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