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 |
| 17 | along with this program; if not, write to the |
| 18 | Free Software Foundation, Inc., |
| 19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | Module: rt2x00lib |
| 24 | Abstract: rt2x00 generic device routines. |
| 25 | */ |
| 26 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 27 | #include <linux/kernel.h> |
| 28 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 30 | #include <linux/log2.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); |
Helmut Schaa | 9e33a35 | 2011-03-28 13:33:40 +0200 | [diff] [blame] | 90 | rt2x00link_start_agc(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 91 | |
| 92 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 93 | * Start watchdog monitoring. |
| 94 | */ |
| 95 | rt2x00link_start_watchdog(rt2x00dev); |
| 96 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 101 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 102 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 103 | return; |
| 104 | |
| 105 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 106 | * Stop watchdog monitoring. |
| 107 | */ |
| 108 | rt2x00link_stop_watchdog(rt2x00dev); |
| 109 | |
| 110 | /* |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 111 | * Stop all queues |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 112 | */ |
Helmut Schaa | 9e33a35 | 2011-03-28 13:33:40 +0200 | [diff] [blame] | 113 | rt2x00link_stop_agc(rt2x00dev); |
Ivo van Doorn | ea175ee | 2010-11-06 15:48:43 +0100 | [diff] [blame] | 114 | rt2x00link_stop_tuner(rt2x00dev); |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 115 | rt2x00queue_stop_queues(rt2x00dev); |
Ivo van Doorn | 5be6560 | 2010-12-13 12:35:40 +0100 | [diff] [blame] | 116 | rt2x00queue_flush_queues(rt2x00dev, true); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 117 | |
| 118 | /* |
| 119 | * Disable radio. |
| 120 | */ |
| 121 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); |
Ivo van Doorn | 2b08da3 | 2008-06-03 18:58:56 +0200 | [diff] [blame] | 122 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 123 | rt2x00led_led_activity(rt2x00dev, false); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 124 | rt2x00leds_led_radio(rt2x00dev, false); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 125 | } |
| 126 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 127 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
| 128 | struct ieee80211_vif *vif) |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 129 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 130 | struct rt2x00_dev *rt2x00dev = data; |
| 131 | struct rt2x00_intf *intf = vif_to_intf(vif); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 132 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 133 | /* |
| 134 | * It is possible the radio was disabled while the work had been |
| 135 | * scheduled. If that happens we should return here immediately, |
| 136 | * note that in the spinlock protected area above the delayed_flags |
| 137 | * have been cleared correctly. |
| 138 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 139 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 140 | return; |
| 141 | |
Helmut Schaa | bfe6a15 | 2010-12-27 15:06:57 +0100 | [diff] [blame] | 142 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) |
Helmut Schaa | 69cf36a | 2011-01-30 13:16:03 +0100 | [diff] [blame] | 143 | rt2x00queue_update_beacon(rt2x00dev, vif); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
| 147 | { |
| 148 | struct rt2x00_dev *rt2x00dev = |
| 149 | container_of(work, struct rt2x00_dev, intf_work); |
| 150 | |
| 151 | /* |
| 152 | * Iterate over each interface and perform the |
| 153 | * requested configurations. |
| 154 | */ |
| 155 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 156 | rt2x00lib_intf_scheduled_iter, |
| 157 | rt2x00dev); |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 158 | } |
| 159 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 160 | static void rt2x00lib_autowakeup(struct work_struct *work) |
| 161 | { |
| 162 | struct rt2x00_dev *rt2x00dev = |
| 163 | container_of(work, struct rt2x00_dev, autowakeup_work.work); |
| 164 | |
Stanislaw Gruszka | 3bb42a6 | 2011-06-04 16:48:54 +0200 | [diff] [blame] | 165 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 166 | return; |
| 167 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 168 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) |
| 169 | ERROR(rt2x00dev, "Device failed to wakeup.\n"); |
| 170 | clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags); |
| 171 | } |
| 172 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 173 | /* |
| 174 | * Interrupt context handlers. |
| 175 | */ |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 176 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
| 177 | struct ieee80211_vif *vif) |
| 178 | { |
| 179 | struct rt2x00_dev *rt2x00dev = data; |
| 180 | struct sk_buff *skb; |
| 181 | |
| 182 | /* |
| 183 | * Only AP mode interfaces do broad- and multicast buffering |
| 184 | */ |
| 185 | if (vif->type != NL80211_IFTYPE_AP) |
| 186 | return; |
| 187 | |
| 188 | /* |
| 189 | * Send out buffered broad- and multicast frames |
| 190 | */ |
| 191 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 192 | while (skb) { |
| 193 | rt2x00mac_tx(rt2x00dev->hw, skb); |
| 194 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 195 | } |
| 196 | } |
| 197 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 198 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
| 199 | struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 200 | { |
Helmut Schaa | 4dee32f | 2010-07-11 12:27:26 +0200 | [diff] [blame] | 201 | struct rt2x00_dev *rt2x00dev = data; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 202 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 203 | if (vif->type != NL80211_IFTYPE_AP && |
Andrey Yurovsky | a07dbea | 2008-12-20 10:55:34 +0100 | [diff] [blame] | 204 | vif->type != NL80211_IFTYPE_ADHOC && |
Ivo van Doorn | ce292a6 | 2008-12-20 10:57:02 +0100 | [diff] [blame] | 205 | vif->type != NL80211_IFTYPE_MESH_POINT && |
| 206 | vif->type != NL80211_IFTYPE_WDS) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 207 | return; |
| 208 | |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 209 | /* |
| 210 | * Update the beacon without locking. This is safe on PCI devices |
| 211 | * as they only update the beacon periodically here. This should |
| 212 | * never be called for USB devices. |
| 213 | */ |
| 214 | WARN_ON(rt2x00_is_usb(rt2x00dev)); |
| 215 | rt2x00queue_update_beacon_locked(rt2x00dev, vif); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) |
| 219 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 220 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 221 | return; |
| 222 | |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 223 | /* send buffered bc/mc frames out for every bssid */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 224 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 225 | rt2x00lib_bc_buffer_iter, |
| 226 | rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 227 | /* |
| 228 | * Devices with pre tbtt interrupt don't need to update the beacon |
| 229 | * here as they will fetch the next beacon directly prior to |
| 230 | * transmission. |
| 231 | */ |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 232 | if (test_bit(CAPABILITY_PRE_TBTT_INTERRUPT, &rt2x00dev->cap_flags)) |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 233 | return; |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 234 | |
| 235 | /* fetch next beacon */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 236 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 237 | rt2x00lib_beaconupdate_iter, |
| 238 | rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 239 | } |
| 240 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); |
| 241 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 242 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
| 243 | { |
| 244 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 245 | return; |
| 246 | |
| 247 | /* fetch next beacon */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 248 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 249 | rt2x00lib_beaconupdate_iter, |
| 250 | rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 251 | } |
| 252 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); |
| 253 | |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 254 | void rt2x00lib_dmastart(struct queue_entry *entry) |
| 255 | { |
| 256 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 257 | rt2x00queue_index_inc(entry, Q_INDEX); |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 258 | } |
| 259 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); |
| 260 | |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 261 | void rt2x00lib_dmadone(struct queue_entry *entry) |
| 262 | { |
Ivo van Doorn | dba5dc1 | 2010-12-13 12:36:18 +0100 | [diff] [blame] | 263 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
Ivo van Doorn | a13c8f3 | 2010-10-11 15:39:48 +0200 | [diff] [blame] | 264 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 265 | rt2x00queue_index_inc(entry, Q_INDEX_DMA_DONE); |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 266 | } |
| 267 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); |
| 268 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 269 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 270 | struct txdone_entry_desc *txdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 271 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 272 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 273 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 274 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 275 | unsigned int header_length, i; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 276 | u8 rate_idx, rate_flags, retry_rates; |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 277 | u8 skbdesc_flags = skbdesc->flags; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 278 | bool success; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 279 | |
| 280 | /* |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 281 | * Unmap the skb. |
| 282 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 283 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 284 | |
| 285 | /* |
| 286 | * Remove the extra tx headroom from the skb. |
| 287 | */ |
| 288 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); |
| 289 | |
| 290 | /* |
| 291 | * Signal that the TX descriptor is no longer in the skb. |
| 292 | */ |
| 293 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; |
| 294 | |
| 295 | /* |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 296 | * Determine the length of 802.11 header. |
| 297 | */ |
| 298 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
| 299 | |
| 300 | /* |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 301 | * Remove L2 padding which was added during |
| 302 | */ |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 303 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 304 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 305 | |
| 306 | /* |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 307 | * If the IV/EIV data was stripped from the frame before it was |
| 308 | * passed to the hardware, we should now reinsert it again because |
Walter Goldens | 77c2061 | 2010-05-18 04:44:54 -0700 | [diff] [blame] | 309 | * mac80211 will expect the same data to be present it the |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 310 | * frame as it was passed to us. |
| 311 | */ |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 312 | if (test_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags)) |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 313 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 314 | |
| 315 | /* |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 316 | * Send frame to debugfs immediately, after this call is completed |
| 317 | * we are going to overwrite the skb->cb array. |
| 318 | */ |
| 319 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 320 | |
| 321 | /* |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 322 | * Determine if the frame has been successfully transmitted. |
| 323 | */ |
| 324 | success = |
| 325 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
Helmut Schaa | fd6dcb8 | 2010-06-14 22:09:09 +0200 | [diff] [blame] | 326 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 327 | |
| 328 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 329 | * Update TX statistics. |
| 330 | */ |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 331 | rt2x00dev->link.qual.tx_success += success; |
| 332 | rt2x00dev->link.qual.tx_failed += !success; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 333 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 334 | rate_idx = skbdesc->tx_rate_idx; |
| 335 | rate_flags = skbdesc->tx_rate_flags; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 336 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
| 337 | (txdesc->retry + 1) : 1; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 338 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 339 | /* |
| 340 | * Initialize TX status |
| 341 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 342 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
| 343 | tx_info->status.ack_signal = 0; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 344 | |
| 345 | /* |
| 346 | * Frame was send with retries, hardware tried |
| 347 | * different rates to send out the frame, at each |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 348 | * retry it lowered the rate 1 step except when the |
| 349 | * lowest rate was used. |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 350 | */ |
| 351 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { |
| 352 | tx_info->status.rates[i].idx = rate_idx - i; |
| 353 | tx_info->status.rates[i].flags = rate_flags; |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 354 | |
| 355 | if (rate_idx - i == 0) { |
| 356 | /* |
| 357 | * The lowest rate (index 0) was used until the |
| 358 | * number of max retries was reached. |
| 359 | */ |
| 360 | tx_info->status.rates[i].count = retry_rates - i; |
| 361 | i++; |
| 362 | break; |
| 363 | } |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 364 | tx_info->status.rates[i].count = 1; |
| 365 | } |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 366 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 367 | tx_info->status.rates[i].idx = -1; /* terminate */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 368 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 369 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 370 | if (success) |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 371 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 372 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 373 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 374 | } |
| 375 | |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 376 | /* |
| 377 | * Every single frame has it's own tx status, hence report |
| 378 | * every frame as ampdu of size 1. |
| 379 | * |
| 380 | * TODO: if we can find out how many frames were aggregated |
| 381 | * by the hw we could provide the real ampdu_len to mac80211 |
| 382 | * which would allow the rc algorithm to better decide on |
| 383 | * which rates are suitable. |
| 384 | */ |
Helmut Schaa | f16d2db | 2011-03-28 13:35:21 +0200 | [diff] [blame] | 385 | if (test_bit(TXDONE_AMPDU, &txdesc->flags) || |
| 386 | tx_info->flags & IEEE80211_TX_CTL_AMPDU) { |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 387 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; |
| 388 | tx_info->status.ampdu_len = 1; |
| 389 | tx_info->status.ampdu_ack_len = success ? 1 : 0; |
Helmut Schaa | f16d2db | 2011-03-28 13:35:21 +0200 | [diff] [blame] | 390 | |
| 391 | if (!success) |
| 392 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 393 | } |
| 394 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 395 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 396 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 397 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 398 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 399 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | /* |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 403 | * Only send the status report to mac80211 when it's a frame |
| 404 | * that originated in mac80211. If this was a extra frame coming |
| 405 | * through a mac80211 library call (RTS/CTS) then we should not |
| 406 | * send the status report back. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 407 | */ |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 408 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 409 | if (test_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags)) |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 410 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
| 411 | else |
| 412 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); |
| 413 | } else |
Helmut Schaa | 78e256c | 2010-07-11 12:26:48 +0200 | [diff] [blame] | 414 | dev_kfree_skb_any(entry->skb); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 415 | |
| 416 | /* |
| 417 | * Make this entry available for reuse. |
| 418 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 419 | entry->skb = NULL; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 420 | entry->flags = 0; |
| 421 | |
Ivo van Doorn | 798b7ad | 2008-11-08 15:25:33 +0100 | [diff] [blame] | 422 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 423 | |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 424 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 425 | |
| 426 | /* |
| 427 | * If the data queue was below the threshold before the txdone |
| 428 | * handler we must make sure the packet queue in the mac80211 stack |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame^] | 429 | * is reenabled when the txdone handler has finished. This has to be |
| 430 | * serialized with rt2x00mac_tx(), otherwise we can wake up queue |
| 431 | * before it was stopped. |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 432 | */ |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame^] | 433 | spin_lock_bh(&entry->queue->tx_lock); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 434 | if (!rt2x00queue_threshold(entry->queue)) |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 435 | rt2x00queue_unpause_queue(entry->queue); |
Stanislaw Gruszka | 3780d03 | 2012-03-09 12:39:54 +0100 | [diff] [blame^] | 436 | spin_unlock_bh(&entry->queue->tx_lock); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 437 | } |
| 438 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); |
| 439 | |
Ivo van Doorn | 3392bec | 2010-08-06 20:46:53 +0200 | [diff] [blame] | 440 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) |
| 441 | { |
| 442 | struct txdone_entry_desc txdesc; |
| 443 | |
| 444 | txdesc.flags = 0; |
| 445 | __set_bit(status, &txdesc.flags); |
| 446 | txdesc.retry = 0; |
| 447 | |
| 448 | rt2x00lib_txdone(entry, &txdesc); |
| 449 | } |
| 450 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); |
| 451 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 452 | static u8 *rt2x00lib_find_ie(u8 *data, unsigned int len, u8 ie) |
| 453 | { |
| 454 | struct ieee80211_mgmt *mgmt = (void *)data; |
| 455 | u8 *pos, *end; |
| 456 | |
| 457 | pos = (u8 *)mgmt->u.beacon.variable; |
| 458 | end = data + len; |
| 459 | while (pos < end) { |
| 460 | if (pos + 2 + pos[1] > end) |
| 461 | return NULL; |
| 462 | |
| 463 | if (pos[0] == ie) |
| 464 | return pos; |
| 465 | |
| 466 | pos += 2 + pos[1]; |
| 467 | } |
| 468 | |
| 469 | return NULL; |
| 470 | } |
| 471 | |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 472 | static void rt2x00lib_sleep(struct work_struct *work) |
| 473 | { |
| 474 | struct rt2x00_dev *rt2x00dev = |
| 475 | container_of(work, struct rt2x00_dev, sleep_work); |
| 476 | |
| 477 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 478 | return; |
| 479 | |
| 480 | /* |
| 481 | * Check again is powersaving is enabled, to prevent races from delayed |
| 482 | * work execution. |
| 483 | */ |
| 484 | if (!test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) |
| 485 | rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, |
| 486 | IEEE80211_CONF_CHANGE_PS); |
| 487 | } |
| 488 | |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 489 | static void rt2x00lib_rxdone_check_ps(struct rt2x00_dev *rt2x00dev, |
| 490 | struct sk_buff *skb, |
| 491 | struct rxdone_entry_desc *rxdesc) |
| 492 | { |
| 493 | struct ieee80211_hdr *hdr = (void *) skb->data; |
| 494 | struct ieee80211_tim_ie *tim_ie; |
| 495 | u8 *tim; |
| 496 | u8 tim_len; |
| 497 | bool cam; |
| 498 | |
| 499 | /* If this is not a beacon, or if mac80211 has no powersaving |
| 500 | * configured, or if the device is already in powersaving mode |
| 501 | * we can exit now. */ |
| 502 | if (likely(!ieee80211_is_beacon(hdr->frame_control) || |
| 503 | !(rt2x00dev->hw->conf.flags & IEEE80211_CONF_PS))) |
| 504 | return; |
| 505 | |
| 506 | /* min. beacon length + FCS_LEN */ |
| 507 | if (skb->len <= 40 + FCS_LEN) |
| 508 | return; |
| 509 | |
| 510 | /* and only beacons from the associated BSSID, please */ |
| 511 | if (!(rxdesc->dev_flags & RXDONE_MY_BSS) || |
| 512 | !rt2x00dev->aid) |
| 513 | return; |
| 514 | |
| 515 | rt2x00dev->last_beacon = jiffies; |
| 516 | |
| 517 | tim = rt2x00lib_find_ie(skb->data, skb->len - FCS_LEN, WLAN_EID_TIM); |
| 518 | if (!tim) |
| 519 | return; |
| 520 | |
| 521 | if (tim[1] < sizeof(*tim_ie)) |
| 522 | return; |
| 523 | |
| 524 | tim_len = tim[1]; |
| 525 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; |
| 526 | |
| 527 | /* Check whenever the PHY can be turned off again. */ |
| 528 | |
| 529 | /* 1. What about buffered unicast traffic for our AID? */ |
| 530 | cam = ieee80211_check_tim(tim_ie, tim_len, rt2x00dev->aid); |
| 531 | |
| 532 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ |
| 533 | cam |= (tim_ie->bitmap_ctrl & 0x01); |
| 534 | |
| 535 | if (!cam && !test_bit(CONFIG_POWERSAVING, &rt2x00dev->flags)) |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 536 | queue_work(rt2x00dev->workqueue, &rt2x00dev->sleep_work); |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 537 | } |
| 538 | |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 539 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
| 540 | struct rxdone_entry_desc *rxdesc) |
| 541 | { |
| 542 | struct ieee80211_supported_band *sband; |
| 543 | const struct rt2x00_rate *rate; |
| 544 | unsigned int i; |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 545 | int signal = rxdesc->signal; |
| 546 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 547 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 548 | switch (rxdesc->rate_mode) { |
| 549 | case RATE_MODE_CCK: |
| 550 | case RATE_MODE_OFDM: |
| 551 | /* |
| 552 | * For non-HT rates the MCS value needs to contain the |
| 553 | * actually used rate modulation (CCK or OFDM). |
| 554 | */ |
| 555 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) |
| 556 | signal = RATE_MCS(rxdesc->rate_mode, signal); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 557 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 558 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
| 559 | for (i = 0; i < sband->n_bitrates; i++) { |
| 560 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
| 561 | if (((type == RXDONE_SIGNAL_PLCP) && |
| 562 | (rate->plcp == signal)) || |
| 563 | ((type == RXDONE_SIGNAL_BITRATE) && |
| 564 | (rate->bitrate == signal)) || |
| 565 | ((type == RXDONE_SIGNAL_MCS) && |
| 566 | (rate->mcs == signal))) { |
| 567 | return i; |
| 568 | } |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 569 | } |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 570 | break; |
| 571 | case RATE_MODE_HT_MIX: |
| 572 | case RATE_MODE_HT_GREENFIELD: |
| 573 | if (signal >= 0 && signal <= 76) |
| 574 | return signal; |
| 575 | break; |
| 576 | default: |
| 577 | break; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 581 | "mode=0x%.4x, signal=0x%.4x, type=%d.\n", |
| 582 | rxdesc->rate_mode, signal, type); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 583 | return 0; |
| 584 | } |
| 585 | |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 586 | void rt2x00lib_rxdone(struct queue_entry *entry) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 587 | { |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 588 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 589 | struct rxdone_entry_desc rxdesc; |
| 590 | struct sk_buff *skb; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 591 | struct ieee80211_rx_status *rx_status; |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 592 | unsigned int header_length; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 593 | int rate_idx; |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 594 | |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 595 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
| 596 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 597 | goto submit_entry; |
| 598 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 599 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
| 600 | goto submit_entry; |
| 601 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 602 | /* |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 603 | * Allocate a new sk_buffer. If no new buffer available, drop the |
| 604 | * received frame and reuse the existing buffer. |
| 605 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 606 | skb = rt2x00queue_alloc_rxskb(entry); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 607 | if (!skb) |
Ivo van Doorn | 1550c8e | 2010-10-11 15:38:26 +0200 | [diff] [blame] | 608 | goto submit_entry; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 609 | |
| 610 | /* |
| 611 | * Unmap the skb. |
| 612 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 613 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 614 | |
| 615 | /* |
| 616 | * Extract the RXD details. |
| 617 | */ |
| 618 | memset(&rxdesc, 0, sizeof(rxdesc)); |
| 619 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 620 | |
| 621 | /* |
Stanislaw Gruszka | 7f503fc | 2011-06-19 19:46:02 +0200 | [diff] [blame] | 622 | * Check for valid size in case we get corrupted descriptor from |
| 623 | * hardware. |
| 624 | */ |
| 625 | if (unlikely(rxdesc.size == 0 || |
| 626 | rxdesc.size > entry->queue->data_size)) { |
| 627 | WARNING(rt2x00dev, "Wrong frame size %d max %d.\n", |
| 628 | rxdesc.size, entry->queue->data_size); |
| 629 | dev_kfree_skb(entry->skb); |
| 630 | goto renew_skb; |
| 631 | } |
| 632 | |
| 633 | /* |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 634 | * The data behind the ieee80211 header must be |
Gertjan van Wingerde | a9f853d | 2008-06-07 16:57:09 +0200 | [diff] [blame] | 635 | * aligned on a 4 byte boundary. |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 636 | */ |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 637 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 638 | |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 639 | /* |
| 640 | * Hardware might have stripped the IV/EIV/ICV data, |
| 641 | * in that case it is possible that the data was |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 642 | * provided separately (through hardware descriptor) |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 643 | * in which case we should reinsert the data into the frame. |
| 644 | */ |
Ivo van Doorn | 74415ed | 2008-12-02 22:50:33 +0100 | [diff] [blame] | 645 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 646 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 647 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 648 | &rxdesc); |
Gertjan van Wingerde | b734083 | 2009-12-04 23:47:04 +0100 | [diff] [blame] | 649 | else if (header_length && |
| 650 | (rxdesc.size > header_length) && |
| 651 | (rxdesc.dev_flags & RXDONE_L2PAD)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 652 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 653 | |
Alban Browaeys | 1398d45 | 2009-12-04 23:47:00 +0100 | [diff] [blame] | 654 | /* Trim buffer to correct size */ |
| 655 | skb_trim(entry->skb, rxdesc.size); |
| 656 | |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 657 | /* |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 658 | * Translate the signal to the correct bitrate index. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 659 | */ |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 660 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
| 661 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || |
| 662 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 663 | rxdesc.flags |= RX_FLAG_HT; |
Ivo van Doorn | 866a050 | 2008-03-25 14:12:45 +0100 | [diff] [blame] | 664 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 665 | /* |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 666 | * Check if this is a beacon, and more frames have been |
| 667 | * buffered while we were in powersaving mode. |
| 668 | */ |
| 669 | rt2x00lib_rxdone_check_ps(rt2x00dev, entry->skb, &rxdesc); |
| 670 | |
| 671 | /* |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 672 | * Update extra components |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 673 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 674 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
| 675 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 676 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 677 | |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 678 | /* |
| 679 | * Initialize RX status information, and send frame |
| 680 | * to mac80211. |
| 681 | */ |
| 682 | rx_status = IEEE80211_SKB_RXCB(entry->skb); |
Ivo van Doorn | ae73e58 | 2008-07-04 16:14:59 +0200 | [diff] [blame] | 683 | rx_status->mactime = rxdesc.timestamp; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 684 | rx_status->band = rt2x00dev->curr_band; |
| 685 | rx_status->freq = rt2x00dev->curr_freq; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 686 | rx_status->rate_idx = rate_idx; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 687 | rx_status->signal = rxdesc.rssi; |
| 688 | rx_status->flag = rxdesc.flags; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 689 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 690 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 691 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 692 | |
Stanislaw Gruszka | 7f503fc | 2011-06-19 19:46:02 +0200 | [diff] [blame] | 693 | renew_skb: |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 694 | /* |
| 695 | * Replace the skb with the freshly allocated one. |
| 696 | */ |
| 697 | entry->skb = skb; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 698 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 699 | submit_entry: |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 700 | entry->flags = 0; |
Johannes Stezenbach | 75256f0 | 2011-04-18 15:29:38 +0200 | [diff] [blame] | 701 | rt2x00queue_index_inc(entry, Q_INDEX_DONE); |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 702 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 703 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 704 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 705 | } |
| 706 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); |
| 707 | |
| 708 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 709 | * Driver initialization handlers. |
| 710 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 711 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
| 712 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 713 | .flags = DEV_RATE_CCK, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 714 | .bitrate = 10, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 715 | .ratemask = BIT(0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 716 | .plcp = 0x00, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 717 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 718 | }, |
| 719 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 720 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 721 | .bitrate = 20, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 722 | .ratemask = BIT(1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 723 | .plcp = 0x01, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 724 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 725 | }, |
| 726 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 727 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 728 | .bitrate = 55, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 729 | .ratemask = BIT(2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 730 | .plcp = 0x02, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 731 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 732 | }, |
| 733 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 734 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 735 | .bitrate = 110, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 736 | .ratemask = BIT(3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 737 | .plcp = 0x03, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 738 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 739 | }, |
| 740 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 741 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 742 | .bitrate = 60, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 743 | .ratemask = BIT(4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 744 | .plcp = 0x0b, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 745 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 746 | }, |
| 747 | { |
| 748 | .flags = DEV_RATE_OFDM, |
| 749 | .bitrate = 90, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 750 | .ratemask = BIT(5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 751 | .plcp = 0x0f, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 752 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 753 | }, |
| 754 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 755 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 756 | .bitrate = 120, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 757 | .ratemask = BIT(6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 758 | .plcp = 0x0a, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 759 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 760 | }, |
| 761 | { |
| 762 | .flags = DEV_RATE_OFDM, |
| 763 | .bitrate = 180, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 764 | .ratemask = BIT(7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 765 | .plcp = 0x0e, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 766 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 767 | }, |
| 768 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 769 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 770 | .bitrate = 240, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 771 | .ratemask = BIT(8), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 772 | .plcp = 0x09, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 773 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 774 | }, |
| 775 | { |
| 776 | .flags = DEV_RATE_OFDM, |
| 777 | .bitrate = 360, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 778 | .ratemask = BIT(9), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 779 | .plcp = 0x0d, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 780 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 781 | }, |
| 782 | { |
| 783 | .flags = DEV_RATE_OFDM, |
| 784 | .bitrate = 480, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 785 | .ratemask = BIT(10), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 786 | .plcp = 0x08, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 787 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 788 | }, |
| 789 | { |
| 790 | .flags = DEV_RATE_OFDM, |
| 791 | .bitrate = 540, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 792 | .ratemask = BIT(11), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 793 | .plcp = 0x0c, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 794 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 795 | }, |
| 796 | }; |
| 797 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 798 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
| 799 | const int channel, const int tx_power, |
| 800 | const int value) |
| 801 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 802 | /* XXX: this assumption about the band is wrong for 802.11j */ |
| 803 | entry->band = channel <= 14 ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
| 804 | entry->center_freq = ieee80211_channel_to_frequency(channel, |
| 805 | entry->band); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 806 | entry->hw_value = value; |
| 807 | entry->max_power = tx_power; |
| 808 | entry->max_antenna_gain = 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | static void rt2x00lib_rate(struct ieee80211_rate *entry, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 812 | const u16 index, const struct rt2x00_rate *rate) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 813 | { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 814 | entry->flags = 0; |
| 815 | entry->bitrate = rate->bitrate; |
Mark Einon | c2361ba | 2010-11-06 15:46:36 +0100 | [diff] [blame] | 816 | entry->hw_value = index; |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 817 | entry->hw_value_short = index; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 818 | |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 819 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 820 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, |
| 824 | struct hw_mode_spec *spec) |
| 825 | { |
| 826 | struct ieee80211_hw *hw = rt2x00dev->hw; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 827 | struct ieee80211_channel *channels; |
| 828 | struct ieee80211_rate *rates; |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 829 | unsigned int num_rates; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 830 | unsigned int i; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 831 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 832 | num_rates = 0; |
| 833 | if (spec->supported_rates & SUPPORT_RATE_CCK) |
| 834 | num_rates += 4; |
| 835 | if (spec->supported_rates & SUPPORT_RATE_OFDM) |
| 836 | num_rates += 8; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 837 | |
Thomas Meyer | 839fafb | 2011-11-29 22:08:00 +0100 | [diff] [blame] | 838 | channels = kcalloc(spec->num_channels, sizeof(*channels), GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 839 | if (!channels) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 840 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 841 | |
Thomas Meyer | 839fafb | 2011-11-29 22:08:00 +0100 | [diff] [blame] | 842 | rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 843 | if (!rates) |
| 844 | goto exit_free_channels; |
| 845 | |
| 846 | /* |
| 847 | * Initialize Rate list. |
| 848 | */ |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 849 | for (i = 0; i < num_rates; i++) |
Ivo van Doorn | 8f5fa7f | 2008-02-03 15:54:34 +0100 | [diff] [blame] | 850 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 851 | |
| 852 | /* |
| 853 | * Initialize Channel list. |
| 854 | */ |
| 855 | for (i = 0; i < spec->num_channels; i++) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 856 | rt2x00lib_channel(&channels[i], |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 857 | spec->channels[i].channel, |
Ivo van Doorn | 8d1331b | 2010-08-23 19:56:07 +0200 | [diff] [blame] | 858 | spec->channels_info[i].max_power, i); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 859 | } |
| 860 | |
| 861 | /* |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 862 | * Intitialize 802.11b, 802.11g |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 863 | * Rates: CCK, OFDM. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 864 | * Channels: 2.4 GHz |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 865 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 866 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 867 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
| 868 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; |
| 869 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; |
| 870 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; |
| 871 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 872 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 873 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
| 874 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | /* |
| 878 | * Intitialize 802.11a |
| 879 | * Rates: OFDM. |
| 880 | * Channels: OFDM, UNII, HiperLAN2. |
| 881 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 882 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 883 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
| 884 | spec->num_channels - 14; |
| 885 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = |
| 886 | num_rates - 4; |
| 887 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; |
| 888 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; |
| 889 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 890 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 891 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
| 892 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 893 | } |
| 894 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 895 | return 0; |
| 896 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 897 | exit_free_channels: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 898 | kfree(channels); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 899 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
| 900 | return -ENOMEM; |
| 901 | } |
| 902 | |
| 903 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) |
| 904 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 905 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 906 | ieee80211_unregister_hw(rt2x00dev->hw); |
| 907 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 908 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
| 909 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); |
| 910 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); |
| 911 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; |
| 912 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 913 | } |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 914 | |
| 915 | kfree(rt2x00dev->spec.channels_info); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) |
| 919 | { |
| 920 | struct hw_mode_spec *spec = &rt2x00dev->spec; |
| 921 | int status; |
| 922 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 923 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
| 924 | return 0; |
| 925 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 926 | /* |
| 927 | * Initialize HW modes. |
| 928 | */ |
| 929 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); |
| 930 | if (status) |
| 931 | return status; |
| 932 | |
| 933 | /* |
Gertjan van Wingerde | 61448f8 | 2008-05-10 13:43:33 +0200 | [diff] [blame] | 934 | * Initialize HW fields. |
| 935 | */ |
| 936 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; |
| 937 | |
| 938 | /* |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 939 | * Initialize extra TX headroom required. |
| 940 | */ |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 941 | rt2x00dev->hw->extra_tx_headroom = |
| 942 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, |
| 943 | rt2x00dev->ops->extra_tx_headroom); |
| 944 | |
| 945 | /* |
| 946 | * Take TX headroom required for alignment into account. |
| 947 | */ |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 948 | if (test_bit(REQUIRE_L2PAD, &rt2x00dev->cap_flags)) |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 949 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 950 | else if (test_bit(REQUIRE_DMA, &rt2x00dev->cap_flags)) |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 951 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 952 | |
| 953 | /* |
Helmut Schaa | b4943d8 | 2011-09-08 14:36:04 +0200 | [diff] [blame] | 954 | * Tell mac80211 about the size of our private STA structure. |
| 955 | */ |
| 956 | rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta); |
| 957 | |
| 958 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 959 | * Allocate tx status FIFO for driver use. |
| 960 | */ |
Ivo van Doorn | 7dab73b | 2011-04-18 15:27:06 +0200 | [diff] [blame] | 961 | if (test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags)) { |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 962 | /* |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 963 | * Allocate the txstatus fifo. In the worst case the tx |
| 964 | * status fifo has to hold the tx status of all entries |
| 965 | * in all tx queues. Hence, calculate the kfifo size as |
| 966 | * tx_queues * entry_num and round up to the nearest |
| 967 | * power of 2. |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 968 | */ |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame] | 969 | int kfifo_size = |
| 970 | roundup_pow_of_two(rt2x00dev->ops->tx_queues * |
| 971 | rt2x00dev->ops->tx->entry_num * |
| 972 | sizeof(u32)); |
| 973 | |
| 974 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size, |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 975 | GFP_KERNEL); |
| 976 | if (status) |
| 977 | return status; |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 978 | } |
| 979 | |
| 980 | /* |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 981 | * Initialize tasklets if used by the driver. Tasklets are |
| 982 | * disabled until the interrupts are turned on. The driver |
| 983 | * has to handle that. |
| 984 | */ |
| 985 | #define RT2X00_TASKLET_INIT(taskletname) \ |
| 986 | if (rt2x00dev->ops->lib->taskletname) { \ |
| 987 | tasklet_init(&rt2x00dev->taskletname, \ |
| 988 | rt2x00dev->ops->lib->taskletname, \ |
| 989 | (unsigned long)rt2x00dev); \ |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 990 | } |
| 991 | |
Helmut Schaa | c8e15a1 | 2011-01-30 13:18:13 +0100 | [diff] [blame] | 992 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 993 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
| 994 | RT2X00_TASKLET_INIT(tbtt_tasklet); |
| 995 | RT2X00_TASKLET_INIT(rxdone_tasklet); |
| 996 | RT2X00_TASKLET_INIT(autowake_tasklet); |
| 997 | |
| 998 | #undef RT2X00_TASKLET_INIT |
| 999 | |
| 1000 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1001 | * Register HW. |
| 1002 | */ |
| 1003 | status = ieee80211_register_hw(rt2x00dev->hw); |
Herton Ronaldo Krzesinski | f05faa3 | 2009-04-10 18:05:14 -0300 | [diff] [blame] | 1004 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1005 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1006 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1007 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1008 | |
| 1009 | return 0; |
| 1010 | } |
| 1011 | |
| 1012 | /* |
| 1013 | * Initialization/uninitialization handlers. |
| 1014 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1015 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1016 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1017 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1018 | return; |
| 1019 | |
| 1020 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1021 | * Unregister extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1022 | */ |
| 1023 | rt2x00rfkill_unregister(rt2x00dev); |
| 1024 | |
| 1025 | /* |
| 1026 | * Allow the HW to uninitialize. |
| 1027 | */ |
| 1028 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); |
| 1029 | |
| 1030 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1031 | * Free allocated queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1032 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1033 | rt2x00queue_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1034 | } |
| 1035 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1036 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1037 | { |
| 1038 | int status; |
| 1039 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1040 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1041 | return 0; |
| 1042 | |
| 1043 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1044 | * Allocate all queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1045 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1046 | status = rt2x00queue_initialize(rt2x00dev); |
| 1047 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1048 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1049 | |
| 1050 | /* |
| 1051 | * Initialize the device. |
| 1052 | */ |
| 1053 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); |
Ivo van Doorn | ed49998 | 2008-05-05 17:23:47 +0200 | [diff] [blame] | 1054 | if (status) { |
| 1055 | rt2x00queue_uninitialize(rt2x00dev); |
| 1056 | return status; |
| 1057 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1058 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1059 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1060 | |
| 1061 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1062 | * Register the extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1063 | */ |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1064 | rt2x00rfkill_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1065 | |
| 1066 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1067 | } |
| 1068 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1069 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
| 1070 | { |
| 1071 | int retval; |
| 1072 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1073 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1074 | return 0; |
| 1075 | |
| 1076 | /* |
| 1077 | * If this is the first interface which is added, |
| 1078 | * we should load the firmware now. |
| 1079 | */ |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 1080 | retval = rt2x00lib_load_firmware(rt2x00dev); |
| 1081 | if (retval) |
| 1082 | return retval; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1083 | |
| 1084 | /* |
| 1085 | * Initialize the device. |
| 1086 | */ |
| 1087 | retval = rt2x00lib_initialize(rt2x00dev); |
| 1088 | if (retval) |
| 1089 | return retval; |
| 1090 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1091 | rt2x00dev->intf_ap_count = 0; |
| 1092 | rt2x00dev->intf_sta_count = 0; |
| 1093 | rt2x00dev->intf_associated = 0; |
| 1094 | |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1095 | /* Enable the radio */ |
| 1096 | retval = rt2x00lib_enable_radio(rt2x00dev); |
Helmut Schaa | 1f0280c | 2010-10-02 11:34:05 +0200 | [diff] [blame] | 1097 | if (retval) |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1098 | return retval; |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 1099 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1100 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1101 | |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |
| 1106 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1107 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1108 | return; |
| 1109 | |
| 1110 | /* |
| 1111 | * Perhaps we can add something smarter here, |
| 1112 | * but for now just disabling the radio should do. |
| 1113 | */ |
| 1114 | rt2x00lib_disable_radio(rt2x00dev); |
| 1115 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1116 | rt2x00dev->intf_ap_count = 0; |
| 1117 | rt2x00dev->intf_sta_count = 0; |
| 1118 | rt2x00dev->intf_associated = 0; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1119 | } |
| 1120 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1121 | /* |
| 1122 | * driver allocation handlers. |
| 1123 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1124 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
| 1125 | { |
| 1126 | int retval = -ENOMEM; |
| 1127 | |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 1128 | spin_lock_init(&rt2x00dev->irqmask_lock); |
Ivo van Doorn | 8ff48a8 | 2008-11-09 23:40:46 +0100 | [diff] [blame] | 1129 | mutex_init(&rt2x00dev->csr_mutex); |
| 1130 | |
Sean Cross | 66f84d6 | 2009-11-05 20:22:03 +0100 | [diff] [blame] | 1131 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
| 1132 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1133 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1134 | * Make room for rt2x00_intf inside the per-interface |
| 1135 | * structure ieee80211_vif. |
| 1136 | */ |
| 1137 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); |
| 1138 | |
Ivo van Doorn | 3514a44 | 2008-10-29 17:18:46 +0100 | [diff] [blame] | 1139 | /* |
| 1140 | * Determine which operating modes are supported, all modes |
| 1141 | * which require beaconing, depend on the availability of |
| 1142 | * beacon entries. |
| 1143 | */ |
| 1144 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
| 1145 | if (rt2x00dev->ops->bcn->entry_num > 0) |
| 1146 | rt2x00dev->hw->wiphy->interface_modes |= |
| 1147 | BIT(NL80211_IFTYPE_ADHOC) | |
Andrey Yurovsky | a07dbea | 2008-12-20 10:55:34 +0100 | [diff] [blame] | 1148 | BIT(NL80211_IFTYPE_AP) | |
Ivo van Doorn | ce292a6 | 2008-12-20 10:57:02 +0100 | [diff] [blame] | 1149 | BIT(NL80211_IFTYPE_MESH_POINT) | |
| 1150 | BIT(NL80211_IFTYPE_WDS); |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1151 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1152 | /* |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1153 | * Initialize work. |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1154 | */ |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1155 | rt2x00dev->workqueue = |
| 1156 | alloc_ordered_workqueue(wiphy_name(rt2x00dev->hw->wiphy), 0); |
| 1157 | if (!rt2x00dev->workqueue) { |
| 1158 | retval = -ENOMEM; |
| 1159 | goto exit; |
| 1160 | } |
| 1161 | |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1162 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
Ivo van Doorn | 1c0bcf8 | 2011-04-30 17:18:18 +0200 | [diff] [blame] | 1163 | INIT_DELAYED_WORK(&rt2x00dev->autowakeup_work, rt2x00lib_autowakeup); |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 1164 | INIT_WORK(&rt2x00dev->sleep_work, rt2x00lib_sleep); |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1165 | |
| 1166 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1167 | * Let the driver probe the device to detect the capabilities. |
| 1168 | */ |
| 1169 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); |
| 1170 | if (retval) { |
| 1171 | ERROR(rt2x00dev, "Failed to allocate device.\n"); |
| 1172 | goto exit; |
| 1173 | } |
| 1174 | |
| 1175 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1176 | * Allocate queue array. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1177 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1178 | retval = rt2x00queue_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1179 | if (retval) |
| 1180 | goto exit; |
| 1181 | |
| 1182 | /* |
| 1183 | * Initialize ieee80211 structure. |
| 1184 | */ |
| 1185 | retval = rt2x00lib_probe_hw(rt2x00dev); |
| 1186 | if (retval) { |
| 1187 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); |
| 1188 | goto exit; |
| 1189 | } |
| 1190 | |
| 1191 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1192 | * Register extra components. |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1193 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 1194 | rt2x00link_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1195 | rt2x00leds_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1196 | rt2x00debug_register(rt2x00dev); |
| 1197 | |
| 1198 | return 0; |
| 1199 | |
| 1200 | exit: |
| 1201 | rt2x00lib_remove_dev(rt2x00dev); |
| 1202 | |
| 1203 | return retval; |
| 1204 | } |
| 1205 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); |
| 1206 | |
| 1207 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) |
| 1208 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1209 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1210 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1211 | /* |
| 1212 | * Disable radio. |
| 1213 | */ |
| 1214 | rt2x00lib_disable_radio(rt2x00dev); |
| 1215 | |
| 1216 | /* |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1217 | * Stop all work. |
| 1218 | */ |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1219 | cancel_work_sync(&rt2x00dev->intf_work); |
Stanislaw Gruszka | 3bb42a6 | 2011-06-04 16:48:54 +0200 | [diff] [blame] | 1220 | cancel_delayed_work_sync(&rt2x00dev->autowakeup_work); |
Gertjan van Wingerde | ed66ba4 | 2011-11-12 19:10:44 +0100 | [diff] [blame] | 1221 | cancel_work_sync(&rt2x00dev->sleep_work); |
Stanislaw Gruszka | 37f4ee0 | 2011-04-04 13:50:32 +0200 | [diff] [blame] | 1222 | if (rt2x00_is_usb(rt2x00dev)) { |
Gertjan van Wingerde | 9a24af1 | 2011-05-07 17:27:46 +0200 | [diff] [blame] | 1223 | del_timer_sync(&rt2x00dev->txstatus_timer); |
Stanislaw Gruszka | 37f4ee0 | 2011-04-04 13:50:32 +0200 | [diff] [blame] | 1224 | cancel_work_sync(&rt2x00dev->rxdone_work); |
| 1225 | cancel_work_sync(&rt2x00dev->txdone_work); |
| 1226 | } |
Gabor Juhos | 7be0815 | 2012-02-16 20:44:59 +0100 | [diff] [blame] | 1227 | if (rt2x00dev->workqueue) |
| 1228 | destroy_workqueue(rt2x00dev->workqueue); |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1229 | |
| 1230 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1231 | * Free the tx status fifo. |
| 1232 | */ |
| 1233 | kfifo_free(&rt2x00dev->txstatus_fifo); |
| 1234 | |
| 1235 | /* |
| 1236 | * Kill the tx status tasklet. |
| 1237 | */ |
| 1238 | tasklet_kill(&rt2x00dev->txstatus_tasklet); |
Ivo van Doorn | e1f4e80 | 2011-01-30 13:23:42 +0100 | [diff] [blame] | 1239 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
| 1240 | tasklet_kill(&rt2x00dev->tbtt_tasklet); |
| 1241 | tasklet_kill(&rt2x00dev->rxdone_tasklet); |
| 1242 | tasklet_kill(&rt2x00dev->autowake_tasklet); |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1243 | |
| 1244 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1245 | * Uninitialize device. |
| 1246 | */ |
| 1247 | rt2x00lib_uninitialize(rt2x00dev); |
| 1248 | |
| 1249 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1250 | * Free extra components |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1251 | */ |
| 1252 | rt2x00debug_deregister(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1253 | rt2x00leds_unregister(rt2x00dev); |
| 1254 | |
| 1255 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1256 | * Free ieee80211_hw memory. |
| 1257 | */ |
| 1258 | rt2x00lib_remove_hw(rt2x00dev); |
| 1259 | |
| 1260 | /* |
| 1261 | * Free firmware image. |
| 1262 | */ |
| 1263 | rt2x00lib_free_firmware(rt2x00dev); |
| 1264 | |
| 1265 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1266 | * Free queue structures. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1267 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1268 | rt2x00queue_free(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1269 | } |
| 1270 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); |
| 1271 | |
| 1272 | /* |
| 1273 | * Device state handlers |
| 1274 | */ |
| 1275 | #ifdef CONFIG_PM |
| 1276 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) |
| 1277 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1278 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1279 | |
| 1280 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1281 | * Prevent mac80211 from accessing driver while suspended. |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1282 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1283 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 1284 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1285 | |
| 1286 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1287 | * Cleanup as much as possible. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1288 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1289 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1290 | |
| 1291 | /* |
| 1292 | * Suspend/disable extra components. |
| 1293 | */ |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1294 | rt2x00leds_suspend(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1295 | rt2x00debug_deregister(rt2x00dev); |
| 1296 | |
| 1297 | /* |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1298 | * Set device mode to sleep for power management, |
| 1299 | * on some hardware this call seems to consistently fail. |
| 1300 | * From the specifications it is hard to tell why it fails, |
| 1301 | * and if this is a "bad thing". |
| 1302 | * Overall it is safe to just ignore the failure and |
| 1303 | * continue suspending. The only downside is that the |
| 1304 | * device will not be in optimal power save mode, but with |
| 1305 | * the radio and the other components already disabled the |
| 1306 | * device is as good as disabled. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1307 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1308 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1309 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
| 1310 | "continue suspending.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1311 | |
| 1312 | return 0; |
| 1313 | } |
| 1314 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); |
| 1315 | |
| 1316 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
| 1317 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1318 | NOTICE(rt2x00dev, "Waking up.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1319 | |
| 1320 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1321 | * Restore/enable extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1322 | */ |
| 1323 | rt2x00debug_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1324 | rt2x00leds_resume(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1325 | |
| 1326 | /* |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1327 | * We are ready again to receive requests from mac80211. |
| 1328 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1329 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1330 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1331 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1332 | } |
| 1333 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); |
| 1334 | #endif /* CONFIG_PM */ |
| 1335 | |
| 1336 | /* |
| 1337 | * rt2x00lib module information. |
| 1338 | */ |
| 1339 | MODULE_AUTHOR(DRV_PROJECT); |
| 1340 | MODULE_VERSION(DRV_VERSION); |
| 1341 | MODULE_DESCRIPTION("rt2x00 library"); |
| 1342 | MODULE_LICENSE("GPL"); |