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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#include "main.h"
#include "util.h"
#include "reg.h"
bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target)
{
u32 cnt;
for (cnt = 0; cnt < 1000; cnt++) {
if (rtw_read32_mask(rtwdev, addr, mask) == target)
return true;
udelay(10);
}
return false;
}
EXPORT_SYMBOL(check_hw_ready);
bool ltecoex_read_reg(struct rtw_dev *rtwdev, u16 offset, u32 *val)
{
const struct rtw_chip_info *chip = rtwdev->chip;
const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
return false;
rtw_write32(rtwdev, ltecoex->ctrl, 0x800F0000 | offset);
*val = rtw_read32(rtwdev, ltecoex->rdata);
return true;
}
bool ltecoex_reg_write(struct rtw_dev *rtwdev, u16 offset, u32 value)
{
const struct rtw_chip_info *chip = rtwdev->chip;
const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
return false;
rtw_write32(rtwdev, ltecoex->wdata, value);
rtw_write32(rtwdev, ltecoex->ctrl, 0xC00F0000 | offset);
return true;
}
void rtw_restore_reg(struct rtw_dev *rtwdev,
struct rtw_backup_info *bckp, u32 num)
{
u8 len;
u32 reg;
u32 val;
int i;
for (i = 0; i < num; i++, bckp++) {
len = bckp->len;
reg = bckp->reg;
val = bckp->val;
switch (len) {
case 1:
rtw_write8(rtwdev, reg, (u8)val);
break;
case 2:
rtw_write16(rtwdev, reg, (u16)val);
break;
case 4:
rtw_write32(rtwdev, reg, (u32)val);
break;
default:
break;
}
}
}
EXPORT_SYMBOL(rtw_restore_reg);
void rtw_desc_to_mcsrate(u16 rate, u8 *mcs, u8 *nss)
{
if (rate <= DESC_RATE54M)
return;
if (rate >= DESC_RATEVHT1SS_MCS0 &&
rate <= DESC_RATEVHT1SS_MCS9) {
*nss = 1;
*mcs = rate - DESC_RATEVHT1SS_MCS0;
} else if (rate >= DESC_RATEVHT2SS_MCS0 &&
rate <= DESC_RATEVHT2SS_MCS9) {
*nss = 2;
*mcs = rate - DESC_RATEVHT2SS_MCS0;
} else if (rate >= DESC_RATEVHT3SS_MCS0 &&
rate <= DESC_RATEVHT3SS_MCS9) {
*nss = 3;
*mcs = rate - DESC_RATEVHT3SS_MCS0;
} else if (rate >= DESC_RATEVHT4SS_MCS0 &&
rate <= DESC_RATEVHT4SS_MCS9) {
*nss = 4;
*mcs = rate - DESC_RATEVHT4SS_MCS0;
} else if (rate >= DESC_RATEMCS0 &&
rate <= DESC_RATEMCS15) {
*mcs = rate - DESC_RATEMCS0;
}
}
struct rtw_stas_entry {
struct list_head list;
struct ieee80211_sta *sta;
};
struct rtw_iter_stas_data {
struct rtw_dev *rtwdev;
struct list_head list;
};
static void rtw_collect_sta_iter(void *data, struct ieee80211_sta *sta)
{
struct rtw_iter_stas_data *iter_stas = data;
struct rtw_stas_entry *stas_entry;
stas_entry = kmalloc(sizeof(*stas_entry), GFP_ATOMIC);
if (!stas_entry)
return;
stas_entry->sta = sta;
list_add_tail(&stas_entry->list, &iter_stas->list);
}
void rtw_iterate_stas(struct rtw_dev *rtwdev,
void (*iterator)(void *data,
struct ieee80211_sta *sta),
void *data)
{
struct rtw_iter_stas_data iter_data;
struct rtw_stas_entry *sta_entry, *tmp;
/* &rtwdev->mutex makes sure no stations can be removed between
* collecting the stations and iterating over them.
*/
lockdep_assert_held(&rtwdev->mutex);
iter_data.rtwdev = rtwdev;
INIT_LIST_HEAD(&iter_data.list);
ieee80211_iterate_stations_atomic(rtwdev->hw, rtw_collect_sta_iter,
&iter_data);
list_for_each_entry_safe(sta_entry, tmp, &iter_data.list,
list) {
list_del_init(&sta_entry->list);
iterator(data, sta_entry->sta);
kfree(sta_entry);
}
}
struct rtw_vifs_entry {
struct list_head list;
struct ieee80211_vif *vif;
};
struct rtw_iter_vifs_data {
struct rtw_dev *rtwdev;
struct list_head list;
};
static void rtw_collect_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct rtw_iter_vifs_data *iter_stas = data;
struct rtw_vifs_entry *vifs_entry;
vifs_entry = kmalloc(sizeof(*vifs_entry), GFP_ATOMIC);
if (!vifs_entry)
return;
vifs_entry->vif = vif;
list_add_tail(&vifs_entry->list, &iter_stas->list);
}
void rtw_iterate_vifs(struct rtw_dev *rtwdev,
void (*iterator)(void *data, struct ieee80211_vif *vif),
void *data)
{
struct rtw_iter_vifs_data iter_data;
struct rtw_vifs_entry *vif_entry, *tmp;
/* &rtwdev->mutex makes sure no interfaces can be removed between
* collecting the interfaces and iterating over them.
*/
lockdep_assert_held(&rtwdev->mutex);
iter_data.rtwdev = rtwdev;
INIT_LIST_HEAD(&iter_data.list);
ieee80211_iterate_active_interfaces_atomic(rtwdev->hw,
IEEE80211_IFACE_ITER_NORMAL,
rtw_collect_vif_iter, &iter_data);
list_for_each_entry_safe(vif_entry, tmp, &iter_data.list,
list) {
list_del_init(&vif_entry->list);
iterator(data, vif_entry->vif);
kfree(vif_entry);
}
}
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