projects / deliverable / linux.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> | |
| b5fe363b YL |
19 | #include <asm/mach-default/mach_wakecpu.h> |
| 20 | ||
| 21 | void __init es7000_update_genapic_to_cluster(void) | |
| 22 | { | |
| 23 | genapic->target_cpus = target_cpus_cluster; | |
| 24 | genapic->int_delivery_mode = INT_DELIVERY_MODE_CLUSTER; | |
| 25 | genapic->int_dest_mode = INT_DEST_MODE_CLUSTER; | |
| 26 | genapic->no_balance_irq = NO_BALANCE_IRQ_CLUSTER; | |
| 27 | ||
| 28 | genapic->init_apic_ldr = init_apic_ldr_cluster; | |
| 29 | ||
| 30 | genapic->cpu_mask_to_apicid = cpu_mask_to_apicid_cluster; | |
| 31 | } | |
| 1da177e4 | 32 | |
| e96763d6 | 33 | static int probe_es7000(void) |
| 1da177e4 LT |
34 | { |
| 35 | /* probed later in mptable/ACPI hooks */ | |
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| 1833d6bc VG |
39 | extern void es7000_sw_apic(void); |
| 40 | static void __init enable_apic_mode(void) | |
| 41 | { | |
| 42 | es7000_sw_apic(); | |
| 43 | return; | |
| 44 | } | |
| 45 | ||
| f29521e4 JSR |
46 | static __init int |
| 47 | mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) | |
| 1833d6bc | 48 | { |
| 6c65da50 | 49 | if (mpc->oemptr) { |
| b0e239ff | 50 | struct mpc_oemtable *oem_table = |
| 6c65da50 | 51 | (struct mpc_oemtable *)mpc->oemptr; |
| 1833d6bc VG |
52 | if (!strncmp(oem, "UNISYS", 6)) |
| 53 | return parse_unisys_oem((char *)oem_table); | |
| 54 | } | |
| 55 | return 0; | |
| 56 | } | |
| 57 | ||
| 58 | #ifdef CONFIG_ACPI | |
| 59 | /* Hook from generic ACPI tables.c */ | |
| 60 | static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) | |
| 61 | { | |
| a73aaedd YL |
62 | unsigned long oem_addr = 0; |
| 63 | int check_dsdt; | |
| 64 | int ret = 0; | |
| 65 | ||
| 66 | /* check dsdt at first to avoid clear fix_map for oem_addr */ | |
| 67 | check_dsdt = es7000_check_dsdt(); | |
| 68 | ||
| 1833d6bc | 69 | if (!find_unisys_acpi_oem_table(&oem_addr)) { |
| a73aaedd YL |
70 | if (check_dsdt) |
| 71 | ret = parse_unisys_oem((char *)oem_addr); | |
| 1833d6bc VG |
72 | else { |
| 73 | setup_unisys(); | |
| a73aaedd | 74 | ret = 1; |
| 1833d6bc | 75 | } |
| a73aaedd YL |
76 | /* |
| 77 | * we need to unmap it | |
| 78 | */ | |
| 79 | unmap_unisys_acpi_oem_table(oem_addr); | |
| 1833d6bc | 80 | } |
| a73aaedd | 81 | return ret; |
| 1833d6bc VG |
82 | } |
| 83 | #else | |
| 84 | static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) | |
| 85 | { | |
| 86 | return 0; | |
| 87 | } | |
| 88 | #endif | |
| 89 | ||
| e7986739 | 90 | static void vector_allocation_domain(int cpu, cpumask_t *retmask) |
| 497c9a19 YL |
91 | { |
| 92 | /* Careful. Some cpus do not strictly honor the set of cpus | |
| 93 | * specified in the interrupt destination when using lowest | |
| 94 | * priority interrupt delivery mode. | |
| 95 | * | |
| 96 | * In particular there was a hyperthreading cpu observed to | |
| 97 | * deliver interrupts to the wrong hyperthread when only one | |
| 98 | * hyperthread was specified in the interrupt desitination. | |
| 99 | */ | |
| e7986739 | 100 | *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } }; |
| 497c9a19 YL |
101 | } |
| 102 | ||
| d3ab7856 | 103 | struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000); |