/*
 * Copyright © 2014 Advanced Micro Devices, Inc.
 *
 * 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 (including
 * the next paragraph) 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.
 */

#ifndef LIBHSAKMT_H_INCLUDED
#define LIBHSAKMT_H_INCLUDED

#include "hsakmt.h"
#include <pthread.h>
#include <stdint.h>
#include <limits.h>

extern int kfd_fd;
extern unsigned long kfd_open_count;
extern pthread_mutex_t hsakmt_mutex;

#undef HSAKMTAPI
#define HSAKMTAPI __attribute__((visibility ("default")))

/*Avoid pointer-to-int-cast warning*/
#define PORT_VPTR_TO_UINT64(vptr) ((uint64_t)(unsigned long)(vptr))

/*Avoid int-to-pointer-cast warning*/
#define PORT_UINT64_TO_VPTR(v) ((void*)(unsigned long)(v))

#define CHECK_KFD_OPEN() \
	do { if (kfd_open_count == 0) return HSAKMT_STATUS_KERNEL_IO_CHANNEL_NOT_OPENED; } while (0)

#define PAGE_SIZE 4096

#define CHECK_PAGE_MULTIPLE(x) \
	do { if ((uint64_t)PORT_VPTR_TO_UINT64(x) % PAGE_SIZE) return HSAKMT_STATUS_INVALID_PARAMETER; } while(0)

#define PAGE_ALIGN_UP(x) (((uint64_t)(x) + PAGE_SIZE - 1) & ~(uint64_t)(PAGE_SIZE-1))
#define BITMASK(n) (((n) < sizeof(1ULL) * CHAR_BIT ? (1ULL << (n)) : 0) - 1ULL)

/*
 * Even though the toplogy code doesn't limit us to maximum number of nodes,
 * the current HSA spec says the maximum is 8 nodes
 */
#define MAX_NODES 8

HSAKMT_STATUS validate_nodeid(uint32_t nodeid, uint32_t *gpu_id);
HSAKMT_STATUS gpuid_to_nodeid(uint32_t gpu_id, uint32_t* node_id);
uint16_t get_device_id_by_node(HSAuint32 node_id);

extern int kmtIoctl(int fd, unsigned long request, void *arg);

/* Void pointer arithmetic (or remove -Wpointer-arith to allow void pointers arithmetic) */
#define VOID_PTR_ADD32(ptr,n) (void*)((uint32_t*)(ptr) + n)/*ptr + offset*/
#define VOID_PTR_ADD(ptr,n) (void*)((uint8_t*)(ptr) + n)/*ptr + offset*/
#define VOID_PTR_SUB(ptr,n) (void*)((uint8_t*)(ptr) - n)/*ptr - offset*/
#define VOID_PTRS_SUB(ptr1,ptr2) (uint64_t)((uint8_t*)(ptr1) - (uint8_t*)(ptr2)) /*ptr1 - ptr2*/

#endif