417 lines · c
1// SPDX-License-Identifier: GPL-2.02/*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 13enum 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 = 419};20 21static 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 30static const struct wilc_cfg_hword g_cfg_hword[] = {31 {WID_NIL, 0}32};33 34static 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 43static const struct wilc_cfg_str g_cfg_str[] = {44 {WID_FIRMWARE_VERSION, NULL},45 {WID_MAC_ADDR, NULL},46 {WID_ASSOC_RES_INFO, NULL},47 {WID_NIL, 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 Functions58 *59 ********************************************/60 61static 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 72static 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 84static 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 96static 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 110static 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 Functions135 *136 ********************************************/137 138static 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 while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)151 i++;152 153 if (cfg->b[i].id == wid)154 cfg->b[i].val = info[4];155 156 len = 3;157 break;158 159 case WID_SHORT:160 while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)161 i++;162 163 if (cfg->hw[i].id == wid)164 cfg->hw[i].val = get_unaligned_le16(&info[4]);165 166 len = 4;167 break;168 169 case WID_INT:170 while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)171 i++;172 173 if (cfg->w[i].id == wid)174 cfg->w[i].val = get_unaligned_le32(&info[4]);175 176 len = 6;177 break;178 179 case WID_STR:180 while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)181 i++;182 183 if (cfg->s[i].id == wid)184 memcpy(cfg->s[i].str, &info[2],185 get_unaligned_le16(&info[2]) + 2);186 187 len = 2 + get_unaligned_le16(&info[2]);188 break;189 190 default:191 break;192 }193 size -= (2 + len);194 info += (2 + len);195 }196}197 198static void wilc_wlan_parse_info_frame(struct wilc *wl, u8 *info)199{200 u32 wid, len;201 202 wid = get_unaligned_le16(info);203 204 len = info[2];205 206 if (len == 1 && wid == WID_STATUS) {207 int i = 0;208 209 while (wl->cfg.b[i].id != WID_NIL &&210 wl->cfg.b[i].id != wid)211 i++;212 213 if (wl->cfg.b[i].id == wid)214 wl->cfg.b[i].val = info[3];215 }216}217 218/********************************************219 *220 * Configuration Exported Functions221 *222 ********************************************/223 224int wilc_wlan_cfg_set_wid(u8 *frame, u32 offset, u16 id, u8 *buf, int size)225{226 u8 type = FIELD_GET(WILC_WID_TYPE, id);227 int ret = 0;228 229 switch (type) {230 case CFG_BYTE_CMD:231 if (size >= 1)232 ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);233 break;234 235 case CFG_HWORD_CMD:236 if (size >= 2)237 ret = wilc_wlan_cfg_set_hword(frame, offset, id,238 *((u16 *)buf));239 break;240 241 case CFG_WORD_CMD:242 if (size >= 4)243 ret = wilc_wlan_cfg_set_word(frame, offset, id,244 *((u32 *)buf));245 break;246 247 case CFG_STR_CMD:248 ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);249 break;250 251 case CFG_BIN_CMD:252 ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);253 break;254 }255 256 return ret;257}258 259int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)260{261 if ((offset + 2) >= WILC_MAX_CFG_FRAME_SIZE)262 return 0;263 264 put_unaligned_le16(id, &frame[offset]);265 266 return 2;267}268 269int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer,270 u32 buffer_size)271{272 u8 type = FIELD_GET(WILC_WID_TYPE, wid);273 int i, ret = 0;274 struct wilc_cfg *cfg = &wl->cfg;275 276 i = 0;277 if (type == CFG_BYTE_CMD) {278 while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)279 i++;280 281 if (cfg->b[i].id == wid) {282 memcpy(buffer, &cfg->b[i].val, 1);283 ret = 1;284 }285 } else if (type == CFG_HWORD_CMD) {286 while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)287 i++;288 289 if (cfg->hw[i].id == wid) {290 memcpy(buffer, &cfg->hw[i].val, 2);291 ret = 2;292 }293 } else if (type == CFG_WORD_CMD) {294 while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)295 i++;296 297 if (cfg->w[i].id == wid) {298 memcpy(buffer, &cfg->w[i].val, 4);299 ret = 4;300 }301 } else if (type == CFG_STR_CMD) {302 while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)303 i++;304 305 if (cfg->s[i].id == wid) {306 u16 size = get_unaligned_le16(cfg->s[i].str);307 308 if (buffer_size >= size) {309 memcpy(buffer, &cfg->s[i].str[2], size);310 ret = size;311 }312 }313 }314 return ret;315}316 317void wilc_wlan_cfg_indicate_rx(struct wilc *wilc, u8 *frame, int size,318 struct wilc_cfg_rsp *rsp)319{320 u8 msg_type;321 u8 msg_id;322 323 msg_type = frame[0];324 msg_id = frame[1]; /* seq no */325 frame += 4;326 size -= 4;327 rsp->type = 0;328 329 switch (msg_type) {330 case WILC_RESP_MSG_TYPE_CONFIG_REPLY:331 wilc_wlan_parse_response_frame(wilc, frame, size);332 rsp->type = WILC_CFG_RSP;333 rsp->seq_no = msg_id;334 break;335 336 case WILC_RESP_MSG_TYPE_STATUS_INFO:337 wilc_wlan_parse_info_frame(wilc, frame);338 rsp->type = WILC_CFG_RSP_STATUS;339 rsp->seq_no = msg_id;340 /* call host interface info parse as well */341 wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);342 break;343 344 case WILC_RESP_MSG_TYPE_NETWORK_INFO:345 wilc_network_info_received(wilc, frame - 4, size + 4);346 break;347 348 case WILC_RESP_MSG_TYPE_SCAN_COMPLETE:349 wilc_scan_complete_received(wilc, frame - 4, size + 4);350 break;351 352 default:353 rsp->seq_no = msg_id;354 break;355 }356}357 358int wilc_wlan_cfg_init(struct wilc *wl)359{360 struct wilc_cfg_str_vals *str_vals;361 int i = 0;362 363 wl->cfg.b = kmemdup(g_cfg_byte, sizeof(g_cfg_byte), GFP_KERNEL);364 if (!wl->cfg.b)365 return -ENOMEM;366 367 wl->cfg.hw = kmemdup(g_cfg_hword, sizeof(g_cfg_hword), GFP_KERNEL);368 if (!wl->cfg.hw)369 goto out_b;370 371 wl->cfg.w = kmemdup(g_cfg_word, sizeof(g_cfg_word), GFP_KERNEL);372 if (!wl->cfg.w)373 goto out_hw;374 375 wl->cfg.s = kmemdup(g_cfg_str, sizeof(g_cfg_str), GFP_KERNEL);376 if (!wl->cfg.s)377 goto out_w;378 379 str_vals = kzalloc(sizeof(*str_vals), GFP_KERNEL);380 if (!str_vals)381 goto out_s;382 383 wl->cfg.str_vals = str_vals;384 /* store the string cfg parameters */385 wl->cfg.s[i].id = WID_FIRMWARE_VERSION;386 wl->cfg.s[i].str = str_vals->firmware_version;387 i++;388 wl->cfg.s[i].id = WID_MAC_ADDR;389 wl->cfg.s[i].str = str_vals->mac_address;390 i++;391 wl->cfg.s[i].id = WID_ASSOC_RES_INFO;392 wl->cfg.s[i].str = str_vals->assoc_rsp;393 i++;394 wl->cfg.s[i].id = WID_NIL;395 wl->cfg.s[i].str = NULL;396 return 0;397 398out_s:399 kfree(wl->cfg.s);400out_w:401 kfree(wl->cfg.w);402out_hw:403 kfree(wl->cfg.hw);404out_b:405 kfree(wl->cfg.b);406 return -ENOMEM;407}408 409void wilc_wlan_cfg_deinit(struct wilc *wl)410{411 kfree(wl->cfg.b);412 kfree(wl->cfg.hw);413 kfree(wl->cfg.w);414 kfree(wl->cfg.s);415 kfree(wl->cfg.str_vals);416}417