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5fd1486c PJ |
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 | ||
8d9254fc | 5 | Copyright (C) 2015-2020 Free Software Foundation, Inc. |
5fd1486c PJ |
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 | |
33 | extern "C" { | |
34 | #endif | |
35 | ||
36 | #include <stdbool.h> | |
37 | #include <stddef.h> | |
38 | #include <stdint.h> | |
39 | #include "hsa.h" | |
40 | ||
41 | typedef __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 |