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 */ 28 29 #ifndef __ECORE_UTILS_H__ 30 #define __ECORE_UTILS_H__ 31 32 /* dma_addr_t manip */ 33 /* Suppress "right shift count >= width of type" warning when that quantity is 34 * 32-bits rquires the >> 16) >> 16) 35 */ 36 #define PTR_LO(x) ((u32)(((osal_uintptr_t)(x)) & 0xffffffff)) 37 #define PTR_HI(x) ((u32)((((osal_uintptr_t)(x)) >> 16) >> 16)) 38 39 #define DMA_LO(x) ((u32)(((dma_addr_t)(x)) & 0xffffffff)) 40 #define DMA_HI(x) ((u32)(((dma_addr_t)(x)) >> 32)) 41 42 #define DMA_LO_LE(x) OSAL_CPU_TO_LE32(DMA_LO(x)) 43 #define DMA_HI_LE(x) OSAL_CPU_TO_LE32(DMA_HI(x)) 44 45 /* It's assumed that whoever includes this has previously included an hsi 46 * file defining the regpair. 47 */ 48 #define DMA_REGPAIR_LE(x, val) (x).hi = DMA_HI_LE((val)); \ 49 (x).lo = DMA_LO_LE((val)) 50 51 #define HILO_GEN(hi, lo, type) ((((type)(hi)) << 32) + (lo)) 52 #define HILO_DMA(hi, lo) HILO_GEN(hi, lo, dma_addr_t) 53 #define HILO_64(hi, lo) HILO_GEN(hi, lo, u64) 54 #define HILO_DMA_REGPAIR(regpair) (HILO_DMA(regpair.hi, regpair.lo)) 55 #define HILO_64_REGPAIR(regpair) (HILO_64(regpair.hi, regpair.lo)) 56 57 #ifndef USHRT_MAX 58 #define USHRT_MAX ((u16)(~0U)) 59 #endif 60 61 #endif 62