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OpenCloudOS-Kernel/drivers/net/wireless/iwmc3200wifi/main.c

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/*
* Intel Wireless Multicomm 3200 WiFi driver
*
* Copyright (C) 2009 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Intel Corporation <ilw@linux.intel.com>
* Samuel Ortiz <samuel.ortiz@intel.com>
* Zhu Yi <yi.zhu@intel.com>
*
*/
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/ieee80211.h>
#include <linux/wireless.h>
#include "iwm.h"
#include "debug.h"
#include "bus.h"
#include "umac.h"
#include "commands.h"
#include "hal.h"
#include "fw.h"
#include "rx.h"
static struct iwm_conf def_iwm_conf = {
.sdio_ior_timeout = 5000,
.calib_map = BIT(CALIB_CFG_DC_IDX) |
BIT(CALIB_CFG_LO_IDX) |
BIT(CALIB_CFG_TX_IQ_IDX) |
BIT(CALIB_CFG_RX_IQ_IDX) |
BIT(SHILOH_PHY_CALIBRATE_BASE_BAND_CMD),
.expected_calib_map = BIT(PHY_CALIBRATE_DC_CMD) |
BIT(PHY_CALIBRATE_LO_CMD) |
BIT(PHY_CALIBRATE_TX_IQ_CMD) |
BIT(PHY_CALIBRATE_RX_IQ_CMD) |
BIT(SHILOH_PHY_CALIBRATE_BASE_BAND_CMD),
.ct_kill_entry = 110,
.ct_kill_exit = 110,
.reset_on_fatal_err = 1,
.auto_connect = 1,
.enable_qos = 1,
.mode = UMAC_MODE_BSS,
/* UMAC configuration */
.power_index = 0,
.frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD,
.rts_threshold = IEEE80211_MAX_RTS_THRESHOLD,
.cts_to_self = 0,
.assoc_timeout = 2,
.roam_timeout = 10,
.wireless_mode = WIRELESS_MODE_11A | WIRELESS_MODE_11G |
WIRELESS_MODE_11N,
/* IBSS */
.ibss_band = UMAC_BAND_2GHZ,
.ibss_channel = 1,
.mac_addr = {0x00, 0x02, 0xb3, 0x01, 0x02, 0x03},
};
static int modparam_reset;
module_param_named(reset, modparam_reset, bool, 0644);
MODULE_PARM_DESC(reset, "reset on firmware errors (default 0 [not reset])");
static int modparam_wimax_enable = 1;
module_param_named(wimax_enable, modparam_wimax_enable, bool, 0644);
MODULE_PARM_DESC(wimax_enable, "Enable wimax core (default 1 [wimax enabled])");
int iwm_mode_to_nl80211_iftype(int mode)
{
switch (mode) {
case UMAC_MODE_BSS:
return NL80211_IFTYPE_STATION;
case UMAC_MODE_IBSS:
return NL80211_IFTYPE_ADHOC;
default:
return NL80211_IFTYPE_UNSPECIFIED;
}
return 0;
}
static void iwm_statistics_request(struct work_struct *work)
{
struct iwm_priv *iwm =
container_of(work, struct iwm_priv, stats_request.work);
iwm_send_umac_stats_req(iwm, 0);
}
static void iwm_disconnect_work(struct work_struct *work)
{
struct iwm_priv *iwm =
container_of(work, struct iwm_priv, disconnect.work);
if (iwm->umac_profile_active)
iwm_invalidate_mlme_profile(iwm);
clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
iwm->umac_profile_active = 0;
memset(iwm->bssid, 0, ETH_ALEN);
iwm->channel = 0;
iwm_link_off(iwm);
wake_up_interruptible(&iwm->mlme_queue);
cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0, GFP_KERNEL);
}
static void iwm_ct_kill_work(struct work_struct *work)
{
struct iwm_priv *iwm =
container_of(work, struct iwm_priv, ct_kill_delay.work);
struct wiphy *wiphy = iwm_to_wiphy(iwm);
IWM_INFO(iwm, "CT kill delay timeout\n");
wiphy_rfkill_set_hw_state(wiphy, false);
}
static int __iwm_up(struct iwm_priv *iwm);
static int __iwm_down(struct iwm_priv *iwm);
static void iwm_reset_worker(struct work_struct *work)
{
struct iwm_priv *iwm;
struct iwm_umac_profile *profile = NULL;
int uninitialized_var(ret), retry = 0;
iwm = container_of(work, struct iwm_priv, reset_worker);
/*
* XXX: The iwm->mutex is introduced purely for this reset work,
* because the other users for iwm_up and iwm_down are only netdev
* ndo_open and ndo_stop which are already protected by rtnl.
* Please remove iwm->mutex together if iwm_reset_worker() is not
* required in the future.
*/
if (!mutex_trylock(&iwm->mutex)) {
IWM_WARN(iwm, "We are in the middle of interface bringing "
"UP/DOWN. Skip driver resetting.\n");
return;
}
if (iwm->umac_profile_active) {
profile = kmalloc(sizeof(struct iwm_umac_profile), GFP_KERNEL);
if (profile)
memcpy(profile, iwm->umac_profile, sizeof(*profile));
else
IWM_ERR(iwm, "Couldn't alloc memory for profile\n");
}
__iwm_down(iwm);
while (retry++ < 3) {
ret = __iwm_up(iwm);
if (!ret)
break;
schedule_timeout_uninterruptible(10 * HZ);
}
if (ret) {
IWM_WARN(iwm, "iwm_up() failed: %d\n", ret);
kfree(profile);
goto out;
}
if (profile) {
IWM_DBG_MLME(iwm, DBG, "Resend UMAC profile\n");
memcpy(iwm->umac_profile, profile, sizeof(*profile));
iwm_send_mlme_profile(iwm);
kfree(profile);
} else
clear_bit(IWM_STATUS_RESETTING, &iwm->status);
out:
mutex_unlock(&iwm->mutex);
}
static void iwm_auth_retry_worker(struct work_struct *work)
{
struct iwm_priv *iwm;
int i, ret;
iwm = container_of(work, struct iwm_priv, auth_retry_worker);
if (iwm->umac_profile_active) {
ret = iwm_invalidate_mlme_profile(iwm);
if (ret < 0)
return;
}
iwm->umac_profile->sec.auth_type = UMAC_AUTH_TYPE_LEGACY_PSK;
ret = iwm_send_mlme_profile(iwm);
if (ret < 0)
return;
for (i = 0; i < IWM_NUM_KEYS; i++)
if (iwm->keys[i].key_len)
iwm_set_key(iwm, 0, &iwm->keys[i]);
iwm_set_tx_key(iwm, iwm->default_key);
}
static void iwm_watchdog(unsigned long data)
{
struct iwm_priv *iwm = (struct iwm_priv *)data;
IWM_WARN(iwm, "Watchdog expired: UMAC stalls!\n");
if (modparam_reset)
iwm_resetting(iwm);
}
int iwm_priv_init(struct iwm_priv *iwm)
{
int i, j;
char name[32];
iwm->status = 0;
INIT_LIST_HEAD(&iwm->pending_notif);
init_waitqueue_head(&iwm->notif_queue);
init_waitqueue_head(&iwm->nonwifi_queue);
init_waitqueue_head(&iwm->wifi_ntfy_queue);
init_waitqueue_head(&iwm->mlme_queue);
memcpy(&iwm->conf, &def_iwm_conf, sizeof(struct iwm_conf));
spin_lock_init(&iwm->tx_credit.lock);
INIT_LIST_HEAD(&iwm->wifi_pending_cmd);
INIT_LIST_HEAD(&iwm->nonwifi_pending_cmd);
iwm->wifi_seq_num = UMAC_WIFI_SEQ_NUM_BASE;
iwm->nonwifi_seq_num = UMAC_NONWIFI_SEQ_NUM_BASE;
spin_lock_init(&iwm->cmd_lock);
iwm->scan_id = 1;
INIT_DELAYED_WORK(&iwm->stats_request, iwm_statistics_request);
INIT_DELAYED_WORK(&iwm->disconnect, iwm_disconnect_work);
INIT_DELAYED_WORK(&iwm->ct_kill_delay, iwm_ct_kill_work);
INIT_WORK(&iwm->reset_worker, iwm_reset_worker);
INIT_WORK(&iwm->auth_retry_worker, iwm_auth_retry_worker);
INIT_LIST_HEAD(&iwm->bss_list);
skb_queue_head_init(&iwm->rx_list);
INIT_LIST_HEAD(&iwm->rx_tickets);
spin_lock_init(&iwm->ticket_lock);
for (i = 0; i < IWM_RX_ID_HASH; i++) {
INIT_LIST_HEAD(&iwm->rx_packets[i]);
spin_lock_init(&iwm->packet_lock[i]);
}
INIT_WORK(&iwm->rx_worker, iwm_rx_worker);
iwm->rx_wq = create_singlethread_workqueue(KBUILD_MODNAME "_rx");
if (!iwm->rx_wq)
return -EAGAIN;
for (i = 0; i < IWM_TX_QUEUES; i++) {
INIT_WORK(&iwm->txq[i].worker, iwm_tx_worker);
snprintf(name, 32, KBUILD_MODNAME "_tx_%d", i);
iwm->txq[i].id = i;
iwm->txq[i].wq = create_singlethread_workqueue(name);
if (!iwm->txq[i].wq)
return -EAGAIN;
skb_queue_head_init(&iwm->txq[i].queue);
skb_queue_head_init(&iwm->txq[i].stopped_queue);
spin_lock_init(&iwm->txq[i].lock);
}
for (i = 0; i < IWM_NUM_KEYS; i++)
memset(&iwm->keys[i], 0, sizeof(struct iwm_key));
iwm->default_key = -1;
for (i = 0; i < IWM_STA_TABLE_NUM; i++)
for (j = 0; j < IWM_UMAC_TID_NR; j++) {
mutex_init(&iwm->sta_table[i].tid_info[j].mutex);
iwm->sta_table[i].tid_info[j].stopped = false;
}
init_timer(&iwm->watchdog);
iwm->watchdog.function = iwm_watchdog;
iwm->watchdog.data = (unsigned long)iwm;
mutex_init(&iwm->mutex);
iwm->last_fw_err = kzalloc(sizeof(struct iwm_fw_error_hdr),
GFP_KERNEL);
if (iwm->last_fw_err == NULL)
return -ENOMEM;
return 0;
}
void iwm_priv_deinit(struct iwm_priv *iwm)
{
int i;
for (i = 0; i < IWM_TX_QUEUES; i++)
destroy_workqueue(iwm->txq[i].wq);
destroy_workqueue(iwm->rx_wq);
kfree(iwm->last_fw_err);
}
/*
* We reset all the structures, and we reset the UMAC.
* After calling this routine, you're expected to reload
* the firmware.
*/
void iwm_reset(struct iwm_priv *iwm)
{
struct iwm_notif *notif, *next;
if (test_bit(IWM_STATUS_READY, &iwm->status))
iwm_target_reset(iwm);
if (test_bit(IWM_STATUS_RESETTING, &iwm->status)) {
iwm->status = 0;
set_bit(IWM_STATUS_RESETTING, &iwm->status);
} else
iwm->status = 0;
iwm->scan_id = 1;
list_for_each_entry_safe(notif, next, &iwm->pending_notif, pending) {
list_del(&notif->pending);
kfree(notif->buf);
kfree(notif);
}
iwm_cmd_flush(iwm);
flush_workqueue(iwm->rx_wq);
iwm_link_off(iwm);
}
void iwm_resetting(struct iwm_priv *iwm)
{
set_bit(IWM_STATUS_RESETTING, &iwm->status);
schedule_work(&iwm->reset_worker);
}
/*
* Notification code:
*
* We're faced with the following issue: Any host command can
* have an answer or not, and if there's an answer to expect,
* it can be treated synchronously or asynchronously.
* To work around the synchronous answer case, we implemented
* our notification mechanism.
* When a code path needs to wait for a command response
* synchronously, it calls notif_handle(), which waits for the
* right notification to show up, and then process it. Before
* starting to wait, it registered as a waiter for this specific
* answer (by toggling a bit in on of the handler_map), so that
* the rx code knows that it needs to send a notification to the
* waiting processes. It does so by calling iwm_notif_send(),
* which adds the notification to the pending notifications list,
* and then wakes the waiting processes up.
*/
int iwm_notif_send(struct iwm_priv *iwm, struct iwm_wifi_cmd *cmd,
u8 cmd_id, u8 source, u8 *buf, unsigned long buf_size)
{
struct iwm_notif *notif;
notif = kzalloc(sizeof(struct iwm_notif), GFP_KERNEL);
if (!notif) {
IWM_ERR(iwm, "Couldn't alloc memory for notification\n");
return -ENOMEM;
}
INIT_LIST_HEAD(&notif->pending);
notif->cmd = cmd;
notif->cmd_id = cmd_id;
notif->src = source;
notif->buf = kzalloc(buf_size, GFP_KERNEL);
if (!notif->buf) {
IWM_ERR(iwm, "Couldn't alloc notification buffer\n");
kfree(notif);
return -ENOMEM;
}
notif->buf_size = buf_size;
memcpy(notif->buf, buf, buf_size);
list_add_tail(&notif->pending, &iwm->pending_notif);
wake_up_interruptible(&iwm->notif_queue);
return 0;
}
static struct iwm_notif *iwm_notif_find(struct iwm_priv *iwm, u32 cmd,
u8 source)
{
struct iwm_notif *notif;
list_for_each_entry(notif, &iwm->pending_notif, pending) {
if ((notif->cmd_id == cmd) && (notif->src == source)) {
list_del(&notif->pending);
return notif;
}
}
return NULL;
}
static struct iwm_notif *iwm_notif_wait(struct iwm_priv *iwm, u32 cmd,
u8 source, long timeout)
{
int ret;
struct iwm_notif *notif;
unsigned long *map = NULL;
switch (source) {
case IWM_SRC_LMAC:
map = &iwm->lmac_handler_map[0];
break;
case IWM_SRC_UMAC:
map = &iwm->umac_handler_map[0];
break;
case IWM_SRC_UDMA:
map = &iwm->udma_handler_map[0];
break;
}
set_bit(cmd, map);
ret = wait_event_interruptible_timeout(iwm->notif_queue,
((notif = iwm_notif_find(iwm, cmd, source)) != NULL),
timeout);
clear_bit(cmd, map);
if (!ret)
return NULL;
return notif;
}
int iwm_notif_handle(struct iwm_priv *iwm, u32 cmd, u8 source, long timeout)
{
int ret;
struct iwm_notif *notif;
notif = iwm_notif_wait(iwm, cmd, source, timeout);
if (!notif)
return -ETIME;
ret = iwm_rx_handle_resp(iwm, notif->buf, notif->buf_size, notif->cmd);
kfree(notif->buf);
kfree(notif);
return ret;
}
static int iwm_config_boot_params(struct iwm_priv *iwm)
{
struct iwm_udma_nonwifi_cmd target_cmd;
int ret;
/* check Wimax is off and config debug monitor */
if (!modparam_wimax_enable) {
u32 data1 = 0x1f;
u32 addr1 = 0x606BE258;
u32 data2_set = 0x0;
u32 data2_clr = 0x1;
u32 addr2 = 0x606BE100;
u32 data3 = 0x1;
u32 addr3 = 0x606BEC00;
target_cmd.resp = 0;
target_cmd.handle_by_hw = 0;
target_cmd.eop = 1;
target_cmd.opcode = UMAC_HDI_OUT_OPCODE_WRITE;
target_cmd.addr = cpu_to_le32(addr1);
target_cmd.op1_sz = cpu_to_le32(sizeof(u32));
target_cmd.op2 = 0;
ret = iwm_hal_send_target_cmd(iwm, &target_cmd, &data1);
if (ret < 0) {
IWM_ERR(iwm, "iwm_hal_send_target_cmd failed\n");
return ret;
}
target_cmd.opcode = UMAC_HDI_OUT_OPCODE_READ_MODIFY_WRITE;
target_cmd.addr = cpu_to_le32(addr2);
target_cmd.op1_sz = cpu_to_le32(data2_set);
target_cmd.op2 = cpu_to_le32(data2_clr);
ret = iwm_hal_send_target_cmd(iwm, &target_cmd, &data1);
if (ret < 0) {
IWM_ERR(iwm, "iwm_hal_send_target_cmd failed\n");
return ret;
}
target_cmd.opcode = UMAC_HDI_OUT_OPCODE_WRITE;
target_cmd.addr = cpu_to_le32(addr3);
target_cmd.op1_sz = cpu_to_le32(sizeof(u32));
target_cmd.op2 = 0;
ret = iwm_hal_send_target_cmd(iwm, &target_cmd, &data3);
if (ret < 0) {
IWM_ERR(iwm, "iwm_hal_send_target_cmd failed\n");
return ret;
}
}
return 0;
}
void iwm_init_default_profile(struct iwm_priv *iwm,
struct iwm_umac_profile *profile)
{
memset(profile, 0, sizeof(struct iwm_umac_profile));
profile->sec.auth_type = UMAC_AUTH_TYPE_OPEN;
profile->sec.flags = UMAC_SEC_FLG_LEGACY_PROFILE;
profile->sec.ucast_cipher = UMAC_CIPHER_TYPE_NONE;
profile->sec.mcast_cipher = UMAC_CIPHER_TYPE_NONE;
if (iwm->conf.enable_qos)
profile->flags |= cpu_to_le16(UMAC_PROFILE_QOS_ALLOWED);
profile->wireless_mode = iwm->conf.wireless_mode;
profile->mode = cpu_to_le32(iwm->conf.mode);
profile->ibss.atim = 0;
profile->ibss.beacon_interval = 100;
profile->ibss.join_only = 0;
profile->ibss.band = iwm->conf.ibss_band;
profile->ibss.channel = iwm->conf.ibss_channel;
}
void iwm_link_on(struct iwm_priv *iwm)
{
netif_carrier_on(iwm_to_ndev(iwm));
netif_tx_wake_all_queues(iwm_to_ndev(iwm));
iwm_send_umac_stats_req(iwm, 0);
}
void iwm_link_off(struct iwm_priv *iwm)
{
struct iw_statistics *wstats = &iwm->wstats;
int i;
netif_tx_stop_all_queues(iwm_to_ndev(iwm));
netif_carrier_off(iwm_to_ndev(iwm));
for (i = 0; i < IWM_TX_QUEUES; i++) {
skb_queue_purge(&iwm->txq[i].queue);
skb_queue_purge(&iwm->txq[i].stopped_queue);
iwm->txq[i].concat_count = 0;
iwm->txq[i].concat_ptr = iwm->txq[i].concat_buf;
flush_workqueue(iwm->txq[i].wq);
}
iwm_rx_free(iwm);
cancel_delayed_work_sync(&iwm->stats_request);
memset(wstats, 0, sizeof(struct iw_statistics));
wstats->qual.updated = IW_QUAL_ALL_INVALID;
kfree(iwm->req_ie);
iwm->req_ie = NULL;
iwm->req_ie_len = 0;
kfree(iwm->resp_ie);
iwm->resp_ie = NULL;
iwm->resp_ie_len = 0;
del_timer_sync(&iwm->watchdog);
}
static void iwm_bss_list_clean(struct iwm_priv *iwm)
{
struct iwm_bss_info *bss, *next;
list_for_each_entry_safe(bss, next, &iwm->bss_list, node) {
list_del(&bss->node);
kfree(bss->bss);
kfree(bss);
}
}
static int iwm_channels_init(struct iwm_priv *iwm)
{
int ret;
ret = iwm_send_umac_channel_list(iwm);
if (ret) {
IWM_ERR(iwm, "Send channel list failed\n");
return ret;
}
ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST,
IWM_SRC_UMAC, WAIT_NOTIF_TIMEOUT);
if (ret) {
IWM_ERR(iwm, "Didn't get a channel list notification\n");
return ret;
}
return 0;
}
static int __iwm_up(struct iwm_priv *iwm)
{
int ret;
struct iwm_notif *notif_reboot, *notif_ack = NULL;
struct wiphy *wiphy = iwm_to_wiphy(iwm);
u32 wireless_mode;
ret = iwm_bus_enable(iwm);
if (ret) {
IWM_ERR(iwm, "Couldn't enable function\n");
return ret;
}
iwm_rx_setup_handlers(iwm);
/* Wait for initial BARKER_REBOOT from hardware */
notif_reboot = iwm_notif_wait(iwm, IWM_BARKER_REBOOT_NOTIFICATION,
IWM_SRC_UDMA, 2 * HZ);
if (!notif_reboot) {
IWM_ERR(iwm, "Wait for REBOOT_BARKER timeout\n");
goto err_disable;
}
/* We send the barker back */
ret = iwm_bus_send_chunk(iwm, notif_reboot->buf, 16);
if (ret) {
IWM_ERR(iwm, "REBOOT barker response failed\n");
kfree(notif_reboot);
goto err_disable;
}
kfree(notif_reboot->buf);
kfree(notif_reboot);
/* Wait for ACK_BARKER from hardware */
notif_ack = iwm_notif_wait(iwm, IWM_ACK_BARKER_NOTIFICATION,
IWM_SRC_UDMA, 2 * HZ);
if (!notif_ack) {
IWM_ERR(iwm, "Wait for ACK_BARKER timeout\n");
goto err_disable;
}
kfree(notif_ack->buf);
kfree(notif_ack);
/* We start to config static boot parameters */
ret = iwm_config_boot_params(iwm);
if (ret) {
IWM_ERR(iwm, "Config boot parameters failed\n");
goto err_disable;
}
ret = iwm_read_mac(iwm, iwm_to_ndev(iwm)->dev_addr);
if (ret) {
IWM_ERR(iwm, "MAC reading failed\n");
goto err_disable;
}
memcpy(iwm_to_ndev(iwm)->perm_addr, iwm_to_ndev(iwm)->dev_addr,
ETH_ALEN);
/* We can load the FWs */
ret = iwm_load_fw(iwm);
if (ret) {
IWM_ERR(iwm, "FW loading failed\n");
goto err_disable;
}
ret = iwm_eeprom_fat_channels(iwm);
if (ret) {
IWM_ERR(iwm, "Couldnt read HT channels EEPROM entries\n");
goto err_fw;
}
/*
* Read our SKU capabilities.
* If it's valid, we AND the configured wireless mode with the
* device EEPROM value as the current profile wireless mode.
*/
wireless_mode = iwm_eeprom_wireless_mode(iwm);
if (wireless_mode) {
iwm->conf.wireless_mode &= wireless_mode;
if (iwm->umac_profile)
iwm->umac_profile->wireless_mode =
iwm->conf.wireless_mode;
} else
IWM_ERR(iwm, "Wrong SKU capabilities: 0x%x\n",
*((u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_SKU_CAP)));
snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "L%s_U%s",
iwm->lmac_version, iwm->umac_version);
/* We configure the UMAC and enable the wifi module */
ret = iwm_send_umac_config(iwm,
cpu_to_le32(UMAC_RST_CTRL_FLG_WIFI_CORE_EN) |
cpu_to_le32(UMAC_RST_CTRL_FLG_WIFI_LINK_EN) |
cpu_to_le32(UMAC_RST_CTRL_FLG_WIFI_MLME_EN));
if (ret) {
IWM_ERR(iwm, "UMAC config failed\n");
goto err_fw;
}
ret = iwm_notif_handle(iwm, UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS,
IWM_SRC_UMAC, WAIT_NOTIF_TIMEOUT);
if (ret) {
IWM_ERR(iwm, "Didn't get a wifi core status notification\n");
goto err_fw;
}
if (iwm->core_enabled != (UMAC_NTFY_WIFI_CORE_STATUS_LINK_EN |
UMAC_NTFY_WIFI_CORE_STATUS_MLME_EN)) {
IWM_DBG_BOOT(iwm, DBG, "Not all cores enabled:0x%x\n",
iwm->core_enabled);
ret = iwm_notif_handle(iwm, UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS,
IWM_SRC_UMAC, WAIT_NOTIF_TIMEOUT);
if (ret) {
IWM_ERR(iwm, "Didn't get a core status notification\n");
goto err_fw;
}
if (iwm->core_enabled != (UMAC_NTFY_WIFI_CORE_STATUS_LINK_EN |
UMAC_NTFY_WIFI_CORE_STATUS_MLME_EN)) {
IWM_ERR(iwm, "Not all cores enabled: 0x%x\n",
iwm->core_enabled);
goto err_fw;
} else {
IWM_INFO(iwm, "All cores enabled\n");
}
}
ret = iwm_channels_init(iwm);
if (ret < 0) {
IWM_ERR(iwm, "Couldn't init channels\n");
goto err_fw;
}
/* Set the READY bit to indicate interface is brought up successfully */
set_bit(IWM_STATUS_READY, &iwm->status);
return 0;
err_fw:
iwm_eeprom_exit(iwm);
err_disable:
ret = iwm_bus_disable(iwm);
if (ret < 0)
IWM_ERR(iwm, "Couldn't disable function\n");
return -EIO;
}
int iwm_up(struct iwm_priv *iwm)
{
int ret;
mutex_lock(&iwm->mutex);
ret = __iwm_up(iwm);
mutex_unlock(&iwm->mutex);
return ret;
}
static int __iwm_down(struct iwm_priv *iwm)
{
int ret;
/* The interface is already down */
if (!test_bit(IWM_STATUS_READY, &iwm->status))
return 0;
if (iwm->scan_request) {
cfg80211_scan_done(iwm->scan_request, true);
iwm->scan_request = NULL;
}
clear_bit(IWM_STATUS_READY, &iwm->status);
iwm_eeprom_exit(iwm);
iwm_bss_list_clean(iwm);
iwm_init_default_profile(iwm, iwm->umac_profile);
iwm->umac_profile_active = false;
iwm->default_key = -1;
iwm->core_enabled = 0;
ret = iwm_bus_disable(iwm);
if (ret < 0) {
IWM_ERR(iwm, "Couldn't disable function\n");
return ret;
}
return 0;
}
int iwm_down(struct iwm_priv *iwm)
{
int ret;
mutex_lock(&iwm->mutex);
ret = __iwm_down(iwm);
mutex_unlock(&iwm->mutex);
return ret;
}
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