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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | /* * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. * * * File: int.c * * Purpose: Handle USB interrupt endpoint * * Author: Jerry Chen * * Date: Apr. 2, 2004 * * Functions: * * Revision History: * 04-02-2004 Jerry Chen: Initial release * */ #include "int.h" #include "mac.h" #include "power.h" #include "usbpipe.h" static const u8 fallback_rate0[5][5] = { {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M}, {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M}, {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M}, {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M}, {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M} }; static const u8 fallback_rate1[5][5] = { {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M}, {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M}, {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M}, {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M}, {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M} }; void vnt_int_start_interrupt(struct vnt_private *priv) { unsigned long flags; int status; dev_dbg(&priv->usb->dev, "---->Interrupt Polling Thread\n"); spin_lock_irqsave(&priv->lock, flags); status = vnt_start_interrupt_urb(priv); spin_unlock_irqrestore(&priv->lock, flags); } static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr) { struct vnt_usb_send_context *context; struct ieee80211_tx_info *info; struct ieee80211_rate *rate; u8 tx_retry = (tsr & 0xf0) >> 4; s8 idx; if (pkt_no >= priv->num_tx_context) return -EINVAL; context = priv->tx_context[pkt_no]; if (!context->skb) return -EINVAL; info = IEEE80211_SKB_CB(context->skb); idx = info->control.rates[0].idx; if (context->fb_option && !(tsr & (TSR_TMO | TSR_RETRYTMO))) { u8 tx_rate; u8 retry = tx_retry; rate = ieee80211_get_tx_rate(priv->hw, info); tx_rate = rate->hw_value - RATE_18M; if (retry > 4) retry = 4; if (context->fb_option == AUTO_FB_0) tx_rate = fallback_rate0[tx_rate][retry]; else if (context->fb_option == AUTO_FB_1) tx_rate = fallback_rate1[tx_rate][retry]; if (info->band == IEEE80211_BAND_5GHZ) idx = tx_rate - RATE_6M; else idx = tx_rate; } ieee80211_tx_info_clear_status(info); info->status.rates[0].count = tx_retry; if (!(tsr & (TSR_TMO | TSR_RETRYTMO))) { info->status.rates[0].idx = idx; info->flags |= IEEE80211_TX_STAT_ACK; } ieee80211_tx_status_irqsafe(priv->hw, context->skb); context->in_use = false; return 0; } void vnt_int_process_data(struct vnt_private *priv) { struct vnt_interrupt_data *int_data; struct ieee80211_low_level_stats *low_stats = &priv->low_stats; dev_dbg(&priv->usb->dev, "---->s_nsInterruptProcessData\n"); int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf; if (int_data->tsr0 & TSR_VALID) vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0); if (int_data->tsr1 & TSR_VALID) vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1); if (int_data->tsr2 & TSR_VALID) vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2); if (int_data->tsr3 & TSR_VALID) vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3); if (int_data->isr0 != 0) { if (int_data->isr0 & ISR_BNTX && priv->op_mode == NL80211_IFTYPE_AP) vnt_schedule_command(priv, WLAN_CMD_BECON_SEND); if (int_data->isr0 & ISR_TBTT && priv->hw->conf.flags & IEEE80211_CONF_PS) { if (!priv->wake_up_count) priv->wake_up_count = priv->hw->conf.listen_interval; --priv->wake_up_count; /* Turn on wake up to listen next beacon */ if (priv->wake_up_count == 1) vnt_schedule_command(priv, WLAN_CMD_TBTT_WAKEUP); } priv->current_tsf = le64_to_cpu(int_data->tsf); low_stats->dot11RTSSuccessCount += int_data->rts_success; low_stats->dot11RTSFailureCount += int_data->rts_fail; low_stats->dot11ACKFailureCount += int_data->ack_fail; low_stats->dot11FCSErrorCount += int_data->fcs_err; } priv->int_buf.in_use = false; } |