1 #include <linux/threads.h>
2 #include <linux/cpumask.h>
3 #include <linux/string.h>
4 #include <linux/kernel.h>
5 #include <linux/ctype.h>
6 #include <linux/init.h>
7 #include <linux/dmar.h>
10 #include <asm/x2apic.h>
14 static struct apic apic_x2apic_phys;
16 static int set_x2apic_phys_mode(char *arg)
21 early_param("x2apic_phys", set_x2apic_phys_mode);
23 static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
26 return x2apic_enabled();
32 __x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest)
34 unsigned long query_cpu;
35 unsigned long this_cpu;
40 local_irq_save(flags);
42 this_cpu = smp_processor_id();
43 for_each_cpu(query_cpu, mask) {
44 if (apic_dest == APIC_DEST_ALLBUT && this_cpu == query_cpu)
46 __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
47 vector, APIC_DEST_PHYSICAL);
49 local_irq_restore(flags);
52 static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
54 __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLINC);
58 x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
60 __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLBUT);
63 static void x2apic_send_IPI_allbutself(int vector)
65 __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT);
68 static void x2apic_send_IPI_all(int vector)
70 __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC);
73 static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
76 * We're using fixed IRQ delivery, can only return one phys APIC ID.
77 * May as well be the first.
79 int cpu = cpumask_first(cpumask);
81 if ((unsigned)cpu < nr_cpu_ids)
82 return per_cpu(x86_cpu_to_apicid, cpu);
88 x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
89 const struct cpumask *andmask)
94 * We're using fixed IRQ delivery, can only return one phys APIC ID.
95 * May as well be the first.
97 for_each_cpu_and(cpu, cpumask, andmask) {
98 if (cpumask_test_cpu(cpu, cpu_online_mask))
102 return per_cpu(x86_cpu_to_apicid, cpu);
105 static void init_x2apic_ldr(void)
109 static int x2apic_phys_probe(void)
111 if (x2apic_mode && x2apic_phys)
114 return apic == &apic_x2apic_phys;
117 static struct apic apic_x2apic_phys = {
119 .name = "physical x2apic",
120 .probe = x2apic_phys_probe,
121 .acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
122 .apic_id_valid = x2apic_apic_id_valid,
123 .apic_id_registered = x2apic_apic_id_registered,
125 .irq_delivery_mode = dest_Fixed,
126 .irq_dest_mode = 0, /* physical */
128 .target_cpus = x2apic_target_cpus,
131 .check_apicid_used = NULL,
132 .check_apicid_present = NULL,
134 .vector_allocation_domain = x2apic_vector_allocation_domain,
135 .init_apic_ldr = init_x2apic_ldr,
137 .ioapic_phys_id_map = NULL,
138 .setup_apic_routing = NULL,
139 .multi_timer_check = NULL,
140 .cpu_present_to_apicid = default_cpu_present_to_apicid,
141 .apicid_to_cpu_present = NULL,
142 .setup_portio_remap = NULL,
143 .check_phys_apicid_present = default_check_phys_apicid_present,
144 .enable_apic_mode = NULL,
145 .phys_pkg_id = x2apic_phys_pkg_id,
146 .mps_oem_check = NULL,
148 .get_apic_id = x2apic_get_apic_id,
149 .set_apic_id = x2apic_set_apic_id,
150 .apic_id_mask = 0xFFFFFFFFu,
152 .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
153 .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and,
155 .send_IPI_mask = x2apic_send_IPI_mask,
156 .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
157 .send_IPI_allbutself = x2apic_send_IPI_allbutself,
158 .send_IPI_all = x2apic_send_IPI_all,
159 .send_IPI_self = x2apic_send_IPI_self,
161 .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
162 .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
163 .wait_for_init_deassert = NULL,
164 .smp_callin_clear_local_apic = NULL,
165 .inquire_remote_apic = NULL,
167 .read = native_apic_msr_read,
168 .write = native_apic_msr_write,
169 .icr_read = native_x2apic_icr_read,
170 .icr_write = native_x2apic_icr_write,
171 .wait_icr_idle = native_x2apic_wait_icr_idle,
172 .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle,
175 apic_driver(apic_x2apic_phys);