| // SPDX-License-Identifier: GPL-2.0-only |
| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2011 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. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/delay.h> |
| #include <linux/sched.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/firmware.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_arp.h> |
| |
| #include <net/ieee80211_radiotap.h> |
| #include <net/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #define DRV_NAME "iwl3945" |
| |
| #include "commands.h" |
| #include "common.h" |
| #include "3945.h" |
| #include "iwl-spectrum.h" |
| |
| /* |
| * module name, copyright, version, etc. |
| */ |
| |
| #define DRV_DESCRIPTION \ |
| "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| #define VD "d" |
| #else |
| #define VD |
| #endif |
| |
| /* |
| * add "s" to indicate spectrum measurement included. |
| * we add it here to be consistent with previous releases in which |
| * this was configurable. |
| */ |
| #define DRV_VERSION IWLWIFI_VERSION VD "s" |
| #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation" |
| #define DRV_AUTHOR "<ilw@linux.intel.com>" |
| |
| MODULE_DESCRIPTION(DRV_DESCRIPTION); |
| MODULE_VERSION(DRV_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| MODULE_LICENSE("GPL"); |
| |
| /* module parameters */ |
| struct il_mod_params il3945_mod_params = { |
| .sw_crypto = 1, |
| .restart_fw = 1, |
| .disable_hw_scan = 1, |
| /* the rest are 0 by default */ |
| }; |
| |
| /** |
| * il3945_get_antenna_flags - Get antenna flags for RXON command |
| * @il: eeprom and antenna fields are used to determine antenna flags |
| * |
| * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed |
| * il3945_mod_params.antenna specifies the antenna diversity mode: |
| * |
| * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself |
| * IL_ANTENNA_MAIN - Force MAIN antenna |
| * IL_ANTENNA_AUX - Force AUX antenna |
| */ |
| __le32 |
| il3945_get_antenna_flags(const struct il_priv *il) |
| { |
| struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; |
| |
| switch (il3945_mod_params.antenna) { |
| case IL_ANTENNA_DIVERSITY: |
| return 0; |
| |
| case IL_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 IL_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 */ |
| IL_ERR("Bad antenna selector value (0x%x)\n", |
| il3945_mod_params.antenna); |
| |
| return 0; /* "diversity" is default if error */ |
| } |
| |
| static int |
| il3945_set_ccmp_dynamic_key_info(struct il_priv *il, |
| 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 == il->hw_params.bcast_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(&il->sta_lock, flags); |
| il->stations[sta_id].keyinfo.cipher = keyconf->cipher; |
| il->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen); |
| |
| memcpy(il->stations[sta_id].sta.key.key, keyconf->key, keyconf->keylen); |
| |
| if ((il->stations[sta_id].sta.key. |
| key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) |
| il->stations[sta_id].sta.key.key_offset = |
| il_get_free_ucode_key_idx(il); |
| /* else, we are overriding an existing key => no need to allocated room |
| * in uCode. */ |
| |
| WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
| "no space for a new key"); |
| |
| il->stations[sta_id].sta.key.key_flags = key_flags; |
| il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| D_INFO("hwcrypto: modify ucode station key info\n"); |
| |
| ret = il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC); |
| |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| return ret; |
| } |
| |
| static int |
| il3945_set_tkip_dynamic_key_info(struct il_priv *il, |
| struct ieee80211_key_conf *keyconf, u8 sta_id) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static int |
| il3945_set_wep_dynamic_key_info(struct il_priv *il, |
| struct ieee80211_key_conf *keyconf, u8 sta_id) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static int |
| il3945_clear_sta_key_info(struct il_priv *il, u8 sta_id) |
| { |
| unsigned long flags; |
| struct il_addsta_cmd sta_cmd; |
| |
| spin_lock_irqsave(&il->sta_lock, flags); |
| memset(&il->stations[sta_id].keyinfo, 0, sizeof(struct il_hw_key)); |
| memset(&il->stations[sta_id].sta.key, 0, sizeof(struct il4965_keyinfo)); |
| il->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; |
| il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| memcpy(&sta_cmd, &il->stations[sta_id].sta, |
| sizeof(struct il_addsta_cmd)); |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| D_INFO("hwcrypto: clear ucode station key info\n"); |
| return il_send_add_sta(il, &sta_cmd, CMD_SYNC); |
| } |
| |
| static int |
| il3945_set_dynamic_key(struct il_priv *il, struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| int ret = 0; |
| |
| keyconf->hw_key_idx = HW_KEY_DYNAMIC; |
| |
| switch (keyconf->cipher) { |
| case WLAN_CIPHER_SUITE_CCMP: |
| ret = il3945_set_ccmp_dynamic_key_info(il, keyconf, sta_id); |
| break; |
| case WLAN_CIPHER_SUITE_TKIP: |
| ret = il3945_set_tkip_dynamic_key_info(il, keyconf, sta_id); |
| break; |
| case WLAN_CIPHER_SUITE_WEP40: |
| case WLAN_CIPHER_SUITE_WEP104: |
| ret = il3945_set_wep_dynamic_key_info(il, keyconf, sta_id); |
| break; |
| default: |
| IL_ERR("Unknown alg: %s alg=%x\n", __func__, keyconf->cipher); |
| ret = -EINVAL; |
| } |
| |
| D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n", |
| keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta_id, ret); |
| |
| return ret; |
| } |
| |
| static int |
| il3945_remove_static_key(struct il_priv *il) |
| { |
| int ret = -EOPNOTSUPP; |
| |
| return ret; |
| } |
| |
| static int |
| il3945_set_static_key(struct il_priv *il, struct ieee80211_key_conf *key) |
| { |
| if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
| key->cipher == WLAN_CIPHER_SUITE_WEP104) |
| return -EOPNOTSUPP; |
| |
| IL_ERR("Static key invalid: cipher %x\n", key->cipher); |
| return -EINVAL; |
| } |
| |
| static void |
| il3945_clear_free_frames(struct il_priv *il) |
| { |
| struct list_head *element; |
| |
| D_INFO("%d frames on pre-allocated heap on clear.\n", il->frames_count); |
| |
| while (!list_empty(&il->free_frames)) { |
| element = il->free_frames.next; |
| list_del(element); |
| kfree(list_entry(element, struct il3945_frame, list)); |
| il->frames_count--; |
| } |
| |
| if (il->frames_count) { |
| IL_WARN("%d frames still in use. Did we lose one?\n", |
| il->frames_count); |
| il->frames_count = 0; |
| } |
| } |
| |
| static struct il3945_frame * |
| il3945_get_free_frame(struct il_priv *il) |
| { |
| struct il3945_frame *frame; |
| struct list_head *element; |
| if (list_empty(&il->free_frames)) { |
| frame = kzalloc(sizeof(*frame), GFP_KERNEL); |
| if (!frame) { |
| IL_ERR("Could not allocate frame!\n"); |
| return NULL; |
| } |
| |
| il->frames_count++; |
| return frame; |
| } |
| |
| element = il->free_frames.next; |
| list_del(element); |
| return list_entry(element, struct il3945_frame, list); |
| } |
| |
| static void |
| il3945_free_frame(struct il_priv *il, struct il3945_frame *frame) |
| { |
| memset(frame, 0, sizeof(*frame)); |
| list_add(&frame->list, &il->free_frames); |
| } |
| |
| unsigned int |
| il3945_fill_beacon_frame(struct il_priv *il, struct ieee80211_hdr *hdr, |
| int left) |
| { |
| |
| if (!il_is_associated(il) || !il->beacon_skb) |
| return 0; |
| |
| if (il->beacon_skb->len > left) |
| return 0; |
| |
| memcpy(hdr, il->beacon_skb->data, il->beacon_skb->len); |
| |
| return il->beacon_skb->len; |
| } |
| |
| static int |
| il3945_send_beacon_cmd(struct il_priv *il) |
| { |
| struct il3945_frame *frame; |
| unsigned int frame_size; |
| int rc; |
| u8 rate; |
| |
| frame = il3945_get_free_frame(il); |
| |
| if (!frame) { |
| IL_ERR("Could not obtain free frame buffer for beacon " |
| "command.\n"); |
| return -ENOMEM; |
| } |
| |
| rate = il_get_lowest_plcp(il); |
| |
| frame_size = il3945_hw_get_beacon_cmd(il, frame, rate); |
| |
| rc = il_send_cmd_pdu(il, C_TX_BEACON, frame_size, &frame->u.cmd[0]); |
| |
| il3945_free_frame(il, frame); |
| |
| return rc; |
| } |
| |
| static void |
| il3945_unset_hw_params(struct il_priv *il) |
| { |
| if (il->_3945.shared_virt) |
| dma_free_coherent(&il->pci_dev->dev, |
| sizeof(struct il3945_shared), |
| il->_3945.shared_virt, il->_3945.shared_phys); |
| } |
| |
| static void |
| il3945_build_tx_cmd_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info, |
| struct il_device_cmd *cmd, |
| struct sk_buff *skb_frag, int sta_id) |
| { |
| struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; |
| struct il_hw_key *keyinfo = &il->stations[sta_id].keyinfo; |
| |
| tx_cmd->sec_ctl = 0; |
| |
| switch (keyinfo->cipher) { |
| case WLAN_CIPHER_SUITE_CCMP: |
| tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
| memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen); |
| D_TX("tx_cmd with AES hwcrypto\n"); |
| break; |
| |
| case WLAN_CIPHER_SUITE_TKIP: |
| break; |
| |
| case WLAN_CIPHER_SUITE_WEP104: |
| tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; |
| /* fall through */ |
| case WLAN_CIPHER_SUITE_WEP40: |
| tx_cmd->sec_ctl |= |
| TX_CMD_SEC_WEP | (info->control.hw_key-> |
| hw_key_idx & TX_CMD_SEC_MSK) << |
| TX_CMD_SEC_SHIFT; |
| |
| memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen); |
| |
| D_TX("Configuring packet for WEP encryption " "with key %d\n", |
| info->control.hw_key->hw_key_idx); |
| break; |
| |
| default: |
| IL_ERR("Unknown encode cipher %x\n", keyinfo->cipher); |
| break; |
| } |
| } |
| |
| /* |
| * handle build C_TX command notification. |
| */ |
| static void |
| il3945_build_tx_cmd_basic(struct il_priv *il, struct il_device_cmd *cmd, |
| struct ieee80211_tx_info *info, |
| struct ieee80211_hdr *hdr, u8 std_id) |
| { |
| struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; |
| __le32 tx_flags = tx_cmd->tx_flags; |
| __le16 fc = hdr->frame_control; |
| |
| tx_cmd->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_cmd->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_cmd->tid_tspec = qc[0] & 0xf; |
| tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; |
| } else { |
| tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; |
| } |
| |
| il_tx_cmd_protection(il, info, fc, &tx_flags); |
| |
| 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_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); |
| else |
| tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); |
| } else { |
| tx_cmd->timeout.pm_frame_timeout = 0; |
| } |
| |
| tx_cmd->driver_txop = 0; |
| tx_cmd->tx_flags = tx_flags; |
| tx_cmd->next_frame_len = 0; |
| } |
| |
| /* |
| * start C_TX command process |
| */ |
| static int |
| il3945_tx_skb(struct il_priv *il, |
| struct ieee80211_sta *sta, |
| struct sk_buff *skb) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| struct il3945_tx_cmd *tx_cmd; |
| struct il_tx_queue *txq = NULL; |
| struct il_queue *q = NULL; |
| struct il_device_cmd *out_cmd; |
| struct il_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, hdr_len; |
| u16 firstlen, secondlen; |
| u8 sta_id; |
| u8 tid = 0; |
| __le16 fc; |
| u8 wait_write_ptr = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| if (il_is_rfkill(il)) { |
| D_DROP("Dropping - RF KILL\n"); |
| goto drop_unlock; |
| } |
| |
| if ((ieee80211_get_tx_rate(il->hw, info)->hw_value & 0xFF) == |
| IL_INVALID_RATE) { |
| IL_ERR("ERROR: No TX rate available.\n"); |
| goto drop_unlock; |
| } |
| |
| fc = hdr->frame_control; |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| if (ieee80211_is_auth(fc)) |
| D_TX("Sending AUTH frame\n"); |
| else if (ieee80211_is_assoc_req(fc)) |
| D_TX("Sending ASSOC frame\n"); |
| else if (ieee80211_is_reassoc_req(fc)) |
| D_TX("Sending REASSOC frame\n"); |
| #endif |
| |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| hdr_len = ieee80211_hdrlen(fc); |
| |
| /* Find idx into station table for destination station */ |
| sta_id = il_sta_id_or_broadcast(il, sta); |
| if (sta_id == IL_INVALID_STATION) { |
| D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1); |
| goto drop; |
| } |
| |
| D_RATE("station Id %d\n", sta_id); |
| |
| if (ieee80211_is_data_qos(fc)) { |
| u8 *qc = ieee80211_get_qos_ctl(hdr); |
| tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; |
| if (unlikely(tid >= MAX_TID_COUNT)) |
| goto drop; |
| } |
| |
| /* Descriptor for chosen Tx queue */ |
| txq = &il->txq[txq_id]; |
| q = &txq->q; |
| |
| if ((il_queue_space(q) < q->high_mark)) |
| goto drop; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| |
| idx = il_get_cmd_idx(q, q->write_ptr, 0); |
| |
| txq->skbs[q->write_ptr] = skb; |
| |
| /* Init first empty entry in queue's array of Tx/cmd buffers */ |
| out_cmd = txq->cmd[idx]; |
| out_meta = &txq->meta[idx]; |
| tx_cmd = (struct il3945_tx_cmd *)out_cmd->cmd.payload; |
| memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); |
| memset(tx_cmd, 0, sizeof(*tx_cmd)); |
| |
| /* |
| * Set up the Tx-command (not MAC!) header. |
| * Store the chosen Tx queue and TFD idx 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 = C_TX; |
| out_cmd->hdr.sequence = |
| cpu_to_le16((u16) |
| (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr))); |
| |
| /* Copy MAC header from skb into command buffer */ |
| memcpy(tx_cmd->hdr, hdr, hdr_len); |
| |
| if (info->control.hw_key) |
| il3945_build_tx_cmd_hwcrypto(il, info, out_cmd, skb, sta_id); |
| |
| /* TODO need this for burst mode later on */ |
| il3945_build_tx_cmd_basic(il, out_cmd, info, hdr, sta_id); |
| |
| il3945_hw_build_tx_cmd_rate(il, out_cmd, info, hdr, sta_id); |
| |
| /* Total # bytes to be transmitted */ |
| tx_cmd->len = cpu_to_le16((u16) skb->len); |
| |
| tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; |
| tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; |
| |
| /* |
| * 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 il3945_tx_cmd) + sizeof(struct il_cmd_header) + |
| hdr_len; |
| firstlen = (len + 3) & ~3; |
| |
| /* Physical address of this Tx command's header (not MAC header!), |
| * within command buffer array. */ |
| txcmd_phys = |
| pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen, |
| PCI_DMA_TODEVICE); |
| if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys))) |
| goto drop_unlock; |
| |
| /* Set up TFD's 2nd entry to point directly to remainder of skb, |
| * if any (802.11 null frames have no payload). */ |
| secondlen = skb->len - hdr_len; |
| if (secondlen > 0) { |
| phys_addr = |
| pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen, |
| PCI_DMA_TODEVICE); |
| if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) |
| goto drop_unlock; |
| } |
| |
| /* Add buffer containing Tx command and MAC(!) header to TFD's |
| * first entry */ |
| il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0); |
| dma_unmap_addr_set(out_meta, mapping, txcmd_phys); |
| dma_unmap_len_set(out_meta, len, firstlen); |
| if (secondlen > 0) |
| il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, 0, |
| U32_PAD(secondlen)); |
| |
| if (!ieee80211_has_morefrags(hdr->frame_control)) { |
| txq->need_update = 1; |
| } else { |
| wait_write_ptr = 1; |
| txq->need_update = 0; |
| } |
| |
| il_update_stats(il, true, fc, skb->len); |
| |
| D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence)); |
| D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); |
| il_print_hex_dump(il, IL_DL_TX, tx_cmd, sizeof(*tx_cmd)); |
| il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr, |
| ieee80211_hdrlen(fc)); |
| |
| /* Tell device the write idx *just past* this latest filled TFD */ |
| q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); |
| il_txq_update_write_ptr(il, txq); |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| if (il_queue_space(q) < q->high_mark && il->mac80211_registered) { |
| if (wait_write_ptr) { |
| spin_lock_irqsave(&il->lock, flags); |
| txq->need_update = 1; |
| il_txq_update_write_ptr(il, txq); |
| spin_unlock_irqrestore(&il->lock, flags); |
| } |
| |
| il_stop_queue(il, txq); |
| } |
| |
| return 0; |
| |
| drop_unlock: |
| spin_unlock_irqrestore(&il->lock, flags); |
| drop: |
| return -1; |
| } |
| |
| static int |
| il3945_get_measurement(struct il_priv *il, |
| struct ieee80211_measurement_params *params, u8 type) |
| { |
| struct il_spectrum_cmd spectrum; |
| struct il_rx_pkt *pkt; |
| struct il_host_cmd cmd = { |
| .id = C_SPECTRUM_MEASUREMENT, |
| .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 (il_is_associated(il)) |
| add_time = |
| il_usecs_to_beacons(il, |
| le64_to_cpu(params->start_time) - |
| il->_3945.last_tsf, |
| le16_to_cpu(il->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 (il_is_associated(il)) |
| spectrum.start_time = |
| il_add_beacon_time(il, il->_3945.last_beacon_time, add_time, |
| le16_to_cpu(il->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 (il->active.flags & RXON_FLG_BAND_24G_MSK) |
| spectrum.flags |= |
| RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
| RXON_FLG_TGG_PROTECT_MSK; |
| |
| rc = il_send_cmd_sync(il, &cmd); |
| if (rc) |
| return rc; |
| |
| pkt = (struct il_rx_pkt *)cmd.reply_page; |
| if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
| IL_ERR("Bad return from N_RX_ON_ASSOC command\n"); |
| rc = -EIO; |
| } |
| |
| spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status); |
| switch (spectrum_resp_status) { |
| case 0: /* Command will be handled */ |
| if (pkt->u.spectrum.id != 0xff) { |
| D_INFO("Replaced existing measurement: %d\n", |
| pkt->u.spectrum.id); |
| il->measurement_status &= ~MEASUREMENT_READY; |
| } |
| il->measurement_status |= MEASUREMENT_ACTIVE; |
| rc = 0; |
| break; |
| |
| case 1: /* Command will not be handled */ |
| rc = -EAGAIN; |
| break; |
| } |
| |
| il_free_pages(il, cmd.reply_page); |
| |
| return rc; |
| } |
| |
| static void |
| il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il_alive_resp *palive; |
| struct delayed_work *pwork; |
| |
| palive = &pkt->u.alive_frame; |
| |
| D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", |
| palive->is_valid, palive->ver_type, palive->ver_subtype); |
| |
| if (palive->ver_subtype == INITIALIZE_SUBTYPE) { |
| D_INFO("Initialization Alive received.\n"); |
| memcpy(&il->card_alive_init, &pkt->u.alive_frame, |
| sizeof(struct il_alive_resp)); |
| pwork = &il->init_alive_start; |
| } else { |
| D_INFO("Runtime Alive received.\n"); |
| memcpy(&il->card_alive, &pkt->u.alive_frame, |
| sizeof(struct il_alive_resp)); |
| pwork = &il->alive_start; |
| il3945_disable_events(il); |
| } |
| |
| /* 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(il->workqueue, pwork, msecs_to_jiffies(5)); |
| else |
| IL_WARN("uCode did not respond OK.\n"); |
| } |
| |
| static void |
| il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| #endif |
| |
| D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status); |
| } |
| |
| static void |
| il3945_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| struct il3945_beacon_notif *beacon = &(pkt->u.beacon_status); |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| u8 rate = beacon->beacon_notify_hdr.rate; |
| |
| D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n", |
| le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, |
| beacon->beacon_notify_hdr.failure_frame, |
| le32_to_cpu(beacon->ibss_mgr_status), |
| le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); |
| #endif |
| |
| il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); |
| |
| } |
| |
| /* Handle notification from uCode that card's power state is changing |
| * due to software, hardware, or critical temperature RFKILL */ |
| static void |
| il3945_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb) |
| { |
| struct il_rx_pkt *pkt = rxb_addr(rxb); |
| u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
| unsigned long status = il->status; |
| |
| IL_WARN("Card state received: HW:%s SW:%s\n", |
| (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
| (flags & SW_CARD_DISABLED) ? "Kill" : "On"); |
| |
| _il_wr(il, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| if (flags & HW_CARD_DISABLED) |
| set_bit(S_RFKILL, &il->status); |
| else |
| clear_bit(S_RFKILL, &il->status); |
| |
| il_scan_cancel(il); |
| |
| if ((test_bit(S_RFKILL, &status) != |
| test_bit(S_RFKILL, &il->status))) |
| wiphy_rfkill_set_hw_state(il->hw->wiphy, |
| test_bit(S_RFKILL, &il->status)); |
| else |
| wake_up(&il->wait_command_queue); |
| } |
| |
| /** |
| * il3945_setup_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 |
| il3945_setup_handlers(struct il_priv *il) |
| { |
| il->handlers[N_ALIVE] = il3945_hdl_alive; |
| il->handlers[C_ADD_STA] = il3945_hdl_add_sta; |
| il->handlers[N_ERROR] = il_hdl_error; |
| il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa; |
| il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement; |
| il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep; |
| il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats; |
| il->handlers[N_BEACON] = il3945_hdl_beacon; |
| |
| /* |
| * The same handler is used for both the REPLY to a discrete |
| * stats request from the host as well as for the periodic |
| * stats notifications (after received beacons) from the uCode. |
| */ |
| il->handlers[C_STATS] = il3945_hdl_c_stats; |
| il->handlers[N_STATS] = il3945_hdl_stats; |
| |
| il_setup_rx_scan_handlers(il); |
| il->handlers[N_CARD_STATE] = il3945_hdl_card_state; |
| |
| /* Set up hardware specific Rx handlers */ |
| il3945_hw_handler_setup(il); |
| } |
| |
| /************************** RX-FUNCTIONS ****************************/ |
| /* |
| * Rx theory of operation |
| * |
| * The host allocates 32 DMA target addresses and passes the host address |
| * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is |
| * 0 to 31 |
| * |
| * Rx Queue Indexes |
| * The host/firmware share two idx registers for managing the Rx buffers. |
| * |
| * The READ idx 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 idx is managed by the firmware once the card is enabled. |
| * |
| * The WRITE idx 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 |
| * IDX position, and WRITE to the last (READ - 1 wrapped) |
| * |
| * When the firmware places a packet in a buffer, it will advance the READ idx |
| * and fire the RX interrupt. The driver can then query the READ idx and |
| * process as many packets as possible, moving the WRITE idx 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 il3945_rx_replenish (scheduled) if 'processed' != 'read' then the |
| * iwl->rxq is replenished and the READ IDX is updated (updating the |
| * 'processed' and 'read' driver idxes as well) |
| * + A received packet is processed and handed to the kernel network stack, |
| * detached from the iwl->rxq. The driver 'processed' idx 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 |
| * IDX 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: |
| * |
| * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls |
| * il3945_rx_queue_restock |
| * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx |
| * queue, updates firmware pointers, and updates |
| * the WRITE idx. If insufficient rx_free buffers |
| * are available, schedules il3945_rx_replenish |
| * |
| * -- enable interrupts -- |
| * ISR - il3945_rx() Detach il_rx_bufs from pool up to the |
| * READ IDX, detaching the SKB from the pool. |
| * Moves the packet buffer from queue to rx_used. |
| * Calls il3945_rx_queue_restock to refill any empty |
| * slots. |
| * ... |
| * |
| */ |
| |
| /** |
| * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
| */ |
| static inline __le32 |
| il3945_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr) |
| { |
| return cpu_to_le32((u32) dma_addr); |
| } |
| |
| /** |
| * il3945_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' idx forward to catch up with 'processed', and |
| * also updates the memory address in the firmware to reference the new |
| * target buffer. |
| */ |
| static void |
| il3945_rx_queue_restock(struct il_priv *il) |
| { |
| struct il_rx_queue *rxq = &il->rxq; |
| struct list_head *element; |
| struct il_rx_buf *rxb; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| while (il_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 il_rx_buf, list); |
| list_del(element); |
| |
| /* Point to Rx buffer via next RBD in circular buffer */ |
| rxq->bd[rxq->write] = |
| il3945_dma_addr2rbd_ptr(il, rxb->page_dma); |
| 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(il->workqueue, &il->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); |
| il_rx_queue_update_write_ptr(il, rxq); |
| } |
| } |
| |
| /** |
| * il3945_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 il3945_rx_queue_restock. |
| * This is called as a scheduled work item (except for during initialization) |
| */ |
| static void |
| il3945_rx_allocate(struct il_priv *il, gfp_t priority) |
| { |
| struct il_rx_queue *rxq = &il->rxq; |
| struct list_head *element; |
| struct il_rx_buf *rxb; |
| struct page *page; |
| dma_addr_t page_dma; |
| unsigned long flags; |
| gfp_t gfp_mask = priority; |
| |
| while (1) { |
| spin_lock_irqsave(&rxq->lock, flags); |
| if (list_empty(&rxq->rx_used)) { |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| return; |
| } |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| |
| if (rxq->free_count > RX_LOW_WATERMARK) |
| gfp_mask |= __GFP_NOWARN; |
| |
| if (il->hw_params.rx_page_order > 0) |
| gfp_mask |= __GFP_COMP; |
| |
| /* Alloc a new receive buffer */ |
| page = alloc_pages(gfp_mask, il->hw_params.rx_page_order); |
| if (!page) { |
| if (net_ratelimit()) |
| D_INFO("Failed to allocate SKB buffer.\n"); |
| if (rxq->free_count <= RX_LOW_WATERMARK && |
| net_ratelimit()) |
| IL_ERR("Failed to allocate SKB buffer with %0x." |
| "Only %u free buffers remaining.\n", |
| priority, rxq->free_count); |
| /* 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; |
| } |
| |
| /* Get physical address of RB/SKB */ |
| page_dma = |
| pci_map_page(il->pci_dev, page, 0, |
| PAGE_SIZE << il->hw_params.rx_page_order, |
| PCI_DMA_FROMDEVICE); |
| |
| if (unlikely(pci_dma_mapping_error(il->pci_dev, page_dma))) { |
| __free_pages(page, il->hw_params.rx_page_order); |
| break; |
| } |
| |
| spin_lock_irqsave(&rxq->lock, flags); |
| |
| if (list_empty(&rxq->rx_used)) { |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| pci_unmap_page(il->pci_dev, page_dma, |
| PAGE_SIZE << il->hw_params.rx_page_order, |
| PCI_DMA_FROMDEVICE); |
| __free_pages(page, il->hw_params.rx_page_order); |
| return; |
| } |
| |
| element = rxq->rx_used.next; |
| rxb = list_entry(element, struct il_rx_buf, list); |
| list_del(element); |
| |
| rxb->page = page; |
| rxb->page_dma = page_dma; |
| list_add_tail(&rxb->list, &rxq->rx_free); |
| rxq->free_count++; |
| il->alloc_rxb_page++; |
| |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| } |
| } |
| |
| void |
| il3945_rx_queue_reset(struct il_priv *il, struct il_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].page != NULL) { |
| pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
| PAGE_SIZE << il->hw_params.rx_page_order, |
| PCI_DMA_FROMDEVICE); |
| __il_free_pages(il, rxq->pool[i].page); |
| rxq->pool[i].page = 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->write_actual = 0; |
| rxq->free_count = 0; |
| spin_unlock_irqrestore(&rxq->lock, flags); |
| } |
| |
| void |
| il3945_rx_replenish(void *data) |
| { |
| struct il_priv *il = data; |
| unsigned long flags; |
| |
| il3945_rx_allocate(il, GFP_KERNEL); |
| |
| spin_lock_irqsave(&il->lock, flags); |
| il3945_rx_queue_restock(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| } |
| |
| static void |
| il3945_rx_replenish_now(struct il_priv *il) |
| { |
| il3945_rx_allocate(il, GFP_ATOMIC); |
| |
| il3945_rx_queue_restock(il); |
| } |
| |
| /* 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 |
| il3945_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq) |
| { |
| int i; |
| for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { |
| if (rxq->pool[i].page != NULL) { |
| pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
| PAGE_SIZE << il->hw_params.rx_page_order, |
| PCI_DMA_FROMDEVICE); |
| __il_free_pages(il, rxq->pool[i].page); |
| rxq->pool[i].page = NULL; |
| } |
| } |
| |
| dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
| rxq->bd_dma); |
| dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_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 |
| il3945_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]; |
| } |
| |
| /** |
| * il3945_rx_handle - Main entry function for receiving responses from uCode |
| * |
| * Uses the il->handlers callback function array to invoke |
| * the appropriate handlers, including command responses, |
| * frame-received notifications, and other notifications. |
| */ |
| static void |
| il3945_rx_handle(struct il_priv *il) |
| { |
| struct il_rx_buf *rxb; |
| struct il_rx_pkt *pkt; |
| struct il_rx_queue *rxq = &il->rxq; |
| u32 r, i; |
| int reclaim; |
| unsigned long flags; |
| u8 fill_rx = 0; |
| u32 count = 8; |
| int total_empty = 0; |
| |
| /* uCode's read idx (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 - 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) |
| D_RX("r = %d, i = %d\n", r, i); |
| |
| while (i != r) { |
| int len; |
| |
| 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_page(il->pci_dev, rxb->page_dma, |
| PAGE_SIZE << il->hw_params.rx_page_order, |
| PCI_DMA_FROMDEVICE); |
| pkt = rxb_addr(rxb); |
| |
| len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
| len += sizeof(u32); /* account for status word */ |
| |
| reclaim = il_need_reclaim(il, pkt); |
| |
| /* Based on type of command response or notification, |
| * handle those that need handling via function in |
| * handlers table. See il3945_setup_handlers() */ |
| if (il->handlers[pkt->hdr.cmd]) { |
| D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i, |
| il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); |
| il->isr_stats.handlers[pkt->hdr.cmd]++; |
| il->handlers[pkt->hdr.cmd] (il, rxb); |
| } else { |
| /* No handling needed */ |
| D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r, |
| i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); |
| } |
| |
| /* |
| * XXX: After here, we should always check rxb->page |
| * against NULL before touching it or its virtual |
| * memory (pkt). Because some handler might have |
| * already taken or freed the pages. |
| */ |
| |
| if (reclaim) { |
| /* Invoke any callbacks, transfer the buffer to caller, |
| * and fire off the (possibly) blocking il_send_cmd() |
| * as we reclaim the driver command queue */ |
| if (rxb->page) |
| il_tx_cmd_complete(il, rxb); |
| else |
| IL_WARN("Claim null rxb?\n"); |
| } |
| |
| /* Reuse the page if possible. For notification packets and |
| * SKBs that fail to Rx correctly, add them back into the |
| * rx_free list for reuse later. */ |
| spin_lock_irqsave(&rxq->lock, flags); |
| if (rxb->page != NULL) { |
| rxb->page_dma = |
| pci_map_page(il->pci_dev, rxb->page, 0, |
| PAGE_SIZE << il->hw_params. |
| rx_page_order, PCI_DMA_FROMDEVICE); |
| if (unlikely(pci_dma_mapping_error(il->pci_dev, |
| rxb->page_dma))) { |
| __il_free_pages(il, rxb->page); |
| rxb->page = NULL; |
| list_add_tail(&rxb->list, &rxq->rx_used); |
| } else { |
| list_add_tail(&rxb->list, &rxq->rx_free); |
| rxq->free_count++; |
| } |
| } else |
| list_add_tail(&rxb->list, &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) { |
| rxq->read = i; |
| il3945_rx_replenish_now(il); |
| count = 0; |
| } |
| } |
| } |
| |
| /* Backtrack one entry */ |
| rxq->read = i; |
| if (fill_rx) |
| il3945_rx_replenish_now(il); |
| else |
| il3945_rx_queue_restock(il); |
| } |
| |
| /* call this function to flush any scheduled tasklet */ |
| static inline void |
| il3945_synchronize_irq(struct il_priv *il) |
| { |
| /* wait to make sure we flush pending tasklet */ |
| synchronize_irq(il->pci_dev->irq); |
| tasklet_kill(&il->irq_tasklet); |
| } |
| |
| static const char * |
| il3945_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)) |
| |
| void |
| il3945_dump_nic_error_log(struct il_priv *il) |
| { |
| u32 i; |
| u32 desc, time, count, base, data1; |
| u32 blink1, blink2, ilink1, ilink2; |
| |
| base = le32_to_cpu(il->card_alive.error_event_table_ptr); |
| |
| if (!il3945_hw_valid_rtc_data_addr(base)) { |
| IL_ERR("Not valid error log pointer 0x%08X\n", base); |
| return; |
| } |
| |
| count = il_read_targ_mem(il, base); |
| |
| if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { |
| IL_ERR("Start IWL Error Log Dump:\n"); |
| IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count); |
| } |
| |
| IL_ERR("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 = il_read_targ_mem(il, base + i); |
| time = il_read_targ_mem(il, base + i + 1 * sizeof(u32)); |
| blink1 = il_read_targ_mem(il, base + i + 2 * sizeof(u32)); |
| blink2 = il_read_targ_mem(il, base + i + 3 * sizeof(u32)); |
| ilink1 = il_read_targ_mem(il, base + i + 4 * sizeof(u32)); |
| ilink2 = il_read_targ_mem(il, base + i + 5 * sizeof(u32)); |
| data1 = il_read_targ_mem(il, base + i + 6 * sizeof(u32)); |
| |
| IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", |
| il3945_desc_lookup(desc), desc, time, blink1, blink2, |
| ilink1, ilink2, data1); |
| } |
| } |
| |
| static void |
| il3945_irq_tasklet(unsigned long data) |
| { |
| struct il_priv *il = (struct il_priv *)data; |
| u32 inta, handled = 0; |
| u32 inta_fh; |
| unsigned long flags; |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| u32 inta_mask; |
| #endif |
| |
| spin_lock_irqsave(&il->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 = _il_rd(il, CSR_INT); |
| _il_wr(il, 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 = _il_rd(il, CSR_FH_INT_STATUS); |
| _il_wr(il, CSR_FH_INT_STATUS, inta_fh); |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| if (il_get_debug_level(il) & IL_DL_ISR) { |
| /* just for debug */ |
| inta_mask = _il_rd(il, CSR_INT_MASK); |
| D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, |
| inta_mask, inta_fh); |
| } |
| #endif |
| |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| /* 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) { |
| IL_ERR("Hardware error detected. Restarting.\n"); |
| |
| /* Tell the device to stop sending interrupts */ |
| il_disable_interrupts(il); |
| |
| il->isr_stats.hw++; |
| il_irq_handle_error(il); |
| |
| handled |= CSR_INT_BIT_HW_ERR; |
| |
| return; |
| } |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| if (il_get_debug_level(il) & (IL_DL_ISR)) { |
| /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
| if (inta & CSR_INT_BIT_SCD) { |
| D_ISR("Scheduler finished to transmit " |
| "the frame/frames.\n"); |
| il->isr_stats.sch++; |
| } |
| |
| /* Alive notification via Rx interrupt will do the real work */ |
| if (inta & CSR_INT_BIT_ALIVE) { |
| D_ISR("Alive interrupt\n"); |
| il->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) { |
| IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n", |
| inta); |
| il->isr_stats.sw++; |
| il_irq_handle_error(il); |
| handled |= CSR_INT_BIT_SW_ERR; |
| } |
| |
| /* uCode wakes up after power-down sleep */ |
| if (inta & CSR_INT_BIT_WAKEUP) { |
| D_ISR("Wakeup interrupt\n"); |
| il_rx_queue_update_write_ptr(il, &il->rxq); |
| |
| spin_lock_irqsave(&il->lock, flags); |
| il_txq_update_write_ptr(il, &il->txq[0]); |
| il_txq_update_write_ptr(il, &il->txq[1]); |
| il_txq_update_write_ptr(il, &il->txq[2]); |
| il_txq_update_write_ptr(il, &il->txq[3]); |
| il_txq_update_write_ptr(il, &il->txq[4]); |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| il->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)) { |
| il3945_rx_handle(il); |
| il->isr_stats.rx++; |
| handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
| } |
| |
| if (inta & CSR_INT_BIT_FH_TX) { |
| D_ISR("Tx interrupt\n"); |
| il->isr_stats.tx++; |
| |
| _il_wr(il, CSR_FH_INT_STATUS, (1 << 6)); |
| il_wr(il, FH39_TCSR_CREDIT(FH39_SRVC_CHNL), 0x0); |
| handled |= CSR_INT_BIT_FH_TX; |
| } |
| |
| if (inta & ~handled) { |
| IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled); |
| il->isr_stats.unhandled++; |
| } |
| |
| if (inta & ~il->inta_mask) { |
| IL_WARN("Disabled INTA bits 0x%08x were pending\n", |
| inta & ~il->inta_mask); |
| IL_WARN(" with inta_fh = 0x%08x\n", inta_fh); |
| } |
| |
| /* Re-enable all interrupts */ |
| /* only Re-enable if disabled by irq */ |
| if (test_bit(S_INT_ENABLED, &il->status)) |
| il_enable_interrupts(il); |
| |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| if (il_get_debug_level(il) & (IL_DL_ISR)) { |
| inta = _il_rd(il, CSR_INT); |
| inta_mask = _il_rd(il, CSR_INT_MASK); |
| inta_fh = _il_rd(il, CSR_FH_INT_STATUS); |
| D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " |
| "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); |
| } |
| #endif |
| } |
| |
| static int |
| il3945_get_channels_for_scan(struct il_priv *il, enum nl80211_band band, |
| u8 is_active, u8 n_probes, |
| struct il3945_scan_channel *scan_ch, |
| struct ieee80211_vif *vif) |
| { |
| struct ieee80211_channel *chan; |
| const struct ieee80211_supported_band *sband; |
| const struct il_channel_info *ch_info; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added, i; |
| |
| sband = il_get_hw_mode(il, band); |
| if (!sband) |
| return 0; |
| |
| active_dwell = il_get_active_dwell_time(il, band, n_probes); |
| passive_dwell = il_get_passive_dwell_time(il, band, vif); |
| |
| if (passive_dwell <= active_dwell) |
| passive_dwell = active_dwell + 1; |
| |
| for (i = 0, added = 0; i < il->scan_request->n_channels; i++) { |
| chan = il->scan_request->channels[i]; |
| |
| if (chan->band != band) |
| continue; |
| |
| scan_ch->channel = chan->hw_value; |
| |
| ch_info = il_get_channel_info(il, band, scan_ch->channel); |
| if (!il_is_channel_valid(ch_info)) { |
| D_SCAN("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 || il_is_channel_passive(ch_info) || |
| (chan->flags & IEEE80211_CHAN_NO_IR)) { |
| scan_ch->type = 0; /* passive */ |
| if (IL_UCODE_API(il->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 (IL_UCODE_API(il->ucode_ver) >= 2) { |
| if (n_probes) |
| scan_ch->type |= IL39_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 |= IL39_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 == NL80211_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; |
| */ |
| } |
| |
| D_SCAN("Scanning %d [%s %d]\n", scan_ch->channel, |
| (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", |
| (scan_ch->type & 1) ? active_dwell : passive_dwell); |
| |
| scan_ch++; |
| added++; |
| } |
| |
| D_SCAN("total channels to scan %d\n", added); |
| return added; |
| } |
| |
| static void |
| il3945_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates) |
| { |
| int i; |
| |
| for (i = 0; i < RATE_COUNT_LEGACY; i++) { |
| rates[i].bitrate = il3945_rates[i].ieee * 5; |
| rates[i].hw_value = i; /* Rate scaling will work on idxes */ |
| rates[i].hw_value_short = i; |
| rates[i].flags = 0; |
| if (i > IL39_LAST_OFDM_RATE || i < IL_FIRST_OFDM_RATE) { |
| /* |
| * If CCK != 1M then set short preamble rate flag. |
| */ |
| rates[i].flags |= |
| (il3945_rates[i].plcp == |
| 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; |
| } |
| } |
| } |
| |
| /****************************************************************************** |
| * |
| * uCode download functions |
| * |
| ******************************************************************************/ |
| |
| static void |
| il3945_dealloc_ucode_pci(struct il_priv *il) |
| { |
| il_free_fw_desc(il->pci_dev, &il->ucode_code); |
| il_free_fw_desc(il->pci_dev, &il->ucode_data); |
| il_free_fw_desc(il->pci_dev, &il->ucode_data_backup); |
| il_free_fw_desc(il->pci_dev, &il->ucode_init); |
| il_free_fw_desc(il->pci_dev, &il->ucode_init_data); |
| il_free_fw_desc(il->pci_dev, &il->ucode_boot); |
| } |
| |
| /** |
| * il3945_verify_inst_full - verify runtime uCode image in card vs. host, |
| * looking at all data. |
| */ |
| static int |
| il3945_verify_inst_full(struct il_priv *il, __le32 * image, u32 len) |
| { |
| u32 val; |
| u32 save_len = len; |
| int rc = 0; |
| u32 errcnt; |
| |
| D_INFO("ucode inst image size is %u\n", len); |
| |
| il_wr(il, HBUS_TARG_MEM_RADDR, IL39_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 IL_DL_IO is set */ |
| val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
| if (val != le32_to_cpu(*image)) { |
| IL_ERR("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) |
| D_INFO("ucode image in INSTRUCTION memory is good\n"); |
| |
| return rc; |
| } |
| |
| /** |
| * il3945_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 |
| il3945_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len) |
| { |
| u32 val; |
| int rc = 0; |
| u32 errcnt = 0; |
| u32 i; |
| |
| D_INFO("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 IL_DL_IO is set */ |
| il_wr(il, HBUS_TARG_MEM_RADDR, i + IL39_RTC_INST_LOWER_BOUND); |
| val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
| if (val != le32_to_cpu(*image)) { |
| #if 0 /* Enable this if you want to see details */ |
| IL_ERR("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; |
| } |
| |
| /** |
| * il3945_verify_ucode - determine which instruction image is in SRAM, |
| * and verify its contents |
| */ |
| static int |
| il3945_verify_ucode(struct il_priv *il) |
| { |
| __le32 *image; |
| u32 len; |
| int rc = 0; |
| |
| /* Try bootstrap */ |
| image = (__le32 *) il->ucode_boot.v_addr; |
| len = il->ucode_boot.len; |
| rc = il3945_verify_inst_sparse(il, image, len); |
| if (rc == 0) { |
| D_INFO("Bootstrap uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| /* Try initialize */ |
| image = (__le32 *) il->ucode_init.v_addr; |
| len = il->ucode_init.len; |
| rc = il3945_verify_inst_sparse(il, image, len); |
| if (rc == 0) { |
| D_INFO("Initialize uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| /* Try runtime/protocol */ |
| image = (__le32 *) il->ucode_code.v_addr; |
| len = il->ucode_code.len; |
| rc = il3945_verify_inst_sparse(il, image, len); |
| if (rc == 0) { |
| D_INFO("Runtime uCode is good in inst SRAM\n"); |
| return 0; |
| } |
| |
| IL_ERR("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 *) il->ucode_boot.v_addr; |
| len = il->ucode_boot.len; |
| rc = il3945_verify_inst_full(il, image, len); |
| |
| return rc; |
| } |
| |
| static void |
| il3945_nic_start(struct il_priv *il) |
| { |
| /* Remove all resets to allow NIC to operate */ |
| _il_wr(il, CSR_RESET, 0); |
| } |
| |
| #define IL3945_UCODE_GET(item) \ |
| static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\ |
| { \ |
| return le32_to_cpu(ucode->v1.item); \ |
| } |
| |
| static u32 |
| il3945_ucode_get_header_size(u32 api_ver) |
| { |
| return 24; |
| } |
| |
| static u8 * |
| il3945_ucode_get_data(const struct il_ucode_header *ucode) |
| { |
| return (u8 *) ucode->v1.data; |
| } |
| |
| IL3945_UCODE_GET(inst_size); |
| IL3945_UCODE_GET(data_size); |
| IL3945_UCODE_GET(init_size); |
| IL3945_UCODE_GET(init_data_size); |
| IL3945_UCODE_GET(boot_size); |
| |
| /** |
| * il3945_read_ucode - Read uCode images from disk file. |
| * |
| * Copy into buffers for card to fetch via bus-mastering |
| */ |
| static int |
| il3945_read_ucode(struct il_priv *il) |
| { |
| const struct il_ucode_header *ucode; |
| int ret = -EINVAL, idx; |
| const struct firmware *ucode_raw; |
| /* firmware file name contains uCode/driver compatibility version */ |
| const char *name_pre = il->cfg->fw_name_pre; |
| const unsigned int api_max = il->cfg->ucode_api_max; |
| const unsigned int api_min = il->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 (idx = api_max; idx >= api_min; idx--) { |
| sprintf(buf, "%s%u%s", name_pre, idx, ".ucode"); |
| ret = request_firmware(&ucode_raw, buf, &il->pci_dev->dev); |
| if (ret < 0) { |
| IL_ERR("%s firmware file req failed: %d\n", buf, ret); |
| if (ret == -ENOENT) |
| continue; |
| else |
| goto error; |
| } else { |
| if (idx < api_max) |
| IL_ERR("Loaded firmware %s, " |
| "which is deprecated. " |
| " Please use API v%u instead.\n", buf, |
| api_max); |
| D_INFO("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 < il3945_ucode_get_header_size(1)) { |
| IL_ERR("File size way too small!\n"); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Data from ucode file: header followed by uCode images */ |
| ucode = (struct il_ucode_header *)ucode_raw->data; |
| |
| il->ucode_ver = le32_to_cpu(ucode->ver); |
| api_ver = IL_UCODE_API(il->ucode_ver); |
| inst_size = il3945_ucode_get_inst_size(ucode); |
| data_size = il3945_ucode_get_data_size(ucode); |
| init_size = il3945_ucode_get_init_size(ucode); |
| init_data_size = il3945_ucode_get_init_data_size(ucode); |
| boot_size = il3945_ucode_get_boot_size(ucode); |
| src = il3945_ucode_get_data(ucode); |
| |
| /* 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) { |
| IL_ERR("Driver unable to support your firmware API. " |
| "Driver supports v%u, firmware is v%u.\n", api_max, |
| api_ver); |
| il->ucode_ver = 0; |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (api_ver != api_max) |
| IL_ERR("Firmware has old API version. Expected %u, " |
| "got %u. New firmware can be obtained " |
| "from http://www.intellinuxwireless.org.\n", api_max, |
| api_ver); |
| |
| IL_INFO("loaded firmware version %u.%u.%u.%u\n", |
| IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver), |
| IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver)); |
| |
| snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version), |
| "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver), |
| IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver), |
| IL_UCODE_SERIAL(il->ucode_ver)); |
| |
| D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver); |
| D_INFO("f/w package hdr runtime inst size = %u\n", inst_size); |
| D_INFO("f/w package hdr runtime data size = %u\n", data_size); |
| D_INFO("f/w package hdr init inst size = %u\n", init_size); |
| D_INFO("f/w package hdr init data size = %u\n", init_data_size); |
| D_INFO("f/w package hdr boot inst size = %u\n", boot_size); |
| |
| /* Verify size of file vs. image size info in file's header */ |
| if (ucode_raw->size != |
| il3945_ucode_get_header_size(api_ver) + inst_size + data_size + |
| init_size + init_data_size + boot_size) { |
| |
| D_INFO("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 > IL39_MAX_INST_SIZE) { |
| D_INFO("uCode instr len %d too large to fit in\n", inst_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| if (data_size > IL39_MAX_DATA_SIZE) { |
| D_INFO("uCode data len %d too large to fit in\n", data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_size > IL39_MAX_INST_SIZE) { |
| D_INFO("uCode init instr len %d too large to fit in\n", |
| init_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (init_data_size > IL39_MAX_DATA_SIZE) { |
| D_INFO("uCode init data len %d too large to fit in\n", |
| init_data_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| if (boot_size > IL39_MAX_BSM_SIZE) { |
| D_INFO("uCode boot instr len %d too large to fit in\n", |
| boot_size); |
| ret = -EINVAL; |
| goto err_release; |
| } |
| |
| /* Allocate ucode buffers for card's bus-master loading ... */ |
| |
| /* Runtime instructions and 2 copies of data: |
| * 1) unmodified from disk |
| * 2) backup cache for save/restore during power-downs */ |
| il->ucode_code.len = inst_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_code); |
| |
| il->ucode_data.len = data_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_data); |
| |
| il->ucode_data_backup.len = data_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup); |
| |
| if (!il->ucode_code.v_addr || !il->ucode_data.v_addr || |
| !il->ucode_data_backup.v_addr) |
| goto err_pci_alloc; |
| |
| /* Initialization instructions and data */ |
| if (init_size && init_data_size) { |
| il->ucode_init.len = init_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_init); |
| |
| il->ucode_init_data.len = init_data_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data); |
| |
| if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr) |
| goto err_pci_alloc; |
| } |
| |
| /* Bootstrap (instructions only, no data) */ |
| if (boot_size) { |
| il->ucode_boot.len = boot_size; |
| il_alloc_fw_desc(il->pci_dev, &il->ucode_boot); |
| |
| if (!il->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; |
| D_INFO("Copying (but not loading) uCode instr len %zd\n", len); |
| memcpy(il->ucode_code.v_addr, src, len); |
| src += len; |
| |
| D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", |
| il->ucode_code.v_addr, (u32) il->ucode_code.p_addr); |
| |
| /* Runtime data (2nd block) |
| * NOTE: Copy into backup buffer will be done in il3945_up() */ |
| len = data_size; |
| D_INFO("Copying (but not loading) uCode data len %zd\n", len); |
| memcpy(il->ucode_data.v_addr, src, len); |
| memcpy(il->ucode_data_backup.v_addr, src, len); |
| src += len; |
| |
| /* Initialization instructions (3rd block) */ |
| if (init_size) { |
| len = init_size; |
| D_INFO("Copying (but not loading) init instr len %zd\n", len); |
| memcpy(il->ucode_init.v_addr, src, len); |
| src += len; |
| } |
| |
| /* Initialization data (4th block) */ |
| if (init_data_size) { |
| len = init_data_size; |
| D_INFO("Copying (but not loading) init data len %zd\n", len); |
| memcpy(il->ucode_init_data.v_addr, src, len); |
| src += len; |
| } |
| |
| /* Bootstrap instructions (5th block) */ |
| len = boot_size; |
| D_INFO("Copying (but not loading) boot instr len %zd\n", len); |
| memcpy(il->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: |
| IL_ERR("failed to allocate pci memory\n"); |
| ret = -ENOMEM; |
| il3945_dealloc_ucode_pci(il); |
| |
| err_release: |
| release_firmware(ucode_raw); |
| |
| error: |
| return ret; |
| } |
| |
| /** |
| * il3945_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 |
| il3945_set_ucode_ptrs(struct il_priv *il) |
| { |
| dma_addr_t pinst; |
| dma_addr_t pdata; |
| |
| /* bits 31:0 for 3945 */ |
| pinst = il->ucode_code.p_addr; |
| pdata = il->ucode_data_backup.p_addr; |
| |
| /* Tell bootstrap uCode where to find image to load */ |
| il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); |
| il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); |
| il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->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 */ |
| il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, |
| il->ucode_code.len | BSM_DRAM_INST_LOAD); |
| |
| D_INFO("Runtime uCode pointers are set.\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * il3945_init_alive_start - Called after N_ALIVE notification received |
| * |
| * Called after N_ALIVE notification received from "initialize" uCode. |
| * |
| * Tell "initialize" uCode to go ahead and load the runtime uCode. |
| */ |
| static void |
| il3945_init_alive_start(struct il_priv *il) |
| { |
| /* Check alive response for "valid" sign from uCode */ |
| if (il->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 */ |
| D_INFO("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 (il3945_verify_ucode(il)) { |
| /* Runtime instruction load was bad; |
| * take it all the way back down so we can try again */ |
| D_INFO("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. */ |
| D_INFO("Initialization Alive received.\n"); |
| if (il3945_set_ucode_ptrs(il)) { |
| /* Runtime instruction load won't happen; |
| * take it all the way back down so we can try again */ |
| D_INFO("Couldn't set up uCode pointers.\n"); |
| goto restart; |
| } |
| return; |
| |
| restart: |
| queue_work(il->workqueue, &il->restart); |
| } |
| |
| /** |
| * il3945_alive_start - called after N_ALIVE notification received |
| * from protocol/runtime uCode (initialization uCode's |
| * Alive gets handled by il3945_init_alive_start()). |
| */ |
| static void |
| il3945_alive_start(struct il_priv *il) |
| { |
| int thermal_spin = 0; |
| u32 rfkill; |
| |
| D_INFO("Runtime Alive received.\n"); |
| |
| if (il->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 */ |
| D_INFO("Alive failed.\n"); |
| goto restart; |
| } |
| |
| /* Initialize uCode has loaded Runtime uCode ... verify inst image. |
| * This is a paranoid check, because we would not have gotten the |
| * "runtime" alive if code weren't properly loaded. */ |
| if (il3945_verify_ucode(il)) { |
| /* Runtime instruction load was bad; |
| * take it all the way back down so we can try again */ |
| D_INFO("Bad runtime uCode load.\n"); |
| goto restart; |
| } |
| |
| rfkill = il_rd_prph(il, APMG_RFKILL_REG); |
| D_INFO("RFKILL status: 0x%x\n", rfkill); |
| |
| if (rfkill & 0x1) { |
| clear_bit(S_RFKILL, &il->status); |
| /* if RFKILL is not on, then wait for thermal |
| * sensor in adapter to kick in */ |
| while (il3945_hw_get_temperature(il) == 0) { |
| thermal_spin++; |
| udelay(10); |
| } |
| |
| if (thermal_spin) |
| D_INFO("Thermal calibration took %dus\n", |
| thermal_spin * 10); |
| } else |
| set_bit(S_RFKILL, &il->status); |
| |
| /* After the ALIVE response, we can send commands to 3945 uCode */ |
| set_bit(S_ALIVE, &il->status); |
| |
| /* Enable watchdog to monitor the driver tx queues */ |
| il_setup_watchdog(il); |
| |
| if (il_is_rfkill(il)) |
| return; |
| |
| ieee80211_wake_queues(il->hw); |
| |
| il->active_rate = RATES_MASK_3945; |
| |
| il_power_update_mode(il, true); |
| |
| if (il_is_associated(il)) { |
| struct il3945_rxon_cmd *active_rxon = |
| (struct il3945_rxon_cmd *)(&il->active); |
| |
| il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| } else { |
| /* Initialize our rx_config data */ |
| il_connection_init_rx_config(il); |
| } |
| |
| /* Configure Bluetooth device coexistence support */ |
| il_send_bt_config(il); |
| |
| set_bit(S_READY, &il->status); |
| |
| /* Configure the adapter for unassociated operation */ |
| il3945_commit_rxon(il); |
| |
| il3945_reg_txpower_periodic(il); |
| |
| D_INFO("ALIVE processing complete.\n"); |
| wake_up(&il->wait_command_queue); |
| |
| return; |
| |
| restart: |
| queue_work(il->workqueue, &il->restart); |
| } |
| |
| static void il3945_cancel_deferred_work(struct il_priv *il); |
| |
| static void |
| __il3945_down(struct il_priv *il) |
| { |
| unsigned long flags; |
| int exit_pending; |
| |
| D_INFO(DRV_NAME " is going down\n"); |
| |
| il_scan_cancel_timeout(il, 200); |
| |
| exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status); |
| |
| /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set |
| * to prevent rearm timer */ |
| del_timer_sync(&il->watchdog); |
| |
| /* Station information will now be cleared in device */ |
| il_clear_ucode_stations(il); |
| il_dealloc_bcast_stations(il); |
| il_clear_driver_stations(il); |
| |
| /* Unblock any waiting calls */ |
| wake_up_all(&il->wait_command_queue); |
| |
| /* Wipe out the EXIT_PENDING status bit if we are not actually |
| * exiting the module */ |
| if (!exit_pending) |
| clear_bit(S_EXIT_PENDING, &il->status); |
| |
| /* stop and reset the on-board processor */ |
| _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
| |
| /* tell the device to stop sending interrupts */ |
| spin_lock_irqsave(&il->lock, flags); |
| il_disable_interrupts(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| il3945_synchronize_irq(il); |
| |
| if (il->mac80211_registered) |
| ieee80211_stop_queues(il->hw); |
| |
| /* If we have not previously called il3945_init() then |
| * clear all bits but the RF Kill bits and return */ |
| if (!il_is_init(il)) { |
| il->status = |
| test_bit(S_RFKILL, &il->status) << S_RFKILL | |
| test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
| test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
| goto exit; |
| } |
| |
| /* ...otherwise clear out all the status bits but the RF Kill |
| * bit and continue taking the NIC down. */ |
| il->status &= |
| test_bit(S_RFKILL, &il->status) << S_RFKILL | |
| test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
| test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | |
| test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
| |
| /* |
| * We disabled and synchronized interrupt, and priv->mutex is taken, so |
| * here is the only thread which will program device registers, but |
| * still have lockdep assertions, so we are taking reg_lock. |
| */ |
| spin_lock_irq(&il->reg_lock); |
| /* FIXME: il_grab_nic_access if rfkill is off ? */ |
| |
| il3945_hw_txq_ctx_stop(il); |
| il3945_hw_rxq_stop(il); |
| /* Power-down device's busmaster DMA clocks */ |
| _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
| udelay(5); |
| /* Stop the device, and put it in low power state */ |
| _il_apm_stop(il); |
| |
| spin_unlock_irq(&il->reg_lock); |
| |
| il3945_hw_txq_ctx_free(il); |
| exit: |
| memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); |
| dev_kfree_skb(il->beacon_skb); |
| il->beacon_skb = NULL; |
| |
| /* clear out any free frames */ |
| il3945_clear_free_frames(il); |
| } |
| |
| static void |
| il3945_down(struct il_priv *il) |
| { |
| mutex_lock(&il->mutex); |
| __il3945_down(il); |
| mutex_unlock(&il->mutex); |
| |
| il3945_cancel_deferred_work(il); |
| } |
| |
| #define MAX_HW_RESTARTS 5 |
| |
| static int |
| il3945_alloc_bcast_station(struct il_priv *il) |
| { |
| unsigned long flags; |
| u8 sta_id; |
| |
| spin_lock_irqsave(&il->sta_lock, flags); |
| sta_id = il_prep_station(il, il_bcast_addr, false, NULL); |
| if (sta_id == IL_INVALID_STATION) { |
| IL_ERR("Unable to prepare broadcast station\n"); |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| return -EINVAL; |
| } |
| |
| il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE; |
| il->stations[sta_id].used |= IL_STA_BCAST; |
| spin_unlock_irqrestore(&il->sta_lock, flags); |
| |
| return 0; |
| } |
| |
| static int |
| __il3945_up(struct il_priv *il) |
| { |
| int rc, i; |
| |
| rc = il3945_alloc_bcast_station(il); |
| if (rc) |
| return rc; |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) { |
| IL_WARN("Exit pending; will not bring the NIC up\n"); |
| return -EIO; |
| } |
| |
| if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) { |
| IL_ERR("ucode not available for device bring up\n"); |
| return -EIO; |
| } |
| |
| /* If platform's RF_KILL switch is NOT set to KILL */ |
| if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
| clear_bit(S_RFKILL, &il->status); |
| else { |
| set_bit(S_RFKILL, &il->status); |
| return -ERFKILL; |
| } |
| |
| _il_wr(il, CSR_INT, 0xFFFFFFFF); |
| |
| rc = il3945_hw_nic_init(il); |
| if (rc) { |
| IL_ERR("Unable to int nic\n"); |
| return rc; |
| } |
| |
| /* make sure rfkill handshake bits are cleared */ |
| _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| |
| /* clear (again), then enable host interrupts */ |
| _il_wr(il, CSR_INT, 0xFFFFFFFF); |
| il_enable_interrupts(il); |
| |
| /* really make sure rfkill handshake bits are cleared */ |
| _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| _il_wr(il, 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(il->ucode_data_backup.v_addr, il->ucode_data.v_addr, |
| il->ucode_data.len); |
| |
| /* We return success when we resume from suspend and rf_kill is on. */ |
| if (test_bit(S_RFKILL, &il->status)) |
| return 0; |
| |
| for (i = 0; i < MAX_HW_RESTARTS; i++) { |
| |
| /* load bootstrap state machine, |
| * load bootstrap program into processor's memory, |
| * prepare to load the "initialize" uCode */ |
| rc = il->ops->load_ucode(il); |
| |
| if (rc) { |
| IL_ERR("Unable to set up bootstrap uCode: %d\n", rc); |
| continue; |
| } |
| |
| /* start card; "initialize" will load runtime ucode */ |
| il3945_nic_start(il); |
| |
| D_INFO(DRV_NAME " is coming up\n"); |
| |
| return 0; |
| } |
| |
| set_bit(S_EXIT_PENDING, &il->status); |
| __il3945_down(il); |
| clear_bit(S_EXIT_PENDING, &il->status); |
| |
| /* tried to restart and config the device for as long as our |
| * patience could withstand */ |
| IL_ERR("Unable to initialize device after %d attempts.\n", i); |
| return -EIO; |
| } |
| |
| /***************************************************************************** |
| * |
| * Workqueue callbacks |
| * |
| *****************************************************************************/ |
| |
| static void |
| il3945_bg_init_alive_start(struct work_struct *data) |
| { |
| struct il_priv *il = |
| container_of(data, struct il_priv, init_alive_start.work); |
| |
| mutex_lock(&il->mutex); |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| goto out; |
| |
| il3945_init_alive_start(il); |
| out: |
| mutex_unlock(&il->mutex); |
| } |
| |
| static void |
| il3945_bg_alive_start(struct work_struct *data) |
| { |
| struct il_priv *il = |
| container_of(data, struct il_priv, alive_start.work); |
| |
| mutex_lock(&il->mutex); |
| if (test_bit(S_EXIT_PENDING, &il->status) || il->txq == NULL) |
| goto out; |
| |
| il3945_alive_start(il); |
| out: |
| mutex_unlock(&il->mutex); |
| } |
| |
| /* |
| * 3945 cannot interrupt driver when hardware rf kill switch toggles; |
| * driver must poll CSR_GP_CNTRL_REG register for change. This register |
| * *is* readable even when device has been SW_RESET into low power mode |
| * (e.g. during RF KILL). |
| */ |
| static void |
| il3945_rfkill_poll(struct work_struct *data) |
| { |
| struct il_priv *il = |
| container_of(data, struct il_priv, _3945.rfkill_poll.work); |
| bool old_rfkill = test_bit(S_RFKILL, &il->status); |
| bool new_rfkill = |
| !(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); |
| |
| if (new_rfkill != old_rfkill) { |
| if (new_rfkill) |
| set_bit(S_RFKILL, &il->status); |
| else |
| clear_bit(S_RFKILL, &il->status); |
| |
| wiphy_rfkill_set_hw_state(il->hw->wiphy, new_rfkill); |
| |
| D_RF_KILL("RF_KILL bit toggled to %s.\n", |
| new_rfkill ? "disable radio" : "enable radio"); |
| } |
| |
| /* Keep this running, even if radio now enabled. This will be |
| * cancelled in mac_start() if system decides to start again */ |
| queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
| round_jiffies_relative(2 * HZ)); |
| |
| } |
| |
| int |
| il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif) |
| { |
| struct il_host_cmd cmd = { |
| .id = C_SCAN, |
| .len = sizeof(struct il3945_scan_cmd), |
| .flags = CMD_SIZE_HUGE, |
| }; |
| struct il3945_scan_cmd *scan; |
| u8 n_probes = 0; |
| enum nl80211_band band; |
| bool is_active = false; |
| int ret; |
| u16 len; |
| |
| lockdep_assert_held(&il->mutex); |
| |
| if (!il->scan_cmd) { |
| il->scan_cmd = |
| kmalloc(sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE, |
| GFP_KERNEL); |
| if (!il->scan_cmd) { |
| D_SCAN("Fail to allocate scan memory\n"); |
| return -ENOMEM; |
| } |
| } |
| scan = il->scan_cmd; |
| memset(scan, 0, sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE); |
| |
| scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH; |
| scan->quiet_time = IL_ACTIVE_QUIET_TIME; |
| |
| if (il_is_associated(il)) { |
| u16 interval; |
| u32 extra; |
| u32 suspend_time = 100; |
| u32 scan_suspend_time = 100; |
| |
| D_INFO("Scanning while associated...\n"); |
| |
| interval = vif->bss_conf.beacon_int; |
| |
| 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); |
| D_SCAN("suspend_time 0x%X beacon interval %d\n", |
| scan_suspend_time, interval); |
| } |
| |
| if (il->scan_request->n_ssids) { |
| int i, p = 0; |
| D_SCAN("Kicking off active scan\n"); |
| for (i = 0; i < il->scan_request->n_ssids; i++) { |
| /* always does wildcard anyway */ |
| if (!il->scan_request->ssids[i].ssid_len) |
| continue; |
| scan->direct_scan[p].id = WLAN_EID_SSID; |
| scan->direct_scan[p].len = |
| il->scan_request->ssids[i].ssid_len; |
| memcpy(scan->direct_scan[p].ssid, |
| il->scan_request->ssids[i].ssid, |
| il->scan_request->ssids[i].ssid_len); |
| n_probes++; |
| p++; |
| } |
| is_active = true; |
| } else |
| D_SCAN("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 = il->hw_params.bcast_id; |
| scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| |
| /* flags + rate selection */ |
| |
| switch (il->scan_band) { |
| case NL80211_BAND_2GHZ: |
| scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
| scan->tx_cmd.rate = RATE_1M_PLCP; |
| band = NL80211_BAND_2GHZ; |
| break; |
| case NL80211_BAND_5GHZ: |
| scan->tx_cmd.rate = RATE_6M_PLCP; |
| band = NL80211_BAND_5GHZ; |
| break; |
| default: |
| IL_WARN("Invalid scan band\n"); |
| return -EIO; |
| } |
| |
| /* |
| * If active scaning is requested but a certain channel is marked |
| * passive, we can do active scanning if we detect transmissions. For |
| * passive only scanning disable switching to active on any channel. |
| */ |
| scan->good_CRC_th = |
| is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER; |
| |
| len = |
| il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data, |
| vif->addr, il->scan_request->ie, |
| il->scan_request->ie_len, |
| IL_MAX_SCAN_SIZE - sizeof(*scan)); |
| scan->tx_cmd.len = cpu_to_le16(len); |
| |
| /* select Rx antennas */ |
| scan->flags |= il3945_get_antenna_flags(il); |
| |
| scan->channel_count = |
| il3945_get_channels_for_scan(il, band, is_active, n_probes, |
| (void *)&scan->data[len], vif); |
| if (scan->channel_count == 0) { |
| D_SCAN("channel count %d\n", scan->channel_count); |
| return -EIO; |
| } |
| |
| cmd.len += |
| le16_to_cpu(scan->tx_cmd.len) + |
| scan->channel_count * sizeof(struct il3945_scan_channel); |
| cmd.data = scan; |
| scan->len = cpu_to_le16(cmd.len); |
| |
| set_bit(S_SCAN_HW, &il->status); |
| ret = il_send_cmd_sync(il, &cmd); |
| if (ret) |
| clear_bit(S_SCAN_HW, &il->status); |
| return ret; |
| } |
| |
| void |
| il3945_post_scan(struct il_priv *il) |
| { |
| /* |
| * Since setting the RXON may have been deferred while |
| * performing the scan, fire one off if needed |
| */ |
| if (memcmp(&il->staging, &il->active, sizeof(il->staging))) |
| il3945_commit_rxon(il); |
| } |
| |
| static void |
| il3945_bg_restart(struct work_struct *data) |
| { |
| struct il_priv *il = container_of(data, struct il_priv, restart); |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| if (test_and_clear_bit(S_FW_ERROR, &il->status)) { |
| mutex_lock(&il->mutex); |
| il->is_open = 0; |
| mutex_unlock(&il->mutex); |
| il3945_down(il); |
| ieee80211_restart_hw(il->hw); |
| } else { |
| il3945_down(il); |
| |
| mutex_lock(&il->mutex); |
| if (test_bit(S_EXIT_PENDING, &il->status)) { |
| mutex_unlock(&il->mutex); |
| return; |
| } |
| |
| __il3945_up(il); |
| mutex_unlock(&il->mutex); |
| } |
| } |
| |
| static void |
| il3945_bg_rx_replenish(struct work_struct *data) |
| { |
| struct il_priv *il = container_of(data, struct il_priv, rx_replenish); |
| |
| mutex_lock(&il->mutex); |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| goto out; |
| |
| il3945_rx_replenish(il); |
| out: |
| mutex_unlock(&il->mutex); |
| } |
| |
| void |
| il3945_post_associate(struct il_priv *il) |
| { |
| int rc = 0; |
| |
| if (!il->vif || !il->is_open) |
| return; |
| |
| D_ASSOC("Associated as %d to: %pM\n", il->vif->bss_conf.aid, |
| il->active.bssid_addr); |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| il_scan_cancel_timeout(il, 200); |
| |
| il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| il3945_commit_rxon(il); |
| |
| rc = il_send_rxon_timing(il); |
| if (rc) |
| IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n"); |
| |
| il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| |
| il->staging.assoc_id = cpu_to_le16(il->vif->bss_conf.aid); |
| |
| D_ASSOC("assoc id %d beacon interval %d\n", il->vif->bss_conf.aid, |
| il->vif->bss_conf.beacon_int); |
| |
| if (il->vif->bss_conf.use_short_preamble) |
| il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| |
| if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
| if (il->vif->bss_conf.use_short_slot) |
| il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| } |
| |
| il3945_commit_rxon(il); |
| |
| switch (il->vif->type) { |
| case NL80211_IFTYPE_STATION: |
| il3945_rate_scale_init(il->hw, IL_AP_ID); |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| il3945_send_beacon_cmd(il); |
| break; |
| default: |
| IL_ERR("%s Should not be called in %d mode\n", __func__, |
| il->vif->type); |
| break; |
| } |
| } |
| |
| /***************************************************************************** |
| * |
| * mac80211 entry point functions |
| * |
| *****************************************************************************/ |
| |
| #define UCODE_READY_TIMEOUT (2 * HZ) |
| |
| static int |
| il3945_mac_start(struct ieee80211_hw *hw) |
| { |
| struct il_priv *il = hw->priv; |
| int ret; |
| |
| /* we should be verifying the device is ready to be opened */ |
| mutex_lock(&il->mutex); |
| D_MAC80211("enter\n"); |
| |
| /* fetch ucode file from disk, alloc and copy to bus-master buffers ... |
| * ucode filename and max sizes are card-specific. */ |
| |
| if (!il->ucode_code.len) { |
| ret = il3945_read_ucode(il); |
| if (ret) { |
| IL_ERR("Could not read microcode: %d\n", ret); |
| mutex_unlock(&il->mutex); |
| goto out_release_irq; |
| } |
| } |
| |
| ret = __il3945_up(il); |
| |
| mutex_unlock(&il->mutex); |
| |
| if (ret) |
| goto out_release_irq; |
| |
| D_INFO("Start UP work.\n"); |
| |
| /* Wait for START_ALIVE from ucode. Otherwise callbacks from |
| * mac80211 will not be run successfully. */ |
| ret = wait_event_timeout(il->wait_command_queue, |
| test_bit(S_READY, &il->status), |
| UCODE_READY_TIMEOUT); |
| if (!ret) { |
| if (!test_bit(S_READY, &il->status)) { |
| IL_ERR("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(&il->_3945.rfkill_poll); |
| |
| il->is_open = 1; |
| D_MAC80211("leave\n"); |
| return 0; |
| |
| out_release_irq: |
| il->is_open = 0; |
| D_MAC80211("leave - failed\n"); |
| return ret; |
| } |
| |
| static void |
| il3945_mac_stop(struct ieee80211_hw *hw) |
| { |
| struct il_priv *il = hw->priv; |
| |
| D_MAC80211("enter\n"); |
| |
| if (!il->is_open) { |
| D_MAC80211("leave - skip\n"); |
| return; |
| } |
| |
| il->is_open = 0; |
| |
| il3945_down(il); |
| |
| flush_workqueue(il->workqueue); |
| |
| /* start polling the killswitch state again */ |
| queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
| round_jiffies_relative(2 * HZ)); |
| |
| D_MAC80211("leave\n"); |
| } |
| |
| static void |
| il3945_mac_tx(struct ieee80211_hw *hw, |
| struct ieee80211_tx_control *control, |
| struct sk_buff *skb) |
| { |
| struct il_priv *il = hw->priv; |
| |
| D_MAC80211("enter\n"); |
| |
| D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
| ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); |
| |
| if (il3945_tx_skb(il, control->sta, skb)) |
| dev_kfree_skb_any(skb); |
| |
| D_MAC80211("leave\n"); |
| } |
| |
| void |
| il3945_config_ap(struct il_priv *il) |
| { |
| struct ieee80211_vif *vif = il->vif; |
| int rc = 0; |
| |
| if (test_bit(S_EXIT_PENDING, &il->status)) |
| return; |
| |
| /* The following should be done only at AP bring up */ |
| if (!(il_is_associated(il))) { |
| |
| /* RXON - unassoc (to set timing command) */ |
| il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| il3945_commit_rxon(il); |
| |
| /* RXON Timing */ |
| rc = il_send_rxon_timing(il); |
| if (rc) |
| IL_WARN("C_RXON_TIMING failed - " |
| "Attempting to continue.\n"); |
| |
| il->staging.assoc_id = 0; |
| |
| if (vif->bss_conf.use_short_preamble) |
| il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| |
| if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
| if (vif->bss_conf.use_short_slot) |
| il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
| else |
| il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
| } |
| /* restore RXON assoc */ |
| il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
| il3945_commit_rxon(il); |
| } |
| il3945_send_beacon_cmd(il); |
| } |
| |
| static int |
| il3945_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 il_priv *il = hw->priv; |
| int ret = 0; |
| u8 sta_id = IL_INVALID_STATION; |
| u8 static_key; |
| |
| D_MAC80211("enter\n"); |
| |
| if (il3945_mod_params.sw_crypto) { |
| D_MAC80211("leave - hwcrypto disabled\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| /* |
| * To support IBSS RSN, don't program group keys in IBSS, the |
| * hardware will then not attempt to decrypt the frames. |
| */ |
| if (vif->type == NL80211_IFTYPE_ADHOC && |
| !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
| D_MAC80211("leave - IBSS RSN\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| static_key = !il_is_associated(il); |
| |
| if (!static_key) { |
| sta_id = il_sta_id_or_broadcast(il, sta); |
| if (sta_id == IL_INVALID_STATION) { |
| D_MAC80211("leave - station not found\n"); |
| return -EINVAL; |
| } |
| } |
| |
| mutex_lock(&il->mutex); |
| il_scan_cancel_timeout(il, 100); |
| |
| switch (cmd) { |
| case SET_KEY: |
| if (static_key) |
| ret = il3945_set_static_key(il, key); |
| else |
| ret = il3945_set_dynamic_key(il, key, sta_id); |
| D_MAC80211("enable hwcrypto key\n"); |
| break; |
| case DISABLE_KEY: |
| if (static_key) |
| ret = il3945_remove_static_key(il); |
| else |
| ret = il3945_clear_sta_key_info(il, sta_id); |
| D_MAC80211("disable hwcrypto key\n"); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| D_MAC80211("leave ret %d\n", ret); |
| mutex_unlock(&il->mutex); |
| |
| return ret; |
| } |
| |
| static int |
| il3945_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct il_priv *il = hw->priv; |
| struct il3945_sta_priv *sta_priv = (void *)sta->drv_priv; |
| int ret; |
| bool is_ap = vif->type == NL80211_IFTYPE_STATION; |
| u8 sta_id; |
| |
| mutex_lock(&il->mutex); |
| D_INFO("station %pM\n", sta->addr); |
| sta_priv->common.sta_id = IL_INVALID_STATION; |
| |
| ret = il_add_station_common(il, sta->addr, is_ap, sta, &sta_id); |
| if (ret) { |
| IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret); |
| /* Should we return success if return code is EEXIST ? */ |
| mutex_unlock(&il->mutex); |
| return ret; |
| } |
| |
| sta_priv->common.sta_id = sta_id; |
| |
| /* Initialize rate scaling */ |
| D_INFO("Initializing rate scaling for station %pM\n", sta->addr); |
| il3945_rs_rate_init(il, sta, sta_id); |
| mutex_unlock(&il->mutex); |
| |
| return 0; |
| } |
| |
| static void |
| il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, |
| unsigned int *total_flags, u64 multicast) |
| { |
| struct il_priv *il = hw->priv; |
| __le32 filter_or = 0, filter_nand = 0; |
| |
| #define CHK(test, flag) do { \ |
| if (*total_flags & (test)) \ |
| filter_or |= (flag); \ |
| else \ |
| filter_nand |= (flag); \ |
| } while (0) |
| |
| D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags, |
| *total_flags); |
| |
| CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK); |
| CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK); |
| CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); |
| |
| #undef CHK |
| |
| mutex_lock(&il->mutex); |
| |
| il->staging.filter_flags &= ~filter_nand; |
| il->staging.filter_flags |= filter_or; |
| |
| /* |
| * Not committing directly because hardware can perform a scan, |
| * but even if hw is ready, committing here breaks for some reason, |
| * we'll eventually commit the filter flags change anyway. |
| */ |
| |
| mutex_unlock(&il->mutex); |
| |
| /* |
| * Receiving all multicast frames is always enabled by the |
| * default flags setup in il_connection_init_rx_config() |
| * since we currently do not support programming multicast |
| * filters into the device. |
| */ |
| *total_flags &= |
| FIF_OTHER_BSS | FIF_ALLMULTI | |
| FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; |
| } |
| |
| /***************************************************************************** |
| * |
| * sysfs attributes |
| * |
| *****************************************************************************/ |
| |
| #ifdef CONFIG_IWLEGACY_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 |
| il3945_show_debug_level(struct device *d, struct device_attribute *attr, |
| char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| return sprintf(buf, "0x%08X\n", il_get_debug_level(il)); |
| } |
| |
| static ssize_t |
| il3945_store_debug_level(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| unsigned long val; |
| int ret; |
| |
| ret = kstrtoul(buf, 0, &val); |
| if (ret) |
| IL_INFO("%s is not in hex or decimal form.\n", buf); |
| else |
| il->debug_level = val; |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(debug_level, 0644, il3945_show_debug_level, |
| il3945_store_debug_level); |
| |
| #endif /* CONFIG_IWLEGACY_DEBUG */ |
| |
| static ssize_t |
| il3945_show_temperature(struct device *d, struct device_attribute *attr, |
| char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| |
| if (!il_is_alive(il)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", il3945_hw_get_temperature(il)); |
| } |
| |
| static DEVICE_ATTR(temperature, 0444, il3945_show_temperature, NULL); |
| |
| static ssize_t |
| il3945_show_tx_power(struct device *d, struct device_attribute *attr, char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| return sprintf(buf, "%d\n", il->tx_power_user_lmt); |
| } |
| |
| static ssize_t |
| il3945_store_tx_power(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| char *p = (char *)buf; |
| u32 val; |
| |
| val = simple_strtoul(p, &p, 10); |
| if (p == buf) |
| IL_INFO(": %s is not in decimal form.\n", buf); |
| else |
| il3945_hw_reg_set_txpower(il, val); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(tx_power, 0644, il3945_show_tx_power, il3945_store_tx_power); |
| |
| static ssize_t |
| il3945_show_flags(struct device *d, struct device_attribute *attr, char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| |
| return sprintf(buf, "0x%04X\n", il->active.flags); |
| } |
| |
| static ssize_t |
| il3945_store_flags(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| u32 flags = simple_strtoul(buf, NULL, 0); |
| |
| mutex_lock(&il->mutex); |
| if (le32_to_cpu(il->staging.flags) != flags) { |
| /* Cancel any currently running scans... */ |
| if (il_scan_cancel_timeout(il, 100)) |
| IL_WARN("Could not cancel scan.\n"); |
| else { |
| D_INFO("Committing rxon.flags = 0x%04X\n", flags); |
| il->staging.flags = cpu_to_le32(flags); |
| il3945_commit_rxon(il); |
| } |
| } |
| mutex_unlock(&il->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(flags, 0644, il3945_show_flags, il3945_store_flags); |
| |
| static ssize_t |
| il3945_show_filter_flags(struct device *d, struct device_attribute *attr, |
| char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| |
| return sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags)); |
| } |
| |
| static ssize_t |
| il3945_store_filter_flags(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| u32 filter_flags = simple_strtoul(buf, NULL, 0); |
| |
| mutex_lock(&il->mutex); |
| if (le32_to_cpu(il->staging.filter_flags) != filter_flags) { |
| /* Cancel any currently running scans... */ |
| if (il_scan_cancel_timeout(il, 100)) |
| IL_WARN("Could not cancel scan.\n"); |
| else { |
| D_INFO("Committing rxon.filter_flags = " "0x%04X\n", |
| filter_flags); |
| il->staging.filter_flags = cpu_to_le32(filter_flags); |
| il3945_commit_rxon(il); |
| } |
| } |
| mutex_unlock(&il->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(filter_flags, 0644, il3945_show_filter_flags, |
| il3945_store_filter_flags); |
| |
| static ssize_t |
| il3945_show_measurement(struct device *d, struct device_attribute *attr, |
| char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| struct il_spectrum_notification measure_report; |
| u32 size = sizeof(measure_report), len = 0, ofs = 0; |
| u8 *data = (u8 *) &measure_report; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&il->lock, flags); |
| if (!(il->measurement_status & MEASUREMENT_READY)) { |
| spin_unlock_irqrestore(&il->lock, flags); |
| return 0; |
| } |
| memcpy(&measure_report, &il->measure_report, size); |
| il->measurement_status = 0; |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| while (size && PAGE_SIZE - len) { |
| hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
| PAGE_SIZE - len, true); |
| len = strlen(buf); |
| if (PAGE_SIZE - len) |
| buf[len++] = '\n'; |
| |
| ofs += 16; |
| size -= min(size, 16U); |
| } |
| |
| return len; |
| } |
| |
| static ssize_t |
| il3945_store_measurement(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| struct ieee80211_measurement_params params = { |
| .channel = le16_to_cpu(il->active.channel), |
| .start_time = cpu_to_le64(il->_3945.last_tsf), |
| .duration = cpu_to_le16(1), |
| }; |
| u8 type = IL_MEASURE_BASIC; |
| u8 buffer[32]; |
| u8 channel; |
| |
| if (count) { |
| char *p = buffer; |
| strlcpy(buffer, buf, sizeof(buffer)); |
| 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); |
| } |
| |
| D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n", |
| type, params.channel, buf); |
| il3945_get_measurement(il, ¶ms, type); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(measurement, 0600, il3945_show_measurement, |
| il3945_store_measurement); |
| |
| static ssize_t |
| il3945_store_retry_rate(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| |
| il->retry_rate = simple_strtoul(buf, NULL, 0); |
| if (il->retry_rate <= 0) |
| il->retry_rate = 1; |
| |
| return count; |
| } |
| |
| static ssize_t |
| il3945_show_retry_rate(struct device *d, struct device_attribute *attr, |
| char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| return sprintf(buf, "%d", il->retry_rate); |
| } |
| |
| static DEVICE_ATTR(retry_rate, 0600, il3945_show_retry_rate, |
| il3945_store_retry_rate); |
| |
| static ssize_t |
| il3945_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, 0400, il3945_show_channels, NULL); |
| |
| static ssize_t |
| il3945_show_antenna(struct device *d, struct device_attribute *attr, char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| |
| if (!il_is_alive(il)) |
| return -EAGAIN; |
| |
| return sprintf(buf, "%d\n", il3945_mod_params.antenna); |
| } |
| |
| static ssize_t |
| il3945_store_antenna(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il __maybe_unused = dev_get_drvdata(d); |
| int ant; |
| |
| if (count == 0) |
| return 0; |
| |
| if (sscanf(buf, "%1i", &ant) != 1) { |
| D_INFO("not in hex or decimal form.\n"); |
| return count; |
| } |
| |
| if (ant >= 0 && ant <= 2) { |
| D_INFO("Setting antenna select to %d.\n", ant); |
| il3945_mod_params.antenna = (enum il3945_antenna)ant; |
| } else |
| D_INFO("Bad antenna select value %d.\n", ant); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(antenna, 0644, il3945_show_antenna, il3945_store_antenna); |
| |
| static ssize_t |
| il3945_show_status(struct device *d, struct device_attribute *attr, char *buf) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| if (!il_is_alive(il)) |
| return -EAGAIN; |
| return sprintf(buf, "0x%08x\n", (int)il->status); |
| } |
| |
| static DEVICE_ATTR(status, 0444, il3945_show_status, NULL); |
| |
| static ssize_t |
| il3945_dump_error_log(struct device *d, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct il_priv *il = dev_get_drvdata(d); |
| char *p = (char *)buf; |
| |
| if (p[0] == '1') |
| il3945_dump_nic_error_log(il); |
| |
| return strnlen(buf, count); |
| } |
| |
| static DEVICE_ATTR(dump_errors, 0200, NULL, il3945_dump_error_log); |
| |
| /***************************************************************************** |
| * |
| * driver setup and tear down |
| * |
| *****************************************************************************/ |
| |
| static int |
| il3945_setup_deferred_work(struct il_priv *il) |
| { |
| il->workqueue = create_singlethread_workqueue(DRV_NAME); |
| if (!il->workqueue) |
| return -ENOMEM; |
| |
| init_waitqueue_head(&il->wait_command_queue); |
| |
| INIT_WORK(&il->restart, il3945_bg_restart); |
| INIT_WORK(&il->rx_replenish, il3945_bg_rx_replenish); |
| INIT_DELAYED_WORK(&il->init_alive_start, il3945_bg_init_alive_start); |
| INIT_DELAYED_WORK(&il->alive_start, il3945_bg_alive_start); |
| INIT_DELAYED_WORK(&il->_3945.rfkill_poll, il3945_rfkill_poll); |
| |
| il_setup_scan_deferred_work(il); |
| |
| il3945_hw_setup_deferred_work(il); |
| |
| timer_setup(&il->watchdog, il_bg_watchdog, 0); |
| |
| tasklet_init(&il->irq_tasklet, |
| il3945_irq_tasklet, |
| (unsigned long)il); |
| |
| return 0; |
| } |
| |
| static void |
| il3945_cancel_deferred_work(struct il_priv *il) |
| { |
| il3945_hw_cancel_deferred_work(il); |
| |
| cancel_delayed_work_sync(&il->init_alive_start); |
| cancel_delayed_work(&il->alive_start); |
| |
| il_cancel_scan_deferred_work(il); |
| } |
| |
| static struct attribute *il3945_sysfs_entries[] = { |
| &dev_attr_antenna.attr, |
| &dev_attr_channels.attr, |
| &dev_attr_dump_errors.attr, |
| &dev_attr_flags.attr, |
| &dev_attr_filter_flags.attr, |
| &dev_attr_measurement.attr, |
| &dev_attr_retry_rate.attr, |
| &dev_attr_status.attr, |
| &dev_attr_temperature.attr, |
| &dev_attr_tx_power.attr, |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| &dev_attr_debug_level.attr, |
| #endif |
| NULL |
| }; |
| |
| static const struct attribute_group il3945_attribute_group = { |
| .name = NULL, /* put in device directory */ |
| .attrs = il3945_sysfs_entries, |
| }; |
| |
| static struct ieee80211_ops il3945_mac_ops __ro_after_init = { |
| .tx = il3945_mac_tx, |
| .start = il3945_mac_start, |
| .stop = il3945_mac_stop, |
| .add_interface = il_mac_add_interface, |
| .remove_interface = il_mac_remove_interface, |
| .change_interface = il_mac_change_interface, |
| .config = il_mac_config, |
| .configure_filter = il3945_configure_filter, |
| .set_key = il3945_mac_set_key, |
| .conf_tx = il_mac_conf_tx, |
| .reset_tsf = il_mac_reset_tsf, |
| .bss_info_changed = il_mac_bss_info_changed, |
| .hw_scan = il_mac_hw_scan, |
| .sta_add = il3945_mac_sta_add, |
| .sta_remove = il_mac_sta_remove, |
| .tx_last_beacon = il_mac_tx_last_beacon, |
| .flush = il_mac_flush, |
| }; |
| |
| static int |
| il3945_init_drv(struct il_priv *il) |
| { |
| int ret; |
| struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; |
| |
| il->retry_rate = 1; |
| il->beacon_skb = NULL; |
| |
| spin_lock_init(&il->sta_lock); |
| spin_lock_init(&il->hcmd_lock); |
| |
| INIT_LIST_HEAD(&il->free_frames); |
| |
| mutex_init(&il->mutex); |
| |
| il->ieee_channels = NULL; |
| il->ieee_rates = NULL; |
| il->band = NL80211_BAND_2GHZ; |
| |
| il->iw_mode = NL80211_IFTYPE_STATION; |
| il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; |
| |
| /* initialize force reset */ |
| il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD; |
| |
| if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { |
| IL_WARN("Unsupported EEPROM version: 0x%04X\n", |
| eeprom->version); |
| ret = -EINVAL; |
| goto err; |
| } |
| ret = il_init_channel_map(il); |
| if (ret) { |
| IL_ERR("initializing regulatory failed: %d\n", ret); |
| goto err; |
| } |
| |
| /* Set up txpower settings in driver for all channels */ |
| if (il3945_txpower_set_from_eeprom(il)) { |
| ret = -EIO; |
| goto err_free_channel_map; |
| } |
| |
| ret = il_init_geos(il); |
| if (ret) { |
| IL_ERR("initializing geos failed: %d\n", ret); |
| goto err_free_channel_map; |
| } |
| il3945_init_hw_rates(il, il->ieee_rates); |
| |
| return 0; |
| |
| err_free_channel_map: |
| il_free_channel_map(il); |
| err: |
| return ret; |
| } |
| |
| #define IL3945_MAX_PROBE_REQUEST 200 |
| |
| static int |
| il3945_setup_mac(struct il_priv *il) |
| { |
| int ret; |
| struct ieee80211_hw *hw = il->hw; |
| |
| hw->rate_control_algorithm = "iwl-3945-rs"; |
| hw->sta_data_size = sizeof(struct il3945_sta_priv); |
| hw->vif_data_size = sizeof(struct il_vif_priv); |
| |
| /* Tell mac80211 our characteristics */ |
| ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); |
| ieee80211_hw_set(hw, SUPPORTS_PS); |
| ieee80211_hw_set(hw, SIGNAL_DBM); |
| ieee80211_hw_set(hw, SPECTRUM_MGMT); |
| |
| hw->wiphy->interface_modes = |
| BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); |
| |
| hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
| hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | |
| REGULATORY_DISABLE_BEACON_HINTS; |
| |
| hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| |
| 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 = IL3945_MAX_PROBE_REQUEST - 24 - 2; |
| |
| /* Default value; 4 EDCA QOS priorities */ |
| hw->queues = 4; |
| |
| if (il->bands[NL80211_BAND_2GHZ].n_channels) |
| il->hw->wiphy->bands[NL80211_BAND_2GHZ] = |
| &il->bands[NL80211_BAND_2GHZ]; |
| |
| if (il->bands[NL80211_BAND_5GHZ].n_channels) |
| il->hw->wiphy->bands[NL80211_BAND_5GHZ] = |
| &il->bands[NL80211_BAND_5GHZ]; |
| |
| il_leds_init(il); |
| |
| wiphy_ext_feature_set(il->hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); |
| |
| ret = ieee80211_register_hw(il->hw); |
| if (ret) { |
| IL_ERR("Failed to register hw (error %d)\n", ret); |
| return ret; |
| } |
| il->mac80211_registered = 1; |
| |
| return 0; |
| } |
| |
| static int |
| il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| int err = 0; |
| struct il_priv *il; |
| struct ieee80211_hw *hw; |
| struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data); |
| struct il3945_eeprom *eeprom; |
| unsigned long flags; |
| |
| /*********************** |
| * 1. Allocating HW data |
| * ********************/ |
| |
| hw = ieee80211_alloc_hw(sizeof(struct il_priv), &il3945_mac_ops); |
| if (!hw) { |
| err = -ENOMEM; |
| goto out; |
| } |
| il = hw->priv; |
| il->hw = hw; |
| SET_IEEE80211_DEV(hw, &pdev->dev); |
| |
| il->cmd_queue = IL39_CMD_QUEUE_NUM; |
| |
| D_INFO("*** LOAD DRIVER ***\n"); |
| il->cfg = cfg; |
| il->ops = &il3945_ops; |
| #ifdef CONFIG_IWLEGACY_DEBUGFS |
| il->debugfs_ops = &il3945_debugfs_ops; |
| #endif |
| il->pci_dev = pdev; |
| il->inta_mask = CSR_INI_SET_MASK; |
| |
| /*************************** |
| * 2. Initializing PCI bus |
| * *************************/ |
| pci_disable_link_state(pdev, |
| PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | |
| PCIE_LINK_STATE_CLKPM); |
| |
| 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) { |
| IL_WARN("No suitable DMA available.\n"); |
| goto out_pci_disable_device; |
| } |
| |
| pci_set_drvdata(pdev, il); |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) |
| goto out_pci_disable_device; |
| |
| /*********************** |
| * 3. Read REV Register |
| * ********************/ |
| il->hw_base = pci_ioremap_bar(pdev, 0); |
| if (!il->hw_base) { |
| err = -ENODEV; |
| goto out_pci_release_regions; |
| } |
| |
| D_INFO("pci_resource_len = 0x%08llx\n", |
| (unsigned long long)pci_resource_len(pdev, 0)); |
| D_INFO("pci_resource_base = %p\n", il->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); |
| |
| /* these spin locks will be used in apm_init and EEPROM access |
| * we should init now |
| */ |
| spin_lock_init(&il->reg_lock); |
| spin_lock_init(&il->lock); |
| |
| /* |
| * stop and reset the on-board processor just in case it is in a |
| * strange state ... like being left stranded by a primary kernel |
| * and this is now the kdump kernel trying to start up |
| */ |
| _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
| |
| /*********************** |
| * 4. Read EEPROM |
| * ********************/ |
| |
| /* Read the EEPROM */ |
| err = il_eeprom_init(il); |
| if (err) { |
| IL_ERR("Unable to init EEPROM\n"); |
| goto out_iounmap; |
| } |
| /* MAC Address location in EEPROM same for 3945/4965 */ |
| eeprom = (struct il3945_eeprom *)il->eeprom; |
| D_INFO("MAC address: %pM\n", eeprom->mac_address); |
| SET_IEEE80211_PERM_ADDR(il->hw, eeprom->mac_address); |
| |
| /*********************** |
| * 5. Setup HW Constants |
| * ********************/ |
| /* Device-specific setup */ |
| err = il3945_hw_set_hw_params(il); |
| if (err) { |
| IL_ERR("failed to set hw settings\n"); |
| goto out_eeprom_free; |
| } |
| |
| /*********************** |
| * 6. Setup il |
| * ********************/ |
| |
| err = il3945_init_drv(il); |
| if (err) { |
| IL_ERR("initializing driver failed\n"); |
| goto out_unset_hw_params; |
| } |
| |
| IL_INFO("Detected Intel Wireless WiFi Link %s\n", il->cfg->name); |
| |
| /*********************** |
| * 7. Setup Services |
| * ********************/ |
| |
| spin_lock_irqsave(&il->lock, flags); |
| il_disable_interrupts(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| pci_enable_msi(il->pci_dev); |
| |
| err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il); |
| if (err) { |
| IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq); |
| goto out_disable_msi; |
| } |
| |
| err = sysfs_create_group(&pdev->dev.kobj, &il3945_attribute_group); |
| if (err) { |
| IL_ERR("failed to create sysfs device attributes\n"); |
| goto out_release_irq; |
| } |
| |
| il_set_rxon_channel(il, &il->bands[NL80211_BAND_2GHZ].channels[5]); |
| err = il3945_setup_deferred_work(il); |
| if (err) |
| goto out_remove_sysfs; |
| |
| il3945_setup_handlers(il); |
| il_power_initialize(il); |
| |
| /********************************* |
| * 8. Setup and Register mac80211 |
| * *******************************/ |
| |
| il_enable_interrupts(il); |
| |
| err = il3945_setup_mac(il); |
| if (err) |
| goto out_destroy_workqueue; |
| |
| il_dbgfs_register(il, DRV_NAME); |
| |
| /* Start monitoring the killswitch */ |
| queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ); |
| |
| return 0; |
| |
| out_destroy_workqueue: |
| destroy_workqueue(il->workqueue); |
| il->workqueue = NULL; |
| out_remove_sysfs: |
| sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
| out_release_irq: |
| free_irq(il->pci_dev->irq, il); |
| out_disable_msi: |
| pci_disable_msi(il->pci_dev); |
| il_free_geos(il); |
| il_free_channel_map(il); |
| out_unset_hw_params: |
| il3945_unset_hw_params(il); |
| out_eeprom_free: |
| il_eeprom_free(il); |
| out_iounmap: |
| iounmap(il->hw_base); |
| out_pci_release_regions: |
| pci_release_regions(pdev); |
| out_pci_disable_device: |
| pci_disable_device(pdev); |
| out_ieee80211_free_hw: |
| ieee80211_free_hw(il->hw); |
| out: |
| return err; |
| } |
| |
| static void |
| il3945_pci_remove(struct pci_dev *pdev) |
| { |
| struct il_priv *il = pci_get_drvdata(pdev); |
| unsigned long flags; |
| |
| if (!il) |
| return; |
| |
| D_INFO("*** UNLOAD DRIVER ***\n"); |
| |
| il_dbgfs_unregister(il); |
| |
| set_bit(S_EXIT_PENDING, &il->status); |
| |
| il_leds_exit(il); |
| |
| if (il->mac80211_registered) { |
| ieee80211_unregister_hw(il->hw); |
| il->mac80211_registered = 0; |
| } else { |
| il3945_down(il); |
| } |
| |
| /* |
| * Make sure device is reset to low power before unloading driver. |
| * This may be redundant with il_down(), but there are paths to |
| * run il_down() without calling apm_ops.stop(), and there are |
| * paths to avoid running il_down() at all before leaving driver. |
| * This (inexpensive) call *makes sure* device is reset. |
| */ |
| il_apm_stop(il); |
| |
| /* make sure we flush any pending irq or |
| * tasklet for the driver |
| */ |
| spin_lock_irqsave(&il->lock, flags); |
| il_disable_interrupts(il); |
| spin_unlock_irqrestore(&il->lock, flags); |
| |
| il3945_synchronize_irq(il); |
| |
| sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
| |
| cancel_delayed_work_sync(&il->_3945.rfkill_poll); |
| |
| il3945_dealloc_ucode_pci(il); |
| |
| if (il->rxq.bd) |
| il3945_rx_queue_free(il, &il->rxq); |
| il3945_hw_txq_ctx_free(il); |
| |
| il3945_unset_hw_params(il); |
| |
| /*netif_stop_queue(dev); */ |
| flush_workqueue(il->workqueue); |
| |
| /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes |
| * il->workqueue... so we can't take down the workqueue |
| * until now... */ |
| destroy_workqueue(il->workqueue); |
| il->workqueue = NULL; |
| |
| free_irq(pdev->irq, il); |
| pci_disable_msi(pdev); |
| |
| iounmap(il->hw_base); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| |
| il_free_channel_map(il); |
| il_free_geos(il); |
| kfree(il->scan_cmd); |
| dev_kfree_skb(il->beacon_skb); |
| ieee80211_free_hw(il->hw); |
| } |
| |
| /***************************************************************************** |
| * |
| * driver and module entry point |
| * |
| *****************************************************************************/ |
| |
| static struct pci_driver il3945_driver = { |
| .name = DRV_NAME, |
| .id_table = il3945_hw_card_ids, |
| .probe = il3945_pci_probe, |
| .remove = il3945_pci_remove, |
| .driver.pm = IL_LEGACY_PM_OPS, |
| }; |
| |
| static int __init |
| il3945_init(void) |
| { |
| |
| int ret; |
| pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); |
| pr_info(DRV_COPYRIGHT "\n"); |
| |
| /* |
| * Disabling hardware scan means that mac80211 will perform scans |
| * "the hard way", rather than using device's scan. |
| */ |
| if (il3945_mod_params.disable_hw_scan) { |
| pr_info("hw_scan is disabled\n"); |
| il3945_mac_ops.hw_scan = NULL; |
| } |
| |
| ret = il3945_rate_control_register(); |
| if (ret) { |
| pr_err("Unable to register rate control algorithm: %d\n", ret); |
| return ret; |
| } |
| |
| ret = pci_register_driver(&il3945_driver); |
| if (ret) { |
| pr_err("Unable to initialize PCI module\n"); |
| goto error_register; |
| } |
| |
| return ret; |
| |
| error_register: |
| il3945_rate_control_unregister(); |
| return ret; |
| } |
| |
| static void __exit |
| il3945_exit(void) |
| { |
| pci_unregister_driver(&il3945_driver); |
| il3945_rate_control_unregister(); |
| } |
| |
| MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX)); |
| |
| module_param_named(antenna, il3945_mod_params.antenna, int, 0444); |
| MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); |
| module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, 0444); |
| MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])"); |
| module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int, |
| 0444); |
| MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)"); |
| #ifdef CONFIG_IWLEGACY_DEBUG |
| module_param_named(debug, il_debug_level, uint, 0644); |
| MODULE_PARM_DESC(debug, "debug output mask"); |
| #endif |
| module_param_named(fw_restart, il3945_mod_params.restart_fw, int, 0444); |
| MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); |
| |
| module_exit(il3945_exit); |
| module_init(il3945_init); |