1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* This file is part of wl1271
*
* Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
* Copyright (C) 2009 Nokia Corporation
*
* Contact: Luciano Coelho <luciano.coelho@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef __WL1271_TX_H__
#define __WL1271_TX_H__
#define TX_HW_BLOCK_SPARE 2
#define TX_HW_BLOCK_SHIFT_DIV 8
#define TX_HW_MGMT_PKT_LIFETIME_TU 2000
/* The chipset reference driver states, that the "aid" value 1
* is for infra-BSS, but is still always used */
#define TX_HW_DEFAULT_AID 1
#define TX_HW_ATTR_SAVE_RETRIES BIT(0)
#define TX_HW_ATTR_HEADER_PAD BIT(1)
#define TX_HW_ATTR_SESSION_COUNTER (BIT(2) | BIT(3) | BIT(4))
#define TX_HW_ATTR_RATE_POLICY (BIT(5) | BIT(6) | BIT(7) | \
BIT(8) | BIT(9))
#define TX_HW_ATTR_LAST_WORD_PAD (BIT(10) | BIT(11))
#define TX_HW_ATTR_TX_CMPLT_REQ BIT(12)
#define TX_HW_ATTR_OFST_SAVE_RETRIES 0
#define TX_HW_ATTR_OFST_HEADER_PAD 1
#define TX_HW_ATTR_OFST_SESSION_COUNTER 2
#define TX_HW_ATTR_OFST_RATE_POLICY 5
#define TX_HW_ATTR_OFST_LAST_WORD_PAD 10
#define TX_HW_ATTR_OFST_TX_CMPLT_REQ 12
#define TX_HW_RESULT_QUEUE_LEN 16
#define TX_HW_RESULT_QUEUE_LEN_MASK 0xf
#define WL1271_TX_ALIGN_TO 4
#define WL1271_TX_ALIGN(len) (((len) + WL1271_TX_ALIGN_TO - 1) & \
~(WL1271_TX_ALIGN_TO - 1))
#define WL1271_TKIP_IV_SPACE 4
struct wl1271_tx_hw_descr {
/* Length of packet in words, including descriptor+header+data */
__le16 length;
/* Number of extra memory blocks to allocate for this packet in
addition to the number of blocks derived from the packet length */
u8 extra_mem_blocks;
/* Total number of memory blocks allocated by the host for this packet.
Must be equal or greater than the actual blocks number allocated by
HW!! */
u8 total_mem_blocks;
/* Device time (in us) when the packet arrived to the driver */
__le32 start_time;
/* Max delay in TUs until transmission. The last device time the
packet can be transmitted is: startTime+(1024*LifeTime) */
__le16 life_time;
/* Bitwise fields - see TX_ATTR... definitions above. */
__le16 tx_attr;
/* Packet identifier used also in the Tx-Result. */
u8 id;
/* The packet TID value (as User-Priority) */
u8 tid;
/* Identifier of the remote STA in IBSS, 1 in infra-BSS */
u8 aid;
u8 reserved;
} __attribute__ ((packed));
enum wl1271_tx_hw_res_status {
TX_SUCCESS = 0,
TX_HW_ERROR = 1,
TX_DISABLED = 2,
TX_RETRY_EXCEEDED = 3,
TX_TIMEOUT = 4,
TX_KEY_NOT_FOUND = 5,
TX_PEER_NOT_FOUND = 6,
TX_SESSION_MISMATCH = 7
};
struct wl1271_tx_hw_res_descr {
/* Packet Identifier - same value used in the Tx descriptor.*/
u8 id;
/* The status of the transmission, indicating success or one of
several possible reasons for failure. */
u8 status;
/* Total air access duration including all retrys and overheads.*/
__le16 medium_usage;
/* The time passed from host xfer to Tx-complete.*/
__le32 fw_handling_time;
/* Total media delay
(from 1st EDCA AIFS counter until TX Complete). */
__le32 medium_delay;
/* LS-byte of last TKIP seq-num (saved per AC for recovery). */
u8 lsb_security_sequence_number;
/* Retry count - number of transmissions without successful ACK.*/
u8 ack_failures;
/* The rate that succeeded getting ACK
(Valid only if status=SUCCESS). */
u8 rate_class_index;
/* for 4-byte alignment. */
u8 spare;
} __attribute__ ((packed));
struct wl1271_tx_hw_res_if {
__le32 tx_result_fw_counter;
__le32 tx_result_host_counter;
struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN];
} __attribute__ ((packed));
static inline int wl1271_tx_get_queue(int queue)
{
/* FIXME: use best effort until WMM is enabled */
return CONF_TX_AC_BE;
switch (queue) {
case 0:
return CONF_TX_AC_VO;
case 1:
return CONF_TX_AC_VI;
case 2:
return CONF_TX_AC_BE;
case 3:
return CONF_TX_AC_BK;
default:
return CONF_TX_AC_BE;
}
}
/* wl1271 tx descriptor needs the tid and we need to convert it from ac */
static inline int wl1271_tx_ac_to_tid(int ac)
{
switch (ac) {
case 0:
return 0;
case 1:
return 2;
case 2:
return 4;
case 3:
return 6;
default:
return 0;
}
}
void wl1271_tx_work(struct work_struct *work);
void wl1271_tx_complete(struct wl1271 *wl, u32 count);
void wl1271_tx_flush(struct wl1271 *wl);
#endif
|
