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 <uapi/linux/nl80211.h>
26 #include <net/cfg80211.h>
28 #include <brcmu_utils.h>
29 #include <brcmu_wifi.h>
31 #include "dhd_proto.h"
35 #include "fwil_types.h"
39 #include "wl_cfg80211.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
109 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
113 for (i
= 0; i
< ARRAY_SIZE(brcmf_fws_tlv_names
); i
++)
114 if (brcmf_fws_tlv_names
[i
].id
== id
)
115 return brcmf_fws_tlv_names
[i
].name
;
120 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
127 * flags used to enable tlv signalling from firmware.
129 #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
130 #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
131 #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
132 #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
133 #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
134 #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
135 #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
137 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
138 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
140 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
141 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
142 #define BRCMF_FWS_FLOWCONTROL_HIWATER 128
143 #define BRCMF_FWS_FLOWCONTROL_LOWATER 64
145 #define BRCMF_FWS_PSQ_PREC_COUNT ((NL80211_NUM_ACS + 1) * 2)
146 #define BRCMF_FWS_PSQ_LEN 256
148 #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
149 #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
151 #define BRCMF_FWS_RET_OK_NOSCHEDULE 0
152 #define BRCMF_FWS_RET_OK_SCHEDULE 1
155 * enum brcmf_fws_skb_state - indicates processing state of skb.
157 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
158 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
159 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
161 enum brcmf_fws_skb_state
{
162 BRCMF_FWS_SKBSTATE_NEW
,
163 BRCMF_FWS_SKBSTATE_DELAYED
,
164 BRCMF_FWS_SKBSTATE_SUPPRESSED
168 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
170 * @if_flags: holds interface index and packet related flags.
171 * @htod: host to device packet identifier (used in PKTTAG tlv).
172 * @state: transmit state of the packet.
173 * @mac: descriptor related to destination for this packet.
175 * This information is stored in control buffer struct sk_buff::cb, which
176 * provides 48 bytes of storage so this structure should not exceed that.
178 struct brcmf_skbuff_cb
{
181 enum brcmf_fws_skb_state state
;
182 struct brcmf_fws_mac_descriptor
*mac
;
186 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
188 #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
191 * sk_buff control if flags
193 * b[12] - packet sent upon credit request.
194 * b[11] - packet sent upon packet request.
195 * b[10] - packet only contains signalling data.
196 * b[9] - packet is a tx packet.
197 * b[8] - packet uses FIFO credit (non-pspoll).
198 * b[7] - interface in AP mode.
199 * b[3:0] - interface index.
201 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x1000
202 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 12
203 #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
204 #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
205 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
206 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
207 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
208 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
209 #define BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK 0x0100
210 #define BRCMF_SKB_IF_FLAGS_CREDITCHECK_SHIFT 8
211 #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
212 #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
213 #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
214 #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
216 #define brcmf_skb_if_flags_set_field(skb, field, value) \
217 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
218 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
219 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
220 #define brcmf_skb_if_flags_get_field(skb, field) \
221 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
222 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
223 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
226 * sk_buff control packet identifier
228 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
230 * - Generated at the host (e.g. dhd)
231 * - Seen as a generic sequence number by firmware except for the flags field.
233 * Generation : b[31] => generation number for this packet [host->fw]
234 * OR, current generation number [fw->host]
235 * Flags : b[30:27] => command, status flags
236 * FIFO-AC : b[26:24] => AC-FIFO id
237 * h-slot : b[23:8] => hanger-slot
238 * freerun : b[7:0] => A free running counter
240 #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
241 #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
242 #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
243 #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
244 #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
245 #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
246 #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
247 #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
248 #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
249 #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
251 #define brcmf_skb_htod_tag_set_field(skb, field, value) \
252 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
253 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
254 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
255 #define brcmf_skb_htod_tag_get_field(skb, field) \
256 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
257 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
258 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
260 #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
261 #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
262 #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
263 #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
264 #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
265 #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
266 #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
267 #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
268 #define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
269 #define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
271 #define brcmf_txstatus_get_field(txs, field) \
272 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
273 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
275 /* How long to defer borrowing in jiffies */
276 #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
279 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
281 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
282 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
283 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
284 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
285 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
286 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
287 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
289 enum brcmf_fws_fifo
{
290 BRCMF_FWS_FIFO_AC_BK
,
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.
311 enum brcmf_fws_txstatus
{
312 BRCMF_FWS_TXSTATUS_DISCARD
,
313 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
,
314 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
,
315 BRCMF_FWS_TXSTATUS_FW_TOSSED
318 enum brcmf_fws_fcmode
{
319 BRCMF_FWS_FCMODE_NONE
,
320 BRCMF_FWS_FCMODE_IMPLIED_CREDIT
,
321 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
324 enum brcmf_fws_mac_desc_state
{
325 BRCMF_FWS_STATE_OPEN
= 1,
326 BRCMF_FWS_STATE_CLOSE
330 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
332 * @occupied: slot is in use.
333 * @mac_handle: handle for mac entry determined by firmware.
334 * @interface_id: interface index.
335 * @state: current state.
336 * @suppressed: mac entry is suppressed.
337 * @generation: generation bit.
338 * @ac_bitmap: ac queue bitmap.
339 * @requested_credit: credits requested by firmware.
340 * @ea: ethernet address.
341 * @seq: per-node free-running sequence.
342 * @psq: power-save queue.
343 * @transit_count: packet in transit to firmware.
345 struct brcmf_fws_mac_descriptor
{
357 u8 seq
[BRCMF_FWS_FIFO_COUNT
];
361 int suppr_transit_count
;
362 bool send_tim_signal
;
363 u8 traffic_pending_bmp
;
364 u8 traffic_lastreported_bmp
;
367 #define BRCMF_FWS_HANGER_MAXITEMS 1024
370 * enum brcmf_fws_hanger_item_state - state of hanger item.
372 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
373 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
374 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
376 enum brcmf_fws_hanger_item_state
{
377 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
378 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
379 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
384 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
386 * @state: entry is either free or occupied.
387 * @pkt: packet itself.
389 struct brcmf_fws_hanger_item
{
390 enum brcmf_fws_hanger_item_state state
;
395 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
397 * @pushed: packets pushed to await txstatus.
398 * @popped: packets popped upon handling txstatus.
399 * @failed_to_push: packets that could not be pushed.
400 * @failed_to_pop: packets that could not be popped.
401 * @failed_slotfind: packets for which failed to find an entry.
402 * @slot_pos: last returned item index for a free entry.
403 * @items: array of hanger items.
405 struct brcmf_fws_hanger
{
412 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
415 struct brcmf_fws_macdesc_table
{
416 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
417 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
418 struct brcmf_fws_mac_descriptor other
;
421 struct brcmf_fws_info
{
422 struct brcmf_pub
*drvr
;
423 struct brcmf_fws_stats stats
;
424 struct brcmf_fws_hanger hanger
;
425 enum brcmf_fws_fcmode fcmode
;
426 struct brcmf_fws_macdesc_table desc
;
427 struct workqueue_struct
*fws_wq
;
428 struct work_struct fws_dequeue_work
;
429 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
430 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
431 int credits_borrowed
[BRCMF_FWS_FIFO_AC_VO
+ 1];
432 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
435 unsigned long borrow_defer_timestamp
;
436 bool bus_flow_blocked
;
437 bool creditmap_received
;
441 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
443 static const int brcmf_fws_prio2fifo
[] = {
444 BRCMF_FWS_FIFO_AC_BE
,
445 BRCMF_FWS_FIFO_AC_BK
,
446 BRCMF_FWS_FIFO_AC_BK
,
447 BRCMF_FWS_FIFO_AC_BE
,
448 BRCMF_FWS_FIFO_AC_VI
,
449 BRCMF_FWS_FIFO_AC_VI
,
450 BRCMF_FWS_FIFO_AC_VO
,
455 module_param(fcmode
, int, S_IRUSR
);
456 MODULE_PARM_DESC(fcmode
, "mode of firmware signalled flow control");
458 #define BRCMF_FWS_TLV_DEF(name, id, len) \
459 case BRCMF_FWS_TYPE_ ## name: \
463 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
465 * @fws: firmware-signalling information.
466 * @id: identifier of the TLV.
468 * Return: the specified length for the given TLV; Otherwise -EINVAL.
470 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
471 enum brcmf_fws_tlv_type id
)
474 BRCMF_FWS_TLV_DEFLIST
476 fws
->stats
.tlv_invalid_type
++;
481 #undef BRCMF_FWS_TLV_DEF
483 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
485 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
486 return ifidx
== *(int *)arg
;
489 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
492 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
497 matchfn
= brcmf_fws_ifidx_match
;
498 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
499 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
501 brcmu_pkt_buf_free_skb(skb
);
502 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
507 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
511 memset(hanger
, 0, sizeof(*hanger
));
512 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
513 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
516 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
520 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
522 while (i
!= h
->slot_pos
) {
523 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
528 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
531 brcmf_err("all slots occupied\n");
532 h
->failed_slotfind
++;
533 i
= BRCMF_FWS_HANGER_MAXITEMS
;
538 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
539 struct sk_buff
*pkt
, u32 slot_id
)
541 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
544 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
545 brcmf_err("slot is not free\n");
550 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
551 h
->items
[slot_id
].pkt
= pkt
;
556 static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
557 u32 slot_id
, struct sk_buff
**pktout
,
560 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
563 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
564 brcmf_err("entry not in use\n");
569 *pktout
= h
->items
[slot_id
].pkt
;
571 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
572 h
->items
[slot_id
].pkt
= NULL
;
578 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
581 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
584 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
) {
585 brcmf_err("entry not in use\n");
589 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
593 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
594 bool (*fn
)(struct sk_buff
*, void *),
597 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
600 enum brcmf_fws_hanger_item_state s
;
602 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
603 s
= h
->items
[i
].state
;
604 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
605 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
606 skb
= h
->items
[i
].pkt
;
607 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
608 /* suppress packets freed from psq */
609 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
610 brcmu_pkt_buf_free_skb(skb
);
612 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
618 static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info
*fws
,
619 struct brcmf_fws_mac_descriptor
*desc
)
621 if (desc
== &fws
->desc
.other
)
622 strlcpy(desc
->name
, "MAC-OTHER", sizeof(desc
->name
));
623 else if (desc
->mac_handle
)
624 scnprintf(desc
->name
, sizeof(desc
->name
), "MAC-%d:%d",
625 desc
->mac_handle
, desc
->interface_id
);
627 scnprintf(desc
->name
, sizeof(desc
->name
), "MACIF:%d",
631 static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
,
635 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
637 desc
->state
= BRCMF_FWS_STATE_OPEN
;
638 desc
->requested_credit
= 0;
639 /* depending on use may need ifp->bssidx instead */
640 desc
->interface_id
= ifidx
;
641 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
643 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
647 void brcmf_fws_clear_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
)
650 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
652 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
653 desc
->requested_credit
= 0;
656 static struct brcmf_fws_mac_descriptor
*
657 brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
659 struct brcmf_fws_mac_descriptor
*entry
;
663 return ERR_PTR(-EINVAL
);
665 entry
= &fws
->desc
.nodes
[0];
666 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
667 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
672 return ERR_PTR(-ENOENT
);
675 static struct brcmf_fws_mac_descriptor
*
676 brcmf_fws_find_mac_desc(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
,
679 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
682 multicast
= is_multicast_ether_addr(da
);
684 /* Multicast destination, STA and P2P clients get the interface entry.
685 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
686 * have their own entry.
688 if (multicast
&& ifp
->fws_desc
) {
689 entry
= ifp
->fws_desc
;
693 entry
= brcmf_fws_mac_descriptor_lookup(fws
, da
);
695 entry
= ifp
->fws_desc
;
701 static bool brcmf_fws_mac_desc_closed(struct brcmf_fws_info
*fws
,
702 struct brcmf_fws_mac_descriptor
*entry
,
705 struct brcmf_fws_mac_descriptor
*if_entry
;
708 /* for unique destination entries the related interface
711 if (entry
->mac_handle
) {
712 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
713 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
716 /* an entry is closed when the state is closed and
717 * the firmware did not request anything.
719 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
720 !entry
->requested_credit
&& !entry
->requested_packet
;
722 /* Or firmware does not allow traffic for given fifo */
723 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
726 static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info
*fws
,
727 struct brcmf_fws_mac_descriptor
*entry
,
730 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
731 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
732 entry
->occupied
= !!(entry
->psq
.len
);
736 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
737 bool (*fn
)(struct sk_buff
*, void *),
740 struct brcmf_fws_hanger_item
*hi
;
746 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
748 brcmf_dbg(TRACE
, "no txq to clean up\n");
752 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
753 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
755 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
756 hi
= &fws
->hanger
.items
[hslot
];
757 WARN_ON(skb
!= hi
->pkt
);
758 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
759 brcmu_pkt_buf_free_skb(skb
);
760 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
765 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
768 struct brcmf_fws_mac_descriptor
*table
;
769 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
775 matchfn
= brcmf_fws_ifidx_match
;
777 /* cleanup individual nodes */
778 table
= &fws
->desc
.nodes
[0];
779 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
780 brcmf_fws_mac_desc_cleanup(fws
, &table
[i
], ifidx
);
782 brcmf_fws_mac_desc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
783 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
784 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
787 static void brcmf_fws_tim_update(struct brcmf_fws_info
*ctx
,
788 struct brcmf_fws_mac_descriptor
*entry
,
791 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
792 /* check delayedQ and suppressQ in one call using bitmap */
793 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (prec
* 2)) == 0)
794 entry
->traffic_pending_bmp
=
795 entry
->traffic_pending_bmp
& ~NBITVAL(prec
);
797 entry
->traffic_pending_bmp
=
798 entry
->traffic_pending_bmp
| NBITVAL(prec
);
800 /* request a TIM update to firmware at the next piggyback opportunity */
801 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
802 entry
->send_tim_signal
= true;
806 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
809 struct brcmf_if
*ifp
= fws
->drvr
->iflist
[!if_id
? 0 : if_id
+ 1];
814 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
815 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
816 brcmf_txflowblock_if(ifp
,
817 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
818 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
819 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
)
820 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
824 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
826 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
831 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
833 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
838 mac_handle
= *data
++;
842 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
843 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
844 if (entry
->occupied
) {
845 brcmf_dbg(TRACE
, "deleting %s mac %pM\n",
847 brcmf_fws_mac_desc_cleanup(fws
, entry
, -1);
848 brcmf_fws_clear_mac_descriptor(entry
);
850 fws
->stats
.mac_update_failed
++;
854 existing
= brcmf_fws_mac_descriptor_lookup(fws
, addr
);
855 if (IS_ERR(existing
)) {
856 if (!entry
->occupied
) {
857 entry
->mac_handle
= mac_handle
;
858 brcmf_fws_init_mac_descriptor(entry
, addr
, ifidx
);
859 brcmf_fws_macdesc_set_name(fws
, entry
);
860 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
862 brcmf_dbg(TRACE
, "add %s mac %pM\n", entry
->name
, addr
);
864 fws
->stats
.mac_update_failed
++;
867 if (entry
!= existing
) {
868 brcmf_dbg(TRACE
, "copy mac %s\n", existing
->name
);
869 memcpy(entry
, existing
,
870 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
871 entry
->mac_handle
= mac_handle
;
872 brcmf_fws_clear_mac_descriptor(existing
);
873 brcmf_fws_macdesc_set_name(fws
, entry
);
874 brcmf_dbg(TRACE
, "relocate %s mac %pM\n", entry
->name
,
877 brcmf_dbg(TRACE
, "use existing\n");
878 WARN_ON(entry
->mac_handle
!= mac_handle
);
879 /* TODO: what should we do here: continue, reinit, .. */
885 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
888 struct brcmf_fws_mac_descriptor
*entry
;
892 mac_handle
= data
[0];
893 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
894 if (!entry
->occupied
) {
895 fws
->stats
.mac_ps_update_failed
++;
899 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
901 /* a state update should wipe old credits? */
902 entry
->requested_credit
= 0;
903 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
904 entry
->state
= BRCMF_FWS_STATE_OPEN
;
905 return BRCMF_FWS_RET_OK_SCHEDULE
;
907 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
908 for (i
= BRCMF_FWS_FIFO_AC_BE
; i
< NL80211_NUM_ACS
; i
++)
909 brcmf_fws_tim_update(fws
, entry
, i
);
911 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
914 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
917 struct brcmf_fws_mac_descriptor
*entry
;
923 if (ifidx
>= BRCMF_MAX_IFS
) {
928 entry
= &fws
->desc
.iface
[ifidx
];
929 if (!entry
->occupied
) {
934 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
937 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
938 entry
->state
= BRCMF_FWS_STATE_OPEN
;
939 return BRCMF_FWS_RET_OK_SCHEDULE
;
940 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
941 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
942 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
948 fws
->stats
.if_update_failed
++;
952 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
955 struct brcmf_fws_mac_descriptor
*entry
;
957 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
958 if (!entry
->occupied
) {
959 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
960 fws
->stats
.credit_request_failed
++;
962 fws
->stats
.packet_request_failed
++;
966 brcmf_dbg(TRACE
, "%s (%d): %s cnt %d bmp %d\n",
967 brcmf_fws_get_tlv_name(type
), type
, entry
->name
,
969 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
970 entry
->requested_credit
= data
[0];
972 entry
->requested_packet
= data
[0];
974 entry
->ac_bitmap
= data
[2];
975 return BRCMF_FWS_RET_OK_SCHEDULE
;
978 static int brcmf_fws_macdesc_use_credit(struct brcmf_fws_mac_descriptor
*entry
,
983 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
984 if (entry
->requested_credit
> 0) {
986 * if the packet was pulled out while destination is in
987 * closed state but had a non-zero packets requested,
988 * then this should not count against the FIFO credit.
989 * That is due to the fact that the firmware will
990 * most likely hold onto this packet until a suitable
991 * time later to push it to the appropriate AC FIFO.
993 entry
->requested_credit
--;
994 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 1);
996 } else if (entry
->requested_packet
> 0) {
997 entry
->requested_packet
--;
998 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1002 WARN_ON(entry
->requested_credit
);
1003 WARN_ON(entry
->requested_packet
);
1005 brcmf_skb_if_flags_set_field(skb
, CREDITCHECK
, use_credit
);
1009 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1010 u8 fifo
, u8 credits
)
1019 fws
->fifo_credit_map
|= 1 << fifo
;
1021 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1022 (fws
->credits_borrowed
[0])) {
1023 for (lender_ac
= BRCMF_FWS_FIFO_AC_VO
; lender_ac
>= 0;
1025 borrowed
= &fws
->credits_borrowed
[lender_ac
];
1027 fws
->fifo_credit_map
|= (1 << lender_ac
);
1028 fifo_credit
= &fws
->fifo_credit
[lender_ac
];
1029 if (*borrowed
>= credits
) {
1030 *borrowed
-= credits
;
1031 *fifo_credit
+= credits
;
1034 credits
-= *borrowed
;
1035 *fifo_credit
+= *borrowed
;
1042 fws
->fifo_credit
[fifo
] += credits
;
1045 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1047 /* only schedule dequeue when there are credits for delayed traffic */
1048 if (fws
->fifo_credit_map
& fws
->fifo_delay_map
)
1049 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1052 static void brcmf_fws_skb_pickup_credit(struct brcmf_fws_info
*fws
, int fifo
,
1055 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(p
)->mac
;
1057 if (brcmf_skbcb(p
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1058 brcmf_fws_return_credits(fws
, fifo
, 1);
1059 else if (brcmf_skb_if_flags_get_field(p
, REQ_CREDIT
) &&
1060 entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1062 * if this packet did not count against FIFO credit, it
1063 * could have taken a requested_credit from the destination
1064 * entry (for pspoll etc.)
1066 entry
->requested_credit
++;
1068 brcmf_fws_schedule_deq(fws
);
1071 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1072 enum brcmf_fws_skb_state state
, int fifo
,
1075 int prec
= 2 * fifo
;
1076 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1078 struct brcmf_fws_mac_descriptor
*entry
;
1080 entry
= brcmf_skbcb(p
)->mac
;
1081 if (entry
== NULL
) {
1082 brcmf_err("no mac descriptor found for skb %p\n", p
);
1086 brcmf_dbg(DATA
, "enter: fifo %d skb %p\n", fifo
, p
);
1087 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1089 qfull_stat
= &fws
->stats
.supprq_full_error
;
1092 if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1097 /* increment total enqueued packet count */
1098 fws
->fifo_delay_map
|= 1 << fifo
;
1099 fws
->fifo_enqpkt
[fifo
]++;
1101 /* update the sk_buff state */
1102 brcmf_skbcb(p
)->state
= state
;
1103 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
)
1104 entry
->suppress_count
++;
1107 * A packet has been pushed so update traffic
1108 * availability bitmap, if applicable
1110 brcmf_fws_tim_update(fws
, entry
, fifo
);
1111 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1112 brcmf_skb_if_flags_get_field(p
, INDEX
));
1116 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1118 struct brcmf_fws_mac_descriptor
*table
;
1119 struct brcmf_fws_mac_descriptor
*entry
;
1127 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1128 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1129 node_pos
= fws
->deq_node_pos
[fifo
];
1131 for (i
= 0; i
< num_nodes
; i
++) {
1132 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1133 if (!entry
->occupied
||
1134 brcmf_fws_mac_desc_closed(fws
, entry
, fifo
))
1137 if (entry
->suppressed
)
1141 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1143 if (entry
->suppressed
) {
1144 if (entry
->suppr_transit_count
>
1145 entry
->suppress_count
)
1147 entry
->suppressed
= false;
1148 p
= brcmu_pktq_mdeq(&entry
->psq
,
1149 1 << (fifo
* 2), &prec_out
);
1155 brcmf_fws_macdesc_use_credit(entry
, p
);
1157 /* move dequeue position to ensure fair round-robin */
1158 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1159 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1160 brcmf_skb_if_flags_get_field(p
,
1164 * A packet has been picked up, update traffic
1165 * availability bitmap, if applicable
1167 brcmf_fws_tim_update(fws
, entry
, fifo
);
1170 * decrement total enqueued fifo packets and
1171 * clear delay bitmap if done.
1173 fws
->fifo_enqpkt
[fifo
]--;
1174 if (fws
->fifo_enqpkt
[fifo
] == 0)
1175 fws
->fifo_delay_map
&= ~(1 << fifo
);
1180 brcmf_dbg(DATA
, "exit: fifo %d skb %p\n", fifo
, p
);
1184 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1185 struct sk_buff
*skb
, u32 genbit
)
1187 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1191 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1193 /* this packet was suppressed */
1194 if (!entry
->suppressed
) {
1195 entry
->suppressed
= true;
1196 entry
->suppress_count
= brcmu_pktq_mlen(&entry
->psq
,
1197 1 << (fifo
* 2 + 1));
1198 entry
->suppr_transit_count
= entry
->transit_count
;
1199 brcmf_dbg(DATA
, "suppress %s: supp_cnt %d transit %d\n",
1200 entry
->name
, entry
->suppress_count
,
1201 entry
->transit_count
);
1204 entry
->generation
= genbit
;
1206 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
, skb
);
1208 /* suppress q is full, drop this packet */
1209 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1213 * Mark suppressed to avoid a double free during
1216 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
);
1217 entry
->suppress_count
++;
1224 brcmf_fws_txs_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1229 bool remove_from_hanger
= true;
1230 struct sk_buff
*skb
;
1231 struct brcmf_skbuff_cb
*skcb
;
1232 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1234 brcmf_dbg(DATA
, "flags %d\n", flags
);
1236 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1237 fws
->stats
.txs_discard
++;
1238 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1239 fws
->stats
.txs_supp_core
++;
1240 remove_from_hanger
= false;
1241 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1242 fws
->stats
.txs_supp_ps
++;
1243 remove_from_hanger
= false;
1244 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1245 fws
->stats
.txs_tossed
++;
1247 brcmf_err("unexpected txstatus\n");
1249 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1250 remove_from_hanger
);
1252 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1256 skcb
= brcmf_skbcb(skb
);
1258 if (WARN_ON(!entry
)) {
1259 brcmu_pkt_buf_free_skb(skb
);
1263 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1266 /* pick up the implicit credit from this packet */
1267 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1268 if (fws
->fcmode
== BRCMF_FWS_FCMODE_IMPLIED_CREDIT
||
1269 !(brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
))
1270 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
1272 if (!remove_from_hanger
)
1273 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
, genbit
);
1275 if (remove_from_hanger
|| ret
) {
1276 entry
->transit_count
--;
1277 if (entry
->suppressed
)
1278 entry
->suppr_transit_count
--;
1280 brcmf_txfinalize(fws
->drvr
, skb
, true);
1285 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1290 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1291 brcmf_dbg(INFO
, "ignored\n");
1292 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1295 brcmf_dbg(DATA
, "enter: data %pM\n", data
);
1296 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1297 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1299 brcmf_dbg(DATA
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1300 fws
->fifo_delay_map
);
1301 return BRCMF_FWS_RET_OK_SCHEDULE
;
1304 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1312 fws
->stats
.txs_indicate
++;
1313 memcpy(&status_le
, data
, sizeof(status_le
));
1314 status
= le32_to_cpu(status_le
);
1315 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1316 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1317 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1319 return brcmf_fws_txs_process(fws
, flags
, hslot
, genbit
);
1322 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1326 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1327 brcmf_dbg(CTL
, "received: seq %d, timestamp %d\n", data
[1],
1328 le32_to_cpu(timestamp
));
1332 /* using macro so sparse checking does not complain
1333 * about locking imbalance.
1335 #define brcmf_fws_lock(drvr, flags) \
1338 spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
1341 /* using macro so sparse checking does not complain
1342 * about locking imbalance.
1344 #define brcmf_fws_unlock(drvr, flags) \
1345 spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
1347 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1348 const struct brcmf_event_msg
*e
,
1351 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1356 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1357 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1360 if (fws
->creditmap_received
)
1363 fws
->creditmap_received
= true;
1365 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1366 brcmf_fws_lock(ifp
->drvr
, flags
);
1367 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1369 fws
->fifo_credit_map
|= 1 << i
;
1371 fws
->fifo_credit_map
&= ~(1 << i
);
1372 fws
->fifo_credit
[i
] = *credits
++;
1374 brcmf_fws_schedule_deq(fws
);
1375 brcmf_fws_unlock(ifp
->drvr
, flags
);
1379 int brcmf_fws_hdrpull(struct brcmf_pub
*drvr
, int ifidx
, s16 signal_len
,
1380 struct sk_buff
*skb
)
1382 struct brcmf_fws_info
*fws
= drvr
->fws
;
1392 brcmf_dbg(HDRS
, "enter: ifidx %d, skblen %u, sig %d\n",
1393 ifidx
, skb
->len
, signal_len
);
1395 WARN_ON(signal_len
> skb
->len
);
1397 /* if flow control disabled, skip to packet data and leave */
1398 if (!signal_len
|| !drvr
->fw_signals
) {
1399 skb_pull(skb
, signal_len
);
1403 /* lock during tlv parsing */
1404 brcmf_fws_lock(drvr
, flags
);
1406 fws
->stats
.header_pulls
++;
1407 data_len
= signal_len
;
1408 signal_data
= skb
->data
;
1410 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1411 while (data_len
> 0) {
1412 /* extract tlv info */
1413 type
= signal_data
[0];
1415 /* FILLER type is actually not a TLV, but
1416 * a single byte that can be skipped.
1418 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1423 len
= signal_data
[1];
1424 data
= signal_data
+ 2;
1426 brcmf_dbg(HDRS
, "tlv type=%s (%d), len=%d (%d)\n",
1427 brcmf_fws_get_tlv_name(type
), type
, len
,
1428 brcmf_fws_get_tlv_len(fws
, type
));
1430 /* abort parsing when length invalid */
1431 if (data_len
< len
+ 2)
1434 if (len
< brcmf_fws_get_tlv_len(fws
, type
))
1437 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1439 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1440 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1442 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1443 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1444 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1446 case BRCMF_FWS_TYPE_MAC_OPEN
:
1447 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1448 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1450 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1451 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1452 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1455 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1456 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1457 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1459 case BRCMF_FWS_TYPE_TXSTATUS
:
1460 brcmf_fws_txstatus_indicate(fws
, data
);
1462 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1463 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1465 case BRCMF_FWS_TYPE_RSSI
:
1466 brcmf_fws_rssi_indicate(fws
, *data
);
1468 case BRCMF_FWS_TYPE_TRANS_ID
:
1469 brcmf_fws_dbg_seqnum_check(fws
, data
);
1471 case BRCMF_FWS_TYPE_PKTTAG
:
1472 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1474 fws
->stats
.tlv_invalid_type
++;
1477 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1478 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1479 signal_data
+= len
+ 2;
1480 data_len
-= len
+ 2;
1484 fws
->stats
.tlv_parse_failed
++;
1486 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1487 brcmf_fws_schedule_deq(fws
);
1489 /* signalling processing result does
1490 * not affect the actual ethernet packet.
1492 skb_pull(skb
, signal_len
);
1494 /* this may be a signal-only packet
1497 fws
->stats
.header_only_pkt
++;
1499 brcmf_fws_unlock(drvr
, flags
);
1503 static int brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1505 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1507 u16 data_offset
= 0;
1509 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
1511 if (entry
->send_tim_signal
)
1512 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1514 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
1515 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
1516 fillers
= round_up(data_offset
, 4) - data_offset
;
1517 data_offset
+= fillers
;
1519 skb_push(skb
, data_offset
);
1522 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
1523 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
1524 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
1525 wlh
+= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2;
1527 if (entry
->send_tim_signal
) {
1528 entry
->send_tim_signal
= 0;
1529 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
1530 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1531 wlh
[2] = entry
->mac_handle
;
1532 wlh
[3] = entry
->traffic_pending_bmp
;
1533 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
1534 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
1537 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
1539 brcmf_proto_hdrpush(fws
->drvr
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
1540 data_offset
>> 2, skb
);
1544 static int brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1547 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1548 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1551 int hslot
= BRCMF_FWS_HANGER_MAXITEMS
;
1556 first_time
= skcb
->state
!= BRCMF_FWS_SKBSTATE_SUPPRESSED
;
1559 rc
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, p
);
1561 brcmf_err("hdrpull failed\n");
1565 brcmf_skb_if_flags_set_field(p
, TRANSMIT
, 1);
1566 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1567 brcmf_skb_htod_tag_set_field(p
, GENERATION
, entry
->generation
);
1568 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1569 if (!(skcb
->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)) {
1571 * Indicate that this packet is being sent in response to an
1572 * explicit request from the firmware side.
1574 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1576 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1578 /* obtaining free slot may fail, but that will be caught
1579 * by the hanger push. This assures the packet has a BDC
1580 * header upon return.
1582 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1583 free_ctr
= entry
->seq
[fifo
];
1584 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1585 brcmf_skb_htod_tag_set_field(p
, FREERUN
, free_ctr
);
1586 entry
->transit_count
++;
1589 brcmf_fws_hdrpush(fws
, p
);
1591 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1593 brcmf_err("hanger push failed: rc=%d\n", rc
);
1600 brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
,
1601 struct sk_buff
*skb
, int fifo
)
1604 put the packet back to the head of queue
1606 - suppressed packet goes back to suppress sub-queue
1607 - pull out the header, if new or delayed packet
1609 Note: hslot is used only when header removal is done.
1611 struct brcmf_fws_mac_descriptor
*entry
;
1612 enum brcmf_fws_skb_state state
;
1613 struct sk_buff
*pktout
;
1618 state
= brcmf_skbcb(skb
)->state
;
1619 entry
= brcmf_skbcb(skb
)->mac
;
1621 if (entry
!= NULL
) {
1622 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1623 /* wl-header is saved for suppressed packets */
1624 pktout
= brcmu_pktq_penq_head(&entry
->psq
, 2 * fifo
+ 1,
1626 if (pktout
== NULL
) {
1627 brcmf_err("suppress queue full\n");
1631 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1633 /* remove header first */
1634 rc
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1636 brcmf_err("header removal failed\n");
1637 /* free the hanger slot */
1638 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
,
1644 /* delay-q packets are going to delay-q */
1645 pktout
= brcmu_pktq_penq_head(&entry
->psq
,
1647 if (pktout
== NULL
) {
1648 brcmf_err("delay queue full\n");
1652 /* free the hanger slot */
1653 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &pktout
,
1656 /* decrement sequence count */
1660 brcmf_err("no mac entry linked\n");
1667 brcmf_fws_bustxfail(fws
, skb
);
1668 fws
->stats
.rollback_failed
++;
1670 fws
->stats
.rollback_success
++;
1671 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
1675 static int brcmf_fws_borrow_credit(struct brcmf_fws_info
*fws
)
1679 if (time_after(fws
->borrow_defer_timestamp
, jiffies
)) {
1680 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1684 for (lender_ac
= 0; lender_ac
<= BRCMF_FWS_FIFO_AC_VO
; lender_ac
++) {
1685 if (fws
->fifo_credit
[lender_ac
]) {
1686 fws
->credits_borrowed
[lender_ac
]++;
1687 fws
->fifo_credit
[lender_ac
]--;
1688 if (fws
->fifo_credit
[lender_ac
] == 0)
1689 fws
->fifo_credit_map
&= ~(1 << lender_ac
);
1690 fws
->fifo_credit_map
|= (1 << BRCMF_FWS_FIFO_AC_BE
);
1691 brcmf_dbg(DATA
, "borrow credit from: %d\n", lender_ac
);
1695 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1699 static int brcmf_fws_consume_credit(struct brcmf_fws_info
*fws
, int fifo
,
1700 struct sk_buff
*skb
)
1702 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1703 int *credit
= &fws
->fifo_credit
[fifo
];
1705 if (!brcmf_fws_macdesc_use_credit(entry
, skb
))
1708 if (fifo
!= BRCMF_FWS_FIFO_AC_BE
)
1709 fws
->borrow_defer_timestamp
= jiffies
+
1710 BRCMF_FWS_BORROW_DEFER_PERIOD
;
1713 /* Try to borrow a credit from other queue */
1714 if (fifo
== BRCMF_FWS_FIFO_AC_BE
&&
1715 brcmf_fws_borrow_credit(fws
) == 0)
1718 brcmf_dbg(DATA
, "exit: ac=%d, credits depleted\n", fifo
);
1723 fws
->fifo_credit_map
&= ~(1 << fifo
);
1724 brcmf_dbg(DATA
, "exit: ac=%d, credits=%d\n", fifo
, *credit
);
1728 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1729 struct sk_buff
*skb
)
1731 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1732 struct brcmf_fws_mac_descriptor
*entry
;
1733 struct brcmf_bus
*bus
= fws
->drvr
->bus_if
;
1738 return PTR_ERR(entry
);
1740 rc
= brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1742 fws
->stats
.generic_error
++;
1746 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1748 rc
= brcmf_bus_txdata(bus
, skb
);
1753 fws
->stats
.pkt2bus
++;
1754 if (brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
) {
1755 fws
->stats
.send_pkts
[fifo
]++;
1756 fws
->stats
.fifo_credits_sent
[fifo
]++;
1762 brcmf_fws_rollback_toq(fws
, skb
, fifo
);
1766 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1768 struct brcmf_pub
*drvr
= ifp
->drvr
;
1769 struct brcmf_fws_info
*fws
= drvr
->fws
;
1770 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1771 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1773 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1774 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1776 /* determine the priority */
1778 skb
->priority
= cfg80211_classify8021d(skb
);
1780 drvr
->tx_multicast
+= !!multicast
;
1781 if (ntohs(eh
->h_proto
) == ETH_P_PAE
)
1782 atomic_inc(&ifp
->pend_8021x_cnt
);
1784 if (!brcmf_fws_fc_active(fws
)) {
1785 /* If the protocol uses a data header, apply it */
1786 brcmf_proto_hdrpush(drvr
, ifp
->ifidx
, 0, skb
);
1788 /* Use bus module to send data frame */
1789 return brcmf_bus_txdata(drvr
->bus_if
, skb
);
1792 /* set control buffer information */
1794 skcb
->mac
= brcmf_fws_find_mac_desc(fws
, ifp
, eh
->h_dest
);
1795 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1796 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1798 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1800 brcmf_dbg(DATA
, "%s mac %pM multi %d fifo %d\n", skcb
->mac
->name
,
1801 eh
->h_dest
, multicast
, fifo
);
1803 brcmf_fws_lock(drvr
, flags
);
1804 if (skcb
->mac
->suppressed
||
1805 fws
->bus_flow_blocked
||
1806 brcmf_fws_mac_desc_closed(fws
, skcb
->mac
, fifo
) ||
1807 brcmu_pktq_mlen(&skcb
->mac
->psq
, 3 << (fifo
* 2)) ||
1809 brcmf_fws_consume_credit(fws
, fifo
, skb
) < 0)) {
1810 /* enqueue the packet in delayQ */
1811 drvr
->fws
->fifo_delay_map
|= 1 << fifo
;
1812 brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1814 brcmf_fws_commit_skb(fws
, fifo
, skb
);
1816 brcmf_fws_unlock(drvr
, flags
);
1820 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1822 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1824 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1828 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1831 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1833 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1834 struct brcmf_fws_mac_descriptor
*entry
;
1836 if (!ifp
->ndev
|| !ifp
->drvr
->fw_signals
)
1839 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1840 ifp
->fws_desc
= entry
;
1841 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1842 brcmf_fws_macdesc_set_name(fws
, entry
);
1843 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1845 brcmf_dbg(TRACE
, "added %s\n", entry
->name
);
1848 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1850 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1856 brcmf_fws_lock(ifp
->drvr
, flags
);
1857 ifp
->fws_desc
= NULL
;
1858 brcmf_dbg(TRACE
, "deleting %s\n", entry
->name
);
1859 brcmf_fws_clear_mac_descriptor(entry
);
1860 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1861 brcmf_fws_unlock(ifp
->drvr
, flags
);
1864 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1866 struct brcmf_fws_info
*fws
;
1867 struct sk_buff
*skb
;
1871 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1873 brcmf_fws_lock(fws
->drvr
, flags
);
1874 for (fifo
= NL80211_NUM_ACS
; fifo
>= 0 && !fws
->bus_flow_blocked
;
1876 while (fws
->fifo_credit
[fifo
]) {
1877 skb
= brcmf_fws_deq(fws
, fifo
);
1880 if (brcmf_skbcb(skb
)->if_flags
&
1881 BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1882 fws
->fifo_credit
[fifo
]--;
1884 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1886 if (fws
->bus_flow_blocked
)
1889 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1890 (fws
->fifo_credit
[fifo
] == 0) &&
1891 (!fws
->bus_flow_blocked
)) {
1892 while (brcmf_fws_borrow_credit(fws
) == 0) {
1893 skb
= brcmf_fws_deq(fws
, fifo
);
1895 brcmf_fws_return_credits(fws
, fifo
, 1);
1898 brcmf_fws_commit_skb(fws
, fifo
, skb
);
1899 if (fws
->bus_flow_blocked
)
1904 brcmf_fws_unlock(fws
->drvr
, flags
);
1907 int brcmf_fws_init(struct brcmf_pub
*drvr
)
1909 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
1912 if (!drvr
->fw_signals
)
1915 spin_lock_init(&drvr
->fws_spinlock
);
1917 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
1923 /* set linkage back */
1924 drvr
->fws
->drvr
= drvr
;
1925 drvr
->fws
->fcmode
= fcmode
;
1927 drvr
->fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
1928 if (drvr
->fws
->fws_wq
== NULL
) {
1929 brcmf_err("workqueue creation failed\n");
1933 INIT_WORK(&drvr
->fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
1935 /* enable firmware signalling if fcmode active */
1936 if (drvr
->fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
1937 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
1938 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
1939 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
;
1941 rc
= brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
1942 brcmf_fws_notify_credit_map
);
1944 brcmf_err("register credit map handler failed\n");
1948 /* setting the iovar may fail if feature is unsupported
1949 * so leave the rc as is so driver initialization can
1952 if (brcmf_fil_iovar_int_set(drvr
->iflist
[0], "tlv", tlv
)) {
1953 brcmf_err("failed to set bdcv2 tlv signaling\n");
1957 brcmf_fws_hanger_init(&drvr
->fws
->hanger
);
1958 brcmf_fws_init_mac_descriptor(&drvr
->fws
->desc
.other
, NULL
, 0);
1959 brcmf_fws_macdesc_set_name(drvr
->fws
, &drvr
->fws
->desc
.other
);
1960 brcmu_pktq_init(&drvr
->fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1963 /* create debugfs file for statistics */
1964 brcmf_debugfs_create_fws_stats(drvr
, &drvr
->fws
->stats
);
1966 brcmf_dbg(INFO
, "%s bdcv2 tlv signaling [%x]\n",
1967 drvr
->fw_signals
? "enabled" : "disabled", tlv
);
1971 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
1973 brcmf_fws_deinit(drvr
);
1977 void brcmf_fws_deinit(struct brcmf_pub
*drvr
)
1979 struct brcmf_fws_info
*fws
= drvr
->fws
;
1985 /* disable firmware signalling entirely
1986 * to avoid using the workqueue.
1988 drvr
->fw_signals
= false;
1990 if (drvr
->fws
->fws_wq
)
1991 destroy_workqueue(drvr
->fws
->fws_wq
);
1994 brcmf_fws_lock(drvr
, flags
);
1995 brcmf_fws_cleanup(fws
, -1);
1997 brcmf_fws_unlock(drvr
, flags
);
1999 /* free top structure */
2003 bool brcmf_fws_fc_active(struct brcmf_fws_info
*fws
)
2008 return fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
;
2011 void brcmf_fws_bustxfail(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
2016 brcmf_fws_lock(fws
->drvr
, flags
);
2017 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_FW_TOSSED
,
2018 brcmf_skb_htod_tag_get_field(skb
, HSLOT
), 0);
2019 /* the packet never reached firmware so reclaim credit */
2020 if (fws
->fcmode
== BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
2021 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
2022 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
2024 brcmf_fws_unlock(fws
->drvr
, flags
);
2027 void brcmf_fws_bus_blocked(struct brcmf_pub
*drvr
, bool flow_blocked
)
2029 struct brcmf_fws_info
*fws
= drvr
->fws
;
2031 fws
->bus_flow_blocked
= flow_blocked
;
2033 brcmf_fws_schedule_deq(fws
);