60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/*
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* Copyright (c) 2017-2018 Cavium, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __ECORE_UTILS_H__
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#define __ECORE_UTILS_H__
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/* dma_addr_t manip */
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/* Suppress "right shift count >= width of type" warning when that quantity is
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* 32-bits rquires the >> 16) >> 16)
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*/
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#define PTR_LO(x) ((u32)(((osal_uintptr_t)(x)) & 0xffffffff))
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#define PTR_HI(x) ((u32)((((osal_uintptr_t)(x)) >> 16) >> 16))
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#define DMA_LO(x) ((u32)(((dma_addr_t)(x)) & 0xffffffff))
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#define DMA_HI(x) ((u32)(((dma_addr_t)(x)) >> 32))
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#define DMA_LO_LE(x) OSAL_CPU_TO_LE32(DMA_LO(x))
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#define DMA_HI_LE(x) OSAL_CPU_TO_LE32(DMA_HI(x))
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/* It's assumed that whoever includes this has previously included an hsi
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* file defining the regpair.
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*/
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#define DMA_REGPAIR_LE(x, val) (x).hi = DMA_HI_LE((val)); \
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(x).lo = DMA_LO_LE((val))
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#define HILO_GEN(hi, lo, type) ((((type)(hi)) << 32) + (lo))
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#define HILO_DMA(hi, lo) HILO_GEN(hi, lo, dma_addr_t)
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#define HILO_64(hi, lo) HILO_GEN(hi, lo, u64)
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#define HILO_DMA_REGPAIR(regpair) (HILO_DMA(regpair.hi, regpair.lo))
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#define HILO_64_REGPAIR(regpair) (HILO_64(regpair.hi, regpair.lo))
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#endif
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