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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" |
349e7104 AS |
39 | |
40 | /** | |
41 | * DOC: Firmware Signalling | |
42 | * | |
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. | |
46 | */ | |
47 | ||
48 | /* | |
49 | * single definition for firmware-driver flow control tlv's. | |
50 | * | |
51 | * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length). | |
52 | * A length value 0 indicates variable length tlv. | |
53 | */ | |
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) \ | |
94607238 | 65 | BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \ |
349e7104 AS |
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) | |
72 | ||
3edc1cff | 73 | /* |
349e7104 AS |
74 | * enum brcmf_fws_tlv_type - definition of tlv identifiers. |
75 | */ | |
76 | #define BRCMF_FWS_TLV_DEF(name, id, len) \ | |
77 | BRCMF_FWS_TYPE_ ## name = id, | |
78 | enum brcmf_fws_tlv_type { | |
79 | BRCMF_FWS_TLV_DEFLIST | |
80 | BRCMF_FWS_TYPE_INVALID | |
81 | }; | |
82 | #undef BRCMF_FWS_TLV_DEF | |
83 | ||
3edc1cff AS |
84 | /* |
85 | * enum brcmf_fws_tlv_len - definition of tlv lengths. | |
86 | */ | |
87 | #define BRCMF_FWS_TLV_DEF(name, id, len) \ | |
88 | BRCMF_FWS_TYPE_ ## name ## _LEN = (len), | |
89 | enum brcmf_fws_tlv_len { | |
90 | BRCMF_FWS_TLV_DEFLIST | |
91 | }; | |
92 | #undef BRCMF_FWS_TLV_DEF | |
93 | ||
349e7104 | 94 | #ifdef DEBUG |
3edc1cff | 95 | /* |
349e7104 AS |
96 | * brcmf_fws_tlv_names - array of tlv names. |
97 | */ | |
98 | #define BRCMF_FWS_TLV_DEF(name, id, len) \ | |
99 | { id, #name }, | |
100 | static struct { | |
101 | enum brcmf_fws_tlv_type id; | |
102 | const char *name; | |
103 | } brcmf_fws_tlv_names[] = { | |
104 | BRCMF_FWS_TLV_DEFLIST | |
105 | }; | |
106 | #undef BRCMF_FWS_TLV_DEF | |
107 | ||
1e86d696 | 108 | |
349e7104 AS |
109 | static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) |
110 | { | |
111 | int i; | |
112 | ||
113 | for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++) | |
114 | if (brcmf_fws_tlv_names[i].id == id) | |
115 | return brcmf_fws_tlv_names[i].name; | |
116 | ||
117 | return "INVALID"; | |
118 | } | |
119 | #else | |
120 | static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) | |
121 | { | |
122 | return "NODEBUG"; | |
123 | } | |
124 | #endif /* DEBUG */ | |
125 | ||
9a9e405f AS |
126 | /* |
127 | * The PKTTAG tlv has additional bytes when firmware-signalling | |
128 | * mode has REUSESEQ flag set. | |
129 | */ | |
130 | #define BRCMF_FWS_TYPE_SEQ_LEN 2 | |
131 | ||
3edc1cff | 132 | /* |
349e7104 AS |
133 | * flags used to enable tlv signalling from firmware. |
134 | */ | |
bb8c8063 AS |
135 | #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001 |
136 | #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002 | |
137 | #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004 | |
138 | #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008 | |
139 | #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010 | |
140 | #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020 | |
141 | #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040 | |
142 | ||
349e7104 | 143 | #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32 |
349e7104 AS |
144 | #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff |
145 | ||
146 | #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0 | |
147 | #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1 | |
84bcc0c3 AS |
148 | #define BRCMF_FWS_FLOWCONTROL_HIWATER 128 |
149 | #define BRCMF_FWS_FLOWCONTROL_LOWATER 64 | |
349e7104 | 150 | |
ae664609 | 151 | #define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2) |
bb8c8063 AS |
152 | #define BRCMF_FWS_PSQ_LEN 256 |
153 | ||
3edc1cff AS |
154 | #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01 |
155 | #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02 | |
156 | ||
1e86d696 HM |
157 | #define BRCMF_FWS_RET_OK_NOSCHEDULE 0 |
158 | #define BRCMF_FWS_RET_OK_SCHEDULE 1 | |
159 | ||
160 | #define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3 /* seq reuse */ | |
161 | #define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \ | |
162 | ((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \ | |
163 | (((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | |
164 | #define BRCMF_FWS_MODE_GET_REUSESEQ(x) \ | |
165 | (((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1) | |
a5e9d805 | 166 | |
ebb93883 AS |
167 | /** |
168 | * enum brcmf_fws_skb_state - indicates processing state of skb. | |
3edc1cff AS |
169 | * |
170 | * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver. | |
171 | * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue. | |
172 | * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware. | |
c7773fc1 | 173 | * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info. |
ebb93883 AS |
174 | */ |
175 | enum brcmf_fws_skb_state { | |
3edc1cff AS |
176 | BRCMF_FWS_SKBSTATE_NEW, |
177 | BRCMF_FWS_SKBSTATE_DELAYED, | |
c7773fc1 AS |
178 | BRCMF_FWS_SKBSTATE_SUPPRESSED, |
179 | BRCMF_FWS_SKBSTATE_TIM | |
ebb93883 AS |
180 | }; |
181 | ||
182 | /** | |
183 | * struct brcmf_skbuff_cb - control buffer associated with skbuff. | |
184 | * | |
5491c11c | 185 | * @bus_flags: 2 bytes reserved for bus specific parameters |
ebb93883 | 186 | * @if_flags: holds interface index and packet related flags. |
ebb93883 | 187 | * @htod: host to device packet identifier (used in PKTTAG tlv). |
1e86d696 | 188 | * @htod_seq: this 16-bit is original seq number for every suppress packet. |
ebb93883 AS |
189 | * @state: transmit state of the packet. |
190 | * @mac: descriptor related to destination for this packet. | |
191 | * | |
192 | * This information is stored in control buffer struct sk_buff::cb, which | |
193 | * provides 48 bytes of storage so this structure should not exceed that. | |
194 | */ | |
195 | struct brcmf_skbuff_cb { | |
5491c11c | 196 | u16 bus_flags; |
ebb93883 | 197 | u16 if_flags; |
ebb93883 | 198 | u32 htod; |
1e86d696 | 199 | u16 htod_seq; |
ebb93883 AS |
200 | enum brcmf_fws_skb_state state; |
201 | struct brcmf_fws_mac_descriptor *mac; | |
202 | }; | |
203 | ||
3edc1cff | 204 | /* |
ebb93883 AS |
205 | * macro casting skbuff control buffer to struct brcmf_skbuff_cb. |
206 | */ | |
207 | #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb)) | |
208 | ||
3edc1cff | 209 | /* |
ebb93883 AS |
210 | * sk_buff control if flags |
211 | * | |
fa587d4b | 212 | * b[11] - packet sent upon firmware request. |
ebb93883 AS |
213 | * b[10] - packet only contains signalling data. |
214 | * b[9] - packet is a tx packet. | |
fa587d4b | 215 | * b[8] - packet used requested credit |
ebb93883 | 216 | * b[7] - interface in AP mode. |
ebb93883 AS |
217 | * b[3:0] - interface index. |
218 | */ | |
219 | #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800 | |
220 | #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11 | |
221 | #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400 | |
222 | #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10 | |
223 | #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200 | |
224 | #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9 | |
fa587d4b HM |
225 | #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100 |
226 | #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8 | |
ebb93883 AS |
227 | #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080 |
228 | #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7 | |
ebb93883 AS |
229 | #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f |
230 | #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0 | |
231 | ||
232 | #define brcmf_skb_if_flags_set_field(skb, field, value) \ | |
233 | brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \ | |
234 | BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ | |
235 | BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value)) | |
236 | #define brcmf_skb_if_flags_get_field(skb, field) \ | |
237 | brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \ | |
238 | BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ | |
239 | BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT) | |
240 | ||
3edc1cff | 241 | /* |
ebb93883 AS |
242 | * sk_buff control packet identifier |
243 | * | |
244 | * 32-bit packet identifier used in PKTTAG tlv from host to dongle. | |
245 | * | |
246 | * - Generated at the host (e.g. dhd) | |
247 | * - Seen as a generic sequence number by firmware except for the flags field. | |
248 | * | |
249 | * Generation : b[31] => generation number for this packet [host->fw] | |
250 | * OR, current generation number [fw->host] | |
251 | * Flags : b[30:27] => command, status flags | |
252 | * FIFO-AC : b[26:24] => AC-FIFO id | |
253 | * h-slot : b[23:8] => hanger-slot | |
254 | * freerun : b[7:0] => A free running counter | |
255 | */ | |
256 | #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000 | |
257 | #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31 | |
258 | #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000 | |
259 | #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27 | |
260 | #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000 | |
261 | #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24 | |
262 | #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00 | |
263 | #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8 | |
264 | #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff | |
be4910ad | 265 | #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0 |
ebb93883 AS |
266 | |
267 | #define brcmf_skb_htod_tag_set_field(skb, field, value) \ | |
e2432b67 | 268 | brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \ |
ebb93883 AS |
269 | BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
270 | BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value)) | |
271 | #define brcmf_skb_htod_tag_get_field(skb, field) \ | |
e2432b67 | 272 | brcmu_maskget32(brcmf_skbcb(skb)->htod, \ |
ebb93883 AS |
273 | BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
274 | BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT) | |
275 | ||
1e86d696 HM |
276 | #define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000 |
277 | #define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13 | |
278 | #define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000 | |
279 | #define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12 | |
280 | #define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff | |
281 | #define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0 | |
282 | ||
283 | #define brcmf_skb_htod_seq_set_field(skb, field, value) \ | |
284 | brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \ | |
285 | BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ | |
286 | BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value)) | |
287 | #define brcmf_skb_htod_seq_get_field(skb, field) \ | |
288 | brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \ | |
289 | BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ | |
290 | BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT) | |
291 | ||
3edc1cff AS |
292 | #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000 |
293 | #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31 | |
294 | #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000 | |
295 | #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27 | |
296 | #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000 | |
297 | #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24 | |
298 | #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00 | |
299 | #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8 | |
1e86d696 HM |
300 | #define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF |
301 | #define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0 | |
3edc1cff AS |
302 | |
303 | #define brcmf_txstatus_get_field(txs, field) \ | |
304 | brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \ | |
305 | BRCMF_FWS_TXSTAT_ ## field ## _SHIFT) | |
306 | ||
1aac1e91 AS |
307 | /* How long to defer borrowing in jiffies */ |
308 | #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10) | |
309 | ||
3edc1cff AS |
310 | /** |
311 | * enum brcmf_fws_fifo - fifo indices used by dongle firmware. | |
312 | * | |
c7773fc1 | 313 | * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background. |
3edc1cff AS |
314 | * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic. |
315 | * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic. | |
316 | * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic. | |
317 | * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic. | |
318 | * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only). | |
319 | * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only). | |
320 | * @BRCMF_FWS_FIFO_COUNT: number of fifos. | |
321 | */ | |
322 | enum brcmf_fws_fifo { | |
c7773fc1 AS |
323 | BRCMF_FWS_FIFO_FIRST, |
324 | BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST, | |
3edc1cff AS |
325 | BRCMF_FWS_FIFO_AC_BE, |
326 | BRCMF_FWS_FIFO_AC_VI, | |
327 | BRCMF_FWS_FIFO_AC_VO, | |
328 | BRCMF_FWS_FIFO_BCMC, | |
329 | BRCMF_FWS_FIFO_ATIM, | |
330 | BRCMF_FWS_FIFO_COUNT | |
331 | }; | |
332 | ||
333 | /** | |
334 | * enum brcmf_fws_txstatus - txstatus flag values. | |
335 | * | |
336 | * @BRCMF_FWS_TXSTATUS_DISCARD: | |
337 | * host is free to discard the packet. | |
338 | * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS: | |
339 | * 802.11 core suppressed the packet. | |
340 | * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS: | |
341 | * firmware suppress the packet as device is already in PS mode. | |
342 | * @BRCMF_FWS_TXSTATUS_FW_TOSSED: | |
343 | * firmware tossed the packet. | |
fa587d4b HM |
344 | * @BRCMF_FWS_TXSTATUS_HOST_TOSSED: |
345 | * host tossed the packet. | |
3edc1cff AS |
346 | */ |
347 | enum brcmf_fws_txstatus { | |
348 | BRCMF_FWS_TXSTATUS_DISCARD, | |
349 | BRCMF_FWS_TXSTATUS_CORE_SUPPRESS, | |
350 | BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS, | |
fa587d4b HM |
351 | BRCMF_FWS_TXSTATUS_FW_TOSSED, |
352 | BRCMF_FWS_TXSTATUS_HOST_TOSSED | |
3edc1cff AS |
353 | }; |
354 | ||
c7f34a69 AS |
355 | enum brcmf_fws_fcmode { |
356 | BRCMF_FWS_FCMODE_NONE, | |
357 | BRCMF_FWS_FCMODE_IMPLIED_CREDIT, | |
358 | BRCMF_FWS_FCMODE_EXPLICIT_CREDIT | |
359 | }; | |
360 | ||
84bcc0c3 AS |
361 | enum brcmf_fws_mac_desc_state { |
362 | BRCMF_FWS_STATE_OPEN = 1, | |
363 | BRCMF_FWS_STATE_CLOSE | |
364 | }; | |
365 | ||
bb8c8063 AS |
366 | /** |
367 | * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface | |
368 | * | |
369 | * @occupied: slot is in use. | |
ce814c1b | 370 | * @mac_handle: handle for mac entry determined by firmware. |
bb8c8063 AS |
371 | * @interface_id: interface index. |
372 | * @state: current state. | |
3edc1cff AS |
373 | * @suppressed: mac entry is suppressed. |
374 | * @generation: generation bit. | |
bb8c8063 AS |
375 | * @ac_bitmap: ac queue bitmap. |
376 | * @requested_credit: credits requested by firmware. | |
377 | * @ea: ethernet address. | |
3edc1cff | 378 | * @seq: per-node free-running sequence. |
bb8c8063 | 379 | * @psq: power-save queue. |
3edc1cff | 380 | * @transit_count: packet in transit to firmware. |
bb8c8063 AS |
381 | */ |
382 | struct brcmf_fws_mac_descriptor { | |
8071fd61 | 383 | char name[16]; |
bb8c8063 | 384 | u8 occupied; |
ce814c1b | 385 | u8 mac_handle; |
bb8c8063 AS |
386 | u8 interface_id; |
387 | u8 state; | |
3edc1cff AS |
388 | bool suppressed; |
389 | u8 generation; | |
bb8c8063 AS |
390 | u8 ac_bitmap; |
391 | u8 requested_credit; | |
84bcc0c3 | 392 | u8 requested_packet; |
bb8c8063 | 393 | u8 ea[ETH_ALEN]; |
3edc1cff | 394 | u8 seq[BRCMF_FWS_FIFO_COUNT]; |
bb8c8063 | 395 | struct pktq psq; |
3edc1cff | 396 | int transit_count; |
84bcc0c3 AS |
397 | int suppr_transit_count; |
398 | bool send_tim_signal; | |
399 | u8 traffic_pending_bmp; | |
400 | u8 traffic_lastreported_bmp; | |
bb8c8063 AS |
401 | }; |
402 | ||
6971280a AS |
403 | #define BRCMF_FWS_HANGER_MAXITEMS 1024 |
404 | ||
405 | /** | |
406 | * enum brcmf_fws_hanger_item_state - state of hanger item. | |
407 | * | |
3edc1cff AS |
408 | * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use. |
409 | * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use. | |
410 | * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed. | |
6971280a AS |
411 | */ |
412 | enum brcmf_fws_hanger_item_state { | |
3edc1cff AS |
413 | BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1, |
414 | BRCMF_FWS_HANGER_ITEM_STATE_INUSE, | |
415 | BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED | |
6971280a AS |
416 | }; |
417 | ||
418 | ||
419 | /** | |
420 | * struct brcmf_fws_hanger_item - single entry for tx pending packet. | |
421 | * | |
422 | * @state: entry is either free or occupied. | |
6971280a AS |
423 | * @pkt: packet itself. |
424 | */ | |
425 | struct brcmf_fws_hanger_item { | |
426 | enum brcmf_fws_hanger_item_state state; | |
6971280a AS |
427 | struct sk_buff *pkt; |
428 | }; | |
429 | ||
430 | /** | |
431 | * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus. | |
432 | * | |
6971280a AS |
433 | * @pushed: packets pushed to await txstatus. |
434 | * @popped: packets popped upon handling txstatus. | |
435 | * @failed_to_push: packets that could not be pushed. | |
436 | * @failed_to_pop: packets that could not be popped. | |
437 | * @failed_slotfind: packets for which failed to find an entry. | |
438 | * @slot_pos: last returned item index for a free entry. | |
439 | * @items: array of hanger items. | |
440 | */ | |
441 | struct brcmf_fws_hanger { | |
442 | u32 pushed; | |
443 | u32 popped; | |
444 | u32 failed_to_push; | |
445 | u32 failed_to_pop; | |
446 | u32 failed_slotfind; | |
447 | u32 slot_pos; | |
448 | struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS]; | |
449 | }; | |
450 | ||
84bcc0c3 AS |
451 | struct brcmf_fws_macdesc_table { |
452 | struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE]; | |
453 | struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS]; | |
454 | struct brcmf_fws_mac_descriptor other; | |
455 | }; | |
456 | ||
82d957e0 AS |
457 | struct brcmf_fws_stats { |
458 | u32 tlv_parse_failed; | |
459 | u32 tlv_invalid_type; | |
460 | u32 header_only_pkt; | |
461 | u32 header_pulls; | |
462 | u32 pkt2bus; | |
463 | u32 send_pkts[5]; | |
464 | u32 requested_sent[5]; | |
465 | u32 generic_error; | |
466 | u32 mac_update_failed; | |
467 | u32 mac_ps_update_failed; | |
468 | u32 if_update_failed; | |
469 | u32 packet_request_failed; | |
470 | u32 credit_request_failed; | |
471 | u32 rollback_success; | |
472 | u32 rollback_failed; | |
473 | u32 delayq_full_error; | |
474 | u32 supprq_full_error; | |
475 | u32 txs_indicate; | |
476 | u32 txs_discard; | |
477 | u32 txs_supp_core; | |
478 | u32 txs_supp_ps; | |
479 | u32 txs_tossed; | |
480 | u32 txs_host_tossed; | |
481 | u32 bus_flow_block; | |
482 | u32 fws_flow_block; | |
483 | }; | |
484 | ||
349e7104 AS |
485 | struct brcmf_fws_info { |
486 | struct brcmf_pub *drvr; | |
3f4f910f HM |
487 | spinlock_t spinlock; |
488 | ulong flags; | |
349e7104 | 489 | struct brcmf_fws_stats stats; |
6971280a | 490 | struct brcmf_fws_hanger hanger; |
c7f34a69 | 491 | enum brcmf_fws_fcmode fcmode; |
0a4254be | 492 | bool fw_signals; |
7d747037 | 493 | bool bcmc_credit_check; |
84bcc0c3 AS |
494 | struct brcmf_fws_macdesc_table desc; |
495 | struct workqueue_struct *fws_wq; | |
496 | struct work_struct fws_dequeue_work; | |
497 | u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT]; | |
3edc1cff | 498 | int fifo_credit[BRCMF_FWS_FIFO_COUNT]; |
1aac1e91 | 499 | int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1]; |
84bcc0c3 AS |
500 | int deq_node_pos[BRCMF_FWS_FIFO_COUNT]; |
501 | u32 fifo_credit_map; | |
502 | u32 fifo_delay_map; | |
1aac1e91 | 503 | unsigned long borrow_defer_timestamp; |
df50f756 | 504 | bool bus_flow_blocked; |
0d24b0ea | 505 | bool creditmap_received; |
1e86d696 | 506 | u8 mode; |
9cd18359 | 507 | bool avoid_queueing; |
3edc1cff AS |
508 | }; |
509 | ||
510 | /* | |
511 | * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index. | |
512 | */ | |
513 | static const int brcmf_fws_prio2fifo[] = { | |
514 | BRCMF_FWS_FIFO_AC_BE, | |
515 | BRCMF_FWS_FIFO_AC_BK, | |
516 | BRCMF_FWS_FIFO_AC_BK, | |
517 | BRCMF_FWS_FIFO_AC_BE, | |
518 | BRCMF_FWS_FIFO_AC_VI, | |
519 | BRCMF_FWS_FIFO_AC_VI, | |
520 | BRCMF_FWS_FIFO_AC_VO, | |
521 | BRCMF_FWS_FIFO_AC_VO | |
349e7104 AS |
522 | }; |
523 | ||
c7f34a69 AS |
524 | static int fcmode; |
525 | module_param(fcmode, int, S_IRUSR); | |
526 | MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control"); | |
527 | ||
bb8c8063 AS |
528 | #define BRCMF_FWS_TLV_DEF(name, id, len) \ |
529 | case BRCMF_FWS_TYPE_ ## name: \ | |
530 | return len; | |
531 | ||
3edc1cff AS |
532 | /** |
533 | * brcmf_fws_get_tlv_len() - returns defined length for given tlv id. | |
534 | * | |
535 | * @fws: firmware-signalling information. | |
536 | * @id: identifier of the TLV. | |
537 | * | |
538 | * Return: the specified length for the given TLV; Otherwise -EINVAL. | |
539 | */ | |
bb8c8063 AS |
540 | static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws, |
541 | enum brcmf_fws_tlv_type id) | |
542 | { | |
543 | switch (id) { | |
544 | BRCMF_FWS_TLV_DEFLIST | |
545 | default: | |
bb8c8063 AS |
546 | fws->stats.tlv_invalid_type++; |
547 | break; | |
548 | } | |
549 | return -EINVAL; | |
550 | } | |
551 | #undef BRCMF_FWS_TLV_DEF | |
552 | ||
3f4f910f HM |
553 | static void brcmf_fws_lock(struct brcmf_fws_info *fws) |
554 | __acquires(&fws->spinlock) | |
555 | { | |
556 | spin_lock_irqsave(&fws->spinlock, fws->flags); | |
557 | } | |
558 | ||
559 | static void brcmf_fws_unlock(struct brcmf_fws_info *fws) | |
560 | __releases(&fws->spinlock) | |
561 | { | |
562 | spin_unlock_irqrestore(&fws->spinlock, fws->flags); | |
563 | } | |
564 | ||
3edc1cff AS |
565 | static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg) |
566 | { | |
567 | u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); | |
568 | return ifidx == *(int *)arg; | |
569 | } | |
570 | ||
571 | static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q, | |
572 | int ifidx) | |
573 | { | |
574 | bool (*matchfn)(struct sk_buff *, void *) = NULL; | |
575 | struct sk_buff *skb; | |
576 | int prec; | |
577 | ||
578 | if (ifidx != -1) | |
579 | matchfn = brcmf_fws_ifidx_match; | |
580 | for (prec = 0; prec < q->num_prec; prec++) { | |
581 | skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); | |
582 | while (skb) { | |
84bcc0c3 | 583 | brcmu_pkt_buf_free_skb(skb); |
3edc1cff AS |
584 | skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); |
585 | } | |
586 | } | |
587 | } | |
588 | ||
6971280a AS |
589 | static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger) |
590 | { | |
591 | int i; | |
592 | ||
6971280a AS |
593 | memset(hanger, 0, sizeof(*hanger)); |
594 | for (i = 0; i < ARRAY_SIZE(hanger->items); i++) | |
3edc1cff | 595 | hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
6971280a AS |
596 | } |
597 | ||
3edc1cff | 598 | static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h) |
6971280a AS |
599 | { |
600 | u32 i; | |
601 | ||
6971280a AS |
602 | i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS; |
603 | ||
604 | while (i != h->slot_pos) { | |
3edc1cff | 605 | if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
6971280a | 606 | h->slot_pos = i; |
84bcc0c3 | 607 | goto done; |
6971280a AS |
608 | } |
609 | i++; | |
610 | if (i == BRCMF_FWS_HANGER_MAXITEMS) | |
611 | i = 0; | |
612 | } | |
613 | brcmf_err("all slots occupied\n"); | |
614 | h->failed_slotfind++; | |
84bcc0c3 AS |
615 | i = BRCMF_FWS_HANGER_MAXITEMS; |
616 | done: | |
84bcc0c3 | 617 | return i; |
6971280a AS |
618 | } |
619 | ||
3edc1cff | 620 | static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h, |
be4910ad | 621 | struct sk_buff *pkt, u32 slot_id) |
6971280a | 622 | { |
6971280a AS |
623 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
624 | return -ENOENT; | |
625 | ||
626 | if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) { | |
627 | brcmf_err("slot is not free\n"); | |
628 | h->failed_to_push++; | |
629 | return -EINVAL; | |
630 | } | |
631 | ||
632 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE; | |
633 | h->items[slot_id].pkt = pkt; | |
6971280a AS |
634 | h->pushed++; |
635 | return 0; | |
636 | } | |
637 | ||
22f44150 | 638 | static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h, |
6971280a AS |
639 | u32 slot_id, struct sk_buff **pktout, |
640 | bool remove_item) | |
641 | { | |
6971280a AS |
642 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
643 | return -ENOENT; | |
644 | ||
645 | if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { | |
646 | brcmf_err("entry not in use\n"); | |
647 | h->failed_to_pop++; | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | *pktout = h->items[slot_id].pkt; | |
652 | if (remove_item) { | |
653 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
654 | h->items[slot_id].pkt = NULL; | |
6971280a AS |
655 | h->popped++; |
656 | } | |
657 | return 0; | |
658 | } | |
659 | ||
84bcc0c3 | 660 | static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h, |
be4910ad | 661 | u32 slot_id) |
6971280a | 662 | { |
6971280a AS |
663 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
664 | return -ENOENT; | |
665 | ||
5631becb | 666 | if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
6971280a AS |
667 | brcmf_err("entry not in use\n"); |
668 | return -EINVAL; | |
669 | } | |
670 | ||
3edc1cff | 671 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED; |
6971280a AS |
672 | return 0; |
673 | } | |
674 | ||
84bcc0c3 | 675 | static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws, |
6971280a AS |
676 | bool (*fn)(struct sk_buff *, void *), |
677 | int ifidx) | |
678 | { | |
84bcc0c3 | 679 | struct brcmf_fws_hanger *h = &fws->hanger; |
6971280a AS |
680 | struct sk_buff *skb; |
681 | int i; | |
682 | enum brcmf_fws_hanger_item_state s; | |
683 | ||
6971280a AS |
684 | for (i = 0; i < ARRAY_SIZE(h->items); i++) { |
685 | s = h->items[i].state; | |
686 | if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE || | |
687 | s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) { | |
688 | skb = h->items[i].pkt; | |
689 | if (fn == NULL || fn(skb, &ifidx)) { | |
690 | /* suppress packets freed from psq */ | |
691 | if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE) | |
692 | brcmu_pkt_buf_free_skb(skb); | |
693 | h->items[i].state = | |
694 | BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
695 | } | |
696 | } | |
697 | } | |
698 | } | |
699 | ||
8071fd61 AS |
700 | static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws, |
701 | struct brcmf_fws_mac_descriptor *desc) | |
702 | { | |
703 | if (desc == &fws->desc.other) | |
704 | strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name)); | |
705 | else if (desc->mac_handle) | |
706 | scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d", | |
707 | desc->mac_handle, desc->interface_id); | |
708 | else | |
709 | scnprintf(desc->name, sizeof(desc->name), "MACIF:%d", | |
710 | desc->interface_id); | |
711 | } | |
712 | ||
1ab083a3 AS |
713 | static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc, |
714 | u8 *addr, u8 ifidx) | |
ce814c1b | 715 | { |
84bcc0c3 AS |
716 | brcmf_dbg(TRACE, |
717 | "enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx); | |
ce814c1b AS |
718 | desc->occupied = 1; |
719 | desc->state = BRCMF_FWS_STATE_OPEN; | |
720 | desc->requested_credit = 0; | |
fa587d4b | 721 | desc->requested_packet = 0; |
ce814c1b AS |
722 | /* depending on use may need ifp->bssidx instead */ |
723 | desc->interface_id = ifidx; | |
724 | desc->ac_bitmap = 0xff; /* update this when handling APSD */ | |
84bcc0c3 AS |
725 | if (addr) |
726 | memcpy(&desc->ea[0], addr, ETH_ALEN); | |
ce814c1b AS |
727 | } |
728 | ||
729 | static | |
1ab083a3 | 730 | void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc) |
ce814c1b AS |
731 | { |
732 | brcmf_dbg(TRACE, | |
733 | "enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id); | |
734 | desc->occupied = 0; | |
735 | desc->state = BRCMF_FWS_STATE_CLOSE; | |
736 | desc->requested_credit = 0; | |
fa587d4b | 737 | desc->requested_packet = 0; |
ce814c1b AS |
738 | } |
739 | ||
740 | static struct brcmf_fws_mac_descriptor * | |
1ab083a3 | 741 | brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea) |
ce814c1b AS |
742 | { |
743 | struct brcmf_fws_mac_descriptor *entry; | |
744 | int i; | |
745 | ||
ce814c1b AS |
746 | if (ea == NULL) |
747 | return ERR_PTR(-EINVAL); | |
748 | ||
84bcc0c3 AS |
749 | entry = &fws->desc.nodes[0]; |
750 | for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) { | |
ce814c1b AS |
751 | if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN)) |
752 | return entry; | |
753 | entry++; | |
754 | } | |
755 | ||
756 | return ERR_PTR(-ENOENT); | |
757 | } | |
758 | ||
3edc1cff | 759 | static struct brcmf_fws_mac_descriptor* |
1ab083a3 | 760 | brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da) |
3edc1cff | 761 | { |
84bcc0c3 | 762 | struct brcmf_fws_mac_descriptor *entry = &fws->desc.other; |
3edc1cff | 763 | bool multicast; |
3edc1cff | 764 | |
f97a7f06 | 765 | multicast = is_multicast_ether_addr(da); |
a7965fbb | 766 | |
5cd51c2b HM |
767 | /* Multicast destination, STA and P2P clients get the interface entry. |
768 | * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations | |
769 | * have their own entry. | |
3edc1cff | 770 | */ |
5cd51c2b | 771 | if (multicast && ifp->fws_desc) { |
3edc1cff | 772 | entry = ifp->fws_desc; |
3edc1cff | 773 | goto done; |
5cd51c2b | 774 | } |
3edc1cff | 775 | |
1ab083a3 | 776 | entry = brcmf_fws_macdesc_lookup(fws, da); |
3edc1cff | 777 | if (IS_ERR(entry)) |
5cd51c2b | 778 | entry = ifp->fws_desc; |
3edc1cff AS |
779 | |
780 | done: | |
3edc1cff AS |
781 | return entry; |
782 | } | |
783 | ||
1ab083a3 AS |
784 | static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws, |
785 | struct brcmf_fws_mac_descriptor *entry, | |
786 | int fifo) | |
84bcc0c3 | 787 | { |
b75c1a30 | 788 | struct brcmf_fws_mac_descriptor *if_entry; |
9fc60224 | 789 | bool closed; |
84bcc0c3 | 790 | |
b75c1a30 AS |
791 | /* for unique destination entries the related interface |
792 | * may be closed. | |
793 | */ | |
794 | if (entry->mac_handle) { | |
795 | if_entry = &fws->desc.iface[entry->interface_id]; | |
796 | if (if_entry->state == BRCMF_FWS_STATE_CLOSE) | |
797 | return true; | |
798 | } | |
9fc60224 AS |
799 | /* an entry is closed when the state is closed and |
800 | * the firmware did not request anything. | |
84bcc0c3 | 801 | */ |
9fc60224 AS |
802 | closed = entry->state == BRCMF_FWS_STATE_CLOSE && |
803 | !entry->requested_credit && !entry->requested_packet; | |
84bcc0c3 | 804 | |
9fc60224 AS |
805 | /* Or firmware does not allow traffic for given fifo */ |
806 | return closed || !(entry->ac_bitmap & BIT(fifo)); | |
84bcc0c3 AS |
807 | } |
808 | ||
1ab083a3 AS |
809 | static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws, |
810 | struct brcmf_fws_mac_descriptor *entry, | |
811 | int ifidx) | |
fba1400a | 812 | { |
3edc1cff | 813 | if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) { |
3edc1cff | 814 | brcmf_fws_psq_flush(fws, &entry->psq, ifidx); |
fba1400a AS |
815 | entry->occupied = !!(entry->psq.len); |
816 | } | |
817 | } | |
818 | ||
e2432b67 AS |
819 | static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws, |
820 | bool (*fn)(struct sk_buff *, void *), | |
821 | int ifidx) | |
822 | { | |
823 | struct brcmf_fws_hanger_item *hi; | |
824 | struct pktq *txq; | |
825 | struct sk_buff *skb; | |
826 | int prec; | |
827 | u32 hslot; | |
828 | ||
e2432b67 AS |
829 | txq = brcmf_bus_gettxq(fws->drvr->bus_if); |
830 | if (IS_ERR(txq)) { | |
831 | brcmf_dbg(TRACE, "no txq to clean up\n"); | |
832 | return; | |
833 | } | |
834 | ||
835 | for (prec = 0; prec < txq->num_prec; prec++) { | |
836 | skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); | |
837 | while (skb) { | |
838 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); | |
839 | hi = &fws->hanger.items[hslot]; | |
840 | WARN_ON(skb != hi->pkt); | |
841 | hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
842 | brcmu_pkt_buf_free_skb(skb); | |
843 | skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); | |
844 | } | |
845 | } | |
846 | } | |
847 | ||
fba1400a AS |
848 | static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx) |
849 | { | |
850 | int i; | |
851 | struct brcmf_fws_mac_descriptor *table; | |
a3e993c7 | 852 | bool (*matchfn)(struct sk_buff *, void *) = NULL; |
fba1400a | 853 | |
fba1400a AS |
854 | if (fws == NULL) |
855 | return; | |
856 | ||
a3e993c7 AS |
857 | if (ifidx != -1) |
858 | matchfn = brcmf_fws_ifidx_match; | |
859 | ||
fba1400a | 860 | /* cleanup individual nodes */ |
84bcc0c3 AS |
861 | table = &fws->desc.nodes[0]; |
862 | for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) | |
1ab083a3 | 863 | brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx); |
fba1400a | 864 | |
1ab083a3 | 865 | brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx); |
e2432b67 | 866 | brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx); |
84bcc0c3 AS |
867 | brcmf_fws_hanger_cleanup(fws, matchfn, ifidx); |
868 | } | |
869 | ||
7b8a466e | 870 | static u8 brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb) |
84bcc0c3 | 871 | { |
c7773fc1 AS |
872 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; |
873 | u8 *wlh; | |
874 | u16 data_offset = 0; | |
875 | u8 fillers; | |
876 | __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod); | |
1e86d696 | 877 | __le16 pktseq = cpu_to_le16(brcmf_skbcb(skb)->htod_seq); |
c7773fc1 | 878 | |
1e86d696 | 879 | brcmf_dbg(TRACE, "enter: %s, idx=%d hslot=%d htod %X seq %X\n", |
80898a11 | 880 | entry->name, brcmf_skb_if_flags_get_field(skb, INDEX), |
1e86d696 HM |
881 | (le32_to_cpu(pkttag) >> 8) & 0xffff, |
882 | brcmf_skbcb(skb)->htod, brcmf_skbcb(skb)->htod_seq); | |
c7773fc1 AS |
883 | if (entry->send_tim_signal) |
884 | data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; | |
1e86d696 HM |
885 | if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) |
886 | data_offset += BRCMF_FWS_TYPE_SEQ_LEN; | |
c7773fc1 AS |
887 | /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */ |
888 | data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN; | |
889 | fillers = round_up(data_offset, 4) - data_offset; | |
890 | data_offset += fillers; | |
891 | ||
892 | skb_push(skb, data_offset); | |
893 | wlh = skb->data; | |
894 | ||
895 | wlh[0] = BRCMF_FWS_TYPE_PKTTAG; | |
896 | wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN; | |
897 | memcpy(&wlh[2], &pkttag, sizeof(pkttag)); | |
1e86d696 HM |
898 | if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { |
899 | wlh[1] += BRCMF_FWS_TYPE_SEQ_LEN; | |
900 | memcpy(&wlh[2 + BRCMF_FWS_TYPE_PKTTAG_LEN], &pktseq, | |
901 | sizeof(pktseq)); | |
902 | } | |
903 | wlh += wlh[1] + 2; | |
c7773fc1 AS |
904 | |
905 | if (entry->send_tim_signal) { | |
906 | entry->send_tim_signal = 0; | |
907 | wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP; | |
908 | wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; | |
909 | wlh[2] = entry->mac_handle; | |
910 | wlh[3] = entry->traffic_pending_bmp; | |
80898a11 AS |
911 | brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n", |
912 | entry->mac_handle, entry->traffic_pending_bmp); | |
c7773fc1 AS |
913 | wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2; |
914 | entry->traffic_lastreported_bmp = entry->traffic_pending_bmp; | |
84bcc0c3 | 915 | } |
c7773fc1 AS |
916 | if (fillers) |
917 | memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers); | |
918 | ||
7b8a466e | 919 | return (u8)(data_offset >> 2); |
c7773fc1 AS |
920 | } |
921 | ||
922 | static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws, | |
923 | struct brcmf_fws_mac_descriptor *entry, | |
4e89dfca | 924 | int fifo, bool send_immediately) |
c7773fc1 AS |
925 | { |
926 | struct sk_buff *skb; | |
c7773fc1 AS |
927 | struct brcmf_skbuff_cb *skcb; |
928 | s32 err; | |
929 | u32 len; | |
7b8a466e HM |
930 | u8 data_offset; |
931 | int ifidx; | |
c7773fc1 AS |
932 | |
933 | /* check delayedQ and suppressQ in one call using bitmap */ | |
4e89dfca AS |
934 | if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0) |
935 | entry->traffic_pending_bmp &= ~NBITVAL(fifo); | |
c7773fc1 | 936 | else |
4e89dfca | 937 | entry->traffic_pending_bmp |= NBITVAL(fifo); |
c7773fc1 AS |
938 | |
939 | entry->send_tim_signal = false; | |
84bcc0c3 AS |
940 | if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp) |
941 | entry->send_tim_signal = true; | |
c7773fc1 AS |
942 | if (send_immediately && entry->send_tim_signal && |
943 | entry->state == BRCMF_FWS_STATE_CLOSE) { | |
944 | /* create a dummy packet and sent that. The traffic */ | |
945 | /* bitmap info will automatically be attached to that packet */ | |
946 | len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 + | |
1e86d696 | 947 | BRCMF_FWS_TYPE_SEQ_LEN + |
c7773fc1 AS |
948 | BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 + |
949 | 4 + fws->drvr->hdrlen; | |
950 | skb = brcmu_pkt_buf_get_skb(len); | |
951 | if (skb == NULL) | |
952 | return false; | |
953 | skb_pull(skb, len); | |
954 | skcb = brcmf_skbcb(skb); | |
955 | skcb->mac = entry; | |
956 | skcb->state = BRCMF_FWS_SKBSTATE_TIM; | |
1e86d696 HM |
957 | skcb->htod = 0; |
958 | skcb->htod_seq = 0; | |
7b8a466e HM |
959 | data_offset = brcmf_fws_hdrpush(fws, skb); |
960 | ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); | |
961 | brcmf_fws_unlock(fws); | |
962 | err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); | |
963 | brcmf_fws_lock(fws); | |
c7773fc1 AS |
964 | if (err) |
965 | brcmu_pkt_buf_free_skb(skb); | |
966 | return true; | |
967 | } | |
968 | return false; | |
84bcc0c3 AS |
969 | } |
970 | ||
971 | static void | |
972 | brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq, | |
973 | u8 if_id) | |
974 | { | |
46f3b6ee | 975 | struct brcmf_if *ifp = brcmf_get_ifp(fws->drvr, if_id); |
84bcc0c3 | 976 | |
84bcc0c3 AS |
977 | if (WARN_ON(!ifp)) |
978 | return; | |
979 | ||
980 | if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && | |
981 | pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER) | |
982 | brcmf_txflowblock_if(ifp, | |
983 | BRCMF_NETIF_STOP_REASON_FWS_FC, false); | |
984 | if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && | |
5631becb AS |
985 | pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) { |
986 | fws->stats.fws_flow_block++; | |
84bcc0c3 | 987 | brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true); |
5631becb | 988 | } |
84bcc0c3 | 989 | return; |
fba1400a AS |
990 | } |
991 | ||
349e7104 AS |
992 | static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi) |
993 | { | |
994 | brcmf_dbg(CTL, "rssi %d\n", rssi); | |
995 | return 0; | |
996 | } | |
997 | ||
ce814c1b AS |
998 | static |
999 | int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data) | |
1000 | { | |
1001 | struct brcmf_fws_mac_descriptor *entry, *existing; | |
1002 | u8 mac_handle; | |
1003 | u8 ifidx; | |
1004 | u8 *addr; | |
1005 | ||
1006 | mac_handle = *data++; | |
1007 | ifidx = *data++; | |
1008 | addr = data; | |
1009 | ||
84bcc0c3 | 1010 | entry = &fws->desc.nodes[mac_handle & 0x1F]; |
ce814c1b | 1011 | if (type == BRCMF_FWS_TYPE_MACDESC_DEL) { |
9a83f1ec | 1012 | if (entry->occupied) { |
8071fd61 AS |
1013 | brcmf_dbg(TRACE, "deleting %s mac %pM\n", |
1014 | entry->name, addr); | |
3f4f910f | 1015 | brcmf_fws_lock(fws); |
1ab083a3 AS |
1016 | brcmf_fws_macdesc_cleanup(fws, entry, -1); |
1017 | brcmf_fws_macdesc_deinit(entry); | |
3f4f910f | 1018 | brcmf_fws_unlock(fws); |
9a83f1ec | 1019 | } else |
ce814c1b | 1020 | fws->stats.mac_update_failed++; |
ce814c1b AS |
1021 | return 0; |
1022 | } | |
1023 | ||
1ab083a3 | 1024 | existing = brcmf_fws_macdesc_lookup(fws, addr); |
ce814c1b AS |
1025 | if (IS_ERR(existing)) { |
1026 | if (!entry->occupied) { | |
3f4f910f | 1027 | brcmf_fws_lock(fws); |
ce814c1b | 1028 | entry->mac_handle = mac_handle; |
1ab083a3 | 1029 | brcmf_fws_macdesc_init(entry, addr, ifidx); |
8071fd61 | 1030 | brcmf_fws_macdesc_set_name(fws, entry); |
ce814c1b AS |
1031 | brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
1032 | BRCMF_FWS_PSQ_LEN); | |
3f4f910f | 1033 | brcmf_fws_unlock(fws); |
8071fd61 | 1034 | brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr); |
ce814c1b AS |
1035 | } else { |
1036 | fws->stats.mac_update_failed++; | |
1037 | } | |
1038 | } else { | |
1039 | if (entry != existing) { | |
8071fd61 | 1040 | brcmf_dbg(TRACE, "copy mac %s\n", existing->name); |
3f4f910f | 1041 | brcmf_fws_lock(fws); |
ce814c1b AS |
1042 | memcpy(entry, existing, |
1043 | offsetof(struct brcmf_fws_mac_descriptor, psq)); | |
1044 | entry->mac_handle = mac_handle; | |
1ab083a3 | 1045 | brcmf_fws_macdesc_deinit(existing); |
8071fd61 | 1046 | brcmf_fws_macdesc_set_name(fws, entry); |
3f4f910f | 1047 | brcmf_fws_unlock(fws); |
8071fd61 AS |
1048 | brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name, |
1049 | addr); | |
ce814c1b AS |
1050 | } else { |
1051 | brcmf_dbg(TRACE, "use existing\n"); | |
1052 | WARN_ON(entry->mac_handle != mac_handle); | |
1053 | /* TODO: what should we do here: continue, reinit, .. */ | |
1054 | } | |
1055 | } | |
1056 | return 0; | |
1057 | } | |
1058 | ||
33753d47 AS |
1059 | static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws, |
1060 | u8 type, u8 *data) | |
1061 | { | |
1062 | struct brcmf_fws_mac_descriptor *entry; | |
1063 | u8 mac_handle; | |
c6a681ab | 1064 | int ret; |
33753d47 AS |
1065 | |
1066 | mac_handle = data[0]; | |
1067 | entry = &fws->desc.nodes[mac_handle & 0x1F]; | |
1068 | if (!entry->occupied) { | |
1069 | fws->stats.mac_ps_update_failed++; | |
1070 | return -ESRCH; | |
1071 | } | |
3f4f910f | 1072 | brcmf_fws_lock(fws); |
c7773fc1 | 1073 | /* a state update should wipe old credits */ |
33753d47 | 1074 | entry->requested_credit = 0; |
c7773fc1 | 1075 | entry->requested_packet = 0; |
33753d47 AS |
1076 | if (type == BRCMF_FWS_TYPE_MAC_OPEN) { |
1077 | entry->state = BRCMF_FWS_STATE_OPEN; | |
c6a681ab | 1078 | ret = BRCMF_FWS_RET_OK_SCHEDULE; |
33753d47 AS |
1079 | } else { |
1080 | entry->state = BRCMF_FWS_STATE_CLOSE; | |
c7773fc1 AS |
1081 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false); |
1082 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false); | |
1083 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false); | |
1084 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true); | |
c6a681ab | 1085 | ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
33753d47 | 1086 | } |
3f4f910f | 1087 | brcmf_fws_unlock(fws); |
c6a681ab | 1088 | return ret; |
33753d47 AS |
1089 | } |
1090 | ||
1091 | static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws, | |
1092 | u8 type, u8 *data) | |
1093 | { | |
1094 | struct brcmf_fws_mac_descriptor *entry; | |
1095 | u8 ifidx; | |
1096 | int ret; | |
1097 | ||
1098 | ifidx = data[0]; | |
1099 | ||
33753d47 AS |
1100 | if (ifidx >= BRCMF_MAX_IFS) { |
1101 | ret = -ERANGE; | |
1102 | goto fail; | |
1103 | } | |
1104 | ||
1105 | entry = &fws->desc.iface[ifidx]; | |
1106 | if (!entry->occupied) { | |
1107 | ret = -ESRCH; | |
1108 | goto fail; | |
1109 | } | |
1110 | ||
8071fd61 AS |
1111 | brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type, |
1112 | entry->name); | |
3f4f910f | 1113 | brcmf_fws_lock(fws); |
33753d47 AS |
1114 | switch (type) { |
1115 | case BRCMF_FWS_TYPE_INTERFACE_OPEN: | |
1116 | entry->state = BRCMF_FWS_STATE_OPEN; | |
c6a681ab AS |
1117 | ret = BRCMF_FWS_RET_OK_SCHEDULE; |
1118 | break; | |
33753d47 AS |
1119 | case BRCMF_FWS_TYPE_INTERFACE_CLOSE: |
1120 | entry->state = BRCMF_FWS_STATE_CLOSE; | |
c6a681ab AS |
1121 | ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
1122 | break; | |
33753d47 AS |
1123 | default: |
1124 | ret = -EINVAL; | |
3f4f910f | 1125 | brcmf_fws_unlock(fws); |
c6a681ab | 1126 | goto fail; |
33753d47 | 1127 | } |
3f4f910f | 1128 | brcmf_fws_unlock(fws); |
c6a681ab AS |
1129 | return ret; |
1130 | ||
33753d47 AS |
1131 | fail: |
1132 | fws->stats.if_update_failed++; | |
1133 | return ret; | |
1134 | } | |
1135 | ||
5f38b683 AS |
1136 | static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type, |
1137 | u8 *data) | |
1138 | { | |
1139 | struct brcmf_fws_mac_descriptor *entry; | |
1140 | ||
1141 | entry = &fws->desc.nodes[data[1] & 0x1F]; | |
1142 | if (!entry->occupied) { | |
1143 | if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) | |
1144 | fws->stats.credit_request_failed++; | |
1145 | else | |
1146 | fws->stats.packet_request_failed++; | |
1147 | return -ESRCH; | |
1148 | } | |
1149 | ||
8071fd61 AS |
1150 | brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n", |
1151 | brcmf_fws_get_tlv_name(type), type, entry->name, | |
1152 | data[0], data[2]); | |
3f4f910f | 1153 | brcmf_fws_lock(fws); |
5f38b683 AS |
1154 | if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) |
1155 | entry->requested_credit = data[0]; | |
1156 | else | |
1157 | entry->requested_packet = data[0]; | |
1158 | ||
1159 | entry->ac_bitmap = data[2]; | |
3f4f910f | 1160 | brcmf_fws_unlock(fws); |
a5e9d805 | 1161 | return BRCMF_FWS_RET_OK_SCHEDULE; |
5f38b683 AS |
1162 | } |
1163 | ||
fa587d4b HM |
1164 | static void |
1165 | brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry, | |
1166 | struct sk_buff *skb) | |
289ec1c7 | 1167 | { |
fa587d4b HM |
1168 | if (entry->requested_credit > 0) { |
1169 | entry->requested_credit--; | |
1170 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); | |
1171 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1); | |
1172 | if (entry->state != BRCMF_FWS_STATE_CLOSE) | |
1173 | brcmf_err("requested credit set while mac not closed!\n"); | |
1174 | } else if (entry->requested_packet > 0) { | |
1175 | entry->requested_packet--; | |
1176 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); | |
1177 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); | |
1178 | if (entry->state != BRCMF_FWS_STATE_CLOSE) | |
1179 | brcmf_err("requested packet set while mac not closed!\n"); | |
289ec1c7 | 1180 | } else { |
fa587d4b HM |
1181 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 0); |
1182 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); | |
289ec1c7 | 1183 | } |
fa587d4b HM |
1184 | } |
1185 | ||
1186 | static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb) | |
1187 | { | |
1188 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; | |
1189 | ||
1190 | if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) && | |
1191 | (entry->state == BRCMF_FWS_STATE_CLOSE)) | |
1192 | entry->requested_credit++; | |
289ec1c7 AS |
1193 | } |
1194 | ||
84bcc0c3 AS |
1195 | static void brcmf_fws_return_credits(struct brcmf_fws_info *fws, |
1196 | u8 fifo, u8 credits) | |
1197 | { | |
1aac1e91 AS |
1198 | int lender_ac; |
1199 | int *borrowed; | |
1200 | int *fifo_credit; | |
1201 | ||
84bcc0c3 AS |
1202 | if (!credits) |
1203 | return; | |
1204 | ||
afc3bbfc HM |
1205 | fws->fifo_credit_map |= 1 << fifo; |
1206 | ||
1aac1e91 AS |
1207 | if ((fifo == BRCMF_FWS_FIFO_AC_BE) && |
1208 | (fws->credits_borrowed[0])) { | |
1209 | for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0; | |
1210 | lender_ac--) { | |
1211 | borrowed = &fws->credits_borrowed[lender_ac]; | |
1212 | if (*borrowed) { | |
1213 | fws->fifo_credit_map |= (1 << lender_ac); | |
1214 | fifo_credit = &fws->fifo_credit[lender_ac]; | |
1215 | if (*borrowed >= credits) { | |
1216 | *borrowed -= credits; | |
1217 | *fifo_credit += credits; | |
1218 | return; | |
1219 | } else { | |
1220 | credits -= *borrowed; | |
1221 | *fifo_credit += *borrowed; | |
1222 | *borrowed = 0; | |
1223 | } | |
1224 | } | |
1225 | } | |
1226 | } | |
1227 | ||
84bcc0c3 AS |
1228 | fws->fifo_credit[fifo] += credits; |
1229 | } | |
1230 | ||
1231 | static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws) | |
1232 | { | |
1233 | /* only schedule dequeue when there are credits for delayed traffic */ | |
0a4254be HM |
1234 | if ((fws->fifo_credit_map & fws->fifo_delay_map) || |
1235 | (!brcmf_fws_fc_active(fws) && fws->fifo_delay_map)) | |
84bcc0c3 AS |
1236 | queue_work(fws->fws_wq, &fws->fws_dequeue_work); |
1237 | } | |
1238 | ||
84bcc0c3 AS |
1239 | static int brcmf_fws_enq(struct brcmf_fws_info *fws, |
1240 | enum brcmf_fws_skb_state state, int fifo, | |
1241 | struct sk_buff *p) | |
1242 | { | |
1243 | int prec = 2 * fifo; | |
1244 | u32 *qfull_stat = &fws->stats.delayq_full_error; | |
84bcc0c3 | 1245 | struct brcmf_fws_mac_descriptor *entry; |
1e86d696 HM |
1246 | struct pktq *pq; |
1247 | struct sk_buff_head *queue; | |
1248 | struct sk_buff *p_head; | |
1249 | struct sk_buff *p_tail; | |
1250 | u32 fr_new; | |
1251 | u32 fr_compare; | |
84bcc0c3 AS |
1252 | |
1253 | entry = brcmf_skbcb(p)->mac; | |
1254 | if (entry == NULL) { | |
1255 | brcmf_err("no mac descriptor found for skb %p\n", p); | |
1256 | return -ENOENT; | |
1257 | } | |
1258 | ||
8071fd61 | 1259 | brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p); |
84bcc0c3 AS |
1260 | if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) { |
1261 | prec += 1; | |
1262 | qfull_stat = &fws->stats.supprq_full_error; | |
84bcc0c3 | 1263 | |
1e86d696 HM |
1264 | /* Fix out of order delivery of frames. Dont assume frame */ |
1265 | /* can be inserted at the end, but look for correct position */ | |
1266 | pq = &entry->psq; | |
1267 | if (pktq_full(pq) || pktq_pfull(pq, prec)) { | |
1268 | *qfull_stat += 1; | |
1269 | return -ENFILE; | |
1270 | } | |
1271 | queue = &pq->q[prec].skblist; | |
1272 | ||
1273 | p_head = skb_peek(queue); | |
1274 | p_tail = skb_peek_tail(queue); | |
1275 | fr_new = brcmf_skb_htod_tag_get_field(p, FREERUN); | |
1276 | ||
1277 | while (p_head != p_tail) { | |
1278 | fr_compare = brcmf_skb_htod_tag_get_field(p_tail, | |
1279 | FREERUN); | |
1280 | /* be sure to handle wrap of 256 */ | |
1281 | if (((fr_new > fr_compare) && | |
1282 | ((fr_new - fr_compare) < 128)) || | |
1283 | ((fr_new < fr_compare) && | |
1284 | ((fr_compare - fr_new) > 128))) | |
1285 | break; | |
1286 | p_tail = skb_queue_prev(queue, p_tail); | |
1287 | } | |
1288 | /* Position found. Determine what to do */ | |
1289 | if (p_tail == NULL) { | |
1290 | /* empty list */ | |
1291 | __skb_queue_tail(queue, p); | |
1292 | } else { | |
1293 | fr_compare = brcmf_skb_htod_tag_get_field(p_tail, | |
1294 | FREERUN); | |
1295 | if (((fr_new > fr_compare) && | |
1296 | ((fr_new - fr_compare) < 128)) || | |
1297 | ((fr_new < fr_compare) && | |
1298 | ((fr_compare - fr_new) > 128))) { | |
1299 | /* After tail */ | |
1300 | __skb_queue_after(queue, p_tail, p); | |
1301 | } else { | |
1302 | /* Before tail */ | |
1303 | __skb_insert(p, p_tail->prev, p_tail, queue); | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /* Complete the counters and statistics */ | |
1308 | pq->len++; | |
1309 | if (pq->hi_prec < prec) | |
1310 | pq->hi_prec = (u8) prec; | |
1311 | } else if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) { | |
84bcc0c3 AS |
1312 | *qfull_stat += 1; |
1313 | return -ENFILE; | |
1314 | } | |
1315 | ||
1316 | /* increment total enqueued packet count */ | |
1317 | fws->fifo_delay_map |= 1 << fifo; | |
1318 | fws->fifo_enqpkt[fifo]++; | |
1319 | ||
1320 | /* update the sk_buff state */ | |
1321 | brcmf_skbcb(p)->state = state; | |
84bcc0c3 AS |
1322 | |
1323 | /* | |
1324 | * A packet has been pushed so update traffic | |
1325 | * availability bitmap, if applicable | |
1326 | */ | |
c7773fc1 | 1327 | brcmf_fws_tim_update(fws, entry, fifo, true); |
84bcc0c3 AS |
1328 | brcmf_fws_flow_control_check(fws, &entry->psq, |
1329 | brcmf_skb_if_flags_get_field(p, INDEX)); | |
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo) | |
1334 | { | |
1335 | struct brcmf_fws_mac_descriptor *table; | |
1336 | struct brcmf_fws_mac_descriptor *entry; | |
1337 | struct sk_buff *p; | |
84bcc0c3 AS |
1338 | int num_nodes; |
1339 | int node_pos; | |
1340 | int prec_out; | |
07529d20 | 1341 | int pmsk; |
84bcc0c3 AS |
1342 | int i; |
1343 | ||
1344 | table = (struct brcmf_fws_mac_descriptor *)&fws->desc; | |
1345 | num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor); | |
1346 | node_pos = fws->deq_node_pos[fifo]; | |
1347 | ||
1348 | for (i = 0; i < num_nodes; i++) { | |
1349 | entry = &table[(node_pos + i) % num_nodes]; | |
b75c1a30 | 1350 | if (!entry->occupied || |
1ab083a3 | 1351 | brcmf_fws_macdesc_closed(fws, entry, fifo)) |
84bcc0c3 AS |
1352 | continue; |
1353 | ||
1354 | if (entry->suppressed) | |
1355 | pmsk = 2; | |
07529d20 AS |
1356 | else |
1357 | pmsk = 3; | |
84bcc0c3 AS |
1358 | p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out); |
1359 | if (p == NULL) { | |
1360 | if (entry->suppressed) { | |
8c5140f6 HM |
1361 | if (entry->suppr_transit_count) |
1362 | continue; | |
84bcc0c3 AS |
1363 | entry->suppressed = false; |
1364 | p = brcmu_pktq_mdeq(&entry->psq, | |
1365 | 1 << (fifo * 2), &prec_out); | |
1366 | } | |
1367 | } | |
1368 | if (p == NULL) | |
1369 | continue; | |
1370 | ||
fa587d4b | 1371 | brcmf_fws_macdesc_use_req_credit(entry, p); |
84bcc0c3 AS |
1372 | |
1373 | /* move dequeue position to ensure fair round-robin */ | |
1374 | fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes; | |
1375 | brcmf_fws_flow_control_check(fws, &entry->psq, | |
1376 | brcmf_skb_if_flags_get_field(p, | |
1377 | INDEX) | |
1378 | ); | |
1379 | /* | |
1380 | * A packet has been picked up, update traffic | |
1381 | * availability bitmap, if applicable | |
1382 | */ | |
c7773fc1 | 1383 | brcmf_fws_tim_update(fws, entry, fifo, false); |
84bcc0c3 AS |
1384 | |
1385 | /* | |
1386 | * decrement total enqueued fifo packets and | |
1387 | * clear delay bitmap if done. | |
1388 | */ | |
1389 | fws->fifo_enqpkt[fifo]--; | |
1390 | if (fws->fifo_enqpkt[fifo] == 0) | |
1391 | fws->fifo_delay_map &= ~(1 << fifo); | |
1392 | goto done; | |
1393 | } | |
1394 | p = NULL; | |
1395 | done: | |
8071fd61 | 1396 | brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p); |
84bcc0c3 AS |
1397 | return p; |
1398 | } | |
1399 | ||
1400 | static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo, | |
03cca20a | 1401 | struct sk_buff *skb, |
53e30ea4 | 1402 | u32 genbit, u16 seq) |
84bcc0c3 AS |
1403 | { |
1404 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; | |
1405 | u32 hslot; | |
1406 | int ret; | |
1407 | ||
1408 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); | |
1409 | ||
1410 | /* this packet was suppressed */ | |
be4910ad | 1411 | if (!entry->suppressed) { |
84bcc0c3 | 1412 | entry->suppressed = true; |
84bcc0c3 | 1413 | entry->suppr_transit_count = entry->transit_count; |
8c5140f6 HM |
1414 | brcmf_dbg(DATA, "suppress %s: transit %d\n", |
1415 | entry->name, entry->transit_count); | |
84bcc0c3 AS |
1416 | } |
1417 | ||
1418 | entry->generation = genbit; | |
1419 | ||
53e30ea4 HM |
1420 | brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit); |
1421 | brcmf_skbcb(skb)->htod_seq = seq; | |
1422 | if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) { | |
1423 | brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1); | |
1424 | brcmf_skb_htod_seq_set_field(skb, FROMFW, 0); | |
1425 | } else { | |
1426 | brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0); | |
4d5504ec | 1427 | } |
53e30ea4 | 1428 | ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb); |
4d5504ec | 1429 | |
84bcc0c3 | 1430 | if (ret != 0) { |
53e30ea4 HM |
1431 | /* suppress q is full drop this packet */ |
1432 | brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true); | |
84bcc0c3 | 1433 | } else { |
53e30ea4 | 1434 | /* Mark suppressed to avoid a double free during wlfc cleanup */ |
be4910ad | 1435 | brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot); |
84bcc0c3 AS |
1436 | } |
1437 | ||
1438 | return ret; | |
1439 | } | |
1440 | ||
3edc1cff | 1441 | static int |
8071fd61 | 1442 | brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot, |
1e86d696 | 1443 | u32 genbit, u16 seq) |
3edc1cff | 1444 | { |
84bcc0c3 | 1445 | u32 fifo; |
3edc1cff | 1446 | int ret; |
84bcc0c3 | 1447 | bool remove_from_hanger = true; |
3edc1cff | 1448 | struct sk_buff *skb; |
8071fd61 | 1449 | struct brcmf_skbuff_cb *skcb; |
3edc1cff | 1450 | struct brcmf_fws_mac_descriptor *entry = NULL; |
796cfb65 | 1451 | struct brcmf_if *ifp; |
3edc1cff | 1452 | |
8071fd61 | 1453 | brcmf_dbg(DATA, "flags %d\n", flags); |
3edc1cff AS |
1454 | |
1455 | if (flags == BRCMF_FWS_TXSTATUS_DISCARD) | |
1456 | fws->stats.txs_discard++; | |
84bcc0c3 AS |
1457 | else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) { |
1458 | fws->stats.txs_supp_core++; | |
1459 | remove_from_hanger = false; | |
1460 | } else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) { | |
1461 | fws->stats.txs_supp_ps++; | |
1462 | remove_from_hanger = false; | |
5631becb | 1463 | } else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED) |
3edc1cff | 1464 | fws->stats.txs_tossed++; |
5631becb AS |
1465 | else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED) |
1466 | fws->stats.txs_host_tossed++; | |
3edc1cff AS |
1467 | else |
1468 | brcmf_err("unexpected txstatus\n"); | |
1469 | ||
1470 | ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, | |
84bcc0c3 | 1471 | remove_from_hanger); |
3edc1cff AS |
1472 | if (ret != 0) { |
1473 | brcmf_err("no packet in hanger slot: hslot=%d\n", hslot); | |
1474 | return ret; | |
1475 | } | |
1476 | ||
8071fd61 AS |
1477 | skcb = brcmf_skbcb(skb); |
1478 | entry = skcb->mac; | |
3edc1cff | 1479 | if (WARN_ON(!entry)) { |
84bcc0c3 AS |
1480 | brcmu_pkt_buf_free_skb(skb); |
1481 | return -EINVAL; | |
3edc1cff | 1482 | } |
8c5140f6 HM |
1483 | entry->transit_count--; |
1484 | if (entry->suppressed && entry->suppr_transit_count) | |
1485 | entry->suppr_transit_count--; | |
3edc1cff | 1486 | |
1e86d696 HM |
1487 | brcmf_dbg(DATA, "%s flags %d htod %X seq %X\n", entry->name, flags, |
1488 | skcb->htod, seq); | |
8071fd61 | 1489 | |
84bcc0c3 AS |
1490 | /* pick up the implicit credit from this packet */ |
1491 | fifo = brcmf_skb_htod_tag_get_field(skb, FIFO); | |
fa587d4b HM |
1492 | if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) || |
1493 | (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) || | |
1494 | (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) { | |
1495 | brcmf_fws_return_credits(fws, fifo, 1); | |
1496 | brcmf_fws_schedule_deq(fws); | |
1497 | } | |
1498 | brcmf_fws_macdesc_return_req_credit(skb); | |
3edc1cff | 1499 | |
796cfb65 AS |
1500 | ret = brcmf_proto_hdrpull(fws->drvr, false, skb, &ifp); |
1501 | if (ret) { | |
53e30ea4 HM |
1502 | brcmu_pkt_buf_free_skb(skb); |
1503 | return -EINVAL; | |
1504 | } | |
84bcc0c3 | 1505 | if (!remove_from_hanger) |
03cca20a | 1506 | ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, |
53e30ea4 | 1507 | genbit, seq); |
8c5140f6 | 1508 | if (remove_from_hanger || ret) |
054e68ad | 1509 | brcmf_txfinalize(ifp, skb, true); |
8c5140f6 | 1510 | |
84bcc0c3 AS |
1511 | return 0; |
1512 | } | |
1513 | ||
1514 | static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws, | |
1515 | u8 *data) | |
1516 | { | |
1517 | int i; | |
1518 | ||
1519 | if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) { | |
1520 | brcmf_dbg(INFO, "ignored\n"); | |
a5e9d805 | 1521 | return BRCMF_FWS_RET_OK_NOSCHEDULE; |
84bcc0c3 AS |
1522 | } |
1523 | ||
8071fd61 | 1524 | brcmf_dbg(DATA, "enter: data %pM\n", data); |
3f4f910f | 1525 | brcmf_fws_lock(fws); |
84bcc0c3 AS |
1526 | for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++) |
1527 | brcmf_fws_return_credits(fws, i, data[i]); | |
1528 | ||
8071fd61 | 1529 | brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map, |
84bcc0c3 | 1530 | fws->fifo_delay_map); |
3f4f910f | 1531 | brcmf_fws_unlock(fws); |
a5e9d805 | 1532 | return BRCMF_FWS_RET_OK_SCHEDULE; |
3edc1cff AS |
1533 | } |
1534 | ||
0f8b5cc5 AS |
1535 | static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data) |
1536 | { | |
a2ffc566 | 1537 | __le32 status_le; |
1e86d696 | 1538 | __le16 seq_le; |
0f8b5cc5 AS |
1539 | u32 status; |
1540 | u32 hslot; | |
84bcc0c3 | 1541 | u32 genbit; |
0f8b5cc5 | 1542 | u8 flags; |
1e86d696 | 1543 | u16 seq; |
0f8b5cc5 AS |
1544 | |
1545 | fws->stats.txs_indicate++; | |
a2ffc566 AS |
1546 | memcpy(&status_le, data, sizeof(status_le)); |
1547 | status = le32_to_cpu(status_le); | |
0f8b5cc5 AS |
1548 | flags = brcmf_txstatus_get_field(status, FLAGS); |
1549 | hslot = brcmf_txstatus_get_field(status, HSLOT); | |
84bcc0c3 | 1550 | genbit = brcmf_txstatus_get_field(status, GENERATION); |
1e86d696 HM |
1551 | if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { |
1552 | memcpy(&seq_le, &data[BRCMF_FWS_TYPE_PKTTAG_LEN], | |
1553 | sizeof(seq_le)); | |
1554 | seq = le16_to_cpu(seq_le); | |
1555 | } else { | |
1556 | seq = 0; | |
1557 | } | |
0f8b5cc5 | 1558 | |
3f4f910f | 1559 | brcmf_fws_lock(fws); |
1e86d696 | 1560 | brcmf_fws_txs_process(fws, flags, hslot, genbit, seq); |
3f4f910f | 1561 | brcmf_fws_unlock(fws); |
c6a681ab | 1562 | return BRCMF_FWS_RET_OK_NOSCHEDULE; |
0f8b5cc5 AS |
1563 | } |
1564 | ||
349e7104 AS |
1565 | static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data) |
1566 | { | |
1567 | __le32 timestamp; | |
1568 | ||
1569 | memcpy(×tamp, &data[2], sizeof(timestamp)); | |
8071fd61 | 1570 | brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1], |
349e7104 AS |
1571 | le32_to_cpu(timestamp)); |
1572 | return 0; | |
1573 | } | |
1574 | ||
43fa635e AS |
1575 | static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp, |
1576 | const struct brcmf_event_msg *e, | |
1577 | void *data) | |
1578 | { | |
1579 | struct brcmf_fws_info *fws = ifp->drvr->fws; | |
1580 | int i; | |
43fa635e AS |
1581 | u8 *credits = data; |
1582 | ||
84bcc0c3 AS |
1583 | if (e->datalen < BRCMF_FWS_FIFO_COUNT) { |
1584 | brcmf_err("event payload too small (%d)\n", e->datalen); | |
1585 | return -EINVAL; | |
1586 | } | |
0d24b0ea HM |
1587 | if (fws->creditmap_received) |
1588 | return 0; | |
1589 | ||
1590 | fws->creditmap_received = true; | |
84bcc0c3 AS |
1591 | |
1592 | brcmf_dbg(TRACE, "enter: credits %pM\n", credits); | |
3f4f910f | 1593 | brcmf_fws_lock(fws); |
84bcc0c3 AS |
1594 | for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) { |
1595 | if (*credits) | |
1596 | fws->fifo_credit_map |= 1 << i; | |
1597 | else | |
1598 | fws->fifo_credit_map &= ~(1 << i); | |
43fa635e | 1599 | fws->fifo_credit[i] = *credits++; |
84bcc0c3 AS |
1600 | } |
1601 | brcmf_fws_schedule_deq(fws); | |
3f4f910f | 1602 | brcmf_fws_unlock(fws); |
43fa635e AS |
1603 | return 0; |
1604 | } | |
1605 | ||
7d747037 HM |
1606 | static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp, |
1607 | const struct brcmf_event_msg *e, | |
1608 | void *data) | |
1609 | { | |
1610 | struct brcmf_fws_info *fws = ifp->drvr->fws; | |
7d747037 | 1611 | |
3f4f910f | 1612 | brcmf_fws_lock(fws); |
7d747037 HM |
1613 | if (fws) |
1614 | fws->bcmc_credit_check = true; | |
3f4f910f | 1615 | brcmf_fws_unlock(fws); |
7d747037 HM |
1616 | return 0; |
1617 | } | |
1618 | ||
c67d41ba | 1619 | void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb) |
349e7104 | 1620 | { |
87edd891 | 1621 | struct brcmf_skb_reorder_data *rd; |
c67d41ba | 1622 | struct brcmf_fws_info *fws = ifp->drvr->fws; |
349e7104 AS |
1623 | u8 *signal_data; |
1624 | s16 data_len; | |
1625 | u8 type; | |
1626 | u8 len; | |
1627 | u8 *data; | |
a5e9d805 AS |
1628 | s32 status; |
1629 | s32 err; | |
349e7104 | 1630 | |
8071fd61 | 1631 | brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n", |
c67d41ba | 1632 | ifp->ifidx, skb->len, siglen); |
349e7104 | 1633 | |
c67d41ba | 1634 | WARN_ON(siglen > skb->len); |
349e7104 | 1635 | |
c67d41ba AS |
1636 | if (!siglen) |
1637 | return; | |
349e7104 | 1638 | /* if flow control disabled, skip to packet data and leave */ |
58b2251e | 1639 | if ((!fws) || (!fws->fw_signals)) { |
c67d41ba AS |
1640 | skb_pull(skb, siglen); |
1641 | return; | |
349e7104 AS |
1642 | } |
1643 | ||
349e7104 | 1644 | fws->stats.header_pulls++; |
c67d41ba | 1645 | data_len = siglen; |
349e7104 AS |
1646 | signal_data = skb->data; |
1647 | ||
a5e9d805 | 1648 | status = BRCMF_FWS_RET_OK_NOSCHEDULE; |
349e7104 AS |
1649 | while (data_len > 0) { |
1650 | /* extract tlv info */ | |
1651 | type = signal_data[0]; | |
1652 | ||
1653 | /* FILLER type is actually not a TLV, but | |
1654 | * a single byte that can be skipped. | |
1655 | */ | |
1656 | if (type == BRCMF_FWS_TYPE_FILLER) { | |
1657 | signal_data += 1; | |
1658 | data_len -= 1; | |
1659 | continue; | |
1660 | } | |
1661 | len = signal_data[1]; | |
1662 | data = signal_data + 2; | |
1663 | ||
8071fd61 AS |
1664 | brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n", |
1665 | brcmf_fws_get_tlv_name(type), type, len, | |
1666 | brcmf_fws_get_tlv_len(fws, type)); | |
2af15580 | 1667 | |
349e7104 AS |
1668 | /* abort parsing when length invalid */ |
1669 | if (data_len < len + 2) | |
1670 | break; | |
1671 | ||
f55d94a6 | 1672 | if (len < brcmf_fws_get_tlv_len(fws, type)) |
bb8c8063 AS |
1673 | break; |
1674 | ||
a5e9d805 | 1675 | err = BRCMF_FWS_RET_OK_NOSCHEDULE; |
349e7104 | 1676 | switch (type) { |
bb8c8063 | 1677 | case BRCMF_FWS_TYPE_COMP_TXSTATUS: |
ce814c1b | 1678 | break; |
87edd891 AS |
1679 | case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS: |
1680 | rd = (struct brcmf_skb_reorder_data *)skb->cb; | |
1681 | rd->reorder = data; | |
1682 | break; | |
bb8c8063 AS |
1683 | case BRCMF_FWS_TYPE_MACDESC_ADD: |
1684 | case BRCMF_FWS_TYPE_MACDESC_DEL: | |
ce814c1b | 1685 | brcmf_fws_macdesc_indicate(fws, type, data); |
bb8c8063 | 1686 | break; |
33753d47 AS |
1687 | case BRCMF_FWS_TYPE_MAC_OPEN: |
1688 | case BRCMF_FWS_TYPE_MAC_CLOSE: | |
a5e9d805 | 1689 | err = brcmf_fws_macdesc_state_indicate(fws, type, data); |
33753d47 AS |
1690 | break; |
1691 | case BRCMF_FWS_TYPE_INTERFACE_OPEN: | |
1692 | case BRCMF_FWS_TYPE_INTERFACE_CLOSE: | |
a5e9d805 AS |
1693 | err = brcmf_fws_interface_state_indicate(fws, type, |
1694 | data); | |
33753d47 | 1695 | break; |
5f38b683 AS |
1696 | case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT: |
1697 | case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET: | |
a5e9d805 | 1698 | err = brcmf_fws_request_indicate(fws, type, data); |
5f38b683 | 1699 | break; |
3edc1cff AS |
1700 | case BRCMF_FWS_TYPE_TXSTATUS: |
1701 | brcmf_fws_txstatus_indicate(fws, data); | |
1702 | break; | |
84bcc0c3 | 1703 | case BRCMF_FWS_TYPE_FIFO_CREDITBACK: |
a5e9d805 | 1704 | err = brcmf_fws_fifocreditback_indicate(fws, data); |
84bcc0c3 | 1705 | break; |
bb8c8063 AS |
1706 | case BRCMF_FWS_TYPE_RSSI: |
1707 | brcmf_fws_rssi_indicate(fws, *data); | |
349e7104 AS |
1708 | break; |
1709 | case BRCMF_FWS_TYPE_TRANS_ID: | |
349e7104 AS |
1710 | brcmf_fws_dbg_seqnum_check(fws, data); |
1711 | break; | |
84bcc0c3 AS |
1712 | case BRCMF_FWS_TYPE_PKTTAG: |
1713 | case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP: | |
349e7104 AS |
1714 | default: |
1715 | fws->stats.tlv_invalid_type++; | |
1716 | break; | |
1717 | } | |
a5e9d805 AS |
1718 | if (err == BRCMF_FWS_RET_OK_SCHEDULE) |
1719 | status = BRCMF_FWS_RET_OK_SCHEDULE; | |
349e7104 AS |
1720 | signal_data += len + 2; |
1721 | data_len -= len + 2; | |
1722 | } | |
1723 | ||
1724 | if (data_len != 0) | |
1725 | fws->stats.tlv_parse_failed++; | |
1726 | ||
a5e9d805 AS |
1727 | if (status == BRCMF_FWS_RET_OK_SCHEDULE) |
1728 | brcmf_fws_schedule_deq(fws); | |
1729 | ||
349e7104 AS |
1730 | /* signalling processing result does |
1731 | * not affect the actual ethernet packet. | |
1732 | */ | |
c67d41ba | 1733 | skb_pull(skb, siglen); |
349e7104 AS |
1734 | |
1735 | /* this may be a signal-only packet | |
1736 | */ | |
1737 | if (skb->len == 0) | |
1738 | fws->stats.header_only_pkt++; | |
349e7104 | 1739 | } |
bb8c8063 | 1740 | |
7b8a466e | 1741 | static u8 brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo, |
3edc1cff AS |
1742 | struct sk_buff *p) |
1743 | { | |
1744 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); | |
1745 | struct brcmf_fws_mac_descriptor *entry = skcb->mac; | |
3edc1cff AS |
1746 | u8 flags; |
1747 | ||
1e86d696 HM |
1748 | if (skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED) |
1749 | brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation); | |
be4910ad | 1750 | flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST; |
fa587d4b | 1751 | if (brcmf_skb_if_flags_get_field(p, REQUESTED)) { |
be4910ad HM |
1752 | /* |
1753 | * Indicate that this packet is being sent in response to an | |
1754 | * explicit request from the firmware side. | |
1755 | */ | |
1756 | flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED; | |
1757 | } | |
1758 | brcmf_skb_htod_tag_set_field(p, FLAGS, flags); | |
7b8a466e | 1759 | return brcmf_fws_hdrpush(fws, p); |
3edc1cff AS |
1760 | } |
1761 | ||
456d0685 AS |
1762 | static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws, |
1763 | struct sk_buff *skb, int fifo) | |
84bcc0c3 | 1764 | { |
84bcc0c3 | 1765 | struct brcmf_fws_mac_descriptor *entry; |
84bcc0c3 | 1766 | struct sk_buff *pktout; |
456d0685 | 1767 | int qidx, hslot; |
84bcc0c3 | 1768 | int rc = 0; |
84bcc0c3 | 1769 | |
84bcc0c3 | 1770 | entry = brcmf_skbcb(skb)->mac; |
456d0685 AS |
1771 | if (entry->occupied) { |
1772 | qidx = 2 * fifo; | |
1773 | if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED) | |
1774 | qidx++; | |
1775 | ||
1776 | pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb); | |
1777 | if (pktout == NULL) { | |
1778 | brcmf_err("%s queue %d full\n", entry->name, qidx); | |
1779 | rc = -ENOSPC; | |
84bcc0c3 | 1780 | } |
84bcc0c3 | 1781 | } else { |
456d0685 | 1782 | brcmf_err("%s entry removed\n", entry->name); |
84bcc0c3 AS |
1783 | rc = -ENOENT; |
1784 | } | |
1785 | ||
67994fa2 | 1786 | if (rc) { |
84bcc0c3 | 1787 | fws->stats.rollback_failed++; |
456d0685 | 1788 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
fa587d4b | 1789 | brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, |
1e86d696 | 1790 | hslot, 0, 0); |
289ec1c7 | 1791 | } else { |
84bcc0c3 | 1792 | fws->stats.rollback_success++; |
fa587d4b HM |
1793 | brcmf_fws_return_credits(fws, fifo, 1); |
1794 | brcmf_fws_macdesc_return_req_credit(skb); | |
289ec1c7 | 1795 | } |
84bcc0c3 AS |
1796 | } |
1797 | ||
1aac1e91 AS |
1798 | static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws) |
1799 | { | |
1800 | int lender_ac; | |
1801 | ||
afc3bbfc HM |
1802 | if (time_after(fws->borrow_defer_timestamp, jiffies)) { |
1803 | fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); | |
1aac1e91 | 1804 | return -ENAVAIL; |
afc3bbfc | 1805 | } |
1aac1e91 AS |
1806 | |
1807 | for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) { | |
1808 | if (fws->fifo_credit[lender_ac]) { | |
1809 | fws->credits_borrowed[lender_ac]++; | |
1810 | fws->fifo_credit[lender_ac]--; | |
1811 | if (fws->fifo_credit[lender_ac] == 0) | |
1812 | fws->fifo_credit_map &= ~(1 << lender_ac); | |
afc3bbfc | 1813 | fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE); |
8071fd61 | 1814 | brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac); |
1aac1e91 AS |
1815 | return 0; |
1816 | } | |
1817 | } | |
afc3bbfc | 1818 | fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); |
1aac1e91 AS |
1819 | return -ENAVAIL; |
1820 | } | |
1821 | ||
3edc1cff AS |
1822 | static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo, |
1823 | struct sk_buff *skb) | |
1824 | { | |
1825 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); | |
1826 | struct brcmf_fws_mac_descriptor *entry; | |
3edc1cff | 1827 | int rc; |
2747e5f7 | 1828 | u8 ifidx; |
7b8a466e | 1829 | u8 data_offset; |
3edc1cff AS |
1830 | |
1831 | entry = skcb->mac; | |
1832 | if (IS_ERR(entry)) | |
1833 | return PTR_ERR(entry); | |
1834 | ||
7b8a466e | 1835 | data_offset = brcmf_fws_precommit_skb(fws, fifo, skb); |
3f4f910f HM |
1836 | entry->transit_count++; |
1837 | if (entry->suppressed) | |
1838 | entry->suppr_transit_count++; | |
7b8a466e | 1839 | ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); |
3f4f910f | 1840 | brcmf_fws_unlock(fws); |
7b8a466e | 1841 | rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); |
3f4f910f | 1842 | brcmf_fws_lock(fws); |
456d0685 AS |
1843 | brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name, |
1844 | skcb->if_flags, skcb->htod, rc); | |
2747e5f7 | 1845 | if (rc < 0) { |
3f4f910f HM |
1846 | entry->transit_count--; |
1847 | if (entry->suppressed) | |
1848 | entry->suppr_transit_count--; | |
796cfb65 | 1849 | (void)brcmf_proto_hdrpull(fws->drvr, false, skb, NULL); |
84bcc0c3 | 1850 | goto rollback; |
2747e5f7 | 1851 | } |
3edc1cff | 1852 | |
3edc1cff | 1853 | fws->stats.pkt2bus++; |
cf3a6872 | 1854 | fws->stats.send_pkts[fifo]++; |
fa587d4b HM |
1855 | if (brcmf_skb_if_flags_get_field(skb, REQUESTED)) |
1856 | fws->stats.requested_sent[fifo]++; | |
84bcc0c3 | 1857 | |
3edc1cff AS |
1858 | return rc; |
1859 | ||
84bcc0c3 | 1860 | rollback: |
51f6dd9d | 1861 | brcmf_fws_rollback_toq(fws, skb, fifo); |
3edc1cff AS |
1862 | return rc; |
1863 | } | |
1864 | ||
456d0685 AS |
1865 | static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p, |
1866 | int fifo) | |
1867 | { | |
1868 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); | |
1869 | int rc, hslot; | |
1870 | ||
1e86d696 HM |
1871 | skcb->htod = 0; |
1872 | skcb->htod_seq = 0; | |
456d0685 AS |
1873 | hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger); |
1874 | brcmf_skb_htod_tag_set_field(p, HSLOT, hslot); | |
1875 | brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]); | |
1876 | brcmf_skb_htod_tag_set_field(p, FIFO, fifo); | |
1877 | rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot); | |
1878 | if (!rc) | |
1879 | skcb->mac->seq[fifo]++; | |
1880 | else | |
1881 | fws->stats.generic_error++; | |
1882 | return rc; | |
1883 | } | |
1884 | ||
3edc1cff AS |
1885 | int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb) |
1886 | { | |
1887 | struct brcmf_pub *drvr = ifp->drvr; | |
1aac1e91 | 1888 | struct brcmf_fws_info *fws = drvr->fws; |
3edc1cff AS |
1889 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); |
1890 | struct ethhdr *eh = (struct ethhdr *)(skb->data); | |
3edc1cff AS |
1891 | int fifo = BRCMF_FWS_FIFO_BCMC; |
1892 | bool multicast = is_multicast_ether_addr(eh->h_dest); | |
55929443 | 1893 | int rc = 0; |
3edc1cff | 1894 | |
87edd891 | 1895 | brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto)); |
3edc1cff AS |
1896 | /* determine the priority */ |
1897 | if (!skb->priority) | |
fa9ffc74 | 1898 | skb->priority = cfg80211_classify8021d(skb, NULL); |
3edc1cff AS |
1899 | |
1900 | drvr->tx_multicast += !!multicast; | |
3edc1cff | 1901 | |
9cd18359 HM |
1902 | if (fws->avoid_queueing) { |
1903 | rc = brcmf_proto_txdata(drvr, ifp->ifidx, 0, skb); | |
1904 | if (rc < 0) | |
054e68ad | 1905 | brcmf_txfinalize(ifp, skb, false); |
9cd18359 HM |
1906 | return rc; |
1907 | } | |
1908 | ||
3edc1cff | 1909 | /* set control buffer information */ |
84bcc0c3 | 1910 | skcb->if_flags = 0; |
3edc1cff | 1911 | skcb->state = BRCMF_FWS_SKBSTATE_NEW; |
31ed07dc | 1912 | brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx); |
3edc1cff AS |
1913 | if (!multicast) |
1914 | fifo = brcmf_fws_prio2fifo[skb->priority]; | |
3edc1cff | 1915 | |
3f4f910f | 1916 | brcmf_fws_lock(fws); |
20863746 AS |
1917 | if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC) |
1918 | fws->borrow_defer_timestamp = jiffies + | |
1919 | BRCMF_FWS_BORROW_DEFER_PERIOD; | |
456d0685 AS |
1920 | |
1921 | skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest); | |
1922 | brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name, | |
1923 | eh->h_dest, multicast, fifo); | |
1924 | if (!brcmf_fws_assign_htod(fws, skb, fifo)) { | |
1925 | brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb); | |
1926 | brcmf_fws_schedule_deq(fws); | |
1927 | } else { | |
1928 | brcmf_err("drop skb: no hanger slot\n"); | |
054e68ad | 1929 | brcmf_txfinalize(ifp, skb, false); |
55929443 | 1930 | rc = -ENOMEM; |
456d0685 | 1931 | } |
3f4f910f | 1932 | brcmf_fws_unlock(fws); |
55929443 HM |
1933 | |
1934 | return rc; | |
3edc1cff AS |
1935 | } |
1936 | ||
bb8c8063 AS |
1937 | void brcmf_fws_reset_interface(struct brcmf_if *ifp) |
1938 | { | |
1939 | struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; | |
1940 | ||
1941 | brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx); | |
1942 | if (!entry) | |
1943 | return; | |
1944 | ||
1ab083a3 | 1945 | brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
bb8c8063 AS |
1946 | } |
1947 | ||
1948 | void brcmf_fws_add_interface(struct brcmf_if *ifp) | |
1949 | { | |
84bcc0c3 | 1950 | struct brcmf_fws_info *fws = ifp->drvr->fws; |
bb8c8063 AS |
1951 | struct brcmf_fws_mac_descriptor *entry; |
1952 | ||
0a4254be | 1953 | if (!ifp->ndev) |
bb8c8063 AS |
1954 | return; |
1955 | ||
84bcc0c3 AS |
1956 | entry = &fws->desc.iface[ifp->ifidx]; |
1957 | ifp->fws_desc = entry; | |
1ab083a3 | 1958 | brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
8071fd61 | 1959 | brcmf_fws_macdesc_set_name(fws, entry); |
84bcc0c3 AS |
1960 | brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
1961 | BRCMF_FWS_PSQ_LEN); | |
8071fd61 | 1962 | brcmf_dbg(TRACE, "added %s\n", entry->name); |
bb8c8063 AS |
1963 | } |
1964 | ||
1965 | void brcmf_fws_del_interface(struct brcmf_if *ifp) | |
1966 | { | |
1967 | struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; | |
1968 | ||
bb8c8063 AS |
1969 | if (!entry) |
1970 | return; | |
1971 | ||
3f4f910f | 1972 | brcmf_fws_lock(ifp->drvr->fws); |
bb8c8063 | 1973 | ifp->fws_desc = NULL; |
8071fd61 | 1974 | brcmf_dbg(TRACE, "deleting %s\n", entry->name); |
1ab083a3 | 1975 | brcmf_fws_macdesc_deinit(entry); |
a3e993c7 | 1976 | brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx); |
3f4f910f | 1977 | brcmf_fws_unlock(ifp->drvr->fws); |
84bcc0c3 AS |
1978 | } |
1979 | ||
1980 | static void brcmf_fws_dequeue_worker(struct work_struct *worker) | |
1981 | { | |
1982 | struct brcmf_fws_info *fws; | |
0a4254be | 1983 | struct brcmf_pub *drvr; |
84bcc0c3 | 1984 | struct sk_buff *skb; |
84bcc0c3 | 1985 | int fifo; |
0a4254be HM |
1986 | u32 hslot; |
1987 | u32 ifidx; | |
1988 | int ret; | |
84bcc0c3 AS |
1989 | |
1990 | fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work); | |
0a4254be | 1991 | drvr = fws->drvr; |
84bcc0c3 | 1992 | |
3f4f910f | 1993 | brcmf_fws_lock(fws); |
2a5d7b02 | 1994 | for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked; |
df50f756 | 1995 | fifo--) { |
0a4254be HM |
1996 | if (!brcmf_fws_fc_active(fws)) { |
1997 | while ((skb = brcmf_fws_deq(fws, fifo)) != NULL) { | |
1998 | hslot = brcmf_skb_htod_tag_get_field(skb, | |
1999 | HSLOT); | |
2000 | brcmf_fws_hanger_poppkt(&fws->hanger, hslot, | |
2001 | &skb, true); | |
2002 | ifidx = brcmf_skb_if_flags_get_field(skb, | |
2003 | INDEX); | |
7b8a466e | 2004 | /* Use proto layer to send data frame */ |
3f4f910f | 2005 | brcmf_fws_unlock(fws); |
7b8a466e | 2006 | ret = brcmf_proto_txdata(drvr, ifidx, 0, skb); |
3f4f910f | 2007 | brcmf_fws_lock(fws); |
0a4254be | 2008 | if (ret < 0) |
054e68ad AS |
2009 | brcmf_txfinalize(brcmf_get_ifp(drvr, |
2010 | ifidx), | |
2011 | skb, false); | |
0a4254be HM |
2012 | if (fws->bus_flow_blocked) |
2013 | break; | |
2014 | } | |
2015 | continue; | |
2016 | } | |
7d747037 HM |
2017 | while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) && |
2018 | (fifo == BRCMF_FWS_FIFO_BCMC))) { | |
84bcc0c3 | 2019 | skb = brcmf_fws_deq(fws, fifo); |
289ec1c7 | 2020 | if (!skb) |
84bcc0c3 | 2021 | break; |
fa587d4b | 2022 | fws->fifo_credit[fifo]--; |
289ec1c7 AS |
2023 | if (brcmf_fws_commit_skb(fws, fifo, skb)) |
2024 | break; | |
df50f756 HM |
2025 | if (fws->bus_flow_blocked) |
2026 | break; | |
84bcc0c3 | 2027 | } |
1aac1e91 | 2028 | if ((fifo == BRCMF_FWS_FIFO_AC_BE) && |
289ec1c7 | 2029 | (fws->fifo_credit[fifo] == 0) && |
df50f756 | 2030 | (!fws->bus_flow_blocked)) { |
1aac1e91 AS |
2031 | while (brcmf_fws_borrow_credit(fws) == 0) { |
2032 | skb = brcmf_fws_deq(fws, fifo); | |
2033 | if (!skb) { | |
2034 | brcmf_fws_return_credits(fws, fifo, 1); | |
2035 | break; | |
2036 | } | |
eb2410cd HM |
2037 | if (brcmf_fws_commit_skb(fws, fifo, skb)) |
2038 | break; | |
df50f756 HM |
2039 | if (fws->bus_flow_blocked) |
2040 | break; | |
1aac1e91 | 2041 | } |
1aac1e91 | 2042 | } |
84bcc0c3 | 2043 | } |
3f4f910f | 2044 | brcmf_fws_unlock(fws); |
bb8c8063 | 2045 | } |
c7f34a69 | 2046 | |
82d957e0 AS |
2047 | #ifdef DEBUG |
2048 | static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data) | |
2049 | { | |
2050 | struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); | |
2051 | struct brcmf_fws_stats *fwstats = &bus_if->drvr->fws->stats; | |
2052 | ||
2053 | seq_printf(seq, | |
2054 | "header_pulls: %u\n" | |
2055 | "header_only_pkt: %u\n" | |
2056 | "tlv_parse_failed: %u\n" | |
2057 | "tlv_invalid_type: %u\n" | |
2058 | "mac_update_fails: %u\n" | |
2059 | "ps_update_fails: %u\n" | |
2060 | "if_update_fails: %u\n" | |
2061 | "pkt2bus: %u\n" | |
2062 | "generic_error: %u\n" | |
2063 | "rollback_success: %u\n" | |
2064 | "rollback_failed: %u\n" | |
2065 | "delayq_full: %u\n" | |
2066 | "supprq_full: %u\n" | |
2067 | "txs_indicate: %u\n" | |
2068 | "txs_discard: %u\n" | |
2069 | "txs_suppr_core: %u\n" | |
2070 | "txs_suppr_ps: %u\n" | |
2071 | "txs_tossed: %u\n" | |
2072 | "txs_host_tossed: %u\n" | |
2073 | "bus_flow_block: %u\n" | |
2074 | "fws_flow_block: %u\n" | |
2075 | "send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n" | |
2076 | "requested_sent: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n", | |
2077 | fwstats->header_pulls, | |
2078 | fwstats->header_only_pkt, | |
2079 | fwstats->tlv_parse_failed, | |
2080 | fwstats->tlv_invalid_type, | |
2081 | fwstats->mac_update_failed, | |
2082 | fwstats->mac_ps_update_failed, | |
2083 | fwstats->if_update_failed, | |
2084 | fwstats->pkt2bus, | |
2085 | fwstats->generic_error, | |
2086 | fwstats->rollback_success, | |
2087 | fwstats->rollback_failed, | |
2088 | fwstats->delayq_full_error, | |
2089 | fwstats->supprq_full_error, | |
2090 | fwstats->txs_indicate, | |
2091 | fwstats->txs_discard, | |
2092 | fwstats->txs_supp_core, | |
2093 | fwstats->txs_supp_ps, | |
2094 | fwstats->txs_tossed, | |
2095 | fwstats->txs_host_tossed, | |
2096 | fwstats->bus_flow_block, | |
2097 | fwstats->fws_flow_block, | |
2098 | fwstats->send_pkts[0], fwstats->send_pkts[1], | |
2099 | fwstats->send_pkts[2], fwstats->send_pkts[3], | |
2100 | fwstats->send_pkts[4], | |
2101 | fwstats->requested_sent[0], | |
2102 | fwstats->requested_sent[1], | |
2103 | fwstats->requested_sent[2], | |
2104 | fwstats->requested_sent[3], | |
2105 | fwstats->requested_sent[4]); | |
2106 | ||
2107 | return 0; | |
2108 | } | |
2109 | #else | |
2110 | static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data) | |
2111 | { | |
2112 | return 0; | |
2113 | } | |
2114 | #endif | |
2115 | ||
d9337414 AS |
2116 | int brcmf_fws_init(struct brcmf_pub *drvr) |
2117 | { | |
0a4254be | 2118 | struct brcmf_fws_info *fws; |
46f3b6ee | 2119 | struct brcmf_if *ifp; |
290fb763 | 2120 | u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS; |
d9337414 | 2121 | int rc; |
1e86d696 | 2122 | u32 mode; |
d9337414 | 2123 | |
d9337414 AS |
2124 | drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL); |
2125 | if (!drvr->fws) { | |
2126 | rc = -ENOMEM; | |
2127 | goto fail; | |
2128 | } | |
2129 | ||
0a4254be | 2130 | fws = drvr->fws; |
3f4f910f HM |
2131 | |
2132 | spin_lock_init(&fws->spinlock); | |
2133 | ||
d9337414 | 2134 | /* set linkage back */ |
0a4254be HM |
2135 | fws->drvr = drvr; |
2136 | fws->fcmode = fcmode; | |
d9337414 | 2137 | |
9cd18359 HM |
2138 | if ((drvr->bus_if->always_use_fws_queue == false) && |
2139 | (fcmode == BRCMF_FWS_FCMODE_NONE)) { | |
2140 | fws->avoid_queueing = true; | |
2141 | brcmf_dbg(INFO, "FWS queueing will be avoided\n"); | |
2142 | return 0; | |
2143 | } | |
2144 | ||
0a4254be HM |
2145 | fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq"); |
2146 | if (fws->fws_wq == NULL) { | |
84bcc0c3 AS |
2147 | brcmf_err("workqueue creation failed\n"); |
2148 | rc = -EBADF; | |
2149 | goto fail; | |
2150 | } | |
0a4254be | 2151 | INIT_WORK(&fws->fws_dequeue_work, brcmf_fws_dequeue_worker); |
84bcc0c3 | 2152 | |
290fb763 | 2153 | /* enable firmware signalling if fcmode active */ |
0a4254be | 2154 | if (fws->fcmode != BRCMF_FWS_FCMODE_NONE) |
290fb763 | 2155 | tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS | |
33753d47 | 2156 | BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS | |
87edd891 AS |
2157 | BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE | |
2158 | BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE; | |
290fb763 | 2159 | |
a786b38d AS |
2160 | rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP, |
2161 | brcmf_fws_notify_credit_map); | |
d9337414 | 2162 | if (rc < 0) { |
a786b38d | 2163 | brcmf_err("register credit map handler failed\n"); |
d9337414 AS |
2164 | goto fail; |
2165 | } | |
7d747037 HM |
2166 | rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT, |
2167 | brcmf_fws_notify_bcmc_credit_support); | |
2168 | if (rc < 0) { | |
2169 | brcmf_err("register bcmc credit handler failed\n"); | |
2170 | brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP); | |
2171 | goto fail; | |
2172 | } | |
d9337414 | 2173 | |
0a4254be | 2174 | /* Setting the iovar may fail if feature is unsupported |
a786b38d | 2175 | * so leave the rc as is so driver initialization can |
0a4254be | 2176 | * continue. Set mode back to none indicating not enabled. |
a786b38d | 2177 | */ |
0a4254be | 2178 | fws->fw_signals = true; |
46f3b6ee AS |
2179 | ifp = brcmf_get_ifp(drvr, 0); |
2180 | if (brcmf_fil_iovar_int_set(ifp, "tlv", tlv)) { | |
a786b38d | 2181 | brcmf_err("failed to set bdcv2 tlv signaling\n"); |
0a4254be HM |
2182 | fws->fcmode = BRCMF_FWS_FCMODE_NONE; |
2183 | fws->fw_signals = false; | |
d9337414 AS |
2184 | } |
2185 | ||
46f3b6ee | 2186 | if (brcmf_fil_iovar_int_set(ifp, "ampdu_hostreorder", 1)) |
87edd891 AS |
2187 | brcmf_dbg(INFO, "enabling AMPDU host-reorder failed\n"); |
2188 | ||
1e86d696 | 2189 | /* Enable seq number reuse, if supported */ |
46f3b6ee | 2190 | if (brcmf_fil_iovar_int_get(ifp, "wlfc_mode", &mode) == 0) { |
1e86d696 HM |
2191 | if (BRCMF_FWS_MODE_GET_REUSESEQ(mode)) { |
2192 | mode = 0; | |
2193 | BRCMF_FWS_MODE_SET_REUSESEQ(mode, 1); | |
46f3b6ee | 2194 | if (brcmf_fil_iovar_int_set(ifp, |
1e86d696 HM |
2195 | "wlfc_mode", mode) == 0) { |
2196 | BRCMF_FWS_MODE_SET_REUSESEQ(fws->mode, 1); | |
2197 | } | |
2198 | } | |
2199 | } | |
2200 | ||
0a4254be HM |
2201 | brcmf_fws_hanger_init(&fws->hanger); |
2202 | brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0); | |
2203 | brcmf_fws_macdesc_set_name(fws, &fws->desc.other); | |
2204 | brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT, | |
84bcc0c3 | 2205 | BRCMF_FWS_PSQ_LEN); |
d9337414 AS |
2206 | |
2207 | /* create debugfs file for statistics */ | |
82d957e0 AS |
2208 | brcmf_debugfs_add_entry(drvr, "fws_stats", |
2209 | brcmf_debugfs_fws_stats_read); | |
d9337414 | 2210 | |
8071fd61 | 2211 | brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n", |
0a4254be | 2212 | fws->fw_signals ? "enabled" : "disabled", tlv); |
d9337414 AS |
2213 | return 0; |
2214 | ||
2215 | fail: | |
d9337414 AS |
2216 | brcmf_fws_deinit(drvr); |
2217 | return rc; | |
2218 | } | |
2219 | ||
2220 | void brcmf_fws_deinit(struct brcmf_pub *drvr) | |
2221 | { | |
2222 | struct brcmf_fws_info *fws = drvr->fws; | |
d9337414 | 2223 | |
47829f4f AS |
2224 | if (!fws) |
2225 | return; | |
2226 | ||
a786b38d AS |
2227 | if (drvr->fws->fws_wq) |
2228 | destroy_workqueue(drvr->fws->fws_wq); | |
2229 | ||
d9337414 | 2230 | /* cleanup */ |
3f4f910f | 2231 | brcmf_fws_lock(fws); |
d9337414 AS |
2232 | brcmf_fws_cleanup(fws, -1); |
2233 | drvr->fws = NULL; | |
3f4f910f | 2234 | brcmf_fws_unlock(fws); |
d9337414 AS |
2235 | |
2236 | /* free top structure */ | |
2237 | kfree(fws); | |
2238 | } | |
2239 | ||
c7f34a69 AS |
2240 | bool brcmf_fws_fc_active(struct brcmf_fws_info *fws) |
2241 | { | |
0a4254be | 2242 | if (!fws->creditmap_received) |
c7f34a69 AS |
2243 | return false; |
2244 | ||
c7f34a69 AS |
2245 | return fws->fcmode != BRCMF_FWS_FCMODE_NONE; |
2246 | } | |
0f8b5cc5 AS |
2247 | |
2248 | void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb) | |
2249 | { | |
fa587d4b | 2250 | u32 hslot; |
0f8b5cc5 | 2251 | |
c7773fc1 AS |
2252 | if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) { |
2253 | brcmu_pkt_buf_free_skb(skb); | |
2254 | return; | |
2255 | } | |
3f4f910f | 2256 | brcmf_fws_lock(fws); |
fa587d4b | 2257 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
1e86d696 | 2258 | brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0, 0); |
3f4f910f | 2259 | brcmf_fws_unlock(fws); |
0f8b5cc5 | 2260 | } |
df50f756 HM |
2261 | |
2262 | void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked) | |
2263 | { | |
2264 | struct brcmf_fws_info *fws = drvr->fws; | |
2265 | ||
2266 | fws->bus_flow_blocked = flow_blocked; | |
2267 | if (!flow_blocked) | |
2268 | brcmf_fws_schedule_deq(fws); | |
5631becb AS |
2269 | else |
2270 | fws->stats.bus_flow_block++; | |
df50f756 | 2271 | } |