/******************************************************************************
 *
 * Copyright(c) 2016  Realtek Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <wlanfae@realtek.com>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 *****************************************************************************/
#include "halmac_2_platform.h"
#include "halmac_type.h"
#include "halmac_88xx/halmac_api_88xx.h"
#include "halmac_88xx/halmac_88xx_cfg.h"

#include "halmac_88xx/halmac_8822b/halmac_8822b_cfg.h"

static enum halmac_ret_status
halmac_check_platform_api(void *driver_adapter,
			  enum halmac_interface halmac_interface,
			  struct halmac_platform_api *halmac_platform_api)
{
	void *adapter_local = NULL;

	adapter_local = driver_adapter;

	if (!halmac_platform_api)
		return HALMAC_RET_PLATFORM_API_NULL;

	if (halmac_interface == HALMAC_INTERFACE_SDIO) {
		if (!halmac_platform_api->SDIO_CMD52_READ) {
			pr_err("(!halmac_platform_api->SDIO_CMD52_READ)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_READ_8) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_READ_8)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_READ_16) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_READ_16)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_READ_32) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_READ_32)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_READ_N) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_READ_N)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD52_WRITE) {
			pr_err("(!halmac_platform_api->SDIO_CMD52_WRITE)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_WRITE_8) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_WRITE_8)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_WRITE_16) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_WRITE_16)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->SDIO_CMD53_WRITE_32) {
			pr_err("(!halmac_platform_api->SDIO_CMD53_WRITE_32)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
	}

	if (halmac_interface == HALMAC_INTERFACE_USB ||
	    halmac_interface == HALMAC_INTERFACE_PCIE) {
		if (!halmac_platform_api->REG_READ_8) {
			pr_err("(!halmac_platform_api->REG_READ_8)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->REG_READ_16) {
			pr_err("(!halmac_platform_api->REG_READ_16)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->REG_READ_32) {
			pr_err("(!halmac_platform_api->REG_READ_32)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->REG_WRITE_8) {
			pr_err("(!halmac_platform_api->REG_WRITE_8)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->REG_WRITE_16) {
			pr_err("(!halmac_platform_api->REG_WRITE_16)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
		if (!halmac_platform_api->REG_WRITE_32) {
			pr_err("(!halmac_platform_api->REG_WRITE_32)\n");
			return HALMAC_RET_PLATFORM_API_NULL;
		}
	}

	if (!halmac_platform_api->EVENT_INDICATION) {
		pr_err("(!halmac_platform_api->EVENT_INDICATION)\n");
		return HALMAC_RET_PLATFORM_API_NULL;
	}

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"%s ==========>\n", __func__);

	return HALMAC_RET_SUCCESS;
}

static enum halmac_ret_status
halmac_convert_to_sdio_bus_offset(u32 *halmac_offset)
{
	switch ((*halmac_offset) & 0xFFFF0000) {
	case WLAN_IOREG_OFFSET:
		*halmac_offset = (HALMAC_SDIO_CMD_ADDR_MAC_REG << 13) |
				 (*halmac_offset & HALMAC_WLAN_MAC_REG_MSK);
		break;
	case SDIO_LOCAL_OFFSET:
		*halmac_offset = (HALMAC_SDIO_CMD_ADDR_SDIO_REG << 13) |
				 (*halmac_offset & HALMAC_SDIO_LOCAL_MSK);
		break;
	default:
		*halmac_offset = 0xFFFFFFFF;
		return HALMAC_RET_CONVERT_SDIO_OFFSET_FAIL;
	}

	return HALMAC_RET_SUCCESS;
}

static u8
platform_reg_read_8_sdio(void *driver_adapter,
			 struct halmac_platform_api *halmac_platform_api,
			 u32 offset)
{
	u8 value8;
	u32 halmac_offset = offset;
	enum halmac_ret_status status = HALMAC_RET_SUCCESS;

	if ((halmac_offset & 0xFFFF0000) == 0)
		halmac_offset |= WLAN_IOREG_OFFSET;

	status = halmac_convert_to_sdio_bus_offset(&halmac_offset);
	if (status != HALMAC_RET_SUCCESS) {
		pr_err("%s error = %x\n", __func__, status);
		return status;
	}

	value8 = halmac_platform_api->SDIO_CMD52_READ(driver_adapter,
						      halmac_offset);

	return value8;
}

static enum halmac_ret_status
platform_reg_write_8_sdio(void *driver_adapter,
			  struct halmac_platform_api *halmac_platform_api,
			  u32 offset, u8 data)
{
	enum halmac_ret_status status = HALMAC_RET_SUCCESS;
	u32 halmac_offset = offset;

	if ((halmac_offset & 0xFFFF0000) == 0)
		halmac_offset |= WLAN_IOREG_OFFSET;

	status = halmac_convert_to_sdio_bus_offset(&halmac_offset);

	if (status != HALMAC_RET_SUCCESS) {
		pr_err("halmac_reg_write_8_sdio_88xx error = %x\n", status);
		return status;
	}
	halmac_platform_api->SDIO_CMD52_WRITE(driver_adapter, halmac_offset,
					      data);

	return HALMAC_RET_SUCCESS;
}

static enum halmac_ret_status
halmac_get_chip_info(void *driver_adapter,
		     struct halmac_platform_api *halmac_platform_api,
		     enum halmac_interface halmac_interface,
		     struct halmac_adapter *halmac_adapter)
{
	struct halmac_api *halmac_api = (struct halmac_api *)NULL;
	u8 chip_id, chip_version;
	u32 polling_count;

	halmac_api = (struct halmac_api *)halmac_adapter->halmac_api;

	/* Get Chip_id and Chip_version */
	if (halmac_adapter->halmac_interface == HALMAC_INTERFACE_SDIO) {
		platform_reg_write_8_sdio(
			driver_adapter, halmac_platform_api, REG_SDIO_HSUS_CTRL,
			platform_reg_read_8_sdio(driver_adapter,
						 halmac_platform_api,
						 REG_SDIO_HSUS_CTRL) &
				~(BIT(0)));

		polling_count = 10000;
		while (!(platform_reg_read_8_sdio(driver_adapter,
						  halmac_platform_api,
						  REG_SDIO_HSUS_CTRL) &
			 0x02)) {
			polling_count--;
			if (polling_count == 0)
				return HALMAC_RET_SDIO_LEAVE_SUSPEND_FAIL;
		}

		chip_id = platform_reg_read_8_sdio(
			driver_adapter, halmac_platform_api, REG_SYS_CFG2);
		chip_version = platform_reg_read_8_sdio(driver_adapter,
							halmac_platform_api,
							REG_SYS_CFG1 + 1) >>
			       4;
	} else {
		chip_id = halmac_platform_api->REG_READ_8(driver_adapter,
							  REG_SYS_CFG2);
		chip_version = halmac_platform_api->REG_READ_8(
				       driver_adapter, REG_SYS_CFG1 + 1) >>
			       4;
	}

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"[TRACE]Chip id : 0x%X\n", chip_id);
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"[TRACE]Chip version : 0x%X\n", chip_version);

	halmac_adapter->chip_version = (enum halmac_chip_ver)chip_version;

	if (chip_id == HALMAC_CHIP_ID_HW_DEF_8822B)
		halmac_adapter->chip_id = HALMAC_CHIP_ID_8822B;
	else if (chip_id == HALMAC_CHIP_ID_HW_DEF_8821C)
		halmac_adapter->chip_id = HALMAC_CHIP_ID_8821C;
	else if (chip_id == HALMAC_CHIP_ID_HW_DEF_8814B)
		halmac_adapter->chip_id = HALMAC_CHIP_ID_8814B;
	else if (chip_id == HALMAC_CHIP_ID_HW_DEF_8197F)
		halmac_adapter->chip_id = HALMAC_CHIP_ID_8197F;
	else
		halmac_adapter->chip_id = HALMAC_CHIP_ID_UNDEFINE;

	if (halmac_adapter->chip_id == HALMAC_CHIP_ID_UNDEFINE)
		return HALMAC_RET_CHIP_NOT_SUPPORT;

	return HALMAC_RET_SUCCESS;
}

/**
 * halmac_init_adapter() - init halmac_adapter
 * @driver_adapter : the adapter of caller
 * @halmac_platform_api : the platform APIs which is used in halmac APIs
 * @halmac_interface : bus interface
 * @pp_halmac_adapter : the adapter of halmac
 * @pp_halmac_api : the function pointer of APIs, caller shall call APIs by
 *                 function pointer
 * Author : KaiYuan Chang / Ivan Lin
 * Return : enum halmac_ret_status
 * More details of status code can be found in prototype document
 */
enum halmac_ret_status
halmac_init_adapter(void *driver_adapter,
		    struct halmac_platform_api *halmac_platform_api,
		    enum halmac_interface halmac_interface,
		    struct halmac_adapter **pp_halmac_adapter,
		    struct halmac_api **pp_halmac_api)
{
	struct halmac_adapter *halmac_adapter = (struct halmac_adapter *)NULL;
	enum halmac_ret_status status = HALMAC_RET_SUCCESS;

	union {
		u32 i;
		u8 x[4];
	} ENDIAN_CHECK = {0x01000000};

	status = halmac_check_platform_api(driver_adapter, halmac_interface,
					   halmac_platform_api);
	if (status != HALMAC_RET_SUCCESS)
		return status;
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			HALMAC_SVN_VER "\n");
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"HALMAC_MAJOR_VER = %x\n", HALMAC_MAJOR_VER);
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"HALMAC_PROTOTYPE_VER = %x\n", HALMAC_PROTOTYPE_VER);
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"HALMAC_MINOR_VER = %x\n", HALMAC_MINOR_VER);
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"HALMAC_PATCH_VER = %x\n", HALMAC_PATCH_VER);

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"halmac_init_adapter_88xx ==========>\n");

	/* Check endian setting - Little endian : 1, Big endian : 0*/
	if (ENDIAN_CHECK.x[0] == HALMAC_SYSTEM_ENDIAN) {
		pr_err("Endian setting Err!!\n");
		return HALMAC_RET_ENDIAN_ERR;
	}

	halmac_adapter = kzalloc(sizeof(*halmac_adapter), GFP_KERNEL);
	if (!halmac_adapter) {
		/* out of memory */
		return HALMAC_RET_MALLOC_FAIL;
	}

	/* return halmac adapter address to caller */
	*pp_halmac_adapter = halmac_adapter;

	/* Record caller info */
	halmac_adapter->halmac_platform_api = halmac_platform_api;
	halmac_adapter->driver_adapter = driver_adapter;
	halmac_interface = halmac_interface == HALMAC_INTERFACE_AXI ?
				   HALMAC_INTERFACE_PCIE :
				   halmac_interface;
	halmac_adapter->halmac_interface = halmac_interface;

	spin_lock_init(&halmac_adapter->efuse_lock);
	spin_lock_init(&halmac_adapter->h2c_seq_lock);

	/*Get Chip*/
	if (halmac_get_chip_info(driver_adapter, halmac_platform_api,
				 halmac_interface,
				 halmac_adapter) != HALMAC_RET_SUCCESS) {
		pr_err("HALMAC_RET_CHIP_NOT_SUPPORT\n");
		return HALMAC_RET_CHIP_NOT_SUPPORT;
	}

	/* Assign function pointer to halmac API */
	halmac_init_adapter_para_88xx(halmac_adapter);
	status = halmac_mount_api_88xx(halmac_adapter);

	/* Return halmac API function pointer */
	*pp_halmac_api = (struct halmac_api *)halmac_adapter->halmac_api;

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"halmac_init_adapter_88xx <==========\n");

	return status;
}

/**
 * halmac_halt_api() - stop halmac_api action
 * @halmac_adapter : the adapter of halmac
 * Author : Ivan Lin
 * Return : enum halmac_ret_status
 * More details of status code can be found in prototype document
 */
enum halmac_ret_status halmac_halt_api(struct halmac_adapter *halmac_adapter)
{
	void *driver_adapter = NULL;
	struct halmac_platform_api *halmac_platform_api =
		(struct halmac_platform_api *)NULL;

	if (halmac_adapter_validate(halmac_adapter) != HALMAC_RET_SUCCESS)
		return HALMAC_RET_ADAPTER_INVALID;

	driver_adapter = halmac_adapter->driver_adapter;
	halmac_platform_api = halmac_adapter->halmac_platform_api;

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"%s ==========>\n", __func__);
	halmac_adapter->halmac_state.api_state = HALMAC_API_STATE_HALT;
	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"%s ==========>\n", __func__);
	return HALMAC_RET_SUCCESS;
}

/**
 * halmac_deinit_adapter() - deinit halmac adapter
 * @halmac_adapter : the adapter of halmac
 * Author : KaiYuan Chang / Ivan Lin
 * Return : enum halmac_ret_status
 * More details of status code can be found in prototype document
 */
enum halmac_ret_status
halmac_deinit_adapter(struct halmac_adapter *halmac_adapter)
{
	void *driver_adapter = NULL;

	if (halmac_adapter_validate(halmac_adapter) != HALMAC_RET_SUCCESS)
		return HALMAC_RET_ADAPTER_INVALID;

	driver_adapter = halmac_adapter->driver_adapter;

	HALMAC_RT_TRACE(driver_adapter, HALMAC_MSG_INIT, DBG_DMESG,
			"[TRACE]halmac_deinit_adapter_88xx ==========>\n");

	kfree(halmac_adapter->hal_efuse_map);
	halmac_adapter->hal_efuse_map = (u8 *)NULL;

	kfree(halmac_adapter->halmac_state.psd_set.data);
	halmac_adapter->halmac_state.psd_set.data = (u8 *)NULL;

	kfree(halmac_adapter->halmac_api);
	halmac_adapter->halmac_api = NULL;

	halmac_adapter->hal_adapter_backup = NULL;
	kfree(halmac_adapter);

	return HALMAC_RET_SUCCESS;
}

/**
 * halmac_get_version() - get HALMAC version
 * @version : return version of major, prototype and minor information
 * Author : KaiYuan Chang / Ivan Lin
 * Return : enum halmac_ret_status
 * More details of status code can be found in prototype document
 */
enum halmac_ret_status halmac_get_version(struct halmac_ver *version)
{
	version->major_ver = (u8)HALMAC_MAJOR_VER;
	version->prototype_ver = (u8)HALMAC_PROTOTYPE_VER;
	version->minor_ver = (u8)HALMAC_MINOR_VER;

	return HALMAC_RET_SUCCESS;
}