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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 | |
5c9417f1 | 28 | #define TX_HW_BLOCK_SIZE 252 |
f5fc0f86 LC |
29 | |
30 | #define TX_HW_MGMT_PKT_LIFETIME_TU 2000 | |
beb6c880 | 31 | #define TX_HW_AP_MODE_PKT_LIFETIME_TU 8000 |
f5fc0f86 LC |
32 | /* The chipset reference driver states, that the "aid" value 1 |
33 | * is for infra-BSS, but is still always used */ | |
34 | #define TX_HW_DEFAULT_AID 1 | |
35 | ||
36 | #define TX_HW_ATTR_SAVE_RETRIES BIT(0) | |
37 | #define TX_HW_ATTR_HEADER_PAD BIT(1) | |
38 | #define TX_HW_ATTR_SESSION_COUNTER (BIT(2) | BIT(3) | BIT(4)) | |
39 | #define TX_HW_ATTR_RATE_POLICY (BIT(5) | BIT(6) | BIT(7) | \ | |
40 | BIT(8) | BIT(9)) | |
41 | #define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11)) | |
42 | #define TX_HW_ATTR_TX_CMPLT_REQ BIT(12) | |
ae47c45f SL |
43 | #define TX_HW_ATTR_TX_DUMMY_REQ BIT(13) |
44 | ||
f5fc0f86 LC |
45 | #define TX_HW_ATTR_OFST_SAVE_RETRIES 0 |
46 | #define TX_HW_ATTR_OFST_HEADER_PAD 1 | |
47 | #define TX_HW_ATTR_OFST_SESSION_COUNTER 2 | |
48 | #define TX_HW_ATTR_OFST_RATE_POLICY 5 | |
49 | #define TX_HW_ATTR_OFST_LAST_WORD_PAD 10 | |
50 | #define TX_HW_ATTR_OFST_TX_CMPLT_REQ 12 | |
51 | ||
52 | #define TX_HW_RESULT_QUEUE_LEN 16 | |
53 | #define TX_HW_RESULT_QUEUE_LEN_MASK 0xf | |
54 | ||
55 | #define WL1271_TX_ALIGN_TO 4 | |
f5fc0f86 LC |
56 | #define WL1271_TKIP_IV_SPACE 4 |
57 | ||
ae47c45f SL |
58 | /* Used for management frames and dummy packets */ |
59 | #define WL1271_TID_MGMT 7 | |
60 | ||
48a61477 SL |
61 | struct wl127x_tx_mem { |
62 | /* | |
63 | * Number of extra memory blocks to allocate for this packet | |
64 | * in addition to the number of blocks derived from the packet | |
65 | * length. | |
66 | */ | |
67 | u8 extra_blocks; | |
68 | /* | |
69 | * Total number of memory blocks allocated by the host for | |
70 | * this packet. Must be equal or greater than the actual | |
71 | * blocks number allocated by HW. | |
72 | */ | |
73 | u8 total_mem_blocks; | |
74 | } __packed; | |
75 | ||
76 | struct wl128x_tx_mem { | |
77 | /* | |
78 | * Total number of memory blocks allocated by the host for | |
79 | * this packet. | |
80 | */ | |
81 | u8 total_mem_blocks; | |
82 | /* | |
83 | * Number of extra bytes, at the end of the frame. the host | |
84 | * uses this padding to complete each frame to integer number | |
85 | * of SDIO blocks. | |
86 | */ | |
87 | u8 extra_bytes; | |
88 | } __packed; | |
89 | ||
0da13da7 IY |
90 | /* |
91 | * On wl128x based devices, when TX packets are aggregated, each packet | |
92 | * size must be aligned to the SDIO block size. The maximum block size | |
93 | * is bounded by the type of the padded bytes field that is sent to the | |
94 | * FW. Currently the type is u8, so the maximum block size is 256 bytes. | |
95 | */ | |
96 | #define WL12XX_BUS_BLOCK_SIZE min(512u, \ | |
97 | (1u << (8 * sizeof(((struct wl128x_tx_mem *) 0)->extra_bytes)))) | |
98 | ||
f5fc0f86 LC |
99 | struct wl1271_tx_hw_descr { |
100 | /* Length of packet in words, including descriptor+header+data */ | |
d0f63b20 | 101 | __le16 length; |
48a61477 SL |
102 | union { |
103 | struct wl127x_tx_mem wl127x_mem; | |
104 | struct wl128x_tx_mem wl128x_mem; | |
105 | } __packed; | |
f5fc0f86 | 106 | /* Device time (in us) when the packet arrived to the driver */ |
d0f63b20 | 107 | __le32 start_time; |
48a61477 SL |
108 | /* |
109 | * Max delay in TUs until transmission. The last device time the | |
110 | * packet can be transmitted is: start_time + (1024 * life_time) | |
111 | */ | |
d0f63b20 | 112 | __le16 life_time; |
f5fc0f86 | 113 | /* Bitwise fields - see TX_ATTR... definitions above. */ |
d0f63b20 | 114 | __le16 tx_attr; |
f5fc0f86 LC |
115 | /* Packet identifier used also in the Tx-Result. */ |
116 | u8 id; | |
117 | /* The packet TID value (as User-Priority) */ | |
118 | u8 tid; | |
beb6c880 AN |
119 | union { |
120 | /* STA - Identifier of the remote STA in IBSS, 1 in infra-BSS */ | |
121 | u8 aid; | |
122 | /* AP - host link ID (HLID) */ | |
123 | u8 hlid; | |
124 | } __packed; | |
f5fc0f86 | 125 | u8 reserved; |
ba2d3587 | 126 | } __packed; |
f5fc0f86 LC |
127 | |
128 | enum wl1271_tx_hw_res_status { | |
129 | TX_SUCCESS = 0, | |
130 | TX_HW_ERROR = 1, | |
131 | TX_DISABLED = 2, | |
132 | TX_RETRY_EXCEEDED = 3, | |
133 | TX_TIMEOUT = 4, | |
134 | TX_KEY_NOT_FOUND = 5, | |
135 | TX_PEER_NOT_FOUND = 6, | |
136 | TX_SESSION_MISMATCH = 7 | |
137 | }; | |
138 | ||
139 | struct wl1271_tx_hw_res_descr { | |
140 | /* Packet Identifier - same value used in the Tx descriptor.*/ | |
141 | u8 id; | |
142 | /* The status of the transmission, indicating success or one of | |
143 | several possible reasons for failure. */ | |
144 | u8 status; | |
145 | /* Total air access duration including all retrys and overheads.*/ | |
d0f63b20 | 146 | __le16 medium_usage; |
f5fc0f86 | 147 | /* The time passed from host xfer to Tx-complete.*/ |
d0f63b20 | 148 | __le32 fw_handling_time; |
f5fc0f86 LC |
149 | /* Total media delay |
150 | (from 1st EDCA AIFS counter until TX Complete). */ | |
d0f63b20 | 151 | __le32 medium_delay; |
f5fc0f86 | 152 | /* LS-byte of last TKIP seq-num (saved per AC for recovery). */ |
b992c682 | 153 | u8 tx_security_sequence_number_lsb; |
f5fc0f86 LC |
154 | /* Retry count - number of transmissions without successful ACK.*/ |
155 | u8 ack_failures; | |
156 | /* The rate that succeeded getting ACK | |
157 | (Valid only if status=SUCCESS). */ | |
158 | u8 rate_class_index; | |
159 | /* for 4-byte alignment. */ | |
160 | u8 spare; | |
ba2d3587 | 161 | } __packed; |
f5fc0f86 LC |
162 | |
163 | struct wl1271_tx_hw_res_if { | |
d0f63b20 LC |
164 | __le32 tx_result_fw_counter; |
165 | __le32 tx_result_host_counter; | |
f5fc0f86 | 166 | struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN]; |
ba2d3587 | 167 | } __packed; |
f5fc0f86 | 168 | |
c6999d83 KV |
169 | static inline int wl1271_tx_get_queue(int queue) |
170 | { | |
c6999d83 KV |
171 | switch (queue) { |
172 | case 0: | |
173 | return CONF_TX_AC_VO; | |
174 | case 1: | |
175 | return CONF_TX_AC_VI; | |
176 | case 2: | |
177 | return CONF_TX_AC_BE; | |
178 | case 3: | |
179 | return CONF_TX_AC_BK; | |
180 | default: | |
181 | return CONF_TX_AC_BE; | |
182 | } | |
183 | } | |
184 | ||
708bb3cf AN |
185 | static inline int wl1271_tx_get_mac80211_queue(int queue) |
186 | { | |
187 | switch (queue) { | |
188 | case CONF_TX_AC_VO: | |
189 | return 0; | |
190 | case CONF_TX_AC_VI: | |
191 | return 1; | |
192 | case CONF_TX_AC_BE: | |
193 | return 2; | |
194 | case CONF_TX_AC_BK: | |
195 | return 3; | |
196 | default: | |
197 | return 2; | |
198 | } | |
199 | } | |
200 | ||
f5fc0f86 | 201 | void wl1271_tx_work(struct work_struct *work); |
a522550a | 202 | void wl1271_tx_work_locked(struct wl1271 *wl); |
ffb591cd | 203 | void wl1271_tx_complete(struct wl1271 *wl); |
7dece1c8 | 204 | void wl1271_tx_reset(struct wl1271 *wl, bool reset_tx_queues); |
f5fc0f86 | 205 | void wl1271_tx_flush(struct wl1271 *wl); |
6a2de93b | 206 | u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); |
ebba60c6 | 207 | u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set); |
e0fe371b | 208 | u32 wl1271_tx_min_rate_get(struct wl1271 *wl); |
a8c0ddb5 AN |
209 | u8 wl1271_tx_get_hlid(struct sk_buff *skb); |
210 | void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid); | |
211 | void wl1271_handle_tx_low_watermark(struct wl1271 *wl); | |
f5fc0f86 LC |
212 | |
213 | #endif |