1 files changed, 69 insertions, 0 deletions

diff --git a/arch/i386/mach-visws/traps.c b/arch/i386/mach-visws/traps.c
new file mode 100644
index 000000000000..964353992031
--- /dev/null
+++ b/arch/i386/mach-visws/traps.c
@@ -0,0 +1,69 @@
+/* VISWS traps */
+
+#include <linux/config.h>
+#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_VENDOR_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_VENDOR_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();
+}