1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright(c) 2019-2020 Realtek Corporation
3 */
4
5 #include "debug.h"
6 #include "efuse.h"
7 #include "mac.h"
8 #include "reg.h"
9
10 #define EF_FV_OFSET 0x5ea
11 #define EF_CV_MASK GENMASK(7, 4)
12 #define EF_CV_INV 15
13
14 enum rtw89_efuse_bank {
15 RTW89_EFUSE_BANK_WIFI,
16 RTW89_EFUSE_BANK_BT,
17 };
18
rtw89_switch_efuse_bank(struct rtw89_dev * rtwdev,enum rtw89_efuse_bank bank)19 static int rtw89_switch_efuse_bank(struct rtw89_dev *rtwdev,
20 enum rtw89_efuse_bank bank)
21 {
22 u8 val;
23
24 if (rtwdev->chip->chip_id != RTL8852A)
25 return 0;
26
27 val = rtw89_read32_mask(rtwdev, R_AX_EFUSE_CTRL_1,
28 B_AX_EF_CELL_SEL_MASK);
29 if (bank == val)
30 return 0;
31
32 rtw89_write32_mask(rtwdev, R_AX_EFUSE_CTRL_1, B_AX_EF_CELL_SEL_MASK,
33 bank);
34
35 val = rtw89_read32_mask(rtwdev, R_AX_EFUSE_CTRL_1,
36 B_AX_EF_CELL_SEL_MASK);
37 if (bank == val)
38 return 0;
39
40 return -EBUSY;
41 }
42
rtw89_enable_otp_burst_mode(struct rtw89_dev * rtwdev,bool en)43 static void rtw89_enable_otp_burst_mode(struct rtw89_dev *rtwdev, bool en)
44 {
45 if (en)
46 rtw89_write32_set(rtwdev, R_AX_EFUSE_CTRL_1_V1, B_AX_EF_BURST);
47 else
48 rtw89_write32_clr(rtwdev, R_AX_EFUSE_CTRL_1_V1, B_AX_EF_BURST);
49 }
50
rtw89_enable_efuse_pwr_cut_ddv(struct rtw89_dev * rtwdev)51 static void rtw89_enable_efuse_pwr_cut_ddv(struct rtw89_dev *rtwdev)
52 {
53 enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id;
54 struct rtw89_hal *hal = &rtwdev->hal;
55
56 if (chip_id == RTL8852A)
57 return;
58
59 rtw89_write8_set(rtwdev, R_AX_PMC_DBG_CTRL2, B_AX_SYSON_DIS_PMCR_AX_WRMSK);
60 rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B14);
61
62 fsleep(1000);
63
64 rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B15);
65 rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_ISO_EB2CORE);
66 if (chip_id == RTL8852B && hal->cv == CHIP_CAV)
67 rtw89_enable_otp_burst_mode(rtwdev, true);
68 }
69
rtw89_disable_efuse_pwr_cut_ddv(struct rtw89_dev * rtwdev)70 static void rtw89_disable_efuse_pwr_cut_ddv(struct rtw89_dev *rtwdev)
71 {
72 enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id;
73 struct rtw89_hal *hal = &rtwdev->hal;
74
75 if (chip_id == RTL8852A)
76 return;
77
78 if (chip_id == RTL8852B && hal->cv == CHIP_CAV)
79 rtw89_enable_otp_burst_mode(rtwdev, false);
80
81 rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_ISO_EB2CORE);
82 rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B15);
83
84 fsleep(1000);
85
86 rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B14);
87 rtw89_write8_clr(rtwdev, R_AX_PMC_DBG_CTRL2, B_AX_SYSON_DIS_PMCR_AX_WRMSK);
88 }
89
rtw89_dump_physical_efuse_map_ddv(struct rtw89_dev * rtwdev,u8 * map,u32 dump_addr,u32 dump_size)90 static int rtw89_dump_physical_efuse_map_ddv(struct rtw89_dev *rtwdev, u8 *map,
91 u32 dump_addr, u32 dump_size)
92 {
93 u32 efuse_ctl;
94 u32 addr;
95 int ret;
96
97 rtw89_enable_efuse_pwr_cut_ddv(rtwdev);
98
99 for (addr = dump_addr; addr < dump_addr + dump_size; addr++) {
100 efuse_ctl = u32_encode_bits(addr, B_AX_EF_ADDR_MASK);
101 rtw89_write32(rtwdev, R_AX_EFUSE_CTRL, efuse_ctl & ~B_AX_EF_RDY);
102
103 ret = read_poll_timeout_atomic(rtw89_read32, efuse_ctl,
104 efuse_ctl & B_AX_EF_RDY, 1, 1000000,
105 true, rtwdev, R_AX_EFUSE_CTRL);
106 if (ret)
107 return -EBUSY;
108
109 *map++ = (u8)(efuse_ctl & 0xff);
110 }
111
112 rtw89_disable_efuse_pwr_cut_ddv(rtwdev);
113
114 return 0;
115 }
116
rtw89_cnv_efuse_state_ax(struct rtw89_dev * rtwdev,bool idle)117 int rtw89_cnv_efuse_state_ax(struct rtw89_dev *rtwdev, bool idle)
118 {
119 return 0;
120 }
121
rtw89_dump_physical_efuse_map_dav(struct rtw89_dev * rtwdev,u8 * map,u32 dump_addr,u32 dump_size)122 static int rtw89_dump_physical_efuse_map_dav(struct rtw89_dev *rtwdev, u8 *map,
123 u32 dump_addr, u32 dump_size)
124 {
125 u32 addr;
126 u8 val8;
127 int err;
128 int ret;
129
130 for (addr = dump_addr; addr < dump_addr + dump_size; addr++) {
131 ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, 0x40, FULL_BIT_MASK);
132 if (ret)
133 return ret;
134 ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_LOW_ADDR,
135 addr & 0xff, XTAL_SI_LOW_ADDR_MASK);
136 if (ret)
137 return ret;
138 ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, addr >> 8,
139 XTAL_SI_HIGH_ADDR_MASK);
140 if (ret)
141 return ret;
142 ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, 0,
143 XTAL_SI_MODE_SEL_MASK);
144 if (ret)
145 return ret;
146
147 ret = read_poll_timeout_atomic(rtw89_mac_read_xtal_si, err,
148 !err && (val8 & XTAL_SI_RDY),
149 1, 10000, false,
150 rtwdev, XTAL_SI_CTRL, &val8);
151 if (ret) {
152 rtw89_warn(rtwdev, "failed to read dav efuse\n");
153 return ret;
154 }
155
156 ret = rtw89_mac_read_xtal_si(rtwdev, XTAL_SI_READ_VAL, &val8);
157 if (ret)
158 return ret;
159 *map++ = val8;
160 }
161
162 return 0;
163 }
164
rtw89_dump_physical_efuse_map(struct rtw89_dev * rtwdev,u8 * map,u32 dump_addr,u32 dump_size,bool dav)165 static int rtw89_dump_physical_efuse_map(struct rtw89_dev *rtwdev, u8 *map,
166 u32 dump_addr, u32 dump_size, bool dav)
167 {
168 int ret;
169
170 if (!map || dump_size == 0)
171 return 0;
172
173 rtw89_switch_efuse_bank(rtwdev, RTW89_EFUSE_BANK_WIFI);
174
175 if (dav) {
176 ret = rtw89_dump_physical_efuse_map_dav(rtwdev, map, dump_addr, dump_size);
177 if (ret)
178 return ret;
179 } else {
180 ret = rtw89_dump_physical_efuse_map_ddv(rtwdev, map, dump_addr, dump_size);
181 if (ret)
182 return ret;
183 }
184
185 return 0;
186 }
187
188 #define invalid_efuse_header(hdr1, hdr2) \
189 ((hdr1) == 0xff || (hdr2) == 0xff)
190 #define invalid_efuse_content(word_en, i) \
191 (((word_en) & BIT(i)) != 0x0)
192 #define get_efuse_blk_idx(hdr1, hdr2) \
193 ((((hdr2) & 0xf0) >> 4) | (((hdr1) & 0x0f) << 4))
194 #define block_idx_to_logical_idx(blk_idx, i) \
195 (((blk_idx) << 3) + ((i) << 1))
rtw89_dump_logical_efuse_map(struct rtw89_dev * rtwdev,u8 * phy_map,u8 * log_map)196 static int rtw89_dump_logical_efuse_map(struct rtw89_dev *rtwdev, u8 *phy_map,
197 u8 *log_map)
198 {
199 u32 physical_size = rtwdev->chip->physical_efuse_size;
200 u32 logical_size = rtwdev->chip->logical_efuse_size;
201 u8 sec_ctrl_size = rtwdev->chip->sec_ctrl_efuse_size;
202 u32 phy_idx = sec_ctrl_size;
203 u32 log_idx;
204 u8 hdr1, hdr2;
205 u8 blk_idx;
206 u8 word_en;
207 int i;
208
209 if (!phy_map)
210 return 0;
211
212 while (phy_idx < physical_size - sec_ctrl_size) {
213 hdr1 = phy_map[phy_idx];
214 hdr2 = phy_map[phy_idx + 1];
215 if (invalid_efuse_header(hdr1, hdr2))
216 break;
217
218 blk_idx = get_efuse_blk_idx(hdr1, hdr2);
219 word_en = hdr2 & 0xf;
220 phy_idx += 2;
221
222 for (i = 0; i < 4; i++) {
223 if (invalid_efuse_content(word_en, i))
224 continue;
225
226 log_idx = block_idx_to_logical_idx(blk_idx, i);
227 if (phy_idx + 1 > physical_size - sec_ctrl_size - 1 ||
228 log_idx + 1 > logical_size)
229 return -EINVAL;
230
231 log_map[log_idx] = phy_map[phy_idx];
232 log_map[log_idx + 1] = phy_map[phy_idx + 1];
233 phy_idx += 2;
234 }
235 }
236 return 0;
237 }
238
rtw89_parse_efuse_map_ax(struct rtw89_dev * rtwdev)239 int rtw89_parse_efuse_map_ax(struct rtw89_dev *rtwdev)
240 {
241 u32 phy_size = rtwdev->chip->physical_efuse_size;
242 u32 log_size = rtwdev->chip->logical_efuse_size;
243 u32 dav_phy_size = rtwdev->chip->dav_phy_efuse_size;
244 u32 dav_log_size = rtwdev->chip->dav_log_efuse_size;
245 u32 full_log_size = log_size + dav_log_size;
246 u8 *phy_map = NULL;
247 u8 *log_map = NULL;
248 u8 *dav_phy_map = NULL;
249 u8 *dav_log_map = NULL;
250 int ret;
251
252 if (rtw89_read16(rtwdev, R_AX_SYS_WL_EFUSE_CTRL) & B_AX_AUTOLOAD_SUS)
253 rtwdev->efuse.valid = true;
254 else
255 rtw89_warn(rtwdev, "failed to check efuse autoload\n");
256
257 phy_map = kmalloc(phy_size, GFP_KERNEL);
258 log_map = kmalloc(full_log_size, GFP_KERNEL);
259 if (dav_phy_size && dav_log_size) {
260 dav_phy_map = kmalloc(dav_phy_size, GFP_KERNEL);
261 dav_log_map = log_map + log_size;
262 }
263
264 if (!phy_map || !log_map || (dav_phy_size && !dav_phy_map)) {
265 ret = -ENOMEM;
266 goto out_free;
267 }
268
269 ret = rtw89_dump_physical_efuse_map(rtwdev, phy_map, 0, phy_size, false);
270 if (ret) {
271 rtw89_warn(rtwdev, "failed to dump efuse physical map\n");
272 goto out_free;
273 }
274 ret = rtw89_dump_physical_efuse_map(rtwdev, dav_phy_map, 0, dav_phy_size, true);
275 if (ret) {
276 rtw89_warn(rtwdev, "failed to dump efuse dav physical map\n");
277 goto out_free;
278 }
279
280 memset(log_map, 0xff, full_log_size);
281 ret = rtw89_dump_logical_efuse_map(rtwdev, phy_map, log_map);
282 if (ret) {
283 rtw89_warn(rtwdev, "failed to dump efuse logical map\n");
284 goto out_free;
285 }
286 ret = rtw89_dump_logical_efuse_map(rtwdev, dav_phy_map, dav_log_map);
287 if (ret) {
288 rtw89_warn(rtwdev, "failed to dump efuse dav logical map\n");
289 goto out_free;
290 }
291
292 rtw89_hex_dump(rtwdev, RTW89_DBG_FW, "log_map: ", log_map, full_log_size);
293
294 ret = rtwdev->chip->ops->read_efuse(rtwdev, log_map, RTW89_EFUSE_BLOCK_IGNORE);
295 if (ret) {
296 rtw89_warn(rtwdev, "failed to read efuse map\n");
297 goto out_free;
298 }
299
300 out_free:
301 kfree(dav_phy_map);
302 kfree(log_map);
303 kfree(phy_map);
304
305 return ret;
306 }
307
rtw89_parse_phycap_map_ax(struct rtw89_dev * rtwdev)308 int rtw89_parse_phycap_map_ax(struct rtw89_dev *rtwdev)
309 {
310 u32 phycap_addr = rtwdev->chip->phycap_addr;
311 u32 phycap_size = rtwdev->chip->phycap_size;
312 u8 *phycap_map = NULL;
313 int ret = 0;
314
315 if (!phycap_size)
316 return 0;
317
318 phycap_map = kmalloc(phycap_size, GFP_KERNEL);
319 if (!phycap_map)
320 return -ENOMEM;
321
322 ret = rtw89_dump_physical_efuse_map(rtwdev, phycap_map,
323 phycap_addr, phycap_size, false);
324 if (ret) {
325 rtw89_warn(rtwdev, "failed to dump phycap map\n");
326 goto out_free;
327 }
328
329 ret = rtwdev->chip->ops->read_phycap(rtwdev, phycap_map);
330 if (ret) {
331 rtw89_warn(rtwdev, "failed to read phycap map\n");
332 goto out_free;
333 }
334
335 out_free:
336 kfree(phycap_map);
337
338 return ret;
339 }
340
rtw89_read_efuse_ver(struct rtw89_dev * rtwdev,u8 * ecv)341 int rtw89_read_efuse_ver(struct rtw89_dev *rtwdev, u8 *ecv)
342 {
343 int ret;
344 u8 val;
345
346 ret = rtw89_dump_physical_efuse_map(rtwdev, &val, EF_FV_OFSET, 1, false);
347 if (ret)
348 return ret;
349
350 *ecv = u8_get_bits(val, EF_CV_MASK);
351 if (*ecv == EF_CV_INV)
352 return -ENOENT;
353
354 return 0;
355 }
356 EXPORT_SYMBOL(rtw89_read_efuse_ver);
357