Commit | Line | Data |
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f5fc0f86 LC |
1 | /* |
2 | * This file is part of wl1271 | |
3 | * | |
4 | * Copyright (C) 1998-2009 Texas Instruments. All rights reserved. | |
5 | * Copyright (C) 2009 Nokia Corporation | |
6 | * | |
7 | * Contact: Luciano Coelho <luciano.coelho@nokia.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
21 | * 02110-1301 USA | |
22 | * | |
23 | */ | |
24 | ||
00d20100 SL |
25 | #ifndef __TX_H__ |
26 | #define __TX_H__ | |
f5fc0f86 | 27 | |
f5fc0f86 | 28 | #define TX_HW_MGMT_PKT_LIFETIME_TU 2000 |
beb6c880 | 29 | #define TX_HW_AP_MODE_PKT_LIFETIME_TU 8000 |
f5fc0f86 LC |
30 | |
31 | #define TX_HW_ATTR_SAVE_RETRIES BIT(0) | |
32 | #define TX_HW_ATTR_HEADER_PAD BIT(1) | |
33 | #define TX_HW_ATTR_SESSION_COUNTER (BIT(2) | BIT(3) | BIT(4)) | |
34 | #define TX_HW_ATTR_RATE_POLICY (BIT(5) | BIT(6) | BIT(7) | \ | |
35 | BIT(8) | BIT(9)) | |
36 | #define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11)) | |
37 | #define TX_HW_ATTR_TX_CMPLT_REQ BIT(12) | |
ae47c45f | 38 | #define TX_HW_ATTR_TX_DUMMY_REQ BIT(13) |
f4f57943 | 39 | #define TX_HW_ATTR_HOST_ENCRYPT BIT(14) |
ae47c45f | 40 | |
f5fc0f86 LC |
41 | #define TX_HW_ATTR_OFST_SAVE_RETRIES 0 |
42 | #define TX_HW_ATTR_OFST_HEADER_PAD 1 | |
43 | #define TX_HW_ATTR_OFST_SESSION_COUNTER 2 | |
44 | #define TX_HW_ATTR_OFST_RATE_POLICY 5 | |
45 | #define TX_HW_ATTR_OFST_LAST_WORD_PAD 10 | |
46 | #define TX_HW_ATTR_OFST_TX_CMPLT_REQ 12 | |
47 | ||
48 | #define TX_HW_RESULT_QUEUE_LEN 16 | |
49 | #define TX_HW_RESULT_QUEUE_LEN_MASK 0xf | |
50 | ||
51 | #define WL1271_TX_ALIGN_TO 4 | |
5ec8a448 EP |
52 | #define WL1271_EXTRA_SPACE_TKIP 4 |
53 | #define WL1271_EXTRA_SPACE_AES 8 | |
54 | #define WL1271_EXTRA_SPACE_MAX 8 | |
f5fc0f86 | 55 | |
ae47c45f SL |
56 | /* Used for management frames and dummy packets */ |
57 | #define WL1271_TID_MGMT 7 | |
58 | ||
48a61477 SL |
59 | struct wl127x_tx_mem { |
60 | /* | |
61 | * Number of extra memory blocks to allocate for this packet | |
62 | * in addition to the number of blocks derived from the packet | |
63 | * length. | |
64 | */ | |
65 | u8 extra_blocks; | |
66 | /* | |
67 | * Total number of memory blocks allocated by the host for | |
68 | * this packet. Must be equal or greater than the actual | |
69 | * blocks number allocated by HW. | |
70 | */ | |
71 | u8 total_mem_blocks; | |
72 | } __packed; | |
73 | ||
74 | struct wl128x_tx_mem { | |
75 | /* | |
76 | * Total number of memory blocks allocated by the host for | |
77 | * this packet. | |
78 | */ | |
79 | u8 total_mem_blocks; | |
80 | /* | |
81 | * Number of extra bytes, at the end of the frame. the host | |
82 | * uses this padding to complete each frame to integer number | |
83 | * of SDIO blocks. | |
84 | */ | |
85 | u8 extra_bytes; | |
86 | } __packed; | |
87 | ||
fb0f2e4a AN |
88 | struct wl18xx_tx_mem { |
89 | /* | |
90 | * Total number of memory blocks allocated by the host for | |
91 | * this packet. | |
92 | */ | |
93 | u8 total_mem_blocks; | |
94 | ||
95 | /* | |
9fccc82e | 96 | * control bits |
fb0f2e4a | 97 | */ |
9fccc82e | 98 | u8 ctrl; |
fb0f2e4a AN |
99 | } __packed; |
100 | ||
0da13da7 IY |
101 | /* |
102 | * On wl128x based devices, when TX packets are aggregated, each packet | |
103 | * size must be aligned to the SDIO block size. The maximum block size | |
104 | * is bounded by the type of the padded bytes field that is sent to the | |
105 | * FW. Currently the type is u8, so the maximum block size is 256 bytes. | |
106 | */ | |
107 | #define WL12XX_BUS_BLOCK_SIZE min(512u, \ | |
108 | (1u << (8 * sizeof(((struct wl128x_tx_mem *) 0)->extra_bytes)))) | |
109 | ||
f5fc0f86 LC |
110 | struct wl1271_tx_hw_descr { |
111 | /* Length of packet in words, including descriptor+header+data */ | |
d0f63b20 | 112 | __le16 length; |
48a61477 SL |
113 | union { |
114 | struct wl127x_tx_mem wl127x_mem; | |
115 | struct wl128x_tx_mem wl128x_mem; | |
fb0f2e4a | 116 | struct wl18xx_tx_mem wl18xx_mem; |
48a61477 | 117 | } __packed; |
f5fc0f86 | 118 | /* Device time (in us) when the packet arrived to the driver */ |
d0f63b20 | 119 | __le32 start_time; |
48a61477 SL |
120 | /* |
121 | * Max delay in TUs until transmission. The last device time the | |
122 | * packet can be transmitted is: start_time + (1024 * life_time) | |
123 | */ | |
d0f63b20 | 124 | __le16 life_time; |
f5fc0f86 | 125 | /* Bitwise fields - see TX_ATTR... definitions above. */ |
d0f63b20 | 126 | __le16 tx_attr; |
f5fc0f86 LC |
127 | /* Packet identifier used also in the Tx-Result. */ |
128 | u8 id; | |
129 | /* The packet TID value (as User-Priority) */ | |
130 | u8 tid; | |
79b122dc EP |
131 | /* host link ID (HLID) */ |
132 | u8 hlid; | |
2fc28de5 AN |
133 | |
134 | union { | |
135 | u8 wl12xx_reserved; | |
136 | ||
137 | /* | |
138 | * bit 0 -> 0 = udp, 1 = tcp | |
139 | * bit 1:7 -> IP header offset | |
140 | */ | |
141 | u8 wl18xx_checksum_data; | |
142 | } __packed; | |
ba2d3587 | 143 | } __packed; |
f5fc0f86 LC |
144 | |
145 | enum wl1271_tx_hw_res_status { | |
146 | TX_SUCCESS = 0, | |
147 | TX_HW_ERROR = 1, | |
148 | TX_DISABLED = 2, | |
149 | TX_RETRY_EXCEEDED = 3, | |
150 | TX_TIMEOUT = 4, | |
151 | TX_KEY_NOT_FOUND = 5, | |
152 | TX_PEER_NOT_FOUND = 6, | |
79b122dc EP |
153 | TX_SESSION_MISMATCH = 7, |
154 | TX_LINK_NOT_VALID = 8, | |
f5fc0f86 LC |
155 | }; |
156 | ||
157 | struct wl1271_tx_hw_res_descr { | |
158 | /* Packet Identifier - same value used in the Tx descriptor.*/ | |
159 | u8 id; | |
160 | /* The status of the transmission, indicating success or one of | |
161 | several possible reasons for failure. */ | |
162 | u8 status; | |
163 | /* Total air access duration including all retrys and overheads.*/ | |
d0f63b20 | 164 | __le16 medium_usage; |
f5fc0f86 | 165 | /* The time passed from host xfer to Tx-complete.*/ |
d0f63b20 | 166 | __le32 fw_handling_time; |
f5fc0f86 LC |
167 | /* Total media delay |
168 | (from 1st EDCA AIFS counter until TX Complete). */ | |
d0f63b20 | 169 | __le32 medium_delay; |
f5fc0f86 | 170 | /* LS-byte of last TKIP seq-num (saved per AC for recovery). */ |
b992c682 | 171 | u8 tx_security_sequence_number_lsb; |
f5fc0f86 LC |
172 | /* Retry count - number of transmissions without successful ACK.*/ |
173 | u8 ack_failures; | |
174 | /* The rate that succeeded getting ACK | |
175 | (Valid only if status=SUCCESS). */ | |
176 | u8 rate_class_index; | |
177 | /* for 4-byte alignment. */ | |
178 | u8 spare; | |
ba2d3587 | 179 | } __packed; |
f5fc0f86 LC |
180 | |
181 | struct wl1271_tx_hw_res_if { | |
d0f63b20 LC |
182 | __le32 tx_result_fw_counter; |
183 | __le32 tx_result_host_counter; | |
f5fc0f86 | 184 | struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN]; |
ba2d3587 | 185 | } __packed; |
f5fc0f86 | 186 | |
66396114 AN |
187 | enum wlcore_queue_stop_reason { |
188 | WLCORE_QUEUE_STOP_REASON_WATERMARK, | |
189 | WLCORE_QUEUE_STOP_REASON_FW_RESTART, | |
2c38849f | 190 | WLCORE_QUEUE_STOP_REASON_FLUSH, |
a1c597f2 | 191 | WLCORE_QUEUE_STOP_REASON_SPARE_BLK, /* 18xx specific */ |
66396114 AN |
192 | }; |
193 | ||
c6999d83 KV |
194 | static inline int wl1271_tx_get_queue(int queue) |
195 | { | |
c6999d83 KV |
196 | switch (queue) { |
197 | case 0: | |
198 | return CONF_TX_AC_VO; | |
199 | case 1: | |
200 | return CONF_TX_AC_VI; | |
201 | case 2: | |
202 | return CONF_TX_AC_BE; | |
203 | case 3: | |
204 | return CONF_TX_AC_BK; | |
205 | default: | |
206 | return CONF_TX_AC_BE; | |
207 | } | |
208 | } | |
209 | ||
708bb3cf AN |
210 | static inline int wl1271_tx_get_mac80211_queue(int queue) |
211 | { | |
212 | switch (queue) { | |
213 | case CONF_TX_AC_VO: | |
214 | return 0; | |
215 | case CONF_TX_AC_VI: | |
216 | return 1; | |
217 | case CONF_TX_AC_BE: | |
218 | return 2; | |
219 | case CONF_TX_AC_BK: | |
220 | return 3; | |
221 | default: | |
222 | return 2; | |
223 | } | |
224 | } | |
225 | ||
f1a46384 AN |
226 | static inline int wl1271_tx_total_queue_count(struct wl1271 *wl) |
227 | { | |
228 | int i, count = 0; | |
229 | ||
230 | for (i = 0; i < NUM_TX_QUEUES; i++) | |
231 | count += wl->tx_queue_count[i]; | |
232 | ||
233 | return count; | |
234 | } | |
235 | ||
f5fc0f86 | 236 | void wl1271_tx_work(struct work_struct *work); |
a32d0cdf | 237 | void wl1271_tx_work_locked(struct wl1271 *wl); |
045b9b5f | 238 | int wlcore_tx_complete(struct wl1271 *wl); |
d6a3cc2e | 239 | void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif); |
66396114 | 240 | void wl12xx_tx_reset(struct wl1271 *wl); |
f5fc0f86 | 241 | void wl1271_tx_flush(struct wl1271 *wl); |
43a8bc5a | 242 | u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum ieee80211_band band); |
af7fbb28 EP |
243 | u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set, |
244 | enum ieee80211_band rate_band); | |
245 | u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set); | |
a8ab39a4 EP |
246 | u8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
247 | struct sk_buff *skb); | |
d6a3cc2e EP |
248 | u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
249 | struct sk_buff *skb); | |
a8c0ddb5 AN |
250 | void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid); |
251 | void wl1271_handle_tx_low_watermark(struct wl1271 *wl); | |
f8e0af6b | 252 | bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb); |
9eb599e9 | 253 | void wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids); |
b3b4b4b8 AN |
254 | unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl, |
255 | unsigned int packet_length); | |
872b345f | 256 | void wl1271_free_tx_id(struct wl1271 *wl, int id); |
66396114 AN |
257 | void wlcore_stop_queue_locked(struct wl1271 *wl, u8 queue, |
258 | enum wlcore_queue_stop_reason reason); | |
259 | void wlcore_stop_queue(struct wl1271 *wl, u8 queue, | |
260 | enum wlcore_queue_stop_reason reason); | |
261 | void wlcore_wake_queue(struct wl1271 *wl, u8 queue, | |
262 | enum wlcore_queue_stop_reason reason); | |
263 | void wlcore_stop_queues(struct wl1271 *wl, | |
264 | enum wlcore_queue_stop_reason reason); | |
265 | void wlcore_wake_queues(struct wl1271 *wl, | |
266 | enum wlcore_queue_stop_reason reason); | |
267 | void wlcore_reset_stopped_queues(struct wl1271 *wl); | |
268 | bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl, u8 queue, | |
269 | enum wlcore_queue_stop_reason reason); | |
270 | bool wlcore_is_queue_stopped(struct wl1271 *wl, u8 queue); | |
f5fc0f86 | 271 | |
f1acea9a | 272 | /* from main.c */ |
c7ffb902 | 273 | void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid); |
55df5afb | 274 | void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl); |
f1acea9a | 275 | |
f5fc0f86 | 276 | #endif |