ceph/src/seastar/dpdk/drivers/bus/fslmc/qbman/qbman_sys_decl.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *     * Redistributions of source code must retain the above copyright
   9  *       notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above copyright
  11  *       notice, this list of conditions and the following disclaimer in the
  12  *       documentation and/or other materials provided with the distribution.
  13  *     * Neither the name of Freescale Semiconductor nor the
  14  *       names of its contributors may be used to endorse or promote products
  15  *       derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 #include <compat.h>
  29 #include <fsl_qbman_base.h>
  30
  31 /* Sanity check */
  32 #if (__BYTE_ORDER__ != __ORDER_BIG_ENDIAN__) && \
  33         (__BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__)
  34 #error "Unknown endianness!"
  35 #endif
  36
  37 /* The platform-independent code shouldn't need endianness, except for
  38  * weird/fast-path cases like qbman_result_has_token(), which needs to
  39  * perform a passive and endianness-specific test on a read-only data structure
  40  * very quickly. It's an exception, and this symbol is used for that case.
  41  */
  42 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  43 #define DQRR_TOK_OFFSET 0
  44 #define QBMAN_RESULT_VERB_OFFSET_IN_MEM 24
  45 #define SCN_STATE_OFFSET_IN_MEM 8
  46 #define SCN_RID_OFFSET_IN_MEM 8
  47 #else
  48 #define DQRR_TOK_OFFSET 24
  49 #define QBMAN_RESULT_VERB_OFFSET_IN_MEM 0
  50 #define SCN_STATE_OFFSET_IN_MEM 16
  51 #define SCN_RID_OFFSET_IN_MEM 0
  52 #endif
  53
  54 /* Similarly-named functions */
  55 #define upper32(a) upper_32_bits(a)
  56 #define lower32(a) lower_32_bits(a)
  57
  58         /****************/
  59         /* arch assists */
  60         /****************/
  61 #define dcbz(p) { asm volatile("dc zva, %0" : : "r" (p) : "memory"); }
  62 #define lwsync() { asm volatile("dmb st" : : : "memory"); }
  63 #define dcbf(p) { asm volatile("dc cvac, %0" : : "r"(p) : "memory"); }
  64 #define dccivac(p) { asm volatile("dc civac, %0" : : "r"(p) : "memory"); }
  65 static inline void prefetch_for_load(void *p)
  66 {
  67         asm volatile("prfm pldl1keep, [%0, #64]" : : "r" (p));
  68 }
  69
  70 static inline void prefetch_for_store(void *p)
  71 {
  72         asm volatile("prfm pstl1keep, [%0, #64]" : : "r" (p));
  73 }