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 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 36 | * Radio control handlers. |
| 37 | */ |
| 38 | int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev) |
| 39 | { |
| 40 | int status; |
| 41 | |
| 42 | /* |
| 43 | * Don't enable the radio twice. |
| 44 | * And check if the hardware button has been disabled. |
| 45 | */ |
Ivo van Doorn | 4b9631a | 2009-07-11 18:00:19 +0200 | [diff] [blame] | 46 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 47 | return 0; |
| 48 | |
| 49 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 50 | * Initialize all data queues. |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 51 | */ |
Ivo van Doorn | 798b7ad | 2008-11-08 15:25:33 +0100 | [diff] [blame] | 52 | rt2x00queue_init_queues(rt2x00dev); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 53 | |
| 54 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 55 | * Enable radio. |
| 56 | */ |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 57 | status = |
| 58 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 59 | if (status) |
| 60 | return status; |
| 61 | |
Ivo van Doorn | 2b08da3 | 2008-06-03 18:58:56 +0200 | [diff] [blame] | 62 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON); |
| 63 | |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 64 | rt2x00leds_led_radio(rt2x00dev, true); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 65 | rt2x00led_led_activity(rt2x00dev, true); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 66 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 67 | set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 68 | |
| 69 | /* |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 70 | * Enable queues. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 71 | */ |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 72 | rt2x00queue_start_queues(rt2x00dev); |
Ivo van Doorn | ea175ee | 2010-11-06 15:48:43 +0100 | [diff] [blame] | 73 | rt2x00link_start_tuner(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 74 | |
| 75 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 76 | * Start watchdog monitoring. |
| 77 | */ |
| 78 | rt2x00link_start_watchdog(rt2x00dev); |
| 79 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 84 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 85 | if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 86 | return; |
| 87 | |
| 88 | /* |
Ivo van Doorn | c965c74 | 2010-07-11 12:25:46 +0200 | [diff] [blame] | 89 | * Stop watchdog monitoring. |
| 90 | */ |
| 91 | rt2x00link_stop_watchdog(rt2x00dev); |
| 92 | |
| 93 | /* |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 94 | * Stop all queues |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 95 | */ |
Ivo van Doorn | ea175ee | 2010-11-06 15:48:43 +0100 | [diff] [blame] | 96 | rt2x00link_stop_tuner(rt2x00dev); |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 97 | rt2x00queue_stop_queues(rt2x00dev); |
Ivo van Doorn | 5be6560 | 2010-12-13 12:35:40 +0100 | [diff] [blame] | 98 | rt2x00queue_flush_queues(rt2x00dev, true); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 99 | |
| 100 | /* |
| 101 | * Disable radio. |
| 102 | */ |
| 103 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF); |
Ivo van Doorn | 2b08da3 | 2008-06-03 18:58:56 +0200 | [diff] [blame] | 104 | rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF); |
Ivo van Doorn | 61c2b68 | 2008-04-21 19:01:09 +0200 | [diff] [blame] | 105 | rt2x00led_led_activity(rt2x00dev, false); |
Ivo van Doorn | a2e1d52 | 2008-03-31 15:53:44 +0200 | [diff] [blame] | 106 | rt2x00leds_led_radio(rt2x00dev, false); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 107 | } |
| 108 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 109 | static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac, |
| 110 | struct ieee80211_vif *vif) |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 111 | { |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 112 | struct rt2x00_dev *rt2x00dev = data; |
| 113 | struct rt2x00_intf *intf = vif_to_intf(vif); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 114 | |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 115 | /* |
| 116 | * It is possible the radio was disabled while the work had been |
| 117 | * scheduled. If that happens we should return here immediately, |
| 118 | * note that in the spinlock protected area above the delayed_flags |
| 119 | * have been cleared correctly. |
| 120 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 121 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 980dfcb | 2008-06-25 21:27:00 +0200 | [diff] [blame] | 122 | return; |
| 123 | |
Helmut Schaa | bfe6a15 | 2010-12-27 15:06:57 +0100 | [diff] [blame] | 124 | if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags)) |
Helmut Schaa | 69cf36a | 2011-01-30 13:16:03 +0100 | [diff] [blame] | 125 | rt2x00queue_update_beacon(rt2x00dev, vif); |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | static void rt2x00lib_intf_scheduled(struct work_struct *work) |
| 129 | { |
| 130 | struct rt2x00_dev *rt2x00dev = |
| 131 | container_of(work, struct rt2x00_dev, intf_work); |
| 132 | |
| 133 | /* |
| 134 | * Iterate over each interface and perform the |
| 135 | * requested configurations. |
| 136 | */ |
| 137 | ieee80211_iterate_active_interfaces(rt2x00dev->hw, |
| 138 | rt2x00lib_intf_scheduled_iter, |
| 139 | rt2x00dev); |
Ivo van Doorn | 5c58ee5 | 2007-10-06 13:34:52 +0200 | [diff] [blame] | 140 | } |
| 141 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 142 | /* |
| 143 | * Interrupt context handlers. |
| 144 | */ |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 145 | static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac, |
| 146 | struct ieee80211_vif *vif) |
| 147 | { |
| 148 | struct rt2x00_dev *rt2x00dev = data; |
| 149 | struct sk_buff *skb; |
| 150 | |
| 151 | /* |
| 152 | * Only AP mode interfaces do broad- and multicast buffering |
| 153 | */ |
| 154 | if (vif->type != NL80211_IFTYPE_AP) |
| 155 | return; |
| 156 | |
| 157 | /* |
| 158 | * Send out buffered broad- and multicast frames |
| 159 | */ |
| 160 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 161 | while (skb) { |
| 162 | rt2x00mac_tx(rt2x00dev->hw, skb); |
| 163 | skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif); |
| 164 | } |
| 165 | } |
| 166 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 167 | static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac, |
| 168 | struct ieee80211_vif *vif) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 169 | { |
Helmut Schaa | 4dee32f | 2010-07-11 12:27:26 +0200 | [diff] [blame] | 170 | struct rt2x00_dev *rt2x00dev = data; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 171 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 172 | if (vif->type != NL80211_IFTYPE_AP && |
Andrey Yurovsky | a07dbea | 2008-12-20 10:55:34 +0100 | [diff] [blame] | 173 | vif->type != NL80211_IFTYPE_ADHOC && |
Ivo van Doorn | ce292a6 | 2008-12-20 10:57:02 +0100 | [diff] [blame] | 174 | vif->type != NL80211_IFTYPE_MESH_POINT && |
| 175 | vif->type != NL80211_IFTYPE_WDS) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 176 | return; |
| 177 | |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 178 | /* |
| 179 | * Update the beacon without locking. This is safe on PCI devices |
| 180 | * as they only update the beacon periodically here. This should |
| 181 | * never be called for USB devices. |
| 182 | */ |
| 183 | WARN_ON(rt2x00_is_usb(rt2x00dev)); |
| 184 | rt2x00queue_update_beacon_locked(rt2x00dev, vif); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev) |
| 188 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 189 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 190 | return; |
| 191 | |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 192 | /* send buffered bc/mc frames out for every bssid */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 193 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 194 | rt2x00lib_bc_buffer_iter, |
| 195 | rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 196 | /* |
| 197 | * Devices with pre tbtt interrupt don't need to update the beacon |
| 198 | * here as they will fetch the next beacon directly prior to |
| 199 | * transmission. |
| 200 | */ |
| 201 | if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags)) |
| 202 | return; |
Helmut Schaa | 07896fe | 2010-07-11 12:27:58 +0200 | [diff] [blame] | 203 | |
| 204 | /* fetch next beacon */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 205 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 206 | rt2x00lib_beaconupdate_iter, |
| 207 | rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 208 | } |
| 209 | EXPORT_SYMBOL_GPL(rt2x00lib_beacondone); |
| 210 | |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 211 | void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev) |
| 212 | { |
| 213 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 214 | return; |
| 215 | |
| 216 | /* fetch next beacon */ |
Helmut Schaa | 8d59c4e | 2011-01-30 13:17:29 +0100 | [diff] [blame] | 217 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, |
| 218 | rt2x00lib_beaconupdate_iter, |
| 219 | rt2x00dev); |
Helmut Schaa | 9f926fb | 2010-07-11 12:28:23 +0200 | [diff] [blame] | 220 | } |
| 221 | EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt); |
| 222 | |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 223 | void rt2x00lib_dmastart(struct queue_entry *entry) |
| 224 | { |
| 225 | set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
| 226 | rt2x00queue_index_inc(entry->queue, Q_INDEX); |
| 227 | } |
| 228 | EXPORT_SYMBOL_GPL(rt2x00lib_dmastart); |
| 229 | |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 230 | void rt2x00lib_dmadone(struct queue_entry *entry) |
| 231 | { |
Ivo van Doorn | dba5dc1 | 2010-12-13 12:36:18 +0100 | [diff] [blame] | 232 | set_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags); |
Ivo van Doorn | a13c8f3 | 2010-10-11 15:39:48 +0200 | [diff] [blame] | 233 | clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Ivo van Doorn | 652a9dd | 2010-08-30 21:15:19 +0200 | [diff] [blame] | 234 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DMA_DONE); |
| 235 | } |
| 236 | EXPORT_SYMBOL_GPL(rt2x00lib_dmadone); |
| 237 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 238 | void rt2x00lib_txdone(struct queue_entry *entry, |
| 239 | struct txdone_entry_desc *txdesc) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 240 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 241 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 242 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 243 | struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 244 | unsigned int header_length, i; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 245 | u8 rate_idx, rate_flags, retry_rates; |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 246 | u8 skbdesc_flags = skbdesc->flags; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 247 | bool success; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 248 | |
| 249 | /* |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 250 | * Unmap the skb. |
| 251 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 252 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | e513a0b | 2010-06-29 21:41:40 +0200 | [diff] [blame] | 253 | |
| 254 | /* |
| 255 | * Remove the extra tx headroom from the skb. |
| 256 | */ |
| 257 | skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom); |
| 258 | |
| 259 | /* |
| 260 | * Signal that the TX descriptor is no longer in the skb. |
| 261 | */ |
| 262 | skbdesc->flags &= ~SKBDESC_DESC_IN_SKB; |
| 263 | |
| 264 | /* |
RA-Jay Hung | f8eaec6 | 2010-11-13 19:12:54 +0100 | [diff] [blame] | 265 | * Determine the length of 802.11 header. |
| 266 | */ |
| 267 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
| 268 | |
| 269 | /* |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 270 | * Remove L2 padding which was added during |
| 271 | */ |
| 272 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 273 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 274 | |
| 275 | /* |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 276 | * If the IV/EIV data was stripped from the frame before it was |
| 277 | * passed to the hardware, we should now reinsert it again because |
Walter Goldens | 77c2061 | 2010-05-18 04:44:54 -0700 | [diff] [blame] | 278 | * mac80211 will expect the same data to be present it the |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 279 | * frame as it was passed to us. |
| 280 | */ |
| 281 | if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 282 | rt2x00crypto_tx_insert_iv(entry->skb, header_length); |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 283 | |
| 284 | /* |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 285 | * Send frame to debugfs immediately, after this call is completed |
| 286 | * we are going to overwrite the skb->cb array. |
| 287 | */ |
| 288 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 289 | |
| 290 | /* |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 291 | * Determine if the frame has been successfully transmitted. |
| 292 | */ |
| 293 | success = |
| 294 | test_bit(TXDONE_SUCCESS, &txdesc->flags) || |
Helmut Schaa | fd6dcb8 | 2010-06-14 22:09:09 +0200 | [diff] [blame] | 295 | test_bit(TXDONE_UNKNOWN, &txdesc->flags); |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 296 | |
| 297 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 298 | * Update TX statistics. |
| 299 | */ |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 300 | rt2x00dev->link.qual.tx_success += success; |
| 301 | rt2x00dev->link.qual.tx_failed += !success; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 302 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 303 | rate_idx = skbdesc->tx_rate_idx; |
| 304 | rate_flags = skbdesc->tx_rate_flags; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 305 | retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ? |
| 306 | (txdesc->retry + 1) : 1; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 307 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 308 | /* |
| 309 | * Initialize TX status |
| 310 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 311 | memset(&tx_info->status, 0, sizeof(tx_info->status)); |
| 312 | tx_info->status.ack_signal = 0; |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 313 | |
| 314 | /* |
| 315 | * Frame was send with retries, hardware tried |
| 316 | * different rates to send out the frame, at each |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 317 | * retry it lowered the rate 1 step except when the |
| 318 | * lowest rate was used. |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 319 | */ |
| 320 | for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) { |
| 321 | tx_info->status.rates[i].idx = rate_idx - i; |
| 322 | tx_info->status.rates[i].flags = rate_flags; |
Helmut Schaa | 3d2bc10 | 2010-06-14 22:12:26 +0200 | [diff] [blame] | 323 | |
| 324 | if (rate_idx - i == 0) { |
| 325 | /* |
| 326 | * The lowest rate (index 0) was used until the |
| 327 | * number of max retries was reached. |
| 328 | */ |
| 329 | tx_info->status.rates[i].count = retry_rates - i; |
| 330 | i++; |
| 331 | break; |
| 332 | } |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 333 | tx_info->status.rates[i].count = 1; |
| 334 | } |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 335 | if (i < (IEEE80211_TX_MAX_RATES - 1)) |
Benoit PAPILLAULT | 92ed48e | 2009-08-17 18:56:10 +0200 | [diff] [blame] | 336 | tx_info->status.rates[i].idx = -1; /* terminate */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 337 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 338 | if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 339 | if (success) |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 340 | tx_info->flags |= IEEE80211_TX_STAT_ACK; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 341 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 342 | rt2x00dev->low_level_stats.dot11ACKFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 343 | } |
| 344 | |
Helmut Schaa | 1df9080 | 2010-06-29 21:38:12 +0200 | [diff] [blame] | 345 | /* |
| 346 | * Every single frame has it's own tx status, hence report |
| 347 | * every frame as ampdu of size 1. |
| 348 | * |
| 349 | * TODO: if we can find out how many frames were aggregated |
| 350 | * by the hw we could provide the real ampdu_len to mac80211 |
| 351 | * which would allow the rc algorithm to better decide on |
| 352 | * which rates are suitable. |
| 353 | */ |
| 354 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { |
| 355 | tx_info->flags |= IEEE80211_TX_STAT_AMPDU; |
| 356 | tx_info->status.ampdu_len = 1; |
| 357 | tx_info->status.ampdu_ack_len = success ? 1 : 0; |
| 358 | } |
| 359 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 360 | if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 361 | if (success) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 362 | rt2x00dev->low_level_stats.dot11RTSSuccessCount++; |
Ivo van Doorn | 2e27cff | 2009-08-29 19:10:14 +0200 | [diff] [blame] | 363 | else |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 364 | rt2x00dev->low_level_stats.dot11RTSFailureCount++; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | /* |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 368 | * Only send the status report to mac80211 when it's a frame |
| 369 | * that originated in mac80211. If this was a extra frame coming |
| 370 | * through a mac80211 library call (RTS/CTS) then we should not |
| 371 | * send the status report back. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 372 | */ |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 373 | if (!(skbdesc_flags & SKBDESC_NOT_MAC80211)) { |
| 374 | if (test_bit(DRIVER_REQUIRE_TASKLET_CONTEXT, &rt2x00dev->flags)) |
| 375 | ieee80211_tx_status(rt2x00dev->hw, entry->skb); |
| 376 | else |
| 377 | ieee80211_tx_status_ni(rt2x00dev->hw, entry->skb); |
| 378 | } else |
Helmut Schaa | 78e256c | 2010-07-11 12:26:48 +0200 | [diff] [blame] | 379 | dev_kfree_skb_any(entry->skb); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 380 | |
| 381 | /* |
| 382 | * Make this entry available for reuse. |
| 383 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 384 | entry->skb = NULL; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 385 | entry->flags = 0; |
| 386 | |
Ivo van Doorn | 798b7ad | 2008-11-08 15:25:33 +0100 | [diff] [blame] | 387 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 388 | |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 389 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
| 390 | |
| 391 | /* |
| 392 | * If the data queue was below the threshold before the txdone |
| 393 | * handler we must make sure the packet queue in the mac80211 stack |
| 394 | * is reenabled when the txdone handler has finished. |
| 395 | */ |
| 396 | if (!rt2x00queue_threshold(entry->queue)) |
Ivo van Doorn | 0b7fde5 | 2010-12-13 12:35:17 +0100 | [diff] [blame] | 397 | rt2x00queue_unpause_queue(entry->queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 398 | } |
| 399 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone); |
| 400 | |
Ivo van Doorn | 3392bec | 2010-08-06 20:46:53 +0200 | [diff] [blame] | 401 | void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status) |
| 402 | { |
| 403 | struct txdone_entry_desc txdesc; |
| 404 | |
| 405 | txdesc.flags = 0; |
| 406 | __set_bit(status, &txdesc.flags); |
| 407 | txdesc.retry = 0; |
| 408 | |
| 409 | rt2x00lib_txdone(entry, &txdesc); |
| 410 | } |
| 411 | EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo); |
| 412 | |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 413 | static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev, |
| 414 | struct rxdone_entry_desc *rxdesc) |
| 415 | { |
| 416 | struct ieee80211_supported_band *sband; |
| 417 | const struct rt2x00_rate *rate; |
| 418 | unsigned int i; |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 419 | int signal = rxdesc->signal; |
| 420 | int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 421 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 422 | switch (rxdesc->rate_mode) { |
| 423 | case RATE_MODE_CCK: |
| 424 | case RATE_MODE_OFDM: |
| 425 | /* |
| 426 | * For non-HT rates the MCS value needs to contain the |
| 427 | * actually used rate modulation (CCK or OFDM). |
| 428 | */ |
| 429 | if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS) |
| 430 | signal = RATE_MCS(rxdesc->rate_mode, signal); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 431 | |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 432 | sband = &rt2x00dev->bands[rt2x00dev->curr_band]; |
| 433 | for (i = 0; i < sband->n_bitrates; i++) { |
| 434 | rate = rt2x00_get_rate(sband->bitrates[i].hw_value); |
| 435 | if (((type == RXDONE_SIGNAL_PLCP) && |
| 436 | (rate->plcp == signal)) || |
| 437 | ((type == RXDONE_SIGNAL_BITRATE) && |
| 438 | (rate->bitrate == signal)) || |
| 439 | ((type == RXDONE_SIGNAL_MCS) && |
| 440 | (rate->mcs == signal))) { |
| 441 | return i; |
| 442 | } |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 443 | } |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 444 | break; |
| 445 | case RATE_MODE_HT_MIX: |
| 446 | case RATE_MODE_HT_GREENFIELD: |
| 447 | if (signal >= 0 && signal <= 76) |
| 448 | return signal; |
| 449 | break; |
| 450 | default: |
| 451 | break; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | WARNING(rt2x00dev, "Frame received with unrecognized signal, " |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 455 | "mode=0x%.4x, signal=0x%.4x, type=%d.\n", |
| 456 | rxdesc->rate_mode, signal, type); |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 457 | return 0; |
| 458 | } |
| 459 | |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 460 | void rt2x00lib_rxdone(struct queue_entry *entry) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 461 | { |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 462 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 463 | struct rxdone_entry_desc rxdesc; |
| 464 | struct sk_buff *skb; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 465 | struct ieee80211_rx_status *rx_status; |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 466 | unsigned int header_length; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 467 | int rate_idx; |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 468 | |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 469 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
| 470 | !test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
| 471 | goto submit_entry; |
| 472 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 473 | if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) |
| 474 | goto submit_entry; |
| 475 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 476 | /* |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 477 | * Allocate a new sk_buffer. If no new buffer available, drop the |
| 478 | * received frame and reuse the existing buffer. |
| 479 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 480 | skb = rt2x00queue_alloc_rxskb(entry); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 481 | if (!skb) |
Ivo van Doorn | 1550c8e | 2010-10-11 15:38:26 +0200 | [diff] [blame] | 482 | goto submit_entry; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 483 | |
| 484 | /* |
| 485 | * Unmap the skb. |
| 486 | */ |
Ivo van Doorn | fa69560 | 2010-10-11 15:37:25 +0200 | [diff] [blame] | 487 | rt2x00queue_unmap_skb(entry); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 488 | |
| 489 | /* |
| 490 | * Extract the RXD details. |
| 491 | */ |
| 492 | memset(&rxdesc, 0, sizeof(rxdesc)); |
| 493 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 494 | |
| 495 | /* |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 496 | * The data behind the ieee80211 header must be |
Gertjan van Wingerde | a9f853d | 2008-06-07 16:57:09 +0200 | [diff] [blame] | 497 | * aligned on a 4 byte boundary. |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 498 | */ |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 499 | header_length = ieee80211_get_hdrlen_from_skb(entry->skb); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 500 | |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 501 | /* |
| 502 | * Hardware might have stripped the IV/EIV/ICV data, |
| 503 | * in that case it is possible that the data was |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 504 | * provided separately (through hardware descriptor) |
Ivo van Doorn | 2bb057d | 2008-08-04 16:37:44 +0200 | [diff] [blame] | 505 | * in which case we should reinsert the data into the frame. |
| 506 | */ |
Ivo van Doorn | 74415ed | 2008-12-02 22:50:33 +0100 | [diff] [blame] | 507 | if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) && |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 508 | (rxdesc.flags & RX_FLAG_IV_STRIPPED)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 509 | rt2x00crypto_rx_insert_iv(entry->skb, header_length, |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 510 | &rxdesc); |
Gertjan van Wingerde | b734083 | 2009-12-04 23:47:04 +0100 | [diff] [blame] | 511 | else if (header_length && |
| 512 | (rxdesc.size > header_length) && |
| 513 | (rxdesc.dev_flags & RXDONE_L2PAD)) |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 514 | rt2x00queue_remove_l2pad(entry->skb, header_length); |
Ivo van Doorn | 9f16617 | 2009-04-26 16:08:50 +0200 | [diff] [blame] | 515 | else |
Ivo van Doorn | daee6c0 | 2009-08-29 20:30:45 +0200 | [diff] [blame] | 516 | rt2x00queue_align_payload(entry->skb, header_length); |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 517 | |
Alban Browaeys | 1398d45 | 2009-12-04 23:47:00 +0100 | [diff] [blame] | 518 | /* Trim buffer to correct size */ |
| 519 | skb_trim(entry->skb, rxdesc.size); |
| 520 | |
Gertjan van Wingerde | 239c249 | 2008-06-06 22:54:12 +0200 | [diff] [blame] | 521 | /* |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 522 | * Translate the signal to the correct bitrate index. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 523 | */ |
Ivo van Doorn | 3590eea | 2010-10-11 15:38:07 +0200 | [diff] [blame] | 524 | rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc); |
| 525 | if (rxdesc.rate_mode == RATE_MODE_HT_MIX || |
| 526 | rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD) |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 527 | rxdesc.flags |= RX_FLAG_HT; |
Ivo van Doorn | 866a050 | 2008-03-25 14:12:45 +0100 | [diff] [blame] | 528 | |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 529 | /* |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 530 | * Update extra components |
Mattias Nissler | 61af43c | 2007-11-27 21:50:26 +0100 | [diff] [blame] | 531 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 532 | rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc); |
| 533 | rt2x00debug_update_crypto(rt2x00dev, &rxdesc); |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 534 | rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb); |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 535 | |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 536 | /* |
| 537 | * Initialize RX status information, and send frame |
| 538 | * to mac80211. |
| 539 | */ |
| 540 | rx_status = IEEE80211_SKB_RXCB(entry->skb); |
Ivo van Doorn | ae73e58 | 2008-07-04 16:14:59 +0200 | [diff] [blame] | 541 | rx_status->mactime = rxdesc.timestamp; |
Ivo van Doorn | e5ef5ba | 2010-08-06 20:49:27 +0200 | [diff] [blame] | 542 | rx_status->band = rt2x00dev->curr_band; |
| 543 | rx_status->freq = rt2x00dev->curr_freq; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 544 | rx_status->rate_idx = rate_idx; |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 545 | rx_status->signal = rxdesc.rssi; |
| 546 | rx_status->flag = rxdesc.flags; |
Ivo van Doorn | 69f81a2 | 2007-10-13 16:26:36 +0200 | [diff] [blame] | 547 | rx_status->antenna = rt2x00dev->link.ant.active.rx; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 548 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 549 | ieee80211_rx_ni(rt2x00dev->hw, entry->skb); |
Gertjan van Wingerde | c4da004 | 2008-06-16 19:56:31 +0200 | [diff] [blame] | 550 | |
| 551 | /* |
| 552 | * Replace the skb with the freshly allocated one. |
| 553 | */ |
| 554 | entry->skb = skb; |
Ivo van Doorn | d74f5ba | 2008-06-16 19:56:54 +0200 | [diff] [blame] | 555 | |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 556 | submit_entry: |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 557 | entry->flags = 0; |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 558 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 559 | if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && |
Ivo van Doorn | 64e7d72 | 2010-12-13 12:36:00 +0100 | [diff] [blame] | 560 | test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
Ivo van Doorn | 070192d | 2010-11-04 20:41:05 +0100 | [diff] [blame] | 561 | rt2x00dev->ops->lib->clear_entry(entry); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 562 | } |
| 563 | EXPORT_SYMBOL_GPL(rt2x00lib_rxdone); |
| 564 | |
| 565 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 566 | * Driver initialization handlers. |
| 567 | */ |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 568 | const struct rt2x00_rate rt2x00_supported_rates[12] = { |
| 569 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 570 | .flags = DEV_RATE_CCK, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 571 | .bitrate = 10, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 572 | .ratemask = BIT(0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 573 | .plcp = 0x00, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 574 | .mcs = RATE_MCS(RATE_MODE_CCK, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 575 | }, |
| 576 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 577 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 578 | .bitrate = 20, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 579 | .ratemask = BIT(1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 580 | .plcp = 0x01, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 581 | .mcs = RATE_MCS(RATE_MODE_CCK, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 582 | }, |
| 583 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 584 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 585 | .bitrate = 55, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 586 | .ratemask = BIT(2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 587 | .plcp = 0x02, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 588 | .mcs = RATE_MCS(RATE_MODE_CCK, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 589 | }, |
| 590 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 591 | .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 592 | .bitrate = 110, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 593 | .ratemask = BIT(3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 594 | .plcp = 0x03, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 595 | .mcs = RATE_MCS(RATE_MODE_CCK, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 596 | }, |
| 597 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 598 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 599 | .bitrate = 60, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 600 | .ratemask = BIT(4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 601 | .plcp = 0x0b, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 602 | .mcs = RATE_MCS(RATE_MODE_OFDM, 0), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 603 | }, |
| 604 | { |
| 605 | .flags = DEV_RATE_OFDM, |
| 606 | .bitrate = 90, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 607 | .ratemask = BIT(5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 608 | .plcp = 0x0f, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 609 | .mcs = RATE_MCS(RATE_MODE_OFDM, 1), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 610 | }, |
| 611 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 612 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 613 | .bitrate = 120, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 614 | .ratemask = BIT(6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 615 | .plcp = 0x0a, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 616 | .mcs = RATE_MCS(RATE_MODE_OFDM, 2), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 617 | }, |
| 618 | { |
| 619 | .flags = DEV_RATE_OFDM, |
| 620 | .bitrate = 180, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 621 | .ratemask = BIT(7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 622 | .plcp = 0x0e, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 623 | .mcs = RATE_MCS(RATE_MODE_OFDM, 3), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 624 | }, |
| 625 | { |
Ivo van Doorn | 3d8606a | 2008-11-02 00:36:40 +0100 | [diff] [blame] | 626 | .flags = DEV_RATE_OFDM, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 627 | .bitrate = 240, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 628 | .ratemask = BIT(8), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 629 | .plcp = 0x09, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 630 | .mcs = RATE_MCS(RATE_MODE_OFDM, 4), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 631 | }, |
| 632 | { |
| 633 | .flags = DEV_RATE_OFDM, |
| 634 | .bitrate = 360, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 635 | .ratemask = BIT(9), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 636 | .plcp = 0x0d, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 637 | .mcs = RATE_MCS(RATE_MODE_OFDM, 5), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 638 | }, |
| 639 | { |
| 640 | .flags = DEV_RATE_OFDM, |
| 641 | .bitrate = 480, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 642 | .ratemask = BIT(10), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 643 | .plcp = 0x08, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 644 | .mcs = RATE_MCS(RATE_MODE_OFDM, 6), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 645 | }, |
| 646 | { |
| 647 | .flags = DEV_RATE_OFDM, |
| 648 | .bitrate = 540, |
Ivo van Doorn | aa77672 | 2008-03-09 22:48:08 +0100 | [diff] [blame] | 649 | .ratemask = BIT(11), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 650 | .plcp = 0x0c, |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 651 | .mcs = RATE_MCS(RATE_MODE_OFDM, 7), |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 652 | }, |
| 653 | }; |
| 654 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 655 | static void rt2x00lib_channel(struct ieee80211_channel *entry, |
| 656 | const int channel, const int tx_power, |
| 657 | const int value) |
| 658 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 659 | /* XXX: this assumption about the band is wrong for 802.11j */ |
| 660 | entry->band = channel <= 14 ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
| 661 | entry->center_freq = ieee80211_channel_to_frequency(channel, |
| 662 | entry->band); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 663 | entry->hw_value = value; |
| 664 | entry->max_power = tx_power; |
| 665 | entry->max_antenna_gain = 0xff; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | static void rt2x00lib_rate(struct ieee80211_rate *entry, |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 669 | const u16 index, const struct rt2x00_rate *rate) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 670 | { |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 671 | entry->flags = 0; |
| 672 | entry->bitrate = rate->bitrate; |
Mark Einon | c2361ba | 2010-11-06 15:46:36 +0100 | [diff] [blame] | 673 | entry->hw_value = index; |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 674 | entry->hw_value_short = index; |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 675 | |
Ivo van Doorn | 3ea9646 | 2009-01-04 17:33:25 +0100 | [diff] [blame] | 676 | if (rate->flags & DEV_RATE_SHORT_PREAMBLE) |
Ivo van Doorn | 70e2fed | 2008-02-03 15:50:40 +0100 | [diff] [blame] | 677 | entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev, |
| 681 | struct hw_mode_spec *spec) |
| 682 | { |
| 683 | struct ieee80211_hw *hw = rt2x00dev->hw; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 684 | struct ieee80211_channel *channels; |
| 685 | struct ieee80211_rate *rates; |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 686 | unsigned int num_rates; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 687 | unsigned int i; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 688 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 689 | num_rates = 0; |
| 690 | if (spec->supported_rates & SUPPORT_RATE_CCK) |
| 691 | num_rates += 4; |
| 692 | if (spec->supported_rates & SUPPORT_RATE_OFDM) |
| 693 | num_rates += 8; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 694 | |
| 695 | channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL); |
| 696 | if (!channels) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 697 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 698 | |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 699 | rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 700 | if (!rates) |
| 701 | goto exit_free_channels; |
| 702 | |
| 703 | /* |
| 704 | * Initialize Rate list. |
| 705 | */ |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 706 | for (i = 0; i < num_rates; i++) |
Ivo van Doorn | 8f5fa7f | 2008-02-03 15:54:34 +0100 | [diff] [blame] | 707 | rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 708 | |
| 709 | /* |
| 710 | * Initialize Channel list. |
| 711 | */ |
| 712 | for (i = 0; i < spec->num_channels; i++) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 713 | rt2x00lib_channel(&channels[i], |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 714 | spec->channels[i].channel, |
Ivo van Doorn | 8d1331b | 2010-08-23 19:56:07 +0200 | [diff] [blame] | 715 | spec->channels_info[i].max_power, i); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | /* |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 719 | * Intitialize 802.11b, 802.11g |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 720 | * Rates: CCK, OFDM. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 721 | * Channels: 2.4 GHz |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 722 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 723 | if (spec->supported_bands & SUPPORT_BAND_2GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 724 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14; |
| 725 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates; |
| 726 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels; |
| 727 | rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates; |
| 728 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 729 | &rt2x00dev->bands[IEEE80211_BAND_2GHZ]; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 730 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap, |
| 731 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | /* |
| 735 | * Intitialize 802.11a |
| 736 | * Rates: OFDM. |
| 737 | * Channels: OFDM, UNII, HiperLAN2. |
| 738 | */ |
Gertjan van Wingerde | 47ac268 | 2008-02-17 17:35:55 +0100 | [diff] [blame] | 739 | if (spec->supported_bands & SUPPORT_BAND_5GHZ) { |
Ivo van Doorn | 31562e8 | 2008-02-17 17:35:05 +0100 | [diff] [blame] | 740 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels = |
| 741 | spec->num_channels - 14; |
| 742 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates = |
| 743 | num_rates - 4; |
| 744 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14]; |
| 745 | rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4]; |
| 746 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 747 | &rt2x00dev->bands[IEEE80211_BAND_5GHZ]; |
Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 748 | memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap, |
| 749 | &spec->ht, sizeof(spec->ht)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 750 | } |
| 751 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 752 | return 0; |
| 753 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 754 | exit_free_channels: |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 755 | kfree(channels); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 756 | ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n"); |
| 757 | return -ENOMEM; |
| 758 | } |
| 759 | |
| 760 | static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev) |
| 761 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 762 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 763 | ieee80211_unregister_hw(rt2x00dev->hw); |
| 764 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 765 | if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) { |
| 766 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels); |
| 767 | kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates); |
| 768 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL; |
| 769 | rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 770 | } |
Ivo van Doorn | 8c5e7a5 | 2008-08-04 16:38:47 +0200 | [diff] [blame] | 771 | |
| 772 | kfree(rt2x00dev->spec.channels_info); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev) |
| 776 | { |
| 777 | struct hw_mode_spec *spec = &rt2x00dev->spec; |
| 778 | int status; |
| 779 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 780 | if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags)) |
| 781 | return 0; |
| 782 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 783 | /* |
| 784 | * Initialize HW modes. |
| 785 | */ |
| 786 | status = rt2x00lib_probe_hw_modes(rt2x00dev, spec); |
| 787 | if (status) |
| 788 | return status; |
| 789 | |
| 790 | /* |
Gertjan van Wingerde | 61448f8 | 2008-05-10 13:43:33 +0200 | [diff] [blame] | 791 | * Initialize HW fields. |
| 792 | */ |
| 793 | rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues; |
| 794 | |
| 795 | /* |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 796 | * Initialize extra TX headroom required. |
| 797 | */ |
Gertjan van Wingerde | 7a4a77b | 2009-12-30 11:36:30 +0100 | [diff] [blame] | 798 | rt2x00dev->hw->extra_tx_headroom = |
| 799 | max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM, |
| 800 | rt2x00dev->ops->extra_tx_headroom); |
| 801 | |
| 802 | /* |
| 803 | * Take TX headroom required for alignment into account. |
| 804 | */ |
| 805 | if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) |
| 806 | rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE; |
| 807 | else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags)) |
| 808 | rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE; |
Gertjan van Wingerde | e6218cc | 2009-11-23 22:44:52 +0100 | [diff] [blame] | 809 | |
| 810 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 811 | * Allocate tx status FIFO for driver use. |
| 812 | */ |
Johannes Stezenbach | 5235189 | 2010-12-27 15:04:54 +0100 | [diff] [blame] | 813 | if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags)) { |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 814 | /* |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame^] | 815 | * Allocate the txstatus fifo. In the worst case the tx |
| 816 | * status fifo has to hold the tx status of all entries |
| 817 | * in all tx queues. Hence, calculate the kfifo size as |
| 818 | * tx_queues * entry_num and round up to the nearest |
| 819 | * power of 2. |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 820 | */ |
Helmut Schaa | f78987c | 2011-03-28 13:30:36 +0200 | [diff] [blame^] | 821 | int kfifo_size = |
| 822 | roundup_pow_of_two(rt2x00dev->ops->tx_queues * |
| 823 | rt2x00dev->ops->tx->entry_num * |
| 824 | sizeof(u32)); |
| 825 | |
| 826 | status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size, |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 827 | GFP_KERNEL); |
| 828 | if (status) |
| 829 | return status; |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | /* |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 833 | * Initialize tasklets if used by the driver. Tasklets are |
| 834 | * disabled until the interrupts are turned on. The driver |
| 835 | * has to handle that. |
| 836 | */ |
| 837 | #define RT2X00_TASKLET_INIT(taskletname) \ |
| 838 | if (rt2x00dev->ops->lib->taskletname) { \ |
| 839 | tasklet_init(&rt2x00dev->taskletname, \ |
| 840 | rt2x00dev->ops->lib->taskletname, \ |
| 841 | (unsigned long)rt2x00dev); \ |
| 842 | tasklet_disable(&rt2x00dev->taskletname); \ |
| 843 | } |
| 844 | |
Helmut Schaa | c8e15a1 | 2011-01-30 13:18:13 +0100 | [diff] [blame] | 845 | RT2X00_TASKLET_INIT(txstatus_tasklet); |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 846 | RT2X00_TASKLET_INIT(pretbtt_tasklet); |
| 847 | RT2X00_TASKLET_INIT(tbtt_tasklet); |
| 848 | RT2X00_TASKLET_INIT(rxdone_tasklet); |
| 849 | RT2X00_TASKLET_INIT(autowake_tasklet); |
| 850 | |
| 851 | #undef RT2X00_TASKLET_INIT |
| 852 | |
| 853 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 854 | * Register HW. |
| 855 | */ |
| 856 | status = ieee80211_register_hw(rt2x00dev->hw); |
Herton Ronaldo Krzesinski | f05faa3 | 2009-04-10 18:05:14 -0300 | [diff] [blame] | 857 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 858 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 859 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 860 | set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 861 | |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * Initialization/uninitialization handlers. |
| 867 | */ |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 868 | static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 869 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 870 | if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 871 | return; |
| 872 | |
| 873 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 874 | * Unregister extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 875 | */ |
| 876 | rt2x00rfkill_unregister(rt2x00dev); |
| 877 | |
| 878 | /* |
| 879 | * Allow the HW to uninitialize. |
| 880 | */ |
| 881 | rt2x00dev->ops->lib->uninitialize(rt2x00dev); |
| 882 | |
| 883 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 884 | * Free allocated queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 885 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 886 | rt2x00queue_uninitialize(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 887 | } |
| 888 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 889 | static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 890 | { |
| 891 | int status; |
| 892 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 893 | if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 894 | return 0; |
| 895 | |
| 896 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 897 | * Allocate all queue entries. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 898 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 899 | status = rt2x00queue_initialize(rt2x00dev); |
| 900 | if (status) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 901 | return status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 902 | |
| 903 | /* |
| 904 | * Initialize the device. |
| 905 | */ |
| 906 | status = rt2x00dev->ops->lib->initialize(rt2x00dev); |
Ivo van Doorn | ed49998 | 2008-05-05 17:23:47 +0200 | [diff] [blame] | 907 | if (status) { |
| 908 | rt2x00queue_uninitialize(rt2x00dev); |
| 909 | return status; |
| 910 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 911 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 912 | set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 913 | |
| 914 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 915 | * Register the extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 916 | */ |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 917 | rt2x00rfkill_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 918 | |
| 919 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 920 | } |
| 921 | |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 922 | int rt2x00lib_start(struct rt2x00_dev *rt2x00dev) |
| 923 | { |
| 924 | int retval; |
| 925 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 926 | if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 927 | return 0; |
| 928 | |
| 929 | /* |
| 930 | * If this is the first interface which is added, |
| 931 | * we should load the firmware now. |
| 932 | */ |
Ivo van Doorn | 9404ef3 | 2008-02-03 15:48:38 +0100 | [diff] [blame] | 933 | retval = rt2x00lib_load_firmware(rt2x00dev); |
| 934 | if (retval) |
| 935 | return retval; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 936 | |
| 937 | /* |
| 938 | * Initialize the device. |
| 939 | */ |
| 940 | retval = rt2x00lib_initialize(rt2x00dev); |
| 941 | if (retval) |
| 942 | return retval; |
| 943 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 944 | rt2x00dev->intf_ap_count = 0; |
| 945 | rt2x00dev->intf_sta_count = 0; |
| 946 | rt2x00dev->intf_associated = 0; |
| 947 | |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 948 | /* Enable the radio */ |
| 949 | retval = rt2x00lib_enable_radio(rt2x00dev); |
Helmut Schaa | 1f0280c | 2010-10-02 11:34:05 +0200 | [diff] [blame] | 950 | if (retval) |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 951 | return retval; |
Ivo van Doorn | bdfa500 | 2009-08-08 23:53:04 +0200 | [diff] [blame] | 952 | |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 953 | set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev) |
| 959 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 960 | if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 961 | return; |
| 962 | |
| 963 | /* |
| 964 | * Perhaps we can add something smarter here, |
| 965 | * but for now just disabling the radio should do. |
| 966 | */ |
| 967 | rt2x00lib_disable_radio(rt2x00dev); |
| 968 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 969 | rt2x00dev->intf_ap_count = 0; |
| 970 | rt2x00dev->intf_sta_count = 0; |
| 971 | rt2x00dev->intf_associated = 0; |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 972 | } |
| 973 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 974 | /* |
| 975 | * driver allocation handlers. |
| 976 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 977 | int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) |
| 978 | { |
| 979 | int retval = -ENOMEM; |
| 980 | |
Helmut Schaa | c5c6576 | 2011-01-30 13:17:52 +0100 | [diff] [blame] | 981 | spin_lock_init(&rt2x00dev->irqmask_lock); |
Ivo van Doorn | 8ff48a8 | 2008-11-09 23:40:46 +0100 | [diff] [blame] | 982 | mutex_init(&rt2x00dev->csr_mutex); |
| 983 | |
Sean Cross | 66f84d6 | 2009-11-05 20:22:03 +0100 | [diff] [blame] | 984 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
| 985 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 986 | /* |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 987 | * Make room for rt2x00_intf inside the per-interface |
| 988 | * structure ieee80211_vif. |
| 989 | */ |
| 990 | rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf); |
| 991 | |
Ivo van Doorn | 3514a44 | 2008-10-29 17:18:46 +0100 | [diff] [blame] | 992 | /* |
| 993 | * Determine which operating modes are supported, all modes |
| 994 | * which require beaconing, depend on the availability of |
| 995 | * beacon entries. |
| 996 | */ |
| 997 | rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
| 998 | if (rt2x00dev->ops->bcn->entry_num > 0) |
| 999 | rt2x00dev->hw->wiphy->interface_modes |= |
| 1000 | BIT(NL80211_IFTYPE_ADHOC) | |
Andrey Yurovsky | a07dbea | 2008-12-20 10:55:34 +0100 | [diff] [blame] | 1001 | BIT(NL80211_IFTYPE_AP) | |
Ivo van Doorn | ce292a6 | 2008-12-20 10:57:02 +0100 | [diff] [blame] | 1002 | BIT(NL80211_IFTYPE_MESH_POINT) | |
| 1003 | BIT(NL80211_IFTYPE_WDS); |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1004 | |
Ivo van Doorn | 6bb40dd | 2008-02-03 15:49:59 +0100 | [diff] [blame] | 1005 | /* |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1006 | * Initialize work. |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1007 | */ |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1008 | rt2x00dev->workqueue = |
| 1009 | alloc_ordered_workqueue(wiphy_name(rt2x00dev->hw->wiphy), 0); |
| 1010 | if (!rt2x00dev->workqueue) { |
| 1011 | retval = -ENOMEM; |
| 1012 | goto exit; |
| 1013 | } |
| 1014 | |
Stephen Boyd | 9acd56d | 2010-07-16 09:50:10 -0700 | [diff] [blame] | 1015 | INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled); |
| 1016 | |
| 1017 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1018 | * Let the driver probe the device to detect the capabilities. |
| 1019 | */ |
| 1020 | retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev); |
| 1021 | if (retval) { |
| 1022 | ERROR(rt2x00dev, "Failed to allocate device.\n"); |
| 1023 | goto exit; |
| 1024 | } |
| 1025 | |
| 1026 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1027 | * Allocate queue array. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1028 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1029 | retval = rt2x00queue_allocate(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1030 | if (retval) |
| 1031 | goto exit; |
| 1032 | |
| 1033 | /* |
| 1034 | * Initialize ieee80211 structure. |
| 1035 | */ |
| 1036 | retval = rt2x00lib_probe_hw(rt2x00dev); |
| 1037 | if (retval) { |
| 1038 | ERROR(rt2x00dev, "Failed to initialize hw.\n"); |
| 1039 | goto exit; |
| 1040 | } |
| 1041 | |
| 1042 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1043 | * Register extra components. |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1044 | */ |
Ivo van Doorn | 84e3196 | 2008-12-20 10:53:29 +0100 | [diff] [blame] | 1045 | rt2x00link_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1046 | rt2x00leds_register(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1047 | rt2x00debug_register(rt2x00dev); |
| 1048 | |
| 1049 | return 0; |
| 1050 | |
| 1051 | exit: |
| 1052 | rt2x00lib_remove_dev(rt2x00dev); |
| 1053 | |
| 1054 | return retval; |
| 1055 | } |
| 1056 | EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev); |
| 1057 | |
| 1058 | void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) |
| 1059 | { |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1060 | clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1061 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1062 | /* |
| 1063 | * Disable radio. |
| 1064 | */ |
| 1065 | rt2x00lib_disable_radio(rt2x00dev); |
| 1066 | |
| 1067 | /* |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1068 | * Stop all work. |
| 1069 | */ |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1070 | cancel_work_sync(&rt2x00dev->intf_work); |
Ivo van Doorn | 7e613e1 | 2010-08-06 20:45:38 +0200 | [diff] [blame] | 1071 | cancel_work_sync(&rt2x00dev->rxdone_work); |
| 1072 | cancel_work_sync(&rt2x00dev->txdone_work); |
Ivo van Doorn | 0439f53 | 2011-01-30 13:24:05 +0100 | [diff] [blame] | 1073 | destroy_workqueue(rt2x00dev->workqueue); |
Pavel Roskin | d8cc892 | 2009-08-02 14:30:15 -0400 | [diff] [blame] | 1074 | |
| 1075 | /* |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1076 | * Free the tx status fifo. |
| 1077 | */ |
| 1078 | kfifo_free(&rt2x00dev->txstatus_fifo); |
| 1079 | |
| 1080 | /* |
| 1081 | * Kill the tx status tasklet. |
| 1082 | */ |
| 1083 | tasklet_kill(&rt2x00dev->txstatus_tasklet); |
Ivo van Doorn | e1f4e80 | 2011-01-30 13:23:42 +0100 | [diff] [blame] | 1084 | tasklet_kill(&rt2x00dev->pretbtt_tasklet); |
| 1085 | tasklet_kill(&rt2x00dev->tbtt_tasklet); |
| 1086 | tasklet_kill(&rt2x00dev->rxdone_tasklet); |
| 1087 | tasklet_kill(&rt2x00dev->autowake_tasklet); |
Helmut Schaa | 96c3da7 | 2010-10-02 11:27:35 +0200 | [diff] [blame] | 1088 | |
| 1089 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1090 | * Uninitialize device. |
| 1091 | */ |
| 1092 | rt2x00lib_uninitialize(rt2x00dev); |
| 1093 | |
| 1094 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1095 | * Free extra components |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1096 | */ |
| 1097 | rt2x00debug_deregister(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1098 | rt2x00leds_unregister(rt2x00dev); |
| 1099 | |
| 1100 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1101 | * Free ieee80211_hw memory. |
| 1102 | */ |
| 1103 | rt2x00lib_remove_hw(rt2x00dev); |
| 1104 | |
| 1105 | /* |
| 1106 | * Free firmware image. |
| 1107 | */ |
| 1108 | rt2x00lib_free_firmware(rt2x00dev); |
| 1109 | |
| 1110 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1111 | * Free queue structures. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1112 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 1113 | rt2x00queue_free(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1114 | } |
| 1115 | EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev); |
| 1116 | |
| 1117 | /* |
| 1118 | * Device state handlers |
| 1119 | */ |
| 1120 | #ifdef CONFIG_PM |
| 1121 | int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state) |
| 1122 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1123 | NOTICE(rt2x00dev, "Going to sleep.\n"); |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1124 | |
| 1125 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1126 | * Prevent mac80211 from accessing driver while suspended. |
Ivo van Doorn | 066cb63 | 2007-09-25 20:55:39 +0200 | [diff] [blame] | 1127 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1128 | if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
| 1129 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1130 | |
| 1131 | /* |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1132 | * Cleanup as much as possible. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1133 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1134 | rt2x00lib_uninitialize(rt2x00dev); |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1135 | |
| 1136 | /* |
| 1137 | * Suspend/disable extra components. |
| 1138 | */ |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1139 | rt2x00leds_suspend(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1140 | rt2x00debug_deregister(rt2x00dev); |
| 1141 | |
| 1142 | /* |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1143 | * Set device mode to sleep for power management, |
| 1144 | * on some hardware this call seems to consistently fail. |
| 1145 | * From the specifications it is hard to tell why it fails, |
| 1146 | * and if this is a "bad thing". |
| 1147 | * Overall it is safe to just ignore the failure and |
| 1148 | * continue suspending. The only downside is that the |
| 1149 | * device will not be in optimal power save mode, but with |
| 1150 | * the radio and the other components already disabled the |
| 1151 | * device is as good as disabled. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1152 | */ |
Ivo van Doorn | 0712612 | 2009-01-23 17:04:05 +0100 | [diff] [blame] | 1153 | if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP)) |
Ivo van Doorn | 9896322 | 2008-03-27 17:15:24 +0100 | [diff] [blame] | 1154 | WARNING(rt2x00dev, "Device failed to enter sleep state, " |
| 1155 | "continue suspending.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1156 | |
| 1157 | return 0; |
| 1158 | } |
| 1159 | EXPORT_SYMBOL_GPL(rt2x00lib_suspend); |
| 1160 | |
| 1161 | int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev) |
| 1162 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1163 | NOTICE(rt2x00dev, "Waking up.\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1164 | |
| 1165 | /* |
Ivo van Doorn | 1682fe6 | 2008-03-13 15:38:03 +0100 | [diff] [blame] | 1166 | * Restore/enable extra components. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1167 | */ |
| 1168 | rt2x00debug_register(rt2x00dev); |
Ivo van Doorn | a9450b7 | 2008-02-03 15:53:40 +0100 | [diff] [blame] | 1169 | rt2x00leds_resume(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1170 | |
| 1171 | /* |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1172 | * We are ready again to receive requests from mac80211. |
| 1173 | */ |
Ivo van Doorn | 0262ab0 | 2008-08-29 21:04:26 +0200 | [diff] [blame] | 1174 | set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); |
Ivo van Doorn | e37ea21 | 2008-01-06 23:40:07 +0100 | [diff] [blame] | 1175 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1176 | return 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1177 | } |
| 1178 | EXPORT_SYMBOL_GPL(rt2x00lib_resume); |
| 1179 | #endif /* CONFIG_PM */ |
| 1180 | |
| 1181 | /* |
| 1182 | * rt2x00lib module information. |
| 1183 | */ |
| 1184 | MODULE_AUTHOR(DRV_PROJECT); |
| 1185 | MODULE_VERSION(DRV_VERSION); |
| 1186 | MODULE_DESCRIPTION("rt2x00 library"); |
| 1187 | MODULE_LICENSE("GPL"); |