obj-$(CONFIG_IWLEGACY) += iwl-legacy.o
-iwl-legacy-objs := iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o
+iwl-legacy-objs := common.o iwl-eeprom.o iwl-hcmd.o iwl-power.o
iwl-legacy-objs += iwl-rx.o iwl-tx.o iwl-sta.o
iwl-legacy-objs += iwl-scan.o iwl-led.o
iwl-legacy-$(CONFIG_IWLEGACY_DEBUGFS) += iwl-debugfs.o
--- /dev/null
+/******************************************************************************
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * 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.GPL.
+ *
+ * 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/etherdevice.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <net/mac80211.h>
+
+#include "iwl-eeprom.h"
+#include "iwl-dev.h"
+#include "iwl-debug.h"
+#include "iwl-core.h"
+#include "iwl-io.h"
+#include "iwl-power.h"
+#include "iwl-sta.h"
+#include "iwl-helpers.h"
+
+
+MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
+MODULE_VERSION(IWLWIFI_VERSION);
+MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
+MODULE_LICENSE("GPL");
+
+/*
+ * 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)
+ */
+static bool bt_coex_active = true;
+module_param(bt_coex_active, bool, S_IRUGO);
+MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
+
+u32 il_debug_level;
+EXPORT_SYMBOL(il_debug_level);
+
+const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+EXPORT_SYMBOL(il_bcast_addr);
+
+
+/* This function both allocates and initializes hw and il. */
+struct ieee80211_hw *il_alloc_all(struct il_cfg *cfg)
+{
+ struct il_priv *il;
+ /* mac80211 allocates memory for this device instance, including
+ * space for this driver's ilate structure */
+ struct ieee80211_hw *hw;
+
+ hw = ieee80211_alloc_hw(sizeof(struct il_priv),
+ cfg->ops->ieee80211_ops);
+ if (hw == NULL) {
+ pr_err("%s: Can not allocate network device\n",
+ cfg->name);
+ goto out;
+ }
+
+ il = hw->priv;
+ il->hw = hw;
+
+out:
+ return hw;
+}
+EXPORT_SYMBOL(il_alloc_all);
+
+#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
+#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
+static void il_init_ht_hw_capab(const struct il_priv *il,
+ struct ieee80211_sta_ht_cap *ht_info,
+ enum ieee80211_band band)
+{
+ u16 max_bit_rate = 0;
+ u8 rx_chains_num = il->hw_params.rx_chains_num;
+ u8 tx_chains_num = il->hw_params.tx_chains_num;
+
+ ht_info->cap = 0;
+ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
+
+ ht_info->ht_supported = true;
+
+ ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
+ max_bit_rate = MAX_BIT_RATE_20_MHZ;
+ if (il->hw_params.ht40_channel & BIT(band)) {
+ ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
+ ht_info->mcs.rx_mask[4] = 0x01;
+ max_bit_rate = MAX_BIT_RATE_40_MHZ;
+ }
+
+ if (il->cfg->mod_params->amsdu_size_8K)
+ ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
+
+ ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
+ ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
+
+ ht_info->mcs.rx_mask[0] = 0xFF;
+ if (rx_chains_num >= 2)
+ ht_info->mcs.rx_mask[1] = 0xFF;
+ if (rx_chains_num >= 3)
+ ht_info->mcs.rx_mask[2] = 0xFF;
+
+ /* Highest supported Rx data rate */
+ max_bit_rate *= rx_chains_num;
+ WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
+ ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
+
+ /* Tx MCS capabilities */
+ ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
+ if (tx_chains_num != rx_chains_num) {
+ ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
+ ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
+ IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
+ }
+}
+
+/**
+ * il_init_geos - Initialize mac80211's geo/channel info based from eeprom
+ */
+int il_init_geos(struct il_priv *il)
+{
+ struct il_channel_info *ch;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_channel *channels;
+ struct ieee80211_channel *geo_ch;
+ struct ieee80211_rate *rates;
+ int i = 0;
+ s8 max_tx_power = 0;
+
+ if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
+ il->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
+ D_INFO("Geography modes already initialized.\n");
+ set_bit(S_GEO_CONFIGURED, &il->status);
+ return 0;
+ }
+
+ channels = kzalloc(sizeof(struct ieee80211_channel) *
+ il->channel_count, GFP_KERNEL);
+ if (!channels)
+ return -ENOMEM;
+
+ rates = kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY),
+ GFP_KERNEL);
+ if (!rates) {
+ kfree(channels);
+ return -ENOMEM;
+ }
+
+ /* 5.2GHz channels start after the 2.4GHz channels */
+ sband = &il->bands[IEEE80211_BAND_5GHZ];
+ sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)];
+ /* just OFDM */
+ sband->bitrates = &rates[IL_FIRST_OFDM_RATE];
+ sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE;
+
+ if (il->cfg->sku & IL_SKU_N)
+ il_init_ht_hw_capab(il, &sband->ht_cap,
+ IEEE80211_BAND_5GHZ);
+
+ sband = &il->bands[IEEE80211_BAND_2GHZ];
+ sband->channels = channels;
+ /* OFDM & CCK */
+ sband->bitrates = rates;
+ sband->n_bitrates = RATE_COUNT_LEGACY;
+
+ if (il->cfg->sku & IL_SKU_N)
+ il_init_ht_hw_capab(il, &sband->ht_cap,
+ IEEE80211_BAND_2GHZ);
+
+ il->ieee_channels = channels;
+ il->ieee_rates = rates;
+
+ for (i = 0; i < il->channel_count; i++) {
+ ch = &il->channel_info[i];
+
+ if (!il_is_channel_valid(ch))
+ continue;
+
+ sband = &il->bands[ch->band];
+
+ geo_ch = &sband->channels[sband->n_channels++];
+
+ geo_ch->center_freq =
+ ieee80211_channel_to_frequency(ch->channel, ch->band);
+ geo_ch->max_power = ch->max_power_avg;
+ geo_ch->max_antenna_gain = 0xff;
+ geo_ch->hw_value = ch->channel;
+
+ if (il_is_channel_valid(ch)) {
+ if (!(ch->flags & EEPROM_CHANNEL_IBSS))
+ geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
+
+ if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
+ geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
+
+ if (ch->flags & EEPROM_CHANNEL_RADAR)
+ geo_ch->flags |= IEEE80211_CHAN_RADAR;
+
+ geo_ch->flags |= ch->ht40_extension_channel;
+
+ if (ch->max_power_avg > max_tx_power)
+ max_tx_power = ch->max_power_avg;
+ } else {
+ geo_ch->flags |= IEEE80211_CHAN_DISABLED;
+ }
+
+ D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
+ ch->channel, geo_ch->center_freq,
+ il_is_channel_a_band(ch) ? "5.2" : "2.4",
+ geo_ch->flags & IEEE80211_CHAN_DISABLED ?
+ "restricted" : "valid",
+ geo_ch->flags);
+ }
+
+ il->tx_power_device_lmt = max_tx_power;
+ il->tx_power_user_lmt = max_tx_power;
+ il->tx_power_next = max_tx_power;
+
+ if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 &&
+ (il->cfg->sku & IL_SKU_A)) {
+ IL_INFO("Incorrectly detected BG card as ABG. "
+ "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
+ il->pci_dev->device,
+ il->pci_dev->subsystem_device);
+ il->cfg->sku &= ~IL_SKU_A;
+ }
+
+ IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n",
+ il->bands[IEEE80211_BAND_2GHZ].n_channels,
+ il->bands[IEEE80211_BAND_5GHZ].n_channels);
+
+ set_bit(S_GEO_CONFIGURED, &il->status);
+
+ return 0;
+}
+EXPORT_SYMBOL(il_init_geos);
+
+/*
+ * il_free_geos - undo allocations in il_init_geos
+ */
+void il_free_geos(struct il_priv *il)
+{
+ kfree(il->ieee_channels);
+ kfree(il->ieee_rates);
+ clear_bit(S_GEO_CONFIGURED, &il->status);
+}
+EXPORT_SYMBOL(il_free_geos);
+
+static bool il_is_channel_extension(struct il_priv *il,
+ enum ieee80211_band band,
+ u16 channel, u8 extension_chan_offset)
+{
+ const struct il_channel_info *ch_info;
+
+ ch_info = il_get_channel_info(il, band, channel);
+ if (!il_is_channel_valid(ch_info))
+ return false;
+
+ if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
+ return !(ch_info->ht40_extension_channel &
+ IEEE80211_CHAN_NO_HT40PLUS);
+ else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
+ return !(ch_info->ht40_extension_channel &
+ IEEE80211_CHAN_NO_HT40MINUS);
+
+ return false;
+}
+
+bool il_is_ht40_tx_allowed(struct il_priv *il,
+ struct il_rxon_context *ctx,
+ struct ieee80211_sta_ht_cap *ht_cap)
+{
+ if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
+ return false;
+
+ /*
+ * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
+ * the bit will not set if it is pure 40MHz case
+ */
+ if (ht_cap && !ht_cap->ht_supported)
+ return false;
+
+#ifdef CONFIG_IWLEGACY_DEBUGFS
+ if (il->disable_ht40)
+ return false;
+#endif
+
+ return il_is_channel_extension(il, il->band,
+ le16_to_cpu(ctx->staging.channel),
+ ctx->ht.extension_chan_offset);
+}
+EXPORT_SYMBOL(il_is_ht40_tx_allowed);
+
+static u16 il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
+{
+ u16 new_val;
+ u16 beacon_factor;
+
+ /*
+ * If mac80211 hasn't given us a beacon interval, program
+ * the default into the device.
+ */
+ if (!beacon_val)
+ return DEFAULT_BEACON_INTERVAL;
+
+ /*
+ * If the beacon interval we obtained from the peer
+ * is too large, we'll have to wake up more often
+ * (and in IBSS case, we'll beacon too much)
+ *
+ * For example, if max_beacon_val is 4096, and the
+ * requested beacon interval is 7000, we'll have to
+ * use 3500 to be able to wake up on the beacons.
+ *
+ * This could badly influence beacon detection stats.
+ */
+
+ beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
+ new_val = beacon_val / beacon_factor;
+
+ if (!new_val)
+ new_val = max_beacon_val;
+
+ return new_val;
+}
+
+int
+il_send_rxon_timing(struct il_priv *il, struct il_rxon_context *ctx)
+{
+ u64 tsf;
+ s32 interval_tm, rem;
+ struct ieee80211_conf *conf = NULL;
+ u16 beacon_int;
+ struct ieee80211_vif *vif = ctx->vif;
+
+ conf = il_ieee80211_get_hw_conf(il->hw);
+
+ lockdep_assert_held(&il->mutex);
+
+ memset(&ctx->timing, 0, sizeof(struct il_rxon_time_cmd));
+
+ ctx->timing.timestamp = cpu_to_le64(il->timestamp);
+ ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
+
+ beacon_int = vif ? vif->bss_conf.beacon_int : 0;
+
+ /*
+ * TODO: For IBSS we need to get atim_win from mac80211,
+ * for now just always use 0
+ */
+ ctx->timing.atim_win = 0;
+
+ beacon_int = il_adjust_beacon_interval(beacon_int,
+ il->hw_params.max_beacon_itrvl * TIME_UNIT);
+ ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
+
+ tsf = il->timestamp; /* tsf is modifed by do_div: copy it */
+ interval_tm = beacon_int * TIME_UNIT;
+ rem = do_div(tsf, interval_tm);
+ ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
+
+ ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
+
+ D_ASSOC(
+ "beacon interval %d beacon timer %d beacon tim %d\n",
+ le16_to_cpu(ctx->timing.beacon_interval),
+ le32_to_cpu(ctx->timing.beacon_init_val),
+ le16_to_cpu(ctx->timing.atim_win));
+
+ return il_send_cmd_pdu(il, ctx->rxon_timing_cmd,
+ sizeof(ctx->timing), &ctx->timing);
+}
+EXPORT_SYMBOL(il_send_rxon_timing);
+
+void
+il_set_rxon_hwcrypto(struct il_priv *il,
+ struct il_rxon_context *ctx,
+ int hw_decrypt)
+{
+ struct il_rxon_cmd *rxon = &ctx->staging;
+
+ if (hw_decrypt)
+ rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
+ else
+ rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
+
+}
+EXPORT_SYMBOL(il_set_rxon_hwcrypto);
+
+/* validate RXON structure is valid */
+int
+il_check_rxon_cmd(struct il_priv *il, struct il_rxon_context *ctx)
+{
+ struct il_rxon_cmd *rxon = &ctx->staging;
+ bool error = false;
+
+ if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
+ if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
+ IL_WARN("check 2.4G: wrong narrow\n");
+ error = true;
+ }
+ if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
+ IL_WARN("check 2.4G: wrong radar\n");
+ error = true;
+ }
+ } else {
+ if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
+ IL_WARN("check 5.2G: not short slot!\n");
+ error = true;
+ }
+ if (rxon->flags & RXON_FLG_CCK_MSK) {
+ IL_WARN("check 5.2G: CCK!\n");
+ error = true;
+ }
+ }
+ if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
+ IL_WARN("mac/bssid mcast!\n");
+ error = true;
+ }
+
+ /* make sure basic rates 6Mbps and 1Mbps are supported */
+ if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 &&
+ (rxon->cck_basic_rates & RATE_1M_MASK) == 0) {
+ IL_WARN("neither 1 nor 6 are basic\n");
+ error = true;
+ }
+
+ if (le16_to_cpu(rxon->assoc_id) > 2007) {
+ IL_WARN("aid > 2007\n");
+ error = true;
+ }
+
+ if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
+ == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
+ IL_WARN("CCK and short slot\n");
+ error = true;
+ }
+
+ if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
+ == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
+ IL_WARN("CCK and auto detect");
+ error = true;
+ }
+
+ if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
+ RXON_FLG_TGG_PROTECT_MSK)) ==
+ RXON_FLG_TGG_PROTECT_MSK) {
+ IL_WARN("TGg but no auto-detect\n");
+ error = true;
+ }
+
+ if (error)
+ IL_WARN("Tuning to channel %d\n",
+ le16_to_cpu(rxon->channel));
+
+ if (error) {
+ IL_ERR("Invalid RXON\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(il_check_rxon_cmd);
+
+/**
+ * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
+ * @il: 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.
+ */
+int il_full_rxon_required(struct il_priv *il,
+ struct il_rxon_context *ctx)
+{
+ const struct il_rxon_cmd *staging = &ctx->staging;
+ const struct il_rxon_cmd *active = &ctx->active;
+
+#define CHK(cond) \
+ if ((cond)) { \
+ D_INFO("need full RXON - " #cond "\n"); \
+ return 1; \
+ }
+
+#define CHK_NEQ(c1, c2) \
+ if ((c1) != (c2)) { \
+ D_INFO("need full RXON - " \
+ #c1 " != " #c2 " - %d != %d\n", \
+ (c1), (c2)); \
+ return 1; \
+ }
+
+ /* These items are only settable from the full RXON command */
+ CHK(!il_is_associated_ctx(ctx));
+ CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
+ CHK(compare_ether_addr(staging->node_addr, active->node_addr));
+ CHK(compare_ether_addr(staging->wlap_bssid_addr,
+ active->wlap_bssid_addr));
+ CHK_NEQ(staging->dev_type, active->dev_type);
+ CHK_NEQ(staging->channel, active->channel);
+ CHK_NEQ(staging->air_propagation, active->air_propagation);
+ CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
+ active->ofdm_ht_single_stream_basic_rates);
+ CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
+ active->ofdm_ht_dual_stream_basic_rates);
+ CHK_NEQ(staging->assoc_id, active->assoc_id);
+
+ /* 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 */
+ CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
+ active->flags & RXON_FLG_BAND_24G_MSK);
+
+ /* Check if we are switching association toggle */
+ CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
+ active->filter_flags & RXON_FILTER_ASSOC_MSK);
+
+#undef CHK
+#undef CHK_NEQ
+
+ return 0;
+}
+EXPORT_SYMBOL(il_full_rxon_required);
+
+u8 il_get_lowest_plcp(struct il_priv *il,
+ struct il_rxon_context *ctx)
+{
+ /*
+ * Assign the lowest rate -- should really get this from
+ * the beacon skb from mac80211.
+ */
+ if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
+ return RATE_1M_PLCP;
+ else
+ return RATE_6M_PLCP;
+}
+EXPORT_SYMBOL(il_get_lowest_plcp);
+
+static void _il_set_rxon_ht(struct il_priv *il,
+ struct il_ht_config *ht_conf,
+ struct il_rxon_context *ctx)
+{
+ struct il_rxon_cmd *rxon = &ctx->staging;
+
+ if (!ctx->ht.enabled) {
+ rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
+ RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
+ RXON_FLG_HT40_PROT_MSK |
+ RXON_FLG_HT_PROT_MSK);
+ return;
+ }
+
+ rxon->flags |= cpu_to_le32(ctx->ht.protection <<
+ RXON_FLG_HT_OPERATING_MODE_POS);
+
+ /* Set up channel bandwidth:
+ * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
+ /* clear the HT channel mode before set the mode */
+ rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
+ RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
+ if (il_is_ht40_tx_allowed(il, ctx, NULL)) {
+ /* pure ht40 */
+ if (ctx->ht.protection ==
+ IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
+ rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
+ /* Note: control channel is opposite of extension channel */
+ switch (ctx->ht.extension_chan_offset) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ rxon->flags &=
+ ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ rxon->flags |=
+ RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
+ break;
+ }
+ } else {
+ /* Note: control channel is opposite of extension channel */
+ switch (ctx->ht.extension_chan_offset) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ rxon->flags &=
+ ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
+ rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ rxon->flags |=
+ RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
+ rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_NONE:
+ default:
+ /* channel location only valid if in Mixed mode */
+ IL_ERR(
+ "invalid extension channel offset\n");
+ break;
+ }
+ }
+ } else {
+ rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
+ }
+
+ if (il->cfg->ops->hcmd->set_rxon_chain)
+ il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
+
+ D_ASSOC("rxon flags 0x%X operation mode :0x%X "
+ "extension channel offset 0x%x\n",
+ le32_to_cpu(rxon->flags), ctx->ht.protection,
+ ctx->ht.extension_chan_offset);
+}
+
+void il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf)
+{
+ _il_set_rxon_ht(il, ht_conf, &il->ctx);
+}
+EXPORT_SYMBOL(il_set_rxon_ht);
+
+/* Return valid, unused, channel for a passive scan to reset the RF */
+u8 il_get_single_channel_number(struct il_priv *il,
+ enum ieee80211_band band)
+{
+ const struct il_channel_info *ch_info;
+ int i;
+ u8 channel = 0;
+ u8 min, max;
+
+ if (band == IEEE80211_BAND_5GHZ) {
+ min = 14;
+ max = il->channel_count;
+ } else {
+ min = 0;
+ max = 14;
+ }
+
+ for (i = min; i < max; i++) {
+ channel = il->channel_info[i].channel;
+ if (channel == le16_to_cpu(il->ctx.staging.channel))
+ continue;
+
+ ch_info = il_get_channel_info(il, band, channel);
+ if (il_is_channel_valid(ch_info))
+ break;
+ }
+
+ return channel;
+}
+EXPORT_SYMBOL(il_get_single_channel_number);
+
+/**
+ * il_set_rxon_channel - Set the band and channel values in staging RXON
+ * @ch: requested channel as a pointer to struct ieee80211_channel
+
+ * NOTE: Does not commit to the hardware; it sets appropriate bit fields
+ * in the staging RXON flag structure based on the ch->band
+ */
+int
+il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch,
+ struct il_rxon_context *ctx)
+{
+ enum ieee80211_band band = ch->band;
+ u16 channel = ch->hw_value;
+
+ if (le16_to_cpu(ctx->staging.channel) == channel && il->band == band)
+ return 0;
+
+ ctx->staging.channel = cpu_to_le16(channel);
+ if (band == IEEE80211_BAND_5GHZ)
+ ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
+ else
+ ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
+
+ il->band = band;
+
+ D_INFO("Staging channel set to %d [%d]\n", channel, band);
+
+ return 0;
+}
+EXPORT_SYMBOL(il_set_rxon_channel);
+
+void il_set_flags_for_band(struct il_priv *il,
+ struct il_rxon_context *ctx,
+ enum ieee80211_band band,
+ struct ieee80211_vif *vif)
+{
+ if (band == IEEE80211_BAND_5GHZ) {
+ ctx->staging.flags &=
+ ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
+ | RXON_FLG_CCK_MSK);
+ ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
+ } else {
+ /* Copied from il_post_associate() */
+ if (vif && vif->bss_conf.use_short_slot)
+ ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
+ else
+ ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+ ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
+ ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
+ ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
+ }
+}
+EXPORT_SYMBOL(il_set_flags_for_band);
+
+/*
+ * initialize rxon structure with default values from eeprom
+ */
+void il_connection_init_rx_config(struct il_priv *il,
+ struct il_rxon_context *ctx)
+{
+ const struct il_channel_info *ch_info;
+
+ memset(&ctx->staging, 0, sizeof(ctx->staging));
+
+ if (!ctx->vif) {
+ ctx->staging.dev_type = ctx->unused_devtype;
+ } else
+ switch (ctx->vif->type) {
+
+ case NL80211_IFTYPE_STATION:
+ ctx->staging.dev_type = ctx->station_devtype;
+ ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
+ break;
+
+ case NL80211_IFTYPE_ADHOC:
+ ctx->staging.dev_type = ctx->ibss_devtype;
+ ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
+ ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
+ RXON_FILTER_ACCEPT_GRP_MSK;
+ break;
+
+ default:
+ IL_ERR("Unsupported interface type %d\n",
+ ctx->vif->type);
+ break;
+ }
+
+#if 0
+ /* TODO: Figure out when short_preamble would be set and cache from
+ * that */
+ if (!hw_to_local(il->hw)->short_preamble)
+ ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+ else
+ ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+#endif
+
+ ch_info = il_get_channel_info(il, il->band,
+ le16_to_cpu(ctx->active.channel));
+
+ if (!ch_info)
+ ch_info = &il->channel_info[0];
+
+ ctx->staging.channel = cpu_to_le16(ch_info->channel);
+ il->band = ch_info->band;
+
+ il_set_flags_for_band(il, ctx, il->band, ctx->vif);
+
+ ctx->staging.ofdm_basic_rates =
+ (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
+ ctx->staging.cck_basic_rates =
+ (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
+
+ /* clear both MIX and PURE40 mode flag */
+ ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
+ RXON_FLG_CHANNEL_MODE_PURE_40);
+ if (ctx->vif)
+ memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
+
+ ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
+ ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
+}
+EXPORT_SYMBOL(il_connection_init_rx_config);
+
+void il_set_rate(struct il_priv *il)
+{
+ const struct ieee80211_supported_band *hw = NULL;
+ struct ieee80211_rate *rate;
+ int i;
+
+ hw = il_get_hw_mode(il, il->band);
+ if (!hw) {
+ IL_ERR("Failed to set rate: unable to get hw mode\n");
+ return;
+ }
+
+ il->active_rate = 0;
+
+ for (i = 0; i < hw->n_bitrates; i++) {
+ rate = &(hw->bitrates[i]);
+ if (rate->hw_value < RATE_COUNT_LEGACY)
+ il->active_rate |= (1 << rate->hw_value);
+ }
+
+ D_RATE("Set active_rate = %0x\n", il->active_rate);
+
+ il->ctx.staging.cck_basic_rates =
+ (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
+
+ il->ctx.staging.ofdm_basic_rates =
+ (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
+}
+EXPORT_SYMBOL(il_set_rate);
+
+void il_chswitch_done(struct il_priv *il, bool is_success)
+{
+ struct il_rxon_context *ctx = &il->ctx;
+
+ if (test_bit(S_EXIT_PENDING, &il->status))
+ return;
+
+ if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
+ ieee80211_chswitch_done(ctx->vif, is_success);
+}
+EXPORT_SYMBOL(il_chswitch_done);
+
+void il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb)
+{
+ struct il_rx_pkt *pkt = rxb_addr(rxb);
+ struct il_csa_notification *csa = &(pkt->u.csa_notif);
+
+ struct il_rxon_context *ctx = &il->ctx;
+ struct il_rxon_cmd *rxon = (void *)&ctx->active;
+
+ if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
+ return;
+
+ if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) {
+ rxon->channel = csa->channel;
+ ctx->staging.channel = csa->channel;
+ D_11H("CSA notif: channel %d\n",
+ le16_to_cpu(csa->channel));
+ il_chswitch_done(il, true);
+ } else {
+ IL_ERR("CSA notif (fail) : channel %d\n",
+ le16_to_cpu(csa->channel));
+ il_chswitch_done(il, false);
+ }
+}
+EXPORT_SYMBOL(il_hdl_csa);
+
+#ifdef CONFIG_IWLEGACY_DEBUG
+void il_print_rx_config_cmd(struct il_priv *il,
+ struct il_rxon_context *ctx)
+{
+ struct il_rxon_cmd *rxon = &ctx->staging;
+
+ D_RADIO("RX CONFIG:\n");
+ il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
+ D_RADIO("u16 channel: 0x%x\n",
+ le16_to_cpu(rxon->channel));
+ D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
+ D_RADIO("u32 filter_flags: 0x%08x\n",
+ le32_to_cpu(rxon->filter_flags));
+ D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
+ D_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
+ rxon->ofdm_basic_rates);
+ D_RADIO("u8 cck_basic_rates: 0x%02x\n",
+ rxon->cck_basic_rates);
+ D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
+ D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
+ D_RADIO("u16 assoc_id: 0x%x\n",
+ le16_to_cpu(rxon->assoc_id));
+}
+EXPORT_SYMBOL(il_print_rx_config_cmd);
+#endif
+/**
+ * il_irq_handle_error - called for HW or SW error interrupt from card
+ */
+void il_irq_handle_error(struct il_priv *il)
+{
+ /* Set the FW error flag -- cleared on il_down */
+ set_bit(S_FW_ERROR, &il->status);
+
+ /* Cancel currently queued command. */
+ clear_bit(S_HCMD_ACTIVE, &il->status);
+
+ IL_ERR("Loaded firmware version: %s\n",
+ il->hw->wiphy->fw_version);
+
+ il->cfg->ops->lib->dump_nic_error_log(il);
+ if (il->cfg->ops->lib->dump_fh)
+ il->cfg->ops->lib->dump_fh(il, NULL, false);
+#ifdef CONFIG_IWLEGACY_DEBUG
+ if (il_get_debug_level(il) & IL_DL_FW_ERRORS)
+ il_print_rx_config_cmd(il,
+ &il->ctx);
+#endif
+
+ wake_up(&il->wait_command_queue);
+
+ /* Keep the restart process from trying to send host
+ * commands by clearing the INIT status bit */
+ clear_bit(S_READY, &il->status);
+
+ if (!test_bit(S_EXIT_PENDING, &il->status)) {
+ IL_DBG(IL_DL_FW_ERRORS,
+ "Restarting adapter due to uCode error.\n");
+
+ if (il->cfg->mod_params->restart_fw)
+ queue_work(il->workqueue, &il->restart);
+ }
+}
+EXPORT_SYMBOL(il_irq_handle_error);
+
+static int il_apm_stop_master(struct il_priv *il)
+{
+ int ret = 0;
+
+ /* stop device's busmaster DMA activity */
+ il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
+
+ ret = _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
+ CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
+ if (ret)
+ IL_WARN("Master Disable Timed Out, 100 usec\n");
+
+ D_INFO("stop master\n");
+
+ return ret;
+}
+
+void il_apm_stop(struct il_priv *il)
+{
+ D_INFO("Stop card, put in low power state\n");
+
+ /* Stop device's DMA activity */
+ il_apm_stop_master(il);
+
+ /* Reset the entire device */
+ il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+
+ udelay(10);
+
+ /*
+ * Clear "initialization complete" bit to move adapter from
+ * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
+ */
+ il_clear_bit(il, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+}
+EXPORT_SYMBOL(il_apm_stop);
+
+
+/*
+ * Start up NIC's basic functionality after it has been reset
+ * (e.g. after platform boot, or shutdown via il_apm_stop())
+ * NOTE: This does not load uCode nor start the embedded processor
+ */
+int il_apm_init(struct il_priv *il)
+{
+ int ret = 0;
+ u16 lctl;
+
+ D_INFO("Init card's basic functions\n");
+
+ /*
+ * Use "set_bit" below rather than "write", to preserve any hardware
+ * bits already set by default after reset.
+ */
+
+ /* Disable L0S exit timer (platform NMI Work/Around) */
+ il_set_bit(il, CSR_GIO_CHICKEN_BITS,
+ CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
+
+ /*
+ * Disable L0s without affecting L1;
+ * don't wait for ICH L0s (ICH bug W/A)
+ */
+ il_set_bit(il, CSR_GIO_CHICKEN_BITS,
+ CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
+
+ /* Set FH wait threshold to maximum (HW error during stress W/A) */
+ il_set_bit(il, CSR_DBG_HPET_MEM_REG,
+ CSR_DBG_HPET_MEM_REG_VAL);
+
+ /*
+ * Enable HAP INTA (interrupt from management bus) to
+ * wake device's PCI Express link L1a -> L0s
+ * NOTE: This is no-op for 3945 (non-existent bit)
+ */
+ il_set_bit(il, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
+
+ /*
+ * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
+ * Check if BIOS (or OS) enabled L1-ASPM on this device.
+ * If so (likely), disable L0S, so device moves directly L0->L1;
+ * costs negligible amount of power savings.
+ * If not (unlikely), enable L0S, so there is at least some
+ * power savings, even without L1.
+ */
+ if (il->cfg->base_params->set_l0s) {
+ lctl = il_pcie_link_ctl(il);
+ if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
+ PCI_CFG_LINK_CTRL_VAL_L1_EN) {
+ /* L1-ASPM enabled; disable(!) L0S */
+ il_set_bit(il, CSR_GIO_REG,
+ CSR_GIO_REG_VAL_L0S_ENABLED);
+ D_POWER("L1 Enabled; Disabling L0S\n");
+ } else {
+ /* L1-ASPM disabled; enable(!) L0S */
+ il_clear_bit(il, CSR_GIO_REG,
+ CSR_GIO_REG_VAL_L0S_ENABLED);
+ D_POWER("L1 Disabled; Enabling L0S\n");
+ }
+ }
+
+ /* Configure analog phase-lock-loop before activating to D0A */
+ if (il->cfg->base_params->pll_cfg_val)
+ il_set_bit(il, CSR_ANA_PLL_CFG,
+ il->cfg->base_params->pll_cfg_val);
+
+ /*
+ * Set "initialization complete" bit to move adapter from
+ * D0U* --> D0A* (powered-up active) state.
+ */
+ il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+
+ /*
+ * Wait for clock stabilization; once stabilized, access to
+ * device-internal resources is supported, e.g. il_wr_prph()
+ * and accesses to uCode SRAM.
+ */
+ ret = _il_poll_bit(il, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
+ if (ret < 0) {
+ D_INFO("Failed to init the card\n");
+ goto out;
+ }
+
+ /*
+ * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
+ * BSM (Boostrap State Machine) is only in 3945 and 4965.
+ *
+ * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
+ * do not disable clocks. This preserves any hardware bits already
+ * set by default in "CLK_CTRL_REG" after reset.
+ */
+ if (il->cfg->base_params->use_bsm)
+ il_wr_prph(il, APMG_CLK_EN_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
+ else
+ il_wr_prph(il, APMG_CLK_EN_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT);
+ udelay(20);
+
+ /* Disable L1-Active */
+ il_set_bits_prph(il, APMG_PCIDEV_STT_REG,
+ APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+
+out:
+ return ret;
+}
+EXPORT_SYMBOL(il_apm_init);
+
+
+int il_set_tx_power(struct il_priv *il, s8 tx_power, bool force)
+{
+ int ret;
+ s8 prev_tx_power;
+ bool defer;
+ struct il_rxon_context *ctx = &il->ctx;
+
+ lockdep_assert_held(&il->mutex);
+
+ if (il->tx_power_user_lmt == tx_power && !force)
+ return 0;
+
+ if (!il->cfg->ops->lib->send_tx_power)
+ return -EOPNOTSUPP;
+
+ /* 0 dBm mean 1 milliwatt */
+ if (tx_power < 0) {
+ IL_WARN(
+ "Requested user TXPOWER %d below 1 mW.\n",
+ tx_power);
+ return -EINVAL;
+ }
+
+ if (tx_power > il->tx_power_device_lmt) {
+ IL_WARN(
+ "Requested user TXPOWER %d above upper limit %d.\n",
+ tx_power, il->tx_power_device_lmt);
+ return -EINVAL;
+ }
+
+ if (!il_is_ready_rf(il))
+ return -EIO;
+
+ /* scan complete and commit_rxon use tx_power_next value,
+ * it always need to be updated for newest request */
+ il->tx_power_next = tx_power;
+
+ /* do not set tx power when scanning or channel changing */
+ defer = test_bit(S_SCANNING, &il->status) ||
+ memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
+ if (defer && !force) {
+ D_INFO("Deferring tx power set\n");
+ return 0;
+ }
+
+ prev_tx_power = il->tx_power_user_lmt;
+ il->tx_power_user_lmt = tx_power;
+
+ ret = il->cfg->ops->lib->send_tx_power(il);
+
+ /* if fail to set tx_power, restore the orig. tx power */
+ if (ret) {
+ il->tx_power_user_lmt = prev_tx_power;
+ il->tx_power_next = prev_tx_power;
+ }
+ return ret;
+}
+EXPORT_SYMBOL(il_set_tx_power);
+
+void il_send_bt_config(struct il_priv *il)
+{
+ struct il_bt_cmd bt_cmd = {
+ .lead_time = BT_LEAD_TIME_DEF,
+ .max_kill = BT_MAX_KILL_DEF,
+ .kill_ack_mask = 0,
+ .kill_cts_mask = 0,
+ };
+
+ if (!bt_coex_active)
+ bt_cmd.flags = BT_COEX_DISABLE;
+ else
+ bt_cmd.flags = BT_COEX_ENABLE;
+
+ D_INFO("BT coex %s\n",
+ (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
+
+ if (il_send_cmd_pdu(il, C_BT_CONFIG,
+ sizeof(struct il_bt_cmd), &bt_cmd))
+ IL_ERR("failed to send BT Coex Config\n");
+}
+EXPORT_SYMBOL(il_send_bt_config);
+
+int il_send_stats_request(struct il_priv *il, u8 flags, bool clear)
+{
+ struct il_stats_cmd stats_cmd = {
+ .configuration_flags =
+ clear ? IL_STATS_CONF_CLEAR_STATS : 0,
+ };
+
+ if (flags & CMD_ASYNC)
+ return il_send_cmd_pdu_async(il, C_STATS,
+ sizeof(struct il_stats_cmd),
+ &stats_cmd, NULL);
+ else
+ return il_send_cmd_pdu(il, C_STATS,
+ sizeof(struct il_stats_cmd),
+ &stats_cmd);
+}
+EXPORT_SYMBOL(il_send_stats_request);
+
+void il_hdl_pm_sleep(struct il_priv *il,
+ struct il_rx_buf *rxb)
+{
+#ifdef CONFIG_IWLEGACY_DEBUG
+ struct il_rx_pkt *pkt = rxb_addr(rxb);
+ struct il_sleep_notification *sleep = &(pkt->u.sleep_notif);
+ D_RX("sleep mode: %d, src: %d\n",
+ sleep->pm_sleep_mode, sleep->pm_wakeup_src);
+#endif
+}
+EXPORT_SYMBOL(il_hdl_pm_sleep);
+
+void il_hdl_pm_debug_stats(struct il_priv *il,
+ struct il_rx_buf *rxb)
+{
+ struct il_rx_pkt *pkt = rxb_addr(rxb);
+ u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+ D_RADIO("Dumping %d bytes of unhandled "
+ "notification for %s:\n", len,
+ il_get_cmd_string(pkt->hdr.cmd));
+ il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len);
+}
+EXPORT_SYMBOL(il_hdl_pm_debug_stats);
+
+void il_hdl_error(struct il_priv *il,
+ struct il_rx_buf *rxb)
+{
+ struct il_rx_pkt *pkt = rxb_addr(rxb);
+
+ IL_ERR("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),
+ il_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));
+}
+EXPORT_SYMBOL(il_hdl_error);
+
+void il_clear_isr_stats(struct il_priv *il)
+{
+ memset(&il->isr_stats, 0, sizeof(il->isr_stats));
+}
+
+int il_mac_conf_tx(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct il_priv *il = hw->priv;
+ unsigned long flags;
+ int q;
+
+ D_MAC80211("enter\n");
+
+ if (!il_is_ready_rf(il)) {
+ D_MAC80211("leave - RF not ready\n");
+ return -EIO;
+ }
+
+ if (queue >= AC_NUM) {
+ D_MAC80211("leave - queue >= AC_NUM %d\n", queue);
+ return 0;
+ }
+
+ q = AC_NUM - 1 - queue;
+
+ spin_lock_irqsave(&il->lock, flags);
+
+ il->ctx.qos_data.def_qos_parm.ac[q].cw_min =
+ cpu_to_le16(params->cw_min);
+ il->ctx.qos_data.def_qos_parm.ac[q].cw_max =
+ cpu_to_le16(params->cw_max);
+ il->ctx.qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
+ il->ctx.qos_data.def_qos_parm.ac[q].edca_txop =
+ cpu_to_le16((params->txop * 32));
+
+ il->ctx.qos_data.def_qos_parm.ac[q].reserved1 = 0;
+
+ spin_unlock_irqrestore(&il->lock, flags);
+
+ D_MAC80211("leave\n");
+ return 0;
+}
+EXPORT_SYMBOL(il_mac_conf_tx);
+
+int il_mac_tx_last_beacon(struct ieee80211_hw *hw)
+{
+ struct il_priv *il = hw->priv;
+
+ return il->ibss_manager == IL_IBSS_MANAGER;
+}
+EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon);
+
+static int
+il_set_mode(struct il_priv *il, struct il_rxon_context *ctx)
+{
+ il_connection_init_rx_config(il, ctx);
+
+ if (il->cfg->ops->hcmd->set_rxon_chain)
+ il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
+
+ return il_commit_rxon(il, ctx);
+}
+
+static int il_setup_interface(struct il_priv *il,
+ struct il_rxon_context *ctx)
+{
+ struct ieee80211_vif *vif = ctx->vif;
+ int err;
+
+ lockdep_assert_held(&il->mutex);
+
+ /*
+ * This variable will be correct only when there's just
+ * a single context, but all code using it is for hardware
+ * that supports only one context.
+ */
+ il->iw_mode = vif->type;
+
+ ctx->is_active = true;
+
+ err = il_set_mode(il, ctx);
+ if (err) {
+ if (!ctx->always_active)
+ ctx->is_active = false;
+ return err;
+ }
+
+ return 0;
+}
+
+int
+il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+ struct il_priv *il = hw->priv;
+ struct il_vif_priv *vif_priv = (void *)vif->drv_priv;
+ int err;
+ u32 modes;
+
+ D_MAC80211("enter: type %d, addr %pM\n",
+ vif->type, vif->addr);
+
+ mutex_lock(&il->mutex);
+
+ if (!il_is_ready_rf(il)) {
+ IL_WARN("Try to add interface when device not ready\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+
+ /* check if busy context is exclusive */
+ if (il->ctx.vif &&
+ (il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type))) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ modes = il->ctx.interface_modes | il->ctx.exclusive_interface_modes;
+ if (!(modes & BIT(vif->type))) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ vif_priv->ctx = &il->ctx;
+ il->ctx.vif = vif;
+
+ err = il_setup_interface(il, &il->ctx);
+ if (err) {
+ il->ctx.vif = NULL;
+ il->iw_mode = NL80211_IFTYPE_STATION;
+ }
+
+ out:
+ mutex_unlock(&il->mutex);
+
+ D_MAC80211("leave\n");
+ return err;
+}
+EXPORT_SYMBOL(il_mac_add_interface);
+
+static void il_teardown_interface(struct il_priv *il,
+ struct ieee80211_vif *vif,
+ bool mode_change)
+{
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+
+ lockdep_assert_held(&il->mutex);
+
+ if (il->scan_vif == vif) {
+ il_scan_cancel_timeout(il, 200);
+ il_force_scan_end(il);
+ }
+
+ if (!mode_change) {
+ il_set_mode(il, ctx);
+ if (!ctx->always_active)
+ ctx->is_active = false;
+ }
+}
+
+void il_mac_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct il_priv *il = hw->priv;
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+
+ D_MAC80211("enter\n");
+
+ mutex_lock(&il->mutex);
+
+ WARN_ON(ctx->vif != vif);
+ ctx->vif = NULL;
+
+ il_teardown_interface(il, vif, false);
+
+ memset(il->bssid, 0, ETH_ALEN);
+ mutex_unlock(&il->mutex);
+
+ D_MAC80211("leave\n");
+
+}
+EXPORT_SYMBOL(il_mac_remove_interface);
+
+int il_alloc_txq_mem(struct il_priv *il)
+{
+ if (!il->txq)
+ il->txq = kzalloc(
+ sizeof(struct il_tx_queue) *
+ il->cfg->base_params->num_of_queues,
+ GFP_KERNEL);
+ if (!il->txq) {
+ IL_ERR("Not enough memory for txq\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(il_alloc_txq_mem);
+
+void il_txq_mem(struct il_priv *il)
+{
+ kfree(il->txq);
+ il->txq = NULL;
+}
+EXPORT_SYMBOL(il_txq_mem);
+
+#ifdef CONFIG_IWLEGACY_DEBUGFS
+
+#define IL_TRAFFIC_DUMP_SIZE (IL_TRAFFIC_ENTRY_SIZE * IL_TRAFFIC_ENTRIES)
+
+void il_reset_traffic_log(struct il_priv *il)
+{
+ il->tx_traffic_idx = 0;
+ il->rx_traffic_idx = 0;
+ if (il->tx_traffic)
+ memset(il->tx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
+ if (il->rx_traffic)
+ memset(il->rx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
+}
+
+int il_alloc_traffic_mem(struct il_priv *il)
+{
+ u32 traffic_size = IL_TRAFFIC_DUMP_SIZE;
+
+ if (il_debug_level & IL_DL_TX) {
+ if (!il->tx_traffic) {
+ il->tx_traffic =
+ kzalloc(traffic_size, GFP_KERNEL);
+ if (!il->tx_traffic)
+ return -ENOMEM;
+ }
+ }
+ if (il_debug_level & IL_DL_RX) {
+ if (!il->rx_traffic) {
+ il->rx_traffic =
+ kzalloc(traffic_size, GFP_KERNEL);
+ if (!il->rx_traffic)
+ return -ENOMEM;
+ }
+ }
+ il_reset_traffic_log(il);
+ return 0;
+}
+EXPORT_SYMBOL(il_alloc_traffic_mem);
+
+void il_free_traffic_mem(struct il_priv *il)
+{
+ kfree(il->tx_traffic);
+ il->tx_traffic = NULL;
+
+ kfree(il->rx_traffic);
+ il->rx_traffic = NULL;
+}
+EXPORT_SYMBOL(il_free_traffic_mem);
+
+void il_dbg_log_tx_data_frame(struct il_priv *il,
+ u16 length, struct ieee80211_hdr *header)
+{
+ __le16 fc;
+ u16 len;
+
+ if (likely(!(il_debug_level & IL_DL_TX)))
+ return;
+
+ if (!il->tx_traffic)
+ return;
+
+ fc = header->frame_control;
+ if (ieee80211_is_data(fc)) {
+ len = (length > IL_TRAFFIC_ENTRY_SIZE)
+ ? IL_TRAFFIC_ENTRY_SIZE : length;
+ memcpy((il->tx_traffic +
+ (il->tx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)),
+ header, len);
+ il->tx_traffic_idx =
+ (il->tx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
+ }
+}
+EXPORT_SYMBOL(il_dbg_log_tx_data_frame);
+
+void il_dbg_log_rx_data_frame(struct il_priv *il,
+ u16 length, struct ieee80211_hdr *header)
+{
+ __le16 fc;
+ u16 len;
+
+ if (likely(!(il_debug_level & IL_DL_RX)))
+ return;
+
+ if (!il->rx_traffic)
+ return;
+
+ fc = header->frame_control;
+ if (ieee80211_is_data(fc)) {
+ len = (length > IL_TRAFFIC_ENTRY_SIZE)
+ ? IL_TRAFFIC_ENTRY_SIZE : length;
+ memcpy((il->rx_traffic +
+ (il->rx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)),
+ header, len);
+ il->rx_traffic_idx =
+ (il->rx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
+ }
+}
+EXPORT_SYMBOL(il_dbg_log_rx_data_frame);
+
+const char *il_get_mgmt_string(int cmd)
+{
+ switch (cmd) {
+ IL_CMD(MANAGEMENT_ASSOC_REQ);
+ IL_CMD(MANAGEMENT_ASSOC_RESP);
+ IL_CMD(MANAGEMENT_REASSOC_REQ);
+ IL_CMD(MANAGEMENT_REASSOC_RESP);
+ IL_CMD(MANAGEMENT_PROBE_REQ);
+ IL_CMD(MANAGEMENT_PROBE_RESP);
+ IL_CMD(MANAGEMENT_BEACON);
+ IL_CMD(MANAGEMENT_ATIM);
+ IL_CMD(MANAGEMENT_DISASSOC);
+ IL_CMD(MANAGEMENT_AUTH);
+ IL_CMD(MANAGEMENT_DEAUTH);
+ IL_CMD(MANAGEMENT_ACTION);
+ default:
+ return "UNKNOWN";
+
+ }
+}
+
+const char *il_get_ctrl_string(int cmd)
+{
+ switch (cmd) {
+ IL_CMD(CONTROL_BACK_REQ);
+ IL_CMD(CONTROL_BACK);
+ IL_CMD(CONTROL_PSPOLL);
+ IL_CMD(CONTROL_RTS);
+ IL_CMD(CONTROL_CTS);
+ IL_CMD(CONTROL_ACK);
+ IL_CMD(CONTROL_CFEND);
+ IL_CMD(CONTROL_CFENDACK);
+ default:
+ return "UNKNOWN";
+
+ }
+}
+
+void il_clear_traffic_stats(struct il_priv *il)
+{
+ memset(&il->tx_stats, 0, sizeof(struct traffic_stats));
+ memset(&il->rx_stats, 0, sizeof(struct traffic_stats));
+}
+
+/*
+ * if CONFIG_IWLEGACY_DEBUGFS defined,
+ * il_update_stats function will
+ * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass
+ * Use debugFs to display the rx/rx_stats
+ * if CONFIG_IWLEGACY_DEBUGFS not being defined, then no MGMT and CTRL
+ * information will be recorded, but DATA pkt still will be recorded
+ * for the reason of il_led.c need to control the led blinking based on
+ * number of tx and rx data.
+ *
+ */
+void
+il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len)
+{
+ struct traffic_stats *stats;
+
+ if (is_tx)
+ stats = &il->tx_stats;
+ else
+ stats = &il->rx_stats;
+
+ if (ieee80211_is_mgmt(fc)) {
+ switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
+ case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
+ stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
+ stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
+ stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
+ stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
+ stats->mgmt[MANAGEMENT_PROBE_REQ]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
+ stats->mgmt[MANAGEMENT_PROBE_RESP]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_BEACON):
+ stats->mgmt[MANAGEMENT_BEACON]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_ATIM):
+ stats->mgmt[MANAGEMENT_ATIM]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
+ stats->mgmt[MANAGEMENT_DISASSOC]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_AUTH):
+ stats->mgmt[MANAGEMENT_AUTH]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
+ stats->mgmt[MANAGEMENT_DEAUTH]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_ACTION):
+ stats->mgmt[MANAGEMENT_ACTION]++;
+ break;
+ }
+ } else if (ieee80211_is_ctl(fc)) {
+ switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
+ case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
+ stats->ctrl[CONTROL_BACK_REQ]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_BACK):
+ stats->ctrl[CONTROL_BACK]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
+ stats->ctrl[CONTROL_PSPOLL]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_RTS):
+ stats->ctrl[CONTROL_RTS]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_CTS):
+ stats->ctrl[CONTROL_CTS]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_ACK):
+ stats->ctrl[CONTROL_ACK]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_CFEND):
+ stats->ctrl[CONTROL_CFEND]++;
+ break;
+ case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
+ stats->ctrl[CONTROL_CFENDACK]++;
+ break;
+ }
+ } else {
+ /* data */
+ stats->data_cnt++;
+ stats->data_bytes += len;
+ }
+}
+EXPORT_SYMBOL(il_update_stats);
+#endif
+
+int il_force_reset(struct il_priv *il, bool external)
+{
+ struct il_force_reset *force_reset;
+
+ if (test_bit(S_EXIT_PENDING, &il->status))
+ return -EINVAL;
+
+ force_reset = &il->force_reset;
+ force_reset->reset_request_count++;
+ if (!external) {
+ if (force_reset->last_force_reset_jiffies &&
+ time_after(force_reset->last_force_reset_jiffies +
+ force_reset->reset_duration, jiffies)) {
+ D_INFO("force reset rejected\n");
+ force_reset->reset_reject_count++;
+ return -EAGAIN;
+ }
+ }
+ force_reset->reset_success_count++;
+ force_reset->last_force_reset_jiffies = jiffies;
+
+ /*
+ * if the request is from external(ex: debugfs),
+ * then always perform the request in regardless the module
+ * parameter setting
+ * if the request is from internal (uCode error or driver
+ * detect failure), then fw_restart module parameter
+ * need to be check before performing firmware reload
+ */
+
+ if (!external && !il->cfg->mod_params->restart_fw) {
+ D_INFO("Cancel firmware reload based on "
+ "module parameter setting\n");
+ return 0;
+ }
+
+ IL_ERR("On demand firmware reload\n");
+
+ /* Set the FW error flag -- cleared on il_down */
+ set_bit(S_FW_ERROR, &il->status);
+ wake_up(&il->wait_command_queue);
+ /*
+ * Keep the restart process from trying to send host
+ * commands by clearing the INIT status bit
+ */
+ clear_bit(S_READY, &il->status);
+ queue_work(il->workqueue, &il->restart);
+
+ return 0;
+}
+
+int
+il_mac_change_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum nl80211_iftype newtype, bool newp2p)
+{
+ struct il_priv *il = hw->priv;
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+ u32 modes;
+ int err;
+
+ newtype = ieee80211_iftype_p2p(newtype, newp2p);
+
+ mutex_lock(&il->mutex);
+
+ if (!ctx->vif || !il_is_ready_rf(il)) {
+ /*
+ * Huh? But wait ... this can maybe happen when
+ * we're in the middle of a firmware restart!
+ */
+ err = -EBUSY;
+ goto out;
+ }
+
+ modes = ctx->interface_modes | ctx->exclusive_interface_modes;
+ if (!(modes & BIT(newtype))) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if ((il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type)) ||
+ (il->ctx.exclusive_interface_modes & BIT(newtype))) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* success */
+ il_teardown_interface(il, vif, true);
+ vif->type = newtype;
+ vif->p2p = newp2p;
+ err = il_setup_interface(il, ctx);
+ WARN_ON(err);
+ /*
+ * We've switched internally, but submitting to the
+ * device may have failed for some reason. Mask this
+ * error, because otherwise mac80211 will not switch
+ * (and set the interface type back) and we'll be
+ * out of sync with it.
+ */
+ err = 0;
+
+ out:
+ mutex_unlock(&il->mutex);
+ return err;
+}
+EXPORT_SYMBOL(il_mac_change_interface);
+
+/*
+ * On every watchdog tick we check (latest) time stamp. If it does not
+ * change during timeout period and queue is not empty we reset firmware.
+ */
+static int il_check_stuck_queue(struct il_priv *il, int cnt)
+{
+ struct il_tx_queue *txq = &il->txq[cnt];
+ struct il_queue *q = &txq->q;
+ unsigned long timeout;
+ int ret;
+
+ if (q->read_ptr == q->write_ptr) {
+ txq->time_stamp = jiffies;
+ return 0;
+ }
+
+ timeout = txq->time_stamp +
+ msecs_to_jiffies(il->cfg->base_params->wd_timeout);
+
+ if (time_after(jiffies, timeout)) {
+ IL_ERR("Queue %d stuck for %u ms.\n",
+ q->id, il->cfg->base_params->wd_timeout);
+ ret = il_force_reset(il, false);
+ return (ret == -EAGAIN) ? 0 : 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Making watchdog tick be a quarter of timeout assure we will
+ * discover the queue hung between timeout and 1.25*timeout
+ */
+#define IL_WD_TICK(timeout) ((timeout) / 4)
+
+/*
+ * Watchdog timer callback, we check each tx queue for stuck, if if hung
+ * we reset the firmware. If everything is fine just rearm the timer.
+ */
+void il_bg_watchdog(unsigned long data)
+{
+ struct il_priv *il = (struct il_priv *)data;
+ int cnt;
+ unsigned long timeout;
+
+ if (test_bit(S_EXIT_PENDING, &il->status))
+ return;
+
+ timeout = il->cfg->base_params->wd_timeout;
+ if (timeout == 0)
+ return;
+
+ /* monitor and check for stuck cmd queue */
+ if (il_check_stuck_queue(il, il->cmd_queue))
+ return;
+
+ /* monitor and check for other stuck queues */
+ if (il_is_any_associated(il)) {
+ for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
+ /* skip as we already checked the command queue */
+ if (cnt == il->cmd_queue)
+ continue;
+ if (il_check_stuck_queue(il, cnt))
+ return;
+ }
+ }
+
+ mod_timer(&il->watchdog, jiffies +
+ msecs_to_jiffies(IL_WD_TICK(timeout)));
+}
+EXPORT_SYMBOL(il_bg_watchdog);
+
+void il_setup_watchdog(struct il_priv *il)
+{
+ unsigned int timeout = il->cfg->base_params->wd_timeout;
+
+ if (timeout)
+ mod_timer(&il->watchdog,
+ jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
+ else
+ del_timer(&il->watchdog);
+}
+EXPORT_SYMBOL(il_setup_watchdog);
+
+/*
+ * extended beacon time format
+ * time in usec will be changed into a 32-bit value in extended:internal format
+ * the extended part is the beacon counts
+ * the internal part is the time in usec within one beacon interval
+ */
+u32
+il_usecs_to_beacons(struct il_priv *il,
+ u32 usec, u32 beacon_interval)
+{
+ u32 quot;
+ u32 rem;
+ u32 interval = beacon_interval * TIME_UNIT;
+
+ if (!interval || !usec)
+ return 0;
+
+ quot = (usec / interval) &
+ (il_beacon_time_mask_high(il,
+ il->hw_params.beacon_time_tsf_bits) >>
+ il->hw_params.beacon_time_tsf_bits);
+ rem = (usec % interval) & il_beacon_time_mask_low(il,
+ il->hw_params.beacon_time_tsf_bits);
+
+ return (quot << il->hw_params.beacon_time_tsf_bits) + rem;
+}
+EXPORT_SYMBOL(il_usecs_to_beacons);
+
+/* base is usually what we get from ucode with each received frame,
+ * the same as HW timer counter counting down
+ */
+__le32 il_add_beacon_time(struct il_priv *il, u32 base,
+ u32 addon, u32 beacon_interval)
+{
+ u32 base_low = base & il_beacon_time_mask_low(il,
+ il->hw_params.beacon_time_tsf_bits);
+ u32 addon_low = addon & il_beacon_time_mask_low(il,
+ il->hw_params.beacon_time_tsf_bits);
+ u32 interval = beacon_interval * TIME_UNIT;
+ u32 res = (base & il_beacon_time_mask_high(il,
+ il->hw_params.beacon_time_tsf_bits)) +
+ (addon & il_beacon_time_mask_high(il,
+ il->hw_params.beacon_time_tsf_bits));
+
+ if (base_low > addon_low)
+ res += base_low - addon_low;
+ else if (base_low < addon_low) {
+ res += interval + base_low - addon_low;
+ res += (1 << il->hw_params.beacon_time_tsf_bits);
+ } else
+ res += (1 << il->hw_params.beacon_time_tsf_bits);
+
+ return cpu_to_le32(res);
+}
+EXPORT_SYMBOL(il_add_beacon_time);
+
+#ifdef CONFIG_PM
+
+int il_pci_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct il_priv *il = pci_get_drvdata(pdev);
+
+ /*
+ * This function is called when system goes into suspend state
+ * mac80211 will call il_mac_stop() from the mac80211 suspend function
+ * first but since il_mac_stop() has no knowledge of who the caller is,
+ * it will not call apm_ops.stop() to stop the DMA operation.
+ * Calling apm_ops.stop here to make sure we stop the DMA.
+ */
+ il_apm_stop(il);
+
+ return 0;
+}
+EXPORT_SYMBOL(il_pci_suspend);
+
+int il_pci_resume(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct il_priv *il = pci_get_drvdata(pdev);
+ bool hw_rfkill = false;
+
+ /*
+ * We disable the RETRY_TIMEOUT register (0x41) to keep
+ * PCI Tx retries from interfering with C3 CPU state.
+ */
+ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
+
+ il_enable_interrupts(il);
+
+ if (!(_il_rd(il, CSR_GP_CNTRL) &
+ CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
+ hw_rfkill = true;
+
+ if (hw_rfkill)
+ set_bit(S_RF_KILL_HW, &il->status);
+ else
+ clear_bit(S_RF_KILL_HW, &il->status);
+
+ wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill);
+
+ return 0;
+}
+EXPORT_SYMBOL(il_pci_resume);
+
+const struct dev_pm_ops il_pm_ops = {
+ .suspend = il_pci_suspend,
+ .resume = il_pci_resume,
+ .freeze = il_pci_suspend,
+ .thaw = il_pci_resume,
+ .poweroff = il_pci_suspend,
+ .restore = il_pci_resume,
+};
+EXPORT_SYMBOL(il_pm_ops);
+
+#endif /* CONFIG_PM */
+
+static void
+il_update_qos(struct il_priv *il, struct il_rxon_context *ctx)
+{
+ if (test_bit(S_EXIT_PENDING, &il->status))
+ return;
+
+ if (!ctx->is_active)
+ return;
+
+ ctx->qos_data.def_qos_parm.qos_flags = 0;
+
+ if (ctx->qos_data.qos_active)
+ ctx->qos_data.def_qos_parm.qos_flags |=
+ QOS_PARAM_FLG_UPDATE_EDCA_MSK;
+
+ if (ctx->ht.enabled)
+ ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
+
+ D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
+ ctx->qos_data.qos_active,
+ ctx->qos_data.def_qos_parm.qos_flags);
+
+ il_send_cmd_pdu_async(il, ctx->qos_cmd,
+ sizeof(struct il_qosparam_cmd),
+ &ctx->qos_data.def_qos_parm, NULL);
+}
+
+/**
+ * il_mac_config - mac80211 config callback
+ */
+int il_mac_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct il_priv *il = hw->priv;
+ const struct il_channel_info *ch_info;
+ struct ieee80211_conf *conf = &hw->conf;
+ struct ieee80211_channel *channel = conf->channel;
+ struct il_ht_config *ht_conf = &il->current_ht_config;
+ struct il_rxon_context *ctx = &il->ctx;
+ unsigned long flags = 0;
+ int ret = 0;
+ u16 ch;
+ int scan_active = 0;
+ bool ht_changed = false;
+
+ if (WARN_ON(!il->cfg->ops->legacy))
+ return -EOPNOTSUPP;
+
+ mutex_lock(&il->mutex);
+
+ D_MAC80211("enter to channel %d changed 0x%X\n",
+ channel->hw_value, changed);
+
+ if (unlikely(test_bit(S_SCANNING, &il->status))) {
+ scan_active = 1;
+ D_MAC80211("scan active\n");
+ }
+
+ if (changed & (IEEE80211_CONF_CHANGE_SMPS |
+ IEEE80211_CONF_CHANGE_CHANNEL)) {
+ /* mac80211 uses static for non-HT which is what we want */
+ il->current_ht_config.smps = conf->smps_mode;
+
+ /*
+ * Recalculate chain counts.
+ *
+ * If monitor mode is enabled then mac80211 will
+ * set up the SM PS mode to OFF if an HT channel is
+ * configured.
+ */
+ if (il->cfg->ops->hcmd->set_rxon_chain)
+ il->cfg->ops->hcmd->set_rxon_chain(il, &il->ctx);
+ }
+
+ /* during scanning mac80211 will delay channel setting until
+ * scan finish with changed = 0
+ */
+ if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
+
+ if (scan_active)
+ goto set_ch_out;
+
+ ch = channel->hw_value;
+ ch_info = il_get_channel_info(il, channel->band, ch);
+ if (!il_is_channel_valid(ch_info)) {
+ D_MAC80211("leave - invalid channel\n");
+ ret = -EINVAL;
+ goto set_ch_out;
+ }
+
+ if (il->iw_mode == NL80211_IFTYPE_ADHOC &&
+ !il_is_channel_ibss(ch_info)) {
+ D_MAC80211("leave - not IBSS channel\n");
+ ret = -EINVAL;
+ goto set_ch_out;
+ }
+
+ spin_lock_irqsave(&il->lock, flags);
+
+ /* Configure HT40 channels */
+ if (ctx->ht.enabled != conf_is_ht(conf)) {
+ ctx->ht.enabled = conf_is_ht(conf);
+ ht_changed = true;
+ }
+ if (ctx->ht.enabled) {
+ if (conf_is_ht40_minus(conf)) {
+ ctx->ht.extension_chan_offset =
+ IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ ctx->ht.is_40mhz = true;
+ } else if (conf_is_ht40_plus(conf)) {
+ ctx->ht.extension_chan_offset =
+ IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+ ctx->ht.is_40mhz = true;
+ } else {
+ ctx->ht.extension_chan_offset =
+ IEEE80211_HT_PARAM_CHA_SEC_NONE;
+ ctx->ht.is_40mhz = false;
+ }
+ } else
+ ctx->ht.is_40mhz = false;
+
+ /*
+ * Default to no protection. Protection mode will
+ * later be set from BSS config in il_ht_conf
+ */
+ ctx->ht.protection =
+ IEEE80211_HT_OP_MODE_PROTECTION_NONE;
+
+ /* 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(ctx->staging.channel) != ch))
+ ctx->staging.flags = 0;
+
+ il_set_rxon_channel(il, channel, ctx);
+ il_set_rxon_ht(il, ht_conf);
+
+ il_set_flags_for_band(il, ctx, channel->band,
+ ctx->vif);
+
+ spin_unlock_irqrestore(&il->lock, flags);
+
+ if (il->cfg->ops->legacy->update_bcast_stations)
+ ret =
+ il->cfg->ops->legacy->update_bcast_stations(il);
+
+ set_ch_out:
+ /* 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 */
+ il_set_rate(il);
+ }
+
+ if (changed & (IEEE80211_CONF_CHANGE_PS |
+ IEEE80211_CONF_CHANGE_IDLE)) {
+ ret = il_power_update_mode(il, false);
+ if (ret)
+ D_MAC80211("Error setting sleep level\n");
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_POWER) {
+ D_MAC80211("TX Power old=%d new=%d\n",
+ il->tx_power_user_lmt, conf->power_level);
+
+ il_set_tx_power(il, conf->power_level, false);
+ }
+
+ if (!il_is_ready(il)) {
+ D_MAC80211("leave - not ready\n");
+ goto out;
+ }
+
+ if (scan_active)
+ goto out;
+
+ if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
+ il_commit_rxon(il, ctx);
+ else
+ D_INFO("Not re-sending same RXON configuration.\n");
+ if (ht_changed)
+ il_update_qos(il, ctx);
+
+out:
+ D_MAC80211("leave\n");
+ mutex_unlock(&il->mutex);
+ return ret;
+}
+EXPORT_SYMBOL(il_mac_config);
+
+void il_mac_reset_tsf(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct il_priv *il = hw->priv;
+ unsigned long flags;
+ struct il_rxon_context *ctx = &il->ctx;
+
+ if (WARN_ON(!il->cfg->ops->legacy))
+ return;
+
+ mutex_lock(&il->mutex);
+ D_MAC80211("enter\n");
+
+ spin_lock_irqsave(&il->lock, flags);
+ memset(&il->current_ht_config, 0, sizeof(struct il_ht_config));
+ spin_unlock_irqrestore(&il->lock, flags);
+
+ spin_lock_irqsave(&il->lock, flags);
+
+ /* new association get rid of ibss beacon skb */
+ if (il->beacon_skb)
+ dev_kfree_skb(il->beacon_skb);
+
+ il->beacon_skb = NULL;
+
+ il->timestamp = 0;
+
+ spin_unlock_irqrestore(&il->lock, flags);
+
+ il_scan_cancel_timeout(il, 100);
+ if (!il_is_ready_rf(il)) {
+ D_MAC80211("leave - not ready\n");
+ mutex_unlock(&il->mutex);
+ return;
+ }
+
+ /* we are restarting association process
+ * clear RXON_FILTER_ASSOC_MSK bit
+ */
+ ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ il_commit_rxon(il, ctx);
+
+ il_set_rate(il);
+
+ mutex_unlock(&il->mutex);
+
+ D_MAC80211("leave\n");
+}
+EXPORT_SYMBOL(il_mac_reset_tsf);
+
+static void il_ht_conf(struct il_priv *il,
+ struct ieee80211_vif *vif)
+{
+ struct il_ht_config *ht_conf = &il->current_ht_config;
+ struct ieee80211_sta *sta;
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+
+ D_ASSOC("enter:\n");
+
+ if (!ctx->ht.enabled)
+ return;
+
+ ctx->ht.protection =
+ bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
+ ctx->ht.non_gf_sta_present =
+ !!(bss_conf->ht_operation_mode &
+ IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
+
+ ht_conf->single_chain_sufficient = false;
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ rcu_read_lock();
+ sta = ieee80211_find_sta(vif, bss_conf->bssid);
+ if (sta) {
+ struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
+ int maxstreams;
+
+ maxstreams = (ht_cap->mcs.tx_params &
+ IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
+ >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
+ maxstreams += 1;
+
+ if (ht_cap->mcs.rx_mask[1] == 0 &&
+ ht_cap->mcs.rx_mask[2] == 0)
+ ht_conf->single_chain_sufficient = true;
+ if (maxstreams <= 1)
+ ht_conf->single_chain_sufficient = true;
+ } else {
+ /*
+ * If at all, this can only happen through a race
+ * when the AP disconnects us while we're still
+ * setting up the connection, in that case mac80211
+ * will soon tell us about that.
+ */
+ ht_conf->single_chain_sufficient = true;
+ }
+ rcu_read_unlock();
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ht_conf->single_chain_sufficient = true;
+ break;
+ default:
+ break;
+ }
+
+ D_ASSOC("leave\n");
+}
+
+static inline void il_set_no_assoc(struct il_priv *il,
+ struct ieee80211_vif *vif)
+{
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+
+ /*
+ * inform the ucode that there is no longer an
+ * association and that no more packets should be
+ * sent
+ */
+ ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ ctx->staging.assoc_id = 0;
+ il_commit_rxon(il, ctx);
+}
+
+static void il_beacon_update(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct il_priv *il = hw->priv;
+ unsigned long flags;
+ __le64 timestamp;
+ struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
+
+ if (!skb)
+ return;
+
+ D_MAC80211("enter\n");
+
+ lockdep_assert_held(&il->mutex);
+
+ if (!il->beacon_ctx) {
+ IL_ERR("update beacon but no beacon context!\n");
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ spin_lock_irqsave(&il->lock, flags);
+
+ if (il->beacon_skb)
+ dev_kfree_skb(il->beacon_skb);
+
+ il->beacon_skb = skb;
+
+ timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
+ il->timestamp = le64_to_cpu(timestamp);
+
+ D_MAC80211("leave\n");
+ spin_unlock_irqrestore(&il->lock, flags);
+
+ if (!il_is_ready_rf(il)) {
+ D_MAC80211("leave - RF not ready\n");
+ return;
+ }
+
+ il->cfg->ops->legacy->post_associate(il);
+}
+
+void il_mac_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changes)
+{
+ struct il_priv *il = hw->priv;
+ struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
+ int ret;
+
+ if (WARN_ON(!il->cfg->ops->legacy))
+ return;
+
+ D_MAC80211("changes = 0x%X\n", changes);
+
+ mutex_lock(&il->mutex);
+
+ if (!il_is_alive(il)) {
+ mutex_unlock(&il->mutex);
+ return;
+ }
+
+ if (changes & BSS_CHANGED_QOS) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&il->lock, flags);
+ ctx->qos_data.qos_active = bss_conf->qos;
+ il_update_qos(il, ctx);
+ spin_unlock_irqrestore(&il->lock, flags);
+ }
+
+ if (changes & BSS_CHANGED_BEACON_ENABLED) {
+ /*
+ * the add_interface code must make sure we only ever
+ * have a single interface that could be beaconing at
+ * any time.
+ */
+ if (vif->bss_conf.enable_beacon)
+ il->beacon_ctx = ctx;
+ else
+ il->beacon_ctx = NULL;
+ }
+
+ if (changes & BSS_CHANGED_BSSID) {
+ D_MAC80211("BSSID %pM\n", bss_conf->bssid);
+
+ /*
+ * If there is currently a HW scan going on in the
+ * background then we need to cancel it else the RXON
+ * below/in post_associate will fail.
+ */
+ if (il_scan_cancel_timeout(il, 100)) {
+ IL_WARN(
+ "Aborted scan still in progress after 100ms\n");
+ D_MAC80211(
+ "leaving - scan abort failed.\n");
+ mutex_unlock(&il->mutex);
+ return;
+ }
+
+ /* mac80211 only sets assoc when in STATION mode */
+ if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
+ memcpy(ctx->staging.bssid_addr,
+ bss_conf->bssid, ETH_ALEN);
+
+ /* currently needed in a few places */
+ memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
+ } else {
+ ctx->staging.filter_flags &=
+ ~RXON_FILTER_ASSOC_MSK;
+ }
+
+ }
+
+ /*
+ * This needs to be after setting the BSSID in case
+ * mac80211 decides to do both changes at once because
+ * it will invoke post_associate.
+ */
+ if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON))
+ il_beacon_update(hw, vif);
+
+ if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+ D_MAC80211("ERP_PREAMBLE %d\n",
+ bss_conf->use_short_preamble);
+ if (bss_conf->use_short_preamble)
+ ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+ else
+ ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+ }
+
+ if (changes & BSS_CHANGED_ERP_CTS_PROT) {
+ D_MAC80211(
+ "ERP_CTS %d\n", bss_conf->use_cts_prot);
+ if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ)
+ ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
+ else
+ ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
+ if (bss_conf->use_cts_prot)
+ ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
+ else
+ ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
+ }
+
+ if (changes & BSS_CHANGED_BASIC_RATES) {
+ /* XXX use this information
+ *
+ * To do that, remove code from il_set_rate() and put something
+ * like this here:
+ *
+ if (A-band)
+ ctx->staging.ofdm_basic_rates =
+ bss_conf->basic_rates;
+ else
+ ctx->staging.ofdm_basic_rates =
+ bss_conf->basic_rates >> 4;
+ ctx->staging.cck_basic_rates =
+ bss_conf->basic_rates & 0xF;
+ */
+ }
+
+ if (changes & BSS_CHANGED_HT) {
+ il_ht_conf(il, vif);
+
+ if (il->cfg->ops->hcmd->set_rxon_chain)
+ il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
+ }
+
+ if (changes & BSS_CHANGED_ASSOC) {
+ D_MAC80211("ASSOC %d\n", bss_conf->assoc);
+ if (bss_conf->assoc) {
+ il->timestamp = bss_conf->timestamp;
+
+ if (!il_is_rfkill(il))
+ il->cfg->ops->legacy->post_associate(il);
+ } else
+ il_set_no_assoc(il, vif);
+ }
+
+ if (changes && il_is_associated_ctx(ctx) && bss_conf->aid) {
+ D_MAC80211("Changes (%#x) while associated\n",
+ changes);
+ ret = il_send_rxon_assoc(il, ctx);
+ if (!ret) {
+ /* Sync active_rxon with latest change. */
+ memcpy((void *)&ctx->active,
+ &ctx->staging,
+ sizeof(struct il_rxon_cmd));
+ }
+ }
+
+ if (changes & BSS_CHANGED_BEACON_ENABLED) {
+ if (vif->bss_conf.enable_beacon) {
+ memcpy(ctx->staging.bssid_addr,
+ bss_conf->bssid, ETH_ALEN);
+ memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
+ il->cfg->ops->legacy->config_ap(il);
+ } else
+ il_set_no_assoc(il, vif);
+ }
+
+ if (changes & BSS_CHANGED_IBSS) {
+ ret = il->cfg->ops->legacy->manage_ibss_station(il, vif,
+ bss_conf->ibss_joined);
+ if (ret)
+ IL_ERR("failed to %s IBSS station %pM\n",
+ bss_conf->ibss_joined ? "add" : "remove",
+ bss_conf->bssid);
+ }
+
+ mutex_unlock(&il->mutex);
+
+ D_MAC80211("leave\n");
+}
+EXPORT_SYMBOL(il_mac_bss_info_changed);
+
+irqreturn_t il_isr(int irq, void *data)
+{
+ struct il_priv *il = data;
+ u32 inta, inta_mask;
+ u32 inta_fh;
+ unsigned long flags;
+ if (!il)
+ return IRQ_NONE;
+
+ spin_lock_irqsave(&il->lock, flags);
+
+ /* 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 = _il_rd(il, CSR_INT_MASK); /* just for debug */
+ _il_wr(il, CSR_INT_MASK, 0x00000000);
+
+ /* Discover which interrupts are active/pending */
+ inta = _il_rd(il, CSR_INT);
+ inta_fh = _il_rd(il, 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) {
+ D_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 */
+ IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta);
+ goto unplugged;
+ }
+
+ D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
+ inta, inta_mask, inta_fh);
+
+ inta &= ~CSR_INT_BIT_SCD;
+
+ /* il_irq_tasklet() will service interrupts and re-enable them */
+ if (likely(inta || inta_fh))
+ tasklet_schedule(&il->irq_tasklet);
+
+unplugged:
+ spin_unlock_irqrestore(&il->lock, flags);
+ return IRQ_HANDLED;
+
+none:
+ /* re-enable interrupts here since we don't have anything to service. */
+ /* only Re-enable if disabled by irq */
+ if (test_bit(S_INT_ENABLED, &il->status))
+ il_enable_interrupts(il);
+ spin_unlock_irqrestore(&il->lock, flags);
+ return IRQ_NONE;
+}
+EXPORT_SYMBOL(il_isr);
+
+/*
+ * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
+ * function.
+ */
+void il_tx_cmd_protection(struct il_priv *il,
+ struct ieee80211_tx_info *info,
+ __le16 fc, __le32 *tx_flags)
+{
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
+ *tx_flags |= TX_CMD_FLG_RTS_MSK;
+ *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
+ *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
+
+ if (!ieee80211_is_mgmt(fc))
+ return;
+
+ switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
+ case cpu_to_le16(IEEE80211_STYPE_AUTH):
+ case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
+ case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
+ case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
+ *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
+ *tx_flags |= TX_CMD_FLG_CTS_MSK;
+ break;
+ }
+ } else if (info->control.rates[0].flags &
+ IEEE80211_TX_RC_USE_CTS_PROTECT) {
+ *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
+ *tx_flags |= TX_CMD_FLG_CTS_MSK;
+ *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
+ }
+}
+EXPORT_SYMBOL(il_tx_cmd_protection);
+++ /dev/null
-/******************************************************************************
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * 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.GPL.
- *
- * 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/etherdevice.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <net/mac80211.h>
-
-#include "iwl-eeprom.h"
-#include "iwl-dev.h"
-#include "iwl-debug.h"
-#include "iwl-core.h"
-#include "iwl-io.h"
-#include "iwl-power.h"
-#include "iwl-sta.h"
-#include "iwl-helpers.h"
-
-
-MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
-MODULE_VERSION(IWLWIFI_VERSION);
-MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
-MODULE_LICENSE("GPL");
-
-/*
- * 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)
- */
-static bool bt_coex_active = true;
-module_param(bt_coex_active, bool, S_IRUGO);
-MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
-
-u32 il_debug_level;
-EXPORT_SYMBOL(il_debug_level);
-
-const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
-EXPORT_SYMBOL(il_bcast_addr);
-
-
-/* This function both allocates and initializes hw and il. */
-struct ieee80211_hw *il_alloc_all(struct il_cfg *cfg)
-{
- struct il_priv *il;
- /* mac80211 allocates memory for this device instance, including
- * space for this driver's ilate structure */
- struct ieee80211_hw *hw;
-
- hw = ieee80211_alloc_hw(sizeof(struct il_priv),
- cfg->ops->ieee80211_ops);
- if (hw == NULL) {
- pr_err("%s: Can not allocate network device\n",
- cfg->name);
- goto out;
- }
-
- il = hw->priv;
- il->hw = hw;
-
-out:
- return hw;
-}
-EXPORT_SYMBOL(il_alloc_all);
-
-#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
-#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
-static void il_init_ht_hw_capab(const struct il_priv *il,
- struct ieee80211_sta_ht_cap *ht_info,
- enum ieee80211_band band)
-{
- u16 max_bit_rate = 0;
- u8 rx_chains_num = il->hw_params.rx_chains_num;
- u8 tx_chains_num = il->hw_params.tx_chains_num;
-
- ht_info->cap = 0;
- memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
-
- ht_info->ht_supported = true;
-
- ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
- max_bit_rate = MAX_BIT_RATE_20_MHZ;
- if (il->hw_params.ht40_channel & BIT(band)) {
- ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
- ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
- ht_info->mcs.rx_mask[4] = 0x01;
- max_bit_rate = MAX_BIT_RATE_40_MHZ;
- }
-
- if (il->cfg->mod_params->amsdu_size_8K)
- ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
-
- ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
- ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
-
- ht_info->mcs.rx_mask[0] = 0xFF;
- if (rx_chains_num >= 2)
- ht_info->mcs.rx_mask[1] = 0xFF;
- if (rx_chains_num >= 3)
- ht_info->mcs.rx_mask[2] = 0xFF;
-
- /* Highest supported Rx data rate */
- max_bit_rate *= rx_chains_num;
- WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
- ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
-
- /* Tx MCS capabilities */
- ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
- if (tx_chains_num != rx_chains_num) {
- ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
- ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
- IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
- }
-}
-
-/**
- * il_init_geos - Initialize mac80211's geo/channel info based from eeprom
- */
-int il_init_geos(struct il_priv *il)
-{
- struct il_channel_info *ch;
- struct ieee80211_supported_band *sband;
- struct ieee80211_channel *channels;
- struct ieee80211_channel *geo_ch;
- struct ieee80211_rate *rates;
- int i = 0;
- s8 max_tx_power = 0;
-
- if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
- il->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
- D_INFO("Geography modes already initialized.\n");
- set_bit(S_GEO_CONFIGURED, &il->status);
- return 0;
- }
-
- channels = kzalloc(sizeof(struct ieee80211_channel) *
- il->channel_count, GFP_KERNEL);
- if (!channels)
- return -ENOMEM;
-
- rates = kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY),
- GFP_KERNEL);
- if (!rates) {
- kfree(channels);
- return -ENOMEM;
- }
-
- /* 5.2GHz channels start after the 2.4GHz channels */
- sband = &il->bands[IEEE80211_BAND_5GHZ];
- sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)];
- /* just OFDM */
- sband->bitrates = &rates[IL_FIRST_OFDM_RATE];
- sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE;
-
- if (il->cfg->sku & IL_SKU_N)
- il_init_ht_hw_capab(il, &sband->ht_cap,
- IEEE80211_BAND_5GHZ);
-
- sband = &il->bands[IEEE80211_BAND_2GHZ];
- sband->channels = channels;
- /* OFDM & CCK */
- sband->bitrates = rates;
- sband->n_bitrates = RATE_COUNT_LEGACY;
-
- if (il->cfg->sku & IL_SKU_N)
- il_init_ht_hw_capab(il, &sband->ht_cap,
- IEEE80211_BAND_2GHZ);
-
- il->ieee_channels = channels;
- il->ieee_rates = rates;
-
- for (i = 0; i < il->channel_count; i++) {
- ch = &il->channel_info[i];
-
- if (!il_is_channel_valid(ch))
- continue;
-
- sband = &il->bands[ch->band];
-
- geo_ch = &sband->channels[sband->n_channels++];
-
- geo_ch->center_freq =
- ieee80211_channel_to_frequency(ch->channel, ch->band);
- geo_ch->max_power = ch->max_power_avg;
- geo_ch->max_antenna_gain = 0xff;
- geo_ch->hw_value = ch->channel;
-
- if (il_is_channel_valid(ch)) {
- if (!(ch->flags & EEPROM_CHANNEL_IBSS))
- geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
-
- if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
- geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
-
- if (ch->flags & EEPROM_CHANNEL_RADAR)
- geo_ch->flags |= IEEE80211_CHAN_RADAR;
-
- geo_ch->flags |= ch->ht40_extension_channel;
-
- if (ch->max_power_avg > max_tx_power)
- max_tx_power = ch->max_power_avg;
- } else {
- geo_ch->flags |= IEEE80211_CHAN_DISABLED;
- }
-
- D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
- ch->channel, geo_ch->center_freq,
- il_is_channel_a_band(ch) ? "5.2" : "2.4",
- geo_ch->flags & IEEE80211_CHAN_DISABLED ?
- "restricted" : "valid",
- geo_ch->flags);
- }
-
- il->tx_power_device_lmt = max_tx_power;
- il->tx_power_user_lmt = max_tx_power;
- il->tx_power_next = max_tx_power;
-
- if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 &&
- (il->cfg->sku & IL_SKU_A)) {
- IL_INFO("Incorrectly detected BG card as ABG. "
- "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
- il->pci_dev->device,
- il->pci_dev->subsystem_device);
- il->cfg->sku &= ~IL_SKU_A;
- }
-
- IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n",
- il->bands[IEEE80211_BAND_2GHZ].n_channels,
- il->bands[IEEE80211_BAND_5GHZ].n_channels);
-
- set_bit(S_GEO_CONFIGURED, &il->status);
-
- return 0;
-}
-EXPORT_SYMBOL(il_init_geos);
-
-/*
- * il_free_geos - undo allocations in il_init_geos
- */
-void il_free_geos(struct il_priv *il)
-{
- kfree(il->ieee_channels);
- kfree(il->ieee_rates);
- clear_bit(S_GEO_CONFIGURED, &il->status);
-}
-EXPORT_SYMBOL(il_free_geos);
-
-static bool il_is_channel_extension(struct il_priv *il,
- enum ieee80211_band band,
- u16 channel, u8 extension_chan_offset)
-{
- const struct il_channel_info *ch_info;
-
- ch_info = il_get_channel_info(il, band, channel);
- if (!il_is_channel_valid(ch_info))
- return false;
-
- if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
- return !(ch_info->ht40_extension_channel &
- IEEE80211_CHAN_NO_HT40PLUS);
- else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
- return !(ch_info->ht40_extension_channel &
- IEEE80211_CHAN_NO_HT40MINUS);
-
- return false;
-}
-
-bool il_is_ht40_tx_allowed(struct il_priv *il,
- struct il_rxon_context *ctx,
- struct ieee80211_sta_ht_cap *ht_cap)
-{
- if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
- return false;
-
- /*
- * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
- * the bit will not set if it is pure 40MHz case
- */
- if (ht_cap && !ht_cap->ht_supported)
- return false;
-
-#ifdef CONFIG_IWLEGACY_DEBUGFS
- if (il->disable_ht40)
- return false;
-#endif
-
- return il_is_channel_extension(il, il->band,
- le16_to_cpu(ctx->staging.channel),
- ctx->ht.extension_chan_offset);
-}
-EXPORT_SYMBOL(il_is_ht40_tx_allowed);
-
-static u16 il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
-{
- u16 new_val;
- u16 beacon_factor;
-
- /*
- * If mac80211 hasn't given us a beacon interval, program
- * the default into the device.
- */
- if (!beacon_val)
- return DEFAULT_BEACON_INTERVAL;
-
- /*
- * If the beacon interval we obtained from the peer
- * is too large, we'll have to wake up more often
- * (and in IBSS case, we'll beacon too much)
- *
- * For example, if max_beacon_val is 4096, and the
- * requested beacon interval is 7000, we'll have to
- * use 3500 to be able to wake up on the beacons.
- *
- * This could badly influence beacon detection stats.
- */
-
- beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
- new_val = beacon_val / beacon_factor;
-
- if (!new_val)
- new_val = max_beacon_val;
-
- return new_val;
-}
-
-int
-il_send_rxon_timing(struct il_priv *il, struct il_rxon_context *ctx)
-{
- u64 tsf;
- s32 interval_tm, rem;
- struct ieee80211_conf *conf = NULL;
- u16 beacon_int;
- struct ieee80211_vif *vif = ctx->vif;
-
- conf = il_ieee80211_get_hw_conf(il->hw);
-
- lockdep_assert_held(&il->mutex);
-
- memset(&ctx->timing, 0, sizeof(struct il_rxon_time_cmd));
-
- ctx->timing.timestamp = cpu_to_le64(il->timestamp);
- ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
-
- beacon_int = vif ? vif->bss_conf.beacon_int : 0;
-
- /*
- * TODO: For IBSS we need to get atim_win from mac80211,
- * for now just always use 0
- */
- ctx->timing.atim_win = 0;
-
- beacon_int = il_adjust_beacon_interval(beacon_int,
- il->hw_params.max_beacon_itrvl * TIME_UNIT);
- ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
-
- tsf = il->timestamp; /* tsf is modifed by do_div: copy it */
- interval_tm = beacon_int * TIME_UNIT;
- rem = do_div(tsf, interval_tm);
- ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
-
- ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
-
- D_ASSOC(
- "beacon interval %d beacon timer %d beacon tim %d\n",
- le16_to_cpu(ctx->timing.beacon_interval),
- le32_to_cpu(ctx->timing.beacon_init_val),
- le16_to_cpu(ctx->timing.atim_win));
-
- return il_send_cmd_pdu(il, ctx->rxon_timing_cmd,
- sizeof(ctx->timing), &ctx->timing);
-}
-EXPORT_SYMBOL(il_send_rxon_timing);
-
-void
-il_set_rxon_hwcrypto(struct il_priv *il,
- struct il_rxon_context *ctx,
- int hw_decrypt)
-{
- struct il_rxon_cmd *rxon = &ctx->staging;
-
- if (hw_decrypt)
- rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
- else
- rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
-
-}
-EXPORT_SYMBOL(il_set_rxon_hwcrypto);
-
-/* validate RXON structure is valid */
-int
-il_check_rxon_cmd(struct il_priv *il, struct il_rxon_context *ctx)
-{
- struct il_rxon_cmd *rxon = &ctx->staging;
- bool error = false;
-
- if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
- if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
- IL_WARN("check 2.4G: wrong narrow\n");
- error = true;
- }
- if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
- IL_WARN("check 2.4G: wrong radar\n");
- error = true;
- }
- } else {
- if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
- IL_WARN("check 5.2G: not short slot!\n");
- error = true;
- }
- if (rxon->flags & RXON_FLG_CCK_MSK) {
- IL_WARN("check 5.2G: CCK!\n");
- error = true;
- }
- }
- if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
- IL_WARN("mac/bssid mcast!\n");
- error = true;
- }
-
- /* make sure basic rates 6Mbps and 1Mbps are supported */
- if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 &&
- (rxon->cck_basic_rates & RATE_1M_MASK) == 0) {
- IL_WARN("neither 1 nor 6 are basic\n");
- error = true;
- }
-
- if (le16_to_cpu(rxon->assoc_id) > 2007) {
- IL_WARN("aid > 2007\n");
- error = true;
- }
-
- if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
- == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
- IL_WARN("CCK and short slot\n");
- error = true;
- }
-
- if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
- == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
- IL_WARN("CCK and auto detect");
- error = true;
- }
-
- if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
- RXON_FLG_TGG_PROTECT_MSK)) ==
- RXON_FLG_TGG_PROTECT_MSK) {
- IL_WARN("TGg but no auto-detect\n");
- error = true;
- }
-
- if (error)
- IL_WARN("Tuning to channel %d\n",
- le16_to_cpu(rxon->channel));
-
- if (error) {
- IL_ERR("Invalid RXON\n");
- return -EINVAL;
- }
- return 0;
-}
-EXPORT_SYMBOL(il_check_rxon_cmd);
-
-/**
- * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
- * @il: 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.
- */
-int il_full_rxon_required(struct il_priv *il,
- struct il_rxon_context *ctx)
-{
- const struct il_rxon_cmd *staging = &ctx->staging;
- const struct il_rxon_cmd *active = &ctx->active;
-
-#define CHK(cond) \
- if ((cond)) { \
- D_INFO("need full RXON - " #cond "\n"); \
- return 1; \
- }
-
-#define CHK_NEQ(c1, c2) \
- if ((c1) != (c2)) { \
- D_INFO("need full RXON - " \
- #c1 " != " #c2 " - %d != %d\n", \
- (c1), (c2)); \
- return 1; \
- }
-
- /* These items are only settable from the full RXON command */
- CHK(!il_is_associated_ctx(ctx));
- CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
- CHK(compare_ether_addr(staging->node_addr, active->node_addr));
- CHK(compare_ether_addr(staging->wlap_bssid_addr,
- active->wlap_bssid_addr));
- CHK_NEQ(staging->dev_type, active->dev_type);
- CHK_NEQ(staging->channel, active->channel);
- CHK_NEQ(staging->air_propagation, active->air_propagation);
- CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
- active->ofdm_ht_single_stream_basic_rates);
- CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
- active->ofdm_ht_dual_stream_basic_rates);
- CHK_NEQ(staging->assoc_id, active->assoc_id);
-
- /* 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 */
- CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
- active->flags & RXON_FLG_BAND_24G_MSK);
-
- /* Check if we are switching association toggle */
- CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
- active->filter_flags & RXON_FILTER_ASSOC_MSK);
-
-#undef CHK
-#undef CHK_NEQ
-
- return 0;
-}
-EXPORT_SYMBOL(il_full_rxon_required);
-
-u8 il_get_lowest_plcp(struct il_priv *il,
- struct il_rxon_context *ctx)
-{
- /*
- * Assign the lowest rate -- should really get this from
- * the beacon skb from mac80211.
- */
- if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
- return RATE_1M_PLCP;
- else
- return RATE_6M_PLCP;
-}
-EXPORT_SYMBOL(il_get_lowest_plcp);
-
-static void _il_set_rxon_ht(struct il_priv *il,
- struct il_ht_config *ht_conf,
- struct il_rxon_context *ctx)
-{
- struct il_rxon_cmd *rxon = &ctx->staging;
-
- if (!ctx->ht.enabled) {
- rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
- RXON_FLG_HT40_PROT_MSK |
- RXON_FLG_HT_PROT_MSK);
- return;
- }
-
- rxon->flags |= cpu_to_le32(ctx->ht.protection <<
- RXON_FLG_HT_OPERATING_MODE_POS);
-
- /* Set up channel bandwidth:
- * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
- /* clear the HT channel mode before set the mode */
- rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
- if (il_is_ht40_tx_allowed(il, ctx, NULL)) {
- /* pure ht40 */
- if (ctx->ht.protection ==
- IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
- rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
- /* Note: control channel is opposite of extension channel */
- switch (ctx->ht.extension_chan_offset) {
- case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
- rxon->flags &=
- ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- rxon->flags |=
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- break;
- }
- } else {
- /* Note: control channel is opposite of extension channel */
- switch (ctx->ht.extension_chan_offset) {
- case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
- rxon->flags &=
- ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
- rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- rxon->flags |=
- RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
- rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_NONE:
- default:
- /* channel location only valid if in Mixed mode */
- IL_ERR(
- "invalid extension channel offset\n");
- break;
- }
- }
- } else {
- rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
- }
-
- if (il->cfg->ops->hcmd->set_rxon_chain)
- il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
-
- D_ASSOC("rxon flags 0x%X operation mode :0x%X "
- "extension channel offset 0x%x\n",
- le32_to_cpu(rxon->flags), ctx->ht.protection,
- ctx->ht.extension_chan_offset);
-}
-
-void il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf)
-{
- _il_set_rxon_ht(il, ht_conf, &il->ctx);
-}
-EXPORT_SYMBOL(il_set_rxon_ht);
-
-/* Return valid, unused, channel for a passive scan to reset the RF */
-u8 il_get_single_channel_number(struct il_priv *il,
- enum ieee80211_band band)
-{
- const struct il_channel_info *ch_info;
- int i;
- u8 channel = 0;
- u8 min, max;
-
- if (band == IEEE80211_BAND_5GHZ) {
- min = 14;
- max = il->channel_count;
- } else {
- min = 0;
- max = 14;
- }
-
- for (i = min; i < max; i++) {
- channel = il->channel_info[i].channel;
- if (channel == le16_to_cpu(il->ctx.staging.channel))
- continue;
-
- ch_info = il_get_channel_info(il, band, channel);
- if (il_is_channel_valid(ch_info))
- break;
- }
-
- return channel;
-}
-EXPORT_SYMBOL(il_get_single_channel_number);
-
-/**
- * il_set_rxon_channel - Set the band and channel values in staging RXON
- * @ch: requested channel as a pointer to struct ieee80211_channel
-
- * NOTE: Does not commit to the hardware; it sets appropriate bit fields
- * in the staging RXON flag structure based on the ch->band
- */
-int
-il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch,
- struct il_rxon_context *ctx)
-{
- enum ieee80211_band band = ch->band;
- u16 channel = ch->hw_value;
-
- if (le16_to_cpu(ctx->staging.channel) == channel && il->band == band)
- return 0;
-
- ctx->staging.channel = cpu_to_le16(channel);
- if (band == IEEE80211_BAND_5GHZ)
- ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
- else
- ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
-
- il->band = band;
-
- D_INFO("Staging channel set to %d [%d]\n", channel, band);
-
- return 0;
-}
-EXPORT_SYMBOL(il_set_rxon_channel);
-
-void il_set_flags_for_band(struct il_priv *il,
- struct il_rxon_context *ctx,
- enum ieee80211_band band,
- struct ieee80211_vif *vif)
-{
- if (band == IEEE80211_BAND_5GHZ) {
- ctx->staging.flags &=
- ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
- | RXON_FLG_CCK_MSK);
- ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
- } else {
- /* Copied from il_post_associate() */
- if (vif && vif->bss_conf.use_short_slot)
- ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
-
- ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
- ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
- ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
- }
-}
-EXPORT_SYMBOL(il_set_flags_for_band);
-
-/*
- * initialize rxon structure with default values from eeprom
- */
-void il_connection_init_rx_config(struct il_priv *il,
- struct il_rxon_context *ctx)
-{
- const struct il_channel_info *ch_info;
-
- memset(&ctx->staging, 0, sizeof(ctx->staging));
-
- if (!ctx->vif) {
- ctx->staging.dev_type = ctx->unused_devtype;
- } else
- switch (ctx->vif->type) {
-
- case NL80211_IFTYPE_STATION:
- ctx->staging.dev_type = ctx->station_devtype;
- ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
- break;
-
- case NL80211_IFTYPE_ADHOC:
- ctx->staging.dev_type = ctx->ibss_devtype;
- ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
- ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
- RXON_FILTER_ACCEPT_GRP_MSK;
- break;
-
- default:
- IL_ERR("Unsupported interface type %d\n",
- ctx->vif->type);
- break;
- }
-
-#if 0
- /* TODO: Figure out when short_preamble would be set and cache from
- * that */
- if (!hw_to_local(il->hw)->short_preamble)
- ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
- else
- ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
-#endif
-
- ch_info = il_get_channel_info(il, il->band,
- le16_to_cpu(ctx->active.channel));
-
- if (!ch_info)
- ch_info = &il->channel_info[0];
-
- ctx->staging.channel = cpu_to_le16(ch_info->channel);
- il->band = ch_info->band;
-
- il_set_flags_for_band(il, ctx, il->band, ctx->vif);
-
- ctx->staging.ofdm_basic_rates =
- (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
- ctx->staging.cck_basic_rates =
- (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
-
- /* clear both MIX and PURE40 mode flag */
- ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
- RXON_FLG_CHANNEL_MODE_PURE_40);
- if (ctx->vif)
- memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
-
- ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
- ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
-}
-EXPORT_SYMBOL(il_connection_init_rx_config);
-
-void il_set_rate(struct il_priv *il)
-{
- const struct ieee80211_supported_band *hw = NULL;
- struct ieee80211_rate *rate;
- int i;
-
- hw = il_get_hw_mode(il, il->band);
- if (!hw) {
- IL_ERR("Failed to set rate: unable to get hw mode\n");
- return;
- }
-
- il->active_rate = 0;
-
- for (i = 0; i < hw->n_bitrates; i++) {
- rate = &(hw->bitrates[i]);
- if (rate->hw_value < RATE_COUNT_LEGACY)
- il->active_rate |= (1 << rate->hw_value);
- }
-
- D_RATE("Set active_rate = %0x\n", il->active_rate);
-
- il->ctx.staging.cck_basic_rates =
- (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF;
-
- il->ctx.staging.ofdm_basic_rates =
- (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
-}
-EXPORT_SYMBOL(il_set_rate);
-
-void il_chswitch_done(struct il_priv *il, bool is_success)
-{
- struct il_rxon_context *ctx = &il->ctx;
-
- if (test_bit(S_EXIT_PENDING, &il->status))
- return;
-
- if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
- ieee80211_chswitch_done(ctx->vif, is_success);
-}
-EXPORT_SYMBOL(il_chswitch_done);
-
-void il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb)
-{
- struct il_rx_pkt *pkt = rxb_addr(rxb);
- struct il_csa_notification *csa = &(pkt->u.csa_notif);
-
- struct il_rxon_context *ctx = &il->ctx;
- struct il_rxon_cmd *rxon = (void *)&ctx->active;
-
- if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status))
- return;
-
- if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) {
- rxon->channel = csa->channel;
- ctx->staging.channel = csa->channel;
- D_11H("CSA notif: channel %d\n",
- le16_to_cpu(csa->channel));
- il_chswitch_done(il, true);
- } else {
- IL_ERR("CSA notif (fail) : channel %d\n",
- le16_to_cpu(csa->channel));
- il_chswitch_done(il, false);
- }
-}
-EXPORT_SYMBOL(il_hdl_csa);
-
-#ifdef CONFIG_IWLEGACY_DEBUG
-void il_print_rx_config_cmd(struct il_priv *il,
- struct il_rxon_context *ctx)
-{
- struct il_rxon_cmd *rxon = &ctx->staging;
-
- D_RADIO("RX CONFIG:\n");
- il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
- D_RADIO("u16 channel: 0x%x\n",
- le16_to_cpu(rxon->channel));
- D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
- D_RADIO("u32 filter_flags: 0x%08x\n",
- le32_to_cpu(rxon->filter_flags));
- D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
- D_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
- rxon->ofdm_basic_rates);
- D_RADIO("u8 cck_basic_rates: 0x%02x\n",
- rxon->cck_basic_rates);
- D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
- D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
- D_RADIO("u16 assoc_id: 0x%x\n",
- le16_to_cpu(rxon->assoc_id));
-}
-EXPORT_SYMBOL(il_print_rx_config_cmd);
-#endif
-/**
- * il_irq_handle_error - called for HW or SW error interrupt from card
- */
-void il_irq_handle_error(struct il_priv *il)
-{
- /* Set the FW error flag -- cleared on il_down */
- set_bit(S_FW_ERROR, &il->status);
-
- /* Cancel currently queued command. */
- clear_bit(S_HCMD_ACTIVE, &il->status);
-
- IL_ERR("Loaded firmware version: %s\n",
- il->hw->wiphy->fw_version);
-
- il->cfg->ops->lib->dump_nic_error_log(il);
- if (il->cfg->ops->lib->dump_fh)
- il->cfg->ops->lib->dump_fh(il, NULL, false);
-#ifdef CONFIG_IWLEGACY_DEBUG
- if (il_get_debug_level(il) & IL_DL_FW_ERRORS)
- il_print_rx_config_cmd(il,
- &il->ctx);
-#endif
-
- wake_up(&il->wait_command_queue);
-
- /* Keep the restart process from trying to send host
- * commands by clearing the INIT status bit */
- clear_bit(S_READY, &il->status);
-
- if (!test_bit(S_EXIT_PENDING, &il->status)) {
- IL_DBG(IL_DL_FW_ERRORS,
- "Restarting adapter due to uCode error.\n");
-
- if (il->cfg->mod_params->restart_fw)
- queue_work(il->workqueue, &il->restart);
- }
-}
-EXPORT_SYMBOL(il_irq_handle_error);
-
-static int il_apm_stop_master(struct il_priv *il)
-{
- int ret = 0;
-
- /* stop device's busmaster DMA activity */
- il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
-
- ret = _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
- CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
- if (ret)
- IL_WARN("Master Disable Timed Out, 100 usec\n");
-
- D_INFO("stop master\n");
-
- return ret;
-}
-
-void il_apm_stop(struct il_priv *il)
-{
- D_INFO("Stop card, put in low power state\n");
-
- /* Stop device's DMA activity */
- il_apm_stop_master(il);
-
- /* Reset the entire device */
- il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
-
- udelay(10);
-
- /*
- * Clear "initialization complete" bit to move adapter from
- * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
- */
- il_clear_bit(il, CSR_GP_CNTRL,
- CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
-}
-EXPORT_SYMBOL(il_apm_stop);
-
-
-/*
- * Start up NIC's basic functionality after it has been reset
- * (e.g. after platform boot, or shutdown via il_apm_stop())
- * NOTE: This does not load uCode nor start the embedded processor
- */
-int il_apm_init(struct il_priv *il)
-{
- int ret = 0;
- u16 lctl;
-
- D_INFO("Init card's basic functions\n");
-
- /*
- * Use "set_bit" below rather than "write", to preserve any hardware
- * bits already set by default after reset.
- */
-
- /* Disable L0S exit timer (platform NMI Work/Around) */
- il_set_bit(il, CSR_GIO_CHICKEN_BITS,
- CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
-
- /*
- * Disable L0s without affecting L1;
- * don't wait for ICH L0s (ICH bug W/A)
- */
- il_set_bit(il, CSR_GIO_CHICKEN_BITS,
- CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
-
- /* Set FH wait threshold to maximum (HW error during stress W/A) */
- il_set_bit(il, CSR_DBG_HPET_MEM_REG,
- CSR_DBG_HPET_MEM_REG_VAL);
-
- /*
- * Enable HAP INTA (interrupt from management bus) to
- * wake device's PCI Express link L1a -> L0s
- * NOTE: This is no-op for 3945 (non-existent bit)
- */
- il_set_bit(il, CSR_HW_IF_CONFIG_REG,
- CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
-
- /*
- * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
- * Check if BIOS (or OS) enabled L1-ASPM on this device.
- * If so (likely), disable L0S, so device moves directly L0->L1;
- * costs negligible amount of power savings.
- * If not (unlikely), enable L0S, so there is at least some
- * power savings, even without L1.
- */
- if (il->cfg->base_params->set_l0s) {
- lctl = il_pcie_link_ctl(il);
- if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
- PCI_CFG_LINK_CTRL_VAL_L1_EN) {
- /* L1-ASPM enabled; disable(!) L0S */
- il_set_bit(il, CSR_GIO_REG,
- CSR_GIO_REG_VAL_L0S_ENABLED);
- D_POWER("L1 Enabled; Disabling L0S\n");
- } else {
- /* L1-ASPM disabled; enable(!) L0S */
- il_clear_bit(il, CSR_GIO_REG,
- CSR_GIO_REG_VAL_L0S_ENABLED);
- D_POWER("L1 Disabled; Enabling L0S\n");
- }
- }
-
- /* Configure analog phase-lock-loop before activating to D0A */
- if (il->cfg->base_params->pll_cfg_val)
- il_set_bit(il, CSR_ANA_PLL_CFG,
- il->cfg->base_params->pll_cfg_val);
-
- /*
- * Set "initialization complete" bit to move adapter from
- * D0U* --> D0A* (powered-up active) state.
- */
- il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
-
- /*
- * Wait for clock stabilization; once stabilized, access to
- * device-internal resources is supported, e.g. il_wr_prph()
- * and accesses to uCode SRAM.
- */
- ret = _il_poll_bit(il, CSR_GP_CNTRL,
- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
- CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
- if (ret < 0) {
- D_INFO("Failed to init the card\n");
- goto out;
- }
-
- /*
- * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
- * BSM (Boostrap State Machine) is only in 3945 and 4965.
- *
- * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
- * do not disable clocks. This preserves any hardware bits already
- * set by default in "CLK_CTRL_REG" after reset.
- */
- if (il->cfg->base_params->use_bsm)
- il_wr_prph(il, APMG_CLK_EN_REG,
- APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
- else
- il_wr_prph(il, APMG_CLK_EN_REG,
- APMG_CLK_VAL_DMA_CLK_RQT);
- udelay(20);
-
- /* Disable L1-Active */
- il_set_bits_prph(il, APMG_PCIDEV_STT_REG,
- APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
-
-out:
- return ret;
-}
-EXPORT_SYMBOL(il_apm_init);
-
-
-int il_set_tx_power(struct il_priv *il, s8 tx_power, bool force)
-{
- int ret;
- s8 prev_tx_power;
- bool defer;
- struct il_rxon_context *ctx = &il->ctx;
-
- lockdep_assert_held(&il->mutex);
-
- if (il->tx_power_user_lmt == tx_power && !force)
- return 0;
-
- if (!il->cfg->ops->lib->send_tx_power)
- return -EOPNOTSUPP;
-
- /* 0 dBm mean 1 milliwatt */
- if (tx_power < 0) {
- IL_WARN(
- "Requested user TXPOWER %d below 1 mW.\n",
- tx_power);
- return -EINVAL;
- }
-
- if (tx_power > il->tx_power_device_lmt) {
- IL_WARN(
- "Requested user TXPOWER %d above upper limit %d.\n",
- tx_power, il->tx_power_device_lmt);
- return -EINVAL;
- }
-
- if (!il_is_ready_rf(il))
- return -EIO;
-
- /* scan complete and commit_rxon use tx_power_next value,
- * it always need to be updated for newest request */
- il->tx_power_next = tx_power;
-
- /* do not set tx power when scanning or channel changing */
- defer = test_bit(S_SCANNING, &il->status) ||
- memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
- if (defer && !force) {
- D_INFO("Deferring tx power set\n");
- return 0;
- }
-
- prev_tx_power = il->tx_power_user_lmt;
- il->tx_power_user_lmt = tx_power;
-
- ret = il->cfg->ops->lib->send_tx_power(il);
-
- /* if fail to set tx_power, restore the orig. tx power */
- if (ret) {
- il->tx_power_user_lmt = prev_tx_power;
- il->tx_power_next = prev_tx_power;
- }
- return ret;
-}
-EXPORT_SYMBOL(il_set_tx_power);
-
-void il_send_bt_config(struct il_priv *il)
-{
- struct il_bt_cmd bt_cmd = {
- .lead_time = BT_LEAD_TIME_DEF,
- .max_kill = BT_MAX_KILL_DEF,
- .kill_ack_mask = 0,
- .kill_cts_mask = 0,
- };
-
- if (!bt_coex_active)
- bt_cmd.flags = BT_COEX_DISABLE;
- else
- bt_cmd.flags = BT_COEX_ENABLE;
-
- D_INFO("BT coex %s\n",
- (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
-
- if (il_send_cmd_pdu(il, C_BT_CONFIG,
- sizeof(struct il_bt_cmd), &bt_cmd))
- IL_ERR("failed to send BT Coex Config\n");
-}
-EXPORT_SYMBOL(il_send_bt_config);
-
-int il_send_stats_request(struct il_priv *il, u8 flags, bool clear)
-{
- struct il_stats_cmd stats_cmd = {
- .configuration_flags =
- clear ? IL_STATS_CONF_CLEAR_STATS : 0,
- };
-
- if (flags & CMD_ASYNC)
- return il_send_cmd_pdu_async(il, C_STATS,
- sizeof(struct il_stats_cmd),
- &stats_cmd, NULL);
- else
- return il_send_cmd_pdu(il, C_STATS,
- sizeof(struct il_stats_cmd),
- &stats_cmd);
-}
-EXPORT_SYMBOL(il_send_stats_request);
-
-void il_hdl_pm_sleep(struct il_priv *il,
- struct il_rx_buf *rxb)
-{
-#ifdef CONFIG_IWLEGACY_DEBUG
- struct il_rx_pkt *pkt = rxb_addr(rxb);
- struct il_sleep_notification *sleep = &(pkt->u.sleep_notif);
- D_RX("sleep mode: %d, src: %d\n",
- sleep->pm_sleep_mode, sleep->pm_wakeup_src);
-#endif
-}
-EXPORT_SYMBOL(il_hdl_pm_sleep);
-
-void il_hdl_pm_debug_stats(struct il_priv *il,
- struct il_rx_buf *rxb)
-{
- struct il_rx_pkt *pkt = rxb_addr(rxb);
- u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
- D_RADIO("Dumping %d bytes of unhandled "
- "notification for %s:\n", len,
- il_get_cmd_string(pkt->hdr.cmd));
- il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len);
-}
-EXPORT_SYMBOL(il_hdl_pm_debug_stats);
-
-void il_hdl_error(struct il_priv *il,
- struct il_rx_buf *rxb)
-{
- struct il_rx_pkt *pkt = rxb_addr(rxb);
-
- IL_ERR("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),
- il_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));
-}
-EXPORT_SYMBOL(il_hdl_error);
-
-void il_clear_isr_stats(struct il_priv *il)
-{
- memset(&il->isr_stats, 0, sizeof(il->isr_stats));
-}
-
-int il_mac_conf_tx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u16 queue,
- const struct ieee80211_tx_queue_params *params)
-{
- struct il_priv *il = hw->priv;
- unsigned long flags;
- int q;
-
- D_MAC80211("enter\n");
-
- if (!il_is_ready_rf(il)) {
- D_MAC80211("leave - RF not ready\n");
- return -EIO;
- }
-
- if (queue >= AC_NUM) {
- D_MAC80211("leave - queue >= AC_NUM %d\n", queue);
- return 0;
- }
-
- q = AC_NUM - 1 - queue;
-
- spin_lock_irqsave(&il->lock, flags);
-
- il->ctx.qos_data.def_qos_parm.ac[q].cw_min =
- cpu_to_le16(params->cw_min);
- il->ctx.qos_data.def_qos_parm.ac[q].cw_max =
- cpu_to_le16(params->cw_max);
- il->ctx.qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
- il->ctx.qos_data.def_qos_parm.ac[q].edca_txop =
- cpu_to_le16((params->txop * 32));
-
- il->ctx.qos_data.def_qos_parm.ac[q].reserved1 = 0;
-
- spin_unlock_irqrestore(&il->lock, flags);
-
- D_MAC80211("leave\n");
- return 0;
-}
-EXPORT_SYMBOL(il_mac_conf_tx);
-
-int il_mac_tx_last_beacon(struct ieee80211_hw *hw)
-{
- struct il_priv *il = hw->priv;
-
- return il->ibss_manager == IL_IBSS_MANAGER;
-}
-EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon);
-
-static int
-il_set_mode(struct il_priv *il, struct il_rxon_context *ctx)
-{
- il_connection_init_rx_config(il, ctx);
-
- if (il->cfg->ops->hcmd->set_rxon_chain)
- il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
-
- return il_commit_rxon(il, ctx);
-}
-
-static int il_setup_interface(struct il_priv *il,
- struct il_rxon_context *ctx)
-{
- struct ieee80211_vif *vif = ctx->vif;
- int err;
-
- lockdep_assert_held(&il->mutex);
-
- /*
- * This variable will be correct only when there's just
- * a single context, but all code using it is for hardware
- * that supports only one context.
- */
- il->iw_mode = vif->type;
-
- ctx->is_active = true;
-
- err = il_set_mode(il, ctx);
- if (err) {
- if (!ctx->always_active)
- ctx->is_active = false;
- return err;
- }
-
- return 0;
-}
-
-int
-il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
- struct il_priv *il = hw->priv;
- struct il_vif_priv *vif_priv = (void *)vif->drv_priv;
- int err;
- u32 modes;
-
- D_MAC80211("enter: type %d, addr %pM\n",
- vif->type, vif->addr);
-
- mutex_lock(&il->mutex);
-
- if (!il_is_ready_rf(il)) {
- IL_WARN("Try to add interface when device not ready\n");
- err = -EINVAL;
- goto out;
- }
-
-
- /* check if busy context is exclusive */
- if (il->ctx.vif &&
- (il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type))) {
- err = -EINVAL;
- goto out;
- }
-
- modes = il->ctx.interface_modes | il->ctx.exclusive_interface_modes;
- if (!(modes & BIT(vif->type))) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- vif_priv->ctx = &il->ctx;
- il->ctx.vif = vif;
-
- err = il_setup_interface(il, &il->ctx);
- if (err) {
- il->ctx.vif = NULL;
- il->iw_mode = NL80211_IFTYPE_STATION;
- }
-
- out:
- mutex_unlock(&il->mutex);
-
- D_MAC80211("leave\n");
- return err;
-}
-EXPORT_SYMBOL(il_mac_add_interface);
-
-static void il_teardown_interface(struct il_priv *il,
- struct ieee80211_vif *vif,
- bool mode_change)
-{
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
-
- lockdep_assert_held(&il->mutex);
-
- if (il->scan_vif == vif) {
- il_scan_cancel_timeout(il, 200);
- il_force_scan_end(il);
- }
-
- if (!mode_change) {
- il_set_mode(il, ctx);
- if (!ctx->always_active)
- ctx->is_active = false;
- }
-}
-
-void il_mac_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct il_priv *il = hw->priv;
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
-
- D_MAC80211("enter\n");
-
- mutex_lock(&il->mutex);
-
- WARN_ON(ctx->vif != vif);
- ctx->vif = NULL;
-
- il_teardown_interface(il, vif, false);
-
- memset(il->bssid, 0, ETH_ALEN);
- mutex_unlock(&il->mutex);
-
- D_MAC80211("leave\n");
-
-}
-EXPORT_SYMBOL(il_mac_remove_interface);
-
-int il_alloc_txq_mem(struct il_priv *il)
-{
- if (!il->txq)
- il->txq = kzalloc(
- sizeof(struct il_tx_queue) *
- il->cfg->base_params->num_of_queues,
- GFP_KERNEL);
- if (!il->txq) {
- IL_ERR("Not enough memory for txq\n");
- return -ENOMEM;
- }
- return 0;
-}
-EXPORT_SYMBOL(il_alloc_txq_mem);
-
-void il_txq_mem(struct il_priv *il)
-{
- kfree(il->txq);
- il->txq = NULL;
-}
-EXPORT_SYMBOL(il_txq_mem);
-
-#ifdef CONFIG_IWLEGACY_DEBUGFS
-
-#define IL_TRAFFIC_DUMP_SIZE (IL_TRAFFIC_ENTRY_SIZE * IL_TRAFFIC_ENTRIES)
-
-void il_reset_traffic_log(struct il_priv *il)
-{
- il->tx_traffic_idx = 0;
- il->rx_traffic_idx = 0;
- if (il->tx_traffic)
- memset(il->tx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
- if (il->rx_traffic)
- memset(il->rx_traffic, 0, IL_TRAFFIC_DUMP_SIZE);
-}
-
-int il_alloc_traffic_mem(struct il_priv *il)
-{
- u32 traffic_size = IL_TRAFFIC_DUMP_SIZE;
-
- if (il_debug_level & IL_DL_TX) {
- if (!il->tx_traffic) {
- il->tx_traffic =
- kzalloc(traffic_size, GFP_KERNEL);
- if (!il->tx_traffic)
- return -ENOMEM;
- }
- }
- if (il_debug_level & IL_DL_RX) {
- if (!il->rx_traffic) {
- il->rx_traffic =
- kzalloc(traffic_size, GFP_KERNEL);
- if (!il->rx_traffic)
- return -ENOMEM;
- }
- }
- il_reset_traffic_log(il);
- return 0;
-}
-EXPORT_SYMBOL(il_alloc_traffic_mem);
-
-void il_free_traffic_mem(struct il_priv *il)
-{
- kfree(il->tx_traffic);
- il->tx_traffic = NULL;
-
- kfree(il->rx_traffic);
- il->rx_traffic = NULL;
-}
-EXPORT_SYMBOL(il_free_traffic_mem);
-
-void il_dbg_log_tx_data_frame(struct il_priv *il,
- u16 length, struct ieee80211_hdr *header)
-{
- __le16 fc;
- u16 len;
-
- if (likely(!(il_debug_level & IL_DL_TX)))
- return;
-
- if (!il->tx_traffic)
- return;
-
- fc = header->frame_control;
- if (ieee80211_is_data(fc)) {
- len = (length > IL_TRAFFIC_ENTRY_SIZE)
- ? IL_TRAFFIC_ENTRY_SIZE : length;
- memcpy((il->tx_traffic +
- (il->tx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)),
- header, len);
- il->tx_traffic_idx =
- (il->tx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
- }
-}
-EXPORT_SYMBOL(il_dbg_log_tx_data_frame);
-
-void il_dbg_log_rx_data_frame(struct il_priv *il,
- u16 length, struct ieee80211_hdr *header)
-{
- __le16 fc;
- u16 len;
-
- if (likely(!(il_debug_level & IL_DL_RX)))
- return;
-
- if (!il->rx_traffic)
- return;
-
- fc = header->frame_control;
- if (ieee80211_is_data(fc)) {
- len = (length > IL_TRAFFIC_ENTRY_SIZE)
- ? IL_TRAFFIC_ENTRY_SIZE : length;
- memcpy((il->rx_traffic +
- (il->rx_traffic_idx * IL_TRAFFIC_ENTRY_SIZE)),
- header, len);
- il->rx_traffic_idx =
- (il->rx_traffic_idx + 1) % IL_TRAFFIC_ENTRIES;
- }
-}
-EXPORT_SYMBOL(il_dbg_log_rx_data_frame);
-
-const char *il_get_mgmt_string(int cmd)
-{
- switch (cmd) {
- IL_CMD(MANAGEMENT_ASSOC_REQ);
- IL_CMD(MANAGEMENT_ASSOC_RESP);
- IL_CMD(MANAGEMENT_REASSOC_REQ);
- IL_CMD(MANAGEMENT_REASSOC_RESP);
- IL_CMD(MANAGEMENT_PROBE_REQ);
- IL_CMD(MANAGEMENT_PROBE_RESP);
- IL_CMD(MANAGEMENT_BEACON);
- IL_CMD(MANAGEMENT_ATIM);
- IL_CMD(MANAGEMENT_DISASSOC);
- IL_CMD(MANAGEMENT_AUTH);
- IL_CMD(MANAGEMENT_DEAUTH);
- IL_CMD(MANAGEMENT_ACTION);
- default:
- return "UNKNOWN";
-
- }
-}
-
-const char *il_get_ctrl_string(int cmd)
-{
- switch (cmd) {
- IL_CMD(CONTROL_BACK_REQ);
- IL_CMD(CONTROL_BACK);
- IL_CMD(CONTROL_PSPOLL);
- IL_CMD(CONTROL_RTS);
- IL_CMD(CONTROL_CTS);
- IL_CMD(CONTROL_ACK);
- IL_CMD(CONTROL_CFEND);
- IL_CMD(CONTROL_CFENDACK);
- default:
- return "UNKNOWN";
-
- }
-}
-
-void il_clear_traffic_stats(struct il_priv *il)
-{
- memset(&il->tx_stats, 0, sizeof(struct traffic_stats));
- memset(&il->rx_stats, 0, sizeof(struct traffic_stats));
-}
-
-/*
- * if CONFIG_IWLEGACY_DEBUGFS defined,
- * il_update_stats function will
- * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass
- * Use debugFs to display the rx/rx_stats
- * if CONFIG_IWLEGACY_DEBUGFS not being defined, then no MGMT and CTRL
- * information will be recorded, but DATA pkt still will be recorded
- * for the reason of il_led.c need to control the led blinking based on
- * number of tx and rx data.
- *
- */
-void
-il_update_stats(struct il_priv *il, bool is_tx, __le16 fc, u16 len)
-{
- struct traffic_stats *stats;
-
- if (is_tx)
- stats = &il->tx_stats;
- else
- stats = &il->rx_stats;
-
- if (ieee80211_is_mgmt(fc)) {
- switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
- case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
- stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
- stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
- stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
- stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
- stats->mgmt[MANAGEMENT_PROBE_REQ]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
- stats->mgmt[MANAGEMENT_PROBE_RESP]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_BEACON):
- stats->mgmt[MANAGEMENT_BEACON]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_ATIM):
- stats->mgmt[MANAGEMENT_ATIM]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
- stats->mgmt[MANAGEMENT_DISASSOC]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_AUTH):
- stats->mgmt[MANAGEMENT_AUTH]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
- stats->mgmt[MANAGEMENT_DEAUTH]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_ACTION):
- stats->mgmt[MANAGEMENT_ACTION]++;
- break;
- }
- } else if (ieee80211_is_ctl(fc)) {
- switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
- case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
- stats->ctrl[CONTROL_BACK_REQ]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_BACK):
- stats->ctrl[CONTROL_BACK]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
- stats->ctrl[CONTROL_PSPOLL]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_RTS):
- stats->ctrl[CONTROL_RTS]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_CTS):
- stats->ctrl[CONTROL_CTS]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_ACK):
- stats->ctrl[CONTROL_ACK]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_CFEND):
- stats->ctrl[CONTROL_CFEND]++;
- break;
- case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
- stats->ctrl[CONTROL_CFENDACK]++;
- break;
- }
- } else {
- /* data */
- stats->data_cnt++;
- stats->data_bytes += len;
- }
-}
-EXPORT_SYMBOL(il_update_stats);
-#endif
-
-int il_force_reset(struct il_priv *il, bool external)
-{
- struct il_force_reset *force_reset;
-
- if (test_bit(S_EXIT_PENDING, &il->status))
- return -EINVAL;
-
- force_reset = &il->force_reset;
- force_reset->reset_request_count++;
- if (!external) {
- if (force_reset->last_force_reset_jiffies &&
- time_after(force_reset->last_force_reset_jiffies +
- force_reset->reset_duration, jiffies)) {
- D_INFO("force reset rejected\n");
- force_reset->reset_reject_count++;
- return -EAGAIN;
- }
- }
- force_reset->reset_success_count++;
- force_reset->last_force_reset_jiffies = jiffies;
-
- /*
- * if the request is from external(ex: debugfs),
- * then always perform the request in regardless the module
- * parameter setting
- * if the request is from internal (uCode error or driver
- * detect failure), then fw_restart module parameter
- * need to be check before performing firmware reload
- */
-
- if (!external && !il->cfg->mod_params->restart_fw) {
- D_INFO("Cancel firmware reload based on "
- "module parameter setting\n");
- return 0;
- }
-
- IL_ERR("On demand firmware reload\n");
-
- /* Set the FW error flag -- cleared on il_down */
- set_bit(S_FW_ERROR, &il->status);
- wake_up(&il->wait_command_queue);
- /*
- * Keep the restart process from trying to send host
- * commands by clearing the INIT status bit
- */
- clear_bit(S_READY, &il->status);
- queue_work(il->workqueue, &il->restart);
-
- return 0;
-}
-
-int
-il_mac_change_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- enum nl80211_iftype newtype, bool newp2p)
-{
- struct il_priv *il = hw->priv;
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
- u32 modes;
- int err;
-
- newtype = ieee80211_iftype_p2p(newtype, newp2p);
-
- mutex_lock(&il->mutex);
-
- if (!ctx->vif || !il_is_ready_rf(il)) {
- /*
- * Huh? But wait ... this can maybe happen when
- * we're in the middle of a firmware restart!
- */
- err = -EBUSY;
- goto out;
- }
-
- modes = ctx->interface_modes | ctx->exclusive_interface_modes;
- if (!(modes & BIT(newtype))) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if ((il->ctx.exclusive_interface_modes & BIT(il->ctx.vif->type)) ||
- (il->ctx.exclusive_interface_modes & BIT(newtype))) {
- err = -EINVAL;
- goto out;
- }
-
- /* success */
- il_teardown_interface(il, vif, true);
- vif->type = newtype;
- vif->p2p = newp2p;
- err = il_setup_interface(il, ctx);
- WARN_ON(err);
- /*
- * We've switched internally, but submitting to the
- * device may have failed for some reason. Mask this
- * error, because otherwise mac80211 will not switch
- * (and set the interface type back) and we'll be
- * out of sync with it.
- */
- err = 0;
-
- out:
- mutex_unlock(&il->mutex);
- return err;
-}
-EXPORT_SYMBOL(il_mac_change_interface);
-
-/*
- * On every watchdog tick we check (latest) time stamp. If it does not
- * change during timeout period and queue is not empty we reset firmware.
- */
-static int il_check_stuck_queue(struct il_priv *il, int cnt)
-{
- struct il_tx_queue *txq = &il->txq[cnt];
- struct il_queue *q = &txq->q;
- unsigned long timeout;
- int ret;
-
- if (q->read_ptr == q->write_ptr) {
- txq->time_stamp = jiffies;
- return 0;
- }
-
- timeout = txq->time_stamp +
- msecs_to_jiffies(il->cfg->base_params->wd_timeout);
-
- if (time_after(jiffies, timeout)) {
- IL_ERR("Queue %d stuck for %u ms.\n",
- q->id, il->cfg->base_params->wd_timeout);
- ret = il_force_reset(il, false);
- return (ret == -EAGAIN) ? 0 : 1;
- }
-
- return 0;
-}
-
-/*
- * Making watchdog tick be a quarter of timeout assure we will
- * discover the queue hung between timeout and 1.25*timeout
- */
-#define IL_WD_TICK(timeout) ((timeout) / 4)
-
-/*
- * Watchdog timer callback, we check each tx queue for stuck, if if hung
- * we reset the firmware. If everything is fine just rearm the timer.
- */
-void il_bg_watchdog(unsigned long data)
-{
- struct il_priv *il = (struct il_priv *)data;
- int cnt;
- unsigned long timeout;
-
- if (test_bit(S_EXIT_PENDING, &il->status))
- return;
-
- timeout = il->cfg->base_params->wd_timeout;
- if (timeout == 0)
- return;
-
- /* monitor and check for stuck cmd queue */
- if (il_check_stuck_queue(il, il->cmd_queue))
- return;
-
- /* monitor and check for other stuck queues */
- if (il_is_any_associated(il)) {
- for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
- /* skip as we already checked the command queue */
- if (cnt == il->cmd_queue)
- continue;
- if (il_check_stuck_queue(il, cnt))
- return;
- }
- }
-
- mod_timer(&il->watchdog, jiffies +
- msecs_to_jiffies(IL_WD_TICK(timeout)));
-}
-EXPORT_SYMBOL(il_bg_watchdog);
-
-void il_setup_watchdog(struct il_priv *il)
-{
- unsigned int timeout = il->cfg->base_params->wd_timeout;
-
- if (timeout)
- mod_timer(&il->watchdog,
- jiffies + msecs_to_jiffies(IL_WD_TICK(timeout)));
- else
- del_timer(&il->watchdog);
-}
-EXPORT_SYMBOL(il_setup_watchdog);
-
-/*
- * extended beacon time format
- * time in usec will be changed into a 32-bit value in extended:internal format
- * the extended part is the beacon counts
- * the internal part is the time in usec within one beacon interval
- */
-u32
-il_usecs_to_beacons(struct il_priv *il,
- u32 usec, u32 beacon_interval)
-{
- u32 quot;
- u32 rem;
- u32 interval = beacon_interval * TIME_UNIT;
-
- if (!interval || !usec)
- return 0;
-
- quot = (usec / interval) &
- (il_beacon_time_mask_high(il,
- il->hw_params.beacon_time_tsf_bits) >>
- il->hw_params.beacon_time_tsf_bits);
- rem = (usec % interval) & il_beacon_time_mask_low(il,
- il->hw_params.beacon_time_tsf_bits);
-
- return (quot << il->hw_params.beacon_time_tsf_bits) + rem;
-}
-EXPORT_SYMBOL(il_usecs_to_beacons);
-
-/* base is usually what we get from ucode with each received frame,
- * the same as HW timer counter counting down
- */
-__le32 il_add_beacon_time(struct il_priv *il, u32 base,
- u32 addon, u32 beacon_interval)
-{
- u32 base_low = base & il_beacon_time_mask_low(il,
- il->hw_params.beacon_time_tsf_bits);
- u32 addon_low = addon & il_beacon_time_mask_low(il,
- il->hw_params.beacon_time_tsf_bits);
- u32 interval = beacon_interval * TIME_UNIT;
- u32 res = (base & il_beacon_time_mask_high(il,
- il->hw_params.beacon_time_tsf_bits)) +
- (addon & il_beacon_time_mask_high(il,
- il->hw_params.beacon_time_tsf_bits));
-
- if (base_low > addon_low)
- res += base_low - addon_low;
- else if (base_low < addon_low) {
- res += interval + base_low - addon_low;
- res += (1 << il->hw_params.beacon_time_tsf_bits);
- } else
- res += (1 << il->hw_params.beacon_time_tsf_bits);
-
- return cpu_to_le32(res);
-}
-EXPORT_SYMBOL(il_add_beacon_time);
-
-#ifdef CONFIG_PM
-
-int il_pci_suspend(struct device *device)
-{
- struct pci_dev *pdev = to_pci_dev(device);
- struct il_priv *il = pci_get_drvdata(pdev);
-
- /*
- * This function is called when system goes into suspend state
- * mac80211 will call il_mac_stop() from the mac80211 suspend function
- * first but since il_mac_stop() has no knowledge of who the caller is,
- * it will not call apm_ops.stop() to stop the DMA operation.
- * Calling apm_ops.stop here to make sure we stop the DMA.
- */
- il_apm_stop(il);
-
- return 0;
-}
-EXPORT_SYMBOL(il_pci_suspend);
-
-int il_pci_resume(struct device *device)
-{
- struct pci_dev *pdev = to_pci_dev(device);
- struct il_priv *il = pci_get_drvdata(pdev);
- bool hw_rfkill = false;
-
- /*
- * We disable the RETRY_TIMEOUT register (0x41) to keep
- * PCI Tx retries from interfering with C3 CPU state.
- */
- pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
-
- il_enable_interrupts(il);
-
- if (!(_il_rd(il, CSR_GP_CNTRL) &
- CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
- hw_rfkill = true;
-
- if (hw_rfkill)
- set_bit(S_RF_KILL_HW, &il->status);
- else
- clear_bit(S_RF_KILL_HW, &il->status);
-
- wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill);
-
- return 0;
-}
-EXPORT_SYMBOL(il_pci_resume);
-
-const struct dev_pm_ops il_pm_ops = {
- .suspend = il_pci_suspend,
- .resume = il_pci_resume,
- .freeze = il_pci_suspend,
- .thaw = il_pci_resume,
- .poweroff = il_pci_suspend,
- .restore = il_pci_resume,
-};
-EXPORT_SYMBOL(il_pm_ops);
-
-#endif /* CONFIG_PM */
-
-static void
-il_update_qos(struct il_priv *il, struct il_rxon_context *ctx)
-{
- if (test_bit(S_EXIT_PENDING, &il->status))
- return;
-
- if (!ctx->is_active)
- return;
-
- ctx->qos_data.def_qos_parm.qos_flags = 0;
-
- if (ctx->qos_data.qos_active)
- ctx->qos_data.def_qos_parm.qos_flags |=
- QOS_PARAM_FLG_UPDATE_EDCA_MSK;
-
- if (ctx->ht.enabled)
- ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
-
- D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
- ctx->qos_data.qos_active,
- ctx->qos_data.def_qos_parm.qos_flags);
-
- il_send_cmd_pdu_async(il, ctx->qos_cmd,
- sizeof(struct il_qosparam_cmd),
- &ctx->qos_data.def_qos_parm, NULL);
-}
-
-/**
- * il_mac_config - mac80211 config callback
- */
-int il_mac_config(struct ieee80211_hw *hw, u32 changed)
-{
- struct il_priv *il = hw->priv;
- const struct il_channel_info *ch_info;
- struct ieee80211_conf *conf = &hw->conf;
- struct ieee80211_channel *channel = conf->channel;
- struct il_ht_config *ht_conf = &il->current_ht_config;
- struct il_rxon_context *ctx = &il->ctx;
- unsigned long flags = 0;
- int ret = 0;
- u16 ch;
- int scan_active = 0;
- bool ht_changed = false;
-
- if (WARN_ON(!il->cfg->ops->legacy))
- return -EOPNOTSUPP;
-
- mutex_lock(&il->mutex);
-
- D_MAC80211("enter to channel %d changed 0x%X\n",
- channel->hw_value, changed);
-
- if (unlikely(test_bit(S_SCANNING, &il->status))) {
- scan_active = 1;
- D_MAC80211("scan active\n");
- }
-
- if (changed & (IEEE80211_CONF_CHANGE_SMPS |
- IEEE80211_CONF_CHANGE_CHANNEL)) {
- /* mac80211 uses static for non-HT which is what we want */
- il->current_ht_config.smps = conf->smps_mode;
-
- /*
- * Recalculate chain counts.
- *
- * If monitor mode is enabled then mac80211 will
- * set up the SM PS mode to OFF if an HT channel is
- * configured.
- */
- if (il->cfg->ops->hcmd->set_rxon_chain)
- il->cfg->ops->hcmd->set_rxon_chain(il, &il->ctx);
- }
-
- /* during scanning mac80211 will delay channel setting until
- * scan finish with changed = 0
- */
- if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
-
- if (scan_active)
- goto set_ch_out;
-
- ch = channel->hw_value;
- ch_info = il_get_channel_info(il, channel->band, ch);
- if (!il_is_channel_valid(ch_info)) {
- D_MAC80211("leave - invalid channel\n");
- ret = -EINVAL;
- goto set_ch_out;
- }
-
- if (il->iw_mode == NL80211_IFTYPE_ADHOC &&
- !il_is_channel_ibss(ch_info)) {
- D_MAC80211("leave - not IBSS channel\n");
- ret = -EINVAL;
- goto set_ch_out;
- }
-
- spin_lock_irqsave(&il->lock, flags);
-
- /* Configure HT40 channels */
- if (ctx->ht.enabled != conf_is_ht(conf)) {
- ctx->ht.enabled = conf_is_ht(conf);
- ht_changed = true;
- }
- if (ctx->ht.enabled) {
- if (conf_is_ht40_minus(conf)) {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_BELOW;
- ctx->ht.is_40mhz = true;
- } else if (conf_is_ht40_plus(conf)) {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
- ctx->ht.is_40mhz = true;
- } else {
- ctx->ht.extension_chan_offset =
- IEEE80211_HT_PARAM_CHA_SEC_NONE;
- ctx->ht.is_40mhz = false;
- }
- } else
- ctx->ht.is_40mhz = false;
-
- /*
- * Default to no protection. Protection mode will
- * later be set from BSS config in il_ht_conf
- */
- ctx->ht.protection =
- IEEE80211_HT_OP_MODE_PROTECTION_NONE;
-
- /* 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(ctx->staging.channel) != ch))
- ctx->staging.flags = 0;
-
- il_set_rxon_channel(il, channel, ctx);
- il_set_rxon_ht(il, ht_conf);
-
- il_set_flags_for_band(il, ctx, channel->band,
- ctx->vif);
-
- spin_unlock_irqrestore(&il->lock, flags);
-
- if (il->cfg->ops->legacy->update_bcast_stations)
- ret =
- il->cfg->ops->legacy->update_bcast_stations(il);
-
- set_ch_out:
- /* 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 */
- il_set_rate(il);
- }
-
- if (changed & (IEEE80211_CONF_CHANGE_PS |
- IEEE80211_CONF_CHANGE_IDLE)) {
- ret = il_power_update_mode(il, false);
- if (ret)
- D_MAC80211("Error setting sleep level\n");
- }
-
- if (changed & IEEE80211_CONF_CHANGE_POWER) {
- D_MAC80211("TX Power old=%d new=%d\n",
- il->tx_power_user_lmt, conf->power_level);
-
- il_set_tx_power(il, conf->power_level, false);
- }
-
- if (!il_is_ready(il)) {
- D_MAC80211("leave - not ready\n");
- goto out;
- }
-
- if (scan_active)
- goto out;
-
- if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
- il_commit_rxon(il, ctx);
- else
- D_INFO("Not re-sending same RXON configuration.\n");
- if (ht_changed)
- il_update_qos(il, ctx);
-
-out:
- D_MAC80211("leave\n");
- mutex_unlock(&il->mutex);
- return ret;
-}
-EXPORT_SYMBOL(il_mac_config);
-
-void il_mac_reset_tsf(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct il_priv *il = hw->priv;
- unsigned long flags;
- struct il_rxon_context *ctx = &il->ctx;
-
- if (WARN_ON(!il->cfg->ops->legacy))
- return;
-
- mutex_lock(&il->mutex);
- D_MAC80211("enter\n");
-
- spin_lock_irqsave(&il->lock, flags);
- memset(&il->current_ht_config, 0, sizeof(struct il_ht_config));
- spin_unlock_irqrestore(&il->lock, flags);
-
- spin_lock_irqsave(&il->lock, flags);
-
- /* new association get rid of ibss beacon skb */
- if (il->beacon_skb)
- dev_kfree_skb(il->beacon_skb);
-
- il->beacon_skb = NULL;
-
- il->timestamp = 0;
-
- spin_unlock_irqrestore(&il->lock, flags);
-
- il_scan_cancel_timeout(il, 100);
- if (!il_is_ready_rf(il)) {
- D_MAC80211("leave - not ready\n");
- mutex_unlock(&il->mutex);
- return;
- }
-
- /* we are restarting association process
- * clear RXON_FILTER_ASSOC_MSK bit
- */
- ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- il_commit_rxon(il, ctx);
-
- il_set_rate(il);
-
- mutex_unlock(&il->mutex);
-
- D_MAC80211("leave\n");
-}
-EXPORT_SYMBOL(il_mac_reset_tsf);
-
-static void il_ht_conf(struct il_priv *il,
- struct ieee80211_vif *vif)
-{
- struct il_ht_config *ht_conf = &il->current_ht_config;
- struct ieee80211_sta *sta;
- struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
-
- D_ASSOC("enter:\n");
-
- if (!ctx->ht.enabled)
- return;
-
- ctx->ht.protection =
- bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
- ctx->ht.non_gf_sta_present =
- !!(bss_conf->ht_operation_mode &
- IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
-
- ht_conf->single_chain_sufficient = false;
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- rcu_read_lock();
- sta = ieee80211_find_sta(vif, bss_conf->bssid);
- if (sta) {
- struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
- int maxstreams;
-
- maxstreams = (ht_cap->mcs.tx_params &
- IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
- >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
- maxstreams += 1;
-
- if (ht_cap->mcs.rx_mask[1] == 0 &&
- ht_cap->mcs.rx_mask[2] == 0)
- ht_conf->single_chain_sufficient = true;
- if (maxstreams <= 1)
- ht_conf->single_chain_sufficient = true;
- } else {
- /*
- * If at all, this can only happen through a race
- * when the AP disconnects us while we're still
- * setting up the connection, in that case mac80211
- * will soon tell us about that.
- */
- ht_conf->single_chain_sufficient = true;
- }
- rcu_read_unlock();
- break;
- case NL80211_IFTYPE_ADHOC:
- ht_conf->single_chain_sufficient = true;
- break;
- default:
- break;
- }
-
- D_ASSOC("leave\n");
-}
-
-static inline void il_set_no_assoc(struct il_priv *il,
- struct ieee80211_vif *vif)
-{
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
-
- /*
- * inform the ucode that there is no longer an
- * association and that no more packets should be
- * sent
- */
- ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- ctx->staging.assoc_id = 0;
- il_commit_rxon(il, ctx);
-}
-
-static void il_beacon_update(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct il_priv *il = hw->priv;
- unsigned long flags;
- __le64 timestamp;
- struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
-
- if (!skb)
- return;
-
- D_MAC80211("enter\n");
-
- lockdep_assert_held(&il->mutex);
-
- if (!il->beacon_ctx) {
- IL_ERR("update beacon but no beacon context!\n");
- dev_kfree_skb(skb);
- return;
- }
-
- spin_lock_irqsave(&il->lock, flags);
-
- if (il->beacon_skb)
- dev_kfree_skb(il->beacon_skb);
-
- il->beacon_skb = skb;
-
- timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
- il->timestamp = le64_to_cpu(timestamp);
-
- D_MAC80211("leave\n");
- spin_unlock_irqrestore(&il->lock, flags);
-
- if (!il_is_ready_rf(il)) {
- D_MAC80211("leave - RF not ready\n");
- return;
- }
-
- il->cfg->ops->legacy->post_associate(il);
-}
-
-void il_mac_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changes)
-{
- struct il_priv *il = hw->priv;
- struct il_rxon_context *ctx = il_rxon_ctx_from_vif(vif);
- int ret;
-
- if (WARN_ON(!il->cfg->ops->legacy))
- return;
-
- D_MAC80211("changes = 0x%X\n", changes);
-
- mutex_lock(&il->mutex);
-
- if (!il_is_alive(il)) {
- mutex_unlock(&il->mutex);
- return;
- }
-
- if (changes & BSS_CHANGED_QOS) {
- unsigned long flags;
-
- spin_lock_irqsave(&il->lock, flags);
- ctx->qos_data.qos_active = bss_conf->qos;
- il_update_qos(il, ctx);
- spin_unlock_irqrestore(&il->lock, flags);
- }
-
- if (changes & BSS_CHANGED_BEACON_ENABLED) {
- /*
- * the add_interface code must make sure we only ever
- * have a single interface that could be beaconing at
- * any time.
- */
- if (vif->bss_conf.enable_beacon)
- il->beacon_ctx = ctx;
- else
- il->beacon_ctx = NULL;
- }
-
- if (changes & BSS_CHANGED_BSSID) {
- D_MAC80211("BSSID %pM\n", bss_conf->bssid);
-
- /*
- * If there is currently a HW scan going on in the
- * background then we need to cancel it else the RXON
- * below/in post_associate will fail.
- */
- if (il_scan_cancel_timeout(il, 100)) {
- IL_WARN(
- "Aborted scan still in progress after 100ms\n");
- D_MAC80211(
- "leaving - scan abort failed.\n");
- mutex_unlock(&il->mutex);
- return;
- }
-
- /* mac80211 only sets assoc when in STATION mode */
- if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
- memcpy(ctx->staging.bssid_addr,
- bss_conf->bssid, ETH_ALEN);
-
- /* currently needed in a few places */
- memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
- } else {
- ctx->staging.filter_flags &=
- ~RXON_FILTER_ASSOC_MSK;
- }
-
- }
-
- /*
- * This needs to be after setting the BSSID in case
- * mac80211 decides to do both changes at once because
- * it will invoke post_associate.
- */
- if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON))
- il_beacon_update(hw, vif);
-
- if (changes & BSS_CHANGED_ERP_PREAMBLE) {
- D_MAC80211("ERP_PREAMBLE %d\n",
- bss_conf->use_short_preamble);
- if (bss_conf->use_short_preamble)
- ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
- }
-
- if (changes & BSS_CHANGED_ERP_CTS_PROT) {
- D_MAC80211(
- "ERP_CTS %d\n", bss_conf->use_cts_prot);
- if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ)
- ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
- else
- ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
- if (bss_conf->use_cts_prot)
- ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
- else
- ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
- }
-
- if (changes & BSS_CHANGED_BASIC_RATES) {
- /* XXX use this information
- *
- * To do that, remove code from il_set_rate() and put something
- * like this here:
- *
- if (A-band)
- ctx->staging.ofdm_basic_rates =
- bss_conf->basic_rates;
- else
- ctx->staging.ofdm_basic_rates =
- bss_conf->basic_rates >> 4;
- ctx->staging.cck_basic_rates =
- bss_conf->basic_rates & 0xF;
- */
- }
-
- if (changes & BSS_CHANGED_HT) {
- il_ht_conf(il, vif);
-
- if (il->cfg->ops->hcmd->set_rxon_chain)
- il->cfg->ops->hcmd->set_rxon_chain(il, ctx);
- }
-
- if (changes & BSS_CHANGED_ASSOC) {
- D_MAC80211("ASSOC %d\n", bss_conf->assoc);
- if (bss_conf->assoc) {
- il->timestamp = bss_conf->timestamp;
-
- if (!il_is_rfkill(il))
- il->cfg->ops->legacy->post_associate(il);
- } else
- il_set_no_assoc(il, vif);
- }
-
- if (changes && il_is_associated_ctx(ctx) && bss_conf->aid) {
- D_MAC80211("Changes (%#x) while associated\n",
- changes);
- ret = il_send_rxon_assoc(il, ctx);
- if (!ret) {
- /* Sync active_rxon with latest change. */
- memcpy((void *)&ctx->active,
- &ctx->staging,
- sizeof(struct il_rxon_cmd));
- }
- }
-
- if (changes & BSS_CHANGED_BEACON_ENABLED) {
- if (vif->bss_conf.enable_beacon) {
- memcpy(ctx->staging.bssid_addr,
- bss_conf->bssid, ETH_ALEN);
- memcpy(il->bssid, bss_conf->bssid, ETH_ALEN);
- il->cfg->ops->legacy->config_ap(il);
- } else
- il_set_no_assoc(il, vif);
- }
-
- if (changes & BSS_CHANGED_IBSS) {
- ret = il->cfg->ops->legacy->manage_ibss_station(il, vif,
- bss_conf->ibss_joined);
- if (ret)
- IL_ERR("failed to %s IBSS station %pM\n",
- bss_conf->ibss_joined ? "add" : "remove",
- bss_conf->bssid);
- }
-
- mutex_unlock(&il->mutex);
-
- D_MAC80211("leave\n");
-}
-EXPORT_SYMBOL(il_mac_bss_info_changed);
-
-irqreturn_t il_isr(int irq, void *data)
-{
- struct il_priv *il = data;
- u32 inta, inta_mask;
- u32 inta_fh;
- unsigned long flags;
- if (!il)
- return IRQ_NONE;
-
- spin_lock_irqsave(&il->lock, flags);
-
- /* 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 = _il_rd(il, CSR_INT_MASK); /* just for debug */
- _il_wr(il, CSR_INT_MASK, 0x00000000);
-
- /* Discover which interrupts are active/pending */
- inta = _il_rd(il, CSR_INT);
- inta_fh = _il_rd(il, 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) {
- D_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 */
- IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta);
- goto unplugged;
- }
-
- D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
- inta, inta_mask, inta_fh);
-
- inta &= ~CSR_INT_BIT_SCD;
-
- /* il_irq_tasklet() will service interrupts and re-enable them */
- if (likely(inta || inta_fh))
- tasklet_schedule(&il->irq_tasklet);
-
-unplugged:
- spin_unlock_irqrestore(&il->lock, flags);
- return IRQ_HANDLED;
-
-none:
- /* re-enable interrupts here since we don't have anything to service. */
- /* only Re-enable if disabled by irq */
- if (test_bit(S_INT_ENABLED, &il->status))
- il_enable_interrupts(il);
- spin_unlock_irqrestore(&il->lock, flags);
- return IRQ_NONE;
-}
-EXPORT_SYMBOL(il_isr);
-
-/*
- * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
- * function.
- */
-void il_tx_cmd_protection(struct il_priv *il,
- struct ieee80211_tx_info *info,
- __le16 fc, __le32 *tx_flags)
-{
- if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
- *tx_flags |= TX_CMD_FLG_RTS_MSK;
- *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
- *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
-
- if (!ieee80211_is_mgmt(fc))
- return;
-
- switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
- case cpu_to_le16(IEEE80211_STYPE_AUTH):
- case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
- case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
- case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
- *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
- *tx_flags |= TX_CMD_FLG_CTS_MSK;
- break;
- }
- } else if (info->control.rates[0].flags &
- IEEE80211_TX_RC_USE_CTS_PROTECT) {
- *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
- *tx_flags |= TX_CMD_FLG_CTS_MSK;
- *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
- }
-}
-EXPORT_SYMBOL(il_tx_cmd_protection);
projects / mirror_ubuntu-jammy-kernel.git / commitdiff