1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
4 * All rights reserved.
5 */
6
7 #include <linux/bitfield.h>
8 #include "wlan_if.h"
9 #include "wlan.h"
10 #include "wlan_cfg.h"
11 #include "netdev.h"
12
13 enum cfg_cmd_type {
14 CFG_BYTE_CMD = 0,
15 CFG_HWORD_CMD = 1,
16 CFG_WORD_CMD = 2,
17 CFG_STR_CMD = 3,
18 CFG_BIN_CMD = 4
19 };
20
21 static const struct wilc_cfg_byte g_cfg_byte[] = {
22 {WID_STATUS, 0},
23 {WID_RSSI, 0},
24 {WID_LINKSPEED, 0},
25 {WID_TX_POWER, 0},
26 {WID_WOWLAN_TRIGGER, 0},
27 {WID_NIL, 0}
28 };
29
30 static const struct wilc_cfg_hword g_cfg_hword[] = {
31 {WID_NIL, 0}
32 };
33
34 static const struct wilc_cfg_word g_cfg_word[] = {
35 {WID_FAILED_COUNT, 0},
36 {WID_RECEIVED_FRAGMENT_COUNT, 0},
37 {WID_SUCCESS_FRAME_COUNT, 0},
38 {WID_GET_INACTIVE_TIME, 0},
39 {WID_NIL, 0}
40
41 };
42
43 static const struct wilc_cfg_str g_cfg_str[] = {
44 {WID_FIRMWARE_VERSION, 0, NULL},
45 {WID_MAC_ADDR, 0, NULL},
46 {WID_ASSOC_RES_INFO, 0, NULL},
47 {WID_NIL, 0, NULL}
48 };
49
50 #define WILC_RESP_MSG_TYPE_CONFIG_REPLY 'R'
51 #define WILC_RESP_MSG_TYPE_STATUS_INFO 'I'
52 #define WILC_RESP_MSG_TYPE_NETWORK_INFO 'N'
53 #define WILC_RESP_MSG_TYPE_SCAN_COMPLETE 'S'
54
55 /********************************************
56 *
57 * Configuration Functions
58 *
59 ********************************************/
60
wilc_wlan_cfg_set_byte(u8 * frame,u32 offset,u16 id,u8 val8)61 static int wilc_wlan_cfg_set_byte(u8 *frame, u32 offset, u16 id, u8 val8)
62 {
63 if ((offset + 4) >= WILC_MAX_CFG_FRAME_SIZE)
64 return 0;
65
66 put_unaligned_le16(id, &frame[offset]);
67 put_unaligned_le16(1, &frame[offset + 2]);
68 frame[offset + 4] = val8;
69 return 5;
70 }
71
wilc_wlan_cfg_set_hword(u8 * frame,u32 offset,u16 id,u16 val16)72 static int wilc_wlan_cfg_set_hword(u8 *frame, u32 offset, u16 id, u16 val16)
73 {
74 if ((offset + 5) >= WILC_MAX_CFG_FRAME_SIZE)
75 return 0;
76
77 put_unaligned_le16(id, &frame[offset]);
78 put_unaligned_le16(2, &frame[offset + 2]);
79 put_unaligned_le16(val16, &frame[offset + 4]);
80
81 return 6;
82 }
83
wilc_wlan_cfg_set_word(u8 * frame,u32 offset,u16 id,u32 val32)84 static int wilc_wlan_cfg_set_word(u8 *frame, u32 offset, u16 id, u32 val32)
85 {
86 if ((offset + 7) >= WILC_MAX_CFG_FRAME_SIZE)
87 return 0;
88
89 put_unaligned_le16(id, &frame[offset]);
90 put_unaligned_le16(4, &frame[offset + 2]);
91 put_unaligned_le32(val32, &frame[offset + 4]);
92
93 return 8;
94 }
95
wilc_wlan_cfg_set_str(u8 * frame,u32 offset,u16 id,u8 * str,u32 size)96 static int wilc_wlan_cfg_set_str(u8 *frame, u32 offset, u16 id, u8 *str,
97 u32 size)
98 {
99 if ((offset + size + 4) >= WILC_MAX_CFG_FRAME_SIZE)
100 return 0;
101
102 put_unaligned_le16(id, &frame[offset]);
103 put_unaligned_le16(size, &frame[offset + 2]);
104 if (str && size != 0)
105 memcpy(&frame[offset + 4], str, size);
106
107 return (size + 4);
108 }
109
wilc_wlan_cfg_set_bin(u8 * frame,u32 offset,u16 id,u8 * b,u32 size)110 static int wilc_wlan_cfg_set_bin(u8 *frame, u32 offset, u16 id, u8 *b, u32 size)
111 {
112 u32 i;
113 u8 checksum = 0;
114
115 if ((offset + size + 5) >= WILC_MAX_CFG_FRAME_SIZE)
116 return 0;
117
118 put_unaligned_le16(id, &frame[offset]);
119 put_unaligned_le16(size, &frame[offset + 2]);
120
121 if ((b) && size != 0) {
122 memcpy(&frame[offset + 4], b, size);
123 for (i = 0; i < size; i++)
124 checksum += frame[offset + i + 4];
125 }
126
127 frame[offset + size + 4] = checksum;
128
129 return (size + 5);
130 }
131
132 /********************************************
133 *
134 * Configuration Response Functions
135 *
136 ********************************************/
137
wilc_wlan_parse_response_frame(struct wilc * wl,u8 * info,int size)138 static void wilc_wlan_parse_response_frame(struct wilc *wl, u8 *info, int size)
139 {
140 u16 wid;
141 u32 len = 0, i = 0;
142 struct wilc_cfg *cfg = &wl->cfg;
143
144 while (size > 0) {
145 i = 0;
146 wid = get_unaligned_le16(info);
147
148 switch (FIELD_GET(WILC_WID_TYPE, wid)) {
149 case WID_CHAR:
150 len = 3;
151 if (len + 2 > size)
152 return;
153
154 while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
155 i++;
156
157 if (cfg->b[i].id == wid)
158 cfg->b[i].val = info[4];
159
160 break;
161
162 case WID_SHORT:
163 len = 4;
164 if (len + 2 > size)
165 return;
166
167 while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
168 i++;
169
170 if (cfg->hw[i].id == wid)
171 cfg->hw[i].val = get_unaligned_le16(&info[4]);
172
173 break;
174
175 case WID_INT:
176 len = 6;
177 if (len + 2 > size)
178 return;
179
180 while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
181 i++;
182
183 if (cfg->w[i].id == wid)
184 cfg->w[i].val = get_unaligned_le32(&info[4]);
185
186 break;
187
188 case WID_STR:
189 len = 2 + get_unaligned_le16(&info[2]);
190
191 while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
192 i++;
193
194 if (cfg->s[i].id == wid) {
195 if (len > cfg->s[i].len || (len + 2 > size))
196 return;
197
198 memcpy(cfg->s[i].str, &info[2],
199 len);
200 }
201
202 break;
203
204 default:
205 break;
206 }
207 size -= (2 + len);
208 info += (2 + len);
209 }
210 }
211
wilc_wlan_parse_info_frame(struct wilc * wl,u8 * info)212 static void wilc_wlan_parse_info_frame(struct wilc *wl, u8 *info)
213 {
214 u32 wid, len;
215
216 wid = get_unaligned_le16(info);
217
218 len = info[2];
219
220 if (len == 1 && wid == WID_STATUS) {
221 int i = 0;
222
223 while (wl->cfg.b[i].id != WID_NIL &&
224 wl->cfg.b[i].id != wid)
225 i++;
226
227 if (wl->cfg.b[i].id == wid)
228 wl->cfg.b[i].val = info[3];
229 }
230 }
231
232 /********************************************
233 *
234 * Configuration Exported Functions
235 *
236 ********************************************/
237
wilc_wlan_cfg_set_wid(u8 * frame,u32 offset,u16 id,u8 * buf,int size)238 int wilc_wlan_cfg_set_wid(u8 *frame, u32 offset, u16 id, u8 *buf, int size)
239 {
240 u8 type = FIELD_GET(WILC_WID_TYPE, id);
241 int ret = 0;
242
243 switch (type) {
244 case CFG_BYTE_CMD:
245 if (size >= 1)
246 ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);
247 break;
248
249 case CFG_HWORD_CMD:
250 if (size >= 2)
251 ret = wilc_wlan_cfg_set_hword(frame, offset, id,
252 *((u16 *)buf));
253 break;
254
255 case CFG_WORD_CMD:
256 if (size >= 4)
257 ret = wilc_wlan_cfg_set_word(frame, offset, id,
258 *((u32 *)buf));
259 break;
260
261 case CFG_STR_CMD:
262 ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);
263 break;
264
265 case CFG_BIN_CMD:
266 ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);
267 break;
268 }
269
270 return ret;
271 }
272
wilc_wlan_cfg_get_wid(u8 * frame,u32 offset,u16 id)273 int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)
274 {
275 if ((offset + 2) >= WILC_MAX_CFG_FRAME_SIZE)
276 return 0;
277
278 put_unaligned_le16(id, &frame[offset]);
279
280 return 2;
281 }
282
wilc_wlan_cfg_get_val(struct wilc * wl,u16 wid,u8 * buffer,u32 buffer_size)283 int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer,
284 u32 buffer_size)
285 {
286 u8 type = FIELD_GET(WILC_WID_TYPE, wid);
287 int i, ret = 0;
288 struct wilc_cfg *cfg = &wl->cfg;
289
290 i = 0;
291 if (type == CFG_BYTE_CMD) {
292 while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
293 i++;
294
295 if (cfg->b[i].id == wid) {
296 memcpy(buffer, &cfg->b[i].val, 1);
297 ret = 1;
298 }
299 } else if (type == CFG_HWORD_CMD) {
300 while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
301 i++;
302
303 if (cfg->hw[i].id == wid) {
304 memcpy(buffer, &cfg->hw[i].val, 2);
305 ret = 2;
306 }
307 } else if (type == CFG_WORD_CMD) {
308 while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
309 i++;
310
311 if (cfg->w[i].id == wid) {
312 memcpy(buffer, &cfg->w[i].val, 4);
313 ret = 4;
314 }
315 } else if (type == CFG_STR_CMD) {
316 while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
317 i++;
318
319 if (cfg->s[i].id == wid) {
320 u16 size = get_unaligned_le16(cfg->s[i].str);
321
322 if (buffer_size >= size) {
323 memcpy(buffer, &cfg->s[i].str[2], size);
324 ret = size;
325 }
326 }
327 }
328 return ret;
329 }
330
wilc_wlan_cfg_indicate_rx(struct wilc * wilc,u8 * frame,int size,struct wilc_cfg_rsp * rsp)331 void wilc_wlan_cfg_indicate_rx(struct wilc *wilc, u8 *frame, int size,
332 struct wilc_cfg_rsp *rsp)
333 {
334 u8 msg_type;
335 u8 msg_id;
336
337 msg_type = frame[0];
338 msg_id = frame[1]; /* seq no */
339 frame += 4;
340 size -= 4;
341 rsp->type = 0;
342
343 switch (msg_type) {
344 case WILC_RESP_MSG_TYPE_CONFIG_REPLY:
345 wilc_wlan_parse_response_frame(wilc, frame, size);
346 rsp->type = WILC_CFG_RSP;
347 rsp->seq_no = msg_id;
348 break;
349
350 case WILC_RESP_MSG_TYPE_STATUS_INFO:
351 wilc_wlan_parse_info_frame(wilc, frame);
352 rsp->type = WILC_CFG_RSP_STATUS;
353 rsp->seq_no = msg_id;
354 /* call host interface info parse as well */
355 wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);
356 break;
357
358 case WILC_RESP_MSG_TYPE_NETWORK_INFO:
359 wilc_network_info_received(wilc, frame - 4, size + 4);
360 break;
361
362 case WILC_RESP_MSG_TYPE_SCAN_COMPLETE:
363 wilc_scan_complete_received(wilc, frame - 4, size + 4);
364 break;
365
366 default:
367 rsp->seq_no = msg_id;
368 break;
369 }
370 }
371
wilc_wlan_cfg_init(struct wilc * wl)372 int wilc_wlan_cfg_init(struct wilc *wl)
373 {
374 struct wilc_cfg_str_vals *str_vals;
375 int i = 0;
376
377 wl->cfg.b = kmemdup(g_cfg_byte, sizeof(g_cfg_byte), GFP_KERNEL);
378 if (!wl->cfg.b)
379 return -ENOMEM;
380
381 wl->cfg.hw = kmemdup(g_cfg_hword, sizeof(g_cfg_hword), GFP_KERNEL);
382 if (!wl->cfg.hw)
383 goto out_b;
384
385 wl->cfg.w = kmemdup(g_cfg_word, sizeof(g_cfg_word), GFP_KERNEL);
386 if (!wl->cfg.w)
387 goto out_hw;
388
389 wl->cfg.s = kmemdup(g_cfg_str, sizeof(g_cfg_str), GFP_KERNEL);
390 if (!wl->cfg.s)
391 goto out_w;
392
393 str_vals = kzalloc(sizeof(*str_vals), GFP_KERNEL);
394 if (!str_vals)
395 goto out_s;
396
397 wl->cfg.str_vals = str_vals;
398 /* store the string cfg parameters */
399 wl->cfg.s[i].id = WID_FIRMWARE_VERSION;
400 wl->cfg.s[i].str = str_vals->firmware_version;
401 wl->cfg.s[i].len = sizeof(str_vals->firmware_version);
402 i++;
403 wl->cfg.s[i].id = WID_MAC_ADDR;
404 wl->cfg.s[i].str = str_vals->mac_address;
405 wl->cfg.s[i].len = sizeof(str_vals->mac_address);
406 i++;
407 wl->cfg.s[i].id = WID_ASSOC_RES_INFO;
408 wl->cfg.s[i].str = str_vals->assoc_rsp;
409 wl->cfg.s[i].len = sizeof(str_vals->assoc_rsp);
410 i++;
411 wl->cfg.s[i].id = WID_NIL;
412 wl->cfg.s[i].str = NULL;
413 return 0;
414
415 out_s:
416 kfree(wl->cfg.s);
417 out_w:
418 kfree(wl->cfg.w);
419 out_hw:
420 kfree(wl->cfg.hw);
421 out_b:
422 kfree(wl->cfg.b);
423 return -ENOMEM;
424 }
425
wilc_wlan_cfg_deinit(struct wilc * wl)426 void wilc_wlan_cfg_deinit(struct wilc *wl)
427 {
428 kfree(wl->cfg.b);
429 kfree(wl->cfg.hw);
430 kfree(wl->cfg.w);
431 kfree(wl->cfg.s);
432 kfree(wl->cfg.str_vals);
433 }
434