Commit | Line | Data |
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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> | |
29 | #include "dhd.h" | |
3edc1cff | 30 | #include "dhd_proto.h" |
349e7104 | 31 | #include "dhd_dbg.h" |
e2432b67 | 32 | #include "dhd_bus.h" |
349e7104 | 33 | #include "fwil.h" |
a7965fbb | 34 | #include "fwil_types.h" |
349e7104 AS |
35 | #include "fweh.h" |
36 | #include "fwsignal.h" | |
a7965fbb AS |
37 | #include "p2p.h" |
38 | #include "wl_cfg80211.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 | ||
108 | static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) | |
109 | { | |
110 | int i; | |
111 | ||
112 | for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++) | |
113 | if (brcmf_fws_tlv_names[i].id == id) | |
114 | return brcmf_fws_tlv_names[i].name; | |
115 | ||
116 | return "INVALID"; | |
117 | } | |
118 | #else | |
119 | static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) | |
120 | { | |
121 | return "NODEBUG"; | |
122 | } | |
123 | #endif /* DEBUG */ | |
124 | ||
3edc1cff | 125 | /* |
349e7104 AS |
126 | * flags used to enable tlv signalling from firmware. |
127 | */ | |
bb8c8063 AS |
128 | #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001 |
129 | #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002 | |
130 | #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004 | |
131 | #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008 | |
132 | #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010 | |
133 | #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020 | |
134 | #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040 | |
135 | ||
349e7104 | 136 | #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32 |
349e7104 AS |
137 | #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff |
138 | ||
139 | #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0 | |
140 | #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1 | |
84bcc0c3 AS |
141 | #define BRCMF_FWS_FLOWCONTROL_HIWATER 128 |
142 | #define BRCMF_FWS_FLOWCONTROL_LOWATER 64 | |
349e7104 | 143 | |
ae664609 | 144 | #define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2) |
bb8c8063 AS |
145 | #define BRCMF_FWS_PSQ_LEN 256 |
146 | ||
3edc1cff AS |
147 | #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01 |
148 | #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02 | |
149 | ||
a5e9d805 AS |
150 | #define BRCMF_FWS_RET_OK_NOSCHEDULE 0 |
151 | #define BRCMF_FWS_RET_OK_SCHEDULE 1 | |
152 | ||
ebb93883 AS |
153 | /** |
154 | * enum brcmf_fws_skb_state - indicates processing state of skb. | |
3edc1cff AS |
155 | * |
156 | * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver. | |
157 | * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue. | |
158 | * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware. | |
c7773fc1 | 159 | * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info. |
ebb93883 AS |
160 | */ |
161 | enum brcmf_fws_skb_state { | |
3edc1cff AS |
162 | BRCMF_FWS_SKBSTATE_NEW, |
163 | BRCMF_FWS_SKBSTATE_DELAYED, | |
c7773fc1 AS |
164 | BRCMF_FWS_SKBSTATE_SUPPRESSED, |
165 | BRCMF_FWS_SKBSTATE_TIM | |
ebb93883 AS |
166 | }; |
167 | ||
168 | /** | |
169 | * struct brcmf_skbuff_cb - control buffer associated with skbuff. | |
170 | * | |
171 | * @if_flags: holds interface index and packet related flags. | |
ebb93883 | 172 | * @htod: host to device packet identifier (used in PKTTAG tlv). |
ebb93883 AS |
173 | * @state: transmit state of the packet. |
174 | * @mac: descriptor related to destination for this packet. | |
175 | * | |
176 | * This information is stored in control buffer struct sk_buff::cb, which | |
177 | * provides 48 bytes of storage so this structure should not exceed that. | |
178 | */ | |
179 | struct brcmf_skbuff_cb { | |
180 | u16 if_flags; | |
ebb93883 | 181 | u32 htod; |
ebb93883 AS |
182 | enum brcmf_fws_skb_state state; |
183 | struct brcmf_fws_mac_descriptor *mac; | |
184 | }; | |
185 | ||
3edc1cff | 186 | /* |
ebb93883 AS |
187 | * macro casting skbuff control buffer to struct brcmf_skbuff_cb. |
188 | */ | |
189 | #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb)) | |
190 | ||
3edc1cff | 191 | /* |
ebb93883 AS |
192 | * sk_buff control if flags |
193 | * | |
fa587d4b | 194 | * b[11] - packet sent upon firmware request. |
ebb93883 AS |
195 | * b[10] - packet only contains signalling data. |
196 | * b[9] - packet is a tx packet. | |
fa587d4b | 197 | * b[8] - packet used requested credit |
ebb93883 | 198 | * b[7] - interface in AP mode. |
ebb93883 AS |
199 | * b[3:0] - interface index. |
200 | */ | |
201 | #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800 | |
202 | #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11 | |
203 | #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400 | |
204 | #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10 | |
205 | #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200 | |
206 | #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9 | |
fa587d4b HM |
207 | #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100 |
208 | #define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8 | |
ebb93883 AS |
209 | #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080 |
210 | #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7 | |
ebb93883 AS |
211 | #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f |
212 | #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0 | |
213 | ||
214 | #define brcmf_skb_if_flags_set_field(skb, field, value) \ | |
215 | brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \ | |
216 | BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ | |
217 | BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value)) | |
218 | #define brcmf_skb_if_flags_get_field(skb, field) \ | |
219 | brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \ | |
220 | BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ | |
221 | BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT) | |
222 | ||
3edc1cff | 223 | /* |
ebb93883 AS |
224 | * sk_buff control packet identifier |
225 | * | |
226 | * 32-bit packet identifier used in PKTTAG tlv from host to dongle. | |
227 | * | |
228 | * - Generated at the host (e.g. dhd) | |
229 | * - Seen as a generic sequence number by firmware except for the flags field. | |
230 | * | |
231 | * Generation : b[31] => generation number for this packet [host->fw] | |
232 | * OR, current generation number [fw->host] | |
233 | * Flags : b[30:27] => command, status flags | |
234 | * FIFO-AC : b[26:24] => AC-FIFO id | |
235 | * h-slot : b[23:8] => hanger-slot | |
236 | * freerun : b[7:0] => A free running counter | |
237 | */ | |
238 | #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000 | |
239 | #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31 | |
240 | #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000 | |
241 | #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27 | |
242 | #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000 | |
243 | #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24 | |
244 | #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00 | |
245 | #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8 | |
246 | #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff | |
be4910ad | 247 | #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0 |
ebb93883 AS |
248 | |
249 | #define brcmf_skb_htod_tag_set_field(skb, field, value) \ | |
e2432b67 | 250 | brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \ |
ebb93883 AS |
251 | BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
252 | BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value)) | |
253 | #define brcmf_skb_htod_tag_get_field(skb, field) \ | |
e2432b67 | 254 | brcmu_maskget32(brcmf_skbcb(skb)->htod, \ |
ebb93883 AS |
255 | BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
256 | BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT) | |
257 | ||
3edc1cff AS |
258 | #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000 |
259 | #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31 | |
260 | #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000 | |
261 | #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27 | |
262 | #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000 | |
263 | #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24 | |
264 | #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00 | |
265 | #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8 | |
266 | #define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF | |
267 | #define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0 | |
268 | ||
269 | #define brcmf_txstatus_get_field(txs, field) \ | |
270 | brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \ | |
271 | BRCMF_FWS_TXSTAT_ ## field ## _SHIFT) | |
272 | ||
1aac1e91 AS |
273 | /* How long to defer borrowing in jiffies */ |
274 | #define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10) | |
275 | ||
3edc1cff AS |
276 | /** |
277 | * enum brcmf_fws_fifo - fifo indices used by dongle firmware. | |
278 | * | |
c7773fc1 | 279 | * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background. |
3edc1cff AS |
280 | * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic. |
281 | * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic. | |
282 | * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic. | |
283 | * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic. | |
284 | * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only). | |
285 | * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only). | |
286 | * @BRCMF_FWS_FIFO_COUNT: number of fifos. | |
287 | */ | |
288 | enum brcmf_fws_fifo { | |
c7773fc1 AS |
289 | BRCMF_FWS_FIFO_FIRST, |
290 | BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST, | |
3edc1cff AS |
291 | BRCMF_FWS_FIFO_AC_BE, |
292 | BRCMF_FWS_FIFO_AC_VI, | |
293 | BRCMF_FWS_FIFO_AC_VO, | |
294 | BRCMF_FWS_FIFO_BCMC, | |
295 | BRCMF_FWS_FIFO_ATIM, | |
296 | BRCMF_FWS_FIFO_COUNT | |
297 | }; | |
298 | ||
299 | /** | |
300 | * enum brcmf_fws_txstatus - txstatus flag values. | |
301 | * | |
302 | * @BRCMF_FWS_TXSTATUS_DISCARD: | |
303 | * host is free to discard the packet. | |
304 | * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS: | |
305 | * 802.11 core suppressed the packet. | |
306 | * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS: | |
307 | * firmware suppress the packet as device is already in PS mode. | |
308 | * @BRCMF_FWS_TXSTATUS_FW_TOSSED: | |
309 | * firmware tossed the packet. | |
fa587d4b HM |
310 | * @BRCMF_FWS_TXSTATUS_HOST_TOSSED: |
311 | * host tossed the packet. | |
3edc1cff AS |
312 | */ |
313 | enum brcmf_fws_txstatus { | |
314 | BRCMF_FWS_TXSTATUS_DISCARD, | |
315 | BRCMF_FWS_TXSTATUS_CORE_SUPPRESS, | |
316 | BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS, | |
fa587d4b HM |
317 | BRCMF_FWS_TXSTATUS_FW_TOSSED, |
318 | BRCMF_FWS_TXSTATUS_HOST_TOSSED | |
3edc1cff AS |
319 | }; |
320 | ||
c7f34a69 AS |
321 | enum brcmf_fws_fcmode { |
322 | BRCMF_FWS_FCMODE_NONE, | |
323 | BRCMF_FWS_FCMODE_IMPLIED_CREDIT, | |
324 | BRCMF_FWS_FCMODE_EXPLICIT_CREDIT | |
325 | }; | |
326 | ||
84bcc0c3 AS |
327 | enum brcmf_fws_mac_desc_state { |
328 | BRCMF_FWS_STATE_OPEN = 1, | |
329 | BRCMF_FWS_STATE_CLOSE | |
330 | }; | |
331 | ||
bb8c8063 AS |
332 | /** |
333 | * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface | |
334 | * | |
335 | * @occupied: slot is in use. | |
ce814c1b | 336 | * @mac_handle: handle for mac entry determined by firmware. |
bb8c8063 AS |
337 | * @interface_id: interface index. |
338 | * @state: current state. | |
3edc1cff AS |
339 | * @suppressed: mac entry is suppressed. |
340 | * @generation: generation bit. | |
bb8c8063 AS |
341 | * @ac_bitmap: ac queue bitmap. |
342 | * @requested_credit: credits requested by firmware. | |
343 | * @ea: ethernet address. | |
3edc1cff | 344 | * @seq: per-node free-running sequence. |
bb8c8063 | 345 | * @psq: power-save queue. |
3edc1cff | 346 | * @transit_count: packet in transit to firmware. |
bb8c8063 AS |
347 | */ |
348 | struct brcmf_fws_mac_descriptor { | |
8071fd61 | 349 | char name[16]; |
bb8c8063 | 350 | u8 occupied; |
ce814c1b | 351 | u8 mac_handle; |
bb8c8063 AS |
352 | u8 interface_id; |
353 | u8 state; | |
3edc1cff AS |
354 | bool suppressed; |
355 | u8 generation; | |
bb8c8063 AS |
356 | u8 ac_bitmap; |
357 | u8 requested_credit; | |
84bcc0c3 | 358 | u8 requested_packet; |
bb8c8063 | 359 | u8 ea[ETH_ALEN]; |
3edc1cff | 360 | u8 seq[BRCMF_FWS_FIFO_COUNT]; |
bb8c8063 | 361 | struct pktq psq; |
3edc1cff | 362 | int transit_count; |
84bcc0c3 AS |
363 | int suppr_transit_count; |
364 | bool send_tim_signal; | |
365 | u8 traffic_pending_bmp; | |
366 | u8 traffic_lastreported_bmp; | |
bb8c8063 AS |
367 | }; |
368 | ||
6971280a AS |
369 | #define BRCMF_FWS_HANGER_MAXITEMS 1024 |
370 | ||
371 | /** | |
372 | * enum brcmf_fws_hanger_item_state - state of hanger item. | |
373 | * | |
3edc1cff AS |
374 | * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use. |
375 | * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use. | |
376 | * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed. | |
6971280a AS |
377 | */ |
378 | enum brcmf_fws_hanger_item_state { | |
3edc1cff AS |
379 | BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1, |
380 | BRCMF_FWS_HANGER_ITEM_STATE_INUSE, | |
381 | BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED | |
6971280a AS |
382 | }; |
383 | ||
384 | ||
385 | /** | |
386 | * struct brcmf_fws_hanger_item - single entry for tx pending packet. | |
387 | * | |
388 | * @state: entry is either free or occupied. | |
6971280a AS |
389 | * @pkt: packet itself. |
390 | */ | |
391 | struct brcmf_fws_hanger_item { | |
392 | enum brcmf_fws_hanger_item_state state; | |
6971280a AS |
393 | struct sk_buff *pkt; |
394 | }; | |
395 | ||
396 | /** | |
397 | * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus. | |
398 | * | |
6971280a AS |
399 | * @pushed: packets pushed to await txstatus. |
400 | * @popped: packets popped upon handling txstatus. | |
401 | * @failed_to_push: packets that could not be pushed. | |
402 | * @failed_to_pop: packets that could not be popped. | |
403 | * @failed_slotfind: packets for which failed to find an entry. | |
404 | * @slot_pos: last returned item index for a free entry. | |
405 | * @items: array of hanger items. | |
406 | */ | |
407 | struct brcmf_fws_hanger { | |
408 | u32 pushed; | |
409 | u32 popped; | |
410 | u32 failed_to_push; | |
411 | u32 failed_to_pop; | |
412 | u32 failed_slotfind; | |
413 | u32 slot_pos; | |
414 | struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS]; | |
415 | }; | |
416 | ||
84bcc0c3 AS |
417 | struct brcmf_fws_macdesc_table { |
418 | struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE]; | |
419 | struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS]; | |
420 | struct brcmf_fws_mac_descriptor other; | |
421 | }; | |
422 | ||
349e7104 AS |
423 | struct brcmf_fws_info { |
424 | struct brcmf_pub *drvr; | |
425 | struct brcmf_fws_stats stats; | |
6971280a | 426 | struct brcmf_fws_hanger hanger; |
c7f34a69 | 427 | enum brcmf_fws_fcmode fcmode; |
7d747037 | 428 | bool bcmc_credit_check; |
84bcc0c3 AS |
429 | struct brcmf_fws_macdesc_table desc; |
430 | struct workqueue_struct *fws_wq; | |
431 | struct work_struct fws_dequeue_work; | |
432 | u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT]; | |
3edc1cff | 433 | int fifo_credit[BRCMF_FWS_FIFO_COUNT]; |
1aac1e91 | 434 | int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1]; |
84bcc0c3 AS |
435 | int deq_node_pos[BRCMF_FWS_FIFO_COUNT]; |
436 | u32 fifo_credit_map; | |
437 | u32 fifo_delay_map; | |
1aac1e91 | 438 | unsigned long borrow_defer_timestamp; |
df50f756 | 439 | bool bus_flow_blocked; |
0d24b0ea | 440 | bool creditmap_received; |
3edc1cff AS |
441 | }; |
442 | ||
443 | /* | |
444 | * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index. | |
445 | */ | |
446 | static const int brcmf_fws_prio2fifo[] = { | |
447 | BRCMF_FWS_FIFO_AC_BE, | |
448 | BRCMF_FWS_FIFO_AC_BK, | |
449 | BRCMF_FWS_FIFO_AC_BK, | |
450 | BRCMF_FWS_FIFO_AC_BE, | |
451 | BRCMF_FWS_FIFO_AC_VI, | |
452 | BRCMF_FWS_FIFO_AC_VI, | |
453 | BRCMF_FWS_FIFO_AC_VO, | |
454 | BRCMF_FWS_FIFO_AC_VO | |
349e7104 AS |
455 | }; |
456 | ||
c7f34a69 AS |
457 | static int fcmode; |
458 | module_param(fcmode, int, S_IRUSR); | |
459 | MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control"); | |
460 | ||
bb8c8063 AS |
461 | #define BRCMF_FWS_TLV_DEF(name, id, len) \ |
462 | case BRCMF_FWS_TYPE_ ## name: \ | |
463 | return len; | |
464 | ||
3edc1cff AS |
465 | /** |
466 | * brcmf_fws_get_tlv_len() - returns defined length for given tlv id. | |
467 | * | |
468 | * @fws: firmware-signalling information. | |
469 | * @id: identifier of the TLV. | |
470 | * | |
471 | * Return: the specified length for the given TLV; Otherwise -EINVAL. | |
472 | */ | |
bb8c8063 AS |
473 | static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws, |
474 | enum brcmf_fws_tlv_type id) | |
475 | { | |
476 | switch (id) { | |
477 | BRCMF_FWS_TLV_DEFLIST | |
478 | default: | |
bb8c8063 AS |
479 | fws->stats.tlv_invalid_type++; |
480 | break; | |
481 | } | |
482 | return -EINVAL; | |
483 | } | |
484 | #undef BRCMF_FWS_TLV_DEF | |
485 | ||
3edc1cff AS |
486 | static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg) |
487 | { | |
488 | u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); | |
489 | return ifidx == *(int *)arg; | |
490 | } | |
491 | ||
492 | static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q, | |
493 | int ifidx) | |
494 | { | |
495 | bool (*matchfn)(struct sk_buff *, void *) = NULL; | |
496 | struct sk_buff *skb; | |
497 | int prec; | |
498 | ||
499 | if (ifidx != -1) | |
500 | matchfn = brcmf_fws_ifidx_match; | |
501 | for (prec = 0; prec < q->num_prec; prec++) { | |
502 | skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); | |
503 | while (skb) { | |
84bcc0c3 | 504 | brcmu_pkt_buf_free_skb(skb); |
3edc1cff AS |
505 | skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); |
506 | } | |
507 | } | |
508 | } | |
509 | ||
6971280a AS |
510 | static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger) |
511 | { | |
512 | int i; | |
513 | ||
6971280a AS |
514 | memset(hanger, 0, sizeof(*hanger)); |
515 | for (i = 0; i < ARRAY_SIZE(hanger->items); i++) | |
3edc1cff | 516 | hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
6971280a AS |
517 | } |
518 | ||
3edc1cff | 519 | static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h) |
6971280a AS |
520 | { |
521 | u32 i; | |
522 | ||
6971280a AS |
523 | i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS; |
524 | ||
525 | while (i != h->slot_pos) { | |
3edc1cff | 526 | if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
6971280a | 527 | h->slot_pos = i; |
84bcc0c3 | 528 | goto done; |
6971280a AS |
529 | } |
530 | i++; | |
531 | if (i == BRCMF_FWS_HANGER_MAXITEMS) | |
532 | i = 0; | |
533 | } | |
534 | brcmf_err("all slots occupied\n"); | |
535 | h->failed_slotfind++; | |
84bcc0c3 AS |
536 | i = BRCMF_FWS_HANGER_MAXITEMS; |
537 | done: | |
84bcc0c3 | 538 | return i; |
6971280a AS |
539 | } |
540 | ||
3edc1cff | 541 | static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h, |
be4910ad | 542 | struct sk_buff *pkt, u32 slot_id) |
6971280a | 543 | { |
6971280a AS |
544 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
545 | return -ENOENT; | |
546 | ||
547 | if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) { | |
548 | brcmf_err("slot is not free\n"); | |
549 | h->failed_to_push++; | |
550 | return -EINVAL; | |
551 | } | |
552 | ||
553 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE; | |
554 | h->items[slot_id].pkt = pkt; | |
6971280a AS |
555 | h->pushed++; |
556 | return 0; | |
557 | } | |
558 | ||
3edc1cff | 559 | static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h, |
6971280a AS |
560 | u32 slot_id, struct sk_buff **pktout, |
561 | bool remove_item) | |
562 | { | |
6971280a AS |
563 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
564 | return -ENOENT; | |
565 | ||
566 | if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { | |
567 | brcmf_err("entry not in use\n"); | |
568 | h->failed_to_pop++; | |
569 | return -EINVAL; | |
570 | } | |
571 | ||
572 | *pktout = h->items[slot_id].pkt; | |
573 | if (remove_item) { | |
574 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
575 | h->items[slot_id].pkt = NULL; | |
6971280a AS |
576 | h->popped++; |
577 | } | |
578 | return 0; | |
579 | } | |
580 | ||
84bcc0c3 | 581 | static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h, |
be4910ad | 582 | u32 slot_id) |
6971280a | 583 | { |
6971280a AS |
584 | if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
585 | return -ENOENT; | |
586 | ||
5631becb | 587 | if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
6971280a AS |
588 | brcmf_err("entry not in use\n"); |
589 | return -EINVAL; | |
590 | } | |
591 | ||
3edc1cff | 592 | h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED; |
6971280a AS |
593 | return 0; |
594 | } | |
595 | ||
84bcc0c3 | 596 | static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws, |
6971280a AS |
597 | bool (*fn)(struct sk_buff *, void *), |
598 | int ifidx) | |
599 | { | |
84bcc0c3 | 600 | struct brcmf_fws_hanger *h = &fws->hanger; |
6971280a AS |
601 | struct sk_buff *skb; |
602 | int i; | |
603 | enum brcmf_fws_hanger_item_state s; | |
604 | ||
6971280a AS |
605 | for (i = 0; i < ARRAY_SIZE(h->items); i++) { |
606 | s = h->items[i].state; | |
607 | if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE || | |
608 | s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) { | |
609 | skb = h->items[i].pkt; | |
610 | if (fn == NULL || fn(skb, &ifidx)) { | |
611 | /* suppress packets freed from psq */ | |
612 | if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE) | |
613 | brcmu_pkt_buf_free_skb(skb); | |
614 | h->items[i].state = | |
615 | BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
616 | } | |
617 | } | |
618 | } | |
619 | } | |
620 | ||
8071fd61 AS |
621 | static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws, |
622 | struct brcmf_fws_mac_descriptor *desc) | |
623 | { | |
624 | if (desc == &fws->desc.other) | |
625 | strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name)); | |
626 | else if (desc->mac_handle) | |
627 | scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d", | |
628 | desc->mac_handle, desc->interface_id); | |
629 | else | |
630 | scnprintf(desc->name, sizeof(desc->name), "MACIF:%d", | |
631 | desc->interface_id); | |
632 | } | |
633 | ||
1ab083a3 AS |
634 | static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc, |
635 | u8 *addr, u8 ifidx) | |
ce814c1b | 636 | { |
84bcc0c3 AS |
637 | brcmf_dbg(TRACE, |
638 | "enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx); | |
ce814c1b AS |
639 | desc->occupied = 1; |
640 | desc->state = BRCMF_FWS_STATE_OPEN; | |
641 | desc->requested_credit = 0; | |
fa587d4b | 642 | desc->requested_packet = 0; |
ce814c1b AS |
643 | /* depending on use may need ifp->bssidx instead */ |
644 | desc->interface_id = ifidx; | |
645 | desc->ac_bitmap = 0xff; /* update this when handling APSD */ | |
84bcc0c3 AS |
646 | if (addr) |
647 | memcpy(&desc->ea[0], addr, ETH_ALEN); | |
ce814c1b AS |
648 | } |
649 | ||
650 | static | |
1ab083a3 | 651 | void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc) |
ce814c1b AS |
652 | { |
653 | brcmf_dbg(TRACE, | |
654 | "enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id); | |
655 | desc->occupied = 0; | |
656 | desc->state = BRCMF_FWS_STATE_CLOSE; | |
657 | desc->requested_credit = 0; | |
fa587d4b | 658 | desc->requested_packet = 0; |
ce814c1b AS |
659 | } |
660 | ||
661 | static struct brcmf_fws_mac_descriptor * | |
1ab083a3 | 662 | brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea) |
ce814c1b AS |
663 | { |
664 | struct brcmf_fws_mac_descriptor *entry; | |
665 | int i; | |
666 | ||
ce814c1b AS |
667 | if (ea == NULL) |
668 | return ERR_PTR(-EINVAL); | |
669 | ||
84bcc0c3 AS |
670 | entry = &fws->desc.nodes[0]; |
671 | for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) { | |
ce814c1b AS |
672 | if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN)) |
673 | return entry; | |
674 | entry++; | |
675 | } | |
676 | ||
677 | return ERR_PTR(-ENOENT); | |
678 | } | |
679 | ||
3edc1cff | 680 | static struct brcmf_fws_mac_descriptor* |
1ab083a3 | 681 | brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da) |
3edc1cff | 682 | { |
84bcc0c3 | 683 | struct brcmf_fws_mac_descriptor *entry = &fws->desc.other; |
3edc1cff | 684 | bool multicast; |
3edc1cff | 685 | |
f97a7f06 | 686 | multicast = is_multicast_ether_addr(da); |
a7965fbb | 687 | |
5cd51c2b HM |
688 | /* Multicast destination, STA and P2P clients get the interface entry. |
689 | * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations | |
690 | * have their own entry. | |
3edc1cff | 691 | */ |
5cd51c2b | 692 | if (multicast && ifp->fws_desc) { |
3edc1cff | 693 | entry = ifp->fws_desc; |
3edc1cff | 694 | goto done; |
5cd51c2b | 695 | } |
3edc1cff | 696 | |
1ab083a3 | 697 | entry = brcmf_fws_macdesc_lookup(fws, da); |
3edc1cff | 698 | if (IS_ERR(entry)) |
5cd51c2b | 699 | entry = ifp->fws_desc; |
3edc1cff AS |
700 | |
701 | done: | |
3edc1cff AS |
702 | return entry; |
703 | } | |
704 | ||
1ab083a3 AS |
705 | static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws, |
706 | struct brcmf_fws_mac_descriptor *entry, | |
707 | int fifo) | |
84bcc0c3 | 708 | { |
b75c1a30 | 709 | struct brcmf_fws_mac_descriptor *if_entry; |
9fc60224 | 710 | bool closed; |
84bcc0c3 | 711 | |
b75c1a30 AS |
712 | /* for unique destination entries the related interface |
713 | * may be closed. | |
714 | */ | |
715 | if (entry->mac_handle) { | |
716 | if_entry = &fws->desc.iface[entry->interface_id]; | |
717 | if (if_entry->state == BRCMF_FWS_STATE_CLOSE) | |
718 | return true; | |
719 | } | |
9fc60224 AS |
720 | /* an entry is closed when the state is closed and |
721 | * the firmware did not request anything. | |
84bcc0c3 | 722 | */ |
9fc60224 AS |
723 | closed = entry->state == BRCMF_FWS_STATE_CLOSE && |
724 | !entry->requested_credit && !entry->requested_packet; | |
84bcc0c3 | 725 | |
9fc60224 AS |
726 | /* Or firmware does not allow traffic for given fifo */ |
727 | return closed || !(entry->ac_bitmap & BIT(fifo)); | |
84bcc0c3 AS |
728 | } |
729 | ||
1ab083a3 AS |
730 | static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws, |
731 | struct brcmf_fws_mac_descriptor *entry, | |
732 | int ifidx) | |
fba1400a | 733 | { |
3edc1cff | 734 | if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) { |
3edc1cff | 735 | brcmf_fws_psq_flush(fws, &entry->psq, ifidx); |
fba1400a AS |
736 | entry->occupied = !!(entry->psq.len); |
737 | } | |
738 | } | |
739 | ||
e2432b67 AS |
740 | static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws, |
741 | bool (*fn)(struct sk_buff *, void *), | |
742 | int ifidx) | |
743 | { | |
744 | struct brcmf_fws_hanger_item *hi; | |
745 | struct pktq *txq; | |
746 | struct sk_buff *skb; | |
747 | int prec; | |
748 | u32 hslot; | |
749 | ||
e2432b67 AS |
750 | txq = brcmf_bus_gettxq(fws->drvr->bus_if); |
751 | if (IS_ERR(txq)) { | |
752 | brcmf_dbg(TRACE, "no txq to clean up\n"); | |
753 | return; | |
754 | } | |
755 | ||
756 | for (prec = 0; prec < txq->num_prec; prec++) { | |
757 | skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); | |
758 | while (skb) { | |
759 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); | |
760 | hi = &fws->hanger.items[hslot]; | |
761 | WARN_ON(skb != hi->pkt); | |
762 | hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; | |
763 | brcmu_pkt_buf_free_skb(skb); | |
764 | skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); | |
765 | } | |
766 | } | |
767 | } | |
768 | ||
fba1400a AS |
769 | static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx) |
770 | { | |
771 | int i; | |
772 | struct brcmf_fws_mac_descriptor *table; | |
a3e993c7 | 773 | bool (*matchfn)(struct sk_buff *, void *) = NULL; |
fba1400a | 774 | |
fba1400a AS |
775 | if (fws == NULL) |
776 | return; | |
777 | ||
a3e993c7 AS |
778 | if (ifidx != -1) |
779 | matchfn = brcmf_fws_ifidx_match; | |
780 | ||
fba1400a | 781 | /* cleanup individual nodes */ |
84bcc0c3 AS |
782 | table = &fws->desc.nodes[0]; |
783 | for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) | |
1ab083a3 | 784 | brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx); |
fba1400a | 785 | |
1ab083a3 | 786 | brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx); |
e2432b67 | 787 | brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx); |
84bcc0c3 AS |
788 | brcmf_fws_hanger_cleanup(fws, matchfn, ifidx); |
789 | } | |
790 | ||
c7773fc1 | 791 | static int brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb) |
84bcc0c3 | 792 | { |
c7773fc1 AS |
793 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; |
794 | u8 *wlh; | |
795 | u16 data_offset = 0; | |
796 | u8 fillers; | |
797 | __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod); | |
798 | ||
80898a11 AS |
799 | brcmf_dbg(TRACE, "enter: %s, idx=%d pkttag=0x%08X, hslot=%d\n", |
800 | entry->name, brcmf_skb_if_flags_get_field(skb, INDEX), | |
c7773fc1 AS |
801 | le32_to_cpu(pkttag), (le32_to_cpu(pkttag) >> 8) & 0xffff); |
802 | if (entry->send_tim_signal) | |
803 | data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; | |
804 | ||
805 | /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */ | |
806 | data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN; | |
807 | fillers = round_up(data_offset, 4) - data_offset; | |
808 | data_offset += fillers; | |
809 | ||
810 | skb_push(skb, data_offset); | |
811 | wlh = skb->data; | |
812 | ||
813 | wlh[0] = BRCMF_FWS_TYPE_PKTTAG; | |
814 | wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN; | |
815 | memcpy(&wlh[2], &pkttag, sizeof(pkttag)); | |
816 | wlh += BRCMF_FWS_TYPE_PKTTAG_LEN + 2; | |
817 | ||
818 | if (entry->send_tim_signal) { | |
819 | entry->send_tim_signal = 0; | |
820 | wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP; | |
821 | wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; | |
822 | wlh[2] = entry->mac_handle; | |
823 | wlh[3] = entry->traffic_pending_bmp; | |
80898a11 AS |
824 | brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n", |
825 | entry->mac_handle, entry->traffic_pending_bmp); | |
c7773fc1 AS |
826 | wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2; |
827 | entry->traffic_lastreported_bmp = entry->traffic_pending_bmp; | |
84bcc0c3 | 828 | } |
c7773fc1 AS |
829 | if (fillers) |
830 | memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers); | |
831 | ||
832 | brcmf_proto_hdrpush(fws->drvr, brcmf_skb_if_flags_get_field(skb, INDEX), | |
833 | data_offset >> 2, skb); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws, | |
838 | struct brcmf_fws_mac_descriptor *entry, | |
4e89dfca | 839 | int fifo, bool send_immediately) |
c7773fc1 AS |
840 | { |
841 | struct sk_buff *skb; | |
842 | struct brcmf_bus *bus; | |
843 | struct brcmf_skbuff_cb *skcb; | |
844 | s32 err; | |
845 | u32 len; | |
846 | ||
847 | /* check delayedQ and suppressQ in one call using bitmap */ | |
4e89dfca AS |
848 | if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0) |
849 | entry->traffic_pending_bmp &= ~NBITVAL(fifo); | |
c7773fc1 | 850 | else |
4e89dfca | 851 | entry->traffic_pending_bmp |= NBITVAL(fifo); |
c7773fc1 AS |
852 | |
853 | entry->send_tim_signal = false; | |
84bcc0c3 AS |
854 | if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp) |
855 | entry->send_tim_signal = true; | |
c7773fc1 AS |
856 | if (send_immediately && entry->send_tim_signal && |
857 | entry->state == BRCMF_FWS_STATE_CLOSE) { | |
858 | /* create a dummy packet and sent that. The traffic */ | |
859 | /* bitmap info will automatically be attached to that packet */ | |
860 | len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 + | |
861 | BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 + | |
862 | 4 + fws->drvr->hdrlen; | |
863 | skb = brcmu_pkt_buf_get_skb(len); | |
864 | if (skb == NULL) | |
865 | return false; | |
866 | skb_pull(skb, len); | |
867 | skcb = brcmf_skbcb(skb); | |
868 | skcb->mac = entry; | |
869 | skcb->state = BRCMF_FWS_SKBSTATE_TIM; | |
870 | bus = fws->drvr->bus_if; | |
871 | err = brcmf_fws_hdrpush(fws, skb); | |
872 | if (err == 0) | |
873 | err = brcmf_bus_txdata(bus, skb); | |
874 | if (err) | |
875 | brcmu_pkt_buf_free_skb(skb); | |
876 | return true; | |
877 | } | |
878 | return false; | |
84bcc0c3 AS |
879 | } |
880 | ||
881 | static void | |
882 | brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq, | |
883 | u8 if_id) | |
884 | { | |
402e3ba2 | 885 | struct brcmf_if *ifp = fws->drvr->iflist[!if_id ? 0 : if_id + 1]; |
84bcc0c3 | 886 | |
84bcc0c3 AS |
887 | if (WARN_ON(!ifp)) |
888 | return; | |
889 | ||
890 | if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && | |
891 | pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER) | |
892 | brcmf_txflowblock_if(ifp, | |
893 | BRCMF_NETIF_STOP_REASON_FWS_FC, false); | |
894 | if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && | |
5631becb AS |
895 | pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) { |
896 | fws->stats.fws_flow_block++; | |
84bcc0c3 | 897 | brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true); |
5631becb | 898 | } |
84bcc0c3 | 899 | return; |
fba1400a AS |
900 | } |
901 | ||
349e7104 AS |
902 | static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi) |
903 | { | |
904 | brcmf_dbg(CTL, "rssi %d\n", rssi); | |
905 | return 0; | |
906 | } | |
907 | ||
c6a681ab AS |
908 | /* using macro so sparse checking does not complain |
909 | * about locking imbalance. | |
910 | */ | |
911 | #define brcmf_fws_lock(drvr, flags) \ | |
912 | do { \ | |
913 | flags = 0; \ | |
914 | spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \ | |
915 | } while (0) | |
916 | ||
917 | /* using macro so sparse checking does not complain | |
918 | * about locking imbalance. | |
919 | */ | |
920 | #define brcmf_fws_unlock(drvr, flags) \ | |
921 | spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags)) | |
922 | ||
ce814c1b AS |
923 | static |
924 | int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data) | |
925 | { | |
926 | struct brcmf_fws_mac_descriptor *entry, *existing; | |
c6a681ab | 927 | ulong flags; |
ce814c1b AS |
928 | u8 mac_handle; |
929 | u8 ifidx; | |
930 | u8 *addr; | |
931 | ||
932 | mac_handle = *data++; | |
933 | ifidx = *data++; | |
934 | addr = data; | |
935 | ||
84bcc0c3 | 936 | entry = &fws->desc.nodes[mac_handle & 0x1F]; |
ce814c1b | 937 | if (type == BRCMF_FWS_TYPE_MACDESC_DEL) { |
9a83f1ec | 938 | if (entry->occupied) { |
8071fd61 AS |
939 | brcmf_dbg(TRACE, "deleting %s mac %pM\n", |
940 | entry->name, addr); | |
c6a681ab | 941 | brcmf_fws_lock(fws->drvr, flags); |
1ab083a3 AS |
942 | brcmf_fws_macdesc_cleanup(fws, entry, -1); |
943 | brcmf_fws_macdesc_deinit(entry); | |
c6a681ab | 944 | brcmf_fws_unlock(fws->drvr, flags); |
9a83f1ec | 945 | } else |
ce814c1b | 946 | fws->stats.mac_update_failed++; |
ce814c1b AS |
947 | return 0; |
948 | } | |
949 | ||
1ab083a3 | 950 | existing = brcmf_fws_macdesc_lookup(fws, addr); |
ce814c1b AS |
951 | if (IS_ERR(existing)) { |
952 | if (!entry->occupied) { | |
c6a681ab | 953 | brcmf_fws_lock(fws->drvr, flags); |
ce814c1b | 954 | entry->mac_handle = mac_handle; |
1ab083a3 | 955 | brcmf_fws_macdesc_init(entry, addr, ifidx); |
8071fd61 | 956 | brcmf_fws_macdesc_set_name(fws, entry); |
ce814c1b AS |
957 | brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
958 | BRCMF_FWS_PSQ_LEN); | |
c6a681ab | 959 | brcmf_fws_unlock(fws->drvr, flags); |
8071fd61 | 960 | brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr); |
ce814c1b AS |
961 | } else { |
962 | fws->stats.mac_update_failed++; | |
963 | } | |
964 | } else { | |
965 | if (entry != existing) { | |
8071fd61 | 966 | brcmf_dbg(TRACE, "copy mac %s\n", existing->name); |
c6a681ab | 967 | brcmf_fws_lock(fws->drvr, flags); |
ce814c1b AS |
968 | memcpy(entry, existing, |
969 | offsetof(struct brcmf_fws_mac_descriptor, psq)); | |
970 | entry->mac_handle = mac_handle; | |
1ab083a3 | 971 | brcmf_fws_macdesc_deinit(existing); |
8071fd61 | 972 | brcmf_fws_macdesc_set_name(fws, entry); |
c6a681ab | 973 | brcmf_fws_unlock(fws->drvr, flags); |
8071fd61 AS |
974 | brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name, |
975 | addr); | |
ce814c1b AS |
976 | } else { |
977 | brcmf_dbg(TRACE, "use existing\n"); | |
978 | WARN_ON(entry->mac_handle != mac_handle); | |
979 | /* TODO: what should we do here: continue, reinit, .. */ | |
980 | } | |
981 | } | |
982 | return 0; | |
983 | } | |
984 | ||
33753d47 AS |
985 | static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws, |
986 | u8 type, u8 *data) | |
987 | { | |
988 | struct brcmf_fws_mac_descriptor *entry; | |
c6a681ab | 989 | ulong flags; |
33753d47 | 990 | u8 mac_handle; |
c6a681ab | 991 | int ret; |
33753d47 AS |
992 | |
993 | mac_handle = data[0]; | |
994 | entry = &fws->desc.nodes[mac_handle & 0x1F]; | |
995 | if (!entry->occupied) { | |
996 | fws->stats.mac_ps_update_failed++; | |
997 | return -ESRCH; | |
998 | } | |
c6a681ab | 999 | brcmf_fws_lock(fws->drvr, flags); |
c7773fc1 | 1000 | /* a state update should wipe old credits */ |
33753d47 | 1001 | entry->requested_credit = 0; |
c7773fc1 | 1002 | entry->requested_packet = 0; |
33753d47 AS |
1003 | if (type == BRCMF_FWS_TYPE_MAC_OPEN) { |
1004 | entry->state = BRCMF_FWS_STATE_OPEN; | |
c6a681ab | 1005 | ret = BRCMF_FWS_RET_OK_SCHEDULE; |
33753d47 AS |
1006 | } else { |
1007 | entry->state = BRCMF_FWS_STATE_CLOSE; | |
c7773fc1 AS |
1008 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false); |
1009 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false); | |
1010 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false); | |
1011 | brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true); | |
c6a681ab | 1012 | ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
33753d47 | 1013 | } |
c6a681ab AS |
1014 | brcmf_fws_unlock(fws->drvr, flags); |
1015 | return ret; | |
33753d47 AS |
1016 | } |
1017 | ||
1018 | static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws, | |
1019 | u8 type, u8 *data) | |
1020 | { | |
1021 | struct brcmf_fws_mac_descriptor *entry; | |
c6a681ab | 1022 | ulong flags; |
33753d47 AS |
1023 | u8 ifidx; |
1024 | int ret; | |
1025 | ||
1026 | ifidx = data[0]; | |
1027 | ||
33753d47 AS |
1028 | if (ifidx >= BRCMF_MAX_IFS) { |
1029 | ret = -ERANGE; | |
1030 | goto fail; | |
1031 | } | |
1032 | ||
1033 | entry = &fws->desc.iface[ifidx]; | |
1034 | if (!entry->occupied) { | |
1035 | ret = -ESRCH; | |
1036 | goto fail; | |
1037 | } | |
1038 | ||
8071fd61 AS |
1039 | brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type, |
1040 | entry->name); | |
c6a681ab | 1041 | brcmf_fws_lock(fws->drvr, flags); |
33753d47 AS |
1042 | switch (type) { |
1043 | case BRCMF_FWS_TYPE_INTERFACE_OPEN: | |
1044 | entry->state = BRCMF_FWS_STATE_OPEN; | |
c6a681ab AS |
1045 | ret = BRCMF_FWS_RET_OK_SCHEDULE; |
1046 | break; | |
33753d47 AS |
1047 | case BRCMF_FWS_TYPE_INTERFACE_CLOSE: |
1048 | entry->state = BRCMF_FWS_STATE_CLOSE; | |
c6a681ab AS |
1049 | ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
1050 | break; | |
33753d47 AS |
1051 | default: |
1052 | ret = -EINVAL; | |
c6a681ab AS |
1053 | brcmf_fws_unlock(fws->drvr, flags); |
1054 | goto fail; | |
33753d47 | 1055 | } |
c6a681ab AS |
1056 | brcmf_fws_unlock(fws->drvr, flags); |
1057 | return ret; | |
1058 | ||
33753d47 AS |
1059 | fail: |
1060 | fws->stats.if_update_failed++; | |
1061 | return ret; | |
1062 | } | |
1063 | ||
5f38b683 AS |
1064 | static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type, |
1065 | u8 *data) | |
1066 | { | |
1067 | struct brcmf_fws_mac_descriptor *entry; | |
c6a681ab | 1068 | ulong flags; |
5f38b683 AS |
1069 | |
1070 | entry = &fws->desc.nodes[data[1] & 0x1F]; | |
1071 | if (!entry->occupied) { | |
1072 | if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) | |
1073 | fws->stats.credit_request_failed++; | |
1074 | else | |
1075 | fws->stats.packet_request_failed++; | |
1076 | return -ESRCH; | |
1077 | } | |
1078 | ||
8071fd61 AS |
1079 | brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n", |
1080 | brcmf_fws_get_tlv_name(type), type, entry->name, | |
1081 | data[0], data[2]); | |
c6a681ab | 1082 | brcmf_fws_lock(fws->drvr, flags); |
5f38b683 AS |
1083 | if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) |
1084 | entry->requested_credit = data[0]; | |
1085 | else | |
1086 | entry->requested_packet = data[0]; | |
1087 | ||
1088 | entry->ac_bitmap = data[2]; | |
c6a681ab | 1089 | brcmf_fws_unlock(fws->drvr, flags); |
a5e9d805 | 1090 | return BRCMF_FWS_RET_OK_SCHEDULE; |
5f38b683 AS |
1091 | } |
1092 | ||
fa587d4b HM |
1093 | static void |
1094 | brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry, | |
1095 | struct sk_buff *skb) | |
289ec1c7 | 1096 | { |
fa587d4b HM |
1097 | if (entry->requested_credit > 0) { |
1098 | entry->requested_credit--; | |
1099 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); | |
1100 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1); | |
1101 | if (entry->state != BRCMF_FWS_STATE_CLOSE) | |
1102 | brcmf_err("requested credit set while mac not closed!\n"); | |
1103 | } else if (entry->requested_packet > 0) { | |
1104 | entry->requested_packet--; | |
1105 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); | |
1106 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); | |
1107 | if (entry->state != BRCMF_FWS_STATE_CLOSE) | |
1108 | brcmf_err("requested packet set while mac not closed!\n"); | |
289ec1c7 | 1109 | } else { |
fa587d4b HM |
1110 | brcmf_skb_if_flags_set_field(skb, REQUESTED, 0); |
1111 | brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); | |
289ec1c7 | 1112 | } |
fa587d4b HM |
1113 | } |
1114 | ||
1115 | static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb) | |
1116 | { | |
1117 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; | |
1118 | ||
1119 | if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) && | |
1120 | (entry->state == BRCMF_FWS_STATE_CLOSE)) | |
1121 | entry->requested_credit++; | |
289ec1c7 AS |
1122 | } |
1123 | ||
84bcc0c3 AS |
1124 | static void brcmf_fws_return_credits(struct brcmf_fws_info *fws, |
1125 | u8 fifo, u8 credits) | |
1126 | { | |
1aac1e91 AS |
1127 | int lender_ac; |
1128 | int *borrowed; | |
1129 | int *fifo_credit; | |
1130 | ||
84bcc0c3 AS |
1131 | if (!credits) |
1132 | return; | |
1133 | ||
afc3bbfc HM |
1134 | fws->fifo_credit_map |= 1 << fifo; |
1135 | ||
1aac1e91 AS |
1136 | if ((fifo == BRCMF_FWS_FIFO_AC_BE) && |
1137 | (fws->credits_borrowed[0])) { | |
1138 | for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0; | |
1139 | lender_ac--) { | |
1140 | borrowed = &fws->credits_borrowed[lender_ac]; | |
1141 | if (*borrowed) { | |
1142 | fws->fifo_credit_map |= (1 << lender_ac); | |
1143 | fifo_credit = &fws->fifo_credit[lender_ac]; | |
1144 | if (*borrowed >= credits) { | |
1145 | *borrowed -= credits; | |
1146 | *fifo_credit += credits; | |
1147 | return; | |
1148 | } else { | |
1149 | credits -= *borrowed; | |
1150 | *fifo_credit += *borrowed; | |
1151 | *borrowed = 0; | |
1152 | } | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
84bcc0c3 AS |
1157 | fws->fifo_credit[fifo] += credits; |
1158 | } | |
1159 | ||
1160 | static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws) | |
1161 | { | |
1162 | /* only schedule dequeue when there are credits for delayed traffic */ | |
1163 | if (fws->fifo_credit_map & fws->fifo_delay_map) | |
1164 | queue_work(fws->fws_wq, &fws->fws_dequeue_work); | |
1165 | } | |
1166 | ||
84bcc0c3 AS |
1167 | static int brcmf_fws_enq(struct brcmf_fws_info *fws, |
1168 | enum brcmf_fws_skb_state state, int fifo, | |
1169 | struct sk_buff *p) | |
1170 | { | |
1171 | int prec = 2 * fifo; | |
1172 | u32 *qfull_stat = &fws->stats.delayq_full_error; | |
1173 | ||
1174 | struct brcmf_fws_mac_descriptor *entry; | |
1175 | ||
1176 | entry = brcmf_skbcb(p)->mac; | |
1177 | if (entry == NULL) { | |
1178 | brcmf_err("no mac descriptor found for skb %p\n", p); | |
1179 | return -ENOENT; | |
1180 | } | |
1181 | ||
8071fd61 | 1182 | brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p); |
84bcc0c3 AS |
1183 | if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) { |
1184 | prec += 1; | |
1185 | qfull_stat = &fws->stats.supprq_full_error; | |
1186 | } | |
1187 | ||
1188 | if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) { | |
1189 | *qfull_stat += 1; | |
1190 | return -ENFILE; | |
1191 | } | |
1192 | ||
1193 | /* increment total enqueued packet count */ | |
1194 | fws->fifo_delay_map |= 1 << fifo; | |
1195 | fws->fifo_enqpkt[fifo]++; | |
1196 | ||
1197 | /* update the sk_buff state */ | |
1198 | brcmf_skbcb(p)->state = state; | |
84bcc0c3 AS |
1199 | |
1200 | /* | |
1201 | * A packet has been pushed so update traffic | |
1202 | * availability bitmap, if applicable | |
1203 | */ | |
c7773fc1 | 1204 | brcmf_fws_tim_update(fws, entry, fifo, true); |
84bcc0c3 AS |
1205 | brcmf_fws_flow_control_check(fws, &entry->psq, |
1206 | brcmf_skb_if_flags_get_field(p, INDEX)); | |
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo) | |
1211 | { | |
1212 | struct brcmf_fws_mac_descriptor *table; | |
1213 | struct brcmf_fws_mac_descriptor *entry; | |
1214 | struct sk_buff *p; | |
84bcc0c3 AS |
1215 | int num_nodes; |
1216 | int node_pos; | |
1217 | int prec_out; | |
07529d20 | 1218 | int pmsk; |
84bcc0c3 AS |
1219 | int i; |
1220 | ||
1221 | table = (struct brcmf_fws_mac_descriptor *)&fws->desc; | |
1222 | num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor); | |
1223 | node_pos = fws->deq_node_pos[fifo]; | |
1224 | ||
1225 | for (i = 0; i < num_nodes; i++) { | |
1226 | entry = &table[(node_pos + i) % num_nodes]; | |
b75c1a30 | 1227 | if (!entry->occupied || |
1ab083a3 | 1228 | brcmf_fws_macdesc_closed(fws, entry, fifo)) |
84bcc0c3 AS |
1229 | continue; |
1230 | ||
1231 | if (entry->suppressed) | |
1232 | pmsk = 2; | |
07529d20 AS |
1233 | else |
1234 | pmsk = 3; | |
84bcc0c3 AS |
1235 | p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out); |
1236 | if (p == NULL) { | |
1237 | if (entry->suppressed) { | |
8c5140f6 HM |
1238 | if (entry->suppr_transit_count) |
1239 | continue; | |
84bcc0c3 AS |
1240 | entry->suppressed = false; |
1241 | p = brcmu_pktq_mdeq(&entry->psq, | |
1242 | 1 << (fifo * 2), &prec_out); | |
1243 | } | |
1244 | } | |
1245 | if (p == NULL) | |
1246 | continue; | |
1247 | ||
fa587d4b | 1248 | brcmf_fws_macdesc_use_req_credit(entry, p); |
84bcc0c3 AS |
1249 | |
1250 | /* move dequeue position to ensure fair round-robin */ | |
1251 | fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes; | |
1252 | brcmf_fws_flow_control_check(fws, &entry->psq, | |
1253 | brcmf_skb_if_flags_get_field(p, | |
1254 | INDEX) | |
1255 | ); | |
1256 | /* | |
1257 | * A packet has been picked up, update traffic | |
1258 | * availability bitmap, if applicable | |
1259 | */ | |
c7773fc1 | 1260 | brcmf_fws_tim_update(fws, entry, fifo, false); |
84bcc0c3 AS |
1261 | |
1262 | /* | |
1263 | * decrement total enqueued fifo packets and | |
1264 | * clear delay bitmap if done. | |
1265 | */ | |
1266 | fws->fifo_enqpkt[fifo]--; | |
1267 | if (fws->fifo_enqpkt[fifo] == 0) | |
1268 | fws->fifo_delay_map &= ~(1 << fifo); | |
1269 | goto done; | |
1270 | } | |
1271 | p = NULL; | |
1272 | done: | |
8071fd61 | 1273 | brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p); |
84bcc0c3 AS |
1274 | return p; |
1275 | } | |
1276 | ||
1277 | static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo, | |
1278 | struct sk_buff *skb, u32 genbit) | |
1279 | { | |
1280 | struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; | |
1281 | u32 hslot; | |
1282 | int ret; | |
2747e5f7 | 1283 | u8 ifidx; |
84bcc0c3 AS |
1284 | |
1285 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); | |
1286 | ||
1287 | /* this packet was suppressed */ | |
be4910ad | 1288 | if (!entry->suppressed) { |
84bcc0c3 | 1289 | entry->suppressed = true; |
84bcc0c3 | 1290 | entry->suppr_transit_count = entry->transit_count; |
8c5140f6 HM |
1291 | brcmf_dbg(DATA, "suppress %s: transit %d\n", |
1292 | entry->name, entry->transit_count); | |
84bcc0c3 AS |
1293 | } |
1294 | ||
1295 | entry->generation = genbit; | |
1296 | ||
2747e5f7 HM |
1297 | ret = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb); |
1298 | if (ret == 0) | |
1299 | ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, | |
1300 | skb); | |
84bcc0c3 | 1301 | if (ret != 0) { |
2747e5f7 | 1302 | /* suppress q is full or hdrpull failed, drop this packet */ |
84bcc0c3 AS |
1303 | brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, |
1304 | true); | |
1305 | } else { | |
1306 | /* | |
1307 | * Mark suppressed to avoid a double free during | |
1308 | * wlfc cleanup | |
1309 | */ | |
be4910ad | 1310 | brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot); |
84bcc0c3 AS |
1311 | } |
1312 | ||
1313 | return ret; | |
1314 | } | |
1315 | ||
3edc1cff | 1316 | static int |
8071fd61 | 1317 | brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot, |
84bcc0c3 | 1318 | u32 genbit) |
3edc1cff | 1319 | { |
84bcc0c3 | 1320 | u32 fifo; |
3edc1cff | 1321 | int ret; |
84bcc0c3 | 1322 | bool remove_from_hanger = true; |
3edc1cff | 1323 | struct sk_buff *skb; |
8071fd61 | 1324 | struct brcmf_skbuff_cb *skcb; |
3edc1cff AS |
1325 | struct brcmf_fws_mac_descriptor *entry = NULL; |
1326 | ||
8071fd61 | 1327 | brcmf_dbg(DATA, "flags %d\n", flags); |
3edc1cff AS |
1328 | |
1329 | if (flags == BRCMF_FWS_TXSTATUS_DISCARD) | |
1330 | fws->stats.txs_discard++; | |
84bcc0c3 AS |
1331 | else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) { |
1332 | fws->stats.txs_supp_core++; | |
1333 | remove_from_hanger = false; | |
1334 | } else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) { | |
1335 | fws->stats.txs_supp_ps++; | |
1336 | remove_from_hanger = false; | |
5631becb | 1337 | } else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED) |
3edc1cff | 1338 | fws->stats.txs_tossed++; |
5631becb AS |
1339 | else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED) |
1340 | fws->stats.txs_host_tossed++; | |
3edc1cff AS |
1341 | else |
1342 | brcmf_err("unexpected txstatus\n"); | |
1343 | ||
1344 | ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, | |
84bcc0c3 | 1345 | remove_from_hanger); |
3edc1cff AS |
1346 | if (ret != 0) { |
1347 | brcmf_err("no packet in hanger slot: hslot=%d\n", hslot); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
8071fd61 AS |
1351 | skcb = brcmf_skbcb(skb); |
1352 | entry = skcb->mac; | |
3edc1cff | 1353 | if (WARN_ON(!entry)) { |
84bcc0c3 AS |
1354 | brcmu_pkt_buf_free_skb(skb); |
1355 | return -EINVAL; | |
3edc1cff | 1356 | } |
8c5140f6 HM |
1357 | entry->transit_count--; |
1358 | if (entry->suppressed && entry->suppr_transit_count) | |
1359 | entry->suppr_transit_count--; | |
3edc1cff | 1360 | |
8071fd61 AS |
1361 | brcmf_dbg(DATA, "%s flags %X htod %X\n", entry->name, skcb->if_flags, |
1362 | skcb->htod); | |
1363 | ||
84bcc0c3 AS |
1364 | /* pick up the implicit credit from this packet */ |
1365 | fifo = brcmf_skb_htod_tag_get_field(skb, FIFO); | |
fa587d4b HM |
1366 | if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) || |
1367 | (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) || | |
1368 | (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) { | |
1369 | brcmf_fws_return_credits(fws, fifo, 1); | |
1370 | brcmf_fws_schedule_deq(fws); | |
1371 | } | |
1372 | brcmf_fws_macdesc_return_req_credit(skb); | |
3edc1cff | 1373 | |
84bcc0c3 AS |
1374 | if (!remove_from_hanger) |
1375 | ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, genbit); | |
1376 | ||
8c5140f6 | 1377 | if (remove_from_hanger || ret) |
84bcc0c3 | 1378 | brcmf_txfinalize(fws->drvr, skb, true); |
8c5140f6 | 1379 | |
84bcc0c3 AS |
1380 | return 0; |
1381 | } | |
1382 | ||
1383 | static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws, | |
1384 | u8 *data) | |
1385 | { | |
c6a681ab | 1386 | ulong flags; |
84bcc0c3 AS |
1387 | int i; |
1388 | ||
1389 | if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) { | |
1390 | brcmf_dbg(INFO, "ignored\n"); | |
a5e9d805 | 1391 | return BRCMF_FWS_RET_OK_NOSCHEDULE; |
84bcc0c3 AS |
1392 | } |
1393 | ||
8071fd61 | 1394 | brcmf_dbg(DATA, "enter: data %pM\n", data); |
c6a681ab | 1395 | brcmf_fws_lock(fws->drvr, flags); |
84bcc0c3 AS |
1396 | for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++) |
1397 | brcmf_fws_return_credits(fws, i, data[i]); | |
1398 | ||
8071fd61 | 1399 | brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map, |
84bcc0c3 | 1400 | fws->fifo_delay_map); |
c6a681ab | 1401 | brcmf_fws_unlock(fws->drvr, flags); |
a5e9d805 | 1402 | return BRCMF_FWS_RET_OK_SCHEDULE; |
3edc1cff AS |
1403 | } |
1404 | ||
0f8b5cc5 AS |
1405 | static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data) |
1406 | { | |
c6a681ab | 1407 | ulong lflags; |
a2ffc566 | 1408 | __le32 status_le; |
0f8b5cc5 AS |
1409 | u32 status; |
1410 | u32 hslot; | |
84bcc0c3 | 1411 | u32 genbit; |
0f8b5cc5 AS |
1412 | u8 flags; |
1413 | ||
1414 | fws->stats.txs_indicate++; | |
a2ffc566 AS |
1415 | memcpy(&status_le, data, sizeof(status_le)); |
1416 | status = le32_to_cpu(status_le); | |
0f8b5cc5 AS |
1417 | flags = brcmf_txstatus_get_field(status, FLAGS); |
1418 | hslot = brcmf_txstatus_get_field(status, HSLOT); | |
84bcc0c3 | 1419 | genbit = brcmf_txstatus_get_field(status, GENERATION); |
0f8b5cc5 | 1420 | |
c6a681ab AS |
1421 | brcmf_fws_lock(fws->drvr, lflags); |
1422 | brcmf_fws_txs_process(fws, flags, hslot, genbit); | |
1423 | brcmf_fws_unlock(fws->drvr, lflags); | |
1424 | return BRCMF_FWS_RET_OK_NOSCHEDULE; | |
0f8b5cc5 AS |
1425 | } |
1426 | ||
349e7104 AS |
1427 | static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data) |
1428 | { | |
1429 | __le32 timestamp; | |
1430 | ||
1431 | memcpy(×tamp, &data[2], sizeof(timestamp)); | |
8071fd61 | 1432 | brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1], |
349e7104 AS |
1433 | le32_to_cpu(timestamp)); |
1434 | return 0; | |
1435 | } | |
1436 | ||
43fa635e AS |
1437 | static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp, |
1438 | const struct brcmf_event_msg *e, | |
1439 | void *data) | |
1440 | { | |
1441 | struct brcmf_fws_info *fws = ifp->drvr->fws; | |
1442 | int i; | |
1443 | ulong flags; | |
1444 | u8 *credits = data; | |
1445 | ||
84bcc0c3 AS |
1446 | if (e->datalen < BRCMF_FWS_FIFO_COUNT) { |
1447 | brcmf_err("event payload too small (%d)\n", e->datalen); | |
1448 | return -EINVAL; | |
1449 | } | |
0d24b0ea HM |
1450 | if (fws->creditmap_received) |
1451 | return 0; | |
1452 | ||
1453 | fws->creditmap_received = true; | |
84bcc0c3 AS |
1454 | |
1455 | brcmf_dbg(TRACE, "enter: credits %pM\n", credits); | |
43fa635e | 1456 | brcmf_fws_lock(ifp->drvr, flags); |
84bcc0c3 AS |
1457 | for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) { |
1458 | if (*credits) | |
1459 | fws->fifo_credit_map |= 1 << i; | |
1460 | else | |
1461 | fws->fifo_credit_map &= ~(1 << i); | |
43fa635e | 1462 | fws->fifo_credit[i] = *credits++; |
84bcc0c3 AS |
1463 | } |
1464 | brcmf_fws_schedule_deq(fws); | |
43fa635e AS |
1465 | brcmf_fws_unlock(ifp->drvr, flags); |
1466 | return 0; | |
1467 | } | |
1468 | ||
7d747037 HM |
1469 | static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp, |
1470 | const struct brcmf_event_msg *e, | |
1471 | void *data) | |
1472 | { | |
1473 | struct brcmf_fws_info *fws = ifp->drvr->fws; | |
1474 | ulong flags; | |
1475 | ||
1476 | brcmf_fws_lock(ifp->drvr, flags); | |
1477 | if (fws) | |
1478 | fws->bcmc_credit_check = true; | |
1479 | brcmf_fws_unlock(ifp->drvr, flags); | |
1480 | return 0; | |
1481 | } | |
1482 | ||
349e7104 AS |
1483 | int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len, |
1484 | struct sk_buff *skb) | |
1485 | { | |
1486 | struct brcmf_fws_info *fws = drvr->fws; | |
349e7104 AS |
1487 | u8 *signal_data; |
1488 | s16 data_len; | |
1489 | u8 type; | |
1490 | u8 len; | |
1491 | u8 *data; | |
a5e9d805 AS |
1492 | s32 status; |
1493 | s32 err; | |
349e7104 | 1494 | |
8071fd61 | 1495 | brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n", |
349e7104 AS |
1496 | ifidx, skb->len, signal_len); |
1497 | ||
1498 | WARN_ON(signal_len > skb->len); | |
1499 | ||
1500 | /* if flow control disabled, skip to packet data and leave */ | |
1501 | if (!signal_len || !drvr->fw_signals) { | |
1502 | skb_pull(skb, signal_len); | |
1503 | return 0; | |
1504 | } | |
1505 | ||
349e7104 AS |
1506 | fws->stats.header_pulls++; |
1507 | data_len = signal_len; | |
1508 | signal_data = skb->data; | |
1509 | ||
a5e9d805 | 1510 | status = BRCMF_FWS_RET_OK_NOSCHEDULE; |
349e7104 AS |
1511 | while (data_len > 0) { |
1512 | /* extract tlv info */ | |
1513 | type = signal_data[0]; | |
1514 | ||
1515 | /* FILLER type is actually not a TLV, but | |
1516 | * a single byte that can be skipped. | |
1517 | */ | |
1518 | if (type == BRCMF_FWS_TYPE_FILLER) { | |
1519 | signal_data += 1; | |
1520 | data_len -= 1; | |
1521 | continue; | |
1522 | } | |
1523 | len = signal_data[1]; | |
1524 | data = signal_data + 2; | |
1525 | ||
8071fd61 AS |
1526 | brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n", |
1527 | brcmf_fws_get_tlv_name(type), type, len, | |
1528 | brcmf_fws_get_tlv_len(fws, type)); | |
2af15580 | 1529 | |
349e7104 AS |
1530 | /* abort parsing when length invalid */ |
1531 | if (data_len < len + 2) | |
1532 | break; | |
1533 | ||
f55d94a6 | 1534 | if (len < brcmf_fws_get_tlv_len(fws, type)) |
bb8c8063 AS |
1535 | break; |
1536 | ||
a5e9d805 | 1537 | err = BRCMF_FWS_RET_OK_NOSCHEDULE; |
349e7104 | 1538 | switch (type) { |
349e7104 | 1539 | case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS: |
bb8c8063 | 1540 | case BRCMF_FWS_TYPE_COMP_TXSTATUS: |
ce814c1b | 1541 | break; |
bb8c8063 AS |
1542 | case BRCMF_FWS_TYPE_MACDESC_ADD: |
1543 | case BRCMF_FWS_TYPE_MACDESC_DEL: | |
ce814c1b | 1544 | brcmf_fws_macdesc_indicate(fws, type, data); |
bb8c8063 | 1545 | break; |
33753d47 AS |
1546 | case BRCMF_FWS_TYPE_MAC_OPEN: |
1547 | case BRCMF_FWS_TYPE_MAC_CLOSE: | |
a5e9d805 | 1548 | err = brcmf_fws_macdesc_state_indicate(fws, type, data); |
33753d47 AS |
1549 | break; |
1550 | case BRCMF_FWS_TYPE_INTERFACE_OPEN: | |
1551 | case BRCMF_FWS_TYPE_INTERFACE_CLOSE: | |
a5e9d805 AS |
1552 | err = brcmf_fws_interface_state_indicate(fws, type, |
1553 | data); | |
33753d47 | 1554 | break; |
5f38b683 AS |
1555 | case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT: |
1556 | case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET: | |
a5e9d805 | 1557 | err = brcmf_fws_request_indicate(fws, type, data); |
5f38b683 | 1558 | break; |
3edc1cff AS |
1559 | case BRCMF_FWS_TYPE_TXSTATUS: |
1560 | brcmf_fws_txstatus_indicate(fws, data); | |
1561 | break; | |
84bcc0c3 | 1562 | case BRCMF_FWS_TYPE_FIFO_CREDITBACK: |
a5e9d805 | 1563 | err = brcmf_fws_fifocreditback_indicate(fws, data); |
84bcc0c3 | 1564 | break; |
bb8c8063 AS |
1565 | case BRCMF_FWS_TYPE_RSSI: |
1566 | brcmf_fws_rssi_indicate(fws, *data); | |
349e7104 AS |
1567 | break; |
1568 | case BRCMF_FWS_TYPE_TRANS_ID: | |
349e7104 AS |
1569 | brcmf_fws_dbg_seqnum_check(fws, data); |
1570 | break; | |
84bcc0c3 AS |
1571 | case BRCMF_FWS_TYPE_PKTTAG: |
1572 | case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP: | |
349e7104 AS |
1573 | default: |
1574 | fws->stats.tlv_invalid_type++; | |
1575 | break; | |
1576 | } | |
a5e9d805 AS |
1577 | if (err == BRCMF_FWS_RET_OK_SCHEDULE) |
1578 | status = BRCMF_FWS_RET_OK_SCHEDULE; | |
349e7104 AS |
1579 | signal_data += len + 2; |
1580 | data_len -= len + 2; | |
1581 | } | |
1582 | ||
1583 | if (data_len != 0) | |
1584 | fws->stats.tlv_parse_failed++; | |
1585 | ||
a5e9d805 AS |
1586 | if (status == BRCMF_FWS_RET_OK_SCHEDULE) |
1587 | brcmf_fws_schedule_deq(fws); | |
1588 | ||
349e7104 AS |
1589 | /* signalling processing result does |
1590 | * not affect the actual ethernet packet. | |
1591 | */ | |
1592 | skb_pull(skb, signal_len); | |
1593 | ||
1594 | /* this may be a signal-only packet | |
1595 | */ | |
1596 | if (skb->len == 0) | |
1597 | fws->stats.header_only_pkt++; | |
1598 | ||
349e7104 AS |
1599 | return 0; |
1600 | } | |
bb8c8063 | 1601 | |
456d0685 | 1602 | static void brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo, |
3edc1cff AS |
1603 | struct sk_buff *p) |
1604 | { | |
1605 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); | |
1606 | struct brcmf_fws_mac_descriptor *entry = skcb->mac; | |
3edc1cff AS |
1607 | u8 flags; |
1608 | ||
be4910ad | 1609 | brcmf_skb_if_flags_set_field(p, TRANSMIT, 1); |
be4910ad HM |
1610 | brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation); |
1611 | flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST; | |
fa587d4b | 1612 | if (brcmf_skb_if_flags_get_field(p, REQUESTED)) { |
be4910ad HM |
1613 | /* |
1614 | * Indicate that this packet is being sent in response to an | |
1615 | * explicit request from the firmware side. | |
1616 | */ | |
1617 | flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED; | |
1618 | } | |
1619 | brcmf_skb_htod_tag_set_field(p, FLAGS, flags); | |
456d0685 | 1620 | brcmf_fws_hdrpush(fws, p); |
3edc1cff AS |
1621 | } |
1622 | ||
456d0685 AS |
1623 | static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws, |
1624 | struct sk_buff *skb, int fifo) | |
84bcc0c3 | 1625 | { |
84bcc0c3 | 1626 | struct brcmf_fws_mac_descriptor *entry; |
84bcc0c3 | 1627 | struct sk_buff *pktout; |
456d0685 | 1628 | int qidx, hslot; |
84bcc0c3 | 1629 | int rc = 0; |
84bcc0c3 | 1630 | |
84bcc0c3 | 1631 | entry = brcmf_skbcb(skb)->mac; |
456d0685 AS |
1632 | if (entry->occupied) { |
1633 | qidx = 2 * fifo; | |
1634 | if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED) | |
1635 | qidx++; | |
1636 | ||
1637 | pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb); | |
1638 | if (pktout == NULL) { | |
1639 | brcmf_err("%s queue %d full\n", entry->name, qidx); | |
1640 | rc = -ENOSPC; | |
84bcc0c3 | 1641 | } |
84bcc0c3 | 1642 | } else { |
456d0685 | 1643 | brcmf_err("%s entry removed\n", entry->name); |
84bcc0c3 AS |
1644 | rc = -ENOENT; |
1645 | } | |
1646 | ||
67994fa2 | 1647 | if (rc) { |
84bcc0c3 | 1648 | fws->stats.rollback_failed++; |
456d0685 | 1649 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
fa587d4b HM |
1650 | brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, |
1651 | hslot, 0); | |
289ec1c7 | 1652 | } else { |
84bcc0c3 | 1653 | fws->stats.rollback_success++; |
fa587d4b HM |
1654 | brcmf_fws_return_credits(fws, fifo, 1); |
1655 | brcmf_fws_macdesc_return_req_credit(skb); | |
289ec1c7 | 1656 | } |
84bcc0c3 AS |
1657 | } |
1658 | ||
1aac1e91 AS |
1659 | static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws) |
1660 | { | |
1661 | int lender_ac; | |
1662 | ||
afc3bbfc HM |
1663 | if (time_after(fws->borrow_defer_timestamp, jiffies)) { |
1664 | fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); | |
1aac1e91 | 1665 | return -ENAVAIL; |
afc3bbfc | 1666 | } |
1aac1e91 AS |
1667 | |
1668 | for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) { | |
1669 | if (fws->fifo_credit[lender_ac]) { | |
1670 | fws->credits_borrowed[lender_ac]++; | |
1671 | fws->fifo_credit[lender_ac]--; | |
1672 | if (fws->fifo_credit[lender_ac] == 0) | |
1673 | fws->fifo_credit_map &= ~(1 << lender_ac); | |
afc3bbfc | 1674 | fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE); |
8071fd61 | 1675 | brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac); |
1aac1e91 AS |
1676 | return 0; |
1677 | } | |
1678 | } | |
afc3bbfc | 1679 | fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); |
1aac1e91 AS |
1680 | return -ENAVAIL; |
1681 | } | |
1682 | ||
3edc1cff AS |
1683 | static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo, |
1684 | struct sk_buff *skb) | |
1685 | { | |
1686 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); | |
1687 | struct brcmf_fws_mac_descriptor *entry; | |
1688 | struct brcmf_bus *bus = fws->drvr->bus_if; | |
1689 | int rc; | |
2747e5f7 | 1690 | u8 ifidx; |
3edc1cff AS |
1691 | |
1692 | entry = skcb->mac; | |
1693 | if (IS_ERR(entry)) | |
1694 | return PTR_ERR(entry); | |
1695 | ||
456d0685 | 1696 | brcmf_fws_precommit_skb(fws, fifo, skb); |
3edc1cff | 1697 | rc = brcmf_bus_txdata(bus, skb); |
456d0685 AS |
1698 | brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name, |
1699 | skcb->if_flags, skcb->htod, rc); | |
2747e5f7 HM |
1700 | if (rc < 0) { |
1701 | brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb); | |
84bcc0c3 | 1702 | goto rollback; |
2747e5f7 | 1703 | } |
3edc1cff | 1704 | |
8c5140f6 HM |
1705 | entry->transit_count++; |
1706 | if (entry->suppressed) | |
1707 | entry->suppr_transit_count++; | |
3edc1cff | 1708 | fws->stats.pkt2bus++; |
cf3a6872 | 1709 | fws->stats.send_pkts[fifo]++; |
fa587d4b HM |
1710 | if (brcmf_skb_if_flags_get_field(skb, REQUESTED)) |
1711 | fws->stats.requested_sent[fifo]++; | |
84bcc0c3 | 1712 | |
3edc1cff AS |
1713 | return rc; |
1714 | ||
84bcc0c3 | 1715 | rollback: |
51f6dd9d | 1716 | brcmf_fws_rollback_toq(fws, skb, fifo); |
3edc1cff AS |
1717 | return rc; |
1718 | } | |
1719 | ||
456d0685 AS |
1720 | static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p, |
1721 | int fifo) | |
1722 | { | |
1723 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); | |
1724 | int rc, hslot; | |
1725 | ||
1726 | hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger); | |
1727 | brcmf_skb_htod_tag_set_field(p, HSLOT, hslot); | |
1728 | brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]); | |
1729 | brcmf_skb_htod_tag_set_field(p, FIFO, fifo); | |
1730 | rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot); | |
1731 | if (!rc) | |
1732 | skcb->mac->seq[fifo]++; | |
1733 | else | |
1734 | fws->stats.generic_error++; | |
1735 | return rc; | |
1736 | } | |
1737 | ||
3edc1cff AS |
1738 | int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb) |
1739 | { | |
1740 | struct brcmf_pub *drvr = ifp->drvr; | |
1aac1e91 | 1741 | struct brcmf_fws_info *fws = drvr->fws; |
3edc1cff AS |
1742 | struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); |
1743 | struct ethhdr *eh = (struct ethhdr *)(skb->data); | |
1744 | ulong flags; | |
3edc1cff AS |
1745 | int fifo = BRCMF_FWS_FIFO_BCMC; |
1746 | bool multicast = is_multicast_ether_addr(eh->h_dest); | |
28a905b5 | 1747 | bool pae = eh->h_proto == htons(ETH_P_PAE); |
3edc1cff AS |
1748 | |
1749 | /* determine the priority */ | |
1750 | if (!skb->priority) | |
1751 | skb->priority = cfg80211_classify8021d(skb); | |
1752 | ||
1753 | drvr->tx_multicast += !!multicast; | |
28a905b5 | 1754 | if (pae) |
3edc1cff AS |
1755 | atomic_inc(&ifp->pend_8021x_cnt); |
1756 | ||
1aac1e91 | 1757 | if (!brcmf_fws_fc_active(fws)) { |
3edc1cff | 1758 | /* If the protocol uses a data header, apply it */ |
31ed07dc | 1759 | brcmf_proto_hdrpush(drvr, ifp->ifidx, 0, skb); |
3edc1cff AS |
1760 | |
1761 | /* Use bus module to send data frame */ | |
1762 | return brcmf_bus_txdata(drvr->bus_if, skb); | |
1763 | } | |
1764 | ||
1765 | /* set control buffer information */ | |
84bcc0c3 | 1766 | skcb->if_flags = 0; |
3edc1cff | 1767 | skcb->state = BRCMF_FWS_SKBSTATE_NEW; |
31ed07dc | 1768 | brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx); |
3edc1cff AS |
1769 | if (!multicast) |
1770 | fifo = brcmf_fws_prio2fifo[skb->priority]; | |
3edc1cff | 1771 | |
3edc1cff | 1772 | brcmf_fws_lock(drvr, flags); |
20863746 AS |
1773 | if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC) |
1774 | fws->borrow_defer_timestamp = jiffies + | |
1775 | BRCMF_FWS_BORROW_DEFER_PERIOD; | |
456d0685 AS |
1776 | |
1777 | skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest); | |
1778 | brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name, | |
1779 | eh->h_dest, multicast, fifo); | |
1780 | if (!brcmf_fws_assign_htod(fws, skb, fifo)) { | |
1781 | brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb); | |
1782 | brcmf_fws_schedule_deq(fws); | |
1783 | } else { | |
1784 | brcmf_err("drop skb: no hanger slot\n"); | |
28a905b5 AS |
1785 | if (pae) { |
1786 | atomic_dec(&ifp->pend_8021x_cnt); | |
1787 | if (waitqueue_active(&ifp->pend_8021x_wait)) | |
1788 | wake_up(&ifp->pend_8021x_wait); | |
1789 | } | |
456d0685 AS |
1790 | brcmu_pkt_buf_free_skb(skb); |
1791 | } | |
3edc1cff AS |
1792 | brcmf_fws_unlock(drvr, flags); |
1793 | return 0; | |
1794 | } | |
1795 | ||
bb8c8063 AS |
1796 | void brcmf_fws_reset_interface(struct brcmf_if *ifp) |
1797 | { | |
1798 | struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; | |
1799 | ||
1800 | brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx); | |
1801 | if (!entry) | |
1802 | return; | |
1803 | ||
1ab083a3 | 1804 | brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
bb8c8063 AS |
1805 | } |
1806 | ||
1807 | void brcmf_fws_add_interface(struct brcmf_if *ifp) | |
1808 | { | |
84bcc0c3 | 1809 | struct brcmf_fws_info *fws = ifp->drvr->fws; |
bb8c8063 AS |
1810 | struct brcmf_fws_mac_descriptor *entry; |
1811 | ||
01b8e7db | 1812 | if (!ifp->ndev || !ifp->drvr->fw_signals) |
bb8c8063 AS |
1813 | return; |
1814 | ||
84bcc0c3 AS |
1815 | entry = &fws->desc.iface[ifp->ifidx]; |
1816 | ifp->fws_desc = entry; | |
1ab083a3 | 1817 | brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
8071fd61 | 1818 | brcmf_fws_macdesc_set_name(fws, entry); |
84bcc0c3 AS |
1819 | brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
1820 | BRCMF_FWS_PSQ_LEN); | |
8071fd61 | 1821 | brcmf_dbg(TRACE, "added %s\n", entry->name); |
bb8c8063 AS |
1822 | } |
1823 | ||
1824 | void brcmf_fws_del_interface(struct brcmf_if *ifp) | |
1825 | { | |
1826 | struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; | |
6d421e54 | 1827 | ulong flags; |
bb8c8063 | 1828 | |
bb8c8063 AS |
1829 | if (!entry) |
1830 | return; | |
1831 | ||
6d421e54 | 1832 | brcmf_fws_lock(ifp->drvr, flags); |
bb8c8063 | 1833 | ifp->fws_desc = NULL; |
8071fd61 | 1834 | brcmf_dbg(TRACE, "deleting %s\n", entry->name); |
1ab083a3 | 1835 | brcmf_fws_macdesc_deinit(entry); |
a3e993c7 | 1836 | brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx); |
6d421e54 | 1837 | brcmf_fws_unlock(ifp->drvr, flags); |
84bcc0c3 AS |
1838 | } |
1839 | ||
1840 | static void brcmf_fws_dequeue_worker(struct work_struct *worker) | |
1841 | { | |
1842 | struct brcmf_fws_info *fws; | |
1843 | struct sk_buff *skb; | |
1844 | ulong flags; | |
1845 | int fifo; | |
84bcc0c3 AS |
1846 | |
1847 | fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work); | |
1848 | ||
84bcc0c3 | 1849 | brcmf_fws_lock(fws->drvr, flags); |
2a5d7b02 | 1850 | for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked; |
df50f756 | 1851 | fifo--) { |
7d747037 HM |
1852 | while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) && |
1853 | (fifo == BRCMF_FWS_FIFO_BCMC))) { | |
84bcc0c3 | 1854 | skb = brcmf_fws_deq(fws, fifo); |
289ec1c7 | 1855 | if (!skb) |
84bcc0c3 | 1856 | break; |
fa587d4b | 1857 | fws->fifo_credit[fifo]--; |
289ec1c7 AS |
1858 | if (brcmf_fws_commit_skb(fws, fifo, skb)) |
1859 | break; | |
df50f756 HM |
1860 | if (fws->bus_flow_blocked) |
1861 | break; | |
84bcc0c3 | 1862 | } |
1aac1e91 | 1863 | if ((fifo == BRCMF_FWS_FIFO_AC_BE) && |
289ec1c7 | 1864 | (fws->fifo_credit[fifo] == 0) && |
df50f756 | 1865 | (!fws->bus_flow_blocked)) { |
1aac1e91 AS |
1866 | while (brcmf_fws_borrow_credit(fws) == 0) { |
1867 | skb = brcmf_fws_deq(fws, fifo); | |
1868 | if (!skb) { | |
1869 | brcmf_fws_return_credits(fws, fifo, 1); | |
1870 | break; | |
1871 | } | |
eb2410cd HM |
1872 | if (brcmf_fws_commit_skb(fws, fifo, skb)) |
1873 | break; | |
df50f756 HM |
1874 | if (fws->bus_flow_blocked) |
1875 | break; | |
1aac1e91 | 1876 | } |
1aac1e91 | 1877 | } |
84bcc0c3 AS |
1878 | } |
1879 | brcmf_fws_unlock(fws->drvr, flags); | |
bb8c8063 | 1880 | } |
c7f34a69 | 1881 | |
d9337414 AS |
1882 | int brcmf_fws_init(struct brcmf_pub *drvr) |
1883 | { | |
290fb763 | 1884 | u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS; |
d9337414 AS |
1885 | int rc; |
1886 | ||
47829f4f AS |
1887 | if (!drvr->fw_signals) |
1888 | return 0; | |
1889 | ||
d9337414 AS |
1890 | spin_lock_init(&drvr->fws_spinlock); |
1891 | ||
1892 | drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL); | |
1893 | if (!drvr->fws) { | |
1894 | rc = -ENOMEM; | |
1895 | goto fail; | |
1896 | } | |
1897 | ||
1898 | /* set linkage back */ | |
1899 | drvr->fws->drvr = drvr; | |
1900 | drvr->fws->fcmode = fcmode; | |
1901 | ||
84bcc0c3 AS |
1902 | drvr->fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq"); |
1903 | if (drvr->fws->fws_wq == NULL) { | |
1904 | brcmf_err("workqueue creation failed\n"); | |
1905 | rc = -EBADF; | |
1906 | goto fail; | |
1907 | } | |
1908 | INIT_WORK(&drvr->fws->fws_dequeue_work, brcmf_fws_dequeue_worker); | |
1909 | ||
290fb763 AS |
1910 | /* enable firmware signalling if fcmode active */ |
1911 | if (drvr->fws->fcmode != BRCMF_FWS_FCMODE_NONE) | |
1912 | tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS | | |
33753d47 AS |
1913 | BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS | |
1914 | BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE; | |
290fb763 | 1915 | |
a786b38d AS |
1916 | rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP, |
1917 | brcmf_fws_notify_credit_map); | |
d9337414 | 1918 | if (rc < 0) { |
a786b38d | 1919 | brcmf_err("register credit map handler failed\n"); |
d9337414 AS |
1920 | goto fail; |
1921 | } | |
7d747037 HM |
1922 | rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT, |
1923 | brcmf_fws_notify_bcmc_credit_support); | |
1924 | if (rc < 0) { | |
1925 | brcmf_err("register bcmc credit handler failed\n"); | |
1926 | brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP); | |
1927 | goto fail; | |
1928 | } | |
d9337414 | 1929 | |
a786b38d AS |
1930 | /* setting the iovar may fail if feature is unsupported |
1931 | * so leave the rc as is so driver initialization can | |
1932 | * continue. | |
1933 | */ | |
1934 | if (brcmf_fil_iovar_int_set(drvr->iflist[0], "tlv", tlv)) { | |
1935 | brcmf_err("failed to set bdcv2 tlv signaling\n"); | |
1936 | goto fail_event; | |
d9337414 AS |
1937 | } |
1938 | ||
1939 | brcmf_fws_hanger_init(&drvr->fws->hanger); | |
1ab083a3 | 1940 | brcmf_fws_macdesc_init(&drvr->fws->desc.other, NULL, 0); |
8071fd61 | 1941 | brcmf_fws_macdesc_set_name(drvr->fws, &drvr->fws->desc.other); |
84bcc0c3 AS |
1942 | brcmu_pktq_init(&drvr->fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT, |
1943 | BRCMF_FWS_PSQ_LEN); | |
d9337414 AS |
1944 | |
1945 | /* create debugfs file for statistics */ | |
1946 | brcmf_debugfs_create_fws_stats(drvr, &drvr->fws->stats); | |
1947 | ||
8071fd61 | 1948 | brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n", |
d9337414 AS |
1949 | drvr->fw_signals ? "enabled" : "disabled", tlv); |
1950 | return 0; | |
1951 | ||
a786b38d | 1952 | fail_event: |
7d747037 | 1953 | brcmf_fweh_unregister(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT); |
a786b38d | 1954 | brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP); |
d9337414 | 1955 | fail: |
d9337414 AS |
1956 | brcmf_fws_deinit(drvr); |
1957 | return rc; | |
1958 | } | |
1959 | ||
1960 | void brcmf_fws_deinit(struct brcmf_pub *drvr) | |
1961 | { | |
1962 | struct brcmf_fws_info *fws = drvr->fws; | |
1963 | ulong flags; | |
1964 | ||
47829f4f AS |
1965 | if (!fws) |
1966 | return; | |
1967 | ||
a786b38d AS |
1968 | /* disable firmware signalling entirely |
1969 | * to avoid using the workqueue. | |
1970 | */ | |
1971 | drvr->fw_signals = false; | |
1972 | ||
1973 | if (drvr->fws->fws_wq) | |
1974 | destroy_workqueue(drvr->fws->fws_wq); | |
1975 | ||
d9337414 AS |
1976 | /* cleanup */ |
1977 | brcmf_fws_lock(drvr, flags); | |
1978 | brcmf_fws_cleanup(fws, -1); | |
1979 | drvr->fws = NULL; | |
1980 | brcmf_fws_unlock(drvr, flags); | |
1981 | ||
1982 | /* free top structure */ | |
1983 | kfree(fws); | |
1984 | } | |
1985 | ||
c7f34a69 AS |
1986 | bool brcmf_fws_fc_active(struct brcmf_fws_info *fws) |
1987 | { | |
1988 | if (!fws) | |
1989 | return false; | |
1990 | ||
c7f34a69 AS |
1991 | return fws->fcmode != BRCMF_FWS_FCMODE_NONE; |
1992 | } | |
0f8b5cc5 AS |
1993 | |
1994 | void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb) | |
1995 | { | |
1996 | ulong flags; | |
fa587d4b | 1997 | u32 hslot; |
0f8b5cc5 | 1998 | |
c7773fc1 AS |
1999 | if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) { |
2000 | brcmu_pkt_buf_free_skb(skb); | |
2001 | return; | |
2002 | } | |
0f8b5cc5 | 2003 | brcmf_fws_lock(fws->drvr, flags); |
fa587d4b HM |
2004 | hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
2005 | brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0); | |
0f8b5cc5 AS |
2006 | brcmf_fws_unlock(fws->drvr, flags); |
2007 | } | |
df50f756 HM |
2008 | |
2009 | void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked) | |
2010 | { | |
2011 | struct brcmf_fws_info *fws = drvr->fws; | |
2012 | ||
2013 | fws->bus_flow_blocked = flow_blocked; | |
2014 | if (!flow_blocked) | |
2015 | brcmf_fws_schedule_deq(fws); | |
5631becb AS |
2016 | else |
2017 | fws->stats.bus_flow_block++; | |
df50f756 | 2018 | } |