| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved. |
| * |
| * Portions of this file are derived from the ipw3945 project, as well |
| * as portions of the ieee80211 subsystem header files. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/delay.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/wireless.h> |
| #include <linux/firmware.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_arp.h> |
| |
| #include <net/ieee80211_radiotap.h> |
| #include <net/lib80211.h> |
| #include <net/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #define DRV_NAME "iwl3945" |
| |
| #include "iwl-fh.h" |
| #include "iwl-3945-fh.h" |
| #include "iwl-commands.h" |
| #include "iwl-sta.h" |
| #include "iwl-3945.h" |
| #include "iwl-helpers.h" |
| #include "iwl-core.h" |
| #include "iwl-dev.h" |
| |
| /* |
| * module name, copyright, version, etc. |
| */ |
| |
| #define DRV_DESCRIPTION \ |
| "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| #define VD "d" |
| #else |
| #define VD |
| #endif |
| |
| #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT |
| #define VS "s" |
| #else |
| #define VS |
| #endif |
| |
| #define IWL39_VERSION "1.2.26k" VD VS |
| #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation" |
| #define DRV_AUTHOR "<ilw@linux.intel.com>" |
| #define DRV_VERSION IWL39_VERSION |
| |
| |
| MODULE_DESCRIPTION(DRV_DESCRIPTION); |
| MODULE_VERSION(DRV_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| MODULE_LICENSE("GPL"); |
| |
| /* module parameters */ |
| struct iwl_mod_params iwl3945_mod_params = { |
| .num_of_queues = IWL39_NUM_QUEUES, /* Not used */ |
| .sw_crypto = 1, |
| .restart_fw = 1, |
| /* the rest are 0 by default */ |
| }; |
| |
| /** |
| * iwl3945_get_antenna_flags - Get antenna flags for RXON command |
| * @priv: eeprom and antenna fields are used to determine antenna flags |
| * |
| * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed |
| * iwl3945_mod_params.antenna specifies the antenna diversity mode: |
| * |
| * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself |
| * IWL_ANTENNA_MAIN - Force MAIN antenna |
| * IWL_ANTENNA_AUX - Force AUX antenna |
| */ |
| __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv) |
| { |
| struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
| |
| switch (iwl3945_mod_params.antenna) { |
| case IWL_ANTENNA_DIVERSITY: |
| return 0; |
| |
| case IWL_ANTENNA_MAIN: |
| if (eeprom->antenna_switch_type) |
| return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; |
| return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; |
| |
| case IWL_ANTENNA_AUX: |
| if (eeprom->antenna_switch_type) |
| return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; |
| return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; |
| } |
| |
| /* bad antenna selector value */ |
| IWL_ERR(priv, "Bad antenna selector value (0x%x)\n", |
| iwl3945_mod_params.antenna); |
| |
| return 0; /* "diversity" is default if error */ |
| } |
| |
| static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| __le16 key_flags = 0; |
| int ret; |
| |
| key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); |
| key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| |
| if (sta_id == priv->hw_params.bcast_sta_id) |
| key_flags |= STA_KEY_MULTICAST_MSK; |
| |
| keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| keyconf->hw_key_idx = keyconf->keyidx; |
| key_flags &= ~STA_KEY_FLG_INVALID; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| priv->stations[sta_id].keyinfo.alg = keyconf->alg; |
| priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, |
| keyconf->keylen); |
| |
| memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, |
| keyconf->keylen); |
| |
| if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| == STA_KEY_FLG_NO_ENC) |
| priv->stations[sta_id].sta.key.key_offset = |
| iwl_get_free_ucode_key_index(priv); |
| /* else, we are overriding an existing key => no need to allocated room |
| * in uCode. */ |
| |
| WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
| "no space for a new key"); |
| |
| priv->stations[sta_id].sta.key.key_flags = key_flags; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n"); |
| |
| ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| return ret; |
| } |
| |
| static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key)); |
| memset(&priv->stations[sta_id].sta.key, 0, |
| sizeof(struct iwl4965_keyinfo)); |
| priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n"); |
| iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0); |
| return 0; |
| } |
| |
| static int iwl3945_set_dynamic_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, u8 sta_id) |
| { |
| int ret = 0; |
| |
| keyconf->hw_key_idx = HW_KEY_DYNAMIC; |
| |
| switch (keyconf->alg) { |
| case ALG_CCMP: |
| ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| case ALG_TKIP: |
| ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| case ALG_WEP: |
| ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| default: |
| IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg); |
| ret = -EINVAL; |
| } |
| |
| IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n", |
| keyconf->alg, keyconf->keylen, keyconf->keyidx, |
| sta_id, ret); |
| |
| return ret; |
| } |
| |
| static int iwl3945_remove_static_key(struct iwl_priv *priv) |
| { |
| int ret = -EOPNOTSUPP; |
| |
| return ret; |
| } |
| |
| static int iwl3945_set_static_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *key) |
| { |
| if (key->alg == ALG_WEP) |
| return -EOPNOTSUPP; |
| |
| IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg); |
| return -EINVAL; |
| } |
| |
| static void iwl3945_clear_free_frames(struct iwl_priv *priv) |
| { |
| struct list_head *element; |
| |
| IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n", |
| priv->frames_count); |
| |
| while (!list_empty(&priv->free_frames)) { |
| element = priv->free_frames.next; |
| list_del(element); |
| kfree(list_entry(element, struct iwl3945_frame, list)); |
| priv->frames_count--; |
| } |
| |
| if (priv->frames_count) { |
| IWL_WARN(priv, "%d frames still in use. Did we lose one?\n", |
| priv->frames_count); |
| priv->frames_count = 0; |
| } |
| } |
| |
| static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv) |
| { |
| struct iwl3945_frame *frame; |
| struct list_head *element; |
| if (list_empty(&priv->free_frames)) { |
| frame = kzalloc(sizeof(*frame), GFP_KERNEL); |
| if (!frame) { |
| IWL_ERR(priv, "Could not allocate frame!\n"); |
| return NULL; |
| } |
| |
| priv->frames_count++; |
| return frame; |
| } |
| |
| element = priv->free_frames.next; |
| list_del(element); |
| return list_entry(element, struct iwl3945_frame, list); |
| } |
| |
| static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame) |
| { |
| memset(frame, 0, sizeof(*frame)); |
| list_add(&frame->list, &priv->free_frames); |
| } |
| |
| unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv, |
| struct ieee80211_hdr *hdr, |
| int left) |
| { |
| |
| if (!iwl_is_associated(priv) || !priv->ibss_beacon || |
| ((priv->iw_mode != NL80211_IFTYPE_ADHOC) && |
| (priv->iw_mode != NL80211_IFTYPE_AP))) |
| return 0; |
| |
| if (priv->ibss_beacon->len > left) |
| return 0; |
| |
| memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len); |
| |
| return priv->ibss_beacon->len; |
| } |
| |
| static int iwl3945_send_beacon_cmd(struct iwl_priv *priv) |
| { |
| struct iwl3945_frame *frame; |
| unsigned int frame_size; |
| int rc; |
| u8 rate; |
| |
| frame = iwl3945_get_free_frame(priv); |
| |
| if (!frame) { |
| IWL_ERR(priv, "Could not obtain free frame buffer for beacon " |
| "command.\n"); |
| return -ENOMEM; |
| } |
| |
| rate = iwl_rate_get_lowest_plcp(priv); |
| |
| frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate); |
| |
| rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, |
| &frame->u.cmd[0]); |
| |
| iwl3945_free_frame(priv, frame); |
| |
| return rc; |
| } |
| |
| static void iwl3945_unset_hw_params(struct iwl_priv *priv) |
| { |
| if (priv->shared_virt) |
| pci_free_consistent(priv->pci_dev, |
| sizeof(struct iwl3945_shared), |
| priv->shared_virt, |
| priv->shared_phys); |
| } |
| |
| static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv, |
| struct ieee80211_tx_info *info, |
| struct iwl_device_cmd *cmd, |
| struct sk_buff *skb_frag, |
| int sta_id) |
| { |
| struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload; |
| struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; |
| |
| switch (keyinfo->alg) { |
| case ALG_CCMP: |
| tx->sec_ctl = TX_CMD_SEC_CCM; |
| memcpy(tx->key, keyinfo->key, keyinfo->keylen); |
| IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n"); |
| break; |
| |
| case ALG_TKIP: |
| break; |
| |
| case ALG_WEP: |
| tx->sec_ctl = TX_CMD_SEC_WEP | |
| (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT; |
| |
| if (keyinfo->keylen == 13) |
| tx->sec_ctl |= TX_CMD_SEC_KEY128; |
| |
| memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen); |
| |
| IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " |
| "with key %d\n", info->control.hw_key->hw_key_idx); |
| break; |
| |
| default: |
| IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg); |
| break; |
| } |
| } |
| |
| /* |
| * handle build REPLY_TX command notification. |
| */ |
| static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv, |
| struct iwl_device_cmd *cmd, |
| struct ieee80211_tx_info *info, |
| struct ieee80211_hdr *hdr, u8 std_id) |
| { |
| struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload; |
| __le32 tx_flags = tx->tx_flags; |
| __le16 fc = hdr->frame_control; |
| u8 rc_flags = info->control.rates[0].flags; |
| |
| tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { |
| tx_flags |= TX_CMD_FLG_ACK_MSK; |
| if (ieee80211_is_mgmt(fc)) |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| if (ieee80211_is_probe_resp(fc) && |
| !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) |
| tx_flags |= TX_CMD_FLG_TSF_MSK; |
| } else { |
| tx_flags &= (~TX_CMD_FLG_ACK_MSK); |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| } |
| |
| tx->sta_id = std_id; |
| if (ieee80211_has_morefrags(fc)) |
| tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; |
| |
| if (ieee80211_is_data_qos(fc)) { |
| u8 *qc = ieee80211_get_qos_ctl(hdr); |
| tx->tid_tspec = qc[0] & 0xf; |
| tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; |
| } else { |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| } |
| |
| if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
| tx_flags |= TX_CMD_FLG_RTS_MSK; |
| tx_flags &= ~TX_CMD_FLG_CTS_MSK; |
| } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| tx_flags |= TX_CMD_FLG_CTS_MSK; |
| } |
| |
| if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) |
| tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| |
| tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); |
| if (ieee80211_is_mgmt(fc)) { |
| if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) |
| tx->timeout.pm_frame_timeout = cpu_to_le16(3); |
| else |
| tx->timeout.pm_frame_timeout = cpu_to_le16(2); |
| } else { |
| tx->timeout.pm_frame_timeout = 0; |
| #ifdef CONFIG_IWLWIFI_LEDS |
| priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len); |
| #endif |
| } |
| |
| tx->driver_txop = 0; |
| tx->tx_flags = tx_flags; |
| tx->next_frame_len = 0; |
| } |
| |
| /* |
| * start REPLY_TX command process |
| */ |
| static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct iwl3945_tx_cmd *tx; |
| struct iwl_tx_queue *txq = NULL; |
| struct iwl_queue *q = NULL; |
| struct iwl_device_cmd *out_cmd; |
| struct iwl_cmd_meta *out_meta; |
| dma_addr_t phys_addr; |
| dma_addr_t txcmd_phys; |
| int txq_id = skb_get_queue_mapping(skb); |
| u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */ |
| u8 id; |
| u8 unicast; |
| u8 sta_id; |
| u8 tid = 0; |
| u16 seq_number = 0; |
| __le16 fc; |
| u8 wait_write_ptr = 0; |
| u8 *qc = NULL; |
| unsigned long flags; |
| int rc; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
| goto drop_unlock; |
| } |
| |
| if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) { |
| IWL_ERR(priv, "ERROR: No TX rate available.\n"); |
| goto drop_unlock; |
| } |
| |
| unicast = !is_multicast_ether_addr(hdr->addr1); |
| id = 0; |
| |
| fc = hdr->frame_control; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (ieee80211_is_auth(fc)) |
| IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); |
| else if (ieee80211_is_assoc_req(fc)) |
| IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); |
| else if (ieee80211_is_reassoc_req(fc)) |
| IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); |
| #endif |
| |
| /* drop all data frame if we are not associated */ |
| if (ieee80211_is_data(fc) && |
| (!iwl_is_monitor_mode(priv)) && /* packet injection */ |
| (!iwl_is_associated(priv) || |
| ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) { |
| IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n"); |
| goto drop_unlock; |
| } |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| hdr_len = ieee80211_hdrlen(fc); |
| |
| /* Find (or create) index into station table for destination station */ |
| sta_id = iwl_get_sta_id(priv, hdr); |
| if (sta_id == IWL_INVALID_STATION) { |
| IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", |
| hdr->addr1); |
| goto drop; |
| } |
| |
| IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id); |
| |
| if (ieee80211_is_data_qos(fc)) { |
| qc = ieee80211_get_qos_ctl(hdr); |
| tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; |
| seq_number = priv->stations[sta_id].tid[tid].seq_number & |
| IEEE80211_SCTL_SEQ; |
| hdr->seq_ctrl = cpu_to_le16(seq_number) | |
| (hdr->seq_ctrl & |
| cpu_to_le16(IEEE80211_SCTL_FRAG)); |
| seq_number += 0x10; |
| } |
| |
| /* Descriptor for chosen Tx queue */ |
| txq = &priv->txq[txq_id]; |
| q = &txq->q; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| idx = get_cmd_index(q, q->write_ptr, 0); |
| |
| /* Set up driver data for this TFD */ |
| memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info)); |
| txq->txb[q->write_ptr].skb[0] = skb; |
| |
| /* Init first empty entry in queue's array of Tx/cmd buffers */ |
| out_cmd = txq->cmd[idx]; |
| out_meta = &txq->meta[idx]; |
| tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload; |
| memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); |
| memset(tx, 0, sizeof(*tx)); |
| |
| /* |
| * Set up the Tx-command (not MAC!) header. |
| * Store the chosen Tx queue and TFD index within the sequence field; |
| * after Tx, uCode's Tx response will return this value so driver can |
| * locate the frame within the tx queue and do post-tx processing. |
| */ |
| out_cmd->hdr.cmd = REPLY_TX; |
| out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | |
| INDEX_TO_SEQ(q->write_ptr))); |
| |
| /* Copy MAC header from skb into command buffer */ |
| memcpy(tx->hdr, hdr, hdr_len); |
| |
| |
| if (info->control.hw_key) |
| iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id); |
| |
| /* TODO need this for burst mode later on */ |
| iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id); |
| |
| /* set is_hcca to 0; it probably will never be implemented */ |
| iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0); |
| |
| /* Total # bytes to be transmitted */ |
| len = (u16)skb->len; |
| tx->len = cpu_to_le16(len); |
| |
| iwl_dbg_log_tx_data_frame(priv, len, hdr); |
| iwl_update_stats(priv, true, fc, len); |
| tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; |
| tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; |
| |
| if (!ieee80211_has_morefrags(hdr->frame_control)) { |
| txq->need_update = 1; |
| if (qc) |
| priv->stations[sta_id].tid[tid].seq_number = seq_number; |
| } else { |
| wait_write_ptr = 1; |
| txq->need_update = 0; |
| } |
| |
| IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n", |
| le16_to_cpu(out_cmd->hdr.sequence)); |
| IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags)); |
| iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx)); |
| iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr, |
| ieee80211_hdrlen(fc)); |
| |
| /* |
| * Use the first empty entry in this queue's command buffer array |
| * to contain the Tx command and MAC header concatenated together |
| * (payload data will be in another buffer). |
| * Size of this varies, due to varying MAC header length. |
| * If end is not dword aligned, we'll have 2 extra bytes at the end |
| * of the MAC header (device reads on dword boundaries). |
| * We'll tell device about this padding later. |
| */ |
| len = sizeof(struct iwl3945_tx_cmd) + |
| sizeof(struct iwl_cmd_header) + hdr_len; |
| |
| len_org = len; |
| len = (len + 3) & ~3; |
| |
| if (len_org != len) |
| len_org = 1; |
| else |
| len_org = 0; |
| |
| /* Physical address of this Tx command's header (not MAC header!), |
| * within command buffer array. */ |
| txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr, |
| len, PCI_DMA_TODEVICE); |
| /* we do not map meta data ... so we can safely access address to |
| * provide to unmap command*/ |
| pci_unmap_addr_set(out_meta, mapping, txcmd_phys); |
| pci_unmap_len_set(out_meta, len, len); |
| |
| /* Add buffer containing Tx command and MAC(!) header to TFD's |
| * first entry */ |
| priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq, |
| txcmd_phys, len, 1, 0); |
| |
| |
| /* Set up TFD's 2nd entry to point directly to remainder of skb, |
| * if any (802.11 null frames have no payload). */ |
| len = skb->len - hdr_len; |
| if (len) { |
| phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, |
| len, PCI_DMA_TODEVICE); |
| priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq, |
| phys_addr, len, |
| 0, U32_PAD(len)); |
| } |
| |
| |
| /* Tell device the write index *just past* this latest filled TFD */ |
| q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); |
| rc = iwl_txq_update_write_ptr(priv, txq); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (rc) |
| return rc; |
| |
| if ((iwl_queue_space(q) < q->high_mark) |
| && priv->mac80211_registered) { |
| if (wait_write_ptr) { |
| spin_lock_irqsave(&priv->lock, flags); |
| txq->need_update = 1; |
| iwl_txq_update_write_ptr(priv, txq); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| iwl_stop_queue(priv, skb_get_queue_mapping(skb)); |
| } |
| |
| return 0; |
| |
| drop_unlock: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| drop: |
| return -1; |
| } |
| |
| #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT |
| |
| #include "iwl-spectrum.h" |
| |
| #define BEACON_TIME_MASK_LOW 0x00FFFFFF |
| #define BEACON_TIME_MASK_HIGH 0xFF000000 |
| #define TIME_UNIT 1024 |
| |
| /* |
| * extended beacon time format |
| * time in usec will be changed into a 32-bit value in 8:24 format |
| * the high 1 byte is the beacon counts |
| * the lower 3 bytes is the time in usec within one beacon interval |
| */ |
| |
| static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval) |
| { |
| u32 quot; |
| u32 rem; |
| u32 interval = beacon_interval * 1024; |
| |
| if (!interval || !usec) |
| return 0; |
| |
| quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24); |
| rem = (usec % interval) & BEACON_TIME_MASK_LOW; |
| |
| return (quot << 24) + rem; |
| } |
| |
| /* base is usually what we get from ucode with each received frame, |
| * the same as HW timer counter counting down |
| */ |
| |
| static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval) |
| { |
| u32 base_low = base & BEACON_TIME_MASK_LOW; |
| u32 addon_low = addon & BEACON_TIME_MASK_LOW; |
| u32 interval = beacon_interval * TIME_UNIT; |
| u32 res = (base & BEACON_TIME_MASK_HIGH) + |
| (addon & BEACON_TIME_MASK_HIGH); |
| |
| if (base_low > addon_low) |
| res += base_low - addon_low; |
| else if (base_low < addon_low) { |
| res += interval + base_low - addon_low; |
| res += (1 << 24); |
| } else |
| res += (1 << 24); |
| |
| return cpu_to_le32(res); |
| } |
| |
| static int iwl3945_get_measurement(struct iwl_priv *priv, |
| struct ieee80211_measurement_params *params, |
| u8 type) |
| { |
| struct iwl_spectrum_cmd spectrum; |
| struct iwl_rx_packet *res; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SPECTRUM_MEASUREMENT_CMD, |
| .data = (void *)&spectrum, |
| .flags = CMD_WANT_SKB, |
| }; |
| u32 add_time = le64_to_cpu(params->start_time); |
| int rc; |
| int spectrum_resp_status; |
| int duration = le16_to_cpu(params->duration); |
| |
| if (iwl_is_associated(priv)) |
| add_time = |
| iwl3945_usecs_to_beacons( |
| le64_to_cpu(params->start_time) - priv->last_tsf, |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| |
| memset(&spectrum, 0, sizeof(spectrum)); |
| |
| spectrum.channel_count = cpu_to_le16(1); |
| spectrum.flags = |
| RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; |
| spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; |
| cmd.len = sizeof(spectrum); |
| spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); |
| |
| if (iwl_is_associated(priv)) |
| spectrum.start_time = |
| iwl3945_add_beacon_time(priv->last_beacon_time, |
| add_time, |
| le16_to_cpu(priv->rxon_timing.beacon_interval)); |
| else |
| spectrum.start_time = 0; |
| |
| spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); |
| spectrum.channels[0].channel = params->channel; |
| spectrum.channels[0].type = type; |
| if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK) |
| spectrum.flags |= RXON_FLG_BAND_24G_MSK | |
| RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK; |
| |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) |
| return rc; |
| |
| res = (struct iwl_rx_packet *)cmd.reply_skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n"); |
| rc = -EIO; |
| } |
| |
| spectrum_resp_status = le16_to_cpu(res->u.spectrum.status); |
| switch (spectrum_resp_status) { |
| case 0: /* Command will be handled */ |
| if (res->u.spectrum.id != 0xff) { |
| IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n", |
| res->u.spectrum.id); |
| priv->measurement_status &= ~MEASUREMENT_READY; |
| } |
| priv->measurement_status |= MEASUREMENT_ACTIVE; |
| rc = 0; |
| break; |
| |
| case 1: /* Command will not be handled */ |
| rc = -EAGAIN; |
| break; |
| } |
| |
| dev_kfree_skb_any(cmd.reply_skb); |
| |
| return rc; |
| } |
| #endif |
| |
| static void iwl3945_rx_reply_alive(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl_alive_resp *palive; |
| struct delayed_work *pwork; |
| |
| palive = &pkt->u.alive_frame; |
| |
| IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision " |
| "0x%01X 0x%01X\n", |
| palive->is_valid, palive->ver_type, |
| palive->ver_subtype); |
| |
| if (palive->ver_subtype == INITIALIZE_SUBTYPE) { |
| IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); |
| memcpy(&priv->card_alive_init, &pkt->u.alive_frame, |
| sizeof(struct iwl_alive_resp)); |
| pwork = &priv->init_alive_start; |
| } else { |
| IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); |
| memcpy(&priv->card_alive, &pkt->u.alive_frame, |
| sizeof(struct iwl_alive_resp)); |
| pwork = &priv->alive_start; |
| iwl3945_disable_events(priv); |
| } |
| |
| /* We delay the ALIVE response by 5ms to |
| * give the HW RF Kill time to activate... */ |
| if (palive->is_valid == UCODE_VALID_OK) |
| queue_delayed_work(priv->workqueue, pwork, |
| msecs_to_jiffies(5)); |
| else |
| IWL_WARN(priv, "uCode did not respond OK.\n"); |
| } |
| |
| static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| #endif |
| |
| IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); |
| return; |
| } |
| |
| static void iwl3945_bg_beacon_update(struct work_struct *work) |
| { |
| struct iwl_priv *priv = |
| container_of(work, struct iwl_priv, beacon_update); |
| struct sk_buff *beacon; |
| |
| /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ |
| beacon = ieee80211_beacon_get(priv->hw, priv->vif); |
| |
| if (!beacon) { |
| IWL_ERR(priv, "update beacon failed\n"); |
| return; |
| } |
| |
| mutex_lock(&priv->mutex); |
| /* new beacon skb is allocated every time; dispose previous.*/ |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| priv->ibss_beacon = beacon; |
| mutex_unlock(&priv->mutex); |
| |
| iwl3945_send_beacon_cmd(priv); |
| } |
| |
| static void iwl3945_rx_beacon_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status); |
| u8 rate = beacon->beacon_notify_hdr.rate; |
| |
| IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d " |
| "tsf %d %d rate %d\n", |
| le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, |
| beacon->beacon_notify_hdr.failure_frame, |
| le32_to_cpu(beacon->ibss_mgr_status), |
| le32_to_cpu(beacon->high_tsf), |
| le32_to_cpu(beacon->low_tsf), rate); |
| #endif |
| |
| if ((priv->iw_mode == NL80211_IFTYPE_AP) && |
| (!test_bit(STATUS_EXIT_PENDING, &priv->status))) |
| queue_work(priv->workqueue, &priv->beacon_update); |
| } |
| |
| /* Handle notification from uCode that card's power state is changing |
| * due to software, hardware, or critical temperature RFKILL */ |
| static void iwl3945_rx_card_state_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = (void *)rxb->skb->data; |
| u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
| unsigned long status = priv->status; |
| |
| IWL_WARN(priv, "Card state received: HW:%s SW:%s\n", |
| (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
| (flags & SW_CARD_DISABLED) ? "Kill" : "On"); |
| |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| if (flags & HW_CARD_DISABLED) |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| else |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| |
| iwl_scan_cancel(priv); |
| |
| if ((test_bit(STATUS_RF_KILL_HW, &status) != |
| test_bit(STATUS_RF_KILL_HW, &priv->status))) |
| wiphy_rfkill_set_hw_state(priv->hw->wiphy, |
| test_bit(STATUS_RF_KILL_HW, &priv->status)); |
| else |
| wake_up_interruptible(&priv->wait_command_queue); |
| } |
| |
| /** |
| * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks |
| * |
| * Setup the RX handlers for each of the reply types sent from the uCode |
| * to the host. |
| * |
| * This function chains into the hardware specific files for them to setup |
| * any hardware specific handlers as well. |
| */ |
| static void iwl3945_setup_rx_handlers(struct iwl_priv *priv) |
| { |
| priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive; |
| priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta; |
| priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error; |
| priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa; |
| priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif; |
| priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = |
| iwl_rx_pm_debug_statistics_notif; |
| priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif; |
| |
| /* |
| * The same handler is used for both the REPLY to a discrete |
| * statistics request from the host as well as for the periodic |
| * statistics notifications (after received beacons) from the uCode. |
| */ |
| priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics; |
| priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics; |
| |
| iwl_setup_spectrum_handlers(priv); |
| iwl_setup_rx_scan_handlers(priv); |
| priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif; |
| |
| /* Set up hardware specific Rx handlers */ |
| iwl3945_hw_rx_handler_setup(priv); |
| } |
| |
| /************************** RX-FUNCTIONS ****************************/ |
| /* |
| * Rx theory of operation |
| * |
| * The host allocates 32 DMA target addresses and passes the host address |
| * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is |
| * 0 to 31 |
| * |
| * Rx Queue Indexes |
| * The host/firmware share two index registers for managing the Rx buffers. |
| * |
| * The READ index maps to the first position that the firmware may be writing |
| * to -- the driver can read up to (but not including) this position and get |
| * good data. |
| * The READ index is managed by the firmware once the card is enabled. |
| * |
| * The WRITE index maps to the last position the driver has read from -- the |
| * position preceding WRITE is the last slot the firmware can place a packet. |
| * |
| * The queue is empty (no good data) if WRITE = READ - 1, and is full if |
| * WRITE = READ. |
| * |
| * During initialization, the host sets up the READ queue position to the first |
| * INDEX position, and WRITE to the last (READ - 1 wrapped) |
| * |
| * When the firmware places a packet in a buffer, it will advance the READ index |
| * and fire the RX interrupt. The driver can then query the READ index and |
| * process as many packets as possible, moving the WRITE index forward as it |
| * resets the Rx queue buffers with new memory. |
| * |
| * The management in the driver is as follows: |
| * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When |
| * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled |
| * to replenish the iwl->rxq->rx_free. |
| * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the |
| * iwl->rxq is replenished and the READ INDEX is updated (updating the |
| * 'processed' and 'read' driver indexes as well) |
| * + A received packet is processed and handed to the kernel network stack, |
| * detached from the iwl->rxq. The driver 'processed' index is updated. |
| * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free |
| * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ |
| * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there |
| * were enough free buffers and RX_STALLED is set it is cleared. |
| * |
| * |
| * Driver sequence: |
| * |
| * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls |
| * iwl3945_rx_queue_restock |
| * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx |
| * queue, updates firmware pointers, and updates |
| * the WRITE index. If insufficient rx_free buffers |
| * are available, schedules iwl3945_rx_replenish |
| * |
| * -- enable interrupts -- |
| * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the |
| * READ INDEX, detaching the SKB from the pool. |
| * Moves the packet buffer from queue to rx_used. |
| * Calls iwl3945_rx_queue_restock to refill any empty |
| * slots. |
| * ... |
| * |
| */ |
| |
| /** |
| * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
| */ |
| static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv, |
| dma_addr_t dma_addr) |
| { |
| return cpu_to_le32((u32)dma_addr); |
| } |
| |
| /** |
| * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool |
| * |
| * If there are slots in the RX queue that need to be restocked, |
| * and we have free pre-allocated buffers, fill the ranks as much |
| * as we can, pulling from rx_free. |
| * |
| * This moves the 'write' index forward to catch up with 'processed', and |
| * also updates the memory address in the firmware to reference the new |
| * target buffer. |
| */ |
| static int iwl3945_rx_queue_restock(struct iwl_priv *priv) |
| { |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| struct list_head *element; |
| struct iwl_rx_mem_buffer *rxb; |
| unsigned long flags; |
| int write, rc; |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| write = rxq->write & ~0x7; |
| while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { |
| /* Get next free Rx buffer, remove from free list */ |
| element = rxq->rx_free.next; |
| rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| list_del(element); |
| |
| /* Point to Rx buffer via next RBD in circular buffer */ |
| rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr); |
| rxq->queue[rxq->write] = rxb; |
| rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; |
| rxq->free_count--; |
| } |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| /* If the pre-allocated buffer pool is dropping low, schedule to |
| * refill it */ |
| if (rxq->free_count <= RX_LOW_WATERMARK) |
| queue_work(priv->workqueue, &priv->rx_replenish); |
| |
| |
| /* If we've added more space for the firmware to place data, tell it. |
| * Increment device's write pointer in multiples of 8. */ |
| if ((rxq->write_actual != (rxq->write & ~0x7)) |
| || (abs(rxq->write - rxq->read) > 7)) { |
| spin_lock_irqsave(&rxq->lock, flags); |
| rxq->need_update = 1; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| rc = iwl_rx_queue_update_write_ptr(priv, rxq); |
| if (rc) |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free |
| * |
| * When moving to rx_free an SKB is allocated for the slot. |
| * |
| * Also restock the Rx queue via iwl3945_rx_queue_restock. |
| * This is called as a scheduled work item (except for during initialization) |
| */ |
| static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority) |
| { |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| struct list_head *element; |
| struct iwl_rx_mem_buffer *rxb; |
| unsigned long flags; |
| |
| while (1) { |
| spin_lock_irqsave(&rxq->lock, flags); |
| |
| if (list_empty(&rxq->rx_used)) { |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| return; |
| } |
| |
| element = rxq->rx_used.next; |
| rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| list_del(element); |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| |
| /* Alloc a new receive buffer */ |
| rxb->skb = |
| alloc_skb(priv->hw_params.rx_buf_size, |
| priority); |
| if (!rxb->skb) { |
| if (net_ratelimit()) |
| IWL_CRIT(priv, ": Can not allocate SKB buffers\n"); |
| /* We don't reschedule replenish work here -- we will |
| * call the restock method and if it still needs |
| * more buffers it will schedule replenish */ |
| break; |
| } |
| |
| /* If radiotap head is required, reserve some headroom here. |
| * The physical head count is a variable rx_stats->phy_count. |
| * We reserve 4 bytes here. Plus these extra bytes, the |
| * headroom of the physical head should be enough for the |
| * radiotap head that iwl3945 supported. See iwl3945_rt. |
| */ |
| skb_reserve(rxb->skb, 4); |
| |
| /* Get physical address of RB/SKB */ |
| rxb->real_dma_addr = pci_map_single(priv->pci_dev, |
| rxb->skb->data, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| list_add_tail(&rxb->list, &rxq->rx_free); |
| priv->alloc_rxb_skb++; |
| rxq->free_count++; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| } |
| } |
| |
| void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| { |
| unsigned long flags; |
| int i; |
| spin_lock_irqsave(&rxq->lock, flags); |
| INIT_LIST_HEAD(&rxq->rx_free); |
| INIT_LIST_HEAD(&rxq->rx_used); |
| /* Fill the rx_used queue with _all_ of the Rx buffers */ |
| for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { |
| /* In the reset function, these buffers may have been allocated |
| * to an SKB, so we need to unmap and free potential storage */ |
| if (rxq->pool[i].skb != NULL) { |
| pci_unmap_single(priv->pci_dev, |
| rxq->pool[i].real_dma_addr, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb(rxq->pool[i].skb); |
| rxq->pool[i].skb = NULL; |
| } |
| list_add_tail(&rxq->pool[i].list, &rxq->rx_used); |
| } |
| |
| /* Set us so that we have processed and used all buffers, but have |
| * not restocked the Rx queue with fresh buffers */ |
| rxq->read = rxq->write = 0; |
| rxq->free_count = 0; |
| rxq->write_actual = 0; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| } |
| |
| void iwl3945_rx_replenish(void *data) |
| { |
| struct iwl_priv *priv = data; |
| unsigned long flags; |
| |
| iwl3945_rx_allocate(priv, GFP_KERNEL); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl3945_rx_queue_restock(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static void iwl3945_rx_replenish_now(struct iwl_priv *priv) |
| { |
| iwl3945_rx_allocate(priv, GFP_ATOMIC); |
| |
| iwl3945_rx_queue_restock(priv); |
| } |
| |
| |
| /* Assumes that the skb field of the buffers in 'pool' is kept accurate. |
| * If an SKB has been detached, the POOL needs to have its SKB set to NULL |
| * This free routine walks the list of POOL entries and if SKB is set to |
| * non NULL it is unmapped and freed |
| */ |
| static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| { |
| int i; |
| for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { |
| if (rxq->pool[i].skb != NULL) { |
| pci_unmap_single(priv->pci_dev, |
| rxq->pool[i].real_dma_addr, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(rxq->pool[i].skb); |
| } |
| } |
| |
| pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
| rxq->dma_addr); |
| pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status), |
| rxq->rb_stts, rxq->rb_stts_dma); |
| rxq->bd = NULL; |
| rxq->rb_stts = NULL; |
| } |
| |
| |
| /* Convert linear signal-to-noise ratio into dB */ |
| static u8 ratio2dB[100] = { |
| /* 0 1 2 3 4 5 6 7 8 9 */ |
| 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ |
| 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ |
| 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ |
| 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ |
| 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ |
| 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ |
| 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ |
| 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ |
| 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ |
| 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ |
| }; |
| |
| /* Calculates a relative dB value from a ratio of linear |
| * (i.e. not dB) signal levels. |
| * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ |
| int iwl3945_calc_db_from_ratio(int sig_ratio) |
| { |
| /* 1000:1 or higher just report as 60 dB */ |
| if (sig_ratio >= 1000) |
| return 60; |
| |
| /* 100:1 or higher, divide by 10 and use table, |
| * add 20 dB to make up for divide by 10 */ |
| if (sig_ratio >= 100) |
| return 20 + (int)ratio2dB[sig_ratio/10]; |
| |
| /* We shouldn't see this */ |
| if (sig_ratio < 1) |
| return 0; |
| |
| /* Use table for ratios 1:1 - 99:1 */ |
| return (int)ratio2dB[sig_ratio]; |
| } |
| |
| #define PERFECT_RSSI (-20) /* dBm */ |
| #define WORST_RSSI (-95) /* dBm */ |
| #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) |
| |
| /* Calculate an indication of rx signal quality (a percentage, not dBm!). |
| * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info |
| * about formulas used below. */ |
| int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm) |
| { |
| int sig_qual; |
| int degradation = PERFECT_RSSI - rssi_dbm; |
| |
| /* If we get a noise measurement, use signal-to-noise ratio (SNR) |
| * as indicator; formula is (signal dbm - noise dbm). |
| * SNR at or above 40 is a great signal (100%). |
| * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. |
| * Weakest usable signal is usually 10 - 15 dB SNR. */ |
| if (noise_dbm) { |
| if (rssi_dbm - noise_dbm >= 40) |
| return 100; |
| else if (rssi_dbm < noise_dbm) |
| return 0; |
| sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; |
| |
| /* Else use just the signal level. |
| * This formula is a least squares fit of data points collected and |
| * compared with a reference system that had a percentage (%) display |
| * for signal quality. */ |
| } else |
| sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * |
| (15 * RSSI_RANGE + 62 * degradation)) / |
| (RSSI_RANGE * RSSI_RANGE); |
| |
| if (sig_qual > 100) |
| sig_qual = 100; |
| else if (sig_qual < 1) |
| sig_qual = 0; |
| |
| return sig_qual; |
| } |
| |
| /** |
| * iwl3945_rx_handle - Main entry function for receiving responses from uCode |
| * |
| * Uses the priv->rx_handlers callback function array to invoke |
| * the appropriate handlers, including command responses, |
| * frame-received notifications, and other notifications. |
| */ |
| static void iwl3945_rx_handle(struct iwl_priv *priv) |
| { |
| struct iwl_rx_mem_buffer *rxb; |
| struct iwl_rx_packet *pkt; |
| struct iwl_rx_queue *rxq = &priv->rxq; |
| u32 r, i; |
| int reclaim; |
| unsigned long flags; |
| u8 fill_rx = 0; |
| u32 count = 8; |
| int total_empty = 0; |
| |
| /* uCode's read index (stored in shared DRAM) indicates the last Rx |
| * buffer that the driver may process (last buffer filled by ucode). */ |
| r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; |
| i = rxq->read; |
| |
| /* calculate total frames need to be restock after handling RX */ |
| total_empty = r - priv->rxq.write_actual; |
| if (total_empty < 0) |
| total_empty += RX_QUEUE_SIZE; |
| |
| if (total_empty > (RX_QUEUE_SIZE / 2)) |
| fill_rx = 1; |
| /* Rx interrupt, but nothing sent from uCode */ |
| if (i == r) |
| IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i); |
| |
| while (i != r) { |
| rxb = rxq->queue[i]; |
| |
| /* If an RXB doesn't have a Rx queue slot associated with it, |
| * then a bug has been introduced in the queue refilling |
| * routines -- catch it here */ |
| BUG_ON(rxb == NULL); |
| |
| rxq->queue[i] = NULL; |
| |
| pci_unmap_single(priv->pci_dev, rxb->real_dma_addr, |
| priv->hw_params.rx_buf_size, |
| PCI_DMA_FROMDEVICE); |
| pkt = (struct iwl_rx_packet *)rxb->skb->data; |
| |
| /* Reclaim a command buffer only if this packet is a response |
| * to a (driver-originated) command. |
| * If the packet (e.g. Rx frame) originated from uCode, |
| * there is no command buffer to reclaim. |
| * Ucode should set SEQ_RX_FRAME bit if ucode-originated, |
| * but apparently a few don't get set; catch them here. */ |
| reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && |
| (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && |
| (pkt->hdr.cmd != REPLY_TX); |
| |
| /* Based on type of command response or notification, |
| * handle those that need handling via function in |
| * rx_handlers table. See iwl3945_setup_rx_handlers() */ |
| if (priv->rx_handlers[pkt->hdr.cmd]) { |
| IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR, |
| "r = %d, i = %d, %s, 0x%02x\n", r, i, |
| get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); |
| priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); |
| priv->isr_stats.rx_handlers[pkt->hdr.cmd]++; |
| } else { |
| /* No handling needed */ |
| IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR, |
| "r %d i %d No handler needed for %s, 0x%02x\n", |
| r, i, get_cmd_string(pkt->hdr.cmd), |
| pkt->hdr.cmd); |
| } |
| |
| if (reclaim) { |
| /* Invoke any callbacks, transfer the skb to caller, and |
| * fire off the (possibly) blocking iwl_send_cmd() |
| * as we reclaim the driver command queue */ |
| if (rxb && rxb->skb) |
| iwl_tx_cmd_complete(priv, rxb); |
| else |
| IWL_WARN(priv, "Claim null rxb?\n"); |
| } |
| |
| /* For now we just don't re-use anything. We can tweak this |
| * later to try and re-use notification packets and SKBs that |
| * fail to Rx correctly */ |
| if (rxb->skb != NULL) { |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(rxb->skb); |
| rxb->skb = NULL; |
| } |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| list_add_tail(&rxb->list, &priv->rxq.rx_used); |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| i = (i + 1) & RX_QUEUE_MASK; |
| /* If there are a lot of unused frames, |
| * restock the Rx queue so ucode won't assert. */ |
| if (fill_rx) { |
| count++; |
| if (count >= 8) { |
| priv->rxq.read = i; |
| iwl3945_rx_replenish_now(priv); |
| count = 0; |
| } |
| } |
| } |
| |
| /* Backtrack one entry */ |
| priv->rxq.read = i; |
| if (fill_rx) |
| iwl3945_rx_replenish_now(priv); |
| else |
| iwl3945_rx_queue_restock(priv); |
| } |
| |
| /* call this function to flush any scheduled tasklet */ |
| static inline void iwl_synchronize_irq(struct iwl_priv *priv) |
| { |
| /* wait to make sure we flush pending tasklet*/ |
| synchronize_irq(priv->pci_dev->irq); |
| tasklet_kill(&priv->irq_tasklet); |
| } |
| |
| static const char *desc_lookup(int i) |
| { |
| switch (i) { |
| case 1: |
| return "FAIL"; |
| case 2: |
| return "BAD_PARAM"; |
| case 3: |
| return "BAD_CHECKSUM"; |
| case 4: |
| return "NMI_INTERRUPT"; |
| case 5: |
| return "SYSASSERT"; |
| case 6: |
| return "FATAL_ERROR"; |
| } |
| |
| return "UNKNOWN"; |
| } |
| |
| #define ERROR_START_OFFSET (1 * sizeof(u32)) |
| #define ERROR_ELEM_SIZE (7 * sizeof(u32)) |
| |
| static void iwl3945_dump_nic_error_log(struct iwl_priv *priv) |
| { |
| u32 i; |
| u32 desc, time, count, base, data1; |
| u32 blink1, blink2, ilink1, ilink2; |
| |
| base = le32_to_cpu(priv->card_alive.error_event_table_ptr); |
| |
| if (!iwl3945_hw_valid_rtc_data_addr(base)) { |
| IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| |
| count = iwl_read_targ_mem(priv, base); |
| |
| if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { |
| IWL_ERR(priv, "Start IWL Error Log Dump:\n"); |
| IWL_ERR(priv, "Status: 0x%08lX, count: %d\n", |
| priv->status, count); |
| } |
| |
| IWL_ERR(priv, "Desc Time asrtPC blink2 " |
| "ilink1 nmiPC Line\n"); |
| for (i = ERROR_START_OFFSET; |
| i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; |
| i += ERROR_ELEM_SIZE) { |
| desc = iwl_read_targ_mem(priv, base + i); |
| time = |
| iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32)); |
| blink1 = |
| iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32)); |
| blink2 = |
| iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32)); |
| ilink1 = |
| iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32)); |
| ilink2 = |
| iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32)); |
| data1 = |
| iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32)); |
| |
| IWL_ERR(priv, |
| "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", |
| desc_lookup(desc), desc, time, blink1, blink2, |
| ilink1, ilink2, data1); |
| } |
| |
| } |
| |
| #define EVENT_START_OFFSET (6 * sizeof(u32)) |
| |
| /** |
| * iwl3945_print_event_log - Dump error event log to syslog |
| * |
| */ |
| static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx, |
| u32 num_events, u32 mode) |
| { |
| u32 i; |
| u32 base; /* SRAM byte address of event log header */ |
| u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ |
| u32 ptr; /* SRAM byte address of log data */ |
| u32 ev, time, data; /* event log data */ |
| |
| if (num_events == 0) |
| return; |
| |
| base = le32_to_cpu(priv->card_alive.log_event_table_ptr); |
| |
| if (mode == 0) |
| event_size = 2 * sizeof(u32); |
| else |
| event_size = 3 * sizeof(u32); |
| |
| ptr = base + EVENT_START_OFFSET + (start_idx * event_size); |
| |
| /* "time" is actually "data" for mode 0 (no timestamp). |
| * place event id # at far right for easier visual parsing. */ |
| for (i = 0; i < num_events; i++) { |
| ev = iwl_read_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| time = iwl_read_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| if (mode == 0) { |
| /* data, ev */ |
| IWL_ERR(priv, "0x%08x\t%04u\n", time, ev); |
| } else { |
| data = iwl_read_targ_mem(priv, ptr); |
| ptr += sizeof(u32); |
| IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev); |
| } |
| } |
| } |
| |
| static void iwl3945_dump_nic_event_log(struct iwl_priv *priv) |
| { |
| u32 base; /* SRAM byte address of event log header */ |
| u32 capacity; /* event log capacity in # entries */ |
| u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ |
| u32 num_wraps; /* # times uCode wrapped to top of log */ |
| u32 next_entry; /* index of next entry to be written by uCode */ |
| u32 size; /* # entries that we'll print */ |
| |
| base = le32_to_cpu(priv->card_alive.log_event_table_ptr); |
| if (!iwl3945_hw_valid_rtc_data_addr(base)) { |
| IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| /* event log header */ |
| capacity = iwl_read_targ_mem(priv, base); |
| mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); |
| num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); |
| next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); |
| |
| size = num_wraps ? capacity : next_entry; |
| |
| /* bail out if nothing in log */ |
| if (size == 0) { |
| IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n"); |
| return; |
| } |
| |
| IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n", |
| size, num_wraps); |
| |
| /* if uCode has wrapped back to top of log, start at the oldest entry, |
| * i.e the next one that uCode would fill. */ |
| if (num_wraps) |
| iwl3945_print_event_log(priv, next_entry, |
| capacity - next_entry, mode); |
| |
| /* (then/else) start at top of log */ |
| iwl3945_print_event_log(priv, 0, next_entry, mode); |
| |
| } |
| |
| static void iwl3945_irq_tasklet(struct iwl_priv *priv) |
| { |
| u32 inta, handled = 0; |
| u32 inta_fh; |
| unsigned long flags; |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| u32 inta_mask; |
| #endif |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* Ack/clear/reset pending uCode interrupts. |
| * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, |
| * and will clear only when CSR_FH_INT_STATUS gets cleared. */ |
| inta = iwl_read32(priv, CSR_INT); |
| iwl_write32(priv, CSR_INT, inta); |
| |
| /* Ack/clear/reset pending flow-handler (DMA) interrupts. |
| * Any new interrupts that happen after this, either while we're |
| * in this tasklet, or later, will show up in next ISR/tasklet. */ |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_get_debug_level(priv) & IWL_DL_ISR) { |
| /* just for debug */ |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); |
| IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
| inta, inta_mask, inta_fh); |
| } |
| #endif |
| |
| /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not |
| * atomic, make sure that inta covers all the interrupts that |
| * we've discovered, even if FH interrupt came in just after |
| * reading CSR_INT. */ |
| if (inta_fh & CSR39_FH_INT_RX_MASK) |
| inta |= CSR_INT_BIT_FH_RX; |
| if (inta_fh & CSR39_FH_INT_TX_MASK) |
| inta |= CSR_INT_BIT_FH_TX; |
| |
| /* Now service all interrupt bits discovered above. */ |
| if (inta & CSR_INT_BIT_HW_ERR) { |
| IWL_ERR(priv, "Hardware error detected. Restarting.\n"); |
| |
| /* Tell the device to stop sending interrupts */ |
| iwl_disable_interrupts(priv); |
| |
| priv->isr_stats.hw++; |
| iwl_irq_handle_error(priv); |
| |
| handled |= CSR_INT_BIT_HW_ERR; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { |
| /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
| if (inta & CSR_INT_BIT_SCD) { |
| IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " |
| "the frame/frames.\n"); |
| priv->isr_stats.sch++; |
| } |
| |
| /* Alive notification via Rx interrupt will do the real work */ |
| if (inta & CSR_INT_BIT_ALIVE) { |
| IWL_DEBUG_ISR(priv, "Alive interrupt\n"); |
| priv->isr_stats.alive++; |
| } |
| } |
| #endif |
| /* Safely ignore these bits for debug checks below */ |
| inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); |
| |
| /* Error detected by uCode */ |
| if (inta & CSR_INT_BIT_SW_ERR) { |
| IWL_ERR(priv, "Microcode SW error detected. " |
| "Restarting 0x%X.\n", inta); |
| priv->isr_stats.sw++; |
| priv->isr_stats.sw_err = inta; |
| iwl_irq_handle_error(priv); |
| handled |= CSR_INT_BIT_SW_ERR; |
| } |
| |
| /* uCode wakes up after power-down sleep */ |
| if (inta & CSR_INT_BIT_WAKEUP) { |
| IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); |
| iwl_rx_queue_update_write_ptr(priv, &priv->rxq); |
| iwl_txq_update_write_ptr(priv, &priv->txq[0]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[1]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[2]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[3]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[4]); |
| iwl_txq_update_write_ptr(priv, &priv->txq[5]); |
| |
| priv->isr_stats.wakeup++; |
| handled |= CSR_INT_BIT_WAKEUP; |
| } |
| |
| /* All uCode command responses, including Tx command responses, |
| * Rx "responses" (frame-received notification), and other |
| * notifications from uCode come through here*/ |
| if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { |
| iwl3945_rx_handle(priv); |
| priv->isr_stats.rx++; |
| handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
| } |
| |
| if (inta & CSR_INT_BIT_FH_TX) { |
| IWL_DEBUG_ISR(priv, "Tx interrupt\n"); |
| priv->isr_stats.tx++; |
| |
| iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6)); |
| iwl_write_direct32(priv, FH39_TCSR_CREDIT |
| (FH39_SRVC_CHNL), 0x0); |
| handled |= CSR_INT_BIT_FH_TX; |
| } |
| |
| if (inta & ~handled) { |
| IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); |
| priv->isr_stats.unhandled++; |
| } |
| |
| if (inta & ~priv->inta_mask) { |
| IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", |
| inta & ~priv->inta_mask); |
| IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh); |
| } |
| |
| /* Re-enable all interrupts */ |
| /* only Re-enable if disabled by irq */ |
| if (test_bit(STATUS_INT_ENABLED, &priv->status)) |
| iwl_enable_interrupts(priv); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { |
| inta = iwl_read32(priv, CSR_INT); |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " |
| "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); |
| } |
| #endif |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static int iwl3945_get_channels_for_scan(struct iwl_priv *priv, |
| enum ieee80211_band band, |
| u8 is_active, u8 n_probes, |
| struct iwl3945_scan_channel *scan_ch) |
| { |
| struct ieee80211_channel *chan; |
| const struct ieee80211_supported_band *sband; |
| const struct iwl_channel_info *ch_info; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added, i; |
| |
| sband = iwl_get_hw_mode(priv, band); |
| if (!sband) |
| return 0; |
| |
| active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); |
| passive_dwell = iwl_get_passive_dwell_time(priv, band); |
| |
| if (passive_dwell <= active_dwell) |
| passive_dwell = active_dwell + 1; |
| |
| for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { |
| chan = priv->scan_request->channels[i]; |
| |
| if (chan->band != band) |
| continue; |
| |
| scan_ch->channel = chan->hw_value; |
| |
| ch_info = iwl_get_channel_info(priv, band, scan_ch->channel); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", |
| scan_ch->channel); |
| continue; |
| } |
| |
| scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| /* If passive , set up for auto-switch |
| * and use long active_dwell time. |
| */ |
| if (!is_active || is_channel_passive(ch_info) || |
| (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) { |
| scan_ch->type = 0; /* passive */ |
| if (IWL_UCODE_API(priv->ucode_ver) == 1) |
| scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1); |
| } else { |
| scan_ch->type = 1; /* active */ |
| } |
| |
| /* Set direct probe bits. These may be used both for active |
| * scan channels (probes gets sent right away), |
| * or for passive channels (probes get se sent only after |
| * hearing clear Rx packet).*/ |
| if (IWL_UCODE_API(priv->ucode_ver) >= 2) { |
| if (n_probes) |
| scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes); |
| } else { |
| /* uCode v1 does not allow setting direct probe bits on |
| * passive channel. */ |
| if ((scan_ch->type & 1) && n_probes) |
| scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes); |
| } |
| |
| /* Set txpower levels to defaults */ |
| scan_ch->tpc.dsp_atten = 110; |
| /* scan_pwr_info->tpc.dsp_atten; */ |
| |
| /*scan_pwr_info->tpc.tx_gain; */ |
| if (band == IEEE80211_BAND_5GHZ) |
| scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| else { |
| scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); |
| /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| * power level: |
| * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; |
| */ |
| } |
| |
| IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n", |
| scan_ch->channel, |
| (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", |
| (scan_ch->type & 1) ? |
| active_dwell : passive_dwell); |
| |
| scan_ch++; |
| added++; |
| } |
| |
| IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added); |
| return added; |
| } |
| |
| static void iwl3945_init_hw_rates(struct iwl_priv *priv, |
| struct ieee80211_rate *rates) |
| { |
| int i; |
| |
| for (i = 0; i < IWL_RATE_COUNT; i++) { |
| rates[i].bitrate = iwl3945_rates[i].ieee * 5; |
| rates[i].hw_value = i; /* Rate scaling will work on indexes */ |
| rates[i].hw_value_short = i; |
| rates[i].flags = 0; |
| if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) { |
| /* |
| * If CCK != 1M then set short preamble rate flag. |
| */ |
| rates[i].flags |= (iwl3945_rates[i].plcp == 10) ? |
| 0 : IEEE80211_RATE_SHORT_PREAMBLE; |
| } |
| } |
| } |
| |
| /****************************************************************************** |
| * |
| * uCode download functions |
| * |
| ******************************************************************************/ |
| |
| static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv) |
| { |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data); |
| iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot); |
| } |
| |
| /** |
| * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host, |
| * looking at all data. |
| */ |
| static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len) |
| { |
| u32 val; |
| u32 save_len = len; |
| int rc = 0; |
| u32 errcnt; |
| |
| IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len); |
| |
| iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, |
| IWL39_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)); |
| rc = -EIO; |
| errcnt++; |
| if (errcnt >= 20) |
| break; |
| } |
| } |
| |
| |
| if (!errcnt) |
| IWL_DEBUG_INFO(priv, |
| "ucode image in INSTRUCTION memory is good\n"); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * iwl3945_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 iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) |
| { |
| u32 val; |
| int rc = 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 + IWL39_RTC_INST_LOWER_BOUND); |
| val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); |
| if (val != le32_to_cpu(*image)) { |
| #if 0 /* Enable this if you want to see details */ |
| IWL_ERR(priv, "uCode INST section is invalid at " |
| "offset 0x%x, is 0x%x, s/b 0x%x\n", |
| i, val, *image); |
| #endif |
| rc = -EIO; |
| errcnt++; |
| if (errcnt >= 3) |
| break; |
| } |
| } |
| |
| return rc; |
| } |
| |
| |
| /** |
| * iwl3945_verify_ucode - determine which instruction image is in SRAM, |
| * and verify its contents |
| */ |
| static int iwl3945_verify_ucode(struct iwl_priv *priv) |
| { |
| __le32 *image; |
| u32 len; |
| int rc = 0; |
| |
| /* Try bootstrap */ |
| image = (__le32 *)priv->ucode_boot.v_addr; |
| len = priv->ucode_boot.len; |
| rc = iwl3945_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| 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; |
| rc = iwl3945_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| 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; |
| rc = iwl3945_verify_inst_sparse(priv, image, len); |
| if (rc == 0) { |
| 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; |
| rc = iwl3945_verify_inst_full(priv, image, len); |
| |
| return rc; |
| } |
| |
| static void iwl3945_nic_start(struct iwl_priv *priv) |
| { |
| /* Remove all resets to allow NIC to operate */ |
| iwl_write32(priv, CSR_RESET, 0); |
| } |
| |
| /** |
| * iwl3945_read_ucode - Read uCode images from disk file. |
| * |
| * Copy into buffers for card to fetch via bus-mastering |
| */ |
| static int iwl3945_read_ucode(struct iwl_priv *priv) |
| { |
| const struct iwl_ucode_header *ucode; |
| int ret = -EINVAL, index; |
| const struct firmware *ucode_raw; |
| /* firmware file name contains uCode/driver compatibility version */ |
| const char *name_pre = priv->cfg->fw_name_pre; |
| const unsigned int api_max = priv->cfg->ucode_api_max; |
| const unsigned int api_min = priv->cfg->ucode_api_min; |
| char buf[25]; |
| u8 *src; |
| size_t len; |
| u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size; |
| |
| /* Ask kernel firmware_class module to get the boot firmware off disk. |
| * request_firmware() is synchronous, file is in memory on return. */ |
| for (index = api_max; index >= api_min; index--) { |
| sprintf(buf, "%s%u%s", name_pre, index, ".ucode"); |
| ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev); |
| if (ret < 0) { |
| IWL_ERR(priv, "%s firmware file req failed: %d\n", |
| buf, ret); |
| if (ret == -ENOENT) |
| continue; |
| else |
| goto error; |
| } else { |
| if (index < api_max) |
| IWL_ERR(priv, "Loaded firmware %s, " |
| "which is deprecated. " |
| " Please use API v%u instead.\n", |
| buf, api_max); |
| IWL_DEBUG_INFO(priv, "Got firmware '%s' file " |
| "(%zd bytes) from disk\n", |
| buf, ucode_raw->size); |
| break; |
| } |
| } |
| |
| if (ret < 0) |
| goto error; |
| |
| /* Make sure that we got at least our header! */ |
| if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) { |
| IWL_ERR(priv, "File size way too small!\n"); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Data from ucode file: header followed by uCode images */ |
| ucode = (struct iwl_ucode_header *)ucode_raw->data; |
| |
| priv->ucode_ver = le32_to_cpu(ucode->ver); |
| api_ver = IWL_UCODE_API(priv->ucode_ver); |
| inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver); |
| data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver); |
| init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver); |
| init_data_size = |
| priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver); |
| boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver); |
| src = priv->cfg->ops->ucode->get_data(ucode, api_ver); |
| |
| /* api_ver should match the api version forming part of the |
| * firmware filename ... but we don't check for that and only rely |
| * on the API version read from firmware header from here on forward */ |
| |
| if (api_ver < api_min || api_ver > api_max) { |
| IWL_ERR(priv, "Driver unable to support your firmware API. " |
| "Driver supports v%u, firmware is v%u.\n", |
| api_max, api_ver); |
| priv->ucode_ver = 0; |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (api_ver != api_max) |
| IWL_ERR(priv, "Firmware has old API version. Expected %u, " |
| "got %u. New firmware can be obtained " |
| "from http://www.intellinuxwireless.org.\n", |
| api_max, api_ver); |
| |
| IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n", |
| IWL_UCODE_MAJOR(priv->ucode_ver), |
| IWL_UCODE_MINOR(priv->ucode_ver), |
| IWL_UCODE_API(priv->ucode_ver), |
| IWL_UCODE_SERIAL(priv->ucode_ver)); |
| |
| IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n", |
| priv->ucode_ver); |
| IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n", |
| inst_size); |
| IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n", |
| data_size); |
| IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n", |
| init_size); |
| IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n", |
| init_data_size); |
| IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n", |
| boot_size); |
| |
| |
| /* Verify size of file vs. image size info in file's header */ |
| if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) + |
| inst_size + data_size + init_size + |
| init_data_size + boot_size) { |
| |
| IWL_DEBUG_INFO(priv, |
| "uCode file size %zd does not match expected size\n", |
| ucode_raw->size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Verify that uCode images will fit in card's SRAM */ |
| if (inst_size > IWL39_MAX_INST_SIZE) { |
| IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n", |
| inst_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| if (data_size > IWL39_MAX_DATA_SIZE) { |
| IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n", |
| data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_size > IWL39_MAX_INST_SIZE) { |
| IWL_DEBUG_INFO(priv, |
| "uCode init instr len %d too large to fit in\n", |
| init_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_data_size > IWL39_MAX_DATA_SIZE) { |
| IWL_DEBUG_INFO(priv, |
| "uCode init data len %d too large to fit in\n", |
| init_data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (boot_size > IWL39_MAX_BSM_SIZE) { |
| IWL_DEBUG_INFO(priv, |
| "uCode boot instr len %d too large to fit in\n", |
| boot_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Allocate ucode buffers for card's bus-master loading ... */ |
| |
| /* Runtime instructions and 2 copies of data: |
| * 1) unmodified from disk |
| * 2) backup cache for save/restore during power-downs */ |
| priv->ucode_code.len = inst_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code); |
| |
| priv->ucode_data.len = data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data); |
| |
| priv->ucode_data_backup.len = data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup); |
| |
| if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr || |
| !priv->ucode_data_backup.v_addr) |
| goto err_pci_alloc; |
| |
| /* Initialization instructions and data */ |
| if (init_size && init_data_size) { |
| priv->ucode_init.len = init_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init); |
| |
| priv->ucode_init_data.len = init_data_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data); |
| |
| if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr) |
| goto err_pci_alloc; |
| } |
| |
| /* Bootstrap (instructions only, no data) */ |
| if (boot_size) { |
| priv->ucode_boot.len = boot_size; |
| iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot); |
| |
| if (!priv->ucode_boot.v_addr) |
| goto err_pci_alloc; |
| } |
| |
| /* Copy images into buffers for card's bus-master reads ... */ |
| |
| /* Runtime instructions (first block of data in file) */ |
| len = inst_size; |
| IWL_DEBUG_INFO(priv, |
| "Copying (but not loading) uCode instr len %zd\n", len); |
| memcpy(priv->ucode_code.v_addr, src, len); |
| src += len; |
| |
| IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", |
| priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr); |
| |
| /* Runtime data (2nd block) |
| * NOTE: Copy into backup buffer will be done in iwl3945_up() */ |
| len = data_size; |
| IWL_DEBUG_INFO(priv, |
| "Copying (but not loading) uCode data len %zd\n", len); |
| memcpy(priv->ucode_data.v_addr, src, len); |
| memcpy(priv->ucode_data_backup.v_addr, src, len); |
| src += len; |
| |
| /* Initialization instructions (3rd block) */ |
| if (init_size) { |
| len = init_size; |
| IWL_DEBUG_INFO(priv, |
| "Copying (but not loading) init instr len %zd\n", len); |
| memcpy(priv->ucode_init.v_addr, src, len); |
| src += len; |
| } |
| |
| /* Initialization data (4th block) */ |
| if (init_data_size) { |
| len = init_data_size; |
| IWL_DEBUG_INFO(priv, |
| "Copying (but not loading) init data len %zd\n", len); |
| memcpy(priv->ucode_init_data.v_addr, src, len); |
| src += len; |
| } |
| |
| /* Bootstrap instructions (5th block) */ |
| len = boot_size; |
| IWL_DEBUG_INFO(priv, |
| "Copying (but not loading) boot instr len %zd\n", len); |
| memcpy(priv->ucode_boot.v_addr, src, len); |
| |
| /* We have our copies now, allow OS release its copies */ |
| release_firmware(ucode_raw); |
| return 0; |
| |
| err_pci_alloc: |
| IWL_ERR(priv, "failed to allocate pci memory\n"); |
| ret = -ENOMEM; |
| iwl3945_dealloc_ucode_pci(priv); |
| |
| err_release: |
| release_firmware(ucode_raw); |
| |
| error: |
| return ret; |
| } |
| |
| |
| /** |
| * iwl3945_set_ucode_ptrs - Set uCode address location |
| * |
| * Tell initialization uCode where to find runtime uCode. |
| * |
| * BSM registers initially contain pointers to initialization uCode. |
| * We need to replace them to load runtime uCode inst and data, |
| * and to save runtime data when powering down. |
| */ |
| static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv) |
| { |
| dma_addr_t pinst; |
| dma_addr_t pdata; |
| |
| /* bits 31:0 for 3945 */ |
| pinst = priv->ucode_code.p_addr; |
| pdata = priv->ucode_data_backup.p_addr; |
| |
| /* Tell bootstrap uCode where to find image to load */ |
| iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); |
| iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); |
| iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, |
| priv->ucode_data.len); |
| |
| /* Inst byte count must be last to set up, bit 31 signals uCode |
| * that all new ptr/size info is in place */ |
| iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, |
| priv->ucode_code.len | BSM_DRAM_INST_LOAD); |
| |
| IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received |
| * |
| * Called after REPLY_ALIVE notification received from "initialize" uCode. |
| * |
| * Tell "initialize" uCode to go ahead and load the runtime uCode. |
| */ |
| static void iwl3945_init_alive_start(struct iwl_priv *priv) |
| { |
| /* Check alive response for "valid" sign from uCode */ |
| if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { |
| /* We had an error bringing up the hardware, so take it |
| * all the way back down so we can try again */ |
| IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n"); |
| goto restart; |
| } |
| |
| /* Bootstrap uCode has loaded initialize uCode ... verify inst image. |
| * This is a paranoid check, because we would not have gotten the |
| * "initialize" alive if code weren't properly loaded. */ |
| if (iwl3945_verify_ucode(priv)) { |
| /* Runtime instruction load was bad; |
| * take it all the way back down so we can try again */ |
| IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n"); |
| goto restart; |
| } |
| |
| /* Send pointers to protocol/runtime uCode image ... init code will |
| * load and launch runtime uCode, which will send us another "Alive" |
| * notification. */ |
| IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); |
| if (iwl3945_set_ucode_ptrs(priv)) { |
| /* Runtime instruction load won't happen; |
| * take it all the way back down so we can try again */ |
| IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n"); |
| goto restart; |
| } |
| return; |
| |
| restart: |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| |
| /** |
| * iwl3945_alive_start - called after REPLY_ALIVE notification received |
| * from protocol/runtime uCode (initialization uCode's |
| * Alive gets handled by iwl3945_init_alive_start()). |
| */ |
| static void iwl3945_alive_start(struct iwl_priv *priv) |
| { |
| int thermal_spin = 0; |
| u32 rfkill; |
| |
| IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); |
| |
| if (priv->card_alive.is_valid != UCODE_VALID_OK) { |
| /* We had an error bringing up the hardware, so take it |
| * all the way back down so we can try again */ |
| IWL_DEBUG_INFO(priv, "Alive failed.\n"); |
| goto restart; |
| } |
| |
| /* Initialize uCode has loaded Runtime uCode ... verify inst image. |
| * This is a paranoid check, because we would not have gotten the |
| * "runtime" alive if code weren't properly loaded. */ |
| if (iwl3945_verify_ucode(priv)) { |
| /* Runtime instruction load was bad; |
| * take it all the way back down so we can try again */ |
| IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n"); |
| goto restart; |
| } |
| |
| iwl_clear_stations_table(priv); |
| |
| rfkill = iwl_read_prph(priv, APMG_RFKILL_REG); |
| IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill); |
| |
| if (rfkill & 0x1) { |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| /* if RFKILL is not on, then wait for thermal |
| * sensor in adapter to kick in */ |
| while (iwl3945_hw_get_temperature(priv) == 0) { |
| thermal_spin++; |
| udelay(10); |
| } |
| |
| if (thermal_spin) |
| IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n", |
| thermal_spin * 10); |
| } else |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| /* After the ALIVE response, we can send commands to 3945 uCode */ |
| set_bit(STATUS_ALIVE, &priv->status); |
| |
| if (iwl_is_rfkill(priv)) |
| return; |
| |
| ieee80211_wake_queues(priv->hw); |
| |
| priv->active_rate = priv->rates_mask; |
| priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; |
| |
| iwl_power_update_mode(priv, false); |
| |
| if (iwl_is_associated(priv)) { |
| struct iwl3945_rxon_cmd *active_rxon = |
| (struct iwl3945_rxon_cmd *)(&priv->active_rxon); |
| |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| } else { |
| /* Initialize our rx_config data */ |
| iwl_connection_init_rx_config(priv, priv->iw_mode); |
| } |
| |
| /* Configure Bluetooth device coexistence support */ |
| iwl_send_bt_config(priv); |
| |
| /* Configure the adapter for unassociated operation */ |
| iwlcore_commit_rxon(priv); |
| |
| iwl3945_reg_txpower_periodic(priv); |
| |
| iwl3945_led_register(priv); |
| |
| IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); |
| set_bit(STATUS_READY, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| /* reassociate for ADHOC mode */ |
| if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) { |
| struct sk_buff *beacon = ieee80211_beacon_get(priv->hw, |
| priv->vif); |
| if (beacon) |
| iwl_mac_beacon_update(priv->hw, beacon); |
| } |
| |
| if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status)) |
| iwl_set_mode(priv, priv->iw_mode); |
| |
| return; |
| |
| restart: |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| |
| static void iwl3945_cancel_deferred_work(struct iwl_priv *priv); |
| |
| static void __iwl3945_down(struct iwl_priv *priv) |
| { |
| unsigned long flags; |
| int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status); |
| struct ieee80211_conf *conf = NULL; |
| |
| IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| if (!exit_pending) |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| iwl3945_led_unregister(priv); |
| iwl_clear_stations_table(priv); |
| |
| /* Unblock any waiting calls */ |
| wake_up_interruptible_all(&priv->wait_command_queue); |
| |
| /* Wipe out the EXIT_PENDING status bit if we are not actually |
| * exiting the module */ |
| if (!exit_pending) |
| clear_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| /* stop and reset the on-board processor */ |
| iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
| |
| /* tell the device to stop sending interrupts */ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| iwl_synchronize_irq(priv); |
| |
| if (priv->mac80211_registered) |
| ieee80211_stop_queues(priv->hw); |
| |
| /* If we have not previously called iwl3945_init() then |
| * clear all bits but the RF Kill bits and return */ |
| if (!iwl_is_init(priv)) { |
| priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << |
| STATUS_RF_KILL_HW | |
| test_bit(STATUS_GEO_CONFIGURED, &priv->status) << |
| STATUS_GEO_CONFIGURED | |
| test_bit(STATUS_EXIT_PENDING, &priv->status) << |
| STATUS_EXIT_PENDING; |
| goto exit; |
| } |
| |
| /* ...otherwise clear out all the status bits but the RF Kill |
| * bit and continue taking the NIC down. */ |
| priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << |
| STATUS_RF_KILL_HW | |
| test_bit(STATUS_GEO_CONFIGURED, &priv->status) << |
| STATUS_GEO_CONFIGURED | |
| test_bit(STATUS_FW_ERROR, &priv->status) << |
| STATUS_FW_ERROR | |
| test_bit(STATUS_EXIT_PENDING, &priv->status) << |
| STATUS_EXIT_PENDING; |
| |
| priv->cfg->ops->lib->apm_ops.reset(priv); |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl3945_hw_txq_ctx_stop(priv); |
| iwl3945_hw_rxq_stop(priv); |
| |
| iwl_write_prph(priv, APMG_CLK_DIS_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| |
| udelay(5); |
| |
| if (exit_pending) |
| priv->cfg->ops->lib->apm_ops.stop(priv); |
| else |
| priv->cfg->ops->lib->apm_ops.reset(priv); |
| |
| exit: |
| memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp)); |
| |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| priv->ibss_beacon = NULL; |
| |
| /* clear out any free frames */ |
| iwl3945_clear_free_frames(priv); |
| } |
| |
| static void iwl3945_down(struct iwl_priv *priv) |
| { |
| mutex_lock(&priv->mutex); |
| __iwl3945_down(priv); |
| mutex_unlock(&priv->mutex); |
| |
| iwl3945_cancel_deferred_work(priv); |
| } |
| |
| #define MAX_HW_RESTARTS 5 |
| |
| static int __iwl3945_up(struct iwl_priv *priv) |
| { |
| int rc, i; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); |
| return -EIO; |
| } |
| |
| if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { |
| IWL_ERR(priv, "ucode not available for device bring up\n"); |
| return -EIO; |
| } |
| |
| /* If platform's RF_KILL switch is NOT set to KILL */ |
| if (iwl_read32(priv, CSR_GP_CNTRL) & |
| CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| else { |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n"); |
| return -ENODEV; |
| } |
| |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| |
| rc = iwl3945_hw_nic_init(priv); |
| if (rc) { |
| IWL_ERR(priv, "Unable to int nic\n"); |
| return rc; |
| } |
| |
| /* make sure rfkill handshake bits are cleared */ |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| /* clear (again), then enable host interrupts */ |
| iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| iwl_enable_interrupts(priv); |
| |
| /* really make sure rfkill handshake bits are cleared */ |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| |
| /* Copy original ucode data image from disk into backup cache. |
| * This will be used to initialize the on-board processor's |
| * data SRAM for a clean start when the runtime program first loads. */ |
| memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, |
| priv->ucode_data.len); |
| |
| /* We return success when we resume from suspend and rf_kill is on. */ |
| if (test_bit(STATUS_RF_KILL_HW, &priv->status)) |
| return 0; |
| |
| for (i = 0; i < MAX_HW_RESTARTS; i++) { |
| |
| iwl_clear_stations_table(priv); |
| |
| /* load bootstrap state machine, |
| * load bootstrap program into processor's memory, |
| * prepare to load the "initialize" uCode */ |
| priv->cfg->ops->lib->load_ucode(priv); |
| |
| if (rc) { |
| IWL_ERR(priv, |
| "Unable to set up bootstrap uCode: %d\n", rc); |
| continue; |
| } |
| |
| /* start card; "initialize" will load runtime ucode */ |
| iwl3945_nic_start(priv); |
| |
| IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n"); |
| |
| return 0; |
| } |
| |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| __iwl3945_down(priv); |
| clear_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| /* tried to restart and config the device for as long as our |
| * patience could withstand */ |
| IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i); |
| return -EIO; |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * Workqueue callbacks |
| * |
| *****************************************************************************/ |
| |
| static void iwl3945_bg_init_alive_start(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, init_alive_start.work); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| iwl3945_init_alive_start(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl3945_bg_alive_start(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, alive_start.work); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| iwl3945_alive_start(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl3945_rfkill_poll(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, rfkill_poll.work); |
| |
| if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| else |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| wiphy_rfkill_set_hw_state(priv->hw->wiphy, |
| test_bit(STATUS_RF_KILL_HW, &priv->status)); |
| |
| queue_delayed_work(priv->workqueue, &priv->rfkill_poll, |
| round_jiffies_relative(2 * HZ)); |
| |
| } |
| |
| #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ) |
| static void iwl3945_bg_request_scan(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, request_scan); |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SCAN_CMD, |
| .len = sizeof(struct iwl3945_scan_cmd), |
| .flags = CMD_SIZE_HUGE, |
| }; |
| int rc = 0; |
| struct iwl3945_scan_cmd *scan; |
| struct ieee80211_conf *conf = NULL; |
| u8 n_probes = 0; |
| enum ieee80211_band band; |
| bool is_active = false; |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| mutex_lock(&priv->mutex); |
| |
| cancel_delayed_work(&priv->scan_check); |
| |
| if (!iwl_is_ready(priv)) { |
| IWL_WARN(priv, "request scan called when driver not ready.\n"); |
| goto done; |
| } |
| |
| /* Make sure the scan wasn't canceled before this queued work |
| * was given the chance to run... */ |
| if (!test_bit(STATUS_SCANNING, &priv->status)) |
| goto done; |
| |
| /* This should never be called or scheduled if there is currently |
| * a scan active in the hardware. */ |
| if (test_bit(STATUS_SCAN_HW, &priv->status)) { |
| IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests " |
| "Ignoring second request.\n"); |
| rc = -EIO; |
| goto done; |
| } |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n"); |
| goto done; |
| } |
| |
| if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) { |
| IWL_DEBUG_HC(priv, |
| "Scan request while abort pending. Queuing.\n"); |
| goto done; |
| } |
| |
| if (iwl_is_rfkill(priv)) { |
| IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n"); |
| goto done; |
| } |
| |
| if (!test_bit(STATUS_READY, &priv->status)) { |
| IWL_DEBUG_HC(priv, |
| "Scan request while uninitialized. Queuing.\n"); |
| goto done; |
| } |
| |
| if (!priv->scan_bands) { |
| IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n"); |
| goto done; |
| } |
| |
| if (!priv->scan) { |
| priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) + |
| IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
| if (!priv->scan) { |
| rc = -ENOMEM; |
| goto done; |
| } |
| } |
| scan = priv->scan; |
| memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE); |
| |
| scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; |
| scan->quiet_time = IWL_ACTIVE_QUIET_TIME; |
| |
| if (iwl_is_associated(priv)) { |
| u16 interval = 0; |
| u32 extra; |
| u32 suspend_time = 100; |
| u32 scan_suspend_time = 100; |
| unsigned long flags; |
| |
| IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| interval = priv->beacon_int; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| scan->suspend_time = 0; |
| scan->max_out_time = cpu_to_le32(200 * 1024); |
| if (!interval) |
| interval = suspend_time; |
| /* |
| * suspend time format: |
| * 0-19: beacon interval in usec (time before exec.) |
| * 20-23: 0 |
| * 24-31: number of beacons (suspend between channels) |
| */ |
| |
| extra = (suspend_time / interval) << 24; |
| scan_suspend_time = 0xFF0FFFFF & |
| (extra | ((suspend_time % interval) * 1024)); |
| |
| scan->suspend_time = cpu_to_le32(scan_suspend_time); |
| IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", |
| scan_suspend_time, interval); |
| } |
| |
| if (priv->scan_request->n_ssids) { |
| int i, p = 0; |
| IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); |
| for (i = 0; i < priv->scan_request->n_ssids; i++) { |
| /* always does wildcard anyway */ |
| if (!priv->scan_request->ssids[i].ssid_len) |
| continue; |
| scan->direct_scan[p].id = WLAN_EID_SSID; |
| scan->direct_scan[p].len = |
| priv->scan_request->ssids[i].ssid_len; |
| memcpy(scan->direct_scan[p].ssid, |
| priv->scan_request->ssids[i].ssid, |
| priv->scan_request->ssids[i].ssid_len); |
| n_probes++; |
| p++; |
| } |
| is_active = true; |
| } else |
| IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n"); |
| |
| /* We don't build a direct scan probe request; the uCode will do |
| * that based on the direct_mask added to each channel entry */ |
| scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
| scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id; |
| scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| |
| /* flags + rate selection */ |
| |
| if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) { |
| scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
| scan->tx_cmd.rate = IWL_RATE_1M_PLCP; |
| scan->good_CRC_th = 0; |
| band = IEEE80211_BAND_2GHZ; |
| } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) { |
| scan->tx_cmd.rate = IWL_RATE_6M_PLCP; |
| /* |
| * If active scaning is requested but a certain channel |
| * is marked passive, we can do active scanning if we |
| * detect transmissions. |
| */ |
| scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0; |
| band = IEEE80211_BAND_5GHZ; |
| } else { |
| IWL_WARN(priv, "Invalid scan band count\n"); |
| goto done; |
| } |
| |
| scan->tx_cmd.len = cpu_to_le16( |
| iwl_fill_probe_req(priv, |
| (struct ieee80211_mgmt *)scan->data, |
| priv->scan_request->ie, |
| priv->scan_request->ie_len, |
| IWL_MAX_SCAN_SIZE - sizeof(*scan))); |
| |
| /* select Rx antennas */ |
| scan->flags |= iwl3945_get_antenna_flags(priv); |
| |
| if (iwl_is_monitor_mode(priv)) |
| scan->filter_flags = RXON_FILTER_PROMISC_MSK; |
| |
| scan->channel_count = |
| iwl3945_get_channels_for_scan(priv, band, is_active, n_probes, |
| (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]); |
| |
| if (scan->channel_count == 0) { |
| IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); |
| goto done; |
| } |
| |
| cmd.len += le16_to_cpu(scan->tx_cmd.len) + |
| scan->channel_count * sizeof(struct iwl3945_scan_channel); |
| cmd.data = scan; |
| scan->len = cpu_to_le16(cmd.len); |
| |
| set_bit(STATUS_SCAN_HW, &priv->status); |
| rc = iwl_send_cmd_sync(priv, &cmd); |
| if (rc) |
| goto done; |
| |
| queue_delayed_work(priv->workqueue, &priv->scan_check, |
| IWL_SCAN_CHECK_WATCHDOG); |
| |
| mutex_unlock(&priv->mutex); |
| return; |
| |
| done: |
| /* can not perform scan make sure we clear scanning |
| * bits from status so next scan request can be performed. |
| * if we dont clear scanning status bit here all next scan |
| * will fail |
| */ |
| clear_bit(STATUS_SCAN_HW, &priv->status); |
| clear_bit(STATUS_SCANNING, &priv->status); |
| |
| /* inform mac80211 scan aborted */ |
| queue_work(priv->workqueue, &priv->scan_completed); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl3945_bg_up(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, up); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| __iwl3945_up(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| static void iwl3945_bg_restart(struct work_struct *data) |
| { |
| struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { |
| mutex_lock(&priv->mutex); |
| priv->vif = NULL; |
| priv->is_open = 0; |
| mutex_unlock(&priv->mutex); |
| iwl3945_down(priv); |
| ieee80211_restart_hw(priv->hw); |
| } else { |
| iwl3945_down(priv); |
| queue_work(priv->workqueue, &priv->up); |
| } |
| } |
| |
| static void iwl3945_bg_rx_replenish(struct work_struct *data) |
| { |
| struct iwl_priv *priv = |
| container_of(data, struct iwl_priv, rx_replenish); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| iwl3945_rx_replenish(priv); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| #define IWL_DELAY_NEXT_SCAN (HZ*2) |
| |
| void iwl3945_post_associate(struct iwl_priv *priv) |
| { |
| int rc = 0; |
| struct ieee80211_conf *conf = NULL; |
| |
| if (priv->iw_mode == NL80211_IFTYPE_AP) { |
| IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__); |
| return; |
| } |
| |
| |
| IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n", |
| priv->assoc_id, priv->active_rxon.bssid_addr); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (!priv->vif || !priv->is_open) |
| return; |
| |
| iwl_scan_cancel_timeout(priv, 200); |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwlcore_commit_rxon(priv); |
| |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| iwl_setup_rxon_timing(priv); |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), &priv->rxon_timing); |
| if (rc) |
| IWL_WARN(priv, "REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| |
| priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); |
| |
| IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n", |
| priv->assoc_id, priv->beacon_int); |
| |
| if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) |
| priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| |
| if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { |
| if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) |
| priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| else |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| if (priv->iw_mode == NL80211_IFTYPE_ADHOC) |
| priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| } |
| |
| iwlcore_commit_rxon(priv); |
| |
| switch (priv->iw_mode) { |
| case NL80211_IFTYPE_STATION: |
| iwl3945_rate_scale_init(priv->hw, IWL_AP_ID); |
| break; |
| |
| case NL80211_IFTYPE_ADHOC: |
| |
| priv->assoc_id = 1; |
| iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL); |
| iwl3945_sync_sta(priv, IWL_STA_ID, |
| (priv->band == IEEE80211_BAND_5GHZ) ? |
| IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP, |
| CMD_ASYNC); |
| iwl3945_rate_scale_init(priv->hw, IWL_STA_ID); |
| iwl3945_send_beacon_cmd(priv); |
| |
| break; |
| |
| default: |
| IWL_ERR(priv, "%s Should not be called in %d mode\n", |
| __func__, priv->iw_mode); |
| break; |
| } |
| |
| iwl_activate_qos(priv, 0); |
| |
| /* we have just associated, don't start scan too early */ |
| priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN; |
| } |
| |
| /***************************************************************************** |
| * |
| * mac80211 entry point functions |
| * |
| *****************************************************************************/ |
| |
| #define UCODE_READY_TIMEOUT (2 * HZ) |
| |
| static int iwl3945_mac_start(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| int ret; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| /* we should be verifying the device is ready to be opened */ |
| mutex_lock(&priv->mutex); |
| |
| /* fetch ucode file from disk, alloc and copy to bus-master buffers ... |
| * ucode filename and max sizes are card-specific. */ |
| |
| if (!priv->ucode_code.len) { |
| ret = iwl3945_read_ucode(priv); |
| if (ret) { |
| IWL_ERR(priv, "Could not read microcode: %d\n", ret); |
| mutex_unlock(&priv->mutex); |
| goto out_release_irq; |
| } |
| } |
| |
| ret = __iwl3945_up(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| if (ret) |
| goto out_release_irq; |
| |
| IWL_DEBUG_INFO(priv, "Start UP work.\n"); |
| |
| /* Wait for START_ALIVE from ucode. Otherwise callbacks from |
| * mac80211 will not be run successfully. */ |
| ret = wait_event_interruptible_timeout(priv->wait_command_queue, |
| test_bit(STATUS_READY, &priv->status), |
| UCODE_READY_TIMEOUT); |
| if (!ret) { |
| if (!test_bit(STATUS_READY, &priv->status)) { |
| IWL_ERR(priv, |
| "Wait for START_ALIVE timeout after %dms.\n", |
| jiffies_to_msecs(UCODE_READY_TIMEOUT)); |
| ret = -ETIMEDOUT; |
| goto out_release_irq; |
| } |
| } |
| |
| /* ucode is running and will send rfkill notifications, |
| * no need to poll the killswitch state anymore */ |
| cancel_delayed_work(&priv->rfkill_poll); |
| |
| priv->is_open = 1; |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| return 0; |
| |
| out_release_irq: |
| priv->is_open = 0; |
| IWL_DEBUG_MAC80211(priv, "leave - failed\n"); |
| return ret; |
| } |
| |
| static void iwl3945_mac_stop(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| if (!priv->is_open) { |
| IWL_DEBUG_MAC80211(priv, "leave - skip\n"); |
| return; |
| } |
| |
| priv->is_open = 0; |
| |
| if (iwl_is_ready_rf(priv)) { |
| /* stop mac, cancel any scan request and clear |
| * RXON_FILTER_ASSOC_MSK BIT |
| */ |
| mutex_lock(&priv->mutex); |
| iwl_scan_cancel_timeout(priv, 100); |
| mutex_unlock(&priv->mutex); |
| } |
| |
| iwl3945_down(priv); |
| |
| flush_workqueue(priv->workqueue); |
| |
| /* start polling the killswitch state again */ |
| queue_delayed_work(priv->workqueue, &priv->rfkill_poll, |
| round_jiffies_relative(2 * HZ)); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| } |
| |
| static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
| ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); |
| |
| if (iwl3945_tx_skb(priv, skb)) |
| dev_kfree_skb_any(skb); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| return NETDEV_TX_OK; |
| } |
| |
| void iwl3945_config_ap(struct iwl_priv *priv) |
| { |
| int rc = 0; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| /* The following should be done only at AP bring up */ |
| if (!(iwl_is_associated(priv))) { |
| |
| /* RXON - unassoc (to set timing command) */ |
| priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwlcore_commit_rxon(priv); |
| |
| /* RXON Timing */ |
| memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| iwl_setup_rxon_timing(priv); |
| rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING, |
| sizeof(priv->rxon_timing), |
| &priv->rxon_timing); |
| if (rc) |
| IWL_WARN(priv, "REPLY_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| /* FIXME: what should be the assoc_id for AP? */ |
| priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id); |
| if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE) |
| priv->staging_rxon.flags |= |
| RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| |
| if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) { |
| if (priv->assoc_capability & |
| WLAN_CAPABILITY_SHORT_SLOT_TIME) |
| priv->staging_rxon.flags |= |
| RXON_FLG_SHORT_SLOT_MSK; |
| else |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_SLOT_MSK; |
| |
| if (priv->iw_mode == NL80211_IFTYPE_ADHOC) |
| priv->staging_rxon.flags &= |
| ~RXON_FLG_SHORT_SLOT_MSK; |
| } |
| /* restore RXON assoc */ |
| priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| iwlcore_commit_rxon(priv); |
| iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL); |
| } |
| iwl3945_send_beacon_cmd(priv); |
| |
| /* FIXME - we need to add code here to detect a totally new |
| * configuration, reset the AP, unassoc, rxon timing, assoc, |
| * clear sta table, add BCAST sta... */ |
| } |
| |
| static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key) |
| { |
| struct iwl_priv *priv = hw->priv; |
| const u8 *addr; |
| int ret = 0; |
| u8 sta_id = IWL_INVALID_STATION; |
| u8 static_key; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| if (iwl3945_mod_params.sw_crypto) { |
| IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| addr = sta ? sta->addr : iwl_bcast_addr; |
| static_key = !iwl_is_associated(priv); |
| |
| if (!static_key) { |
| sta_id = iwl_find_station(priv, addr); |
| if (sta_id == IWL_INVALID_STATION) { |
| IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n", |
| addr); |
| return -EINVAL; |
| } |
| } |
| |
| mutex_lock(&priv->mutex); |
| iwl_scan_cancel_timeout(priv, 100); |
| mutex_unlock(&priv->mutex); |
| |
| switch (cmd) { |
| case SET_KEY: |
| if (static_key) |
| ret = iwl3945_set_static_key(priv, key); |
| else |
| ret = iwl3945_set_dynamic_key(priv, key, sta_id); |
| IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); |
| break; |
| case DISABLE_KEY: |
| if (static_key) |
| ret = iwl3945_remove_static_key(priv); |
| else |
| ret = iwl3945_clear_sta_key_info(priv, sta_id); |
| IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| |
| return ret; |
| } |
| |
| /***************************************************************************** |
| * |
| * sysfs attributes |
| * |
| *****************************************************************************/ |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| |
| /* |
| * The following adds a new attribute to the sysfs representation |
| * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) |
| * used for controlling the debug level. |
| * |
| * See the level definitions in iwl for details. |
| * |
| * The debug_level being managed using sysfs below is a per device debug |
| * level that is used instead of the global debug level if it (the per |
| * device debug level) is set. |
| */ |
| static ssize_t show_debug_level(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv)); |
| } |
| static ssize_t store_debug_level(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| unsigned long val; |
| int ret; |
| |
| ret = strict_strtoul(buf, 0, &val); |
| if (ret) |
| IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf); |
| else { |
| priv->debug_level = val; |
| if (iwl_alloc_traffic_mem(priv)) |
| IWL_ERR(priv, |
| "Not enough memory to generate traffic log\n"); |
| } |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| show_debug_level, store_debug_level); |
| |
| #endif /* CONFIG_IWLWIFI_DEBUG */ |
| |
| static ssize_t show_temperature(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv)); |
| } |
| |
| static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); |
| |
| static ssize_t show_tx_power(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| return sprintf(buf, "%d\n", priv->tx_power_user_lmt); |
| } |
| |
| static ssize_t store_tx_power(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| char *p = (char *)buf; |
| u32 val; |
| |
| val = simple_strtoul(p, &p, 10); |
| if (p == buf) |
| IWL_INFO(priv, ": %s is not in decimal form.\n", buf); |
| else |
| iwl3945_hw_reg_set_txpower(priv, val); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); |
| |
| static ssize_t show_flags(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| return sprintf(buf, "0x%04X\n", priv->active_rxon.flags); |
| } |
| |
| static ssize_t store_flags(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| u32 flags = simple_strtoul(buf, NULL, 0); |
| |
| mutex_lock(&priv->mutex); |
| if (le32_to_cpu(priv->staging_rxon.flags) != flags) { |
| /* Cancel any currently running scans... */ |
| if (iwl_scan_cancel_timeout(priv, 100)) |
| IWL_WARN(priv, "Could not cancel scan.\n"); |
| else { |
| IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n", |
| flags); |
| priv->staging_rxon.flags = cpu_to_le32(flags); |
| iwlcore_commit_rxon(priv); |
| } |
| } |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags); |
| |
| static ssize_t show_filter_flags(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| return sprintf(buf, "0x%04X\n", |
| le32_to_cpu(priv->active_rxon.filter_flags)); |
| } |
| |
| static ssize_t store_filter_flags(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| u32 filter_flags = simple_strtoul(buf, NULL, 0); |
| |
| mutex_lock(&priv->mutex); |
| if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) { |
| /* Cancel any currently running scans... */ |
| if (iwl_scan_cancel_timeout(priv, 100)) |
| IWL_WARN(priv, "Could not cancel scan.\n"); |
| else { |
| IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = " |
| "0x%04X\n", filter_flags); |
| priv->staging_rxon.filter_flags = |
| cpu_to_le32(filter_flags); |
| iwlcore_commit_rxon(priv); |
| } |
| } |
| mutex_unlock(&priv->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, |
| store_filter_flags); |
| |
| #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT |
| |
| static ssize_t show_measurement(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| struct iwl_spectrum_notification measure_report; |
| u32 size = sizeof(measure_report), len = 0, ofs = 0; |
| u8 *data = (u8 *)&measure_report; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!(priv->measurement_status & MEASUREMENT_READY)) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return 0; |
| } |
| memcpy(&measure_report, &priv->measure_report, size); |
| priv->measurement_status = 0; |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| while (size && (PAGE_SIZE - len)) { |
| hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
| PAGE_SIZE - len, 1); |
| len = strlen(buf); |
| if (PAGE_SIZE - len) |
| buf[len++] = '\n'; |
| |
| ofs += 16; |
| size -= min(size, 16U); |
| } |
| |
| return len; |
| } |
| |
| static ssize_t store_measurement(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| struct ieee80211_measurement_params params = { |
| .channel = le16_to_cpu(priv->active_rxon.channel), |
| .start_time = cpu_to_le64(priv->last_tsf), |
| .duration = cpu_to_le16(1), |
| }; |
| u8 type = IWL_MEASURE_BASIC; |
| u8 buffer[32]; |
| u8 channel; |
| |
| if (count) { |
| char *p = buffer; |
| strncpy(buffer, buf, min(sizeof(buffer), count)); |
| channel = simple_strtoul(p, NULL, 0); |
| if (channel) |
| params.channel = channel; |
| |
| p = buffer; |
| while (*p && *p != ' ') |
| p++; |
| if (*p) |
| type = simple_strtoul(p + 1, NULL, 0); |
| } |
| |
| IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on " |
| "channel %d (for '%s')\n", type, params.channel, buf); |
| iwl3945_get_measurement(priv, ¶ms, type); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, |
| show_measurement, store_measurement); |
| #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */ |
| |
| static ssize_t store_retry_rate(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| priv->retry_rate = simple_strtoul(buf, NULL, 0); |
| if (priv->retry_rate <= 0) |
| priv->retry_rate = 1; |
| |
| return count; |
| } |
| |
| static ssize_t show_retry_rate(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| return sprintf(buf, "%d", priv->retry_rate); |
| } |
| |
| static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate, |
| store_retry_rate); |
| |
| |
| static ssize_t show_channels(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| /* all this shit doesn't belong into sysfs anyway */ |
| return 0; |
| } |
| |
| static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL); |
| |
| static ssize_t show_statistics(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| u32 size = sizeof(struct iwl3945_notif_statistics); |
| u32 len = 0, ofs = 0; |
| u8 *data = (u8 *)&priv->statistics_39; |
| int rc = 0; |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| mutex_lock(&priv->mutex); |
| rc = iwl_send_statistics_request(priv, 0); |
| mutex_unlock(&priv->mutex); |
| |
| if (rc) { |
| len = sprintf(buf, |
| "Error sending statistics request: 0x%08X\n", rc); |
| return len; |
| } |
| |
| while (size && (PAGE_SIZE - len)) { |
| hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
| PAGE_SIZE - len, 1); |
| len = strlen(buf); |
| if (PAGE_SIZE - len) |
| buf[len++] = '\n'; |
| |
| ofs += 16; |
| size -= min(size, 16U); |
| } |
| |
| return len; |
| } |
| |
| static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL); |
| |
| static ssize_t show_antenna(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", iwl3945_mod_params.antenna); |
| } |
| |
| static ssize_t store_antenna(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d); |
| int ant; |
| |
| if (count == 0) |
| return 0; |
| |
| if (sscanf(buf, "%1i", &ant) != 1) { |
| IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n"); |
| return count; |
| } |
| |
| if ((ant >= 0) && (ant <= 2)) { |
| IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant); |
| iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant; |
| } else |
| IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant); |
| |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna); |
| |
| static ssize_t show_status(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| if (!iwl_is_alive(priv)) |
| return -EAGAIN; |
| return sprintf(buf, "0x%08x\n", (int)priv->status); |
| } |
| |
| static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
| |
| static ssize_t dump_error_log(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| char *p = (char *)buf; |
| |
| if (p[0] == '1') |
| iwl3945_dump_nic_error_log(priv); |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log); |
| |
| static ssize_t dump_event_log(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct iwl_priv *priv = dev_get_drvdata(d); |
| char *p = (char *)buf; |
| |
| if (p[0] == '1') |
| iwl3945_dump_nic_event_log(priv); |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log); |
| |
| /***************************************************************************** |
| * |
| * driver setup and tear down |
| * |
| *****************************************************************************/ |
| |
| static void iwl3945_setup_deferred_work(struct iwl_priv *priv) |
| { |
| priv->workqueue = create_singlethread_workqueue(DRV_NAME); |
| |
| init_waitqueue_head(&priv->wait_command_queue); |
| |
| INIT_WORK(&priv->up, iwl3945_bg_up); |
| INIT_WORK(&priv->restart, iwl3945_bg_restart); |
| INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish); |
| INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update); |
| INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start); |
| INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start); |
| INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll); |
| INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed); |
| INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan); |
| INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan); |
| INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check); |
| |
| iwl3945_hw_setup_deferred_work(priv); |
| |
| tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) |
| iwl3945_irq_tasklet, (unsigned long)priv); |
| } |
| |
| static void iwl3945_cancel_deferred_work(struct iwl_priv *priv) |
| { |
| iwl3945_hw_cancel_deferred_work(priv); |
| |
| cancel_delayed_work_sync(&priv->init_alive_start); |
| cancel_delayed_work(&priv->scan_check); |
| cancel_delayed_work(&priv->alive_start); |
| cancel_work_sync(&priv->beacon_update); |
| } |
| |
| static struct attribute *iwl3945_sysfs_entries[] = { |
| &dev_attr_antenna.attr, |
| &dev_attr_channels.attr, |
| &dev_attr_dump_errors.attr, |
| &dev_attr_dump_events.attr, |
| &dev_attr_flags.attr, |
| &dev_attr_filter_flags.attr, |
| #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT |
| &dev_attr_measurement.attr, |
| #endif |
| &dev_attr_retry_rate.attr, |
| &dev_attr_statistics.attr, |
| &dev_attr_status.attr, |
| &dev_attr_temperature.attr, |
| &dev_attr_tx_power.attr, |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| &dev_attr_debug_level.attr, |
| #endif |
| NULL |
| }; |
| |
| static struct attribute_group iwl3945_attribute_group = { |
| .name = NULL, /* put in device directory */ |
| .attrs = iwl3945_sysfs_entries, |
| }; |
| |
| static struct ieee80211_ops iwl3945_hw_ops = { |
| .tx = iwl3945_mac_tx, |
| .start = iwl3945_mac_start, |
| .stop = iwl3945_mac_stop, |
| .add_interface = iwl_mac_add_interface, |
| .remove_interface = iwl_mac_remove_interface, |
| .config = iwl_mac_config, |
| .configure_filter = iwl_configure_filter, |
| .set_key = iwl3945_mac_set_key, |
| .get_tx_stats = iwl_mac_get_tx_stats, |
| .conf_tx = iwl_mac_conf_tx, |
| .reset_tsf = iwl_mac_reset_tsf, |
| .bss_info_changed = iwl_bss_info_changed, |
| .hw_scan = iwl_mac_hw_scan |
| }; |
| |
| static int iwl3945_init_drv(struct iwl_priv *priv) |
| { |
| int ret; |
| struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
| |
| priv->retry_rate = 1; |
| priv->ibss_beacon = NULL; |
| |
| spin_lock_init(&priv->lock); |
| spin_lock_init(&priv->sta_lock); |
| spin_lock_init(&priv->hcmd_lock); |
| |
| INIT_LIST_HEAD(&priv->free_frames); |
| |
| mutex_init(&priv->mutex); |
| |
| /* Clear the driver's (not device's) station table */ |
| iwl_clear_stations_table(priv); |
| |
| priv->data_retry_limit = -1; |
| priv->ieee_channels = NULL; |
| priv->ieee_rates = NULL; |
| priv->band = IEEE80211_BAND_2GHZ; |
| |
| priv->iw_mode = NL80211_IFTYPE_STATION; |
| |
| iwl_reset_qos(priv); |
| |
| priv->qos_data.qos_active = 0; |
| priv->qos_data.qos_cap.val = 0; |
| |
| priv->rates_mask = IWL_RATES_MASK; |
| priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER; |
| |
| if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { |
| IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n", |
| eeprom->version); |
| ret = -EINVAL; |
| goto err; |
| } |
| ret = iwl_init_channel_map(priv); |
| if (ret) { |
| IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); |
| goto err; |
| } |
| |
| /* Set up txpower settings in driver for all channels */ |
| if (iwl3945_txpower_set_from_eeprom(priv)) { |
| ret = -EIO; |
| goto err_free_channel_map; |
| } |
| |
| ret = iwlcore_init_geos(priv); |
| if (ret) { |
| IWL_ERR(priv, "initializing geos failed: %d\n", ret); |
| goto err_free_channel_map; |
| } |
| iwl3945_init_hw_rates(priv, priv->ieee_rates); |
| |
| return 0; |
| |
| err_free_channel_map: |
| iwl_free_channel_map(priv); |
| err: |
| return ret; |
| } |
| |
| static int iwl3945_setup_mac(struct iwl_priv *priv) |
| { |
| int ret; |
| struct ieee80211_hw *hw = priv->hw; |
| |
| hw->rate_control_algorithm = "iwl-3945-rs"; |
| hw->sta_data_size = sizeof(struct iwl3945_sta_priv); |
| |
| /* Tell mac80211 our characteristics */ |
| hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_NOISE_DBM | |
| IEEE80211_HW_SPECTRUM_MGMT | |
| IEEE80211_HW_SUPPORTS_PS | |
| IEEE80211_HW_SUPPORTS_DYNAMIC_PS; |
| |
| hw->wiphy->interface_modes = |
| BIT(NL80211_IFTYPE_STATION) | |
| BIT(NL80211_IFTYPE_ADHOC); |
| |
| hw->wiphy->custom_regulatory = true; |
| |
| /* Firmware does not support this */ |
| hw->wiphy->disable_beacon_hints = true; |
| |
| hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945; |
| /* we create the 802.11 header and a zero-length SSID element */ |
| hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2; |
| |
| /* Default value; 4 EDCA QOS priorities */ |
| hw->queues = 4; |
| |
| if (priv->bands[IEEE80211_BAND_2GHZ].n_channels) |
| priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| &priv->bands[IEEE80211_BAND_2GHZ]; |
| |
| if (priv->bands[IEEE80211_BAND_5GHZ].n_channels) |
| priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| &priv->bands[IEEE80211_BAND_5GHZ]; |
| |
| ret = ieee80211_register_hw(priv->hw); |
| if (ret) { |
| IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); |
| return ret; |
| } |
| priv->mac80211_registered = 1; |
| |
| return 0; |
| } |
| |
| static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| int err = 0; |
| struct iwl_priv *priv; |
| struct ieee80211_hw *hw; |
| struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); |
| struct iwl3945_eeprom *eeprom; |
| unsigned long flags; |
| |
| /*********************** |
| * 1. Allocating HW data |
| * ********************/ |
| |
| /* mac80211 allocates memory for this device instance, including |
| * space for this driver's private structure */ |
| hw = iwl_alloc_all(cfg, &iwl3945_hw_ops); |
| if (hw == NULL) { |
| printk(KERN_ERR DRV_NAME "Can not allocate network device\n"); |
| err = -ENOMEM; |
| goto out; |
| } |
| priv = hw->priv; |
| SET_IEEE80211_DEV(hw, &pdev->dev); |
| |
| /* |
| * Disabling hardware scan means that mac80211 will perform scans |
| * "the hard way", rather than using device's scan. |
| */ |
| if (iwl3945_mod_params.disable_hw_scan) { |
| IWL_DEBUG_INFO(priv, "Disabling hw_scan\n"); |
| iwl3945_hw_ops.hw_scan = NULL; |
| } |
| |
| |
| IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); |
| priv->cfg = cfg; |
| priv->pci_dev = pdev; |
| priv->inta_mask = CSR_INI_SET_MASK; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| atomic_set(&priv->restrict_refcnt, 0); |
| #endif |
| if (iwl_alloc_traffic_mem(priv)) |
| IWL_ERR(priv, "Not enough memory to generate traffic log\n"); |
| |
| /*************************** |
| * 2. Initializing PCI bus |
| * *************************/ |
| if (pci_enable_device(pdev)) { |
| err = -ENODEV; |
| goto out_ieee80211_free_hw; |
| } |
| |
| pci_set_master(pdev); |
| |
| err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (err) { |
| IWL_WARN(priv, "No suitable DMA available.\n"); |
| goto out_pci_disable_device; |
| } |
| |
| pci_set_drvdata(pdev, priv); |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) |
| goto out_pci_disable_device; |
| |
| /*********************** |
| * 3. Read REV Register |
| * ********************/ |
| priv->hw_base = pci_iomap(pdev, 0, 0); |
| if (!priv->hw_base) { |
| err = -ENODEV; |
| goto out_pci_release_regions; |
| } |
| |
| IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n", |
| (unsigned long long) pci_resource_len(pdev, 0)); |
| IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base); |
| |
| /* We disable the RETRY_TIMEOUT register (0x41) to keep |
| * PCI Tx retries from interfering with C3 CPU state */ |
| pci_write_config_byte(pdev, 0x41, 0x00); |
| |
| /* this spin lock will be used in apm_ops.init and EEPROM access |
| * we should init now |
| */ |
| spin_lock_init(&priv->reg_lock); |
| |
| /* amp init */ |
| err = priv->cfg->ops->lib->apm_ops.init(priv); |
| if (err < 0) { |
| IWL_DEBUG_INFO(priv, "Failed to init the card\n"); |
| goto out_iounmap; |
| } |
| |
| /*********************** |
| * 4. Read EEPROM |
| * ********************/ |
| |
| /* Read the EEPROM */ |
| err = iwl_eeprom_init(priv); |
| if (err) { |
| IWL_ERR(priv, "Unable to init EEPROM\n"); |
| goto out_iounmap; |
| } |
| /* MAC Address location in EEPROM same for 3945/4965 */ |
| eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
| memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN); |
| IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr); |
| SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); |
| |
| /*********************** |
| * 5. Setup HW Constants |
| * ********************/ |
| /* Device-specific setup */ |
| if (iwl3945_hw_set_hw_params(priv)) { |
| IWL_ERR(priv, "failed to set hw settings\n"); |
| goto out_eeprom_free; |
| } |
| |
| /*********************** |
| * 6. Setup priv |
| * ********************/ |
| |
| err = iwl3945_init_drv(priv); |
| if (err) { |
| IWL_ERR(priv, "initializing driver failed\n"); |
| goto out_unset_hw_params; |
| } |
| |
| IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n", |
| priv->cfg->name); |
| |
| /*********************** |
| * 7. Setup Services |
| * ********************/ |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| pci_enable_msi(priv->pci_dev); |
| |
| err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr, |
| IRQF_SHARED, DRV_NAME, priv); |
| if (err) { |
| IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq); |
| goto out_disable_msi; |
| } |
| |
| err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group); |
| if (err) { |
| IWL_ERR(priv, "failed to create sysfs device attributes\n"); |
| goto out_release_irq; |
| } |
| |
| iwl_set_rxon_channel(priv, |
| &priv->bands[IEEE80211_BAND_2GHZ].channels[5]); |
| iwl3945_setup_deferred_work(priv); |
| iwl3945_setup_rx_handlers(priv); |
| |
| /********************************* |
| * 8. Setup and Register mac80211 |
| * *******************************/ |
| |
| iwl_enable_interrupts(priv); |
| |
| err = iwl3945_setup_mac(priv); |
| if (err) |
| goto out_remove_sysfs; |
| |
| err = iwl_dbgfs_register(priv, DRV_NAME); |
| if (err) |
| IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err); |
| |
| /* Start monitoring the killswitch */ |
| queue_delayed_work(priv->workqueue, &priv->rfkill_poll, |
| 2 * HZ); |
| |
| return 0; |
| |
| out_remove_sysfs: |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group); |
| out_release_irq: |
| free_irq(priv->pci_dev->irq, priv); |
| out_disable_msi: |
| pci_disable_msi(priv->pci_dev); |
| iwlcore_free_geos(priv); |
| iwl_free_channel_map(priv); |
| out_unset_hw_params: |
| iwl3945_unset_hw_params(priv); |
| out_eeprom_free: |
| iwl_eeprom_free(priv); |
| out_iounmap: |
| pci_iounmap(pdev, priv->hw_base); |
| out_pci_release_regions: |
| pci_release_regions(pdev); |
| out_pci_disable_device: |
| pci_set_drvdata(pdev, NULL); |
| pci_disable_device(pdev); |
| out_ieee80211_free_hw: |
| ieee80211_free_hw(priv->hw); |
| iwl_free_traffic_mem(priv); |
| out: |
| return err; |
| } |
| |
| static void __devexit iwl3945_pci_remove(struct pci_dev *pdev) |
| { |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| unsigned long flags; |
| |
| if (!priv) |
| return; |
| |
| IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); |
| |
| iwl_dbgfs_unregister(priv); |
| |
| set_bit(STATUS_EXIT_PENDING, &priv->status); |
| |
| if (priv->mac80211_registered) { |
| ieee80211_unregister_hw(priv->hw); |
| priv->mac80211_registered = 0; |
| } else { |
| iwl3945_down(priv); |
| } |
| |
| /* make sure we flush any pending irq or |
| * tasklet for the driver |
| */ |
| spin_lock_irqsave(&priv->lock, flags); |
| iwl_disable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_synchronize_irq(priv); |
| |
| sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group); |
| |
| cancel_delayed_work_sync(&priv->rfkill_poll); |
| |
| iwl3945_dealloc_ucode_pci(priv); |
| |
| if (priv->rxq.bd) |
| iwl3945_rx_queue_free(priv, &priv->rxq); |
| iwl3945_hw_txq_ctx_free(priv); |
| |
| iwl3945_unset_hw_params(priv); |
| iwl_clear_stations_table(priv); |
| |
| /*netif_stop_queue(dev); */ |
| flush_workqueue(priv->workqueue); |
| |
| /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes |
| * priv->workqueue... so we can't take down the workqueue |
| * until now... */ |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| iwl_free_traffic_mem(priv); |
| |
| free_irq(pdev->irq, priv); |
| pci_disable_msi(pdev); |
| |
| pci_iounmap(pdev, priv->hw_base); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| |
| iwl_free_channel_map(priv); |
| iwlcore_free_geos(priv); |
| kfree(priv->scan); |
| if (priv->ibss_beacon) |
| dev_kfree_skb(priv->ibss_beacon); |
| |
| ieee80211_free_hw(priv->hw); |
| } |
| |
| |
| /***************************************************************************** |
| * |
| * driver and module entry point |
| * |
| *****************************************************************************/ |
| |
| static struct pci_driver iwl3945_driver = { |
| .name = DRV_NAME, |
| .id_table = iwl3945_hw_card_ids, |
| .probe = iwl3945_pci_probe, |
| .remove = __devexit_p(iwl3945_pci_remove), |
| #ifdef CONFIG_PM |
| .suspend = iwl_pci_suspend, |
| .resume = iwl_pci_resume, |
| #endif |
| }; |
| |
| static int __init iwl3945_init(void) |
| { |
| |
| int ret; |
| printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); |
| printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); |
| |
| ret = iwl3945_rate_control_register(); |
| if (ret) { |
| printk(KERN_ERR DRV_NAME |
| "Unable to register rate control algorithm: %d\n", ret); |
| return ret; |
| } |
| |
| ret = pci_register_driver(&iwl3945_driver); |
| if (ret) { |
| printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n"); |
| goto error_register; |
| } |
| |
| return ret; |
| |
| error_register: |
| iwl3945_rate_control_unregister(); |
| return ret; |
| } |
| |
| static void __exit iwl3945_exit(void) |
| { |
| pci_unregister_driver(&iwl3945_driver); |
| iwl3945_rate_control_unregister(); |
| } |
| |
| MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX)); |
| |
| module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444); |
| MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); |
| module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444); |
| MODULE_PARM_DESC(swcrypto, |
| "using software crypto (default 1 [software])\n"); |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| module_param_named(debug, iwl_debug_level, uint, 0644); |
| MODULE_PARM_DESC(debug, "debug output mask"); |
| #endif |
| module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444); |
| MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)"); |
| module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444); |
| MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error"); |
| |
| module_exit(iwl3945_exit); |
| module_init(iwl3945_init); |