| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2008 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 |
| * |
| *****************************************************************************/ |
| |
| #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/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #include "iwl-eeprom.h" |
| #include "iwl-dev.h" |
| #include "iwl-core.h" |
| #include "iwl-io.h" |
| #include "iwl-helpers.h" |
| #include "iwl-sta.h" |
| #include "iwl-calib.h" |
| |
| static int iwl4965_tx_queue_update_write_ptr(struct iwl_priv *priv, |
| struct iwl_tx_queue *txq); |
| |
| /****************************************************************************** |
| * |
| * module boiler plate |
| * |
| ******************************************************************************/ |
| |
| /* |
| * 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) Wireless WiFi Link 4965AGN driver for Linux" |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| #define VD "d" |
| #else |
| #define VD |
| #endif |
| |
| #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
| #define VS "s" |
| #else |
| #define VS |
| #endif |
| |
| #define DRV_VERSION IWLWIFI_VERSION VD VS |
| |
| |
| MODULE_DESCRIPTION(DRV_DESCRIPTION); |
| MODULE_VERSION(DRV_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT); |
| 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_supported_band *iwl_get_hw_mode( |
| struct iwl_priv *priv, enum ieee80211_band band) |
| { |
| return priv->hw->wiphy->bands[band]; |
| } |
| |
| static int iwl4965_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 *iwl4965_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 (iwl4965_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; |
| } |
| |
| |
| /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** |
| * DMA services |
| * |
| * Theory of operation |
| * |
| * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer |
| * of buffer descriptors, each of which points to one or more data buffers for |
| * the device to read from or fill. Driver and device exchange status of each |
| * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty |
| * entries in each circular buffer, to protect against confusing empty and full |
| * queue states. |
| * |
| * The device reads or writes the data in the queues via the device's several |
| * DMA/FIFO channels. Each queue is mapped to a single DMA channel. |
| * |
| * 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 4965 operates with up to 17 queues: One receive queue, one transmit |
| * queue (#4) for sending commands to the device firmware, and 15 other |
| * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels. |
| * |
| * See more detailed info in iwl-4965-hw.h. |
| ***************************************************/ |
| |
| int iwl4965_queue_space(const struct iwl4965_queue *q) |
| { |
| int s = q->read_ptr - q->write_ptr; |
| |
| if (q->read_ptr > q->write_ptr) |
| 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; |
| } |
| |
| |
| static inline int x2_queue_used(const struct iwl4965_queue *q, int i) |
| { |
| return q->write_ptr > q->read_ptr ? |
| (i >= q->read_ptr && i < q->write_ptr) : |
| !(i < q->read_ptr && i >= q->write_ptr); |
| } |
| |
| static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge) |
| { |
| /* This is for scan command, the big buffer at end of command array */ |
| if (is_huge) |
| return q->n_window; /* must be power of 2 */ |
| |
| /* Otherwise, use normal size buffers */ |
| return index & (q->n_window - 1); |
| } |
| |
| const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| |
| /*************** STATION TABLE MANAGEMENT **** |
| * mac80211 should be examined to determine if sta_info is duplicating |
| * the functionality provided here |
| */ |
| |
| /**************************************************************/ |
| |
| #if 0 /* temporary disable till we add real remove station */ |
| /** |
| * iwl4965_remove_station - Remove driver's knowledge of station. |
| * |
| * NOTE: This does not remove station from device's station table. |
| */ |
| static u8 iwl4965_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_params.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_params.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 |
| |
| /** |
| * iwl4965_add_station_flags - Add station to tables in driver and device |
| */ |
| u8 iwl4965_add_station_flags(struct iwl_priv *priv, const u8 *addr, |
| int is_ap, u8 flags, void *ht_data) |
| { |
| int i; |
| int index = IWL_INVALID_STATION; |
| struct iwl_station_entry *station; |
| unsigned long flags_spin; |
| DECLARE_MAC_BUF(mac); |
| |
| 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_params.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_params.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 two conditions have the same outcome, but keep them separate |
| since they have different meanings */ |
| 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++; |
| |
| /* Set up the REPLY_ADD_STA command to send to device */ |
| 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; |
| |
| #ifdef CONFIG_IWL4965_HT |
| /* BCAST station and IBSS stations do not work in HT mode */ |
| if (index != priv->hw_params.bcast_sta_id && |
| priv->iw_mode != IEEE80211_IF_TYPE_IBSS) |
| iwl4965_set_ht_add_station(priv, index, |
| (struct ieee80211_ht_info *) ht_data); |
| #endif /*CONFIG_IWL4965_HT*/ |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| |
| /* Add station to device's station table */ |
| iwl_send_add_sta(priv, &station->sta, flags); |
| return index; |
| |
| } |
| |
| |
| |
| /*************** HOST COMMAND QUEUE FUNCTIONS *****/ |
| |
| /** |
| * iwl4965_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. |
| */ |
| int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
| { |
| struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; |
| struct iwl4965_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 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_is_rfkill(priv)) { |
| IWL_DEBUG_INFO("Not sending command - RF KILL"); |
| return -EIO; |
| } |
| |
| if (iwl4965_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->write_ptr]; |
| memset(tfd, 0, sizeof(*tfd)); |
| |
| control_flags = (u32 *) tfd; |
| |
| idx = get_cmd_index(q, q->write_ptr, 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->write_ptr)); |
| 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); |
| iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); |
| |
| 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->write_ptr, idx, IWL_CMD_QUEUE_NUM); |
| |
| txq->need_update = 1; |
| |
| /* Set up entry in queue's byte count circular buffer */ |
| priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0); |
| |
| /* Increment and update queue's write index */ |
| q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
| ret = iwl4965_tx_queue_update_write_ptr(priv, txq); |
| |
| spin_unlock_irqrestore(&priv->hcmd_lock, flags); |
| return ret ? ret : idx; |
| } |
| |
| static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) |
| { |
| struct iwl4965_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; |
| |
| } |
| |
| /** |
| * iwl4965_rxon_add_station - add station into station table. |
| * |
| * there is only one AP station with id= IWL_AP_ID |
| * NOTE: mutex must be held before calling this fnction |
| */ |
| static int iwl4965_rxon_add_station(struct iwl_priv *priv, |
| const u8 *addr, int is_ap) |
| { |
| u8 sta_id; |
| |
| /* Add station to device's station table */ |
| #ifdef CONFIG_IWL4965_HT |
| struct ieee80211_conf *conf = &priv->hw->conf; |
| struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf; |
| |
| if ((is_ap) && |
| (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) && |
| (priv->iw_mode == IEEE80211_IF_TYPE_STA)) |
| sta_id = iwl4965_add_station_flags(priv, addr, is_ap, |
| 0, cur_ht_config); |
| else |
| #endif /* CONFIG_IWL4965_HT */ |
| sta_id = iwl4965_add_station_flags(priv, addr, is_ap, |
| 0, NULL); |
| |
| /* Set up default rate scaling table in device's station table */ |
| iwl4965_add_station(priv, addr, is_ap); |
| |
| return sta_id; |
| } |
| |
| /** |
| * iwl4965_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 iwl4965_check_rxon_cmd(struct iwl4965_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 (error) |
| IWL_WARNING("Tuning to channel %d\n", |
| le16_to_cpu(rxon->channel)); |
| |
| if (error) { |
| IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /** |
| * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
| * @priv: staging_rxon is compared to active_rxon |
| * |
| * If the RXON structure is changing enough to require a new tune, |
| * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that |
| * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. |
| */ |
| static int iwl4965_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.ofdm_ht_single_stream_basic_rates != |
| priv->active_rxon.ofdm_ht_single_stream_basic_rates) || |
| (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates != |
| priv->active_rxon.ofdm_ht_dual_stream_basic_rates) || |
| (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) || |
| (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; |
| } |
| |
| /** |
| * iwl4965_commit_rxon - commit staging_rxon to hardware |
| * |
| * The RXON command in staging_rxon is committed to the hardware and |
| * the active_rxon structure is updated with the new data. This |
| * function correctly transitions out of the RXON_ASSOC_MSK state if |
| * a HW tune is required based on the RXON structure changes. |
| */ |
| static int iwl4965_commit_rxon(struct iwl_priv *priv) |
| { |
| /* cast away the const for active_rxon in this function */ |
| struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon; |
| DECLARE_MAC_BUF(mac); |
| int rc = 0; |
| |
| if (!iwl_is_alive(priv)) |
| return -1; |
| |
| /* always get timestamp with Rx frame */ |
| priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK; |
| |
| rc = iwl4965_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 |
| * iwl4965_rxon_assoc_cmd which is used to reconfigure filter |
| * and other flags for the current radio configuration. */ |
| if (!iwl4965_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; |
| } |
| |
| /* station table will be cleared */ |
| priv->assoc_station_added = 0; |
| |
| /* If we are currently associated and the new config requires |
| * an RXON_ASSOC and the new config wants the associated mask enabled, |
| * we must clear the associated from the active configuration |
| * before we apply the new config */ |
| if (iwl_is_associated(priv) && |
| (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 iwl4965_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)); |
| |
| iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto); |
| /* Apply the new configuration */ |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON, |
| sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon); |
| if (rc) { |
| IWL_ERROR("Error setting new configuration (%d).\n", rc); |
| return rc; |
| } |
| |
| iwlcore_clear_stations_table(priv); |
| |
| if (!priv->error_recovering) |
| priv->start_calib = 0; |
| |
| iwl_init_sensitivity(priv); |
| |
| memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon)); |
| |
| /* 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 = iwl4965_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 (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 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 (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1) |
| == IWL_INVALID_STATION) { |
| IWL_ERROR("Error adding AP address for transmit.\n"); |
| return -EIO; |
| } |
| priv->assoc_station_added = 1; |
| if (priv->default_wep_key && |
| iwl_send_static_wepkey_cmd(priv, 0)) |
| IWL_ERROR("Could not send WEP static key.\n"); |
| } |
| |
| return 0; |
| } |
| |
| void iwl4965_update_chain_flags(struct iwl_priv *priv) |
| { |
| |
| iwl_set_rxon_chain(priv); |
| iwl4965_commit_rxon(priv); |
| } |
| |
| static int iwl4965_send_bt_config(struct iwl_priv *priv) |
| { |
| struct iwl4965_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 iwl4965_bt_cmd), &bt_cmd); |
| } |
| |
| static int iwl4965_send_scan_abort(struct iwl_priv *priv) |
| { |
| int ret = 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; |
| } |
| |
| ret = iwl_send_cmd_sync(priv, &cmd); |
| if (ret) { |
| clear_bit(STATUS_SCAN_ABORTING, &priv->status); |
| return ret; |
| } |
| |
| 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 ret; |
| } |
| |
| /* |
| * CARD_STATE_CMD |
| * |
| * Use: Sets the device's 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 iwl4965_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, |
| }; |
| |
| return iwl_send_cmd(priv, &cmd); |
| } |
| |
| static void iwl4965_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 iwl4965_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 iwl4965_frame *iwl4965_get_free_frame(struct iwl_priv *priv) |
| { |
| struct iwl4965_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 iwl4965_frame, list); |
| } |
| |
| static void iwl4965_free_frame(struct iwl_priv *priv, struct iwl4965_frame *frame) |
| { |
| memset(frame, 0, sizeof(*frame)); |
| list_add(&frame->list, &priv->free_frames); |
| } |
| |
| unsigned int iwl4965_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 u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv) |
| { |
| int i; |
| int rate_mask; |
| |
| /* Set rate mask*/ |
| if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) |
| rate_mask = priv->active_rate_basic & 0xF; |
| else |
| rate_mask = priv->active_rate_basic & 0xFF0; |
| |
| /* Find lowest valid rate */ |
| for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; |
| i = iwl4965_rates[i].next_ieee) { |
| if (rate_mask & (1 << i)) |
| return iwl4965_rates[i].plcp; |
| } |
| |
| /* No valid rate was found. Assign the lowest one */ |
| if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) |
| return IWL_RATE_1M_PLCP; |
| else |
| return IWL_RATE_6M_PLCP; |
| } |
| |
| static int iwl4965_send_beacon_cmd(struct iwl_priv *priv) |
| { |
| struct iwl4965_frame *frame; |
| unsigned int frame_size; |
| int rc; |
| u8 rate; |
| |
| frame = iwl4965_get_free_frame(priv); |
| |
| if (!frame) { |
| IWL_ERROR("Could not obtain free frame buffer for beacon " |
| "command.\n"); |
| return -ENOMEM; |
| } |
| |
| rate = iwl4965_rate_get_lowest_plcp(priv); |
| |
| frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate); |
| |
| rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, |
| &frame->u.cmd[0]); |
| |
| iwl4965_free_frame(priv, frame); |
| |
| return rc; |
| } |
| |
| /****************************************************************************** |
| * |
| * Misc. internal state and helper functions |
| * |
| ******************************************************************************/ |
| |
| /** |
| * iwl4965_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 iwl4965_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] = iwl4965_rates[i].ieee | |
| ((bit & basic_rate) ? 0x80 : 0x00); |
| (*cnt)++; |
| (*left)--; |
| if ((*left <= 0) || |
| (*cnt >= IWL_SUPPORTED_RATES_IE_LEN)) |
| break; |
| } |
| } |
| |
| return ret_rates; |
| } |
| |
| #ifdef CONFIG_IWL4965_HT |
| static void iwl4965_ht_conf(struct iwl_priv *priv, |
| struct ieee80211_bss_conf *bss_conf) |
| { |
| struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf; |
| struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf; |
| struct iwl_ht_info *iwl_conf = &priv->current_ht_config; |
| |
| IWL_DEBUG_MAC80211("enter: \n"); |
| |
| iwl_conf->is_ht = bss_conf->assoc_ht; |
| |
| if (!iwl_conf->is_ht) |
| return; |
| |
| priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2); |
| |
| if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20) |
| iwl_conf->sgf |= 0x1; |
| if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40) |
| iwl_conf->sgf |= 0x2; |
| |
| iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD); |
| iwl_conf->max_amsdu_size = |
| !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU); |
| |
| iwl_conf->supported_chan_width = |
| !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH); |
| iwl_conf->extension_chan_offset = |
| ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET; |
| /* If no above or below channel supplied disable FAT channel */ |
| if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE && |
| iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW) |
| iwl_conf->supported_chan_width = 0; |
| |
| iwl_conf->tx_mimo_ps_mode = |
| (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2); |
| memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16); |
| |
| iwl_conf->control_channel = ht_bss_conf->primary_channel; |
| iwl_conf->tx_chan_width = |
| !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH); |
| iwl_conf->ht_protection = |
| ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION; |
| iwl_conf->non_GF_STA_present = |
| !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT); |
| |
| IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel); |
| IWL_DEBUG_MAC80211("leave\n"); |
| } |
| |
| static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband, |
| u8 *pos, int *left) |
| { |
| struct ieee80211_ht_cap *ht_cap; |
| |
| if (!sband || !sband->ht_info.ht_supported) |
| return; |
| |
| if (*left < sizeof(struct ieee80211_ht_cap)) |
| return; |
| |
| *pos++ = sizeof(struct ieee80211_ht_cap); |
| ht_cap = (struct ieee80211_ht_cap *) pos; |
| |
| ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap); |
| memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16); |
| ht_cap->ampdu_params_info = |
| (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) | |
| ((sband->ht_info.ampdu_density << 2) & |
| IEEE80211_HT_CAP_AMPDU_DENSITY); |
| *left -= sizeof(struct ieee80211_ht_cap); |
| } |
| #else |
| static inline void iwl4965_ht_conf(struct iwl_priv *priv, |
| struct ieee80211_bss_conf *bss_conf) |
| { |
| } |
| static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband, |
| u8 *pos, int *left) |
| { |
| } |
| #endif |
| |
| |
| /** |
| * iwl4965_fill_probe_req - fill in all required fields and IE for probe request |
| */ |
| static u16 iwl4965_fill_probe_req(struct iwl_priv *priv, |
| enum ieee80211_band band, |
| struct ieee80211_mgmt *frame, |
| int left, int is_direct) |
| { |
| int len = 0; |
| u8 *pos = NULL; |
| u16 active_rates, ret_rates, cck_rates, active_rate_basic; |
| const struct ieee80211_supported_band *sband = |
| iwl_get_hw_mode(priv, band); |
| |
| /* 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, iwl4965_broadcast_addr, ETH_ALEN); |
| memcpy(frame->sa, priv->mac_addr, ETH_ALEN); |
| memcpy(frame->bssid, iwl4965_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; |
| |
| /* exclude 60M rate */ |
| active_rates = priv->rates_mask; |
| active_rates &= ~IWL_RATE_60M_MASK; |
| |
| active_rate_basic = active_rates & IWL_BASIC_RATES_MASK; |
| |
| cck_rates = IWL_CCK_RATES_MASK & active_rates; |
| ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates, |
| active_rate_basic, &left); |
| active_rates &= ~ret_rates; |
| |
| ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates, |
| 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; |
| iwl4965_supported_rate_to_ie(pos, active_rates, |
| active_rate_basic, &left); |
| if (*pos > 0) |
| len += 2 + *pos; |
| |
| fill_end: |
| /* fill in HT IE */ |
| left -= 2; |
| if (left < 0) |
| return 0; |
| |
| *pos++ = WLAN_EID_HT_CAPABILITY; |
| *pos = 0; |
| |
| iwl_ht_cap_to_ie(sband, pos, &left); |
| |
| if (*pos > 0) |
| len += 2 + *pos; |
| return (u16)len; |
| } |
| |
| /* |
| * QoS support |
| */ |
| static int iwl4965_send_qos_params_command(struct iwl_priv *priv, |
| struct iwl4965_qosparam_cmd *qos) |
| { |
| |
| return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM, |
| sizeof(struct iwl4965_qosparam_cmd), qos); |
| } |
| |
| static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force) |
| { |
| unsigned long flags; |
| |
| 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; |
| |
| #ifdef CONFIG_IWL4965_HT |
| if (priv->current_ht_config.is_ht) |
| priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (force || iwl_is_associated(priv)) { |
| IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
| priv->qos_data.qos_active, |
| priv->qos_data.def_qos_parm.qos_flags); |
| |
| iwl4965_send_qos_params_command(priv, |
| &(priv->qos_data.def_qos_parm)); |
| } |
| } |
| |
| int iwl4965_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); |
| default: |
| break; |
| } |
| |
| return 1; |
| } |
| |
| #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x |
| |
| static const char *iwl4965_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"; |
| } |
| |
| /** |
| * iwl4965_scan_cancel - Cancel any currently executing HW scan |
| * |
| * NOTE: priv->mutex is not required before calling this function |
| */ |
| static int iwl4965_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; |
| } |
| |
| /** |
| * iwl4965_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 iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) |
| { |
| unsigned long now = jiffies; |
| int ret; |
| |
| ret = iwl4965_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 iwl4965_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; |
| |
| iwl4965_scan_cancel(priv); |
| } |
| |
| #define MAX_UCODE_BEACON_INTERVAL 4096 |
| #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA) |
| |
| static __le16 iwl4965_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 iwl4965_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->timestamp >> 32); |
| priv->rxon_timing.timestamp.dw[0] = |
| cpu_to_le32(priv->timestamp & 0xFFFFFFFF); |
| |
| priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL; |
| |
| tsf = priv->timestamp; |
| |
| 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 = |
| iwl4965_adjust_beacon_interval( |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| } |
| |
| priv->rxon_timing.atim_window = 0; |
| } else { |
| priv->rxon_timing.beacon_interval = |
| iwl4965_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 iwl4965_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 void iwl4965_set_flags_for_phymode(struct iwl_priv *priv, |
| enum ieee80211_band band) |
| { |
| if (band == IEEE80211_BAND_5GHZ) { |
| 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 iwl4965_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; |
| } |
| } |
| |
| /* |
| * initialize rxon structure with default values from eeprom |
| */ |
| static void iwl4965_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; |
| default: |
| IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode); |
| 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->band, |
| 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); |
| priv->band = ch_info->band; |
| |
| iwl4965_set_flags_for_phymode(priv, priv->band); |
| |
| 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; |
| |
| priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK | |
| RXON_FLG_CHANNEL_MODE_PURE_40_MSK); |
| memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
| memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN); |
| priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff; |
| priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff; |
| iwl_set_rxon_chain(priv); |
| } |
| |
| static int iwl4965_set_mode(struct iwl_priv *priv, int mode) |
| { |
| if (mode == IEEE80211_IF_TYPE_IBSS) { |
| const struct iwl_channel_info *ch_info; |
| |
| ch_info = iwl_get_channel_info(priv, |
| priv->band, |
| 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; |
| } |
| } |
| |
| priv->iw_mode = mode; |
| |
| iwl4965_connection_init_rx_config(priv); |
| memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
| |
| iwlcore_clear_stations_table(priv); |
| |
| /* dont commit rxon if rf-kill is on*/ |
| if (!iwl_is_ready_rf(priv)) |
| return -EAGAIN; |
| |
| cancel_delayed_work(&priv->scan_check); |
| if (iwl4965_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; |
| } |
| |
| iwl4965_commit_rxon(priv); |
| |
| return 0; |
| } |
| |
| static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv, |
| struct ieee80211_tx_control *ctl, |
| struct iwl_cmd *cmd, |
| struct sk_buff *skb_frag, |
| int sta_id) |
| { |
| struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; |
| struct iwl_wep_key *wepkey; |
| int keyidx = 0; |
| |
| BUG_ON(ctl->hw_key->hw_key_idx > 3); |
| |
| switch (keyinfo->alg) { |
| case ALG_CCMP: |
| cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM; |
| memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen); |
| if (ctl->flags & IEEE80211_TXCTL_AMPDU) |
| cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; |
| IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); |
| break; |
| |
| case ALG_TKIP: |
| cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP; |
| ieee80211_get_tkip_key(keyinfo->conf, skb_frag, |
| IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key); |
| IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n"); |
| break; |
| |
| case ALG_WEP: |
| wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx]; |
| cmd->cmd.tx.sec_ctl = 0; |
| if (priv->default_wep_key) { |
| /* the WEP key was sent as static */ |
| keyidx = ctl->hw_key->hw_key_idx; |
| memcpy(&cmd->cmd.tx.key[3], wepkey->key, |
| wepkey->key_size); |
| if (wepkey->key_size == WEP_KEY_LEN_128) |
| cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; |
| } else { |
| /* the WEP key was sent as dynamic */ |
| keyidx = keyinfo->keyidx; |
| memcpy(&cmd->cmd.tx.key[3], keyinfo->key, |
| keyinfo->keylen); |
| if (keyinfo->keylen == WEP_KEY_LEN_128) |
| cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; |
| } |
| |
| cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP | |
| (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); |
| |
| IWL_DEBUG_TX("Configuring packet for WEP encryption " |
| "with key %d\n", keyidx); |
| break; |
| |
| default: |
| printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); |
| break; |
| } |
| } |
| |
| /* |
| * handle build REPLY_TX command notification. |
| */ |
| static void iwl4965_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; |
| } |
| |
| if (ieee80211_is_back_request(fc)) |
| tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
| |
| |
| 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 void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len) |
| { |
| /* 0 - mgmt, 1 - cnt, 2 - data */ |
| int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2; |
| priv->tx_stats[idx].cnt++; |
| priv->tx_stats[idx].bytes += len; |
| } |
| /** |
| * iwl4965_get_sta_id - Find station's index within station table |
| * |
| * If new IBSS station, create new entry in station table |
| */ |
| static int iwl4965_get_sta_id(struct iwl_priv *priv, |
| struct ieee80211_hdr *hdr) |
| { |
| int sta_id; |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| DECLARE_MAC_BUF(mac); |
| |
| /* If this frame is broadcast or management, use broadcast station id */ |
| if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || |
| is_multicast_ether_addr(hdr->addr1)) |
| return priv->hw_params.bcast_sta_id; |
| |
| switch (priv->iw_mode) { |
| |
| /* If we are a client station in a BSS network, use the special |
| * AP station entry (that's the only station we communicate with) */ |
| 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_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| return priv->hw_params.bcast_sta_id; |
| |
| /* If this frame is going out to an IBSS network, find the station, |
| * or create a new station table entry */ |
| case IEEE80211_IF_TYPE_IBSS: |
| sta_id = iwl_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| |
| /* Create new station table entry */ |
| sta_id = iwl4965_add_station_flags(priv, hdr->addr1, |
| 0, CMD_ASYNC, NULL); |
| |
| 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(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
| return priv->hw_params.bcast_sta_id; |
| |
| default: |
| IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode); |
| return priv->hw_params.bcast_sta_id; |
| } |
| } |
| |
| /* |
| * start REPLY_TX command process |
| */ |
| static int iwl4965_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 iwl4965_queue *q = NULL; |
| dma_addr_t phys_addr; |
| dma_addr_t txcmd_phys; |
| dma_addr_t scratch_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->vif) { |
| IWL_DEBUG_DROP("Dropping - !priv->vif\n"); |
| goto drop_unlock; |
| } |
| |
| if ((ctl->tx_rate->hw_value & 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 |
| |
| /* drop all data frame if we are not associated */ |
| if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && |
| (!iwl_is_associated(priv) || |
| ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) || |
| !priv->assoc_station_added)) { |
| IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); |
| goto drop_unlock; |
| } |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| hdr_len = ieee80211_get_hdrlen(fc); |
| |
| /* Find (or create) index into station table for destination station */ |
| sta_id = iwl4965_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_TX("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; |
| #ifdef CONFIG_IWL4965_HT |
| /* aggregation is on for this <sta,tid> */ |
| if (ctl->flags & IEEE80211_TXCTL_AMPDU) |
| txq_id = priv->stations[sta_id].tid[tid].agg.txq_id; |
| priv->stations[sta_id].tid[tid].tfds_in_queue++; |
| #endif /* CONFIG_IWL4965_HT */ |
| } |
| |
| /* Descriptor for chosen Tx queue */ |
| txq = &priv->txq[txq_id]; |
| q = &txq->q; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* Set up first empty TFD within this queue's circular TFD buffer */ |
| tfd = &txq->bd[q->write_ptr]; |
| memset(tfd, 0, sizeof(*tfd)); |
| control_flags = (u32 *) tfd; |
| idx = get_cmd_index(q, q->write_ptr, 0); |
| |
| /* Set up driver data for this TFD */ |
| memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info)); |
| txq->txb[q->write_ptr].skb[0] = skb; |
| memcpy(&(txq->txb[q->write_ptr].status.control), |
| ctl, sizeof(struct ieee80211_tx_control)); |
| |
| /* Set up first empty entry in queue's array of Tx/cmd buffers */ |
| 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)); |
| |
| /* |
| * Set up the Tx-command (not MAC!) header. |
| * Store the chosen Tx queue and TFD index within the sequence field; |
| * after Tx, uCode's Tx response will return this value so driver can |
| * locate the frame within the tx queue and do post-tx processing. |
| */ |
| out_cmd->hdr.cmd = REPLY_TX; |
| out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | |
| INDEX_TO_SEQ(q->write_ptr))); |
| |
| /* Copy MAC header from skb into command buffer */ |
| memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len); |
| |
| /* |
| * Use the first empty entry in this queue's command buffer array |
| * to contain the Tx command and MAC header concatenated together |
| * (payload data will be in another buffer). |
| * Size of this varies, due to varying MAC header length. |
| * If end is not dword aligned, we'll have 2 extra bytes at the end |
| * of the MAC header (device reads on dword boundaries). |
| * We'll tell device about this padding later. |
| */ |
| len = priv->hw_params.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; |
| |
| /* Physical address of this Tx command's header (not MAC header!), |
| * within command buffer array. */ |
| txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + |
| offsetof(struct iwl_cmd, hdr); |
| |
| /* Add buffer containing Tx command and MAC(!) header to TFD's |
| * first entry */ |
| iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); |
| |
| if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) |
| iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id); |
| |
| /* Set up TFD's 2nd entry to point directly to remainder of skb, |
| * if any (802.11 null frames 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); |
| iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); |
| } |
| |
| /* Tell 4965 about any 2-byte padding after MAC header */ |
| if (len_org) |
| out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK; |
| |
| /* Total # bytes to be transmitted */ |
| len = (u16)skb->len; |
| out_cmd->cmd.tx.len = cpu_to_le16(len); |
| |
| /* TODO need this for burst mode later on */ |
| iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id); |
| |
| /* set is_hcca to 0; it probably will never be implemented */ |
| iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0); |
| |
| iwl_update_tx_stats(priv, fc, len); |
| |
| scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + |
| offsetof(struct iwl4965_tx_cmd, scratch); |
| out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys); |
| out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys); |
| |
| 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(priv, IWL_DL_TX, out_cmd->cmd.payload, |
| sizeof(out_cmd->cmd.tx)); |
| |
| iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr, |
| ieee80211_get_hdrlen(fc)); |
| |
| /* Set up entry for this TFD in Tx byte-count array */ |
| priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len); |
| |
| /* Tell device the write index *just past* this latest filled TFD */ |
| q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
| rc = iwl4965_tx_queue_update_write_ptr(priv, txq); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (rc) |
| return rc; |
| |
| if ((iwl4965_queue_space(q) < q->high_mark) |
| && priv->mac80211_registered) { |
| if (wait_write_ptr) { |
| spin_lock_irqsave(&priv->lock, flags); |
| txq->need_update = 1; |
| iwl4965_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 iwl4965_set_rate(struct iwl_priv *priv) |
| { |
| const struct ieee80211_supported_band *hw = NULL; |
| struct ieee80211_rate *rate; |
| int i; |
| |
| hw = iwl_get_hw_mode(priv, priv->band); |
| if (!hw) { |
| IWL_ERROR("Failed to set rate: unable to get hw mode\n"); |
| return; |
| } |
| |
| priv->active_rate = 0; |
| priv->active_rate_basic = 0; |
| |
| for (i = 0; i < hw->n_bitrates; i++) { |
| rate = &(hw->bitrates[i]); |
| if (rate->hw_value < IWL_RATE_COUNT) |
| priv->active_rate |= (1 << rate->hw_value); |
| } |
| |
| 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; |
| } |
| |
| void iwl4965_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) { |
| iwl4965_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); |
| /* call the host command only if no hw rf-kill set */ |
| if (!test_bit(STATUS_RF_KILL_HW, &priv->status) && |
| iwl_is_ready(priv)) |
| iwl4965_send_card_state(priv, |
| CARD_STATE_CMD_DISABLE, |
| 0); |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| |
| /* make sure mac80211 stop sending Tx frame */ |
| if (priv->mac80211_registered) |
| ieee80211_stop_queues(priv->hw); |
| } |
| 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_nic_access(priv)) |
| iwl_release_nic_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; |
| } |
| |
| #define IWL_PACKET_RETRY_TIME HZ |
| |
| int iwl4965_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 iwl4965_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 iwl4965_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_IWL4965_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 iwl4965_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 iwl4965_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 iwl4965_get_measurement(struct iwl_priv *priv, |
| struct ieee80211_measurement_params *params, |
| u8 type) |
| { |
| struct iwl4965_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 = |
| iwl4965_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 = |
| iwl4965_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 iwl4965_txstatus_to_ieee(struct iwl_priv *priv, |
| struct iwl4965_tx_info *tx_sta) |
| { |
| |
| tx_sta->status.ack_signal = 0; |
| tx_sta->status.excessive_retries = 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; |
| } |
| |
| /** |
| * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd |
| * |
| * 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 the stack that feeds us. |
| */ |
| int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) |
| { |
| struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| struct iwl4965_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->write_ptr, q->read_ptr); |
| return 0; |
| } |
| |
| for (index = iwl_queue_inc_wrap(index, q->n_bd); |
| q->read_ptr != index; |
| q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) { |
| if (txq_id != IWL_CMD_QUEUE_NUM) { |
| iwl4965_txstatus_to_ieee(priv, |
| &(txq->txb[txq->q.read_ptr])); |
| iwl_hw_txq_free_tfd(priv, txq); |
| } else if (nfreed > 1) { |
| IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index, |
| q->write_ptr, q->read_ptr); |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| nfreed++; |
| } |
| |
| return nfreed; |
| } |
| |
| static int iwl4965_is_tx_success(u32 status) |
| { |
| status &= TX_STATUS_MSK; |
| return (status == TX_STATUS_SUCCESS) |
| || (status == TX_STATUS_DIRECT_DONE); |
| } |
| |
| /****************************************************************************** |
| * |
| * Generic RX handler implementations |
| * |
| ******************************************************************************/ |
| #ifdef CONFIG_IWL4965_HT |
| |
| static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv, |
| struct ieee80211_hdr *hdr) |
| { |
| if (priv->iw_mode == IEEE80211_IF_TYPE_STA) |
| return IWL_AP_ID; |
| else { |
| u8 *da = ieee80211_get_DA(hdr); |
| return iwl_find_station(priv, da); |
| } |
| } |
| |
| static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr( |
| struct iwl_priv *priv, int txq_id, int idx) |
| { |
| if (priv->txq[txq_id].txb[idx].skb[0]) |
| return (struct ieee80211_hdr *)priv->txq[txq_id]. |
| txb[idx].skb[0]->data; |
| return NULL; |
| } |
| |
| static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp) |
| { |
| __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status + |
| tx_resp->frame_count); |
| return le32_to_cpu(*scd_ssn) & MAX_SN; |
| |
| } |
| |
| /** |
| * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue |
| */ |
| static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv, |
| struct iwl_ht_agg *agg, |
| struct iwl4965_tx_resp_agg *tx_resp, |
| u16 start_idx) |
| { |
| u16 status; |
| struct agg_tx_status *frame_status = &tx_resp->status; |
| struct ieee80211_tx_status *tx_status = NULL; |
| struct ieee80211_hdr *hdr = NULL; |
| int i, sh; |
| int txq_id, idx; |
| u16 seq; |
| |
| if (agg->wait_for_ba) |
| IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n"); |
| |
| agg->frame_count = tx_resp->frame_count; |
| agg->start_idx = start_idx; |
| agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
| agg->bitmap = 0; |
| |
| /* # frames attempted by Tx command */ |
| if (agg->frame_count == 1) { |
| /* Only one frame was attempted; no block-ack will arrive */ |
| status = le16_to_cpu(frame_status[0].status); |
| seq = le16_to_cpu(frame_status[0].sequence); |
| idx = SEQ_TO_INDEX(seq); |
| txq_id = SEQ_TO_QUEUE(seq); |
| |
| /* FIXME: code repetition */ |
| IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n", |
| agg->frame_count, agg->start_idx, idx); |
| |
| tx_status = &(priv->txq[txq_id].txb[idx].status); |
| tx_status->retry_count = tx_resp->failure_frame; |
| tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU; |
| tx_status->flags = iwl4965_is_tx_success(status)? |
| IEEE80211_TX_STATUS_ACK : 0; |
| iwl4965_hwrate_to_tx_control(priv, |
| le32_to_cpu(tx_resp->rate_n_flags), |
| &tx_status->control); |
| /* FIXME: code repetition end */ |
| |
| IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n", |
| status & 0xff, tx_resp->failure_frame); |
| IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n", |
| iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags)); |
| |
| agg->wait_for_ba = 0; |
| } else { |
| /* Two or more frames were attempted; expect block-ack */ |
| u64 bitmap = 0; |
| int start = agg->start_idx; |
| |
| /* Construct bit-map of pending frames within Tx window */ |
| for (i = 0; i < agg->frame_count; i++) { |
| u16 sc; |
| status = le16_to_cpu(frame_status[i].status); |
| seq = le16_to_cpu(frame_status[i].sequence); |
| idx = SEQ_TO_INDEX(seq); |
| txq_id = SEQ_TO_QUEUE(seq); |
| |
| if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
| AGG_TX_STATE_ABORT_MSK)) |
| continue; |
| |
| IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n", |
| agg->frame_count, txq_id, idx); |
| |
| hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx); |
| |
| sc = le16_to_cpu(hdr->seq_ctrl); |
| if (idx != (SEQ_TO_SN(sc) & 0xff)) { |
| IWL_ERROR("BUG_ON idx doesn't match seq control" |
| " idx=%d, seq_idx=%d, seq=%d\n", |
| idx, SEQ_TO_SN(sc), |
| hdr->seq_ctrl); |
| return -1; |
| } |
| |
| IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n", |
| i, idx, SEQ_TO_SN(sc)); |
| |
| sh = idx - start; |
| if (sh > 64) { |
| sh = (start - idx) + 0xff; |
| bitmap = bitmap << sh; |
| sh = 0; |
| start = idx; |
| } else if (sh < -64) |
| sh = 0xff - (start - idx); |
| else if (sh < 0) { |
| sh = start - idx; |
| start = idx; |
| bitmap = bitmap << sh; |
| sh = 0; |
| } |
| bitmap |= (1 << sh); |
| IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n", |
| start, (u32)(bitmap & 0xFFFFFFFF)); |
| } |
| |
| agg->bitmap = bitmap; |
| agg->start_idx = start; |
| agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
| IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n", |
| agg->frame_count, agg->start_idx, |
| (unsigned long long)agg->bitmap); |
| |
| if (bitmap) |
| agg->wait_for_ba = 1; |
| } |
| return 0; |
| } |
| #endif |
| |
| /** |
| * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response |
| */ |
| static void iwl4965_rx_reply_tx(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); |
| struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| struct ieee80211_tx_status *tx_status; |
| struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
| u32 status = le32_to_cpu(tx_resp->status); |
| #ifdef CONFIG_IWL4965_HT |
| int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION; |
| struct ieee80211_hdr *hdr; |
| __le16 *qc; |
| #endif |
| |
| 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.write_ptr, |
| txq->q.read_ptr); |
| return; |
| } |
| |
| #ifdef CONFIG_IWL4965_HT |
| hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index); |
| qc = ieee80211_get_qos_ctrl(hdr); |
| |
| if (qc) |
| tid = le16_to_cpu(*qc) & 0xf; |
| |
| sta_id = iwl4965_get_ra_sta_id(priv, hdr); |
| if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) { |
| IWL_ERROR("Station not known\n"); |
| return; |
| } |
| |
| if (txq->sched_retry) { |
| const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp); |
| struct iwl_ht_agg *agg = NULL; |
| |
| if (!qc) |
| return; |
| |
| agg = &priv->stations[sta_id].tid[tid].agg; |
| |
| iwl4965_tx_status_reply_tx(priv, agg, |
| (struct iwl4965_tx_resp_agg *)tx_resp, index); |
| |
| if ((tx_resp->frame_count == 1) && |
| !iwl4965_is_tx_success(status)) { |
| /* TODO: send BAR */ |
| } |
| |
| if (txq->q.read_ptr != (scd_ssn & 0xff)) { |
| int freed, ampdu_q; |
| index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); |
| IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn " |
| "%d index %d\n", scd_ssn , index); |
| freed = iwl4965_tx_queue_reclaim(priv, txq_id, index); |
| priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; |
| |
| if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && |
| txq_id >= 0 && priv->mac80211_registered && |
| agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) { |
| /* calculate mac80211 ampdu sw queue to wake */ |
| ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID + |
| priv->hw->queues; |
| if (agg->state == IWL_AGG_OFF) |
| ieee80211_wake_queue(priv->hw, txq_id); |
| else |
| ieee80211_wake_queue(priv->hw, ampdu_q); |
| } |
| iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id); |
| } |
| } else { |
| #endif /* CONFIG_IWL4965_HT */ |
| tx_status = &(txq->txb[txq->q.read_ptr].status); |
| |
| tx_status->retry_count = tx_resp->failure_frame; |
| tx_status->flags = |
| iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0; |
| iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), |
| &tx_status->control); |
| |
| IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x " |
| "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status), |
| status, le32_to_cpu(tx_resp->rate_n_flags), |
| tx_resp->failure_frame); |
| |
| IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index); |
| #ifdef CONFIG_IWL4965_HT |
| if (index != -1) { |
| int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index); |
| if (tid != MAX_TID_COUNT) |
| priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; |
| if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && |
| (txq_id >= 0) && priv->mac80211_registered) |
| ieee80211_wake_queue(priv->hw, txq_id); |
| if (tid != MAX_TID_COUNT) |
| iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id); |
| } |
| } |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) |
| IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); |
| } |
| |
| |
| static void iwl4965_rx_reply_alive(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_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 iwl4965_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 iwl4965_alive_resp)); |
| pwork = &priv->alive_start; |
| } |
| |
| /* We delay the ALIVE response by 5ms to |
| * give the HW RF Kill time to activate... */ |
| if (palive->is_valid == UCODE_VALID_OK) |
| queue_delayed_work(priv->workqueue, pwork, |
| msecs_to_jiffies(5)); |
| else |
| IWL_WARNING("uCode did not respond OK.\n"); |
| } |
| |
| static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| |
| IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); |
| return; |
| } |
| |
| static void iwl4965_rx_reply_error(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)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 iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon; |
| struct iwl4965_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 iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif); |
| |
| if (!report->state) { |
| IWL_DEBUG(IWL_DL_11H, |
| "Spectrum Measure Notification: Start\n"); |
| return; |
| } |
| |
| memcpy(&priv->measure_report, report, sizeof(*report)); |
| priv->measurement_status |= MEASUREMENT_READY; |
| #endif |
| } |
| |
| static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_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 iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)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(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len)); |
| } |
| |
| static void iwl4965_bg_beacon_update(struct work_struct *work) |
| { |
| struct iwl_priv *priv = |
| container_of(work, struct iwl_priv, beacon_update); |
| struct sk_buff *beacon; |
| |
| /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ |
| beacon = ieee80211_beacon_get(priv->hw, priv->vif, 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); |
| |
| iwl4965_send_beacon_cmd(priv); |
| } |
| |
| static void iwl4965_rx_beacon_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status); |
| u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); |
| |
| 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 iwl4965_rx_reply_scan(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_scanreq_notification *notif = |
| (struct iwl4965_scanreq_notification *)pkt->u.raw; |
| |
| IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status); |
| #endif |
| } |
| |
| /* Service SCAN_START_NOTIFICATION (0x82) */ |
| static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_scanstart_notification *notif = |
| (struct iwl4965_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 iwl4965_rx_scan_results_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_scanresults_notification *notif = |
| (struct iwl4965_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; |
| priv->next_scan_jiffies = 0; |
| } |
| |
| /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */ |
| static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| struct iwl4965_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; |
| priv->next_scan_jiffies = 0; |
| 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 iwl4965_rx_card_state_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
| unsigned long status = priv->status; |
| |
| IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n", |
| (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
| (flags & SW_CARD_DISABLED) ? "Kill" : "On"); |
| |
| if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | |
| RF_CARD_DISABLED)) { |
| |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_direct32( |
| priv, HBUS_TARG_MBX_C, |
| HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); |
| |
| iwl_release_nic_access(priv); |
| } |
| |
| if (!(flags & RXON_CARD_DISABLED)) { |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_direct32( |
| priv, HBUS_TARG_MBX_C, |
| HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); |
| |
| iwl_release_nic_access(priv); |
| } |
| } |
| |
| if (flags & RF_CARD_DISABLED) { |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); |
| iwl_read32(priv, CSR_UCODE_DRV_GP1); |
| if (!iwl_grab_nic_access(priv)) |
| iwl_release_nic_access(priv); |
| } |
| } |
| |
| if (flags & HW_CARD_DISABLED) |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| else |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| |
| if (flags & SW_CARD_DISABLED) |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| else |
| clear_bit(STATUS_RF_KILL_SW, &priv->status); |
| |
| if (!(flags & RXON_CARD_DISABLED)) |
| iwl4965_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); |
| } |
| |
| /** |
| * iwl4965_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 iwl4965_setup_rx_handlers(struct iwl_priv *priv) |
| { |
| priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive; |
| priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta; |
| priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error; |
| priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa; |
| priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = |
| iwl4965_rx_spectrum_measure_notif; |
| priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif; |
| priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = |
| iwl4965_rx_pm_debug_statistics_notif; |
| priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif; |
| |
| /* |
| * The same handler is used for both the REPLY to a discrete |
| * statistics request from the host as well as for the periodic |
| * statistics notifications (after received beacons) from the uCode. |
| */ |
| priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics; |
| priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics; |
| |
| priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan; |
| priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif; |
| priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] = |
| iwl4965_rx_scan_results_notif; |
| priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] = |
| iwl4965_rx_scan_complete_notif; |
| priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif; |
| priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx; |
| |
| /* Set up hardware specific Rx handlers */ |
| priv->cfg->ops->lib->rx_handler_setup(priv); |
| } |
| |
| /** |
| * iwl4965_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 iwl4965_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; |
| |
| iwl4965_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); |
| } |
| } |
| |
| /* |
| * this should be called while priv->lock is locked |
| */ |
| static void __iwl_rx_replenish(struct iwl_priv *priv) |
| { |
| iwl_rx_allocate(priv); |
| iwl_rx_queue_restock(priv); |
| } |
| |
| |
| /** |
| * iwl_rx_handle - Main entry function for receiving responses from uCode |
| * |
| * Uses the priv->rx_handlers callback function array to invoke |
| * the appropriate handlers, including command responses, |
| * frame-received notifications, and other notifications. |
| */ |
| void iwl_rx_handle(struct iwl_priv *priv) |
| { |
| struct iwl_rx_mem_buffer *rxb; |
| struct iwl_rx_packet *pkt; |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| u32 r, i; |
| int reclaim; |
| unsigned long flags; |
| u8 fill_rx = 0; |
| u32 count = 8; |
| |
| /* uCode's read index (stored in shared DRAM) indicates the last Rx |
| * buffer that the driver may process (last buffer filled by ucode). */ |
| r = priv->cfg->ops->lib->shared_mem_rx_idx(priv); |
| i = rxq->read; |
| |
| /* Rx interrupt, but nothing sent from uCode */ |
| if (i == r) |
| IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i); |
| |
| if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2)) |
| fill_rx = 1; |
| |
| while (i != r) { |
| rxb = rxq->queue[i]; |
| |
| /* If an RXB doesn't have a Rx queue slot associated with it, |
| * then a bug has been introduced in the queue refilling |
| * routines -- catch it here */ |
| BUG_ON(rxb == NULL); |
| |
| rxq->queue[i] = NULL; |
| |
| pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| |
| /* Reclaim a command buffer only if this packet is a response |
| * to a (driver-originated) command. |
| * If the packet (e.g. Rx frame) originated from uCode, |
| * there is no command buffer to reclaim. |
| * Ucode should set SEQ_RX_FRAME bit if ucode-originated, |
| * but apparently a few don't get set; catch them here. */ |
| reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && |
| (pkt->hdr.cmd != REPLY_RX_PHY_CMD) && |
| (pkt->hdr.cmd != REPLY_RX) && |
| (pkt->hdr.cmd != REPLY_COMPRESSED_BA) && |
| (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && |
| (pkt->hdr.cmd != REPLY_TX); |
| |
| /* Based on type of command response or notification, |
| * handle those that need handling via function in |
| * rx_handlers table. See iwl4965_setup_rx_handlers() */ |
| if (priv->rx_handlers[pkt->hdr.cmd]) { |
| IWL_DEBUG(IWL_DL_RX, "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_RX, |
| "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) |
| iwl4965_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, |
| priv->hw_params.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; |
| /* If there are a lot of unused frames, |
| * restock the Rx queue so ucode wont assert. */ |
| if (fill_rx) { |
| count++; |
| if (count >= 8) { |
| priv->rxq.read = i; |
| __iwl_rx_replenish(priv); |
| count = 0; |
| } |
| } |
| } |
| |
| /* Backtrack one entry */ |
| priv->rxq.read = i; |
| iwl_rx_queue_restock(priv); |
| } |
| /* 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 iwl4965_calc_db_from_ratio(int sig_ratio) |
| { |
| /* 1000:1 or higher just report as 60 dB */ |
| if (sig_ratio >= 1000) |
| return 60; |
| |
| /* 100:1 or higher, 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 iwl4965_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; |
| } |
| |
| /** |
| * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware |
| */ |
| static int iwl4965_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_nic_access(priv); |
| if (rc) |
| return rc; |
| iwl_write_direct32(priv, HBUS_TARG_WRPTR, |
| txq->q.write_ptr | (txq_id << 8)); |
| iwl_release_nic_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.write_ptr | (txq_id << 8)); |
| |
| txq->need_update = 0; |
| |
| return rc; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv) |
| { |
| struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon; |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_RADIO("RX CONFIG:\n"); |
| iwl_print_hex_dump(priv, 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 iwl4965_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); |
| } |
| |
| /* call this function to flush any scheduled tasklet */ |
| static inline void iwl_synchronize_irq(struct iwl_priv *priv) |
| { |
| /* wait to make sure we flush pedding tasklet*/ |
| synchronize_irq(priv->pci_dev->irq); |
| tasklet_kill(&priv->irq_tasklet); |
| } |
| |
| static inline void iwl4965_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 iwl4965_dump_nic_error_log(struct iwl_priv *priv) |
| { |
| u32 data2, line; |
| 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 (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { |
| IWL_ERROR("Not valid error log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| rc = iwl_grab_nic_access(priv); |
| if (rc) { |
| IWL_WARNING("Can not read from adapter at this time.\n"); |
| return; |
| } |
| |
| count = iwl_read_targ_mem(priv, base); |
| |
| if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { |
| IWL_ERROR("Start IWL Error Log Dump:\n"); |
| IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count); |
| } |
| |
| desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32)); |
| blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32)); |
| blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32)); |
| ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32)); |
| ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32)); |
| data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32)); |
| data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32)); |
| line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32)); |
| time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32)); |
| |
| IWL_ERROR("Desc Time " |
| "data1 data2 line\n"); |
| IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n", |
| desc_lookup(desc), desc, time, data1, data2, line); |
| IWL_ERROR("blink1 blink2 ilink1 ilink2\n"); |
| IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2, |
| ilink1, ilink2); |
| |
| iwl_release_nic_access(priv); |
| } |
| |
| #define EVENT_START_OFFSET (4 * sizeof(u32)) |
| |
| /** |
| * iwl4965_print_event_log - Dump error event log to syslog |
| * |
| * NOTE: Must be called with iwl_grab_nic_access() already obtained! |
| */ |
| static void iwl4965_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_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| time = iwl_read_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| if (mode == 0) |
| IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */ |
| else { |
| data = iwl_read_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev); |
| } |
| } |
| } |
| |
| static void iwl4965_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 (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) { |
| IWL_ERROR("Invalid event log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| rc = iwl_grab_nic_access(priv); |
| if (rc) { |
| IWL_WARNING("Can not read from adapter at this time.\n"); |
| return; |
| } |
| |
| /* event log header */ |
| capacity = iwl_read_targ_mem(priv, base); |
| mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); |
| num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); |
| next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); |
| |
| 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_nic_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) |
| iwl4965_print_event_log(priv, next_entry, |
| capacity - next_entry, mode); |
| |
| /* (then/else) start at top of log */ |
| iwl4965_print_event_log(priv, 0, next_entry, mode); |
| |
| iwl_release_nic_access(priv); |
| } |
| |
| /** |
| * iwl4965_irq_handle_error - called for HW or SW error interrupt from card |
| */ |
| static void iwl4965_irq_handle_error(struct iwl_priv *priv) |
| { |
| /* Set the FW error flag -- cleared on iwl4965_down */ |
| set_bit(STATUS_FW_ERROR, &priv->status); |
| |
| /* Cancel currently queued command. */ |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (priv->debug_level & IWL_DL_FW_ERRORS) { |
| iwl4965_dump_nic_error_log(priv); |
| iwl4965_dump_nic_event_log(priv); |
| iwl4965_print_rx_config_cmd(priv); |
| } |
| #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_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; |
| } |
| if (priv->cfg->mod_params->restart_fw) |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| } |
| |
| static void iwl4965_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; |
| iwl4965_commit_rxon(priv); |
| |
| iwl4965_rxon_add_station(priv, priv->bssid, 1); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id); |
| priv->error_recovering = 0; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static void iwl4965_irq_tasklet(struct iwl_priv *priv) |
| { |
| u32 inta, handled = 0; |
| u32 inta_fh; |
| unsigned long flags; |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| u32 inta_mask; |
| #endif |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* Ack/clear/reset pending uCode interrupts. |
| * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, |
| * and will clear only when CSR_FH_INT_STATUS gets cleared. */ |
| inta = iwl_read32(priv, CSR_INT); |
| iwl_write32(priv, CSR_INT, inta); |
| |
| /* Ack/clear/reset pending flow-handler (DMA) interrupts. |
| * Any new interrupts that happen after this, either while we're |
| * in this tasklet, or later, will show up in next ISR/tasklet. */ |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (priv->debug_level & IWL_DL_ISR) { |
| /* just for debug */ |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); |
| IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
| inta, inta_mask, inta_fh); |
| } |
| #endif |
| |
| /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not |
| * atomic, make sure that inta covers all the interrupts that |
| * we've discovered, even if FH interrupt came in just after |
| * reading CSR_INT. */ |
| if (inta_fh & CSR49_FH_INT_RX_MASK) |
| inta |= CSR_INT_BIT_FH_RX; |
| if (inta_fh & CSR49_FH_INT_TX_MASK) |
| inta |= CSR_INT_BIT_FH_TX; |
| |
| /* Now service all interrupt bits discovered above. */ |
| if (inta & CSR_INT_BIT_HW_ERR) { |
| IWL_ERROR("Microcode HW error detected. Restarting.\n"); |
| |
| /* Tell the device to stop sending interrupts */ |
| iwl4965_disable_interrupts(priv); |
| |
| iwl4965_irq_handle_error(priv); |
| |
| handled |= CSR_INT_BIT_HW_ERR; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (priv->debug_level & (IWL_DL_ISR)) { |
| /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
| if (inta & CSR_INT_BIT_SCD) |
| IWL_DEBUG_ISR("Scheduler finished to transmit " |
| "the frame/frames.\n"); |
| |
| /* Alive notification via Rx interrupt will do the real work */ |
| if (inta & CSR_INT_BIT_ALIVE) |
| IWL_DEBUG_ISR("Alive interrupt\n"); |
| } |
| #endif |
| /* Safely ignore these bits for debug checks below */ |
| inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); |
| |
| /* HW RF KILL switch toggled */ |
| if (inta & CSR_INT_BIT_RF_KILL) { |
| int hw_rf_kill = 0; |
| if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
| CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
| hw_rf_kill = 1; |
| |
| IWL_DEBUG(IWL_DL_RF_KILL, "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 |
| * iwl4965_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 */ |
| 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); |
| iwl4965_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); |
| iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]); |
| iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]); |
| iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]); |
| iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]); |
| iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]); |
| iwl4965_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"); |
| 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 */ |
| /* only Re-enable if diabled by irq */ |
| if (test_bit(STATUS_INT_ENABLED, &priv->status)) |
| iwl4965_enable_interrupts(priv); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (priv->debug_level & (IWL_DL_ISR)) { |
| inta = iwl_read32(priv, CSR_INT); |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| IWL_DEBUG_ISR("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 iwl4965_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. It might have already raised |
| * an interrupt */ |
| 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); |
| |
| inta &= ~CSR_INT_BIT_SCD; |
| |
| /* iwl4965_irq_tasklet() will service interrupts and re-enable them */ |
| if (likely(inta || inta_fh)) |
| 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. */ |
| /* only Re-enable if diabled by irq */ |
| if (test_bit(STATUS_INT_ENABLED, &priv->status)) |
| iwl4965_enable_interrupts(priv); |
| spin_unlock(&priv->lock); |
| return IRQ_NONE; |
| } |
| |
| /* 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 iwl4965_get_active_dwell_time(struct iwl_priv *priv, |
| enum ieee80211_band band) |
| { |
| if (band == IEEE80211_BAND_5GHZ) |
| return IWL_ACTIVE_DWELL_TIME_52; |
| else |
| return IWL_ACTIVE_DWELL_TIME_24; |
| } |
| |
| static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv, |
| enum ieee80211_band band) |
| { |
| u16 active = iwl4965_get_active_dwell_time(priv, band); |
| u16 passive = (band != IEEE80211_BAND_5GHZ) ? |
| 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 iwl4965_get_channels_for_scan(struct iwl_priv *priv, |
| enum ieee80211_band band, |
| u8 is_active, u8 direct_mask, |
| struct iwl4965_scan_channel *scan_ch) |
| { |
| const struct ieee80211_channel *channels = NULL; |
| const struct ieee80211_supported_band *sband; |
| const struct iwl_channel_info *ch_info; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added, i; |
| |
| sband = iwl_get_hw_mode(priv, band); |
| if (!sband) |
| return 0; |
| |
| channels = sband->channels; |
| |
| active_dwell = iwl4965_get_active_dwell_time(priv, band); |
| passive_dwell = iwl4965_get_passive_dwell_time(priv, band); |
| |
| for (i = 0, added = 0; i < sband->n_channels; i++) { |
| if (channels[i].flags & IEEE80211_CHAN_DISABLED) |
| continue; |
| |
| scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq); |
| |
| ch_info = iwl_get_channel_info(priv, band, |
| 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].flags & IEEE80211_CHAN_PASSIVE_SCAN)) |
| scan_ch->type = 0; /* passive */ |
| else |
| scan_ch->type = 1; /* active */ |
| |
| if (scan_ch->type & 1) |
| scan_ch->type |= (direct_mask << 1); |
| |
| scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| |
| /* Set txpower levels to defaults */ |
| scan_ch->tpc.dsp_atten = 110; |
| /* scan_pwr_info->tpc.dsp_atten; */ |
| |
| /*scan_pwr_info->tpc.tx_gain; */ |
| if (band == IEEE80211_BAND_5GHZ) |
| 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; |
| } |
| |
| /****************************************************************************** |
| * |
| * uCode download functions |
| * |
| ******************************************************************************/ |
| |
| static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv) |
| { |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot); |
| } |
| |
| static void iwl4965_nic_start(struct iwl_priv *priv) |
| { |
| /* Remove all resets to allow NIC to operate */ |
| iwl_write32(priv, CSR_RESET, 0); |
| } |
| |
| |
| /** |
| * iwl4965_read_ucode - Read uCode images from disk file. |
| * |
| * Copy into buffers for card to fetch via bus-mastering |
| */ |
| static int iwl4965_read_ucode(struct iwl_priv *priv) |
| { |
| struct iwl4965_ucode *ucode; |
| int ret; |
| const struct firmware *ucode_raw; |
| const char *name = priv->cfg->fw_name; |
| 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. */ |
| ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev); |
| if (ret < 0) { |
| IWL_ERROR("%s firmware file req failed: Reason %d\n", |
| name, ret); |
| 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"); |
| ret = -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); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Verify that uCode images will fit in card's SRAM */ |
| if (inst_size > priv->hw_params.max_inst_size) { |
| IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n", |
| inst_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| if (data_size > priv->hw_params.max_data_size) { |
| IWL_DEBUG_INFO("uCode data len %d too large to fit in\n", |
| data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_size > priv->hw_params.max_inst_size) { |
| IWL_DEBUG_INFO |
| ("uCode init instr len %d too large to fit in\n", |
| init_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_data_size > priv->hw_params.max_data_size) { |
| IWL_DEBUG_INFO |
| ("uCode init data len %d too large to fit in\n", |
| init_data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (boot_size > priv->hw_params.max_bsm_size) { |
| IWL_DEBUG_INFO |
| ("uCode boot instr len %d too large to fit in\n", |
| boot_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Allocate ucode buffers for card's bus-master loading ... */ |
| |
| /* Runtime instructions and 2 copies of data: |
| * 1) unmodified from disk |
| * 2) backup cache for save/restore during power-downs */ |
| priv->ucode_code.len = inst_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code); |
| |
| priv->ucode_data.len = data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data); |
| |
| priv->ucode_data_backup.len = data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup); |
| |
| /* Initialization instructions and data */ |
| if (init_size && init_data_size) { |
| priv->ucode_init.len = init_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init); |
| |
| priv->ucode_init_data.len = init_data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data); |
| |
| if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr) |
| goto err_pci_alloc; |
| } |
| |
| /* Bootstrap (instructions only, no data) */ |
| if (boot_size) { |
| priv->ucode_boot.len = boot_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot); |
| |
| if (!priv->ucode_boot.v_addr) |
| goto err_pci_alloc; |
| } |
| |
| /* Copy images into buffers for card's bus-master reads ... */ |
| |
| /* Runtime instructions (first block of data in file) */ |
| src = &ucode->data[0]; |
| len = priv->ucode_code.len; |
| IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", 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 iwl4965_up() */ |
| src = &ucode->data[inst_size]; |
| len = priv->ucode_data.len; |
| IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len); |
| memcpy(priv->ucode_data.v_addr, src, len); |
| memcpy(priv->ucode_data_backup.v_addr, src, len); |
| |
| /* Initialization instructions (3rd block) */ |
| if (init_size) { |
| src = &ucode->data[inst_size + data_size]; |
| len = priv->ucode_init.len; |
| IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n", |
| len); |
| memcpy(priv->ucode_init.v_addr, src, len); |
| } |
| |
| /* Initialization data (4th block) */ |
| if (init_data_size) { |
| src = &ucode->data[inst_size + data_size + init_size]; |
| len = priv->ucode_init_data.len; |
| IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n", |
| len); |
| memcpy(priv->ucode_init_data.v_addr, src, len); |
| } |
| |
| /* Bootstrap instructions (5th block) */ |
| src = &ucode->data[inst_size + data_size + init_size + init_data_size]; |
| len = priv->ucode_boot.len; |
| IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len); |
| memcpy(priv->ucode_boot.v_addr, src, len); |
| |
| /* We have our copies now, allow OS release its copies */ |
| release_firmware(ucode_raw); |
| return 0; |
| |
| err_pci_alloc: |
| IWL_ERROR("failed to allocate pci memory\n"); |
| ret = -ENOMEM; |
| iwl4965_dealloc_ucode_pci(priv); |
| |
| err_release: |
| release_firmware(ucode_raw); |
| |
| error: |
| return ret; |
| } |
| |
| /** |
| * iwl4965_alive_start - called after REPLY_ALIVE notification received |
| * from protocol/runtime uCode (initialization uCode's |
| * Alive gets handled by iwl4965_init_alive_start()). |
| */ |
| static void iwl4965_alive_start(struct iwl_priv *priv) |
| { |
| int ret = 0; |
| |
| 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; |
| } |
| |
| iwlcore_clear_stations_table(priv); |
| |
| ret = priv->cfg->ops->lib->alive_notify(priv); |
| if (ret) { |
| IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n", |
| ret); |
| goto restart; |
| } |
| |
| /* After the ALIVE response, we can send host commands to 4965 uCode */ |
| set_bit(STATUS_ALIVE, &priv->status); |
| |
| /* Clear out the uCode error bit if it is set */ |
| clear_bit(STATUS_FW_ERROR, &priv->status); |
| |
| if (iwl_is_rfkill(priv)) |
| return; |
| |
| ieee80211_start_queues(priv->hw); |
| |
| priv->active_rate = priv->rates_mask; |
| priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; |
| |
| if (iwl_is_associated(priv)) { |
| struct iwl4965_rxon_cmd *active_rxon = |
| (struct iwl4965_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 */ |
| iwl4965_connection_init_rx_config(priv); |
| memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); |
| } |
| |
| /* Configure Bluetooth device coexistence support */ |
| iwl4965_send_bt_config(priv); |
| |
| /* Configure the adapter for unassociated operation */ |
| iwl4965_commit_rxon(priv); |
| |
| /* At this point, the NIC is initialized and operational */ |
| priv->notif_missed_beacons = 0; |
| |
| iwl4965_rf_kill_ct_config(priv); |
| |
| iwl_leds_register(priv); |
| |
| IWL_DEBUG_INFO("ALIVE processing complete.\n"); |
| set_bit(STATUS_READY, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| if (priv->error_recovering) |
| iwl4965_error_recovery(priv); |
| |
| iwlcore_low_level_notify(priv, IWLCORE_START_EVT); |
| ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC); |
| return; |
| |
| restart: |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| |
| static void iwl4965_cancel_deferred_work(struct iwl_priv *priv); |
| |
| static void __iwl4965_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_leds_unregister(priv); |
| |
| iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT); |
| |
| iwlcore_clear_stations_table(priv); |
| |
| /* Unblock any waiting calls */ |
| wake_up_interruptible_all(&priv->wait_command_queue); |
| |
| /* Wipe out the EXIT_PENDING status bit if we are not actually |
| * exiting the module */ |
| if (!exit_pending) |
| clear_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| /* stop and reset the on-board processor */ |
| iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
| |
| /* tell the device to stop sending interrupts */ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl4965_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| iwl_synchronize_irq(priv); |
| |
| if (priv->mac80211_registered) |
| ieee80211_stop_queues(priv->hw); |
| |
| /* If we have not previously called iwl4965_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_GEO_CONFIGURED, &priv->status) << |
| STATUS_GEO_CONFIGURED | |
| 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_GEO_CONFIGURED, &priv->status) << |
| STATUS_GEO_CONFIGURED | |
| 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); |
| |
| iwl4965_hw_txq_ctx_stop(priv); |
| iwl4965_hw_rxq_stop(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!iwl_grab_nic_access(priv)) { |
| iwl_write_prph(priv, APMG_CLK_DIS_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| iwl_release_nic_access(priv); |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| udelay(5); |
| |
| iwl4965_hw_nic_stop_master(priv); |
| iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| iwl4965_hw_nic_reset(priv); |
| priv->cfg->ops->lib->free_shared_mem(priv); |
| |
| exit: |
| memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp)); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| priv->ibss_beacon = NULL; |
| |
| /* clear out any free frames */ |
| iwl4965_clear_free_frames(priv); |
| } |
| |
| static void iwl4965_down(struct iwl_priv *priv) |
| { |
| mutex_lock(&priv->mutex); |
| __iwl4965_down(priv); |
| mutex_unlock(&priv->mutex); |
| |
| iwl4965_cancel_deferred_work(priv); |
| } |
| |
| #define MAX_HW_RESTARTS 5 |
| |
| static int __iwl4965_up(struct iwl_priv *priv) |
| { |
| int i; |
| int ret; |
| |
| 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"); |
| iwl_rfkill_set_hw_state(priv); |
| return -ENODEV; |
| } |
| |
| if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { |
| IWL_ERROR("ucode not available for device bringup\n"); |
| return -EIO; |
| } |
| |
| /* If platform's RF_KILL switch is NOT set to KILL */ |
| if (iwl_read32(priv, CSR_GP_CNTRL) & |
| CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| else { |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) { |
| iwl_rfkill_set_hw_state(priv); |
| IWL_WARNING("Radio disabled by HW RF Kill switch\n"); |
| return -ENODEV; |
| } |
| } |
| |
| iwl_rfkill_set_hw_state(priv); |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| |
| ret = priv->cfg->ops->lib->alloc_shared_mem(priv); |
| if (ret) { |
| IWL_ERROR("Unable to allocate shared memory\n"); |
| return ret; |
| } |
| |
| ret = iwl_hw_nic_init(priv); |
| if (ret) { |
| IWL_ERROR("Unable to init nic\n"); |
| return ret; |
| } |
| |
| /* make sure rfkill handshake bits are cleared */ |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| /* clear (again), then enable host interrupts */ |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| iwl4965_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); |
| |
| /* We return success when we resume from suspend and rf_kill is on. */ |
| if (test_bit(STATUS_RF_KILL_HW, &priv->status)) |
| return 0; |
| |
| for (i = 0; i < MAX_HW_RESTARTS; i++) { |
| |
| iwlcore_clear_stations_table(priv); |
| |
| /* load bootstrap state machine, |
| * load bootstrap program into processor's memory, |
| * prepare to load the "initialize" uCode */ |
| ret = priv->cfg->ops->lib->load_ucode(priv); |
| |
| if (ret) { |
| IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret); |
| continue; |
| } |
| |
| /* start card; "initialize" will load runtime ucode */ |
| iwl4965_nic_start(priv); |
| |
| IWL_DEBUG_INFO(DRV_NAME " is coming up\n"); |
| |
| return 0; |
| } |
| |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| __iwl4965_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 iwl4965_bg_init_alive_start(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, init_alive_start.work); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| priv->cfg->ops->lib->init_alive_start(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_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); |
| iwl4965_alive_start(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_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_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 { |
| /* make sure mac80211 stop sending Tx frame */ |
| if (priv->mac80211_registered) |
| ieee80211_stop_queues(priv->hw); |
| |
| 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"); |
| } |
| iwl_rfkill_set_hw_state(priv); |
| |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_bg_set_monitor(struct work_struct *work) |
| { |
| struct iwl_priv *priv = container_of(work, |
| struct iwl_priv, set_monitor); |
| |
| IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n"); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_is_ready(priv)) |
| IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n"); |
| else |
| if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0) |
| IWL_ERROR("iwl4965_set_mode() failed\n"); |
| |
| mutex_unlock(&priv->mutex); |
| } |
| |
| #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) |
| |
| static void iwl4965_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_SCAN, "Scan completion watchdog resetting " |
| "adapter (%dms)\n", |
| jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG)); |
| |
| if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| iwl4965_send_scan_abort(priv); |
| } |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_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 iwl4965_scan_cmd), |
| .meta.flags = CMD_SIZE_HUGE, |
| }; |
| struct iwl4965_scan_cmd *scan; |
| struct ieee80211_conf *conf = NULL; |
| u16 cmd_len; |
| enum ieee80211_band band; |
| u8 direct_mask; |
| int ret = 0; |
| |
| 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"); |
| ret = -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 iwl4965_scan_cmd) + |
| IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
| if (!priv->scan) { |
| ret = -ENOMEM; |
| goto done; |
| } |
| } |
| scan = priv->scan; |
| memset(scan, 0, sizeof(struct iwl4965_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; |
| |
| extra = (suspend_time / interval) << 22; |
| scan_suspend_time = (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", |
| iwl4965_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) { |
| IWL_DEBUG_SCAN |
| ("Kicking off one direct scan for '%s' when not associated\n", |
| iwl4965_escape_essid(priv->essid, 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 { |
| IWL_DEBUG_SCAN("Kicking off one indirect scan.\n"); |
| direct_mask = 0; |
| } |
| |
| scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
| scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id; |
| scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| |
| |
| switch (priv->scan_bands) { |
| case 2: |
| scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
| scan->tx_cmd.rate_n_flags = |
| iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP, |
| RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK); |
| |
| scan->good_CRC_th = 0; |
| band = IEEE80211_BAND_2GHZ; |
| break; |
| |
| case 1: |
| scan->tx_cmd.rate_n_flags = |
| iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP, |
| RATE_MCS_ANT_B_MSK); |
| scan->good_CRC_th = IWL_GOOD_CRC_TH; |
| band = IEEE80211_BAND_5GHZ; |
| break; |
| |
| default: |
| IWL_WARNING("Invalid scan band count\n"); |
| goto done; |
| } |
| |
| /* We don't build a direct scan probe request; the uCode will do |
| * that based on the direct_mask added to each channel entry */ |
| cmd_len = iwl4965_fill_probe_req(priv, band, |
| (struct ieee80211_mgmt *)scan->data, |
| IWL_MAX_SCAN_SIZE - sizeof(*scan), 0); |
| |
| scan->tx_cmd.len = cpu_to_le16(cmd_len); |
| /* select Rx chains */ |
| |
| /* Force use of chains B and C (0x6) for scan Rx. |
| * Avoid A (0x1) because of its off-channel reception on A-band. |
| * MIMO is not used here, but value is required to make uCode happy. */ |
| scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK | |
| cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) | |
| (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) | |
| (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS)); |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) |
| scan->filter_flags = RXON_FILTER_PROMISC_MSK; |
| |
| if (direct_mask) |
| scan->channel_count = |
| iwl4965_get_channels_for_scan( |
| priv, band, 1, /* active */ |
| direct_mask, |
| (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); |
| else |
| scan->channel_count = |
| iwl4965_get_channels_for_scan( |
| priv, band, 0, /* passive */ |
| direct_mask, |
| (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); |
| |
| scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | |
| RXON_FILTER_BCON_AWARE_MSK); |
| cmd.len += le16_to_cpu(scan->tx_cmd.len) + |
| scan->channel_count * sizeof(struct iwl4965_scan_channel); |
| cmd.data = scan; |
| scan->len = cpu_to_le16(cmd.len); |
| |
| set_bit(STATUS_SCAN_HW, &priv->status); |
| ret = iwl_send_cmd_sync(priv, &cmd); |
| if (ret) |
| goto done; |
| |
| queue_delayed_work(priv->workqueue, &priv->scan_check, |
| IWL_SCAN_CHECK_WATCHDOG); |
| |
| mutex_unlock(&priv->mutex); |
| return; |
| |
| done: |
| /* inform mac80211 scan aborted */ |
| queue_work(priv->workqueue, &priv->scan_completed); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_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); |
| __iwl4965_up(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl4965_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; |
| |
| iwl4965_down(priv); |
| queue_work(priv->workqueue, &priv->up); |
| } |
| |
| static void iwl4965_bg_rx_replenish(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, rx_replenish); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| iwl_rx_replenish(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| #define IWL_DELAY_NEXT_SCAN (HZ*2) |
| |
| static void iwl4965_post_associate(struct iwl_priv *priv) |
| { |
| struct ieee80211_conf *conf = NULL; |
| int ret = 0; |
| 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; |
| |
| |
| if (!priv->vif || !priv->is_open) |
| return; |
| |
| iwl4965_scan_cancel_timeout(priv, 200); |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl4965_commit_rxon(priv); |
| |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd)); |
| iwl4965_setup_rxon_timing(priv); |
| ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), &priv->rxon_timing); |
| if (ret) |
| IWL_WARNING("REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| |
| #ifdef CONFIG_IWL4965_HT |
| if (priv->current_ht_config.is_ht) |
| iwl_set_rxon_ht(priv, &priv->current_ht_config); |
| #endif /* CONFIG_IWL4965_HT*/ |
| iwl_set_rxon_chain(priv); |
| 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; |
| |
| } |
| |
| iwl4965_commit_rxon(priv); |
| |
| switch (priv->iw_mode) { |
| case IEEE80211_IF_TYPE_STA: |
| iwl4965_rate_scale_init(priv->hw, IWL_AP_ID); |
| break; |
| |
| case IEEE80211_IF_TYPE_IBSS: |
| |
| /* clear out the station table */ |
| iwlcore_clear_stations_table(priv); |
| |
| iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0); |
| iwl4965_rxon_add_station(priv, priv->bssid, 0); |
| iwl4965_rate_scale_init(priv->hw, IWL_STA_ID); |
| iwl4965_send_beacon_cmd(priv); |
| |
| break; |
| |
| default: |
| IWL_ERROR("%s Should not be called in %d mode\n", |
| __FUNCTION__, priv->iw_mode); |
| break; |
| } |
| |
| iwl4965_sequence_reset(priv); |
| |
| /* Enable Rx differential gain and sensitivity calibrations */ |
| iwl_chain_noise_reset(priv); |
| priv->start_calib = 1; |
| |
| if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) |
| priv->assoc_station_added = 1; |
| |
| iwl4965_activate_qos(priv, 0); |
| |
| iwl_power_update_mode(priv, 0); |
| /* we have just associated, don't start scan too early */ |
| priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN; |
| } |
| |
| |
| static void iwl4965_bg_post_associate(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, |
| post_associate.work); |
| |
| mutex_lock(&priv->mutex); |
| iwl4965_post_associate(priv); |
| mutex_unlock(&priv->mutex); |
| |
| } |
| |
| static void iwl4965_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); |
| iwl4965_send_scan_abort(priv); |
| |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
| |
| static void iwl4965_bg_scan_completed(struct work_struct *work) |
| { |
| struct iwl_priv *priv = |
| container_of(work, struct iwl_priv, scan_completed); |
| |
| IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n"); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (test_bit(STATUS_CONF_PENDING, &priv->status)) |
| iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw)); |
| |
| ieee80211_scan_completed(priv->hw); |
| |
| /* Since setting the TXPOWER may have been deferred while |
| * performing the scan, fire one off */ |
| mutex_lock(&priv->mutex); |
| iwl4965_hw_reg_send_txpower(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| /***************************************************************************** |
| * |
| * mac80211 entry point functions |
| * |
| *****************************************************************************/ |
| |
| #define UCODE_READY_TIMEOUT (2 * HZ) |
| |
| static int iwl4965_mac_start(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| int ret; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (pci_enable_device(priv->pci_dev)) { |
| IWL_ERROR("Fail to pci_enable_device\n"); |
| return -ENODEV; |
| } |
| pci_restore_state(priv->pci_dev); |
| pci_enable_msi(priv->pci_dev); |
| |
| ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED, |
| DRV_NAME, priv); |
| if (ret) { |
| IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq); |
| goto out_disable_msi; |
| } |
| |
| /* we should be verifying the device is ready to be opened */ |
| mutex_lock(&priv->mutex); |
| |
| memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd)); |
| /* fetch ucode file from disk, alloc and copy to bus-master buffers ... |
| * ucode filename and max sizes are card-specific. */ |
| |
| if (!priv->ucode_code.len) { |
| ret = iwl4965_read_ucode(priv); |
| if (ret) { |
| IWL_ERROR("Could not read microcode: %d\n", ret); |
| mutex_unlock(&priv->mutex); |
| goto out_release_irq; |
| } |
| } |
| |
| ret = __iwl4965_up(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| if (ret) |
| goto out_release_irq; |
| |
| IWL_DEBUG_INFO("Start UP work done.\n"); |
| |
| if (test_bit(STATUS_IN_SUSPEND, &priv->status)) |
| return 0; |
| |
| /* Wait for START_ALIVE from ucode. Otherwise callbacks from |
| * mac80211 will not be run successfully. */ |
| ret = wait_event_interruptible_timeout(priv->wait_command_queue, |
| test_bit(STATUS_READY, &priv->status), |
| UCODE_READY_TIMEOUT); |
| if (!ret) { |
| if (!test_bit(STATUS_READY, &priv->status)) { |
| IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n", |
| jiffies_to_msecs(UCODE_READY_TIMEOUT)); |
| ret = -ETIMEDOUT; |
| goto out_release_irq; |
| } |
| } |
| |
| priv->is_open = 1; |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| |
| out_release_irq: |
| free_irq(priv->pci_dev->irq, priv); |
| out_disable_msi: |
| pci_disable_msi(priv->pci_dev); |
| pci_disable_device(priv->pci_dev); |
| priv->is_open = 0; |
| IWL_DEBUG_MAC80211("leave - failed\n"); |
| return ret; |
| } |
| |
| static void iwl4965_mac_stop(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (!priv->is_open) { |
| IWL_DEBUG_MAC80211("leave - skip\n"); |
| return; |
| } |
| |
| priv->is_open = 0; |
| |
| if (iwl_is_ready_rf(priv)) { |
| /* stop mac, cancel any scan request and clear |
| * RXON_FILTER_ASSOC_MSK BIT |
| */ |
| mutex_lock(&priv->mutex); |
| iwl4965_scan_cancel_timeout(priv, 100); |
| cancel_delayed_work(&priv->post_associate); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| iwl4965_down(priv); |
| |
| flush_workqueue(priv->workqueue); |
| free_irq(priv->pci_dev->irq, priv); |
| pci_disable_msi(priv->pci_dev); |
| pci_save_state(priv->pci_dev); |
| pci_disable_device(priv->pci_dev); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| } |
| |
| static int iwl4965_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->bitrate); |
| |
| if (iwl4965_tx_skb(priv, skb, ctl)) |
| dev_kfree_skb_any(skb); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| static int iwl4965_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: type %d\n", conf->type); |
| |
| if (priv->vif) { |
| IWL_DEBUG_MAC80211("leave - vif != NULL\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->vif = conf->vif; |
| |
| 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); |
| } |
| |
| if (iwl_is_ready(priv)) |
| iwl4965_set_mode(priv, conf->type); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| /** |
| * iwl4965_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 iwl4965_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; |
| int ret = 0; |
| |
| mutex_lock(&priv->mutex); |
| IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value); |
| |
| priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP); |
| |
| if (!iwl_is_ready(priv)) { |
| IWL_DEBUG_MAC80211("leave - not ready\n"); |
| ret = -EIO; |
| goto out; |
| } |
| |
| if (unlikely(!priv->cfg->mod_params->disable_hw_scan && |
| test_bit(STATUS_SCANNING, &priv->status))) { |
| IWL_DEBUG_MAC80211("leave - scanning\n"); |
| set_bit(STATUS_CONF_PENDING, &priv->status); |
| mutex_unlock(&priv->mutex); |
| return 0; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| ch_info = iwl_get_channel_info(priv, conf->channel->band, |
| ieee80211_frequency_to_channel(conf->channel->center_freq)); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_MAC80211("leave - invalid channel\n"); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| #ifdef CONFIG_IWL4965_HT |
| /* if we are switching from ht to 2.4 clear flags |
| * from any ht related info since 2.4 does not |
| * support ht */ |
| if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value) |
| #ifdef IEEE80211_CONF_CHANNEL_SWITCH |
| && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) |
| #endif |
| ) |
| priv->staging_rxon.flags = 0; |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| iwl_set_rxon_channel(priv, conf->channel->band, |
| ieee80211_frequency_to_channel(conf->channel->center_freq)); |
| |
| iwl4965_set_flags_for_phymode(priv, conf->channel->band); |
| |
| /* The list of supported rates and rate mask can be different |
| * for each band; since the band may have changed, reset |
| * the rate mask to what mac80211 lists */ |
| iwl4965_set_rate(priv); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| #ifdef IEEE80211_CONF_CHANNEL_SWITCH |
| if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) { |
| iwl4965_hw_channel_switch(priv, conf->channel); |
| goto out; |
| } |
| #endif |
| |
| if (priv->cfg->ops->lib->radio_kill_sw) |
| priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled); |
| |
| if (!conf->radio_enabled) { |
| IWL_DEBUG_MAC80211("leave - radio disabled\n"); |
| goto out; |
| } |
| |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_MAC80211("leave - RF kill\n"); |
| ret = -EIO; |
| goto out; |
| } |
| |
| iwl4965_set_rate(priv); |
| |
| if (memcmp(&priv->active_rxon, |
| &priv->staging_rxon, sizeof(priv->staging_rxon))) |
| iwl4965_commit_rxon(priv); |
| else |
| IWL_DEBUG_INFO("No re-sending same RXON configuration.\n"); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| out: |
| clear_bit(STATUS_CONF_PENDING, &priv->status); |
| mutex_unlock(&priv->mutex); |
| return ret; |
| } |
| |
| static void iwl4965_config_ap(struct iwl_priv *priv) |
| { |
| int ret = 0; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 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; |
| iwl4965_commit_rxon(priv); |
| |
| /* RXON Timing */ |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd)); |
| iwl4965_setup_rxon_timing(priv); |
| ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), &priv->rxon_timing); |
| if (ret) |
| IWL_WARNING("REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| iwl_set_rxon_chain(priv); |
| |
| /* FIXME: what should be the assoc_id for AP? */ |
| priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); |
| if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) |
| priv->staging_rxon.flags |= |
| RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| |
| if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { |
| if (priv->assoc_capability & |
| WLAN_CAPABILITY_SHORT_SLOT_TIME) |
| priv->staging_rxon.flags |= |
| RXON_FLG_SHORT_SLOT_MSK; |
| else |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| if (priv->iw_mode == 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; |
| iwl4965_commit_rxon(priv); |
| iwl4965_activate_qos(priv, 1); |
| iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0); |
| } |
| iwl4965_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 iwl4965_mac_config_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| 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; |
| |
| if (priv->vif != vif) { |
| IWL_DEBUG_MAC80211("leave - priv->vif != vif\n"); |
| return 0; |
| } |
| |
| 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; |
| } |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| mutex_lock(&priv->mutex); |
| |
| 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 (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 (iwl_is_rfkill(priv)) |
| goto done; |
| |
| 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 (iwl4965_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) |
| iwl4965_config_ap(priv); |
| else { |
| rc = iwl4965_commit_rxon(priv); |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc) |
| iwl4965_rxon_add_station( |
| priv, priv->active_rxon.bssid_addr, 1); |
| } |
| |
| } else { |
| iwl4965_scan_cancel_timeout(priv, 100); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl4965_commit_rxon(priv); |
| } |
| |
| done: |
| 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 iwl4965_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 iwl4965_connection_init_rx_config |
| */ |
| struct iwl_priv *priv = hw->priv; |
| int new_flags = 0; |
| if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { |
| if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { |
| IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n", |
| IEEE80211_IF_TYPE_MNTR, |
| changed_flags, *total_flags); |
| /* queue work 'cuz mac80211 is holding a lock which |
| * prevents us from issuing (synchronous) f/w cmds */ |
| queue_work(priv->workqueue, &priv->set_monitor); |
| new_flags &= FIF_PROMISC_IN_BSS | |
| FIF_OTHER_BSS | |
| FIF_ALLMULTI; |
| } |
| } |
| *total_flags = new_flags; |
| } |
| |
| static void iwl4965_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); |
| |
| if (iwl_is_ready_rf(priv)) { |
| iwl4965_scan_cancel_timeout(priv, 100); |
| cancel_delayed_work(&priv->post_associate); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl4965_commit_rxon(priv); |
| } |
| if (priv->vif == conf->vif) { |
| priv->vif = NULL; |
| 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_AFTER_ASSOC (HZ*6) |
| static void iwl4965_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf, |
| u32 changes) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211("changes = 0x%X\n", changes); |
| |
| if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
| IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n", |
| bss_conf->use_short_preamble); |
| if (bss_conf->use_short_preamble) |
| priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| } |
| |
| if (changes & BSS_CHANGED_ERP_CTS_PROT) { |
| IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); |
| if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) |
| priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK; |
| else |
| priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
| } |
| |
| if (changes & BSS_CHANGED_HT) { |
| IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht); |
| iwl4965_ht_conf(priv, bss_conf); |
| iwl_set_rxon_chain(priv); |
| } |
| |
| if (changes & BSS_CHANGED_ASSOC) { |
| IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc); |
| /* This should never happen as this function should |
| * never be called from interrupt context. */ |
| if (WARN_ON_ONCE(in_interrupt())) |
| return; |
| if (bss_conf->assoc) { |
| priv->assoc_id = bss_conf->aid; |
| priv->beacon_int = bss_conf->beacon_int; |
| priv->timestamp = bss_conf->timestamp; |
| priv->assoc_capability = bss_conf->assoc_capability; |
| priv->next_scan_jiffies = jiffies + |
| IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; |
| mutex_lock(&priv->mutex); |
| iwl4965_post_associate(priv); |
| mutex_unlock(&priv->mutex); |
| } else { |
| priv->assoc_id = 0; |
| IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc); |
| } |
| } else if (changes && iwl_is_associated(priv) && priv->assoc_id) { |
| IWL_DEBUG_MAC80211("Associated Changes %d\n", changes); |
| iwl_send_rxon_assoc(priv); |
| } |
| |
| } |
| |
| static int iwl4965_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; |
| } |
| |
| /* we don't schedule scan within next_scan_jiffies period */ |
| if (priv->next_scan_jiffies && |
| time_after(priv->next_scan_jiffies, jiffies)) { |
| rc = -EAGAIN; |
| 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 ", |
| iwl4965_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 = iwl4965_scan_initiate(priv); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| out_unlock: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| mutex_unlock(&priv->mutex); |
| |
| return rc; |
| } |
| |
| static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw, |
| struct ieee80211_key_conf *keyconf, const u8 *addr, |
| u32 iv32, u16 *phase1key) |
| { |
| struct iwl_priv *priv = hw->priv; |
| u8 sta_id = IWL_INVALID_STATION; |
| unsigned long flags; |
| __le16 key_flags = 0; |
| int i; |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| sta_id = iwl_find_station(priv, addr); |
| if (sta_id == IWL_INVALID_STATION) { |
| IWL_DEBUG_MAC80211("leave - %s not in station map.\n", |
| print_mac(mac, addr)); |
| return; |
| } |
| |
| iwl4965_scan_cancel_timeout(priv, 100); |
| |
| key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); |
| key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| key_flags &= ~STA_KEY_FLG_INVALID; |
| |
| if (sta_id == priv->hw_params.bcast_sta_id) |
| key_flags |= STA_KEY_MULTICAST_MSK; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| priv->stations[sta_id].sta.key.key_flags = key_flags; |
| priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; |
| |
| for (i = 0; i < 5; i++) |
| priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = |
| cpu_to_le16(phase1key[i]); |
| |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| } |
| |
| static int iwl4965_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; |
| DECLARE_MAC_BUF(mac); |
| int ret = 0; |
| u8 sta_id = IWL_INVALID_STATION; |
| u8 is_default_wep_key = 0; |
| |
| IWL_DEBUG_MAC80211("enter\n"); |
| |
| if (priv->hw_params.sw_crypto) { |
| IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_zero_ether_addr(addr)) |
| /* only support pairwise keys */ |
| return -EOPNOTSUPP; |
| |
| sta_id = iwl_find_station(priv, addr); |
| if (sta_id == IWL_INVALID_STATION) { |
| IWL_DEBUG_MAC80211("leave - %s not in station map.\n", |
| print_mac(mac, addr)); |
| return -EINVAL; |
| |
| } |
| |
| mutex_lock(&priv->mutex); |
| iwl4965_scan_cancel_timeout(priv, 100); |
| mutex_unlock(&priv->mutex); |
| |
| /* If we are getting WEP group key and we didn't receive any key mapping |
| * so far, we are in legacy wep mode (group key only), otherwise we are |
| * in 1X mode. |
| * In legacy wep mode, we use another host command to the uCode */ |
| if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id && |
| priv->iw_mode != IEEE80211_IF_TYPE_AP) { |
| if (cmd == SET_KEY) |
| is_default_wep_key = !priv->key_mapping_key; |
| else |
| is_default_wep_key = priv->default_wep_key; |
| } |
| |
| switch (cmd) { |
| case SET_KEY: |
| if (is_default_wep_key) |
| ret = iwl_set_default_wep_key(priv, key); |
| else |
| ret = iwl_set_dynamic_key(priv, key, sta_id); |
| |
| IWL_DEBUG_MAC80211("enable hwcrypto key\n"); |
| break; |
| case DISABLE_KEY: |
| if (is_default_wep_key) |
| ret = iwl_remove_default_wep_key(priv, key); |
| else |
| ret = iwl_remove_dynamic_key(priv, key, sta_id); |
| |
| IWL_DEBUG_MAC80211("disable hwcrypto key\n"); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return ret; |
| } |
| |
| static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| int q; |
| |
| 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; |
| } |
| |
| 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->txop * 32)); |
| |
| 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) |
| iwl4965_activate_qos(priv, 1); |
| else if (priv->assoc_id && iwl_is_associated(priv)) |
| iwl4965_activate_qos(priv, 0); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| return 0; |
| } |
| |
| static int iwl4965_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 iwl4965_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 = iwl4965_queue_space(q); |
| |
| stats[i].len = q->n_window - avail; |
| stats[i].limit = q->n_window - q->high_mark; |
| stats[i].count = q->n_window; |
| |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return 0; |
| } |
| |
| static int iwl4965_mac_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| priv = hw->priv; |
| IWL_DEBUG_MAC80211("enter\n"); |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return 0; |
| } |
| |
| static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv; |
| |
| priv = hw->priv; |
| IWL_DEBUG_MAC80211("enter\n"); |
| IWL_DEBUG_MAC80211("leave\n"); |
| |
| return 0; |
| } |
| |
| static void iwl4965_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"); |
| |
| priv->lq_mngr.lq_ready = 0; |
| #ifdef CONFIG_IWL4965_HT |
| spin_lock_irqsave(&priv->lock, flags); |
| memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info)); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| iwl_reset_qos(priv); |
| |
| cancel_delayed_work(&priv->post_associate); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| priv->assoc_id = 0; |
| priv->assoc_capability = 0; |
| priv->assoc_station_added = 0; |
| |
| /* new association get rid of ibss beacon skb */ |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| priv->ibss_beacon = NULL; |
| |
| priv->beacon_int = priv->hw->conf.beacon_int; |
| priv->timestamp = 0; |
| if ((priv->iw_mode == IEEE80211_IF_TYPE_STA)) |
| priv->beacon_int = 0; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211("leave - not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| /* we are restarting association process |
| * clear RXON_FILTER_ASSOC_MSK bit |
| */ |
| if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { |
| iwl4965_scan_cancel_timeout(priv, 100); |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl4965_commit_rxon(priv); |
| } |
| |
| iwl_power_update_mode(priv, 0); |
| |
| /* 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; |
| } |
| |
| iwl4965_set_rate(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211("leave\n"); |
| } |
| |
| static int iwl4965_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); |
| |
| iwl_reset_qos(priv); |
| |
| 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 *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| |
| return sprintf(buf, "0x%08X\n", priv->debug_level); |
| } |
| static ssize_t store_debug_level(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| 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 |
| priv->debug_level = val; |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| show_debug_level, store_debug_level); |
| |
| |
| #endif /* CONFIG_IWLWIFI_DEBUG */ |
| |
| |
| static ssize_t show_version(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = d->driver_data; |
| struct iwl4965_alive_resp *palive = &priv->card_alive; |
| |
| if (palive->is_valid) |
| return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n" |
| "fw type: 0x%01X 0x%01X\n", |
| palive->ucode_major, palive->ucode_minor, |
| palive->sw_rev[0], palive->sw_rev[1], |
| palive->ver_type, palive->ver_subtype); |
| |
| else |
| return sprintf(buf, "fw not loaded\n"); |
| } |
| |
| static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL); |
| |
| static ssize_t show_temperature(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = (struct iwl_priv *)d->driver_data; |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", iwl4965_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 iwl4965_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 |
| iwl4965_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 (iwl4965_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); |
| iwl4965_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 (iwl4965_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); |
| iwl4965_commit_rxon(priv); |
| } |
| } |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, |
| store_filter_flags); |
| |
| #ifdef CONFIG_IWL4965_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 iwl4965_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); |
| iwl4965_get_measurement(priv, ¶ms, type); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, |
| show_measurement, store_measurement); |
| #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */ |
| |
| 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; |
| } |
| |
| rc = iwl_power_set_user_mode(priv, mode); |
| if (rc) { |
| IWL_DEBUG_MAC80211("failed setting power mode.\n"); |
| goto out; |
| } |
| 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 = priv->power_data.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"); |
| */ |
| 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) |
| { |
| /* all this shit doesn't belong into sysfs anyway */ |
| return 0; |
| } |
| |
| 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 iwl4965_notif_statistics); |
| u32 len = 0, ofs = 0; |
| u8 *data = (u8 *) & priv->statistics; |
| int rc = 0; |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| mutex_lock(&priv->mutex); |
| rc = iwl_send_statistics_request(priv, 0); |
| mutex_unlock(&priv->mutex); |
| |
| if (rc) { |
| len = sprintf(buf, |
| "Error sending statistics request: 0x%08X\n", rc); |
| return len; |
| } |
| |
| while (size && (PAGE_SIZE - len)) { |
| hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
| PAGE_SIZE - len, 1); |
| len = strlen(buf); |
| if (PAGE_SIZE - len) |
| buf[len++] = '\n'; |
| |
| ofs += 16; |
| size -= min(size, 16U); |
| } |
| |
| return len; |
| } |
| |
| static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); |
| |
| static ssize_t show_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') |
| iwl4965_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') |
| iwl4965_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 iwl4965_setup_deferred_work(struct iwl_priv *priv) |
| { |
| priv->workqueue = create_workqueue(DRV_NAME); |
| |
| init_waitqueue_head(&priv->wait_command_queue); |
| |
| INIT_WORK(&priv->up, iwl4965_bg_up); |
| INIT_WORK(&priv->restart, iwl4965_bg_restart); |
| INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish); |
| INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed); |
| INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan); |
| INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan); |
| INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill); |
| INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update); |
| INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor); |
| INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate); |
| INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start); |
| INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start); |
| INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check); |
| |
| iwl4965_hw_setup_deferred_work(priv); |
| |
| tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) |
| iwl4965_irq_tasklet, (unsigned long)priv); |
| } |
| |
| static void iwl4965_cancel_deferred_work(struct iwl_priv *priv) |
| { |
| iwl4965_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 *iwl4965_sysfs_entries[] = { |
| &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_IWL4965_SPECTRUM_MEASUREMENT |
| &dev_attr_measurement.attr, |
| #endif |
| &dev_attr_power_level.attr, |
| &dev_attr_retry_rate.attr, |
| &dev_attr_rs_window.attr, |
| &dev_attr_statistics.attr, |
| &dev_attr_status.attr, |
| &dev_attr_temperature.attr, |
| &dev_attr_tx_power.attr, |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| &dev_attr_debug_level.attr, |
| #endif |
| &dev_attr_version.attr, |
| |
| NULL |
| }; |
| |
| static struct attribute_group iwl4965_attribute_group = { |
| .name = NULL, /* put in device directory */ |
| .attrs = iwl4965_sysfs_entries, |
| }; |
| |
| static struct ieee80211_ops iwl4965_hw_ops = { |
| .tx = iwl4965_mac_tx, |
| .start = iwl4965_mac_start, |
| .stop = iwl4965_mac_stop, |
| .add_interface = iwl4965_mac_add_interface, |
| .remove_interface = iwl4965_mac_remove_interface, |
| .config = iwl4965_mac_config, |
| .config_interface = iwl4965_mac_config_interface, |
| .configure_filter = iwl4965_configure_filter, |
| .set_key = iwl4965_mac_set_key, |
| .update_tkip_key = iwl4965_mac_update_tkip_key, |
| .get_stats = iwl4965_mac_get_stats, |
| .get_tx_stats = iwl4965_mac_get_tx_stats, |
| .conf_tx = iwl4965_mac_conf_tx, |
| .get_tsf = iwl4965_mac_get_tsf, |
| .reset_tsf = iwl4965_mac_reset_tsf, |
| .beacon_update = iwl4965_mac_beacon_update, |
| .bss_info_changed = iwl4965_bss_info_changed, |
| #ifdef CONFIG_IWL4965_HT |
| .ampdu_action = iwl4965_mac_ampdu_action, |
| #endif /* CONFIG_IWL4965_HT */ |
| .hw_scan = iwl4965_mac_hw_scan |
| }; |
| |
| static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| int err = 0; |
| struct iwl_priv *priv; |
| struct ieee80211_hw *hw; |
| struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); |
| unsigned long flags; |
| DECLARE_MAC_BUF(mac); |
| |
| /************************ |
| * 1. Allocating HW data |
| ************************/ |
| |
| /* Disabling hardware scan means that mac80211 will perform scans |
| * "the hard way", rather than using device's scan. */ |
| if (cfg->mod_params->disable_hw_scan) { |
| if (cfg->mod_params->debug & IWL_DL_INFO) |
| dev_printk(KERN_DEBUG, &(pdev->dev), |
| "Disabling hw_scan\n"); |
| iwl4965_hw_ops.hw_scan = NULL; |
| } |
| |
| hw = iwl_alloc_all(cfg, &iwl4965_hw_ops); |
| if (!hw) { |
| err = -ENOMEM; |
| goto out; |
| } |
| priv = hw->priv; |
| /* At this point both hw and priv are allocated. */ |
| |
| SET_IEEE80211_DEV(hw, &pdev->dev); |
| |
| IWL_DEBUG_INFO("*** LOAD DRIVER ***\n"); |
| priv->cfg = cfg; |
| priv->pci_dev = pdev; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| priv->debug_level = priv->cfg->mod_params->debug; |
| atomic_set(&priv->restrict_refcnt, 0); |
| #endif |
| |
| /************************** |
| * 2. Initializing PCI bus |
| **************************/ |
| if (pci_enable_device(pdev)) { |
| err = -ENODEV; |
| goto out_ieee80211_free_hw; |
| } |
| |
| pci_set_master(pdev); |
| |
| err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| if (err) { |
| err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| /* both attempts failed: */ |
| if (err) { |
| printk(KERN_WARNING "%s: No suitable DMA available.\n", |
| DRV_NAME); |
| goto out_pci_disable_device; |
| } |
| } |
| |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) |
| goto out_pci_disable_device; |
| |
| pci_set_drvdata(pdev, priv); |
| |
| /* 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); |
| |
| /*********************** |
| * 3. Read REV register |
| ***********************/ |
| priv->hw_base = pci_iomap(pdev, 0, 0); |
| if (!priv->hw_base) { |
| err = -ENODEV; |
| goto out_pci_release_regions; |
| } |
| |
| IWL_DEBUG_INFO("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); |
| |
| iwl_hw_detect(priv); |
| printk(KERN_INFO DRV_NAME |
| ": Detected Intel Wireless WiFi Link %s REV=0x%X\n", |
| priv->cfg->name, priv->hw_rev); |
| |
| /* amp init */ |
| err = priv->cfg->ops->lib->apm_ops.init(priv); |
| if (err < 0) { |
| IWL_DEBUG_INFO("Failed to init APMG\n"); |
| goto out_iounmap; |
| } |
| /***************** |
| * 4. Read EEPROM |
| *****************/ |
| /* Read the EEPROM */ |
| err = iwl_eeprom_init(priv); |
| if (err) { |
| IWL_ERROR("Unable to init EEPROM\n"); |
| goto out_iounmap; |
| } |
| err = iwl_eeprom_check_version(priv); |
| if (err) |
| goto out_iounmap; |
| |
| /* extract MAC Address */ |
| iwl_eeprom_get_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); |
| |
| /************************ |
| * 5. Setup HW constants |
| ************************/ |
| /* Device-specific setup */ |
| if (priv->cfg->ops->lib->set_hw_params(priv)) { |
| IWL_ERROR("failed to set hw parameters\n"); |
| goto out_free_eeprom; |
| } |
| |
| /******************* |
| * 6. Setup hw/priv |
| *******************/ |
| |
| err = iwl_setup(priv); |
| if (err) |
| goto out_free_eeprom; |
| /* At this point both hw and priv are initialized. */ |
| |
| /********************************** |
| * 7. Initialize module parameters |
| **********************************/ |
| |
| /* Disable radio (SW RF KILL) via parameter when loading driver */ |
| if (priv->cfg->mod_params->disable) { |
| set_bit(STATUS_RF_KILL_SW, &priv->status); |
| IWL_DEBUG_INFO("Radio disabled.\n"); |
| } |
| |
| if (priv->cfg->mod_params->enable_qos) |
| priv->qos_data.qos_enable = 1; |
| |
| /******************** |
| * 8. Setup services |
| ********************/ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl4965_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group); |
| if (err) { |
| IWL_ERROR("failed to create sysfs device attributes\n"); |
| goto out_free_eeprom; |
| } |
| |
| err = iwl_dbgfs_register(priv, DRV_NAME); |
| if (err) { |
| IWL_ERROR("failed to create debugfs files\n"); |
| goto out_remove_sysfs; |
| } |
| |
| iwl4965_setup_deferred_work(priv); |
| iwl4965_setup_rx_handlers(priv); |
| |
| /******************** |
| * 9. Conclude |
| ********************/ |
| pci_save_state(pdev); |
| pci_disable_device(pdev); |
| |
| /* notify iwlcore to init */ |
| iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT); |
| return 0; |
| |
| out_remove_sysfs: |
| sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); |
| out_free_eeprom: |
| iwl_eeprom_free(priv); |
| out_iounmap: |
| pci_iounmap(pdev, priv->hw_base); |
| out_pci_release_regions: |
| pci_release_regions(pdev); |
| pci_set_drvdata(pdev, NULL); |
| out_pci_disable_device: |
| pci_disable_device(pdev); |
| out_ieee80211_free_hw: |
| ieee80211_free_hw(priv->hw); |
| out: |
| return err; |
| } |
| |
| static void __devexit iwl4965_pci_remove(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| struct list_head *p, *q; |
| int i; |
| unsigned long flags; |
| |
| if (!priv) |
| return; |
| |
| IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n"); |
| |
| if (priv->mac80211_registered) { |
| ieee80211_unregister_hw(priv->hw); |
| priv->mac80211_registered = 0; |
| } |
| |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| iwl4965_down(priv); |
| |
| /* make sure we flush any pending irq or |
| * tasklet for the driver |
| */ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl4965_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_synchronize_irq(priv); |
| |
| /* 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 iwl4965_ibss_seq, list)); |
| } |
| } |
| |
| iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT); |
| iwl_dbgfs_unregister(priv); |
| sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); |
| |
| iwl4965_dealloc_ucode_pci(priv); |
| |
| if (priv->rxq.bd) |
| iwl_rx_queue_free(priv, &priv->rxq); |
| iwl_hw_txq_ctx_free(priv); |
| |
| iwlcore_clear_stations_table(priv); |
| iwl_eeprom_free(priv); |
| |
| |
| /*netif_stop_queue(dev); */ |
| flush_workqueue(priv->workqueue); |
| |
| /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes |
| * priv->workqueue... so we can't take down the workqueue |
| * until now... */ |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| |
| pci_iounmap(pdev, priv->hw_base); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| |
| iwl_free_channel_map(priv); |
| iwlcore_free_geos(priv); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| ieee80211_free_hw(priv->hw); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| |
| if (priv->is_open) { |
| set_bit(STATUS_IN_SUSPEND, &priv->status); |
| iwl4965_mac_stop(priv->hw); |
| priv->is_open = 1; |
| } |
| |
| pci_set_power_state(pdev, PCI_D3hot); |
| |
| return 0; |
| } |
| |
| static int iwl4965_pci_resume(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| |
| pci_set_power_state(pdev, PCI_D0); |
| |
| if (priv->is_open) |
| iwl4965_mac_start(priv->hw); |
| |
| clear_bit(STATUS_IN_SUSPEND, &priv->status); |
| return 0; |
| } |
| |
| #endif /* CONFIG_PM */ |
| |
| /***************************************************************************** |
| * |
| * driver and module entry point |
| * |
| *****************************************************************************/ |
| |
| /* Hardware specific file defines the PCI IDs table for that hardware module */ |
| static struct pci_device_id iwl_hw_card_ids[] = { |
| {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)}, |
| #ifdef CONFIG_IWL5000 |
| {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)}, |
| {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)}, |
| #endif /* CONFIG_IWL5000 */ |
| {0} |
| }; |
| MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); |
| |
| static struct pci_driver iwl_driver = { |
| .name = DRV_NAME, |
| .id_table = iwl_hw_card_ids, |
| .probe = iwl4965_pci_probe, |
| .remove = __devexit_p(iwl4965_pci_remove), |
| #ifdef CONFIG_PM |
| .suspend = iwl4965_pci_suspend, |
| .resume = iwl4965_pci_resume, |
| #endif |
| }; |
| |
| static int __init iwl4965_init(void) |
| { |
| |
| int ret; |
| printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); |
| printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); |
| |
| ret = iwl4965_rate_control_register(); |
| if (ret) { |
| IWL_ERROR("Unable to register rate control algorithm: %d\n", ret); |
| return ret; |
| } |
| |
| ret = pci_register_driver(&iwl_driver); |
| if (ret) { |
| IWL_ERROR("Unable to initialize PCI module\n"); |
| goto error_register; |
| } |
| |
| return ret; |
| |
| error_register: |
| iwl4965_rate_control_unregister(); |
| return ret; |
| } |
| |
| static void __exit iwl4965_exit(void) |
| { |
| pci_unregister_driver(&iwl_driver); |
| iwl4965_rate_control_unregister(); |
| } |
| |
| module_exit(iwl4965_exit); |
| module_init(iwl4965_init); |