1/* VISWS traps */ 2 3#include <linux/sched.h> 4#include <linux/kernel.h> 5#include <linux/init.h> 6#include <linux/pci.h> 7#include <linux/pci_ids.h> 8 9#include <asm/io.h> 10#include <asm/arch_hooks.h> 11#include <asm/apic.h> 12#include "cobalt.h" 13#include "lithium.h" 14 15 16#define A01234 (LI_INTA_0 | LI_INTA_1 | LI_INTA_2 | LI_INTA_3 | LI_INTA_4) 17#define BCD (LI_INTB | LI_INTC | LI_INTD) 18#define ALLDEVS (A01234 | BCD) 19 20static __init void lithium_init(void) 21{ 22 set_fixmap(FIX_LI_PCIA, LI_PCI_A_PHYS); 23 set_fixmap(FIX_LI_PCIB, LI_PCI_B_PHYS); 24 25 if ((li_pcia_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) || 26 (li_pcia_read16(PCI_DEVICE_ID) != PCI_VENDOR_ID_SGI_LITHIUM)) { 27 printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'A'); 28 panic("This machine is not SGI Visual Workstation 320/540"); 29 } 30 31 if ((li_pcib_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) || 32 (li_pcib_read16(PCI_DEVICE_ID) != PCI_VENDOR_ID_SGI_LITHIUM)) { 33 printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'B'); 34 panic("This machine is not SGI Visual Workstation 320/540"); 35 } 36 37 li_pcia_write16(LI_PCI_INTEN, ALLDEVS); 38 li_pcib_write16(LI_PCI_INTEN, ALLDEVS); 39} 40 41static __init void cobalt_init(void) 42{ 43 /* 44 * On normal SMP PC this is used only with SMP, but we have to 45 * use it and set it up here to start the Cobalt clock 46 */ 47 set_fixmap(FIX_APIC_BASE, APIC_DEFAULT_PHYS_BASE); 48 setup_local_APIC(); 49 printk(KERN_INFO "Local APIC Version %#lx, ID %#lx\n", 50 apic_read(APIC_LVR), apic_read(APIC_ID)); 51 52 set_fixmap(FIX_CO_CPU, CO_CPU_PHYS); 53 set_fixmap(FIX_CO_APIC, CO_APIC_PHYS); 54 printk(KERN_INFO "Cobalt Revision %#lx, APIC ID %#lx\n", 55 co_cpu_read(CO_CPU_REV), co_apic_read(CO_APIC_ID)); 56 57 /* Enable Cobalt APIC being careful to NOT change the ID! */ 58 co_apic_write(CO_APIC_ID, co_apic_read(CO_APIC_ID) | CO_APIC_ENABLE); 59 60 printk(KERN_INFO "Cobalt APIC enabled: ID reg %#lx\n", 61 co_apic_read(CO_APIC_ID)); 62} 63 64void __init trap_init_hook(void) 65{ 66 lithium_init(); 67 cobalt_init(); 68} 69