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rtl8812au/hal/phydm/txbf/haltxbfjaguar.c

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/******************************************************************************
*
* Copyright(c) 2016 - 2017 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.
*
*****************************************************************************/
/* ************************************************************
* Description:
*
* This file is for 8812/8821/8811 TXBF mechanism
*
* ************************************************************ */
#include "mp_precomp.h"
#include "../phydm_precomp.h"
#if (BEAMFORMING_SUPPORT == 1)
#if ((RTL8812A_SUPPORT == 1) || (RTL8821A_SUPPORT == 1))
void
hal_txbf_8812a_set_ndpa_rate(
void *dm_void,
u8 BW,
u8 rate
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
odm_write_1byte(dm, REG_NDPA_OPT_CTRL_8812A, (rate << 2 | BW));
}
void
hal_txbf_jaguar_rf_mode(
void *dm_void,
struct _RT_BEAMFORMING_INFO *beam_info
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
if (dm->rf_type == RF_1T1R)
return;
PHYDM_DBG(dm, DBG_TXBF, "[%s] set TxIQGen\n", __func__);
odm_set_rf_reg(dm, RF_PATH_A, 0xef, 0x80000, 0x1); /*RF mode table write enable*/
odm_set_rf_reg(dm, RF_PATH_B, 0xef, 0x80000, 0x1); /*RF mode table write enable*/
if (beam_info->beamformee_su_cnt > 0) {
/* Paath_A */
odm_set_rf_reg(dm, RF_PATH_A, 0x30, 0x78000, 0x3); /*Select RX mode*/
odm_set_rf_reg(dm, RF_PATH_A, 0x31, 0xfffff, 0x3F7FF); /*Set Table data*/
odm_set_rf_reg(dm, RF_PATH_A, 0x32, 0xfffff, 0xE26BF); /*Enable TXIQGEN in RX mode*/
/* Path_B */
odm_set_rf_reg(dm, RF_PATH_B, 0x30, 0x78000, 0x3); /*Select RX mode*/
odm_set_rf_reg(dm, RF_PATH_B, 0x31, 0xfffff, 0x3F7FF); /*Set Table data*/
odm_set_rf_reg(dm, RF_PATH_B, 0x32, 0xfffff, 0xE26BF); /*Enable TXIQGEN in RX mode*/
} else {
/* Paath_A */
odm_set_rf_reg(dm, RF_PATH_A, 0x30, 0x78000, 0x3); /*Select RX mode*/
odm_set_rf_reg(dm, RF_PATH_A, 0x31, 0xfffff, 0x3F7FF); /*Set Table data*/
odm_set_rf_reg(dm, RF_PATH_A, 0x32, 0xfffff, 0xC26BF); /*Disable TXIQGEN in RX mode*/
/* Path_B */
odm_set_rf_reg(dm, RF_PATH_B, 0x30, 0x78000, 0x3); /*Select RX mode*/
odm_set_rf_reg(dm, RF_PATH_B, 0x31, 0xfffff, 0x3F7FF); /*Set Table data*/
odm_set_rf_reg(dm, RF_PATH_B, 0x32, 0xfffff, 0xC26BF); /*Disable TXIQGEN in RX mode*/
}
odm_set_rf_reg(dm, RF_PATH_A, 0xef, 0x80000, 0x0); /*RF mode table write disable*/
odm_set_rf_reg(dm, RF_PATH_B, 0xef, 0x80000, 0x0); /*RF mode table write disable*/
if (beam_info->beamformee_su_cnt > 0)
odm_set_bb_reg(dm, 0x80c, MASKBYTE1, 0x33);
else
odm_set_bb_reg(dm, 0x80c, MASKBYTE1, 0x11);
}
void
hal_txbf_jaguar_download_ndpa(
void *dm_void,
u8 idx
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
u8 u1b_tmp = 0, tmp_reg422 = 0, head_page;
u8 bcn_valid_reg = 0, count = 0, dl_bcn_count = 0;
boolean is_send_beacon = false;
u8 tx_page_bndy = LAST_ENTRY_OF_TX_PKT_BUFFER_8812; /*default reseved 1 page for the IC type which is undefined.*/
struct _RT_BEAMFORMING_INFO *beam_info = &dm->beamforming_info;
struct _RT_BEAMFORMEE_ENTRY *p_beam_entry = beam_info->beamformee_entry + idx;
void *adapter = dm->adapter;
#if (DM_ODM_SUPPORT_TYPE == ODM_WIN)
*dm->is_fw_dw_rsvd_page_in_progress = true;
#endif
PHYDM_DBG(dm, DBG_TXBF, "[%s] Start!\n", __func__);
if (idx == 0)
head_page = 0xFE;
else
head_page = 0xFE;
phydm_get_hal_def_var_handler_interface(dm, HAL_DEF_TX_PAGE_BOUNDARY, (u8 *)&tx_page_bndy);
/*Set REG_CR bit 8. DMA beacon by SW.*/
u1b_tmp = odm_read_1byte(dm, REG_CR_8812A + 1);
odm_write_1byte(dm, REG_CR_8812A + 1, (u1b_tmp | BIT(0)));
/*Set FWHW_TXQ_CTRL 0x422[6]=0 to tell Hw the packet is not a real beacon frame.*/
tmp_reg422 = odm_read_1byte(dm, REG_FWHW_TXQ_CTRL_8812A + 2);
odm_write_1byte(dm, REG_FWHW_TXQ_CTRL_8812A + 2, tmp_reg422 & (~BIT(6)));
if (tmp_reg422 & BIT(6)) {
PHYDM_DBG(dm, DBG_TXBF, "SetBeamformDownloadNDPA_8812(): There is an adapter is sending beacon.\n");
is_send_beacon = true;
}
/*TDECTRL[15:8] 0x209[7:0] = 0xF6 Beacon Head for TXDMA*/
odm_write_1byte(dm, REG_TDECTRL_8812A + 1, head_page);
do {
/*Clear beacon valid check bit.*/
bcn_valid_reg = odm_read_1byte(dm, REG_TDECTRL_8812A + 2);
odm_write_1byte(dm, REG_TDECTRL_8812A + 2, (bcn_valid_reg | BIT(0)));
/*download NDPA rsvd page.*/
if (p_beam_entry->beamform_entry_cap & BEAMFORMER_CAP_VHT_SU)
beamforming_send_vht_ndpa_packet(dm, p_beam_entry->mac_addr, p_beam_entry->aid, p_beam_entry->sound_bw, BEACON_QUEUE);
else
beamforming_send_ht_ndpa_packet(dm, p_beam_entry->mac_addr, p_beam_entry->sound_bw, BEACON_QUEUE);
/*check rsvd page download OK.*/
bcn_valid_reg = odm_read_1byte(dm, REG_TDECTRL_8812A + 2);
count = 0;
while (!(bcn_valid_reg & BIT(0)) && count < 20) {
count++;
ODM_delay_ms(10);
bcn_valid_reg = odm_read_1byte(dm, REG_TDECTRL_8812A + 2);
}
dl_bcn_count++;
} while (!(bcn_valid_reg & BIT(0)) && dl_bcn_count < 5);
if (!(bcn_valid_reg & BIT(0))) {
PHYDM_DBG(dm, DBG_TXBF, "%s Download RSVD page failed!\n", __func__);
}
/*TDECTRL[15:8] 0x209[7:0] = 0xF6 Beacon Head for TXDMA*/
odm_write_1byte(dm, REG_TDECTRL_8812A + 1, tx_page_bndy);
/*To make sure that if there exists an adapter which would like to send beacon.*/
/*If exists, the origianl value of 0x422[6] will be 1, we should check this to*/
/*prevent from setting 0x422[6] to 0 after download reserved page, or it will cause*/
/*the beacon cannot be sent by HW.*/
/*2010.06.23. Added by tynli.*/
if (is_send_beacon)
odm_write_1byte(dm, REG_FWHW_TXQ_CTRL_8812A + 2, tmp_reg422);
/*Do not enable HW DMA BCN or it will cause Pcie interface hang by timing issue. 2011.11.24. by tynli.*/
/*Clear CR[8] or beacon packet will not be send to TxBuf anymore.*/
u1b_tmp = odm_read_1byte(dm, REG_CR_8812A + 1);
odm_write_1byte(dm, REG_CR_8812A + 1, (u1b_tmp & (~BIT(0))));
p_beam_entry->beamform_entry_state = BEAMFORMING_ENTRY_STATE_PROGRESSED;
#if (DM_ODM_SUPPORT_TYPE == ODM_WIN)
*dm->is_fw_dw_rsvd_page_in_progress = false;
#endif
}
void
hal_txbf_jaguar_fw_txbf_cmd(
void *dm_void
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
u8 idx, period0 = 0, period1 = 0;
u8 PageNum0 = 0xFF, PageNum1 = 0xFF;
u8 u1_tx_bf_parm[3] = {0};
struct _RT_BEAMFORMING_INFO *beam_info = &dm->beamforming_info;
for (idx = 0; idx < BEAMFORMEE_ENTRY_NUM; idx++) {
/*Modified by David*/
if (beam_info->beamformee_entry[idx].is_used && beam_info->beamformee_entry[idx].beamform_entry_state == BEAMFORMING_ENTRY_STATE_PROGRESSED) {
if (idx == 0) {
if (beam_info->beamformee_entry[idx].is_sound)
PageNum0 = 0xFE;
else
PageNum0 = 0xFF; /*stop sounding*/
period0 = (u8)(beam_info->beamformee_entry[idx].sound_period);
} else if (idx == 1) {
if (beam_info->beamformee_entry[idx].is_sound)
PageNum1 = 0xFE;
else
PageNum1 = 0xFF; /*stop sounding*/
period1 = (u8)(beam_info->beamformee_entry[idx].sound_period);
}
}
}
u1_tx_bf_parm[0] = PageNum0;
u1_tx_bf_parm[1] = PageNum1;
u1_tx_bf_parm[2] = (period1 << 4) | period0;
odm_fill_h2c_cmd(dm, PHYDM_H2C_TXBF, 3, u1_tx_bf_parm);
PHYDM_DBG(dm, DBG_TXBF,
"[%s] PageNum0 = %d period0 = %d, PageNum1 = %d period1 %d\n", __func__, PageNum0, period0, PageNum1, period1);
}
void
hal_txbf_jaguar_enter(
void *dm_void,
u8 bfer_bfee_idx
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
u8 i = 0;
u8 bfer_idx = (bfer_bfee_idx & 0xF0) >> 4;
u8 bfee_idx = (bfer_bfee_idx & 0xF);
u32 csi_param;
struct _RT_BEAMFORMING_INFO *beamforming_info = &dm->beamforming_info;
struct _RT_BEAMFORMEE_ENTRY beamformee_entry;
struct _RT_BEAMFORMER_ENTRY beamformer_entry;
u16 sta_id = 0;
PHYDM_DBG(dm, DBG_TXBF, "[%s]Start!\n", __func__);
hal_txbf_jaguar_rf_mode(dm, beamforming_info);
if (dm->rf_type == RF_2T2R)
odm_set_bb_reg(dm, ODM_REG_CSI_CONTENT_VALUE, MASKDWORD, 0x00000000); /*nc =2*/
else
odm_set_bb_reg(dm, ODM_REG_CSI_CONTENT_VALUE, MASKDWORD, 0x01081008); /*nc =1*/
if ((beamforming_info->beamformer_su_cnt > 0) && (bfer_idx < BEAMFORMER_ENTRY_NUM)) {
beamformer_entry = beamforming_info->beamformer_entry[bfer_idx];
/*Sounding protocol control*/
odm_write_1byte(dm, REG_SND_PTCL_CTRL_8812A, 0xCB);
/*MAC address/Partial AID of Beamformer*/
if (bfer_idx == 0) {
for (i = 0; i < 6 ; i++)
odm_write_1byte(dm, (REG_BFMER0_INFO_8812A + i), beamformer_entry.mac_addr[i]);
/*CSI report use legacy ofdm so don't need to fill P_AID. */
/*platform_efio_write_2byte(adapter, REG_BFMER0_INFO_8812A+6, beamform_entry.P_AID); */
} else {
for (i = 0; i < 6 ; i++)
odm_write_1byte(dm, (REG_BFMER1_INFO_8812A + i), beamformer_entry.mac_addr[i]);
/*CSI report use legacy ofdm so don't need to fill P_AID.*/
/*platform_efio_write_2byte(adapter, REG_BFMER1_INFO_8812A+6, beamform_entry.P_AID);*/
}
/*CSI report parameters of Beamformee*/
if (beamformer_entry.beamform_entry_cap & BEAMFORMEE_CAP_VHT_SU) {
if (dm->rf_type == RF_2T2R)
csi_param = 0x01090109;
else
csi_param = 0x01080108;
} else {
if (dm->rf_type == RF_2T2R)
csi_param = 0x03090309;
else
csi_param = 0x03080308;
}
odm_write_4byte(dm, REG_CSI_RPT_PARAM_BW20_8812A, csi_param);
odm_write_4byte(dm, REG_CSI_RPT_PARAM_BW40_8812A, csi_param);
odm_write_4byte(dm, REG_CSI_RPT_PARAM_BW80_8812A, csi_param);
/*Timeout value for MAC to leave NDP_RX_standby_state (60 us, Test chip) (80 us, MP chip)*/
odm_write_1byte(dm, REG_SND_PTCL_CTRL_8812A + 3, 0x50);
}
if ((beamforming_info->beamformee_su_cnt > 0) && (bfee_idx < BEAMFORMEE_ENTRY_NUM)) {
beamformee_entry = beamforming_info->beamformee_entry[bfee_idx];
if (phydm_acting_determine(dm, phydm_acting_as_ibss))
sta_id = beamformee_entry.mac_id;
else
sta_id = beamformee_entry.p_aid;
/*P_AID of Beamformee & enable NDPA transmission & enable NDPA interrupt*/
if (bfee_idx == 0) {
odm_write_2byte(dm, REG_TXBF_CTRL_8812A, sta_id);
odm_write_1byte(dm, REG_TXBF_CTRL_8812A + 3, odm_read_1byte(dm, REG_TXBF_CTRL_8812A + 3) | BIT(4) | BIT(6) | BIT(7));
} else
odm_write_2byte(dm, REG_TXBF_CTRL_8812A + 2, sta_id | BIT(12) | BIT(14) | BIT(15));
/*CSI report parameters of Beamformee*/
if (bfee_idx == 0) {
/*Get BIT24 & BIT25*/
u8 tmp = odm_read_1byte(dm, REG_BFMEE_SEL_8812A + 3) & 0x3;
odm_write_1byte(dm, REG_BFMEE_SEL_8812A + 3, tmp | 0x60);
odm_write_2byte(dm, REG_BFMEE_SEL_8812A, sta_id | BIT(9));
} else {
/*Set BIT25*/
odm_write_2byte(dm, REG_BFMEE_SEL_8812A + 2, sta_id | 0xE200);
}
phydm_beamforming_notify(dm);
}
}
void
hal_txbf_jaguar_leave(
void *dm_void,
u8 idx
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
struct _RT_BEAMFORMING_INFO *beamforming_info = &dm->beamforming_info;
struct _RT_BEAMFORMER_ENTRY beamformer_entry;
struct _RT_BEAMFORMEE_ENTRY beamformee_entry;
if (idx < BEAMFORMER_ENTRY_NUM) {
beamformer_entry = beamforming_info->beamformer_entry[idx];
beamformee_entry = beamforming_info->beamformee_entry[idx];
} else
return;
PHYDM_DBG(dm, DBG_TXBF, "[%s]Start!, IDx = %d\n", __func__, idx);
/*Clear P_AID of Beamformee*/
/*Clear MAC address of Beamformer*/
/*Clear Associated Bfmee Sel*/
if (beamformer_entry.beamform_entry_cap == BEAMFORMING_CAP_NONE) {
odm_write_1byte(dm, REG_SND_PTCL_CTRL_8812A, 0xC8);
if (idx == 0) {
odm_write_4byte(dm, REG_BFMER0_INFO_8812A, 0);
odm_write_2byte(dm, REG_BFMER0_INFO_8812A + 4, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW20_8812A, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW40_8812A, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW80_8812A, 0);
} else {
odm_write_4byte(dm, REG_BFMER1_INFO_8812A, 0);
odm_write_2byte(dm, REG_BFMER1_INFO_8812A + 4, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW20_8812A, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW40_8812A, 0);
odm_write_2byte(dm, REG_CSI_RPT_PARAM_BW80_8812A, 0);
}
}
if (beamformee_entry.beamform_entry_cap == BEAMFORMING_CAP_NONE) {
hal_txbf_jaguar_rf_mode(dm, beamforming_info);
if (idx == 0) {
odm_write_2byte(dm, REG_TXBF_CTRL_8812A, 0x0);
odm_write_2byte(dm, REG_BFMEE_SEL_8812A, 0);
} else {
odm_write_2byte(dm, REG_TXBF_CTRL_8812A + 2, odm_read_2byte(dm, REG_TXBF_CTRL_8812A + 2) & 0xF000);
odm_write_2byte(dm, REG_BFMEE_SEL_8812A + 2, odm_read_2byte(dm, REG_BFMEE_SEL_8812A + 2) & 0x60);
}
}
}
void
hal_txbf_jaguar_status(
void *dm_void,
u8 idx
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
u16 beam_ctrl_val;
u32 beam_ctrl_reg;
struct _RT_BEAMFORMING_INFO *beam_info = &dm->beamforming_info;
struct _RT_BEAMFORMEE_ENTRY beamform_entry = beam_info->beamformee_entry[idx];
if (phydm_acting_determine(dm, phydm_acting_as_ibss))
beam_ctrl_val = beamform_entry.mac_id;
else
beam_ctrl_val = beamform_entry.p_aid;
if (idx == 0)
beam_ctrl_reg = REG_TXBF_CTRL_8812A;
else {
beam_ctrl_reg = REG_TXBF_CTRL_8812A + 2;
beam_ctrl_val |= BIT(12) | BIT(14) | BIT(15);
}
if ((beamform_entry.beamform_entry_state == BEAMFORMING_ENTRY_STATE_PROGRESSED) && (beam_info->apply_v_matrix == true)) {
if (beamform_entry.sound_bw == CHANNEL_WIDTH_20)
beam_ctrl_val |= BIT(9);
else if (beamform_entry.sound_bw == CHANNEL_WIDTH_40)
beam_ctrl_val |= (BIT(9) | BIT(10));
else if (beamform_entry.sound_bw == CHANNEL_WIDTH_80)
beam_ctrl_val |= (BIT(9) | BIT(10) | BIT(11));
} else
beam_ctrl_val &= ~(BIT(9) | BIT(10) | BIT(11));
PHYDM_DBG(dm, DBG_TXBF, "[%s] beam_ctrl_val = 0x%x!\n", __func__, beam_ctrl_val);
odm_write_2byte(dm, beam_ctrl_reg, beam_ctrl_val);
}
void
hal_txbf_jaguar_fw_txbf(
void *dm_void,
u8 idx
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
struct _RT_BEAMFORMING_INFO *beam_info = &dm->beamforming_info;
struct _RT_BEAMFORMEE_ENTRY *p_beam_entry = beam_info->beamformee_entry + idx;
PHYDM_DBG(dm, DBG_TXBF, "[%s] Start!\n", __func__);
if (p_beam_entry->beamform_entry_state == BEAMFORMING_ENTRY_STATE_PROGRESSING)
hal_txbf_jaguar_download_ndpa(dm, idx);
hal_txbf_jaguar_fw_txbf_cmd(dm);
}
void
hal_txbf_jaguar_patch(
void *dm_void,
u8 operation
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
struct _RT_BEAMFORMING_INFO *beam_info = &dm->beamforming_info;
PHYDM_DBG(dm, DBG_TXBF, "[%s] Start!\n", __func__);
if (beam_info->beamform_cap == BEAMFORMING_CAP_NONE)
return;
#if (DM_ODM_SUPPORT_TYPE == ODM_WIN)
if (operation == SCAN_OPT_BACKUP_BAND0)
odm_write_1byte(dm, REG_SND_PTCL_CTRL_8812A, 0xC8);
else if (operation == SCAN_OPT_RESTORE)
odm_write_1byte(dm, REG_SND_PTCL_CTRL_8812A, 0xCB);
#endif
}
void
hal_txbf_jaguar_clk_8812a(
void *dm_void
)
{
struct dm_struct *dm = (struct dm_struct *)dm_void;
u16 u2btmp;
u8 count = 0, u1btmp;
void *adapter = dm->adapter;
PHYDM_DBG(dm, DBG_TXBF, "[%s] Start!\n", __func__);
if (*(dm->is_scan_in_process)) {
PHYDM_DBG(dm, DBG_TXBF, "[%s] return by Scan\n", __func__);
return;
}
#if DEV_BUS_TYPE == RT_PCI_INTERFACE
/*Stop PCIe TxDMA*/
odm_write_1byte(dm, REG_PCIE_CTRL_REG_8812A + 1, 0xFE);
#endif
/*Stop Usb TxDMA*/
#if (DM_ODM_SUPPORT_TYPE == ODM_WIN)
RT_DISABLE_FUNC((PADAPTER)adapter, DF_TX_BIT);
PlatformReturnAllPendingTxPackets((PADAPTER)adapter);
#else
rtw_write_port_cancel(adapter);
#endif
/*Wait TXFF empty*/
for (count = 0; count < 100; count++) {
u2btmp = odm_read_2byte(dm, REG_TXPKT_EMPTY_8812A);
u2btmp = u2btmp & 0xfff;
if (u2btmp != 0xfff) {
ODM_delay_ms(10);
continue;
} else
break;
}
/*TX pause*/
odm_write_1byte(dm, REG_TXPAUSE_8812A, 0xFF);
/*Wait TX state Machine OK*/
for (count = 0; count < 100; count++) {
if (odm_read_4byte(dm, REG_SCH_TXCMD_8812A) != 0)
continue;
else
break;
}
/*Stop RX DMA path*/
u1btmp = odm_read_1byte(dm, REG_RXDMA_CONTROL_8812A);
odm_write_1byte(dm, REG_RXDMA_CONTROL_8812A, u1btmp | BIT(2));
for (count = 0; count < 100; count++) {
u1btmp = odm_read_1byte(dm, REG_RXDMA_CONTROL_8812A);
if (u1btmp & BIT(1))
break;
else
ODM_delay_ms(10);
}
/*Disable clock*/
odm_write_1byte(dm, REG_SYS_CLKR_8812A + 1, 0xf0);
/*Disable 320M*/
odm_write_1byte(dm, REG_AFE_PLL_CTRL_8812A + 3, 0x8);
/*Enable 320M*/
odm_write_1byte(dm, REG_AFE_PLL_CTRL_8812A + 3, 0xa);
/*Enable clock*/
odm_write_1byte(dm, REG_SYS_CLKR_8812A + 1, 0xfc);
/*Release Tx pause*/
odm_write_1byte(dm, REG_TXPAUSE_8812A, 0);
/*Enable RX DMA path*/
u1btmp = odm_read_1byte(dm, REG_RXDMA_CONTROL_8812A);
odm_write_1byte(dm, REG_RXDMA_CONTROL_8812A, u1btmp & (~BIT(2)));
#if DEV_BUS_TYPE == RT_PCI_INTERFACE
/*Enable PCIe TxDMA*/
odm_write_1byte(dm, REG_PCIE_CTRL_REG_8812A + 1, 0);
#endif
/*Start Usb TxDMA*/
RT_ENABLE_FUNC((PADAPTER)adapter, DF_TX_BIT);
}
#endif
#endif
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