// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/* Copyright(c) 2018-2019 Realtek Corporation
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*/
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#include "main.h"
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#include "fw.h"
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#include "wow.h"
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#include "reg.h"
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#include "debug.h"
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#include "mac.h"
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#include "ps.h"
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static void rtw_wow_show_wakeup_reason(struct rtw_dev *rtwdev)
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{
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u8 reason;
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reason = rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON);
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if (reason == RTW_WOW_RSN_RX_DEAUTH)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx deauth\n");
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else if (reason == RTW_WOW_RSN_DISCONNECT)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: AP is off\n");
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else if (reason == RTW_WOW_RSN_RX_MAGIC_PKT)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx magic packet\n");
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else if (reason == RTW_WOW_RSN_RX_GTK_REKEY)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx gtk rekey\n");
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else if (reason == RTW_WOW_RSN_RX_PTK_REKEY)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx ptk rekey\n");
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else if (reason == RTW_WOW_RSN_RX_PATTERN_MATCH)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx pattern match packet\n");
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else if (reason == RTW_WOW_RSN_RX_NLO)
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rtw_dbg(rtwdev, RTW_DBG_WOW, "Rx NLO\n");
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else
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rtw_warn(rtwdev, "Unknown wakeup reason %x\n", reason);
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}
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static void rtw_wow_pattern_write_cam(struct rtw_dev *rtwdev, u8 addr,
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u32 wdata)
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{
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rtw_write32(rtwdev, REG_WKFMCAM_RWD, wdata);
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rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
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BIT_WKFCAM_WE | BIT_WKFCAM_ADDR_V2(addr));
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if (!check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0))
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rtw_err(rtwdev, "failed to write pattern cam\n");
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}
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static void rtw_wow_pattern_write_cam_ent(struct rtw_dev *rtwdev, u8 id,
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struct rtw_wow_pattern *rtw_pattern)
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{
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int i;
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u8 addr;
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u32 wdata;
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for (i = 0; i < RTW_MAX_PATTERN_MASK_SIZE / 4; i++) {
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addr = (id << 3) + i;
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wdata = rtw_pattern->mask[i * 4];
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wdata |= rtw_pattern->mask[i * 4 + 1] << 8;
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wdata |= rtw_pattern->mask[i * 4 + 2] << 16;
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wdata |= rtw_pattern->mask[i * 4 + 3] << 24;
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rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
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}
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wdata = rtw_pattern->crc;
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addr = (id << 3) + RTW_MAX_PATTERN_MASK_SIZE / 4;
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switch (rtw_pattern->type) {
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case RTW_PATTERN_BROADCAST:
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wdata |= BIT_WKFMCAM_BC | BIT_WKFMCAM_VALID;
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break;
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case RTW_PATTERN_MULTICAST:
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wdata |= BIT_WKFMCAM_MC | BIT_WKFMCAM_VALID;
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break;
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case RTW_PATTERN_UNICAST:
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wdata |= BIT_WKFMCAM_UC | BIT_WKFMCAM_VALID;
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break;
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default:
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break;
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}
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rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
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}
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/* RTK internal CRC16 for Pattern Cam */
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static u16 __rtw_cal_crc16(u8 data, u16 crc)
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{
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u8 shift_in, data_bit;
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u8 crc_bit4, crc_bit11, crc_bit15;
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u16 crc_result;
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int index;
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for (index = 0; index < 8; index++) {
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crc_bit15 = ((crc & BIT(15)) ? 1 : 0);
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data_bit = (data & (BIT(0) << index) ? 1 : 0);
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shift_in = crc_bit15 ^ data_bit;
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crc_result = crc << 1;
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if (shift_in == 0)
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crc_result &= (~BIT(0));
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else
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crc_result |= BIT(0);
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crc_bit11 = ((crc & BIT(11)) ? 1 : 0) ^ shift_in;
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if (crc_bit11 == 0)
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crc_result &= (~BIT(12));
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else
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crc_result |= BIT(12);
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crc_bit4 = ((crc & BIT(4)) ? 1 : 0) ^ shift_in;
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if (crc_bit4 == 0)
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crc_result &= (~BIT(5));
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else
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crc_result |= BIT(5);
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crc = crc_result;
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}
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return crc;
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}
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static u16 rtw_calc_crc(u8 *pdata, int length)
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{
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u16 crc = 0xffff;
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int i;
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for (i = 0; i < length; i++)
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crc = __rtw_cal_crc16(pdata[i], crc);
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/* get 1' complement */
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return ~crc;
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}
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static void rtw_wow_pattern_generate(struct rtw_dev *rtwdev,
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struct rtw_vif *rtwvif,
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const struct cfg80211_pkt_pattern *pkt_pattern,
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struct rtw_wow_pattern *rtw_pattern)
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{
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const u8 *mask;
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const u8 *pattern;
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u8 mask_hw[RTW_MAX_PATTERN_MASK_SIZE] = {0};
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u8 content[RTW_MAX_PATTERN_SIZE] = {0};
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u8 mac_addr[ETH_ALEN] = {0};
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u8 mask_len;
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u16 count;
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int len;
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int i;
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pattern = pkt_pattern->pattern;
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len = pkt_pattern->pattern_len;
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mask = pkt_pattern->mask;
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ether_addr_copy(mac_addr, rtwvif->mac_addr);
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memset(rtw_pattern, 0, sizeof(*rtw_pattern));
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mask_len = DIV_ROUND_UP(len, 8);
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if (is_broadcast_ether_addr(pattern))
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rtw_pattern->type = RTW_PATTERN_BROADCAST;
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else if (is_multicast_ether_addr(pattern))
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rtw_pattern->type = RTW_PATTERN_MULTICAST;
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else if (ether_addr_equal(pattern, mac_addr))
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rtw_pattern->type = RTW_PATTERN_UNICAST;
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else
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rtw_pattern->type = RTW_PATTERN_INVALID;
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/* translate mask from os to mask for hw
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* pattern from OS uses 'ethenet frame', like this:
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* | 6 | 6 | 2 | 20 | Variable | 4 |
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* |--------+--------+------+-----------+------------+-----|
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* | 802.3 Mac Header | IP Header | TCP Packet | FCS |
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* | DA | SA | Type |
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*
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* BUT, packet catched by our HW is in '802.11 frame', begin from LLC
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* | 24 or 30 | 6 | 2 | 20 | Variable | 4 |
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* |-------------------+--------+------+-----------+------------+-----|
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* | 802.11 MAC Header | LLC | IP Header | TCP Packet | FCS |
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* | Others | Tpye |
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*
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* Therefore, we need translate mask_from_OS to mask_to_hw.
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* We should left-shift mask by 6 bits, then set the new bit[0~5] = 0,
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* because new mask[0~5] means 'SA', but our HW packet begins from LLC,
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* bit[0~5] corresponds to first 6 Bytes in LLC, they just don't match.
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*/
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/* Shift 6 bits */
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for (i = 0; i < mask_len - 1; i++) {
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mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
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mask_hw[i] |= u8_get_bits(mask[i + 1], GENMASK(5, 0)) << 2;
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}
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mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
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/* Set bit 0-5 to zero */
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mask_hw[0] &= (~GENMASK(5, 0));
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memcpy(rtw_pattern->mask, mask_hw, RTW_MAX_PATTERN_MASK_SIZE);
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/* To get the wake up pattern from the mask.
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* We do not count first 12 bits which means
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* DA[6] and SA[6] in the pattern to match HW design.
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*/
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count = 0;
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for (i = 12; i < len; i++) {
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if ((mask[i / 8] >> (i % 8)) & 0x01) {
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content[count] = pattern[i];
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count++;
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}
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}
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rtw_pattern->crc = rtw_calc_crc(content, count);
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}
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static void rtw_wow_pattern_clear_cam(struct rtw_dev *rtwdev)
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{
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bool ret;
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rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
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BIT_WKFCAM_CLR_V1);
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ret = check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0);
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if (!ret)
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rtw_err(rtwdev, "failed to clean pattern cam\n");
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}
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static void rtw_wow_pattern_write(struct rtw_dev *rtwdev)
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{
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struct rtw_wow_param *rtw_wow = &rtwdev->wow;
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struct rtw_wow_pattern *rtw_pattern = rtw_wow->patterns;
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int i = 0;
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for (i = 0; i < rtw_wow->pattern_cnt; i++)
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rtw_wow_pattern_write_cam_ent(rtwdev, i, rtw_pattern + i);
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}
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static void rtw_wow_pattern_clear(struct rtw_dev *rtwdev)
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{
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struct rtw_wow_param *rtw_wow = &rtwdev->wow;
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rtw_wow_pattern_clear_cam(rtwdev);
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rtw_wow->pattern_cnt = 0;
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memset(rtw_wow->patterns, 0, sizeof(rtw_wow->patterns));
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}
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static void rtw_wow_bb_stop(struct rtw_dev *rtwdev)
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{
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struct rtw_wow_param *rtw_wow = &rtwdev->wow;
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/* wait 100ms for firmware to finish TX */
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msleep(100);
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if (!rtw_read32_mask(rtwdev, REG_BCNQ_INFO, BIT_MGQ_CPU_EMPTY))
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rtw_warn(rtwdev, "Wrong status of MGQ_CPU empty!\n");
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rtw_wow->txpause = rtw_read8(rtwdev, REG_TXPAUSE);
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rtw_write8(rtwdev, REG_TXPAUSE, 0xff);
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rtw_write8_clr(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
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}
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static void rtw_wow_bb_start(struct rtw_dev *rtwdev)
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{
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struct rtw_wow_param *rtw_wow = &rtwdev->wow;
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rtw_write8_set(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
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rtw_write8(rtwdev, REG_TXPAUSE, rtw_wow->txpause);
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}
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static void rtw_wow_rx_dma_stop(struct rtw_dev *rtwdev)
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{
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/* wait 100ms for HW to finish rx dma */
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msleep(100);
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rtw_write32_set(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
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if (!check_hw_ready(rtwdev, REG_RXPKT_NUM, BIT_RXDMA_IDLE, 1))
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rtw_err(rtwdev, "failed to stop rx dma\n");
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}
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static void rtw_wow_rx_dma_start(struct rtw_dev *rtwdev)
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{
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rtw_write32_clr(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
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}
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static int rtw_wow_check_fw_status(struct rtw_dev *rtwdev, bool wow_enable)
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{
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int ret;
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u8 check;
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u32 check_dis;
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if (wow_enable) {
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ret = read_poll_timeout(rtw_read8, check, !check, 1000,
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100000, true, rtwdev,
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REG_WOWLAN_WAKE_REASON);
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if (ret)
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goto wow_fail;
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} else {
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ret = read_poll_timeout(rtw_read32_mask, check_dis,
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!check_dis, 1000, 100000, true, rtwdev,
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REG_FE1IMR, BIT_FS_RXDONE);
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if (ret)
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goto wow_fail;
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ret = read_poll_timeout(rtw_read32_mask, check_dis,
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!check_dis, 1000, 100000, false, rtwdev,
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REG_RXPKT_NUM, BIT_RW_RELEASE);
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if (ret)
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goto wow_fail;
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}
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return 0;
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wow_fail:
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rtw_err(rtwdev, "failed to check wow status %s\n",
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wow_enable ? "enabled" : "disabled");
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return -EBUSY;
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}
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static void rtw_wow_fw_security_type_iter(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif,
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struct ieee80211_sta *sta,
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struct ieee80211_key_conf *key,
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void *data)
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{
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struct rtw_fw_key_type_iter_data *iter_data = data;
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struct rtw_dev *rtwdev = hw->priv;
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u8 hw_key_type;
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if (vif != rtwdev->wow.wow_vif)
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return;
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switch (key->cipher) {
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case WLAN_CIPHER_SUITE_WEP40:
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hw_key_type = RTW_CAM_WEP40;
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break;
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case WLAN_CIPHER_SUITE_WEP104:
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hw_key_type = RTW_CAM_WEP104;
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break;
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case WLAN_CIPHER_SUITE_TKIP:
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hw_key_type = RTW_CAM_TKIP;
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key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
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break;
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case WLAN_CIPHER_SUITE_CCMP:
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hw_key_type = RTW_CAM_AES;
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key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
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break;
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default:
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rtw_err(rtwdev, "Unsupported key type for wowlan mode\n");
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hw_key_type = 0;
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break;
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}
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if (sta)
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iter_data->pairwise_key_type = hw_key_type;
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else
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iter_data->group_key_type = hw_key_type;
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}
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static void rtw_wow_fw_security_type(struct rtw_dev *rtwdev)
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{
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struct rtw_fw_key_type_iter_data data = {};
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struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
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data.rtwdev = rtwdev;
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rtw_iterate_keys(rtwdev, wow_vif,
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rtw_wow_fw_security_type_iter, &data);
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rtw_fw_set_aoac_global_info_cmd(rtwdev, data.pairwise_key_type,
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data.group_key_type);
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}
|
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static int rtw_wow_fw_start(struct rtw_dev *rtwdev)
|
{
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if (rtw_wow_mgd_linked(rtwdev)) {
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rtw_send_rsvd_page_h2c(rtwdev);
|
rtw_wow_pattern_write(rtwdev);
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rtw_wow_fw_security_type(rtwdev);
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rtw_fw_set_disconnect_decision_cmd(rtwdev, true);
|
rtw_fw_set_keep_alive_cmd(rtwdev, true);
|
} else if (rtw_wow_no_link(rtwdev)) {
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rtw_fw_set_nlo_info(rtwdev, true);
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rtw_fw_update_pkt_probe_req(rtwdev, NULL);
|
rtw_fw_channel_switch(rtwdev, true);
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}
|
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rtw_fw_set_wowlan_ctrl_cmd(rtwdev, true);
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rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, true);
|
|
return rtw_wow_check_fw_status(rtwdev, true);
|
}
|
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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);
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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);
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rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, false);
|
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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;
|
}
|
