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
];
360 int suppr_transit_count
;
361 bool send_tim_signal
;
362 u8 traffic_pending_bmp
;
363 u8 traffic_lastreported_bmp
;
366 #define BRCMF_FWS_HANGER_MAXITEMS 1024
369 * enum brcmf_fws_hanger_item_state - state of hanger item.
371 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
372 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
373 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
375 enum brcmf_fws_hanger_item_state
{
376 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
377 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
378 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
383 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
385 * @state: entry is either free or occupied.
386 * @pkt: packet itself.
388 struct brcmf_fws_hanger_item
{
389 enum brcmf_fws_hanger_item_state state
;
394 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
396 * @pushed: packets pushed to await txstatus.
397 * @popped: packets popped upon handling txstatus.
398 * @failed_to_push: packets that could not be pushed.
399 * @failed_to_pop: packets that could not be popped.
400 * @failed_slotfind: packets for which failed to find an entry.
401 * @slot_pos: last returned item index for a free entry.
402 * @items: array of hanger items.
404 struct brcmf_fws_hanger
{
411 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
414 struct brcmf_fws_macdesc_table
{
415 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
416 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
417 struct brcmf_fws_mac_descriptor other
;
420 struct brcmf_fws_info
{
421 struct brcmf_pub
*drvr
;
422 struct brcmf_fws_stats stats
;
423 struct brcmf_fws_hanger hanger
;
424 enum brcmf_fws_fcmode fcmode
;
425 struct brcmf_fws_macdesc_table desc
;
426 struct workqueue_struct
*fws_wq
;
427 struct work_struct fws_dequeue_work
;
428 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
429 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
430 int credits_borrowed
[BRCMF_FWS_FIFO_AC_VO
+ 1];
431 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
434 unsigned long borrow_defer_timestamp
;
435 bool bus_flow_blocked
;
436 bool creditmap_received
;
440 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
442 static const int brcmf_fws_prio2fifo
[] = {
443 BRCMF_FWS_FIFO_AC_BE
,
444 BRCMF_FWS_FIFO_AC_BK
,
445 BRCMF_FWS_FIFO_AC_BK
,
446 BRCMF_FWS_FIFO_AC_BE
,
447 BRCMF_FWS_FIFO_AC_VI
,
448 BRCMF_FWS_FIFO_AC_VI
,
449 BRCMF_FWS_FIFO_AC_VO
,
454 module_param(fcmode
, int, S_IRUSR
);
455 MODULE_PARM_DESC(fcmode
, "mode of firmware signalled flow control");
457 #define BRCMF_FWS_TLV_DEF(name, id, len) \
458 case BRCMF_FWS_TYPE_ ## name: \
462 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
464 * @fws: firmware-signalling information.
465 * @id: identifier of the TLV.
467 * Return: the specified length for the given TLV; Otherwise -EINVAL.
469 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
470 enum brcmf_fws_tlv_type id
)
473 BRCMF_FWS_TLV_DEFLIST
475 fws
->stats
.tlv_invalid_type
++;
480 #undef BRCMF_FWS_TLV_DEF
482 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
484 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
485 return ifidx
== *(int *)arg
;
488 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
491 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
496 matchfn
= brcmf_fws_ifidx_match
;
497 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
498 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
500 brcmu_pkt_buf_free_skb(skb
);
501 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
506 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
510 memset(hanger
, 0, sizeof(*hanger
));
511 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
512 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
515 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
519 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
521 while (i
!= h
->slot_pos
) {
522 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
527 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
530 brcmf_err("all slots occupied\n");
531 h
->failed_slotfind
++;
532 i
= BRCMF_FWS_HANGER_MAXITEMS
;
537 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
538 struct sk_buff
*pkt
, u32 slot_id
)
540 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
543 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
544 brcmf_err("slot is not free\n");
549 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
550 h
->items
[slot_id
].pkt
= pkt
;
555 static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
556 u32 slot_id
, struct sk_buff
**pktout
,
559 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
562 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
563 brcmf_err("entry not in use\n");
568 *pktout
= h
->items
[slot_id
].pkt
;
570 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
571 h
->items
[slot_id
].pkt
= NULL
;
577 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
580 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
583 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
) {
584 brcmf_err("entry not in use\n");
588 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
592 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
593 bool (*fn
)(struct sk_buff
*, void *),
596 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
599 enum brcmf_fws_hanger_item_state s
;
601 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
602 s
= h
->items
[i
].state
;
603 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
604 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
605 skb
= h
->items
[i
].pkt
;
606 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
607 /* suppress packets freed from psq */
608 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
609 brcmu_pkt_buf_free_skb(skb
);
611 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
617 static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info
*fws
,
618 struct brcmf_fws_mac_descriptor
*desc
)
620 if (desc
== &fws
->desc
.other
)
621 strlcpy(desc
->name
, "MAC-OTHER", sizeof(desc
->name
));
622 else if (desc
->mac_handle
)
623 scnprintf(desc
->name
, sizeof(desc
->name
), "MAC-%d:%d",
624 desc
->mac_handle
, desc
->interface_id
);
626 scnprintf(desc
->name
, sizeof(desc
->name
), "MACIF:%d",
630 static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
,
634 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
636 desc
->state
= BRCMF_FWS_STATE_OPEN
;
637 desc
->requested_credit
= 0;
638 /* depending on use may need ifp->bssidx instead */
639 desc
->interface_id
= ifidx
;
640 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
642 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
646 void brcmf_fws_clear_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
)
649 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
651 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
652 desc
->requested_credit
= 0;
655 static struct brcmf_fws_mac_descriptor
*
656 brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
658 struct brcmf_fws_mac_descriptor
*entry
;
662 return ERR_PTR(-EINVAL
);
664 entry
= &fws
->desc
.nodes
[0];
665 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
666 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
671 return ERR_PTR(-ENOENT
);
674 static struct brcmf_fws_mac_descriptor
*
675 brcmf_fws_find_mac_desc(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
,
678 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
681 multicast
= is_multicast_ether_addr(da
);
683 /* Multicast destination, STA and P2P clients get the interface entry.
684 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
685 * have their own entry.
687 if (multicast
&& ifp
->fws_desc
) {
688 entry
= ifp
->fws_desc
;
692 entry
= brcmf_fws_mac_descriptor_lookup(fws
, da
);
694 entry
= ifp
->fws_desc
;
700 static bool brcmf_fws_mac_desc_closed(struct brcmf_fws_info
*fws
,
701 struct brcmf_fws_mac_descriptor
*entry
,
704 struct brcmf_fws_mac_descriptor
*if_entry
;
707 /* for unique destination entries the related interface
710 if (entry
->mac_handle
) {
711 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
712 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
715 /* an entry is closed when the state is closed and
716 * the firmware did not request anything.
718 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
719 !entry
->requested_credit
&& !entry
->requested_packet
;
721 /* Or firmware does not allow traffic for given fifo */
722 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
725 static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info
*fws
,
726 struct brcmf_fws_mac_descriptor
*entry
,
729 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
730 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
731 entry
->occupied
= !!(entry
->psq
.len
);
735 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
736 bool (*fn
)(struct sk_buff
*, void *),
739 struct brcmf_fws_hanger_item
*hi
;
745 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
747 brcmf_dbg(TRACE
, "no txq to clean up\n");
751 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
752 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
754 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
755 hi
= &fws
->hanger
.items
[hslot
];
756 WARN_ON(skb
!= hi
->pkt
);
757 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
758 brcmu_pkt_buf_free_skb(skb
);
759 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
764 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
767 struct brcmf_fws_mac_descriptor
*table
;
768 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
774 matchfn
= brcmf_fws_ifidx_match
;
776 /* cleanup individual nodes */
777 table
= &fws
->desc
.nodes
[0];
778 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
779 brcmf_fws_mac_desc_cleanup(fws
, &table
[i
], ifidx
);
781 brcmf_fws_mac_desc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
782 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
783 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
786 static void brcmf_fws_tim_update(struct brcmf_fws_info
*ctx
,
787 struct brcmf_fws_mac_descriptor
*entry
,
790 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
791 /* check delayedQ and suppressQ in one call using bitmap */
792 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (prec
* 2)) == 0)
793 entry
->traffic_pending_bmp
=
794 entry
->traffic_pending_bmp
& ~NBITVAL(prec
);
796 entry
->traffic_pending_bmp
=
797 entry
->traffic_pending_bmp
| NBITVAL(prec
);
799 /* request a TIM update to firmware at the next piggyback opportunity */
800 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
801 entry
->send_tim_signal
= true;
805 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
808 struct brcmf_if
*ifp
= fws
->drvr
->iflist
[!if_id
? 0 : if_id
+ 1];
813 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
814 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
815 brcmf_txflowblock_if(ifp
,
816 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
817 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
818 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
)
819 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
823 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
825 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
830 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
832 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
837 mac_handle
= *data
++;
841 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
842 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
843 if (entry
->occupied
) {
844 brcmf_dbg(TRACE
, "deleting %s mac %pM\n",
846 brcmf_fws_mac_desc_cleanup(fws
, entry
, -1);
847 brcmf_fws_clear_mac_descriptor(entry
);
849 fws
->stats
.mac_update_failed
++;
853 existing
= brcmf_fws_mac_descriptor_lookup(fws
, addr
);
854 if (IS_ERR(existing
)) {
855 if (!entry
->occupied
) {
856 entry
->mac_handle
= mac_handle
;
857 brcmf_fws_init_mac_descriptor(entry
, addr
, ifidx
);
858 brcmf_fws_macdesc_set_name(fws
, entry
);
859 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
861 brcmf_dbg(TRACE
, "add %s mac %pM\n", entry
->name
, addr
);
863 fws
->stats
.mac_update_failed
++;
866 if (entry
!= existing
) {
867 brcmf_dbg(TRACE
, "copy mac %s\n", existing
->name
);
868 memcpy(entry
, existing
,
869 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
870 entry
->mac_handle
= mac_handle
;
871 brcmf_fws_clear_mac_descriptor(existing
);
872 brcmf_fws_macdesc_set_name(fws
, entry
);
873 brcmf_dbg(TRACE
, "relocate %s mac %pM\n", entry
->name
,
876 brcmf_dbg(TRACE
, "use existing\n");
877 WARN_ON(entry
->mac_handle
!= mac_handle
);
878 /* TODO: what should we do here: continue, reinit, .. */
884 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
887 struct brcmf_fws_mac_descriptor
*entry
;
891 mac_handle
= data
[0];
892 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
893 if (!entry
->occupied
) {
894 fws
->stats
.mac_ps_update_failed
++;
898 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
900 /* a state update should wipe old credits? */
901 entry
->requested_credit
= 0;
902 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
903 entry
->state
= BRCMF_FWS_STATE_OPEN
;
904 return BRCMF_FWS_RET_OK_SCHEDULE
;
906 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
907 for (i
= BRCMF_FWS_FIFO_AC_BE
; i
< NL80211_NUM_ACS
; i
++)
908 brcmf_fws_tim_update(fws
, entry
, i
);
910 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
913 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
916 struct brcmf_fws_mac_descriptor
*entry
;
922 if (ifidx
>= BRCMF_MAX_IFS
) {
927 entry
= &fws
->desc
.iface
[ifidx
];
928 if (!entry
->occupied
) {
933 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
936 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
937 entry
->state
= BRCMF_FWS_STATE_OPEN
;
938 return BRCMF_FWS_RET_OK_SCHEDULE
;
939 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
940 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
941 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
947 fws
->stats
.if_update_failed
++;
951 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
954 struct brcmf_fws_mac_descriptor
*entry
;
956 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
957 if (!entry
->occupied
) {
958 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
959 fws
->stats
.credit_request_failed
++;
961 fws
->stats
.packet_request_failed
++;
965 brcmf_dbg(TRACE
, "%s (%d): %s cnt %d bmp %d\n",
966 brcmf_fws_get_tlv_name(type
), type
, entry
->name
,
968 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
969 entry
->requested_credit
= data
[0];
971 entry
->requested_packet
= data
[0];
973 entry
->ac_bitmap
= data
[2];
974 return BRCMF_FWS_RET_OK_SCHEDULE
;
977 static int brcmf_fws_macdesc_use_credit(struct brcmf_fws_mac_descriptor
*entry
,
982 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
983 if (entry
->requested_credit
> 0) {
985 * if the packet was pulled out while destination is in
986 * closed state but had a non-zero packets requested,
987 * then this should not count against the FIFO credit.
988 * That is due to the fact that the firmware will
989 * most likely hold onto this packet until a suitable
990 * time later to push it to the appropriate AC FIFO.
992 entry
->requested_credit
--;
993 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 1);
995 } else if (entry
->requested_packet
> 0) {
996 entry
->requested_packet
--;
997 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1001 WARN_ON(entry
->requested_credit
);
1002 WARN_ON(entry
->requested_packet
);
1004 brcmf_skb_if_flags_set_field(skb
, CREDITCHECK
, use_credit
);
1008 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1009 u8 fifo
, u8 credits
)
1018 fws
->fifo_credit_map
|= 1 << fifo
;
1020 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1021 (fws
->credits_borrowed
[0])) {
1022 for (lender_ac
= BRCMF_FWS_FIFO_AC_VO
; lender_ac
>= 0;
1024 borrowed
= &fws
->credits_borrowed
[lender_ac
];
1026 fws
->fifo_credit_map
|= (1 << lender_ac
);
1027 fifo_credit
= &fws
->fifo_credit
[lender_ac
];
1028 if (*borrowed
>= credits
) {
1029 *borrowed
-= credits
;
1030 *fifo_credit
+= credits
;
1033 credits
-= *borrowed
;
1034 *fifo_credit
+= *borrowed
;
1041 fws
->fifo_credit
[fifo
] += credits
;
1044 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1046 /* only schedule dequeue when there are credits for delayed traffic */
1047 if (fws
->fifo_credit_map
& fws
->fifo_delay_map
)
1048 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1051 static void brcmf_fws_skb_pickup_credit(struct brcmf_fws_info
*fws
, int fifo
,
1054 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(p
)->mac
;
1056 if (brcmf_skbcb(p
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1057 brcmf_fws_return_credits(fws
, fifo
, 1);
1058 else if (brcmf_skb_if_flags_get_field(p
, REQ_CREDIT
) &&
1059 entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1061 * if this packet did not count against FIFO credit, it
1062 * could have taken a requested_credit from the destination
1063 * entry (for pspoll etc.)
1065 entry
->requested_credit
++;
1067 brcmf_fws_schedule_deq(fws
);
1070 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1071 enum brcmf_fws_skb_state state
, int fifo
,
1074 int prec
= 2 * fifo
;
1075 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1077 struct brcmf_fws_mac_descriptor
*entry
;
1079 entry
= brcmf_skbcb(p
)->mac
;
1080 if (entry
== NULL
) {
1081 brcmf_err("no mac descriptor found for skb %p\n", p
);
1085 brcmf_dbg(DATA
, "enter: fifo %d skb %p\n", fifo
, p
);
1086 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1088 qfull_stat
= &fws
->stats
.supprq_full_error
;
1091 if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1096 /* increment total enqueued packet count */
1097 fws
->fifo_delay_map
|= 1 << fifo
;
1098 fws
->fifo_enqpkt
[fifo
]++;
1100 /* update the sk_buff state */
1101 brcmf_skbcb(p
)->state
= state
;
1104 * A packet has been pushed so update traffic
1105 * availability bitmap, if applicable
1107 brcmf_fws_tim_update(fws
, entry
, fifo
);
1108 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1109 brcmf_skb_if_flags_get_field(p
, INDEX
));
1113 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1115 struct brcmf_fws_mac_descriptor
*table
;
1116 struct brcmf_fws_mac_descriptor
*entry
;
1124 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1125 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1126 node_pos
= fws
->deq_node_pos
[fifo
];
1128 for (i
= 0; i
< num_nodes
; i
++) {
1129 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1130 if (!entry
->occupied
||
1131 brcmf_fws_mac_desc_closed(fws
, entry
, fifo
))
1134 if (entry
->suppressed
)
1138 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1140 if (entry
->suppressed
) {
1141 if (entry
->suppr_transit_count
)
1143 entry
->suppressed
= false;
1144 p
= brcmu_pktq_mdeq(&entry
->psq
,
1145 1 << (fifo
* 2), &prec_out
);
1151 brcmf_fws_macdesc_use_credit(entry
, p
);
1153 /* move dequeue position to ensure fair round-robin */
1154 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1155 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1156 brcmf_skb_if_flags_get_field(p
,
1160 * A packet has been picked up, update traffic
1161 * availability bitmap, if applicable
1163 brcmf_fws_tim_update(fws
, entry
, fifo
);
1166 * decrement total enqueued fifo packets and
1167 * clear delay bitmap if done.
1169 fws
->fifo_enqpkt
[fifo
]--;
1170 if (fws
->fifo_enqpkt
[fifo
] == 0)
1171 fws
->fifo_delay_map
&= ~(1 << fifo
);
1176 brcmf_dbg(DATA
, "exit: fifo %d skb %p\n", fifo
, p
);
1180 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1181 struct sk_buff
*skb
, u32 genbit
)
1183 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1188 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1190 /* this packet was suppressed */
1191 if (!entry
->suppressed
) {
1192 entry
->suppressed
= true;
1193 entry
->suppr_transit_count
= entry
->transit_count
;
1194 brcmf_dbg(DATA
, "suppress %s: transit %d\n",
1195 entry
->name
, entry
->transit_count
);
1198 entry
->generation
= genbit
;
1200 ret
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1202 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
,
1205 /* suppress q is full or hdrpull failed, drop this packet */
1206 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1210 * Mark suppressed to avoid a double free during
1213 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
);
1220 brcmf_fws_txs_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1225 bool remove_from_hanger
= true;
1226 struct sk_buff
*skb
;
1227 struct brcmf_skbuff_cb
*skcb
;
1228 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1230 brcmf_dbg(DATA
, "flags %d\n", flags
);
1232 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1233 fws
->stats
.txs_discard
++;
1234 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1235 fws
->stats
.txs_supp_core
++;
1236 remove_from_hanger
= false;
1237 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1238 fws
->stats
.txs_supp_ps
++;
1239 remove_from_hanger
= false;
1240 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1241 fws
->stats
.txs_tossed
++;
1243 brcmf_err("unexpected txstatus\n");
1245 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1246 remove_from_hanger
);
1248 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1252 skcb
= brcmf_skbcb(skb
);
1254 if (WARN_ON(!entry
)) {
1255 brcmu_pkt_buf_free_skb(skb
);
1258 entry
->transit_count
--;
1259 if (entry
->suppressed
&& entry
->suppr_transit_count
)
1260 entry
->suppr_transit_count
--;
1262 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1265 /* pick up the implicit credit from this packet */
1266 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1267 if (fws
->fcmode
== BRCMF_FWS_FCMODE_IMPLIED_CREDIT
||
1268 !(brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
))
1269 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
1271 if (!remove_from_hanger
)
1272 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
, genbit
);
1274 if (remove_from_hanger
|| ret
)
1275 brcmf_txfinalize(fws
->drvr
, skb
, true);
1280 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1285 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1286 brcmf_dbg(INFO
, "ignored\n");
1287 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1290 brcmf_dbg(DATA
, "enter: data %pM\n", data
);
1291 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1292 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1294 brcmf_dbg(DATA
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1295 fws
->fifo_delay_map
);
1296 return BRCMF_FWS_RET_OK_SCHEDULE
;
1299 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1307 fws
->stats
.txs_indicate
++;
1308 memcpy(&status_le
, data
, sizeof(status_le
));
1309 status
= le32_to_cpu(status_le
);
1310 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1311 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1312 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1314 return brcmf_fws_txs_process(fws
, flags
, hslot
, genbit
);
1317 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1321 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1322 brcmf_dbg(CTL
, "received: seq %d, timestamp %d\n", data
[1],
1323 le32_to_cpu(timestamp
));
1327 /* using macro so sparse checking does not complain
1328 * about locking imbalance.
1330 #define brcmf_fws_lock(drvr, flags) \
1333 spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
1336 /* using macro so sparse checking does not complain
1337 * about locking imbalance.
1339 #define brcmf_fws_unlock(drvr, flags) \
1340 spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
1342 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1343 const struct brcmf_event_msg
*e
,
1346 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1351 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1352 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1355 if (fws
->creditmap_received
)
1358 fws
->creditmap_received
= true;
1360 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1361 brcmf_fws_lock(ifp
->drvr
, flags
);
1362 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1364 fws
->fifo_credit_map
|= 1 << i
;
1366 fws
->fifo_credit_map
&= ~(1 << i
);
1367 fws
->fifo_credit
[i
] = *credits
++;
1369 brcmf_fws_schedule_deq(fws
);
1370 brcmf_fws_unlock(ifp
->drvr
, flags
);
1374 int brcmf_fws_hdrpull(struct brcmf_pub
*drvr
, int ifidx
, s16 signal_len
,
1375 struct sk_buff
*skb
)
1377 struct brcmf_fws_info
*fws
= drvr
->fws
;
1387 brcmf_dbg(HDRS
, "enter: ifidx %d, skblen %u, sig %d\n",
1388 ifidx
, skb
->len
, signal_len
);
1390 WARN_ON(signal_len
> skb
->len
);
1392 /* if flow control disabled, skip to packet data and leave */
1393 if (!signal_len
|| !drvr
->fw_signals
) {
1394 skb_pull(skb
, signal_len
);
1398 /* lock during tlv parsing */
1399 brcmf_fws_lock(drvr
, flags
);
1401 fws
->stats
.header_pulls
++;
1402 data_len
= signal_len
;
1403 signal_data
= skb
->data
;
1405 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1406 while (data_len
> 0) {
1407 /* extract tlv info */
1408 type
= signal_data
[0];
1410 /* FILLER type is actually not a TLV, but
1411 * a single byte that can be skipped.
1413 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1418 len
= signal_data
[1];
1419 data
= signal_data
+ 2;
1421 brcmf_dbg(HDRS
, "tlv type=%s (%d), len=%d (%d)\n",
1422 brcmf_fws_get_tlv_name(type
), type
, len
,
1423 brcmf_fws_get_tlv_len(fws
, type
));
1425 /* abort parsing when length invalid */
1426 if (data_len
< len
+ 2)
1429 if (len
< brcmf_fws_get_tlv_len(fws
, type
))
1432 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1434 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1435 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1437 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1438 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1439 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1441 case BRCMF_FWS_TYPE_MAC_OPEN
:
1442 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1443 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1445 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1446 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1447 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1450 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1451 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1452 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1454 case BRCMF_FWS_TYPE_TXSTATUS
:
1455 brcmf_fws_txstatus_indicate(fws
, data
);
1457 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1458 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1460 case BRCMF_FWS_TYPE_RSSI
:
1461 brcmf_fws_rssi_indicate(fws
, *data
);
1463 case BRCMF_FWS_TYPE_TRANS_ID
:
1464 brcmf_fws_dbg_seqnum_check(fws
, data
);
1466 case BRCMF_FWS_TYPE_PKTTAG
:
1467 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1469 fws
->stats
.tlv_invalid_type
++;
1472 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1473 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1474 signal_data
+= len
+ 2;
1475 data_len
-= len
+ 2;
1479 fws
->stats
.tlv_parse_failed
++;
1481 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1482 brcmf_fws_schedule_deq(fws
);
1484 /* signalling processing result does
1485 * not affect the actual ethernet packet.
1487 skb_pull(skb
, signal_len
);
1489 /* this may be a signal-only packet
1492 fws
->stats
.header_only_pkt
++;
1494 brcmf_fws_unlock(drvr
, flags
);
1498 static int brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1500 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1502 u16 data_offset
= 0;
1504 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
1506 if (entry
->send_tim_signal
)
1507 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1509 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
1510 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
1511 fillers
= round_up(data_offset
, 4) - data_offset
;
1512 data_offset
+= fillers
;
1514 skb_push(skb
, data_offset
);
1517 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
1518 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
1519 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
1520 wlh
+= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2;
1522 if (entry
->send_tim_signal
) {
1523 entry
->send_tim_signal
= 0;
1524 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
1525 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1526 wlh
[2] = entry
->mac_handle
;
1527 wlh
[3] = entry
->traffic_pending_bmp
;
1528 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
1529 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
1532 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
1534 brcmf_proto_hdrpush(fws
->drvr
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
1535 data_offset
>> 2, skb
);
1539 static int brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1542 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1543 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1546 int hslot
= BRCMF_FWS_HANGER_MAXITEMS
;
1550 first_time
= skcb
->state
!= BRCMF_FWS_SKBSTATE_SUPPRESSED
;
1552 brcmf_skb_if_flags_set_field(p
, TRANSMIT
, 1);
1553 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1554 brcmf_skb_htod_tag_set_field(p
, GENERATION
, entry
->generation
);
1555 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1556 if (!(skcb
->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)) {
1558 * Indicate that this packet is being sent in response to an
1559 * explicit request from the firmware side.
1561 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1563 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1565 /* obtaining free slot may fail, but that will be caught
1566 * by the hanger push. This assures the packet has a BDC
1567 * header upon return.
1569 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1570 free_ctr
= entry
->seq
[fifo
];
1571 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1572 brcmf_skb_htod_tag_set_field(p
, FREERUN
, free_ctr
);
1573 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1575 brcmf_err("hanger push failed: rc=%d\n", rc
);
1579 brcmf_fws_hdrpush(fws
, p
);
1585 brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
,
1586 struct sk_buff
*skb
, int fifo
)
1589 put the packet back to the head of queue
1591 - suppressed packet goes back to suppress sub-queue
1592 - pull out the header, if new or delayed packet
1594 Note: hslot is used only when header removal is done.
1596 struct brcmf_fws_mac_descriptor
*entry
;
1597 enum brcmf_fws_skb_state state
;
1598 struct sk_buff
*pktout
;
1602 state
= brcmf_skbcb(skb
)->state
;
1603 entry
= brcmf_skbcb(skb
)->mac
;
1605 if (entry
!= NULL
) {
1606 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1607 /* wl-header is saved for suppressed packets */
1608 pktout
= brcmu_pktq_penq_head(&entry
->psq
, 2 * fifo
+ 1,
1610 if (pktout
== NULL
) {
1611 brcmf_err("suppress queue full\n");
1615 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1617 /* delay-q packets are going to delay-q */
1618 pktout
= brcmu_pktq_penq_head(&entry
->psq
,
1620 if (pktout
== NULL
) {
1621 brcmf_err("delay queue full\n");
1625 /* free the hanger slot */
1626 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &pktout
,
1629 /* decrement sequence count */
1633 brcmf_err("no mac entry linked\n");
1638 brcmf_fws_bustxfail(fws
, skb
);
1639 fws
->stats
.rollback_failed
++;
1641 fws
->stats
.rollback_success
++;
1642 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
1646 static int brcmf_fws_borrow_credit(struct brcmf_fws_info
*fws
)
1650 if (time_after(fws
->borrow_defer_timestamp
, jiffies
)) {
1651 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1655 for (lender_ac
= 0; lender_ac
<= BRCMF_FWS_FIFO_AC_VO
; lender_ac
++) {
1656 if (fws
->fifo_credit
[lender_ac
]) {
1657 fws
->credits_borrowed
[lender_ac
]++;
1658 fws
->fifo_credit
[lender_ac
]--;
1659 if (fws
->fifo_credit
[lender_ac
] == 0)
1660 fws
->fifo_credit_map
&= ~(1 << lender_ac
);
1661 fws
->fifo_credit_map
|= (1 << BRCMF_FWS_FIFO_AC_BE
);
1662 brcmf_dbg(DATA
, "borrow credit from: %d\n", lender_ac
);
1666 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1670 static int brcmf_fws_consume_credit(struct brcmf_fws_info
*fws
, int fifo
,
1671 struct sk_buff
*skb
)
1673 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1674 int *credit
= &fws
->fifo_credit
[fifo
];
1676 if (!brcmf_fws_macdesc_use_credit(entry
, skb
))
1679 if (fifo
!= BRCMF_FWS_FIFO_AC_BE
)
1680 fws
->borrow_defer_timestamp
= jiffies
+
1681 BRCMF_FWS_BORROW_DEFER_PERIOD
;
1684 /* Try to borrow a credit from other queue */
1685 if (fifo
== BRCMF_FWS_FIFO_AC_BE
&&
1686 brcmf_fws_borrow_credit(fws
) == 0)
1689 brcmf_dbg(DATA
, "exit: ac=%d, credits depleted\n", fifo
);
1694 fws
->fifo_credit_map
&= ~(1 << fifo
);
1695 brcmf_dbg(DATA
, "exit: ac=%d, credits=%d\n", fifo
, *credit
);
1699 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1700 struct sk_buff
*skb
)
1702 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1703 struct brcmf_fws_mac_descriptor
*entry
;
1704 struct brcmf_bus
*bus
= fws
->drvr
->bus_if
;
1710 return PTR_ERR(entry
);
1712 rc
= brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1714 fws
->stats
.generic_error
++;
1718 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1720 rc
= brcmf_bus_txdata(bus
, skb
);
1722 brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1726 entry
->transit_count
++;
1727 if (entry
->suppressed
)
1728 entry
->suppr_transit_count
++;
1730 fws
->stats
.pkt2bus
++;
1731 fws
->stats
.send_pkts
[fifo
]++;
1732 if (brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1733 fws
->stats
.fifo_credits_sent
[fifo
]++;
1738 brcmf_fws_rollback_toq(fws
, skb
, fifo
);
1742 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1744 struct brcmf_pub
*drvr
= ifp
->drvr
;
1745 struct brcmf_fws_info
*fws
= drvr
->fws
;
1746 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1747 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1749 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1750 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1752 /* determine the priority */
1754 skb
->priority
= cfg80211_classify8021d(skb
);
1756 drvr
->tx_multicast
+= !!multicast
;
1757 if (ntohs(eh
->h_proto
) == ETH_P_PAE
)
1758 atomic_inc(&ifp
->pend_8021x_cnt
);
1760 if (!brcmf_fws_fc_active(fws
)) {
1761 /* If the protocol uses a data header, apply it */
1762 brcmf_proto_hdrpush(drvr
, ifp
->ifidx
, 0, skb
);
1764 /* Use bus module to send data frame */
1765 return brcmf_bus_txdata(drvr
->bus_if
, skb
);
1768 /* set control buffer information */
1770 skcb
->mac
= brcmf_fws_find_mac_desc(fws
, ifp
, eh
->h_dest
);
1771 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1772 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1774 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1776 brcmf_dbg(DATA
, "%s mac %pM multi %d fifo %d\n", skcb
->mac
->name
,
1777 eh
->h_dest
, multicast
, fifo
);
1779 brcmf_fws_lock(drvr
, flags
);
1780 if (skcb
->mac
->suppressed
||
1781 fws
->bus_flow_blocked
||
1782 brcmf_fws_mac_desc_closed(fws
, skcb
->mac
, fifo
) ||
1783 brcmu_pktq_mlen(&skcb
->mac
->psq
, 3 << (fifo
* 2)) ||
1785 brcmf_fws_consume_credit(fws
, fifo
, skb
) < 0)) {
1786 /* enqueue the packet in delayQ */
1787 drvr
->fws
->fifo_delay_map
|= 1 << fifo
;
1788 brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1790 brcmf_fws_commit_skb(fws
, fifo
, skb
);
1792 brcmf_fws_unlock(drvr
, flags
);
1796 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1798 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1800 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1804 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1807 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1809 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1810 struct brcmf_fws_mac_descriptor
*entry
;
1812 if (!ifp
->ndev
|| !ifp
->drvr
->fw_signals
)
1815 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1816 ifp
->fws_desc
= entry
;
1817 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1818 brcmf_fws_macdesc_set_name(fws
, entry
);
1819 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1821 brcmf_dbg(TRACE
, "added %s\n", entry
->name
);
1824 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1826 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1832 brcmf_fws_lock(ifp
->drvr
, flags
);
1833 ifp
->fws_desc
= NULL
;
1834 brcmf_dbg(TRACE
, "deleting %s\n", entry
->name
);
1835 brcmf_fws_clear_mac_descriptor(entry
);
1836 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1837 brcmf_fws_unlock(ifp
->drvr
, flags
);
1840 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1842 struct brcmf_fws_info
*fws
;
1843 struct sk_buff
*skb
;
1847 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1849 brcmf_fws_lock(fws
->drvr
, flags
);
1850 for (fifo
= NL80211_NUM_ACS
; fifo
>= 0 && !fws
->bus_flow_blocked
;
1852 while (fws
->fifo_credit
[fifo
]) {
1853 skb
= brcmf_fws_deq(fws
, fifo
);
1856 if (brcmf_skbcb(skb
)->if_flags
&
1857 BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1858 fws
->fifo_credit
[fifo
]--;
1860 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1862 if (fws
->bus_flow_blocked
)
1865 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1866 (fws
->fifo_credit
[fifo
] == 0) &&
1867 (!fws
->bus_flow_blocked
)) {
1868 while (brcmf_fws_borrow_credit(fws
) == 0) {
1869 skb
= brcmf_fws_deq(fws
, fifo
);
1871 brcmf_fws_return_credits(fws
, fifo
, 1);
1874 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1876 if (fws
->bus_flow_blocked
)
1881 brcmf_fws_unlock(fws
->drvr
, flags
);
1884 int brcmf_fws_init(struct brcmf_pub
*drvr
)
1886 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
1889 if (!drvr
->fw_signals
)
1892 spin_lock_init(&drvr
->fws_spinlock
);
1894 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
1900 /* set linkage back */
1901 drvr
->fws
->drvr
= drvr
;
1902 drvr
->fws
->fcmode
= fcmode
;
1904 drvr
->fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
1905 if (drvr
->fws
->fws_wq
== NULL
) {
1906 brcmf_err("workqueue creation failed\n");
1910 INIT_WORK(&drvr
->fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
1912 /* enable firmware signalling if fcmode active */
1913 if (drvr
->fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
1914 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
1915 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
1916 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
;
1918 rc
= brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
1919 brcmf_fws_notify_credit_map
);
1921 brcmf_err("register credit map handler failed\n");
1925 /* setting the iovar may fail if feature is unsupported
1926 * so leave the rc as is so driver initialization can
1929 if (brcmf_fil_iovar_int_set(drvr
->iflist
[0], "tlv", tlv
)) {
1930 brcmf_err("failed to set bdcv2 tlv signaling\n");
1934 brcmf_fws_hanger_init(&drvr
->fws
->hanger
);
1935 brcmf_fws_init_mac_descriptor(&drvr
->fws
->desc
.other
, NULL
, 0);
1936 brcmf_fws_macdesc_set_name(drvr
->fws
, &drvr
->fws
->desc
.other
);
1937 brcmu_pktq_init(&drvr
->fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1940 /* create debugfs file for statistics */
1941 brcmf_debugfs_create_fws_stats(drvr
, &drvr
->fws
->stats
);
1943 brcmf_dbg(INFO
, "%s bdcv2 tlv signaling [%x]\n",
1944 drvr
->fw_signals
? "enabled" : "disabled", tlv
);
1948 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
1950 brcmf_fws_deinit(drvr
);
1954 void brcmf_fws_deinit(struct brcmf_pub
*drvr
)
1956 struct brcmf_fws_info
*fws
= drvr
->fws
;
1962 /* disable firmware signalling entirely
1963 * to avoid using the workqueue.
1965 drvr
->fw_signals
= false;
1967 if (drvr
->fws
->fws_wq
)
1968 destroy_workqueue(drvr
->fws
->fws_wq
);
1971 brcmf_fws_lock(drvr
, flags
);
1972 brcmf_fws_cleanup(fws
, -1);
1974 brcmf_fws_unlock(drvr
, flags
);
1976 /* free top structure */
1980 bool brcmf_fws_fc_active(struct brcmf_fws_info
*fws
)
1985 return fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
;
1988 void brcmf_fws_bustxfail(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1993 brcmf_fws_lock(fws
->drvr
, flags
);
1994 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_FW_TOSSED
,
1995 brcmf_skb_htod_tag_get_field(skb
, HSLOT
), 0);
1996 /* the packet never reached firmware so reclaim credit */
1997 if (fws
->fcmode
== BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1998 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1999 brcmf_fws_skb_pickup_credit(fws
, fifo
, skb
);
2001 brcmf_fws_unlock(fws
->drvr
, flags
);
2004 void brcmf_fws_bus_blocked(struct brcmf_pub
*drvr
, bool flow_blocked
)
2006 struct brcmf_fws_info
*fws
= drvr
->fws
;
2008 fws
->bus_flow_blocked
= flow_blocked
;
2010 brcmf_fws_schedule_deq(fws
);