source: trunk/kernel/kern/cluster_info.h @ 560

Last change on this file since 560 was 560, checked in by nicolas.van.phan@…, 3 years ago

Remove y_max in kernel init barriers

File size: 4.8 KB
Line 
1/*
2 * cluster_info.h - An array in cluster descriptor describing the whole mesh
3 *
4 * Authors  Nicolas Phan    (2018)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#ifndef _CLUSTER_INFO_H_
25#define _CLUSTER_INFO_H_
26
27#include <hal_kernel_types.h>
28#include <kernel_config.h>
29#include <hard_config.h>
30
31/*
32 * cluster_info[] is an array contained in each cluster descriptor and giving
33 * information about all clusters. It enables each cluster to access various
34 * information about all the other clusters.
35 *
36 * This array is present in the boot_info structured and thus initialized
37 * in boot_info_init(). Then it is copied from the boot_info structure to
38 * each cluster descriptor (cluster_t structure) by each cluster.
39 *
40 * Every entry of cluster_info[] is a bitfield giving various info about
41 * the working state of the cluster, incating whether things work or not.
42 *
43 * In the bitfield, LSBs 0 to 'NB_TOTAL_PROCS - 1' indicate if
44 * the cores work or not.
45 * The MSB indicates if the cluster is active (is not a hole in the mesh)
46 * then the second MSB indicate if it's the IO cluster, etc.
47 */
48
49#define CINFO_ACTIVE    0x8000    // if the current cluster contains cores
50#define CINFO_IS_IO     0x4000    // if the current cluster is the io cluster
51/*
52#define CINFO_RAM_OK    0x2000    // if the current cluster has working RAM
53#define CINFO_XCU_OK    0x1000    // if the current cluster has working XCU
54// A mask with the NB_TOTAL_PROCS least significant bits at 1
55#define CINFO_CORES_MASK ((1 << NB_TOTAL_PROCS) - 1)
56// This mask, when assigned to a cluster_info[] entry, indicates that the cluster
57// is fully functionnal and all of its cores work
58#define CINFO_CLUSTER_OK (CINFO_ACTIVE | CINFO_RAM_OK | CINFO_XCU_OK | CINFO_CORES_MASK)
59*/
60
61/******************************************************************************************
62 * This function indicates if a given cluster is active (contains cores)
63 ******************************************************************************************
64 * @ cluster_info      : The cluster_info[] entry corresponding to the target cluster
65 * @ return -1 if error, =0 if the cluster is empty or 1 if the cluster has at least 1 core
66 *****************************************************************************************/
67int cluster_info_is_active( uint32_t cluster_info );
68
69/******************************************************************************************
70 * This function gives the total number of active clusters (those who have cores, RAM...)
71 ******************************************************************************************
72 * @ cluster_info      : The cluster_info[] entry corresponding to the target cluster
73 * @ return the number of active clusters
74 *****************************************************************************************/
75int cluster_info_nb_actives( uint32_t cluster_info[CONFIG_MAX_CLUSTERS_X][CONFIG_MAX_CLUSTERS_Y] );
76
77/******************************************************************************************
78 * This function indicates if a given cluster is active (has cores) and functionnal (works)
79 ******************************************************************************************
80 * @ cluster_info      : The cluster_info[] entry corresponding to the target cluster
81 * @ return -1 if error, =0 if the cluster is faulty or >0 if the core is working
82 *****************************************************************************************/
83// int cluster_info_cluster_ok( uint16_t cluster_info );
84
85/******************************************************************************************
86 * This function indicates if a specific core is working in the given cluster
87 ******************************************************************************************
88 * @ cluster_info      : The cluster_info[] entry corresponding to the target cluster
89 * @ n                 : The lid of the core of interest
90 * @ return -1 if error, 0 if the core is faulty or >0 if the core is working
91 *****************************************************************************************/
92// int cluster_info_core_ok( uint16_t cluster_info, int n );
93
94#endif
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