2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/types.h>
17 #include <linux/module.h>
18 #include <linux/if_ether.h>
19 #include <linux/spinlock.h>
20 #include <linux/skbuff.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/err.h>
24 #include <linux/jiffies.h>
25 #include <net/cfg80211.h>
27 #include <brcmu_utils.h>
28 #include <brcmu_wifi.h>
30 #include "dhd_proto.h"
34 #include "fwil_types.h"
38 #include "wl_cfg80211.h"
41 * DOC: Firmware Signalling
43 * Firmware can send signals to host and vice versa, which are passed in the
44 * data packets using TLV based header. This signalling layer is on top of the
45 * BDC bus protocol layer.
49 * single definition for firmware-driver flow control tlv's.
51 * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
52 * A length value 0 indicates variable length tlv.
54 #define BRCMF_FWS_TLV_DEFLIST \
55 BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
56 BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
57 BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
58 BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
59 BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
60 BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
61 BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
62 BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
63 BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
64 BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
65 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
66 BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
67 BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
68 BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
69 BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
70 BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
71 BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
74 * enum brcmf_fws_tlv_type - definition of tlv identifiers.
76 #define BRCMF_FWS_TLV_DEF(name, id, len) \
77 BRCMF_FWS_TYPE_ ## name = id,
78 enum brcmf_fws_tlv_type
{
80 BRCMF_FWS_TYPE_INVALID
82 #undef BRCMF_FWS_TLV_DEF
85 * enum brcmf_fws_tlv_len - definition of tlv lengths.
87 #define BRCMF_FWS_TLV_DEF(name, id, len) \
88 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
89 enum brcmf_fws_tlv_len
{
92 #undef BRCMF_FWS_TLV_DEF
96 * brcmf_fws_tlv_names - array of tlv names.
98 #define BRCMF_FWS_TLV_DEF(name, id, len) \
101 enum brcmf_fws_tlv_type id
;
103 } brcmf_fws_tlv_names
[] = {
104 BRCMF_FWS_TLV_DEFLIST
106 #undef BRCMF_FWS_TLV_DEF
108 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
112 for (i
= 0; i
< ARRAY_SIZE(brcmf_fws_tlv_names
); i
++)
113 if (brcmf_fws_tlv_names
[i
].id
== id
)
114 return brcmf_fws_tlv_names
[i
].name
;
119 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
126 * flags used to enable tlv signalling from firmware.
128 #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
129 #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
130 #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
131 #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
132 #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
133 #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
134 #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
136 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
137 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
139 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
140 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
141 #define BRCMF_FWS_FLOWCONTROL_HIWATER 128
142 #define BRCMF_FWS_FLOWCONTROL_LOWATER 64
144 #define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
145 #define BRCMF_FWS_PSQ_LEN 256
147 #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
148 #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
150 #define BRCMF_FWS_RET_OK_NOSCHEDULE 0
151 #define BRCMF_FWS_RET_OK_SCHEDULE 1
154 * enum brcmf_fws_skb_state - indicates processing state of skb.
156 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
157 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
158 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
159 * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info.
161 enum brcmf_fws_skb_state
{
162 BRCMF_FWS_SKBSTATE_NEW
,
163 BRCMF_FWS_SKBSTATE_DELAYED
,
164 BRCMF_FWS_SKBSTATE_SUPPRESSED
,
165 BRCMF_FWS_SKBSTATE_TIM
169 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
171 * @if_flags: holds interface index and packet related flags.
172 * @htod: host to device packet identifier (used in PKTTAG tlv).
173 * @state: transmit state of the packet.
174 * @mac: descriptor related to destination for this packet.
176 * This information is stored in control buffer struct sk_buff::cb, which
177 * provides 48 bytes of storage so this structure should not exceed that.
179 struct brcmf_skbuff_cb
{
182 enum brcmf_fws_skb_state state
;
183 struct brcmf_fws_mac_descriptor
*mac
;
187 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
189 #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
192 * sk_buff control if flags
194 * b[11] - packet sent upon firmware request.
195 * b[10] - packet only contains signalling data.
196 * b[9] - packet is a tx packet.
197 * b[8] - packet used requested credit
198 * b[7] - interface in AP mode.
199 * b[3:0] - interface index.
201 #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
202 #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
203 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
204 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
205 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
206 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
207 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
208 #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
209 #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
210 #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
211 #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
212 #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
214 #define brcmf_skb_if_flags_set_field(skb, field, value) \
215 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
216 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
217 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
218 #define brcmf_skb_if_flags_get_field(skb, field) \
219 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
220 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
221 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
224 * sk_buff control packet identifier
226 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
228 * - Generated at the host (e.g. dhd)
229 * - Seen as a generic sequence number by firmware except for the flags field.
231 * Generation : b[31] => generation number for this packet [host->fw]
232 * OR, current generation number [fw->host]
233 * Flags : b[30:27] => command, status flags
234 * FIFO-AC : b[26:24] => AC-FIFO id
235 * h-slot : b[23:8] => hanger-slot
236 * freerun : b[7:0] => A free running counter
238 #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
239 #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
240 #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
241 #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
242 #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
243 #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
244 #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
245 #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
246 #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
247 #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
249 #define brcmf_skb_htod_tag_set_field(skb, field, value) \
250 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
251 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
252 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
253 #define brcmf_skb_htod_tag_get_field(skb, field) \
254 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
255 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
256 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
258 #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
259 #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
260 #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
261 #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
262 #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
263 #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
264 #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
265 #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
266 #define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
267 #define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
269 #define brcmf_txstatus_get_field(txs, field) \
270 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
271 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
273 /* How long to defer borrowing in jiffies */
274 #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
277 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
279 * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background.
280 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
281 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
282 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
283 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
284 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
285 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
286 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
288 enum brcmf_fws_fifo
{
289 BRCMF_FWS_FIFO_FIRST
,
290 BRCMF_FWS_FIFO_AC_BK
= BRCMF_FWS_FIFO_FIRST
,
291 BRCMF_FWS_FIFO_AC_BE
,
292 BRCMF_FWS_FIFO_AC_VI
,
293 BRCMF_FWS_FIFO_AC_VO
,
300 * enum brcmf_fws_txstatus - txstatus flag values.
302 * @BRCMF_FWS_TXSTATUS_DISCARD:
303 * host is free to discard the packet.
304 * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
305 * 802.11 core suppressed the packet.
306 * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
307 * firmware suppress the packet as device is already in PS mode.
308 * @BRCMF_FWS_TXSTATUS_FW_TOSSED:
309 * firmware tossed the packet.
310 * @BRCMF_FWS_TXSTATUS_HOST_TOSSED:
311 * host tossed the packet.
313 enum brcmf_fws_txstatus
{
314 BRCMF_FWS_TXSTATUS_DISCARD
,
315 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
,
316 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
,
317 BRCMF_FWS_TXSTATUS_FW_TOSSED
,
318 BRCMF_FWS_TXSTATUS_HOST_TOSSED
321 enum brcmf_fws_fcmode
{
322 BRCMF_FWS_FCMODE_NONE
,
323 BRCMF_FWS_FCMODE_IMPLIED_CREDIT
,
324 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
327 enum brcmf_fws_mac_desc_state
{
328 BRCMF_FWS_STATE_OPEN
= 1,
329 BRCMF_FWS_STATE_CLOSE
333 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
335 * @occupied: slot is in use.
336 * @mac_handle: handle for mac entry determined by firmware.
337 * @interface_id: interface index.
338 * @state: current state.
339 * @suppressed: mac entry is suppressed.
340 * @generation: generation bit.
341 * @ac_bitmap: ac queue bitmap.
342 * @requested_credit: credits requested by firmware.
343 * @ea: ethernet address.
344 * @seq: per-node free-running sequence.
345 * @psq: power-save queue.
346 * @transit_count: packet in transit to firmware.
348 struct brcmf_fws_mac_descriptor
{
360 u8 seq
[BRCMF_FWS_FIFO_COUNT
];
363 int suppr_transit_count
;
364 bool send_tim_signal
;
365 u8 traffic_pending_bmp
;
366 u8 traffic_lastreported_bmp
;
369 #define BRCMF_FWS_HANGER_MAXITEMS 1024
372 * enum brcmf_fws_hanger_item_state - state of hanger item.
374 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
375 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
376 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
378 enum brcmf_fws_hanger_item_state
{
379 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
380 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
381 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
386 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
388 * @state: entry is either free or occupied.
389 * @pkt: packet itself.
391 struct brcmf_fws_hanger_item
{
392 enum brcmf_fws_hanger_item_state state
;
397 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
399 * @pushed: packets pushed to await txstatus.
400 * @popped: packets popped upon handling txstatus.
401 * @failed_to_push: packets that could not be pushed.
402 * @failed_to_pop: packets that could not be popped.
403 * @failed_slotfind: packets for which failed to find an entry.
404 * @slot_pos: last returned item index for a free entry.
405 * @items: array of hanger items.
407 struct brcmf_fws_hanger
{
414 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
417 struct brcmf_fws_macdesc_table
{
418 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
419 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
420 struct brcmf_fws_mac_descriptor other
;
423 struct brcmf_fws_info
{
424 struct brcmf_pub
*drvr
;
425 struct brcmf_fws_stats stats
;
426 struct brcmf_fws_hanger hanger
;
427 enum brcmf_fws_fcmode fcmode
;
428 bool bcmc_credit_check
;
429 struct brcmf_fws_macdesc_table desc
;
430 struct workqueue_struct
*fws_wq
;
431 struct work_struct fws_dequeue_work
;
432 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
433 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
434 int credits_borrowed
[BRCMF_FWS_FIFO_AC_VO
+ 1];
435 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
438 unsigned long borrow_defer_timestamp
;
439 bool bus_flow_blocked
;
440 bool creditmap_received
;
444 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
446 static const int brcmf_fws_prio2fifo
[] = {
447 BRCMF_FWS_FIFO_AC_BE
,
448 BRCMF_FWS_FIFO_AC_BK
,
449 BRCMF_FWS_FIFO_AC_BK
,
450 BRCMF_FWS_FIFO_AC_BE
,
451 BRCMF_FWS_FIFO_AC_VI
,
452 BRCMF_FWS_FIFO_AC_VI
,
453 BRCMF_FWS_FIFO_AC_VO
,
458 module_param(fcmode
, int, S_IRUSR
);
459 MODULE_PARM_DESC(fcmode
, "mode of firmware signalled flow control");
461 #define BRCMF_FWS_TLV_DEF(name, id, len) \
462 case BRCMF_FWS_TYPE_ ## name: \
466 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
468 * @fws: firmware-signalling information.
469 * @id: identifier of the TLV.
471 * Return: the specified length for the given TLV; Otherwise -EINVAL.
473 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
474 enum brcmf_fws_tlv_type id
)
477 BRCMF_FWS_TLV_DEFLIST
479 fws
->stats
.tlv_invalid_type
++;
484 #undef BRCMF_FWS_TLV_DEF
486 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
488 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
489 return ifidx
== *(int *)arg
;
492 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
495 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
500 matchfn
= brcmf_fws_ifidx_match
;
501 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
502 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
504 brcmu_pkt_buf_free_skb(skb
);
505 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
510 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
514 memset(hanger
, 0, sizeof(*hanger
));
515 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
516 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
519 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
523 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
525 while (i
!= h
->slot_pos
) {
526 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
531 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
534 brcmf_err("all slots occupied\n");
535 h
->failed_slotfind
++;
536 i
= BRCMF_FWS_HANGER_MAXITEMS
;
541 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
542 struct sk_buff
*pkt
, u32 slot_id
)
544 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
547 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
548 brcmf_err("slot is not free\n");
553 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
554 h
->items
[slot_id
].pkt
= pkt
;
559 static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
560 u32 slot_id
, struct sk_buff
**pktout
,
563 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
566 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
567 brcmf_err("entry not in use\n");
572 *pktout
= h
->items
[slot_id
].pkt
;
574 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
575 h
->items
[slot_id
].pkt
= NULL
;
581 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
584 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
587 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
588 brcmf_err("entry not in use\n");
592 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
596 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
597 bool (*fn
)(struct sk_buff
*, void *),
600 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
603 enum brcmf_fws_hanger_item_state s
;
605 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
606 s
= h
->items
[i
].state
;
607 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
608 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
609 skb
= h
->items
[i
].pkt
;
610 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
611 /* suppress packets freed from psq */
612 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
613 brcmu_pkt_buf_free_skb(skb
);
615 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
621 static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info
*fws
,
622 struct brcmf_fws_mac_descriptor
*desc
)
624 if (desc
== &fws
->desc
.other
)
625 strlcpy(desc
->name
, "MAC-OTHER", sizeof(desc
->name
));
626 else if (desc
->mac_handle
)
627 scnprintf(desc
->name
, sizeof(desc
->name
), "MAC-%d:%d",
628 desc
->mac_handle
, desc
->interface_id
);
630 scnprintf(desc
->name
, sizeof(desc
->name
), "MACIF:%d",
634 static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor
*desc
,
638 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
640 desc
->state
= BRCMF_FWS_STATE_OPEN
;
641 desc
->requested_credit
= 0;
642 desc
->requested_packet
= 0;
643 /* depending on use may need ifp->bssidx instead */
644 desc
->interface_id
= ifidx
;
645 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
647 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
651 void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor
*desc
)
654 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
656 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
657 desc
->requested_credit
= 0;
658 desc
->requested_packet
= 0;
661 static struct brcmf_fws_mac_descriptor
*
662 brcmf_fws_macdesc_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
664 struct brcmf_fws_mac_descriptor
*entry
;
668 return ERR_PTR(-EINVAL
);
670 entry
= &fws
->desc
.nodes
[0];
671 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
672 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
677 return ERR_PTR(-ENOENT
);
680 static struct brcmf_fws_mac_descriptor
*
681 brcmf_fws_macdesc_find(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
, u8
*da
)
683 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
686 multicast
= is_multicast_ether_addr(da
);
688 /* Multicast destination, STA and P2P clients get the interface entry.
689 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
690 * have their own entry.
692 if (multicast
&& ifp
->fws_desc
) {
693 entry
= ifp
->fws_desc
;
697 entry
= brcmf_fws_macdesc_lookup(fws
, da
);
699 entry
= ifp
->fws_desc
;
705 static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info
*fws
,
706 struct brcmf_fws_mac_descriptor
*entry
,
709 struct brcmf_fws_mac_descriptor
*if_entry
;
712 /* for unique destination entries the related interface
715 if (entry
->mac_handle
) {
716 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
717 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
720 /* an entry is closed when the state is closed and
721 * the firmware did not request anything.
723 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
724 !entry
->requested_credit
&& !entry
->requested_packet
;
726 /* Or firmware does not allow traffic for given fifo */
727 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
730 static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info
*fws
,
731 struct brcmf_fws_mac_descriptor
*entry
,
734 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
735 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
736 entry
->occupied
= !!(entry
->psq
.len
);
740 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
741 bool (*fn
)(struct sk_buff
*, void *),
744 struct brcmf_fws_hanger_item
*hi
;
750 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
752 brcmf_dbg(TRACE
, "no txq to clean up\n");
756 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
757 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
759 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
760 hi
= &fws
->hanger
.items
[hslot
];
761 WARN_ON(skb
!= hi
->pkt
);
762 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
763 brcmu_pkt_buf_free_skb(skb
);
764 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
769 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
772 struct brcmf_fws_mac_descriptor
*table
;
773 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
779 matchfn
= brcmf_fws_ifidx_match
;
781 /* cleanup individual nodes */
782 table
= &fws
->desc
.nodes
[0];
783 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
784 brcmf_fws_macdesc_cleanup(fws
, &table
[i
], ifidx
);
786 brcmf_fws_macdesc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
787 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
788 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
791 static int brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
793 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
797 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
799 brcmf_dbg(TRACE
, "enter: %s, idx=%d pkttag=0x%08X, hslot=%d\n",
800 entry
->name
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
801 le32_to_cpu(pkttag
), (le32_to_cpu(pkttag
) >> 8) & 0xffff);
802 if (entry
->send_tim_signal
)
803 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
805 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
806 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
807 fillers
= round_up(data_offset
, 4) - data_offset
;
808 data_offset
+= fillers
;
810 skb_push(skb
, data_offset
);
813 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
814 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
815 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
816 wlh
+= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2;
818 if (entry
->send_tim_signal
) {
819 entry
->send_tim_signal
= 0;
820 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
821 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
822 wlh
[2] = entry
->mac_handle
;
823 wlh
[3] = entry
->traffic_pending_bmp
;
824 brcmf_dbg(TRACE
, "adding TIM info: handle %d bmp 0x%X\n",
825 entry
->mac_handle
, entry
->traffic_pending_bmp
);
826 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
827 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
830 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
832 brcmf_proto_hdrpush(fws
->drvr
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
833 data_offset
>> 2, skb
);
837 static bool brcmf_fws_tim_update(struct brcmf_fws_info
*fws
,
838 struct brcmf_fws_mac_descriptor
*entry
,
839 int fifo
, bool send_immediately
)
842 struct brcmf_bus
*bus
;
843 struct brcmf_skbuff_cb
*skcb
;
847 /* check delayedQ and suppressQ in one call using bitmap */
848 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (fifo
* 2)) == 0)
849 entry
->traffic_pending_bmp
&= ~NBITVAL(fifo
);
851 entry
->traffic_pending_bmp
|= NBITVAL(fifo
);
853 entry
->send_tim_signal
= false;
854 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
855 entry
->send_tim_signal
= true;
856 if (send_immediately
&& entry
->send_tim_signal
&&
857 entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
858 /* create a dummy packet and sent that. The traffic */
859 /* bitmap info will automatically be attached to that packet */
860 len
= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2 +
861 BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2 +
862 4 + fws
->drvr
->hdrlen
;
863 skb
= brcmu_pkt_buf_get_skb(len
);
867 skcb
= brcmf_skbcb(skb
);
869 skcb
->state
= BRCMF_FWS_SKBSTATE_TIM
;
870 bus
= fws
->drvr
->bus_if
;
871 err
= brcmf_fws_hdrpush(fws
, skb
);
873 err
= brcmf_bus_txdata(bus
, skb
);
875 brcmu_pkt_buf_free_skb(skb
);
882 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
885 struct brcmf_if
*ifp
= fws
->drvr
->iflist
[!if_id
? 0 : if_id
+ 1];
890 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
891 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
892 brcmf_txflowblock_if(ifp
,
893 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
894 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
895 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
) {
896 fws
->stats
.fws_flow_block
++;
897 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
902 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
904 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
908 /* using macro so sparse checking does not complain
909 * about locking imbalance.
911 #define brcmf_fws_lock(drvr, flags) \
914 spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
917 /* using macro so sparse checking does not complain
918 * about locking imbalance.
920 #define brcmf_fws_unlock(drvr, flags) \
921 spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
924 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
926 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
932 mac_handle
= *data
++;
936 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
937 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
938 if (entry
->occupied
) {
939 brcmf_dbg(TRACE
, "deleting %s mac %pM\n",
941 brcmf_fws_lock(fws
->drvr
, flags
);
942 brcmf_fws_macdesc_cleanup(fws
, entry
, -1);
943 brcmf_fws_macdesc_deinit(entry
);
944 brcmf_fws_unlock(fws
->drvr
, flags
);
946 fws
->stats
.mac_update_failed
++;
950 existing
= brcmf_fws_macdesc_lookup(fws
, addr
);
951 if (IS_ERR(existing
)) {
952 if (!entry
->occupied
) {
953 brcmf_fws_lock(fws
->drvr
, flags
);
954 entry
->mac_handle
= mac_handle
;
955 brcmf_fws_macdesc_init(entry
, addr
, ifidx
);
956 brcmf_fws_macdesc_set_name(fws
, entry
);
957 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
959 brcmf_fws_unlock(fws
->drvr
, flags
);
960 brcmf_dbg(TRACE
, "add %s mac %pM\n", entry
->name
, addr
);
962 fws
->stats
.mac_update_failed
++;
965 if (entry
!= existing
) {
966 brcmf_dbg(TRACE
, "copy mac %s\n", existing
->name
);
967 brcmf_fws_lock(fws
->drvr
, flags
);
968 memcpy(entry
, existing
,
969 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
970 entry
->mac_handle
= mac_handle
;
971 brcmf_fws_macdesc_deinit(existing
);
972 brcmf_fws_macdesc_set_name(fws
, entry
);
973 brcmf_fws_unlock(fws
->drvr
, flags
);
974 brcmf_dbg(TRACE
, "relocate %s mac %pM\n", entry
->name
,
977 brcmf_dbg(TRACE
, "use existing\n");
978 WARN_ON(entry
->mac_handle
!= mac_handle
);
979 /* TODO: what should we do here: continue, reinit, .. */
985 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
988 struct brcmf_fws_mac_descriptor
*entry
;
993 mac_handle
= data
[0];
994 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
995 if (!entry
->occupied
) {
996 fws
->stats
.mac_ps_update_failed
++;
999 brcmf_fws_lock(fws
->drvr
, flags
);
1000 /* a state update should wipe old credits */
1001 entry
->requested_credit
= 0;
1002 entry
->requested_packet
= 0;
1003 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
1004 entry
->state
= BRCMF_FWS_STATE_OPEN
;
1005 ret
= BRCMF_FWS_RET_OK_SCHEDULE
;
1007 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
1008 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BK
, false);
1009 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_BE
, false);
1010 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VI
, false);
1011 brcmf_fws_tim_update(fws
, entry
, BRCMF_FWS_FIFO_AC_VO
, true);
1012 ret
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1014 brcmf_fws_unlock(fws
->drvr
, flags
);
1018 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
1021 struct brcmf_fws_mac_descriptor
*entry
;
1028 if (ifidx
>= BRCMF_MAX_IFS
) {
1033 entry
= &fws
->desc
.iface
[ifidx
];
1034 if (!entry
->occupied
) {
1039 brcmf_dbg(TRACE
, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type
), type
,
1041 brcmf_fws_lock(fws
->drvr
, flags
);
1043 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1044 entry
->state
= BRCMF_FWS_STATE_OPEN
;
1045 ret
= BRCMF_FWS_RET_OK_SCHEDULE
;
1047 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1048 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
1049 ret
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1053 brcmf_fws_unlock(fws
->drvr
, flags
);
1056 brcmf_fws_unlock(fws
->drvr
, flags
);
1060 fws
->stats
.if_update_failed
++;
1064 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
1067 struct brcmf_fws_mac_descriptor
*entry
;
1070 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
1071 if (!entry
->occupied
) {
1072 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1073 fws
->stats
.credit_request_failed
++;
1075 fws
->stats
.packet_request_failed
++;
1079 brcmf_dbg(TRACE
, "%s (%d): %s cnt %d bmp %d\n",
1080 brcmf_fws_get_tlv_name(type
), type
, entry
->name
,
1082 brcmf_fws_lock(fws
->drvr
, flags
);
1083 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
1084 entry
->requested_credit
= data
[0];
1086 entry
->requested_packet
= data
[0];
1088 entry
->ac_bitmap
= data
[2];
1089 brcmf_fws_unlock(fws
->drvr
, flags
);
1090 return BRCMF_FWS_RET_OK_SCHEDULE
;
1094 brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor
*entry
,
1095 struct sk_buff
*skb
)
1097 if (entry
->requested_credit
> 0) {
1098 entry
->requested_credit
--;
1099 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1100 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 1);
1101 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1102 brcmf_err("requested credit set while mac not closed!\n");
1103 } else if (entry
->requested_packet
> 0) {
1104 entry
->requested_packet
--;
1105 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1106 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1107 if (entry
->state
!= BRCMF_FWS_STATE_CLOSE
)
1108 brcmf_err("requested packet set while mac not closed!\n");
1110 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 0);
1111 brcmf_skb_if_flags_set_field(skb
, REQ_CREDIT
, 0);
1115 static void brcmf_fws_macdesc_return_req_credit(struct sk_buff
*skb
)
1117 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1119 if ((brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) &&
1120 (entry
->state
== BRCMF_FWS_STATE_CLOSE
))
1121 entry
->requested_credit
++;
1124 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1125 u8 fifo
, u8 credits
)
1134 fws
->fifo_credit_map
|= 1 << fifo
;
1136 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1137 (fws
->credits_borrowed
[0])) {
1138 for (lender_ac
= BRCMF_FWS_FIFO_AC_VO
; lender_ac
>= 0;
1140 borrowed
= &fws
->credits_borrowed
[lender_ac
];
1142 fws
->fifo_credit_map
|= (1 << lender_ac
);
1143 fifo_credit
= &fws
->fifo_credit
[lender_ac
];
1144 if (*borrowed
>= credits
) {
1145 *borrowed
-= credits
;
1146 *fifo_credit
+= credits
;
1149 credits
-= *borrowed
;
1150 *fifo_credit
+= *borrowed
;
1157 fws
->fifo_credit
[fifo
] += credits
;
1160 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1162 /* only schedule dequeue when there are credits for delayed traffic */
1163 if (fws
->fifo_credit_map
& fws
->fifo_delay_map
)
1164 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1167 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1168 enum brcmf_fws_skb_state state
, int fifo
,
1171 int prec
= 2 * fifo
;
1172 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1174 struct brcmf_fws_mac_descriptor
*entry
;
1176 entry
= brcmf_skbcb(p
)->mac
;
1177 if (entry
== NULL
) {
1178 brcmf_err("no mac descriptor found for skb %p\n", p
);
1182 brcmf_dbg(DATA
, "enter: fifo %d skb %p\n", fifo
, p
);
1183 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1185 qfull_stat
= &fws
->stats
.supprq_full_error
;
1188 if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1193 /* increment total enqueued packet count */
1194 fws
->fifo_delay_map
|= 1 << fifo
;
1195 fws
->fifo_enqpkt
[fifo
]++;
1197 /* update the sk_buff state */
1198 brcmf_skbcb(p
)->state
= state
;
1201 * A packet has been pushed so update traffic
1202 * availability bitmap, if applicable
1204 brcmf_fws_tim_update(fws
, entry
, fifo
, true);
1205 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1206 brcmf_skb_if_flags_get_field(p
, INDEX
));
1210 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1212 struct brcmf_fws_mac_descriptor
*table
;
1213 struct brcmf_fws_mac_descriptor
*entry
;
1221 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1222 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1223 node_pos
= fws
->deq_node_pos
[fifo
];
1225 for (i
= 0; i
< num_nodes
; i
++) {
1226 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1227 if (!entry
->occupied
||
1228 brcmf_fws_macdesc_closed(fws
, entry
, fifo
))
1231 if (entry
->suppressed
)
1235 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1237 if (entry
->suppressed
) {
1238 if (entry
->suppr_transit_count
)
1240 entry
->suppressed
= false;
1241 p
= brcmu_pktq_mdeq(&entry
->psq
,
1242 1 << (fifo
* 2), &prec_out
);
1248 brcmf_fws_macdesc_use_req_credit(entry
, p
);
1250 /* move dequeue position to ensure fair round-robin */
1251 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1252 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1253 brcmf_skb_if_flags_get_field(p
,
1257 * A packet has been picked up, update traffic
1258 * availability bitmap, if applicable
1260 brcmf_fws_tim_update(fws
, entry
, fifo
, false);
1263 * decrement total enqueued fifo packets and
1264 * clear delay bitmap if done.
1266 fws
->fifo_enqpkt
[fifo
]--;
1267 if (fws
->fifo_enqpkt
[fifo
] == 0)
1268 fws
->fifo_delay_map
&= ~(1 << fifo
);
1273 brcmf_dbg(DATA
, "exit: fifo %d skb %p\n", fifo
, p
);
1277 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1278 struct sk_buff
*skb
, u32 genbit
)
1280 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1285 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1287 /* this packet was suppressed */
1288 if (!entry
->suppressed
) {
1289 entry
->suppressed
= true;
1290 entry
->suppr_transit_count
= entry
->transit_count
;
1291 brcmf_dbg(DATA
, "suppress %s: transit %d\n",
1292 entry
->name
, entry
->transit_count
);
1295 entry
->generation
= genbit
;
1297 ret
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1299 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
,
1302 /* suppress q is full or hdrpull failed, drop this packet */
1303 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1307 * Mark suppressed to avoid a double free during
1310 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
);
1317 brcmf_fws_txs_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1322 bool remove_from_hanger
= true;
1323 struct sk_buff
*skb
;
1324 struct brcmf_skbuff_cb
*skcb
;
1325 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1327 brcmf_dbg(DATA
, "flags %d\n", flags
);
1329 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1330 fws
->stats
.txs_discard
++;
1331 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1332 fws
->stats
.txs_supp_core
++;
1333 remove_from_hanger
= false;
1334 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1335 fws
->stats
.txs_supp_ps
++;
1336 remove_from_hanger
= false;
1337 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1338 fws
->stats
.txs_tossed
++;
1339 else if (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)
1340 fws
->stats
.txs_host_tossed
++;
1342 brcmf_err("unexpected txstatus\n");
1344 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1345 remove_from_hanger
);
1347 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1351 skcb
= brcmf_skbcb(skb
);
1353 if (WARN_ON(!entry
)) {
1354 brcmu_pkt_buf_free_skb(skb
);
1357 entry
->transit_count
--;
1358 if (entry
->suppressed
&& entry
->suppr_transit_count
)
1359 entry
->suppr_transit_count
--;
1361 brcmf_dbg(DATA
, "%s flags %X htod %X\n", entry
->name
, skcb
->if_flags
,
1364 /* pick up the implicit credit from this packet */
1365 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1366 if ((fws
->fcmode
== BRCMF_FWS_FCMODE_IMPLIED_CREDIT
) ||
1367 (brcmf_skb_if_flags_get_field(skb
, REQ_CREDIT
)) ||
1368 (flags
== BRCMF_FWS_TXSTATUS_HOST_TOSSED
)) {
1369 brcmf_fws_return_credits(fws
, fifo
, 1);
1370 brcmf_fws_schedule_deq(fws
);
1372 brcmf_fws_macdesc_return_req_credit(skb
);
1374 if (!remove_from_hanger
)
1375 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
, genbit
);
1377 if (remove_from_hanger
|| ret
)
1378 brcmf_txfinalize(fws
->drvr
, skb
, true);
1383 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1389 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1390 brcmf_dbg(INFO
, "ignored\n");
1391 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1394 brcmf_dbg(DATA
, "enter: data %pM\n", data
);
1395 brcmf_fws_lock(fws
->drvr
, flags
);
1396 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1397 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1399 brcmf_dbg(DATA
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1400 fws
->fifo_delay_map
);
1401 brcmf_fws_unlock(fws
->drvr
, flags
);
1402 return BRCMF_FWS_RET_OK_SCHEDULE
;
1405 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1414 fws
->stats
.txs_indicate
++;
1415 memcpy(&status_le
, data
, sizeof(status_le
));
1416 status
= le32_to_cpu(status_le
);
1417 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1418 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1419 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1421 brcmf_fws_lock(fws
->drvr
, lflags
);
1422 brcmf_fws_txs_process(fws
, flags
, hslot
, genbit
);
1423 brcmf_fws_unlock(fws
->drvr
, lflags
);
1424 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1427 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1431 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1432 brcmf_dbg(CTL
, "received: seq %d, timestamp %d\n", data
[1],
1433 le32_to_cpu(timestamp
));
1437 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1438 const struct brcmf_event_msg
*e
,
1441 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1446 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1447 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1450 if (fws
->creditmap_received
)
1453 fws
->creditmap_received
= true;
1455 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1456 brcmf_fws_lock(ifp
->drvr
, flags
);
1457 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1459 fws
->fifo_credit_map
|= 1 << i
;
1461 fws
->fifo_credit_map
&= ~(1 << i
);
1462 fws
->fifo_credit
[i
] = *credits
++;
1464 brcmf_fws_schedule_deq(fws
);
1465 brcmf_fws_unlock(ifp
->drvr
, flags
);
1469 static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if
*ifp
,
1470 const struct brcmf_event_msg
*e
,
1473 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1476 brcmf_fws_lock(ifp
->drvr
, flags
);
1478 fws
->bcmc_credit_check
= true;
1479 brcmf_fws_unlock(ifp
->drvr
, flags
);
1483 int brcmf_fws_hdrpull(struct brcmf_pub
*drvr
, int ifidx
, s16 signal_len
,
1484 struct sk_buff
*skb
)
1486 struct brcmf_fws_info
*fws
= drvr
->fws
;
1495 brcmf_dbg(HDRS
, "enter: ifidx %d, skblen %u, sig %d\n",
1496 ifidx
, skb
->len
, signal_len
);
1498 WARN_ON(signal_len
> skb
->len
);
1500 /* if flow control disabled, skip to packet data and leave */
1501 if (!signal_len
|| !drvr
->fw_signals
) {
1502 skb_pull(skb
, signal_len
);
1506 fws
->stats
.header_pulls
++;
1507 data_len
= signal_len
;
1508 signal_data
= skb
->data
;
1510 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1511 while (data_len
> 0) {
1512 /* extract tlv info */
1513 type
= signal_data
[0];
1515 /* FILLER type is actually not a TLV, but
1516 * a single byte that can be skipped.
1518 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1523 len
= signal_data
[1];
1524 data
= signal_data
+ 2;
1526 brcmf_dbg(HDRS
, "tlv type=%s (%d), len=%d (%d)\n",
1527 brcmf_fws_get_tlv_name(type
), type
, len
,
1528 brcmf_fws_get_tlv_len(fws
, type
));
1530 /* abort parsing when length invalid */
1531 if (data_len
< len
+ 2)
1534 if (len
< brcmf_fws_get_tlv_len(fws
, type
))
1537 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1539 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1540 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1542 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1543 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1544 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1546 case BRCMF_FWS_TYPE_MAC_OPEN
:
1547 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1548 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1550 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1551 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1552 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1555 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1556 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1557 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1559 case BRCMF_FWS_TYPE_TXSTATUS
:
1560 brcmf_fws_txstatus_indicate(fws
, data
);
1562 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1563 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1565 case BRCMF_FWS_TYPE_RSSI
:
1566 brcmf_fws_rssi_indicate(fws
, *data
);
1568 case BRCMF_FWS_TYPE_TRANS_ID
:
1569 brcmf_fws_dbg_seqnum_check(fws
, data
);
1571 case BRCMF_FWS_TYPE_PKTTAG
:
1572 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1574 fws
->stats
.tlv_invalid_type
++;
1577 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1578 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1579 signal_data
+= len
+ 2;
1580 data_len
-= len
+ 2;
1584 fws
->stats
.tlv_parse_failed
++;
1586 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1587 brcmf_fws_schedule_deq(fws
);
1589 /* signalling processing result does
1590 * not affect the actual ethernet packet.
1592 skb_pull(skb
, signal_len
);
1594 /* this may be a signal-only packet
1597 fws
->stats
.header_only_pkt
++;
1602 static void brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1605 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1606 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1609 brcmf_skb_if_flags_set_field(p
, TRANSMIT
, 1);
1610 brcmf_skb_htod_tag_set_field(p
, GENERATION
, entry
->generation
);
1611 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1612 if (brcmf_skb_if_flags_get_field(p
, REQUESTED
)) {
1614 * Indicate that this packet is being sent in response to an
1615 * explicit request from the firmware side.
1617 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1619 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1620 brcmf_fws_hdrpush(fws
, p
);
1623 static void brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
,
1624 struct sk_buff
*skb
, int fifo
)
1626 struct brcmf_fws_mac_descriptor
*entry
;
1627 struct sk_buff
*pktout
;
1631 entry
= brcmf_skbcb(skb
)->mac
;
1632 if (entry
->occupied
) {
1634 if (brcmf_skbcb(skb
)->state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
)
1637 pktout
= brcmu_pktq_penq_head(&entry
->psq
, qidx
, skb
);
1638 if (pktout
== NULL
) {
1639 brcmf_err("%s queue %d full\n", entry
->name
, qidx
);
1643 brcmf_err("%s entry removed\n", entry
->name
);
1648 fws
->stats
.rollback_failed
++;
1649 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1650 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
,
1653 fws
->stats
.rollback_success
++;
1654 brcmf_fws_return_credits(fws
, fifo
, 1);
1655 brcmf_fws_macdesc_return_req_credit(skb
);
1659 static int brcmf_fws_borrow_credit(struct brcmf_fws_info
*fws
)
1663 if (time_after(fws
->borrow_defer_timestamp
, jiffies
)) {
1664 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1668 for (lender_ac
= 0; lender_ac
<= BRCMF_FWS_FIFO_AC_VO
; lender_ac
++) {
1669 if (fws
->fifo_credit
[lender_ac
]) {
1670 fws
->credits_borrowed
[lender_ac
]++;
1671 fws
->fifo_credit
[lender_ac
]--;
1672 if (fws
->fifo_credit
[lender_ac
] == 0)
1673 fws
->fifo_credit_map
&= ~(1 << lender_ac
);
1674 fws
->fifo_credit_map
|= (1 << BRCMF_FWS_FIFO_AC_BE
);
1675 brcmf_dbg(DATA
, "borrow credit from: %d\n", lender_ac
);
1679 fws
->fifo_credit_map
&= ~(1 << BRCMF_FWS_FIFO_AC_BE
);
1683 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1684 struct sk_buff
*skb
)
1686 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1687 struct brcmf_fws_mac_descriptor
*entry
;
1688 struct brcmf_bus
*bus
= fws
->drvr
->bus_if
;
1694 return PTR_ERR(entry
);
1696 brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1697 rc
= brcmf_bus_txdata(bus
, skb
);
1698 brcmf_dbg(DATA
, "%s flags %X htod %X bus_tx %d\n", entry
->name
,
1699 skcb
->if_flags
, skcb
->htod
, rc
);
1701 brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1705 entry
->transit_count
++;
1706 if (entry
->suppressed
)
1707 entry
->suppr_transit_count
++;
1708 fws
->stats
.pkt2bus
++;
1709 fws
->stats
.send_pkts
[fifo
]++;
1710 if (brcmf_skb_if_flags_get_field(skb
, REQUESTED
))
1711 fws
->stats
.requested_sent
[fifo
]++;
1716 brcmf_fws_rollback_toq(fws
, skb
, fifo
);
1720 static int brcmf_fws_assign_htod(struct brcmf_fws_info
*fws
, struct sk_buff
*p
,
1723 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1726 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1727 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1728 brcmf_skb_htod_tag_set_field(p
, FREERUN
, skcb
->mac
->seq
[fifo
]);
1729 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1730 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1732 skcb
->mac
->seq
[fifo
]++;
1734 fws
->stats
.generic_error
++;
1738 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1740 struct brcmf_pub
*drvr
= ifp
->drvr
;
1741 struct brcmf_fws_info
*fws
= drvr
->fws
;
1742 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1743 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1745 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1746 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1748 /* determine the priority */
1750 skb
->priority
= cfg80211_classify8021d(skb
);
1752 drvr
->tx_multicast
+= !!multicast
;
1753 if (ntohs(eh
->h_proto
) == ETH_P_PAE
)
1754 atomic_inc(&ifp
->pend_8021x_cnt
);
1756 if (!brcmf_fws_fc_active(fws
)) {
1757 /* If the protocol uses a data header, apply it */
1758 brcmf_proto_hdrpush(drvr
, ifp
->ifidx
, 0, skb
);
1760 /* Use bus module to send data frame */
1761 return brcmf_bus_txdata(drvr
->bus_if
, skb
);
1764 /* set control buffer information */
1766 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1767 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1769 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1771 brcmf_fws_lock(drvr
, flags
);
1772 if (fifo
!= BRCMF_FWS_FIFO_AC_BE
&& fifo
< BRCMF_FWS_FIFO_BCMC
)
1773 fws
->borrow_defer_timestamp
= jiffies
+
1774 BRCMF_FWS_BORROW_DEFER_PERIOD
;
1776 skcb
->mac
= brcmf_fws_macdesc_find(fws
, ifp
, eh
->h_dest
);
1777 brcmf_dbg(DATA
, "%s mac %pM multi %d fifo %d\n", skcb
->mac
->name
,
1778 eh
->h_dest
, multicast
, fifo
);
1779 if (!brcmf_fws_assign_htod(fws
, skb
, fifo
)) {
1780 brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1781 brcmf_fws_schedule_deq(fws
);
1783 brcmf_err("drop skb: no hanger slot\n");
1784 brcmu_pkt_buf_free_skb(skb
);
1786 brcmf_fws_unlock(drvr
, flags
);
1790 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1792 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1794 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1798 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1801 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1803 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1804 struct brcmf_fws_mac_descriptor
*entry
;
1806 if (!ifp
->ndev
|| !ifp
->drvr
->fw_signals
)
1809 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1810 ifp
->fws_desc
= entry
;
1811 brcmf_fws_macdesc_init(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1812 brcmf_fws_macdesc_set_name(fws
, entry
);
1813 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1815 brcmf_dbg(TRACE
, "added %s\n", entry
->name
);
1818 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1820 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1826 brcmf_fws_lock(ifp
->drvr
, flags
);
1827 ifp
->fws_desc
= NULL
;
1828 brcmf_dbg(TRACE
, "deleting %s\n", entry
->name
);
1829 brcmf_fws_macdesc_deinit(entry
);
1830 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1831 brcmf_fws_unlock(ifp
->drvr
, flags
);
1834 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1836 struct brcmf_fws_info
*fws
;
1837 struct sk_buff
*skb
;
1841 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1843 brcmf_fws_lock(fws
->drvr
, flags
);
1844 for (fifo
= BRCMF_FWS_FIFO_BCMC
; fifo
>= 0 && !fws
->bus_flow_blocked
;
1846 while ((fws
->fifo_credit
[fifo
]) || ((!fws
->bcmc_credit_check
) &&
1847 (fifo
== BRCMF_FWS_FIFO_BCMC
))) {
1848 skb
= brcmf_fws_deq(fws
, fifo
);
1851 fws
->fifo_credit
[fifo
]--;
1852 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1854 if (fws
->bus_flow_blocked
)
1857 if ((fifo
== BRCMF_FWS_FIFO_AC_BE
) &&
1858 (fws
->fifo_credit
[fifo
] == 0) &&
1859 (!fws
->bus_flow_blocked
)) {
1860 while (brcmf_fws_borrow_credit(fws
) == 0) {
1861 skb
= brcmf_fws_deq(fws
, fifo
);
1863 brcmf_fws_return_credits(fws
, fifo
, 1);
1866 if (brcmf_fws_commit_skb(fws
, fifo
, skb
))
1868 if (fws
->bus_flow_blocked
)
1873 brcmf_fws_unlock(fws
->drvr
, flags
);
1876 int brcmf_fws_init(struct brcmf_pub
*drvr
)
1878 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
1881 if (!drvr
->fw_signals
)
1884 spin_lock_init(&drvr
->fws_spinlock
);
1886 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
1892 /* set linkage back */
1893 drvr
->fws
->drvr
= drvr
;
1894 drvr
->fws
->fcmode
= fcmode
;
1896 drvr
->fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
1897 if (drvr
->fws
->fws_wq
== NULL
) {
1898 brcmf_err("workqueue creation failed\n");
1902 INIT_WORK(&drvr
->fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
1904 /* enable firmware signalling if fcmode active */
1905 if (drvr
->fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
1906 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
1907 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
1908 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
;
1910 rc
= brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
1911 brcmf_fws_notify_credit_map
);
1913 brcmf_err("register credit map handler failed\n");
1916 rc
= brcmf_fweh_register(drvr
, BRCMF_E_BCMC_CREDIT_SUPPORT
,
1917 brcmf_fws_notify_bcmc_credit_support
);
1919 brcmf_err("register bcmc credit handler failed\n");
1920 brcmf_fweh_unregister(drvr
, BRCMF_E_FIFO_CREDIT_MAP
);
1924 /* setting the iovar may fail if feature is unsupported
1925 * so leave the rc as is so driver initialization can
1928 if (brcmf_fil_iovar_int_set(drvr
->iflist
[0], "tlv", tlv
)) {
1929 brcmf_err("failed to set bdcv2 tlv signaling\n");
1933 brcmf_fws_hanger_init(&drvr
->fws
->hanger
);
1934 brcmf_fws_macdesc_init(&drvr
->fws
->desc
.other
, NULL
, 0);
1935 brcmf_fws_macdesc_set_name(drvr
->fws
, &drvr
->fws
->desc
.other
);
1936 brcmu_pktq_init(&drvr
->fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1939 /* create debugfs file for statistics */
1940 brcmf_debugfs_create_fws_stats(drvr
, &drvr
->fws
->stats
);
1942 brcmf_dbg(INFO
, "%s bdcv2 tlv signaling [%x]\n",
1943 drvr
->fw_signals
? "enabled" : "disabled", tlv
);
1947 brcmf_fweh_unregister(drvr
, BRCMF_E_BCMC_CREDIT_SUPPORT
);
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 if (brcmf_skbcb(skb
)->state
== BRCMF_FWS_SKBSTATE_TIM
) {
1994 brcmu_pkt_buf_free_skb(skb
);
1997 brcmf_fws_lock(fws
->drvr
, flags
);
1998 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1999 brcmf_fws_txs_process(fws
, BRCMF_FWS_TXSTATUS_HOST_TOSSED
, hslot
, 0);
2000 brcmf_fws_unlock(fws
->drvr
, flags
);
2003 void brcmf_fws_bus_blocked(struct brcmf_pub
*drvr
, bool flow_blocked
)
2005 struct brcmf_fws_info
*fws
= drvr
->fws
;
2007 fws
->bus_flow_blocked
= flow_blocked
;
2009 brcmf_fws_schedule_deq(fws
);
2011 fws
->stats
.bus_flow_block
++;