Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008, cozybit Inc. |
| 3 | * Copyright (C) 2003-2006, Marvell International Ltd. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or (at |
| 8 | * your option) any later version. |
| 9 | */ |
| 10 | #include "libertas_tf.h" |
| 11 | #include "linux/etherdevice.h" |
| 12 | |
| 13 | #define DRIVER_RELEASE_VERSION "004.p0" |
| 14 | /* thinfirm version: 5.132.X.pX */ |
| 15 | #define LBTF_FW_VER_MIN 0x05840300 |
| 16 | #define LBTF_FW_VER_MAX 0x0584ffff |
| 17 | #define QOS_CONTROL_LEN 2 |
| 18 | |
| 19 | static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION; |
| 20 | struct workqueue_struct *lbtf_wq; |
| 21 | |
| 22 | static const struct ieee80211_channel lbtf_channels[] = { |
| 23 | { .center_freq = 2412, .hw_value = 1 }, |
| 24 | { .center_freq = 2417, .hw_value = 2 }, |
| 25 | { .center_freq = 2422, .hw_value = 3 }, |
| 26 | { .center_freq = 2427, .hw_value = 4 }, |
| 27 | { .center_freq = 2432, .hw_value = 5 }, |
| 28 | { .center_freq = 2437, .hw_value = 6 }, |
| 29 | { .center_freq = 2442, .hw_value = 7 }, |
| 30 | { .center_freq = 2447, .hw_value = 8 }, |
| 31 | { .center_freq = 2452, .hw_value = 9 }, |
| 32 | { .center_freq = 2457, .hw_value = 10 }, |
| 33 | { .center_freq = 2462, .hw_value = 11 }, |
| 34 | { .center_freq = 2467, .hw_value = 12 }, |
| 35 | { .center_freq = 2472, .hw_value = 13 }, |
| 36 | { .center_freq = 2484, .hw_value = 14 }, |
| 37 | }; |
| 38 | |
| 39 | /* This table contains the hardware specific values for the modulation rates. */ |
| 40 | static const struct ieee80211_rate lbtf_rates[] = { |
| 41 | { .bitrate = 10, |
| 42 | .hw_value = 0, }, |
| 43 | { .bitrate = 20, |
| 44 | .hw_value = 1, |
| 45 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 46 | { .bitrate = 55, |
| 47 | .hw_value = 2, |
| 48 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 49 | { .bitrate = 110, |
| 50 | .hw_value = 3, |
| 51 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 52 | { .bitrate = 60, |
| 53 | .hw_value = 5, |
| 54 | .flags = 0 }, |
| 55 | { .bitrate = 90, |
| 56 | .hw_value = 6, |
| 57 | .flags = 0 }, |
| 58 | { .bitrate = 120, |
| 59 | .hw_value = 7, |
| 60 | .flags = 0 }, |
| 61 | { .bitrate = 180, |
| 62 | .hw_value = 8, |
| 63 | .flags = 0 }, |
| 64 | { .bitrate = 240, |
| 65 | .hw_value = 9, |
| 66 | .flags = 0 }, |
| 67 | { .bitrate = 360, |
| 68 | .hw_value = 10, |
| 69 | .flags = 0 }, |
| 70 | { .bitrate = 480, |
| 71 | .hw_value = 11, |
| 72 | .flags = 0 }, |
| 73 | { .bitrate = 540, |
| 74 | .hw_value = 12, |
| 75 | .flags = 0 }, |
| 76 | }; |
| 77 | |
| 78 | static void lbtf_cmd_work(struct work_struct *work) |
| 79 | { |
| 80 | struct lbtf_private *priv = container_of(work, struct lbtf_private, |
| 81 | cmd_work); |
| 82 | spin_lock_irq(&priv->driver_lock); |
| 83 | /* command response? */ |
| 84 | if (priv->cmd_response_rxed) { |
| 85 | priv->cmd_response_rxed = 0; |
| 86 | spin_unlock_irq(&priv->driver_lock); |
| 87 | lbtf_process_rx_command(priv); |
| 88 | spin_lock_irq(&priv->driver_lock); |
| 89 | } |
| 90 | |
| 91 | if (priv->cmd_timed_out && priv->cur_cmd) { |
| 92 | struct cmd_ctrl_node *cmdnode = priv->cur_cmd; |
| 93 | |
| 94 | if (++priv->nr_retries > 10) { |
| 95 | lbtf_complete_command(priv, cmdnode, |
| 96 | -ETIMEDOUT); |
| 97 | priv->nr_retries = 0; |
| 98 | } else { |
| 99 | priv->cur_cmd = NULL; |
| 100 | |
| 101 | /* Stick it back at the _top_ of the pending |
| 102 | * queue for immediate resubmission */ |
| 103 | list_add(&cmdnode->list, &priv->cmdpendingq); |
| 104 | } |
| 105 | } |
| 106 | priv->cmd_timed_out = 0; |
| 107 | spin_unlock_irq(&priv->driver_lock); |
| 108 | |
| 109 | if (!priv->fw_ready) |
| 110 | return; |
| 111 | /* Execute the next command */ |
| 112 | if (!priv->cur_cmd) |
| 113 | lbtf_execute_next_command(priv); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * lbtf_setup_firmware: initialize firmware. |
| 118 | * |
| 119 | * @priv A pointer to struct lbtf_private structure |
| 120 | * |
| 121 | * Returns: 0 on success. |
| 122 | */ |
| 123 | static int lbtf_setup_firmware(struct lbtf_private *priv) |
| 124 | { |
| 125 | int ret = -1; |
| 126 | |
| 127 | /* |
| 128 | * Read priv address from HW |
| 129 | */ |
| 130 | memset(priv->current_addr, 0xff, ETH_ALEN); |
| 131 | ret = lbtf_update_hw_spec(priv); |
| 132 | if (ret) { |
| 133 | ret = -1; |
| 134 | goto done; |
| 135 | } |
| 136 | |
| 137 | lbtf_set_mac_control(priv); |
| 138 | lbtf_set_radio_control(priv); |
| 139 | |
| 140 | ret = 0; |
| 141 | done: |
| 142 | return ret; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * This function handles the timeout of command sending. |
| 147 | * It will re-send the same command again. |
| 148 | */ |
| 149 | static void command_timer_fn(unsigned long data) |
| 150 | { |
| 151 | struct lbtf_private *priv = (struct lbtf_private *)data; |
| 152 | unsigned long flags; |
| 153 | |
| 154 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 155 | |
| 156 | if (!priv->cur_cmd) { |
| 157 | printk(KERN_DEBUG "libertastf: command timer expired; " |
| 158 | "no pending command\n"); |
| 159 | goto out; |
| 160 | } |
| 161 | |
| 162 | printk(KERN_DEBUG "libertas: command %x timed out\n", |
| 163 | le16_to_cpu(priv->cur_cmd->cmdbuf->command)); |
| 164 | |
| 165 | priv->cmd_timed_out = 1; |
| 166 | queue_work(lbtf_wq, &priv->cmd_work); |
| 167 | out: |
| 168 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 169 | } |
| 170 | |
| 171 | static int lbtf_init_adapter(struct lbtf_private *priv) |
| 172 | { |
| 173 | memset(priv->current_addr, 0xff, ETH_ALEN); |
| 174 | mutex_init(&priv->lock); |
| 175 | |
| 176 | priv->vif = NULL; |
| 177 | setup_timer(&priv->command_timer, command_timer_fn, |
| 178 | (unsigned long)priv); |
| 179 | |
| 180 | INIT_LIST_HEAD(&priv->cmdfreeq); |
| 181 | INIT_LIST_HEAD(&priv->cmdpendingq); |
| 182 | |
| 183 | spin_lock_init(&priv->driver_lock); |
| 184 | |
| 185 | /* Allocate the command buffers */ |
| 186 | if (lbtf_allocate_cmd_buffer(priv)) |
| 187 | return -1; |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static void lbtf_free_adapter(struct lbtf_private *priv) |
| 193 | { |
| 194 | lbtf_free_cmd_buffer(priv); |
| 195 | del_timer(&priv->command_timer); |
| 196 | } |
| 197 | |
| 198 | static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| 199 | { |
| 200 | struct lbtf_private *priv = hw->priv; |
| 201 | |
| 202 | priv->skb_to_tx = skb; |
| 203 | queue_work(lbtf_wq, &priv->tx_work); |
| 204 | /* |
| 205 | * queue will be restarted when we receive transmission feedback if |
| 206 | * there are no buffered multicast frames to send |
| 207 | */ |
| 208 | ieee80211_stop_queues(priv->hw); |
Andrey Yurovsky | 51e9915 | 2009-01-05 14:37:31 -0800 | [diff] [blame] | 209 | return NETDEV_TX_OK; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | static void lbtf_tx_work(struct work_struct *work) |
| 213 | { |
| 214 | struct lbtf_private *priv = container_of(work, struct lbtf_private, |
| 215 | tx_work); |
| 216 | unsigned int len; |
| 217 | struct ieee80211_tx_info *info; |
| 218 | struct txpd *txpd; |
| 219 | struct sk_buff *skb = NULL; |
| 220 | int err; |
| 221 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 222 | if ((priv->vif->type == NL80211_IFTYPE_AP) && |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 223 | (!skb_queue_empty(&priv->bc_ps_buf))) |
| 224 | skb = skb_dequeue(&priv->bc_ps_buf); |
| 225 | else if (priv->skb_to_tx) { |
| 226 | skb = priv->skb_to_tx; |
| 227 | priv->skb_to_tx = NULL; |
| 228 | } else |
| 229 | return; |
| 230 | |
| 231 | len = skb->len; |
| 232 | info = IEEE80211_SKB_CB(skb); |
| 233 | txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd)); |
| 234 | |
| 235 | if (priv->surpriseremoved) { |
| 236 | dev_kfree_skb_any(skb); |
| 237 | return; |
| 238 | } |
| 239 | |
| 240 | memset(txpd, 0, sizeof(struct txpd)); |
| 241 | /* Activate per-packet rate selection */ |
| 242 | txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | |
| 243 | ieee80211_get_tx_rate(priv->hw, info)->hw_value); |
| 244 | |
| 245 | /* copy destination address from 802.11 header */ |
| 246 | memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, |
| 247 | ETH_ALEN); |
| 248 | txpd->tx_packet_length = cpu_to_le16(len); |
| 249 | txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); |
| 250 | BUG_ON(priv->tx_skb); |
| 251 | spin_lock_irq(&priv->driver_lock); |
| 252 | priv->tx_skb = skb; |
| 253 | err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); |
| 254 | spin_unlock_irq(&priv->driver_lock); |
| 255 | if (err) { |
| 256 | dev_kfree_skb_any(skb); |
| 257 | priv->tx_skb = NULL; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | static int lbtf_op_start(struct ieee80211_hw *hw) |
| 262 | { |
| 263 | struct lbtf_private *priv = hw->priv; |
| 264 | void *card = priv->card; |
| 265 | int ret = -1; |
| 266 | |
| 267 | if (!priv->fw_ready) |
| 268 | /* Upload firmware */ |
| 269 | if (priv->hw_prog_firmware(card)) |
| 270 | goto err_prog_firmware; |
| 271 | |
| 272 | /* poke the firmware */ |
| 273 | priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; |
| 274 | priv->radioon = RADIO_ON; |
| 275 | priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; |
| 276 | ret = lbtf_setup_firmware(priv); |
| 277 | if (ret) |
| 278 | goto err_prog_firmware; |
| 279 | |
| 280 | if ((priv->fwrelease < LBTF_FW_VER_MIN) || |
| 281 | (priv->fwrelease > LBTF_FW_VER_MAX)) { |
| 282 | ret = -1; |
| 283 | goto err_prog_firmware; |
| 284 | } |
| 285 | |
| 286 | printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); |
| 287 | return 0; |
| 288 | |
| 289 | err_prog_firmware: |
| 290 | priv->hw_reset_device(card); |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | static void lbtf_op_stop(struct ieee80211_hw *hw) |
| 295 | { |
| 296 | struct lbtf_private *priv = hw->priv; |
| 297 | unsigned long flags; |
| 298 | struct sk_buff *skb; |
| 299 | |
| 300 | struct cmd_ctrl_node *cmdnode; |
| 301 | /* Flush pending command nodes */ |
| 302 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 303 | list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { |
| 304 | cmdnode->result = -ENOENT; |
| 305 | cmdnode->cmdwaitqwoken = 1; |
| 306 | wake_up_interruptible(&cmdnode->cmdwait_q); |
| 307 | } |
| 308 | |
| 309 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 310 | cancel_work_sync(&priv->cmd_work); |
| 311 | cancel_work_sync(&priv->tx_work); |
| 312 | while ((skb = skb_dequeue(&priv->bc_ps_buf))) |
| 313 | dev_kfree_skb_any(skb); |
| 314 | priv->radioon = RADIO_OFF; |
| 315 | lbtf_set_radio_control(priv); |
| 316 | |
| 317 | return; |
| 318 | } |
| 319 | |
| 320 | static int lbtf_op_add_interface(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 321 | struct ieee80211_vif *vif) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 322 | { |
| 323 | struct lbtf_private *priv = hw->priv; |
| 324 | if (priv->vif != NULL) |
| 325 | return -EOPNOTSUPP; |
| 326 | |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 327 | priv->vif = vif; |
| 328 | switch (vif->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 329 | case NL80211_IFTYPE_MESH_POINT: |
| 330 | case NL80211_IFTYPE_AP: |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 331 | lbtf_set_mode(priv, LBTF_AP_MODE); |
| 332 | break; |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 333 | case NL80211_IFTYPE_STATION: |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 334 | lbtf_set_mode(priv, LBTF_STA_MODE); |
| 335 | break; |
| 336 | default: |
| 337 | priv->vif = NULL; |
| 338 | return -EOPNOTSUPP; |
| 339 | } |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 340 | lbtf_set_mac_address(priv, (u8 *) vif->addr); |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 341 | return 0; |
| 342 | } |
| 343 | |
| 344 | static void lbtf_op_remove_interface(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 345 | struct ieee80211_vif *vif) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 346 | { |
| 347 | struct lbtf_private *priv = hw->priv; |
| 348 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 349 | if (priv->vif->type == NL80211_IFTYPE_AP || |
| 350 | priv->vif->type == NL80211_IFTYPE_MESH_POINT) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 351 | lbtf_beacon_ctrl(priv, 0, 0); |
| 352 | lbtf_set_mode(priv, LBTF_PASSIVE_MODE); |
| 353 | lbtf_set_bssid(priv, 0, NULL); |
| 354 | priv->vif = NULL; |
| 355 | } |
| 356 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 357 | static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 358 | { |
| 359 | struct lbtf_private *priv = hw->priv; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 360 | struct ieee80211_conf *conf = &hw->conf; |
| 361 | |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 362 | if (conf->channel->center_freq != priv->cur_freq) { |
| 363 | priv->cur_freq = conf->channel->center_freq; |
| 364 | lbtf_set_channel(priv, conf->channel->hw_value); |
| 365 | } |
| 366 | return 0; |
| 367 | } |
| 368 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 369 | static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, |
| 370 | int mc_count, struct dev_addr_list *mclist) |
| 371 | { |
| 372 | struct lbtf_private *priv = hw->priv; |
| 373 | int i; |
| 374 | |
| 375 | if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) |
| 376 | return mc_count; |
| 377 | |
| 378 | priv->nr_of_multicastmacaddr = mc_count; |
| 379 | for (i = 0; i < mc_count; i++) { |
| 380 | if (!mclist) |
| 381 | break; |
| 382 | memcpy(&priv->multicastlist[i], mclist->da_addr, |
| 383 | ETH_ALEN); |
| 384 | mclist = mclist->next; |
| 385 | } |
| 386 | |
| 387 | return mc_count; |
| 388 | } |
| 389 | |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 390 | #define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI) |
| 391 | static void lbtf_op_configure_filter(struct ieee80211_hw *hw, |
| 392 | unsigned int changed_flags, |
| 393 | unsigned int *new_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 394 | u64 multicast) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 395 | { |
| 396 | struct lbtf_private *priv = hw->priv; |
| 397 | int old_mac_control = priv->mac_control; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 398 | changed_flags &= SUPPORTED_FIF_FLAGS; |
| 399 | *new_flags &= SUPPORTED_FIF_FLAGS; |
| 400 | |
| 401 | if (!changed_flags) |
| 402 | return; |
| 403 | |
| 404 | if (*new_flags & (FIF_PROMISC_IN_BSS)) |
| 405 | priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; |
| 406 | else |
| 407 | priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; |
| 408 | if (*new_flags & (FIF_ALLMULTI) || |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 409 | multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 410 | priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; |
| 411 | priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 412 | } else if (multicast) { |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 413 | priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; |
| 414 | priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 415 | lbtf_cmd_set_mac_multicast_addr(priv); |
| 416 | } else { |
| 417 | priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | |
| 418 | CMD_ACT_MAC_ALL_MULTICAST_ENABLE); |
| 419 | if (priv->nr_of_multicastmacaddr) { |
| 420 | priv->nr_of_multicastmacaddr = 0; |
| 421 | lbtf_cmd_set_mac_multicast_addr(priv); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | |
| 426 | if (priv->mac_control != old_mac_control) |
| 427 | lbtf_set_mac_control(priv); |
| 428 | } |
| 429 | |
| 430 | static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, |
| 431 | struct ieee80211_vif *vif, |
| 432 | struct ieee80211_bss_conf *bss_conf, |
| 433 | u32 changes) |
| 434 | { |
| 435 | struct lbtf_private *priv = hw->priv; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 436 | struct sk_buff *beacon; |
| 437 | |
| 438 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { |
| 439 | switch (priv->vif->type) { |
| 440 | case NL80211_IFTYPE_AP: |
| 441 | case NL80211_IFTYPE_MESH_POINT: |
| 442 | beacon = ieee80211_beacon_get(hw, vif); |
| 443 | if (beacon) { |
| 444 | lbtf_beacon_set(priv, beacon); |
| 445 | kfree_skb(beacon); |
| 446 | lbtf_beacon_ctrl(priv, 1, |
| 447 | bss_conf->beacon_int); |
| 448 | } |
| 449 | break; |
| 450 | default: |
| 451 | break; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | if (changes & BSS_CHANGED_BSSID) { |
| 456 | bool activate = !is_zero_ether_addr(bss_conf->bssid); |
| 457 | lbtf_set_bssid(priv, activate, bss_conf->bssid); |
| 458 | } |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 459 | |
| 460 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
| 461 | if (bss_conf->use_short_preamble) |
| 462 | priv->preamble = CMD_TYPE_SHORT_PREAMBLE; |
| 463 | else |
| 464 | priv->preamble = CMD_TYPE_LONG_PREAMBLE; |
| 465 | lbtf_set_radio_control(priv); |
| 466 | } |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | static const struct ieee80211_ops lbtf_ops = { |
| 470 | .tx = lbtf_op_tx, |
| 471 | .start = lbtf_op_start, |
| 472 | .stop = lbtf_op_stop, |
| 473 | .add_interface = lbtf_op_add_interface, |
| 474 | .remove_interface = lbtf_op_remove_interface, |
| 475 | .config = lbtf_op_config, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 476 | .prepare_multicast = lbtf_op_prepare_multicast, |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 477 | .configure_filter = lbtf_op_configure_filter, |
| 478 | .bss_info_changed = lbtf_op_bss_info_changed, |
| 479 | }; |
| 480 | |
| 481 | int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) |
| 482 | { |
| 483 | struct ieee80211_rx_status stats; |
| 484 | struct rxpd *prxpd; |
Harvey Harrison | de9cc7a | 2008-08-25 14:06:32 -0700 | [diff] [blame] | 485 | int need_padding; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 486 | unsigned int flags; |
Harvey Harrison | de9cc7a | 2008-08-25 14:06:32 -0700 | [diff] [blame] | 487 | struct ieee80211_hdr *hdr; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 488 | |
| 489 | prxpd = (struct rxpd *) skb->data; |
| 490 | |
| 491 | stats.flag = 0; |
| 492 | if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) |
| 493 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; |
| 494 | stats.freq = priv->cur_freq; |
| 495 | stats.band = IEEE80211_BAND_2GHZ; |
| 496 | stats.signal = prxpd->snr; |
| 497 | stats.noise = prxpd->nf; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 498 | /* Marvell rate index has a hole at value 4 */ |
| 499 | if (prxpd->rx_rate > 4) |
| 500 | --prxpd->rx_rate; |
| 501 | stats.rate_idx = prxpd->rx_rate; |
| 502 | skb_pull(skb, sizeof(struct rxpd)); |
| 503 | |
Harvey Harrison | de9cc7a | 2008-08-25 14:06:32 -0700 | [diff] [blame] | 504 | hdr = (struct ieee80211_hdr *)skb->data; |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 505 | flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); |
| 506 | |
Harvey Harrison | de9cc7a | 2008-08-25 14:06:32 -0700 | [diff] [blame] | 507 | need_padding = ieee80211_is_data_qos(hdr->frame_control); |
| 508 | need_padding ^= ieee80211_has_a4(hdr->frame_control); |
| 509 | need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && |
| 510 | (*ieee80211_get_qos_ctl(hdr) & |
| 511 | IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 512 | |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 513 | if (need_padding) { |
| 514 | memmove(skb->data + 2, skb->data, skb->len); |
| 515 | skb_reserve(skb, 2); |
| 516 | } |
| 517 | |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 518 | memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); |
| 519 | ieee80211_rx_irqsafe(priv->hw, skb); |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 520 | return 0; |
| 521 | } |
| 522 | EXPORT_SYMBOL_GPL(lbtf_rx); |
| 523 | |
| 524 | /** |
| 525 | * lbtf_add_card: Add and initialize the card, no fw upload yet. |
| 526 | * |
| 527 | * @card A pointer to card |
| 528 | * |
| 529 | * Returns: pointer to struct lbtf_priv. |
| 530 | */ |
| 531 | struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) |
| 532 | { |
| 533 | struct ieee80211_hw *hw; |
| 534 | struct lbtf_private *priv = NULL; |
| 535 | |
| 536 | hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); |
| 537 | if (!hw) |
| 538 | goto done; |
| 539 | |
| 540 | priv = hw->priv; |
| 541 | if (lbtf_init_adapter(priv)) |
| 542 | goto err_init_adapter; |
| 543 | |
| 544 | priv->hw = hw; |
| 545 | priv->card = card; |
| 546 | priv->tx_skb = NULL; |
| 547 | |
| 548 | hw->queues = 1; |
| 549 | hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; |
| 550 | hw->extra_tx_headroom = sizeof(struct txpd); |
| 551 | memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); |
| 552 | memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); |
| 553 | priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); |
| 554 | priv->band.bitrates = priv->rates; |
| 555 | priv->band.n_channels = ARRAY_SIZE(lbtf_channels); |
| 556 | priv->band.channels = priv->channels; |
| 557 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; |
Deepak Saxena | f323383 | 2010-02-09 13:35:43 -0800 | [diff] [blame] | 558 | hw->wiphy->interface_modes = |
| 559 | BIT(NL80211_IFTYPE_STATION) | |
| 560 | BIT(NL80211_IFTYPE_ADHOC); |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 561 | skb_queue_head_init(&priv->bc_ps_buf); |
| 562 | |
| 563 | SET_IEEE80211_DEV(hw, dmdev); |
| 564 | |
| 565 | INIT_WORK(&priv->cmd_work, lbtf_cmd_work); |
| 566 | INIT_WORK(&priv->tx_work, lbtf_tx_work); |
| 567 | if (ieee80211_register_hw(hw)) |
| 568 | goto err_init_adapter; |
| 569 | |
| 570 | goto done; |
| 571 | |
| 572 | err_init_adapter: |
| 573 | lbtf_free_adapter(priv); |
| 574 | ieee80211_free_hw(hw); |
| 575 | priv = NULL; |
| 576 | |
| 577 | done: |
| 578 | return priv; |
| 579 | } |
| 580 | EXPORT_SYMBOL_GPL(lbtf_add_card); |
| 581 | |
| 582 | |
| 583 | int lbtf_remove_card(struct lbtf_private *priv) |
| 584 | { |
| 585 | struct ieee80211_hw *hw = priv->hw; |
| 586 | |
| 587 | priv->surpriseremoved = 1; |
| 588 | del_timer(&priv->command_timer); |
| 589 | lbtf_free_adapter(priv); |
| 590 | priv->hw = NULL; |
| 591 | ieee80211_unregister_hw(hw); |
| 592 | ieee80211_free_hw(hw); |
| 593 | |
| 594 | return 0; |
| 595 | } |
| 596 | EXPORT_SYMBOL_GPL(lbtf_remove_card); |
| 597 | |
| 598 | void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) |
| 599 | { |
| 600 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 601 | |
| 602 | ieee80211_tx_info_clear_status(info); |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 603 | /* |
| 604 | * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 |
| 605 | * default pid rc algorithm. |
| 606 | * |
| 607 | * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; |
| 608 | */ |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 609 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) |
| 610 | info->flags |= IEEE80211_TX_STAT_ACK; |
| 611 | skb_pull(priv->tx_skb, sizeof(struct txpd)); |
| 612 | ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); |
| 613 | priv->tx_skb = NULL; |
| 614 | if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) |
| 615 | ieee80211_wake_queues(priv->hw); |
| 616 | else |
| 617 | queue_work(lbtf_wq, &priv->tx_work); |
| 618 | } |
| 619 | EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); |
| 620 | |
| 621 | void lbtf_bcn_sent(struct lbtf_private *priv) |
| 622 | { |
| 623 | struct sk_buff *skb = NULL; |
| 624 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 625 | if (priv->vif->type != NL80211_IFTYPE_AP) |
Luis Carlos Cobo | 06b16ae | 2008-08-14 10:40:57 -0700 | [diff] [blame] | 626 | return; |
| 627 | |
| 628 | if (skb_queue_empty(&priv->bc_ps_buf)) { |
| 629 | bool tx_buff_bc = 0; |
| 630 | |
| 631 | while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { |
| 632 | skb_queue_tail(&priv->bc_ps_buf, skb); |
| 633 | tx_buff_bc = 1; |
| 634 | } |
| 635 | if (tx_buff_bc) { |
| 636 | ieee80211_stop_queues(priv->hw); |
| 637 | queue_work(lbtf_wq, &priv->tx_work); |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | skb = ieee80211_beacon_get(priv->hw, priv->vif); |
| 642 | |
| 643 | if (skb) { |
| 644 | lbtf_beacon_set(priv, skb); |
| 645 | kfree_skb(skb); |
| 646 | } |
| 647 | } |
| 648 | EXPORT_SYMBOL_GPL(lbtf_bcn_sent); |
| 649 | |
| 650 | static int __init lbtf_init_module(void) |
| 651 | { |
| 652 | lbtf_wq = create_workqueue("libertastf"); |
| 653 | if (lbtf_wq == NULL) { |
| 654 | printk(KERN_ERR "libertastf: couldn't create workqueue\n"); |
| 655 | return -ENOMEM; |
| 656 | } |
| 657 | return 0; |
| 658 | } |
| 659 | |
| 660 | static void __exit lbtf_exit_module(void) |
| 661 | { |
| 662 | destroy_workqueue(lbtf_wq); |
| 663 | } |
| 664 | |
| 665 | module_init(lbtf_init_module); |
| 666 | module_exit(lbtf_exit_module); |
| 667 | |
| 668 | MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); |
| 669 | MODULE_AUTHOR("Cozybit Inc."); |
| 670 | MODULE_LICENSE("GPL"); |