[IWLWIFI]: add iwlwifi wireless drivers
This patch adds the mac80211 based wireless drivers for the Intel
PRO/Wireless 3945ABG/BG Network Connection and Intel Wireless WiFi
Link AGN (4965) adapters.
[ Move driver into it's own directory -DaveM ]
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
new file mode 100644
index 0000000..b79dabc
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -0,0 +1,9323 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2007 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:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+/*
+ * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
+ * by defining IWL to either 3945 or 4965. The Makefile used when building
+ * the base targets will create base-3945.o and base-4965.o
+ *
+ * The eventual goal is to move as many of the #if IWL / #endif blocks out of
+ * this file and into the hardware specific implementation files (iwl-XXXX.c)
+ * and leave only the common (non #ifdef sprinkled) code in this file
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/firmware.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+
+#include <net/ieee80211_radiotap.h>
+#include <net/mac80211.h>
+
+#include <asm/div64.h>
+
+#include "iwlwifi.h"
+#include "iwl-4965.h"
+#include "iwl-helpers.h"
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+u32 iwl_debug_level;
+#endif
+
+/******************************************************************************
+ *
+ * module boiler plate
+ *
+ ******************************************************************************/
+
+/* module parameters */
+int iwl_param_disable_hw_scan;
+int iwl_param_debug;
+int iwl_param_disable; /* def: enable radio */
+int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
+int iwl_param_hwcrypto; /* def: using software encryption */
+int iwl_param_qos_enable = 1;
+int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
+
+/*
+ * module name, copyright, version, etc.
+ * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
+ */
+
+#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+#define VD "d"
+#else
+#define VD
+#endif
+
+#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
+#define VS "s"
+#else
+#define VS
+#endif
+
+#define IWLWIFI_VERSION "0.1.15k" VD VS
+#define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
+#define DRV_VERSION IWLWIFI_VERSION
+
+/* Change firmware file name, using "-" and incrementing number,
+ * *only* when uCode interface or architecture changes so that it
+ * is not compatible with earlier drivers.
+ * This number will also appear in << 8 position of 1st dword of uCode file */
+#define IWL4965_UCODE_API "-1"
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR(DRV_COPYRIGHT);
+MODULE_LICENSE("GPL");
+
+__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
+{
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ int hdr_len = ieee80211_get_hdrlen(fc);
+
+ if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
+ return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
+ return NULL;
+}
+
+static const struct ieee80211_hw_mode *iwl_get_hw_mode(
+ struct iwl_priv *priv, int mode)
+{
+ int i;
+
+ for (i = 0; i < 3; i++)
+ if (priv->modes[i].mode == mode)
+ return &priv->modes[i];
+
+ return NULL;
+}
+
+static int iwl_is_empty_essid(const char *essid, int essid_len)
+{
+ /* Single white space is for Linksys APs */
+ if (essid_len == 1 && essid[0] == ' ')
+ return 1;
+
+ /* Otherwise, if the entire essid is 0, we assume it is hidden */
+ while (essid_len) {
+ essid_len--;
+ if (essid[essid_len] != '\0')
+ return 0;
+ }
+
+ return 1;
+}
+
+static const char *iwl_escape_essid(const char *essid, u8 essid_len)
+{
+ static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
+ const char *s = essid;
+ char *d = escaped;
+
+ if (iwl_is_empty_essid(essid, essid_len)) {
+ memcpy(escaped, "<hidden>", sizeof("<hidden>"));
+ return escaped;
+ }
+
+ essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
+ while (essid_len--) {
+ if (*s == '\0') {
+ *d++ = '\\';
+ *d++ = '0';
+ s++;
+ } else
+ *d++ = *s++;
+ }
+ *d = '\0';
+ return escaped;
+}
+
+static void iwl_print_hex_dump(int level, void *p, u32 len)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (!(iwl_debug_level & level))
+ return;
+
+ print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
+ p, len, 1);
+#endif
+}
+
+/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
+ * DMA services
+ *
+ * Theory of operation
+ *
+ * A queue is a circular buffers with 'Read' and 'Write' pointers.
+ * 2 empty entries always kept in the buffer to protect from overflow.
+ *
+ * For Tx queue, there are low mark and high mark limits. If, after queuing
+ * the packet for Tx, free space become < low mark, Tx queue stopped. When
+ * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
+ * Tx queue resumed.
+ *
+ * The IPW operates with six queues, one receive queue in the device's
+ * sram, one transmit queue for sending commands to the device firmware,
+ * and four transmit queues for data.
+ ***************************************************/
+
+static int iwl_queue_space(const struct iwl_queue *q)
+{
+ int s = q->last_used - q->first_empty;
+
+ if (q->last_used > q->first_empty)
+ s -= q->n_bd;
+
+ if (s <= 0)
+ s += q->n_window;
+ /* keep some reserve to not confuse empty and full situations */
+ s -= 2;
+ if (s < 0)
+ s = 0;
+ return s;
+}
+
+/* XXX: n_bd must be power-of-two size */
+static inline int iwl_queue_inc_wrap(int index, int n_bd)
+{
+ return ++index & (n_bd - 1);
+}
+
+/* XXX: n_bd must be power-of-two size */
+static inline int iwl_queue_dec_wrap(int index, int n_bd)
+{
+ return --index & (n_bd - 1);
+}
+
+static inline int x2_queue_used(const struct iwl_queue *q, int i)
+{
+ return q->first_empty > q->last_used ?
+ (i >= q->last_used && i < q->first_empty) :
+ !(i < q->last_used && i >= q->first_empty);
+}
+
+static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
+{
+ if (is_huge)
+ return q->n_window;
+
+ return index & (q->n_window - 1);
+}
+
+static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
+ int count, int slots_num, u32 id)
+{
+ q->n_bd = count;
+ q->n_window = slots_num;
+ q->id = id;
+
+ /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
+ * and iwl_queue_dec_wrap are broken. */
+ BUG_ON(!is_power_of_2(count));
+
+ /* slots_num must be power-of-two size, otherwise
+ * get_cmd_index is broken. */
+ BUG_ON(!is_power_of_2(slots_num));
+
+ q->low_mark = q->n_window / 4;
+ if (q->low_mark < 4)
+ q->low_mark = 4;
+
+ q->high_mark = q->n_window / 8;
+ if (q->high_mark < 2)
+ q->high_mark = 2;
+
+ q->first_empty = q->last_used = 0;
+
+ return 0;
+}
+
+static int iwl_tx_queue_alloc(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq, u32 id)
+{
+ struct pci_dev *dev = priv->pci_dev;
+
+ if (id != IWL_CMD_QUEUE_NUM) {
+ txq->txb = kmalloc(sizeof(txq->txb[0]) *
+ TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
+ if (!txq->txb) {
+ IWL_ERROR("kmalloc for auxilary BD "
+ "structures failed\n");
+ goto error;
+ }
+ } else
+ txq->txb = NULL;
+
+ txq->bd = pci_alloc_consistent(dev,
+ sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
+ &txq->q.dma_addr);
+
+ if (!txq->bd) {
+ IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
+ sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
+ goto error;
+ }
+ txq->q.id = id;
+
+ return 0;
+
+ error:
+ if (txq->txb) {
+ kfree(txq->txb);
+ txq->txb = NULL;
+ }
+
+ return -ENOMEM;
+}
+
+int iwl_tx_queue_init(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
+{
+ struct pci_dev *dev = priv->pci_dev;
+ int len;
+ int rc = 0;
+
+ /* alocate command space + one big command for scan since scan
+ * command is very huge the system will not have two scan at the
+ * same time */
+ len = sizeof(struct iwl_cmd) * slots_num;
+ if (txq_id == IWL_CMD_QUEUE_NUM)
+ len += IWL_MAX_SCAN_SIZE;
+ txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
+ if (!txq->cmd)
+ return -ENOMEM;
+
+ rc = iwl_tx_queue_alloc(priv, txq, txq_id);
+ if (rc) {
+ pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+
+ return -ENOMEM;
+ }
+ txq->need_update = 0;
+
+ /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
+ * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
+ BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
+ iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
+
+ iwl_hw_tx_queue_init(priv, txq);
+
+ return 0;
+}
+
+/**
+ * iwl_tx_queue_free - Deallocate DMA queue.
+ * @txq: Transmit queue to deallocate.
+ *
+ * Empty queue by removing and destroying all BD's.
+ * Free all buffers. txq itself is not freed.
+ *
+ */
+void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ struct iwl_queue *q = &txq->q;
+ struct pci_dev *dev = priv->pci_dev;
+ int len;
+
+ if (q->n_bd == 0)
+ return;
+
+ /* first, empty all BD's */
+ for (; q->first_empty != q->last_used;
+ q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
+ iwl_hw_txq_free_tfd(priv, txq);
+
+ len = sizeof(struct iwl_cmd) * q->n_window;
+ if (q->id == IWL_CMD_QUEUE_NUM)
+ len += IWL_MAX_SCAN_SIZE;
+
+ pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+
+ /* free buffers belonging to queue itself */
+ if (txq->q.n_bd)
+ pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
+ txq->q.n_bd, txq->bd, txq->q.dma_addr);
+
+ if (txq->txb) {
+ kfree(txq->txb);
+ txq->txb = NULL;
+ }
+
+ /* 0 fill whole structure */
+ memset(txq, 0, sizeof(*txq));
+}
+
+const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+
+/*************** STATION TABLE MANAGEMENT ****
+ *
+ * NOTE: This needs to be overhauled to better synchronize between
+ * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
+ *
+ * mac80211 should also be examined to determine if sta_info is duplicating
+ * the functionality provided here
+ */
+
+/**************************************************************/
+
+static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
+{
+ int index = IWL_INVALID_STATION;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+
+ if (is_ap)
+ index = IWL_AP_ID;
+ else if (is_broadcast_ether_addr(addr))
+ index = priv->hw_setting.bcast_sta_id;
+ else
+ for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
+ if (priv->stations[i].used &&
+ !compare_ether_addr(priv->stations[i].sta.sta.addr,
+ addr)) {
+ index = i;
+ break;
+ }
+
+ if (unlikely(index == IWL_INVALID_STATION))
+ goto out;
+
+ if (priv->stations[index].used) {
+ priv->stations[index].used = 0;
+ priv->num_stations--;
+ }
+
+ BUG_ON(priv->num_stations < 0);
+
+out:
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+ return 0;
+}
+
+static void iwl_clear_stations_table(struct iwl_priv *priv)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+
+ priv->num_stations = 0;
+ memset(priv->stations, 0, sizeof(priv->stations));
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+}
+
+u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
+{
+ int i;
+ int index = IWL_INVALID_STATION;
+ struct iwl_station_entry *station;
+ unsigned long flags_spin;
+
+ spin_lock_irqsave(&priv->sta_lock, flags_spin);
+ if (is_ap)
+ index = IWL_AP_ID;
+ else if (is_broadcast_ether_addr(addr))
+ index = priv->hw_setting.bcast_sta_id;
+ else
+ for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
+ if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
+ addr)) {
+ index = i;
+ break;
+ }
+
+ if (!priv->stations[i].used &&
+ index == IWL_INVALID_STATION)
+ index = i;
+ }
+
+
+ /* These twh conditions has the same outcome but keep them separate
+ since they have different meaning */
+ if (unlikely(index == IWL_INVALID_STATION)) {
+ spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+ return index;
+ }
+
+ if (priv->stations[index].used &&
+ !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
+ spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+ return index;
+ }
+
+
+ IWL_DEBUG_ASSOC("Add STA ID %d: " MAC_FMT "\n", index, MAC_ARG(addr));
+ station = &priv->stations[index];
+ station->used = 1;
+ priv->num_stations++;
+
+ memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
+ memcpy(station->sta.sta.addr, addr, ETH_ALEN);
+ station->sta.mode = 0;
+ station->sta.sta.sta_id = index;
+ station->sta.station_flags = 0;
+
+#ifdef CONFIG_IWLWIFI_HT
+ /* BCAST station and IBSS stations do not work in HT mode */
+ if (index != priv->hw_setting.bcast_sta_id &&
+ priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
+ iwl4965_set_ht_add_station(priv, index);
+#endif /*CONFIG_IWLWIFI_HT*/
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+ iwl_send_add_station(priv, &station->sta, flags);
+ return index;
+
+}
+
+/*************** DRIVER STATUS FUNCTIONS *****/
+
+static inline int iwl_is_ready(struct iwl_priv *priv)
+{
+ /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
+ * set but EXIT_PENDING is not */
+ return test_bit(STATUS_READY, &priv->status) &&
+ test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
+ !test_bit(STATUS_EXIT_PENDING, &priv->status);
+}
+
+static inline int iwl_is_alive(struct iwl_priv *priv)
+{
+ return test_bit(STATUS_ALIVE, &priv->status);
+}
+
+static inline int iwl_is_init(struct iwl_priv *priv)
+{
+ return test_bit(STATUS_INIT, &priv->status);
+}
+
+static inline int iwl_is_rfkill(struct iwl_priv *priv)
+{
+ return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
+ test_bit(STATUS_RF_KILL_SW, &priv->status);
+}
+
+static inline int iwl_is_ready_rf(struct iwl_priv *priv)
+{
+
+ if (iwl_is_rfkill(priv))
+ return 0;
+
+ return iwl_is_ready(priv);
+}
+
+/*************** HOST COMMAND QUEUE FUNCTIONS *****/
+
+#define IWL_CMD(x) case x : return #x
+
+static const char *get_cmd_string(u8 cmd)
+{
+ switch (cmd) {
+ IWL_CMD(REPLY_ALIVE);
+ IWL_CMD(REPLY_ERROR);
+ IWL_CMD(REPLY_RXON);
+ IWL_CMD(REPLY_RXON_ASSOC);
+ IWL_CMD(REPLY_QOS_PARAM);
+ IWL_CMD(REPLY_RXON_TIMING);
+ IWL_CMD(REPLY_ADD_STA);
+ IWL_CMD(REPLY_REMOVE_STA);
+ IWL_CMD(REPLY_REMOVE_ALL_STA);
+ IWL_CMD(REPLY_TX);
+ IWL_CMD(REPLY_RATE_SCALE);
+ IWL_CMD(REPLY_LEDS_CMD);
+ IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
+ IWL_CMD(RADAR_NOTIFICATION);
+ IWL_CMD(REPLY_QUIET_CMD);
+ IWL_CMD(REPLY_CHANNEL_SWITCH);
+ IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
+ IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
+ IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
+ IWL_CMD(POWER_TABLE_CMD);
+ IWL_CMD(PM_SLEEP_NOTIFICATION);
+ IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
+ IWL_CMD(REPLY_SCAN_CMD);
+ IWL_CMD(REPLY_SCAN_ABORT_CMD);
+ IWL_CMD(SCAN_START_NOTIFICATION);
+ IWL_CMD(SCAN_RESULTS_NOTIFICATION);
+ IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
+ IWL_CMD(BEACON_NOTIFICATION);
+ IWL_CMD(REPLY_TX_BEACON);
+ IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
+ IWL_CMD(QUIET_NOTIFICATION);
+ IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
+ IWL_CMD(MEASURE_ABORT_NOTIFICATION);
+ IWL_CMD(REPLY_BT_CONFIG);
+ IWL_CMD(REPLY_STATISTICS_CMD);
+ IWL_CMD(STATISTICS_NOTIFICATION);
+ IWL_CMD(REPLY_CARD_STATE_CMD);
+ IWL_CMD(CARD_STATE_NOTIFICATION);
+ IWL_CMD(MISSED_BEACONS_NOTIFICATION);
+ IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
+ IWL_CMD(SENSITIVITY_CMD);
+ IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
+ IWL_CMD(REPLY_RX_PHY_CMD);
+ IWL_CMD(REPLY_RX_MPDU_CMD);
+ IWL_CMD(REPLY_4965_RX);
+ IWL_CMD(REPLY_COMPRESSED_BA);
+ default:
+ return "UNKNOWN";
+
+ }
+}
+
+#define HOST_COMPLETE_TIMEOUT (HZ / 2)
+
+/**
+ * iwl_enqueue_hcmd - enqueue a uCode command
+ * @priv: device private data point
+ * @cmd: a point to the ucode command structure
+ *
+ * The function returns < 0 values to indicate the operation is
+ * failed. On success, it turns the index (> 0) of command in the
+ * command queue.
+ */
+static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
+{
+ struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
+ struct iwl_queue *q = &txq->q;
+ struct iwl_tfd_frame *tfd;
+ u32 *control_flags;
+ struct iwl_cmd *out_cmd;
+ u32 idx;
+ u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
+ dma_addr_t phys_addr;
+ int ret;
+ unsigned long flags;
+
+ /* If any of the command structures end up being larger than
+ * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
+ * we will need to increase the size of the TFD entries */
+ BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
+ !(cmd->meta.flags & CMD_SIZE_HUGE));
+
+ if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
+ IWL_ERROR("No space for Tx\n");
+ return -ENOSPC;
+ }
+
+ spin_lock_irqsave(&priv->hcmd_lock, flags);
+
+ tfd = &txq->bd[q->first_empty];
+ memset(tfd, 0, sizeof(*tfd));
+
+ control_flags = (u32 *) tfd;
+
+ idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
+ out_cmd = &txq->cmd[idx];
+
+ out_cmd->hdr.cmd = cmd->id;
+ memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
+ memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
+
+ /* At this point, the out_cmd now has all of the incoming cmd
+ * information */
+
+ out_cmd->hdr.flags = 0;
+ out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
+ INDEX_TO_SEQ(q->first_empty));
+ if (out_cmd->meta.flags & CMD_SIZE_HUGE)
+ out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
+
+ phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
+ offsetof(struct iwl_cmd, hdr);
+ iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
+
+ IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
+ "%d bytes at %d[%d]:%d\n",
+ get_cmd_string(out_cmd->hdr.cmd),
+ out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
+ fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
+
+ txq->need_update = 1;
+ ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
+ q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
+ iwl_tx_queue_update_write_ptr(priv, txq);
+
+ spin_unlock_irqrestore(&priv->hcmd_lock, flags);
+ return ret ? ret : idx;
+}
+
+int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
+{
+ int ret;
+
+ BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
+
+ /* An asynchronous command can not expect an SKB to be set. */
+ BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
+
+ /* An asynchronous command MUST have a callback. */
+ BUG_ON(!cmd->meta.u.callback);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return -EBUSY;
+
+ ret = iwl_enqueue_hcmd(priv, cmd);
+ if (ret < 0) {
+ IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
+ get_cmd_string(cmd->id), ret);
+ return ret;
+ }
+ return 0;
+}
+
+int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
+{
+ int cmd_idx;
+ int ret;
+ static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
+
+ BUG_ON(cmd->meta.flags & CMD_ASYNC);
+
+ /* A synchronous command can not have a callback set. */
+ BUG_ON(cmd->meta.u.callback != NULL);
+
+ if (atomic_xchg(&entry, 1)) {
+ IWL_ERROR("Error sending %s: Already sending a host command\n",
+ get_cmd_string(cmd->id));
+ return -EBUSY;
+ }
+
+ set_bit(STATUS_HCMD_ACTIVE, &priv->status);
+
+ if (cmd->meta.flags & CMD_WANT_SKB)
+ cmd->meta.source = &cmd->meta;
+
+ cmd_idx = iwl_enqueue_hcmd(priv, cmd);
+ if (cmd_idx < 0) {
+ ret = cmd_idx;
+ IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
+ get_cmd_string(cmd->id), ret);
+ goto out;
+ }
+
+ ret = wait_event_interruptible_timeout(priv->wait_command_queue,
+ !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
+ HOST_COMPLETE_TIMEOUT);
+ if (!ret) {
+ if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
+ IWL_ERROR("Error sending %s: time out after %dms.\n",
+ get_cmd_string(cmd->id),
+ jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
+
+ clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+ ret = -ETIMEDOUT;
+ goto cancel;
+ }
+ }
+
+ if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
+ IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
+ get_cmd_string(cmd->id));
+ ret = -ECANCELED;
+ goto fail;
+ }
+ if (test_bit(STATUS_FW_ERROR, &priv->status)) {
+ IWL_DEBUG_INFO("Command %s failed: FW Error\n",
+ get_cmd_string(cmd->id));
+ ret = -EIO;
+ goto fail;
+ }
+ if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
+ IWL_ERROR("Error: Response NULL in '%s'\n",
+ get_cmd_string(cmd->id));
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = 0;
+ goto out;
+
+cancel:
+ if (cmd->meta.flags & CMD_WANT_SKB) {
+ struct iwl_cmd *qcmd;
+
+ /* Cancel the CMD_WANT_SKB flag for the cmd in the
+ * TX cmd queue. Otherwise in case the cmd comes
+ * in later, it will possibly set an invalid
+ * address (cmd->meta.source). */
+ qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
+ qcmd->meta.flags &= ~CMD_WANT_SKB;
+ }
+fail:
+ if (cmd->meta.u.skb) {
+ dev_kfree_skb_any(cmd->meta.u.skb);
+ cmd->meta.u.skb = NULL;
+ }
+out:
+ atomic_set(&entry, 0);
+ return ret;
+}
+
+int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
+{
+ /* A command can not be asynchronous AND expect an SKB to be set. */
+ BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
+ (cmd->meta.flags & CMD_WANT_SKB));
+
+ if (cmd->meta.flags & CMD_ASYNC)
+ return iwl_send_cmd_async(priv, cmd);
+
+ return iwl_send_cmd_sync(priv, cmd);
+}
+
+int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
+{
+ struct iwl_host_cmd cmd = {
+ .id = id,
+ .len = len,
+ .data = data,
+ };
+
+ return iwl_send_cmd_sync(priv, &cmd);
+}
+
+static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
+{
+ struct iwl_host_cmd cmd = {
+ .id = id,
+ .len = sizeof(val),
+ .data = &val,
+ };
+
+ return iwl_send_cmd_sync(priv, &cmd);
+}
+
+int iwl_send_statistics_request(struct iwl_priv *priv)
+{
+ return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
+}
+
+/**
+ * iwl_rxon_add_station - add station into station table.
+ *
+ * there is only one AP station with id= IWL_AP_ID
+ * NOTE: mutex must be held before calling the this fnction
+*/
+static int iwl_rxon_add_station(struct iwl_priv *priv,
+ const u8 *addr, int is_ap)
+{
+ u8 rc;
+
+ /* Remove this station if it happens to already exist */
+ iwl_remove_station(priv, addr, is_ap);
+
+ rc = iwl_add_station(priv, addr, is_ap, 0);
+
+ iwl4965_add_station(priv, addr, is_ap);
+
+ return rc;
+}
+
+/**
+ * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
+ * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
+ * @channel: Any channel valid for the requested phymode
+
+ * In addition to setting the staging RXON, priv->phymode is also set.
+ *
+ * NOTE: Does not commit to the hardware; it sets appropriate bit fields
+ * in the staging RXON flag structure based on the phymode
+ */
+static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
+{
+ if (!iwl_get_channel_info(priv, phymode, channel)) {
+ IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
+ channel, phymode);
+ return -EINVAL;
+ }
+
+ if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
+ (priv->phymode == phymode))
+ return 0;
+
+ priv->staging_rxon.channel = cpu_to_le16(channel);
+ if (phymode == MODE_IEEE80211A)
+ priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
+ else
+ priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
+
+ priv->phymode = phymode;
+
+ IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
+
+ return 0;
+}
+
+/**
+ * iwl_check_rxon_cmd - validate RXON structure is valid
+ *
+ * NOTE: This is really only useful during development and can eventually
+ * be #ifdef'd out once the driver is stable and folks aren't actively
+ * making changes
+ */
+static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
+{
+ int error = 0;
+ int counter = 1;
+
+ if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
+ error |= le32_to_cpu(rxon->flags &
+ (RXON_FLG_TGJ_NARROW_BAND_MSK |
+ RXON_FLG_RADAR_DETECT_MSK));
+ if (error)
+ IWL_WARNING("check 24G fields %d | %d\n",
+ counter++, error);
+ } else {
+ error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
+ 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
+ if (error)
+ IWL_WARNING("check 52 fields %d | %d\n",
+ counter++, error);
+ error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
+ if (error)
+ IWL_WARNING("check 52 CCK %d | %d\n",
+ counter++, error);
+ }
+ error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
+ if (error)
+ IWL_WARNING("check mac addr %d | %d\n", counter++, error);
+
+ /* make sure basic rates 6Mbps and 1Mbps are supported */
+ error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
+ ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
+ if (error)
+ IWL_WARNING("check basic rate %d | %d\n", counter++, error);
+
+ error |= (le16_to_cpu(rxon->assoc_id) > 2007);
+ if (error)
+ IWL_WARNING("check assoc id %d | %d\n", counter++, error);
+
+ error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
+ == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
+ if (error)
+ IWL_WARNING("check CCK and short slot %d | %d\n",
+ counter++, error);
+
+ error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
+ == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
+ if (error)
+ IWL_WARNING("check CCK & auto detect %d | %d\n",
+ counter++, error);
+
+ error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
+ RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
+ if (error)
+ IWL_WARNING("check TGG and auto detect %d | %d\n",
+ counter++, error);
+
+ if (error)
+ IWL_WARNING("Tuning to channel %d\n",
+ le16_to_cpu(rxon->channel));
+
+ if (error) {
+ IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
+ return -1;
+ }
+ return 0;
+}
+
+/**
+ * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
+ * @priv: staging_rxon is comapred to active_rxon
+ *
+ * If the RXON structure is changing sufficient to require a new
+ * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
+ * to indicate a new tune is required.
+ */
+static int iwl_full_rxon_required(struct iwl_priv *priv)
+{
+
+ /* These items are only settable from the full RXON command */
+ if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
+ compare_ether_addr(priv->staging_rxon.bssid_addr,
+ priv->active_rxon.bssid_addr) ||
+ compare_ether_addr(priv->staging_rxon.node_addr,
+ priv->active_rxon.node_addr) ||
+ compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
+ priv->active_rxon.wlap_bssid_addr) ||
+ (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
+ (priv->staging_rxon.channel != priv->active_rxon.channel) ||
+ (priv->staging_rxon.air_propagation !=
+ priv->active_rxon.air_propagation) ||
+ (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
+ priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
+ (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
+ priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
+ (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
+ (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
+ return 1;
+
+ /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
+ * be updated with the RXON_ASSOC command -- however only some
+ * flag transitions are allowed using RXON_ASSOC */
+
+ /* Check if we are not switching bands */
+ if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
+ (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
+ return 1;
+
+ /* Check if we are switching association toggle */
+ if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
+ (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
+ return 1;
+
+ return 0;
+}
+
+static int iwl_send_rxon_assoc(struct iwl_priv *priv)
+{
+ int rc = 0;
+ struct iwl_rx_packet *res = NULL;
+ struct iwl_rxon_assoc_cmd rxon_assoc;
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_RXON_ASSOC,
+ .len = sizeof(rxon_assoc),
+ .meta.flags = CMD_WANT_SKB,
+ .data = &rxon_assoc,
+ };
+ const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
+ const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
+
+ if ((rxon1->flags == rxon2->flags) &&
+ (rxon1->filter_flags == rxon2->filter_flags) &&
+ (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
+ (rxon1->ofdm_ht_single_stream_basic_rates ==
+ rxon2->ofdm_ht_single_stream_basic_rates) &&
+ (rxon1->ofdm_ht_dual_stream_basic_rates ==
+ rxon2->ofdm_ht_dual_stream_basic_rates) &&
+ (rxon1->rx_chain == rxon2->rx_chain) &&
+ (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
+ IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
+ return 0;
+ }
+
+ rxon_assoc.flags = priv->staging_rxon.flags;
+ rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
+ rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
+ rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
+ rxon_assoc.reserved = 0;
+ rxon_assoc.ofdm_ht_single_stream_basic_rates =
+ priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
+ rxon_assoc.ofdm_ht_dual_stream_basic_rates =
+ priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
+ rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
+
+ rc = iwl_send_cmd_sync(priv, &cmd);
+ if (rc)
+ return rc;
+
+ res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
+ if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
+ rc = -EIO;
+ }
+
+ priv->alloc_rxb_skb--;
+ dev_kfree_skb_any(cmd.meta.u.skb);
+
+ return rc;
+}
+
+/**
+ * iwl_commit_rxon - commit staging_rxon to hardware
+ *
+ * The RXON command in staging_rxon is commited to the hardware and
+ * the active_rxon structure is updated with the new data. This
+ * function correctly transitions out of the RXON_ASSOC_MSK state if
+ * a HW tune is required based on the RXON structure changes.
+ */
+static int iwl_commit_rxon(struct iwl_priv *priv)
+{
+ /* cast away the const for active_rxon in this function */
+ struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
+ int rc = 0;
+
+ if (!iwl_is_alive(priv))
+ return -1;
+
+ /* always get timestamp with Rx frame */
+ priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
+
+ rc = iwl_check_rxon_cmd(&priv->staging_rxon);
+ if (rc) {
+ IWL_ERROR("Invalid RXON configuration. Not committing.\n");
+ return -EINVAL;
+ }
+
+ /* If we don't need to send a full RXON, we can use
+ * iwl_rxon_assoc_cmd which is used to reconfigure filter
+ * and other flags for the current radio configuration. */
+ if (!iwl_full_rxon_required(priv)) {
+ rc = iwl_send_rxon_assoc(priv);
+ if (rc) {
+ IWL_ERROR("Error setting RXON_ASSOC "
+ "configuration (%d).\n", rc);
+ return rc;
+ }
+
+ memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
+
+ return 0;
+ }
+
+ /* station table will be cleared */
+ priv->assoc_station_added = 0;
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
+ if (!priv->error_recovering)
+ priv->start_calib = 0;
+
+ iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
+#endif /* CONFIG_IWLWIFI_SENSITIVITY */
+
+ /* If we are currently associated and the new config requires
+ * an RXON_ASSOC and the new config wants the associated mask enabled,
+ * we must clear the associated from the active configuration
+ * before we apply the new config */
+ if (iwl_is_associated(priv) &&
+ (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
+ IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
+ active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+
+ rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
+ sizeof(struct iwl_rxon_cmd),
+ &priv->active_rxon);
+
+ /* If the mask clearing failed then we set
+ * active_rxon back to what it was previously */
+ if (rc) {
+ active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
+ IWL_ERROR("Error clearing ASSOC_MSK on current "
+ "configuration (%d).\n", rc);
+ return rc;
+ }
+
+ /* The RXON bit toggling will have cleared out the
+ * station table in the uCode, so blank it in the driver
+ * as well */
+ iwl_clear_stations_table(priv);
+ } else if (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) {
+ /* When switching from non-associated to associated, the
+ * uCode clears out the station table; so clear it in the
+ * driver as well */
+ iwl_clear_stations_table(priv);
+ }
+
+ IWL_DEBUG_INFO("Sending RXON\n"
+ "* with%s RXON_FILTER_ASSOC_MSK\n"
+ "* channel = %d\n"
+ "* bssid = " MAC_FMT "\n",
+ ((priv->staging_rxon.filter_flags &
+ RXON_FILTER_ASSOC_MSK) ? "" : "out"),
+ le16_to_cpu(priv->staging_rxon.channel),
+ MAC_ARG(priv->staging_rxon.bssid_addr));
+
+ /* Apply the new configuration */
+ rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
+ sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
+ if (rc) {
+ IWL_ERROR("Error setting new configuration (%d).\n", rc);
+ return rc;
+ }
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ if (!priv->error_recovering)
+ priv->start_calib = 0;
+
+ priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
+ iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
+#endif /* CONFIG_IWLWIFI_SENSITIVITY */
+
+ memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
+
+ /* If we issue a new RXON command which required a tune then we must
+ * send a new TXPOWER command or we won't be able to Tx any frames */
+ rc = iwl_hw_reg_send_txpower(priv);
+ if (rc) {
+ IWL_ERROR("Error setting Tx power (%d).\n", rc);
+ return rc;
+ }
+
+ /* Add the broadcast address so we can send broadcast frames */
+ if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
+ IWL_INVALID_STATION) {
+ IWL_ERROR("Error adding BROADCAST address for transmit.\n");
+ return -EIO;
+ }
+
+ /* If we have set the ASSOC_MSK and we are in BSS mode then
+ * add the IWL_AP_ID to the station rate table */
+ if (iwl_is_associated(priv) &&
+ (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
+ if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
+ == IWL_INVALID_STATION) {
+ IWL_ERROR("Error adding AP address for transmit.\n");
+ return -EIO;
+ }
+ priv->assoc_station_added = 1;
+ }
+
+ return 0;
+}
+
+static int iwl_send_bt_config(struct iwl_priv *priv)
+{
+ struct iwl_bt_cmd bt_cmd = {
+ .flags = 3,
+ .lead_time = 0xAA,
+ .max_kill = 1,
+ .kill_ack_mask = 0,
+ .kill_cts_mask = 0,
+ };
+
+ return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
+ sizeof(struct iwl_bt_cmd), &bt_cmd);
+}
+
+static int iwl_send_scan_abort(struct iwl_priv *priv)
+{
+ int rc = 0;
+ struct iwl_rx_packet *res;
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_SCAN_ABORT_CMD,
+ .meta.flags = CMD_WANT_SKB,
+ };
+
+ /* If there isn't a scan actively going on in the hardware
+ * then we are in between scan bands and not actually
+ * actively scanning, so don't send the abort command */
+ if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
+ clear_bit(STATUS_SCAN_ABORTING, &priv->status);
+ return 0;
+ }
+
+ rc = iwl_send_cmd_sync(priv, &cmd);
+ if (rc) {
+ clear_bit(STATUS_SCAN_ABORTING, &priv->status);
+ return rc;
+ }
+
+ res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
+ if (res->u.status != CAN_ABORT_STATUS) {
+ /* The scan abort will return 1 for success or
+ * 2 for "failure". A failure condition can be
+ * due to simply not being in an active scan which
+ * can occur if we send the scan abort before we
+ * the microcode has notified us that a scan is
+ * completed. */
+ IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
+ clear_bit(STATUS_SCAN_ABORTING, &priv->status);
+ clear_bit(STATUS_SCAN_HW, &priv->status);
+ }
+
+ dev_kfree_skb_any(cmd.meta.u.skb);
+
+ return rc;
+}
+
+static int iwl_card_state_sync_callback(struct iwl_priv *priv,
+ struct iwl_cmd *cmd,
+ struct sk_buff *skb)
+{
+ return 1;
+}
+
+/*
+ * CARD_STATE_CMD
+ *
+ * Use: Sets the internal card state to enable, disable, or halt
+ *
+ * When in the 'enable' state the card operates as normal.
+ * When in the 'disable' state, the card enters into a low power mode.
+ * When in the 'halt' state, the card is shut down and must be fully
+ * restarted to come back on.
+ */
+static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
+{
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_CARD_STATE_CMD,
+ .len = sizeof(u32),
+ .data = &flags,
+ .meta.flags = meta_flag,
+ };
+
+ if (meta_flag & CMD_ASYNC)
+ cmd.meta.u.callback = iwl_card_state_sync_callback;
+
+ return iwl_send_cmd(priv, &cmd);
+}
+
+static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
+ struct iwl_cmd *cmd, struct sk_buff *skb)
+{
+ struct iwl_rx_packet *res = NULL;
+
+ if (!skb) {
+ IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
+ return 1;
+ }
+
+ res = (struct iwl_rx_packet *)skb->data;
+ if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
+ res->hdr.flags);
+ return 1;
+ }
+
+ switch (res->u.add_sta.status) {
+ case ADD_STA_SUCCESS_MSK:
+ break;
+ default:
+ break;
+ }
+
+ /* We didn't cache the SKB; let the caller free it */
+ return 1;
+}
+
+int iwl_send_add_station(struct iwl_priv *priv,
+ struct iwl_addsta_cmd *sta, u8 flags)
+{
+ struct iwl_rx_packet *res = NULL;
+ int rc = 0;
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_ADD_STA,
+ .len = sizeof(struct iwl_addsta_cmd),
+ .meta.flags = flags,
+ .data = sta,
+ };
+
+ if (flags & CMD_ASYNC)
+ cmd.meta.u.callback = iwl_add_sta_sync_callback;
+ else
+ cmd.meta.flags |= CMD_WANT_SKB;
+
+ rc = iwl_send_cmd(priv, &cmd);
+
+ if (rc || (flags & CMD_ASYNC))
+ return rc;
+
+ res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
+ if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
+ res->hdr.flags);
+ rc = -EIO;
+ }
+
+ if (rc == 0) {
+ switch (res->u.add_sta.status) {
+ case ADD_STA_SUCCESS_MSK:
+ IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
+ break;
+ default:
+ rc = -EIO;
+ IWL_WARNING("REPLY_ADD_STA failed\n");
+ break;
+ }
+ }
+
+ priv->alloc_rxb_skb--;
+ dev_kfree_skb_any(cmd.meta.u.skb);
+
+ return rc;
+}
+
+static int iwl_update_sta_key_info(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf,
+ u8 sta_id)
+{
+ unsigned long flags;
+ __le16 key_flags = 0;
+
+ switch (keyconf->alg) {
+ case ALG_CCMP:
+ key_flags |= STA_KEY_FLG_CCMP;
+ key_flags |= cpu_to_le16(
+ keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
+ key_flags &= ~STA_KEY_FLG_INVALID;
+ break;
+ case ALG_TKIP:
+ case ALG_WEP:
+ return -EINVAL;
+ default:
+ return -EINVAL;
+ }
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].keyinfo.alg = keyconf->alg;
+ priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
+ memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
+ keyconf->keylen);
+
+ memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
+ keyconf->keylen);
+ priv->stations[sta_id].sta.key.key_flags = key_flags;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
+ return 0;
+}
+
+static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
+ memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
+ priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
+ return 0;
+}
+
+static void iwl_clear_free_frames(struct iwl_priv *priv)
+{
+ struct list_head *element;
+
+ IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
+ priv->frames_count);
+
+ while (!list_empty(&priv->free_frames)) {
+ element = priv->free_frames.next;
+ list_del(element);
+ kfree(list_entry(element, struct iwl_frame, list));
+ priv->frames_count--;
+ }
+
+ if (priv->frames_count) {
+ IWL_WARNING("%d frames still in use. Did we lose one?\n",
+ priv->frames_count);
+ priv->frames_count = 0;
+ }
+}
+
+static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
+{
+ struct iwl_frame *frame;
+ struct list_head *element;
+ if (list_empty(&priv->free_frames)) {
+ frame = kzalloc(sizeof(*frame), GFP_KERNEL);
+ if (!frame) {
+ IWL_ERROR("Could not allocate frame!\n");
+ return NULL;
+ }
+
+ priv->frames_count++;
+ return frame;
+ }
+
+ element = priv->free_frames.next;
+ list_del(element);
+ return list_entry(element, struct iwl_frame, list);
+}
+
+static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
+{
+ memset(frame, 0, sizeof(*frame));
+ list_add(&frame->list, &priv->free_frames);
+}
+
+unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
+ struct ieee80211_hdr *hdr,
+ const u8 *dest, int left)
+{
+
+ if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
+ ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
+ (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
+ return 0;
+
+ if (priv->ibss_beacon->len > left)
+ return 0;
+
+ memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
+
+ return priv->ibss_beacon->len;
+}
+
+int iwl_rate_index_from_plcp(int plcp)
+{
+ int i = 0;
+
+ if (plcp & RATE_MCS_HT_MSK) {
+ i = (plcp & 0xff);
+
+ if (i >= IWL_RATE_MIMO_6M_PLCP)
+ i = i - IWL_RATE_MIMO_6M_PLCP;
+
+ i += IWL_FIRST_OFDM_RATE;
+ /* skip 9M not supported in ht*/
+ if (i >= IWL_RATE_9M_INDEX)
+ i += 1;
+ if ((i >= IWL_FIRST_OFDM_RATE) &&
+ (i <= IWL_LAST_OFDM_RATE))
+ return i;
+ } else {
+ for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
+ if (iwl_rates[i].plcp == (plcp &0xFF))
+ return i;
+ }
+ return -1;
+}
+
+static u8 iwl_rate_get_lowest_plcp(int rate_mask)
+{
+ u8 i;
+
+ for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
+ i = iwl_rates[i].next_ieee) {
+ if (rate_mask & (1 << i))
+ return iwl_rates[i].plcp;
+ }
+
+ return IWL_RATE_INVALID;
+}
+
+static int iwl_send_beacon_cmd(struct iwl_priv *priv)
+{
+ struct iwl_frame *frame;
+ unsigned int frame_size;
+ int rc;
+ u8 rate;
+
+ frame = iwl_get_free_frame(priv);
+
+ if (!frame) {
+ IWL_ERROR("Could not obtain free frame buffer for beacon "
+ "command.\n");
+ return -ENOMEM;
+ }
+
+ if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
+ rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
+ 0xFF0);
+ if (rate == IWL_INVALID_RATE)
+ rate = IWL_RATE_6M_PLCP;
+ } else {
+ rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
+ if (rate == IWL_INVALID_RATE)
+ rate = IWL_RATE_1M_PLCP;
+ }
+
+ frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
+
+ rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
+ &frame->u.cmd[0]);
+
+ iwl_free_frame(priv, frame);
+
+ return rc;
+}
+
+/******************************************************************************
+ *
+ * EEPROM related functions
+ *
+ ******************************************************************************/
+
+static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
+{
+ memcpy(mac, priv->eeprom.mac_address, 6);
+}
+
+/**
+ * iwl_eeprom_init - read EEPROM contents
+ *
+ * Load the EEPROM from adapter into priv->eeprom
+ *
+ * NOTE: This routine uses the non-debug IO access functions.
+ */
+int iwl_eeprom_init(struct iwl_priv *priv)
+{
+ u16 *e = (u16 *)&priv->eeprom;
+ u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
+ u32 r;
+ int sz = sizeof(priv->eeprom);
+ int rc;
+ int i;
+ u16 addr;
+
+ /* The EEPROM structure has several padding buffers within it
+ * and when adding new EEPROM maps is subject to programmer errors
+ * which may be very difficult to identify without explicitly
+ * checking the resulting size of the eeprom map. */
+ BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
+
+ if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
+ IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
+ return -ENOENT;
+ }
+
+ rc = iwl_eeprom_aqcuire_semaphore(priv);
+ if (rc < 0) {
+ IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
+ return -ENOENT;
+ }
+
+ /* eeprom is an array of 16bit values */
+ for (addr = 0; addr < sz; addr += sizeof(u16)) {
+ _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
+ _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
+
+ for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
+ i += IWL_EEPROM_ACCESS_DELAY) {
+ r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
+ if (r & CSR_EEPROM_REG_READ_VALID_MSK)
+ break;
+ udelay(IWL_EEPROM_ACCESS_DELAY);
+ }
+
+ if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
+ IWL_ERROR("Time out reading EEPROM[%d]", addr);
+ rc = -ETIMEDOUT;
+ goto done;
+ }
+ e[addr / 2] = le16_to_cpu(r >> 16);
+ }
+ rc = 0;
+
+done:
+ iwl_eeprom_release_semaphore(priv);
+ return rc;
+}
+
+/******************************************************************************
+ *
+ * Misc. internal state and helper functions
+ *
+ ******************************************************************************/
+#ifdef CONFIG_IWLWIFI_DEBUG
+
+/**
+ * iwl_report_frame - dump frame to syslog during debug sessions
+ *
+ * hack this function to show different aspects of received frames,
+ * including selective frame dumps.
+ * group100 parameter selects whether to show 1 out of 100 good frames.
+ *
+ * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
+ * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
+ * is 3945-specific and gives bad output for 4965. Need to split the
+ * functionality, keep common stuff here.
+ */
+void iwl_report_frame(struct iwl_priv *priv,
+ struct iwl_rx_packet *pkt,
+ struct ieee80211_hdr *header, int group100)
+{
+ u32 to_us;
+ u32 print_summary = 0;
+ u32 print_dump = 0; /* set to 1 to dump all frames' contents */
+ u32 hundred = 0;
+ u32 dataframe = 0;
+ u16 fc;
+ u16 seq_ctl;
+ u16 channel;
+ u16 phy_flags;
+ int rate_sym;
+ u16 length;
+ u16 status;
+ u16 bcn_tmr;
+ u32 tsf_low;
+ u64 tsf;
+ u8 rssi;
+ u8 agc;
+ u16 sig_avg;
+ u16 noise_diff;
+ struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
+ struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
+ struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
+ u8 *data = IWL_RX_DATA(pkt);
+
+ /* MAC header */
+ fc = le16_to_cpu(header->frame_control);
+ seq_ctl = le16_to_cpu(header->seq_ctrl);
+
+ /* metadata */
+ channel = le16_to_cpu(rx_hdr->channel);
+ phy_flags = le16_to_cpu(rx_hdr->phy_flags);
+ rate_sym = rx_hdr->rate;
+ length = le16_to_cpu(rx_hdr->len);
+
+ /* end-of-frame status and timestamp */
+ status = le32_to_cpu(rx_end->status);
+ bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
+ tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
+ tsf = le64_to_cpu(rx_end->timestamp);
+
+ /* signal statistics */
+ rssi = rx_stats->rssi;
+ agc = rx_stats->agc;
+ sig_avg = le16_to_cpu(rx_stats->sig_avg);
+ noise_diff = le16_to_cpu(rx_stats->noise_diff);
+
+ to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
+
+ /* if data frame is to us and all is good,
+ * (optionally) print summary for only 1 out of every 100 */
+ if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
+ (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
+ dataframe = 1;
+ if (!group100)
+ print_summary = 1; /* print each frame */
+ else if (priv->framecnt_to_us < 100) {
+ priv->framecnt_to_us++;
+ print_summary = 0;
+ } else {
+ priv->framecnt_to_us = 0;
+ print_summary = 1;
+ hundred = 1;
+ }
+ } else {
+ /* print summary for all other frames */
+ print_summary = 1;
+ }
+
+ if (print_summary) {
+ char *title;
+ u32 rate;
+
+ if (hundred)
+ title = "100Frames";
+ else if (fc & IEEE80211_FCTL_RETRY)
+ title = "Retry";
+ else if (ieee80211_is_assoc_response(fc))
+ title = "AscRsp";
+ else if (ieee80211_is_reassoc_response(fc))
+ title = "RasRsp";
+ else if (ieee80211_is_probe_response(fc)) {
+ title = "PrbRsp";
+ print_dump = 1; /* dump frame contents */
+ } else if (ieee80211_is_beacon(fc)) {
+ title = "Beacon";
+ print_dump = 1; /* dump frame contents */
+ } else if (ieee80211_is_atim(fc))
+ title = "ATIM";
+ else if (ieee80211_is_auth(fc))
+ title = "Auth";
+ else if (ieee80211_is_deauth(fc))
+ title = "DeAuth";
+ else if (ieee80211_is_disassoc(fc))
+ title = "DisAssoc";
+ else
+ title = "Frame";
+
+ rate = iwl_rate_index_from_plcp(rate_sym);
+ if (rate == -1)
+ rate = 0;
+ else
+ rate = iwl_rates[rate].ieee / 2;
+
+ /* print frame summary.
+ * MAC addresses show just the last byte (for brevity),
+ * but you can hack it to show more, if you'd like to. */
+ if (dataframe)
+ IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
+ "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
+ title, fc, header->addr1[5],
+ length, rssi, channel, rate);
+ else {
+ /* src/dst addresses assume managed mode */
+ IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
+ "src=0x%02x, rssi=%u, tim=%lu usec, "
+ "phy=0x%02x, chnl=%d\n",
+ title, fc, header->addr1[5],
+ header->addr3[5], rssi,
+ tsf_low - priv->scan_start_tsf,
+ phy_flags, channel);
+ }
+ }
+ if (print_dump)
+ iwl_print_hex_dump(IWL_DL_RX, data, length);
+}
+#endif
+
+static void iwl_unset_hw_setting(struct iwl_priv *priv)
+{
+ if (priv->hw_setting.shared_virt)
+ pci_free_consistent(priv->pci_dev,
+ sizeof(struct iwl_shared),
+ priv->hw_setting.shared_virt,
+ priv->hw_setting.shared_phys);
+}
+
+/**
+ * iwl_supported_rate_to_ie - fill in the supported rate in IE field
+ *
+ * return : set the bit for each supported rate insert in ie
+ */
+static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
+ u16 basic_rate, int max_count)
+{
+ u16 ret_rates = 0, bit;
+ int i;
+ u8 *rates;
+
+ rates = &(ie[1]);
+
+ for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
+ if (bit & supported_rate) {
+ ret_rates |= bit;
+ rates[*ie] = iwl_rates[i].ieee |
+ ((bit & basic_rate) ? 0x80 : 0x00);
+ *ie = *ie + 1;
+ if (*ie >= max_count)
+ break;
+ }
+ }
+
+ return ret_rates;
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+void static iwl_set_ht_capab(struct ieee80211_hw *hw,
+ struct ieee80211_ht_capability *ht_cap,
+ u8 use_wide_chan);
+#endif
+
+/**
+ * iwl_fill_probe_req - fill in all required fields and IE for probe request
+ */
+static u16 iwl_fill_probe_req(struct iwl_priv *priv,
+ struct ieee80211_mgmt *frame,
+ int left, int is_direct)
+{
+ int len = 0;
+ u8 *pos = NULL;
+ u16 ret_rates;
+
+ /* Make sure there is enough space for the probe request,
+ * two mandatory IEs and the data */
+ left -= 24;
+ if (left < 0)
+ return 0;
+ len += 24;
+
+ frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
+ memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
+ memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
+ memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
+ frame->seq_ctrl = 0;
+
+ /* fill in our indirect SSID IE */
+ /* ...next IE... */
+
+ left -= 2;
+ if (left < 0)
+ return 0;
+ len += 2;
+ pos = &(frame->u.probe_req.variable[0]);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = 0;
+
+ /* fill in our direct SSID IE... */
+ if (is_direct) {
+ /* ...next IE... */
+ left -= 2 + priv->essid_len;
+ if (left < 0)
+ return 0;
+ /* ... fill it in... */
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = priv->essid_len;
+ memcpy(pos, priv->essid, priv->essid_len);
+ pos += priv->essid_len;
+ len += 2 + priv->essid_len;
+ }
+
+ /* fill in supported rate */
+ /* ...next IE... */
+ left -= 2;
+ if (left < 0)
+ return 0;
+ /* ... fill it in... */
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos = 0;
+ ret_rates = priv->active_rate = priv->rates_mask;
+ priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
+
+ iwl_supported_rate_to_ie(pos, priv->active_rate,
+ priv->active_rate_basic, left);
+ len += 2 + *pos;
+ pos += (*pos) + 1;
+ ret_rates = ~ret_rates & priv->active_rate;
+
+ if (ret_rates == 0)
+ goto fill_end;
+
+ /* fill in supported extended rate */
+ /* ...next IE... */
+ left -= 2;
+ if (left < 0)
+ return 0;
+ /* ... fill it in... */
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos = 0;
+ iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
+ if (*pos > 0)
+ len += 2 + *pos;
+
+#ifdef CONFIG_IWLWIFI_HT
+ if (is_direct && priv->is_ht_enabled) {
+ u8 use_wide_chan = 1;
+
+ if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
+ use_wide_chan = 0;
+ pos += (*pos) + 1;
+ *pos++ = WLAN_EID_HT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_ht_capability);
+ iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
+ use_wide_chan);
+ len += 2 + sizeof(struct ieee80211_ht_capability);
+ }
+#endif /*CONFIG_IWLWIFI_HT */
+
+ fill_end:
+ return (u16)len;
+}
+
+/*
+ * QoS support
+*/
+#ifdef CONFIG_IWLWIFI_QOS
+static int iwl_send_qos_params_command(struct iwl_priv *priv,
+ struct iwl_qosparam_cmd *qos)
+{
+
+ return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
+ sizeof(struct iwl_qosparam_cmd), qos);
+}
+
+static void iwl_reset_qos(struct iwl_priv *priv)
+{
+ u16 cw_min = 15;
+ u16 cw_max = 1023;
+ u8 aifs = 2;
+ u8 is_legacy = 0;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->qos_data.qos_active = 0;
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
+ if (priv->qos_data.qos_enable)
+ priv->qos_data.qos_active = 1;
+ if (!(priv->active_rate & 0xfff0)) {
+ cw_min = 31;
+ is_legacy = 1;
+ }
+ } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
+ if (priv->qos_data.qos_enable)
+ priv->qos_data.qos_active = 1;
+ } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
+ cw_min = 31;
+ is_legacy = 1;
+ }
+
+ if (priv->qos_data.qos_active)
+ aifs = 3;
+
+ priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
+ priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
+ priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
+ priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
+ priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
+
+ if (priv->qos_data.qos_active) {
+ i = 1;
+ priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
+ priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
+ priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
+ priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
+ priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+
+ i = 2;
+ priv->qos_data.def_qos_parm.ac[i].cw_min =
+ cpu_to_le16((cw_min + 1) / 2 - 1);
+ priv->qos_data.def_qos_parm.ac[i].cw_max =
+ cpu_to_le16(cw_max);
+ priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
+ if (is_legacy)
+ priv->qos_data.def_qos_parm.ac[i].edca_txop =
+ cpu_to_le16(6016);
+ else
+ priv->qos_data.def_qos_parm.ac[i].edca_txop =
+ cpu_to_le16(3008);
+ priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+
+ i = 3;
+ priv->qos_data.def_qos_parm.ac[i].cw_min =
+ cpu_to_le16((cw_min + 1) / 4 - 1);
+ priv->qos_data.def_qos_parm.ac[i].cw_max =
+ cpu_to_le16((cw_max + 1) / 2 - 1);
+ priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
+ priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+ if (is_legacy)
+ priv->qos_data.def_qos_parm.ac[i].edca_txop =
+ cpu_to_le16(3264);
+ else
+ priv->qos_data.def_qos_parm.ac[i].edca_txop =
+ cpu_to_le16(1504);
+ } else {
+ for (i = 1; i < 4; i++) {
+ priv->qos_data.def_qos_parm.ac[i].cw_min =
+ cpu_to_le16(cw_min);
+ priv->qos_data.def_qos_parm.ac[i].cw_max =
+ cpu_to_le16(cw_max);
+ priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
+ priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
+ priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+ }
+ }
+ IWL_DEBUG_QOS("set QoS to default \n");
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
+{
+ unsigned long flags;
+
+ if (priv == NULL)
+ return;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ if (!priv->qos_data.qos_enable)
+ return;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->qos_data.def_qos_parm.qos_flags = 0;
+
+ if (priv->qos_data.qos_cap.q_AP.queue_request &&
+ !priv->qos_data.qos_cap.q_AP.txop_request)
+ priv->qos_data.def_qos_parm.qos_flags |=
+ QOS_PARAM_FLG_TXOP_TYPE_MSK;
+
+ if (priv->qos_data.qos_active)
+ priv->qos_data.def_qos_parm.qos_flags |=
+ QOS_PARAM_FLG_UPDATE_EDCA_MSK;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (force || iwl_is_associated(priv)) {
+ IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
+ priv->qos_data.qos_active);
+
+ iwl_send_qos_params_command(priv,
+ &(priv->qos_data.def_qos_parm));
+ }
+}
+
+#endif /* CONFIG_IWLWIFI_QOS */
+/*
+ * Power management (not Tx power!) functions
+ */
+#define MSEC_TO_USEC 1024
+
+#define NOSLP __constant_cpu_to_le16(0), 0, 0
+#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
+#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
+#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
+ __constant_cpu_to_le32(X1), \
+ __constant_cpu_to_le32(X2), \
+ __constant_cpu_to_le32(X3), \
+ __constant_cpu_to_le32(X4)}
+
+
+/* default power management (not Tx power) table values */
+/* for tim 0-10 */
+static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
+ {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
+ {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
+ {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
+ {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
+ {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
+ {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
+};
+
+/* for tim > 10 */
+static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
+ {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
+ {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
+ SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
+ {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
+ SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
+ {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
+ SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
+ {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
+ {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
+ SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
+};
+
+int iwl_power_init_handle(struct iwl_priv *priv)
+{
+ int rc = 0, i;
+ struct iwl_power_mgr *pow_data;
+ int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
+ u16 pci_pm;
+
+ IWL_DEBUG_POWER("Initialize power \n");
+
+ pow_data = &(priv->power_data);
+
+ memset(pow_data, 0, sizeof(*pow_data));
+
+ pow_data->active_index = IWL_POWER_RANGE_0;
+ pow_data->dtim_val = 0xffff;
+
+ memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
+ memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
+
+ rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
+ if (rc != 0)
+ return 0;
+ else {
+ struct iwl_powertable_cmd *cmd;
+
+ IWL_DEBUG_POWER("adjust power command flags\n");
+
+ for (i = 0; i < IWL_POWER_AC; i++) {
+ cmd = &pow_data->pwr_range_0[i].cmd;
+
+ if (pci_pm & 0x1)
+ cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
+ else
+ cmd->flags |= IWL_POWER_PCI_PM_MSK;
+ }
+ }
+ return rc;
+}
+
+static int iwl_update_power_cmd(struct iwl_priv *priv,
+ struct iwl_powertable_cmd *cmd, u32 mode)
+{
+ int rc = 0, i;
+ u8 skip;
+ u32 max_sleep = 0;
+ struct iwl_power_vec_entry *range;
+ u8 period = 0;
+ struct iwl_power_mgr *pow_data;
+
+ if (mode > IWL_POWER_INDEX_5) {
+ IWL_DEBUG_POWER("Error invalid power mode \n");
+ return -1;
+ }
+ pow_data = &(priv->power_data);
+
+ if (pow_data->active_index == IWL_POWER_RANGE_0)
+ range = &pow_data->pwr_range_0[0];
+ else
+ range = &pow_data->pwr_range_1[1];
+
+ memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
+
+#ifdef IWL_MAC80211_DISABLE
+ if (priv->assoc_network != NULL) {
+ unsigned long flags;
+
+ period = priv->assoc_network->tim.tim_period;
+ }
+#endif /*IWL_MAC80211_DISABLE */
+ skip = range[mode].no_dtim;
+
+ if (period == 0) {
+ period = 1;
+ skip = 0;
+ }
+
+ if (skip == 0) {
+ max_sleep = period;
+ cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
+ } else {
+ __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
+ max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
+ cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
+ }
+
+ for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
+ if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
+ cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
+ }
+
+ IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
+ IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
+ IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
+ IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
+ le32_to_cpu(cmd->sleep_interval[0]),
+ le32_to_cpu(cmd->sleep_interval[1]),
+ le32_to_cpu(cmd->sleep_interval[2]),
+ le32_to_cpu(cmd->sleep_interval[3]),
+ le32_to_cpu(cmd->sleep_interval[4]));
+
+ return rc;
+}
+
+static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
+{
+ u32 final_mode = mode;
+ int rc;
+ struct iwl_powertable_cmd cmd;
+
+ /* If on battery, set to 3,
+ * if plugged into AC power, set to CAM ("continuosly aware mode"),
+ * else user level */
+ switch (mode) {
+ case IWL_POWER_BATTERY:
+ final_mode = IWL_POWER_INDEX_3;
+ break;
+ case IWL_POWER_AC:
+ final_mode = IWL_POWER_MODE_CAM;
+ break;
+ default:
+ final_mode = mode;
+ break;
+ }
+
+ cmd.keep_alive_beacons = 0;
+
+ iwl_update_power_cmd(priv, &cmd, final_mode);
+
+ rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
+
+ if (final_mode == IWL_POWER_MODE_CAM)
+ clear_bit(STATUS_POWER_PMI, &priv->status);
+ else
+ set_bit(STATUS_POWER_PMI, &priv->status);
+
+ return rc;
+}
+
+int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
+{
+ /* Filter incoming packets to determine if they are targeted toward
+ * this network, discarding packets coming from ourselves */
+ switch (priv->iw_mode) {
+ case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
+ /* packets from our adapter are dropped (echo) */
+ if (!compare_ether_addr(header->addr2, priv->mac_addr))
+ return 0;
+ /* {broad,multi}cast packets to our IBSS go through */
+ if (is_multicast_ether_addr(header->addr1))
+ return !compare_ether_addr(header->addr3, priv->bssid);
+ /* packets to our adapter go through */
+ return !compare_ether_addr(header->addr1, priv->mac_addr);
+ case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
+ /* packets from our adapter are dropped (echo) */
+ if (!compare_ether_addr(header->addr3, priv->mac_addr))
+ return 0;
+ /* {broad,multi}cast packets to our BSS go through */
+ if (is_multicast_ether_addr(header->addr1))
+ return !compare_ether_addr(header->addr2, priv->bssid);
+ /* packets to our adapter go through */
+ return !compare_ether_addr(header->addr1, priv->mac_addr);
+ }
+
+ return 1;
+}
+
+#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
+
+const char *iwl_get_tx_fail_reason(u32 status)
+{
+ switch (status & TX_STATUS_MSK) {
+ case TX_STATUS_SUCCESS:
+ return "SUCCESS";
+ TX_STATUS_ENTRY(SHORT_LIMIT);
+ TX_STATUS_ENTRY(LONG_LIMIT);
+ TX_STATUS_ENTRY(FIFO_UNDERRUN);
+ TX_STATUS_ENTRY(MGMNT_ABORT);
+ TX_STATUS_ENTRY(NEXT_FRAG);
+ TX_STATUS_ENTRY(LIFE_EXPIRE);
+ TX_STATUS_ENTRY(DEST_PS);
+ TX_STATUS_ENTRY(ABORTED);
+ TX_STATUS_ENTRY(BT_RETRY);
+ TX_STATUS_ENTRY(STA_INVALID);
+ TX_STATUS_ENTRY(FRAG_DROPPED);
+ TX_STATUS_ENTRY(TID_DISABLE);
+ TX_STATUS_ENTRY(FRAME_FLUSHED);
+ TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
+ TX_STATUS_ENTRY(TX_LOCKED);
+ TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
+ }
+
+ return "UNKNOWN";
+}
+
+/**
+ * iwl_scan_cancel - Cancel any currently executing HW scan
+ *
+ * NOTE: priv->mutex is not required before calling this function
+ */
+static int iwl_scan_cancel(struct iwl_priv *priv)
+{
+ if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
+ clear_bit(STATUS_SCANNING, &priv->status);
+ return 0;
+ }
+
+ if (test_bit(STATUS_SCANNING, &priv->status)) {
+ if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_SCAN("Queuing scan abort.\n");
+ set_bit(STATUS_SCAN_ABORTING, &priv->status);
+ queue_work(priv->workqueue, &priv->abort_scan);
+
+ } else
+ IWL_DEBUG_SCAN("Scan abort already in progress.\n");
+
+ return test_bit(STATUS_SCANNING, &priv->status);
+ }
+
+ return 0;
+}
+
+/**
+ * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
+ * @ms: amount of time to wait (in milliseconds) for scan to abort
+ *
+ * NOTE: priv->mutex must be held before calling this function
+ */
+static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
+{
+ unsigned long now = jiffies;
+ int ret;
+
+ ret = iwl_scan_cancel(priv);
+ if (ret && ms) {
+ mutex_unlock(&priv->mutex);
+ while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
+ test_bit(STATUS_SCANNING, &priv->status))
+ msleep(1);
+ mutex_lock(&priv->mutex);
+
+ return test_bit(STATUS_SCANNING, &priv->status);
+ }
+
+ return ret;
+}
+
+static void iwl_sequence_reset(struct iwl_priv *priv)
+{
+ /* Reset ieee stats */
+
+ /* We don't reset the net_device_stats (ieee->stats) on
+ * re-association */
+
+ priv->last_seq_num = -1;
+ priv->last_frag_num = -1;
+ priv->last_packet_time = 0;
+
+ iwl_scan_cancel(priv);
+}
+
+#define MAX_UCODE_BEACON_INTERVAL 4096
+#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
+
+static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
+{
+ u16 new_val = 0;
+ u16 beacon_factor = 0;
+
+ beacon_factor =
+ (beacon_val + MAX_UCODE_BEACON_INTERVAL)
+ / MAX_UCODE_BEACON_INTERVAL;
+ new_val = beacon_val / beacon_factor;
+
+ return cpu_to_le16(new_val);
+}
+
+static void iwl_setup_rxon_timing(struct iwl_priv *priv)
+{
+ u64 interval_tm_unit;
+ u64 tsf, result;
+ unsigned long flags;
+ struct ieee80211_conf *conf = NULL;
+ u16 beacon_int = 0;
+
+ conf = ieee80211_get_hw_conf(priv->hw);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
+ priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
+
+ priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
+
+ tsf = priv->timestamp1;
+ tsf = ((tsf << 32) | priv->timestamp0);
+
+ beacon_int = priv->beacon_int;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
+ if (beacon_int == 0) {
+ priv->rxon_timing.beacon_interval = cpu_to_le16(100);
+ priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
+ } else {
+ priv->rxon_timing.beacon_interval =
+ cpu_to_le16(beacon_int);
+ priv->rxon_timing.beacon_interval =
+ iwl_adjust_beacon_interval(
+ le16_to_cpu(priv->rxon_timing.beacon_interval));
+ }
+
+ priv->rxon_timing.atim_window = 0;
+ } else {
+ priv->rxon_timing.beacon_interval =
+ iwl_adjust_beacon_interval(conf->beacon_int);
+ /* TODO: we need to get atim_window from upper stack
+ * for now we set to 0 */
+ priv->rxon_timing.atim_window = 0;
+ }
+
+ interval_tm_unit =
+ (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
+ result = do_div(tsf, interval_tm_unit);
+ priv->rxon_timing.beacon_init_val =
+ cpu_to_le32((u32) ((u64) interval_tm_unit - result));
+
+ IWL_DEBUG_ASSOC
+ ("beacon interval %d beacon timer %d beacon tim %d\n",
+ le16_to_cpu(priv->rxon_timing.beacon_interval),
+ le32_to_cpu(priv->rxon_timing.beacon_init_val),
+ le16_to_cpu(priv->rxon_timing.atim_window));
+}
+
+static int iwl_scan_initiate(struct iwl_priv *priv)
+{
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
+ IWL_ERROR("APs don't scan.\n");
+ return 0;
+ }
+
+ if (!iwl_is_ready_rf(priv)) {
+ IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
+ return -EIO;
+ }
+
+ if (test_bit(STATUS_SCANNING, &priv->status)) {
+ IWL_DEBUG_SCAN("Scan already in progress.\n");
+ return -EAGAIN;
+ }
+
+ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_SCAN("Scan request while abort pending. "
+ "Queuing.\n");
+ return -EAGAIN;
+ }
+
+ IWL_DEBUG_INFO("Starting scan...\n");
+ priv->scan_bands = 2;
+ set_bit(STATUS_SCANNING, &priv->status);
+ priv->scan_start = jiffies;
+ priv->scan_pass_start = priv->scan_start;
+
+ queue_work(priv->workqueue, &priv->request_scan);
+
+ return 0;
+}
+
+static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
+{
+ struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+
+ if (hw_decrypt)
+ rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
+ else
+ rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
+
+ return 0;
+}
+
+static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
+{
+ if (phymode == MODE_IEEE80211A) {
+ priv->staging_rxon.flags &=
+ ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
+ | RXON_FLG_CCK_MSK);
+ priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
+ } else {
+ /* Copied from iwl_bg_post_associate() */
+ if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
+ priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
+ else
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+ priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
+ priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
+ priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
+ }
+}
+
+/*
+ * initilize rxon structure with default values fromm eeprom
+ */
+static void iwl_connection_init_rx_config(struct iwl_priv *priv)
+{
+ const struct iwl_channel_info *ch_info;
+
+ memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
+
+ switch (priv->iw_mode) {
+ case IEEE80211_IF_TYPE_AP:
+ priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
+ break;
+
+ case IEEE80211_IF_TYPE_STA:
+ priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
+ priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
+ break;
+
+ case IEEE80211_IF_TYPE_IBSS:
+ priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
+ priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
+ priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
+ RXON_FILTER_ACCEPT_GRP_MSK;
+ break;
+
+ case IEEE80211_IF_TYPE_MNTR:
+ priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
+ priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
+ RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
+ break;
+ }
+
+#if 0
+ /* TODO: Figure out when short_preamble would be set and cache from
+ * that */
+ if (!hw_to_local(priv->hw)->short_preamble)
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+ else
+ priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+#endif
+
+ ch_info = iwl_get_channel_info(priv, priv->phymode,
+ le16_to_cpu(priv->staging_rxon.channel));
+
+ if (!ch_info)
+ ch_info = &priv->channel_info[0];
+
+ /*
+ * in some case A channels are all non IBSS
+ * in this case force B/G channel
+ */
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
+ !(is_channel_ibss(ch_info)))
+ ch_info = &priv->channel_info[0];
+
+ priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
+ if (is_channel_a_band(ch_info))
+ priv->phymode = MODE_IEEE80211A;
+ else
+ priv->phymode = MODE_IEEE80211G;
+
+ iwl_set_flags_for_phymode(priv, priv->phymode);
+
+ priv->staging_rxon.ofdm_basic_rates =
+ (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
+ priv->staging_rxon.cck_basic_rates =
+ (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
+
+ priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
+ RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
+ memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
+ memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
+ priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
+ priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
+ iwl4965_set_rxon_chain(priv);
+}
+
+static int iwl_set_mode(struct iwl_priv *priv, int mode)
+{
+ if (!iwl_is_ready_rf(priv))
+ return -EAGAIN;
+
+ if (mode == IEEE80211_IF_TYPE_IBSS) {
+ const struct iwl_channel_info *ch_info;
+
+ ch_info = iwl_get_channel_info(priv,
+ priv->phymode,
+ le16_to_cpu(priv->staging_rxon.channel));
+
+ if (!ch_info || !is_channel_ibss(ch_info)) {
+ IWL_ERROR("channel %d not IBSS channel\n",
+ le16_to_cpu(priv->staging_rxon.channel));
+ return -EINVAL;
+ }
+ }
+
+ cancel_delayed_work(&priv->scan_check);
+ if (iwl_scan_cancel_timeout(priv, 100)) {
+ IWL_WARNING("Aborted scan still in progress after 100ms\n");
+ IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
+ return -EAGAIN;
+ }
+
+ priv->iw_mode = mode;
+
+ iwl_connection_init_rx_config(priv);
+ memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
+
+ iwl_clear_stations_table(priv);
+
+ iwl_commit_rxon(priv);
+
+ return 0;
+}
+
+static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
+ struct ieee80211_tx_control *ctl,
+ struct iwl_cmd *cmd,
+ struct sk_buff *skb_frag,
+ int last_frag)
+{
+ struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
+
+ switch (keyinfo->alg) {
+ case ALG_CCMP:
+ cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
+ memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
+ IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
+ break;
+
+ case ALG_TKIP:
+#if 0
+ cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
+
+ if (last_frag)
+ memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
+ 8);
+ else
+ memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
+#endif
+ break;
+
+ case ALG_WEP:
+ cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
+ (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
+
+ if (keyinfo->keylen == 13)
+ cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
+
+ memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
+
+ IWL_DEBUG_TX("Configuring packet for WEP encryption "
+ "with key %d\n", ctl->key_idx);
+ break;
+
+ case ALG_NONE:
+ IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
+ break;
+
+ default:
+ printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
+ break;
+ }
+}
+
+/*
+ * handle build REPLY_TX command notification.
+ */
+static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
+ struct iwl_cmd *cmd,
+ struct ieee80211_tx_control *ctrl,
+ struct ieee80211_hdr *hdr,
+ int is_unicast, u8 std_id)
+{
+ __le16 *qc;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ __le32 tx_flags = cmd->cmd.tx.tx_flags;
+
+ cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
+ if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
+ tx_flags |= TX_CMD_FLG_ACK_MSK;
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
+ tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+ if (ieee80211_is_probe_response(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;
+ }
+
+ cmd->cmd.tx.sta_id = std_id;
+ if (ieee80211_get_morefrag(hdr))
+ tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
+
+ qc = ieee80211_get_qos_ctrl(hdr);
+ if (qc) {
+ cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
+ tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
+ } else
+ tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+
+ if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
+ tx_flags |= TX_CMD_FLG_RTS_MSK;
+ tx_flags &= ~TX_CMD_FLG_CTS_MSK;
+ } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
+ tx_flags &= ~TX_CMD_FLG_RTS_MSK;
+ tx_flags |= TX_CMD_FLG_CTS_MSK;
+ }
+
+ if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
+ tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
+
+ tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+ if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
+ (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
+ cmd->cmd.tx.timeout.pm_frame_timeout =
+ cpu_to_le16(3);
+ else
+ cmd->cmd.tx.timeout.pm_frame_timeout =
+ cpu_to_le16(2);
+ } else
+ cmd->cmd.tx.timeout.pm_frame_timeout = 0;
+
+ cmd->cmd.tx.driver_txop = 0;
+ cmd->cmd.tx.tx_flags = tx_flags;
+ cmd->cmd.tx.next_frame_len = 0;
+}
+
+static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
+{
+ int sta_id;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+
+ /* If this frame is broadcast or not data then use the broadcast
+ * station id */
+ if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
+ is_multicast_ether_addr(hdr->addr1))
+ return priv->hw_setting.bcast_sta_id;
+
+ switch (priv->iw_mode) {
+
+ /* If this frame is part of a BSS network (we're a station), then
+ * we use the AP's station id */
+ case IEEE80211_IF_TYPE_STA:
+ return IWL_AP_ID;
+
+ /* If we are an AP, then find the station, or use BCAST */
+ case IEEE80211_IF_TYPE_AP:
+ sta_id = iwl_hw_find_station(priv, hdr->addr1);
+ if (sta_id != IWL_INVALID_STATION)
+ return sta_id;
+ return priv->hw_setting.bcast_sta_id;
+
+ /* If this frame is part of a IBSS network, then we use the
+ * target specific station id */
+ case IEEE80211_IF_TYPE_IBSS:
+ sta_id = iwl_hw_find_station(priv, hdr->addr1);
+ if (sta_id != IWL_INVALID_STATION)
+ return sta_id;
+
+ sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
+
+ if (sta_id != IWL_INVALID_STATION)
+ return sta_id;
+
+ IWL_DEBUG_DROP("Station " MAC_FMT " not in station map. "
+ "Defaulting to broadcast...\n",
+ MAC_ARG(hdr->addr1));
+ iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
+ return priv->hw_setting.bcast_sta_id;
+
+ default:
+ IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
+ return priv->hw_setting.bcast_sta_id;
+ }
+}
+
+/*
+ * start REPLY_TX command process
+ */
+static int iwl_tx_skb(struct iwl_priv *priv,
+ struct sk_buff *skb, struct ieee80211_tx_control *ctl)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct iwl_tfd_frame *tfd;
+ u32 *control_flags;
+ int txq_id = ctl->queue;
+ struct iwl_tx_queue *txq = NULL;
+ struct iwl_queue *q = NULL;
+ dma_addr_t phys_addr;
+ dma_addr_t txcmd_phys;
+ struct iwl_cmd *out_cmd = NULL;
+ u16 len, idx, len_org;
+ u8 id, hdr_len, unicast;
+ u8 sta_id;
+ u16 seq_number = 0;
+ u16 fc;
+ __le16 *qc;
+ u8 wait_write_ptr = 0;
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (iwl_is_rfkill(priv)) {
+ IWL_DEBUG_DROP("Dropping - RF KILL\n");
+ goto drop_unlock;
+ }
+
+ if (!priv->interface_id) {
+ IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
+ goto drop_unlock;
+ }
+
+ if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
+ IWL_ERROR("ERROR: No TX rate available.\n");
+ goto drop_unlock;
+ }
+
+ unicast = !is_multicast_ether_addr(hdr->addr1);
+ id = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (ieee80211_is_auth(fc))
+ IWL_DEBUG_TX("Sending AUTH frame\n");
+ else if (ieee80211_is_assoc_request(fc))
+ IWL_DEBUG_TX("Sending ASSOC frame\n");
+ else if (ieee80211_is_reassoc_request(fc))
+ IWL_DEBUG_TX("Sending REASSOC frame\n");
+#endif
+
+ if (!iwl_is_associated(priv) &&
+ ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
+ IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
+ goto drop_unlock;
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ hdr_len = ieee80211_get_hdrlen(fc);
+ sta_id = iwl_get_sta_id(priv, hdr);
+ if (sta_id == IWL_INVALID_STATION) {
+ IWL_DEBUG_DROP("Dropping - INVALID STATION: " MAC_FMT "\n",
+ MAC_ARG(hdr->addr1));
+ goto drop;
+ }
+
+ IWL_DEBUG_RATE("station Id %d\n", sta_id);
+
+ qc = ieee80211_get_qos_ctrl(hdr);
+ if (qc) {
+ u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
+ seq_number = priv->stations[sta_id].tid[tid].seq_number &
+ IEEE80211_SCTL_SEQ;
+ hdr->seq_ctrl = cpu_to_le16(seq_number) |
+ (hdr->seq_ctrl &
+ __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
+ seq_number += 0x10;
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ /* aggregation is on for this <sta,tid> */
+ if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
+ txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+ }
+ txq = &priv->txq[txq_id];
+ q = &txq->q;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ tfd = &txq->bd[q->first_empty];
+ memset(tfd, 0, sizeof(*tfd));
+ control_flags = (u32 *) tfd;
+ idx = get_cmd_index(q, q->first_empty, 0);
+
+ memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
+ txq->txb[q->first_empty].skb[0] = skb;
+ memcpy(&(txq->txb[q->first_empty].status.control),
+ ctl, sizeof(struct ieee80211_tx_control));
+ out_cmd = &txq->cmd[idx];
+ memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
+ memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
+ out_cmd->hdr.cmd = REPLY_TX;
+ out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
+ INDEX_TO_SEQ(q->first_empty)));
+ /* copy frags header */
+ memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
+
+ /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
+ len = priv->hw_setting.tx_cmd_len +
+ sizeof(struct iwl_cmd_header) + hdr_len;
+
+ len_org = len;
+ len = (len + 3) & ~3;
+
+ if (len_org != len)
+ len_org = 1;
+ else
+ len_org = 0;
+
+ txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
+ offsetof(struct iwl_cmd, hdr);
+
+ iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
+
+ if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
+ iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
+
+ /* 802.11 null functions have no payload... */
+ len = skb->len - hdr_len;
+ if (len) {
+ phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
+ len, PCI_DMA_TODEVICE);
+ iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
+ }
+
+ if (len_org)
+ out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
+
+ len = (u16)skb->len;
+ out_cmd->cmd.tx.len = cpu_to_le16(len);
+
+ /* TODO need this for burst mode later on */
+ iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
+
+ /* set is_hcca to 0; it probably will never be implemented */
+ iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
+
+ iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
+ hdr, hdr_len, ctl, NULL);
+
+ if (!ieee80211_get_morefrag(hdr)) {
+ txq->need_update = 1;
+ if (qc) {
+ u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
+ priv->stations[sta_id].tid[tid].seq_number = seq_number;
+ }
+ } else {
+ wait_write_ptr = 1;
+ txq->need_update = 0;
+ }
+
+ iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
+ sizeof(out_cmd->cmd.tx));
+
+ iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
+ ieee80211_get_hdrlen(fc));
+
+ iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
+
+ q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
+ rc = iwl_tx_queue_update_write_ptr(priv, txq);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (rc)
+ return rc;
+
+ if ((iwl_queue_space(q) < q->high_mark)
+ && priv->mac80211_registered) {
+ if (wait_write_ptr) {
+ spin_lock_irqsave(&priv->lock, flags);
+ txq->need_update = 1;
+ iwl_tx_queue_update_write_ptr(priv, txq);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+ ieee80211_stop_queue(priv->hw, ctl->queue);
+ }
+
+ return 0;
+
+drop_unlock:
+ spin_unlock_irqrestore(&priv->lock, flags);
+drop:
+ return -1;
+}
+
+static void iwl_set_rate(struct iwl_priv *priv)
+{
+ const struct ieee80211_hw_mode *hw = NULL;
+ struct ieee80211_rate *rate;
+ int i;
+
+ hw = iwl_get_hw_mode(priv, priv->phymode);
+
+ priv->active_rate = 0;
+ priv->active_rate_basic = 0;
+
+ IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
+ hw->mode == MODE_IEEE80211A ?
+ 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
+
+ for (i = 0; i < hw->num_rates; i++) {
+ rate = &(hw->rates[i]);
+ if ((rate->val < IWL_RATE_COUNT) &&
+ (rate->flags & IEEE80211_RATE_SUPPORTED)) {
+ IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
+ rate->val, iwl_rates[rate->val].plcp,
+ (rate->flags & IEEE80211_RATE_BASIC) ?
+ "*" : "");
+ priv->active_rate |= (1 << rate->val);
+ if (rate->flags & IEEE80211_RATE_BASIC)
+ priv->active_rate_basic |= (1 << rate->val);
+ } else
+ IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
+ rate->val, iwl_rates[rate->val].plcp);
+ }
+
+ IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
+ priv->active_rate, priv->active_rate_basic);
+
+ /*
+ * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
+ * otherwise set it to the default of all CCK rates and 6, 12, 24 for
+ * OFDM
+ */
+ if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
+ priv->staging_rxon.cck_basic_rates =
+ ((priv->active_rate_basic &
+ IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
+ else
+ priv->staging_rxon.cck_basic_rates =
+ (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
+
+ if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
+ priv->staging_rxon.ofdm_basic_rates =
+ ((priv->active_rate_basic &
+ (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
+ IWL_FIRST_OFDM_RATE) & 0xFF;
+ else
+ priv->staging_rxon.ofdm_basic_rates =
+ (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
+}
+
+static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
+{
+ unsigned long flags;
+
+ if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
+ return;
+
+ IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
+ disable_radio ? "OFF" : "ON");
+
+ if (disable_radio) {
+ iwl_scan_cancel(priv);
+ /* FIXME: This is a workaround for AP */
+ if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+ CSR_UCODE_SW_BIT_RFKILL);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
+ set_bit(STATUS_RF_KILL_SW, &priv->status);
+ }
+ return;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+
+ clear_bit(STATUS_RF_KILL_SW, &priv->status);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* wake up ucode */
+ msleep(10);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_read32(priv, CSR_UCODE_DRV_GP1);
+ if (!iwl_grab_restricted_access(priv))
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
+ IWL_DEBUG_RF_KILL("Can not turn radio back on - "
+ "disabled by HW switch\n");
+ return;
+ }
+
+ queue_work(priv->workqueue, &priv->restart);
+ return;
+}
+
+void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
+ u32 decrypt_res, struct ieee80211_rx_status *stats)
+{
+ u16 fc =
+ le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
+
+ if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
+ return;
+
+ if (!(fc & IEEE80211_FCTL_PROTECTED))
+ return;
+
+ IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
+ switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
+ case RX_RES_STATUS_SEC_TYPE_TKIP:
+ if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+ RX_RES_STATUS_BAD_ICV_MIC)
+ stats->flag |= RX_FLAG_MMIC_ERROR;
+ case RX_RES_STATUS_SEC_TYPE_WEP:
+ case RX_RES_STATUS_SEC_TYPE_CCMP:
+ if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+ RX_RES_STATUS_DECRYPT_OK) {
+ IWL_DEBUG_RX("hw decrypt successfully!!!\n");
+ stats->flag |= RX_FLAG_DECRYPTED;
+ }
+ break;
+
+ default:
+ break;
+ }
+}
+
+void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb,
+ void *data, short len,
+ struct ieee80211_rx_status *stats,
+ u16 phy_flags)
+{
+ struct iwl_rt_rx_hdr *iwl_rt;
+
+ /* First cache any information we need before we overwrite
+ * the information provided in the skb from the hardware */
+ s8 signal = stats->ssi;
+ s8 noise = 0;
+ int rate = stats->rate;
+ u64 tsf = stats->mactime;
+ __le16 phy_flags_hw = cpu_to_le16(phy_flags);
+
+ /* We received data from the HW, so stop the watchdog */
+ if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
+ IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
+ return;
+ }
+
+ /* copy the frame data to write after where the radiotap header goes */
+ iwl_rt = (void *)rxb->skb->data;
+ memmove(iwl_rt->payload, data, len);
+
+ iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
+ iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
+
+ /* total header + data */
+ iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
+
+ /* Set the size of the skb to the size of the frame */
+ skb_put(rxb->skb, sizeof(*iwl_rt) + len);
+
+ /* Big bitfield of all the fields we provide in radiotap */
+ iwl_rt->rt_hdr.it_present =
+ cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
+ (1 << IEEE80211_RADIOTAP_FLAGS) |
+ (1 << IEEE80211_RADIOTAP_RATE) |
+ (1 << IEEE80211_RADIOTAP_CHANNEL) |
+ (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
+ (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
+ (1 << IEEE80211_RADIOTAP_ANTENNA));
+
+ /* Zero the flags, we'll add to them as we go */
+ iwl_rt->rt_flags = 0;
+
+ iwl_rt->rt_tsf = cpu_to_le64(tsf);
+
+ /* Convert to dBm */
+ iwl_rt->rt_dbmsignal = signal;
+ iwl_rt->rt_dbmnoise = noise;
+
+ /* Convert the channel frequency and set the flags */
+ iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
+ if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
+ iwl_rt->rt_chbitmask =
+ cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
+ else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
+ iwl_rt->rt_chbitmask =
+ cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
+ else /* 802.11g */
+ iwl_rt->rt_chbitmask =
+ cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
+
+ rate = iwl_rate_index_from_plcp(rate);
+ if (rate == -1)
+ iwl_rt->rt_rate = 0;
+ else
+ iwl_rt->rt_rate = iwl_rates[rate].ieee;
+
+ /* antenna number */
+ iwl_rt->rt_antenna =
+ le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
+
+ /* set the preamble flag if we have it */
+ if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+ iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
+
+ IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
+
+ stats->flag |= RX_FLAG_RADIOTAP;
+ ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
+ rxb->skb = NULL;
+}
+
+
+#define IWL_PACKET_RETRY_TIME HZ
+
+int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
+{
+ u16 sc = le16_to_cpu(header->seq_ctrl);
+ u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
+ u16 frag = sc & IEEE80211_SCTL_FRAG;
+ u16 *last_seq, *last_frag;
+ unsigned long *last_time;
+
+ switch (priv->iw_mode) {
+ case IEEE80211_IF_TYPE_IBSS:{
+ struct list_head *p;
+ struct iwl_ibss_seq *entry = NULL;
+ u8 *mac = header->addr2;
+ int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
+
+ __list_for_each(p, &priv->ibss_mac_hash[index]) {
+ entry =
+ list_entry(p, struct iwl_ibss_seq, list);
+ if (!compare_ether_addr(entry->mac, mac))
+ break;
+ }
+ if (p == &priv->ibss_mac_hash[index]) {
+ entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+ if (!entry) {
+ IWL_ERROR
+ ("Cannot malloc new mac entry\n");
+ return 0;
+ }
+ memcpy(entry->mac, mac, ETH_ALEN);
+ entry->seq_num = seq;
+ entry->frag_num = frag;
+ entry->packet_time = jiffies;
+ list_add(&entry->list,
+ &priv->ibss_mac_hash[index]);
+ return 0;
+ }
+ last_seq = &entry->seq_num;
+ last_frag = &entry->frag_num;
+ last_time = &entry->packet_time;
+ break;
+ }
+ case IEEE80211_IF_TYPE_STA:
+ last_seq = &priv->last_seq_num;
+ last_frag = &priv->last_frag_num;
+ last_time = &priv->last_packet_time;
+ break;
+ default:
+ return 0;
+ }
+ if ((*last_seq == seq) &&
+ time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
+ if (*last_frag == frag)
+ goto drop;
+ if (*last_frag + 1 != frag)
+ /* out-of-order fragment */
+ goto drop;
+ } else
+ *last_seq = seq;
+
+ *last_frag = frag;
+ *last_time = jiffies;
+ return 0;
+
+ drop:
+ return 1;
+}
+
+#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
+
+#include "iwl-spectrum.h"
+
+#define BEACON_TIME_MASK_LOW 0x00FFFFFF
+#define BEACON_TIME_MASK_HIGH 0xFF000000
+#define TIME_UNIT 1024
+
+/*
+ * extended beacon time format
+ * time in usec will be changed into a 32-bit value in 8:24 format
+ * the high 1 byte is the beacon counts
+ * the lower 3 bytes is the time in usec within one beacon interval
+ */
+
+static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
+{
+ u32 quot;
+ u32 rem;
+ u32 interval = beacon_interval * 1024;
+
+ if (!interval || !usec)
+ return 0;
+
+ quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
+ rem = (usec % interval) & BEACON_TIME_MASK_LOW;
+
+ return (quot << 24) + rem;
+}
+
+/* base is usually what we get from ucode with each received frame,
+ * the same as HW timer counter counting down
+ */
+
+static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
+{
+ u32 base_low = base & BEACON_TIME_MASK_LOW;
+ u32 addon_low = addon & BEACON_TIME_MASK_LOW;
+ u32 interval = beacon_interval * TIME_UNIT;
+ u32 res = (base & BEACON_TIME_MASK_HIGH) +
+ (addon & BEACON_TIME_MASK_HIGH);
+
+ if (base_low > addon_low)
+ res += base_low - addon_low;
+ else if (base_low < addon_low) {
+ res += interval + base_low - addon_low;
+ res += (1 << 24);
+ } else
+ res += (1 << 24);
+
+ return cpu_to_le32(res);
+}
+
+static int iwl_get_measurement(struct iwl_priv *priv,
+ struct ieee80211_measurement_params *params,
+ u8 type)
+{
+ struct iwl_spectrum_cmd spectrum;
+ struct iwl_rx_packet *res;
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
+ .data = (void *)&spectrum,
+ .meta.flags = CMD_WANT_SKB,
+ };
+ u32 add_time = le64_to_cpu(params->start_time);
+ int rc;
+ int spectrum_resp_status;
+ int duration = le16_to_cpu(params->duration);
+
+ if (iwl_is_associated(priv))
+ add_time =
+ iwl_usecs_to_beacons(
+ le64_to_cpu(params->start_time) - priv->last_tsf,
+ le16_to_cpu(priv->rxon_timing.beacon_interval));
+
+ memset(&spectrum, 0, sizeof(spectrum));
+
+ spectrum.channel_count = cpu_to_le16(1);
+ spectrum.flags =
+ RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
+ spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
+ cmd.len = sizeof(spectrum);
+ spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
+
+ if (iwl_is_associated(priv))
+ spectrum.start_time =
+ iwl_add_beacon_time(priv->last_beacon_time,
+ add_time,
+ le16_to_cpu(priv->rxon_timing.beacon_interval));
+ else
+ spectrum.start_time = 0;
+
+ spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
+ spectrum.channels[0].channel = params->channel;
+ spectrum.channels[0].type = type;
+ if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
+ spectrum.flags |= RXON_FLG_BAND_24G_MSK |
+ RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
+
+ rc = iwl_send_cmd_sync(priv, &cmd);
+ if (rc)
+ return rc;
+
+ res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
+ if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+ IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
+ rc = -EIO;
+ }
+
+ spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
+ switch (spectrum_resp_status) {
+ case 0: /* Command will be handled */
+ if (res->u.spectrum.id != 0xff) {
+ IWL_DEBUG_INFO
+ ("Replaced existing measurement: %d\n",
+ res->u.spectrum.id);
+ priv->measurement_status &= ~MEASUREMENT_READY;
+ }
+ priv->measurement_status |= MEASUREMENT_ACTIVE;
+ rc = 0;
+ break;
+
+ case 1: /* Command will not be handled */
+ rc = -EAGAIN;
+ break;
+ }
+
+ dev_kfree_skb_any(cmd.meta.u.skb);
+
+ return rc;
+}
+#endif
+
+static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
+ struct iwl_tx_info *tx_sta)
+{
+
+ tx_sta->status.ack_signal = 0;
+ tx_sta->status.excessive_retries = 0;
+ tx_sta->status.queue_length = 0;
+ tx_sta->status.queue_number = 0;
+
+ if (in_interrupt())
+ ieee80211_tx_status_irqsafe(priv->hw,
+ tx_sta->skb[0], &(tx_sta->status));
+ else
+ ieee80211_tx_status(priv->hw,
+ tx_sta->skb[0], &(tx_sta->status));
+
+ tx_sta->skb[0] = NULL;
+}
+
+/**
+ * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
+ *
+ * When FW advances 'R' index, all entries between old and
+ * new 'R' index need to be reclaimed. As result, some free space
+ * forms. If there is enough free space (> low mark), wake Tx queue.
+ */
+int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
+{
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct iwl_queue *q = &txq->q;
+ int nfreed = 0;
+
+ if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
+ IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
+ "is out of range [0-%d] %d %d.\n", txq_id,
+ index, q->n_bd, q->first_empty, q->last_used);
+ return 0;
+ }
+
+ for (index = iwl_queue_inc_wrap(index, q->n_bd);
+ q->last_used != index;
+ q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
+ if (txq_id != IWL_CMD_QUEUE_NUM) {
+ iwl_txstatus_to_ieee(priv,
+ &(txq->txb[txq->q.last_used]));
+ iwl_hw_txq_free_tfd(priv, txq);
+ } else if (nfreed > 1) {
+ IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
+ q->first_empty, q->last_used);
+ queue_work(priv->workqueue, &priv->restart);
+ }
+ nfreed++;
+ }
+
+ if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
+ (txq_id != IWL_CMD_QUEUE_NUM) &&
+ priv->mac80211_registered)
+ ieee80211_wake_queue(priv->hw, txq_id);
+
+
+ return nfreed;
+}
+
+static int iwl_is_tx_success(u32 status)
+{
+ status &= TX_STATUS_MSK;
+ return (status == TX_STATUS_SUCCESS)
+ || (status == TX_STATUS_DIRECT_DONE);
+}
+
+/******************************************************************************
+ *
+ * Generic RX handler implementations
+ *
+ ******************************************************************************/
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+
+static inline int iwl_get_ra_sta_id(struct iwl_priv *priv,
+ struct ieee80211_hdr *hdr)
+{
+ if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
+ return IWL_AP_ID;
+ else {
+ u8 *da = ieee80211_get_DA(hdr);
+ return iwl_hw_find_station(priv, da);
+ }
+}
+
+static struct ieee80211_hdr *iwl_tx_queue_get_hdr(
+ struct iwl_priv *priv, int txq_id, int idx)
+{
+ if (priv->txq[txq_id].txb[idx].skb[0])
+ return (struct ieee80211_hdr *)priv->txq[txq_id].
+ txb[idx].skb[0]->data;
+ return NULL;
+}
+
+static inline u32 iwl_get_scd_ssn(struct iwl_tx_resp *tx_resp)
+{
+ __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
+ tx_resp->frame_count);
+ return le32_to_cpu(*scd_ssn) & MAX_SN;
+
+}
+static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
+ struct iwl_ht_agg *agg,
+ struct iwl_tx_resp *tx_resp,
+ u16 start_idx)
+{
+ u32 status;
+ __le32 *frame_status = &tx_resp->status;
+ struct ieee80211_tx_status *tx_status = NULL;
+ struct ieee80211_hdr *hdr = NULL;
+ int i, sh;
+ int txq_id, idx;
+ u16 seq;
+
+ if (agg->wait_for_ba)
+ IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
+
+ agg->frame_count = tx_resp->frame_count;
+ agg->start_idx = start_idx;
+ agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
+ agg->bitmap0 = agg->bitmap1 = 0;
+
+ if (agg->frame_count == 1) {
+ struct iwl_tx_queue *txq ;
+ status = le32_to_cpu(frame_status[0]);
+
+ txq_id = agg->txq_id;
+ txq = &priv->txq[txq_id];
+ /* FIXME: code repetition */
+ IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
+ agg->frame_count, agg->start_idx);
+
+ tx_status = &(priv->txq[txq_id].txb[txq->q.last_used].status);
+ tx_status->retry_count = tx_resp->failure_frame;
+ tx_status->queue_number = status & 0xff;
+ tx_status->queue_length = tx_resp->bt_kill_count;
+ tx_status->queue_length |= tx_resp->failure_rts;
+
+ tx_status->flags = iwl_is_tx_success(status)?
+ IEEE80211_TX_STATUS_ACK : 0;
+ tx_status->control.tx_rate =
+ iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
+ /* FIXME: code repetition end */
+
+ IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
+ status & 0xff, tx_resp->failure_frame);
+ IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
+ iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags));
+
+ agg->wait_for_ba = 0;
+ } else {
+ u64 bitmap = 0;
+ int start = agg->start_idx;
+
+ for (i = 0; i < agg->frame_count; i++) {
+ u16 sc;
+ status = le32_to_cpu(frame_status[i]);
+ seq = status >> 16;
+ idx = SEQ_TO_INDEX(seq);
+ txq_id = SEQ_TO_QUEUE(seq);
+
+ if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
+ AGG_TX_STATE_ABORT_MSK))
+ continue;
+
+ IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
+ agg->frame_count, txq_id, idx);
+
+ hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
+
+ sc = le16_to_cpu(hdr->seq_ctrl);
+ if (idx != (SEQ_TO_SN(sc) & 0xff)) {
+ IWL_ERROR("BUG_ON idx doesn't match seq control"
+ " idx=%d, seq_idx=%d, seq=%d\n",
+ idx, SEQ_TO_SN(sc),
+ hdr->seq_ctrl);
+ return -1;
+ }
+
+ IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
+ i, idx, SEQ_TO_SN(sc));
+
+ sh = idx - start;
+ if (sh > 64) {
+ sh = (start - idx) + 0xff;
+ bitmap = bitmap << sh;
+ sh = 0;
+ start = idx;
+ } else if (sh < -64)
+ sh = 0xff - (start - idx);
+ else if (sh < 0) {
+ sh = start - idx;
+ start = idx;
+ bitmap = bitmap << sh;
+ sh = 0;
+ }
+ bitmap |= (1 << sh);
+ IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
+ start, (u32)(bitmap & 0xFFFFFFFF));
+ }
+
+ agg->bitmap0 = bitmap & 0xFFFFFFFF;
+ agg->bitmap1 = bitmap >> 32;
+ agg->start_idx = start;
+ agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
+ IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
+ agg->frame_count, agg->start_idx,
+ agg->bitmap0);
+
+ if (bitmap)
+ agg->wait_for_ba = 1;
+ }
+ return 0;
+}
+#endif
+#endif
+
+static void iwl_rx_reply_tx(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ int txq_id = SEQ_TO_QUEUE(sequence);
+ int index = SEQ_TO_INDEX(sequence);
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct ieee80211_tx_status *tx_status;
+ struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
+ u32 status = le32_to_cpu(tx_resp->status);
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ int tid, sta_id;
+#endif
+#endif
+
+ if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
+ IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
+ "is out of range [0-%d] %d %d\n", txq_id,
+ index, txq->q.n_bd, txq->q.first_empty,
+ txq->q.last_used);
+ return;
+ }
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ if (txq->sched_retry) {
+ const u32 scd_ssn = iwl_get_scd_ssn(tx_resp);
+ struct ieee80211_hdr *hdr =
+ iwl_tx_queue_get_hdr(priv, txq_id, index);
+ struct iwl_ht_agg *agg = NULL;
+ __le16 *qc = ieee80211_get_qos_ctrl(hdr);
+
+ if (qc == NULL) {
+ IWL_ERROR("BUG_ON qc is null!!!!\n");
+ return;
+ }
+
+ tid = le16_to_cpu(*qc) & 0xf;
+
+ sta_id = iwl_get_ra_sta_id(priv, hdr);
+ if (unlikely(sta_id == IWL_INVALID_STATION)) {
+ IWL_ERROR("Station not known for\n");
+ return;
+ }
+
+ agg = &priv->stations[sta_id].tid[tid].agg;
+
+ iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
+
+ if ((tx_resp->frame_count == 1) &&
+ !iwl_is_tx_success(status)) {
+ /* TODO: send BAR */
+ }
+
+ if ((txq->q.last_used != (scd_ssn & 0xff))) {
+ index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
+ IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
+ "%d index %d\n", scd_ssn , index);
+ iwl_tx_queue_reclaim(priv, txq_id, index);
+ }
+ } else {
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+ tx_status = &(txq->txb[txq->q.last_used].status);
+
+ tx_status->retry_count = tx_resp->failure_frame;
+ tx_status->queue_number = status;
+ tx_status->queue_length = tx_resp->bt_kill_count;
+ tx_status->queue_length |= tx_resp->failure_rts;
+
+ tx_status->flags =
+ iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
+
+ tx_status->control.tx_rate =
+ iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
+
+ IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
+ "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
+ status, le32_to_cpu(tx_resp->rate_n_flags),
+ tx_resp->failure_frame);
+
+ IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
+ if (index != -1)
+ iwl_tx_queue_reclaim(priv, txq_id, index);
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ }
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+ if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
+ IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
+}
+
+
+static void iwl_rx_reply_alive(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_alive_resp *palive;
+ struct delayed_work *pwork;
+
+ palive = &pkt->u.alive_frame;
+
+ IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
+ "0x%01X 0x%01X\n",
+ palive->is_valid, palive->ver_type,
+ palive->ver_subtype);
+
+ if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
+ IWL_DEBUG_INFO("Initialization Alive received.\n");
+ memcpy(&priv->card_alive_init,
+ &pkt->u.alive_frame,
+ sizeof(struct iwl_init_alive_resp));
+ pwork = &priv->init_alive_start;
+ } else {
+ IWL_DEBUG_INFO("Runtime Alive received.\n");
+ memcpy(&priv->card_alive, &pkt->u.alive_frame,
+ sizeof(struct iwl_alive_resp));
+ pwork = &priv->alive_start;
+ }
+
+ /* We delay the ALIVE response by 5ms to
+ * give the HW RF Kill time to activate... */
+ if (palive->is_valid == UCODE_VALID_OK)
+ queue_delayed_work(priv->workqueue, pwork,
+ msecs_to_jiffies(5));
+ else
+ IWL_WARNING("uCode did not respond OK.\n");
+}
+
+static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+
+ IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
+ return;
+}
+
+static void iwl_rx_reply_error(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+
+ IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
+ "seq 0x%04X ser 0x%08X\n",
+ le32_to_cpu(pkt->u.err_resp.error_type),
+ get_cmd_string(pkt->u.err_resp.cmd_id),
+ pkt->u.err_resp.cmd_id,
+ le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
+ le32_to_cpu(pkt->u.err_resp.error_info));
+}
+
+#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
+
+static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
+ struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
+ IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
+ le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
+ rxon->channel = csa->channel;
+ priv->staging_rxon.channel = csa->channel;
+}
+
+static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
+
+ if (!report->state) {
+ IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
+ "Spectrum Measure Notification: Start\n");
+ return;
+ }
+
+ memcpy(&priv->measure_report, report, sizeof(*report));
+ priv->measurement_status |= MEASUREMENT_READY;
+#endif
+}
+
+static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
+ IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
+ sleep->pm_sleep_mode, sleep->pm_wakeup_src);
+#endif
+}
+
+static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
+ "notification for %s:\n",
+ le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
+ iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
+}
+
+static void iwl_bg_beacon_update(struct work_struct *work)
+{
+ struct iwl_priv *priv =
+ container_of(work, struct iwl_priv, beacon_update);
+ struct sk_buff *beacon;
+
+ /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
+ beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
+
+ if (!beacon) {
+ IWL_ERROR("update beacon failed\n");
+ return;
+ }
+
+ mutex_lock(&priv->mutex);
+ /* new beacon skb is allocated every time; dispose previous.*/
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+
+ priv->ibss_beacon = beacon;
+ mutex_unlock(&priv->mutex);
+
+ iwl_send_beacon_cmd(priv);
+}
+
+static void iwl_rx_beacon_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
+ u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
+
+ IWL_DEBUG_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
+
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
+ (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
+ queue_work(priv->workqueue, &priv->beacon_update);
+}
+
+/* Service response to REPLY_SCAN_CMD (0x80) */
+static void iwl_rx_reply_scan(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_scanreq_notification *notif =
+ (struct iwl_scanreq_notification *)pkt->u.raw;
+
+ IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
+#endif
+}
+
+/* Service SCAN_START_NOTIFICATION (0x82) */
+static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_scanstart_notification *notif =
+ (struct iwl_scanstart_notification *)pkt->u.raw;
+ priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
+ IWL_DEBUG_SCAN("Scan start: "
+ "%d [802.11%s] "
+ "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
+ notif->channel,
+ notif->band ? "bg" : "a",
+ notif->tsf_high,
+ notif->tsf_low, notif->status, notif->beacon_timer);
+}
+
+/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
+static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_scanresults_notification *notif =
+ (struct iwl_scanresults_notification *)pkt->u.raw;
+
+ IWL_DEBUG_SCAN("Scan ch.res: "
+ "%d [802.11%s] "
+ "(TSF: 0x%08X:%08X) - %d "
+ "elapsed=%lu usec (%dms since last)\n",
+ notif->channel,
+ notif->band ? "bg" : "a",
+ le32_to_cpu(notif->tsf_high),
+ le32_to_cpu(notif->tsf_low),
+ le32_to_cpu(notif->statistics[0]),
+ le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
+ jiffies_to_msecs(elapsed_jiffies
+ (priv->last_scan_jiffies, jiffies)));
+
+ priv->last_scan_jiffies = jiffies;
+}
+
+/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
+static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
+
+ IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
+ scan_notif->scanned_channels,
+ scan_notif->tsf_low,
+ scan_notif->tsf_high, scan_notif->status);
+
+ /* The HW is no longer scanning */
+ clear_bit(STATUS_SCAN_HW, &priv->status);
+
+ /* The scan completion notification came in, so kill that timer... */
+ cancel_delayed_work(&priv->scan_check);
+
+ IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
+ (priv->scan_bands == 2) ? "2.4" : "5.2",
+ jiffies_to_msecs(elapsed_jiffies
+ (priv->scan_pass_start, jiffies)));
+
+ /* Remove this scanned band from the list
+ * of pending bands to scan */
+ priv->scan_bands--;
+
+ /* If a request to abort was given, or the scan did not succeed
+ * then we reset the scan state machine and terminate,
+ * re-queuing another scan if one has been requested */
+ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_INFO("Aborted scan completed.\n");
+ clear_bit(STATUS_SCAN_ABORTING, &priv->status);
+ } else {
+ /* If there are more bands on this scan pass reschedule */
+ if (priv->scan_bands > 0)
+ goto reschedule;
+ }
+
+ priv->last_scan_jiffies = jiffies;
+ IWL_DEBUG_INFO("Setting scan to off\n");
+
+ clear_bit(STATUS_SCANNING, &priv->status);
+
+ IWL_DEBUG_INFO("Scan took %dms\n",
+ jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
+
+ queue_work(priv->workqueue, &priv->scan_completed);
+
+ return;
+
+reschedule:
+ priv->scan_pass_start = jiffies;
+ queue_work(priv->workqueue, &priv->request_scan);
+}
+
+/* Handle notification from uCode that card's power state is changing
+ * due to software, hardware, or critical temperature RFKILL */
+static void iwl_rx_card_state_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
+ unsigned long status = priv->status;
+
+ IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
+ (flags & HW_CARD_DISABLED) ? "Kill" : "On",
+ (flags & SW_CARD_DISABLED) ? "Kill" : "On");
+
+ if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
+ RF_CARD_DISABLED)) {
+
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+
+ if (!iwl_grab_restricted_access(priv)) {
+ iwl_write_restricted(
+ priv, HBUS_TARG_MBX_C,
+ HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+
+ iwl_release_restricted_access(priv);
+ }
+
+ if (!(flags & RXON_CARD_DISABLED)) {
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+ if (!iwl_grab_restricted_access(priv)) {
+ iwl_write_restricted(
+ priv, HBUS_TARG_MBX_C,
+ HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+
+ iwl_release_restricted_access(priv);
+ }
+ }
+
+ if (flags & RF_CARD_DISABLED) {
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
+ CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
+ iwl_read32(priv, CSR_UCODE_DRV_GP1);
+ if (!iwl_grab_restricted_access(priv))
+ iwl_release_restricted_access(priv);
+ }
+ }
+
+ if (flags & HW_CARD_DISABLED)
+ set_bit(STATUS_RF_KILL_HW, &priv->status);
+ else
+ clear_bit(STATUS_RF_KILL_HW, &priv->status);
+
+
+ if (flags & SW_CARD_DISABLED)
+ set_bit(STATUS_RF_KILL_SW, &priv->status);
+ else
+ clear_bit(STATUS_RF_KILL_SW, &priv->status);
+
+ if (!(flags & RXON_CARD_DISABLED))
+ iwl_scan_cancel(priv);
+
+ if ((test_bit(STATUS_RF_KILL_HW, &status) !=
+ test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
+ (test_bit(STATUS_RF_KILL_SW, &status) !=
+ test_bit(STATUS_RF_KILL_SW, &priv->status)))
+ queue_work(priv->workqueue, &priv->rf_kill);
+ else
+ wake_up_interruptible(&priv->wait_command_queue);
+}
+
+/**
+ * iwl_setup_rx_handlers - Initialize Rx handler callbacks
+ *
+ * Setup the RX handlers for each of the reply types sent from the uCode
+ * to the host.
+ *
+ * This function chains into the hardware specific files for them to setup
+ * any hardware specific handlers as well.
+ */
+static void iwl_setup_rx_handlers(struct iwl_priv *priv)
+{
+ priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
+ priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
+ priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
+ priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
+ priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
+ iwl_rx_spectrum_measure_notif;
+ priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
+ priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
+ iwl_rx_pm_debug_statistics_notif;
+ priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
+
+ /* NOTE: iwl_rx_statistics is different based on whether
+ * the build is for the 3945 or the 4965. See the
+ * corresponding implementation in iwl-XXXX.c
+ *
+ * The same handler is used for both the REPLY to a
+ * discrete statistics request from the host as well as
+ * for the periodic statistics notification from the uCode
+ */
+ priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
+ priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
+
+ priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
+ priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
+ priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
+ iwl_rx_scan_results_notif;
+ priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
+ iwl_rx_scan_complete_notif;
+ priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
+ priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
+
+ /* Setup hardware specific Rx handlers */
+ iwl_hw_rx_handler_setup(priv);
+}
+
+/**
+ * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
+ * @rxb: Rx buffer to reclaim
+ *
+ * If an Rx buffer has an async callback associated with it the callback
+ * will be executed. The attached skb (if present) will only be freed
+ * if the callback returns 1
+ */
+static void iwl_tx_cmd_complete(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ int txq_id = SEQ_TO_QUEUE(sequence);
+ int index = SEQ_TO_INDEX(sequence);
+ int huge = sequence & SEQ_HUGE_FRAME;
+ int cmd_index;
+ struct iwl_cmd *cmd;
+
+ /* If a Tx command is being handled and it isn't in the actual
+ * command queue then there a command routing bug has been introduced
+ * in the queue management code. */
+ if (txq_id != IWL_CMD_QUEUE_NUM)
+ IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
+ txq_id, pkt->hdr.cmd);
+ BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
+
+ cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
+ cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
+
+ /* Input error checking is done when commands are added to queue. */
+ if (cmd->meta.flags & CMD_WANT_SKB) {
+ cmd->meta.source->u.skb = rxb->skb;
+ rxb->skb = NULL;
+ } else if (cmd->meta.u.callback &&
+ !cmd->meta.u.callback(priv, cmd, rxb->skb))
+ rxb->skb = NULL;
+
+ iwl_tx_queue_reclaim(priv, txq_id, index);
+
+ if (!(cmd->meta.flags & CMD_ASYNC)) {
+ clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+ wake_up_interruptible(&priv->wait_command_queue);
+ }
+}
+
+/************************** RX-FUNCTIONS ****************************/
+/*
+ * Rx theory of operation
+ *
+ * The host allocates 32 DMA target addresses and passes the host address
+ * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
+ * 0 to 31
+ *
+ * Rx Queue Indexes
+ * The host/firmware share two index registers for managing the Rx buffers.
+ *
+ * The READ index maps to the first position that the firmware may be writing
+ * to -- the driver can read up to (but not including) this position and get
+ * good data.
+ * The READ index is managed by the firmware once the card is enabled.
+ *
+ * The WRITE index maps to the last position the driver has read from -- the
+ * position preceding WRITE is the last slot the firmware can place a packet.
+ *
+ * The queue is empty (no good data) if WRITE = READ - 1, and is full if
+ * WRITE = READ.
+ *
+ * During initialization the host sets up the READ queue position to the first
+ * INDEX position, and WRITE to the last (READ - 1 wrapped)
+ *
+ * When the firmware places a packet in a buffer it will advance the READ index
+ * and fire the RX interrupt. The driver can then query the READ index and
+ * process as many packets as possible, moving the WRITE index forward as it
+ * resets the Rx queue buffers with new memory.
+ *
+ * The management in the driver is as follows:
+ * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
+ * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
+ * to replensish the iwl->rxq->rx_free.
+ * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
+ * iwl->rxq is replenished and the READ INDEX is updated (updating the
+ * 'processed' and 'read' driver indexes as well)
+ * + A received packet is processed and handed to the kernel network stack,
+ * detached from the iwl->rxq. The driver 'processed' index is updated.
+ * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
+ * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
+ * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
+ * were enough free buffers and RX_STALLED is set it is cleared.
+ *
+ *
+ * Driver sequence:
+ *
+ * iwl_rx_queue_alloc() Allocates rx_free
+ * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
+ * iwl_rx_queue_restock
+ * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
+ * queue, updates firmware pointers, and updates
+ * the WRITE index. If insufficient rx_free buffers
+ * are available, schedules iwl_rx_replenish
+ *
+ * -- enable interrupts --
+ * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
+ * READ INDEX, detaching the SKB from the pool.
+ * Moves the packet buffer from queue to rx_used.
+ * Calls iwl_rx_queue_restock to refill any empty
+ * slots.
+ * ...
+ *
+ */
+
+/**
+ * iwl_rx_queue_space - Return number of free slots available in queue.
+ */
+static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
+{
+ int s = q->read - q->write;
+ if (s <= 0)
+ s += RX_QUEUE_SIZE;
+ /* keep some buffer to not confuse full and empty queue */
+ s -= 2;
+ if (s < 0)
+ s = 0;
+ return s;
+}
+
+/**
+ * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
+ *
+ * NOTE: This function has 3945 and 4965 specific code sections
+ * but is declared in base due to the majority of the
+ * implementation being the same (only a numeric constant is
+ * different)
+ *
+ */
+int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
+{
+ u32 reg = 0;
+ int rc = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&q->lock, flags);
+
+ if (q->need_update == 0)
+ goto exit_unlock;
+
+ if (test_bit(STATUS_POWER_PMI, &priv->status)) {
+ reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
+
+ if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
+ iwl_set_bit(priv, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+ goto exit_unlock;
+ }
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ goto exit_unlock;
+
+ iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
+ q->write & ~0x7);
+ iwl_release_restricted_access(priv);
+ } else
+ iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
+
+
+ q->need_update = 0;
+
+ exit_unlock:
+ spin_unlock_irqrestore(&q->lock, flags);
+ return rc;
+}
+
+/**
+ * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
+ *
+ * NOTE: This function has 3945 and 4965 specific code paths in it.
+ */
+static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
+ dma_addr_t dma_addr)
+{
+ return cpu_to_le32((u32)(dma_addr >> 8));
+}
+
+
+/**
+ * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
+ *
+ * If there are slots in the RX queue that need to be restocked,
+ * and we have free pre-allocated buffers, fill the ranks as much
+ * as we can pulling from rx_free.
+ *
+ * This moves the 'write' index forward to catch up with 'processed', and
+ * also updates the memory address in the firmware to reference the new
+ * target buffer.
+ */
+int iwl_rx_queue_restock(struct iwl_priv *priv)
+{
+ struct iwl_rx_queue *rxq = &priv->rxq;
+ struct list_head *element;
+ struct iwl_rx_mem_buffer *rxb;
+ unsigned long flags;
+ int write, rc;
+
+ spin_lock_irqsave(&rxq->lock, flags);
+ write = rxq->write & ~0x7;
+ while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
+ element = rxq->rx_free.next;
+ rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
+ list_del(element);
+ rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
+ rxq->queue[rxq->write] = rxb;
+ rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
+ rxq->free_count--;
+ }
+ spin_unlock_irqrestore(&rxq->lock, flags);
+ /* If the pre-allocated buffer pool is dropping low, schedule to
+ * refill it */
+ if (rxq->free_count <= RX_LOW_WATERMARK)
+ queue_work(priv->workqueue, &priv->rx_replenish);
+
+
+ /* If we've added more space for the firmware to place data, tell it */
+ if ((write != (rxq->write & ~0x7))
+ || (abs(rxq->write - rxq->read) > 7)) {
+ spin_lock_irqsave(&rxq->lock, flags);
+ rxq->need_update = 1;
+ spin_unlock_irqrestore(&rxq->lock, flags);
+ rc = iwl_rx_queue_update_write_ptr(priv, rxq);
+ if (rc)
+ return rc;
+ }
+
+ return 0;
+}
+
+/**
+ * iwl_rx_replensih - 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 iwl_rx_queue_restock.
+ * This is called as a scheduled work item (except for during intialization)
+ */
+void iwl_rx_replenish(void *data)
+{
+ struct iwl_priv *priv = data;
+ struct iwl_rx_queue *rxq = &priv->rxq;
+ struct list_head *element;
+ struct iwl_rx_mem_buffer *rxb;
+ unsigned long flags;
+ spin_lock_irqsave(&rxq->lock, flags);
+ while (!list_empty(&rxq->rx_used)) {
+ element = rxq->rx_used.next;
+ rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
+ rxb->skb =
+ alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
+ if (!rxb->skb) {
+ if (net_ratelimit())
+ printk(KERN_CRIT DRV_NAME
+ ": Can not allocate SKB buffers\n");
+ /* We don't reschedule replenish work here -- we will
+ * call the restock method and if it still needs
+ * more buffers it will schedule replenish */
+ break;
+ }
+ priv->alloc_rxb_skb++;
+ list_del(element);
+ rxb->dma_addr =
+ pci_map_single(priv->pci_dev, rxb->skb->data,
+ IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ list_add_tail(&rxb->list, &rxq->rx_free);
+ rxq->free_count++;
+ }
+ spin_unlock_irqrestore(&rxq->lock, flags);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_rx_queue_restock(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
+ * If an SKB has been detached, the POOL needs to have it's 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
+ */
+void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+ int i;
+ for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
+ if (rxq->pool[i].skb != NULL) {
+ pci_unmap_single(priv->pci_dev,
+ rxq->pool[i].dma_addr,
+ IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(rxq->pool[i].skb);
+ }
+ }
+
+ pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
+ rxq->dma_addr);
+ rxq->bd = NULL;
+}
+
+int iwl_rx_queue_alloc(struct iwl_priv *priv)
+{
+ struct iwl_rx_queue *rxq = &priv->rxq;
+ struct pci_dev *dev = priv->pci_dev;
+ int i;
+
+ spin_lock_init(&rxq->lock);
+ INIT_LIST_HEAD(&rxq->rx_free);
+ INIT_LIST_HEAD(&rxq->rx_used);
+ rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
+ if (!rxq->bd)
+ return -ENOMEM;
+ /* Fill the rx_used queue with _all_ of the Rx buffers */
+ for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
+ list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
+ /* Set us so that we have processed and used all buffers, but have
+ * not restocked the Rx queue with fresh buffers */
+ rxq->read = rxq->write = 0;
+ rxq->free_count = 0;
+ rxq->need_update = 0;
+ return 0;
+}
+
+void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+ unsigned long flags;
+ int i;
+ spin_lock_irqsave(&rxq->lock, flags);
+ INIT_LIST_HEAD(&rxq->rx_free);
+ INIT_LIST_HEAD(&rxq->rx_used);
+ /* Fill the rx_used queue with _all_ of the Rx buffers */
+ for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
+ /* In the reset function, these buffers may have been allocated
+ * to an SKB, so we need to unmap and free potential storage */
+ if (rxq->pool[i].skb != NULL) {
+ pci_unmap_single(priv->pci_dev,
+ rxq->pool[i].dma_addr,
+ IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ priv->alloc_rxb_skb--;
+ dev_kfree_skb(rxq->pool[i].skb);
+ rxq->pool[i].skb = NULL;
+ }
+ list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
+ }
+
+ /* Set us so that we have processed and used all buffers, but have
+ * not restocked the Rx queue with fresh buffers */
+ rxq->read = rxq->write = 0;
+ rxq->free_count = 0;
+ spin_unlock_irqrestore(&rxq->lock, flags);
+}
+
+/* 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 iwl_calc_db_from_ratio(int sig_ratio)
+{
+ /* Anything above 1000:1 just report as 60 dB */
+ if (sig_ratio > 1000)
+ return 60;
+
+ /* Above 100:1, divide by 10 and use table,
+ * add 20 dB to make up for divide by 10 */
+ if (sig_ratio > 100)
+ return (20 + (int)ratio2dB[sig_ratio/10]);
+
+ /* We shouldn't see this */
+ if (sig_ratio < 1)
+ return 0;
+
+ /* Use table for ratios 1:1 - 99:1 */
+ return (int)ratio2dB[sig_ratio];
+}
+
+#define PERFECT_RSSI (-20) /* dBm */
+#define WORST_RSSI (-95) /* dBm */
+#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
+
+/* Calculate an indication of rx signal quality (a percentage, not dBm!).
+ * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
+ * about formulas used below. */
+int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
+{
+ int sig_qual;
+ int degradation = PERFECT_RSSI - rssi_dbm;
+
+ /* If we get a noise measurement, use signal-to-noise ratio (SNR)
+ * as indicator; formula is (signal dbm - noise dbm).
+ * SNR at or above 40 is a great signal (100%).
+ * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
+ * Weakest usable signal is usually 10 - 15 dB SNR. */
+ if (noise_dbm) {
+ if (rssi_dbm - noise_dbm >= 40)
+ return 100;
+ else if (rssi_dbm < noise_dbm)
+ return 0;
+ sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
+
+ /* Else use just the signal level.
+ * This formula is a least squares fit of data points collected and
+ * compared with a reference system that had a percentage (%) display
+ * for signal quality. */
+ } else
+ sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
+ (15 * RSSI_RANGE + 62 * degradation)) /
+ (RSSI_RANGE * RSSI_RANGE);
+
+ if (sig_qual > 100)
+ sig_qual = 100;
+ else if (sig_qual < 1)
+ sig_qual = 0;
+
+ return sig_qual;
+}
+
+/**
+ * iwl_rx_handle - Main entry function for receiving responses from the uCode
+ *
+ * Uses the priv->rx_handlers callback function array to invoke
+ * the appropriate handlers, including command responses,
+ * frame-received notifications, and other notifications.
+ */
+static void iwl_rx_handle(struct iwl_priv *priv)
+{
+ struct iwl_rx_mem_buffer *rxb;
+ struct iwl_rx_packet *pkt;
+ struct iwl_rx_queue *rxq = &priv->rxq;
+ u32 r, i;
+ int reclaim;
+ unsigned long flags;
+
+ r = iwl_hw_get_rx_read(priv);
+ i = rxq->read;
+
+ /* Rx interrupt, but nothing sent from uCode */
+ if (i == r)
+ IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
+
+ while (i != r) {
+ rxb = rxq->queue[i];
+
+ /* If an RXB doesn't have a 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_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
+ IWL_RX_BUF_SIZE,
+ PCI_DMA_FROMDEVICE);
+ pkt = (struct iwl_rx_packet *)rxb->skb->data;
+
+ /* Reclaim a command buffer only if this packet is a response
+ * to a (driver-originated) command.
+ * If the packet (e.g. Rx frame) originated from uCode,
+ * there is no command buffer to reclaim.
+ * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
+ * but apparently a few don't get set; catch them here. */
+ reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
+ (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
+ (pkt->hdr.cmd != REPLY_4965_RX) &&
+ (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
+ (pkt->hdr.cmd != REPLY_TX);
+
+ /* Based on type of command response or notification,
+ * handle those that need handling via function in
+ * rx_handlers table. See iwl_setup_rx_handlers() */
+ if (priv->rx_handlers[pkt->hdr.cmd]) {
+ IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
+ "r = %d, i = %d, %s, 0x%02x\n", r, i,
+ get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
+ priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
+ } else {
+ /* No handling needed */
+ IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
+ "r %d i %d No handler needed for %s, 0x%02x\n",
+ r, i, get_cmd_string(pkt->hdr.cmd),
+ pkt->hdr.cmd);
+ }
+
+ if (reclaim) {
+ /* Invoke any callbacks, transfer the skb to caller,
+ * and fire off the (possibly) blocking iwl_send_cmd()
+ * as we reclaim the driver command queue */
+ if (rxb && rxb->skb)
+ iwl_tx_cmd_complete(priv, rxb);
+ else
+ IWL_WARNING("Claim null rxb?\n");
+ }
+
+ /* For now we just don't re-use anything. We can tweak this
+ * later to try and re-use notification packets and SKBs that
+ * fail to Rx correctly */
+ if (rxb->skb != NULL) {
+ priv->alloc_rxb_skb--;
+ dev_kfree_skb_any(rxb->skb);
+ rxb->skb = NULL;
+ }
+
+ pci_unmap_single(priv->pci_dev, rxb->dma_addr,
+ IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ spin_lock_irqsave(&rxq->lock, flags);
+ list_add_tail(&rxb->list, &priv->rxq.rx_used);
+ spin_unlock_irqrestore(&rxq->lock, flags);
+ i = (i + 1) & RX_QUEUE_MASK;
+ }
+
+ /* Backtrack one entry */
+ priv->rxq.read = i;
+ iwl_rx_queue_restock(priv);
+}
+
+int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq)
+{
+ u32 reg = 0;
+ int rc = 0;
+ int txq_id = txq->q.id;
+
+ if (txq->need_update == 0)
+ return rc;
+
+ /* if we're trying to save power */
+ if (test_bit(STATUS_POWER_PMI, &priv->status)) {
+ /* wake up nic if it's powered down ...
+ * uCode will wake up, and interrupt us again, so next
+ * time we'll skip this part. */
+ reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
+
+ if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
+ IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
+ iwl_set_bit(priv, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+ return rc;
+ }
+
+ /* restore this queue's parameters in nic hardware. */
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ return rc;
+ iwl_write_restricted(priv, HBUS_TARG_WRPTR,
+ txq->q.first_empty | (txq_id << 8));
+ iwl_release_restricted_access(priv);
+
+ /* else not in power-save mode, uCode will never sleep when we're
+ * trying to tx (during RFKILL, we're not trying to tx). */
+ } else
+ iwl_write32(priv, HBUS_TARG_WRPTR,
+ txq->q.first_empty | (txq_id << 8));
+
+ txq->need_update = 0;
+
+ return rc;
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
+{
+ IWL_DEBUG_RADIO("RX CONFIG:\n");
+ iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
+ IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
+ IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
+ IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
+ le32_to_cpu(rxon->filter_flags));
+ IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
+ IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
+ rxon->ofdm_basic_rates);
+ IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
+ IWL_DEBUG_RADIO("u8[6] node_addr: " MAC_FMT "\n",
+ MAC_ARG(rxon->node_addr));
+ IWL_DEBUG_RADIO("u8[6] bssid_addr: " MAC_FMT "\n",
+ MAC_ARG(rxon->bssid_addr));
+ IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
+}
+#endif
+
+static void iwl_enable_interrupts(struct iwl_priv *priv)
+{
+ IWL_DEBUG_ISR("Enabling interrupts\n");
+ set_bit(STATUS_INT_ENABLED, &priv->status);
+ iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
+}
+
+static inline void iwl_disable_interrupts(struct iwl_priv *priv)
+{
+ clear_bit(STATUS_INT_ENABLED, &priv->status);
+
+ /* disable interrupts from uCode/NIC to host */
+ iwl_write32(priv, CSR_INT_MASK, 0x00000000);
+
+ /* acknowledge/clear/reset any interrupts still pending
+ * from uCode or flow handler (Rx/Tx DMA) */
+ iwl_write32(priv, CSR_INT, 0xffffffff);
+ iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
+ IWL_DEBUG_ISR("Disabled interrupts\n");
+}
+
+static const char *desc_lookup(int i)
+{
+ switch (i) {
+ case 1:
+ return "FAIL";
+ case 2:
+ return "BAD_PARAM";
+ case 3:
+ return "BAD_CHECKSUM";
+ case 4:
+ return "NMI_INTERRUPT";
+ case 5:
+ return "SYSASSERT";
+ case 6:
+ return "FATAL_ERROR";
+ }
+
+ return "UNKNOWN";
+}
+
+#define ERROR_START_OFFSET (1 * sizeof(u32))
+#define ERROR_ELEM_SIZE (7 * sizeof(u32))
+
+static void iwl_dump_nic_error_log(struct iwl_priv *priv)
+{
+ u32 data2, line;
+ u32 desc, time, count, base, data1;
+ u32 blink1, blink2, ilink1, ilink2;
+ int rc;
+
+ base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
+
+ if (!iwl_hw_valid_rtc_data_addr(base)) {
+ IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
+ return;
+ }
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ IWL_WARNING("Can not read from adapter at this time.\n");
+ return;
+ }
+
+ count = iwl_read_restricted_mem(priv, base);
+
+ if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
+ IWL_ERROR("Start IWL Error Log Dump:\n");
+ IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
+ priv->status, priv->config, count);
+ }
+
+ desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
+ blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
+ blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
+ ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
+ ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
+ data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
+ data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
+ line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
+ time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
+
+ IWL_ERROR("Desc Time "
+ "data1 data2 line\n");
+ IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
+ desc_lookup(desc), desc, time, data1, data2, line);
+ IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
+ IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
+ ilink1, ilink2);
+
+ iwl_release_restricted_access(priv);
+}
+
+#define EVENT_START_OFFSET (4 * sizeof(u32))
+
+/**
+ * iwl_print_event_log - Dump error event log to syslog
+ *
+ * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
+ */
+static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
+ u32 num_events, u32 mode)
+{
+ u32 i;
+ u32 base; /* SRAM byte address of event log header */
+ u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
+ u32 ptr; /* SRAM byte address of log data */
+ u32 ev, time, data; /* event log data */
+
+ if (num_events == 0)
+ return;
+
+ base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+
+ if (mode == 0)
+ event_size = 2 * sizeof(u32);
+ else
+ event_size = 3 * sizeof(u32);
+
+ ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
+
+ /* "time" is actually "data" for mode 0 (no timestamp).
+ * place event id # at far right for easier visual parsing. */
+ for (i = 0; i < num_events; i++) {
+ ev = iwl_read_restricted_mem(priv, ptr);
+ ptr += sizeof(u32);
+ time = iwl_read_restricted_mem(priv, ptr);
+ ptr += sizeof(u32);
+ if (mode == 0)
+ IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
+ else {
+ data = iwl_read_restricted_mem(priv, ptr);
+ ptr += sizeof(u32);
+ IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
+ }
+ }
+}
+
+static void iwl_dump_nic_event_log(struct iwl_priv *priv)
+{
+ int rc;
+ u32 base; /* SRAM byte address of event log header */
+ u32 capacity; /* event log capacity in # entries */
+ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
+ u32 num_wraps; /* # times uCode wrapped to top of log */
+ u32 next_entry; /* index of next entry to be written by uCode */
+ u32 size; /* # entries that we'll print */
+
+ base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+ if (!iwl_hw_valid_rtc_data_addr(base)) {
+ IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
+ return;
+ }
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ IWL_WARNING("Can not read from adapter at this time.\n");
+ return;
+ }
+
+ /* event log header */
+ capacity = iwl_read_restricted_mem(priv, base);
+ mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
+ num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
+ next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
+
+ size = num_wraps ? capacity : next_entry;
+
+ /* bail out if nothing in log */
+ if (size == 0) {
+ IWL_ERROR("Start IPW Event Log Dump: nothing in log\n");
+ iwl_release_restricted_access(priv);
+ return;
+ }
+
+ IWL_ERROR("Start IPW Event Log Dump: display count %d, wraps %d\n",
+ size, num_wraps);
+
+ /* if uCode has wrapped back to top of log, start at the oldest entry,
+ * i.e the next one that uCode would fill. */
+ if (num_wraps)
+ iwl_print_event_log(priv, next_entry,
+ capacity - next_entry, mode);
+
+ /* (then/else) start at top of log */
+ iwl_print_event_log(priv, 0, next_entry, mode);
+
+ iwl_release_restricted_access(priv);
+}
+
+/**
+ * iwl_irq_handle_error - called for HW or SW error interrupt from card
+ */
+static void iwl_irq_handle_error(struct iwl_priv *priv)
+{
+ /* Set the FW error flag -- cleared on iwl_down */
+ set_bit(STATUS_FW_ERROR, &priv->status);
+
+ /* Cancel currently queued command. */
+ clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (iwl_debug_level & IWL_DL_FW_ERRORS) {
+ iwl_dump_nic_error_log(priv);
+ iwl_dump_nic_event_log(priv);
+ iwl_print_rx_config_cmd(&priv->staging_rxon);
+ }
+#endif
+
+ wake_up_interruptible(&priv->wait_command_queue);
+
+ /* Keep the restart process from trying to send host
+ * commands by clearing the INIT status bit */
+ clear_bit(STATUS_READY, &priv->status);
+
+ if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+ IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
+ "Restarting adapter due to uCode error.\n");
+
+ if (iwl_is_associated(priv)) {
+ memcpy(&priv->recovery_rxon, &priv->active_rxon,
+ sizeof(priv->recovery_rxon));
+ priv->error_recovering = 1;
+ }
+ queue_work(priv->workqueue, &priv->restart);
+ }
+}
+
+static void iwl_error_recovery(struct iwl_priv *priv)
+{
+ unsigned long flags;
+
+ memcpy(&priv->staging_rxon, &priv->recovery_rxon,
+ sizeof(priv->staging_rxon));
+ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ iwl_commit_rxon(priv);
+
+ iwl_rxon_add_station(priv, priv->bssid, 1);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
+ priv->error_recovering = 0;
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void iwl_irq_tasklet(struct iwl_priv *priv)
+{
+ u32 inta, handled = 0;
+ u32 inta_fh;
+ unsigned long flags;
+#ifdef CONFIG_IWLWIFI_DEBUG
+ u32 inta_mask;
+#endif
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* Ack/clear/reset pending uCode interrupts.
+ * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
+ * and will clear only when CSR_FH_INT_STATUS gets cleared. */
+ inta = iwl_read32(priv, CSR_INT);
+ iwl_write32(priv, CSR_INT, inta);
+
+ /* Ack/clear/reset pending flow-handler (DMA) interrupts.
+ * Any new interrupts that happen after this, either while we're
+ * in this tasklet, or later, will show up in next ISR/tasklet. */
+ inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
+ iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (iwl_debug_level & IWL_DL_ISR) {
+ inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
+ IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
+ inta, inta_mask, inta_fh);
+ }
+#endif
+
+ /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
+ * atomic, make sure that inta covers all the interrupts that
+ * we've discovered, even if FH interrupt came in just after
+ * reading CSR_INT. */
+ if (inta_fh & CSR_FH_INT_RX_MASK)
+ inta |= CSR_INT_BIT_FH_RX;
+ if (inta_fh & CSR_FH_INT_TX_MASK)
+ inta |= CSR_INT_BIT_FH_TX;
+
+ /* Now service all interrupt bits discovered above. */
+ if (inta & CSR_INT_BIT_HW_ERR) {
+ IWL_ERROR("Microcode HW error detected. Restarting.\n");
+
+ /* Tell the device to stop sending interrupts */
+ iwl_disable_interrupts(priv);
+
+ iwl_irq_handle_error(priv);
+
+ handled |= CSR_INT_BIT_HW_ERR;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return;
+ }
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (iwl_debug_level & (IWL_DL_ISR)) {
+ /* NIC fires this, but we don't use it, redundant with WAKEUP */
+ if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
+ IWL_DEBUG_ISR("Microcode started or stopped.\n");
+
+ /* Alive notification via Rx interrupt will do the real work */
+ if (inta & CSR_INT_BIT_ALIVE)
+ IWL_DEBUG_ISR("Alive interrupt\n");
+ }
+#endif
+ /* Safely ignore these bits for debug checks below */
+ inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
+
+ /* HW RF KILL switch toggled (4965 only) */
+ if (inta & CSR_INT_BIT_RF_KILL) {
+ int hw_rf_kill = 0;
+ if (!(iwl_read32(priv, CSR_GP_CNTRL) &
+ CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
+ hw_rf_kill = 1;
+
+ IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
+ "RF_KILL bit toggled to %s.\n",
+ hw_rf_kill ? "disable radio":"enable radio");
+
+ /* Queue restart only if RF_KILL switch was set to "kill"
+ * when we loaded driver, and is now set to "enable".
+ * After we're Alive, RF_KILL gets handled by
+ * iwl_rx_card_state_notif() */
+ if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
+ queue_work(priv->workqueue, &priv->restart);
+
+ handled |= CSR_INT_BIT_RF_KILL;
+ }
+
+ /* Chip got too hot and stopped itself (4965 only) */
+ if (inta & CSR_INT_BIT_CT_KILL) {
+ IWL_ERROR("Microcode CT kill error detected.\n");
+ handled |= CSR_INT_BIT_CT_KILL;
+ }
+
+ /* Error detected by uCode */
+ if (inta & CSR_INT_BIT_SW_ERR) {
+ IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
+ inta);
+ iwl_irq_handle_error(priv);
+ handled |= CSR_INT_BIT_SW_ERR;
+ }
+
+ /* uCode wakes up after power-down sleep */
+ if (inta & CSR_INT_BIT_WAKEUP) {
+ IWL_DEBUG_ISR("Wakeup interrupt\n");
+ iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
+ iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
+
+ 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)) {
+ iwl_rx_handle(priv);
+ handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
+ }
+
+ if (inta & CSR_INT_BIT_FH_TX) {
+ IWL_DEBUG_ISR("Tx interrupt\n");
+ handled |= CSR_INT_BIT_FH_TX;
+ }
+
+ if (inta & ~handled)
+ IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
+
+ if (inta & ~CSR_INI_SET_MASK) {
+ IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
+ inta & ~CSR_INI_SET_MASK);
+ IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
+ }
+
+ /* Re-enable all interrupts */
+ iwl_enable_interrupts(priv);
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ if (iwl_debug_level & (IWL_DL_ISR)) {
+ inta = iwl_read32(priv, CSR_INT);
+ inta_mask = iwl_read32(priv, CSR_INT_MASK);
+ inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
+ IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
+ "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
+ }
+#endif
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static irqreturn_t iwl_isr(int irq, void *data)
+{
+ struct iwl_priv *priv = data;
+ u32 inta, inta_mask;
+ u32 inta_fh;
+ if (!priv)
+ return IRQ_NONE;
+
+ spin_lock(&priv->lock);
+
+ /* Disable (but don't clear!) interrupts here to avoid
+ * back-to-back ISRs and sporadic interrupts from our NIC.
+ * If we have something to service, the tasklet will re-enable ints.
+ * If we *don't* have something, we'll re-enable before leaving here. */
+ inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
+ iwl_write32(priv, CSR_INT_MASK, 0x00000000);
+
+ /* Discover which interrupts are active/pending */
+ inta = iwl_read32(priv, CSR_INT);
+ inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
+
+ /* Ignore interrupt if there's nothing in NIC to service.
+ * This may be due to IRQ shared with another device,
+ * or due to sporadic interrupts thrown from our NIC. */
+ if (!inta && !inta_fh) {
+ IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
+ goto none;
+ }
+
+ if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
+ /* Hardware disappeared */
+ IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
+ goto none;
+ }
+
+ IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
+ inta, inta_mask, inta_fh);
+
+ /* iwl_irq_tasklet() will service interrupts and re-enable them */
+ tasklet_schedule(&priv->irq_tasklet);
+ spin_unlock(&priv->lock);
+
+ return IRQ_HANDLED;
+
+ none:
+ /* re-enable interrupts here since we don't have anything to service. */
+ iwl_enable_interrupts(priv);
+ spin_unlock(&priv->lock);
+ return IRQ_NONE;
+}
+
+/************************** EEPROM BANDS ****************************
+ *
+ * The iwl_eeprom_band definitions below provide the mapping from the
+ * EEPROM contents to the specific channel number supported for each
+ * band.
+ *
+ * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
+ * definition below maps to physical channel 42 in the 5.2GHz spectrum.
+ * The specific geography and calibration information for that channel
+ * is contained in the eeprom map itself.
+ *
+ * During init, we copy the eeprom information and channel map
+ * information into priv->channel_info_24/52 and priv->channel_map_24/52
+ *
+ * channel_map_24/52 provides the index in the channel_info array for a
+ * given channel. We have to have two separate maps as there is channel
+ * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
+ * band_2
+ *
+ * A value of 0xff stored in the channel_map indicates that the channel
+ * is not supported by the hardware at all.
+ *
+ * A value of 0xfe in the channel_map indicates that the channel is not
+ * valid for Tx with the current hardware. This means that
+ * while the system can tune and receive on a given channel, it may not
+ * be able to associate or transmit any frames on that
+ * channel. There is no corresponding channel information for that
+ * entry.
+ *
+ *********************************************************************/
+
+/* 2.4 GHz */
+static const u8 iwl_eeprom_band_1[14] = {
+ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
+};
+
+/* 5.2 GHz bands */
+static const u8 iwl_eeprom_band_2[] = {
+ 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
+};
+
+static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
+ 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
+};
+
+static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
+ 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
+};
+
+static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
+ 145, 149, 153, 157, 161, 165
+};
+
+static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
+ 1, 2, 3, 4, 5, 6, 7
+};
+
+static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
+ 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
+};
+
+static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
+ int *eeprom_ch_count,
+ const struct iwl_eeprom_channel
+ **eeprom_ch_info,
+ const u8 **eeprom_ch_index)
+{
+ switch (band) {
+ case 1: /* 2.4GHz band */
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
+ *eeprom_ch_info = priv->eeprom.band_1_channels;
+ *eeprom_ch_index = iwl_eeprom_band_1;
+ break;
+ case 2: /* 5.2GHz band */
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
+ *eeprom_ch_info = priv->eeprom.band_2_channels;
+ *eeprom_ch_index = iwl_eeprom_band_2;
+ break;
+ case 3: /* 5.2GHz band */
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
+ *eeprom_ch_info = priv->eeprom.band_3_channels;
+ *eeprom_ch_index = iwl_eeprom_band_3;
+ break;
+ case 4: /* 5.2GHz band */
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
+ *eeprom_ch_info = priv->eeprom.band_4_channels;
+ *eeprom_ch_index = iwl_eeprom_band_4;
+ break;
+ case 5: /* 5.2GHz band */
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
+ *eeprom_ch_info = priv->eeprom.band_5_channels;
+ *eeprom_ch_index = iwl_eeprom_band_5;
+ break;
+ case 6:
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
+ *eeprom_ch_info = priv->eeprom.band_24_channels;
+ *eeprom_ch_index = iwl_eeprom_band_6;
+ break;
+ case 7:
+ *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
+ *eeprom_ch_info = priv->eeprom.band_52_channels;
+ *eeprom_ch_index = iwl_eeprom_band_7;
+ break;
+ default:
+ BUG();
+ return;
+ }
+}
+
+const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
+ int phymode, u16 channel)
+{
+ int i;
+
+ switch (phymode) {
+ case MODE_IEEE80211A:
+ for (i = 14; i < priv->channel_count; i++) {
+ if (priv->channel_info[i].channel == channel)
+ return &priv->channel_info[i];
+ }
+ break;
+
+ case MODE_IEEE80211B:
+ case MODE_IEEE80211G:
+ if (channel >= 1 && channel <= 14)
+ return &priv->channel_info[channel - 1];
+ break;
+
+ }
+
+ return NULL;
+}
+
+#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
+ ? # x " " : "")
+
+static int iwl_init_channel_map(struct iwl_priv *priv)
+{
+ int eeprom_ch_count = 0;
+ const u8 *eeprom_ch_index = NULL;
+ const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
+ int band, ch;
+ struct iwl_channel_info *ch_info;
+
+ if (priv->channel_count) {
+ IWL_DEBUG_INFO("Channel map already initialized.\n");
+ return 0;
+ }
+
+ if (priv->eeprom.version < 0x2f) {
+ IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
+ priv->eeprom.version);
+ return -EINVAL;
+ }
+
+ IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
+
+ priv->channel_count =
+ ARRAY_SIZE(iwl_eeprom_band_1) +
+ ARRAY_SIZE(iwl_eeprom_band_2) +
+ ARRAY_SIZE(iwl_eeprom_band_3) +
+ ARRAY_SIZE(iwl_eeprom_band_4) +
+ ARRAY_SIZE(iwl_eeprom_band_5);
+
+ IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
+
+ priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
+ priv->channel_count, GFP_KERNEL);
+ if (!priv->channel_info) {
+ IWL_ERROR("Could not allocate channel_info\n");
+ priv->channel_count = 0;
+ return -ENOMEM;
+ }
+
+ ch_info = priv->channel_info;
+
+ /* Loop through the 5 EEPROM bands adding them in order to the
+ * channel map we maintain (that contains additional information than
+ * what just in the EEPROM) */
+ for (band = 1; band <= 5; band++) {
+
+ iwl_init_band_reference(priv, band, &eeprom_ch_count,
+ &eeprom_ch_info, &eeprom_ch_index);
+
+ /* Loop through each band adding each of the channels */
+ for (ch = 0; ch < eeprom_ch_count; ch++) {
+ ch_info->channel = eeprom_ch_index[ch];
+ ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
+ MODE_IEEE80211A;
+
+ /* permanently store EEPROM's channel regulatory flags
+ * and max power in channel info database. */
+ ch_info->eeprom = eeprom_ch_info[ch];
+
+ /* Copy the run-time flags so they are there even on
+ * invalid channels */
+ ch_info->flags = eeprom_ch_info[ch].flags;
+
+ if (!(is_channel_valid(ch_info))) {
+ IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
+ "No traffic\n",
+ ch_info->channel,
+ ch_info->flags,
+ is_channel_a_band(ch_info) ?
+ "5.2" : "2.4");
+ ch_info++;
+ continue;
+ }
+
+ /* Initialize regulatory-based run-time data */
+ ch_info->max_power_avg = ch_info->curr_txpow =
+ eeprom_ch_info[ch].max_power_avg;
+ ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
+ ch_info->min_power = 0;
+
+ IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
+ " %ddBm): Ad-Hoc %ssupported\n",
+ ch_info->channel,
+ is_channel_a_band(ch_info) ?
+ "5.2" : "2.4",
+ CHECK_AND_PRINT(IBSS),
+ CHECK_AND_PRINT(ACTIVE),
+ CHECK_AND_PRINT(RADAR),
+ CHECK_AND_PRINT(WIDE),
+ CHECK_AND_PRINT(NARROW),
+ CHECK_AND_PRINT(DFS),
+ eeprom_ch_info[ch].flags,
+ eeprom_ch_info[ch].max_power_avg,
+ ((eeprom_ch_info[ch].
+ flags & EEPROM_CHANNEL_IBSS)
+ && !(eeprom_ch_info[ch].
+ flags & EEPROM_CHANNEL_RADAR))
+ ? "" : "not ");
+
+ /* Set the user_txpower_limit to the highest power
+ * supported by any channel */
+ if (eeprom_ch_info[ch].max_power_avg >
+ priv->user_txpower_limit)
+ priv->user_txpower_limit =
+ eeprom_ch_info[ch].max_power_avg;
+
+ ch_info++;
+ }
+ }
+
+ for (band = 6; band <= 7; band++) {
+ int phymode;
+ u8 fat_extension_chan;
+
+ iwl_init_band_reference(priv, band, &eeprom_ch_count,
+ &eeprom_ch_info, &eeprom_ch_index);
+
+ phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
+ /* Loop through each band adding each of the channels */
+ for (ch = 0; ch < eeprom_ch_count; ch++) {
+
+ if ((band == 6) &&
+ ((eeprom_ch_index[ch] == 5) ||
+ (eeprom_ch_index[ch] == 6) ||
+ (eeprom_ch_index[ch] == 7)))
+ fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
+ else
+ fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
+
+ iwl4965_set_fat_chan_info(priv, phymode,
+ eeprom_ch_index[ch],
+ &(eeprom_ch_info[ch]),
+ fat_extension_chan);
+
+ iwl4965_set_fat_chan_info(priv, phymode,
+ (eeprom_ch_index[ch] + 4),
+ &(eeprom_ch_info[ch]),
+ HT_IE_EXT_CHANNEL_BELOW);
+ }
+ }
+
+ return 0;
+}
+
+/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
+ * sending probe req. This should be set long enough to hear probe responses
+ * from more than one AP. */
+#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
+#define IWL_ACTIVE_DWELL_TIME_52 (10)
+
+/* For faster active scanning, scan will move to the next channel if fewer than
+ * PLCP_QUIET_THRESH packets are heard on this channel within
+ * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
+ * time if it's a quiet channel (nothing responded to our probe, and there's
+ * no other traffic).
+ * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
+#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
+#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
+
+/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
+ * Must be set longer than active dwell time.
+ * For the most reliable scan, set > AP beacon interval (typically 100msec). */
+#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
+#define IWL_PASSIVE_DWELL_TIME_52 (10)
+#define IWL_PASSIVE_DWELL_BASE (100)
+#define IWL_CHANNEL_TUNE_TIME 5
+
+static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
+{
+ if (phymode == MODE_IEEE80211A)
+ return IWL_ACTIVE_DWELL_TIME_52;
+ else
+ return IWL_ACTIVE_DWELL_TIME_24;
+}
+
+static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
+{
+ u16 active = iwl_get_active_dwell_time(priv, phymode);
+ u16 passive = (phymode != MODE_IEEE80211A) ?
+ IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
+ IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
+
+ if (iwl_is_associated(priv)) {
+ /* If we're associated, we clamp the maximum passive
+ * dwell time to be 98% of the beacon interval (minus
+ * 2 * channel tune time) */
+ passive = priv->beacon_int;
+ if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
+ passive = IWL_PASSIVE_DWELL_BASE;
+ passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
+ }
+
+ if (passive <= active)
+ passive = active + 1;
+
+ return passive;
+}
+
+static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
+ u8 is_active, u8 direct_mask,
+ struct iwl_scan_channel *scan_ch)
+{
+ const struct ieee80211_channel *channels = NULL;
+ const struct ieee80211_hw_mode *hw_mode;
+ const struct iwl_channel_info *ch_info;
+ u16 passive_dwell = 0;
+ u16 active_dwell = 0;
+ int added, i;
+
+ hw_mode = iwl_get_hw_mode(priv, phymode);
+ if (!hw_mode)
+ return 0;
+
+ channels = hw_mode->channels;
+
+ active_dwell = iwl_get_active_dwell_time(priv, phymode);
+ passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
+
+ for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
+ if (channels[i].chan ==
+ le16_to_cpu(priv->active_rxon.channel)) {
+ if (iwl_is_associated(priv)) {
+ IWL_DEBUG_SCAN
+ ("Skipping current channel %d\n",
+ le16_to_cpu(priv->active_rxon.channel));
+ continue;
+ }
+ } else if (priv->only_active_channel)
+ continue;
+
+ scan_ch->channel = channels[i].chan;
+
+ ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
+ if (!is_channel_valid(ch_info)) {
+ IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
+ scan_ch->channel);
+ continue;
+ }
+
+ if (!is_active || is_channel_passive(ch_info) ||
+ !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
+ scan_ch->type = 0; /* passive */
+ else
+ scan_ch->type = 1; /* active */
+
+ if (scan_ch->type & 1)
+ scan_ch->type |= (direct_mask << 1);
+
+ if (is_channel_narrow(ch_info))
+ scan_ch->type |= (1 << 7);
+
+ scan_ch->active_dwell = cpu_to_le16(active_dwell);
+ scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
+
+ /* Set power levels to defaults */
+ scan_ch->tpc.dsp_atten = 110;
+ /* scan_pwr_info->tpc.dsp_atten; */
+
+ /*scan_pwr_info->tpc.tx_gain; */
+ if (phymode == MODE_IEEE80211A)
+ scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
+ else {
+ scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
+ /* NOTE: if we were doing 6Mb OFDM for scans we'd use
+ * power level
+ scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
+ */
+ }
+
+ IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
+ scan_ch->channel,
+ (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
+ (scan_ch->type & 1) ?
+ active_dwell : passive_dwell);
+
+ scan_ch++;
+ added++;
+ }
+
+ IWL_DEBUG_SCAN("total channels to scan %d \n", added);
+ return added;
+}
+
+static void iwl_reset_channel_flag(struct iwl_priv *priv)
+{
+ int i, j;
+ for (i = 0; i < 3; i++) {
+ struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
+ for (j = 0; j < hw_mode->num_channels; j++)
+ hw_mode->channels[j].flag = hw_mode->channels[j].val;
+ }
+}
+
+static void iwl_init_hw_rates(struct iwl_priv *priv,
+ struct ieee80211_rate *rates)
+{
+ int i;
+
+ for (i = 0; i < IWL_RATE_COUNT; i++) {
+ rates[i].rate = iwl_rates[i].ieee * 5;
+ rates[i].val = i; /* Rate scaling will work on indexes */
+ rates[i].val2 = i;
+ rates[i].flags = IEEE80211_RATE_SUPPORTED;
+ /* Only OFDM have the bits-per-symbol set */
+ if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
+ rates[i].flags |= IEEE80211_RATE_OFDM;
+ else {
+ /*
+ * If CCK 1M then set rate flag to CCK else CCK_2
+ * which is CCK | PREAMBLE2
+ */
+ rates[i].flags |= (iwl_rates[i].plcp == 10) ?
+ IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
+ }
+
+ /* Set up which ones are basic rates... */
+ if (IWL_BASIC_RATES_MASK & (1 << i))
+ rates[i].flags |= IEEE80211_RATE_BASIC;
+ }
+
+ iwl4965_init_hw_rates(priv, rates);
+}
+
+/**
+ * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
+ */
+static int iwl_init_geos(struct iwl_priv *priv)
+{
+ struct iwl_channel_info *ch;
+ struct ieee80211_hw_mode *modes;
+ struct ieee80211_channel *channels;
+ struct ieee80211_channel *geo_ch;
+ struct ieee80211_rate *rates;
+ int i = 0;
+ enum {
+ A = 0,
+ B = 1,
+ G = 2,
+ A_11N = 3,
+ G_11N = 4,
+ };
+ int mode_count = 5;
+
+ if (priv->modes) {
+ IWL_DEBUG_INFO("Geography modes already initialized.\n");
+ set_bit(STATUS_GEO_CONFIGURED, &priv->status);
+ return 0;
+ }
+
+ modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
+ GFP_KERNEL);
+ if (!modes)
+ return -ENOMEM;
+
+ channels = kzalloc(sizeof(struct ieee80211_channel) *
+ priv->channel_count, GFP_KERNEL);
+ if (!channels) {
+ kfree(modes);
+ return -ENOMEM;
+ }
+
+ rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
+ GFP_KERNEL);
+ if (!rates) {
+ kfree(modes);
+ kfree(channels);
+ return -ENOMEM;
+ }
+
+ /* 0 = 802.11a
+ * 1 = 802.11b
+ * 2 = 802.11g
+ */
+
+ /* 5.2GHz channels start after the 2.4GHz channels */
+ modes[A].mode = MODE_IEEE80211A;
+ modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
+ modes[A].rates = rates;
+ modes[A].num_rates = 8; /* just OFDM */
+ modes[A].rates = &rates[4];
+ modes[A].num_channels = 0;
+
+ modes[B].mode = MODE_IEEE80211B;
+ modes[B].channels = channels;
+ modes[B].rates = rates;
+ modes[B].num_rates = 4; /* just CCK */
+ modes[B].num_channels = 0;
+
+ modes[G].mode = MODE_IEEE80211G;
+ modes[G].channels = channels;
+ modes[G].rates = rates;
+ modes[G].num_rates = 12; /* OFDM & CCK */
+ modes[G].num_channels = 0;
+
+ modes[G_11N].mode = MODE_IEEE80211G;
+ modes[G_11N].channels = channels;
+ modes[G_11N].num_rates = 13; /* OFDM & CCK */
+ modes[G_11N].rates = rates;
+ modes[G_11N].num_channels = 0;
+
+ modes[A_11N].mode = MODE_IEEE80211A;
+ modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
+ modes[A_11N].rates = &rates[4];
+ modes[A_11N].num_rates = 9; /* just OFDM */
+ modes[A_11N].num_channels = 0;
+
+ priv->ieee_channels = channels;
+ priv->ieee_rates = rates;
+
+ iwl_init_hw_rates(priv, rates);
+
+ for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
+ ch = &priv->channel_info[i];
+
+ if (!is_channel_valid(ch)) {
+ IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
+ "skipping.\n",
+ ch->channel, is_channel_a_band(ch) ?
+ "5.2" : "2.4");
+ continue;
+ }
+
+ if (is_channel_a_band(ch)) {
+ geo_ch = &modes[A].channels[modes[A].num_channels++];
+ modes[A_11N].num_channels++;
+ } else {
+ geo_ch = &modes[B].channels[modes[B].num_channels++];
+ modes[G].num_channels++;
+ modes[G_11N].num_channels++;
+ }
+
+ geo_ch->freq = ieee80211chan2mhz(ch->channel);
+ geo_ch->chan = ch->channel;
+ geo_ch->power_level = ch->max_power_avg;
+ geo_ch->antenna_max = 0xff;
+
+ if (is_channel_valid(ch)) {
+ geo_ch->flag = IEEE80211_CHAN_W_SCAN;
+ if (ch->flags & EEPROM_CHANNEL_IBSS)
+ geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
+
+ if (ch->flags & EEPROM_CHANNEL_ACTIVE)
+ geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
+
+ if (ch->flags & EEPROM_CHANNEL_RADAR)
+ geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
+
+ if (ch->max_power_avg > priv->max_channel_txpower_limit)
+ priv->max_channel_txpower_limit =
+ ch->max_power_avg;
+ }
+
+ geo_ch->val = geo_ch->flag;
+ }
+
+ if ((modes[A].num_channels == 0) && priv->is_abg) {
+ printk(KERN_INFO DRV_NAME
+ ": Incorrectly detected BG card as ABG. Please send "
+ "your PCI ID 0x%04X:0x%04X to maintainer.\n",
+ priv->pci_dev->device, priv->pci_dev->subsystem_device);
+ priv->is_abg = 0;
+ }
+
+ printk(KERN_INFO DRV_NAME
+ ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
+ modes[G].num_channels, modes[A].num_channels);
+
+ /*
+ * NOTE: We register these in preference of order -- the
+ * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
+ * a phymode based on rates or AP capabilities but seems to
+ * configure it purely on if the channel being configured
+ * is supported by a mode -- and the first match is taken
+ */
+
+ if (modes[G].num_channels)
+ ieee80211_register_hwmode(priv->hw, &modes[G]);
+ if (modes[B].num_channels)
+ ieee80211_register_hwmode(priv->hw, &modes[B]);
+ if (modes[A].num_channels)
+ ieee80211_register_hwmode(priv->hw, &modes[A]);
+
+ priv->modes = modes;
+ set_bit(STATUS_GEO_CONFIGURED, &priv->status);
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * uCode download functions
+ *
+ ******************************************************************************/
+
+static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
+{
+ if (priv->ucode_code.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_code.len,
+ priv->ucode_code.v_addr,
+ priv->ucode_code.p_addr);
+ priv->ucode_code.v_addr = NULL;
+ }
+ if (priv->ucode_data.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_data.len,
+ priv->ucode_data.v_addr,
+ priv->ucode_data.p_addr);
+ priv->ucode_data.v_addr = NULL;
+ }
+ if (priv->ucode_data_backup.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_data_backup.len,
+ priv->ucode_data_backup.v_addr,
+ priv->ucode_data_backup.p_addr);
+ priv->ucode_data_backup.v_addr = NULL;
+ }
+ if (priv->ucode_init.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_init.len,
+ priv->ucode_init.v_addr,
+ priv->ucode_init.p_addr);
+ priv->ucode_init.v_addr = NULL;
+ }
+ if (priv->ucode_init_data.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_init_data.len,
+ priv->ucode_init_data.v_addr,
+ priv->ucode_init_data.p_addr);
+ priv->ucode_init_data.v_addr = NULL;
+ }
+ if (priv->ucode_boot.v_addr != NULL) {
+ pci_free_consistent(priv->pci_dev,
+ priv->ucode_boot.len,
+ priv->ucode_boot.v_addr,
+ priv->ucode_boot.p_addr);
+ priv->ucode_boot.v_addr = NULL;
+ }
+}
+
+/**
+ * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
+ * looking at all data.
+ */
+static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
+{
+ u32 val;
+ u32 save_len = len;
+ int rc = 0;
+ u32 errcnt;
+
+ IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ return rc;
+
+ iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
+
+ errcnt = 0;
+ for (; len > 0; len -= sizeof(u32), image++) {
+ /* read data comes through single port, auto-incr addr */
+ /* NOTE: Use the debugless read so we don't flood kernel log
+ * if IWL_DL_IO is set */
+ val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
+ if (val != le32_to_cpu(*image)) {
+ IWL_ERROR("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;
+ }
+ }
+
+ iwl_release_restricted_access(priv);
+
+ if (!errcnt)
+ IWL_DEBUG_INFO
+ ("ucode image in INSTRUCTION memory is good\n");
+
+ return rc;
+}
+
+
+/**
+ * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
+ * using sample data 100 bytes apart. If these sample points are good,
+ * it's a pretty good bet that everything between them is good, too.
+ */
+static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
+{
+ u32 val;
+ int rc = 0;
+ u32 errcnt = 0;
+ u32 i;
+
+ IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ return rc;
+
+ for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
+ /* read data comes through single port, auto-incr addr */
+ /* NOTE: Use the debugless read so we don't flood kernel log
+ * if IWL_DL_IO is set */
+ iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
+ i + RTC_INST_LOWER_BOUND);
+ val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
+ if (val != le32_to_cpu(*image)) {
+#if 0 /* Enable this if you want to see details */
+ IWL_ERROR("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;
+ }
+ }
+
+ iwl_release_restricted_access(priv);
+
+ return rc;
+}
+
+
+/**
+ * iwl_verify_ucode - determine which instruction image is in SRAM,
+ * and verify its contents
+ */
+static int iwl_verify_ucode(struct iwl_priv *priv)
+{
+ __le32 *image;
+ u32 len;
+ int rc = 0;
+
+ /* Try bootstrap */
+ image = (__le32 *)priv->ucode_boot.v_addr;
+ len = priv->ucode_boot.len;
+ rc = iwl_verify_inst_sparse(priv, image, len);
+ if (rc == 0) {
+ IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
+ return 0;
+ }
+
+ /* Try initialize */
+ image = (__le32 *)priv->ucode_init.v_addr;
+ len = priv->ucode_init.len;
+ rc = iwl_verify_inst_sparse(priv, image, len);
+ if (rc == 0) {
+ IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
+ return 0;
+ }
+
+ /* Try runtime/protocol */
+ image = (__le32 *)priv->ucode_code.v_addr;
+ len = priv->ucode_code.len;
+ rc = iwl_verify_inst_sparse(priv, image, len);
+ if (rc == 0) {
+ IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
+ return 0;
+ }
+
+ IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
+
+ /* Show first several data entries in instruction SRAM.
+ * Selection of bootstrap image is arbitrary. */
+ image = (__le32 *)priv->ucode_boot.v_addr;
+ len = priv->ucode_boot.len;
+ rc = iwl_verify_inst_full(priv, image, len);
+
+ return rc;
+}
+
+
+/* check contents of special bootstrap uCode SRAM */
+static int iwl_verify_bsm(struct iwl_priv *priv)
+{
+ __le32 *image = priv->ucode_boot.v_addr;
+ u32 len = priv->ucode_boot.len;
+ u32 reg;
+ u32 val;
+
+ IWL_DEBUG_INFO("Begin verify bsm\n");
+
+ /* verify BSM SRAM contents */
+ val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
+ for (reg = BSM_SRAM_LOWER_BOUND;
+ reg < BSM_SRAM_LOWER_BOUND + len;
+ reg += sizeof(u32), image ++) {
+ val = iwl_read_restricted_reg(priv, reg);
+ if (val != le32_to_cpu(*image)) {
+ IWL_ERROR("BSM uCode verification failed at "
+ "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
+ BSM_SRAM_LOWER_BOUND,
+ reg - BSM_SRAM_LOWER_BOUND, len,
+ val, le32_to_cpu(*image));
+ return -EIO;
+ }
+ }
+
+ IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
+
+ return 0;
+}
+
+/**
+ * iwl_load_bsm - Load bootstrap instructions
+ *
+ * BSM operation:
+ *
+ * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
+ * in special SRAM that does not power down during RFKILL. When powering back
+ * up after power-saving sleeps (or during initial uCode load), the BSM loads
+ * the bootstrap program into the on-board processor, and starts it.
+ *
+ * The bootstrap program loads (via DMA) instructions and data for a new
+ * program from host DRAM locations indicated by the host driver in the
+ * BSM_DRAM_* registers. Once the new program is loaded, it starts
+ * automatically.
+ *
+ * When initializing the NIC, the host driver points the BSM to the
+ * "initialize" uCode image. This uCode sets up some internal data, then
+ * notifies host via "initialize alive" that it is complete.
+ *
+ * The host then replaces the BSM_DRAM_* pointer values to point to the
+ * normal runtime uCode instructions and a backup uCode data cache buffer
+ * (filled initially with starting data values for the on-board processor),
+ * then triggers the "initialize" uCode to load and launch the runtime uCode,
+ * which begins normal operation.
+ *
+ * When doing a power-save shutdown, runtime uCode saves data SRAM into
+ * the backup data cache in DRAM before SRAM is powered down.
+ *
+ * When powering back up, the BSM loads the bootstrap program. This reloads
+ * the runtime uCode instructions and the backup data cache into SRAM,
+ * and re-launches the runtime uCode from where it left off.
+ */
+static int iwl_load_bsm(struct iwl_priv *priv)
+{
+ __le32 *image = priv->ucode_boot.v_addr;
+ u32 len = priv->ucode_boot.len;
+ dma_addr_t pinst;
+ dma_addr_t pdata;
+ u32 inst_len;
+ u32 data_len;
+ int rc;
+ int i;
+ u32 done;
+ u32 reg_offset;
+
+ IWL_DEBUG_INFO("Begin load bsm\n");
+
+ /* make sure bootstrap program is no larger than BSM's SRAM size */
+ if (len > IWL_MAX_BSM_SIZE)
+ return -EINVAL;
+
+ /* Tell bootstrap uCode where to find the "Initialize" uCode
+ * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
+ * NOTE: iwl_initialize_alive_start() will replace these values,
+ * after the "initialize" uCode has run, to point to
+ * runtime/protocol instructions and backup data cache. */
+ pinst = priv->ucode_init.p_addr >> 4;
+ pdata = priv->ucode_init_data.p_addr >> 4;
+ inst_len = priv->ucode_init.len;
+ data_len = priv->ucode_init_data.len;
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ return rc;
+
+ iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
+ iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+ iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
+ iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
+
+ /* Fill BSM memory with bootstrap instructions */
+ for (reg_offset = BSM_SRAM_LOWER_BOUND;
+ reg_offset < BSM_SRAM_LOWER_BOUND + len;
+ reg_offset += sizeof(u32), image++)
+ _iwl_write_restricted_reg(priv, reg_offset,
+ le32_to_cpu(*image));
+
+ rc = iwl_verify_bsm(priv);
+ if (rc) {
+ iwl_release_restricted_access(priv);
+ return rc;
+ }
+
+ /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
+ iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
+ iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
+ RTC_INST_LOWER_BOUND);
+ iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
+
+ /* Load bootstrap code into instruction SRAM now,
+ * to prepare to load "initialize" uCode */
+ iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
+ BSM_WR_CTRL_REG_BIT_START);
+
+ /* Wait for load of bootstrap uCode to finish */
+ for (i = 0; i < 100; i++) {
+ done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
+ if (!(done & BSM_WR_CTRL_REG_BIT_START))
+ break;
+ udelay(10);
+ }
+ if (i < 100)
+ IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
+ else {
+ IWL_ERROR("BSM write did not complete!\n");
+ return -EIO;
+ }
+
+ /* Enable future boot loads whenever power management unit triggers it
+ * (e.g. when powering back up after power-save shutdown) */
+ iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
+ BSM_WR_CTRL_REG_BIT_START_EN);
+
+ iwl_release_restricted_access(priv);
+
+ return 0;
+}
+
+static void iwl_nic_start(struct iwl_priv *priv)
+{
+ /* Remove all resets to allow NIC to operate */
+ iwl_write32(priv, CSR_RESET, 0);
+}
+
+/**
+ * iwl_read_ucode - Read uCode images from disk file.
+ *
+ * Copy into buffers for card to fetch via bus-mastering
+ */
+static int iwl_read_ucode(struct iwl_priv *priv)
+{
+ struct iwl_ucode *ucode;
+ int rc = 0;
+ const struct firmware *ucode_raw;
+ const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
+ u8 *src;
+ size_t len;
+ u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
+
+ /* Ask kernel firmware_class module to get the boot firmware off disk.
+ * request_firmware() is synchronous, file is in memory on return. */
+ rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
+ if (rc < 0) {
+ IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
+ goto error;
+ }
+
+ IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
+ name, ucode_raw->size);
+
+ /* Make sure that we got at least our header! */
+ if (ucode_raw->size < sizeof(*ucode)) {
+ IWL_ERROR("File size way too small!\n");
+ rc = -EINVAL;
+ goto err_release;
+ }
+
+ /* Data from ucode file: header followed by uCode images */
+ ucode = (void *)ucode_raw->data;
+
+ ver = le32_to_cpu(ucode->ver);
+ inst_size = le32_to_cpu(ucode->inst_size);
+ data_size = le32_to_cpu(ucode->data_size);
+ init_size = le32_to_cpu(ucode->init_size);
+ init_data_size = le32_to_cpu(ucode->init_data_size);
+ boot_size = le32_to_cpu(ucode->boot_size);
+
+ IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
+ IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
+ inst_size);
+ IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
+ data_size);
+ IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
+ init_size);
+ IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
+ init_data_size);
+ IWL_DEBUG_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 < sizeof(*ucode) +
+ inst_size + data_size + init_size +
+ init_data_size + boot_size) {
+
+ IWL_DEBUG_INFO("uCode file size %d too small\n",
+ (int)ucode_raw->size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+
+ /* Verify that uCode images will fit in card's SRAM */
+ if (inst_size > IWL_MAX_INST_SIZE) {
+ IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
+ (int)inst_size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+
+ if (data_size > IWL_MAX_DATA_SIZE) {
+ IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
+ (int)data_size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+ if (init_size > IWL_MAX_INST_SIZE) {
+ IWL_DEBUG_INFO
+ ("uCode init instr len %d too large to fit in card\n",
+ (int)init_size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+ if (init_data_size > IWL_MAX_DATA_SIZE) {
+ IWL_DEBUG_INFO
+ ("uCode init data len %d too large to fit in card\n",
+ (int)init_data_size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+ if (boot_size > IWL_MAX_BSM_SIZE) {
+ IWL_DEBUG_INFO
+ ("uCode boot instr len %d too large to fit in bsm\n",
+ (int)boot_size);
+ rc = -EINVAL;
+ goto err_release;
+ }
+
+ /* Allocate ucode buffers for card's bus-master loading ... */
+
+ /* Runtime instructions and 2 copies of data:
+ * 1) unmodified from disk
+ * 2) backup cache for save/restore during power-downs */
+ priv->ucode_code.len = inst_size;
+ priv->ucode_code.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_code.len,
+ &(priv->ucode_code.p_addr));
+
+ priv->ucode_data.len = data_size;
+ priv->ucode_data.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_data.len,
+ &(priv->ucode_data.p_addr));
+
+ priv->ucode_data_backup.len = data_size;
+ priv->ucode_data_backup.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_data_backup.len,
+ &(priv->ucode_data_backup.p_addr));
+
+
+ /* Initialization instructions and data */
+ priv->ucode_init.len = init_size;
+ priv->ucode_init.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_init.len,
+ &(priv->ucode_init.p_addr));
+
+ priv->ucode_init_data.len = init_data_size;
+ priv->ucode_init_data.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_init_data.len,
+ &(priv->ucode_init_data.p_addr));
+
+ /* Bootstrap (instructions only, no data) */
+ priv->ucode_boot.len = boot_size;
+ priv->ucode_boot.v_addr =
+ pci_alloc_consistent(priv->pci_dev,
+ priv->ucode_boot.len,
+ &(priv->ucode_boot.p_addr));
+
+ if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
+ !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
+ !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
+ goto err_pci_alloc;
+
+ /* Copy images into buffers for card's bus-master reads ... */
+
+ /* Runtime instructions (first block of data in file) */
+ src = &ucode->data[0];
+ len = priv->ucode_code.len;
+ IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
+ (int)len);
+ memcpy(priv->ucode_code.v_addr, src, len);
+ IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
+ priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
+
+ /* Runtime data (2nd block)
+ * NOTE: Copy into backup buffer will be done in iwl_up() */
+ src = &ucode->data[inst_size];
+ len = priv->ucode_data.len;
+ IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
+ (int)len);
+ memcpy(priv->ucode_data.v_addr, src, len);
+ memcpy(priv->ucode_data_backup.v_addr, src, len);
+
+ /* Initialization instructions (3rd block) */
+ if (init_size) {
+ src = &ucode->data[inst_size + data_size];
+ len = priv->ucode_init.len;
+ IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
+ (int)len);
+ memcpy(priv->ucode_init.v_addr, src, len);
+ }
+
+ /* Initialization data (4th block) */
+ if (init_data_size) {
+ src = &ucode->data[inst_size + data_size + init_size];
+ len = priv->ucode_init_data.len;
+ IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
+ (int)len);
+ memcpy(priv->ucode_init_data.v_addr, src, len);
+ }
+
+ /* Bootstrap instructions (5th block) */
+ src = &ucode->data[inst_size + data_size + init_size + init_data_size];
+ len = priv->ucode_boot.len;
+ IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
+ (int)len);
+ memcpy(priv->ucode_boot.v_addr, src, len);
+
+ /* We have our copies now, allow OS release its copies */
+ release_firmware(ucode_raw);
+ return 0;
+
+ err_pci_alloc:
+ IWL_ERROR("failed to allocate pci memory\n");
+ rc = -ENOMEM;
+ iwl_dealloc_ucode_pci(priv);
+
+ err_release:
+ release_firmware(ucode_raw);
+
+ error:
+ return rc;
+}
+
+
+/**
+ * iwl_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 iwl_set_ucode_ptrs(struct iwl_priv *priv)
+{
+ dma_addr_t pinst;
+ dma_addr_t pdata;
+ int rc = 0;
+ unsigned long flags;
+
+ /* bits 35:4 for 4965 */
+ pinst = priv->ucode_code.p_addr >> 4;
+ pdata = priv->ucode_data_backup.p_addr >> 4;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ /* Tell bootstrap uCode where to find image to load */
+ iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
+ iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+ iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
+ priv->ucode_data.len);
+
+ /* Inst bytecount must be last to set up, bit 31 signals uCode
+ * that all new ptr/size info is in place */
+ iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
+ priv->ucode_code.len | BSM_DRAM_INST_LOAD);
+
+ iwl_release_restricted_access(priv);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
+
+ return rc;
+}
+
+/**
+ * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
+ *
+ * Called after REPLY_ALIVE notification received from "initialize" uCode.
+ *
+ * The 4965 "initialize" ALIVE reply contains calibration data for:
+ * Voltage, temperature, and MIMO tx gain correction, now stored in priv
+ * (3945 does not contain this data).
+ *
+ * Tell "initialize" uCode to go ahead and load the runtime uCode.
+*/
+static void iwl_init_alive_start(struct iwl_priv *priv)
+{
+ /* Check alive response for "valid" sign from uCode */
+ if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
+ /* We had an error bringing up the hardware, so take it
+ * all the way back down so we can try again */
+ IWL_DEBUG_INFO("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 (iwl_verify_ucode(priv)) {
+ /* Runtime instruction load was bad;
+ * take it all the way back down so we can try again */
+ IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
+ goto restart;
+ }
+
+ /* Calculate temperature */
+ priv->temperature = iwl4965_get_temperature(priv);
+
+ /* Send pointers to protocol/runtime uCode image ... init code will
+ * load and launch runtime uCode, which will send us another "Alive"
+ * notification. */
+ IWL_DEBUG_INFO("Initialization Alive received.\n");
+ if (iwl_set_ucode_ptrs(priv)) {
+ /* Runtime instruction load won't happen;
+ * take it all the way back down so we can try again */
+ IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
+ goto restart;
+ }
+ return;
+
+ restart:
+ queue_work(priv->workqueue, &priv->restart);
+}
+
+
+/**
+ * iwl_alive_start - called after REPLY_ALIVE notification received
+ * from protocol/runtime uCode (initialization uCode's
+ * Alive gets handled by iwl_init_alive_start()).
+ */
+static void iwl_alive_start(struct iwl_priv *priv)
+{
+ int rc = 0;
+
+ IWL_DEBUG_INFO("Runtime Alive received.\n");
+
+ if (priv->card_alive.is_valid != UCODE_VALID_OK) {
+ /* We had an error bringing up the hardware, so take it
+ * all the way back down so we can try again */
+ IWL_DEBUG_INFO("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 (iwl_verify_ucode(priv)) {
+ /* Runtime instruction load was bad;
+ * take it all the way back down so we can try again */
+ IWL_DEBUG_INFO("Bad runtime uCode load.\n");
+ goto restart;
+ }
+
+ iwl_clear_stations_table(priv);
+
+ rc = iwl4965_alive_notify(priv);
+ if (rc) {
+ IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
+ rc);
+ goto restart;
+ }
+
+ /* After the ALIVE response, we can process host commands */
+ set_bit(STATUS_ALIVE, &priv->status);
+
+ /* Clear out the uCode error bit if it is set */
+ clear_bit(STATUS_FW_ERROR, &priv->status);
+
+ rc = iwl_init_channel_map(priv);
+ if (rc) {
+ IWL_ERROR("initializing regulatory failed: %d\n", rc);
+ return;
+ }
+
+ iwl_init_geos(priv);
+
+ if (iwl_is_rfkill(priv))
+ return;
+
+ if (!priv->mac80211_registered) {
+ /* Unlock so any user space entry points can call back into
+ * the driver without a deadlock... */
+ mutex_unlock(&priv->mutex);
+ iwl_rate_control_register(priv->hw);
+ rc = ieee80211_register_hw(priv->hw);
+ priv->hw->conf.beacon_int = 100;
+ mutex_lock(&priv->mutex);
+
+ if (rc) {
+ IWL_ERROR("Failed to register network "
+ "device (error %d)\n", rc);
+ return;
+ }
+
+ priv->mac80211_registered = 1;
+
+ iwl_reset_channel_flag(priv);
+ } else
+ ieee80211_start_queues(priv->hw);
+
+ priv->active_rate = priv->rates_mask;
+ priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
+
+ iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
+
+ if (iwl_is_associated(priv)) {
+ struct iwl_rxon_cmd *active_rxon =
+ (struct iwl_rxon_cmd *)(&priv->active_rxon);
+
+ memcpy(&priv->staging_rxon, &priv->active_rxon,
+ sizeof(priv->staging_rxon));
+ active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ } else {
+ /* Initialize our rx_config data */
+ iwl_connection_init_rx_config(priv);
+ memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
+ }
+
+ /* Configure BT coexistence */
+ iwl_send_bt_config(priv);
+
+ /* Configure the adapter for unassociated operation */
+ iwl_commit_rxon(priv);
+
+ /* At this point, the NIC is initialized and operational */
+ priv->notif_missed_beacons = 0;
+ set_bit(STATUS_READY, &priv->status);
+
+ iwl4965_rf_kill_ct_config(priv);
+ IWL_DEBUG_INFO("ALIVE processing complete.\n");
+
+ if (priv->error_recovering)
+ iwl_error_recovery(priv);
+
+ return;
+
+ restart:
+ queue_work(priv->workqueue, &priv->restart);
+}
+
+static void iwl_cancel_deferred_work(struct iwl_priv *priv);
+
+static void __iwl_down(struct iwl_priv *priv)
+{
+ unsigned long flags;
+ int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
+ struct ieee80211_conf *conf = NULL;
+
+ IWL_DEBUG_INFO(DRV_NAME " is going down\n");
+
+ conf = ieee80211_get_hw_conf(priv->hw);
+
+ if (!exit_pending)
+ set_bit(STATUS_EXIT_PENDING, &priv->status);
+
+ iwl_clear_stations_table(priv);
+
+ /* Unblock any waiting calls */
+ wake_up_interruptible_all(&priv->wait_command_queue);
+
+ iwl_cancel_deferred_work(priv);
+
+ /* Wipe out the EXIT_PENDING status bit if we are not actually
+ * exiting the module */
+ if (!exit_pending)
+ clear_bit(STATUS_EXIT_PENDING, &priv->status);
+
+ /* stop and reset the on-board processor */
+ iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
+
+ /* tell the device to stop sending interrupts */
+ iwl_disable_interrupts(priv);
+
+ if (priv->mac80211_registered)
+ ieee80211_stop_queues(priv->hw);
+
+ /* If we have not previously called iwl_init() then
+ * clear all bits but the RF Kill and SUSPEND bits and return */
+ if (!iwl_is_init(priv)) {
+ priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
+ STATUS_RF_KILL_HW |
+ test_bit(STATUS_RF_KILL_SW, &priv->status) <<
+ STATUS_RF_KILL_SW |
+ test_bit(STATUS_IN_SUSPEND, &priv->status) <<
+ STATUS_IN_SUSPEND;
+ goto exit;
+ }
+
+ /* ...otherwise clear out all the status bits but the RF Kill and
+ * SUSPEND bits and continue taking the NIC down. */
+ priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
+ STATUS_RF_KILL_HW |
+ test_bit(STATUS_RF_KILL_SW, &priv->status) <<
+ STATUS_RF_KILL_SW |
+ test_bit(STATUS_IN_SUSPEND, &priv->status) <<
+ STATUS_IN_SUSPEND |
+ test_bit(STATUS_FW_ERROR, &priv->status) <<
+ STATUS_FW_ERROR;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ iwl_hw_txq_ctx_stop(priv);
+ iwl_hw_rxq_stop(priv);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!iwl_grab_restricted_access(priv)) {
+ iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT);
+ iwl_release_restricted_access(priv);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ udelay(5);
+
+ iwl_hw_nic_stop_master(priv);
+ iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+ iwl_hw_nic_reset(priv);
+
+ exit:
+ memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
+
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+ priv->ibss_beacon = NULL;
+
+ /* clear out any free frames */
+ iwl_clear_free_frames(priv);
+}
+
+static void iwl_down(struct iwl_priv *priv)
+{
+ mutex_lock(&priv->mutex);
+ __iwl_down(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+#define MAX_HW_RESTARTS 5
+
+static int __iwl_up(struct iwl_priv *priv)
+{
+ int rc, i;
+ u32 hw_rf_kill = 0;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+ IWL_WARNING("Exit pending; will not bring the NIC up\n");
+ return -EIO;
+ }
+
+ if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
+ IWL_WARNING("Radio disabled by SW RF kill (module "
+ "parameter)\n");
+ return 0;
+ }
+
+ iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
+
+ rc = iwl_hw_nic_init(priv);
+ if (rc) {
+ IWL_ERROR("Unable to int nic\n");
+ return rc;
+ }
+
+ /* make sure rfkill handshake bits are cleared */
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+
+ /* clear (again), then enable host interrupts */
+ iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
+ iwl_enable_interrupts(priv);
+
+ /* really make sure rfkill handshake bits are cleared */
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+
+ /* Copy original ucode data image from disk into backup cache.
+ * This will be used to initialize the on-board processor's
+ * data SRAM for a clean start when the runtime program first loads. */
+ memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
+ priv->ucode_data.len);
+
+ /* If platform's RF_KILL switch is set to KILL,
+ * wait for BIT_INT_RF_KILL interrupt before loading uCode
+ * and getting things started */
+ if (!(iwl_read32(priv, CSR_GP_CNTRL) &
+ CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
+ hw_rf_kill = 1;
+
+ if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
+ IWL_WARNING("Radio disabled by HW RF Kill switch\n");
+ return 0;
+ }
+
+ for (i = 0; i < MAX_HW_RESTARTS; i++) {
+
+ iwl_clear_stations_table(priv);
+
+ /* load bootstrap state machine,
+ * load bootstrap program into processor's memory,
+ * prepare to load the "initialize" uCode */
+ rc = iwl_load_bsm(priv);
+
+ if (rc) {
+ IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
+ continue;
+ }
+
+ /* start card; "initialize" will load runtime ucode */
+ iwl_nic_start(priv);
+
+ /* MAC Address location in EEPROM same for 3945/4965 */
+ get_eeprom_mac(priv, priv->mac_addr);
+ IWL_DEBUG_INFO("MAC address: " MAC_FMT "\n",
+ MAC_ARG(priv->mac_addr));
+
+ SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
+
+ IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
+
+ return 0;
+ }
+
+ set_bit(STATUS_EXIT_PENDING, &priv->status);
+ __iwl_down(priv);
+
+ /* tried to restart and config the device for as long as our
+ * patience could withstand */
+ IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
+ return -EIO;
+}
+
+
+/*****************************************************************************
+ *
+ * Workqueue callbacks
+ *
+ *****************************************************************************/
+
+static void iwl_bg_init_alive_start(struct work_struct *data)
+{
+ struct iwl_priv *priv =
+ container_of(data, struct iwl_priv, init_alive_start.work);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ iwl_init_alive_start(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_alive_start(struct work_struct *data)
+{
+ struct iwl_priv *priv =
+ container_of(data, struct iwl_priv, alive_start.work);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ iwl_alive_start(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_rf_kill(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
+
+ wake_up_interruptible(&priv->wait_command_queue);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+
+ if (!iwl_is_rfkill(priv)) {
+ IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
+ "HW and/or SW RF Kill no longer active, restarting "
+ "device\n");
+ if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
+ queue_work(priv->workqueue, &priv->restart);
+ } else {
+
+ if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
+ IWL_DEBUG_RF_KILL("Can not turn radio back on - "
+ "disabled by SW switch\n");
+ else
+ IWL_WARNING("Radio Frequency Kill Switch is On:\n"
+ "Kill switch must be turned off for "
+ "wireless networking to work.\n");
+ }
+ mutex_unlock(&priv->mutex);
+}
+
+#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
+
+static void iwl_bg_scan_check(struct work_struct *data)
+{
+ struct iwl_priv *priv =
+ container_of(data, struct iwl_priv, scan_check.work);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ if (test_bit(STATUS_SCANNING, &priv->status) ||
+ test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
+ "Scan completion watchdog resetting adapter (%dms)\n",
+ jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
+ if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
+ queue_work(priv->workqueue, &priv->restart);
+ }
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_request_scan(struct work_struct *data)
+{
+ struct iwl_priv *priv =
+ container_of(data, struct iwl_priv, request_scan);
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_SCAN_CMD,
+ .len = sizeof(struct iwl_scan_cmd),
+ .meta.flags = CMD_SIZE_HUGE,
+ };
+ int rc = 0;
+ struct iwl_scan_cmd *scan;
+ struct ieee80211_conf *conf = NULL;
+ u8 direct_mask;
+ int phymode;
+
+ conf = ieee80211_get_hw_conf(priv->hw);
+
+ mutex_lock(&priv->mutex);
+
+ if (!iwl_is_ready(priv)) {
+ IWL_WARNING("request scan called when driver not ready.\n");
+ goto done;
+ }
+
+ /* Make sure the scan wasn't cancelled before this queued work
+ * was given the chance to run... */
+ if (!test_bit(STATUS_SCANNING, &priv->status))
+ goto done;
+
+ /* This should never be called or scheduled if there is currently
+ * a scan active in the hardware. */
+ if (test_bit(STATUS_SCAN_HW, &priv->status)) {
+ IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
+ "Ignoring second request.\n");
+ rc = -EIO;
+ goto done;
+ }
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
+ IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
+ goto done;
+ }
+
+ if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
+ IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
+ goto done;
+ }
+
+ if (iwl_is_rfkill(priv)) {
+ IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
+ goto done;
+ }
+
+ if (!test_bit(STATUS_READY, &priv->status)) {
+ IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
+ goto done;
+ }
+
+ if (!priv->scan_bands) {
+ IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
+ goto done;
+ }
+
+ if (!priv->scan) {
+ priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
+ IWL_MAX_SCAN_SIZE, GFP_KERNEL);
+ if (!priv->scan) {
+ rc = -ENOMEM;
+ goto done;
+ }
+ }
+ scan = priv->scan;
+ memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
+
+ scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
+ scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
+
+ if (iwl_is_associated(priv)) {
+ u16 interval = 0;
+ u32 extra;
+ u32 suspend_time = 100;
+ u32 scan_suspend_time = 100;
+ unsigned long flags;
+
+ IWL_DEBUG_INFO("Scanning while associated...\n");
+
+ spin_lock_irqsave(&priv->lock, flags);
+ interval = priv->beacon_int;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ scan->suspend_time = 0;
+ scan->max_out_time = cpu_to_le32(600 * 1024);
+ if (!interval)
+ interval = suspend_time;
+
+ extra = (suspend_time / interval) << 22;
+ scan_suspend_time = (extra |
+ ((suspend_time % interval) * 1024));
+ scan->suspend_time = cpu_to_le32(scan_suspend_time);
+ IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
+ scan_suspend_time, interval);
+ }
+
+ /* We should add the ability for user to lock to PASSIVE ONLY */
+ if (priv->one_direct_scan) {
+ IWL_DEBUG_SCAN
+ ("Kicking off one direct scan for '%s'\n",
+ iwl_escape_essid(priv->direct_ssid,
+ priv->direct_ssid_len));
+ scan->direct_scan[0].id = WLAN_EID_SSID;
+ scan->direct_scan[0].len = priv->direct_ssid_len;
+ memcpy(scan->direct_scan[0].ssid,
+ priv->direct_ssid, priv->direct_ssid_len);
+ direct_mask = 1;
+ } else if (!iwl_is_associated(priv)) {
+ scan->direct_scan[0].id = WLAN_EID_SSID;
+ scan->direct_scan[0].len = priv->essid_len;
+ memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
+ direct_mask = 1;
+ } else
+ direct_mask = 0;
+
+ /* 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.len = cpu_to_le16(
+ iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
+ IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
+ scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
+ scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
+ scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
+
+ /* flags + rate selection */
+
+ scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
+
+ switch (priv->scan_bands) {
+ case 2:
+ scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
+ scan->tx_cmd.rate_n_flags =
+ iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
+ RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
+
+ scan->good_CRC_th = 0;
+ phymode = MODE_IEEE80211G;
+ break;
+
+ case 1:
+ scan->tx_cmd.rate_n_flags =
+ iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
+ RATE_MCS_ANT_B_MSK);
+ scan->good_CRC_th = IWL_GOOD_CRC_TH;
+ phymode = MODE_IEEE80211A;
+ break;
+
+ default:
+ IWL_WARNING("Invalid scan band count\n");
+ goto done;
+ }
+
+ /* select Rx chains */
+
+ /* Force use of chains B and C (0x6) for scan Rx.
+ * Avoid A (0x1) because of its off-channel reception on A-band.
+ * MIMO is not used here, but value is required to make uCode happy. */
+ scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
+ cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
+ (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
+ (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
+ scan->filter_flags = RXON_FILTER_PROMISC_MSK;
+
+ if (direct_mask)
+ IWL_DEBUG_SCAN
+ ("Initiating direct scan for %s.\n",
+ iwl_escape_essid(priv->essid, priv->essid_len));
+ else
+ IWL_DEBUG_SCAN("Initiating indirect scan.\n");
+
+ scan->channel_count =
+ iwl_get_channels_for_scan(
+ priv, phymode, 1, /* active */
+ direct_mask,
+ (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
+
+ cmd.len += le16_to_cpu(scan->tx_cmd.len) +
+ scan->channel_count * sizeof(struct iwl_scan_channel);
+ cmd.data = scan;
+ scan->len = cpu_to_le16(cmd.len);
+
+ set_bit(STATUS_SCAN_HW, &priv->status);
+ rc = iwl_send_cmd_sync(priv, &cmd);
+ if (rc)
+ goto done;
+
+ queue_delayed_work(priv->workqueue, &priv->scan_check,
+ IWL_SCAN_CHECK_WATCHDOG);
+
+ mutex_unlock(&priv->mutex);
+ return;
+
+ done:
+ /* inform mac80211 sacn aborted */
+ queue_work(priv->workqueue, &priv->scan_completed);
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_up(struct work_struct *data)
+{
+ struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ __iwl_up(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_restart(struct work_struct *data)
+{
+ struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ iwl_down(priv);
+ queue_work(priv->workqueue, &priv->up);
+}
+
+static void iwl_bg_rx_replenish(struct work_struct *data)
+{
+ struct iwl_priv *priv =
+ container_of(data, struct iwl_priv, rx_replenish);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ iwl_rx_replenish(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_post_associate(struct work_struct *data)
+{
+ struct iwl_priv *priv = container_of(data, struct iwl_priv,
+ post_associate.work);
+
+ int rc = 0;
+ struct ieee80211_conf *conf = NULL;
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
+ IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
+ return;
+ }
+
+ IWL_DEBUG_ASSOC("Associated as %d to: " MAC_FMT "\n",
+ priv->assoc_id, MAC_ARG(priv->active_rxon.bssid_addr));
+
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+
+ conf = ieee80211_get_hw_conf(priv->hw);
+
+ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ iwl_commit_rxon(priv);
+
+ memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
+ iwl_setup_rxon_timing(priv);
+ rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
+ sizeof(priv->rxon_timing), &priv->rxon_timing);
+ if (rc)
+ IWL_WARNING("REPLY_RXON_TIMING failed - "
+ "Attempting to continue.\n");
+
+ priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
+
+#ifdef CONFIG_IWLWIFI_HT
+ if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
+ iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
+ else {
+ priv->active_rate_ht[0] = 0;
+ priv->active_rate_ht[1] = 0;
+ priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
+ }
+#endif /* CONFIG_IWLWIFI_HT*/
+ iwl4965_set_rxon_chain(priv);
+ priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
+
+ IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
+ priv->assoc_id, priv->beacon_int);
+
+ if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
+ priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+ else
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+
+ if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
+ if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
+ priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
+ else
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
+ priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+
+ }
+
+ iwl_commit_rxon(priv);
+
+ switch (priv->iw_mode) {
+ case IEEE80211_IF_TYPE_STA:
+ iwl_rate_scale_init(priv->hw, IWL_AP_ID);
+ break;
+
+ case IEEE80211_IF_TYPE_IBSS:
+
+ /* clear out the station table */
+ iwl_clear_stations_table(priv);
+
+ iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
+ iwl_rxon_add_station(priv, priv->bssid, 0);
+ iwl_rate_scale_init(priv->hw, IWL_STA_ID);
+ iwl_send_beacon_cmd(priv);
+
+ break;
+
+ default:
+ IWL_ERROR("%s Should not be called in %d mode\n",
+ __FUNCTION__, priv->iw_mode);
+ break;
+ }
+
+ iwl_sequence_reset(priv);
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ /* Enable Rx differential gain and sensitivity calibrations */
+ iwl4965_chain_noise_reset(priv);
+ priv->start_calib = 1;
+#endif /* CONFIG_IWLWIFI_SENSITIVITY */
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
+ priv->assoc_station_added = 1;
+
+#ifdef CONFIG_IWLWIFI_QOS
+ iwl_activate_qos(priv, 0);
+#endif /* CONFIG_IWLWIFI_QOS */
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_abort_scan(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ abort_scan);
+
+ if (!iwl_is_ready(priv))
+ return;
+
+ mutex_lock(&priv->mutex);
+
+ set_bit(STATUS_SCAN_ABORTING, &priv->status);
+ iwl_send_scan_abort(priv);
+
+ mutex_unlock(&priv->mutex);
+}
+
+static void iwl_bg_scan_completed(struct work_struct *work)
+{
+ struct iwl_priv *priv =
+ container_of(work, struct iwl_priv, scan_completed);
+
+ IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ ieee80211_scan_completed(priv->hw);
+
+ /* Since setting the TXPOWER may have been deferred while
+ * performing the scan, fire one off */
+ mutex_lock(&priv->mutex);
+ iwl_hw_reg_send_txpower(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+/*****************************************************************************
+ *
+ * mac80211 entry point functions
+ *
+ *****************************************************************************/
+
+static int iwl_mac_open(struct ieee80211_hw *hw)
+{
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ /* we should be verifying the device is ready to be opened */
+ mutex_lock(&priv->mutex);
+
+ priv->is_open = 1;
+
+ if (!iwl_is_rfkill(priv))
+ ieee80211_start_queues(priv->hw);
+
+ mutex_unlock(&priv->mutex);
+ IWL_DEBUG_MAC80211("leave\n");
+ return 0;
+}
+
+static int iwl_mac_stop(struct ieee80211_hw *hw)
+{
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter\n");
+ priv->is_open = 0;
+ /*netif_stop_queue(dev); */
+ flush_workqueue(priv->workqueue);
+ IWL_DEBUG_MAC80211("leave\n");
+
+ return 0;
+}
+
+static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ieee80211_tx_control *ctl)
+{
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
+ IWL_DEBUG_MAC80211("leave - monitor\n");
+ return -1;
+ }
+
+ IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
+ ctl->tx_rate);
+
+ if (iwl_tx_skb(priv, skb, ctl))
+ dev_kfree_skb_any(skb);
+
+ IWL_DEBUG_MAC80211("leave\n");
+ return 0;
+}
+
+static int iwl_mac_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct iwl_priv *priv = hw->priv;
+ unsigned long flags;
+
+ IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
+ if (conf->mac_addr)
+ IWL_DEBUG_MAC80211("enter: MAC " MAC_FMT "\n",
+ MAC_ARG(conf->mac_addr));
+
+ if (priv->interface_id) {
+ IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
+ return 0;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->interface_id = conf->if_id;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ mutex_lock(&priv->mutex);
+ iwl_set_mode(priv, conf->type);
+
+ IWL_DEBUG_MAC80211("leave\n");
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+/**
+ * iwl_mac_config - mac80211 config callback
+ *
+ * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
+ * be set inappropriately and the driver currently sets the hardware up to
+ * use it whenever needed.
+ */
+static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
+{
+ struct iwl_priv *priv = hw->priv;
+ const struct iwl_channel_info *ch_info;
+ unsigned long flags;
+
+ mutex_lock(&priv->mutex);
+ IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
+
+ if (!iwl_is_ready(priv)) {
+ IWL_DEBUG_MAC80211("leave - not ready\n");
+ mutex_unlock(&priv->mutex);
+ return -EIO;
+ }
+
+ /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
+ * what is exposed through include/ declrations */
+ if (unlikely(!iwl_param_disable_hw_scan &&
+ test_bit(STATUS_SCANNING, &priv->status))) {
+ IWL_DEBUG_MAC80211("leave - scanning\n");
+ mutex_unlock(&priv->mutex);
+ return 0;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
+ if (!is_channel_valid(ch_info)) {
+ IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
+ conf->channel, conf->phymode);
+ IWL_DEBUG_MAC80211("leave - invalid channel\n");
+ spin_unlock_irqrestore(&priv->lock, flags);
+ mutex_unlock(&priv->mutex);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_IWLWIFI_HT
+ /* if we are switching fron ht to 2.4 clear flags
+ * from any ht related info since 2.4 does not
+ * support ht */
+ if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
+#ifdef IEEE80211_CONF_CHANNEL_SWITCH
+ && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
+#endif
+ )
+ priv->staging_rxon.flags = 0;
+#endif /* CONFIG_IWLWIFI_HT */
+
+ iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
+
+ iwl_set_flags_for_phymode(priv, conf->phymode);
+
+ /* The list of supported rates and rate mask can be different
+ * for each phymode; since the phymode may have changed, reset
+ * the rate mask to what mac80211 lists */
+ iwl_set_rate(priv);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+#ifdef IEEE80211_CONF_CHANNEL_SWITCH
+ if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
+ iwl_hw_channel_switch(priv, conf->channel);
+ mutex_unlock(&priv->mutex);
+ return 0;
+ }
+#endif
+
+ iwl_radio_kill_sw(priv, !conf->radio_enabled);
+
+ if (!conf->radio_enabled) {
+ IWL_DEBUG_MAC80211("leave - radio disabled\n");
+ mutex_unlock(&priv->mutex);
+ return 0;
+ }
+
+ if (iwl_is_rfkill(priv)) {
+ IWL_DEBUG_MAC80211("leave - RF kill\n");
+ mutex_unlock(&priv->mutex);
+ return -EIO;
+ }
+
+ iwl_set_rate(priv);
+
+ if (memcmp(&priv->active_rxon,
+ &priv->staging_rxon, sizeof(priv->staging_rxon)))
+ iwl_commit_rxon(priv);
+ else
+ IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
+
+ IWL_DEBUG_MAC80211("leave\n");
+
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+static void iwl_config_ap(struct iwl_priv *priv)
+{
+ int rc = 0;
+
+ if (priv->status & STATUS_EXIT_PENDING)
+ return;
+
+ /* The following should be done only at AP bring up */
+ if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
+
+ /* RXON - unassoc (to set timing command) */
+ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ iwl_commit_rxon(priv);
+
+ /* RXON Timing */
+ memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
+ iwl_setup_rxon_timing(priv);
+ rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
+ sizeof(priv->rxon_timing), &priv->rxon_timing);
+ if (rc)
+ IWL_WARNING("REPLY_RXON_TIMING failed - "
+ "Attempting to continue.\n");
+
+ iwl4965_set_rxon_chain(priv);
+
+ /* FIXME: what should be the assoc_id for AP? */
+ priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
+ if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
+ priv->staging_rxon.flags |=
+ RXON_FLG_SHORT_PREAMBLE_MSK;
+ else
+ priv->staging_rxon.flags &=
+ ~RXON_FLG_SHORT_PREAMBLE_MSK;
+
+ if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
+ if (priv->assoc_capability &
+ WLAN_CAPABILITY_SHORT_SLOT_TIME)
+ priv->staging_rxon.flags |=
+ RXON_FLG_SHORT_SLOT_MSK;
+ else
+ priv->staging_rxon.flags &=
+ ~RXON_FLG_SHORT_SLOT_MSK;
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
+ priv->staging_rxon.flags &=
+ ~RXON_FLG_SHORT_SLOT_MSK;
+ }
+ /* restore RXON assoc */
+ priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
+ iwl_commit_rxon(priv);
+#ifdef CONFIG_IWLWIFI_QOS
+ iwl_activate_qos(priv, 1);
+#endif
+ iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
+ iwl_send_beacon_cmd(priv);
+ } else
+ iwl_send_beacon_cmd(priv);
+
+ /* FIXME - we need to add code here to detect a totally new
+ * configuration, reset the AP, unassoc, rxon timing, assoc,
+ * clear sta table, add BCAST sta... */
+}
+
+static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
+ struct ieee80211_if_conf *conf)
+{
+ struct iwl_priv *priv = hw->priv;
+ unsigned long flags;
+ int rc;
+
+ if (conf == NULL)
+ return -EIO;
+
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
+ (!conf->beacon || !conf->ssid_len)) {
+ IWL_DEBUG_MAC80211
+ ("Leaving in AP mode because HostAPD is not ready.\n");
+ return 0;
+ }
+
+ mutex_lock(&priv->mutex);
+
+ IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
+ if (conf->bssid)
+ IWL_DEBUG_MAC80211("bssid: " MAC_FMT "\n",
+ MAC_ARG(conf->bssid));
+
+ if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
+ !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
+ IWL_DEBUG_MAC80211("leave - scanning\n");
+ mutex_unlock(&priv->mutex);
+ return 0;
+ }
+
+ if (priv->interface_id != if_id) {
+ IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
+ mutex_unlock(&priv->mutex);
+ return 0;
+ }
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
+ if (!conf->bssid) {
+ conf->bssid = priv->mac_addr;
+ memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
+ IWL_DEBUG_MAC80211("bssid was set to: " MAC_FMT "\n",
+ MAC_ARG(conf->bssid));
+ }
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+
+ priv->ibss_beacon = conf->beacon;
+ }
+
+ if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
+ !is_multicast_ether_addr(conf->bssid)) {
+ /* If there is currently a HW scan going on in the background
+ * then we need to cancel it else the RXON below will fail. */
+ if (iwl_scan_cancel_timeout(priv, 100)) {
+ IWL_WARNING("Aborted scan still in progress "
+ "after 100ms\n");
+ IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
+ mutex_unlock(&priv->mutex);
+ return -EAGAIN;
+ }
+ memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
+
+ /* TODO: Audit driver for usage of these members and see
+ * if mac80211 deprecates them (priv->bssid looks like it
+ * shouldn't be there, but I haven't scanned the IBSS code
+ * to verify) - jpk */
+ memcpy(priv->bssid, conf->bssid, ETH_ALEN);
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+ iwl_config_ap(priv);
+ else {
+ priv->staging_rxon.filter_flags |=
+ RXON_FILTER_ASSOC_MSK;
+ rc = iwl_commit_rxon(priv);
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
+ iwl_rxon_add_station(
+ priv, priv->active_rxon.bssid_addr, 1);
+ }
+
+ } else {
+ priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+ iwl_commit_rxon(priv);
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!conf->ssid_len)
+ memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
+ else
+ memcpy(priv->essid, conf->ssid, conf->ssid_len);
+
+ priv->essid_len = conf->ssid_len;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ IWL_DEBUG_MAC80211("leave\n");
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ mutex_lock(&priv->mutex);
+ if (priv->interface_id == conf->if_id) {
+ priv->interface_id = 0;
+ memset(priv->bssid, 0, ETH_ALEN);
+ memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
+ priv->essid_len = 0;
+ }
+ mutex_unlock(&priv->mutex);
+
+ IWL_DEBUG_MAC80211("leave\n");
+
+}
+
+#define IWL_DELAY_NEXT_SCAN (HZ*2)
+static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
+{
+ int rc = 0;
+ unsigned long flags;
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (!iwl_is_ready_rf(priv)) {
+ rc = -EIO;
+ IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
+ goto out_unlock;
+ }
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
+ rc = -EIO;
+ IWL_ERROR("ERROR: APs don't scan\n");
+ goto out_unlock;
+ }
+
+ /* if we just finished scan ask for delay */
+ if (priv->last_scan_jiffies &&
+ time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
+ jiffies)) {
+ rc = -EAGAIN;
+ goto out_unlock;
+ }
+ if (len) {
+ IWL_DEBUG_SCAN("direct scan for "
+ "%s [%d]\n ",
+ iwl_escape_essid(ssid, len), (int)len);
+
+ priv->one_direct_scan = 1;
+ priv->direct_ssid_len = (u8)
+ min((u8) len, (u8) IW_ESSID_MAX_SIZE);
+ memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
+ }
+
+ rc = iwl_scan_initiate(priv);
+
+ IWL_DEBUG_MAC80211("leave\n");
+
+out_unlock:
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return rc;
+}
+
+static int iwl_mac_set_key(struct ieee80211_hw *hw, set_key_cmd cmd,
+ const u8 *local_addr, const u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct iwl_priv *priv = hw->priv;
+ int rc = 0;
+ u8 sta_id;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ if (!iwl_param_hwcrypto) {
+ IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (is_zero_ether_addr(addr))
+ /* only support pairwise keys */
+ return -EOPNOTSUPP;
+
+ sta_id = iwl_hw_find_station(priv, addr);
+ if (sta_id == IWL_INVALID_STATION) {
+ IWL_DEBUG_MAC80211("leave - " MAC_FMT " not in station map.\n",
+ MAC_ARG(addr));
+ return -EINVAL;
+ }
+
+ mutex_lock(&priv->mutex);
+
+ switch (cmd) {
+ case SET_KEY:
+ rc = iwl_update_sta_key_info(priv, key, sta_id);
+ if (!rc) {
+ iwl_set_rxon_hwcrypto(priv, 1);
+ iwl_commit_rxon(priv);
+ key->hw_key_idx = sta_id;
+ IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ }
+ break;
+ case DISABLE_KEY:
+ rc = iwl_clear_sta_key_info(priv, sta_id);
+ if (!rc) {
+ iwl_set_rxon_hwcrypto(priv, 0);
+ iwl_commit_rxon(priv);
+ IWL_DEBUG_MAC80211("disable hwcrypto key\n");
+ }
+ break;
+ default:
+ rc = -EINVAL;
+ }
+
+ IWL_DEBUG_MAC80211("leave\n");
+ mutex_unlock(&priv->mutex);
+
+ return rc;
+}
+
+static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct iwl_priv *priv = hw->priv;
+#ifdef CONFIG_IWLWIFI_QOS
+ unsigned long flags;
+ int q;
+#endif /* CONFIG_IWL_QOS */
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ if (!iwl_is_ready_rf(priv)) {
+ IWL_DEBUG_MAC80211("leave - RF not ready\n");
+ return -EIO;
+ }
+
+ if (queue >= AC_NUM) {
+ IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
+ return 0;
+ }
+
+#ifdef CONFIG_IWLWIFI_QOS
+ if (!priv->qos_data.qos_enable) {
+ priv->qos_data.qos_active = 0;
+ IWL_DEBUG_MAC80211("leave - qos not enabled\n");
+ return 0;
+ }
+ q = AC_NUM - 1 - queue;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
+ priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
+ priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
+ priv->qos_data.def_qos_parm.ac[q].edca_txop =
+ cpu_to_le16((params->burst_time * 100));
+
+ priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
+ priv->qos_data.qos_active = 1;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ mutex_lock(&priv->mutex);
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+ iwl_activate_qos(priv, 1);
+ else if (priv->assoc_id && iwl_is_associated(priv))
+ iwl_activate_qos(priv, 0);
+
+ mutex_unlock(&priv->mutex);
+
+#endif /*CONFIG_IWLWIFI_QOS */
+
+ IWL_DEBUG_MAC80211("leave\n");
+ return 0;
+}
+
+static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
+ struct ieee80211_tx_queue_stats *stats)
+{
+ struct iwl_priv *priv = hw->priv;
+ int i, avail;
+ struct iwl_tx_queue *txq;
+ struct iwl_queue *q;
+ unsigned long flags;
+
+ IWL_DEBUG_MAC80211("enter\n");
+
+ if (!iwl_is_ready_rf(priv)) {
+ IWL_DEBUG_MAC80211("leave - RF not ready\n");
+ return -EIO;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ for (i = 0; i < AC_NUM; i++) {
+ txq = &priv->txq[i];
+ q = &txq->q;
+ avail = iwl_queue_space(q);
+
+ stats->data[i].len = q->n_window - avail;
+ stats->data[i].limit = q->n_window - q->high_mark;
+ stats->data[i].count = q->n_window;
+
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ IWL_DEBUG_MAC80211("leave\n");
+
+ return 0;
+}
+
+static int iwl_mac_get_stats(struct ieee80211_hw *hw,
+ struct ieee80211_low_level_stats *stats)
+{
+ IWL_DEBUG_MAC80211("enter\n");
+ IWL_DEBUG_MAC80211("leave\n");
+
+ return 0;
+}
+
+static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
+{
+ IWL_DEBUG_MAC80211("enter\n");
+ IWL_DEBUG_MAC80211("leave\n");
+
+ return 0;
+}
+
+static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
+{
+ struct iwl_priv *priv = hw->priv;
+ unsigned long flags;
+
+ mutex_lock(&priv->mutex);
+ IWL_DEBUG_MAC80211("enter\n");
+
+ priv->lq_mngr.lq_ready = 0;
+#ifdef CONFIG_IWLWIFI_HT
+ spin_lock_irqsave(&priv->lock, flags);
+ memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
+ spin_unlock_irqrestore(&priv->lock, flags);
+#ifdef CONFIG_IWLWIFI_HT_AGG
+/* if (priv->lq_mngr.agg_ctrl.granted_ba)
+ iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
+
+ memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
+ priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
+ priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
+ priv->lq_mngr.agg_ctrl.auto_agg = 1;
+
+ if (priv->lq_mngr.agg_ctrl.auto_agg)
+ priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
+#endif /*CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+#ifdef CONFIG_IWLWIFI_QOS
+ iwl_reset_qos(priv);
+#endif
+
+ cancel_delayed_work(&priv->post_associate);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->assoc_id = 0;
+ priv->assoc_capability = 0;
+ priv->call_post_assoc_from_beacon = 0;
+ priv->assoc_station_added = 0;
+
+ /* new association get rid of ibss beacon skb */
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+
+ priv->ibss_beacon = NULL;
+
+ priv->beacon_int = priv->hw->conf.beacon_int;
+ priv->timestamp1 = 0;
+ priv->timestamp0 = 0;
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
+ priv->beacon_int = 0;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Per mac80211.h: This is only used in IBSS mode... */
+ if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
+ IWL_DEBUG_MAC80211("leave - not in IBSS\n");
+ mutex_unlock(&priv->mutex);
+ return;
+ }
+
+ if (!iwl_is_ready_rf(priv)) {
+ IWL_DEBUG_MAC80211("leave - not ready\n");
+ mutex_unlock(&priv->mutex);
+ return;
+ }
+
+ priv->only_active_channel = 0;
+
+ iwl_set_rate(priv);
+
+ mutex_unlock(&priv->mutex);
+
+ IWL_DEBUG_MAC80211("leave\n");
+
+}
+
+static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ieee80211_tx_control *control)
+{
+ struct iwl_priv *priv = hw->priv;
+ unsigned long flags;
+
+ mutex_lock(&priv->mutex);
+ IWL_DEBUG_MAC80211("enter\n");
+
+ if (!iwl_is_ready_rf(priv)) {
+ IWL_DEBUG_MAC80211("leave - RF not ready\n");
+ mutex_unlock(&priv->mutex);
+ return -EIO;
+ }
+
+ if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
+ IWL_DEBUG_MAC80211("leave - not IBSS\n");
+ mutex_unlock(&priv->mutex);
+ return -EIO;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+
+ priv->ibss_beacon = skb;
+
+ priv->assoc_id = 0;
+
+ IWL_DEBUG_MAC80211("leave\n");
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+#ifdef CONFIG_IWLWIFI_QOS
+ iwl_reset_qos(priv);
+#endif
+
+ queue_work(priv->workqueue, &priv->post_associate.work);
+
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+union ht_cap_info {
+ struct {
+ u16 advanced_coding_cap :1;
+ u16 supported_chan_width_set :1;
+ u16 mimo_power_save_mode :2;
+ u16 green_field :1;
+ u16 short_GI20 :1;
+ u16 short_GI40 :1;
+ u16 tx_stbc :1;
+ u16 rx_stbc :1;
+ u16 beam_forming :1;
+ u16 delayed_ba :1;
+ u16 maximal_amsdu_size :1;
+ u16 cck_mode_at_40MHz :1;
+ u16 psmp_support :1;
+ u16 stbc_ctrl_frame_support :1;
+ u16 sig_txop_protection_support :1;
+ };
+ u16 val;
+} __attribute__ ((packed));
+
+union ht_param_info{
+ struct {
+ u8 max_rx_ampdu_factor :2;
+ u8 mpdu_density :3;
+ u8 reserved :3;
+ };
+ u8 val;
+} __attribute__ ((packed));
+
+union ht_exra_param_info {
+ struct {
+ u8 ext_chan_offset :2;
+ u8 tx_chan_width :1;
+ u8 rifs_mode :1;
+ u8 controlled_access_only :1;
+ u8 service_interval_granularity :3;
+ };
+ u8 val;
+} __attribute__ ((packed));
+
+union ht_operation_mode{
+ struct {
+ u16 op_mode :2;
+ u16 non_GF :1;
+ u16 reserved :13;
+ };
+ u16 val;
+} __attribute__ ((packed));
+
+
+static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
+ struct ieee80211_ht_additional_info *ht_extra,
+ struct sta_ht_info *ht_info_ap,
+ struct sta_ht_info *ht_info)
+{
+ union ht_cap_info cap;
+ union ht_operation_mode op_mode;
+ union ht_param_info param_info;
+ union ht_exra_param_info extra_param_info;
+
+ IWL_DEBUG_MAC80211("enter: \n");
+
+ if (!ht_info) {
+ IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
+ return -1;
+ }
+
+ if (ht_cap) {
+ cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
+ param_info.val = ht_cap->mac_ht_params_info;
+ ht_info->is_ht = 1;
+ if (cap.short_GI20)
+ ht_info->sgf |= 0x1;
+ if (cap.short_GI40)
+ ht_info->sgf |= 0x2;
+ ht_info->is_green_field = cap.green_field;
+ ht_info->max_amsdu_size = cap.maximal_amsdu_size;
+ ht_info->supported_chan_width = cap.supported_chan_width_set;
+ ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
+ memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
+
+ ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
+ ht_info->mpdu_density = param_info.mpdu_density;
+
+ IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
+ ht_cap->supported_mcs_set[0],
+ ht_cap->supported_mcs_set[1]);
+
+ if (ht_info_ap) {
+ ht_info->control_channel = ht_info_ap->control_channel;
+ ht_info->extension_chan_offset =
+ ht_info_ap->extension_chan_offset;
+ ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
+ ht_info->operating_mode = ht_info_ap->operating_mode;
+ }
+
+ if (ht_extra) {
+ extra_param_info.val = ht_extra->ht_param;
+ ht_info->control_channel = ht_extra->control_chan;
+ ht_info->extension_chan_offset =
+ extra_param_info.ext_chan_offset;
+ ht_info->tx_chan_width = extra_param_info.tx_chan_width;
+ op_mode.val = (u16)
+ le16_to_cpu(ht_extra->operation_mode);
+ ht_info->operating_mode = op_mode.op_mode;
+ IWL_DEBUG_MAC80211("control channel %d\n",
+ ht_extra->control_chan);
+ }
+ } else
+ ht_info->is_ht = 0;
+
+ IWL_DEBUG_MAC80211("leave\n");
+ return 0;
+}
+
+static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
+ struct ieee80211_ht_capability *ht_cap,
+ struct ieee80211_ht_additional_info *ht_extra)
+{
+ struct iwl_priv *priv = hw->priv;
+ int rs;
+
+ IWL_DEBUG_MAC80211("enter: \n");
+
+ rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
+ iwl4965_set_rxon_chain(priv);
+
+ if (priv && priv->assoc_id &&
+ (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (priv->beacon_int)
+ queue_work(priv->workqueue, &priv->post_associate.work);
+ else
+ priv->call_post_assoc_from_beacon = 1;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+ IWL_DEBUG_MAC80211("leave: control channel %d\n",
+ ht_extra->control_chan);
+ return rs;
+
+}
+
+static void iwl_set_ht_capab(struct ieee80211_hw *hw,
+ struct ieee80211_ht_capability *ht_cap,
+ u8 use_wide_chan)
+{
+ union ht_cap_info cap;
+ union ht_param_info param_info;
+
+ memset(&cap, 0, sizeof(union ht_cap_info));
+ memset(¶m_info, 0, sizeof(union ht_param_info));
+
+ cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
+ cap.green_field = 1;
+ cap.short_GI20 = 1;
+ cap.short_GI40 = 1;
+ cap.supported_chan_width_set = use_wide_chan;
+ cap.mimo_power_save_mode = 0x3;
+
+ param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
+ param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
+ ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
+ ht_cap->mac_ht_params_info = (u8) param_info.val;
+
+ ht_cap->supported_mcs_set[0] = 0xff;
+ ht_cap->supported_mcs_set[1] = 0xff;
+ ht_cap->supported_mcs_set[4] =
+ (cap.supported_chan_width_set) ? 0x1: 0x0;
+}
+
+static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
+ struct ieee80211_ht_capability *ht_cap)
+{
+ u8 use_wide_channel = 1;
+ struct iwl_priv *priv = hw->priv;
+
+ IWL_DEBUG_MAC80211("enter: \n");
+ if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
+ use_wide_channel = 0;
+
+ /* no fat tx allowed on 2.4GHZ */
+ if (priv->phymode != MODE_IEEE80211A)
+ use_wide_channel = 0;
+
+ iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
+ IWL_DEBUG_MAC80211("leave: \n");
+}
+#endif /*CONFIG_IWLWIFI_HT*/
+
+/*****************************************************************************
+ *
+ * sysfs attributes
+ *
+ *****************************************************************************/
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+
+/*
+ * The following adds a new attribute to the sysfs representation
+ * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
+ * used for controlling the debug level.
+ *
+ * See the level definitions in iwl for details.
+ */
+
+static ssize_t show_debug_level(struct device_driver *d, char *buf)
+{
+ return sprintf(buf, "0x%08X\n", iwl_debug_level);
+}
+static ssize_t store_debug_level(struct device_driver *d,
+ const char *buf, size_t count)
+{
+ char *p = (char *)buf;
+ u32 val;
+
+ val = simple_strtoul(p, &p, 0);
+ if (p == buf)
+ printk(KERN_INFO DRV_NAME
+ ": %s is not in hex or decimal form.\n", buf);
+ else
+ iwl_debug_level = val;
+
+ return strnlen(buf, count);
+}
+
+static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
+ show_debug_level, store_debug_level);
+
+#endif /* CONFIG_IWLWIFI_DEBUG */
+
+static ssize_t show_rf_kill(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ /*
+ * 0 - RF kill not enabled
+ * 1 - SW based RF kill active (sysfs)
+ * 2 - HW based RF kill active
+ * 3 - Both HW and SW based RF kill active
+ */
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
+ (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
+
+ return sprintf(buf, "%i\n", val);
+}
+
+static ssize_t store_rf_kill(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+
+ mutex_lock(&priv->mutex);
+ iwl_radio_kill_sw(priv, buf[0] == '1');
+ mutex_unlock(&priv->mutex);
+
+ return count;
+}
+
+static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
+
+static ssize_t show_temperature(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+
+ if (!iwl_is_alive(priv))
+ return -EAGAIN;
+
+ return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
+}
+
+static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
+
+static ssize_t show_rs_window(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iwl_priv *priv = d->driver_data;
+ return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
+}
+static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
+
+static ssize_t show_tx_power(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ return sprintf(buf, "%d\n", priv->user_txpower_limit);
+}
+
+static ssize_t store_tx_power(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ char *p = (char *)buf;
+ u32 val;
+
+ val = simple_strtoul(p, &p, 10);
+ if (p == buf)
+ printk(KERN_INFO DRV_NAME
+ ": %s is not in decimal form.\n", buf);
+ else
+ iwl_hw_reg_set_txpower(priv, val);
+
+ return count;
+}
+
+static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
+
+static ssize_t show_flags(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+
+ return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
+}
+
+static ssize_t store_flags(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ u32 flags = simple_strtoul(buf, NULL, 0);
+
+ mutex_lock(&priv->mutex);
+ if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
+ /* Cancel any currently running scans... */
+ if (iwl_scan_cancel_timeout(priv, 100))
+ IWL_WARNING("Could not cancel scan.\n");
+ else {
+ IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
+ flags);
+ priv->staging_rxon.flags = cpu_to_le32(flags);
+ iwl_commit_rxon(priv);
+ }
+ }
+ mutex_unlock(&priv->mutex);
+
+ return count;
+}
+
+static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
+
+static ssize_t show_filter_flags(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+
+ return sprintf(buf, "0x%04X\n",
+ le32_to_cpu(priv->active_rxon.filter_flags));
+}
+
+static ssize_t store_filter_flags(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ u32 filter_flags = simple_strtoul(buf, NULL, 0);
+
+ mutex_lock(&priv->mutex);
+ if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
+ /* Cancel any currently running scans... */
+ if (iwl_scan_cancel_timeout(priv, 100))
+ IWL_WARNING("Could not cancel scan.\n");
+ else {
+ IWL_DEBUG_INFO("Committing rxon.filter_flags = "
+ "0x%04X\n", filter_flags);
+ priv->staging_rxon.filter_flags =
+ cpu_to_le32(filter_flags);
+ iwl_commit_rxon(priv);
+ }
+ }
+ mutex_unlock(&priv->mutex);
+
+ return count;
+}
+
+static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
+ store_filter_flags);
+
+static ssize_t show_tune(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+
+ return sprintf(buf, "0x%04X\n",
+ (priv->phymode << 8) |
+ le16_to_cpu(priv->active_rxon.channel));
+}
+
+static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
+
+static ssize_t store_tune(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ char *p = (char *)buf;
+ u16 tune = simple_strtoul(p, &p, 0);
+ u8 phymode = (tune >> 8) & 0xff;
+ u16 channel = tune & 0xff;
+
+ IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
+
+ mutex_lock(&priv->mutex);
+ if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
+ (priv->phymode != phymode)) {
+ const struct iwl_channel_info *ch_info;
+
+ ch_info = iwl_get_channel_info(priv, phymode, channel);
+ if (!ch_info) {
+ IWL_WARNING("Requested invalid phymode/channel "
+ "combination: %d %d\n", phymode, channel);
+ mutex_unlock(&priv->mutex);
+ return -EINVAL;
+ }
+
+ /* Cancel any currently running scans... */
+ if (iwl_scan_cancel_timeout(priv, 100))
+ IWL_WARNING("Could not cancel scan.\n");
+ else {
+ IWL_DEBUG_INFO("Committing phymode and "
+ "rxon.channel = %d %d\n",
+ phymode, channel);
+
+ iwl_set_rxon_channel(priv, phymode, channel);
+ iwl_set_flags_for_phymode(priv, phymode);
+
+ iwl_set_rate(priv);
+ iwl_commit_rxon(priv);
+ }
+ }
+ mutex_unlock(&priv->mutex);
+
+ return count;
+}
+
+static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
+
+#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
+
+static ssize_t show_measurement(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ struct iwl_spectrum_notification measure_report;
+ u32 size = sizeof(measure_report), len = 0, ofs = 0;
+ u8 *data = (u8 *) & measure_report;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!(priv->measurement_status & MEASUREMENT_READY)) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return 0;
+ }
+ memcpy(&measure_report, &priv->measure_report, size);
+ priv->measurement_status = 0;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ while (size && (PAGE_SIZE - len)) {
+ hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
+ PAGE_SIZE - len, 1);
+ len = strlen(buf);
+ if (PAGE_SIZE - len)
+ buf[len++] = '\n';
+
+ ofs += 16;
+ size -= min(size, 16U);
+ }
+
+ return len;
+}
+
+static ssize_t store_measurement(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ struct ieee80211_measurement_params params = {
+ .channel = le16_to_cpu(priv->active_rxon.channel),
+ .start_time = cpu_to_le64(priv->last_tsf),
+ .duration = cpu_to_le16(1),
+ };
+ u8 type = IWL_MEASURE_BASIC;
+ u8 buffer[32];
+ u8 channel;
+
+ if (count) {
+ char *p = buffer;
+ strncpy(buffer, buf, min(sizeof(buffer), count));
+ channel = simple_strtoul(p, NULL, 0);
+ if (channel)
+ params.channel = channel;
+
+ p = buffer;
+ while (*p && *p != ' ')
+ p++;
+ if (*p)
+ type = simple_strtoul(p + 1, NULL, 0);
+ }
+
+ IWL_DEBUG_INFO("Invoking measurement of type %d on "
+ "channel %d (for '%s')\n", type, params.channel, buf);
+ iwl_get_measurement(priv, ¶ms, type);
+
+ return count;
+}
+
+static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
+ show_measurement, store_measurement);
+#endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
+
+static ssize_t store_retry_rate(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+
+ priv->retry_rate = simple_strtoul(buf, NULL, 0);
+ if (priv->retry_rate <= 0)
+ priv->retry_rate = 1;
+
+ return count;
+}
+
+static ssize_t show_retry_rate(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ return sprintf(buf, "%d", priv->retry_rate);
+}
+
+static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
+ store_retry_rate);
+
+static ssize_t store_power_level(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ int rc;
+ int mode;
+
+ mode = simple_strtoul(buf, NULL, 0);
+ mutex_lock(&priv->mutex);
+
+ if (!iwl_is_ready(priv)) {
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
+ mode = IWL_POWER_AC;
+ else
+ mode |= IWL_POWER_ENABLED;
+
+ if (mode != priv->power_mode) {
+ rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
+ if (rc) {
+ IWL_DEBUG_MAC80211("failed setting power mode.\n");
+ goto out;
+ }
+ priv->power_mode = mode;
+ }
+
+ rc = count;
+
+ out:
+ mutex_unlock(&priv->mutex);
+ return rc;
+}
+
+#define MAX_WX_STRING 80
+
+/* Values are in microsecond */
+static const s32 timeout_duration[] = {
+ 350000,
+ 250000,
+ 75000,
+ 37000,
+ 25000,
+};
+static const s32 period_duration[] = {
+ 400000,
+ 700000,
+ 1000000,
+ 1000000,
+ 1000000
+};
+
+static ssize_t show_power_level(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ int level = IWL_POWER_LEVEL(priv->power_mode);
+ char *p = buf;
+
+ p += sprintf(p, "%d ", level);
+ switch (level) {
+ case IWL_POWER_MODE_CAM:
+ case IWL_POWER_AC:
+ p += sprintf(p, "(AC)");
+ break;
+ case IWL_POWER_BATTERY:
+ p += sprintf(p, "(BATTERY)");
+ break;
+ default:
+ p += sprintf(p,
+ "(Timeout %dms, Period %dms)",
+ timeout_duration[level - 1] / 1000,
+ period_duration[level - 1] / 1000);
+ }
+
+ if (!(priv->power_mode & IWL_POWER_ENABLED))
+ p += sprintf(p, " OFF\n");
+ else
+ p += sprintf(p, " \n");
+
+ return (p - buf + 1);
+
+}
+
+static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
+ store_power_level);
+
+static ssize_t show_channels(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ int len = 0, i;
+ struct ieee80211_channel *channels = NULL;
+ const struct ieee80211_hw_mode *hw_mode = NULL;
+ int count = 0;
+
+ if (!iwl_is_ready(priv))
+ return -EAGAIN;
+
+ hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
+ if (!hw_mode)
+ hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
+ if (hw_mode) {
+ channels = hw_mode->channels;
+ count = hw_mode->num_channels;
+ }
+
+ len +=
+ sprintf(&buf[len],
+ "Displaying %d channels in 2.4GHz band "
+ "(802.11bg):\n", count);
+
+ for (i = 0; i < count; i++)
+ len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
+ channels[i].chan,
+ channels[i].power_level,
+ channels[i].
+ flag & IEEE80211_CHAN_W_RADAR_DETECT ?
+ " (IEEE 802.11h required)" : "",
+ (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
+ || (channels[i].
+ flag &
+ IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
+ ", IBSS",
+ channels[i].
+ flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
+ "active/passive" : "passive only");
+
+ hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
+ if (hw_mode) {
+ channels = hw_mode->channels;
+ count = hw_mode->num_channels;
+ } else {
+ channels = NULL;
+ count = 0;
+ }
+
+ len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
+ "(802.11a):\n", count);
+
+ for (i = 0; i < count; i++)
+ len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
+ channels[i].chan,
+ channels[i].power_level,
+ channels[i].
+ flag & IEEE80211_CHAN_W_RADAR_DETECT ?
+ " (IEEE 802.11h required)" : "",
+ (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
+ || (channels[i].
+ flag &
+ IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
+ ", IBSS",
+ channels[i].
+ flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
+ "active/passive" : "passive only");
+
+ return len;
+}
+
+static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
+
+static ssize_t show_statistics(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ u32 size = sizeof(struct iwl_notif_statistics);
+ u32 len = 0, ofs = 0;
+ u8 *data = (u8 *) & priv->statistics;
+ int rc = 0;
+
+ if (!iwl_is_alive(priv))
+ return -EAGAIN;
+
+ mutex_lock(&priv->mutex);
+ rc = iwl_send_statistics_request(priv);
+ mutex_unlock(&priv->mutex);
+
+ if (rc) {
+ len = sprintf(buf,
+ "Error sending statistics request: 0x%08X\n", rc);
+ return len;
+ }
+
+ while (size && (PAGE_SIZE - len)) {
+ hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
+ PAGE_SIZE - len, 1);
+ len = strlen(buf);
+ if (PAGE_SIZE - len)
+ buf[len++] = '\n';
+
+ ofs += 16;
+ size -= min(size, 16U);
+ }
+
+ return len;
+}
+
+static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
+
+static ssize_t show_antenna(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+
+ if (!iwl_is_alive(priv))
+ return -EAGAIN;
+
+ return sprintf(buf, "%d\n", priv->antenna);
+}
+
+static ssize_t store_antenna(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ant;
+ struct iwl_priv *priv = dev_get_drvdata(d);
+
+ if (count == 0)
+ return 0;
+
+ if (sscanf(buf, "%1i", &ant) != 1) {
+ IWL_DEBUG_INFO("not in hex or decimal form.\n");
+ return count;
+ }
+
+ if ((ant >= 0) && (ant <= 2)) {
+ IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
+ priv->antenna = (enum iwl_antenna)ant;
+ } else
+ IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
+
+
+ return count;
+}
+
+static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
+
+static ssize_t show_status(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
+ if (!iwl_is_alive(priv))
+ return -EAGAIN;
+ return sprintf(buf, "0x%08x\n", (int)priv->status);
+}
+
+static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
+
+static ssize_t dump_error_log(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ char *p = (char *)buf;
+
+ if (p[0] == '1')
+ iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
+
+ return strnlen(buf, count);
+}
+
+static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
+
+static ssize_t dump_event_log(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ char *p = (char *)buf;
+
+ if (p[0] == '1')
+ iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
+
+ return strnlen(buf, count);
+}
+
+static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
+
+/*****************************************************************************
+ *
+ * driver setup and teardown
+ *
+ *****************************************************************************/
+
+static void iwl_setup_deferred_work(struct iwl_priv *priv)
+{
+ priv->workqueue = create_workqueue(DRV_NAME);
+
+ init_waitqueue_head(&priv->wait_command_queue);
+
+ INIT_WORK(&priv->up, iwl_bg_up);
+ INIT_WORK(&priv->restart, iwl_bg_restart);
+ INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
+ INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
+ INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
+ INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
+ INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
+ INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
+ INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
+ INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
+ INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
+ INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
+
+ iwl_hw_setup_deferred_work(priv);
+
+ tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
+ iwl_irq_tasklet, (unsigned long)priv);
+}
+
+static void iwl_cancel_deferred_work(struct iwl_priv *priv)
+{
+ iwl_hw_cancel_deferred_work(priv);
+
+ cancel_delayed_work(&priv->scan_check);
+ cancel_delayed_work(&priv->alive_start);
+ cancel_delayed_work(&priv->post_associate);
+ cancel_work_sync(&priv->beacon_update);
+}
+
+static struct attribute *iwl_sysfs_entries[] = {
+ &dev_attr_antenna.attr,
+ &dev_attr_channels.attr,
+ &dev_attr_dump_errors.attr,
+ &dev_attr_dump_events.attr,
+ &dev_attr_flags.attr,
+ &dev_attr_filter_flags.attr,
+#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
+ &dev_attr_measurement.attr,
+#endif
+ &dev_attr_power_level.attr,
+ &dev_attr_retry_rate.attr,
+ &dev_attr_rf_kill.attr,
+ &dev_attr_rs_window.attr,
+ &dev_attr_statistics.attr,
+ &dev_attr_status.attr,
+ &dev_attr_temperature.attr,
+ &dev_attr_tune.attr,
+ &dev_attr_tx_power.attr,
+
+ NULL
+};
+
+static struct attribute_group iwl_attribute_group = {
+ .name = NULL, /* put in device directory */
+ .attrs = iwl_sysfs_entries,
+};
+
+static struct ieee80211_ops iwl_hw_ops = {
+ .tx = iwl_mac_tx,
+ .open = iwl_mac_open,
+ .stop = iwl_mac_stop,
+ .add_interface = iwl_mac_add_interface,
+ .remove_interface = iwl_mac_remove_interface,
+ .config = iwl_mac_config,
+ .config_interface = iwl_mac_config_interface,
+ .set_key = iwl_mac_set_key,
+ .get_stats = iwl_mac_get_stats,
+ .get_tx_stats = iwl_mac_get_tx_stats,
+ .conf_tx = iwl_mac_conf_tx,
+ .get_tsf = iwl_mac_get_tsf,
+ .reset_tsf = iwl_mac_reset_tsf,
+ .beacon_update = iwl_mac_beacon_update,
+#ifdef CONFIG_IWLWIFI_HT
+ .conf_ht = iwl_mac_conf_ht,
+ .get_ht_capab = iwl_mac_get_ht_capab,
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
+ .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
+ .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
+ .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+ .hw_scan = iwl_mac_hw_scan
+};
+
+static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ int err = 0;
+ struct iwl_priv *priv;
+ struct ieee80211_hw *hw;
+ int i;
+
+ if (iwl_param_disable_hw_scan) {
+ IWL_DEBUG_INFO("Disabling hw_scan\n");
+ iwl_hw_ops.hw_scan = NULL;
+ }
+
+ if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
+ (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
+ IWL_ERROR("invalid queues_num, should be between %d and %d\n",
+ IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* mac80211 allocates memory for this device instance, including
+ * space for this driver's private structure */
+ hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
+ if (hw == NULL) {
+ IWL_ERROR("Can not allocate network device\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ SET_IEEE80211_DEV(hw, &pdev->dev);
+
+ IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
+ priv = hw->priv;
+ priv->hw = hw;
+
+ priv->pci_dev = pdev;
+ priv->antenna = (enum iwl_antenna)iwl_param_antenna;
+#ifdef CONFIG_IWLWIFI_DEBUG
+ iwl_debug_level = iwl_param_debug;
+ atomic_set(&priv->restrict_refcnt, 0);
+#endif
+ priv->retry_rate = 1;
+
+ priv->ibss_beacon = NULL;
+
+ /* Tell mac80211 and its clients (e.g. Wireless Extensions)
+ * the range of signal quality values that we'll provide.
+ * Negative values for level/noise indicate that we'll provide dBm.
+ * For WE, at least, non-0 values here *enable* display of values
+ * in app (iwconfig). */
+ hw->max_rssi = -20; /* signal level, negative indicates dBm */
+ hw->max_noise = -20; /* noise level, negative indicates dBm */
+ hw->max_signal = 100; /* link quality indication (%) */
+
+ /* Tell mac80211 our Tx characteristics */
+ hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
+
+ hw->queues = 4;
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ hw->queues = 16;
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+ spin_lock_init(&priv->lock);
+ spin_lock_init(&priv->power_data.lock);
+ spin_lock_init(&priv->sta_lock);
+ spin_lock_init(&priv->hcmd_lock);
+ spin_lock_init(&priv->lq_mngr.lock);
+
+ for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
+ INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
+
+ INIT_LIST_HEAD(&priv->free_frames);
+
+ mutex_init(&priv->mutex);
+ if (pci_enable_device(pdev)) {
+ err = -ENODEV;
+ goto out_ieee80211_free_hw;
+ }
+
+ pci_set_master(pdev);
+
+ iwl_clear_stations_table(priv);
+
+ priv->data_retry_limit = -1;
+ priv->ieee_channels = NULL;
+ priv->ieee_rates = NULL;
+ priv->phymode = -1;
+
+ err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ if (!err)
+ err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+ if (err) {
+ printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
+ goto out_pci_disable_device;
+ }
+
+ pci_set_drvdata(pdev, priv);
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err)
+ goto out_pci_disable_device;
+ /* 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);
+ priv->hw_base = pci_iomap(pdev, 0, 0);
+ if (!priv->hw_base) {
+ err = -ENODEV;
+ goto out_pci_release_regions;
+ }
+
+ IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
+ (unsigned long long) pci_resource_len(pdev, 0));
+ IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
+
+ /* Initialize module parameter values here */
+
+ if (iwl_param_disable) {
+ set_bit(STATUS_RF_KILL_SW, &priv->status);
+ IWL_DEBUG_INFO("Radio disabled.\n");
+ }
+
+ priv->iw_mode = IEEE80211_IF_TYPE_STA;
+
+ priv->ps_mode = 0;
+ priv->use_ant_b_for_management_frame = 1; /* start with ant B */
+ priv->is_ht_enabled = 1;
+ priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
+ priv->valid_antenna = 0x7; /* assume all 3 connected */
+ priv->ps_mode = IWL_MIMO_PS_NONE;
+ priv->cck_power_index_compensation = iwl_read32(
+ priv, CSR_HW_REV_WA_REG);
+
+ iwl4965_set_rxon_chain(priv);
+
+ printk(KERN_INFO DRV_NAME
+ ": Detected Intel Wireless WiFi Link 4965AGN\n");
+
+ /* Device-specific setup */
+ if (iwl_hw_set_hw_setting(priv)) {
+ IWL_ERROR("failed to set hw settings\n");
+ mutex_unlock(&priv->mutex);
+ goto out_iounmap;
+ }
+
+#ifdef CONFIG_IWLWIFI_QOS
+ if (iwl_param_qos_enable)
+ priv->qos_data.qos_enable = 1;
+
+ iwl_reset_qos(priv);
+
+ priv->qos_data.qos_active = 0;
+ priv->qos_data.qos_cap.val = 0;
+#endif /* CONFIG_IWLWIFI_QOS */
+
+ iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
+ iwl_setup_deferred_work(priv);
+ iwl_setup_rx_handlers(priv);
+
+ priv->rates_mask = IWL_RATES_MASK;
+ /* If power management is turned on, default to AC mode */
+ priv->power_mode = IWL_POWER_AC;
+ priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
+
+ pci_enable_msi(pdev);
+
+ err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
+ if (err) {
+ IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
+ goto out_disable_msi;
+ }
+
+ mutex_lock(&priv->mutex);
+
+ err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
+ if (err) {
+ IWL_ERROR("failed to create sysfs device attributes\n");
+ mutex_unlock(&priv->mutex);
+ goto out_release_irq;
+ }
+
+ /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
+ * ucode filename and max sizes are card-specific. */
+ err = iwl_read_ucode(priv);
+ if (err) {
+ IWL_ERROR("Could not read microcode: %d\n", err);
+ mutex_unlock(&priv->mutex);
+ goto out_pci_alloc;
+ }
+
+ mutex_unlock(&priv->mutex);
+
+ IWL_DEBUG_INFO("Queing UP work.\n");
+
+ queue_work(priv->workqueue, &priv->up);
+
+ return 0;
+
+ out_pci_alloc:
+ iwl_dealloc_ucode_pci(priv);
+
+ sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
+
+ out_release_irq:
+ free_irq(pdev->irq, priv);
+
+ out_disable_msi:
+ pci_disable_msi(pdev);
+ destroy_workqueue(priv->workqueue);
+ priv->workqueue = NULL;
+ iwl_unset_hw_setting(priv);
+
+ out_iounmap:
+ pci_iounmap(pdev, priv->hw_base);
+ out_pci_release_regions:
+ pci_release_regions(pdev);
+ out_pci_disable_device:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ out_ieee80211_free_hw:
+ ieee80211_free_hw(priv->hw);
+ out:
+ return err;
+}
+
+static void iwl_pci_remove(struct pci_dev *pdev)
+{
+ struct iwl_priv *priv = pci_get_drvdata(pdev);
+ struct list_head *p, *q;
+ int i;
+
+ if (!priv)
+ return;
+
+ IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
+
+ mutex_lock(&priv->mutex);
+ set_bit(STATUS_EXIT_PENDING, &priv->status);
+ __iwl_down(priv);
+ mutex_unlock(&priv->mutex);
+
+ /* Free MAC hash list for ADHOC */
+ for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
+ list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
+ list_del(p);
+ kfree(list_entry(p, struct iwl_ibss_seq, list));
+ }
+ }
+
+ sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
+
+ iwl_dealloc_ucode_pci(priv);
+
+ if (priv->rxq.bd)
+ iwl_rx_queue_free(priv, &priv->rxq);
+ iwl_hw_txq_ctx_free(priv);
+
+ iwl_unset_hw_setting(priv);
+ iwl_clear_stations_table(priv);
+
+ if (priv->mac80211_registered) {
+ ieee80211_unregister_hw(priv->hw);
+ iwl_rate_control_unregister(priv->hw);
+ }
+
+ /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
+ * priv->workqueue... so we can't take down the workqueue
+ * until now... */
+ destroy_workqueue(priv->workqueue);
+ priv->workqueue = NULL;
+
+ free_irq(pdev->irq, priv);
+ pci_disable_msi(pdev);
+ pci_iounmap(pdev, priv->hw_base);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ kfree(priv->channel_info);
+
+ kfree(priv->ieee_channels);
+ kfree(priv->ieee_rates);
+
+ if (priv->ibss_beacon)
+ dev_kfree_skb(priv->ibss_beacon);
+
+ ieee80211_free_hw(priv->hw);
+}
+
+#ifdef CONFIG_PM
+
+static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct iwl_priv *priv = pci_get_drvdata(pdev);
+
+ mutex_lock(&priv->mutex);
+
+ set_bit(STATUS_IN_SUSPEND, &priv->status);
+
+ /* Take down the device; powers it off, etc. */
+ __iwl_down(priv);
+
+ if (priv->mac80211_registered)
+ ieee80211_stop_queues(priv->hw);
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+static void iwl_resume(struct iwl_priv *priv)
+{
+ unsigned long flags;
+
+ /* The following it a temporary work around due to the
+ * suspend / resume not fully initializing the NIC correctly.
+ * Without all of the following, resume will not attempt to take
+ * down the NIC (it shouldn't really need to) and will just try
+ * and bring the NIC back up. However that fails during the
+ * ucode verification process. This then causes iwl_down to be
+ * called *after* iwl_hw_nic_init() has succeeded -- which
+ * then lets the next init sequence succeed. So, we've
+ * replicated all of that NIC init code here... */
+
+ iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
+
+ iwl_hw_nic_init(priv);
+
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+ iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
+
+ /* tell the device to stop sending interrupts */
+ iwl_disable_interrupts(priv);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
+
+ if (!iwl_grab_restricted_access(priv)) {
+ iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT);
+ iwl_release_restricted_access(priv);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ udelay(5);
+
+ iwl_hw_nic_reset(priv);
+
+ /* Bring the device back up */
+ clear_bit(STATUS_IN_SUSPEND, &priv->status);
+ queue_work(priv->workqueue, &priv->up);
+}
+
+static int iwl_pci_resume(struct pci_dev *pdev)
+{
+ struct iwl_priv *priv = pci_get_drvdata(pdev);
+ int err;
+
+ printk(KERN_INFO "Coming out of suspend...\n");
+
+ mutex_lock(&priv->mutex);
+
+ pci_set_power_state(pdev, PCI_D0);
+ err = pci_enable_device(pdev);
+ pci_restore_state(pdev);
+
+ /*
+ * Suspend/Resume resets the PCI configuration space, so we have to
+ * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
+ * from interfering with C3 CPU state. pci_restore_state won't help
+ * here since it only restores the first 64 bytes pci config header.
+ */
+ pci_write_config_byte(pdev, 0x41, 0x00);
+
+ iwl_resume(priv);
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+/*****************************************************************************
+ *
+ * driver and module entry point
+ *
+ *****************************************************************************/
+
+static struct pci_driver iwl_driver = {
+ .name = DRV_NAME,
+ .id_table = iwl_hw_card_ids,
+ .probe = iwl_pci_probe,
+ .remove = __devexit_p(iwl_pci_remove),
+#ifdef CONFIG_PM
+ .suspend = iwl_pci_suspend,
+ .resume = iwl_pci_resume,
+#endif
+};
+
+static int __init iwl_init(void)
+{
+
+ int ret;
+ printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
+ printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
+ ret = pci_register_driver(&iwl_driver);
+ if (ret) {
+ IWL_ERROR("Unable to initialize PCI module\n");
+ return ret;
+ }
+#ifdef CONFIG_IWLWIFI_DEBUG
+ ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
+ if (ret) {
+ IWL_ERROR("Unable to create driver sysfs file\n");
+ pci_unregister_driver(&iwl_driver);
+ return ret;
+ }
+#endif
+
+ return ret;
+}
+
+static void __exit iwl_exit(void)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+ driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
+#endif
+ pci_unregister_driver(&iwl_driver);
+}
+
+module_param_named(antenna, iwl_param_antenna, int, 0444);
+MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
+module_param_named(disable, iwl_param_disable, int, 0444);
+MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
+module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
+MODULE_PARM_DESC(hwcrypto,
+ "using hardware crypto engine (default 0 [software])\n");
+module_param_named(debug, iwl_param_debug, int, 0444);
+MODULE_PARM_DESC(debug, "debug output mask");
+module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
+MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
+
+module_param_named(queues_num, iwl_param_queues_num, int, 0444);
+MODULE_PARM_DESC(queues_num, "number of hw queues.");
+
+/* QoS */
+module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
+MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
+
+module_exit(iwl_exit);
+module_init(iwl_init);