/*-
 *   BSD LICENSE
 *
 *   Copyright (c) Intel Corporation.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __NVME_IMPL_H__
#define __NVME_IMPL_H__

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <pthread.h>

#include "spdk/nvme_spec.h"

struct spdk_pci_device;

static inline void *
nvme_malloc(const char *tag, size_t size, unsigned align, uint64_t *phys_addr)
{
	void *buf = NULL;
	if (posix_memalign(&buf, align, size)) {
		return NULL;
	}
	*phys_addr = (uint64_t)buf;
	return buf;
}

#define nvme_free(buf)			free(buf)
#define OUTBUF_SIZE 1024
extern char outbuf[OUTBUF_SIZE];
#define nvme_printf(ctrlr, fmt, args...) snprintf(outbuf, OUTBUF_SIZE, fmt, ##args)
#define nvme_get_num_ioq()		8
#define nvme_get_ioq_idx()		0

uint64_t nvme_vtophys(void *buf);
#define NVME_VTOPHYS_ERROR	(0xFFFFFFFFFFFFFFFFULL)

#define nvme_alloc_request(bufp)	\
do					\
	{				\
		if (posix_memalign((void **)(bufp), 64, sizeof(struct nvme_request))) {	\
			*(bufp) = NULL;	\
		}			\
	}				\
	while (0)

#define nvme_dealloc_request(buf)	free(buf)

extern uint64_t g_ut_tsc;
#define nvme_get_tsc()			(g_ut_tsc)
#define nvme_get_tsc_hz()		(1000000)

static inline int
nvme_pci_enumerate(int (*enum_cb)(void *enum_ctx, struct spdk_pci_device *pci_dev), void *enum_ctx)
{
	/* TODO: enumeration is not needed in any unit tests yet, so it's not implemented */
	return -1;
}

#define nvme_pcicfg_read32(handle, var, offset)		do { *(var) = 0xFFFFFFFFu; } while (0)
#define nvme_pcicfg_write32(handle, var, offset)	do { (void)(var); } while (0)

extern struct spdk_nvme_registers g_ut_nvme_regs;

static inline
int nvme_pcicfg_map_bar(void *pci_handle, int bar, int read_only, void **addr)
{
	*addr = &g_ut_nvme_regs;
	return 0;
}

static inline int
nvme_pcicfg_map_bar_write_combine(void *devhandle, uint32_t bar, void **addr)
{
	*addr = &g_ut_nvme_regs;
	return 0;
}

static inline int
nvme_pcicfg_unmap_bar(void *devhandle, uint32_t bar, void *addr)
{
	return 0;
}

static inline void
nvme_pcicfg_get_bar_addr_len(void *devhandle, uint32_t bar, uint64_t *addr, uint64_t *size)
{
	*addr = 0;
	*size = 0;
}

#endif /* __NVME_IMPL_H__ */