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/******************************************************************************
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* Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*****************************************************************************/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/pci-aspm.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/wireless.h>
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <linux/if_arp.h>
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#include <net/ieee80211_radiotap.h>
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#include <net/mac80211.h>
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#include <asm/div64.h>
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#define DRV_NAME "iwl3945"
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#include "iwl-3945-fh.h"
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#include "iwl-commands.h"
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#include "iwl-helpers.h"
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#include "iwl-spectrum.h"
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* module name, copyright, version, etc.
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#define DRV_DESCRIPTION \
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"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
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#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
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* add "s" to indicate spectrum measurement included.
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* we add it here to be consistent with previous releases in which
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* this was configurable.
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#define DRV_VERSION IWLWIFI_VERSION VD "s"
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#define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
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#define DRV_AUTHOR "<ilw@linux.intel.com>"
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_VERSION(DRV_VERSION);
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MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
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MODULE_LICENSE("GPL");
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/* module parameters */
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struct iwl_mod_params iwl3945_mod_params = {
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/* the rest are 0 by default */
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* iwl3945_get_antenna_flags - Get antenna flags for RXON command
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* @priv: eeprom and antenna fields are used to determine antenna flags
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* priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
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* iwl3945_mod_params.antenna specifies the antenna diversity mode:
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* IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
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* IWL_ANTENNA_MAIN - Force MAIN antenna
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* IWL_ANTENNA_AUX - Force AUX antenna
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__le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
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struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
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switch (iwl3945_mod_params.antenna) {
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case IWL_ANTENNA_DIVERSITY:
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case IWL_ANTENNA_MAIN:
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if (eeprom->antenna_switch_type)
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
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case IWL_ANTENNA_AUX:
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if (eeprom->antenna_switch_type)
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
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return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
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/* bad antenna selector value */
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IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
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iwl3945_mod_params.antenna);
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return 0; /* "diversity" is default if error */
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static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf,
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__le16 key_flags = 0;
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key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
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key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
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if (sta_id == priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id)
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key_flags |= STA_KEY_MULTICAST_MSK;
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keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
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keyconf->hw_key_idx = keyconf->keyidx;
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key_flags &= ~STA_KEY_FLG_INVALID;
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spin_lock_irqsave(&priv->sta_lock, flags);
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priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
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priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
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memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
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memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
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if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
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== STA_KEY_FLG_NO_ENC)
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priv->stations[sta_id].sta.key.key_offset =
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iwl_legacy_get_free_ucode_key_index(priv);
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/* else, we are overriding an existing key => no need to allocated room
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WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
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"no space for a new key");
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priv->stations[sta_id].sta.key.key_flags = key_flags;
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priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
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priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
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IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
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ret = iwl_legacy_send_add_sta(priv,
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&priv->stations[sta_id].sta, CMD_ASYNC);
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf,
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static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf,
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static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
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struct iwl_legacy_addsta_cmd sta_cmd;
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spin_lock_irqsave(&priv->sta_lock, flags);
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memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
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memset(&priv->stations[sta_id].sta.key, 0,
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sizeof(struct iwl4965_keyinfo));
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priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
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priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
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priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
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memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_legacy_addsta_cmd));
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
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return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
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static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *keyconf, u8 sta_id)
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keyconf->hw_key_idx = HW_KEY_DYNAMIC;
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switch (keyconf->cipher) {
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case WLAN_CIPHER_SUITE_CCMP:
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ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
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case WLAN_CIPHER_SUITE_TKIP:
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ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
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case WLAN_CIPHER_SUITE_WEP40:
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case WLAN_CIPHER_SUITE_WEP104:
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ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
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IWL_ERR(priv, "Unknown alg: %s alg=%x\n", __func__,
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IWL_DEBUG_WEP(priv, "Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
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keyconf->cipher, keyconf->keylen, keyconf->keyidx,
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static int iwl3945_remove_static_key(struct iwl_priv *priv)
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int ret = -EOPNOTSUPP;
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static int iwl3945_set_static_key(struct iwl_priv *priv,
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struct ieee80211_key_conf *key)
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if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
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key->cipher == WLAN_CIPHER_SUITE_WEP104)
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IWL_ERR(priv, "Static key invalid: cipher %x\n", key->cipher);
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static void iwl3945_clear_free_frames(struct iwl_priv *priv)
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struct list_head *element;
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IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
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while (!list_empty(&priv->free_frames)) {
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element = priv->free_frames.next;
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kfree(list_entry(element, struct iwl3945_frame, list));
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priv->frames_count--;
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if (priv->frames_count) {
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IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
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priv->frames_count = 0;
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static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
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struct iwl3945_frame *frame;
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struct list_head *element;
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if (list_empty(&priv->free_frames)) {
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frame = kzalloc(sizeof(*frame), GFP_KERNEL);
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IWL_ERR(priv, "Could not allocate frame!\n");
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priv->frames_count++;
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element = priv->free_frames.next;
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return list_entry(element, struct iwl3945_frame, list);
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static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
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memset(frame, 0, sizeof(*frame));
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list_add(&frame->list, &priv->free_frames);
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unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
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struct ieee80211_hdr *hdr,
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if (!iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS) || !priv->beacon_skb)
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if (priv->beacon_skb->len > left)
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memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
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return priv->beacon_skb->len;
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static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
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struct iwl3945_frame *frame;
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unsigned int frame_size;
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frame = iwl3945_get_free_frame(priv);
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IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
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rate = iwl_legacy_get_lowest_plcp(priv,
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&priv->contexts[IWL_RXON_CTX_BSS]);
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frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
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rc = iwl_legacy_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
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iwl3945_free_frame(priv, frame);
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static void iwl3945_unset_hw_params(struct iwl_priv *priv)
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if (priv->_3945.shared_virt)
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dma_free_coherent(&priv->pci_dev->dev,
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sizeof(struct iwl3945_shared),
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priv->_3945.shared_virt,
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priv->_3945.shared_phys);
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static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
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struct ieee80211_tx_info *info,
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struct iwl_device_cmd *cmd,
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struct sk_buff *skb_frag,
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struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
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struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
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switch (keyinfo->cipher) {
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case WLAN_CIPHER_SUITE_CCMP:
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tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
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memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
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IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
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case WLAN_CIPHER_SUITE_TKIP:
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case WLAN_CIPHER_SUITE_WEP104:
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tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
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case WLAN_CIPHER_SUITE_WEP40:
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tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
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(info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
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memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
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IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
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"with key %d\n", info->control.hw_key->hw_key_idx);
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IWL_ERR(priv, "Unknown encode cipher %x\n", keyinfo->cipher);
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* handle build REPLY_TX command notification.
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static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
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struct iwl_device_cmd *cmd,
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struct ieee80211_tx_info *info,
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struct ieee80211_hdr *hdr, u8 std_id)
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struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
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__le32 tx_flags = tx_cmd->tx_flags;
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__le16 fc = hdr->frame_control;
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tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
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if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
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tx_flags |= TX_CMD_FLG_ACK_MSK;
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if (ieee80211_is_mgmt(fc))
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tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
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if (ieee80211_is_probe_resp(fc) &&
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!(le16_to_cpu(hdr->seq_ctrl) & 0xf))
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tx_flags |= TX_CMD_FLG_TSF_MSK;
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tx_flags &= (~TX_CMD_FLG_ACK_MSK);
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tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
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tx_cmd->sta_id = std_id;
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if (ieee80211_has_morefrags(fc))
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tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
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if (ieee80211_is_data_qos(fc)) {
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u8 *qc = ieee80211_get_qos_ctl(hdr);
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tx_cmd->tid_tspec = qc[0] & 0xf;
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tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
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tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
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iwl_legacy_tx_cmd_protection(priv, info, fc, &tx_flags);
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tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
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if (ieee80211_is_mgmt(fc)) {
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if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
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tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
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tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
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tx_cmd->timeout.pm_frame_timeout = 0;
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tx_cmd->driver_txop = 0;
460
tx_cmd->tx_flags = tx_flags;
461
tx_cmd->next_frame_len = 0;
465
* start REPLY_TX command process
467
static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct iwl3945_tx_cmd *tx_cmd;
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struct iwl_tx_queue *txq = NULL;
473
struct iwl_queue *q = NULL;
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struct iwl_device_cmd *out_cmd;
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struct iwl_cmd_meta *out_meta;
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dma_addr_t phys_addr;
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dma_addr_t txcmd_phys;
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int txq_id = skb_get_queue_mapping(skb);
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u16 len, idx, hdr_len;
485
u8 wait_write_ptr = 0;
488
spin_lock_irqsave(&priv->lock, flags);
489
if (iwl_legacy_is_rfkill(priv)) {
490
IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
494
if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
495
IWL_ERR(priv, "ERROR: No TX rate available.\n");
499
unicast = !is_multicast_ether_addr(hdr->addr1);
502
fc = hdr->frame_control;
504
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
505
if (ieee80211_is_auth(fc))
506
IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
507
else if (ieee80211_is_assoc_req(fc))
508
IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
509
else if (ieee80211_is_reassoc_req(fc))
510
IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
513
spin_unlock_irqrestore(&priv->lock, flags);
515
hdr_len = ieee80211_hdrlen(fc);
517
/* Find index into station table for destination station */
518
sta_id = iwl_legacy_sta_id_or_broadcast(
519
priv, &priv->contexts[IWL_RXON_CTX_BSS],
521
if (sta_id == IWL_INVALID_STATION) {
522
IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
527
IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
529
if (ieee80211_is_data_qos(fc)) {
530
u8 *qc = ieee80211_get_qos_ctl(hdr);
531
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
532
if (unlikely(tid >= MAX_TID_COUNT))
536
/* Descriptor for chosen Tx queue */
537
txq = &priv->txq[txq_id];
540
if ((iwl_legacy_queue_space(q) < q->high_mark))
543
spin_lock_irqsave(&priv->lock, flags);
545
idx = iwl_legacy_get_cmd_index(q, q->write_ptr, 0);
547
/* Set up driver data for this TFD */
548
memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
549
txq->txb[q->write_ptr].skb = skb;
550
txq->txb[q->write_ptr].ctx = &priv->contexts[IWL_RXON_CTX_BSS];
552
/* Init first empty entry in queue's array of Tx/cmd buffers */
553
out_cmd = txq->cmd[idx];
554
out_meta = &txq->meta[idx];
555
tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
556
memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
557
memset(tx_cmd, 0, sizeof(*tx_cmd));
560
* Set up the Tx-command (not MAC!) header.
561
* Store the chosen Tx queue and TFD index within the sequence field;
562
* after Tx, uCode's Tx response will return this value so driver can
563
* locate the frame within the tx queue and do post-tx processing.
565
out_cmd->hdr.cmd = REPLY_TX;
566
out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
567
INDEX_TO_SEQ(q->write_ptr)));
569
/* Copy MAC header from skb into command buffer */
570
memcpy(tx_cmd->hdr, hdr, hdr_len);
573
if (info->control.hw_key)
574
iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
576
/* TODO need this for burst mode later on */
577
iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
579
/* set is_hcca to 0; it probably will never be implemented */
580
iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
582
/* Total # bytes to be transmitted */
584
tx_cmd->len = cpu_to_le16(len);
586
iwl_legacy_dbg_log_tx_data_frame(priv, len, hdr);
587
iwl_legacy_update_stats(priv, true, fc, len);
588
tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
589
tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
591
if (!ieee80211_has_morefrags(hdr->frame_control)) {
592
txq->need_update = 1;
595
txq->need_update = 0;
598
IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
599
le16_to_cpu(out_cmd->hdr.sequence));
600
IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
601
iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
602
iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
603
ieee80211_hdrlen(fc));
606
* Use the first empty entry in this queue's command buffer array
607
* to contain the Tx command and MAC header concatenated together
608
* (payload data will be in another buffer).
609
* Size of this varies, due to varying MAC header length.
610
* If end is not dword aligned, we'll have 2 extra bytes at the end
611
* of the MAC header (device reads on dword boundaries).
612
* We'll tell device about this padding later.
614
len = sizeof(struct iwl3945_tx_cmd) +
615
sizeof(struct iwl_cmd_header) + hdr_len;
616
len = (len + 3) & ~3;
618
/* Physical address of this Tx command's header (not MAC header!),
619
* within command buffer array. */
620
txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
621
len, PCI_DMA_TODEVICE);
622
/* we do not map meta data ... so we can safely access address to
623
* provide to unmap command*/
624
dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
625
dma_unmap_len_set(out_meta, len, len);
627
/* Add buffer containing Tx command and MAC(!) header to TFD's
629
priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
630
txcmd_phys, len, 1, 0);
633
/* Set up TFD's 2nd entry to point directly to remainder of skb,
634
* if any (802.11 null frames have no payload). */
635
len = skb->len - hdr_len;
637
phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
638
len, PCI_DMA_TODEVICE);
639
priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
645
/* Tell device the write index *just past* this latest filled TFD */
646
q->write_ptr = iwl_legacy_queue_inc_wrap(q->write_ptr, q->n_bd);
647
iwl_legacy_txq_update_write_ptr(priv, txq);
648
spin_unlock_irqrestore(&priv->lock, flags);
650
if ((iwl_legacy_queue_space(q) < q->high_mark)
651
&& priv->mac80211_registered) {
652
if (wait_write_ptr) {
653
spin_lock_irqsave(&priv->lock, flags);
654
txq->need_update = 1;
655
iwl_legacy_txq_update_write_ptr(priv, txq);
656
spin_unlock_irqrestore(&priv->lock, flags);
659
iwl_legacy_stop_queue(priv, txq);
665
spin_unlock_irqrestore(&priv->lock, flags);
670
static int iwl3945_get_measurement(struct iwl_priv *priv,
671
struct ieee80211_measurement_params *params,
674
struct iwl_spectrum_cmd spectrum;
675
struct iwl_rx_packet *pkt;
676
struct iwl_host_cmd cmd = {
677
.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
678
.data = (void *)&spectrum,
679
.flags = CMD_WANT_SKB,
681
u32 add_time = le64_to_cpu(params->start_time);
683
int spectrum_resp_status;
684
int duration = le16_to_cpu(params->duration);
685
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
687
if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))
688
add_time = iwl_legacy_usecs_to_beacons(priv,
689
le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
690
le16_to_cpu(ctx->timing.beacon_interval));
692
memset(&spectrum, 0, sizeof(spectrum));
694
spectrum.channel_count = cpu_to_le16(1);
696
RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
697
spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
698
cmd.len = sizeof(spectrum);
699
spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
701
if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))
702
spectrum.start_time =
703
iwl_legacy_add_beacon_time(priv,
704
priv->_3945.last_beacon_time, add_time,
705
le16_to_cpu(ctx->timing.beacon_interval));
707
spectrum.start_time = 0;
709
spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
710
spectrum.channels[0].channel = params->channel;
711
spectrum.channels[0].type = type;
712
if (ctx->active.flags & RXON_FLG_BAND_24G_MSK)
713
spectrum.flags |= RXON_FLG_BAND_24G_MSK |
714
RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
716
rc = iwl_legacy_send_cmd_sync(priv, &cmd);
720
pkt = (struct iwl_rx_packet *)cmd.reply_page;
721
if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
722
IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
726
spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
727
switch (spectrum_resp_status) {
728
case 0: /* Command will be handled */
729
if (pkt->u.spectrum.id != 0xff) {
730
IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
732
priv->measurement_status &= ~MEASUREMENT_READY;
734
priv->measurement_status |= MEASUREMENT_ACTIVE;
738
case 1: /* Command will not be handled */
743
iwl_legacy_free_pages(priv, cmd.reply_page);
748
static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
749
struct iwl_rx_mem_buffer *rxb)
751
struct iwl_rx_packet *pkt = rxb_addr(rxb);
752
struct iwl_alive_resp *palive;
753
struct delayed_work *pwork;
755
palive = &pkt->u.alive_frame;
757
IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
759
palive->is_valid, palive->ver_type,
760
palive->ver_subtype);
762
if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
763
IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
764
memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
765
sizeof(struct iwl_alive_resp));
766
pwork = &priv->init_alive_start;
768
IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
769
memcpy(&priv->card_alive, &pkt->u.alive_frame,
770
sizeof(struct iwl_alive_resp));
771
pwork = &priv->alive_start;
772
iwl3945_disable_events(priv);
775
/* We delay the ALIVE response by 5ms to
776
* give the HW RF Kill time to activate... */
777
if (palive->is_valid == UCODE_VALID_OK)
778
queue_delayed_work(priv->workqueue, pwork,
779
msecs_to_jiffies(5));
781
IWL_WARN(priv, "uCode did not respond OK.\n");
784
static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
785
struct iwl_rx_mem_buffer *rxb)
787
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
788
struct iwl_rx_packet *pkt = rxb_addr(rxb);
791
IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
794
static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
795
struct iwl_rx_mem_buffer *rxb)
797
struct iwl_rx_packet *pkt = rxb_addr(rxb);
798
struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
799
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
800
u8 rate = beacon->beacon_notify_hdr.rate;
802
IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
803
"tsf %d %d rate %d\n",
804
le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
805
beacon->beacon_notify_hdr.failure_frame,
806
le32_to_cpu(beacon->ibss_mgr_status),
807
le32_to_cpu(beacon->high_tsf),
808
le32_to_cpu(beacon->low_tsf), rate);
811
priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
815
/* Handle notification from uCode that card's power state is changing
816
* due to software, hardware, or critical temperature RFKILL */
817
static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
818
struct iwl_rx_mem_buffer *rxb)
820
struct iwl_rx_packet *pkt = rxb_addr(rxb);
821
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
822
unsigned long status = priv->status;
824
IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
825
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
826
(flags & SW_CARD_DISABLED) ? "Kill" : "On");
828
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
829
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
831
if (flags & HW_CARD_DISABLED)
832
set_bit(STATUS_RF_KILL_HW, &priv->status);
834
clear_bit(STATUS_RF_KILL_HW, &priv->status);
837
iwl_legacy_scan_cancel(priv);
839
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
840
test_bit(STATUS_RF_KILL_HW, &priv->status)))
841
wiphy_rfkill_set_hw_state(priv->hw->wiphy,
842
test_bit(STATUS_RF_KILL_HW, &priv->status));
844
wake_up_interruptible(&priv->wait_command_queue);
848
* iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
850
* Setup the RX handlers for each of the reply types sent from the uCode
853
* This function chains into the hardware specific files for them to setup
854
* any hardware specific handlers as well.
856
static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
858
priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
859
priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
860
priv->rx_handlers[REPLY_ERROR] = iwl_legacy_rx_reply_error;
861
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_legacy_rx_csa;
862
priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
863
iwl_legacy_rx_spectrum_measure_notif;
864
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_legacy_rx_pm_sleep_notif;
865
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
866
iwl_legacy_rx_pm_debug_statistics_notif;
867
priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
870
* The same handler is used for both the REPLY to a discrete
871
* statistics request from the host as well as for the periodic
872
* statistics notifications (after received beacons) from the uCode.
874
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
875
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
877
iwl_legacy_setup_rx_scan_handlers(priv);
878
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
880
/* Set up hardware specific Rx handlers */
881
iwl3945_hw_rx_handler_setup(priv);
884
/************************** RX-FUNCTIONS ****************************/
886
* Rx theory of operation
888
* The host allocates 32 DMA target addresses and passes the host address
889
* to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
893
* The host/firmware share two index registers for managing the Rx buffers.
895
* The READ index maps to the first position that the firmware may be writing
896
* to -- the driver can read up to (but not including) this position and get
898
* The READ index is managed by the firmware once the card is enabled.
900
* The WRITE index maps to the last position the driver has read from -- the
901
* position preceding WRITE is the last slot the firmware can place a packet.
903
* The queue is empty (no good data) if WRITE = READ - 1, and is full if
906
* During initialization, the host sets up the READ queue position to the first
907
* INDEX position, and WRITE to the last (READ - 1 wrapped)
909
* When the firmware places a packet in a buffer, it will advance the READ index
910
* and fire the RX interrupt. The driver can then query the READ index and
911
* process as many packets as possible, moving the WRITE index forward as it
912
* resets the Rx queue buffers with new memory.
914
* The management in the driver is as follows:
915
* + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
916
* iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
917
* to replenish the iwl->rxq->rx_free.
918
* + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
919
* iwl->rxq is replenished and the READ INDEX is updated (updating the
920
* 'processed' and 'read' driver indexes as well)
921
* + A received packet is processed and handed to the kernel network stack,
922
* detached from the iwl->rxq. The driver 'processed' index is updated.
923
* + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
924
* list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
925
* INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
926
* were enough free buffers and RX_STALLED is set it is cleared.
931
* iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
932
* iwl3945_rx_queue_restock
933
* iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
934
* queue, updates firmware pointers, and updates
935
* the WRITE index. If insufficient rx_free buffers
936
* are available, schedules iwl3945_rx_replenish
938
* -- enable interrupts --
939
* ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
940
* READ INDEX, detaching the SKB from the pool.
941
* Moves the packet buffer from queue to rx_used.
942
* Calls iwl3945_rx_queue_restock to refill any empty
949
* iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
951
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
954
return cpu_to_le32((u32)dma_addr);
958
* iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
960
* If there are slots in the RX queue that need to be restocked,
961
* and we have free pre-allocated buffers, fill the ranks as much
962
* as we can, pulling from rx_free.
964
* This moves the 'write' index forward to catch up with 'processed', and
965
* also updates the memory address in the firmware to reference the new
968
static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
970
struct iwl_rx_queue *rxq = &priv->rxq;
971
struct list_head *element;
972
struct iwl_rx_mem_buffer *rxb;
976
spin_lock_irqsave(&rxq->lock, flags);
977
write = rxq->write & ~0x7;
978
while ((iwl_legacy_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
979
/* Get next free Rx buffer, remove from free list */
980
element = rxq->rx_free.next;
981
rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
984
/* Point to Rx buffer via next RBD in circular buffer */
985
rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
986
rxq->queue[rxq->write] = rxb;
987
rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
990
spin_unlock_irqrestore(&rxq->lock, flags);
991
/* If the pre-allocated buffer pool is dropping low, schedule to
993
if (rxq->free_count <= RX_LOW_WATERMARK)
994
queue_work(priv->workqueue, &priv->rx_replenish);
997
/* If we've added more space for the firmware to place data, tell it.
998
* Increment device's write pointer in multiples of 8. */
999
if ((rxq->write_actual != (rxq->write & ~0x7))
1000
|| (abs(rxq->write - rxq->read) > 7)) {
1001
spin_lock_irqsave(&rxq->lock, flags);
1002
rxq->need_update = 1;
1003
spin_unlock_irqrestore(&rxq->lock, flags);
1004
iwl_legacy_rx_queue_update_write_ptr(priv, rxq);
1009
* iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1011
* When moving to rx_free an SKB is allocated for the slot.
1013
* Also restock the Rx queue via iwl3945_rx_queue_restock.
1014
* This is called as a scheduled work item (except for during initialization)
1016
static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1018
struct iwl_rx_queue *rxq = &priv->rxq;
1019
struct list_head *element;
1020
struct iwl_rx_mem_buffer *rxb;
1022
unsigned long flags;
1023
gfp_t gfp_mask = priority;
1026
spin_lock_irqsave(&rxq->lock, flags);
1028
if (list_empty(&rxq->rx_used)) {
1029
spin_unlock_irqrestore(&rxq->lock, flags);
1032
spin_unlock_irqrestore(&rxq->lock, flags);
1034
if (rxq->free_count > RX_LOW_WATERMARK)
1035
gfp_mask |= __GFP_NOWARN;
1037
if (priv->hw_params.rx_page_order > 0)
1038
gfp_mask |= __GFP_COMP;
1040
/* Alloc a new receive buffer */
1041
page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1043
if (net_ratelimit())
1044
IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1045
if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1047
IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1048
priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1050
/* We don't reschedule replenish work here -- we will
1051
* call the restock method and if it still needs
1052
* more buffers it will schedule replenish */
1056
spin_lock_irqsave(&rxq->lock, flags);
1057
if (list_empty(&rxq->rx_used)) {
1058
spin_unlock_irqrestore(&rxq->lock, flags);
1059
__free_pages(page, priv->hw_params.rx_page_order);
1062
element = rxq->rx_used.next;
1063
rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1065
spin_unlock_irqrestore(&rxq->lock, flags);
1068
/* Get physical address of RB/SKB */
1069
rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1070
PAGE_SIZE << priv->hw_params.rx_page_order,
1071
PCI_DMA_FROMDEVICE);
1073
spin_lock_irqsave(&rxq->lock, flags);
1075
list_add_tail(&rxb->list, &rxq->rx_free);
1077
priv->alloc_rxb_page++;
1079
spin_unlock_irqrestore(&rxq->lock, flags);
1083
void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1085
unsigned long flags;
1087
spin_lock_irqsave(&rxq->lock, flags);
1088
INIT_LIST_HEAD(&rxq->rx_free);
1089
INIT_LIST_HEAD(&rxq->rx_used);
1090
/* Fill the rx_used queue with _all_ of the Rx buffers */
1091
for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1092
/* In the reset function, these buffers may have been allocated
1093
* to an SKB, so we need to unmap and free potential storage */
1094
if (rxq->pool[i].page != NULL) {
1095
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1096
PAGE_SIZE << priv->hw_params.rx_page_order,
1097
PCI_DMA_FROMDEVICE);
1098
__iwl_legacy_free_pages(priv, rxq->pool[i].page);
1099
rxq->pool[i].page = NULL;
1101
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1104
/* Set us so that we have processed and used all buffers, but have
1105
* not restocked the Rx queue with fresh buffers */
1106
rxq->read = rxq->write = 0;
1107
rxq->write_actual = 0;
1108
rxq->free_count = 0;
1109
spin_unlock_irqrestore(&rxq->lock, flags);
1112
void iwl3945_rx_replenish(void *data)
1114
struct iwl_priv *priv = data;
1115
unsigned long flags;
1117
iwl3945_rx_allocate(priv, GFP_KERNEL);
1119
spin_lock_irqsave(&priv->lock, flags);
1120
iwl3945_rx_queue_restock(priv);
1121
spin_unlock_irqrestore(&priv->lock, flags);
1124
static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1126
iwl3945_rx_allocate(priv, GFP_ATOMIC);
1128
iwl3945_rx_queue_restock(priv);
1132
/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1133
* If an SKB has been detached, the POOL needs to have its SKB set to NULL
1134
* This free routine walks the list of POOL entries and if SKB is set to
1135
* non NULL it is unmapped and freed
1137
static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1140
for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1141
if (rxq->pool[i].page != NULL) {
1142
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1143
PAGE_SIZE << priv->hw_params.rx_page_order,
1144
PCI_DMA_FROMDEVICE);
1145
__iwl_legacy_free_pages(priv, rxq->pool[i].page);
1146
rxq->pool[i].page = NULL;
1150
dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1152
dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1153
rxq->rb_stts, rxq->rb_stts_dma);
1155
rxq->rb_stts = NULL;
1159
/* Convert linear signal-to-noise ratio into dB */
1160
static u8 ratio2dB[100] = {
1161
/* 0 1 2 3 4 5 6 7 8 9 */
1162
0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1163
20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1164
26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1165
29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1166
32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1167
34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1168
36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1169
37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1170
38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1171
39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1174
/* Calculates a relative dB value from a ratio of linear
1175
* (i.e. not dB) signal levels.
1176
* Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1177
int iwl3945_calc_db_from_ratio(int sig_ratio)
1179
/* 1000:1 or higher just report as 60 dB */
1180
if (sig_ratio >= 1000)
1183
/* 100:1 or higher, divide by 10 and use table,
1184
* add 20 dB to make up for divide by 10 */
1185
if (sig_ratio >= 100)
1186
return 20 + (int)ratio2dB[sig_ratio/10];
1188
/* We shouldn't see this */
1192
/* Use table for ratios 1:1 - 99:1 */
1193
return (int)ratio2dB[sig_ratio];
1197
* iwl3945_rx_handle - Main entry function for receiving responses from uCode
1199
* Uses the priv->rx_handlers callback function array to invoke
1200
* the appropriate handlers, including command responses,
1201
* frame-received notifications, and other notifications.
1203
static void iwl3945_rx_handle(struct iwl_priv *priv)
1205
struct iwl_rx_mem_buffer *rxb;
1206
struct iwl_rx_packet *pkt;
1207
struct iwl_rx_queue *rxq = &priv->rxq;
1210
unsigned long flags;
1213
int total_empty = 0;
1215
/* uCode's read index (stored in shared DRAM) indicates the last Rx
1216
* buffer that the driver may process (last buffer filled by ucode). */
1217
r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1220
/* calculate total frames need to be restock after handling RX */
1221
total_empty = r - rxq->write_actual;
1222
if (total_empty < 0)
1223
total_empty += RX_QUEUE_SIZE;
1225
if (total_empty > (RX_QUEUE_SIZE / 2))
1227
/* Rx interrupt, but nothing sent from uCode */
1229
IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1234
rxb = rxq->queue[i];
1236
/* If an RXB doesn't have a Rx queue slot associated with it,
1237
* then a bug has been introduced in the queue refilling
1238
* routines -- catch it here */
1239
BUG_ON(rxb == NULL);
1241
rxq->queue[i] = NULL;
1243
pci_unmap_page(priv->pci_dev, rxb->page_dma,
1244
PAGE_SIZE << priv->hw_params.rx_page_order,
1245
PCI_DMA_FROMDEVICE);
1246
pkt = rxb_addr(rxb);
1248
len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1249
len += sizeof(u32); /* account for status word */
1250
trace_iwlwifi_legacy_dev_rx(priv, pkt, len);
1252
/* Reclaim a command buffer only if this packet is a response
1253
* to a (driver-originated) command.
1254
* If the packet (e.g. Rx frame) originated from uCode,
1255
* there is no command buffer to reclaim.
1256
* Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1257
* but apparently a few don't get set; catch them here. */
1258
reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1259
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1260
(pkt->hdr.cmd != REPLY_TX);
1262
/* Based on type of command response or notification,
1263
* handle those that need handling via function in
1264
* rx_handlers table. See iwl3945_setup_rx_handlers() */
1265
if (priv->rx_handlers[pkt->hdr.cmd]) {
1266
IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1267
iwl_legacy_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1268
priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1269
priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1271
/* No handling needed */
1273
"r %d i %d No handler needed for %s, 0x%02x\n",
1274
r, i, iwl_legacy_get_cmd_string(pkt->hdr.cmd),
1279
* XXX: After here, we should always check rxb->page
1280
* against NULL before touching it or its virtual
1281
* memory (pkt). Because some rx_handler might have
1282
* already taken or freed the pages.
1286
/* Invoke any callbacks, transfer the buffer to caller,
1287
* and fire off the (possibly) blocking iwl_legacy_send_cmd()
1288
* as we reclaim the driver command queue */
1290
iwl_legacy_tx_cmd_complete(priv, rxb);
1292
IWL_WARN(priv, "Claim null rxb?\n");
1295
/* Reuse the page if possible. For notification packets and
1296
* SKBs that fail to Rx correctly, add them back into the
1297
* rx_free list for reuse later. */
1298
spin_lock_irqsave(&rxq->lock, flags);
1299
if (rxb->page != NULL) {
1300
rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1301
0, PAGE_SIZE << priv->hw_params.rx_page_order,
1302
PCI_DMA_FROMDEVICE);
1303
list_add_tail(&rxb->list, &rxq->rx_free);
1306
list_add_tail(&rxb->list, &rxq->rx_used);
1308
spin_unlock_irqrestore(&rxq->lock, flags);
1310
i = (i + 1) & RX_QUEUE_MASK;
1311
/* If there are a lot of unused frames,
1312
* restock the Rx queue so ucode won't assert. */
1317
iwl3945_rx_replenish_now(priv);
1323
/* Backtrack one entry */
1326
iwl3945_rx_replenish_now(priv);
1328
iwl3945_rx_queue_restock(priv);
1331
/* call this function to flush any scheduled tasklet */
1332
static inline void iwl3945_synchronize_irq(struct iwl_priv *priv)
1334
/* wait to make sure we flush pending tasklet*/
1335
synchronize_irq(priv->pci_dev->irq);
1336
tasklet_kill(&priv->irq_tasklet);
1339
static const char *iwl3945_desc_lookup(int i)
1347
return "BAD_CHECKSUM";
1349
return "NMI_INTERRUPT";
1353
return "FATAL_ERROR";
1359
#define ERROR_START_OFFSET (1 * sizeof(u32))
1360
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
1362
void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1365
u32 desc, time, count, base, data1;
1366
u32 blink1, blink2, ilink1, ilink2;
1368
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1370
if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1371
IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1376
count = iwl_legacy_read_targ_mem(priv, base);
1378
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1379
IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1380
IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1381
priv->status, count);
1384
IWL_ERR(priv, "Desc Time asrtPC blink2 "
1385
"ilink1 nmiPC Line\n");
1386
for (i = ERROR_START_OFFSET;
1387
i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1388
i += ERROR_ELEM_SIZE) {
1389
desc = iwl_legacy_read_targ_mem(priv, base + i);
1391
iwl_legacy_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1393
iwl_legacy_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1395
iwl_legacy_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1397
iwl_legacy_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1399
iwl_legacy_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1401
iwl_legacy_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1404
"%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1405
iwl3945_desc_lookup(desc), desc, time, blink1, blink2,
1406
ilink1, ilink2, data1);
1407
trace_iwlwifi_legacy_dev_ucode_error(priv, desc, time, data1, 0,
1408
0, blink1, blink2, ilink1, ilink2);
1412
#define EVENT_START_OFFSET (6 * sizeof(u32))
1415
* iwl3945_print_event_log - Dump error event log to syslog
1418
static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1419
u32 num_events, u32 mode,
1420
int pos, char **buf, size_t bufsz)
1423
u32 base; /* SRAM byte address of event log header */
1424
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1425
u32 ptr; /* SRAM byte address of log data */
1426
u32 ev, time, data; /* event log data */
1427
unsigned long reg_flags;
1429
if (num_events == 0)
1432
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1435
event_size = 2 * sizeof(u32);
1437
event_size = 3 * sizeof(u32);
1439
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1441
/* Make sure device is powered up for SRAM reads */
1442
spin_lock_irqsave(&priv->reg_lock, reg_flags);
1443
iwl_grab_nic_access(priv);
1445
/* Set starting address; reads will auto-increment */
1446
_iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1449
/* "time" is actually "data" for mode 0 (no timestamp).
1450
* place event id # at far right for easier visual parsing. */
1451
for (i = 0; i < num_events; i++) {
1452
ev = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1453
time = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1457
pos += scnprintf(*buf + pos, bufsz - pos,
1461
IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1462
trace_iwlwifi_legacy_dev_ucode_event(priv, 0,
1466
data = _iwl_legacy_read_direct32(priv,
1467
HBUS_TARG_MEM_RDAT);
1469
pos += scnprintf(*buf + pos, bufsz - pos,
1470
"%010u:0x%08x:%04u\n",
1473
IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1475
trace_iwlwifi_legacy_dev_ucode_event(priv, time,
1481
/* Allow device to power down */
1482
iwl_release_nic_access(priv);
1483
spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1488
* iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1490
static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1491
u32 num_wraps, u32 next_entry,
1493
int pos, char **buf, size_t bufsz)
1496
* display the newest DEFAULT_LOG_ENTRIES entries
1497
* i.e the entries just before the next ont that uCode would fill.
1500
if (next_entry < size) {
1501
pos = iwl3945_print_event_log(priv,
1502
capacity - (size - next_entry),
1503
size - next_entry, mode,
1505
pos = iwl3945_print_event_log(priv, 0,
1509
pos = iwl3945_print_event_log(priv, next_entry - size,
1513
if (next_entry < size)
1514
pos = iwl3945_print_event_log(priv, 0,
1518
pos = iwl3945_print_event_log(priv, next_entry - size,
1525
#define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1527
int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1528
char **buf, bool display)
1530
u32 base; /* SRAM byte address of event log header */
1531
u32 capacity; /* event log capacity in # entries */
1532
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1533
u32 num_wraps; /* # times uCode wrapped to top of log */
1534
u32 next_entry; /* index of next entry to be written by uCode */
1535
u32 size; /* # entries that we'll print */
1539
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1540
if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1541
IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1545
/* event log header */
1546
capacity = iwl_legacy_read_targ_mem(priv, base);
1547
mode = iwl_legacy_read_targ_mem(priv, base + (1 * sizeof(u32)));
1548
num_wraps = iwl_legacy_read_targ_mem(priv, base + (2 * sizeof(u32)));
1549
next_entry = iwl_legacy_read_targ_mem(priv, base + (3 * sizeof(u32)));
1551
if (capacity > priv->cfg->base_params->max_event_log_size) {
1552
IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1553
capacity, priv->cfg->base_params->max_event_log_size);
1554
capacity = priv->cfg->base_params->max_event_log_size;
1557
if (next_entry > priv->cfg->base_params->max_event_log_size) {
1558
IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1559
next_entry, priv->cfg->base_params->max_event_log_size);
1560
next_entry = priv->cfg->base_params->max_event_log_size;
1563
size = num_wraps ? capacity : next_entry;
1565
/* bail out if nothing in log */
1567
IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1571
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1572
if (!(iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1573
size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1574
? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1576
size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1577
? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1580
IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1583
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1586
bufsz = capacity * 48;
1589
*buf = kmalloc(bufsz, GFP_KERNEL);
1593
if ((iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1594
/* if uCode has wrapped back to top of log,
1595
* start at the oldest entry,
1596
* i.e the next one that uCode would fill.
1599
pos = iwl3945_print_event_log(priv, next_entry,
1600
capacity - next_entry, mode,
1603
/* (then/else) start at top of log */
1604
pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1607
pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1608
next_entry, size, mode,
1611
pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1612
next_entry, size, mode,
1618
static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1620
u32 inta, handled = 0;
1622
unsigned long flags;
1623
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1627
spin_lock_irqsave(&priv->lock, flags);
1629
/* Ack/clear/reset pending uCode interrupts.
1630
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1631
* and will clear only when CSR_FH_INT_STATUS gets cleared. */
1632
inta = iwl_read32(priv, CSR_INT);
1633
iwl_write32(priv, CSR_INT, inta);
1635
/* Ack/clear/reset pending flow-handler (DMA) interrupts.
1636
* Any new interrupts that happen after this, either while we're
1637
* in this tasklet, or later, will show up in next ISR/tasklet. */
1638
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1639
iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1641
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1642
if (iwl_legacy_get_debug_level(priv) & IWL_DL_ISR) {
1643
/* just for debug */
1644
inta_mask = iwl_read32(priv, CSR_INT_MASK);
1645
IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1646
inta, inta_mask, inta_fh);
1650
spin_unlock_irqrestore(&priv->lock, flags);
1652
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1653
* atomic, make sure that inta covers all the interrupts that
1654
* we've discovered, even if FH interrupt came in just after
1655
* reading CSR_INT. */
1656
if (inta_fh & CSR39_FH_INT_RX_MASK)
1657
inta |= CSR_INT_BIT_FH_RX;
1658
if (inta_fh & CSR39_FH_INT_TX_MASK)
1659
inta |= CSR_INT_BIT_FH_TX;
1661
/* Now service all interrupt bits discovered above. */
1662
if (inta & CSR_INT_BIT_HW_ERR) {
1663
IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1665
/* Tell the device to stop sending interrupts */
1666
iwl_legacy_disable_interrupts(priv);
1668
priv->isr_stats.hw++;
1669
iwl_legacy_irq_handle_error(priv);
1671
handled |= CSR_INT_BIT_HW_ERR;
1676
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1677
if (iwl_legacy_get_debug_level(priv) & (IWL_DL_ISR)) {
1678
/* NIC fires this, but we don't use it, redundant with WAKEUP */
1679
if (inta & CSR_INT_BIT_SCD) {
1680
IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1681
"the frame/frames.\n");
1682
priv->isr_stats.sch++;
1685
/* Alive notification via Rx interrupt will do the real work */
1686
if (inta & CSR_INT_BIT_ALIVE) {
1687
IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1688
priv->isr_stats.alive++;
1692
/* Safely ignore these bits for debug checks below */
1693
inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1695
/* Error detected by uCode */
1696
if (inta & CSR_INT_BIT_SW_ERR) {
1697
IWL_ERR(priv, "Microcode SW error detected. "
1698
"Restarting 0x%X.\n", inta);
1699
priv->isr_stats.sw++;
1700
iwl_legacy_irq_handle_error(priv);
1701
handled |= CSR_INT_BIT_SW_ERR;
1704
/* uCode wakes up after power-down sleep */
1705
if (inta & CSR_INT_BIT_WAKEUP) {
1706
IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1707
iwl_legacy_rx_queue_update_write_ptr(priv, &priv->rxq);
1708
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[0]);
1709
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[1]);
1710
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[2]);
1711
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[3]);
1712
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[4]);
1713
iwl_legacy_txq_update_write_ptr(priv, &priv->txq[5]);
1715
priv->isr_stats.wakeup++;
1716
handled |= CSR_INT_BIT_WAKEUP;
1719
/* All uCode command responses, including Tx command responses,
1720
* Rx "responses" (frame-received notification), and other
1721
* notifications from uCode come through here*/
1722
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1723
iwl3945_rx_handle(priv);
1724
priv->isr_stats.rx++;
1725
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1728
if (inta & CSR_INT_BIT_FH_TX) {
1729
IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1730
priv->isr_stats.tx++;
1732
iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1733
iwl_legacy_write_direct32(priv, FH39_TCSR_CREDIT
1734
(FH39_SRVC_CHNL), 0x0);
1735
handled |= CSR_INT_BIT_FH_TX;
1738
if (inta & ~handled) {
1739
IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1740
priv->isr_stats.unhandled++;
1743
if (inta & ~priv->inta_mask) {
1744
IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1745
inta & ~priv->inta_mask);
1746
IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1749
/* Re-enable all interrupts */
1750
/* only Re-enable if disabled by irq */
1751
if (test_bit(STATUS_INT_ENABLED, &priv->status))
1752
iwl_legacy_enable_interrupts(priv);
1754
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1755
if (iwl_legacy_get_debug_level(priv) & (IWL_DL_ISR)) {
1756
inta = iwl_read32(priv, CSR_INT);
1757
inta_mask = iwl_read32(priv, CSR_INT_MASK);
1758
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1759
IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1760
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1765
static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv,
1766
struct ieee80211_vif *vif,
1767
enum ieee80211_band band,
1768
struct iwl3945_scan_channel *scan_ch)
1770
const struct ieee80211_supported_band *sband;
1771
u16 passive_dwell = 0;
1772
u16 active_dwell = 0;
1776
sband = iwl_get_hw_mode(priv, band);
1778
IWL_ERR(priv, "invalid band\n");
1782
active_dwell = iwl_legacy_get_active_dwell_time(priv, band, 0);
1783
passive_dwell = iwl_legacy_get_passive_dwell_time(priv, band, vif);
1785
if (passive_dwell <= active_dwell)
1786
passive_dwell = active_dwell + 1;
1789
channel = iwl_legacy_get_single_channel_number(priv, band);
1792
scan_ch->channel = channel;
1793
scan_ch->type = 0; /* passive */
1794
scan_ch->active_dwell = cpu_to_le16(active_dwell);
1795
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1796
/* Set txpower levels to defaults */
1797
scan_ch->tpc.dsp_atten = 110;
1798
if (band == IEEE80211_BAND_5GHZ)
1799
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1801
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1804
IWL_ERR(priv, "no valid channel found\n");
1808
static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1809
enum ieee80211_band band,
1810
u8 is_active, u8 n_probes,
1811
struct iwl3945_scan_channel *scan_ch,
1812
struct ieee80211_vif *vif)
1814
struct ieee80211_channel *chan;
1815
const struct ieee80211_supported_band *sband;
1816
const struct iwl_channel_info *ch_info;
1817
u16 passive_dwell = 0;
1818
u16 active_dwell = 0;
1821
sband = iwl_get_hw_mode(priv, band);
1825
active_dwell = iwl_legacy_get_active_dwell_time(priv, band, n_probes);
1826
passive_dwell = iwl_legacy_get_passive_dwell_time(priv, band, vif);
1828
if (passive_dwell <= active_dwell)
1829
passive_dwell = active_dwell + 1;
1831
for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1832
chan = priv->scan_request->channels[i];
1834
if (chan->band != band)
1837
scan_ch->channel = chan->hw_value;
1839
ch_info = iwl_legacy_get_channel_info(priv, band,
1841
if (!iwl_legacy_is_channel_valid(ch_info)) {
1842
IWL_DEBUG_SCAN(priv,
1843
"Channel %d is INVALID for this band.\n",
1848
scan_ch->active_dwell = cpu_to_le16(active_dwell);
1849
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1850
/* If passive , set up for auto-switch
1851
* and use long active_dwell time.
1853
if (!is_active || iwl_legacy_is_channel_passive(ch_info) ||
1854
(chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1855
scan_ch->type = 0; /* passive */
1856
if (IWL_UCODE_API(priv->ucode_ver) == 1)
1857
scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1859
scan_ch->type = 1; /* active */
1862
/* Set direct probe bits. These may be used both for active
1863
* scan channels (probes gets sent right away),
1864
* or for passive channels (probes get se sent only after
1865
* hearing clear Rx packet).*/
1866
if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1868
scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1870
/* uCode v1 does not allow setting direct probe bits on
1871
* passive channel. */
1872
if ((scan_ch->type & 1) && n_probes)
1873
scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1876
/* Set txpower levels to defaults */
1877
scan_ch->tpc.dsp_atten = 110;
1878
/* scan_pwr_info->tpc.dsp_atten; */
1880
/*scan_pwr_info->tpc.tx_gain; */
1881
if (band == IEEE80211_BAND_5GHZ)
1882
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1884
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1885
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
1887
* scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1891
IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1893
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1894
(scan_ch->type & 1) ?
1895
active_dwell : passive_dwell);
1901
IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1905
static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1906
struct ieee80211_rate *rates)
1910
for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1911
rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1912
rates[i].hw_value = i; /* Rate scaling will work on indexes */
1913
rates[i].hw_value_short = i;
1915
if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1917
* If CCK != 1M then set short preamble rate flag.
1919
rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1920
0 : IEEE80211_RATE_SHORT_PREAMBLE;
1925
/******************************************************************************
1927
* uCode download functions
1929
******************************************************************************/
1931
static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1933
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1934
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1935
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1936
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1937
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1938
iwl_legacy_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1942
* iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1943
* looking at all data.
1945
static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1952
IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1954
iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1955
IWL39_RTC_INST_LOWER_BOUND);
1958
for (; len > 0; len -= sizeof(u32), image++) {
1959
/* read data comes through single port, auto-incr addr */
1960
/* NOTE: Use the debugless read so we don't flood kernel log
1961
* if IWL_DL_IO is set */
1962
val = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1963
if (val != le32_to_cpu(*image)) {
1964
IWL_ERR(priv, "uCode INST section is invalid at "
1965
"offset 0x%x, is 0x%x, s/b 0x%x\n",
1966
save_len - len, val, le32_to_cpu(*image));
1976
IWL_DEBUG_INFO(priv,
1977
"ucode image in INSTRUCTION memory is good\n");
1984
* iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1985
* using sample data 100 bytes apart. If these sample points are good,
1986
* it's a pretty good bet that everything between them is good, too.
1988
static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1995
IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1997
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1998
/* read data comes through single port, auto-incr addr */
1999
/* NOTE: Use the debugless read so we don't flood kernel log
2000
* if IWL_DL_IO is set */
2001
iwl_legacy_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2002
i + IWL39_RTC_INST_LOWER_BOUND);
2003
val = _iwl_legacy_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2004
if (val != le32_to_cpu(*image)) {
2005
#if 0 /* Enable this if you want to see details */
2006
IWL_ERR(priv, "uCode INST section is invalid at "
2007
"offset 0x%x, is 0x%x, s/b 0x%x\n",
2022
* iwl3945_verify_ucode - determine which instruction image is in SRAM,
2023
* and verify its contents
2025
static int iwl3945_verify_ucode(struct iwl_priv *priv)
2032
image = (__le32 *)priv->ucode_boot.v_addr;
2033
len = priv->ucode_boot.len;
2034
rc = iwl3945_verify_inst_sparse(priv, image, len);
2036
IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2040
/* Try initialize */
2041
image = (__le32 *)priv->ucode_init.v_addr;
2042
len = priv->ucode_init.len;
2043
rc = iwl3945_verify_inst_sparse(priv, image, len);
2045
IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2049
/* Try runtime/protocol */
2050
image = (__le32 *)priv->ucode_code.v_addr;
2051
len = priv->ucode_code.len;
2052
rc = iwl3945_verify_inst_sparse(priv, image, len);
2054
IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2058
IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2060
/* Since nothing seems to match, show first several data entries in
2061
* instruction SRAM, so maybe visual inspection will give a clue.
2062
* Selection of bootstrap image (vs. other images) is arbitrary. */
2063
image = (__le32 *)priv->ucode_boot.v_addr;
2064
len = priv->ucode_boot.len;
2065
rc = iwl3945_verify_inst_full(priv, image, len);
2070
static void iwl3945_nic_start(struct iwl_priv *priv)
2072
/* Remove all resets to allow NIC to operate */
2073
iwl_write32(priv, CSR_RESET, 0);
2076
#define IWL3945_UCODE_GET(item) \
2077
static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2079
return le32_to_cpu(ucode->v1.item); \
2082
static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2087
static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2089
return (u8 *) ucode->v1.data;
2092
IWL3945_UCODE_GET(inst_size);
2093
IWL3945_UCODE_GET(data_size);
2094
IWL3945_UCODE_GET(init_size);
2095
IWL3945_UCODE_GET(init_data_size);
2096
IWL3945_UCODE_GET(boot_size);
2099
* iwl3945_read_ucode - Read uCode images from disk file.
2101
* Copy into buffers for card to fetch via bus-mastering
2103
static int iwl3945_read_ucode(struct iwl_priv *priv)
2105
const struct iwl_ucode_header *ucode;
2106
int ret = -EINVAL, index;
2107
const struct firmware *ucode_raw;
2108
/* firmware file name contains uCode/driver compatibility version */
2109
const char *name_pre = priv->cfg->fw_name_pre;
2110
const unsigned int api_max = priv->cfg->ucode_api_max;
2111
const unsigned int api_min = priv->cfg->ucode_api_min;
2115
u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2117
/* Ask kernel firmware_class module to get the boot firmware off disk.
2118
* request_firmware() is synchronous, file is in memory on return. */
2119
for (index = api_max; index >= api_min; index--) {
2120
sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2121
ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2123
IWL_ERR(priv, "%s firmware file req failed: %d\n",
2130
if (index < api_max)
2131
IWL_ERR(priv, "Loaded firmware %s, "
2132
"which is deprecated. "
2133
" Please use API v%u instead.\n",
2135
IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2136
"(%zd bytes) from disk\n",
2137
buf, ucode_raw->size);
2145
/* Make sure that we got at least our header! */
2146
if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2147
IWL_ERR(priv, "File size way too small!\n");
2152
/* Data from ucode file: header followed by uCode images */
2153
ucode = (struct iwl_ucode_header *)ucode_raw->data;
2155
priv->ucode_ver = le32_to_cpu(ucode->ver);
2156
api_ver = IWL_UCODE_API(priv->ucode_ver);
2157
inst_size = iwl3945_ucode_get_inst_size(ucode);
2158
data_size = iwl3945_ucode_get_data_size(ucode);
2159
init_size = iwl3945_ucode_get_init_size(ucode);
2160
init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2161
boot_size = iwl3945_ucode_get_boot_size(ucode);
2162
src = iwl3945_ucode_get_data(ucode);
2164
/* api_ver should match the api version forming part of the
2165
* firmware filename ... but we don't check for that and only rely
2166
* on the API version read from firmware header from here on forward */
2168
if (api_ver < api_min || api_ver > api_max) {
2169
IWL_ERR(priv, "Driver unable to support your firmware API. "
2170
"Driver supports v%u, firmware is v%u.\n",
2172
priv->ucode_ver = 0;
2176
if (api_ver != api_max)
2177
IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2178
"got %u. New firmware can be obtained "
2179
"from http://www.intellinuxwireless.org.\n",
2182
IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2183
IWL_UCODE_MAJOR(priv->ucode_ver),
2184
IWL_UCODE_MINOR(priv->ucode_ver),
2185
IWL_UCODE_API(priv->ucode_ver),
2186
IWL_UCODE_SERIAL(priv->ucode_ver));
2188
snprintf(priv->hw->wiphy->fw_version,
2189
sizeof(priv->hw->wiphy->fw_version),
2191
IWL_UCODE_MAJOR(priv->ucode_ver),
2192
IWL_UCODE_MINOR(priv->ucode_ver),
2193
IWL_UCODE_API(priv->ucode_ver),
2194
IWL_UCODE_SERIAL(priv->ucode_ver));
2196
IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2198
IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2200
IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2202
IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2204
IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2206
IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2210
/* Verify size of file vs. image size info in file's header */
2211
if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2212
inst_size + data_size + init_size +
2213
init_data_size + boot_size) {
2215
IWL_DEBUG_INFO(priv,
2216
"uCode file size %zd does not match expected size\n",
2222
/* Verify that uCode images will fit in card's SRAM */
2223
if (inst_size > IWL39_MAX_INST_SIZE) {
2224
IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2230
if (data_size > IWL39_MAX_DATA_SIZE) {
2231
IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2236
if (init_size > IWL39_MAX_INST_SIZE) {
2237
IWL_DEBUG_INFO(priv,
2238
"uCode init instr len %d too large to fit in\n",
2243
if (init_data_size > IWL39_MAX_DATA_SIZE) {
2244
IWL_DEBUG_INFO(priv,
2245
"uCode init data len %d too large to fit in\n",
2250
if (boot_size > IWL39_MAX_BSM_SIZE) {
2251
IWL_DEBUG_INFO(priv,
2252
"uCode boot instr len %d too large to fit in\n",
2258
/* Allocate ucode buffers for card's bus-master loading ... */
2260
/* Runtime instructions and 2 copies of data:
2261
* 1) unmodified from disk
2262
* 2) backup cache for save/restore during power-downs */
2263
priv->ucode_code.len = inst_size;
2264
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2266
priv->ucode_data.len = data_size;
2267
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2269
priv->ucode_data_backup.len = data_size;
2270
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2272
if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2273
!priv->ucode_data_backup.v_addr)
2276
/* Initialization instructions and data */
2277
if (init_size && init_data_size) {
2278
priv->ucode_init.len = init_size;
2279
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2281
priv->ucode_init_data.len = init_data_size;
2282
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2284
if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2288
/* Bootstrap (instructions only, no data) */
2290
priv->ucode_boot.len = boot_size;
2291
iwl_legacy_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2293
if (!priv->ucode_boot.v_addr)
2297
/* Copy images into buffers for card's bus-master reads ... */
2299
/* Runtime instructions (first block of data in file) */
2301
IWL_DEBUG_INFO(priv,
2302
"Copying (but not loading) uCode instr len %zd\n", len);
2303
memcpy(priv->ucode_code.v_addr, src, len);
2306
IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2307
priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2309
/* Runtime data (2nd block)
2310
* NOTE: Copy into backup buffer will be done in iwl3945_up() */
2312
IWL_DEBUG_INFO(priv,
2313
"Copying (but not loading) uCode data len %zd\n", len);
2314
memcpy(priv->ucode_data.v_addr, src, len);
2315
memcpy(priv->ucode_data_backup.v_addr, src, len);
2318
/* Initialization instructions (3rd block) */
2321
IWL_DEBUG_INFO(priv,
2322
"Copying (but not loading) init instr len %zd\n", len);
2323
memcpy(priv->ucode_init.v_addr, src, len);
2327
/* Initialization data (4th block) */
2328
if (init_data_size) {
2329
len = init_data_size;
2330
IWL_DEBUG_INFO(priv,
2331
"Copying (but not loading) init data len %zd\n", len);
2332
memcpy(priv->ucode_init_data.v_addr, src, len);
2336
/* Bootstrap instructions (5th block) */
2338
IWL_DEBUG_INFO(priv,
2339
"Copying (but not loading) boot instr len %zd\n", len);
2340
memcpy(priv->ucode_boot.v_addr, src, len);
2342
/* We have our copies now, allow OS release its copies */
2343
release_firmware(ucode_raw);
2347
IWL_ERR(priv, "failed to allocate pci memory\n");
2349
iwl3945_dealloc_ucode_pci(priv);
2352
release_firmware(ucode_raw);
2360
* iwl3945_set_ucode_ptrs - Set uCode address location
2362
* Tell initialization uCode where to find runtime uCode.
2364
* BSM registers initially contain pointers to initialization uCode.
2365
* We need to replace them to load runtime uCode inst and data,
2366
* and to save runtime data when powering down.
2368
static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2373
/* bits 31:0 for 3945 */
2374
pinst = priv->ucode_code.p_addr;
2375
pdata = priv->ucode_data_backup.p_addr;
2377
/* Tell bootstrap uCode where to find image to load */
2378
iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2379
iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2380
iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2381
priv->ucode_data.len);
2383
/* Inst byte count must be last to set up, bit 31 signals uCode
2384
* that all new ptr/size info is in place */
2385
iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2386
priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2388
IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2394
* iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2396
* Called after REPLY_ALIVE notification received from "initialize" uCode.
2398
* Tell "initialize" uCode to go ahead and load the runtime uCode.
2400
static void iwl3945_init_alive_start(struct iwl_priv *priv)
2402
/* Check alive response for "valid" sign from uCode */
2403
if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2404
/* We had an error bringing up the hardware, so take it
2405
* all the way back down so we can try again */
2406
IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2410
/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2411
* This is a paranoid check, because we would not have gotten the
2412
* "initialize" alive if code weren't properly loaded. */
2413
if (iwl3945_verify_ucode(priv)) {
2414
/* Runtime instruction load was bad;
2415
* take it all the way back down so we can try again */
2416
IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2420
/* Send pointers to protocol/runtime uCode image ... init code will
2421
* load and launch runtime uCode, which will send us another "Alive"
2423
IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2424
if (iwl3945_set_ucode_ptrs(priv)) {
2425
/* Runtime instruction load won't happen;
2426
* take it all the way back down so we can try again */
2427
IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2433
queue_work(priv->workqueue, &priv->restart);
2437
* iwl3945_alive_start - called after REPLY_ALIVE notification received
2438
* from protocol/runtime uCode (initialization uCode's
2439
* Alive gets handled by iwl3945_init_alive_start()).
2441
static void iwl3945_alive_start(struct iwl_priv *priv)
2443
int thermal_spin = 0;
2445
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2447
IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2449
if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2450
/* We had an error bringing up the hardware, so take it
2451
* all the way back down so we can try again */
2452
IWL_DEBUG_INFO(priv, "Alive failed.\n");
2456
/* Initialize uCode has loaded Runtime uCode ... verify inst image.
2457
* This is a paranoid check, because we would not have gotten the
2458
* "runtime" alive if code weren't properly loaded. */
2459
if (iwl3945_verify_ucode(priv)) {
2460
/* Runtime instruction load was bad;
2461
* take it all the way back down so we can try again */
2462
IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2466
rfkill = iwl_legacy_read_prph(priv, APMG_RFKILL_REG);
2467
IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2470
clear_bit(STATUS_RF_KILL_HW, &priv->status);
2471
/* if RFKILL is not on, then wait for thermal
2472
* sensor in adapter to kick in */
2473
while (iwl3945_hw_get_temperature(priv) == 0) {
2479
IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2482
set_bit(STATUS_RF_KILL_HW, &priv->status);
2484
/* After the ALIVE response, we can send commands to 3945 uCode */
2485
set_bit(STATUS_ALIVE, &priv->status);
2487
/* Enable watchdog to monitor the driver tx queues */
2488
iwl_legacy_setup_watchdog(priv);
2490
if (iwl_legacy_is_rfkill(priv))
2493
ieee80211_wake_queues(priv->hw);
2495
priv->active_rate = IWL_RATES_MASK_3945;
2497
iwl_legacy_power_update_mode(priv, true);
2499
if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
2500
struct iwl3945_rxon_cmd *active_rxon =
2501
(struct iwl3945_rxon_cmd *)(&ctx->active);
2503
ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2504
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2506
/* Initialize our rx_config data */
2507
iwl_legacy_connection_init_rx_config(priv, ctx);
2510
/* Configure Bluetooth device coexistence support */
2511
iwl_legacy_send_bt_config(priv);
2513
set_bit(STATUS_READY, &priv->status);
2515
/* Configure the adapter for unassociated operation */
2516
iwl3945_commit_rxon(priv, ctx);
2518
iwl3945_reg_txpower_periodic(priv);
2520
IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2521
wake_up_interruptible(&priv->wait_command_queue);
2526
queue_work(priv->workqueue, &priv->restart);
2529
static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2531
static void __iwl3945_down(struct iwl_priv *priv)
2533
unsigned long flags;
2536
IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2538
iwl_legacy_scan_cancel_timeout(priv, 200);
2540
exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2542
/* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2543
* to prevent rearm timer */
2544
del_timer_sync(&priv->watchdog);
2546
/* Station information will now be cleared in device */
2547
iwl_legacy_clear_ucode_stations(priv, NULL);
2548
iwl_legacy_dealloc_bcast_stations(priv);
2549
iwl_legacy_clear_driver_stations(priv);
2551
/* Unblock any waiting calls */
2552
wake_up_interruptible_all(&priv->wait_command_queue);
2554
/* Wipe out the EXIT_PENDING status bit if we are not actually
2555
* exiting the module */
2557
clear_bit(STATUS_EXIT_PENDING, &priv->status);
2559
/* stop and reset the on-board processor */
2560
iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2562
/* tell the device to stop sending interrupts */
2563
spin_lock_irqsave(&priv->lock, flags);
2564
iwl_legacy_disable_interrupts(priv);
2565
spin_unlock_irqrestore(&priv->lock, flags);
2566
iwl3945_synchronize_irq(priv);
2568
if (priv->mac80211_registered)
2569
ieee80211_stop_queues(priv->hw);
2571
/* If we have not previously called iwl3945_init() then
2572
* clear all bits but the RF Kill bits and return */
2573
if (!iwl_legacy_is_init(priv)) {
2574
priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2576
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2577
STATUS_GEO_CONFIGURED |
2578
test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2579
STATUS_EXIT_PENDING;
2583
/* ...otherwise clear out all the status bits but the RF Kill
2584
* bit and continue taking the NIC down. */
2585
priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2587
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2588
STATUS_GEO_CONFIGURED |
2589
test_bit(STATUS_FW_ERROR, &priv->status) <<
2591
test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2592
STATUS_EXIT_PENDING;
2594
iwl3945_hw_txq_ctx_stop(priv);
2595
iwl3945_hw_rxq_stop(priv);
2597
/* Power-down device's busmaster DMA clocks */
2598
iwl_legacy_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2601
/* Stop the device, and put it in low power state */
2602
iwl_legacy_apm_stop(priv);
2605
memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2607
if (priv->beacon_skb)
2608
dev_kfree_skb(priv->beacon_skb);
2609
priv->beacon_skb = NULL;
2611
/* clear out any free frames */
2612
iwl3945_clear_free_frames(priv);
2615
static void iwl3945_down(struct iwl_priv *priv)
2617
mutex_lock(&priv->mutex);
2618
__iwl3945_down(priv);
2619
mutex_unlock(&priv->mutex);
2621
iwl3945_cancel_deferred_work(priv);
2624
#define MAX_HW_RESTARTS 5
2626
static int iwl3945_alloc_bcast_station(struct iwl_priv *priv)
2628
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2629
unsigned long flags;
2632
spin_lock_irqsave(&priv->sta_lock, flags);
2633
sta_id = iwl_legacy_prep_station(priv, ctx,
2634
iwlegacy_bcast_addr, false, NULL);
2635
if (sta_id == IWL_INVALID_STATION) {
2636
IWL_ERR(priv, "Unable to prepare broadcast station\n");
2637
spin_unlock_irqrestore(&priv->sta_lock, flags);
2642
priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
2643
priv->stations[sta_id].used |= IWL_STA_BCAST;
2644
spin_unlock_irqrestore(&priv->sta_lock, flags);
2649
static int __iwl3945_up(struct iwl_priv *priv)
2653
rc = iwl3945_alloc_bcast_station(priv);
2657
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2658
IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2662
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2663
IWL_ERR(priv, "ucode not available for device bring up\n");
2667
/* If platform's RF_KILL switch is NOT set to KILL */
2668
if (iwl_read32(priv, CSR_GP_CNTRL) &
2669
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2670
clear_bit(STATUS_RF_KILL_HW, &priv->status);
2672
set_bit(STATUS_RF_KILL_HW, &priv->status);
2673
IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2677
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2679
rc = iwl3945_hw_nic_init(priv);
2681
IWL_ERR(priv, "Unable to int nic\n");
2685
/* make sure rfkill handshake bits are cleared */
2686
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2687
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2688
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2690
/* clear (again), then enable host interrupts */
2691
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2692
iwl_legacy_enable_interrupts(priv);
2694
/* really make sure rfkill handshake bits are cleared */
2695
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2696
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2698
/* Copy original ucode data image from disk into backup cache.
2699
* This will be used to initialize the on-board processor's
2700
* data SRAM for a clean start when the runtime program first loads. */
2701
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2702
priv->ucode_data.len);
2704
/* We return success when we resume from suspend and rf_kill is on. */
2705
if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2708
for (i = 0; i < MAX_HW_RESTARTS; i++) {
2710
/* load bootstrap state machine,
2711
* load bootstrap program into processor's memory,
2712
* prepare to load the "initialize" uCode */
2713
rc = priv->cfg->ops->lib->load_ucode(priv);
2717
"Unable to set up bootstrap uCode: %d\n", rc);
2721
/* start card; "initialize" will load runtime ucode */
2722
iwl3945_nic_start(priv);
2724
IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2729
set_bit(STATUS_EXIT_PENDING, &priv->status);
2730
__iwl3945_down(priv);
2731
clear_bit(STATUS_EXIT_PENDING, &priv->status);
2733
/* tried to restart and config the device for as long as our
2734
* patience could withstand */
2735
IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2740
/*****************************************************************************
2742
* Workqueue callbacks
2744
*****************************************************************************/
2746
static void iwl3945_bg_init_alive_start(struct work_struct *data)
2748
struct iwl_priv *priv =
2749
container_of(data, struct iwl_priv, init_alive_start.work);
2751
mutex_lock(&priv->mutex);
2752
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2755
iwl3945_init_alive_start(priv);
2757
mutex_unlock(&priv->mutex);
2760
static void iwl3945_bg_alive_start(struct work_struct *data)
2762
struct iwl_priv *priv =
2763
container_of(data, struct iwl_priv, alive_start.work);
2765
mutex_lock(&priv->mutex);
2766
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2769
iwl3945_alive_start(priv);
2771
mutex_unlock(&priv->mutex);
2775
* 3945 cannot interrupt driver when hardware rf kill switch toggles;
2776
* driver must poll CSR_GP_CNTRL_REG register for change. This register
2777
* *is* readable even when device has been SW_RESET into low power mode
2778
* (e.g. during RF KILL).
2780
static void iwl3945_rfkill_poll(struct work_struct *data)
2782
struct iwl_priv *priv =
2783
container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2784
bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2785
bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2786
& CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2788
if (new_rfkill != old_rfkill) {
2790
set_bit(STATUS_RF_KILL_HW, &priv->status);
2792
clear_bit(STATUS_RF_KILL_HW, &priv->status);
2794
wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2796
IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2797
new_rfkill ? "disable radio" : "enable radio");
2800
/* Keep this running, even if radio now enabled. This will be
2801
* cancelled in mac_start() if system decides to start again */
2802
queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2803
round_jiffies_relative(2 * HZ));
2807
int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2809
struct iwl_host_cmd cmd = {
2810
.id = REPLY_SCAN_CMD,
2811
.len = sizeof(struct iwl3945_scan_cmd),
2812
.flags = CMD_SIZE_HUGE,
2814
struct iwl3945_scan_cmd *scan;
2816
enum ieee80211_band band;
2817
bool is_active = false;
2820
lockdep_assert_held(&priv->mutex);
2822
if (!priv->scan_cmd) {
2823
priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2824
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2825
if (!priv->scan_cmd) {
2826
IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2830
scan = priv->scan_cmd;
2831
memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2833
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2834
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2836
if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
2839
u32 suspend_time = 100;
2840
u32 scan_suspend_time = 100;
2842
IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2844
if (priv->is_internal_short_scan)
2847
interval = vif->bss_conf.beacon_int;
2849
scan->suspend_time = 0;
2850
scan->max_out_time = cpu_to_le32(200 * 1024);
2852
interval = suspend_time;
2854
* suspend time format:
2855
* 0-19: beacon interval in usec (time before exec.)
2857
* 24-31: number of beacons (suspend between channels)
2860
extra = (suspend_time / interval) << 24;
2861
scan_suspend_time = 0xFF0FFFFF &
2862
(extra | ((suspend_time % interval) * 1024));
2864
scan->suspend_time = cpu_to_le32(scan_suspend_time);
2865
IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2866
scan_suspend_time, interval);
2869
if (priv->is_internal_short_scan) {
2870
IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2871
} else if (priv->scan_request->n_ssids) {
2873
IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2874
for (i = 0; i < priv->scan_request->n_ssids; i++) {
2875
/* always does wildcard anyway */
2876
if (!priv->scan_request->ssids[i].ssid_len)
2878
scan->direct_scan[p].id = WLAN_EID_SSID;
2879
scan->direct_scan[p].len =
2880
priv->scan_request->ssids[i].ssid_len;
2881
memcpy(scan->direct_scan[p].ssid,
2882
priv->scan_request->ssids[i].ssid,
2883
priv->scan_request->ssids[i].ssid_len);
2889
IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2891
/* We don't build a direct scan probe request; the uCode will do
2892
* that based on the direct_mask added to each channel entry */
2893
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2894
scan->tx_cmd.sta_id = priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
2895
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2897
/* flags + rate selection */
2899
switch (priv->scan_band) {
2900
case IEEE80211_BAND_2GHZ:
2901
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2902
scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2903
band = IEEE80211_BAND_2GHZ;
2905
case IEEE80211_BAND_5GHZ:
2906
scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2907
band = IEEE80211_BAND_5GHZ;
2910
IWL_WARN(priv, "Invalid scan band\n");
2915
* If active scaning is requested but a certain channel
2916
* is marked passive, we can do active scanning if we
2917
* detect transmissions.
2919
scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2920
IWL_GOOD_CRC_TH_DISABLED;
2922
if (!priv->is_internal_short_scan) {
2923
scan->tx_cmd.len = cpu_to_le16(
2924
iwl_legacy_fill_probe_req(priv,
2925
(struct ieee80211_mgmt *)scan->data,
2927
priv->scan_request->ie,
2928
priv->scan_request->ie_len,
2929
IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2931
/* use bcast addr, will not be transmitted but must be valid */
2932
scan->tx_cmd.len = cpu_to_le16(
2933
iwl_legacy_fill_probe_req(priv,
2934
(struct ieee80211_mgmt *)scan->data,
2935
iwlegacy_bcast_addr, NULL, 0,
2936
IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2938
/* select Rx antennas */
2939
scan->flags |= iwl3945_get_antenna_flags(priv);
2941
if (priv->is_internal_short_scan) {
2942
scan->channel_count =
2943
iwl3945_get_single_channel_for_scan(priv, vif, band,
2944
(void *)&scan->data[le16_to_cpu(
2945
scan->tx_cmd.len)]);
2947
scan->channel_count =
2948
iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2949
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2952
if (scan->channel_count == 0) {
2953
IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2957
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2958
scan->channel_count * sizeof(struct iwl3945_scan_channel);
2960
scan->len = cpu_to_le16(cmd.len);
2962
set_bit(STATUS_SCAN_HW, &priv->status);
2963
ret = iwl_legacy_send_cmd_sync(priv, &cmd);
2965
clear_bit(STATUS_SCAN_HW, &priv->status);
2969
void iwl3945_post_scan(struct iwl_priv *priv)
2971
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2974
* Since setting the RXON may have been deferred while
2975
* performing the scan, fire one off if needed
2977
if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
2978
iwl3945_commit_rxon(priv, ctx);
2981
static void iwl3945_bg_restart(struct work_struct *data)
2983
struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2985
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2988
if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2989
struct iwl_rxon_context *ctx;
2990
mutex_lock(&priv->mutex);
2991
for_each_context(priv, ctx)
2994
mutex_unlock(&priv->mutex);
2996
ieee80211_restart_hw(priv->hw);
3000
mutex_lock(&priv->mutex);
3001
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3002
mutex_unlock(&priv->mutex);
3007
mutex_unlock(&priv->mutex);
3011
static void iwl3945_bg_rx_replenish(struct work_struct *data)
3013
struct iwl_priv *priv =
3014
container_of(data, struct iwl_priv, rx_replenish);
3016
mutex_lock(&priv->mutex);
3017
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3020
iwl3945_rx_replenish(priv);
3022
mutex_unlock(&priv->mutex);
3025
void iwl3945_post_associate(struct iwl_priv *priv)
3028
struct ieee80211_conf *conf = NULL;
3029
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3031
if (!ctx->vif || !priv->is_open)
3034
IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3035
ctx->vif->bss_conf.aid, ctx->active.bssid_addr);
3037
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3040
iwl_legacy_scan_cancel_timeout(priv, 200);
3042
conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw);
3044
ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3045
iwl3945_commit_rxon(priv, ctx);
3047
rc = iwl_legacy_send_rxon_timing(priv, ctx);
3049
IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3050
"Attempting to continue.\n");
3052
ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3054
ctx->staging.assoc_id = cpu_to_le16(ctx->vif->bss_conf.aid);
3056
IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3057
ctx->vif->bss_conf.aid, ctx->vif->bss_conf.beacon_int);
3059
if (ctx->vif->bss_conf.use_short_preamble)
3060
ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3062
ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3064
if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3065
if (ctx->vif->bss_conf.use_short_slot)
3066
ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
3068
ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3071
iwl3945_commit_rxon(priv, ctx);
3073
switch (ctx->vif->type) {
3074
case NL80211_IFTYPE_STATION:
3075
iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3077
case NL80211_IFTYPE_ADHOC:
3078
iwl3945_send_beacon_cmd(priv);
3081
IWL_ERR(priv, "%s Should not be called in %d mode\n",
3082
__func__, ctx->vif->type);
3087
/*****************************************************************************
3089
* mac80211 entry point functions
3091
*****************************************************************************/
3093
#define UCODE_READY_TIMEOUT (2 * HZ)
3095
static int iwl3945_mac_start(struct ieee80211_hw *hw)
3097
struct iwl_priv *priv = hw->priv;
3100
IWL_DEBUG_MAC80211(priv, "enter\n");
3102
/* we should be verifying the device is ready to be opened */
3103
mutex_lock(&priv->mutex);
3105
/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3106
* ucode filename and max sizes are card-specific. */
3108
if (!priv->ucode_code.len) {
3109
ret = iwl3945_read_ucode(priv);
3111
IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3112
mutex_unlock(&priv->mutex);
3113
goto out_release_irq;
3117
ret = __iwl3945_up(priv);
3119
mutex_unlock(&priv->mutex);
3122
goto out_release_irq;
3124
IWL_DEBUG_INFO(priv, "Start UP work.\n");
3126
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
3127
* mac80211 will not be run successfully. */
3128
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3129
test_bit(STATUS_READY, &priv->status),
3130
UCODE_READY_TIMEOUT);
3132
if (!test_bit(STATUS_READY, &priv->status)) {
3134
"Wait for START_ALIVE timeout after %dms.\n",
3135
jiffies_to_msecs(UCODE_READY_TIMEOUT));
3137
goto out_release_irq;
3141
/* ucode is running and will send rfkill notifications,
3142
* no need to poll the killswitch state anymore */
3143
cancel_delayed_work(&priv->_3945.rfkill_poll);
3146
IWL_DEBUG_MAC80211(priv, "leave\n");
3151
IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3155
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3157
struct iwl_priv *priv = hw->priv;
3159
IWL_DEBUG_MAC80211(priv, "enter\n");
3161
if (!priv->is_open) {
3162
IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3170
flush_workqueue(priv->workqueue);
3172
/* start polling the killswitch state again */
3173
queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3174
round_jiffies_relative(2 * HZ));
3176
IWL_DEBUG_MAC80211(priv, "leave\n");
3179
static void iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3181
struct iwl_priv *priv = hw->priv;
3183
IWL_DEBUG_MAC80211(priv, "enter\n");
3185
IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3186
ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3188
if (iwl3945_tx_skb(priv, skb))
3189
dev_kfree_skb_any(skb);
3191
IWL_DEBUG_MAC80211(priv, "leave\n");
3194
void iwl3945_config_ap(struct iwl_priv *priv)
3196
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3197
struct ieee80211_vif *vif = ctx->vif;
3200
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3203
/* The following should be done only at AP bring up */
3204
if (!(iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS))) {
3206
/* RXON - unassoc (to set timing command) */
3207
ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3208
iwl3945_commit_rxon(priv, ctx);
3211
rc = iwl_legacy_send_rxon_timing(priv, ctx);
3213
IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3214
"Attempting to continue.\n");
3216
ctx->staging.assoc_id = 0;
3218
if (vif->bss_conf.use_short_preamble)
3219
ctx->staging.flags |=
3220
RXON_FLG_SHORT_PREAMBLE_MSK;
3222
ctx->staging.flags &=
3223
~RXON_FLG_SHORT_PREAMBLE_MSK;
3225
if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3226
if (vif->bss_conf.use_short_slot)
3227
ctx->staging.flags |=
3228
RXON_FLG_SHORT_SLOT_MSK;
3230
ctx->staging.flags &=
3231
~RXON_FLG_SHORT_SLOT_MSK;
3233
/* restore RXON assoc */
3234
ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
3235
iwl3945_commit_rxon(priv, ctx);
3237
iwl3945_send_beacon_cmd(priv);
3240
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3241
struct ieee80211_vif *vif,
3242
struct ieee80211_sta *sta,
3243
struct ieee80211_key_conf *key)
3245
struct iwl_priv *priv = hw->priv;
3247
u8 sta_id = IWL_INVALID_STATION;
3250
IWL_DEBUG_MAC80211(priv, "enter\n");
3252
if (iwl3945_mod_params.sw_crypto) {
3253
IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3258
* To support IBSS RSN, don't program group keys in IBSS, the
3259
* hardware will then not attempt to decrypt the frames.
3261
if (vif->type == NL80211_IFTYPE_ADHOC &&
3262
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
3265
static_key = !iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS);
3268
sta_id = iwl_legacy_sta_id_or_broadcast(
3269
priv, &priv->contexts[IWL_RXON_CTX_BSS], sta);
3270
if (sta_id == IWL_INVALID_STATION)
3274
mutex_lock(&priv->mutex);
3275
iwl_legacy_scan_cancel_timeout(priv, 100);
3280
ret = iwl3945_set_static_key(priv, key);
3282
ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3283
IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3287
ret = iwl3945_remove_static_key(priv);
3289
ret = iwl3945_clear_sta_key_info(priv, sta_id);
3290
IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3296
mutex_unlock(&priv->mutex);
3297
IWL_DEBUG_MAC80211(priv, "leave\n");
3302
static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3303
struct ieee80211_vif *vif,
3304
struct ieee80211_sta *sta)
3306
struct iwl_priv *priv = hw->priv;
3307
struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3309
bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3312
IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3314
mutex_lock(&priv->mutex);
3315
IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3317
sta_priv->common.sta_id = IWL_INVALID_STATION;
3320
ret = iwl_legacy_add_station_common(priv,
3321
&priv->contexts[IWL_RXON_CTX_BSS],
3322
sta->addr, is_ap, sta, &sta_id);
3324
IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3326
/* Should we return success if return code is EEXIST ? */
3327
mutex_unlock(&priv->mutex);
3331
sta_priv->common.sta_id = sta_id;
3333
/* Initialize rate scaling */
3334
IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3336
iwl3945_rs_rate_init(priv, sta, sta_id);
3337
mutex_unlock(&priv->mutex);
3342
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
3343
unsigned int changed_flags,
3344
unsigned int *total_flags,
3347
struct iwl_priv *priv = hw->priv;
3348
__le32 filter_or = 0, filter_nand = 0;
3349
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3351
#define CHK(test, flag) do { \
3352
if (*total_flags & (test)) \
3353
filter_or |= (flag); \
3355
filter_nand |= (flag); \
3358
IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3359
changed_flags, *total_flags);
3361
CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3362
CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3363
CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3367
mutex_lock(&priv->mutex);
3369
ctx->staging.filter_flags &= ~filter_nand;
3370
ctx->staging.filter_flags |= filter_or;
3373
* Not committing directly because hardware can perform a scan,
3374
* but even if hw is ready, committing here breaks for some reason,
3375
* we'll eventually commit the filter flags change anyway.
3378
mutex_unlock(&priv->mutex);
3381
* Receiving all multicast frames is always enabled by the
3382
* default flags setup in iwl_legacy_connection_init_rx_config()
3383
* since we currently do not support programming multicast
3384
* filters into the device.
3386
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3387
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3391
/*****************************************************************************
3395
*****************************************************************************/
3397
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
3400
* The following adds a new attribute to the sysfs representation
3401
* of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3402
* used for controlling the debug level.
3404
* See the level definitions in iwl for details.
3406
* The debug_level being managed using sysfs below is a per device debug
3407
* level that is used instead of the global debug level if it (the per
3408
* device debug level) is set.
3410
static ssize_t iwl3945_show_debug_level(struct device *d,
3411
struct device_attribute *attr, char *buf)
3413
struct iwl_priv *priv = dev_get_drvdata(d);
3414
return sprintf(buf, "0x%08X\n", iwl_legacy_get_debug_level(priv));
3416
static ssize_t iwl3945_store_debug_level(struct device *d,
3417
struct device_attribute *attr,
3418
const char *buf, size_t count)
3420
struct iwl_priv *priv = dev_get_drvdata(d);
3424
ret = strict_strtoul(buf, 0, &val);
3426
IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3428
priv->debug_level = val;
3429
if (iwl_legacy_alloc_traffic_mem(priv))
3431
"Not enough memory to generate traffic log\n");
3433
return strnlen(buf, count);
3436
static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3437
iwl3945_show_debug_level, iwl3945_store_debug_level);
3439
#endif /* CONFIG_IWLWIFI_LEGACY_DEBUG */
3441
static ssize_t iwl3945_show_temperature(struct device *d,
3442
struct device_attribute *attr, char *buf)
3444
struct iwl_priv *priv = dev_get_drvdata(d);
3446
if (!iwl_legacy_is_alive(priv))
3449
return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3452
static DEVICE_ATTR(temperature, S_IRUGO, iwl3945_show_temperature, NULL);
3454
static ssize_t iwl3945_show_tx_power(struct device *d,
3455
struct device_attribute *attr, char *buf)
3457
struct iwl_priv *priv = dev_get_drvdata(d);
3458
return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3461
static ssize_t iwl3945_store_tx_power(struct device *d,
3462
struct device_attribute *attr,
3463
const char *buf, size_t count)
3465
struct iwl_priv *priv = dev_get_drvdata(d);
3466
char *p = (char *)buf;
3469
val = simple_strtoul(p, &p, 10);
3471
IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3473
iwl3945_hw_reg_set_txpower(priv, val);
3478
static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, iwl3945_show_tx_power, iwl3945_store_tx_power);
3480
static ssize_t iwl3945_show_flags(struct device *d,
3481
struct device_attribute *attr, char *buf)
3483
struct iwl_priv *priv = dev_get_drvdata(d);
3484
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3486
return sprintf(buf, "0x%04X\n", ctx->active.flags);
3489
static ssize_t iwl3945_store_flags(struct device *d,
3490
struct device_attribute *attr,
3491
const char *buf, size_t count)
3493
struct iwl_priv *priv = dev_get_drvdata(d);
3494
u32 flags = simple_strtoul(buf, NULL, 0);
3495
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3497
mutex_lock(&priv->mutex);
3498
if (le32_to_cpu(ctx->staging.flags) != flags) {
3499
/* Cancel any currently running scans... */
3500
if (iwl_legacy_scan_cancel_timeout(priv, 100))
3501
IWL_WARN(priv, "Could not cancel scan.\n");
3503
IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3505
ctx->staging.flags = cpu_to_le32(flags);
3506
iwl3945_commit_rxon(priv, ctx);
3509
mutex_unlock(&priv->mutex);
3514
static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, iwl3945_show_flags, iwl3945_store_flags);
3516
static ssize_t iwl3945_show_filter_flags(struct device *d,
3517
struct device_attribute *attr, char *buf)
3519
struct iwl_priv *priv = dev_get_drvdata(d);
3520
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3522
return sprintf(buf, "0x%04X\n",
3523
le32_to_cpu(ctx->active.filter_flags));
3526
static ssize_t iwl3945_store_filter_flags(struct device *d,
3527
struct device_attribute *attr,
3528
const char *buf, size_t count)
3530
struct iwl_priv *priv = dev_get_drvdata(d);
3531
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3532
u32 filter_flags = simple_strtoul(buf, NULL, 0);
3534
mutex_lock(&priv->mutex);
3535
if (le32_to_cpu(ctx->staging.filter_flags) != filter_flags) {
3536
/* Cancel any currently running scans... */
3537
if (iwl_legacy_scan_cancel_timeout(priv, 100))
3538
IWL_WARN(priv, "Could not cancel scan.\n");
3540
IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3541
"0x%04X\n", filter_flags);
3542
ctx->staging.filter_flags =
3543
cpu_to_le32(filter_flags);
3544
iwl3945_commit_rxon(priv, ctx);
3547
mutex_unlock(&priv->mutex);
3552
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, iwl3945_show_filter_flags,
3553
iwl3945_store_filter_flags);
3555
static ssize_t iwl3945_show_measurement(struct device *d,
3556
struct device_attribute *attr, char *buf)
3558
struct iwl_priv *priv = dev_get_drvdata(d);
3559
struct iwl_spectrum_notification measure_report;
3560
u32 size = sizeof(measure_report), len = 0, ofs = 0;
3561
u8 *data = (u8 *)&measure_report;
3562
unsigned long flags;
3564
spin_lock_irqsave(&priv->lock, flags);
3565
if (!(priv->measurement_status & MEASUREMENT_READY)) {
3566
spin_unlock_irqrestore(&priv->lock, flags);
3569
memcpy(&measure_report, &priv->measure_report, size);
3570
priv->measurement_status = 0;
3571
spin_unlock_irqrestore(&priv->lock, flags);
3573
while (size && (PAGE_SIZE - len)) {
3574
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3575
PAGE_SIZE - len, 1);
3577
if (PAGE_SIZE - len)
3581
size -= min(size, 16U);
3587
static ssize_t iwl3945_store_measurement(struct device *d,
3588
struct device_attribute *attr,
3589
const char *buf, size_t count)
3591
struct iwl_priv *priv = dev_get_drvdata(d);
3592
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3593
struct ieee80211_measurement_params params = {
3594
.channel = le16_to_cpu(ctx->active.channel),
3595
.start_time = cpu_to_le64(priv->_3945.last_tsf),
3596
.duration = cpu_to_le16(1),
3598
u8 type = IWL_MEASURE_BASIC;
3604
strncpy(buffer, buf, min(sizeof(buffer), count));
3605
channel = simple_strtoul(p, NULL, 0);
3607
params.channel = channel;
3610
while (*p && *p != ' ')
3613
type = simple_strtoul(p + 1, NULL, 0);
3616
IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3617
"channel %d (for '%s')\n", type, params.channel, buf);
3618
iwl3945_get_measurement(priv, ¶ms, type);
3623
static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3624
iwl3945_show_measurement, iwl3945_store_measurement);
3626
static ssize_t iwl3945_store_retry_rate(struct device *d,
3627
struct device_attribute *attr,
3628
const char *buf, size_t count)
3630
struct iwl_priv *priv = dev_get_drvdata(d);
3632
priv->retry_rate = simple_strtoul(buf, NULL, 0);
3633
if (priv->retry_rate <= 0)
3634
priv->retry_rate = 1;
3639
static ssize_t iwl3945_show_retry_rate(struct device *d,
3640
struct device_attribute *attr, char *buf)
3642
struct iwl_priv *priv = dev_get_drvdata(d);
3643
return sprintf(buf, "%d", priv->retry_rate);
3646
static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, iwl3945_show_retry_rate,
3647
iwl3945_store_retry_rate);
3650
static ssize_t iwl3945_show_channels(struct device *d,
3651
struct device_attribute *attr, char *buf)
3653
/* all this shit doesn't belong into sysfs anyway */
3657
static DEVICE_ATTR(channels, S_IRUSR, iwl3945_show_channels, NULL);
3659
static ssize_t iwl3945_show_antenna(struct device *d,
3660
struct device_attribute *attr, char *buf)
3662
struct iwl_priv *priv = dev_get_drvdata(d);
3664
if (!iwl_legacy_is_alive(priv))
3667
return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3670
static ssize_t iwl3945_store_antenna(struct device *d,
3671
struct device_attribute *attr,
3672
const char *buf, size_t count)
3674
struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3680
if (sscanf(buf, "%1i", &ant) != 1) {
3681
IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3685
if ((ant >= 0) && (ant <= 2)) {
3686
IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3687
iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3689
IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3695
static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, iwl3945_show_antenna, iwl3945_store_antenna);
3697
static ssize_t iwl3945_show_status(struct device *d,
3698
struct device_attribute *attr, char *buf)
3700
struct iwl_priv *priv = dev_get_drvdata(d);
3701
if (!iwl_legacy_is_alive(priv))
3703
return sprintf(buf, "0x%08x\n", (int)priv->status);
3706
static DEVICE_ATTR(status, S_IRUGO, iwl3945_show_status, NULL);
3708
static ssize_t iwl3945_dump_error_log(struct device *d,
3709
struct device_attribute *attr,
3710
const char *buf, size_t count)
3712
struct iwl_priv *priv = dev_get_drvdata(d);
3713
char *p = (char *)buf;
3716
iwl3945_dump_nic_error_log(priv);
3718
return strnlen(buf, count);
3721
static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, iwl3945_dump_error_log);
3723
/*****************************************************************************
3725
* driver setup and tear down
3727
*****************************************************************************/
3729
static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3731
priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3733
init_waitqueue_head(&priv->wait_command_queue);
3735
INIT_WORK(&priv->restart, iwl3945_bg_restart);
3736
INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3737
INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3738
INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3739
INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3741
iwl_legacy_setup_scan_deferred_work(priv);
3743
iwl3945_hw_setup_deferred_work(priv);
3745
init_timer(&priv->watchdog);
3746
priv->watchdog.data = (unsigned long)priv;
3747
priv->watchdog.function = iwl_legacy_bg_watchdog;
3749
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3750
iwl3945_irq_tasklet, (unsigned long)priv);
3753
static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3755
iwl3945_hw_cancel_deferred_work(priv);
3757
cancel_delayed_work_sync(&priv->init_alive_start);
3758
cancel_delayed_work(&priv->alive_start);
3760
iwl_legacy_cancel_scan_deferred_work(priv);
3763
static struct attribute *iwl3945_sysfs_entries[] = {
3764
&dev_attr_antenna.attr,
3765
&dev_attr_channels.attr,
3766
&dev_attr_dump_errors.attr,
3767
&dev_attr_flags.attr,
3768
&dev_attr_filter_flags.attr,
3769
&dev_attr_measurement.attr,
3770
&dev_attr_retry_rate.attr,
3771
&dev_attr_status.attr,
3772
&dev_attr_temperature.attr,
3773
&dev_attr_tx_power.attr,
3774
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
3775
&dev_attr_debug_level.attr,
3780
static struct attribute_group iwl3945_attribute_group = {
3781
.name = NULL, /* put in device directory */
3782
.attrs = iwl3945_sysfs_entries,
3785
struct ieee80211_ops iwl3945_hw_ops = {
3786
.tx = iwl3945_mac_tx,
3787
.start = iwl3945_mac_start,
3788
.stop = iwl3945_mac_stop,
3789
.add_interface = iwl_legacy_mac_add_interface,
3790
.remove_interface = iwl_legacy_mac_remove_interface,
3791
.change_interface = iwl_legacy_mac_change_interface,
3792
.config = iwl_legacy_mac_config,
3793
.configure_filter = iwl3945_configure_filter,
3794
.set_key = iwl3945_mac_set_key,
3795
.conf_tx = iwl_legacy_mac_conf_tx,
3796
.reset_tsf = iwl_legacy_mac_reset_tsf,
3797
.bss_info_changed = iwl_legacy_mac_bss_info_changed,
3798
.hw_scan = iwl_legacy_mac_hw_scan,
3799
.sta_add = iwl3945_mac_sta_add,
3800
.sta_remove = iwl_legacy_mac_sta_remove,
3801
.tx_last_beacon = iwl_legacy_mac_tx_last_beacon,
3804
static int iwl3945_init_drv(struct iwl_priv *priv)
3807
struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3809
priv->retry_rate = 1;
3810
priv->beacon_skb = NULL;
3812
spin_lock_init(&priv->sta_lock);
3813
spin_lock_init(&priv->hcmd_lock);
3815
INIT_LIST_HEAD(&priv->free_frames);
3817
mutex_init(&priv->mutex);
3819
priv->ieee_channels = NULL;
3820
priv->ieee_rates = NULL;
3821
priv->band = IEEE80211_BAND_2GHZ;
3823
priv->iw_mode = NL80211_IFTYPE_STATION;
3824
priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3826
/* initialize force reset */
3827
priv->force_reset[IWL_RF_RESET].reset_duration =
3828
IWL_DELAY_NEXT_FORCE_RF_RESET;
3829
priv->force_reset[IWL_FW_RESET].reset_duration =
3830
IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3832
if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3833
IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3838
ret = iwl_legacy_init_channel_map(priv);
3840
IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3844
/* Set up txpower settings in driver for all channels */
3845
if (iwl3945_txpower_set_from_eeprom(priv)) {
3847
goto err_free_channel_map;
3850
ret = iwl_legacy_init_geos(priv);
3852
IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3853
goto err_free_channel_map;
3855
iwl3945_init_hw_rates(priv, priv->ieee_rates);
3859
err_free_channel_map:
3860
iwl_legacy_free_channel_map(priv);
3865
#define IWL3945_MAX_PROBE_REQUEST 200
3867
static int iwl3945_setup_mac(struct iwl_priv *priv)
3870
struct ieee80211_hw *hw = priv->hw;
3872
hw->rate_control_algorithm = "iwl-3945-rs";
3873
hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3874
hw->vif_data_size = sizeof(struct iwl_vif_priv);
3876
/* Tell mac80211 our characteristics */
3877
hw->flags = IEEE80211_HW_SIGNAL_DBM |
3878
IEEE80211_HW_SPECTRUM_MGMT;
3880
hw->wiphy->interface_modes =
3881
priv->contexts[IWL_RXON_CTX_BSS].interface_modes;
3883
hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3884
WIPHY_FLAG_DISABLE_BEACON_HINTS |
3885
WIPHY_FLAG_IBSS_RSN;
3887
hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3888
/* we create the 802.11 header and a zero-length SSID element */
3889
hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3891
/* Default value; 4 EDCA QOS priorities */
3894
if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3895
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3896
&priv->bands[IEEE80211_BAND_2GHZ];
3898
if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3899
priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3900
&priv->bands[IEEE80211_BAND_5GHZ];
3902
iwl_legacy_leds_init(priv);
3904
ret = ieee80211_register_hw(priv->hw);
3906
IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3909
priv->mac80211_registered = 1;
3914
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3917
struct iwl_priv *priv;
3918
struct ieee80211_hw *hw;
3919
struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3920
struct iwl3945_eeprom *eeprom;
3921
unsigned long flags;
3923
/***********************
3924
* 1. Allocating HW data
3925
* ********************/
3927
/* mac80211 allocates memory for this device instance, including
3928
* space for this driver's private structure */
3929
hw = iwl_legacy_alloc_all(cfg);
3931
pr_err("Can not allocate network device\n");
3936
SET_IEEE80211_DEV(hw, &pdev->dev);
3938
priv->cmd_queue = IWL39_CMD_QUEUE_NUM;
3940
/* 3945 has only one valid context */
3941
priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3943
for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3944
priv->contexts[i].ctxid = i;
3946
priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3947
priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3948
priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3949
priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3950
priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3951
priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3952
priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3953
BIT(NL80211_IFTYPE_STATION) |
3954
BIT(NL80211_IFTYPE_ADHOC);
3955
priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3956
priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3957
priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3960
* Disabling hardware scan means that mac80211 will perform scans
3961
* "the hard way", rather than using device's scan.
3963
if (iwl3945_mod_params.disable_hw_scan) {
3964
IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3965
iwl3945_hw_ops.hw_scan = NULL;
3968
IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3970
priv->pci_dev = pdev;
3971
priv->inta_mask = CSR_INI_SET_MASK;
3973
if (iwl_legacy_alloc_traffic_mem(priv))
3974
IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3976
/***************************
3977
* 2. Initializing PCI bus
3978
* *************************/
3979
pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
3980
PCIE_LINK_STATE_CLKPM);
3982
if (pci_enable_device(pdev)) {
3984
goto out_ieee80211_free_hw;
3987
pci_set_master(pdev);
3989
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3991
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3993
IWL_WARN(priv, "No suitable DMA available.\n");
3994
goto out_pci_disable_device;
3997
pci_set_drvdata(pdev, priv);
3998
err = pci_request_regions(pdev, DRV_NAME);
4000
goto out_pci_disable_device;
4002
/***********************
4003
* 3. Read REV Register
4004
* ********************/
4005
priv->hw_base = pci_iomap(pdev, 0, 0);
4006
if (!priv->hw_base) {
4008
goto out_pci_release_regions;
4011
IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4012
(unsigned long long) pci_resource_len(pdev, 0));
4013
IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4015
/* We disable the RETRY_TIMEOUT register (0x41) to keep
4016
* PCI Tx retries from interfering with C3 CPU state */
4017
pci_write_config_byte(pdev, 0x41, 0x00);
4019
/* these spin locks will be used in apm_ops.init and EEPROM access
4020
* we should init now
4022
spin_lock_init(&priv->reg_lock);
4023
spin_lock_init(&priv->lock);
4026
* stop and reset the on-board processor just in case it is in a
4027
* strange state ... like being left stranded by a primary kernel
4028
* and this is now the kdump kernel trying to start up
4030
iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4032
/***********************
4034
* ********************/
4036
/* Read the EEPROM */
4037
err = iwl_legacy_eeprom_init(priv);
4039
IWL_ERR(priv, "Unable to init EEPROM\n");
4042
/* MAC Address location in EEPROM same for 3945/4965 */
4043
eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4044
IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address);
4045
SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address);
4047
/***********************
4048
* 5. Setup HW Constants
4049
* ********************/
4050
/* Device-specific setup */
4051
if (iwl3945_hw_set_hw_params(priv)) {
4052
IWL_ERR(priv, "failed to set hw settings\n");
4053
goto out_eeprom_free;
4056
/***********************
4058
* ********************/
4060
err = iwl3945_init_drv(priv);
4062
IWL_ERR(priv, "initializing driver failed\n");
4063
goto out_unset_hw_params;
4066
IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4069
/***********************
4071
* ********************/
4073
spin_lock_irqsave(&priv->lock, flags);
4074
iwl_legacy_disable_interrupts(priv);
4075
spin_unlock_irqrestore(&priv->lock, flags);
4077
pci_enable_msi(priv->pci_dev);
4079
err = request_irq(priv->pci_dev->irq, iwl_legacy_isr,
4080
IRQF_SHARED, DRV_NAME, priv);
4082
IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4083
goto out_disable_msi;
4086
err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4088
IWL_ERR(priv, "failed to create sysfs device attributes\n");
4089
goto out_release_irq;
4092
iwl_legacy_set_rxon_channel(priv,
4093
&priv->bands[IEEE80211_BAND_2GHZ].channels[5],
4094
&priv->contexts[IWL_RXON_CTX_BSS]);
4095
iwl3945_setup_deferred_work(priv);
4096
iwl3945_setup_rx_handlers(priv);
4097
iwl_legacy_power_initialize(priv);
4099
/*********************************
4100
* 8. Setup and Register mac80211
4101
* *******************************/
4103
iwl_legacy_enable_interrupts(priv);
4105
err = iwl3945_setup_mac(priv);
4107
goto out_remove_sysfs;
4109
err = iwl_legacy_dbgfs_register(priv, DRV_NAME);
4111
IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4113
/* Start monitoring the killswitch */
4114
queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4120
destroy_workqueue(priv->workqueue);
4121
priv->workqueue = NULL;
4122
sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4124
free_irq(priv->pci_dev->irq, priv);
4126
pci_disable_msi(priv->pci_dev);
4127
iwl_legacy_free_geos(priv);
4128
iwl_legacy_free_channel_map(priv);
4129
out_unset_hw_params:
4130
iwl3945_unset_hw_params(priv);
4132
iwl_legacy_eeprom_free(priv);
4134
pci_iounmap(pdev, priv->hw_base);
4135
out_pci_release_regions:
4136
pci_release_regions(pdev);
4137
out_pci_disable_device:
4138
pci_set_drvdata(pdev, NULL);
4139
pci_disable_device(pdev);
4140
out_ieee80211_free_hw:
4141
iwl_legacy_free_traffic_mem(priv);
4142
ieee80211_free_hw(priv->hw);
4147
static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4149
struct iwl_priv *priv = pci_get_drvdata(pdev);
4150
unsigned long flags;
4155
IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4157
iwl_legacy_dbgfs_unregister(priv);
4159
set_bit(STATUS_EXIT_PENDING, &priv->status);
4161
iwl_legacy_leds_exit(priv);
4163
if (priv->mac80211_registered) {
4164
ieee80211_unregister_hw(priv->hw);
4165
priv->mac80211_registered = 0;
4171
* Make sure device is reset to low power before unloading driver.
4172
* This may be redundant with iwl_down(), but there are paths to
4173
* run iwl_down() without calling apm_ops.stop(), and there are
4174
* paths to avoid running iwl_down() at all before leaving driver.
4175
* This (inexpensive) call *makes sure* device is reset.
4177
iwl_legacy_apm_stop(priv);
4179
/* make sure we flush any pending irq or
4180
* tasklet for the driver
4182
spin_lock_irqsave(&priv->lock, flags);
4183
iwl_legacy_disable_interrupts(priv);
4184
spin_unlock_irqrestore(&priv->lock, flags);
4186
iwl3945_synchronize_irq(priv);
4188
sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4190
cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4192
iwl3945_dealloc_ucode_pci(priv);
4195
iwl3945_rx_queue_free(priv, &priv->rxq);
4196
iwl3945_hw_txq_ctx_free(priv);
4198
iwl3945_unset_hw_params(priv);
4200
/*netif_stop_queue(dev); */
4201
flush_workqueue(priv->workqueue);
4203
/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4204
* priv->workqueue... so we can't take down the workqueue
4206
destroy_workqueue(priv->workqueue);
4207
priv->workqueue = NULL;
4208
iwl_legacy_free_traffic_mem(priv);
4210
free_irq(pdev->irq, priv);
4211
pci_disable_msi(pdev);
4213
pci_iounmap(pdev, priv->hw_base);
4214
pci_release_regions(pdev);
4215
pci_disable_device(pdev);
4216
pci_set_drvdata(pdev, NULL);
4218
iwl_legacy_free_channel_map(priv);
4219
iwl_legacy_free_geos(priv);
4220
kfree(priv->scan_cmd);
4221
if (priv->beacon_skb)
4222
dev_kfree_skb(priv->beacon_skb);
4224
ieee80211_free_hw(priv->hw);
4228
/*****************************************************************************
4230
* driver and module entry point
4232
*****************************************************************************/
4234
static struct pci_driver iwl3945_driver = {
4236
.id_table = iwl3945_hw_card_ids,
4237
.probe = iwl3945_pci_probe,
4238
.remove = __devexit_p(iwl3945_pci_remove),
4239
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29))
4240
.driver.pm = IWL_LEGACY_PM_OPS,
4241
#elif defined(CONFIG_PM)
4242
.suspend = iwl_legacy_pci_suspend_compat,
4243
.resume = iwl_legacy_pci_resume_compat,
4247
static int __init iwl3945_init(void)
4251
pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4252
pr_info(DRV_COPYRIGHT "\n");
4254
ret = iwl3945_rate_control_register();
4256
pr_err("Unable to register rate control algorithm: %d\n", ret);
4260
ret = pci_register_driver(&iwl3945_driver);
4262
pr_err("Unable to initialize PCI module\n");
4263
goto error_register;
4269
iwl3945_rate_control_unregister();
4273
static void __exit iwl3945_exit(void)
4275
pci_unregister_driver(&iwl3945_driver);
4276
iwl3945_rate_control_unregister();
4279
MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4281
module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4282
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4283
module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4284
MODULE_PARM_DESC(swcrypto,
4285
"using software crypto (default 1 [software])");
4286
module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4288
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)");
4289
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
4290
module_param_named(debug, iwlegacy_debug_level, uint, S_IRUGO | S_IWUSR);
4291
MODULE_PARM_DESC(debug, "debug output mask");
4293
module_param_named(fw_restart, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4294
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4296
module_exit(iwl3945_exit);
4297
module_init(iwl3945_init);
added
removed
updates/cw-3.0.0/drivers/net/wireless/iwlegacy/iwl3945-base.c
