/*
 * Copyright (c) 2020-2023, NVIDIA CORPORATION. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <osi_common.h>
#include <osi_core.h>
#include <ivc_core.h>
#include <osi_macsec.h>
#include "eqos_core.h"
#include "eqos_mmc.h"
#include "core_local.h"
#include "../osi/common/common.h"
#include "macsec.h"

/**
 * @brief ivc_handle_ioctl - marshell input argument to handle runtime command
 *
 * @param[in] osi_core: OSI core private data structure.
 * @param[in] data: OSI IOCTL data structure.
 *
 * @note MAC should be init and started. see osi_start_mac()
 *
 * @retval data from PHY register on success
 * @retval -1 on failure
 */
static nve32_t ivc_handle_ioctl(struct osi_core_priv_data *osi_core,
				struct osi_ioctl *data)
{
	nve32_t ret = 0;
	ivc_msg_common_t msg;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = handle_ioctl;
	/* osi_memcpy is treated as void since it is
	 * an internal functin which will be always success
	 */
	(void)osi_memcpy((void *)&msg.data.ioctl_data, (void *)data,
			 sizeof(struct osi_ioctl));

	if (data->cmd == OSI_CMD_CONFIG_PTP) {
		(void)osi_memcpy((void *)&msg.data.ioctl_data.ptp_config,
				 (void *)&osi_core->ptp_config,
				 sizeof(struct osi_ptp_config));
	}

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));

	switch (data->cmd) {
	case OSI_CMD_READ_MMC:
		(void)osi_memcpy((void *)&osi_core->mmc,
				 (void *)&msg.data.mmc_s,
				 sizeof(struct osi_mmc_counters));
		break;

	case OSI_CMD_READ_STATS:
		(void)osi_memcpy((void *)&osi_core->stats,
				 (void *)&msg.data.stats_s,
				 sizeof(struct osi_stats));
		break;

	default:
		(void)osi_memcpy((void *)data,
				 (void *)&msg.data.ioctl_data,
				 sizeof(struct osi_ioctl));
		break;
	}

	return ret;
}

/**
 * @brief ivc_core_init - EQOS MAC, MTL and common DMA Initialization
 *
 * @param[in] osi_core: OSI core private data structure.
 *
 * @retval 0 on success
 * @retval -1 on failure.
 */
static nve32_t ivc_core_init(struct osi_core_priv_data *const osi_core)
{
	ivc_msg_common_t msg;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = core_init;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}


/**
 * @brief ivc_core_deinit - EQOS MAC core deinitialization
 *
 * @param[in] osi_core: OSI core private data structure.
 *
 * @note Required clks and resets has to be enabled
 */
static void ivc_core_deinit(struct osi_core_priv_data *const osi_core)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = core_deinit;

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret < 0) {
		/* handle Error */
	}

}

/**
 * @brief ivc_write_phy_reg - Write to a PHY register through MAC over MDIO bus
 *
 * @param[in] osi_core: OSI core private data structure.
 * @param[in] phyaddr: PHY address (PHY ID) associated with PHY
 * @param[in] phyreg: Register which needs to be write to PHY.
 * @param[in] phydata: Data to write to a PHY register.
 *
 * @note MAC should be init and started. see osi_start_mac()
 *
 * @retval 0 on success
 * @retval -1 on failure.
 */
static nve32_t ivc_write_phy_reg(struct osi_core_priv_data *const osi_core,
				 const nveu32_t phyaddr,
				 const nveu32_t phyreg,
				 const nveu16_t phydata)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = write_phy_reg;
	msg.args.arguments[index++] = phyaddr;
	msg.args.arguments[index++] = phyreg;
	msg.args.arguments[index++] = phydata;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}


/**
 * @brief ivc_read_phy_reg - Read from a PHY register through MAC over MDIO bus
 *
 * @param[in] osi_core: OSI core private data structure.
 * @param[in] phyaddr: PHY address (PHY ID) associated with PHY
 * @param[in] phyreg: Register which needs to be read from PHY.
 *
 * @note MAC should be init and started. see osi_start_mac()
 *
 * @retval data from PHY register on success
 * @retval -1 on failure
 */
static nve32_t ivc_read_phy_reg(struct osi_core_priv_data *const osi_core,
				const nveu32_t phyaddr,
				const nveu32_t phyreg)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = read_phy_reg;
	msg.args.arguments[index++] = phyaddr;
	msg.args.arguments[index++] = phyreg;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}

#ifdef MACSEC_SUPPORT
#ifdef DEBUG_MACSEC
/**
 * @brief ivc_macsec_dbg_events_config - Configure Debug events
 *
 * @param[in] osi_core: OSI core private data structure.
 * @param[in] dbg_buf_config: Config Buffer
 *
 * @retval 0 on success
 * @retval -1 on failure.
 */
static nve32_t ivc_macsec_dbg_events_config(
		struct osi_core_priv_data *const osi_core,
		struct osi_macsec_dbg_buf_config *const dbg_buf_config)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = dbg_events_config_macsec;

	(void)osi_memcpy((void *)&msg.data.dbg_buf_config,
			 (void *)dbg_buf_config,
			 sizeof(struct osi_macsec_dbg_buf_config));

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret != 0) {
		goto done;
	}

	(void)osi_memcpy((void *)dbg_buf_config,
			 (void *)&msg.data.dbg_buf_config,
			 sizeof(struct osi_macsec_dbg_buf_config));
done:
	return ret;
}

/**
 * @brief macsec_dbg_buf_config - Read/Write debug buffers.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] dbg_buf_config: Pointer to debug buffer config data structure.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_dbg_buf_config(
		struct osi_core_priv_data *const osi_core,
		struct osi_macsec_dbg_buf_config *const dbg_buf_config)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = dbg_buf_config_macsec;

	(void)osi_memcpy((void *)&msg.data.dbg_buf_config,
			 (void *)dbg_buf_config,
			 sizeof(struct osi_macsec_dbg_buf_config));

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret != 0) {
		goto done;
	}

	(void)osi_memcpy((void *)dbg_buf_config,
			 (void *) &msg.data.dbg_buf_config,
			 sizeof(struct osi_macsec_dbg_buf_config));
done:
	return ret;
}
#endif /* DEBUG_MACSEC */

/**
 * @brief macsec_read_mmc - To read statitics registers and update structure
 *                          variable
 *
 * Algorithm: Pass register offset and old value to helper function and
 *            update structure.
 *
 * @param[in] osi_core: OSI core private data structure.
 *
 * @note
 * 1) MAC/MACSEC should be init and started.
 */
static void ivc_macsec_read_mmc(struct osi_core_priv_data *const osi_core)
{
	ivc_msg_common_t msg;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = read_mmc_macsec;

	msg.status = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));

	(void)osi_memcpy((void *)&osi_core->macsec_mmc,
			 (void *) &msg.data.macsec_mmc,
			 sizeof(struct osi_macsec_mmc_counters));
	(void)osi_memcpy((void *)&osi_core->macsec_irq_stats,
			 (void *) &msg.data.macsec_irq_stats,
			 sizeof(struct osi_macsec_irq_stats));
}

/**
 * @brief ivc_get_sc_lut_key_index - Macsec get Key_index
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] sci: Secure Channel info.
 * @param[out] key_index: Key table index to program SAK.
 * @param[in] ctlr: Controller instance.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_get_sc_lut_key_index(struct osi_core_priv_data *const osi_core,
			     nveu8_t *sci, nveu32_t *key_index,
			     nveu16_t ctlr)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = macsec_get_sc_lut_key_index;
	(void)osi_memcpy((void *) &msg.data.macsec_cfg.sci,
			 (void *)sci,
			 OSI_SCI_LEN);
	msg.data.macsec_cfg.ctlr = ctlr;

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret == 0) {
		*key_index = msg.data.macsec_cfg.key_index;
	}

	return ret;
}

/**
 * @brief ivc_macsec_config - Mac sec config.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] sc: Secure Channel info.
 * @param[in] enable: enable or disable.
 * @param[in] ctlr: Controller instance.
 * @param[out] kt_idx: Key table index to program SAK.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_config(struct osi_core_priv_data *const osi_core,
			     struct osi_macsec_sc_info *const sc,
			     nveu32_t enable, nveu16_t ctlr,
			     nveu16_t *kt_idx)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = config_macsec;
	(void)osi_memcpy((void *) &msg.data.macsec_cfg.sc_info,
			 (void *)sc,
			 sizeof(struct osi_macsec_sc_info));
	msg.data.macsec_cfg.enable = enable;
	msg.data.macsec_cfg.ctlr = ctlr;
	msg.data.macsec_cfg.kt_idx = *kt_idx;

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret != 0) {
		goto done;
	}

	*kt_idx = msg.data.macsec_cfg.kt_idx;
done:
	return ret;
}

/**
 * @brief ivc_macsec_enable - Enable or disable Macsec.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] enable: Enable or Disable Macsec.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_enable(struct osi_core_priv_data *const osi_core,
			     nveu32_t enable)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = en_macsec;
	msg.args.arguments[index] = enable;
	index++;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}

#ifdef DEBUG_MACSEC
/**
 * @brief ivc_macsec_loopback_config - Loopback configure.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] enable: Enable or disable loopback.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_loopback_config(struct osi_core_priv_data *const osi_core,
				      nveu32_t enable)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = loopback_config_macsec;
	msg.args.arguments[index] = enable;
	index++;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}
#endif /* DEBUG_MACSEC */

#ifdef MACSEC_KEY_PROGRAM
/**
 * @brief ivc_macsec_kt_config - MacSec KT configure.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] kt_config: KT config structure.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_kt_config(struct osi_core_priv_data *const osi_core,
				struct osi_macsec_kt_config *const kt_config)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = kt_config_macsec;
	(void)osi_memcpy((void *) &msg.data.kt_config,
			 (void *)kt_config,
			 sizeof(struct osi_macsec_kt_config));

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret != 0) {
		return ret;
	}

	(void)osi_memcpy((void *)kt_config,
			 (void *)&msg.data.kt_config,
			 sizeof(struct osi_macsec_kt_config));
	return ret;
}
#endif /* MACSEC_KEY_PROGRAM */

/**
 * @brief ivc_macsec_cipher_config - cipher configure.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] cipher: value of cipher.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_cipher_config(struct osi_core_priv_data *const osi_core,
				    nveu32_t cipher)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = cipher_config;
	msg.args.arguments[index] = cipher;
	index++;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}
/**
 * @brief ivc_macsec_lut_config - LUT config.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] lut_config: lut data structure.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_lut_config(struct osi_core_priv_data *const osi_core,
				 struct osi_macsec_lut_config *const lut_config)
{
	ivc_msg_common_t msg;
	nve32_t ret = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = lut_config_macsec;
	(void)osi_memcpy((void *) &msg.data.lut_config,
			 (void *)lut_config,
			 sizeof(struct osi_macsec_lut_config));

	ret = osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
	if (ret != 0) {
		goto done;
	}

	(void)osi_memcpy((void *)lut_config,
			 (void *)&msg.data.lut_config,
			 sizeof(struct osi_macsec_lut_config));
done:
	return ret;
}

/**
 * @brief ivc_macsec_handle_irq - handle macsec irq.
 *
 * @param[in] osi_core: OSI Core private data structure.
 *
 */
static void ivc_macsec_handle_irq(OSI_UNUSED
				    struct osi_core_priv_data *const osi_core)
{
	OSI_CORE_INFO(osi_core->osd, OSI_LOG_ARG_INVALID,
		      "Nothing to handle \n", 0ULL);
}

/**
 * @brief ivc_macsec_deinit - De Initialize.
 *
 * @param[in] osi_core: OSI Core private data structure.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */

static nve32_t ivc_macsec_deinit(struct osi_core_priv_data *const osi_core)
{
	ivc_msg_common_t msg;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = deinit_macsec;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}

/**
 * @brief ivc_macsec_init -Initialize.
 *
 * @param[in] osi_core: OSI Core private data structure.
 * @param[in] mtu: mtu to be set.
 *
 * @retval 0 on Success
 * @retval -1 on Failure
 */
static nve32_t ivc_macsec_init(struct osi_core_priv_data *const osi_core,
			   nveu32_t mtu)
{
	ivc_msg_common_t msg;
	nveu32_t index = 0;

	osi_memset(&msg, 0, sizeof(msg));

	msg.cmd = init_macsec;
	msg.args.arguments[index] = mtu;
	index++;
	msg.args.count = index;

	return osi_core->osd_ops.ivc_send(osi_core, &msg, sizeof(msg));
}

/**
 * @brief ivc_init_macsec_ops - Initialize IVC core operations.
 *
 * @note
 * API Group:
 * - Initialization: Yes
 * - Run time: No
 * - De-initialization: No
 */
void ivc_init_macsec_ops(void *macsecops)
{
	struct osi_macsec_core_ops *ops = (struct osi_macsec_core_ops *) macsecops;

	ops->init = ivc_macsec_init;
	ops->deinit = ivc_macsec_deinit;
	ops->handle_irq = ivc_macsec_handle_irq;
	ops->lut_config = ivc_macsec_lut_config;
#ifdef MACSEC_KEY_PROGRAM
	ops->kt_config = ivc_macsec_kt_config;
#endif /* MACSEC_KEY_PROGRAM */
	ops->cipher_config = ivc_macsec_cipher_config;
	ops->macsec_en = ivc_macsec_enable;
	ops->config = ivc_macsec_config;
	ops->read_mmc = ivc_macsec_read_mmc;
#ifdef DEBUG_MACSEC
	ops->loopback_config = ivc_macsec_loopback_config;
	ops->dbg_events_config = ivc_macsec_dbg_events_config;
	ops->dbg_buf_config = ivc_macsec_dbg_buf_config;
#endif /* DEBUG_MACSEC */
	ops->get_sc_lut_key_index = ivc_get_sc_lut_key_index;
}
#endif

/**
 * @brief vir_ivc_core_deinit - MAC core deinitialization
 *
 * @param[in] osi_core: OSI core private data structure.
 *
 * @note Required clks and resets has to be enabled
 *
 * @retval Return 0
 */
static nve32_t vir_ivc_core_deinit(struct osi_core_priv_data *const osi_core)
{
	ivc_core_deinit(osi_core);
	return 0;
}

/**
 * @brief vir_init_core_ops - core ops initialization
 *
 * @param[in] osi_core: OSI core private data structure.
 *
 * @retval Return 0
 */
static nve32_t vir_ivc_init_core_ops(OSI_UNUSED
				     struct osi_core_priv_data *const osi_core)
{
	/* This API should not do anything as ethernet_server maintain ops
	 * locally
	 */
	return 0;
}

void ivc_interface_init_core_ops(struct if_core_ops *if_ops_p)
{
	if_ops_p->if_core_init = ivc_core_init;
	if_ops_p->if_core_deinit = vir_ivc_core_deinit;
	if_ops_p->if_write_phy_reg = ivc_write_phy_reg;
	if_ops_p->if_read_phy_reg = ivc_read_phy_reg;
	if_ops_p->if_init_core_ops = vir_ivc_init_core_ops;
	if_ops_p->if_handle_ioctl = ivc_handle_ioctl;
}