From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/i386/mach-default/Makefile | 5 ++ arch/i386/mach-default/setup.c | 106 ++++++++++++++++++++++++++++++++++++++ arch/i386/mach-default/topology.c | 98 +++++++++++++++++++++++++++++++++++ 3 files changed, 209 insertions(+) create mode 100644 arch/i386/mach-default/Makefile create mode 100644 arch/i386/mach-default/setup.c create mode 100644 arch/i386/mach-default/topology.c (limited to 'arch/i386/mach-default') diff --git a/arch/i386/mach-default/Makefile b/arch/i386/mach-default/Makefile new file mode 100644 index 00000000000..e95bb023792 --- /dev/null +++ b/arch/i386/mach-default/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the linux kernel. +# + +obj-y := setup.o topology.o diff --git a/arch/i386/mach-default/setup.c b/arch/i386/mach-default/setup.c new file mode 100644 index 00000000000..0aa08eaa893 --- /dev/null +++ b/arch/i386/mach-default/setup.c @@ -0,0 +1,106 @@ +/* + * Machine specific setup for generic + */ + +#include +#include +#include +#include +#include +#include +#include + +/** + * pre_intr_init_hook - initialisation prior to setting up interrupt vectors + * + * Description: + * Perform any necessary interrupt initialisation prior to setting up + * the "ordinary" interrupt call gates. For legacy reasons, the ISA + * interrupts should be initialised here if the machine emulates a PC + * in any way. + **/ +void __init pre_intr_init_hook(void) +{ + init_ISA_irqs(); +} + +/* + * IRQ2 is cascade interrupt to second interrupt controller + */ +static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL}; + +/** + * intr_init_hook - post gate setup interrupt initialisation + * + * Description: + * Fill in any interrupts that may have been left out by the general + * init_IRQ() routine. interrupts having to do with the machine rather + * than the devices on the I/O bus (like APIC interrupts in intel MP + * systems) are started here. + **/ +void __init intr_init_hook(void) +{ +#ifdef CONFIG_X86_LOCAL_APIC + apic_intr_init(); +#endif + + if (!acpi_ioapic) + setup_irq(2, &irq2); +} + +/** + * pre_setup_arch_hook - hook called prior to any setup_arch() execution + * + * Description: + * generally used to activate any machine specific identification + * routines that may be needed before setup_arch() runs. On VISWS + * this is used to get the board revision and type. + **/ +void __init pre_setup_arch_hook(void) +{ +} + +/** + * trap_init_hook - initialise system specific traps + * + * Description: + * Called as the final act of trap_init(). Used in VISWS to initialise + * the various board specific APIC traps. + **/ +void __init trap_init_hook(void) +{ +} + +static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL}; + +/** + * time_init_hook - do any specific initialisations for the system timer. + * + * Description: + * Must plug the system timer interrupt source at HZ into the IRQ listed + * in irq_vectors.h:TIMER_IRQ + **/ +void __init time_init_hook(void) +{ + setup_irq(0, &irq0); +} + +#ifdef CONFIG_MCA +/** + * mca_nmi_hook - hook into MCA specific NMI chain + * + * Description: + * The MCA (Microchannel Arcitecture) has an NMI chain for NMI sources + * along the MCA bus. Use this to hook into that chain if you will need + * it. + **/ +void __init mca_nmi_hook(void) +{ + /* If I recall correctly, there's a whole bunch of other things that + * we can do to check for NMI problems, but that's all I know about + * at the moment. + */ + + printk("NMI generated from unknown source!\n"); +} +#endif diff --git a/arch/i386/mach-default/topology.c b/arch/i386/mach-default/topology.c new file mode 100644 index 00000000000..5b3e8817dae --- /dev/null +++ b/arch/i386/mach-default/topology.c @@ -0,0 +1,98 @@ +/* + * arch/i386/mach-generic/topology.c - Populate driverfs with topology information + * + * Written by: Matthew Dobson, IBM Corporation + * Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL + * + * Copyright (C) 2002, IBM Corp. + * + * All rights reserved. + * + * This program 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 of the License, or + * (at your option) any later version. + * + * This program 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, GOOD TITLE or + * NON INFRINGEMENT. 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Send feedback to + */ +#include +#include +#include +#include + +static struct i386_cpu cpu_devices[NR_CPUS]; + +int arch_register_cpu(int num){ + struct node *parent = NULL; + +#ifdef CONFIG_NUMA + int node = cpu_to_node(num); + if (node_online(node)) + parent = &node_devices[node].node; +#endif /* CONFIG_NUMA */ + + return register_cpu(&cpu_devices[num].cpu, num, parent); +} + +#ifdef CONFIG_HOTPLUG_CPU + +void arch_unregister_cpu(int num) { + struct node *parent = NULL; + +#ifdef CONFIG_NUMA + int node = cpu_to_node(num); + if (node_online(node)) + parent = &node_devices[node].node; +#endif /* CONFIG_NUMA */ + + return unregister_cpu(&cpu_devices[num].cpu, parent); +} +EXPORT_SYMBOL(arch_register_cpu); +EXPORT_SYMBOL(arch_unregister_cpu); +#endif /*CONFIG_HOTPLUG_CPU*/ + + + +#ifdef CONFIG_NUMA +#include +#include + +struct i386_node node_devices[MAX_NUMNODES]; + +static int __init topology_init(void) +{ + int i; + + for (i = 0; i < MAX_NUMNODES; i++) { + if (node_online(i)) + arch_register_node(i); + } + for (i = 0; i < NR_CPUS; i++) + if (cpu_possible(i)) arch_register_cpu(i); + return 0; +} + +#else /* !CONFIG_NUMA */ + +static int __init topology_init(void) +{ + int i; + + for (i = 0; i < NR_CPUS; i++) + if (cpu_possible(i)) arch_register_cpu(i); + return 0; +} + +#endif /* CONFIG_NUMA */ + +subsys_initcall(topology_init); -- cgit