projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * APIC driver for the Unisys ES7000 chipset. | |
| 3 | */ | |
| 4 | #define APIC_DEFINITION 1 | |
| 1da177e4 LT |
5 | #include <linux/threads.h> |
| 6 | #include <linux/cpumask.h> | |
| 7 | #include <asm/mpspec.h> | |
| 8 | #include <asm/genapic.h> | |
| 9 | #include <asm/fixmap.h> | |
| 10 | #include <asm/apicdef.h> | |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/string.h> | |
| 1da177e4 | 13 | #include <linux/init.h> |
| c7e7964c | 14 | #include <asm/es7000/apicdef.h> |
| 4696ca5b | 15 | #include <linux/smp.h> |
| c7e7964c YL |
16 | #include <asm/es7000/apic.h> |
| 17 | #include <asm/es7000/ipi.h> | |
| 18 | #include <asm/es7000/mpparse.h> | |
| 19 | #include <asm/es7000/wakecpu.h> | |
| 1da177e4 | 20 | |
| e96763d6 | 21 | static int probe_es7000(void) |
| 1da177e4 LT |
22 | { |
| 23 | /* probed later in mptable/ACPI hooks */ | |
| 24 | return 0; | |
| 25 | } | |
| 26 | ||
| 1833d6bc VG |
27 | extern void es7000_sw_apic(void); |
| 28 | static void __init enable_apic_mode(void) | |
| 29 | { | |
| 30 | es7000_sw_apic(); | |
| 31 | return; | |
| 32 | } | |
| 33 | ||
| 34 | static __init int mps_oem_check(struct mp_config_table *mpc, char *oem, | |
| 35 | char *productid) | |
| 36 | { | |
| 37 | if (mpc->mpc_oemptr) { | |
| 38 | struct mp_config_oemtable *oem_table = | |
| 39 | (struct mp_config_oemtable *)mpc->mpc_oemptr; | |
| 40 | if (!strncmp(oem, "UNISYS", 6)) | |
| 41 | return parse_unisys_oem((char *)oem_table); | |
| 42 | } | |
| 43 | return 0; | |
| 44 | } | |
| 45 | ||
| 46 | #ifdef CONFIG_ACPI | |
| 47 | /* Hook from generic ACPI tables.c */ | |
| 48 | static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) | |
| 49 | { | |
| a73aaedd YL |
50 | unsigned long oem_addr = 0; |
| 51 | int check_dsdt; | |
| 52 | int ret = 0; | |
| 53 | ||
| 54 | /* check dsdt at first to avoid clear fix_map for oem_addr */ | |
| 55 | check_dsdt = es7000_check_dsdt(); | |
| 56 | ||
| 1833d6bc | 57 | if (!find_unisys_acpi_oem_table(&oem_addr)) { |
| a73aaedd YL |
58 | if (check_dsdt) |
| 59 | ret = parse_unisys_oem((char *)oem_addr); | |
| 1833d6bc VG |
60 | else { |
| 61 | setup_unisys(); | |
| a73aaedd | 62 | ret = 1; |
| 1833d6bc | 63 | } |
| a73aaedd YL |
64 | /* |
| 65 | * we need to unmap it | |
| 66 | */ | |
| 67 | unmap_unisys_acpi_oem_table(oem_addr); | |
| 1833d6bc | 68 | } |
| a73aaedd | 69 | return ret; |
| 1833d6bc VG |
70 | } |
| 71 | #else | |
| 72 | static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) | |
| 73 | { | |
| 74 | return 0; | |
| 75 | } | |
| 76 | #endif | |
| 77 | ||
| 497c9a19 YL |
78 | static cpumask_t vector_allocation_domain(int cpu) |
| 79 | { | |
| 80 | /* Careful. Some cpus do not strictly honor the set of cpus | |
| 81 | * specified in the interrupt destination when using lowest | |
| 82 | * priority interrupt delivery mode. | |
| 83 | * | |
| 84 | * In particular there was a hyperthreading cpu observed to | |
| 85 | * deliver interrupts to the wrong hyperthread when only one | |
| 86 | * hyperthread was specified in the interrupt desitination. | |
| 87 | */ | |
| 88 | cpumask_t domain = { { [0] = APIC_ALL_CPUS, } }; | |
| 89 | return domain; | |
| 90 | } | |
| 91 | ||
| d3ab7856 | 92 | struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000); |