diff options
Diffstat (limited to 'arch/x86/kernel/apic/bigsmp_32.c')
| -rw-r--r-- | arch/x86/kernel/apic/bigsmp_32.c | 96 |
1 files changed, 37 insertions, 59 deletions
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index cb804c5091b..e4840aa7a25 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -26,15 +26,6 @@ static int bigsmp_apic_id_registered(void) return 1; } -static const struct cpumask *bigsmp_target_cpus(void) -{ -#ifdef CONFIG_SMP - return cpu_online_mask; -#else - return cpumask_of(0); -#endif -} - static unsigned long bigsmp_check_apicid_used(physid_mask_t *map, int apicid) { return 0; @@ -45,6 +36,12 @@ static unsigned long bigsmp_check_apicid_present(int bit) return 1; } +static int bigsmp_early_logical_apicid(int cpu) +{ + /* on bigsmp, logical apicid is the same as physical */ + return early_per_cpu(x86_cpu_to_apicid, cpu); +} + static inline unsigned long calculate_ldr(int cpu) { unsigned long val, id; @@ -80,11 +77,6 @@ static void bigsmp_setup_apic_routing(void) nr_ioapics); } -static int bigsmp_apicid_to_node(int logical_apicid) -{ - return apicid_2_node[hard_smp_processor_id()]; -} - static int bigsmp_cpu_present_to_apicid(int mps_cpu) { if (mps_cpu < nr_cpu_ids) @@ -93,14 +85,6 @@ static int bigsmp_cpu_present_to_apicid(int mps_cpu) return BAD_APICID; } -/* Mapping from cpu number to logical apicid */ -static inline int bigsmp_cpu_to_logical_apicid(int cpu) -{ - if (cpu >= nr_cpu_ids) - return BAD_APICID; - return cpu_physical_id(cpu); -} - static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) { /* For clustered we don't have a good way to do this yet - hack */ @@ -112,28 +96,6 @@ static int bigsmp_check_phys_apicid_present(int phys_apicid) return 1; } -/* As we are using single CPU as destination, pick only one CPU here */ -static unsigned int bigsmp_cpu_mask_to_apicid(const struct cpumask *cpumask) -{ - return bigsmp_cpu_to_logical_apicid(cpumask_first(cpumask)); -} - -static unsigned int bigsmp_cpu_mask_to_apicid_and(const struct cpumask *cpumask, - const struct cpumask *andmask) -{ - int cpu; - - /* - * We're using fixed IRQ delivery, can only return one phys APIC ID. - * May as well be the first. - */ - for_each_cpu_and(cpu, cpumask, andmask) { - if (cpumask_test_cpu(cpu, cpu_online_mask)) - break; - } - return bigsmp_cpu_to_logical_apicid(cpu); -} - static int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb) { return cpuid_apic >> index_msb; @@ -180,12 +142,6 @@ static const struct dmi_system_id bigsmp_dmi_table[] = { { } /* NULL entry stops DMI scanning */ }; -static void bigsmp_vector_allocation_domain(int cpu, struct cpumask *retmask) -{ - cpumask_clear(retmask); - cpumask_set_cpu(cpu, retmask); -} - static int probe_bigsmp(void) { if (def_to_bigsmp) @@ -196,31 +152,30 @@ static int probe_bigsmp(void) return dmi_bigsmp; } -struct apic apic_bigsmp = { +static struct apic apic_bigsmp = { .name = "bigsmp", .probe = probe_bigsmp, .acpi_madt_oem_check = NULL, + .apic_id_valid = default_apic_id_valid, .apic_id_registered = bigsmp_apic_id_registered, .irq_delivery_mode = dest_Fixed, /* phys delivery to target CPU: */ .irq_dest_mode = 0, - .target_cpus = bigsmp_target_cpus, + .target_cpus = default_target_cpus, .disable_esr = 1, .dest_logical = 0, .check_apicid_used = bigsmp_check_apicid_used, .check_apicid_present = bigsmp_check_apicid_present, - .vector_allocation_domain = bigsmp_vector_allocation_domain, + .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = bigsmp_init_apic_ldr, .ioapic_phys_id_map = bigsmp_ioapic_phys_id_map, .setup_apic_routing = bigsmp_setup_apic_routing, .multi_timer_check = NULL, - .apicid_to_node = bigsmp_apicid_to_node, - .cpu_to_logical_apicid = bigsmp_cpu_to_logical_apicid, .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, .setup_portio_remap = NULL, @@ -233,8 +188,7 @@ struct apic apic_bigsmp = { .set_apic_id = NULL, .apic_id_mask = 0xFF << 24, - .cpu_mask_to_apicid = bigsmp_cpu_mask_to_apicid, - .cpu_mask_to_apicid_and = bigsmp_cpu_mask_to_apicid_and, + .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, .send_IPI_mask = bigsmp_send_IPI_mask, .send_IPI_mask_allbutself = NULL, @@ -245,15 +199,39 @@ struct apic apic_bigsmp = { .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, - .wait_for_init_deassert = default_wait_for_init_deassert, - + .wait_for_init_deassert = true, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, .read = native_apic_mem_read, .write = native_apic_mem_write, + .eoi_write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, + + .x86_32_early_logical_apicid = bigsmp_early_logical_apicid, }; + +void __init generic_bigsmp_probe(void) +{ + unsigned int cpu; + + if (!probe_bigsmp()) + return; + + apic = &apic_bigsmp; + + for_each_possible_cpu(cpu) { + if (early_per_cpu(x86_cpu_to_logical_apicid, + cpu) == BAD_APICID) + continue; + early_per_cpu(x86_cpu_to_logical_apicid, cpu) = + bigsmp_early_logical_apicid(cpu); + } + + pr_info("Overriding APIC driver with %s\n", apic_bigsmp.name); +} + +apic_driver(apic_bigsmp); |