// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
 * All rights reserved.
 */

#include "wilc_wlan_if.h"
#include "wilc_wlan.h"
#include "wilc_wlan_cfg.h"
#include "coreconfigurator.h"

enum cfg_cmd_type {
	CFG_BYTE_CMD	= 0,
	CFG_HWORD_CMD	= 1,
	CFG_WORD_CMD	= 2,
	CFG_STR_CMD	= 3,
	CFG_BIN_CMD	= 4
};

struct wilc_mac_cfg {
	int mac_status;
	u8 mac_address[7];
	u8 ip_address[5];
	u8 bssid[7];
	u8 ssid[34];
	u8 firmware_version[129];
	u8 supp_rate[24];
	u8 wep_key[28];
	u8 i_psk[66];
	u8 hw_product_version[33];
	u8 phyversion[17];
	u8 supp_username[21];
	u8 supp_password[64];
	u8 assoc_req[256];
	u8 assoc_rsp[256];
	u8 firmware_info[8];
	u8 scan_result[256];
	u8 scan_result1[256];
};

static struct wilc_mac_cfg g_mac;

static struct wilc_cfg_byte g_cfg_byte[] = {
	{WID_BSS_TYPE, 0},
	{WID_CURRENT_TX_RATE, 0},
	{WID_CURRENT_CHANNEL, 0},
	{WID_PREAMBLE, 0},
	{WID_11G_OPERATING_MODE, 0},
	{WID_STATUS, 0},
	{WID_SCAN_TYPE, 0},
	{WID_KEY_ID, 0},
	{WID_QOS_ENABLE, 0},
	{WID_POWER_MANAGEMENT, 0},
	{WID_11I_MODE, 0},
	{WID_AUTH_TYPE, 0},
	{WID_SITE_SURVEY, 0},
	{WID_LISTEN_INTERVAL, 0},
	{WID_DTIM_PERIOD, 0},
	{WID_ACK_POLICY, 0},
	{WID_BCAST_SSID, 0},
	{WID_REKEY_POLICY, 0},
	{WID_SHORT_SLOT_ALLOWED, 0},
	{WID_START_SCAN_REQ, 0},
	{WID_RSSI, 0},
	{WID_LINKSPEED, 0},
	{WID_AUTO_RX_SENSITIVITY, 0},
	{WID_DATAFLOW_CONTROL, 0},
	{WID_SCAN_FILTER, 0},
	{WID_11N_PROT_MECH, 0},
	{WID_11N_ERP_PROT_TYPE, 0},
	{WID_11N_ENABLE, 0},
	{WID_11N_OPERATING_MODE, 0},
	{WID_11N_OBSS_NONHT_DETECTION, 0},
	{WID_11N_HT_PROT_TYPE, 0},
	{WID_11N_RIFS_PROT_ENABLE, 0},
	{WID_11N_SMPS_MODE, 0},
	{WID_11N_CURRENT_TX_MCS, 0},
	{WID_11N_SHORT_GI_ENABLE, 0},
	{WID_RIFS_MODE, 0},
	{WID_TX_ABORT_CONFIG, 0},
	{WID_11N_IMMEDIATE_BA_ENABLED, 0},
	{WID_11N_TXOP_PROT_DISABLE, 0},
	{WID_NIL, 0}
};

static struct wilc_cfg_hword g_cfg_hword[] = {
	{WID_LINK_LOSS_THRESHOLD, 0},
	{WID_RTS_THRESHOLD, 0},
	{WID_FRAG_THRESHOLD, 0},
	{WID_SHORT_RETRY_LIMIT, 0},
	{WID_LONG_RETRY_LIMIT, 0},
	{WID_BEACON_INTERVAL, 0},
	{WID_RX_SENSE, 0},
	{WID_ACTIVE_SCAN_TIME, 0},
	{WID_PASSIVE_SCAN_TIME, 0},
	{WID_SITE_SURVEY_SCAN_TIME, 0},
	{WID_JOIN_START_TIMEOUT, 0},
	{WID_AUTH_TIMEOUT, 0},
	{WID_ASOC_TIMEOUT, 0},
	{WID_11I_PROTOCOL_TIMEOUT, 0},
	{WID_EAPOL_RESPONSE_TIMEOUT, 0},
	{WID_11N_SIG_QUAL_VAL, 0},
	{WID_CCA_THRESHOLD, 0},
	{WID_NIL, 0}
};

static struct wilc_cfg_word g_cfg_word[] = {
	{WID_FAILED_COUNT, 0},
	{WID_RETRY_COUNT, 0},
	{WID_MULTIPLE_RETRY_COUNT, 0},
	{WID_FRAME_DUPLICATE_COUNT, 0},
	{WID_ACK_FAILURE_COUNT, 0},
	{WID_RECEIVED_FRAGMENT_COUNT, 0},
	{WID_MCAST_RECEIVED_FRAME_COUNT, 0},
	{WID_FCS_ERROR_COUNT, 0},
	{WID_SUCCESS_FRAME_COUNT, 0},
	{WID_TX_FRAGMENT_COUNT, 0},
	{WID_TX_MULTICAST_FRAME_COUNT, 0},
	{WID_RTS_SUCCESS_COUNT, 0},
	{WID_RTS_FAILURE_COUNT, 0},
	{WID_WEP_UNDECRYPTABLE_COUNT, 0},
	{WID_REKEY_PERIOD, 0},
	{WID_REKEY_PACKET_COUNT, 0},
	{WID_HW_RX_COUNT, 0},
	{WID_GET_INACTIVE_TIME, 0},
	{WID_NIL, 0}

};

static struct wilc_cfg_str g_cfg_str[] = {
	{WID_SSID, g_mac.ssid},	/* 33 + 1 bytes */
	{WID_FIRMWARE_VERSION, g_mac.firmware_version},
	{WID_OPERATIONAL_RATE_SET, g_mac.supp_rate},
	{WID_BSSID, g_mac.bssid},	/* 6 bytes */
	{WID_WEP_KEY_VALUE, g_mac.wep_key},	/* 27 bytes */
	{WID_11I_PSK, g_mac.i_psk},	/* 65 bytes */
	{WID_HARDWARE_VERSION, g_mac.hw_product_version},
	{WID_MAC_ADDR, g_mac.mac_address},
	{WID_PHY_VERSION, g_mac.phyversion},
	{WID_SUPP_USERNAME, g_mac.supp_username},
	{WID_SUPP_PASSWORD, g_mac.supp_password},
	{WID_SITE_SURVEY_RESULTS, g_mac.scan_result},
	{WID_SITE_SURVEY_RESULTS, g_mac.scan_result1},
	{WID_ASSOC_REQ_INFO, g_mac.assoc_req},
	{WID_ASSOC_RES_INFO, g_mac.assoc_rsp},
	{WID_FIRMWARE_INFO, g_mac.firmware_version},
	{WID_IP_ADDRESS, g_mac.ip_address},
	{WID_NIL, NULL}
};

/********************************************
 *
 *      Configuration Functions
 *
 ********************************************/

static int wilc_wlan_cfg_set_byte(u8 *frame, u32 offset, u16 id, u8 val8)
{
	u8 *buf;

	if ((offset + 4) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];

	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);
	buf[2] = 1;
	buf[3] = 0;
	buf[4] = val8;
	return 5;
}

static int wilc_wlan_cfg_set_hword(u8 *frame, u32 offset, u16 id, u16 val16)
{
	u8 *buf;

	if ((offset + 5) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];

	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);
	buf[2] = 2;
	buf[3] = 0;
	buf[4] = (u8)val16;
	buf[5] = (u8)(val16 >> 8);

	return 6;
}

static int wilc_wlan_cfg_set_word(u8 *frame, u32 offset, u16 id, u32 val32)
{
	u8 *buf;

	if ((offset + 7) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];

	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);
	buf[2] = 4;
	buf[3] = 0;
	buf[4] = (u8)val32;
	buf[5] = (u8)(val32 >> 8);
	buf[6] = (u8)(val32 >> 16);
	buf[7] = (u8)(val32 >> 24);

	return 8;
}

static int wilc_wlan_cfg_set_str(u8 *frame, u32 offset, u16 id, u8 *str,
				 u32 size)
{
	u8 *buf;

	if ((offset + size + 4) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];

	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);
	buf[2] = (u8)size;
	buf[3] = (u8)(size >> 8);

	if (str && size != 0)
		memcpy(&buf[4], str, size);

	return (size + 4);
}

static int wilc_wlan_cfg_set_bin(u8 *frame, u32 offset, u16 id, u8 *b, u32 size)
{
	u8 *buf;
	u32 i;
	u8 checksum = 0;

	if ((offset + size + 5) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];
	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);
	buf[2] = (u8)size;
	buf[3] = (u8)(size >> 8);

	if ((b) && size != 0) {
		memcpy(&buf[4], b, size);
		for (i = 0; i < size; i++)
			checksum += buf[i + 4];
	}

	buf[size + 4] = checksum;

	return (size + 5);
}

/********************************************
 *
 *      Configuration Response Functions
 *
 ********************************************/

#define GET_WID_TYPE(wid)		(((wid) >> 12) & 0x7)
static void wilc_wlan_parse_response_frame(u8 *info, int size)
{
	u16 wid;
	u32 len = 0, i = 0;

	while (size > 0) {
		i = 0;
		wid = info[0] | (info[1] << 8);

		switch (GET_WID_TYPE(wid)) {
		case WID_CHAR:
			do {
				if (g_cfg_byte[i].id == WID_NIL)
					break;

				if (g_cfg_byte[i].id == wid) {
					g_cfg_byte[i].val = info[4];
					break;
				}
				i++;
			} while (1);
			len = 3;
			break;

		case WID_SHORT:
			do {
				if (g_cfg_hword[i].id == WID_NIL)
					break;

				if (g_cfg_hword[i].id == wid) {
					g_cfg_hword[i].val = (info[4] |
							      (info[5] << 8));
					break;
				}
				i++;
			} while (1);
			len = 4;
			break;

		case WID_INT:
			do {
				if (g_cfg_word[i].id == WID_NIL)
					break;

				if (g_cfg_word[i].id == wid) {
					g_cfg_word[i].val = (info[4] |
							     (info[5] << 8) |
							     (info[6] << 16) |
							     (info[7] << 24));
					break;
				}
				i++;
			} while (1);
			len = 6;
			break;

		case WID_STR:
			do {
				if (g_cfg_str[i].id == WID_NIL)
					break;

				if (g_cfg_str[i].id == wid) {
					if (wid == WID_SITE_SURVEY_RESULTS) {
						static int toggle;

						i += toggle;
						toggle ^= 1;
					}
					memcpy(g_cfg_str[i].str, &info[2],
					       (info[2] + 2));
					break;
				}
				i++;
			} while (1);
			len = 2 + info[2];
			break;

		default:
			break;
		}
		size -= (2 + len);
		info += (2 + len);
	}
}

static int wilc_wlan_parse_info_frame(u8 *info, int size)
{
	struct wilc_mac_cfg *pd = &g_mac;
	u32 wid, len;
	int type = WILC_CFG_RSP_STATUS;

	wid = info[0] | (info[1] << 8);

	len = info[2];

	if (len == 1 && wid == WID_STATUS) {
		pd->mac_status = info[3];
		type = WILC_CFG_RSP_STATUS;
	}

	return type;
}

/********************************************
 *
 *      Configuration Exported Functions
 *
 ********************************************/

int wilc_wlan_cfg_set_wid(u8 *frame, u32 offset, u16 id, u8 *buf, int size)
{
	u8 type = (id >> 12) & 0xf;
	int ret = 0;

	switch (type) {
	case CFG_BYTE_CMD:
		if (size >= 1)
			ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);
		break;

	case CFG_HWORD_CMD:
		if (size >= 2)
			ret = wilc_wlan_cfg_set_hword(frame, offset, id,
						      *((u16 *)buf));
		break;

	case CFG_WORD_CMD:
		if (size >= 4)
			ret = wilc_wlan_cfg_set_word(frame, offset, id,
						     *((u32 *)buf));
		break;

	case CFG_STR_CMD:
		ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);
		break;

	case CFG_BIN_CMD:
		ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);
		break;
	}

	return ret;
}

int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)
{
	u8 *buf;

	if ((offset + 2) >= MAX_CFG_FRAME_SIZE)
		return 0;

	buf = &frame[offset];

	buf[0] = (u8)id;
	buf[1] = (u8)(id >> 8);

	return 2;
}

int wilc_wlan_cfg_get_wid_value(u16 wid, u8 *buffer, u32 buffer_size)
{
	u32 type = (wid >> 12) & 0xf;
	int i, ret = 0;

	if (wid == WID_STATUS) {
		*((u32 *)buffer) = g_mac.mac_status;
		return 4;
	}

	i = 0;
	if (type == CFG_BYTE_CMD) {
		do {
			if (g_cfg_byte[i].id == WID_NIL)
				break;

			if (g_cfg_byte[i].id == wid) {
				memcpy(buffer,  &g_cfg_byte[i].val, 1);
				ret = 1;
				break;
			}
			i++;
		} while (1);
	} else if (type == CFG_HWORD_CMD) {
		do {
			if (g_cfg_hword[i].id == WID_NIL)
				break;

			if (g_cfg_hword[i].id == wid) {
				memcpy(buffer,  &g_cfg_hword[i].val, 2);
				ret = 2;
				break;
			}
			i++;
		} while (1);
	} else if (type == CFG_WORD_CMD) {
		do {
			if (g_cfg_word[i].id == WID_NIL)
				break;

			if (g_cfg_word[i].id == wid) {
				memcpy(buffer,  &g_cfg_word[i].val, 4);
				ret = 4;
				break;
			}
			i++;
		} while (1);
	} else if (type == CFG_STR_CMD) {
		do {
			u32 id = g_cfg_str[i].id;

			if (id == WID_NIL)
				break;

			if (id == wid) {
				u32 size = g_cfg_str[i].str[0] |
						(g_cfg_str[i].str[1] << 8);

				if (buffer_size >= size) {
					if (id == WID_SITE_SURVEY_RESULTS) {
						static int toggle;

						i += toggle;
						toggle ^= 1;
					}
					memcpy(buffer,  &g_cfg_str[i].str[2],
					       size);
					ret = size;
				}
				break;
			}
			i++;
		} while (1);
	}

	return ret;
}

int wilc_wlan_cfg_indicate_rx(struct wilc *wilc, u8 *frame, int size,
			      struct wilc_cfg_rsp *rsp)
{
	int ret = 1;
	u8 msg_type;
	u8 msg_id;

	msg_type = frame[0];
	msg_id = frame[1];      /* seq no */
	frame += 4;
	size -= 4;

	/*
	 * The valid types of response messages are
	 * 'R' (Response),
	 * 'I' (Information), and
	 * 'N' (Network Information)
	 */

	switch (msg_type) {
	case 'R':
		wilc_wlan_parse_response_frame(frame, size);
		rsp->type = WILC_CFG_RSP;
		rsp->seq_no = msg_id;
		break;

	case 'I':
		rsp->type = wilc_wlan_parse_info_frame(frame, size);
		rsp->seq_no = msg_id;
		/*call host interface info parse as well*/
		wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);
		break;

	case 'N':
		wilc_network_info_received(wilc, frame - 4, size + 4);
		rsp->type = 0;
		break;

	case 'S':
		wilc_scan_complete_received(wilc, frame - 4, size + 4);
		break;

	default:
		rsp->type = 0;
		rsp->seq_no = msg_id;
		ret = 0;
		break;
	}

	return ret;
}

int wilc_wlan_cfg_init(void)
{
	memset((void *)&g_mac, 0, sizeof(struct wilc_mac_cfg));
	return 1;
}