fwil.c 8.0 KB

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  1. /*
  2. * Copyright (c) 2012 Broadcom Corporation
  3. *
  4. * Permission to use, copy, modify, and/or distribute this software for any
  5. * purpose with or without fee is hereby granted, provided that the above
  6. * copyright notice and this permission notice appear in all copies.
  7. *
  8. * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9. * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10. * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11. * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12. * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13. * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14. * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15. */
  16. /* FWIL is the Firmware Interface Layer. In this module the support functions
  17. * are located to set and get variables to and from the firmware.
  18. */
  19. #include <linux/kernel.h>
  20. #include <linux/netdevice.h>
  21. #include <brcmu_utils.h>
  22. #include <brcmu_wifi.h>
  23. #include "dhd.h"
  24. #include "dhd_bus.h"
  25. #include "dhd_dbg.h"
  26. #include "tracepoint.h"
  27. #include "fwil.h"
  28. #define MAX_HEX_DUMP_LEN 64
  29. static s32
  30. brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
  31. {
  32. struct brcmf_pub *drvr = ifp->drvr;
  33. s32 err;
  34. if (drvr->bus_if->state != BRCMF_BUS_DATA) {
  35. brcmf_err("bus is down. we have nothing to do.\n");
  36. return -EIO;
  37. }
  38. if (data != NULL)
  39. len = min_t(uint, len, BRCMF_DCMD_MAXLEN);
  40. if (set)
  41. err = brcmf_proto_cdc_set_dcmd(drvr, ifp->ifidx, cmd, data,
  42. len);
  43. else
  44. err = brcmf_proto_cdc_query_dcmd(drvr, ifp->ifidx, cmd, data,
  45. len);
  46. if (err >= 0)
  47. err = 0;
  48. else
  49. brcmf_err("Failed err=%d\n", err);
  50. return err;
  51. }
  52. s32
  53. brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
  54. {
  55. s32 err;
  56. mutex_lock(&ifp->drvr->proto_block);
  57. brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
  58. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  59. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  60. err = brcmf_fil_cmd_data(ifp, cmd, data, len, true);
  61. mutex_unlock(&ifp->drvr->proto_block);
  62. return err;
  63. }
  64. s32
  65. brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
  66. {
  67. s32 err;
  68. mutex_lock(&ifp->drvr->proto_block);
  69. err = brcmf_fil_cmd_data(ifp, cmd, data, len, false);
  70. brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
  71. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  72. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  73. mutex_unlock(&ifp->drvr->proto_block);
  74. return err;
  75. }
  76. s32
  77. brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data)
  78. {
  79. s32 err;
  80. __le32 data_le = cpu_to_le32(data);
  81. mutex_lock(&ifp->drvr->proto_block);
  82. brcmf_dbg(FIL, "cmd=%d, value=%d\n", cmd, data);
  83. err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true);
  84. mutex_unlock(&ifp->drvr->proto_block);
  85. return err;
  86. }
  87. s32
  88. brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data)
  89. {
  90. s32 err;
  91. __le32 data_le = cpu_to_le32(*data);
  92. mutex_lock(&ifp->drvr->proto_block);
  93. err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false);
  94. mutex_unlock(&ifp->drvr->proto_block);
  95. *data = le32_to_cpu(data_le);
  96. brcmf_dbg(FIL, "cmd=%d, value=%d\n", cmd, *data);
  97. return err;
  98. }
  99. static u32
  100. brcmf_create_iovar(char *name, char *data, u32 datalen, char *buf, u32 buflen)
  101. {
  102. u32 len;
  103. len = strlen(name) + 1;
  104. if ((len + datalen) > buflen)
  105. return 0;
  106. memcpy(buf, name, len);
  107. /* append data onto the end of the name string */
  108. if (data && datalen)
  109. memcpy(&buf[len], data, datalen);
  110. return len + datalen;
  111. }
  112. s32
  113. brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, void *data,
  114. u32 len)
  115. {
  116. struct brcmf_pub *drvr = ifp->drvr;
  117. s32 err;
  118. u32 buflen;
  119. mutex_lock(&drvr->proto_block);
  120. brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
  121. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  122. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  123. buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
  124. sizeof(drvr->proto_buf));
  125. if (buflen) {
  126. err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
  127. buflen, true);
  128. } else {
  129. err = -EPERM;
  130. brcmf_err("Creating iovar failed\n");
  131. }
  132. mutex_unlock(&drvr->proto_block);
  133. return err;
  134. }
  135. s32
  136. brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data,
  137. u32 len)
  138. {
  139. struct brcmf_pub *drvr = ifp->drvr;
  140. s32 err;
  141. u32 buflen;
  142. mutex_lock(&drvr->proto_block);
  143. buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
  144. sizeof(drvr->proto_buf));
  145. if (buflen) {
  146. err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
  147. buflen, false);
  148. if (err == 0)
  149. memcpy(data, drvr->proto_buf, len);
  150. } else {
  151. err = -EPERM;
  152. brcmf_err("Creating iovar failed\n");
  153. }
  154. brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
  155. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  156. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  157. mutex_unlock(&drvr->proto_block);
  158. return err;
  159. }
  160. s32
  161. brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data)
  162. {
  163. __le32 data_le = cpu_to_le32(data);
  164. return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le));
  165. }
  166. s32
  167. brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data)
  168. {
  169. __le32 data_le = cpu_to_le32(*data);
  170. s32 err;
  171. err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le));
  172. if (err == 0)
  173. *data = le32_to_cpu(data_le);
  174. return err;
  175. }
  176. static u32
  177. brcmf_create_bsscfg(s32 bssidx, char *name, char *data, u32 datalen, char *buf,
  178. u32 buflen)
  179. {
  180. const s8 *prefix = "bsscfg:";
  181. s8 *p;
  182. u32 prefixlen;
  183. u32 namelen;
  184. u32 iolen;
  185. __le32 bssidx_le;
  186. if (bssidx == 0)
  187. return brcmf_create_iovar(name, data, datalen, buf, buflen);
  188. prefixlen = strlen(prefix);
  189. namelen = strlen(name) + 1; /* lengh of iovar name + null */
  190. iolen = prefixlen + namelen + sizeof(bssidx_le) + datalen;
  191. if (buflen < iolen) {
  192. brcmf_err("buffer is too short\n");
  193. return 0;
  194. }
  195. p = buf;
  196. /* copy prefix, no null */
  197. memcpy(p, prefix, prefixlen);
  198. p += prefixlen;
  199. /* copy iovar name including null */
  200. memcpy(p, name, namelen);
  201. p += namelen;
  202. /* bss config index as first data */
  203. bssidx_le = cpu_to_le32(bssidx);
  204. memcpy(p, &bssidx_le, sizeof(bssidx_le));
  205. p += sizeof(bssidx_le);
  206. /* parameter buffer follows */
  207. if (datalen)
  208. memcpy(p, data, datalen);
  209. return iolen;
  210. }
  211. s32
  212. brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name,
  213. void *data, u32 len)
  214. {
  215. struct brcmf_pub *drvr = ifp->drvr;
  216. s32 err;
  217. u32 buflen;
  218. mutex_lock(&drvr->proto_block);
  219. brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
  220. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  221. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  222. buflen = brcmf_create_bsscfg(ifp->bssidx, name, data, len,
  223. drvr->proto_buf, sizeof(drvr->proto_buf));
  224. if (buflen) {
  225. err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
  226. buflen, true);
  227. } else {
  228. err = -EPERM;
  229. brcmf_err("Creating bsscfg failed\n");
  230. }
  231. mutex_unlock(&drvr->proto_block);
  232. return err;
  233. }
  234. s32
  235. brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name,
  236. void *data, u32 len)
  237. {
  238. struct brcmf_pub *drvr = ifp->drvr;
  239. s32 err;
  240. u32 buflen;
  241. mutex_lock(&drvr->proto_block);
  242. buflen = brcmf_create_bsscfg(ifp->bssidx, name, data, len,
  243. drvr->proto_buf, sizeof(drvr->proto_buf));
  244. if (buflen) {
  245. err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
  246. buflen, false);
  247. if (err == 0)
  248. memcpy(data, drvr->proto_buf, len);
  249. } else {
  250. err = -EPERM;
  251. brcmf_err("Creating bsscfg failed\n");
  252. }
  253. brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
  254. brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
  255. min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
  256. mutex_unlock(&drvr->proto_block);
  257. return err;
  258. }
  259. s32
  260. brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data)
  261. {
  262. __le32 data_le = cpu_to_le32(data);
  263. return brcmf_fil_bsscfg_data_set(ifp, name, &data_le,
  264. sizeof(data_le));
  265. }
  266. s32
  267. brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data)
  268. {
  269. __le32 data_le = cpu_to_le32(*data);
  270. s32 err;
  271. err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le,
  272. sizeof(data_le));
  273. if (err == 0)
  274. *data = le32_to_cpu(data_le);
  275. return err;
  276. }