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92b96797 FB |
1 | /* |
2 | * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
92b96797 FB |
15 | * |
16 | * File: int.c | |
17 | * | |
18 | * Purpose: Handle USB interrupt endpoint | |
19 | * | |
20 | * Author: Jerry Chen | |
21 | * | |
22 | * Date: Apr. 2, 2004 | |
23 | * | |
24 | * Functions: | |
25 | * | |
26 | * Revision History: | |
27 | * 04-02-2004 Jerry Chen: Initial release | |
28 | * | |
29 | */ | |
30 | ||
92b96797 | 31 | #include "int.h" |
92b96797 | 32 | #include "mac.h" |
92b96797 | 33 | #include "power.h" |
92b96797 | 34 | #include "usbpipe.h" |
92b96797 | 35 | |
71d764ae MP |
36 | static const u8 fallback_rate0[5][5] = { |
37 | {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M}, | |
38 | {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M}, | |
39 | {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M}, | |
40 | {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M}, | |
41 | {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M} | |
42 | }; | |
43 | ||
44 | static const u8 fallback_rate1[5][5] = { | |
45 | {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M}, | |
46 | {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M}, | |
47 | {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M}, | |
48 | {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M}, | |
49 | {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M} | |
50 | }; | |
51 | ||
62001939 | 52 | void vnt_int_start_interrupt(struct vnt_private *priv) |
92b96797 | 53 | { |
0b596b2a | 54 | unsigned long flags; |
526fed3e | 55 | int status; |
92b96797 | 56 | |
50730604 | 57 | dev_dbg(&priv->usb->dev, "---->Interrupt Polling Thread\n"); |
92b96797 | 58 | |
526fed3e | 59 | spin_lock_irqsave(&priv->lock, flags); |
749627f2 | 60 | |
b0bc5724 | 61 | status = vnt_start_interrupt_urb(priv); |
749627f2 | 62 | |
526fed3e | 63 | spin_unlock_irqrestore(&priv->lock, flags); |
ff8041bb | 64 | } |
92b96797 | 65 | |
71d764ae MP |
66 | static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr) |
67 | { | |
68 | struct vnt_usb_send_context *context; | |
69 | struct ieee80211_tx_info *info; | |
70 | struct ieee80211_rate *rate; | |
71 | u8 tx_retry = (tsr & 0xf0) >> 4; | |
72 | s8 idx; | |
73 | ||
03b7e354 | 74 | if (pkt_no >= priv->num_tx_context) |
71d764ae MP |
75 | return -EINVAL; |
76 | ||
f7e4a8f4 | 77 | context = priv->tx_context[pkt_no]; |
71d764ae MP |
78 | |
79 | if (!context->skb) | |
80 | return -EINVAL; | |
81 | ||
82 | info = IEEE80211_SKB_CB(context->skb); | |
83 | idx = info->control.rates[0].idx; | |
84 | ||
85 | if (context->fb_option && !(tsr & (TSR_TMO | TSR_RETRYTMO))) { | |
86 | u8 tx_rate; | |
87 | u8 retry = tx_retry; | |
88 | ||
89 | rate = ieee80211_get_tx_rate(priv->hw, info); | |
90 | tx_rate = rate->hw_value - RATE_18M; | |
91 | ||
92 | if (retry > 4) | |
93 | retry = 4; | |
94 | ||
95 | if (context->fb_option == AUTO_FB_0) | |
96 | tx_rate = fallback_rate0[tx_rate][retry]; | |
97 | else if (context->fb_option == AUTO_FB_1) | |
98 | tx_rate = fallback_rate1[tx_rate][retry]; | |
99 | ||
57fbcce3 | 100 | if (info->band == NL80211_BAND_5GHZ) |
71d764ae MP |
101 | idx = tx_rate - RATE_6M; |
102 | else | |
103 | idx = tx_rate; | |
104 | } | |
105 | ||
106 | ieee80211_tx_info_clear_status(info); | |
107 | ||
108 | info->status.rates[0].count = tx_retry; | |
109 | ||
110 | if (!(tsr & (TSR_TMO | TSR_RETRYTMO))) { | |
111 | info->status.rates[0].idx = idx; | |
112 | info->flags |= IEEE80211_TX_STAT_ACK; | |
113 | } | |
114 | ||
115 | ieee80211_tx_status_irqsafe(priv->hw, context->skb); | |
116 | ||
117 | context->in_use = false; | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
e360d2b8 | 122 | void vnt_int_process_data(struct vnt_private *priv) |
92b96797 | 123 | { |
210098a5 | 124 | struct vnt_interrupt_data *int_data; |
1786384e | 125 | struct ieee80211_low_level_stats *low_stats = &priv->low_stats; |
ff8041bb | 126 | |
50730604 | 127 | dev_dbg(&priv->usb->dev, "---->s_nsInterruptProcessData\n"); |
ff8041bb | 128 | |
f764e00d | 129 | int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf; |
210098a5 | 130 | |
71d764ae MP |
131 | if (int_data->tsr0 & TSR_VALID) |
132 | vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0); | |
210098a5 | 133 | |
71d764ae MP |
134 | if (int_data->tsr1 & TSR_VALID) |
135 | vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1); | |
210098a5 | 136 | |
71d764ae MP |
137 | if (int_data->tsr2 & TSR_VALID) |
138 | vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2); | |
210098a5 | 139 | |
71d764ae MP |
140 | if (int_data->tsr3 & TSR_VALID) |
141 | vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3); | |
210098a5 MP |
142 | |
143 | if (int_data->isr0 != 0) { | |
c2246420 MP |
144 | if (int_data->isr0 & ISR_BNTX && |
145 | priv->op_mode == NL80211_IFTYPE_AP) | |
57981a65 | 146 | vnt_schedule_command(priv, WLAN_CMD_BECON_SEND); |
210098a5 | 147 | |
43c93d9b MP |
148 | if (int_data->isr0 & ISR_TBTT && |
149 | priv->hw->conf.flags & IEEE80211_CONF_PS) { | |
150 | if (!priv->wake_up_count) | |
151 | priv->wake_up_count = | |
152 | priv->hw->conf.listen_interval; | |
153 | ||
154 | --priv->wake_up_count; | |
155 | ||
156 | /* Turn on wake up to listen next beacon */ | |
157 | if (priv->wake_up_count == 1) | |
57981a65 | 158 | vnt_schedule_command(priv, |
43c93d9b | 159 | WLAN_CMD_TBTT_WAKEUP); |
ff8041bb | 160 | } |
113f0b91 | 161 | priv->current_tsf = le64_to_cpu(int_data->tsf); |
1786384e MP |
162 | |
163 | low_stats->dot11RTSSuccessCount += int_data->rts_success; | |
164 | low_stats->dot11RTSFailureCount += int_data->rts_fail; | |
165 | low_stats->dot11ACKFailureCount += int_data->ack_fail; | |
166 | low_stats->dot11FCSErrorCount += int_data->fcs_err; | |
ff8041bb | 167 | } |
210098a5 | 168 | |
f764e00d | 169 | priv->int_buf.in_use = false; |
92b96797 | 170 | } |