diff options
Diffstat (limited to 'arch/x86/kernel/apic/x2apic_phys.c')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_phys.c | 115 |
1 files changed, 29 insertions, 86 deletions
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index c7e6d6645bf..f5373dfde21 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -7,11 +7,12 @@ #include <linux/dmar.h> #include <asm/smp.h> -#include <asm/apic.h> -#include <asm/ipi.h> +#include <asm/x2apic.h> int x2apic_phys; +static struct apic apic_x2apic_phys; + static int set_x2apic_phys_mode(char *arg) { x2apic_phys = 1; @@ -27,94 +28,46 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) return 0; } -/* - * need to use more than cpu 0, because we need more vectors when - * MSI-X are used. - */ -static const struct cpumask *x2apic_target_cpus(void) -{ - return cpu_online_mask; -} - -static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask) -{ - cpumask_clear(retmask); - cpumask_set_cpu(cpu, retmask); -} - -static void __x2apic_send_IPI_dest(unsigned int apicid, int vector, - unsigned int dest) -{ - unsigned long cfg; - - cfg = __prepare_ICR(0, vector, dest); - - /* - * send the IPI. - */ - native_x2apic_icr_write(cfg, apicid); -} - -static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector) +static void +__x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest) { unsigned long query_cpu; + unsigned long this_cpu; unsigned long flags; x2apic_wrmsr_fence(); local_irq_save(flags); + + this_cpu = smp_processor_id(); for_each_cpu(query_cpu, mask) { + if (apic_dest == APIC_DEST_ALLBUT && this_cpu == query_cpu) + continue; __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu), vector, APIC_DEST_PHYSICAL); } local_irq_restore(flags); } +static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector) +{ + __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLINC); +} + static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector) { - unsigned long this_cpu = smp_processor_id(); - unsigned long query_cpu; - unsigned long flags; - - x2apic_wrmsr_fence(); - - local_irq_save(flags); - for_each_cpu(query_cpu, mask) { - if (query_cpu != this_cpu) - __x2apic_send_IPI_dest( - per_cpu(x86_cpu_to_apicid, query_cpu), - vector, APIC_DEST_PHYSICAL); - } - local_irq_restore(flags); + __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLBUT); } static void x2apic_send_IPI_allbutself(int vector) { - unsigned long this_cpu = smp_processor_id(); - unsigned long query_cpu; - unsigned long flags; - - x2apic_wrmsr_fence(); - - local_irq_save(flags); - for_each_online_cpu(query_cpu) { - if (query_cpu == this_cpu) - continue; - __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu), - vector, APIC_DEST_PHYSICAL); - } - local_irq_restore(flags); + __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT); } static void x2apic_send_IPI_all(int vector) { - x2apic_send_IPI_mask(cpu_online_mask, vector); -} - -static int x2apic_apic_id_registered(void) -{ - return 1; + __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC); } static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask) @@ -149,34 +102,22 @@ x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask, return per_cpu(x86_cpu_to_apicid, cpu); } -static unsigned int x2apic_phys_get_apic_id(unsigned long x) -{ - return x; -} - -static unsigned long set_apic_id(unsigned int id) -{ - return id; -} - -static int x2apic_phys_pkg_id(int initial_apicid, int index_msb) +static void init_x2apic_ldr(void) { - return initial_apicid >> index_msb; } -static void x2apic_send_IPI_self(int vector) +static int x2apic_phys_probe(void) { - apic_write(APIC_SELF_IPI, vector); -} + if (x2apic_mode && x2apic_phys) + return 1; -static void init_x2apic_ldr(void) -{ + return apic == &apic_x2apic_phys; } -struct apic apic_x2apic_phys = { +static struct apic apic_x2apic_phys = { .name = "physical x2apic", - .probe = NULL, + .probe = x2apic_phys_probe, .acpi_madt_oem_check = x2apic_acpi_madt_oem_check, .apic_id_registered = x2apic_apic_id_registered, @@ -203,8 +144,8 @@ struct apic apic_x2apic_phys = { .phys_pkg_id = x2apic_phys_pkg_id, .mps_oem_check = NULL, - .get_apic_id = x2apic_phys_get_apic_id, - .set_apic_id = set_apic_id, + .get_apic_id = x2apic_get_apic_id, + .set_apic_id = x2apic_set_apic_id, .apic_id_mask = 0xFFFFFFFFu, .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid, @@ -229,3 +170,5 @@ struct apic apic_x2apic_phys = { .wait_icr_idle = native_x2apic_wait_icr_idle, .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle, }; + +apic_driver(apic_x2apic_phys); |