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linux/drivers/net/wireless/iwlwifi/iwl-agn.c
Johannes Berg 5c40d8603d iwlwifi: make EXIT_PENDING depend on mac80211 
There's no reason to set EXIT_PENDING when we
start removing the module, as mac80211 will
cleanly shut down the device in this case.
Additionally, there's no point in rejecting
commands to the device when we're cleaning up
as that only leads to unwanted errors from
mac80211 being printed, such as
  failed to remove key (...) from hardware (-16)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06 15:16:10 -05:00

1553 lines
44 KiB
C
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/******************************************************************************
*
* Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <net/mac80211.h>
#include <asm/div64.h>
#include "iwl-ucode.h"
#include "iwl-eeprom.h"
#include "iwl-wifi.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-agn-calib.h"
#include "iwl-agn.h"
#include "iwl-shared.h"
#include "iwl-trans.h"
#include "iwl-op-mode.h"
/******************************************************************************
*
* module boiler plate
*
******************************************************************************/
/*
* module name, copyright, version, etc.
*/
#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
#ifdef CONFIG_IWLWIFI_DEBUG
#define VD "d"
#else
#define VD
#endif
#define DRV_VERSION IWLWIFI_VERSION VD
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");
MODULE_ALIAS("iwlagn");
void iwl_update_chain_flags(struct iwl_priv *priv)
{
struct iwl_rxon_context *ctx;
for_each_context(priv, ctx) {
iwlagn_set_rxon_chain(priv, ctx);
if (ctx->active.rx_chain != ctx->staging.rx_chain)
iwlagn_commit_rxon(priv, ctx);
}
}
/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
static void iwl_set_beacon_tim(struct iwl_priv *priv,
struct iwl_tx_beacon_cmd *tx_beacon_cmd,
u8 *beacon, u32 frame_size)
{
u16 tim_idx;
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
/*
* The index is relative to frame start but we start looking at the
* variable-length part of the beacon.
*/
tim_idx = mgmt->u.beacon.variable - beacon;
/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
while ((tim_idx < (frame_size - 2)) &&
(beacon[tim_idx] != WLAN_EID_TIM))
tim_idx += beacon[tim_idx+1] + 2;
/* If TIM field was found, set variables */
if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
tx_beacon_cmd->tim_size = beacon[tim_idx+1];
} else
IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
}
int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
{
struct iwl_tx_beacon_cmd *tx_beacon_cmd;
struct iwl_host_cmd cmd = {
.id = REPLY_TX_BEACON,
.flags = CMD_SYNC,
};
struct ieee80211_tx_info *info;
u32 frame_size;
u32 rate_flags;
u32 rate;
/*
* We have to set up the TX command, the TX Beacon command, and the
* beacon contents.
*/
lockdep_assert_held(&priv->shrd->mutex);
if (!priv->beacon_ctx) {
IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
return 0;
}
if (WARN_ON(!priv->beacon_skb))
return -EINVAL;
/* Allocate beacon command */
if (!priv->beacon_cmd)
priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
tx_beacon_cmd = priv->beacon_cmd;
if (!tx_beacon_cmd)
return -ENOMEM;
frame_size = priv->beacon_skb->len;
/* Set up TX command fields */
tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
/* Set up TX beacon command fields */
iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
frame_size);
/* Set up packet rate and flags */
info = IEEE80211_SKB_CB(priv->beacon_skb);
/*
* Let's set up the rate at least somewhat correctly;
* it will currently not actually be used by the uCode,
* it uses the broadcast station's rate instead.
*/
if (info->control.rates[0].idx < 0 ||
info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
rate = 0;
else
rate = info->control.rates[0].idx;
priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
hw_params(priv).valid_tx_ant);
rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
/* In mac80211, rates for 5 GHz start at 0 */
if (info->band == IEEE80211_BAND_5GHZ)
rate += IWL_FIRST_OFDM_RATE;
else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
rate_flags |= RATE_MCS_CCK_MSK;
tx_beacon_cmd->tx.rate_n_flags =
iwl_hw_set_rate_n_flags(rate, rate_flags);
/* Submit command */
cmd.len[0] = sizeof(*tx_beacon_cmd);
cmd.data[0] = tx_beacon_cmd;
cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
cmd.len[1] = frame_size;
cmd.data[1] = priv->beacon_skb->data;
cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
return iwl_trans_send_cmd(trans(priv), &cmd);
}
static void iwl_bg_beacon_update(struct work_struct *work)
{
struct iwl_priv *priv =
container_of(work, struct iwl_priv, beacon_update);
struct sk_buff *beacon;
mutex_lock(&priv->shrd->mutex);
if (!priv->beacon_ctx) {
IWL_ERR(priv, "updating beacon w/o beacon context!\n");
goto out;
}
if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
/*
* The ucode will send beacon notifications even in
* IBSS mode, but we don't want to process them. But
* we need to defer the type check to here due to
* requiring locking around the beacon_ctx access.
*/
goto out;
}
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
if (!beacon) {
IWL_ERR(priv, "update beacon failed -- keeping old\n");
goto out;
}
/* new beacon skb is allocated every time; dispose previous.*/
dev_kfree_skb(priv->beacon_skb);
priv->beacon_skb = beacon;
iwlagn_send_beacon_cmd(priv);
out:
mutex_unlock(&priv->shrd->mutex);
}
static void iwl_bg_bt_runtime_config(struct work_struct *work)
{
struct iwl_priv *priv =
container_of(work, struct iwl_priv, bt_runtime_config);
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
return;
/* dont send host command if rf-kill is on */
if (!iwl_is_ready_rf(priv->shrd))
return;
iwlagn_send_advance_bt_config(priv);
}
static void iwl_bg_bt_full_concurrency(struct work_struct *work)
{
struct iwl_priv *priv =
container_of(work, struct iwl_priv, bt_full_concurrency);
struct iwl_rxon_context *ctx;
mutex_lock(&priv->shrd->mutex);
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
goto out;
/* dont send host command if rf-kill is on */
if (!iwl_is_ready_rf(priv->shrd))
goto out;
IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
priv->bt_full_concurrent ?
"full concurrency" : "3-wire");
/*
* LQ & RXON updated cmds must be sent before BT Config cmd
* to avoid 3-wire collisions
*/
for_each_context(priv, ctx) {
iwlagn_set_rxon_chain(priv, ctx);
iwlagn_commit_rxon(priv, ctx);
}
iwlagn_send_advance_bt_config(priv);
out:
mutex_unlock(&priv->shrd->mutex);
}
/**
* iwl_bg_statistics_periodic - Timer callback to queue statistics
*
* This callback is provided in order to send a statistics request.
*
* This timer function is continually reset to execute within
* REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
* was received. We need to ensure we receive the statistics in order
* to update the temperature used for calibrating the TXPOWER.
*/
static void iwl_bg_statistics_periodic(unsigned long data)
{
struct iwl_priv *priv = (struct iwl_priv *)data;
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
return;
/* dont send host command if rf-kill is on */
if (!iwl_is_ready_rf(priv->shrd))
return;
iwl_send_statistics_request(priv, CMD_ASYNC, false);
}
static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
u32 start_idx, u32 num_events,
u32 capacity, u32 mode)
{
u32 i;
u32 ptr; /* SRAM byte address of log data */
u32 ev, time, data; /* event log data */
unsigned long reg_flags;
if (mode == 0)
ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
else
ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
/* Make sure device is powered up for SRAM reads */
spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
if (iwl_grab_nic_access(trans(priv))) {
spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
return;
}
/* Set starting address; reads will auto-increment */
iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
rmb();
/*
* Refuse to read more than would have fit into the log from
* the current start_idx. This used to happen due to the race
* described below, but now WARN because the code below should
* prevent it from happening here.
*/
if (WARN_ON(num_events > capacity - start_idx))
num_events = capacity - start_idx;
/*
* "time" is actually "data" for mode 0 (no timestamp).
* place event id # at far right for easier visual parsing.
*/
for (i = 0; i < num_events; i++) {
ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
if (mode == 0) {
trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev);
} else {
data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
trace_iwlwifi_dev_ucode_cont_event(priv, time,
data, ev);
}
}
/* Allow device to power down */
iwl_release_nic_access(trans(priv));
spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
}
static void iwl_continuous_event_trace(struct iwl_priv *priv)
{
u32 capacity; /* event log capacity in # entries */
struct {
u32 capacity;
u32 mode;
u32 wrap_counter;
u32 write_counter;
} __packed read;
u32 base; /* SRAM byte address of event log header */
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
u32 num_wraps; /* # times uCode wrapped to top of log */
u32 next_entry; /* index of next entry to be written by uCode */
base = priv->shrd->device_pointers.log_event_table;
if (iwlagn_hw_valid_rtc_data_addr(base)) {
iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
capacity = read.capacity;
mode = read.mode;
num_wraps = read.wrap_counter;
next_entry = read.write_counter;
} else
return;
/*
* Unfortunately, the uCode doesn't use temporary variables.
* Therefore, it can happen that we read next_entry == capacity,
* which really means next_entry == 0.
*/
if (unlikely(next_entry == capacity))
next_entry = 0;
/*
* Additionally, the uCode increases the write pointer before
* the wraps counter, so if the write pointer is smaller than
* the old write pointer (wrap occurred) but we read that no
* wrap occurred, we actually read between the next_entry and
* num_wraps update (this does happen in practice!!) -- take
* that into account by increasing num_wraps.
*/
if (unlikely(next_entry < priv->event_log.next_entry &&
num_wraps == priv->event_log.num_wraps))
num_wraps++;
if (num_wraps == priv->event_log.num_wraps) {
iwl_print_cont_event_trace(
priv, base, priv->event_log.next_entry,
next_entry - priv->event_log.next_entry,
capacity, mode);
priv->event_log.non_wraps_count++;
} else {
if (num_wraps - priv->event_log.num_wraps > 1)
priv->event_log.wraps_more_count++;
else
priv->event_log.wraps_once_count++;
trace_iwlwifi_dev_ucode_wrap_event(priv,
num_wraps - priv->event_log.num_wraps,
next_entry, priv->event_log.next_entry);
if (next_entry < priv->event_log.next_entry) {
iwl_print_cont_event_trace(
priv, base, priv->event_log.next_entry,
capacity - priv->event_log.next_entry,
capacity, mode);
iwl_print_cont_event_trace(
priv, base, 0, next_entry, capacity, mode);
} else {
iwl_print_cont_event_trace(
priv, base, next_entry,
capacity - next_entry,
capacity, mode);
iwl_print_cont_event_trace(
priv, base, 0, next_entry, capacity, mode);
}
}
priv->event_log.num_wraps = num_wraps;
priv->event_log.next_entry = next_entry;
}
/**
* iwl_bg_ucode_trace - Timer callback to log ucode event
*
* The timer is continually set to execute every
* UCODE_TRACE_PERIOD milliseconds after the last timer expired
* this function is to perform continuous uCode event logging operation
* if enabled
*/
static void iwl_bg_ucode_trace(unsigned long data)
{
struct iwl_priv *priv = (struct iwl_priv *)data;
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
return;
if (priv->event_log.ucode_trace) {
iwl_continuous_event_trace(priv);
/* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
mod_timer(&priv->ucode_trace,
jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
}
}
static void iwl_bg_tx_flush(struct work_struct *work)
{
struct iwl_priv *priv =
container_of(work, struct iwl_priv, tx_flush);
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
return;
/* do nothing if rf-kill is on */
if (!iwl_is_ready_rf(priv->shrd))
return;
IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
}
void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
{
int i;
/*
* The default context is always valid,
* the PAN context depends on uCode.
*/
priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
for (i = 0; i < NUM_IWL_RXON_CTX; i++)
priv->contexts[i].ctxid = i;
priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
BIT(NL80211_IFTYPE_ADHOC);
priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
BIT(NL80211_IFTYPE_STATION);
priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
REPLY_WIPAN_RXON_TIMING;
priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
REPLY_WIPAN_RXON_ASSOC;
priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO);
priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
}
static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
struct iwl_ct_kill_config cmd;
struct iwl_ct_kill_throttling_config adv_cmd;
int ret = 0;
iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
priv->thermal_throttle.ct_kill_toggle = false;
if (cfg(priv)->base_params->support_ct_kill_exit) {
adv_cmd.critical_temperature_enter =
cpu_to_le32(hw_params(priv).ct_kill_threshold);
adv_cmd.critical_temperature_exit =
cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
ret = iwl_trans_send_cmd_pdu(trans(priv),
REPLY_CT_KILL_CONFIG_CMD,
CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
if (ret)
IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
else
IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
"succeeded, critical temperature enter is %d,"
"exit is %d\n",
hw_params(priv).ct_kill_threshold,
hw_params(priv).ct_kill_exit_threshold);
} else {
cmd.critical_temperature_R =
cpu_to_le32(hw_params(priv).ct_kill_threshold);
ret = iwl_trans_send_cmd_pdu(trans(priv),
REPLY_CT_KILL_CONFIG_CMD,
CMD_SYNC, sizeof(cmd), &cmd);
if (ret)
IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
else
IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
"succeeded, "
"critical temperature is %d\n",
hw_params(priv).ct_kill_threshold);
}
}
static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
{
struct iwl_calib_cfg_cmd calib_cfg_cmd;
struct iwl_host_cmd cmd = {
.id = CALIBRATION_CFG_CMD,
.len = { sizeof(struct iwl_calib_cfg_cmd), },
.data = { &calib_cfg_cmd, },
};
memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
return iwl_trans_send_cmd(trans(priv), &cmd);
}
static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
{
struct iwl_tx_ant_config_cmd tx_ant_cmd = {
.valid = cpu_to_le32(valid_tx_ant),
};
if (IWL_UCODE_API(nic(priv)->fw.ucode_ver) > 1) {
IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
return iwl_trans_send_cmd_pdu(trans(priv),
TX_ANT_CONFIGURATION_CMD,
CMD_SYNC,
sizeof(struct iwl_tx_ant_config_cmd),
&tx_ant_cmd);
} else {
IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
return -EOPNOTSUPP;
}
}
/**
* iwl_alive_start - called after REPLY_ALIVE notification received
* from protocol/runtime uCode (initialization uCode's
* Alive gets handled by iwl_init_alive_start()).
*/
int iwl_alive_start(struct iwl_priv *priv)
{
int ret = 0;
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
/* After the ALIVE response, we can send host commands to the uCode */
set_bit(STATUS_ALIVE, &priv->shrd->status);
/* Enable watchdog to monitor the driver tx queues */
iwl_setup_watchdog(priv);
if (iwl_is_rfkill(priv->shrd))
return -ERFKILL;
if (priv->event_log.ucode_trace) {
/* start collecting data now */
mod_timer(&priv->ucode_trace, jiffies);
}
/* download priority table before any calibration request */
if (cfg(priv)->bt_params &&
cfg(priv)->bt_params->advanced_bt_coexist) {
/* Configure Bluetooth device coexistence support */
if (cfg(priv)->bt_params->bt_sco_disable)
priv->bt_enable_pspoll = false;
else
priv->bt_enable_pspoll = true;
priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
iwlagn_send_advance_bt_config(priv);
priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
priv->cur_rssi_ctx = NULL;
iwl_send_prio_tbl(trans(priv));
/* FIXME: w/a to force change uCode BT state machine */
ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
if (ret)
return ret;
ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
if (ret)
return ret;
} else {
/*
* default is 2-wire BT coexexistence support
*/
iwl_send_bt_config(priv);
}
/*
* Perform runtime calibrations, including DC calibration.
*/
iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
ieee80211_wake_queues(priv->hw);
priv->active_rate = IWL_RATES_MASK;
/* Configure Tx antenna selection based on H/W config */
iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
struct iwl_rxon_cmd *active_rxon =
(struct iwl_rxon_cmd *)&ctx->active;
/* apply any changes in staging */
ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
} else {
struct iwl_rxon_context *tmp;
/* Initialize our rx_config data */
for_each_context(priv, tmp)
iwl_connection_init_rx_config(priv, tmp);
iwlagn_set_rxon_chain(priv, ctx);
}
if (!priv->shrd->wowlan) {
/* WoWLAN ucode will not reply in the same way, skip it */
iwl_reset_run_time_calib(priv);
}
set_bit(STATUS_READY, &priv->shrd->status);
/* Configure the adapter for unassociated operation */
ret = iwlagn_commit_rxon(priv, ctx);
if (ret)
return ret;
/* At this point, the NIC is initialized and operational */
iwl_rf_kill_ct_config(priv);
IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
return iwl_power_update_mode(priv, true);
}
/**
* iwl_clear_driver_stations - clear knowledge of all stations from driver
* @priv: iwl priv struct
*
* This is called during iwl_down() to make sure that in the case
* we're coming there from a hardware restart mac80211 will be
* able to reconfigure stations -- if we're getting there in the
* normal down flow then the stations will already be cleared.
*/
static void iwl_clear_driver_stations(struct iwl_priv *priv)
{
struct iwl_rxon_context *ctx;
spin_lock_bh(&priv->sta_lock);
memset(priv->stations, 0, sizeof(priv->stations));
priv->num_stations = 0;
priv->ucode_key_table = 0;
for_each_context(priv, ctx) {
/*
* Remove all key information that is not stored as part
* of station information since mac80211 may not have had
* a chance to remove all the keys. When device is
* reconfigured by mac80211 after an error all keys will
* be reconfigured.
*/
memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
ctx->key_mapping_keys = 0;
}
spin_unlock_bh(&priv->sta_lock);
}
void iwl_down(struct iwl_priv *priv)
{
int exit_pending;
IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
lockdep_assert_held(&priv->shrd->mutex);
iwl_scan_cancel_timeout(priv, 200);
/*
* If active, scanning won't cancel it, so say it expired.
* No race since we hold the mutex here and a new one
* can't come in at this time.
*/
ieee80211_remain_on_channel_expired(priv->hw);
exit_pending =
test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
/* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
* to prevent rearm timer */
del_timer_sync(&priv->watchdog);
iwl_clear_ucode_stations(priv, NULL);
iwl_dealloc_bcast_stations(priv);
iwl_clear_driver_stations(priv);
/* reset BT coex data */
priv->bt_status = 0;
priv->cur_rssi_ctx = NULL;
priv->bt_is_sco = 0;
if (cfg(priv)->bt_params)
priv->bt_traffic_load =
cfg(priv)->bt_params->bt_init_traffic_load;
else
priv->bt_traffic_load = 0;
priv->bt_full_concurrent = false;
priv->bt_ci_compliance = 0;
/* Wipe out the EXIT_PENDING status bit if we are not actually
* exiting the module */
if (!exit_pending)
clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
if (priv->mac80211_registered)
ieee80211_stop_queues(priv->hw);
iwl_trans_stop_device(trans(priv));
/* Clear out all status bits but a few that are stable across reset */
priv->shrd->status &=
test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
STATUS_RF_KILL_HW |
test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
STATUS_GEO_CONFIGURED |
test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
STATUS_FW_ERROR |
test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
STATUS_EXIT_PENDING;
dev_kfree_skb(priv->beacon_skb);
priv->beacon_skb = NULL;
}
/*****************************************************************************
*
* Workqueue callbacks
*
*****************************************************************************/
static void iwl_bg_run_time_calib_work(struct work_struct *work)
{
struct iwl_priv *priv = container_of(work, struct iwl_priv,
run_time_calib_work);
mutex_lock(&priv->shrd->mutex);
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
test_bit(STATUS_SCANNING, &priv->shrd->status)) {
mutex_unlock(&priv->shrd->mutex);
return;
}
if (priv->start_calib) {
iwl_chain_noise_calibration(priv);
iwl_sensitivity_calibration(priv);
}
mutex_unlock(&priv->shrd->mutex);
}
void iwlagn_prepare_restart(struct iwl_priv *priv)
{
struct iwl_rxon_context *ctx;
bool bt_full_concurrent;
u8 bt_ci_compliance;
u8 bt_load;
u8 bt_status;
bool bt_is_sco;
lockdep_assert_held(&priv->shrd->mutex);
for_each_context(priv, ctx)
ctx->vif = NULL;
priv->is_open = 0;
/*
* __iwl_down() will clear the BT status variables,
* which is correct, but when we restart we really
* want to keep them so restore them afterwards.
*
* The restart process will later pick them up and
* re-configure the hw when we reconfigure the BT
* command.
*/
bt_full_concurrent = priv->bt_full_concurrent;
bt_ci_compliance = priv->bt_ci_compliance;
bt_load = priv->bt_traffic_load;
bt_status = priv->bt_status;
bt_is_sco = priv->bt_is_sco;
iwl_down(priv);
priv->bt_full_concurrent = bt_full_concurrent;
priv->bt_ci_compliance = bt_ci_compliance;
priv->bt_traffic_load = bt_load;
priv->bt_status = bt_status;
priv->bt_is_sco = bt_is_sco;
}
static void iwl_bg_restart(struct work_struct *data)
{
struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
return;
if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
mutex_lock(&priv->shrd->mutex);
iwlagn_prepare_restart(priv);
mutex_unlock(&priv->shrd->mutex);
iwl_cancel_deferred_work(priv);
ieee80211_restart_hw(priv->hw);
} else {
WARN_ON(1);
}
}
void iwlagn_disable_roc(struct iwl_priv *priv)
{
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
lockdep_assert_held(&priv->shrd->mutex);
if (!priv->hw_roc_setup)
return;
ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
priv->hw_roc_channel = NULL;
memset(ctx->staging.node_addr, 0, ETH_ALEN);
iwlagn_commit_rxon(priv, ctx);
ctx->is_active = false;
priv->hw_roc_setup = false;
}
static void iwlagn_disable_roc_work(struct work_struct *work)
{
struct iwl_priv *priv = container_of(work, struct iwl_priv,
hw_roc_disable_work.work);
mutex_lock(&priv->shrd->mutex);
iwlagn_disable_roc(priv);
mutex_unlock(&priv->shrd->mutex);
}
/*****************************************************************************
*
* driver setup and teardown
*
*****************************************************************************/
static void iwl_setup_deferred_work(struct iwl_priv *priv)
{
priv->workqueue = create_singlethread_workqueue(DRV_NAME);
init_waitqueue_head(&priv->shrd->wait_command_queue);
INIT_WORK(&priv->restart, iwl_bg_restart);
INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
iwlagn_disable_roc_work);
iwl_setup_scan_deferred_work(priv);
if (cfg(priv)->lib->bt_setup_deferred_work)
cfg(priv)->lib->bt_setup_deferred_work(priv);
init_timer(&priv->statistics_periodic);
priv->statistics_periodic.data = (unsigned long)priv;
priv->statistics_periodic.function = iwl_bg_statistics_periodic;
init_timer(&priv->ucode_trace);
priv->ucode_trace.data = (unsigned long)priv;
priv->ucode_trace.function = iwl_bg_ucode_trace;
init_timer(&priv->watchdog);
priv->watchdog.data = (unsigned long)priv;
priv->watchdog.function = iwl_bg_watchdog;
}
void iwl_cancel_deferred_work(struct iwl_priv *priv)
{
if (cfg(priv)->lib->cancel_deferred_work)
cfg(priv)->lib->cancel_deferred_work(priv);
cancel_work_sync(&priv->run_time_calib_work);
cancel_work_sync(&priv->beacon_update);
iwl_cancel_scan_deferred_work(priv);
cancel_work_sync(&priv->bt_full_concurrency);
cancel_work_sync(&priv->bt_runtime_config);
cancel_delayed_work_sync(&priv->hw_roc_disable_work);
del_timer_sync(&priv->statistics_periodic);
del_timer_sync(&priv->ucode_trace);
}
static void iwl_init_hw_rates(struct iwl_priv *priv,
struct ieee80211_rate *rates)
{
int i;
for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
rates[i].bitrate = iwl_rates[i].ieee * 5;
rates[i].hw_value = i; /* Rate scaling will work on indexes */
rates[i].hw_value_short = i;
rates[i].flags = 0;
if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
/*
* If CCK != 1M then set short preamble rate flag.
*/
rates[i].flags |=
(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
0 : IEEE80211_RATE_SHORT_PREAMBLE;
}
}
}
static int iwl_init_drv(struct iwl_priv *priv)
{
int ret;
spin_lock_init(&priv->sta_lock);
mutex_init(&priv->shrd->mutex);
INIT_LIST_HEAD(&trans(priv)->calib_results);
priv->ieee_channels = NULL;
priv->ieee_rates = NULL;
priv->band = IEEE80211_BAND_2GHZ;
priv->iw_mode = NL80211_IFTYPE_STATION;
priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
priv->agg_tids_count = 0;
/* initialize force reset */
priv->force_reset[IWL_RF_RESET].reset_duration =
IWL_DELAY_NEXT_FORCE_RF_RESET;
priv->force_reset[IWL_FW_RESET].reset_duration =
IWL_DELAY_NEXT_FORCE_FW_RELOAD;
priv->rx_statistics_jiffies = jiffies;
/* Choose which receivers/antennas to use */
iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
iwl_init_scan_params(priv);
/* init bt coex */
if (cfg(priv)->bt_params &&
cfg(priv)->bt_params->advanced_bt_coexist) {
priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
priv->bt_duration = BT_DURATION_LIMIT_DEF;
priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
}
ret = iwl_init_channel_map(priv);
if (ret) {
IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
goto err;
}
ret = iwl_init_geos(priv);
if (ret) {
IWL_ERR(priv, "initializing geos failed: %d\n", ret);
goto err_free_channel_map;
}
iwl_init_hw_rates(priv, priv->ieee_rates);
return 0;
err_free_channel_map:
iwl_free_channel_map(priv);
err:
return ret;
}
static void iwl_uninit_drv(struct iwl_priv *priv)
{
iwl_free_geos(priv);
iwl_free_channel_map(priv);
if (priv->tx_cmd_pool)
kmem_cache_destroy(priv->tx_cmd_pool);
kfree(priv->scan_cmd);
kfree(priv->beacon_cmd);
kfree(rcu_dereference_raw(priv->noa_data));
#ifdef CONFIG_IWLWIFI_DEBUGFS
kfree(priv->wowlan_sram);
#endif
}
/* Size of one Rx buffer in host DRAM */
#define IWL_RX_BUF_SIZE_4K (4 * 1024)
#define IWL_RX_BUF_SIZE_8K (8 * 1024)
static void iwl_set_hw_params(struct iwl_priv *priv)
{
if (iwlagn_mod_params.amsdu_size_8K)
hw_params(priv).rx_page_order =
get_order(IWL_RX_BUF_SIZE_8K);
else
hw_params(priv).rx_page_order =
get_order(IWL_RX_BUF_SIZE_4K);
if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
hw_params(priv).num_ampdu_queues =
cfg(priv)->base_params->num_of_ampdu_queues;
hw_params(priv).shadow_reg_enable =
cfg(priv)->base_params->shadow_reg_enable;
hw_params(priv).sku = cfg(priv)->sku;
hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
/* Device-specific setup */
cfg(priv)->lib->set_hw_params(priv);
}
static void iwl_debug_config(struct iwl_priv *priv)
{
dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
#ifdef CONFIG_IWLWIFI_DEBUG
"enabled\n");
#else
"disabled\n");
#endif
dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
#ifdef CONFIG_IWLWIFI_DEBUGFS
"enabled\n");
#else
"disabled\n");
#endif
dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
"enabled\n");
#else
"disabled\n");
#endif
dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
"enabled\n");
#else
"disabled\n");
#endif
dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
#ifdef CONFIG_IWLWIFI_P2P
"enabled\n");
#else
"disabled\n");
#endif
}
static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans)
{
struct iwl_fw *fw = &nic(trans)->fw;
int err = 0;
struct iwl_priv *priv;
struct ieee80211_hw *hw;
struct iwl_op_mode *op_mode;
u16 num_mac;
u32 ucode_flags;
/************************
* 1. Allocating HW data
************************/
hw = iwl_alloc_all();
if (!hw) {
pr_err("%s: Cannot allocate network device\n",
cfg(trans)->name);
err = -ENOMEM;
goto out;
}
op_mode = hw->priv;
op_mode->ops = &iwl_dvm_ops;
priv = IWL_OP_MODE_GET_DVM(op_mode);
priv->shrd = trans->shrd;
priv->shrd->priv = priv;
iwl_trans_configure(trans(priv), op_mode);
/* At this point both hw and priv are allocated. */
SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
/* show what debugging capabilities we have */
iwl_debug_config(priv);
IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
/* is antenna coupling more than 35dB ? */
priv->bt_ant_couple_ok =
(iwlagn_mod_params.ant_coupling >
IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
true : false;
/* enable/disable bt channel inhibition */
priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
(priv->bt_ch_announce) ? "On" : "Off");
if (iwl_alloc_traffic_mem(priv))
IWL_ERR(priv, "Not enough memory to generate traffic log\n");
/* these spin locks will be used in apm_ops.init and EEPROM access
* we should init now
*/
spin_lock_init(&trans(priv)->reg_lock);
spin_lock_init(&priv->statistics.lock);
/***********************
* 3. Read REV register
***********************/
IWL_INFO(priv, "Detected %s, REV=0x%X\n",
cfg(priv)->name, trans(priv)->hw_rev);
err = iwl_trans_start_hw(trans(priv));
if (err)
goto out_free_traffic_mem;
/*****************
* 4. Read EEPROM
*****************/
/* Read the EEPROM */
err = iwl_eeprom_init(trans(priv), trans(priv)->hw_rev);
/* Reset chip to save power until we load uCode during "up". */
iwl_trans_stop_hw(trans(priv));
if (err) {
IWL_ERR(priv, "Unable to init EEPROM\n");
goto out_free_traffic_mem;
}
err = iwl_eeprom_check_version(priv);
if (err)
goto out_free_eeprom;
err = iwl_eeprom_check_sku(priv);
if (err)
goto out_free_eeprom;
/* extract MAC Address */
iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
priv->hw->wiphy->addresses = priv->addresses;
priv->hw->wiphy->n_addresses = 1;
num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
if (num_mac > 1) {
memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
ETH_ALEN);
priv->addresses[1].addr[5]++;
priv->hw->wiphy->n_addresses++;
}
/************************
* 5. Setup HW constants
************************/
iwl_set_hw_params(priv);
ucode_flags = fw->ucode_capa.flags;
#ifndef CONFIG_IWLWIFI_P2P
ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
#endif
if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE))
ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
/*
* if not PAN, then don't support P2P -- might be a uCode
* packaging bug or due to the eeprom check above
*/
if (!(ucode_flags & IWL_UCODE_TLV_FLAGS_PAN))
ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
/*******************
* 6. Setup priv
*******************/
err = iwl_init_drv(priv);
if (err)
goto out_free_eeprom;
/* At this point both hw and priv are initialized. */
/********************
* 7. Setup services
********************/
iwl_setup_deferred_work(priv);
iwl_setup_rx_handlers(priv);
iwl_testmode_init(priv);
iwl_power_initialize(priv);
iwl_tt_initialize(priv);
snprintf(priv->hw->wiphy->fw_version,
sizeof(priv->hw->wiphy->fw_version),
"%s", fw->fw_version);
priv->new_scan_threshold_behaviour =
!!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
} else {
priv->sta_key_max_num = STA_KEY_MAX_NUM;
priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
}
priv->phy_calib_chain_noise_reset_cmd =
fw->ucode_capa.standard_phy_calibration_size;
priv->phy_calib_chain_noise_gain_cmd =
fw->ucode_capa.standard_phy_calibration_size + 1;
/* initialize all valid contexts */
iwl_init_context(priv, ucode_flags);
/**************************************************
* This is still part of probe() in a sense...
*
* 9. Setup and register with mac80211 and debugfs
**************************************************/
err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
if (err)
goto out_destroy_workqueue;
err = iwl_dbgfs_register(priv, DRV_NAME);
if (err)
IWL_ERR(priv,
"failed to create debugfs files. Ignoring error: %d\n",
err);
return op_mode;
out_destroy_workqueue:
destroy_workqueue(priv->workqueue);
priv->workqueue = NULL;
iwl_uninit_drv(priv);
out_free_eeprom:
iwl_eeprom_free(priv->shrd);
out_free_traffic_mem:
iwl_free_traffic_mem(priv);
ieee80211_free_hw(priv->hw);
out:
op_mode = NULL;
return op_mode;
}
static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
{
struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
wait_for_completion(&nic(priv)->request_firmware_complete);
IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
iwl_dbgfs_unregister(priv);
iwl_testmode_cleanup(priv);
iwlagn_mac_unregister(priv);
iwl_tt_exit(priv);
/*This will stop the queues, move the device to low power state */
iwl_trans_stop_device(trans(priv));
iwl_dealloc_ucode(nic(priv));
iwl_eeprom_free(priv->shrd);
/*netif_stop_queue(dev); */
flush_workqueue(priv->workqueue);
/* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
* priv->workqueue... so we can't take down the workqueue
* until now... */
destroy_workqueue(priv->workqueue);
priv->workqueue = NULL;
iwl_free_traffic_mem(priv);
iwl_uninit_drv(priv);
dev_kfree_skb(priv->beacon_skb);
ieee80211_free_hw(priv->hw);
}
const struct iwl_op_mode_ops iwl_dvm_ops = {
.start = iwl_op_mode_dvm_start,
.stop = iwl_op_mode_dvm_stop,
.rx = iwl_rx_dispatch,
.queue_full = iwl_stop_sw_queue,
.queue_not_full = iwl_wake_sw_queue,
.hw_rf_kill = iwl_set_hw_rfkill_state,
.free_skb = iwl_free_skb,
.nic_error = iwl_nic_error,
};
/*****************************************************************************
*
* driver and module entry point
*
*****************************************************************************/
static int __init iwl_init(void)
{
int ret;
pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
pr_info(DRV_COPYRIGHT "\n");
ret = iwlagn_rate_control_register();
if (ret) {
pr_err("Unable to register rate control algorithm: %d\n", ret);
return ret;
}
ret = iwl_pci_register_driver();
if (ret)
goto error_register;
return ret;
error_register:
iwlagn_rate_control_unregister();
return ret;
}
static void __exit iwl_exit(void)
{
iwl_pci_unregister_driver();
iwlagn_rate_control_unregister();
}
module_exit(iwl_exit);
module_init(iwl_init);
#ifdef CONFIG_IWLWIFI_DEBUG
module_param_named(debug, iwlagn_mod_params.debug_level, uint,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "debug output mask");
#endif
module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
MODULE_PARM_DESC(queues_num, "number of hw queues.");
module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
MODULE_PARM_DESC(11n_disable,
"disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
int, S_IRUGO);
MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
module_param_named(ucode_alternative,
iwlagn_mod_params.wanted_ucode_alternative,
int, S_IRUGO);
MODULE_PARM_DESC(ucode_alternative,
"specify ucode alternative to use from ucode file");
module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
int, S_IRUGO);
MODULE_PARM_DESC(antenna_coupling,
"specify antenna coupling in dB (defualt: 0 dB)");
module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
bool, S_IRUGO);
MODULE_PARM_DESC(bt_ch_inhibition,
"Enable BT channel inhibition (default: enable)");
module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
MODULE_PARM_DESC(wd_disable,
"Disable stuck queue watchdog timer 0=system default, "
"1=disable, 2=enable (default: 0)");
/*
* set bt_coex_active to true, uCode will do kill/defer
* every time the priority line is asserted (BT is sending signals on the
* priority line in the PCIx).
* set bt_coex_active to false, uCode will ignore the BT activity and
* perform the normal operation
*
* User might experience transmit issue on some platform due to WiFi/BT
* co-exist problem. The possible behaviors are:
* Able to scan and finding all the available AP
* Not able to associate with any AP
* On those platforms, WiFi communication can be restored by set
* "bt_coex_active" module parameter to "false"
*
* default: bt_coex_active = true (BT_COEX_ENABLE)
*/
module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
bool, S_IRUGO);
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
MODULE_PARM_DESC(led_mode, "0=system default, "
"1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
module_param_named(power_save, iwlagn_mod_params.power_save,
bool, S_IRUGO);
MODULE_PARM_DESC(power_save,
"enable WiFi power management (default: disable)");
module_param_named(power_level, iwlagn_mod_params.power_level,
int, S_IRUGO);
MODULE_PARM_DESC(power_level,
"default power save level (range from 1 - 5, default: 1)");
module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
bool, S_IRUGO);
MODULE_PARM_DESC(auto_agg,
"enable agg w/o check traffic load (default: enable)");
/*
* For now, keep using power level 1 instead of automatically
* adjusting ...
*/
module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
bool, S_IRUGO);
MODULE_PARM_DESC(no_sleep_autoadjust,
"don't automatically adjust sleep level "
"according to maximum network latency (default: true)");
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