1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 * Purpose: Handles the management command interface functions
7 *
8 * Author: Lyndon Chen
9 *
10 * Date: May 8, 2003
11 *
12 * Functions:
13 * vnt_cmd_complete - Command Complete function
14 * vnt_schedule_command - Push Command and wait Command Scheduler to do
15 * vnt_cmd_timer_wait- Call back timer
16 *
17 * Revision History:
18 *
19 */
20
21 #include "device.h"
22 #include "mac.h"
23 #include "wcmd.h"
24 #include "power.h"
25 #include "usbpipe.h"
26 #include "rxtx.h"
27 #include "rf.h"
28
vnt_cmd_timer_wait(struct vnt_private * priv,unsigned long msecs)29 static void vnt_cmd_timer_wait(struct vnt_private *priv, unsigned long msecs)
30 {
31 schedule_delayed_work(&priv->run_command_work, msecs_to_jiffies(msecs));
32 }
33
vnt_cmd_complete(struct vnt_private * priv)34 static int vnt_cmd_complete(struct vnt_private *priv)
35 {
36 priv->command_state = WLAN_CMD_IDLE;
37 if (priv->free_cmd_queue == CMD_Q_SIZE) {
38 /* Command Queue Empty */
39 priv->cmd_running = false;
40 return true;
41 }
42
43 priv->command = priv->cmd_queue[priv->cmd_dequeue_idx];
44
45 ADD_ONE_WITH_WRAP_AROUND(priv->cmd_dequeue_idx, CMD_Q_SIZE);
46 priv->free_cmd_queue++;
47 priv->cmd_running = true;
48
49 switch (priv->command) {
50 case WLAN_CMD_INIT_MAC80211:
51 priv->command_state = WLAN_CMD_INIT_MAC80211_START;
52 break;
53
54 case WLAN_CMD_TBTT_WAKEUP:
55 priv->command_state = WLAN_CMD_TBTT_WAKEUP_START;
56 break;
57
58 case WLAN_CMD_BECON_SEND:
59 priv->command_state = WLAN_CMD_BECON_SEND_START;
60 break;
61
62 case WLAN_CMD_SETPOWER:
63 priv->command_state = WLAN_CMD_SETPOWER_START;
64 break;
65
66 case WLAN_CMD_CHANGE_ANTENNA:
67 priv->command_state = WLAN_CMD_CHANGE_ANTENNA_START;
68 break;
69
70 default:
71 break;
72 }
73
74 vnt_cmd_timer_wait(priv, 0);
75
76 return true;
77 }
78
vnt_run_command(struct work_struct * work)79 void vnt_run_command(struct work_struct *work)
80 {
81 struct vnt_private *priv =
82 container_of(work, struct vnt_private, run_command_work.work);
83
84 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
85 return;
86
87 if (!priv->cmd_running)
88 return;
89
90 switch (priv->command_state) {
91 case WLAN_CMD_INIT_MAC80211_START:
92 if (priv->mac_hw)
93 break;
94
95 dev_info(&priv->usb->dev, "Starting mac80211\n");
96
97 if (vnt_init(priv)) {
98 /* If fail all ends TODO retry */
99 dev_err(&priv->usb->dev, "failed to start\n");
100 usb_set_intfdata(priv->intf, NULL);
101 ieee80211_free_hw(priv->hw);
102 return;
103 }
104
105 break;
106
107 case WLAN_CMD_TBTT_WAKEUP_START:
108 vnt_next_tbtt_wakeup(priv);
109 break;
110
111 case WLAN_CMD_BECON_SEND_START:
112 if (!priv->vif)
113 break;
114
115 vnt_beacon_make(priv, priv->vif);
116
117 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
118
119 break;
120
121 case WLAN_CMD_SETPOWER_START:
122
123 vnt_rf_setpower(priv, priv->hw->conf.chandef.chan);
124
125 break;
126
127 case WLAN_CMD_CHANGE_ANTENNA_START:
128 dev_dbg(&priv->usb->dev, "Change from Antenna%d to",
129 priv->rx_antenna_sel);
130
131 if (priv->rx_antenna_sel == 0) {
132 priv->rx_antenna_sel = 1;
133 if (priv->tx_rx_ant_inv)
134 vnt_set_antenna_mode(priv, ANT_RXA);
135 else
136 vnt_set_antenna_mode(priv, ANT_RXB);
137 } else {
138 priv->rx_antenna_sel = 0;
139 if (priv->tx_rx_ant_inv)
140 vnt_set_antenna_mode(priv, ANT_RXB);
141 else
142 vnt_set_antenna_mode(priv, ANT_RXA);
143 }
144 break;
145
146 default:
147 break;
148 }
149
150 vnt_cmd_complete(priv);
151 }
152
vnt_schedule_command(struct vnt_private * priv,enum vnt_cmd command)153 int vnt_schedule_command(struct vnt_private *priv, enum vnt_cmd command)
154 {
155 if (priv->free_cmd_queue == 0)
156 return false;
157
158 priv->cmd_queue[priv->cmd_enqueue_idx] = command;
159
160 ADD_ONE_WITH_WRAP_AROUND(priv->cmd_enqueue_idx, CMD_Q_SIZE);
161 priv->free_cmd_queue--;
162
163 if (!priv->cmd_running)
164 vnt_cmd_complete(priv);
165
166 return true;
167 }
168
vnt_reset_command_timer(struct vnt_private * priv)169 void vnt_reset_command_timer(struct vnt_private *priv)
170 {
171 priv->free_cmd_queue = CMD_Q_SIZE;
172 priv->cmd_dequeue_idx = 0;
173 priv->cmd_enqueue_idx = 0;
174 priv->command_state = WLAN_CMD_IDLE;
175 priv->cmd_running = false;
176 }
177