[410] | 1 | /* |
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| 2 | * sys_get_config.c - get hardware platform parameters. |
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| 3 | * |
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[625] | 4 | * Author Alain Greiner (2016,2017,2018,2019) |
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[410] | 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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[457] | 24 | #include <hal_kernel_types.h> |
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[410] | 25 | #include <hal_uspace.h> |
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[625] | 26 | #include <hal_vmm.h> |
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[410] | 27 | #include <hal_special.h> |
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| 28 | #include <errno.h> |
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| 29 | #include <core.h> |
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| 30 | #include <thread.h> |
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| 31 | #include <process.h> |
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| 32 | #include <vmm.h> |
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| 33 | #include <printk.h> |
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| 34 | |
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[506] | 35 | #include <syscalls.h> |
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| 36 | |
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[410] | 37 | ////////////////////////////////////// |
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| 38 | int sys_get_config( uint32_t * x_size, |
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| 39 | uint32_t * y_size, |
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| 40 | uint32_t * ncores ) |
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| 41 | { |
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[440] | 42 | error_t error; |
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| 43 | vseg_t * vseg; |
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| 44 | uint32_t k_x_size; |
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| 45 | uint32_t k_y_size; |
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| 46 | uint32_t k_ncores; |
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[410] | 47 | |
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| 48 | thread_t * this = CURRENT_THREAD; |
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| 49 | process_t * process = this->process; |
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| 50 | |
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[625] | 51 | #if (DEBUG_SYS_GET_CONFIG || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 52 | uint64_t tm_start = hal_get_cycles(); |
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| 53 | #endif |
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| 54 | |
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[438] | 55 | #if DEBUG_SYS_GET_CONFIG |
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[435] | 56 | tm_start = hal_get_cycles(); |
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[438] | 57 | if( DEBUG_SYS_GET_CONFIG < tm_start ) |
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[435] | 58 | printk("\n[DBG] %s : thread %x enter / process %x / cycle %d\n", |
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| 59 | __FUNCTION__, this, process->pid, (uint32_t)tm_start ); |
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| 60 | #endif |
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| 61 | |
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[440] | 62 | // check x_size buffer in user space |
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| 63 | error = vmm_get_vseg( process , (intptr_t)x_size , &vseg ); |
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[410] | 64 | |
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| 65 | if( error ) |
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| 66 | { |
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[435] | 67 | |
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[438] | 68 | #if DEBUG_SYSCALLS_ERROR |
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[440] | 69 | printk("\n[ERROR] in %s : x_size buffer unmapped / thread %x / process %x\n", |
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| 70 | __FUNCTION__ , (intptr_t)x_size , this->trdid , process->pid ); |
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[624] | 71 | hal_vmm_display( process , false ); |
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[435] | 72 | #endif |
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[440] | 73 | this->errno = EINVAL; |
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[410] | 74 | return -1; |
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| 75 | } |
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| 76 | |
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[440] | 77 | // check y_size buffer in user space |
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| 78 | error = vmm_get_vseg( process , (intptr_t)y_size , &vseg ); |
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| 79 | |
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| 80 | if( error ) |
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| 81 | { |
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| 82 | |
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| 83 | #if DEBUG_SYSCALLS_ERROR |
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| 84 | printk("\n[ERROR] in %s : y_size buffer unmapped / thread %x / process %x\n", |
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| 85 | __FUNCTION__ , (intptr_t)y_size , this->trdid , process->pid ); |
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[624] | 86 | hal_vmm_display( process , false ); |
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[440] | 87 | #endif |
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| 88 | this->errno = EINVAL; |
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| 89 | return -1; |
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| 90 | } |
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| 91 | |
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| 92 | // check ncores buffer in user space |
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| 93 | error = vmm_get_vseg( process , (intptr_t)ncores , &vseg ); |
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| 94 | |
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| 95 | if( error ) |
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| 96 | { |
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| 97 | |
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| 98 | #if DEBUG_SYSCALLS_ERROR |
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| 99 | printk("\n[ERROR] in %s : ncores buffer unmapped / thread %x / process %x\n", |
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| 100 | __FUNCTION__ , (intptr_t)ncores , this->trdid , process->pid ); |
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[624] | 101 | hal_vmm_display( process , false ); |
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[440] | 102 | #endif |
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| 103 | this->errno = EINVAL; |
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| 104 | return -1; |
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| 105 | } |
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| 106 | |
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[410] | 107 | // get parameters |
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[421] | 108 | k_x_size = LOCAL_CLUSTER->x_size; |
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| 109 | k_y_size = LOCAL_CLUSTER->y_size; |
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| 110 | k_ncores = LOCAL_CLUSTER->cores_nr; |
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[410] | 111 | |
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| 112 | // copy to user space |
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[626] | 113 | hal_copy_to_uspace( local_cxy, &k_x_size, x_size, sizeof(uint32_t) ); |
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| 114 | hal_copy_to_uspace( local_cxy, &k_y_size, y_size, sizeof(uint32_t) ); |
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| 115 | hal_copy_to_uspace( local_cxy, &k_ncores, ncores, sizeof(uint32_t) ); |
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[410] | 116 | |
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[435] | 117 | hal_fence(); |
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| 118 | |
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[625] | 119 | #if (DEBUG_SYS_GET_CONFIG || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 120 | uint64_t tm_end = hal_get_cycles(); |
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| 121 | #endif |
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| 122 | |
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[438] | 123 | #if DEBUG_SYS_GET_CONFIG |
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| 124 | if( DEBUG_SYS_GET_CONFIG < tm_end ) |
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[436] | 125 | printk("\n[DBG] %s : thread %x exit / process %x / cost %d / cycle %d\n", |
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[435] | 126 | __FUNCTION__, this, process->pid, (uint32_t)(tm_end-tm_start), (uint32_t)tm_end ); |
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| 127 | #endif |
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| 128 | |
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[625] | 129 | #if CONFIG_INSTRUMENTATION_SYSCALLS |
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| 130 | hal_atomic_add( &syscalls_cumul_cost[SYS_GET_CONFIG] , tm_end - tm_start ); |
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| 131 | hal_atomic_add( &syscalls_occurences[SYS_GET_CONFIG] , 1 ); |
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| 132 | #endif |
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| 133 | |
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[410] | 134 | return 0; |
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| 135 | |
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| 136 | } // end sys_get_config() |
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