phsa-queue-interface.h revision 1.1.1.2
1/* phsa_queue_interface.h -- Definition for a minimalistic generic in-memory 2 representation of a user mode queue to be used with the phsa/gccbrig 3 implementation. 4 5 Copyright (C) 2015-2018 Free Software Foundation, Inc. 6 Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com> 7 for General Processor Tech. 8 9 Permission is hereby granted, free of charge, to any person obtaining a 10 copy of this software and associated documentation files 11 (the "Software"), to deal in the Software without restriction, including 12 without limitation the rights to use, copy, modify, merge, publish, 13 distribute, sublicense, and/or sell copies of the Software, and to 14 permit persons to whom the Software is furnished to do so, subject to 15 the following conditions: 16 17 The above copyright notice and this permission notice shall be included 18 in all copies or substantial portions of the Software. 19 20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 21 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 23 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 24 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 25 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 26 USE OR OTHER DEALINGS IN THE SOFTWARE. 27*/ 28 29#ifndef PHSA_QUEUE_INTERFACE_H 30#define PHSA_QUEUE_INTERFACE_H 31 32#ifdef __cplusplus 33extern "C" { 34#endif 35 36#include <stdbool.h> 37#include <stddef.h> 38#include <stdint.h> 39#include "hsa.h" 40 41typedef __attribute__ ((aligned (64))) struct phsa_queue_s 42{ 43 /* An HSA Architectured Queue object. Must be in the beginning 44 of the struct to enable direct pointer casting between hsa_queue_ 45 and phsa_queue_t. */ 46 hsa_queue_t hsa_queue; 47 48 volatile uint64_t write_index; 49 volatile uint64_t read_index; 50 51 /* True if global mem addresses are 64b. */ 52 uint64_t is_ptr64 : 1; 53 54} phsa_queue_t; 55 56#ifdef __cplusplus 57} 58#endif 59 60#endif 61