/****************************************************************************** * * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. * * Portions of this file are derived from the ipw3945 project, as well * as portions of the ieee80211 subsystem header files. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include /* TODO: remove include to PCI*.h when no PCI will be needed here */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "iwl-eeprom.h" #include "iwl-dev.h" #include "iwl-core.h" #include "iwl-io.h" #include "iwl-helpers.h" #include "iwl-sta.h" #include "iwl-agn-calib.h" #include "iwl-agn.h" #include "iwl-pci.h" /****************************************************************************** * * module boiler plate * ******************************************************************************/ /* * module name, copyright, version, etc. */ #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" #ifdef CONFIG_IWLWIFI_DEBUG #define VD "d" #else #define VD #endif #define DRV_VERSION IWLWIFI_VERSION VD MODULE_DESCRIPTION(DRV_DESCRIPTION); MODULE_VERSION(DRV_VERSION); MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); static int iwlagn_ant_coupling; static bool iwlagn_bt_ch_announce = 1; void iwl_update_chain_flags(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; if (priv->cfg->ops->hcmd->set_rxon_chain) { for_each_context(priv, ctx) { priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); if (ctx->active.rx_chain != ctx->staging.rx_chain) iwlagn_commit_rxon(priv, ctx); } } } /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ static void iwl_set_beacon_tim(struct iwl_priv *priv, struct iwl_tx_beacon_cmd *tx_beacon_cmd, u8 *beacon, u32 frame_size) { u16 tim_idx; struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; /* * The index is relative to frame start but we start looking at the * variable-length part of the beacon. */ tim_idx = mgmt->u.beacon.variable - beacon; /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ while ((tim_idx < (frame_size - 2)) && (beacon[tim_idx] != WLAN_EID_TIM)) tim_idx += beacon[tim_idx+1] + 2; /* If TIM field was found, set variables */ if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); tx_beacon_cmd->tim_size = beacon[tim_idx+1]; } else IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); } int iwlagn_send_beacon_cmd(struct iwl_priv *priv) { struct iwl_tx_beacon_cmd *tx_beacon_cmd; struct iwl_host_cmd cmd = { .id = REPLY_TX_BEACON, }; u32 frame_size; u32 rate_flags; u32 rate; /* * We have to set up the TX command, the TX Beacon command, and the * beacon contents. */ lockdep_assert_held(&priv->mutex); if (!priv->beacon_ctx) { IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); return 0; } if (WARN_ON(!priv->beacon_skb)) return -EINVAL; /* Allocate beacon command */ if (!priv->beacon_cmd) priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); tx_beacon_cmd = priv->beacon_cmd; if (!tx_beacon_cmd) return -ENOMEM; frame_size = priv->beacon_skb->len; /* Set up TX command fields */ tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; /* Set up TX beacon command fields */ iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, frame_size); /* Set up packet rate and flags */ rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx); priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, priv->hw_params.valid_tx_ant); rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE)) rate_flags |= RATE_MCS_CCK_MSK; tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); /* Submit command */ cmd.len[0] = sizeof(*tx_beacon_cmd); cmd.data[0] = tx_beacon_cmd; cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; cmd.len[1] = frame_size; cmd.data[1] = priv->beacon_skb->data; cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; return iwl_send_cmd_sync(priv, &cmd); } static void iwl_bg_beacon_update(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, beacon_update); struct sk_buff *beacon; mutex_lock(&priv->mutex); if (!priv->beacon_ctx) { IWL_ERR(priv, "updating beacon w/o beacon context!\n"); goto out; } if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { /* * The ucode will send beacon notifications even in * IBSS mode, but we don't want to process them. But * we need to defer the type check to here due to * requiring locking around the beacon_ctx access. */ goto out; } /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); if (!beacon) { IWL_ERR(priv, "update beacon failed -- keeping old\n"); goto out; } /* new beacon skb is allocated every time; dispose previous.*/ dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = beacon; iwlagn_send_beacon_cmd(priv); out: mutex_unlock(&priv->mutex); } static void iwl_bg_bt_runtime_config(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, bt_runtime_config); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; priv->cfg->ops->hcmd->send_bt_config(priv); } static void iwl_bg_bt_full_concurrency(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, bt_full_concurrency); struct iwl_rxon_context *ctx; mutex_lock(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) goto out; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) goto out; IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", priv->bt_full_concurrent ? "full concurrency" : "3-wire"); /* * LQ & RXON updated cmds must be sent before BT Config cmd * to avoid 3-wire collisions */ for_each_context(priv, ctx) { if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); iwlagn_commit_rxon(priv, ctx); } priv->cfg->ops->hcmd->send_bt_config(priv); out: mutex_unlock(&priv->mutex); } /** * iwl_bg_statistics_periodic - Timer callback to queue statistics * * This callback is provided in order to send a statistics request. * * This timer function is continually reset to execute within * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION * was received. We need to ensure we receive the statistics in order * to update the temperature used for calibrating the TXPOWER. */ static void iwl_bg_statistics_periodic(unsigned long data) { struct iwl_priv *priv = (struct iwl_priv *)data; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; iwl_send_statistics_request(priv, CMD_ASYNC, false); } static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, u32 start_idx, u32 num_events, u32 mode) { u32 i; u32 ptr; /* SRAM byte address of log data */ u32 ev, time, data; /* event log data */ unsigned long reg_flags; if (mode == 0) ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); else ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); /* Make sure device is powered up for SRAM reads */ spin_lock_irqsave(&priv->reg_lock, reg_flags); if (iwl_grab_nic_access(priv)) { spin_unlock_irqrestore(&priv->reg_lock, reg_flags); return; } /* Set starting address; reads will auto-increment */ iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr); rmb(); /* * "time" is actually "data" for mode 0 (no timestamp). * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT); time = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (mode == 0) { trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev); } else { data = iwl_read32(priv, HBUS_TARG_MEM_RDAT); trace_iwlwifi_dev_ucode_cont_event(priv, time, data, ev); } } /* Allow device to power down */ iwl_release_nic_access(priv); spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } static void iwl_continuous_event_trace(struct iwl_priv *priv) { u32 capacity; /* event log capacity in # entries */ u32 base; /* SRAM byte address of event log header */ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ u32 num_wraps; /* # times uCode wrapped to top of log */ u32 next_entry; /* index of next entry to be written by uCode */ base = priv->device_pointers.error_event_table; if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { capacity = iwl_read_targ_mem(priv, base); num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); } else return; if (num_wraps == priv->event_log.num_wraps) { iwl_print_cont_event_trace(priv, base, priv->event_log.next_entry, next_entry - priv->event_log.next_entry, mode); priv->event_log.non_wraps_count++; } else { if ((num_wraps - priv->event_log.num_wraps) > 1) priv->event_log.wraps_more_count++; else priv->event_log.wraps_once_count++; trace_iwlwifi_dev_ucode_wrap_event(priv, num_wraps - priv->event_log.num_wraps, next_entry, priv->event_log.next_entry); if (next_entry < priv->event_log.next_entry) { iwl_print_cont_event_trace(priv, base, priv->event_log.next_entry, capacity - priv->event_log.next_entry, mode); iwl_print_cont_event_trace(priv, base, 0, next_entry, mode); } else { iwl_print_cont_event_trace(priv, base, next_entry, capacity - next_entry, mode); iwl_print_cont_event_trace(priv, base, 0, next_entry, mode); } } priv->event_log.num_wraps = num_wraps; priv->event_log.next_entry = next_entry; } /** * iwl_bg_ucode_trace - Timer callback to log ucode event * * The timer is continually set to execute every * UCODE_TRACE_PERIOD milliseconds after the last timer expired * this function is to perform continuous uCode event logging operation * if enabled */ static void iwl_bg_ucode_trace(unsigned long data) { struct iwl_priv *priv = (struct iwl_priv *)data; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (priv->event_log.ucode_trace) { iwl_continuous_event_trace(priv); /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ mod_timer(&priv->ucode_trace, jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); } } static void iwl_bg_tx_flush(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, tx_flush); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* do nothing if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL); } /** * iwl_rx_handle - Main entry function for receiving responses from uCode * * Uses the priv->rx_handlers callback function array to invoke * the appropriate handlers, including command responses, * frame-received notifications, and other notifications. */ static void iwl_rx_handle(struct iwl_priv *priv) { struct iwl_rx_mem_buffer *rxb; struct iwl_rx_packet *pkt; struct iwl_rx_queue *rxq = &priv->rxq; u32 r, i; int reclaim; unsigned long flags; u8 fill_rx = 0; u32 count = 8; int total_empty; /* uCode's read index (stored in shared DRAM) indicates the last Rx * buffer that the driver may process (last buffer filled by ucode). */ r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; i = rxq->read; /* Rx interrupt, but nothing sent from uCode */ if (i == r) IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i); /* calculate total frames need to be restock after handling RX */ total_empty = r - rxq->write_actual; if (total_empty < 0) total_empty += RX_QUEUE_SIZE; if (total_empty > (RX_QUEUE_SIZE / 2)) fill_rx = 1; while (i != r) { int len; rxb = rxq->queue[i]; /* If an RXB doesn't have a Rx queue slot associated with it, * then a bug has been introduced in the queue refilling * routines -- catch it here */ if (WARN_ON(rxb == NULL)) { i = (i + 1) & RX_QUEUE_MASK; continue; } rxq->queue[i] = NULL; pci_unmap_page(priv->pci_dev, rxb->page_dma, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); pkt = rxb_addr(rxb); len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; len += sizeof(u32); /* account for status word */ trace_iwlwifi_dev_rx(priv, pkt, len); /* Reclaim a command buffer only if this packet is a response * to a (driver-originated) command. * If the packet (e.g. Rx frame) originated from uCode, * there is no command buffer to reclaim. * Ucode should set SEQ_RX_FRAME bit if ucode-originated, * but apparently a few don't get set; catch them here. */ reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && (pkt->hdr.cmd != REPLY_RX_PHY_CMD) && (pkt->hdr.cmd != REPLY_RX) && (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) && (pkt->hdr.cmd != REPLY_COMPRESSED_BA) && (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && (pkt->hdr.cmd != REPLY_TX); /* * Do the notification wait before RX handlers so * even if the RX handler consumes the RXB we have * access to it in the notification wait entry. */ if (!list_empty(&priv->_agn.notif_waits)) { struct iwl_notification_wait *w; spin_lock(&priv->_agn.notif_wait_lock); list_for_each_entry(w, &priv->_agn.notif_waits, list) { if (w->cmd == pkt->hdr.cmd) { w->triggered = true; if (w->fn) w->fn(priv, pkt, w->fn_data); } } spin_unlock(&priv->_agn.notif_wait_lock); wake_up_all(&priv->_agn.notif_waitq); } if (priv->pre_rx_handler) priv->pre_rx_handler(priv, rxb); /* Based on type of command response or notification, * handle those that need handling via function in * rx_handlers table. See iwl_setup_rx_handlers() */ if (priv->rx_handlers[pkt->hdr.cmd]) { IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); priv->isr_stats.rx_handlers[pkt->hdr.cmd]++; priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); } else { /* No handling needed */ IWL_DEBUG_RX(priv, "r %d i %d No handler needed for %s, 0x%02x\n", r, i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); } /* * XXX: After here, we should always check rxb->page * against NULL before touching it or its virtual * memory (pkt). Because some rx_handler might have * already taken or freed the pages. */ if (reclaim) { /* Invoke any callbacks, transfer the buffer to caller, * and fire off the (possibly) blocking iwl_send_cmd() * as we reclaim the driver command queue */ if (rxb->page) iwl_tx_cmd_complete(priv, rxb); else IWL_WARN(priv, "Claim null rxb?\n"); } /* Reuse the page if possible. For notification packets and * SKBs that fail to Rx correctly, add them back into the * rx_free list for reuse later. */ spin_lock_irqsave(&rxq->lock, flags); if (rxb->page != NULL) { rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page, 0, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); list_add_tail(&rxb->list, &rxq->rx_free); rxq->free_count++; } else list_add_tail(&rxb->list, &rxq->rx_used); spin_unlock_irqrestore(&rxq->lock, flags); i = (i + 1) & RX_QUEUE_MASK; /* If there are a lot of unused frames, * restock the Rx queue so ucode wont assert. */ if (fill_rx) { count++; if (count >= 8) { rxq->read = i; iwlagn_rx_replenish_now(priv); count = 0; } } } /* Backtrack one entry */ rxq->read = i; if (fill_rx) iwlagn_rx_replenish_now(priv); else iwlagn_rx_queue_restock(priv); } /* tasklet for iwlagn interrupt */ static void iwl_irq_tasklet(struct iwl_priv *priv) { u32 inta = 0; u32 handled = 0; unsigned long flags; u32 i; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_mask; #endif spin_lock_irqsave(&priv->lock, flags); /* Ack/clear/reset pending uCode interrupts. * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, */ /* There is a hardware bug in the interrupt mask function that some * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if * they are disabled in the CSR_INT_MASK register. Furthermore the * ICT interrupt handling mechanism has another bug that might cause * these unmasked interrupts fail to be detected. We workaround the * hardware bugs here by ACKing all the possible interrupts so that * interrupt coalescing can still be achieved. */ iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask); inta = priv->_agn.inta; #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & IWL_DL_ISR) { /* just for debug */ inta_mask = iwl_read32(priv, CSR_INT_MASK); IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ", inta, inta_mask); } #endif spin_unlock_irqrestore(&priv->lock, flags); /* saved interrupt in inta variable now we can reset priv->_agn.inta */ priv->_agn.inta = 0; /* Now service all interrupt bits discovered above. */ if (inta & CSR_INT_BIT_HW_ERR) { IWL_ERR(priv, "Hardware error detected. Restarting.\n"); /* Tell the device to stop sending interrupts */ iwl_disable_interrupts(priv); priv->isr_stats.hw++; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_HW_ERR; return; } #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { /* NIC fires this, but we don't use it, redundant with WAKEUP */ if (inta & CSR_INT_BIT_SCD) { IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " "the frame/frames.\n"); priv->isr_stats.sch++; } /* Alive notification via Rx interrupt will do the real work */ if (inta & CSR_INT_BIT_ALIVE) { IWL_DEBUG_ISR(priv, "Alive interrupt\n"); priv->isr_stats.alive++; } } #endif /* Safely ignore these bits for debug checks below */ inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); /* HW RF KILL switch toggled */ if (inta & CSR_INT_BIT_RF_KILL) { int hw_rf_kill = 0; if (!(iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) hw_rf_kill = 1; IWL_WARN(priv, "RF_KILL bit toggled to %s.\n", hw_rf_kill ? "disable radio" : "enable radio"); priv->isr_stats.rfkill++; /* driver only loads ucode once setting the interface up. * the driver allows loading the ucode even if the radio * is killed. Hence update the killswitch state here. The * rfkill handler will care about restarting if needed. */ if (!test_bit(STATUS_ALIVE, &priv->status)) { if (hw_rf_kill) set_bit(STATUS_RF_KILL_HW, &priv->status); else clear_bit(STATUS_RF_KILL_HW, &priv->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill); } handled |= CSR_INT_BIT_RF_KILL; } /* Chip got too hot and stopped itself */ if (inta & CSR_INT_BIT_CT_KILL) { IWL_ERR(priv, "Microcode CT kill error detected.\n"); priv->isr_stats.ctkill++; handled |= CSR_INT_BIT_CT_KILL; } /* Error detected by uCode */ if (inta & CSR_INT_BIT_SW_ERR) { IWL_ERR(priv, "Microcode SW error detected. " " Restarting 0x%X.\n", inta); priv->isr_stats.sw++; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_SW_ERR; } /* uCode wakes up after power-down sleep */ if (inta & CSR_INT_BIT_WAKEUP) { IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); iwl_rx_queue_update_write_ptr(priv, &priv->rxq); for (i = 0; i < priv->hw_params.max_txq_num; i++) iwl_txq_update_write_ptr(priv, &priv->txq[i]); priv->isr_stats.wakeup++; handled |= CSR_INT_BIT_WAKEUP; } /* All uCode command responses, including Tx command responses, * Rx "responses" (frame-received notification), and other * notifications from uCode come through here*/ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX | CSR_INT_BIT_RX_PERIODIC)) { IWL_DEBUG_ISR(priv, "Rx interrupt\n"); if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_RX_MASK); } if (inta & CSR_INT_BIT_RX_PERIODIC) { handled |= CSR_INT_BIT_RX_PERIODIC; iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC); } /* Sending RX interrupt require many steps to be done in the * the device: * 1- write interrupt to current index in ICT table. * 2- dma RX frame. * 3- update RX shared data to indicate last write index. * 4- send interrupt. * This could lead to RX race, driver could receive RX interrupt * but the shared data changes does not reflect this; * periodic interrupt will detect any dangling Rx activity. */ /* Disable periodic interrupt; we use it as just a one-shot. */ iwl_write8(priv, CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_DIS); iwl_rx_handle(priv); /* * Enable periodic interrupt in 8 msec only if we received * real RX interrupt (instead of just periodic int), to catch * any dangling Rx interrupt. If it was just the periodic * interrupt, there was no dangling Rx activity, and no need * to extend the periodic interrupt; one-shot is enough. */ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) iwl_write8(priv, CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_ENA); priv->isr_stats.rx++; } /* This "Tx" DMA channel is used only for loading uCode */ if (inta & CSR_INT_BIT_FH_TX) { iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK); IWL_DEBUG_ISR(priv, "uCode load interrupt\n"); priv->isr_stats.tx++; handled |= CSR_INT_BIT_FH_TX; /* Wake up uCode load routine, now that load is complete */ priv->ucode_write_complete = 1; wake_up_interruptible(&priv->wait_command_queue); } if (inta & ~handled) { IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); priv->isr_stats.unhandled++; } if (inta & ~(priv->inta_mask)) { IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", inta & ~priv->inta_mask); } /* Re-enable all interrupts */ /* only Re-enable if disabled by irq */ if (test_bit(STATUS_INT_ENABLED, &priv->status)) iwl_enable_interrupts(priv); /* Re-enable RF_KILL if it occurred */ else if (handled & CSR_INT_BIT_RF_KILL) iwl_enable_rfkill_int(priv); } /***************************************************************************** * * sysfs attributes * *****************************************************************************/ #ifdef CONFIG_IWLWIFI_DEBUG /* * The following adds a new attribute to the sysfs representation * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/) * used for controlling the debug level. * * See the level definitions in iwl for details. * * The debug_level being managed using sysfs below is a per device debug * level that is used instead of the global debug level if it (the per * device debug level) is set. */ static ssize_t show_debug_level(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv)); } static ssize_t store_debug_level(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; int ret; ret = strict_strtoul(buf, 0, &val); if (ret) IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf); else { priv->debug_level = val; if (iwl_alloc_traffic_mem(priv)) IWL_ERR(priv, "Not enough memory to generate traffic log\n"); } return strnlen(buf, count); } static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, show_debug_level, store_debug_level); #endif /* CONFIG_IWLWIFI_DEBUG */ static ssize_t show_temperature(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); if (!iwl_is_alive(priv)) return -EAGAIN; return sprintf(buf, "%d\n", priv->temperature); } static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); static ssize_t show_tx_power(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); if (!iwl_is_ready_rf(priv)) return sprintf(buf, "off\n"); else return sprintf(buf, "%d\n", priv->tx_power_user_lmt); } static ssize_t store_tx_power(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; int ret; ret = strict_strtoul(buf, 10, &val); if (ret) IWL_INFO(priv, "%s is not in decimal form.\n", buf); else { ret = iwl_set_tx_power(priv, val, false); if (ret) IWL_ERR(priv, "failed setting tx power (0x%d).\n", ret); else ret = count; } return ret; } static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); static struct attribute *iwl_sysfs_entries[] = { &dev_attr_temperature.attr, &dev_attr_tx_power.attr, #ifdef CONFIG_IWLWIFI_DEBUG &dev_attr_debug_level.attr, #endif NULL }; static struct attribute_group iwl_attribute_group = { .name = NULL, /* put in device directory */ .attrs = iwl_sysfs_entries, }; /****************************************************************************** * * uCode download functions * ******************************************************************************/ static void iwl_free_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc) { if (desc->v_addr) dma_free_coherent(&pci_dev->dev, desc->len, desc->v_addr, desc->p_addr); desc->v_addr = NULL; desc->len = 0; } static void iwl_free_fw_img(struct pci_dev *pci_dev, struct fw_img *img) { iwl_free_fw_desc(pci_dev, &img->code); iwl_free_fw_desc(pci_dev, &img->data); } static int iwl_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc, const void *data, size_t len) { if (!len) { desc->v_addr = NULL; return -EINVAL; } desc->v_addr = dma_alloc_coherent(&pci_dev->dev, len, &desc->p_addr, GFP_KERNEL); if (!desc->v_addr) return -ENOMEM; desc->len = len; memcpy(desc->v_addr, data, len); return 0; } static void iwl_dealloc_ucode_pci(struct iwl_priv *priv) { iwl_free_fw_img(priv->pci_dev, &priv->ucode_rt); iwl_free_fw_img(priv->pci_dev, &priv->ucode_init); } struct iwlagn_ucode_capabilities { u32 max_probe_length; u32 standard_phy_calibration_size; u32 flags; }; static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context); static int iwl_mac_setup_register(struct iwl_priv *priv, struct iwlagn_ucode_capabilities *capa); #define UCODE_EXPERIMENTAL_INDEX 100 #define UCODE_EXPERIMENTAL_TAG "exp" static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first) { const char *name_pre = priv->cfg->fw_name_pre; char tag[8]; if (first) { #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE priv->fw_index = UCODE_EXPERIMENTAL_INDEX; strcpy(tag, UCODE_EXPERIMENTAL_TAG); } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) { #endif priv->fw_index = priv->cfg->ucode_api_max; sprintf(tag, "%d", priv->fw_index); } else { priv->fw_index--; sprintf(tag, "%d", priv->fw_index); } if (priv->fw_index < priv->cfg->ucode_api_min) { IWL_ERR(priv, "no suitable firmware found!\n"); return -ENOENT; } sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode"); IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n", (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) ? "EXPERIMENTAL " : "", priv->firmware_name); return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name, &priv->pci_dev->dev, GFP_KERNEL, priv, iwl_ucode_callback); } struct iwlagn_firmware_pieces { const void *inst, *data, *init, *init_data; size_t inst_size, data_size, init_size, init_data_size; u32 build; u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr; u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr; }; static int iwlagn_load_legacy_firmware(struct iwl_priv *priv, const struct firmware *ucode_raw, struct iwlagn_firmware_pieces *pieces) { struct iwl_ucode_header *ucode = (void *)ucode_raw->data; u32 api_ver, hdr_size; const u8 *src; priv->ucode_ver = le32_to_cpu(ucode->ver); api_ver = IWL_UCODE_API(priv->ucode_ver); switch (api_ver) { default: hdr_size = 28; if (ucode_raw->size < hdr_size) { IWL_ERR(priv, "File size too small!\n"); return -EINVAL; } pieces->build = le32_to_cpu(ucode->u.v2.build); pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size); pieces->data_size = le32_to_cpu(ucode->u.v2.data_size); pieces->init_size = le32_to_cpu(ucode->u.v2.init_size); pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size); src = ucode->u.v2.data; break; case 0: case 1: case 2: hdr_size = 24; if (ucode_raw->size < hdr_size) { IWL_ERR(priv, "File size too small!\n"); return -EINVAL; } pieces->build = 0; pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size); pieces->data_size = le32_to_cpu(ucode->u.v1.data_size); pieces->init_size = le32_to_cpu(ucode->u.v1.init_size); pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size); src = ucode->u.v1.data; break; } /* Verify size of file vs. image size info in file's header */ if (ucode_raw->size != hdr_size + pieces->inst_size + pieces->data_size + pieces->init_size + pieces->init_data_size) { IWL_ERR(priv, "uCode file size %d does not match expected size\n", (int)ucode_raw->size); return -EINVAL; } pieces->inst = src; src += pieces->inst_size; pieces->data = src; src += pieces->data_size; pieces->init = src; src += pieces->init_size; pieces->init_data = src; src += pieces->init_data_size; return 0; } static int iwlagn_wanted_ucode_alternative = 1; static int iwlagn_load_firmware(struct iwl_priv *priv, const struct firmware *ucode_raw, struct iwlagn_firmware_pieces *pieces, struct iwlagn_ucode_capabilities *capa) { struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data; struct iwl_ucode_tlv *tlv; size_t len = ucode_raw->size; const u8 *data; int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp; u64 alternatives; u32 tlv_len; enum iwl_ucode_tlv_type tlv_type; const u8 *tlv_data; if (len < sizeof(*ucode)) { IWL_ERR(priv, "uCode has invalid length: %zd\n", len); return -EINVAL; } if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) { IWL_ERR(priv, "invalid uCode magic: 0X%x\n", le32_to_cpu(ucode->magic)); return -EINVAL; } /* * Check which alternatives are present, and "downgrade" * when the chosen alternative is not present, warning * the user when that happens. Some files may not have * any alternatives, so don't warn in that case. */ alternatives = le64_to_cpu(ucode->alternatives); tmp = wanted_alternative; if (wanted_alternative > 63) wanted_alternative = 63; while (wanted_alternative && !(alternatives & BIT(wanted_alternative))) wanted_alternative--; if (wanted_alternative && wanted_alternative != tmp) IWL_WARN(priv, "uCode alternative %d not available, choosing %d\n", tmp, wanted_alternative); priv->ucode_ver = le32_to_cpu(ucode->ver); pieces->build = le32_to_cpu(ucode->build); data = ucode->data; len -= sizeof(*ucode); while (len >= sizeof(*tlv)) { u16 tlv_alt; len -= sizeof(*tlv); tlv = (void *)data; tlv_len = le32_to_cpu(tlv->length); tlv_type = le16_to_cpu(tlv->type); tlv_alt = le16_to_cpu(tlv->alternative); tlv_data = tlv->data; if (len < tlv_len) { IWL_ERR(priv, "invalid TLV len: %zd/%u\n", len, tlv_len); return -EINVAL; } len -= ALIGN(tlv_len, 4); data += sizeof(*tlv) + ALIGN(tlv_len, 4); /* * Alternative 0 is always valid. * * Skip alternative TLVs that are not selected. */ if (tlv_alt != 0 && tlv_alt != wanted_alternative) continue; switch (tlv_type) { case IWL_UCODE_TLV_INST: pieces->inst = tlv_data; pieces->inst_size = tlv_len; break; case IWL_UCODE_TLV_DATA: pieces->data = tlv_data; pieces->data_size = tlv_len; break; case IWL_UCODE_TLV_INIT: pieces->init = tlv_data; pieces->init_size = tlv_len; break; case IWL_UCODE_TLV_INIT_DATA: pieces->init_data = tlv_data; pieces->init_data_size = tlv_len; break; case IWL_UCODE_TLV_BOOT: IWL_ERR(priv, "Found unexpected BOOT ucode\n"); break; case IWL_UCODE_TLV_PROBE_MAX_LEN: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; capa->max_probe_length = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_PAN: if (tlv_len) goto invalid_tlv_len; capa->flags |= IWL_UCODE_TLV_FLAGS_PAN; break; case IWL_UCODE_TLV_FLAGS: /* must be at least one u32 */ if (tlv_len < sizeof(u32)) goto invalid_tlv_len; /* and a proper number of u32s */ if (tlv_len % sizeof(u32)) goto invalid_tlv_len; /* * This driver only reads the first u32 as * right now no more features are defined, * if that changes then either the driver * will not work with the new firmware, or * it'll not take advantage of new features. */ capa->flags = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_INIT_EVTLOG_PTR: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->init_evtlog_ptr = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_INIT_EVTLOG_SIZE: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->init_evtlog_size = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_INIT_ERRLOG_PTR: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->init_errlog_ptr = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_RUNT_EVTLOG_PTR: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->inst_evtlog_ptr = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->inst_evtlog_size = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_RUNT_ERRLOG_PTR: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; pieces->inst_errlog_ptr = le32_to_cpup((__le32 *)tlv_data); break; case IWL_UCODE_TLV_ENHANCE_SENS_TBL: if (tlv_len) goto invalid_tlv_len; priv->enhance_sensitivity_table = true; break; case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE: if (tlv_len != sizeof(u32)) goto invalid_tlv_len; capa->standard_phy_calibration_size = le32_to_cpup((__le32 *)tlv_data); break; default: IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type); break; } } if (len) { IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len); iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len); return -EINVAL; } return 0; invalid_tlv_len: IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len); iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len); return -EINVAL; } /** * iwl_ucode_callback - callback when firmware was loaded * * If loaded successfully, copies the firmware into buffers * for the card to fetch (via DMA). */ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) { struct iwl_priv *priv = context; struct iwl_ucode_header *ucode; int err; struct iwlagn_firmware_pieces pieces; const unsigned int api_max = priv->cfg->ucode_api_max; const unsigned int api_min = priv->cfg->ucode_api_min; u32 api_ver; char buildstr[25]; u32 build; struct iwlagn_ucode_capabilities ucode_capa = { .max_probe_length = 200, .standard_phy_calibration_size = IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE, }; memset(&pieces, 0, sizeof(pieces)); if (!ucode_raw) { if (priv->fw_index <= priv->cfg->ucode_api_max) IWL_ERR(priv, "request for firmware file '%s' failed.\n", priv->firmware_name); goto try_again; } IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n", priv->firmware_name, ucode_raw->size); /* Make sure that we got at least the API version number */ if (ucode_raw->size < 4) { IWL_ERR(priv, "File size way too small!\n"); goto try_again; } /* Data from ucode file: header followed by uCode images */ ucode = (struct iwl_ucode_header *)ucode_raw->data; if (ucode->ver) err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces); else err = iwlagn_load_firmware(priv, ucode_raw, &pieces, &ucode_capa); if (err) goto try_again; api_ver = IWL_UCODE_API(priv->ucode_ver); build = pieces.build; /* * api_ver should match the api version forming part of the * firmware filename ... but we don't check for that and only rely * on the API version read from firmware header from here on forward */ /* no api version check required for experimental uCode */ if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) { if (api_ver < api_min || api_ver > api_max) { IWL_ERR(priv, "Driver unable to support your firmware API. " "Driver supports v%u, firmware is v%u.\n", api_max, api_ver); goto try_again; } if (api_ver != api_max) IWL_ERR(priv, "Firmware has old API version. Expected v%u, " "got v%u. New firmware can be obtained " "from http://www.intellinuxwireless.org.\n", api_max, api_ver); } if (build) sprintf(buildstr, " build %u%s", build, (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) ? " (EXP)" : ""); else buildstr[0] = '\0'; IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n", IWL_UCODE_MAJOR(priv->ucode_ver), IWL_UCODE_MINOR(priv->ucode_ver), IWL_UCODE_API(priv->ucode_ver), IWL_UCODE_SERIAL(priv->ucode_ver), buildstr); snprintf(priv->hw->wiphy->fw_version, sizeof(priv->hw->wiphy->fw_version), "%u.%u.%u.%u%s", IWL_UCODE_MAJOR(priv->ucode_ver), IWL_UCODE_MINOR(priv->ucode_ver), IWL_UCODE_API(priv->ucode_ver), IWL_UCODE_SERIAL(priv->ucode_ver), buildstr); /* * For any of the failures below (before allocating pci memory) * we will try to load a version with a smaller API -- maybe the * user just got a corrupted version of the latest API. */ IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n", priv->ucode_ver); IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n", pieces.inst_size); IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n", pieces.data_size); IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n", pieces.init_size); IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n", pieces.init_data_size); /* Verify that uCode images will fit in card's SRAM */ if (pieces.inst_size > priv->hw_params.max_inst_size) { IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n", pieces.inst_size); goto try_again; } if (pieces.data_size > priv->hw_params.max_data_size) { IWL_ERR(priv, "uCode data len %Zd too large to fit in\n", pieces.data_size); goto try_again; } if (pieces.init_size > priv->hw_params.max_inst_size) { IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n", pieces.init_size); goto try_again; } if (pieces.init_data_size > priv->hw_params.max_data_size) { IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n", pieces.init_data_size); goto try_again; } /* Allocate ucode buffers for card's bus-master loading ... */ /* Runtime instructions and 2 copies of data: * 1) unmodified from disk * 2) backup cache for save/restore during power-downs */ if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_rt.code, pieces.inst, pieces.inst_size)) goto err_pci_alloc; if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_rt.data, pieces.data, pieces.data_size)) goto err_pci_alloc; /* Initialization instructions and data */ if (pieces.init_size && pieces.init_data_size) { if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init.code, pieces.init, pieces.init_size)) goto err_pci_alloc; if (iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init.data, pieces.init_data, pieces.init_data_size)) goto err_pci_alloc; } /* Now that we can no longer fail, copy information */ /* * The (size - 16) / 12 formula is based on the information recorded * for each event, which is of mode 1 (including timestamp) for all * new microcodes that include this information. */ priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr; if (pieces.init_evtlog_size) priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12; else priv->_agn.init_evtlog_size = priv->cfg->base_params->max_event_log_size; priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr; priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr; if (pieces.inst_evtlog_size) priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12; else priv->_agn.inst_evtlog_size = priv->cfg->base_params->max_event_log_size; priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr; priv->new_scan_threshold_behaviour = !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) && (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) { priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; } else priv->sta_key_max_num = STA_KEY_MAX_NUM; if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)) priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; else priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; /* * figure out the offset of chain noise reset and gain commands * base on the size of standard phy calibration commands table size */ if (ucode_capa.standard_phy_calibration_size > IWL_MAX_PHY_CALIBRATE_TBL_SIZE) ucode_capa.standard_phy_calibration_size = IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE; priv->_agn.phy_calib_chain_noise_reset_cmd = ucode_capa.standard_phy_calibration_size; priv->_agn.phy_calib_chain_noise_gain_cmd = ucode_capa.standard_phy_calibration_size + 1; /************************************************** * This is still part of probe() in a sense... * * 9. Setup and register with mac80211 and debugfs **************************************************/ err = iwl_mac_setup_register(priv, &ucode_capa); if (err) goto out_unbind; err = iwl_dbgfs_register(priv, DRV_NAME); if (err) IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err); err = sysfs_create_group(&priv->pci_dev->dev.kobj, &iwl_attribute_group); if (err) { IWL_ERR(priv, "failed to create sysfs device attributes\n"); goto out_unbind; } /* We have our copies now, allow OS release its copies */ release_firmware(ucode_raw); complete(&priv->_agn.firmware_loading_complete); return; try_again: /* try next, if any */ if (iwl_request_firmware(priv, false)) goto out_unbind; release_firmware(ucode_raw); return; err_pci_alloc: IWL_ERR(priv, "failed to allocate pci memory\n"); iwl_dealloc_ucode_pci(priv); out_unbind: complete(&priv->_agn.firmware_loading_complete); device_release_driver(&priv->pci_dev->dev); release_firmware(ucode_raw); } static const char *desc_lookup_text[] = { "OK", "FAIL", "BAD_PARAM", "BAD_CHECKSUM", "NMI_INTERRUPT_WDG", "SYSASSERT", "FATAL_ERROR", "BAD_COMMAND", "HW_ERROR_TUNE_LOCK", "HW_ERROR_TEMPERATURE", "ILLEGAL_CHAN_FREQ", "VCC_NOT_STABLE", "FH_ERROR", "NMI_INTERRUPT_HOST", "NMI_INTERRUPT_ACTION_PT", "NMI_INTERRUPT_UNKNOWN", "UCODE_VERSION_MISMATCH", "HW_ERROR_ABS_LOCK", "HW_ERROR_CAL_LOCK_FAIL", "NMI_INTERRUPT_INST_ACTION_PT", "NMI_INTERRUPT_DATA_ACTION_PT", "NMI_TRM_HW_ER", "NMI_INTERRUPT_TRM", "NMI_INTERRUPT_BREAK_POINT" "DEBUG_0", "DEBUG_1", "DEBUG_2", "DEBUG_3", }; static struct { char *name; u8 num; } advanced_lookup[] = { { "NMI_INTERRUPT_WDG", 0x34 }, { "SYSASSERT", 0x35 }, { "UCODE_VERSION_MISMATCH", 0x37 }, { "BAD_COMMAND", 0x38 }, { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, { "FATAL_ERROR", 0x3D }, { "NMI_TRM_HW_ERR", 0x46 }, { "NMI_INTERRUPT_TRM", 0x4C }, { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, { "NMI_INTERRUPT_HOST", 0x66 }, { "NMI_INTERRUPT_ACTION_PT", 0x7C }, { "NMI_INTERRUPT_UNKNOWN", 0x84 }, { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, { "ADVANCED_SYSASSERT", 0 }, }; static const char *desc_lookup(u32 num) { int i; int max = ARRAY_SIZE(desc_lookup_text); if (num < max) return desc_lookup_text[num]; max = ARRAY_SIZE(advanced_lookup) - 1; for (i = 0; i < max; i++) { if (advanced_lookup[i].num == num) break; } return advanced_lookup[i].name; } #define ERROR_START_OFFSET (1 * sizeof(u32)) #define ERROR_ELEM_SIZE (7 * sizeof(u32)) void iwl_dump_nic_error_log(struct iwl_priv *priv) { u32 base; struct iwl_error_event_table table; base = priv->device_pointers.error_event_table; if (priv->ucode_type == IWL_UCODE_INIT) { if (!base) base = priv->_agn.init_errlog_ptr; } else { if (!base) base = priv->_agn.inst_errlog_ptr; } if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Not valid error log pointer 0x%08X for %s uCode\n", base, (priv->ucode_type == IWL_UCODE_INIT) ? "Init" : "RT"); return; } iwl_read_targ_mem_words(priv, base, &table, sizeof(table)); if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { IWL_ERR(priv, "Start IWL Error Log Dump:\n"); IWL_ERR(priv, "Status: 0x%08lX, count: %d\n", priv->status, table.valid); } priv->isr_stats.err_code = table.error_id; trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low, table.data1, table.data2, table.line, table.blink1, table.blink2, table.ilink1, table.ilink2, table.bcon_time, table.gp1, table.gp2, table.gp3, table.ucode_ver, table.hw_ver, table.brd_ver); IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, desc_lookup(table.error_id)); IWL_ERR(priv, "0x%08X | uPc\n", table.pc); IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); IWL_ERR(priv, "0x%08X | data1\n", table.data1); IWL_ERR(priv, "0x%08X | data2\n", table.data2); IWL_ERR(priv, "0x%08X | line\n", table.line); IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); } #define EVENT_START_OFFSET (4 * sizeof(u32)) /** * iwl_print_event_log - Dump error event log to syslog * */ static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, u32 num_events, u32 mode, int pos, char **buf, size_t bufsz) { u32 i; u32 base; /* SRAM byte address of event log header */ u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ u32 ptr; /* SRAM byte address of log data */ u32 ev, time, data; /* event log data */ unsigned long reg_flags; if (num_events == 0) return pos; base = priv->device_pointers.log_event_table; if (priv->ucode_type == IWL_UCODE_INIT) { if (!base) base = priv->_agn.init_evtlog_ptr; } else { if (!base) base = priv->_agn.inst_evtlog_ptr; } if (mode == 0) event_size = 2 * sizeof(u32); else event_size = 3 * sizeof(u32); ptr = base + EVENT_START_OFFSET + (start_idx * event_size); /* Make sure device is powered up for SRAM reads */ spin_lock_irqsave(&priv->reg_lock, reg_flags); iwl_grab_nic_access(priv); /* Set starting address; reads will auto-increment */ iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr); rmb(); /* "time" is actually "data" for mode 0 (no timestamp). * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT); time = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (mode == 0) { /* data, ev */ if (bufsz) { pos += scnprintf(*buf + pos, bufsz - pos, "EVT_LOG:0x%08x:%04u\n", time, ev); } else { trace_iwlwifi_dev_ucode_event(priv, 0, time, ev); IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev); } } else { data = iwl_read32(priv, HBUS_TARG_MEM_RDAT); if (bufsz) { pos += scnprintf(*buf + pos, bufsz - pos, "EVT_LOGT:%010u:0x%08x:%04u\n", time, data, ev); } else { IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", time, data, ev); trace_iwlwifi_dev_ucode_event(priv, time, data, ev); } } } /* Allow device to power down */ iwl_release_nic_access(priv); spin_unlock_irqrestore(&priv->reg_lock, reg_flags); return pos; } /** * iwl_print_last_event_logs - Dump the newest # of event log to syslog */ static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, u32 num_wraps, u32 next_entry, u32 size, u32 mode, int pos, char **buf, size_t bufsz) { /* * display the newest DEFAULT_LOG_ENTRIES entries * i.e the entries just before the next ont that uCode would fill. */ if (num_wraps) { if (next_entry < size) { pos = iwl_print_event_log(priv, capacity - (size - next_entry), size - next_entry, mode, pos, buf, bufsz); pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else pos = iwl_print_event_log(priv, next_entry - size, size, mode, pos, buf, bufsz); } else { if (next_entry < size) { pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else { pos = iwl_print_event_log(priv, next_entry - size, size, mode, pos, buf, bufsz); } } return pos; } #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, char **buf, bool display) { u32 base; /* SRAM byte address of event log header */ u32 capacity; /* event log capacity in # entries */ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ u32 num_wraps; /* # times uCode wrapped to top of log */ u32 next_entry; /* index of next entry to be written by uCode */ u32 size; /* # entries that we'll print */ u32 logsize; int pos = 0; size_t bufsz = 0; base = priv->device_pointers.log_event_table; if (priv->ucode_type == IWL_UCODE_INIT) { logsize = priv->_agn.init_evtlog_size; if (!base) base = priv->_agn.init_evtlog_ptr; } else { logsize = priv->_agn.inst_evtlog_size; if (!base) base = priv->_agn.inst_evtlog_ptr; } if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Invalid event log pointer 0x%08X for %s uCode\n", base, (priv->ucode_type == IWL_UCODE_INIT) ? "Init" : "RT"); return -EINVAL; } /* event log header */ capacity = iwl_read_targ_mem(priv, base); mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); if (capacity > logsize) { IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n", capacity, logsize); capacity = logsize; } if (next_entry > logsize) { IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", next_entry, logsize); next_entry = logsize; } size = num_wraps ? capacity : next_entry; /* bail out if nothing in log */ if (size == 0) { IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n"); return pos; } /* enable/disable bt channel inhibition */ priv->bt_ch_announce = iwlagn_bt_ch_announce; #ifdef CONFIG_IWLWIFI_DEBUG if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log) size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; #else size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; #endif IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", size); #ifdef CONFIG_IWLWIFI_DEBUG if (display) { if (full_log) bufsz = capacity * 48; else bufsz = size * 48; *buf = kmalloc(bufsz, GFP_KERNEL); if (!*buf) return -ENOMEM; } if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) { /* * if uCode has wrapped back to top of log, * start at the oldest entry, * i.e the next one that uCode would fill. */ if (num_wraps) pos = iwl_print_event_log(priv, next_entry, capacity - next_entry, mode, pos, buf, bufsz); /* (then/else) start at top of log */ pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else pos = iwl_print_last_event_logs(priv, capacity, num_wraps, next_entry, size, mode, pos, buf, bufsz); #else pos = iwl_print_last_event_logs(priv, capacity, num_wraps, next_entry, size, mode, pos, buf, bufsz); #endif return pos; } static void iwl_rf_kill_ct_config(struct iwl_priv *priv) { struct iwl_ct_kill_config cmd; struct iwl_ct_kill_throttling_config adv_cmd; unsigned long flags; int ret = 0; spin_lock_irqsave(&priv->lock, flags); iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); spin_unlock_irqrestore(&priv->lock, flags); priv->thermal_throttle.ct_kill_toggle = false; if (priv->cfg->base_params->support_ct_kill_exit) { adv_cmd.critical_temperature_enter = cpu_to_le32(priv->hw_params.ct_kill_threshold); adv_cmd.critical_temperature_exit = cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, sizeof(adv_cmd), &adv_cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, " "critical temperature enter is %d," "exit is %d\n", priv->hw_params.ct_kill_threshold, priv->hw_params.ct_kill_exit_threshold); } else { cmd.critical_temperature_R = cpu_to_le32(priv->hw_params.ct_kill_threshold); ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, " "critical temperature is %d\n", priv->hw_params.ct_kill_threshold); } } static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) { struct iwl_calib_cfg_cmd calib_cfg_cmd; struct iwl_host_cmd cmd = { .id = CALIBRATION_CFG_CMD, .len = { sizeof(struct iwl_calib_cfg_cmd), }, .data = { &calib_cfg_cmd, }, }; memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL; calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); return iwl_send_cmd(priv, &cmd); } /** * iwl_alive_start - called after REPLY_ALIVE notification received * from protocol/runtime uCode (initialization uCode's * Alive gets handled by iwl_init_alive_start()). */ int iwl_alive_start(struct iwl_priv *priv) { int ret = 0; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; iwl_reset_ict(priv); IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); /* After the ALIVE response, we can send host commands to the uCode */ set_bit(STATUS_ALIVE, &priv->status); /* Enable watchdog to monitor the driver tx queues */ iwl_setup_watchdog(priv); if (iwl_is_rfkill(priv)) return -ERFKILL; /* download priority table before any calibration request */ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist) { /* Configure Bluetooth device coexistence support */ priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; priv->cfg->ops->hcmd->send_bt_config(priv); priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; iwlagn_send_prio_tbl(priv); /* FIXME: w/a to force change uCode BT state machine */ ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); if (ret) return ret; ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); if (ret) return ret; } if (priv->hw_params.calib_rt_cfg) iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg); ieee80211_wake_queues(priv->hw); priv->active_rate = IWL_RATES_MASK; /* Configure Tx antenna selection based on H/W config */ if (priv->cfg->ops->hcmd->set_tx_ant) priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant); if (iwl_is_associated_ctx(ctx)) { struct iwl_rxon_cmd *active_rxon = (struct iwl_rxon_cmd *)&ctx->active; /* apply any changes in staging */ ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; } else { struct iwl_rxon_context *tmp; /* Initialize our rx_config data */ for_each_context(priv, tmp) iwl_connection_init_rx_config(priv, tmp); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); } if (!priv->cfg->bt_params || (priv->cfg->bt_params && !priv->cfg->bt_params->advanced_bt_coexist)) { /* * default is 2-wire BT coexexistence support */ priv->cfg->ops->hcmd->send_bt_config(priv); } iwl_reset_run_time_calib(priv); set_bit(STATUS_READY, &priv->status); /* Configure the adapter for unassociated operation */ ret = iwlagn_commit_rxon(priv, ctx); if (ret) return ret; /* At this point, the NIC is initialized and operational */ iwl_rf_kill_ct_config(priv); IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); return iwl_power_update_mode(priv, true); } static void iwl_cancel_deferred_work(struct iwl_priv *priv); static void __iwl_down(struct iwl_priv *priv) { int exit_pending; IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); iwl_scan_cancel_timeout(priv, 200); exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set * to prevent rearm timer */ del_timer_sync(&priv->watchdog); iwl_clear_ucode_stations(priv, NULL); iwl_dealloc_bcast_stations(priv); iwl_clear_driver_stations(priv); /* reset BT coex data */ priv->bt_status = 0; if (priv->cfg->bt_params) priv->bt_traffic_load = priv->cfg->bt_params->bt_init_traffic_load; else priv->bt_traffic_load = 0; priv->bt_full_concurrent = false; priv->bt_ci_compliance = 0; /* Wipe out the EXIT_PENDING status bit if we are not actually * exiting the module */ if (!exit_pending) clear_bit(STATUS_EXIT_PENDING, &priv->status); if (priv->mac80211_registered) ieee80211_stop_queues(priv->hw); /* Clear out all status bits but a few that are stable across reset */ priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << STATUS_RF_KILL_HW | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << STATUS_GEO_CONFIGURED | test_bit(STATUS_FW_ERROR, &priv->status) << STATUS_FW_ERROR | test_bit(STATUS_EXIT_PENDING, &priv->status) << STATUS_EXIT_PENDING; iwlagn_stop_device(priv); dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = NULL; } static void iwl_down(struct iwl_priv *priv) { mutex_lock(&priv->mutex); __iwl_down(priv); mutex_unlock(&priv->mutex); iwl_cancel_deferred_work(priv); } #define HW_READY_TIMEOUT (50) /* Note: returns poll_bit return value, which is >= 0 if success */ static int iwl_set_hw_ready(struct iwl_priv *priv) { int ret; iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); /* See if we got it */ ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, HW_READY_TIMEOUT); IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : ""); return ret; } /* Note: returns standard 0/-ERROR code */ int iwl_prepare_card_hw(struct iwl_priv *priv) { int ret; IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n"); ret = iwl_set_hw_ready(priv); if (ret >= 0) return 0; /* If HW is not ready, prepare the conditions to check again */ iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_PREPARE); ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000); if (ret < 0) return ret; /* HW should be ready by now, check again. */ ret = iwl_set_hw_ready(priv); if (ret >= 0) return 0; return ret; } #define MAX_HW_RESTARTS 5 static int __iwl_up(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; int ret; lockdep_assert_held(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); return -EIO; } for_each_context(priv, ctx) { ret = iwlagn_alloc_bcast_station(priv, ctx); if (ret) { iwl_dealloc_bcast_stations(priv); return ret; } } ret = iwlagn_run_init_ucode(priv); if (ret) { IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret); goto error; } ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_rt, IWL_UCODE_REGULAR); if (ret) { IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret); goto error; } ret = iwl_alive_start(priv); if (ret) goto error; return 0; error: set_bit(STATUS_EXIT_PENDING, &priv->status); __iwl_down(priv); clear_bit(STATUS_EXIT_PENDING, &priv->status); IWL_ERR(priv, "Unable to initialize device.\n"); return ret; } /***************************************************************************** * * Workqueue callbacks * *****************************************************************************/ static void iwl_bg_run_time_calib_work(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, run_time_calib_work); mutex_lock(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status) || test_bit(STATUS_SCANNING, &priv->status)) { mutex_unlock(&priv->mutex); return; } if (priv->start_calib) { iwl_chain_noise_calibration(priv); iwl_sensitivity_calibration(priv); } mutex_unlock(&priv->mutex); } static void iwlagn_prepare_restart(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; bool bt_full_concurrent; u8 bt_ci_compliance; u8 bt_load; u8 bt_status; lockdep_assert_held(&priv->mutex); for_each_context(priv, ctx) ctx->vif = NULL; priv->is_open = 0; /* * __iwl_down() will clear the BT status variables, * which is correct, but when we restart we really * want to keep them so restore them afterwards. * * The restart process will later pick them up and * re-configure the hw when we reconfigure the BT * command. */ bt_full_concurrent = priv->bt_full_concurrent; bt_ci_compliance = priv->bt_ci_compliance; bt_load = priv->bt_traffic_load; bt_status = priv->bt_status; __iwl_down(priv); priv->bt_full_concurrent = bt_full_concurrent; priv->bt_ci_compliance = bt_ci_compliance; priv->bt_traffic_load = bt_load; priv->bt_status = bt_status; } static void iwl_bg_restart(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { mutex_lock(&priv->mutex); iwlagn_prepare_restart(priv); mutex_unlock(&priv->mutex); iwl_cancel_deferred_work(priv); ieee80211_restart_hw(priv->hw); } else { WARN_ON(1); } } static void iwl_bg_rx_replenish(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, rx_replenish); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); iwlagn_rx_replenish(priv); mutex_unlock(&priv->mutex); } static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, unsigned int wait) { struct iwl_priv *priv = hw->priv; int ret; /* Not supported if we don't have PAN */ if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) { ret = -EOPNOTSUPP; goto free; } /* Not supported on pre-P2P firmware */ if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT))) { ret = -EOPNOTSUPP; goto free; } mutex_lock(&priv->mutex); if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) { /* * If the PAN context is free, use the normal * way of doing remain-on-channel offload + TX. */ ret = 1; goto out; } /* TODO: queue up if scanning? */ if (test_bit(STATUS_SCANNING, &priv->status) || priv->_agn.offchan_tx_skb) { ret = -EBUSY; goto out; } /* * max_scan_ie_len doesn't include the blank SSID or the header, * so need to add that again here. */ if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) { ret = -ENOBUFS; goto out; } priv->_agn.offchan_tx_skb = skb; priv->_agn.offchan_tx_timeout = wait; priv->_agn.offchan_tx_chan = chan; ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif, IWL_SCAN_OFFCH_TX, chan->band); if (ret) priv->_agn.offchan_tx_skb = NULL; out: mutex_unlock(&priv->mutex); free: if (ret < 0) kfree_skb(skb); return ret; } static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; int ret; mutex_lock(&priv->mutex); if (!priv->_agn.offchan_tx_skb) { ret = -EINVAL; goto unlock; } priv->_agn.offchan_tx_skb = NULL; ret = iwl_scan_cancel_timeout(priv, 200); if (ret) ret = -EIO; unlock: mutex_unlock(&priv->mutex); return ret; } /***************************************************************************** * * mac80211 entry point functions * *****************************************************************************/ static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = { { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, { .max = 1, .types = BIT(NL80211_IFTYPE_AP), }, }; static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = { { .max = 2, .types = BIT(NL80211_IFTYPE_STATION), }, }; static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = { { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_GO) | BIT(NL80211_IFTYPE_AP), }, }; static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = { { .max = 2, .types = BIT(NL80211_IFTYPE_STATION), }, { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT), }, }; static const struct ieee80211_iface_combination iwlagn_iface_combinations_dualmode[] = { { .num_different_channels = 1, .max_interfaces = 2, .beacon_int_infra_match = true, .limits = iwlagn_sta_ap_limits, .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits), }, { .num_different_channels = 1, .max_interfaces = 2, .limits = iwlagn_2sta_limits, .n_limits = ARRAY_SIZE(iwlagn_2sta_limits), }, }; static const struct ieee80211_iface_combination iwlagn_iface_combinations_p2p[] = { { .num_different_channels = 1, .max_interfaces = 2, .beacon_int_infra_match = true, .limits = iwlagn_p2p_sta_go_limits, .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits), }, { .num_different_channels = 1, .max_interfaces = 2, .limits = iwlagn_p2p_2sta_limits, .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits), }, }; /* * Not a mac80211 entry point function, but it fits in with all the * other mac80211 functions grouped here. */ static int iwl_mac_setup_register(struct iwl_priv *priv, struct iwlagn_ucode_capabilities *capa) { int ret; struct ieee80211_hw *hw = priv->hw; struct iwl_rxon_context *ctx; hw->rate_control_algorithm = "iwl-agn-rs"; /* Tell mac80211 our characteristics */ hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_AMPDU_AGGREGATION | IEEE80211_HW_NEED_DTIM_PERIOD | IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS; hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; hw->flags |= IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS; if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS | IEEE80211_HW_SUPPORTS_STATIC_SMPS; if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP) hw->flags |= IEEE80211_HW_MFP_CAPABLE; hw->sta_data_size = sizeof(struct iwl_station_priv); hw->vif_data_size = sizeof(struct iwl_vif_priv); for_each_context(priv, ctx) { hw->wiphy->interface_modes |= ctx->interface_modes; hw->wiphy->interface_modes |= ctx->exclusive_interface_modes; } BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) { hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p; hw->wiphy->n_iface_combinations = ARRAY_SIZE(iwlagn_iface_combinations_p2p); } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode; hw->wiphy->n_iface_combinations = ARRAY_SIZE(iwlagn_iface_combinations_dualmode); } hw->wiphy->max_remain_on_channel_duration = 1000; hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | WIPHY_FLAG_DISABLE_BEACON_HINTS | WIPHY_FLAG_IBSS_RSN; /* * For now, disable PS by default because it affects * RX performance significantly. */ hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; /* we create the 802.11 header and a zero-length SSID element */ hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2; /* Default value; 4 EDCA QOS priorities */ hw->queues = 4; hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; if (priv->bands[IEEE80211_BAND_2GHZ].n_channels) priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ]; if (priv->bands[IEEE80211_BAND_5GHZ].n_channels) priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ]; iwl_leds_init(priv); ret = ieee80211_register_hw(priv->hw); if (ret) { IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); return ret; } priv->mac80211_registered = 1; return 0; } static int iwlagn_mac_start(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; int ret; IWL_DEBUG_MAC80211(priv, "enter\n"); /* we should be verifying the device is ready to be opened */ mutex_lock(&priv->mutex); ret = __iwl_up(priv); mutex_unlock(&priv->mutex); if (ret) return ret; IWL_DEBUG_INFO(priv, "Start UP work done.\n"); /* Now we should be done, and the READY bit should be set. */ if (WARN_ON(!test_bit(STATUS_READY, &priv->status))) ret = -EIO; iwlagn_led_enable(priv); priv->is_open = 1; IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } static void iwlagn_mac_stop(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; IWL_DEBUG_MAC80211(priv, "enter\n"); if (!priv->is_open) return; priv->is_open = 0; iwl_down(priv); flush_workqueue(priv->workqueue); /* User space software may expect getting rfkill changes * even if interface is down */ iwl_write32(priv, CSR_INT, 0xFFFFFFFF); iwl_enable_rfkill_int(priv); IWL_DEBUG_MAC80211(priv, "leave\n"); } static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) { struct iwl_priv *priv = hw->priv; IWL_DEBUG_MACDUMP(priv, "enter\n"); IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); if (iwlagn_tx_skb(priv, skb)) dev_kfree_skb_any(skb); IWL_DEBUG_MACDUMP(priv, "leave\n"); } static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_key_conf *keyconf, struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) { struct iwl_priv *priv = hw->priv; struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; IWL_DEBUG_MAC80211(priv, "enter\n"); iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta, iv32, phase1key); IWL_DEBUG_MAC80211(priv, "leave\n"); } static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct iwl_priv *priv = hw->priv; struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; struct iwl_rxon_context *ctx = vif_priv->ctx; int ret; u8 sta_id; bool is_default_wep_key = false; IWL_DEBUG_MAC80211(priv, "enter\n"); if (iwlagn_mod_params.sw_crypto) { IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); return -EOPNOTSUPP; } /* * To support IBSS RSN, don't program group keys in IBSS, the * hardware will then not attempt to decrypt the frames. */ if (vif->type == NL80211_IFTYPE_ADHOC && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) return -EOPNOTSUPP; sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta); if (sta_id == IWL_INVALID_STATION) return -EINVAL; mutex_lock(&priv->mutex); iwl_scan_cancel_timeout(priv, 100); /* * If we are getting WEP group key and we didn't receive any key mapping * so far, we are in legacy wep mode (group key only), otherwise we are * in 1X mode. * In legacy wep mode, we use another host command to the uCode. */ if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) { if (cmd == SET_KEY) is_default_wep_key = !ctx->key_mapping_keys; else is_default_wep_key = (key->hw_key_idx == HW_KEY_DEFAULT); } switch (cmd) { case SET_KEY: if (is_default_wep_key) ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key); else ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta_id); IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); break; case DISABLE_KEY: if (is_default_wep_key) ret = iwl_remove_default_wep_key(priv, ctx, key); else ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id); IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); break; default: ret = -EINVAL; } mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); return ret; } static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size) { struct iwl_priv *priv = hw->priv; int ret = -EINVAL; struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", sta->addr, tid); if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)) return -EACCES; mutex_lock(&priv->mutex); switch (action) { case IEEE80211_AMPDU_RX_START: IWL_DEBUG_HT(priv, "start Rx\n"); ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn); break; case IEEE80211_AMPDU_RX_STOP: IWL_DEBUG_HT(priv, "stop Rx\n"); ret = iwl_sta_rx_agg_stop(priv, sta, tid); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) ret = 0; break; case IEEE80211_AMPDU_TX_START: IWL_DEBUG_HT(priv, "start Tx\n"); ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn); if (ret == 0) { priv->_agn.agg_tids_count++; IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n", priv->_agn.agg_tids_count); } break; case IEEE80211_AMPDU_TX_STOP: IWL_DEBUG_HT(priv, "stop Tx\n"); ret = iwlagn_tx_agg_stop(priv, vif, sta, tid); if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) { priv->_agn.agg_tids_count--; IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n", priv->_agn.agg_tids_count); } if (test_bit(STATUS_EXIT_PENDING, &priv->status)) ret = 0; if (priv->cfg->ht_params && priv->cfg->ht_params->use_rts_for_aggregation) { /* * switch off RTS/CTS if it was previously enabled */ sta_priv->lq_sta.lq.general_params.flags &= ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), &sta_priv->lq_sta.lq, CMD_ASYNC, false); } break; case IEEE80211_AMPDU_TX_OPERATIONAL: buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); iwlagn_txq_agg_queue_setup(priv, sta, tid, buf_size); /* * If the limit is 0, then it wasn't initialised yet, * use the default. We can do that since we take the * minimum below, and we don't want to go above our * default due to hardware restrictions. */ if (sta_priv->max_agg_bufsize == 0) sta_priv->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; /* * Even though in theory the peer could have different * aggregation reorder buffer sizes for different sessions, * our ucode doesn't allow for that and has a global limit * for each station. Therefore, use the minimum of all the * aggregation sessions and our default value. */ sta_priv->max_agg_bufsize = min(sta_priv->max_agg_bufsize, buf_size); if (priv->cfg->ht_params && priv->cfg->ht_params->use_rts_for_aggregation) { /* * switch to RTS/CTS if it is the prefer protection * method for HT traffic */ sta_priv->lq_sta.lq.general_params.flags |= LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; } sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = sta_priv->max_agg_bufsize; iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), &sta_priv->lq_sta.lq, CMD_ASYNC, false); IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", sta->addr, tid); ret = 0; break; } mutex_unlock(&priv->mutex); return ret; } static int iwlagn_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct iwl_priv *priv = hw->priv; struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; bool is_ap = vif->type == NL80211_IFTYPE_STATION; int ret; u8 sta_id; IWL_DEBUG_INFO(priv, "received request to add station %pM\n", sta->addr); mutex_lock(&priv->mutex); IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n", sta->addr); sta_priv->common.sta_id = IWL_INVALID_STATION; atomic_set(&sta_priv->pending_frames, 0); if (vif->type == NL80211_IFTYPE_AP) sta_priv->client = true; ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr, is_ap, sta, &sta_id); if (ret) { IWL_ERR(priv, "Unable to add station %pM (%d)\n", sta->addr, ret); /* Should we return success if return code is EEXIST ? */ mutex_unlock(&priv->mutex); return ret; } sta_priv->common.sta_id = sta_id; /* Initialize rate scaling */ IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n", sta->addr); iwl_rs_rate_init(priv, sta, sta_id); mutex_unlock(&priv->mutex); return 0; } static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw, struct ieee80211_channel_switch *ch_switch) { struct iwl_priv *priv = hw->priv; const struct iwl_channel_info *ch_info; struct ieee80211_conf *conf = &hw->conf; struct ieee80211_channel *channel = ch_switch->channel; struct iwl_ht_config *ht_conf = &priv->current_ht_config; /* * MULTI-FIXME * When we add support for multiple interfaces, we need to * revisit this. The channel switch command in the device * only affects the BSS context, but what does that really * mean? And what if we get a CSA on the second interface? * This needs a lot of work. */ struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; u16 ch; IWL_DEBUG_MAC80211(priv, "enter\n"); mutex_lock(&priv->mutex); if (iwl_is_rfkill(priv)) goto out; if (test_bit(STATUS_EXIT_PENDING, &priv->status) || test_bit(STATUS_SCANNING, &priv->status) || test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) goto out; if (!iwl_is_associated_ctx(ctx)) goto out; if (!priv->cfg->ops->lib->set_channel_switch) goto out; ch = channel->hw_value; if (le16_to_cpu(ctx->active.channel) == ch) goto out; ch_info = iwl_get_channel_info(priv, channel->band, ch); if (!is_channel_valid(ch_info)) { IWL_DEBUG_MAC80211(priv, "invalid channel\n"); goto out; } spin_lock_irq(&priv->lock); priv->current_ht_config.smps = conf->smps_mode; /* Configure HT40 channels */ ctx->ht.enabled = conf_is_ht(conf); if (ctx->ht.enabled) { if (conf_is_ht40_minus(conf)) { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; ctx->ht.is_40mhz = true; } else if (conf_is_ht40_plus(conf)) { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; ctx->ht.is_40mhz = true; } else { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; ctx->ht.is_40mhz = false; } } else ctx->ht.is_40mhz = false; if ((le16_to_cpu(ctx->staging.channel) != ch)) ctx->staging.flags = 0; iwl_set_rxon_channel(priv, channel, ctx); iwl_set_rxon_ht(priv, ht_conf); iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif); spin_unlock_irq(&priv->lock); iwl_set_rate(priv); /* * at this point, staging_rxon has the * configuration for channel switch */ set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status); priv->switch_channel = cpu_to_le16(ch); if (priv->cfg->ops->lib->set_channel_switch(priv, ch_switch)) { clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status); priv->switch_channel = 0; ieee80211_chswitch_done(ctx->vif, false); } out: mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } static void iwlagn_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct iwl_priv *priv = hw->priv; __le32 filter_or = 0, filter_nand = 0; struct iwl_rxon_context *ctx; #define CHK(test, flag) do { \ if (*total_flags & (test)) \ filter_or |= (flag); \ else \ filter_nand |= (flag); \ } while (0) IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n", changed_flags, *total_flags); CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK); /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */ CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK); CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); #undef CHK mutex_lock(&priv->mutex); for_each_context(priv, ctx) { ctx->staging.filter_flags &= ~filter_nand; ctx->staging.filter_flags |= filter_or; /* * Not committing directly because hardware can perform a scan, * but we'll eventually commit the filter flags change anyway. */ } mutex_unlock(&priv->mutex); /* * Receiving all multicast frames is always enabled by the * default flags setup in iwl_connection_init_rx_config() * since we currently do not support programming multicast * filters into the device. */ *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; } static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop) { struct iwl_priv *priv = hw->priv; mutex_lock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "enter\n"); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n"); goto done; } if (iwl_is_rfkill(priv)) { IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n"); goto done; } /* * mac80211 will not push any more frames for transmit * until the flush is completed */ if (drop) { IWL_DEBUG_MAC80211(priv, "send flush command\n"); if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { IWL_ERR(priv, "flush request fail\n"); goto done; } } IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n"); iwlagn_wait_tx_queue_empty(priv); done: mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } static void iwlagn_disable_roc(struct iwl_priv *priv) { struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN]; struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel); lockdep_assert_held(&priv->mutex); if (!ctx->is_active) return; ctx->staging.dev_type = RXON_DEV_TYPE_2STA; ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; iwl_set_rxon_channel(priv, chan, ctx); iwl_set_flags_for_band(priv, ctx, chan->band, NULL); priv->_agn.hw_roc_channel = NULL; iwlagn_commit_rxon(priv, ctx); ctx->is_active = false; } static void iwlagn_bg_roc_done(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, _agn.hw_roc_work.work); mutex_lock(&priv->mutex); ieee80211_remain_on_channel_expired(priv->hw); iwlagn_disable_roc(priv); mutex_unlock(&priv->mutex); } static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_channel *channel, enum nl80211_channel_type channel_type, int duration) { struct iwl_priv *priv = hw->priv; int err = 0; if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) return -EOPNOTSUPP; if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT))) return -EOPNOTSUPP; mutex_lock(&priv->mutex); if (priv->contexts[IWL_RXON_CTX_PAN].is_active || test_bit(STATUS_SCAN_HW, &priv->status)) { err = -EBUSY; goto out; } priv->contexts[IWL_RXON_CTX_PAN].is_active = true; priv->_agn.hw_roc_channel = channel; priv->_agn.hw_roc_chantype = channel_type; priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024); iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]); queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work, msecs_to_jiffies(duration + 20)); msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */ ieee80211_ready_on_channel(priv->hw); out: mutex_unlock(&priv->mutex); return err; } static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) return -EOPNOTSUPP; cancel_delayed_work_sync(&priv->_agn.hw_roc_work); mutex_lock(&priv->mutex); iwlagn_disable_roc(priv); mutex_unlock(&priv->mutex); return 0; } /***************************************************************************** * * driver setup and teardown * *****************************************************************************/ static void iwl_setup_deferred_work(struct iwl_priv *priv) { priv->workqueue = create_singlethread_workqueue(DRV_NAME); init_waitqueue_head(&priv->wait_command_queue); INIT_WORK(&priv->restart, iwl_bg_restart); INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish); INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done); iwl_setup_scan_deferred_work(priv); if (priv->cfg->ops->lib->setup_deferred_work) priv->cfg->ops->lib->setup_deferred_work(priv); init_timer(&priv->statistics_periodic); priv->statistics_periodic.data = (unsigned long)priv; priv->statistics_periodic.function = iwl_bg_statistics_periodic; init_timer(&priv->ucode_trace); priv->ucode_trace.data = (unsigned long)priv; priv->ucode_trace.function = iwl_bg_ucode_trace; init_timer(&priv->watchdog); priv->watchdog.data = (unsigned long)priv; priv->watchdog.function = iwl_bg_watchdog; tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) iwl_irq_tasklet, (unsigned long)priv); } static void iwl_cancel_deferred_work(struct iwl_priv *priv) { if (priv->cfg->ops->lib->cancel_deferred_work) priv->cfg->ops->lib->cancel_deferred_work(priv); cancel_work_sync(&priv->run_time_calib_work); cancel_work_sync(&priv->beacon_update); iwl_cancel_scan_deferred_work(priv); cancel_work_sync(&priv->bt_full_concurrency); cancel_work_sync(&priv->bt_runtime_config); del_timer_sync(&priv->statistics_periodic); del_timer_sync(&priv->ucode_trace); } static void iwl_init_hw_rates(struct iwl_priv *priv, struct ieee80211_rate *rates) { int i; for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) { rates[i].bitrate = iwl_rates[i].ieee * 5; rates[i].hw_value = i; /* Rate scaling will work on indexes */ rates[i].hw_value_short = i; rates[i].flags = 0; if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) { /* * If CCK != 1M then set short preamble rate flag. */ rates[i].flags |= (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; } } } static int iwl_init_drv(struct iwl_priv *priv) { int ret; spin_lock_init(&priv->sta_lock); spin_lock_init(&priv->hcmd_lock); mutex_init(&priv->mutex); priv->ieee_channels = NULL; priv->ieee_rates = NULL; priv->band = IEEE80211_BAND_2GHZ; priv->iw_mode = NL80211_IFTYPE_STATION; priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; priv->_agn.agg_tids_count = 0; /* initialize force reset */ priv->force_reset[IWL_RF_RESET].reset_duration = IWL_DELAY_NEXT_FORCE_RF_RESET; priv->force_reset[IWL_FW_RESET].reset_duration = IWL_DELAY_NEXT_FORCE_FW_RELOAD; priv->rx_statistics_jiffies = jiffies; /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); iwl_init_scan_params(priv); /* init bt coex */ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist) { priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; priv->bt_duration = BT_DURATION_LIMIT_DEF; priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; } ret = iwl_init_channel_map(priv); if (ret) { IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); goto err; } ret = iwlcore_init_geos(priv); if (ret) { IWL_ERR(priv, "initializing geos failed: %d\n", ret); goto err_free_channel_map; } iwl_init_hw_rates(priv, priv->ieee_rates); return 0; err_free_channel_map: iwl_free_channel_map(priv); err: return ret; } static void iwl_uninit_drv(struct iwl_priv *priv) { iwl_calib_free_results(priv); iwlcore_free_geos(priv); iwl_free_channel_map(priv); kfree(priv->scan_cmd); kfree(priv->beacon_cmd); } struct ieee80211_ops iwlagn_hw_ops = { .tx = iwlagn_mac_tx, .start = iwlagn_mac_start, .stop = iwlagn_mac_stop, .add_interface = iwl_mac_add_interface, .remove_interface = iwl_mac_remove_interface, .change_interface = iwl_mac_change_interface, .config = iwlagn_mac_config, .configure_filter = iwlagn_configure_filter, .set_key = iwlagn_mac_set_key, .update_tkip_key = iwlagn_mac_update_tkip_key, .conf_tx = iwl_mac_conf_tx, .bss_info_changed = iwlagn_bss_info_changed, .ampdu_action = iwlagn_mac_ampdu_action, .hw_scan = iwl_mac_hw_scan, .sta_notify = iwlagn_mac_sta_notify, .sta_add = iwlagn_mac_sta_add, .sta_remove = iwl_mac_sta_remove, .channel_switch = iwlagn_mac_channel_switch, .flush = iwlagn_mac_flush, .tx_last_beacon = iwl_mac_tx_last_beacon, .remain_on_channel = iwl_mac_remain_on_channel, .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel, .offchannel_tx = iwl_mac_offchannel_tx, .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait, CFG80211_TESTMODE_CMD(iwl_testmode_cmd) CFG80211_TESTMODE_DUMP(iwl_testmode_dump) }; static u32 iwl_hw_detect(struct iwl_priv *priv) { u8 rev_id; pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id); return iwl_read32(priv, CSR_HW_REV); } static int iwl_set_hw_params(struct iwl_priv *priv) { priv->hw_params.max_rxq_size = RX_QUEUE_SIZE; priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; if (iwlagn_mod_params.amsdu_size_8K) priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K); else priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K); priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL; if (iwlagn_mod_params.disable_11n) priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE; /* Device-specific setup */ return priv->cfg->ops->lib->set_hw_params(priv); } static const u8 iwlagn_bss_ac_to_fifo[] = { IWL_TX_FIFO_VO, IWL_TX_FIFO_VI, IWL_TX_FIFO_BE, IWL_TX_FIFO_BK, }; static const u8 iwlagn_bss_ac_to_queue[] = { 0, 1, 2, 3, }; static const u8 iwlagn_pan_ac_to_fifo[] = { IWL_TX_FIFO_VO_IPAN, IWL_TX_FIFO_VI_IPAN, IWL_TX_FIFO_BE_IPAN, IWL_TX_FIFO_BK_IPAN, }; static const u8 iwlagn_pan_ac_to_queue[] = { 7, 6, 5, 4, }; /* This function both allocates and initializes hw and priv. */ static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg) { struct iwl_priv *priv; /* mac80211 allocates memory for this device instance, including * space for this driver's private structure */ struct ieee80211_hw *hw; hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops); if (hw == NULL) { pr_err("%s: Can not allocate network device\n", cfg->name); goto out; } priv = hw->priv; priv->hw = hw; out: return hw; } static void iwl_init_context(struct iwl_priv *priv) { int i; /* * The default context is always valid, * more may be discovered when firmware * is loaded. */ priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); for (i = 0; i < NUM_IWL_RXON_CTX; i++) priv->contexts[i].ctxid = i; priv->contexts[IWL_RXON_CTX_BSS].always_active = true; priv->contexts[IWL_RXON_CTX_BSS].is_active = true; priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo; priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue; priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = BIT(NL80211_IFTYPE_ADHOC); priv->contexts[IWL_RXON_CTX_BSS].interface_modes = BIT(NL80211_IFTYPE_STATION); priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING; priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC; priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo; priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue; priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; priv->contexts[IWL_RXON_CTX_PAN].interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); #ifdef CONFIG_IWL_P2P priv->contexts[IWL_RXON_CTX_PAN].interface_modes |= BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO); #endif priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); } int iwl_probe(struct pci_dev *pdev, struct iwl_cfg *cfg) { int err = 0; struct iwl_priv *priv; struct ieee80211_hw *hw; u16 pci_cmd, num_mac; u32 hw_rev; /************************ * 1. Allocating HW data ************************/ hw = iwl_alloc_all(cfg); if (!hw) { err = -ENOMEM; goto out; } priv = hw->priv; /* At this point both hw and priv are allocated. */ SET_IEEE80211_DEV(hw, &pdev->dev); IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); priv->cfg = cfg; priv->pci_dev = pdev; priv->inta_mask = CSR_INI_SET_MASK; /* is antenna coupling more than 35dB ? */ priv->bt_ant_couple_ok = (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? true : false; /* enable/disable bt channel inhibition */ priv->bt_ch_announce = iwlagn_bt_ch_announce; IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", (priv->bt_ch_announce) ? "On" : "Off"); if (iwl_alloc_traffic_mem(priv)) IWL_ERR(priv, "Not enough memory to generate traffic log\n"); /************************** * 2. Initializing PCI bus **************************/ pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); if (pci_enable_device(pdev)) { err = -ENODEV; goto out_ieee80211_free_hw; } pci_set_master(pdev); err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); if (!err) err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); if (err) { err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (!err) err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); /* both attempts failed: */ if (err) { IWL_WARN(priv, "No suitable DMA available.\n"); goto out_pci_disable_device; } } err = pci_request_regions(pdev, DRV_NAME); if (err) goto out_pci_disable_device; pci_set_drvdata(pdev, priv); /*********************** * 3. Read REV register ***********************/ priv->hw_base = pci_iomap(pdev, 0, 0); if (!priv->hw_base) { err = -ENODEV; goto out_pci_release_regions; } IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n", (unsigned long long) pci_resource_len(pdev, 0)); IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base); /* these spin locks will be used in apm_ops.init and EEPROM access * we should init now */ spin_lock_init(&priv->reg_lock); spin_lock_init(&priv->lock); /* * stop and reset the on-board processor just in case it is in a * strange state ... like being left stranded by a primary kernel * and this is now the kdump kernel trying to start up */ iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); hw_rev = iwl_hw_detect(priv); IWL_INFO(priv, "Detected %s, REV=0x%X\n", priv->cfg->name, hw_rev); /* We disable the RETRY_TIMEOUT register (0x41) to keep * PCI Tx retries from interfering with C3 CPU state */ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); if (iwl_prepare_card_hw(priv)) { IWL_WARN(priv, "Failed, HW not ready\n"); goto out_iounmap; } /***************** * 4. Read EEPROM *****************/ /* Read the EEPROM */ err = iwl_eeprom_init(priv, hw_rev); if (err) { IWL_ERR(priv, "Unable to init EEPROM\n"); goto out_iounmap; } err = iwl_eeprom_check_version(priv); if (err) goto out_free_eeprom; err = iwl_eeprom_check_sku(priv); if (err) goto out_free_eeprom; /* extract MAC Address */ iwl_eeprom_get_mac(priv, priv->addresses[0].addr); IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); priv->hw->wiphy->addresses = priv->addresses; priv->hw->wiphy->n_addresses = 1; num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS); if (num_mac > 1) { memcpy(priv->addresses[1].addr, priv->addresses[0].addr, ETH_ALEN); priv->addresses[1].addr[5]++; priv->hw->wiphy->n_addresses++; } /* initialize all valid contexts */ iwl_init_context(priv); /************************ * 5. Setup HW constants ************************/ if (iwl_set_hw_params(priv)) { IWL_ERR(priv, "failed to set hw parameters\n"); goto out_free_eeprom; } /******************* * 6. Setup priv *******************/ err = iwl_init_drv(priv); if (err) goto out_free_eeprom; /* At this point both hw and priv are initialized. */ /******************** * 7. Setup services ********************/ pci_enable_msi(priv->pci_dev); iwl_alloc_isr_ict(priv); err = request_irq(priv->pci_dev->irq, iwl_isr_ict, IRQF_SHARED, DRV_NAME, priv); if (err) { IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq); goto out_disable_msi; } iwl_setup_deferred_work(priv); iwl_setup_rx_handlers(priv); iwl_testmode_init(priv); /********************************************* * 8. Enable interrupts and read RFKILL state *********************************************/ /* enable rfkill interrupt: hw bug w/a */ pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd); if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd); } iwl_enable_rfkill_int(priv); /* If platform's RF_KILL switch is NOT set to KILL */ if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) clear_bit(STATUS_RF_KILL_HW, &priv->status); else set_bit(STATUS_RF_KILL_HW, &priv->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, test_bit(STATUS_RF_KILL_HW, &priv->status)); iwl_power_initialize(priv); iwl_tt_initialize(priv); init_completion(&priv->_agn.firmware_loading_complete); err = iwl_request_firmware(priv, true); if (err) goto out_destroy_workqueue; return 0; out_destroy_workqueue: destroy_workqueue(priv->workqueue); priv->workqueue = NULL; free_irq(priv->pci_dev->irq, priv); out_disable_msi: iwl_free_isr_ict(priv); pci_disable_msi(priv->pci_dev); iwl_uninit_drv(priv); out_free_eeprom: iwl_eeprom_free(priv); out_iounmap: pci_iounmap(pdev, priv->hw_base); out_pci_release_regions: pci_set_drvdata(pdev, NULL); pci_release_regions(pdev); out_pci_disable_device: pci_disable_device(pdev); out_ieee80211_free_hw: iwl_free_traffic_mem(priv); ieee80211_free_hw(priv->hw); out: return err; } void __devexit iwl_remove(struct pci_dev *pdev) { struct iwl_priv *priv = pci_get_drvdata(pdev); unsigned long flags; if (!priv) return; wait_for_completion(&priv->_agn.firmware_loading_complete); IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); iwl_dbgfs_unregister(priv); sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); /* ieee80211_unregister_hw call wil cause iwl_mac_stop to * to be called and iwl_down since we are removing the device * we need to set STATUS_EXIT_PENDING bit. */ set_bit(STATUS_EXIT_PENDING, &priv->status); iwl_testmode_cleanup(priv); iwl_leds_exit(priv); if (priv->mac80211_registered) { ieee80211_unregister_hw(priv->hw); priv->mac80211_registered = 0; } /* Reset to low power before unloading driver. */ iwl_apm_stop(priv); iwl_tt_exit(priv); /* make sure we flush any pending irq or * tasklet for the driver */ spin_lock_irqsave(&priv->lock, flags); iwl_disable_interrupts(priv); spin_unlock_irqrestore(&priv->lock, flags); iwl_synchronize_irq(priv); iwl_dealloc_ucode_pci(priv); if (priv->rxq.bd) iwlagn_rx_queue_free(priv, &priv->rxq); iwlagn_hw_txq_ctx_free(priv); iwl_eeprom_free(priv); /*netif_stop_queue(dev); */ flush_workqueue(priv->workqueue); /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes * priv->workqueue... so we can't take down the workqueue * until now... */ destroy_workqueue(priv->workqueue); priv->workqueue = NULL; iwl_free_traffic_mem(priv); free_irq(priv->pci_dev->irq, priv); pci_disable_msi(priv->pci_dev); pci_iounmap(pdev, priv->hw_base); pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); iwl_uninit_drv(priv); iwl_free_isr_ict(priv); dev_kfree_skb(priv->beacon_skb); ieee80211_free_hw(priv->hw); } /***************************************************************************** * * driver and module entry point * *****************************************************************************/ static int __init iwl_init(void) { int ret; pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); pr_info(DRV_COPYRIGHT "\n"); ret = iwlagn_rate_control_register(); if (ret) { pr_err("Unable to register rate control algorithm: %d\n", ret); return ret; } ret = iwl_pci_register_driver(); if (ret) goto error_register; return ret; error_register: iwlagn_rate_control_unregister(); return ret; } static void __exit iwl_exit(void) { iwl_pci_unregister_driver(); iwlagn_rate_control_unregister(); } module_exit(iwl_exit); module_init(iwl_init); #ifdef CONFIG_IWLWIFI_DEBUG module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "debug output mask"); #endif module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO); MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])"); module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO); MODULE_PARM_DESC(queues_num, "number of hw queues."); module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO); MODULE_PARM_DESC(11n_disable, "disable 11n functionality"); module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K, int, S_IRUGO); MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size"); module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO); MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int, S_IRUGO); MODULE_PARM_DESC(ucode_alternative, "specify ucode alternative to use from ucode file"); module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO); MODULE_PARM_DESC(antenna_coupling, "specify antenna coupling in dB (defualt: 0 dB)"); module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO); MODULE_PARM_DESC(bt_ch_inhibition, "Disable BT channel inhibition (default: enable)"); module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO); MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])"); module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO); MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])"); /* * set bt_coex_active to true, uCode will do kill/defer * every time the priority line is asserted (BT is sending signals on the * priority line in the PCIx). * set bt_coex_active to false, uCode will ignore the BT activity and * perform the normal operation * * User might experience transmit issue on some platform due to WiFi/BT * co-exist problem. The possible behaviors are: * Able to scan and finding all the available AP * Not able to associate with any AP * On those platforms, WiFi communication can be restored by set * "bt_coex_active" module parameter to "false" * * default: bt_coex_active = true (BT_COEX_ENABLE) */ module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active, bool, S_IRUGO); MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)"); module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO); MODULE_PARM_DESC(led_mode, "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)"); /* * For now, keep using power level 1 instead of automatically * adjusting ... */ module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust, bool, S_IRUGO); MODULE_PARM_DESC(no_sleep_autoadjust, "don't automatically adjust sleep level " "according to maximum network latency (default: true)");