blob: bfac6ba10f8abde22e88767c373d84b6da20f67f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* VISWS traps */
2
Linus Torvalds1da177e2005-04-16 15:20:36 -07003#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) ||
Jiri Slabyc43eaa02007-06-18 10:58:14 +020026 (li_pcia_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 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) ||
Jiri Slabyc43eaa02007-06-18 10:58:14 +020032 (li_pcib_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 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();
Randy Dunlap31780712008-03-04 14:55:47 -080049 printk(KERN_INFO "Local APIC Version %#x, ID %#x\n",
50 (unsigned int)apic_read(APIC_LVR),
51 (unsigned int)apic_read(APIC_ID));
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53 set_fixmap(FIX_CO_CPU, CO_CPU_PHYS);
54 set_fixmap(FIX_CO_APIC, CO_APIC_PHYS);
55 printk(KERN_INFO "Cobalt Revision %#lx, APIC ID %#lx\n",
56 co_cpu_read(CO_CPU_REV), co_apic_read(CO_APIC_ID));
57
58 /* Enable Cobalt APIC being careful to NOT change the ID! */
59 co_apic_write(CO_APIC_ID, co_apic_read(CO_APIC_ID) | CO_APIC_ENABLE);
60
61 printk(KERN_INFO "Cobalt APIC enabled: ID reg %#lx\n",
62 co_apic_read(CO_APIC_ID));
63}
64
65void __init trap_init_hook(void)
66{
67 lithium_init();
68 cobalt_init();
69}