| 1 | /* |
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| 2 | * sys_get_config.c - get hardware platform parameters. |
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| 3 | * |
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| 4 | * Author Alain Greiner (2016,2017) |
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| 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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| 24 | #include <hal_types.h> |
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| 25 | #include <hal_uspace.h> |
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| 26 | #include <hal_special.h> |
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| 27 | #include <errno.h> |
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| 28 | #include <core.h> |
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| 29 | #include <thread.h> |
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| 30 | #include <process.h> |
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| 31 | #include <vmm.h> |
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| 32 | #include <printk.h> |
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| 33 | |
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| 34 | ////////////////////////////////////// |
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| 35 | int sys_get_config( uint32_t * x_size, |
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| 36 | uint32_t * y_size, |
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| 37 | uint32_t * ncores ) |
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| 38 | { |
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| 39 | paddr_t paddr; |
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| 40 | uint32_t k_x_size; |
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| 41 | uint32_t k_y_size; |
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| 42 | uint32_t k_ncores; |
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| 43 | |
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| 44 | error_t error = 0; |
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| 45 | |
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| 46 | thread_t * this = CURRENT_THREAD; |
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| 47 | process_t * process = this->process; |
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| 48 | |
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| 49 | #if CONFIG_DEBUG_SYS_GET_CONFIG |
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| 50 | uint64_t tm_start; |
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| 51 | uint64_t tm_end; |
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| 52 | tm_start = hal_get_cycles(); |
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| 53 | if( CONFIG_DEBUG_SYS_GET_CONFIG < tm_start ) |
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| 54 | printk("\n[DBG] %s : thread %x enter / process %x / cycle %d\n", |
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| 55 | __FUNCTION__, this, process->pid, (uint32_t)tm_start ); |
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| 56 | #endif |
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| 57 | |
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| 58 | // check buffer in user space |
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| 59 | error |= vmm_v2p_translate( false , x_size , &paddr ); |
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| 60 | error |= vmm_v2p_translate( false , y_size , &paddr ); |
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| 61 | error |= vmm_v2p_translate( false , ncores , &paddr ); |
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| 62 | |
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| 63 | if( error ) |
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| 64 | { |
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| 65 | |
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| 66 | #if CONFIG_DEBUG_SYSCALLS_ERROR |
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| 67 | printk("\n[ERROR] in %s : user buffer unmapped for thread %x in process %x\n", |
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| 68 | __FUNCTION__ , this->trdid , process->pid ); |
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| 69 | #endif |
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| 70 | this->errno = EFAULT; |
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| 71 | return -1; |
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| 72 | } |
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| 73 | |
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| 74 | // get parameters |
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| 75 | k_x_size = LOCAL_CLUSTER->x_size; |
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| 76 | k_y_size = LOCAL_CLUSTER->y_size; |
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| 77 | k_ncores = LOCAL_CLUSTER->cores_nr; |
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| 78 | |
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| 79 | // copy to user space |
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| 80 | hal_copy_to_uspace( x_size , &k_x_size , sizeof(uint32_t) ); |
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| 81 | hal_copy_to_uspace( y_size , &k_y_size , sizeof(uint32_t) ); |
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| 82 | hal_copy_to_uspace( ncores , &k_ncores , sizeof(uint32_t) ); |
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| 83 | |
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| 84 | hal_fence(); |
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| 85 | |
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| 86 | #if CONFIG_DEBUG_SYS_GET_CONFIG |
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| 87 | tm_end = hal_get_cycles(); |
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| 88 | if( CONFIG_DEBUG_SYS_GET_CONFIG < tm_end ) |
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| 89 | printk("\n[DBG] %s : thread %x exit / process %x / cost %d / tycle %d\n", |
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| 90 | __FUNCTION__, this, process->pid, (uint32_t)(tm_end-tm_start), (uint32_t)tm_end ); |
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| 91 | #endif |
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| 92 | |
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| 93 | return 0; |
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| 94 | |
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| 95 | } // end sys_get_config() |
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