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a9533e7e HP |
1 | /* |
2 | * Copyright (c) 2010 Broadcom Corporation | |
3 | * | |
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. | |
7 | * | |
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. | |
15 | */ | |
a1c16ed2 | 16 | #include <linux/kernel.h> |
a9533e7e | 17 | #include <wlc_cfg.h> |
a1c16ed2 | 18 | #include <bcmdefs.h> |
a9533e7e HP |
19 | #include <osl.h> |
20 | #include <bcmutils.h> | |
21 | #include <siutils.h> | |
22 | #include <bcmendian.h> | |
a9533e7e | 23 | #include <wlioctl.h> |
a52ba66c | 24 | #include <sbhndpio.h> |
a9533e7e HP |
25 | #include <sbhnddma.h> |
26 | #include <hnddma.h> | |
27 | #include <d11.h> | |
28 | #include <wlc_rate.h> | |
29 | #include <wlc_pub.h> | |
30 | #include <wlc_key.h> | |
69ec303a | 31 | #include <wlc_event.h> |
a9533e7e HP |
32 | #include <wlc_mac80211.h> |
33 | #include <wlc_phy_hal.h> | |
34 | #include <wlc_antsel.h> | |
35 | #include <wlc_scb.h> | |
36 | #include <net/mac80211.h> | |
37 | #include <wlc_ampdu.h> | |
38 | #include <wl_export.h> | |
69ec303a | 39 | #include <wl_dbg.h> |
a9533e7e | 40 | |
a9533e7e HP |
41 | |
42 | #define AMPDU_MAX_MPDU 32 /* max number of mpdus in an ampdu */ | |
43 | #define AMPDU_NUM_MPDU_LEGACY 16 /* max number of mpdus in an ampdu to a legacy */ | |
44 | #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ | |
45 | #define AMPDU_TX_BA_DEF_WSIZE 64 /* default Tx ba window size (in pdu) */ | |
46 | #define AMPDU_RX_BA_DEF_WSIZE 64 /* max Rx ba window size (in pdu) */ | |
47 | #define AMPDU_RX_BA_MAX_WSIZE 64 /* default Rx ba window size (in pdu) */ | |
48 | #define AMPDU_MAX_DUR 5 /* max dur of tx ampdu (in msec) */ | |
49 | #define AMPDU_DEF_RETRY_LIMIT 5 /* default tx retry limit */ | |
50 | #define AMPDU_DEF_RR_RETRY_LIMIT 2 /* default tx retry limit at reg rate */ | |
51 | #define AMPDU_DEF_TXPKT_WEIGHT 2 /* default weight of ampdu in txfifo */ | |
52 | #define AMPDU_DEF_FFPLD_RSVD 2048 /* default ffpld reserved bytes */ | |
53 | #define AMPDU_INI_FREE 10 /* # of inis to be freed on detach */ | |
54 | #define AMPDU_SCB_MAX_RELEASE 20 /* max # of mpdus released at a time */ | |
55 | ||
56 | #define NUM_FFPLD_FIFO 4 /* number of fifo concerned by pre-loading */ | |
57 | #define FFPLD_TX_MAX_UNFL 200 /* default value of the average number of ampdu | |
58 | * without underflows | |
59 | */ | |
60 | #define FFPLD_MPDU_SIZE 1800 /* estimate of maximum mpdu size */ | |
61 | #define FFPLD_MAX_MCS 23 /* we don't deal with mcs 32 */ | |
62 | #define FFPLD_PLD_INCR 1000 /* increments in bytes */ | |
63 | #define FFPLD_MAX_AMPDU_CNT 5000 /* maximum number of ampdu we | |
64 | * accumulate between resets. | |
65 | */ | |
66 | ||
0d706ef4 | 67 | #define TX_SEQ_TO_INDEX(seq) ((seq) % AMPDU_TX_BA_MAX_WSIZE) |
a9533e7e HP |
68 | |
69 | /* max possible overhead per mpdu in the ampdu; 3 is for roundup if needed */ | |
70 | #define AMPDU_MAX_MPDU_OVERHEAD (DOT11_FCS_LEN + DOT11_ICV_AES_LEN + AMPDU_DELIMITER_LEN + 3 \ | |
71 | + DOT11_A4_HDR_LEN + DOT11_QOS_LEN + DOT11_IV_MAX_LEN) | |
72 | ||
73 | #ifdef BCMDBG | |
66cbd3ab | 74 | u32 wl_ampdu_dbg = |
a9533e7e HP |
75 | WL_AMPDU_UPDN_VAL | |
76 | WL_AMPDU_ERR_VAL | | |
77 | WL_AMPDU_TX_VAL | | |
78 | WL_AMPDU_RX_VAL | | |
79 | WL_AMPDU_CTL_VAL | | |
80 | WL_AMPDU_HW_VAL | WL_AMPDU_HWTXS_VAL | WL_AMPDU_HWDBG_VAL; | |
81 | #endif | |
82 | ||
83 | /* structure to hold tx fifo information and pre-loading state | |
84 | * counters specific to tx underflows of ampdus | |
85 | * some counters might be redundant with the ones in wlc or ampdu structures. | |
86 | * This allows to maintain a specific state independantly of | |
87 | * how often and/or when the wlc counters are updated. | |
88 | */ | |
89 | typedef struct wlc_fifo_info { | |
7d4df48e | 90 | u16 ampdu_pld_size; /* number of bytes to be pre-loaded */ |
41feb5ed | 91 | u8 mcs2ampdu_table[FFPLD_MAX_MCS + 1]; /* per-mcs max # of mpdus in an ampdu */ |
7d4df48e | 92 | u16 prev_txfunfl; /* num of underflows last read from the HW macstats counter */ |
66cbd3ab GKH |
93 | u32 accum_txfunfl; /* num of underflows since we modified pld params */ |
94 | u32 accum_txampdu; /* num of tx ampdu since we modified pld params */ | |
95 | u32 prev_txampdu; /* previous reading of tx ampdu */ | |
96 | u32 dmaxferrate; /* estimated dma avg xfer rate in kbits/sec */ | |
a9533e7e HP |
97 | } wlc_fifo_info_t; |
98 | ||
99 | /* AMPDU module specific state */ | |
100 | struct ampdu_info { | |
c6a9e1fc | 101 | struct wlc_info *wlc; /* pointer to main wlc structure */ |
a9533e7e | 102 | int scb_handle; /* scb cubby handle to retrieve data from scb */ |
41feb5ed GKH |
103 | u8 ini_enable[AMPDU_MAX_SCB_TID]; /* per-tid initiator enable/disable of ampdu */ |
104 | u8 ba_tx_wsize; /* Tx ba window size (in pdu) */ | |
105 | u8 ba_rx_wsize; /* Rx ba window size (in pdu) */ | |
106 | u8 retry_limit; /* mpdu transmit retry limit */ | |
107 | u8 rr_retry_limit; /* mpdu transmit retry limit at regular rate */ | |
108 | u8 retry_limit_tid[AMPDU_MAX_SCB_TID]; /* per-tid mpdu transmit retry limit */ | |
a9533e7e | 109 | /* per-tid mpdu transmit retry limit at regular rate */ |
41feb5ed GKH |
110 | u8 rr_retry_limit_tid[AMPDU_MAX_SCB_TID]; |
111 | u8 mpdu_density; /* min mpdu spacing (0-7) ==> 2^(x-1)/8 usec */ | |
562c8850 | 112 | s8 max_pdu; /* max pdus allowed in ampdu */ |
41feb5ed GKH |
113 | u8 dur; /* max duration of an ampdu (in msec) */ |
114 | u8 txpkt_weight; /* weight of ampdu in txfifo; reduces rate lag */ | |
115 | u8 rx_factor; /* maximum rx ampdu factor (0-3) ==> 2^(13+x) bytes */ | |
66cbd3ab GKH |
116 | u32 ffpld_rsvd; /* number of bytes to reserve for preload */ |
117 | u32 max_txlen[MCS_TABLE_SIZE][2][2]; /* max size of ampdu per mcs, bw and sgi */ | |
a9533e7e HP |
118 | void *ini_free[AMPDU_INI_FREE]; /* array of ini's to be freed on detach */ |
119 | bool mfbr; /* enable multiple fallback rate */ | |
66cbd3ab | 120 | u32 tx_max_funl; /* underflows should be kept such that |
a9533e7e HP |
121 | * (tx_max_funfl*underflows) < tx frames |
122 | */ | |
123 | wlc_fifo_info_t fifo_tb[NUM_FFPLD_FIFO]; /* table of fifo infos */ | |
124 | ||
a9533e7e HP |
125 | }; |
126 | ||
127 | #define AMPDU_CLEANUPFLAG_RX (0x1) | |
128 | #define AMPDU_CLEANUPFLAG_TX (0x2) | |
129 | ||
130 | #define SCB_AMPDU_CUBBY(ampdu, scb) (&(scb->scb_ampdu)) | |
131 | #define SCB_AMPDU_INI(scb_ampdu, tid) (&(scb_ampdu->ini[tid])) | |
132 | ||
1f2fd453 | 133 | static void wlc_ffpld_init(struct ampdu_info *ampdu); |
c6a9e1fc | 134 | static int wlc_ffpld_check_txfunfl(struct wlc_info *wlc, int f); |
1f2fd453 | 135 | static void wlc_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f); |
a9533e7e | 136 | |
1f2fd453 | 137 | static scb_ampdu_tid_ini_t *wlc_ampdu_init_tid_ini(struct ampdu_info *ampdu, |
7cc4a4c0 | 138 | scb_ampdu_t *scb_ampdu, |
41feb5ed | 139 | u8 tid, bool override); |
1f2fd453 RV |
140 | static void ampdu_cleanup_tid_ini(struct ampdu_info *ampdu, |
141 | scb_ampdu_t *scb_ampdu, | |
41feb5ed | 142 | u8 tid, bool force); |
1f2fd453 RV |
143 | static void ampdu_update_max_txlen(struct ampdu_info *ampdu, u8 dur); |
144 | static void scb_ampdu_update_config(struct ampdu_info *ampdu, struct scb *scb); | |
145 | static void scb_ampdu_update_config_all(struct ampdu_info *ampdu); | |
a9533e7e HP |
146 | |
147 | #define wlc_ampdu_txflowcontrol(a, b, c) do {} while (0) | |
148 | ||
1f2fd453 RV |
149 | static void wlc_ampdu_dotxstatus_complete(struct ampdu_info *ampdu, |
150 | struct scb *scb, | |
c26b1378 AS |
151 | struct sk_buff *p, tx_status_t *txs, |
152 | u32 frmtxstatus, u32 frmtxstatus2); | |
a9533e7e | 153 | |
c6a9e1fc | 154 | static inline u16 pkt_txh_seqnum(struct wlc_info *wlc, struct sk_buff *p) |
a9533e7e HP |
155 | { |
156 | d11txh_t *txh; | |
157 | struct dot11_header *h; | |
54991ad6 | 158 | txh = (d11txh_t *) p->data; |
41feb5ed | 159 | h = (struct dot11_header *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN); |
90ea2296 | 160 | return ltoh16(h->seq) >> SEQNUM_SHIFT; |
a9533e7e HP |
161 | } |
162 | ||
1f2fd453 | 163 | struct ampdu_info *wlc_ampdu_attach(struct wlc_info *wlc) |
a2627bc0 | 164 | { |
1f2fd453 | 165 | struct ampdu_info *ampdu; |
a9533e7e HP |
166 | int i; |
167 | ||
168 | /* some code depends on packed structures */ | |
7d4df48e | 169 | ASSERT(DOT11_MAXNUMFRAGS == NBITS(u16)); |
a9533e7e HP |
170 | ASSERT(ISPOWEROF2(AMPDU_TX_BA_MAX_WSIZE)); |
171 | ASSERT(ISPOWEROF2(AMPDU_RX_BA_MAX_WSIZE)); | |
172 | ASSERT(wlc->pub->tunables->ampdunummpdu <= AMPDU_MAX_MPDU); | |
173 | ASSERT(wlc->pub->tunables->ampdunummpdu > 0); | |
174 | ||
1f2fd453 | 175 | ampdu = kzalloc(sizeof(struct ampdu_info), GFP_ATOMIC); |
ca8c1e59 | 176 | if (!ampdu) { |
f4528696 JP |
177 | WL_ERROR("wl%d: wlc_ampdu_attach: out of mem\n", |
178 | wlc->pub->unit); | |
a9533e7e HP |
179 | return NULL; |
180 | } | |
a9533e7e HP |
181 | ampdu->wlc = wlc; |
182 | ||
183 | for (i = 0; i < AMPDU_MAX_SCB_TID; i++) | |
0f0881b0 | 184 | ampdu->ini_enable[i] = true; |
a9533e7e | 185 | /* Disable ampdu for VO by default */ |
0965ae88 GKH |
186 | ampdu->ini_enable[PRIO_8021D_VO] = false; |
187 | ampdu->ini_enable[PRIO_8021D_NC] = false; | |
a9533e7e HP |
188 | |
189 | /* Disable ampdu for BK by default since not enough fifo space */ | |
0965ae88 GKH |
190 | ampdu->ini_enable[PRIO_8021D_NONE] = false; |
191 | ampdu->ini_enable[PRIO_8021D_BK] = false; | |
a9533e7e HP |
192 | |
193 | ampdu->ba_tx_wsize = AMPDU_TX_BA_DEF_WSIZE; | |
194 | ampdu->ba_rx_wsize = AMPDU_RX_BA_DEF_WSIZE; | |
195 | ampdu->mpdu_density = AMPDU_DEF_MPDU_DENSITY; | |
196 | ampdu->max_pdu = AUTO; | |
197 | ampdu->dur = AMPDU_MAX_DUR; | |
198 | ampdu->txpkt_weight = AMPDU_DEF_TXPKT_WEIGHT; | |
199 | ||
200 | ampdu->ffpld_rsvd = AMPDU_DEF_FFPLD_RSVD; | |
201 | /* bump max ampdu rcv size to 64k for all 11n devices except 4321A0 and 4321A1 */ | |
202 | if (WLCISNPHY(wlc->band) && NREV_LT(wlc->band->phyrev, 2)) | |
203 | ampdu->rx_factor = AMPDU_RX_FACTOR_32K; | |
204 | else | |
205 | ampdu->rx_factor = AMPDU_RX_FACTOR_64K; | |
a9533e7e HP |
206 | ampdu->retry_limit = AMPDU_DEF_RETRY_LIMIT; |
207 | ampdu->rr_retry_limit = AMPDU_DEF_RR_RETRY_LIMIT; | |
208 | ||
209 | for (i = 0; i < AMPDU_MAX_SCB_TID; i++) { | |
210 | ampdu->retry_limit_tid[i] = ampdu->retry_limit; | |
211 | ampdu->rr_retry_limit_tid[i] = ampdu->rr_retry_limit; | |
212 | } | |
213 | ||
214 | ampdu_update_max_txlen(ampdu, ampdu->dur); | |
0965ae88 | 215 | ampdu->mfbr = false; |
a9533e7e HP |
216 | /* try to set ampdu to the default value */ |
217 | wlc_ampdu_set(ampdu, wlc->pub->_ampdu); | |
218 | ||
219 | ampdu->tx_max_funl = FFPLD_TX_MAX_UNFL; | |
220 | wlc_ffpld_init(ampdu); | |
221 | ||
222 | return ampdu; | |
223 | } | |
224 | ||
1f2fd453 | 225 | void wlc_ampdu_detach(struct ampdu_info *ampdu) |
a2627bc0 | 226 | { |
a9533e7e HP |
227 | int i; |
228 | ||
229 | if (!ampdu) | |
230 | return; | |
231 | ||
232 | /* free all ini's which were to be freed on callbacks which were never called */ | |
233 | for (i = 0; i < AMPDU_INI_FREE; i++) { | |
234 | if (ampdu->ini_free[i]) { | |
182acb3c | 235 | kfree(ampdu->ini_free[i]); |
a9533e7e HP |
236 | } |
237 | } | |
238 | ||
239 | wlc_module_unregister(ampdu->wlc->pub, "ampdu", ampdu); | |
182acb3c | 240 | kfree(ampdu); |
a9533e7e HP |
241 | } |
242 | ||
1f2fd453 | 243 | void scb_ampdu_cleanup(struct ampdu_info *ampdu, struct scb *scb) |
a9533e7e HP |
244 | { |
245 | scb_ampdu_t *scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
41feb5ed | 246 | u8 tid; |
a9533e7e | 247 | |
f4528696 | 248 | WL_AMPDU_UPDN("scb_ampdu_cleanup: enter\n"); |
a9533e7e HP |
249 | ASSERT(scb_ampdu); |
250 | ||
251 | for (tid = 0; tid < AMPDU_MAX_SCB_TID; tid++) { | |
0965ae88 | 252 | ampdu_cleanup_tid_ini(ampdu, scb_ampdu, tid, false); |
a9533e7e HP |
253 | } |
254 | } | |
255 | ||
256 | /* reset the ampdu state machine so that it can gracefully handle packets that were | |
257 | * freed from the dma and tx queues during reinit | |
258 | */ | |
1f2fd453 | 259 | void wlc_ampdu_reset(struct ampdu_info *ampdu) |
a9533e7e | 260 | { |
f4528696 | 261 | WL_NONE("%s: Entering\n", __func__); |
a9533e7e HP |
262 | } |
263 | ||
1f2fd453 | 264 | static void scb_ampdu_update_config(struct ampdu_info *ampdu, struct scb *scb) |
a9533e7e HP |
265 | { |
266 | scb_ampdu_t *scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
267 | int i; | |
268 | ||
41feb5ed | 269 | scb_ampdu->max_pdu = (u8) ampdu->wlc->pub->tunables->ampdunummpdu; |
a9533e7e HP |
270 | |
271 | /* go back to legacy size if some preloading is occuring */ | |
272 | for (i = 0; i < NUM_FFPLD_FIFO; i++) { | |
273 | if (ampdu->fifo_tb[i].ampdu_pld_size > FFPLD_PLD_INCR) | |
274 | scb_ampdu->max_pdu = AMPDU_NUM_MPDU_LEGACY; | |
275 | } | |
276 | ||
277 | /* apply user override */ | |
278 | if (ampdu->max_pdu != AUTO) | |
41feb5ed | 279 | scb_ampdu->max_pdu = (u8) ampdu->max_pdu; |
a9533e7e | 280 | |
697d600d | 281 | scb_ampdu->release = min_t(u8, scb_ampdu->max_pdu, AMPDU_SCB_MAX_RELEASE); |
a9533e7e HP |
282 | |
283 | if (scb_ampdu->max_rxlen) | |
284 | scb_ampdu->release = | |
697d600d | 285 | min_t(u8, scb_ampdu->release, scb_ampdu->max_rxlen / 1600); |
a9533e7e | 286 | |
7068c2f1 | 287 | scb_ampdu->release = min(scb_ampdu->release, |
a9533e7e HP |
288 | ampdu->fifo_tb[TX_AC_BE_FIFO]. |
289 | mcs2ampdu_table[FFPLD_MAX_MCS]); | |
290 | ||
291 | ASSERT(scb_ampdu->release); | |
292 | } | |
293 | ||
1f2fd453 | 294 | void scb_ampdu_update_config_all(struct ampdu_info *ampdu) |
a9533e7e HP |
295 | { |
296 | scb_ampdu_update_config(ampdu, ampdu->wlc->pub->global_scb); | |
297 | } | |
298 | ||
1f2fd453 | 299 | static void wlc_ffpld_init(struct ampdu_info *ampdu) |
a9533e7e HP |
300 | { |
301 | int i, j; | |
302 | wlc_fifo_info_t *fifo; | |
303 | ||
304 | for (j = 0; j < NUM_FFPLD_FIFO; j++) { | |
305 | fifo = (ampdu->fifo_tb + j); | |
306 | fifo->ampdu_pld_size = 0; | |
307 | for (i = 0; i <= FFPLD_MAX_MCS; i++) | |
308 | fifo->mcs2ampdu_table[i] = 255; | |
309 | fifo->dmaxferrate = 0; | |
310 | fifo->accum_txampdu = 0; | |
311 | fifo->prev_txfunfl = 0; | |
312 | fifo->accum_txfunfl = 0; | |
313 | ||
314 | } | |
315 | } | |
316 | ||
317 | /* evaluate the dma transfer rate using the tx underflows as feedback. | |
318 | * If necessary, increase tx fifo preloading. If not enough, | |
319 | * decrease maximum ampdu size for each mcs till underflows stop | |
320 | * Return 1 if pre-loading not active, -1 if not an underflow event, | |
321 | * 0 if pre-loading module took care of the event. | |
322 | */ | |
c6a9e1fc | 323 | static int wlc_ffpld_check_txfunfl(struct wlc_info *wlc, int fid) |
a9533e7e | 324 | { |
1f2fd453 | 325 | struct ampdu_info *ampdu = wlc->ampdu; |
0965ae88 | 326 | u32 phy_rate = MCS_RATE(FFPLD_MAX_MCS, true, false); |
66cbd3ab | 327 | u32 txunfl_ratio; |
41feb5ed | 328 | u8 max_mpdu; |
66cbd3ab | 329 | u32 current_ampdu_cnt = 0; |
7d4df48e | 330 | u16 max_pld_size; |
66cbd3ab | 331 | u32 new_txunfl; |
a9533e7e HP |
332 | wlc_fifo_info_t *fifo = (ampdu->fifo_tb + fid); |
333 | uint xmtfifo_sz; | |
7d4df48e | 334 | u16 cur_txunfl; |
a9533e7e HP |
335 | |
336 | /* return if we got here for a different reason than underflows */ | |
337 | cur_txunfl = | |
338 | wlc_read_shm(wlc, | |
ce0f1b8c | 339 | M_UCODE_MACSTAT + offsetof(macstat_t, txfunfl[fid])); |
7d4df48e | 340 | new_txunfl = (u16) (cur_txunfl - fifo->prev_txfunfl); |
a9533e7e | 341 | if (new_txunfl == 0) { |
f4528696 | 342 | WL_FFPLD("check_txunfl : TX status FRAG set but no tx underflows\n"); |
a9533e7e HP |
343 | return -1; |
344 | } | |
345 | fifo->prev_txfunfl = cur_txunfl; | |
346 | ||
347 | if (!ampdu->tx_max_funl) | |
348 | return 1; | |
349 | ||
350 | /* check if fifo is big enough */ | |
351 | if (wlc_xmtfifo_sz_get(wlc, fid, &xmtfifo_sz)) { | |
f4528696 | 352 | WL_FFPLD("check_txunfl : get xmtfifo_sz failed\n"); |
a9533e7e HP |
353 | return -1; |
354 | } | |
355 | ||
66cbd3ab | 356 | if ((TXFIFO_SIZE_UNIT * (u32) xmtfifo_sz) <= ampdu->ffpld_rsvd) |
a9533e7e HP |
357 | return 1; |
358 | ||
359 | max_pld_size = TXFIFO_SIZE_UNIT * xmtfifo_sz - ampdu->ffpld_rsvd; | |
360 | fifo->accum_txfunfl += new_txunfl; | |
361 | ||
362 | /* we need to wait for at least 10 underflows */ | |
363 | if (fifo->accum_txfunfl < 10) | |
364 | return 0; | |
365 | ||
f4528696 JP |
366 | WL_FFPLD("ampdu_count %d tx_underflows %d\n", |
367 | current_ampdu_cnt, fifo->accum_txfunfl); | |
a9533e7e HP |
368 | |
369 | /* | |
370 | compute the current ratio of tx unfl per ampdu. | |
371 | When the current ampdu count becomes too | |
372 | big while the ratio remains small, we reset | |
373 | the current count in order to not | |
374 | introduce too big of a latency in detecting a | |
375 | large amount of tx underflows later. | |
376 | */ | |
377 | ||
378 | txunfl_ratio = current_ampdu_cnt / fifo->accum_txfunfl; | |
379 | ||
380 | if (txunfl_ratio > ampdu->tx_max_funl) { | |
381 | if (current_ampdu_cnt >= FFPLD_MAX_AMPDU_CNT) { | |
382 | fifo->accum_txfunfl = 0; | |
383 | } | |
384 | return 0; | |
385 | } | |
386 | max_mpdu = | |
697d600d | 387 | min_t(u8, fifo->mcs2ampdu_table[FFPLD_MAX_MCS], AMPDU_NUM_MPDU_LEGACY); |
a9533e7e HP |
388 | |
389 | /* In case max value max_pdu is already lower than | |
390 | the fifo depth, there is nothing more we can do. | |
391 | */ | |
392 | ||
393 | if (fifo->ampdu_pld_size >= max_mpdu * FFPLD_MPDU_SIZE) { | |
394 | WL_FFPLD(("tx fifo pld : max ampdu fits in fifo\n)")); | |
395 | fifo->accum_txfunfl = 0; | |
396 | return 0; | |
397 | } | |
398 | ||
399 | if (fifo->ampdu_pld_size < max_pld_size) { | |
400 | ||
401 | /* increment by TX_FIFO_PLD_INC bytes */ | |
402 | fifo->ampdu_pld_size += FFPLD_PLD_INCR; | |
403 | if (fifo->ampdu_pld_size > max_pld_size) | |
404 | fifo->ampdu_pld_size = max_pld_size; | |
405 | ||
406 | /* update scb release size */ | |
407 | scb_ampdu_update_config_all(ampdu); | |
408 | ||
409 | /* | |
410 | compute a new dma xfer rate for max_mpdu @ max mcs. | |
411 | This is the minimum dma rate that | |
412 | can acheive no unferflow condition for the current mpdu size. | |
413 | */ | |
414 | /* note : we divide/multiply by 100 to avoid integer overflows */ | |
415 | fifo->dmaxferrate = | |
416 | (((phy_rate / 100) * | |
417 | (max_mpdu * FFPLD_MPDU_SIZE - fifo->ampdu_pld_size)) | |
418 | / (max_mpdu * FFPLD_MPDU_SIZE)) * 100; | |
419 | ||
f4528696 JP |
420 | WL_FFPLD("DMA estimated transfer rate %d; pre-load size %d\n", |
421 | fifo->dmaxferrate, fifo->ampdu_pld_size); | |
a9533e7e HP |
422 | } else { |
423 | ||
424 | /* decrease ampdu size */ | |
425 | if (fifo->mcs2ampdu_table[FFPLD_MAX_MCS] > 1) { | |
426 | if (fifo->mcs2ampdu_table[FFPLD_MAX_MCS] == 255) | |
427 | fifo->mcs2ampdu_table[FFPLD_MAX_MCS] = | |
428 | AMPDU_NUM_MPDU_LEGACY - 1; | |
429 | else | |
430 | fifo->mcs2ampdu_table[FFPLD_MAX_MCS] -= 1; | |
431 | ||
432 | /* recompute the table */ | |
433 | wlc_ffpld_calc_mcs2ampdu_table(ampdu, fid); | |
434 | ||
435 | /* update scb release size */ | |
436 | scb_ampdu_update_config_all(ampdu); | |
437 | } | |
438 | } | |
439 | fifo->accum_txfunfl = 0; | |
440 | return 0; | |
441 | } | |
442 | ||
1f2fd453 | 443 | static void wlc_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f) |
a9533e7e HP |
444 | { |
445 | int i; | |
66cbd3ab | 446 | u32 phy_rate, dma_rate, tmp; |
41feb5ed | 447 | u8 max_mpdu; |
a9533e7e HP |
448 | wlc_fifo_info_t *fifo = (ampdu->fifo_tb + f); |
449 | ||
450 | /* recompute the dma rate */ | |
451 | /* note : we divide/multiply by 100 to avoid integer overflows */ | |
452 | max_mpdu = | |
697d600d | 453 | min_t(u8, fifo->mcs2ampdu_table[FFPLD_MAX_MCS], AMPDU_NUM_MPDU_LEGACY); |
0965ae88 | 454 | phy_rate = MCS_RATE(FFPLD_MAX_MCS, true, false); |
a9533e7e HP |
455 | dma_rate = |
456 | (((phy_rate / 100) * | |
457 | (max_mpdu * FFPLD_MPDU_SIZE - fifo->ampdu_pld_size)) | |
458 | / (max_mpdu * FFPLD_MPDU_SIZE)) * 100; | |
459 | fifo->dmaxferrate = dma_rate; | |
460 | ||
461 | /* fill up the mcs2ampdu table; do not recalc the last mcs */ | |
462 | dma_rate = dma_rate >> 7; | |
463 | for (i = 0; i < FFPLD_MAX_MCS; i++) { | |
464 | /* shifting to keep it within integer range */ | |
0965ae88 | 465 | phy_rate = MCS_RATE(i, true, false) >> 7; |
a9533e7e HP |
466 | if (phy_rate > dma_rate) { |
467 | tmp = ((fifo->ampdu_pld_size * phy_rate) / | |
468 | ((phy_rate - dma_rate) * FFPLD_MPDU_SIZE)) + 1; | |
697d600d | 469 | tmp = min_t(u32, tmp, 255); |
41feb5ed | 470 | fifo->mcs2ampdu_table[i] = (u8) tmp; |
a9533e7e HP |
471 | } |
472 | } | |
473 | } | |
474 | ||
475 | static void BCMFASTPATH | |
1f2fd453 | 476 | wlc_ampdu_agg(struct ampdu_info *ampdu, struct scb *scb, struct sk_buff *p, |
c26b1378 | 477 | uint prec) |
a9533e7e HP |
478 | { |
479 | scb_ampdu_t *scb_ampdu; | |
480 | scb_ampdu_tid_ini_t *ini; | |
54991ad6 | 481 | u8 tid = (u8) (p->priority); |
a9533e7e HP |
482 | |
483 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
484 | ||
485 | /* initialize initiator on first packet; sends addba req */ | |
486 | ini = SCB_AMPDU_INI(scb_ampdu, tid); | |
487 | if (ini->magic != INI_MAGIC) { | |
0965ae88 | 488 | ini = wlc_ampdu_init_tid_ini(ampdu, scb_ampdu, tid, false); |
a9533e7e HP |
489 | } |
490 | return; | |
491 | } | |
492 | ||
493 | int BCMFASTPATH | |
1f2fd453 RV |
494 | wlc_sendampdu(struct ampdu_info *ampdu, wlc_txq_info_t *qi, |
495 | struct sk_buff **pdu, int prec) | |
a9533e7e | 496 | { |
c6a9e1fc | 497 | struct wlc_info *wlc; |
e69284f2 | 498 | struct osl_info *osh; |
c26b1378 | 499 | struct sk_buff *p, *pkt[AMPDU_MAX_MPDU]; |
41feb5ed | 500 | u8 tid, ndelim; |
a9533e7e | 501 | int err = 0; |
41feb5ed GKH |
502 | u8 preamble_type = WLC_GF_PREAMBLE; |
503 | u8 fbr_preamble_type = WLC_GF_PREAMBLE; | |
504 | u8 rts_preamble_type = WLC_LONG_PREAMBLE; | |
505 | u8 rts_fbr_preamble_type = WLC_LONG_PREAMBLE; | |
a9533e7e | 506 | |
0965ae88 | 507 | bool rr = true, fbr = false; |
a9533e7e | 508 | uint i, count = 0, fifo, seg_cnt = 0; |
7d4df48e | 509 | u16 plen, len, seq = 0, mcl, mch, index, frameid, dma_len = 0; |
66cbd3ab | 510 | u32 ampdu_len, maxlen = 0; |
a9533e7e | 511 | d11txh_t *txh = NULL; |
41feb5ed | 512 | u8 *plcp; |
a9533e7e HP |
513 | struct dot11_header *h; |
514 | struct scb *scb; | |
515 | scb_ampdu_t *scb_ampdu; | |
516 | scb_ampdu_tid_ini_t *ini; | |
41feb5ed | 517 | u8 mcs = 0; |
0965ae88 | 518 | bool use_rts = false, use_cts = false; |
a9533e7e HP |
519 | ratespec_t rspec = 0, rspec_fallback = 0; |
520 | ratespec_t rts_rspec = 0, rts_rspec_fallback = 0; | |
7d4df48e | 521 | u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ; |
a9533e7e | 522 | struct dot11_rts_frame *rts; |
41feb5ed | 523 | u8 rr_retry_limit; |
a9533e7e HP |
524 | wlc_fifo_info_t *f; |
525 | bool fbr_iscck; | |
526 | struct ieee80211_tx_info *tx_info; | |
7d4df48e | 527 | u16 qlen; |
a9533e7e HP |
528 | |
529 | wlc = ampdu->wlc; | |
530 | osh = wlc->osh; | |
531 | p = *pdu; | |
532 | ||
533 | ASSERT(p); | |
534 | ||
54991ad6 | 535 | tid = (u8) (p->priority); |
a9533e7e HP |
536 | ASSERT(tid < AMPDU_MAX_SCB_TID); |
537 | ||
538 | f = ampdu->fifo_tb + prio2fifo[tid]; | |
539 | ||
540 | scb = wlc->pub->global_scb; | |
541 | ASSERT(scb->magic == SCB_MAGIC); | |
542 | ||
543 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
544 | ASSERT(scb_ampdu); | |
545 | ini = &scb_ampdu->ini[tid]; | |
546 | ||
547 | /* Let pressure continue to build ... */ | |
548 | qlen = pktq_plen(&qi->q, prec); | |
549 | if (ini->tx_in_transit > 0 && qlen < scb_ampdu->max_pdu) { | |
550 | return BCME_BUSY; | |
551 | } | |
552 | ||
553 | wlc_ampdu_agg(ampdu, scb, p, tid); | |
554 | ||
555 | if (wlc->block_datafifo) { | |
f4528696 | 556 | WL_ERROR("%s: Fifo blocked\n", __func__); |
a9533e7e HP |
557 | return BCME_BUSY; |
558 | } | |
559 | rr_retry_limit = ampdu->rr_retry_limit_tid[tid]; | |
560 | ampdu_len = 0; | |
561 | dma_len = 0; | |
562 | while (p) { | |
563 | struct ieee80211_tx_rate *txrate; | |
564 | ||
565 | tx_info = IEEE80211_SKB_CB(p); | |
566 | txrate = tx_info->status.rates; | |
567 | ||
568 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { | |
569 | err = wlc_prep_pdu(wlc, p, &fifo); | |
570 | } else { | |
f4528696 | 571 | WL_ERROR("%s: AMPDU flag is off!\n", __func__); |
a9533e7e HP |
572 | *pdu = NULL; |
573 | err = 0; | |
574 | break; | |
575 | } | |
576 | ||
577 | if (err) { | |
578 | if (err == BCME_BUSY) { | |
f4528696 JP |
579 | WL_ERROR("wl%d: wlc_sendampdu: prep_xdu retry; seq 0x%x\n", |
580 | wlc->pub->unit, seq); | |
a9533e7e HP |
581 | WLCNTINCR(ampdu->cnt->sduretry); |
582 | *pdu = p; | |
583 | break; | |
584 | } | |
585 | ||
586 | /* error in the packet; reject it */ | |
f4528696 JP |
587 | WL_AMPDU_ERR("wl%d: wlc_sendampdu: prep_xdu rejected; seq 0x%x\n", |
588 | wlc->pub->unit, seq); | |
a9533e7e HP |
589 | WLCNTINCR(ampdu->cnt->sdurejected); |
590 | ||
591 | *pdu = NULL; | |
592 | break; | |
593 | } | |
594 | ||
595 | /* pkt is good to be aggregated */ | |
596 | ASSERT(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
54991ad6 | 597 | txh = (d11txh_t *) p->data; |
41feb5ed | 598 | plcp = (u8 *) (txh + 1); |
a9533e7e HP |
599 | h = (struct dot11_header *)(plcp + D11_PHY_HDR_LEN); |
600 | seq = ltoh16(h->seq) >> SEQNUM_SHIFT; | |
601 | index = TX_SEQ_TO_INDEX(seq); | |
602 | ||
603 | /* check mcl fields and test whether it can be agg'd */ | |
604 | mcl = ltoh16(txh->MacTxControlLow); | |
605 | mcl &= ~TXC_AMPDU_MASK; | |
606 | fbr_iscck = !(ltoh16(txh->XtraFrameTypes) & 0x3); | |
607 | ASSERT(!fbr_iscck); | |
608 | txh->PreloadSize = 0; /* always default to 0 */ | |
609 | ||
610 | /* Handle retry limits */ | |
611 | if (txrate[0].count <= rr_retry_limit) { | |
612 | txrate[0].count++; | |
0f0881b0 | 613 | rr = true; |
0965ae88 | 614 | fbr = false; |
a9533e7e HP |
615 | ASSERT(!fbr); |
616 | } else { | |
0f0881b0 | 617 | fbr = true; |
0965ae88 | 618 | rr = false; |
a9533e7e HP |
619 | txrate[1].count++; |
620 | } | |
621 | ||
622 | /* extract the length info */ | |
623 | len = fbr_iscck ? WLC_GET_CCK_PLCP_LEN(txh->FragPLCPFallback) | |
624 | : WLC_GET_MIMO_PLCP_LEN(txh->FragPLCPFallback); | |
625 | ||
626 | /* retrieve null delimiter count */ | |
627 | ndelim = txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM]; | |
628 | seg_cnt += 1; | |
629 | ||
f4528696 JP |
630 | WL_AMPDU_TX("wl%d: wlc_sendampdu: mpdu %d plcp_len %d\n", |
631 | wlc->pub->unit, count, len); | |
a9533e7e HP |
632 | |
633 | /* | |
634 | * aggregateable mpdu. For ucode/hw agg, | |
635 | * test whether need to break or change the epoch | |
636 | */ | |
637 | if (count == 0) { | |
7d4df48e | 638 | u16 fc; |
a9533e7e HP |
639 | mcl |= (TXC_AMPDU_FIRST << TXC_AMPDU_SHIFT); |
640 | /* refill the bits since might be a retx mpdu */ | |
641 | mcl |= TXC_STARTMSDU; | |
642 | rts = (struct dot11_rts_frame *)&txh->rts_frame; | |
643 | fc = ltoh16(rts->fc); | |
644 | if ((fc & FC_KIND_MASK) == FC_RTS) { | |
645 | mcl |= TXC_SENDRTS; | |
0f0881b0 | 646 | use_rts = true; |
a9533e7e HP |
647 | } |
648 | if ((fc & FC_KIND_MASK) == FC_CTS) { | |
649 | mcl |= TXC_SENDCTS; | |
0f0881b0 | 650 | use_cts = true; |
a9533e7e HP |
651 | } |
652 | } else { | |
653 | mcl |= (TXC_AMPDU_MIDDLE << TXC_AMPDU_SHIFT); | |
654 | mcl &= ~(TXC_STARTMSDU | TXC_SENDRTS | TXC_SENDCTS); | |
655 | } | |
656 | ||
e18d5313 | 657 | len = roundup(len, 4); |
a9533e7e HP |
658 | ampdu_len += (len + (ndelim + 1) * AMPDU_DELIMITER_LEN); |
659 | ||
7d4df48e | 660 | dma_len += (u16) pkttotlen(osh, p); |
a9533e7e | 661 | |
f4528696 JP |
662 | WL_AMPDU_TX("wl%d: wlc_sendampdu: ampdu_len %d seg_cnt %d null delim %d\n", |
663 | wlc->pub->unit, ampdu_len, seg_cnt, ndelim); | |
a9533e7e HP |
664 | |
665 | txh->MacTxControlLow = htol16(mcl); | |
666 | ||
667 | /* this packet is added */ | |
668 | pkt[count++] = p; | |
669 | ||
670 | /* patch the first MPDU */ | |
671 | if (count == 1) { | |
41feb5ed | 672 | u8 plcp0, plcp3, is40, sgi; |
a9533e7e HP |
673 | struct ieee80211_sta *sta; |
674 | ||
675 | sta = tx_info->control.sta; | |
676 | ||
677 | if (rr) { | |
678 | plcp0 = plcp[0]; | |
679 | plcp3 = plcp[3]; | |
680 | } else { | |
681 | plcp0 = txh->FragPLCPFallback[0]; | |
682 | plcp3 = txh->FragPLCPFallback[3]; | |
683 | ||
684 | } | |
685 | is40 = (plcp0 & MIMO_PLCP_40MHZ) ? 1 : 0; | |
686 | sgi = PLCP3_ISSGI(plcp3) ? 1 : 0; | |
687 | mcs = plcp0 & ~MIMO_PLCP_40MHZ; | |
688 | ASSERT(mcs < MCS_TABLE_SIZE); | |
689 | maxlen = | |
7068c2f1 | 690 | min(scb_ampdu->max_rxlen, |
a9533e7e HP |
691 | ampdu->max_txlen[mcs][is40][sgi]); |
692 | ||
f4528696 JP |
693 | WL_NONE("sendampdu: sgi %d, is40 %d, mcs %d\n", |
694 | sgi, is40, mcs); | |
a9533e7e HP |
695 | |
696 | maxlen = 64 * 1024; /* XXX Fix me to honor real max_rxlen */ | |
697 | ||
698 | if (is40) | |
699 | mimo_ctlchbw = | |
700 | CHSPEC_SB_UPPER(WLC_BAND_PI_RADIO_CHANSPEC) | |
701 | ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ; | |
702 | ||
703 | /* rebuild the rspec and rspec_fallback */ | |
704 | rspec = RSPEC_MIMORATE; | |
705 | rspec |= plcp[0] & ~MIMO_PLCP_40MHZ; | |
706 | if (plcp[0] & MIMO_PLCP_40MHZ) | |
707 | rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT); | |
708 | ||
709 | if (fbr_iscck) /* CCK */ | |
710 | rspec_fallback = | |
711 | CCK_RSPEC(CCK_PHY2MAC_RATE | |
712 | (txh->FragPLCPFallback[0])); | |
713 | else { /* MIMO */ | |
714 | rspec_fallback = RSPEC_MIMORATE; | |
715 | rspec_fallback |= | |
716 | txh->FragPLCPFallback[0] & ~MIMO_PLCP_40MHZ; | |
717 | if (txh->FragPLCPFallback[0] & MIMO_PLCP_40MHZ) | |
718 | rspec_fallback |= | |
719 | (PHY_TXC1_BW_40MHZ << | |
720 | RSPEC_BW_SHIFT); | |
721 | } | |
722 | ||
723 | if (use_rts || use_cts) { | |
724 | rts_rspec = | |
0965ae88 | 725 | wlc_rspec_to_rts_rspec(wlc, rspec, false, |
a9533e7e HP |
726 | mimo_ctlchbw); |
727 | rts_rspec_fallback = | |
728 | wlc_rspec_to_rts_rspec(wlc, rspec_fallback, | |
0965ae88 | 729 | false, mimo_ctlchbw); |
a9533e7e HP |
730 | } |
731 | } | |
732 | ||
733 | /* if (first mpdu for host agg) */ | |
734 | /* test whether to add more */ | |
0965ae88 | 735 | if ((MCS_RATE(mcs, true, false) >= f->dmaxferrate) && |
a9533e7e | 736 | (count == f->mcs2ampdu_table[mcs])) { |
f4528696 JP |
737 | WL_AMPDU_ERR("wl%d: PR 37644: stopping ampdu at %d for mcs %d\n", |
738 | wlc->pub->unit, count, mcs); | |
a9533e7e HP |
739 | break; |
740 | } | |
741 | ||
742 | if (count == scb_ampdu->max_pdu) { | |
f4528696 JP |
743 | WL_NONE("Stop taking from q, reached %d deep\n", |
744 | scb_ampdu->max_pdu); | |
a9533e7e HP |
745 | break; |
746 | } | |
747 | ||
748 | /* check to see if the next pkt is a candidate for aggregation */ | |
749 | p = pktq_ppeek(&qi->q, prec); | |
750 | tx_info = IEEE80211_SKB_CB(p); /* tx_info must be checked with current p */ | |
751 | ||
752 | if (p) { | |
753 | if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && | |
54991ad6 | 754 | ((u8) (p->priority) == tid)) { |
a9533e7e HP |
755 | |
756 | plen = | |
757 | pkttotlen(osh, p) + AMPDU_MAX_MPDU_OVERHEAD; | |
3ea2f4d6 | 758 | plen = max(scb_ampdu->min_len, plen); |
a9533e7e HP |
759 | |
760 | if ((plen + ampdu_len) > maxlen) { | |
761 | p = NULL; | |
f4528696 JP |
762 | WL_ERROR("%s: Bogus plen #1\n", |
763 | __func__); | |
a9533e7e HP |
764 | ASSERT(3 == 4); |
765 | continue; | |
766 | } | |
767 | ||
768 | /* check if there are enough descriptors available */ | |
769 | if (TXAVAIL(wlc, fifo) <= (seg_cnt + 1)) { | |
f4528696 JP |
770 | WL_ERROR("%s: No fifo space !!!!!!\n", |
771 | __func__); | |
a9533e7e HP |
772 | p = NULL; |
773 | continue; | |
774 | } | |
775 | p = pktq_pdeq(&qi->q, prec); | |
776 | ASSERT(p); | |
777 | } else { | |
778 | p = NULL; | |
779 | } | |
780 | } | |
781 | } /* end while(p) */ | |
782 | ||
783 | ini->tx_in_transit += count; | |
784 | ||
785 | if (count) { | |
786 | WLCNTADD(ampdu->cnt->txmpdu, count); | |
787 | ||
788 | /* patch up the last txh */ | |
54991ad6 | 789 | txh = (d11txh_t *) pkt[count - 1]->data; |
a9533e7e HP |
790 | mcl = ltoh16(txh->MacTxControlLow); |
791 | mcl &= ~TXC_AMPDU_MASK; | |
792 | mcl |= (TXC_AMPDU_LAST << TXC_AMPDU_SHIFT); | |
793 | txh->MacTxControlLow = htol16(mcl); | |
794 | ||
795 | /* remove the null delimiter after last mpdu */ | |
796 | ndelim = txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM]; | |
797 | txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] = 0; | |
798 | ampdu_len -= ndelim * AMPDU_DELIMITER_LEN; | |
799 | ||
800 | /* remove the pad len from last mpdu */ | |
801 | fbr_iscck = ((ltoh16(txh->XtraFrameTypes) & 0x3) == 0); | |
802 | len = fbr_iscck ? WLC_GET_CCK_PLCP_LEN(txh->FragPLCPFallback) | |
803 | : WLC_GET_MIMO_PLCP_LEN(txh->FragPLCPFallback); | |
e18d5313 | 804 | ampdu_len -= roundup(len, 4) - len; |
a9533e7e HP |
805 | |
806 | /* patch up the first txh & plcp */ | |
54991ad6 | 807 | txh = (d11txh_t *) pkt[0]->data; |
41feb5ed | 808 | plcp = (u8 *) (txh + 1); |
a9533e7e HP |
809 | |
810 | WLC_SET_MIMO_PLCP_LEN(plcp, ampdu_len); | |
811 | /* mark plcp to indicate ampdu */ | |
812 | WLC_SET_MIMO_PLCP_AMPDU(plcp); | |
813 | ||
814 | /* reset the mixed mode header durations */ | |
815 | if (txh->MModeLen) { | |
7d4df48e | 816 | u16 mmodelen = |
a9533e7e HP |
817 | wlc_calc_lsig_len(wlc, rspec, ampdu_len); |
818 | txh->MModeLen = htol16(mmodelen); | |
819 | preamble_type = WLC_MM_PREAMBLE; | |
820 | } | |
821 | if (txh->MModeFbrLen) { | |
7d4df48e | 822 | u16 mmfbrlen = |
a9533e7e HP |
823 | wlc_calc_lsig_len(wlc, rspec_fallback, ampdu_len); |
824 | txh->MModeFbrLen = htol16(mmfbrlen); | |
825 | fbr_preamble_type = WLC_MM_PREAMBLE; | |
826 | } | |
827 | ||
828 | /* set the preload length */ | |
0965ae88 | 829 | if (MCS_RATE(mcs, true, false) >= f->dmaxferrate) { |
7068c2f1 | 830 | dma_len = min(dma_len, f->ampdu_pld_size); |
a9533e7e HP |
831 | txh->PreloadSize = htol16(dma_len); |
832 | } else | |
833 | txh->PreloadSize = 0; | |
834 | ||
835 | mch = ltoh16(txh->MacTxControlHigh); | |
836 | ||
837 | /* update RTS dur fields */ | |
838 | if (use_rts || use_cts) { | |
7d4df48e | 839 | u16 durid; |
a9533e7e HP |
840 | rts = (struct dot11_rts_frame *)&txh->rts_frame; |
841 | if ((mch & TXC_PREAMBLE_RTS_MAIN_SHORT) == | |
842 | TXC_PREAMBLE_RTS_MAIN_SHORT) | |
843 | rts_preamble_type = WLC_SHORT_PREAMBLE; | |
844 | ||
845 | if ((mch & TXC_PREAMBLE_RTS_FB_SHORT) == | |
846 | TXC_PREAMBLE_RTS_FB_SHORT) | |
847 | rts_fbr_preamble_type = WLC_SHORT_PREAMBLE; | |
848 | ||
849 | durid = | |
850 | wlc_compute_rtscts_dur(wlc, use_cts, rts_rspec, | |
851 | rspec, rts_preamble_type, | |
852 | preamble_type, ampdu_len, | |
0f0881b0 | 853 | true); |
a9533e7e HP |
854 | rts->durid = htol16(durid); |
855 | durid = wlc_compute_rtscts_dur(wlc, use_cts, | |
856 | rts_rspec_fallback, | |
857 | rspec_fallback, | |
858 | rts_fbr_preamble_type, | |
859 | fbr_preamble_type, | |
0f0881b0 | 860 | ampdu_len, true); |
a9533e7e HP |
861 | txh->RTSDurFallback = htol16(durid); |
862 | /* set TxFesTimeNormal */ | |
863 | txh->TxFesTimeNormal = rts->durid; | |
864 | /* set fallback rate version of TxFesTimeNormal */ | |
865 | txh->TxFesTimeFallback = txh->RTSDurFallback; | |
866 | } | |
867 | ||
868 | /* set flag and plcp for fallback rate */ | |
869 | if (fbr) { | |
870 | WLCNTADD(ampdu->cnt->txfbr_mpdu, count); | |
871 | WLCNTINCR(ampdu->cnt->txfbr_ampdu); | |
872 | mch |= TXC_AMPDU_FBR; | |
873 | txh->MacTxControlHigh = htol16(mch); | |
874 | WLC_SET_MIMO_PLCP_AMPDU(plcp); | |
875 | WLC_SET_MIMO_PLCP_AMPDU(txh->FragPLCPFallback); | |
876 | } | |
877 | ||
f4528696 JP |
878 | WL_AMPDU_TX("wl%d: wlc_sendampdu: count %d ampdu_len %d\n", |
879 | wlc->pub->unit, count, ampdu_len); | |
a9533e7e HP |
880 | |
881 | /* inform rate_sel if it this is a rate probe pkt */ | |
882 | frameid = ltoh16(txh->TxFrameID); | |
883 | if (frameid & TXFID_RATE_PROBE_MASK) { | |
f4528696 JP |
884 | WL_ERROR("%s: XXX what to do with TXFID_RATE_PROBE_MASK!?\n", |
885 | __func__); | |
a9533e7e | 886 | } |
a9533e7e HP |
887 | for (i = 0; i < count; i++) |
888 | wlc_txfifo(wlc, fifo, pkt[i], i == (count - 1), | |
889 | ampdu->txpkt_weight); | |
a9533e7e HP |
890 | |
891 | } | |
892 | /* endif (count) */ | |
893 | return err; | |
894 | } | |
895 | ||
896 | void BCMFASTPATH | |
1f2fd453 RV |
897 | wlc_ampdu_dotxstatus(struct ampdu_info *ampdu, struct scb *scb, |
898 | struct sk_buff *p, tx_status_t *txs) | |
a9533e7e HP |
899 | { |
900 | scb_ampdu_t *scb_ampdu; | |
c6a9e1fc | 901 | struct wlc_info *wlc = ampdu->wlc; |
a9533e7e | 902 | scb_ampdu_tid_ini_t *ini; |
66cbd3ab | 903 | u32 s1 = 0, s2 = 0; |
a9533e7e HP |
904 | struct ieee80211_tx_info *tx_info; |
905 | ||
906 | tx_info = IEEE80211_SKB_CB(p); | |
907 | ASSERT(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
908 | ASSERT(scb); | |
909 | ASSERT(scb->magic == SCB_MAGIC); | |
910 | ASSERT(txs->status & TX_STATUS_AMPDU); | |
911 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
912 | ASSERT(scb_ampdu); | |
54991ad6 | 913 | ini = SCB_AMPDU_INI(scb_ampdu, p->priority); |
a9533e7e HP |
914 | ASSERT(ini->scb == scb); |
915 | ||
916 | /* BMAC_NOTE: For the split driver, second level txstatus comes later | |
917 | * So if the ACK was received then wait for the second level else just | |
918 | * call the first one | |
919 | */ | |
920 | if (txs->status & TX_STATUS_ACK_RCV) { | |
41feb5ed | 921 | u8 status_delay = 0; |
a9533e7e HP |
922 | |
923 | /* wait till the next 8 bytes of txstatus is available */ | |
924 | while (((s1 = | |
925 | R_REG(wlc->osh, | |
926 | &wlc->regs->frmtxstatus)) & TXS_V) == 0) { | |
7383141b | 927 | udelay(1); |
a9533e7e HP |
928 | status_delay++; |
929 | if (status_delay > 10) { | |
930 | ASSERT(status_delay <= 10); | |
931 | return; | |
932 | } | |
933 | } | |
934 | ||
935 | ASSERT(!(s1 & TX_STATUS_INTERMEDIATE)); | |
936 | ASSERT(s1 & TX_STATUS_AMPDU); | |
937 | s2 = R_REG(wlc->osh, &wlc->regs->frmtxstatus2); | |
a9533e7e HP |
938 | } |
939 | ||
940 | wlc_ampdu_dotxstatus_complete(ampdu, scb, p, txs, s1, s2); | |
941 | wlc_ampdu_txflowcontrol(wlc, scb_ampdu, ini); | |
942 | } | |
943 | ||
a9533e7e | 944 | void |
c6a9e1fc | 945 | rate_status(struct wlc_info *wlc, struct ieee80211_tx_info *tx_info, |
41feb5ed | 946 | tx_status_t *txs, u8 mcs) |
a9533e7e HP |
947 | { |
948 | struct ieee80211_tx_rate *txrate = tx_info->status.rates; | |
949 | int i; | |
950 | ||
951 | /* clear the rest of the rates */ | |
952 | for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) { | |
953 | txrate[i].idx = -1; | |
954 | txrate[i].count = 0; | |
955 | } | |
956 | } | |
957 | ||
a9533e7e HP |
958 | #define SHORTNAME "AMPDU status" |
959 | ||
960 | static void BCMFASTPATH | |
1f2fd453 | 961 | wlc_ampdu_dotxstatus_complete(struct ampdu_info *ampdu, struct scb *scb, |
c26b1378 AS |
962 | struct sk_buff *p, tx_status_t *txs, |
963 | u32 s1, u32 s2) | |
a9533e7e HP |
964 | { |
965 | scb_ampdu_t *scb_ampdu; | |
c6a9e1fc | 966 | struct wlc_info *wlc = ampdu->wlc; |
a9533e7e | 967 | scb_ampdu_tid_ini_t *ini; |
41feb5ed | 968 | u8 bitmap[8], queue, tid; |
a9533e7e | 969 | d11txh_t *txh; |
41feb5ed | 970 | u8 *plcp; |
a9533e7e | 971 | struct dot11_header *h; |
7d4df48e | 972 | u16 seq, start_seq = 0, bindex, index, mcl; |
41feb5ed | 973 | u8 mcs = 0; |
0965ae88 | 974 | bool ba_recd = false, ack_recd = false; |
41feb5ed | 975 | u8 suc_mpdu = 0, tot_mpdu = 0; |
a9533e7e | 976 | uint supr_status; |
0965ae88 | 977 | bool update_rate = true, retry = true, tx_error = false; |
7d4df48e | 978 | u16 mimoantsel = 0; |
41feb5ed GKH |
979 | u8 antselid = 0; |
980 | u8 retry_limit, rr_retry_limit; | |
a9533e7e HP |
981 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(p); |
982 | ||
983 | #ifdef BCMDBG | |
41feb5ed | 984 | u8 hole[AMPDU_MAX_MPDU]; |
9249ede9 | 985 | memset(hole, 0, sizeof(hole)); |
a9533e7e HP |
986 | #endif |
987 | ||
988 | ASSERT(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
989 | ASSERT(txs->status & TX_STATUS_AMPDU); | |
990 | ||
991 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
992 | ASSERT(scb_ampdu); | |
993 | ||
54991ad6 | 994 | tid = (u8) (p->priority); |
a9533e7e HP |
995 | |
996 | ini = SCB_AMPDU_INI(scb_ampdu, tid); | |
997 | retry_limit = ampdu->retry_limit_tid[tid]; | |
998 | rr_retry_limit = ampdu->rr_retry_limit_tid[tid]; | |
999 | ||
1000 | ASSERT(ini->scb == scb); | |
1001 | ||
9249ede9 | 1002 | memset(bitmap, 0, sizeof(bitmap)); |
a9533e7e HP |
1003 | queue = txs->frameid & TXFID_QUEUE_MASK; |
1004 | ASSERT(queue < AC_COUNT); | |
1005 | ||
1006 | supr_status = txs->status & TX_STATUS_SUPR_MASK; | |
1007 | ||
1008 | if (txs->status & TX_STATUS_ACK_RCV) { | |
1009 | if (TX_STATUS_SUPR_UF == supr_status) { | |
0965ae88 | 1010 | update_rate = false; |
a9533e7e HP |
1011 | } |
1012 | ||
1013 | ASSERT(txs->status & TX_STATUS_INTERMEDIATE); | |
1014 | start_seq = txs->sequence >> SEQNUM_SHIFT; | |
1015 | bitmap[0] = (txs->status & TX_STATUS_BA_BMAP03_MASK) >> | |
1016 | TX_STATUS_BA_BMAP03_SHIFT; | |
1017 | ||
1018 | ASSERT(!(s1 & TX_STATUS_INTERMEDIATE)); | |
1019 | ASSERT(s1 & TX_STATUS_AMPDU); | |
1020 | ||
1021 | bitmap[0] |= | |
1022 | (s1 & TX_STATUS_BA_BMAP47_MASK) << | |
1023 | TX_STATUS_BA_BMAP47_SHIFT; | |
1024 | bitmap[1] = (s1 >> 8) & 0xff; | |
1025 | bitmap[2] = (s1 >> 16) & 0xff; | |
1026 | bitmap[3] = (s1 >> 24) & 0xff; | |
1027 | ||
1028 | bitmap[4] = s2 & 0xff; | |
1029 | bitmap[5] = (s2 >> 8) & 0xff; | |
1030 | bitmap[6] = (s2 >> 16) & 0xff; | |
1031 | bitmap[7] = (s2 >> 24) & 0xff; | |
1032 | ||
0f0881b0 | 1033 | ba_recd = true; |
a9533e7e HP |
1034 | } else { |
1035 | WLCNTINCR(ampdu->cnt->noba); | |
1036 | if (supr_status) { | |
0965ae88 | 1037 | update_rate = false; |
a9533e7e | 1038 | if (supr_status == TX_STATUS_SUPR_BADCH) { |
f4528696 JP |
1039 | WL_ERROR("%s: Pkt tx suppressed, illegal channel possibly %d\n", |
1040 | __func__, | |
1041 | CHSPEC_CHANNEL(wlc->default_bss->chanspec)); | |
a9533e7e HP |
1042 | } else { |
1043 | if (supr_status == TX_STATUS_SUPR_FRAG) | |
f4528696 JP |
1044 | WL_NONE("%s: AMPDU frag err\n", |
1045 | __func__); | |
a9533e7e | 1046 | else |
f4528696 JP |
1047 | WL_ERROR("%s: wlc_ampdu_dotxstatus: supr_status 0x%x\n", |
1048 | __func__, supr_status); | |
a9533e7e HP |
1049 | } |
1050 | /* no need to retry for badch; will fail again */ | |
1051 | if (supr_status == TX_STATUS_SUPR_BADCH || | |
1052 | supr_status == TX_STATUS_SUPR_EXPTIME) { | |
0965ae88 | 1053 | retry = false; |
a9533e7e HP |
1054 | WLCNTINCR(wlc->pub->_cnt->txchanrej); |
1055 | } else if (supr_status == TX_STATUS_SUPR_EXPTIME) { | |
1056 | ||
1057 | WLCNTINCR(wlc->pub->_cnt->txexptime); | |
1058 | ||
1059 | /* TX underflow : try tuning pre-loading or ampdu size */ | |
1060 | } else if (supr_status == TX_STATUS_SUPR_FRAG) { | |
1061 | /* if there were underflows, but pre-loading is not active, | |
1062 | notify rate adaptation. | |
1063 | */ | |
1064 | if (wlc_ffpld_check_txfunfl(wlc, prio2fifo[tid]) | |
1065 | > 0) { | |
0f0881b0 | 1066 | tx_error = true; |
a9533e7e HP |
1067 | } |
1068 | } | |
1069 | } else if (txs->phyerr) { | |
0965ae88 | 1070 | update_rate = false; |
a9533e7e | 1071 | WLCNTINCR(wlc->pub->_cnt->txphyerr); |
f4528696 JP |
1072 | WL_ERROR("wl%d: wlc_ampdu_dotxstatus: tx phy error (0x%x)\n", |
1073 | wlc->pub->unit, txs->phyerr); | |
a9533e7e HP |
1074 | |
1075 | #ifdef BCMDBG | |
1076 | if (WL_ERROR_ON()) { | |
1077 | prpkt("txpkt (AMPDU)", wlc->osh, p); | |
54991ad6 | 1078 | wlc_print_txdesc((d11txh_t *) p->data); |
a9533e7e HP |
1079 | wlc_print_txstatus(txs); |
1080 | } | |
1081 | #endif /* BCMDBG */ | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | /* loop through all pkts and retry if not acked */ | |
1086 | while (p) { | |
1087 | tx_info = IEEE80211_SKB_CB(p); | |
1088 | ASSERT(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
54991ad6 | 1089 | txh = (d11txh_t *) p->data; |
a9533e7e | 1090 | mcl = ltoh16(txh->MacTxControlLow); |
41feb5ed | 1091 | plcp = (u8 *) (txh + 1); |
a9533e7e HP |
1092 | h = (struct dot11_header *)(plcp + D11_PHY_HDR_LEN); |
1093 | seq = ltoh16(h->seq) >> SEQNUM_SHIFT; | |
1094 | ||
1095 | if (tot_mpdu == 0) { | |
1096 | mcs = plcp[0] & MIMO_PLCP_MCS_MASK; | |
1097 | mimoantsel = ltoh16(txh->ABI_MimoAntSel); | |
1098 | } | |
1099 | ||
1100 | index = TX_SEQ_TO_INDEX(seq); | |
0965ae88 | 1101 | ack_recd = false; |
a9533e7e HP |
1102 | if (ba_recd) { |
1103 | bindex = MODSUB_POW2(seq, start_seq, SEQNUM_MAX); | |
1104 | ||
f4528696 JP |
1105 | WL_AMPDU_TX("%s: tid %d seq is %d, start_seq is %d, bindex is %d set %d, index %d\n", |
1106 | __func__, tid, seq, start_seq, bindex, | |
1107 | isset(bitmap, bindex), index); | |
a9533e7e HP |
1108 | |
1109 | /* if acked then clear bit and free packet */ | |
1110 | if ((bindex < AMPDU_TX_BA_MAX_WSIZE) | |
1111 | && isset(bitmap, bindex)) { | |
1112 | ini->tx_in_transit--; | |
1113 | ini->txretry[index] = 0; | |
1114 | ||
1115 | /* ampdu_ack_len: number of acked aggregated frames */ | |
1116 | /* ampdu_ack_map: block ack bit map for the aggregation */ | |
1117 | /* ampdu_len: number of aggregated frames */ | |
1118 | rate_status(wlc, tx_info, txs, mcs); | |
1119 | tx_info->flags |= IEEE80211_TX_STAT_ACK; | |
1120 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1121 | ||
1122 | /* XXX TODO: Make these accurate. */ | |
1123 | tx_info->status.ampdu_ack_len = | |
1124 | (txs-> | |
1125 | status & TX_STATUS_FRM_RTX_MASK) >> | |
1126 | TX_STATUS_FRM_RTX_SHIFT; | |
1127 | tx_info->status.ampdu_len = | |
1128 | (txs-> | |
1129 | status & TX_STATUS_FRM_RTX_MASK) >> | |
1130 | TX_STATUS_FRM_RTX_SHIFT; | |
1131 | ||
c303ecbd AS |
1132 | skb_pull(p, D11_PHY_HDR_LEN); |
1133 | skb_pull(p, D11_TXH_LEN); | |
a9533e7e HP |
1134 | |
1135 | ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, | |
1136 | p); | |
0f0881b0 | 1137 | ack_recd = true; |
a9533e7e HP |
1138 | suc_mpdu++; |
1139 | } | |
1140 | } | |
1141 | /* either retransmit or send bar if ack not recd */ | |
1142 | if (!ack_recd) { | |
1143 | struct ieee80211_tx_rate *txrate = | |
1144 | tx_info->status.rates; | |
1145 | if (retry && (txrate[0].count < (int)retry_limit)) { | |
1146 | ini->txretry[index]++; | |
1147 | ini->tx_in_transit--; | |
1148 | /* Use high prededence for retransmit to give some punch */ | |
1149 | /* wlc_txq_enq(wlc, scb, p, WLC_PRIO_TO_PREC(tid)); */ | |
1150 | wlc_txq_enq(wlc, scb, p, | |
1151 | WLC_PRIO_TO_HI_PREC(tid)); | |
1152 | } else { | |
1153 | /* Retry timeout */ | |
1154 | ini->tx_in_transit--; | |
1155 | ieee80211_tx_info_clear_status(tx_info); | |
1156 | tx_info->flags |= | |
1157 | IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
c303ecbd AS |
1158 | skb_pull(p, D11_PHY_HDR_LEN); |
1159 | skb_pull(p, D11_TXH_LEN); | |
f4528696 JP |
1160 | WL_ERROR("%s: BA Timeout, seq %d, in_transit %d\n", |
1161 | SHORTNAME, seq, ini->tx_in_transit); | |
a9533e7e HP |
1162 | ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, |
1163 | p); | |
1164 | } | |
1165 | } | |
1166 | tot_mpdu++; | |
1167 | ||
1168 | /* break out if last packet of ampdu */ | |
1169 | if (((mcl & TXC_AMPDU_MASK) >> TXC_AMPDU_SHIFT) == | |
1170 | TXC_AMPDU_LAST) | |
1171 | break; | |
1172 | ||
1173 | p = GETNEXTTXP(wlc, queue); | |
1174 | if (p == NULL) { | |
1175 | ASSERT(p); | |
1176 | break; | |
1177 | } | |
1178 | } | |
1179 | wlc_send_q(wlc, wlc->active_queue); | |
1180 | ||
1181 | /* update rate state */ | |
1182 | if (WLANTSEL_ENAB(wlc)) | |
1183 | antselid = wlc_antsel_antsel2id(wlc->asi, mimoantsel); | |
1184 | ||
1185 | wlc_txfifo_complete(wlc, queue, ampdu->txpkt_weight); | |
1186 | } | |
1187 | ||
1188 | static void | |
1f2fd453 | 1189 | ampdu_cleanup_tid_ini(struct ampdu_info *ampdu, scb_ampdu_t *scb_ampdu, u8 tid, |
a9533e7e HP |
1190 | bool force) |
1191 | { | |
1192 | scb_ampdu_tid_ini_t *ini; | |
ca8c1e59 JC |
1193 | ini = SCB_AMPDU_INI(scb_ampdu, tid); |
1194 | if (!ini) | |
a9533e7e HP |
1195 | return; |
1196 | ||
f4528696 JP |
1197 | WL_AMPDU_CTL("wl%d: ampdu_cleanup_tid_ini: tid %d\n", |
1198 | ampdu->wlc->pub->unit, tid); | |
a9533e7e HP |
1199 | |
1200 | if (ini->tx_in_transit && !force) | |
1201 | return; | |
1202 | ||
1203 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, ini->scb); | |
1204 | ASSERT(ini == &scb_ampdu->ini[ini->tid]); | |
1205 | ||
1206 | /* free all buffered tx packets */ | |
0f0881b0 | 1207 | pktq_pflush(ampdu->wlc->osh, &scb_ampdu->txq, ini->tid, true, NULL, 0); |
a9533e7e HP |
1208 | } |
1209 | ||
1210 | /* initialize the initiator code for tid */ | |
1f2fd453 | 1211 | static scb_ampdu_tid_ini_t *wlc_ampdu_init_tid_ini(struct ampdu_info *ampdu, |
7cc4a4c0 | 1212 | scb_ampdu_t *scb_ampdu, |
41feb5ed | 1213 | u8 tid, bool override) |
a9533e7e HP |
1214 | { |
1215 | scb_ampdu_tid_ini_t *ini; | |
1216 | ||
1217 | ASSERT(scb_ampdu); | |
1218 | ASSERT(scb_ampdu->scb); | |
1219 | ASSERT(SCB_AMPDU(scb_ampdu->scb)); | |
1220 | ASSERT(tid < AMPDU_MAX_SCB_TID); | |
1221 | ||
1222 | /* check for per-tid control of ampdu */ | |
1223 | if (!ampdu->ini_enable[tid]) { | |
f4528696 | 1224 | WL_ERROR("%s: Rejecting tid %d\n", __func__, tid); |
a9533e7e HP |
1225 | return NULL; |
1226 | } | |
1227 | ||
1228 | ini = SCB_AMPDU_INI(scb_ampdu, tid); | |
1229 | ini->tid = tid; | |
1230 | ini->scb = scb_ampdu->scb; | |
1231 | ini->magic = INI_MAGIC; | |
1232 | WLCNTINCR(ampdu->cnt->txaddbareq); | |
1233 | ||
1234 | return ini; | |
1235 | } | |
1236 | ||
1f2fd453 | 1237 | int wlc_ampdu_set(struct ampdu_info *ampdu, bool on) |
a9533e7e | 1238 | { |
c6a9e1fc | 1239 | struct wlc_info *wlc = ampdu->wlc; |
a9533e7e | 1240 | |
0965ae88 | 1241 | wlc->pub->_ampdu = false; |
a9533e7e HP |
1242 | |
1243 | if (on) { | |
1244 | if (!N_ENAB(wlc->pub)) { | |
f4528696 JP |
1245 | WL_AMPDU_ERR("wl%d: driver not nmode enabled\n", |
1246 | wlc->pub->unit); | |
a9533e7e HP |
1247 | return BCME_UNSUPPORTED; |
1248 | } | |
1249 | if (!wlc_ampdu_cap(ampdu)) { | |
f4528696 JP |
1250 | WL_AMPDU_ERR("wl%d: device not ampdu capable\n", |
1251 | wlc->pub->unit); | |
a9533e7e HP |
1252 | return BCME_UNSUPPORTED; |
1253 | } | |
1254 | wlc->pub->_ampdu = on; | |
1255 | } | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
1f2fd453 | 1260 | bool wlc_ampdu_cap(struct ampdu_info *ampdu) |
a9533e7e HP |
1261 | { |
1262 | if (WLC_PHY_11N_CAP(ampdu->wlc->band)) | |
0f0881b0 | 1263 | return true; |
a9533e7e | 1264 | else |
0965ae88 | 1265 | return false; |
a9533e7e HP |
1266 | } |
1267 | ||
1f2fd453 | 1268 | static void ampdu_update_max_txlen(struct ampdu_info *ampdu, u8 dur) |
a9533e7e | 1269 | { |
66cbd3ab | 1270 | u32 rate, mcs; |
a9533e7e HP |
1271 | |
1272 | for (mcs = 0; mcs < MCS_TABLE_SIZE; mcs++) { | |
1273 | /* rate is in Kbps; dur is in msec ==> len = (rate * dur) / 8 */ | |
1274 | /* 20MHz, No SGI */ | |
0965ae88 | 1275 | rate = MCS_RATE(mcs, false, false); |
a9533e7e HP |
1276 | ampdu->max_txlen[mcs][0][0] = (rate * dur) >> 3; |
1277 | /* 40 MHz, No SGI */ | |
0965ae88 | 1278 | rate = MCS_RATE(mcs, true, false); |
a9533e7e HP |
1279 | ampdu->max_txlen[mcs][1][0] = (rate * dur) >> 3; |
1280 | /* 20MHz, SGI */ | |
0965ae88 | 1281 | rate = MCS_RATE(mcs, false, true); |
a9533e7e HP |
1282 | ampdu->max_txlen[mcs][0][1] = (rate * dur) >> 3; |
1283 | /* 40 MHz, SGI */ | |
0f0881b0 | 1284 | rate = MCS_RATE(mcs, true, true); |
a9533e7e HP |
1285 | ampdu->max_txlen[mcs][1][1] = (rate * dur) >> 3; |
1286 | } | |
1287 | } | |
1288 | ||
41feb5ed | 1289 | u8 BCMFASTPATH |
1f2fd453 | 1290 | wlc_ampdu_null_delim_cnt(struct ampdu_info *ampdu, struct scb *scb, |
a9533e7e HP |
1291 | ratespec_t rspec, int phylen) |
1292 | { | |
1293 | scb_ampdu_t *scb_ampdu; | |
1294 | int bytes, cnt, tmp; | |
41feb5ed | 1295 | u8 tx_density; |
a9533e7e HP |
1296 | |
1297 | ASSERT(scb); | |
1298 | ASSERT(SCB_AMPDU(scb)); | |
1299 | ||
1300 | scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); | |
1301 | ASSERT(scb_ampdu); | |
1302 | ||
1303 | if (scb_ampdu->mpdu_density == 0) | |
1304 | return 0; | |
1305 | ||
1306 | /* RSPEC2RATE is in kbps units ==> ~RSPEC2RATE/2^13 is in bytes/usec | |
1307 | density x is in 2^(x-4) usec | |
1308 | ==> # of bytes needed for req density = rate/2^(17-x) | |
1309 | ==> # of null delimiters = ceil(ceil(rate/2^(17-x)) - phylen)/4) | |
1310 | */ | |
1311 | ||
1312 | tx_density = scb_ampdu->mpdu_density; | |
1313 | ||
1314 | ASSERT(tx_density <= AMPDU_MAX_MPDU_DENSITY); | |
1315 | tmp = 1 << (17 - tx_density); | |
1316 | bytes = CEIL(RSPEC2RATE(rspec), tmp); | |
1317 | ||
1318 | if (bytes > phylen) { | |
1319 | cnt = CEIL(bytes - phylen, AMPDU_DELIMITER_LEN); | |
1320 | ASSERT(cnt <= 255); | |
41feb5ed | 1321 | return (u8) cnt; |
a9533e7e HP |
1322 | } else |
1323 | return 0; | |
1324 | } | |
1325 | ||
c6a9e1fc | 1326 | void wlc_ampdu_macaddr_upd(struct wlc_info *wlc) |
a9533e7e HP |
1327 | { |
1328 | char template[T_RAM_ACCESS_SZ * 2]; | |
1329 | ||
1330 | /* driver needs to write the ta in the template; ta is at offset 16 */ | |
9249ede9 | 1331 | memset(template, 0, sizeof(template)); |
a44d4236 | 1332 | bcopy((char *)wlc->pub->cur_etheraddr, template, ETH_ALEN); |
a9533e7e HP |
1333 | wlc_write_template_ram(wlc, (T_BA_TPL_BASE + 16), (T_RAM_ACCESS_SZ * 2), |
1334 | template); | |
1335 | } | |
1336 | ||
c6a9e1fc | 1337 | bool wlc_aggregatable(struct wlc_info *wlc, u8 tid) |
a9533e7e | 1338 | { |
90ea2296 | 1339 | return wlc->ampdu->ini_enable[tid]; |
a9533e7e HP |
1340 | } |
1341 | ||
1f2fd453 | 1342 | void wlc_ampdu_shm_upd(struct ampdu_info *ampdu) |
a9533e7e | 1343 | { |
c6a9e1fc | 1344 | struct wlc_info *wlc = ampdu->wlc; |
a9533e7e HP |
1345 | |
1346 | /* Extend ucode internal watchdog timer to match larger received frames */ | |
1347 | if ((ampdu->rx_factor & HT_PARAMS_RX_FACTOR_MASK) == | |
1348 | AMPDU_RX_FACTOR_64K) { | |
1349 | wlc_write_shm(wlc, M_MIMO_MAXSYM, MIMO_MAXSYM_MAX); | |
1350 | wlc_write_shm(wlc, M_WATCHDOG_8TU, WATCHDOG_8TU_MAX); | |
1351 | } else { | |
1352 | wlc_write_shm(wlc, M_MIMO_MAXSYM, MIMO_MAXSYM_DEF); | |
1353 | wlc_write_shm(wlc, M_WATCHDOG_8TU, WATCHDOG_8TU_DEF); | |
1354 | } | |
1355 | } |