 if (rxh->RxStatus1 & RXS_PBPRES) {
4585 wiphy_err(wlc->wiphy, "wl%d: wlc_recv: rcvd runt of "
4586 "len %d\n", wlc->pub->unit, p->len);
4592 h = (struct ieee80211_hdr *)(p->data + D11_PHY_HDR_LEN);
4595 if (rxh->RxStatus1 & RXS_FCSERR) {
4596 if (wlc->pub->mac80211_state & MAC80211_PROMISC_BCNS) {
4597 wiphy_err(wlc->wiphy, "FCSERR while scanning******* -"
4601 wiphy_err(wlc->wiphy, "RCSERR!!!\n");
4606 /* check received pkt has at least frame control field */
4607 if (len < D11_PHY_HDR_LEN + sizeof(h->frame_control)) {
4611 is_amsdu = rxh->RxStatus2 & RXS_AMSDU_MASK;
4613 /* explicitly test bad src address to avoid sending bad deauth */
4615 /* CTS and ACK CTL frames are w/o a2 */
4617 if (ieee80211_is_data(h->frame_control) ||
4618 ieee80211_is_mgmt(h->frame_control)) {
4619 if ((is_zero_ether_addr(h->addr2) ||
4620 is_multicast_ether_addr(h->addr2))) {
4621 wiphy_err(wlc->wiphy, "wl%d: %s: dropping a "
4622 "frame with invalid src mac address,"
4624 wlc->pub->unit, __func__, h->addr2);
4630 /* due to sheer numbers, toss out probe reqs for now */
4631 if (ieee80211_is_probe_req(h->frame_control))
4637 wlc_recvctl(wlc, rxh, p);
4641 bcm_pkt_buf_free_skb(p);
4644 /* calculate frame duration for Mixed-mode L-SIG spoofing, return
4645 * number of bytes goes in the length field
4647 * Formula given by HT PHY Spec v 1.13
4648 * len = 3(nsyms + nstream + 3) - 3
4651 wlc_calc_lsig_len(struct wlc_info *wlc, ratespec_t ratespec, uint mac_len)
4653 uint nsyms, len = 0, kNdps;
4655 BCMMSG(wlc->wiphy, "wl%d: rate %d, len%d\n",
4656 wlc->pub->unit, RSPEC2RATE(ratespec), mac_len);
4658 if (IS_MCS(ratespec)) {
4659 uint mcs = ratespec & RSPEC_RATE_MASK;
4660 /* MCS_TXS(mcs) returns num tx streams - 1 */
4661 int tot_streams = (MCS_TXS(mcs) + 1) + RSPEC_STC(ratespec);
4663 /* the payload duration calculation matches that of regular ofdm */
4664 /* 1000Ndbps = kbps * 4 */
4666 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4667 RSPEC_ISSGI(ratespec)) * 4;
4669 if (RSPEC_STC(ratespec) == 0)
4670 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4672 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4673 APHY_TAIL_NBITS) * 1000, kNdps);
4675 /* STBC needs to have even number of symbols */
4678 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4679 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
4681 nsyms += (tot_streams + 3); /* (+3) account for HT-SIG(2) and HT-STF(1) */
4682 /* 3 bytes/symbol @ legacy 6Mbps rate */
4683 len = (3 * nsyms) - 3; /* (-3) excluding service bits and tail bits */
4689 /* calculate frame duration of a given rate and length, return time in usec unit */
4691 wlc_calc_frame_time(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
4694 uint nsyms, dur = 0, Ndps, kNdps;
4695 uint rate = RSPEC2RATE(ratespec);
4698 wiphy_err(wlc->wiphy, "wl%d: WAR: using rate of 1 mbps\n",
4703 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, len%d\n",
4704 wlc->pub->unit, ratespec, preamble_type, mac_len);
4706 if (IS_MCS(ratespec)) {
4707 uint mcs = ratespec & RSPEC_RATE_MASK;
4708 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
4710 dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
4711 if (preamble_type == WLC_MM_PREAMBLE)
4713 /* 1000Ndbps = kbps * 4 */
4715 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4716 RSPEC_ISSGI(ratespec)) * 4;
4718 if (RSPEC_STC(ratespec) == 0)
4719 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4721 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4722 APHY_TAIL_NBITS) * 1000, kNdps);
4724 /* STBC needs to have even number of symbols */
4727 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4728 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
4730 dur += APHY_SYMBOL_TIME * nsyms;
4731 if (BAND_2G(wlc->band->bandtype))
4732 dur += DOT11_OFDM_SIGNAL_EXTENSION;
4733 } else if (IS_OFDM(rate)) {
4734 dur = APHY_PREAMBLE_TIME;
4735 dur += APHY_SIGNAL_TIME;
4736 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
4738 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4740 CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS),
4742 dur += APHY_SYMBOL_TIME * nsyms;
4743 if (BAND_2G(wlc->band->bandtype))
4744 dur += DOT11_OFDM_SIGNAL_EXTENSION;
4746 /* calc # bits * 2 so factor of 2 in rate (1/2 mbps) will divide out */
4747 mac_len = mac_len * 8 * 2;
4748 /* calc ceiling of bits/rate = microseconds of air time */
4749 dur = (mac_len + rate - 1) / rate;
4750 if (preamble_type & WLC_SHORT_PREAMBLE)
4751 dur += BPHY_PLCP_SHORT_TIME;
4753 dur += BPHY_PLCP_TIME;
4758 /* The opposite of wlc_calc_frame_time */
4760 wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
4763 uint nsyms, mac_len, Ndps, kNdps;
4764 uint rate = RSPEC2RATE(ratespec);
4766 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, dur %d\n",
4767 wlc->pub->unit, ratespec, preamble_type, dur);
4769 if (IS_MCS(ratespec)) {
4770 uint mcs = ratespec & RSPEC_RATE_MASK;
4771 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
4772 dur -= PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
4773 /* payload calculation matches that of regular ofdm */
4774 if (BAND_2G(wlc->band->bandtype))
4775 dur -= DOT11_OFDM_SIGNAL_EXTENSION;
4776 /* kNdbps = kbps * 4 */
4778 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4779 RSPEC_ISSGI(ratespec)) * 4;
4780 nsyms = dur / APHY_SYMBOL_TIME;
4783 ((APHY_SERVICE_NBITS + APHY_TAIL_NBITS) * 1000)) / 8000;
4784 } else if (IS_OFDM(ratespec)) {
4785 dur -= APHY_PREAMBLE_TIME;
4786 dur -= APHY_SIGNAL_TIME;
4787 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
4789 nsyms = dur / APHY_SYMBOL_TIME;
4792 (APHY_SERVICE_NBITS + APHY_TAIL_NBITS)) / 8;
4794 if (preamble_type & WLC_SHORT_PREAMBLE)
4795 dur -= BPHY_PLCP_SHORT_TIME;
4797 dur -= BPHY_PLCP_TIME;
4798 mac_len = dur * rate;
4799 /* divide out factor of 2 in rate (1/2 mbps) */
4800 mac_len = mac_len / 8 / 2;
4806 wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4808 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, "
4809 "preamble_type %d\n", wlc->pub->unit, rspec, preamble_type);
4810 /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
4811 * or equal to the rate of the immediately previous frame in the FES
4813 rspec = WLC_BASIC_RATE(wlc, rspec);
4814 /* BA len == 32 == 16(ctl hdr) + 4(ba len) + 8(bitmap) + 4(fcs) */
4815 return wlc_calc_frame_time(wlc, rspec, preamble_type,
4816 (DOT11_BA_LEN + DOT11_BA_BITMAP_LEN +
4821 wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4825 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d\n",
4826 wlc->pub->unit, rspec, preamble_type);
4827 /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
4828 * or equal to the rate of the immediately previous frame in the FES
4830 rspec = WLC_BASIC_RATE(wlc, rspec);
4831 /* ACK frame len == 14 == 2(fc) + 2(dur) + 6(ra) + 4(fcs) */
4833 wlc_calc_frame_time(wlc, rspec, preamble_type,
4834 (DOT11_ACK_LEN + FCS_LEN));
4839 wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4841 BCMMSG(wlc->wiphy, "wl%d: ratespec 0x%x, preamble_type %d\n",
4842 wlc->pub->unit, rspec, preamble_type);
4843 return wlc_calc_ack_time(wlc, rspec, preamble_type);
4846 /* derive wlc->band->basic_rate[] table from 'rateset' */
4847 void wlc_rate_lookup_init(struct wlc_info *wlc, wlc_rateset_t *rateset)
4853 u8 *br = wlc->band->basic_rate;
4856 /* incoming rates are in 500kbps units as in 802.11 Supported Rates */
4857 memset(br, 0, WLC_MAXRATE + 1);
4859 /* For each basic rate in the rates list, make an entry in the
4860 * best basic lookup.
4862 for (i = 0; i < rateset->count; i++) {
4863 /* only make an entry for a basic rate */
4864 if (!(rateset->rates[i] & WLC_RATE_FLAG))
4867 /* mask off basic bit */
4868 rate = (rateset->rates[i] & WLC_RATE_MASK);
4870 if (rate > WLC_MAXRATE) {
4871 wiphy_err(wlc->wiphy, "wlc_rate_lookup_init: invalid "
4872 "rate 0x%X in rate set\n",
4880 /* The rate lookup table now has non-zero entries for each
4881 * basic rate, equal to the basic rate: br[basicN] = basicN
4883 * To look up the best basic rate corresponding to any
4884 * particular rate, code can use the basic_rate table
4887 * basic_rate = wlc->band->basic_rate[tx_rate]
4889 * Make sure there is a best basic rate entry for
4890 * every rate by walking up the table from low rates
4891 * to high, filling in holes in the lookup table
4894 for (i = 0; i < wlc->band->hw_rateset.count; i++) {
4895 rate = wlc->band->hw_rateset.rates[i];
4897 if (br[rate] != 0) {
4898 /* This rate is a basic rate.
4899 * Keep track of the best basic rate so far by
4910 /* This rate is not a basic rate so figure out the
4911 * best basic rate less than this rate and fill in
4912 * the hole in the table
4915 br[rate] = IS_OFDM(rate) ? ofdm_basic : cck_basic;
4920 if (IS_OFDM(rate)) {
4921 /* In 11g and 11a, the OFDM mandatory rates are 6, 12, and 24 Mbps */
4922 if (rate >= WLC_RATE_24M)
4923 mandatory = WLC_RATE_24M;
4924 else if (rate >= WLC_RATE_12M)
4925 mandatory = WLC_RATE_12M;
4927 mandatory = WLC_RATE_6M;
4929 /* In 11b, all the CCK rates are mandatory 1 - 11 Mbps */
4933 br[rate] = mandatory;
4937 static void wlc_write_rate_shm(struct wlc_info *wlc, u8 rate, u8 basic_rate)
4940 u8 basic_phy_rate, basic_index;
4941 u16 dir_table, basic_table;
4944 /* Shared memory address for the table we are reading */
4945 dir_table = IS_OFDM(basic_rate) ? M_RT_DIRMAP_A : M_RT_DIRMAP_B;
4947 /* Shared memory address for the table we are writing */
4948 basic_table = IS_OFDM(rate) ? M_RT_BBRSMAP_A : M_RT_BBRSMAP_B;
4951 * for a given rate, the LS-nibble of the PLCP SIGNAL field is
4952 * the index into the rate table.
4954 phy_rate = rate_info[rate] & WLC_RATE_MASK;
4955 basic_phy_rate = rate_info[basic_rate] & WLC_RATE_MASK;
4956 index = phy_rate & 0xf;
4957 basic_index = basic_phy_rate & 0xf;
4959 /* Find the SHM pointer to the ACK rate entry by looking in the
4962 basic_ptr = wlc_read_shm(wlc, (dir_table + basic_index * 2));
4964 /* Update the SHM BSS-basic-rate-set mapping table with the pointer
4965 * to the correct basic rate for the given incoming rate
4967 wlc_write_shm(wlc, (basic_table + index * 2), basic_ptr);
4970 static const wlc_rateset_t *wlc_rateset_get_hwrs(struct wlc_info *wlc)
4972 const wlc_rateset_t *rs_dflt;
4974 if (WLC_PHY_11N_CAP(wlc->band)) {
4975 if (BAND_5G(wlc->band->bandtype))
4976 rs_dflt = &ofdm_mimo_rates;
4978 rs_dflt = &cck_ofdm_mimo_rates;
4979 } else if (wlc->band->gmode)
4980 rs_dflt = &cck_ofdm_rates;
4982 rs_dflt = &cck_rates;
4987 void wlc_set_ratetable(struct wlc_info *wlc)
4989 const wlc_rateset_t *rs_dflt;
4991 u8 rate, basic_rate;
4994 rs_dflt = wlc_rateset_get_hwrs(wlc);
4996 wlc_rateset_copy(rs_dflt, &rs);
4997 wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
4999 /* walk the phy rate table and update SHM basic rate lookup table */
5000 for (i = 0; i < rs.count; i++) {
5001 rate = rs.rates[i] & WLC_RATE_MASK;
5003 /* for a given rate WLC_BASIC_RATE returns the rate at
5004 * which a response ACK/CTS should be sent.
5006 basic_rate = WLC_BASIC_RATE(wlc, rate);
5007 if (basic_rate == 0) {
5008 /* This should only happen if we are using a
5009 * restricted rateset.
5011 basic_rate = rs.rates[0] & WLC_RATE_MASK;
5014 wlc_write_rate_shm(wlc, rate, basic_rate);
5019 * Return true if the specified rate is supported by the specified band.
5020 * WLC_BAND_AUTO indicates the current band.
5022 bool wlc_valid_rate(struct wlc_info *wlc, ratespec_t rspec, int band,
5025 wlc_rateset_t *hw_rateset;
5028 if ((band == WLC_BAND_AUTO) || (band == wlc->band->bandtype)) {
5029 hw_rateset = &wlc->band->hw_rateset;
5030 } else if (NBANDS(wlc) > 1) {
5031 hw_rateset = &wlc->bandstate[OTHERBANDUNIT(wlc)]->hw_rateset;
5033 /* other band specified and we are a single band device */
5037 /* check if this is a mimo rate */
5038 if (IS_MCS(rspec)) {
5039 if (!VALID_MCS((rspec & RSPEC_RATE_MASK)))
5042 return isset(hw_rateset->mcs, (rspec & RSPEC_RATE_MASK));
5045 for (i = 0; i < hw_rateset->count; i++)
5046 if (hw_rateset->rates[i] == RSPEC2RATE(rspec))
5050 wiphy_err(wlc->wiphy, "wl%d: wlc_valid_rate: rate spec 0x%x "
5051 "not in hw_rateset\n", wlc->pub->unit, rspec);
5057 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap)
5060 struct wlcband *band;
5062 for (i = 0; i < NBANDS(wlc); i++) {
5063 if (IS_SINGLEBAND_5G(wlc->deviceid))
5065 band = wlc->bandstate[i];
5066 if (band->bandtype == WLC_BAND_5G) {
5067 if ((bwcap == WLC_N_BW_40ALL)
5068 || (bwcap == WLC_N_BW_20IN2G_40IN5G))
5069 band->mimo_cap_40 = true;
5071 band->mimo_cap_40 = false;
5073 if (bwcap == WLC_N_BW_40ALL)
5074 band->mimo_cap_40 = true;
5076 band->mimo_cap_40 = false;
5081 void wlc_mod_prb_rsp_rate_table(struct wlc_info *wlc, uint frame_len)
5083 const wlc_rateset_t *rs_dflt;
5087 u8 plcp[D11_PHY_HDR_LEN];
5091 sifs = SIFS(wlc->band);
5093 rs_dflt = wlc_rateset_get_hwrs(wlc);
5095 wlc_rateset_copy(rs_dflt, &rs);
5096 wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
5098 /* walk the phy rate table and update MAC core SHM basic rate table entries */
5099 for (i = 0; i < rs.count; i++) {
5100 rate = rs.rates[i] & WLC_RATE_MASK;
5102 entry_ptr = wlc_rate_shm_offset(wlc, rate);
5104 /* Calculate the Probe Response PLCP for the given rate */
5105 wlc_compute_plcp(wlc, rate, frame_len, plcp);
5107 /* Calculate the duration of the Probe Response frame plus SIFS for the MAC */
5109 (u16) wlc_calc_frame_time(wlc, rate, WLC_LONG_PREAMBLE,
5113 /* Update the SHM Rate Table entry Probe Response values */
5114 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS,
5115 (u16) (plcp[0] + (plcp[1] << 8)));
5116 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS + 2,
5117 (u16) (plcp[2] + (plcp[3] << 8)));
5118 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_DUR_POS, dur);
5122 /* Max buffering needed for beacon template/prb resp template is 142 bytes.
5124 * PLCP header is 6 bytes.
5125 * 802.11 A3 header is 24 bytes.
5126 * Max beacon frame body template length is 112 bytes.
5127 * Max probe resp frame body template length is 110 bytes.
5129 * *len on input contains the max length of the packet available.
5131 * The *len value is set to the number of bytes in buf used, and starts with the PLCP
5132 * and included up to, but not including, the 4 byte FCS.
5135 wlc_bcn_prb_template(struct wlc_info *wlc, u16 type, ratespec_t bcn_rspec,
5136 struct wlc_bsscfg *cfg, u16 *buf, int *len)
5138 static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};
5139 cck_phy_hdr_t *plcp;
5140 struct ieee80211_mgmt *h;
5141 int hdr_len, body_len;
5143 if (MBSS_BCN_ENAB(cfg) && type == IEEE80211_STYPE_BEACON)
5144 hdr_len = DOT11_MAC_HDR_LEN;
5146 hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
5147 body_len = *len - hdr_len; /* calc buffer size provided for frame body */
5149 *len = hdr_len + body_len; /* return actual size */
5151 /* format PHY and MAC headers */
5152 memset((char *)buf, 0, hdr_len);
5154 plcp = (cck_phy_hdr_t *) buf;
5156 /* PLCP for Probe Response frames are filled in from core's rate table */
5157 if (type == IEEE80211_STYPE_BEACON && !MBSS_BCN_ENAB(cfg)) {
5159 wlc_compute_plcp(wlc, bcn_rspec,
5160 (DOT11_MAC_HDR_LEN + body_len + FCS_LEN),
5164 /* "Regular" and 16 MBSS but not for 4 MBSS */
5165 /* Update the phytxctl for the beacon based on the rspec */
5166 if (!SOFTBCN_ENAB(cfg))
5167 wlc_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
5169 if (MBSS_BCN_ENAB(cfg) && type == IEEE80211_STYPE_BEACON)
5170 h = (struct ieee80211_mgmt *)&plcp[0];
5172 h = (struct ieee80211_mgmt *)&plcp[1];
5174 /* fill in 802.11 header */
5175 h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type);
5177 /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
5178 /* A1 filled in by MAC for prb resp, broadcast for bcn */
5179 if (type == IEEE80211_STYPE_BEACON)
5180 memcpy(&h->da, ðer_bcast, ETH_ALEN);
5181 memcpy(&h->sa, &cfg->cur_etheraddr, ETH_ALEN);
5182 memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN);
5184 /* SEQ filled in by MAC */
5189 int wlc_get_header_len()
5194 /* Update a beacon for a particular BSS
5195 * For MBSS, this updates the software template and sets "latest" to the index of the
5197 * Otherwise, it updates the hardware template.
5199 void wlc_bss_update_beacon(struct wlc_info *wlc, struct wlc_bsscfg *cfg)
5201 int len = BCN_TMPL_LEN;
5203 /* Clear the soft intmask */
5204 wlc->defmacintmask &= ~MI_BCNTPL;
5206 if (!cfg->up) { /* Only allow updates on an UP bss */
5210 /* Optimize: Some of if/else could be combined */
5211 if (!MBSS_BCN_ENAB(cfg) && HWBCN_ENAB(cfg)) {
5212 /* Hardware beaconing for this config */
5213 u16 bcn[BCN_TMPL_LEN / 2];
5214 u32 both_valid = MCMD_BCN0VLD | MCMD_BCN1VLD;
5215 d11regs_t *regs = wlc->regs;
5217 /* Check if both templates are in use, if so sched. an interrupt
5218 * that will call back into this routine
5220 if ((R_REG(®s->maccommand) & both_valid) == both_valid) {
5221 /* clear any previous status */
5222 W_REG(®s->macintstatus, MI_BCNTPL);
5224 /* Check that after scheduling the interrupt both of the
5225 * templates are still busy. if not clear the int. & remask
5227 if ((R_REG(®s->maccommand) & both_valid) == both_valid) {
5228 wlc->defmacintmask |= MI_BCNTPL;
5233 wlc_lowest_basic_rspec(wlc, &cfg->current_bss->rateset);
5234 /* update the template and ucode shm */
5235 wlc_bcn_prb_template(wlc, IEEE80211_STYPE_BEACON,
5236 wlc->bcn_rspec, cfg, bcn, &len);
5237 wlc_write_hw_bcntemplates(wlc, bcn, len, false);
5242 * Update all beacons for the system.
5244 void wlc_update_beacon(struct wlc_info *wlc)
5247 struct wlc_bsscfg *bsscfg;
5249 /* update AP or IBSS beacons */
5250 FOREACH_BSS(wlc, idx, bsscfg) {
5251 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
5252 wlc_bss_update_beacon(wlc, bsscfg);
5256 /* Write ssid into shared memory */
5257 void wlc_shm_ssid_upd(struct wlc_info *wlc, struct wlc_bsscfg *cfg)
5259 u8 *ssidptr = cfg->SSID;
5261 u8 ssidbuf[IEEE80211_MAX_SSID_LEN];
5263 /* padding the ssid with zero and copy it into shm */
5264 memset(ssidbuf, 0, IEEE80211_MAX_SSID_LEN);
5265 memcpy(ssidbuf, ssidptr, cfg->SSID_len);
5267 wlc_copyto_shm(wlc, base, ssidbuf, IEEE80211_MAX_SSID_LEN);
5269 if (!MBSS_BCN_ENAB(cfg))
5270 wlc_write_shm(wlc, M_SSIDLEN, (u16) cfg->SSID_len);
5273 void wlc_update_probe_resp(struct wlc_info *wlc, bool suspend)
5276 struct wlc_bsscfg *bsscfg;
5278 /* update AP or IBSS probe responses */
5279 FOREACH_BSS(wlc, idx, bsscfg) {
5280 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
5281 wlc_bss_update_probe_resp(wlc, bsscfg, suspend);
5286 wlc_bss_update_probe_resp(struct wlc_info *wlc, struct wlc_bsscfg *cfg,
5289 u16 prb_resp[BCN_TMPL_LEN / 2];
5290 int len = BCN_TMPL_LEN;
5292 /* write the probe response to hardware, or save in the config structure */
5293 if (!MBSS_PRB_ENAB(cfg)) {
5295 /* create the probe response template */
5296 wlc_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0, cfg,
5300 wlc_suspend_mac_and_wait(wlc);
5302 /* write the probe response into the template region */
5303 wlc_bmac_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
5304 (len + 3) & ~3, prb_resp);
5306 /* write the length of the probe response frame (+PLCP/-FCS) */
5307 wlc_write_shm(wlc, M_PRB_RESP_FRM_LEN, (u16) len);
5309 /* write the SSID and SSID length */
5310 wlc_shm_ssid_upd(wlc, cfg);
5313 * Write PLCP headers and durations for probe response frames at all rates.
5314 * Use the actual frame length covered by the PLCP header for the call to
5315 * wlc_mod_prb_rsp_rate_table() by subtracting the PLCP len and adding the FCS.
5317 len += (-D11_PHY_HDR_LEN + FCS_LEN);
5318 wlc_mod_prb_rsp_rate_table(wlc, (u16) len);
5321 wlc_enable_mac(wlc);
5322 } else { /* Generating probe resp in sw; update local template */
5323 /* error: No software probe response support without MBSS */
5327 /* prepares pdu for transmission. returns BCM error codes */
5328 int wlc_prep_pdu(struct wlc_info *wlc, struct sk_buff *pdu, uint *fifop)
5332 struct ieee80211_hdr *h;
5335 txh = (d11txh_t *) (pdu->data);
5336 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
5338 /* get the pkt queue info. This was put at wlc_sendctl or wlc_send for PDU */
5339 fifo = le16_to_cpu(txh->TxFrameID) & TXFID_QUEUE_MASK;
5345 /* return if insufficient dma resources */
5346 if (TXAVAIL(wlc, fifo) < MAX_DMA_SEGS) {
5347 /* Mark precedences related to this FIFO, unsendable */
5348 WLC_TX_FIFO_CLEAR(wlc, fifo);
5354 /* init tx reported rate mechanism */
5355 void wlc_reprate_init(struct wlc_info *wlc)
5358 struct wlc_bsscfg *bsscfg;
5360 FOREACH_BSS(wlc, i, bsscfg) {
5361 wlc_bsscfg_reprate_init(bsscfg);
5365 /* per bsscfg init tx reported rate mechanism */
5366 void wlc_bsscfg_reprate_init(struct wlc_bsscfg *bsscfg)
5368 bsscfg->txrspecidx = 0;
5369 memset((char *)bsscfg->txrspec, 0, sizeof(bsscfg->txrspec));
5372 void wlc_default_rateset(struct wlc_info *wlc, wlc_rateset_t *rs)
5374 wlc_rateset_default(rs, NULL, wlc->band->phytype, wlc->band->bandtype,
5375 false, WLC_RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
5376 CHSPEC_WLC_BW(wlc->default_bss->chanspec),
5377 wlc->stf->txstreams);
5380 static void wlc_bss_default_init(struct wlc_info *wlc)
5382 chanspec_t chanspec;
5383 struct wlcband *band;
5384 wlc_bss_info_t *bi = wlc->default_bss;
5386 /* init default and target BSS with some sane initial values */
5387 memset((char *)(bi), 0, sizeof(wlc_bss_info_t));
5388 bi->beacon_period = ISSIM_ENAB(wlc->pub->sih) ? BEACON_INTERVAL_DEF_QT :
5389 BEACON_INTERVAL_DEFAULT;
5390 bi->dtim_period = ISSIM_ENAB(wlc->pub->sih) ? DTIM_INTERVAL_DEF_QT :
5391 DTIM_INTERVAL_DEFAULT;
5393 /* fill the default channel as the first valid channel
5394 * starting from the 2G channels
5396 chanspec = CH20MHZ_CHSPEC(1);
5397 wlc->home_chanspec = bi->chanspec = chanspec;
5399 /* find the band of our default channel */
5401 if (NBANDS(wlc) > 1 && band->bandunit != CHSPEC_WLCBANDUNIT(chanspec))
5402 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
5404 /* init bss rates to the band specific default rate set */
5405 wlc_rateset_default(&bi->rateset, NULL, band->phytype, band->bandtype,
5406 false, WLC_RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
5407 CHSPEC_WLC_BW(chanspec), wlc->stf->txstreams);
5409 if (N_ENAB(wlc->pub))
5410 bi->flags |= WLC_BSS_HT;
5414 mac80211_wlc_set_nrate(struct wlc_info *wlc, struct wlcband *cur_band,
5417 u8 stf = (int_val & NRATE_STF_MASK) >> NRATE_STF_SHIFT;
5418 u8 rate = int_val & NRATE_RATE_MASK;
5420 bool ismcs = ((int_val & NRATE_MCS_INUSE) == NRATE_MCS_INUSE);
5421 bool issgi = ((int_val & NRATE_SGI_MASK) >> NRATE_SGI_SHIFT);
5422 bool override_mcs_only = ((int_val & NRATE_OVERRIDE_MCS_ONLY)
5423 == NRATE_OVERRIDE_MCS_ONLY);
5427 return (ratespec_t) rate;
5430 /* validate the combination of rate/mcs/stf is allowed */
5431 if (N_ENAB(wlc->pub) && ismcs) {
5432 /* mcs only allowed when nmode */
5433 if (stf > PHY_TXC1_MODE_SDM) {
5434 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid stf\n",
5435 WLCWLUNIT(wlc), __func__);
5440 /* mcs 32 is a special case, DUP mode 40 only */
5442 if (!CHSPEC_IS40(wlc->home_chanspec) ||
5443 ((stf != PHY_TXC1_MODE_SISO)
5444 && (stf != PHY_TXC1_MODE_CDD))) {
5445 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid mcs "
5446 "32\n", WLCWLUNIT(wlc), __func__);
5450 /* mcs > 7 must use stf SDM */
5451 } else if (rate > HIGHEST_SINGLE_STREAM_MCS) {
5452 /* mcs > 7 must use stf SDM */
5453 if (stf != PHY_TXC1_MODE_SDM) {
5454 BCMMSG(wlc->wiphy, "wl%d: enabling "
5455 "SDM mode for mcs %d\n",
5456 WLCWLUNIT(wlc), rate);
5457 stf = PHY_TXC1_MODE_SDM;
5460 /* MCS 0-7 may use SISO, CDD, and for phy_rev >= 3 STBC */
5461 if ((stf > PHY_TXC1_MODE_STBC) ||
5462 (!WLC_STBC_CAP_PHY(wlc)
5463 && (stf == PHY_TXC1_MODE_STBC))) {
5464 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid STBC"
5465 "\n", WLCWLUNIT(wlc), __func__);
5470 } else if (IS_OFDM(rate)) {
5471 if ((stf != PHY_TXC1_MODE_CDD) && (stf != PHY_TXC1_MODE_SISO)) {
5472 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid OFDM\n",
5473 WLCWLUNIT(wlc), __func__);
5477 } else if (IS_CCK(rate)) {
5478 if ((cur_band->bandtype != WLC_BAND_2G)
5479 || (stf != PHY_TXC1_MODE_SISO)) {
5480 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid CCK\n",
5481 WLCWLUNIT(wlc), __func__);
5486 wiphy_err(wlc->wiphy, "wl%d: %s: Unknown rate type\n",
5487 WLCWLUNIT(wlc), __func__);
5491 /* make sure multiple antennae are available for non-siso rates */
5492 if ((stf != PHY_TXC1_MODE_SISO) && (wlc->stf->txstreams == 1)) {
5493 wiphy_err(wlc->wiphy, "wl%d: %s: SISO antenna but !SISO "
5494 "request\n", WLCWLUNIT(wlc), __func__);
5501 rspec |= RSPEC_MIMORATE;
5502 /* For STBC populate the STC field of the ratespec */
5503 if (stf == PHY_TXC1_MODE_STBC) {
5505 stc = 1; /* Nss for single stream is always 1 */
5506 rspec |= (stc << RSPEC_STC_SHIFT);
5510 rspec |= (stf << RSPEC_STF_SHIFT);
5512 if (override_mcs_only)
5513 rspec |= RSPEC_OVERRIDE_MCS_ONLY;
5516 rspec |= RSPEC_SHORT_GI;
5519 && !wlc_valid_rate(wlc, rspec, cur_band->bandtype, true)) {
5528 /* formula: IDLE_BUSY_RATIO_X_16 = (100-duty_cycle)/duty_cycle*16 */
5530 wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
5533 int idle_busy_ratio_x_16 = 0;
5535 isOFDM ? M_TX_IDLE_BUSY_RATIO_X_16_OFDM :
5536 M_TX_IDLE_BUSY_RATIO_X_16_CCK;
5537 if (duty_cycle > 100 || duty_cycle < 0) {
5538 wiphy_err(wlc->wiphy, "wl%d: duty cycle value off limit\n",
5543 idle_busy_ratio_x_16 = (100 - duty_cycle) * 16 / duty_cycle;
5544 /* Only write to shared memory when wl is up */
5546 wlc_write_shm(wlc, offset, (u16) idle_busy_ratio_x_16);
5549 wlc->tx_duty_cycle_ofdm = (u16) duty_cycle;
5551 wlc->tx_duty_cycle_cck = (u16) duty_cycle;
5556 /* Read a single u16 from shared memory.
5557 * SHM 'offset' needs to be an even address
5559 u16 wlc_read_shm(struct wlc_info *wlc, uint offset)
5561 return wlc_bmac_read_shm(wlc->hw, offset);
5564 /* Write a single u16 to shared memory.
5565 * SHM 'offset' needs to be an even address
5567 void wlc_write_shm(struct wlc_info *wlc, uint offset, u16 v)
5569 wlc_bmac_write_shm(wlc->hw, offset, v);
5572 /* Copy a buffer to shared memory.
5573 * SHM 'offset' needs to be an even address and
5574 * Buffer length 'len' must be an even number of bytes
5576 void wlc_copyto_shm(struct wlc_info *wlc, uint offset, const void *buf, int len)
5578 /* offset and len need to be even */
5579 if (len <= 0 || (offset & 1) || (len & 1))
5582 wlc_bmac_copyto_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL);
5586 /* wrapper BMAC functions to for HIGH driver access */
5587 void wlc_mctrl(struct wlc_info *wlc, u32 mask, u32 val)
5589 wlc_bmac_mctrl(wlc->hw, mask, val);
5592 void wlc_mhf(struct wlc_info *wlc, u8 idx, u16 mask, u16 val, int bands)
5594 wlc_bmac_mhf(wlc->hw, idx, mask, val, bands);
5597 int wlc_xmtfifo_sz_get(struct wlc_info *wlc, uint fifo, uint *blocks)
5599 return wlc_bmac_xmtfifo_sz_get(wlc->hw, fifo, blocks);
5602 void wlc_write_template_ram(struct wlc_info *wlc, int offset, int len,
5605 wlc_bmac_write_template_ram(wlc->hw, offset, len, buf);
5608 void wlc_write_hw_bcntemplates(struct wlc_info *wlc, void *bcn, int len,
5611 wlc_bmac_write_hw_bcntemplates(wlc->hw, bcn, len, both);
5615 wlc_set_addrmatch(struct wlc_info *wlc, int match_reg_offset,
5618 wlc_bmac_set_addrmatch(wlc->hw, match_reg_offset, addr);
5619 if (match_reg_offset == RCM_BSSID_OFFSET)
5620 memcpy(wlc->cfg->BSSID, addr, ETH_ALEN);
5623 void wlc_pllreq(struct wlc_info *wlc, bool set, mbool req_bit)
5625 wlc_bmac_pllreq(wlc->hw, set, req_bit);
5628 void wlc_reset_bmac_done(struct wlc_info *wlc)
5632 /* check for the particular priority flow control bit being set */
5634 wlc_txflowcontrol_prio_isset(struct wlc_info *wlc, struct wlc_txq_info *q,
5639 if (prio == ALLPRIO) {
5640 prio_mask = TXQ_STOP_FOR_PRIOFC_MASK;
5642 prio_mask = NBITVAL(prio);
5645 return (q->stopped & prio_mask) == prio_mask;
5648 /* propagate the flow control to all interfaces using the given tx queue */
5649 void wlc_txflowcontrol(struct wlc_info *wlc, struct wlc_txq_info *qi,
5655 BCMMSG(wlc->wiphy, "flow control kicks in\n");
5657 if (prio == ALLPRIO) {
5658 prio_bits = TXQ_STOP_FOR_PRIOFC_MASK;
5660 prio_bits = NBITVAL(prio);
5663 cur_bits = qi->stopped & prio_bits;
5665 /* Check for the case of no change and return early
5666 * Otherwise update the bit and continue
5669 if (cur_bits == prio_bits) {
5672 mboolset(qi->stopped, prio_bits);
5674 if (cur_bits == 0) {
5677 mboolclr(qi->stopped, prio_bits);
5680 /* If there is a flow control override we will not change the external
5681 * flow control state.
5683 if (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK) {
5687 wlc_txflowcontrol_signal(wlc, qi, on, prio);
5691 wlc_txflowcontrol_override(struct wlc_info *wlc, struct wlc_txq_info *qi,
5692 bool on, uint override)
5696 prev_override = (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK);
5698 /* Update the flow control bits and do an early return if there is
5699 * no change in the external flow control state.
5702 mboolset(qi->stopped, override);
5703 /* if there was a previous override bit on, then setting this
5704 * makes no difference.
5706 if (prev_override) {
5710 wlc_txflowcontrol_signal(wlc, qi, ON, ALLPRIO);
5712 mboolclr(qi->stopped, override);
5713 /* clearing an override bit will only make a difference for
5714 * flow control if it was the only bit set. For any other
5715 * override setting, just return
5717 if (prev_override != override) {
5721 if (qi->stopped == 0) {
5722 wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
5726 for (prio = MAXPRIO; prio >= 0; prio--) {
5727 if (!mboolisset(qi->stopped, NBITVAL(prio)))
5728 wlc_txflowcontrol_signal(wlc, qi, OFF,
5735 static void wlc_txflowcontrol_reset(struct wlc_info *wlc)
5737 struct wlc_txq_info *qi;
5739 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
5741 wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
5748 wlc_txflowcontrol_signal(struct wlc_info *wlc, struct wlc_txq_info *qi, bool on,
5751 #ifdef NON_FUNCTIONAL
5752 /* wlcif_list is never filled so this function is not functional */
5753 struct wlc_if *wlcif;
5755 for (wlcif = wlc->wlcif_list; wlcif != NULL; wlcif = wlcif->next) {
5756 if (wlcif->qi == qi && wlcif->flags & WLC_IF_LINKED)
5757 wl_txflowcontrol(wlc->wl, wlcif->wlif, on, prio);
5762 static struct wlc_txq_info *wlc_txq_alloc(struct wlc_info *wlc)
5764 struct wlc_txq_info *qi, *p;
5766 qi = kzalloc(sizeof(struct wlc_txq_info), GFP_ATOMIC);
5769 * Have enough room for control packets along with HI watermark
5770 * Also, add room to txq for total psq packets if all the SCBs
5771 * leave PS mode. The watermark for flowcontrol to OS packets
5772 * will remain the same
5774 bcm_pktq_init(&qi->q, WLC_PREC_COUNT,
5775 (2 * wlc->pub->tunables->datahiwat) + PKTQ_LEN_DEFAULT
5776 + wlc->pub->psq_pkts_total);
5778 /* add this queue to the the global list */
5781 wlc->tx_queues = qi;
5783 while (p->next != NULL)
5791 static void wlc_txq_free(struct wlc_info *wlc, struct wlc_txq_info *qi)
5793 struct wlc_txq_info *p;
5798 /* remove the queue from the linked list */
5801 wlc->tx_queues = p->next;
5803 while (p != NULL && p->next != qi)
5806 p->next = p->next->next;
5813 * Flag 'scan in progress' to withhold dynamic phy calibration
5815 void wlc_scan_start(struct wlc_info *wlc)
5817 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, true);
5820 void wlc_scan_stop(struct wlc_info *wlc)
5822 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, false);
5825 void wlc_associate_upd(struct wlc_info *wlc, bool state)
5827 wlc->pub->associated = state;
5828 wlc->cfg->associated = state;
5832 * When a remote STA/AP is removed by Mac80211, or when it can no longer accept
5833 * AMPDU traffic, packets pending in hardware have to be invalidated so that
5834 * when later on hardware releases them, they can be handled appropriately.
5836 void wlc_inval_dma_pkts(struct wlc_hw_info *hw,
5837 struct ieee80211_sta *sta,
5838 void (*dma_callback_fn))
5840 struct hnddma_pub *dmah;
5842 for (i = 0; i < NFIFO; i++) {
5845 dma_walk_packets(dmah, dma_callback_fn, sta);
5849 int wlc_get_curband(struct wlc_info *wlc)
5851 return wlc->band->bandunit;
5854 void wlc_wait_for_tx_completion(struct wlc_info *wlc, bool drop)
5856 /* flush packet queue when requested */
5858 bcm_pktq_flush(&wlc->pkt_queue->q, false, NULL, NULL);
5860 /* wait for queue and DMA fifos to run dry */
5861 while (!pktq_empty(&wlc->pkt_queue->q) ||
5862 TXPKTPENDTOT(wlc) > 0) {
5863 wl_msleep(wlc->wl, 1);
5867 int wlc_set_par(struct wlc_info *wlc, enum wlc_par_id par_id, int int_val)
5872 case IOV_BCN_LI_BCN:
5873 wlc->bcn_li_bcn = (u8) int_val;
5875 wlc_bcn_li_upd(wlc);
5877 /* As long as override is false, this only sets the *user*
5878 targets. User can twiddle this all he wants with no harm.
5879 wlc_phy_txpower_set() explicitly sets override to false if
5880 not internal or test.
5886 /* Remove override bit and clip to max qdbm value */
5887 qdbm = (u8)min_t(u32, (int_val & ~WL_TXPWR_OVERRIDE), 0xff);
5888 /* Extract override setting */
5889 override = (int_val & WL_TXPWR_OVERRIDE) ? true : false;
5891 wlc_phy_txpower_set(wlc->band->pi, qdbm, override);
5895 wlc->mpc = (bool)int_val;
5896 wlc_radio_mpc_upd(wlc);
5904 int wlc_get_par(struct wlc_info *wlc, enum wlc_par_id par_id, int *ret_int_ptr)
5909 case IOV_BCN_LI_BCN:
5910 *ret_int_ptr = wlc->bcn_li_bcn;
5912 case IOV_QTXPOWER: {
5916 err = wlc_phy_txpower_get(wlc->band->pi, &qdbm,
5921 /* Return qdbm units */
5923 qdbm | (override ? WL_TXPWR_OVERRIDE : 0);
5927 *ret_int_ptr = (s32) wlc->mpc;