diff --git a/kern/smp.c b/kern/smp.c new file mode 100644 index 00000000..2f5f16ee --- /dev/null +++ b/kern/smp.c @@ -0,0 +1,69 @@ +/* smp.c - Template for generic SMP controller for Mach. + Copyright (C) 2020 Free Software Foundation, Inc. + Written by Almudena Garcia Jurado-Centurion + + This file is part of GNU Mach. + + GNU Mach is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + GNU Mach is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + +#include + +struct smp_data smp_info; + +#ifdef __i386__ +#include +#include + +/* smp_data_init: initialize smp_data structure + * Must be called after smp_init(), once all APIC structures + * has been initialized + */ + +void smp_data_init(void) +{ + smp_info.num_cpus = apic_get_numcpus(); +} + +/* smp_get_numcpus: returns the number of cpus existing in the machine */ + +int smp_get_numcpus(void) +{ + return smp_info.num_cpus; +} + +/* smp_get_current_cpu: return the hardware identifier (APIC ID in x86) of current CPU */ + +int smp_get_current_cpu(void) +{ + return apic_get_current_cpu(); +} + +/* smp_init: initialize the SMP support, starting the cpus searching + * and enumeration */ + +int smp_init(void) +{ + int apic_success; + + apic_success = acpi_apic_init(); + if (apic_success) + { + smp_data_init(); + } + + return apic_success; +} + +#endif diff --git a/kern/smp.h b/kern/smp.h new file mode 100644 index 00000000..f03dab8c --- /dev/null +++ b/kern/smp.h @@ -0,0 +1,29 @@ +/* smp.h - Template for generic SMP controller for Mach. Header file + Copyright (C) 2020 Free Software Foundation, Inc. + Written by Almudena Garcia Jurado-Centurion + + This file is part of GNU Mach. + + GNU Mach is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + GNU Mach is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + +struct smp_data +{ + int num_cpus; +}; + +void smp_data_init(void); +int smp_get_numcpus(void); +int smp_get_current_cpu(void); +int smp_init(void);