kernel.git - Linux vanilla kernels for Fedora – https://fedoraproject.org/wiki/Kernel_Vanilla

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Diffstat (limited to 'kernel-x86_64-debug-fedora.config')

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/****************************************************************************** * * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved. * * Portions of this file are derived from the ipw3945 project, as well * as portions of the ieee80211 subsystem header files. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless <ilw@linux.intel.com> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/delay.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <linux/wireless.h> #include <linux/firmware.h> #include <linux/etherdevice.h> #include <linux/if_arp.h> #include <net/mac80211.h> #include <asm/div64.h> #define DRV_NAME "iwlagn" #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-calib.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 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT #define VS "s" #else #define VS #endif #define DRV_VERSION IWLWIFI_VERSION VD VS MODULE_DESCRIPTION(DRV_DESCRIPTION); MODULE_VERSION(DRV_VERSION); MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); MODULE_ALIAS("iwl4965"); /*************** STATION TABLE MANAGEMENT **** * mac80211 should be examined to determine if sta_info is duplicating * the functionality provided here */ /**************************************************************/ /** * iwl_commit_rxon - commit staging_rxon to hardware * * The RXON command in staging_rxon is committed to the hardware and * the active_rxon structure is updated with the new data. This * function correctly transitions out of the RXON_ASSOC_MSK state if * a HW tune is required based on the RXON structure changes. */ int iwl_commit_rxon(struct iwl_priv *priv) { /* cast away the const for active_rxon in this function */ struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon; int ret; bool new_assoc = !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK); if (!iwl_is_alive(priv)) return -EBUSY; /* always get timestamp with Rx frame */ priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK; ret = iwl_check_rxon_cmd(priv); if (ret) { IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); return -EINVAL; } /* * receive commit_rxon request * abort any previous channel switch if still in process */ if (priv->switch_rxon.switch_in_progress && (priv->switch_rxon.channel != priv->staging_rxon.channel)) { IWL_DEBUG_11H(priv, "abort channel switch on %d\n", le16_to_cpu(priv->switch_rxon.channel)); priv->switch_rxon.switch_in_progress = false; } /* If we don't need to send a full RXON, we can use * iwl_rxon_assoc_cmd which is used to reconfigure filter * and other flags for the current radio configuration. */ if (!iwl_full_rxon_required(priv)) { ret = iwl_send_rxon_assoc(priv); if (ret) { IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); return ret; } memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); iwl_print_rx_config_cmd(priv); return 0; } /* station table will be cleared */ priv->assoc_station_added = 0; /* If we are currently associated and the new config requires * an RXON_ASSOC and the new config wants the associated mask enabled, * we must clear the associated from the active configuration * before we apply the new config */ if (iwl_is_associated(priv) && new_assoc) { IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n"); active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; ret = iwl_send_cmd_pdu(priv, REPLY_RXON, sizeof(struct iwl_rxon_cmd), &priv->active_rxon); /* If the mask clearing failed then we set * active_rxon back to what it was previously */ if (ret) { active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret); return ret; } } IWL_DEBUG_INFO(priv, "Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n" "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"), le16_to_cpu(priv->staging_rxon.channel), priv->staging_rxon.bssid_addr); iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto); /* Apply the new configuration * RXON unassoc clears the station table in uCode, send it before * we add the bcast station. If assoc bit is set, we will send RXON * after having added the bcast and bssid station. */ if (!new_assoc) { ret = iwl_send_cmd_pdu(priv, REPLY_RXON, sizeof(struct iwl_rxon_cmd), &priv->staging_rxon); if (ret) { IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); return ret; } memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); } iwl_clear_stations_table(priv); priv->start_calib = 0; /* Add the broadcast address so we can send broadcast frames */ iwl_add_bcast_station(priv); /* If we have set the ASSOC_MSK and we are in BSS mode then * add the IWL_AP_ID to the station rate table */ if (new_assoc) { if (priv->iw_mode == NL80211_IFTYPE_STATION) { ret = iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1); if (ret == IWL_INVALID_STATION) { IWL_ERR(priv, "Error adding AP address for TX.\n"); return -EIO; } priv->assoc_station_added = 1; if (priv->default_wep_key && iwl_send_static_wepkey_cmd(priv, 0)) IWL_ERR(priv, "Could not send WEP static key.\n"); } /* * allow CTS-to-self if possible for new association. * this is relevant only for 5000 series and up, * but will not damage 4965 */ priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN; /* Apply the new configuration * RXON assoc doesn't clear the station table in uCode, */ ret = iwl_send_cmd_pdu(priv, REPLY_RXON, sizeof(struct iwl_rxon_cmd), &priv->staging_rxon); if (ret) { IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); return ret; } memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); } iwl_print_rx_config_cmd(priv); iwl_init_sensitivity(priv); /* If we issue a new RXON command which required a tune then we must * send a new TXPOWER command or we won't be able to Tx any frames */ ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true); if (ret) { IWL_ERR(priv, "Error sending TX power (%d)\n", ret); return ret; } return 0; } void iwl_update_chain_flags(struct iwl_priv *priv) { if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); iwlcore_commit_rxon(priv); } static void iwl_clear_free_frames(struct iwl_priv *priv) { struct list_head *element; IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n", priv->frames_count); while (!list_empty(&priv->free_frames)) { element = priv->free_frames.next; list_del(element); kfree(list_entry(element, struct iwl_frame, list)); priv->frames_count--; } if (priv->frames_count) { IWL_WARN(priv, "%d frames still in use. Did we lose one?\n", priv->frames_count); priv->frames_count = 0; } } static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv) { struct iwl_frame *frame; struct list_head *element; if (list_empty(&priv->free_frames)) { frame = kzalloc(sizeof(*frame), GFP_KERNEL); if (!frame) { IWL_ERR(priv, "Could not allocate frame!\n"); return NULL; } priv->frames_count++; return frame; } element = priv->free_frames.next; list_del(element); return list_entry(element, struct iwl_frame, list); } static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame) { memset(frame, 0, sizeof(*frame)); list_add(&frame->list, &priv->free_frames); } static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv, struct ieee80211_hdr *hdr, int left) { if (!iwl_is_associated(priv) || !priv->ibss_beacon || ((priv->iw_mode != NL80211_IFTYPE_ADHOC) && (priv->iw_mode != NL80211_IFTYPE_AP))) return 0; if (priv->ibss_beacon->len > left) return 0; memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len); return priv->ibss_beacon->len; } static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv, struct iwl_frame *frame, u8 rate) { struct iwl_tx_beacon_cmd *tx_beacon_cmd; unsigned int frame_size; tx_beacon_cmd = &frame->u.beacon; memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id; tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame, sizeof(frame->u) - sizeof(*tx_beacon_cmd)); BUG_ON(frame_size > MAX_MPDU_SIZE); tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP)) tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK); else tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, 0); tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; return sizeof(*tx_beacon_cmd) + frame_size; } static int iwl_send_beacon_cmd(struct iwl_priv *priv) { struct iwl_frame *frame; unsigned int frame_size; int rc; u8 rate; frame = iwl_get_free_frame(priv); if (!frame) { IWL_ERR(priv, "Could not obtain free frame buffer for beacon " "command.\n"); return -ENOMEM; } rate = iwl_rate_get_lowest_plcp(priv); frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate); rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, &frame->u.cmd[0]); iwl_free_frame(priv, frame); return rc; } static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx) { struct iwl_tfd_tb *tb = &tfd->tbs[idx]; dma_addr_t addr = get_unaligned_le32(&tb->lo); if (sizeof(dma_addr_t) > sizeof(u32)) addr |= ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16; return addr; } static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx) { struct iwl_tfd_tb *tb = &tfd->tbs[idx]; return le16_to_cpu(tb->hi_n_len) >> 4; } static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx, dma_addr_t addr, u16 len) { struct iwl_tfd_tb *tb = &tfd->tbs[idx]; u16 hi_n_len = len << 4; put_unaligned_le32(addr, &tb->lo); if (sizeof(dma_addr_t) > sizeof(u32)) hi_n_len |= ((addr >> 16) >> 16) & 0xF; tb->hi_n_len = cpu_to_le16(hi_n_len); tfd->num_tbs = idx + 1; } static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd) { return tfd->num_tbs & 0x1f; } /** * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr] * @priv - driver private data * @txq - tx queue * * Does NOT advance any TFD circular buffer read/write indexes * Does NOT free the TFD itself (which is within circular buffer) */ void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) { struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds; struct iwl_tfd *tfd; struct pci_dev *dev = priv->pci_dev; int index = txq->q.read_ptr; int i; int num_tbs; tfd = &tfd_tmp[index]; /* Sanity check on number of chunks */ num_tbs = iwl_tfd_get_num_tbs(tfd); if (num_tbs >= IWL_NUM_OF_TBS) { IWL_ERR(priv, "Too many chunks: %i\n", num_tbs); /* @todo issue fatal error, it is quite serious situation */ return; } /* Unmap tx_cmd */ if (num_tbs) pci_unmap_single(dev, pci_unmap_addr(&txq->meta[index], mapping), pci_unmap_len(&txq->meta[index], len), PCI_DMA_BIDIRECTIONAL); /* Unmap chunks, if any. */ for (i = 1; i < num_tbs; i++) { pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i), iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE); if (txq->txb) { dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]); txq->txb[txq->q.read_ptr].skb[i - 1] = NULL; } } } int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq, dma_addr_t addr, u16 len, u8 reset, u8 pad) { struct iwl_queue *q; struct iwl_tfd *tfd, *tfd_tmp; u32 num_tbs; q = &txq->q; tfd_tmp = (struct iwl_tfd *)txq->tfds; tfd = &tfd_tmp[q->write_ptr]; if (reset) memset(tfd, 0, sizeof(*tfd)); num_tbs = iwl_tfd_get_num_tbs(tfd); /* Each TFD can point to a maximum 20 Tx buffers */ if (num_tbs >= IWL_NUM_OF_TBS) { IWL_ERR(priv, "Error can not send more than %d chunks\n", IWL_NUM_OF_TBS); return -EINVAL; } BUG_ON(addr & ~DMA_BIT_MASK(36)); if (unlikely(addr & ~IWL_TX_DMA_MASK)) IWL_ERR(priv, "Unaligned address = %llx\n", (unsigned long long)addr); iwl_tfd_set_tb(tfd, num_tbs, addr, len); return 0; } /* * Tell nic where to find circular buffer of Tx Frame Descriptors for * given Tx queue, and enable the DMA channel used for that queue. * * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA * channels supported in hardware. */ int iwl_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq) { int txq_id = txq->q.id; /* Circular buffer (TFD queue in DRAM) physical base address */ iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id), txq->q.dma_addr >> 8); return 0; } /****************************************************************************** * * Generic RX handler implementations * ******************************************************************************/ static void iwl_rx_reply_alive(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_alive_resp *palive; struct delayed_work *pwork; palive = &pkt->u.alive_frame; IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", palive->is_valid, palive->ver_type, palive->ver_subtype); if (palive->ver_subtype == INITIALIZE_SUBTYPE) { IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); memcpy(&priv->card_alive_init, &pkt->u.alive_frame, sizeof(struct iwl_init_alive_resp)); pwork = &priv->init_alive_start; } else { IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); memcpy(&priv->card_alive, &pkt->u.alive_frame, sizeof(struct iwl_alive_resp)); pwork = &priv->alive_start; } /* We delay the ALIVE response by 5ms to * give the HW RF Kill time to activate... */ if (palive->is_valid == UCODE_VALID_OK) queue_delayed_work(priv->workqueue, pwork, msecs_to_jiffies(5)); else IWL_WARN(priv, "uCode did not respond OK.\n"); } 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; /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ beacon = ieee80211_beacon_get(priv->hw, priv->vif); if (!beacon) { IWL_ERR(priv, "update beacon failed\n"); return; } mutex_lock(&priv->mutex); /* new beacon skb is allocated every time; dispose previous.*/ if (priv->ibss_beacon) dev_kfree_skb(priv->ibss_beacon); priv->ibss_beacon = beacon; mutex_unlock(&priv->mutex); iwl_send_beacon_cmd(priv); } /** * iwl_bg_statistics_periodic - Timer callback to queue statistics * * This callback is provided in order to send a statistics request. * * This timer function is continually reset to execute within * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION * was received. We need to ensure we receive the statistics in order * to update the temperature used for calibrating the TXPOWER. */ static void iwl_bg_statistics_periodic(unsigned long data) { struct iwl_priv *priv = (struct iwl_priv *)data; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; iwl_send_statistics_request(priv, CMD_ASYNC); } static void iwl_rx_beacon_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { #ifdef CONFIG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl4965_beacon_notif *beacon = (struct iwl4965_beacon_notif *)pkt->u.raw; u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d " "tsf %d %d rate %d\n", le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK, beacon->beacon_notify_hdr.failure_frame, le32_to_cpu(beacon->ibss_mgr_status), le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); #endif if ((priv->iw_mode == NL80211_IFTYPE_AP) && (!test_bit(STATUS_EXIT_PENDING, &priv->status))) queue_work(priv->workqueue, &priv->beacon_update); } /* Handle notification from uCode that card's power state is changing * due to software, hardware, or critical temperature RFKILL */ static void iwl_rx_card_state_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); unsigned long status = priv->status; IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n", (flags & HW_CARD_DISABLED) ? "Kill" : "On", (flags & SW_CARD_DISABLED) ? "Kill" : "On"); if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | RF_CARD_DISABLED)) { iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); iwl_write_direct32(priv, HBUS_TARG_MBX_C, HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); if (!(flags & RXON_CARD_DISABLED)) { iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); iwl_write_direct32(priv, HBUS_TARG_MBX_C, HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); } if (flags & RF_CARD_DISABLED) iwl_tt_enter_ct_kill(priv); } if (!(flags & RF_CARD_DISABLED)) iwl_tt_exit_ct_kill(priv); if (flags & HW_CARD_DISABLED) set_bit(STATUS_RF_KILL_HW, &priv->status); else clear_bit(STATUS_RF_KILL_HW, &priv->status); if (!(flags & RXON_CARD_DISABLED)) iwl_scan_cancel(priv); if ((test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))) wiphy_rfkill_set_hw_state(priv->hw->wiphy, test_bit(STATUS_RF_KILL_HW, &priv->status)); else wake_up_interruptible(&priv->wait_command_queue); } int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src) { if (src == IWL_PWR_SRC_VAUX) { if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_PWR_SRC_VAUX, ~APMG_PS_CTRL_MSK_PWR_SRC); } else { iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, ~APMG_PS_CTRL_MSK_PWR_SRC); } return 0; } /** * iwl_setup_rx_handlers - Initialize Rx handler callbacks * * Setup the RX handlers for each of the reply types sent from the uCode * to the host. * * This function chains into the hardware specific files for them to setup * any hardware specific handlers as well. */ static void iwl_setup_rx_handlers(struct iwl_priv *priv) { priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive; priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error; priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa; priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif; priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = iwl_rx_pm_debug_statistics_notif; priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif; /* * The same handler is used for both the REPLY to a discrete * statistics request from the host as well as for the periodic * statistics notifications (after received beacons) from the uCode. */ priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics; priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics; iwl_setup_spectrum_handlers(priv); iwl_setup_rx_scan_handlers(priv); /* status change handler */ priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif; priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] = iwl_rx_missed_beacon_notif; /* Rx handlers */ priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy; priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx; /* block ack */ priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba; /* Set up hardware specific Rx handlers */ priv->cfg->ops->lib->rx_handler_setup(priv); } /** * iwl_rx_handle - Main entry function for receiving responses from uCode * * Uses the priv->rx_handlers callback function array to invoke * the appropriate handlers, including command responses, * frame-received notifications, and other notifications. */ void iwl_rx_handle(struct iwl_priv *priv) { struct iwl_rx_mem_buffer *rxb; struct iwl_rx_packet *pkt; struct iwl_rx_queue *rxq = &priv->rxq; u32 r, i; int reclaim; unsigned long flags; u8 fill_rx = 0; u32 count = 8; int total_empty; /* uCode's read index (stored in shared DRAM) indicates the last Rx * buffer that the driver may process (last buffer filled by ucode). */ r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; i = rxq->read; /* Rx interrupt, but nothing sent from uCode */ if (i == r) IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i); /* calculate total frames need to be restock after handling RX */ total_empty = r - rxq->write_actual; if (total_empty < 0) total_empty += RX_QUEUE_SIZE; if (total_empty > (RX_QUEUE_SIZE / 2)) fill_rx = 1; while (i != r) { rxb = rxq->queue[i]; /* If an RXB doesn't have a Rx queue slot associated with it, * then a bug has been introduced in the queue refilling * routines -- catch it here */ BUG_ON(rxb == NULL); rxq->queue[i] = NULL; pci_unmap_page(priv->pci_dev, rxb->page_dma, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); pkt = rxb_addr(rxb); trace_iwlwifi_dev_rx(priv, pkt, le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK); /* Reclaim a command buffer only if this packet is a response * to a (driver-originated) command. * If the packet (e.g. Rx frame) originated from uCode, * there is no command buffer to reclaim. * Ucode should set SEQ_RX_FRAME bit if ucode-originated, * but apparently a few don't get set; catch them here. */ reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && (pkt->hdr.cmd != REPLY_RX_PHY_CMD) && (pkt->hdr.cmd != REPLY_RX) && (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) && (pkt->hdr.cmd != REPLY_COMPRESSED_BA) && (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && (pkt->hdr.cmd != REPLY_TX); /* Based on type of command response or notification, * handle those that need handling via function in * rx_handlers table. See iwl_setup_rx_handlers() */ if (priv->rx_handlers[pkt->hdr.cmd]) { IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); priv->isr_stats.rx_handlers[pkt->hdr.cmd]++; priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); } else { /* No handling needed */ IWL_DEBUG_RX(priv, "r %d i %d No handler needed for %s, 0x%02x\n", r, i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); } /* * XXX: After here, we should always check rxb->page * against NULL before touching it or its virtual * memory (pkt). Because some rx_handler might have * already taken or freed the pages. */ if (reclaim) { /* Invoke any callbacks, transfer the buffer to caller, * and fire off the (possibly) blocking iwl_send_cmd() * as we reclaim the driver command queue */ if (rxb->page) iwl_tx_cmd_complete(priv, rxb); else IWL_WARN(priv, "Claim null rxb?\n"); } /* Reuse the page if possible. For notification packets and * SKBs that fail to Rx correctly, add them back into the * rx_free list for reuse later. */ spin_lock_irqsave(&rxq->lock, flags); if (rxb->page != NULL) { rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page, 0, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); list_add_tail(&rxb->list, &rxq->rx_free); rxq->free_count++; } else list_add_tail(&rxb->list, &rxq->rx_used); spin_unlock_irqrestore(&rxq->lock, flags); i = (i + 1) & RX_QUEUE_MASK; /* If there are a lot of unused frames, * restock the Rx queue so ucode wont assert. */ if (fill_rx) { count++; if (count >= 8) { rxq->read = i; iwl_rx_replenish_now(priv); count = 0; } } } /* Backtrack one entry */ rxq->read = i; if (fill_rx) iwl_rx_replenish_now(priv); else iwl_rx_queue_restock(priv); } /* call this function to flush any scheduled tasklet */ static inline void iwl_synchronize_irq(struct iwl_priv *priv) { /* wait to make sure we flush pending tasklet*/ synchronize_irq(priv->pci_dev->irq); tasklet_kill(&priv->irq_tasklet); } static void iwl_irq_tasklet_legacy(struct iwl_priv *priv) { u32 inta, handled = 0; u32 inta_fh; unsigned long flags; u32 i; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_mask; #endif spin_lock_irqsave(&priv->lock, flags); /* Ack/clear/reset pending uCode interrupts. * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, * and will clear only when CSR_FH_INT_STATUS gets cleared. */ inta = iwl_read32(priv, CSR_INT); iwl_write32(priv, CSR_INT, inta); /* Ack/clear/reset pending flow-handler (DMA) interrupts. * Any new interrupts that happen after this, either while we're * in this tasklet, or later, will show up in next ISR/tasklet. */ inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & IWL_DL_ISR) { /* just for debug */ inta_mask = iwl_read32(priv, CSR_INT_MASK); IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, inta_fh); } #endif spin_unlock_irqrestore(&priv->lock, flags); /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not * atomic, make sure that inta covers all the interrupts that * we've discovered, even if FH interrupt came in just after * reading CSR_INT. */ if (inta_fh & CSR49_FH_INT_RX_MASK) inta |= CSR_INT_BIT_FH_RX; if (inta_fh & CSR49_FH_INT_TX_MASK) inta |= CSR_INT_BIT_FH_TX; /* Now service all interrupt bits discovered above. */ if (inta & CSR_INT_BIT_HW_ERR) { IWL_ERR(priv, "Hardware error detected. Restarting.\n"); /* Tell the device to stop sending interrupts */ iwl_disable_interrupts(priv); priv->isr_stats.hw++; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_HW_ERR; return; } #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { /* NIC fires this, but we don't use it, redundant with WAKEUP */ if (inta & CSR_INT_BIT_SCD) { IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " "the frame/frames.\n"); priv->isr_stats.sch++; } /* Alive notification via Rx interrupt will do the real work */ if (inta & CSR_INT_BIT_ALIVE) { IWL_DEBUG_ISR(priv, "Alive interrupt\n"); priv->isr_stats.alive++; } } #endif /* Safely ignore these bits for debug checks below */ inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); /* HW RF KILL switch toggled */ if (inta & CSR_INT_BIT_RF_KILL) { int hw_rf_kill = 0; if (!(iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) hw_rf_kill = 1; IWL_WARN(priv, "RF_KILL bit toggled to %s.\n", hw_rf_kill ? "disable radio" : "enable radio"); priv->isr_stats.rfkill++; /* driver only loads ucode once setting the interface up. * the driver allows loading the ucode even if the radio * is killed. Hence update the killswitch state here. The * rfkill handler will care about restarting if needed. */ if (!test_bit(STATUS_ALIVE, &priv->status)) { if (hw_rf_kill) set_bit(STATUS_RF_KILL_HW, &priv->status); else clear_bit(STATUS_RF_KILL_HW, &priv->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill); } handled |= CSR_INT_BIT_RF_KILL; } /* Chip got too hot and stopped itself */ if (inta & CSR_INT_BIT_CT_KILL) { IWL_ERR(priv, "Microcode CT kill error detected.\n"); priv->isr_stats.ctkill++; handled |= CSR_INT_BIT_CT_KILL; } /* Error detected by uCode */ if (inta & CSR_INT_BIT_SW_ERR) { IWL_ERR(priv, "Microcode SW error detected. " " Restarting 0x%X.\n", inta); priv->isr_stats.sw++; priv->isr_stats.sw_err = inta; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_SW_ERR; } /* * uCode wakes up after power-down sleep. * Tell device about any new tx or host commands enqueued, * and about any Rx buffers made available while asleep. */ if (inta & CSR_INT_BIT_WAKEUP) { IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); iwl_rx_queue_update_write_ptr(priv, &priv->rxq); for (i = 0; i < priv->hw_params.max_txq_num; i++) iwl_txq_update_write_ptr(priv, &priv->txq[i]); priv->isr_stats.wakeup++; handled |= CSR_INT_BIT_WAKEUP; } /* All uCode command responses, including Tx command responses, * Rx "responses" (frame-received notification), and other * notifications from uCode come through here*/ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { iwl_rx_handle(priv); priv->isr_stats.rx++; iwl_leds_background(priv); handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); } /* This "Tx" DMA channel is used only for loading uCode */ if (inta & CSR_INT_BIT_FH_TX) { IWL_DEBUG_ISR(priv, "uCode load interrupt\n"); priv->isr_stats.tx++; handled |= CSR_INT_BIT_FH_TX; /* Wake up uCode load routine, now that load is complete */ priv->ucode_write_complete = 1; wake_up_interruptible(&priv->wait_command_queue); } if (inta & ~handled) { IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); priv->isr_stats.unhandled++; } if (inta & ~(priv->inta_mask)) { IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", inta & ~priv->inta_mask); IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh); } /* Re-enable all interrupts */ /* only Re-enable if diabled by irq */ if (test_bit(STATUS_INT_ENABLED, &priv->status)) iwl_enable_interrupts(priv); #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { inta = iwl_read32(priv, CSR_INT); inta_mask = iwl_read32(priv, CSR_INT_MASK); inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); } #endif } /* tasklet for iwlagn interrupt */ static void iwl_irq_tasklet(struct iwl_priv *priv) { u32 inta = 0; u32 handled = 0; unsigned long flags; u32 i; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_mask; #endif spin_lock_irqsave(&priv->lock, flags); /* Ack/clear/reset pending uCode interrupts. * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, */ iwl_write32(priv, CSR_INT, priv->inta); inta = priv->inta; #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & IWL_DL_ISR) { /* just for debug */ inta_mask = iwl_read32(priv, CSR_INT_MASK); IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ", inta, inta_mask); } #endif spin_unlock_irqrestore(&priv->lock, flags); /* saved interrupt in inta variable now we can reset priv->inta */ priv->inta = 0; /* Now service all interrupt bits discovered above. */ if (inta & CSR_INT_BIT_HW_ERR) { IWL_ERR(priv, "Hardware error detected. Restarting.\n"); /* Tell the device to stop sending interrupts */ iwl_disable_interrupts(priv); priv->isr_stats.hw++; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_HW_ERR; return; } #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { /* NIC fires this, but we don't use it, redundant with WAKEUP */ if (inta & CSR_INT_BIT_SCD) { IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " "the frame/frames.\n"); priv->isr_stats.sch++; } /* Alive notification via Rx interrupt will do the real work */ if (inta & CSR_INT_BIT_ALIVE) { IWL_DEBUG_ISR(priv, "Alive interrupt\n"); priv->isr_stats.alive++; } } #endif /* Safely ignore these bits for debug checks below */ inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); /* HW RF KILL switch toggled */ if (inta & CSR_INT_BIT_RF_KILL) { int hw_rf_kill = 0; if (!(iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) hw_rf_kill = 1; IWL_WARN(priv, "RF_KILL bit toggled to %s.\n", hw_rf_kill ? "disable radio" : "enable radio"); priv->isr_stats.rfkill++; /* driver only loads ucode once setting the interface up. * the driver allows loading the ucode even if the radio * is killed. Hence update the killswitch state here. The * rfkill handler will care about restarting if needed. */ if (!test_bit(STATUS_ALIVE, &priv->status)) { if (hw_rf_kill) set_bit(STATUS_RF_KILL_HW, &priv->status); else clear_bit(STATUS_RF_KILL_HW, &priv->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill); } handled |= CSR_INT_BIT_RF_KILL; } /* Chip got too hot and stopped itself */ if (inta & CSR_INT_BIT_CT_KILL) { IWL_ERR(priv, "Microcode CT kill error detected.\n"); priv->isr_stats.ctkill++; handled |= CSR_INT_BIT_CT_KILL; } /* Error detected by uCode */ if (inta & CSR_INT_BIT_SW_ERR) { IWL_ERR(priv, "Microcode SW error detected. " " Restarting 0x%X.\n", inta); priv->isr_stats.sw++; priv->isr_stats.sw_err = inta; iwl_irq_handle_error(priv); handled |= CSR_INT_BIT_SW_ERR; } /* uCode wakes up after power-down sleep */ if (inta & CSR_INT_BIT_WAKEUP) { IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); iwl_rx_queue_update_write_ptr(priv, &priv->rxq); for (i = 0; i < priv->hw_params.max_txq_num; i++) iwl_txq_update_write_ptr(priv, &priv->txq[i]); priv->isr_stats.wakeup++; handled |= CSR_INT_BIT_WAKEUP; } /* All uCode command responses, including Tx command responses, * Rx "responses" (frame-received notification), and other * notifications from uCode come through here*/ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX | CSR_INT_BIT_RX_PERIODIC)) { IWL_DEBUG_ISR(priv, "Rx interrupt\n"); if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_RX_MASK); } if (inta & CSR_INT_BIT_RX_PERIODIC) { handled |= CSR_INT_BIT_RX_PERIODIC; iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC); } /* Sending RX interrupt require many steps to be done in the * the device: * 1- write interrupt to current index in ICT table. * 2- dma RX frame. * 3- update RX shared data to indicate last write index. * 4- send interrupt. * This could lead to RX race, driver could receive RX interrupt * but the shared data changes does not reflect this. * this could lead to RX race, RX periodic will solve this race */ iwl_write32(priv, CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_DIS); iwl_rx_handle(priv); /* Only set RX periodic if real RX is received. */ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) iwl_write32(priv, CSR_INT_PERIODIC_REG, CSR_INT_PERIODIC_ENA); priv->isr_stats.rx++; iwl_leds_background(priv); } /* This "Tx" DMA channel is used only for loading uCode */ if (inta & CSR_INT_BIT_FH_TX) { iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK); IWL_DEBUG_ISR(priv, "uCode load interrupt\n"); priv->isr_stats.tx++; handled |= CSR_INT_BIT_FH_TX; /* Wake up uCode load routine, now that load is complete */ priv->ucode_write_complete = 1; wake_up_interruptible(&priv->wait_command_queue); } if (inta & ~handled) { IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); priv->isr_stats.unhandled++; } if (inta & ~(priv->inta_mask)) { IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", inta & ~priv->inta_mask); } /* Re-enable all interrupts */ /* only Re-enable if diabled by irq */ if (test_bit(STATUS_INT_ENABLED, &priv->status)) iwl_enable_interrupts(priv); } /****************************************************************************** * * uCode download functions * ******************************************************************************/ static void iwl_dealloc_ucode_pci(struct iwl_priv *priv) { iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code); iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data); iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup); iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init); iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data); iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot); } static void iwl_nic_start(struct iwl_priv *priv) { /* Remove all resets to allow NIC to operate */ iwl_write32(priv, CSR_RESET, 0); } /** * iwl_read_ucode - Read uCode images from disk file. * * Copy into buffers for card to fetch via bus-mastering */ static int iwl_read_ucode(struct iwl_priv *priv) { struct iwl_ucode_header *ucode; int ret = -EINVAL, index; const struct firmware *ucode_raw; const char *name_pre = priv->cfg->fw_name_pre; const unsigned int api_max = priv->cfg->ucode_api_max; const unsigned int api_min = priv->cfg->ucode_api_min; char buf[25]; u8 *src; size_t len; u32 api_ver, build; u32 inst_size, data_size, init_size, init_data_size, boot_size; u16 eeprom_ver; /* Ask kernel firmware_class module to get the boot firmware off disk. * request_firmware() is synchronous, file is in memory on return. */ for (index = api_max; index >= api_min; index--) { sprintf(buf, "%s%d%s", name_pre, index, ".ucode"); ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev); if (ret < 0) { IWL_ERR(priv, "%s firmware file req failed: %d\n", buf, ret); if (ret == -ENOENT) continue; else goto error; } else { if (index < api_max) IWL_ERR(priv, "Loaded firmware %s, " "which is deprecated. " "Please use API v%u instead.\n", buf, api_max); IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n", buf, ucode_raw->size); break; } } if (ret < 0) goto error; /* Make sure that we got at least the v1 header! */ if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) { IWL_ERR(priv, "File size way too small!\n"); ret = -EINVAL; goto err_release; } /* Data from ucode file: header followed by uCode images */ ucode = (struct iwl_ucode_header *)ucode_raw->data; priv->ucode_ver = le32_to_cpu(ucode->ver); api_ver = IWL_UCODE_API(priv->ucode_ver); build = priv->cfg->ops->ucode->get_build(ucode, api_ver); inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver); data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver); init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver); init_data_size = priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver); boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver); src = priv->cfg->ops->ucode->get_data(ucode, api_ver); /* 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 */ 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); priv->ucode_ver = 0; ret = -EINVAL; goto err_release; } if (api_ver != api_max) IWL_ERR(priv, "Firmware has old API version. Expected v%u, " "got v%u. New firmware can be obtained " "from http://www.intellinuxwireless.org.\n", api_max, api_ver); IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\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)); snprintf(priv->hw->wiphy->fw_version, sizeof(priv->hw->wiphy->fw_version), "%u.%u.%u.%u", IWL_UCODE_MAJOR(priv->ucode_ver), IWL_UCODE_MINOR(priv->ucode_ver), IWL_UCODE_API(priv->ucode_ver), IWL_UCODE_SERIAL(priv->ucode_ver)); if (build) IWL_DEBUG_INFO(priv, "Build %u\n", build); eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n", (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) ? "OTP" : "EEPROM", eeprom_ver); 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 = %u\n", inst_size); IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n", data_size); IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n", init_size); IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n", init_data_size); IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n", boot_size); /* Verify size of file vs. image size info in file's header */ if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) + inst_size + data_size + init_size + init_data_size + boot_size) { IWL_DEBUG_INFO(priv, "uCode file size %d does not match expected size\n", (int)ucode_raw->size); ret = -EINVAL; goto err_release; } /* Verify that uCode images will fit in card's SRAM */ if (inst_size > priv->hw_params.max_inst_size) { IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n", inst_size); ret = -EINVAL; goto err_release; } if (data_size > priv->hw_params.max_data_size) { IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n", data_size); ret = -EINVAL; goto err_release; } if (init_size > priv->hw_params.max_inst_size) { IWL_INFO(priv, "uCode init instr len %d too large to fit in\n", init_size); ret = -EINVAL; goto err_release; } if (init_data_size > priv->hw_params.max_data_size) { IWL_INFO(priv, "uCode init data len %d too large to fit in\n", init_data_size); ret = -EINVAL; goto err_release; } if (boot_size > priv->hw_params.max_bsm_size) { IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n", boot_size); ret = -EINVAL; goto err_release; } /* 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 */ priv->ucode_code.len = inst_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code); priv->ucode_data.len = data_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data); priv->ucode_data_backup.len = data_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup); if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr || !priv->ucode_data_backup.v_addr) goto err_pci_alloc; /* Initialization instructions and data */ if (init_size && init_data_size) { priv->ucode_init.len = init_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init); priv->ucode_init_data.len = init_data_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data); if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr) goto err_pci_alloc; } /* Bootstrap (instructions only, no data) */ if (boot_size) { priv->ucode_boot.len = boot_size; iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot); if (!priv->ucode_boot.v_addr) goto err_pci_alloc; } /* Copy images into buffers for card's bus-master reads ... */ /* Runtime instructions (first block of data in file) */ len = inst_size; IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len); memcpy(priv->ucode_code.v_addr, src, len); src += len; IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr); /* Runtime data (2nd block) * NOTE: Copy into backup buffer will be done in iwl_up() */ len = data_size; IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len); memcpy(priv->ucode_data.v_addr, src, len); memcpy(priv->ucode_data_backup.v_addr, src, len); src += len; /* Initialization instructions (3rd block) */ if (init_size) { len = init_size; IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n", len); memcpy(priv->ucode_init.v_addr, src, len); src += len; } /* Initialization data (4th block) */ if (init_data_size) { len = init_data_size; IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n", len); memcpy(priv->ucode_init_data.v_addr, src, len); src += len; } /* Bootstrap instructions (5th block) */ len = boot_size; IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len); memcpy(priv->ucode_boot.v_addr, src, len); /* We have our copies now, allow OS release its copies */ release_firmware(ucode_raw); return 0; err_pci_alloc: IWL_ERR(priv, "failed to allocate pci memory\n"); ret = -ENOMEM; iwl_dealloc_ucode_pci(priv); err_release: release_firmware(ucode_raw); error: return ret; } #ifdef CONFIG_IWLWIFI_DEBUG static const char *desc_lookup_text[] = { "OK", "FAIL", "BAD_PARAM", "BAD_CHECKSUM", "NMI_INTERRUPT_WDG", "SYSASSERT", "FATAL_ERROR", "BAD_COMMAND", "HW_ERROR_TUNE_LOCK", "HW_ERROR_TEMPERATURE", "ILLEGAL_CHAN_FREQ", "VCC_NOT_STABLE", "FH_ERROR", "NMI_INTERRUPT_HOST", "NMI_INTERRUPT_ACTION_PT", "NMI_INTERRUPT_UNKNOWN", "UCODE_VERSION_MISMATCH", "HW_ERROR_ABS_LOCK", "HW_ERROR_CAL_LOCK_FAIL", "NMI_INTERRUPT_INST_ACTION_PT", "NMI_INTERRUPT_DATA_ACTION_PT", "NMI_TRM_HW_ER", "NMI_INTERRUPT_TRM", "NMI_INTERRUPT_BREAK_POINT" "DEBUG_0", "DEBUG_1", "DEBUG_2", "DEBUG_3", "UNKNOWN" }; static const char *desc_lookup(int i) { int max = ARRAY_SIZE(desc_lookup_text) - 1; if (i < 0 || i > max) i = max; return desc_lookup_text[i]; } #define ERROR_START_OFFSET (1 * sizeof(u32)) #define ERROR_ELEM_SIZE (7 * sizeof(u32)) void iwl_dump_nic_error_log(struct iwl_priv *priv) { u32 data2, line; u32 desc, time, count, base, data1; u32 blink1, blink2, ilink1, ilink2; if (priv->ucode_type == UCODE_INIT) base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr); else base = le32_to_cpu(priv->card_alive.error_event_table_ptr); if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base); return; } count = iwl_read_targ_mem(priv, base); if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { IWL_ERR(priv, "Start IWL Error Log Dump:\n"); IWL_ERR(priv, "Status: 0x%08lX, count: %d\n", priv->status, count); } desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32)); blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32)); blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32)); ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32)); ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32)); data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32)); data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32)); line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32)); time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32)); trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line, blink1, blink2, ilink1, ilink2); IWL_ERR(priv, "Desc Time " "data1 data2 line\n"); IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n", desc_lookup(desc), desc, time, data1, data2, line); IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n"); IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2, ilink1, ilink2); } #define EVENT_START_OFFSET (4 * sizeof(u32)) /** * iwl_print_event_log - Dump error event log to syslog * */ static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, u32 num_events, u32 mode) { u32 i; u32 base; /* SRAM byte address of event log header */ u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ u32 ptr; /* SRAM byte address of log data */ u32 ev, time, data; /* event log data */ unsigned long reg_flags; if (num_events == 0) return; if (priv->ucode_type == UCODE_INIT) base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr); else base = le32_to_cpu(priv->card_alive.log_event_table_ptr); if (mode == 0) event_size = 2 * sizeof(u32); else event_size = 3 * sizeof(u32); ptr = base + EVENT_START_OFFSET + (start_idx * event_size); /* Make sure device is powered up for SRAM reads */ spin_lock_irqsave(&priv->reg_lock, reg_flags); iwl_grab_nic_access(priv); /* Set starting address; reads will auto-increment */ _iwl_write_direct32(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_read_direct32(priv, HBUS_TARG_MEM_RDAT); time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); if (mode == 0) { /* data, ev */ trace_iwlwifi_dev_ucode_event(priv, 0, time, ev); IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev); } else { data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", time, data, ev); trace_iwlwifi_dev_ucode_event(priv, time, data, ev); } } /* Allow device to power down */ iwl_release_nic_access(priv); spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } /* For sanity check only. Actual size is determined by uCode, typ. 512 */ #define MAX_EVENT_LOG_SIZE (512) void iwl_dump_nic_event_log(struct iwl_priv *priv) { u32 base; /* SRAM byte address of event log header */ u32 capacity; /* event log capacity in # entries */ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ u32 num_wraps; /* # times uCode wrapped to top of log */ u32 next_entry; /* index of next entry to be written by uCode */ u32 size; /* # entries that we'll print */ if (priv->ucode_type == UCODE_INIT) base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr); else base = le32_to_cpu(priv->card_alive.log_event_table_ptr); if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base); return; } /* event log header */ capacity = iwl_read_targ_mem(priv, base); mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); if (capacity > MAX_EVENT_LOG_SIZE) { IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n", capacity, MAX_EVENT_LOG_SIZE); capacity = MAX_EVENT_LOG_SIZE; } if (next_entry > MAX_EVENT_LOG_SIZE) { IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", next_entry, MAX_EVENT_LOG_SIZE); next_entry = MAX_EVENT_LOG_SIZE; } size = num_wraps ? capacity : next_entry; /* bail out if nothing in log */ if (size == 0) { IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n"); return; } IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n", size, num_wraps); /* if uCode has wrapped back to top of log, start at the oldest entry, * i.e the next one that uCode would fill. */ if (num_wraps) iwl_print_event_log(priv, next_entry, capacity - next_entry, mode); /* (then/else) start at top of log */ iwl_print_event_log(priv, 0, next_entry, mode); } #endif /** * iwl_alive_start - called after REPLY_ALIVE notification received * from protocol/runtime uCode (initialization uCode's * Alive gets handled by iwl_init_alive_start()). */ static void iwl_alive_start(struct iwl_priv *priv) { int ret = 0; IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); if (priv->card_alive.is_valid != UCODE_VALID_OK) { /* We had an error bringing up the hardware, so take it * all the way back down so we can try again */ IWL_DEBUG_INFO(priv, "Alive failed.\n"); goto restart; } /* Initialize uCode has loaded Runtime uCode ... verify inst image. * This is a paranoid check, because we would not have gotten the * "runtime" alive if code weren't properly loaded. */ if (iwl_verify_ucode(priv)) { /* Runtime instruction load was bad; * take it all the way back down so we can try again */ IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n"); goto restart; } iwl_clear_stations_table(priv); ret = priv->cfg->ops->lib->alive_notify(priv); if (ret) { IWL_WARN(priv, "Could not complete ALIVE transition [ntf]: %d\n", ret); goto restart; } /* After the ALIVE response, we can send host commands to the uCode */ set_bit(STATUS_ALIVE, &priv->status); if (iwl_is_rfkill(priv)) return; ieee80211_wake_queues(priv->hw); priv->active_rate = priv->rates_mask; priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; /* Configure Tx antenna selection based on H/W config */ if (priv->cfg->ops->hcmd->set_tx_ant) priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant); if (iwl_is_associated(priv)) { struct iwl_rxon_cmd *active_rxon = (struct iwl_rxon_cmd *)&priv->active_rxon; /* apply any changes in staging */ priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; } else { /* Initialize our rx_config data */ iwl_connection_init_rx_config(priv, priv->iw_mode); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); } /* Configure Bluetooth device coexistence support */ iwl_send_bt_config(priv); iwl_reset_run_time_calib(priv); /* Configure the adapter for unassociated operation */ iwlcore_commit_rxon(priv); /* At this point, the NIC is initialized and operational */ iwl_rf_kill_ct_config(priv); iwl_leds_init(priv); IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); set_bit(STATUS_READY, &priv->status); wake_up_interruptible(&priv->wait_command_queue); iwl_power_update_mode(priv, true); /* reassociate for ADHOC mode */ if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) { struct sk_buff *beacon = ieee80211_beacon_get(priv->hw, priv->vif); if (beacon) iwl_mac_beacon_update(priv->hw, beacon); } if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status)) iwl_set_mode(priv, priv->iw_mode); return; restart: queue_work(priv->workqueue, &priv->restart); } static void iwl_cancel_deferred_work(struct iwl_priv *priv); static void __iwl_down(struct iwl_priv *priv) { unsigned long flags; int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status); IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); if (!exit_pending) set_bit(STATUS_EXIT_PENDING, &priv->status); iwl_clear_stations_table(priv); /* Unblock any waiting calls */ wake_up_interruptible_all(&priv->wait_command_queue); /* Wipe out the EXIT_PENDING status bit if we are not actually * exiting the module */ if (!exit_pending) clear_bit(STATUS_EXIT_PENDING, &priv->status); /* stop and reset the on-board processor */ iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); /* tell the device to stop sending interrupts */ spin_lock_irqsave(&priv->lock, flags); iwl_disable_interrupts(priv); spin_unlock_irqrestore(&priv->lock, flags); iwl_synchronize_irq(priv); if (priv->mac80211_registered) ieee80211_stop_queues(priv->hw); /* If we have not previously called iwl_init() then * clear all bits but the RF Kill bit and return */ if (!iwl_is_init(priv)) { priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << STATUS_RF_KILL_HW | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << STATUS_GEO_CONFIGURED | test_bit(STATUS_EXIT_PENDING, &priv->status) << STATUS_EXIT_PENDING; goto exit; } /* ...otherwise clear out all the status bits but the RF Kill * bit and continue taking the NIC down. */ priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << STATUS_RF_KILL_HW | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << STATUS_GEO_CONFIGURED | test_bit(STATUS_FW_ERROR, &priv->status) << STATUS_FW_ERROR | test_bit(STATUS_EXIT_PENDING, &priv->status) << STATUS_EXIT_PENDING; /* device going down, Stop using ICT table */ iwl_disable_ict(priv); iwl_txq_ctx_stop(priv); iwl_rxq_stop(priv); /* Power-down device's busmaster DMA clocks */ iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); udelay(5); /* Make sure (redundant) we've released our request to stay awake */ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); /* Stop the device, and put it in low power state */ priv->cfg->ops->lib->apm_ops.stop(priv); exit: memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp)); if (priv->ibss_beacon) dev_kfree_skb(priv->ibss_beacon); priv->ibss_beacon = NULL; /* clear out any free frames */ iwl_clear_free_frames(priv); } static void iwl_down(struct iwl_priv *priv) { mutex_lock(&priv->mutex); __iwl_down(priv); mutex_unlock(&priv->mutex); iwl_cancel_deferred_work(priv); } #define HW_READY_TIMEOUT (50) static int iwl_set_hw_ready(struct iwl_priv *priv) { int ret = 0; iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY); /* See if we got it */ ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, CSR_HW_IF_CONFIG_REG_BIT_NIC_READY, HW_READY_TIMEOUT); if (ret != -ETIMEDOUT) priv->hw_ready = true; else priv->hw_ready = false; IWL_DEBUG_INFO(priv, "hardware %s\n", (priv->hw_ready == 1) ? "ready" : "not ready"); return ret; } static int iwl_prepare_card_hw(struct iwl_priv *priv) { int ret = 0; IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n"); ret = iwl_set_hw_ready(priv); if (priv->hw_ready) return ret; /* If HW is not ready, prepare the conditions to check again */ iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, CSR_HW_IF_CONFIG_REG_PREPARE); ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000); /* HW should be ready by now, check again. */ if (ret != -ETIMEDOUT) iwl_set_hw_ready(priv); return ret; } #define MAX_HW_RESTARTS 5 static int __iwl_up(struct iwl_priv *priv) { int i; int ret; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); return -EIO; } if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { IWL_ERR(priv, "ucode not available for device bringup\n"); return -EIO; } iwl_prepare_card_hw(priv); if (!priv->hw_ready) { IWL_WARN(priv, "Exit HW not ready\n"); return -EIO; } /* If platform's RF_KILL switch is NOT set to KILL */ if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) clear_bit(STATUS_RF_KILL_HW, &priv->status); else set_bit(STATUS_RF_KILL_HW, &priv->status); if (iwl_is_rfkill(priv)) { wiphy_rfkill_set_hw_state(priv->hw->wiphy, true); iwl_enable_interrupts(priv); IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n"); return 0; } iwl_write32(priv, CSR_INT, 0xFFFFFFFF); ret = iwl_hw_nic_init(priv); if (ret) { IWL_ERR(priv, "Unable to init nic\n"); return ret; } /* make sure rfkill handshake bits are cleared */ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); /* clear (again), then enable host interrupts */ iwl_write32(priv, CSR_INT, 0xFFFFFFFF); iwl_enable_interrupts(priv); /* really make sure rfkill handshake bits are cleared */ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); /* Copy original ucode data image from disk into backup cache. * This will be used to initialize the on-board processor's * data SRAM for a clean start when the runtime program first loads. */ memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, priv->ucode_data.len); for (i = 0; i < MAX_HW_RESTARTS; i++) { iwl_clear_stations_table(priv); /* load bootstrap state machine, * load bootstrap program into processor's memory, * prepare to load the "initialize" uCode */ ret = priv->cfg->ops->lib->load_ucode(priv); if (ret) { IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n", ret); continue; } /* start card; "initialize" will load runtime ucode */ iwl_nic_start(priv); IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n"); return 0; } set_bit(STATUS_EXIT_PENDING, &priv->status); __iwl_down(priv); clear_bit(STATUS_EXIT_PENDING, &priv->status); /* tried to restart and config the device for as long as our * patience could withstand */ IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i); return -EIO; } /***************************************************************************** * * Workqueue callbacks * *****************************************************************************/ static void iwl_bg_init_alive_start(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, init_alive_start.work); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); priv->cfg->ops->lib->init_alive_start(priv); mutex_unlock(&priv->mutex); } static void iwl_bg_alive_start(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, alive_start.work); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* enable dram interrupt */ iwl_reset_ict(priv); mutex_lock(&priv->mutex); iwl_alive_start(priv); mutex_unlock(&priv->mutex); } static void iwl_bg_run_time_calib_work(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, run_time_calib_work); mutex_lock(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status) || test_bit(STATUS_SCANNING, &priv->status)) { mutex_unlock(&priv->mutex); return; } if (priv->start_calib) { iwl_chain_noise_calibration(priv, &priv->statistics); iwl_sensitivity_calibration(priv, &priv->statistics); } mutex_unlock(&priv->mutex); return; } static void iwl_bg_up(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, up); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); __iwl_up(priv); mutex_unlock(&priv->mutex); } static void iwl_bg_restart(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { mutex_lock(&priv->mutex); priv->vif = NULL; priv->is_open = 0; mutex_unlock(&priv->mutex); iwl_down(priv); ieee80211_restart_hw(priv->hw); } else { iwl_down(priv); queue_work(priv->workqueue, &priv->up); } } static void iwl_bg_rx_replenish(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, rx_replenish); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; mutex_lock(&priv->mutex); iwl_rx_replenish(priv); mutex_unlock(&priv->mutex); } #define IWL_DELAY_NEXT_SCAN (HZ*2) void iwl_post_associate(struct iwl_priv *priv) { struct ieee80211_conf *conf = NULL; int ret = 0; unsigned long flags; if (priv->iw_mode == NL80211_IFTYPE_AP) { IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__); return; } IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n", priv->assoc_id, priv->active_rxon.bssid_addr); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (!priv->vif || !priv->is_open) return; iwl_scan_cancel_timeout(priv, 200); conf = ieee80211_get_hw_conf(priv->hw); priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; iwlcore_commit_rxon(priv); iwl_setup_rxon_timing(priv); ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, sizeof(priv->rxon_timing), &priv->rxon_timing); if (ret) IWL_WARN(priv, "REPLY_RXON_TIMING failed - " "Attempting to continue.\n"); priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; iwl_set_rxon_ht(priv, &priv->current_ht_config); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n", priv->assoc_id, priv->beacon_int); if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; if (priv->iw_mode == NL80211_IFTYPE_ADHOC) priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; } iwlcore_commit_rxon(priv); switch (priv->iw_mode) { case NL80211_IFTYPE_STATION: break; case NL80211_IFTYPE_ADHOC: /* assume default assoc id */ priv->assoc_id = 1; iwl_rxon_add_station(priv, priv->bssid, 0); iwl_send_beacon_cmd(priv); break; default: IWL_ERR(priv, "%s Should not be called in %d mode\n", __func__, priv->iw_mode); break; } if (priv->iw_mode == NL80211_IFTYPE_ADHOC) priv->assoc_station_added = 1; spin_lock_irqsave(&priv->lock, flags); iwl_activate_qos(priv, 0); spin_unlock_irqrestore(&priv->lock, flags); /* the chain noise calibration will enabled PM upon completion * If chain noise has already been run, then we need to enable * power management here */ if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) iwl_power_update_mode(priv, false); /* Enable Rx differential gain and sensitivity calibrations */ iwl_chain_noise_reset(priv); priv->start_calib = 1; } /***************************************************************************** * * mac80211 entry point functions * *****************************************************************************/ #define UCODE_READY_TIMEOUT (4 * HZ) /* * Not a mac80211 entry point function, but it fits in with all the * other mac80211 functions grouped here. */ static int iwl_setup_mac(struct iwl_priv *priv) { int ret; struct ieee80211_hw *hw = priv->hw; hw->rate_control_algorithm = "iwl-agn-rs"; /* Tell mac80211 our characteristics */ hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM | IEEE80211_HW_AMPDU_AGGREGATION | IEEE80211_HW_SPECTRUM_MGMT; if (!priv->cfg->broken_powersave) hw->flags |= IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS; hw->sta_data_size = sizeof(struct iwl_station_priv); hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); hw->wiphy->custom_regulatory = true; /* Firmware does not support this */ hw->wiphy->disable_beacon_hints = true; /* * For now, disable PS by default because it affects * RX performance significantly. */ hw->wiphy->ps_default = false; 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 = IWL_MAX_PROBE_REQUEST - 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]; ret = ieee80211_register_hw(priv->hw); if (ret) { IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); return ret; } priv->mac80211_registered = 1; return 0; } static int iwl_mac_start(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; int ret; IWL_DEBUG_MAC80211(priv, "enter\n"); /* we should be verifying the device is ready to be opened */ mutex_lock(&priv->mutex); /* fetch ucode file from disk, alloc and copy to bus-master buffers ... * ucode filename and max sizes are card-specific. */ if (!priv->ucode_code.len) { ret = iwl_read_ucode(priv); if (ret) { IWL_ERR(priv, "Could not read microcode: %d\n", ret); mutex_unlock(&priv->mutex); return ret; } } ret = __iwl_up(priv); mutex_unlock(&priv->mutex); if (ret) return ret; if (iwl_is_rfkill(priv)) goto out; IWL_DEBUG_INFO(priv, "Start UP work done.\n"); /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from * mac80211 will not be run successfully. */ ret = wait_event_interruptible_timeout(priv->wait_command_queue, test_bit(STATUS_READY, &priv->status), UCODE_READY_TIMEOUT); if (!ret) { if (!test_bit(STATUS_READY, &priv->status)) { IWL_ERR(priv, "START_ALIVE timeout after %dms.\n", jiffies_to_msecs(UCODE_READY_TIMEOUT)); return -ETIMEDOUT; } } iwl_led_start(priv); out: priv->is_open = 1; IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } static void iwl_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; if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) { /* stop mac, cancel any scan request and clear * RXON_FILTER_ASSOC_MSK BIT */ mutex_lock(&priv->mutex); iwl_scan_cancel_timeout(priv, 100); mutex_unlock(&priv->mutex); } iwl_down(priv); flush_workqueue(priv->workqueue); /* enable interrupts again in order to receive rfkill changes */ iwl_write32(priv, CSR_INT, 0xFFFFFFFF); iwl_enable_interrupts(priv); IWL_DEBUG_MAC80211(priv, "leave\n"); } static int iwl_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 (iwl_tx_skb(priv, skb)) dev_kfree_skb_any(skb); IWL_DEBUG_MACDUMP(priv, "leave\n"); return NETDEV_TX_OK; } void iwl_config_ap(struct iwl_priv *priv) { int ret = 0; unsigned long flags; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* The following should be done only at AP bring up */ if (!iwl_is_associated(priv)) { /* RXON - unassoc (to set timing command) */ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; iwlcore_commit_rxon(priv); /* RXON Timing */ iwl_setup_rxon_timing(priv); ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, sizeof(priv->rxon_timing), &priv->rxon_timing); if (ret) IWL_WARN(priv, "REPLY_RXON_TIMING failed - " "Attempting to continue.\n"); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); /* FIXME: what should be the assoc_id for AP? */ priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; if (priv->iw_mode == NL80211_IFTYPE_ADHOC) priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; } /* restore RXON assoc */ priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; iwlcore_commit_rxon(priv); spin_lock_irqsave(&priv->lock, flags); iwl_activate_qos(priv, 1); spin_unlock_irqrestore(&priv->lock, flags); iwl_add_bcast_station(priv); } iwl_send_beacon_cmd(priv); /* FIXME - we need to add code here to detect a totally new * configuration, reset the AP, unassoc, rxon timing, assoc, * clear sta table, add BCAST sta... */ } static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw, struct ieee80211_key_conf *keyconf, const u8 *addr, u32 iv32, u16 *phase1key) { struct iwl_priv *priv = hw->priv; IWL_DEBUG_MAC80211(priv, "enter\n"); iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key); IWL_DEBUG_MAC80211(priv, "leave\n"); } static int iwl_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; const u8 *addr; int ret; u8 sta_id; bool is_default_wep_key = false; IWL_DEBUG_MAC80211(priv, "enter\n"); if (priv->cfg->mod_params->sw_crypto) { IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); return -EOPNOTSUPP; } addr = sta ? sta->addr : iwl_bcast_addr; sta_id = iwl_find_station(priv, addr); if (sta_id == IWL_INVALID_STATION) { IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n", addr); return -EINVAL; } mutex_lock(&priv->mutex); iwl_scan_cancel_timeout(priv, 100); mutex_unlock(&priv->mutex); /* 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->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id && priv->iw_mode != NL80211_IFTYPE_AP) { if (cmd == SET_KEY) is_default_wep_key = !priv->key_mapping_key; else is_default_wep_key = (key->hw_key_idx == HW_KEY_DEFAULT); } switch (cmd) { case SET_KEY: if (is_default_wep_key) ret = iwl_set_default_wep_key(priv, key); else ret = iwl_set_dynamic_key(priv, key, sta_id); IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); break; case DISABLE_KEY: if (is_default_wep_key) ret = iwl_remove_default_wep_key(priv, key); else ret = iwl_remove_dynamic_key(priv, key, sta_id); IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); break; default: ret = -EINVAL; } IWL_DEBUG_MAC80211(priv, "leave\n"); return ret; } static int iwl_mac_ampdu_action(struct ieee80211_hw *hw, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn) { struct iwl_priv *priv = hw->priv; int ret; IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", sta->addr, tid); if (!(priv->cfg->sku & IWL_SKU_N)) return -EACCES; switch (action) { case IEEE80211_AMPDU_RX_START: IWL_DEBUG_HT(priv, "start Rx\n"); return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn); case IEEE80211_AMPDU_RX_STOP: IWL_DEBUG_HT(priv, "stop Rx\n"); ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return 0; else return ret; case IEEE80211_AMPDU_TX_START: IWL_DEBUG_HT(priv, "start Tx\n"); return iwl_tx_agg_start(priv, sta->addr, tid, ssn); case IEEE80211_AMPDU_TX_STOP: IWL_DEBUG_HT(priv, "stop Tx\n"); ret = iwl_tx_agg_stop(priv, sta->addr, tid); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return 0; else return ret; default: IWL_DEBUG_HT(priv, "unknown\n"); return -EINVAL; break; } return 0; } static int iwl_mac_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { struct iwl_priv *priv = hw->priv; priv = hw->priv; IWL_DEBUG_MAC80211(priv, "enter\n"); IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } /***************************************************************************** * * sysfs attributes * *****************************************************************************/ #ifdef CONFIG_IWLWIFI_DEBUG /* * The following adds a new attribute to the sysfs representation * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/) * used for controlling the debug level. * * See the level definitions in iwl for details. * * The debug_level being managed using sysfs below is a per device debug * level that is used instead of the global debug level if it (the per * device debug level) is set. */ static ssize_t show_debug_level(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv)); } static ssize_t store_debug_level(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; int ret; ret = strict_strtoul(buf, 0, &val); if (ret) IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf); else { priv->debug_level = val; if (iwl_alloc_traffic_mem(priv)) IWL_ERR(priv, "Not enough memory to generate traffic log\n"); } return strnlen(buf, count); } static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, show_debug_level, store_debug_level); #endif /* CONFIG_IWLWIFI_DEBUG */ static ssize_t show_temperature(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); if (!iwl_is_alive(priv)) return -EAGAIN; return sprintf(buf, "%d\n", priv->temperature); } static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); static ssize_t show_tx_power(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); if (!iwl_is_ready_rf(priv)) return sprintf(buf, "off\n"); else return sprintf(buf, "%d\n", priv->tx_power_user_lmt); } static ssize_t store_tx_power(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; int ret; ret = strict_strtoul(buf, 10, &val); if (ret) IWL_INFO(priv, "%s is not in decimal form.\n", buf); else { ret = iwl_set_tx_power(priv, val, false); if (ret) IWL_ERR(priv, "failed setting tx power (0x%d).\n", ret); else ret = count; } return ret; } static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); static ssize_t show_flags(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); return sprintf(buf, "0x%04X\n", priv->active_rxon.flags); } static ssize_t store_flags(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; u32 flags; int ret = strict_strtoul(buf, 0, &val); if (ret) return ret; flags = (u32)val; mutex_lock(&priv->mutex); if (le32_to_cpu(priv->staging_rxon.flags) != flags) { /* Cancel any currently running scans... */ if (iwl_scan_cancel_timeout(priv, 100)) IWL_WARN(priv, "Could not cancel scan.\n"); else { IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags); priv->staging_rxon.flags = cpu_to_le32(flags); iwlcore_commit_rxon(priv); } } mutex_unlock(&priv->mutex); return count; } static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags); static ssize_t show_filter_flags(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); return sprintf(buf, "0x%04X\n", le32_to_cpu(priv->active_rxon.filter_flags)); } static ssize_t store_filter_flags(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { struct iwl_priv *priv = dev_get_drvdata(d); unsigned long val; u32 filter_flags; int ret = strict_strtoul(buf, 0, &val); if (ret) return ret; filter_flags = (u32)val; mutex_lock(&priv->mutex); if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) { /* Cancel any currently running scans... */ if (iwl_scan_cancel_timeout(priv, 100)) IWL_WARN(priv, "Could not cancel scan.\n"); else { IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = " "0x%04X\n", filter_flags); priv->staging_rxon.filter_flags = cpu_to_le32(filter_flags); iwlcore_commit_rxon(priv); } } mutex_unlock(&priv->mutex); return count; } static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, store_filter_flags); static ssize_t show_statistics(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); u32 size = sizeof(struct iwl_notif_statistics); u32 len = 0, ofs = 0; u8 *data = (u8 *)&priv->statistics; int rc = 0; if (!iwl_is_alive(priv)) return -EAGAIN; mutex_lock(&priv->mutex); rc = iwl_send_statistics_request(priv, 0); mutex_unlock(&priv->mutex); if (rc) { len = sprintf(buf, "Error sending statistics request: 0x%08X\n", rc); return len; } while (size && (PAGE_SIZE - len)) { hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, PAGE_SIZE - len, 1); len = strlen(buf); if (PAGE_SIZE - len) buf[len++] = '\n'; ofs += 16; size -= min(size, 16U); } return len; } static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); static ssize_t show_rts_ht_protection(struct device *d, struct device_attribute *attr, char *buf) { struct iwl_priv *priv = dev_get_drvdata(d); return sprintf(buf, "%s\n", priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self"); } static ssize_t store_rts_ht_protection(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, "Input is not in decimal form.\n"); else { if (!iwl_is_associated(priv)) priv->cfg->use_rts_for_ht = val ? true : false; else IWL_ERR(priv, "Sta associated with AP - " "Change protection mechanism is not allowed\n"); ret = count; } return ret; } static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO, show_rts_ht_protection, store_rts_ht_protection); /***************************************************************************** * * driver setup and teardown * *****************************************************************************/ static void iwl_setup_deferred_work(struct iwl_priv *priv) { priv->workqueue = create_singlethread_workqueue(DRV_NAME); init_waitqueue_head(&priv->wait_command_queue); INIT_WORK(&priv->up, iwl_bg_up); INIT_WORK(&priv->restart, iwl_bg_restart); INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish); INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start); INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start); iwl_setup_scan_deferred_work(priv); if (priv->cfg->ops->lib->setup_deferred_work) priv->cfg->ops->lib->setup_deferred_work(priv); init_timer(&priv->statistics_periodic); priv->statistics_periodic.data = (unsigned long)priv; priv->statistics_periodic.function = iwl_bg_statistics_periodic; if (!priv->cfg->use_isr_legacy) tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) iwl_irq_tasklet, (unsigned long)priv); else tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) iwl_irq_tasklet_legacy, (unsigned long)priv); } static void iwl_cancel_deferred_work(struct iwl_priv *priv) { if (priv->cfg->ops->lib->cancel_deferred_work) priv->cfg->ops->lib->cancel_deferred_work(priv); cancel_delayed_work_sync(&priv->init_alive_start); cancel_delayed_work(&priv->scan_check); cancel_delayed_work(&priv->alive_start); cancel_work_sync(&priv->beacon_update); del_timer_sync(&priv->statistics_periodic); } 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; priv->ibss_beacon = NULL; spin_lock_init(&priv->lock); spin_lock_init(&priv->sta_lock); spin_lock_init(&priv->hcmd_lock); INIT_LIST_HEAD(&priv->free_frames); mutex_init(&priv->mutex); /* Clear the driver's (not device's) station table */ iwl_clear_stations_table(priv); priv->ieee_channels = NULL; priv->ieee_rates = NULL; priv->band = IEEE80211_BAND_2GHZ; priv->iw_mode = NL80211_IFTYPE_STATION; if (priv->cfg->support_sm_ps) priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DYNAMIC; else priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED; /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); iwl_init_scan_params(priv); iwl_reset_qos(priv); priv->qos_data.qos_active = 0; priv->qos_data.qos_cap.val = 0; priv->rates_mask = IWL_RATES_MASK; /* Set the tx_power_user_lmt to the lowest power level * this value will get overwritten by channel max power avg * from eeprom */ priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN; ret = iwl_init_channel_map(priv); if (ret) { IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); goto err; } ret = iwlcore_init_geos(priv); if (ret) { IWL_ERR(priv, "initializing geos failed: %d\n", ret); goto err_free_channel_map; } iwl_init_hw_rates(priv, priv->ieee_rates); return 0; err_free_channel_map: iwl_free_channel_map(priv); err: return ret; } static void iwl_uninit_drv(struct iwl_priv *priv) { iwl_calib_free_results(priv); iwlcore_free_geos(priv); iwl_free_channel_map(priv); kfree(priv->scan); } static struct attribute *iwl_sysfs_entries[] = { &dev_attr_flags.attr, &dev_attr_filter_flags.attr, &dev_attr_statistics.attr, &dev_attr_temperature.attr, &dev_attr_tx_power.attr, &dev_attr_rts_ht_protection.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, }; static struct ieee80211_ops iwl_hw_ops = { .tx = iwl_mac_tx, .start = iwl_mac_start, .stop = iwl_mac_stop, .add_interface = iwl_mac_add_interface, .remove_interface = iwl_mac_remove_interface, .config = iwl_mac_config, .configure_filter = iwl_configure_filter, .set_key = iwl_mac_set_key, .update_tkip_key = iwl_mac_update_tkip_key, .get_stats = iwl_mac_get_stats, .get_tx_stats = iwl_mac_get_tx_stats, .conf_tx = iwl_mac_conf_tx, .reset_tsf = iwl_mac_reset_tsf, .bss_info_changed = iwl_bss_info_changed, .ampdu_action = iwl_mac_ampdu_action, .hw_scan = iwl_mac_hw_scan }; static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int err = 0; struct iwl_priv *priv; struct ieee80211_hw *hw; struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); unsigned long flags; u16 pci_cmd; /************************ * 1. Allocating HW data ************************/ /* Disabling hardware scan means that mac80211 will perform scans * "the hard way", rather than using device's scan. */ if (cfg->mod_params->disable_hw_scan) { if (iwl_debug_level & IWL_DL_INFO) dev_printk(KERN_DEBUG, &(pdev->dev), "Disabling hw_scan\n"); iwl_hw_ops.hw_scan = NULL; } hw = iwl_alloc_all(cfg, &iwl_hw_ops); if (!hw) { err = -ENOMEM; goto out; } priv = hw->priv; /* At this point both hw and priv are allocated. */ SET_IEEE80211_DEV(hw, &pdev->dev); IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); priv->cfg = cfg; priv->pci_dev = pdev;


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