69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* VISWS traps */
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/pci_ids.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/arch_hooks.h>
|
|
#include <asm/apic.h>
|
|
#include "cobalt.h"
|
|
#include "lithium.h"
|
|
|
|
|
|
#define A01234 (LI_INTA_0 | LI_INTA_1 | LI_INTA_2 | LI_INTA_3 | LI_INTA_4)
|
|
#define BCD (LI_INTB | LI_INTC | LI_INTD)
|
|
#define ALLDEVS (A01234 | BCD)
|
|
|
|
static __init void lithium_init(void)
|
|
{
|
|
set_fixmap(FIX_LI_PCIA, LI_PCI_A_PHYS);
|
|
set_fixmap(FIX_LI_PCIB, LI_PCI_B_PHYS);
|
|
|
|
if ((li_pcia_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) ||
|
|
(li_pcia_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
|
|
printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'A');
|
|
panic("This machine is not SGI Visual Workstation 320/540");
|
|
}
|
|
|
|
if ((li_pcib_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) ||
|
|
(li_pcib_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
|
|
printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'B');
|
|
panic("This machine is not SGI Visual Workstation 320/540");
|
|
}
|
|
|
|
li_pcia_write16(LI_PCI_INTEN, ALLDEVS);
|
|
li_pcib_write16(LI_PCI_INTEN, ALLDEVS);
|
|
}
|
|
|
|
static __init void cobalt_init(void)
|
|
{
|
|
/*
|
|
* On normal SMP PC this is used only with SMP, but we have to
|
|
* use it and set it up here to start the Cobalt clock
|
|
*/
|
|
set_fixmap(FIX_APIC_BASE, APIC_DEFAULT_PHYS_BASE);
|
|
setup_local_APIC();
|
|
printk(KERN_INFO "Local APIC Version %#lx, ID %#lx\n",
|
|
apic_read(APIC_LVR), apic_read(APIC_ID));
|
|
|
|
set_fixmap(FIX_CO_CPU, CO_CPU_PHYS);
|
|
set_fixmap(FIX_CO_APIC, CO_APIC_PHYS);
|
|
printk(KERN_INFO "Cobalt Revision %#lx, APIC ID %#lx\n",
|
|
co_cpu_read(CO_CPU_REV), co_apic_read(CO_APIC_ID));
|
|
|
|
/* Enable Cobalt APIC being careful to NOT change the ID! */
|
|
co_apic_write(CO_APIC_ID, co_apic_read(CO_APIC_ID) | CO_APIC_ENABLE);
|
|
|
|
printk(KERN_INFO "Cobalt APIC enabled: ID reg %#lx\n",
|
|
co_apic_read(CO_APIC_ID));
|
|
}
|
|
|
|
void __init trap_init_hook(void)
|
|
{
|
|
lithium_init();
|
|
cobalt_init();
|
|
}
|