| /****************************************************************************** |
| * |
| * 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 <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/delay.h> |
| #include <linux/sched.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/wireless.h> |
| #include <linux/firmware.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_arp.h> |
| |
| #include <net/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #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" |
| #include "iwl-trans.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; |
| |
| for_each_context(priv, ctx) { |
| iwlagn_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, |
| .flags = CMD_SYNC, |
| }; |
| struct ieee80211_tx_info *info; |
| 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 */ |
| info = IEEE80211_SKB_CB(priv->beacon_skb); |
| |
| /* |
| * Let's set up the rate at least somewhat correctly; |
| * it will currently not actually be used by the uCode, |
| * it uses the broadcast station's rate instead. |
| */ |
| if (info->control.rates[0].idx < 0 || |
| info->control.rates[0].flags & IEEE80211_TX_RC_MCS) |
| rate = 0; |
| else |
| rate = info->control.rates[0].idx; |
| |
| 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); |
| |
| /* In mac80211, rates for 5 GHz start at 0 */ |
| if (info->band == IEEE80211_BAND_5GHZ) |
| rate += IWL_FIRST_OFDM_RATE; |
| else 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 trans_send_cmd(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; |
| iwlagn_send_advance_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) { |
| iwlagn_set_rxon_chain(priv, ctx); |
| iwlagn_commit_rxon(priv, ctx); |
| } |
| |
| iwlagn_send_advance_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; |
| |
| dma_unmap_page(priv->bus.dev, rxb->page_dma, |
| PAGE_SIZE << priv->hw_params.rx_page_order, |
| DMA_FROM_DEVICE); |
| 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 |
| * trans_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 = dma_map_page(priv->bus.dev, rxb->page, |
| 0, PAGE_SIZE << priv->hw_params.rx_page_order, |
| DMA_FROM_DEVICE); |
| 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 iwl_priv *priv, struct fw_desc *desc) |
| { |
| if (desc->v_addr) |
| dma_free_coherent(priv->bus.dev, desc->len, |
| desc->v_addr, desc->p_addr); |
| desc->v_addr = NULL; |
| desc->len = 0; |
| } |
| |
| static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img) |
| { |
| iwl_free_fw_desc(priv, &img->code); |
| iwl_free_fw_desc(priv, &img->data); |
| } |
| |
| static void iwl_dealloc_ucode(struct iwl_priv *priv) |
| { |
| iwl_free_fw_img(priv, &priv->ucode_rt); |
| iwl_free_fw_img(priv, &priv->ucode_init); |
| } |
| |
| static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc, |
| const void *data, size_t len) |
| { |
| if (!len) { |
| desc->v_addr = NULL; |
| return -EINVAL; |
| } |
| |
| desc->v_addr = dma_alloc_coherent(priv->bus.dev, len, |
| &desc->p_addr, GFP_KERNEL); |
| if (!desc->v_addr) |
| return -ENOMEM; |
| |
| desc->len = len; |
| memcpy(desc->v_addr, data, len); |
| return 0; |
| } |
| |
| 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->bus.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, &priv->ucode_rt.code, |
| pieces.inst, pieces.inst_size)) |
| goto err_pci_alloc; |
| if (iwl_alloc_fw_desc(priv, &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, &priv->ucode_init.code, |
| pieces.init, pieces.init_size)) |
| goto err_pci_alloc; |
| if (iwl_alloc_fw_desc(priv, &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->bus.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(priv); |
| out_unbind: |
| complete(&priv->_agn.firmware_loading_complete); |
| device_release_driver(priv->bus.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 = trans_send_cmd_pdu(priv, |
| REPLY_CT_KILL_CONFIG_CMD, |
| CMD_SYNC, 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 = trans_send_cmd_pdu(priv, |
| REPLY_CT_KILL_CONFIG_CMD, |
| CMD_SYNC, 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 trans_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 */ |
| if (priv->cfg->bt_params->bt_sco_disable) |
| priv->bt_enable_pspoll = false; |
| else |
| priv->bt_enable_pspoll = true; |
| |
| 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; |
| iwlagn_send_advance_bt_config(priv); |
| priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; |
| priv->cur_rssi_ctx = NULL; |
| |
| 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; |
| } else { |
| /* |
| * default is 2-wire BT coexexistence support |
| */ |
| iwl_send_bt_config(priv); |
| } |
| |
| 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 */ |
| iwlagn_send_tx_ant_config(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); |
| |
| iwlagn_set_rxon_chain(priv, ctx); |
| } |
| |
| 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; |
| priv->cur_rssi_ctx = NULL; |
| priv->bt_is_sco = 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; |
| bool bt_is_sco; |
| |
| 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; |
| bt_is_sco = priv->bt_is_sco; |
| |
| __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; |
| priv->bt_is_sco = bt_is_sco; |
| } |
| |
| 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; |
| |
| if (iwlagn_mod_params.power_save) |
| hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| else |
| 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 */ |
| iwlagn_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); |
| } |
| |
| static void iwl_mac_rssi_callback(struct ieee80211_hw *hw, |
| enum ieee80211_rssi_event rssi_event) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| mutex_lock(&priv->mutex); |
| |
| if (priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist) { |
| if (rssi_event == RSSI_EVENT_LOW) |
| priv->bt_enable_pspoll = true; |
| else if (rssi_event == RSSI_EVENT_HIGH) |
| priv->bt_enable_pspoll = false; |
| |
| iwlagn_send_advance_bt_config(priv); |
| } else { |
| IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled," |
| "ignoring RSSI callback\n"); |
| } |
| |
| mutex_unlock(&priv->mutex); |
| } |
| |
| 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, |
| .rssi_callback = iwl_mac_rssi_callback, |
| CFG80211_TESTMODE_CMD(iwl_testmode_cmd) |
| CFG80211_TESTMODE_DUMP(iwl_testmode_dump) |
| }; |
| |
| static u32 iwl_hw_detect(struct iwl_priv *priv) |
| { |
| 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(void *bus_specific, struct iwl_bus_ops *bus_ops, |
| struct iwl_cfg *cfg) |
| { |
| int err = 0; |
| struct iwl_priv *priv; |
| struct ieee80211_hw *hw; |
| u16 num_mac; |
| u32 hw_rev; |
| |
| /************************ |
| * 1. Allocating HW data |
| ************************/ |
| hw = iwl_alloc_all(cfg); |
| if (!hw) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| priv = hw->priv; |
| |
| priv->bus.priv = priv; |
| priv->bus.bus_specific = bus_specific; |
| priv->bus.ops = bus_ops; |
| priv->bus.irq = priv->bus.ops->get_irq(&priv->bus); |
| priv->bus.ops->set_drv_data(&priv->bus, priv); |
| priv->bus.dev = priv->bus.ops->get_dev(&priv->bus); |
| |
| iwl_trans_register(&priv->trans); |
| |
| /* At this point both hw and priv are allocated. */ |
| |
| SET_IEEE80211_DEV(hw, priv->bus.dev); |
| |
| IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); |
| priv->cfg = cfg; |
| 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"); |
| |
| |
| /* 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); |
| |
| /*********************** |
| * 3. Read REV register |
| ***********************/ |
| hw_rev = iwl_hw_detect(priv); |
| IWL_INFO(priv, "Detected %s, REV=0x%X\n", |
| priv->cfg->name, hw_rev); |
| |
| if (iwl_prepare_card_hw(priv)) { |
| err = -EIO; |
| IWL_WARN(priv, "Failed, HW not ready\n"); |
| goto out_free_traffic_mem; |
| } |
| |
| /***************** |
| * 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_free_traffic_mem; |
| } |
| 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)) { |
| err = -ENOENT; |
| 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 |
| ********************/ |
| iwl_alloc_isr_ict(priv); |
| |
| err = request_irq(priv->bus.irq, iwl_isr_ict, IRQF_SHARED, |
| DRV_NAME, priv); |
| if (err) { |
| IWL_ERR(priv, "Error allocating IRQ %d\n", priv->bus.irq); |
| goto out_uninit_drv; |
| } |
| |
| iwl_setup_deferred_work(priv); |
| iwl_setup_rx_handlers(priv); |
| iwl_testmode_init(priv); |
| |
| /********************************************* |
| * 8. Enable interrupts |
| *********************************************/ |
| |
| 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->bus.irq, priv); |
| iwl_free_isr_ict(priv); |
| out_uninit_drv: |
| iwl_uninit_drv(priv); |
| out_free_eeprom: |
| iwl_eeprom_free(priv); |
| out_free_traffic_mem: |
| iwl_free_traffic_mem(priv); |
| ieee80211_free_hw(priv->hw); |
| out: |
| return err; |
| } |
| |
| void __devexit iwl_remove(struct iwl_priv * priv) |
| { |
| unsigned long flags; |
| |
| wait_for_completion(&priv->_agn.firmware_loading_complete); |
| |
| IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); |
| |
| iwl_dbgfs_unregister(priv); |
| sysfs_remove_group(&priv->bus.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(priv); |
| |
| trans_rx_free(priv); |
| trans_tx_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->bus.irq, priv); |
| priv->bus.ops->set_drv_data(&priv->bus, 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])"); |
| |
| module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO); |
| MODULE_PARM_DESC(wd_disable, |
| "Disable stuck queue watchdog timer (default: 0 [enabled])"); |
| |
| /* |
| * 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)"); |
| |
| module_param_named(power_save, iwlagn_mod_params.power_save, |
| bool, S_IRUGO); |
| MODULE_PARM_DESC(power_save, |
| "enable WiFi power management (default: disable)"); |
| |
| module_param_named(power_level, iwlagn_mod_params.power_level, |
| int, S_IRUGO); |
| MODULE_PARM_DESC(power_level, |
| "default power save level (range from 1 - 5, default: 1)"); |
| |
| /* |
| * 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)"); |