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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/* Copyright(c) 2018-2019 Realtek Corporation
3 */
4
5#include "main.h"
6#include "util.h"
7#include "reg.h"
8
9bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target)
10{
11 u32 cnt;
12
13 for (cnt = 0; cnt < 1000; cnt++) {
14 if (rtw_read32_mask(rtwdev, addr, mask) == target)
15 return true;
16
17 udelay(10);
18 }
19
20 return false;
21}
22EXPORT_SYMBOL(check_hw_ready);
23
24bool ltecoex_read_reg(struct rtw_dev *rtwdev, u16 offset, u32 *val)
25{
26 const struct rtw_chip_info *chip = rtwdev->chip;
27 const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
28
29 if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
30 return false;
31
32 rtw_write32(rtwdev, ltecoex->ctrl, 0x800F0000 | offset);
33 *val = rtw_read32(rtwdev, ltecoex->rdata);
34
35 return true;
36}
37
38bool ltecoex_reg_write(struct rtw_dev *rtwdev, u16 offset, u32 value)
39{
40 const struct rtw_chip_info *chip = rtwdev->chip;
41 const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
42
43 if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
44 return false;
45
46 rtw_write32(rtwdev, ltecoex->wdata, value);
47 rtw_write32(rtwdev, ltecoex->ctrl, 0xC00F0000 | offset);
48
49 return true;
50}
51
52void rtw_restore_reg(struct rtw_dev *rtwdev,
53 struct rtw_backup_info *bckp, u32 num)
54{
55 u8 len;
56 u32 reg;
57 u32 val;
58 int i;
59
60 for (i = 0; i < num; i++, bckp++) {
61 len = bckp->len;
62 reg = bckp->reg;
63 val = bckp->val;
64
65 switch (len) {
66 case 1:
67 rtw_write8(rtwdev, reg, (u8)val);
68 break;
69 case 2:
70 rtw_write16(rtwdev, reg, (u16)val);
71 break;
72 case 4:
73 rtw_write32(rtwdev, reg, (u32)val);
74 break;
75 default:
76 break;
77 }
78 }
79}
80EXPORT_SYMBOL(rtw_restore_reg);
81
82void rtw_desc_to_mcsrate(u16 rate, u8 *mcs, u8 *nss)
83{
84 if (rate <= DESC_RATE54M)
85 return;
86
87 if (rate >= DESC_RATEVHT1SS_MCS0 &&
88 rate <= DESC_RATEVHT1SS_MCS9) {
89 *nss = 1;
90 *mcs = rate - DESC_RATEVHT1SS_MCS0;
91 } else if (rate >= DESC_RATEVHT2SS_MCS0 &&
92 rate <= DESC_RATEVHT2SS_MCS9) {
93 *nss = 2;
94 *mcs = rate - DESC_RATEVHT2SS_MCS0;
95 } else if (rate >= DESC_RATEVHT3SS_MCS0 &&
96 rate <= DESC_RATEVHT3SS_MCS9) {
97 *nss = 3;
98 *mcs = rate - DESC_RATEVHT3SS_MCS0;
99 } else if (rate >= DESC_RATEVHT4SS_MCS0 &&
100 rate <= DESC_RATEVHT4SS_MCS9) {
101 *nss = 4;
102 *mcs = rate - DESC_RATEVHT4SS_MCS0;
103 } else if (rate >= DESC_RATEMCS0 &&
104 rate <= DESC_RATEMCS15) {
105 *mcs = rate - DESC_RATEMCS0;
106 }
107}
108
109struct rtw_stas_entry {
110 struct list_head list;
111 struct ieee80211_sta *sta;
112};
113
114struct rtw_iter_stas_data {
115 struct rtw_dev *rtwdev;
116 struct list_head list;
117};
118
119static void rtw_collect_sta_iter(void *data, struct ieee80211_sta *sta)
120{
121 struct rtw_iter_stas_data *iter_stas = data;
122 struct rtw_stas_entry *stas_entry;
123
124 stas_entry = kmalloc(sizeof(*stas_entry), GFP_ATOMIC);
125 if (!stas_entry)
126 return;
127
128 stas_entry->sta = sta;
129 list_add_tail(&stas_entry->list, &iter_stas->list);
130}
131
132void rtw_iterate_stas(struct rtw_dev *rtwdev,
133 void (*iterator)(void *data,
134 struct ieee80211_sta *sta),
135 void *data)
136{
137 struct rtw_iter_stas_data iter_data;
138 struct rtw_stas_entry *sta_entry, *tmp;
139
140 /* &rtwdev->mutex makes sure no stations can be removed between
141 * collecting the stations and iterating over them.
142 */
143 lockdep_assert_held(&rtwdev->mutex);
144
145 iter_data.rtwdev = rtwdev;
146 INIT_LIST_HEAD(&iter_data.list);
147
148 ieee80211_iterate_stations_atomic(rtwdev->hw, rtw_collect_sta_iter,
149 &iter_data);
150
151 list_for_each_entry_safe(sta_entry, tmp, &iter_data.list,
152 list) {
153 list_del_init(&sta_entry->list);
154 iterator(data, sta_entry->sta);
155 kfree(sta_entry);
156 }
157}
158
159struct rtw_vifs_entry {
160 struct list_head list;
161 struct ieee80211_vif *vif;
162};
163
164struct rtw_iter_vifs_data {
165 struct rtw_dev *rtwdev;
166 struct list_head list;
167};
168
169static void rtw_collect_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
170{
171 struct rtw_iter_vifs_data *iter_stas = data;
172 struct rtw_vifs_entry *vifs_entry;
173
174 vifs_entry = kmalloc(sizeof(*vifs_entry), GFP_ATOMIC);
175 if (!vifs_entry)
176 return;
177
178 vifs_entry->vif = vif;
179 list_add_tail(&vifs_entry->list, &iter_stas->list);
180}
181
182void rtw_iterate_vifs(struct rtw_dev *rtwdev,
183 void (*iterator)(void *data, struct ieee80211_vif *vif),
184 void *data)
185{
186 struct rtw_iter_vifs_data iter_data;
187 struct rtw_vifs_entry *vif_entry, *tmp;
188
189 /* &rtwdev->mutex makes sure no interfaces can be removed between
190 * collecting the interfaces and iterating over them.
191 */
192 lockdep_assert_held(&rtwdev->mutex);
193
194 iter_data.rtwdev = rtwdev;
195 INIT_LIST_HEAD(&iter_data.list);
196
197 ieee80211_iterate_active_interfaces_atomic(rtwdev->hw,
198 IEEE80211_IFACE_ITER_NORMAL,
199 rtw_collect_vif_iter, &iter_data);
200
201 list_for_each_entry_safe(vif_entry, tmp, &iter_data.list,
202 list) {
203 list_del_init(&vif_entry->list);
204 iterator(data, vif_entry->vif);
205 kfree(vif_entry);
206 }
207}
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/* Copyright(c) 2018-2019 Realtek Corporation
3 */
4
5#include "main.h"
6#include "util.h"
7#include "reg.h"
8
9bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target)
10{
11 u32 cnt;
12
13 for (cnt = 0; cnt < 1000; cnt++) {
14 if (rtw_read32_mask(rtwdev, addr, mask) == target)
15 return true;
16
17 udelay(10);
18 }
19
20 return false;
21}
22
23bool ltecoex_read_reg(struct rtw_dev *rtwdev, u16 offset, u32 *val)
24{
25 if (!check_hw_ready(rtwdev, LTECOEX_ACCESS_CTRL, LTECOEX_READY, 1))
26 return false;
27
28 rtw_write32(rtwdev, LTECOEX_ACCESS_CTRL, 0x800F0000 | offset);
29 *val = rtw_read32(rtwdev, LTECOEX_READ_DATA);
30
31 return true;
32}
33
34bool ltecoex_reg_write(struct rtw_dev *rtwdev, u16 offset, u32 value)
35{
36 if (!check_hw_ready(rtwdev, LTECOEX_ACCESS_CTRL, LTECOEX_READY, 1))
37 return false;
38
39 rtw_write32(rtwdev, LTECOEX_WRITE_DATA, value);
40 rtw_write32(rtwdev, LTECOEX_ACCESS_CTRL, 0xC00F0000 | offset);
41
42 return true;
43}
44
45void rtw_restore_reg(struct rtw_dev *rtwdev,
46 struct rtw_backup_info *bckp, u32 num)
47{
48 u8 len;
49 u32 reg;
50 u32 val;
51 int i;
52
53 for (i = 0; i < num; i++, bckp++) {
54 len = bckp->len;
55 reg = bckp->reg;
56 val = bckp->val;
57
58 switch (len) {
59 case 1:
60 rtw_write8(rtwdev, reg, (u8)val);
61 break;
62 case 2:
63 rtw_write16(rtwdev, reg, (u16)val);
64 break;
65 case 4:
66 rtw_write32(rtwdev, reg, (u32)val);
67 break;
68 default:
69 break;
70 }
71 }
72}