]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
drivers: add explicit interrupt.h includes
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / fwsignal.c
CommitLineData
349e7104
AS		 1/*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
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.
7 *
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.
15 */
16#include <linux/types.h>
c7f34a69 17#include <linux/module.h>
349e7104
AS		 18#include <linux/if_ether.h>
19#include <linux/spinlock.h>
20#include <linux/skbuff.h>
21#include <linux/netdevice.h>
3edc1cff 22#include <linux/etherdevice.h>
349e7104 23#include <linux/err.h>
1aac1e91 24#include <linux/jiffies.h>
3edc1cff 25#include <net/cfg80211.h>
349e7104
AS		 26
27#include <brcmu_utils.h>
28#include <brcmu_wifi.h>
122d3d04 29#include "core.h"
a8e8ed34 30#include "debug.h"
d14f78b9 31#include "bus.h"
349e7104 32#include "fwil.h"
a7965fbb 33#include "fwil_types.h"
349e7104
AS		 34#include "fweh.h"
35#include "fwsignal.h"
a7965fbb 36#include "p2p.h"
bfe81975 37#include "cfg80211.h"
85b84133 38#include "proto.h"
7d34b056 39#include "common.h"
349e7104
AS		 40
41/**
42 * DOC: Firmware Signalling
43 *
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.
47 */
48
49/*
50 * single definition for firmware-driver flow control tlv's.
51 *
52 * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
53 * A length value 0 indicates variable length tlv.
54 */
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) \
94607238 66 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
349e7104
AS		 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)
73
3edc1cff 74/*
349e7104
AS		 75 * enum brcmf_fws_tlv_type - definition of tlv identifiers.
76 */
77#define BRCMF_FWS_TLV_DEF(name, id, len) \
78 BRCMF_FWS_TYPE_ ## name = id,
79enum brcmf_fws_tlv_type {
80 BRCMF_FWS_TLV_DEFLIST
81 BRCMF_FWS_TYPE_INVALID
82};
83#undef BRCMF_FWS_TLV_DEF
84
3edc1cff
AS		 85/*
86 * enum brcmf_fws_tlv_len - definition of tlv lengths.
87 */
88#define BRCMF_FWS_TLV_DEF(name, id, len) \
89 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
90enum brcmf_fws_tlv_len {
91 BRCMF_FWS_TLV_DEFLIST
92};
93#undef BRCMF_FWS_TLV_DEF
94
bbd1f932
AS		 95/* AMPDU rx reordering definitions */
96#define BRCMF_RXREORDER_FLOWID_OFFSET 0
97#define BRCMF_RXREORDER_MAXIDX_OFFSET 2
98#define BRCMF_RXREORDER_FLAGS_OFFSET 4
99#define BRCMF_RXREORDER_CURIDX_OFFSET 6
100#define BRCMF_RXREORDER_EXPIDX_OFFSET 8
101
102#define BRCMF_RXREORDER_DEL_FLOW 0x01
103#define BRCMF_RXREORDER_FLUSH_ALL 0x02
104#define BRCMF_RXREORDER_CURIDX_VALID 0x04
105#define BRCMF_RXREORDER_EXPIDX_VALID 0x08
106#define BRCMF_RXREORDER_NEW_HOLE 0x10
107
349e7104 108#ifdef DEBUG
3edc1cff 109/*
349e7104
AS		 110 * brcmf_fws_tlv_names - array of tlv names.
111 */
112#define BRCMF_FWS_TLV_DEF(name, id, len) \
113 { id, #name },
114static struct {
115 enum brcmf_fws_tlv_type id;
116 const char *name;
117} brcmf_fws_tlv_names[] = {
118 BRCMF_FWS_TLV_DEFLIST
119};
120#undef BRCMF_FWS_TLV_DEF
121
1e86d696 122
349e7104
AS		 123static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
124{
125 int i;
126
127 for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++)
128 if (brcmf_fws_tlv_names[i].id == id)
129 return brcmf_fws_tlv_names[i].name;
130
131 return "INVALID";
132}
133#else
134static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
135{
136 return "NODEBUG";
137}
138#endif /* DEBUG */
139
9a9e405f
AS		 140/*
141 * The PKTTAG tlv has additional bytes when firmware-signalling
142 * mode has REUSESEQ flag set.
143 */
144#define BRCMF_FWS_TYPE_SEQ_LEN 2
145
3edc1cff 146/*
349e7104
AS		 147 * flags used to enable tlv signalling from firmware.
148 */
bb8c8063
AS		 149#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
150#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
151#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
152#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
153#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
154#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
155#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
156
349e7104 157#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
349e7104
AS		 158#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
159
160#define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
161#define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
84bcc0c3
AS		 162#define BRCMF_FWS_FLOWCONTROL_HIWATER 128
163#define BRCMF_FWS_FLOWCONTROL_LOWATER 64
349e7104 164
ae664609 165#define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
bb8c8063
AS		 166#define BRCMF_FWS_PSQ_LEN 256
167
3edc1cff
AS		 168#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
169#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
170
1e86d696
HM		 171#define BRCMF_FWS_RET_OK_NOSCHEDULE 0
172#define BRCMF_FWS_RET_OK_SCHEDULE 1
173
174#define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3 /* seq reuse */
175#define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \
176 ((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \
177 (((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT))
178#define BRCMF_FWS_MODE_GET_REUSESEQ(x) \
179 (((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1)
a5e9d805 180
ebb93883
AS		 181/**
182 * enum brcmf_fws_skb_state - indicates processing state of skb.
3edc1cff
AS		 183 *
184 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
185 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
186 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
c7773fc1 187 * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info.
ebb93883
AS		 188 */
189enum brcmf_fws_skb_state {
3edc1cff
AS		 190 BRCMF_FWS_SKBSTATE_NEW,
191 BRCMF_FWS_SKBSTATE_DELAYED,
c7773fc1
AS		 192 BRCMF_FWS_SKBSTATE_SUPPRESSED,
193 BRCMF_FWS_SKBSTATE_TIM
ebb93883
AS		 194};
195
196/**
197 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
198 *
5491c11c 199 * @bus_flags: 2 bytes reserved for bus specific parameters
ebb93883 200 * @if_flags: holds interface index and packet related flags.
ebb93883 201 * @htod: host to device packet identifier (used in PKTTAG tlv).
1e86d696 202 * @htod_seq: this 16-bit is original seq number for every suppress packet.
ebb93883
AS		 203 * @state: transmit state of the packet.
204 * @mac: descriptor related to destination for this packet.
205 *
206 * This information is stored in control buffer struct sk_buff::cb, which
207 * provides 48 bytes of storage so this structure should not exceed that.
208 */
209struct brcmf_skbuff_cb {
5491c11c 210 u16 bus_flags;
ebb93883 211 u16 if_flags;
ebb93883 212 u32 htod;
1e86d696 213 u16 htod_seq;
ebb93883
AS		 214 enum brcmf_fws_skb_state state;
215 struct brcmf_fws_mac_descriptor *mac;
216};
217
3edc1cff 218/*
ebb93883
AS		 219 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
220 */
221#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
222
3edc1cff 223/*
ebb93883
AS		 224 * sk_buff control if flags
225 *
fa587d4b 226 * b[11] - packet sent upon firmware request.
ebb93883
AS		 227 * b[10] - packet only contains signalling data.
228 * b[9] - packet is a tx packet.
fa587d4b 229 * b[8] - packet used requested credit
ebb93883 230 * b[7] - interface in AP mode.
ebb93883
AS		 231 * b[3:0] - interface index.
232 */
233#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
234#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
235#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
236#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
237#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
238#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
fa587d4b
HM		 239#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
240#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
ebb93883
AS		 241#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
242#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
ebb93883
AS		 243#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
244#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
245
246#define brcmf_skb_if_flags_set_field(skb, field, value) \
247 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
248 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
249 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
250#define brcmf_skb_if_flags_get_field(skb, field) \
251 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
252 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
253 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
254
3edc1cff 255/*
ebb93883
AS		 256 * sk_buff control packet identifier
257 *
258 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
259 *
260 * - Generated at the host (e.g. dhd)
261 * - Seen as a generic sequence number by firmware except for the flags field.
262 *
263 * Generation : b[31] => generation number for this packet [host->fw]
264 * OR, current generation number [fw->host]
265 * Flags : b[30:27] => command, status flags
266 * FIFO-AC : b[26:24] => AC-FIFO id
267 * h-slot : b[23:8] => hanger-slot
268 * freerun : b[7:0] => A free running counter
269 */
270#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
271#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
272#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
273#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
274#define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
275#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
276#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
277#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
278#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
be4910ad 279#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
ebb93883
AS		 280
281#define brcmf_skb_htod_tag_set_field(skb, field, value) \
e2432b67 282 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
ebb93883
AS		 283 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
284 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
285#define brcmf_skb_htod_tag_get_field(skb, field) \
e2432b67 286 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
ebb93883
AS		 287 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
288 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
289
1e86d696
HM		 290#define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000
291#define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13
292#define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000
293#define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12
294#define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff
295#define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0
296
297#define brcmf_skb_htod_seq_set_field(skb, field, value) \
298 brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \
299 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
300 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value))
301#define brcmf_skb_htod_seq_get_field(skb, field) \
302 brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \
303 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
304 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT)
305
3edc1cff
AS		 306#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
307#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
308#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
309#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
310#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
311#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
312#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
313#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
1e86d696
HM		 314#define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF
315#define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0
3edc1cff
AS		 316
317#define brcmf_txstatus_get_field(txs, field) \
318 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
319 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
320
1aac1e91
AS		 321/* How long to defer borrowing in jiffies */
322#define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
323
3edc1cff
AS		 324/**
325 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
326 *
c7773fc1 327 * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background.
3edc1cff
AS		 328 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
329 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
330 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
331 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
332 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
333 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
334 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
335 */
336enum brcmf_fws_fifo {
c7773fc1
AS		 337 BRCMF_FWS_FIFO_FIRST,
338 BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST,
3edc1cff
AS		 339 BRCMF_FWS_FIFO_AC_BE,
340 BRCMF_FWS_FIFO_AC_VI,
341 BRCMF_FWS_FIFO_AC_VO,
342 BRCMF_FWS_FIFO_BCMC,
343 BRCMF_FWS_FIFO_ATIM,
344 BRCMF_FWS_FIFO_COUNT
345};
346
347/**
348 * enum brcmf_fws_txstatus - txstatus flag values.
349 *
350 * @BRCMF_FWS_TXSTATUS_DISCARD:
351 * host is free to discard the packet.
352 * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
353 * 802.11 core suppressed the packet.
354 * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
355 * firmware suppress the packet as device is already in PS mode.
356 * @BRCMF_FWS_TXSTATUS_FW_TOSSED:
357 * firmware tossed the packet.
fa587d4b
HM		 358 * @BRCMF_FWS_TXSTATUS_HOST_TOSSED:
359 * host tossed the packet.
3edc1cff
AS		 360 */
361enum brcmf_fws_txstatus {
362 BRCMF_FWS_TXSTATUS_DISCARD,
363 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS,
364 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS,
fa587d4b
HM		 365 BRCMF_FWS_TXSTATUS_FW_TOSSED,
366 BRCMF_FWS_TXSTATUS_HOST_TOSSED
3edc1cff
AS		 367};
368
c7f34a69
AS		 369enum brcmf_fws_fcmode {
370 BRCMF_FWS_FCMODE_NONE,
371 BRCMF_FWS_FCMODE_IMPLIED_CREDIT,
372 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
373};
374
84bcc0c3
AS		 375enum brcmf_fws_mac_desc_state {
376 BRCMF_FWS_STATE_OPEN = 1,
377 BRCMF_FWS_STATE_CLOSE
378};
379
bb8c8063
AS		 380/**
381 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
382 *
383 * @occupied: slot is in use.
ce814c1b 384 * @mac_handle: handle for mac entry determined by firmware.
bb8c8063
AS		 385 * @interface_id: interface index.
386 * @state: current state.
3edc1cff
AS		 387 * @suppressed: mac entry is suppressed.
388 * @generation: generation bit.
bb8c8063
AS		 389 * @ac_bitmap: ac queue bitmap.
390 * @requested_credit: credits requested by firmware.
391 * @ea: ethernet address.
3edc1cff 392 * @seq: per-node free-running sequence.
bb8c8063 393 * @psq: power-save queue.
3edc1cff 394 * @transit_count: packet in transit to firmware.
bb8c8063
AS		 395 */
396struct brcmf_fws_mac_descriptor {
8071fd61 397 char name[16];
bb8c8063 398 u8 occupied;
ce814c1b 399 u8 mac_handle;
bb8c8063
AS		 400 u8 interface_id;
401 u8 state;
3edc1cff
AS		 402 bool suppressed;
403 u8 generation;
bb8c8063
AS		 404 u8 ac_bitmap;
405 u8 requested_credit;
84bcc0c3 406 u8 requested_packet;
bb8c8063 407 u8 ea[ETH_ALEN];
3edc1cff 408 u8 seq[BRCMF_FWS_FIFO_COUNT];
bb8c8063 409 struct pktq psq;
3edc1cff 410 int transit_count;
84bcc0c3
AS		 411 int suppr_transit_count;
412 bool send_tim_signal;
413 u8 traffic_pending_bmp;
414 u8 traffic_lastreported_bmp;
bb8c8063
AS		 415};
416
6971280a
AS		 417#define BRCMF_FWS_HANGER_MAXITEMS 1024
418
419/**
420 * enum brcmf_fws_hanger_item_state - state of hanger item.
421 *
3edc1cff
AS		 422 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
423 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
424 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
6971280a
AS		 425 */
426enum brcmf_fws_hanger_item_state {
3edc1cff
AS		 427 BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1,
428 BRCMF_FWS_HANGER_ITEM_STATE_INUSE,
429 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
6971280a
AS		 430};
431
432
433/**
434 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
435 *
436 * @state: entry is either free or occupied.
6971280a
AS		 437 * @pkt: packet itself.
438 */
439struct brcmf_fws_hanger_item {
440 enum brcmf_fws_hanger_item_state state;
6971280a
AS		 441 struct sk_buff *pkt;
442};
443
444/**
445 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
446 *
6971280a
AS		 447 * @pushed: packets pushed to await txstatus.
448 * @popped: packets popped upon handling txstatus.
449 * @failed_to_push: packets that could not be pushed.
450 * @failed_to_pop: packets that could not be popped.
451 * @failed_slotfind: packets for which failed to find an entry.
452 * @slot_pos: last returned item index for a free entry.
453 * @items: array of hanger items.
454 */
455struct brcmf_fws_hanger {
456 u32 pushed;
457 u32 popped;
458 u32 failed_to_push;
459 u32 failed_to_pop;
460 u32 failed_slotfind;
461 u32 slot_pos;
462 struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS];
463};
464
84bcc0c3
AS		 465struct brcmf_fws_macdesc_table {
466 struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE];
467 struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS];
468 struct brcmf_fws_mac_descriptor other;
469};
470
82d957e0
AS		 471struct brcmf_fws_stats {
472 u32 tlv_parse_failed;
473 u32 tlv_invalid_type;
474 u32 header_only_pkt;
475 u32 header_pulls;
476 u32 pkt2bus;
477 u32 send_pkts[5];
478 u32 requested_sent[5];
479 u32 generic_error;
480 u32 mac_update_failed;
481 u32 mac_ps_update_failed;
482 u32 if_update_failed;
483 u32 packet_request_failed;
484 u32 credit_request_failed;
485 u32 rollback_success;
486 u32 rollback_failed;
487 u32 delayq_full_error;
488 u32 supprq_full_error;
489 u32 txs_indicate;
490 u32 txs_discard;
491 u32 txs_supp_core;
492 u32 txs_supp_ps;
493 u32 txs_tossed;
494 u32 txs_host_tossed;
495 u32 bus_flow_block;
496 u32 fws_flow_block;
497};
498
349e7104
AS		 499struct brcmf_fws_info {
500 struct brcmf_pub *drvr;
3f4f910f
HM		 501 spinlock_t spinlock;
502 ulong flags;
349e7104 503 struct brcmf_fws_stats stats;
6971280a 504 struct brcmf_fws_hanger hanger;
c7f34a69 505 enum brcmf_fws_fcmode fcmode;
0a4254be 506 bool fw_signals;
7d747037 507 bool bcmc_credit_check;
84bcc0c3
AS		 508 struct brcmf_fws_macdesc_table desc;
509 struct workqueue_struct *fws_wq;
510 struct work_struct fws_dequeue_work;
511 u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT];
3edc1cff 512 int fifo_credit[BRCMF_FWS_FIFO_COUNT];
1aac1e91 513 int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1];
84bcc0c3
AS		 514 int deq_node_pos[BRCMF_FWS_FIFO_COUNT];
515 u32 fifo_credit_map;
516 u32 fifo_delay_map;
1aac1e91 517 unsigned long borrow_defer_timestamp;
df50f756 518 bool bus_flow_blocked;
0d24b0ea 519 bool creditmap_received;
1e86d696 520 u8 mode;
9cd18359 521 bool avoid_queueing;
3edc1cff
AS		 522};
523
524/*
525 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
526 */
527static const int brcmf_fws_prio2fifo[] = {
528 BRCMF_FWS_FIFO_AC_BE,
529 BRCMF_FWS_FIFO_AC_BK,
530 BRCMF_FWS_FIFO_AC_BK,
531 BRCMF_FWS_FIFO_AC_BE,
532 BRCMF_FWS_FIFO_AC_VI,
533 BRCMF_FWS_FIFO_AC_VI,
534 BRCMF_FWS_FIFO_AC_VO,
535 BRCMF_FWS_FIFO_AC_VO
349e7104
AS		 536};
537
bb8c8063
AS		 538#define BRCMF_FWS_TLV_DEF(name, id, len) \
539 case BRCMF_FWS_TYPE_ ## name: \
540 return len;
541
3edc1cff
AS		 542/**
543 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
544 *
545 * @fws: firmware-signalling information.
546 * @id: identifier of the TLV.
547 *
548 * Return: the specified length for the given TLV; Otherwise -EINVAL.
549 */
bb8c8063
AS		 550static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
551 enum brcmf_fws_tlv_type id)
552{
553 switch (id) {
554 BRCMF_FWS_TLV_DEFLIST
555 default:
bb8c8063
AS		 556 fws->stats.tlv_invalid_type++;
557 break;
558 }
559 return -EINVAL;
560}
561#undef BRCMF_FWS_TLV_DEF
562
3f4f910f
HM		 563static void brcmf_fws_lock(struct brcmf_fws_info *fws)
564 __acquires(&fws->spinlock)
565{
566 spin_lock_irqsave(&fws->spinlock, fws->flags);
567}
568
569static void brcmf_fws_unlock(struct brcmf_fws_info *fws)
570 __releases(&fws->spinlock)
571{
572 spin_unlock_irqrestore(&fws->spinlock, fws->flags);
573}
574
3edc1cff
AS		 575static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg)
576{
577 u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
578 return ifidx == *(int *)arg;
579}
580
581static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
582 int ifidx)
583{
584 bool (*matchfn)(struct sk_buff *, void *) = NULL;
585 struct sk_buff *skb;
586 int prec;
587
588 if (ifidx != -1)
589 matchfn = brcmf_fws_ifidx_match;
590 for (prec = 0; prec < q->num_prec; prec++) {
591 skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
592 while (skb) {
84bcc0c3 593 brcmu_pkt_buf_free_skb(skb);
3edc1cff
AS		 594 skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
595 }
596 }
597}
598
6971280a
AS		 599static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
600{
601 int i;
602
6971280a
AS		 603 memset(hanger, 0, sizeof(*hanger));
604 for (i = 0; i < ARRAY_SIZE(hanger->items); i++)
3edc1cff 605 hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
6971280a
AS		 606}
607
3edc1cff 608static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
6971280a
AS		 609{
610 u32 i;
611
6971280a
AS		 612 i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS;
613
614 while (i != h->slot_pos) {
3edc1cff 615 if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
6971280a 616 h->slot_pos = i;
84bcc0c3 617 goto done;
6971280a
AS		 618 }
619 i++;
620 if (i == BRCMF_FWS_HANGER_MAXITEMS)
621 i = 0;
622 }
623 brcmf_err("all slots occupied\n");
624 h->failed_slotfind++;
84bcc0c3
AS		 625 i = BRCMF_FWS_HANGER_MAXITEMS;
626done:
84bcc0c3 627 return i;
6971280a
AS		 628}
629
3edc1cff 630static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
be4910ad 631 struct sk_buff *pkt, u32 slot_id)
6971280a 632{
6971280a
AS		 633 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
634 return -ENOENT;
635
636 if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
637 brcmf_err("slot is not free\n");
638 h->failed_to_push++;
639 return -EINVAL;
640 }
641
642 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE;
643 h->items[slot_id].pkt = pkt;
6971280a
AS		 644 h->pushed++;
645 return 0;
646}
647
22f44150 648static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
6971280a
AS		 649 u32 slot_id, struct sk_buff **pktout,
650 bool remove_item)
651{
6971280a
AS		 652 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
653 return -ENOENT;
654
655 if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
656 brcmf_err("entry not in use\n");
657 h->failed_to_pop++;
658 return -EINVAL;
659 }
660
661 *pktout = h->items[slot_id].pkt;
662 if (remove_item) {
663 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
664 h->items[slot_id].pkt = NULL;
6971280a
AS		 665 h->popped++;
666 }
667 return 0;
668}
669
84bcc0c3 670static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
be4910ad 671 u32 slot_id)
6971280a 672{
6971280a
AS		 673 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
674 return -ENOENT;
675
5631becb 676 if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
6971280a
AS		 677 brcmf_err("entry not in use\n");
678 return -EINVAL;
679 }
680
3edc1cff 681 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED;
6971280a
AS		 682 return 0;
683}
684
84bcc0c3 685static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws,
6971280a
AS		 686 bool (*fn)(struct sk_buff *, void *),
687 int ifidx)
688{
84bcc0c3 689 struct brcmf_fws_hanger *h = &fws->hanger;
6971280a
AS		 690 struct sk_buff *skb;
691 int i;
692 enum brcmf_fws_hanger_item_state s;
693
6971280a
AS		 694 for (i = 0; i < ARRAY_SIZE(h->items); i++) {
695 s = h->items[i].state;
696 if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE ||
697 s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) {
698 skb = h->items[i].pkt;
699 if (fn == NULL || fn(skb, &ifidx)) {
700 /* suppress packets freed from psq */
701 if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE)
702 brcmu_pkt_buf_free_skb(skb);
703 h->items[i].state =
704 BRCMF_FWS_HANGER_ITEM_STATE_FREE;
705 }
706 }
707 }
708}
709
8071fd61
AS		 710static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws,
711 struct brcmf_fws_mac_descriptor *desc)
712{
713 if (desc == &fws->desc.other)
714 strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name));
715 else if (desc->mac_handle)
716 scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d",
717 desc->mac_handle, desc->interface_id);
718 else
719 scnprintf(desc->name, sizeof(desc->name), "MACIF:%d",
720 desc->interface_id);
721}
722
1ab083a3
AS		 723static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc,
724 u8 *addr, u8 ifidx)
ce814c1b 725{
84bcc0c3
AS		 726 brcmf_dbg(TRACE,
727 "enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx);
ce814c1b
AS		 728 desc->occupied = 1;
729 desc->state = BRCMF_FWS_STATE_OPEN;
730 desc->requested_credit = 0;
fa587d4b 731 desc->requested_packet = 0;
37a869ec 732 /* depending on use may need ifp->bsscfgidx instead */
ce814c1b
AS		 733 desc->interface_id = ifidx;
734 desc->ac_bitmap = 0xff; /* update this when handling APSD */
84bcc0c3
AS		 735 if (addr)
736 memcpy(&desc->ea[0], addr, ETH_ALEN);
ce814c1b
AS		 737}
738
739static
1ab083a3 740void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc)
ce814c1b
AS		 741{
742 brcmf_dbg(TRACE,
743 "enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id);
744 desc->occupied = 0;
745 desc->state = BRCMF_FWS_STATE_CLOSE;
746 desc->requested_credit = 0;
fa587d4b 747 desc->requested_packet = 0;
ce814c1b
AS		 748}
749
750static struct brcmf_fws_mac_descriptor *
1ab083a3 751brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea)
ce814c1b
AS		 752{
753 struct brcmf_fws_mac_descriptor *entry;
754 int i;
755
ce814c1b
AS		 756 if (ea == NULL)
757 return ERR_PTR(-EINVAL);
758
84bcc0c3
AS		 759 entry = &fws->desc.nodes[0];
760 for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) {
ce814c1b
AS		 761 if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN))
762 return entry;
763 entry++;
764 }
765
766 return ERR_PTR(-ENOENT);
767}
768
3edc1cff 769static struct brcmf_fws_mac_descriptor*
1ab083a3 770brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da)
3edc1cff 771{
84bcc0c3 772 struct brcmf_fws_mac_descriptor *entry = &fws->desc.other;
3edc1cff 773 bool multicast;
3edc1cff 774
f97a7f06 775 multicast = is_multicast_ether_addr(da);
a7965fbb 776
5cd51c2b
HM		 777 /* Multicast destination, STA and P2P clients get the interface entry.
778 * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
779 * have their own entry.
3edc1cff 780 */
5cd51c2b 781 if (multicast && ifp->fws_desc) {
3edc1cff 782 entry = ifp->fws_desc;
3edc1cff 783 goto done;
5cd51c2b 784 }
3edc1cff 785
1ab083a3 786 entry = brcmf_fws_macdesc_lookup(fws, da);
3edc1cff 787 if (IS_ERR(entry))
5cd51c2b 788 entry = ifp->fws_desc;
3edc1cff
AS		 789
790done:
3edc1cff
AS		 791 return entry;
792}
793
1ab083a3
AS		 794static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws,
795 struct brcmf_fws_mac_descriptor *entry,
796 int fifo)
84bcc0c3 797{
b75c1a30 798 struct brcmf_fws_mac_descriptor *if_entry;
9fc60224 799 bool closed;
84bcc0c3 800
b75c1a30
AS		 801 /* for unique destination entries the related interface
802 * may be closed.
803 */
804 if (entry->mac_handle) {
805 if_entry = &fws->desc.iface[entry->interface_id];
806 if (if_entry->state == BRCMF_FWS_STATE_CLOSE)
807 return true;
808 }
9fc60224
AS		 809 /* an entry is closed when the state is closed and
810 * the firmware did not request anything.
84bcc0c3 811 */
9fc60224
AS		 812 closed = entry->state == BRCMF_FWS_STATE_CLOSE &&
813 !entry->requested_credit && !entry->requested_packet;
84bcc0c3 814
9fc60224
AS		 815 /* Or firmware does not allow traffic for given fifo */
816 return closed || !(entry->ac_bitmap & BIT(fifo));
84bcc0c3
AS		 817}
818
1ab083a3
AS		 819static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws,
820 struct brcmf_fws_mac_descriptor *entry,
821 int ifidx)
fba1400a 822{
3edc1cff 823 if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) {
3edc1cff 824 brcmf_fws_psq_flush(fws, &entry->psq, ifidx);
fba1400a
AS		 825 entry->occupied = !!(entry->psq.len);
826 }
827}
828
e2432b67
AS		 829static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws,
830 bool (*fn)(struct sk_buff *, void *),
831 int ifidx)
832{
833 struct brcmf_fws_hanger_item *hi;
834 struct pktq *txq;
835 struct sk_buff *skb;
836 int prec;
837 u32 hslot;
838
e2432b67
AS		 839 txq = brcmf_bus_gettxq(fws->drvr->bus_if);
840 if (IS_ERR(txq)) {
841 brcmf_dbg(TRACE, "no txq to clean up\n");
842 return;
843 }
844
845 for (prec = 0; prec < txq->num_prec; prec++) {
846 skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
847 while (skb) {
848 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
849 hi = &fws->hanger.items[hslot];
850 WARN_ON(skb != hi->pkt);
851 hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
852 brcmu_pkt_buf_free_skb(skb);
853 skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
854 }
855 }
856}
857
fba1400a
AS		 858static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
859{
860 int i;
861 struct brcmf_fws_mac_descriptor *table;
a3e993c7 862 bool (*matchfn)(struct sk_buff *, void *) = NULL;
fba1400a 863
fba1400a
AS		 864 if (fws == NULL)
865 return;
866
a3e993c7
AS		 867 if (ifidx != -1)
868 matchfn = brcmf_fws_ifidx_match;
869
fba1400a 870 /* cleanup individual nodes */
84bcc0c3
AS		 871 table = &fws->desc.nodes[0];
872 for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++)
1ab083a3 873 brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx);
fba1400a 874
1ab083a3 875 brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx);
e2432b67 876 brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx);
84bcc0c3
AS		 877 brcmf_fws_hanger_cleanup(fws, matchfn, ifidx);
878}
879
7b8a466e 880static u8 brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
84bcc0c3 881{
c7773fc1
AS		 882 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
883 u8 *wlh;
884 u16 data_offset = 0;
885 u8 fillers;
886 __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
1e86d696 887 __le16 pktseq = cpu_to_le16(brcmf_skbcb(skb)->htod_seq);
c7773fc1 888
1e86d696 889 brcmf_dbg(TRACE, "enter: %s, idx=%d hslot=%d htod %X seq %X\n",
80898a11 890 entry->name, brcmf_skb_if_flags_get_field(skb, INDEX),
1e86d696
HM		 891 (le32_to_cpu(pkttag) >> 8) & 0xffff,
892 brcmf_skbcb(skb)->htod, brcmf_skbcb(skb)->htod_seq);
c7773fc1
AS		 893 if (entry->send_tim_signal)
894 data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
1e86d696
HM		 895 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode))
896 data_offset += BRCMF_FWS_TYPE_SEQ_LEN;
c7773fc1
AS		 897 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
898 data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
899 fillers = round_up(data_offset, 4) - data_offset;
900 data_offset += fillers;
901
902 skb_push(skb, data_offset);
903 wlh = skb->data;
904
905 wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
906 wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
907 memcpy(&wlh[2], &pkttag, sizeof(pkttag));
1e86d696
HM		 908 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) {
909 wlh[1] += BRCMF_FWS_TYPE_SEQ_LEN;
910 memcpy(&wlh[2 + BRCMF_FWS_TYPE_PKTTAG_LEN], &pktseq,
911 sizeof(pktseq));
912 }
913 wlh += wlh[1] + 2;
c7773fc1
AS		 914
915 if (entry->send_tim_signal) {
916 entry->send_tim_signal = 0;
917 wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP;
918 wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
919 wlh[2] = entry->mac_handle;
920 wlh[3] = entry->traffic_pending_bmp;
80898a11
AS		 921 brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n",
922 entry->mac_handle, entry->traffic_pending_bmp);
c7773fc1
AS		 923 wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2;
924 entry->traffic_lastreported_bmp = entry->traffic_pending_bmp;
84bcc0c3 925 }
c7773fc1
AS		 926 if (fillers)
927 memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
928
7b8a466e 929 return (u8)(data_offset >> 2);
c7773fc1
AS		 930}
931
932static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws,
933 struct brcmf_fws_mac_descriptor *entry,
4e89dfca 934 int fifo, bool send_immediately)
c7773fc1
AS		 935{
936 struct sk_buff *skb;
c7773fc1
AS		 937 struct brcmf_skbuff_cb *skcb;
938 s32 err;
939 u32 len;
7b8a466e
HM		 940 u8 data_offset;
941 int ifidx;
c7773fc1
AS		 942
943 /* check delayedQ and suppressQ in one call using bitmap */
4e89dfca
AS		 944 if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0)
945 entry->traffic_pending_bmp &= ~NBITVAL(fifo);
c7773fc1 946 else
4e89dfca 947 entry->traffic_pending_bmp |= NBITVAL(fifo);
c7773fc1
AS		 948
949 entry->send_tim_signal = false;
84bcc0c3
AS		 950 if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp)
951 entry->send_tim_signal = true;
c7773fc1
AS		 952 if (send_immediately && entry->send_tim_signal &&
953 entry->state == BRCMF_FWS_STATE_CLOSE) {
954 /* create a dummy packet and sent that. The traffic */
955 /* bitmap info will automatically be attached to that packet */
956 len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 +
1e86d696 957 BRCMF_FWS_TYPE_SEQ_LEN +
c7773fc1
AS		 958 BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 +
959 4 + fws->drvr->hdrlen;
960 skb = brcmu_pkt_buf_get_skb(len);
961 if (skb == NULL)
962 return false;
963 skb_pull(skb, len);
964 skcb = brcmf_skbcb(skb);
965 skcb->mac = entry;
966 skcb->state = BRCMF_FWS_SKBSTATE_TIM;
1e86d696
HM		 967 skcb->htod = 0;
968 skcb->htod_seq = 0;
7b8a466e
HM		 969 data_offset = brcmf_fws_hdrpush(fws, skb);
970 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
971 brcmf_fws_unlock(fws);
972 err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);
973 brcmf_fws_lock(fws);
c7773fc1
AS		 974 if (err)
975 brcmu_pkt_buf_free_skb(skb);
976 return true;
977 }
978 return false;
84bcc0c3
AS		 979}
980
981static void
982brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq,
983 u8 if_id)
984{
46f3b6ee 985 struct brcmf_if *ifp = brcmf_get_ifp(fws->drvr, if_id);
84bcc0c3 986
84bcc0c3
AS		 987 if (WARN_ON(!ifp))
988 return;
989
990 if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
991 pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER)
992 brcmf_txflowblock_if(ifp,
993 BRCMF_NETIF_STOP_REASON_FWS_FC, false);
994 if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
5631becb
AS		 995 pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) {
996 fws->stats.fws_flow_block++;
84bcc0c3 997 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true);
5631becb 998 }
84bcc0c3 999 return;
fba1400a
AS		 1000}
1001
349e7104
AS		 1002static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi)
1003{
1004 brcmf_dbg(CTL, "rssi %d\n", rssi);
1005 return 0;
1006}
1007
ce814c1b
AS		 1008static
1009int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
1010{
1011 struct brcmf_fws_mac_descriptor *entry, *existing;
1012 u8 mac_handle;
1013 u8 ifidx;
1014 u8 *addr;
1015
1016 mac_handle = *data++;
1017 ifidx = *data++;
1018 addr = data;
1019
84bcc0c3 1020 entry = &fws->desc.nodes[mac_handle & 0x1F];
ce814c1b 1021 if (type == BRCMF_FWS_TYPE_MACDESC_DEL) {
9a83f1ec 1022 if (entry->occupied) {
8071fd61
AS		 1023 brcmf_dbg(TRACE, "deleting %s mac %pM\n",
1024 entry->name, addr);
3f4f910f 1025 brcmf_fws_lock(fws);
1ab083a3
AS		 1026 brcmf_fws_macdesc_cleanup(fws, entry, -1);
1027 brcmf_fws_macdesc_deinit(entry);
3f4f910f 1028 brcmf_fws_unlock(fws);
9a83f1ec 1029 } else
ce814c1b 1030 fws->stats.mac_update_failed++;
ce814c1b
AS		 1031 return 0;
1032 }
1033
1ab083a3 1034 existing = brcmf_fws_macdesc_lookup(fws, addr);
ce814c1b
AS		 1035 if (IS_ERR(existing)) {
1036 if (!entry->occupied) {
3f4f910f 1037 brcmf_fws_lock(fws);
ce814c1b 1038 entry->mac_handle = mac_handle;
1ab083a3 1039 brcmf_fws_macdesc_init(entry, addr, ifidx);
8071fd61 1040 brcmf_fws_macdesc_set_name(fws, entry);
ce814c1b
AS		 1041 brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
1042 BRCMF_FWS_PSQ_LEN);
3f4f910f 1043 brcmf_fws_unlock(fws);
8071fd61 1044 brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr);
ce814c1b
AS		 1045 } else {
1046 fws->stats.mac_update_failed++;
1047 }
1048 } else {
1049 if (entry != existing) {
8071fd61 1050 brcmf_dbg(TRACE, "copy mac %s\n", existing->name);
3f4f910f 1051 brcmf_fws_lock(fws);
ce814c1b
AS		 1052 memcpy(entry, existing,
1053 offsetof(struct brcmf_fws_mac_descriptor, psq));
1054 entry->mac_handle = mac_handle;
1ab083a3 1055 brcmf_fws_macdesc_deinit(existing);
8071fd61 1056 brcmf_fws_macdesc_set_name(fws, entry);
3f4f910f 1057 brcmf_fws_unlock(fws);
8071fd61
AS		 1058 brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name,
1059 addr);
ce814c1b
AS		 1060 } else {
1061 brcmf_dbg(TRACE, "use existing\n");
1062 WARN_ON(entry->mac_handle != mac_handle);
1063 /* TODO: what should we do here: continue, reinit, .. */
1064 }
1065 }
1066 return 0;
1067}
1068
33753d47
AS		 1069static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws,
1070 u8 type, u8 *data)
1071{
1072 struct brcmf_fws_mac_descriptor *entry;
1073 u8 mac_handle;
c6a681ab 1074 int ret;
33753d47
AS		 1075
1076 mac_handle = data[0];
1077 entry = &fws->desc.nodes[mac_handle & 0x1F];
1078 if (!entry->occupied) {
1079 fws->stats.mac_ps_update_failed++;
1080 return -ESRCH;
1081 }
3f4f910f 1082 brcmf_fws_lock(fws);
c7773fc1 1083 /* a state update should wipe old credits */
33753d47 1084 entry->requested_credit = 0;
c7773fc1 1085 entry->requested_packet = 0;
33753d47
AS		 1086 if (type == BRCMF_FWS_TYPE_MAC_OPEN) {
1087 entry->state = BRCMF_FWS_STATE_OPEN;
c6a681ab 1088 ret = BRCMF_FWS_RET_OK_SCHEDULE;
33753d47
AS		 1089 } else {
1090 entry->state = BRCMF_FWS_STATE_CLOSE;
c7773fc1
AS		 1091 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false);
1092 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false);
1093 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false);
1094 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true);
c6a681ab 1095 ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
33753d47 1096 }
3f4f910f 1097 brcmf_fws_unlock(fws);
c6a681ab 1098 return ret;
33753d47
AS		 1099}
1100
1101static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws,
1102 u8 type, u8 *data)
1103{
1104 struct brcmf_fws_mac_descriptor *entry;
1105 u8 ifidx;
1106 int ret;
1107
1108 ifidx = data[0];
1109
33753d47
AS		 1110 if (ifidx >= BRCMF_MAX_IFS) {
1111 ret = -ERANGE;
1112 goto fail;
1113 }
1114
1115 entry = &fws->desc.iface[ifidx];
1116 if (!entry->occupied) {
1117 ret = -ESRCH;
1118 goto fail;
1119 }
1120
8071fd61
AS		 1121 brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type,
1122 entry->name);
3f4f910f 1123 brcmf_fws_lock(fws);
33753d47
AS		 1124 switch (type) {
1125 case BRCMF_FWS_TYPE_INTERFACE_OPEN:
1126 entry->state = BRCMF_FWS_STATE_OPEN;
c6a681ab
AS		 1127 ret = BRCMF_FWS_RET_OK_SCHEDULE;
1128 break;
33753d47
AS		 1129 case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
1130 entry->state = BRCMF_FWS_STATE_CLOSE;
c6a681ab
AS		 1131 ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
1132 break;
33753d47
AS		 1133 default:
1134 ret = -EINVAL;
3f4f910f 1135 brcmf_fws_unlock(fws);
c6a681ab 1136 goto fail;
33753d47 1137 }
3f4f910f 1138 brcmf_fws_unlock(fws);
c6a681ab
AS		 1139 return ret;
1140
33753d47
AS		 1141fail:
1142 fws->stats.if_update_failed++;
1143 return ret;
1144}
1145
5f38b683
AS		 1146static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type,
1147 u8 *data)
1148{
1149 struct brcmf_fws_mac_descriptor *entry;
1150
1151 entry = &fws->desc.nodes[data[1] & 0x1F];
1152 if (!entry->occupied) {
1153 if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)
1154 fws->stats.credit_request_failed++;
1155 else
1156 fws->stats.packet_request_failed++;
1157 return -ESRCH;
1158 }
1159
8071fd61
AS		 1160 brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n",
1161 brcmf_fws_get_tlv_name(type), type, entry->name,
1162 data[0], data[2]);
3f4f910f 1163 brcmf_fws_lock(fws);
5f38b683
AS		 1164 if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)
1165 entry->requested_credit = data[0];
1166 else
1167 entry->requested_packet = data[0];
1168
1169 entry->ac_bitmap = data[2];
3f4f910f 1170 brcmf_fws_unlock(fws);
a5e9d805 1171 return BRCMF_FWS_RET_OK_SCHEDULE;
5f38b683
AS		 1172}
1173
fa587d4b
HM		 1174static void
1175brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry,
1176 struct sk_buff *skb)
289ec1c7 1177{
fa587d4b
HM		 1178 if (entry->requested_credit > 0) {
1179 entry->requested_credit--;
1180 brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
1181 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1);
1182 if (entry->state != BRCMF_FWS_STATE_CLOSE)
1183 brcmf_err("requested credit set while mac not closed!\n");
1184 } else if (entry->requested_packet > 0) {
1185 entry->requested_packet--;
1186 brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
1187 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
1188 if (entry->state != BRCMF_FWS_STATE_CLOSE)
1189 brcmf_err("requested packet set while mac not closed!\n");
289ec1c7 1190 } else {
fa587d4b
HM		 1191 brcmf_skb_if_flags_set_field(skb, REQUESTED, 0);
1192 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
289ec1c7 1193 }
fa587d4b
HM		 1194}
1195
1196static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb)
1197{
1198 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
1199
1200 if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) &&
1201 (entry->state == BRCMF_FWS_STATE_CLOSE))
1202 entry->requested_credit++;
289ec1c7
AS		 1203}
1204
84bcc0c3
AS		 1205static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,
1206 u8 fifo, u8 credits)
1207{
1aac1e91
AS		 1208 int lender_ac;
1209 int *borrowed;
1210 int *fifo_credit;
1211
84bcc0c3
AS		 1212 if (!credits)
1213 return;
1214
afc3bbfc
HM		 1215 fws->fifo_credit_map |= 1 << fifo;
1216
1aac1e91
AS		 1217 if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
1218 (fws->credits_borrowed[0])) {
1219 for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0;
1220 lender_ac--) {
1221 borrowed = &fws->credits_borrowed[lender_ac];
1222 if (*borrowed) {
1223 fws->fifo_credit_map |= (1 << lender_ac);
1224 fifo_credit = &fws->fifo_credit[lender_ac];
1225 if (*borrowed >= credits) {
1226 *borrowed -= credits;
1227 *fifo_credit += credits;
1228 return;
1229 } else {
1230 credits -= *borrowed;
1231 *fifo_credit += *borrowed;
1232 *borrowed = 0;
1233 }
1234 }
1235 }
1236 }
1237
84bcc0c3
AS		 1238 fws->fifo_credit[fifo] += credits;
1239}
1240
1241static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws)
1242{
1243 /* only schedule dequeue when there are credits for delayed traffic */
0a4254be
HM		 1244 if ((fws->fifo_credit_map & fws->fifo_delay_map) ||
1245 (!brcmf_fws_fc_active(fws) && fws->fifo_delay_map))
84bcc0c3
AS		 1246 queue_work(fws->fws_wq, &fws->fws_dequeue_work);
1247}
1248
84bcc0c3
AS		 1249static int brcmf_fws_enq(struct brcmf_fws_info *fws,
1250 enum brcmf_fws_skb_state state, int fifo,
1251 struct sk_buff *p)
1252{
1253 int prec = 2 * fifo;
1254 u32 *qfull_stat = &fws->stats.delayq_full_error;
84bcc0c3 1255 struct brcmf_fws_mac_descriptor *entry;
1e86d696
HM		 1256 struct pktq *pq;
1257 struct sk_buff_head *queue;
1258 struct sk_buff *p_head;
1259 struct sk_buff *p_tail;
1260 u32 fr_new;
1261 u32 fr_compare;
84bcc0c3
AS		 1262
1263 entry = brcmf_skbcb(p)->mac;
1264 if (entry == NULL) {
1265 brcmf_err("no mac descriptor found for skb %p\n", p);
1266 return -ENOENT;
1267 }
1268
8071fd61 1269 brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p);
84bcc0c3
AS		 1270 if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) {
1271 prec += 1;
1272 qfull_stat = &fws->stats.supprq_full_error;
84bcc0c3 1273
1e86d696
HM		 1274 /* Fix out of order delivery of frames. Dont assume frame */
1275 /* can be inserted at the end, but look for correct position */
1276 pq = &entry->psq;
1277 if (pktq_full(pq) || pktq_pfull(pq, prec)) {
1278 *qfull_stat += 1;
1279 return -ENFILE;
1280 }
1281 queue = &pq->q[prec].skblist;
1282
1283 p_head = skb_peek(queue);
1284 p_tail = skb_peek_tail(queue);
1285 fr_new = brcmf_skb_htod_tag_get_field(p, FREERUN);
1286
1287 while (p_head != p_tail) {
1288 fr_compare = brcmf_skb_htod_tag_get_field(p_tail,
1289 FREERUN);
1290 /* be sure to handle wrap of 256 */
1291 if (((fr_new > fr_compare) &&
1292 ((fr_new - fr_compare) < 128)) ||
1293 ((fr_new < fr_compare) &&
1294 ((fr_compare - fr_new) > 128)))
1295 break;
1296 p_tail = skb_queue_prev(queue, p_tail);
1297 }
1298 /* Position found. Determine what to do */
1299 if (p_tail == NULL) {
1300 /* empty list */
1301 __skb_queue_tail(queue, p);
1302 } else {
1303 fr_compare = brcmf_skb_htod_tag_get_field(p_tail,
1304 FREERUN);
1305 if (((fr_new > fr_compare) &&
1306 ((fr_new - fr_compare) < 128)) ||
1307 ((fr_new < fr_compare) &&
1308 ((fr_compare - fr_new) > 128))) {
1309 /* After tail */
1310 __skb_queue_after(queue, p_tail, p);
1311 } else {
1312 /* Before tail */
1313 __skb_insert(p, p_tail->prev, p_tail, queue);
1314 }
1315 }
1316
1317 /* Complete the counters and statistics */
1318 pq->len++;
1319 if (pq->hi_prec < prec)
1320 pq->hi_prec = (u8) prec;
1321 } else if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) {
84bcc0c3
AS		 1322 *qfull_stat += 1;
1323 return -ENFILE;
1324 }
1325
1326 /* increment total enqueued packet count */
1327 fws->fifo_delay_map |= 1 << fifo;
1328 fws->fifo_enqpkt[fifo]++;
1329
1330 /* update the sk_buff state */
1331 brcmf_skbcb(p)->state = state;
84bcc0c3
AS		 1332
1333 /*
1334 * A packet has been pushed so update traffic
1335 * availability bitmap, if applicable
1336 */
c7773fc1 1337 brcmf_fws_tim_update(fws, entry, fifo, true);
84bcc0c3
AS		 1338 brcmf_fws_flow_control_check(fws, &entry->psq,
1339 brcmf_skb_if_flags_get_field(p, INDEX));
1340 return 0;
1341}
1342
1343static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
1344{
1345 struct brcmf_fws_mac_descriptor *table;
1346 struct brcmf_fws_mac_descriptor *entry;
1347 struct sk_buff *p;
84bcc0c3
AS		 1348 int num_nodes;
1349 int node_pos;
1350 int prec_out;
07529d20 1351 int pmsk;
84bcc0c3
AS		 1352 int i;
1353
1354 table = (struct brcmf_fws_mac_descriptor *)&fws->desc;
1355 num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor);
1356 node_pos = fws->deq_node_pos[fifo];
1357
1358 for (i = 0; i < num_nodes; i++) {
1359 entry = &table[(node_pos + i) % num_nodes];
b75c1a30 1360 if (!entry->occupied ||
1ab083a3 1361 brcmf_fws_macdesc_closed(fws, entry, fifo))
84bcc0c3
AS		 1362 continue;
1363
1364 if (entry->suppressed)
1365 pmsk = 2;
07529d20
AS		 1366 else
1367 pmsk = 3;
84bcc0c3
AS		 1368 p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out);
1369 if (p == NULL) {
1370 if (entry->suppressed) {
8c5140f6
HM		 1371 if (entry->suppr_transit_count)
1372 continue;
84bcc0c3
AS		 1373 entry->suppressed = false;
1374 p = brcmu_pktq_mdeq(&entry->psq,
1375 1 << (fifo * 2), &prec_out);
1376 }
1377 }
1378 if (p == NULL)
1379 continue;
1380
fa587d4b 1381 brcmf_fws_macdesc_use_req_credit(entry, p);
84bcc0c3
AS		 1382
1383 /* move dequeue position to ensure fair round-robin */
1384 fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes;
1385 brcmf_fws_flow_control_check(fws, &entry->psq,
1386 brcmf_skb_if_flags_get_field(p,
1387 INDEX)
1388 );
1389 /*
1390 * A packet has been picked up, update traffic
1391 * availability bitmap, if applicable
1392 */
c7773fc1 1393 brcmf_fws_tim_update(fws, entry, fifo, false);
84bcc0c3
AS		 1394
1395 /*
1396 * decrement total enqueued fifo packets and
1397 * clear delay bitmap if done.
1398 */
1399 fws->fifo_enqpkt[fifo]--;
1400 if (fws->fifo_enqpkt[fifo] == 0)
1401 fws->fifo_delay_map &= ~(1 << fifo);
1402 goto done;
1403 }
1404 p = NULL;
1405done:
8071fd61 1406 brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p);
84bcc0c3
AS		 1407 return p;
1408}
1409
1410static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
03cca20a 1411 struct sk_buff *skb,
53e30ea4 1412 u32 genbit, u16 seq)
84bcc0c3
AS		 1413{
1414 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
1415 u32 hslot;
1416 int ret;
1417
1418 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
1419
1420 /* this packet was suppressed */
be4910ad 1421 if (!entry->suppressed) {
84bcc0c3 1422 entry->suppressed = true;
84bcc0c3 1423 entry->suppr_transit_count = entry->transit_count;
8c5140f6
HM		 1424 brcmf_dbg(DATA, "suppress %s: transit %d\n",
1425 entry->name, entry->transit_count);
84bcc0c3
AS		 1426 }
1427
1428 entry->generation = genbit;
1429
53e30ea4
HM		 1430 brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit);
1431 brcmf_skbcb(skb)->htod_seq = seq;
1432 if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) {
1433 brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1);
1434 brcmf_skb_htod_seq_set_field(skb, FROMFW, 0);
1435 } else {
1436 brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0);
4d5504ec 1437 }
53e30ea4 1438 ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb);
4d5504ec 1439
84bcc0c3 1440 if (ret != 0) {
53e30ea4
HM		 1441 /* suppress q is full drop this packet */
1442 brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true);
84bcc0c3 1443 } else {
53e30ea4 1444 /* Mark suppressed to avoid a double free during wlfc cleanup */
be4910ad 1445 brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot);
84bcc0c3
AS		 1446 }
1447
1448 return ret;
1449}
1450
3edc1cff 1451static int
8071fd61 1452brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
1e86d696 1453 u32 genbit, u16 seq)
3edc1cff 1454{
84bcc0c3 1455 u32 fifo;
3edc1cff 1456 int ret;
84bcc0c3 1457 bool remove_from_hanger = true;
3edc1cff 1458 struct sk_buff *skb;
8071fd61 1459 struct brcmf_skbuff_cb *skcb;
3edc1cff 1460 struct brcmf_fws_mac_descriptor *entry = NULL;
796cfb65 1461 struct brcmf_if *ifp;
3edc1cff 1462
8071fd61 1463 brcmf_dbg(DATA, "flags %d\n", flags);
3edc1cff
AS		 1464
1465 if (flags == BRCMF_FWS_TXSTATUS_DISCARD)
1466 fws->stats.txs_discard++;
84bcc0c3
AS		 1467 else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) {
1468 fws->stats.txs_supp_core++;
1469 remove_from_hanger = false;
1470 } else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) {
1471 fws->stats.txs_supp_ps++;
1472 remove_from_hanger = false;
5631becb 1473 } else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED)
3edc1cff 1474 fws->stats.txs_tossed++;
5631becb
AS		 1475 else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)
1476 fws->stats.txs_host_tossed++;
3edc1cff
AS		 1477 else
1478 brcmf_err("unexpected txstatus\n");
1479
1480 ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
84bcc0c3 1481 remove_from_hanger);
3edc1cff
AS		 1482 if (ret != 0) {
1483 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot);
1484 return ret;
1485 }
1486
8071fd61
AS		 1487 skcb = brcmf_skbcb(skb);
1488 entry = skcb->mac;
3edc1cff 1489 if (WARN_ON(!entry)) {
84bcc0c3
AS		 1490 brcmu_pkt_buf_free_skb(skb);
1491 return -EINVAL;
3edc1cff 1492 }
8c5140f6
HM		 1493 entry->transit_count--;
1494 if (entry->suppressed && entry->suppr_transit_count)
1495 entry->suppr_transit_count--;
3edc1cff 1496
1e86d696
HM		 1497 brcmf_dbg(DATA, "%s flags %d htod %X seq %X\n", entry->name, flags,
1498 skcb->htod, seq);
8071fd61 1499
84bcc0c3
AS		 1500 /* pick up the implicit credit from this packet */
1501 fifo = brcmf_skb_htod_tag_get_field(skb, FIFO);
fa587d4b
HM		 1502 if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) ||
1503 (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) ||
1504 (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) {
1505 brcmf_fws_return_credits(fws, fifo, 1);
1506 brcmf_fws_schedule_deq(fws);
1507 }
1508 brcmf_fws_macdesc_return_req_credit(skb);
3edc1cff 1509
796cfb65
AS		 1510 ret = brcmf_proto_hdrpull(fws->drvr, false, skb, &ifp);
1511 if (ret) {
53e30ea4
HM		 1512 brcmu_pkt_buf_free_skb(skb);
1513 return -EINVAL;
1514 }
84bcc0c3 1515 if (!remove_from_hanger)
03cca20a 1516 ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb,
53e30ea4 1517 genbit, seq);
8c5140f6 1518 if (remove_from_hanger || ret)
054e68ad 1519 brcmf_txfinalize(ifp, skb, true);
8c5140f6 1520
84bcc0c3
AS		 1521 return 0;
1522}
1523
1524static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws,
1525 u8 *data)
1526{
1527 int i;
1528
1529 if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) {
1530 brcmf_dbg(INFO, "ignored\n");
a5e9d805 1531 return BRCMF_FWS_RET_OK_NOSCHEDULE;
84bcc0c3
AS		 1532 }
1533
8071fd61 1534 brcmf_dbg(DATA, "enter: data %pM\n", data);
3f4f910f 1535 brcmf_fws_lock(fws);
84bcc0c3
AS		 1536 for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++)
1537 brcmf_fws_return_credits(fws, i, data[i]);
1538
8071fd61 1539 brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map,
84bcc0c3 1540 fws->fifo_delay_map);
3f4f910f 1541 brcmf_fws_unlock(fws);
a5e9d805 1542 return BRCMF_FWS_RET_OK_SCHEDULE;
3edc1cff
AS		 1543}
1544
0f8b5cc5
AS		 1545static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
1546{
a2ffc566 1547 __le32 status_le;
1e86d696 1548 __le16 seq_le;
0f8b5cc5
AS		 1549 u32 status;
1550 u32 hslot;
84bcc0c3 1551 u32 genbit;
0f8b5cc5 1552 u8 flags;
1e86d696 1553 u16 seq;
0f8b5cc5
AS		 1554
1555 fws->stats.txs_indicate++;
a2ffc566
AS		 1556 memcpy(&status_le, data, sizeof(status_le));
1557 status = le32_to_cpu(status_le);
0f8b5cc5
AS		 1558 flags = brcmf_txstatus_get_field(status, FLAGS);
1559 hslot = brcmf_txstatus_get_field(status, HSLOT);
84bcc0c3 1560 genbit = brcmf_txstatus_get_field(status, GENERATION);
1e86d696
HM		 1561 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) {
1562 memcpy(&seq_le, &data[BRCMF_FWS_TYPE_PKTTAG_LEN],
1563 sizeof(seq_le));
1564 seq = le16_to_cpu(seq_le);
1565 } else {
1566 seq = 0;
1567 }
0f8b5cc5 1568
3f4f910f 1569 brcmf_fws_lock(fws);
1e86d696 1570 brcmf_fws_txs_process(fws, flags, hslot, genbit, seq);
3f4f910f 1571 brcmf_fws_unlock(fws);
c6a681ab 1572 return BRCMF_FWS_RET_OK_NOSCHEDULE;
0f8b5cc5
AS		 1573}
1574
349e7104
AS		 1575static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
1576{
1577 __le32 timestamp;
1578
1579 memcpy(&timestamp, &data[2], sizeof(timestamp));
8071fd61 1580 brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1],
349e7104
AS		 1581 le32_to_cpu(timestamp));
1582 return 0;
1583}
1584
43fa635e
AS		 1585static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
1586 const struct brcmf_event_msg *e,
1587 void *data)
1588{
1589 struct brcmf_fws_info *fws = ifp->drvr->fws;
1590 int i;
43fa635e
AS		 1591 u8 *credits = data;
1592
84bcc0c3
AS		 1593 if (e->datalen < BRCMF_FWS_FIFO_COUNT) {
1594 brcmf_err("event payload too small (%d)\n", e->datalen);
1595 return -EINVAL;
1596 }
0d24b0ea
HM		 1597 if (fws->creditmap_received)
1598 return 0;
1599
1600 fws->creditmap_received = true;
84bcc0c3
AS		 1601
1602 brcmf_dbg(TRACE, "enter: credits %pM\n", credits);
3f4f910f 1603 brcmf_fws_lock(fws);
84bcc0c3
AS		 1604 for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) {
1605 if (*credits)
1606 fws->fifo_credit_map |= 1 << i;
1607 else
1608 fws->fifo_credit_map &= ~(1 << i);
43fa635e 1609 fws->fifo_credit[i] = *credits++;
84bcc0c3
AS		 1610 }
1611 brcmf_fws_schedule_deq(fws);
3f4f910f 1612 brcmf_fws_unlock(fws);
43fa635e
AS		 1613 return 0;
1614}
1615
7d747037
HM		 1616static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp,
1617 const struct brcmf_event_msg *e,
1618 void *data)
1619{
1620 struct brcmf_fws_info *fws = ifp->drvr->fws;
7d747037 1621
b513cac2
CIK		 1622 if (fws) {
1623 brcmf_fws_lock(fws);
7d747037 1624 fws->bcmc_credit_check = true;
b513cac2
CIK		 1625 brcmf_fws_unlock(fws);
1626 }
7d747037
HM		 1627 return 0;
1628}
1629
bbd1f932
AS		 1630static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
1631 u8 start, u8 end,
1632 struct sk_buff_head *skb_list)
1633{
1634 /* initialize return list */
1635 __skb_queue_head_init(skb_list);
1636
1637 if (rfi->pend_pkts == 0) {
1638 brcmf_dbg(INFO, "no packets in reorder queue\n");
1639 return;
1640 }
1641
1642 do {
1643 if (rfi->pktslots[start]) {
1644 __skb_queue_tail(skb_list, rfi->pktslots[start]);
1645 rfi->pktslots[start] = NULL;
1646 }
1647 start++;
1648 if (start > rfi->max_idx)
1649 start = 0;
1650 } while (start != end);
1651 rfi->pend_pkts -= skb_queue_len(skb_list);
1652}
1653
1654void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
1655{
1656 u8 *reorder_data;
1657 u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
1658 struct brcmf_ampdu_rx_reorder *rfi;
1659 struct sk_buff_head reorder_list;
1660 struct sk_buff *pnext;
1661 u8 flags;
1662 u32 buf_size;
1663
1664 reorder_data = ((struct brcmf_skb_reorder_data *)pkt->cb)->reorder;
1665 flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
1666 flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
1667
1668 /* validate flags and flow id */
1669 if (flags == 0xFF) {
1670 brcmf_err("invalid flags...so ignore this packet\n");
9c349892 1671 brcmf_netif_rx(ifp, pkt);
bbd1f932
AS		 1672 return;
1673 }
1674
1675 rfi = ifp->drvr->reorder_flows[flow_id];
1676 if (flags & BRCMF_RXREORDER_DEL_FLOW) {
1677 brcmf_dbg(INFO, "flow-%d: delete\n",
1678 flow_id);
1679
1680 if (rfi == NULL) {
1681 brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
1682 flow_id);
9c349892 1683 brcmf_netif_rx(ifp, pkt);
bbd1f932
AS		 1684 return;
1685 }
1686
1687 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
1688 &reorder_list);
1689 /* add the last packet */
1690 __skb_queue_tail(&reorder_list, pkt);
1691 kfree(rfi);
1692 ifp->drvr->reorder_flows[flow_id] = NULL;
1693 goto netif_rx;
1694 }
1695 /* from here on we need a flow reorder instance */
1696 if (rfi == NULL) {
1697 buf_size = sizeof(*rfi);
1698 max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
1699
1700 buf_size += (max_idx + 1) * sizeof(pkt);
1701
1702 /* allocate space for flow reorder info */
1703 brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
1704 flow_id, max_idx);
1705 rfi = kzalloc(buf_size, GFP_ATOMIC);
1706 if (rfi == NULL) {
1707 brcmf_err("failed to alloc buffer\n");
9c349892 1708 brcmf_netif_rx(ifp, pkt);
bbd1f932
AS		 1709 return;
1710 }
1711
1712 ifp->drvr->reorder_flows[flow_id] = rfi;
1713 rfi->pktslots = (struct sk_buff **)(rfi + 1);
1714 rfi->max_idx = max_idx;
1715 }
1716 if (flags & BRCMF_RXREORDER_NEW_HOLE) {
1717 if (rfi->pend_pkts) {
1718 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
1719 rfi->exp_idx,
1720 &reorder_list);
1721 WARN_ON(rfi->pend_pkts);
1722 } else {
1723 __skb_queue_head_init(&reorder_list);
1724 }
1725 rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
1726 rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1727 rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
1728 rfi->pktslots[rfi->cur_idx] = pkt;
1729 rfi->pend_pkts++;
1730 brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
1731 flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
1732 } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
1733 cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
1734 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1735
1736 if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
1737 /* still in the current hole */
1738 /* enqueue the current on the buffer chain */
1739 if (rfi->pktslots[cur_idx] != NULL) {
1740 brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
1741 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
1742 rfi->pktslots[cur_idx] = NULL;
1743 }
1744 rfi->pktslots[cur_idx] = pkt;
1745 rfi->pend_pkts++;
1746 rfi->cur_idx = cur_idx;
1747 brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
1748 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
1749
1750 /* can return now as there is no reorder
1751 * list to process.
1752 */
1753 return;
1754 }
1755 if (rfi->exp_idx == cur_idx) {
1756 if (rfi->pktslots[cur_idx] != NULL) {
1757 brcmf_dbg(INFO, "error buffer pending..free it\n");
1758 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
1759 rfi->pktslots[cur_idx] = NULL;
1760 }
1761 rfi->pktslots[cur_idx] = pkt;
1762 rfi->pend_pkts++;
1763
1764 /* got the expected one. flush from current to expected
1765 * and update expected
1766 */
1767 brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
1768 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
1769
1770 rfi->cur_idx = cur_idx;
1771 rfi->exp_idx = exp_idx;
1772
1773 brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
1774 &reorder_list);
1775 brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
1776 flow_id, skb_queue_len(&reorder_list),
1777 rfi->pend_pkts);
1778 } else {
1779 u8 end_idx;
1780
1781 brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
1782 flow_id, flags, rfi->cur_idx, rfi->exp_idx,
1783 cur_idx, exp_idx);
1784 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
1785 end_idx = rfi->exp_idx;
1786 else
1787 end_idx = exp_idx;
1788
1789 /* flush pkts first */
1790 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
1791 &reorder_list);
1792
1793 if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
1794 __skb_queue_tail(&reorder_list, pkt);
1795 } else {
1796 rfi->pktslots[cur_idx] = pkt;
1797 rfi->pend_pkts++;
1798 }
1799 rfi->exp_idx = exp_idx;
1800 rfi->cur_idx = cur_idx;
1801 }
1802 } else {
1803 /* explicity window move updating the expected index */
1804 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1805
1806 brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
1807 flow_id, flags, rfi->exp_idx, exp_idx);
1808 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
1809 end_idx = rfi->exp_idx;
1810 else
1811 end_idx = exp_idx;
1812
1813 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
1814 &reorder_list);
1815 __skb_queue_tail(&reorder_list, pkt);
1816 /* set the new expected idx */
1817 rfi->exp_idx = exp_idx;
1818 }
1819netif_rx:
1820 skb_queue_walk_safe(&reorder_list, pkt, pnext) {
1821 __skb_unlink(pkt, &reorder_list);
9c349892 1822 brcmf_netif_rx(ifp, pkt);
bbd1f932
AS		 1823 }
1824}
1825
c67d41ba 1826void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb)
349e7104 1827{
87edd891 1828 struct brcmf_skb_reorder_data *rd;
c67d41ba 1829 struct brcmf_fws_info *fws = ifp->drvr->fws;
349e7104
AS		 1830 u8 *signal_data;
1831 s16 data_len;
1832 u8 type;
1833 u8 len;
1834 u8 *data;
a5e9d805
AS		 1835 s32 status;
1836 s32 err;
349e7104 1837
8071fd61 1838 brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n",
c67d41ba 1839 ifp->ifidx, skb->len, siglen);
349e7104 1840
c67d41ba 1841 WARN_ON(siglen > skb->len);
349e7104 1842
c67d41ba
AS		 1843 if (!siglen)
1844 return;
349e7104 1845 /* if flow control disabled, skip to packet data and leave */
58b2251e 1846 if ((!fws) || (!fws->fw_signals)) {
c67d41ba
AS		 1847 skb_pull(skb, siglen);
1848 return;
349e7104
AS		 1849 }
1850
349e7104 1851 fws->stats.header_pulls++;
c67d41ba 1852 data_len = siglen;
349e7104
AS		 1853 signal_data = skb->data;
1854
a5e9d805 1855 status = BRCMF_FWS_RET_OK_NOSCHEDULE;
349e7104
AS		 1856 while (data_len > 0) {
1857 /* extract tlv info */
1858 type = signal_data[0];
1859
1860 /* FILLER type is actually not a TLV, but
1861 * a single byte that can be skipped.
1862 */
1863 if (type == BRCMF_FWS_TYPE_FILLER) {
1864 signal_data += 1;
1865 data_len -= 1;
1866 continue;
1867 }
1868 len = signal_data[1];
1869 data = signal_data + 2;
1870
8071fd61
AS		 1871 brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n",
1872 brcmf_fws_get_tlv_name(type), type, len,
1873 brcmf_fws_get_tlv_len(fws, type));
2af15580 1874
349e7104
AS		 1875 /* abort parsing when length invalid */
1876 if (data_len < len + 2)
1877 break;
1878
f55d94a6 1879 if (len < brcmf_fws_get_tlv_len(fws, type))
bb8c8063
AS		 1880 break;
1881
a5e9d805 1882 err = BRCMF_FWS_RET_OK_NOSCHEDULE;
349e7104 1883 switch (type) {
bb8c8063 1884 case BRCMF_FWS_TYPE_COMP_TXSTATUS:
ce814c1b 1885 break;
87edd891
AS		 1886 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS:
1887 rd = (struct brcmf_skb_reorder_data *)skb->cb;
1888 rd->reorder = data;
1889 break;
bb8c8063
AS		 1890 case BRCMF_FWS_TYPE_MACDESC_ADD:
1891 case BRCMF_FWS_TYPE_MACDESC_DEL:
ce814c1b 1892 brcmf_fws_macdesc_indicate(fws, type, data);
bb8c8063 1893 break;
33753d47
AS		 1894 case BRCMF_FWS_TYPE_MAC_OPEN:
1895 case BRCMF_FWS_TYPE_MAC_CLOSE:
a5e9d805 1896 err = brcmf_fws_macdesc_state_indicate(fws, type, data);
33753d47
AS		 1897 break;
1898 case BRCMF_FWS_TYPE_INTERFACE_OPEN:
1899 case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
a5e9d805
AS		 1900 err = brcmf_fws_interface_state_indicate(fws, type,
1901 data);
33753d47 1902 break;
5f38b683
AS		 1903 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:
1904 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:
a5e9d805 1905 err = brcmf_fws_request_indicate(fws, type, data);
5f38b683 1906 break;
3edc1cff
AS		 1907 case BRCMF_FWS_TYPE_TXSTATUS:
1908 brcmf_fws_txstatus_indicate(fws, data);
1909 break;
84bcc0c3 1910 case BRCMF_FWS_TYPE_FIFO_CREDITBACK:
a5e9d805 1911 err = brcmf_fws_fifocreditback_indicate(fws, data);
84bcc0c3 1912 break;
bb8c8063
AS		 1913 case BRCMF_FWS_TYPE_RSSI:
1914 brcmf_fws_rssi_indicate(fws, *data);
349e7104
AS		 1915 break;
1916 case BRCMF_FWS_TYPE_TRANS_ID:
349e7104
AS		 1917 brcmf_fws_dbg_seqnum_check(fws, data);
1918 break;
84bcc0c3
AS		 1919 case BRCMF_FWS_TYPE_PKTTAG:
1920 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP:
349e7104
AS		 1921 default:
1922 fws->stats.tlv_invalid_type++;
1923 break;
1924 }
a5e9d805
AS		 1925 if (err == BRCMF_FWS_RET_OK_SCHEDULE)
1926 status = BRCMF_FWS_RET_OK_SCHEDULE;
349e7104
AS		 1927 signal_data += len + 2;
1928 data_len -= len + 2;
1929 }
1930
1931 if (data_len != 0)
1932 fws->stats.tlv_parse_failed++;
1933
a5e9d805
AS		 1934 if (status == BRCMF_FWS_RET_OK_SCHEDULE)
1935 brcmf_fws_schedule_deq(fws);
1936
349e7104
AS		 1937 /* signalling processing result does
1938 * not affect the actual ethernet packet.
1939 */
c67d41ba 1940 skb_pull(skb, siglen);
349e7104
AS		 1941
1942 /* this may be a signal-only packet
1943 */
1944 if (skb->len == 0)
1945 fws->stats.header_only_pkt++;
349e7104 1946}
bb8c8063 1947
7b8a466e 1948static u8 brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
3edc1cff
AS		 1949 struct sk_buff *p)
1950{
1951 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
1952 struct brcmf_fws_mac_descriptor *entry = skcb->mac;
3edc1cff
AS		 1953 u8 flags;
1954
1e86d696
HM		 1955 if (skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED)
1956 brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation);
be4910ad 1957 flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST;
fa587d4b 1958 if (brcmf_skb_if_flags_get_field(p, REQUESTED)) {
be4910ad
HM		 1959 /*
1960 * Indicate that this packet is being sent in response to an
1961 * explicit request from the firmware side.
1962 */
1963 flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED;
1964 }
1965 brcmf_skb_htod_tag_set_field(p, FLAGS, flags);
7b8a466e 1966 return brcmf_fws_hdrpush(fws, p);
3edc1cff
AS		 1967}
1968
456d0685
AS		 1969static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws,
1970 struct sk_buff *skb, int fifo)
84bcc0c3 1971{
84bcc0c3 1972 struct brcmf_fws_mac_descriptor *entry;
84bcc0c3 1973 struct sk_buff *pktout;
456d0685 1974 int qidx, hslot;
84bcc0c3 1975 int rc = 0;
84bcc0c3 1976
84bcc0c3 1977 entry = brcmf_skbcb(skb)->mac;
456d0685
AS		 1978 if (entry->occupied) {
1979 qidx = 2 * fifo;
1980 if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED)
1981 qidx++;
1982
1983 pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb);
1984 if (pktout == NULL) {
1985 brcmf_err("%s queue %d full\n", entry->name, qidx);
1986 rc = -ENOSPC;
84bcc0c3 1987 }
84bcc0c3 1988 } else {
456d0685 1989 brcmf_err("%s entry removed\n", entry->name);
84bcc0c3
AS		 1990 rc = -ENOENT;
1991 }
1992
67994fa2 1993 if (rc) {
84bcc0c3 1994 fws->stats.rollback_failed++;
456d0685 1995 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
fa587d4b 1996 brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED,
1e86d696 1997 hslot, 0, 0);
289ec1c7 1998 } else {
84bcc0c3 1999 fws->stats.rollback_success++;
fa587d4b
HM		 2000 brcmf_fws_return_credits(fws, fifo, 1);
2001 brcmf_fws_macdesc_return_req_credit(skb);
289ec1c7 2002 }
84bcc0c3
AS		 2003}
2004
1aac1e91
AS		 2005static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws)
2006{
2007 int lender_ac;
2008
afc3bbfc
HM		 2009 if (time_after(fws->borrow_defer_timestamp, jiffies)) {
2010 fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
1aac1e91 2011 return -ENAVAIL;
afc3bbfc 2012 }
1aac1e91
AS		 2013
2014 for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) {
2015 if (fws->fifo_credit[lender_ac]) {
2016 fws->credits_borrowed[lender_ac]++;
2017 fws->fifo_credit[lender_ac]--;
2018 if (fws->fifo_credit[lender_ac] == 0)
2019 fws->fifo_credit_map &= ~(1 << lender_ac);
afc3bbfc 2020 fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE);
8071fd61 2021 brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac);
1aac1e91
AS		 2022 return 0;
2023 }
2024 }
afc3bbfc 2025 fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
1aac1e91
AS		 2026 return -ENAVAIL;
2027}
2028
3edc1cff
AS		 2029static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
2030 struct sk_buff *skb)
2031{
2032 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
2033 struct brcmf_fws_mac_descriptor *entry;
3edc1cff 2034 int rc;
2747e5f7 2035 u8 ifidx;
7b8a466e 2036 u8 data_offset;
3edc1cff
AS		 2037
2038 entry = skcb->mac;
2039 if (IS_ERR(entry))
2040 return PTR_ERR(entry);
2041
7b8a466e 2042 data_offset = brcmf_fws_precommit_skb(fws, fifo, skb);
3f4f910f
HM		 2043 entry->transit_count++;
2044 if (entry->suppressed)
2045 entry->suppr_transit_count++;
7b8a466e 2046 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
3f4f910f 2047 brcmf_fws_unlock(fws);
7b8a466e 2048 rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);
3f4f910f 2049 brcmf_fws_lock(fws);
456d0685
AS		 2050 brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name,
2051 skcb->if_flags, skcb->htod, rc);
2747e5f7 2052 if (rc < 0) {
3f4f910f
HM		 2053 entry->transit_count--;
2054 if (entry->suppressed)
2055 entry->suppr_transit_count--;
796cfb65 2056 (void)brcmf_proto_hdrpull(fws->drvr, false, skb, NULL);
84bcc0c3 2057 goto rollback;
2747e5f7 2058 }
3edc1cff 2059
3edc1cff 2060 fws->stats.pkt2bus++;
cf3a6872 2061 fws->stats.send_pkts[fifo]++;
fa587d4b
HM		 2062 if (brcmf_skb_if_flags_get_field(skb, REQUESTED))
2063 fws->stats.requested_sent[fifo]++;
84bcc0c3 2064
3edc1cff
AS		 2065 return rc;
2066
84bcc0c3 2067rollback:
51f6dd9d 2068 brcmf_fws_rollback_toq(fws, skb, fifo);
3edc1cff
AS		 2069 return rc;
2070}
2071
456d0685
AS		 2072static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p,
2073 int fifo)
2074{
2075 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
2076 int rc, hslot;
2077
1e86d696
HM		 2078 skcb->htod = 0;
2079 skcb->htod_seq = 0;
456d0685
AS		 2080 hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
2081 brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
2082 brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]);
2083 brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
2084 rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
2085 if (!rc)
2086 skcb->mac->seq[fifo]++;
2087 else
2088 fws->stats.generic_error++;
2089 return rc;
2090}
2091
3edc1cff
AS		 2092int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
2093{
2094 struct brcmf_pub *drvr = ifp->drvr;
1aac1e91 2095 struct brcmf_fws_info *fws = drvr->fws;
3edc1cff
AS		 2096 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
2097 struct ethhdr *eh = (struct ethhdr *)(skb->data);
3edc1cff
AS		 2098 int fifo = BRCMF_FWS_FIFO_BCMC;
2099 bool multicast = is_multicast_ether_addr(eh->h_dest);
55929443 2100 int rc = 0;
3edc1cff 2101
87edd891 2102 brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto));
9cd18359 2103
3edc1cff 2104 /* set control buffer information */
84bcc0c3 2105 skcb->if_flags = 0;
3edc1cff 2106 skcb->state = BRCMF_FWS_SKBSTATE_NEW;
31ed07dc 2107 brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx);
3edc1cff
AS		 2108 if (!multicast)
2109 fifo = brcmf_fws_prio2fifo[skb->priority];
3edc1cff 2110
3f4f910f 2111 brcmf_fws_lock(fws);
20863746
AS		 2112 if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC)
2113 fws->borrow_defer_timestamp = jiffies +
2114 BRCMF_FWS_BORROW_DEFER_PERIOD;
456d0685
AS		 2115
2116 skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest);
2117 brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name,
2118 eh->h_dest, multicast, fifo);
2119 if (!brcmf_fws_assign_htod(fws, skb, fifo)) {
2120 brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb);
2121 brcmf_fws_schedule_deq(fws);
2122 } else {
2123 brcmf_err("drop skb: no hanger slot\n");
054e68ad 2124 brcmf_txfinalize(ifp, skb, false);
55929443 2125 rc = -ENOMEM;
456d0685 2126 }
3f4f910f 2127 brcmf_fws_unlock(fws);
55929443
HM		 2128
2129 return rc;
3edc1cff
AS		 2130}
2131
bb8c8063
AS		 2132void brcmf_fws_reset_interface(struct brcmf_if *ifp)
2133{
2134 struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
2135
37a869ec 2136 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
bb8c8063
AS		 2137 if (!entry)
2138 return;
2139
1ab083a3 2140 brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
bb8c8063
AS		 2141}
2142
2143void brcmf_fws_add_interface(struct brcmf_if *ifp)
2144{
84bcc0c3 2145 struct brcmf_fws_info *fws = ifp->drvr->fws;
bb8c8063
AS		 2146 struct brcmf_fws_mac_descriptor *entry;
2147
0a4254be 2148 if (!ifp->ndev)
bb8c8063
AS		 2149 return;
2150
84bcc0c3
AS		 2151 entry = &fws->desc.iface[ifp->ifidx];
2152 ifp->fws_desc = entry;
1ab083a3 2153 brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
8071fd61 2154 brcmf_fws_macdesc_set_name(fws, entry);
84bcc0c3
AS		 2155 brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
2156 BRCMF_FWS_PSQ_LEN);
8071fd61 2157 brcmf_dbg(TRACE, "added %s\n", entry->name);
bb8c8063
AS		 2158}
2159
2160void brcmf_fws_del_interface(struct brcmf_if *ifp)
2161{
2162 struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
2163
bb8c8063
AS		 2164 if (!entry)
2165 return;
2166
3f4f910f 2167 brcmf_fws_lock(ifp->drvr->fws);
bb8c8063 2168 ifp->fws_desc = NULL;
8071fd61 2169 brcmf_dbg(TRACE, "deleting %s\n", entry->name);
1ab083a3 2170 brcmf_fws_macdesc_deinit(entry);
a3e993c7 2171 brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx);
3f4f910f 2172 brcmf_fws_unlock(ifp->drvr->fws);
84bcc0c3
AS		 2173}
2174
2175static void brcmf_fws_dequeue_worker(struct work_struct *worker)
2176{
2177 struct brcmf_fws_info *fws;
0a4254be 2178 struct brcmf_pub *drvr;
84bcc0c3 2179 struct sk_buff *skb;
84bcc0c3 2180 int fifo;
0a4254be
HM		 2181 u32 hslot;
2182 u32 ifidx;
2183 int ret;
84bcc0c3
AS		 2184
2185 fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work);
0a4254be 2186 drvr = fws->drvr;
84bcc0c3 2187
3f4f910f 2188 brcmf_fws_lock(fws);
2a5d7b02 2189 for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked;
df50f756 2190 fifo--) {
0a4254be
HM		 2191 if (!brcmf_fws_fc_active(fws)) {
2192 while ((skb = brcmf_fws_deq(fws, fifo)) != NULL) {
2193 hslot = brcmf_skb_htod_tag_get_field(skb,
2194 HSLOT);
2195 brcmf_fws_hanger_poppkt(&fws->hanger, hslot,
2196 &skb, true);
2197 ifidx = brcmf_skb_if_flags_get_field(skb,
2198 INDEX);
7b8a466e 2199 /* Use proto layer to send data frame */
3f4f910f 2200 brcmf_fws_unlock(fws);
7b8a466e 2201 ret = brcmf_proto_txdata(drvr, ifidx, 0, skb);
3f4f910f 2202 brcmf_fws_lock(fws);
0a4254be 2203 if (ret < 0)
054e68ad
AS		 2204 brcmf_txfinalize(brcmf_get_ifp(drvr,
2205 ifidx),
2206 skb, false);
0a4254be
HM		 2207 if (fws->bus_flow_blocked)
2208 break;
2209 }
2210 continue;
2211 }
7d747037
HM		 2212 while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) &&
2213 (fifo == BRCMF_FWS_FIFO_BCMC))) {
84bcc0c3 2214 skb = brcmf_fws_deq(fws, fifo);
289ec1c7 2215 if (!skb)
84bcc0c3 2216 break;
fa587d4b 2217 fws->fifo_credit[fifo]--;
289ec1c7
AS		 2218 if (brcmf_fws_commit_skb(fws, fifo, skb))
2219 break;
df50f756
HM		 2220 if (fws->bus_flow_blocked)
2221 break;
84bcc0c3 2222 }
1aac1e91 2223 if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
289ec1c7 2224 (fws->fifo_credit[fifo] == 0) &&
df50f756 2225 (!fws->bus_flow_blocked)) {
1aac1e91
AS		 2226 while (brcmf_fws_borrow_credit(fws) == 0) {
2227 skb = brcmf_fws_deq(fws, fifo);
2228 if (!skb) {
2229 brcmf_fws_return_credits(fws, fifo, 1);
2230 break;
2231 }
eb2410cd
HM		 2232 if (brcmf_fws_commit_skb(fws, fifo, skb))
2233 break;
df50f756
HM		 2234 if (fws->bus_flow_blocked)
2235 break;
1aac1e91 2236 }
1aac1e91 2237 }
84bcc0c3 2238 }
3f4f910f 2239 brcmf_fws_unlock(fws);
bb8c8063 2240}
c7f34a69 2241
82d957e0
AS		 2242#ifdef DEBUG
2243static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data)
2244{
2245 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
2246 struct brcmf_fws_stats *fwstats = &bus_if->drvr->fws->stats;
2247
2248 seq_printf(seq,
2249 "header_pulls: %u\n"
2250 "header_only_pkt: %u\n"
2251 "tlv_parse_failed: %u\n"
2252 "tlv_invalid_type: %u\n"
2253 "mac_update_fails: %u\n"
2254 "ps_update_fails: %u\n"
2255 "if_update_fails: %u\n"
2256 "pkt2bus: %u\n"
2257 "generic_error: %u\n"
2258 "rollback_success: %u\n"
2259 "rollback_failed: %u\n"
2260 "delayq_full: %u\n"
2261 "supprq_full: %u\n"
2262 "txs_indicate: %u\n"
2263 "txs_discard: %u\n"
2264 "txs_suppr_core: %u\n"
2265 "txs_suppr_ps: %u\n"
2266 "txs_tossed: %u\n"
2267 "txs_host_tossed: %u\n"
2268 "bus_flow_block: %u\n"
2269 "fws_flow_block: %u\n"
2270 "send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n"
2271 "requested_sent: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n",
2272 fwstats->header_pulls,
2273 fwstats->header_only_pkt,
2274 fwstats->tlv_parse_failed,
2275 fwstats->tlv_invalid_type,
2276 fwstats->mac_update_failed,
2277 fwstats->mac_ps_update_failed,
2278 fwstats->if_update_failed,
2279 fwstats->pkt2bus,
2280 fwstats->generic_error,
2281 fwstats->rollback_success,
2282 fwstats->rollback_failed,
2283 fwstats->delayq_full_error,
2284 fwstats->supprq_full_error,
2285 fwstats->txs_indicate,
2286 fwstats->txs_discard,
2287 fwstats->txs_supp_core,
2288 fwstats->txs_supp_ps,
2289 fwstats->txs_tossed,
2290 fwstats->txs_host_tossed,
2291 fwstats->bus_flow_block,
2292 fwstats->fws_flow_block,
2293 fwstats->send_pkts[0], fwstats->send_pkts[1],
2294 fwstats->send_pkts[2], fwstats->send_pkts[3],
2295 fwstats->send_pkts[4],
2296 fwstats->requested_sent[0],
2297 fwstats->requested_sent[1],
2298 fwstats->requested_sent[2],
2299 fwstats->requested_sent[3],
2300 fwstats->requested_sent[4]);
2301
2302 return 0;
2303}
2304#else
2305static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data)
2306{
2307 return 0;
2308}
2309#endif
2310
d9337414
AS		 2311int brcmf_fws_init(struct brcmf_pub *drvr)
2312{
0a4254be 2313 struct brcmf_fws_info *fws;
46f3b6ee 2314 struct brcmf_if *ifp;
290fb763 2315 u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS;
d9337414 2316 int rc;
1e86d696 2317 u32 mode;
d9337414 2318
d9337414
AS		 2319 drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL);
2320 if (!drvr->fws) {
2321 rc = -ENOMEM;
2322 goto fail;
2323 }
2324
0a4254be 2325 fws = drvr->fws;
3f4f910f
HM		 2326
2327 spin_lock_init(&fws->spinlock);
2328
d9337414 2329 /* set linkage back */
0a4254be 2330 fws->drvr = drvr;
7d34b056 2331 fws->fcmode = drvr->settings->fcmode;
d9337414 2332
9cd18359 2333 if ((drvr->bus_if->always_use_fws_queue == false) &&
7d34b056 2334 (fws->fcmode == BRCMF_FWS_FCMODE_NONE)) {
9cd18359
HM		 2335 fws->avoid_queueing = true;
2336 brcmf_dbg(INFO, "FWS queueing will be avoided\n");
2337 return 0;
2338 }
2339
0a4254be
HM		 2340 fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq");
2341 if (fws->fws_wq == NULL) {
84bcc0c3
AS		 2342 brcmf_err("workqueue creation failed\n");
2343 rc = -EBADF;
2344 goto fail;
2345 }
0a4254be 2346 INIT_WORK(&fws->fws_dequeue_work, brcmf_fws_dequeue_worker);
84bcc0c3 2347
290fb763 2348 /* enable firmware signalling if fcmode active */
0a4254be 2349 if (fws->fcmode != BRCMF_FWS_FCMODE_NONE)
290fb763 2350 tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS |
33753d47 2351 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS |
87edd891
AS		 2352 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE |
2353 BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE;
290fb763 2354
a786b38d
AS		 2355 rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP,
2356 brcmf_fws_notify_credit_map);
d9337414 2357 if (rc < 0) {
a786b38d 2358 brcmf_err("register credit map handler failed\n");
d9337414
AS		 2359 goto fail;
2360 }
7d747037
HM		 2361 rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT,
2362 brcmf_fws_notify_bcmc_credit_support);
2363 if (rc < 0) {
2364 brcmf_err("register bcmc credit handler failed\n");
2365 brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP);
2366 goto fail;
2367 }
d9337414 2368
0a4254be 2369 /* Setting the iovar may fail if feature is unsupported
a786b38d 2370 * so leave the rc as is so driver initialization can
0a4254be 2371 * continue. Set mode back to none indicating not enabled.
a786b38d 2372 */
0a4254be 2373 fws->fw_signals = true;
46f3b6ee
AS		 2374 ifp = brcmf_get_ifp(drvr, 0);
2375 if (brcmf_fil_iovar_int_set(ifp, "tlv", tlv)) {
a786b38d 2376 brcmf_err("failed to set bdcv2 tlv signaling\n");
0a4254be
HM		 2377 fws->fcmode = BRCMF_FWS_FCMODE_NONE;
2378 fws->fw_signals = false;
d9337414
AS		 2379 }
2380
46f3b6ee 2381 if (brcmf_fil_iovar_int_set(ifp, "ampdu_hostreorder", 1))
87edd891
AS		 2382 brcmf_dbg(INFO, "enabling AMPDU host-reorder failed\n");
2383
1e86d696 2384 /* Enable seq number reuse, if supported */
46f3b6ee 2385 if (brcmf_fil_iovar_int_get(ifp, "wlfc_mode", &mode) == 0) {
1e86d696
HM		 2386 if (BRCMF_FWS_MODE_GET_REUSESEQ(mode)) {
2387 mode = 0;
2388 BRCMF_FWS_MODE_SET_REUSESEQ(mode, 1);
46f3b6ee 2389 if (brcmf_fil_iovar_int_set(ifp,
1e86d696
HM		 2390 "wlfc_mode", mode) == 0) {
2391 BRCMF_FWS_MODE_SET_REUSESEQ(fws->mode, 1);
2392 }
2393 }
2394 }
2395
0a4254be
HM		 2396 brcmf_fws_hanger_init(&fws->hanger);
2397 brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0);
2398 brcmf_fws_macdesc_set_name(fws, &fws->desc.other);
2399 brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT,
84bcc0c3 2400 BRCMF_FWS_PSQ_LEN);
d9337414
AS		 2401
2402 /* create debugfs file for statistics */
82d957e0
AS		 2403 brcmf_debugfs_add_entry(drvr, "fws_stats",
2404 brcmf_debugfs_fws_stats_read);
d9337414 2405
8071fd61 2406 brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n",
0a4254be 2407 fws->fw_signals ? "enabled" : "disabled", tlv);
d9337414
AS		 2408 return 0;
2409
2410fail:
d9337414
AS		 2411 brcmf_fws_deinit(drvr);
2412 return rc;
2413}
2414
2415void brcmf_fws_deinit(struct brcmf_pub *drvr)
2416{
2417 struct brcmf_fws_info *fws = drvr->fws;
d9337414 2418
47829f4f
AS		 2419 if (!fws)
2420 return;
2421
a786b38d
AS		 2422 if (drvr->fws->fws_wq)
2423 destroy_workqueue(drvr->fws->fws_wq);
2424
d9337414 2425 /* cleanup */
3f4f910f 2426 brcmf_fws_lock(fws);
d9337414
AS		 2427 brcmf_fws_cleanup(fws, -1);
2428 drvr->fws = NULL;
3f4f910f 2429 brcmf_fws_unlock(fws);
d9337414
AS		 2430
2431 /* free top structure */
2432 kfree(fws);
2433}
2434
b073ac1f
RM		 2435bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws)
2436{
2437 return !fws->avoid_queueing;
2438}
2439
c7f34a69
AS		 2440bool brcmf_fws_fc_active(struct brcmf_fws_info *fws)
2441{
0a4254be 2442 if (!fws->creditmap_received)
c7f34a69
AS		 2443 return false;
2444
c7f34a69
AS		 2445 return fws->fcmode != BRCMF_FWS_FCMODE_NONE;
2446}
0f8b5cc5
AS		 2447
2448void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb)
2449{
fa587d4b 2450 u32 hslot;
0f8b5cc5 2451
c7773fc1
AS		 2452 if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) {
2453 brcmu_pkt_buf_free_skb(skb);
2454 return;
2455 }
3f4f910f 2456 brcmf_fws_lock(fws);
fa587d4b 2457 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
1e86d696 2458 brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0, 0);
3f4f910f 2459 brcmf_fws_unlock(fws);
0f8b5cc5 2460}
df50f756
HM		 2461
2462void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
2463{
2464 struct brcmf_fws_info *fws = drvr->fws;
82bc9ab6
AVS		 2465 struct brcmf_if *ifp;
2466 int i;
df50f756 2467
82bc9ab6
AVS		 2468 if (fws->avoid_queueing) {
2469 for (i = 0; i < BRCMF_MAX_IFS; i++) {
2470 ifp = drvr->iflist[i];
2471 if (!ifp || !ifp->ndev)
2472 continue;
2473 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW,
2474 flow_blocked);
2475 }
2476 } else {
2477 fws->bus_flow_blocked = flow_blocked;
2478 if (!flow_blocked)
2479 brcmf_fws_schedule_deq(fws);
2480 else
2481 fws->stats.bus_flow_block++;
2482 }
df50f756 2483}
Ubuntu Artful kernel mirror