Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 2 | Copyright (C) 2010 Willow Garage <http://www.willowgarage.com> |
| 3 | Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 4 | <http://rt2x00.serialmonkey.com> |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
Jeff Kirsher | a05b8c5 | 2013-12-06 03:32:11 -0800 | [diff] [blame] | 17 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /* |
| 21 | Module: rt2x00lib |
| 22 | Abstract: rt2x00 generic device routines. |
| 23 | */ |
| 24 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 25 | #include <linux/kernel.h> |
| 26 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 28 | #include <linux/log2.h> |
Mathias Kresin | 9766cb7 | 2016-08-26 09:16:53 +0200 | [diff] [blame] | 29 | #include <linux/of.h> |
| 30 | #include <linux/of_net.h> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 31 | |
| 32 | #include "rt2x00.h" |
| 33 | #include "rt2x00lib.h" |
| 34 | |
| 35 | /* |
Helmut Schaa | 1832552 | 2011-09-08 14:34:22 +0200 | [diff] [blame] | 36 | * Utility functions. |
| 37 | */ |
| 38 | u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev, |
| 39 | struct ieee80211_vif *vif) |
| 40 | { |
| 41 | /* |
| 42 | * When in STA mode, bssidx is always 0 otherwise local_address[5] |
| 43 | * contains the bss number, see BSS_ID_MASK comments for details. |
| 44 | */ |
| 45 | if (rt2x00dev->intf_sta_count) |
| 46 | return 0; |
| 47 | return vif->addr[5] & (rt2x00dev->ops->max_ap_intf - 1); |
| 48 | } |
| 49 | EXPORT_SYMBOL_GPL(rt2x00lib_get_bssidx); |
| 50 | |
| 51 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 52 | * Radio control handlers. |
| 53 | */ |
| 54 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) |
| 55 | { |
| 56 | int status; |
| 57 | |
| 58 | /* |
| 59 | * Don't enable the radio twice. |
| 60 | * And check if the hardware button has been disabled. |
| 61 | */ |
Ivo van Doorn | 4b9631a | 2009-07-11 18:00:19 +0200 | [diff] [blame] | 62 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 63 | return 0; |
| 64 | |
| 65 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 66 | * Initialize all data queues. |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 67 | */ |
Ivo van Doorn | 798b7ad | 2008-11-08 15:25:33 +0100 | [diff] [blame] | 68 | rt2x00queue_init_queues(rt2x00dev); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 69 | |
| 70 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 71 | * Enable radio. |
| 72 | */ |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 73 | status = |
| 74 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 75 | if (status) |
| 76 | return status; |
| 77 | |
Ivo van Doorn | 2b08da3 | 2008-06-03 18:58:56 +0200 | [diff] [blame] | 78 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
| 79 | |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 80 | rt2x00leds_led_radio(rt2x00dev, true); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 81 | rt2x00led_led_activity(rt2x00dev, true); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 82 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 83 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 84 | |
| 85 | /* |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 86 | * Enable queues. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 87 | */ |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 88 | rt2x00queue_start_queues(rt2x00dev); |
Ivo van Doorn | ea175ee | 2010-11-06 15:48:43 +0100 | [diff] [blame] | 89 | rt2x00link_start_tuner(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 90 | |
| 91 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 92 | * Start watchdog monitoring. |
| 93 | */ |
| 94 | rt2x00link_start_watchdog(rt2x00dev); |
| 95 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 100 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 101 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 102 | return; |
| 103 | |
| 104 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 105 | * Stop watchdog monitoring. |
| 106 | */ |
| 107 | rt2x00link_stop_watchdog(rt2x00dev); |
| 108 | |
| 109 | /* |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 110 | * Stop all queues |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 111 | */ |
Ivo van Doorn | ea175ee | 2010-11-06 15:48:43 +0100 | [diff] [blame] | 112 | rt2x00link_stop_tuner(rt2x00dev); |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 113 | rt2x00queue_stop_queues(rt2x00dev); |
Ivo van Doorn | 5be6560 | 2010-12-13 12:35:40 +0100 | [diff] [blame] | 114 | rt2x00queue_flush_queues(rt2x00dev, true); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 115 | |
| 116 | /* |
| 117 | * Disable radio. |
| 118 | */ |
| 119 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); |
Ivo van Doorn | 2b08da3 | 2008-06-03 18:58:56 +0200 | [diff] [blame] | 120 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 121 | rt2x00led_led_activity(rt2x00dev, false); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 122 | rt2x00leds_led_radio(rt2x00dev, false); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 125 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
| 126 | struct ieee80211_vif *vif) |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 127 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 128 | struct rt2x00_dev *rt2x00dev = data; |
| 129 | struct rt2x00_intf *intf = vif_to_intf(vif); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 130 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 131 | /* |
| 132 | * It is possible the radio was disabled while the work had been |
| 133 | * scheduled. If that happens we should return here immediately, |
| 134 | * note that in the spinlock protected area above the delayed_flags |
| 135 | * have been cleared correctly. |
| 136 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 137 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 138 | return; |
| 139 | |
Stanislaw Gruszka | 283dafa | 2014-06-05 13:52:23 +0200 | [diff] [blame] | 140 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) { |
| 141 | mutex_lock(&intf->beacon_skb_mutex); |
Helmut Schaa | 69cf36a | 2011-01-30 13:16:03 +0100 | [diff] [blame] | 142 | rt2x00queue_update_beacon(rt2x00dev, vif); |
Stanislaw Gruszka | 283dafa | 2014-06-05 13:52:23 +0200 | [diff] [blame] | 143 | mutex_unlock(&intf->beacon_skb_mutex); |
| 144 | } |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
| 148 | { |
| 149 | struct rt2x00_dev *rt2x00dev = |
| 150 | container_of(work, struct rt2x00_dev, intf_work); |
| 151 | |
| 152 | /* |
| 153 | * Iterate over each interface and perform the |
| 154 | * requested configurations. |
| 155 | */ |
| 156 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 157 | IEEE80211_IFACE_ITER_RESUME_ALL, |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 158 | rt2x00lib_intf_scheduled_iter, |
| 159 | rt2x00dev); |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 160 | } |
| 161 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 162 | static void rt2x00lib_autowakeup(struct work_struct *work) |
| 163 | { |
| 164 | struct rt2x00_dev *rt2x00dev = |
| 165 | container_of(work, struct rt2x00_dev, autowakeup_work.work); |
| 166 | |
Stanislaw Gruszka | 3bb42a6 | 2011-06-04 16:48:54 +0200 | [diff] [blame] | 167 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 168 | return; |
| 169 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 170 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 171 | rt2x00_err(rt2x00dev, "Device failed to wakeup\n"); |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 172 | clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags); |
| 173 | } |
| 174 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 175 | /* |
| 176 | * Interrupt context handlers. |
| 177 | */ |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 178 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
| 179 | struct ieee80211_vif *vif) |
| 180 | { |
Felix Fietkau | b4089d6 | 2013-11-14 21:33:15 +0100 | [diff] [blame] | 181 | struct ieee80211_tx_control control = {}; |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 182 | struct rt2x00_dev *rt2x00dev = data; |
| 183 | struct sk_buff *skb; |
| 184 | |
| 185 | /* |
| 186 | * Only AP mode interfaces do broad- and multicast buffering |
| 187 | */ |
| 188 | if (vif->type != NL80211_IFTYPE_AP) |
| 189 | return; |
| 190 | |
| 191 | /* |
| 192 | * Send out buffered broad- and multicast frames |
| 193 | */ |
| 194 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 195 | while (skb) { |
Felix Fietkau | b4089d6 | 2013-11-14 21:33:15 +0100 | [diff] [blame] | 196 | rt2x00mac_tx(rt2x00dev->hw, &control, skb); |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 197 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 198 | } |
| 199 | } |
| 200 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 201 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
| 202 | struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 203 | { |
Helmut Schaa | 4dee32f | 2010-07-11 12:27:26 +0200 | [diff] [blame] | 204 | struct rt2x00_dev *rt2x00dev = data; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 205 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 206 | if (vif->type != NL80211_IFTYPE_AP && |
Andrey Yurovsky | a07dbea | 2008-12-20 10:55:34 +0100 | [diff] [blame] | 207 | vif->type != NL80211_IFTYPE_ADHOC && |
Ivo van Doorn | ce292a6 | 2008-12-20 10:57:02 +0100 | [diff] [blame] | 208 | vif->type != NL80211_IFTYPE_MESH_POINT && |
| 209 | vif->type != NL80211_IFTYPE_WDS) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 210 | return; |
| 211 | |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 212 | /* |
| 213 | * Update the beacon without locking. This is safe on PCI devices |
| 214 | * as they only update the beacon periodically here. This should |
| 215 | * never be called for USB devices. |
| 216 | */ |
| 217 | WARN_ON(rt2x00_is_usb(rt2x00dev)); |
Stanislaw Gruszka | 283dafa | 2014-06-05 13:52:23 +0200 | [diff] [blame] | 218 | rt2x00queue_update_beacon(rt2x00dev, vif); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) |
| 222 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 223 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 224 | return; |
| 225 | |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 226 | /* send buffered bc/mc frames out for every bssid */ |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 227 | ieee80211_iterate_active_interfaces_atomic( |
| 228 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, |
| 229 | rt2x00lib_bc_buffer_iter, rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 230 | /* |
| 231 | * Devices with pre tbtt interrupt don't need to update the beacon |
| 232 | * here as they will fetch the next beacon directly prior to |
| 233 | * transmission. |
| 234 | */ |
Gabor Juhos | 7b8a00d | 2013-10-11 13:18:41 +0200 | [diff] [blame] | 235 | if (rt2x00_has_cap_pre_tbtt_interrupt(rt2x00dev)) |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 236 | return; |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 237 | |
| 238 | /* fetch next beacon */ |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 239 | ieee80211_iterate_active_interfaces_atomic( |
| 240 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, |
| 241 | rt2x00lib_beaconupdate_iter, rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 242 | } |
| 243 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); |
| 244 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 245 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
| 246 | { |
| 247 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 248 | return; |
| 249 | |
| 250 | /* fetch next beacon */ |
Johannes Berg | 8b2c982 | 2012-11-06 20:23:30 +0100 | [diff] [blame] | 251 | ieee80211_iterate_active_interfaces_atomic( |
| 252 | rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL, |
| 253 | rt2x00lib_beaconupdate_iter, rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 254 | } |
| 255 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); |
| 256 | |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 257 | void rt2x00lib_dmastart(struct queue_entry *entry) |
| 258 | { |
| 259 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 260 | rt2x00queue_index_inc(entry, Q_INDEX); |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 261 | } |
| 262 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); |
| 263 | |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 264 | void rt2x00lib_dmadone(struct queue_entry *entry) |
| 265 | { |
Ivo van Doorn | dba5dc1 | 2010-12-13 12:36:18 +0100 | [diff] [blame] | 266 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
Ivo van Doorn | a13c8f3 | 2010-10-11 15:39:48 +0200 | [diff] [blame] | 267 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 268 | rt2x00queue_index_inc(entry, Q_INDEX_DMA_DONE); |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 269 | } |
| 270 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); |
| 271 | |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 272 | static inline int rt2x00lib_txdone_bar_status(struct queue_entry *entry) |
| 273 | { |
| 274 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
| 275 | struct ieee80211_bar *bar = (void *) entry->skb->data; |
| 276 | struct rt2x00_bar_list_entry *bar_entry; |
| 277 | int ret; |
| 278 | |
| 279 | if (likely(!ieee80211_is_back_req(bar->frame_control))) |
| 280 | return 0; |
| 281 | |
| 282 | /* |
| 283 | * Unlike all other frames, the status report for BARs does |
| 284 | * not directly come from the hardware as it is incapable of |
| 285 | * matching a BA to a previously send BAR. The hardware will |
| 286 | * report all BARs as if they weren't acked at all. |
| 287 | * |
| 288 | * Instead the RX-path will scan for incoming BAs and set the |
| 289 | * block_acked flag if it sees one that was likely caused by |
| 290 | * a BAR from us. |
| 291 | * |
| 292 | * Remove remaining BARs here and return their status for |
| 293 | * TX done processing. |
| 294 | */ |
| 295 | ret = 0; |
| 296 | rcu_read_lock(); |
| 297 | list_for_each_entry_rcu(bar_entry, &rt2x00dev->bar_list, list) { |
| 298 | if (bar_entry->entry != entry) |
| 299 | continue; |
| 300 | |
| 301 | spin_lock_bh(&rt2x00dev->bar_list_lock); |
| 302 | /* Return whether this BAR was blockacked or not */ |
| 303 | ret = bar_entry->block_acked; |
| 304 | /* Remove the BAR from our checklist */ |
| 305 | list_del_rcu(&bar_entry->list); |
| 306 | spin_unlock_bh(&rt2x00dev->bar_list_lock); |
| 307 | kfree_rcu(bar_entry, head); |
| 308 | |
| 309 | break; |
| 310 | } |
| 311 | rcu_read_unlock(); |
| 312 | |
| 313 | return ret; |
| 314 | } |
| 315 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 316 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 317 | struct txdone_entry_desc *txdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 318 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 319 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 320 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 321 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 322 | unsigned int header_length, i; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 323 | u8 rate_idx, rate_flags, retry_rates; |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 324 | u8 skbdesc_flags = skbdesc->flags; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 325 | bool success; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 326 | |
| 327 | /* |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 328 | * Unmap the skb. |
| 329 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 330 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 331 | |
| 332 | /* |
| 333 | * Remove the extra tx headroom from the skb. |
| 334 | */ |
Gabor Juhos | 5616a6e | 2013-06-06 09:36:19 +0200 | [diff] [blame] | 335 | skb_pull(entry->skb, rt2x00dev->extra_tx_headroom); |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 336 | |
| 337 | /* |
| 338 | * Signal that the TX descriptor is no longer in the skb. |
| 339 | */ |
| 340 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; |
| 341 | |
| 342 | /* |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 343 | * Determine the length of 802.11 header. |
| 344 | */ |
| 345 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
| 346 | |
| 347 | /* |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 348 | * Remove L2 padding which was added during |
| 349 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 350 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_L2PAD)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 351 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 352 | |
| 353 | /* |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 354 | * If the IV/EIV data was stripped from the frame before it was |
| 355 | * passed to the hardware, we should now reinsert it again because |
Walter Goldens | 77c2061 | 2010-05-18 04:44:54 -0700 | [diff] [blame] | 356 | * mac80211 will expect the same data to be present it the |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 357 | * frame as it was passed to us. |
| 358 | */ |
Gabor Juhos | 7b8a00d | 2013-10-11 13:18:41 +0200 | [diff] [blame] | 359 | if (rt2x00_has_cap_hw_crypto(rt2x00dev)) |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 360 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 361 | |
| 362 | /* |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 363 | * Send frame to debugfs immediately, after this call is completed |
| 364 | * we are going to overwrite the skb->cb array. |
| 365 | */ |
| 366 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 367 | |
| 368 | /* |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 369 | * Determine if the frame has been successfully transmitted and |
| 370 | * remove BARs from our check list while checking for their |
| 371 | * TX status. |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 372 | */ |
| 373 | success = |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 374 | rt2x00lib_txdone_bar_status(entry) || |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 375 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
Helmut Schaa | fd6dcb8 | 2010-06-14 22:09:09 +0200 | [diff] [blame] | 376 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 377 | |
| 378 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 379 | * Update TX statistics. |
| 380 | */ |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 381 | rt2x00dev->link.qual.tx_success += success; |
| 382 | rt2x00dev->link.qual.tx_failed += !success; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 383 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 384 | rate_idx = skbdesc->tx_rate_idx; |
| 385 | rate_flags = skbdesc->tx_rate_flags; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 386 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
| 387 | (txdesc->retry + 1) : 1; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 388 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 389 | /* |
| 390 | * Initialize TX status |
| 391 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 392 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
| 393 | tx_info->status.ack_signal = 0; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 394 | |
| 395 | /* |
| 396 | * Frame was send with retries, hardware tried |
| 397 | * different rates to send out the frame, at each |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 398 | * retry it lowered the rate 1 step except when the |
| 399 | * lowest rate was used. |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 400 | */ |
| 401 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { |
| 402 | tx_info->status.rates[i].idx = rate_idx - i; |
| 403 | tx_info->status.rates[i].flags = rate_flags; |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 404 | |
| 405 | if (rate_idx - i == 0) { |
| 406 | /* |
| 407 | * The lowest rate (index 0) was used until the |
| 408 | * number of max retries was reached. |
| 409 | */ |
| 410 | tx_info->status.rates[i].count = retry_rates - i; |
| 411 | i++; |
| 412 | break; |
| 413 | } |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 414 | tx_info->status.rates[i].count = 1; |
| 415 | } |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 416 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 417 | tx_info->status.rates[i].idx = -1; /* terminate */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 418 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 419 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 420 | if (success) |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 421 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 422 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 423 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 424 | } |
| 425 | |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 426 | /* |
| 427 | * Every single frame has it's own tx status, hence report |
| 428 | * every frame as ampdu of size 1. |
| 429 | * |
| 430 | * TODO: if we can find out how many frames were aggregated |
| 431 | * by the hw we could provide the real ampdu_len to mac80211 |
| 432 | * which would allow the rc algorithm to better decide on |
| 433 | * which rates are suitable. |
| 434 | */ |
Helmut Schaa | f16d2db | 2011-03-28 13:35:21 +0200 | [diff] [blame] | 435 | if (test_bit(TXDONE_AMPDU, &txdesc->flags) || |
| 436 | tx_info->flags & IEEE80211_TX_CTL_AMPDU) { |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 437 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; |
| 438 | tx_info->status.ampdu_len = 1; |
| 439 | tx_info->status.ampdu_ack_len = success ? 1 : 0; |
Stanislaw Gruszka | ab9d6e4 | 2012-12-03 12:59:04 +0100 | [diff] [blame] | 440 | |
| 441 | if (!success) |
| 442 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 443 | } |
| 444 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 445 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 446 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 447 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 448 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 449 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | /* |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 453 | * Only send the status report to mac80211 when it's a frame |
| 454 | * that originated in mac80211. If this was a extra frame coming |
| 455 | * through a mac80211 library call (RTS/CTS) then we should not |
| 456 | * send the status report back. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 457 | */ |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 458 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 459 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_TASKLET_CONTEXT)) |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 460 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
| 461 | else |
| 462 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); |
| 463 | } else |
Helmut Schaa | 78e256c | 2010-07-11 12:26:48 +0200 | [diff] [blame] | 464 | dev_kfree_skb_any(entry->skb); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 465 | |
| 466 | /* |
| 467 | * Make this entry available for reuse. |
| 468 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 469 | entry->skb = NULL; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 470 | entry->flags = 0; |
| 471 | |
Ivo van Doorn | 798b7ad | 2008-11-08 15:25:33 +0100 | [diff] [blame] | 472 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 473 | |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 474 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 475 | |
| 476 | /* |
| 477 | * If the data queue was below the threshold before the txdone |
| 478 | * handler we must make sure the packet queue in the mac80211 stack |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame] | 479 | * is reenabled when the txdone handler has finished. This has to be |
| 480 | * serialized with rt2x00mac_tx(), otherwise we can wake up queue |
| 481 | * before it was stopped. |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 482 | */ |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame] | 483 | spin_lock_bh(&entry->queue->tx_lock); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 484 | if (!rt2x00queue_threshold(entry->queue)) |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 485 | rt2x00queue_unpause_queue(entry->queue); |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame] | 486 | spin_unlock_bh(&entry->queue->tx_lock); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 487 | } |
| 488 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); |
| 489 | |
Ivo van Doorn | 3392bec | 2010-08-06 20:46:53 +0200 | [diff] [blame] | 490 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) |
| 491 | { |
| 492 | struct txdone_entry_desc txdesc; |
| 493 | |
| 494 | txdesc.flags = 0; |
| 495 | __set_bit(status, &txdesc.flags); |
| 496 | txdesc.retry = 0; |
| 497 | |
| 498 | rt2x00lib_txdone(entry, &txdesc); |
| 499 | } |
| 500 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); |
| 501 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 502 | static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie) |
| 503 | { |
| 504 | struct ieee80211_mgmt *mgmt = (void *)data; |
| 505 | u8 *pos, *end; |
| 506 | |
| 507 | pos = (u8 *)mgmt->u.beacon.variable; |
| 508 | end = data + len; |
| 509 | while (pos < end) { |
| 510 | if (pos + 2 + pos[1] > end) |
| 511 | return NULL; |
| 512 | |
| 513 | if (pos[0] == ie) |
| 514 | return pos; |
| 515 | |
| 516 | pos += 2 + pos[1]; |
| 517 | } |
| 518 | |
| 519 | return NULL; |
| 520 | } |
| 521 | |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 522 | static void rt2x00lib_sleep(struct work_struct *work) |
| 523 | { |
| 524 | struct rt2x00_dev *rt2x00dev = |
| 525 | container_of(work, struct rt2x00_dev, sleep_work); |
| 526 | |
| 527 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 528 | return; |
| 529 | |
| 530 | /* |
| 531 | * Check again is powersaving is enabled, to prevent races from delayed |
| 532 | * work execution. |
| 533 | */ |
| 534 | if (!test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) |
| 535 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, |
| 536 | IEEE80211_CONF_CHANGE_PS); |
| 537 | } |
| 538 | |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 539 | static void rt2x00lib_rxdone_check_ba(struct rt2x00_dev *rt2x00dev, |
| 540 | struct sk_buff *skb, |
| 541 | struct rxdone_entry_desc *rxdesc) |
| 542 | { |
| 543 | struct rt2x00_bar_list_entry *entry; |
| 544 | struct ieee80211_bar *ba = (void *)skb->data; |
| 545 | |
| 546 | if (likely(!ieee80211_is_back(ba->frame_control))) |
| 547 | return; |
| 548 | |
| 549 | if (rxdesc->size < sizeof(*ba) + FCS_LEN) |
| 550 | return; |
| 551 | |
| 552 | rcu_read_lock(); |
| 553 | list_for_each_entry_rcu(entry, &rt2x00dev->bar_list, list) { |
| 554 | |
| 555 | if (ba->start_seq_num != entry->start_seq_num) |
| 556 | continue; |
| 557 | |
| 558 | #define TID_CHECK(a, b) ( \ |
| 559 | ((a) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)) == \ |
| 560 | ((b) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK))) \ |
| 561 | |
| 562 | if (!TID_CHECK(ba->control, entry->control)) |
| 563 | continue; |
| 564 | |
| 565 | #undef TID_CHECK |
| 566 | |
Julia Lawall | f012f75 | 2013-12-30 19:14:57 +0100 | [diff] [blame] | 567 | if (!ether_addr_equal_64bits(ba->ra, entry->ta)) |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 568 | continue; |
| 569 | |
Julia Lawall | f012f75 | 2013-12-30 19:14:57 +0100 | [diff] [blame] | 570 | if (!ether_addr_equal_64bits(ba->ta, entry->ra)) |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 571 | continue; |
| 572 | |
| 573 | /* Mark BAR since we received the according BA */ |
| 574 | spin_lock_bh(&rt2x00dev->bar_list_lock); |
| 575 | entry->block_acked = 1; |
| 576 | spin_unlock_bh(&rt2x00dev->bar_list_lock); |
| 577 | break; |
| 578 | } |
| 579 | rcu_read_unlock(); |
| 580 | |
| 581 | } |
| 582 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 583 | static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev, |
| 584 | struct sk_buff *skb, |
| 585 | struct rxdone_entry_desc *rxdesc) |
| 586 | { |
| 587 | struct ieee80211_hdr *hdr = (void *) skb->data; |
| 588 | struct ieee80211_tim_ie *tim_ie; |
| 589 | u8 *tim; |
| 590 | u8 tim_len; |
| 591 | bool cam; |
| 592 | |
| 593 | /* If this is not a beacon, or if mac80211 has no powersaving |
| 594 | * configured, or if the device is already in powersaving mode |
| 595 | * we can exit now. */ |
| 596 | if (likely(!ieee80211_is_beacon(hdr->frame_control) || |
| 597 | !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS))) |
| 598 | return; |
| 599 | |
| 600 | /* min. beacon length + FCS_LEN */ |
| 601 | if (skb->len <= 40 + FCS_LEN) |
| 602 | return; |
| 603 | |
| 604 | /* and only beacons from the associated BSSID, please */ |
| 605 | if (!(rxdesc->dev_flags & RXDONE_MY_BSS) || |
| 606 | !rt2x00dev->aid) |
| 607 | return; |
| 608 | |
| 609 | rt2x00dev->last_beacon = jiffies; |
| 610 | |
| 611 | tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM); |
| 612 | if (!tim) |
| 613 | return; |
| 614 | |
| 615 | if (tim[1] < sizeof(*tim_ie)) |
| 616 | return; |
| 617 | |
| 618 | tim_len = tim[1]; |
| 619 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; |
| 620 | |
| 621 | /* Check whenever the PHY can be turned off again. */ |
| 622 | |
| 623 | /* 1. What about buffered unicast traffic for our AID? */ |
| 624 | cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid); |
| 625 | |
| 626 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ |
| 627 | cam |= (tim_ie->bitmap_ctrl & 0x01); |
| 628 | |
| 629 | if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 630 | queue_work(rt2x00dev->workqueue, &rt2x00dev->sleep_work); |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 631 | } |
| 632 | |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 633 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
| 634 | struct rxdone_entry_desc *rxdesc) |
| 635 | { |
| 636 | struct ieee80211_supported_band *sband; |
| 637 | const struct rt2x00_rate *rate; |
| 638 | unsigned int i; |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 639 | int signal = rxdesc->signal; |
| 640 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 641 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 642 | switch (rxdesc->rate_mode) { |
| 643 | case RATE_MODE_CCK: |
| 644 | case RATE_MODE_OFDM: |
| 645 | /* |
| 646 | * For non-HT rates the MCS value needs to contain the |
| 647 | * actually used rate modulation (CCK or OFDM). |
| 648 | */ |
| 649 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) |
| 650 | signal = RATE_MCS(rxdesc->rate_mode, signal); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 651 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 652 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
| 653 | for (i = 0; i < sband->n_bitrates; i++) { |
| 654 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
| 655 | if (((type == RXDONE_SIGNAL_PLCP) && |
| 656 | (rate->plcp == signal)) || |
| 657 | ((type == RXDONE_SIGNAL_BITRATE) && |
| 658 | (rate->bitrate == signal)) || |
| 659 | ((type == RXDONE_SIGNAL_MCS) && |
| 660 | (rate->mcs == signal))) { |
| 661 | return i; |
| 662 | } |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 663 | } |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 664 | break; |
| 665 | case RATE_MODE_HT_MIX: |
| 666 | case RATE_MODE_HT_GREENFIELD: |
| 667 | if (signal >= 0 && signal <= 76) |
| 668 | return signal; |
| 669 | break; |
| 670 | default: |
| 671 | break; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 672 | } |
| 673 | |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 674 | rt2x00_warn(rt2x00dev, "Frame received with unrecognized signal, mode=0x%.4x, signal=0x%.4x, type=%d\n", |
| 675 | rxdesc->rate_mode, signal, type); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 676 | return 0; |
| 677 | } |
| 678 | |
Helmut Schaa | 8821102 | 2012-04-19 13:24:10 +0200 | [diff] [blame] | 679 | void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 680 | { |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 681 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 682 | struct rxdone_entry_desc rxdesc; |
| 683 | struct sk_buff *skb; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 684 | struct ieee80211_rx_status *rx_status; |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 685 | unsigned int header_length; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 686 | int rate_idx; |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 687 | |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 688 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
| 689 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 690 | goto submit_entry; |
| 691 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 692 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
| 693 | goto submit_entry; |
| 694 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 695 | /* |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 696 | * Allocate a new sk_buffer. If no new buffer available, drop the |
| 697 | * received frame and reuse the existing buffer. |
| 698 | */ |
Helmut Schaa | 8821102 | 2012-04-19 13:24:10 +0200 | [diff] [blame] | 699 | skb = rt2x00queue_alloc_rxskb(entry, gfp); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 700 | if (!skb) |
Ivo van Doorn | 1550c8e | 2010-10-11 15:38:26 +0200 | [diff] [blame] | 701 | goto submit_entry; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 702 | |
| 703 | /* |
| 704 | * Unmap the skb. |
| 705 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 706 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 707 | |
| 708 | /* |
| 709 | * Extract the RXD details. |
| 710 | */ |
| 711 | memset(&rxdesc, 0, sizeof(rxdesc)); |
| 712 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 713 | |
| 714 | /* |
Stanislaw Gruszka | 7f503fc | 2011-06-19 19:46:02 +0200 | [diff] [blame] | 715 | * Check for valid size in case we get corrupted descriptor from |
| 716 | * hardware. |
| 717 | */ |
| 718 | if (unlikely(rxdesc.size == 0 || |
| 719 | rxdesc.size > entry->queue->data_size)) { |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 720 | rt2x00_err(rt2x00dev, "Wrong frame size %d max %d\n", |
| 721 | rxdesc.size, entry->queue->data_size); |
Stanislaw Gruszka | 7f503fc | 2011-06-19 19:46:02 +0200 | [diff] [blame] | 722 | dev_kfree_skb(entry->skb); |
| 723 | goto renew_skb; |
| 724 | } |
| 725 | |
| 726 | /* |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 727 | * The data behind the ieee80211 header must be |
Gertjan van Wingerde | a9f853d | 2008-06-07 16:57:09 +0200 | [diff] [blame] | 728 | * aligned on a 4 byte boundary. |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 729 | */ |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 730 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 731 | |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 732 | /* |
| 733 | * Hardware might have stripped the IV/EIV/ICV data, |
| 734 | * in that case it is possible that the data was |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 735 | * provided separately (through hardware descriptor) |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 736 | * in which case we should reinsert the data into the frame. |
| 737 | */ |
Ivo van Doorn | 74415ed | 2008-12-02 22:50:33 +0100 | [diff] [blame] | 738 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 739 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 740 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 741 | &rxdesc); |
Gertjan van Wingerde | b734083 | 2009-12-04 23:47:04 +0100 | [diff] [blame] | 742 | else if (header_length && |
| 743 | (rxdesc.size > header_length) && |
| 744 | (rxdesc.dev_flags & RXDONE_L2PAD)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 745 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 746 | |
Alban Browaeys | 1398d45 | 2009-12-04 23:47:00 +0100 | [diff] [blame] | 747 | /* Trim buffer to correct size */ |
| 748 | skb_trim(entry->skb, rxdesc.size); |
| 749 | |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 750 | /* |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 751 | * Translate the signal to the correct bitrate index. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 752 | */ |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 753 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
| 754 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || |
| 755 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 756 | rxdesc.flags |= RX_FLAG_HT; |
Ivo van Doorn | 866a050 | 2008-03-25 14:12:45 +0100 | [diff] [blame] | 757 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 758 | /* |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 759 | * Check if this is a beacon, and more frames have been |
| 760 | * buffered while we were in powersaving mode. |
| 761 | */ |
| 762 | rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc); |
| 763 | |
| 764 | /* |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 765 | * Check for incoming BlockAcks to match to the BlockAckReqs |
| 766 | * we've send out. |
| 767 | */ |
| 768 | rt2x00lib_rxdone_check_ba(rt2x00dev, entry->skb, &rxdesc); |
| 769 | |
| 770 | /* |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 771 | * Update extra components |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 772 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 773 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
| 774 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 775 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 776 | |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 777 | /* |
| 778 | * Initialize RX status information, and send frame |
| 779 | * to mac80211. |
| 780 | */ |
| 781 | rx_status = IEEE80211_SKB_RXCB(entry->skb); |
Gabor Juhos | 028014c | 2012-12-11 18:27:34 +0100 | [diff] [blame] | 782 | |
| 783 | /* Ensure that all fields of rx_status are initialized |
| 784 | * properly. The skb->cb array was used for driver |
| 785 | * specific informations, so rx_status might contain |
| 786 | * garbage. |
| 787 | */ |
| 788 | memset(rx_status, 0, sizeof(*rx_status)); |
| 789 | |
Ivo van Doorn | ae73e58 | 2008-07-04 16:14:59 +0200 | [diff] [blame] | 790 | rx_status->mactime = rxdesc.timestamp; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 791 | rx_status->band = rt2x00dev->curr_band; |
| 792 | rx_status->freq = rt2x00dev->curr_freq; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 793 | rx_status->rate_idx = rate_idx; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 794 | rx_status->signal = rxdesc.rssi; |
| 795 | rx_status->flag = rxdesc.flags; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 796 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 797 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 798 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 799 | |
Stanislaw Gruszka | 7f503fc | 2011-06-19 19:46:02 +0200 | [diff] [blame] | 800 | renew_skb: |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 801 | /* |
| 802 | * Replace the skb with the freshly allocated one. |
| 803 | */ |
| 804 | entry->skb = skb; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 805 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 806 | submit_entry: |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 807 | entry->flags = 0; |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 808 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 809 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 810 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 811 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 812 | } |
| 813 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); |
| 814 | |
| 815 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 816 | * Driver initialization handlers. |
| 817 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 818 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
| 819 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 820 | .flags = DEV_RATE_CCK, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 821 | .bitrate = 10, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 822 | .ratemask = BIT(0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 823 | .plcp = 0x00, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 824 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 825 | }, |
| 826 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 827 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 828 | .bitrate = 20, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 829 | .ratemask = BIT(1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 830 | .plcp = 0x01, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 831 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 832 | }, |
| 833 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 834 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 835 | .bitrate = 55, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 836 | .ratemask = BIT(2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 837 | .plcp = 0x02, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 838 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 839 | }, |
| 840 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 841 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 842 | .bitrate = 110, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 843 | .ratemask = BIT(3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 844 | .plcp = 0x03, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 845 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 846 | }, |
| 847 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 848 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 849 | .bitrate = 60, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 850 | .ratemask = BIT(4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 851 | .plcp = 0x0b, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 852 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 853 | }, |
| 854 | { |
| 855 | .flags = DEV_RATE_OFDM, |
| 856 | .bitrate = 90, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 857 | .ratemask = BIT(5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 858 | .plcp = 0x0f, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 859 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 860 | }, |
| 861 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 862 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 863 | .bitrate = 120, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 864 | .ratemask = BIT(6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 865 | .plcp = 0x0a, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 866 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 867 | }, |
| 868 | { |
| 869 | .flags = DEV_RATE_OFDM, |
| 870 | .bitrate = 180, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 871 | .ratemask = BIT(7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 872 | .plcp = 0x0e, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 873 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 874 | }, |
| 875 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 876 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 877 | .bitrate = 240, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 878 | .ratemask = BIT(8), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 879 | .plcp = 0x09, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 880 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 881 | }, |
| 882 | { |
| 883 | .flags = DEV_RATE_OFDM, |
| 884 | .bitrate = 360, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 885 | .ratemask = BIT(9), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 886 | .plcp = 0x0d, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 887 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 888 | }, |
| 889 | { |
| 890 | .flags = DEV_RATE_OFDM, |
| 891 | .bitrate = 480, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 892 | .ratemask = BIT(10), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 893 | .plcp = 0x08, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 894 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 895 | }, |
| 896 | { |
| 897 | .flags = DEV_RATE_OFDM, |
| 898 | .bitrate = 540, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 899 | .ratemask = BIT(11), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 900 | .plcp = 0x0c, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 901 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 902 | }, |
| 903 | }; |
| 904 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 905 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
| 906 | const int channel, const int tx_power, |
| 907 | const int value) |
| 908 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 909 | /* XXX: this assumption about the band is wrong for 802.11j */ |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 910 | entry->band = channel <= 14 ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 911 | entry->center_freq = ieee80211_channel_to_frequency(channel, |
| 912 | entry->band); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 913 | entry->hw_value = value; |
| 914 | entry->max_power = tx_power; |
| 915 | entry->max_antenna_gain = 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | static void rt2x00lib_rate(struct ieee80211_rate *entry, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 919 | const u16 index, const struct rt2x00_rate *rate) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 920 | { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 921 | entry->flags = 0; |
| 922 | entry->bitrate = rate->bitrate; |
Mark Einon | c2361ba | 2010-11-06 15:46:36 +0100 | [diff] [blame] | 923 | entry->hw_value = index; |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 924 | entry->hw_value_short = index; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 925 | |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 926 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 927 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 928 | } |
| 929 | |
Mathias Kresin | 9766cb7 | 2016-08-26 09:16:53 +0200 | [diff] [blame] | 930 | void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr) |
| 931 | { |
| 932 | const char *mac_addr; |
| 933 | |
| 934 | mac_addr = of_get_mac_address(rt2x00dev->dev->of_node); |
| 935 | if (mac_addr) |
| 936 | ether_addr_copy(eeprom_mac_addr, mac_addr); |
| 937 | |
| 938 | if (!is_valid_ether_addr(eeprom_mac_addr)) { |
| 939 | eth_random_addr(eeprom_mac_addr); |
| 940 | rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", eeprom_mac_addr); |
| 941 | } |
| 942 | } |
| 943 | EXPORT_SYMBOL_GPL(rt2x00lib_set_mac_address); |
| 944 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 945 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, |
| 946 | struct hw_mode_spec *spec) |
| 947 | { |
| 948 | struct ieee80211_hw *hw = rt2x00dev->hw; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 949 | struct ieee80211_channel *channels; |
| 950 | struct ieee80211_rate *rates; |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 951 | unsigned int num_rates; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 952 | unsigned int i; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 953 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 954 | num_rates = 0; |
| 955 | if (spec->supported_rates & SUPPORT_RATE_CCK) |
| 956 | num_rates += 4; |
| 957 | if (spec->supported_rates & SUPPORT_RATE_OFDM) |
| 958 | num_rates += 8; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 959 | |
Thomas Meyer | 839fafb | 2011-11-29 22:08:00 +0100 | [diff] [blame] | 960 | channels = kcalloc(spec->num_channels, sizeof(*channels), GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 961 | if (!channels) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 962 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 963 | |
Thomas Meyer | 839fafb | 2011-11-29 22:08:00 +0100 | [diff] [blame] | 964 | rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 965 | if (!rates) |
| 966 | goto exit_free_channels; |
| 967 | |
| 968 | /* |
| 969 | * Initialize Rate list. |
| 970 | */ |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 971 | for (i = 0; i < num_rates; i++) |
Ivo van Doorn | 8f5fa7f | 2008-02-03 15:54:34 +0100 | [diff] [blame] | 972 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 973 | |
| 974 | /* |
| 975 | * Initialize Channel list. |
| 976 | */ |
| 977 | for (i = 0; i < spec->num_channels; i++) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 978 | rt2x00lib_channel(&channels[i], |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 979 | spec->channels[i].channel, |
Ivo van Doorn | 8d1331b | 2010-08-23 19:56:07 +0200 | [diff] [blame] | 980 | spec->channels_info[i].max_power, i); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | /* |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 984 | * Intitialize 802.11b, 802.11g |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 985 | * Rates: CCK, OFDM. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 986 | * Channels: 2.4 GHz |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 987 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 988 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 989 | rt2x00dev->bands[NL80211_BAND_2GHZ].n_channels = 14; |
| 990 | rt2x00dev->bands[NL80211_BAND_2GHZ].n_bitrates = num_rates; |
| 991 | rt2x00dev->bands[NL80211_BAND_2GHZ].channels = channels; |
| 992 | rt2x00dev->bands[NL80211_BAND_2GHZ].bitrates = rates; |
| 993 | hw->wiphy->bands[NL80211_BAND_2GHZ] = |
| 994 | &rt2x00dev->bands[NL80211_BAND_2GHZ]; |
| 995 | memcpy(&rt2x00dev->bands[NL80211_BAND_2GHZ].ht_cap, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 996 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | /* |
| 1000 | * Intitialize 802.11a |
| 1001 | * Rates: OFDM. |
| 1002 | * Channels: OFDM, UNII, HiperLAN2. |
| 1003 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 1004 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1005 | rt2x00dev->bands[NL80211_BAND_5GHZ].n_channels = |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 1006 | spec->num_channels - 14; |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1007 | rt2x00dev->bands[NL80211_BAND_5GHZ].n_bitrates = |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 1008 | num_rates - 4; |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1009 | rt2x00dev->bands[NL80211_BAND_5GHZ].channels = &channels[14]; |
| 1010 | rt2x00dev->bands[NL80211_BAND_5GHZ].bitrates = &rates[4]; |
| 1011 | hw->wiphy->bands[NL80211_BAND_5GHZ] = |
| 1012 | &rt2x00dev->bands[NL80211_BAND_5GHZ]; |
| 1013 | memcpy(&rt2x00dev->bands[NL80211_BAND_5GHZ].ht_cap, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 1014 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1015 | } |
| 1016 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1017 | return 0; |
| 1018 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1019 | exit_free_channels: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1020 | kfree(channels); |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1021 | rt2x00_err(rt2x00dev, "Allocation ieee80211 modes failed\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1022 | return -ENOMEM; |
| 1023 | } |
| 1024 | |
| 1025 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) |
| 1026 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1027 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1028 | ieee80211_unregister_hw(rt2x00dev->hw); |
| 1029 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1030 | if (likely(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ])) { |
| 1031 | kfree(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels); |
| 1032 | kfree(rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ]->bitrates); |
| 1033 | rt2x00dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL; |
| 1034 | rt2x00dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1035 | } |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 1036 | |
| 1037 | kfree(rt2x00dev->spec.channels_info); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1038 | } |
| 1039 | |
| 1040 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) |
| 1041 | { |
| 1042 | struct hw_mode_spec *spec = &rt2x00dev->spec; |
| 1043 | int status; |
| 1044 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1045 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
| 1046 | return 0; |
| 1047 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1048 | /* |
| 1049 | * Initialize HW modes. |
| 1050 | */ |
| 1051 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); |
| 1052 | if (status) |
| 1053 | return status; |
| 1054 | |
| 1055 | /* |
Gertjan van Wingerde | 61448f8 | 2008-05-10 13:43:33 +0200 | [diff] [blame] | 1056 | * Initialize HW fields. |
| 1057 | */ |
| 1058 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; |
| 1059 | |
| 1060 | /* |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 1061 | * Initialize extra TX headroom required. |
| 1062 | */ |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 1063 | rt2x00dev->hw->extra_tx_headroom = |
| 1064 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, |
Gabor Juhos | 5616a6e | 2013-06-06 09:36:19 +0200 | [diff] [blame] | 1065 | rt2x00dev->extra_tx_headroom); |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 1066 | |
| 1067 | /* |
| 1068 | * Take TX headroom required for alignment into account. |
| 1069 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1070 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_L2PAD)) |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 1071 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1072 | else if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DMA)) |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 1073 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 1074 | |
| 1075 | /* |
Helmut Schaa | b4943d8 | 2011-09-08 14:36:04 +0200 | [diff] [blame] | 1076 | * Tell mac80211 about the size of our private STA structure. |
| 1077 | */ |
| 1078 | rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta); |
| 1079 | |
| 1080 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1081 | * Allocate tx status FIFO for driver use. |
| 1082 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1083 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_TXSTATUS_FIFO)) { |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1084 | /* |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 1085 | * Allocate the txstatus fifo. In the worst case the tx |
| 1086 | * status fifo has to hold the tx status of all entries |
| 1087 | * in all tx queues. Hence, calculate the kfifo size as |
| 1088 | * tx_queues * entry_num and round up to the nearest |
| 1089 | * power of 2. |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1090 | */ |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 1091 | int kfifo_size = |
| 1092 | roundup_pow_of_two(rt2x00dev->ops->tx_queues * |
Gabor Juhos | 54ca193 | 2013-05-01 17:17:29 +0200 | [diff] [blame] | 1093 | rt2x00dev->tx->limit * |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 1094 | sizeof(u32)); |
| 1095 | |
| 1096 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size, |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1097 | GFP_KERNEL); |
| 1098 | if (status) |
| 1099 | return status; |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | /* |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 1103 | * Initialize tasklets if used by the driver. Tasklets are |
| 1104 | * disabled until the interrupts are turned on. The driver |
| 1105 | * has to handle that. |
| 1106 | */ |
| 1107 | #define RT2X00_TASKLET_INIT(taskletname) \ |
| 1108 | if (rt2x00dev->ops->lib->taskletname) { \ |
| 1109 | tasklet_init(&rt2x00dev->taskletname, \ |
| 1110 | rt2x00dev->ops->lib->taskletname, \ |
| 1111 | (unsigned long)rt2x00dev); \ |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 1112 | } |
| 1113 | |
Helmut Schaa | c8e15a1 | 2011-01-30 13:18:13 +0100 | [diff] [blame] | 1114 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 1115 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
| 1116 | RT2X00_TASKLET_INIT(tbtt_tasklet); |
| 1117 | RT2X00_TASKLET_INIT(rxdone_tasklet); |
| 1118 | RT2X00_TASKLET_INIT(autowake_tasklet); |
| 1119 | |
| 1120 | #undef RT2X00_TASKLET_INIT |
| 1121 | |
| 1122 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1123 | * Register HW. |
| 1124 | */ |
| 1125 | status = ieee80211_register_hw(rt2x00dev->hw); |
Herton Ronaldo Krzesinski | f05faa3 | 2009-04-10 18:05:14 -0300 | [diff] [blame] | 1126 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1127 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1128 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1129 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1130 | |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
| 1134 | /* |
| 1135 | * Initialization/uninitialization handlers. |
| 1136 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1137 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1138 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1139 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1140 | return; |
| 1141 | |
| 1142 | /* |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1143 | * Stop rfkill polling. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1144 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1145 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL)) |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1146 | rt2x00rfkill_unregister(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1147 | |
| 1148 | /* |
| 1149 | * Allow the HW to uninitialize. |
| 1150 | */ |
| 1151 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); |
| 1152 | |
| 1153 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1154 | * Free allocated queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1155 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1156 | rt2x00queue_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1157 | } |
| 1158 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1159 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1160 | { |
| 1161 | int status; |
| 1162 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1163 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1164 | return 0; |
| 1165 | |
| 1166 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1167 | * Allocate all queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1168 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1169 | status = rt2x00queue_initialize(rt2x00dev); |
| 1170 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1171 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1172 | |
| 1173 | /* |
| 1174 | * Initialize the device. |
| 1175 | */ |
| 1176 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); |
Ivo van Doorn | ed49998 | 2008-05-05 17:23:47 +0200 | [diff] [blame] | 1177 | if (status) { |
| 1178 | rt2x00queue_uninitialize(rt2x00dev); |
| 1179 | return status; |
| 1180 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1181 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1182 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1183 | |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1184 | /* |
| 1185 | * Start rfkill polling. |
| 1186 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1187 | if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL)) |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1188 | rt2x00rfkill_register(rt2x00dev); |
| 1189 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1190 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1191 | } |
| 1192 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1193 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
| 1194 | { |
| 1195 | int retval; |
| 1196 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1197 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1198 | return 0; |
| 1199 | |
| 1200 | /* |
| 1201 | * If this is the first interface which is added, |
| 1202 | * we should load the firmware now. |
| 1203 | */ |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 1204 | retval = rt2x00lib_load_firmware(rt2x00dev); |
| 1205 | if (retval) |
| 1206 | return retval; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1207 | |
| 1208 | /* |
| 1209 | * Initialize the device. |
| 1210 | */ |
| 1211 | retval = rt2x00lib_initialize(rt2x00dev); |
| 1212 | if (retval) |
| 1213 | return retval; |
| 1214 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1215 | rt2x00dev->intf_ap_count = 0; |
| 1216 | rt2x00dev->intf_sta_count = 0; |
| 1217 | rt2x00dev->intf_associated = 0; |
| 1218 | |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1219 | /* Enable the radio */ |
| 1220 | retval = rt2x00lib_enable_radio(rt2x00dev); |
Helmut Schaa | 1f0280c | 2010-10-02 11:34:05 +0200 | [diff] [blame] | 1221 | if (retval) |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1222 | return retval; |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1223 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1224 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1225 | |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
| 1229 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |
| 1230 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1231 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1232 | return; |
| 1233 | |
| 1234 | /* |
| 1235 | * Perhaps we can add something smarter here, |
| 1236 | * but for now just disabling the radio should do. |
| 1237 | */ |
| 1238 | rt2x00lib_disable_radio(rt2x00dev); |
| 1239 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1240 | rt2x00dev->intf_ap_count = 0; |
| 1241 | rt2x00dev->intf_sta_count = 0; |
| 1242 | rt2x00dev->intf_associated = 0; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1243 | } |
| 1244 | |
Gertjan van Wingerde | 55d2e9d | 2012-09-23 20:22:54 +0200 | [diff] [blame] | 1245 | static inline void rt2x00lib_set_if_combinations(struct rt2x00_dev *rt2x00dev) |
| 1246 | { |
| 1247 | struct ieee80211_iface_limit *if_limit; |
| 1248 | struct ieee80211_iface_combination *if_combination; |
| 1249 | |
Helmut Schaa | f5685ba | 2012-12-03 22:35:39 +0100 | [diff] [blame] | 1250 | if (rt2x00dev->ops->max_ap_intf < 2) |
| 1251 | return; |
| 1252 | |
Gertjan van Wingerde | 55d2e9d | 2012-09-23 20:22:54 +0200 | [diff] [blame] | 1253 | /* |
| 1254 | * Build up AP interface limits structure. |
| 1255 | */ |
| 1256 | if_limit = &rt2x00dev->if_limits_ap; |
| 1257 | if_limit->max = rt2x00dev->ops->max_ap_intf; |
Felix Fietkau | 6ef9e2f | 2013-02-26 16:09:55 +0100 | [diff] [blame] | 1258 | if_limit->types = BIT(NL80211_IFTYPE_AP); |
| 1259 | #ifdef CONFIG_MAC80211_MESH |
| 1260 | if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT); |
| 1261 | #endif |
Gertjan van Wingerde | 55d2e9d | 2012-09-23 20:22:54 +0200 | [diff] [blame] | 1262 | |
| 1263 | /* |
| 1264 | * Build up AP interface combinations structure. |
| 1265 | */ |
| 1266 | if_combination = &rt2x00dev->if_combinations[IF_COMB_AP]; |
| 1267 | if_combination->limits = if_limit; |
| 1268 | if_combination->n_limits = 1; |
| 1269 | if_combination->max_interfaces = if_limit->max; |
| 1270 | if_combination->num_different_channels = 1; |
| 1271 | |
| 1272 | /* |
| 1273 | * Finally, specify the possible combinations to mac80211. |
| 1274 | */ |
| 1275 | rt2x00dev->hw->wiphy->iface_combinations = rt2x00dev->if_combinations; |
| 1276 | rt2x00dev->hw->wiphy->n_iface_combinations = 1; |
| 1277 | } |
| 1278 | |
Gabor Juhos | 5616a6e | 2013-06-06 09:36:19 +0200 | [diff] [blame] | 1279 | static unsigned int rt2x00dev_extra_tx_headroom(struct rt2x00_dev *rt2x00dev) |
| 1280 | { |
| 1281 | if (WARN_ON(!rt2x00dev->tx)) |
| 1282 | return 0; |
| 1283 | |
| 1284 | if (rt2x00_is_usb(rt2x00dev)) |
| 1285 | return rt2x00dev->tx[0].winfo_size + rt2x00dev->tx[0].desc_size; |
| 1286 | |
| 1287 | return rt2x00dev->tx[0].winfo_size; |
| 1288 | } |
| 1289 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1290 | /* |
| 1291 | * driver allocation handlers. |
| 1292 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1293 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
| 1294 | { |
| 1295 | int retval = -ENOMEM; |
| 1296 | |
Gertjan van Wingerde | 1ebbc48 | 2012-02-06 23:45:06 +0100 | [diff] [blame] | 1297 | /* |
Gertjan van Wingerde | 55d2e9d | 2012-09-23 20:22:54 +0200 | [diff] [blame] | 1298 | * Set possible interface combinations. |
| 1299 | */ |
| 1300 | rt2x00lib_set_if_combinations(rt2x00dev); |
| 1301 | |
| 1302 | /* |
Gertjan van Wingerde | 1ebbc48 | 2012-02-06 23:45:06 +0100 | [diff] [blame] | 1303 | * Allocate the driver data memory, if necessary. |
| 1304 | */ |
| 1305 | if (rt2x00dev->ops->drv_data_size > 0) { |
| 1306 | rt2x00dev->drv_data = kzalloc(rt2x00dev->ops->drv_data_size, |
| 1307 | GFP_KERNEL); |
| 1308 | if (!rt2x00dev->drv_data) { |
| 1309 | retval = -ENOMEM; |
| 1310 | goto exit; |
| 1311 | } |
| 1312 | } |
| 1313 | |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 1314 | spin_lock_init(&rt2x00dev->irqmask_lock); |
Ivo van Doorn | 8ff48a8 | 2008-11-09 23:40:46 +0100 | [diff] [blame] | 1315 | mutex_init(&rt2x00dev->csr_mutex); |
Stanislaw Gruszka | c7d1c77 | 2016-12-19 11:52:57 +0100 | [diff] [blame] | 1316 | mutex_init(&rt2x00dev->conf_mutex); |
Helmut Schaa | 84e9e8ebd | 2013-01-17 17:34:32 +0100 | [diff] [blame] | 1317 | INIT_LIST_HEAD(&rt2x00dev->bar_list); |
| 1318 | spin_lock_init(&rt2x00dev->bar_list_lock); |
Ivo van Doorn | 8ff48a8 | 2008-11-09 23:40:46 +0100 | [diff] [blame] | 1319 | |
Sean Cross | 66f84d6 | 2009-11-05 20:22:03 +0100 | [diff] [blame] | 1320 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
| 1321 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1322 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1323 | * Make room for rt2x00_intf inside the per-interface |
| 1324 | * structure ieee80211_vif. |
| 1325 | */ |
| 1326 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); |
| 1327 | |
Ivo van Doorn | 3514a44 | 2008-10-29 17:18:46 +0100 | [diff] [blame] | 1328 | /* |
Helmut Schaa | 6c50f94 | 2012-11-28 10:28:52 +0100 | [diff] [blame] | 1329 | * rt2x00 devices can only use the last n bits of the MAC address |
| 1330 | * for virtual interfaces. |
| 1331 | */ |
| 1332 | rt2x00dev->hw->wiphy->addr_mask[ETH_ALEN - 1] = |
| 1333 | (rt2x00dev->ops->max_ap_intf - 1); |
| 1334 | |
| 1335 | /* |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1336 | * Initialize work. |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1337 | */ |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1338 | rt2x00dev->workqueue = |
Kees Cook | d853754 | 2013-07-03 15:04:57 -0700 | [diff] [blame] | 1339 | alloc_ordered_workqueue("%s", 0, wiphy_name(rt2x00dev->hw->wiphy)); |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1340 | if (!rt2x00dev->workqueue) { |
| 1341 | retval = -ENOMEM; |
| 1342 | goto exit; |
| 1343 | } |
| 1344 | |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1345 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 1346 | INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup); |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 1347 | INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep); |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1348 | |
| 1349 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1350 | * Let the driver probe the device to detect the capabilities. |
| 1351 | */ |
| 1352 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); |
| 1353 | if (retval) { |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1354 | rt2x00_err(rt2x00dev, "Failed to allocate device\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1355 | goto exit; |
| 1356 | } |
| 1357 | |
| 1358 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1359 | * Allocate queue array. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1360 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1361 | retval = rt2x00queue_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1362 | if (retval) |
| 1363 | goto exit; |
| 1364 | |
Gabor Juhos | 5616a6e | 2013-06-06 09:36:19 +0200 | [diff] [blame] | 1365 | /* Cache TX headroom value */ |
| 1366 | rt2x00dev->extra_tx_headroom = rt2x00dev_extra_tx_headroom(rt2x00dev); |
| 1367 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1368 | /* |
Gabor Juhos | e9e4330 | 2013-05-01 17:17:34 +0200 | [diff] [blame] | 1369 | * Determine which operating modes are supported, all modes |
| 1370 | * which require beaconing, depend on the availability of |
| 1371 | * beacon entries. |
| 1372 | */ |
| 1373 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
Gabor Juhos | 56e8256 | 2013-06-04 13:40:40 +0200 | [diff] [blame] | 1374 | if (rt2x00dev->bcn->limit > 0) |
Gabor Juhos | e9e4330 | 2013-05-01 17:17:34 +0200 | [diff] [blame] | 1375 | rt2x00dev->hw->wiphy->interface_modes |= |
| 1376 | BIT(NL80211_IFTYPE_ADHOC) | |
Gabor Juhos | e9e4330 | 2013-05-01 17:17:34 +0200 | [diff] [blame] | 1377 | #ifdef CONFIG_MAC80211_MESH |
| 1378 | BIT(NL80211_IFTYPE_MESH_POINT) | |
| 1379 | #endif |
Johannes Berg | 8f20542 | 2016-10-18 10:28:57 +0200 | [diff] [blame] | 1380 | #ifdef CONFIG_WIRELESS_WDS |
| 1381 | BIT(NL80211_IFTYPE_WDS) | |
| 1382 | #endif |
| 1383 | BIT(NL80211_IFTYPE_AP); |
Gabor Juhos | e9e4330 | 2013-05-01 17:17:34 +0200 | [diff] [blame] | 1384 | |
| 1385 | rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
| 1386 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1387 | /* |
| 1388 | * Initialize ieee80211 structure. |
| 1389 | */ |
| 1390 | retval = rt2x00lib_probe_hw(rt2x00dev); |
| 1391 | if (retval) { |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1392 | rt2x00_err(rt2x00dev, "Failed to initialize hw\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1393 | goto exit; |
| 1394 | } |
| 1395 | |
| 1396 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1397 | * Register extra components. |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1398 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 1399 | rt2x00link_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1400 | rt2x00leds_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1401 | rt2x00debug_register(rt2x00dev); |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1402 | |
| 1403 | /* |
| 1404 | * Start rfkill polling. |
| 1405 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1406 | if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL)) |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1407 | rt2x00rfkill_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1408 | |
| 1409 | return 0; |
| 1410 | |
| 1411 | exit: |
| 1412 | rt2x00lib_remove_dev(rt2x00dev); |
| 1413 | |
| 1414 | return retval; |
| 1415 | } |
| 1416 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); |
| 1417 | |
| 1418 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) |
| 1419 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1420 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1421 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1422 | /* |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1423 | * Stop rfkill polling. |
| 1424 | */ |
Fred Chou | b9d305c | 2014-12-26 16:19:18 +0800 | [diff] [blame] | 1425 | if (!rt2x00_has_cap_flag(rt2x00dev, REQUIRE_DELAYED_RFKILL)) |
Stanislaw Gruszka | 616a839 | 2014-06-16 18:45:15 +0200 | [diff] [blame] | 1426 | rt2x00rfkill_unregister(rt2x00dev); |
| 1427 | |
| 1428 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1429 | * Disable radio. |
| 1430 | */ |
| 1431 | rt2x00lib_disable_radio(rt2x00dev); |
| 1432 | |
| 1433 | /* |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1434 | * Stop all work. |
| 1435 | */ |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1436 | cancel_work_sync(&rt2x00dev->intf_work); |
Stanislaw Gruszka | 3bb42a6 | 2011-06-04 16:48:54 +0200 | [diff] [blame] | 1437 | cancel_delayed_work_sync(&rt2x00dev->autowakeup_work); |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 1438 | cancel_work_sync(&rt2x00dev->sleep_work); |
Vishal Thanki | a083c8f | 2016-11-16 17:01:54 +0100 | [diff] [blame] | 1439 | #if IS_ENABLED(CONFIG_RT2X00_LIB_USB) |
Stanislaw Gruszka | 37f4ee0 | 2011-04-04 13:50:32 +0200 | [diff] [blame] | 1440 | if (rt2x00_is_usb(rt2x00dev)) { |
Vishal Thanki | 8b4c000 | 2016-03-19 11:41:01 +0100 | [diff] [blame] | 1441 | usb_kill_anchored_urbs(rt2x00dev->anchor); |
Stanislaw Gruszka | f421111 | 2012-03-14 11:16:19 +0100 | [diff] [blame] | 1442 | hrtimer_cancel(&rt2x00dev->txstatus_timer); |
Stanislaw Gruszka | 37f4ee0 | 2011-04-04 13:50:32 +0200 | [diff] [blame] | 1443 | cancel_work_sync(&rt2x00dev->rxdone_work); |
| 1444 | cancel_work_sync(&rt2x00dev->txdone_work); |
| 1445 | } |
Vishal Thanki | 8b4c000 | 2016-03-19 11:41:01 +0100 | [diff] [blame] | 1446 | #endif |
Gabor Juhos | 7be0815 | 2012-02-16 20:44:59 +0100 | [diff] [blame] | 1447 | if (rt2x00dev->workqueue) |
| 1448 | destroy_workqueue(rt2x00dev->workqueue); |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1449 | |
| 1450 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1451 | * Free the tx status fifo. |
| 1452 | */ |
| 1453 | kfifo_free(&rt2x00dev->txstatus_fifo); |
| 1454 | |
| 1455 | /* |
| 1456 | * Kill the tx status tasklet. |
| 1457 | */ |
| 1458 | tasklet_kill(&rt2x00dev->txstatus_tasklet); |
Ivo van Doorn | e1f4e80 | 2011-01-30 13:23:42 +0100 | [diff] [blame] | 1459 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
| 1460 | tasklet_kill(&rt2x00dev->tbtt_tasklet); |
| 1461 | tasklet_kill(&rt2x00dev->rxdone_tasklet); |
| 1462 | tasklet_kill(&rt2x00dev->autowake_tasklet); |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1463 | |
| 1464 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1465 | * Uninitialize device. |
| 1466 | */ |
| 1467 | rt2x00lib_uninitialize(rt2x00dev); |
| 1468 | |
| 1469 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1470 | * Free extra components |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1471 | */ |
| 1472 | rt2x00debug_deregister(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1473 | rt2x00leds_unregister(rt2x00dev); |
| 1474 | |
| 1475 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1476 | * Free ieee80211_hw memory. |
| 1477 | */ |
| 1478 | rt2x00lib_remove_hw(rt2x00dev); |
| 1479 | |
| 1480 | /* |
| 1481 | * Free firmware image. |
| 1482 | */ |
| 1483 | rt2x00lib_free_firmware(rt2x00dev); |
| 1484 | |
| 1485 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1486 | * Free queue structures. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1487 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1488 | rt2x00queue_free(rt2x00dev); |
Gertjan van Wingerde | 1ebbc48 | 2012-02-06 23:45:06 +0100 | [diff] [blame] | 1489 | |
| 1490 | /* |
| 1491 | * Free the driver data. |
| 1492 | */ |
Fabian Frederick | d4150246 | 2014-06-18 16:51:29 +0200 | [diff] [blame] | 1493 | kfree(rt2x00dev->drv_data); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1494 | } |
| 1495 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); |
| 1496 | |
| 1497 | /* |
| 1498 | * Device state handlers |
| 1499 | */ |
| 1500 | #ifdef CONFIG_PM |
| 1501 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) |
| 1502 | { |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1503 | rt2x00_dbg(rt2x00dev, "Going to sleep\n"); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1504 | |
| 1505 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1506 | * Prevent mac80211 from accessing driver while suspended. |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1507 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1508 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 1509 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1510 | |
| 1511 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1512 | * Cleanup as much as possible. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1513 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1514 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1515 | |
| 1516 | /* |
| 1517 | * Suspend/disable extra components. |
| 1518 | */ |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1519 | rt2x00leds_suspend(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1520 | rt2x00debug_deregister(rt2x00dev); |
| 1521 | |
| 1522 | /* |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1523 | * Set device mode to sleep for power management, |
| 1524 | * on some hardware this call seems to consistently fail. |
| 1525 | * From the specifications it is hard to tell why it fails, |
| 1526 | * and if this is a "bad thing". |
| 1527 | * Overall it is safe to just ignore the failure and |
| 1528 | * continue suspending. The only downside is that the |
| 1529 | * device will not be in optimal power save mode, but with |
| 1530 | * the radio and the other components already disabled the |
| 1531 | * device is as good as disabled. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1532 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1533 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1534 | rt2x00_warn(rt2x00dev, "Device failed to enter sleep state, continue suspending\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1535 | |
| 1536 | return 0; |
| 1537 | } |
| 1538 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); |
| 1539 | |
| 1540 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
| 1541 | { |
Joe Perches | ec9c498 | 2013-04-19 08:33:40 -0700 | [diff] [blame] | 1542 | rt2x00_dbg(rt2x00dev, "Waking up\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1543 | |
| 1544 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1545 | * Restore/enable extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1546 | */ |
| 1547 | rt2x00debug_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1548 | rt2x00leds_resume(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1549 | |
| 1550 | /* |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1551 | * We are ready again to receive requests from mac80211. |
| 1552 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1553 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1554 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1555 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1556 | } |
| 1557 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); |
| 1558 | #endif /* CONFIG_PM */ |
| 1559 | |
| 1560 | /* |
| 1561 | * rt2x00lib module information. |
| 1562 | */ |
| 1563 | MODULE_AUTHOR(DRV_PROJECT); |
| 1564 | MODULE_VERSION(DRV_VERSION); |
| 1565 | MODULE_DESCRIPTION("rt2x00 library"); |
| 1566 | MODULE_LICENSE("GPL"); |