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>
23 #include <brcm_hw_ids.h>
24 #include <brcmu_utils.h>
25 #include <brcmu_wifi.h>
36 #include "phy/phy_hal.h"
39 #include "bottom_mac.h"
45 #include "mac80211_if.h"
50 #define RSN_CAP_4_REPLAY_CNTRS 2
51 #define RSN_CAP_16_REPLAY_CNTRS 3
53 #define WPA_CAP_4_REPLAY_CNTRS RSN_CAP_4_REPLAY_CNTRS
54 #define WPA_CAP_16_REPLAY_CNTRS RSN_CAP_16_REPLAY_CNTRS
57 * Indication for txflowcontrol that all priority bits in
58 * TXQ_STOP_FOR_PRIOFC_MASK are to be considered.
63 * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
65 #define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
67 #define TIMER_INTERVAL_WATCHDOG 1000 /* watchdog timer, in unit of ms */
68 #define TIMER_INTERVAL_RADIOCHK 800 /* radio monitor timer, in unit of ms */
70 #ifndef WLC_MPC_MAX_DELAYCNT
71 #define WLC_MPC_MAX_DELAYCNT 10 /* Max MPC timeout, in unit of watchdog */
73 #define WLC_MPC_MIN_DELAYCNT 1 /* Min MPC timeout, in unit of watchdog */
74 #define WLC_MPC_THRESHOLD 3 /* MPC count threshold level */
76 #define BEACON_INTERVAL_DEFAULT 100 /* beacon interval, in unit of 1024TU */
77 #define DTIM_INTERVAL_DEFAULT 3 /* DTIM interval, in unit of beacon interval */
79 /* Scale down delays to accommodate QT slow speed */
80 #define BEACON_INTERVAL_DEF_QT 20 /* beacon interval, in unit of 1024TU */
81 #define DTIM_INTERVAL_DEF_QT 1 /* DTIM interval, in unit of beacon interval */
83 #define TBTT_ALIGN_LEEWAY_US 100 /* min leeway before first TBTT in us */
85 /* Software feature flag defines used by wlfeatureflag */
86 #define WL_SWFL_NOHWRADIO 0x0004
87 #define WL_SWFL_FLOWCONTROL 0x0008 /* Enable backpressure to OS stack */
88 #define WL_SWFL_WLBSSSORT 0x0010 /* Per-port supports sorting of BSS */
90 /* n-mode support capability */
91 /* 2x2 includes both 1x1 & 2x2 devices
92 * reserved #define 2 for future when we want to separate 1x1 & 2x2 and
93 * control it independently
99 /* define 11n feature disable flags */
100 #define WLFEATURE_DISABLE_11N 0x00000001
101 #define WLFEATURE_DISABLE_11N_STBC_TX 0x00000002
102 #define WLFEATURE_DISABLE_11N_STBC_RX 0x00000004
103 #define WLFEATURE_DISABLE_11N_SGI_TX 0x00000008
104 #define WLFEATURE_DISABLE_11N_SGI_RX 0x00000010
105 #define WLFEATURE_DISABLE_11N_AMPDU_TX 0x00000020
106 #define WLFEATURE_DISABLE_11N_AMPDU_RX 0x00000040
107 #define WLFEATURE_DISABLE_11N_GF 0x00000080
109 #define EDCF_ACI_MASK 0x60
110 #define EDCF_ACI_SHIFT 5
111 #define EDCF_ECWMIN_MASK 0x0f
112 #define EDCF_ECWMAX_SHIFT 4
113 #define EDCF_AIFSN_MASK 0x0f
114 #define EDCF_AIFSN_MAX 15
115 #define EDCF_ECWMAX_MASK 0xf0
117 #define EDCF_AC_BE_TXOP_STA 0x0000
118 #define EDCF_AC_BK_TXOP_STA 0x0000
119 #define EDCF_AC_VO_ACI_STA 0x62
120 #define EDCF_AC_VO_ECW_STA 0x32
121 #define EDCF_AC_VI_ACI_STA 0x42
122 #define EDCF_AC_VI_ECW_STA 0x43
123 #define EDCF_AC_BK_ECW_STA 0xA4
124 #define EDCF_AC_VI_TXOP_STA 0x005e
125 #define EDCF_AC_VO_TXOP_STA 0x002f
126 #define EDCF_AC_BE_ACI_STA 0x03
127 #define EDCF_AC_BE_ECW_STA 0xA4
128 #define EDCF_AC_BK_ACI_STA 0x27
129 #define EDCF_AC_VO_TXOP_AP 0x002f
131 #define EDCF_TXOP2USEC(txop) ((txop) << 5)
132 #define EDCF_ECW2CW(exp) ((1 << (exp)) - 1)
134 #define APHY_SYMBOL_TIME 4
135 #define APHY_PREAMBLE_TIME 16
136 #define APHY_SIGNAL_TIME 4
137 #define APHY_SIFS_TIME 16
138 #define APHY_SERVICE_NBITS 16
139 #define APHY_TAIL_NBITS 6
140 #define BPHY_SIFS_TIME 10
141 #define BPHY_PLCP_SHORT_TIME 96
143 #define PREN_PREAMBLE 24
144 #define PREN_MM_EXT 12
145 #define PREN_PREAMBLE_EXT 4
147 #define DOT11_MAC_HDR_LEN 24
148 #define DOT11_ACK_LEN 10
149 #define DOT11_BA_LEN 4
150 #define DOT11_OFDM_SIGNAL_EXTENSION 6
151 #define DOT11_MIN_FRAG_LEN 256
152 #define DOT11_RTS_LEN 16
153 #define DOT11_CTS_LEN 10
154 #define DOT11_BA_BITMAP_LEN 128
155 #define DOT11_MIN_BEACON_PERIOD 1
156 #define DOT11_MAX_BEACON_PERIOD 0xFFFF
157 #define DOT11_MAXNUMFRAGS 16
158 #define DOT11_MAX_FRAG_LEN 2346
160 #define BPHY_PLCP_TIME 192
161 #define RIFS_11N_TIME 2
164 #define WME_SUBTYPE_PARAM_IE 1
166 #define WME_OUI "\x00\x50\xf2"
174 * driver maintains internal 'tick'(wlc->pub->now) which increments in 1s OS timer(soft
175 * watchdog) it is not a wall clock and won't increment when driver is in "down" state
176 * this low resolution driver tick can be used for maintenance tasks such as phy
177 * calibration and scb update
180 /* To inform the ucode of the last mcast frame posted so that it can clear moredata bit */
181 #define BCMCFID(wlc, fid) wlc_bmac_write_shm((wlc)->hw, M_BCMC_FID, (fid))
183 #define WLC_WAR16165(wlc) (wlc->pub->sih->bustype == PCI_BUS && \
184 (!AP_ENAB(wlc->pub)) && (wlc->war16165))
187 uint brcm_msg_level =
194 /* Find basic rate for a given rate */
195 #define WLC_BASIC_RATE(wlc, rspec) (IS_MCS(rspec) ? \
196 (wlc)->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK].leg_ofdm] : \
197 (wlc)->band->basic_rate[rspec & RSPEC_RATE_MASK])
199 #define FRAMETYPE(r, mimoframe) (IS_MCS(r) ? mimoframe : (IS_CCK(r) ? FT_CCK : FT_OFDM))
201 #define RFDISABLE_DEFAULT 10000000 /* rfdisable delay timer 500 ms, runs of ALP clock */
203 #define WLC_TEMPSENSE_PERIOD 10 /* 10 second timeout */
205 #define SCAN_IN_PROGRESS(x) 0
207 #define EPI_VERSION_NUM 0x054b0b00
210 /* pointer to most recently allocated wl/wlc */
211 static struct wlc_info *wlc_info_dbg = (struct wlc_info *) (NULL);
214 const u8 prio2fifo[NUMPRIO] = {
215 TX_AC_BE_FIFO, /* 0 BE AC_BE Best Effort */
216 TX_AC_BK_FIFO, /* 1 BK AC_BK Background */
217 TX_AC_BK_FIFO, /* 2 -- AC_BK Background */
218 TX_AC_BE_FIFO, /* 3 EE AC_BE Best Effort */
219 TX_AC_VI_FIFO, /* 4 CL AC_VI Video */
220 TX_AC_VI_FIFO, /* 5 VI AC_VI Video */
221 TX_AC_VO_FIFO, /* 6 VO AC_VO Voice */
222 TX_AC_VO_FIFO /* 7 NC AC_VO Voice */
225 /* precedences numbers for wlc queues. These are twice as may levels as
227 * Odd numbers are used for HI priority traffic at same precedence levels
228 * These constants are used ONLY by wlc_prio2prec_map. Do not use them elsewhere.
230 #define _WLC_PREC_NONE 0 /* None = - */
231 #define _WLC_PREC_BK 2 /* BK - Background */
232 #define _WLC_PREC_BE 4 /* BE - Best-effort */
233 #define _WLC_PREC_EE 6 /* EE - Excellent-effort */
234 #define _WLC_PREC_CL 8 /* CL - Controlled Load */
235 #define _WLC_PREC_VI 10 /* Vi - Video */
236 #define _WLC_PREC_VO 12 /* Vo - Voice */
237 #define _WLC_PREC_NC 14 /* NC - Network Control */
239 #define MAXMACLIST 64 /* max # source MAC matches */
240 #define BCN_TEMPLATE_COUNT 2
242 #define WLC_BSSCFG_HW_BCN 0x20 /* The BSS is generating beacons in HW */
244 #define HWBCN_ENAB(cfg) (((cfg)->flags & WLC_BSSCFG_HW_BCN) != 0)
245 #define HWPRB_ENAB(cfg) (((cfg)->flags & WLC_BSSCFG_HW_PRB) != 0)
247 #define MBSS_BCN_ENAB(cfg) 0
248 #define MBSS_PRB_ENAB(cfg) 0
249 #define SOFTBCN_ENAB(pub) (0)
251 /* 802.1D Priority to precedence queue mapping */
252 const u8 wlc_prio2prec_map[] = {
253 _WLC_PREC_BE, /* 0 BE - Best-effort */
254 _WLC_PREC_BK, /* 1 BK - Background */
255 _WLC_PREC_NONE, /* 2 None = - */
256 _WLC_PREC_EE, /* 3 EE - Excellent-effort */
257 _WLC_PREC_CL, /* 4 CL - Controlled Load */
258 _WLC_PREC_VI, /* 5 Vi - Video */
259 _WLC_PREC_VO, /* 6 Vo - Voice */
260 _WLC_PREC_NC, /* 7 NC - Network Control */
263 /* Check if a particular BSS config is AP or STA */
264 #define BSSCFG_AP(cfg) (0)
265 #define BSSCFG_STA(cfg) (1)
266 #define BSSCFG_IBSS(cfg) (!(cfg)->BSS)
268 /* Iterator for "associated" STA bss configs:
269 (struct wlc_info *wlc, int idx, struct wlc_bsscfg *cfg) */
270 #define FOREACH_AS_STA(wlc, idx, cfg) \
271 for (idx = 0; (int) idx < WLC_MAXBSSCFG; idx++) \
272 if ((cfg = (wlc)->bsscfg[idx]) && BSSCFG_STA(cfg) && cfg->associated)
274 /* As above for all non-NULL BSS configs */
275 #define FOREACH_BSS(wlc, idx, cfg) \
276 for (idx = 0; (int) idx < WLC_MAXBSSCFG; idx++) \
277 if ((cfg = (wlc)->bsscfg[idx]))
279 /* Sanity check for tx_prec_map and fifo synchup
280 * Either there are some packets pending for the fifo, else if fifo is empty then
281 * all the corresponding precmap bits should be set
283 #define WLC_TX_FIFO_CHECK(wlc, fifo) (TXPKTPENDGET((wlc), (fifo)) || \
284 (TXPKTPENDGET((wlc), (fifo)) == 0 && \
285 ((wlc)->tx_prec_map & (wlc)->fifo2prec_map[(fifo)]) == \
286 (wlc)->fifo2prec_map[(fifo)]))
288 /* TX FIFO number to WME/802.1E Access Category */
289 const u8 wme_fifo2ac[] = { AC_BK, AC_BE, AC_VI, AC_VO, AC_BE, AC_BE };
291 /* WME/802.1E Access Category to TX FIFO number */
292 static const u8 wme_ac2fifo[] = { 1, 0, 2, 3 };
294 static bool in_send_q = false;
296 /* Shared memory location index for various AC params */
297 #define wme_shmemacindex(ac) wme_ac2fifo[ac]
300 static const char *fifo_names[] = {
301 "AC_BK", "AC_BE", "AC_VI", "AC_VO", "BCMC", "ATIM" };
303 static const char fifo_names[6][0];
306 static const u8 acbitmap2maxprio[] = {
307 PRIO_8021D_BE, PRIO_8021D_BE, PRIO_8021D_BK, PRIO_8021D_BK,
308 PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI,
309 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO,
310 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO
313 /* currently the best mechanism for determining SIFS is the band in use */
314 #define SIFS(band) ((band)->bandtype == WLC_BAND_5G ? APHY_SIFS_TIME : BPHY_SIFS_TIME);
316 /* value for # replay counters currently supported */
317 #define WLC_REPLAY_CNTRS_VALUE WPA_CAP_16_REPLAY_CNTRS
319 /* local prototypes */
320 static u16 wlc_d11hdrs_mac80211(struct wlc_info *wlc,
321 struct ieee80211_hw *hw,
323 struct scb *scb, uint frag,
324 uint nfrags, uint queue,
327 ratespec_t rspec_override);
328 static void wlc_bss_default_init(struct wlc_info *wlc);
329 static void wlc_ucode_mac_upd(struct wlc_info *wlc);
330 static ratespec_t mac80211_wlc_set_nrate(struct wlc_info *wlc,
331 struct wlcband *cur_band, u32 int_val);
332 static void wlc_tx_prec_map_init(struct wlc_info *wlc);
333 static void wlc_watchdog(void *arg);
334 static void wlc_watchdog_by_timer(void *arg);
335 static u16 wlc_rate_shm_offset(struct wlc_info *wlc, u8 rate);
336 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg);
337 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc);
339 /* send and receive */
340 static struct wlc_txq_info *wlc_txq_alloc(struct wlc_info *wlc);
341 static void wlc_txq_free(struct wlc_info *wlc,
342 struct wlc_txq_info *qi);
343 static void wlc_txflowcontrol_signal(struct wlc_info *wlc,
344 struct wlc_txq_info *qi,
346 static void wlc_txflowcontrol_reset(struct wlc_info *wlc);
347 static void wlc_compute_cck_plcp(struct wlc_info *wlc, ratespec_t rate,
348 uint length, u8 *plcp);
349 static void wlc_compute_ofdm_plcp(ratespec_t rate, uint length, u8 *plcp);
350 static void wlc_compute_mimo_plcp(ratespec_t rate, uint length, u8 *plcp);
351 static u16 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate,
352 u8 preamble_type, uint next_frag_len);
353 static u64 wlc_recover_tsf64(struct wlc_info *wlc, struct wlc_d11rxhdr *rxh);
354 static void wlc_recvctl(struct wlc_info *wlc,
355 d11rxhdr_t *rxh, struct sk_buff *p);
356 static uint wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t rate,
357 u8 preamble_type, uint dur);
358 static uint wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rate,
360 static uint wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rate,
362 /* interrupt, up/down, band */
363 static void wlc_setband(struct wlc_info *wlc, uint bandunit);
364 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc);
365 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec);
366 static void wlc_bsinit(struct wlc_info *wlc);
367 static int wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
369 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc);
370 static bool wlc_radio_monitor_start(struct wlc_info *wlc);
371 static void wlc_radio_timer(void *arg);
372 static void wlc_radio_enable(struct wlc_info *wlc);
373 static void wlc_radio_upd(struct wlc_info *wlc);
375 /* scan, association, BSS */
376 static uint wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rate,
378 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap);
379 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val);
380 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val);
381 static void wlc_war16165(struct wlc_info *wlc, bool tx);
383 static void wlc_wme_retries_write(struct wlc_info *wlc);
384 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc);
385 static uint wlc_attach_module(struct wlc_info *wlc);
386 static void wlc_detach_module(struct wlc_info *wlc);
387 static void wlc_timers_deinit(struct wlc_info *wlc);
388 static void wlc_down_led_upd(struct wlc_info *wlc);
389 static uint wlc_down_del_timer(struct wlc_info *wlc);
390 static void wlc_ofdm_rateset_war(struct wlc_info *wlc);
391 static int _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
392 struct wlc_if *wlcif);
394 /* conditions under which the PM bit should be set in outgoing frames and STAY_AWAKE is meaningful
396 bool wlc_ps_allowed(struct wlc_info *wlc)
399 struct wlc_bsscfg *cfg;
401 /* disallow PS when one of the following global conditions meets */
402 if (!wlc->pub->associated)
405 /* disallow PS when one of these meets when not scanning */
406 if (AP_ACTIVE(wlc) || wlc->monitor)
409 FOREACH_AS_STA(wlc, idx, cfg) {
410 /* disallow PS when one of the following bsscfg specific conditions meets */
411 if (!cfg->BSS || !WLC_PORTOPEN(cfg))
414 if (!cfg->dtim_programmed)
421 void wlc_reset(struct wlc_info *wlc)
423 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
425 /* slurp up hw mac counters before core reset */
428 /* reset our snapshot of macstat counters */
429 memset((char *)wlc->core->macstat_snapshot, 0,
432 wlc_bmac_reset(wlc->hw);
435 void wlc_fatal_error(struct wlc_info *wlc)
437 wiphy_err(wlc->wiphy, "wl%d: fatal error, reinitializing\n",
442 /* Return the channel the driver should initialize during wlc_init.
443 * the channel may have to be changed from the currently configured channel
444 * if other configurations are in conflict (bandlocked, 11n mode disabled,
445 * invalid channel for current country, etc.)
447 static chanspec_t wlc_init_chanspec(struct wlc_info *wlc)
449 chanspec_t chanspec =
450 1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
456 struct scb global_scb;
458 static void wlc_init_scb(struct wlc_info *wlc, struct scb *scb)
461 scb->flags = SCB_WMECAP | SCB_HTCAP;
462 for (i = 0; i < NUMPRIO; i++)
466 void wlc_init(struct wlc_info *wlc)
471 struct wlc_bsscfg *bsscfg;
474 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
478 /* This will happen if a big-hammer was executed. In that case, we want to go back
479 * to the channel that we were on and not new channel
481 if (wlc->pub->associated)
482 chanspec = wlc->home_chanspec;
484 chanspec = wlc_init_chanspec(wlc);
486 wlc_bmac_init(wlc->hw, chanspec, mute);
488 /* update beacon listen interval */
491 /* the world is new again, so is our reported rate */
492 wlc_reprate_init(wlc);
494 /* write ethernet address to core */
495 FOREACH_BSS(wlc, i, bsscfg) {
497 wlc_set_bssid(bsscfg);
500 /* Update tsf_cfprep if associated and up */
501 if (wlc->pub->associated) {
502 FOREACH_BSS(wlc, i, bsscfg) {
506 /* get beacon period and convert to uS */
507 bi = bsscfg->current_bss->beacon_period << 10;
509 * update since init path would reset
512 W_REG(®s->tsf_cfprep,
513 (bi << CFPREP_CBI_SHIFT));
515 /* Update maccontrol PM related bits */
516 wlc_set_ps_ctrl(wlc);
523 wlc_bandinit_ordered(wlc, chanspec);
525 wlc_init_scb(wlc, &global_scb);
527 /* init probe response timeout */
528 wlc_write_shm(wlc, M_PRS_MAXTIME, wlc->prb_resp_timeout);
530 /* init max burst txop (framebursting) */
531 wlc_write_shm(wlc, M_MBURST_TXOP,
533 _rifs ? (EDCF_AC_VO_TXOP_AP << 5) : MAXFRAMEBURST_TXOP));
535 /* initialize maximum allowed duty cycle */
536 wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_ofdm, true, true);
537 wlc_duty_cycle_set(wlc, wlc->tx_duty_cycle_cck, false, true);
539 /* Update some shared memory locations related to max AMPDU size allowed to received */
540 wlc_ampdu_shm_upd(wlc->ampdu);
542 /* band-specific inits */
545 /* Enable EDCF mode (while the MAC is suspended) */
546 if (EDCF_ENAB(wlc->pub)) {
547 OR_REG(®s->ifs_ctl, IFS_USEEDCF);
548 wlc_edcf_setparams(wlc, false);
551 /* Init precedence maps for empty FIFOs */
552 wlc_tx_prec_map_init(wlc);
554 /* read the ucode version if we have not yet done so */
555 if (wlc->ucode_rev == 0) {
557 wlc_read_shm(wlc, M_BOM_REV_MAJOR) << NBITS(u16);
558 wlc->ucode_rev |= wlc_read_shm(wlc, M_BOM_REV_MINOR);
561 /* ..now really unleash hell (allow the MAC out of suspend) */
564 /* clear tx flow control */
565 wlc_txflowcontrol_reset(wlc);
567 /* clear tx data fifo suspends */
568 wlc->tx_suspended = false;
570 /* enable the RF Disable Delay timer */
571 W_REG(&wlc->regs->rfdisabledly, RFDISABLE_DEFAULT);
573 /* initialize mpc delay */
574 wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
577 * Initialize WME parameters; if they haven't been set by some other
578 * mechanism (IOVar, etc) then read them from the hardware.
580 if (WLC_WME_RETRY_SHORT_GET(wlc, 0) == 0) { /* Uninitialized; read from HW */
583 for (ac = 0; ac < AC_COUNT; ac++) {
584 wlc->wme_retries[ac] =
585 wlc_read_shm(wlc, M_AC_TXLMT_ADDR(ac));
590 void wlc_mac_bcn_promisc_change(struct wlc_info *wlc, bool promisc)
592 wlc->bcnmisc_monitor = promisc;
593 wlc_mac_bcn_promisc(wlc);
596 void wlc_mac_bcn_promisc(struct wlc_info *wlc)
598 if ((AP_ENAB(wlc->pub) && (N_ENAB(wlc->pub) || wlc->band->gmode)) ||
599 wlc->bcnmisc_ibss || wlc->bcnmisc_scan || wlc->bcnmisc_monitor)
600 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, MCTL_BCNS_PROMISC);
602 wlc_mctrl(wlc, MCTL_BCNS_PROMISC, 0);
605 /* set or clear maccontrol bits MCTL_PROMISC and MCTL_KEEPCONTROL */
606 void wlc_mac_promisc(struct wlc_info *wlc)
608 u32 promisc_bits = 0;
610 /* promiscuous mode just sets MCTL_PROMISC
611 * Note: APs get all BSS traffic without the need to set the MCTL_PROMISC bit
612 * since all BSS data traffic is directed at the AP
614 if (PROMISC_ENAB(wlc->pub) && !AP_ENAB(wlc->pub))
615 promisc_bits |= MCTL_PROMISC;
617 /* monitor mode needs both MCTL_PROMISC and MCTL_KEEPCONTROL
618 * Note: monitor mode also needs MCTL_BCNS_PROMISC, but that is
619 * handled in wlc_mac_bcn_promisc()
621 if (MONITOR_ENAB(wlc))
622 promisc_bits |= MCTL_PROMISC | MCTL_KEEPCONTROL;
624 wlc_mctrl(wlc, MCTL_PROMISC | MCTL_KEEPCONTROL, promisc_bits);
627 /* push sw hps and wake state through hardware */
628 void wlc_set_ps_ctrl(struct wlc_info *wlc)
634 hps = PS_ALLOWED(wlc);
636 BCMMSG(wlc->wiphy, "wl%d: hps %d\n", wlc->pub->unit, hps);
638 v1 = R_REG(&wlc->regs->maccontrol);
643 wlc_mctrl(wlc, MCTL_WAKE | MCTL_HPS, v2);
645 awake_before = ((v1 & MCTL_WAKE) || ((v1 & MCTL_HPS) == 0));
648 wlc_bmac_wait_for_wake(wlc->hw);
653 * Write this BSS config's MAC address to core.
654 * Updates RXE match engine.
656 int wlc_set_mac(struct wlc_bsscfg *cfg)
659 struct wlc_info *wlc = cfg->wlc;
661 if (cfg == wlc->cfg) {
662 /* enter the MAC addr into the RXE match registers */
663 wlc_set_addrmatch(wlc, RCM_MAC_OFFSET, cfg->cur_etheraddr);
666 wlc_ampdu_macaddr_upd(wlc);
671 /* Write the BSS config's BSSID address to core (set_bssid in d11procs.tcl).
672 * Updates RXE match engine.
674 void wlc_set_bssid(struct wlc_bsscfg *cfg)
676 struct wlc_info *wlc = cfg->wlc;
678 /* if primary config, we need to update BSSID in RXE match registers */
679 if (cfg == wlc->cfg) {
680 wlc_set_addrmatch(wlc, RCM_BSSID_OFFSET, cfg->BSSID);
682 #ifdef SUPPORT_HWKEYS
683 else if (BSSCFG_STA(cfg) && cfg->BSS) {
684 wlc_rcmta_add_bssid(wlc, cfg);
690 * Suspend the the MAC and update the slot timing
691 * for standard 11b/g (20us slots) or shortslot 11g (9us slots).
693 void wlc_switch_shortslot(struct wlc_info *wlc, bool shortslot)
696 struct wlc_bsscfg *cfg;
698 /* use the override if it is set */
699 if (wlc->shortslot_override != WLC_SHORTSLOT_AUTO)
700 shortslot = (wlc->shortslot_override == WLC_SHORTSLOT_ON);
702 if (wlc->shortslot == shortslot)
705 wlc->shortslot = shortslot;
707 /* update the capability based on current shortslot mode */
708 FOREACH_BSS(wlc, idx, cfg) {
709 if (!cfg->associated)
711 cfg->current_bss->capability &=
712 ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
714 cfg->current_bss->capability |=
715 WLAN_CAPABILITY_SHORT_SLOT_TIME;
718 wlc_bmac_set_shortslot(wlc->hw, shortslot);
721 static u8 wlc_local_constraint_qdbm(struct wlc_info *wlc)
726 local = WLC_TXPWR_MAX;
727 if (wlc->pub->associated &&
728 (brcmu_chspec_ctlchan(wlc->chanspec) ==
729 brcmu_chspec_ctlchan(wlc->home_chanspec))) {
731 /* get the local power constraint if we are on the AP's
732 * channel [802.11h, 7.3.2.13]
734 /* Clamp the value between 0 and WLC_TXPWR_MAX w/o overflowing the target */
736 (wlc->txpwr_local_max -
737 wlc->txpwr_local_constraint) * WLC_TXPWR_DB_FACTOR;
738 if (local_max > 0 && local_max < WLC_TXPWR_MAX)
739 return (u8) local_max;
747 /* propagate home chanspec to all bsscfgs in case bsscfg->current_bss->chanspec is referenced */
748 void wlc_set_home_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
750 if (wlc->home_chanspec != chanspec) {
752 struct wlc_bsscfg *cfg;
754 wlc->home_chanspec = chanspec;
756 FOREACH_BSS(wlc, idx, cfg) {
757 if (!cfg->associated)
760 cfg->current_bss->chanspec = chanspec;
766 static void wlc_set_phy_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
768 /* Save our copy of the chanspec */
769 wlc->chanspec = chanspec;
771 /* Set the chanspec and power limits for this locale after computing
772 * any 11h local tx power constraints.
774 wlc_channel_set_chanspec(wlc->cmi, chanspec,
775 wlc_local_constraint_qdbm(wlc));
777 if (wlc->stf->ss_algosel_auto)
778 wlc_stf_ss_algo_channel_get(wlc, &wlc->stf->ss_algo_channel,
781 wlc_stf_ss_update(wlc, wlc->band);
785 void wlc_set_chanspec(struct wlc_info *wlc, chanspec_t chanspec)
788 bool switchband = false;
789 chanspec_t old_chanspec = wlc->chanspec;
791 if (!wlc_valid_chanspec_db(wlc->cmi, chanspec)) {
792 wiphy_err(wlc->wiphy, "wl%d: %s: Bad channel %d\n",
793 wlc->pub->unit, __func__, CHSPEC_CHANNEL(chanspec));
797 /* Switch bands if necessary */
798 if (NBANDS(wlc) > 1) {
799 bandunit = CHSPEC_WLCBANDUNIT(chanspec);
800 if (wlc->band->bandunit != bandunit || wlc->bandinit_pending) {
802 if (wlc->bandlocked) {
803 wiphy_err(wlc->wiphy, "wl%d: %s: chspec %d "
805 wlc->pub->unit, __func__,
806 CHSPEC_CHANNEL(chanspec));
809 /* BMAC_NOTE: should the setband call come after the wlc_bmac_chanspec() ?
810 * if the setband updates (wlc_bsinit) use low level calls to inspect and
811 * set state, the state inspected may be from the wrong band, or the
812 * following wlc_bmac_set_chanspec() may undo the work.
814 wlc_setband(wlc, bandunit);
818 /* sync up phy/radio chanspec */
819 wlc_set_phy_chanspec(wlc, chanspec);
821 /* init antenna selection */
822 if (CHSPEC_WLC_BW(old_chanspec) != CHSPEC_WLC_BW(chanspec)) {
823 wlc_antsel_init(wlc->asi);
825 /* Fix the hardware rateset based on bw.
826 * Mainly add MCS32 for 40Mhz, remove MCS 32 for 20Mhz
828 wlc_rateset_bw_mcs_filter(&wlc->band->hw_rateset,
830 mimo_cap_40 ? CHSPEC_WLC_BW(chanspec)
834 /* update some mac configuration since chanspec changed */
835 wlc_ucode_mac_upd(wlc);
838 ratespec_t wlc_lowest_basic_rspec(struct wlc_info *wlc, wlc_rateset_t *rs)
840 ratespec_t lowest_basic_rspec;
843 /* Use the lowest basic rate */
844 lowest_basic_rspec = rs->rates[0] & WLC_RATE_MASK;
845 for (i = 0; i < rs->count; i++) {
846 if (rs->rates[i] & WLC_RATE_FLAG) {
847 lowest_basic_rspec = rs->rates[i] & WLC_RATE_MASK;
852 /* pick siso/cdd as default for OFDM (note no basic rate MCSs are supported yet) */
853 if (IS_OFDM(lowest_basic_rspec)) {
854 lowest_basic_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
858 return lowest_basic_rspec;
861 /* This function changes the phytxctl for beacon based on current beacon ratespec AND txant
862 * setting as per this table:
863 * ratespec CCK ant = wlc->stf->txant
866 void wlc_beacon_phytxctl_txant_upd(struct wlc_info *wlc, ratespec_t bcn_rspec)
869 u16 phytxant = wlc->stf->phytxant;
870 u16 mask = PHY_TXC_ANT_MASK;
872 /* for non-siso rates or default setting, use the available chains */
873 if (WLC_PHY_11N_CAP(wlc->band)) {
874 phytxant = wlc_stf_phytxchain_sel(wlc, bcn_rspec);
877 phyctl = wlc_read_shm(wlc, M_BCN_PCTLWD);
878 phyctl = (phyctl & ~mask) | phytxant;
879 wlc_write_shm(wlc, M_BCN_PCTLWD, phyctl);
882 /* centralized protection config change function to simplify debugging, no consistency checking
883 * this should be called only on changes to avoid overhead in periodic function
885 void wlc_protection_upd(struct wlc_info *wlc, uint idx, int val)
887 BCMMSG(wlc->wiphy, "idx %d, val %d\n", idx, val);
890 case WLC_PROT_G_SPEC:
891 wlc->protection->_g = (bool) val;
894 wlc->protection->g_override = (s8) val;
896 case WLC_PROT_G_USER:
897 wlc->protection->gmode_user = (u8) val;
899 case WLC_PROT_OVERLAP:
900 wlc->protection->overlap = (s8) val;
902 case WLC_PROT_N_USER:
903 wlc->protection->nmode_user = (s8) val;
906 wlc->protection->n_cfg = (s8) val;
908 case WLC_PROT_N_CFG_OVR:
909 wlc->protection->n_cfg_override = (s8) val;
911 case WLC_PROT_N_NONGF:
912 wlc->protection->nongf = (bool) val;
914 case WLC_PROT_N_NONGF_OVR:
915 wlc->protection->nongf_override = (s8) val;
917 case WLC_PROT_N_PAM_OVR:
918 wlc->protection->n_pam_override = (s8) val;
920 case WLC_PROT_N_OBSS:
921 wlc->protection->n_obss = (bool) val;
930 static void wlc_ht_update_sgi_rx(struct wlc_info *wlc, int val)
932 wlc->ht_cap.cap_info &= ~(IEEE80211_HT_CAP_SGI_20 |
933 IEEE80211_HT_CAP_SGI_40);
934 wlc->ht_cap.cap_info |= (val & WLC_N_SGI_20) ?
935 IEEE80211_HT_CAP_SGI_20 : 0;
936 wlc->ht_cap.cap_info |= (val & WLC_N_SGI_40) ?
937 IEEE80211_HT_CAP_SGI_40 : 0;
940 wlc_update_beacon(wlc);
941 wlc_update_probe_resp(wlc, true);
945 static void wlc_ht_update_ldpc(struct wlc_info *wlc, s8 val)
947 wlc->stf->ldpc = val;
949 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_LDPC_CODING;
950 if (wlc->stf->ldpc != OFF)
951 wlc->ht_cap.cap_info |= IEEE80211_HT_CAP_LDPC_CODING;
954 wlc_update_beacon(wlc);
955 wlc_update_probe_resp(wlc, true);
956 wlc_phy_ldpc_override_set(wlc->band->pi, (val ? true : false));
961 * ucode, hwmac update
962 * Channel dependent updates for ucode and hw
964 static void wlc_ucode_mac_upd(struct wlc_info *wlc)
966 /* enable or disable any active IBSSs depending on whether or not
967 * we are on the home channel
969 if (wlc->home_chanspec == WLC_BAND_PI_RADIO_CHANSPEC) {
970 if (wlc->pub->associated) {
971 /* BMAC_NOTE: This is something that should be fixed in ucode inits.
972 * I think that the ucode inits set up the bcn templates and shm values
973 * with a bogus beacon. This should not be done in the inits. If ucode needs
974 * to set up a beacon for testing, the test routines should write it down,
975 * not expect the inits to populate a bogus beacon.
977 if (WLC_PHY_11N_CAP(wlc->band)) {
978 wlc_write_shm(wlc, M_BCN_TXTSF_OFFSET,
979 wlc->band->bcntsfoff);
983 /* disable an active IBSS if we are not on the home channel */
986 /* update the various promisc bits */
987 wlc_mac_bcn_promisc(wlc);
988 wlc_mac_promisc(wlc);
991 static void wlc_bandinit_ordered(struct wlc_info *wlc, chanspec_t chanspec)
993 wlc_rateset_t default_rateset;
995 uint i, band_order[2];
997 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
999 * We might have been bandlocked during down and the chip power-cycled (hibernate).
1000 * figure out the right band to park on
1002 if (wlc->bandlocked || NBANDS(wlc) == 1) {
1003 parkband = wlc->band->bandunit; /* updated in wlc_bandlock() */
1004 band_order[0] = band_order[1] = parkband;
1006 /* park on the band of the specified chanspec */
1007 parkband = CHSPEC_WLCBANDUNIT(chanspec);
1009 /* order so that parkband initialize last */
1010 band_order[0] = parkband ^ 1;
1011 band_order[1] = parkband;
1014 /* make each band operational, software state init */
1015 for (i = 0; i < NBANDS(wlc); i++) {
1016 uint j = band_order[i];
1018 wlc->band = wlc->bandstate[j];
1020 wlc_default_rateset(wlc, &default_rateset);
1022 /* fill in hw_rate */
1023 wlc_rateset_filter(&default_rateset, &wlc->band->hw_rateset,
1024 false, WLC_RATES_CCK_OFDM, WLC_RATE_MASK,
1025 (bool) N_ENAB(wlc->pub));
1027 /* init basic rate lookup */
1028 wlc_rate_lookup_init(wlc, &default_rateset);
1031 /* sync up phy/radio chanspec */
1032 wlc_set_phy_chanspec(wlc, chanspec);
1035 /* band-specific init */
1036 static void WLBANDINITFN(wlc_bsinit) (struct wlc_info *wlc)
1038 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n",
1039 wlc->pub->unit, wlc->band->bandunit);
1041 /* write ucode ACK/CTS rate table */
1042 wlc_set_ratetable(wlc);
1044 /* update some band specific mac configuration */
1045 wlc_ucode_mac_upd(wlc);
1047 /* init antenna selection */
1048 wlc_antsel_init(wlc->asi);
1052 /* switch to and initialize new band */
1053 static void WLBANDINITFN(wlc_setband) (struct wlc_info *wlc, uint bandunit)
1056 struct wlc_bsscfg *cfg;
1058 wlc->band = wlc->bandstate[bandunit];
1063 /* wait for at least one beacon before entering sleeping state */
1064 FOREACH_AS_STA(wlc, idx, cfg)
1065 cfg->PMawakebcn = true;
1066 wlc_set_ps_ctrl(wlc);
1068 /* band-specific initializations */
1072 /* Initialize a WME Parameter Info Element with default STA parameters from WMM Spec, Table 12 */
1073 void wlc_wme_initparams_sta(struct wlc_info *wlc, wme_param_ie_t *pe)
1075 static const wme_param_ie_t stadef = {
1078 WME_SUBTYPE_PARAM_IE,
1083 {EDCF_AC_BE_ACI_STA, EDCF_AC_BE_ECW_STA,
1084 cpu_to_le16(EDCF_AC_BE_TXOP_STA)},
1085 {EDCF_AC_BK_ACI_STA, EDCF_AC_BK_ECW_STA,
1086 cpu_to_le16(EDCF_AC_BK_TXOP_STA)},
1087 {EDCF_AC_VI_ACI_STA, EDCF_AC_VI_ECW_STA,
1088 cpu_to_le16(EDCF_AC_VI_TXOP_STA)},
1089 {EDCF_AC_VO_ACI_STA, EDCF_AC_VO_ECW_STA,
1090 cpu_to_le16(EDCF_AC_VO_TXOP_STA)}
1093 memcpy(pe, &stadef, sizeof(*pe));
1096 void wlc_wme_setparams(struct wlc_info *wlc, u16 aci,
1097 const struct ieee80211_tx_queue_params *params,
1101 shm_acparams_t acp_shm;
1104 /* Only apply params if the core is out of reset and has clocks */
1106 wiphy_err(wlc->wiphy, "wl%d: %s : no-clock\n", wlc->pub->unit,
1112 memset((char *)&acp_shm, 0, sizeof(shm_acparams_t));
1113 /* fill in shm ac params struct */
1114 acp_shm.txop = le16_to_cpu(params->txop);
1115 /* convert from units of 32us to us for ucode */
1116 wlc->edcf_txop[aci & 0x3] = acp_shm.txop =
1117 EDCF_TXOP2USEC(acp_shm.txop);
1118 acp_shm.aifs = (params->aifs & EDCF_AIFSN_MASK);
1120 if (aci == AC_VI && acp_shm.txop == 0
1121 && acp_shm.aifs < EDCF_AIFSN_MAX)
1124 if (acp_shm.aifs < EDCF_AIFSN_MIN
1125 || acp_shm.aifs > EDCF_AIFSN_MAX) {
1126 wiphy_err(wlc->wiphy, "wl%d: wlc_edcf_setparams: bad "
1127 "aifs %d\n", wlc->pub->unit, acp_shm.aifs);
1131 acp_shm.cwmin = params->cw_min;
1132 acp_shm.cwmax = params->cw_max;
1133 acp_shm.cwcur = acp_shm.cwmin;
1135 R_REG(&wlc->regs->tsf_random) & acp_shm.cwcur;
1136 acp_shm.reggap = acp_shm.bslots + acp_shm.aifs;
1137 /* Indicate the new params to the ucode */
1138 acp_shm.status = wlc_read_shm(wlc, (M_EDCF_QINFO +
1139 wme_shmemacindex(aci) *
1141 M_EDCF_STATUS_OFF));
1142 acp_shm.status |= WME_STATUS_NEWAC;
1144 /* Fill in shm acparam table */
1145 shm_entry = (u16 *) &acp_shm;
1146 for (i = 0; i < (int)sizeof(shm_acparams_t); i += 2)
1149 wme_shmemacindex(aci) * M_EDCF_QLEN + i,
1155 wlc_suspend_mac_and_wait(wlc);
1158 wlc_enable_mac(wlc);
1162 void wlc_edcf_setparams(struct wlc_info *wlc, bool suspend)
1166 edcf_acparam_t *edcf_acp;
1168 struct ieee80211_tx_queue_params txq_pars;
1169 struct ieee80211_tx_queue_params *params = &txq_pars;
1172 * AP uses AC params from wme_param_ie_ap.
1173 * AP advertises AC params from wme_param_ie.
1174 * STA uses AC params from wme_param_ie.
1177 edcf_acp = (edcf_acparam_t *) &wlc->wme_param_ie.acparam[0];
1179 for (i_ac = 0; i_ac < AC_COUNT; i_ac++, edcf_acp++) {
1180 /* find out which ac this set of params applies to */
1181 aci = (edcf_acp->ACI & EDCF_ACI_MASK) >> EDCF_ACI_SHIFT;
1183 /* fill in shm ac params struct */
1184 params->txop = edcf_acp->TXOP;
1185 params->aifs = edcf_acp->ACI;
1187 /* CWmin = 2^(ECWmin) - 1 */
1188 params->cw_min = EDCF_ECW2CW(edcf_acp->ECW & EDCF_ECWMIN_MASK);
1189 /* CWmax = 2^(ECWmax) - 1 */
1190 params->cw_max = EDCF_ECW2CW((edcf_acp->ECW & EDCF_ECWMAX_MASK)
1191 >> EDCF_ECWMAX_SHIFT);
1192 wlc_wme_setparams(wlc, aci, params, suspend);
1196 wlc_suspend_mac_and_wait(wlc);
1198 if (AP_ENAB(wlc->pub) && WME_ENAB(wlc->pub)) {
1199 wlc_update_beacon(wlc);
1200 wlc_update_probe_resp(wlc, false);
1204 wlc_enable_mac(wlc);
1208 bool wlc_timers_init(struct wlc_info *wlc, int unit)
1210 wlc->wdtimer = brcms_init_timer(wlc->wl, wlc_watchdog_by_timer,
1212 if (!wlc->wdtimer) {
1213 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for wdtimer "
1218 wlc->radio_timer = brcms_init_timer(wlc->wl, wlc_radio_timer,
1220 if (!wlc->radio_timer) {
1221 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for radio_timer "
1233 * Initialize wlc_info default values ...
1234 * may get overrides later in this function
1236 void wlc_info_init(struct wlc_info *wlc, int unit)
1239 /* Assume the device is there until proven otherwise */
1240 wlc->device_present = true;
1242 /* Save our copy of the chanspec */
1243 wlc->chanspec = CH20MHZ_CHSPEC(1);
1245 /* various 802.11g modes */
1246 wlc->shortslot = false;
1247 wlc->shortslot_override = WLC_SHORTSLOT_AUTO;
1249 wlc_protection_upd(wlc, WLC_PROT_G_OVR, WLC_PROTECTION_AUTO);
1250 wlc_protection_upd(wlc, WLC_PROT_G_SPEC, false);
1252 wlc_protection_upd(wlc, WLC_PROT_N_CFG_OVR, WLC_PROTECTION_AUTO);
1253 wlc_protection_upd(wlc, WLC_PROT_N_CFG, WLC_N_PROTECTION_OFF);
1254 wlc_protection_upd(wlc, WLC_PROT_N_NONGF_OVR, WLC_PROTECTION_AUTO);
1255 wlc_protection_upd(wlc, WLC_PROT_N_NONGF, false);
1256 wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR, AUTO);
1258 wlc_protection_upd(wlc, WLC_PROT_OVERLAP, WLC_PROTECTION_CTL_OVERLAP);
1260 /* 802.11g draft 4.0 NonERP elt advertisement */
1261 wlc->include_legacy_erp = true;
1263 wlc->stf->ant_rx_ovr = ANT_RX_DIV_DEF;
1264 wlc->stf->txant = ANT_TX_DEF;
1266 wlc->prb_resp_timeout = WLC_PRB_RESP_TIMEOUT;
1268 wlc->usr_fragthresh = DOT11_DEFAULT_FRAG_LEN;
1269 for (i = 0; i < NFIFO; i++)
1270 wlc->fragthresh[i] = DOT11_DEFAULT_FRAG_LEN;
1271 wlc->RTSThresh = DOT11_DEFAULT_RTS_LEN;
1273 /* default rate fallback retry limits */
1274 wlc->SFBL = RETRY_SHORT_FB;
1275 wlc->LFBL = RETRY_LONG_FB;
1277 /* default mac retry limits */
1278 wlc->SRL = RETRY_SHORT_DEF;
1279 wlc->LRL = RETRY_LONG_DEF;
1281 /* Set flag to indicate that hw keys should be used when available. */
1282 wlc->wsec_swkeys = false;
1284 /* init the 4 static WEP default keys */
1285 for (i = 0; i < WSEC_MAX_DEFAULT_KEYS; i++) {
1286 wlc->wsec_keys[i] = wlc->wsec_def_keys[i];
1287 wlc->wsec_keys[i]->idx = (u8) i;
1290 /* WME QoS mode is Auto by default */
1291 wlc->pub->_wme = AUTO;
1293 #ifdef BCMSDIODEV_ENABLED
1294 wlc->pub->_priofc = true; /* enable priority flow control for sdio dongle */
1297 wlc->pub->_ampdu = AMPDU_AGG_HOST;
1298 wlc->pub->bcmerror = 0;
1299 wlc->pub->_coex = ON;
1301 /* initialize mpc delay */
1302 wlc->mpc_delay_off = wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
1305 static bool wlc_state_bmac_sync(struct wlc_info *wlc)
1307 wlc_bmac_state_t state_bmac;
1309 if (wlc_bmac_state_get(wlc->hw, &state_bmac) != 0)
1312 wlc->machwcap = state_bmac.machwcap;
1313 wlc_protection_upd(wlc, WLC_PROT_N_PAM_OVR,
1314 (s8) state_bmac.preamble_ovr);
1319 static uint wlc_attach_module(struct wlc_info *wlc)
1323 unit = wlc->pub->unit;
1325 wlc->asi = wlc_antsel_attach(wlc);
1326 if (wlc->asi == NULL) {
1327 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_antsel_attach "
1333 wlc->ampdu = wlc_ampdu_attach(wlc);
1334 if (wlc->ampdu == NULL) {
1335 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_ampdu_attach "
1341 if ((wlc_stf_attach(wlc) != 0)) {
1342 wiphy_err(wlc->wiphy, "wl%d: wlc_attach: wlc_stf_attach "
1351 struct wlc_pub *wlc_pub(void *wlc)
1353 return ((struct wlc_info *) wlc)->pub;
1356 #define CHIP_SUPPORTS_11N(wlc) 1
1359 * The common driver entry routine. Error codes should be unique
1361 void *wlc_attach(struct brcms_info *wl, u16 vendor, u16 device, uint unit,
1362 bool piomode, void *regsva, uint bustype, void *btparam,
1365 struct wlc_info *wlc;
1368 struct wlc_pub *pub;
1371 /* allocate struct wlc_info state and its substructures */
1372 wlc = (struct wlc_info *) wlc_attach_malloc(unit, &err, device);
1375 wlc->wiphy = wl->wiphy;
1382 wlc->band = wlc->bandstate[0];
1383 wlc->core = wlc->corestate;
1386 pub->_piomode = piomode;
1387 wlc->bandinit_pending = false;
1389 /* populate struct wlc_info with default values */
1390 wlc_info_init(wlc, unit);
1392 /* update sta/ap related parameters */
1395 /* 11n_disable nvram */
1396 n_disabled = getintvar(pub->vars, "11n_disable");
1399 * low level attach steps(all hw accesses go
1400 * inside, no more in rest of the attach)
1402 err = wlc_bmac_attach(wlc, vendor, device, unit, piomode, regsva,
1407 /* for some states, due to different info pointer(e,g, wlc, wlc_hw) or master/slave split,
1408 * HIGH driver(both monolithic and HIGH_ONLY) needs to sync states FROM BMAC portion driver
1410 if (!wlc_state_bmac_sync(wlc)) {
1415 pub->phy_11ncapable = WLC_PHY_11N_CAP(wlc->band);
1417 /* propagate *vars* from BMAC driver to high driver */
1418 wlc_bmac_copyfrom_vars(wlc->hw, &pub->vars, &wlc->vars_size);
1421 /* set maximum allowed duty cycle */
1422 wlc->tx_duty_cycle_ofdm =
1423 (u16) getintvar(pub->vars, "tx_duty_cycle_ofdm");
1424 wlc->tx_duty_cycle_cck =
1425 (u16) getintvar(pub->vars, "tx_duty_cycle_cck");
1427 wlc_stf_phy_chain_calc(wlc);
1429 /* txchain 1: txant 0, txchain 2: txant 1 */
1430 if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
1431 wlc->stf->txant = wlc->stf->hw_txchain - 1;
1433 /* push to BMAC driver */
1434 wlc_phy_stf_chain_init(wlc->band->pi, wlc->stf->hw_txchain,
1435 wlc->stf->hw_rxchain);
1437 /* pull up some info resulting from the low attach */
1440 for (i = 0; i < NFIFO; i++)
1441 wlc->core->txavail[i] = wlc->hw->txavail[i];
1444 wlc_bmac_hw_etheraddr(wlc->hw, wlc->perm_etheraddr);
1446 memcpy(&pub->cur_etheraddr, &wlc->perm_etheraddr, ETH_ALEN);
1448 for (j = 0; j < NBANDS(wlc); j++) {
1449 /* Use band 1 for single band 11a */
1450 if (IS_SINGLEBAND_5G(wlc->deviceid))
1453 wlc->band = wlc->bandstate[j];
1455 if (!wlc_attach_stf_ant_init(wlc)) {
1460 /* default contention windows size limits */
1461 wlc->band->CWmin = APHY_CWMIN;
1462 wlc->band->CWmax = PHY_CWMAX;
1464 /* init gmode value */
1465 if (BAND_2G(wlc->band->bandtype)) {
1466 wlc->band->gmode = GMODE_AUTO;
1467 wlc_protection_upd(wlc, WLC_PROT_G_USER,
1471 /* init _n_enab supported mode */
1472 if (WLC_PHY_11N_CAP(wlc->band) && CHIP_SUPPORTS_11N(wlc)) {
1473 if (n_disabled & WLFEATURE_DISABLE_11N) {
1475 wlc_protection_upd(wlc, WLC_PROT_N_USER, OFF);
1477 pub->_n_enab = SUPPORT_11N;
1478 wlc_protection_upd(wlc, WLC_PROT_N_USER,
1480 SUPPORT_11N) ? WL_11N_2x2 :
1485 /* init per-band default rateset, depend on band->gmode */
1486 wlc_default_rateset(wlc, &wlc->band->defrateset);
1488 /* fill in hw_rateset (used early by WLC_SET_RATESET) */
1489 wlc_rateset_filter(&wlc->band->defrateset,
1490 &wlc->band->hw_rateset, false,
1491 WLC_RATES_CCK_OFDM, WLC_RATE_MASK,
1492 (bool) N_ENAB(wlc->pub));
1495 /* update antenna config due to wlc->stf->txant/txchain/ant_rx_ovr change */
1496 wlc_stf_phy_txant_upd(wlc);
1498 /* attach each modules */
1499 err = wlc_attach_module(wlc);
1503 if (!wlc_timers_init(wlc, unit)) {
1504 wiphy_err(wl->wiphy, "wl%d: %s: wlc_init_timer failed\n", unit,
1510 /* depend on rateset, gmode */
1511 wlc->cmi = wlc_channel_mgr_attach(wlc);
1513 wiphy_err(wl->wiphy, "wl%d: %s: wlc_channel_mgr_attach failed"
1514 "\n", unit, __func__);
1519 /* init default when all parameters are ready, i.e. ->rateset */
1520 wlc_bss_default_init(wlc);
1523 * Complete the wlc default state initializations..
1526 /* allocate our initial queue */
1527 wlc->pkt_queue = wlc_txq_alloc(wlc);
1528 if (wlc->pkt_queue == NULL) {
1529 wiphy_err(wl->wiphy, "wl%d: %s: failed to malloc tx queue\n",
1535 wlc->bsscfg[0] = wlc->cfg;
1537 wlc->cfg->wlc = wlc;
1538 pub->txmaxpkts = MAXTXPKTS;
1540 wlc_wme_initparams_sta(wlc, &wlc->wme_param_ie);
1542 wlc->mimoft = FT_HT;
1543 wlc->ht_cap.cap_info = HT_CAP;
1544 if (HT_ENAB(wlc->pub))
1545 wlc->stf->ldpc = AUTO;
1547 wlc->mimo_40txbw = AUTO;
1548 wlc->ofdm_40txbw = AUTO;
1549 wlc->cck_40txbw = AUTO;
1550 wlc_update_mimo_band_bwcap(wlc, WLC_N_BW_20IN2G_40IN5G);
1552 /* Set default values of SGI */
1553 if (WLC_SGI_CAP_PHY(wlc)) {
1554 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1556 } else if (WLCISSSLPNPHY(wlc->band)) {
1557 wlc_ht_update_sgi_rx(wlc, (WLC_N_SGI_20 | WLC_N_SGI_40));
1560 wlc_ht_update_sgi_rx(wlc, 0);
1564 /* *******nvram 11n config overrides Start ********* */
1566 /* apply the sgi override from nvram conf */
1567 if (n_disabled & WLFEATURE_DISABLE_11N_SGI_TX)
1570 if (n_disabled & WLFEATURE_DISABLE_11N_SGI_RX)
1571 wlc_ht_update_sgi_rx(wlc, 0);
1573 /* apply the stbc override from nvram conf */
1574 if (n_disabled & WLFEATURE_DISABLE_11N_STBC_TX) {
1575 wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
1576 wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;
1577 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_TX_STBC;
1579 if (n_disabled & WLFEATURE_DISABLE_11N_STBC_RX)
1580 wlc_stf_stbc_rx_set(wlc, HT_CAP_RX_STBC_NO);
1582 /* apply the GF override from nvram conf */
1583 if (n_disabled & WLFEATURE_DISABLE_11N_GF)
1584 wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_GRN_FLD;
1586 /* initialize radio_mpc_disable according to wlc->mpc */
1587 wlc_radio_mpc_upd(wlc);
1589 if ((wlc->pub->sih->chip) == BCM43235_CHIP_ID) {
1590 if ((getintvar(wlc->pub->vars, "aa2g") == 7) ||
1591 (getintvar(wlc->pub->vars, "aa5g") == 7)) {
1592 wlc_bmac_antsel_set(wlc->hw, 1);
1595 wlc_bmac_antsel_set(wlc->hw, wlc->asi->antsel_avail);
1604 wiphy_err(wl->wiphy, "wl%d: %s: failed with err %d\n",
1605 unit, __func__, err);
1614 static void wlc_attach_antgain_init(struct wlc_info *wlc)
1617 unit = wlc->pub->unit;
1619 if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) {
1620 /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */
1621 wlc->band->antgain = 8;
1622 } else if (wlc->band->antgain == -1) {
1623 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
1624 " srom, using 2dB\n", unit, __func__);
1625 wlc->band->antgain = 8;
1628 /* Older sroms specified gain in whole dbm only. In order
1629 * be able to specify qdbm granularity and remain backward compatible
1630 * the whole dbms are now encoded in only low 6 bits and remaining qdbms
1631 * are encoded in the hi 2 bits. 6 bit signed number ranges from
1632 * -32 - 31. Examples: 0x1 = 1 db,
1633 * 0xc1 = 1.75 db (1 + 3 quarters),
1634 * 0x3f = -1 (-1 + 0 quarters),
1635 * 0x7f = -.75 (-1 in low 6 bits + 1 quarters in hi 2 bits) = -3 qdbm.
1636 * 0xbf = -.50 (-1 in low 6 bits + 2 quarters in hi 2 bits) = -2 qdbm.
1638 gain = wlc->band->antgain & 0x3f;
1639 gain <<= 2; /* Sign extend */
1641 fract = (wlc->band->antgain & 0xc0) >> 6;
1642 wlc->band->antgain = 4 * gain + fract;
1646 static bool wlc_attach_stf_ant_init(struct wlc_info *wlc)
1653 unit = wlc->pub->unit;
1654 vars = wlc->pub->vars;
1655 bandtype = wlc->band->bandtype;
1657 /* get antennas available */
1658 aa = (s8) getintvar(vars, (BAND_5G(bandtype) ? "aa5g" : "aa2g"));
1660 aa = (s8) getintvar(vars,
1661 (BAND_5G(bandtype) ? "aa1" : "aa0"));
1662 if ((aa < 1) || (aa > 15)) {
1663 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
1664 " srom (0x%x), using 3\n", unit, __func__, aa);
1668 /* reset the defaults if we have a single antenna */
1670 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_0;
1671 wlc->stf->txant = ANT_TX_FORCE_0;
1672 } else if (aa == 2) {
1673 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_1;
1674 wlc->stf->txant = ANT_TX_FORCE_1;
1678 /* Compute Antenna Gain */
1679 wlc->band->antgain =
1680 (s8) getintvar(vars, (BAND_5G(bandtype) ? "ag1" : "ag0"));
1681 wlc_attach_antgain_init(wlc);
1687 static void wlc_timers_deinit(struct wlc_info *wlc)
1689 /* free timer state */
1691 brcms_free_timer(wlc->wl, wlc->wdtimer);
1692 wlc->wdtimer = NULL;
1694 if (wlc->radio_timer) {
1695 brcms_free_timer(wlc->wl, wlc->radio_timer);
1696 wlc->radio_timer = NULL;
1700 static void wlc_detach_module(struct wlc_info *wlc)
1703 wlc_antsel_detach(wlc->asi);
1708 wlc_ampdu_detach(wlc->ampdu);
1712 wlc_stf_detach(wlc);
1716 * Return a count of the number of driver callbacks still pending.
1718 * General policy is that wlc_detach can only dealloc/free software states. It can NOT
1719 * touch hardware registers since the d11core may be in reset and clock may not be available.
1720 * One exception is sb register access, which is possible if crystal is turned on
1721 * After "down" state, driver should avoid software timer with the exception of radio_monitor.
1723 uint wlc_detach(struct wlc_info *wlc)
1730 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1732 callbacks += wlc_bmac_detach(wlc);
1734 /* delete software timers */
1735 if (!wlc_radio_monitor_stop(wlc))
1738 wlc_channel_mgr_detach(wlc->cmi);
1740 wlc_timers_deinit(wlc);
1742 wlc_detach_module(wlc);
1745 while (wlc->tx_queues != NULL)
1746 wlc_txq_free(wlc, wlc->tx_queues);
1748 wlc_detach_mfree(wlc);
1752 /* update state that depends on the current value of "ap" */
1753 void wlc_ap_upd(struct wlc_info *wlc)
1755 if (AP_ENAB(wlc->pub))
1756 wlc->PLCPHdr_override = WLC_PLCP_AUTO; /* AP: short not allowed, but not enforced */
1758 wlc->PLCPHdr_override = WLC_PLCP_SHORT; /* STA-BSS; short capable */
1764 /* read hwdisable state and propagate to wlc flag */
1765 static void wlc_radio_hwdisable_upd(struct wlc_info *wlc)
1767 if (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO || wlc->pub->hw_off)
1770 if (wlc_bmac_radio_read_hwdisabled(wlc->hw)) {
1771 mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
1773 mboolclr(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
1777 /* return true if Minimum Power Consumption should be entered, false otherwise */
1778 bool wlc_is_non_delay_mpc(struct wlc_info *wlc)
1783 bool wlc_ismpc(struct wlc_info *wlc)
1785 return (wlc->mpc_delay_off == 0) && (wlc_is_non_delay_mpc(wlc));
1788 void wlc_radio_mpc_upd(struct wlc_info *wlc)
1790 bool mpc_radio, radio_state;
1793 * Clear the WL_RADIO_MPC_DISABLE bit when mpc feature is disabled
1794 * in case the WL_RADIO_MPC_DISABLE bit was set. Stop the radio
1795 * monitor also when WL_RADIO_MPC_DISABLE is the only reason that
1796 * the radio is going down.
1799 if (!wlc->pub->radio_disabled)
1801 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
1803 if (!wlc->pub->radio_disabled)
1804 wlc_radio_monitor_stop(wlc);
1809 * sync ismpc logic with WL_RADIO_MPC_DISABLE bit in wlc->pub->radio_disabled
1810 * to go ON, always call radio_upd synchronously
1811 * to go OFF, postpone radio_upd to later when context is safe(e.g. watchdog)
1814 (mboolisset(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE) ? OFF :
1816 mpc_radio = (wlc_ismpc(wlc) == true) ? OFF : ON;
1818 if (radio_state == ON && mpc_radio == OFF)
1819 wlc->mpc_delay_off = wlc->mpc_dlycnt;
1820 else if (radio_state == OFF && mpc_radio == ON) {
1821 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
1823 if (wlc->mpc_offcnt < WLC_MPC_THRESHOLD) {
1824 wlc->mpc_dlycnt = WLC_MPC_MAX_DELAYCNT;
1826 wlc->mpc_dlycnt = WLC_MPC_MIN_DELAYCNT;
1827 wlc->mpc_dur += OSL_SYSUPTIME() - wlc->mpc_laston_ts;
1829 /* Below logic is meant to capture the transition from mpc off to mpc on for reasons
1830 * other than wlc->mpc_delay_off keeping the mpc off. In that case reset
1831 * wlc->mpc_delay_off to wlc->mpc_dlycnt, so that we restart the countdown of mpc_delay_off
1833 if ((wlc->prev_non_delay_mpc == false) &&
1834 (wlc_is_non_delay_mpc(wlc) == true) && wlc->mpc_delay_off) {
1835 wlc->mpc_delay_off = wlc->mpc_dlycnt;
1837 wlc->prev_non_delay_mpc = wlc_is_non_delay_mpc(wlc);
1841 * centralized radio disable/enable function,
1842 * invoke radio enable/disable after updating hwradio status
1844 static void wlc_radio_upd(struct wlc_info *wlc)
1846 if (wlc->pub->radio_disabled) {
1847 wlc_radio_disable(wlc);
1849 wlc_radio_enable(wlc);
1853 /* maintain LED behavior in down state */
1854 static void wlc_down_led_upd(struct wlc_info *wlc)
1856 /* maintain LEDs while in down state, turn on sbclk if not available yet */
1857 /* turn on sbclk if necessary */
1858 if (!AP_ENAB(wlc->pub)) {
1859 wlc_pllreq(wlc, true, WLC_PLLREQ_FLIP);
1861 wlc_pllreq(wlc, false, WLC_PLLREQ_FLIP);
1865 /* update hwradio status and return it */
1866 bool wlc_check_radio_disabled(struct wlc_info *wlc)
1868 wlc_radio_hwdisable_upd(wlc);
1870 return mboolisset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE) ? true : false;
1873 void wlc_radio_disable(struct wlc_info *wlc)
1875 if (!wlc->pub->up) {
1876 wlc_down_led_upd(wlc);
1880 wlc_radio_monitor_start(wlc);
1881 brcms_down(wlc->wl);
1884 static void wlc_radio_enable(struct wlc_info *wlc)
1889 if (DEVICEREMOVED(wlc))
1895 /* periodical query hw radio button while driver is "down" */
1896 static void wlc_radio_timer(void *arg)
1898 struct wlc_info *wlc = (struct wlc_info *) arg;
1900 if (DEVICEREMOVED(wlc)) {
1901 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
1903 brcms_down(wlc->wl);
1907 /* cap mpc off count */
1908 if (wlc->mpc_offcnt < WLC_MPC_MAX_DELAYCNT)
1911 wlc_radio_hwdisable_upd(wlc);
1915 static bool wlc_radio_monitor_start(struct wlc_info *wlc)
1917 /* Don't start the timer if HWRADIO feature is disabled */
1918 if (wlc->radio_monitor || (wlc->pub->wlfeatureflag & WL_SWFL_NOHWRADIO))
1921 wlc->radio_monitor = true;
1922 wlc_pllreq(wlc, true, WLC_PLLREQ_RADIO_MON);
1923 brcms_add_timer(wlc->wl, wlc->radio_timer, TIMER_INTERVAL_RADIOCHK,
1928 bool wlc_radio_monitor_stop(struct wlc_info *wlc)
1930 if (!wlc->radio_monitor)
1933 wlc->radio_monitor = false;
1934 wlc_pllreq(wlc, false, WLC_PLLREQ_RADIO_MON);
1935 return brcms_del_timer(wlc->wl, wlc->radio_timer);
1938 static void wlc_watchdog_by_timer(void *arg)
1943 /* common watchdog code */
1944 static void wlc_watchdog(void *arg)
1946 struct wlc_info *wlc = (struct wlc_info *) arg;
1948 struct wlc_bsscfg *cfg;
1950 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1955 if (DEVICEREMOVED(wlc)) {
1956 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
1958 brcms_down(wlc->wl);
1962 /* increment second count */
1965 /* delay radio disable */
1966 if (wlc->mpc_delay_off) {
1967 if (--wlc->mpc_delay_off == 0) {
1968 mboolset(wlc->pub->radio_disabled,
1969 WL_RADIO_MPC_DISABLE);
1970 if (wlc->mpc && wlc_ismpc(wlc))
1971 wlc->mpc_offcnt = 0;
1972 wlc->mpc_laston_ts = OSL_SYSUPTIME();
1977 wlc_radio_mpc_upd(wlc);
1978 /* radio sync: sw/hw/mpc --> radio_disable/radio_enable */
1979 wlc_radio_hwdisable_upd(wlc);
1981 /* if radio is disable, driver may be down, quit here */
1982 if (wlc->pub->radio_disabled)
1985 wlc_bmac_watchdog(wlc);
1987 /* occasionally sample mac stat counters to detect 16-bit counter wrap */
1988 if ((wlc->pub->now % SW_TIMER_MAC_STAT_UPD) == 0)
1991 /* Manage TKIP countermeasures timers */
1992 FOREACH_BSS(wlc, i, cfg) {
1993 if (cfg->tk_cm_dt) {
1996 if (cfg->tk_cm_bt) {
2001 /* Call any registered watchdog handlers */
2002 for (i = 0; i < WLC_MAXMODULES; i++) {
2003 if (wlc->modulecb[i].watchdog_fn)
2004 wlc->modulecb[i].watchdog_fn(wlc->modulecb[i].hdl);
2007 if (WLCISNPHY(wlc->band) && !wlc->pub->tempsense_disable &&
2008 ((wlc->pub->now - wlc->tempsense_lasttime) >=
2009 WLC_TEMPSENSE_PERIOD)) {
2010 wlc->tempsense_lasttime = wlc->pub->now;
2011 wlc_tempsense_upd(wlc);
2015 /* make interface operational */
2016 int wlc_up(struct wlc_info *wlc)
2018 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
2020 /* HW is turned off so don't try to access it */
2021 if (wlc->pub->hw_off || DEVICEREMOVED(wlc))
2024 if (!wlc->pub->hw_up) {
2025 wlc_bmac_hw_up(wlc->hw);
2026 wlc->pub->hw_up = true;
2029 if ((wlc->pub->boardflags & BFL_FEM)
2030 && (wlc->pub->sih->chip == BCM4313_CHIP_ID)) {
2031 if (wlc->pub->boardrev >= 0x1250
2032 && (wlc->pub->boardflags & BFL_FEM_BT)) {
2033 wlc_mhf(wlc, MHF5, MHF5_4313_GPIOCTRL,
2034 MHF5_4313_GPIOCTRL, WLC_BAND_ALL);
2036 wlc_mhf(wlc, MHF4, MHF4_EXTPA_ENABLE, MHF4_EXTPA_ENABLE,
2042 * Need to read the hwradio status here to cover the case where the system
2043 * is loaded with the hw radio disabled. We do not want to bring the driver up in this case.
2044 * if radio is disabled, abort up, lower power, start radio timer and return 0(for NDIS)
2045 * don't call radio_update to avoid looping wlc_up.
2047 * wlc_bmac_up_prep() returns either 0 or -BCME_RADIOOFF only
2049 if (!wlc->pub->radio_disabled) {
2050 int status = wlc_bmac_up_prep(wlc->hw);
2051 if (status == -ENOMEDIUM) {
2053 (wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE)) {
2055 struct wlc_bsscfg *bsscfg;
2056 mboolset(wlc->pub->radio_disabled,
2057 WL_RADIO_HW_DISABLE);
2059 FOREACH_BSS(wlc, idx, bsscfg) {
2060 if (!BSSCFG_STA(bsscfg)
2061 || !bsscfg->enable || !bsscfg->BSS)
2063 wiphy_err(wlc->wiphy, "wl%d.%d: wlc_up"
2065 "wlc_bsscfg_disable()\n",
2066 wlc->pub->unit, idx);
2072 if (wlc->pub->radio_disabled) {
2073 wlc_radio_monitor_start(wlc);
2077 /* wlc_bmac_up_prep has done wlc_corereset(). so clk is on, set it */
2080 wlc_radio_monitor_stop(wlc);
2082 /* Set EDCF hostflags */
2083 if (EDCF_ENAB(wlc->pub)) {
2084 wlc_mhf(wlc, MHF1, MHF1_EDCF, MHF1_EDCF, WLC_BAND_ALL);
2086 wlc_mhf(wlc, MHF1, MHF1_EDCF, 0, WLC_BAND_ALL);
2089 if (WLC_WAR16165(wlc))
2090 wlc_mhf(wlc, MHF2, MHF2_PCISLOWCLKWAR, MHF2_PCISLOWCLKWAR,
2093 brcms_init(wlc->wl);
2094 wlc->pub->up = true;
2096 if (wlc->bandinit_pending) {
2097 wlc_suspend_mac_and_wait(wlc);
2098 wlc_set_chanspec(wlc, wlc->default_bss->chanspec);
2099 wlc->bandinit_pending = false;
2100 wlc_enable_mac(wlc);
2103 wlc_bmac_up_finish(wlc->hw);
2105 /* other software states up after ISR is running */
2106 /* start APs that were to be brought up but are not up yet */
2107 /* if (AP_ENAB(wlc->pub)) wlc_restart_ap(wlc->ap); */
2109 /* Program the TX wme params with the current settings */
2110 wlc_wme_retries_write(wlc);
2112 /* start one second watchdog timer */
2113 brcms_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG, true);
2114 wlc->WDarmed = true;
2116 /* ensure antenna config is up to date */
2117 wlc_stf_phy_txant_upd(wlc);
2118 /* ensure LDPC config is in sync */
2119 wlc_ht_update_ldpc(wlc, wlc->stf->ldpc);
2124 /* Initialize the base precedence map for dequeueing from txq based on WME settings */
2125 static void wlc_tx_prec_map_init(struct wlc_info *wlc)
2127 wlc->tx_prec_map = WLC_PREC_BMP_ALL;
2128 memset(wlc->fifo2prec_map, 0, NFIFO * sizeof(u16));
2130 /* For non-WME, both fifos have overlapping MAXPRIO. So just disable all precedences
2131 * if either is full.
2133 if (!EDCF_ENAB(wlc->pub)) {
2134 wlc->fifo2prec_map[TX_DATA_FIFO] = WLC_PREC_BMP_ALL;
2135 wlc->fifo2prec_map[TX_CTL_FIFO] = WLC_PREC_BMP_ALL;
2137 wlc->fifo2prec_map[TX_AC_BK_FIFO] = WLC_PREC_BMP_AC_BK;
2138 wlc->fifo2prec_map[TX_AC_BE_FIFO] = WLC_PREC_BMP_AC_BE;
2139 wlc->fifo2prec_map[TX_AC_VI_FIFO] = WLC_PREC_BMP_AC_VI;
2140 wlc->fifo2prec_map[TX_AC_VO_FIFO] = WLC_PREC_BMP_AC_VO;
2144 static uint wlc_down_del_timer(struct wlc_info *wlc)
2152 * Mark the interface nonoperational, stop the software mechanisms,
2153 * disable the hardware, free any transient buffer state.
2154 * Return a count of the number of driver callbacks still pending.
2156 uint wlc_down(struct wlc_info *wlc)
2161 bool dev_gone = false;
2162 struct wlc_txq_info *qi;
2164 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
2166 /* check if we are already in the going down path */
2167 if (wlc->going_down) {
2168 wiphy_err(wlc->wiphy, "wl%d: %s: Driver going down so return"
2169 "\n", wlc->pub->unit, __func__);
2175 /* in between, mpc could try to bring down again.. */
2176 wlc->going_down = true;
2178 callbacks += wlc_bmac_down_prep(wlc->hw);
2180 dev_gone = DEVICEREMOVED(wlc);
2182 /* Call any registered down handlers */
2183 for (i = 0; i < WLC_MAXMODULES; i++) {
2184 if (wlc->modulecb[i].down_fn)
2186 wlc->modulecb[i].down_fn(wlc->modulecb[i].hdl);
2189 /* cancel the watchdog timer */
2191 if (!brcms_del_timer(wlc->wl, wlc->wdtimer))
2193 wlc->WDarmed = false;
2195 /* cancel all other timers */
2196 callbacks += wlc_down_del_timer(wlc);
2198 wlc->pub->up = false;
2200 wlc_phy_mute_upd(wlc->band->pi, false, PHY_MUTE_ALL);
2202 /* clear txq flow control */
2203 wlc_txflowcontrol_reset(wlc);
2205 /* flush tx queues */
2206 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
2207 brcmu_pktq_flush(&qi->q, true, NULL, NULL);
2210 callbacks += wlc_bmac_down_finish(wlc->hw);
2212 /* wlc_bmac_down_finish has done wlc_coredisable(). so clk is off */
2215 wlc->going_down = false;
2219 /* Set the current gmode configuration */
2220 int wlc_set_gmode(struct wlc_info *wlc, u8 gmode, bool config)
2225 /* Default to 54g Auto */
2226 s8 shortslot = WLC_SHORTSLOT_AUTO; /* Advertise and use shortslot (-1/0/1 Auto/Off/On) */
2227 bool shortslot_restrict = false; /* Restrict association to stations that support shortslot
2229 bool ofdm_basic = false; /* Make 6, 12, and 24 basic rates */
2230 int preamble = WLC_PLCP_LONG; /* Advertise and use short preambles (-1/0/1 Auto/Off/On) */
2231 bool preamble_restrict = false; /* Restrict association to stations that support short
2234 struct wlcband *band;
2236 /* if N-support is enabled, allow Gmode set as long as requested
2237 * Gmode is not GMODE_LEGACY_B
2239 if (N_ENAB(wlc->pub) && gmode == GMODE_LEGACY_B)
2242 /* verify that we are dealing with 2G band and grab the band pointer */
2243 if (wlc->band->bandtype == WLC_BAND_2G)
2245 else if ((NBANDS(wlc) > 1) &&
2246 (wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype == WLC_BAND_2G))
2247 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
2251 /* Legacy or bust when no OFDM is supported by regulatory */
2252 if ((wlc_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
2253 WLC_NO_OFDM) && (gmode != GMODE_LEGACY_B))
2256 /* update configuration value */
2258 wlc_protection_upd(wlc, WLC_PROT_G_USER, gmode);
2260 /* Clear supported rates filter */
2261 memset(&wlc->sup_rates_override, 0, sizeof(wlc_rateset_t));
2263 /* Clear rateset override */
2264 memset(&rs, 0, sizeof(wlc_rateset_t));
2267 case GMODE_LEGACY_B:
2268 shortslot = WLC_SHORTSLOT_OFF;
2269 wlc_rateset_copy(&gphy_legacy_rates, &rs);
2274 if (AP_ENAB(wlc->pub))
2275 wlc_rateset_copy(&cck_rates, &wlc->sup_rates_override);
2279 /* Accept defaults */
2284 preamble = WLC_PLCP_SHORT;
2285 preamble_restrict = true;
2288 case GMODE_PERFORMANCE:
2289 if (AP_ENAB(wlc->pub)) /* Put all rates into the Supported Rates element */
2290 wlc_rateset_copy(&cck_ofdm_rates,
2291 &wlc->sup_rates_override);
2293 shortslot = WLC_SHORTSLOT_ON;
2294 shortslot_restrict = true;
2296 preamble = WLC_PLCP_SHORT;
2297 preamble_restrict = true;
2302 wiphy_err(wlc->wiphy, "wl%d: %s: invalid gmode %d\n",
2303 wlc->pub->unit, __func__, gmode);
2308 * If we are switching to gmode == GMODE_LEGACY_B,
2309 * clean up rate info that may refer to OFDM rates.
2311 if ((gmode == GMODE_LEGACY_B) && (band->gmode != GMODE_LEGACY_B)) {
2312 band->gmode = gmode;
2313 if (band->rspec_override && !IS_CCK(band->rspec_override)) {
2314 band->rspec_override = 0;
2315 wlc_reprate_init(wlc);
2317 if (band->mrspec_override && !IS_CCK(band->mrspec_override)) {
2318 band->mrspec_override = 0;
2322 band->gmode = gmode;
2324 wlc->shortslot_override = shortslot;
2326 if (AP_ENAB(wlc->pub)) {
2327 /* wlc->ap->shortslot_restrict = shortslot_restrict; */
2328 wlc->PLCPHdr_override =
2330 WLC_PLCP_LONG) ? WLC_PLCP_SHORT : WLC_PLCP_AUTO;
2333 if ((AP_ENAB(wlc->pub) && preamble != WLC_PLCP_LONG)
2334 || preamble == WLC_PLCP_SHORT)
2335 wlc->default_bss->capability |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2337 wlc->default_bss->capability &= ~WLAN_CAPABILITY_SHORT_PREAMBLE;
2339 /* Update shortslot capability bit for AP and IBSS */
2340 if ((AP_ENAB(wlc->pub) && shortslot == WLC_SHORTSLOT_AUTO) ||
2341 shortslot == WLC_SHORTSLOT_ON)
2342 wlc->default_bss->capability |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2344 wlc->default_bss->capability &=
2345 ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
2347 /* Use the default 11g rateset */
2349 wlc_rateset_copy(&cck_ofdm_rates, &rs);
2352 for (i = 0; i < rs.count; i++) {
2353 if (rs.rates[i] == WLC_RATE_6M
2354 || rs.rates[i] == WLC_RATE_12M
2355 || rs.rates[i] == WLC_RATE_24M)
2356 rs.rates[i] |= WLC_RATE_FLAG;
2360 /* Set default bss rateset */
2361 wlc->default_bss->rateset.count = rs.count;
2362 memcpy(wlc->default_bss->rateset.rates, rs.rates,
2363 sizeof(wlc->default_bss->rateset.rates));
2368 static int wlc_nmode_validate(struct wlc_info *wlc, s32 nmode)
2380 if (!(WLC_PHY_11N_CAP(wlc->band)))
2392 int wlc_set_nmode(struct wlc_info *wlc, s32 nmode)
2397 err = wlc_nmode_validate(wlc, nmode);
2403 wlc->pub->_n_enab = OFF;
2404 wlc->default_bss->flags &= ~WLC_BSS_HT;
2405 /* delete the mcs rates from the default and hw ratesets */
2406 wlc_rateset_mcs_clear(&wlc->default_bss->rateset);
2407 for (i = 0; i < NBANDS(wlc); i++) {
2408 memset(wlc->bandstate[i]->hw_rateset.mcs, 0,
2410 if (IS_MCS(wlc->band->rspec_override)) {
2411 wlc->bandstate[i]->rspec_override = 0;
2412 wlc_reprate_init(wlc);
2414 if (IS_MCS(wlc->band->mrspec_override))
2415 wlc->bandstate[i]->mrspec_override = 0;
2420 if (wlc->stf->txstreams == WL_11N_3x3)
2426 /* force GMODE_AUTO if NMODE is ON */
2427 wlc_set_gmode(wlc, GMODE_AUTO, true);
2428 if (nmode == WL_11N_3x3)
2429 wlc->pub->_n_enab = SUPPORT_HT;
2431 wlc->pub->_n_enab = SUPPORT_11N;
2432 wlc->default_bss->flags |= WLC_BSS_HT;
2433 /* add the mcs rates to the default and hw ratesets */
2434 wlc_rateset_mcs_build(&wlc->default_bss->rateset,
2435 wlc->stf->txstreams);
2436 for (i = 0; i < NBANDS(wlc); i++)
2437 memcpy(wlc->bandstate[i]->hw_rateset.mcs,
2438 wlc->default_bss->rateset.mcs, MCSSET_LEN);
2448 static int wlc_set_rateset(struct wlc_info *wlc, wlc_rateset_t *rs_arg)
2450 wlc_rateset_t rs, new;
2453 memcpy(&rs, rs_arg, sizeof(wlc_rateset_t));
2455 /* check for bad count value */
2456 if ((rs.count == 0) || (rs.count > WLC_NUMRATES))
2459 /* try the current band */
2460 bandunit = wlc->band->bandunit;
2461 memcpy(&new, &rs, sizeof(wlc_rateset_t));
2462 if (wlc_rate_hwrs_filter_sort_validate
2463 (&new, &wlc->bandstate[bandunit]->hw_rateset, true,
2464 wlc->stf->txstreams))
2467 /* try the other band */
2468 if (IS_MBAND_UNLOCKED(wlc)) {
2469 bandunit = OTHERBANDUNIT(wlc);
2470 memcpy(&new, &rs, sizeof(wlc_rateset_t));
2471 if (wlc_rate_hwrs_filter_sort_validate(&new,
2473 bandstate[bandunit]->
2475 wlc->stf->txstreams))
2482 /* apply new rateset */
2483 memcpy(&wlc->default_bss->rateset, &new, sizeof(wlc_rateset_t));
2484 memcpy(&wlc->bandstate[bandunit]->defrateset, &new,
2485 sizeof(wlc_rateset_t));
2489 /* simplified integer set interface for common ioctl handler */
2490 int wlc_set(struct wlc_info *wlc, int cmd, int arg)
2492 return wlc_ioctl(wlc, cmd, (void *)&arg, sizeof(arg), NULL);
2495 /* simplified integer get interface for common ioctl handler */
2496 int wlc_get(struct wlc_info *wlc, int cmd, int *arg)
2498 return wlc_ioctl(wlc, cmd, arg, sizeof(int), NULL);
2501 static void wlc_ofdm_rateset_war(struct wlc_info *wlc)
2506 if (wlc->cfg->associated)
2507 r = wlc->cfg->current_bss->rateset.rates[0];
2509 r = wlc->default_bss->rateset.rates[0];
2511 wlc_phy_ofdm_rateset_war(wlc->band->pi, war);
2517 wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
2518 struct wlc_if *wlcif)
2520 return _wlc_ioctl(wlc, cmd, arg, len, wlcif);
2523 /* common ioctl handler. return: 0=ok, -1=error, positive=particular error */
2525 _wlc_ioctl(struct wlc_info *wlc, int cmd, void *arg, int len,
2526 struct wlc_if *wlcif)
2532 struct scb *nextscb;
2535 struct wlc_bsscfg *bsscfg;
2536 wlc_bss_info_t *current_bss;
2538 /* update bsscfg pointer */
2540 current_bss = bsscfg->current_bss;
2542 /* initialize the following to get rid of compiler warning */
2547 /* If the device is turned off, then it's not "removed" */
2548 if (!wlc->pub->hw_off && DEVICEREMOVED(wlc)) {
2549 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
2551 brcms_down(wlc->wl);
2555 /* default argument is generic integer */
2556 pval = arg ? (int *)arg:NULL;
2558 /* This will prevent the misaligned access */
2559 if (pval && (u32) len >= sizeof(val))
2560 memcpy(&val, pval, sizeof(val));
2564 /* bool conversion to avoid duplication below */
2565 bool_val = val != 0;
2569 if ((arg == NULL) || (len <= 0)) {
2570 wiphy_err(wlc->wiphy, "wl%d: %s: Command %d needs arguments\n",
2571 wlc->pub->unit, __func__, cmd);
2578 case WLC_SET_CHANNEL:{
2579 chanspec_t chspec = CH20MHZ_CHSPEC(val);
2581 if (val < 0 || val > MAXCHANNEL) {
2586 if (!wlc_valid_chanspec_db(wlc->cmi, chspec)) {
2591 if (!wlc->pub->up && IS_MBAND_UNLOCKED(wlc)) {
2592 if (wlc->band->bandunit !=
2593 CHSPEC_WLCBANDUNIT(chspec))
2594 wlc->bandinit_pending = true;
2596 wlc->bandinit_pending = false;
2599 wlc->default_bss->chanspec = chspec;
2600 /* wlc_BSSinit() will sanitize the rateset before using it.. */
2602 (WLC_BAND_PI_RADIO_CHANSPEC != chspec)) {
2603 wlc_set_home_chanspec(wlc, chspec);
2604 wlc_suspend_mac_and_wait(wlc);
2605 wlc_set_chanspec(wlc, chspec);
2606 wlc_enable_mac(wlc);
2612 if (val >= 1 && val <= RETRY_SHORT_MAX) {
2614 wlc->SRL = (u16) val;
2616 wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
2618 for (ac = 0; ac < AC_COUNT; ac++) {
2619 WLC_WME_RETRY_SHORT_SET(wlc, ac, wlc->SRL);
2621 wlc_wme_retries_write(wlc);
2627 if (val >= 1 && val <= 255) {
2629 wlc->LRL = (u16) val;
2631 wlc_bmac_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
2633 for (ac = 0; ac < AC_COUNT; ac++) {
2634 WLC_WME_RETRY_LONG_SET(wlc, ac, wlc->LRL);
2636 wlc_wme_retries_write(wlc);
2641 case WLC_GET_CURR_RATESET:{
2642 wl_rateset_t *ret_rs = (wl_rateset_t *) arg;
2645 if (wlc->pub->associated)
2646 rs = ¤t_bss->rateset;
2648 rs = &wlc->default_bss->rateset;
2650 if (len < (int)(rs->count + sizeof(rs->count))) {
2651 bcmerror = -EOVERFLOW;
2655 /* Copy only legacy rateset section */
2656 ret_rs->count = rs->count;
2657 memcpy(&ret_rs->rates, &rs->rates, rs->count);
2661 case WLC_SET_RATESET:{
2663 wl_rateset_t *in_rs = (wl_rateset_t *) arg;
2665 if (len < (int)(in_rs->count + sizeof(in_rs->count))) {
2666 bcmerror = -EOVERFLOW;
2670 if (in_rs->count > WLC_NUMRATES) {
2671 bcmerror = -ENOBUFS;
2675 memset(&rs, 0, sizeof(wlc_rateset_t));
2677 /* Copy only legacy rateset section */
2678 rs.count = in_rs->count;
2679 memcpy(&rs.rates, &in_rs->rates, rs.count);
2681 /* merge rateset coming in with the current mcsset */
2682 if (N_ENAB(wlc->pub)) {
2683 if (bsscfg->associated)
2685 ¤t_bss->rateset.mcs[0],
2689 &wlc->default_bss->rateset.mcs[0],
2693 bcmerror = wlc_set_rateset(wlc, &rs);
2696 wlc_ofdm_rateset_war(wlc);
2701 case WLC_SET_BCNPRD:
2702 /* range [1, 0xffff] */
2703 if (val >= DOT11_MIN_BEACON_PERIOD
2704 && val <= DOT11_MAX_BEACON_PERIOD) {
2705 wlc->default_bss->beacon_period = (u16) val;
2710 case WLC_GET_PHYLIST:
2712 unsigned char *cp = arg;
2714 bcmerror = -EOVERFLOW;
2718 if (WLCISNPHY(wlc->band)) {
2720 } else if (WLCISLCNPHY(wlc->band)) {
2722 } else if (WLCISSSLPNPHY(wlc->band)) {
2729 case WLC_SET_SHORTSLOT_OVERRIDE:
2730 if ((val != WLC_SHORTSLOT_AUTO) &&
2731 (val != WLC_SHORTSLOT_OFF) && (val != WLC_SHORTSLOT_ON)) {
2736 wlc->shortslot_override = (s8) val;
2738 /* shortslot is an 11g feature, so no more work if we are
2739 * currently on the 5G band
2741 if (BAND_5G(wlc->band->bandtype))
2744 if (wlc->pub->up && wlc->pub->associated) {
2745 /* let watchdog or beacon processing update shortslot */
2746 } else if (wlc->pub->up) {
2747 /* unassociated shortslot is off */
2748 wlc_switch_shortslot(wlc, false);
2750 /* driver is down, so just update the wlc_info value */
2751 if (wlc->shortslot_override == WLC_SHORTSLOT_AUTO) {
2752 wlc->shortslot = false;
2755 (wlc->shortslot_override ==
2766 wlc->pub->bcmerror = bcmerror;
2772 * register watchdog and down handlers.
2774 int wlc_module_register(struct wlc_pub *pub,
2775 const char *name, void *hdl,
2776 watchdog_fn_t w_fn, down_fn_t d_fn)
2778 struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
2781 /* find an empty entry and just add, no duplication check! */
2782 for (i = 0; i < WLC_MAXMODULES; i++) {
2783 if (wlc->modulecb[i].name[0] == '\0') {
2784 strncpy(wlc->modulecb[i].name, name,
2785 sizeof(wlc->modulecb[i].name) - 1);
2786 wlc->modulecb[i].hdl = hdl;
2787 wlc->modulecb[i].watchdog_fn = w_fn;
2788 wlc->modulecb[i].down_fn = d_fn;
2796 /* unregister module callbacks */
2797 int wlc_module_unregister(struct wlc_pub *pub, const char *name, void *hdl)
2799 struct wlc_info *wlc = (struct wlc_info *) pub->wlc;
2805 for (i = 0; i < WLC_MAXMODULES; i++) {
2806 if (!strcmp(wlc->modulecb[i].name, name) &&
2807 (wlc->modulecb[i].hdl == hdl)) {
2808 memset(&wlc->modulecb[i], 0, sizeof(struct modulecb));
2813 /* table not found! */
2817 /* Write WME tunable parameters for retransmit/max rate from wlc struct to ucode */
2818 static void wlc_wme_retries_write(struct wlc_info *wlc)
2822 /* Need clock to do this */
2826 for (ac = 0; ac < AC_COUNT; ac++) {
2827 wlc_write_shm(wlc, M_AC_TXLMT_ADDR(ac), wlc->wme_retries[ac]);
2832 static const char *supr_reason[] = {
2833 "None", "PMQ Entry", "Flush request",
2834 "Previous frag failure", "Channel mismatch",
2835 "Lifetime Expiry", "Underflow"
2838 static void wlc_print_txs_status(u16 s)
2840 printk(KERN_DEBUG "[15:12] %d frame attempts\n",
2841 (s & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT);
2842 printk(KERN_DEBUG " [11:8] %d rts attempts\n",
2843 (s & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT);
2844 printk(KERN_DEBUG " [7] %d PM mode indicated\n",
2845 ((s & TX_STATUS_PMINDCTD) ? 1 : 0));
2846 printk(KERN_DEBUG " [6] %d intermediate status\n",
2847 ((s & TX_STATUS_INTERMEDIATE) ? 1 : 0));
2848 printk(KERN_DEBUG " [5] %d AMPDU\n",
2849 (s & TX_STATUS_AMPDU) ? 1 : 0);
2850 printk(KERN_DEBUG " [4:2] %d Frame Suppressed Reason (%s)\n",
2851 ((s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT),
2852 supr_reason[(s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT]);
2853 printk(KERN_DEBUG " [1] %d acked\n",
2854 ((s & TX_STATUS_ACK_RCV) ? 1 : 0));
2858 void wlc_print_txstatus(tx_status_t *txs)
2861 u16 s = txs->status;
2862 u16 ackphyrxsh = txs->ackphyrxsh;
2864 printk(KERN_DEBUG "\ntxpkt (MPDU) Complete\n");
2866 printk(KERN_DEBUG "FrameID: %04x ", txs->frameid);
2867 printk(KERN_DEBUG "TxStatus: %04x", s);
2868 printk(KERN_DEBUG "\n");
2870 wlc_print_txs_status(s);
2872 printk(KERN_DEBUG "LastTxTime: %04x ", txs->lasttxtime);
2873 printk(KERN_DEBUG "Seq: %04x ", txs->sequence);
2874 printk(KERN_DEBUG "PHYTxStatus: %04x ", txs->phyerr);
2875 printk(KERN_DEBUG "RxAckRSSI: %04x ",
2876 (ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT);
2877 printk(KERN_DEBUG "RxAckSQ: %04x",
2878 (ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
2879 printk(KERN_DEBUG "\n");
2880 #endif /* defined(BCMDBG) */
2883 void wlc_statsupd(struct wlc_info *wlc)
2893 /* if driver down, make no sense to update stats */
2898 /* save last rx fifo 0 overflow count */
2899 rxf0ovfl = wlc->core->macstat_snapshot->rxf0ovfl;
2901 /* save last tx fifo underflow count */
2902 for (i = 0; i < NFIFO; i++)
2903 txfunfl[i] = wlc->core->macstat_snapshot->txfunfl[i];
2906 /* Read mac stats from contiguous shared memory */
2907 wlc_bmac_copyfrom_shm(wlc->hw, M_UCODE_MACSTAT,
2908 &macstats, sizeof(macstat_t));
2911 /* check for rx fifo 0 overflow */
2912 delta = (u16) (wlc->core->macstat_snapshot->rxf0ovfl - rxf0ovfl);
2914 wiphy_err(wlc->wiphy, "wl%d: %u rx fifo 0 overflows!\n",
2915 wlc->pub->unit, delta);
2917 /* check for tx fifo underflows */
2918 for (i = 0; i < NFIFO; i++) {
2920 (u16) (wlc->core->macstat_snapshot->txfunfl[i] -
2923 wiphy_err(wlc->wiphy, "wl%d: %u tx fifo %d underflows!"
2924 "\n", wlc->pub->unit, delta, i);
2928 /* merge counters from dma module */
2929 for (i = 0; i < NFIFO; i++) {
2930 if (wlc->hw->di[i]) {
2931 dma_counterreset(wlc->hw->di[i]);
2936 bool wlc_chipmatch(u16 vendor, u16 device)
2938 if (vendor != PCI_VENDOR_ID_BROADCOM) {
2939 pr_err("wlc_chipmatch: unknown vendor id %04x\n", vendor);
2943 if (device == BCM43224_D11N_ID_VEN1)
2945 if ((device == BCM43224_D11N_ID) || (device == BCM43225_D11N2G_ID))
2947 if (device == BCM4313_D11N2G_ID)
2949 if ((device == BCM43236_D11N_ID) || (device == BCM43236_D11N2G_ID))
2952 pr_err("wlc_chipmatch: unknown device id %04x\n", device);
2957 void wlc_print_txdesc(d11txh_t *txh)
2959 u16 mtcl = le16_to_cpu(txh->MacTxControlLow);
2960 u16 mtch = le16_to_cpu(txh->MacTxControlHigh);
2961 u16 mfc = le16_to_cpu(txh->MacFrameControl);
2962 u16 tfest = le16_to_cpu(txh->TxFesTimeNormal);
2963 u16 ptcw = le16_to_cpu(txh->PhyTxControlWord);
2964 u16 ptcw_1 = le16_to_cpu(txh->PhyTxControlWord_1);
2965 u16 ptcw_1_Fbr = le16_to_cpu(txh->PhyTxControlWord_1_Fbr);
2966 u16 ptcw_1_Rts = le16_to_cpu(txh->PhyTxControlWord_1_Rts);
2967 u16 ptcw_1_FbrRts = le16_to_cpu(txh->PhyTxControlWord_1_FbrRts);
2968 u16 mainrates = le16_to_cpu(txh->MainRates);
2969 u16 xtraft = le16_to_cpu(txh->XtraFrameTypes);
2971 u8 *ra = txh->TxFrameRA;
2972 u16 tfestfb = le16_to_cpu(txh->TxFesTimeFallback);
2973 u8 *rtspfb = txh->RTSPLCPFallback;
2974 u16 rtsdfb = le16_to_cpu(txh->RTSDurFallback);
2975 u8 *fragpfb = txh->FragPLCPFallback;
2976 u16 fragdfb = le16_to_cpu(txh->FragDurFallback);
2977 u16 mmodelen = le16_to_cpu(txh->MModeLen);
2978 u16 mmodefbrlen = le16_to_cpu(txh->MModeFbrLen);
2979 u16 tfid = le16_to_cpu(txh->TxFrameID);
2980 u16 txs = le16_to_cpu(txh->TxStatus);
2981 u16 mnmpdu = le16_to_cpu(txh->MaxNMpdus);
2982 u16 mabyte = le16_to_cpu(txh->MaxABytes_MRT);
2983 u16 mabyte_f = le16_to_cpu(txh->MaxABytes_FBR);
2984 u16 mmbyte = le16_to_cpu(txh->MinMBytes);
2986 u8 *rtsph = txh->RTSPhyHeader;
2987 struct ieee80211_rts rts = txh->rts_frame;
2990 /* add plcp header along with txh descriptor */
2991 printk(KERN_DEBUG "Raw TxDesc + plcp header:\n");
2992 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
2993 txh, sizeof(d11txh_t) + 48);
2995 printk(KERN_DEBUG "TxCtlLow: %04x ", mtcl);
2996 printk(KERN_DEBUG "TxCtlHigh: %04x ", mtch);
2997 printk(KERN_DEBUG "FC: %04x ", mfc);
2998 printk(KERN_DEBUG "FES Time: %04x\n", tfest);
2999 printk(KERN_DEBUG "PhyCtl: %04x%s ", ptcw,
3000 (ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
3001 printk(KERN_DEBUG "PhyCtl_1: %04x ", ptcw_1);
3002 printk(KERN_DEBUG "PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
3003 printk(KERN_DEBUG "PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
3004 printk(KERN_DEBUG "PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
3005 printk(KERN_DEBUG "MainRates: %04x ", mainrates);
3006 printk(KERN_DEBUG "XtraFrameTypes: %04x ", xtraft);
3007 printk(KERN_DEBUG "\n");
3009 brcmu_format_hex(hexbuf, iv, sizeof(txh->IV));
3010 printk(KERN_DEBUG "SecIV: %s\n", hexbuf);
3011 brcmu_format_hex(hexbuf, ra, sizeof(txh->TxFrameRA));
3012 printk(KERN_DEBUG "RA: %s\n", hexbuf);
3014 printk(KERN_DEBUG "Fb FES Time: %04x ", tfestfb);
3015 brcmu_format_hex(hexbuf, rtspfb, sizeof(txh->RTSPLCPFallback));
3016 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
3017 printk(KERN_DEBUG "RTS DUR: %04x ", rtsdfb);
3018 brcmu_format_hex(hexbuf, fragpfb, sizeof(txh->FragPLCPFallback));
3019 printk(KERN_DEBUG "PLCP: %s ", hexbuf);
3020 printk(KERN_DEBUG "DUR: %04x", fragdfb);
3021 printk(KERN_DEBUG "\n");
3023 printk(KERN_DEBUG "MModeLen: %04x ", mmodelen);
3024 printk(KERN_DEBUG "MModeFbrLen: %04x\n", mmodefbrlen);
3026 printk(KERN_DEBUG "FrameID: %04x\n", tfid);
3027 printk(KERN_DEBUG "TxStatus: %04x\n", txs);
3029 printk(KERN_DEBUG "MaxNumMpdu: %04x\n", mnmpdu);
3030 printk(KERN_DEBUG "MaxAggbyte: %04x\n", mabyte);
3031 printk(KERN_DEBUG "MaxAggbyte_fb: %04x\n", mabyte_f);
3032 printk(KERN_DEBUG "MinByte: %04x\n", mmbyte);
3034 brcmu_format_hex(hexbuf, rtsph, sizeof(txh->RTSPhyHeader));
3035 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
3036 brcmu_format_hex(hexbuf, (u8 *) &rts, sizeof(txh->rts_frame));
3037 printk(KERN_DEBUG "RTS Frame: %s", hexbuf);
3038 printk(KERN_DEBUG "\n");
3040 #endif /* defined(BCMDBG) */
3043 void wlc_print_rxh(d11rxhdr_t *rxh)
3045 u16 len = rxh->RxFrameSize;
3046 u16 phystatus_0 = rxh->PhyRxStatus_0;
3047 u16 phystatus_1 = rxh->PhyRxStatus_1;
3048 u16 phystatus_2 = rxh->PhyRxStatus_2;
3049 u16 phystatus_3 = rxh->PhyRxStatus_3;
3050 u16 macstatus1 = rxh->RxStatus1;
3051 u16 macstatus2 = rxh->RxStatus2;
3054 static const struct brcmu_bit_desc macstat_flags[] = {
3055 {RXS_FCSERR, "FCSErr"},
3056 {RXS_RESPFRAMETX, "Reply"},
3057 {RXS_PBPRES, "PADDING"},
3058 {RXS_DECATMPT, "DeCr"},
3059 {RXS_DECERR, "DeCrErr"},
3060 {RXS_BCNSENT, "Bcn"},
3064 printk(KERN_DEBUG "Raw RxDesc:\n");
3065 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, rxh, sizeof(d11rxhdr_t));
3067 brcmu_format_flags(macstat_flags, macstatus1, flagstr, 64);
3069 snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
3071 printk(KERN_DEBUG "RxFrameSize: %6s (%d)%s\n", lenbuf, len,
3072 (rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
3073 printk(KERN_DEBUG "RxPHYStatus: %04x %04x %04x %04x\n",
3074 phystatus_0, phystatus_1, phystatus_2, phystatus_3);
3075 printk(KERN_DEBUG "RxMACStatus: %x %s\n", macstatus1, flagstr);
3076 printk(KERN_DEBUG "RXMACaggtype: %x\n",
3077 (macstatus2 & RXS_AGGTYPE_MASK));
3078 printk(KERN_DEBUG "RxTSFTime: %04x\n", rxh->RxTSFTime);
3080 #endif /* defined(BCMDBG) */
3082 static u16 wlc_rate_shm_offset(struct wlc_info *wlc, u8 rate)
3084 return wlc_bmac_rate_shm_offset(wlc->hw, rate);
3087 /* Callback for device removed */
3090 * Attempts to queue a packet onto a multiple-precedence queue,
3091 * if necessary evicting a lower precedence packet from the queue.
3093 * 'prec' is the precedence number that has already been mapped
3094 * from the packet priority.
3096 * Returns true if packet consumed (queued), false if not.
3099 wlc_prec_enq(struct wlc_info *wlc, struct pktq *q, void *pkt, int prec)
3101 return wlc_prec_enq_head(wlc, q, pkt, prec, false);
3105 wlc_prec_enq_head(struct wlc_info *wlc, struct pktq *q, struct sk_buff *pkt,
3106 int prec, bool head)
3109 int eprec = -1; /* precedence to evict from */
3111 /* Determine precedence from which to evict packet, if any */
3112 if (pktq_pfull(q, prec))
3114 else if (pktq_full(q)) {
3115 p = brcmu_pktq_peek_tail(q, &eprec);
3117 wiphy_err(wlc->wiphy, "%s: Failing: eprec %d > prec %d"
3118 "\n", __func__, eprec, prec);
3123 /* Evict if needed */
3125 bool discard_oldest;
3127 discard_oldest = AC_BITMAP_TST(wlc->wme_dp, eprec);
3129 /* Refuse newer packet unless configured to discard oldest */
3130 if (eprec == prec && !discard_oldest) {
3131 wiphy_err(wlc->wiphy, "%s: No where to go, prec == %d"
3132 "\n", __func__, prec);
3136 /* Evict packet according to discard policy */
3137 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
3138 brcmu_pktq_pdeq_tail(q, eprec);
3139 brcmu_pkt_buf_free_skb(p);
3144 p = brcmu_pktq_penq_head(q, prec, pkt);
3146 p = brcmu_pktq_penq(q, prec, pkt);
3151 void wlc_txq_enq(void *ctx, struct scb *scb, struct sk_buff *sdu,
3154 struct wlc_info *wlc = (struct wlc_info *) ctx;
3155 struct wlc_txq_info *qi = wlc->pkt_queue; /* Check me */
3156 struct pktq *q = &qi->q;
3159 prio = sdu->priority;
3161 if (!wlc_prec_enq(wlc, q, sdu, prec)) {
3162 if (!EDCF_ENAB(wlc->pub)
3163 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL))
3164 wiphy_err(wlc->wiphy, "wl%d: wlc_txq_enq: txq overflow"
3165 "\n", wlc->pub->unit);
3168 * XXX we might hit this condtion in case
3169 * packet flooding from mac80211 stack
3171 brcmu_pkt_buf_free_skb(sdu);
3174 /* Check if flow control needs to be turned on after enqueuing the packet
3175 * Don't turn on flow control if EDCF is enabled. Driver would make the decision on what
3176 * to drop instead of relying on stack to make the right decision
3178 if (!EDCF_ENAB(wlc->pub)
3179 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
3180 if (pktq_len(q) >= wlc->pub->tunables->datahiwat) {
3181 wlc_txflowcontrol(wlc, qi, ON, ALLPRIO);
3183 } else if (wlc->pub->_priofc) {
3184 if (pktq_plen(q, wlc_prio2prec_map[prio]) >=
3185 wlc->pub->tunables->datahiwat) {
3186 wlc_txflowcontrol(wlc, qi, ON, prio);
3192 wlc_sendpkt_mac80211(struct wlc_info *wlc, struct sk_buff *sdu,
3193 struct ieee80211_hw *hw)
3198 struct scb *scb = &global_scb;
3199 struct ieee80211_hdr *d11_header = (struct ieee80211_hdr *)(sdu->data);
3201 /* 802.11 standard requires management traffic to go at highest priority */
3202 prio = ieee80211_is_data(d11_header->frame_control) ? sdu->priority :
3204 fifo = prio2fifo[prio];
3207 (wlc_d11hdrs_mac80211(wlc, hw, pkt, scb, 0, 1, fifo, 0, NULL, 0)))
3209 wlc_txq_enq(wlc, scb, pkt, WLC_PRIO_TO_PREC(prio));
3214 void wlc_send_q(struct wlc_info *wlc)
3216 struct sk_buff *pkt[DOT11_MAXNUMFRAGS];
3219 int err = 0, i, count;
3221 struct wlc_txq_info *qi = wlc->pkt_queue;
3222 struct pktq *q = &qi->q;
3223 struct ieee80211_tx_info *tx_info;
3230 prec_map = wlc->tx_prec_map;
3232 /* Send all the enq'd pkts that we can.
3233 * Dequeue packets with precedence with empty HW fifo only
3235 while (prec_map && (pkt[0] = brcmu_pktq_mdeq(q, prec_map, &prec))) {
3236 tx_info = IEEE80211_SKB_CB(pkt[0]);
3237 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
3238 err = wlc_sendampdu(wlc->ampdu, qi, pkt, prec);
3241 err = wlc_prep_pdu(wlc, pkt[0], &fifo);
3243 for (i = 0; i < count; i++) {
3244 wlc_txfifo(wlc, fifo, pkt[i], true, 1);
3249 if (err == -EBUSY) {
3250 brcmu_pktq_penq_head(q, prec, pkt[0]);
3251 /* If send failed due to any other reason than a change in
3252 * HW FIFO condition, quit. Otherwise, read the new prec_map!
3254 if (prec_map == wlc->tx_prec_map)
3256 prec_map = wlc->tx_prec_map;
3260 /* Check if flow control needs to be turned off after sending the packet */
3261 if (!EDCF_ENAB(wlc->pub)
3262 || (wlc->pub->wlfeatureflag & WL_SWFL_FLOWCONTROL)) {
3263 if (wlc_txflowcontrol_prio_isset(wlc, qi, ALLPRIO)
3264 && (pktq_len(q) < wlc->pub->tunables->datahiwat / 2)) {
3265 wlc_txflowcontrol(wlc, qi, OFF, ALLPRIO);
3267 } else if (wlc->pub->_priofc) {
3269 for (prio = MAXPRIO; prio >= 0; prio--) {
3270 if (wlc_txflowcontrol_prio_isset(wlc, qi, prio) &&
3271 (pktq_plen(q, wlc_prio2prec_map[prio]) <
3272 wlc->pub->tunables->datahiwat / 2)) {
3273 wlc_txflowcontrol(wlc, qi, OFF, prio);
3281 * bcmc_fid_generate:
3282 * Generate frame ID for a BCMC packet. The frag field is not used
3283 * for MC frames so is used as part of the sequence number.
3286 bcmc_fid_generate(struct wlc_info *wlc, struct wlc_bsscfg *bsscfg,
3291 frameid = le16_to_cpu(txh->TxFrameID) & ~(TXFID_SEQ_MASK |
3295 mc_fid_counter++) << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
3302 wlc_txfifo(struct wlc_info *wlc, uint fifo, struct sk_buff *p, bool commit,
3305 u16 frameid = INVALIDFID;
3308 txh = (d11txh_t *) (p->data);
3310 /* When a BC/MC frame is being committed to the BCMC fifo via DMA (NOT PIO), update
3311 * ucode or BSS info as appropriate.
3313 if (fifo == TX_BCMC_FIFO) {
3314 frameid = le16_to_cpu(txh->TxFrameID);
3318 if (WLC_WAR16165(wlc))
3319 wlc_war16165(wlc, true);
3322 /* Bump up pending count for if not using rpc. If rpc is used, this will be handled
3323 * in wlc_bmac_txfifo()
3326 TXPKTPENDINC(wlc, fifo, txpktpend);
3327 BCMMSG(wlc->wiphy, "pktpend inc %d to %d\n",
3328 txpktpend, TXPKTPENDGET(wlc, fifo));
3331 /* Commit BCMC sequence number in the SHM frame ID location */
3332 if (frameid != INVALIDFID)
3333 BCMCFID(wlc, frameid);
3335 if (dma_txfast(wlc->hw->di[fifo], p, commit) < 0) {
3336 wiphy_err(wlc->wiphy, "wlc_txfifo: fatal, toss frames !!!\n");
3341 wlc_compute_plcp(struct wlc_info *wlc, ratespec_t rspec, uint length, u8 *plcp)
3343 if (IS_MCS(rspec)) {
3344 wlc_compute_mimo_plcp(rspec, length, plcp);
3345 } else if (IS_OFDM(rspec)) {
3346 wlc_compute_ofdm_plcp(rspec, length, plcp);
3348 wlc_compute_cck_plcp(wlc, rspec, length, plcp);
3353 /* Rate: 802.11 rate code, length: PSDU length in octets */
3354 static void wlc_compute_mimo_plcp(ratespec_t rspec, uint length, u8 *plcp)
3356 u8 mcs = (u8) (rspec & RSPEC_RATE_MASK);
3358 if (RSPEC_IS40MHZ(rspec) || (mcs == 32))
3359 plcp[0] |= MIMO_PLCP_40MHZ;
3360 WLC_SET_MIMO_PLCP_LEN(plcp, length);
3361 plcp[3] = RSPEC_MIMOPLCP3(rspec); /* rspec already holds this byte */
3362 plcp[3] |= 0x7; /* set smoothing, not sounding ppdu & reserved */
3363 plcp[4] = 0; /* number of extension spatial streams bit 0 & 1 */
3367 /* Rate: 802.11 rate code, length: PSDU length in octets */
3369 wlc_compute_ofdm_plcp(ratespec_t rspec, u32 length, u8 *plcp)
3373 int rate = RSPEC2RATE(rspec);
3375 /* encode rate per 802.11a-1999 sec 17.3.4.1, with lsb transmitted first */
3376 rate_signal = rate_info[rate] & WLC_RATE_MASK;
3377 memset(plcp, 0, D11_PHY_HDR_LEN);
3378 D11A_PHY_HDR_SRATE((ofdm_phy_hdr_t *) plcp, rate_signal);
3380 tmp = (length & 0xfff) << 5;
3381 plcp[2] |= (tmp >> 16) & 0xff;
3382 plcp[1] |= (tmp >> 8) & 0xff;
3383 plcp[0] |= tmp & 0xff;
3389 * Compute PLCP, but only requires actual rate and length of pkt.
3390 * Rate is given in the driver standard multiple of 500 kbps.
3391 * le is set for 11 Mbps rate if necessary.
3392 * Broken out for PRQ.
3395 static void wlc_cck_plcp_set(struct wlc_info *wlc, int rate_500, uint length,
3409 usec = (length << 4) / 11;
3410 if ((length << 4) - (usec * 11) > 0)
3414 usec = (length << 3) / 11;
3415 if ((length << 3) - (usec * 11) > 0) {
3417 if ((usec * 11) - (length << 3) >= 8)
3418 le = D11B_PLCP_SIGNAL_LE;
3423 wiphy_err(wlc->wiphy, "wlc_cck_plcp_set: unsupported rate %d"
3425 rate_500 = WLC_RATE_1M;
3429 /* PLCP signal byte */
3430 plcp[0] = rate_500 * 5; /* r (500kbps) * 5 == r (100kbps) */
3431 /* PLCP service byte */
3432 plcp[1] = (u8) (le | D11B_PLCP_SIGNAL_LOCKED);
3433 /* PLCP length u16, little endian */
3434 plcp[2] = usec & 0xff;
3435 plcp[3] = (usec >> 8) & 0xff;
3441 /* Rate: 802.11 rate code, length: PSDU length in octets */
3442 static void wlc_compute_cck_plcp(struct wlc_info *wlc, ratespec_t rspec,
3443 uint length, u8 *plcp)
3445 int rate = RSPEC2RATE(rspec);
3447 wlc_cck_plcp_set(wlc, rate, length, plcp);
3450 /* wlc_compute_frame_dur()
3452 * Calculate the 802.11 MAC header DUR field for MPDU
3453 * DUR for a single frame = 1 SIFS + 1 ACK
3454 * DUR for a frame with following frags = 3 SIFS + 2 ACK + next frag time
3456 * rate MPDU rate in unit of 500kbps
3457 * next_frag_len next MPDU length in bytes
3458 * preamble_type use short/GF or long/MM PLCP header
3461 wlc_compute_frame_dur(struct wlc_info *wlc, ratespec_t rate, u8 preamble_type,
3466 sifs = SIFS(wlc->band);
3469 dur += (u16) wlc_calc_ack_time(wlc, rate, preamble_type);
3471 if (next_frag_len) {
3472 /* Double the current DUR to get 2 SIFS + 2 ACKs */
3474 /* add another SIFS and the frag time */
3477 (u16) wlc_calc_frame_time(wlc, rate, preamble_type,
3483 /* wlc_compute_rtscts_dur()
3485 * Calculate the 802.11 MAC header DUR field for an RTS or CTS frame
3486 * DUR for normal RTS/CTS w/ frame = 3 SIFS + 1 CTS + next frame time + 1 ACK
3487 * DUR for CTS-TO-SELF w/ frame = 2 SIFS + next frame time + 1 ACK
3489 * cts cts-to-self or rts/cts
3490 * rts_rate rts or cts rate in unit of 500kbps
3491 * rate next MPDU rate in unit of 500kbps
3492 * frame_len next MPDU frame length in bytes
3495 wlc_compute_rtscts_dur(struct wlc_info *wlc, bool cts_only, ratespec_t rts_rate,
3496 ratespec_t frame_rate, u8 rts_preamble_type,
3497 u8 frame_preamble_type, uint frame_len, bool ba)
3501 sifs = SIFS(wlc->band);
3503 if (!cts_only) { /* RTS/CTS */
3506 (u16) wlc_calc_cts_time(wlc, rts_rate,
3508 } else { /* CTS-TO-SELF */
3513 (u16) wlc_calc_frame_time(wlc, frame_rate, frame_preamble_type,
3517 (u16) wlc_calc_ba_time(wlc, frame_rate,
3518 WLC_SHORT_PREAMBLE);
3521 (u16) wlc_calc_ack_time(wlc, frame_rate,
3522 frame_preamble_type);
3526 u16 wlc_phytxctl1_calc(struct wlc_info *wlc, ratespec_t rspec)
3531 if (WLCISLCNPHY(wlc->band)) {
3532 bw = PHY_TXC1_BW_20MHZ;
3534 bw = RSPEC_GET_BW(rspec);
3535 /* 10Mhz is not supported yet */
3536 if (bw < PHY_TXC1_BW_20MHZ) {
3537 wiphy_err(wlc->wiphy, "wlc_phytxctl1_calc: bw %d is "
3538 "not supported yet, set to 20L\n", bw);
3539 bw = PHY_TXC1_BW_20MHZ;
3543 if (IS_MCS(rspec)) {
3544 uint mcs = rspec & RSPEC_RATE_MASK;
3546 /* bw, stf, coding-type is part of RSPEC_PHYTXBYTE2 returns */
3547 phyctl1 = RSPEC_PHYTXBYTE2(rspec);
3548 /* set the upper byte of phyctl1 */
3549 phyctl1 |= (mcs_table[mcs].tx_phy_ctl3 << 8);
3550 } else if (IS_CCK(rspec) && !WLCISLCNPHY(wlc->band)
3551 && !WLCISSSLPNPHY(wlc->band)) {
3552 /* In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate */
3553 /* Eventually MIMOPHY would also be converted to this format */
3554 /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */
3555 phyctl1 = (bw | (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
3556 } else { /* legacy OFDM/CCK */
3558 /* get the phyctl byte from rate phycfg table */
3559 phycfg = wlc_rate_legacy_phyctl(RSPEC2RATE(rspec));
3561 wiphy_err(wlc->wiphy, "wlc_phytxctl1_calc: wrong "
3562 "legacy OFDM/CCK rate\n");
3565 /* set the upper byte of phyctl1 */
3567 (bw | (phycfg << 8) |
3568 (RSPEC_STF(rspec) << PHY_TXC1_MODE_SHIFT));
3574 wlc_rspec_to_rts_rspec(struct wlc_info *wlc, ratespec_t rspec, bool use_rspec,
3577 ratespec_t rts_rspec = 0;
3580 /* use frame rate as rts rate */
3583 } else if (wlc->band->gmode && wlc->protection->_g && !IS_CCK(rspec)) {
3584 /* Use 11Mbps as the g protection RTS target rate and fallback.
3585 * Use the WLC_BASIC_RATE() lookup to find the best basic rate under the
3586 * target in case 11 Mbps is not Basic.
3587 * 6 and 9 Mbps are not usually selected by rate selection, but even
3588 * if the OFDM rate we are protecting is 6 or 9 Mbps, 11 is more robust.
3590 rts_rspec = WLC_BASIC_RATE(wlc, WLC_RATE_11M);
3592 /* calculate RTS rate and fallback rate based on the frame rate
3593 * RTS must be sent at a basic rate since it is a
3594 * control frame, sec 9.6 of 802.11 spec
3596 rts_rspec = WLC_BASIC_RATE(wlc, rspec);
3599 if (WLC_PHY_11N_CAP(wlc->band)) {
3600 /* set rts txbw to correct side band */
3601 rts_rspec &= ~RSPEC_BW_MASK;
3603 /* if rspec/rspec_fallback is 40MHz, then send RTS on both 20MHz channel
3604 * (DUP), otherwise send RTS on control channel
3606 if (RSPEC_IS40MHZ(rspec) && !IS_CCK(rts_rspec))
3607 rts_rspec |= (PHY_TXC1_BW_40MHZ_DUP << RSPEC_BW_SHIFT);
3609 rts_rspec |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
3611 /* pick siso/cdd as default for ofdm */
3612 if (IS_OFDM(rts_rspec)) {
3613 rts_rspec &= ~RSPEC_STF_MASK;
3614 rts_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
3621 * Add d11txh_t, cck_phy_hdr_t.
3623 * 'p' data must start with 802.11 MAC header
3624 * 'p' must allow enough bytes of local headers to be "pushed" onto the packet
3626 * headroom == D11_PHY_HDR_LEN + D11_TXH_LEN (D11_TXH_LEN is now 104 bytes)
3630 wlc_d11hdrs_mac80211(struct wlc_info *wlc, struct ieee80211_hw *hw,
3631 struct sk_buff *p, struct scb *scb, uint frag,
3632 uint nfrags, uint queue, uint next_frag_len,
3633 wsec_key_t *key, ratespec_t rspec_override)
3635 struct ieee80211_hdr *h;
3637 u8 *plcp, plcp_fallback[D11_PHY_HDR_LEN];
3638 int len, phylen, rts_phylen;
3639 u16 mch, phyctl, xfts, mainrates;
3640 u16 seq = 0, mcl = 0, status = 0, frameid = 0;
3641 ratespec_t rspec[2] = { WLC_RATE_1M, WLC_RATE_1M }, rts_rspec[2] = {
3642 WLC_RATE_1M, WLC_RATE_1M};
3643 bool use_rts = false;
3644 bool use_cts = false;
3645 bool use_rifs = false;
3646 bool short_preamble[2] = { false, false };
3647 u8 preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
3648 u8 rts_preamble_type[2] = { WLC_LONG_PREAMBLE, WLC_LONG_PREAMBLE };
3649 u8 *rts_plcp, rts_plcp_fallback[D11_PHY_HDR_LEN];
3650 struct ieee80211_rts *rts = NULL;
3654 bool hwtkmic = false;
3655 u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ;
3656 #define ANTCFG_NONE 0xFF
3657 u8 antcfg = ANTCFG_NONE;
3658 u8 fbantcfg = ANTCFG_NONE;
3659 uint phyctl1_stf = 0;
3661 struct ieee80211_tx_rate *txrate[2];
3663 struct ieee80211_tx_info *tx_info;
3666 u8 mimo_preamble_type;
3668 /* locate 802.11 MAC header */
3669 h = (struct ieee80211_hdr *)(p->data);
3670 qos = ieee80211_is_data_qos(h->frame_control);
3672 /* compute length of frame in bytes for use in PLCP computations */
3673 len = brcmu_pkttotlen(p);
3674 phylen = len + FCS_LEN;
3676 /* If WEP enabled, add room in phylen for the additional bytes of
3677 * ICV which MAC generates. We do NOT add the additional bytes to
3678 * the packet itself, thus phylen = packet length + ICV_LEN + FCS_LEN
3682 phylen += key->icv_len;
3686 tx_info = IEEE80211_SKB_CB(p);
3689 plcp = skb_push(p, D11_PHY_HDR_LEN);
3691 /* add Broadcom tx descriptor header */
3692 txh = (d11txh_t *) skb_push(p, D11_TXH_LEN);
3693 memset(txh, 0, D11_TXH_LEN);
3696 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
3697 /* non-AP STA should never use BCMC queue */
3698 if (queue == TX_BCMC_FIFO) {
3699 wiphy_err(wlc->wiphy, "wl%d: %s: ASSERT queue == "
3700 "TX_BCMC!\n", WLCWLUNIT(wlc), __func__);
3701 frameid = bcmc_fid_generate(wlc, NULL, txh);
3703 /* Increment the counter for first fragment */
3704 if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) {
3705 SCB_SEQNUM(scb, p->priority)++;
3708 /* extract fragment number from frame first */
3709 seq = le16_to_cpu(seq) & FRAGNUM_MASK;
3710 seq |= (SCB_SEQNUM(scb, p->priority) << SEQNUM_SHIFT);
3711 h->seq_ctrl = cpu_to_le16(seq);
3713 frameid = ((seq << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
3714 (queue & TXFID_QUEUE_MASK);
3717 frameid |= queue & TXFID_QUEUE_MASK;
3719 /* set the ignpmq bit for all pkts tx'd in PS mode and for beacons */
3720 if (SCB_PS(scb) || ieee80211_is_beacon(h->frame_control))
3721 mcl |= TXC_IGNOREPMQ;
3723 txrate[0] = tx_info->control.rates;
3724 txrate[1] = txrate[0] + 1;
3726 /* if rate control algorithm didn't give us a fallback rate, use the primary rate */
3727 if (txrate[1]->idx < 0) {
3728 txrate[1] = txrate[0];
3731 for (k = 0; k < hw->max_rates; k++) {
3733 txrate[k]->flags & IEEE80211_TX_RC_MCS ? true : false;
3735 if ((txrate[k]->idx >= 0)
3736 && (txrate[k]->idx <
3737 hw->wiphy->bands[tx_info->band]->n_bitrates)) {
3739 hw->wiphy->bands[tx_info->band]->
3740 bitrates[txrate[k]->idx].hw_value;
3743 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE ?
3746 rate_val[k] = WLC_RATE_1M;
3749 rate_val[k] = txrate[k]->idx;
3751 /* Currently only support same setting for primay and fallback rates.
3752 * Unify flags for each rate into a single value for the frame
3756 flags & IEEE80211_TX_RC_USE_RTS_CTS ? true : false;
3759 flags & IEEE80211_TX_RC_USE_CTS_PROTECT ? true : false;
3762 rate_val[k] |= NRATE_MCS_INUSE;
3764 rspec[k] = mac80211_wlc_set_nrate(wlc, wlc->band, rate_val[k]);
3766 /* (1) RATE: determine and validate primary rate and fallback rates */
3767 if (!RSPEC_ACTIVE(rspec[k])) {
3768 rspec[k] = WLC_RATE_1M;
3770 if (!is_multicast_ether_addr(h->addr1)) {
3771 /* set tx antenna config */
3772 wlc_antsel_antcfg_get(wlc->asi, false, false, 0,
3773 0, &antcfg, &fbantcfg);
3778 phyctl1_stf = wlc->stf->ss_opmode;
3780 if (N_ENAB(wlc->pub)) {
3781 for (k = 0; k < hw->max_rates; k++) {
3782 /* apply siso/cdd to single stream mcs's or ofdm if rspec is auto selected */
3783 if (((IS_MCS(rspec[k]) &&
3784 IS_SINGLE_STREAM(rspec[k] & RSPEC_RATE_MASK)) ||
3786 && ((rspec[k] & RSPEC_OVERRIDE_MCS_ONLY)
3787 || !(rspec[k] & RSPEC_OVERRIDE))) {
3788 rspec[k] &= ~(RSPEC_STF_MASK | RSPEC_STC_MASK);
3790 /* For SISO MCS use STBC if possible */
3791 if (IS_MCS(rspec[k])
3792 && WLC_STF_SS_STBC_TX(wlc, scb)) {
3795 stc = 1; /* Nss for single stream is always 1 */
3797 (PHY_TXC1_MODE_STBC <<
3798 RSPEC_STF_SHIFT) | (stc <<
3802 (phyctl1_stf << RSPEC_STF_SHIFT);
3805 /* Is the phy configured to use 40MHZ frames? If so then pick the desired txbw */
3806 if (CHSPEC_WLC_BW(wlc->chanspec) == WLC_40_MHZ) {
3807 /* default txbw is 20in40 SB */
3808 mimo_ctlchbw = mimo_txbw =
3809 CHSPEC_SB_UPPER(WLC_BAND_PI_RADIO_CHANSPEC)
3810 ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ;
3812 if (IS_MCS(rspec[k])) {
3813 /* mcs 32 must be 40b/w DUP */
3814 if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
3816 PHY_TXC1_BW_40MHZ_DUP;
3818 } else if (wlc->mimo_40txbw != AUTO)
3819 mimo_txbw = wlc->mimo_40txbw;
3820 /* else check if dst is using 40 Mhz */
3821 else if (scb->flags & SCB_IS40)
3822 mimo_txbw = PHY_TXC1_BW_40MHZ;
3823 } else if (IS_OFDM(rspec[k])) {
3824 if (wlc->ofdm_40txbw != AUTO)
3825 mimo_txbw = wlc->ofdm_40txbw;
3827 if (wlc->cck_40txbw != AUTO)
3828 mimo_txbw = wlc->cck_40txbw;
3831 /* mcs32 is 40 b/w only.
3832 * This is possible for probe packets on a STA during SCAN
3834 if ((rspec[k] & RSPEC_RATE_MASK) == 32) {
3836 rspec[k] = RSPEC_MIMORATE;
3838 mimo_txbw = PHY_TXC1_BW_20MHZ;
3841 /* Set channel width */
3842 rspec[k] &= ~RSPEC_BW_MASK;
3843 if ((k == 0) || ((k > 0) && IS_MCS(rspec[k])))
3844 rspec[k] |= (mimo_txbw << RSPEC_BW_SHIFT);
3846 rspec[k] |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
3850 if (IS_MCS(rspec[k])
3851 && (txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
3852 rspec[k] |= RSPEC_SHORT_GI;
3853 else if (!(txrate[k]->flags & IEEE80211_TX_RC_SHORT_GI))
3854 rspec[k] &= ~RSPEC_SHORT_GI;
3856 rspec[k] &= ~RSPEC_SHORT_GI;
3859 mimo_preamble_type = WLC_MM_PREAMBLE;
3860 if (txrate[k]->flags & IEEE80211_TX_RC_GREEN_FIELD)
3861 mimo_preamble_type = WLC_GF_PREAMBLE;
3863 if ((txrate[k]->flags & IEEE80211_TX_RC_MCS)
3864 && (!IS_MCS(rspec[k]))) {
3865 wiphy_err(wlc->wiphy, "wl%d: %s: IEEE80211_TX_"
3866 "RC_MCS != IS_MCS(rspec)\n",
3867 WLCWLUNIT(wlc), __func__);
3870 if (IS_MCS(rspec[k])) {
3871 preamble_type[k] = mimo_preamble_type;
3873 /* if SGI is selected, then forced mm for single stream */
3874 if ((rspec[k] & RSPEC_SHORT_GI)
3875 && IS_SINGLE_STREAM(rspec[k] &
3877 preamble_type[k] = WLC_MM_PREAMBLE;
3881 /* should be better conditionalized */
3882 if (!IS_MCS(rspec[0])
3883 && (tx_info->control.rates[0].
3884 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
3885 preamble_type[k] = WLC_SHORT_PREAMBLE;
3888 for (k = 0; k < hw->max_rates; k++) {
3889 /* Set ctrlchbw as 20Mhz */
3890 rspec[k] &= ~RSPEC_BW_MASK;
3891 rspec[k] |= (PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT);
3893 /* for nphy, stf of ofdm frames must follow policies */
3894 if (WLCISNPHY(wlc->band) && IS_OFDM(rspec[k])) {
3895 rspec[k] &= ~RSPEC_STF_MASK;
3896 rspec[k] |= phyctl1_stf << RSPEC_STF_SHIFT;
3901 /* Reset these for use with AMPDU's */
3902 txrate[0]->count = 0;
3903 txrate[1]->count = 0;
3905 /* (2) PROTECTION, may change rspec */
3906 if ((ieee80211_is_data(h->frame_control) ||
3907 ieee80211_is_mgmt(h->frame_control)) &&
3908 (phylen > wlc->RTSThresh) && !is_multicast_ether_addr(h->addr1))
3911 /* (3) PLCP: determine PLCP header and MAC duration, fill d11txh_t */
3912 wlc_compute_plcp(wlc, rspec[0], phylen, plcp);
3913 wlc_compute_plcp(wlc, rspec[1], phylen, plcp_fallback);
3914 memcpy(&txh->FragPLCPFallback,
3915 plcp_fallback, sizeof(txh->FragPLCPFallback));
3917 /* Length field now put in CCK FBR CRC field */
3918 if (IS_CCK(rspec[1])) {
3919 txh->FragPLCPFallback[4] = phylen & 0xff;
3920 txh->FragPLCPFallback[5] = (phylen & 0xff00) >> 8;
3923 /* MIMO-RATE: need validation ?? */
3925 IS_OFDM(rspec[0]) ? D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) plcp) :
3928 /* DUR field for main rate */
3929 if (!ieee80211_is_pspoll(h->frame_control) &&
3930 !is_multicast_ether_addr(h->addr1) && !use_rifs) {
3932 wlc_compute_frame_dur(wlc, rspec[0], preamble_type[0],
3934 h->duration_id = cpu_to_le16(durid);
3935 } else if (use_rifs) {
3936 /* NAV protect to end of next max packet size */
3938 (u16) wlc_calc_frame_time(wlc, rspec[0],
3940 DOT11_MAX_FRAG_LEN);
3941 durid += RIFS_11N_TIME;
3942 h->duration_id = cpu_to_le16(durid);
3945 /* DUR field for fallback rate */
3946 if (ieee80211_is_pspoll(h->frame_control))
3947 txh->FragDurFallback = h->duration_id;
3948 else if (is_multicast_ether_addr(h->addr1) || use_rifs)
3949 txh->FragDurFallback = 0;
3951 durid = wlc_compute_frame_dur(wlc, rspec[1],
3952 preamble_type[1], next_frag_len);
3953 txh->FragDurFallback = cpu_to_le16(durid);
3956 /* (4) MAC-HDR: MacTxControlLow */
3958 mcl |= TXC_STARTMSDU;
3960 if (!is_multicast_ether_addr(h->addr1))
3961 mcl |= TXC_IMMEDACK;
3963 if (BAND_5G(wlc->band->bandtype))
3964 mcl |= TXC_FREQBAND_5G;
3966 if (CHSPEC_IS40(WLC_BAND_PI_RADIO_CHANSPEC))
3969 /* set AMIC bit if using hardware TKIP MIC */
3973 txh->MacTxControlLow = cpu_to_le16(mcl);
3975 /* MacTxControlHigh */
3978 /* Set fallback rate preamble type */
3979 if ((preamble_type[1] == WLC_SHORT_PREAMBLE) ||
3980 (preamble_type[1] == WLC_GF_PREAMBLE)) {
3981 if (RSPEC2RATE(rspec[1]) != WLC_RATE_1M)
3982 mch |= TXC_PREAMBLE_DATA_FB_SHORT;
3985 /* MacFrameControl */
3986 memcpy(&txh->MacFrameControl, &h->frame_control, sizeof(u16));
3987 txh->TxFesTimeNormal = cpu_to_le16(0);
3989 txh->TxFesTimeFallback = cpu_to_le16(0);
3992 memcpy(&txh->TxFrameRA, &h->addr1, ETH_ALEN);
3995 txh->TxFrameID = cpu_to_le16(frameid);
3997 /* TxStatus, Note the case of recreating the first frag of a suppressed frame
3998 * then we may need to reset the retry cnt's via the status reg
4000 txh->TxStatus = cpu_to_le16(status);
4002 /* extra fields for ucode AMPDU aggregation, the new fields are added to
4003 * the END of previous structure so that it's compatible in driver.
4005 txh->MaxNMpdus = cpu_to_le16(0);
4006 txh->MaxABytes_MRT = cpu_to_le16(0);
4007 txh->MaxABytes_FBR = cpu_to_le16(0);
4008 txh->MinMBytes = cpu_to_le16(0);
4010 /* (5) RTS/CTS: determine RTS/CTS PLCP header and MAC duration, furnish d11txh_t */
4011 /* RTS PLCP header and RTS frame */
4012 if (use_rts || use_cts) {
4013 if (use_rts && use_cts)
4016 for (k = 0; k < 2; k++) {
4017 rts_rspec[k] = wlc_rspec_to_rts_rspec(wlc, rspec[k],
4022 if (!IS_OFDM(rts_rspec[0]) &&
4023 !((RSPEC2RATE(rts_rspec[0]) == WLC_RATE_1M) ||
4024 (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
4025 rts_preamble_type[0] = WLC_SHORT_PREAMBLE;
4026 mch |= TXC_PREAMBLE_RTS_MAIN_SHORT;
4029 if (!IS_OFDM(rts_rspec[1]) &&
4030 !((RSPEC2RATE(rts_rspec[1]) == WLC_RATE_1M) ||
4031 (wlc->PLCPHdr_override == WLC_PLCP_LONG))) {
4032 rts_preamble_type[1] = WLC_SHORT_PREAMBLE;
4033 mch |= TXC_PREAMBLE_RTS_FB_SHORT;
4036 /* RTS/CTS additions to MacTxControlLow */
4038 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDCTS);
4040 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDRTS);
4041 txh->MacTxControlLow |= cpu_to_le16(TXC_LONGFRAME);
4044 /* RTS PLCP header */
4045 rts_plcp = txh->RTSPhyHeader;
4047 rts_phylen = DOT11_CTS_LEN + FCS_LEN;
4049 rts_phylen = DOT11_RTS_LEN + FCS_LEN;
4051 wlc_compute_plcp(wlc, rts_rspec[0], rts_phylen, rts_plcp);
4053 /* fallback rate version of RTS PLCP header */
4054 wlc_compute_plcp(wlc, rts_rspec[1], rts_phylen,
4056 memcpy(&txh->RTSPLCPFallback, rts_plcp_fallback,
4057 sizeof(txh->RTSPLCPFallback));
4059 /* RTS frame fields... */
4060 rts = (struct ieee80211_rts *)&txh->rts_frame;
4062 durid = wlc_compute_rtscts_dur(wlc, use_cts, rts_rspec[0],
4063 rspec[0], rts_preamble_type[0],
4064 preamble_type[0], phylen, false);
4065 rts->duration = cpu_to_le16(durid);
4066 /* fallback rate version of RTS DUR field */
4067 durid = wlc_compute_rtscts_dur(wlc, use_cts,
4068 rts_rspec[1], rspec[1],
4069 rts_preamble_type[1],
4070 preamble_type[1], phylen, false);
4071 txh->RTSDurFallback = cpu_to_le16(durid);
4074 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
4075 IEEE80211_STYPE_CTS);
4077 memcpy(&rts->ra, &h->addr2, ETH_ALEN);
4079 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
4080 IEEE80211_STYPE_RTS);
4082 memcpy(&rts->ra, &h->addr1, 2 * ETH_ALEN);
4086 * low 8 bits: main frag rate/mcs,
4087 * high 8 bits: rts/cts rate/mcs
4089 mainrates |= (IS_OFDM(rts_rspec[0]) ?
4090 D11A_PHY_HDR_GRATE((ofdm_phy_hdr_t *) rts_plcp) :
4093 memset((char *)txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN);
4094 memset((char *)&txh->rts_frame, 0,
4095 sizeof(struct ieee80211_rts));
4096 memset((char *)txh->RTSPLCPFallback, 0,
4097 sizeof(txh->RTSPLCPFallback));
4098 txh->RTSDurFallback = 0;
4101 #ifdef SUPPORT_40MHZ
4102 /* add null delimiter count */
4103 if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && IS_MCS(rspec)) {
4104 txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] =
4105 wlc_ampdu_null_delim_cnt(wlc->ampdu, scb, rspec, phylen);
4109 /* Now that RTS/RTS FB preamble types are updated, write the final value */
4110 txh->MacTxControlHigh = cpu_to_le16(mch);
4112 /* MainRates (both the rts and frag plcp rates have been calculated now) */
4113 txh->MainRates = cpu_to_le16(mainrates);
4115 /* XtraFrameTypes */
4116 xfts = FRAMETYPE(rspec[1], wlc->mimoft);
4117 xfts |= (FRAMETYPE(rts_rspec[0], wlc->mimoft) << XFTS_RTS_FT_SHIFT);
4118 xfts |= (FRAMETYPE(rts_rspec[1], wlc->mimoft) << XFTS_FBRRTS_FT_SHIFT);
4120 CHSPEC_CHANNEL(WLC_BAND_PI_RADIO_CHANSPEC) << XFTS_CHANNEL_SHIFT;
4121 txh->XtraFrameTypes = cpu_to_le16(xfts);
4123 /* PhyTxControlWord */
4124 phyctl = FRAMETYPE(rspec[0], wlc->mimoft);
4125 if ((preamble_type[0] == WLC_SHORT_PREAMBLE) ||
4126 (preamble_type[0] == WLC_GF_PREAMBLE)) {
4127 if (RSPEC2RATE(rspec[0]) != WLC_RATE_1M)
4128 phyctl |= PHY_TXC_SHORT_HDR;
4131 /* phytxant is properly bit shifted */
4132 phyctl |= wlc_stf_d11hdrs_phyctl_txant(wlc, rspec[0]);
4133 txh->PhyTxControlWord = cpu_to_le16(phyctl);
4135 /* PhyTxControlWord_1 */
4136 if (WLC_PHY_11N_CAP(wlc->band)) {
4139 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[0]);
4140 txh->PhyTxControlWord_1 = cpu_to_le16(phyctl1);
4141 phyctl1 = wlc_phytxctl1_calc(wlc, rspec[1]);
4142 txh->PhyTxControlWord_1_Fbr = cpu_to_le16(phyctl1);
4144 if (use_rts || use_cts) {
4145 phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[0]);
4146 txh->PhyTxControlWord_1_Rts = cpu_to_le16(phyctl1);
4147 phyctl1 = wlc_phytxctl1_calc(wlc, rts_rspec[1]);
4148 txh->PhyTxControlWord_1_FbrRts = cpu_to_le16(phyctl1);
4152 * For mcs frames, if mixedmode(overloaded with long preamble) is going to be set,
4153 * fill in non-zero MModeLen and/or MModeFbrLen
4154 * it will be unnecessary if they are separated
4156 if (IS_MCS(rspec[0]) && (preamble_type[0] == WLC_MM_PREAMBLE)) {
4158 wlc_calc_lsig_len(wlc, rspec[0], phylen);
4159 txh->MModeLen = cpu_to_le16(mmodelen);
4162 if (IS_MCS(rspec[1]) && (preamble_type[1] == WLC_MM_PREAMBLE)) {
4164 wlc_calc_lsig_len(wlc, rspec[1], phylen);
4165 txh->MModeFbrLen = cpu_to_le16(mmodefbrlen);
4169 ac = skb_get_queue_mapping(p);
4170 if (SCB_WME(scb) && qos && wlc->edcf_txop[ac]) {
4171 uint frag_dur, dur, dur_fallback;
4173 /* WME: Update TXOP threshold */
4174 if ((!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) && (frag == 0)) {
4176 wlc_calc_frame_time(wlc, rspec[0], preamble_type[0],
4180 /* 1 RTS or CTS-to-self frame */
4182 wlc_calc_cts_time(wlc, rts_rspec[0],
4183 rts_preamble_type[0]);
4185 wlc_calc_cts_time(wlc, rts_rspec[1],
4186 rts_preamble_type[1]);
4187 /* (SIFS + CTS) + SIFS + frame + SIFS + ACK */
4188 dur += le16_to_cpu(rts->duration);
4190 le16_to_cpu(txh->RTSDurFallback);
4191 } else if (use_rifs) {
4195 /* frame + SIFS + ACK */
4198 wlc_compute_frame_dur(wlc, rspec[0],
4199 preamble_type[0], 0);
4202 wlc_calc_frame_time(wlc, rspec[1],
4206 wlc_compute_frame_dur(wlc, rspec[1],
4207 preamble_type[1], 0);
4209 /* NEED to set TxFesTimeNormal (hard) */
4210 txh->TxFesTimeNormal = cpu_to_le16((u16) dur);
4211 /* NEED to set fallback rate version of TxFesTimeNormal (hard) */
4212 txh->TxFesTimeFallback =
4213 cpu_to_le16((u16) dur_fallback);
4215 /* update txop byte threshold (txop minus intraframe overhead) */
4216 if (wlc->edcf_txop[ac] >= (dur - frag_dur)) {
4221 wlc_calc_frame_len(wlc, rspec[0],
4227 /* range bound the fragthreshold */
4228 if (newfragthresh < DOT11_MIN_FRAG_LEN)
4231 else if (newfragthresh >
4232 wlc->usr_fragthresh)
4234 wlc->usr_fragthresh;
4235 /* update the fragthresh and do txc update */
4236 if (wlc->fragthresh[queue] !=
4237 (u16) newfragthresh) {
4238 wlc->fragthresh[queue] =
4239 (u16) newfragthresh;
4243 wiphy_err(wlc->wiphy, "wl%d: %s txop invalid "
4245 wlc->pub->unit, fifo_names[queue],
4246 RSPEC2RATE(rspec[0]));
4248 if (dur > wlc->edcf_txop[ac])
4249 wiphy_err(wlc->wiphy, "wl%d: %s: %s txop "
4250 "exceeded phylen %d/%d dur %d/%d\n",
4251 wlc->pub->unit, __func__,
4253 phylen, wlc->fragthresh[queue],
4254 dur, wlc->edcf_txop[ac]);
4261 void wlc_tbtt(struct wlc_info *wlc, d11regs_t *regs)
4263 struct wlc_bsscfg *cfg = wlc->cfg;
4266 /* DirFrmQ is now valid...defer setting until end of ATIM window */
4267 wlc->qvalid |= MCMD_DIRFRMQVAL;
4271 static void wlc_war16165(struct wlc_info *wlc, bool tx)
4274 /* the post-increment is used in STAY_AWAKE macro */
4275 if (wlc->txpend16165war++ == 0)
4276 wlc_set_ps_ctrl(wlc);
4278 wlc->txpend16165war--;
4279 if (wlc->txpend16165war == 0)
4280 wlc_set_ps_ctrl(wlc);
4284 /* process an individual tx_status_t */
4287 wlc_dotxstatus(struct wlc_info *wlc, tx_status_t *txs, u32 frm_tx2)
4292 struct scb *scb = NULL;
4294 int tx_rts, tx_frame_count, tx_rts_count;
4295 uint totlen, supr_status;
4297 struct ieee80211_hdr *h;
4299 struct ieee80211_tx_info *tx_info;
4300 struct ieee80211_tx_rate *txrate;
4303 (void)(frm_tx2); /* Compiler reference to avoid unused variable warning */
4305 /* discard intermediate indications for ucode with one legitimate case:
4306 * e.g. if "useRTS" is set. ucode did a successful rts/cts exchange, but the subsequent
4307 * tx of DATA failed. so it will start rts/cts from the beginning (resetting the rts
4308 * transmission count)
4310 if (!(txs->status & TX_STATUS_AMPDU)
4311 && (txs->status & TX_STATUS_INTERMEDIATE)) {
4312 wiphy_err(wlc->wiphy, "%s: INTERMEDIATE but not AMPDU\n",
4317 queue = txs->frameid & TXFID_QUEUE_MASK;
4318 if (queue >= NFIFO) {
4323 p = GETNEXTTXP(wlc, queue);
4324 if (WLC_WAR16165(wlc))
4325 wlc_war16165(wlc, false);
4329 txh = (d11txh_t *) (p->data);
4330 mcl = le16_to_cpu(txh->MacTxControlLow);
4333 if (WL_ERROR_ON()) {
4334 wiphy_err(wlc->wiphy, "phyerr 0x%x, rate 0x%x\n",
4335 txs->phyerr, txh->MainRates);
4336 wlc_print_txdesc(txh);
4338 wlc_print_txstatus(txs);
4341 if (txs->frameid != cpu_to_le16(txh->TxFrameID))
4343 tx_info = IEEE80211_SKB_CB(p);
4344 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
4346 if (tx_info->control.sta)
4347 scb = (struct scb *)tx_info->control.sta->drv_priv;
4349 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
4350 wlc_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
4354 supr_status = txs->status & TX_STATUS_SUPR_MASK;
4355 if (supr_status == TX_STATUS_SUPR_BADCH)
4357 "%s: Pkt tx suppressed, possibly channel %d\n",
4358 __func__, CHSPEC_CHANNEL(wlc->default_bss->chanspec));
4360 tx_rts = cpu_to_le16(txh->MacTxControlLow) & TXC_SENDRTS;
4362 (txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT;
4364 (txs->status & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT;
4366 lastframe = !ieee80211_has_morefrags(h->frame_control);
4369 wiphy_err(wlc->wiphy, "Not last frame!\n");
4372 ieee80211_tx_info_clear_status(tx_info);
4373 if (queue < AC_COUNT) {
4374 sfbl = WLC_WME_RETRY_SFB_GET(wlc, wme_fifo2ac[queue]);
4375 lfbl = WLC_WME_RETRY_LFB_GET(wlc, wme_fifo2ac[queue]);
4381 txrate = tx_info->status.rates;
4382 /* FIXME: this should use a combination of sfbl, lfbl depending on frame length and RTS setting */
4383 if ((tx_frame_count > sfbl) && (txrate[1].idx >= 0)) {
4384 /* rate selection requested a fallback rate and we used it */
4385 txrate->count = lfbl;
4386 txrate[1].count = tx_frame_count - lfbl;
4388 /* rate selection did not request fallback rate, or we didn't need it */
4389 txrate->count = tx_frame_count;
4390 /* rc80211_minstrel.c:minstrel_tx_status() expects unused rates to be marked with idx = -1 */
4392 txrate[1].count = 0;
4395 /* clear the rest of the rates */
4396 for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) {
4398 txrate[i].count = 0;
4401 if (txs->status & TX_STATUS_ACK_RCV)
4402 tx_info->flags |= IEEE80211_TX_STAT_ACK;
4405 totlen = brcmu_pkttotlen(p);
4408 wlc_txfifo_complete(wlc, queue, 1);
4413 /* remove PLCP & Broadcom tx descriptor header */
4414 skb_pull(p, D11_PHY_HDR_LEN);
4415 skb_pull(p, D11_TXH_LEN);
4416 ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
4418 wiphy_err(wlc->wiphy, "%s: Not last frame => not calling "
4419 "tx_status\n", __func__);
4426 brcmu_pkt_buf_free_skb(p);
4433 wlc_txfifo_complete(struct wlc_info *wlc, uint fifo, s8 txpktpend)
4435 TXPKTPENDDEC(wlc, fifo, txpktpend);
4436 BCMMSG(wlc->wiphy, "pktpend dec %d to %d\n", txpktpend,
4437 TXPKTPENDGET(wlc, fifo));
4439 /* There is more room; mark precedences related to this FIFO sendable */
4440 WLC_TX_FIFO_ENAB(wlc, fifo);
4442 /* Clear MHF2_TXBCMC_NOW flag if BCMC fifo has drained */
4443 if (AP_ENAB(wlc->pub) &&
4444 !TXPKTPENDGET(wlc, TX_BCMC_FIFO)) {
4445 wlc_mhf(wlc, MHF2, MHF2_TXBCMC_NOW, 0, WLC_BAND_AUTO);
4448 /* figure out which bsscfg is being worked on... */
4451 /* Update beacon listen interval in shared memory */
4452 void wlc_bcn_li_upd(struct wlc_info *wlc)
4454 if (AP_ENAB(wlc->pub))
4457 /* wake up every DTIM is the default */
4458 if (wlc->bcn_li_dtim == 1)
4459 wlc_write_shm(wlc, M_BCN_LI, 0);
4461 wlc_write_shm(wlc, M_BCN_LI,
4462 (wlc->bcn_li_dtim << 8) | wlc->bcn_li_bcn);
4466 * recover 64bit TSF value from the 16bit TSF value in the rx header
4467 * given the assumption that the TSF passed in header is within 65ms
4468 * of the current tsf.
4471 * 3.......6.......8.......0.......2.......4.......6.......8......0
4472 * |<---------- tsf_h ----------->||<--- tsf_l -->||<-RxTSFTime ->|
4474 * The RxTSFTime are the lowest 16 bits and provided by the ucode. The
4475 * tsf_l is filled in by wlc_bmac_recv, which is done earlier in the
4476 * receive call sequence after rx interrupt. Only the higher 16 bits
4477 * are used. Finally, the tsf_h is read from the tsf register.
4479 static u64 wlc_recover_tsf64(struct wlc_info *wlc, struct wlc_d11rxhdr *rxh)
4482 u16 rx_tsf_0_15, rx_tsf_16_31;
4484 wlc_bmac_read_tsf(wlc->hw, &tsf_l, &tsf_h);
4486 rx_tsf_16_31 = (u16)(tsf_l >> 16);
4487 rx_tsf_0_15 = rxh->rxhdr.RxTSFTime;
4490 * a greater tsf time indicates the low 16 bits of
4491 * tsf_l wrapped, so decrement the high 16 bits.
4493 if ((u16)tsf_l < rx_tsf_0_15) {
4495 if (rx_tsf_16_31 == 0xffff)
4499 return ((u64)tsf_h << 32) | (((u32)rx_tsf_16_31 << 16) + rx_tsf_0_15);
4503 prep_mac80211_status(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p,
4504 struct ieee80211_rx_status *rx_status)
4506 wlc_d11rxhdr_t *wlc_rxh = (wlc_d11rxhdr_t *) rxh;
4510 unsigned char *plcp;
4512 /* fill in TSF and flag its presence */
4513 rx_status->mactime = wlc_recover_tsf64(wlc, wlc_rxh);
4514 rx_status->flag |= RX_FLAG_MACTIME_MPDU;
4516 channel = WLC_CHAN_CHANNEL(rxh->RxChan);
4519 rx_status->band = IEEE80211_BAND_5GHZ;
4520 rx_status->freq = ieee80211_ofdm_chan_to_freq(
4521 WF_CHAN_FACTOR_5_G/2, channel);
4524 rx_status->band = IEEE80211_BAND_2GHZ;
4525 rx_status->freq = ieee80211_dsss_chan_to_freq(channel);
4528 rx_status->signal = wlc_rxh->rssi; /* signal */
4532 rx_status->antenna = (rxh->PhyRxStatus_0 & PRXS0_RXANT_UPSUBBAND) ? 1 : 0; /* ant */
4536 rspec = wlc_compute_rspec(rxh, plcp);
4537 if (IS_MCS(rspec)) {
4538 rx_status->rate_idx = rspec & RSPEC_RATE_MASK;
4539 rx_status->flag |= RX_FLAG_HT;
4540 if (RSPEC_IS40MHZ(rspec))
4541 rx_status->flag |= RX_FLAG_40MHZ;
4543 switch (RSPEC2RATE(rspec)) {
4545 rx_status->rate_idx = 0;
4548 rx_status->rate_idx = 1;
4551 rx_status->rate_idx = 2;
4554 rx_status->rate_idx = 3;
4557 rx_status->rate_idx = 4;
4560 rx_status->rate_idx = 5;
4563 rx_status->rate_idx = 6;
4566 rx_status->rate_idx = 7;
4569 rx_status->rate_idx = 8;
4572 rx_status->rate_idx = 9;
4575 rx_status->rate_idx = 10;
4578 rx_status->rate_idx = 11;
4581 wiphy_err(wlc->wiphy, "%s: Unknown rate\n", __func__);
4584 /* Determine short preamble and rate_idx */
4586 if (IS_CCK(rspec)) {
4587 if (rxh->PhyRxStatus_0 & PRXS0_SHORTH)
4588 rx_status->flag |= RX_FLAG_SHORTPRE;
4589 } else if (IS_OFDM(rspec)) {
4590 rx_status->flag |= RX_FLAG_SHORTPRE;
4592 wiphy_err(wlc->wiphy, "%s: Unknown modulation\n",
4597 if (PLCP3_ISSGI(plcp[3]))
4598 rx_status->flag |= RX_FLAG_SHORT_GI;
4600 if (rxh->RxStatus1 & RXS_DECERR) {
4601 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
4602 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_PLCP_CRC\n",
4605 if (rxh->RxStatus1 & RXS_FCSERR) {
4606 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
4607 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_FCS_CRC\n",
4613 wlc_recvctl(struct wlc_info *wlc, d11rxhdr_t *rxh, struct sk_buff *p)
4616 struct ieee80211_rx_status rx_status;
4618 memset(&rx_status, 0, sizeof(rx_status));
4619 prep_mac80211_status(wlc, rxh, p, &rx_status);
4621 /* mac header+body length, exclude CRC and plcp header */
4622 len_mpdu = p->len - D11_PHY_HDR_LEN - FCS_LEN;
4623 skb_pull(p, D11_PHY_HDR_LEN);
4624 __skb_trim(p, len_mpdu);
4626 memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
4627 ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p);
4631 /* Process received frames */
4633 * Return true if more frames need to be processed. false otherwise.
4634 * Param 'bound' indicates max. # frames to process before break out.
4637 void wlc_recv(struct wlc_info *wlc, struct sk_buff *p)
4640 struct ieee80211_hdr *h;
4644 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
4646 /* frame starts with rxhdr */
4647 rxh = (d11rxhdr_t *) (p->data);
4649 /* strip off rxhdr */
4650 skb_pull(p, WL_HWRXOFF);
4652 /* fixup rx header endianness */
4653 rxh->RxFrameSize = le16_to_cpu(rxh->RxFrameSize);
4654 rxh->PhyRxStatus_0 = le16_to_cpu(rxh->PhyRxStatus_0);
4655 rxh->PhyRxStatus_1 = le16_to_cpu(rxh->PhyRxStatus_1);
4656 rxh->PhyRxStatus_2 = le16_to_cpu(rxh->PhyRxStatus_2);
4657 rxh->PhyRxStatus_3 = le16_to_cpu(rxh->PhyRxStatus_3);
4658 rxh->PhyRxStatus_4 = le16_to_cpu(rxh->PhyRxStatus_4);
4659 rxh->PhyRxStatus_5 = le16_to_cpu(rxh->PhyRxStatus_5);
4660 rxh->RxStatus1 = le16_to_cpu(rxh->RxStatus1);
4661 rxh->RxStatus2 = le16_to_cpu(rxh->RxStatus2);
4662 rxh->RxTSFTime = le16_to_cpu(rxh->RxTSFTime);
4663 rxh->RxChan = le16_to_cpu(rxh->RxChan);
4665 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU subframes */
4666 if (rxh->RxStatus1 & RXS_PBPRES) {
4668 wiphy_err(wlc->wiphy, "wl%d: wlc_recv: rcvd runt of "
4669 "len %d\n", wlc->pub->unit, p->len);
4675 h = (struct ieee80211_hdr *)(p->data + D11_PHY_HDR_LEN);
4678 if (rxh->RxStatus1 & RXS_FCSERR) {
4679 if (wlc->pub->mac80211_state & MAC80211_PROMISC_BCNS) {
4680 wiphy_err(wlc->wiphy, "FCSERR while scanning******* -"
4684 wiphy_err(wlc->wiphy, "RCSERR!!!\n");
4689 /* check received pkt has at least frame control field */
4690 if (len < D11_PHY_HDR_LEN + sizeof(h->frame_control)) {
4694 is_amsdu = rxh->RxStatus2 & RXS_AMSDU_MASK;
4696 /* explicitly test bad src address to avoid sending bad deauth */
4698 /* CTS and ACK CTL frames are w/o a2 */
4700 if (ieee80211_is_data(h->frame_control) ||
4701 ieee80211_is_mgmt(h->frame_control)) {
4702 if ((is_zero_ether_addr(h->addr2) ||
4703 is_multicast_ether_addr(h->addr2))) {
4704 wiphy_err(wlc->wiphy, "wl%d: %s: dropping a "
4705 "frame with invalid src mac address,"
4707 wlc->pub->unit, __func__, h->addr2);
4713 /* due to sheer numbers, toss out probe reqs for now */
4714 if (ieee80211_is_probe_req(h->frame_control))
4720 wlc_recvctl(wlc, rxh, p);
4724 brcmu_pkt_buf_free_skb(p);
4727 /* calculate frame duration for Mixed-mode L-SIG spoofing, return
4728 * number of bytes goes in the length field
4730 * Formula given by HT PHY Spec v 1.13
4731 * len = 3(nsyms + nstream + 3) - 3
4734 wlc_calc_lsig_len(struct wlc_info *wlc, ratespec_t ratespec, uint mac_len)
4736 uint nsyms, len = 0, kNdps;
4738 BCMMSG(wlc->wiphy, "wl%d: rate %d, len%d\n",
4739 wlc->pub->unit, RSPEC2RATE(ratespec), mac_len);
4741 if (IS_MCS(ratespec)) {
4742 uint mcs = ratespec & RSPEC_RATE_MASK;
4743 /* MCS_TXS(mcs) returns num tx streams - 1 */
4744 int tot_streams = (MCS_TXS(mcs) + 1) + RSPEC_STC(ratespec);
4746 /* the payload duration calculation matches that of regular ofdm */
4747 /* 1000Ndbps = kbps * 4 */
4749 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4750 RSPEC_ISSGI(ratespec)) * 4;
4752 if (RSPEC_STC(ratespec) == 0)
4753 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4755 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4756 APHY_TAIL_NBITS) * 1000, kNdps);
4758 /* STBC needs to have even number of symbols */
4761 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4762 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
4764 nsyms += (tot_streams + 3); /* (+3) account for HT-SIG(2) and HT-STF(1) */
4765 /* 3 bytes/symbol @ legacy 6Mbps rate */
4766 len = (3 * nsyms) - 3; /* (-3) excluding service bits and tail bits */
4772 /* calculate frame duration of a given rate and length, return time in usec unit */
4774 wlc_calc_frame_time(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
4777 uint nsyms, dur = 0, Ndps, kNdps;
4778 uint rate = RSPEC2RATE(ratespec);
4781 wiphy_err(wlc->wiphy, "wl%d: WAR: using rate of 1 mbps\n",
4786 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, len%d\n",
4787 wlc->pub->unit, ratespec, preamble_type, mac_len);
4789 if (IS_MCS(ratespec)) {
4790 uint mcs = ratespec & RSPEC_RATE_MASK;
4791 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
4793 dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
4794 if (preamble_type == WLC_MM_PREAMBLE)
4796 /* 1000Ndbps = kbps * 4 */
4798 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4799 RSPEC_ISSGI(ratespec)) * 4;
4801 if (RSPEC_STC(ratespec) == 0)
4802 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4804 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4805 APHY_TAIL_NBITS) * 1000, kNdps);
4807 /* STBC needs to have even number of symbols */
4810 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
4811 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
4813 dur += APHY_SYMBOL_TIME * nsyms;
4814 if (BAND_2G(wlc->band->bandtype))
4815 dur += DOT11_OFDM_SIGNAL_EXTENSION;
4816 } else if (IS_OFDM(rate)) {
4817 dur = APHY_PREAMBLE_TIME;
4818 dur += APHY_SIGNAL_TIME;
4819 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
4821 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
4823 CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS),
4825 dur += APHY_SYMBOL_TIME * nsyms;
4826 if (BAND_2G(wlc->band->bandtype))
4827 dur += DOT11_OFDM_SIGNAL_EXTENSION;
4829 /* calc # bits * 2 so factor of 2 in rate (1/2 mbps) will divide out */
4830 mac_len = mac_len * 8 * 2;
4831 /* calc ceiling of bits/rate = microseconds of air time */
4832 dur = (mac_len + rate - 1) / rate;
4833 if (preamble_type & WLC_SHORT_PREAMBLE)
4834 dur += BPHY_PLCP_SHORT_TIME;
4836 dur += BPHY_PLCP_TIME;
4841 /* The opposite of wlc_calc_frame_time */
4843 wlc_calc_frame_len(struct wlc_info *wlc, ratespec_t ratespec, u8 preamble_type,
4846 uint nsyms, mac_len, Ndps, kNdps;
4847 uint rate = RSPEC2RATE(ratespec);
4849 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, dur %d\n",
4850 wlc->pub->unit, ratespec, preamble_type, dur);
4852 if (IS_MCS(ratespec)) {
4853 uint mcs = ratespec & RSPEC_RATE_MASK;
4854 int tot_streams = MCS_TXS(mcs) + RSPEC_STC(ratespec);
4855 dur -= PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
4856 /* payload calculation matches that of regular ofdm */
4857 if (BAND_2G(wlc->band->bandtype))
4858 dur -= DOT11_OFDM_SIGNAL_EXTENSION;
4859 /* kNdbps = kbps * 4 */
4861 MCS_RATE(mcs, RSPEC_IS40MHZ(ratespec),
4862 RSPEC_ISSGI(ratespec)) * 4;
4863 nsyms = dur / APHY_SYMBOL_TIME;
4866 ((APHY_SERVICE_NBITS + APHY_TAIL_NBITS) * 1000)) / 8000;
4867 } else if (IS_OFDM(ratespec)) {
4868 dur -= APHY_PREAMBLE_TIME;
4869 dur -= APHY_SIGNAL_TIME;
4870 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
4872 nsyms = dur / APHY_SYMBOL_TIME;
4875 (APHY_SERVICE_NBITS + APHY_TAIL_NBITS)) / 8;
4877 if (preamble_type & WLC_SHORT_PREAMBLE)
4878 dur -= BPHY_PLCP_SHORT_TIME;
4880 dur -= BPHY_PLCP_TIME;
4881 mac_len = dur * rate;
4882 /* divide out factor of 2 in rate (1/2 mbps) */
4883 mac_len = mac_len / 8 / 2;
4889 wlc_calc_ba_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4891 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, "
4892 "preamble_type %d\n", wlc->pub->unit, rspec, preamble_type);
4893 /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
4894 * or equal to the rate of the immediately previous frame in the FES
4896 rspec = WLC_BASIC_RATE(wlc, rspec);
4897 /* BA len == 32 == 16(ctl hdr) + 4(ba len) + 8(bitmap) + 4(fcs) */
4898 return wlc_calc_frame_time(wlc, rspec, preamble_type,
4899 (DOT11_BA_LEN + DOT11_BA_BITMAP_LEN +
4904 wlc_calc_ack_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4908 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d\n",
4909 wlc->pub->unit, rspec, preamble_type);
4910 /* Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that is less than
4911 * or equal to the rate of the immediately previous frame in the FES
4913 rspec = WLC_BASIC_RATE(wlc, rspec);
4914 /* ACK frame len == 14 == 2(fc) + 2(dur) + 6(ra) + 4(fcs) */
4916 wlc_calc_frame_time(wlc, rspec, preamble_type,
4917 (DOT11_ACK_LEN + FCS_LEN));
4922 wlc_calc_cts_time(struct wlc_info *wlc, ratespec_t rspec, u8 preamble_type)
4924 BCMMSG(wlc->wiphy, "wl%d: ratespec 0x%x, preamble_type %d\n",
4925 wlc->pub->unit, rspec, preamble_type);
4926 return wlc_calc_ack_time(wlc, rspec, preamble_type);
4929 /* derive wlc->band->basic_rate[] table from 'rateset' */
4930 void wlc_rate_lookup_init(struct wlc_info *wlc, wlc_rateset_t *rateset)
4936 u8 *br = wlc->band->basic_rate;
4939 /* incoming rates are in 500kbps units as in 802.11 Supported Rates */
4940 memset(br, 0, WLC_MAXRATE + 1);
4942 /* For each basic rate in the rates list, make an entry in the
4943 * best basic lookup.
4945 for (i = 0; i < rateset->count; i++) {
4946 /* only make an entry for a basic rate */
4947 if (!(rateset->rates[i] & WLC_RATE_FLAG))
4950 /* mask off basic bit */
4951 rate = (rateset->rates[i] & WLC_RATE_MASK);
4953 if (rate > WLC_MAXRATE) {
4954 wiphy_err(wlc->wiphy, "wlc_rate_lookup_init: invalid "
4955 "rate 0x%X in rate set\n",
4963 /* The rate lookup table now has non-zero entries for each
4964 * basic rate, equal to the basic rate: br[basicN] = basicN
4966 * To look up the best basic rate corresponding to any
4967 * particular rate, code can use the basic_rate table
4970 * basic_rate = wlc->band->basic_rate[tx_rate]
4972 * Make sure there is a best basic rate entry for
4973 * every rate by walking up the table from low rates
4974 * to high, filling in holes in the lookup table
4977 for (i = 0; i < wlc->band->hw_rateset.count; i++) {
4978 rate = wlc->band->hw_rateset.rates[i];
4980 if (br[rate] != 0) {
4981 /* This rate is a basic rate.
4982 * Keep track of the best basic rate so far by
4993 /* This rate is not a basic rate so figure out the
4994 * best basic rate less than this rate and fill in
4995 * the hole in the table
4998 br[rate] = IS_OFDM(rate) ? ofdm_basic : cck_basic;
5003 if (IS_OFDM(rate)) {
5004 /* In 11g and 11a, the OFDM mandatory rates are 6, 12, and 24 Mbps */
5005 if (rate >= WLC_RATE_24M)
5006 mandatory = WLC_RATE_24M;
5007 else if (rate >= WLC_RATE_12M)
5008 mandatory = WLC_RATE_12M;
5010 mandatory = WLC_RATE_6M;
5012 /* In 11b, all the CCK rates are mandatory 1 - 11 Mbps */
5016 br[rate] = mandatory;
5020 static void wlc_write_rate_shm(struct wlc_info *wlc, u8 rate, u8 basic_rate)
5023 u8 basic_phy_rate, basic_index;
5024 u16 dir_table, basic_table;
5027 /* Shared memory address for the table we are reading */
5028 dir_table = IS_OFDM(basic_rate) ? M_RT_DIRMAP_A : M_RT_DIRMAP_B;
5030 /* Shared memory address for the table we are writing */
5031 basic_table = IS_OFDM(rate) ? M_RT_BBRSMAP_A : M_RT_BBRSMAP_B;
5034 * for a given rate, the LS-nibble of the PLCP SIGNAL field is
5035 * the index into the rate table.
5037 phy_rate = rate_info[rate] & WLC_RATE_MASK;
5038 basic_phy_rate = rate_info[basic_rate] & WLC_RATE_MASK;
5039 index = phy_rate & 0xf;
5040 basic_index = basic_phy_rate & 0xf;
5042 /* Find the SHM pointer to the ACK rate entry by looking in the
5045 basic_ptr = wlc_read_shm(wlc, (dir_table + basic_index * 2));
5047 /* Update the SHM BSS-basic-rate-set mapping table with the pointer
5048 * to the correct basic rate for the given incoming rate
5050 wlc_write_shm(wlc, (basic_table + index * 2), basic_ptr);
5053 static const wlc_rateset_t *wlc_rateset_get_hwrs(struct wlc_info *wlc)
5055 const wlc_rateset_t *rs_dflt;
5057 if (WLC_PHY_11N_CAP(wlc->band)) {
5058 if (BAND_5G(wlc->band->bandtype))
5059 rs_dflt = &ofdm_mimo_rates;
5061 rs_dflt = &cck_ofdm_mimo_rates;
5062 } else if (wlc->band->gmode)
5063 rs_dflt = &cck_ofdm_rates;
5065 rs_dflt = &cck_rates;
5070 void wlc_set_ratetable(struct wlc_info *wlc)
5072 const wlc_rateset_t *rs_dflt;
5074 u8 rate, basic_rate;
5077 rs_dflt = wlc_rateset_get_hwrs(wlc);
5079 wlc_rateset_copy(rs_dflt, &rs);
5080 wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
5082 /* walk the phy rate table and update SHM basic rate lookup table */
5083 for (i = 0; i < rs.count; i++) {
5084 rate = rs.rates[i] & WLC_RATE_MASK;
5086 /* for a given rate WLC_BASIC_RATE returns the rate at
5087 * which a response ACK/CTS should be sent.
5089 basic_rate = WLC_BASIC_RATE(wlc, rate);
5090 if (basic_rate == 0) {
5091 /* This should only happen if we are using a
5092 * restricted rateset.
5094 basic_rate = rs.rates[0] & WLC_RATE_MASK;
5097 wlc_write_rate_shm(wlc, rate, basic_rate);
5102 * Return true if the specified rate is supported by the specified band.
5103 * WLC_BAND_AUTO indicates the current band.
5105 bool wlc_valid_rate(struct wlc_info *wlc, ratespec_t rspec, int band,
5108 wlc_rateset_t *hw_rateset;
5111 if ((band == WLC_BAND_AUTO) || (band == wlc->band->bandtype)) {
5112 hw_rateset = &wlc->band->hw_rateset;
5113 } else if (NBANDS(wlc) > 1) {
5114 hw_rateset = &wlc->bandstate[OTHERBANDUNIT(wlc)]->hw_rateset;
5116 /* other band specified and we are a single band device */
5120 /* check if this is a mimo rate */
5121 if (IS_MCS(rspec)) {
5122 if (!VALID_MCS((rspec & RSPEC_RATE_MASK)))
5125 return isset(hw_rateset->mcs, (rspec & RSPEC_RATE_MASK));
5128 for (i = 0; i < hw_rateset->count; i++)
5129 if (hw_rateset->rates[i] == RSPEC2RATE(rspec))
5133 wiphy_err(wlc->wiphy, "wl%d: wlc_valid_rate: rate spec 0x%x "
5134 "not in hw_rateset\n", wlc->pub->unit, rspec);
5140 static void wlc_update_mimo_band_bwcap(struct wlc_info *wlc, u8 bwcap)
5143 struct wlcband *band;
5145 for (i = 0; i < NBANDS(wlc); i++) {
5146 if (IS_SINGLEBAND_5G(wlc->deviceid))
5148 band = wlc->bandstate[i];
5149 if (band->bandtype == WLC_BAND_5G) {
5150 if ((bwcap == WLC_N_BW_40ALL)
5151 || (bwcap == WLC_N_BW_20IN2G_40IN5G))
5152 band->mimo_cap_40 = true;
5154 band->mimo_cap_40 = false;
5156 if (bwcap == WLC_N_BW_40ALL)
5157 band->mimo_cap_40 = true;
5159 band->mimo_cap_40 = false;
5164 void wlc_mod_prb_rsp_rate_table(struct wlc_info *wlc, uint frame_len)
5166 const wlc_rateset_t *rs_dflt;
5170 u8 plcp[D11_PHY_HDR_LEN];
5174 sifs = SIFS(wlc->band);
5176 rs_dflt = wlc_rateset_get_hwrs(wlc);
5178 wlc_rateset_copy(rs_dflt, &rs);
5179 wlc_rateset_mcs_upd(&rs, wlc->stf->txstreams);
5181 /* walk the phy rate table and update MAC core SHM basic rate table entries */
5182 for (i = 0; i < rs.count; i++) {
5183 rate = rs.rates[i] & WLC_RATE_MASK;
5185 entry_ptr = wlc_rate_shm_offset(wlc, rate);
5187 /* Calculate the Probe Response PLCP for the given rate */
5188 wlc_compute_plcp(wlc, rate, frame_len, plcp);
5190 /* Calculate the duration of the Probe Response frame plus SIFS for the MAC */
5192 (u16) wlc_calc_frame_time(wlc, rate, WLC_LONG_PREAMBLE,
5196 /* Update the SHM Rate Table entry Probe Response values */
5197 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS,
5198 (u16) (plcp[0] + (plcp[1] << 8)));
5199 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_PLCP_POS + 2,
5200 (u16) (plcp[2] + (plcp[3] << 8)));
5201 wlc_write_shm(wlc, entry_ptr + M_RT_PRS_DUR_POS, dur);
5205 /* Max buffering needed for beacon template/prb resp template is 142 bytes.
5207 * PLCP header is 6 bytes.
5208 * 802.11 A3 header is 24 bytes.
5209 * Max beacon frame body template length is 112 bytes.
5210 * Max probe resp frame body template length is 110 bytes.
5212 * *len on input contains the max length of the packet available.
5214 * The *len value is set to the number of bytes in buf used, and starts with the PLCP
5215 * and included up to, but not including, the 4 byte FCS.
5218 wlc_bcn_prb_template(struct wlc_info *wlc, u16 type, ratespec_t bcn_rspec,
5219 struct wlc_bsscfg *cfg, u16 *buf, int *len)
5221 static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};
5222 cck_phy_hdr_t *plcp;
5223 struct ieee80211_mgmt *h;
5224 int hdr_len, body_len;
5226 if (MBSS_BCN_ENAB(cfg) && type == IEEE80211_STYPE_BEACON)
5227 hdr_len = DOT11_MAC_HDR_LEN;
5229 hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
5230 body_len = *len - hdr_len; /* calc buffer size provided for frame body */
5232 *len = hdr_len + body_len; /* return actual size */
5234 /* format PHY and MAC headers */
5235 memset((char *)buf, 0, hdr_len);
5237 plcp = (cck_phy_hdr_t *) buf;
5239 /* PLCP for Probe Response frames are filled in from core's rate table */
5240 if (type == IEEE80211_STYPE_BEACON && !MBSS_BCN_ENAB(cfg)) {
5242 wlc_compute_plcp(wlc, bcn_rspec,
5243 (DOT11_MAC_HDR_LEN + body_len + FCS_LEN),
5247 /* "Regular" and 16 MBSS but not for 4 MBSS */
5248 /* Update the phytxctl for the beacon based on the rspec */
5249 if (!SOFTBCN_ENAB(cfg))
5250 wlc_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
5252 if (MBSS_BCN_ENAB(cfg) && type == IEEE80211_STYPE_BEACON)
5253 h = (struct ieee80211_mgmt *)&plcp[0];
5255 h = (struct ieee80211_mgmt *)&plcp[1];
5257 /* fill in 802.11 header */
5258 h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type);
5260 /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
5261 /* A1 filled in by MAC for prb resp, broadcast for bcn */
5262 if (type == IEEE80211_STYPE_BEACON)
5263 memcpy(&h->da, ðer_bcast, ETH_ALEN);
5264 memcpy(&h->sa, &cfg->cur_etheraddr, ETH_ALEN);
5265 memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN);
5267 /* SEQ filled in by MAC */
5272 int wlc_get_header_len()
5277 /* Update a beacon for a particular BSS
5278 * For MBSS, this updates the software template and sets "latest" to the index of the
5280 * Otherwise, it updates the hardware template.
5282 void wlc_bss_update_beacon(struct wlc_info *wlc, struct wlc_bsscfg *cfg)
5284 int len = BCN_TMPL_LEN;
5286 /* Clear the soft intmask */
5287 wlc->defmacintmask &= ~MI_BCNTPL;
5289 if (!cfg->up) { /* Only allow updates on an UP bss */
5293 /* Optimize: Some of if/else could be combined */
5294 if (!MBSS_BCN_ENAB(cfg) && HWBCN_ENAB(cfg)) {
5295 /* Hardware beaconing for this config */
5296 u16 bcn[BCN_TMPL_LEN / 2];
5297 u32 both_valid = MCMD_BCN0VLD | MCMD_BCN1VLD;
5298 d11regs_t *regs = wlc->regs;
5300 /* Check if both templates are in use, if so sched. an interrupt
5301 * that will call back into this routine
5303 if ((R_REG(®s->maccommand) & both_valid) == both_valid) {
5304 /* clear any previous status */
5305 W_REG(®s->macintstatus, MI_BCNTPL);
5307 /* Check that after scheduling the interrupt both of the
5308 * templates are still busy. if not clear the int. & remask
5310 if ((R_REG(®s->maccommand) & both_valid) == both_valid) {
5311 wlc->defmacintmask |= MI_BCNTPL;
5316 wlc_lowest_basic_rspec(wlc, &cfg->current_bss->rateset);
5317 /* update the template and ucode shm */
5318 wlc_bcn_prb_template(wlc, IEEE80211_STYPE_BEACON,
5319 wlc->bcn_rspec, cfg, bcn, &len);
5320 wlc_write_hw_bcntemplates(wlc, bcn, len, false);
5325 * Update all beacons for the system.
5327 void wlc_update_beacon(struct wlc_info *wlc)
5330 struct wlc_bsscfg *bsscfg;
5332 /* update AP or IBSS beacons */
5333 FOREACH_BSS(wlc, idx, bsscfg) {
5334 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
5335 wlc_bss_update_beacon(wlc, bsscfg);
5339 /* Write ssid into shared memory */
5340 void wlc_shm_ssid_upd(struct wlc_info *wlc, struct wlc_bsscfg *cfg)
5342 u8 *ssidptr = cfg->SSID;
5344 u8 ssidbuf[IEEE80211_MAX_SSID_LEN];
5346 /* padding the ssid with zero and copy it into shm */
5347 memset(ssidbuf, 0, IEEE80211_MAX_SSID_LEN);
5348 memcpy(ssidbuf, ssidptr, cfg->SSID_len);
5350 wlc_copyto_shm(wlc, base, ssidbuf, IEEE80211_MAX_SSID_LEN);
5352 if (!MBSS_BCN_ENAB(cfg))
5353 wlc_write_shm(wlc, M_SSIDLEN, (u16) cfg->SSID_len);
5356 void wlc_update_probe_resp(struct wlc_info *wlc, bool suspend)
5359 struct wlc_bsscfg *bsscfg;
5361 /* update AP or IBSS probe responses */
5362 FOREACH_BSS(wlc, idx, bsscfg) {
5363 if (bsscfg->up && (BSSCFG_AP(bsscfg) || !bsscfg->BSS))
5364 wlc_bss_update_probe_resp(wlc, bsscfg, suspend);
5369 wlc_bss_update_probe_resp(struct wlc_info *wlc, struct wlc_bsscfg *cfg,
5372 u16 prb_resp[BCN_TMPL_LEN / 2];
5373 int len = BCN_TMPL_LEN;
5375 /* write the probe response to hardware, or save in the config structure */
5376 if (!MBSS_PRB_ENAB(cfg)) {
5378 /* create the probe response template */
5379 wlc_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0, cfg,
5383 wlc_suspend_mac_and_wait(wlc);
5385 /* write the probe response into the template region */
5386 wlc_bmac_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
5387 (len + 3) & ~3, prb_resp);
5389 /* write the length of the probe response frame (+PLCP/-FCS) */
5390 wlc_write_shm(wlc, M_PRB_RESP_FRM_LEN, (u16) len);
5392 /* write the SSID and SSID length */
5393 wlc_shm_ssid_upd(wlc, cfg);
5396 * Write PLCP headers and durations for probe response frames at all rates.
5397 * Use the actual frame length covered by the PLCP header for the call to
5398 * wlc_mod_prb_rsp_rate_table() by subtracting the PLCP len and adding the FCS.
5400 len += (-D11_PHY_HDR_LEN + FCS_LEN);
5401 wlc_mod_prb_rsp_rate_table(wlc, (u16) len);
5404 wlc_enable_mac(wlc);
5405 } else { /* Generating probe resp in sw; update local template */
5406 /* error: No software probe response support without MBSS */
5410 /* prepares pdu for transmission. returns BCM error codes */
5411 int wlc_prep_pdu(struct wlc_info *wlc, struct sk_buff *pdu, uint *fifop)
5415 struct ieee80211_hdr *h;
5418 txh = (d11txh_t *) (pdu->data);
5419 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
5421 /* get the pkt queue info. This was put at wlc_sendctl or wlc_send for PDU */
5422 fifo = le16_to_cpu(txh->TxFrameID) & TXFID_QUEUE_MASK;
5428 /* return if insufficient dma resources */
5429 if (TXAVAIL(wlc, fifo) < MAX_DMA_SEGS) {
5430 /* Mark precedences related to this FIFO, unsendable */
5431 WLC_TX_FIFO_CLEAR(wlc, fifo);
5437 /* init tx reported rate mechanism */
5438 void wlc_reprate_init(struct wlc_info *wlc)
5441 struct wlc_bsscfg *bsscfg;
5443 FOREACH_BSS(wlc, i, bsscfg) {
5444 wlc_bsscfg_reprate_init(bsscfg);
5448 /* per bsscfg init tx reported rate mechanism */
5449 void wlc_bsscfg_reprate_init(struct wlc_bsscfg *bsscfg)
5451 bsscfg->txrspecidx = 0;
5452 memset((char *)bsscfg->txrspec, 0, sizeof(bsscfg->txrspec));
5455 void wlc_default_rateset(struct wlc_info *wlc, wlc_rateset_t *rs)
5457 wlc_rateset_default(rs, NULL, wlc->band->phytype, wlc->band->bandtype,
5458 false, WLC_RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
5459 CHSPEC_WLC_BW(wlc->default_bss->chanspec),
5460 wlc->stf->txstreams);
5463 static void wlc_bss_default_init(struct wlc_info *wlc)
5465 chanspec_t chanspec;
5466 struct wlcband *band;
5467 wlc_bss_info_t *bi = wlc->default_bss;
5469 /* init default and target BSS with some sane initial values */
5470 memset((char *)(bi), 0, sizeof(wlc_bss_info_t));
5471 bi->beacon_period = ISSIM_ENAB(wlc->pub->sih) ? BEACON_INTERVAL_DEF_QT :
5472 BEACON_INTERVAL_DEFAULT;
5473 bi->dtim_period = ISSIM_ENAB(wlc->pub->sih) ? DTIM_INTERVAL_DEF_QT :
5474 DTIM_INTERVAL_DEFAULT;
5476 /* fill the default channel as the first valid channel
5477 * starting from the 2G channels
5479 chanspec = CH20MHZ_CHSPEC(1);
5480 wlc->home_chanspec = bi->chanspec = chanspec;
5482 /* find the band of our default channel */
5484 if (NBANDS(wlc) > 1 && band->bandunit != CHSPEC_WLCBANDUNIT(chanspec))
5485 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
5487 /* init bss rates to the band specific default rate set */
5488 wlc_rateset_default(&bi->rateset, NULL, band->phytype, band->bandtype,
5489 false, WLC_RATE_MASK_FULL, (bool) N_ENAB(wlc->pub),
5490 CHSPEC_WLC_BW(chanspec), wlc->stf->txstreams);
5492 if (N_ENAB(wlc->pub))
5493 bi->flags |= WLC_BSS_HT;
5497 mac80211_wlc_set_nrate(struct wlc_info *wlc, struct wlcband *cur_band,
5500 u8 stf = (int_val & NRATE_STF_MASK) >> NRATE_STF_SHIFT;
5501 u8 rate = int_val & NRATE_RATE_MASK;
5503 bool ismcs = ((int_val & NRATE_MCS_INUSE) == NRATE_MCS_INUSE);
5504 bool issgi = ((int_val & NRATE_SGI_MASK) >> NRATE_SGI_SHIFT);
5505 bool override_mcs_only = ((int_val & NRATE_OVERRIDE_MCS_ONLY)
5506 == NRATE_OVERRIDE_MCS_ONLY);
5510 return (ratespec_t) rate;
5513 /* validate the combination of rate/mcs/stf is allowed */
5514 if (N_ENAB(wlc->pub) && ismcs) {
5515 /* mcs only allowed when nmode */
5516 if (stf > PHY_TXC1_MODE_SDM) {
5517 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid stf\n",
5518 WLCWLUNIT(wlc), __func__);
5523 /* mcs 32 is a special case, DUP mode 40 only */
5525 if (!CHSPEC_IS40(wlc->home_chanspec) ||
5526 ((stf != PHY_TXC1_MODE_SISO)
5527 && (stf != PHY_TXC1_MODE_CDD))) {
5528 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid mcs "
5529 "32\n", WLCWLUNIT(wlc), __func__);
5533 /* mcs > 7 must use stf SDM */
5534 } else if (rate > HIGHEST_SINGLE_STREAM_MCS) {
5535 /* mcs > 7 must use stf SDM */
5536 if (stf != PHY_TXC1_MODE_SDM) {
5537 BCMMSG(wlc->wiphy, "wl%d: enabling "
5538 "SDM mode for mcs %d\n",
5539 WLCWLUNIT(wlc), rate);
5540 stf = PHY_TXC1_MODE_SDM;
5543 /* MCS 0-7 may use SISO, CDD, and for phy_rev >= 3 STBC */
5544 if ((stf > PHY_TXC1_MODE_STBC) ||
5545 (!WLC_STBC_CAP_PHY(wlc)
5546 && (stf == PHY_TXC1_MODE_STBC))) {
5547 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid STBC"
5548 "\n", WLCWLUNIT(wlc), __func__);
5553 } else if (IS_OFDM(rate)) {
5554 if ((stf != PHY_TXC1_MODE_CDD) && (stf != PHY_TXC1_MODE_SISO)) {
5555 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid OFDM\n",
5556 WLCWLUNIT(wlc), __func__);
5560 } else if (IS_CCK(rate)) {
5561 if ((cur_band->bandtype != WLC_BAND_2G)
5562 || (stf != PHY_TXC1_MODE_SISO)) {
5563 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid CCK\n",
5564 WLCWLUNIT(wlc), __func__);
5569 wiphy_err(wlc->wiphy, "wl%d: %s: Unknown rate type\n",
5570 WLCWLUNIT(wlc), __func__);
5574 /* make sure multiple antennae are available for non-siso rates */
5575 if ((stf != PHY_TXC1_MODE_SISO) && (wlc->stf->txstreams == 1)) {
5576 wiphy_err(wlc->wiphy, "wl%d: %s: SISO antenna but !SISO "
5577 "request\n", WLCWLUNIT(wlc), __func__);
5584 rspec |= RSPEC_MIMORATE;
5585 /* For STBC populate the STC field of the ratespec */
5586 if (stf == PHY_TXC1_MODE_STBC) {
5588 stc = 1; /* Nss for single stream is always 1 */
5589 rspec |= (stc << RSPEC_STC_SHIFT);
5593 rspec |= (stf << RSPEC_STF_SHIFT);
5595 if (override_mcs_only)
5596 rspec |= RSPEC_OVERRIDE_MCS_ONLY;
5599 rspec |= RSPEC_SHORT_GI;
5602 && !wlc_valid_rate(wlc, rspec, cur_band->bandtype, true)) {
5611 /* formula: IDLE_BUSY_RATIO_X_16 = (100-duty_cycle)/duty_cycle*16 */
5613 wlc_duty_cycle_set(struct wlc_info *wlc, int duty_cycle, bool isOFDM,
5616 int idle_busy_ratio_x_16 = 0;
5618 isOFDM ? M_TX_IDLE_BUSY_RATIO_X_16_OFDM :
5619 M_TX_IDLE_BUSY_RATIO_X_16_CCK;
5620 if (duty_cycle > 100 || duty_cycle < 0) {
5621 wiphy_err(wlc->wiphy, "wl%d: duty cycle value off limit\n",
5626 idle_busy_ratio_x_16 = (100 - duty_cycle) * 16 / duty_cycle;
5627 /* Only write to shared memory when wl is up */
5629 wlc_write_shm(wlc, offset, (u16) idle_busy_ratio_x_16);
5632 wlc->tx_duty_cycle_ofdm = (u16) duty_cycle;
5634 wlc->tx_duty_cycle_cck = (u16) duty_cycle;
5639 /* Read a single u16 from shared memory.
5640 * SHM 'offset' needs to be an even address
5642 u16 wlc_read_shm(struct wlc_info *wlc, uint offset)
5644 return wlc_bmac_read_shm(wlc->hw, offset);
5647 /* Write a single u16 to shared memory.
5648 * SHM 'offset' needs to be an even address
5650 void wlc_write_shm(struct wlc_info *wlc, uint offset, u16 v)
5652 wlc_bmac_write_shm(wlc->hw, offset, v);
5655 /* Copy a buffer to shared memory.
5656 * SHM 'offset' needs to be an even address and
5657 * Buffer length 'len' must be an even number of bytes
5659 void wlc_copyto_shm(struct wlc_info *wlc, uint offset, const void *buf, int len)
5661 /* offset and len need to be even */
5662 if (len <= 0 || (offset & 1) || (len & 1))
5665 wlc_bmac_copyto_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL);
5669 /* wrapper BMAC functions to for HIGH driver access */
5670 void wlc_mctrl(struct wlc_info *wlc, u32 mask, u32 val)
5672 wlc_bmac_mctrl(wlc->hw, mask, val);
5675 void wlc_mhf(struct wlc_info *wlc, u8 idx, u16 mask, u16 val, int bands)
5677 wlc_bmac_mhf(wlc->hw, idx, mask, val, bands);
5680 int wlc_xmtfifo_sz_get(struct wlc_info *wlc, uint fifo, uint *blocks)
5682 return wlc_bmac_xmtfifo_sz_get(wlc->hw, fifo, blocks);
5685 void wlc_write_template_ram(struct wlc_info *wlc, int offset, int len,
5688 wlc_bmac_write_template_ram(wlc->hw, offset, len, buf);
5691 void wlc_write_hw_bcntemplates(struct wlc_info *wlc, void *bcn, int len,
5694 wlc_bmac_write_hw_bcntemplates(wlc->hw, bcn, len, both);
5698 wlc_set_addrmatch(struct wlc_info *wlc, int match_reg_offset,
5701 wlc_bmac_set_addrmatch(wlc->hw, match_reg_offset, addr);
5702 if (match_reg_offset == RCM_BSSID_OFFSET)
5703 memcpy(wlc->cfg->BSSID, addr, ETH_ALEN);
5706 void wlc_pllreq(struct wlc_info *wlc, bool set, mbool req_bit)
5708 wlc_bmac_pllreq(wlc->hw, set, req_bit);
5711 void wlc_reset_bmac_done(struct wlc_info *wlc)
5715 /* check for the particular priority flow control bit being set */
5717 wlc_txflowcontrol_prio_isset(struct wlc_info *wlc, struct wlc_txq_info *q,
5722 if (prio == ALLPRIO) {
5723 prio_mask = TXQ_STOP_FOR_PRIOFC_MASK;
5725 prio_mask = NBITVAL(prio);
5728 return (q->stopped & prio_mask) == prio_mask;
5731 /* propagate the flow control to all interfaces using the given tx queue */
5732 void wlc_txflowcontrol(struct wlc_info *wlc, struct wlc_txq_info *qi,
5738 BCMMSG(wlc->wiphy, "flow control kicks in\n");
5740 if (prio == ALLPRIO) {
5741 prio_bits = TXQ_STOP_FOR_PRIOFC_MASK;
5743 prio_bits = NBITVAL(prio);
5746 cur_bits = qi->stopped & prio_bits;
5748 /* Check for the case of no change and return early
5749 * Otherwise update the bit and continue
5752 if (cur_bits == prio_bits) {
5755 mboolset(qi->stopped, prio_bits);
5757 if (cur_bits == 0) {
5760 mboolclr(qi->stopped, prio_bits);
5763 /* If there is a flow control override we will not change the external
5764 * flow control state.
5766 if (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK) {
5770 wlc_txflowcontrol_signal(wlc, qi, on, prio);
5774 wlc_txflowcontrol_override(struct wlc_info *wlc, struct wlc_txq_info *qi,
5775 bool on, uint override)
5779 prev_override = (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK);
5781 /* Update the flow control bits and do an early return if there is
5782 * no change in the external flow control state.
5785 mboolset(qi->stopped, override);
5786 /* if there was a previous override bit on, then setting this
5787 * makes no difference.
5789 if (prev_override) {
5793 wlc_txflowcontrol_signal(wlc, qi, ON, ALLPRIO);
5795 mboolclr(qi->stopped, override);
5796 /* clearing an override bit will only make a difference for
5797 * flow control if it was the only bit set. For any other
5798 * override setting, just return
5800 if (prev_override != override) {
5804 if (qi->stopped == 0) {
5805 wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
5809 for (prio = MAXPRIO; prio >= 0; prio--) {
5810 if (!mboolisset(qi->stopped, NBITVAL(prio)))
5811 wlc_txflowcontrol_signal(wlc, qi, OFF,
5818 static void wlc_txflowcontrol_reset(struct wlc_info *wlc)
5820 struct wlc_txq_info *qi;
5822 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
5824 wlc_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
5831 wlc_txflowcontrol_signal(struct wlc_info *wlc, struct wlc_txq_info *qi, bool on,
5834 #ifdef NON_FUNCTIONAL
5835 /* wlcif_list is never filled so this function is not functional */
5836 struct wlc_if *wlcif;
5838 for (wlcif = wlc->wlcif_list; wlcif != NULL; wlcif = wlcif->next) {
5839 if (wlcif->qi == qi && wlcif->flags & WLC_IF_LINKED)
5840 brcms_txflowcontrol(wlc->wl, wlcif->wlif, on, prio);
5845 static struct wlc_txq_info *wlc_txq_alloc(struct wlc_info *wlc)
5847 struct wlc_txq_info *qi, *p;
5849 qi = kzalloc(sizeof(struct wlc_txq_info), GFP_ATOMIC);
5852 * Have enough room for control packets along with HI watermark
5853 * Also, add room to txq for total psq packets if all the SCBs
5854 * leave PS mode. The watermark for flowcontrol to OS packets
5855 * will remain the same
5857 brcmu_pktq_init(&qi->q, WLC_PREC_COUNT,
5858 (2 * wlc->pub->tunables->datahiwat) + PKTQ_LEN_DEFAULT
5859 + wlc->pub->psq_pkts_total);
5861 /* add this queue to the the global list */
5864 wlc->tx_queues = qi;
5866 while (p->next != NULL)
5874 static void wlc_txq_free(struct wlc_info *wlc, struct wlc_txq_info *qi)
5876 struct wlc_txq_info *p;
5881 /* remove the queue from the linked list */
5884 wlc->tx_queues = p->next;
5886 while (p != NULL && p->next != qi)
5889 p->next = p->next->next;
5896 * Flag 'scan in progress' to withhold dynamic phy calibration
5898 void wlc_scan_start(struct wlc_info *wlc)
5900 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, true);
5903 void wlc_scan_stop(struct wlc_info *wlc)
5905 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, false);
5908 void wlc_associate_upd(struct wlc_info *wlc, bool state)
5910 wlc->pub->associated = state;
5911 wlc->cfg->associated = state;
5915 * When a remote STA/AP is removed by Mac80211, or when it can no longer accept
5916 * AMPDU traffic, packets pending in hardware have to be invalidated so that
5917 * when later on hardware releases them, they can be handled appropriately.
5919 void wlc_inval_dma_pkts(struct wlc_hw_info *hw,
5920 struct ieee80211_sta *sta,
5921 void (*dma_callback_fn))
5923 struct dma_pub *dmah;
5925 for (i = 0; i < NFIFO; i++) {
5928 dma_walk_packets(dmah, dma_callback_fn, sta);
5932 int wlc_get_curband(struct wlc_info *wlc)
5934 return wlc->band->bandunit;
5937 void wlc_wait_for_tx_completion(struct wlc_info *wlc, bool drop)
5939 /* flush packet queue when requested */
5941 brcmu_pktq_flush(&wlc->pkt_queue->q, false, NULL, NULL);
5943 /* wait for queue and DMA fifos to run dry */
5944 while (!pktq_empty(&wlc->pkt_queue->q) ||
5945 TXPKTPENDTOT(wlc) > 0) {
5946 brcms_msleep(wlc->wl, 1);
5950 int wlc_set_par(struct wlc_info *wlc, enum wlc_par_id par_id, int int_val)
5955 case IOV_BCN_LI_BCN:
5956 wlc->bcn_li_bcn = (u8) int_val;
5958 wlc_bcn_li_upd(wlc);
5960 /* As long as override is false, this only sets the *user*
5961 targets. User can twiddle this all he wants with no harm.
5962 wlc_phy_txpower_set() explicitly sets override to false if
5963 not internal or test.
5969 /* Remove override bit and clip to max qdbm value */
5970 qdbm = (u8)min_t(u32, (int_val & ~WL_TXPWR_OVERRIDE), 0xff);
5971 /* Extract override setting */
5972 override = (int_val & WL_TXPWR_OVERRIDE) ? true : false;
5974 wlc_phy_txpower_set(wlc->band->pi, qdbm, override);
5978 wlc->mpc = (bool)int_val;
5979 wlc_radio_mpc_upd(wlc);
5987 int wlc_get_par(struct wlc_info *wlc, enum wlc_par_id par_id, int *ret_int_ptr)
5992 case IOV_BCN_LI_BCN:
5993 *ret_int_ptr = wlc->bcn_li_bcn;
5995 case IOV_QTXPOWER: {
5999 err = wlc_phy_txpower_get(wlc->band->pi, &qdbm,
6004 /* Return qdbm units */
6006 qdbm | (override ? WL_TXPWR_OVERRIDE : 0);
6010 *ret_int_ptr = (s32) wlc->mpc;
6019 * Search the name=value vars for a specific one and return its value.
6020 * Returns NULL if not found.
6022 char *getvar(char *vars, const char *name)
6034 /* first look in vars[] */
6035 for (s = vars; s && *s;) {
6036 if ((memcmp(s, name, len) == 0) && (s[len] == '='))
6047 * Search the vars for a specific one and return its value as
6048 * an integer. Returns 0 if not found.
6050 int getintvar(char *vars, const char *name)
6054 val = getvar(vars, name);
6058 return simple_strtoul(val, NULL, 0);