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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 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | * | |
20 | * File: int.c | |
21 | * | |
22 | * Purpose: Handle USB interrupt endpoint | |
23 | * | |
24 | * Author: Jerry Chen | |
25 | * | |
26 | * Date: Apr. 2, 2004 | |
27 | * | |
28 | * Functions: | |
29 | * | |
30 | * Revision History: | |
31 | * 04-02-2004 Jerry Chen: Initial release | |
32 | * | |
33 | */ | |
34 | ||
92b96797 | 35 | #include "int.h" |
92b96797 | 36 | #include "mac.h" |
92b96797 | 37 | #include "power.h" |
92b96797 | 38 | #include "usbpipe.h" |
92b96797 | 39 | |
71d764ae MP |
40 | static const u8 fallback_rate0[5][5] = { |
41 | {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M}, | |
42 | {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M}, | |
43 | {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M}, | |
44 | {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M}, | |
45 | {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M} | |
46 | }; | |
47 | ||
48 | static const u8 fallback_rate1[5][5] = { | |
49 | {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M}, | |
50 | {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M}, | |
51 | {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M}, | |
52 | {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M}, | |
53 | {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M} | |
54 | }; | |
55 | ||
62001939 | 56 | void vnt_int_start_interrupt(struct vnt_private *priv) |
92b96797 | 57 | { |
0b596b2a | 58 | unsigned long flags; |
526fed3e | 59 | int status; |
92b96797 | 60 | |
50730604 | 61 | dev_dbg(&priv->usb->dev, "---->Interrupt Polling Thread\n"); |
92b96797 | 62 | |
526fed3e | 63 | spin_lock_irqsave(&priv->lock, flags); |
749627f2 | 64 | |
b0bc5724 | 65 | status = vnt_start_interrupt_urb(priv); |
749627f2 | 66 | |
526fed3e | 67 | spin_unlock_irqrestore(&priv->lock, flags); |
ff8041bb | 68 | } |
92b96797 | 69 | |
71d764ae MP |
70 | static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr) |
71 | { | |
72 | struct vnt_usb_send_context *context; | |
73 | struct ieee80211_tx_info *info; | |
74 | struct ieee80211_rate *rate; | |
75 | u8 tx_retry = (tsr & 0xf0) >> 4; | |
76 | s8 idx; | |
77 | ||
03b7e354 | 78 | if (pkt_no >= priv->num_tx_context) |
71d764ae MP |
79 | return -EINVAL; |
80 | ||
f7e4a8f4 | 81 | context = priv->tx_context[pkt_no]; |
71d764ae MP |
82 | |
83 | if (!context->skb) | |
84 | return -EINVAL; | |
85 | ||
86 | info = IEEE80211_SKB_CB(context->skb); | |
87 | idx = info->control.rates[0].idx; | |
88 | ||
89 | if (context->fb_option && !(tsr & (TSR_TMO | TSR_RETRYTMO))) { | |
90 | u8 tx_rate; | |
91 | u8 retry = tx_retry; | |
92 | ||
93 | rate = ieee80211_get_tx_rate(priv->hw, info); | |
94 | tx_rate = rate->hw_value - RATE_18M; | |
95 | ||
96 | if (retry > 4) | |
97 | retry = 4; | |
98 | ||
99 | if (context->fb_option == AUTO_FB_0) | |
100 | tx_rate = fallback_rate0[tx_rate][retry]; | |
101 | else if (context->fb_option == AUTO_FB_1) | |
102 | tx_rate = fallback_rate1[tx_rate][retry]; | |
103 | ||
104 | if (info->band == IEEE80211_BAND_5GHZ) | |
105 | idx = tx_rate - RATE_6M; | |
106 | else | |
107 | idx = tx_rate; | |
108 | } | |
109 | ||
110 | ieee80211_tx_info_clear_status(info); | |
111 | ||
112 | info->status.rates[0].count = tx_retry; | |
113 | ||
114 | if (!(tsr & (TSR_TMO | TSR_RETRYTMO))) { | |
115 | info->status.rates[0].idx = idx; | |
116 | info->flags |= IEEE80211_TX_STAT_ACK; | |
117 | } | |
118 | ||
119 | ieee80211_tx_status_irqsafe(priv->hw, context->skb); | |
120 | ||
121 | context->in_use = false; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
e360d2b8 | 126 | void vnt_int_process_data(struct vnt_private *priv) |
92b96797 | 127 | { |
210098a5 | 128 | struct vnt_interrupt_data *int_data; |
1786384e | 129 | struct ieee80211_low_level_stats *low_stats = &priv->low_stats; |
ff8041bb | 130 | |
50730604 | 131 | dev_dbg(&priv->usb->dev, "---->s_nsInterruptProcessData\n"); |
ff8041bb | 132 | |
f764e00d | 133 | int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf; |
210098a5 | 134 | |
71d764ae MP |
135 | if (int_data->tsr0 & TSR_VALID) |
136 | vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0); | |
210098a5 | 137 | |
71d764ae MP |
138 | if (int_data->tsr1 & TSR_VALID) |
139 | vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1); | |
210098a5 | 140 | |
71d764ae MP |
141 | if (int_data->tsr2 & TSR_VALID) |
142 | vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2); | |
210098a5 | 143 | |
71d764ae MP |
144 | if (int_data->tsr3 & TSR_VALID) |
145 | vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3); | |
210098a5 MP |
146 | |
147 | if (int_data->isr0 != 0) { | |
c2246420 MP |
148 | if (int_data->isr0 & ISR_BNTX && |
149 | priv->op_mode == NL80211_IFTYPE_AP) | |
57981a65 | 150 | vnt_schedule_command(priv, WLAN_CMD_BECON_SEND); |
210098a5 MP |
151 | |
152 | if (int_data->isr0 & ISR_TBTT) { | |
c2246420 | 153 | if (priv->hw->conf.flags & IEEE80211_CONF_PS) |
57981a65 MP |
154 | vnt_schedule_command(priv, |
155 | WLAN_CMD_TBTT_WAKEUP); | |
ff8041bb | 156 | } |
113f0b91 | 157 | priv->current_tsf = le64_to_cpu(int_data->tsf); |
1786384e MP |
158 | |
159 | low_stats->dot11RTSSuccessCount += int_data->rts_success; | |
160 | low_stats->dot11RTSFailureCount += int_data->rts_fail; | |
161 | low_stats->dot11ACKFailureCount += int_data->ack_fail; | |
162 | low_stats->dot11FCSErrorCount += int_data->fcs_err; | |
ff8041bb | 163 | } |
210098a5 | 164 | |
f764e00d | 165 | priv->int_buf.in_use = false; |
92b96797 | 166 | } |