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https://github.com/ibm-s390-linux/s390-tools.git
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2ca7db75d3
The util_arch module is supposed to provide general information about the underlying architecture of the machine in use. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/*
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* util - Utility function library
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*
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* General architecture helpers
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*
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* Copyright IBM Corp. 2021
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "lib/util_arch.h"
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#define PROC_SYSINFO "/proc/sysinfo"
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#define PROC_SYSINFO_TYPE "Type:"
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#define HSA_SIZE_32M (32 * 1024 * 1024)
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#define HSA_SIZE_512M (512 * 1024 * 1024)
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/**
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* Get the type of the underlying architecture.
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*
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* @returns Type of the underlying architecture
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*/
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int util_arch_machine_type(void)
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{
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int type = UTIL_ARCH_MACHINE_TYPE_UNKNOWN;
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char *line = NULL;
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FILE *fp;
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fp = fopen(PROC_SYSINFO, "r");
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if (!fp)
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return type;
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while (fscanf(fp, "%m[^\n]\n", &line) == 1) {
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int n = sscanf(line, PROC_SYSINFO_TYPE "%d", &type);
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free(line);
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if (n == 1)
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break;
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}
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fclose(fp);
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return type;
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}
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/**
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* Returns a human-readable string of the current machine type.
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*
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* @returns Pointer to a read-only string corresponding to the current machine
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* type
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*/
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const char *util_arch_machine_type_str(void)
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{
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return util_arch_machine_type_to_str(util_arch_machine_type());
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}
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/**
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* Convert a machine type to a human-readable string.
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*
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* @param[in] type Type of the underlying architecture
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*
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* @returns Pointer to a read-only string corresponding to the given machine
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* type
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*/
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const char *util_arch_machine_type_to_str(int type)
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{
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switch (type) {
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case UTIL_ARCH_MACHINE_TYPE_Z10_EC:
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return "IBM System z10 EC";
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case UTIL_ARCH_MACHINE_TYPE_Z10_BC:
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return "IBM System z10 BC";
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case UTIL_ARCH_MACHINE_TYPE_ZE_196:
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return "IBM zEnterprise 196";
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case UTIL_ARCH_MACHINE_TYPE_ZE_114:
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return "IBM zEnterprise 114";
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case UTIL_ARCH_MACHINE_TYPE_ZE_EC12:
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return "IBM zEnterprise EC12";
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case UTIL_ARCH_MACHINE_TYPE_ZE_BC12:
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return "IBM zEnterprise BC12";
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case UTIL_ARCH_MACHINE_TYPE_Z13:
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return "IBM z13";
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case UTIL_ARCH_MACHINE_TYPE_Z13_S:
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return "IBM z13s";
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case UTIL_ARCH_MACHINE_TYPE_Z14:
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return "IBM z14";
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case UTIL_ARCH_MACHINE_TYPE_Z14_ZR1:
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return "IBM z14 ZR1";
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case UTIL_ARCH_MACHINE_TYPE_Z15:
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return "IBM z15";
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case UTIL_ARCH_MACHINE_TYPE_Z15_T02:
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return "IBM z15 Model T02";
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default:
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return "Unknown machine type";
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}
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}
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/**
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* Returns the maximum size of HSA memory in bytes on this architecture.
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*
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* @returns Maximum HSA size in bytes
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*/
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unsigned long util_arch_hsa_maxsize(void)
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{
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unsigned long size = HSA_SIZE_32M;
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int type;
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type = util_arch_machine_type();
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if (type != UTIL_ARCH_MACHINE_TYPE_UNKNOWN &&
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type >= UTIL_ARCH_MACHINE_TYPE_Z15)
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size = HSA_SIZE_512M;
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return size;
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}
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