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path: root/drivers/net/wireless/iwlegacy/3945-mac.c
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Diffstat (limited to 'drivers/net/wireless/iwlegacy/3945-mac.c')
-rw-r--r--drivers/net/wireless/iwlegacy/3945-mac.c3959
1 files changed, 0 insertions, 3959 deletions
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
deleted file mode 100644
index e8b5545ca..000000000
--- a/drivers/net/wireless/iwlegacy/3945-mac.c
+++ /dev/null
@@ -1,3959 +0,0 @@
-/******************************************************************************
- *
- * 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.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#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/pci-aspm.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 id;
- u8 unicast;
- 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;
- }
-
- unicast = !is_multicast_ether_addr(hdr->addr1);
- id = 0;
-
- 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;
- int write;
-
- spin_lock_irqsave(&rxq->lock, flags);
- write = rxq->write & ~0x7;
- 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(struct il_priv *il)
-{
- 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 ieee80211_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 == IEEE80211_BAND_5GHZ)
- scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
- else {
- scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
- /* NOTE: if we were doing 6Mb OFDM for scans we'd use
- * power level:
- * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
- */
- }
-
- 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.
- * reject_firmware() is synchronous, file is in memory on return. */
- for (idx = api_max; idx >= api_min; idx--) {
- sprintf(buf, "/*(DEBLOBBED)*/");
- ret = reject_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));
-
- if (il->beacon_skb)
- 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 ieee80211_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 IEEE80211_BAND_2GHZ:
- scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
- scan->tx_cmd.rate = RATE_1M_PLCP;
- band = IEEE80211_BAND_2GHZ;
- break;
- case IEEE80211_BAND_5GHZ:
- scan->tx_cmd.rate = RATE_6M_PLCP;
- band = IEEE80211_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;
- struct ieee80211_conf *conf = NULL;
-
- 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);
-
- conf = &il->hw->conf;
-
- 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, S_IWUSR | S_IRUGO, 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, S_IRUGO, 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, S_IWUSR | S_IRUGO, 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, S_IWUSR | S_IRUGO, 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, S_IWUSR | S_IRUGO, 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, &params, type);
-
- return count;
-}
-
-static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, 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, S_IWUSR | S_IRUSR, 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, S_IRUSR, 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, S_IWUSR | S_IRUGO, 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, S_IRUGO, 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, S_IWUSR, NULL, il3945_dump_error_log);
-
-/*****************************************************************************
- *
- * driver setup and tear down
- *
- *****************************************************************************/
-
-static void
-il3945_setup_deferred_work(struct il_priv *il)
-{
- il->workqueue = create_singlethread_workqueue(DRV_NAME);
-
- 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);
-
- setup_timer(&il->watchdog, il_bg_watchdog, (unsigned long)il);
-
- tasklet_init(&il->irq_tasklet,
- (void (*)(unsigned long))il3945_irq_tasklet,
- (unsigned long)il);
-}
-
-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 struct attribute_group il3945_attribute_group = {
- .name = NULL, /* put in device directory */
- .attrs = il3945_sysfs_entries,
-};
-
-static struct ieee80211_ops il3945_mac_ops __read_mostly = {
- .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 = IEEE80211_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[IEEE80211_BAND_2GHZ].n_channels)
- il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
- &il->bands[IEEE80211_BAND_2GHZ];
-
- if (il->bands[IEEE80211_BAND_5GHZ].n_channels)
- il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
- &il->bands[IEEE80211_BAND_5GHZ];
-
- il_leds_init(il);
-
- 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;
-
- /*
- * 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) {
- D_INFO("Disabling hw_scan\n");
- il3945_mac_ops.hw_scan = NULL;
- }
-
- 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[IEEE80211_BAND_2GHZ].channels[5]);
- il3945_setup_deferred_work(il);
- 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_remove_sysfs;
-
- err = il_dbgfs_register(il, DRV_NAME);
- if (err)
- IL_ERR("failed to create debugfs files. Ignoring error: %d\n",
- err);
-
- /* Start monitoring the killswitch */
- queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ);
-
- return 0;
-
-out_remove_sysfs:
- destroy_workqueue(il->workqueue);
- il->workqueue = NULL;
- 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);
- if (il->beacon_skb)
- 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");
-
- 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();
-}
-
-/*(DEBLOBBED)*/
-
-module_param_named(antenna, il3945_mod_params.antenna, int, S_IRUGO);
-MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
-module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, S_IRUGO);
-MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])");
-module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int,
- S_IRUGO);
-MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)");
-#ifdef CONFIG_IWLEGACY_DEBUG
-module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "debug output mask");
-#endif
-module_param_named(fw_restart, il3945_mod_params.restart_fw, int, S_IRUGO);
-MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
-
-module_exit(il3945_exit);
-module_init(il3945_init);