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.
17 #include <linux/pci_ids.h>
18 #include <linux/if_ether.h>
19 #include <net/mac80211.h>
20 #include <brcm_hw_ids.h>
22 #include <chipcommon.h>
25 #include "phy/phy_hal.h"
30 #include "mac80211_if.h"
31 #include "ucode_loader.h"
35 * Indication for txflowcontrol that all priority bits in
36 * TXQ_STOP_FOR_PRIOFC_MASK are to be considered.
41 * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
43 #define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
45 /* watchdog timer, in unit of ms */
46 #define TIMER_INTERVAL_WATCHDOG 1000
47 /* radio monitor timer, in unit of ms */
48 #define TIMER_INTERVAL_RADIOCHK 800
50 /* Max MPC timeout, in unit of watchdog */
51 #ifndef BRCMS_MPC_MAX_DELAYCNT
52 #define BRCMS_MPC_MAX_DELAYCNT 10
55 /* Min MPC timeout, in unit of watchdog */
56 #define BRCMS_MPC_MIN_DELAYCNT 1
57 #define BRCMS_MPC_THRESHOLD 3 /* MPC count threshold level */
59 /* beacon interval, in unit of 1024TU */
60 #define BEACON_INTERVAL_DEFAULT 100
61 /* DTIM interval, in unit of beacon interval */
62 #define DTIM_INTERVAL_DEFAULT 3
64 /* Scale down delays to accommodate QT slow speed */
65 /* beacon interval, in unit of 1024TU */
66 #define BEACON_INTERVAL_DEF_QT 20
67 /* DTIM interval, in unit of beacon interval */
68 #define DTIM_INTERVAL_DEF_QT 1
70 #define TBTT_ALIGN_LEEWAY_US 100 /* min leeway before first TBTT in us */
72 /* n-mode support capability */
73 /* 2x2 includes both 1x1 & 2x2 devices
74 * reserved #define 2 for future when we want to separate 1x1 & 2x2 and
75 * control it independently
81 /* define 11n feature disable flags */
82 #define WLFEATURE_DISABLE_11N 0x00000001
83 #define WLFEATURE_DISABLE_11N_STBC_TX 0x00000002
84 #define WLFEATURE_DISABLE_11N_STBC_RX 0x00000004
85 #define WLFEATURE_DISABLE_11N_SGI_TX 0x00000008
86 #define WLFEATURE_DISABLE_11N_SGI_RX 0x00000010
87 #define WLFEATURE_DISABLE_11N_AMPDU_TX 0x00000020
88 #define WLFEATURE_DISABLE_11N_AMPDU_RX 0x00000040
89 #define WLFEATURE_DISABLE_11N_GF 0x00000080
91 #define EDCF_ACI_MASK 0x60
92 #define EDCF_ACI_SHIFT 5
93 #define EDCF_ECWMIN_MASK 0x0f
94 #define EDCF_ECWMAX_SHIFT 4
95 #define EDCF_AIFSN_MASK 0x0f
96 #define EDCF_AIFSN_MAX 15
97 #define EDCF_ECWMAX_MASK 0xf0
99 #define EDCF_AC_BE_TXOP_STA 0x0000
100 #define EDCF_AC_BK_TXOP_STA 0x0000
101 #define EDCF_AC_VO_ACI_STA 0x62
102 #define EDCF_AC_VO_ECW_STA 0x32
103 #define EDCF_AC_VI_ACI_STA 0x42
104 #define EDCF_AC_VI_ECW_STA 0x43
105 #define EDCF_AC_BK_ECW_STA 0xA4
106 #define EDCF_AC_VI_TXOP_STA 0x005e
107 #define EDCF_AC_VO_TXOP_STA 0x002f
108 #define EDCF_AC_BE_ACI_STA 0x03
109 #define EDCF_AC_BE_ECW_STA 0xA4
110 #define EDCF_AC_BK_ACI_STA 0x27
111 #define EDCF_AC_VO_TXOP_AP 0x002f
113 #define EDCF_TXOP2USEC(txop) ((txop) << 5)
114 #define EDCF_ECW2CW(exp) ((1 << (exp)) - 1)
116 #define APHY_SYMBOL_TIME 4
117 #define APHY_PREAMBLE_TIME 16
118 #define APHY_SIGNAL_TIME 4
119 #define APHY_SIFS_TIME 16
120 #define APHY_SERVICE_NBITS 16
121 #define APHY_TAIL_NBITS 6
122 #define BPHY_SIFS_TIME 10
123 #define BPHY_PLCP_SHORT_TIME 96
125 #define PREN_PREAMBLE 24
126 #define PREN_MM_EXT 12
127 #define PREN_PREAMBLE_EXT 4
129 #define DOT11_MAC_HDR_LEN 24
130 #define DOT11_ACK_LEN 10
131 #define DOT11_BA_LEN 4
132 #define DOT11_OFDM_SIGNAL_EXTENSION 6
133 #define DOT11_MIN_FRAG_LEN 256
134 #define DOT11_RTS_LEN 16
135 #define DOT11_CTS_LEN 10
136 #define DOT11_BA_BITMAP_LEN 128
137 #define DOT11_MIN_BEACON_PERIOD 1
138 #define DOT11_MAX_BEACON_PERIOD 0xFFFF
139 #define DOT11_MAXNUMFRAGS 16
140 #define DOT11_MAX_FRAG_LEN 2346
142 #define BPHY_PLCP_TIME 192
143 #define RIFS_11N_TIME 2
146 #define WME_SUBTYPE_PARAM_IE 1
148 #define WME_OUI "\x00\x50\xf2"
155 #define BCN_TMPL_LEN 512 /* length of the BCN template area */
157 /* brcms_bss_info flag bit values */
158 #define BRCMS_BSS_HT 0x0020 /* BSS is HT (MIMO) capable */
160 /* Flags used in brcms_c_txq_info.stopped */
161 /* per prio flow control bits */
162 #define TXQ_STOP_FOR_PRIOFC_MASK 0x000000FF
163 /* stop txq enqueue for packet drain */
164 #define TXQ_STOP_FOR_PKT_DRAIN 0x00000100
165 /* stop txq enqueue for ampdu flow control */
166 #define TXQ_STOP_FOR_AMPDU_FLOW_CNTRL 0x00000200
168 #define BRCMS_HWRXOFF 38 /* chip rx buffer offset */
170 /* Find basic rate for a given rate */
171 static u8 brcms_basic_rate(struct brcms_c_info *wlc, u32 rspec)
173 if (is_mcs_rate(rspec))
174 return wlc->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK]
176 return wlc->band->basic_rate[rspec & RSPEC_RATE_MASK];
179 static u16 frametype(u32 rspec, u8 mimoframe)
181 if (is_mcs_rate(rspec))
183 return is_cck_rate(rspec) ? FT_CCK : FT_OFDM;
186 /* rfdisable delay timer 500 ms, runs of ALP clock */
187 #define RFDISABLE_DEFAULT 10000000
189 #define BRCMS_TEMPSENSE_PERIOD 10 /* 10 second timeout */
191 /* precedences numbers for wlc queues. These are twice as may levels as
193 * Odd numbers are used for HI priority traffic at same precedence levels
194 * These constants are used ONLY by wlc_prio2prec_map. Do not use them
197 #define _BRCMS_PREC_NONE 0 /* None = - */
198 #define _BRCMS_PREC_BK 2 /* BK - Background */
199 #define _BRCMS_PREC_BE 4 /* BE - Best-effort */
200 #define _BRCMS_PREC_EE 6 /* EE - Excellent-effort */
201 #define _BRCMS_PREC_CL 8 /* CL - Controlled Load */
202 #define _BRCMS_PREC_VI 10 /* Vi - Video */
203 #define _BRCMS_PREC_VO 12 /* Vo - Voice */
204 #define _BRCMS_PREC_NC 14 /* NC - Network Control */
206 /* The BSS is generating beacons in HW */
207 #define BRCMS_BSSCFG_HW_BCN 0x20
209 #define SYNTHPU_DLY_APHY_US 3700 /* a phy synthpu_dly time in us */
210 #define SYNTHPU_DLY_BPHY_US 1050 /* b/g phy synthpu_dly time in us */
211 #define SYNTHPU_DLY_NPHY_US 2048 /* n phy REV3 synthpu_dly time in us */
212 #define SYNTHPU_DLY_LPPHY_US 300 /* lpphy synthpu_dly time in us */
214 #define SYNTHPU_DLY_PHY_US_QT 100 /* QT synthpu_dly time in us */
216 #define ANTCNT 10 /* vanilla M_MAX_ANTCNT value */
218 /* Per-AC retry limit register definitions; uses defs.h bitfield macros */
219 #define EDCF_SHORT_S 0
221 #define EDCF_LONG_S 8
222 #define EDCF_LFB_S 12
223 #define EDCF_SHORT_M BITFIELD_MASK(4)
224 #define EDCF_SFB_M BITFIELD_MASK(4)
225 #define EDCF_LONG_M BITFIELD_MASK(4)
226 #define EDCF_LFB_M BITFIELD_MASK(4)
228 #define RETRY_SHORT_DEF 7 /* Default Short retry Limit */
229 #define RETRY_SHORT_MAX 255 /* Maximum Short retry Limit */
230 #define RETRY_LONG_DEF 4 /* Default Long retry count */
231 #define RETRY_SHORT_FB 3 /* Short count for fallback rate */
232 #define RETRY_LONG_FB 2 /* Long count for fallback rate */
234 #define APHY_CWMIN 15
235 #define PHY_CWMAX 1023
237 #define EDCF_AIFSN_MIN 1
239 #define FRAGNUM_MASK 0xF
241 #define APHY_SLOT_TIME 9
242 #define BPHY_SLOT_TIME 20
244 #define WL_SPURAVOID_OFF 0
245 #define WL_SPURAVOID_ON1 1
246 #define WL_SPURAVOID_ON2 2
248 /* invalid core flags, use the saved coreflags */
249 #define BRCMS_USE_COREFLAGS 0xffffffff
251 /* values for PLCPHdr_override */
252 #define BRCMS_PLCP_AUTO -1
253 #define BRCMS_PLCP_SHORT 0
254 #define BRCMS_PLCP_LONG 1
256 /* values for g_protection_override and n_protection_override */
257 #define BRCMS_PROTECTION_AUTO -1
258 #define BRCMS_PROTECTION_OFF 0
259 #define BRCMS_PROTECTION_ON 1
260 #define BRCMS_PROTECTION_MMHDR_ONLY 2
261 #define BRCMS_PROTECTION_CTS_ONLY 3
263 /* values for g_protection_control and n_protection_control */
264 #define BRCMS_PROTECTION_CTL_OFF 0
265 #define BRCMS_PROTECTION_CTL_LOCAL 1
266 #define BRCMS_PROTECTION_CTL_OVERLAP 2
268 /* values for n_protection */
269 #define BRCMS_N_PROTECTION_OFF 0
270 #define BRCMS_N_PROTECTION_OPTIONAL 1
271 #define BRCMS_N_PROTECTION_20IN40 2
272 #define BRCMS_N_PROTECTION_MIXEDMODE 3
274 /* values for band specific 40MHz capabilities */
275 #define BRCMS_N_BW_20ALL 0
276 #define BRCMS_N_BW_40ALL 1
277 #define BRCMS_N_BW_20IN2G_40IN5G 2
279 /* bitflags for SGI support (sgi_rx iovar) */
280 #define BRCMS_N_SGI_20 0x01
281 #define BRCMS_N_SGI_40 0x02
283 /* defines used by the nrate iovar */
284 /* MSC in use,indicates b0-6 holds an mcs */
285 #define NRATE_MCS_INUSE 0x00000080
287 #define NRATE_RATE_MASK 0x0000007f
288 /* stf mode mask: siso, cdd, stbc, sdm */
289 #define NRATE_STF_MASK 0x0000ff00
291 #define NRATE_STF_SHIFT 8
292 /* bit indicates override both rate & mode */
293 #define NRATE_OVERRIDE 0x80000000
294 /* bit indicate to override mcs only */
295 #define NRATE_OVERRIDE_MCS_ONLY 0x40000000
296 #define NRATE_SGI_MASK 0x00800000 /* sgi mode */
297 #define NRATE_SGI_SHIFT 23 /* sgi mode */
298 #define NRATE_LDPC_CODING 0x00400000 /* bit indicates adv coding in use */
299 #define NRATE_LDPC_SHIFT 22 /* ldpc shift */
301 #define NRATE_STF_SISO 0 /* stf mode SISO */
302 #define NRATE_STF_CDD 1 /* stf mode CDD */
303 #define NRATE_STF_STBC 2 /* stf mode STBC */
304 #define NRATE_STF_SDM 3 /* stf mode SDM */
306 #define MAX_DMA_SEGS 4
308 /* Max # of entries in Tx FIFO based on 4kb page size */
310 /* Max # of entries in Rx FIFO based on 4kb page size */
313 /* try to keep this # rbufs posted to the chip */
314 #define NRXBUFPOST 32
316 /* data msg txq hiwat mark */
317 #define BRCMS_DATAHIWAT 50
319 /* bounded rx loops */
320 #define RXBND 8 /* max # frames to process in brcms_c_recv() */
321 #define TXSBND 8 /* max # tx status to process in wlc_txstatus() */
324 * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
326 #define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
329 * The following table lists the buffer memory allocated to xmt fifos in HW.
330 * the size is in units of 256bytes(one block), total size is HW dependent
331 * ucode has default fifo partition, sw can overwrite if necessary
333 * This is documented in twiki under the topic UcodeTxFifo. Please ensure
334 * the twiki is updated before making changes.
337 /* Starting corerev for the fifo size table */
338 #define XMTFIFOTBL_STARTREV 20
346 /* currently the best mechanism for determining SIFS is the band in use */
347 static u16 get_sifs(struct brcms_band *band)
349 return band->bandtype == BRCM_BAND_5G ? APHY_SIFS_TIME :
355 * Detect Card removed.
356 * Even checking an sbconfig register read will not false trigger when the core
357 * is in reset it breaks CF address mechanism. Accessing gphy phyversion will
358 * cause SB error if aphy is in reset on 4306B0-DB. Need a simple accessible
359 * reg with fixed 0/1 pattern (some platforms return all 0).
360 * If clocks are present, call the sb routine which will figure out if the
363 static bool brcms_deviceremoved(struct brcms_c_info *wlc)
366 return ai_deviceremoved(wlc->hw->sih);
367 return (R_REG(&wlc->hw->regs->maccontrol) &
368 (MCTL_PSM_JMP_0 | MCTL_IHR_EN)) != MCTL_IHR_EN;
371 /* sum the individual fifo tx pending packet counts */
372 static s16 brcms_txpktpendtot(struct brcms_c_info *wlc)
374 return wlc->core->txpktpend[0] + wlc->core->txpktpend[1] +
375 wlc->core->txpktpend[2] + wlc->core->txpktpend[3];
378 static bool brcms_is_mband_unlocked(struct brcms_c_info *wlc)
380 return wlc->pub->_nbands > 1 && !wlc->bandlocked;
383 static int brcms_chspec_bw(u16 chanspec)
385 if (CHSPEC_IS40(chanspec))
387 if (CHSPEC_IS20(chanspec))
393 struct edcf_acparam {
399 const u8 prio2fifo[NUMPRIO] = {
400 TX_AC_BE_FIFO, /* 0 BE AC_BE Best Effort */
401 TX_AC_BK_FIFO, /* 1 BK AC_BK Background */
402 TX_AC_BK_FIFO, /* 2 -- AC_BK Background */
403 TX_AC_BE_FIFO, /* 3 EE AC_BE Best Effort */
404 TX_AC_VI_FIFO, /* 4 CL AC_VI Video */
405 TX_AC_VI_FIFO, /* 5 VI AC_VI Video */
406 TX_AC_VO_FIFO, /* 6 VO AC_VO Voice */
407 TX_AC_VO_FIFO /* 7 NC AC_VO Voice */
411 uint brcm_msg_level =
418 /* TX FIFO number to WME/802.1E Access Category */
419 static const u8 wme_fifo2ac[] = { AC_BK, AC_BE, AC_VI, AC_VO, AC_BE, AC_BE };
421 /* WME/802.1E Access Category to TX FIFO number */
422 static const u8 wme_ac2fifo[] = { 1, 0, 2, 3 };
424 /* 802.1D Priority to precedence queue mapping */
425 const u8 wlc_prio2prec_map[] = {
426 _BRCMS_PREC_BE, /* 0 BE - Best-effort */
427 _BRCMS_PREC_BK, /* 1 BK - Background */
428 _BRCMS_PREC_NONE, /* 2 None = - */
429 _BRCMS_PREC_EE, /* 3 EE - Excellent-effort */
430 _BRCMS_PREC_CL, /* 4 CL - Controlled Load */
431 _BRCMS_PREC_VI, /* 5 Vi - Video */
432 _BRCMS_PREC_VO, /* 6 Vo - Voice */
433 _BRCMS_PREC_NC, /* 7 NC - Network Control */
436 static const u16 xmtfifo_sz[][NFIFO] = {
437 /* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */
438 {20, 192, 192, 21, 17, 5},
439 /* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */
440 {9, 58, 22, 14, 14, 5},
441 /* corerev 22: 5120, 49152, 49152, 5376, 4352, 1280 */
442 {20, 192, 192, 21, 17, 5},
443 /* corerev 23: 5120, 49152, 49152, 5376, 4352, 1280 */
444 {20, 192, 192, 21, 17, 5},
445 /* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */
446 {9, 58, 22, 14, 14, 5},
449 static const u8 acbitmap2maxprio[] = {
450 PRIO_8021D_BE, PRIO_8021D_BE, PRIO_8021D_BK, PRIO_8021D_BK,
451 PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI,
452 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO,
453 PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO
457 static const char * const fifo_names[] = {
458 "AC_BK", "AC_BE", "AC_VI", "AC_VO", "BCMC", "ATIM" };
460 static const char fifo_names[6][0];
464 /* pointer to most recently allocated wl/wlc */
465 static struct brcms_c_info *wlc_info_dbg = (struct brcms_c_info *) (NULL);
468 static void brcms_c_bsscfg_mfree(struct brcms_bss_cfg *cfg)
473 kfree(cfg->current_bss);
477 static void brcms_c_detach_mfree(struct brcms_c_info *wlc)
482 brcms_c_bsscfg_mfree(wlc->bsscfg);
484 kfree(wlc->modulecb);
485 kfree(wlc->default_bss);
486 kfree(wlc->protection);
488 kfree(wlc->bandstate[0]);
489 kfree(wlc->corestate->macstat_snapshot);
490 kfree(wlc->corestate);
491 kfree(wlc->hw->bandstate[0]);
499 static struct brcms_bss_cfg *brcms_c_bsscfg_malloc(uint unit)
501 struct brcms_bss_cfg *cfg;
503 cfg = kzalloc(sizeof(struct brcms_bss_cfg), GFP_ATOMIC);
507 cfg->current_bss = kzalloc(sizeof(struct brcms_bss_info), GFP_ATOMIC);
508 if (cfg->current_bss == NULL)
514 brcms_c_bsscfg_mfree(cfg);
518 static struct brcms_c_info *
519 brcms_c_attach_malloc(uint unit, uint *err, uint devid)
521 struct brcms_c_info *wlc;
523 wlc = kzalloc(sizeof(struct brcms_c_info), GFP_ATOMIC);
529 /* allocate struct brcms_c_pub state structure */
530 wlc->pub = kzalloc(sizeof(struct brcms_pub), GFP_ATOMIC);
531 if (wlc->pub == NULL) {
537 /* allocate struct brcms_hardware state structure */
539 wlc->hw = kzalloc(sizeof(struct brcms_hardware), GFP_ATOMIC);
540 if (wlc->hw == NULL) {
546 wlc->hw->bandstate[0] =
547 kzalloc(sizeof(struct brcms_hw_band) * MAXBANDS, GFP_ATOMIC);
548 if (wlc->hw->bandstate[0] == NULL) {
554 for (i = 1; i < MAXBANDS; i++)
555 wlc->hw->bandstate[i] = (struct brcms_hw_band *)
556 ((unsigned long)wlc->hw->bandstate[0] +
557 (sizeof(struct brcms_hw_band) * i));
561 kzalloc(sizeof(struct modulecb) * BRCMS_MAXMODULES, GFP_ATOMIC);
562 if (wlc->modulecb == NULL) {
567 wlc->default_bss = kzalloc(sizeof(struct brcms_bss_info), GFP_ATOMIC);
568 if (wlc->default_bss == NULL) {
573 wlc->bsscfg = brcms_c_bsscfg_malloc(unit);
574 if (wlc->bsscfg == NULL) {
579 wlc->protection = kzalloc(sizeof(struct brcms_protection),
581 if (wlc->protection == NULL) {
586 wlc->stf = kzalloc(sizeof(struct brcms_stf), GFP_ATOMIC);
587 if (wlc->stf == NULL) {
593 kzalloc(sizeof(struct brcms_band)*MAXBANDS, GFP_ATOMIC);
594 if (wlc->bandstate[0] == NULL) {
600 for (i = 1; i < MAXBANDS; i++)
601 wlc->bandstate[i] = (struct brcms_band *)
602 ((unsigned long)wlc->bandstate[0]
603 + (sizeof(struct brcms_band)*i));
606 wlc->corestate = kzalloc(sizeof(struct brcms_core), GFP_ATOMIC);
607 if (wlc->corestate == NULL) {
612 wlc->corestate->macstat_snapshot =
613 kzalloc(sizeof(struct macstat), GFP_ATOMIC);
614 if (wlc->corestate->macstat_snapshot == NULL) {
622 brcms_c_detach_mfree(wlc);
627 * Update the slot timing for standard 11b/g (20us slots)
628 * or shortslot 11g (9us slots)
629 * The PSM needs to be suspended for this call.
631 static void brcms_b_update_slot_timing(struct brcms_hardware *wlc_hw,
634 struct d11regs __iomem *regs;
639 /* 11g short slot: 11a timing */
640 W_REG(®s->ifs_slot, 0x0207); /* APHY_SLOT_TIME */
641 brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME);
643 /* 11g long slot: 11b timing */
644 W_REG(®s->ifs_slot, 0x0212); /* BPHY_SLOT_TIME */
645 brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME);
649 static void brcms_c_write_inits(struct brcms_hardware *wlc_hw,
650 const struct d11init *inits)
658 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
660 base = (u8 __iomem *)wlc_hw->regs;
662 for (i = 0; inits[i].addr != cpu_to_le16(0xffff); i++) {
663 size = le16_to_cpu(inits[i].size);
664 addr = base + le16_to_cpu(inits[i].addr);
665 value = le32_to_cpu(inits[i].value);
667 W_REG((u16 __iomem *)addr, value);
669 W_REG((u32 __iomem *)addr, value);
675 static void brcms_c_write_mhf(struct brcms_hardware *wlc_hw, u16 *mhfs)
679 M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
683 for (idx = 0; idx < MHFMAX; idx++)
684 brcms_b_write_shm(wlc_hw, addr[idx], mhfs[idx]);
687 static void brcms_c_ucode_bsinit(struct brcms_hardware *wlc_hw)
689 struct wiphy *wiphy = wlc_hw->wlc->wiphy;
690 struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
692 /* init microcode host flags */
693 brcms_c_write_mhf(wlc_hw, wlc_hw->band->mhfs);
695 /* do band-specific ucode IHR, SHM, and SCR inits */
696 if (D11REV_IS(wlc_hw->corerev, 23)) {
697 if (BRCMS_ISNPHY(wlc_hw->band))
698 brcms_c_write_inits(wlc_hw, ucode->d11n0bsinitvals16);
700 wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
701 " %d\n", __func__, wlc_hw->unit,
704 if (D11REV_IS(wlc_hw->corerev, 24)) {
705 if (BRCMS_ISLCNPHY(wlc_hw->band))
706 brcms_c_write_inits(wlc_hw,
707 ucode->d11lcn0bsinitvals24);
709 wiphy_err(wiphy, "%s: wl%d: unsupported phy in"
710 " core rev %d\n", __func__,
711 wlc_hw->unit, wlc_hw->corerev);
713 wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
714 __func__, wlc_hw->unit, wlc_hw->corerev);
719 static void brcms_b_core_phy_clk(struct brcms_hardware *wlc_hw, bool clk)
721 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: clk %d\n", wlc_hw->unit, clk);
723 wlc_hw->phyclk = clk;
725 if (OFF == clk) { /* clear gmode bit, put phy into reset */
727 ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC | SICF_GMODE),
728 (SICF_PRST | SICF_FGC));
730 ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_PRST);
733 } else { /* take phy out of reset */
735 ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_FGC);
737 ai_core_cflags(wlc_hw->sih, (SICF_FGC), 0);
743 /* switch to new band but leave it inactive */
744 static u32 brcms_c_setband_inact(struct brcms_c_info *wlc, uint bandunit)
746 struct brcms_hardware *wlc_hw = wlc->hw;
749 BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
751 WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);
753 /* disable interrupts */
754 macintmask = brcms_intrsoff(wlc->wl);
757 wlc_phy_switch_radio(wlc_hw->band->pi, OFF);
759 brcms_b_core_phy_clk(wlc_hw, OFF);
761 brcms_c_setxband(wlc_hw, bandunit);
766 /* Process received frames */
768 * Return true if more frames need to be processed. false otherwise.
769 * Param 'bound' indicates max. # frames to process before break out.
772 brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound)
775 struct sk_buff *head = NULL;
776 struct sk_buff *tail = NULL;
778 uint bound_limit = bound ? RXBND : -1;
780 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
781 /* gather received frames */
782 while ((p = dma_rx(wlc_hw->di[fifo]))) {
791 /* !give others some time to run! */
792 if (++n >= bound_limit)
796 /* post more rbufs */
797 dma_rxfill(wlc_hw->di[fifo]);
799 /* process each frame */
800 while ((p = head) != NULL) {
801 struct d11rxhdr_le *rxh_le;
802 struct d11rxhdr *rxh;
806 rxh_le = (struct d11rxhdr_le *)p->data;
807 rxh = (struct d11rxhdr *)p->data;
809 /* fixup rx header endianness */
810 rxh->RxFrameSize = le16_to_cpu(rxh_le->RxFrameSize);
811 rxh->PhyRxStatus_0 = le16_to_cpu(rxh_le->PhyRxStatus_0);
812 rxh->PhyRxStatus_1 = le16_to_cpu(rxh_le->PhyRxStatus_1);
813 rxh->PhyRxStatus_2 = le16_to_cpu(rxh_le->PhyRxStatus_2);
814 rxh->PhyRxStatus_3 = le16_to_cpu(rxh_le->PhyRxStatus_3);
815 rxh->PhyRxStatus_4 = le16_to_cpu(rxh_le->PhyRxStatus_4);
816 rxh->PhyRxStatus_5 = le16_to_cpu(rxh_le->PhyRxStatus_5);
817 rxh->RxStatus1 = le16_to_cpu(rxh_le->RxStatus1);
818 rxh->RxStatus2 = le16_to_cpu(rxh_le->RxStatus2);
819 rxh->RxTSFTime = le16_to_cpu(rxh_le->RxTSFTime);
820 rxh->RxChan = le16_to_cpu(rxh_le->RxChan);
822 brcms_c_recv(wlc_hw->wlc, p);
825 return n >= bound_limit;
828 /* process an individual struct tx_status */
830 brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
835 struct scb *scb = NULL;
837 int tx_rts, tx_frame_count, tx_rts_count;
838 uint totlen, supr_status;
840 struct ieee80211_hdr *h;
842 struct ieee80211_tx_info *tx_info;
843 struct ieee80211_tx_rate *txrate;
846 /* discard intermediate indications for ucode with one legitimate case:
847 * e.g. if "useRTS" is set. ucode did a successful rts/cts exchange,
848 * but the subsequent tx of DATA failed. so it will start rts/cts
849 * from the beginning (resetting the rts transmission count)
851 if (!(txs->status & TX_STATUS_AMPDU)
852 && (txs->status & TX_STATUS_INTERMEDIATE)) {
853 wiphy_err(wlc->wiphy, "%s: INTERMEDIATE but not AMPDU\n",
858 queue = txs->frameid & TXFID_QUEUE_MASK;
859 if (queue >= NFIFO) {
864 p = dma_getnexttxp(wlc->hw->di[queue], DMA_RANGE_TRANSMITTED);
868 txh = (struct d11txh *) (p->data);
869 mcl = le16_to_cpu(txh->MacTxControlLow);
872 if (brcm_msg_level & LOG_ERROR_VAL) {
873 wiphy_err(wlc->wiphy, "phyerr 0x%x, rate 0x%x\n",
874 txs->phyerr, txh->MainRates);
875 brcms_c_print_txdesc(txh);
877 brcms_c_print_txstatus(txs);
880 if (txs->frameid != le16_to_cpu(txh->TxFrameID))
882 tx_info = IEEE80211_SKB_CB(p);
883 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
885 if (tx_info->control.sta)
888 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
889 brcms_c_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
893 supr_status = txs->status & TX_STATUS_SUPR_MASK;
894 if (supr_status == TX_STATUS_SUPR_BADCH)
896 "%s: Pkt tx suppressed, possibly channel %d\n",
897 __func__, CHSPEC_CHANNEL(wlc->default_bss->chanspec));
899 tx_rts = le16_to_cpu(txh->MacTxControlLow) & TXC_SENDRTS;
901 (txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT;
903 (txs->status & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT;
905 lastframe = !ieee80211_has_morefrags(h->frame_control);
908 wiphy_err(wlc->wiphy, "Not last frame!\n");
911 * Set information to be consumed by Minstrel ht.
913 * The "fallback limit" is the number of tx attempts a given
914 * MPDU is sent at the "primary" rate. Tx attempts beyond that
915 * limit are sent at the "secondary" rate.
916 * A 'short frame' does not exceed RTS treshold.
918 u16 sfbl, /* Short Frame Rate Fallback Limit */
919 lfbl, /* Long Frame Rate Fallback Limit */
922 if (queue < AC_COUNT) {
923 sfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]],
925 lfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]],
932 txrate = tx_info->status.rates;
933 if (txrate[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
938 ieee80211_tx_info_clear_status(tx_info);
940 if ((tx_frame_count > fbl) && (txrate[1].idx >= 0)) {
942 * rate selection requested a fallback rate
945 txrate[0].count = fbl;
946 txrate[1].count = tx_frame_count - fbl;
949 * rate selection did not request fallback rate, or
952 txrate[0].count = tx_frame_count;
954 * rc80211_minstrel.c:minstrel_tx_status() expects
955 * unused rates to be marked with idx = -1
961 /* clear the rest of the rates */
962 for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) {
967 if (txs->status & TX_STATUS_ACK_RCV)
968 tx_info->flags |= IEEE80211_TX_STAT_ACK;
971 totlen = brcmu_pkttotlen(p);
974 brcms_c_txfifo_complete(wlc, queue, 1);
979 /* remove PLCP & Broadcom tx descriptor header */
980 skb_pull(p, D11_PHY_HDR_LEN);
981 skb_pull(p, D11_TXH_LEN);
982 ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
984 wiphy_err(wlc->wiphy, "%s: Not last frame => not calling "
985 "tx_status\n", __func__);
992 brcmu_pkt_buf_free_skb(p);
998 /* process tx completion events in BMAC
999 * Return true if more tx status need to be processed. false otherwise.
1002 brcms_b_txstatus(struct brcms_hardware *wlc_hw, bool bound, bool *fatal)
1004 bool morepending = false;
1005 struct brcms_c_info *wlc = wlc_hw->wlc;
1006 struct d11regs __iomem *regs;
1007 struct tx_status txstatus, *txs;
1011 * Param 'max_tx_num' indicates max. # tx status to process before
1014 uint max_tx_num = bound ? TXSBND : -1;
1016 BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
1019 regs = wlc_hw->regs;
1022 && (s1 = R_REG(®s->frmtxstatus)) & TXS_V) {
1024 if (s1 == 0xffffffff) {
1025 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n",
1026 wlc_hw->unit, __func__);
1030 s2 = R_REG(®s->frmtxstatus2);
1032 txs->status = s1 & TXS_STATUS_MASK;
1033 txs->frameid = (s1 & TXS_FID_MASK) >> TXS_FID_SHIFT;
1034 txs->sequence = s2 & TXS_SEQ_MASK;
1035 txs->phyerr = (s2 & TXS_PTX_MASK) >> TXS_PTX_SHIFT;
1036 txs->lasttxtime = 0;
1038 *fatal = brcms_c_dotxstatus(wlc_hw->wlc, txs);
1040 /* !give others some time to run! */
1041 if (++n >= max_tx_num)
1048 if (n >= max_tx_num)
1051 if (!pktq_empty(&wlc->pkt_queue->q))
1052 brcms_c_send_q(wlc);
1057 /* second-level interrupt processing
1058 * Return true if another dpc needs to be re-scheduled. false otherwise.
1059 * Param 'bounded' indicates if applicable loops should be bounded.
1061 bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
1064 struct brcms_hardware *wlc_hw = wlc->hw;
1065 struct d11regs __iomem *regs = wlc_hw->regs;
1066 struct wiphy *wiphy = wlc->wiphy;
1068 if (brcms_deviceremoved(wlc)) {
1069 wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
1071 brcms_down(wlc->wl);
1075 /* grab and clear the saved software intstatus bits */
1076 macintstatus = wlc->macintstatus;
1077 wlc->macintstatus = 0;
1079 BCMMSG(wlc->wiphy, "wl%d: macintstatus 0x%x\n",
1080 wlc_hw->unit, macintstatus);
1082 WARN_ON(macintstatus & MI_PRQ); /* PRQ Interrupt in non-MBSS */
1085 if (macintstatus & MI_TFS) {
1087 if (brcms_b_txstatus(wlc->hw, bounded, &fatal))
1088 wlc->macintstatus |= MI_TFS;
1090 wiphy_err(wiphy, "MI_TFS: fatal\n");
1095 if (macintstatus & (MI_TBTT | MI_DTIM_TBTT))
1098 /* ATIM window end */
1099 if (macintstatus & MI_ATIMWINEND) {
1100 BCMMSG(wlc->wiphy, "end of ATIM window\n");
1101 OR_REG(®s->maccommand, wlc->qvalid);
1106 * received data or control frame, MI_DMAINT is
1107 * indication of RX_FIFO interrupt
1109 if (macintstatus & MI_DMAINT)
1110 if (brcms_b_recv(wlc_hw, RX_FIFO, bounded))
1111 wlc->macintstatus |= MI_DMAINT;
1113 /* noise sample collected */
1114 if (macintstatus & MI_BG_NOISE)
1115 wlc_phy_noise_sample_intr(wlc_hw->band->pi);
1117 if (macintstatus & MI_GP0) {
1118 wiphy_err(wiphy, "wl%d: PSM microcode watchdog fired at %d "
1119 "(seconds). Resetting.\n", wlc_hw->unit, wlc_hw->now);
1121 printk_once("%s : PSM Watchdog, chipid 0x%x, chiprev 0x%x\n",
1122 __func__, wlc_hw->sih->chip,
1123 wlc_hw->sih->chiprev);
1125 brcms_init(wlc->wl);
1128 /* gptimer timeout */
1129 if (macintstatus & MI_TO)
1130 W_REG(®s->gptimer, 0);
1132 if (macintstatus & MI_RFDISABLE) {
1133 BCMMSG(wlc->wiphy, "wl%d: BMAC Detected a change on the"
1134 " RF Disable Input\n", wlc_hw->unit);
1135 brcms_rfkill_set_hw_state(wlc->wl);
1138 /* send any enq'd tx packets. Just makes sure to jump start tx */
1139 if (!pktq_empty(&wlc->pkt_queue->q))
1140 brcms_c_send_q(wlc);
1142 /* it isn't done and needs to be resched if macintstatus is non-zero */
1143 return wlc->macintstatus != 0;
1146 brcms_init(wlc->wl);
1147 return wlc->macintstatus != 0;
1150 /* set initial host flags value */
1152 brcms_c_mhfdef(struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init)
1154 struct brcms_hardware *wlc_hw = wlc->hw;
1156 memset(mhfs, 0, MHFMAX * sizeof(u16));
1158 mhfs[MHF2] |= mhf2_init;
1160 /* prohibit use of slowclock on multifunction boards */
1161 if (wlc_hw->boardflags & BFL_NOPLLDOWN)
1162 mhfs[MHF1] |= MHF1_FORCEFASTCLK;
1164 if (BRCMS_ISNPHY(wlc_hw->band) && NREV_LT(wlc_hw->band->phyrev, 2)) {
1165 mhfs[MHF2] |= MHF2_NPHY40MHZ_WAR;
1166 mhfs[MHF1] |= MHF1_IQSWAP_WAR;
1170 static struct dma64regs __iomem *
1171 dmareg(struct brcms_hardware *hw, uint direction, uint fifonum)
1173 if (direction == DMA_TX)
1174 return &(hw->regs->fifo64regs[fifonum].dmaxmt);
1175 return &(hw->regs->fifo64regs[fifonum].dmarcv);
1178 static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme)
1183 * ucode host flag 2 needed for pio mode, independent of band and fifo
1186 struct brcms_hardware *wlc_hw = wlc->hw;
1187 uint unit = wlc_hw->unit;
1188 struct wiphy *wiphy = wlc->wiphy;
1190 /* name and offsets for dma_attach */
1191 snprintf(name, sizeof(name), "wl%d", unit);
1193 if (wlc_hw->di[0] == NULL) { /* Init FIFOs */
1194 int dma_attach_err = 0;
1198 * TX: TX_AC_BK_FIFO (TX AC Background data packets)
1199 * RX: RX_FIFO (RX data packets)
1201 wlc_hw->di[0] = dma_attach(name, wlc_hw->sih,
1202 (wme ? dmareg(wlc_hw, DMA_TX, 0) :
1203 NULL), dmareg(wlc_hw, DMA_RX, 0),
1204 (wme ? NTXD : 0), NRXD,
1205 RXBUFSZ, -1, NRXBUFPOST,
1206 BRCMS_HWRXOFF, &brcm_msg_level);
1207 dma_attach_err |= (NULL == wlc_hw->di[0]);
1211 * TX: TX_AC_BE_FIFO (TX AC Best-Effort data packets)
1212 * (legacy) TX_DATA_FIFO (TX data packets)
1215 wlc_hw->di[1] = dma_attach(name, wlc_hw->sih,
1216 dmareg(wlc_hw, DMA_TX, 1), NULL,
1217 NTXD, 0, 0, -1, 0, 0,
1219 dma_attach_err |= (NULL == wlc_hw->di[1]);
1223 * TX: TX_AC_VI_FIFO (TX AC Video data packets)
1226 wlc_hw->di[2] = dma_attach(name, wlc_hw->sih,
1227 dmareg(wlc_hw, DMA_TX, 2), NULL,
1228 NTXD, 0, 0, -1, 0, 0,
1230 dma_attach_err |= (NULL == wlc_hw->di[2]);
1233 * TX: TX_AC_VO_FIFO (TX AC Voice data packets)
1234 * (legacy) TX_CTL_FIFO (TX control & mgmt packets)
1236 wlc_hw->di[3] = dma_attach(name, wlc_hw->sih,
1237 dmareg(wlc_hw, DMA_TX, 3),
1238 NULL, NTXD, 0, 0, -1,
1239 0, 0, &brcm_msg_level);
1240 dma_attach_err |= (NULL == wlc_hw->di[3]);
1241 /* Cleaner to leave this as if with AP defined */
1243 if (dma_attach_err) {
1244 wiphy_err(wiphy, "wl%d: wlc_attach: dma_attach failed"
1249 /* get pointer to dma engine tx flow control variable */
1250 for (i = 0; i < NFIFO; i++)
1252 wlc_hw->txavail[i] =
1253 (uint *) dma_getvar(wlc_hw->di[i],
1257 /* initial ucode host flags */
1258 brcms_c_mhfdef(wlc, wlc_hw->band->mhfs, pio_mhf2);
1263 static void brcms_b_detach_dmapio(struct brcms_hardware *wlc_hw)
1267 for (j = 0; j < NFIFO; j++) {
1268 if (wlc_hw->di[j]) {
1269 dma_detach(wlc_hw->di[j]);
1270 wlc_hw->di[j] = NULL;
1276 * Initialize brcms_c_info default values ...
1277 * may get overrides later in this function
1278 * BMAC_NOTES, move low out and resolve the dangling ones
1280 static void brcms_b_info_init(struct brcms_hardware *wlc_hw)
1282 struct brcms_c_info *wlc = wlc_hw->wlc;
1284 /* set default sw macintmask value */
1285 wlc->defmacintmask = DEF_MACINTMASK;
1287 /* various 802.11g modes */
1288 wlc_hw->shortslot = false;
1290 wlc_hw->SFBL = RETRY_SHORT_FB;
1291 wlc_hw->LFBL = RETRY_LONG_FB;
1293 /* default mac retry limits */
1294 wlc_hw->SRL = RETRY_SHORT_DEF;
1295 wlc_hw->LRL = RETRY_LONG_DEF;
1296 wlc_hw->chanspec = ch20mhz_chspec(1);
1299 static void brcms_b_wait_for_wake(struct brcms_hardware *wlc_hw)
1301 /* delay before first read of ucode state */
1304 /* wait until ucode is no longer asleep */
1305 SPINWAIT((brcms_b_read_shm(wlc_hw, M_UCODE_DBGST) ==
1306 DBGST_ASLEEP), wlc_hw->wlc->fastpwrup_dly);
1309 /* control chip clock to save power, enable dynamic clock or force fast clock */
1310 static void brcms_b_clkctl_clk(struct brcms_hardware *wlc_hw, uint mode)
1312 if (wlc_hw->sih->cccaps & CC_CAP_PMU) {
1313 /* new chips with PMU, CCS_FORCEHT will distribute the HT clock
1314 * on backplane, but mac core will still run on ALP(not HT) when
1315 * it enters powersave mode, which means the FCA bit may not be
1316 * set. Should wakeup mac if driver wants it to run on HT.
1320 if (mode == CLK_FAST) {
1321 OR_REG(&wlc_hw->regs->clk_ctl_st,
1328 clk_ctl_st) & CCS_HTAVAIL) == 0),
1329 PMU_MAX_TRANSITION_DLY);
1332 clk_ctl_st) & CCS_HTAVAIL));
1334 if ((wlc_hw->sih->pmurev == 0) &&
1337 clk_ctl_st) & (CCS_FORCEHT | CCS_HTAREQ)))
1340 clk_ctl_st) & CCS_HTAVAIL)
1342 PMU_MAX_TRANSITION_DLY);
1343 AND_REG(&wlc_hw->regs->clk_ctl_st,
1347 wlc_hw->forcefastclk = (mode == CLK_FAST);
1350 /* old chips w/o PMU, force HT through cc,
1351 * then use FCA to verify mac is running fast clock
1354 wlc_hw->forcefastclk = ai_clkctl_cc(wlc_hw->sih, mode);
1356 /* check fast clock is available (if core is not in reset) */
1357 if (wlc_hw->forcefastclk && wlc_hw->clk)
1358 WARN_ON(!(ai_core_sflags(wlc_hw->sih, 0, 0) &
1362 * keep the ucode wake bit on if forcefastclk is on since we
1363 * do not want ucode to put us back to slow clock when it dozes
1364 * for PM mode. Code below matches the wake override bit with
1365 * current forcefastclk state. Only setting bit in wake_override
1366 * instead of waking ucode immediately since old code had this
1367 * behavior. Older code set wlc->forcefastclk but only had the
1368 * wake happen if the wakup_ucode work (protected by an up
1369 * check) was executed just below.
1371 if (wlc_hw->forcefastclk)
1372 mboolset(wlc_hw->wake_override,
1373 BRCMS_WAKE_OVERRIDE_FORCEFAST);
1375 mboolclr(wlc_hw->wake_override,
1376 BRCMS_WAKE_OVERRIDE_FORCEFAST);
1380 /* set or clear ucode host flag bits
1381 * it has an optimization for no-change write
1382 * it only writes through shared memory when the core has clock;
1383 * pre-CLK changes should use wlc_write_mhf to get around the optimization
1386 * bands values are: BRCM_BAND_AUTO <--- Current band only
1387 * BRCM_BAND_5G <--- 5G band only
1388 * BRCM_BAND_2G <--- 2G band only
1389 * BRCM_BAND_ALL <--- All bands
1392 brcms_b_mhf(struct brcms_hardware *wlc_hw, u8 idx, u16 mask, u16 val,
1396 u16 addr[MHFMAX] = {
1397 M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
1400 struct brcms_hw_band *band;
1402 if ((val & ~mask) || idx >= MHFMAX)
1403 return; /* error condition */
1406 /* Current band only or all bands,
1407 * then set the band to current band
1409 case BRCM_BAND_AUTO:
1411 band = wlc_hw->band;
1414 band = wlc_hw->bandstate[BAND_5G_INDEX];
1417 band = wlc_hw->bandstate[BAND_2G_INDEX];
1420 band = NULL; /* error condition */
1424 save = band->mhfs[idx];
1425 band->mhfs[idx] = (band->mhfs[idx] & ~mask) | val;
1427 /* optimization: only write through if changed, and
1428 * changed band is the current band
1430 if (wlc_hw->clk && (band->mhfs[idx] != save)
1431 && (band == wlc_hw->band))
1432 brcms_b_write_shm(wlc_hw, addr[idx],
1433 (u16) band->mhfs[idx]);
1436 if (bands == BRCM_BAND_ALL) {
1437 wlc_hw->bandstate[0]->mhfs[idx] =
1438 (wlc_hw->bandstate[0]->mhfs[idx] & ~mask) | val;
1439 wlc_hw->bandstate[1]->mhfs[idx] =
1440 (wlc_hw->bandstate[1]->mhfs[idx] & ~mask) | val;
1444 /* set the maccontrol register to desired reset state and
1445 * initialize the sw cache of the register
1447 static void brcms_c_mctrl_reset(struct brcms_hardware *wlc_hw)
1449 /* IHR accesses are always enabled, PSM disabled, HPS off and WAKE on */
1450 wlc_hw->maccontrol = 0;
1451 wlc_hw->suspended_fifos = 0;
1452 wlc_hw->wake_override = 0;
1453 wlc_hw->mute_override = 0;
1454 brcms_b_mctrl(wlc_hw, ~0, MCTL_IHR_EN | MCTL_WAKE);
1458 * write the software state of maccontrol and
1459 * overrides to the maccontrol register
1461 static void brcms_c_mctrl_write(struct brcms_hardware *wlc_hw)
1463 u32 maccontrol = wlc_hw->maccontrol;
1465 /* OR in the wake bit if overridden */
1466 if (wlc_hw->wake_override)
1467 maccontrol |= MCTL_WAKE;
1469 /* set AP and INFRA bits for mute if needed */
1470 if (wlc_hw->mute_override) {
1471 maccontrol &= ~(MCTL_AP);
1472 maccontrol |= MCTL_INFRA;
1475 W_REG(&wlc_hw->regs->maccontrol, maccontrol);
1478 /* set or clear maccontrol bits */
1479 void brcms_b_mctrl(struct brcms_hardware *wlc_hw, u32 mask, u32 val)
1485 return; /* error condition */
1486 maccontrol = wlc_hw->maccontrol;
1487 new_maccontrol = (maccontrol & ~mask) | val;
1489 /* if the new maccontrol value is the same as the old, nothing to do */
1490 if (new_maccontrol == maccontrol)
1493 /* something changed, cache the new value */
1494 wlc_hw->maccontrol = new_maccontrol;
1496 /* write the new values with overrides applied */
1497 brcms_c_mctrl_write(wlc_hw);
1500 void brcms_c_ucode_wake_override_set(struct brcms_hardware *wlc_hw,
1503 if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE)) {
1504 mboolset(wlc_hw->wake_override, override_bit);
1508 mboolset(wlc_hw->wake_override, override_bit);
1510 brcms_c_mctrl_write(wlc_hw);
1511 brcms_b_wait_for_wake(wlc_hw);
1514 void brcms_c_ucode_wake_override_clear(struct brcms_hardware *wlc_hw,
1517 mboolclr(wlc_hw->wake_override, override_bit);
1519 if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE))
1522 brcms_c_mctrl_write(wlc_hw);
1525 /* When driver needs ucode to stop beaconing, it has to make sure that
1526 * MCTL_AP is clear and MCTL_INFRA is set
1527 * Mode MCTL_AP MCTL_INFRA
1529 * STA 0 1 <--- This will ensure no beacons
1532 static void brcms_c_ucode_mute_override_set(struct brcms_hardware *wlc_hw)
1534 wlc_hw->mute_override = 1;
1536 /* if maccontrol already has AP == 0 and INFRA == 1 without this
1537 * override, then there is no change to write
1539 if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
1542 brcms_c_mctrl_write(wlc_hw);
1545 /* Clear the override on AP and INFRA bits */
1546 static void brcms_c_ucode_mute_override_clear(struct brcms_hardware *wlc_hw)
1548 if (wlc_hw->mute_override == 0)
1551 wlc_hw->mute_override = 0;
1553 /* if maccontrol already has AP == 0 and INFRA == 1 without this
1554 * override, then there is no change to write
1556 if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
1559 brcms_c_mctrl_write(wlc_hw);
1563 * Write a MAC address to the given match reg offset in the RXE match engine.
1566 brcms_b_set_addrmatch(struct brcms_hardware *wlc_hw, int match_reg_offset,
1569 struct d11regs __iomem *regs;
1574 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: brcms_b_set_addrmatch\n",
1577 regs = wlc_hw->regs;
1578 mac_l = addr[0] | (addr[1] << 8);
1579 mac_m = addr[2] | (addr[3] << 8);
1580 mac_h = addr[4] | (addr[5] << 8);
1582 /* enter the MAC addr into the RXE match registers */
1583 W_REG(®s->rcm_ctl, RCM_INC_DATA | match_reg_offset);
1584 W_REG(®s->rcm_mat_data, mac_l);
1585 W_REG(®s->rcm_mat_data, mac_m);
1586 W_REG(®s->rcm_mat_data, mac_h);
1591 brcms_b_write_template_ram(struct brcms_hardware *wlc_hw, int offset, int len,
1594 struct d11regs __iomem *regs;
1599 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
1601 regs = wlc_hw->regs;
1602 W_REG(®s->tplatewrptr, offset);
1604 /* if MCTL_BIGEND bit set in mac control register,
1605 * the chip swaps data in fifo, as well as data in
1608 be_bit = (R_REG(®s->maccontrol) & MCTL_BIGEND) != 0;
1611 memcpy(&word, buf, sizeof(u32));
1614 word_be = cpu_to_be32(word);
1615 word = *(u32 *)&word_be;
1617 word_le = cpu_to_le32(word);
1618 word = *(u32 *)&word_le;
1621 W_REG(®s->tplatewrdata, word);
1623 buf = (u8 *) buf + sizeof(u32);
1628 static void brcms_b_set_cwmin(struct brcms_hardware *wlc_hw, u16 newmin)
1630 wlc_hw->band->CWmin = newmin;
1632 W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMIN);
1633 (void)R_REG(&wlc_hw->regs->objaddr);
1634 W_REG(&wlc_hw->regs->objdata, newmin);
1637 static void brcms_b_set_cwmax(struct brcms_hardware *wlc_hw, u16 newmax)
1639 wlc_hw->band->CWmax = newmax;
1641 W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMAX);
1642 (void)R_REG(&wlc_hw->regs->objaddr);
1643 W_REG(&wlc_hw->regs->objdata, newmax);
1646 void brcms_b_bw_set(struct brcms_hardware *wlc_hw, u16 bw)
1650 /* request FAST clock if not on */
1651 fastclk = wlc_hw->forcefastclk;
1653 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
1655 wlc_phy_bw_state_set(wlc_hw->band->pi, bw);
1657 brcms_b_phy_reset(wlc_hw);
1658 wlc_phy_init(wlc_hw->band->pi, wlc_phy_chanspec_get(wlc_hw->band->pi));
1660 /* restore the clk */
1662 brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
1665 static void brcms_b_upd_synthpu(struct brcms_hardware *wlc_hw)
1668 struct brcms_c_info *wlc = wlc_hw->wlc;
1669 /* update SYNTHPU_DLY */
1671 if (BRCMS_ISLCNPHY(wlc->band))
1672 v = SYNTHPU_DLY_LPPHY_US;
1673 else if (BRCMS_ISNPHY(wlc->band) && (NREV_GE(wlc->band->phyrev, 3)))
1674 v = SYNTHPU_DLY_NPHY_US;
1676 v = SYNTHPU_DLY_BPHY_US;
1678 brcms_b_write_shm(wlc_hw, M_SYNTHPU_DLY, v);
1681 static void brcms_c_ucode_txant_set(struct brcms_hardware *wlc_hw)
1684 u16 phytxant = wlc_hw->bmac_phytxant;
1685 u16 mask = PHY_TXC_ANT_MASK;
1687 /* set the Probe Response frame phy control word */
1688 phyctl = brcms_b_read_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS);
1689 phyctl = (phyctl & ~mask) | phytxant;
1690 brcms_b_write_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS, phyctl);
1692 /* set the Response (ACK/CTS) frame phy control word */
1693 phyctl = brcms_b_read_shm(wlc_hw, M_RSP_PCTLWD);
1694 phyctl = (phyctl & ~mask) | phytxant;
1695 brcms_b_write_shm(wlc_hw, M_RSP_PCTLWD, phyctl);
1698 static u16 brcms_b_ofdm_ratetable_offset(struct brcms_hardware *wlc_hw,
1703 struct plcp_signal_rate_lookup {
1707 /* OFDM RATE sub-field of PLCP SIGNAL field, per 802.11 sec 17.3.4.1 */
1708 const struct plcp_signal_rate_lookup rate_lookup[] = {
1709 {BRCM_RATE_6M, 0xB},
1710 {BRCM_RATE_9M, 0xF},
1711 {BRCM_RATE_12M, 0xA},
1712 {BRCM_RATE_18M, 0xE},
1713 {BRCM_RATE_24M, 0x9},
1714 {BRCM_RATE_36M, 0xD},
1715 {BRCM_RATE_48M, 0x8},
1716 {BRCM_RATE_54M, 0xC}
1719 for (i = 0; i < ARRAY_SIZE(rate_lookup); i++) {
1720 if (rate == rate_lookup[i].rate) {
1721 plcp_rate = rate_lookup[i].signal_rate;
1726 /* Find the SHM pointer to the rate table entry by looking in the
1729 return 2 * brcms_b_read_shm(wlc_hw, M_RT_DIRMAP_A + (plcp_rate * 2));
1732 static void brcms_upd_ofdm_pctl1_table(struct brcms_hardware *wlc_hw)
1736 BRCM_RATE_6M, BRCM_RATE_9M, BRCM_RATE_12M, BRCM_RATE_18M,
1737 BRCM_RATE_24M, BRCM_RATE_36M, BRCM_RATE_48M, BRCM_RATE_54M
1743 if (!BRCMS_PHY_11N_CAP(wlc_hw->band))
1746 /* walk the phy rate table and update the entries */
1747 for (i = 0; i < ARRAY_SIZE(rates); i++) {
1750 entry_ptr = brcms_b_ofdm_ratetable_offset(wlc_hw, rate);
1752 /* read the SHM Rate Table entry OFDM PCTL1 values */
1754 brcms_b_read_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS);
1756 /* modify the value */
1757 pctl1 &= ~PHY_TXC1_MODE_MASK;
1758 pctl1 |= (wlc_hw->hw_stf_ss_opmode << PHY_TXC1_MODE_SHIFT);
1760 /* Update the SHM Rate Table entry OFDM PCTL1 values */
1761 brcms_b_write_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS,
1766 /* band-specific init */
1767 static void brcms_b_bsinit(struct brcms_c_info *wlc, u16 chanspec)
1769 struct brcms_hardware *wlc_hw = wlc->hw;
1771 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
1772 wlc_hw->band->bandunit);
1774 brcms_c_ucode_bsinit(wlc_hw);
1776 wlc_phy_init(wlc_hw->band->pi, chanspec);
1778 brcms_c_ucode_txant_set(wlc_hw);
1781 * cwmin is band-specific, update hardware
1782 * with value for current band
1784 brcms_b_set_cwmin(wlc_hw, wlc_hw->band->CWmin);
1785 brcms_b_set_cwmax(wlc_hw, wlc_hw->band->CWmax);
1787 brcms_b_update_slot_timing(wlc_hw,
1788 wlc_hw->band->bandtype == BRCM_BAND_5G ?
1789 true : wlc_hw->shortslot);
1791 /* write phytype and phyvers */
1792 brcms_b_write_shm(wlc_hw, M_PHYTYPE, (u16) wlc_hw->band->phytype);
1793 brcms_b_write_shm(wlc_hw, M_PHYVER, (u16) wlc_hw->band->phyrev);
1796 * initialize the txphyctl1 rate table since
1797 * shmem is shared between bands
1799 brcms_upd_ofdm_pctl1_table(wlc_hw);
1801 brcms_b_upd_synthpu(wlc_hw);
1804 /* Perform a soft reset of the PHY PLL */
1805 void brcms_b_core_phypll_reset(struct brcms_hardware *wlc_hw)
1807 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
1809 ai_corereg(wlc_hw->sih, SI_CC_IDX,
1810 offsetof(struct chipcregs, chipcontrol_addr), ~0, 0);
1812 ai_corereg(wlc_hw->sih, SI_CC_IDX,
1813 offsetof(struct chipcregs, chipcontrol_data), 0x4, 0);
1815 ai_corereg(wlc_hw->sih, SI_CC_IDX,
1816 offsetof(struct chipcregs, chipcontrol_data), 0x4, 4);
1818 ai_corereg(wlc_hw->sih, SI_CC_IDX,
1819 offsetof(struct chipcregs, chipcontrol_data), 0x4, 0);
1823 /* light way to turn on phy clock without reset for NPHY only
1824 * refer to brcms_b_core_phy_clk for full version
1826 void brcms_b_phyclk_fgc(struct brcms_hardware *wlc_hw, bool clk)
1828 /* support(necessary for NPHY and HYPHY) only */
1829 if (!BRCMS_ISNPHY(wlc_hw->band))
1833 ai_core_cflags(wlc_hw->sih, SICF_FGC, SICF_FGC);
1835 ai_core_cflags(wlc_hw->sih, SICF_FGC, 0);
1839 void brcms_b_macphyclk_set(struct brcms_hardware *wlc_hw, bool clk)
1842 ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, SICF_MPCLKE);
1844 ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, 0);
1847 void brcms_b_phy_reset(struct brcms_hardware *wlc_hw)
1849 struct brcms_phy_pub *pih = wlc_hw->band->pi;
1851 bool phy_in_reset = false;
1853 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
1858 phy_bw_clkbits = wlc_phy_clk_bwbits(wlc_hw->band->pi);
1860 /* Specific reset sequence required for NPHY rev 3 and 4 */
1861 if (BRCMS_ISNPHY(wlc_hw->band) && NREV_GE(wlc_hw->band->phyrev, 3) &&
1862 NREV_LE(wlc_hw->band->phyrev, 4)) {
1863 /* Set the PHY bandwidth */
1864 ai_core_cflags(wlc_hw->sih, SICF_BWMASK, phy_bw_clkbits);
1868 /* Perform a soft reset of the PHY PLL */
1869 brcms_b_core_phypll_reset(wlc_hw);
1872 ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_PCLKE),
1873 (SICF_PRST | SICF_PCLKE));
1874 phy_in_reset = true;
1876 ai_core_cflags(wlc_hw->sih,
1877 (SICF_PRST | SICF_PCLKE | SICF_BWMASK),
1878 (SICF_PRST | SICF_PCLKE | phy_bw_clkbits));
1882 brcms_b_core_phy_clk(wlc_hw, ON);
1885 wlc_phy_anacore(pih, ON);
1888 /* switch to and initialize new band */
1889 static void brcms_b_setband(struct brcms_hardware *wlc_hw, uint bandunit,
1891 struct brcms_c_info *wlc = wlc_hw->wlc;
1894 /* Enable the d11 core before accessing it */
1895 if (!ai_iscoreup(wlc_hw->sih)) {
1896 ai_core_reset(wlc_hw->sih, 0, 0);
1897 brcms_c_mctrl_reset(wlc_hw);
1900 macintmask = brcms_c_setband_inact(wlc, bandunit);
1905 brcms_b_core_phy_clk(wlc_hw, ON);
1907 /* band-specific initializations */
1908 brcms_b_bsinit(wlc, chanspec);
1911 * If there are any pending software interrupt bits,
1912 * then replace these with a harmless nonzero value
1913 * so brcms_c_dpc() will re-enable interrupts when done.
1915 if (wlc->macintstatus)
1916 wlc->macintstatus = MI_DMAINT;
1918 /* restore macintmask */
1919 brcms_intrsrestore(wlc->wl, macintmask);
1921 /* ucode should still be suspended.. */
1922 WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);
1925 /* low-level band switch utility routine */
1926 void brcms_c_setxband(struct brcms_hardware *wlc_hw, uint bandunit)
1928 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
1931 wlc_hw->band = wlc_hw->bandstate[bandunit];
1935 * until we eliminate need for wlc->band refs in low level code
1937 wlc_hw->wlc->band = wlc_hw->wlc->bandstate[bandunit];
1939 /* set gmode core flag */
1940 if (wlc_hw->sbclk && !wlc_hw->noreset)
1941 ai_core_cflags(wlc_hw->sih, SICF_GMODE,
1942 ((bandunit == 0) ? SICF_GMODE : 0));
1945 static bool brcms_c_isgoodchip(struct brcms_hardware *wlc_hw)
1948 /* reject unsupported corerev */
1949 if (!CONF_HAS(D11CONF, wlc_hw->corerev)) {
1950 wiphy_err(wlc_hw->wlc->wiphy, "unsupported core rev %d\n",
1958 /* Validate some board info parameters */
1959 static bool brcms_c_validboardtype(struct brcms_hardware *wlc_hw)
1961 uint boardrev = wlc_hw->boardrev;
1963 /* 4 bits each for board type, major, minor, and tiny version */
1964 uint brt = (boardrev & 0xf000) >> 12;
1965 uint b0 = (boardrev & 0xf00) >> 8;
1966 uint b1 = (boardrev & 0xf0) >> 4;
1967 uint b2 = boardrev & 0xf;
1969 /* voards from other vendors are always considered valid */
1970 if (wlc_hw->sih->boardvendor != PCI_VENDOR_ID_BROADCOM)
1973 /* do some boardrev sanity checks when boardvendor is Broadcom */
1977 if (boardrev <= 0xff)
1980 if ((brt > 2) || (brt == 0) || (b0 > 9) || (b0 == 0) || (b1 > 9)
1987 static char *brcms_c_get_macaddr(struct brcms_hardware *wlc_hw)
1989 const char *varname = "macaddr";
1992 /* If macaddr exists, use it (Sromrev4, CIS, ...). */
1993 macaddr = getvar(wlc_hw->sih, varname);
1994 if (macaddr != NULL)
1997 if (wlc_hw->_nbands > 1)
1998 varname = "et1macaddr";
2000 varname = "il0macaddr";
2002 macaddr = getvar(wlc_hw->sih, varname);
2003 if (macaddr == NULL)
2004 wiphy_err(wlc_hw->wlc->wiphy, "wl%d: wlc_get_macaddr: macaddr "
2005 "getvar(%s) not found\n", wlc_hw->unit, varname);
2010 /* power both the pll and external oscillator on/off */
2011 static void brcms_b_xtal(struct brcms_hardware *wlc_hw, bool want)
2013 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: want %d\n", wlc_hw->unit, want);
2016 * dont power down if plldown is false or
2017 * we must poll hw radio disable
2019 if (!want && wlc_hw->pllreq)
2023 ai_clkctl_xtal(wlc_hw->sih, XTAL | PLL, want);
2025 wlc_hw->sbclk = want;
2026 if (!wlc_hw->sbclk) {
2027 wlc_hw->clk = false;
2028 if (wlc_hw->band && wlc_hw->band->pi)
2029 wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
2034 * Return true if radio is disabled, otherwise false.
2035 * hw radio disable signal is an external pin, users activate it asynchronously
2036 * this function could be called when driver is down and w/o clock
2037 * it operates on different registers depending on corerev and boardflag.
2039 static bool brcms_b_radio_read_hwdisabled(struct brcms_hardware *wlc_hw)
2042 u32 resetbits = 0, flags = 0;
2044 xtal = wlc_hw->sbclk;
2046 brcms_b_xtal(wlc_hw, ON);
2048 /* may need to take core out of reset first */
2052 * mac no longer enables phyclk automatically when driver
2053 * accesses phyreg throughput mac. This can be skipped since
2054 * only mac reg is accessed below
2056 flags |= SICF_PCLKE;
2059 * AI chip doesn't restore bar0win2 on
2060 * hibernation/resume, need sw fixup
2062 if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
2063 (wlc_hw->sih->chip == BCM43225_CHIP_ID))
2064 wlc_hw->regs = (struct d11regs __iomem *)
2065 ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
2066 ai_core_reset(wlc_hw->sih, flags, resetbits);
2067 brcms_c_mctrl_reset(wlc_hw);
2070 v = ((R_REG(&wlc_hw->regs->phydebug) & PDBG_RFD) != 0);
2072 /* put core back into reset */
2074 ai_core_disable(wlc_hw->sih, 0);
2077 brcms_b_xtal(wlc_hw, OFF);
2082 static bool wlc_dma_rxreset(struct brcms_hardware *wlc_hw, uint fifo)
2084 struct dma_pub *di = wlc_hw->di[fifo];
2085 return dma_rxreset(di);
2089 * ensure fask clock during reset
2091 * reset d11(out of reset)
2092 * reset phy(out of reset)
2093 * clear software macintstatus for fresh new start
2094 * one testing hack wlc_hw->noreset will bypass the d11/phy reset
2096 void brcms_b_corereset(struct brcms_hardware *wlc_hw, u32 flags)
2098 struct d11regs __iomem *regs;
2103 if (flags == BRCMS_USE_COREFLAGS)
2104 flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0);
2106 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
2108 regs = wlc_hw->regs;
2110 /* request FAST clock if not on */
2111 fastclk = wlc_hw->forcefastclk;
2113 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
2115 /* reset the dma engines except first time thru */
2116 if (ai_iscoreup(wlc_hw->sih)) {
2117 for (i = 0; i < NFIFO; i++)
2118 if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i])))
2119 wiphy_err(wlc_hw->wlc->wiphy, "wl%d: %s: "
2120 "dma_txreset[%d]: cannot stop dma\n",
2121 wlc_hw->unit, __func__, i);
2123 if ((wlc_hw->di[RX_FIFO])
2124 && (!wlc_dma_rxreset(wlc_hw, RX_FIFO)))
2125 wiphy_err(wlc_hw->wlc->wiphy, "wl%d: %s: dma_rxreset"
2126 "[%d]: cannot stop dma\n",
2127 wlc_hw->unit, __func__, RX_FIFO);
2129 /* if noreset, just stop the psm and return */
2130 if (wlc_hw->noreset) {
2131 wlc_hw->wlc->macintstatus = 0; /* skip wl_dpc after down */
2132 brcms_b_mctrl(wlc_hw, MCTL_PSM_RUN | MCTL_EN_MAC, 0);
2137 * mac no longer enables phyclk automatically when driver accesses
2138 * phyreg throughput mac, AND phy_reset is skipped at early stage when
2139 * band->pi is invalid. need to enable PHY CLK
2141 flags |= SICF_PCLKE;
2145 * In chips with PMU, the fastclk request goes through d11 core
2146 * reg 0x1e0, which is cleared by the core_reset. have to re-request it.
2148 * This adds some delay and we can optimize it by also requesting
2149 * fastclk through chipcommon during this period if necessary. But
2150 * that has to work coordinate with other driver like mips/arm since
2151 * they may touch chipcommon as well.
2153 wlc_hw->clk = false;
2154 ai_core_reset(wlc_hw->sih, flags, resetbits);
2156 if (wlc_hw->band && wlc_hw->band->pi)
2157 wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, true);
2159 brcms_c_mctrl_reset(wlc_hw);
2161 if (wlc_hw->sih->cccaps & CC_CAP_PMU)
2162 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
2164 brcms_b_phy_reset(wlc_hw);
2166 /* turn on PHY_PLL */
2167 brcms_b_core_phypll_ctl(wlc_hw, true);
2169 /* clear sw intstatus */
2170 wlc_hw->wlc->macintstatus = 0;
2172 /* restore the clk setting */
2174 brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
2177 /* txfifo sizes needs to be modified(increased) since the newer cores
2180 static void brcms_b_corerev_fifofixup(struct brcms_hardware *wlc_hw)
2182 struct d11regs __iomem *regs = wlc_hw->regs;
2184 u16 txfifo_startblk = TXFIFO_START_BLK, txfifo_endblk;
2185 u16 txfifo_def, txfifo_def1;
2188 /* tx fifos start at TXFIFO_START_BLK from the Base address */
2189 txfifo_startblk = TXFIFO_START_BLK;
2191 /* sequence of operations: reset fifo, set fifo size, reset fifo */
2192 for (fifo_nu = 0; fifo_nu < NFIFO; fifo_nu++) {
2194 txfifo_endblk = txfifo_startblk + wlc_hw->xmtfifo_sz[fifo_nu];
2195 txfifo_def = (txfifo_startblk & 0xff) |
2196 (((txfifo_endblk - 1) & 0xff) << TXFIFO_FIFOTOP_SHIFT);
2197 txfifo_def1 = ((txfifo_startblk >> 8) & 0x1) |
2199 1) >> 8) & 0x1) << TXFIFO_FIFOTOP_SHIFT);
2201 TXFIFOCMD_RESET_MASK | (fifo_nu << TXFIFOCMD_FIFOSEL_SHIFT);
2203 W_REG(®s->xmtfifocmd, txfifo_cmd);
2204 W_REG(®s->xmtfifodef, txfifo_def);
2205 W_REG(®s->xmtfifodef1, txfifo_def1);
2207 W_REG(®s->xmtfifocmd, txfifo_cmd);
2209 txfifo_startblk += wlc_hw->xmtfifo_sz[fifo_nu];
2212 * need to propagate to shm location to be in sync since ucode/hw won't
2215 brcms_b_write_shm(wlc_hw, M_FIFOSIZE0,
2216 wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]);
2217 brcms_b_write_shm(wlc_hw, M_FIFOSIZE1,
2218 wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]);
2219 brcms_b_write_shm(wlc_hw, M_FIFOSIZE2,
2220 ((wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO] << 8) | wlc_hw->
2221 xmtfifo_sz[TX_AC_BK_FIFO]));
2222 brcms_b_write_shm(wlc_hw, M_FIFOSIZE3,
2223 ((wlc_hw->xmtfifo_sz[TX_ATIM_FIFO] << 8) | wlc_hw->
2224 xmtfifo_sz[TX_BCMC_FIFO]));
2227 /* This function is used for changing the tsf frac register
2228 * If spur avoidance mode is off, the mac freq will be 80/120/160Mhz
2229 * If spur avoidance mode is on1, the mac freq will be 82/123/164Mhz
2230 * If spur avoidance mode is on2, the mac freq will be 84/126/168Mhz
2231 * HTPHY Formula is 2^26/freq(MHz) e.g.
2232 * For spuron2 - 126MHz -> 2^26/126 = 532610.0
2233 * - 532610 = 0x82082 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x2082
2234 * For spuron: 123MHz -> 2^26/123 = 545600.5
2235 * - 545601 = 0x85341 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x5341
2236 * For spur off: 120MHz -> 2^26/120 = 559240.5
2237 * - 559241 = 0x88889 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x8889
2240 void brcms_b_switch_macfreq(struct brcms_hardware *wlc_hw, u8 spurmode)
2242 struct d11regs __iomem *regs = wlc_hw->regs;
2244 if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
2245 (wlc_hw->sih->chip == BCM43225_CHIP_ID)) {
2246 if (spurmode == WL_SPURAVOID_ON2) { /* 126Mhz */
2247 W_REG(®s->tsf_clk_frac_l, 0x2082);
2248 W_REG(®s->tsf_clk_frac_h, 0x8);
2249 } else if (spurmode == WL_SPURAVOID_ON1) { /* 123Mhz */
2250 W_REG(®s->tsf_clk_frac_l, 0x5341);
2251 W_REG(®s->tsf_clk_frac_h, 0x8);
2252 } else { /* 120Mhz */
2253 W_REG(®s->tsf_clk_frac_l, 0x8889);
2254 W_REG(®s->tsf_clk_frac_h, 0x8);
2256 } else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
2257 if (spurmode == WL_SPURAVOID_ON1) { /* 82Mhz */
2258 W_REG(®s->tsf_clk_frac_l, 0x7CE0);
2259 W_REG(®s->tsf_clk_frac_h, 0xC);
2260 } else { /* 80Mhz */
2261 W_REG(®s->tsf_clk_frac_l, 0xCCCD);
2262 W_REG(®s->tsf_clk_frac_h, 0xC);
2267 /* Initialize GPIOs that are controlled by D11 core */
2268 static void brcms_c_gpio_init(struct brcms_c_info *wlc)
2270 struct brcms_hardware *wlc_hw = wlc->hw;
2271 struct d11regs __iomem *regs;
2274 regs = wlc_hw->regs;
2276 /* use GPIO select 0 to get all gpio signals from the gpio out reg */
2277 brcms_b_mctrl(wlc_hw, MCTL_GPOUT_SEL_MASK, 0);
2280 * Common GPIO setup:
2281 * G0 = LED 0 = WLAN Activity
2282 * G1 = LED 1 = WLAN 2.4 GHz Radio State
2283 * G2 = LED 2 = WLAN 5 GHz Radio State
2284 * G4 = radio disable input (HI enabled, LO disabled)
2289 /* Allocate GPIOs for mimo antenna diversity feature */
2290 if (wlc_hw->antsel_type == ANTSEL_2x3) {
2291 /* Enable antenna diversity, use 2x3 mode */
2292 brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
2293 MHF3_ANTSEL_EN, BRCM_BAND_ALL);
2294 brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE,
2295 MHF3_ANTSEL_MODE, BRCM_BAND_ALL);
2297 /* init superswitch control */
2298 wlc_phy_antsel_init(wlc_hw->band->pi, false);
2300 } else if (wlc_hw->antsel_type == ANTSEL_2x4) {
2301 gm |= gc |= (BOARD_GPIO_12 | BOARD_GPIO_13);
2303 * The board itself is powered by these GPIOs
2304 * (when not sending pattern) so set them high
2306 OR_REG(®s->psm_gpio_oe,
2307 (BOARD_GPIO_12 | BOARD_GPIO_13));
2308 OR_REG(®s->psm_gpio_out,
2309 (BOARD_GPIO_12 | BOARD_GPIO_13));
2311 /* Enable antenna diversity, use 2x4 mode */
2312 brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
2313 MHF3_ANTSEL_EN, BRCM_BAND_ALL);
2314 brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE, 0,
2317 /* Configure the desired clock to be 4Mhz */
2318 brcms_b_write_shm(wlc_hw, M_ANTSEL_CLKDIV,
2319 ANTSEL_CLKDIV_4MHZ);
2323 * gpio 9 controls the PA. ucode is responsible
2324 * for wiggling out and oe
2326 if (wlc_hw->boardflags & BFL_PACTRL)
2327 gm |= gc |= BOARD_GPIO_PACTRL;
2329 /* apply to gpiocontrol register */
2330 ai_gpiocontrol(wlc_hw->sih, gm, gc, GPIO_DRV_PRIORITY);
2333 static void brcms_ucode_write(struct brcms_hardware *wlc_hw,
2334 const __le32 ucode[], const size_t nbytes)
2336 struct d11regs __iomem *regs = wlc_hw->regs;
2340 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
2342 count = (nbytes / sizeof(u32));
2344 W_REG(®s->objaddr, (OBJADDR_AUTO_INC | OBJADDR_UCM_SEL));
2345 (void)R_REG(®s->objaddr);
2346 for (i = 0; i < count; i++)
2347 W_REG(®s->objdata, le32_to_cpu(ucode[i]));
2351 static void brcms_ucode_download(struct brcms_hardware *wlc_hw)
2353 struct brcms_c_info *wlc;
2354 struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
2358 if (wlc_hw->ucode_loaded)
2361 if (D11REV_IS(wlc_hw->corerev, 23)) {
2362 if (BRCMS_ISNPHY(wlc_hw->band)) {
2363 brcms_ucode_write(wlc_hw, ucode->bcm43xx_16_mimo,
2364 ucode->bcm43xx_16_mimosz);
2365 wlc_hw->ucode_loaded = true;
2367 wiphy_err(wlc->wiphy, "%s: wl%d: unsupported phy in "
2369 __func__, wlc_hw->unit, wlc_hw->corerev);
2370 } else if (D11REV_IS(wlc_hw->corerev, 24)) {
2371 if (BRCMS_ISLCNPHY(wlc_hw->band)) {
2372 brcms_ucode_write(wlc_hw, ucode->bcm43xx_24_lcn,
2373 ucode->bcm43xx_24_lcnsz);
2374 wlc_hw->ucode_loaded = true;
2376 wiphy_err(wlc->wiphy, "%s: wl%d: unsupported phy in "
2378 __func__, wlc_hw->unit, wlc_hw->corerev);
2383 void brcms_b_txant_set(struct brcms_hardware *wlc_hw, u16 phytxant)
2385 /* update sw state */
2386 wlc_hw->bmac_phytxant = phytxant;
2388 /* push to ucode if up */
2391 brcms_c_ucode_txant_set(wlc_hw);
2395 u16 brcms_b_get_txant(struct brcms_hardware *wlc_hw)
2397 return (u16) wlc_hw->wlc->stf->txant;
2400 void brcms_b_antsel_type_set(struct brcms_hardware *wlc_hw, u8 antsel_type)
2402 wlc_hw->antsel_type = antsel_type;
2404 /* Update the antsel type for phy module to use */
2405 wlc_phy_antsel_type_set(wlc_hw->band->pi, antsel_type);
2408 static void brcms_b_fifoerrors(struct brcms_hardware *wlc_hw)
2412 uint intstatus, idx;
2413 struct d11regs __iomem *regs = wlc_hw->regs;
2414 struct wiphy *wiphy = wlc_hw->wlc->wiphy;
2416 unit = wlc_hw->unit;
2418 for (idx = 0; idx < NFIFO; idx++) {
2419 /* read intstatus register and ignore any non-error bits */
2421 R_REG(®s->intctrlregs[idx].intstatus) & I_ERRORS;
2425 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: intstatus%d 0x%x\n",
2426 unit, idx, intstatus);
2428 if (intstatus & I_RO) {
2429 wiphy_err(wiphy, "wl%d: fifo %d: receive fifo "
2430 "overflow\n", unit, idx);
2434 if (intstatus & I_PC) {
2435 wiphy_err(wiphy, "wl%d: fifo %d: descriptor error\n",
2440 if (intstatus & I_PD) {
2441 wiphy_err(wiphy, "wl%d: fifo %d: data error\n", unit,
2446 if (intstatus & I_DE) {
2447 wiphy_err(wiphy, "wl%d: fifo %d: descriptor protocol "
2448 "error\n", unit, idx);
2452 if (intstatus & I_RU)
2453 wiphy_err(wiphy, "wl%d: fifo %d: receive descriptor "
2454 "underflow\n", idx, unit);
2456 if (intstatus & I_XU) {
2457 wiphy_err(wiphy, "wl%d: fifo %d: transmit fifo "
2458 "underflow\n", idx, unit);
2463 brcms_c_fatal_error(wlc_hw->wlc); /* big hammer */
2466 W_REG(®s->intctrlregs[idx].intstatus,
2471 void brcms_c_intrson(struct brcms_c_info *wlc)
2473 struct brcms_hardware *wlc_hw = wlc->hw;
2474 wlc->macintmask = wlc->defmacintmask;
2475 W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
2479 * callback for siutils.c, which has only wlc handler, no wl they both check
2480 * up, not only because there is no need to off/restore d11 interrupt but also
2481 * because per-port code may require sync with valid interrupt.
2483 static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc)
2488 return brcms_intrsoff(wlc->wl);
2491 static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask)
2496 brcms_intrsrestore(wlc->wl, macintmask);
2499 u32 brcms_c_intrsoff(struct brcms_c_info *wlc)
2501 struct brcms_hardware *wlc_hw = wlc->hw;
2507 macintmask = wlc->macintmask; /* isr can still happen */
2509 W_REG(&wlc_hw->regs->macintmask, 0);
2510 (void)R_REG(&wlc_hw->regs->macintmask); /* sync readback */
2511 udelay(1); /* ensure int line is no longer driven */
2512 wlc->macintmask = 0;
2514 /* return previous macintmask; resolve race between us and our isr */
2515 return wlc->macintstatus ? 0 : macintmask;
2518 void brcms_c_intrsrestore(struct brcms_c_info *wlc, u32 macintmask)
2520 struct brcms_hardware *wlc_hw = wlc->hw;
2524 wlc->macintmask = macintmask;
2525 W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
2528 static void brcms_b_tx_fifo_suspend(struct brcms_hardware *wlc_hw,
2531 u8 fifo = 1 << tx_fifo;
2533 /* Two clients of this code, 11h Quiet period and scanning. */
2535 /* only suspend if not already suspended */
2536 if ((wlc_hw->suspended_fifos & fifo) == fifo)
2539 /* force the core awake only if not already */
2540 if (wlc_hw->suspended_fifos == 0)
2541 brcms_c_ucode_wake_override_set(wlc_hw,
2542 BRCMS_WAKE_OVERRIDE_TXFIFO);
2544 wlc_hw->suspended_fifos |= fifo;
2546 if (wlc_hw->di[tx_fifo]) {
2548 * Suspending AMPDU transmissions in the middle can cause
2549 * underflow which may result in mismatch between ucode and
2550 * driver so suspend the mac before suspending the FIFO
2552 if (BRCMS_PHY_11N_CAP(wlc_hw->band))
2553 brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
2555 dma_txsuspend(wlc_hw->di[tx_fifo]);
2557 if (BRCMS_PHY_11N_CAP(wlc_hw->band))
2558 brcms_c_enable_mac(wlc_hw->wlc);
2562 static void brcms_b_tx_fifo_resume(struct brcms_hardware *wlc_hw,
2565 /* BMAC_NOTE: BRCMS_TX_FIFO_ENAB is done in brcms_c_dpc() for DMA case
2566 * but need to be done here for PIO otherwise the watchdog will catch
2567 * the inconsistency and fire
2569 /* Two clients of this code, 11h Quiet period and scanning. */
2570 if (wlc_hw->di[tx_fifo])
2571 dma_txresume(wlc_hw->di[tx_fifo]);
2573 /* allow core to sleep again */
2574 if (wlc_hw->suspended_fifos == 0)
2577 wlc_hw->suspended_fifos &= ~(1 << tx_fifo);
2578 if (wlc_hw->suspended_fifos == 0)
2579 brcms_c_ucode_wake_override_clear(wlc_hw,
2580 BRCMS_WAKE_OVERRIDE_TXFIFO);
2584 static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool on, u32 flags)
2586 const u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
2589 /* suspend tx fifos */
2590 brcms_b_tx_fifo_suspend(wlc_hw, TX_DATA_FIFO);
2591 brcms_b_tx_fifo_suspend(wlc_hw, TX_CTL_FIFO);
2592 brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_BK_FIFO);
2593 brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_VI_FIFO);
2595 /* zero the address match register so we do not send ACKs */
2596 brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
2599 /* resume tx fifos */
2600 brcms_b_tx_fifo_resume(wlc_hw, TX_DATA_FIFO);
2601 brcms_b_tx_fifo_resume(wlc_hw, TX_CTL_FIFO);
2602 brcms_b_tx_fifo_resume(wlc_hw, TX_AC_BK_FIFO);
2603 brcms_b_tx_fifo_resume(wlc_hw, TX_AC_VI_FIFO);
2605 /* Restore address */
2606 brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
2610 wlc_phy_mute_upd(wlc_hw->band->pi, on, flags);
2613 brcms_c_ucode_mute_override_set(wlc_hw);
2615 brcms_c_ucode_mute_override_clear(wlc_hw);
2619 * Read and clear macintmask and macintstatus and intstatus registers.
2620 * This routine should be called with interrupts off
2622 * -1 if brcms_deviceremoved(wlc) evaluates to true;
2623 * 0 if the interrupt is not for us, or we are in some special cases;
2624 * device interrupt status bits otherwise.
2626 static inline u32 wlc_intstatus(struct brcms_c_info *wlc, bool in_isr)
2628 struct brcms_hardware *wlc_hw = wlc->hw;
2629 struct d11regs __iomem *regs = wlc_hw->regs;
2632 /* macintstatus includes a DMA interrupt summary bit */
2633 macintstatus = R_REG(®s->macintstatus);
2635 BCMMSG(wlc->wiphy, "wl%d: macintstatus: 0x%x\n", wlc_hw->unit,
2638 /* detect cardbus removed, in power down(suspend) and in reset */
2639 if (brcms_deviceremoved(wlc))
2642 /* brcms_deviceremoved() succeeds even when the core is still resetting,
2643 * handle that case here.
2645 if (macintstatus == 0xffffffff)
2648 /* defer unsolicited interrupts */
2649 macintstatus &= (in_isr ? wlc->macintmask : wlc->defmacintmask);
2652 if (macintstatus == 0)
2655 /* interrupts are already turned off for CFE build
2656 * Caution: For CFE Turning off the interrupts again has some undesired
2659 /* turn off the interrupts */
2660 W_REG(®s->macintmask, 0);
2661 (void)R_REG(®s->macintmask); /* sync readback */
2662 wlc->macintmask = 0;
2664 /* clear device interrupts */
2665 W_REG(®s->macintstatus, macintstatus);
2667 /* MI_DMAINT is indication of non-zero intstatus */
2668 if (macintstatus & MI_DMAINT)
2670 * only fifo interrupt enabled is I_RI in
2671 * RX_FIFO. If MI_DMAINT is set, assume it
2672 * is set and clear the interrupt.
2674 W_REG(®s->intctrlregs[RX_FIFO].intstatus,
2677 return macintstatus;
2680 /* Update wlc->macintstatus and wlc->intstatus[]. */
2681 /* Return true if they are updated successfully. false otherwise */
2682 bool brcms_c_intrsupd(struct brcms_c_info *wlc)
2686 /* read and clear macintstatus and intstatus registers */
2687 macintstatus = wlc_intstatus(wlc, false);
2689 /* device is removed */
2690 if (macintstatus == 0xffffffff)
2693 /* update interrupt status in software */
2694 wlc->macintstatus |= macintstatus;
2700 * First-level interrupt processing.
2701 * Return true if this was our interrupt, false otherwise.
2702 * *wantdpc will be set to true if further brcms_c_dpc() processing is required,
2705 bool brcms_c_isr(struct brcms_c_info *wlc, bool *wantdpc)
2707 struct brcms_hardware *wlc_hw = wlc->hw;
2712 if (!wlc_hw->up || !wlc->macintmask)
2715 /* read and clear macintstatus and intstatus registers */
2716 macintstatus = wlc_intstatus(wlc, true);
2718 if (macintstatus == 0xffffffff)
2719 wiphy_err(wlc->wiphy, "DEVICEREMOVED detected in the ISR code"
2722 /* it is not for us */
2723 if (macintstatus == 0)
2728 /* save interrupt status bits */
2729 wlc->macintstatus = macintstatus;
2735 void brcms_c_suspend_mac_and_wait(struct brcms_c_info *wlc)
2737 struct brcms_hardware *wlc_hw = wlc->hw;
2738 struct d11regs __iomem *regs = wlc_hw->regs;
2740 struct wiphy *wiphy = wlc->wiphy;
2742 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
2743 wlc_hw->band->bandunit);
2746 * Track overlapping suspend requests
2748 wlc_hw->mac_suspend_depth++;
2749 if (wlc_hw->mac_suspend_depth > 1)
2752 /* force the core awake */
2753 brcms_c_ucode_wake_override_set(wlc_hw, BRCMS_WAKE_OVERRIDE_MACSUSPEND);
2755 mc = R_REG(®s->maccontrol);
2757 if (mc == 0xffffffff) {
2758 wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
2760 brcms_down(wlc->wl);
2763 WARN_ON(mc & MCTL_PSM_JMP_0);
2764 WARN_ON(!(mc & MCTL_PSM_RUN));
2765 WARN_ON(!(mc & MCTL_EN_MAC));
2767 mi = R_REG(®s->macintstatus);
2768 if (mi == 0xffffffff) {
2769 wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
2771 brcms_down(wlc->wl);
2774 WARN_ON(mi & MI_MACSSPNDD);
2776 brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, 0);
2778 SPINWAIT(!(R_REG(®s->macintstatus) & MI_MACSSPNDD),
2779 BRCMS_MAX_MAC_SUSPEND);
2781 if (!(R_REG(®s->macintstatus) & MI_MACSSPNDD)) {
2782 wiphy_err(wiphy, "wl%d: wlc_suspend_mac_and_wait: waited %d uS"
2783 " and MI_MACSSPNDD is still not on.\n",
2784 wlc_hw->unit, BRCMS_MAX_MAC_SUSPEND);
2785 wiphy_err(wiphy, "wl%d: psmdebug 0x%08x, phydebug 0x%08x, "
2786 "psm_brc 0x%04x\n", wlc_hw->unit,
2787 R_REG(®s->psmdebug),
2788 R_REG(®s->phydebug),
2789 R_REG(®s->psm_brc));
2792 mc = R_REG(®s->maccontrol);
2793 if (mc == 0xffffffff) {
2794 wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
2796 brcms_down(wlc->wl);
2799 WARN_ON(mc & MCTL_PSM_JMP_0);
2800 WARN_ON(!(mc & MCTL_PSM_RUN));
2801 WARN_ON(mc & MCTL_EN_MAC);
2804 void brcms_c_enable_mac(struct brcms_c_info *wlc)
2806 struct brcms_hardware *wlc_hw = wlc->hw;
2807 struct d11regs __iomem *regs = wlc_hw->regs;
2810 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
2811 wlc->band->bandunit);
2814 * Track overlapping suspend requests
2816 wlc_hw->mac_suspend_depth--;
2817 if (wlc_hw->mac_suspend_depth > 0)
2820 mc = R_REG(®s->maccontrol);
2821 WARN_ON(mc & MCTL_PSM_JMP_0);
2822 WARN_ON(mc & MCTL_EN_MAC);
2823 WARN_ON(!(mc & MCTL_PSM_RUN));
2825 brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, MCTL_EN_MAC);
2826 W_REG(®s->macintstatus, MI_MACSSPNDD);
2828 mc = R_REG(®s->maccontrol);
2829 WARN_ON(mc & MCTL_PSM_JMP_0);
2830 WARN_ON(!(mc & MCTL_EN_MAC));
2831 WARN_ON(!(mc & MCTL_PSM_RUN));
2833 mi = R_REG(®s->macintstatus);
2834 WARN_ON(mi & MI_MACSSPNDD);
2836 brcms_c_ucode_wake_override_clear(wlc_hw,
2837 BRCMS_WAKE_OVERRIDE_MACSUSPEND);
2840 void brcms_b_band_stf_ss_set(struct brcms_hardware *wlc_hw, u8 stf_mode)
2842 wlc_hw->hw_stf_ss_opmode = stf_mode;
2845 brcms_upd_ofdm_pctl1_table(wlc_hw);
2848 static bool brcms_b_validate_chip_access(struct brcms_hardware *wlc_hw)
2850 struct d11regs __iomem *regs;
2852 struct wiphy *wiphy = wlc_hw->wlc->wiphy;
2854 BCMMSG(wiphy, "wl%d\n", wlc_hw->unit);
2856 regs = wlc_hw->regs;
2858 /* Validate dchip register access */
2860 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2861 (void)R_REG(®s->objaddr);
2862 w = R_REG(®s->objdata);
2864 /* Can we write and read back a 32bit register? */
2865 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2866 (void)R_REG(®s->objaddr);
2867 W_REG(®s->objdata, (u32) 0xaa5555aa);
2869 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2870 (void)R_REG(®s->objaddr);
2871 val = R_REG(®s->objdata);
2872 if (val != (u32) 0xaa5555aa) {
2873 wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
2874 "expected 0xaa5555aa\n", wlc_hw->unit, val);
2878 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2879 (void)R_REG(®s->objaddr);
2880 W_REG(®s->objdata, (u32) 0x55aaaa55);
2882 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2883 (void)R_REG(®s->objaddr);
2884 val = R_REG(®s->objdata);
2885 if (val != (u32) 0x55aaaa55) {
2886 wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
2887 "expected 0x55aaaa55\n", wlc_hw->unit, val);
2891 W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
2892 (void)R_REG(®s->objaddr);
2893 W_REG(®s->objdata, w);
2895 /* clear CFPStart */
2896 W_REG(®s->tsf_cfpstart, 0);
2898 w = R_REG(®s->maccontrol);
2899 if ((w != (MCTL_IHR_EN | MCTL_WAKE)) &&
2900 (w != (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE))) {
2901 wiphy_err(wiphy, "wl%d: validate_chip_access: maccontrol = "
2902 "0x%x, expected 0x%x or 0x%x\n", wlc_hw->unit, w,
2903 (MCTL_IHR_EN | MCTL_WAKE),
2904 (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE));
2911 #define PHYPLL_WAIT_US 100000
2913 void brcms_b_core_phypll_ctl(struct brcms_hardware *wlc_hw, bool on)
2915 struct d11regs __iomem *regs;
2918 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
2921 regs = wlc_hw->regs;
2924 if ((wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
2925 OR_REG(®s->clk_ctl_st,
2926 (CCS_ERSRC_REQ_HT | CCS_ERSRC_REQ_D11PLL |
2927 CCS_ERSRC_REQ_PHYPLL));
2928 SPINWAIT((R_REG(®s->clk_ctl_st) &
2929 (CCS_ERSRC_AVAIL_HT)) != (CCS_ERSRC_AVAIL_HT),
2932 tmp = R_REG(®s->clk_ctl_st);
2933 if ((tmp & (CCS_ERSRC_AVAIL_HT)) !=
2934 (CCS_ERSRC_AVAIL_HT))
2935 wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on PHY"
2936 " PLL failed\n", __func__);
2938 OR_REG(®s->clk_ctl_st,
2939 (CCS_ERSRC_REQ_D11PLL | CCS_ERSRC_REQ_PHYPLL));
2940 SPINWAIT((R_REG(®s->clk_ctl_st) &
2941 (CCS_ERSRC_AVAIL_D11PLL |
2942 CCS_ERSRC_AVAIL_PHYPLL)) !=
2943 (CCS_ERSRC_AVAIL_D11PLL |
2944 CCS_ERSRC_AVAIL_PHYPLL), PHYPLL_WAIT_US);
2946 tmp = R_REG(®s->clk_ctl_st);
2948 (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
2950 (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
2951 wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on "
2952 "PHY PLL failed\n", __func__);
2956 * Since the PLL may be shared, other cores can still
2957 * be requesting it; so we'll deassert the request but
2958 * not wait for status to comply.
2960 AND_REG(®s->clk_ctl_st, ~CCS_ERSRC_REQ_PHYPLL);
2961 tmp = R_REG(®s->clk_ctl_st);
2965 void brcms_c_coredisable(struct brcms_hardware *wlc_hw)
2969 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
2971 dev_gone = brcms_deviceremoved(wlc_hw->wlc);
2976 if (wlc_hw->noreset)
2980 wlc_phy_switch_radio(wlc_hw->band->pi, OFF);
2982 /* turn off analog core */
2983 wlc_phy_anacore(wlc_hw->band->pi, OFF);
2985 /* turn off PHYPLL to save power */
2986 brcms_b_core_phypll_ctl(wlc_hw, false);
2988 wlc_hw->clk = false;
2989 ai_core_disable(wlc_hw->sih, 0);
2990 wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
2993 static void brcms_c_flushqueues(struct brcms_c_info *wlc)
2995 struct brcms_hardware *wlc_hw = wlc->hw;
2998 /* free any posted tx packets */
2999 for (i = 0; i < NFIFO; i++)
3000 if (wlc_hw->di[i]) {
3001 dma_txreclaim(wlc_hw->di[i], DMA_RANGE_ALL);
3002 wlc->core->txpktpend[i] = 0;
3003 BCMMSG(wlc->wiphy, "pktpend fifo %d clrd\n", i);
3006 /* free any posted rx packets */
3007 dma_rxreclaim(wlc_hw->di[RX_FIFO]);
3011 brcms_b_read_objmem(struct brcms_hardware *wlc_hw, uint offset, u32 sel)
3013 struct d11regs __iomem *regs = wlc_hw->regs;
3014 u16 __iomem *objdata_lo = (u16 __iomem *)®s->objdata;
3015 u16 __iomem *objdata_hi = objdata_lo + 1;
3018 W_REG(®s->objaddr, sel | (offset >> 2));
3019 (void)R_REG(®s->objaddr);
3021 v = R_REG(objdata_hi);
3023 v = R_REG(objdata_lo);
3029 brcms_b_write_objmem(struct brcms_hardware *wlc_hw, uint offset, u16 v,
3032 struct d11regs __iomem *regs = wlc_hw->regs;
3033 u16 __iomem *objdata_lo = (u16 __iomem *)®s->objdata;
3034 u16 __iomem *objdata_hi = objdata_lo + 1;
3036 W_REG(®s->objaddr, sel | (offset >> 2));
3037 (void)R_REG(®s->objaddr);
3039 W_REG(objdata_hi, v);
3041 W_REG(objdata_lo, v);
3045 * Read a single u16 from shared memory.
3046 * SHM 'offset' needs to be an even address
3048 u16 brcms_b_read_shm(struct brcms_hardware *wlc_hw, uint offset)
3050 return brcms_b_read_objmem(wlc_hw, offset, OBJADDR_SHM_SEL);
3054 * Write a single u16 to shared memory.
3055 * SHM 'offset' needs to be an even address
3057 void brcms_b_write_shm(struct brcms_hardware *wlc_hw, uint offset, u16 v)
3059 brcms_b_write_objmem(wlc_hw, offset, v, OBJADDR_SHM_SEL);
3063 * Copy a buffer to shared memory of specified type .
3064 * SHM 'offset' needs to be an even address and
3065 * Buffer length 'len' must be an even number of bytes
3066 * 'sel' selects the type of memory
3069 brcms_b_copyto_objmem(struct brcms_hardware *wlc_hw, uint offset,
3070 const void *buf, int len, u32 sel)
3073 const u8 *p = (const u8 *)buf;
3076 if (len <= 0 || (offset & 1) || (len & 1))
3079 for (i = 0; i < len; i += 2) {
3080 v = p[i] | (p[i + 1] << 8);
3081 brcms_b_write_objmem(wlc_hw, offset + i, v, sel);
3086 * Copy a piece of shared memory of specified type to a buffer .
3087 * SHM 'offset' needs to be an even address and
3088 * Buffer length 'len' must be an even number of bytes
3089 * 'sel' selects the type of memory
3092 brcms_b_copyfrom_objmem(struct brcms_hardware *wlc_hw, uint offset, void *buf,
3099 if (len <= 0 || (offset & 1) || (len & 1))
3102 for (i = 0; i < len; i += 2) {
3103 v = brcms_b_read_objmem(wlc_hw, offset + i, sel);
3105 p[i + 1] = (v >> 8) & 0xFF;
3109 static void brcms_b_copyfrom_vars(struct brcms_hardware *wlc_hw, char **buf,
3112 BCMMSG(wlc_hw->wlc->wiphy, "nvram vars totlen=%d\n",
3115 *buf = wlc_hw->vars;
3116 *len = wlc_hw->vars_size;
3119 static void brcms_b_retrylimit_upd(struct brcms_hardware *wlc_hw,
3125 /* write retry limit to SCR, shouldn't need to suspend */
3127 W_REG(&wlc_hw->regs->objaddr,
3128 OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
3129 (void)R_REG(&wlc_hw->regs->objaddr);
3130 W_REG(&wlc_hw->regs->objdata, wlc_hw->SRL);
3131 W_REG(&wlc_hw->regs->objaddr,
3132 OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
3133 (void)R_REG(&wlc_hw->regs->objaddr);
3134 W_REG(&wlc_hw->regs->objdata, wlc_hw->LRL);
3138 static void brcms_b_pllreq(struct brcms_hardware *wlc_hw, bool set, u32 req_bit)
3141 if (mboolisset(wlc_hw->pllreq, req_bit))
3144 mboolset(wlc_hw->pllreq, req_bit);
3146 if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) {
3148 brcms_b_xtal(wlc_hw, ON);
3151 if (!mboolisset(wlc_hw->pllreq, req_bit))
3154 mboolclr(wlc_hw->pllreq, req_bit);
3156 if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) {
3158 brcms_b_xtal(wlc_hw, OFF);
3163 static void brcms_b_antsel_set(struct brcms_hardware *wlc_hw, u32 antsel_avail)
3165 wlc_hw->antsel_avail = antsel_avail;
3169 * conditions under which the PM bit should be set in outgoing frames
3170 * and STAY_AWAKE is meaningful
3172 bool brcms_c_ps_allowed(struct brcms_c_info *wlc)
3174 struct brcms_bss_cfg *cfg = wlc->bsscfg;
3176 /* disallow PS when one of the following global conditions meets */
3177 if (!wlc->pub->associated)
3180 /* disallow PS when one of these meets when not scanning */
3184 if (cfg->associated) {
3186 * disallow PS when one of the following
3187 * bsscfg specific conditions meets
3198 static void brcms_b_reset(struct brcms_hardware *wlc_hw)
3200 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
3202 /* reset the core */
3203 if (!brcms_deviceremoved(wlc_hw->wlc))
3204 brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
3206 /* purge the dma rings */
3207 brcms_c_flushqueues(wlc_hw->wlc);
3210 void brcms_c_reset(struct brcms_c_info *wlc)
3212 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
3214 /* slurp up hw mac counters before core reset */
3215 brcms_c_statsupd(wlc);
3217 /* reset our snapshot of macstat counters */
3218 memset((char *)wlc->core->macstat_snapshot, 0,
3219 sizeof(struct macstat));
3221 brcms_b_reset(wlc->hw);
3224 void brcms_c_fatal_error(struct brcms_c_info *wlc)
3226 wiphy_err(wlc->wiphy, "wl%d: fatal error, reinitializing\n",
3228 brcms_init(wlc->wl);
3231 /* Return the channel the driver should initialize during brcms_c_init.
3232 * the channel may have to be changed from the currently configured channel
3233 * if other configurations are in conflict (bandlocked, 11n mode disabled,
3234 * invalid channel for current country, etc.)
3236 static u16 brcms_c_init_chanspec(struct brcms_c_info *wlc)
3239 1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
3240 WL_CHANSPEC_BAND_2G;
3245 void brcms_c_init_scb(struct scb *scb)
3249 memset(scb, 0, sizeof(struct scb));
3250 scb->flags = SCB_WMECAP | SCB_HTCAP;
3251 for (i = 0; i < NUMPRIO; i++) {
3253 scb->seqctl[i] = 0xFFFF;
3256 scb->seqctl_nonqos = 0xFFFF;
3257 scb->magic = SCB_MAGIC;
3262 * download ucode/PCM
3263 * let ucode run to suspended
3264 * download ucode inits
3265 * config other core registers
3268 static void brcms_b_coreinit(struct brcms_c_info *wlc)
3270 struct brcms_hardware *wlc_hw = wlc->hw;
3271 struct d11regs __iomem *regs;
3275 bool fifosz_fixup = false;
3278 struct wiphy *wiphy = wlc->wiphy;
3279 struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
3281 regs = wlc_hw->regs;
3283 BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
3286 brcms_b_mctrl(wlc_hw, ~0, (MCTL_IHR_EN | MCTL_PSM_JMP_0 | MCTL_WAKE));
3288 brcms_ucode_download(wlc_hw);
3290 * FIFOSZ fixup. driver wants to controls the fifo allocation.
3292 fifosz_fixup = true;
3294 /* let the PSM run to the suspended state, set mode to BSS STA */
3295 W_REG(®s->macintstatus, -1);
3296 brcms_b_mctrl(wlc_hw, ~0,
3297 (MCTL_IHR_EN | MCTL_INFRA | MCTL_PSM_RUN | MCTL_WAKE));
3299 /* wait for ucode to self-suspend after auto-init */
3300 SPINWAIT(((R_REG(®s->macintstatus) & MI_MACSSPNDD) == 0),
3302 if ((R_REG(®s->macintstatus) & MI_MACSSPNDD) == 0)
3303 wiphy_err(wiphy, "wl%d: wlc_coreinit: ucode did not self-"
3304 "suspend!\n", wlc_hw->unit);
3306 brcms_c_gpio_init(wlc);
3308 sflags = ai_core_sflags(wlc_hw->sih, 0, 0);
3310 if (D11REV_IS(wlc_hw->corerev, 23)) {
3311 if (BRCMS_ISNPHY(wlc_hw->band))
3312 brcms_c_write_inits(wlc_hw, ucode->d11n0initvals16);
3314 wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
3315 " %d\n", __func__, wlc_hw->unit,
3317 } else if (D11REV_IS(wlc_hw->corerev, 24)) {
3318 if (BRCMS_ISLCNPHY(wlc_hw->band))
3319 brcms_c_write_inits(wlc_hw, ucode->d11lcn0initvals24);
3321 wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
3322 " %d\n", __func__, wlc_hw->unit,
3325 wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
3326 __func__, wlc_hw->unit, wlc_hw->corerev);
3329 /* For old ucode, txfifo sizes needs to be modified(increased) */
3330 if (fifosz_fixup == true)
3331 brcms_b_corerev_fifofixup(wlc_hw);
3333 /* check txfifo allocations match between ucode and driver */
3334 buf[TX_AC_BE_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE0);
3335 if (buf[TX_AC_BE_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]) {
3339 buf[TX_AC_VI_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE1);
3340 if (buf[TX_AC_VI_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]) {
3344 buf[TX_AC_BK_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE2);
3345 buf[TX_AC_VO_FIFO] = (buf[TX_AC_BK_FIFO] >> 8) & 0xff;
3346 buf[TX_AC_BK_FIFO] &= 0xff;
3347 if (buf[TX_AC_BK_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BK_FIFO]) {
3351 if (buf[TX_AC_VO_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO]) {
3355 buf[TX_BCMC_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE3);
3356 buf[TX_ATIM_FIFO] = (buf[TX_BCMC_FIFO] >> 8) & 0xff;
3357 buf[TX_BCMC_FIFO] &= 0xff;
3358 if (buf[TX_BCMC_FIFO] != wlc_hw->xmtfifo_sz[TX_BCMC_FIFO]) {
3362 if (buf[TX_ATIM_FIFO] != wlc_hw->xmtfifo_sz[TX_ATIM_FIFO]) {
3367 wiphy_err(wiphy, "wlc_coreinit: txfifo mismatch: ucode size %d"
3368 " driver size %d index %d\n", buf[i],
3369 wlc_hw->xmtfifo_sz[i], i);
3371 /* make sure we can still talk to the mac */
3372 WARN_ON(R_REG(®s->maccontrol) == 0xffffffff);
3374 /* band-specific inits done by wlc_bsinit() */
3376 /* Set up frame burst size and antenna swap threshold init values */
3377 brcms_b_write_shm(wlc_hw, M_MBURST_SIZE, MAXTXFRAMEBURST);
3378 brcms_b_write_shm(wlc_hw, M_MAX_ANTCNT, ANTCNT);
3380 /* enable one rx interrupt per received frame */
3381 W_REG(®s->intrcvlazy[0], (1 << IRL_FC_SHIFT));
3383 /* set the station mode (BSS STA) */
3384 brcms_b_mctrl(wlc_hw,
3385 (MCTL_INFRA | MCTL_DISCARD_PMQ | MCTL_AP),
3386 (MCTL_INFRA | MCTL_DISCARD_PMQ));
3388 /* set up Beacon interval */
3389 bcnint_us = 0x8000 << 10;
3390 W_REG(®s->tsf_cfprep, (bcnint_us << CFPREP_CBI_SHIFT));
3391 W_REG(®s->tsf_cfpstart, bcnint_us);
3392 W_REG(®s->macintstatus, MI_GP1);
3394 /* write interrupt mask */
3395 W_REG(®s->intctrlregs[RX_FIFO].intmask, DEF_RXINTMASK);
3397 /* allow the MAC to control the PHY clock (dynamic on/off) */
3398 brcms_b_macphyclk_set(wlc_hw, ON);
3400 /* program dynamic clock control fast powerup delay register */
3401 wlc->fastpwrup_dly = ai_clkctl_fast_pwrup_delay(wlc_hw->sih);
3402 W_REG(®s->scc_fastpwrup_dly, wlc->fastpwrup_dly);
3404 /* tell the ucode the corerev */
3405 brcms_b_write_shm(wlc_hw, M_MACHW_VER, (u16) wlc_hw->corerev);
3407 /* tell the ucode MAC capabilities */
3408 brcms_b_write_shm(wlc_hw, M_MACHW_CAP_L,
3409 (u16) (wlc_hw->machwcap & 0xffff));
3410 brcms_b_write_shm(wlc_hw, M_MACHW_CAP_H,
3412 machwcap >> 16) & 0xffff));
3414 /* write retry limits to SCR, this done after PSM init */
3415 W_REG(®s->objaddr, OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
3416 (void)R_REG(®s->objaddr);
3417 W_REG(®s->objdata, wlc_hw->SRL);
3418 W_REG(®s->objaddr, OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
3419 (void)R_REG(®s->objaddr);
3420 W_REG(®s->objdata, wlc_hw->LRL);
3422 /* write rate fallback retry limits */
3423 brcms_b_write_shm(wlc_hw, M_SFRMTXCNTFBRTHSD, wlc_hw->SFBL);
3424 brcms_b_write_shm(wlc_hw, M_LFRMTXCNTFBRTHSD, wlc_hw->LFBL);
3426 AND_REG(®s->ifs_ctl, 0x0FFF);
3427 W_REG(®s->ifs_aifsn, EDCF_AIFSN_MIN);
3429 /* init the tx dma engines */
3430 for (i = 0; i < NFIFO; i++) {
3432 dma_txinit(wlc_hw->di[i]);
3435 /* init the rx dma engine(s) and post receive buffers */
3436 dma_rxinit(wlc_hw->di[RX_FIFO]);
3437 dma_rxfill(wlc_hw->di[RX_FIFO]);
3441 static brcms_b_init(struct brcms_hardware *wlc_hw, u16 chanspec,
3445 struct brcms_c_info *wlc = wlc_hw->wlc;
3447 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
3449 /* request FAST clock if not on */
3450 fastclk = wlc_hw->forcefastclk;
3452 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
3454 /* disable interrupts */
3455 macintmask = brcms_intrsoff(wlc->wl);
3457 /* set up the specified band and chanspec */
3458 brcms_c_setxband(wlc_hw, chspec_bandunit(chanspec));
3459 wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);
3461 /* do one-time phy inits and calibration */
3462 wlc_phy_cal_init(wlc_hw->band->pi);
3464 /* core-specific initialization */
3465 brcms_b_coreinit(wlc);
3467 /* suspend the tx fifos and mute the phy for preism cac time */
3469 brcms_b_mute(wlc_hw, ON, PHY_MUTE_FOR_PREISM);
3471 /* band-specific inits */
3472 brcms_b_bsinit(wlc, chanspec);
3474 /* restore macintmask */
3475 brcms_intrsrestore(wlc->wl, macintmask);
3477 /* seed wake_override with BRCMS_WAKE_OVERRIDE_MACSUSPEND since the mac
3478 * is suspended and brcms_c_enable_mac() will clear this override bit.
3480 mboolset(wlc_hw->wake_override, BRCMS_WAKE_OVERRIDE_MACSUSPEND);
3483 * initialize mac_suspend_depth to 1 to match ucode
3484 * initial suspended state
3486 wlc_hw->mac_suspend_depth = 1;
3488 /* restore the clk */
3490 brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
3493 static void brcms_c_set_phy_chanspec(struct brcms_c_info *wlc,
3496 /* Save our copy of the chanspec */
3497 wlc->chanspec = chanspec;
3499 /* Set the chanspec and power limits for this locale */
3500 brcms_c_channel_set_chanspec(wlc->cmi, chanspec, BRCMS_TXPWR_MAX);
3502 if (wlc->stf->ss_algosel_auto)
3503 brcms_c_stf_ss_algo_channel_get(wlc, &wlc->stf->ss_algo_channel,
3506 brcms_c_stf_ss_update(wlc, wlc->band);
3510 static void brcms_c_bandinit_ordered(struct brcms_c_info *wlc,
3513 struct brcms_c_rateset default_rateset;
3515 uint i, band_order[2];
3517 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
3519 * We might have been bandlocked during down and the chip
3520 * power-cycled (hibernate). Figure out the right band to park on
3522 if (wlc->bandlocked || wlc->pub->_nbands == 1) {
3523 /* updated in brcms_c_bandlock() */
3524 parkband = wlc->band->bandunit;
3525 band_order[0] = band_order[1] = parkband;
3527 /* park on the band of the specified chanspec */
3528 parkband = chspec_bandunit(chanspec);
3530 /* order so that parkband initialize last */
3531 band_order[0] = parkband ^ 1;
3532 band_order[1] = parkband;
3535 /* make each band operational, software state init */
3536 for (i = 0; i < wlc->pub->_nbands; i++) {
3537 uint j = band_order[i];
3539 wlc->band = wlc->bandstate[j];
3541 brcms_default_rateset(wlc, &default_rateset);
3543 /* fill in hw_rate */
3544 brcms_c_rateset_filter(&default_rateset, &wlc->band->hw_rateset,
3545 false, BRCMS_RATES_CCK_OFDM, BRCMS_RATE_MASK,
3546 (bool) (wlc->pub->_n_enab & SUPPORT_11N));
3548 /* init basic rate lookup */
3549 brcms_c_rate_lookup_init(wlc, &default_rateset);
3552 /* sync up phy/radio chanspec */
3553 brcms_c_set_phy_chanspec(wlc, chanspec);
3557 * ucode, hwmac update
3558 * Channel dependent updates for ucode and hw
3560 static void brcms_c_ucode_mac_upd(struct brcms_c_info *wlc)
3562 /* enable or disable any active IBSSs depending on whether or not
3563 * we are on the home channel
3565 if (wlc->home_chanspec == wlc_phy_chanspec_get(wlc->band->pi)) {
3566 if (wlc->pub->associated) {
3568 * BMAC_NOTE: This is something that should be fixed
3569 * in ucode inits. I think that the ucode inits set
3570 * up the bcn templates and shm values with a bogus
3571 * beacon. This should not be done in the inits. If
3572 * ucode needs to set up a beacon for testing, the
3573 * test routines should write it down, not expect the
3574 * inits to populate a bogus beacon.
3576 if (BRCMS_PHY_11N_CAP(wlc->band))
3577 brcms_b_write_shm(wlc->hw,
3578 M_BCN_TXTSF_OFFSET, 0);
3581 /* disable an active IBSS if we are not on the home channel */
3584 /* update the various promisc bits */
3585 brcms_c_mac_bcn_promisc(wlc);
3586 brcms_c_mac_promisc(wlc);
3589 /* band-specific init */
3590 static void brcms_c_bsinit(struct brcms_c_info *wlc)
3592 BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n",
3593 wlc->pub->unit, wlc->band->bandunit);
3595 /* write ucode ACK/CTS rate table */
3596 brcms_c_set_ratetable(wlc);
3598 /* update some band specific mac configuration */
3599 brcms_c_ucode_mac_upd(wlc);
3601 /* init antenna selection */
3602 brcms_c_antsel_init(wlc->asi);
3606 /* formula: IDLE_BUSY_RATIO_X_16 = (100-duty_cycle)/duty_cycle*16 */
3608 brcms_c_duty_cycle_set(struct brcms_c_info *wlc, int duty_cycle, bool isOFDM,
3611 int idle_busy_ratio_x_16 = 0;
3613 isOFDM ? M_TX_IDLE_BUSY_RATIO_X_16_OFDM :
3614 M_TX_IDLE_BUSY_RATIO_X_16_CCK;
3615 if (duty_cycle > 100 || duty_cycle < 0) {
3616 wiphy_err(wlc->wiphy, "wl%d: duty cycle value off limit\n",
3621 idle_busy_ratio_x_16 = (100 - duty_cycle) * 16 / duty_cycle;
3622 /* Only write to shared memory when wl is up */
3624 brcms_b_write_shm(wlc->hw, offset, (u16) idle_busy_ratio_x_16);
3627 wlc->tx_duty_cycle_ofdm = (u16) duty_cycle;
3629 wlc->tx_duty_cycle_cck = (u16) duty_cycle;
3635 * Initialize the base precedence map for dequeueing
3636 * from txq based on WME settings
3638 static void brcms_c_tx_prec_map_init(struct brcms_c_info *wlc)
3640 wlc->tx_prec_map = BRCMS_PREC_BMP_ALL;
3641 memset(wlc->fifo2prec_map, 0, NFIFO * sizeof(u16));
3643 wlc->fifo2prec_map[TX_AC_BK_FIFO] = BRCMS_PREC_BMP_AC_BK;
3644 wlc->fifo2prec_map[TX_AC_BE_FIFO] = BRCMS_PREC_BMP_AC_BE;
3645 wlc->fifo2prec_map[TX_AC_VI_FIFO] = BRCMS_PREC_BMP_AC_VI;
3646 wlc->fifo2prec_map[TX_AC_VO_FIFO] = BRCMS_PREC_BMP_AC_VO;
3650 brcms_c_txflowcontrol_signal(struct brcms_c_info *wlc,
3651 struct brcms_txq_info *qi, bool on, int prio)
3653 /* transmit flowcontrol is not yet implemented */
3656 static void brcms_c_txflowcontrol_reset(struct brcms_c_info *wlc)
3658 struct brcms_txq_info *qi;
3660 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
3662 brcms_c_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
3668 void brcms_c_init(struct brcms_c_info *wlc)
3670 struct d11regs __iomem *regs;
3674 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
3679 * This will happen if a big-hammer was executed. In
3680 * that case, we want to go back to the channel that
3681 * we were on and not new channel
3683 if (wlc->pub->associated)
3684 chanspec = wlc->home_chanspec;
3686 chanspec = brcms_c_init_chanspec(wlc);
3688 brcms_b_init(wlc->hw, chanspec, mute);
3690 /* update beacon listen interval */
3691 brcms_c_bcn_li_upd(wlc);
3693 /* write ethernet address to core */
3694 brcms_c_set_mac(wlc->bsscfg);
3695 brcms_c_set_bssid(wlc->bsscfg);
3697 /* Update tsf_cfprep if associated and up */
3698 if (wlc->pub->associated && wlc->bsscfg->up) {
3701 /* get beacon period and convert to uS */
3702 bi = wlc->bsscfg->current_bss->beacon_period << 10;
3704 * update since init path would reset
3707 W_REG(®s->tsf_cfprep,
3708 (bi << CFPREP_CBI_SHIFT));
3710 /* Update maccontrol PM related bits */
3711 brcms_c_set_ps_ctrl(wlc);
3714 brcms_c_bandinit_ordered(wlc, chanspec);
3716 /* init probe response timeout */
3717 brcms_b_write_shm(wlc->hw, M_PRS_MAXTIME, wlc->prb_resp_timeout);
3719 /* init max burst txop (framebursting) */
3720 brcms_b_write_shm(wlc->hw, M_MBURST_TXOP,
3722 _rifs ? (EDCF_AC_VO_TXOP_AP << 5) : MAXFRAMEBURST_TXOP));
3724 /* initialize maximum allowed duty cycle */
3725 brcms_c_duty_cycle_set(wlc, wlc->tx_duty_cycle_ofdm, true, true);
3726 brcms_c_duty_cycle_set(wlc, wlc->tx_duty_cycle_cck, false, true);
3729 * Update some shared memory locations related to
3730 * max AMPDU size allowed to received
3732 brcms_c_ampdu_shm_upd(wlc->ampdu);
3734 /* band-specific inits */
3735 brcms_c_bsinit(wlc);
3737 /* Enable EDCF mode (while the MAC is suspended) */
3738 OR_REG(®s->ifs_ctl, IFS_USEEDCF);
3739 brcms_c_edcf_setparams(wlc, false);
3741 /* Init precedence maps for empty FIFOs */
3742 brcms_c_tx_prec_map_init(wlc);
3744 /* read the ucode version if we have not yet done so */
3745 if (wlc->ucode_rev == 0) {
3747 brcms_b_read_shm(wlc->hw, M_BOM_REV_MAJOR) << NBITS(u16);
3748 wlc->ucode_rev |= brcms_b_read_shm(wlc->hw, M_BOM_REV_MINOR);
3751 /* ..now really unleash hell (allow the MAC out of suspend) */
3752 brcms_c_enable_mac(wlc);
3754 /* clear tx flow control */
3755 brcms_c_txflowcontrol_reset(wlc);
3757 /* enable the RF Disable Delay timer */
3758 W_REG(&wlc->regs->rfdisabledly, RFDISABLE_DEFAULT);
3760 /* initialize mpc delay */
3761 wlc->mpc_delay_off = wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
3764 * Initialize WME parameters; if they haven't been set by some other
3765 * mechanism (IOVar, etc) then read them from the hardware.
3767 if (GFIELD(wlc->wme_retries[0], EDCF_SHORT) == 0) {
3768 /* Uninitialized; read from HW */
3771 for (ac = 0; ac < AC_COUNT; ac++)
3772 wlc->wme_retries[ac] =
3773 brcms_b_read_shm(wlc->hw, M_AC_TXLMT_ADDR(ac));
3777 void brcms_c_mac_bcn_promisc_change(struct brcms_c_info *wlc, bool promisc)
3779 wlc->bcnmisc_monitor = promisc;
3780 brcms_c_mac_bcn_promisc(wlc);
3783 void brcms_c_mac_bcn_promisc(struct brcms_c_info *wlc)
3785 if (wlc->bcnmisc_monitor)
3786 brcms_b_mctrl(wlc->hw, MCTL_BCNS_PROMISC, MCTL_BCNS_PROMISC);
3788 brcms_b_mctrl(wlc->hw, MCTL_BCNS_PROMISC, 0);
3791 /* set or clear maccontrol bits MCTL_PROMISC and MCTL_KEEPCONTROL */
3792 void brcms_c_mac_promisc(struct brcms_c_info *wlc)
3794 u32 promisc_bits = 0;
3797 * promiscuous mode just sets MCTL_PROMISC
3798 * Note: APs get all BSS traffic without the need to set
3799 * the MCTL_PROMISC bit since all BSS data traffic is
3800 * directed at the AP
3802 if (wlc->pub->promisc)
3803 promisc_bits |= MCTL_PROMISC;
3805 /* monitor mode needs both MCTL_PROMISC and MCTL_KEEPCONTROL
3806 * Note: monitor mode also needs MCTL_BCNS_PROMISC, but that is
3807 * handled in brcms_c_mac_bcn_promisc()
3810 promisc_bits |= MCTL_PROMISC | MCTL_KEEPCONTROL;
3812 brcms_b_mctrl(wlc->hw, MCTL_PROMISC | MCTL_KEEPCONTROL, promisc_bits);
3815 /* push sw hps and wake state through hardware */
3816 void brcms_c_set_ps_ctrl(struct brcms_c_info *wlc)
3822 hps = brcms_c_ps_allowed(wlc);
3824 BCMMSG(wlc->wiphy, "wl%d: hps %d\n", wlc->pub->unit, hps);
3826 v1 = R_REG(&wlc->regs->maccontrol);
3831 brcms_b_mctrl(wlc->hw, MCTL_WAKE | MCTL_HPS, v2);
3833 awake_before = ((v1 & MCTL_WAKE) || ((v1 & MCTL_HPS) == 0));
3836 brcms_b_wait_for_wake(wlc->hw);
3841 * Write this BSS config's MAC address to core.
3842 * Updates RXE match engine.
3844 int brcms_c_set_mac(struct brcms_bss_cfg *bsscfg)
3847 struct brcms_c_info *wlc = bsscfg->wlc;
3849 /* enter the MAC addr into the RXE match registers */
3850 brcms_c_set_addrmatch(wlc, RCM_MAC_OFFSET, bsscfg->cur_etheraddr);
3852 brcms_c_ampdu_macaddr_upd(wlc);
3857 /* Write the BSS config's BSSID address to core (set_bssid in d11procs.tcl).
3858 * Updates RXE match engine.
3860 void brcms_c_set_bssid(struct brcms_bss_cfg *bsscfg)
3862 /* we need to update BSSID in RXE match registers */
3863 brcms_c_set_addrmatch(bsscfg->wlc, RCM_BSSID_OFFSET, bsscfg->BSSID);
3866 static void brcms_b_set_shortslot(struct brcms_hardware *wlc_hw, bool shortslot)
3868 wlc_hw->shortslot = shortslot;
3870 if (wlc_hw->band->bandtype == BRCM_BAND_2G && wlc_hw->up) {
3871 brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
3872 brcms_b_update_slot_timing(wlc_hw, shortslot);
3873 brcms_c_enable_mac(wlc_hw->wlc);
3878 * Suspend the the MAC and update the slot timing
3879 * for standard 11b/g (20us slots) or shortslot 11g (9us slots).
3881 void brcms_c_switch_shortslot(struct brcms_c_info *wlc, bool shortslot)
3883 /* use the override if it is set */
3884 if (wlc->shortslot_override != BRCMS_SHORTSLOT_AUTO)
3885 shortslot = (wlc->shortslot_override == BRCMS_SHORTSLOT_ON);
3887 if (wlc->shortslot == shortslot)
3890 wlc->shortslot = shortslot;
3892 brcms_b_set_shortslot(wlc->hw, shortslot);
3895 void brcms_c_set_home_chanspec(struct brcms_c_info *wlc, u16 chanspec)
3897 if (wlc->home_chanspec != chanspec) {
3898 wlc->home_chanspec = chanspec;
3900 if (wlc->bsscfg->associated)
3901 wlc->bsscfg->current_bss->chanspec = chanspec;
3906 brcms_b_set_chanspec(struct brcms_hardware *wlc_hw, u16 chanspec,
3907 bool mute, struct txpwr_limits *txpwr)
3911 BCMMSG(wlc_hw->wlc->wiphy, "wl%d: 0x%x\n", wlc_hw->unit, chanspec);
3913 wlc_hw->chanspec = chanspec;
3915 /* Switch bands if necessary */
3916 if (wlc_hw->_nbands > 1) {
3917 bandunit = chspec_bandunit(chanspec);
3918 if (wlc_hw->band->bandunit != bandunit) {
3919 /* brcms_b_setband disables other bandunit,
3920 * use light band switch if not up yet
3923 wlc_phy_chanspec_radio_set(wlc_hw->
3924 bandstate[bandunit]->
3926 brcms_b_setband(wlc_hw, bandunit, chanspec);
3928 brcms_c_setxband(wlc_hw, bandunit);
3933 wlc_phy_initcal_enable(wlc_hw->band->pi, !mute);
3937 wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr,
3939 wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);
3941 wlc_phy_chanspec_set(wlc_hw->band->pi, chanspec);
3942 wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr, chanspec);
3944 /* Update muting of the channel */
3945 brcms_b_mute(wlc_hw, mute, 0);
3949 /* switch to and initialize new band */
3950 static void brcms_c_setband(struct brcms_c_info *wlc,
3953 wlc->band = wlc->bandstate[bandunit];
3958 /* wait for at least one beacon before entering sleeping state */
3959 brcms_c_set_ps_ctrl(wlc);
3961 /* band-specific initializations */
3962 brcms_c_bsinit(wlc);
3965 void brcms_c_set_chanspec(struct brcms_c_info *wlc, u16 chanspec)
3968 bool switchband = false;
3969 u16 old_chanspec = wlc->chanspec;
3971 if (!brcms_c_valid_chanspec_db(wlc->cmi, chanspec)) {
3972 wiphy_err(wlc->wiphy, "wl%d: %s: Bad channel %d\n",
3973 wlc->pub->unit, __func__, CHSPEC_CHANNEL(chanspec));
3977 /* Switch bands if necessary */
3978 if (wlc->pub->_nbands > 1) {
3979 bandunit = chspec_bandunit(chanspec);
3980 if (wlc->band->bandunit != bandunit || wlc->bandinit_pending) {
3982 if (wlc->bandlocked) {
3983 wiphy_err(wlc->wiphy, "wl%d: %s: chspec %d "
3984 "band is locked!\n",
3985 wlc->pub->unit, __func__,
3986 CHSPEC_CHANNEL(chanspec));
3990 * should the setband call come after the
3991 * brcms_b_chanspec() ? if the setband updates
3992 * (brcms_c_bsinit) use low level calls to inspect and
3993 * set state, the state inspected may be from the wrong
3994 * band, or the following brcms_b_set_chanspec() may
3997 brcms_c_setband(wlc, bandunit);
4001 /* sync up phy/radio chanspec */
4002 brcms_c_set_phy_chanspec(wlc, chanspec);
4004 /* init antenna selection */
4005 if (brcms_chspec_bw(old_chanspec) != brcms_chspec_bw(chanspec)) {
4006 brcms_c_antsel_init(wlc->asi);
4008 /* Fix the hardware rateset based on bw.
4009 * Mainly add MCS32 for 40Mhz, remove MCS 32 for 20Mhz
4011 brcms_c_rateset_bw_mcs_filter(&wlc->band->hw_rateset,
4012 wlc->band->mimo_cap_40 ? brcms_chspec_bw(chanspec) : 0);
4015 /* update some mac configuration since chanspec changed */
4016 brcms_c_ucode_mac_upd(wlc);
4019 u32 brcms_c_lowest_basic_rspec(struct brcms_c_info *wlc,
4020 struct brcms_c_rateset *rs)
4022 u32 lowest_basic_rspec;
4025 /* Use the lowest basic rate */
4026 lowest_basic_rspec = rs->rates[0] & BRCMS_RATE_MASK;
4027 for (i = 0; i < rs->count; i++) {
4028 if (rs->rates[i] & BRCMS_RATE_FLAG) {
4029 lowest_basic_rspec = rs->rates[i] & BRCMS_RATE_MASK;
4035 * pick siso/cdd as default for OFDM (note no basic
4036 * rate MCSs are supported yet)
4038 if (is_ofdm_rate(lowest_basic_rspec))
4039 lowest_basic_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
4041 return lowest_basic_rspec;
4045 * This function changes the phytxctl for beacon based on current
4046 * beacon ratespec AND txant setting as per this table:
4047 * ratespec CCK ant = wlc->stf->txant
4050 void brcms_c_beacon_phytxctl_txant_upd(struct brcms_c_info *wlc,
4054 u16 phytxant = wlc->stf->phytxant;
4055 u16 mask = PHY_TXC_ANT_MASK;
4057 /* for non-siso rates or default setting, use the available chains */
4058 if (BRCMS_PHY_11N_CAP(wlc->band))
4059 phytxant = brcms_c_stf_phytxchain_sel(wlc, bcn_rspec);
4061 phyctl = brcms_b_read_shm(wlc->hw, M_BCN_PCTLWD);
4062 phyctl = (phyctl & ~mask) | phytxant;
4063 brcms_b_write_shm(wlc->hw, M_BCN_PCTLWD, phyctl);
4067 * centralized protection config change function to simplify debugging, no
4068 * consistency checking this should be called only on changes to avoid overhead
4069 * in periodic function
4071 void brcms_c_protection_upd(struct brcms_c_info *wlc, uint idx, int val)
4073 BCMMSG(wlc->wiphy, "idx %d, val %d\n", idx, val);
4076 case BRCMS_PROT_G_SPEC:
4077 wlc->protection->_g = (bool) val;
4079 case BRCMS_PROT_G_OVR:
4080 wlc->protection->g_override = (s8) val;
4082 case BRCMS_PROT_G_USER:
4083 wlc->protection->gmode_user = (u8) val;
4085 case BRCMS_PROT_OVERLAP:
4086 wlc->protection->overlap = (s8) val;
4088 case BRCMS_PROT_N_USER:
4089 wlc->protection->nmode_user = (s8) val;
4091 case BRCMS_PROT_N_CFG:
4092 wlc->protection->n_cfg = (s8) val;
4094 case BRCMS_PROT_N_CFG_OVR:
4095 wlc->protection->n_cfg_override = (s8) val;
4097 case BRCMS_PROT_N_NONGF:
4098 wlc->protection->nongf = (bool) val;
4100 case BRCMS_PROT_N_NONGF_OVR:
4101 wlc->protection->nongf_override = (s8) val;
4103 case BRCMS_PROT_N_PAM_OVR:
4104 wlc->protection->n_pam_override = (s8) val;
4106 case BRCMS_PROT_N_OBSS:
4107 wlc->protection->n_obss = (bool) val;
4116 static void brcms_c_ht_update_sgi_rx(struct brcms_c_info *wlc, int val)
4119 brcms_c_update_beacon(wlc);
4120 brcms_c_update_probe_resp(wlc, true);
4124 static void brcms_c_ht_update_ldpc(struct brcms_c_info *wlc, s8 val)
4126 wlc->stf->ldpc = val;
4129 brcms_c_update_beacon(wlc);
4130 brcms_c_update_probe_resp(wlc, true);
4131 wlc_phy_ldpc_override_set(wlc->band->pi, (val ? true : false));
4135 void brcms_c_wme_setparams(struct brcms_c_info *wlc, u16 aci,
4136 const struct ieee80211_tx_queue_params *params,
4140 struct shm_acparams acp_shm;
4143 /* Only apply params if the core is out of reset and has clocks */
4145 wiphy_err(wlc->wiphy, "wl%d: %s : no-clock\n", wlc->pub->unit,
4150 memset((char *)&acp_shm, 0, sizeof(struct shm_acparams));
4151 /* fill in shm ac params struct */
4152 acp_shm.txop = params->txop;
4153 /* convert from units of 32us to us for ucode */
4154 wlc->edcf_txop[aci & 0x3] = acp_shm.txop =
4155 EDCF_TXOP2USEC(acp_shm.txop);
4156 acp_shm.aifs = (params->aifs & EDCF_AIFSN_MASK);
4158 if (aci == AC_VI && acp_shm.txop == 0
4159 && acp_shm.aifs < EDCF_AIFSN_MAX)
4162 if (acp_shm.aifs < EDCF_AIFSN_MIN
4163 || acp_shm.aifs > EDCF_AIFSN_MAX) {
4164 wiphy_err(wlc->wiphy, "wl%d: edcf_setparams: bad "
4165 "aifs %d\n", wlc->pub->unit, acp_shm.aifs);
4167 acp_shm.cwmin = params->cw_min;
4168 acp_shm.cwmax = params->cw_max;
4169 acp_shm.cwcur = acp_shm.cwmin;
4171 R_REG(&wlc->regs->tsf_random) & acp_shm.cwcur;
4172 acp_shm.reggap = acp_shm.bslots + acp_shm.aifs;
4173 /* Indicate the new params to the ucode */
4174 acp_shm.status = brcms_b_read_shm(wlc->hw, (M_EDCF_QINFO +
4177 M_EDCF_STATUS_OFF));
4178 acp_shm.status |= WME_STATUS_NEWAC;
4180 /* Fill in shm acparam table */
4181 shm_entry = (u16 *) &acp_shm;
4182 for (i = 0; i < (int)sizeof(struct shm_acparams); i += 2)
4183 brcms_b_write_shm(wlc->hw,
4185 wme_ac2fifo[aci] * M_EDCF_QLEN + i,
4190 brcms_c_suspend_mac_and_wait(wlc);
4191 brcms_c_enable_mac(wlc);
4195 void brcms_c_edcf_setparams(struct brcms_c_info *wlc, bool suspend)
4199 struct ieee80211_tx_queue_params txq_pars;
4200 static const struct edcf_acparam default_edcf_acparams[] = {
4201 {EDCF_AC_BE_ACI_STA, EDCF_AC_BE_ECW_STA, EDCF_AC_BE_TXOP_STA},
4202 {EDCF_AC_BK_ACI_STA, EDCF_AC_BK_ECW_STA, EDCF_AC_BK_TXOP_STA},
4203 {EDCF_AC_VI_ACI_STA, EDCF_AC_VI_ECW_STA, EDCF_AC_VI_TXOP_STA},
4204 {EDCF_AC_VO_ACI_STA, EDCF_AC_VO_ECW_STA, EDCF_AC_VO_TXOP_STA}
4205 }; /* ucode needs these parameters during its initialization */
4206 const struct edcf_acparam *edcf_acp = &default_edcf_acparams[0];
4208 for (i_ac = 0; i_ac < AC_COUNT; i_ac++, edcf_acp++) {
4209 /* find out which ac this set of params applies to */
4210 aci = (edcf_acp->ACI & EDCF_ACI_MASK) >> EDCF_ACI_SHIFT;
4212 /* fill in shm ac params struct */
4213 txq_pars.txop = edcf_acp->TXOP;
4214 txq_pars.aifs = edcf_acp->ACI;
4216 /* CWmin = 2^(ECWmin) - 1 */
4217 txq_pars.cw_min = EDCF_ECW2CW(edcf_acp->ECW & EDCF_ECWMIN_MASK);
4218 /* CWmax = 2^(ECWmax) - 1 */
4219 txq_pars.cw_max = EDCF_ECW2CW((edcf_acp->ECW & EDCF_ECWMAX_MASK)
4220 >> EDCF_ECWMAX_SHIFT);
4221 brcms_c_wme_setparams(wlc, aci, &txq_pars, suspend);
4225 brcms_c_suspend_mac_and_wait(wlc);
4226 brcms_c_enable_mac(wlc);
4230 /* maintain LED behavior in down state */
4231 static void brcms_c_down_led_upd(struct brcms_c_info *wlc)
4234 * maintain LEDs while in down state, turn on sbclk if
4235 * not available yet. Turn on sbclk if necessary
4237 brcms_b_pllreq(wlc->hw, true, BRCMS_PLLREQ_FLIP);
4238 brcms_b_pllreq(wlc->hw, false, BRCMS_PLLREQ_FLIP);
4241 static void brcms_c_radio_monitor_start(struct brcms_c_info *wlc)
4243 /* Don't start the timer if HWRADIO feature is disabled */
4244 if (wlc->radio_monitor)
4247 wlc->radio_monitor = true;
4248 brcms_b_pllreq(wlc->hw, true, BRCMS_PLLREQ_RADIO_MON);
4249 brcms_add_timer(wlc->wl, wlc->radio_timer, TIMER_INTERVAL_RADIOCHK,
4253 void brcms_c_radio_disable(struct brcms_c_info *wlc)
4255 if (!wlc->pub->up) {
4256 brcms_c_down_led_upd(wlc);
4260 brcms_c_radio_monitor_start(wlc);
4261 brcms_down(wlc->wl);
4264 static void brcms_c_radio_enable(struct brcms_c_info *wlc)
4269 if (brcms_deviceremoved(wlc))
4275 bool brcms_c_radio_monitor_stop(struct brcms_c_info *wlc)
4277 if (!wlc->radio_monitor)
4280 wlc->radio_monitor = false;
4281 brcms_b_pllreq(wlc->hw, false, BRCMS_PLLREQ_RADIO_MON);
4282 return brcms_del_timer(wlc->wl, wlc->radio_timer);
4285 /* read hwdisable state and propagate to wlc flag */
4286 static void brcms_c_radio_hwdisable_upd(struct brcms_c_info *wlc)
4288 if (wlc->pub->hw_off)
4291 if (brcms_b_radio_read_hwdisabled(wlc->hw))
4292 mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
4294 mboolclr(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE);
4298 * centralized radio disable/enable function,
4299 * invoke radio enable/disable after updating hwradio status
4301 static void brcms_c_radio_upd(struct brcms_c_info *wlc)
4303 if (wlc->pub->radio_disabled)
4304 brcms_c_radio_disable(wlc);
4306 brcms_c_radio_enable(wlc);
4309 /* update hwradio status and return it */
4310 bool brcms_c_check_radio_disabled(struct brcms_c_info *wlc)
4312 brcms_c_radio_hwdisable_upd(wlc);
4314 return mboolisset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE) ?
4318 /* periodical query hw radio button while driver is "down" */
4319 static void brcms_c_radio_timer(void *arg)
4321 struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
4323 if (brcms_deviceremoved(wlc)) {
4324 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
4326 brcms_down(wlc->wl);
4330 /* cap mpc off count */
4331 if (wlc->mpc_offcnt < BRCMS_MPC_MAX_DELAYCNT)
4334 brcms_c_radio_hwdisable_upd(wlc);
4335 brcms_c_radio_upd(wlc);
4338 /* common low-level watchdog code */
4339 static void brcms_b_watchdog(void *arg)
4341 struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
4342 struct brcms_hardware *wlc_hw = wlc->hw;
4344 BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
4349 /* increment second count */
4352 /* Check for FIFO error interrupts */
4353 brcms_b_fifoerrors(wlc_hw);
4355 /* make sure RX dma has buffers */
4356 dma_rxfill(wlc->hw->di[RX_FIFO]);
4358 wlc_phy_watchdog(wlc_hw->band->pi);
4361 /* common watchdog code */
4362 static void brcms_c_watchdog(void *arg)
4364 struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
4366 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
4371 if (brcms_deviceremoved(wlc)) {
4372 wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
4374 brcms_down(wlc->wl);
4378 /* increment second count */
4381 /* delay radio disable */
4382 if (wlc->mpc_delay_off) {
4383 if (--wlc->mpc_delay_off == 0) {
4384 mboolset(wlc->pub->radio_disabled,
4385 WL_RADIO_MPC_DISABLE);
4386 if (wlc->mpc && brcms_c_ismpc(wlc))
4387 wlc->mpc_offcnt = 0;
4392 brcms_c_radio_mpc_upd(wlc);
4393 /* radio sync: sw/hw/mpc --> radio_disable/radio_enable */
4394 brcms_c_radio_hwdisable_upd(wlc);
4395 brcms_c_radio_upd(wlc);
4396 /* if radio is disable, driver may be down, quit here */
4397 if (wlc->pub->radio_disabled)
4400 brcms_b_watchdog(wlc);
4403 * occasionally sample mac stat counters to
4404 * detect 16-bit counter wrap
4406 if ((wlc->pub->now % SW_TIMER_MAC_STAT_UPD) == 0)
4407 brcms_c_statsupd(wlc);
4409 if (BRCMS_ISNPHY(wlc->band) &&
4410 ((wlc->pub->now - wlc->tempsense_lasttime) >=
4411 BRCMS_TEMPSENSE_PERIOD)) {
4412 wlc->tempsense_lasttime = wlc->pub->now;
4413 brcms_c_tempsense_upd(wlc);
4417 static void brcms_c_watchdog_by_timer(void *arg)
4419 brcms_c_watchdog(arg);
4422 bool brcms_c_timers_init(struct brcms_c_info *wlc, int unit)
4424 wlc->wdtimer = brcms_init_timer(wlc->wl, brcms_c_watchdog_by_timer,
4426 if (!wlc->wdtimer) {
4427 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for wdtimer "
4432 wlc->radio_timer = brcms_init_timer(wlc->wl, brcms_c_radio_timer,
4434 if (!wlc->radio_timer) {
4435 wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for radio_timer "
4447 * Initialize brcms_c_info default values ...
4448 * may get overrides later in this function
4450 void brcms_c_info_init(struct brcms_c_info *wlc, int unit)
4454 /* Save our copy of the chanspec */
4455 wlc->chanspec = ch20mhz_chspec(1);
4457 /* various 802.11g modes */
4458 wlc->shortslot = false;
4459 wlc->shortslot_override = BRCMS_SHORTSLOT_AUTO;
4461 brcms_c_protection_upd(wlc, BRCMS_PROT_G_OVR, BRCMS_PROTECTION_AUTO);
4462 brcms_c_protection_upd(wlc, BRCMS_PROT_G_SPEC, false);
4464 brcms_c_protection_upd(wlc, BRCMS_PROT_N_CFG_OVR,
4465 BRCMS_PROTECTION_AUTO);
4466 brcms_c_protection_upd(wlc, BRCMS_PROT_N_CFG, BRCMS_N_PROTECTION_OFF);
4467 brcms_c_protection_upd(wlc, BRCMS_PROT_N_NONGF_OVR,
4468 BRCMS_PROTECTION_AUTO);
4469 brcms_c_protection_upd(wlc, BRCMS_PROT_N_NONGF, false);
4470 brcms_c_protection_upd(wlc, BRCMS_PROT_N_PAM_OVR, AUTO);
4472 brcms_c_protection_upd(wlc, BRCMS_PROT_OVERLAP,
4473 BRCMS_PROTECTION_CTL_OVERLAP);
4475 /* 802.11g draft 4.0 NonERP elt advertisement */
4476 wlc->include_legacy_erp = true;
4478 wlc->stf->ant_rx_ovr = ANT_RX_DIV_DEF;
4479 wlc->stf->txant = ANT_TX_DEF;
4481 wlc->prb_resp_timeout = BRCMS_PRB_RESP_TIMEOUT;
4483 wlc->usr_fragthresh = DOT11_DEFAULT_FRAG_LEN;
4484 for (i = 0; i < NFIFO; i++)
4485 wlc->fragthresh[i] = DOT11_DEFAULT_FRAG_LEN;
4486 wlc->RTSThresh = DOT11_DEFAULT_RTS_LEN;
4488 /* default rate fallback retry limits */
4489 wlc->SFBL = RETRY_SHORT_FB;
4490 wlc->LFBL = RETRY_LONG_FB;
4492 /* default mac retry limits */
4493 wlc->SRL = RETRY_SHORT_DEF;
4494 wlc->LRL = RETRY_LONG_DEF;
4496 /* WME QoS mode is Auto by default */
4497 wlc->pub->_ampdu = AMPDU_AGG_HOST;
4498 wlc->pub->bcmerror = 0;
4500 /* initialize mpc delay */
4501 wlc->mpc_delay_off = wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
4504 static uint brcms_c_attach_module(struct brcms_c_info *wlc)
4508 unit = wlc->pub->unit;
4510 wlc->asi = brcms_c_antsel_attach(wlc);
4511 if (wlc->asi == NULL) {
4512 wiphy_err(wlc->wiphy, "wl%d: attach: antsel_attach "
4518 wlc->ampdu = brcms_c_ampdu_attach(wlc);
4519 if (wlc->ampdu == NULL) {
4520 wiphy_err(wlc->wiphy, "wl%d: attach: ampdu_attach "
4526 if ((brcms_c_stf_attach(wlc) != 0)) {
4527 wiphy_err(wlc->wiphy, "wl%d: attach: stf_attach "
4536 struct brcms_pub *brcms_c_pub(struct brcms_c_info *wlc)
4542 * run backplane attach, init nvram
4544 * initialize software state for each core and band
4545 * put the whole chip in reset(driver down state), no clock
4547 static int brcms_b_attach(struct brcms_c_info *wlc, u16 vendor, u16 device,
4548 uint unit, bool piomode, void __iomem *regsva,
4549 struct pci_dev *btparam)
4551 struct brcms_hardware *wlc_hw;
4552 struct d11regs __iomem *regs;
4553 char *macaddr = NULL;
4558 struct shared_phy_params sha_params;
4559 struct wiphy *wiphy = wlc->wiphy;
4563 BCMMSG(wlc->wiphy, "wl%d: vendor 0x%x device 0x%x\n", unit, vendor,
4570 wlc_hw->unit = unit;
4571 wlc_hw->band = wlc_hw->bandstate[0];
4572 wlc_hw->_piomode = piomode;
4574 /* populate struct brcms_hardware with default values */
4575 brcms_b_info_init(wlc_hw);
4578 * Do the hardware portion of the attach. Also initialize software
4579 * state that depends on the particular hardware we are running.
4581 wlc_hw->sih = ai_attach(regsva, btparam,
4582 &wlc_hw->vars, &wlc_hw->vars_size);
4583 if (wlc_hw->sih == NULL) {
4584 wiphy_err(wiphy, "wl%d: brcms_b_attach: si_attach failed\n",
4589 vars = wlc_hw->vars;
4592 * Get vendid/devid nvram overwrites, which could be different
4593 * than those the BIOS recognizes for devices on PCMCIA_BUS,
4594 * SDIO_BUS, and SROMless devices on PCI_BUS.
4596 var = getvar(wlc_hw->sih, "vendid");
4597 if (var && !kstrtoul(var, 0, &res)) {
4599 wiphy_err(wiphy, "Overriding vendor id = 0x%x\n",
4602 var = getvar(wlc_hw->sih, "devid");
4603 if (var && !kstrtoul(var, 0, &res)) {
4604 u16 devid = (u16)res;
4605 if (devid != 0xffff) {
4607 wiphy_err(wiphy, "Overriding device id = 0x%x"
4612 /* verify again the device is supported */
4613 if (!brcms_c_chipmatch(vendor, device)) {
4614 wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported "
4615 "vendor/device (0x%x/0x%x)\n",
4616 unit, vendor, device);
4621 wlc_hw->vendorid = vendor;
4622 wlc_hw->deviceid = device;
4624 /* set bar0 window to point at D11 core */
4625 wlc_hw->regs = (struct d11regs __iomem *)
4626 ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
4627 wlc_hw->corerev = ai_corerev(wlc_hw->sih);
4629 regs = wlc_hw->regs;
4631 wlc->regs = wlc_hw->regs;
4633 /* validate chip, chiprev and corerev */
4634 if (!brcms_c_isgoodchip(wlc_hw)) {
4639 /* initialize power control registers */
4640 ai_clkctl_init(wlc_hw->sih);
4642 /* request fastclock and force fastclock for the rest of attach
4643 * bring the d11 core out of reset.
4644 * For PMU chips, the first wlc_clkctl_clk is no-op since core-clk
4645 * is still false; But it will be called again inside wlc_corereset,
4646 * after d11 is out of reset.
4648 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
4649 brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
4651 if (!brcms_b_validate_chip_access(wlc_hw)) {
4652 wiphy_err(wiphy, "wl%d: brcms_b_attach: validate_chip_access "
4658 /* get the board rev, used just below */
4659 j = getintvar(wlc_hw->sih, "boardrev");
4660 /* promote srom boardrev of 0xFF to 1 */
4661 if (j == BOARDREV_PROMOTABLE)
4662 j = BOARDREV_PROMOTED;
4663 wlc_hw->boardrev = (u16) j;
4664 if (!brcms_c_validboardtype(wlc_hw)) {
4665 wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported Broadcom "
4666 "board type (0x%x)" " or revision level (0x%x)\n",
4667 unit, wlc_hw->sih->boardtype, wlc_hw->boardrev);
4671 wlc_hw->sromrev = (u8) getintvar(wlc_hw->sih, "sromrev");
4672 wlc_hw->boardflags = (u32) getintvar(wlc_hw->sih, "boardflags");
4673 wlc_hw->boardflags2 = (u32) getintvar(wlc_hw->sih, "boardflags2");
4675 if (wlc_hw->boardflags & BFL_NOPLLDOWN)
4676 brcms_b_pllreq(wlc_hw, true, BRCMS_PLLREQ_SHARED);
4678 /* check device id(srom, nvram etc.) to set bands */
4679 if (wlc_hw->deviceid == BCM43224_D11N_ID ||
4680 wlc_hw->deviceid == BCM43224_D11N_ID_VEN1)
4681 /* Dualband boards */
4682 wlc_hw->_nbands = 2;
4684 wlc_hw->_nbands = 1;
4686 if ((wlc_hw->sih->chip == BCM43225_CHIP_ID))
4687 wlc_hw->_nbands = 1;
4689 /* BMAC_NOTE: remove init of pub values when brcms_c_attach()
4690 * unconditionally does the init of these values
4692 wlc->vendorid = wlc_hw->vendorid;
4693 wlc->deviceid = wlc_hw->deviceid;
4694 wlc->pub->sih = wlc_hw->sih;
4695 wlc->pub->corerev = wlc_hw->corerev;
4696 wlc->pub->sromrev = wlc_hw->sromrev;
4697 wlc->pub->boardrev = wlc_hw->boardrev;
4698 wlc->pub->boardflags = wlc_hw->boardflags;
4699 wlc->pub->boardflags2 = wlc_hw->boardflags2;
4700 wlc->pub->_nbands = wlc_hw->_nbands;
4702 wlc_hw->physhim = wlc_phy_shim_attach(wlc_hw, wlc->wl, wlc);
4704 if (wlc_hw->physhim == NULL) {
4705 wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_shim_attach "
4711 /* pass all the parameters to wlc_phy_shared_attach in one struct */
4712 sha_params.sih = wlc_hw->sih;
4713 sha_params.physhim = wlc_hw->physhim;
4714 sha_params.unit = unit;
4715 sha_params.corerev = wlc_hw->corerev;
4716 sha_params.vars = vars;
4717 sha_params.vid = wlc_hw->vendorid;
4718 sha_params.did = wlc_hw->deviceid;
4719 sha_params.chip = wlc_hw->sih->chip;
4720 sha_params.chiprev = wlc_hw->sih->chiprev;
4721 sha_params.chippkg = wlc_hw->sih->chippkg;
4722 sha_params.sromrev = wlc_hw->sromrev;
4723 sha_params.boardtype = wlc_hw->sih->boardtype;
4724 sha_params.boardrev = wlc_hw->boardrev;
4725 sha_params.boardvendor = wlc_hw->sih->boardvendor;
4726 sha_params.boardflags = wlc_hw->boardflags;
4727 sha_params.boardflags2 = wlc_hw->boardflags2;
4728 sha_params.buscorerev = wlc_hw->sih->buscorerev;
4730 /* alloc and save pointer to shared phy state area */
4731 wlc_hw->phy_sh = wlc_phy_shared_attach(&sha_params);
4732 if (!wlc_hw->phy_sh) {
4737 /* initialize software state for each core and band */
4738 for (j = 0; j < wlc_hw->_nbands; j++) {
4740 * band0 is always 2.4Ghz
4741 * band1, if present, is 5Ghz
4744 brcms_c_setxband(wlc_hw, j);
4746 wlc_hw->band->bandunit = j;
4747 wlc_hw->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G;
4748 wlc->band->bandunit = j;
4749 wlc->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G;
4750 wlc->core->coreidx = ai_coreidx(wlc_hw->sih);
4752 wlc_hw->machwcap = R_REG(®s->machwcap);
4753 wlc_hw->machwcap_backup = wlc_hw->machwcap;
4755 /* init tx fifo size */
4756 wlc_hw->xmtfifo_sz =
4757 xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)];
4759 /* Get a phy for this band */
4761 wlc_phy_attach(wlc_hw->phy_sh, regs,
4762 wlc_hw->band->bandtype, vars,
4764 if (wlc_hw->band->pi == NULL) {
4765 wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_"
4766 "attach failed\n", unit);
4771 wlc_phy_machwcap_set(wlc_hw->band->pi, wlc_hw->machwcap);
4773 wlc_phy_get_phyversion(wlc_hw->band->pi, &wlc_hw->band->phytype,
4774 &wlc_hw->band->phyrev,
4775 &wlc_hw->band->radioid,
4776 &wlc_hw->band->radiorev);
4777 wlc_hw->band->abgphy_encore =
4778 wlc_phy_get_encore(wlc_hw->band->pi);
4779 wlc->band->abgphy_encore = wlc_phy_get_encore(wlc_hw->band->pi);
4780 wlc_hw->band->core_flags =
4781 wlc_phy_get_coreflags(wlc_hw->band->pi);
4783 /* verify good phy_type & supported phy revision */
4784 if (BRCMS_ISNPHY(wlc_hw->band)) {
4785 if (NCONF_HAS(wlc_hw->band->phyrev))
4789 } else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
4790 if (LCNCONF_HAS(wlc_hw->band->phyrev))
4796 wiphy_err(wiphy, "wl%d: brcms_b_attach: unsupported "
4797 "phy type/rev (%d/%d)\n", unit,
4798 wlc_hw->band->phytype, wlc_hw->band->phyrev);
4805 * BMAC_NOTE: wlc->band->pi should not be set below and should
4806 * be done in the high level attach. However we can not make
4807 * that change until all low level access is changed to
4808 * wlc_hw->band->pi. Instead do the wlc->band->pi init below,
4809 * keeping wlc_hw->band->pi as well for incremental update of
4810 * low level fns, and cut over low only init when all fns
4813 wlc->band->pi = wlc_hw->band->pi;
4814 wlc->band->phytype = wlc_hw->band->phytype;
4815 wlc->band->phyrev = wlc_hw->band->phyrev;
4816 wlc->band->radioid = wlc_hw->band->radioid;
4817 wlc->band->radiorev = wlc_hw->band->radiorev;
4819 /* default contention windows size limits */
4820 wlc_hw->band->CWmin = APHY_CWMIN;
4821 wlc_hw->band->CWmax = PHY_CWMAX;
4823 if (!brcms_b_attach_dmapio(wlc, j, wme)) {
4829 /* disable core to match driver "down" state */
4830 brcms_c_coredisable(wlc_hw);
4832 /* Match driver "down" state */
4833 ai_pci_down(wlc_hw->sih);
4835 /* register sb interrupt callback functions */
4836 ai_register_intr_callback(wlc_hw->sih, (void *)brcms_c_wlintrsoff,
4837 (void *)brcms_c_wlintrsrestore, NULL, wlc);
4839 /* turn off pll and xtal to match driver "down" state */
4840 brcms_b_xtal(wlc_hw, OFF);
4842 /* *******************************************************************
4843 * The hardware is in the DOWN state at this point. D11 core
4844 * or cores are in reset with clocks off, and the board PLLs
4845 * are off if possible.
4847 * Beyond this point, wlc->sbclk == false and chip registers
4848 * should not be touched.
4849 *********************************************************************
4852 /* init etheraddr state variables */
4853 macaddr = brcms_c_get_macaddr(wlc_hw);
4854 if (macaddr == NULL) {
4855 wiphy_err(wiphy, "wl%d: brcms_b_attach: macaddr not found\n",
4860 if (!mac_pton(macaddr, wlc_hw->etheraddr) ||
4861 is_broadcast_ether_addr(wlc_hw->etheraddr) ||
4862 is_zero_ether_addr(wlc_hw->etheraddr)) {
4863 wiphy_err(wiphy, "wl%d: brcms_b_attach: bad macaddr %s\n",
4870 "deviceid 0x%x nbands %d board 0x%x macaddr: %s\n",
4871 wlc_hw->deviceid, wlc_hw->_nbands,
4872 wlc_hw->sih->boardtype, macaddr);
4877 wiphy_err(wiphy, "wl%d: brcms_b_attach: failed with err %d\n", unit,
4882 static void brcms_c_attach_antgain_init(struct brcms_c_info *wlc)
4885 unit = wlc->pub->unit;
4887 if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) {
4888 /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */
4889 wlc->band->antgain = 8;
4890 } else if (wlc->band->antgain == -1) {
4891 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
4892 " srom, using 2dB\n", unit, __func__);
4893 wlc->band->antgain = 8;
4896 /* Older sroms specified gain in whole dbm only. In order
4897 * be able to specify qdbm granularity and remain backward
4898 * compatible the whole dbms are now encoded in only
4899 * low 6 bits and remaining qdbms are encoded in the hi 2 bits.
4900 * 6 bit signed number ranges from -32 - 31.
4904 * 0xc1 = 1.75 db (1 + 3 quarters),
4905 * 0x3f = -1 (-1 + 0 quarters),
4906 * 0x7f = -.75 (-1 + 1 quarters) = -3 qdbm.
4907 * 0xbf = -.50 (-1 + 2 quarters) = -2 qdbm.
4909 gain = wlc->band->antgain & 0x3f;
4910 gain <<= 2; /* Sign extend */
4912 fract = (wlc->band->antgain & 0xc0) >> 6;
4913 wlc->band->antgain = 4 * gain + fract;
4917 static bool brcms_c_attach_stf_ant_init(struct brcms_c_info *wlc)
4923 struct si_pub *sih = wlc->hw->sih;
4925 unit = wlc->pub->unit;
4926 vars = wlc->pub->vars;
4927 bandtype = wlc->band->bandtype;
4929 /* get antennas available */
4930 aa = (s8) getintvar(sih, bandtype == BRCM_BAND_5G ? "aa5g" : "aa2g");
4932 aa = (s8) getintvar(sih,
4933 bandtype == BRCM_BAND_5G ? "aa1" : "aa0");
4934 if ((aa < 1) || (aa > 15)) {
4935 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in"
4936 " srom (0x%x), using 3\n", unit, __func__, aa);
4940 /* reset the defaults if we have a single antenna */
4942 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_0;
4943 wlc->stf->txant = ANT_TX_FORCE_0;
4944 } else if (aa == 2) {
4945 wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_1;
4946 wlc->stf->txant = ANT_TX_FORCE_1;
4950 /* Compute Antenna Gain */
4951 wlc->band->antgain = (s8) getintvar(sih, bandtype == BRCM_BAND_5G ?
4953 brcms_c_attach_antgain_init(wlc);
4958 static void brcms_c_bss_default_init(struct brcms_c_info *wlc)
4961 struct brcms_band *band;
4962 struct brcms_bss_info *bi = wlc->default_bss;
4964 /* init default and target BSS with some sane initial values */
4965 memset((char *)(bi), 0, sizeof(struct brcms_bss_info));
4966 bi->beacon_period = BEACON_INTERVAL_DEFAULT;
4968 /* fill the default channel as the first valid channel
4969 * starting from the 2G channels
4971 chanspec = ch20mhz_chspec(1);
4972 wlc->home_chanspec = bi->chanspec = chanspec;
4974 /* find the band of our default channel */
4976 if (wlc->pub->_nbands > 1 &&
4977 band->bandunit != chspec_bandunit(chanspec))
4978 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
4980 /* init bss rates to the band specific default rate set */
4981 brcms_c_rateset_default(&bi->rateset, NULL, band->phytype,
4982 band->bandtype, false, BRCMS_RATE_MASK_FULL,
4983 (bool) (wlc->pub->_n_enab & SUPPORT_11N),
4984 brcms_chspec_bw(chanspec), wlc->stf->txstreams);
4986 if (wlc->pub->_n_enab & SUPPORT_11N)
4987 bi->flags |= BRCMS_BSS_HT;
4990 static struct brcms_txq_info *brcms_c_txq_alloc(struct brcms_c_info *wlc)
4992 struct brcms_txq_info *qi, *p;
4994 qi = kzalloc(sizeof(struct brcms_txq_info), GFP_ATOMIC);
4997 * Have enough room for control packets along with HI watermark
4998 * Also, add room to txq for total psq packets if all the SCBs
4999 * leave PS mode. The watermark for flowcontrol to OS packets
5000 * will remain the same
5002 brcmu_pktq_init(&qi->q, BRCMS_PREC_COUNT,
5003 2 * BRCMS_DATAHIWAT + PKTQ_LEN_DEFAULT);
5005 /* add this queue to the the global list */
5008 wlc->tx_queues = qi;
5010 while (p->next != NULL)
5018 static void brcms_c_txq_free(struct brcms_c_info *wlc,
5019 struct brcms_txq_info *qi)
5021 struct brcms_txq_info *p;
5026 /* remove the queue from the linked list */
5029 wlc->tx_queues = p->next;
5031 while (p != NULL && p->next != qi)
5034 p->next = p->next->next;
5040 static void brcms_c_update_mimo_band_bwcap(struct brcms_c_info *wlc, u8 bwcap)
5043 struct brcms_band *band;
5045 for (i = 0; i < wlc->pub->_nbands; i++) {
5046 band = wlc->bandstate[i];
5047 if (band->bandtype == BRCM_BAND_5G) {
5048 if ((bwcap == BRCMS_N_BW_40ALL)
5049 || (bwcap == BRCMS_N_BW_20IN2G_40IN5G))
5050 band->mimo_cap_40 = true;
5052 band->mimo_cap_40 = false;
5054 if (bwcap == BRCMS_N_BW_40ALL)
5055 band->mimo_cap_40 = true;
5057 band->mimo_cap_40 = false;
5063 * The common driver entry routine. Error codes should be unique
5065 struct brcms_c_info *
5066 brcms_c_attach(struct brcms_info *wl, u16 vendor, u16 device, uint unit,
5067 bool piomode, void __iomem *regsva, struct pci_dev *btparam,
5070 struct brcms_c_info *wlc;
5073 struct brcms_pub *pub;
5075 /* allocate struct brcms_c_info state and its substructures */
5076 wlc = (struct brcms_c_info *) brcms_c_attach_malloc(unit, &err, device);
5079 wlc->wiphy = wl->wiphy;
5086 wlc->band = wlc->bandstate[0];
5087 wlc->core = wlc->corestate;
5090 pub->_piomode = piomode;
5091 wlc->bandinit_pending = false;
5093 /* populate struct brcms_c_info with default values */
5094 brcms_c_info_init(wlc, unit);
5096 /* update sta/ap related parameters */
5097 brcms_c_ap_upd(wlc);
5100 * low level attach steps(all hw accesses go
5101 * inside, no more in rest of the attach)
5103 err = brcms_b_attach(wlc, vendor, device, unit, piomode, regsva,
5108 brcms_c_protection_upd(wlc, BRCMS_PROT_N_PAM_OVR, OFF);
5110 pub->phy_11ncapable = BRCMS_PHY_11N_CAP(wlc->band);
5112 /* propagate *vars* from BMAC driver to high driver */
5113 brcms_b_copyfrom_vars(wlc->hw, &pub->vars, &wlc->vars_size);
5116 /* set maximum allowed duty cycle */
5117 wlc->tx_duty_cycle_ofdm =
5118 (u16) getintvar(wlc->hw->sih, "tx_duty_cycle_ofdm");
5119 wlc->tx_duty_cycle_cck =
5120 (u16) getintvar(wlc->hw->sih, "tx_duty_cycle_cck");
5122 brcms_c_stf_phy_chain_calc(wlc);
5124 /* txchain 1: txant 0, txchain 2: txant 1 */
5125 if (BRCMS_ISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
5126 wlc->stf->txant = wlc->stf->hw_txchain - 1;
5128 /* push to BMAC driver */
5129 wlc_phy_stf_chain_init(wlc->band->pi, wlc->stf->hw_txchain,
5130 wlc->stf->hw_rxchain);
5132 /* pull up some info resulting from the low attach */
5133 for (i = 0; i < NFIFO; i++)
5134 wlc->core->txavail[i] = wlc->hw->txavail[i];
5136 memcpy(&wlc->perm_etheraddr, &wlc->hw->etheraddr, ETH_ALEN);
5137 memcpy(&pub->cur_etheraddr, &wlc->hw->etheraddr, ETH_ALEN);
5139 for (j = 0; j < wlc->pub->_nbands; j++) {
5140 wlc->band = wlc->bandstate[j];
5142 if (!brcms_c_attach_stf_ant_init(wlc)) {
5147 /* default contention windows size limits */
5148 wlc->band->CWmin = APHY_CWMIN;
5149 wlc->band->CWmax = PHY_CWMAX;
5151 /* init gmode value */
5152 if (wlc->band->bandtype == BRCM_BAND_2G) {
5153 wlc->band->gmode = GMODE_AUTO;
5154 brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER,
5158 /* init _n_enab supported mode */
5159 if (BRCMS_PHY_11N_CAP(wlc->band)) {
5160 pub->_n_enab = SUPPORT_11N;
5161 brcms_c_protection_upd(wlc, BRCMS_PROT_N_USER,
5163 SUPPORT_11N) ? WL_11N_2x2 :
5167 /* init per-band default rateset, depend on band->gmode */
5168 brcms_default_rateset(wlc, &wlc->band->defrateset);
5170 /* fill in hw_rateset */
5171 brcms_c_rateset_filter(&wlc->band->defrateset,
5172 &wlc->band->hw_rateset, false,
5173 BRCMS_RATES_CCK_OFDM, BRCMS_RATE_MASK,
5174 (bool) (wlc->pub->_n_enab & SUPPORT_11N));
5178 * update antenna config due to
5179 * wlc->stf->txant/txchain/ant_rx_ovr change
5181 brcms_c_stf_phy_txant_upd(wlc);
5183 /* attach each modules */
5184 err = brcms_c_attach_module(wlc);
5188 if (!brcms_c_timers_init(wlc, unit)) {
5189 wiphy_err(wl->wiphy, "wl%d: %s: init_timer failed\n", unit,
5195 /* depend on rateset, gmode */
5196 wlc->cmi = brcms_c_channel_mgr_attach(wlc);
5198 wiphy_err(wl->wiphy, "wl%d: %s: channel_mgr_attach failed"
5199 "\n", unit, __func__);
5204 /* init default when all parameters are ready, i.e. ->rateset */
5205 brcms_c_bss_default_init(wlc);
5208 * Complete the wlc default state initializations..
5211 /* allocate our initial queue */
5212 wlc->pkt_queue = brcms_c_txq_alloc(wlc);
5213 if (wlc->pkt_queue == NULL) {
5214 wiphy_err(wl->wiphy, "wl%d: %s: failed to malloc tx queue\n",
5220 wlc->bsscfg->wlc = wlc;
5222 wlc->mimoft = FT_HT;
5223 wlc->mimo_40txbw = AUTO;
5224 wlc->ofdm_40txbw = AUTO;
5225 wlc->cck_40txbw = AUTO;
5226 brcms_c_update_mimo_band_bwcap(wlc, BRCMS_N_BW_20IN2G_40IN5G);
5228 /* Set default values of SGI */
5229 if (BRCMS_SGI_CAP_PHY(wlc)) {
5230 brcms_c_ht_update_sgi_rx(wlc, (BRCMS_N_SGI_20 |
5232 } else if (BRCMS_ISSSLPNPHY(wlc->band)) {
5233 brcms_c_ht_update_sgi_rx(wlc, (BRCMS_N_SGI_20 |
5236 brcms_c_ht_update_sgi_rx(wlc, 0);
5239 /* initialize radio_mpc_disable according to wlc->mpc */
5240 brcms_c_radio_mpc_upd(wlc);
5241 brcms_b_antsel_set(wlc->hw, wlc->asi->antsel_avail);
5249 wiphy_err(wl->wiphy, "wl%d: %s: failed with err %d\n",
5250 unit, __func__, err);
5252 brcms_c_detach(wlc);
5259 static void brcms_c_timers_deinit(struct brcms_c_info *wlc)
5261 /* free timer state */
5263 brcms_free_timer(wlc->wl, wlc->wdtimer);
5264 wlc->wdtimer = NULL;
5266 if (wlc->radio_timer) {
5267 brcms_free_timer(wlc->wl, wlc->radio_timer);
5268 wlc->radio_timer = NULL;
5272 static void brcms_c_detach_module(struct brcms_c_info *wlc)
5275 brcms_c_antsel_detach(wlc->asi);
5280 brcms_c_ampdu_detach(wlc->ampdu);
5284 brcms_c_stf_detach(wlc);
5290 static int brcms_b_detach(struct brcms_c_info *wlc)
5293 struct brcms_hw_band *band;
5294 struct brcms_hardware *wlc_hw = wlc->hw;
5301 * detach interrupt sync mechanism since interrupt is disabled
5302 * and per-port interrupt object may has been freed. this must
5303 * be done before sb core switch
5305 ai_deregister_intr_callback(wlc_hw->sih);
5306 ai_pci_sleep(wlc_hw->sih);
5309 brcms_b_detach_dmapio(wlc_hw);
5311 band = wlc_hw->band;
5312 for (i = 0; i < wlc_hw->_nbands; i++) {
5314 /* Detach this band's phy */
5315 wlc_phy_detach(band->pi);
5318 band = wlc_hw->bandstate[OTHERBANDUNIT(wlc)];
5321 /* Free shared phy state */
5322 kfree(wlc_hw->phy_sh);
5324 wlc_phy_shim_detach(wlc_hw->physhim);
5327 kfree(wlc_hw->vars);
5328 wlc_hw->vars = NULL;
5331 ai_detach(wlc_hw->sih);
5340 * Return a count of the number of driver callbacks still pending.
5342 * General policy is that brcms_c_detach can only dealloc/free software states.
5343 * It can NOT touch hardware registers since the d11core may be in reset and
5344 * clock may not be available.
5345 * One exception is sb register access, which is possible if crystal is turned
5346 * on after "down" state, driver should avoid software timer with the exception
5349 uint brcms_c_detach(struct brcms_c_info *wlc)
5356 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
5358 callbacks += brcms_b_detach(wlc);
5360 /* delete software timers */
5361 if (!brcms_c_radio_monitor_stop(wlc))
5364 brcms_c_channel_mgr_detach(wlc->cmi);
5366 brcms_c_timers_deinit(wlc);
5368 brcms_c_detach_module(wlc);
5371 while (wlc->tx_queues != NULL)
5372 brcms_c_txq_free(wlc, wlc->tx_queues);
5374 brcms_c_detach_mfree(wlc);
5378 /* update state that depends on the current value of "ap" */
5379 void brcms_c_ap_upd(struct brcms_c_info *wlc)
5381 /* STA-BSS; short capable */
5382 wlc->PLCPHdr_override = BRCMS_PLCP_SHORT;
5389 * return true if Minimum Power Consumption should
5390 * be entered, false otherwise
5392 bool brcms_c_is_non_delay_mpc(struct brcms_c_info *wlc)
5397 bool brcms_c_ismpc(struct brcms_c_info *wlc)
5399 return (wlc->mpc_delay_off == 0) && (brcms_c_is_non_delay_mpc(wlc));
5402 void brcms_c_radio_mpc_upd(struct brcms_c_info *wlc)
5404 bool mpc_radio, radio_state;
5407 * Clear the WL_RADIO_MPC_DISABLE bit when mpc feature is disabled
5408 * in case the WL_RADIO_MPC_DISABLE bit was set. Stop the radio
5409 * monitor also when WL_RADIO_MPC_DISABLE is the only reason that
5410 * the radio is going down.
5413 if (!wlc->pub->radio_disabled)
5415 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
5416 brcms_c_radio_upd(wlc);
5417 if (!wlc->pub->radio_disabled)
5418 brcms_c_radio_monitor_stop(wlc);
5423 * sync ismpc logic with WL_RADIO_MPC_DISABLE bit in
5424 * wlc->pub->radio_disabled to go ON, always call radio_upd
5425 * synchronously to go OFF, postpone radio_upd to later when
5426 * context is safe(e.g. watchdog)
5429 (mboolisset(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE) ? OFF :
5431 mpc_radio = (brcms_c_ismpc(wlc) == true) ? OFF : ON;
5433 if (radio_state == ON && mpc_radio == OFF)
5434 wlc->mpc_delay_off = wlc->mpc_dlycnt;
5435 else if (radio_state == OFF && mpc_radio == ON) {
5436 mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
5437 brcms_c_radio_upd(wlc);
5438 if (wlc->mpc_offcnt < BRCMS_MPC_THRESHOLD)
5439 wlc->mpc_dlycnt = BRCMS_MPC_MAX_DELAYCNT;
5441 wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
5444 * Below logic is meant to capture the transition from mpc off
5445 * to mpc on for reasons other than wlc->mpc_delay_off keeping
5446 * the mpc off. In that case reset wlc->mpc_delay_off to
5447 * wlc->mpc_dlycnt, so that we restart the countdown of mpc_delay_off
5449 if ((wlc->prev_non_delay_mpc == false) &&
5450 (brcms_c_is_non_delay_mpc(wlc) == true) && wlc->mpc_delay_off)
5451 wlc->mpc_delay_off = wlc->mpc_dlycnt;
5453 wlc->prev_non_delay_mpc = brcms_c_is_non_delay_mpc(wlc);
5455 /* Initialize just the hardware when coming out of POR or S3/S5 system states */
5456 static void brcms_b_hw_up(struct brcms_hardware *wlc_hw)
5458 if (wlc_hw->wlc->pub->hw_up)
5461 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
5464 * Enable pll and xtal, initialize the power control registers,
5465 * and force fastclock for the remainder of brcms_c_up().
5467 brcms_b_xtal(wlc_hw, ON);
5468 ai_clkctl_init(wlc_hw->sih);
5469 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
5471 ai_pci_fixcfg(wlc_hw->sih);
5474 * AI chip doesn't restore bar0win2 on
5475 * hibernation/resume, need sw fixup
5477 if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
5478 (wlc_hw->sih->chip == BCM43225_CHIP_ID))
5479 wlc_hw->regs = (struct d11regs __iomem *)
5480 ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
5483 * Inform phy that a POR reset has occurred so
5484 * it does a complete phy init
5486 wlc_phy_por_inform(wlc_hw->band->pi);
5488 wlc_hw->ucode_loaded = false;
5489 wlc_hw->wlc->pub->hw_up = true;
5491 if ((wlc_hw->boardflags & BFL_FEM)
5492 && (wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
5494 (wlc_hw->boardrev >= 0x1250
5495 && (wlc_hw->boardflags & BFL_FEM_BT)))
5496 ai_epa_4313war(wlc_hw->sih);
5500 static int brcms_b_up_prep(struct brcms_hardware *wlc_hw)
5504 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
5507 * Enable pll and xtal, initialize the power control registers,
5508 * and force fastclock for the remainder of brcms_c_up().
5510 brcms_b_xtal(wlc_hw, ON);
5511 ai_clkctl_init(wlc_hw->sih);
5512 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
5515 * Configure pci/pcmcia here instead of in brcms_c_attach()
5516 * to allow mfg hotswap: down, hotswap (chip power cycle), up.
5518 coremask = (1 << wlc_hw->wlc->core->coreidx);
5520 ai_pci_setup(wlc_hw->sih, coremask);
5523 * Need to read the hwradio status here to cover the case where the
5524 * system is loaded with the hw radio disabled. We do not want to
5525 * bring the driver up in this case.
5527 if (brcms_b_radio_read_hwdisabled(wlc_hw)) {
5528 /* put SB PCI in down state again */
5529 ai_pci_down(wlc_hw->sih);
5530 brcms_b_xtal(wlc_hw, OFF);
5534 ai_pci_up(wlc_hw->sih);
5536 /* reset the d11 core */
5537 brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
5542 static int brcms_b_up_finish(struct brcms_hardware *wlc_hw)
5544 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
5547 wlc_phy_hw_state_upd(wlc_hw->band->pi, true);
5549 /* FULLY enable dynamic power control and d11 core interrupt */
5550 brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
5551 brcms_intrson(wlc_hw->wlc->wl);
5556 * Write WME tunable parameters for retransmit/max rate
5557 * from wlc struct to ucode
5559 static void brcms_c_wme_retries_write(struct brcms_c_info *wlc)
5563 /* Need clock to do this */
5567 for (ac = 0; ac < AC_COUNT; ac++)
5568 brcms_b_write_shm(wlc->hw, M_AC_TXLMT_ADDR(ac),
5569 wlc->wme_retries[ac]);
5572 /* make interface operational */
5573 int brcms_c_up(struct brcms_c_info *wlc)
5575 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
5577 /* HW is turned off so don't try to access it */
5578 if (wlc->pub->hw_off || brcms_deviceremoved(wlc))
5581 if (!wlc->pub->hw_up) {
5582 brcms_b_hw_up(wlc->hw);
5583 wlc->pub->hw_up = true;
5586 if ((wlc->pub->boardflags & BFL_FEM)
5587 && (wlc->pub->sih->chip == BCM4313_CHIP_ID)) {
5588 if (wlc->pub->boardrev >= 0x1250
5589 && (wlc->pub->boardflags & BFL_FEM_BT))
5590 brcms_b_mhf(wlc->hw, MHF5, MHF5_4313_GPIOCTRL,
5591 MHF5_4313_GPIOCTRL, BRCM_BAND_ALL);
5593 brcms_b_mhf(wlc->hw, MHF4, MHF4_EXTPA_ENABLE,
5594 MHF4_EXTPA_ENABLE, BRCM_BAND_ALL);
5598 * Need to read the hwradio status here to cover the case where the
5599 * system is loaded with the hw radio disabled. We do not want to bring
5600 * the driver up in this case. If radio is disabled, abort up, lower
5601 * power, start radio timer and return 0(for NDIS) don't call
5602 * radio_update to avoid looping brcms_c_up.
5604 * brcms_b_up_prep() returns either 0 or -BCME_RADIOOFF only
5606 if (!wlc->pub->radio_disabled) {
5607 int status = brcms_b_up_prep(wlc->hw);
5608 if (status == -ENOMEDIUM) {
5610 (wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE)) {
5611 struct brcms_bss_cfg *bsscfg = wlc->bsscfg;
5612 mboolset(wlc->pub->radio_disabled,
5613 WL_RADIO_HW_DISABLE);
5615 if (bsscfg->enable && bsscfg->BSS)
5616 wiphy_err(wlc->wiphy, "wl%d: up"
5618 "bsscfg_disable()\n",
5624 if (wlc->pub->radio_disabled) {
5625 brcms_c_radio_monitor_start(wlc);
5629 /* brcms_b_up_prep has done brcms_c_corereset(). so clk is on, set it */
5632 brcms_c_radio_monitor_stop(wlc);
5634 /* Set EDCF hostflags */
5635 brcms_b_mhf(wlc->hw, MHF1, MHF1_EDCF, MHF1_EDCF, BRCM_BAND_ALL);
5637 brcms_init(wlc->wl);
5638 wlc->pub->up = true;
5640 if (wlc->bandinit_pending) {
5641 brcms_c_suspend_mac_and_wait(wlc);
5642 brcms_c_set_chanspec(wlc, wlc->default_bss->chanspec);
5643 wlc->bandinit_pending = false;
5644 brcms_c_enable_mac(wlc);
5647 brcms_b_up_finish(wlc->hw);
5649 /* Program the TX wme params with the current settings */
5650 brcms_c_wme_retries_write(wlc);
5652 /* start one second watchdog timer */
5653 brcms_add_timer(wlc->wl, wlc->wdtimer, TIMER_INTERVAL_WATCHDOG, true);
5654 wlc->WDarmed = true;
5656 /* ensure antenna config is up to date */
5657 brcms_c_stf_phy_txant_upd(wlc);
5658 /* ensure LDPC config is in sync */
5659 brcms_c_ht_update_ldpc(wlc, wlc->stf->ldpc);
5664 static uint brcms_c_down_del_timer(struct brcms_c_info *wlc)
5671 static int brcms_b_bmac_down_prep(struct brcms_hardware *wlc_hw)
5676 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
5681 dev_gone = brcms_deviceremoved(wlc_hw->wlc);
5683 /* disable interrupts */
5685 wlc_hw->wlc->macintmask = 0;
5687 /* now disable interrupts */
5688 brcms_intrsoff(wlc_hw->wlc->wl);
5690 /* ensure we're running on the pll clock again */
5691 brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
5693 /* down phy at the last of this stage */
5694 callbacks += wlc_phy_down(wlc_hw->band->pi);
5699 static int brcms_b_down_finish(struct brcms_hardware *wlc_hw)
5704 BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
5710 wlc_phy_hw_state_upd(wlc_hw->band->pi, false);
5712 dev_gone = brcms_deviceremoved(wlc_hw->wlc);
5715 wlc_hw->sbclk = false;
5716 wlc_hw->clk = false;
5717 wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
5719 /* reclaim any posted packets */
5720 brcms_c_flushqueues(wlc_hw->wlc);
5723 /* Reset and disable the core */
5724 if (ai_iscoreup(wlc_hw->sih)) {
5725 if (R_REG(&wlc_hw->regs->maccontrol) &
5727 brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
5728 callbacks += brcms_reset(wlc_hw->wlc->wl);
5729 brcms_c_coredisable(wlc_hw);
5732 /* turn off primary xtal and pll */
5733 if (!wlc_hw->noreset) {
5734 ai_pci_down(wlc_hw->sih);
5735 brcms_b_xtal(wlc_hw, OFF);
5743 * Mark the interface nonoperational, stop the software mechanisms,
5744 * disable the hardware, free any transient buffer state.
5745 * Return a count of the number of driver callbacks still pending.
5747 uint brcms_c_down(struct brcms_c_info *wlc)
5752 bool dev_gone = false;
5753 struct brcms_txq_info *qi;
5755 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
5757 /* check if we are already in the going down path */
5758 if (wlc->going_down) {
5759 wiphy_err(wlc->wiphy, "wl%d: %s: Driver going down so return"
5760 "\n", wlc->pub->unit, __func__);
5766 /* in between, mpc could try to bring down again.. */
5767 wlc->going_down = true;
5769 callbacks += brcms_b_bmac_down_prep(wlc->hw);
5771 dev_gone = brcms_deviceremoved(wlc);
5773 /* Call any registered down handlers */
5774 for (i = 0; i < BRCMS_MAXMODULES; i++) {
5775 if (wlc->modulecb[i].down_fn)
5777 wlc->modulecb[i].down_fn(wlc->modulecb[i].hdl);
5780 /* cancel the watchdog timer */
5782 if (!brcms_del_timer(wlc->wl, wlc->wdtimer))
5784 wlc->WDarmed = false;
5786 /* cancel all other timers */
5787 callbacks += brcms_c_down_del_timer(wlc);
5789 wlc->pub->up = false;
5791 wlc_phy_mute_upd(wlc->band->pi, false, PHY_MUTE_ALL);
5793 /* clear txq flow control */
5794 brcms_c_txflowcontrol_reset(wlc);
5796 /* flush tx queues */
5797 for (qi = wlc->tx_queues; qi != NULL; qi = qi->next)
5798 brcmu_pktq_flush(&qi->q, true, NULL, NULL);
5800 callbacks += brcms_b_down_finish(wlc->hw);
5802 /* brcms_b_down_finish has done brcms_c_coredisable(). so clk is off */
5805 wlc->going_down = false;
5809 /* Set the current gmode configuration */
5810 int brcms_c_set_gmode(struct brcms_c_info *wlc, u8 gmode, bool config)
5814 struct brcms_c_rateset rs;
5815 /* Default to 54g Auto */
5816 /* Advertise and use shortslot (-1/0/1 Auto/Off/On) */
5817 s8 shortslot = BRCMS_SHORTSLOT_AUTO;
5818 bool shortslot_restrict = false; /* Restrict association to stations
5819 * that support shortslot
5821 bool ofdm_basic = false; /* Make 6, 12, and 24 basic rates */
5822 /* Advertise and use short preambles (-1/0/1 Auto/Off/On) */
5823 int preamble = BRCMS_PLCP_LONG;
5824 bool preamble_restrict = false; /* Restrict association to stations
5825 * that support short preambles
5827 struct brcms_band *band;
5829 /* if N-support is enabled, allow Gmode set as long as requested
5830 * Gmode is not GMODE_LEGACY_B
5832 if ((wlc->pub->_n_enab & SUPPORT_11N) && gmode == GMODE_LEGACY_B)
5835 /* verify that we are dealing with 2G band and grab the band pointer */
5836 if (wlc->band->bandtype == BRCM_BAND_2G)
5838 else if ((wlc->pub->_nbands > 1) &&
5839 (wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype == BRCM_BAND_2G))
5840 band = wlc->bandstate[OTHERBANDUNIT(wlc)];
5844 /* Legacy or bust when no OFDM is supported by regulatory */
5845 if ((brcms_c_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
5846 BRCMS_NO_OFDM) && (gmode != GMODE_LEGACY_B))
5849 /* update configuration value */
5851 brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER, gmode);
5853 /* Clear rateset override */
5854 memset(&rs, 0, sizeof(struct brcms_c_rateset));
5857 case GMODE_LEGACY_B:
5858 shortslot = BRCMS_SHORTSLOT_OFF;
5859 brcms_c_rateset_copy(&gphy_legacy_rates, &rs);
5867 /* Accept defaults */
5872 preamble = BRCMS_PLCP_SHORT;
5873 preamble_restrict = true;
5876 case GMODE_PERFORMANCE:
5877 shortslot = BRCMS_SHORTSLOT_ON;
5878 shortslot_restrict = true;
5880 preamble = BRCMS_PLCP_SHORT;
5881 preamble_restrict = true;
5886 wiphy_err(wlc->wiphy, "wl%d: %s: invalid gmode %d\n",
5887 wlc->pub->unit, __func__, gmode);
5891 band->gmode = gmode;
5893 wlc->shortslot_override = shortslot;
5895 /* Use the default 11g rateset */
5897 brcms_c_rateset_copy(&cck_ofdm_rates, &rs);
5900 for (i = 0; i < rs.count; i++) {
5901 if (rs.rates[i] == BRCM_RATE_6M
5902 || rs.rates[i] == BRCM_RATE_12M
5903 || rs.rates[i] == BRCM_RATE_24M)
5904 rs.rates[i] |= BRCMS_RATE_FLAG;
5908 /* Set default bss rateset */
5909 wlc->default_bss->rateset.count = rs.count;
5910 memcpy(wlc->default_bss->rateset.rates, rs.rates,
5911 sizeof(wlc->default_bss->rateset.rates));
5916 int brcms_c_set_nmode(struct brcms_c_info *wlc)
5921 if (wlc->stf->txstreams == WL_11N_3x3)
5926 /* force GMODE_AUTO if NMODE is ON */
5927 brcms_c_set_gmode(wlc, GMODE_AUTO, true);
5928 if (nmode == WL_11N_3x3)
5929 wlc->pub->_n_enab = SUPPORT_HT;
5931 wlc->pub->_n_enab = SUPPORT_11N;
5932 wlc->default_bss->flags |= BRCMS_BSS_HT;
5933 /* add the mcs rates to the default and hw ratesets */
5934 brcms_c_rateset_mcs_build(&wlc->default_bss->rateset,
5935 wlc->stf->txstreams);
5936 for (i = 0; i < wlc->pub->_nbands; i++)
5937 memcpy(wlc->bandstate[i]->hw_rateset.mcs,
5938 wlc->default_bss->rateset.mcs, MCSSET_LEN);
5944 brcms_c_set_internal_rateset(struct brcms_c_info *wlc,
5945 struct brcms_c_rateset *rs_arg)
5947 struct brcms_c_rateset rs, new;
5950 memcpy(&rs, rs_arg, sizeof(struct brcms_c_rateset));
5952 /* check for bad count value */
5953 if ((rs.count == 0) || (rs.count > BRCMS_NUMRATES))
5956 /* try the current band */
5957 bandunit = wlc->band->bandunit;
5958 memcpy(&new, &rs, sizeof(struct brcms_c_rateset));
5959 if (brcms_c_rate_hwrs_filter_sort_validate
5960 (&new, &wlc->bandstate[bandunit]->hw_rateset, true,
5961 wlc->stf->txstreams))
5964 /* try the other band */
5965 if (brcms_is_mband_unlocked(wlc)) {
5966 bandunit = OTHERBANDUNIT(wlc);
5967 memcpy(&new, &rs, sizeof(struct brcms_c_rateset));
5968 if (brcms_c_rate_hwrs_filter_sort_validate(&new,
5970 bandstate[bandunit]->
5972 wlc->stf->txstreams))
5979 /* apply new rateset */
5980 memcpy(&wlc->default_bss->rateset, &new,
5981 sizeof(struct brcms_c_rateset));
5982 memcpy(&wlc->bandstate[bandunit]->defrateset, &new,
5983 sizeof(struct brcms_c_rateset));
5987 static void brcms_c_ofdm_rateset_war(struct brcms_c_info *wlc)
5992 if (wlc->bsscfg->associated)
5993 r = wlc->bsscfg->current_bss->rateset.rates[0];
5995 r = wlc->default_bss->rateset.rates[0];
5997 wlc_phy_ofdm_rateset_war(wlc->band->pi, war);
6000 int brcms_c_set_channel(struct brcms_c_info *wlc, u16 channel)
6002 u16 chspec = ch20mhz_chspec(channel);
6004 if (channel < 0 || channel > MAXCHANNEL)
6007 if (!brcms_c_valid_chanspec_db(wlc->cmi, chspec))
6011 if (!wlc->pub->up && brcms_is_mband_unlocked(wlc)) {
6012 if (wlc->band->bandunit != chspec_bandunit(chspec))
6013 wlc->bandinit_pending = true;
6015 wlc->bandinit_pending = false;
6018 wlc->default_bss->chanspec = chspec;
6019 /* brcms_c_BSSinit() will sanitize the rateset before
6021 if (wlc->pub->up && (wlc_phy_chanspec_get(wlc->band->pi) != chspec)) {
6022 brcms_c_set_home_chanspec(wlc, chspec);
6023 brcms_c_suspend_mac_and_wait(wlc);
6024 brcms_c_set_chanspec(wlc, chspec);
6025 brcms_c_enable_mac(wlc);
6030 int brcms_c_set_rate_limit(struct brcms_c_info *wlc, u16 srl, u16 lrl)
6034 if (srl < 1 || srl > RETRY_SHORT_MAX ||
6035 lrl < 1 || lrl > RETRY_SHORT_MAX)
6041 brcms_b_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL);
6043 for (ac = 0; ac < AC_COUNT; ac++) {
6044 wlc->wme_retries[ac] = SFIELD(wlc->wme_retries[ac],
6045 EDCF_SHORT, wlc->SRL);
6046 wlc->wme_retries[ac] = SFIELD(wlc->wme_retries[ac],
6047 EDCF_LONG, wlc->LRL);
6049 brcms_c_wme_retries_write(wlc);
6054 void brcms_c_get_current_rateset(struct brcms_c_info *wlc,
6055 struct brcm_rateset *currs)
6057 struct brcms_c_rateset *rs;
6059 if (wlc->pub->associated)
6060 rs = &wlc->bsscfg->current_bss->rateset;
6062 rs = &wlc->default_bss->rateset;
6064 /* Copy only legacy rateset section */
6065 currs->count = rs->count;
6066 memcpy(&currs->rates, &rs->rates, rs->count);
6069 int brcms_c_set_rateset(struct brcms_c_info *wlc, struct brcm_rateset *rs)
6071 struct brcms_c_rateset internal_rs;
6074 if (rs->count > BRCMS_NUMRATES)
6077 memset(&internal_rs, 0, sizeof(struct brcms_c_rateset));
6079 /* Copy only legacy rateset section */
6080 internal_rs.count = rs->count;
6081 memcpy(&internal_rs.rates, &rs->rates, internal_rs.count);
6083 /* merge rateset coming in with the current mcsset */
6084 if (wlc->pub->_n_enab & SUPPORT_11N) {
6085 struct brcms_bss_info *mcsset_bss;
6086 if (wlc->bsscfg->associated)
6087 mcsset_bss = wlc->bsscfg->current_bss;
6089 mcsset_bss = wlc->default_bss;
6090 memcpy(internal_rs.mcs, &mcsset_bss->rateset.mcs[0],
6094 bcmerror = brcms_c_set_internal_rateset(wlc, &internal_rs);
6096 brcms_c_ofdm_rateset_war(wlc);
6101 int brcms_c_set_beacon_period(struct brcms_c_info *wlc, u16 period)
6103 if (period < DOT11_MIN_BEACON_PERIOD ||
6104 period > DOT11_MAX_BEACON_PERIOD)
6107 wlc->default_bss->beacon_period = period;
6111 u16 brcms_c_get_phy_type(struct brcms_c_info *wlc, int phyidx)
6113 return wlc->band->phytype;
6116 void brcms_c_set_shortslot_override(struct brcms_c_info *wlc, s8 sslot_override)
6118 wlc->shortslot_override = sslot_override;
6121 * shortslot is an 11g feature, so no more work if we are
6122 * currently on the 5G band
6124 if (wlc->band->bandtype == BRCM_BAND_5G)
6127 if (wlc->pub->up && wlc->pub->associated) {
6128 /* let watchdog or beacon processing update shortslot */
6129 } else if (wlc->pub->up) {
6130 /* unassociated shortslot is off */
6131 brcms_c_switch_shortslot(wlc, false);
6133 /* driver is down, so just update the brcms_c_info
6135 if (wlc->shortslot_override == BRCMS_SHORTSLOT_AUTO)
6136 wlc->shortslot = false;
6139 (wlc->shortslot_override ==
6140 BRCMS_SHORTSLOT_ON);
6145 * register watchdog and down handlers.
6147 int brcms_c_module_register(struct brcms_pub *pub,
6148 const char *name, struct brcms_info *hdl,
6149 int (*d_fn)(void *handle))
6151 struct brcms_c_info *wlc = (struct brcms_c_info *) pub->wlc;
6154 /* find an empty entry and just add, no duplication check! */
6155 for (i = 0; i < BRCMS_MAXMODULES; i++) {
6156 if (wlc->modulecb[i].name[0] == '\0') {
6157 strncpy(wlc->modulecb[i].name, name,
6158 sizeof(wlc->modulecb[i].name) - 1);
6159 wlc->modulecb[i].hdl = hdl;
6160 wlc->modulecb[i].down_fn = d_fn;
6168 /* unregister module callbacks */
6169 int brcms_c_module_unregister(struct brcms_pub *pub, const char *name,
6170 struct brcms_info *hdl)
6172 struct brcms_c_info *wlc = (struct brcms_c_info *) pub->wlc;
6178 for (i = 0; i < BRCMS_MAXMODULES; i++) {
6179 if (!strcmp(wlc->modulecb[i].name, name) &&
6180 (wlc->modulecb[i].hdl == hdl)) {
6181 memset(&wlc->modulecb[i], 0, sizeof(struct modulecb));
6186 /* table not found! */
6191 static const char * const supr_reason[] = {
6192 "None", "PMQ Entry", "Flush request",
6193 "Previous frag failure", "Channel mismatch",
6194 "Lifetime Expiry", "Underflow"
6197 static void brcms_c_print_txs_status(u16 s)
6199 printk(KERN_DEBUG "[15:12] %d frame attempts\n",
6200 (s & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT);
6201 printk(KERN_DEBUG " [11:8] %d rts attempts\n",
6202 (s & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT);
6203 printk(KERN_DEBUG " [7] %d PM mode indicated\n",
6204 ((s & TX_STATUS_PMINDCTD) ? 1 : 0));
6205 printk(KERN_DEBUG " [6] %d intermediate status\n",
6206 ((s & TX_STATUS_INTERMEDIATE) ? 1 : 0));
6207 printk(KERN_DEBUG " [5] %d AMPDU\n",
6208 (s & TX_STATUS_AMPDU) ? 1 : 0);
6209 printk(KERN_DEBUG " [4:2] %d Frame Suppressed Reason (%s)\n",
6210 ((s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT),
6211 supr_reason[(s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT]);
6212 printk(KERN_DEBUG " [1] %d acked\n",
6213 ((s & TX_STATUS_ACK_RCV) ? 1 : 0));
6217 void brcms_c_print_txstatus(struct tx_status *txs)
6220 u16 s = txs->status;
6221 u16 ackphyrxsh = txs->ackphyrxsh;
6223 printk(KERN_DEBUG "\ntxpkt (MPDU) Complete\n");
6225 printk(KERN_DEBUG "FrameID: %04x ", txs->frameid);
6226 printk(KERN_DEBUG "TxStatus: %04x", s);
6227 printk(KERN_DEBUG "\n");
6229 brcms_c_print_txs_status(s);
6231 printk(KERN_DEBUG "LastTxTime: %04x ", txs->lasttxtime);
6232 printk(KERN_DEBUG "Seq: %04x ", txs->sequence);
6233 printk(KERN_DEBUG "PHYTxStatus: %04x ", txs->phyerr);
6234 printk(KERN_DEBUG "RxAckRSSI: %04x ",
6235 (ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT);
6236 printk(KERN_DEBUG "RxAckSQ: %04x",
6237 (ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
6238 printk(KERN_DEBUG "\n");
6239 #endif /* defined(BCMDBG) */
6242 void brcms_c_statsupd(struct brcms_c_info *wlc)
6245 struct macstat macstats;
6252 /* if driver down, make no sense to update stats */
6257 /* save last rx fifo 0 overflow count */
6258 rxf0ovfl = wlc->core->macstat_snapshot->rxf0ovfl;
6260 /* save last tx fifo underflow count */
6261 for (i = 0; i < NFIFO; i++)
6262 txfunfl[i] = wlc->core->macstat_snapshot->txfunfl[i];
6265 /* Read mac stats from contiguous shared memory */
6266 brcms_b_copyfrom_objmem(wlc->hw, M_UCODE_MACSTAT, &macstats,
6267 sizeof(struct macstat), OBJADDR_SHM_SEL);
6270 /* check for rx fifo 0 overflow */
6271 delta = (u16) (wlc->core->macstat_snapshot->rxf0ovfl - rxf0ovfl);
6273 wiphy_err(wlc->wiphy, "wl%d: %u rx fifo 0 overflows!\n",
6274 wlc->pub->unit, delta);
6276 /* check for tx fifo underflows */
6277 for (i = 0; i < NFIFO; i++) {
6279 (u16) (wlc->core->macstat_snapshot->txfunfl[i] -
6282 wiphy_err(wlc->wiphy, "wl%d: %u tx fifo %d underflows!"
6283 "\n", wlc->pub->unit, delta, i);
6287 /* merge counters from dma module */
6288 for (i = 0; i < NFIFO; i++) {
6290 dma_counterreset(wlc->hw->di[i]);
6294 bool brcms_c_chipmatch(u16 vendor, u16 device)
6296 if (vendor != PCI_VENDOR_ID_BROADCOM) {
6297 pr_err("chipmatch: unknown vendor id %04x\n", vendor);
6301 if (device == BCM43224_D11N_ID_VEN1)
6303 if ((device == BCM43224_D11N_ID) || (device == BCM43225_D11N2G_ID))
6305 if (device == BCM4313_D11N2G_ID)
6307 if ((device == BCM43236_D11N_ID) || (device == BCM43236_D11N2G_ID))
6310 pr_err("chipmatch: unknown device id %04x\n", device);
6315 void brcms_c_print_txdesc(struct d11txh *txh)
6317 u16 mtcl = le16_to_cpu(txh->MacTxControlLow);
6318 u16 mtch = le16_to_cpu(txh->MacTxControlHigh);
6319 u16 mfc = le16_to_cpu(txh->MacFrameControl);
6320 u16 tfest = le16_to_cpu(txh->TxFesTimeNormal);
6321 u16 ptcw = le16_to_cpu(txh->PhyTxControlWord);
6322 u16 ptcw_1 = le16_to_cpu(txh->PhyTxControlWord_1);
6323 u16 ptcw_1_Fbr = le16_to_cpu(txh->PhyTxControlWord_1_Fbr);
6324 u16 ptcw_1_Rts = le16_to_cpu(txh->PhyTxControlWord_1_Rts);
6325 u16 ptcw_1_FbrRts = le16_to_cpu(txh->PhyTxControlWord_1_FbrRts);
6326 u16 mainrates = le16_to_cpu(txh->MainRates);
6327 u16 xtraft = le16_to_cpu(txh->XtraFrameTypes);
6329 u8 *ra = txh->TxFrameRA;
6330 u16 tfestfb = le16_to_cpu(txh->TxFesTimeFallback);
6331 u8 *rtspfb = txh->RTSPLCPFallback;
6332 u16 rtsdfb = le16_to_cpu(txh->RTSDurFallback);
6333 u8 *fragpfb = txh->FragPLCPFallback;
6334 u16 fragdfb = le16_to_cpu(txh->FragDurFallback);
6335 u16 mmodelen = le16_to_cpu(txh->MModeLen);
6336 u16 mmodefbrlen = le16_to_cpu(txh->MModeFbrLen);
6337 u16 tfid = le16_to_cpu(txh->TxFrameID);
6338 u16 txs = le16_to_cpu(txh->TxStatus);
6339 u16 mnmpdu = le16_to_cpu(txh->MaxNMpdus);
6340 u16 mabyte = le16_to_cpu(txh->MaxABytes_MRT);
6341 u16 mabyte_f = le16_to_cpu(txh->MaxABytes_FBR);
6342 u16 mmbyte = le16_to_cpu(txh->MinMBytes);
6344 u8 *rtsph = txh->RTSPhyHeader;
6345 struct ieee80211_rts rts = txh->rts_frame;
6348 /* add plcp header along with txh descriptor */
6349 printk(KERN_DEBUG "Raw TxDesc + plcp header:\n");
6350 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
6351 txh, sizeof(struct d11txh) + 48);
6353 printk(KERN_DEBUG "TxCtlLow: %04x ", mtcl);
6354 printk(KERN_DEBUG "TxCtlHigh: %04x ", mtch);
6355 printk(KERN_DEBUG "FC: %04x ", mfc);
6356 printk(KERN_DEBUG "FES Time: %04x\n", tfest);
6357 printk(KERN_DEBUG "PhyCtl: %04x%s ", ptcw,
6358 (ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
6359 printk(KERN_DEBUG "PhyCtl_1: %04x ", ptcw_1);
6360 printk(KERN_DEBUG "PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
6361 printk(KERN_DEBUG "PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
6362 printk(KERN_DEBUG "PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
6363 printk(KERN_DEBUG "MainRates: %04x ", mainrates);
6364 printk(KERN_DEBUG "XtraFrameTypes: %04x ", xtraft);
6365 printk(KERN_DEBUG "\n");
6367 brcmu_format_hex(hexbuf, iv, sizeof(txh->IV));
6368 printk(KERN_DEBUG "SecIV: %s\n", hexbuf);
6369 brcmu_format_hex(hexbuf, ra, sizeof(txh->TxFrameRA));
6370 printk(KERN_DEBUG "RA: %s\n", hexbuf);
6372 printk(KERN_DEBUG "Fb FES Time: %04x ", tfestfb);
6373 brcmu_format_hex(hexbuf, rtspfb, sizeof(txh->RTSPLCPFallback));
6374 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
6375 printk(KERN_DEBUG "RTS DUR: %04x ", rtsdfb);
6376 brcmu_format_hex(hexbuf, fragpfb, sizeof(txh->FragPLCPFallback));
6377 printk(KERN_DEBUG "PLCP: %s ", hexbuf);
6378 printk(KERN_DEBUG "DUR: %04x", fragdfb);
6379 printk(KERN_DEBUG "\n");
6381 printk(KERN_DEBUG "MModeLen: %04x ", mmodelen);
6382 printk(KERN_DEBUG "MModeFbrLen: %04x\n", mmodefbrlen);
6384 printk(KERN_DEBUG "FrameID: %04x\n", tfid);
6385 printk(KERN_DEBUG "TxStatus: %04x\n", txs);
6387 printk(KERN_DEBUG "MaxNumMpdu: %04x\n", mnmpdu);
6388 printk(KERN_DEBUG "MaxAggbyte: %04x\n", mabyte);
6389 printk(KERN_DEBUG "MaxAggbyte_fb: %04x\n", mabyte_f);
6390 printk(KERN_DEBUG "MinByte: %04x\n", mmbyte);
6392 brcmu_format_hex(hexbuf, rtsph, sizeof(txh->RTSPhyHeader));
6393 printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
6394 brcmu_format_hex(hexbuf, (u8 *) &rts, sizeof(txh->rts_frame));
6395 printk(KERN_DEBUG "RTS Frame: %s", hexbuf);
6396 printk(KERN_DEBUG "\n");
6398 #endif /* defined(BCMDBG) */
6401 void brcms_c_print_rxh(struct d11rxhdr *rxh)
6403 u16 len = rxh->RxFrameSize;
6404 u16 phystatus_0 = rxh->PhyRxStatus_0;
6405 u16 phystatus_1 = rxh->PhyRxStatus_1;
6406 u16 phystatus_2 = rxh->PhyRxStatus_2;
6407 u16 phystatus_3 = rxh->PhyRxStatus_3;
6408 u16 macstatus1 = rxh->RxStatus1;
6409 u16 macstatus2 = rxh->RxStatus2;
6412 static const struct brcmu_bit_desc macstat_flags[] = {
6413 {RXS_FCSERR, "FCSErr"},
6414 {RXS_RESPFRAMETX, "Reply"},
6415 {RXS_PBPRES, "PADDING"},
6416 {RXS_DECATMPT, "DeCr"},
6417 {RXS_DECERR, "DeCrErr"},
6418 {RXS_BCNSENT, "Bcn"},
6422 printk(KERN_DEBUG "Raw RxDesc:\n");
6423 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, rxh,
6424 sizeof(struct d11rxhdr));
6426 brcmu_format_flags(macstat_flags, macstatus1, flagstr, 64);
6428 snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
6430 printk(KERN_DEBUG "RxFrameSize: %6s (%d)%s\n", lenbuf, len,
6431 (rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
6432 printk(KERN_DEBUG "RxPHYStatus: %04x %04x %04x %04x\n",
6433 phystatus_0, phystatus_1, phystatus_2, phystatus_3);
6434 printk(KERN_DEBUG "RxMACStatus: %x %s\n", macstatus1, flagstr);
6435 printk(KERN_DEBUG "RXMACaggtype: %x\n",
6436 (macstatus2 & RXS_AGGTYPE_MASK));
6437 printk(KERN_DEBUG "RxTSFTime: %04x\n", rxh->RxTSFTime);
6439 #endif /* defined(BCMDBG) */
6441 u16 brcms_b_rate_shm_offset(struct brcms_hardware *wlc_hw, u8 rate)
6446 /* get the phy specific rate encoding for the PLCP SIGNAL field */
6447 if (is_ofdm_rate(rate))
6448 table_ptr = M_RT_DIRMAP_A;
6450 table_ptr = M_RT_DIRMAP_B;
6452 /* for a given rate, the LS-nibble of the PLCP SIGNAL field is
6453 * the index into the rate table.
6455 phy_rate = rate_info[rate] & BRCMS_RATE_MASK;
6456 index = phy_rate & 0xf;
6458 /* Find the SHM pointer to the rate table entry by looking in the
6461 return 2 * brcms_b_read_shm(wlc_hw, table_ptr + (index * 2));
6464 /* Callback for device removed */
6467 * Attempts to queue a packet onto a multiple-precedence queue,
6468 * if necessary evicting a lower precedence packet from the queue.
6470 * 'prec' is the precedence number that has already been mapped
6471 * from the packet priority.
6473 * Returns true if packet consumed (queued), false if not.
6475 static bool brcms_c_prec_enq(struct brcms_c_info *wlc, struct pktq *q,
6476 struct sk_buff *pkt, int prec)
6478 return brcms_c_prec_enq_head(wlc, q, pkt, prec, false);
6482 brcms_c_prec_enq_head(struct brcms_c_info *wlc, struct pktq *q,
6483 struct sk_buff *pkt, int prec, bool head)
6486 int eprec = -1; /* precedence to evict from */
6488 /* Determine precedence from which to evict packet, if any */
6489 if (pktq_pfull(q, prec))
6491 else if (pktq_full(q)) {
6492 p = brcmu_pktq_peek_tail(q, &eprec);
6494 wiphy_err(wlc->wiphy, "%s: Failing: eprec %d > prec %d"
6495 "\n", __func__, eprec, prec);
6500 /* Evict if needed */
6502 bool discard_oldest;
6504 discard_oldest = ac_bitmap_tst(0, eprec);
6506 /* Refuse newer packet unless configured to discard oldest */
6507 if (eprec == prec && !discard_oldest) {
6508 wiphy_err(wlc->wiphy, "%s: No where to go, prec == %d"
6509 "\n", __func__, prec);
6513 /* Evict packet according to discard policy */
6514 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
6515 brcmu_pktq_pdeq_tail(q, eprec);
6516 brcmu_pkt_buf_free_skb(p);
6521 p = brcmu_pktq_penq_head(q, prec, pkt);
6523 p = brcmu_pktq_penq(q, prec, pkt);
6528 void brcms_c_txq_enq(struct brcms_c_info *wlc, struct scb *scb,
6529 struct sk_buff *sdu, uint prec)
6531 struct brcms_txq_info *qi = wlc->pkt_queue; /* Check me */
6532 struct pktq *q = &qi->q;
6535 prio = sdu->priority;
6537 if (!brcms_c_prec_enq(wlc, q, sdu, prec)) {
6539 * we might hit this condtion in case
6540 * packet flooding from mac80211 stack
6542 brcmu_pkt_buf_free_skb(sdu);
6547 * bcmc_fid_generate:
6548 * Generate frame ID for a BCMC packet. The frag field is not used
6549 * for MC frames so is used as part of the sequence number.
6552 bcmc_fid_generate(struct brcms_c_info *wlc, struct brcms_bss_cfg *bsscfg,
6557 frameid = le16_to_cpu(txh->TxFrameID) & ~(TXFID_SEQ_MASK |
6561 mc_fid_counter++) << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
6568 brcms_c_calc_ack_time(struct brcms_c_info *wlc, u32 rspec,
6573 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d\n",
6574 wlc->pub->unit, rspec, preamble_type);
6576 * Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that
6577 * is less than or equal to the rate of the immediately previous
6580 rspec = brcms_basic_rate(wlc, rspec);
6581 /* ACK frame len == 14 == 2(fc) + 2(dur) + 6(ra) + 4(fcs) */
6583 brcms_c_calc_frame_time(wlc, rspec, preamble_type,
6584 (DOT11_ACK_LEN + FCS_LEN));
6589 brcms_c_calc_cts_time(struct brcms_c_info *wlc, u32 rspec,
6592 BCMMSG(wlc->wiphy, "wl%d: ratespec 0x%x, preamble_type %d\n",
6593 wlc->pub->unit, rspec, preamble_type);
6594 return brcms_c_calc_ack_time(wlc, rspec, preamble_type);
6598 brcms_c_calc_ba_time(struct brcms_c_info *wlc, u32 rspec,
6601 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, "
6602 "preamble_type %d\n", wlc->pub->unit, rspec, preamble_type);
6604 * Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that
6605 * is less than or equal to the rate of the immediately previous
6608 rspec = brcms_basic_rate(wlc, rspec);
6609 /* BA len == 32 == 16(ctl hdr) + 4(ba len) + 8(bitmap) + 4(fcs) */
6610 return brcms_c_calc_frame_time(wlc, rspec, preamble_type,
6611 (DOT11_BA_LEN + DOT11_BA_BITMAP_LEN +
6615 /* brcms_c_compute_frame_dur()
6617 * Calculate the 802.11 MAC header DUR field for MPDU
6618 * DUR for a single frame = 1 SIFS + 1 ACK
6619 * DUR for a frame with following frags = 3 SIFS + 2 ACK + next frag time
6621 * rate MPDU rate in unit of 500kbps
6622 * next_frag_len next MPDU length in bytes
6623 * preamble_type use short/GF or long/MM PLCP header
6626 brcms_c_compute_frame_dur(struct brcms_c_info *wlc, u32 rate,
6627 u8 preamble_type, uint next_frag_len)
6631 sifs = get_sifs(wlc->band);
6634 dur += (u16) brcms_c_calc_ack_time(wlc, rate, preamble_type);
6636 if (next_frag_len) {
6637 /* Double the current DUR to get 2 SIFS + 2 ACKs */
6639 /* add another SIFS and the frag time */
6642 (u16) brcms_c_calc_frame_time(wlc, rate, preamble_type,
6648 /* The opposite of brcms_c_calc_frame_time */
6650 brcms_c_calc_frame_len(struct brcms_c_info *wlc, u32 ratespec,
6651 u8 preamble_type, uint dur)
6653 uint nsyms, mac_len, Ndps, kNdps;
6654 uint rate = rspec2rate(ratespec);
6656 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, dur %d\n",
6657 wlc->pub->unit, ratespec, preamble_type, dur);
6659 if (is_mcs_rate(ratespec)) {
6660 uint mcs = ratespec & RSPEC_RATE_MASK;
6661 int tot_streams = mcs_2_txstreams(mcs) + rspec_stc(ratespec);
6662 dur -= PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
6663 /* payload calculation matches that of regular ofdm */
6664 if (wlc->band->bandtype == BRCM_BAND_2G)
6665 dur -= DOT11_OFDM_SIGNAL_EXTENSION;
6666 /* kNdbps = kbps * 4 */
6667 kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec),
6668 rspec_issgi(ratespec)) * 4;
6669 nsyms = dur / APHY_SYMBOL_TIME;
6672 ((APHY_SERVICE_NBITS + APHY_TAIL_NBITS) * 1000)) / 8000;
6673 } else if (is_ofdm_rate(ratespec)) {
6674 dur -= APHY_PREAMBLE_TIME;
6675 dur -= APHY_SIGNAL_TIME;
6676 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
6678 nsyms = dur / APHY_SYMBOL_TIME;
6681 (APHY_SERVICE_NBITS + APHY_TAIL_NBITS)) / 8;
6683 if (preamble_type & BRCMS_SHORT_PREAMBLE)
6684 dur -= BPHY_PLCP_SHORT_TIME;
6686 dur -= BPHY_PLCP_TIME;
6687 mac_len = dur * rate;
6688 /* divide out factor of 2 in rate (1/2 mbps) */
6689 mac_len = mac_len / 8 / 2;
6695 mac80211_wlc_set_nrate(struct brcms_c_info *wlc, struct brcms_band *cur_band,
6698 u8 stf = (int_val & NRATE_STF_MASK) >> NRATE_STF_SHIFT;
6699 u8 rate = int_val & NRATE_RATE_MASK;
6701 bool ismcs = ((int_val & NRATE_MCS_INUSE) == NRATE_MCS_INUSE);
6702 bool issgi = ((int_val & NRATE_SGI_MASK) >> NRATE_SGI_SHIFT);
6703 bool override_mcs_only = ((int_val & NRATE_OVERRIDE_MCS_ONLY)
6704 == NRATE_OVERRIDE_MCS_ONLY);
6710 /* validate the combination of rate/mcs/stf is allowed */
6711 if ((wlc->pub->_n_enab & SUPPORT_11N) && ismcs) {
6712 /* mcs only allowed when nmode */
6713 if (stf > PHY_TXC1_MODE_SDM) {
6714 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid stf\n",
6715 wlc->pub->unit, __func__);
6720 /* mcs 32 is a special case, DUP mode 40 only */
6722 if (!CHSPEC_IS40(wlc->home_chanspec) ||
6723 ((stf != PHY_TXC1_MODE_SISO)
6724 && (stf != PHY_TXC1_MODE_CDD))) {
6725 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid mcs "
6726 "32\n", wlc->pub->unit, __func__);
6730 /* mcs > 7 must use stf SDM */
6731 } else if (rate > HIGHEST_SINGLE_STREAM_MCS) {
6732 /* mcs > 7 must use stf SDM */
6733 if (stf != PHY_TXC1_MODE_SDM) {
6734 BCMMSG(wlc->wiphy, "wl%d: enabling "
6735 "SDM mode for mcs %d\n",
6736 wlc->pub->unit, rate);
6737 stf = PHY_TXC1_MODE_SDM;
6741 * MCS 0-7 may use SISO, CDD, and for
6744 if ((stf > PHY_TXC1_MODE_STBC) ||
6745 (!BRCMS_STBC_CAP_PHY(wlc)
6746 && (stf == PHY_TXC1_MODE_STBC))) {
6747 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid STBC"
6748 "\n", wlc->pub->unit, __func__);
6753 } else if (is_ofdm_rate(rate)) {
6754 if ((stf != PHY_TXC1_MODE_CDD) && (stf != PHY_TXC1_MODE_SISO)) {
6755 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid OFDM\n",
6756 wlc->pub->unit, __func__);
6760 } else if (is_cck_rate(rate)) {
6761 if ((cur_band->bandtype != BRCM_BAND_2G)
6762 || (stf != PHY_TXC1_MODE_SISO)) {
6763 wiphy_err(wlc->wiphy, "wl%d: %s: Invalid CCK\n",
6764 wlc->pub->unit, __func__);
6769 wiphy_err(wlc->wiphy, "wl%d: %s: Unknown rate type\n",
6770 wlc->pub->unit, __func__);
6774 /* make sure multiple antennae are available for non-siso rates */
6775 if ((stf != PHY_TXC1_MODE_SISO) && (wlc->stf->txstreams == 1)) {
6776 wiphy_err(wlc->wiphy, "wl%d: %s: SISO antenna but !SISO "
6777 "request\n", wlc->pub->unit, __func__);
6784 rspec |= RSPEC_MIMORATE;
6785 /* For STBC populate the STC field of the ratespec */
6786 if (stf == PHY_TXC1_MODE_STBC) {
6788 stc = 1; /* Nss for single stream is always 1 */
6789 rspec |= (stc << RSPEC_STC_SHIFT);
6793 rspec |= (stf << RSPEC_STF_SHIFT);
6795 if (override_mcs_only)
6796 rspec |= RSPEC_OVERRIDE_MCS_ONLY;
6799 rspec |= RSPEC_SHORT_GI;
6802 && !brcms_c_valid_rate(wlc, rspec, cur_band->bandtype, true))
6811 * Add struct d11txh, struct cck_phy_hdr.
6813 * 'p' data must start with 802.11 MAC header
6814 * 'p' must allow enough bytes of local headers to be "pushed" onto the packet
6816 * headroom == D11_PHY_HDR_LEN + D11_TXH_LEN (D11_TXH_LEN is now 104 bytes)
6820 brcms_c_d11hdrs_mac80211(struct brcms_c_info *wlc, struct ieee80211_hw *hw,
6821 struct sk_buff *p, struct scb *scb, uint frag,
6822 uint nfrags, uint queue, uint next_frag_len)
6824 struct ieee80211_hdr *h;
6826 u8 *plcp, plcp_fallback[D11_PHY_HDR_LEN];
6827 int len, phylen, rts_phylen;
6828 u16 mch, phyctl, xfts, mainrates;
6829 u16 seq = 0, mcl = 0, status = 0, frameid = 0;
6830 u32 rspec[2] = { BRCM_RATE_1M, BRCM_RATE_1M };
6831 u32 rts_rspec[2] = { BRCM_RATE_1M, BRCM_RATE_1M };
6832 bool use_rts = false;
6833 bool use_cts = false;
6834 bool use_rifs = false;
6835 bool short_preamble[2] = { false, false };
6836 u8 preamble_type[2] = { BRCMS_LONG_PREAMBLE, BRCMS_LONG_PREAMBLE };
6837 u8 rts_preamble_type[2] = { BRCMS_LONG_PREAMBLE, BRCMS_LONG_PREAMBLE };
6838 u8 *rts_plcp, rts_plcp_fallback[D11_PHY_HDR_LEN];
6839 struct ieee80211_rts *rts = NULL;
6842 bool hwtkmic = false;
6843 u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ;
6844 #define ANTCFG_NONE 0xFF
6845 u8 antcfg = ANTCFG_NONE;
6846 u8 fbantcfg = ANTCFG_NONE;
6847 uint phyctl1_stf = 0;
6849 struct ieee80211_tx_rate *txrate[2];
6851 struct ieee80211_tx_info *tx_info;
6854 u8 mimo_preamble_type;
6856 /* locate 802.11 MAC header */
6857 h = (struct ieee80211_hdr *)(p->data);
6858 qos = ieee80211_is_data_qos(h->frame_control);
6860 /* compute length of frame in bytes for use in PLCP computations */
6861 len = brcmu_pkttotlen(p);
6862 phylen = len + FCS_LEN;
6865 tx_info = IEEE80211_SKB_CB(p);
6868 plcp = skb_push(p, D11_PHY_HDR_LEN);
6870 /* add Broadcom tx descriptor header */
6871 txh = (struct d11txh *) skb_push(p, D11_TXH_LEN);
6872 memset(txh, 0, D11_TXH_LEN);
6875 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
6876 /* non-AP STA should never use BCMC queue */
6877 if (queue == TX_BCMC_FIFO) {
6878 wiphy_err(wlc->wiphy, "wl%d: %s: ASSERT queue == "
6879 "TX_BCMC!\n", wlc->pub->unit, __func__);
6880 frameid = bcmc_fid_generate(wlc, NULL, txh);
6882 /* Increment the counter for first fragment */
6883 if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
6884 scb->seqnum[p->priority]++;
6886 /* extract fragment number from frame first */
6887 seq = le16_to_cpu(h->seq_ctrl) & FRAGNUM_MASK;
6888 seq |= (scb->seqnum[p->priority] << SEQNUM_SHIFT);
6889 h->seq_ctrl = cpu_to_le16(seq);
6891 frameid = ((seq << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) |
6892 (queue & TXFID_QUEUE_MASK);
6895 frameid |= queue & TXFID_QUEUE_MASK;
6897 /* set the ignpmq bit for all pkts tx'd in PS mode and for beacons */
6898 if (ieee80211_is_beacon(h->frame_control))
6899 mcl |= TXC_IGNOREPMQ;
6901 txrate[0] = tx_info->control.rates;
6902 txrate[1] = txrate[0] + 1;
6905 * if rate control algorithm didn't give us a fallback
6906 * rate, use the primary rate
6908 if (txrate[1]->idx < 0)
6909 txrate[1] = txrate[0];
6911 for (k = 0; k < hw->max_rates; k++) {
6912 is_mcs = txrate[k]->flags & IEEE80211_TX_RC_MCS ? true : false;
6914 if ((txrate[k]->idx >= 0)
6915 && (txrate[k]->idx <
6916 hw->wiphy->bands[tx_info->band]->n_bitrates)) {
6918 hw->wiphy->bands[tx_info->band]->
6919 bitrates[txrate[k]->idx].hw_value;
6922 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE ?
6925 rspec[k] = BRCM_RATE_1M;
6928 rspec[k] = mac80211_wlc_set_nrate(wlc, wlc->band,
6929 NRATE_MCS_INUSE | txrate[k]->idx);
6933 * Currently only support same setting for primay and
6934 * fallback rates. Unify flags for each rate into a
6935 * single value for the frame
6939 flags & IEEE80211_TX_RC_USE_RTS_CTS ? true : false;
6942 flags & IEEE80211_TX_RC_USE_CTS_PROTECT ? true : false;
6947 * determine and validate primary rate
6948 * and fallback rates
6950 if (!rspec_active(rspec[k])) {
6951 rspec[k] = BRCM_RATE_1M;
6953 if (!is_multicast_ether_addr(h->addr1)) {
6954 /* set tx antenna config */
6955 brcms_c_antsel_antcfg_get(wlc->asi, false,
6956 false, 0, 0, &antcfg, &fbantcfg);
6961 phyctl1_stf = wlc->stf->ss_opmode;
6963 if (wlc->pub->_n_enab & SUPPORT_11N) {
6964 for (k = 0; k < hw->max_rates; k++) {
6966 * apply siso/cdd to single stream mcs's or ofdm
6967 * if rspec is auto selected
6969 if (((is_mcs_rate(rspec[k]) &&
6970 is_single_stream(rspec[k] & RSPEC_RATE_MASK)) ||
6971 is_ofdm_rate(rspec[k]))
6972 && ((rspec[k] & RSPEC_OVERRIDE_MCS_ONLY)
6973 || !(rspec[k] & RSPEC_OVERRIDE))) {
6974 rspec[k] &= ~(RSPEC_STF_MASK | RSPEC_STC_MASK);
6976 /* For SISO MCS use STBC if possible */
6977 if (is_mcs_rate(rspec[k])
6978 && BRCMS_STF_SS_STBC_TX(wlc, scb)) {
6981 /* Nss for single stream is always 1 */
6983 rspec[k] |= (PHY_TXC1_MODE_STBC <<
6985 (stc << RSPEC_STC_SHIFT);
6988 (phyctl1_stf << RSPEC_STF_SHIFT);
6992 * Is the phy configured to use 40MHZ frames? If
6993 * so then pick the desired txbw
6995 if (brcms_chspec_bw(wlc->chanspec) == BRCMS_40_MHZ) {
6996 /* default txbw is 20in40 SB */
6997 mimo_ctlchbw = mimo_txbw =
6998 CHSPEC_SB_UPPER(wlc_phy_chanspec_get(
7000 ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ;
7002 if (is_mcs_rate(rspec[k])) {
7003 /* mcs 32 must be 40b/w DUP */
7004 if ((rspec[k] & RSPEC_RATE_MASK)
7007 PHY_TXC1_BW_40MHZ_DUP;
7009 } else if (wlc->mimo_40txbw != AUTO)
7010 mimo_txbw = wlc->mimo_40txbw;
7011 /* else check if dst is using 40 Mhz */
7012 else if (scb->flags & SCB_IS40)
7013 mimo_txbw = PHY_TXC1_BW_40MHZ;
7014 } else if (is_ofdm_rate(rspec[k])) {
7015 if (wlc->ofdm_40txbw != AUTO)
7016 mimo_txbw = wlc->ofdm_40txbw;
7017 } else if (wlc->cck_40txbw != AUTO) {
7018 mimo_txbw = wlc->cck_40txbw;
7022 * mcs32 is 40 b/w only.
7023 * This is possible for probe packets on
7026 if ((rspec[k] & RSPEC_RATE_MASK) == 32)
7028 rspec[k] = RSPEC_MIMORATE;
7030 mimo_txbw = PHY_TXC1_BW_20MHZ;
7033 /* Set channel width */
7034 rspec[k] &= ~RSPEC_BW_MASK;
7035 if ((k == 0) || ((k > 0) && is_mcs_rate(rspec[k])))
7036 rspec[k] |= (mimo_txbw << RSPEC_BW_SHIFT);
7038 rspec[k] |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
7040 /* Disable short GI, not supported yet */
7041 rspec[k] &= ~RSPEC_SHORT_GI;
7043 mimo_preamble_type = BRCMS_MM_PREAMBLE;
7044 if (txrate[k]->flags & IEEE80211_TX_RC_GREEN_FIELD)
7045 mimo_preamble_type = BRCMS_GF_PREAMBLE;
7047 if ((txrate[k]->flags & IEEE80211_TX_RC_MCS)
7048 && (!is_mcs_rate(rspec[k]))) {
7049 wiphy_err(wlc->wiphy, "wl%d: %s: IEEE80211_TX_"
7050 "RC_MCS != is_mcs_rate(rspec)\n",
7051 wlc->pub->unit, __func__);
7054 if (is_mcs_rate(rspec[k])) {
7055 preamble_type[k] = mimo_preamble_type;
7058 * if SGI is selected, then forced mm
7061 if ((rspec[k] & RSPEC_SHORT_GI)
7062 && is_single_stream(rspec[k] &
7064 preamble_type[k] = BRCMS_MM_PREAMBLE;
7067 /* should be better conditionalized */
7068 if (!is_mcs_rate(rspec[0])
7069 && (tx_info->control.rates[0].
7070 flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
7071 preamble_type[k] = BRCMS_SHORT_PREAMBLE;
7074 for (k = 0; k < hw->max_rates; k++) {
7075 /* Set ctrlchbw as 20Mhz */
7076 rspec[k] &= ~RSPEC_BW_MASK;
7077 rspec[k] |= (PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT);
7079 /* for nphy, stf of ofdm frames must follow policies */
7080 if (BRCMS_ISNPHY(wlc->band) && is_ofdm_rate(rspec[k])) {
7081 rspec[k] &= ~RSPEC_STF_MASK;
7082 rspec[k] |= phyctl1_stf << RSPEC_STF_SHIFT;
7087 /* Reset these for use with AMPDU's */
7088 txrate[0]->count = 0;
7089 txrate[1]->count = 0;
7091 /* (2) PROTECTION, may change rspec */
7092 if ((ieee80211_is_data(h->frame_control) ||
7093 ieee80211_is_mgmt(h->frame_control)) &&
7094 (phylen > wlc->RTSThresh) && !is_multicast_ether_addr(h->addr1))
7097 /* (3) PLCP: determine PLCP header and MAC duration,
7098 * fill struct d11txh */
7099 brcms_c_compute_plcp(wlc, rspec[0], phylen, plcp);
7100 brcms_c_compute_plcp(wlc, rspec[1], phylen, plcp_fallback);
7101 memcpy(&txh->FragPLCPFallback,
7102 plcp_fallback, sizeof(txh->FragPLCPFallback));
7104 /* Length field now put in CCK FBR CRC field */
7105 if (is_cck_rate(rspec[1])) {
7106 txh->FragPLCPFallback[4] = phylen & 0xff;
7107 txh->FragPLCPFallback[5] = (phylen & 0xff00) >> 8;
7110 /* MIMO-RATE: need validation ?? */
7111 mainrates = is_ofdm_rate(rspec[0]) ?
7112 D11A_PHY_HDR_GRATE((struct ofdm_phy_hdr *) plcp) :
7115 /* DUR field for main rate */
7116 if (!ieee80211_is_pspoll(h->frame_control) &&
7117 !is_multicast_ether_addr(h->addr1) && !use_rifs) {
7119 brcms_c_compute_frame_dur(wlc, rspec[0], preamble_type[0],
7121 h->duration_id = cpu_to_le16(durid);
7122 } else if (use_rifs) {
7123 /* NAV protect to end of next max packet size */
7125 (u16) brcms_c_calc_frame_time(wlc, rspec[0],
7127 DOT11_MAX_FRAG_LEN);
7128 durid += RIFS_11N_TIME;
7129 h->duration_id = cpu_to_le16(durid);
7132 /* DUR field for fallback rate */
7133 if (ieee80211_is_pspoll(h->frame_control))
7134 txh->FragDurFallback = h->duration_id;
7135 else if (is_multicast_ether_addr(h->addr1) || use_rifs)
7136 txh->FragDurFallback = 0;
7138 durid = brcms_c_compute_frame_dur(wlc, rspec[1],
7139 preamble_type[1], next_frag_len);
7140 txh->FragDurFallback = cpu_to_le16(durid);
7143 /* (4) MAC-HDR: MacTxControlLow */
7145 mcl |= TXC_STARTMSDU;
7147 if (!is_multicast_ether_addr(h->addr1))
7148 mcl |= TXC_IMMEDACK;
7150 if (wlc->band->bandtype == BRCM_BAND_5G)
7151 mcl |= TXC_FREQBAND_5G;
7153 if (CHSPEC_IS40(wlc_phy_chanspec_get(wlc->band->pi)))
7156 /* set AMIC bit if using hardware TKIP MIC */
7160 txh->MacTxControlLow = cpu_to_le16(mcl);
7162 /* MacTxControlHigh */
7165 /* Set fallback rate preamble type */
7166 if ((preamble_type[1] == BRCMS_SHORT_PREAMBLE) ||
7167 (preamble_type[1] == BRCMS_GF_PREAMBLE)) {
7168 if (rspec2rate(rspec[1]) != BRCM_RATE_1M)
7169 mch |= TXC_PREAMBLE_DATA_FB_SHORT;
7172 /* MacFrameControl */
7173 memcpy(&txh->MacFrameControl, &h->frame_control, sizeof(u16));
7174 txh->TxFesTimeNormal = cpu_to_le16(0);
7176 txh->TxFesTimeFallback = cpu_to_le16(0);
7179 memcpy(&txh->TxFrameRA, &h->addr1, ETH_ALEN);
7182 txh->TxFrameID = cpu_to_le16(frameid);
7185 * TxStatus, Note the case of recreating the first frag of a suppressed
7186 * frame then we may need to reset the retry cnt's via the status reg
7188 txh->TxStatus = cpu_to_le16(status);
7191 * extra fields for ucode AMPDU aggregation, the new fields are added to
7192 * the END of previous structure so that it's compatible in driver.
7194 txh->MaxNMpdus = cpu_to_le16(0);
7195 txh->MaxABytes_MRT = cpu_to_le16(0);
7196 txh->MaxABytes_FBR = cpu_to_le16(0);
7197 txh->MinMBytes = cpu_to_le16(0);
7199 /* (5) RTS/CTS: determine RTS/CTS PLCP header and MAC duration,
7200 * furnish struct d11txh */
7201 /* RTS PLCP header and RTS frame */
7202 if (use_rts || use_cts) {
7203 if (use_rts && use_cts)
7206 for (k = 0; k < 2; k++) {
7207 rts_rspec[k] = brcms_c_rspec_to_rts_rspec(wlc, rspec[k],
7212 if (!is_ofdm_rate(rts_rspec[0]) &&
7213 !((rspec2rate(rts_rspec[0]) == BRCM_RATE_1M) ||
7214 (wlc->PLCPHdr_override == BRCMS_PLCP_LONG))) {
7215 rts_preamble_type[0] = BRCMS_SHORT_PREAMBLE;
7216 mch |= TXC_PREAMBLE_RTS_MAIN_SHORT;
7219 if (!is_ofdm_rate(rts_rspec[1]) &&
7220 !((rspec2rate(rts_rspec[1]) == BRCM_RATE_1M) ||
7221 (wlc->PLCPHdr_override == BRCMS_PLCP_LONG))) {
7222 rts_preamble_type[1] = BRCMS_SHORT_PREAMBLE;
7223 mch |= TXC_PREAMBLE_RTS_FB_SHORT;
7226 /* RTS/CTS additions to MacTxControlLow */
7228 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDCTS);
7230 txh->MacTxControlLow |= cpu_to_le16(TXC_SENDRTS);
7231 txh->MacTxControlLow |= cpu_to_le16(TXC_LONGFRAME);
7234 /* RTS PLCP header */
7235 rts_plcp = txh->RTSPhyHeader;
7237 rts_phylen = DOT11_CTS_LEN + FCS_LEN;
7239 rts_phylen = DOT11_RTS_LEN + FCS_LEN;
7241 brcms_c_compute_plcp(wlc, rts_rspec[0], rts_phylen, rts_plcp);
7243 /* fallback rate version of RTS PLCP header */
7244 brcms_c_compute_plcp(wlc, rts_rspec[1], rts_phylen,
7246 memcpy(&txh->RTSPLCPFallback, rts_plcp_fallback,
7247 sizeof(txh->RTSPLCPFallback));
7249 /* RTS frame fields... */
7250 rts = (struct ieee80211_rts *)&txh->rts_frame;
7252 durid = brcms_c_compute_rtscts_dur(wlc, use_cts, rts_rspec[0],
7253 rspec[0], rts_preamble_type[0],
7254 preamble_type[0], phylen, false);
7255 rts->duration = cpu_to_le16(durid);
7256 /* fallback rate version of RTS DUR field */
7257 durid = brcms_c_compute_rtscts_dur(wlc, use_cts,
7258 rts_rspec[1], rspec[1],
7259 rts_preamble_type[1],
7260 preamble_type[1], phylen, false);
7261 txh->RTSDurFallback = cpu_to_le16(durid);
7264 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
7265 IEEE80211_STYPE_CTS);
7267 memcpy(&rts->ra, &h->addr2, ETH_ALEN);
7269 rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
7270 IEEE80211_STYPE_RTS);
7272 memcpy(&rts->ra, &h->addr1, 2 * ETH_ALEN);
7276 * low 8 bits: main frag rate/mcs,
7277 * high 8 bits: rts/cts rate/mcs
7279 mainrates |= (is_ofdm_rate(rts_rspec[0]) ?
7281 (struct ofdm_phy_hdr *) rts_plcp) :
7284 memset((char *)txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN);
7285 memset((char *)&txh->rts_frame, 0,
7286 sizeof(struct ieee80211_rts));
7287 memset((char *)txh->RTSPLCPFallback, 0,
7288 sizeof(txh->RTSPLCPFallback));
7289 txh->RTSDurFallback = 0;
7292 #ifdef SUPPORT_40MHZ
7293 /* add null delimiter count */
7294 if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && is_mcs_rate(rspec))
7295 txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] =
7296 brcm_c_ampdu_null_delim_cnt(wlc->ampdu, scb, rspec, phylen);
7301 * Now that RTS/RTS FB preamble types are updated, write
7304 txh->MacTxControlHigh = cpu_to_le16(mch);
7307 * MainRates (both the rts and frag plcp rates have
7308 * been calculated now)
7310 txh->MainRates = cpu_to_le16(mainrates);
7312 /* XtraFrameTypes */
7313 xfts = frametype(rspec[1], wlc->mimoft);
7314 xfts |= (frametype(rts_rspec[0], wlc->mimoft) << XFTS_RTS_FT_SHIFT);
7315 xfts |= (frametype(rts_rspec[1], wlc->mimoft) << XFTS_FBRRTS_FT_SHIFT);
7316 xfts |= CHSPEC_CHANNEL(wlc_phy_chanspec_get(wlc->band->pi)) <<
7318 txh->XtraFrameTypes = cpu_to_le16(xfts);
7320 /* PhyTxControlWord */
7321 phyctl = frametype(rspec[0], wlc->mimoft);
7322 if ((preamble_type[0] == BRCMS_SHORT_PREAMBLE) ||
7323 (preamble_type[0] == BRCMS_GF_PREAMBLE)) {
7324 if (rspec2rate(rspec[0]) != BRCM_RATE_1M)
7325 phyctl |= PHY_TXC_SHORT_HDR;
7328 /* phytxant is properly bit shifted */
7329 phyctl |= brcms_c_stf_d11hdrs_phyctl_txant(wlc, rspec[0]);
7330 txh->PhyTxControlWord = cpu_to_le16(phyctl);
7332 /* PhyTxControlWord_1 */
7333 if (BRCMS_PHY_11N_CAP(wlc->band)) {
7336 phyctl1 = brcms_c_phytxctl1_calc(wlc, rspec[0]);
7337 txh->PhyTxControlWord_1 = cpu_to_le16(phyctl1);
7338 phyctl1 = brcms_c_phytxctl1_calc(wlc, rspec[1]);
7339 txh->PhyTxControlWord_1_Fbr = cpu_to_le16(phyctl1);
7341 if (use_rts || use_cts) {
7342 phyctl1 = brcms_c_phytxctl1_calc(wlc, rts_rspec[0]);
7343 txh->PhyTxControlWord_1_Rts = cpu_to_le16(phyctl1);
7344 phyctl1 = brcms_c_phytxctl1_calc(wlc, rts_rspec[1]);
7345 txh->PhyTxControlWord_1_FbrRts = cpu_to_le16(phyctl1);
7349 * For mcs frames, if mixedmode(overloaded with long preamble)
7350 * is going to be set, fill in non-zero MModeLen and/or
7351 * MModeFbrLen it will be unnecessary if they are separated
7353 if (is_mcs_rate(rspec[0]) &&
7354 (preamble_type[0] == BRCMS_MM_PREAMBLE)) {
7356 brcms_c_calc_lsig_len(wlc, rspec[0], phylen);
7357 txh->MModeLen = cpu_to_le16(mmodelen);
7360 if (is_mcs_rate(rspec[1]) &&
7361 (preamble_type[1] == BRCMS_MM_PREAMBLE)) {
7363 brcms_c_calc_lsig_len(wlc, rspec[1], phylen);
7364 txh->MModeFbrLen = cpu_to_le16(mmodefbrlen);
7368 ac = skb_get_queue_mapping(p);
7369 if ((scb->flags & SCB_WMECAP) && qos && wlc->edcf_txop[ac]) {
7370 uint frag_dur, dur, dur_fallback;
7372 /* WME: Update TXOP threshold */
7373 if (!(tx_info->flags & IEEE80211_TX_CTL_AMPDU) && frag == 0) {
7375 brcms_c_calc_frame_time(wlc, rspec[0],
7376 preamble_type[0], phylen);
7379 /* 1 RTS or CTS-to-self frame */
7381 brcms_c_calc_cts_time(wlc, rts_rspec[0],
7382 rts_preamble_type[0]);
7384 brcms_c_calc_cts_time(wlc, rts_rspec[1],
7385 rts_preamble_type[1]);
7386 /* (SIFS + CTS) + SIFS + frame + SIFS + ACK */
7387 dur += le16_to_cpu(rts->duration);
7389 le16_to_cpu(txh->RTSDurFallback);
7390 } else if (use_rifs) {
7394 /* frame + SIFS + ACK */
7397 brcms_c_compute_frame_dur(wlc, rspec[0],
7398 preamble_type[0], 0);
7401 brcms_c_calc_frame_time(wlc, rspec[1],
7405 brcms_c_compute_frame_dur(wlc, rspec[1],
7406 preamble_type[1], 0);
7408 /* NEED to set TxFesTimeNormal (hard) */
7409 txh->TxFesTimeNormal = cpu_to_le16((u16) dur);
7411 * NEED to set fallback rate version of
7412 * TxFesTimeNormal (hard)
7414 txh->TxFesTimeFallback =
7415 cpu_to_le16((u16) dur_fallback);
7418 * update txop byte threshold (txop minus intraframe
7421 if (wlc->edcf_txop[ac] >= (dur - frag_dur)) {
7425 brcms_c_calc_frame_len(wlc,
7426 rspec[0], preamble_type[0],
7427 (wlc->edcf_txop[ac] -
7429 /* range bound the fragthreshold */
7430 if (newfragthresh < DOT11_MIN_FRAG_LEN)
7433 else if (newfragthresh >
7434 wlc->usr_fragthresh)
7436 wlc->usr_fragthresh;
7437 /* update the fragthresh and do txc update */
7438 if (wlc->fragthresh[queue] !=
7439 (u16) newfragthresh)
7440 wlc->fragthresh[queue] =
7441 (u16) newfragthresh;
7443 wiphy_err(wlc->wiphy, "wl%d: %s txop invalid "
7445 wlc->pub->unit, fifo_names[queue],
7446 rspec2rate(rspec[0]));
7449 if (dur > wlc->edcf_txop[ac])
7450 wiphy_err(wlc->wiphy, "wl%d: %s: %s txop "
7451 "exceeded phylen %d/%d dur %d/%d\n",
7452 wlc->pub->unit, __func__,
7454 phylen, wlc->fragthresh[queue],
7455 dur, wlc->edcf_txop[ac]);
7462 void brcms_c_sendpkt_mac80211(struct brcms_c_info *wlc, struct sk_buff *sdu,
7463 struct ieee80211_hw *hw)
7467 struct scb *scb = &wlc->pri_scb;
7468 struct ieee80211_hdr *d11_header = (struct ieee80211_hdr *)(sdu->data);
7471 * 802.11 standard requires management traffic
7472 * to go at highest priority
7474 prio = ieee80211_is_data(d11_header->frame_control) ? sdu->priority :
7476 fifo = prio2fifo[prio];
7477 if (brcms_c_d11hdrs_mac80211(wlc, hw, sdu, scb, 0, 1, fifo, 0))
7479 brcms_c_txq_enq(wlc, scb, sdu, BRCMS_PRIO_TO_PREC(prio));
7480 brcms_c_send_q(wlc);
7483 void brcms_c_send_q(struct brcms_c_info *wlc)
7485 struct sk_buff *pkt[DOT11_MAXNUMFRAGS];
7488 int err = 0, i, count;
7490 struct brcms_txq_info *qi = wlc->pkt_queue;
7491 struct pktq *q = &qi->q;
7492 struct ieee80211_tx_info *tx_info;
7494 prec_map = wlc->tx_prec_map;
7496 /* Send all the enq'd pkts that we can.
7497 * Dequeue packets with precedence with empty HW fifo only
7499 while (prec_map && (pkt[0] = brcmu_pktq_mdeq(q, prec_map, &prec))) {
7500 tx_info = IEEE80211_SKB_CB(pkt[0]);
7501 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
7502 err = brcms_c_sendampdu(wlc->ampdu, qi, pkt, prec);
7505 err = brcms_c_prep_pdu(wlc, pkt[0], &fifo);
7507 for (i = 0; i < count; i++)
7508 brcms_c_txfifo(wlc, fifo, pkt[i], true,
7513 if (err == -EBUSY) {
7514 brcmu_pktq_penq_head(q, prec, pkt[0]);
7516 * If send failed due to any other reason than a
7517 * change in HW FIFO condition, quit. Otherwise,
7518 * read the new prec_map!
7520 if (prec_map == wlc->tx_prec_map)
7522 prec_map = wlc->tx_prec_map;
7528 brcms_c_txfifo(struct brcms_c_info *wlc, uint fifo, struct sk_buff *p,
7529 bool commit, s8 txpktpend)
7531 u16 frameid = INVALIDFID;
7534 txh = (struct d11txh *) (p->data);
7536 /* When a BC/MC frame is being committed to the BCMC fifo
7537 * via DMA (NOT PIO), update ucode or BSS info as appropriate.
7539 if (fifo == TX_BCMC_FIFO)
7540 frameid = le16_to_cpu(txh->TxFrameID);
7543 * Bump up pending count for if not using rpc. If rpc is
7544 * used, this will be handled in brcms_b_txfifo()
7547 wlc->core->txpktpend[fifo] += txpktpend;
7548 BCMMSG(wlc->wiphy, "pktpend inc %d to %d\n",
7549 txpktpend, wlc->core->txpktpend[fifo]);
7552 /* Commit BCMC sequence number in the SHM frame ID location */
7553 if (frameid != INVALIDFID) {
7555 * To inform the ucode of the last mcast frame posted
7556 * so that it can clear moredata bit
7558 brcms_b_write_shm(wlc->hw, M_BCMC_FID, frameid);
7561 if (dma_txfast(wlc->hw->di[fifo], p, commit) < 0)
7562 wiphy_err(wlc->wiphy, "txfifo: fatal, toss frames !!!\n");
7566 * Compute PLCP, but only requires actual rate and length of pkt.
7567 * Rate is given in the driver standard multiple of 500 kbps.
7568 * le is set for 11 Mbps rate if necessary.
7569 * Broken out for PRQ.
7572 static void brcms_c_cck_plcp_set(struct brcms_c_info *wlc, int rate_500,
7573 uint length, u8 *plcp)
7586 usec = (length << 4) / 11;
7587 if ((length << 4) - (usec * 11) > 0)
7591 usec = (length << 3) / 11;
7592 if ((length << 3) - (usec * 11) > 0) {
7594 if ((usec * 11) - (length << 3) >= 8)
7595 le = D11B_PLCP_SIGNAL_LE;
7600 wiphy_err(wlc->wiphy,
7601 "brcms_c_cck_plcp_set: unsupported rate %d\n",
7603 rate_500 = BRCM_RATE_1M;
7607 /* PLCP signal byte */
7608 plcp[0] = rate_500 * 5; /* r (500kbps) * 5 == r (100kbps) */
7609 /* PLCP service byte */
7610 plcp[1] = (u8) (le | D11B_PLCP_SIGNAL_LOCKED);
7611 /* PLCP length u16, little endian */
7612 plcp[2] = usec & 0xff;
7613 plcp[3] = (usec >> 8) & 0xff;
7619 /* Rate: 802.11 rate code, length: PSDU length in octets */
7620 static void brcms_c_compute_mimo_plcp(u32 rspec, uint length, u8 *plcp)
7622 u8 mcs = (u8) (rspec & RSPEC_RATE_MASK);
7624 if (rspec_is40mhz(rspec) || (mcs == 32))
7625 plcp[0] |= MIMO_PLCP_40MHZ;
7626 BRCMS_SET_MIMO_PLCP_LEN(plcp, length);
7627 plcp[3] = rspec_mimoplcp3(rspec); /* rspec already holds this byte */
7628 plcp[3] |= 0x7; /* set smoothing, not sounding ppdu & reserved */
7629 plcp[4] = 0; /* number of extension spatial streams bit 0 & 1 */
7633 /* Rate: 802.11 rate code, length: PSDU length in octets */
7635 brcms_c_compute_ofdm_plcp(u32 rspec, u32 length, u8 *plcp)
7639 int rate = rspec2rate(rspec);
7642 * encode rate per 802.11a-1999 sec 17.3.4.1, with lsb
7645 rate_signal = rate_info[rate] & BRCMS_RATE_MASK;
7646 memset(plcp, 0, D11_PHY_HDR_LEN);
7647 D11A_PHY_HDR_SRATE((struct ofdm_phy_hdr *) plcp, rate_signal);
7649 tmp = (length & 0xfff) << 5;
7650 plcp[2] |= (tmp >> 16) & 0xff;
7651 plcp[1] |= (tmp >> 8) & 0xff;
7652 plcp[0] |= tmp & 0xff;
7655 /* Rate: 802.11 rate code, length: PSDU length in octets */
7656 static void brcms_c_compute_cck_plcp(struct brcms_c_info *wlc, u32 rspec,
7657 uint length, u8 *plcp)
7659 int rate = rspec2rate(rspec);
7661 brcms_c_cck_plcp_set(wlc, rate, length, plcp);
7665 brcms_c_compute_plcp(struct brcms_c_info *wlc, u32 rspec,
7666 uint length, u8 *plcp)
7668 if (is_mcs_rate(rspec))
7669 brcms_c_compute_mimo_plcp(rspec, length, plcp);
7670 else if (is_ofdm_rate(rspec))
7671 brcms_c_compute_ofdm_plcp(rspec, length, plcp);
7673 brcms_c_compute_cck_plcp(wlc, rspec, length, plcp);
7676 /* brcms_c_compute_rtscts_dur()
7678 * Calculate the 802.11 MAC header DUR field for an RTS or CTS frame
7679 * DUR for normal RTS/CTS w/ frame = 3 SIFS + 1 CTS + next frame time + 1 ACK
7680 * DUR for CTS-TO-SELF w/ frame = 2 SIFS + next frame time + 1 ACK
7682 * cts cts-to-self or rts/cts
7683 * rts_rate rts or cts rate in unit of 500kbps
7684 * rate next MPDU rate in unit of 500kbps
7685 * frame_len next MPDU frame length in bytes
7688 brcms_c_compute_rtscts_dur(struct brcms_c_info *wlc, bool cts_only,
7690 u32 frame_rate, u8 rts_preamble_type,
7691 u8 frame_preamble_type, uint frame_len, bool ba)
7695 sifs = get_sifs(wlc->band);
7701 (u16) brcms_c_calc_cts_time(wlc, rts_rate,
7709 (u16) brcms_c_calc_frame_time(wlc, frame_rate, frame_preamble_type,
7713 (u16) brcms_c_calc_ba_time(wlc, frame_rate,
7714 BRCMS_SHORT_PREAMBLE);
7717 (u16) brcms_c_calc_ack_time(wlc, frame_rate,
7718 frame_preamble_type);
7722 u16 brcms_c_phytxctl1_calc(struct brcms_c_info *wlc, u32 rspec)
7727 if (BRCMS_ISLCNPHY(wlc->band)) {
7728 bw = PHY_TXC1_BW_20MHZ;
7730 bw = rspec_get_bw(rspec);
7731 /* 10Mhz is not supported yet */
7732 if (bw < PHY_TXC1_BW_20MHZ) {
7733 wiphy_err(wlc->wiphy, "phytxctl1_calc: bw %d is "
7734 "not supported yet, set to 20L\n", bw);
7735 bw = PHY_TXC1_BW_20MHZ;
7739 if (is_mcs_rate(rspec)) {
7740 uint mcs = rspec & RSPEC_RATE_MASK;
7742 /* bw, stf, coding-type is part of rspec_phytxbyte2 returns */
7743 phyctl1 = rspec_phytxbyte2(rspec);
7744 /* set the upper byte of phyctl1 */
7745 phyctl1 |= (mcs_table[mcs].tx_phy_ctl3 << 8);
7746 } else if (is_cck_rate(rspec) && !BRCMS_ISLCNPHY(wlc->band)
7747 && !BRCMS_ISSSLPNPHY(wlc->band)) {
7749 * In CCK mode LPPHY overloads OFDM Modulation bits with CCK
7750 * Data Rate. Eventually MIMOPHY would also be converted to
7753 /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */
7754 phyctl1 = (bw | (rspec_stf(rspec) << PHY_TXC1_MODE_SHIFT));
7755 } else { /* legacy OFDM/CCK */
7757 /* get the phyctl byte from rate phycfg table */
7758 phycfg = brcms_c_rate_legacy_phyctl(rspec2rate(rspec));
7760 wiphy_err(wlc->wiphy, "phytxctl1_calc: wrong "
7761 "legacy OFDM/CCK rate\n");
7764 /* set the upper byte of phyctl1 */
7766 (bw | (phycfg << 8) |
7767 (rspec_stf(rspec) << PHY_TXC1_MODE_SHIFT));
7773 brcms_c_rspec_to_rts_rspec(struct brcms_c_info *wlc, u32 rspec,
7774 bool use_rspec, u16 mimo_ctlchbw)
7779 /* use frame rate as rts rate */
7781 else if (wlc->band->gmode && wlc->protection->_g && !is_cck_rate(rspec))
7782 /* Use 11Mbps as the g protection RTS target rate and fallback.
7783 * Use the brcms_basic_rate() lookup to find the best basic rate
7784 * under the target in case 11 Mbps is not Basic.
7785 * 6 and 9 Mbps are not usually selected by rate selection, but
7786 * even if the OFDM rate we are protecting is 6 or 9 Mbps, 11
7789 rts_rspec = brcms_basic_rate(wlc, BRCM_RATE_11M);
7791 /* calculate RTS rate and fallback rate based on the frame rate
7792 * RTS must be sent at a basic rate since it is a
7793 * control frame, sec 9.6 of 802.11 spec
7795 rts_rspec = brcms_basic_rate(wlc, rspec);
7797 if (BRCMS_PHY_11N_CAP(wlc->band)) {
7798 /* set rts txbw to correct side band */
7799 rts_rspec &= ~RSPEC_BW_MASK;
7802 * if rspec/rspec_fallback is 40MHz, then send RTS on both
7803 * 20MHz channel (DUP), otherwise send RTS on control channel
7805 if (rspec_is40mhz(rspec) && !is_cck_rate(rts_rspec))
7806 rts_rspec |= (PHY_TXC1_BW_40MHZ_DUP << RSPEC_BW_SHIFT);
7808 rts_rspec |= (mimo_ctlchbw << RSPEC_BW_SHIFT);
7810 /* pick siso/cdd as default for ofdm */
7811 if (is_ofdm_rate(rts_rspec)) {
7812 rts_rspec &= ~RSPEC_STF_MASK;
7813 rts_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
7819 void brcms_c_tbtt(struct brcms_c_info *wlc)
7821 if (!wlc->bsscfg->BSS)
7823 * DirFrmQ is now valid...defer setting until end
7826 wlc->qvalid |= MCMD_DIRFRMQVAL;
7830 brcms_c_txfifo_complete(struct brcms_c_info *wlc, uint fifo, s8 txpktpend)
7832 wlc->core->txpktpend[fifo] -= txpktpend;
7833 BCMMSG(wlc->wiphy, "pktpend dec %d to %d\n", txpktpend,
7834 wlc->core->txpktpend[fifo]);
7836 /* There is more room; mark precedences related to this FIFO sendable */
7837 wlc->tx_prec_map |= wlc->fifo2prec_map[fifo];
7839 /* figure out which bsscfg is being worked on... */
7842 /* Update beacon listen interval in shared memory */
7843 void brcms_c_bcn_li_upd(struct brcms_c_info *wlc)
7845 /* wake up every DTIM is the default */
7846 if (wlc->bcn_li_dtim == 1)
7847 brcms_b_write_shm(wlc->hw, M_BCN_LI, 0);
7849 brcms_b_write_shm(wlc->hw, M_BCN_LI,
7850 (wlc->bcn_li_dtim << 8) | wlc->bcn_li_bcn);
7854 brcms_b_read_tsf(struct brcms_hardware *wlc_hw, u32 *tsf_l_ptr,
7857 struct d11regs __iomem *regs = wlc_hw->regs;
7859 /* read the tsf timer low, then high to get an atomic read */
7860 *tsf_l_ptr = R_REG(®s->tsf_timerlow);
7861 *tsf_h_ptr = R_REG(®s->tsf_timerhigh);
7865 * recover 64bit TSF value from the 16bit TSF value in the rx header
7866 * given the assumption that the TSF passed in header is within 65ms
7867 * of the current tsf.
7870 * 3.......6.......8.......0.......2.......4.......6.......8......0
7871 * |<---------- tsf_h ----------->||<--- tsf_l -->||<-RxTSFTime ->|
7873 * The RxTSFTime are the lowest 16 bits and provided by the ucode. The
7874 * tsf_l is filled in by brcms_b_recv, which is done earlier in the
7875 * receive call sequence after rx interrupt. Only the higher 16 bits
7876 * are used. Finally, the tsf_h is read from the tsf register.
7878 static u64 brcms_c_recover_tsf64(struct brcms_c_info *wlc,
7879 struct d11rxhdr *rxh)
7882 u16 rx_tsf_0_15, rx_tsf_16_31;
7884 brcms_b_read_tsf(wlc->hw, &tsf_l, &tsf_h);
7886 rx_tsf_16_31 = (u16)(tsf_l >> 16);
7887 rx_tsf_0_15 = rxh->RxTSFTime;
7890 * a greater tsf time indicates the low 16 bits of
7891 * tsf_l wrapped, so decrement the high 16 bits.
7893 if ((u16)tsf_l < rx_tsf_0_15) {
7895 if (rx_tsf_16_31 == 0xffff)
7899 return ((u64)tsf_h << 32) | (((u32)rx_tsf_16_31 << 16) + rx_tsf_0_15);
7903 prep_mac80211_status(struct brcms_c_info *wlc, struct d11rxhdr *rxh,
7905 struct ieee80211_rx_status *rx_status)
7910 unsigned char *plcp;
7912 /* fill in TSF and flag its presence */
7913 rx_status->mactime = brcms_c_recover_tsf64(wlc, rxh);
7914 rx_status->flag |= RX_FLAG_MACTIME_MPDU;
7916 channel = BRCMS_CHAN_CHANNEL(rxh->RxChan);
7919 rx_status->band = IEEE80211_BAND_5GHZ;
7920 rx_status->freq = ieee80211_ofdm_chan_to_freq(
7921 WF_CHAN_FACTOR_5_G/2, channel);
7924 rx_status->band = IEEE80211_BAND_2GHZ;
7925 rx_status->freq = ieee80211_dsss_chan_to_freq(channel);
7928 rx_status->signal = wlc_phy_rssi_compute(wlc->hw->band->pi, rxh);
7932 rx_status->antenna =
7933 (rxh->PhyRxStatus_0 & PRXS0_RXANT_UPSUBBAND) ? 1 : 0;
7937 rspec = brcms_c_compute_rspec(rxh, plcp);
7938 if (is_mcs_rate(rspec)) {
7939 rx_status->rate_idx = rspec & RSPEC_RATE_MASK;
7940 rx_status->flag |= RX_FLAG_HT;
7941 if (rspec_is40mhz(rspec))
7942 rx_status->flag |= RX_FLAG_40MHZ;
7944 switch (rspec2rate(rspec)) {
7946 rx_status->rate_idx = 0;
7949 rx_status->rate_idx = 1;
7952 rx_status->rate_idx = 2;
7955 rx_status->rate_idx = 3;
7958 rx_status->rate_idx = 4;
7961 rx_status->rate_idx = 5;
7964 rx_status->rate_idx = 6;
7967 rx_status->rate_idx = 7;
7970 rx_status->rate_idx = 8;
7973 rx_status->rate_idx = 9;
7976 rx_status->rate_idx = 10;
7979 rx_status->rate_idx = 11;
7982 wiphy_err(wlc->wiphy, "%s: Unknown rate\n", __func__);
7986 * For 5GHz, we should decrease the index as it is
7987 * a subset of the 2.4G rates. See bitrates field
7988 * of brcms_band_5GHz_nphy (in mac80211_if.c).
7990 if (rx_status->band == IEEE80211_BAND_5GHZ)
7991 rx_status->rate_idx -= BRCMS_LEGACY_5G_RATE_OFFSET;
7993 /* Determine short preamble and rate_idx */
7995 if (is_cck_rate(rspec)) {
7996 if (rxh->PhyRxStatus_0 & PRXS0_SHORTH)
7997 rx_status->flag |= RX_FLAG_SHORTPRE;
7998 } else if (is_ofdm_rate(rspec)) {
7999 rx_status->flag |= RX_FLAG_SHORTPRE;
8001 wiphy_err(wlc->wiphy, "%s: Unknown modulation\n",
8006 if (plcp3_issgi(plcp[3]))
8007 rx_status->flag |= RX_FLAG_SHORT_GI;
8009 if (rxh->RxStatus1 & RXS_DECERR) {
8010 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
8011 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_PLCP_CRC\n",
8014 if (rxh->RxStatus1 & RXS_FCSERR) {
8015 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
8016 wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_FCS_CRC\n",
8022 brcms_c_recvctl(struct brcms_c_info *wlc, struct d11rxhdr *rxh,
8026 struct ieee80211_rx_status rx_status;
8028 memset(&rx_status, 0, sizeof(rx_status));
8029 prep_mac80211_status(wlc, rxh, p, &rx_status);
8031 /* mac header+body length, exclude CRC and plcp header */
8032 len_mpdu = p->len - D11_PHY_HDR_LEN - FCS_LEN;
8033 skb_pull(p, D11_PHY_HDR_LEN);
8034 __skb_trim(p, len_mpdu);
8036 memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
8037 ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p);
8040 /* Process received frames */
8042 * Return true if more frames need to be processed. false otherwise.
8043 * Param 'bound' indicates max. # frames to process before break out.
8045 void brcms_c_recv(struct brcms_c_info *wlc, struct sk_buff *p)
8047 struct d11rxhdr *rxh;
8048 struct ieee80211_hdr *h;
8052 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
8054 /* frame starts with rxhdr */
8055 rxh = (struct d11rxhdr *) (p->data);
8057 /* strip off rxhdr */
8058 skb_pull(p, BRCMS_HWRXOFF);
8060 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU subframes */
8061 if (rxh->RxStatus1 & RXS_PBPRES) {
8063 wiphy_err(wlc->wiphy, "wl%d: recv: rcvd runt of "
8064 "len %d\n", wlc->pub->unit, p->len);
8070 h = (struct ieee80211_hdr *)(p->data + D11_PHY_HDR_LEN);
8073 if (rxh->RxStatus1 & RXS_FCSERR) {
8074 if (wlc->pub->mac80211_state & MAC80211_PROMISC_BCNS) {
8075 wiphy_err(wlc->wiphy, "FCSERR while scanning******* -"
8079 wiphy_err(wlc->wiphy, "RCSERR!!!\n");
8084 /* check received pkt has at least frame control field */
8085 if (len < D11_PHY_HDR_LEN + sizeof(h->frame_control))
8088 /* not supporting A-MSDU */
8089 is_amsdu = rxh->RxStatus2 & RXS_AMSDU_MASK;
8093 brcms_c_recvctl(wlc, rxh, p);
8097 brcmu_pkt_buf_free_skb(p);
8100 /* calculate frame duration for Mixed-mode L-SIG spoofing, return
8101 * number of bytes goes in the length field
8103 * Formula given by HT PHY Spec v 1.13
8104 * len = 3(nsyms + nstream + 3) - 3
8107 brcms_c_calc_lsig_len(struct brcms_c_info *wlc, u32 ratespec,
8110 uint nsyms, len = 0, kNdps;
8112 BCMMSG(wlc->wiphy, "wl%d: rate %d, len%d\n",
8113 wlc->pub->unit, rspec2rate(ratespec), mac_len);
8115 if (is_mcs_rate(ratespec)) {
8116 uint mcs = ratespec & RSPEC_RATE_MASK;
8117 int tot_streams = (mcs_2_txstreams(mcs) + 1) +
8118 rspec_stc(ratespec);
8121 * the payload duration calculation matches that
8124 /* 1000Ndbps = kbps * 4 */
8125 kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec),
8126 rspec_issgi(ratespec)) * 4;
8128 if (rspec_stc(ratespec) == 0)
8130 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
8131 APHY_TAIL_NBITS) * 1000, kNdps);
8133 /* STBC needs to have even number of symbols */
8136 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
8137 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
8139 /* (+3) account for HT-SIG(2) and HT-STF(1) */
8140 nsyms += (tot_streams + 3);
8142 * 3 bytes/symbol @ legacy 6Mbps rate
8143 * (-3) excluding service bits and tail bits
8145 len = (3 * nsyms) - 3;
8152 * calculate frame duration of a given rate and length, return
8156 brcms_c_calc_frame_time(struct brcms_c_info *wlc, u32 ratespec,
8157 u8 preamble_type, uint mac_len)
8159 uint nsyms, dur = 0, Ndps, kNdps;
8160 uint rate = rspec2rate(ratespec);
8163 wiphy_err(wlc->wiphy, "wl%d: WAR: using rate of 1 mbps\n",
8165 rate = BRCM_RATE_1M;
8168 BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, len%d\n",
8169 wlc->pub->unit, ratespec, preamble_type, mac_len);
8171 if (is_mcs_rate(ratespec)) {
8172 uint mcs = ratespec & RSPEC_RATE_MASK;
8173 int tot_streams = mcs_2_txstreams(mcs) + rspec_stc(ratespec);
8175 dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT);
8176 if (preamble_type == BRCMS_MM_PREAMBLE)
8178 /* 1000Ndbps = kbps * 4 */
8179 kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec),
8180 rspec_issgi(ratespec)) * 4;
8182 if (rspec_stc(ratespec) == 0)
8184 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
8185 APHY_TAIL_NBITS) * 1000, kNdps);
8187 /* STBC needs to have even number of symbols */
8190 CEIL((APHY_SERVICE_NBITS + 8 * mac_len +
8191 APHY_TAIL_NBITS) * 1000, 2 * kNdps);
8193 dur += APHY_SYMBOL_TIME * nsyms;
8194 if (wlc->band->bandtype == BRCM_BAND_2G)
8195 dur += DOT11_OFDM_SIGNAL_EXTENSION;
8196 } else if (is_ofdm_rate(rate)) {
8197 dur = APHY_PREAMBLE_TIME;
8198 dur += APHY_SIGNAL_TIME;
8199 /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */
8201 /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */
8203 CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS),
8205 dur += APHY_SYMBOL_TIME * nsyms;
8206 if (wlc->band->bandtype == BRCM_BAND_2G)
8207 dur += DOT11_OFDM_SIGNAL_EXTENSION;
8210 * calc # bits * 2 so factor of 2 in rate (1/2 mbps)
8213 mac_len = mac_len * 8 * 2;
8214 /* calc ceiling of bits/rate = microseconds of air time */
8215 dur = (mac_len + rate - 1) / rate;
8216 if (preamble_type & BRCMS_SHORT_PREAMBLE)
8217 dur += BPHY_PLCP_SHORT_TIME;
8219 dur += BPHY_PLCP_TIME;
8224 /* derive wlc->band->basic_rate[] table from 'rateset' */
8225 void brcms_c_rate_lookup_init(struct brcms_c_info *wlc,
8226 struct brcms_c_rateset *rateset)
8232 u8 *br = wlc->band->basic_rate;
8235 /* incoming rates are in 500kbps units as in 802.11 Supported Rates */
8236 memset(br, 0, BRCM_MAXRATE + 1);
8238 /* For each basic rate in the rates list, make an entry in the
8239 * best basic lookup.
8241 for (i = 0; i < rateset->count; i++) {
8242 /* only make an entry for a basic rate */
8243 if (!(rateset->rates[i] & BRCMS_RATE_FLAG))
8246 /* mask off basic bit */
8247 rate = (rateset->rates[i] & BRCMS_RATE_MASK);
8249 if (rate > BRCM_MAXRATE) {
8250 wiphy_err(wlc->wiphy, "brcms_c_rate_lookup_init: "
8251 "invalid rate 0x%X in rate set\n",
8259 /* The rate lookup table now has non-zero entries for each
8260 * basic rate, equal to the basic rate: br[basicN] = basicN
8262 * To look up the best basic rate corresponding to any
8263 * particular rate, code can use the basic_rate table
8266 * basic_rate = wlc->band->basic_rate[tx_rate]
8268 * Make sure there is a best basic rate entry for
8269 * every rate by walking up the table from low rates
8270 * to high, filling in holes in the lookup table
8273 for (i = 0; i < wlc->band->hw_rateset.count; i++) {
8274 rate = wlc->band->hw_rateset.rates[i];
8276 if (br[rate] != 0) {
8277 /* This rate is a basic rate.
8278 * Keep track of the best basic rate so far by
8281 if (is_ofdm_rate(rate))
8289 /* This rate is not a basic rate so figure out the
8290 * best basic rate less than this rate and fill in
8291 * the hole in the table
8294 br[rate] = is_ofdm_rate(rate) ? ofdm_basic : cck_basic;
8299 if (is_ofdm_rate(rate)) {
8301 * In 11g and 11a, the OFDM mandatory rates
8302 * are 6, 12, and 24 Mbps
8304 if (rate >= BRCM_RATE_24M)
8305 mandatory = BRCM_RATE_24M;
8306 else if (rate >= BRCM_RATE_12M)
8307 mandatory = BRCM_RATE_12M;
8309 mandatory = BRCM_RATE_6M;
8311 /* In 11b, all CCK rates are mandatory 1 - 11 Mbps */
8315 br[rate] = mandatory;
8319 static void brcms_c_write_rate_shm(struct brcms_c_info *wlc, u8 rate,
8323 u8 basic_phy_rate, basic_index;
8324 u16 dir_table, basic_table;
8327 /* Shared memory address for the table we are reading */
8328 dir_table = is_ofdm_rate(basic_rate) ? M_RT_DIRMAP_A : M_RT_DIRMAP_B;
8330 /* Shared memory address for the table we are writing */
8331 basic_table = is_ofdm_rate(rate) ? M_RT_BBRSMAP_A : M_RT_BBRSMAP_B;
8334 * for a given rate, the LS-nibble of the PLCP SIGNAL field is
8335 * the index into the rate table.
8337 phy_rate = rate_info[rate] & BRCMS_RATE_MASK;
8338 basic_phy_rate = rate_info[basic_rate] & BRCMS_RATE_MASK;
8339 index = phy_rate & 0xf;
8340 basic_index = basic_phy_rate & 0xf;
8342 /* Find the SHM pointer to the ACK rate entry by looking in the
8345 basic_ptr = brcms_b_read_shm(wlc->hw, (dir_table + basic_index * 2));
8347 /* Update the SHM BSS-basic-rate-set mapping table with the pointer
8348 * to the correct basic rate for the given incoming rate
8350 brcms_b_write_shm(wlc->hw, (basic_table + index * 2), basic_ptr);
8353 static const struct brcms_c_rateset *
8354 brcms_c_rateset_get_hwrs(struct brcms_c_info *wlc)
8356 const struct brcms_c_rateset *rs_dflt;
8358 if (BRCMS_PHY_11N_CAP(wlc->band)) {
8359 if (wlc->band->bandtype == BRCM_BAND_5G)
8360 rs_dflt = &ofdm_mimo_rates;
8362 rs_dflt = &cck_ofdm_mimo_rates;
8363 } else if (wlc->band->gmode)
8364 rs_dflt = &cck_ofdm_rates;
8366 rs_dflt = &cck_rates;
8371 void brcms_c_set_ratetable(struct brcms_c_info *wlc)
8373 const struct brcms_c_rateset *rs_dflt;
8374 struct brcms_c_rateset rs;
8375 u8 rate, basic_rate;
8378 rs_dflt = brcms_c_rateset_get_hwrs(wlc);
8380 brcms_c_rateset_copy(rs_dflt, &rs);
8381 brcms_c_rateset_mcs_upd(&rs, wlc->stf->txstreams);
8383 /* walk the phy rate table and update SHM basic rate lookup table */
8384 for (i = 0; i < rs.count; i++) {
8385 rate = rs.rates[i] & BRCMS_RATE_MASK;
8387 /* for a given rate brcms_basic_rate returns the rate at
8388 * which a response ACK/CTS should be sent.
8390 basic_rate = brcms_basic_rate(wlc, rate);
8391 if (basic_rate == 0)
8392 /* This should only happen if we are using a
8393 * restricted rateset.
8395 basic_rate = rs.rates[0] & BRCMS_RATE_MASK;
8397 brcms_c_write_rate_shm(wlc, rate, basic_rate);
8402 * Return true if the specified rate is supported by the specified band.
8403 * BRCM_BAND_AUTO indicates the current band.
8405 bool brcms_c_valid_rate(struct brcms_c_info *wlc, u32 rspec, int band,
8408 struct brcms_c_rateset *hw_rateset;
8411 if ((band == BRCM_BAND_AUTO) || (band == wlc->band->bandtype))
8412 hw_rateset = &wlc->band->hw_rateset;
8413 else if (wlc->pub->_nbands > 1)
8414 hw_rateset = &wlc->bandstate[OTHERBANDUNIT(wlc)]->hw_rateset;
8416 /* other band specified and we are a single band device */
8419 /* check if this is a mimo rate */
8420 if (is_mcs_rate(rspec)) {
8421 if ((rspec & RSPEC_RATE_MASK) >= MCS_TABLE_SIZE)
8424 return isset(hw_rateset->mcs, (rspec & RSPEC_RATE_MASK));
8427 for (i = 0; i < hw_rateset->count; i++)
8428 if (hw_rateset->rates[i] == rspec2rate(rspec))
8432 wiphy_err(wlc->wiphy, "wl%d: valid_rate: rate spec 0x%x "
8433 "not in hw_rateset\n", wlc->pub->unit, rspec);
8438 void brcms_c_mod_prb_rsp_rate_table(struct brcms_c_info *wlc, uint frame_len)
8440 const struct brcms_c_rateset *rs_dflt;
8441 struct brcms_c_rateset rs;
8444 u8 plcp[D11_PHY_HDR_LEN];
8448 sifs = get_sifs(wlc->band);
8450 rs_dflt = brcms_c_rateset_get_hwrs(wlc);
8452 brcms_c_rateset_copy(rs_dflt, &rs);
8453 brcms_c_rateset_mcs_upd(&rs, wlc->stf->txstreams);
8456 * walk the phy rate table and update MAC core SHM
8457 * basic rate table entries
8459 for (i = 0; i < rs.count; i++) {
8460 rate = rs.rates[i] & BRCMS_RATE_MASK;
8462 entry_ptr = brcms_b_rate_shm_offset(wlc->hw, rate);
8464 /* Calculate the Probe Response PLCP for the given rate */
8465 brcms_c_compute_plcp(wlc, rate, frame_len, plcp);
8468 * Calculate the duration of the Probe Response
8469 * frame plus SIFS for the MAC
8471 dur = (u16) brcms_c_calc_frame_time(wlc, rate,
8472 BRCMS_LONG_PREAMBLE, frame_len);
8475 /* Update the SHM Rate Table entry Probe Response values */
8476 brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_PLCP_POS,
8477 (u16) (plcp[0] + (plcp[1] << 8)));
8478 brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_PLCP_POS + 2,
8479 (u16) (plcp[2] + (plcp[3] << 8)));
8480 brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_DUR_POS, dur);
8484 /* Max buffering needed for beacon template/prb resp template is 142 bytes.
8486 * PLCP header is 6 bytes.
8487 * 802.11 A3 header is 24 bytes.
8488 * Max beacon frame body template length is 112 bytes.
8489 * Max probe resp frame body template length is 110 bytes.
8491 * *len on input contains the max length of the packet available.
8493 * The *len value is set to the number of bytes in buf used, and starts
8494 * with the PLCP and included up to, but not including, the 4 byte FCS.
8497 brcms_c_bcn_prb_template(struct brcms_c_info *wlc, u16 type,
8499 struct brcms_bss_cfg *cfg, u16 *buf, int *len)
8501 static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};
8502 struct cck_phy_hdr *plcp;
8503 struct ieee80211_mgmt *h;
8504 int hdr_len, body_len;
8506 hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
8508 /* calc buffer size provided for frame body */
8509 body_len = *len - hdr_len;
8510 /* return actual size */
8511 *len = hdr_len + body_len;
8513 /* format PHY and MAC headers */
8514 memset((char *)buf, 0, hdr_len);
8516 plcp = (struct cck_phy_hdr *) buf;
8519 * PLCP for Probe Response frames are filled in from
8522 if (type == IEEE80211_STYPE_BEACON)
8524 brcms_c_compute_plcp(wlc, bcn_rspec,
8525 (DOT11_MAC_HDR_LEN + body_len + FCS_LEN),
8528 /* "Regular" and 16 MBSS but not for 4 MBSS */
8529 /* Update the phytxctl for the beacon based on the rspec */
8530 brcms_c_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
8532 h = (struct ieee80211_mgmt *)&plcp[1];
8534 /* fill in 802.11 header */
8535 h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type);
8537 /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
8538 /* A1 filled in by MAC for prb resp, broadcast for bcn */
8539 if (type == IEEE80211_STYPE_BEACON)
8540 memcpy(&h->da, ðer_bcast, ETH_ALEN);
8541 memcpy(&h->sa, &cfg->cur_etheraddr, ETH_ALEN);
8542 memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN);
8544 /* SEQ filled in by MAC */
8547 int brcms_c_get_header_len(void)
8553 * Update all beacons for the system.
8555 void brcms_c_update_beacon(struct brcms_c_info *wlc)
8557 struct brcms_bss_cfg *bsscfg = wlc->bsscfg;
8559 if (bsscfg->up && !bsscfg->BSS)
8560 /* Clear the soft intmask */
8561 wlc->defmacintmask &= ~MI_BCNTPL;
8564 /* Write ssid into shared memory */
8565 void brcms_c_shm_ssid_upd(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg)
8567 u8 *ssidptr = cfg->SSID;
8569 u8 ssidbuf[IEEE80211_MAX_SSID_LEN];
8571 /* padding the ssid with zero and copy it into shm */
8572 memset(ssidbuf, 0, IEEE80211_MAX_SSID_LEN);
8573 memcpy(ssidbuf, ssidptr, cfg->SSID_len);
8575 brcms_c_copyto_shm(wlc, base, ssidbuf, IEEE80211_MAX_SSID_LEN);
8576 brcms_b_write_shm(wlc->hw, M_SSIDLEN, (u16) cfg->SSID_len);
8579 void brcms_c_update_probe_resp(struct brcms_c_info *wlc, bool suspend)
8581 struct brcms_bss_cfg *bsscfg = wlc->bsscfg;
8583 /* update AP or IBSS probe responses */
8584 if (bsscfg->up && !bsscfg->BSS)
8585 brcms_c_bss_update_probe_resp(wlc, bsscfg, suspend);
8589 brcms_c_bss_update_probe_resp(struct brcms_c_info *wlc,
8590 struct brcms_bss_cfg *cfg,
8593 u16 prb_resp[BCN_TMPL_LEN / 2];
8594 int len = BCN_TMPL_LEN;
8597 * write the probe response to hardware, or save in
8598 * the config structure
8601 /* create the probe response template */
8602 brcms_c_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0,
8603 cfg, prb_resp, &len);
8606 brcms_c_suspend_mac_and_wait(wlc);
8608 /* write the probe response into the template region */
8609 brcms_b_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
8610 (len + 3) & ~3, prb_resp);
8612 /* write the length of the probe response frame (+PLCP/-FCS) */
8613 brcms_b_write_shm(wlc->hw, M_PRB_RESP_FRM_LEN, (u16) len);
8615 /* write the SSID and SSID length */
8616 brcms_c_shm_ssid_upd(wlc, cfg);
8619 * Write PLCP headers and durations for probe response frames
8620 * at all rates. Use the actual frame length covered by the
8621 * PLCP header for the call to brcms_c_mod_prb_rsp_rate_table()
8622 * by subtracting the PLCP len and adding the FCS.
8624 len += (-D11_PHY_HDR_LEN + FCS_LEN);
8625 brcms_c_mod_prb_rsp_rate_table(wlc, (u16) len);
8628 brcms_c_enable_mac(wlc);
8631 /* prepares pdu for transmission. returns BCM error codes */
8632 int brcms_c_prep_pdu(struct brcms_c_info *wlc, struct sk_buff *pdu, uint *fifop)
8636 struct ieee80211_hdr *h;
8639 txh = (struct d11txh *) (pdu->data);
8640 h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
8642 /* get the pkt queue info. This was put at brcms_c_sendctl or
8643 * brcms_c_send for PDU */
8644 fifo = le16_to_cpu(txh->TxFrameID) & TXFID_QUEUE_MASK;
8650 /* return if insufficient dma resources */
8651 if (*wlc->core->txavail[fifo] < MAX_DMA_SEGS) {
8652 /* Mark precedences related to this FIFO, unsendable */
8653 /* A fifo is full. Clear precedences related to that FIFO */
8654 wlc->tx_prec_map &= ~(wlc->fifo2prec_map[fifo]);
8660 void brcms_default_rateset(struct brcms_c_info *wlc, struct brcms_c_rateset *rs)
8662 brcms_c_rateset_default(rs, NULL, wlc->band->phytype,
8663 wlc->band->bandtype, false, BRCMS_RATE_MASK_FULL,
8664 (bool) (wlc->pub->_n_enab & SUPPORT_11N),
8665 brcms_chspec_bw(wlc->default_bss->chanspec),
8666 wlc->stf->txstreams);
8669 /* Copy a buffer to shared memory.
8670 * SHM 'offset' needs to be an even address and
8671 * Buffer length 'len' must be an even number of bytes
8673 void brcms_c_copyto_shm(struct brcms_c_info *wlc, uint offset, const void *buf,
8676 brcms_b_copyto_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL);
8679 int brcms_b_xmtfifo_sz_get(struct brcms_hardware *wlc_hw, uint fifo,
8685 *blocks = wlc_hw->xmtfifo_sz[fifo];
8691 brcms_c_set_addrmatch(struct brcms_c_info *wlc, int match_reg_offset,
8694 brcms_b_set_addrmatch(wlc->hw, match_reg_offset, addr);
8695 if (match_reg_offset == RCM_BSSID_OFFSET)
8696 memcpy(wlc->bsscfg->BSSID, addr, ETH_ALEN);
8699 /* check for the particular priority flow control bit being set */
8701 brcms_c_txflowcontrol_prio_isset(struct brcms_c_info *wlc,
8702 struct brcms_txq_info *q,
8707 if (prio == ALLPRIO)
8708 prio_mask = TXQ_STOP_FOR_PRIOFC_MASK;
8710 prio_mask = NBITVAL(prio);
8712 return (q->stopped & prio_mask) == prio_mask;
8715 /* propagate the flow control to all interfaces using the given tx queue */
8716 void brcms_c_txflowcontrol(struct brcms_c_info *wlc,
8717 struct brcms_txq_info *qi,
8723 BCMMSG(wlc->wiphy, "flow control kicks in\n");
8725 if (prio == ALLPRIO)
8726 prio_bits = TXQ_STOP_FOR_PRIOFC_MASK;
8728 prio_bits = NBITVAL(prio);
8730 cur_bits = qi->stopped & prio_bits;
8732 /* Check for the case of no change and return early
8733 * Otherwise update the bit and continue
8736 if (cur_bits == prio_bits)
8739 mboolset(qi->stopped, prio_bits);
8744 mboolclr(qi->stopped, prio_bits);
8747 /* If there is a flow control override we will not change the external
8748 * flow control state.
8750 if (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK)
8753 brcms_c_txflowcontrol_signal(wlc, qi, on, prio);
8757 brcms_c_txflowcontrol_override(struct brcms_c_info *wlc,
8758 struct brcms_txq_info *qi,
8759 bool on, uint override)
8763 prev_override = (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK);
8765 /* Update the flow control bits and do an early return if there is
8766 * no change in the external flow control state.
8769 mboolset(qi->stopped, override);
8770 /* if there was a previous override bit on, then setting this
8771 * makes no difference.
8776 brcms_c_txflowcontrol_signal(wlc, qi, ON, ALLPRIO);
8778 mboolclr(qi->stopped, override);
8779 /* clearing an override bit will only make a difference for
8780 * flow control if it was the only bit set. For any other
8781 * override setting, just return
8783 if (prev_override != override)
8786 if (qi->stopped == 0) {
8787 brcms_c_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
8791 for (prio = MAXPRIO; prio >= 0; prio--) {
8792 if (!mboolisset(qi->stopped, NBITVAL(prio)))
8793 brcms_c_txflowcontrol_signal(
8794 wlc, qi, OFF, prio);
8801 * Flag 'scan in progress' to withhold dynamic phy calibration
8803 void brcms_c_scan_start(struct brcms_c_info *wlc)
8805 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, true);
8808 void brcms_c_scan_stop(struct brcms_c_info *wlc)
8810 wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, false);
8813 void brcms_c_associate_upd(struct brcms_c_info *wlc, bool state)
8815 wlc->pub->associated = state;
8816 wlc->bsscfg->associated = state;
8820 * When a remote STA/AP is removed by Mac80211, or when it can no longer accept
8821 * AMPDU traffic, packets pending in hardware have to be invalidated so that
8822 * when later on hardware releases them, they can be handled appropriately.
8824 void brcms_c_inval_dma_pkts(struct brcms_hardware *hw,
8825 struct ieee80211_sta *sta,
8826 void (*dma_callback_fn))
8828 struct dma_pub *dmah;
8830 for (i = 0; i < NFIFO; i++) {
8833 dma_walk_packets(dmah, dma_callback_fn, sta);
8837 int brcms_c_get_curband(struct brcms_c_info *wlc)
8839 return wlc->band->bandunit;
8842 void brcms_c_wait_for_tx_completion(struct brcms_c_info *wlc, bool drop)
8844 /* flush packet queue when requested */
8846 brcmu_pktq_flush(&wlc->pkt_queue->q, false, NULL, NULL);
8848 /* wait for queue and DMA fifos to run dry */
8849 while (!pktq_empty(&wlc->pkt_queue->q) || brcms_txpktpendtot(wlc) > 0)
8850 brcms_msleep(wlc->wl, 1);
8853 void brcms_c_set_beacon_listen_interval(struct brcms_c_info *wlc, u8 interval)
8855 wlc->bcn_li_bcn = interval;
8857 brcms_c_bcn_li_upd(wlc);
8860 int brcms_c_set_tx_power(struct brcms_c_info *wlc, int txpwr)
8864 /* Remove override bit and clip to max qdbm value */
8865 qdbm = min_t(uint, txpwr * BRCMS_TXPWR_DB_FACTOR, 0xff);
8866 return wlc_phy_txpower_set(wlc->band->pi, qdbm, false);
8869 int brcms_c_get_tx_power(struct brcms_c_info *wlc)
8874 wlc_phy_txpower_get(wlc->band->pi, &qdbm, &override);
8876 /* Return qdbm units */
8877 return (int)(qdbm / BRCMS_TXPWR_DB_FACTOR);
8880 void brcms_c_set_radio_mpc(struct brcms_c_info *wlc, bool mpc)
8883 brcms_c_radio_mpc_upd(wlc);