/****************************************************************************** * * GPL LICENSE SUMMARY * * Copyright(c) 2008 - 2009 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 *****************************************************************************/ #include #include #include #include #include "iwl-eeprom.h" #include "iwl-dev.h" /* FIXME: remove */ #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 core"); MODULE_VERSION(IWLWIFI_VERSION); MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = { {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP, 0, COEX_UNASSOC_IDLE_FLAGS}, {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP, 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS}, {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP, 0, COEX_UNASSOC_AUTO_SCAN_FLAGS}, {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP, 0, COEX_CALIBRATION_FLAGS}, {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP, 0, COEX_PERIODIC_CALIBRATION_FLAGS}, {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP, 0, COEX_CONNECTION_ESTAB_FLAGS}, {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP, 0, COEX_ASSOCIATED_IDLE_FLAGS}, {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP, 0, COEX_ASSOC_MANUAL_SCAN_FLAGS}, {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP, 0, COEX_ASSOC_AUTO_SCAN_FLAGS}, {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP, 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS}, {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS}, {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS}, {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP, 0, COEX_STAND_ALONE_DEBUG_FLAGS}, {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP, 0, COEX_IPAN_ASSOC_LEVEL_FLAGS}, {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS}, {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS} }; #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ IWL_RATE_SISO_##s##M_PLCP, \ IWL_RATE_MIMO2_##s##M_PLCP,\ IWL_RATE_MIMO3_##s##M_PLCP,\ IWL_RATE_##r##M_IEEE, \ IWL_RATE_##ip##M_INDEX, \ IWL_RATE_##in##M_INDEX, \ IWL_RATE_##rp##M_INDEX, \ IWL_RATE_##rn##M_INDEX, \ IWL_RATE_##pp##M_INDEX, \ IWL_RATE_##np##M_INDEX } u32 iwl_debug_level; EXPORT_SYMBOL(iwl_debug_level); static irqreturn_t iwl_isr(int irq, void *data); /* * Parameter order: * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate * * If there isn't a valid next or previous rate then INV is used which * maps to IWL_RATE_INVALID * */ const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = { IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ /* FIXME:RS: ^^ should be INV (legacy) */ }; EXPORT_SYMBOL(iwl_rates); /** * translate ucode response to mac80211 tx status control values */ void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, struct ieee80211_tx_info *info) { struct ieee80211_tx_rate *r = &info->control.rates[0]; info->antenna_sel_tx = ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); if (rate_n_flags & RATE_MCS_HT_MSK) r->flags |= IEEE80211_TX_RC_MCS; if (rate_n_flags & RATE_MCS_GF_MSK) r->flags |= IEEE80211_TX_RC_GREEN_FIELD; if (rate_n_flags & RATE_MCS_HT40_MSK) r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; if (rate_n_flags & RATE_MCS_DUP_MSK) r->flags |= IEEE80211_TX_RC_DUP_DATA; if (rate_n_flags & RATE_MCS_SGI_MSK) r->flags |= IEEE80211_TX_RC_SHORT_GI; r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band); } EXPORT_SYMBOL(iwl_hwrate_to_tx_control); int iwl_hwrate_to_plcp_idx(u32 rate_n_flags) { int idx = 0; /* HT rate format */ if (rate_n_flags & RATE_MCS_HT_MSK) { idx = (rate_n_flags & 0xff); if (idx >= IWL_RATE_MIMO3_6M_PLCP) idx = idx - IWL_RATE_MIMO3_6M_PLCP; else if (idx >= IWL_RATE_MIMO2_6M_PLCP) idx = idx - IWL_RATE_MIMO2_6M_PLCP; idx += IWL_FIRST_OFDM_RATE; /* skip 9M not supported in ht*/ if (idx >= IWL_RATE_9M_INDEX) idx += 1; if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE)) return idx; /* legacy rate format, search for match in table */ } else { for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++) if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) return idx; } return -1; } EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx); int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) { int idx = 0; int band_offset = 0; /* HT rate format: mac80211 wants an MCS number, which is just LSB */ if (rate_n_flags & RATE_MCS_HT_MSK) { idx = (rate_n_flags & 0xff); return idx; /* Legacy rate format, search for match in table */ } else { if (band == IEEE80211_BAND_5GHZ) band_offset = IWL_FIRST_OFDM_RATE; for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) return idx - band_offset; } return -1; } u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant) { int i; u8 ind = ant; for (i = 0; i < RATE_ANT_NUM - 1; i++) { ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; if (priv->hw_params.valid_tx_ant & BIT(ind)) return ind; } return ant; } EXPORT_SYMBOL(iwl_toggle_tx_ant); const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; EXPORT_SYMBOL(iwl_bcast_addr); /* This function both allocates and initializes hw and priv. */ struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg, struct ieee80211_ops *hw_ops) { struct iwl_priv *priv; /* mac80211 allocates memory for this device instance, including * space for this driver's private structure */ struct ieee80211_hw *hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops); if (hw == NULL) { printk(KERN_ERR "%s: Can not allocate network device\n", cfg->name); goto out; } priv = hw->priv; priv->hw = hw; out: return hw; } EXPORT_SYMBOL(iwl_alloc_all); void iwl_hw_detect(struct iwl_priv *priv) { priv->hw_rev = _iwl_read32(priv, CSR_HW_REV); priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG); pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id); } EXPORT_SYMBOL(iwl_hw_detect); int iwl_hw_nic_init(struct iwl_priv *priv) { unsigned long flags; struct iwl_rx_queue *rxq = &priv->rxq; int ret; /* nic_init */ spin_lock_irqsave(&priv->lock, flags); priv->cfg->ops->lib->apm_ops.init(priv); /* Set interrupt coalescing timer to 512 usecs */ iwl_write8(priv, CSR_INT_COALESCING, 512 / 32); spin_unlock_irqrestore(&priv->lock, flags); ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN); priv->cfg->ops->lib->apm_ops.config(priv); /* Allocate the RX queue, or reset if it is already allocated */ if (!rxq->bd) { ret = iwl_rx_queue_alloc(priv); if (ret) { IWL_ERR(priv, "Unable to initialize Rx queue\n"); return -ENOMEM; } } else iwl_rx_queue_reset(priv, rxq); iwl_rx_replenish(priv); iwl_rx_init(priv, rxq); spin_lock_irqsave(&priv->lock, flags); rxq->need_update = 1; iwl_rx_queue_update_write_ptr(priv, rxq); spin_unlock_irqrestore(&priv->lock, flags); /* Allocate and init all Tx and Command queues */ ret = iwl_txq_ctx_reset(priv); if (ret) return ret; set_bit(STATUS_INIT, &priv->status); return 0; } EXPORT_SYMBOL(iwl_hw_nic_init); /* * QoS support */ void iwl_activate_qos(struct iwl_priv *priv, u8 force) { if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; priv->qos_data.def_qos_parm.qos_flags = 0; if (priv->qos_data.qos_cap.q_AP.queue_request && !priv->qos_data.qos_cap.q_AP.txop_request) priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TXOP_TYPE_MSK; if (priv->qos_data.qos_active) priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_UPDATE_EDCA_MSK; if (priv->current_ht_config.is_ht) priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; if (force || iwl_is_associated(priv)) { IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", priv->qos_data.qos_active, priv->qos_data.def_qos_parm.qos_flags); iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM, sizeof(struct iwl_qosparam_cmd), &priv->qos_data.def_qos_parm, NULL); } } EXPORT_SYMBOL(iwl_activate_qos); /* * AC CWmin CW max AIFSN TXOP Limit TXOP Limit * (802.11b) (802.11a/g) * AC_BK 15 1023 7 0 0 * AC_BE 15 1023 3 0 0 * AC_VI 7 15 2 6.016ms 3.008ms * AC_VO 3 7 2 3.264ms 1.504ms */ void iwl_reset_qos(struct iwl_priv *priv) { u16 cw_min = 15; u16 cw_max = 1023; u8 aifs = 2; bool is_legacy = false; unsigned long flags; int i; spin_lock_irqsave(&priv->lock, flags); /* QoS always active in AP and ADHOC mode * In STA mode wait for association */ if (priv->iw_mode == NL80211_IFTYPE_ADHOC || priv->iw_mode == NL80211_IFTYPE_AP) priv->qos_data.qos_active = 1; else priv->qos_data.qos_active = 0; /* check for legacy mode */ if ((priv->iw_mode == NL80211_IFTYPE_ADHOC && (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) || (priv->iw_mode == NL80211_IFTYPE_STATION && (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) { cw_min = 31; is_legacy = 1; } if (priv->qos_data.qos_active) aifs = 3; /* AC_BE */ priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min); priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max); priv->qos_data.def_qos_parm.ac[0].aifsn = aifs; priv->qos_data.def_qos_parm.ac[0].edca_txop = 0; priv->qos_data.def_qos_parm.ac[0].reserved1 = 0; if (priv->qos_data.qos_active) { /* AC_BK */ i = 1; priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min); priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max); priv->qos_data.def_qos_parm.ac[i].aifsn = 7; priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; /* AC_VI */ i = 2; priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16((cw_min + 1) / 2 - 1); priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_min); priv->qos_data.def_qos_parm.ac[i].aifsn = 2; if (is_legacy) priv->qos_data.def_qos_parm.ac[i].edca_txop = cpu_to_le16(6016); else priv->qos_data.def_qos_parm.ac[i].edca_txop = cpu_to_le16(3008); priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; /* AC_VO */ i = 3; priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16((cw_min + 1) / 4 - 1); priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16((cw_min + 1) / 2 - 1); priv->qos_data.def_qos_parm.ac[i].aifsn = 2; priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; if (is_legacy) priv->qos_data.def_qos_parm.ac[i].edca_txop = cpu_to_le16(3264); else priv->qos_data.def_qos_parm.ac[i].edca_txop = cpu_to_le16(1504); } else { for (i = 1; i < 4; i++) { priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min); priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max); priv->qos_data.def_qos_parm.ac[i].aifsn = aifs; priv->qos_data.def_qos_parm.ac[i].edca_txop = 0; priv->qos_data.def_qos_parm.ac[i].reserved1 = 0; } } IWL_DEBUG_QOS(priv, "set QoS to default \n"); spin_unlock_irqrestore(&priv->lock, flags); } EXPORT_SYMBOL(iwl_reset_qos); #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, struct ieee80211_sta_ht_cap *ht_info, enum ieee80211_band band) { u16 max_bit_rate = 0; u8 rx_chains_num = priv->hw_params.rx_chains_num; u8 tx_chains_num = priv->hw_params.tx_chains_num; ht_info->cap = 0; memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); ht_info->ht_supported = true; if (priv->cfg->ht_greenfield_support) ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; ht_info->cap |= IEEE80211_HT_CAP_SGI_20; if (priv->cfg->support_sm_ps) ht_info->cap |= (IEEE80211_HT_CAP_SM_PS & (WLAN_HT_CAP_SM_PS_DYNAMIC << 2)); else ht_info->cap |= (IEEE80211_HT_CAP_SM_PS & (WLAN_HT_CAP_SM_PS_DISABLED << 2)); max_bit_rate = MAX_BIT_RATE_20_MHZ; if (priv->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 (priv->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); } } /** * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom */ int iwlcore_init_geos(struct iwl_priv *priv) { struct iwl_channel_info *ch; struct ieee80211_supported_band *sband; struct ieee80211_channel *channels; struct ieee80211_channel *geo_ch; struct ieee80211_rate *rates; int i = 0; if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); set_bit(STATUS_GEO_CONFIGURED, &priv->status); return 0; } channels = kzalloc(sizeof(struct ieee80211_channel) * priv->channel_count, GFP_KERNEL); if (!channels) return -ENOMEM; rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), GFP_KERNEL); if (!rates) { kfree(channels); return -ENOMEM; } /* 5.2GHz channels start after the 2.4GHz channels */ sband = &priv->bands[IEEE80211_BAND_5GHZ]; sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; /* just OFDM */ sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; if (priv->cfg->sku & IWL_SKU_N) iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, IEEE80211_BAND_5GHZ); sband = &priv->bands[IEEE80211_BAND_2GHZ]; sband->channels = channels; /* OFDM & CCK */ sband->bitrates = rates; sband->n_bitrates = IWL_RATE_COUNT_LEGACY; if (priv->cfg->sku & IWL_SKU_N) iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, IEEE80211_BAND_2GHZ); priv->ieee_channels = channels; priv->ieee_rates = rates; for (i = 0; i < priv->channel_count; i++) { ch = &priv->channel_info[i]; /* FIXME: might be removed if scan is OK */ if (!is_channel_valid(ch)) continue; if (is_channel_a_band(ch)) sband = &priv->bands[IEEE80211_BAND_5GHZ]; else sband = &priv->bands[IEEE80211_BAND_2GHZ]; geo_ch = &sband->channels[sband->n_channels++]; geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel); geo_ch->max_power = ch->max_power_avg; geo_ch->max_antenna_gain = 0xff; geo_ch->hw_value = ch->channel; if (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 > priv->tx_power_device_lmt) priv->tx_power_device_lmt = ch->max_power_avg; } else { geo_ch->flags |= IEEE80211_CHAN_DISABLED; } IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, geo_ch->center_freq, is_channel_a_band(ch) ? "5.2" : "2.4", geo_ch->flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", geo_ch->flags); } if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->cfg->sku & IWL_SKU_A) { IWL_INFO(priv, "Incorrectly detected BG card as ABG. " "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", priv->pci_dev->device, priv->pci_dev->subsystem_device); priv->cfg->sku &= ~IWL_SKU_A; } IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", priv->bands[IEEE80211_BAND_2GHZ].n_channels, priv->bands[IEEE80211_BAND_5GHZ].n_channels); set_bit(STATUS_GEO_CONFIGURED, &priv->status); return 0; } EXPORT_SYMBOL(iwlcore_init_geos); /* * iwlcore_free_geos - undo allocations in iwlcore_init_geos */ void iwlcore_free_geos(struct iwl_priv *priv) { kfree(priv->ieee_channels); kfree(priv->ieee_rates); clear_bit(STATUS_GEO_CONFIGURED, &priv->status); } EXPORT_SYMBOL(iwlcore_free_geos); /* * iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this * function. */ void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info, __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; } 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; } } EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag); static bool is_single_rx_stream(struct iwl_priv *priv) { return !priv->current_ht_config.is_ht || priv->current_ht_config.single_chain_sufficient; } static u8 iwl_is_channel_extension(struct iwl_priv *priv, enum ieee80211_band band, u16 channel, u8 extension_chan_offset) { const struct iwl_channel_info *ch_info; ch_info = iwl_get_channel_info(priv, band, channel); if (!is_channel_valid(ch_info)) return 0; 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 0; } u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv, struct ieee80211_sta_ht_cap *sta_ht_inf) { struct iwl_ht_config *ht_conf = &priv->current_ht_config; if (!ht_conf->is_ht || !ht_conf->is_40mhz) return 0; /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 * the bit will not set if it is pure 40MHz case */ if (sta_ht_inf) { if (!sta_ht_inf->ht_supported) return 0; } #ifdef CONFIG_IWLWIFI_DEBUG if (priv->disable_ht40) return 0; #endif return iwl_is_channel_extension(priv, priv->band, le16_to_cpu(priv->staging_rxon.channel), ht_conf->extension_chan_offset); } EXPORT_SYMBOL(iwl_is_ht40_tx_allowed); static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) { u16 new_val = 0; u16 beacon_factor = 0; 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; } void iwl_setup_rxon_timing(struct iwl_priv *priv) { u64 tsf; s32 interval_tm, rem; unsigned long flags; struct ieee80211_conf *conf = NULL; u16 beacon_int; conf = ieee80211_get_hw_conf(priv->hw); spin_lock_irqsave(&priv->lock, flags); priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp); priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval); if (priv->iw_mode == NL80211_IFTYPE_STATION) { beacon_int = priv->beacon_int; priv->rxon_timing.atim_window = 0; } else { beacon_int = priv->vif->bss_conf.beacon_int; /* TODO: we need to get atim_window from upper stack * for now we set to 0 */ priv->rxon_timing.atim_window = 0; } beacon_int = iwl_adjust_beacon_interval(beacon_int, priv->hw_params.max_beacon_itrvl * 1024); priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int); tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ interval_tm = beacon_int * 1024; rem = do_div(tsf, interval_tm); priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem); spin_unlock_irqrestore(&priv->lock, flags); IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n", le16_to_cpu(priv->rxon_timing.beacon_interval), le32_to_cpu(priv->rxon_timing.beacon_init_val), le16_to_cpu(priv->rxon_timing.atim_window)); } EXPORT_SYMBOL(iwl_setup_rxon_timing); void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) { struct iwl_rxon_cmd *rxon = &priv->staging_rxon; if (hw_decrypt) rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; else rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; } EXPORT_SYMBOL(iwl_set_rxon_hwcrypto); /** * iwl_check_rxon_cmd - validate RXON structure is valid * * NOTE: This is really only useful during development and can eventually * be #ifdef'd out once the driver is stable and folks aren't actively * making changes */ int iwl_check_rxon_cmd(struct iwl_priv *priv) { int error = 0; int counter = 1; struct iwl_rxon_cmd *rxon = &priv->staging_rxon; if (rxon->flags & RXON_FLG_BAND_24G_MSK) { error |= le32_to_cpu(rxon->flags & (RXON_FLG_TGJ_NARROW_BAND_MSK | RXON_FLG_RADAR_DETECT_MSK)); if (error) IWL_WARN(priv, "check 24G fields %d | %d\n", counter++, error); } else { error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ? 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK); if (error) IWL_WARN(priv, "check 52 fields %d | %d\n", counter++, error); error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK); if (error) IWL_WARN(priv, "check 52 CCK %d | %d\n", counter++, error); } error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1; if (error) IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error); /* make sure basic rates 6Mbps and 1Mbps are supported */ error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) && ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0)); if (error) IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error); error |= (le16_to_cpu(rxon->assoc_id) > 2007); if (error) IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error); error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)); if (error) IWL_WARN(priv, "check CCK and short slot %d | %d\n", counter++, error); error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)); if (error) IWL_WARN(priv, "check CCK & auto detect %d | %d\n", counter++, error); error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK); if (error) IWL_WARN(priv, "check TGG and auto detect %d | %d\n", counter++, error); if (error) IWL_WARN(priv, "Tuning to channel %d\n", le16_to_cpu(rxon->channel)); if (error) { IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n"); return -1; } return 0; } EXPORT_SYMBOL(iwl_check_rxon_cmd); /** * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed * @priv: staging_rxon is compared to active_rxon * * If the RXON structure is changing enough to require a new tune, * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. */ int iwl_full_rxon_required(struct iwl_priv *priv) { /* These items are only settable from the full RXON command */ if (!(iwl_is_associated(priv)) || compare_ether_addr(priv->staging_rxon.bssid_addr, priv->active_rxon.bssid_addr) || compare_ether_addr(priv->staging_rxon.node_addr, priv->active_rxon.node_addr) || compare_ether_addr(priv->staging_rxon.wlap_bssid_addr, priv->active_rxon.wlap_bssid_addr) || (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) || (priv->staging_rxon.channel != priv->active_rxon.channel) || (priv->staging_rxon.air_propagation != priv->active_rxon.air_propagation) || (priv->staging_rxon.ofdm_ht_single_stream_basic_rates != priv->active_rxon.ofdm_ht_single_stream_basic_rates) || (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates != priv->active_rxon.ofdm_ht_dual_stream_basic_rates) || (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates != priv->active_rxon.ofdm_ht_triple_stream_basic_rates) || (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id)) return 1; /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can * be updated with the RXON_ASSOC command -- however only some * flag transitions are allowed using RXON_ASSOC */ /* Check if we are not switching bands */ if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) != (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)) return 1; /* Check if we are switching association toggle */ if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) != (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) return 1; return 0; } EXPORT_SYMBOL(iwl_full_rxon_required); u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv) { int i; int rate_mask; /* Set rate mask*/ if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK; else rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK; /* Find lowest valid rate */ for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID; i = iwl_rates[i].next_ieee) { if (rate_mask & (1 << i)) return iwl_rates[i].plcp; } /* No valid rate was found. Assign the lowest one */ if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) return IWL_RATE_1M_PLCP; else return IWL_RATE_6M_PLCP; } EXPORT_SYMBOL(iwl_rate_get_lowest_plcp); void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) { struct iwl_rxon_cmd *rxon = &priv->staging_rxon; if (!ht_conf->is_ht) { 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; } /* FIXME: if the definition of ht_protection changed, the "translation" * will be needed for rxon->flags */ rxon->flags |= cpu_to_le32(ht_conf->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 (iwl_is_ht40_tx_allowed(priv, NULL)) { /* pure ht40 */ if (ht_conf->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 (ht_conf->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 (ht_conf->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 */ IWL_ERR(priv, "invalid extension channel offset\n"); break; } } } else { rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; } if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), ht_conf->ht_protection, ht_conf->extension_chan_offset); return; } EXPORT_SYMBOL(iwl_set_rxon_ht); #define IWL_NUM_RX_CHAINS_MULTIPLE 3 #define IWL_NUM_RX_CHAINS_SINGLE 2 #define IWL_NUM_IDLE_CHAINS_DUAL 2 #define IWL_NUM_IDLE_CHAINS_SINGLE 1 /* * Determine how many receiver/antenna chains to use. * * More provides better reception via diversity. Fewer saves power * at the expense of throughput, but only when not in powersave to * start with. * * MIMO (dual stream) requires at least 2, but works better with 3. * This does not determine *which* chains to use, just how many. */ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) { /* # of Rx chains to use when expecting MIMO. */ if (is_single_rx_stream(priv)) return IWL_NUM_RX_CHAINS_SINGLE; else return IWL_NUM_RX_CHAINS_MULTIPLE; } /* * When we are in power saving mode, unless device support spatial * multiplexing power save, use the active count for rx chain count. */ static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) { int idle_cnt = active_cnt; bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); if (priv->cfg->support_sm_ps) { /* # Rx chains when idling and maybe trying to save power */ switch (priv->current_ht_config.sm_ps) { case WLAN_HT_CAP_SM_PS_STATIC: case WLAN_HT_CAP_SM_PS_DYNAMIC: idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL : IWL_NUM_IDLE_CHAINS_SINGLE; break; case WLAN_HT_CAP_SM_PS_DISABLED: idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE; break; case WLAN_HT_CAP_SM_PS_INVALID: default: IWL_ERR(priv, "invalid sm_ps mode %d\n", priv->current_ht_config.sm_ps); WARN_ON(1); break; } } return idle_cnt; } /* up to 4 chains */ static u8 iwl_count_chain_bitmap(u32 chain_bitmap) { u8 res; res = (chain_bitmap & BIT(0)) >> 0; res += (chain_bitmap & BIT(1)) >> 1; res += (chain_bitmap & BIT(2)) >> 2; res += (chain_bitmap & BIT(3)) >> 3; return res; } /** * iwl_is_monitor_mode - Determine if interface in monitor mode * * priv->iw_mode is set in add_interface, but add_interface is * never called for monitor mode. The only way mac80211 informs us about * monitor mode is through configuring filters (call to configure_filter). */ bool iwl_is_monitor_mode(struct iwl_priv *priv) { return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK); } EXPORT_SYMBOL(iwl_is_monitor_mode); /** * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image * * Selects how many and which Rx receivers/antennas/chains to use. * This should not be used for scan command ... it puts data in wrong place. */ void iwl_set_rxon_chain(struct iwl_priv *priv) { bool is_single = is_single_rx_stream(priv); bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; u32 active_chains; u16 rx_chain; /* Tell uCode which antennas are actually connected. * Before first association, we assume all antennas are connected. * Just after first association, iwl_chain_noise_calibration() * checks which antennas actually *are* connected. */ if (priv->chain_noise_data.active_chains) active_chains = priv->chain_noise_data.active_chains; else active_chains = priv->hw_params.valid_rx_ant; rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; /* How many receivers should we use? */ active_rx_cnt = iwl_get_active_rx_chain_count(priv); idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); /* correct rx chain count according hw settings * and chain noise calibration */ valid_rx_cnt = iwl_count_chain_bitmap(active_chains); if (valid_rx_cnt < active_rx_cnt) active_rx_cnt = valid_rx_cnt; if (valid_rx_cnt < idle_rx_cnt) idle_rx_cnt = valid_rx_cnt; rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; /* copied from 'iwl_bg_request_scan()' */ /* Force use of chains B and C (0x6) for Rx for 4965 * Avoid A (0x1) because of its off-channel reception on A-band. * MIMO is not used here, but value is required */ if (iwl_is_monitor_mode(priv) && !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) && ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) { rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS; rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS; rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; } priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain); if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; else priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", priv->staging_rxon.rx_chain, active_rx_cnt, idle_rx_cnt); WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || active_rx_cnt < idle_rx_cnt); } EXPORT_SYMBOL(iwl_set_rxon_chain); /** * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz * @channel: Any channel valid for the requested phymode * In addition to setting the staging RXON, priv->phymode is also set. * * NOTE: Does not commit to the hardware; it sets appropriate bit fields * in the staging RXON flag structure based on the phymode */ int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch) { enum ieee80211_band band = ch->band; u16 channel = ieee80211_frequency_to_channel(ch->center_freq); if (!iwl_get_channel_info(priv, band, channel)) { IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n", channel, band); return -EINVAL; } if ((le16_to_cpu(priv->staging_rxon.channel) == channel) && (priv->band == band)) return 0; priv->staging_rxon.channel = cpu_to_le16(channel); if (band == IEEE80211_BAND_5GHZ) priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK; else priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; priv->band = band; IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); return 0; } EXPORT_SYMBOL(iwl_set_rxon_channel); void iwl_set_flags_for_band(struct iwl_priv *priv, enum ieee80211_band band) { if (band == IEEE80211_BAND_5GHZ) { priv->staging_rxon.flags &= ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_CCK_MSK); priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; } else { /* Copied from iwl_post_associate() */ if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; if (priv->iw_mode == NL80211_IFTYPE_ADHOC) priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK; priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK; priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK; } } /* * initialize rxon structure with default values from eeprom */ void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode) { const struct iwl_channel_info *ch_info; memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon)); switch (mode) { case NL80211_IFTYPE_AP: priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP; break; case NL80211_IFTYPE_STATION: priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS; priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; break; case NL80211_IFTYPE_ADHOC: priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS; priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK; priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; break; default: IWL_ERR(priv, "Unsupported interface type %d\n", mode); break; } #if 0 /* TODO: Figure out when short_preamble would be set and cache from * that */ if (!hw_to_local(priv->hw)->short_preamble) priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; else priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; #endif ch_info = iwl_get_channel_info(priv, priv->band, le16_to_cpu(priv->active_rxon.channel)); if (!ch_info) ch_info = &priv->channel_info[0]; /* * in some case A channels are all non IBSS * in this case force B/G channel */ if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info))) ch_info = &priv->channel_info[0]; priv->staging_rxon.channel = cpu_to_le16(ch_info->channel); priv->band = ch_info->band; iwl_set_flags_for_band(priv, priv->band); priv->staging_rxon.ofdm_basic_rates = (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; priv->staging_rxon.cck_basic_rates = (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; /* clear both MIX and PURE40 mode flag */ priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN); priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff; priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff; priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff; } EXPORT_SYMBOL(iwl_connection_init_rx_config); static void iwl_set_rate(struct iwl_priv *priv) { const struct ieee80211_supported_band *hw = NULL; struct ieee80211_rate *rate; int i; hw = iwl_get_hw_mode(priv, priv->band); if (!hw) { IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); return; } priv->active_rate = 0; priv->active_rate_basic = 0; for (i = 0; i < hw->n_bitrates; i++) { rate = &(hw->bitrates[i]); if (rate->hw_value < IWL_RATE_COUNT_LEGACY) priv->active_rate |= (1 << rate->hw_value); } IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n", priv->active_rate, priv->active_rate_basic); /* * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK) * otherwise set it to the default of all CCK rates and 6, 12, 24 for * OFDM */ if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK) priv->staging_rxon.cck_basic_rates = ((priv->active_rate_basic & IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF; else priv->staging_rxon.cck_basic_rates = (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK) priv->staging_rxon.ofdm_basic_rates = ((priv->active_rate_basic & (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >> IWL_FIRST_OFDM_RATE) & 0xFF; else priv->staging_rxon.ofdm_basic_rates = (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; } void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon; struct iwl_csa_notification *csa = &(pkt->u.csa_notif); if (priv->switch_rxon.switch_in_progress) { if (!le32_to_cpu(csa->status) && (csa->channel == priv->switch_rxon.channel)) { rxon->channel = csa->channel; priv->staging_rxon.channel = csa->channel; IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", le16_to_cpu(csa->channel)); } else IWL_ERR(priv, "CSA notif (fail) : channel %d\n", le16_to_cpu(csa->channel)); priv->switch_rxon.switch_in_progress = false; } } EXPORT_SYMBOL(iwl_rx_csa); #ifdef CONFIG_IWLWIFI_DEBUG void iwl_print_rx_config_cmd(struct iwl_priv *priv) { struct iwl_rxon_cmd *rxon = &priv->staging_rxon; IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); } EXPORT_SYMBOL(iwl_print_rx_config_cmd); #endif /** * iwl_irq_handle_error - called for HW or SW error interrupt from card */ void iwl_irq_handle_error(struct iwl_priv *priv) { /* Set the FW error flag -- cleared on iwl_down */ set_bit(STATUS_FW_ERROR, &priv->status); /* Cancel currently queued command. */ clear_bit(STATUS_HCMD_ACTIVE, &priv->status); #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) { priv->cfg->ops->lib->dump_nic_error_log(priv); priv->cfg->ops->lib->dump_nic_event_log(priv); iwl_print_rx_config_cmd(priv); } #endif wake_up_interruptible(&priv->wait_command_queue); /* Keep the restart process from trying to send host * commands by clearing the INIT status bit */ clear_bit(STATUS_READY, &priv->status); if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { IWL_DEBUG(priv, IWL_DL_FW_ERRORS, "Restarting adapter due to uCode error.\n"); if (priv->cfg->mod_params->restart_fw) queue_work(priv->workqueue, &priv->restart); } } EXPORT_SYMBOL(iwl_irq_handle_error); int iwl_apm_stop_master(struct iwl_priv *priv) { int ret = 0; /* stop device's busmaster DMA activity */ iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); if (ret) IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n"); IWL_DEBUG_INFO(priv, "stop master\n"); return ret; } EXPORT_SYMBOL(iwl_apm_stop_master); void iwl_apm_stop(struct iwl_priv *priv) { IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); /* Stop device's DMA activity */ iwl_apm_stop_master(priv); /* Reset the entire device */ iwl_set_bit(priv, 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. */ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); } EXPORT_SYMBOL(iwl_apm_stop); /* * Start up NIC's basic functionality after it has been reset * (e.g. after platform boot, or shutdown via iwl_apm_stop()) * NOTE: This does not load uCode nor start the embedded processor */ int iwl_apm_init(struct iwl_priv *priv) { int ret = 0; u16 lctl; IWL_DEBUG_INFO(priv, "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) */ iwl_set_bit(priv, 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) */ iwl_set_bit(priv, 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) */ iwl_set_bit(priv, 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-existant bit) */ iwl_set_bit(priv, 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 (priv->cfg->set_l0s) { lctl = iwl_pcie_link_ctl(priv); if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == PCI_CFG_LINK_CTRL_VAL_L1_EN) { /* L1-ASPM enabled; disable(!) L0S */ iwl_set_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); } else { /* L1-ASPM disabled; enable(!) L0S */ iwl_clear_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); } } /* Configure analog phase-lock-loop before activating to D0A */ if (priv->cfg->pll_cfg_val) iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val); /* * Set "initialization complete" bit to move adapter from * D0U* --> D0A* (powered-up active) state. */ iwl_set_bit(priv, 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. iwl_write_prph() * and accesses to uCode SRAM. */ ret = iwl_poll_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); if (ret < 0) { IWL_DEBUG_INFO(priv, "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; * later devices (i.e. 5000 and later) have non-volatile SRAM, * and don't need BSM to restore data after power-saving sleep. * * 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 (priv->cfg->use_bsm) iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); else iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); udelay(20); /* Disable L1-Active */ iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, APMG_PCIDEV_STT_VAL_L1_ACT_DIS); out: return ret; } EXPORT_SYMBOL(iwl_apm_init); void iwl_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct iwl_priv *priv = hw->priv; __le32 *filter_flags = &priv->staging_rxon.filter_flags; IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n", changed_flags, *total_flags); if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) { if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) *filter_flags |= RXON_FILTER_PROMISC_MSK; else *filter_flags &= ~RXON_FILTER_PROMISC_MSK; } if (changed_flags & FIF_ALLMULTI) { if (*total_flags & FIF_ALLMULTI) *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK; else *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK; } if (changed_flags & FIF_CONTROL) { if (*total_flags & FIF_CONTROL) *filter_flags |= RXON_FILTER_CTL2HOST_MSK; else *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK; } if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { if (*total_flags & FIF_BCN_PRBRESP_PROMISC) *filter_flags |= RXON_FILTER_BCON_AWARE_MSK; else *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK; } /* We avoid iwl_commit_rxon here to commit the new filter flags * since mac80211 will call ieee80211_hw_config immediately. * (mc_list is not supported at this time). Otherwise, we need to * queue a background iwl_commit_rxon work. */ *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; } EXPORT_SYMBOL(iwl_configure_filter); int iwl_set_hw_params(struct iwl_priv *priv) { priv->hw_params.max_rxq_size = RX_QUEUE_SIZE; priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; if (priv->cfg->mod_params->amsdu_size_8K) priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K); else priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K); priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL; if (priv->cfg->mod_params->disable_11n) priv->cfg->sku &= ~IWL_SKU_N; /* Device-specific setup */ return priv->cfg->ops->lib->set_hw_params(priv); } EXPORT_SYMBOL(iwl_set_hw_params); int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) { int ret = 0; s8 prev_tx_power = priv->tx_power_user_lmt; if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) { IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n", tx_power, IWL_TX_POWER_TARGET_POWER_MIN); return -EINVAL; } if (tx_power > priv->tx_power_device_lmt) { IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n", tx_power, priv->tx_power_device_lmt); return -EINVAL; } if (priv->tx_power_user_lmt != tx_power) force = true; /* if nic is not up don't send command */ if (iwl_is_ready_rf(priv)) { priv->tx_power_user_lmt = tx_power; if (force && priv->cfg->ops->lib->send_tx_power) ret = priv->cfg->ops->lib->send_tx_power(priv); else if (!priv->cfg->ops->lib->send_tx_power) ret = -EOPNOTSUPP; /* * if fail to set tx_power, restore the orig. tx power */ if (ret) priv->tx_power_user_lmt = prev_tx_power; } /* * Even this is an async host command, the command * will always report success from uCode * So once driver can placing the command into the queue * successfully, driver can use priv->tx_power_user_lmt * to reflect the current tx power */ return ret; } EXPORT_SYMBOL(iwl_set_tx_power); #define ICT_COUNT (PAGE_SIZE/sizeof(u32)) /* Free dram table */ void iwl_free_isr_ict(struct iwl_priv *priv) { if (priv->ict_tbl_vir) { pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE, priv->ict_tbl_vir, priv->ict_tbl_dma); priv->ict_tbl_vir = NULL; } } EXPORT_SYMBOL(iwl_free_isr_ict); /* allocate dram shared table it is a PAGE_SIZE aligned * also reset all data related to ICT table interrupt. */ int iwl_alloc_isr_ict(struct iwl_priv *priv) { if (priv->cfg->use_isr_legacy) return 0; /* allocate shrared data table */ priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE, &priv->ict_tbl_dma); if (!priv->ict_tbl_vir) return -ENOMEM; /* align table to PAGE_SIZE boundry */ priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE); IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n", (unsigned long long)priv->ict_tbl_dma, (unsigned long long)priv->aligned_ict_tbl_dma, (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma)); priv->ict_tbl = priv->ict_tbl_vir + (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma); IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n", priv->ict_tbl, priv->ict_tbl_vir, (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma)); /* reset table and index to all 0 */ memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE); priv->ict_index = 0; /* add periodic RX interrupt */ priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC; return 0; } EXPORT_SYMBOL(iwl_alloc_isr_ict); /* Device is going up inform it about using ICT interrupt table, * also we need to tell the driver to start using ICT interrupt. */ int iwl_reset_ict(struct iwl_priv *priv) { u32 val; unsigned long flags; if (!priv->ict_tbl_vir) return 0; spin_lock_irqsave(&priv->lock, flags); iwl_disable_interrupts(priv); memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT); val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT; val |= CSR_DRAM_INT_TBL_ENABLE; val |= CSR_DRAM_INIT_TBL_WRAP_CHECK; IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X " "aligned dma address %Lx\n", val, (unsigned long long)priv->aligned_ict_tbl_dma); iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val); priv->use_ict = true; priv->ict_index = 0; iwl_write32(priv, CSR_INT, priv->inta_mask); iwl_enable_interrupts(priv); spin_unlock_irqrestore(&priv->lock, flags); return 0; } EXPORT_SYMBOL(iwl_reset_ict); /* Device is going down disable ict interrupt usage */ void iwl_disable_ict(struct iwl_priv *priv) { unsigned long flags; spin_lock_irqsave(&priv->lock, flags); priv->use_ict = false; spin_unlock_irqrestore(&priv->lock, flags); } EXPORT_SYMBOL(iwl_disable_ict); /* interrupt handler using ict table, with this interrupt driver will * stop using INTA register to get device's interrupt, reading this register * is expensive, device will write interrupts in ICT dram table, increment * index then will fire interrupt to driver, driver will OR all ICT table * entries from current index up to table entry with 0 value. the result is * the interrupt we need to service, driver will set the entries back to 0 and * set index. */ irqreturn_t iwl_isr_ict(int irq, void *data) { struct iwl_priv *priv = data; u32 inta, inta_mask; u32 val = 0; if (!priv) return IRQ_NONE; /* dram interrupt table not set yet, * use legacy interrupt. */ if (!priv->use_ict) return iwl_isr(irq, data); spin_lock(&priv->lock); /* Disable (but don't clear!) interrupts here to avoid * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ iwl_write32(priv, CSR_INT_MASK, 0x00000000); /* 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 (!priv->ict_tbl[priv->ict_index]) { IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n"); goto none; } /* read all entries that not 0 start with ict_index */ while (priv->ict_tbl[priv->ict_index]) { val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]); IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n", priv->ict_index, le32_to_cpu(priv->ict_tbl[priv->ict_index])); priv->ict_tbl[priv->ict_index] = 0; priv->ict_index = iwl_queue_inc_wrap(priv->ict_index, ICT_COUNT); } /* We should not get this value, just ignore it. */ if (val == 0xffffffff) val = 0; inta = (0xff & val) | ((0xff00 & val) << 16); IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n", inta, inta_mask, val); inta &= priv->inta_mask; priv->inta |= inta; /* iwl_irq_tasklet() will service interrupts and re-enable them */ if (likely(inta)) tasklet_schedule(&priv->irq_tasklet); else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) { /* Allow interrupt if was disabled by this handler and * no tasklet was schedules, We should not enable interrupt, * tasklet will enable it. */ iwl_enable_interrupts(priv); } spin_unlock(&priv->lock); 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(STATUS_INT_ENABLED, &priv->status) && !priv->inta) iwl_enable_interrupts(priv); spin_unlock(&priv->lock); return IRQ_NONE; } EXPORT_SYMBOL(iwl_isr_ict); static irqreturn_t iwl_isr(int irq, void *data) { struct iwl_priv *priv = data; u32 inta, inta_mask; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_fh; #endif if (!priv) return IRQ_NONE; spin_lock(&priv->lock); /* Disable (but don't clear!) interrupts here to avoid * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ iwl_write32(priv, CSR_INT_MASK, 0x00000000); /* Discover which interrupts are active/pending */ inta = iwl_read32(priv, CSR_INT); /* 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) { IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n"); goto none; } if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { /* Hardware disappeared. It might have already raised * an interrupt */ IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); goto unplugged; } #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, " "fh 0x%08x\n", inta, inta_mask, inta_fh); } #endif priv->inta |= inta; /* iwl_irq_tasklet() will service interrupts and re-enable them */ if (likely(inta)) tasklet_schedule(&priv->irq_tasklet); else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) iwl_enable_interrupts(priv); unplugged: spin_unlock(&priv->lock); return IRQ_HANDLED; none: /* re-enable interrupts here since we don't have anything to service. */ /* only Re-enable if diabled by irq and no schedules tasklet. */ if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) iwl_enable_interrupts(priv); spin_unlock(&priv->lock); return IRQ_NONE; } irqreturn_t iwl_isr_legacy(int irq, void *data) { struct iwl_priv *priv = data; u32 inta, inta_mask; u32 inta_fh; if (!priv) return IRQ_NONE; spin_lock(&priv->lock); /* Disable (but don't clear!) interrupts here to avoid * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ iwl_write32(priv, CSR_INT_MASK, 0x00000000); /* Discover which interrupts are active/pending */ inta = iwl_read32(priv, CSR_INT); inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); /* Ignore interrupt if there's nothing in NIC to service. * This may be due to IRQ shared with another device, * or due to sporadic interrupts thrown from our NIC. */ if (!inta && !inta_fh) { IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n"); goto none; } if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { /* Hardware disappeared. It might have already raised * an interrupt */ IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); goto unplugged; } IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, inta_fh); inta &= ~CSR_INT_BIT_SCD; /* iwl_irq_tasklet() will service interrupts and re-enable them */ if (likely(inta || inta_fh)) tasklet_schedule(&priv->irq_tasklet); unplugged: spin_unlock(&priv->lock); return IRQ_HANDLED; none: /* re-enable interrupts here since we don't have anything to service. */ /* only Re-enable if diabled by irq */ if (test_bit(STATUS_INT_ENABLED, &priv->status)) iwl_enable_interrupts(priv); spin_unlock(&priv->lock); return IRQ_NONE; } EXPORT_SYMBOL(iwl_isr_legacy); int iwl_send_bt_config(struct iwl_priv *priv) { struct iwl_bt_cmd bt_cmd = { .flags = BT_COEX_MODE_4W, .lead_time = BT_LEAD_TIME_DEF, .max_kill = BT_MAX_KILL_DEF, .kill_ack_mask = 0, .kill_cts_mask = 0, }; return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, sizeof(struct iwl_bt_cmd), &bt_cmd); } EXPORT_SYMBOL(iwl_send_bt_config); int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) { struct iwl_statistics_cmd statistics_cmd = { .configuration_flags = clear ? IWL_STATS_CONF_CLEAR_STATS : 0, }; if (flags & CMD_ASYNC) return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, sizeof(struct iwl_statistics_cmd), &statistics_cmd, NULL); else return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, sizeof(struct iwl_statistics_cmd), &statistics_cmd); } EXPORT_SYMBOL(iwl_send_statistics_request); /** * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host, * using sample data 100 bytes apart. If these sample points are good, * it's a pretty good bet that everything between them is good, too. */ static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) { u32 val; int ret = 0; u32 errcnt = 0; u32 i; IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len); for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) { /* read data comes through single port, auto-incr addr */ /* NOTE: Use the debugless read so we don't flood kernel log * if IWL_DL_IO is set */ iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, i + IWL49_RTC_INST_LOWER_BOUND); val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); if (val != le32_to_cpu(*image)) { ret = -EIO; errcnt++; if (errcnt >= 3) break; } } return ret; } /** * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host, * looking at all data. */ static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len) { u32 val; u32 save_len = len; int ret = 0; u32 errcnt; IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len); iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, IWL49_RTC_INST_LOWER_BOUND); errcnt = 0; for (; len > 0; len -= sizeof(u32), image++) { /* read data comes through single port, auto-incr addr */ /* NOTE: Use the debugless read so we don't flood kernel log * if IWL_DL_IO is set */ val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); if (val != le32_to_cpu(*image)) { IWL_ERR(priv, "uCode INST section is invalid at " "offset 0x%x, is 0x%x, s/b 0x%x\n", save_len - len, val, le32_to_cpu(*image)); ret = -EIO; errcnt++; if (errcnt >= 20) break; } } if (!errcnt) IWL_DEBUG_INFO(priv, "ucode image in INSTRUCTION memory is good\n"); return ret; } /** * iwl_verify_ucode - determine which instruction image is in SRAM, * and verify its contents */ int iwl_verify_ucode(struct iwl_priv *priv) { __le32 *image; u32 len; int ret; /* Try bootstrap */ image = (__le32 *)priv->ucode_boot.v_addr; len = priv->ucode_boot.len; ret = iwlcore_verify_inst_sparse(priv, image, len); if (!ret) { IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n"); return 0; } /* Try initialize */ image = (__le32 *)priv->ucode_init.v_addr; len = priv->ucode_init.len; ret = iwlcore_verify_inst_sparse(priv, image, len); if (!ret) { IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n"); return 0; } /* Try runtime/protocol */ image = (__le32 *)priv->ucode_code.v_addr; len = priv->ucode_code.len; ret = iwlcore_verify_inst_sparse(priv, image, len); if (!ret) { IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n"); return 0; } IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); /* Since nothing seems to match, show first several data entries in * instruction SRAM, so maybe visual inspection will give a clue. * Selection of bootstrap image (vs. other images) is arbitrary. */ image = (__le32 *)priv->ucode_boot.v_addr; len = priv->ucode_boot.len; ret = iwl_verify_inst_full(priv, image, len); return ret; } EXPORT_SYMBOL(iwl_verify_ucode); void iwl_rf_kill_ct_config(struct iwl_priv *priv) { struct iwl_ct_kill_config cmd; struct iwl_ct_kill_throttling_config adv_cmd; unsigned long flags; int ret = 0; spin_lock_irqsave(&priv->lock, flags); iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); spin_unlock_irqrestore(&priv->lock, flags); priv->thermal_throttle.ct_kill_toggle = false; if (priv->cfg->support_ct_kill_exit) { adv_cmd.critical_temperature_enter = cpu_to_le32(priv->hw_params.ct_kill_threshold); adv_cmd.critical_temperature_exit = cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, sizeof(adv_cmd), &adv_cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, " "critical temperature enter is %d," "exit is %d\n", priv->hw_params.ct_kill_threshold, priv->hw_params.ct_kill_exit_threshold); } else { cmd.critical_temperature_R = cpu_to_le32(priv->hw_params.ct_kill_threshold); ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, " "critical temperature is %d\n", priv->hw_params.ct_kill_threshold); } } EXPORT_SYMBOL(iwl_rf_kill_ct_config); /* * CARD_STATE_CMD * * Use: Sets the device's internal card state to enable, disable, or halt * * When in the 'enable' state the card operates as normal. * When in the 'disable' state, the card enters into a low power mode. * When in the 'halt' state, the card is shut down and must be fully * restarted to come back on. */ int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag) { struct iwl_host_cmd cmd = { .id = REPLY_CARD_STATE_CMD, .len = sizeof(u32), .data = &flags, .flags = meta_flag, }; return iwl_send_cmd(priv, &cmd); } void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { #ifdef CONFIG_IWLWIFI_DEBUG struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", sleep->pm_sleep_mode, sleep->pm_wakeup_src); #endif } EXPORT_SYMBOL(iwl_rx_pm_sleep_notif); void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " "notification for %s:\n", len, get_cmd_string(pkt->hdr.cmd)); iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); } EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif); void iwl_rx_reply_error(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " "seq 0x%04X ser 0x%08X\n", le32_to_cpu(pkt->u.err_resp.error_type), get_cmd_string(pkt->u.err_resp.cmd_id), pkt->u.err_resp.cmd_id, le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), le32_to_cpu(pkt->u.err_resp.error_info)); } EXPORT_SYMBOL(iwl_rx_reply_error); void iwl_clear_isr_stats(struct iwl_priv *priv) { memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); } int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, const struct ieee80211_tx_queue_params *params) { struct iwl_priv *priv = hw->priv; unsigned long flags; int q; IWL_DEBUG_MAC80211(priv, "enter\n"); if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); return -EIO; } if (queue >= AC_NUM) { IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); return 0; } q = AC_NUM - 1 - queue; spin_lock_irqsave(&priv->lock, flags); priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min); priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max); priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; priv->qos_data.def_qos_parm.ac[q].edca_txop = cpu_to_le16((params->txop * 32)); priv->qos_data.def_qos_parm.ac[q].reserved1 = 0; priv->qos_data.qos_active = 1; if (priv->iw_mode == NL80211_IFTYPE_AP) iwl_activate_qos(priv, 1); else if (priv->assoc_id && iwl_is_associated(priv)) iwl_activate_qos(priv, 0); spin_unlock_irqrestore(&priv->lock, flags); IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } EXPORT_SYMBOL(iwl_mac_conf_tx); static void iwl_ht_conf(struct iwl_priv *priv, struct ieee80211_bss_conf *bss_conf) { struct iwl_ht_config *ht_conf = &priv->current_ht_config; struct ieee80211_sta *sta; IWL_DEBUG_MAC80211(priv, "enter: \n"); if (!ht_conf->is_ht) return; ht_conf->ht_protection = bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; ht_conf->non_GF_STA_present = !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); ht_conf->single_chain_sufficient = false; switch (priv->iw_mode) { case NL80211_IFTYPE_STATION: rcu_read_lock(); sta = ieee80211_find_sta(priv->vif, priv->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; } IWL_DEBUG_MAC80211(priv, "leave\n"); } #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) void iwl_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { struct iwl_priv *priv = hw->priv; int ret; IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); if (!iwl_is_alive(priv)) return; mutex_lock(&priv->mutex); if (changes & BSS_CHANGED_BEACON && priv->iw_mode == NL80211_IFTYPE_AP) { dev_kfree_skb(priv->ibss_beacon); priv->ibss_beacon = ieee80211_beacon_get(hw, vif); } if (changes & BSS_CHANGED_BEACON_INT) { priv->beacon_int = bss_conf->beacon_int; /* TODO: in AP mode, do something to make this take effect */ } if (changes & BSS_CHANGED_BSSID) { IWL_DEBUG_MAC80211(priv, "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 (iwl_scan_cancel_timeout(priv, 100)) { IWL_WARN(priv, "Aborted scan still in progress after 100ms\n"); IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n"); mutex_unlock(&priv->mutex); return; } /* mac80211 only sets assoc when in STATION mode */ if (priv->iw_mode == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { memcpy(priv->staging_rxon.bssid_addr, bss_conf->bssid, ETH_ALEN); /* currently needed in a few places */ memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); } else { priv->staging_rxon.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 (priv->iw_mode == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) { struct sk_buff *beacon = ieee80211_beacon_get(hw, vif); if (beacon) iwl_mac_beacon_update(hw, beacon); } if (changes & BSS_CHANGED_ERP_PREAMBLE) { IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", bss_conf->use_short_preamble); if (bss_conf->use_short_preamble) priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; } if (changes & BSS_CHANGED_ERP_CTS_PROT) { IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot); if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK; } if (changes & BSS_CHANGED_BASIC_RATES) { /* XXX use this information * * To do that, remove code from iwl_set_rate() and put something * like this here: * if (A-band) priv->staging_rxon.ofdm_basic_rates = bss_conf->basic_rates; else priv->staging_rxon.ofdm_basic_rates = bss_conf->basic_rates >> 4; priv->staging_rxon.cck_basic_rates = bss_conf->basic_rates & 0xF; */ } if (changes & BSS_CHANGED_HT) { iwl_ht_conf(priv, bss_conf); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); } if (changes & BSS_CHANGED_ASSOC) { IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); if (bss_conf->assoc) { priv->assoc_id = bss_conf->aid; priv->beacon_int = bss_conf->beacon_int; priv->timestamp = bss_conf->timestamp; priv->assoc_capability = bss_conf->assoc_capability; iwl_led_associate(priv); /* * We have just associated, don't start scan too early * leave time for EAPOL exchange to complete. * * XXX: do this in mac80211 */ priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; if (!iwl_is_rfkill(priv)) priv->cfg->ops->lib->post_associate(priv); } else { priv->assoc_id = 0; iwl_led_disassociate(priv); } } if (changes && iwl_is_associated(priv) && priv->assoc_id) { IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", changes); ret = iwl_send_rxon_assoc(priv); if (!ret) { /* Sync active_rxon with latest change. */ memcpy((void *)&priv->active_rxon, &priv->staging_rxon, sizeof(struct iwl_rxon_cmd)); } } if ((changes & BSS_CHANGED_BEACON_ENABLED) && vif->bss_conf.enable_beacon) { memcpy(priv->staging_rxon.bssid_addr, bss_conf->bssid, ETH_ALEN); memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); iwlcore_config_ap(priv); } mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } EXPORT_SYMBOL(iwl_bss_info_changed); int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb) { struct iwl_priv *priv = hw->priv; unsigned long flags; __le64 timestamp; IWL_DEBUG_MAC80211(priv, "enter\n"); if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); return -EIO; } if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n"); return -EIO; } spin_lock_irqsave(&priv->lock, flags); if (priv->ibss_beacon) dev_kfree_skb(priv->ibss_beacon); priv->ibss_beacon = skb; priv->assoc_id = 0; timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; priv->timestamp = le64_to_cpu(timestamp); IWL_DEBUG_MAC80211(priv, "leave\n"); spin_unlock_irqrestore(&priv->lock, flags); iwl_reset_qos(priv); priv->cfg->ops->lib->post_associate(priv); return 0; } EXPORT_SYMBOL(iwl_mac_beacon_update); int iwl_set_mode(struct iwl_priv *priv, int mode) { if (mode == NL80211_IFTYPE_ADHOC) { const struct iwl_channel_info *ch_info; ch_info = iwl_get_channel_info(priv, priv->band, le16_to_cpu(priv->staging_rxon.channel)); if (!ch_info || !is_channel_ibss(ch_info)) { IWL_ERR(priv, "channel %d not IBSS channel\n", le16_to_cpu(priv->staging_rxon.channel)); return -EINVAL; } } iwl_connection_init_rx_config(priv, mode); if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN); iwl_clear_stations_table(priv); /* dont commit rxon if rf-kill is on*/ if (!iwl_is_ready_rf(priv)) return -EAGAIN; iwlcore_commit_rxon(priv); return 0; } EXPORT_SYMBOL(iwl_set_mode); int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) { struct iwl_priv *priv = hw->priv; unsigned long flags; IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type); if (priv->vif) { IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n"); return -EOPNOTSUPP; } spin_lock_irqsave(&priv->lock, flags); priv->vif = conf->vif; priv->iw_mode = conf->type; spin_unlock_irqrestore(&priv->lock, flags); mutex_lock(&priv->mutex); if (conf->mac_addr) { IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr); memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN); } if (iwl_set_mode(priv, conf->type) == -EAGAIN) /* we are not ready, will run again when ready */ set_bit(STATUS_MODE_PENDING, &priv->status); mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } EXPORT_SYMBOL(iwl_mac_add_interface); void iwl_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) { struct iwl_priv *priv = hw->priv; IWL_DEBUG_MAC80211(priv, "enter\n"); mutex_lock(&priv->mutex); if (iwl_is_ready_rf(priv)) { iwl_scan_cancel_timeout(priv, 100); priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; iwlcore_commit_rxon(priv); } if (priv->vif == conf->vif) { priv->vif = NULL; memset(priv->bssid, 0, ETH_ALEN); } mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } EXPORT_SYMBOL(iwl_mac_remove_interface); /** * iwl_mac_config - mac80211 config callback * * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to * be set inappropriately and the driver currently sets the hardware up to * use it whenever needed. */ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) { struct iwl_priv *priv = hw->priv; const struct iwl_channel_info *ch_info; struct ieee80211_conf *conf = &hw->conf; struct iwl_ht_config *ht_conf = &priv->current_ht_config; unsigned long flags = 0; int ret = 0; u16 ch; int scan_active = 0; mutex_lock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", conf->channel->hw_value, changed); if (unlikely(!priv->cfg->mod_params->disable_hw_scan && test_bit(STATUS_SCANNING, &priv->status))) { scan_active = 1; IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); } /* 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 = ieee80211_frequency_to_channel(conf->channel->center_freq); ch_info = iwl_get_channel_info(priv, conf->channel->band, ch); if (!is_channel_valid(ch_info)) { IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); ret = -EINVAL; goto set_ch_out; } if (priv->iw_mode == NL80211_IFTYPE_ADHOC && !is_channel_ibss(ch_info)) { IWL_ERR(priv, "channel %d in band %d not " "IBSS channel\n", conf->channel->hw_value, conf->channel->band); ret = -EINVAL; goto set_ch_out; } spin_lock_irqsave(&priv->lock, flags); /* Configure HT40 channels */ ht_conf->is_ht = conf_is_ht(conf); if (ht_conf->is_ht) { if (conf_is_ht40_minus(conf)) { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; ht_conf->is_40mhz = true; } else if (conf_is_ht40_plus(conf)) { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; ht_conf->is_40mhz = true; } else { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; ht_conf->is_40mhz = false; } } else ht_conf->is_40mhz = false; /* Default to no protection. Protection mode will later be set * from BSS config in iwl_ht_conf */ ht_conf->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(priv->staging_rxon.channel) != ch)) priv->staging_rxon.flags = 0; iwl_set_rxon_channel(priv, conf->channel); iwl_set_flags_for_band(priv, conf->channel->band); spin_unlock_irqrestore(&priv->lock, flags); if (iwl_is_associated(priv) && (le16_to_cpu(priv->active_rxon.channel) != ch) && priv->cfg->ops->lib->set_channel_switch) { iwl_set_rate(priv); /* * at this point, staging_rxon has the * configuration for channel switch */ ret = priv->cfg->ops->lib->set_channel_switch(priv, ch); if (!ret) { iwl_print_rx_config_cmd(priv); goto out; } priv->switch_rxon.switch_in_progress = false; } 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 */ iwl_set_rate(priv); } if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { ret = iwl_power_update_mode(priv, false); if (ret) IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); } if (changed & IEEE80211_CONF_CHANGE_POWER) { IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", priv->tx_power_user_lmt, conf->power_level); iwl_set_tx_power(priv, conf->power_level, false); } /* call to ensure that 4965 rx_chain is set properly in monitor mode */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); if (!iwl_is_ready(priv)) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); goto out; } if (scan_active) goto out; if (memcmp(&priv->active_rxon, &priv->staging_rxon, sizeof(priv->staging_rxon))) iwlcore_commit_rxon(priv); else IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n"); out: IWL_DEBUG_MAC80211(priv, "leave\n"); mutex_unlock(&priv->mutex); return ret; } EXPORT_SYMBOL(iwl_mac_config); int iwl_mac_get_tx_stats(struct ieee80211_hw *hw, struct ieee80211_tx_queue_stats *stats) { struct iwl_priv *priv = hw->priv; int i, avail; struct iwl_tx_queue *txq; struct iwl_queue *q; unsigned long flags; IWL_DEBUG_MAC80211(priv, "enter\n"); if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); return -EIO; } spin_lock_irqsave(&priv->lock, flags); for (i = 0; i < AC_NUM; i++) { txq = &priv->txq[i]; q = &txq->q; avail = iwl_queue_space(q); stats[i].len = q->n_window - avail; stats[i].limit = q->n_window - q->high_mark; stats[i].count = q->n_window; } spin_unlock_irqrestore(&priv->lock, flags); IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } EXPORT_SYMBOL(iwl_mac_get_tx_stats); void iwl_mac_reset_tsf(struct ieee80211_hw *hw) { struct iwl_priv *priv = hw->priv; unsigned long flags; mutex_lock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "enter\n"); spin_lock_irqsave(&priv->lock, flags); memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); spin_unlock_irqrestore(&priv->lock, flags); iwl_reset_qos(priv); spin_lock_irqsave(&priv->lock, flags); priv->assoc_id = 0; priv->assoc_capability = 0; priv->assoc_station_added = 0; /* new association get rid of ibss beacon skb */ if (priv->ibss_beacon) dev_kfree_skb(priv->ibss_beacon); priv->ibss_beacon = NULL; priv->beacon_int = priv->vif->bss_conf.beacon_int; priv->timestamp = 0; if ((priv->iw_mode == NL80211_IFTYPE_STATION)) priv->beacon_int = 0; spin_unlock_irqrestore(&priv->lock, flags); if (!iwl_is_ready_rf(priv)) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); mutex_unlock(&priv->mutex); return; } /* we are restarting association process * clear RXON_FILTER_ASSOC_MSK bit */ if (priv->iw_mode != NL80211_IFTYPE_AP) { iwl_scan_cancel_timeout(priv, 100); priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; iwlcore_commit_rxon(priv); } if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n"); mutex_unlock(&priv->mutex); return; } iwl_set_rate(priv); mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); } EXPORT_SYMBOL(iwl_mac_reset_tsf); int iwl_alloc_txq_mem(struct iwl_priv *priv) { if (!priv->txq) priv->txq = kzalloc( sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues, GFP_KERNEL); if (!priv->txq) { IWL_ERR(priv, "Not enough memory for txq \n"); return -ENOMEM; } return 0; } EXPORT_SYMBOL(iwl_alloc_txq_mem); void iwl_free_txq_mem(struct iwl_priv *priv) { kfree(priv->txq); priv->txq = NULL; } EXPORT_SYMBOL(iwl_free_txq_mem); int iwl_send_wimax_coex(struct iwl_priv *priv) { struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd); if (priv->cfg->support_wimax_coexist) { /* UnMask wake up src at associated sleep */ coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK; /* UnMask wake up src at unassociated sleep */ coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK; memcpy(coex_cmd.sta_prio, cu_priorities, sizeof(struct iwl_wimax_coex_event_entry) * COEX_NUM_OF_EVENTS); /* enabling the coexistence feature */ coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK; /* enabling the priorities tables */ coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK; } else { /* coexistence is disabled */ memset(&coex_cmd, 0, sizeof(coex_cmd)); } return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD, sizeof(coex_cmd), &coex_cmd); } EXPORT_SYMBOL(iwl_send_wimax_coex); #ifdef CONFIG_IWLWIFI_DEBUGFS #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) void iwl_reset_traffic_log(struct iwl_priv *priv) { priv->tx_traffic_idx = 0; priv->rx_traffic_idx = 0; if (priv->tx_traffic) memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); if (priv->rx_traffic) memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE); } int iwl_alloc_traffic_mem(struct iwl_priv *priv) { u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; if (iwl_debug_level & IWL_DL_TX) { if (!priv->tx_traffic) { priv->tx_traffic = kzalloc(traffic_size, GFP_KERNEL); if (!priv->tx_traffic) return -ENOMEM; } } if (iwl_debug_level & IWL_DL_RX) { if (!priv->rx_traffic) { priv->rx_traffic = kzalloc(traffic_size, GFP_KERNEL); if (!priv->rx_traffic) return -ENOMEM; } } iwl_reset_traffic_log(priv); return 0; } EXPORT_SYMBOL(iwl_alloc_traffic_mem); void iwl_free_traffic_mem(struct iwl_priv *priv) { kfree(priv->tx_traffic); priv->tx_traffic = NULL; kfree(priv->rx_traffic); priv->rx_traffic = NULL; } EXPORT_SYMBOL(iwl_free_traffic_mem); void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv, u16 length, struct ieee80211_hdr *header) { __le16 fc; u16 len; if (likely(!(iwl_debug_level & IWL_DL_TX))) return; if (!priv->tx_traffic) return; fc = header->frame_control; if (ieee80211_is_data(fc)) { len = (length > IWL_TRAFFIC_ENTRY_SIZE) ? IWL_TRAFFIC_ENTRY_SIZE : length; memcpy((priv->tx_traffic + (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), header, len); priv->tx_traffic_idx = (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; } } EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame); void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, u16 length, struct ieee80211_hdr *header) { __le16 fc; u16 len; if (likely(!(iwl_debug_level & IWL_DL_RX))) return; if (!priv->rx_traffic) return; fc = header->frame_control; if (ieee80211_is_data(fc)) { len = (length > IWL_TRAFFIC_ENTRY_SIZE) ? IWL_TRAFFIC_ENTRY_SIZE : length; memcpy((priv->rx_traffic + (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)), header, len); priv->rx_traffic_idx = (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; } } EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame); const char *get_mgmt_string(int cmd) { switch (cmd) { IWL_CMD(MANAGEMENT_ASSOC_REQ); IWL_CMD(MANAGEMENT_ASSOC_RESP); IWL_CMD(MANAGEMENT_REASSOC_REQ); IWL_CMD(MANAGEMENT_REASSOC_RESP); IWL_CMD(MANAGEMENT_PROBE_REQ); IWL_CMD(MANAGEMENT_PROBE_RESP); IWL_CMD(MANAGEMENT_BEACON); IWL_CMD(MANAGEMENT_ATIM); IWL_CMD(MANAGEMENT_DISASSOC); IWL_CMD(MANAGEMENT_AUTH); IWL_CMD(MANAGEMENT_DEAUTH); IWL_CMD(MANAGEMENT_ACTION); default: return "UNKNOWN"; } } const char *get_ctrl_string(int cmd) { switch (cmd) { IWL_CMD(CONTROL_BACK_REQ); IWL_CMD(CONTROL_BACK); IWL_CMD(CONTROL_PSPOLL); IWL_CMD(CONTROL_RTS); IWL_CMD(CONTROL_CTS); IWL_CMD(CONTROL_ACK); IWL_CMD(CONTROL_CFEND); IWL_CMD(CONTROL_CFENDACK); default: return "UNKNOWN"; } } void iwl_clear_tx_stats(struct iwl_priv *priv) { memset(&priv->tx_stats, 0, sizeof(struct traffic_stats)); } void iwl_clear_rx_stats(struct iwl_priv *priv) { memset(&priv->rx_stats, 0, sizeof(struct traffic_stats)); } /* * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_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_statistics * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL * information will be recorded, but DATA pkt still will be recorded * for the reason of iwl_led.c need to control the led blinking based on * number of tx and rx data. * */ void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) { struct traffic_stats *stats; if (is_tx) stats = &priv->tx_stats; else stats = &priv->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; } iwl_leds_background(priv); } EXPORT_SYMBOL(iwl_update_stats); #endif #ifdef CONFIG_PM int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state) { struct iwl_priv *priv = pci_get_drvdata(pdev); /* * This function is called when system goes into suspend state * mac80211 will call iwl_mac_stop() from the mac80211 suspend function * first but since iwl_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. */ priv->cfg->ops->lib->apm_ops.stop(priv); pci_save_state(pdev); pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } EXPORT_SYMBOL(iwl_pci_suspend); int iwl_pci_resume(struct pci_dev *pdev) { struct iwl_priv *priv = pci_get_drvdata(pdev); int ret; pci_set_power_state(pdev, PCI_D0); ret = pci_enable_device(pdev); if (ret) return ret; pci_restore_state(pdev); iwl_enable_interrupts(priv); return 0; } EXPORT_SYMBOL(iwl_pci_resume); #endif /* CONFIG_PM */