ceph/src/spdk/dpdk/drivers/net/qede/base/ecore_utils.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright (c) 2016 - 2018 Cavium Inc.
   3  * All rights reserved.
   4  * www.cavium.com
   5  */
   6
   7 #ifndef __ECORE_UTILS_H__
   8 #define __ECORE_UTILS_H__
   9
  10 /* dma_addr_t manip */
  11 /* Suppress "right shift count >= width of type" warning when that quantity is
  12  * 32-bits rquires the >> 16) >> 16)
  13  */
  14 #define PTR_LO(x)               ((u32)(((osal_uintptr_t)(x)) & 0xffffffff))
  15 #define PTR_HI(x)               ((u32)((((osal_uintptr_t)(x)) >> 16) >> 16))
  16
  17 #define DMA_LO(x)               ((u32)(((dma_addr_t)(x)) & 0xffffffff))
  18 #define DMA_HI(x)               ((u32)(((dma_addr_t)(x)) >> 32))
  19
  20 #define DMA_LO_LE(x)            OSAL_CPU_TO_LE32(DMA_LO(x))
  21 #define DMA_HI_LE(x)            OSAL_CPU_TO_LE32(DMA_HI(x))
  22
  23 /* It's assumed that whoever includes this has previously included an hsi
  24  * file defining the regpair.
  25  */
  26 #define DMA_REGPAIR_LE(x, val)  (x).hi = DMA_HI_LE((val)); \
  27                                 (x).lo = DMA_LO_LE((val))
  28
  29 #define HILO_GEN(hi, lo, type)  ((((type)(hi)) << 32) + (lo))
  30 #define HILO_DMA(hi, lo)        HILO_GEN(hi, lo, dma_addr_t)
  31 #define HILO_64(hi, lo)         HILO_GEN(hi, lo, u64)
  32 #define HILO_DMA_REGPAIR(regpair)       (HILO_DMA(regpair.hi, regpair.lo))
  33 #define HILO_64_REGPAIR(regpair)        (HILO_64(regpair.hi, regpair.lo))
  34
  35 #endif