/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Emulex.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Driver Utility  function prototypes
 */

#ifndef _OCE_UTILS_H_
#define	_OCE_UTILS_H_

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/list.h>

/* logging macro */
#define	MOD_CONFIG	0x0001
#define	MOD_TX		0x0002
#define	MOD_RX		0x0004
#define	MOD_ISR		0x0008

#define	OCE_DEFAULT_LOG_SETTINGS	(CE_WARN	|	\
					((MOD_CONFIG | MOD_TX | MOD_RX) << 16))

#define	oce_log(dev_p, level, module, fmt, arg...) {	\
	if (dev_p) {					\
		if ((dev_p->mod_mask & module) && 	\
		    (dev_p->severity < CE_IGNORE) && 	\
		    ((uint32_t)level >= dev_p->severity)) 	\
			cmn_err(level, "%s[%d]: %s[%d]: " fmt, OCE_MOD_NAME, \
			    dev_p->dev_id, __FILE__, __LINE__, ## arg);	     \
	} else {							\
		cmn_err(level, "%s[%d]: %s[%d]: " fmt, OCE_MOD_NAME,	\
		    0, __FILE__, __LINE__, ## arg);			\
	}								\
}


/* Time related */
#define	OCE_USDELAY(x) drv_usecwait((x))
#define	OCE_MSDELAY(x) OCE_USDELAY((x) * 1000)

/* Misc Macros */
#define	OCE_LOG2(x) (highbit((x)) - 1)
#define	ADDR_LO(addr) (uint32_t)BMASK_32(addr) /* low 32 bits */
#define	ADDR_HI(addr) (uint32_t)BMASK_32((addr >> 32)) /* high 32 bits */
#define	ADDR_64(_HI, _LO) ((uint64_t)(((uint64_t)(_HI) << 32)|(_LO)))
#define	voidptr(x)	(void *)((x))
#define	u32ptr(x)	(uint32_t *)voidptr((x))
#define	ptrtou32(x)	(uint32_t)((uint32_t *)(void *)(x))

#define	PAGE_4K		(0x1UL << 12)
#define	OFFSET_IN_4K_PAGE(addr) ((off_t)((uint64_t)addr & (PAGE_4K - 1)))
#define	OCE_NUM_PAGES(size) howmany(size, PAGE_4K)

#ifdef OCE_DEBUG
#define	OCE_DUMP(buf, len) { \
	int i = 0; \
	uint32_t *p = u32ptr(buf); \
	for (i = 0; i < len/4; i++) \
		cmn_err(CE_CONT, "[%d] 0x%x", i, p[i]); \
}
#endif

/* Utility Functions */

#define	OCE_DW_SWAP(datap, length)	{			\
	int len;						\
	for (len = ((length)/4 - 1); len >= 0; len--) {		\
		*((uint32_t *)(datap) + len) =			\
		    LE_32(*((uint32_t *)(datap) + len));	\
	}							\
}


#ifdef _BIG_ENDIAN
#define	DW_SWAP(_PTR, _LEN) OCE_DW_SWAP(_PTR, _LEN)
#else
#define	DW_SWAP(_PTR, _LEN)
#endif

typedef struct oce_list_entry {
	struct oce_list_entry *next;
	struct oce_list_entry *prev;
}OCE_LIST_NODE_T;

typedef struct {
	OCE_LIST_NODE_T head;
	int32_t nitems;
	kmutex_t list_lock;

}OCE_LIST_T;

/* externs for  list manipulation functions */

void oce_list_create(OCE_LIST_T  *list_hdr, void *arg);
void oce_list_destroy(OCE_LIST_T *list_hdr);
void oce_list_insert_tail(OCE_LIST_T *list_hdr, OCE_LIST_NODE_T *list_node);
void *oce_list_remove_head(OCE_LIST_T  *list_hdr);
void oce_list_remove_node(OCE_LIST_T  *list_hdr, OCE_LIST_NODE_T *list_node);
boolean_t oce_list_is_empty(OCE_LIST_T *list_hdr);
int32_t oce_list_items_avail(OCE_LIST_T *list_hdr);

#define	OCE_LIST_CREATE(_LH, _LCK_PRI)	oce_list_create((_LH), (_LCK_PRI))
#define	OCE_LIST_DESTROY(_LH)		oce_list_destroy((_LH))
#define	OCE_LIST_INSERT_TAIL(_LH, _N)				\
			oce_list_insert_tail((_LH), (void *)(_N))
#define	OCE_LIST_REM_HEAD(_LH)		oce_list_remove_head((_LH))
#define	OCE_LIST_EMPTY(_LH)		oce_list_is_empty((_LH))
#define	OCE_LIST_REMOVE(_LH, _N)				\
			oce_list_remove_node((_LH), (void *)(_N))
#define	OCE_LIST_SIZE(_LH)		oce_list_items_avail((_LH))

#ifdef __cplusplus
}
#endif

#endif /* _OCE_UTILS_H_ */