dd41dab5d5
Now that the SPDX tag is in all vt6656 files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Forest Bond <forest@alittletooquiet.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* File: int.c
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*
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* Purpose: Handle USB interrupt endpoint
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*
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* Author: Jerry Chen
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*
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* Date: Apr. 2, 2004
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*
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* Functions:
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*
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* Revision History:
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* 04-02-2004 Jerry Chen: Initial release
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*
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*/
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#include "int.h"
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#include "mac.h"
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#include "power.h"
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#include "usbpipe.h"
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static const u8 fallback_rate0[5][5] = {
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{RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
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{RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
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{RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
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{RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
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{RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
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};
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static const u8 fallback_rate1[5][5] = {
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{RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
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{RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
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{RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
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{RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
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{RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
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};
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void vnt_int_start_interrupt(struct vnt_private *priv)
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{
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unsigned long flags;
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int status;
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dev_dbg(&priv->usb->dev, "---->Interrupt Polling Thread\n");
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spin_lock_irqsave(&priv->lock, flags);
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status = vnt_start_interrupt_urb(priv);
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr)
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{
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struct vnt_usb_send_context *context;
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struct ieee80211_tx_info *info;
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struct ieee80211_rate *rate;
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u8 tx_retry = (tsr & 0xf0) >> 4;
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s8 idx;
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if (pkt_no >= priv->num_tx_context)
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return -EINVAL;
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context = priv->tx_context[pkt_no];
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if (!context->skb)
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return -EINVAL;
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info = IEEE80211_SKB_CB(context->skb);
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idx = info->control.rates[0].idx;
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if (context->fb_option && !(tsr & (TSR_TMO | TSR_RETRYTMO))) {
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u8 tx_rate;
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u8 retry = tx_retry;
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rate = ieee80211_get_tx_rate(priv->hw, info);
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tx_rate = rate->hw_value - RATE_18M;
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if (retry > 4)
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retry = 4;
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if (context->fb_option == AUTO_FB_0)
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tx_rate = fallback_rate0[tx_rate][retry];
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else if (context->fb_option == AUTO_FB_1)
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tx_rate = fallback_rate1[tx_rate][retry];
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if (info->band == NL80211_BAND_5GHZ)
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idx = tx_rate - RATE_6M;
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else
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idx = tx_rate;
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}
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ieee80211_tx_info_clear_status(info);
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info->status.rates[0].count = tx_retry;
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if (!(tsr & (TSR_TMO | TSR_RETRYTMO))) {
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info->status.rates[0].idx = idx;
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info->flags |= IEEE80211_TX_STAT_ACK;
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}
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ieee80211_tx_status_irqsafe(priv->hw, context->skb);
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context->in_use = false;
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return 0;
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}
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void vnt_int_process_data(struct vnt_private *priv)
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{
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struct vnt_interrupt_data *int_data;
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struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
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dev_dbg(&priv->usb->dev, "---->s_nsInterruptProcessData\n");
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int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf;
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if (int_data->tsr0 & TSR_VALID)
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vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0);
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if (int_data->tsr1 & TSR_VALID)
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vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1);
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if (int_data->tsr2 & TSR_VALID)
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vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2);
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if (int_data->tsr3 & TSR_VALID)
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vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3);
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if (int_data->isr0 != 0) {
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if (int_data->isr0 & ISR_BNTX &&
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priv->op_mode == NL80211_IFTYPE_AP)
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vnt_schedule_command(priv, WLAN_CMD_BECON_SEND);
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if (int_data->isr0 & ISR_TBTT &&
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priv->hw->conf.flags & IEEE80211_CONF_PS) {
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if (!priv->wake_up_count)
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priv->wake_up_count =
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priv->hw->conf.listen_interval;
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--priv->wake_up_count;
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/* Turn on wake up to listen next beacon */
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if (priv->wake_up_count == 1)
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vnt_schedule_command(priv,
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WLAN_CMD_TBTT_WAKEUP);
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}
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priv->current_tsf = le64_to_cpu(int_data->tsf);
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low_stats->dot11RTSSuccessCount += int_data->rts_success;
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low_stats->dot11RTSFailureCount += int_data->rts_fail;
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low_stats->dot11ACKFailureCount += int_data->ack_fail;
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low_stats->dot11FCSErrorCount += int_data->fcs_err;
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}
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priv->int_buf.in_use = false;
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}
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