/****************************************************************************** * * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. * * Portions of this file are derived from the ipw3945 project, as well * as portions of the ieee80211 subsystem header files. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "iwl-eeprom.h" #include "iwl-dev.h" #include "iwl-core.h" #include "iwl-io.h" #include "iwl-helpers.h" #include "iwl-sta.h" #include "iwl-agn-calib.h" #include "iwl-agn.h" #include "iwl-shared.h" #include "iwl-bus.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"); 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->shrd->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, hw_params(priv).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 iwl_trans_send_cmd(trans(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->shrd->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->shrd->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->shrd->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv->shrd)) 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->shrd->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) goto out; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv->shrd)) 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->shrd->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->shrd->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv->shrd)) 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(&bus(priv)->reg_lock, reg_flags); if (iwl_grab_nic_access(bus(priv))) { spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags); return; } /* Set starting address; reads will auto-increment */ iwl_write32(bus(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(bus(priv), HBUS_TARG_MEM_RDAT); time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT); if (mode == 0) { trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev); } else { data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT); trace_iwlwifi_dev_ucode_cont_event(priv, time, data, ev); } } /* Allow device to power down */ iwl_release_nic_access(bus(priv)); spin_unlock_irqrestore(&bus(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 (iwlagn_hw_valid_rtc_data_addr(base)) { capacity = iwl_read_targ_mem(bus(priv), base); num_wraps = iwl_read_targ_mem(bus(priv), base + (2 * sizeof(u32))); mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32))); next_entry = iwl_read_targ_mem(bus(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->shrd->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->shrd->status)) return; /* do nothing if rf-kill is on */ if (!iwl_is_ready_rf(priv->shrd)) return; IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL); } /***************************************************************************** * * 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_shared *shrd = dev_get_drvdata(d); return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd)); } static ssize_t store_debug_level(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_shared *shrd = dev_get_drvdata(d); struct iwl_priv *priv = shrd->priv; 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 { shrd->dbg_level_dev = val; if (iwl_alloc_traffic_mem(priv)) IWL_ERR(shrd->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_shared *shrd = dev_get_drvdata(d); struct iwl_priv *priv = shrd->priv; if (!iwl_is_alive(priv->shrd)) 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->shrd)) 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); iwl_free_fw_img(priv, &priv->ucode_wowlan); } 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; } static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) { int i; /* * The default context is always valid, * the PAN context depends on uCode. */ priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS); if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN); 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].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].interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P) priv->contexts[IWL_RXON_CTX_PAN].interface_modes |= BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO); 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); } 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, *wowlan_inst, *wowlan_data; size_t inst_size, data_size, init_size, init_data_size, wowlan_inst_size, wowlan_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_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_mod_params.wanted_ucode_alternative; int 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_WOWLAN_INST: pieces->wowlan_inst = tlv_data; pieces->wowlan_inst_size = tlv_len; break; case IWL_UCODE_TLV_WOWLAN_DATA: pieces->wowlan_data = tlv_data; pieces->wowlan_data_size = tlv_len; 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; unsigned int api_ok = priv->cfg->ucode_api_ok; 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, }; if (!api_ok) api_ok = api_max; memset(&pieces, 0, sizeof(pieces)); if (!ucode_raw) { if (priv->fw_index <= api_ok) 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_ok) { if (api_ok != api_max) IWL_ERR(priv, "Firmware has old API version, " "expected v%u through v%u, got v%u.\n", api_ok, api_max, api_ver); else IWL_ERR(priv, "Firmware has old API version, " "expected v%u, got v%u.\n", api_max, api_ver); IWL_ERR(priv, "New firmware can be obtained from " "http://www.intellinuxwireless.org/.\n"); } } 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 > hw_params(priv).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 > hw_params(priv).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 > hw_params(priv).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 > hw_params(priv).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; } /* WoWLAN instructions and data */ if (pieces.wowlan_inst_size && pieces.wowlan_data_size) { if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code, pieces.wowlan_inst, pieces.wowlan_inst_size)) goto err_pci_alloc; if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data, pieces.wowlan_data, pieces.wowlan_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->init_evtlog_ptr = pieces.init_evtlog_ptr; if (pieces.init_evtlog_size) priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12; else priv->init_evtlog_size = priv->cfg->base_params->max_event_log_size; priv->init_errlog_ptr = pieces.init_errlog_ptr; priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr; if (pieces.inst_evtlog_size) priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12; else priv->inst_evtlog_size = priv->cfg->base_params->max_event_log_size; priv->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; /* * if not PAN, then don't support P2P -- might be a uCode * packaging bug or due to the eeprom check above */ if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P; if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) { priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; } else { priv->sta_key_max_num = STA_KEY_MAX_NUM; priv->shrd->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->phy_calib_chain_noise_reset_cmd = ucode_capa.standard_phy_calibration_size; priv->phy_calib_chain_noise_gain_cmd = ucode_capa.standard_phy_calibration_size + 1; /* initialize all valid contexts */ iwl_init_context(priv, ucode_capa.flags); /************************************************** * 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->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->firmware_loading_complete); device_release_driver(priv->bus->dev); release_firmware(ucode_raw); } 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->shrd->lock, flags); iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); spin_unlock_irqrestore(&priv->shrd->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(hw_params(priv).ct_kill_threshold); adv_cmd.critical_temperature_exit = cpu_to_le32(hw_params(priv).ct_kill_exit_threshold); ret = iwl_trans_send_cmd_pdu(trans(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", hw_params(priv).ct_kill_threshold, hw_params(priv).ct_kill_exit_threshold); } else { cmd.critical_temperature_R = cpu_to_le32(hw_params(priv).ct_kill_threshold); ret = iwl_trans_send_cmd_pdu(trans(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", hw_params(priv).ct_kill_threshold); } } static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) { struct iwl_calib_cfg_cmd calib_cfg_cmd; struct iwl_host_cmd cmd = { .id = CALIBRATION_CFG_CMD, .len = { sizeof(struct iwl_calib_cfg_cmd), }, .data = { &calib_cfg_cmd, }, }; memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL; calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); return iwl_trans_send_cmd(trans(priv), &cmd); } static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) { struct iwl_tx_ant_config_cmd tx_ant_cmd = { .valid = cpu_to_le32(valid_tx_ant), }; if (IWL_UCODE_API(priv->ucode_ver) > 1) { IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); return iwl_trans_send_cmd_pdu(trans(priv), TX_ANT_CONFIGURATION_CMD, CMD_SYNC, sizeof(struct iwl_tx_ant_config_cmd), &tx_ant_cmd); } else { IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); return -EOPNOTSUPP; } } /** * 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]; /*TODO: this should go to the transport layer */ iwl_reset_ict(trans(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->shrd->status); /* Enable watchdog to monitor the driver tx queues */ iwl_setup_watchdog(priv); if (iwl_is_rfkill(priv->shrd)) 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 (hw_params(priv).calib_rt_cfg) iwlagn_send_calib_cfg_rt(priv, hw_params(priv).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) && !priv->shrd->wowlan) { 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); } if (!priv->shrd->wowlan) { /* WoWLAN ucode will not reply in the same way, skip it */ iwl_reset_run_time_calib(priv); } set_bit(STATUS_READY, &priv->shrd->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); /* * If active, scanning won't cancel it, so say it expired. * No race since we hold the mutex here and a new one * can't come in at this time. */ ieee80211_remain_on_channel_expired(priv->hw); exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->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->shrd->status); if (priv->shrd->mac80211_registered) ieee80211_stop_queues(priv->hw); /* Clear out all status bits but a few that are stable across reset */ priv->shrd->status &= test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) << STATUS_RF_KILL_HW | test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) << STATUS_GEO_CONFIGURED | test_bit(STATUS_FW_ERROR, &priv->shrd->status) << STATUS_FW_ERROR | test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) << STATUS_EXIT_PENDING; iwl_trans_stop_device(trans(priv)); dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = NULL; } static void iwl_down(struct iwl_priv *priv) { mutex_lock(&priv->shrd->mutex); __iwl_down(priv); mutex_unlock(&priv->shrd->mutex); iwl_cancel_deferred_work(priv); } #define MAX_HW_RESTARTS 5 static int __iwl_up(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; int ret; lockdep_assert_held(&priv->shrd->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->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->shrd->status); __iwl_down(priv); clear_bit(STATUS_EXIT_PENDING, &priv->shrd->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->shrd->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) || test_bit(STATUS_SCANNING, &priv->shrd->status)) { mutex_unlock(&priv->shrd->mutex); return; } if (priv->start_calib) { iwl_chain_noise_calibration(priv); iwl_sensitivity_calibration(priv); } mutex_unlock(&priv->shrd->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->shrd->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->shrd->status)) return; if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) { mutex_lock(&priv->shrd->mutex); iwlagn_prepare_restart(priv); mutex_unlock(&priv->shrd->mutex); iwl_cancel_deferred_work(priv); ieee80211_restart_hw(priv->hw); } else { WARN_ON(1); } } /***************************************************************************** * * 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 (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) { hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT | WIPHY_WOWLAN_EAP_IDENTITY_REQ | WIPHY_WOWLAN_RFKILL_RELEASE; if (!iwlagn_mod_params.sw_crypto) hw->wiphy->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | WIPHY_WOWLAN_GTK_REKEY_FAILURE; hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS; hw->wiphy->wowlan.pattern_min_len = IWLAGN_WOWLAN_MIN_PATTERN_LEN; hw->wiphy->wowlan.pattern_max_len = IWLAGN_WOWLAN_MAX_PATTERN_LEN; } 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->shrd->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->shrd->mutex); ret = __iwl_up(priv); mutex_unlock(&priv->shrd->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->shrd->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->shrd->workqueue); /* User space software may expect getting rfkill changes * even if interface is down */ iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF); iwl_enable_rfkill_int(priv); IWL_DEBUG_MAC80211(priv, "leave\n"); } #ifdef CONFIG_PM static int iwlagn_send_patterns(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan) { struct iwlagn_wowlan_patterns_cmd *pattern_cmd; struct iwl_host_cmd cmd = { .id = REPLY_WOWLAN_PATTERNS, .dataflags[0] = IWL_HCMD_DFL_NOCOPY, .flags = CMD_SYNC, }; int i, err; if (!wowlan->n_patterns) return 0; cmd.len[0] = sizeof(*pattern_cmd) + wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern); pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); if (!pattern_cmd) return -ENOMEM; pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); for (i = 0; i < wowlan->n_patterns; i++) { int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); memcpy(&pattern_cmd->patterns[i].mask, wowlan->patterns[i].mask, mask_len); memcpy(&pattern_cmd->patterns[i].pattern, wowlan->patterns[i].pattern, wowlan->patterns[i].pattern_len); pattern_cmd->patterns[i].mask_size = mask_len; pattern_cmd->patterns[i].pattern_size = wowlan->patterns[i].pattern_len; } cmd.data[0] = pattern_cmd; err = iwl_trans_send_cmd(trans(priv), &cmd); kfree(pattern_cmd); return err; } #endif static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct cfg80211_gtk_rekey_data *data) { struct iwl_priv *priv = hw->priv; if (iwlagn_mod_params.sw_crypto) return; mutex_lock(&priv->shrd->mutex); if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif) goto out; memcpy(priv->kek, data->kek, NL80211_KEK_LEN); memcpy(priv->kck, data->kck, NL80211_KCK_LEN); priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); priv->have_rekey_data = true; out: mutex_unlock(&priv->shrd->mutex); } struct wowlan_key_data { struct iwl_rxon_context *ctx; struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc; struct iwlagn_wowlan_tkip_params_cmd *tkip; const u8 *bssid; bool error, use_rsc_tsc, use_tkip; }; #ifdef CONFIG_PM static void iwlagn_convert_p1k(u16 *p1k, __le16 *out) { int i; for (i = 0; i < IWLAGN_P1K_SIZE; i++) out[i] = cpu_to_le16(p1k[i]); } static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key, void *_data) { struct iwl_priv *priv = hw->priv; struct wowlan_key_data *data = _data; struct iwl_rxon_context *ctx = data->ctx; struct aes_sc *aes_sc, *aes_tx_sc = NULL; struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; struct iwlagn_p1k_cache *rx_p1ks; u8 *rx_mic_key; struct ieee80211_key_seq seq; u32 cur_rx_iv32 = 0; u16 p1k[IWLAGN_P1K_SIZE]; int ret, i; mutex_lock(&priv->shrd->mutex); if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta && !ctx->key_mapping_keys) ret = iwl_set_default_wep_key(priv, ctx, key); else ret = iwl_set_dynamic_key(priv, ctx, key, sta); if (ret) { IWL_ERR(priv, "Error setting key during suspend!\n"); data->error = true; } switch (key->cipher) { case WLAN_CIPHER_SUITE_TKIP: if (sta) { tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; rx_p1ks = data->tkip->rx_uni; ieee80211_get_key_tx_seq(key, &seq); tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); iwlagn_convert_p1k(p1k, data->tkip->tx.p1k); memcpy(data->tkip->mic_keys.tx, &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], IWLAGN_MIC_KEY_SIZE); rx_mic_key = data->tkip->mic_keys.rx_unicast; } else { tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; rx_p1ks = data->tkip->rx_multi; rx_mic_key = data->tkip->mic_keys.rx_mcast; } /* * For non-QoS this relies on the fact that both the uCode and * mac80211 use TID 0 (as they need to to avoid replay attacks) * for checking the IV in the frames. */ for (i = 0; i < IWLAGN_NUM_RSC; i++) { ieee80211_get_key_rx_seq(key, i, &seq); tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); /* wrapping isn't allowed, AP must rekey */ if (seq.tkip.iv32 > cur_rx_iv32) cur_rx_iv32 = seq.tkip.iv32; } ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k); iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k); ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32 + 1, p1k); iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k); memcpy(rx_mic_key, &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], IWLAGN_MIC_KEY_SIZE); data->use_tkip = true; data->use_rsc_tsc = true; break; case WLAN_CIPHER_SUITE_CCMP: if (sta) { u8 *pn = seq.ccmp.pn; aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; ieee80211_get_key_tx_seq(key, &seq); aes_tx_sc->pn = cpu_to_le64( (u64)pn[5] | ((u64)pn[4] << 8) | ((u64)pn[3] << 16) | ((u64)pn[2] << 24) | ((u64)pn[1] << 32) | ((u64)pn[0] << 40)); } else aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; /* * For non-QoS this relies on the fact that both the uCode and * mac80211 use TID 0 for checking the IV in the frames. */ for (i = 0; i < IWLAGN_NUM_RSC; i++) { u8 *pn = seq.ccmp.pn; ieee80211_get_key_rx_seq(key, i, &seq); aes_sc->pn = cpu_to_le64( (u64)pn[5] | ((u64)pn[4] << 8) | ((u64)pn[3] << 16) | ((u64)pn[2] << 24) | ((u64)pn[1] << 32) | ((u64)pn[0] << 40)); } data->use_rsc_tsc = true; break; } mutex_unlock(&priv->shrd->mutex); } static int iwlagn_mac_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) { struct iwl_priv *priv = hw->priv; struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd; struct iwl_rxon_cmd rxon; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd; struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {}; struct wowlan_key_data key_data = { .ctx = ctx, .bssid = ctx->active.bssid_addr, .use_rsc_tsc = false, .tkip = &tkip_cmd, .use_tkip = false, }; int ret, i; u16 seq; if (WARN_ON(!wowlan)) return -EINVAL; mutex_lock(&priv->shrd->mutex); /* Don't attempt WoWLAN when not associated, tear down instead. */ if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION || !iwl_is_associated_ctx(ctx)) { ret = 1; goto out; } key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); if (!key_data.rsc_tsc) { ret = -ENOMEM; goto out; } memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd)); /* * We know the last used seqno, and the uCode expects to know that * one, it will increment before TX. */ seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ; wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq); /* * For QoS counters, we store the one to use next, so subtract 0x10 * since the uCode will add 0x10 before using the value. */ for (i = 0; i < 8; i++) { seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number; seq -= 0x10; wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq); } if (wowlan->disconnect) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS | IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE); if (wowlan->magic_pkt) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET); if (wowlan->gtk_rekey_failure) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL); if (wowlan->eap_identity_req) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ); if (wowlan->four_way_handshake) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE); if (wowlan->rfkill_release) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL); if (wowlan->n_patterns) wakeup_filter_cmd.enabled |= cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH); iwl_scan_cancel_timeout(priv, 200); memcpy(&rxon, &ctx->active, sizeof(rxon)); iwl_trans_stop_device(trans(priv)); priv->shrd->wowlan = true; ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan, IWL_UCODE_WOWLAN); if (ret) goto error; /* now configure WoWLAN ucode */ ret = iwl_alive_start(priv); if (ret) goto error; memcpy(&ctx->staging, &rxon, sizeof(rxon)); ret = iwlagn_commit_rxon(priv, ctx); if (ret) goto error; ret = iwl_power_update_mode(priv, true); if (ret) goto error; if (!iwlagn_mod_params.sw_crypto) { /* mark all keys clear */ priv->ucode_key_table = 0; ctx->key_mapping_keys = 0; /* * This needs to be unlocked due to lock ordering * constraints. Since we're in the suspend path * that isn't really a problem though. */ mutex_unlock(&priv->shrd->mutex); ieee80211_iter_keys(priv->hw, ctx->vif, iwlagn_wowlan_program_keys, &key_data); mutex_lock(&priv->shrd->mutex); if (key_data.error) { ret = -EIO; goto error; } if (key_data.use_rsc_tsc) { struct iwl_host_cmd rsc_tsc_cmd = { .id = REPLY_WOWLAN_TSC_RSC_PARAMS, .flags = CMD_SYNC, .data[0] = key_data.rsc_tsc, .dataflags[0] = IWL_HCMD_DFL_NOCOPY, .len[0] = sizeof(*key_data.rsc_tsc), }; ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd); if (ret) goto error; } if (key_data.use_tkip) { ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_TKIP_PARAMS, CMD_SYNC, sizeof(tkip_cmd), &tkip_cmd); if (ret) goto error; } if (priv->have_rekey_data) { memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN); kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN); kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); kek_kck_cmd.replay_ctr = priv->replay_ctr; ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_KEK_KCK_MATERIAL, CMD_SYNC, sizeof(kek_kck_cmd), &kek_kck_cmd); if (ret) goto error; } } ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER, CMD_SYNC, sizeof(wakeup_filter_cmd), &wakeup_filter_cmd); if (ret) goto error; ret = iwlagn_send_patterns(priv, wowlan); if (ret) goto error; device_set_wakeup_enable(priv->bus->dev, true); /* Now let the ucode operate on its own */ iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); goto out; error: priv->shrd->wowlan = false; iwlagn_prepare_restart(priv); ieee80211_restart_hw(priv->hw); out: mutex_unlock(&priv->shrd->mutex); kfree(key_data.rsc_tsc); return ret; } static int iwlagn_mac_resume(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; struct ieee80211_vif *vif; unsigned long flags; u32 base, status = 0xffffffff; int ret = -EIO; mutex_lock(&priv->shrd->mutex); iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); base = priv->device_pointers.error_event_table; if (iwlagn_hw_valid_rtc_data_addr(base)) { spin_lock_irqsave(&bus(priv)->reg_lock, flags); ret = iwl_grab_nic_access_silent(bus(priv)); if (ret == 0) { iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base); status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT); iwl_release_nic_access(bus(priv)); } spin_unlock_irqrestore(&bus(priv)->reg_lock, flags); #ifdef CONFIG_IWLWIFI_DEBUGFS if (ret == 0) { if (!priv->wowlan_sram) priv->wowlan_sram = kzalloc(priv->ucode_wowlan.data.len, GFP_KERNEL); if (priv->wowlan_sram) _iwl_read_targ_mem_words( bus(priv), 0x800000, priv->wowlan_sram, priv->ucode_wowlan.data.len / 4); } #endif } /* we'll clear ctx->vif during iwlagn_prepare_restart() */ vif = ctx->vif; priv->shrd->wowlan = false; device_set_wakeup_enable(priv->bus->dev, false); iwlagn_prepare_restart(priv); memset((void *)&ctx->active, 0, sizeof(ctx->active)); iwl_connection_init_rx_config(priv, ctx); iwlagn_set_rxon_chain(priv, ctx); mutex_unlock(&priv->shrd->mutex); ieee80211_resume_disconnect(vif); return 1; } #endif 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; iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key); } 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; 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; } /* * We could program these keys into the hardware as well, but we * don't expect much multicast traffic in IBSS and having keys * for more stations is probably more useful. * * Mark key TX-only and return 0. */ if (vif->type == NL80211_IFTYPE_ADHOC && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { key->hw_key_idx = WEP_INVALID_OFFSET; return 0; } /* If they key was TX-only, accept deletion */ if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET) return 0; mutex_lock(&priv->shrd->mutex); iwl_scan_cancel_timeout(priv, 100); BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT); /* * 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 == IWLAGN_HW_KEY_DEFAULT; } switch (cmd) { case SET_KEY: if (is_default_wep_key) { ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key); break; } ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta); if (ret) { /* * can't add key for RX, but we don't need it * in the device for TX so still return 0 */ ret = 0; key->hw_key_idx = WEP_INVALID_OFFSET; } 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); IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); break; default: ret = -EINVAL; } mutex_unlock(&priv->shrd->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; struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); 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->shrd->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->shrd->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->agg_tids_count++; IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", priv->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->agg_tids_count > 0)) { priv->agg_tids_count--; IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", priv->agg_tids_count); } if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->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); iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(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->shrd->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->shrd->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->shrd->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->shrd->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->shrd->mutex); if (iwl_is_rfkill(priv->shrd)) goto out; if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) || test_bit(STATUS_SCANNING, &priv->shrd->status) || test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status)) goto out; if (!iwl_is_associated_ctx(ctx)) goto out; if (!priv->cfg->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->shrd->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->shrd->lock); iwl_set_rate(priv); /* * at this point, staging_rxon has the * configuration for channel switch */ set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status); priv->switch_channel = cpu_to_le16(ch); if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) { clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status); priv->switch_channel = 0; ieee80211_chswitch_done(ctx->vif, false); } out: mutex_unlock(&priv->shrd->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->shrd->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->shrd->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->shrd->mutex); IWL_DEBUG_MAC80211(priv, "enter\n"); if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) { IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n"); goto done; } if (iwl_is_rfkill(priv->shrd)) { 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"); iwl_trans_wait_tx_queue_empty(trans(priv)); done: mutex_unlock(&priv->shrd->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } void iwlagn_disable_roc(struct iwl_priv *priv) { struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN]; lockdep_assert_held(&priv->shrd->mutex); if (!priv->hw_roc_setup) return; ctx->staging.dev_type = RXON_DEV_TYPE_P2P; ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->hw_roc_channel = NULL; memset(ctx->staging.node_addr, 0, ETH_ALEN); iwlagn_commit_rxon(priv, ctx); ctx->is_active = false; priv->hw_roc_setup = false; } static void iwlagn_disable_roc_work(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, hw_roc_disable_work.work); mutex_lock(&priv->shrd->mutex); iwlagn_disable_roc(priv); mutex_unlock(&priv->shrd->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; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN]; int err = 0; if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN))) return -EOPNOTSUPP; if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT))) return -EOPNOTSUPP; mutex_lock(&priv->shrd->mutex); /* * TODO: Remove this hack! Firmware needs to be updated * to allow longer off-channel periods in scanning for * this use case, based on a flag (and we'll need an API * flag in the firmware when it has that). */ if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80) duration = 80; if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) { err = -EBUSY; goto out; } priv->hw_roc_channel = channel; priv->hw_roc_chantype = channel_type; priv->hw_roc_duration = duration; cancel_delayed_work(&priv->hw_roc_disable_work); if (!ctx->is_active) { ctx->is_active = true; ctx->staging.dev_type = RXON_DEV_TYPE_P2P; memcpy(ctx->staging.node_addr, priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr, ETH_ALEN); memcpy(ctx->staging.bssid_addr, priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr, ETH_ALEN); err = iwlagn_commit_rxon(priv, ctx); if (err) goto out; ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK | RXON_FILTER_PROMISC_MSK | RXON_FILTER_CTL2HOST_MSK; err = iwlagn_commit_rxon(priv, ctx); if (err) { iwlagn_disable_roc(priv); goto out; } priv->hw_roc_setup = true; } err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band); if (err) iwlagn_disable_roc(priv); out: mutex_unlock(&priv->shrd->mutex); return err; } static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN))) return -EOPNOTSUPP; mutex_lock(&priv->shrd->mutex); iwl_scan_cancel_timeout(priv, priv->hw_roc_duration); iwlagn_disable_roc(priv); mutex_unlock(&priv->shrd->mutex); return 0; } static int iwl_mac_tx_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const u8 *bssid, enum ieee80211_tx_sync_type type) { 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; mutex_lock(&priv->shrd->mutex); if (iwl_is_associated_ctx(ctx)) { ret = 0; goto out; } if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) { ret = -EBUSY; goto out; } ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id); if (ret) goto out; if (WARN_ON(sta_id != ctx->ap_sta_id)) { ret = -EIO; goto out_remove_sta; } memcpy(ctx->bssid, bssid, ETH_ALEN); ctx->preauth_bssid = true; ret = iwlagn_commit_rxon(priv, ctx); if (ret == 0) goto out; out_remove_sta: iwl_remove_station(priv, sta_id, bssid); out: mutex_unlock(&priv->shrd->mutex); return ret; } static void iwl_mac_finish_tx_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const u8 *bssid, enum ieee80211_tx_sync_type type) { struct iwl_priv *priv = hw->priv; struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; struct iwl_rxon_context *ctx = vif_priv->ctx; mutex_lock(&priv->shrd->mutex); if (iwl_is_associated_ctx(ctx)) goto out; iwl_remove_station(priv, ctx->ap_sta_id, bssid); ctx->preauth_bssid = false; /* no need to commit */ out: mutex_unlock(&priv->shrd->mutex); } /***************************************************************************** * * driver setup and teardown * *****************************************************************************/ static void iwl_setup_deferred_work(struct iwl_priv *priv) { priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME); init_waitqueue_head(&priv->shrd->wait_command_queue); INIT_WORK(&priv->restart, iwl_bg_restart); 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->hw_roc_disable_work, iwlagn_disable_roc_work); iwl_setup_scan_deferred_work(priv); if (priv->cfg->lib->bt_setup_deferred_work) priv->cfg->lib->bt_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; } static void iwl_cancel_deferred_work(struct iwl_priv *priv) { if (priv->cfg->lib->cancel_deferred_work) priv->cfg->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); cancel_delayed_work_sync(&priv->hw_roc_disable_work); 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->shrd->sta_lock); mutex_init(&priv->shrd->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->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 = iwl_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); iwl_free_geos(priv); iwl_free_channel_map(priv); if (priv->tx_cmd_pool) kmem_cache_destroy(priv->tx_cmd_pool); kfree(priv->scan_cmd); kfree(priv->beacon_cmd); #ifdef CONFIG_IWLWIFI_DEBUGFS kfree(priv->wowlan_sram); #endif } 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->shrd->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->shrd->mutex); } struct ieee80211_ops iwlagn_hw_ops = { .tx = iwlagn_mac_tx, .start = iwlagn_mac_start, .stop = iwlagn_mac_stop, #ifdef CONFIG_PM .suspend = iwlagn_mac_suspend, .resume = iwlagn_mac_resume, #endif .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, .set_rekey_data = iwlagn_mac_set_rekey_data, .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, .rssi_callback = iwl_mac_rssi_callback, CFG80211_TESTMODE_CMD(iwl_testmode_cmd) CFG80211_TESTMODE_DUMP(iwl_testmode_dump) .tx_sync = iwl_mac_tx_sync, .finish_tx_sync = iwl_mac_finish_tx_sync, }; static u32 iwl_hw_detect(struct iwl_priv *priv) { return iwl_read32(bus(priv), CSR_HW_REV); } /* Size of one Rx buffer in host DRAM */ #define IWL_RX_BUF_SIZE_4K (4 * 1024) #define IWL_RX_BUF_SIZE_8K (8 * 1024) static int iwl_set_hw_params(struct iwl_priv *priv) { if (iwlagn_mod_params.amsdu_size_8K) hw_params(priv).rx_page_order = get_order(IWL_RX_BUF_SIZE_8K); else hw_params(priv).rx_page_order = get_order(IWL_RX_BUF_SIZE_4K); if (iwlagn_mod_params.disable_11n) priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE; hw_params(priv).num_ampdu_queues = priv->cfg->base_params->num_of_ampdu_queues; hw_params(priv).shadow_reg_enable = priv->cfg->base_params->shadow_reg_enable; hw_params(priv).sku = priv->cfg->sku; hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout; /* Device-specific setup */ return priv->cfg->lib->set_hw_params(priv); } /* 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; } int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_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 = bus; priv->shrd = &priv->_shrd; priv->shrd->bus = bus; priv->shrd->priv = priv; priv->shrd->hw = hw; bus_set_drv_data(priv->bus, priv->shrd); priv->shrd->trans = trans_ops->alloc(priv->shrd); if (priv->shrd->trans == NULL) { err = -ENOMEM; goto out_free_traffic_mem; } /* 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; /* is antenna coupling more than 35dB ? */ priv->bt_ant_couple_ok = (iwlagn_mod_params.ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? true : false; /* enable/disable bt channel inhibition */ priv->bt_ch_announce = iwlagn_mod_params.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(&bus(priv)->reg_lock); spin_lock_init(&priv->shrd->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(bus(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); err = iwl_trans_request_irq(trans(priv)); if (err) goto out_free_trans; if (iwl_trans_prepare_card_hw(trans(priv))) { err = -EIO; IWL_WARN(priv, "Failed, HW not ready\n"); goto out_free_trans; } /***************** * 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_trans; } 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++; } /************************ * 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_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(bus(priv), CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status); else set_bit(STATUS_RF_KILL_HW, &priv->shrd->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, test_bit(STATUS_RF_KILL_HW, &priv->shrd->status)); iwl_power_initialize(priv); iwl_tt_initialize(priv); init_completion(&priv->firmware_loading_complete); err = iwl_request_firmware(priv, true); if (err) goto out_destroy_workqueue; return 0; out_destroy_workqueue: destroy_workqueue(priv->shrd->workqueue); priv->shrd->workqueue = NULL; iwl_uninit_drv(priv); out_free_eeprom: iwl_eeprom_free(priv); out_free_trans: iwl_trans_free(trans(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) { wait_for_completion(&priv->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->shrd->status); iwl_testmode_cleanup(priv); iwl_leds_exit(priv); if (priv->shrd->mac80211_registered) { ieee80211_unregister_hw(priv->hw); priv->shrd->mac80211_registered = 0; } iwl_tt_exit(priv); /*This will stop the queues, move the device to low power state */ iwl_trans_stop_device(trans(priv)); iwl_dealloc_ucode(priv); iwl_eeprom_free(priv); /*netif_stop_queue(dev); */ flush_workqueue(priv->shrd->workqueue); /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes * priv->shrd->workqueue... so we can't take down the workqueue * until now... */ destroy_workqueue(priv->shrd->workqueue); priv->shrd->workqueue = NULL; iwl_free_traffic_mem(priv); iwl_trans_free(trans(priv)); bus_set_drv_data(priv->bus, NULL); iwl_uninit_drv(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, iwlagn_mod_params.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_mod_params.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_mod_params.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_mod_params.bt_ch_announce, bool, S_IRUGO); MODULE_PARM_DESC(bt_ch_inhibition, "Enable 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)"); module_param_named(auto_agg, iwlagn_mod_params.auto_agg, bool, S_IRUGO); MODULE_PARM_DESC(auto_agg, "enable agg w/o check traffic load (default: enable)"); /* * 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)");