2 * Copyright (c) 2017-2018 Cavium, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
31 #ifndef __ECORE_UTILS_H__
32 #define __ECORE_UTILS_H__
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)
38 #define PTR_LO(x) ((u32)(((osal_uintptr_t)(x)) & 0xffffffff))
39 #define PTR_HI(x) ((u32)((((osal_uintptr_t)(x)) >> 16) >> 16))
41 #define DMA_LO(x) ((u32)(((dma_addr_t)(x)) & 0xffffffff))
42 #define DMA_HI(x) ((u32)(((dma_addr_t)(x)) >> 32))
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))
47 /* It's assumed that whoever includes this has previously included an hsi
48 * file defining the regpair.
50 #define DMA_REGPAIR_LE(x, val) (x).hi = DMA_HI_LE((val)); \
51 (x).lo = DMA_LO_LE((val))
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))
60 #define USHRT_MAX ((u16)(~0U))