blob: 2fcdf70a3a77e4ee1dd603b0e5979d553dc4d9d2 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#include "main.h"
#include "fw.h"
#include "wow.h"
#include "reg.h"
#include "debug.h"
#include "mac.h"
#include "ps.h"
static void rtw_wow_show_wakeup_reason(struct rtw_dev *rtwdev)
{
u8 reason;
reason = rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON);
if (reason == RTW_WOW_RSN_RX_DEAUTH)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx deauth\n");
else if (reason == RTW_WOW_RSN_DISCONNECT)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: AP is off\n");
else if (reason == RTW_WOW_RSN_RX_MAGIC_PKT)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx magic packet\n");
else if (reason == RTW_WOW_RSN_RX_GTK_REKEY)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx gtk rekey\n");
else if (reason == RTW_WOW_RSN_RX_PTK_REKEY)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx ptk rekey\n");
else if (reason == RTW_WOW_RSN_RX_PATTERN_MATCH)
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx pattern match packet\n");
else if (reason == RTW_WOW_RSN_RX_NLO)
rtw_dbg(rtwdev, RTW_DBG_WOW, "Rx NLO\n");
else
rtw_warn(rtwdev, "Unknown wakeup reason %x\n", reason);
}
static void rtw_wow_pattern_write_cam(struct rtw_dev *rtwdev, u8 addr,
u32 wdata)
{
rtw_write32(rtwdev, REG_WKFMCAM_RWD, wdata);
rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
BIT_WKFCAM_WE | BIT_WKFCAM_ADDR_V2(addr));
if (!check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0))
rtw_err(rtwdev, "failed to write pattern cam\n");
}
static void rtw_wow_pattern_write_cam_ent(struct rtw_dev *rtwdev, u8 id,
struct rtw_wow_pattern *rtw_pattern)
{
int i;
u8 addr;
u32 wdata;
for (i = 0; i < RTW_MAX_PATTERN_MASK_SIZE / 4; i++) {
addr = (id << 3) + i;
wdata = rtw_pattern->mask[i * 4];
wdata |= rtw_pattern->mask[i * 4 + 1] << 8;
wdata |= rtw_pattern->mask[i * 4 + 2] << 16;
wdata |= rtw_pattern->mask[i * 4 + 3] << 24;
rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
}
wdata = rtw_pattern->crc;
addr = (id << 3) + RTW_MAX_PATTERN_MASK_SIZE / 4;
switch (rtw_pattern->type) {
case RTW_PATTERN_BROADCAST:
wdata |= BIT_WKFMCAM_BC | BIT_WKFMCAM_VALID;
break;
case RTW_PATTERN_MULTICAST:
wdata |= BIT_WKFMCAM_MC | BIT_WKFMCAM_VALID;
break;
case RTW_PATTERN_UNICAST:
wdata |= BIT_WKFMCAM_UC | BIT_WKFMCAM_VALID;
break;
default:
break;
}
rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
}
/* RTK internal CRC16 for Pattern Cam */
static u16 __rtw_cal_crc16(u8 data, u16 crc)
{
u8 shift_in, data_bit;
u8 crc_bit4, crc_bit11, crc_bit15;
u16 crc_result;
int index;
for (index = 0; index < 8; index++) {
crc_bit15 = ((crc & BIT(15)) ? 1 : 0);
data_bit = (data & (BIT(0) << index) ? 1 : 0);
shift_in = crc_bit15 ^ data_bit;
crc_result = crc << 1;
if (shift_in == 0)
crc_result &= (~BIT(0));
else
crc_result |= BIT(0);
crc_bit11 = ((crc & BIT(11)) ? 1 : 0) ^ shift_in;
if (crc_bit11 == 0)
crc_result &= (~BIT(12));
else
crc_result |= BIT(12);
crc_bit4 = ((crc & BIT(4)) ? 1 : 0) ^ shift_in;
if (crc_bit4 == 0)
crc_result &= (~BIT(5));
else
crc_result |= BIT(5);
crc = crc_result;
}
return crc;
}
static u16 rtw_calc_crc(u8 *pdata, int length)
{
u16 crc = 0xffff;
int i;
for (i = 0; i < length; i++)
crc = __rtw_cal_crc16(pdata[i], crc);
/* get 1' complement */
return ~crc;
}
static void rtw_wow_pattern_generate(struct rtw_dev *rtwdev,
struct rtw_vif *rtwvif,
const struct cfg80211_pkt_pattern *pkt_pattern,
struct rtw_wow_pattern *rtw_pattern)
{
const u8 *mask;
const u8 *pattern;
u8 mask_hw[RTW_MAX_PATTERN_MASK_SIZE] = {0};
u8 content[RTW_MAX_PATTERN_SIZE] = {0};
u8 mac_addr[ETH_ALEN] = {0};
u8 mask_len;
u16 count;
int len;
int i;
pattern = pkt_pattern->pattern;
len = pkt_pattern->pattern_len;
mask = pkt_pattern->mask;
ether_addr_copy(mac_addr, rtwvif->mac_addr);
memset(rtw_pattern, 0, sizeof(*rtw_pattern));
mask_len = DIV_ROUND_UP(len, 8);
if (is_broadcast_ether_addr(pattern))
rtw_pattern->type = RTW_PATTERN_BROADCAST;
else if (is_multicast_ether_addr(pattern))
rtw_pattern->type = RTW_PATTERN_MULTICAST;
else if (ether_addr_equal(pattern, mac_addr))
rtw_pattern->type = RTW_PATTERN_UNICAST;
else
rtw_pattern->type = RTW_PATTERN_INVALID;
/* translate mask from os to mask for hw
* pattern from OS uses 'ethenet frame', like this:
* | 6 | 6 | 2 | 20 | Variable | 4 |
* |--------+--------+------+-----------+------------+-----|
* | 802.3 Mac Header | IP Header | TCP Packet | FCS |
* | DA | SA | Type |
*
* BUT, packet catched by our HW is in '802.11 frame', begin from LLC
* | 24 or 30 | 6 | 2 | 20 | Variable | 4 |
* |-------------------+--------+------+-----------+------------+-----|
* | 802.11 MAC Header | LLC | IP Header | TCP Packet | FCS |
* | Others | Tpye |
*
* Therefore, we need translate mask_from_OS to mask_to_hw.
* We should left-shift mask by 6 bits, then set the new bit[0~5] = 0,
* because new mask[0~5] means 'SA', but our HW packet begins from LLC,
* bit[0~5] corresponds to first 6 Bytes in LLC, they just don't match.
*/
/* Shift 6 bits */
for (i = 0; i < mask_len - 1; i++) {
mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
mask_hw[i] |= u8_get_bits(mask[i + 1], GENMASK(5, 0)) << 2;
}
mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
/* Set bit 0-5 to zero */
mask_hw[0] &= (~GENMASK(5, 0));
memcpy(rtw_pattern->mask, mask_hw, RTW_MAX_PATTERN_MASK_SIZE);
/* To get the wake up pattern from the mask.
* We do not count first 12 bits which means
* DA[6] and SA[6] in the pattern to match HW design.
*/
count = 0;
for (i = 12; i < len; i++) {
if ((mask[i / 8] >> (i % 8)) & 0x01) {
content[count] = pattern[i];
count++;
}
}
rtw_pattern->crc = rtw_calc_crc(content, count);
}
static void rtw_wow_pattern_clear_cam(struct rtw_dev *rtwdev)
{
bool ret;
rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
BIT_WKFCAM_CLR_V1);
ret = check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0);
if (!ret)
rtw_err(rtwdev, "failed to clean pattern cam\n");
}
static void rtw_wow_pattern_write(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
struct rtw_wow_pattern *rtw_pattern = rtw_wow->patterns;
int i = 0;
for (i = 0; i < rtw_wow->pattern_cnt; i++)
rtw_wow_pattern_write_cam_ent(rtwdev, i, rtw_pattern + i);
}
static void rtw_wow_pattern_clear(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
rtw_wow_pattern_clear_cam(rtwdev);
rtw_wow->pattern_cnt = 0;
memset(rtw_wow->patterns, 0, sizeof(rtw_wow->patterns));
}
static void rtw_wow_bb_stop(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
/* wait 100ms for firmware to finish TX */
msleep(100);
if (!rtw_read32_mask(rtwdev, REG_BCNQ_INFO, BIT_MGQ_CPU_EMPTY))
rtw_warn(rtwdev, "Wrong status of MGQ_CPU empty!\n");
rtw_wow->txpause = rtw_read8(rtwdev, REG_TXPAUSE);
rtw_write8(rtwdev, REG_TXPAUSE, 0xff);
rtw_write8_clr(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
}
static void rtw_wow_bb_start(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
rtw_write8_set(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
rtw_write8(rtwdev, REG_TXPAUSE, rtw_wow->txpause);
}
static void rtw_wow_rx_dma_stop(struct rtw_dev *rtwdev)
{
/* wait 100ms for HW to finish rx dma */
msleep(100);
rtw_write32_set(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
if (!check_hw_ready(rtwdev, REG_RXPKT_NUM, BIT_RXDMA_IDLE, 1))
rtw_err(rtwdev, "failed to stop rx dma\n");
}
static void rtw_wow_rx_dma_start(struct rtw_dev *rtwdev)
{
rtw_write32_clr(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
}
static int rtw_wow_check_fw_status(struct rtw_dev *rtwdev, bool wow_enable)
{
/* wait 100ms for wow firmware to finish work */
msleep(100);
if (wow_enable) {
if (rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON))
goto wow_fail;
} else {
if (rtw_read32_mask(rtwdev, REG_FE1IMR, BIT_FS_RXDONE) ||
rtw_read32_mask(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE))
goto wow_fail;
}
return 0;
wow_fail:
rtw_err(rtwdev, "failed to check wow status %s\n",
wow_enable ? "enabled" : "disabled");
return -EBUSY;
}
static void rtw_wow_fw_security_type_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *data)
{
struct rtw_fw_key_type_iter_data *iter_data = data;
struct rtw_dev *rtwdev = hw->priv;
u8 hw_key_type;
if (vif != rtwdev->wow.wow_vif)
return;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
hw_key_type = RTW_CAM_WEP40;
break;
case WLAN_CIPHER_SUITE_WEP104:
hw_key_type = RTW_CAM_WEP104;
break;
case WLAN_CIPHER_SUITE_TKIP:
hw_key_type = RTW_CAM_TKIP;
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
break;
case WLAN_CIPHER_SUITE_CCMP:
hw_key_type = RTW_CAM_AES;
key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
break;
default:
rtw_err(rtwdev, "Unsupported key type for wowlan mode\n");
hw_key_type = 0;
break;
}
if (sta)
iter_data->pairwise_key_type = hw_key_type;
else
iter_data->group_key_type = hw_key_type;
}
static void rtw_wow_fw_security_type(struct rtw_dev *rtwdev)
{
struct rtw_fw_key_type_iter_data data = {};
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
data.rtwdev = rtwdev;
rtw_iterate_keys(rtwdev, wow_vif,
rtw_wow_fw_security_type_iter, &data);
rtw_fw_set_aoac_global_info_cmd(rtwdev, data.pairwise_key_type,
data.group_key_type);
}
static int rtw_wow_fw_start(struct rtw_dev *rtwdev)
{
if (rtw_wow_mgd_linked(rtwdev)) {
rtw_send_rsvd_page_h2c(rtwdev);
rtw_wow_pattern_write(rtwdev);
rtw_wow_fw_security_type(rtwdev);
rtw_fw_set_disconnect_decision_cmd(rtwdev, true);
rtw_fw_set_keep_alive_cmd(rtwdev, true);
} else if (rtw_wow_no_link(rtwdev)) {
rtw_fw_set_nlo_info(rtwdev, true);
rtw_fw_update_pkt_probe_req(rtwdev, NULL);
rtw_fw_channel_switch(rtwdev, true);
}
rtw_fw_set_wowlan_ctrl_cmd(rtwdev, true);
rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, true);
return rtw_wow_check_fw_status(rtwdev, true);
}
static int rtw_wow_fw_stop(struct rtw_dev *rtwdev)
{
if (rtw_wow_mgd_linked(rtwdev)) {
rtw_fw_set_disconnect_decision_cmd(rtwdev, false);
rtw_fw_set_keep_alive_cmd(rtwdev, false);
rtw_wow_pattern_clear(rtwdev);
} else if (rtw_wow_no_link(rtwdev)) {
rtw_fw_channel_switch(rtwdev, false);
rtw_fw_set_nlo_info(rtwdev, false);
}
rtw_fw_set_wowlan_ctrl_cmd(rtwdev, false);
rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, false);
return rtw_wow_check_fw_status(rtwdev, false);
}
static void rtw_wow_avoid_reset_mac(struct rtw_dev *rtwdev)
{
/* When resuming from wowlan mode, some hosts issue signal
* (PCIE: PREST, USB: SE0RST) to device, and lead to reset
* mac core. If it happens, the connection to AP will be lost.
* Setting REG_RSV_CTRL Register can avoid this process.
*/
switch (rtw_hci_type(rtwdev)) {
case RTW_HCI_TYPE_PCIE:
case RTW_HCI_TYPE_USB:
rtw_write8(rtwdev, REG_RSV_CTRL, BIT_WLOCK_1C_B6);
rtw_write8(rtwdev, REG_RSV_CTRL,
BIT_WLOCK_1C_B6 | BIT_R_DIS_PRST);
break;
default:
rtw_warn(rtwdev, "Unsupported hci type to disable reset MAC\n");
break;
}
}
static void rtw_wow_fw_media_status_iter(void *data, struct ieee80211_sta *sta)
{
struct rtw_sta_info *si = (struct rtw_sta_info *)sta->drv_priv;
struct rtw_fw_media_status_iter_data *iter_data = data;
struct rtw_dev *rtwdev = iter_data->rtwdev;
rtw_fw_media_status_report(rtwdev, si->mac_id, iter_data->connect);
}
static void rtw_wow_fw_media_status(struct rtw_dev *rtwdev, bool connect)
{
struct rtw_fw_media_status_iter_data data;
data.rtwdev = rtwdev;
data.connect = connect;
rtw_iterate_stas_atomic(rtwdev, rtw_wow_fw_media_status_iter, &data);
}
static void rtw_wow_config_pno_rsvd_page(struct rtw_dev *rtwdev,
struct rtw_vif *rtwvif)
{
rtw_add_rsvd_page_pno(rtwdev, rtwvif);
}
static void rtw_wow_config_linked_rsvd_page(struct rtw_dev *rtwdev,
struct rtw_vif *rtwvif)
{
rtw_add_rsvd_page_sta(rtwdev, rtwvif);
}
static void rtw_wow_config_rsvd_page(struct rtw_dev *rtwdev,
struct rtw_vif *rtwvif)
{
rtw_remove_rsvd_page(rtwdev, rtwvif);
if (rtw_wow_mgd_linked(rtwdev)) {
rtw_wow_config_linked_rsvd_page(rtwdev, rtwvif);
} else if (test_bit(RTW_FLAG_WOWLAN, rtwdev->flags) &&
rtw_wow_no_link(rtwdev)) {
rtw_wow_config_pno_rsvd_page(rtwdev, rtwvif);
}
}
static int rtw_wow_dl_fw_rsvd_page(struct rtw_dev *rtwdev)
{
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
struct rtw_vif *rtwvif = (struct rtw_vif *)wow_vif->drv_priv;
rtw_wow_config_rsvd_page(rtwdev, rtwvif);
return rtw_fw_download_rsvd_page(rtwdev);
}
static int rtw_wow_swap_fw(struct rtw_dev *rtwdev, enum rtw_fw_type type)
{
struct rtw_fw_state *fw;
int ret;
switch (type) {
case RTW_WOWLAN_FW:
fw = &rtwdev->wow_fw;
break;
case RTW_NORMAL_FW:
fw = &rtwdev->fw;
break;
default:
rtw_warn(rtwdev, "unsupported firmware type to swap\n");
return -ENOENT;
}
ret = rtw_download_firmware(rtwdev, fw);
if (ret)
goto out;
rtw_fw_send_general_info(rtwdev);
rtw_fw_send_phydm_info(rtwdev);
rtw_wow_fw_media_status(rtwdev, true);
out:
return ret;
}
static void rtw_wow_check_pno(struct rtw_dev *rtwdev,
struct cfg80211_sched_scan_request *nd_config)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
struct rtw_pno_request *pno_req = &rtw_wow->pno_req;
struct ieee80211_channel *channel;
int i, size;
if (!nd_config->n_match_sets || !nd_config->n_channels)
goto err;
pno_req->match_set_cnt = nd_config->n_match_sets;
size = sizeof(*pno_req->match_sets) * pno_req->match_set_cnt;
pno_req->match_sets = kmemdup(nd_config->match_sets, size, GFP_KERNEL);
if (!pno_req->match_sets)
goto err;
pno_req->channel_cnt = nd_config->n_channels;
size = sizeof(*nd_config->channels[0]) * nd_config->n_channels;
pno_req->channels = kmalloc(size, GFP_KERNEL);
if (!pno_req->channels)
goto channel_err;
for (i = 0 ; i < pno_req->channel_cnt; i++) {
channel = pno_req->channels + i;
memcpy(channel, nd_config->channels[i], sizeof(*channel));
}
pno_req->scan_plan = *nd_config->scan_plans;
pno_req->inited = true;
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: net-detect is enabled\n");
return;
channel_err:
kfree(pno_req->match_sets);
err:
rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: net-detect is disabled\n");
}
static int rtw_wow_leave_linked_ps(struct rtw_dev *rtwdev)
{
if (!test_bit(RTW_FLAG_WOWLAN, rtwdev->flags))
cancel_delayed_work_sync(&rtwdev->watch_dog_work);
rtw_leave_lps(rtwdev);
return 0;
}
static int rtw_wow_leave_no_link_ps(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
int ret = 0;
if (test_bit(RTW_FLAG_WOWLAN, rtwdev->flags)) {
if (rtw_fw_lps_deep_mode)
rtw_leave_lps_deep(rtwdev);
} else {
if (test_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) {
rtw_wow->ips_enabled = true;
ret = rtw_leave_ips(rtwdev);
if (ret)
return ret;
}
}
return 0;
}
static int rtw_wow_leave_ps(struct rtw_dev *rtwdev)
{
int ret = 0;
if (rtw_wow_mgd_linked(rtwdev))
ret = rtw_wow_leave_linked_ps(rtwdev);
else if (rtw_wow_no_link(rtwdev))
ret = rtw_wow_leave_no_link_ps(rtwdev);
return ret;
}
static int rtw_wow_restore_ps(struct rtw_dev *rtwdev)
{
int ret = 0;
if (rtw_wow_no_link(rtwdev) && rtwdev->wow.ips_enabled)
ret = rtw_enter_ips(rtwdev);
return ret;
}
static int rtw_wow_enter_linked_ps(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
struct ieee80211_vif *wow_vif = rtw_wow->wow_vif;
struct rtw_vif *rtwvif = (struct rtw_vif *)wow_vif->drv_priv;
rtw_enter_lps(rtwdev, rtwvif->port);
return 0;
}
static int rtw_wow_enter_no_link_ps(struct rtw_dev *rtwdev)
{
/* firmware enters deep ps by itself if supported */
set_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags);
return 0;
}
static int rtw_wow_enter_ps(struct rtw_dev *rtwdev)
{
int ret = 0;
if (rtw_wow_mgd_linked(rtwdev))
ret = rtw_wow_enter_linked_ps(rtwdev);
else if (rtw_wow_no_link(rtwdev) && rtw_fw_lps_deep_mode)
ret = rtw_wow_enter_no_link_ps(rtwdev);
return ret;
}
static void rtw_wow_stop_trx(struct rtw_dev *rtwdev)
{
rtw_wow_bb_stop(rtwdev);
rtw_wow_rx_dma_stop(rtwdev);
}
static int rtw_wow_start(struct rtw_dev *rtwdev)
{
int ret;
ret = rtw_wow_fw_start(rtwdev);
if (ret)
goto out;
rtw_hci_stop(rtwdev);
rtw_wow_bb_start(rtwdev);
rtw_wow_avoid_reset_mac(rtwdev);
out:
return ret;
}
static int rtw_wow_enable(struct rtw_dev *rtwdev)
{
int ret = 0;
rtw_wow_stop_trx(rtwdev);
ret = rtw_wow_swap_fw(rtwdev, RTW_WOWLAN_FW);
if (ret) {
rtw_err(rtwdev, "failed to swap wow fw\n");
goto error;
}
set_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
ret = rtw_wow_dl_fw_rsvd_page(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to download wowlan rsvd page\n");
goto error;
}
ret = rtw_wow_start(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to start wow\n");
goto error;
}
return ret;
error:
clear_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
return ret;
}
static int rtw_wow_stop(struct rtw_dev *rtwdev)
{
int ret;
/* some HCI related registers will be reset after resume,
* need to set them again.
*/
ret = rtw_hci_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup hci\n");
return ret;
}
ret = rtw_hci_start(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to start hci\n");
return ret;
}
ret = rtw_wow_fw_stop(rtwdev);
if (ret)
rtw_err(rtwdev, "failed to stop wowlan fw\n");
rtw_wow_bb_stop(rtwdev);
return ret;
}
static void rtw_wow_resume_trx(struct rtw_dev *rtwdev)
{
rtw_wow_rx_dma_start(rtwdev);
rtw_wow_bb_start(rtwdev);
ieee80211_queue_delayed_work(rtwdev->hw, &rtwdev->watch_dog_work,
RTW_WATCH_DOG_DELAY_TIME);
}
static int rtw_wow_disable(struct rtw_dev *rtwdev)
{
int ret;
clear_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
ret = rtw_wow_stop(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to stop wow\n");
goto out;
}
ret = rtw_wow_swap_fw(rtwdev, RTW_NORMAL_FW);
if (ret) {
rtw_err(rtwdev, "failed to swap normal fw\n");
goto out;
}
ret = rtw_wow_dl_fw_rsvd_page(rtwdev);
if (ret)
rtw_err(rtwdev, "failed to download normal rsvd page\n");
out:
rtw_wow_resume_trx(rtwdev);
return ret;
}
static void rtw_wow_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct rtw_dev *rtwdev = data;
struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
/* Current wowlan function support setting of only one STATION vif.
* So when one suitable vif is found, stop the iteration.
*/
if (rtw_wow->wow_vif || vif->type != NL80211_IFTYPE_STATION)
return;
switch (rtwvif->net_type) {
case RTW_NET_MGD_LINKED:
rtw_wow->wow_vif = vif;
break;
case RTW_NET_NO_LINK:
if (rtw_wow->pno_req.inited)
rtwdev->wow.wow_vif = vif;
break;
default:
break;
}
}
static int rtw_wow_set_wakeups(struct rtw_dev *rtwdev,
struct cfg80211_wowlan *wowlan)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
struct rtw_wow_pattern *rtw_patterns = rtw_wow->patterns;
struct rtw_vif *rtwvif;
int i;
if (wowlan->disconnect)
set_bit(RTW_WOW_FLAG_EN_DISCONNECT, rtw_wow->flags);
if (wowlan->magic_pkt)
set_bit(RTW_WOW_FLAG_EN_MAGIC_PKT, rtw_wow->flags);
if (wowlan->gtk_rekey_failure)
set_bit(RTW_WOW_FLAG_EN_REKEY_PKT, rtw_wow->flags);
if (wowlan->nd_config)
rtw_wow_check_pno(rtwdev, wowlan->nd_config);
rtw_iterate_vifs_atomic(rtwdev, rtw_wow_vif_iter, rtwdev);
if (!rtw_wow->wow_vif)
return -EPERM;
rtwvif = (struct rtw_vif *)rtw_wow->wow_vif->drv_priv;
if (wowlan->n_patterns && wowlan->patterns) {
rtw_wow->pattern_cnt = wowlan->n_patterns;
for (i = 0; i < wowlan->n_patterns; i++)
rtw_wow_pattern_generate(rtwdev, rtwvif,
wowlan->patterns + i,
rtw_patterns + i);
}
return 0;
}
static void rtw_wow_clear_wakeups(struct rtw_dev *rtwdev)
{
struct rtw_wow_param *rtw_wow = &rtwdev->wow;
struct rtw_pno_request *pno_req = &rtw_wow->pno_req;
if (pno_req->inited) {
kfree(pno_req->channels);
kfree(pno_req->match_sets);
}
memset(rtw_wow, 0, sizeof(rtwdev->wow));
}
int rtw_wow_suspend(struct rtw_dev *rtwdev, struct cfg80211_wowlan *wowlan)
{
int ret = 0;
ret = rtw_wow_set_wakeups(rtwdev, wowlan);
if (ret) {
rtw_err(rtwdev, "failed to set wakeup event\n");
goto out;
}
ret = rtw_wow_leave_ps(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to leave ps from normal mode\n");
goto out;
}
ret = rtw_wow_enable(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to enable wow\n");
rtw_wow_restore_ps(rtwdev);
goto out;
}
ret = rtw_wow_enter_ps(rtwdev);
if (ret)
rtw_err(rtwdev, "failed to enter ps for wow\n");
out:
return ret;
}
int rtw_wow_resume(struct rtw_dev *rtwdev)
{
int ret;
/* If wowlan mode is not enabled, do nothing */
if (!test_bit(RTW_FLAG_WOWLAN, rtwdev->flags)) {
rtw_err(rtwdev, "wow is not enabled\n");
ret = -EPERM;
goto out;
}
ret = rtw_wow_leave_ps(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to leave ps from wowlan mode\n");
goto out;
}
rtw_wow_show_wakeup_reason(rtwdev);
ret = rtw_wow_disable(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to disable wow\n");
goto out;
}
ret = rtw_wow_restore_ps(rtwdev);
if (ret)
rtw_err(rtwdev, "failed to restore ps to normal mode\n");
out:
rtw_wow_clear_wakeups(rtwdev);
return ret;
}