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>
30 #include "dhd_proto.h"
34 #include "fwil_types.h"
38 #include "wl_cfg80211.h"
41 * DOC: Firmware Signalling
43 * Firmware can send signals to host and vice versa, which are passed in the
44 * data packets using TLV based header. This signalling layer is on top of the
45 * BDC bus protocol layer.
49 * single definition for firmware-driver flow control tlv's.
51 * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
52 * A length value 0 indicates variable length tlv.
54 #define BRCMF_FWS_TLV_DEFLIST \
55 BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
56 BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
57 BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
58 BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
59 BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
60 BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
61 BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
62 BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
63 BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
64 BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
65 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
66 BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
67 BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
68 BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
69 BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
70 BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
71 BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
74 * enum brcmf_fws_tlv_type - definition of tlv identifiers.
76 #define BRCMF_FWS_TLV_DEF(name, id, len) \
77 BRCMF_FWS_TYPE_ ## name = id,
78 enum brcmf_fws_tlv_type
{
80 BRCMF_FWS_TYPE_INVALID
82 #undef BRCMF_FWS_TLV_DEF
85 * enum brcmf_fws_tlv_len - definition of tlv lengths.
87 #define BRCMF_FWS_TLV_DEF(name, id, len) \
88 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
89 enum brcmf_fws_tlv_len
{
92 #undef BRCMF_FWS_TLV_DEF
96 * brcmf_fws_tlv_names - array of tlv names.
98 #define BRCMF_FWS_TLV_DEF(name, id, len) \
101 enum brcmf_fws_tlv_type id
;
103 } brcmf_fws_tlv_names
[] = {
104 BRCMF_FWS_TLV_DEFLIST
106 #undef BRCMF_FWS_TLV_DEF
108 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
112 for (i
= 0; i
< ARRAY_SIZE(brcmf_fws_tlv_names
); i
++)
113 if (brcmf_fws_tlv_names
[i
].id
== id
)
114 return brcmf_fws_tlv_names
[i
].name
;
119 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
126 * flags used to enable tlv signalling from firmware.
128 #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
129 #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
130 #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
131 #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
132 #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
133 #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
134 #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
136 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
137 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
139 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
140 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
141 #define BRCMF_FWS_FLOWCONTROL_HIWATER 128
142 #define BRCMF_FWS_FLOWCONTROL_LOWATER 64
144 #define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
145 #define BRCMF_FWS_PSQ_LEN 256
147 #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
148 #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
150 #define BRCMF_FWS_RET_OK_NOSCHEDULE 0
151 #define BRCMF_FWS_RET_OK_SCHEDULE 1
154 * enum brcmf_fws_skb_state - indicates processing state of skb.
156 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
157 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
158 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
159 * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info.
161 enum brcmf_fws_skb_state
{
162 BRCMF_FWS_SKBSTATE_NEW
,
163 BRCMF_FWS_SKBSTATE_DELAYED
,
164 BRCMF_FWS_SKBSTATE_SUPPRESSED
,
165 BRCMF_FWS_SKBSTATE_TIM
169 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
171 * @if_flags: holds interface index and packet related flags.
172 * @htod: host to device packet identifier (used in PKTTAG tlv).
173 * @state: transmit state of the packet.
174 * @mac: descriptor related to destination for this packet.
176 * This information is stored in control buffer struct sk_buff::cb, which
177 * provides 48 bytes of storage so this structure should not exceed that.
179 struct brcmf_skbuff_cb
{
182 enum brcmf_fws_skb_state state
;
183 struct brcmf_fws_mac_descriptor
*mac
;
187 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
189 #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
192 * sk_buff control if flags
194 * b[11] - packet sent upon firmware request.
195 * b[10] - packet only contains signalling data.
196 * b[9] - packet is a tx packet.
197 * b[8] - packet used requested credit
198 * b[7] - interface in AP mode.
199 * b[3:0] - interface index.
201 #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
202 #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
203 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
204 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
205 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
206 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
207 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
208 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
209 #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
210 #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
211 #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
212 #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
214 #define brcmf_skb_if_flags_set_field(skb, field, value) \
215 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
216 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
217 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
218 #define brcmf_skb_if_flags_get_field(skb, field) \
219 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
220 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
221 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
224 * sk_buff control packet identifier
226 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
228 * - Generated at the host (e.g. dhd)
229 * - Seen as a generic sequence number by firmware except for the flags field.
231 * Generation : b[31] => generation number for this packet [host->fw]
232 * OR, current generation number [fw->host]
233 * Flags : b[30:27] => command, status flags
234 * FIFO-AC : b[26:24] => AC-FIFO id
235 * h-slot : b[23:8] => hanger-slot
236 * freerun : b[7:0] => A free running counter
238 #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
239 #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
240 #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
241 #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
242 #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
243 #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
244 #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
245 #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
246 #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
247 #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
249 #define brcmf_skb_htod_tag_set_field(skb, field, value) \
250 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
251 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
252 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
253 #define brcmf_skb_htod_tag_get_field(skb, field) \
254 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
255 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
256 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
258 #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
259 #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
260 #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
261 #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
262 #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
263 #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
264 #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
265 #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
266 #define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
267 #define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
269 #define brcmf_txstatus_get_field(txs, field) \
270 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
271 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
273 /* How long to defer borrowing in jiffies */
274 #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
277 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
279 * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background.
280 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
281 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
282 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
283 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
284 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
285 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
286 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
288 enum brcmf_fws_fifo
{
289 BRCMF_FWS_FIFO_FIRST
,
290 BRCMF_FWS_FIFO_AC_BK
= BRCMF_FWS_FIFO_FIRST
,
291 BRCMF_FWS_FIFO_AC_BE
,
292 BRCMF_FWS_FIFO_AC_VI
,
293 BRCMF_FWS_FIFO_AC_VO
,
300 * enum brcmf_fws_txstatus - txstatus flag values.
302 * @BRCMF_FWS_TXSTATUS_DISCARD:
303 * host is free to discard the packet.
304 * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
305 * 802.11 core suppressed the packet.
306 * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
307 * firmware suppress the packet as device is already in PS mode.
308 * @BRCMF_FWS_TXSTATUS_FW_TOSSED:
309 * firmware tossed the packet.
310 * @BRCMF_FWS_TXSTATUS_HOST_TOSSED:
311 * host tossed the packet.
313 enum brcmf_fws_txstatus
{
314 BRCMF_FWS_TXSTATUS_DISCARD
,
315 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
,
316 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
,
317 BRCMF_FWS_TXSTATUS_FW_TOSSED
,
318 BRCMF_FWS_TXSTATUS_HOST_TOSSED
321 enum brcmf_fws_fcmode
{
322 BRCMF_FWS_FCMODE_NONE
,
323 BRCMF_FWS_FCMODE_IMPLIED_CREDIT
,
324 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
327 enum brcmf_fws_mac_desc_state
{
328 BRCMF_FWS_STATE_OPEN
= 1,
329 BRCMF_FWS_STATE_CLOSE
333 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
335 * @occupied: slot is in use.
336 * @mac_handle: handle for mac entry determined by firmware.
337 * @interface_id: interface index.
338 * @state: current state.
339 * @suppressed: mac entry is suppressed.
340 * @generation: generation bit.
341 * @ac_bitmap: ac queue bitmap.
342 * @requested_credit: credits requested by firmware.
343 * @ea: ethernet address.
344 * @seq: per-node free-running sequence.
345 * @psq: power-save queue.
346 * @transit_count: packet in transit to firmware.
348 struct brcmf_fws_mac_descriptor
{
360 u8 seq
[BRCMF_FWS_FIFO_COUNT
];
363 int suppr_transit_count
;
364 bool send_tim_signal
;
365 u8 traffic_pending_bmp
;
366 u8 traffic_lastreported_bmp
;
369 #define BRCMF_FWS_HANGER_MAXITEMS 1024
372 * enum brcmf_fws_hanger_item_state - state of hanger item.
374 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
375 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
376 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
378 enum brcmf_fws_hanger_item_state
{
379 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
380 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
381 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
386 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
388 * @state: entry is either free or occupied.
389 * @pkt: packet itself.
391 struct brcmf_fws_hanger_item
{
392 enum brcmf_fws_hanger_item_state state
;
397 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
399 * @pushed: packets pushed to await txstatus.
400 * @popped: packets popped upon handling txstatus.
401 * @failed_to_push: packets that could not be pushed.
402 * @failed_to_pop: packets that could not be popped.
403 * @failed_slotfind: packets for which failed to find an entry.
404 * @slot_pos: last returned item index for a free entry.
405 * @items: array of hanger items.
407 struct brcmf_fws_hanger
{
414 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
417 struct brcmf_fws_macdesc_table
{
418 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
419 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
420 struct brcmf_fws_mac_descriptor other
;
423 struct brcmf_fws_info
{
424 struct brcmf_pub
*drvr
;
425 struct brcmf_fws_stats stats
;
426 struct brcmf_fws_hanger hanger
;
427 enum brcmf_fws_fcmode fcmode
;
428 bool bcmc_credit_check
;
429 struct brcmf_fws_macdesc_table desc
;
430 struct workqueue_struct
*fws_wq
;
431 struct work_struct fws_dequeue_work
;
432 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
433 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
434 int credits_borrowed
[BRCMF_FWS_FIFO_AC_VO
+ 1];
435 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
438 unsigned long borrow_defer_timestamp
;
439 bool bus_flow_blocked
;
440 bool creditmap_received
;
444 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
446 static const int brcmf_fws_prio2fifo
[] = {
447 BRCMF_FWS_FIFO_AC_BE
,
448 BRCMF_FWS_FIFO_AC_BK
,
449 BRCMF_FWS_FIFO_AC_BK
,
450 BRCMF_FWS_FIFO_AC_BE
,
451 BRCMF_FWS_FIFO_AC_VI
,
452 BRCMF_FWS_FIFO_AC_VI
,
453 BRCMF_FWS_FIFO_AC_VO
,
458 module_param(fcmode
, int, S_IRUSR
);
459 MODULE_PARM_DESC(fcmode
, "mode of firmware signalled flow control");
461 #define BRCMF_FWS_TLV_DEF(name, id, len) \
462 case BRCMF_FWS_TYPE_ ## name: \
466 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
468 * @fws: firmware-signalling information.
469 * @id: identifier of the TLV.
471 * Return: the specified length for the given TLV; Otherwise -EINVAL.
473 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
474 enum brcmf_fws_tlv_type id
)
477 BRCMF_FWS_TLV_DEFLIST
479 fws
->stats
.tlv_invalid_type
++;
484 #undef BRCMF_FWS_TLV_DEF
486 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
488 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
489 return ifidx
== *(int *)arg
;
492 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
495 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
500 matchfn
= brcmf_fws_ifidx_match
;
501 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
502 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
504 brcmu_pkt_buf_free_skb(skb
);
505 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
510 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
514 memset(hanger
, 0, sizeof(*hanger
));
515 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
516 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
519 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
523 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
525 while (i
!= h
->slot_pos
) {
526 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
531 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
534 brcmf_err("all slots occupied\n");
535 h
->failed_slotfind
++;
536 i
= BRCMF_FWS_HANGER_MAXITEMS
;
541 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
542 struct sk_buff
*pkt
, u32 slot_id
)
544 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
547 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
548 brcmf_err("slot is not free\n");
553 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
554 h
->items
[slot_id
].pkt
= pkt
;
559 static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
560 u32 slot_id
, struct sk_buff
**pktout
,
563 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
566 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
567 brcmf_err("entry not in use\n");
572 *pktout
= h
->items
[slot_id
].pkt
;
574 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
575 h
->items
[slot_id
].pkt
= NULL
;
581 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
584 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
587 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
588 brcmf_err("entry not in use\n");
592 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
596 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
597 bool (*fn
)(struct sk_buff
*, void *),
600 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
603 enum brcmf_fws_hanger_item_state s
;
605 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
606 s
= h
->items
[i
].state
;
607 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
608 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
609 skb
= h
->items
[i
].pkt
;
610 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
611 /* suppress packets freed from psq */
612 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
613 brcmu_pkt_buf_free_skb(skb
);
615 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
621 static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info
*fws
,
622 struct brcmf_fws_mac_descriptor
*desc
)
624 if (desc
== &fws
->desc
.other
)
625 strlcpy(desc
->name
, "MAC-OTHER", sizeof(desc
->name
));
626 else if (desc
->mac_handle
)
627 scnprintf(desc
->name
, sizeof(desc
->name
), "MAC-%d:%d",
628 desc
->mac_handle
, desc
->interface_id
);
630 scnprintf(desc
->name
, sizeof(desc
->name
), "MACIF:%d",
634 static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor
*desc
,
638 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
640 desc
->state
= BRCMF_FWS_STATE_OPEN
;
641 desc
->requested_credit
= 0;
642 desc
->requested_packet
= 0;
643 /* depending on use may need ifp->bssidx instead */
644 desc
->interface_id
= ifidx
;
645 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
647 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
651 void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor
*desc
)
654 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
656 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
657 desc
->requested_credit
= 0;
658 desc
->requested_packet
= 0;
661 static struct brcmf_fws_mac_descriptor
*
662 brcmf_fws_macdesc_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
664 struct brcmf_fws_mac_descriptor
*entry
;
668 return ERR_PTR(-EINVAL
);
670 entry
= &fws
->desc
.nodes
[0];
671 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
672 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
677 return ERR_PTR(-ENOENT
);
680 static struct brcmf_fws_mac_descriptor
*
681 brcmf_fws_macdesc_find(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
, u8
*da
)
683 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
686 multicast
= is_multicast_ether_addr(da
);
688 /* Multicast destination, STA and P2P clients get the interface entry.
689 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
690 * have their own entry.
692 if (multicast
&& ifp
->fws_desc
) {
693 entry
= ifp
->fws_desc
;
697 entry
= brcmf_fws_macdesc_lookup(fws
, da
);
699 entry
= ifp
->fws_desc
;
705 static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info
*fws
,
706 struct brcmf_fws_mac_descriptor
*entry
,
709 struct brcmf_fws_mac_descriptor
*if_entry
;
712 /* for unique destination entries the related interface
715 if (entry
->mac_handle
) {
716 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
717 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
720 /* an entry is closed when the state is closed and
721 * the firmware did not request anything.
723 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
724 !entry
->requested_credit
&& !entry
->requested_packet
;
726 /* Or firmware does not allow traffic for given fifo */
727 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
730 static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info
*fws
,
731 struct brcmf_fws_mac_descriptor
*entry
,
734 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
735 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
736 entry
->occupied
= !!(entry
->psq
.len
);
740 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
741 bool (*fn
)(struct sk_buff
*, void *),
744 struct brcmf_fws_hanger_item
*hi
;
750 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
752 brcmf_dbg(TRACE
, "no txq to clean up\n");
756 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
757 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
759 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
760 hi
= &fws
->hanger
.items
[hslot
];
761 WARN_ON(skb
!= hi
->pkt
);
762 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
763 brcmu_pkt_buf_free_skb(skb
);
764 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
769 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
772 struct brcmf_fws_mac_descriptor
*table
;
773 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
779 matchfn
= brcmf_fws_ifidx_match
;
781 /* cleanup individual nodes */
782 table
= &fws
->desc
.nodes
[0];
783 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
784 brcmf_fws_macdesc_cleanup(fws
, &table
[i
], ifidx
);
786 brcmf_fws_macdesc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
787 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
788 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
791 static int brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
793 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
797 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
799 brcmf_dbg(TRACE
, "enter: ea=%pM, ifidx=%u (%u), pkttag=0x%08X, hslot=%d\n",
800 entry
->ea
, entry
->interface_id
,
801 brcmf_skb_if_flags_get_field(skb
, INDEX
),
802 le32_to_cpu(pkttag
), (le32_to_cpu(pkttag
) >> 8) & 0xffff);
803 if (entry
->send_tim_signal
)
804 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
806 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
807 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
808 fillers
= round_up(data_offset
, 4) - data_offset
;
809 data_offset
+= fillers
;
811 skb_push(skb
, data_offset
);
814 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
815 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
816 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
817 wlh
+= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2;
819 if (entry
->send_tim_signal
) {
820 entry
->send_tim_signal
= 0;
821 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
822 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
823 wlh
[2] = entry
->mac_handle
;
824 wlh
[3] = entry
->traffic_pending_bmp
;
825 brcmf_dbg(TRACE
, "adding TIM info: %02X:%02X:%02X:%02X\n",
826 wlh
[0], wlh
[1], wlh
[2], wlh
[3]);
827 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
828 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
831 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
833 brcmf_proto_hdrpush(fws
->drvr
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
834 data_offset
>> 2, skb
);
838 static bool brcmf_fws_tim_update(struct brcmf_fws_info
*fws
,
839 struct brcmf_fws_mac_descriptor
*entry
,
840 int fifo
, bool send_immediately
)
843 struct brcmf_bus
*bus
;
844 struct brcmf_skbuff_cb
*skcb
;
848 /* check delayedQ and suppressQ in one call using bitmap */
849 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (fifo
* 2)) == 0)
850 entry
->traffic_pending_bmp
&= ~NBITVAL(fifo
);
852 entry
->traffic_pending_bmp
|= NBITVAL(fifo
);
854 entry
->send_tim_signal
= false;
855 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
856 entry
->send_tim_signal
= true;
857 if (send_immediately
&& entry
->send_tim_signal
&&
858 entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
859 /* create a dummy packet and sent that. The traffic */
860 /* bitmap info will automatically be attached to that packet */
861 len
= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2 +
862 BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2 +
863 4 + fws
->drvr
->hdrlen
;
864 skb
= brcmu_pkt_buf_get_skb(len
);
868 skcb
= brcmf_skbcb(skb
);
870 skcb
->state
= BRCMF_FWS_SKBSTATE_TIM
;
871 bus
= fws
->drvr
->bus_if
;
872 err
= brcmf_fws_hdrpush(fws
, skb
);
874 err
= brcmf_bus_txdata(bus
, skb
);
876 brcmu_pkt_buf_free_skb(skb
);
883 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
886 struct brcmf_if
*ifp
= fws
->drvr
->iflist
[!if_id
? 0 : if_id
+ 1];
891 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
892 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
893 brcmf_txflowblock_if(ifp
,
894 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
895 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
896 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
) {
897 fws
->stats
.fws_flow_block
++;
898 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
903 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
905 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
910 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
912 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
917 mac_handle
= *data
++;
921 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
922 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
923 if (entry
->occupied
) {
924 brcmf_dbg(TRACE
, "deleting %s mac %pM\n",
926 brcmf_fws_macdesc_cleanup(fws
, entry
, -1);
927 brcmf_fws_macdesc_deinit(entry
);
929 fws
->stats
.mac_update_failed
++;
933 existing
= brcmf_fws_macdesc_lookup(fws
, addr
);
934 if (IS_ERR(existing
)) {
935 if (!entry
->occupied
) {
936 entry
->mac_handle
= mac_handle
;
937 brcmf_fws_macdesc_init(entry
, addr
, ifidx
);
938 brcmf_fws_macdesc_set_name(fws
, entry
);
939 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
941 brcmf_dbg(TRACE
, "add %s mac %pM\n", entry
->name
, addr
);
943 fws
->stats
.mac_update_failed
++;
946 if (entry
!= existing
) {
947 brcmf_dbg(TRACE
, "copy mac %s\n", existing
->name
);
948 memcpy(entry
, existing
,
949 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
950 entry
->mac_handle
= mac_handle
;
951 brcmf_fws_macdesc_deinit(existing
);
952 brcmf_fws_macdesc_set_name(fws
, entry
);
953 brcmf_dbg(TRACE
, "relocate %s mac %pM\n", entry
->name
,
956 brcmf_dbg(TRACE
, "use existing\n");
957 WARN_ON(entry
->mac_handle
!= mac_handle
);
958 /* TODO: what should we do here: continue, reinit, .. */
964 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
967 struct brcmf_fws_mac_descriptor
*entry
;
970 mac_handle
= data
[0];
971 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
972 if (!entry
->occupied
) {
973 fws
->stats
.mac_ps_update_failed
++;
976 /* a state update should wipe old credits */
977 entry
->requested_credit
= 0;
978 entry
->requested_packet
= 0;
979 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
980 entry
->state
= BRCMF_FWS_STATE_OPEN
;
981 return BRCMF_FWS_RET_OK_SCHEDULE
;
983 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
984 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BK
, false);
985 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BE
, false);
986 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VI
, false);
987 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VO
, true);
989 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
992 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
995 struct brcmf_fws_mac_descriptor
*entry
;
1001 if (ifidx
>= BRCMF_MAX_IFS
) {
1006 entry
= &fws
->desc
.iface
[ifidx
];
1007 if (!entry
->occupied
) {
1012 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
1015 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1016 entry
->state
= BRCMF_FWS_STATE_OPEN
;
1017 return BRCMF_FWS_RET_OK_SCHEDULE
;
1018 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1019 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
1020 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1026 fws
->stats
.if_update_failed
++;
1030 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
1033 struct brcmf_fws_mac_descriptor
*entry
;
1035 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
1036 if (!entry
->occupied
) {
1037 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1038 fws
->stats
.credit_request_failed
++;
1040 fws
->stats
.packet_request_failed
++;
1044 brcmf_dbg(TRACE
, "%s (%d): %s cnt %d bmp %d\n",
1045 brcmf_fws_get_tlv_name(type
), type
, entry
->name
,
1047 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1048 entry
->requested_credit
= data
[0];
1050 entry
->requested_packet
= data
[0];
1052 entry
->ac_bitmap
= data
[2];
1053 return BRCMF_FWS_RET_OK_SCHEDULE
;
1057 brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor
*entry
,
1058 struct sk_buff
*skb
)
1060 if (entry
->requested_credit
> 0) {
1061 entry
->requested_credit
--;
1062 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1063 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 1);
1064 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1065 brcmf_err("requested credit set while mac not closed!\n");
1066 } else if (entry
->requested_packet
> 0) {
1067 entry
->requested_packet
--;
1068 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1069 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1070 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1071 brcmf_err("requested packet set while mac not closed!\n");
1073 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 0);
1074 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1078 static void brcmf_fws_macdesc_return_req_credit(struct sk_buff
*skb
)
1080 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1082 if ((brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) &&
1083 (entry
->state
== BRCMF_FWS_STATE_CLOSE
))
1084 entry
->requested_credit
++;
1087 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1088 u8 fifo
, u8 credits
)
1097 fws
->fifo_credit_map
|= 1 << fifo
;
1099 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1100 (fws
->credits_borrowed
[0])) {
1101 for (lender_ac
= BRCMF_FWS_FIFO_AC_VO
; lender_ac
>= 0;
1103 borrowed
= &fws
->credits_borrowed
[lender_ac
];
1105 fws
->fifo_credit_map
|= (1 << lender_ac
);
1106 fifo_credit
= &fws
->fifo_credit
[lender_ac
];
1107 if (*borrowed
>= credits
) {
1108 *borrowed
-= credits
;
1109 *fifo_credit
+= credits
;
1112 credits
-= *borrowed
;
1113 *fifo_credit
+= *borrowed
;
1120 fws
->fifo_credit
[fifo
] += credits
;
1123 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1125 /* only schedule dequeue when there are credits for delayed traffic */
1126 if (fws
->fifo_credit_map
& fws
->fifo_delay_map
)
1127 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1130 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1131 enum brcmf_fws_skb_state state
, int fifo
,
1134 int prec
= 2 * fifo
;
1135 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1137 struct brcmf_fws_mac_descriptor
*entry
;
1139 entry
= brcmf_skbcb(p
)->mac
;
1140 if (entry
== NULL
) {
1141 brcmf_err("no mac descriptor found for skb %p\n", p
);
1145 brcmf_dbg(DATA
, "enter: fifo %d skb %p\n", fifo
, p
);
1146 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1148 qfull_stat
= &fws
->stats
.supprq_full_error
;
1151 if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1156 /* increment total enqueued packet count */
1157 fws
->fifo_delay_map
|= 1 << fifo
;
1158 fws
->fifo_enqpkt
[fifo
]++;
1160 /* update the sk_buff state */
1161 brcmf_skbcb(p
)->state
= state
;
1164 * A packet has been pushed so update traffic
1165 * availability bitmap, if applicable
1167 brcmf_fws_tim_update(fws
, entry
, fifo
, true);
1168 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1169 brcmf_skb_if_flags_get_field(p
, INDEX
));
1173 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1175 struct brcmf_fws_mac_descriptor
*table
;
1176 struct brcmf_fws_mac_descriptor
*entry
;
1184 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1185 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1186 node_pos
= fws
->deq_node_pos
[fifo
];
1188 for (i
= 0; i
< num_nodes
; i
++) {
1189 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1190 if (!entry
->occupied
||
1191 brcmf_fws_macdesc_closed(fws
, entry
, fifo
))
1194 if (entry
->suppressed
)
1198 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1200 if (entry
->suppressed
) {
1201 if (entry
->suppr_transit_count
)
1203 entry
->suppressed
= false;
1204 p
= brcmu_pktq_mdeq(&entry
->psq
,
1205 1 << (fifo
* 2), &prec_out
);
1211 brcmf_fws_macdesc_use_req_credit(entry
, p
);
1213 /* move dequeue position to ensure fair round-robin */
1214 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1215 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1216 brcmf_skb_if_flags_get_field(p
,
1220 * A packet has been picked up, update traffic
1221 * availability bitmap, if applicable
1223 brcmf_fws_tim_update(fws
, entry
, fifo
, false);
1226 * decrement total enqueued fifo packets and
1227 * clear delay bitmap if done.
1229 fws
->fifo_enqpkt
[fifo
]--;
1230 if (fws
->fifo_enqpkt
[fifo
] == 0)
1231 fws
->fifo_delay_map
&= ~(1 << fifo
);
1236 brcmf_dbg(DATA
, "exit: fifo %d skb %p\n", fifo
, p
);
1240 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1241 struct sk_buff
*skb
, u32 genbit
)
1243 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1248 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1250 /* this packet was suppressed */
1251 if (!entry
->suppressed
) {
1252 entry
->suppressed
= true;
1253 entry
->suppr_transit_count
= entry
->transit_count
;
1254 brcmf_dbg(DATA
, "suppress %s: transit %d\n",
1255 entry
->name
, entry
->transit_count
);
1258 entry
->generation
= genbit
;
1260 ret
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1262 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
,
1265 /* suppress q is full or hdrpull failed, drop this packet */
1266 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1270 * Mark suppressed to avoid a double free during
1273 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
);
1280 brcmf_fws_txs_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1285 bool remove_from_hanger
= true;
1286 struct sk_buff
*skb
;
1287 struct brcmf_skbuff_cb
*skcb
;
1288 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1290 brcmf_dbg(DATA
, "flags %d\n", flags
);
1292 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1293 fws
->stats
.txs_discard
++;
1294 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1295 fws
->stats
.txs_supp_core
++;
1296 remove_from_hanger
= false;
1297 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1298 fws
->stats
.txs_supp_ps
++;
1299 remove_from_hanger
= false;
1300 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1301 fws
->stats
.txs_tossed
++;
1302 else if (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)
1303 fws
->stats
.txs_host_tossed
++;
1305 brcmf_err("unexpected txstatus\n");
1307 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1308 remove_from_hanger
);
1310 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1314 skcb
= brcmf_skbcb(skb
);
1316 if (WARN_ON(!entry
)) {
1317 brcmu_pkt_buf_free_skb(skb
);
1320 entry
->transit_count
--;
1321 if (entry
->suppressed
&& entry
->suppr_transit_count
)
1322 entry
->suppr_transit_count
--;
1324 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1327 /* pick up the implicit credit from this packet */
1328 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1329 if ((fws
->fcmode
== BRCMF_FWS_FCMODE_IMPLIED_CREDIT
) ||
1330 (brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) ||
1331 (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)) {
1332 brcmf_fws_return_credits(fws
, fifo
, 1);
1333 brcmf_fws_schedule_deq(fws
);
1335 brcmf_fws_macdesc_return_req_credit(skb
);
1337 if (!remove_from_hanger
)
1338 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
, genbit
);
1340 if (remove_from_hanger
|| ret
)
1341 brcmf_txfinalize(fws
->drvr
, skb
, true);
1346 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1351 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1352 brcmf_dbg(INFO
, "ignored\n");
1353 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1356 brcmf_dbg(DATA
, "enter: data %pM\n", data
);
1357 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1358 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1360 brcmf_dbg(DATA
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1361 fws
->fifo_delay_map
);
1362 return BRCMF_FWS_RET_OK_SCHEDULE
;
1365 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1373 fws
->stats
.txs_indicate
++;
1374 memcpy(&status_le
, data
, sizeof(status_le
));
1375 status
= le32_to_cpu(status_le
);
1376 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1377 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1378 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1380 return brcmf_fws_txs_process(fws
, flags
, hslot
, genbit
);
1383 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1387 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1388 brcmf_dbg(CTL
, "received: seq %d, timestamp %d\n", data
[1],
1389 le32_to_cpu(timestamp
));
1393 /* using macro so sparse checking does not complain
1394 * about locking imbalance.
1396 #define brcmf_fws_lock(drvr, flags) \
1399 spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
1402 /* using macro so sparse checking does not complain
1403 * about locking imbalance.
1405 #define brcmf_fws_unlock(drvr, flags) \
1406 spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
1408 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1409 const struct brcmf_event_msg
*e
,
1412 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1417 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1418 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1421 if (fws
->creditmap_received
)
1424 fws
->creditmap_received
= true;
1426 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1427 brcmf_fws_lock(ifp
->drvr
, flags
);
1428 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1430 fws
->fifo_credit_map
|= 1 << i
;
1432 fws
->fifo_credit_map
&= ~(1 << i
);
1433 fws
->fifo_credit
[i
] = *credits
++;
1435 brcmf_fws_schedule_deq(fws
);
1436 brcmf_fws_unlock(ifp
->drvr
, flags
);
1440 static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if
*ifp
,
1441 const struct brcmf_event_msg
*e
,
1444 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1447 brcmf_fws_lock(ifp
->drvr
, flags
);
1449 fws
->bcmc_credit_check
= true;
1450 brcmf_fws_unlock(ifp
->drvr
, flags
);
1454 int brcmf_fws_hdrpull(struct brcmf_pub
*drvr
, int ifidx
, s16 signal_len
,
1455 struct sk_buff
*skb
)
1457 struct brcmf_fws_info
*fws
= drvr
->fws
;
1467 brcmf_dbg(HDRS
, "enter: ifidx %d, skblen %u, sig %d\n",
1468 ifidx
, skb
->len
, signal_len
);
1470 WARN_ON(signal_len
> skb
->len
);
1472 /* if flow control disabled, skip to packet data and leave */
1473 if (!signal_len
|| !drvr
->fw_signals
) {
1474 skb_pull(skb
, signal_len
);
1478 /* lock during tlv parsing */
1479 brcmf_fws_lock(drvr
, flags
);
1481 fws
->stats
.header_pulls
++;
1482 data_len
= signal_len
;
1483 signal_data
= skb
->data
;
1485 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1486 while (data_len
> 0) {
1487 /* extract tlv info */
1488 type
= signal_data
[0];
1490 /* FILLER type is actually not a TLV, but
1491 * a single byte that can be skipped.
1493 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1498 len
= signal_data
[1];
1499 data
= signal_data
+ 2;
1501 brcmf_dbg(HDRS
, "tlv type=%s (%d), len=%d (%d)\n",
1502 brcmf_fws_get_tlv_name(type
), type
, len
,
1503 brcmf_fws_get_tlv_len(fws
, type
));
1505 /* abort parsing when length invalid */
1506 if (data_len
< len
+ 2)
1509 if (len
< brcmf_fws_get_tlv_len(fws
, type
))
1512 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1514 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1515 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1517 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1518 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1519 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1521 case BRCMF_FWS_TYPE_MAC_OPEN
:
1522 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1523 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1525 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1526 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1527 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1530 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1531 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1532 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1534 case BRCMF_FWS_TYPE_TXSTATUS
:
1535 brcmf_fws_txstatus_indicate(fws
, data
);
1537 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1538 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1540 case BRCMF_FWS_TYPE_RSSI
:
1541 brcmf_fws_rssi_indicate(fws
, *data
);
1543 case BRCMF_FWS_TYPE_TRANS_ID
:
1544 brcmf_fws_dbg_seqnum_check(fws
, data
);
1546 case BRCMF_FWS_TYPE_PKTTAG
:
1547 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1549 fws
->stats
.tlv_invalid_type
++;
1552 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1553 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1554 signal_data
+= len
+ 2;
1555 data_len
-= len
+ 2;
1559 fws
->stats
.tlv_parse_failed
++;
1561 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1562 brcmf_fws_schedule_deq(fws
);
1564 /* signalling processing result does
1565 * not affect the actual ethernet packet.
1567 skb_pull(skb
, signal_len
);
1569 /* this may be a signal-only packet
1572 fws
->stats
.header_only_pkt
++;
1574 brcmf_fws_unlock(drvr
, flags
);
1578 static int brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1581 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1582 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1585 int hslot
= BRCMF_FWS_HANGER_MAXITEMS
;
1589 first_time
= skcb
->state
!= BRCMF_FWS_SKBSTATE_SUPPRESSED
;
1591 brcmf_skb_if_flags_set_field(p
, TRANSMIT
, 1);
1592 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1593 brcmf_skb_htod_tag_set_field(p
, GENERATION
, entry
->generation
);
1594 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1595 if (brcmf_skb_if_flags_get_field(p
, REQUESTED
)) {
1597 * Indicate that this packet is being sent in response to an
1598 * explicit request from the firmware side.
1600 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1602 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1604 /* obtaining free slot may fail, but that will be caught
1605 * by the hanger push. This assures the packet has a BDC
1606 * header upon return.
1608 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1609 free_ctr
= entry
->seq
[fifo
];
1610 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1611 brcmf_skb_htod_tag_set_field(p
, FREERUN
, free_ctr
);
1612 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1614 brcmf_err("hanger push failed: rc=%d\n", rc
);
1618 brcmf_fws_hdrpush(fws
, p
);
1624 brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
,
1625 struct sk_buff
*skb
, int fifo
)
1628 put the packet back to the head of queue
1630 - suppressed packet goes back to suppress sub-queue
1631 - pull out the header, if new or delayed packet
1633 Note: hslot is used only when header removal is done.
1635 struct brcmf_fws_mac_descriptor
*entry
;
1636 enum brcmf_fws_skb_state state
;
1637 struct sk_buff
*pktout
;
1641 state
= brcmf_skbcb(skb
)->state
;
1642 entry
= brcmf_skbcb(skb
)->mac
;
1643 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1645 if (entry
!= NULL
) {
1646 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1647 /* wl-header is saved for suppressed packets */
1648 pktout
= brcmu_pktq_penq_head(&entry
->psq
, 2 * fifo
+ 1,
1650 if (pktout
== NULL
) {
1651 brcmf_err("suppress queue full\n");
1655 /* delay-q packets are going to delay-q */
1656 pktout
= brcmu_pktq_penq_head(&entry
->psq
,
1658 if (pktout
== NULL
) {
1659 brcmf_err("delay queue full\n");
1663 /* free the hanger slot */
1664 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &pktout
,
1667 /* decrement sequence count */
1671 brcmf_err("no mac entry linked\n");
1676 fws
->stats
.rollback_failed
++;
1677 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
,
1680 fws
->stats
.rollback_success
++;
1681 brcmf_fws_return_credits(fws
, fifo
, 1);
1682 brcmf_fws_macdesc_return_req_credit(skb
);
1686 static int brcmf_fws_borrow_credit(struct brcmf_fws_info
*fws
)
1690 if (time_after(fws
->borrow_defer_timestamp
, jiffies
)) {
1691 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1695 for (lender_ac
= 0; lender_ac
<= BRCMF_FWS_FIFO_AC_VO
; lender_ac
++) {
1696 if (fws
->fifo_credit
[lender_ac
]) {
1697 fws
->credits_borrowed
[lender_ac
]++;
1698 fws
->fifo_credit
[lender_ac
]--;
1699 if (fws
->fifo_credit
[lender_ac
] == 0)
1700 fws
->fifo_credit_map
&= ~(1 << lender_ac
);
1701 fws
->fifo_credit_map
|= (1 << BRCMF_FWS_FIFO_AC_BE
);
1702 brcmf_dbg(DATA
, "borrow credit from: %d\n", lender_ac
);
1706 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1710 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1711 struct sk_buff
*skb
)
1713 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1714 struct brcmf_fws_mac_descriptor
*entry
;
1715 struct brcmf_bus
*bus
= fws
->drvr
->bus_if
;
1721 return PTR_ERR(entry
);
1723 rc
= brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1725 fws
->stats
.generic_error
++;
1729 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1731 rc
= brcmf_bus_txdata(bus
, skb
);
1733 brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1737 entry
->transit_count
++;
1738 if (entry
->suppressed
)
1739 entry
->suppr_transit_count
++;
1741 fws
->stats
.pkt2bus
++;
1742 fws
->stats
.send_pkts
[fifo
]++;
1743 if (brcmf_skb_if_flags_get_field(skb
, REQUESTED
))
1744 fws
->stats
.requested_sent
[fifo
]++;
1749 brcmf_fws_rollback_toq(fws
, skb
, fifo
);
1753 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1755 struct brcmf_pub
*drvr
= ifp
->drvr
;
1756 struct brcmf_fws_info
*fws
= drvr
->fws
;
1757 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1758 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1760 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1761 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1763 /* determine the priority */
1765 skb
->priority
= cfg80211_classify8021d(skb
);
1767 drvr
->tx_multicast
+= !!multicast
;
1768 if (ntohs(eh
->h_proto
) == ETH_P_PAE
)
1769 atomic_inc(&ifp
->pend_8021x_cnt
);
1771 if (!brcmf_fws_fc_active(fws
)) {
1772 /* If the protocol uses a data header, apply it */
1773 brcmf_proto_hdrpush(drvr
, ifp
->ifidx
, 0, skb
);
1775 /* Use bus module to send data frame */
1776 return brcmf_bus_txdata(drvr
->bus_if
, skb
);
1779 /* set control buffer information */
1781 skcb
->mac
= brcmf_fws_macdesc_find(fws
, ifp
, eh
->h_dest
);
1782 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1783 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1785 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1787 brcmf_dbg(DATA
, "%s mac %pM multi %d fifo %d\n", skcb
->mac
->name
,
1788 eh
->h_dest
, multicast
, fifo
);
1790 brcmf_fws_lock(drvr
, flags
);
1791 brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1792 if (fifo
!= BRCMF_FWS_FIFO_AC_BE
&& fifo
< BRCMF_FWS_FIFO_BCMC
)
1793 fws
->borrow_defer_timestamp
= jiffies
+
1794 BRCMF_FWS_BORROW_DEFER_PERIOD
;
1795 brcmf_fws_unlock(drvr
, flags
);
1796 brcmf_fws_schedule_deq(fws
);
1800 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1802 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1804 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1808 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1811 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1813 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1814 struct brcmf_fws_mac_descriptor
*entry
;
1816 if (!ifp
->ndev
|| !ifp
->drvr
->fw_signals
)
1819 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1820 ifp
->fws_desc
= entry
;
1821 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1822 brcmf_fws_macdesc_set_name(fws
, entry
);
1823 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1825 brcmf_dbg(TRACE
, "added %s\n", entry
->name
);
1828 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1830 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1836 brcmf_fws_lock(ifp
->drvr
, flags
);
1837 ifp
->fws_desc
= NULL
;
1838 brcmf_dbg(TRACE
, "deleting %s\n", entry
->name
);
1839 brcmf_fws_macdesc_deinit(entry
);
1840 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1841 brcmf_fws_unlock(ifp
->drvr
, flags
);
1844 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1846 struct brcmf_fws_info
*fws
;
1847 struct sk_buff
*skb
;
1851 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1853 brcmf_fws_lock(fws
->drvr
, flags
);
1854 for (fifo
= NL80211_NUM_ACS
; fifo
>= 0 && !fws
->bus_flow_blocked
;
1856 while ((fws
->fifo_credit
[fifo
]) || ((!fws
->bcmc_credit_check
) &&
1857 (fifo
== BRCMF_FWS_FIFO_BCMC
))) {
1858 skb
= brcmf_fws_deq(fws
, fifo
);
1861 fws
->fifo_credit
[fifo
]--;
1862 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1864 if (fws
->bus_flow_blocked
)
1867 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1868 (fws
->fifo_credit
[fifo
] == 0) &&
1869 (!fws
->bus_flow_blocked
)) {
1870 while (brcmf_fws_borrow_credit(fws
) == 0) {
1871 skb
= brcmf_fws_deq(fws
, fifo
);
1873 brcmf_fws_return_credits(fws
, fifo
, 1);
1876 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1878 if (fws
->bus_flow_blocked
)
1883 brcmf_fws_unlock(fws
->drvr
, flags
);
1886 int brcmf_fws_init(struct brcmf_pub
*drvr
)
1888 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
1891 if (!drvr
->fw_signals
)
1894 spin_lock_init(&drvr
->fws_spinlock
);
1896 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
1902 /* set linkage back */
1903 drvr
->fws
->drvr
= drvr
;
1904 drvr
->fws
->fcmode
= fcmode
;
1906 drvr
->fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
1907 if (drvr
->fws
->fws_wq
== NULL
) {
1908 brcmf_err("workqueue creation failed\n");
1912 INIT_WORK(&drvr
->fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
1914 /* enable firmware signalling if fcmode active */
1915 if (drvr
->fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
1916 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
1917 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
1918 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
;
1920 rc
= brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
1921 brcmf_fws_notify_credit_map
);
1923 brcmf_err("register credit map handler failed\n");
1926 rc
= brcmf_fweh_register(drvr
, BRCMF_E_BCMC_CREDIT_SUPPORT
,
1927 brcmf_fws_notify_bcmc_credit_support
);
1929 brcmf_err("register bcmc credit handler failed\n");
1930 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
1934 /* setting the iovar may fail if feature is unsupported
1935 * so leave the rc as is so driver initialization can
1938 if (brcmf_fil_iovar_int_set(drvr
->iflist
[0], "tlv", tlv
)) {
1939 brcmf_err("failed to set bdcv2 tlv signaling\n");
1943 brcmf_fws_hanger_init(&drvr
->fws
->hanger
);
1944 brcmf_fws_macdesc_init(&drvr
->fws
->desc
.other
, NULL
, 0);
1945 brcmf_fws_macdesc_set_name(drvr
->fws
, &drvr
->fws
->desc
.other
);
1946 brcmu_pktq_init(&drvr
->fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1949 /* create debugfs file for statistics */
1950 brcmf_debugfs_create_fws_stats(drvr
, &drvr
->fws
->stats
);
1952 brcmf_dbg(INFO
, "%s bdcv2 tlv signaling [%x]\n",
1953 drvr
->fw_signals
? "enabled" : "disabled", tlv
);
1957 brcmf_fweh_unregister(drvr
, BRCMF_E_BCMC_CREDIT_SUPPORT
);
1958 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
1960 brcmf_fws_deinit(drvr
);
1964 void brcmf_fws_deinit(struct brcmf_pub
*drvr
)
1966 struct brcmf_fws_info
*fws
= drvr
->fws
;
1972 /* disable firmware signalling entirely
1973 * to avoid using the workqueue.
1975 drvr
->fw_signals
= false;
1977 if (drvr
->fws
->fws_wq
)
1978 destroy_workqueue(drvr
->fws
->fws_wq
);
1981 brcmf_fws_lock(drvr
, flags
);
1982 brcmf_fws_cleanup(fws
, -1);
1984 brcmf_fws_unlock(drvr
, flags
);
1986 /* free top structure */
1990 bool brcmf_fws_fc_active(struct brcmf_fws_info
*fws
)
1995 return fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
;
1998 void brcmf_fws_bustxfail(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
2003 if (brcmf_skbcb(skb
)->state
== BRCMF_FWS_SKBSTATE_TIM
) {
2004 brcmu_pkt_buf_free_skb(skb
);
2007 brcmf_fws_lock(fws
->drvr
, flags
);
2008 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
2009 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
, hslot
, 0);
2010 brcmf_fws_unlock(fws
->drvr
, flags
);
2013 void brcmf_fws_bus_blocked(struct brcmf_pub
*drvr
, bool flow_blocked
)
2015 struct brcmf_fws_info
*fws
= drvr
->fws
;
2017 fws
->bus_flow_blocked
= flow_blocked
;
2019 brcmf_fws_schedule_deq(fws
);
2021 fws
->stats
.bus_flow_block
++;