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linux/drivers/net/wireless/rtlwifi/rtl8192se/fw.c
Fabian Frederick 4a4730ceab rtlwifi: rtl8192se: remove unnecessary break after return 
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-20 21:29:50 -07:00

653 lines
17 KiB
C
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/******************************************************************************
*
* Copyright(c) 2009-2012 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
#include "../wifi.h"
#include "../pci.h"
#include "../base.h"
#include "reg.h"
#include "def.h"
#include "fw.h"
static void _rtl92s_fw_set_rqpn(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
rtl_write_dword(rtlpriv, RQPN, 0xffffffff);
rtl_write_dword(rtlpriv, RQPN + 4, 0xffffffff);
rtl_write_byte(rtlpriv, RQPN + 8, 0xff);
rtl_write_byte(rtlpriv, RQPN + 0xB, 0x80);
}
static bool _rtl92s_firmware_enable_cpu(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 ichecktime = 200;
u16 tmpu2b;
u8 tmpu1b, cpustatus = 0;
_rtl92s_fw_set_rqpn(hw);
/* Enable CPU. */
tmpu1b = rtl_read_byte(rtlpriv, SYS_CLKR);
/* AFE source */
rtl_write_byte(rtlpriv, SYS_CLKR, (tmpu1b | SYS_CPU_CLKSEL));
tmpu2b = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN);
rtl_write_word(rtlpriv, REG_SYS_FUNC_EN, (tmpu2b | FEN_CPUEN));
/* Polling IMEM Ready after CPU has refilled. */
do {
cpustatus = rtl_read_byte(rtlpriv, TCR);
if (cpustatus & IMEM_RDY) {
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"IMEM Ready after CPU has refilled\n");
break;
}
udelay(100);
} while (ichecktime--);
if (!(cpustatus & IMEM_RDY))
return false;
return true;
}
static enum fw_status _rtl92s_firmware_get_nextstatus(
enum fw_status fw_currentstatus)
{
enum fw_status next_fwstatus = 0;
switch (fw_currentstatus) {
case FW_STATUS_INIT:
next_fwstatus = FW_STATUS_LOAD_IMEM;
break;
case FW_STATUS_LOAD_IMEM:
next_fwstatus = FW_STATUS_LOAD_EMEM;
break;
case FW_STATUS_LOAD_EMEM:
next_fwstatus = FW_STATUS_LOAD_DMEM;
break;
case FW_STATUS_LOAD_DMEM:
next_fwstatus = FW_STATUS_READY;
break;
default:
break;
}
return next_fwstatus;
}
static u8 _rtl92s_firmware_header_map_rftype(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_phy *rtlphy = &(rtlpriv->phy);
switch (rtlphy->rf_type) {
case RF_1T1R:
return 0x11;
case RF_1T2R:
return 0x12;
case RF_2T2R:
return 0x22;
default:
RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Unknown RF type(%x)\n",
rtlphy->rf_type);
break;
}
return 0x22;
}
static void _rtl92s_firmwareheader_priveupdate(struct ieee80211_hw *hw,
struct fw_priv *pfw_priv)
{
/* Update RF types for RATR settings. */
pfw_priv->rf_config = _rtl92s_firmware_header_map_rftype(hw);
}
static bool _rtl92s_cmd_send_packet(struct ieee80211_hw *hw,
struct sk_buff *skb, u8 last)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
struct rtl8192_tx_ring *ring;
struct rtl_tx_desc *pdesc;
unsigned long flags;
u8 idx = 0;
ring = &rtlpci->tx_ring[TXCMD_QUEUE];
spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
pdesc = &ring->desc[idx];
rtlpriv->cfg->ops->fill_tx_cmddesc(hw, (u8 *)pdesc, 1, 1, skb);
__skb_queue_tail(&ring->queue, skb);
spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
return true;
}
static bool _rtl92s_firmware_downloadcode(struct ieee80211_hw *hw,
u8 *code_virtual_address, u32 buffer_len)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct sk_buff *skb;
struct rtl_tcb_desc *tcb_desc;
unsigned char *seg_ptr;
u16 frag_threshold = MAX_FIRMWARE_CODE_SIZE;
u16 frag_length, frag_offset = 0;
u16 extra_descoffset = 0;
u8 last_inipkt = 0;
_rtl92s_fw_set_rqpn(hw);
if (buffer_len >= MAX_FIRMWARE_CODE_SIZE) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Size over FIRMWARE_CODE_SIZE!\n");
return false;
}
extra_descoffset = 0;
do {
if ((buffer_len - frag_offset) > frag_threshold) {
frag_length = frag_threshold + extra_descoffset;
} else {
frag_length = (u16)(buffer_len - frag_offset +
extra_descoffset);
last_inipkt = 1;
}
/* Allocate skb buffer to contain firmware */
/* info and tx descriptor info. */
skb = dev_alloc_skb(frag_length);
if (!skb)
return false;
skb_reserve(skb, extra_descoffset);
seg_ptr = (u8 *)skb_put(skb, (u32)(frag_length -
extra_descoffset));
memcpy(seg_ptr, code_virtual_address + frag_offset,
(u32)(frag_length - extra_descoffset));
tcb_desc = (struct rtl_tcb_desc *)(skb->cb);
tcb_desc->queue_index = TXCMD_QUEUE;
tcb_desc->cmd_or_init = DESC_PACKET_TYPE_INIT;
tcb_desc->last_inipkt = last_inipkt;
_rtl92s_cmd_send_packet(hw, skb, last_inipkt);
frag_offset += (frag_length - extra_descoffset);
} while (frag_offset < buffer_len);
rtl_write_byte(rtlpriv, TP_POLL, TPPOLL_CQ);
return true ;
}
static bool _rtl92s_firmware_checkready(struct ieee80211_hw *hw,
u8 loadfw_status)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rt_firmware *firmware = (struct rt_firmware *)rtlhal->pfirmware;
u32 tmpu4b;
u8 cpustatus = 0;
short pollingcnt = 1000;
bool rtstatus = true;
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"LoadStaus(%d)\n", loadfw_status);
firmware->fwstatus = (enum fw_status)loadfw_status;
switch (loadfw_status) {
case FW_STATUS_LOAD_IMEM:
/* Polling IMEM code done. */
do {
cpustatus = rtl_read_byte(rtlpriv, TCR);
if (cpustatus & IMEM_CODE_DONE)
break;
udelay(5);
} while (pollingcnt--);
if (!(cpustatus & IMEM_CHK_RPT) || (pollingcnt <= 0)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"FW_STATUS_LOAD_IMEM FAIL CPU, Status=%x\n",
cpustatus);
goto status_check_fail;
}
break;
case FW_STATUS_LOAD_EMEM:
/* Check Put Code OK and Turn On CPU */
/* Polling EMEM code done. */
do {
cpustatus = rtl_read_byte(rtlpriv, TCR);
if (cpustatus & EMEM_CODE_DONE)
break;
udelay(5);
} while (pollingcnt--);
if (!(cpustatus & EMEM_CHK_RPT) || (pollingcnt <= 0)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"FW_STATUS_LOAD_EMEM FAIL CPU, Status=%x\n",
cpustatus);
goto status_check_fail;
}
/* Turn On CPU */
rtstatus = _rtl92s_firmware_enable_cpu(hw);
if (!rtstatus) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Enable CPU fail!\n");
goto status_check_fail;
}
break;
case FW_STATUS_LOAD_DMEM:
/* Polling DMEM code done */
do {
cpustatus = rtl_read_byte(rtlpriv, TCR);
if (cpustatus & DMEM_CODE_DONE)
break;
udelay(5);
} while (pollingcnt--);
if (!(cpustatus & DMEM_CODE_DONE) || (pollingcnt <= 0)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Polling DMEM code done fail ! cpustatus(%#x)\n",
cpustatus);
goto status_check_fail;
}
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"DMEM code download success, cpustatus(%#x)\n",
cpustatus);
/* Prevent Delay too much and being scheduled out */
/* Polling Load Firmware ready */
pollingcnt = 2000;
do {
cpustatus = rtl_read_byte(rtlpriv, TCR);
if (cpustatus & FWRDY)
break;
udelay(40);
} while (pollingcnt--);
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"Polling Load Firmware ready, cpustatus(%x)\n",
cpustatus);
if (((cpustatus & LOAD_FW_READY) != LOAD_FW_READY) ||
(pollingcnt <= 0)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Polling Load Firmware ready fail ! cpustatus(%x)\n",
cpustatus);
goto status_check_fail;
}
/* If right here, we can set TCR/RCR to desired value */
/* and config MAC lookback mode to normal mode */
tmpu4b = rtl_read_dword(rtlpriv, TCR);
rtl_write_dword(rtlpriv, TCR, (tmpu4b & (~TCR_ICV)));
tmpu4b = rtl_read_dword(rtlpriv, RCR);
rtl_write_dword(rtlpriv, RCR, (tmpu4b | RCR_APPFCS |
RCR_APP_ICV | RCR_APP_MIC));
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"Current RCR settings(%#x)\n", tmpu4b);
/* Set to normal mode. */
rtl_write_byte(rtlpriv, LBKMD_SEL, LBK_NORMAL);
break;
default:
RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
"Unknown status check!\n");
rtstatus = false;
break;
}
status_check_fail:
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"loadfw_status(%d), rtstatus(%x)\n",
loadfw_status, rtstatus);
return rtstatus;
}
int rtl92s_download_fw(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rt_firmware *firmware = NULL;
struct fw_hdr *pfwheader;
struct fw_priv *pfw_priv = NULL;
u8 *puc_mappedfile = NULL;
u32 ul_filelength = 0;
u8 fwhdr_size = RT_8192S_FIRMWARE_HDR_SIZE;
u8 fwstatus = FW_STATUS_INIT;
bool rtstatus = true;
if (rtlpriv->max_fw_size == 0 || !rtlhal->pfirmware)
return 1;
firmware = (struct rt_firmware *)rtlhal->pfirmware;
firmware->fwstatus = FW_STATUS_INIT;
puc_mappedfile = firmware->sz_fw_tmpbuffer;
/* 1. Retrieve FW header. */
firmware->pfwheader = (struct fw_hdr *) puc_mappedfile;
pfwheader = firmware->pfwheader;
firmware->firmwareversion = byte(pfwheader->version, 0);
firmware->pfwheader->fwpriv.hci_sel = 1;/* pcie */
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"signature:%x, version:%x, size:%x, imemsize:%x, sram size:%x\n",
pfwheader->signature,
pfwheader->version, pfwheader->dmem_size,
pfwheader->img_imem_size, pfwheader->img_sram_size);
/* 2. Retrieve IMEM image. */
if ((pfwheader->img_imem_size == 0) || (pfwheader->img_imem_size >
sizeof(firmware->fw_imem))) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"memory for data image is less than IMEM required\n");
goto fail;
} else {
puc_mappedfile += fwhdr_size;
memcpy(firmware->fw_imem, puc_mappedfile,
pfwheader->img_imem_size);
firmware->fw_imem_len = pfwheader->img_imem_size;
}
/* 3. Retriecve EMEM image. */
if (pfwheader->img_sram_size > sizeof(firmware->fw_emem)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"memory for data image is less than EMEM required\n");
goto fail;
} else {
puc_mappedfile += firmware->fw_imem_len;
memcpy(firmware->fw_emem, puc_mappedfile,
pfwheader->img_sram_size);
firmware->fw_emem_len = pfwheader->img_sram_size;
}
/* 4. download fw now */
fwstatus = _rtl92s_firmware_get_nextstatus(firmware->fwstatus);
while (fwstatus != FW_STATUS_READY) {
/* Image buffer redirection. */
switch (fwstatus) {
case FW_STATUS_LOAD_IMEM:
puc_mappedfile = firmware->fw_imem;
ul_filelength = firmware->fw_imem_len;
break;
case FW_STATUS_LOAD_EMEM:
puc_mappedfile = firmware->fw_emem;
ul_filelength = firmware->fw_emem_len;
break;
case FW_STATUS_LOAD_DMEM:
/* Partial update the content of header private. */
pfwheader = firmware->pfwheader;
pfw_priv = &pfwheader->fwpriv;
_rtl92s_firmwareheader_priveupdate(hw, pfw_priv);
puc_mappedfile = (u8 *)(firmware->pfwheader) +
RT_8192S_FIRMWARE_HDR_EXCLUDE_PRI_SIZE;
ul_filelength = fwhdr_size -
RT_8192S_FIRMWARE_HDR_EXCLUDE_PRI_SIZE;
break;
default:
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"Unexpected Download step!!\n");
goto fail;
}
/* <2> Download image file */
rtstatus = _rtl92s_firmware_downloadcode(hw, puc_mappedfile,
ul_filelength);
if (!rtstatus) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "fail!\n");
goto fail;
}
/* <3> Check whether load FW process is ready */
rtstatus = _rtl92s_firmware_checkready(hw, fwstatus);
if (!rtstatus) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "fail!\n");
goto fail;
}
fwstatus = _rtl92s_firmware_get_nextstatus(firmware->fwstatus);
}
return rtstatus;
fail:
return 0;
}
static u32 _rtl92s_fill_h2c_cmd(struct sk_buff *skb, u32 h2cbufferlen,
u32 cmd_num, u32 *pelement_id, u32 *pcmd_len,
u8 **pcmb_buffer, u8 *cmd_start_seq)
{
u32 totallen = 0, len = 0, tx_desclen = 0;
u32 pre_continueoffset = 0;
u8 *ph2c_buffer;
u8 i = 0;
do {
/* 8 - Byte aligment */
len = H2C_TX_CMD_HDR_LEN + N_BYTE_ALIGMENT(pcmd_len[i], 8);
/* Buffer length is not enough */
if (h2cbufferlen < totallen + len + tx_desclen)
break;
/* Clear content */
ph2c_buffer = (u8 *)skb_put(skb, (u32)len);
memset((ph2c_buffer + totallen + tx_desclen), 0, len);
/* CMD len */
SET_BITS_TO_LE_4BYTE((ph2c_buffer + totallen + tx_desclen),
0, 16, pcmd_len[i]);
/* CMD ID */
SET_BITS_TO_LE_4BYTE((ph2c_buffer + totallen + tx_desclen),
16, 8, pelement_id[i]);
/* CMD Sequence */
*cmd_start_seq = *cmd_start_seq % 0x80;
SET_BITS_TO_LE_4BYTE((ph2c_buffer + totallen + tx_desclen),
24, 7, *cmd_start_seq);
++*cmd_start_seq;
/* Copy memory */
memcpy((ph2c_buffer + totallen + tx_desclen +
H2C_TX_CMD_HDR_LEN), pcmb_buffer[i], pcmd_len[i]);
/* CMD continue */
/* set the continue in prevoius cmd. */
if (i < cmd_num - 1)
SET_BITS_TO_LE_4BYTE((ph2c_buffer + pre_continueoffset),
31, 1, 1);
pre_continueoffset = totallen;
totallen += len;
} while (++i < cmd_num);
return totallen;
}
static u32 _rtl92s_get_h2c_cmdlen(u32 h2cbufferlen, u32 cmd_num, u32 *pcmd_len)
{
u32 totallen = 0, len = 0, tx_desclen = 0;
u8 i = 0;
do {
/* 8 - Byte aligment */
len = H2C_TX_CMD_HDR_LEN + N_BYTE_ALIGMENT(pcmd_len[i], 8);
/* Buffer length is not enough */
if (h2cbufferlen < totallen + len + tx_desclen)
break;
totallen += len;
} while (++i < cmd_num);
return totallen + tx_desclen;
}
static bool _rtl92s_firmware_set_h2c_cmd(struct ieee80211_hw *hw, u8 h2c_cmd,
u8 *pcmd_buffer)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_tcb_desc *cb_desc;
struct sk_buff *skb;
u32 element_id = 0;
u32 cmd_len = 0;
u32 len;
switch (h2c_cmd) {
case FW_H2C_SETPWRMODE:
element_id = H2C_SETPWRMODE_CMD ;
cmd_len = sizeof(struct h2c_set_pwrmode_parm);
break;
case FW_H2C_JOINBSSRPT:
element_id = H2C_JOINBSSRPT_CMD;
cmd_len = sizeof(struct h2c_joinbss_rpt_parm);
break;
case FW_H2C_WOWLAN_UPDATE_GTK:
element_id = H2C_WOWLAN_UPDATE_GTK_CMD;
cmd_len = sizeof(struct h2c_wpa_two_way_parm);
break;
case FW_H2C_WOWLAN_UPDATE_IV:
element_id = H2C_WOWLAN_UPDATE_IV_CMD;
cmd_len = sizeof(unsigned long long);
break;
case FW_H2C_WOWLAN_OFFLOAD:
element_id = H2C_WOWLAN_FW_OFFLOAD;
cmd_len = sizeof(u8);
break;
default:
break;
}
len = _rtl92s_get_h2c_cmdlen(MAX_TRANSMIT_BUFFER_SIZE, 1, &cmd_len);
skb = dev_alloc_skb(len);
if (!skb)
return false;
cb_desc = (struct rtl_tcb_desc *)(skb->cb);
cb_desc->queue_index = TXCMD_QUEUE;
cb_desc->cmd_or_init = DESC_PACKET_TYPE_NORMAL;
cb_desc->last_inipkt = false;
_rtl92s_fill_h2c_cmd(skb, MAX_TRANSMIT_BUFFER_SIZE, 1, &element_id,
&cmd_len, &pcmd_buffer, &rtlhal->h2c_txcmd_seq);
_rtl92s_cmd_send_packet(hw, skb, false);
rtlpriv->cfg->ops->tx_polling(hw, TXCMD_QUEUE);
return true;
}
void rtl92s_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 Mode)
{
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
struct h2c_set_pwrmode_parm pwrmode;
u16 max_wakeup_period = 0;
pwrmode.mode = Mode;
pwrmode.flag_low_traffic_en = 0;
pwrmode.flag_lpnav_en = 0;
pwrmode.flag_rf_low_snr_en = 0;
pwrmode.flag_dps_en = 0;
pwrmode.bcn_rx_en = 0;
pwrmode.bcn_to = 0;
SET_BITS_TO_LE_2BYTE((u8 *)(&pwrmode) + 8, 0, 16,
mac->vif->bss_conf.beacon_int);
pwrmode.app_itv = 0;
pwrmode.awake_bcn_itvl = ppsc->reg_max_lps_awakeintvl;
pwrmode.smart_ps = 1;
pwrmode.bcn_pass_period = 10;
/* Set beacon pass count */
if (pwrmode.mode == FW_PS_MIN_MODE)
max_wakeup_period = mac->vif->bss_conf.beacon_int;
else if (pwrmode.mode == FW_PS_MAX_MODE)
max_wakeup_period = mac->vif->bss_conf.beacon_int *
mac->vif->bss_conf.dtim_period;
if (max_wakeup_period >= 500)
pwrmode.bcn_pass_cnt = 1;
else if ((max_wakeup_period >= 300) && (max_wakeup_period < 500))
pwrmode.bcn_pass_cnt = 2;
else if ((max_wakeup_period >= 200) && (max_wakeup_period < 300))
pwrmode.bcn_pass_cnt = 3;
else if ((max_wakeup_period >= 20) && (max_wakeup_period < 200))
pwrmode.bcn_pass_cnt = 5;
else
pwrmode.bcn_pass_cnt = 1;
_rtl92s_firmware_set_h2c_cmd(hw, FW_H2C_SETPWRMODE, (u8 *)&pwrmode);
}
void rtl92s_set_fw_joinbss_report_cmd(struct ieee80211_hw *hw,
u8 mstatus, u8 ps_qosinfo)
{
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct h2c_joinbss_rpt_parm joinbss_rpt;
joinbss_rpt.opmode = mstatus;
joinbss_rpt.ps_qos_info = ps_qosinfo;
joinbss_rpt.bssid[0] = mac->bssid[0];
joinbss_rpt.bssid[1] = mac->bssid[1];
joinbss_rpt.bssid[2] = mac->bssid[2];
joinbss_rpt.bssid[3] = mac->bssid[3];
joinbss_rpt.bssid[4] = mac->bssid[4];
joinbss_rpt.bssid[5] = mac->bssid[5];
SET_BITS_TO_LE_2BYTE((u8 *)(&joinbss_rpt) + 8, 0, 16,
mac->vif->bss_conf.beacon_int);
SET_BITS_TO_LE_2BYTE((u8 *)(&joinbss_rpt) + 10, 0, 16, mac->assoc_id);
_rtl92s_firmware_set_h2c_cmd(hw, FW_H2C_JOINBSSRPT, (u8 *)&joinbss_rpt);
}
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