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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * This file contains the major functions in WLAN4 * driver. It includes init, exit, open, close and main5 * thread etc..6 */7 8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt9 10#include <linux/module.h>11#include <linux/delay.h>12#include <linux/etherdevice.h>13#include <linux/hardirq.h>14#include <linux/netdevice.h>15#include <linux/if_arp.h>16#include <linux/kthread.h>17#include <linux/kfifo.h>18#include <linux/slab.h>19#include <net/cfg80211.h>20 21#include "host.h"22#include "decl.h"23#include "dev.h"24#include "cfg.h"25#include "debugfs.h"26#include "cmd.h"27#include "mesh.h"28 29#define DRIVER_RELEASE_VERSION "323.p0"30const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION31#ifdef DEBUG32 "-dbg"33#endif34 "";35 36 37/* Module parameters */38unsigned int lbs_debug;39EXPORT_SYMBOL_GPL(lbs_debug);40module_param_named(libertas_debug, lbs_debug, int, 0644);41 42static unsigned int lbs_disablemesh;43module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);44 45 46/*47 * This global structure is used to send the confirm_sleep command as48 * fast as possible down to the firmware.49 */50struct cmd_confirm_sleep confirm_sleep;51 52 53/*54 * the table to keep region code55 */56u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =57 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };58 59/*60 * FW rate table. FW refers to rates by their index in this table, not by the61 * rate value itself. Values of 0x00 are62 * reserved positions.63 */64static u8 fw_data_rates[MAX_RATES] =65 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,66 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x0067};68 69/**70 * lbs_fw_index_to_data_rate - use index to get the data rate71 *72 * @idx: The index of data rate73 * returns: data rate or 074 */75u32 lbs_fw_index_to_data_rate(u8 idx)76{77 if (idx >= sizeof(fw_data_rates))78 idx = 0;79 return fw_data_rates[idx];80}81 82/**83 * lbs_data_rate_to_fw_index - use rate to get the index84 *85 * @rate: data rate86 * returns: index or 087 */88u8 lbs_data_rate_to_fw_index(u32 rate)89{90 u8 i;91 92 if (!rate)93 return 0;94 95 for (i = 0; i < sizeof(fw_data_rates); i++) {96 if (rate == fw_data_rates[i])97 return i;98 }99 return 0;100}101 102int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)103{104 int ret = 0;105 106 switch (type) {107 case NL80211_IFTYPE_MONITOR:108 ret = lbs_set_monitor_mode(priv, 1);109 break;110 case NL80211_IFTYPE_STATION:111 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)112 ret = lbs_set_monitor_mode(priv, 0);113 if (!ret)114 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);115 break;116 case NL80211_IFTYPE_ADHOC:117 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)118 ret = lbs_set_monitor_mode(priv, 0);119 if (!ret)120 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);121 break;122 default:123 ret = -ENOTSUPP;124 }125 return ret;126}127 128int lbs_start_iface(struct lbs_private *priv)129{130 struct cmd_ds_802_11_mac_address cmd;131 int ret;132 133 if (priv->power_restore) {134 ret = priv->power_restore(priv);135 if (ret)136 return ret;137 }138 139 cmd.hdr.size = cpu_to_le16(sizeof(cmd));140 cmd.action = cpu_to_le16(CMD_ACT_SET);141 memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);142 143 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);144 if (ret) {145 lbs_deb_net("set MAC address failed\n");146 goto err;147 }148 149 ret = lbs_set_iface_type(priv, priv->wdev->iftype);150 if (ret) {151 lbs_deb_net("set iface type failed\n");152 goto err;153 }154 155 ret = lbs_set_11d_domain_info(priv);156 if (ret) {157 lbs_deb_net("set 11d domain info failed\n");158 goto err;159 }160 161 lbs_update_channel(priv);162 163 priv->iface_running = true;164 return 0;165 166err:167 if (priv->power_save)168 priv->power_save(priv);169 return ret;170}171 172/**173 * lbs_dev_open - open the ethX interface174 *175 * @dev: A pointer to &net_device structure176 * returns: 0 or -EBUSY if monitor mode active177 */178static int lbs_dev_open(struct net_device *dev)179{180 struct lbs_private *priv = dev->ml_priv;181 int ret = 0;182 183 if (!priv->iface_running) {184 ret = lbs_start_iface(priv);185 if (ret)186 goto out;187 }188 189 spin_lock_irq(&priv->driver_lock);190 191 netif_carrier_off(dev);192 193 if (!priv->tx_pending_len)194 netif_wake_queue(dev);195 196 spin_unlock_irq(&priv->driver_lock);197 198out:199 return ret;200}201 202static bool lbs_command_queue_empty(struct lbs_private *priv)203{204 unsigned long flags;205 bool ret;206 spin_lock_irqsave(&priv->driver_lock, flags);207 ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);208 spin_unlock_irqrestore(&priv->driver_lock, flags);209 return ret;210}211 212int lbs_stop_iface(struct lbs_private *priv)213{214 unsigned long flags;215 int ret = 0;216 217 spin_lock_irqsave(&priv->driver_lock, flags);218 priv->iface_running = false;219 dev_kfree_skb_irq(priv->currenttxskb);220 priv->currenttxskb = NULL;221 priv->tx_pending_len = 0;222 spin_unlock_irqrestore(&priv->driver_lock, flags);223 224 cancel_work_sync(&priv->mcast_work);225 del_timer_sync(&priv->tx_lockup_timer);226 227 /* Disable command processing, and wait for all commands to complete */228 lbs_deb_main("waiting for commands to complete\n");229 wait_event(priv->waitq, lbs_command_queue_empty(priv));230 lbs_deb_main("all commands completed\n");231 232 if (priv->power_save)233 ret = priv->power_save(priv);234 235 return ret;236}237 238/**239 * lbs_eth_stop - close the ethX interface240 *241 * @dev: A pointer to &net_device structure242 * returns: 0243 */244static int lbs_eth_stop(struct net_device *dev)245{246 struct lbs_private *priv = dev->ml_priv;247 248 if (priv->connect_status == LBS_CONNECTED)249 lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);250 251 spin_lock_irq(&priv->driver_lock);252 netif_stop_queue(dev);253 spin_unlock_irq(&priv->driver_lock);254 255 lbs_update_mcast(priv);256 cancel_delayed_work_sync(&priv->scan_work);257 if (priv->scan_req)258 lbs_scan_done(priv);259 260 netif_carrier_off(priv->dev);261 262 if (!lbs_iface_active(priv))263 lbs_stop_iface(priv);264 265 return 0;266}267 268void lbs_host_to_card_done(struct lbs_private *priv)269{270 unsigned long flags;271 272 spin_lock_irqsave(&priv->driver_lock, flags);273 del_timer(&priv->tx_lockup_timer);274 275 priv->dnld_sent = DNLD_RES_RECEIVED;276 277 /* Wake main thread if commands are pending */278 if (!priv->cur_cmd || priv->tx_pending_len > 0) {279 if (!priv->wakeup_dev_required)280 wake_up(&priv->waitq);281 }282 283 spin_unlock_irqrestore(&priv->driver_lock, flags);284}285EXPORT_SYMBOL_GPL(lbs_host_to_card_done);286 287int lbs_set_mac_address(struct net_device *dev, void *addr)288{289 int ret = 0;290 struct lbs_private *priv = dev->ml_priv;291 struct sockaddr *phwaddr = addr;292 293 /*294 * Can only set MAC address when all interfaces are down, to be written295 * to the hardware when one of them is brought up.296 */297 if (lbs_iface_active(priv))298 return -EBUSY;299 300 /* In case it was called from the mesh device */301 dev = priv->dev;302 303 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);304 eth_hw_addr_set(dev, phwaddr->sa_data);305 if (priv->mesh_dev)306 eth_hw_addr_set(priv->mesh_dev, phwaddr->sa_data);307 308 return ret;309}310 311 312static inline int mac_in_list(unsigned char *list, int list_len,313 unsigned char *mac)314{315 while (list_len) {316 if (!memcmp(list, mac, ETH_ALEN))317 return 1;318 list += ETH_ALEN;319 list_len--;320 }321 return 0;322}323 324 325static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,326 struct net_device *dev, int nr_addrs)327{328 int i = nr_addrs;329 struct netdev_hw_addr *ha;330 int cnt;331 332 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))333 return nr_addrs;334 335 netif_addr_lock_bh(dev);336 cnt = netdev_mc_count(dev);337 netdev_for_each_mc_addr(ha, dev) {338 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {339 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,340 ha->addr);341 cnt--;342 continue;343 }344 345 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)346 break;347 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);348 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,349 ha->addr);350 i++;351 cnt--;352 }353 netif_addr_unlock_bh(dev);354 if (cnt)355 return -EOVERFLOW;356 357 return i;358}359 360void lbs_update_mcast(struct lbs_private *priv)361{362 struct cmd_ds_mac_multicast_adr mcast_cmd;363 int dev_flags = 0;364 int nr_addrs;365 int old_mac_control = priv->mac_control;366 367 if (netif_running(priv->dev))368 dev_flags |= priv->dev->flags;369 if (priv->mesh_dev && netif_running(priv->mesh_dev))370 dev_flags |= priv->mesh_dev->flags;371 372 if (dev_flags & IFF_PROMISC) {373 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;374 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |375 CMD_ACT_MAC_MULTICAST_ENABLE);376 goto out_set_mac_control;377 } else if (dev_flags & IFF_ALLMULTI) {378 do_allmulti:379 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;380 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |381 CMD_ACT_MAC_MULTICAST_ENABLE);382 goto out_set_mac_control;383 }384 385 /* Once for priv->dev, again for priv->mesh_dev if it exists */386 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);387 if (nr_addrs >= 0 && priv->mesh_dev)388 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);389 if (nr_addrs < 0)390 goto do_allmulti;391 392 if (nr_addrs) {393 int size = offsetof(struct cmd_ds_mac_multicast_adr,394 maclist[6*nr_addrs]);395 396 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);397 mcast_cmd.hdr.size = cpu_to_le16(size);398 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);399 400 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);401 402 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;403 } else404 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;405 406 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |407 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);408 out_set_mac_control:409 if (priv->mac_control != old_mac_control)410 lbs_set_mac_control(priv);411}412 413static void lbs_set_mcast_worker(struct work_struct *work)414{415 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);416 lbs_update_mcast(priv);417}418 419void lbs_set_multicast_list(struct net_device *dev)420{421 struct lbs_private *priv = dev->ml_priv;422 423 schedule_work(&priv->mcast_work);424}425 426/**427 * lbs_thread - handles the major jobs in the LBS driver.428 * It handles all events generated by firmware, RX data received429 * from firmware and TX data sent from kernel.430 *431 * @data: A pointer to &lbs_thread structure432 * returns: 0433 */434static int lbs_thread(void *data)435{436 struct net_device *dev = data;437 struct lbs_private *priv = dev->ml_priv;438 wait_queue_entry_t wait;439 440 init_waitqueue_entry(&wait, current);441 442 for (;;) {443 int shouldsleep;444 u8 resp_idx;445 446 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",447 priv->currenttxskb, priv->dnld_sent);448 449 add_wait_queue(&priv->waitq, &wait);450 set_current_state(TASK_INTERRUPTIBLE);451 spin_lock_irq(&priv->driver_lock);452 453 if (kthread_should_stop())454 shouldsleep = 0; /* Bye */455 else if (priv->surpriseremoved)456 shouldsleep = 1; /* We need to wait until we're _told_ to die */457 else if (priv->psstate == PS_STATE_SLEEP)458 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */459 else if (priv->cmd_timed_out)460 shouldsleep = 0; /* Command timed out. Recover */461 else if (!priv->fw_ready)462 shouldsleep = 1; /* Firmware not ready. We're waiting for it */463 else if (priv->dnld_sent)464 shouldsleep = 1; /* Something is en route to the device already */465 else if (priv->tx_pending_len > 0)466 shouldsleep = 0; /* We've a packet to send */467 else if (priv->resp_len[priv->resp_idx])468 shouldsleep = 0; /* We have a command response */469 else if (priv->cur_cmd)470 shouldsleep = 1; /* Can't send a command; one already running */471 else if (!list_empty(&priv->cmdpendingq) &&472 !(priv->wakeup_dev_required))473 shouldsleep = 0; /* We have a command to send */474 else if (kfifo_len(&priv->event_fifo))475 shouldsleep = 0; /* We have an event to process */476 else477 shouldsleep = 1; /* No command */478 479 if (shouldsleep) {480 lbs_deb_thread("sleeping, connect_status %d, "481 "psmode %d, psstate %d\n",482 priv->connect_status,483 priv->psmode, priv->psstate);484 spin_unlock_irq(&priv->driver_lock);485 schedule();486 } else487 spin_unlock_irq(&priv->driver_lock);488 489 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",490 priv->currenttxskb, priv->dnld_sent);491 492 set_current_state(TASK_RUNNING);493 remove_wait_queue(&priv->waitq, &wait);494 495 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",496 priv->currenttxskb, priv->dnld_sent);497 498 if (kthread_should_stop()) {499 lbs_deb_thread("break from main thread\n");500 break;501 }502 503 if (priv->surpriseremoved) {504 lbs_deb_thread("adapter removed; waiting to die...\n");505 continue;506 }507 508 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",509 priv->currenttxskb, priv->dnld_sent);510 511 /* Process any pending command response */512 spin_lock_irq(&priv->driver_lock);513 resp_idx = priv->resp_idx;514 if (priv->resp_len[resp_idx]) {515 spin_unlock_irq(&priv->driver_lock);516 lbs_process_command_response(priv,517 priv->resp_buf[resp_idx],518 priv->resp_len[resp_idx]);519 spin_lock_irq(&priv->driver_lock);520 priv->resp_len[resp_idx] = 0;521 }522 spin_unlock_irq(&priv->driver_lock);523 524 /* Process hardware events, e.g. card removed, link lost */525 spin_lock_irq(&priv->driver_lock);526 while (kfifo_len(&priv->event_fifo)) {527 u32 event;528 529 if (kfifo_out(&priv->event_fifo,530 (unsigned char *) &event, sizeof(event)) !=531 sizeof(event))532 break;533 spin_unlock_irq(&priv->driver_lock);534 lbs_process_event(priv, event);535 spin_lock_irq(&priv->driver_lock);536 }537 spin_unlock_irq(&priv->driver_lock);538 539 if (priv->wakeup_dev_required) {540 lbs_deb_thread("Waking up device...\n");541 /* Wake up device */542 if (priv->exit_deep_sleep(priv))543 lbs_deb_thread("Wakeup device failed\n");544 continue;545 }546 547 /* command timeout stuff */548 if (priv->cmd_timed_out && priv->cur_cmd) {549 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;550 551 netdev_info(dev, "Timeout submitting command 0x%04x\n",552 le16_to_cpu(cmdnode->cmdbuf->command));553 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);554 555 /* Reset card, but only when it isn't in the process556 * of being shutdown anyway. */557 if (!dev->dismantle && priv->reset_card)558 priv->reset_card(priv);559 }560 priv->cmd_timed_out = 0;561 562 if (!priv->fw_ready)563 continue;564 565 /* Check if we need to confirm Sleep Request received previously */566 if (priv->psstate == PS_STATE_PRE_SLEEP &&567 !priv->dnld_sent && !priv->cur_cmd) {568 if (priv->connect_status == LBS_CONNECTED) {569 lbs_deb_thread("pre-sleep, currenttxskb %p, "570 "dnld_sent %d, cur_cmd %p\n",571 priv->currenttxskb, priv->dnld_sent,572 priv->cur_cmd);573 574 lbs_ps_confirm_sleep(priv);575 } else {576 /* workaround for firmware sending577 * deauth/linkloss event immediately578 * after sleep request; remove this579 * after firmware fixes it580 */581 priv->psstate = PS_STATE_AWAKE;582 netdev_alert(dev,583 "ignore PS_SleepConfirm in non-connected state\n");584 }585 }586 587 /* The PS state is changed during processing of Sleep Request588 * event above589 */590 if ((priv->psstate == PS_STATE_SLEEP) ||591 (priv->psstate == PS_STATE_PRE_SLEEP))592 continue;593 594 if (priv->is_deep_sleep)595 continue;596 597 /* Execute the next command */598 if (!priv->dnld_sent && !priv->cur_cmd)599 lbs_execute_next_command(priv);600 601 spin_lock_irq(&priv->driver_lock);602 if (!priv->dnld_sent && priv->tx_pending_len > 0) {603 int ret = priv->hw_host_to_card(priv, MVMS_DAT,604 priv->tx_pending_buf,605 priv->tx_pending_len);606 if (ret) {607 lbs_deb_tx("host_to_card failed %d\n", ret);608 priv->dnld_sent = DNLD_RES_RECEIVED;609 } else {610 mod_timer(&priv->tx_lockup_timer,611 jiffies + (HZ * 5));612 }613 priv->tx_pending_len = 0;614 if (!priv->currenttxskb) {615 /* We can wake the queues immediately if we aren't616 waiting for TX feedback */617 if (priv->connect_status == LBS_CONNECTED)618 netif_wake_queue(priv->dev);619 if (priv->mesh_dev &&620 netif_running(priv->mesh_dev))621 netif_wake_queue(priv->mesh_dev);622 }623 }624 spin_unlock_irq(&priv->driver_lock);625 }626 627 del_timer(&priv->command_timer);628 del_timer(&priv->tx_lockup_timer);629 del_timer(&priv->auto_deepsleep_timer);630 631 return 0;632}633 634/**635 * lbs_setup_firmware - gets the HW spec from the firmware and sets636 * some basic parameters637 *638 * @priv: A pointer to &struct lbs_private structure639 * returns: 0 or -1640 */641static int lbs_setup_firmware(struct lbs_private *priv)642{643 int ret = -1;644 s16 curlevel = 0, minlevel = 0, maxlevel = 0;645 646 /* Read MAC address from firmware */647 eth_broadcast_addr(priv->current_addr);648 ret = lbs_update_hw_spec(priv);649 if (ret)650 goto done;651 652 /* Read power levels if available */653 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);654 if (ret == 0) {655 priv->txpower_cur = curlevel;656 priv->txpower_min = minlevel;657 priv->txpower_max = maxlevel;658 }659 660 /* Send cmd to FW to enable 11D function */661 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);662 if (ret)663 goto done;664 665 ret = lbs_set_mac_control_sync(priv);666done:667 return ret;668}669 670int lbs_suspend(struct lbs_private *priv)671{672 int ret;673 674 if (priv->is_deep_sleep) {675 ret = lbs_set_deep_sleep(priv, 0);676 if (ret) {677 netdev_err(priv->dev,678 "deep sleep cancellation failed: %d\n", ret);679 return ret;680 }681 priv->deep_sleep_required = 1;682 }683 684 ret = lbs_set_host_sleep(priv, 1);685 686 netif_device_detach(priv->dev);687 if (priv->mesh_dev)688 netif_device_detach(priv->mesh_dev);689 690 return ret;691}692EXPORT_SYMBOL_GPL(lbs_suspend);693 694int lbs_resume(struct lbs_private *priv)695{696 int ret;697 698 ret = lbs_set_host_sleep(priv, 0);699 700 netif_device_attach(priv->dev);701 if (priv->mesh_dev)702 netif_device_attach(priv->mesh_dev);703 704 if (priv->deep_sleep_required) {705 priv->deep_sleep_required = 0;706 ret = lbs_set_deep_sleep(priv, 1);707 if (ret)708 netdev_err(priv->dev,709 "deep sleep activation failed: %d\n", ret);710 }711 712 if (priv->setup_fw_on_resume)713 ret = lbs_setup_firmware(priv);714 715 return ret;716}717EXPORT_SYMBOL_GPL(lbs_resume);718 719/**720 * lbs_cmd_timeout_handler - handles the timeout of command sending.721 * It will re-send the same command again.722 *723 * @t: Context from which to retrieve a &struct lbs_private pointer724 */725static void lbs_cmd_timeout_handler(struct timer_list *t)726{727 struct lbs_private *priv = from_timer(priv, t, command_timer);728 unsigned long flags;729 730 spin_lock_irqsave(&priv->driver_lock, flags);731 732 if (!priv->cur_cmd)733 goto out;734 735 netdev_info(priv->dev, "command 0x%04x timed out\n",736 le16_to_cpu(priv->cur_cmd->cmdbuf->command));737 738 priv->cmd_timed_out = 1;739 740 /*741 * If the device didn't even acknowledge the command, reset the state742 * so that we don't block all future commands due to this one timeout.743 */744 if (priv->dnld_sent == DNLD_CMD_SENT)745 priv->dnld_sent = DNLD_RES_RECEIVED;746 747 wake_up(&priv->waitq);748out:749 spin_unlock_irqrestore(&priv->driver_lock, flags);750}751 752/**753 * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames754 * to the hardware. This is known to frequently happen with SD8686 when755 * waking up after a Wake-on-WLAN-triggered resume.756 *757 * @t: Context from which to retrieve a &struct lbs_private pointer758 */759static void lbs_tx_lockup_handler(struct timer_list *t)760{761 struct lbs_private *priv = from_timer(priv, t, tx_lockup_timer);762 unsigned long flags;763 764 spin_lock_irqsave(&priv->driver_lock, flags);765 766 netdev_info(priv->dev, "TX lockup detected\n");767 if (priv->reset_card)768 priv->reset_card(priv);769 770 priv->dnld_sent = DNLD_RES_RECEIVED;771 wake_up_interruptible(&priv->waitq);772 773 spin_unlock_irqrestore(&priv->driver_lock, flags);774}775 776/**777 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when778 * timer expires and no activity (command, event, data etc.) is detected.779 * @t: Context from which to retrieve a &struct lbs_private pointer780 * returns: N/A781 */782static void auto_deepsleep_timer_fn(struct timer_list *t)783{784 struct lbs_private *priv = from_timer(priv, t, auto_deepsleep_timer);785 786 if (priv->is_activity_detected) {787 priv->is_activity_detected = 0;788 } else {789 if (priv->is_auto_deep_sleep_enabled &&790 (!priv->wakeup_dev_required) &&791 (priv->connect_status != LBS_CONNECTED)) {792 struct cmd_header cmd;793 794 lbs_deb_main("Entering auto deep sleep mode...\n");795 memset(&cmd, 0, sizeof(cmd));796 cmd.size = cpu_to_le16(sizeof(cmd));797 lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,798 sizeof(cmd));799 }800 }801 mod_timer(&priv->auto_deepsleep_timer , jiffies +802 (priv->auto_deep_sleep_timeout * HZ)/1000);803}804 805int lbs_enter_auto_deep_sleep(struct lbs_private *priv)806{807 priv->is_auto_deep_sleep_enabled = 1;808 if (priv->is_deep_sleep)809 priv->wakeup_dev_required = 1;810 mod_timer(&priv->auto_deepsleep_timer ,811 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);812 813 return 0;814}815 816int lbs_exit_auto_deep_sleep(struct lbs_private *priv)817{818 priv->is_auto_deep_sleep_enabled = 0;819 priv->auto_deep_sleep_timeout = 0;820 del_timer(&priv->auto_deepsleep_timer);821 822 return 0;823}824 825static int lbs_init_adapter(struct lbs_private *priv)826{827 int ret;828 829 eth_broadcast_addr(priv->current_addr);830 831 priv->connect_status = LBS_DISCONNECTED;832 priv->channel = DEFAULT_AD_HOC_CHANNEL;833 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;834 priv->radio_on = 1;835 priv->psmode = LBS802_11POWERMODECAM;836 priv->psstate = PS_STATE_FULL_POWER;837 priv->is_deep_sleep = 0;838 priv->is_auto_deep_sleep_enabled = 0;839 priv->deep_sleep_required = 0;840 priv->wakeup_dev_required = 0;841 init_waitqueue_head(&priv->ds_awake_q);842 init_waitqueue_head(&priv->scan_q);843 priv->authtype_auto = 1;844 priv->is_host_sleep_configured = 0;845 priv->is_host_sleep_activated = 0;846 init_waitqueue_head(&priv->host_sleep_q);847 init_waitqueue_head(&priv->fw_waitq);848 mutex_init(&priv->lock);849 850 timer_setup(&priv->command_timer, lbs_cmd_timeout_handler, 0);851 timer_setup(&priv->tx_lockup_timer, lbs_tx_lockup_handler, 0);852 timer_setup(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn, 0);853 854 INIT_LIST_HEAD(&priv->cmdfreeq);855 INIT_LIST_HEAD(&priv->cmdpendingq);856 857 spin_lock_init(&priv->driver_lock);858 859 /* Allocate the command buffers */860 if (lbs_allocate_cmd_buffer(priv)) {861 pr_err("Out of memory allocating command buffers\n");862 ret = -ENOMEM;863 goto out;864 }865 priv->resp_idx = 0;866 priv->resp_len[0] = priv->resp_len[1] = 0;867 868 /* Create the event FIFO */869 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);870 if (ret) {871 pr_err("Out of memory allocating event FIFO buffer\n");872 lbs_free_cmd_buffer(priv);873 goto out;874 }875 876out:877 return ret;878}879 880static void lbs_free_adapter(struct lbs_private *priv)881{882 lbs_free_cmd_buffer(priv);883 kfifo_free(&priv->event_fifo);884 del_timer(&priv->command_timer);885 del_timer(&priv->tx_lockup_timer);886 del_timer(&priv->auto_deepsleep_timer);887}888 889static const struct net_device_ops lbs_netdev_ops = {890 .ndo_open = lbs_dev_open,891 .ndo_stop = lbs_eth_stop,892 .ndo_start_xmit = lbs_hard_start_xmit,893 .ndo_set_mac_address = lbs_set_mac_address,894 .ndo_set_rx_mode = lbs_set_multicast_list,895 .ndo_validate_addr = eth_validate_addr,896};897 898/**899 * lbs_add_card - adds the card. It will probe the900 * card, allocate the lbs_priv and initialize the device.901 *902 * @card: A pointer to card903 * @dmdev: A pointer to &struct device904 * returns: A pointer to &struct lbs_private structure905 */906struct lbs_private *lbs_add_card(void *card, struct device *dmdev)907{908 struct net_device *dev;909 struct wireless_dev *wdev;910 struct lbs_private *priv = NULL;911 int err;912 913 /* Allocate an Ethernet device and register it */914 wdev = lbs_cfg_alloc(dmdev);915 if (IS_ERR(wdev)) {916 err = PTR_ERR(wdev);917 pr_err("cfg80211 init failed\n");918 goto err_cfg;919 }920 921 wdev->iftype = NL80211_IFTYPE_STATION;922 priv = wdev_priv(wdev);923 priv->wdev = wdev;924 925 err = lbs_init_adapter(priv);926 if (err) {927 pr_err("failed to initialize adapter structure\n");928 goto err_wdev;929 }930 931 dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);932 if (!dev) {933 err = -ENOMEM;934 dev_err(dmdev, "no memory for network device instance\n");935 goto err_adapter;936 }937 938 dev->ieee80211_ptr = wdev;939 dev->ml_priv = priv;940 SET_NETDEV_DEV(dev, dmdev);941 wdev->netdev = dev;942 priv->dev = dev;943 944 dev->netdev_ops = &lbs_netdev_ops;945 dev->watchdog_timeo = 5 * HZ;946 dev->ethtool_ops = &lbs_ethtool_ops;947 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;948 949 priv->card = card;950 951 strcpy(dev->name, "wlan%d");952 953 lbs_deb_thread("Starting main thread...\n");954 init_waitqueue_head(&priv->waitq);955 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");956 if (IS_ERR(priv->main_thread)) {957 err = PTR_ERR(priv->main_thread);958 lbs_deb_thread("Error creating main thread.\n");959 goto err_ndev;960 }961 962 priv->work_thread = create_singlethread_workqueue("lbs_worker");963 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);964 965 priv->wol_criteria = EHS_REMOVE_WAKEUP;966 priv->wol_gpio = 0xff;967 priv->wol_gap = 20;968 priv->ehs_remove_supported = true;969 970 return priv;971 972 err_ndev:973 free_netdev(dev);974 975 err_adapter:976 lbs_free_adapter(priv);977 978 err_wdev:979 lbs_cfg_free(priv);980 981 err_cfg:982 return ERR_PTR(err);983}984EXPORT_SYMBOL_GPL(lbs_add_card);985 986 987void lbs_remove_card(struct lbs_private *priv)988{989 struct net_device *dev = priv->dev;990 991 lbs_remove_mesh(priv);992 993 if (priv->wiphy_registered)994 lbs_scan_deinit(priv);995 996 lbs_wait_for_firmware_load(priv);997 998 /* worker thread destruction blocks on the in-flight command which999 * should have been cleared already in lbs_stop_card().1000 */1001 lbs_deb_main("destroying worker thread\n");1002 destroy_workqueue(priv->work_thread);1003 lbs_deb_main("done destroying worker thread\n");1004 1005 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {1006 priv->psmode = LBS802_11POWERMODECAM;1007 /* no need to wakeup if already woken up,1008 * on suspend, this exit ps command is not processed1009 * the driver hangs1010 */1011 if (priv->psstate != PS_STATE_FULL_POWER)1012 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);1013 }1014 1015 if (priv->is_deep_sleep) {1016 priv->is_deep_sleep = 0;1017 wake_up_interruptible(&priv->ds_awake_q);1018 }1019 1020 priv->is_host_sleep_configured = 0;1021 priv->is_host_sleep_activated = 0;1022 wake_up_interruptible(&priv->host_sleep_q);1023 1024 /* Stop the thread servicing the interrupts */1025 priv->surpriseremoved = 1;1026 kthread_stop(priv->main_thread);1027 1028 lbs_free_adapter(priv);1029 lbs_cfg_free(priv);1030 free_netdev(dev);1031}1032EXPORT_SYMBOL_GPL(lbs_remove_card);1033 1034 1035int lbs_rtap_supported(struct lbs_private *priv)1036{1037 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)1038 return 1;1039 1040 /* newer firmware use a capability mask */1041 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&1042 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));1043}1044 1045 1046int lbs_start_card(struct lbs_private *priv)1047{1048 struct net_device *dev = priv->dev;1049 int ret;1050 1051 /* poke the firmware */1052 ret = lbs_setup_firmware(priv);1053 if (ret)1054 goto done;1055 1056 if (!lbs_disablemesh)1057 lbs_init_mesh(priv);1058 else1059 pr_info("%s: mesh disabled\n", dev->name);1060 1061 ret = lbs_cfg_register(priv);1062 if (ret) {1063 pr_err("cannot register device\n");1064 goto done;1065 }1066 1067 if (lbs_mesh_activated(priv))1068 lbs_start_mesh(priv);1069 1070 lbs_debugfs_init_one(priv, dev);1071 1072 netdev_info(dev, "Marvell WLAN 802.11 adapter\n");1073 1074 ret = 0;1075 1076done:1077 return ret;1078}1079EXPORT_SYMBOL_GPL(lbs_start_card);1080 1081 1082void lbs_stop_card(struct lbs_private *priv)1083{1084 struct net_device *dev;1085 1086 if (!priv)1087 return;1088 dev = priv->dev;1089 1090 /* If the netdev isn't registered, it means that lbs_start_card() was1091 * never called so we have nothing to do here. */1092 if (dev->reg_state != NETREG_REGISTERED)1093 return;1094 1095 netif_stop_queue(dev);1096 netif_carrier_off(dev);1097 1098 lbs_debugfs_remove_one(priv);1099 lbs_deinit_mesh(priv);1100 unregister_netdev(dev);1101}1102EXPORT_SYMBOL_GPL(lbs_stop_card);1103 1104 1105void lbs_queue_event(struct lbs_private *priv, u32 event)1106{1107 unsigned long flags;1108 1109 spin_lock_irqsave(&priv->driver_lock, flags);1110 1111 if (priv->psstate == PS_STATE_SLEEP)1112 priv->psstate = PS_STATE_AWAKE;1113 1114 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));1115 1116 wake_up(&priv->waitq);1117 1118 spin_unlock_irqrestore(&priv->driver_lock, flags);1119}1120EXPORT_SYMBOL_GPL(lbs_queue_event);1121 1122void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)1123{1124 if (priv->psstate == PS_STATE_SLEEP)1125 priv->psstate = PS_STATE_AWAKE;1126 1127 /* Swap buffers by flipping the response index */1128 BUG_ON(resp_idx > 1);1129 priv->resp_idx = resp_idx;1130 1131 wake_up(&priv->waitq);1132}1133EXPORT_SYMBOL_GPL(lbs_notify_command_response);1134 1135static int __init lbs_init_module(void)1136{1137 memset(&confirm_sleep, 0, sizeof(confirm_sleep));1138 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);1139 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));1140 confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);1141 lbs_debugfs_init();1142 1143 return 0;1144}1145 1146static void __exit lbs_exit_module(void)1147{1148 lbs_debugfs_remove();1149}1150 1151module_init(lbs_init_module);1152module_exit(lbs_exit_module);1153 1154MODULE_DESCRIPTION("Libertas WLAN Driver Library");1155MODULE_AUTHOR("Marvell International Ltd.");1156MODULE_LICENSE("GPL");1157