| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2007 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: |
| * James P. Ketrenos <ipw2100-admin@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| /* |
| * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets |
| * by defining IWL to either 3945 or 4965. The Makefile used when building |
| * the base targets will create base-3945.o and base-4965.o |
| * |
| * The eventual goal is to move as many of the #if IWL / #endif blocks out of |
| * this file and into the hardware specific implementation files (iwl-XXXX.c) |
| * and leave only the common (non #ifdef sprinkled) code in this file |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/version.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/ieee80211_radiotap.h> |
| #include <net/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #define IWL 3945 |
| |
| #include "iwlwifi.h" |
| #include "iwl-3945.h" |
| #include "iwl-helpers.h" |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| u32 iwl_debug_level; |
| #endif |
| |
| /****************************************************************************** |
| * |
| * module boiler plate |
| * |
| ******************************************************************************/ |
| |
| /* module parameters */ |
| int iwl_param_disable_hw_scan; |
| int iwl_param_debug; |
| int iwl_param_disable; /* def: enable radio */ |
| int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */ |
| int iwl_param_hwcrypto; /* def: using software encryption */ |
| int iwl_param_qos_enable = 1; |
| int iwl_param_queues_num = IWL_MAX_NUM_QUEUES; |
| |
| /* |
| * module name, copyright, version, etc. |
| * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk |
| */ |
| |
| #define DRV_DESCRIPTION \ |
| "Intel(R) PRO/Wireless 3945ABG/BG Network Connection 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 IWLWIFI_VERSION "1.1.17k" VD VS |
| #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation" |
| #define DRV_VERSION IWLWIFI_VERSION |
| |
| /* Change firmware file name, using "-" and incrementing number, |
| * *only* when uCode interface or architecture changes so that it |
| * is not compatible with earlier drivers. |
| * This number will also appear in << 8 position of 1st dword of uCode file */ |
| #define IWL3945_UCODE_API "-1" |
| |
| MODULE_DESCRIPTION(DRV_DESCRIPTION); |
| MODULE_VERSION(DRV_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT); |
| MODULE_LICENSE("GPL"); |
| |
| __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr) |
| { |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| int hdr_len = ieee80211_get_hdrlen(fc); |
| |
| if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA)) |
| return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN); |
| return NULL; |
| } |
| |
| static const struct ieee80211_hw_mode *iwl_get_hw_mode( |
| struct iwl_priv *priv, int mode) |
| { |
| int i; |
| |
| for (i = 0; i < 3; i++) |
| if (priv->modes[i].mode == mode) |
| return &priv->modes[i]; |
| |
| return NULL; |
| } |
| |
| static int iwl_is_empty_essid(const char *essid, int essid_len) |
| { |
| /* Single white space is for Linksys APs */ |
| if (essid_len == 1 && essid[0] == ' ') |
| return 1; |
| |
| /* Otherwise, if the entire essid is 0, we assume it is hidden */ |
| while (essid_len) { |
| essid_len--; |
| if (essid[essid_len] != '\0') |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static const char *iwl_escape_essid(const char *essid, u8 essid_len) |
| { |
| static char escaped[IW_ESSID_MAX_SIZE * 2 + 1]; |
| const char *s = essid; |
| char *d = escaped; |
| |
| if (iwl_is_empty_essid(essid, essid_len)) { |
| memcpy(escaped, "<hidden>", sizeof("<hidden>")); |
| return escaped; |
| } |
| |
| essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE); |
| while (essid_len--) { |
| if (*s == '\0') { |
| *d++ = '\\'; |
| *d++ = '0'; |
| s++; |
| } else |
| *d++ = *s++; |
| } |
| *d = '\0'; |
| return escaped; |
| } |
| |
| static void iwl_print_hex_dump(int level, void *p, u32 len) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (!(iwl_debug_level & level)) |
| return; |
| |
| print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1, |
| p, len, 1); |
| #endif |
| } |
| |
| /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** |
| * DMA services |
| * |
| * Theory of operation |
| * |
| * A queue is a circular buffers with 'Read' and 'Write' pointers. |
| * 2 empty entries always kept in the buffer to protect from overflow. |
| * |
| * For Tx queue, there are low mark and high mark limits. If, after queuing |
| * the packet for Tx, free space become < low mark, Tx queue stopped. When |
| * reclaiming packets (on 'tx done IRQ), if free space become > high mark, |
| * Tx queue resumed. |
| * |
| * The IWL operates with six queues, one receive queue in the device's |
| * sram, one transmit queue for sending commands to the device firmware, |
| * and four transmit queues for data. |
| ***************************************************/ |
| |
| static int iwl_queue_space(const struct iwl_queue *q) |
| { |
| int s = q->last_used - q->first_empty; |
| |
| if (q->last_used > q->first_empty) |
| s -= q->n_bd; |
| |
| if (s <= 0) |
| s += q->n_window; |
| /* keep some reserve to not confuse empty and full situations */ |
| s -= 2; |
| if (s < 0) |
| s = 0; |
| return s; |
| } |
| |
| /* XXX: n_bd must be power-of-two size */ |
| static inline int iwl_queue_inc_wrap(int index, int n_bd) |
| { |
| return ++index & (n_bd - 1); |
| } |
| |
| /* XXX: n_bd must be power-of-two size */ |
| static inline int iwl_queue_dec_wrap(int index, int n_bd) |
| { |
| return --index & (n_bd - 1); |
| } |
| |
| static inline int x2_queue_used(const struct iwl_queue *q, int i) |
| { |
| return q->first_empty > q->last_used ? |
| (i >= q->last_used && i < q->first_empty) : |
| !(i < q->last_used && i >= q->first_empty); |
| } |
| |
| static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge) |
| { |
| if (is_huge) |
| return q->n_window; |
| |
| return index & (q->n_window - 1); |
| } |
| |
| static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q, |
| int count, int slots_num, u32 id) |
| { |
| q->n_bd = count; |
| q->n_window = slots_num; |
| q->id = id; |
| |
| /* count must be power-of-two size, otherwise iwl_queue_inc_wrap |
| * and iwl_queue_dec_wrap are broken. */ |
| BUG_ON(!is_power_of_2(count)); |
| |
| /* slots_num must be power-of-two size, otherwise |
| * get_cmd_index is broken. */ |
| BUG_ON(!is_power_of_2(slots_num)); |
| |
| q->low_mark = q->n_window / 4; |
| if (q->low_mark < 4) |
| q->low_mark = 4; |
| |
| q->high_mark = q->n_window / 8; |
| if (q->high_mark < 2) |
| q->high_mark = 2; |
| |
| q->first_empty = q->last_used = 0; |
| |
| return 0; |
| } |
| |
| static int iwl_tx_queue_alloc(struct iwl_priv *priv, |
| struct iwl_tx_queue *txq, u32 id) |
| { |
| struct pci_dev *dev = priv->pci_dev; |
| |
| if (id != IWL_CMD_QUEUE_NUM) { |
| txq->txb = kmalloc(sizeof(txq->txb[0]) * |
| TFD_QUEUE_SIZE_MAX, GFP_KERNEL); |
| if (!txq->txb) { |
| IWL_ERROR("kmalloc for auxilary BD " |
| "structures failed\n"); |
| goto error; |
| } |
| } else |
| txq->txb = NULL; |
| |
| txq->bd = pci_alloc_consistent(dev, |
| sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX, |
| &txq->q.dma_addr); |
| |
| if (!txq->bd) { |
| IWL_ERROR("pci_alloc_consistent(%zd) failed\n", |
| sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX); |
| goto error; |
| } |
| txq->q.id = id; |
| |
| return 0; |
| |
| error: |
| if (txq->txb) { |
| kfree(txq->txb); |
| txq->txb = NULL; |
| } |
| |
| return -ENOMEM; |
| } |
| |
| int iwl_tx_queue_init(struct iwl_priv *priv, |
| struct iwl_tx_queue *txq, int slots_num, u32 txq_id) |
| { |
| struct pci_dev *dev = priv->pci_dev; |
| int len; |
| int rc = 0; |
| |
| /* alocate command space + one big command for scan since scan |
| * command is very huge the system will not have two scan at the |
| * same time */ |
| len = sizeof(struct iwl_cmd) * slots_num; |
| if (txq_id == IWL_CMD_QUEUE_NUM) |
| len += IWL_MAX_SCAN_SIZE; |
| txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd); |
| if (!txq->cmd) |
| return -ENOMEM; |
| |
| rc = iwl_tx_queue_alloc(priv, txq, txq_id); |
| if (rc) { |
| pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); |
| |
| return -ENOMEM; |
| } |
| txq->need_update = 0; |
| |
| /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise |
| * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */ |
| BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); |
| iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id); |
| |
| iwl_hw_tx_queue_init(priv, txq); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_tx_queue_free - Deallocate DMA queue. |
| * @txq: Transmit queue to deallocate. |
| * |
| * Empty queue by removing and destroying all BD's. |
| * Free all buffers. txq itself is not freed. |
| * |
| */ |
| void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq) |
| { |
| struct iwl_queue *q = &txq->q; |
| struct pci_dev *dev = priv->pci_dev; |
| int len; |
| |
| if (q->n_bd == 0) |
| return; |
| |
| /* first, empty all BD's */ |
| for (; q->first_empty != q->last_used; |
| q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) |
| iwl_hw_txq_free_tfd(priv, txq); |
| |
| len = sizeof(struct iwl_cmd) * q->n_window; |
| if (q->id == IWL_CMD_QUEUE_NUM) |
| len += IWL_MAX_SCAN_SIZE; |
| |
| pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd); |
| |
| /* free buffers belonging to queue itself */ |
| if (txq->q.n_bd) |
| pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) * |
| txq->q.n_bd, txq->bd, txq->q.dma_addr); |
| |
| if (txq->txb) { |
| kfree(txq->txb); |
| txq->txb = NULL; |
| } |
| |
| /* 0 fill whole structure */ |
| memset(txq, 0, sizeof(*txq)); |
| } |
| |
| const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| |
| /*************** STATION TABLE MANAGEMENT **** |
| * |
| * NOTE: This needs to be overhauled to better synchronize between |
| * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c |
| * |
| * mac80211 should also be examined to determine if sta_info is duplicating |
| * the functionality provided here |
| */ |
| |
| /**************************************************************/ |
| #if 0 /* temparary disable till we add real remove station */ |
| static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
| { |
| int index = IWL_INVALID_STATION; |
| int i; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| if (is_ap) |
| index = IWL_AP_ID; |
| else if (is_broadcast_ether_addr(addr)) |
| index = priv->hw_setting.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) |
| if (priv->stations[i].used && |
| !compare_ether_addr(priv->stations[i].sta.sta.addr, |
| addr)) { |
| index = i; |
| break; |
| } |
| |
| if (unlikely(index == IWL_INVALID_STATION)) |
| goto out; |
| |
| if (priv->stations[index].used) { |
| priv->stations[index].used = 0; |
| priv->num_stations--; |
| } |
| |
| BUG_ON(priv->num_stations < 0); |
| |
| out: |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return 0; |
| } |
| #endif |
| static void iwl_clear_stations_table(struct iwl_priv *priv) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| priv->num_stations = 0; |
| memset(priv->stations, 0, sizeof(priv->stations)); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| } |
| |
| |
| u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags) |
| { |
| int i; |
| int index = IWL_INVALID_STATION; |
| struct iwl_station_entry *station; |
| unsigned long flags_spin; |
| DECLARE_MAC_BUF(mac); |
| u8 rate; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| if (is_ap) |
| index = IWL_AP_ID; |
| else if (is_broadcast_ether_addr(addr)) |
| index = priv->hw_setting.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) { |
| if (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
| addr)) { |
| index = i; |
| break; |
| } |
| |
| if (!priv->stations[i].used && |
| index == IWL_INVALID_STATION) |
| index = i; |
| } |
| |
| /* These twh conditions has the same outcome but keep them separate |
| since they have different meaning */ |
| if (unlikely(index == IWL_INVALID_STATION)) { |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| return index; |
| } |
| |
| if (priv->stations[index].used && |
| !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) { |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| return index; |
| } |
| |
| IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr)); |
| station = &priv->stations[index]; |
| station->used = 1; |
| priv->num_stations++; |
| |
| memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); |
| memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
| station->sta.mode = 0; |
| station->sta.sta.sta_id = index; |
| station->sta.station_flags = 0; |
| |
| rate = (priv->phymode == MODE_IEEE80211A) ? IWL_RATE_6M_PLCP : |
| IWL_RATE_1M_PLCP | priv->hw_setting.cck_flag; |
| |
| /* Turn on both antennas for the station... */ |
| station->sta.rate_n_flags = |
| iwl_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK); |
| station->current_rate.rate_n_flags = |
| le16_to_cpu(station->sta.rate_n_flags); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| iwl_send_add_station(priv, &station->sta, flags); |
| return index; |
| |
| } |
| |
| /*************** DRIVER STATUS FUNCTIONS *****/ |
| |
| static inline int iwl_is_ready(struct iwl_priv *priv) |
| { |
| /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are |
| * set but EXIT_PENDING is not */ |
| return test_bit(STATUS_READY, &priv->status) && |
| test_bit(STATUS_GEO_CONFIGURED, &priv->status) && |
| !test_bit(STATUS_EXIT_PENDING, &priv->status); |
| } |
| |
| static inline int iwl_is_alive(struct iwl_priv *priv) |
| { |
| return test_bit(STATUS_ALIVE, &priv->status); |
| } |
| |
| static inline int iwl_is_init(struct iwl_priv *priv) |
| { |
| return test_bit(STATUS_INIT, &priv->status); |
| } |
| |
| static inline int iwl_is_rfkill(struct iwl_priv *priv) |
| { |
| return test_bit(STATUS_RF_KILL_HW, &priv->status) || |
| test_bit(STATUS_RF_KILL_SW, &priv->status); |
| } |
| |
| static inline int iwl_is_ready_rf(struct iwl_priv *priv) |
| { |
| |
| if (iwl_is_rfkill(priv)) |
| return 0; |
| |
| return iwl_is_ready(priv); |
| } |
| |
| /*************** HOST COMMAND QUEUE FUNCTIONS *****/ |
| |
| #define IWL_CMD(x) case x : return #x |
| |
| static const char *get_cmd_string(u8 cmd) |
| { |
| switch (cmd) { |
| IWL_CMD(REPLY_ALIVE); |
| IWL_CMD(REPLY_ERROR); |
| IWL_CMD(REPLY_RXON); |
| IWL_CMD(REPLY_RXON_ASSOC); |
| IWL_CMD(REPLY_QOS_PARAM); |
| IWL_CMD(REPLY_RXON_TIMING); |
| IWL_CMD(REPLY_ADD_STA); |
| IWL_CMD(REPLY_REMOVE_STA); |
| IWL_CMD(REPLY_REMOVE_ALL_STA); |
| IWL_CMD(REPLY_3945_RX); |
| IWL_CMD(REPLY_TX); |
| IWL_CMD(REPLY_RATE_SCALE); |
| IWL_CMD(REPLY_LEDS_CMD); |
| IWL_CMD(REPLY_TX_LINK_QUALITY_CMD); |
| IWL_CMD(RADAR_NOTIFICATION); |
| IWL_CMD(REPLY_QUIET_CMD); |
| IWL_CMD(REPLY_CHANNEL_SWITCH); |
| IWL_CMD(CHANNEL_SWITCH_NOTIFICATION); |
| IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD); |
| IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION); |
| IWL_CMD(POWER_TABLE_CMD); |
| IWL_CMD(PM_SLEEP_NOTIFICATION); |
| IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC); |
| IWL_CMD(REPLY_SCAN_CMD); |
| IWL_CMD(REPLY_SCAN_ABORT_CMD); |
| IWL_CMD(SCAN_START_NOTIFICATION); |
| IWL_CMD(SCAN_RESULTS_NOTIFICATION); |
| IWL_CMD(SCAN_COMPLETE_NOTIFICATION); |
| IWL_CMD(BEACON_NOTIFICATION); |
| IWL_CMD(REPLY_TX_BEACON); |
| IWL_CMD(WHO_IS_AWAKE_NOTIFICATION); |
| IWL_CMD(QUIET_NOTIFICATION); |
| IWL_CMD(REPLY_TX_PWR_TABLE_CMD); |
| IWL_CMD(MEASURE_ABORT_NOTIFICATION); |
| IWL_CMD(REPLY_BT_CONFIG); |
| IWL_CMD(REPLY_STATISTICS_CMD); |
| IWL_CMD(STATISTICS_NOTIFICATION); |
| IWL_CMD(REPLY_CARD_STATE_CMD); |
| IWL_CMD(CARD_STATE_NOTIFICATION); |
| IWL_CMD(MISSED_BEACONS_NOTIFICATION); |
| default: |
| return "UNKNOWN"; |
| |
| } |
| } |
| |
| #define HOST_COMPLETE_TIMEOUT (HZ / 2) |
| |
| /** |
| * iwl_enqueue_hcmd - enqueue a uCode command |
| * @priv: device private data point |
| * @cmd: a point to the ucode command structure |
| * |
| * The function returns < 0 values to indicate the operation is |
| * failed. On success, it turns the index (> 0) of command in the |
| * command queue. |
| */ |
| static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
| { |
| struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; |
| struct iwl_queue *q = &txq->q; |
| struct iwl_tfd_frame *tfd; |
| u32 *control_flags; |
| struct iwl_cmd *out_cmd; |
| u32 idx; |
| u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); |
| dma_addr_t phys_addr; |
| int pad; |
| u16 count; |
| int ret; |
| unsigned long flags; |
| |
| /* If any of the command structures end up being larger than |
| * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then |
| * we will need to increase the size of the TFD entries */ |
| BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && |
| !(cmd->meta.flags & CMD_SIZE_HUGE)); |
| |
| if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) { |
| IWL_ERROR("No space for Tx\n"); |
| return -ENOSPC; |
| } |
| |
| spin_lock_irqsave(&priv->hcmd_lock, flags); |
| |
| tfd = &txq->bd[q->first_empty]; |
| memset(tfd, 0, sizeof(*tfd)); |
| |
| control_flags = (u32 *) tfd; |
| |
| idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE); |
| out_cmd = &txq->cmd[idx]; |
| |
| out_cmd->hdr.cmd = cmd->id; |
| memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta)); |
| memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); |
| |
| /* At this point, the out_cmd now has all of the incoming cmd |
| * information */ |
| |
| out_cmd->hdr.flags = 0; |
| out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) | |
| INDEX_TO_SEQ(q->first_empty)); |
| if (out_cmd->meta.flags & CMD_SIZE_HUGE) |
| out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME); |
| |
| phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx + |
| offsetof(struct iwl_cmd, hdr); |
| iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); |
| |
| pad = U32_PAD(cmd->len); |
| count = TFD_CTL_COUNT_GET(*control_flags); |
| *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad); |
| |
| IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " |
| "%d bytes at %d[%d]:%d\n", |
| get_cmd_string(out_cmd->hdr.cmd), |
| out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), |
| fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM); |
| |
| txq->need_update = 1; |
| q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd); |
| ret = iwl_tx_queue_update_write_ptr(priv, txq); |
| |
| spin_unlock_irqrestore(&priv->hcmd_lock, flags); |
| return ret ? ret : idx; |
| } |
| |
| int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
| { |
| int ret; |
| |
| BUG_ON(!(cmd->meta.flags & CMD_ASYNC)); |
| |
| /* An asynchronous command can not expect an SKB to be set. */ |
| BUG_ON(cmd->meta.flags & CMD_WANT_SKB); |
| |
| /* An asynchronous command MUST have a callback. */ |
| BUG_ON(!cmd->meta.u.callback); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return -EBUSY; |
| |
| ret = iwl_enqueue_hcmd(priv, cmd); |
| if (ret < 0) { |
| IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n", |
| get_cmd_string(cmd->id), ret); |
| return ret; |
| } |
| return 0; |
| } |
| |
| int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
| { |
| int cmd_idx; |
| int ret; |
| static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */ |
| |
| BUG_ON(cmd->meta.flags & CMD_ASYNC); |
| |
| /* A synchronous command can not have a callback set. */ |
| BUG_ON(cmd->meta.u.callback != NULL); |
| |
| if (atomic_xchg(&entry, 1)) { |
| IWL_ERROR("Error sending %s: Already sending a host command\n", |
| get_cmd_string(cmd->id)); |
| return -EBUSY; |
| } |
| |
| set_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| |
| if (cmd->meta.flags & CMD_WANT_SKB) |
| cmd->meta.source = &cmd->meta; |
| |
| cmd_idx = iwl_enqueue_hcmd(priv, cmd); |
| if (cmd_idx < 0) { |
| ret = cmd_idx; |
| IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n", |
| get_cmd_string(cmd->id), ret); |
| goto out; |
| } |
| |
| ret = wait_event_interruptible_timeout(priv->wait_command_queue, |
| !test_bit(STATUS_HCMD_ACTIVE, &priv->status), |
| HOST_COMPLETE_TIMEOUT); |
| if (!ret) { |
| if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) { |
| IWL_ERROR("Error sending %s: time out after %dms.\n", |
| get_cmd_string(cmd->id), |
| jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); |
| |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| ret = -ETIMEDOUT; |
| goto cancel; |
| } |
| } |
| |
| if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { |
| IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n", |
| get_cmd_string(cmd->id)); |
| ret = -ECANCELED; |
| goto fail; |
| } |
| if (test_bit(STATUS_FW_ERROR, &priv->status)) { |
| IWL_DEBUG_INFO("Command %s failed: FW Error\n", |
| get_cmd_string(cmd->id)); |
| ret = -EIO; |
| goto fail; |
| } |
| if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) { |
| IWL_ERROR("Error: Response NULL in '%s'\n", |
| get_cmd_string(cmd->id)); |
| ret = -EIO; |
| goto out; |
| } |
| |
| ret = 0; |
| goto out; |
| |
| cancel: |
| if (cmd->meta.flags & CMD_WANT_SKB) { |
| struct iwl_cmd *qcmd; |
| |
| /* Cancel the CMD_WANT_SKB flag for the cmd in the |
| * TX cmd queue. Otherwise in case the cmd comes |
| * in later, it will possibly set an invalid |
| * address (cmd->meta.source). */ |
| qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx]; |
| qcmd->meta.flags &= ~CMD_WANT_SKB; |
| } |
| fail: |
| if (cmd->meta.u.skb) { |
| dev_kfree_skb_any(cmd->meta.u.skb); |
| cmd->meta.u.skb = NULL; |
| } |
| out: |
| atomic_set(&entry, 0); |
| return ret; |
| } |
| |
| int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
| { |
| /* A command can not be asynchronous AND expect an SKB to be set. */ |
| BUG_ON((cmd->meta.flags & CMD_ASYNC) && |
| (cmd->meta.flags & CMD_WANT_SKB)); |
| |
| if (cmd->meta.flags & CMD_ASYNC) |
| return iwl_send_cmd_async(priv, cmd); |
| |
| return iwl_send_cmd_sync(priv, cmd); |
| } |
| |
| int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = id, |
| .len = len, |
| .data = data, |
| }; |
| |
| return iwl_send_cmd_sync(priv, &cmd); |
| } |
| |
| static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = id, |
| .len = sizeof(val), |
| .data = &val, |
| }; |
| |
| return iwl_send_cmd_sync(priv, &cmd); |
| } |
| |
| int iwl_send_statistics_request(struct iwl_priv *priv) |
| { |
| return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0); |
| } |
| |
| /** |
| * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON |
| * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz |
| * @channel: Any channel valid for the requested phymode |
| |
| * In addition to setting the staging RXON, priv->phymode is also set. |
| * |
| * NOTE: Does not commit to the hardware; it sets appropriate bit fields |
| * in the staging RXON flag structure based on the phymode |
| */ |
| static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel) |
| { |
| if (!iwl_get_channel_info(priv, phymode, channel)) { |
| IWL_DEBUG_INFO("Could not set channel to %d [%d]\n", |
| channel, phymode); |
| return -EINVAL; |
| } |
| |
| if ((le16_to_cpu(priv->staging_rxon.channel) == channel) && |
| (priv->phymode == phymode)) |
| return 0; |
| |
| priv->staging_rxon.channel = cpu_to_le16(channel); |
| if (phymode == MODE_IEEE80211A) |
| priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK; |
| else |
| priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; |
| |
| priv->phymode = phymode; |
| |
| IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_check_rxon_cmd - validate RXON structure is valid |
| * |
| * NOTE: This is really only useful during development and can eventually |
| * be #ifdef'd out once the driver is stable and folks aren't actively |
| * making changes |
| */ |
| static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon) |
| { |
| int error = 0; |
| int counter = 1; |
| |
| if (rxon->flags & RXON_FLG_BAND_24G_MSK) { |
| error |= le32_to_cpu(rxon->flags & |
| (RXON_FLG_TGJ_NARROW_BAND_MSK | |
| RXON_FLG_RADAR_DETECT_MSK)); |
| if (error) |
| IWL_WARNING("check 24G fields %d | %d\n", |
| counter++, error); |
| } else { |
| error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ? |
| 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK); |
| if (error) |
| IWL_WARNING("check 52 fields %d | %d\n", |
| counter++, error); |
| error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK); |
| if (error) |
| IWL_WARNING("check 52 CCK %d | %d\n", |
| counter++, error); |
| } |
| error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1; |
| if (error) |
| IWL_WARNING("check mac addr %d | %d\n", counter++, error); |
| |
| /* make sure basic rates 6Mbps and 1Mbps are supported */ |
| error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) && |
| ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0)); |
| if (error) |
| IWL_WARNING("check basic rate %d | %d\n", counter++, error); |
| |
| error |= (le16_to_cpu(rxon->assoc_id) > 2007); |
| if (error) |
| IWL_WARNING("check assoc id %d | %d\n", counter++, error); |
| |
| error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) |
| == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)); |
| if (error) |
| IWL_WARNING("check CCK and short slot %d | %d\n", |
| counter++, error); |
| |
| error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) |
| == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)); |
| if (error) |
| IWL_WARNING("check CCK & auto detect %d | %d\n", |
| counter++, error); |
| |
| error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | |
| RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK); |
| if (error) |
| IWL_WARNING("check TGG and auto detect %d | %d\n", |
| counter++, error); |
| |
| if ((rxon->flags & RXON_FLG_DIS_DIV_MSK)) |
| error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK | |
| RXON_FLG_ANT_A_MSK)) == 0); |
| if (error) |
| IWL_WARNING("check antenna %d %d\n", counter++, error); |
| |
| if (error) |
| IWL_WARNING("Tuning to channel %d\n", |
| le16_to_cpu(rxon->channel)); |
| |
| if (error) { |
| IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /** |
| * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit |
| * @priv: staging_rxon is comapred to active_rxon |
| * |
| * If the RXON structure is changing sufficient to require a new |
| * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1 |
| * to indicate a new tune is required. |
| */ |
| static int iwl_full_rxon_required(struct iwl_priv *priv) |
| { |
| |
| /* These items are only settable from the full RXON command */ |
| if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) || |
| compare_ether_addr(priv->staging_rxon.bssid_addr, |
| priv->active_rxon.bssid_addr) || |
| compare_ether_addr(priv->staging_rxon.node_addr, |
| priv->active_rxon.node_addr) || |
| compare_ether_addr(priv->staging_rxon.wlap_bssid_addr, |
| priv->active_rxon.wlap_bssid_addr) || |
| (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) || |
| (priv->staging_rxon.channel != priv->active_rxon.channel) || |
| (priv->staging_rxon.air_propagation != |
| priv->active_rxon.air_propagation) || |
| (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id)) |
| return 1; |
| |
| /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can |
| * be updated with the RXON_ASSOC command -- however only some |
| * flag transitions are allowed using RXON_ASSOC */ |
| |
| /* Check if we are not switching bands */ |
| if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) != |
| (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)) |
| return 1; |
| |
| /* Check if we are switching association toggle */ |
| if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) != |
| (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int iwl_send_rxon_assoc(struct iwl_priv *priv) |
| { |
| int rc = 0; |
| struct iwl_rx_packet *res = NULL; |
| struct iwl_rxon_assoc_cmd rxon_assoc; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_RXON_ASSOC, |
| .len = sizeof(rxon_assoc), |
| .meta.flags = CMD_WANT_SKB, |
| .data = &rxon_assoc, |
| }; |
| const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; |
| const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; |
| |
| if ((rxon1->flags == rxon2->flags) && |
| (rxon1->filter_flags == rxon2->filter_flags) && |
| (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && |
| (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { |
| IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n"); |
| return 0; |
| } |
| |
| rxon_assoc.flags = priv->staging_rxon.flags; |
| rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; |
| rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; |
| rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; |
| rxon_assoc.reserved = 0; |
| |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) |
| return rc; |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n"); |
| rc = -EIO; |
| } |
| |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return rc; |
| } |
| |
| /** |
| * iwl_commit_rxon - commit staging_rxon to hardware |
| * |
| * The RXON command in staging_rxon is commited 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. |
| */ |
| static 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 rc = 0; |
| DECLARE_MAC_BUF(mac); |
| |
| if (!iwl_is_alive(priv)) |
| return -1; |
| |
| /* always get timestamp with Rx frame */ |
| priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK; |
| |
| /* select antenna */ |
| priv->staging_rxon.flags &= |
| ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); |
| priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv); |
| |
| rc = iwl_check_rxon_cmd(&priv->staging_rxon); |
| if (rc) { |
| IWL_ERROR("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)) { |
| rc = iwl_send_rxon_assoc(priv); |
| if (rc) { |
| IWL_ERROR("Error setting RXON_ASSOC " |
| "configuration (%d).\n", rc); |
| return rc; |
| } |
| |
| memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); |
| |
| return 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) && |
| (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) { |
| IWL_DEBUG_INFO("Toggling associated bit on current RXON\n"); |
| active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| |
| rc = 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 (rc) { |
| active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; |
| IWL_ERROR("Error clearing ASSOC_MSK on current " |
| "configuration (%d).\n", rc); |
| return rc; |
| } |
| } |
| |
| IWL_DEBUG_INFO("Sending RXON\n" |
| "* with%s RXON_FILTER_ASSOC_MSK\n" |
| "* channel = %d\n" |
| "* bssid = %s\n", |
| ((priv->staging_rxon.filter_flags & |
| RXON_FILTER_ASSOC_MSK) ? "" : "out"), |
| le16_to_cpu(priv->staging_rxon.channel), |
| print_mac(mac, priv->staging_rxon.bssid_addr)); |
| |
| /* Apply the new configuration */ |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON, |
| sizeof(struct iwl_rxon_cmd), &priv->staging_rxon); |
| if (rc) { |
| IWL_ERROR("Error setting new configuration (%d).\n", rc); |
| return rc; |
| } |
| |
| memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); |
| |
| iwl_clear_stations_table(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 */ |
| rc = iwl_hw_reg_send_txpower(priv); |
| if (rc) { |
| IWL_ERROR("Error setting Tx power (%d).\n", rc); |
| return rc; |
| } |
| |
| /* Add the broadcast address so we can send broadcast frames */ |
| if (iwl_add_station(priv, BROADCAST_ADDR, 0, 0) == |
| IWL_INVALID_STATION) { |
| IWL_ERROR("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 (iwl_is_associated(priv) && |
| (priv->iw_mode == IEEE80211_IF_TYPE_STA)) |
| if (iwl_add_station(priv, priv->active_rxon.bssid_addr, 1, 0) |
| == IWL_INVALID_STATION) { |
| IWL_ERROR("Error adding AP address for transmit.\n"); |
| return -EIO; |
| } |
| |
| /* Init the hardware's rate fallback order based on the |
| * phymode */ |
| rc = iwl3945_init_hw_rate_table(priv); |
| if (rc) { |
| IWL_ERROR("Error setting HW rate table: %02X\n", rc); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int iwl_send_bt_config(struct iwl_priv *priv) |
| { |
| struct iwl_bt_cmd bt_cmd = { |
| .flags = 3, |
| .lead_time = 0xAA, |
| .max_kill = 1, |
| .kill_ack_mask = 0, |
| .kill_cts_mask = 0, |
| }; |
| |
| return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
| sizeof(struct iwl_bt_cmd), &bt_cmd); |
| } |
| |
| static int iwl_send_scan_abort(struct iwl_priv *priv) |
| { |
| int rc = 0; |
| struct iwl_rx_packet *res; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SCAN_ABORT_CMD, |
| .meta.flags = CMD_WANT_SKB, |
| }; |
| |
| /* If there isn't a scan actively going on in the hardware |
| * then we are in between scan bands and not actually |
| * actively scanning, so don't send the abort command */ |
| if (!test_bit(STATUS_SCAN_HW, &priv->status)) { |
| clear_bit(STATUS_SCAN_ABORTING, &priv->status); |
| return 0; |
| } |
| |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) { |
| clear_bit(STATUS_SCAN_ABORTING, &priv->status); |
| return rc; |
| } |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->u.status != CAN_ABORT_STATUS) { |
| /* The scan abort will return 1 for success or |
| * 2 for "failure". A failure condition can be |
| * due to simply not being in an active scan which |
| * can occur if we send the scan abort before we |
| * the microcode has notified us that a scan is |
| * completed. */ |
| IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status); |
| clear_bit(STATUS_SCAN_ABORTING, &priv->status); |
| clear_bit(STATUS_SCAN_HW, &priv->status); |
| } |
| |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return rc; |
| } |
| |
| static int iwl_card_state_sync_callback(struct iwl_priv *priv, |
| struct iwl_cmd *cmd, |
| struct sk_buff *skb) |
| { |
| return 1; |
| } |
| |
| /* |
| * CARD_STATE_CMD |
| * |
| * Use: Sets the internal card state to enable, disable, or halt |
| * |
| * When in the 'enable' state the card operates as normal. |
| * When in the 'disable' state, the card enters into a low power mode. |
| * When in the 'halt' state, the card is shut down and must be fully |
| * restarted to come back on. |
| */ |
| static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_CARD_STATE_CMD, |
| .len = sizeof(u32), |
| .data = &flags, |
| .meta.flags = meta_flag, |
| }; |
| |
| if (meta_flag & CMD_ASYNC) |
| cmd.meta.u.callback = iwl_card_state_sync_callback; |
| |
| return iwl_send_cmd(priv, &cmd); |
| } |
| |
| static int iwl_add_sta_sync_callback(struct iwl_priv *priv, |
| struct iwl_cmd *cmd, struct sk_buff *skb) |
| { |
| struct iwl_rx_packet *res = NULL; |
| |
| if (!skb) { |
| IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n"); |
| return 1; |
| } |
| |
| res = (struct iwl_rx_packet *)skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", |
| res->hdr.flags); |
| return 1; |
| } |
| |
| switch (res->u.add_sta.status) { |
| case ADD_STA_SUCCESS_MSK: |
| break; |
| default: |
| break; |
| } |
| |
| /* We didn't cache the SKB; let the caller free it */ |
| return 1; |
| } |
| |
| int iwl_send_add_station(struct iwl_priv *priv, |
| struct iwl_addsta_cmd *sta, u8 flags) |
| { |
| struct iwl_rx_packet *res = NULL; |
| int rc = 0; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_ADD_STA, |
| .len = sizeof(struct iwl_addsta_cmd), |
| .meta.flags = flags, |
| .data = sta, |
| }; |
| |
| if (flags & CMD_ASYNC) |
| cmd.meta.u.callback = iwl_add_sta_sync_callback; |
| else |
| cmd.meta.flags |= CMD_WANT_SKB; |
| |
| rc = iwl_send_cmd(priv, &cmd); |
| |
| if (rc || (flags & CMD_ASYNC)) |
| return rc; |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", |
| res->hdr.flags); |
| rc = -EIO; |
| } |
| |
| if (rc == 0) { |
| switch (res->u.add_sta.status) { |
| case ADD_STA_SUCCESS_MSK: |
| IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n"); |
| break; |
| default: |
| rc = -EIO; |
| IWL_WARNING("REPLY_ADD_STA failed\n"); |
| break; |
| } |
| } |
| |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return rc; |
| } |
| |
| static int iwl_update_sta_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| __le16 key_flags = 0; |
| |
| switch (keyconf->alg) { |
| case ALG_CCMP: |
| key_flags |= STA_KEY_FLG_CCMP; |
| key_flags |= cpu_to_le16( |
| keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| key_flags &= ~STA_KEY_FLG_INVALID; |
| break; |
| case ALG_TKIP: |
| case ALG_WEP: |
| return -EINVAL; |
| default: |
| return -EINVAL; |
| } |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| priv->stations[sta_id].keyinfo.alg = keyconf->alg; |
| priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, |
| keyconf->keylen); |
| |
| memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, |
| keyconf->keylen); |
| priv->stations[sta_id].sta.key.key_flags = key_flags; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n"); |
| iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0); |
| return 0; |
| } |
| |
| static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key)); |
| memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo)); |
| priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n"); |
| iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0); |
| return 0; |
| } |
| |
| static void iwl_clear_free_frames(struct iwl_priv *priv) |
| { |
| struct list_head *element; |
| |
| IWL_DEBUG_INFO("%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_WARNING("%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_ERROR("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); |
| } |
| |
| unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv, |
| struct ieee80211_hdr *hdr, |
| const u8 *dest, int left) |
| { |
| |
| if (!iwl_is_associated(priv) || !priv->ibss_beacon || |
| ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) && |
| (priv->iw_mode != IEEE80211_IF_TYPE_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 int iwl_rate_index_from_plcp(int plcp) |
| { |
| int i = 0; |
| |
| for (i = 0; i < IWL_RATE_COUNT; i++) |
| if (iwl_rates[i].plcp == plcp) |
| return i; |
| return -1; |
| } |
| |
| static u8 iwl_rate_get_lowest_plcp(int rate_mask) |
| { |
| u8 i; |
| |
| for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; |
| i = iwl_rates[i].next_ieee) { |
| if (rate_mask & (1 << i)) |
| return iwl_rates[i].plcp; |
| } |
| |
| return IWL_RATE_INVALID; |
| } |
| |
| 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_ERROR("Could not obtain free frame buffer for beacon " |
| "command.\n"); |
| return -ENOMEM; |
| } |
| |
| if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) { |
| rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & |
| 0xFF0); |
| if (rate == IWL_INVALID_RATE) |
| rate = IWL_RATE_6M_PLCP; |
| } else { |
| rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF); |
| if (rate == IWL_INVALID_RATE) |
| rate = IWL_RATE_1M_PLCP; |
| } |
| |
| 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; |
| } |
| |
| /****************************************************************************** |
| * |
| * EEPROM related functions |
| * |
| ******************************************************************************/ |
| |
| static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac) |
| { |
| memcpy(mac, priv->eeprom.mac_address, 6); |
| } |
| |
| /** |
| * iwl_eeprom_init - read EEPROM contents |
| * |
| * Load the EEPROM from adapter into priv->eeprom |
| * |
| * NOTE: This routine uses the non-debug IO access functions. |
| */ |
| int iwl_eeprom_init(struct iwl_priv *priv) |
| { |
| u16 *e = (u16 *)&priv->eeprom; |
| u32 gp = iwl_read32(priv, CSR_EEPROM_GP); |
| u32 r; |
| int sz = sizeof(priv->eeprom); |
| int rc; |
| int i; |
| u16 addr; |
| |
| /* The EEPROM structure has several padding buffers within it |
| * and when adding new EEPROM maps is subject to programmer errors |
| * which may be very difficult to identify without explicitly |
| * checking the resulting size of the eeprom map. */ |
| BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE); |
| |
| if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { |
| IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); |
| return -ENOENT; |
| } |
| |
| rc = iwl_eeprom_aqcuire_semaphore(priv); |
| if (rc < 0) { |
| IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n"); |
| return -ENOENT; |
| } |
| |
| /* eeprom is an array of 16bit values */ |
| for (addr = 0; addr < sz; addr += sizeof(u16)) { |
| _iwl_write32(priv, CSR_EEPROM_REG, addr << 1); |
| _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD); |
| |
| for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT; |
| i += IWL_EEPROM_ACCESS_DELAY) { |
| r = _iwl_read_restricted(priv, CSR_EEPROM_REG); |
| if (r & CSR_EEPROM_REG_READ_VALID_MSK) |
| break; |
| udelay(IWL_EEPROM_ACCESS_DELAY); |
| } |
| |
| if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) { |
| IWL_ERROR("Time out reading EEPROM[%d]", addr); |
| return -ETIMEDOUT; |
| } |
| e[addr / 2] = le16_to_cpu(r >> 16); |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * Misc. internal state and helper functions |
| * |
| ******************************************************************************/ |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| |
| /** |
| * iwl_report_frame - dump frame to syslog during debug sessions |
| * |
| * hack this function to show different aspects of received frames, |
| * including selective frame dumps. |
| * group100 parameter selects whether to show 1 out of 100 good frames. |
| * |
| * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type |
| * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats) |
| * is 3945-specific and gives bad output for 4965. Need to split the |
| * functionality, keep common stuff here. |
| */ |
| void iwl_report_frame(struct iwl_priv *priv, |
| struct iwl_rx_packet *pkt, |
| struct ieee80211_hdr *header, int group100) |
| { |
| u32 to_us; |
| u32 print_summary = 0; |
| u32 print_dump = 0; /* set to 1 to dump all frames' contents */ |
| u32 hundred = 0; |
| u32 dataframe = 0; |
| u16 fc; |
| u16 seq_ctl; |
| u16 channel; |
| u16 phy_flags; |
| int rate_sym; |
| u16 length; |
| u16 status; |
| u16 bcn_tmr; |
| u32 tsf_low; |
| u64 tsf; |
| u8 rssi; |
| u8 agc; |
| u16 sig_avg; |
| u16 noise_diff; |
| struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); |
| struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); |
| struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt); |
| u8 *data = IWL_RX_DATA(pkt); |
| |
| /* MAC header */ |
| fc = le16_to_cpu(header->frame_control); |
| seq_ctl = le16_to_cpu(header->seq_ctrl); |
| |
| /* metadata */ |
| channel = le16_to_cpu(rx_hdr->channel); |
| phy_flags = le16_to_cpu(rx_hdr->phy_flags); |
| rate_sym = rx_hdr->rate; |
| length = le16_to_cpu(rx_hdr->len); |
| |
| /* end-of-frame status and timestamp */ |
| status = le32_to_cpu(rx_end->status); |
| bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); |
| tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; |
| tsf = le64_to_cpu(rx_end->timestamp); |
| |
| /* signal statistics */ |
| rssi = rx_stats->rssi; |
| agc = rx_stats->agc; |
| sig_avg = le16_to_cpu(rx_stats->sig_avg); |
| noise_diff = le16_to_cpu(rx_stats->noise_diff); |
| |
| to_us = !compare_ether_addr(header->addr1, priv->mac_addr); |
| |
| /* if data frame is to us and all is good, |
| * (optionally) print summary for only 1 out of every 100 */ |
| if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) == |
| (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) { |
| dataframe = 1; |
| if (!group100) |
| print_summary = 1; /* print each frame */ |
| else if (priv->framecnt_to_us < 100) { |
| priv->framecnt_to_us++; |
| print_summary = 0; |
| } else { |
| priv->framecnt_to_us = 0; |
| print_summary = 1; |
| hundred = 1; |
| } |
| } else { |
| /* print summary for all other frames */ |
| print_summary = 1; |
| } |
| |
| if (print_summary) { |
| char *title; |
| u32 rate; |
| |
| if (hundred) |
| title = "100Frames"; |
| else if (fc & IEEE80211_FCTL_RETRY) |
| title = "Retry"; |
| else if (ieee80211_is_assoc_response(fc)) |
| title = "AscRsp"; |
| else if (ieee80211_is_reassoc_response(fc)) |
| title = "RasRsp"; |
| else if (ieee80211_is_probe_response(fc)) { |
| title = "PrbRsp"; |
| print_dump = 1; /* dump frame contents */ |
| } else if (ieee80211_is_beacon(fc)) { |
| title = "Beacon"; |
| print_dump = 1; /* dump frame contents */ |
| } else if (ieee80211_is_atim(fc)) |
| title = "ATIM"; |
| else if (ieee80211_is_auth(fc)) |
| title = "Auth"; |
| else if (ieee80211_is_deauth(fc)) |
| title = "DeAuth"; |
| else if (ieee80211_is_disassoc(fc)) |
| title = "DisAssoc"; |
| else |
| title = "Frame"; |
| |
| rate = iwl_rate_index_from_plcp(rate_sym); |
| if (rate == -1) |
| rate = 0; |
| else |
| rate = iwl_rates[rate].ieee / 2; |
| |
| /* print frame summary. |
| * MAC addresses show just the last byte (for brevity), |
| * but you can hack it to show more, if you'd like to. */ |
| if (dataframe) |
| IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, " |
| "len=%u, rssi=%d, chnl=%d, rate=%u, \n", |
| title, fc, header->addr1[5], |
| length, rssi, channel, rate); |
| else { |
| /* src/dst addresses assume managed mode */ |
| IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, " |
| "src=0x%02x, rssi=%u, tim=%lu usec, " |
| "phy=0x%02x, chnl=%d\n", |
| title, fc, header->addr1[5], |
| header->addr3[5], rssi, |
| tsf_low - priv->scan_start_tsf, |
| phy_flags, channel); |
| } |
| } |
| if (print_dump) |
| iwl_print_hex_dump(IWL_DL_RX, data, length); |
| } |
| #endif |
| |
| static void iwl_unset_hw_setting(struct iwl_priv *priv) |
| { |
| if (priv->hw_setting.shared_virt) |
| pci_free_consistent(priv->pci_dev, |
| sizeof(struct iwl_shared), |
| priv->hw_setting.shared_virt, |
| priv->hw_setting.shared_phys); |
| } |
| |
| /** |
| * iwl_supported_rate_to_ie - fill in the supported rate in IE field |
| * |
| * return : set the bit for each supported rate insert in ie |
| */ |
| static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate, |
| u16 basic_rate, int *left) |
| { |
| u16 ret_rates = 0, bit; |
| int i; |
| u8 *cnt = ie; |
| u8 *rates = ie + 1; |
| |
| for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) { |
| if (bit & supported_rate) { |
| ret_rates |= bit; |
| rates[*cnt] = iwl_rates[i].ieee | |
| ((bit & basic_rate) ? 0x80 : 0x00); |
| (*cnt)++; |
| (*left)--; |
| if ((*left <= 0) || |
| (*cnt >= IWL_SUPPORTED_RATES_IE_LEN)) |
| break; |
| } |
| } |
| |
| return ret_rates; |
| } |
| |
| /** |
| * iwl_fill_probe_req - fill in all required fields and IE for probe request |
| */ |
| static u16 iwl_fill_probe_req(struct iwl_priv *priv, |
| struct ieee80211_mgmt *frame, |
| int left, int is_direct) |
| { |
| int len = 0; |
| u8 *pos = NULL; |
| u16 active_rates, ret_rates, cck_rates; |
| |
| /* Make sure there is enough space for the probe request, |
| * two mandatory IEs and the data */ |
| left -= 24; |
| if (left < 0) |
| return 0; |
| len += 24; |
| |
| frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
| memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN); |
| memcpy(frame->sa, priv->mac_addr, ETH_ALEN); |
| memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN); |
| frame->seq_ctrl = 0; |
| |
| /* fill in our indirect SSID IE */ |
| /* ...next IE... */ |
| |
| left -= 2; |
| if (left < 0) |
| return 0; |
| len += 2; |
| pos = &(frame->u.probe_req.variable[0]); |
| *pos++ = WLAN_EID_SSID; |
| *pos++ = 0; |
| |
| /* fill in our direct SSID IE... */ |
| if (is_direct) { |
| /* ...next IE... */ |
| left -= 2 + priv->essid_len; |
| if (left < 0) |
| return 0; |
| /* ... fill it in... */ |
| *pos++ = WLAN_EID_SSID; |
| *pos++ = priv->essid_len; |
| memcpy(pos, priv->essid, priv->essid_len); |
| pos += priv->essid_len; |
| len += 2 + priv->essid_len; |
| } |
| |
| /* fill in supported rate */ |
| /* ...next IE... */ |
| left -= 2; |
| if (left < 0) |
| return 0; |
| |
| /* ... fill it in... */ |
| *pos++ = WLAN_EID_SUPP_RATES; |
| *pos = 0; |
| |
| priv->active_rate = priv->rates_mask; |
| active_rates = priv->active_rate; |
| priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; |
| |
| cck_rates = IWL_CCK_RATES_MASK & active_rates; |
| ret_rates = iwl_supported_rate_to_ie(pos, cck_rates, |
| priv->active_rate_basic, &left); |
| active_rates &= ~ret_rates; |
| |
| ret_rates = iwl_supported_rate_to_ie(pos, active_rates, |
| priv->active_rate_basic, &left); |
| active_rates &= ~ret_rates; |
| |
| len += 2 + *pos; |
| pos += (*pos) + 1; |
| if (active_rates == 0) |
| goto fill_end; |
| |
| /* fill in supported extended rate */ |
| /* ...next IE... */ |
| left -= 2; |
| if (left < 0) |
| return 0; |
| /* ... fill it in... */ |
| *pos++ = WLAN_EID_EXT_SUPP_RATES; |
| *pos = 0; |
| iwl_supported_rate_to_ie(pos, active_rates, |
| priv->active_rate_basic, &left); |
| if (*pos > 0) |
| len += 2 + *pos; |
| |
| fill_end: |
| return (u16)len; |
| } |
| |
| /* |
| * QoS support |
| */ |
| #ifdef CONFIG_IWLWIFI_QOS |
| static int iwl_send_qos_params_command(struct iwl_priv *priv, |
| struct iwl_qosparam_cmd *qos) |
| { |
| |
| return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM, |
| sizeof(struct iwl_qosparam_cmd), qos); |
| } |
| |
| static void iwl_reset_qos(struct iwl_priv *priv) |
| { |
| u16 cw_min = 15; |
| u16 cw_max = 1023; |
| u8 aifs = 2; |
| u8 is_legacy = 0; |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->qos_data.qos_active = 0; |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) { |
| if (priv->qos_data.qos_enable) |
| priv->qos_data.qos_active = 1; |
| if (!(priv->active_rate & 0xfff0)) { |
| cw_min = 31; |
| is_legacy = 1; |
| } |
| } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { |
| if (priv->qos_data.qos_enable) |
| priv->qos_data.qos_active = 1; |
| } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) { |
| cw_min = 31; |
| is_legacy = 1; |
| } |
| |
| if (priv->qos_data.qos_active) |
| aifs = 3; |
| |
| priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min); |
| priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max); |
| priv->qos_data.def_qos_parm.ac[0].aifsn = aifs; |
| priv->qos_data.def_qos_parm.ac[0].edca_txop = 0; |
| priv->qos_data.def_qos_parm.ac[0].reserved1 = 0; |
| |
| if (priv->qos_data.qos_active) { |
| i = 1; |
| priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min); |
| priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max); |
| priv->qos_data.def_qos_parm.ac[i].aifsn = 7; |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; |
| priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; |
| |
| i = 2; |
| priv->qos_data.def_qos_parm.ac[i].cw_min = |
| cpu_to_le16((cw_min + 1) / 2 - 1); |
| priv->qos_data.def_qos_parm.ac[i].cw_max = |
| cpu_to_le16(cw_max); |
| priv->qos_data.def_qos_parm.ac[i].aifsn = 2; |
| if (is_legacy) |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = |
| cpu_to_le16(6016); |
| else |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = |
| cpu_to_le16(3008); |
| priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; |
| |
| i = 3; |
| priv->qos_data.def_qos_parm.ac[i].cw_min = |
| cpu_to_le16((cw_min + 1) / 4 - 1); |
| priv->qos_data.def_qos_parm.ac[i].cw_max = |
| cpu_to_le16((cw_max + 1) / 2 - 1); |
| priv->qos_data.def_qos_parm.ac[i].aifsn = 2; |
| priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; |
| if (is_legacy) |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = |
| cpu_to_le16(3264); |
| else |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = |
| cpu_to_le16(1504); |
| } else { |
| for (i = 1; i < 4; i++) { |
| priv->qos_data.def_qos_parm.ac[i].cw_min = |
| cpu_to_le16(cw_min); |
| priv->qos_data.def_qos_parm.ac[i].cw_max = |
| cpu_to_le16(cw_max); |
| priv->qos_data.def_qos_parm.ac[i].aifsn = aifs; |
| priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; |
| priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; |
| } |
| } |
| IWL_DEBUG_QOS("set QoS to default \n"); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static void iwl_activate_qos(struct iwl_priv *priv, u8 force) |
| { |
| unsigned long flags; |
| |
| if (priv == NULL) |
| return; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (!priv->qos_data.qos_enable) |
| return; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->qos_data.def_qos_parm.qos_flags = 0; |
| |
| if (priv->qos_data.qos_cap.q_AP.queue_request && |
| !priv->qos_data.qos_cap.q_AP.txop_request) |
| priv->qos_data.def_qos_parm.qos_flags |= |
| QOS_PARAM_FLG_TXOP_TYPE_MSK; |
| |
| if (priv->qos_data.qos_active) |
| priv->qos_data.def_qos_parm.qos_flags |= |
| QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (force || iwl_is_associated(priv)) { |
| IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n", |
| priv->qos_data.qos_active); |
| |
| iwl_send_qos_params_command(priv, |
| &(priv->qos_data.def_qos_parm)); |
| } |
| } |
| |
| #endif /* CONFIG_IWLWIFI_QOS */ |
| /* |
| * Power management (not Tx power!) functions |
| */ |
| #define MSEC_TO_USEC 1024 |
| |
| #define NOSLP __constant_cpu_to_le32(0) |
| #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK |
| #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC) |
| #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \ |
| __constant_cpu_to_le32(X1), \ |
| __constant_cpu_to_le32(X2), \ |
| __constant_cpu_to_le32(X3), \ |
| __constant_cpu_to_le32(X4)} |
| |
| |
| /* default power management (not Tx power) table values */ |
| /* for tim 0-10 */ |
| static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = { |
| {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
| {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0}, |
| {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0}, |
| {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0}, |
| {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1}, |
| {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1} |
| }; |
| |
| /* for tim > 10 */ |
| static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = { |
| {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0}, |
| {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), |
| SLP_VEC(1, 2, 3, 4, 0xFF)}, 0}, |
| {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), |
| SLP_VEC(2, 4, 6, 7, 0xFF)}, 0}, |
| {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), |
| SLP_VEC(2, 6, 9, 9, 0xFF)}, 0}, |
| {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, |
| {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), |
| SLP_VEC(4, 7, 10, 10, 0xFF)}, 0} |
| }; |
| |
| int iwl_power_init_handle(struct iwl_priv *priv) |
| { |
| int rc = 0, i; |
| struct iwl_power_mgr *pow_data; |
| int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC; |
| u16 pci_pm; |
| |
| IWL_DEBUG_POWER("Initialize power \n"); |
| |
| pow_data = &(priv->power_data); |
| |
| memset(pow_data, 0, sizeof(*pow_data)); |
| |
| pow_data->active_index = IWL_POWER_RANGE_0; |
| pow_data->dtim_val = 0xffff; |
| |
| memcpy(&pow_data->pwr_range_0[0], &range_0[0], size); |
| memcpy(&pow_data->pwr_range_1[0], &range_1[0], size); |
| |
| rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm); |
| if (rc != 0) |
| return 0; |
| else { |
| struct iwl_powertable_cmd *cmd; |
| |
| IWL_DEBUG_POWER("adjust power command flags\n"); |
| |
| for (i = 0; i < IWL_POWER_AC; i++) { |
| cmd = &pow_data->pwr_range_0[i].cmd; |
| |
| if (pci_pm & 0x1) |
| cmd->flags &= ~IWL_POWER_PCI_PM_MSK; |
| else |
| cmd->flags |= IWL_POWER_PCI_PM_MSK; |
| } |
| } |
| return rc; |
| } |
| |
| static int iwl_update_power_cmd(struct iwl_priv *priv, |
| struct iwl_powertable_cmd *cmd, u32 mode) |
| { |
| int rc = 0, i; |
| u8 skip; |
| u32 max_sleep = 0; |
| struct iwl_power_vec_entry *range; |
| u8 period = 0; |
| struct iwl_power_mgr *pow_data; |
| |
| if (mode > IWL_POWER_INDEX_5) { |
| IWL_DEBUG_POWER("Error invalid power mode \n"); |
| return -1; |
| } |
| pow_data = &(priv->power_data); |
| |
| if (pow_data->active_index == IWL_POWER_RANGE_0) |
| range = &pow_data->pwr_range_0[0]; |
| else |
| range = &pow_data->pwr_range_1[1]; |
| |
| memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd)); |
| |
| #ifdef IWL_MAC80211_DISABLE |
| if (priv->assoc_network != NULL) { |
| unsigned long flags; |
| |
| period = priv->assoc_network->tim.tim_period; |
| } |
| #endif /*IWL_MAC80211_DISABLE */ |
| skip = range[mode].no_dtim; |
| |
| if (period == 0) { |
| period = 1; |
| skip = 0; |
| } |
| |
| if (skip == 0) { |
| max_sleep = period; |
| cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; |
| } else { |
| __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]; |
| max_sleep = (le32_to_cpu(slp_itrvl) / period) * period; |
| cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK; |
| } |
| |
| for (i = 0; i < IWL_POWER_VEC_SIZE; i++) { |
| if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) |
| cmd->sleep_interval[i] = cpu_to_le32(max_sleep); |
| } |
| |
| IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags); |
| IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); |
| IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); |
| IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", |
| le32_to_cpu(cmd->sleep_interval[0]), |
| le32_to_cpu(cmd->sleep_interval[1]), |
| le32_to_cpu(cmd->sleep_interval[2]), |
| le32_to_cpu(cmd->sleep_interval[3]), |
| le32_to_cpu(cmd->sleep_interval[4])); |
| |
| return rc; |
| } |
| |
| static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode) |
| { |
| u32 final_mode = mode; |
| int rc; |
| struct iwl_powertable_cmd cmd; |
| |
| /* If on battery, set to 3, |
| * if plugged into AC power, set to CAM ("continuosly aware mode"), |
| * else user level */ |
| switch (mode) { |
| case IWL_POWER_BATTERY: |
| final_mode = IWL_POWER_INDEX_3; |
| break; |
| case IWL_POWER_AC: |
| final_mode = IWL_POWER_MODE_CAM; |
| break; |
| default: |
| final_mode = mode; |
| break; |
| } |
| |
| iwl_update_power_cmd(priv, &cmd, final_mode); |
| |
| rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd); |
| |
| if (final_mode == IWL_POWER_MODE_CAM) |
| clear_bit(STATUS_POWER_PMI, &priv->status); |
| else |
| set_bit(STATUS_POWER_PMI, &priv->status); |
| |
| return rc; |
| } |
| |
| int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) |
| { |
| /* Filter incoming packets to determine if they are targeted toward |
| * this network, discarding packets coming from ourselves */ |
| switch (priv->iw_mode) { |
| case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */ |
| /* packets from our adapter are dropped (echo) */ |
| if (!compare_ether_addr(header->addr2, priv->mac_addr)) |
| return 0; |
| /* {broad,multi}cast packets to our IBSS go through */ |
| if (is_multicast_ether_addr(header->addr1)) |
| return !compare_ether_addr(header->addr3, priv->bssid); |
| /* packets to our adapter go through */ |
| return !compare_ether_addr(header->addr1, priv->mac_addr); |
| case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */ |
| /* packets from our adapter are dropped (echo) */ |
| if (!compare_ether_addr(header->addr3, priv->mac_addr)) |
| return 0; |
| /* {broad,multi}cast packets to our BSS go through */ |
| if (is_multicast_ether_addr(header->addr1)) |
| return !compare_ether_addr(header->addr2, priv->bssid); |
| /* packets to our adapter go through */ |
| return !compare_ether_addr(header->addr1, priv->mac_addr); |
| } |
| |
| return 1; |
| } |
| |
| #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x |
| |
| const char *iwl_get_tx_fail_reason(u32 status) |
| { |
| switch (status & TX_STATUS_MSK) { |
| case TX_STATUS_SUCCESS: |
| return "SUCCESS"; |
| TX_STATUS_ENTRY(SHORT_LIMIT); |
| TX_STATUS_ENTRY(LONG_LIMIT); |
| TX_STATUS_ENTRY(FIFO_UNDERRUN); |
| TX_STATUS_ENTRY(MGMNT_ABORT); |
| TX_STATUS_ENTRY(NEXT_FRAG); |
| TX_STATUS_ENTRY(LIFE_EXPIRE); |
| TX_STATUS_ENTRY(DEST_PS); |
| TX_STATUS_ENTRY(ABORTED); |
| TX_STATUS_ENTRY(BT_RETRY); |
| TX_STATUS_ENTRY(STA_INVALID); |
| TX_STATUS_ENTRY(FRAG_DROPPED); |
| TX_STATUS_ENTRY(TID_DISABLE); |
| TX_STATUS_ENTRY(FRAME_FLUSHED); |
| TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); |
| TX_STATUS_ENTRY(TX_LOCKED); |
| TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); |
| } |
| |
| return "UNKNOWN"; |
| } |
| |
| /** |
| * iwl_scan_cancel - Cancel any currently executing HW scan |
| * |
| * NOTE: priv->mutex is not required before calling this function |
| */ |
| static int iwl_scan_cancel(struct iwl_priv *priv) |
| { |
| if (!test_bit(STATUS_SCAN_HW, &priv->status)) { |
| clear_bit(STATUS_SCANNING, &priv->status); |
| return 0; |
| } |
| |
| if (test_bit(STATUS_SCANNING, &priv->status)) { |
| if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG_SCAN("Queuing scan abort.\n"); |
| set_bit(STATUS_SCAN_ABORTING, &priv->status); |
| queue_work(priv->workqueue, &priv->abort_scan); |
| |
| } else |
| IWL_DEBUG_SCAN("Scan abort already in progress.\n"); |
| |
| return test_bit(STATUS_SCANNING, &priv->status); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_scan_cancel_timeout - Cancel any currently executing HW scan |
| * @ms: amount of time to wait (in milliseconds) for scan to abort |
| * |
| * NOTE: priv->mutex must be held before calling this function |
| */ |
| static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) |
| { |
| unsigned long now = jiffies; |
| int ret; |
| |
| ret = iwl_scan_cancel(priv); |
| if (ret && ms) { |
| mutex_unlock(&priv->mutex); |
| while (!time_after(jiffies, now + msecs_to_jiffies(ms)) && |
| test_bit(STATUS_SCANNING, &priv->status)) |
| msleep(1); |
| mutex_lock(&priv->mutex); |
| |
| return test_bit(STATUS_SCANNING, &priv->status); |
| } |
| |
| return ret; |
| } |
| |
| static void iwl_sequence_reset(struct iwl_priv *priv) |
| { |
| /* Reset ieee stats */ |
| |
| /* We don't reset the net_device_stats (ieee->stats) on |
| * re-association */ |
| |
| priv->last_seq_num = -1; |
| priv->last_frag_num = -1; |
| priv->last_packet_time = 0; |
| |
| iwl_scan_cancel(priv); |
| } |
| |
| #define MAX_UCODE_BEACON_INTERVAL 1024 |
| #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA) |
| |
| static __le16 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; |
| |
| return cpu_to_le16(new_val); |
| } |
| |
| static void iwl_setup_rxon_timing(struct iwl_priv *priv) |
| { |
| u64 interval_tm_unit; |
| u64 tsf, result; |
| 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.dw[1] = cpu_to_le32(priv->timestamp1); |
| priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0); |
| |
| priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL; |
| |
| tsf = priv->timestamp1; |
| tsf = ((tsf << 32) | priv->timestamp0); |
| |
| beacon_int = priv->beacon_int; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_STA) { |
| if (beacon_int == 0) { |
| priv->rxon_timing.beacon_interval = cpu_to_le16(100); |
| priv->rxon_timing.beacon_init_val = cpu_to_le32(102400); |
| } else { |
| priv->rxon_timing.beacon_interval = |
| cpu_to_le16(beacon_int); |
| priv->rxon_timing.beacon_interval = |
| iwl_adjust_beacon_interval( |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| } |
| |
| priv->rxon_timing.atim_window = 0; |
| } else { |
| priv->rxon_timing.beacon_interval = |
| 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; |
| } |
| |
| interval_tm_unit = |
| (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024); |
| result = do_div(tsf, interval_tm_unit); |
| priv->rxon_timing.beacon_init_val = |
| cpu_to_le32((u32) ((u64) interval_tm_unit - result)); |
| |
| IWL_DEBUG_ASSOC |
| ("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)); |
| } |
| |
| static int iwl_scan_initiate(struct iwl_priv *priv) |
| { |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { |
| IWL_ERROR("APs don't scan.\n"); |
| return 0; |
| } |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_SCAN("Aborting scan due to not ready.\n"); |
| return -EIO; |
| } |
| |
| if (test_bit(STATUS_SCANNING, &priv->status)) { |
| IWL_DEBUG_SCAN("Scan already in progress.\n"); |
| return -EAGAIN; |
| } |
| |
| if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG_SCAN("Scan request while abort pending. " |
| "Queuing.\n"); |
| return -EAGAIN; |
| } |
| |
| IWL_DEBUG_INFO("Starting scan...\n"); |
| priv->scan_bands = 2; |
| set_bit(STATUS_SCANNING, &priv->status); |
| priv->scan_start = jiffies; |
| priv->scan_pass_start = priv->scan_start; |
| |
| queue_work(priv->workqueue, &priv->request_scan); |
| |
| return 0; |
| } |
| |
| static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) |
| { |
| struct iwl_rxon_cmd *rxon = &priv->staging_rxon; |
| |
| if (hw_decrypt) |
| rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; |
| else |
| rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; |
| |
| return 0; |
| } |
| |
| static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode) |
| { |
| if (phymode == MODE_IEEE80211A) { |
| priv->staging_rxon.flags &= |
| ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
| | RXON_FLG_CCK_MSK); |
| priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| } else { |
| /* Copied from iwl_bg_post_associate() */ |
| 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 == IEEE80211_IF_TYPE_IBSS) |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; |
| priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK; |
| priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK; |
| } |
| } |
| |
| /* |
| * initilize rxon structure with default values fromm eeprom |
| */ |
| static void iwl_connection_init_rx_config(struct iwl_priv *priv) |
| { |
| const struct iwl_channel_info *ch_info; |
| |
| memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon)); |
| |
| switch (priv->iw_mode) { |
| case IEEE80211_IF_TYPE_AP: |
| priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP; |
| break; |
| |
| case IEEE80211_IF_TYPE_STA: |
| priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS; |
| priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; |
| break; |
| |
| case IEEE80211_IF_TYPE_IBSS: |
| priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS; |
| priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK; |
| priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK | |
| RXON_FILTER_ACCEPT_GRP_MSK; |
| break; |
| |
| case IEEE80211_IF_TYPE_MNTR: |
| priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER; |
| priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK | |
| RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK; |
| break; |
| } |
| |
| #if 0 |
| /* TODO: Figure out when short_preamble would be set and cache from |
| * that */ |
| if (!hw_to_local(priv->hw)->short_preamble) |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| #endif |
| |
| ch_info = iwl_get_channel_info(priv, priv->phymode, |
| le16_to_cpu(priv->staging_rxon.channel)); |
| |
| if (!ch_info) |
| ch_info = &priv->channel_info[0]; |
| |
| /* |
| * in some case A channels are all non IBSS |
| * in this case force B/G channel |
| */ |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && |
| !(is_channel_ibss(ch_info))) |
| ch_info = &priv->channel_info[0]; |
| |
| priv->staging_rxon.channel = cpu_to_le16(ch_info->channel); |
| if (is_channel_a_band(ch_info)) |
| priv->phymode = MODE_IEEE80211A; |
| else |
| priv->phymode = MODE_IEEE80211G; |
| |
| iwl_set_flags_for_phymode(priv, priv->phymode); |
| |
| priv->staging_rxon.ofdm_basic_rates = |
| (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| priv->staging_rxon.cck_basic_rates = |
| (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| } |
| |
| static int iwl_set_mode(struct iwl_priv *priv, int mode) |
| { |
| if (!iwl_is_ready_rf(priv)) |
| return -EAGAIN; |
| |
| if (mode == IEEE80211_IF_TYPE_IBSS) { |
| const struct iwl_channel_info *ch_info; |
| |
| ch_info = iwl_get_channel_info(priv, |
| priv->phymode, |
| le16_to_cpu(priv->staging_rxon.channel)); |
| |
| if (!ch_info || !is_channel_ibss(ch_info)) { |
| IWL_ERROR("channel %d not IBSS channel\n", |
| le16_to_cpu(priv->staging_rxon.channel)); |
| return -EINVAL; |
| } |
| } |
| |
| cancel_delayed_work(&priv->scan_check); |
| if (iwl_scan_cancel_timeout(priv, 100)) { |
| IWL_WARNING("Aborted scan still in progress after 100ms\n"); |
| IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); |
| return -EAGAIN; |
| } |
| |
| priv->iw_mode = mode; |
| |
| iwl_connection_init_rx_config(priv); |
| memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
| |
| iwl_clear_stations_table(priv); |
| |
| iwl_commit_rxon(priv); |
| |
| return 0; |
| } |
| |
| static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv, |
| struct ieee80211_tx_control *ctl, |
| struct iwl_cmd *cmd, |
| struct sk_buff *skb_frag, |
| int last_frag) |
| { |
| struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo; |
| |
| switch (keyinfo->alg) { |
| case ALG_CCMP: |
| cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM; |
| memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen); |
| IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); |
| break; |
| |
| case ALG_TKIP: |
| #if 0 |
| cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP; |
| |
| if (last_frag) |
| memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8, |
| 8); |
| else |
| memset(cmd->cmd.tx.tkip_mic.byte, 0, 8); |
| #endif |
| break; |
| |
| case ALG_WEP: |
| cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP | |
| (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT; |
| |
| if (keyinfo->keylen == 13) |
| cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; |
| |
| memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen); |
| |
| IWL_DEBUG_TX("Configuring packet for WEP encryption " |
| "with key %d\n", ctl->key_idx); |
| break; |
| |
| default: |
| printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); |
| break; |
| } |
| } |
| |
| /* |
| * handle build REPLY_TX command notification. |
| */ |
| static void iwl_build_tx_cmd_basic(struct iwl_priv *priv, |
| struct iwl_cmd *cmd, |
| struct ieee80211_tx_control *ctrl, |
| struct ieee80211_hdr *hdr, |
| int is_unicast, u8 std_id) |
| { |
| __le16 *qc; |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| __le32 tx_flags = cmd->cmd.tx.tx_flags; |
| |
| cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) { |
| tx_flags |= TX_CMD_FLG_ACK_MSK; |
| if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| if (ieee80211_is_probe_response(fc) && |
| !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) |
| tx_flags |= TX_CMD_FLG_TSF_MSK; |
| } else { |
| tx_flags &= (~TX_CMD_FLG_ACK_MSK); |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| } |
| |
| cmd->cmd.tx.sta_id = std_id; |
| if (ieee80211_get_morefrag(hdr)) |
| tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; |
| |
| qc = ieee80211_get_qos_ctrl(hdr); |
| if (qc) { |
| cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf); |
| tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; |
| } else |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| |
| if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) { |
| tx_flags |= TX_CMD_FLG_RTS_MSK; |
| tx_flags &= ~TX_CMD_FLG_CTS_MSK; |
| } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { |
| tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| tx_flags |= TX_CMD_FLG_CTS_MSK; |
| } |
| |
| if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) |
| tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| |
| tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); |
| if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { |
| if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ || |
| (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ) |
| cmd->cmd.tx.timeout.pm_frame_timeout = |
| cpu_to_le16(3); |
| else |
| cmd->cmd.tx.timeout.pm_frame_timeout = |
| cpu_to_le16(2); |
| } else |
| cmd->cmd.tx.timeout.pm_frame_timeout = 0; |
| |
| cmd->cmd.tx.driver_txop = 0; |
| cmd->cmd.tx.tx_flags = tx_flags; |
| cmd->cmd.tx.next_frame_len = 0; |
| } |
| |
| static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) |
| { |
| int sta_id; |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| |
| /* If this frame is broadcast or not data then use the broadcast |
| * station id */ |
| if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || |
| is_multicast_ether_addr(hdr->addr1)) |
| return priv->hw_setting.bcast_sta_id; |
| |
| switch (priv->iw_mode) { |
| |
| /* If this frame is part of a BSS network (we're a station), then |
| * we use the AP's station id */ |
| case IEEE80211_IF_TYPE_STA: |
| return IWL_AP_ID; |
| |
| /* If we are an AP, then find the station, or use BCAST */ |
| case IEEE80211_IF_TYPE_AP: |
| sta_id = iwl_hw_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| return priv->hw_setting.bcast_sta_id; |
| |
| /* If this frame is part of a IBSS network, then we use the |
| * target specific station id */ |
| case IEEE80211_IF_TYPE_IBSS: { |
| DECLARE_MAC_BUF(mac); |
| |
| sta_id = iwl_hw_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| |
| sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC); |
| |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| |
| IWL_DEBUG_DROP("Station %s not in station map. " |
| "Defaulting to broadcast...\n", |
| print_mac(mac, hdr->addr1)); |
| iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
| return priv->hw_setting.bcast_sta_id; |
| } |
| default: |
| IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode); |
| return priv->hw_setting.bcast_sta_id; |
| } |
| } |
| |
| /* |
| * start REPLY_TX command process |
| */ |
| static int iwl_tx_skb(struct iwl_priv *priv, |
| struct sk_buff *skb, struct ieee80211_tx_control *ctl) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
| struct iwl_tfd_frame *tfd; |
| u32 *control_flags; |
| int txq_id = ctl->queue; |
| struct iwl_tx_queue *txq = NULL; |
| struct iwl_queue *q = NULL; |
| dma_addr_t phys_addr; |
| dma_addr_t txcmd_phys; |
| struct iwl_cmd *out_cmd = NULL; |
| u16 len, idx, len_org; |
| u8 id, hdr_len, unicast; |
| u8 sta_id; |
| u16 seq_number = 0; |
| u16 fc; |
| __le16 *qc; |
| u8 wait_write_ptr = 0; |
| unsigned long flags; |
| int rc; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_DROP("Dropping - RF KILL\n"); |
| goto drop_unlock; |
| } |
| |
| if (!priv->interface_id) { |
| IWL_DEBUG_DROP("Dropping - !priv->interface_id\n"); |
| goto drop_unlock; |
| } |
| |
| if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) { |
| IWL_ERROR("ERROR: No TX rate available.\n"); |
| goto drop_unlock; |
| } |
| |
| unicast = !is_multicast_ether_addr(hdr->addr1); |
| id = 0; |
| |
| fc = le16_to_cpu(hdr->frame_control); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (ieee80211_is_auth(fc)) |
| IWL_DEBUG_TX("Sending AUTH frame\n"); |
| else if (ieee80211_is_assoc_request(fc)) |
| IWL_DEBUG_TX("Sending ASSOC frame\n"); |
| else if (ieee80211_is_reassoc_request(fc)) |
| IWL_DEBUG_TX("Sending REASSOC frame\n"); |
| #endif |
| |
| if (!iwl_is_associated(priv) && |
| ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) { |
| IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); |
| goto drop_unlock; |
| } |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| hdr_len = ieee80211_get_hdrlen(fc); |
| sta_id = iwl_get_sta_id(priv, hdr); |
| if (sta_id == IWL_INVALID_STATION) { |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n", |
| print_mac(mac, hdr->addr1)); |
| goto drop; |
| } |
| |
| IWL_DEBUG_RATE("station Id %d\n", sta_id); |
| |
| qc = ieee80211_get_qos_ctrl(hdr); |
| if (qc) { |
| u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); |
| seq_number = priv->stations[sta_id].tid[tid].seq_number & |
| IEEE80211_SCTL_SEQ; |
| hdr->seq_ctrl = cpu_to_le16(seq_number) | |
| (hdr->seq_ctrl & |
| __constant_cpu_to_le16(IEEE80211_SCTL_FRAG)); |
| seq_number += 0x10; |
| } |
| txq = &priv->txq[txq_id]; |
| q = &txq->q; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| tfd = &txq->bd[q->first_empty]; |
| memset(tfd, 0, sizeof(*tfd)); |
| control_flags = (u32 *) tfd; |
| idx = get_cmd_index(q, q->first_empty, 0); |
| |
| memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info)); |
| txq->txb[q->first_empty].skb[0] = skb; |
| memcpy(&(txq->txb[q->first_empty].status.control), |
| ctl, sizeof(struct ieee80211_tx_control)); |
| out_cmd = &txq->cmd[idx]; |
| memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); |
| memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx)); |
| out_cmd->hdr.cmd = REPLY_TX; |
| out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | |
| INDEX_TO_SEQ(q->first_empty))); |
| /* copy frags header */ |
| memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len); |
| |
| /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */ |
| len = priv->hw_setting.tx_cmd_len + |
| sizeof(struct iwl_cmd_header) + hdr_len; |
| |
| len_org = len; |
| len = (len + 3) & ~3; |
| |
| if (len_org != len) |
| len_org = 1; |
| else |
| len_org = 0; |
| |
| txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + |
| offsetof(struct iwl_cmd, hdr); |
| |
| iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); |
| |
| if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) |
| iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0); |
| |
| /* 802.11 null functions have no payload... */ |
| len = skb->len - hdr_len; |
| if (len) { |
| phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, |
| len, PCI_DMA_TODEVICE); |
| iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); |
| } |
| |
| /* If there is no payload, then only one TFD is used */ |
| if (!len) |
| *control_flags = TFD_CTL_COUNT_SET(1); |
| else |
| *control_flags = TFD_CTL_COUNT_SET(2) | |
| TFD_CTL_PAD_SET(U32_PAD(len)); |
| |
| len = (u16)skb->len; |
| out_cmd->cmd.tx.len = cpu_to_le16(len); |
| |
| /* TODO need this for burst mode later on */ |
| iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id); |
| |
| /* set is_hcca to 0; it probably will never be implemented */ |
| iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0); |
| |
| out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; |
| out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; |
| |
| if (!ieee80211_get_morefrag(hdr)) { |
| txq->need_update = 1; |
| if (qc) { |
| u8 tid = (u8)(le16_to_cpu(*qc) & 0xf); |
| priv->stations[sta_id].tid[tid].seq_number = seq_number; |
| } |
| } else { |
| wait_write_ptr = 1; |
| txq->need_update = 0; |
| } |
| |
| iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload, |
| sizeof(out_cmd->cmd.tx)); |
| |
| iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr, |
| ieee80211_get_hdrlen(fc)); |
| |
| q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd); |
| rc = iwl_tx_queue_update_write_ptr(priv, txq); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (rc) |
| return rc; |
| |
| if ((iwl_queue_space(q) < q->high_mark) |
| && priv->mac80211_registered) { |
| if (wait_write_ptr) { |
| spin_lock_irqsave(&priv->lock, flags); |
| txq->need_update = 1; |
| iwl_tx_queue_update_write_ptr(priv, txq); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| ieee80211_stop_queue(priv->hw, ctl->queue); |
| } |
| |
| return 0; |
| |
| drop_unlock: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| drop: |
| return -1; |
| } |
| |
| static void iwl_set_rate(struct iwl_priv *priv) |
| { |
| const struct ieee80211_hw_mode *hw = NULL; |
| struct ieee80211_rate *rate; |
| int i; |
| |
| hw = iwl_get_hw_mode(priv, priv->phymode); |
| if (!hw) { |
| IWL_ERROR("Failed to set rate: unable to get hw mode\n"); |
| return; |
| } |
| |
| priv->active_rate = 0; |
| priv->active_rate_basic = 0; |
| |
| IWL_DEBUG_RATE("Setting rates for 802.11%c\n", |
| hw->mode == MODE_IEEE80211A ? |
| 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g')); |
| |
| for (i = 0; i < hw->num_rates; i++) { |
| rate = &(hw->rates[i]); |
| if ((rate->val < IWL_RATE_COUNT) && |
| (rate->flags & IEEE80211_RATE_SUPPORTED)) { |
| IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n", |
| rate->val, iwl_rates[rate->val].plcp, |
| (rate->flags & IEEE80211_RATE_BASIC) ? |
| "*" : ""); |
| priv->active_rate |= (1 << rate->val); |
| if (rate->flags & IEEE80211_RATE_BASIC) |
| priv->active_rate_basic |= (1 << rate->val); |
| } else |
| IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n", |
| rate->val, iwl_rates[rate->val].plcp); |
| } |
| |
| IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n", |
| priv->active_rate, priv->active_rate_basic); |
| |
| /* |
| * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK) |
| * otherwise set it to the default of all CCK rates and 6, 12, 24 for |
| * OFDM |
| */ |
| if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK) |
| priv->staging_rxon.cck_basic_rates = |
| ((priv->active_rate_basic & |
| IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF; |
| else |
| priv->staging_rxon.cck_basic_rates = |
| (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| |
| if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK) |
| priv->staging_rxon.ofdm_basic_rates = |
| ((priv->active_rate_basic & |
| (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >> |
| IWL_FIRST_OFDM_RATE) & 0xFF; |
| else |
| priv->staging_rxon.ofdm_basic_rates = |
| (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| } |
| |
| static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio) |
| { |
| unsigned long flags; |
| |
| if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status)) |
| return; |
| |
| IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n", |
| disable_radio ? "OFF" : "ON"); |
| |
| if (disable_radio) { |
| iwl_scan_cancel(priv); |
| /* FIXME: This is a workaround for AP */ |
| if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_SW_BIT_RFKILL); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0); |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| } |
| return; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| |
| clear_bit(STATUS_RF_KILL_SW, &priv->status); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| /* wake up ucode */ |
| msleep(10); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_read32(priv, CSR_UCODE_DRV_GP1); |
| if (!iwl_grab_restricted_access(priv)) |
| iwl_release_restricted_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { |
| IWL_DEBUG_RF_KILL("Can not turn radio back on - " |
| "disabled by HW switch\n"); |
| return; |
| } |
| |
| queue_work(priv->workqueue, &priv->restart); |
| return; |
| } |
| |
| void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb, |
| u32 decrypt_res, struct ieee80211_rx_status *stats) |
| { |
| u16 fc = |
| le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control); |
| |
| if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) |
| return; |
| |
| if (!(fc & IEEE80211_FCTL_PROTECTED)) |
| return; |
| |
| IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res); |
| switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { |
| case RX_RES_STATUS_SEC_TYPE_TKIP: |
| if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == |
| RX_RES_STATUS_BAD_ICV_MIC) |
| stats->flag |= RX_FLAG_MMIC_ERROR; |
| case RX_RES_STATUS_SEC_TYPE_WEP: |
| case RX_RES_STATUS_SEC_TYPE_CCMP: |
| if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == |
| RX_RES_STATUS_DECRYPT_OK) { |
| IWL_DEBUG_RX("hw decrypt successfully!!!\n"); |
| stats->flag |= RX_FLAG_DECRYPTED; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| void iwl_handle_data_packet_monitor(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb, |
| void *data, short len, |
| struct ieee80211_rx_status *stats, |
| u16 phy_flags) |
| { |
| struct iwl_rt_rx_hdr *iwl_rt; |
| |
| /* First cache any information we need before we overwrite |
| * the information provided in the skb from the hardware */ |
| s8 signal = stats->ssi; |
| s8 noise = 0; |
| int rate = stats->rate; |
| u64 tsf = stats->mactime; |
| __le16 phy_flags_hw = cpu_to_le16(phy_flags); |
| |
| /* We received data from the HW, so stop the watchdog */ |
| if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) { |
| IWL_DEBUG_DROP("Dropping too large packet in monitor\n"); |
| return; |
| } |
| |
| /* copy the frame data to write after where the radiotap header goes */ |
| iwl_rt = (void *)rxb->skb->data; |
| memmove(iwl_rt->payload, data, len); |
| |
| iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; |
| iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */ |
| |
| /* total header + data */ |
| iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt)); |
| |
| /* Set the size of the skb to the size of the frame */ |
| skb_put(rxb->skb, sizeof(*iwl_rt) + len); |
| |
| /* Big bitfield of all the fields we provide in radiotap */ |
| iwl_rt->rt_hdr.it_present = |
| cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | |
| (1 << IEEE80211_RADIOTAP_FLAGS) | |
| (1 << IEEE80211_RADIOTAP_RATE) | |
| (1 << IEEE80211_RADIOTAP_CHANNEL) | |
| (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | |
| (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | |
| (1 << IEEE80211_RADIOTAP_ANTENNA)); |
| |
| /* Zero the flags, we'll add to them as we go */ |
| iwl_rt->rt_flags = 0; |
| |
| iwl_rt->rt_tsf = cpu_to_le64(tsf); |
| |
| /* Convert to dBm */ |
| iwl_rt->rt_dbmsignal = signal; |
| iwl_rt->rt_dbmnoise = noise; |
| |
| /* Convert the channel frequency and set the flags */ |
| iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq); |
| if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) |
| iwl_rt->rt_chbitmask = |
| cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ)); |
| else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) |
| iwl_rt->rt_chbitmask = |
| cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ)); |
| else /* 802.11g */ |
| iwl_rt->rt_chbitmask = |
| cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ)); |
| |
| rate = iwl_rate_index_from_plcp(rate); |
| if (rate == -1) |
| iwl_rt->rt_rate = 0; |
| else |
| iwl_rt->rt_rate = iwl_rates[rate].ieee; |
| |
| /* antenna number */ |
| iwl_rt->rt_antenna = |
| le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; |
| |
| /* set the preamble flag if we have it */ |
| if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) |
| iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; |
| |
| IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len); |
| |
| stats->flag |= RX_FLAG_RADIOTAP; |
| ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); |
| rxb->skb = NULL; |
| } |
| |
| |
| #define IWL_PACKET_RETRY_TIME HZ |
| |
| int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header) |
| { |
| u16 sc = le16_to_cpu(header->seq_ctrl); |
| u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4; |
| u16 frag = sc & IEEE80211_SCTL_FRAG; |
| u16 *last_seq, *last_frag; |
| unsigned long *last_time; |
| |
| switch (priv->iw_mode) { |
| case IEEE80211_IF_TYPE_IBSS:{ |
| struct list_head *p; |
| struct iwl_ibss_seq *entry = NULL; |
| u8 *mac = header->addr2; |
| int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1); |
| |
| __list_for_each(p, &priv->ibss_mac_hash[index]) { |
| entry = |
| list_entry(p, struct iwl_ibss_seq, list); |
| if (!compare_ether_addr(entry->mac, mac)) |
| break; |
| } |
| if (p == &priv->ibss_mac_hash[index]) { |
| entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
| if (!entry) { |
| IWL_ERROR |
| ("Cannot malloc new mac entry\n"); |
| return 0; |
| } |
| memcpy(entry->mac, mac, ETH_ALEN); |
| entry->seq_num = seq; |
| entry->frag_num = frag; |
| entry->packet_time = jiffies; |
| list_add(&entry->list, |
| &priv->ibss_mac_hash[index]); |
| return 0; |
| } |
| last_seq = &entry->seq_num; |
| last_frag = &entry->frag_num; |
| last_time = &entry->packet_time; |
| break; |
| } |
| case IEEE80211_IF_TYPE_STA: |
| last_seq = &priv->last_seq_num; |
| last_frag = &priv->last_frag_num; |
| last_time = &priv->last_packet_time; |
| break; |
| default: |
| return 0; |
| } |
| if ((*last_seq == seq) && |
| time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) { |
| if (*last_frag == frag) |
| goto drop; |
| if (*last_frag + 1 != frag) |
| /* out-of-order fragment */ |
| goto drop; |
| } else |
| *last_seq = seq; |
| |
| *last_frag = frag; |
| *last_time = jiffies; |
| return 0; |
| |
| drop: |
| return 1; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT |
| |
| #include "iwl-spectrum.h" |
| |
| #define BEACON_TIME_MASK_LOW 0x00FFFFFF |
| #define BEACON_TIME_MASK_HIGH 0xFF000000 |
| #define TIME_UNIT 1024 |
| |
| /* |
| * extended beacon time format |
| * time in usec will be changed into a 32-bit value in 8:24 format |
| * the high 1 byte is the beacon counts |
| * the lower 3 bytes is the time in usec within one beacon interval |
| */ |
| |
| static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval) |
| { |
| u32 quot; |
| u32 rem; |
| u32 interval = beacon_interval * 1024; |
| |
| if (!interval || !usec) |
| return 0; |
| |
| quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24); |
| rem = (usec % interval) & BEACON_TIME_MASK_LOW; |
| |
| return (quot << 24) + rem; |
| } |
| |
| /* base is usually what we get from ucode with each received frame, |
| * the same as HW timer counter counting down |
| */ |
| |
| static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval) |
| { |
| u32 base_low = base & BEACON_TIME_MASK_LOW; |
| u32 addon_low = addon & BEACON_TIME_MASK_LOW; |
| u32 interval = beacon_interval * TIME_UNIT; |
| u32 res = (base & BEACON_TIME_MASK_HIGH) + |
| (addon & BEACON_TIME_MASK_HIGH); |
| |
| if (base_low > addon_low) |
| res += base_low - addon_low; |
| else if (base_low < addon_low) { |
| res += interval + base_low - addon_low; |
| res += (1 << 24); |
| } else |
| res += (1 << 24); |
| |
| return cpu_to_le32(res); |
| } |
| |
| static int iwl_get_measurement(struct iwl_priv *priv, |
| struct ieee80211_measurement_params *params, |
| u8 type) |
| { |
| struct iwl_spectrum_cmd spectrum; |
| struct iwl_rx_packet *res; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SPECTRUM_MEASUREMENT_CMD, |
| .data = (void *)&spectrum, |
| .meta.flags = CMD_WANT_SKB, |
| }; |
| u32 add_time = le64_to_cpu(params->start_time); |
| int rc; |
| int spectrum_resp_status; |
| int duration = le16_to_cpu(params->duration); |
| |
| if (iwl_is_associated(priv)) |
| add_time = |
| iwl_usecs_to_beacons( |
| le64_to_cpu(params->start_time) - priv->last_tsf, |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| |
| memset(&spectrum, 0, sizeof(spectrum)); |
| |
| spectrum.channel_count = cpu_to_le16(1); |
| spectrum.flags = |
| RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; |
| spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; |
| cmd.len = sizeof(spectrum); |
| spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); |
| |
| if (iwl_is_associated(priv)) |
| spectrum.start_time = |
| iwl_add_beacon_time(priv->last_beacon_time, |
| add_time, |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| else |
| spectrum.start_time = 0; |
| |
| spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); |
| spectrum.channels[0].channel = params->channel; |
| spectrum.channels[0].type = type; |
| if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK) |
| spectrum.flags |= RXON_FLG_BAND_24G_MSK | |
| RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK; |
| |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) |
| return rc; |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n"); |
| rc = -EIO; |
| } |
| |
| spectrum_resp_status = le16_to_cpu(res->u.spectrum.status); |
| switch (spectrum_resp_status) { |
| case 0: /* Command will be handled */ |
| if (res->u.spectrum.id != 0xff) { |
| IWL_DEBUG_INFO |
| ("Replaced existing measurement: %d\n", |
| res->u.spectrum.id); |
| priv->measurement_status &= ~MEASUREMENT_READY; |
| } |
| priv->measurement_status |= MEASUREMENT_ACTIVE; |
| rc = 0; |
| break; |
| |
| case 1: /* Command will not be handled */ |
| rc = -EAGAIN; |
| break; |
| } |
| |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return rc; |
| } |
| #endif |
| |
| static void iwl_txstatus_to_ieee(struct iwl_priv *priv, |
| struct iwl_tx_info *tx_sta) |
| { |
| |
| tx_sta->status.ack_signal = 0; |
| tx_sta->status.excessive_retries = 0; |
| tx_sta->status.queue_length = 0; |
| tx_sta->status.queue_number = 0; |
| |
| if (in_interrupt()) |
| ieee80211_tx_status_irqsafe(priv->hw, |
| tx_sta->skb[0], &(tx_sta->status)); |
| else |
| ieee80211_tx_status(priv->hw, |
| tx_sta->skb[0], &(tx_sta->status)); |
| |
| tx_sta->skb[0] = NULL; |
| } |
| |
| /** |
| * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC. |
| * |
| * When FW advances 'R' index, all entries between old and |
| * new 'R' index need to be reclaimed. As result, some free space |
| * forms. If there is enough free space (> low mark), wake Tx queue. |
| */ |
| int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) |
| { |
| struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| struct iwl_queue *q = &txq->q; |
| int nfreed = 0; |
| |
| if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) { |
| IWL_ERROR("Read index for DMA queue txq id (%d), index %d, " |
| "is out of range [0-%d] %d %d.\n", txq_id, |
| index, q->n_bd, q->first_empty, q->last_used); |
| return 0; |
| } |
| |
| for (index = iwl_queue_inc_wrap(index, q->n_bd); |
| q->last_used != index; |
| q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) { |
| if (txq_id != IWL_CMD_QUEUE_NUM) { |
| iwl_txstatus_to_ieee(priv, |
| &(txq->txb[txq->q.last_used])); |
| iwl_hw_txq_free_tfd(priv, txq); |
| } else if (nfreed > 1) { |
| IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index, |
| q->first_empty, q->last_used); |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| nfreed++; |
| } |
| |
| if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) && |
| (txq_id != IWL_CMD_QUEUE_NUM) && |
| priv->mac80211_registered) |
| ieee80211_wake_queue(priv->hw, txq_id); |
| |
| |
| return nfreed; |
| } |
| |
| static int iwl_is_tx_success(u32 status) |
| { |
| return (status & 0xFF) == 0x1; |
| } |
| |
| /****************************************************************************** |
| * |
| * Generic RX handler implementations |
| * |
| ******************************************************************************/ |
| static void iwl_rx_reply_tx(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
| int txq_id = SEQ_TO_QUEUE(sequence); |
| int index = SEQ_TO_INDEX(sequence); |
| struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| struct ieee80211_tx_status *tx_status; |
| struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
| u32 status = le32_to_cpu(tx_resp->status); |
| |
| if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) { |
| IWL_ERROR("Read index for DMA queue txq_id (%d) index %d " |
| "is out of range [0-%d] %d %d\n", txq_id, |
| index, txq->q.n_bd, txq->q.first_empty, |
| txq->q.last_used); |
| return; |
| } |
| |
| tx_status = &(txq->txb[txq->q.last_used].status); |
| |
| tx_status->retry_count = tx_resp->failure_frame; |
| tx_status->queue_number = status; |
| tx_status->queue_length = tx_resp->bt_kill_count; |
| tx_status->queue_length |= tx_resp->failure_rts; |
| |
| tx_status->flags = |
| iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0; |
| |
| tx_status->control.tx_rate = iwl_rate_index_from_plcp(tx_resp->rate); |
| |
| IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", |
| txq_id, iwl_get_tx_fail_reason(status), status, |
| tx_resp->rate, tx_resp->failure_frame); |
| |
| IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index); |
| if (index != -1) |
| iwl_tx_queue_reclaim(priv, txq_id, index); |
| |
| if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) |
| IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); |
| } |
| |
| |
| static void iwl_rx_reply_alive(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_alive_resp *palive; |
| struct delayed_work *pwork; |
| |
| palive = &pkt->u.alive_frame; |
| |
| IWL_DEBUG_INFO("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("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("Runtime Alive received.\n"); |
| memcpy(&priv->card_alive, &pkt->u.alive_frame, |
| sizeof(struct iwl_alive_resp)); |
| pwork = &priv->alive_start; |
| iwl_disable_events(priv); |
| } |
| |
| /* 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_WARNING("uCode did not respond OK.\n"); |
| } |
| |
| static void iwl_rx_reply_add_sta(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| |
| IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); |
| return; |
| } |
| |
| static void iwl_rx_reply_error(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| |
| IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) " |
| "seq 0x%04X ser 0x%08X\n", |
| le32_to_cpu(pkt->u.err_resp.error_type), |
| get_cmd_string(pkt->u.err_resp.cmd_id), |
| pkt->u.err_resp.cmd_id, |
| le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), |
| le32_to_cpu(pkt->u.err_resp.error_info)); |
| } |
| |
| #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x |
| |
| static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon; |
| struct iwl_csa_notification *csa = &(pkt->u.csa_notif); |
| IWL_DEBUG_11H("CSA notif: channel %d, status %d\n", |
| le16_to_cpu(csa->channel), le32_to_cpu(csa->status)); |
| rxon->channel = csa->channel; |
| priv->staging_rxon.channel = csa->channel; |
| } |
| |
| static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif); |
| |
| if (!report->state) { |
| IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO, |
| "Spectrum Measure Notification: Start\n"); |
| return; |
| } |
| |
| memcpy(&priv->measure_report, report, sizeof(*report)); |
| priv->measurement_status |= MEASUREMENT_READY; |
| #endif |
| } |
| |
| static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); |
| IWL_DEBUG_RX("sleep mode: %d, src: %d\n", |
| sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
| #endif |
| } |
| |
| static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| IWL_DEBUG_RADIO("Dumping %d bytes of unhandled " |
| "notification for %s:\n", |
| le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd)); |
| iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len)); |
| } |
| |
| 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->interface_id, NULL); |
| |
| if (!beacon) { |
| IWL_ERROR("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); |
| } |
| |
| 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 = (void *)rxb->skb->data; |
| struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status); |
| u8 rate = beacon->beacon_notify_hdr.rate; |
| |
| IWL_DEBUG_RX("beacon status %x retries %d iss %d " |
| "tsf %d %d rate %d\n", |
| le32_to_cpu(beacon->beacon_notify_hdr.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 == IEEE80211_IF_TYPE_AP) && |
| (!test_bit(STATUS_EXIT_PENDING, &priv->status))) |
| queue_work(priv->workqueue, &priv->beacon_update); |
| } |
| |
| /* Service response to REPLY_SCAN_CMD (0x80) */ |
| static void iwl_rx_reply_scan(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_scanreq_notification *notif = |
| (struct iwl_scanreq_notification *)pkt->u.raw; |
| |
| IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status); |
| #endif |
| } |
| |
| /* Service SCAN_START_NOTIFICATION (0x82) */ |
| static void iwl_rx_scan_start_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_scanstart_notification *notif = |
| (struct iwl_scanstart_notification *)pkt->u.raw; |
| priv->scan_start_tsf = le32_to_cpu(notif->tsf_low); |
| IWL_DEBUG_SCAN("Scan start: " |
| "%d [802.11%s] " |
| "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", |
| notif->channel, |
| notif->band ? "bg" : "a", |
| notif->tsf_high, |
| notif->tsf_low, notif->status, notif->beacon_timer); |
| } |
| |
| /* Service SCAN_RESULTS_NOTIFICATION (0x83) */ |
| static void iwl_rx_scan_results_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_scanresults_notification *notif = |
| (struct iwl_scanresults_notification *)pkt->u.raw; |
| |
| IWL_DEBUG_SCAN("Scan ch.res: " |
| "%d [802.11%s] " |
| "(TSF: 0x%08X:%08X) - %d " |
| "elapsed=%lu usec (%dms since last)\n", |
| notif->channel, |
| notif->band ? "bg" : "a", |
| le32_to_cpu(notif->tsf_high), |
| le32_to_cpu(notif->tsf_low), |
| le32_to_cpu(notif->statistics[0]), |
| le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf, |
| jiffies_to_msecs(elapsed_jiffies |
| (priv->last_scan_jiffies, jiffies))); |
| |
| priv->last_scan_jiffies = jiffies; |
| } |
| |
| /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ |
| static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw; |
| |
| IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", |
| scan_notif->scanned_channels, |
| scan_notif->tsf_low, |
| scan_notif->tsf_high, scan_notif->status); |
| |
| /* The HW is no longer scanning */ |
| clear_bit(STATUS_SCAN_HW, &priv->status); |
| |
| /* The scan completion notification came in, so kill that timer... */ |
| cancel_delayed_work(&priv->scan_check); |
| |
| IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n", |
| (priv->scan_bands == 2) ? "2.4" : "5.2", |
| jiffies_to_msecs(elapsed_jiffies |
| (priv->scan_pass_start, jiffies))); |
| |
| /* Remove this scanned band from the list |
| * of pending bands to scan */ |
| priv->scan_bands--; |
| |
| /* If a request to abort was given, or the scan did not succeed |
| * then we reset the scan state machine and terminate, |
| * re-queuing another scan if one has been requested */ |
| if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG_INFO("Aborted scan completed.\n"); |
| clear_bit(STATUS_SCAN_ABORTING, &priv->status); |
| } else { |
| /* If there are more bands on this scan pass reschedule */ |
| if (priv->scan_bands > 0) |
| goto reschedule; |
| } |
| |
| priv->last_scan_jiffies = jiffies; |
| IWL_DEBUG_INFO("Setting scan to off\n"); |
| |
| clear_bit(STATUS_SCANNING, &priv->status); |
| |
| IWL_DEBUG_INFO("Scan took %dms\n", |
| jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies))); |
| |
| queue_work(priv->workqueue, &priv->scan_completed); |
| |
| return; |
| |
| reschedule: |
| priv->scan_pass_start = jiffies; |
| queue_work(priv->workqueue, &priv->request_scan); |
| } |
| |
| /* 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 = (void *)rxb->skb->data; |
| u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
| unsigned long status = priv->status; |
| |
| IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n", |
| (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
| (flags & SW_CARD_DISABLED) ? "Kill" : "On"); |
| |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| 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); |
| |
| 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); |
| } |
| |
| /** |
| * 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_ADD_STA] = iwl_rx_reply_add_sta; |
| priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error; |
| priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa; |
| priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = |
| iwl_rx_spectrum_measure_notif; |
| 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; |
| |
| /* NOTE: iwl_rx_statistics is different based on whether |
| * the build is for the 3945 or the 4965. See the |
| * corresponding implementation in iwl-XXXX.c |
| * |
| * The same handler is used for both the REPLY to a |
| * discrete statistics request from the host as well as |
| * for the periodic statistics notification from the uCode |
| */ |
| priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics; |
| priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics; |
| |
| priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan; |
| priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif; |
| priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] = |
| iwl_rx_scan_results_notif; |
| priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] = |
| iwl_rx_scan_complete_notif; |
| priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif; |
| priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx; |
| |
| /* Setup hardware specific Rx handlers */ |
| iwl_hw_rx_handler_setup(priv); |
| } |
| |
| /** |
| * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them |
| * @rxb: Rx buffer to reclaim |
| * |
| * If an Rx buffer has an async callback associated with it the callback |
| * will be executed. The attached skb (if present) will only be freed |
| * if the callback returns 1 |
| */ |
| static void iwl_tx_cmd_complete(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
| int txq_id = SEQ_TO_QUEUE(sequence); |
| int index = SEQ_TO_INDEX(sequence); |
| int huge = sequence & SEQ_HUGE_FRAME; |
| int cmd_index; |
| struct iwl_cmd *cmd; |
| |
| /* If a Tx command is being handled and it isn't in the actual |
| * command queue then there a command routing bug has been introduced |
| * in the queue management code. */ |
| if (txq_id != IWL_CMD_QUEUE_NUM) |
| IWL_ERROR("Error wrong command queue %d command id 0x%X\n", |
| txq_id, pkt->hdr.cmd); |
| BUG_ON(txq_id != IWL_CMD_QUEUE_NUM); |
| |
| cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge); |
| cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index]; |
| |
| /* Input error checking is done when commands are added to queue. */ |
| if (cmd->meta.flags & CMD_WANT_SKB) { |
| cmd->meta.source->u.skb = rxb->skb; |
| rxb->skb = NULL; |
| } else if (cmd->meta.u.callback && |
| !cmd->meta.u.callback(priv, cmd, rxb->skb)) |
| rxb->skb = NULL; |
| |
| iwl_tx_queue_reclaim(priv, txq_id, index); |
| |
| if (!(cmd->meta.flags & CMD_ASYNC)) { |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| } |
| } |
| |
| /************************** RX-FUNCTIONS ****************************/ |
| /* |
| * Rx theory of operation |
| * |
| * The host allocates 32 DMA target addresses and passes the host address |
| * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is |
| * 0 to 31 |
| * |
| * Rx Queue Indexes |
| * The host/firmware share two index registers for managing the Rx buffers. |
| * |
| * The READ index maps to the first position that the firmware may be writing |
| * to -- the driver can read up to (but not including) this position and get |
| * good data. |
| * The READ index is managed by the firmware once the card is enabled. |
| * |
| * The WRITE index maps to the last position the driver has read from -- the |
| * position preceding WRITE is the last slot the firmware can place a packet. |
| * |
| * The queue is empty (no good data) if WRITE = READ - 1, and is full if |
| * WRITE = READ. |
| * |
| * During initialization the host sets up the READ queue position to the first |
| * INDEX position, and WRITE to the last (READ - 1 wrapped) |
| * |
| * When the firmware places a packet in a buffer it will advance the READ index |
| * and fire the RX interrupt. The driver can then query the READ index and |
| * process as many packets as possible, moving the WRITE index forward as it |
| * resets the Rx queue buffers with new memory. |
| * |
| * The management in the driver is as follows: |
| * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When |
| * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled |
| * to replensish the iwl->rxq->rx_free. |
| * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the |
| * iwl->rxq is replenished and the READ INDEX is updated (updating the |
| * 'processed' and 'read' driver indexes as well) |
| * + A received packet is processed and handed to the kernel network stack, |
| * detached from the iwl->rxq. The driver 'processed' index is updated. |
| * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free |
| * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ |
| * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there |
| * were enough free buffers and RX_STALLED is set it is cleared. |
| * |
| * |
| * Driver sequence: |
| * |
| * iwl_rx_queue_alloc() Allocates rx_free |
| * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls |
| * iwl_rx_queue_restock |
| * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx |
| * queue, updates firmware pointers, and updates |
| * the WRITE index. If insufficient rx_free buffers |
| * are available, schedules iwl_rx_replenish |
| * |
| * -- enable interrupts -- |
| * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the |
| * READ INDEX, detaching the SKB from the pool. |
| * Moves the packet buffer from queue to rx_used. |
| * Calls iwl_rx_queue_restock to refill any empty |
| * slots. |
| * ... |
| * |
| */ |
| |
| /** |
| * iwl_rx_queue_space - Return number of free slots available in queue. |
| */ |
| static int iwl_rx_queue_space(const struct iwl_rx_queue *q) |
| { |
| int s = q->read - q->write; |
| if (s <= 0) |
| s += RX_QUEUE_SIZE; |
| /* keep some buffer to not confuse full and empty queue */ |
| s -= 2; |
| if (s < 0) |
| s = 0; |
| return s; |
| } |
| |
| /** |
| * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue |
| * |
| * NOTE: This function has 3945 and 4965 specific code sections |
| * but is declared in base due to the majority of the |
| * implementation being the same (only a numeric constant is |
| * different) |
| * |
| */ |
| int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q) |
| { |
| u32 reg = 0; |
| int rc = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&q->lock, flags); |
| |
| if (q->need_update == 0) |
| goto exit_unlock; |
| |
| if (test_bit(STATUS_POWER_PMI, &priv->status)) { |
| reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); |
| |
| if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { |
| iwl_set_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| goto exit_unlock; |
| } |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) |
| goto exit_unlock; |
| |
| iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR, |
| q->write & ~0x7); |
| iwl_release_restricted_access(priv); |
| } else |
| iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7); |
| |
| |
| q->need_update = 0; |
| |
| exit_unlock: |
| spin_unlock_irqrestore(&q->lock, flags); |
| return rc; |
| } |
| |
| /** |
| * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer. |
| * |
| * NOTE: This function has 3945 and 4965 specific code paths in it. |
| */ |
| static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv, |
| dma_addr_t dma_addr) |
| { |
| return cpu_to_le32((u32)dma_addr); |
| } |
| |
| /** |
| * iwl_rx_queue_restock - refill RX queue from pre-allocated pool |
| * |
| * If there are slots in the RX queue that need to be restocked, |
| * and we have free pre-allocated buffers, fill the ranks as much |
| * as we can pulling from rx_free. |
| * |
| * This moves the 'write' index forward to catch up with 'processed', and |
| * also updates the memory address in the firmware to reference the new |
| * target buffer. |
| */ |
| int iwl_rx_queue_restock(struct iwl_priv *priv) |
| { |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| struct list_head *element; |
| struct iwl_rx_mem_buffer *rxb; |
| unsigned long flags; |
| int write, rc; |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| write = rxq->write & ~0x7; |
| while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { |
| element = rxq->rx_free.next; |
| rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| list_del(element); |
| rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr); |
| rxq->queue[rxq->write] = rxb; |
| rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; |
| rxq->free_count--; |
| } |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| /* If the pre-allocated buffer pool is dropping low, schedule to |
| * refill it */ |
| if (rxq->free_count <= RX_LOW_WATERMARK) |
| queue_work(priv->workqueue, &priv->rx_replenish); |
| |
| |
| /* If we've added more space for the firmware to place data, tell it */ |
| if ((write != (rxq->write & ~0x7)) |
| || (abs(rxq->write - rxq->read) > 7)) { |
| spin_lock_irqsave(&rxq->lock, flags); |
| rxq->need_update = 1; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| rc = iwl_rx_queue_update_write_ptr(priv, rxq); |
| if (rc) |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_rx_replensih - Move all used packet from rx_used to rx_free |
| * |
| * When moving to rx_free an SKB is allocated for the slot. |
| * |
| * Also restock the Rx queue via iwl_rx_queue_restock. |
| * This is called as a scheduled work item (except for during intialization) |
| */ |
| void iwl_rx_replenish(void *data) |
| { |
| struct iwl_priv *priv = data; |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| struct list_head *element; |
| struct iwl_rx_mem_buffer *rxb; |
| unsigned long flags; |
| spin_lock_irqsave(&rxq->lock, flags); |
| while (!list_empty(&rxq->rx_used)) { |
| element = rxq->rx_used.next; |
| rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| rxb->skb = |
| alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC); |
| if (!rxb->skb) { |
| if (net_ratelimit()) |
| printk(KERN_CRIT DRV_NAME |
| ": Can not allocate SKB buffers\n"); |
| /* We don't reschedule replenish work here -- we will |
| * call the restock method and if it still needs |
| * more buffers it will schedule replenish */ |
| break; |
| } |
| priv->alloc_rxb_skb++; |
| list_del(element); |
| rxb->dma_addr = |
| pci_map_single(priv->pci_dev, rxb->skb->data, |
| IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| list_add_tail(&rxb->list, &rxq->rx_free); |
| rxq->free_count++; |
| } |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_rx_queue_restock(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| /* Assumes that the skb field of the buffers in 'pool' is kept accurate. |
| * If an SKB has been detached, the POOL needs to have it's SKB set to NULL |
| * This free routine walks the list of POOL entries and if SKB is set to |
| * non NULL it is unmapped and freed |
| */ |
| void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| { |
| int i; |
| for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { |
| if (rxq->pool[i].skb != NULL) { |
| pci_unmap_single(priv->pci_dev, |
| rxq->pool[i].dma_addr, |
| IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(rxq->pool[i].skb); |
| } |
| } |
| |
| pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
| rxq->dma_addr); |
| rxq->bd = NULL; |
| } |
| |
| int iwl_rx_queue_alloc(struct iwl_priv *priv) |
| { |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| struct pci_dev *dev = priv->pci_dev; |
| int i; |
| |
| spin_lock_init(&rxq->lock); |
| INIT_LIST_HEAD(&rxq->rx_free); |
| INIT_LIST_HEAD(&rxq->rx_used); |
| rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr); |
| if (!rxq->bd) |
| return -ENOMEM; |
| /* Fill the rx_used queue with _all_ of the Rx buffers */ |
| for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) |
| list_add_tail(&rxq->pool[i].list, &rxq->rx_used); |
| /* Set us so that we have processed and used all buffers, but have |
| * not restocked the Rx queue with fresh buffers */ |
| rxq->read = rxq->write = 0; |
| rxq->free_count = 0; |
| rxq->need_update = 0; |
| return 0; |
| } |
| |
| void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| { |
| unsigned long flags; |
| int i; |
| spin_lock_irqsave(&rxq->lock, flags); |
| INIT_LIST_HEAD(&rxq->rx_free); |
| INIT_LIST_HEAD(&rxq->rx_used); |
| /* Fill the rx_used queue with _all_ of the Rx buffers */ |
| for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { |
| /* In the reset function, these buffers may have been allocated |
| * to an SKB, so we need to unmap and free potential storage */ |
| if (rxq->pool[i].skb != NULL) { |
| pci_unmap_single(priv->pci_dev, |
| rxq->pool[i].dma_addr, |
| IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb(rxq->pool[i].skb); |
| rxq->pool[i].skb = NULL; |
| } |
| list_add_tail(&rxq->pool[i].list, &rxq->rx_used); |
| } |
| |
| /* Set us so that we have processed and used all buffers, but have |
| * not restocked the Rx queue with fresh buffers */ |
| rxq->read = rxq->write = 0; |
| rxq->free_count = 0; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| } |
| |
| /* Convert linear signal-to-noise ratio into dB */ |
| static u8 ratio2dB[100] = { |
| /* 0 1 2 3 4 5 6 7 8 9 */ |
| 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ |
| 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ |
| 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ |
| 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ |
| 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ |
| 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ |
| 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ |
| 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ |
| 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ |
| 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ |
| }; |
| |
| /* Calculates a relative dB value from a ratio of linear |
| * (i.e. not dB) signal levels. |
| * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ |
| int iwl_calc_db_from_ratio(int sig_ratio) |
| { |
| /* Anything above 1000:1 just report as 60 dB */ |
| if (sig_ratio > 1000) |
| return 60; |
| |
| /* Above 100:1, divide by 10 and use table, |
| * add 20 dB to make up for divide by 10 */ |
| if (sig_ratio > 100) |
| return (20 + (int)ratio2dB[sig_ratio/10]); |
| |
| /* We shouldn't see this */ |
| if (sig_ratio < 1) |
| return 0; |
| |
| /* Use table for ratios 1:1 - 99:1 */ |
| return (int)ratio2dB[sig_ratio]; |
| } |
| |
| #define PERFECT_RSSI (-20) /* dBm */ |
| #define WORST_RSSI (-95) /* dBm */ |
| #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) |
| |
| /* Calculate an indication of rx signal quality (a percentage, not dBm!). |
| * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info |
| * about formulas used below. */ |
| int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm) |
| { |
| int sig_qual; |
| int degradation = PERFECT_RSSI - rssi_dbm; |
| |
| /* If we get a noise measurement, use signal-to-noise ratio (SNR) |
| * as indicator; formula is (signal dbm - noise dbm). |
| * SNR at or above 40 is a great signal (100%). |
| * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. |
| * Weakest usable signal is usually 10 - 15 dB SNR. */ |
| if (noise_dbm) { |
| if (rssi_dbm - noise_dbm >= 40) |
| return 100; |
| else if (rssi_dbm < noise_dbm) |
| return 0; |
| sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; |
| |
| /* Else use just the signal level. |
| * This formula is a least squares fit of data points collected and |
| * compared with a reference system that had a percentage (%) display |
| * for signal quality. */ |
| } else |
| sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * |
| (15 * RSSI_RANGE + 62 * degradation)) / |
| (RSSI_RANGE * RSSI_RANGE); |
| |
| if (sig_qual > 100) |
| sig_qual = 100; |
| else if (sig_qual < 1) |
| sig_qual = 0; |
| |
| return sig_qual; |
| } |
| |
| /** |
| * iwl_rx_handle - Main entry function for receiving responses from the uCode |
| * |
| * Uses the priv->rx_handlers callback function array to invoke |
| * the appropriate handlers, including command responses, |
| * frame-received notifications, and other notifications. |
| */ |
| static void iwl_rx_handle(struct iwl_priv *priv) |
| { |
| struct iwl_rx_mem_buffer *rxb; |
| struct iwl_rx_packet *pkt; |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| u32 r, i; |
| int reclaim; |
| unsigned long flags; |
| |
| r = iwl_hw_get_rx_read(priv); |
| i = rxq->read; |
| |
| /* Rx interrupt, but nothing sent from uCode */ |
| if (i == r) |
| IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i); |
| |
| while (i != r) { |
| rxb = rxq->queue[i]; |
| |
| /* If an RXB doesn't have a queue slot associated with it |
| * then a bug has been introduced in the queue refilling |
| * routines -- catch it here */ |
| BUG_ON(rxb == NULL); |
| |
| rxq->queue[i] = NULL; |
| |
| pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr, |
| IWL_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 != 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(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, |
| "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(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR, |
| "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_WARNING("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->dma_addr, |
| IWL_RX_BUF_SIZE, 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; |
| } |
| |
| /* Backtrack one entry */ |
| priv->rxq.read = i; |
| iwl_rx_queue_restock(priv); |
| } |
| |
| int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv, |
| struct iwl_tx_queue *txq) |
| { |
| u32 reg = 0; |
| int rc = 0; |
| int txq_id = txq->q.id; |
| |
| if (txq->need_update == 0) |
| return rc; |
| |
| /* if we're trying to save power */ |
| if (test_bit(STATUS_POWER_PMI, &priv->status)) { |
| /* wake up nic if it's powered down ... |
| * uCode will wake up, and interrupt us again, so next |
| * time we'll skip this part. */ |
| reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); |
| |
| if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { |
| IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg); |
| iwl_set_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| return rc; |
| } |
| |
| /* restore this queue's parameters in nic hardware. */ |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) |
| return rc; |
| iwl_write_restricted(priv, HBUS_TARG_WRPTR, |
| txq->q.first_empty | (txq_id << 8)); |
| iwl_release_restricted_access(priv); |
| |
| /* else not in power-save mode, uCode will never sleep when we're |
| * trying to tx (during RFKILL, we're not trying to tx). */ |
| } else |
| iwl_write32(priv, HBUS_TARG_WRPTR, |
| txq->q.first_empty | (txq_id << 8)); |
| |
| txq->need_update = 0; |
| |
| return rc; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon) |
| { |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_RADIO("RX CONFIG:\n"); |
| iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
| IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
| IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); |
| IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n", |
| le32_to_cpu(rxon->filter_flags)); |
| IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); |
| IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n", |
| rxon->ofdm_basic_rates); |
| IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); |
| IWL_DEBUG_RADIO("u8[6] node_addr: %s\n", |
| print_mac(mac, rxon->node_addr)); |
| IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n", |
| print_mac(mac, rxon->bssid_addr)); |
| IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
| } |
| #endif |
| |
| static void iwl_enable_interrupts(struct iwl_priv *priv) |
| { |
| IWL_DEBUG_ISR("Enabling interrupts\n"); |
| set_bit(STATUS_INT_ENABLED, &priv->status); |
| iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK); |
| } |
| |
| static inline void iwl_disable_interrupts(struct iwl_priv *priv) |
| { |
| clear_bit(STATUS_INT_ENABLED, &priv->status); |
| |
| /* disable interrupts from uCode/NIC to host */ |
| iwl_write32(priv, CSR_INT_MASK, 0x00000000); |
| |
| /* acknowledge/clear/reset any interrupts still pending |
| * from uCode or flow handler (Rx/Tx DMA) */ |
| iwl_write32(priv, CSR_INT, 0xffffffff); |
| iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff); |
| IWL_DEBUG_ISR("Disabled interrupts\n"); |
| } |
| |
| static const char *desc_lookup(int i) |
| { |
| switch (i) { |
| case 1: |
| return "FAIL"; |
| case 2: |
| return "BAD_PARAM"; |
| case 3: |
| return "BAD_CHECKSUM"; |
| case 4: |
| return "NMI_INTERRUPT"; |
| case 5: |
| return "SYSASSERT"; |
| case 6: |
| return "FATAL_ERROR"; |
| } |
| |
| return "UNKNOWN"; |
| } |
| |
| #define ERROR_START_OFFSET (1 * sizeof(u32)) |
| #define ERROR_ELEM_SIZE (7 * sizeof(u32)) |
| |
| static void iwl_dump_nic_error_log(struct iwl_priv *priv) |
| { |
| u32 i; |
| u32 desc, time, count, base, data1; |
| u32 blink1, blink2, ilink1, ilink2; |
| int rc; |
| |
| base = le32_to_cpu(priv->card_alive.error_event_table_ptr); |
| |
| if (!iwl_hw_valid_rtc_data_addr(base)) { |
| IWL_ERROR("Not valid error log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) { |
| IWL_WARNING("Can not read from adapter at this time.\n"); |
| return; |
| } |
| |
| count = iwl_read_restricted_mem(priv, base); |
| |
| if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { |
| IWL_ERROR("Start IWL Error Log Dump:\n"); |
| IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n", |
| priv->status, priv->config, count); |
| } |
| |
| IWL_ERROR("Desc Time asrtPC blink2 " |
| "ilink1 nmiPC Line\n"); |
| for (i = ERROR_START_OFFSET; |
| i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; |
| i += ERROR_ELEM_SIZE) { |
| desc = iwl_read_restricted_mem(priv, base + i); |
| time = |
| iwl_read_restricted_mem(priv, base + i + 1 * sizeof(u32)); |
| blink1 = |
| iwl_read_restricted_mem(priv, base + i + 2 * sizeof(u32)); |
| blink2 = |
| iwl_read_restricted_mem(priv, base + i + 3 * sizeof(u32)); |
| ilink1 = |
| iwl_read_restricted_mem(priv, base + i + 4 * sizeof(u32)); |
| ilink2 = |
| iwl_read_restricted_mem(priv, base + i + 5 * sizeof(u32)); |
| data1 = |
| iwl_read_restricted_mem(priv, base + i + 6 * sizeof(u32)); |
| |
| IWL_ERROR |
| ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", |
| desc_lookup(desc), desc, time, blink1, blink2, |
| ilink1, ilink2, data1); |
| } |
| |
| iwl_release_restricted_access(priv); |
| |
| } |
| |
| #define EVENT_START_OFFSET (4 * sizeof(u32)) |
| |
| /** |
| * iwl_print_event_log - Dump error event log to syslog |
| * |
| * NOTE: Must be called with iwl_grab_restricted_access() already obtained! |
| */ |
| static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, |
| u32 num_events, u32 mode) |
| { |
| u32 i; |
| u32 base; /* SRAM byte address of event log header */ |
| u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ |
| u32 ptr; /* SRAM byte address of log data */ |
| u32 ev, time, data; /* event log data */ |
| |
| if (num_events == 0) |
| return; |
| |
| base = le32_to_cpu(priv->card_alive.log_event_table_ptr); |
| |
| if (mode == 0) |
| event_size = 2 * sizeof(u32); |
| else |
| event_size = 3 * sizeof(u32); |
| |
| ptr = base + EVENT_START_OFFSET + (start_idx * event_size); |
| |
| /* "time" is actually "data" for mode 0 (no timestamp). |
| * place event id # at far right for easier visual parsing. */ |
| for (i = 0; i < num_events; i++) { |
| ev = iwl_read_restricted_mem(priv, ptr); |
| ptr += sizeof(u32); |
| time = iwl_read_restricted_mem(priv, ptr); |
| ptr += sizeof(u32); |
| if (mode == 0) |
| IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */ |
| else { |
| data = iwl_read_restricted_mem(priv, ptr); |
| ptr += sizeof(u32); |
| IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev); |
| } |
| } |
| } |
| |
| static void iwl_dump_nic_event_log(struct iwl_priv *priv) |
| { |
| int rc; |
| u32 base; /* SRAM byte address of event log header */ |
| u32 capacity; /* event log capacity in # entries */ |
| u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ |
| u32 num_wraps; /* # times uCode wrapped to top of log */ |
| u32 next_entry; /* index of next entry to be written by uCode */ |
| u32 size; /* # entries that we'll print */ |
| |
| base = le32_to_cpu(priv->card_alive.log_event_table_ptr); |
| if (!iwl_hw_valid_rtc_data_addr(base)) { |
| IWL_ERROR("Invalid event log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) { |
| IWL_WARNING("Can not read from adapter at this time.\n"); |
| return; |
| } |
| |
| /* event log header */ |
| capacity = iwl_read_restricted_mem(priv, base); |
| mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32))); |
| num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32))); |
| next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32))); |
| |
| size = num_wraps ? capacity : next_entry; |
| |
| /* bail out if nothing in log */ |
| if (size == 0) { |
| IWL_ERROR("Start IWL Event Log Dump: nothing in log\n"); |
| iwl_release_restricted_access(priv); |
| return; |
| } |
| |
| IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n", |
| size, num_wraps); |
| |
| /* if uCode has wrapped back to top of log, start at the oldest entry, |
| * i.e the next one that uCode would fill. */ |
| if (num_wraps) |
| iwl_print_event_log(priv, next_entry, |
| capacity - next_entry, mode); |
| |
| /* (then/else) start at top of log */ |
| iwl_print_event_log(priv, 0, next_entry, mode); |
| |
| iwl_release_restricted_access(priv); |
| } |
| |
| /** |
| * iwl_irq_handle_error - called for HW or SW error interrupt from card |
| */ |
| static void iwl_irq_handle_error(struct iwl_priv *priv) |
| { |
| /* Set the FW error flag -- cleared on iwl_down */ |
| set_bit(STATUS_FW_ERROR, &priv->status); |
| |
| /* Cancel currently queued command. */ |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_debug_level & IWL_DL_FW_ERRORS) { |
| iwl_dump_nic_error_log(priv); |
| iwl_dump_nic_event_log(priv); |
| iwl_print_rx_config_cmd(&priv->staging_rxon); |
| } |
| #endif |
| |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| /* Keep the restart process from trying to send host |
| * commands by clearing the INIT status bit */ |
| clear_bit(STATUS_READY, &priv->status); |
| |
| if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS, |
| "Restarting adapter due to uCode error.\n"); |
| |
| if (iwl_is_associated(priv)) { |
| memcpy(&priv->recovery_rxon, &priv->active_rxon, |
| sizeof(priv->recovery_rxon)); |
| priv->error_recovering = 1; |
| } |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| } |
| |
| 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; |
| iwl_commit_rxon(priv); |
| |
| iwl_add_station(priv, priv->bssid, 1, 0); |
| |
| 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 (iwl_debug_level & IWL_DL_ISR) { |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ |
| IWL_DEBUG_ISR("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 & CSR_FH_INT_RX_MASK) |
| inta |= CSR_INT_BIT_FH_RX; |
| if (inta_fh & CSR_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_ERROR("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 (iwl_debug_level & (IWL_DL_ISR)) { |
| /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
| if (inta & CSR_INT_BIT_MAC_CLK_ACTV) |
| IWL_DEBUG_ISR("Microcode started or stopped.\n"); |
| |
| /* Alive notification via Rx interrupt will do the real work */ |
| if (inta & CSR_INT_BIT_ALIVE) |
| IWL_DEBUG_ISR("Alive interrupt\n"); |
| } |
| #endif |
| /* Safely ignore these bits for debug checks below */ |
| inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE); |
| |
| /* HW RF KILL switch toggled (4965 only) */ |
| 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(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR, |
| "RF_KILL bit toggled to %s.\n", |
| hw_rf_kill ? "disable radio":"enable radio"); |
| |
| /* Queue restart only if RF_KILL switch was set to "kill" |
| * when we loaded driver, and is now set to "enable". |
| * After we're Alive, RF_KILL gets handled by |
| * iwl_rx_card_state_notif() */ |
| if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) { |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| |
| handled |= CSR_INT_BIT_RF_KILL; |
| } |
| |
| /* Chip got too hot and stopped itself (4965 only) */ |
| if (inta & CSR_INT_BIT_CT_KILL) { |
| IWL_ERROR("Microcode CT kill error detected.\n"); |
| handled |= CSR_INT_BIT_CT_KILL; |
| } |
| |
| /* Error detected by uCode */ |
| if (inta & CSR_INT_BIT_SW_ERR) { |
| IWL_ERROR("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("Wakeup interrupt\n"); |
| iwl_rx_queue_update_write_ptr(priv, &priv->rxq); |
| iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]); |
| iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]); |
| iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]); |
| iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]); |
| iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]); |
| iwl_tx_queue_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("Tx interrupt\n"); |
| |
| iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6)); |
| if (!iwl_grab_restricted_access(priv)) { |
| iwl_write_restricted(priv, |
| FH_TCSR_CREDIT |
| (ALM_FH_SRVC_CHNL), 0x0); |
| iwl_release_restricted_access(priv); |
| } |
| handled |= CSR_INT_BIT_FH_TX; |
| } |
| |
| if (inta & ~handled) |
| IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled); |
| |
| if (inta & ~CSR_INI_SET_MASK) { |
| IWL_WARNING("Disabled INTA bits 0x%08x were pending\n", |
| inta & ~CSR_INI_SET_MASK); |
| IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh); |
| } |
| |
| /* Re-enable all interrupts */ |
| iwl_enable_interrupts(priv); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_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("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); |
| } |
| |
| static irqreturn_t iwl_isr(int irq, void *data) |
| { |
| struct iwl_priv *priv = data; |
| u32 inta, inta_mask; |
| u32 inta_fh; |
| if (!priv) |
| return IRQ_NONE; |
| |
| spin_lock(&priv->lock); |
| |
| /* Disable (but don't clear!) interrupts here to avoid |
| * back-to-back ISRs and sporadic interrupts from our NIC. |
| * If we have something to service, the tasklet will re-enable ints. |
| * If we *don't* have something, we'll re-enable before leaving here. */ |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ |
| iwl_write32(priv, CSR_INT_MASK, 0x00000000); |
| |
| /* Discover which interrupts are active/pending */ |
| inta = iwl_read32(priv, CSR_INT); |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| |
| /* Ignore interrupt if there's nothing in NIC to service. |
| * This may be due to IRQ shared with another device, |
| * or due to sporadic interrupts thrown from our NIC. */ |
| if (!inta && !inta_fh) { |
| IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); |
| goto none; |
| } |
| |
| if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { |
| /* Hardware disappeared */ |
| IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta); |
| goto unplugged; |
| } |
| |
| IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
| inta, inta_mask, inta_fh); |
| |
| /* iwl_irq_tasklet() will service interrupts and re-enable them */ |
| tasklet_schedule(&priv->irq_tasklet); |
| unplugged: |
| spin_unlock(&priv->lock); |
| |
| return IRQ_HANDLED; |
| |
| none: |
| /* re-enable interrupts here since we don't have anything to service. */ |
| iwl_enable_interrupts(priv); |
| spin_unlock(&priv->lock); |
| return IRQ_NONE; |
| } |
| |
| /************************** EEPROM BANDS **************************** |
| * |
| * The iwl_eeprom_band definitions below provide the mapping from the |
| * EEPROM contents to the specific channel number supported for each |
| * band. |
| * |
| * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3 |
| * definition below maps to physical channel 42 in the 5.2GHz spectrum. |
| * The specific geography and calibration information for that channel |
| * is contained in the eeprom map itself. |
| * |
| * During init, we copy the eeprom information and channel map |
| * information into priv->channel_info_24/52 and priv->channel_map_24/52 |
| * |
| * channel_map_24/52 provides the index in the channel_info array for a |
| * given channel. We have to have two separate maps as there is channel |
| * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and |
| * band_2 |
| * |
| * A value of 0xff stored in the channel_map indicates that the channel |
| * is not supported by the hardware at all. |
| * |
| * A value of 0xfe in the channel_map indicates that the channel is not |
| * valid for Tx with the current hardware. This means that |
| * while the system can tune and receive on a given channel, it may not |
| * be able to associate or transmit any frames on that |
| * channel. There is no corresponding channel information for that |
| * entry. |
| * |
| *********************************************************************/ |
| |
| /* 2.4 GHz */ |
| static const u8 iwl_eeprom_band_1[14] = { |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 |
| }; |
| |
| /* 5.2 GHz bands */ |
| static const u8 iwl_eeprom_band_2[] = { |
| 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 |
| }; |
| |
| static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */ |
| 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 |
| }; |
| |
| static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ |
| 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 |
| }; |
| |
| static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ |
| 145, 149, 153, 157, 161, 165 |
| }; |
| |
| static void iwl_init_band_reference(const struct iwl_priv *priv, int band, |
| int *eeprom_ch_count, |
| const struct iwl_eeprom_channel |
| **eeprom_ch_info, |
| const u8 **eeprom_ch_index) |
| { |
| switch (band) { |
| case 1: /* 2.4GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); |
| *eeprom_ch_info = priv->eeprom.band_1_channels; |
| *eeprom_ch_index = iwl_eeprom_band_1; |
| break; |
| case 2: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); |
| *eeprom_ch_info = priv->eeprom.band_2_channels; |
| *eeprom_ch_index = iwl_eeprom_band_2; |
| break; |
| case 3: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); |
| *eeprom_ch_info = priv->eeprom.band_3_channels; |
| *eeprom_ch_index = iwl_eeprom_band_3; |
| break; |
| case 4: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); |
| *eeprom_ch_info = priv->eeprom.band_4_channels; |
| *eeprom_ch_index = iwl_eeprom_band_4; |
| break; |
| case 5: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); |
| *eeprom_ch_info = priv->eeprom.band_5_channels; |
| *eeprom_ch_index = iwl_eeprom_band_5; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| } |
| |
| const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv, |
| int phymode, u16 channel) |
| { |
| int i; |
| |
| switch (phymode) { |
| case MODE_IEEE80211A: |
| for (i = 14; i < priv->channel_count; i++) { |
| if (priv->channel_info[i].channel == channel) |
| return &priv->channel_info[i]; |
| } |
| break; |
| |
| case MODE_IEEE80211B: |
| case MODE_IEEE80211G: |
| if (channel >= 1 && channel <= 14) |
| return &priv->channel_info[channel - 1]; |
| break; |
| |
| } |
| |
| return NULL; |
| } |
| |
| #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ |
| ? # x " " : "") |
| |
| static int iwl_init_channel_map(struct iwl_priv *priv) |
| { |
| int eeprom_ch_count = 0; |
| const u8 *eeprom_ch_index = NULL; |
| const struct iwl_eeprom_channel *eeprom_ch_info = NULL; |
| int band, ch; |
| struct iwl_channel_info *ch_info; |
| |
| if (priv->channel_count) { |
| IWL_DEBUG_INFO("Channel map already initialized.\n"); |
| return 0; |
| } |
| |
| if (priv->eeprom.version < 0x2f) { |
| IWL_WARNING("Unsupported EEPROM version: 0x%04X\n", |
| priv->eeprom.version); |
| return -EINVAL; |
| } |
| |
| IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n"); |
| |
| priv->channel_count = |
| ARRAY_SIZE(iwl_eeprom_band_1) + |
| ARRAY_SIZE(iwl_eeprom_band_2) + |
| ARRAY_SIZE(iwl_eeprom_band_3) + |
| ARRAY_SIZE(iwl_eeprom_band_4) + |
| ARRAY_SIZE(iwl_eeprom_band_5); |
| |
| IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count); |
| |
| priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) * |
| priv->channel_count, GFP_KERNEL); |
| if (!priv->channel_info) { |
| IWL_ERROR("Could not allocate channel_info\n"); |
| priv->channel_count = 0; |
| return -ENOMEM; |
| } |
| |
| ch_info = priv->channel_info; |
| |
| /* Loop through the 5 EEPROM bands adding them in order to the |
| * channel map we maintain (that contains additional information than |
| * what just in the EEPROM) */ |
| for (band = 1; band <= 5; band++) { |
| |
| iwl_init_band_reference(priv, band, &eeprom_ch_count, |
| &eeprom_ch_info, &eeprom_ch_index); |
| |
| /* Loop through each band adding each of the channels */ |
| for (ch = 0; ch < eeprom_ch_count; ch++) { |
| ch_info->channel = eeprom_ch_index[ch]; |
| ch_info->phymode = (band == 1) ? MODE_IEEE80211B : |
| MODE_IEEE80211A; |
| |
| /* permanently store EEPROM's channel regulatory flags |
| * and max power in channel info database. */ |
| ch_info->eeprom = eeprom_ch_info[ch]; |
| |
| /* Copy the run-time flags so they are there even on |
| * invalid channels */ |
| ch_info->flags = eeprom_ch_info[ch].flags; |
| |
| if (!(is_channel_valid(ch_info))) { |
| IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - " |
| "No traffic\n", |
| ch_info->channel, |
| ch_info->flags, |
| is_channel_a_band(ch_info) ? |
| "5.2" : "2.4"); |
| ch_info++; |
| continue; |
| } |
| |
| /* Initialize regulatory-based run-time data */ |
| ch_info->max_power_avg = ch_info->curr_txpow = |
| eeprom_ch_info[ch].max_power_avg; |
| ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; |
| ch_info->min_power = 0; |
| |
| IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x" |
| " %ddBm): Ad-Hoc %ssupported\n", |
| ch_info->channel, |
| is_channel_a_band(ch_info) ? |
| "5.2" : "2.4", |
| CHECK_AND_PRINT(IBSS), |
| CHECK_AND_PRINT(ACTIVE), |
| CHECK_AND_PRINT(RADAR), |
| CHECK_AND_PRINT(WIDE), |
| CHECK_AND_PRINT(NARROW), |
| CHECK_AND_PRINT(DFS), |
| eeprom_ch_info[ch].flags, |
| eeprom_ch_info[ch].max_power_avg, |
| ((eeprom_ch_info[ch]. |
| flags & EEPROM_CHANNEL_IBSS) |
| && !(eeprom_ch_info[ch]. |
| flags & EEPROM_CHANNEL_RADAR)) |
| ? "" : "not "); |
| |
| /* Set the user_txpower_limit to the highest power |
| * supported by any channel */ |
| if (eeprom_ch_info[ch].max_power_avg > |
| priv->user_txpower_limit) |
| priv->user_txpower_limit = |
| eeprom_ch_info[ch].max_power_avg; |
| |
| ch_info++; |
| } |
| } |
| |
| if (iwl3945_txpower_set_from_eeprom(priv)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after |
| * sending probe req. This should be set long enough to hear probe responses |
| * from more than one AP. */ |
| #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */ |
| #define IWL_ACTIVE_DWELL_TIME_52 (10) |
| |
| /* For faster active scanning, scan will move to the next channel if fewer than |
| * PLCP_QUIET_THRESH packets are heard on this channel within |
| * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell |
| * time if it's a quiet channel (nothing responded to our probe, and there's |
| * no other traffic). |
| * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */ |
| #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */ |
| #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */ |
| |
| /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. |
| * Must be set longer than active dwell time. |
| * For the most reliable scan, set > AP beacon interval (typically 100msec). */ |
| #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ |
| #define IWL_PASSIVE_DWELL_TIME_52 (10) |
| #define IWL_PASSIVE_DWELL_BASE (100) |
| #define IWL_CHANNEL_TUNE_TIME 5 |
| |
| static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode) |
| { |
| if (phymode == MODE_IEEE80211A) |
| return IWL_ACTIVE_DWELL_TIME_52; |
| else |
| return IWL_ACTIVE_DWELL_TIME_24; |
| } |
| |
| static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode) |
| { |
| u16 active = iwl_get_active_dwell_time(priv, phymode); |
| u16 passive = (phymode != MODE_IEEE80211A) ? |
| IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 : |
| IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52; |
| |
| if (iwl_is_associated(priv)) { |
| /* If we're associated, we clamp the maximum passive |
| * dwell time to be 98% of the beacon interval (minus |
| * 2 * channel tune time) */ |
| passive = priv->beacon_int; |
| if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive) |
| passive = IWL_PASSIVE_DWELL_BASE; |
| passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2; |
| } |
| |
| if (passive <= active) |
| passive = active + 1; |
| |
| return passive; |
| } |
| |
| static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode, |
| u8 is_active, u8 direct_mask, |
| struct iwl_scan_channel *scan_ch) |
| { |
| const struct ieee80211_channel *channels = NULL; |
| const struct ieee80211_hw_mode *hw_mode; |
| const struct iwl_channel_info *ch_info; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added, i; |
| |
| hw_mode = iwl_get_hw_mode(priv, phymode); |
| if (!hw_mode) |
| return 0; |
| |
| channels = hw_mode->channels; |
| |
| active_dwell = iwl_get_active_dwell_time(priv, phymode); |
| passive_dwell = iwl_get_passive_dwell_time(priv, phymode); |
| |
| for (i = 0, added = 0; i < hw_mode->num_channels; i++) { |
| if (channels[i].chan == |
| le16_to_cpu(priv->active_rxon.channel)) { |
| if (iwl_is_associated(priv)) { |
| IWL_DEBUG_SCAN |
| ("Skipping current channel %d\n", |
| le16_to_cpu(priv->active_rxon.channel)); |
| continue; |
| } |
| } else if (priv->only_active_channel) |
| continue; |
| |
| scan_ch->channel = channels[i].chan; |
| |
| ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n", |
| scan_ch->channel); |
| continue; |
| } |
| |
| if (!is_active || is_channel_passive(ch_info) || |
| !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN)) |
| scan_ch->type = 0; /* passive */ |
| else |
| scan_ch->type = 1; /* active */ |
| |
| if (scan_ch->type & 1) |
| scan_ch->type |= (direct_mask << 1); |
| |
| if (is_channel_narrow(ch_info)) |
| scan_ch->type |= (1 << 7); |
| |
| scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| |
| /* Set power levels to defaults */ |
| scan_ch->tpc.dsp_atten = 110; |
| /* scan_pwr_info->tpc.dsp_atten; */ |
| |
| /*scan_pwr_info->tpc.tx_gain; */ |
| if (phymode == MODE_IEEE80211A) |
| scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| else { |
| scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); |
| /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| * power level |
| scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3; |
| */ |
| } |
| |
| IWL_DEBUG_SCAN("Scanning %d [%s %d]\n", |
| scan_ch->channel, |
| (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", |
| (scan_ch->type & 1) ? |
| active_dwell : passive_dwell); |
| |
| scan_ch++; |
| added++; |
| } |
| |
| IWL_DEBUG_SCAN("total channels to scan %d \n", added); |
| return added; |
| } |
| |
| static void iwl_reset_channel_flag(struct iwl_priv *priv) |
| { |
| int i, j; |
| for (i = 0; i < 3; i++) { |
| struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i]; |
| for (j = 0; j < hw_mode->num_channels; j++) |
| hw_mode->channels[j].flag = hw_mode->channels[j].val; |
| } |
| } |
| |
| static void iwl_init_hw_rates(struct iwl_priv *priv, |
| struct ieee80211_rate *rates) |
| { |
| int i; |
| |
| for (i = 0; i < IWL_RATE_COUNT; i++) { |
| rates[i].rate = iwl_rates[i].ieee * 5; |
| rates[i].val = i; /* Rate scaling will work on indexes */ |
| rates[i].val2 = i; |
| rates[i].flags = IEEE80211_RATE_SUPPORTED; |
| /* Only OFDM have the bits-per-symbol set */ |
| if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE)) |
| rates[i].flags |= IEEE80211_RATE_OFDM; |
| else { |
| /* |
| * If CCK 1M then set rate flag to CCK else CCK_2 |
| * which is CCK | PREAMBLE2 |
| */ |
| rates[i].flags |= (iwl_rates[i].plcp == 10) ? |
| IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2; |
| } |
| |
| /* Set up which ones are basic rates... */ |
| if (IWL_BASIC_RATES_MASK & (1 << i)) |
| rates[i].flags |= IEEE80211_RATE_BASIC; |
| } |
| } |
| |
| /** |
| * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom |
| */ |
| static int iwl_init_geos(struct iwl_priv *priv) |
| { |
| struct iwl_channel_info *ch; |
| struct ieee80211_hw_mode *modes; |
| struct ieee80211_channel *channels; |
| struct ieee80211_channel *geo_ch; |
| struct ieee80211_rate *rates; |
| int i = 0; |
| enum { |
| A = 0, |
| B = 1, |
| G = 2, |
| }; |
| int mode_count = 3; |
| |
| if (priv->modes) { |
| IWL_DEBUG_INFO("Geography modes already initialized.\n"); |
| set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| return 0; |
| } |
| |
| modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count, |
| GFP_KERNEL); |
| if (!modes) |
| return -ENOMEM; |
| |
| channels = kzalloc(sizeof(struct ieee80211_channel) * |
| priv->channel_count, GFP_KERNEL); |
| if (!channels) { |
| kfree(modes); |
| return -ENOMEM; |
| } |
| |
| rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)), |
| GFP_KERNEL); |
| if (!rates) { |
| kfree(modes); |
| kfree(channels); |
| return -ENOMEM; |
| } |
| |
| /* 0 = 802.11a |
| * 1 = 802.11b |
| * 2 = 802.11g |
| */ |
| |
| /* 5.2GHz channels start after the 2.4GHz channels */ |
| modes[A].mode = MODE_IEEE80211A; |
| modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; |
| modes[A].rates = &rates[4]; |
| modes[A].num_rates = 8; /* just OFDM */ |
| modes[A].num_channels = 0; |
| |
| modes[B].mode = MODE_IEEE80211B; |
| modes[B].channels = channels; |
| modes[B].rates = rates; |
| modes[B].num_rates = 4; /* just CCK */ |
| modes[B].num_channels = 0; |
| |
| modes[G].mode = MODE_IEEE80211G; |
| modes[G].channels = channels; |
| modes[G].rates = rates; |
| modes[G].num_rates = 12; /* OFDM & CCK */ |
| modes[G].num_channels = 0; |
| |
| priv->ieee_channels = channels; |
| priv->ieee_rates = rates; |
| |
| iwl_init_hw_rates(priv, rates); |
| |
| for (i = 0, geo_ch = channels; i < priv->channel_count; i++) { |
| ch = &priv->channel_info[i]; |
| |
| if (!is_channel_valid(ch)) { |
| IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- " |
| "skipping.\n", |
| ch->channel, is_channel_a_band(ch) ? |
| "5.2" : "2.4"); |
| continue; |
| } |
| |
| if (is_channel_a_band(ch)) |
| geo_ch = &modes[A].channels[modes[A].num_channels++]; |
| else { |
| geo_ch = &modes[B].channels[modes[B].num_channels++]; |
| modes[G].num_channels++; |
| } |
| |
| geo_ch->freq = ieee80211chan2mhz(ch->channel); |
| geo_ch->chan = ch->channel; |
| geo_ch->power_level = ch->max_power_avg; |
| geo_ch->antenna_max = 0xff; |
| |
| if (is_channel_valid(ch)) { |
| geo_ch->flag = IEEE80211_CHAN_W_SCAN; |
| if (ch->flags & EEPROM_CHANNEL_IBSS) |
| geo_ch->flag |= IEEE80211_CHAN_W_IBSS; |
| |
| if (ch->flags & EEPROM_CHANNEL_ACTIVE) |
| geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN; |
| |
| if (ch->flags & EEPROM_CHANNEL_RADAR) |
| geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT; |
| |
| if (ch->max_power_avg > priv->max_channel_txpower_limit) |
| priv->max_channel_txpower_limit = |
| ch->max_power_avg; |
| } |
| |
| geo_ch->val = geo_ch->flag; |
| } |
| |
| if ((modes[A].num_channels == 0) && priv->is_abg) { |
| printk(KERN_INFO DRV_NAME |
| ": Incorrectly detected BG card as ABG. Please send " |
| "your PCI ID 0x%04X:0x%04X to maintainer.\n", |
| priv->pci_dev->device, priv->pci_dev->subsystem_device); |
| priv->is_abg = 0; |
| } |
| |
| printk(KERN_INFO DRV_NAME |
| ": Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
| modes[G].num_channels, modes[A].num_channels); |
| |
| /* |
| * NOTE: We register these in preference of order -- the |
| * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick |
| * a phymode based on rates or AP capabilities but seems to |
| * configure it purely on if the channel being configured |
| * is supported by a mode -- and the first match is taken |
| */ |
| |
| if (modes[G].num_channels) |
| ieee80211_register_hwmode(priv->hw, &modes[G]); |
| if (modes[B].num_channels) |
| ieee80211_register_hwmode(priv->hw, &modes[B]); |
| if (modes[A].num_channels) |
| ieee80211_register_hwmode(priv->hw, &modes[A]); |
| |
| priv->modes = modes; |
| set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * uCode download functions |
| * |
| ******************************************************************************/ |
| |
| static void iwl_dealloc_ucode_pci(struct iwl_priv *priv) |
| { |
| if (priv->ucode_code.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_code.len, |
| priv->ucode_code.v_addr, |
| priv->ucode_code.p_addr); |
| priv->ucode_code.v_addr = NULL; |
| } |
| if (priv->ucode_data.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_data.len, |
| priv->ucode_data.v_addr, |
| priv->ucode_data.p_addr); |
| priv->ucode_data.v_addr = NULL; |
| } |
| if (priv->ucode_data_backup.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_data_backup.len, |
| priv->ucode_data_backup.v_addr, |
| priv->ucode_data_backup.p_addr); |
| priv->ucode_data_backup.v_addr = NULL; |
| } |
| if (priv->ucode_init.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_init.len, |
| priv->ucode_init.v_addr, |
| priv->ucode_init.p_addr); |
| priv->ucode_init.v_addr = NULL; |
| } |
| if (priv->ucode_init_data.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_init_data.len, |
| priv->ucode_init_data.v_addr, |
| priv->ucode_init_data.p_addr); |
| priv->ucode_init_data.v_addr = NULL; |
| } |
| if (priv->ucode_boot.v_addr != NULL) { |
| pci_free_consistent(priv->pci_dev, |
| priv->ucode_boot.len, |
| priv->ucode_boot.v_addr, |
| priv->ucode_boot.p_addr); |
| priv->ucode_boot.v_addr = NULL; |
| } |
| } |
| |
| /** |
| * iwl_verify_inst_full - verify runtime uCode image in card vs. host, |
| * looking at all data. |
| */ |
| static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len) |
| { |
| u32 val; |
| u32 save_len = len; |
| int rc = 0; |
| u32 errcnt; |
| |
| IWL_DEBUG_INFO("ucode inst image size is %u\n", len); |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) |
| return rc; |
| |
| iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND); |
| |
| errcnt = 0; |
| for (; len > 0; len -= sizeof(u32), image++) { |
| /* read data comes through single port, auto-incr addr */ |
| /* NOTE: Use the debugless read so we don't flood kernel log |
| * if IWL_DL_IO is set */ |
| val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT); |
| if (val != le32_to_cpu(*image)) { |
| IWL_ERROR("uCode INST section is invalid at " |
| "offset 0x%x, is 0x%x, s/b 0x%x\n", |
| save_len - len, val, le32_to_cpu(*image)); |
| rc = -EIO; |
| errcnt++; |
| if (errcnt >= 20) |
| break; |
| } |
| } |
| |
| iwl_release_restricted_access(priv); |
| |
| if (!errcnt) |
| IWL_DEBUG_INFO |
| ("ucode image in INSTRUCTION memory is good\n"); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host, |
| * using sample data 100 bytes apart. If these sample points are good, |
| * it's a pretty good bet that everything between them is good, too. |
| */ |
| static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) |
| { |
| u32 val; |
| int rc = 0; |
| u32 errcnt = 0; |
| u32 i; |
| |
| IWL_DEBUG_INFO("ucode inst image size is %u\n", len); |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) |
| return rc; |
| |
| for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) { |
| /* read data comes through single port, auto-incr addr */ |
| /* NOTE: Use the debugless read so we don't flood kernel log |
| * if IWL_DL_IO is set */ |
| iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, |
| i + RTC_INST_LOWER_BOUND); |
| val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT); |
| if (val != le32_to_cpu(*image)) { |
| #if 0 /* Enable this if you want to see details */ |
| IWL_ERROR("uCode INST section is invalid at " |
| "offset 0x%x, is 0x%x, s/b 0x%x\n", |
| i, val, *image); |
| #endif |
| rc = -EIO; |
| errcnt++; |
| if (errcnt >= 3) |
| break; |
| } |
| } |
| |
| iwl_release_restricted_access(priv); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * iwl_verify_ucode - determine which instruction image is in SRAM, |
| * and verify its contents |
| */ |
| static int iwl_verify_ucode(struct iwl_priv *priv) |
| { |
| __le32 *image; |
| u32 len; |
| int rc = 0; |
| |
| /* Try bootstrap */ |
| image = (__le32 *)priv->ucode_boot.v_addr; |
| len = priv->ucode_boot.len; |
| rc = iwl_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| /* Try initialize */ |
| image = (__le32 *)priv->ucode_init.v_addr; |
| len = priv->ucode_init.len; |
| rc = iwl_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| /* Try runtime/protocol */ |
| image = (__le32 *)priv->ucode_code.v_addr; |
| len = priv->ucode_code.len; |
| rc = iwl_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); |
| |
| /* Show first several data entries in instruction SRAM. |
| * Selection of bootstrap image is arbitrary. */ |
| image = (__le32 *)priv->ucode_boot.v_addr; |
| len = priv->ucode_boot.len; |
| rc = iwl_verify_inst_full(priv, image, len); |
| |
| return rc; |
| } |
| |
| |
| /* check contents of special bootstrap uCode SRAM */ |
| static int iwl_verify_bsm(struct iwl_priv *priv) |
| { |
| __le32 *image = priv->ucode_boot.v_addr; |
| u32 len = priv->ucode_boot.len; |
| u32 reg; |
| u32 val; |
| |
| IWL_DEBUG_INFO("Begin verify bsm\n"); |
| |
| /* verify BSM SRAM contents */ |
| val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG); |
| for (reg = BSM_SRAM_LOWER_BOUND; |
| reg < BSM_SRAM_LOWER_BOUND + len; |
| reg += sizeof(u32), image ++) { |
| val = iwl_read_restricted_reg(priv, reg); |
| if (val != le32_to_cpu(*image)) { |
| IWL_ERROR("BSM uCode verification failed at " |
| "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", |
| BSM_SRAM_LOWER_BOUND, |
| reg - BSM_SRAM_LOWER_BOUND, len, |
| val, le32_to_cpu(*image)); |
| return -EIO; |
| } |
| } |
| |
| IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_load_bsm - Load bootstrap instructions |
| * |
| * BSM operation: |
| * |
| * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program |
| * in special SRAM that does not power down during RFKILL. When powering back |
| * up after power-saving sleeps (or during initial uCode load), the BSM loads |
| * the bootstrap program into the on-board processor, and starts it. |
| * |
| * The bootstrap program loads (via DMA) instructions and data for a new |
| * program from host DRAM locations indicated by the host driver in the |
| * BSM_DRAM_* registers. Once the new program is loaded, it starts |
| * automatically. |
| * |
| * When initializing the NIC, the host driver points the BSM to the |
| * "initialize" uCode image. This uCode sets up some internal data, then |
| * notifies host via "initialize alive" that it is complete. |
| * |
| * The host then replaces the BSM_DRAM_* pointer values to point to the |
| * normal runtime uCode instructions and a backup uCode data cache buffer |
| * (filled initially with starting data values for the on-board processor), |
| * then triggers the "initialize" uCode to load and launch the runtime uCode, |
| * which begins normal operation. |
| * |
| * When doing a power-save shutdown, runtime uCode saves data SRAM into |
| * the backup data cache in DRAM before SRAM is powered down. |
| * |
| * When powering back up, the BSM loads the bootstrap program. This reloads |
| * the runtime uCode instructions and the backup data cache into SRAM, |
| * and re-launches the runtime uCode from where it left off. |
| */ |
| static int iwl_load_bsm(struct iwl_priv *priv) |
| { |
| __le32 *image = priv->ucode_boot.v_addr; |
| u32 len = priv->ucode_boot.len; |
| dma_addr_t pinst; |
| dma_addr_t pdata; |
| u32 inst_len; |
| u32 data_len; |
| int rc; |
| int i; |
| u32 done; |
| u32 reg_offset; |
| |
| IWL_DEBUG_INFO("Begin load bsm\n"); |
| |
| /* make sure bootstrap program is no larger than BSM's SRAM size */ |
| if (len > IWL_MAX_BSM_SIZE) |
| return -EINVAL; |
| |
| /* Tell bootstrap uCode where to find the "Initialize" uCode |
| * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965. |
| * NOTE: iwl_initialize_alive_start() will replace these values, |
| * after the "initialize" uCode has run, to point to |
| * runtime/protocol instructions and backup data cache. */ |
| pinst = priv->ucode_init.p_addr; |
| pdata = priv->ucode_init_data.p_addr; |
| inst_len = priv->ucode_init.len; |
| data_len = priv->ucode_init_data.len; |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) |
| return rc; |
| |
| iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst); |
| iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata); |
| iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); |
| iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); |
| |
| /* Fill BSM memory with bootstrap instructions */ |
| for (reg_offset = BSM_SRAM_LOWER_BOUND; |
| reg_offset < BSM_SRAM_LOWER_BOUND + len; |
| reg_offset += sizeof(u32), image++) |
| _iwl_write_restricted_reg(priv, reg_offset, |
| le32_to_cpu(*image)); |
| |
| rc = iwl_verify_bsm(priv); |
| if (rc) { |
| iwl_release_restricted_access(priv); |
| return rc; |
| } |
| |
| /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ |
| iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0); |
| iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG, |
| RTC_INST_LOWER_BOUND); |
| iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); |
| |
| /* Load bootstrap code into instruction SRAM now, |
| * to prepare to load "initialize" uCode */ |
| iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG, |
| BSM_WR_CTRL_REG_BIT_START); |
| |
| /* Wait for load of bootstrap uCode to finish */ |
| for (i = 0; i < 100; i++) { |
| done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG); |
| if (!(done & BSM_WR_CTRL_REG_BIT_START)) |
| break; |
| udelay(10); |
| } |
| if (i < 100) |
| IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i); |
| else { |
| IWL_ERROR("BSM write did not complete!\n"); |
| return -EIO; |
| } |
| |
| /* Enable future boot loads whenever power management unit triggers it |
| * (e.g. when powering back up after power-save shutdown) */ |
| iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG, |
| BSM_WR_CTRL_REG_BIT_START_EN); |
| |
| iwl_release_restricted_access(priv); |
| |
| return 0; |
| } |
| |
| 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 rc = 0; |
| const struct firmware *ucode_raw; |
| /* firmware file name contains uCode/driver compatibility version */ |
| const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode"; |
| u8 *src; |
| size_t len; |
| u32 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. */ |
| rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev); |
| if (rc < 0) { |
| IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc); |
| goto error; |
| } |
| |
| IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n", |
| name, ucode_raw->size); |
| |
| /* Make sure that we got at least our header! */ |
| if (ucode_raw->size < sizeof(*ucode)) { |
| IWL_ERROR("File size way too small!\n"); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Data from ucode file: header followed by uCode images */ |
| ucode = (void *)ucode_raw->data; |
| |
| ver = le32_to_cpu(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); |
| |
| IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver); |
| IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", |
| inst_size); |
| IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", |
| data_size); |
| IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", |
| init_size); |
| IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", |
| init_data_size); |
| IWL_DEBUG_INFO("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("uCode file size %d too small\n", |
| (int)ucode_raw->size); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Verify that uCode images will fit in card's SRAM */ |
| if (inst_size > IWL_MAX_INST_SIZE) { |
| IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n", |
| (int)inst_size); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| |
| if (data_size > IWL_MAX_DATA_SIZE) { |
| IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n", |
| (int)data_size); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| if (init_size > IWL_MAX_INST_SIZE) { |
| IWL_DEBUG_INFO |
| ("uCode init instr len %d too large to fit in card\n", |
| (int)init_size); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| if (init_data_size > IWL_MAX_DATA_SIZE) { |
| IWL_DEBUG_INFO |
| ("uCode init data len %d too large to fit in card\n", |
| (int)init_data_size); |
| rc = -EINVAL; |
| goto err_release; |
| } |
| if (boot_size > IWL_MAX_BSM_SIZE) { |
| IWL_DEBUG_INFO |
| ("uCode boot instr len %d too large to fit in bsm\n", |
| (int)boot_size); |
| rc = -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; |
| priv->ucode_code.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_code.len, |
| &(priv->ucode_code.p_addr)); |
| |
| priv->ucode_data.len = data_size; |
| priv->ucode_data.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_data.len, |
| &(priv->ucode_data.p_addr)); |
| |
| priv->ucode_data_backup.len = data_size; |
| priv->ucode_data_backup.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_data_backup.len, |
| &(priv->ucode_data_backup.p_addr)); |
| |
| |
| /* Initialization instructions and data */ |
| priv->ucode_init.len = init_size; |
| priv->ucode_init.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_init.len, |
| &(priv->ucode_init.p_addr)); |
| |
| priv->ucode_init_data.len = init_data_size; |
| priv->ucode_init_data.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_init_data.len, |
| &(priv->ucode_init_data.p_addr)); |
| |
| /* Bootstrap (instructions only, no data) */ |
| priv->ucode_boot.len = boot_size; |
| priv->ucode_boot.v_addr = |
| pci_alloc_consistent(priv->pci_dev, |
| priv->ucode_boot.len, |
| &(priv->ucode_boot.p_addr)); |
| |
| if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr || |
| !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr || |
| !priv->ucode_boot.v_addr || !priv->ucode_data_backup.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("Copying (but not loading) uCode instr len %d\n", |
| (int)len); |
| memcpy(priv->ucode_code.v_addr, src, len); |
| IWL_DEBUG_INFO("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("Copying (but not loading) uCode data len %d\n", |
| (int)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("Copying (but not loading) init instr len %d\n", |
| (int)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("Copying (but not loading) init data len %d\n", |
| (int)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("Copying (but not loading) boot instr len %d\n", |
| (int)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_ERROR("failed to allocate pci memory\n"); |
| rc = -ENOMEM; |
| iwl_dealloc_ucode_pci(priv); |
| |
| err_release: |
| release_firmware(ucode_raw); |
| |
| error: |
| return rc; |
| } |
| |
| |
| /** |
| * iwl_set_ucode_ptrs - Set uCode address location |
| * |
| * Tell initialization uCode where to find runtime uCode. |
| * |
| * BSM registers initially contain pointers to initialization uCode. |
| * We need to replace them to load runtime uCode inst and data, |
| * and to save runtime data when powering down. |
| */ |
| static int iwl_set_ucode_ptrs(struct iwl_priv *priv) |
| { |
| dma_addr_t pinst; |
| dma_addr_t pdata; |
| int rc = 0; |
| unsigned long flags; |
| |
| /* bits 31:0 for 3945 */ |
| pinst = priv->ucode_code.p_addr; |
| pdata = priv->ucode_data_backup.p_addr; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| /* Tell bootstrap uCode where to find image to load */ |
| iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst); |
| iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata); |
| iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, |
| priv->ucode_data.len); |
| |
| /* Inst bytecount must be last to set up, bit 31 signals uCode |
| * that all new ptr/size info is in place */ |
| iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, |
| priv->ucode_code.len | BSM_DRAM_INST_LOAD); |
| |
| iwl_release_restricted_access(priv); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| IWL_DEBUG_INFO("Runtime uCode pointers are set.\n"); |
| |
| return rc; |
| } |
| |
| /** |
| * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved |
| * |
| * Called after REPLY_ALIVE notification received from "initialize" uCode. |
| * |
| * The 4965 "initialize" ALIVE reply contains calibration data for: |
| * Voltage, temperature, and MIMO tx gain correction, now stored in priv |
| * (3945 does not contain this data). |
| * |
| * Tell "initialize" uCode to go ahead and load the runtime uCode. |
| */ |
| static void iwl_init_alive_start(struct iwl_priv *priv) |
| { |
| /* Check alive response for "valid" sign from uCode */ |
| if (priv->card_alive_init.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("Initialize Alive failed.\n"); |
| goto restart; |
| } |
| |
| /* Bootstrap uCode has loaded initialize uCode ... verify inst image. |
| * This is a paranoid check, because we would not have gotten the |
| * "initialize" 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("Bad \"initialize\" uCode load.\n"); |
| goto restart; |
| } |
| |
| /* Send pointers to protocol/runtime uCode image ... init code will |
| * load and launch runtime uCode, which will send us another "Alive" |
| * notification. */ |
| IWL_DEBUG_INFO("Initialization Alive received.\n"); |
| if (iwl_set_ucode_ptrs(priv)) { |
| /* Runtime instruction load won't happen; |
| * take it all the way back down so we can try again */ |
| IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n"); |
| goto restart; |
| } |
| return; |
| |
| restart: |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| |
| |
| /** |
| * 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 rc = 0; |
| int thermal_spin = 0; |
| u32 rfkill; |
| |
| IWL_DEBUG_INFO("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("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("Bad runtime uCode load.\n"); |
| goto restart; |
| } |
| |
| iwl_clear_stations_table(priv); |
| |
| rc = iwl_grab_restricted_access(priv); |
| if (rc) { |
| IWL_WARNING("Can not read rfkill status from adapter\n"); |
| return; |
| } |
| |
| rfkill = iwl_read_restricted_reg(priv, APMG_RFKILL_REG); |
| IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill); |
| iwl_release_restricted_access(priv); |
| |
| if (rfkill & 0x1) { |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| /* if rfkill is not on, then wait for thermal |
| * sensor in adapter to kick in */ |
| while (iwl_hw_get_temperature(priv) == 0) { |
| thermal_spin++; |
| udelay(10); |
| } |
| |
| if (thermal_spin) |
| IWL_DEBUG_INFO("Thermal calibration took %dus\n", |
| thermal_spin * 10); |
| } else |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| /* After the ALIVE response, we can process host commands */ |
| set_bit(STATUS_ALIVE, &priv->status); |
| |
| /* Clear out the uCode error bit if it is set */ |
| clear_bit(STATUS_FW_ERROR, &priv->status); |
| |
| rc = iwl_init_channel_map(priv); |
| if (rc) { |
| IWL_ERROR("initializing regulatory failed: %d\n", rc); |
| return; |
| } |
| |
| iwl_init_geos(priv); |
| |
| if (iwl_is_rfkill(priv)) |
| return; |
| |
| if (!priv->mac80211_registered) { |
| /* Unlock so any user space entry points can call back into |
| * the driver without a deadlock... */ |
| mutex_unlock(&priv->mutex); |
| iwl_rate_control_register(priv->hw); |
| rc = ieee80211_register_hw(priv->hw); |
| priv->hw->conf.beacon_int = 100; |
| mutex_lock(&priv->mutex); |
| |
| if (rc) { |
| iwl_rate_control_unregister(priv->hw); |
| IWL_ERROR("Failed to register network " |
| "device (error %d)\n", rc); |
| return; |
| } |
| |
| priv->mac80211_registered = 1; |
| |
| iwl_reset_channel_flag(priv); |
| } else |
| ieee80211_start_queues(priv->hw); |
| |
| priv->active_rate = priv->rates_mask; |
| priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; |
| |
| iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode)); |
| |
| if (iwl_is_associated(priv)) { |
| struct iwl_rxon_cmd *active_rxon = |
| (struct iwl_rxon_cmd *)(&priv->active_rxon); |
| |
| memcpy(&priv->staging_rxon, &priv->active_rxon, |
| sizeof(priv->staging_rxon)); |
| active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| } else { |
| /* Initialize our rx_config data */ |
| iwl_connection_init_rx_config(priv); |
| memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
| } |
| |
| /* Configure BT coexistence */ |
| iwl_send_bt_config(priv); |
| |
| /* Configure the adapter for unassociated operation */ |
| iwl_commit_rxon(priv); |
| |
| /* At this point, the NIC is initialized and operational */ |
| priv->notif_missed_beacons = 0; |
| set_bit(STATUS_READY, &priv->status); |
| |
| iwl3945_reg_txpower_periodic(priv); |
| |
| IWL_DEBUG_INFO("ALIVE processing complete.\n"); |
| |
| if (priv->error_recovering) |
| iwl_error_recovery(priv); |
| |
| 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); |
| struct ieee80211_conf *conf = NULL; |
| |
| IWL_DEBUG_INFO(DRV_NAME " is going down\n"); |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| if (!exit_pending) |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| iwl_clear_stations_table(priv); |
| |
| /* Unblock any waiting calls */ |
| wake_up_interruptible_all(&priv->wait_command_queue); |
| |
| iwl_cancel_deferred_work(priv); |
| |
| /* 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 */ |
| iwl_disable_interrupts(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 and SUSPEND 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_IN_SUSPEND, &priv->status) << |
| STATUS_IN_SUSPEND; |
| goto exit; |
| } |
| |
| /* ...otherwise clear out all the status bits but the RF Kill and |
| * SUSPEND 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_IN_SUSPEND, &priv->status) << |
| STATUS_IN_SUSPEND | |
| test_bit(STATUS_FW_ERROR, &priv->status) << |
| STATUS_FW_ERROR; |
| |
| 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_hw_txq_ctx_stop(priv); |
| iwl_hw_rxq_stop(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!iwl_grab_restricted_access(priv)) { |
| iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| iwl_release_restricted_access(priv); |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| udelay(5); |
| |
| iwl_hw_nic_stop_master(priv); |
| iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| iwl_hw_nic_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); |
| } |
| |
| #define MAX_HW_RESTARTS 5 |
| |
| static int __iwl_up(struct iwl_priv *priv) |
| { |
| DECLARE_MAC_BUF(mac); |
| int rc, i; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_WARNING("Exit pending; will not bring the NIC up\n"); |
| return -EIO; |
| } |
| |
| if (test_bit(STATUS_RF_KILL_SW, &priv->status)) { |
| IWL_WARNING("Radio disabled by SW RF kill (module " |
| "parameter)\n"); |
| return 0; |
| } |
| |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| |
| rc = iwl_hw_nic_init(priv); |
| if (rc) { |
| IWL_ERROR("Unable to int nic\n"); |
| return rc; |
| } |
| |
| /* make sure rfkill handshake bits are cleared */ |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| /* clear (again), then enable host interrupts */ |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| iwl_enable_interrupts(priv); |
| |
| /* really make sure rfkill handshake bits are cleared */ |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| |
| /* Copy original ucode data image from disk into backup cache. |
| * This will be used to initialize the on-board processor's |
| * data SRAM for a clean start when the runtime program first loads. */ |
| memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, |
| priv->ucode_data.len); |
| |
| for (i = 0; i < MAX_HW_RESTARTS; i++) { |
| |
| iwl_clear_stations_table(priv); |
| |
| /* load bootstrap state machine, |
| * load bootstrap program into processor's memory, |
| * prepare to load the "initialize" uCode */ |
| rc = iwl_load_bsm(priv); |
| |
| if (rc) { |
| IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc); |
| continue; |
| } |
| |
| /* start card; "initialize" will load runtime ucode */ |
| iwl_nic_start(priv); |
| |
| /* MAC Address location in EEPROM same for 3945/4965 */ |
| get_eeprom_mac(priv, priv->mac_addr); |
| IWL_DEBUG_INFO("MAC address: %s\n", |
| print_mac(mac, priv->mac_addr)); |
| |
| SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); |
| |
| IWL_DEBUG_INFO(DRV_NAME " is coming up\n"); |
| |
| return 0; |
| } |
| |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| __iwl_down(priv); |
| |
| /* tried to restart and config the device for as long as our |
| * patience could withstand */ |
| IWL_ERROR("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); |
| iwl_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_rf_kill(struct work_struct *work) |
| { |
| struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill); |
| |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_is_rfkill(priv)) { |
| IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL, |
| "HW and/or SW RF Kill no longer active, restarting " |
| "device\n"); |
| if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| queue_work(priv->workqueue, &priv->restart); |
| } else { |
| |
| if (!test_bit(STATUS_RF_KILL_HW, &priv->status)) |
| IWL_DEBUG_RF_KILL("Can not turn radio back on - " |
| "disabled by SW switch\n"); |
| else |
| IWL_WARNING("Radio Frequency Kill Switch is On:\n" |
| "Kill switch must be turned off for " |
| "wireless networking to work.\n"); |
| } |
| mutex_unlock(&priv->mutex); |
| } |
| |
| #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) |
| |
| static void iwl_bg_scan_check(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, scan_check.work); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| if (test_bit(STATUS_SCANNING, &priv->status) || |
| test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, |
| "Scan completion watchdog resetting adapter (%dms)\n", |
| jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); |
| |
| if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| iwl_send_scan_abort(priv); |
| } |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl_bg_request_scan(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, request_scan); |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SCAN_CMD, |
| .len = sizeof(struct iwl_scan_cmd), |
| .meta.flags = CMD_SIZE_HUGE, |
| }; |
| int rc = 0; |
| struct iwl_scan_cmd *scan; |
| struct ieee80211_conf *conf = NULL; |
| u8 direct_mask; |
| int phymode; |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_is_ready(priv)) { |
| IWL_WARNING("request scan called when driver not ready.\n"); |
| goto done; |
| } |
| |
| /* Make sure the scan wasn't cancelled before this queued work |
| * was given the chance to run... */ |
| if (!test_bit(STATUS_SCANNING, &priv->status)) |
| goto done; |
| |
| /* This should never be called or scheduled if there is currently |
| * a scan active in the hardware. */ |
| if (test_bit(STATUS_SCAN_HW, &priv->status)) { |
| IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. " |
| "Ignoring second request.\n"); |
| rc = -EIO; |
| goto done; |
| } |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n"); |
| goto done; |
| } |
| |
| if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n"); |
| goto done; |
| } |
| |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n"); |
| goto done; |
| } |
| |
| if (!test_bit(STATUS_READY, &priv->status)) { |
| IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n"); |
| goto done; |
| } |
| |
| if (!priv->scan_bands) { |
| IWL_DEBUG_HC("Aborting scan due to no requested bands\n"); |
| goto done; |
| } |
| |
| if (!priv->scan) { |
| priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) + |
| IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
| if (!priv->scan) { |
| rc = -ENOMEM; |
| goto done; |
| } |
| } |
| scan = priv->scan; |
| memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); |
| |
| scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; |
| scan->quiet_time = IWL_ACTIVE_QUIET_TIME; |
| |
| if (iwl_is_associated(priv)) { |
| u16 interval = 0; |
| u32 extra; |
| u32 suspend_time = 100; |
| u32 scan_suspend_time = 100; |
| unsigned long flags; |
| |
| IWL_DEBUG_INFO("Scanning while associated...\n"); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| interval = priv->beacon_int; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| scan->suspend_time = 0; |
| scan->max_out_time = cpu_to_le32(200 * 1024); |
| if (!interval) |
| interval = suspend_time; |
| /* |
| * suspend time format: |
| * 0-19: beacon interval in usec (time before exec.) |
| * 20-23: 0 |
| * 24-31: number of beacons (suspend between channels) |
| */ |
| |
| extra = (suspend_time / interval) << 24; |
| scan_suspend_time = 0xFF0FFFFF & |
| (extra | ((suspend_time % interval) * 1024)); |
| |
| scan->suspend_time = cpu_to_le32(scan_suspend_time); |
| IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n", |
| scan_suspend_time, interval); |
| } |
| |
| /* We should add the ability for user to lock to PASSIVE ONLY */ |
| if (priv->one_direct_scan) { |
| IWL_DEBUG_SCAN |
| ("Kicking off one direct scan for '%s'\n", |
| iwl_escape_essid(priv->direct_ssid, |
| priv->direct_ssid_len)); |
| scan->direct_scan[0].id = WLAN_EID_SSID; |
| scan->direct_scan[0].len = priv->direct_ssid_len; |
| memcpy(scan->direct_scan[0].ssid, |
| priv->direct_ssid, priv->direct_ssid_len); |
| direct_mask = 1; |
| } else if (!iwl_is_associated(priv) && priv->essid_len) { |
| scan->direct_scan[0].id = WLAN_EID_SSID; |
| scan->direct_scan[0].len = priv->essid_len; |
| memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len); |
| direct_mask = 1; |
| } else |
| direct_mask = 0; |
| |
| /* We don't build a direct scan probe request; the uCode will do |
| * that based on the direct_mask added to each channel entry */ |
| scan->tx_cmd.len = cpu_to_le16( |
| iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data, |
| IWL_MAX_SCAN_SIZE - sizeof(scan), 0)); |
| scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
| scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id; |
| scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| |
| /* flags + rate selection */ |
| |
| switch (priv->scan_bands) { |
| case 2: |
| scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
| scan->tx_cmd.rate = IWL_RATE_1M_PLCP; |
| scan->good_CRC_th = 0; |
| phymode = MODE_IEEE80211G; |
| break; |
| |
| case 1: |
| scan->tx_cmd.rate = IWL_RATE_6M_PLCP; |
| scan->good_CRC_th = IWL_GOOD_CRC_TH; |
| phymode = MODE_IEEE80211A; |
| break; |
| |
| default: |
| IWL_WARNING("Invalid scan band count\n"); |
| goto done; |
| } |
| |
| /* select Rx antennas */ |
| scan->flags |= iwl3945_get_antenna_flags(priv); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) |
| scan->filter_flags = RXON_FILTER_PROMISC_MSK; |
| |
| if (direct_mask) |
| IWL_DEBUG_SCAN |
| ("Initiating direct scan for %s.\n", |
| iwl_escape_essid(priv->essid, priv->essid_len)); |
| else |
| IWL_DEBUG_SCAN("Initiating indirect scan.\n"); |
| |
| scan->channel_count = |
| iwl_get_channels_for_scan( |
| priv, phymode, 1, /* active */ |
| direct_mask, |
| (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); |
| |
| cmd.len += le16_to_cpu(scan->tx_cmd.len) + |
| scan->channel_count * sizeof(struct iwl_scan_channel); |
| cmd.data = scan; |
| scan->len = cpu_to_le16(cmd.len); |
| |
| set_bit(STATUS_SCAN_HW, &priv->status); |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) |
| goto done; |
| |
| queue_delayed_work(priv->workqueue, &priv->scan_check, |
| IWL_SCAN_CHECK_WATCHDOG); |
| |
| mutex_unlock(&priv->mutex); |
| return; |
| |
| done: |
| /* inform mac80211 sacn aborted */ |
| queue_work(priv->workqueue, &priv->scan_completed); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl_bg_up(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, up); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| __iwl_up(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl_bg_restart(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| 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); |
| } |
| |
| static void iwl_bg_post_associate(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, |
| post_associate.work); |
| |
| int rc = 0; |
| struct ieee80211_conf *conf = NULL; |
| DECLARE_MAC_BUF(mac); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { |
| IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__); |
| return; |
| } |
| |
| |
| IWL_DEBUG_ASSOC("Associated as %d to: %s\n", |
| priv->assoc_id, |
| print_mac(mac, priv->active_rxon.bssid_addr)); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!priv->interface_id || !priv->is_open) { |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| iwl_scan_cancel_timeout(priv, 200); |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| iwl_setup_rxon_timing(priv); |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), &priv->rxon_timing); |
| if (rc) |
| IWL_WARNING("REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| |
| priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); |
| |
| IWL_DEBUG_ASSOC("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 == IEEE80211_IF_TYPE_IBSS) |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| } |
| |
| iwl_commit_rxon(priv); |
| |
| switch (priv->iw_mode) { |
| case IEEE80211_IF_TYPE_STA: |
| iwl_rate_scale_init(priv->hw, IWL_AP_ID); |
| break; |
| |
| case IEEE80211_IF_TYPE_IBSS: |
| |
| /* clear out the station table */ |
| iwl_clear_stations_table(priv); |
| |
| iwl_add_station(priv, BROADCAST_ADDR, 0, 0); |
| iwl_add_station(priv, priv->bssid, 0, 0); |
| iwl3945_sync_sta(priv, IWL_STA_ID, |
| (priv->phymode == MODE_IEEE80211A)? |
| IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP, |
| CMD_ASYNC); |
| iwl_rate_scale_init(priv->hw, IWL_STA_ID); |
| iwl_send_beacon_cmd(priv); |
| |
| break; |
| |
| default: |
| IWL_ERROR("%s Should not be called in %d mode\n", |
| __FUNCTION__, priv->iw_mode); |
| break; |
| } |
| |
| iwl_sequence_reset(priv); |
| |
| #ifdef CONFIG_IWLWIFI_QOS |
| iwl_activate_qos(priv, 0); |
| #endif /* CONFIG_IWLWIFI_QOS */ |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl_bg_abort_scan(struct work_struct *work) |
| { |
| struct iwl_priv *priv = container_of(work, struct iwl_priv, |
| abort_scan); |
| |
| if (!iwl_is_ready(priv)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| |
| set_bit(STATUS_SCAN_ABORTING, &priv->status); |
| iwl_send_scan_abort(priv); |
| |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl_bg_scan_completed(struct work_struct *work) |
| { |
| struct iwl_priv *priv = |
| container_of(work, struct iwl_priv, scan_completed); |
| |
| IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n"); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| ieee80211_scan_completed(priv->hw); |
| |
| /* Since setting the TXPOWER may have been deferred while |
| * performing the scan, fire one off */ |
| mutex_lock(&priv->mutex); |
| iwl_hw_reg_send_txpower(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| /***************************************************************************** |
| * |
| * mac80211 entry point functions |
| * |
| *****************************************************************************/ |
| |
| static int iwl_mac_start(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| /* we should be verifying the device is ready to be opened */ |
| mutex_lock(&priv->mutex); |
| |
| priv->is_open = 1; |
| |
| if (!iwl_is_rfkill(priv)) |
| ieee80211_start_queues(priv->hw); |
| |
| mutex_unlock(&priv->mutex); |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| static void iwl_mac_stop(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| |
| mutex_lock(&priv->mutex); |
| /* stop mac, cancel any scan request and clear |
| * RXON_FILTER_ASSOC_MSK BIT |
| */ |
| priv->is_open = 0; |
| iwl_scan_cancel_timeout(priv, 100); |
| cancel_delayed_work(&priv->post_associate); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| } |
| |
| static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| struct ieee80211_tx_control *ctl) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) { |
| IWL_DEBUG_MAC80211("leave - monitor\n"); |
| return -1; |
| } |
| |
| IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
| ctl->tx_rate); |
| |
| if (iwl_tx_skb(priv, skb, ctl)) |
| dev_kfree_skb_any(skb); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| static int iwl_mac_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type); |
| |
| if (priv->interface_id) { |
| IWL_DEBUG_MAC80211("leave - interface_id != 0\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->interface_id = conf->if_id; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (conf->mac_addr) { |
| IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr)); |
| memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); |
| } |
| |
| iwl_set_mode(priv, conf->type); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl_mac_config - mac80211 config callback |
| * |
| * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to |
| * be set inappropriately and the driver currently sets the hardware up to |
| * use it whenever needed. |
| */ |
| static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
| { |
| struct iwl_priv *priv = hw->priv; |
| const struct iwl_channel_info *ch_info; |
| unsigned long flags; |
| |
| mutex_lock(&priv->mutex); |
| IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel); |
| |
| if (!iwl_is_ready(priv)) { |
| IWL_DEBUG_MAC80211("leave - not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return -EIO; |
| } |
| |
| /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only |
| * what is exposed through include/ declrations */ |
| if (unlikely(!iwl_param_disable_hw_scan && |
| test_bit(STATUS_SCANNING, &priv->status))) { |
| IWL_DEBUG_MAC80211("leave - scanning\n"); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n", |
| conf->channel, conf->phymode); |
| IWL_DEBUG_MAC80211("leave - invalid channel\n"); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| mutex_unlock(&priv->mutex); |
| return -EINVAL; |
| } |
| |
| iwl_set_rxon_channel(priv, conf->phymode, conf->channel); |
| |
| iwl_set_flags_for_phymode(priv, conf->phymode); |
| |
| /* The list of supported rates and rate mask can be different |
| * for each phymode; since the phymode may have changed, reset |
| * the rate mask to what mac80211 lists */ |
| iwl_set_rate(priv); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| #ifdef IEEE80211_CONF_CHANNEL_SWITCH |
| if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) { |
| iwl_hw_channel_switch(priv, conf->channel); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| #endif |
| |
| iwl_radio_kill_sw(priv, !conf->radio_enabled); |
| |
| if (!conf->radio_enabled) { |
| IWL_DEBUG_MAC80211("leave - radio disabled\n"); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_MAC80211("leave - RF kill\n"); |
| mutex_unlock(&priv->mutex); |
| return -EIO; |
| } |
| |
| iwl_set_rate(priv); |
| |
| if (memcmp(&priv->active_rxon, |
| &priv->staging_rxon, sizeof(priv->staging_rxon))) |
| iwl_commit_rxon(priv); |
| else |
| IWL_DEBUG_INFO("No re-sending same RXON configuration.\n"); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| static void iwl_config_ap(struct iwl_priv *priv) |
| { |
| int rc = 0; |
| |
| if (priv->status & STATUS_EXIT_PENDING) |
| return; |
| |
| /* The following should be done only at AP bring up */ |
| if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) { |
| |
| /* RXON - unassoc (to set timing command) */ |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| |
| /* RXON Timing */ |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| iwl_setup_rxon_timing(priv); |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), &priv->rxon_timing); |
| if (rc) |
| IWL_WARNING("REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| /* 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 == IEEE80211_IF_TYPE_IBSS) |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_SLOT_MSK; |
| } |
| /* restore RXON assoc */ |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| iwl_add_station(priv, BROADCAST_ADDR, 0, 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 int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id, |
| struct ieee80211_if_conf *conf) |
| { |
| struct iwl_priv *priv = hw->priv; |
| DECLARE_MAC_BUF(mac); |
| unsigned long flags; |
| int rc; |
| |
| if (conf == NULL) |
| return -EIO; |
| |
| /* XXX: this MUST use conf->mac_addr */ |
| |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) && |
| (!conf->beacon || !conf->ssid_len)) { |
| IWL_DEBUG_MAC80211 |
| ("Leaving in AP mode because HostAPD is not ready.\n"); |
| return 0; |
| } |
| |
| mutex_lock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id); |
| if (conf->bssid) |
| IWL_DEBUG_MAC80211("bssid: %s\n", |
| print_mac(mac, conf->bssid)); |
| |
| /* |
| * very dubious code was here; the probe filtering flag is never set: |
| * |
| if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) && |
| !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) { |
| */ |
| if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { |
| IWL_DEBUG_MAC80211("leave - scanning\n"); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| |
| if (priv->interface_id != if_id) { |
| IWL_DEBUG_MAC80211("leave - interface_id != if_id\n"); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { |
| if (!conf->bssid) { |
| conf->bssid = priv->mac_addr; |
| memcpy(priv->bssid, priv->mac_addr, ETH_ALEN); |
| IWL_DEBUG_MAC80211("bssid was set to: %s\n", |
| print_mac(mac, conf->bssid)); |
| } |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| priv->ibss_beacon = conf->beacon; |
| } |
| |
| if (conf->bssid && !is_zero_ether_addr(conf->bssid) && |
| !is_multicast_ether_addr(conf->bssid)) { |
| /* If there is currently a HW scan going on in the background |
| * then we need to cancel it else the RXON below will fail. */ |
| if (iwl_scan_cancel_timeout(priv, 100)) { |
| IWL_WARNING("Aborted scan still in progress " |
| "after 100ms\n"); |
| IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); |
| mutex_unlock(&priv->mutex); |
| return -EAGAIN; |
| } |
| memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN); |
| |
| /* TODO: Audit driver for usage of these members and see |
| * if mac80211 deprecates them (priv->bssid looks like it |
| * shouldn't be there, but I haven't scanned the IBSS code |
| * to verify) - jpk */ |
| memcpy(priv->bssid, conf->bssid, ETH_ALEN); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) |
| iwl_config_ap(priv); |
| else { |
| rc = iwl_commit_rxon(priv); |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc) |
| iwl_add_station(priv, |
| priv->active_rxon.bssid_addr, 1, 0); |
| } |
| |
| } else { |
| iwl_scan_cancel_timeout(priv, 100); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!conf->ssid_len) |
| memset(priv->essid, 0, IW_ESSID_MAX_SIZE); |
| else |
| memcpy(priv->essid, conf->ssid, conf->ssid_len); |
| |
| priv->essid_len = conf->ssid_len; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| static void iwl_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed_flags, |
| unsigned int *total_flags, |
| int mc_count, struct dev_addr_list *mc_list) |
| { |
| /* |
| * XXX: dummy |
| * see also iwl_connection_init_rx_config |
| */ |
| *total_flags = 0; |
| } |
| |
| static void iwl_mac_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| mutex_lock(&priv->mutex); |
| |
| iwl_scan_cancel_timeout(priv, 100); |
| cancel_delayed_work(&priv->post_associate); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| |
| if (priv->interface_id == conf->if_id) { |
| priv->interface_id = 0; |
| memset(priv->bssid, 0, ETH_ALEN); |
| memset(priv->essid, 0, IW_ESSID_MAX_SIZE); |
| priv->essid_len = 0; |
| } |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| } |
| |
| #define IWL_DELAY_NEXT_SCAN (HZ*2) |
| static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) |
| { |
| int rc = 0; |
| unsigned long flags; |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| mutex_lock(&priv->mutex); |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| rc = -EIO; |
| IWL_DEBUG_MAC80211("leave - not ready or exit pending\n"); |
| goto out_unlock; |
| } |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */ |
| rc = -EIO; |
| IWL_ERROR("ERROR: APs don't scan\n"); |
| goto out_unlock; |
| } |
| |
| /* if we just finished scan ask for delay */ |
| if (priv->last_scan_jiffies && |
| time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, |
| jiffies)) { |
| rc = -EAGAIN; |
| goto out_unlock; |
| } |
| if (len) { |
| IWL_DEBUG_SCAN("direct scan for " |
| "%s [%d]\n ", |
| iwl_escape_essid(ssid, len), (int)len); |
| |
| priv->one_direct_scan = 1; |
| priv->direct_ssid_len = (u8) |
| min((u8) len, (u8) IW_ESSID_MAX_SIZE); |
| memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len); |
| } else |
| priv->one_direct_scan = 0; |
| |
| rc = iwl_scan_initiate(priv); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| out_unlock: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| mutex_unlock(&priv->mutex); |
| |
| return rc; |
| } |
| |
| static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
| const u8 *local_addr, const u8 *addr, |
| struct ieee80211_key_conf *key) |
| { |
| struct iwl_priv *priv = hw->priv; |
| int rc = 0; |
| u8 sta_id; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (!iwl_param_hwcrypto) { |
| IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_zero_ether_addr(addr)) |
| /* only support pairwise keys */ |
| return -EOPNOTSUPP; |
| |
| sta_id = iwl_hw_find_station(priv, addr); |
| if (sta_id == IWL_INVALID_STATION) { |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_MAC80211("leave - %s not in station map.\n", |
| print_mac(mac, addr)); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&priv->mutex); |
| |
| iwl_scan_cancel_timeout(priv, 100); |
| |
| switch (cmd) { |
| case SET_KEY: |
| rc = iwl_update_sta_key_info(priv, key, sta_id); |
| if (!rc) { |
| iwl_set_rxon_hwcrypto(priv, 1); |
| iwl_commit_rxon(priv); |
| key->hw_key_idx = sta_id; |
| IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n"); |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| } |
| break; |
| case DISABLE_KEY: |
| rc = iwl_clear_sta_key_info(priv, sta_id); |
| if (!rc) { |
| iwl_set_rxon_hwcrypto(priv, 0); |
| iwl_commit_rxon(priv); |
| IWL_DEBUG_MAC80211("disable hwcrypto key\n"); |
| } |
| break; |
| default: |
| rc = -EINVAL; |
| } |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| mutex_unlock(&priv->mutex); |
| |
| return rc; |
| } |
| |
| static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct iwl_priv *priv = hw->priv; |
| #ifdef CONFIG_IWLWIFI_QOS |
| unsigned long flags; |
| int q; |
| #endif /* CONFIG_IWL_QOS */ |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
| return -EIO; |
| } |
| |
| if (queue >= AC_NUM) { |
| IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue); |
| return 0; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_QOS |
| if (!priv->qos_data.qos_enable) { |
| priv->qos_data.qos_active = 0; |
| IWL_DEBUG_MAC80211("leave - qos not enabled\n"); |
| return 0; |
| } |
| q = AC_NUM - 1 - queue; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min); |
| priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max); |
| priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
| priv->qos_data.def_qos_parm.ac[q].edca_txop = |
| cpu_to_le16((params->burst_time * 100)); |
| |
| priv->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
| priv->qos_data.qos_active = 1; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| mutex_lock(&priv->mutex); |
| if (priv->iw_mode == IEEE80211_IF_TYPE_AP) |
| iwl_activate_qos(priv, 1); |
| else if (priv->assoc_id && iwl_is_associated(priv)) |
| iwl_activate_qos(priv, 0); |
| |
| mutex_unlock(&priv->mutex); |
| |
| #endif /*CONFIG_IWLWIFI_QOS */ |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw, |
| struct ieee80211_tx_queue_stats *stats) |
| { |
| struct iwl_priv *priv = hw->priv; |
| int i, avail; |
| struct iwl_tx_queue *txq; |
| struct iwl_queue *q; |
| unsigned long flags; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
| return -EIO; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| for (i = 0; i < AC_NUM; i++) { |
| txq = &priv->txq[i]; |
| q = &txq->q; |
| avail = iwl_queue_space(q); |
| |
| stats->data[i].len = q->n_window - avail; |
| stats->data[i].limit = q->n_window - q->high_mark; |
| stats->data[i].count = q->n_window; |
| |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return 0; |
| } |
| |
| static int iwl_mac_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| IWL_DEBUG_MAC80211("enter\n"); |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return 0; |
| } |
| |
| static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw) |
| { |
| IWL_DEBUG_MAC80211("enter\n"); |
| IWL_DEBUG_MAC80211("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("enter\n"); |
| |
| #ifdef CONFIG_IWLWIFI_QOS |
| iwl_reset_qos(priv); |
| #endif |
| cancel_delayed_work(&priv->post_associate); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->assoc_id = 0; |
| priv->assoc_capability = 0; |
| priv->call_post_assoc_from_beacon = 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->timestamp1 = 0; |
| priv->timestamp0 = 0; |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_STA)) |
| priv->beacon_int = 0; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| /* we are restarting association process |
| * clear RXON_FILTER_ASSOC_MSK bit |
| */ |
| if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { |
| iwl_scan_cancel_timeout(priv, 100); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_commit_rxon(priv); |
| } |
| |
| /* Per mac80211.h: This is only used in IBSS mode... */ |
| if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { |
| |
| IWL_DEBUG_MAC80211("leave - not in IBSS\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211("leave - not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| priv->only_active_channel = 0; |
| |
| iwl_set_rate(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| } |
| |
| static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb, |
| struct ieee80211_tx_control *control) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| |
| mutex_lock(&priv->mutex); |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211("leave - RF not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return -EIO; |
| } |
| |
| if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) { |
| IWL_DEBUG_MAC80211("leave - not IBSS\n"); |
| mutex_unlock(&priv->mutex); |
| return -EIO; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| priv->ibss_beacon = skb; |
| |
| priv->assoc_id = 0; |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| #ifdef CONFIG_IWLWIFI_QOS |
| iwl_reset_qos(priv); |
| #endif |
| |
| queue_work(priv->workqueue, &priv->post_associate.work); |
| |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| /***************************************************************************** |
| * |
| * sysfs attributes |
| * |
| *****************************************************************************/ |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| |
| /* |
| * The following adds a new attribute to the sysfs representation |
| * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) |
| * used for controlling the debug level. |
| * |
| * See the level definitions in iwl for details. |
| */ |
| |
| static ssize_t show_debug_level(struct device_driver *d, char *buf) |
| { |
| return sprintf(buf, "0x%08X\n", iwl_debug_level); |
| } |
| static ssize_t store_debug_level(struct device_driver *d, |
| const char *buf, size_t count) |
| { |
| char *p = (char *)buf; |
| u32 val; |
| |
| val = simple_strtoul(p, &p, 0); |
| if (p == buf) |
| printk(KERN_INFO DRV_NAME |
| ": %s is not in hex or decimal form.\n", buf); |
| else |
| iwl_debug_level = val; |
| |
| return strnlen(buf, count); |
| } |
| |
| static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| show_debug_level, store_debug_level); |
| |
| #endif /* CONFIG_IWLWIFI_DEBUG */ |
| |
| static ssize_t show_rf_kill(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| /* |
| * 0 - RF kill not enabled |
| * 1 - SW based RF kill active (sysfs) |
| * 2 - HW based RF kill active |
| * 3 - Both HW and SW based RF kill active |
| */ |
| struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
| int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) | |
| (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0); |
| |
| return sprintf(buf, "%i\n", val); |
| } |
| |
| static ssize_t store_rf_kill(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
| |
| mutex_lock(&priv->mutex); |
| iwl_radio_kill_sw(priv, buf[0] == '1'); |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill); |
| |
| 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", iwl_hw_get_temperature(priv)); |
| } |
| |
| static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); |
| |
| static ssize_t show_rs_window(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID); |
| } |
| static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, 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; |
| return sprintf(buf, "%d\n", priv->user_txpower_limit); |
| } |
| |
| 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; |
| char *p = (char *)buf; |
| u32 val; |
| |
| val = simple_strtoul(p, &p, 10); |
| if (p == buf) |
| printk(KERN_INFO DRV_NAME |
| ": %s is not in decimal form.\n", buf); |
| else |
| iwl_hw_reg_set_txpower(priv, val); |
| |
| 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; |
| u32 flags = simple_strtoul(buf, NULL, 0); |
| |
| 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_WARNING("Could not cancel scan.\n"); |
| else { |
| IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n", |
| flags); |
| priv->staging_rxon.flags = cpu_to_le32(flags); |
| iwl_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; |
| u32 filter_flags = simple_strtoul(buf, NULL, 0); |
| |
| 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_WARNING("Could not cancel scan.\n"); |
| else { |
| IWL_DEBUG_INFO("Committing rxon.filter_flags = " |
| "0x%04X\n", filter_flags); |
| priv->staging_rxon.filter_flags = |
| cpu_to_le32(filter_flags); |
| iwl_commit_rxon(priv); |
| } |
| } |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, |
| store_filter_flags); |
| |
| static ssize_t show_tune(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->phymode << 8) | |
| le16_to_cpu(priv->active_rxon.channel)); |
| } |
| |
| static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode); |
| |
| static ssize_t store_tune(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
| char *p = (char *)buf; |
| u16 tune = simple_strtoul(p, &p, 0); |
| u8 phymode = (tune >> 8) & 0xff; |
| u16 channel = tune & 0xff; |
| |
| IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel); |
| |
| mutex_lock(&priv->mutex); |
| if ((le16_to_cpu(priv->staging_rxon.channel) != channel) || |
| (priv->phymode != phymode)) { |
| const struct iwl_channel_info *ch_info; |
| |
| ch_info = iwl_get_channel_info(priv, phymode, channel); |
| if (!ch_info) { |
| IWL_WARNING("Requested invalid phymode/channel " |
| "combination: %d %d\n", phymode, channel); |
| mutex_unlock(&priv->mutex); |
| return -EINVAL; |
| } |
| |
| /* Cancel any currently running scans... */ |
| if (iwl_scan_cancel_timeout(priv, 100)) |
| IWL_WARNING("Could not cancel scan.\n"); |
| else { |
| IWL_DEBUG_INFO("Committing phymode and " |
| "rxon.channel = %d %d\n", |
| phymode, channel); |
| |
| iwl_set_rxon_channel(priv, phymode, channel); |
| iwl_set_flags_for_phymode(priv, phymode); |
| |
| iwl_set_rate(priv); |
| iwl_commit_rxon(priv); |
| } |
| } |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune); |
| |
| #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT |
| |
| static ssize_t show_measurement(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| struct iwl_spectrum_notification measure_report; |
| u32 size = sizeof(measure_report), len = 0, ofs = 0; |
| u8 *data = (u8 *) & measure_report; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!(priv->measurement_status & MEASUREMENT_READY)) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return 0; |
| } |
| memcpy(&measure_report, &priv->measure_report, size); |
| priv->measurement_status = 0; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| 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 ssize_t store_measurement(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| struct ieee80211_measurement_params params = { |
| .channel = le16_to_cpu(priv->active_rxon.channel), |
| .start_time = cpu_to_le64(priv->last_tsf), |
| .duration = cpu_to_le16(1), |
| }; |
| u8 type = IWL_MEASURE_BASIC; |
| u8 buffer[32]; |
| u8 channel; |
| |
| if (count) { |
| char *p = buffer; |
| strncpy(buffer, buf, min(sizeof(buffer), count)); |
| channel = simple_strtoul(p, NULL, 0); |
| if (channel) |
| params.channel = channel; |
| |
| p = buffer; |
| while (*p && *p != ' ') |
| p++; |
| if (*p) |
| type = simple_strtoul(p + 1, NULL, 0); |
| } |
| |
| IWL_DEBUG_INFO("Invoking measurement of type %d on " |
| "channel %d (for '%s')\n", type, params.channel, buf); |
| iwl_get_measurement(priv, ¶ms, type); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, |
| show_measurement, store_measurement); |
| #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */ |
| |
| static ssize_t show_rate(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| if (priv->iw_mode == IEEE80211_IF_TYPE_STA) |
| i = priv->stations[IWL_AP_ID].current_rate.s.rate; |
| else |
| i = priv->stations[IWL_STA_ID].current_rate.s.rate; |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| i = iwl_rate_index_from_plcp(i); |
| if (i == -1) |
| return sprintf(buf, "0\n"); |
| |
| return sprintf(buf, "%d%s\n", |
| (iwl_rates[i].ieee >> 1), |
| (iwl_rates[i].ieee & 0x1) ? ".5" : ""); |
| } |
| |
| static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL); |
| |
| static ssize_t store_retry_rate(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| priv->retry_rate = simple_strtoul(buf, NULL, 0); |
| if (priv->retry_rate <= 0) |
| priv->retry_rate = 1; |
| |
| return count; |
| } |
| |
| static ssize_t show_retry_rate(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| return sprintf(buf, "%d", priv->retry_rate); |
| } |
| |
| static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate, |
| store_retry_rate); |
| |
| 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 rc; |
| int mode; |
| |
| mode = simple_strtoul(buf, NULL, 0); |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_is_ready(priv)) { |
| rc = -EAGAIN; |
| goto out; |
| } |
| |
| if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC)) |
| mode = IWL_POWER_AC; |
| else |
| mode |= IWL_POWER_ENABLED; |
| |
| if (mode != priv->power_mode) { |
| rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode)); |
| if (rc) { |
| IWL_DEBUG_MAC80211("failed setting power mode.\n"); |
| goto out; |
| } |
| priv->power_mode = mode; |
| } |
| |
| rc = count; |
| |
| out: |
| mutex_unlock(&priv->mutex); |
| return rc; |
| } |
| |
| #define MAX_WX_STRING 80 |
| |
| /* Values are in microsecond */ |
| static const s32 timeout_duration[] = { |
| 350000, |
| 250000, |
| 75000, |
| 37000, |
| 25000, |
| }; |
| static const s32 period_duration[] = { |
| 400000, |
| 700000, |
| 1000000, |
| 1000000, |
| 1000000 |
| }; |
| |
| static ssize_t show_power_level(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| int level = IWL_POWER_LEVEL(priv->power_mode); |
| char *p = buf; |
| |
| p += sprintf(p, "%d ", level); |
| switch (level) { |
| case IWL_POWER_MODE_CAM: |
| case IWL_POWER_AC: |
| p += sprintf(p, "(AC)"); |
| break; |
| case IWL_POWER_BATTERY: |
| p += sprintf(p, "(BATTERY)"); |
| break; |
| default: |
| p += sprintf(p, |
| "(Timeout %dms, Period %dms)", |
| timeout_duration[level - 1] / 1000, |
| period_duration[level - 1] / 1000); |
| } |
| |
| if (!(priv->power_mode & IWL_POWER_ENABLED)) |
| p += sprintf(p, " OFF\n"); |
| else |
| 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_channels(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| int len = 0, i; |
| struct ieee80211_channel *channels = NULL; |
| const struct ieee80211_hw_mode *hw_mode = NULL; |
| int count = 0; |
| |
| if (!iwl_is_ready(priv)) |
| return -EAGAIN; |
| |
| hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G); |
| if (!hw_mode) |
| hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B); |
| if (hw_mode) { |
| channels = hw_mode->channels; |
| count = hw_mode->num_channels; |
| } |
| |
| len += |
| sprintf(&buf[len], |
| "Displaying %d channels in 2.4GHz band " |
| "(802.11bg):\n", count); |
| |
| for (i = 0; i < count; i++) |
| len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n", |
| channels[i].chan, |
| channels[i].power_level, |
| channels[i]. |
| flag & IEEE80211_CHAN_W_RADAR_DETECT ? |
| " (IEEE 802.11h required)" : "", |
| (!(channels[i].flag & IEEE80211_CHAN_W_IBSS) |
| || (channels[i]. |
| flag & |
| IEEE80211_CHAN_W_RADAR_DETECT)) ? "" : |
| ", IBSS", |
| channels[i]. |
| flag & IEEE80211_CHAN_W_ACTIVE_SCAN ? |
| "active/passive" : "passive only"); |
| |
| hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A); |
| if (hw_mode) { |
| channels = hw_mode->channels; |
| count = hw_mode->num_channels; |
| } else { |
| channels = NULL; |
| count = 0; |
| } |
| |
| len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band " |
| "(802.11a):\n", count); |
| |
| for (i = 0; i < count; i++) |
| len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n", |
| channels[i].chan, |
| channels[i].power_level, |
| channels[i]. |
| flag & IEEE80211_CHAN_W_RADAR_DETECT ? |
| " (IEEE 802.11h required)" : "", |
| (!(channels[i].flag & IEEE80211_CHAN_W_IBSS) |
| || (channels[i]. |
| flag & |
| IEEE80211_CHAN_W_RADAR_DETECT)) ? "" : |
| ", IBSS", |
| channels[i]. |
| flag & IEEE80211_CHAN_W_ACTIVE_SCAN ? |
| "active/passive" : "passive only"); |
| |
| return len; |
| } |
| |
| static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL); |
| |
| 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); |
| mutex_unlock(&priv->mutex); |
| |
| if (rc) { |
| len = sprintf(buf, |
| "Error sending statistics request: 0x%08X\n", rc); |
| return len; |
| } |
| |
| while (size && (PAGE_SIZE - len)) { |
| hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
| PAGE_SIZE - len, 1); |
| len = strlen(buf); |
| if (PAGE_SIZE - len) |
| buf[len++] = '\n'; |
| |
| ofs += 16; |
| size -= min(size, 16U); |
| } |
| |
| return len; |
| } |
| |
| static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); |
| |
| static ssize_t show_antenna(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", priv->antenna); |
| } |
| |
| static ssize_t store_antenna(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int ant; |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| if (count == 0) |
| return 0; |
| |
| if (sscanf(buf, "%1i", &ant) != 1) { |
| IWL_DEBUG_INFO("not in hex or decimal form.\n"); |
| return count; |
| } |
| |
| if ((ant >= 0) && (ant <= 2)) { |
| IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant); |
| priv->antenna = (enum iwl_antenna)ant; |
| } else |
| IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant); |
| |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna); |
| |
| static ssize_t show_status(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, "0x%08x\n", (int)priv->status); |
| } |
| |
| static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
| |
| static ssize_t dump_error_log(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| char *p = (char *)buf; |
| |
| if (p[0] == '1') |
| iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data); |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log); |
| |
| static ssize_t dump_event_log(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| char *p = (char *)buf; |
| |
| if (p[0] == '1') |
| iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data); |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log); |
| |
| /***************************************************************************** |
| * |
| * driver setup and teardown |
| * |
| *****************************************************************************/ |
| |
| static void iwl_setup_deferred_work(struct iwl_priv *priv) |
| { |
| priv->workqueue = create_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->scan_completed, iwl_bg_scan_completed); |
| INIT_WORK(&priv->request_scan, iwl_bg_request_scan); |
| INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan); |
| INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill); |
| INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); |
| INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate); |
| INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start); |
| INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start); |
| INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check); |
| |
| iwl_hw_setup_deferred_work(priv); |
| |
| tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) |
| iwl_irq_tasklet, (unsigned long)priv); |
| } |
| |
| static void iwl_cancel_deferred_work(struct iwl_priv *priv) |
| { |
| iwl_hw_cancel_deferred_work(priv); |
| |
| cancel_delayed_work_sync(&priv->init_alive_start); |
| cancel_delayed_work(&priv->scan_check); |
| cancel_delayed_work(&priv->alive_start); |
| cancel_delayed_work(&priv->post_associate); |
| cancel_work_sync(&priv->beacon_update); |
| } |
| |
| static struct attribute *iwl_sysfs_entries[] = { |
| &dev_attr_antenna.attr, |
| &dev_attr_channels.attr, |
| &dev_attr_dump_errors.attr, |
| &dev_attr_dump_events.attr, |
| &dev_attr_flags.attr, |
| &dev_attr_filter_flags.attr, |
| #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT |
| &dev_attr_measurement.attr, |
| #endif |
| &dev_attr_power_level.attr, |
| &dev_attr_rate.attr, |
| &dev_attr_retry_rate.attr, |
| &dev_attr_rf_kill.attr, |
| &dev_attr_rs_window.attr, |
| &dev_attr_statistics.attr, |
| &dev_attr_status.attr, |
| &dev_attr_temperature.attr, |
| &dev_attr_tune.attr, |
| &dev_attr_tx_power.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, |
| .get_stats = iwl_mac_get_stats, |
| .get_tx_stats = iwl_mac_get_tx_stats, |
| .conf_tx = iwl_mac_conf_tx, |
| .get_tsf = iwl_mac_get_tsf, |
| .reset_tsf = iwl_mac_reset_tsf, |
| .beacon_update = iwl_mac_beacon_update, |
| .hw_scan = iwl_mac_hw_scan |
| }; |
| |
| static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| int err = 0; |
| u32 pci_id; |
| struct iwl_priv *priv; |
| struct ieee80211_hw *hw; |
| int i; |
| |
| if (iwl_param_disable_hw_scan) { |
| IWL_DEBUG_INFO("Disabling hw_scan\n"); |
| iwl_hw_ops.hw_scan = NULL; |
| } |
| |
| if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) || |
| (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) { |
| IWL_ERROR("invalid queues_num, should be between %d and %d\n", |
| IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES); |
| err = -EINVAL; |
| goto out; |
| } |
| |
| /* mac80211 allocates memory for this device instance, including |
| * space for this driver's private structure */ |
| hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops); |
| if (hw == NULL) { |
| IWL_ERROR("Can not allocate network device\n"); |
| err = -ENOMEM; |
| goto out; |
| } |
| SET_IEEE80211_DEV(hw, &pdev->dev); |
| |
| hw->rate_control_algorithm = "iwl-3945-rs"; |
| |
| IWL_DEBUG_INFO("*** LOAD DRIVER ***\n"); |
| priv = hw->priv; |
| priv->hw = hw; |
| |
| priv->pci_dev = pdev; |
| priv->antenna = (enum iwl_antenna)iwl_param_antenna; |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| iwl_debug_level = iwl_param_debug; |
| atomic_set(&priv->restrict_refcnt, 0); |
| #endif |
| priv->retry_rate = 1; |
| |
| priv->ibss_beacon = NULL; |
| |
| /* Tell mac80211 and its clients (e.g. Wireless Extensions) |
| * the range of signal quality values that we'll provide. |
| * Negative values for level/noise indicate that we'll provide dBm. |
| * For WE, at least, non-0 values here *enable* display of values |
| * in app (iwconfig). */ |
| hw->max_rssi = -20; /* signal level, negative indicates dBm */ |
| hw->max_noise = -20; /* noise level, negative indicates dBm */ |
| hw->max_signal = 100; /* link quality indication (%) */ |
| |
| /* Tell mac80211 our Tx characteristics */ |
| hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE; |
| |
| hw->queues = 4; |
| |
| spin_lock_init(&priv->lock); |
| spin_lock_init(&priv->power_data.lock); |
| spin_lock_init(&priv->sta_lock); |
| spin_lock_init(&priv->hcmd_lock); |
| |
| for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) |
| INIT_LIST_HEAD(&priv->ibss_mac_hash[i]); |
| |
| INIT_LIST_HEAD(&priv->free_frames); |
| |
| mutex_init(&priv->mutex); |
| if (pci_enable_device(pdev)) { |
| err = -ENODEV; |
| goto out_ieee80211_free_hw; |
| } |
| |
| pci_set_master(pdev); |
| |
| iwl_clear_stations_table(priv); |
| |
| priv->data_retry_limit = -1; |
| priv->ieee_channels = NULL; |
| priv->ieee_rates = NULL; |
| priv->phymode = -1; |
| |
| err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| if (err) { |
| printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n"); |
| goto out_pci_disable_device; |
| } |
| |
| pci_set_drvdata(pdev, priv); |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) |
| goto out_pci_disable_device; |
| /* We disable the RETRY_TIMEOUT register (0x41) to keep |
| * PCI Tx retries from interfering with C3 CPU state */ |
| pci_write_config_byte(pdev, 0x41, 0x00); |
| priv->hw_base = pci_iomap(pdev, 0, 0); |
| if (!priv->hw_base) { |
| err = -ENODEV; |
| goto out_pci_release_regions; |
| } |
| |
| IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n", |
| (unsigned long long) pci_resource_len(pdev, 0)); |
| IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base); |
| |
| /* Initialize module parameter values here */ |
| |
| if (iwl_param_disable) { |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| IWL_DEBUG_INFO("Radio disabled.\n"); |
| } |
| |
| priv->iw_mode = IEEE80211_IF_TYPE_STA; |
| |
| pci_id = |
| (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device; |
| |
| switch (pci_id) { |
| case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */ |
| case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */ |
| case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */ |
| case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */ |
| priv->is_abg = 0; |
| break; |
| |
| /* |
| * Rest are assumed ABG SKU -- if this is not the |
| * case then the card will get the wrong 'Detected' |
| * line in the kernel log however the code that |
| * initializes the GEO table will detect no A-band |
| * channels and remove the is_abg mask. |
| */ |
| default: |
| priv->is_abg = 1; |
| break; |
| } |
| |
| printk(KERN_INFO DRV_NAME |
| ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n", |
| priv->is_abg ? "A" : ""); |
| |
| /* Device-specific setup */ |
| if (iwl_hw_set_hw_setting(priv)) { |
| IWL_ERROR("failed to set hw settings\n"); |
| mutex_unlock(&priv->mutex); |
| goto out_iounmap; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_QOS |
| if (iwl_param_qos_enable) |
| priv->qos_data.qos_enable = 1; |
| |
| iwl_reset_qos(priv); |
| |
| priv->qos_data.qos_active = 0; |
| priv->qos_data.qos_cap.val = 0; |
| #endif /* CONFIG_IWLWIFI_QOS */ |
| |
| iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6); |
| iwl_setup_deferred_work(priv); |
| iwl_setup_rx_handlers(priv); |
| |
| priv->rates_mask = IWL_RATES_MASK; |
| /* If power management is turned on, default to AC mode */ |
| priv->power_mode = IWL_POWER_AC; |
| priv->user_txpower_limit = IWL_DEFAULT_TX_POWER; |
| |
| pci_enable_msi(pdev); |
| |
| err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv); |
| if (err) { |
| IWL_ERROR("Error allocating IRQ %d\n", pdev->irq); |
| goto out_disable_msi; |
| } |
| |
| mutex_lock(&priv->mutex); |
| |
| err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group); |
| if (err) { |
| IWL_ERROR("failed to create sysfs device attributes\n"); |
| mutex_unlock(&priv->mutex); |
| goto out_release_irq; |
| } |
| |
| /* fetch ucode file from disk, alloc and copy to bus-master buffers ... |
| * ucode filename and max sizes are card-specific. */ |
| err = iwl_read_ucode(priv); |
| if (err) { |
| IWL_ERROR("Could not read microcode: %d\n", err); |
| mutex_unlock(&priv->mutex); |
| goto out_pci_alloc; |
| } |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_INFO("Queing UP work.\n"); |
| |
| queue_work(priv->workqueue, &priv->up); |
| |
| return 0; |
| |
| out_pci_alloc: |
| iwl_dealloc_ucode_pci(priv); |
| |
| sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); |
| |
| out_release_irq: |
| free_irq(pdev->irq, priv); |
| |
| out_disable_msi: |
| pci_disable_msi(pdev); |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| iwl_unset_hw_setting(priv); |
| |
| out_iounmap: |
| pci_iounmap(pdev, priv->hw_base); |
| out_pci_release_regions: |
| pci_release_regions(pdev); |
| out_pci_disable_device: |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| out_ieee80211_free_hw: |
| ieee80211_free_hw(priv->hw); |
| out: |
| return err; |
| } |
| |
| static void iwl_pci_remove(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| struct list_head *p, *q; |
| int i; |
| |
| if (!priv) |
| return; |
| |
| IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n"); |
| |
| mutex_lock(&priv->mutex); |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| __iwl_down(priv); |
| mutex_unlock(&priv->mutex); |
| |
| /* Free MAC hash list for ADHOC */ |
| for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) { |
| list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) { |
| list_del(p); |
| kfree(list_entry(p, struct iwl_ibss_seq, list)); |
| } |
| } |
| |
| sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group); |
| |
| iwl_dealloc_ucode_pci(priv); |
| |
| if (priv->rxq.bd) |
| iwl_rx_queue_free(priv, &priv->rxq); |
| iwl_hw_txq_ctx_free(priv); |
| |
| iwl_unset_hw_setting(priv); |
| iwl_clear_stations_table(priv); |
| |
| if (priv->mac80211_registered) { |
| ieee80211_unregister_hw(priv->hw); |
| iwl_rate_control_unregister(priv->hw); |
| } |
| |
| /*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(pdev->irq, priv); |
| pci_disable_msi(pdev); |
| pci_iounmap(pdev, priv->hw_base); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| |
| kfree(priv->channel_info); |
| |
| kfree(priv->ieee_channels); |
| kfree(priv->ieee_rates); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| ieee80211_free_hw(priv->hw); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| |
| mutex_lock(&priv->mutex); |
| |
| set_bit(STATUS_IN_SUSPEND, &priv->status); |
| |
| /* Take down the device; powers it off, etc. */ |
| __iwl_down(priv); |
| |
| if (priv->mac80211_registered) |
| ieee80211_stop_queues(priv->hw); |
| |
| pci_save_state(pdev); |
| pci_disable_device(pdev); |
| pci_set_power_state(pdev, PCI_D3hot); |
| |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| static void iwl_resume(struct iwl_priv *priv) |
| { |
| unsigned long flags; |
| |
| /* The following it a temporary work around due to the |
| * suspend / resume not fully initializing the NIC correctly. |
| * Without all of the following, resume will not attempt to take |
| * down the NIC (it shouldn't really need to) and will just try |
| * and bring the NIC back up. However that fails during the |
| * ucode verification process. This then causes iwl_down to be |
| * called *after* iwl_hw_nic_init() has succeeded -- which |
| * then lets the next init sequence succeed. So, we've |
| * replicated all of that NIC init code here... */ |
| |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| |
| iwl_hw_nic_init(priv); |
| |
| 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); |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| 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); |
| |
| /* tell the device to stop sending interrupts */ |
| iwl_disable_interrupts(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| |
| if (!iwl_grab_restricted_access(priv)) { |
| iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| iwl_release_restricted_access(priv); |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| udelay(5); |
| |
| iwl_hw_nic_reset(priv); |
| |
| /* Bring the device back up */ |
| clear_bit(STATUS_IN_SUSPEND, &priv->status); |
| queue_work(priv->workqueue, &priv->up); |
| } |
| |
| static int iwl_pci_resume(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| int err; |
| |
| printk(KERN_INFO "Coming out of suspend...\n"); |
| |
| mutex_lock(&priv->mutex); |
| |
| pci_set_power_state(pdev, PCI_D0); |
| err = pci_enable_device(pdev); |
| pci_restore_state(pdev); |
| |
| /* |
| * Suspend/Resume resets the PCI configuration space, so we have to |
| * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries |
| * from interfering with C3 CPU state. pci_restore_state won't help |
| * here since it only restores the first 64 bytes pci config header. |
| */ |
| pci_write_config_byte(pdev, 0x41, 0x00); |
| |
| iwl_resume(priv); |
| mutex_unlock(&priv->mutex); |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_PM */ |
| |
| /***************************************************************************** |
| * |
| * driver and module entry point |
| * |
| *****************************************************************************/ |
| |
| 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 = pci_register_driver(&iwl_driver); |
| if (ret) { |
| IWL_ERROR("Unable to initialize PCI module\n"); |
| return ret; |
| } |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level); |
| if (ret) { |
| IWL_ERROR("Unable to create driver sysfs file\n"); |
| pci_unregister_driver(&iwl_driver); |
| return ret; |
| } |
| #endif |
| |
| return ret; |
| } |
| |
| static void __exit iwl_exit(void) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level); |
| #endif |
| pci_unregister_driver(&iwl_driver); |
| } |
| |
| module_param_named(antenna, iwl_param_antenna, int, 0444); |
| MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); |
| module_param_named(disable, iwl_param_disable, int, 0444); |
| MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])"); |
| module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444); |
| MODULE_PARM_DESC(hwcrypto, |
| "using hardware crypto engine (default 0 [software])\n"); |
| module_param_named(debug, iwl_param_debug, int, 0444); |
| MODULE_PARM_DESC(debug, "debug output mask"); |
| module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444); |
| MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)"); |
| |
| module_param_named(queues_num, iwl_param_queues_num, int, 0444); |
| MODULE_PARM_DESC(queues_num, "number of hw queues."); |
| |
| /* QoS */ |
| module_param_named(qos_enable, iwl_param_qos_enable, int, 0444); |
| MODULE_PARM_DESC(qos_enable, "enable all QoS functionality"); |
| |
| module_exit(iwl_exit); |
| module_init(iwl_init); |