x86/apic: Move common APIC callbacks

Move more apic struct specific functions out of the header and the apic
management code into the common source file.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213153.834421893@linutronix.de

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/x86/kernel/apic/apic_common.c b/arch/x86/kernel/apic/apic_common.c
index 2a084d48db37..43f9eac53437 100644
--- a/arch/x86/kernel/apic/apic_common.c
+++ b/arch/x86/kernel/apic/apic_common.c
@@ -6,6 +6,64 @@
 #include <linux/irq.h>
 #include <asm/apic.h>
 
+int default_cpu_mask_to_apicid(const struct cpumask *msk, struct irq_data *irqd,
+			       unsigned int *apicid)
+{
+	unsigned int cpu = cpumask_first(msk);
+
+	if (cpu >= nr_cpu_ids)
+		return -EINVAL;
+	*apicid = per_cpu(x86_cpu_to_apicid, cpu);
+	irq_data_update_effective_affinity(irqd, cpumask_of(cpu));
+	return 0;
+}
+
+int flat_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqd,
+			    unsigned int *apicid)
+
+{
+	struct cpumask *effmsk = irq_data_get_effective_affinity_mask(irqd);
+	unsigned long cpu_mask = cpumask_bits(mask)[0] & APIC_ALL_CPUS;
+
+	if (!cpu_mask)
+		return -EINVAL;
+	*apicid = (unsigned int)cpu_mask;
+	cpumask_bits(effmsk)[0] = cpu_mask;
+	return 0;
+}
+
+bool default_check_apicid_used(physid_mask_t *map, int apicid)
+{
+	return physid_isset(apicid, *map);
+}
+
+void flat_vector_allocation_domain(int cpu, struct cpumask *retmask,
+				   const struct cpumask *mask)
+{
+	/*
+	 * Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	cpumask_clear(retmask);
+	cpumask_bits(retmask)[0] = APIC_ALL_CPUS;
+}
+
+void default_vector_allocation_domain(int cpu, struct cpumask *retmask,
+				      const struct cpumask *mask)
+{
+	cpumask_copy(retmask, cpumask_of(cpu));
+}
+
+void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
+{
+	*retmap = *phys_map;
+}
+
 int default_cpu_present_to_apicid(int mps_cpu)
 {
 	if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
@@ -13,8 +71,28 @@ int default_cpu_present_to_apicid(int mps_cpu)
 	else
 		return BAD_APICID;
 }
+EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
 
 int default_check_phys_apicid_present(int phys_apicid)
 {
 	return physid_isset(phys_apicid, phys_cpu_present_map);
 }
+
+const struct cpumask *default_target_cpus(void)
+{
+#ifdef CONFIG_SMP
+	return cpu_online_mask;
+#else
+	return cpumask_of(0);
+#endif
+}
+
+const struct cpumask *online_target_cpus(void)
+{
+	return cpu_online_mask;
+}
+
+int default_apic_id_valid(int apicid)
+{
+	return (apicid < 255);
+}