ecore_utils.h revision 337517 
1/*
2 * Copyright (c) 2017-2018 Cavium, Inc.
3 * All rights reserved.
4 *
5 *  Redistribution and use in source and binary forms, with or without
6 *  modification, are permitted provided that the following conditions
7 *  are met:
8 *
9 *  1. Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 *  2. Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 *  POSSIBILITY OF SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/11/sys/dev/qlnx/qlnxe/ecore_utils.h 337517 2018-08-09 01:17:35Z davidcs $
28 *
29 */
30
31#ifndef __ECORE_UTILS_H__
32#define __ECORE_UTILS_H__
33
34/* dma_addr_t manip */
35/* Suppress "right shift count >= width of type" warning when that quantity is
36 * 32-bits rquires the >> 16) >> 16)
37 */
38#define PTR_LO(x)		((u32)(((osal_uintptr_t)(x)) & 0xffffffff))
39#define PTR_HI(x)		((u32)((((osal_uintptr_t)(x)) >> 16) >> 16))
40
41#define DMA_LO(x)		((u32)(((dma_addr_t)(x)) & 0xffffffff))
42#define DMA_HI(x)		((u32)(((dma_addr_t)(x)) >> 32))
43
44#define DMA_LO_LE(x)		OSAL_CPU_TO_LE32(DMA_LO(x))
45#define DMA_HI_LE(x)		OSAL_CPU_TO_LE32(DMA_HI(x))
46
47/* It's assumed that whoever includes this has previously included an hsi
48 * file defining the regpair.
49 */
50#define DMA_REGPAIR_LE(x, val)	(x).hi = DMA_HI_LE((val)); \
51				(x).lo = DMA_LO_LE((val))
52
53#define HILO_GEN(hi, lo, type)	((((type)(hi)) << 32) + (lo))
54#define HILO_DMA(hi, lo)	HILO_GEN(hi, lo, dma_addr_t)
55#define HILO_64(hi, lo)		HILO_GEN(hi, lo, u64)
56#define HILO_DMA_REGPAIR(regpair)	(HILO_DMA(regpair.hi, regpair.lo))
57#define HILO_64_REGPAIR(regpair)	(HILO_64(regpair.hi, regpair.lo))
58
59#ifndef USHRT_MAX
60#define USHRT_MAX       ((u16)(~0U))
61#endif
62
63#endif
64