projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | |
| 1da177e4 LT |
2 | #include <linux/init.h> |
| 3 | #include <linux/smp.h> | |
| 4 | ||
| 5 | #include <asm/smp.h> | |
| 6 | #include <asm/io.h> | |
| 7 | ||
| 8 | #include "cobalt.h" | |
| 9 | #include "mach_apic.h" | |
| 10 | ||
| 11 | /* Have we found an MP table */ | |
| 12 | int smp_found_config; | |
| 13 | ||
| 14 | /* | |
| 15 | * Various Linux-internal data structures created from the | |
| 16 | * MP-table. | |
| 17 | */ | |
| 18 | int apic_version [MAX_APICS]; | |
| 19 | ||
| 20 | int pic_mode; | |
| 21 | unsigned long mp_lapic_addr; | |
| 22 | ||
| 23 | /* Processor that is doing the boot up */ | |
| 24 | unsigned int boot_cpu_physical_apicid = -1U; | |
| 1da177e4 LT |
25 | |
| 26 | /* Bitmask of physically existing CPUs */ | |
| 27 | physid_mask_t phys_cpu_present_map; | |
| 28 | ||
| 29 | unsigned int __initdata maxcpus = NR_CPUS; | |
| 30 | ||
| 31 | /* | |
| 32 | * The Visual Workstation is Intel MP compliant in the hardware | |
| 33 | * sense, but it doesn't have a BIOS(-configuration table). | |
| 34 | * No problem for Linux. | |
| 35 | */ | |
| 36 | ||
| 37 | static void __init MP_processor_info (struct mpc_config_processor *m) | |
| 38 | { | |
| 64883ab0 | 39 | int ver, logical_apicid; |
| 1da177e4 | 40 | physid_mask_t apic_cpus; |
| 64883ab0 | 41 | |
| 1da177e4 LT |
42 | if (!(m->mpc_cpuflag & CPU_ENABLED)) |
| 43 | return; | |
| 44 | ||
| 45 | logical_apicid = m->mpc_apicid; | |
| 64883ab0 TG |
46 | printk(KERN_INFO "%sCPU #%d %u:%u APIC version %d\n", |
| 47 | m->mpc_cpuflag & CPU_BOOTPROCESSOR ? "Bootup " : "", | |
| 48 | m->mpc_apicid, | |
| 49 | (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8, | |
| 50 | (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4, | |
| 51 | m->mpc_apicver); | |
| 1da177e4 | 52 | |
| 9e84d1c3 | 53 | if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) |
| 1da177e4 | 54 | boot_cpu_physical_apicid = m->mpc_apicid; |
| 1da177e4 LT |
55 | |
| 56 | ver = m->mpc_apicver; | |
| 57 | if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) { | |
| 58 | printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n", | |
| 59 | m->mpc_apicid, MAX_APICS); | |
| 60 | return; | |
| 61 | } | |
| 62 | ||
| 63 | apic_cpus = apicid_to_cpu_present(m->mpc_apicid); | |
| 64 | physids_or(phys_cpu_present_map, phys_cpu_present_map, apic_cpus); | |
| 65 | /* | |
| 66 | * Validate version | |
| 67 | */ | |
| 68 | if (ver == 0x0) { | |
| 69 | printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! " | |
| 70 | "fixing up to 0x10. (tell your hw vendor)\n", | |
| 71 | m->mpc_apicid); | |
| 72 | ver = 0x10; | |
| 73 | } | |
| 74 | apic_version[m->mpc_apicid] = ver; | |
| 75 | } | |
| 76 | ||
| 77 | void __init find_smp_config(void) | |
| 78 | { | |
| 79 | struct mpc_config_processor *mp = phys_to_virt(CO_CPU_TAB_PHYS); | |
| 80 | unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS)); | |
| 81 | ||
| 82 | if (ncpus > CO_CPU_MAX) { | |
| 83 | printk(KERN_WARNING "find_visws_smp: got cpu count of %d at %p\n", | |
| 84 | ncpus, mp); | |
| 85 | ||
| 86 | ncpus = CO_CPU_MAX; | |
| 87 | } | |
| 88 | ||
| 89 | if (ncpus > maxcpus) | |
| 90 | ncpus = maxcpus; | |
| 91 | ||
| 92 | smp_found_config = 1; | |
| 93 | while (ncpus--) | |
| 94 | MP_processor_info(mp++); | |
| 95 | ||
| 96 | mp_lapic_addr = APIC_DEFAULT_PHYS_BASE; | |
| 97 | } | |
| 98 | ||
| 99 | void __init get_smp_config (void) | |
| 100 | { | |
| 101 | } |