| /****************************************************************************** |
| * |
| * 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; |
| /* allow CTS-to-self if possible. this is relevant only for |
| * 5000, but will not damage 4965 */ |
| priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN; |
| |
| ret = iwl_check_rxon_cmd(priv); |
| if (ret) { |
| IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); |
| return -EINVAL; |
| } |
| |
| /* 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)); |
| 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->hw_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)); |
| } |
| |
| priv->cfg->ops->smgmt->clear_station_table(priv); |
| |
| if (!priv->error_recovering) |
| priv->start_calib = 0; |
| |
| /* Add the broadcast address so we can send broadcast frames */ |
| if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) == |
| IWL_INVALID_STATION) { |
| IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n"); |
| return -EIO; |
| } |
| |
| /* 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"); |
| } |
| |
| /* 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_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->cmd[index]->meta, mapping), |
| pci_unmap_len(&txq->cmd[index]->meta, 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 ret; |
| unsigned long flags; |
| int txq_id = txq->q.id; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| ret = iwl_grab_nic_access(priv); |
| if (ret) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return ret; |
| } |
| |
| /* Circular buffer (TFD queue in DRAM) physical base address */ |
| iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id), |
| txq->q.dma_addr >> 8); |
| |
| iwl_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * Misc. internal state and helper functions |
| * |
| ******************************************************************************/ |
| |
| #define MAX_UCODE_BEACON_INTERVAL 4096 |
| |
| static u16 iwl_adjust_beacon_interval(u16 beacon_val) |
| { |
| u16 new_val = 0; |
| u16 beacon_factor = 0; |
| |
| beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL) |
| / MAX_UCODE_BEACON_INTERVAL; |
| new_val = beacon_val / beacon_factor; |
| |
| if (!new_val) |
| new_val = MAX_UCODE_BEACON_INTERVAL; |
| |
| return new_val; |
| } |
| |
| static void iwl_setup_rxon_timing(struct iwl_priv *priv) |
| { |
| u64 tsf; |
| s32 interval_tm, rem; |
| unsigned long flags; |
| struct ieee80211_conf *conf = NULL; |
| u16 beacon_int = 0; |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp); |
| priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval); |
| |
| if (priv->iw_mode == NL80211_IFTYPE_STATION) { |
| beacon_int = iwl_adjust_beacon_interval(priv->beacon_int); |
| priv->rxon_timing.atim_window = 0; |
| } else { |
| beacon_int = iwl_adjust_beacon_interval(conf->beacon_int); |
| |
| /* TODO: we need to get atim_window from upper stack |
| * for now we set to 0 */ |
| priv->rxon_timing.atim_window = 0; |
| } |
| |
| priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int); |
| |
| tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ |
| interval_tm = beacon_int * 1024; |
| rem = do_div(tsf, interval_tm); |
| priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n", |
| le16_to_cpu(priv->rxon_timing.beacon_interval), |
| le32_to_cpu(priv->rxon_timing.beacon_init_val), |
| le16_to_cpu(priv->rxon_timing.atim_window)); |
| } |
| |
| /****************************************************************************** |
| * |
| * 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 = (struct iwl_rx_packet *)rxb->skb->data; |
| 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 = (struct iwl_rx_packet *)rxb->skb->data; |
| 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 = (struct iwl_rx_packet *)rxb->skb->data; |
| 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); |
| |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_direct32( |
| priv, HBUS_TARG_MBX_C, |
| HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); |
| |
| iwl_release_nic_access(priv); |
| } |
| |
| if (!(flags & RXON_CARD_DISABLED)) { |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_direct32( |
| priv, HBUS_TARG_MBX_C, |
| HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); |
| |
| iwl_release_nic_access(priv); |
| } |
| } |
| |
| if (flags & RF_CARD_DISABLED) { |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); |
| iwl_read32(priv, CSR_UCODE_DRV_GP1); |
| if (!iwl_grab_nic_access(priv)) |
| iwl_release_nic_access(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 & SW_CARD_DISABLED) |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| else |
| clear_bit(STATUS_RF_KILL_SW, &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)) || |
| (test_bit(STATUS_RF_KILL_SW, &status) != |
| test_bit(STATUS_RF_KILL_SW, &priv->status))) |
| queue_work(priv->workqueue, &priv->rf_kill); |
| else |
| wake_up_interruptible(&priv->wait_command_queue); |
| } |
| |
| int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src) |
| { |
| int ret; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| ret = iwl_grab_nic_access(priv); |
| if (ret) |
| goto err; |
| |
| 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); |
| } |
| |
| iwl_release_nic_access(priv); |
| err: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return ret; |
| } |
| |
| /** |
| * 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; |
| |
| /* 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); |
| |
| if (iwl_rx_queue_space(rxq) > (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; |
| |
| dma_sync_single_range_for_cpu( |
| &priv->pci_dev->dev, rxb->real_dma_addr, |
| rxb->aligned_dma_addr - rxb->real_dma_addr, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| |
| /* 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->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); |
| } |
| |
| if (reclaim) { |
| /* Invoke any callbacks, transfer the skb to caller, and |
| * fire off the (possibly) blocking iwl_send_cmd() |
| * as we reclaim the driver command queue */ |
| if (rxb && rxb->skb) |
| iwl_tx_cmd_complete(priv, rxb); |
| else |
| IWL_WARN(priv, "Claim null rxb?\n"); |
| } |
| |
| /* For now we just don't re-use anything. We can tweak this |
| * later to try and re-use notification packets and SKBs that |
| * fail to Rx correctly */ |
| if (rxb->skb != NULL) { |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(rxb->skb); |
| rxb->skb = NULL; |
| } |
| |
| pci_unmap_single(priv->pci_dev, rxb->real_dma_addr, |
| priv->hw_params.rx_buf_size + 256, |
| PCI_DMA_FROMDEVICE); |
| spin_lock_irqsave(&rxq->lock, flags); |
| list_add_tail(&rxb->list, &priv->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) { |
| priv->rxq.read = i; |
| iwl_rx_queue_restock(priv); |
| count = 0; |
| } |
| } |
| } |
| |
| /* Backtrack one entry */ |
| priv->rxq.read = i; |
| 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_error_recovery(struct iwl_priv *priv) |
| { |
| unsigned long flags; |
| |
| memcpy(&priv->staging_rxon, &priv->recovery_rxon, |
| sizeof(priv->staging_rxon)); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwlcore_commit_rxon(priv); |
| |
| iwl_rxon_add_station(priv, priv->bssid, 1); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); |
| priv->error_recovering = 0; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static void iwl_irq_tasklet(struct iwl_priv *priv) |
| { |
| u32 inta, handled = 0; |
| u32 inta_fh; |
| unsigned long flags; |
| #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 (priv->debug_level & 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 |
| |
| /* 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, "Microcode HW error detected. Restarting.\n"); |
| |
| /* Tell the device to stop sending interrupts */ |
| iwl_disable_interrupts(priv); |
| |
| iwl_irq_handle_error(priv); |
| |
| handled |= CSR_INT_BIT_HW_ERR; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (priv->debug_level & (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"); |
| |
| /* Alive notification via Rx interrupt will do the real work */ |
| if (inta & CSR_INT_BIT_ALIVE) |
| IWL_DEBUG_ISR(priv, "Alive interrupt\n"); |
| } |
| #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_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n", |
| hw_rf_kill ? "disable radio" : "enable radio"); |
| |
| /* 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); |
| queue_work(priv->workqueue, &priv->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"); |
| 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); |
| 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); |
| iwl_txq_update_write_ptr(priv, &priv->txq[0]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[1]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[2]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[3]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[4]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[5]); |
| |
| 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); |
| handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
| } |
| |
| if (inta & CSR_INT_BIT_FH_TX) { |
| IWL_DEBUG_ISR(priv, "Tx interrupt\n"); |
| handled |= CSR_INT_BIT_FH_TX; |
| /* FH finished to write, send event */ |
| 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); |
| |
| if (inta & ~CSR_INI_SET_MASK) { |
| IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", |
| inta & ~CSR_INI_SET_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 (priv->debug_level & (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 |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| /****************************************************************************** |
| * |
| * 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 *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, inst_size, data_size, init_size, init_data_size, boot_size; |
| |
| /* 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 our header! */ |
| if (ucode_raw->size < sizeof(*ucode)) { |
| IWL_ERR(priv, "File size way too small!\n"); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Data from ucode file: header followed by uCode images */ |
| ucode = (void *)ucode_raw->data; |
| |
| priv->ucode_ver = le32_to_cpu(ucode->ver); |
| api_ver = IWL_UCODE_API(priv->ucode_ver); |
| inst_size = le32_to_cpu(ucode->inst_size); |
| data_size = le32_to_cpu(ucode->data_size); |
| init_size = le32_to_cpu(ucode->init_size); |
| init_data_size = le32_to_cpu(ucode->init_data_size); |
| boot_size = le32_to_cpu(ucode->boot_size); |
| |
| /* 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)); |
| |
| 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 < sizeof(*ucode) + |
| inst_size + data_size + init_size + |
| init_data_size + boot_size) { |
| |
| IWL_DEBUG_INFO(priv, "uCode file size %d too small\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) */ |
| src = &ucode->data[0]; |
| len = priv->ucode_code.len; |
| IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len); |
| memcpy(priv->ucode_code.v_addr, 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() */ |
| src = &ucode->data[inst_size]; |
| len = priv->ucode_data.len; |
| 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); |
| |
| /* Initialization instructions (3rd block) */ |
| if (init_size) { |
| src = &ucode->data[inst_size + data_size]; |
| len = priv->ucode_init.len; |
| IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n", |
| len); |
| memcpy(priv->ucode_init.v_addr, src, len); |
| } |
| |
| /* Initialization data (4th block) */ |
| if (init_data_size) { |
| src = &ucode->data[inst_size + data_size + init_size]; |
| len = priv->ucode_init_data.len; |
| IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n", |
| len); |
| memcpy(priv->ucode_init_data.v_addr, src, len); |
| } |
| |
| /* Bootstrap instructions (5th block) */ |
| src = &ucode->data[inst_size + data_size + init_size + init_data_size]; |
| len = priv->ucode_boot.len; |
| 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; |
| } |
| |
| /** |
| * 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; |
| } |
| |
| priv->cfg->ops->smgmt->clear_station_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; |
| |
| 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_register(priv); |
| |
| IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); |
| set_bit(STATUS_READY, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| if (priv->error_recovering) |
| iwl_error_recovery(priv); |
| |
| iwl_power_update_mode(priv, 1); |
| |
| /* 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_leds_unregister(priv); |
| |
| priv->cfg->ops->smgmt->clear_station_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 bits and return */ |
| if (!iwl_is_init(priv)) { |
| priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << |
| STATUS_RF_KILL_HW | |
| test_bit(STATUS_RF_KILL_SW, &priv->status) << |
| STATUS_RF_KILL_SW | |
| 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 |
| * bits and continue taking the NIC down. */ |
| priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << |
| STATUS_RF_KILL_HW | |
| test_bit(STATUS_RF_KILL_SW, &priv->status) << |
| STATUS_RF_KILL_SW | |
| 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; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_clear_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_txq_ctx_stop(priv); |
| iwl_rxq_stop(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_prph(priv, APMG_CLK_DIS_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| iwl_release_nic_access(priv); |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| udelay(5); |
| |
| /* FIXME: apm_ops.suspend(priv) */ |
| if (exit_pending) |
| priv->cfg->ops->lib->apm_ops.stop(priv); |
| else |
| priv->cfg->ops->lib->apm_ops.reset(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 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; |
| } |
| |
| /* 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)) { |
| iwl_enable_interrupts(priv); |
| IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n", |
| test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW"); |
| 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++) { |
| |
| priv->cfg->ops->smgmt->clear_station_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; |
| } |
| |
| /* Clear out the uCode error bit if it is set */ |
| clear_bit(STATUS_FW_ERROR, &priv->status); |
| |
| /* 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; |
| |
| 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); |
| iwl_rfkill_set_hw_state(priv); |
| } |
| |
| 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; |
| |
| 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_power_cancel_timeout(priv); |
| 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_enable_management(priv); |
| |
| /* 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) |
| |
| 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); |
| |
| memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd)); |
| /* 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); |
| |
| iwl_rfkill_set_hw_state(priv); |
| |
| 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; |
| } |
| } |
| |
| 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) { |
| IWL_DEBUG_MAC80211(priv, "leave - skip\n"); |
| return; |
| } |
| |
| priv->is_open = 0; |
| |
| if (iwl_is_ready_rf(priv)) { |
| /* 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_rxon_add_station(priv, iwl_bcast_addr, 0); |
| } |
| 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->hw_params.sw_crypto) { |
| IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); |
| return -EOPNOTSUPP; |
| } |
| addr = sta ? sta->addr : iwl_bcast_addr; |
| sta_id = priv->cfg->ops->smgmt->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; |
| } |
| |
| static void iwl_mac_reset_tsf(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| |
| mutex_lock(&priv->mutex); |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info)); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_reset_qos(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->assoc_id = 0; |
| priv->assoc_capability = 0; |
| priv->assoc_station_added = 0; |
| |
| /* new association get rid of ibss beacon skb */ |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| priv->ibss_beacon = NULL; |
| |
| priv->beacon_int = priv->hw->conf.beacon_int; |
| priv->timestamp = 0; |
| if ((priv->iw_mode == NL80211_IFTYPE_STATION)) |
| priv->beacon_int = 0; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| /* we are restarting association process |
| * clear RXON_FILTER_ASSOC_MSK bit |
| */ |
| if (priv->iw_mode != NL80211_IFTYPE_AP) { |
| iwl_scan_cancel_timeout(priv, 100); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwlcore_commit_rxon(priv); |
| } |
| |
| iwl_power_update_mode(priv, 0); |
| |
| /* Per mac80211.h: This is only used in IBSS mode... */ |
| if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { |
| |
| /* switch to CAM during association period. |
| * the ucode will block any association/authentication |
| * frome during assiciation period if it can not hear |
| * the AP because of PM. the timer enable PM back is |
| * association do not complete |
| */ |
| if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN | |
| IEEE80211_CHAN_RADAR)) |
| iwl_power_disable_management(priv, 3000); |
| |
| IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| iwl_set_rate(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * 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. |
| */ |
| |
| static ssize_t show_debug_level(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| |
| return sprintf(buf, "0x%08X\n", priv->debug_level); |
| } |
| static ssize_t store_debug_level(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| 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; |
| |
| 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_version(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| struct iwl_alive_resp *palive = &priv->card_alive; |
| ssize_t pos = 0; |
| u16 eeprom_ver; |
| |
| if (palive->is_valid) |
| pos += sprintf(buf + pos, |
| "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n" |
| "fw type: 0x%01X 0x%01X\n", |
| palive->ucode_major, palive->ucode_minor, |
| palive->sw_rev[0], palive->sw_rev[1], |
| palive->ver_type, palive->ver_subtype); |
| else |
| pos += sprintf(buf + pos, "fw not loaded\n"); |
| |
| if (priv->eeprom) { |
| eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); |
| pos += sprintf(buf + pos, "EEPROM version: 0x%x\n", |
| eeprom_ver); |
| } else { |
| pos += sprintf(buf + pos, "EEPROM not initialzed\n"); |
| } |
| |
| return pos; |
| } |
| |
| static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL); |
| |
| static ssize_t show_temperature(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
| |
| 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 = (struct iwl_priv *)d->driver_data; |
| |
| 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 = (struct iwl_priv *)d->driver_data; |
| 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 |
| iwl_set_tx_power(priv, val, false); |
| |
| return count; |
| } |
| |
| 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 = (struct iwl_priv *)d->driver_data; |
| |
| 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 = (struct iwl_priv *)d->driver_data; |
| 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 = (struct iwl_priv *)d->driver_data; |
| |
| 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 = (struct iwl_priv *)d->driver_data; |
| 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 store_power_level(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| int ret; |
| unsigned long mode; |
| |
| |
| mutex_lock(&priv->mutex); |
| |
| ret = strict_strtoul(buf, 10, &mode); |
| if (ret) |
| goto out; |
| |
| ret = iwl_power_set_user_mode(priv, mode); |
| if (ret) { |
| IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n"); |
| goto out; |
| } |
| ret = count; |
| |
| out: |
| mutex_unlock(&priv->mutex); |
| return ret; |
| } |
| |
| static ssize_t show_power_level(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| int mode = priv->power_data.user_power_setting; |
| int system = priv->power_data.system_power_setting; |
| int level = priv->power_data.power_mode; |
| char *p = buf; |
| |
| switch (system) { |
| case IWL_POWER_SYS_AUTO: |
| p += sprintf(p, "SYSTEM:auto"); |
| break; |
| case IWL_POWER_SYS_AC: |
| p += sprintf(p, "SYSTEM:ac"); |
| break; |
| case IWL_POWER_SYS_BATTERY: |
| p += sprintf(p, "SYSTEM:battery"); |
| break; |
| } |
| |
| p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ? |
| "fixed" : "auto"); |
| p += sprintf(p, "\tINDEX:%d", level); |
| p += sprintf(p, "\n"); |
| return p - buf + 1; |
| } |
| |
| static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level, |
| store_power_level); |
| |
| |
| 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); |
| |
| |
| /***************************************************************************** |
| * |
| * 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->rf_kill, iwl_bg_rf_kill); |
| 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); |
| iwl_setup_power_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; |
| |
| tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) |
| iwl_irq_tasklet, (unsigned long)priv); |
| } |
| |
| static void iwl_cancel_deferred_work(struct iwl_priv *priv) |
| { |
| if (priv->cfg->ops->lib->cancel_deferred_work) |
| priv->cfg->ops->lib->cancel_deferred_work(priv); |
| |
| cancel_delayed_work_sync(&priv->init_alive_start); |
| cancel_delayed_work(&priv->scan_check); |
| cancel_delayed_work_sync(&priv->set_power_save); |
| cancel_delayed_work(&priv->alive_start); |
| cancel_work_sync(&priv->beacon_update); |
| del_timer_sync(&priv->statistics_periodic); |
| } |
| |
| static struct attribute *iwl_sysfs_entries[] = { |
| &dev_attr_flags.attr, |
| &dev_attr_filter_flags.attr, |
| &dev_attr_power_level.attr, |
| &dev_attr_statistics.attr, |
| &dev_attr_temperature.attr, |
| &dev_attr_tx_power.attr, |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| &dev_attr_debug_level.attr, |
| #endif |
| &dev_attr_version.attr, |
| |
| 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, |
| .config_interface = iwl_mac_config_interface, |
| .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 (cfg->mod_params->debug & 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; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| priv->debug_level = priv->cfg->mod_params->debug; |
| atomic_set(&priv->restrict_refcnt, 0); |
| #endif |
| |
| /************************** |
| * 2. Initializing PCI bus |
| **************************/ |
| if (pci_enable_device(pdev)) { |
| err = -ENODEV; |
| goto out_ieee80211_free_hw; |
| } |
| |
| pci_set_master(pdev); |
| |
| err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); |
| if (err) { |
| err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| /* both attempts failed: */ |
| if (err) { |
| IWL_WARN(priv, "No suitable DMA available.\n"); |
| goto out_pci_disable_device; |
| } |
| } |
| |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) |
| goto out_pci_disable_device; |
| |
| pci_set_drvdata(pdev, priv); |
| |
| |
| /*********************** |
| * 3. Read REV register |
| ***********************/ |
| priv->hw_base = pci_iomap(pdev, 0, 0); |
| if (!priv->hw_base) { |
| err = -ENODEV; |
| goto out_pci_release_regions; |
| } |
| |
| IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n", |
| (unsigned long long) pci_resource_len(pdev, 0)); |
| IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base); |
| |
| iwl_hw_detect(priv); |
| IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n", |
| priv->cfg->name, priv->hw_rev); |
| |
| /* We disable the RETRY_TIMEOUT register (0x41) to keep |
| * PCI Tx retries from interfering with C3 CPU state */ |
| pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); |
| |
| /* amp init */ |
| err = priv->cfg->ops->lib->apm_ops.init(priv); |
| if (err < 0) { |
| IWL_ERR(priv, "Failed to init APMG\n"); |
| goto out_iounmap; |
| } |
| /***************** |
| * 4. Read EEPROM |
| *****************/ |
| /* Read the EEPROM */ |
| err = iwl_eeprom_init(priv); |
| if (err) { |
| IWL_ERR(priv, "Unable to init EEPROM\n"); |
| goto out_iounmap; |
| } |
| err = iwl_eeprom_check_version(priv); |
| if (err) |
| goto out_free_eeprom; |
| |
| /* extract MAC Address */ |
| iwl_eeprom_get_mac(priv, priv->mac_addr); |
| IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr); |
| SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); |
| |
| /************************ |
| * 5. Setup HW constants |
| ************************/ |
| if (iwl_set_hw_params(priv)) { |
| IWL_ERR(priv, "failed to set hw parameters\n"); |
| goto out_free_eeprom; |
| } |
| |
| /******************* |
| * 6. Setup priv |
| *******************/ |
| |
| err = iwl_init_drv(priv); |
| if (err) |
| goto out_free_eeprom; |
| /* At this point both hw and priv are initialized. */ |
| |
| /********************************** |
| * 7. Initialize module parameters |
| **********************************/ |
| |
| /* Disable radio (SW RF KILL) via parameter when loading driver */ |
| if (priv->cfg->mod_params->disable) { |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| IWL_DEBUG_INFO(priv, "Radio disabled.\n"); |
| } |
| |
| /******************** |
| * 8. Setup services |
| ********************/ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| pci_enable_msi(priv->pci_dev); |
| |
| err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED, |
| DRV_NAME, priv); |
| if (err) { |
| IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq); |
| goto out_disable_msi; |
| } |
| err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group); |
| if (err) { |
| IWL_ERR(priv, "failed to create sysfs device attributes\n"); |
| goto out_free_irq; |
| } |
| |
| iwl_setup_deferred_work(priv); |
| iwl_setup_rx_handlers(priv); |
| |
| /********************************** |
| * 9. Setup and register mac80211 |
| **********************************/ |
| |
| /* enable interrupts if needed: hw bug w/a */ |
| pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd); |
| if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { |
| pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; |
| pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd); |
| } |
| |
| iwl_enable_interrupts(priv); |
| |
| err = iwl_setup_mac(priv); |
| if (err) |
| goto out_remove_sysfs; |
| |
| err = iwl_dbgfs_register(priv, DRV_NAME); |
| if (err) |
| IWL_ERR(priv, "failed to create debugfs files\n"); |
| |
| /* 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); |
| |
| err = iwl_rfkill_init(priv); |
| if (err) |
| IWL_ERR(priv, "Unable to initialize RFKILL system. " |
| "Ignoring error: %d\n", err); |
| else |
| iwl_rfkill_set_hw_state(priv); |
| |
| iwl_power_initialize(priv); |
| return 0; |
| |
| out_remove_sysfs: |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); |
| out_free_irq: |
| free_irq(priv->pci_dev->irq, priv); |
| out_disable_msi: |
| pci_disable_msi(priv->pci_dev); |
| iwl_uninit_drv(priv); |
| out_free_eeprom: |
| iwl_eeprom_free(priv); |
| out_iounmap: |
| pci_iounmap(pdev, priv->hw_base); |
| out_pci_release_regions: |
| pci_set_drvdata(pdev, NULL); |
| pci_release_regions(pdev); |
| out_pci_disable_device: |
| pci_disable_device(pdev); |
| out_ieee80211_free_hw: |
| ieee80211_free_hw(priv->hw); |
| out: |
| return err; |
| } |
| |
| static void __devexit iwl_pci_remove(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| unsigned long flags; |
| |
| if (!priv) |
| return; |
| |
| IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); |
| |
| iwl_dbgfs_unregister(priv); |
| sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); |
| |
| /* ieee80211_unregister_hw call wil cause iwl_mac_stop to |
| * to be called and iwl_down since we are removing the device |
| * we need to set STATUS_EXIT_PENDING bit. |
| */ |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| if (priv->mac80211_registered) { |
| ieee80211_unregister_hw(priv->hw); |
| priv->mac80211_registered = 0; |
| } else { |
| iwl_down(priv); |
| } |
| |
| /* make sure we flush any pending irq or |
| * tasklet for the driver |
| */ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_synchronize_irq(priv); |
| |
| iwl_rfkill_unregister(priv); |
| iwl_dealloc_ucode_pci(priv); |
| |
| if (priv->rxq.bd) |
| iwl_rx_queue_free(priv, &priv->rxq); |
| iwl_hw_txq_ctx_free(priv); |
| |
| priv->cfg->ops->smgmt->clear_station_table(priv); |
| iwl_eeprom_free(priv); |
| |
| |
| /*netif_stop_queue(dev); */ |
| flush_workqueue(priv->workqueue); |
| |
| /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes |
| * priv->workqueue... so we can't take down the workqueue |
| * until now... */ |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| |
| free_irq(priv->pci_dev->irq, priv); |
| pci_disable_msi(priv->pci_dev); |
| pci_iounmap(pdev, priv->hw_base); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| |
| iwl_uninit_drv(priv); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| ieee80211_free_hw(priv->hw); |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * driver and module entry point |
| * |
| *****************************************************************************/ |
| |
| /* Hardware specific file defines the PCI IDs table for that hardware module */ |
| static struct pci_device_id iwl_hw_card_ids[] = { |
| #ifdef CONFIG_IWL4965 |
| {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)}, |
| #endif /* CONFIG_IWL4965 */ |
| #ifdef CONFIG_IWL5000 |
| {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, |
| {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)}, |
| /* 5350 WiFi/WiMax */ |
| {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, |
| /* 5150 Wifi/WiMax */ |
| {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)}, |
| /* 6000/6050 Series */ |
| {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)}, |
| {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)}, |
| {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)}, |
| {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)}, |
| {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)}, |
| /* 1000 Series WiFi */ |
| {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl1000_bgn_cfg)}, |
| {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl1000_bgn_cfg)}, |
| #endif /* CONFIG_IWL5000 */ |
| |
| {0} |
| }; |
| MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); |
| |
| static struct pci_driver iwl_driver = { |
| .name = DRV_NAME, |
| .id_table = iwl_hw_card_ids, |
| .probe = iwl_pci_probe, |
| .remove = __devexit_p(iwl_pci_remove), |
| #ifdef CONFIG_PM |
| .suspend = iwl_pci_suspend, |
| .resume = iwl_pci_resume, |
| #endif |
| }; |
| |
| static int __init iwl_init(void) |
| { |
| |
| int ret; |
| printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); |
| printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); |
| |
| ret = iwlagn_rate_control_register(); |
| if (ret) { |
| printk(KERN_ERR DRV_NAME |
| "Unable to register rate control algorithm: %d\n", ret); |
| return ret; |
| } |
| |
| ret = pci_register_driver(&iwl_driver); |
| if (ret) { |
| printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n"); |
| goto error_register; |
| } |
| |
| return ret; |
| |
| error_register: |
| iwlagn_rate_control_unregister(); |
| return ret; |
| } |
| |
| static void __exit iwl_exit(void) |
| { |
| pci_unregister_driver(&iwl_driver); |
| iwlagn_rate_control_unregister(); |
| } |
| |
| module_exit(iwl_exit); |
| module_init(iwl_init); |