2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/types.h>
17 #include <linux/module.h>
18 #include <linux/if_ether.h>
19 #include <linux/spinlock.h>
20 #include <linux/skbuff.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/err.h>
24 #include <linux/jiffies.h>
25 #include <net/cfg80211.h>
27 #include <brcmu_utils.h>
28 #include <brcmu_wifi.h>
33 #include "fwil_types.h"
42 * DOC: Firmware Signalling
44 * Firmware can send signals to host and vice versa, which are passed in the
45 * data packets using TLV based header. This signalling layer is on top of the
46 * BDC bus protocol layer.
50 * single definition for firmware-driver flow control tlv's.
52 * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
53 * A length value 0 indicates variable length tlv.
55 #define BRCMF_FWS_TLV_DEFLIST \
56 BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
57 BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
58 BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
59 BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
60 BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
61 BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
62 BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
63 BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
64 BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
65 BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
66 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
67 BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
68 BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
69 BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
70 BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
71 BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
72 BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
75 * enum brcmf_fws_tlv_type - definition of tlv identifiers.
77 #define BRCMF_FWS_TLV_DEF(name, id, len) \
78 BRCMF_FWS_TYPE_ ## name = id,
79 enum brcmf_fws_tlv_type
{
81 BRCMF_FWS_TYPE_INVALID
83 #undef BRCMF_FWS_TLV_DEF
86 * enum brcmf_fws_tlv_len - definition of tlv lengths.
88 #define BRCMF_FWS_TLV_DEF(name, id, len) \
89 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
90 enum brcmf_fws_tlv_len
{
93 #undef BRCMF_FWS_TLV_DEF
97 * brcmf_fws_tlv_names - array of tlv names.
99 #define BRCMF_FWS_TLV_DEF(name, id, len) \
102 enum brcmf_fws_tlv_type id
;
104 } brcmf_fws_tlv_names
[] = {
105 BRCMF_FWS_TLV_DEFLIST
107 #undef BRCMF_FWS_TLV_DEF
110 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
114 for (i
= 0; i
< ARRAY_SIZE(brcmf_fws_tlv_names
); i
++)
115 if (brcmf_fws_tlv_names
[i
].id
== id
)
116 return brcmf_fws_tlv_names
[i
].name
;
121 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
128 * The PKTTAG tlv has additional bytes when firmware-signalling
129 * mode has REUSESEQ flag set.
131 #define BRCMF_FWS_TYPE_SEQ_LEN 2
134 * flags used to enable tlv signalling from firmware.
136 #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
137 #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
138 #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
139 #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
140 #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
141 #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
142 #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
144 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
145 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
147 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
148 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
149 #define BRCMF_FWS_FLOWCONTROL_HIWATER 128
150 #define BRCMF_FWS_FLOWCONTROL_LOWATER 64
152 #define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
153 #define BRCMF_FWS_PSQ_LEN 256
155 #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
156 #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
158 #define BRCMF_FWS_RET_OK_NOSCHEDULE 0
159 #define BRCMF_FWS_RET_OK_SCHEDULE 1
161 #define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3 /* seq reuse */
162 #define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \
163 ((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \
164 (((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT))
165 #define BRCMF_FWS_MODE_GET_REUSESEQ(x) \
166 (((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1)
169 * enum brcmf_fws_skb_state - indicates processing state of skb.
171 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
172 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
173 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
174 * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info.
176 enum brcmf_fws_skb_state
{
177 BRCMF_FWS_SKBSTATE_NEW
,
178 BRCMF_FWS_SKBSTATE_DELAYED
,
179 BRCMF_FWS_SKBSTATE_SUPPRESSED
,
180 BRCMF_FWS_SKBSTATE_TIM
184 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
186 * @bus_flags: 2 bytes reserved for bus specific parameters
187 * @if_flags: holds interface index and packet related flags.
188 * @htod: host to device packet identifier (used in PKTTAG tlv).
189 * @htod_seq: this 16-bit is original seq number for every suppress packet.
190 * @state: transmit state of the packet.
191 * @mac: descriptor related to destination for this packet.
193 * This information is stored in control buffer struct sk_buff::cb, which
194 * provides 48 bytes of storage so this structure should not exceed that.
196 struct brcmf_skbuff_cb
{
201 enum brcmf_fws_skb_state state
;
202 struct brcmf_fws_mac_descriptor
*mac
;
206 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
208 #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
211 * sk_buff control if flags
213 * b[11] - packet sent upon firmware request.
214 * b[10] - packet only contains signalling data.
215 * b[9] - packet is a tx packet.
216 * b[8] - packet used requested credit
217 * b[7] - interface in AP mode.
218 * b[3:0] - interface index.
220 #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
221 #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
222 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
223 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
224 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
225 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
226 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
227 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
228 #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
229 #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
230 #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
231 #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
233 #define brcmf_skb_if_flags_set_field(skb, field, value) \
234 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
235 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
236 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
237 #define brcmf_skb_if_flags_get_field(skb, field) \
238 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
239 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
240 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
243 * sk_buff control packet identifier
245 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
247 * - Generated at the host (e.g. dhd)
248 * - Seen as a generic sequence number by firmware except for the flags field.
250 * Generation : b[31] => generation number for this packet [host->fw]
251 * OR, current generation number [fw->host]
252 * Flags : b[30:27] => command, status flags
253 * FIFO-AC : b[26:24] => AC-FIFO id
254 * h-slot : b[23:8] => hanger-slot
255 * freerun : b[7:0] => A free running counter
257 #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
258 #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
259 #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
260 #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
261 #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
262 #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
263 #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
264 #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
265 #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
266 #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
268 #define brcmf_skb_htod_tag_set_field(skb, field, value) \
269 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
270 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
271 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
272 #define brcmf_skb_htod_tag_get_field(skb, field) \
273 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
274 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
275 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
277 #define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000
278 #define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13
279 #define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000
280 #define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12
281 #define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff
282 #define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0
284 #define brcmf_skb_htod_seq_set_field(skb, field, value) \
285 brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \
286 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
287 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value))
288 #define brcmf_skb_htod_seq_get_field(skb, field) \
289 brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \
290 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
291 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT)
293 #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
294 #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
295 #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
296 #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
297 #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
298 #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
299 #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
300 #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
301 #define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF
302 #define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0
304 #define brcmf_txstatus_get_field(txs, field) \
305 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
306 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
308 /* How long to defer borrowing in jiffies */
309 #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
312 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
314 * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background.
315 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
316 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
317 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
318 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
319 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
320 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
321 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
323 enum brcmf_fws_fifo
{
324 BRCMF_FWS_FIFO_FIRST
,
325 BRCMF_FWS_FIFO_AC_BK
= BRCMF_FWS_FIFO_FIRST
,
326 BRCMF_FWS_FIFO_AC_BE
,
327 BRCMF_FWS_FIFO_AC_VI
,
328 BRCMF_FWS_FIFO_AC_VO
,
335 * enum brcmf_fws_txstatus - txstatus flag values.
337 * @BRCMF_FWS_TXSTATUS_DISCARD:
338 * host is free to discard the packet.
339 * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
340 * 802.11 core suppressed the packet.
341 * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
342 * firmware suppress the packet as device is already in PS mode.
343 * @BRCMF_FWS_TXSTATUS_FW_TOSSED:
344 * firmware tossed the packet.
345 * @BRCMF_FWS_TXSTATUS_HOST_TOSSED:
346 * host tossed the packet.
348 enum brcmf_fws_txstatus
{
349 BRCMF_FWS_TXSTATUS_DISCARD
,
350 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
,
351 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
,
352 BRCMF_FWS_TXSTATUS_FW_TOSSED
,
353 BRCMF_FWS_TXSTATUS_HOST_TOSSED
356 enum brcmf_fws_fcmode
{
357 BRCMF_FWS_FCMODE_NONE
,
358 BRCMF_FWS_FCMODE_IMPLIED_CREDIT
,
359 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
362 enum brcmf_fws_mac_desc_state
{
363 BRCMF_FWS_STATE_OPEN
= 1,
364 BRCMF_FWS_STATE_CLOSE
368 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
370 * @occupied: slot is in use.
371 * @mac_handle: handle for mac entry determined by firmware.
372 * @interface_id: interface index.
373 * @state: current state.
374 * @suppressed: mac entry is suppressed.
375 * @generation: generation bit.
376 * @ac_bitmap: ac queue bitmap.
377 * @requested_credit: credits requested by firmware.
378 * @ea: ethernet address.
379 * @seq: per-node free-running sequence.
380 * @psq: power-save queue.
381 * @transit_count: packet in transit to firmware.
383 struct brcmf_fws_mac_descriptor
{
395 u8 seq
[BRCMF_FWS_FIFO_COUNT
];
398 int suppr_transit_count
;
399 bool send_tim_signal
;
400 u8 traffic_pending_bmp
;
401 u8 traffic_lastreported_bmp
;
404 #define BRCMF_FWS_HANGER_MAXITEMS 1024
407 * enum brcmf_fws_hanger_item_state - state of hanger item.
409 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
410 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
411 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
413 enum brcmf_fws_hanger_item_state
{
414 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
415 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
416 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
421 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
423 * @state: entry is either free or occupied.
424 * @pkt: packet itself.
426 struct brcmf_fws_hanger_item
{
427 enum brcmf_fws_hanger_item_state state
;
432 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
434 * @pushed: packets pushed to await txstatus.
435 * @popped: packets popped upon handling txstatus.
436 * @failed_to_push: packets that could not be pushed.
437 * @failed_to_pop: packets that could not be popped.
438 * @failed_slotfind: packets for which failed to find an entry.
439 * @slot_pos: last returned item index for a free entry.
440 * @items: array of hanger items.
442 struct brcmf_fws_hanger
{
449 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
452 struct brcmf_fws_macdesc_table
{
453 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
454 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
455 struct brcmf_fws_mac_descriptor other
;
458 struct brcmf_fws_stats
{
459 u32 tlv_parse_failed
;
460 u32 tlv_invalid_type
;
465 u32 requested_sent
[5];
467 u32 mac_update_failed
;
468 u32 mac_ps_update_failed
;
469 u32 if_update_failed
;
470 u32 packet_request_failed
;
471 u32 credit_request_failed
;
472 u32 rollback_success
;
474 u32 delayq_full_error
;
475 u32 supprq_full_error
;
486 struct brcmf_fws_info
{
487 struct brcmf_pub
*drvr
;
490 struct brcmf_fws_stats stats
;
491 struct brcmf_fws_hanger hanger
;
492 enum brcmf_fws_fcmode fcmode
;
494 bool bcmc_credit_check
;
495 struct brcmf_fws_macdesc_table desc
;
496 struct workqueue_struct
*fws_wq
;
497 struct work_struct fws_dequeue_work
;
498 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
499 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
500 int credits_borrowed
[BRCMF_FWS_FIFO_AC_VO
+ 1];
501 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
504 unsigned long borrow_defer_timestamp
;
505 bool bus_flow_blocked
;
506 bool creditmap_received
;
512 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
514 static const int brcmf_fws_prio2fifo
[] = {
515 BRCMF_FWS_FIFO_AC_BE
,
516 BRCMF_FWS_FIFO_AC_BK
,
517 BRCMF_FWS_FIFO_AC_BK
,
518 BRCMF_FWS_FIFO_AC_BE
,
519 BRCMF_FWS_FIFO_AC_VI
,
520 BRCMF_FWS_FIFO_AC_VI
,
521 BRCMF_FWS_FIFO_AC_VO
,
525 #define BRCMF_FWS_TLV_DEF(name, id, len) \
526 case BRCMF_FWS_TYPE_ ## name: \
530 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
532 * @fws: firmware-signalling information.
533 * @id: identifier of the TLV.
535 * Return: the specified length for the given TLV; Otherwise -EINVAL.
537 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
538 enum brcmf_fws_tlv_type id
)
541 BRCMF_FWS_TLV_DEFLIST
543 fws
->stats
.tlv_invalid_type
++;
548 #undef BRCMF_FWS_TLV_DEF
550 static void brcmf_fws_lock(struct brcmf_fws_info
*fws
)
551 __acquires(&fws
->spinlock
)
553 spin_lock_irqsave(&fws
->spinlock
, fws
->flags
);
556 static void brcmf_fws_unlock(struct brcmf_fws_info
*fws
)
557 __releases(&fws
->spinlock
)
559 spin_unlock_irqrestore(&fws
->spinlock
, fws
->flags
);
562 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
564 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
565 return ifidx
== *(int *)arg
;
568 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
571 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
576 matchfn
= brcmf_fws_ifidx_match
;
577 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
578 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
580 brcmu_pkt_buf_free_skb(skb
);
581 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
586 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
590 memset(hanger
, 0, sizeof(*hanger
));
591 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
592 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
595 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
599 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
601 while (i
!= h
->slot_pos
) {
602 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
607 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
610 brcmf_err("all slots occupied\n");
611 h
->failed_slotfind
++;
612 i
= BRCMF_FWS_HANGER_MAXITEMS
;
617 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
618 struct sk_buff
*pkt
, u32 slot_id
)
620 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
623 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
624 brcmf_err("slot is not free\n");
629 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
630 h
->items
[slot_id
].pkt
= pkt
;
635 static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
636 u32 slot_id
, struct sk_buff
**pktout
,
639 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
642 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
643 brcmf_err("entry not in use\n");
648 *pktout
= h
->items
[slot_id
].pkt
;
650 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
651 h
->items
[slot_id
].pkt
= NULL
;
657 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
660 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
663 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
664 brcmf_err("entry not in use\n");
668 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
672 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
673 bool (*fn
)(struct sk_buff
*, void *),
676 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
679 enum brcmf_fws_hanger_item_state s
;
681 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
682 s
= h
->items
[i
].state
;
683 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
684 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
685 skb
= h
->items
[i
].pkt
;
686 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
687 /* suppress packets freed from psq */
688 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
689 brcmu_pkt_buf_free_skb(skb
);
691 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
697 static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info
*fws
,
698 struct brcmf_fws_mac_descriptor
*desc
)
700 if (desc
== &fws
->desc
.other
)
701 strlcpy(desc
->name
, "MAC-OTHER", sizeof(desc
->name
));
702 else if (desc
->mac_handle
)
703 scnprintf(desc
->name
, sizeof(desc
->name
), "MAC-%d:%d",
704 desc
->mac_handle
, desc
->interface_id
);
706 scnprintf(desc
->name
, sizeof(desc
->name
), "MACIF:%d",
710 static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor
*desc
,
714 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
716 desc
->state
= BRCMF_FWS_STATE_OPEN
;
717 desc
->requested_credit
= 0;
718 desc
->requested_packet
= 0;
719 /* depending on use may need ifp->bsscfgidx instead */
720 desc
->interface_id
= ifidx
;
721 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
723 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
727 void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor
*desc
)
730 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
732 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
733 desc
->requested_credit
= 0;
734 desc
->requested_packet
= 0;
737 static struct brcmf_fws_mac_descriptor
*
738 brcmf_fws_macdesc_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
740 struct brcmf_fws_mac_descriptor
*entry
;
744 return ERR_PTR(-EINVAL
);
746 entry
= &fws
->desc
.nodes
[0];
747 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
748 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
753 return ERR_PTR(-ENOENT
);
756 static struct brcmf_fws_mac_descriptor
*
757 brcmf_fws_macdesc_find(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
, u8
*da
)
759 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
762 multicast
= is_multicast_ether_addr(da
);
764 /* Multicast destination, STA and P2P clients get the interface entry.
765 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
766 * have their own entry.
768 if (multicast
&& ifp
->fws_desc
) {
769 entry
= ifp
->fws_desc
;
773 entry
= brcmf_fws_macdesc_lookup(fws
, da
);
775 entry
= ifp
->fws_desc
;
781 static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info
*fws
,
782 struct brcmf_fws_mac_descriptor
*entry
,
785 struct brcmf_fws_mac_descriptor
*if_entry
;
788 /* for unique destination entries the related interface
791 if (entry
->mac_handle
) {
792 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
793 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
796 /* an entry is closed when the state is closed and
797 * the firmware did not request anything.
799 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
800 !entry
->requested_credit
&& !entry
->requested_packet
;
802 /* Or firmware does not allow traffic for given fifo */
803 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
806 static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info
*fws
,
807 struct brcmf_fws_mac_descriptor
*entry
,
810 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
811 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
812 entry
->occupied
= !!(entry
->psq
.len
);
816 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
817 bool (*fn
)(struct sk_buff
*, void *),
820 struct brcmf_fws_hanger_item
*hi
;
826 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
828 brcmf_dbg(TRACE
, "no txq to clean up\n");
832 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
833 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
835 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
836 hi
= &fws
->hanger
.items
[hslot
];
837 WARN_ON(skb
!= hi
->pkt
);
838 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
839 brcmu_pkt_buf_free_skb(skb
);
840 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
845 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
848 struct brcmf_fws_mac_descriptor
*table
;
849 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
855 matchfn
= brcmf_fws_ifidx_match
;
857 /* cleanup individual nodes */
858 table
= &fws
->desc
.nodes
[0];
859 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
860 brcmf_fws_macdesc_cleanup(fws
, &table
[i
], ifidx
);
862 brcmf_fws_macdesc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
863 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
864 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
867 static u8
brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
869 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
873 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
874 __le16 pktseq
= cpu_to_le16(brcmf_skbcb(skb
)->htod_seq
);
876 brcmf_dbg(TRACE
, "enter: %s, idx=%d hslot=%d htod %X seq %X\n",
877 entry
->name
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
878 (le32_to_cpu(pkttag
) >> 8) & 0xffff,
879 brcmf_skbcb(skb
)->htod
, brcmf_skbcb(skb
)->htod_seq
);
880 if (entry
->send_tim_signal
)
881 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
882 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws
->mode
))
883 data_offset
+= BRCMF_FWS_TYPE_SEQ_LEN
;
884 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
885 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
886 fillers
= round_up(data_offset
, 4) - data_offset
;
887 data_offset
+= fillers
;
889 skb_push(skb
, data_offset
);
892 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
893 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
894 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
895 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws
->mode
)) {
896 wlh
[1] += BRCMF_FWS_TYPE_SEQ_LEN
;
897 memcpy(&wlh
[2 + BRCMF_FWS_TYPE_PKTTAG_LEN
], &pktseq
,
902 if (entry
->send_tim_signal
) {
903 entry
->send_tim_signal
= 0;
904 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
905 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
906 wlh
[2] = entry
->mac_handle
;
907 wlh
[3] = entry
->traffic_pending_bmp
;
908 brcmf_dbg(TRACE
, "adding TIM info: handle %d bmp 0x%X\n",
909 entry
->mac_handle
, entry
->traffic_pending_bmp
);
910 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
911 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
914 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
916 return (u8
)(data_offset
>> 2);
919 static bool brcmf_fws_tim_update(struct brcmf_fws_info
*fws
,
920 struct brcmf_fws_mac_descriptor
*entry
,
921 int fifo
, bool send_immediately
)
924 struct brcmf_skbuff_cb
*skcb
;
930 /* check delayedQ and suppressQ in one call using bitmap */
931 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (fifo
* 2)) == 0)
932 entry
->traffic_pending_bmp
&= ~NBITVAL(fifo
);
934 entry
->traffic_pending_bmp
|= NBITVAL(fifo
);
936 entry
->send_tim_signal
= false;
937 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
938 entry
->send_tim_signal
= true;
939 if (send_immediately
&& entry
->send_tim_signal
&&
940 entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
941 /* create a dummy packet and sent that. The traffic */
942 /* bitmap info will automatically be attached to that packet */
943 len
= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2 +
944 BRCMF_FWS_TYPE_SEQ_LEN
+
945 BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2 +
946 4 + fws
->drvr
->hdrlen
;
947 skb
= brcmu_pkt_buf_get_skb(len
);
951 skcb
= brcmf_skbcb(skb
);
953 skcb
->state
= BRCMF_FWS_SKBSTATE_TIM
;
956 data_offset
= brcmf_fws_hdrpush(fws
, skb
);
957 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
958 brcmf_fws_unlock(fws
);
959 err
= brcmf_proto_txdata(fws
->drvr
, ifidx
, data_offset
, skb
);
962 brcmu_pkt_buf_free_skb(skb
);
969 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
972 struct brcmf_if
*ifp
= brcmf_get_ifp(fws
->drvr
, if_id
);
977 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
978 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
979 brcmf_txflowblock_if(ifp
,
980 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
981 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
982 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
) {
983 fws
->stats
.fws_flow_block
++;
984 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
989 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
991 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
996 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
998 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
1003 mac_handle
= *data
++;
1007 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
1008 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
1009 if (entry
->occupied
) {
1010 brcmf_dbg(TRACE
, "deleting %s mac %pM\n",
1012 brcmf_fws_lock(fws
);
1013 brcmf_fws_macdesc_cleanup(fws
, entry
, -1);
1014 brcmf_fws_macdesc_deinit(entry
);
1015 brcmf_fws_unlock(fws
);
1017 fws
->stats
.mac_update_failed
++;
1021 existing
= brcmf_fws_macdesc_lookup(fws
, addr
);
1022 if (IS_ERR(existing
)) {
1023 if (!entry
->occupied
) {
1024 brcmf_fws_lock(fws
);
1025 entry
->mac_handle
= mac_handle
;
1026 brcmf_fws_macdesc_init(entry
, addr
, ifidx
);
1027 brcmf_fws_macdesc_set_name(fws
, entry
);
1028 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1030 brcmf_fws_unlock(fws
);
1031 brcmf_dbg(TRACE
, "add %s mac %pM\n", entry
->name
, addr
);
1033 fws
->stats
.mac_update_failed
++;
1036 if (entry
!= existing
) {
1037 brcmf_dbg(TRACE
, "copy mac %s\n", existing
->name
);
1038 brcmf_fws_lock(fws
);
1039 memcpy(entry
, existing
,
1040 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
1041 entry
->mac_handle
= mac_handle
;
1042 brcmf_fws_macdesc_deinit(existing
);
1043 brcmf_fws_macdesc_set_name(fws
, entry
);
1044 brcmf_fws_unlock(fws
);
1045 brcmf_dbg(TRACE
, "relocate %s mac %pM\n", entry
->name
,
1048 brcmf_dbg(TRACE
, "use existing\n");
1049 WARN_ON(entry
->mac_handle
!= mac_handle
);
1050 /* TODO: what should we do here: continue, reinit, .. */
1056 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
1059 struct brcmf_fws_mac_descriptor
*entry
;
1063 mac_handle
= data
[0];
1064 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
1065 if (!entry
->occupied
) {
1066 fws
->stats
.mac_ps_update_failed
++;
1069 brcmf_fws_lock(fws
);
1070 /* a state update should wipe old credits */
1071 entry
->requested_credit
= 0;
1072 entry
->requested_packet
= 0;
1073 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
1074 entry
->state
= BRCMF_FWS_STATE_OPEN
;
1075 ret
= BRCMF_FWS_RET_OK_SCHEDULE
;
1077 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
1078 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BK
, false);
1079 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BE
, false);
1080 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VI
, false);
1081 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VO
, true);
1082 ret
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1084 brcmf_fws_unlock(fws
);
1088 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
1091 struct brcmf_fws_mac_descriptor
*entry
;
1097 if (ifidx
>= BRCMF_MAX_IFS
) {
1102 entry
= &fws
->desc
.iface
[ifidx
];
1103 if (!entry
->occupied
) {
1108 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
1110 brcmf_fws_lock(fws
);
1112 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1113 entry
->state
= BRCMF_FWS_STATE_OPEN
;
1114 ret
= BRCMF_FWS_RET_OK_SCHEDULE
;
1116 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1117 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
1118 ret
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1122 brcmf_fws_unlock(fws
);
1125 brcmf_fws_unlock(fws
);
1129 fws
->stats
.if_update_failed
++;
1133 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
1136 struct brcmf_fws_mac_descriptor
*entry
;
1138 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
1139 if (!entry
->occupied
) {
1140 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1141 fws
->stats
.credit_request_failed
++;
1143 fws
->stats
.packet_request_failed
++;
1147 brcmf_dbg(TRACE
, "%s (%d): %s cnt %d bmp %d\n",
1148 brcmf_fws_get_tlv_name(type
), type
, entry
->name
,
1150 brcmf_fws_lock(fws
);
1151 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1152 entry
->requested_credit
= data
[0];
1154 entry
->requested_packet
= data
[0];
1156 entry
->ac_bitmap
= data
[2];
1157 brcmf_fws_unlock(fws
);
1158 return BRCMF_FWS_RET_OK_SCHEDULE
;
1162 brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor
*entry
,
1163 struct sk_buff
*skb
)
1165 if (entry
->requested_credit
> 0) {
1166 entry
->requested_credit
--;
1167 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1168 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 1);
1169 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1170 brcmf_err("requested credit set while mac not closed!\n");
1171 } else if (entry
->requested_packet
> 0) {
1172 entry
->requested_packet
--;
1173 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1174 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1175 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1176 brcmf_err("requested packet set while mac not closed!\n");
1178 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 0);
1179 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1183 static void brcmf_fws_macdesc_return_req_credit(struct sk_buff
*skb
)
1185 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1187 if ((brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) &&
1188 (entry
->state
== BRCMF_FWS_STATE_CLOSE
))
1189 entry
->requested_credit
++;
1192 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1193 u8 fifo
, u8 credits
)
1202 fws
->fifo_credit_map
|= 1 << fifo
;
1204 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1205 (fws
->credits_borrowed
[0])) {
1206 for (lender_ac
= BRCMF_FWS_FIFO_AC_VO
; lender_ac
>= 0;
1208 borrowed
= &fws
->credits_borrowed
[lender_ac
];
1210 fws
->fifo_credit_map
|= (1 << lender_ac
);
1211 fifo_credit
= &fws
->fifo_credit
[lender_ac
];
1212 if (*borrowed
>= credits
) {
1213 *borrowed
-= credits
;
1214 *fifo_credit
+= credits
;
1217 credits
-= *borrowed
;
1218 *fifo_credit
+= *borrowed
;
1225 fws
->fifo_credit
[fifo
] += credits
;
1228 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1230 /* only schedule dequeue when there are credits for delayed traffic */
1231 if ((fws
->fifo_credit_map
& fws
->fifo_delay_map
) ||
1232 (!brcmf_fws_fc_active(fws
) && fws
->fifo_delay_map
))
1233 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1236 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1237 enum brcmf_fws_skb_state state
, int fifo
,
1240 int prec
= 2 * fifo
;
1241 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1242 struct brcmf_fws_mac_descriptor
*entry
;
1244 struct sk_buff_head
*queue
;
1245 struct sk_buff
*p_head
;
1246 struct sk_buff
*p_tail
;
1250 entry
= brcmf_skbcb(p
)->mac
;
1251 if (entry
== NULL
) {
1252 brcmf_err("no mac descriptor found for skb %p\n", p
);
1256 brcmf_dbg(DATA
, "enter: fifo %d skb %p\n", fifo
, p
);
1257 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1259 qfull_stat
= &fws
->stats
.supprq_full_error
;
1261 /* Fix out of order delivery of frames. Dont assume frame */
1262 /* can be inserted at the end, but look for correct position */
1264 if (pktq_full(pq
) || pktq_pfull(pq
, prec
)) {
1268 queue
= &pq
->q
[prec
].skblist
;
1270 p_head
= skb_peek(queue
);
1271 p_tail
= skb_peek_tail(queue
);
1272 fr_new
= brcmf_skb_htod_tag_get_field(p
, FREERUN
);
1274 while (p_head
!= p_tail
) {
1275 fr_compare
= brcmf_skb_htod_tag_get_field(p_tail
,
1277 /* be sure to handle wrap of 256 */
1278 if (((fr_new
> fr_compare
) &&
1279 ((fr_new
- fr_compare
) < 128)) ||
1280 ((fr_new
< fr_compare
) &&
1281 ((fr_compare
- fr_new
) > 128)))
1283 p_tail
= skb_queue_prev(queue
, p_tail
);
1285 /* Position found. Determine what to do */
1286 if (p_tail
== NULL
) {
1288 __skb_queue_tail(queue
, p
);
1290 fr_compare
= brcmf_skb_htod_tag_get_field(p_tail
,
1292 if (((fr_new
> fr_compare
) &&
1293 ((fr_new
- fr_compare
) < 128)) ||
1294 ((fr_new
< fr_compare
) &&
1295 ((fr_compare
- fr_new
) > 128))) {
1297 __skb_queue_after(queue
, p_tail
, p
);
1300 __skb_insert(p
, p_tail
->prev
, p_tail
, queue
);
1304 /* Complete the counters and statistics */
1306 if (pq
->hi_prec
< prec
)
1307 pq
->hi_prec
= (u8
) prec
;
1308 } else if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1313 /* increment total enqueued packet count */
1314 fws
->fifo_delay_map
|= 1 << fifo
;
1315 fws
->fifo_enqpkt
[fifo
]++;
1317 /* update the sk_buff state */
1318 brcmf_skbcb(p
)->state
= state
;
1321 * A packet has been pushed so update traffic
1322 * availability bitmap, if applicable
1324 brcmf_fws_tim_update(fws
, entry
, fifo
, true);
1325 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1326 brcmf_skb_if_flags_get_field(p
, INDEX
));
1330 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1332 struct brcmf_fws_mac_descriptor
*table
;
1333 struct brcmf_fws_mac_descriptor
*entry
;
1341 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1342 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1343 node_pos
= fws
->deq_node_pos
[fifo
];
1345 for (i
= 0; i
< num_nodes
; i
++) {
1346 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1347 if (!entry
->occupied
||
1348 brcmf_fws_macdesc_closed(fws
, entry
, fifo
))
1351 if (entry
->suppressed
)
1355 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1357 if (entry
->suppressed
) {
1358 if (entry
->suppr_transit_count
)
1360 entry
->suppressed
= false;
1361 p
= brcmu_pktq_mdeq(&entry
->psq
,
1362 1 << (fifo
* 2), &prec_out
);
1368 brcmf_fws_macdesc_use_req_credit(entry
, p
);
1370 /* move dequeue position to ensure fair round-robin */
1371 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1372 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1373 brcmf_skb_if_flags_get_field(p
,
1377 * A packet has been picked up, update traffic
1378 * availability bitmap, if applicable
1380 brcmf_fws_tim_update(fws
, entry
, fifo
, false);
1383 * decrement total enqueued fifo packets and
1384 * clear delay bitmap if done.
1386 fws
->fifo_enqpkt
[fifo
]--;
1387 if (fws
->fifo_enqpkt
[fifo
] == 0)
1388 fws
->fifo_delay_map
&= ~(1 << fifo
);
1393 brcmf_dbg(DATA
, "exit: fifo %d skb %p\n", fifo
, p
);
1397 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1398 struct sk_buff
*skb
,
1399 u32 genbit
, u16 seq
)
1401 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1405 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1407 /* this packet was suppressed */
1408 if (!entry
->suppressed
) {
1409 entry
->suppressed
= true;
1410 entry
->suppr_transit_count
= entry
->transit_count
;
1411 brcmf_dbg(DATA
, "suppress %s: transit %d\n",
1412 entry
->name
, entry
->transit_count
);
1415 entry
->generation
= genbit
;
1417 brcmf_skb_htod_tag_set_field(skb
, GENERATION
, genbit
);
1418 brcmf_skbcb(skb
)->htod_seq
= seq
;
1419 if (brcmf_skb_htod_seq_get_field(skb
, FROMFW
)) {
1420 brcmf_skb_htod_seq_set_field(skb
, FROMDRV
, 1);
1421 brcmf_skb_htod_seq_set_field(skb
, FROMFW
, 0);
1423 brcmf_skb_htod_seq_set_field(skb
, FROMDRV
, 0);
1425 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
, skb
);
1428 /* suppress q is full drop this packet */
1429 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
, true);
1431 /* Mark suppressed to avoid a double free during wlfc cleanup */
1432 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
);
1439 brcmf_fws_txs_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1440 u32 genbit
, u16 seq
)
1444 bool remove_from_hanger
= true;
1445 struct sk_buff
*skb
;
1446 struct brcmf_skbuff_cb
*skcb
;
1447 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1448 struct brcmf_if
*ifp
;
1450 brcmf_dbg(DATA
, "flags %d\n", flags
);
1452 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1453 fws
->stats
.txs_discard
++;
1454 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1455 fws
->stats
.txs_supp_core
++;
1456 remove_from_hanger
= false;
1457 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1458 fws
->stats
.txs_supp_ps
++;
1459 remove_from_hanger
= false;
1460 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1461 fws
->stats
.txs_tossed
++;
1462 else if (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)
1463 fws
->stats
.txs_host_tossed
++;
1465 brcmf_err("unexpected txstatus\n");
1467 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1468 remove_from_hanger
);
1470 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1474 skcb
= brcmf_skbcb(skb
);
1476 if (WARN_ON(!entry
)) {
1477 brcmu_pkt_buf_free_skb(skb
);
1480 entry
->transit_count
--;
1481 if (entry
->suppressed
&& entry
->suppr_transit_count
)
1482 entry
->suppr_transit_count
--;
1484 brcmf_dbg(DATA
, "%s flags %d htod %X seq %X\n", entry
->name
, flags
,
1487 /* pick up the implicit credit from this packet */
1488 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1489 if ((fws
->fcmode
== BRCMF_FWS_FCMODE_IMPLIED_CREDIT
) ||
1490 (brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) ||
1491 (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)) {
1492 brcmf_fws_return_credits(fws
, fifo
, 1);
1493 brcmf_fws_schedule_deq(fws
);
1495 brcmf_fws_macdesc_return_req_credit(skb
);
1497 ret
= brcmf_proto_hdrpull(fws
->drvr
, false, skb
, &ifp
);
1499 brcmu_pkt_buf_free_skb(skb
);
1502 if (!remove_from_hanger
)
1503 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
,
1505 if (remove_from_hanger
|| ret
)
1506 brcmf_txfinalize(ifp
, skb
, true);
1511 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1516 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1517 brcmf_dbg(INFO
, "ignored\n");
1518 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1521 brcmf_dbg(DATA
, "enter: data %pM\n", data
);
1522 brcmf_fws_lock(fws
);
1523 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1524 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1526 brcmf_dbg(DATA
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1527 fws
->fifo_delay_map
);
1528 brcmf_fws_unlock(fws
);
1529 return BRCMF_FWS_RET_OK_SCHEDULE
;
1532 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1542 fws
->stats
.txs_indicate
++;
1543 memcpy(&status_le
, data
, sizeof(status_le
));
1544 status
= le32_to_cpu(status_le
);
1545 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1546 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1547 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1548 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws
->mode
)) {
1549 memcpy(&seq_le
, &data
[BRCMF_FWS_TYPE_PKTTAG_LEN
],
1551 seq
= le16_to_cpu(seq_le
);
1556 brcmf_fws_lock(fws
);
1557 brcmf_fws_txs_process(fws
, flags
, hslot
, genbit
, seq
);
1558 brcmf_fws_unlock(fws
);
1559 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1562 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1566 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1567 brcmf_dbg(CTL
, "received: seq %d, timestamp %d\n", data
[1],
1568 le32_to_cpu(timestamp
));
1572 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1573 const struct brcmf_event_msg
*e
,
1576 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1580 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1581 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1584 if (fws
->creditmap_received
)
1587 fws
->creditmap_received
= true;
1589 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1590 brcmf_fws_lock(fws
);
1591 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1593 fws
->fifo_credit_map
|= 1 << i
;
1595 fws
->fifo_credit_map
&= ~(1 << i
);
1596 fws
->fifo_credit
[i
] = *credits
++;
1598 brcmf_fws_schedule_deq(fws
);
1599 brcmf_fws_unlock(fws
);
1603 static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if
*ifp
,
1604 const struct brcmf_event_msg
*e
,
1607 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1610 brcmf_fws_lock(fws
);
1611 fws
->bcmc_credit_check
= true;
1612 brcmf_fws_unlock(fws
);
1617 void brcmf_fws_hdrpull(struct brcmf_if
*ifp
, s16 siglen
, struct sk_buff
*skb
)
1619 struct brcmf_skb_reorder_data
*rd
;
1620 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1629 brcmf_dbg(HDRS
, "enter: ifidx %d, skblen %u, sig %d\n",
1630 ifp
->ifidx
, skb
->len
, siglen
);
1632 WARN_ON(siglen
> skb
->len
);
1636 /* if flow control disabled, skip to packet data and leave */
1637 if ((!fws
) || (!fws
->fw_signals
)) {
1638 skb_pull(skb
, siglen
);
1642 fws
->stats
.header_pulls
++;
1644 signal_data
= skb
->data
;
1646 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1647 while (data_len
> 0) {
1648 /* extract tlv info */
1649 type
= signal_data
[0];
1651 /* FILLER type is actually not a TLV, but
1652 * a single byte that can be skipped.
1654 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1659 len
= signal_data
[1];
1660 data
= signal_data
+ 2;
1662 brcmf_dbg(HDRS
, "tlv type=%s (%d), len=%d (%d)\n",
1663 brcmf_fws_get_tlv_name(type
), type
, len
,
1664 brcmf_fws_get_tlv_len(fws
, type
));
1666 /* abort parsing when length invalid */
1667 if (data_len
< len
+ 2)
1670 if (len
< brcmf_fws_get_tlv_len(fws
, type
))
1673 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1675 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1677 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1678 rd
= (struct brcmf_skb_reorder_data
*)skb
->cb
;
1681 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1682 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1683 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1685 case BRCMF_FWS_TYPE_MAC_OPEN
:
1686 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1687 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1689 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1690 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1691 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1694 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1695 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1696 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1698 case BRCMF_FWS_TYPE_TXSTATUS
:
1699 brcmf_fws_txstatus_indicate(fws
, data
);
1701 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1702 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1704 case BRCMF_FWS_TYPE_RSSI
:
1705 brcmf_fws_rssi_indicate(fws
, *data
);
1707 case BRCMF_FWS_TYPE_TRANS_ID
:
1708 brcmf_fws_dbg_seqnum_check(fws
, data
);
1710 case BRCMF_FWS_TYPE_PKTTAG
:
1711 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1713 fws
->stats
.tlv_invalid_type
++;
1716 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1717 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1718 signal_data
+= len
+ 2;
1719 data_len
-= len
+ 2;
1723 fws
->stats
.tlv_parse_failed
++;
1725 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1726 brcmf_fws_schedule_deq(fws
);
1728 /* signalling processing result does
1729 * not affect the actual ethernet packet.
1731 skb_pull(skb
, siglen
);
1733 /* this may be a signal-only packet
1736 fws
->stats
.header_only_pkt
++;
1739 static u8
brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1742 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1743 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1746 if (skcb
->state
!= BRCMF_FWS_SKBSTATE_SUPPRESSED
)
1747 brcmf_skb_htod_tag_set_field(p
, GENERATION
, entry
->generation
);
1748 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1749 if (brcmf_skb_if_flags_get_field(p
, REQUESTED
)) {
1751 * Indicate that this packet is being sent in response to an
1752 * explicit request from the firmware side.
1754 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1756 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1757 return brcmf_fws_hdrpush(fws
, p
);
1760 static void brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
,
1761 struct sk_buff
*skb
, int fifo
)
1763 struct brcmf_fws_mac_descriptor
*entry
;
1764 struct sk_buff
*pktout
;
1768 entry
= brcmf_skbcb(skb
)->mac
;
1769 if (entry
->occupied
) {
1771 if (brcmf_skbcb(skb
)->state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
)
1774 pktout
= brcmu_pktq_penq_head(&entry
->psq
, qidx
, skb
);
1775 if (pktout
== NULL
) {
1776 brcmf_err("%s queue %d full\n", entry
->name
, qidx
);
1780 brcmf_err("%s entry removed\n", entry
->name
);
1785 fws
->stats
.rollback_failed
++;
1786 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1787 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
,
1790 fws
->stats
.rollback_success
++;
1791 brcmf_fws_return_credits(fws
, fifo
, 1);
1792 brcmf_fws_macdesc_return_req_credit(skb
);
1796 static int brcmf_fws_borrow_credit(struct brcmf_fws_info
*fws
)
1800 if (time_after(fws
->borrow_defer_timestamp
, jiffies
)) {
1801 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1805 for (lender_ac
= 0; lender_ac
<= BRCMF_FWS_FIFO_AC_VO
; lender_ac
++) {
1806 if (fws
->fifo_credit
[lender_ac
]) {
1807 fws
->credits_borrowed
[lender_ac
]++;
1808 fws
->fifo_credit
[lender_ac
]--;
1809 if (fws
->fifo_credit
[lender_ac
] == 0)
1810 fws
->fifo_credit_map
&= ~(1 << lender_ac
);
1811 fws
->fifo_credit_map
|= (1 << BRCMF_FWS_FIFO_AC_BE
);
1812 brcmf_dbg(DATA
, "borrow credit from: %d\n", lender_ac
);
1816 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1820 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1821 struct sk_buff
*skb
)
1823 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1824 struct brcmf_fws_mac_descriptor
*entry
;
1831 return PTR_ERR(entry
);
1833 data_offset
= brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1834 entry
->transit_count
++;
1835 if (entry
->suppressed
)
1836 entry
->suppr_transit_count
++;
1837 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
1838 brcmf_fws_unlock(fws
);
1839 rc
= brcmf_proto_txdata(fws
->drvr
, ifidx
, data_offset
, skb
);
1840 brcmf_fws_lock(fws
);
1841 brcmf_dbg(DATA
, "%s flags %X htod %X bus_tx %d\n", entry
->name
,
1842 skcb
->if_flags
, skcb
->htod
, rc
);
1844 entry
->transit_count
--;
1845 if (entry
->suppressed
)
1846 entry
->suppr_transit_count
--;
1847 (void)brcmf_proto_hdrpull(fws
->drvr
, false, skb
, NULL
);
1851 fws
->stats
.pkt2bus
++;
1852 fws
->stats
.send_pkts
[fifo
]++;
1853 if (brcmf_skb_if_flags_get_field(skb
, REQUESTED
))
1854 fws
->stats
.requested_sent
[fifo
]++;
1859 brcmf_fws_rollback_toq(fws
, skb
, fifo
);
1863 static int brcmf_fws_assign_htod(struct brcmf_fws_info
*fws
, struct sk_buff
*p
,
1866 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1871 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1872 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1873 brcmf_skb_htod_tag_set_field(p
, FREERUN
, skcb
->mac
->seq
[fifo
]);
1874 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1875 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1877 skcb
->mac
->seq
[fifo
]++;
1879 fws
->stats
.generic_error
++;
1883 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1885 struct brcmf_pub
*drvr
= ifp
->drvr
;
1886 struct brcmf_fws_info
*fws
= drvr
->fws
;
1887 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1888 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1889 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1890 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1893 brcmf_dbg(DATA
, "tx proto=0x%X\n", ntohs(eh
->h_proto
));
1894 /* determine the priority */
1896 skb
->priority
= cfg80211_classify8021d(skb
, NULL
);
1898 drvr
->tx_multicast
+= !!multicast
;
1900 if (fws
->avoid_queueing
) {
1901 rc
= brcmf_proto_txdata(drvr
, ifp
->ifidx
, 0, skb
);
1903 brcmf_txfinalize(ifp
, skb
, false);
1907 /* set control buffer information */
1909 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1910 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1912 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1914 brcmf_fws_lock(fws
);
1915 if (fifo
!= BRCMF_FWS_FIFO_AC_BE
&& fifo
< BRCMF_FWS_FIFO_BCMC
)
1916 fws
->borrow_defer_timestamp
= jiffies
+
1917 BRCMF_FWS_BORROW_DEFER_PERIOD
;
1919 skcb
->mac
= brcmf_fws_macdesc_find(fws
, ifp
, eh
->h_dest
);
1920 brcmf_dbg(DATA
, "%s mac %pM multi %d fifo %d\n", skcb
->mac
->name
,
1921 eh
->h_dest
, multicast
, fifo
);
1922 if (!brcmf_fws_assign_htod(fws
, skb
, fifo
)) {
1923 brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1924 brcmf_fws_schedule_deq(fws
);
1926 brcmf_err("drop skb: no hanger slot\n");
1927 brcmf_txfinalize(ifp
, skb
, false);
1930 brcmf_fws_unlock(fws
);
1935 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1937 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1939 brcmf_dbg(TRACE
, "enter: bsscfgidx=%d\n", ifp
->bsscfgidx
);
1943 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1946 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1948 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1949 struct brcmf_fws_mac_descriptor
*entry
;
1954 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1955 ifp
->fws_desc
= entry
;
1956 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1957 brcmf_fws_macdesc_set_name(fws
, entry
);
1958 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1960 brcmf_dbg(TRACE
, "added %s\n", entry
->name
);
1963 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1965 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1970 brcmf_fws_lock(ifp
->drvr
->fws
);
1971 ifp
->fws_desc
= NULL
;
1972 brcmf_dbg(TRACE
, "deleting %s\n", entry
->name
);
1973 brcmf_fws_macdesc_deinit(entry
);
1974 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1975 brcmf_fws_unlock(ifp
->drvr
->fws
);
1978 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1980 struct brcmf_fws_info
*fws
;
1981 struct brcmf_pub
*drvr
;
1982 struct sk_buff
*skb
;
1988 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1991 brcmf_fws_lock(fws
);
1992 for (fifo
= BRCMF_FWS_FIFO_BCMC
; fifo
>= 0 && !fws
->bus_flow_blocked
;
1994 if (!brcmf_fws_fc_active(fws
)) {
1995 while ((skb
= brcmf_fws_deq(fws
, fifo
)) != NULL
) {
1996 hslot
= brcmf_skb_htod_tag_get_field(skb
,
1998 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
,
2000 ifidx
= brcmf_skb_if_flags_get_field(skb
,
2002 /* Use proto layer to send data frame */
2003 brcmf_fws_unlock(fws
);
2004 ret
= brcmf_proto_txdata(drvr
, ifidx
, 0, skb
);
2005 brcmf_fws_lock(fws
);
2007 brcmf_txfinalize(brcmf_get_ifp(drvr
,
2010 if (fws
->bus_flow_blocked
)
2015 while ((fws
->fifo_credit
[fifo
]) || ((!fws
->bcmc_credit_check
) &&
2016 (fifo
== BRCMF_FWS_FIFO_BCMC
))) {
2017 skb
= brcmf_fws_deq(fws
, fifo
);
2020 fws
->fifo_credit
[fifo
]--;
2021 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
2023 if (fws
->bus_flow_blocked
)
2026 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
2027 (fws
->fifo_credit
[fifo
] == 0) &&
2028 (!fws
->bus_flow_blocked
)) {
2029 while (brcmf_fws_borrow_credit(fws
) == 0) {
2030 skb
= brcmf_fws_deq(fws
, fifo
);
2032 brcmf_fws_return_credits(fws
, fifo
, 1);
2035 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
2037 if (fws
->bus_flow_blocked
)
2042 brcmf_fws_unlock(fws
);
2046 static int brcmf_debugfs_fws_stats_read(struct seq_file
*seq
, void *data
)
2048 struct brcmf_bus
*bus_if
= dev_get_drvdata(seq
->private);
2049 struct brcmf_fws_stats
*fwstats
= &bus_if
->drvr
->fws
->stats
;
2052 "header_pulls: %u\n"
2053 "header_only_pkt: %u\n"
2054 "tlv_parse_failed: %u\n"
2055 "tlv_invalid_type: %u\n"
2056 "mac_update_fails: %u\n"
2057 "ps_update_fails: %u\n"
2058 "if_update_fails: %u\n"
2060 "generic_error: %u\n"
2061 "rollback_success: %u\n"
2062 "rollback_failed: %u\n"
2065 "txs_indicate: %u\n"
2067 "txs_suppr_core: %u\n"
2068 "txs_suppr_ps: %u\n"
2070 "txs_host_tossed: %u\n"
2071 "bus_flow_block: %u\n"
2072 "fws_flow_block: %u\n"
2073 "send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n"
2074 "requested_sent: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n",
2075 fwstats
->header_pulls
,
2076 fwstats
->header_only_pkt
,
2077 fwstats
->tlv_parse_failed
,
2078 fwstats
->tlv_invalid_type
,
2079 fwstats
->mac_update_failed
,
2080 fwstats
->mac_ps_update_failed
,
2081 fwstats
->if_update_failed
,
2083 fwstats
->generic_error
,
2084 fwstats
->rollback_success
,
2085 fwstats
->rollback_failed
,
2086 fwstats
->delayq_full_error
,
2087 fwstats
->supprq_full_error
,
2088 fwstats
->txs_indicate
,
2089 fwstats
->txs_discard
,
2090 fwstats
->txs_supp_core
,
2091 fwstats
->txs_supp_ps
,
2092 fwstats
->txs_tossed
,
2093 fwstats
->txs_host_tossed
,
2094 fwstats
->bus_flow_block
,
2095 fwstats
->fws_flow_block
,
2096 fwstats
->send_pkts
[0], fwstats
->send_pkts
[1],
2097 fwstats
->send_pkts
[2], fwstats
->send_pkts
[3],
2098 fwstats
->send_pkts
[4],
2099 fwstats
->requested_sent
[0],
2100 fwstats
->requested_sent
[1],
2101 fwstats
->requested_sent
[2],
2102 fwstats
->requested_sent
[3],
2103 fwstats
->requested_sent
[4]);
2108 static int brcmf_debugfs_fws_stats_read(struct seq_file
*seq
, void *data
)
2114 int brcmf_fws_init(struct brcmf_pub
*drvr
)
2116 struct brcmf_fws_info
*fws
;
2117 struct brcmf_if
*ifp
;
2118 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
2122 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
2130 spin_lock_init(&fws
->spinlock
);
2132 /* set linkage back */
2134 fws
->fcmode
= drvr
->settings
->fcmode
;
2136 if ((drvr
->bus_if
->always_use_fws_queue
== false) &&
2137 (fws
->fcmode
== BRCMF_FWS_FCMODE_NONE
)) {
2138 fws
->avoid_queueing
= true;
2139 brcmf_dbg(INFO
, "FWS queueing will be avoided\n");
2143 fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
2144 if (fws
->fws_wq
== NULL
) {
2145 brcmf_err("workqueue creation failed\n");
2149 INIT_WORK(&fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
2151 /* enable firmware signalling if fcmode active */
2152 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
2153 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
2154 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
2155 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
|
2156 BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE
;
2158 rc
= brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
2159 brcmf_fws_notify_credit_map
);
2161 brcmf_err("register credit map handler failed\n");
2164 rc
= brcmf_fweh_register(drvr
, BRCMF_E_BCMC_CREDIT_SUPPORT
,
2165 brcmf_fws_notify_bcmc_credit_support
);
2167 brcmf_err("register bcmc credit handler failed\n");
2168 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
2172 /* Setting the iovar may fail if feature is unsupported
2173 * so leave the rc as is so driver initialization can
2174 * continue. Set mode back to none indicating not enabled.
2176 fws
->fw_signals
= true;
2177 ifp
= brcmf_get_ifp(drvr
, 0);
2178 if (brcmf_fil_iovar_int_set(ifp
, "tlv", tlv
)) {
2179 brcmf_err("failed to set bdcv2 tlv signaling\n");
2180 fws
->fcmode
= BRCMF_FWS_FCMODE_NONE
;
2181 fws
->fw_signals
= false;
2184 if (brcmf_fil_iovar_int_set(ifp
, "ampdu_hostreorder", 1))
2185 brcmf_dbg(INFO
, "enabling AMPDU host-reorder failed\n");
2187 /* Enable seq number reuse, if supported */
2188 if (brcmf_fil_iovar_int_get(ifp
, "wlfc_mode", &mode
) == 0) {
2189 if (BRCMF_FWS_MODE_GET_REUSESEQ(mode
)) {
2191 BRCMF_FWS_MODE_SET_REUSESEQ(mode
, 1);
2192 if (brcmf_fil_iovar_int_set(ifp
,
2193 "wlfc_mode", mode
) == 0) {
2194 BRCMF_FWS_MODE_SET_REUSESEQ(fws
->mode
, 1);
2199 brcmf_fws_hanger_init(&fws
->hanger
);
2200 brcmf_fws_macdesc_init(&fws
->desc
.other
, NULL
, 0);
2201 brcmf_fws_macdesc_set_name(fws
, &fws
->desc
.other
);
2202 brcmu_pktq_init(&fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
2205 /* create debugfs file for statistics */
2206 brcmf_debugfs_add_entry(drvr
, "fws_stats",
2207 brcmf_debugfs_fws_stats_read
);
2209 brcmf_dbg(INFO
, "%s bdcv2 tlv signaling [%x]\n",
2210 fws
->fw_signals
? "enabled" : "disabled", tlv
);
2214 brcmf_fws_deinit(drvr
);
2218 void brcmf_fws_deinit(struct brcmf_pub
*drvr
)
2220 struct brcmf_fws_info
*fws
= drvr
->fws
;
2225 if (drvr
->fws
->fws_wq
)
2226 destroy_workqueue(drvr
->fws
->fws_wq
);
2229 brcmf_fws_lock(fws
);
2230 brcmf_fws_cleanup(fws
, -1);
2232 brcmf_fws_unlock(fws
);
2234 /* free top structure */
2238 bool brcmf_fws_fc_active(struct brcmf_fws_info
*fws
)
2240 if (!fws
->creditmap_received
)
2243 return fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
;
2246 void brcmf_fws_bustxfail(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
2250 if (brcmf_skbcb(skb
)->state
== BRCMF_FWS_SKBSTATE_TIM
) {
2251 brcmu_pkt_buf_free_skb(skb
);
2254 brcmf_fws_lock(fws
);
2255 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
2256 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
, hslot
, 0, 0);
2257 brcmf_fws_unlock(fws
);
2260 void brcmf_fws_bus_blocked(struct brcmf_pub
*drvr
, bool flow_blocked
)
2262 struct brcmf_fws_info
*fws
= drvr
->fws
;
2264 fws
->bus_flow_blocked
= flow_blocked
;
2266 brcmf_fws_schedule_deq(fws
);
2268 fws
->stats
.bus_flow_block
++;