/*
 * interrupt.h
 *
 *  Created on: Aug 29, 2019
 *      Author: abody
 */

#ifndef CRC_HANDLER_H_
#define CRC_HANDLER_H_

#include <inttypes.h>

#ifdef HAVE_CONFIG
#include "config.h"
#endif	//	HAVE_CONFIG

#include <platform/crc_ll.h>
#include <f4ll_c/dmahelper.h>

#ifdef __cplusplus
extern "C" {
#endif

struct crcslottask_t {
	void * volatile address;
	uint16_t wordCount;
	void (*callback)(void*, uint32_t, uint8_t);
	void *callbackParam;
};

struct crcslotlistitem_t {
	uint16_t                  count;
	struct crcslotlistitem_t *next;
	struct crcslottask_t     *tasks;
};

struct crcstatus_t {
	CRC_TypeDef *crcUnit;
	struct dmainfo_t dmaInfo;
	struct crcslotlistitem_t *activeSlot;
	uint8_t activeTask;
	struct crcslotlistitem_t *firstSlot;
};

void Crc_InitStatus(struct crcstatus_t *status, CRC_TypeDef *crcUnit, DMA_TypeDef *dma, uint32_t stream);

uint8_t Crc_GetActiveTask(struct crcslotlistitem_t **slot_out, struct crcstatus_t volatile *status);

static inline uint8_t Crc_IsSlotQueued(struct crcslotlistitem_t *slot, uint8_t task) {
	return ((struct crcslottask_t volatile)slot->tasks[task]).address != NULL;
}

static inline uint8_t Crc_IsSlotBusy(struct crcslotlistitem_t *slot, uint8_t task) {
	struct crcslottask_t volatile *taskPtr = &slot->tasks[task];
	return taskPtr->callback != NULL || taskPtr->callbackParam != NULL;
}

static inline void Crc_WaitResults(struct crcstatus_t *status, struct crcslotlistitem_t *slot, uint8_t task) {
	while(Crc_IsSlotBusy(slot, task));
}

void Crc_AttachTask(struct crcstatus_t *status, struct crcslotlistitem_t *slot, struct crcslottask_t *tasks, uint8_t taskCount);

uint8_t Crc_Enqueue(struct crcstatus_t *status, struct crcslotlistitem_t *slot, uint8_t task,
		uint8_t *address, uint16_t len, void (*callback)(void*, uint32_t, uint8_t), void* callbackParam);
uint32_t Crc_Compute(struct crcstatus_t *status, struct crcslotlistitem_t *slot, uint8_t task, uint8_t *address, uint16_t len);
void Crc_ComputeAsync(struct crcstatus_t *status, uint8_t slot,
		uint8_t *address, uint16_t len,
		void (*callback)(void*, uint32_t, uint8_t), void* callbackParam);
void Crc_HandleDmaIrq(struct crcstatus_t *status);

#ifdef __cplusplus
}
#endif

#endif /* CRC_HANDLER_H_ */