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 * $FreeBSD$ 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 #endif 60