summaryrefslogtreecommitdiffstats
path: root/arch/x86/include/asm/ipi.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/include/asm/ipi.h')
-rw-r--r--arch/x86/include/asm/ipi.h75
1 files changed, 40 insertions, 35 deletions
diff --git a/arch/x86/include/asm/ipi.h b/arch/x86/include/asm/ipi.h
index c745a306f7d3..0b7228268a63 100644
--- a/arch/x86/include/asm/ipi.h
+++ b/arch/x86/include/asm/ipi.h
@@ -1,6 +1,8 @@
#ifndef _ASM_X86_IPI_H
#define _ASM_X86_IPI_H
+#ifdef CONFIG_X86_LOCAL_APIC
+
/*
* Copyright 2004 James Cleverdon, IBM.
* Subject to the GNU Public License, v.2
@@ -55,8 +57,8 @@ static inline void __xapic_wait_icr_idle(void)
cpu_relax();
}
-static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
- unsigned int dest)
+static inline void
+__default_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest)
{
/*
* Subtle. In the case of the 'never do double writes' workaround
@@ -87,8 +89,8 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector,
* This is used to send an IPI with no shorthand notation (the destination is
* specified in bits 56 to 63 of the ICR).
*/
-static inline void __send_IPI_dest_field(unsigned int mask, int vector,
- unsigned int dest)
+static inline void
+ __default_send_IPI_dest_field(unsigned int mask, int vector, unsigned int dest)
{
unsigned long cfg;
@@ -117,41 +119,44 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector,
native_apic_mem_write(APIC_ICR, cfg);
}
-static inline void send_IPI_mask_sequence(const struct cpumask *mask,
- int vector)
-{
- unsigned long flags;
- unsigned long query_cpu;
+extern void default_send_IPI_mask_sequence_phys(const struct cpumask *mask,
+ int vector);
+extern void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
+ int vector);
+extern void default_send_IPI_mask_sequence_logical(const struct cpumask *mask,
+ int vector);
+extern void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask,
+ int vector);
- /*
- * Hack. The clustered APIC addressing mode doesn't allow us to send
- * to an arbitrary mask, so I do a unicast to each CPU instead.
- * - mbligh
- */
- local_irq_save(flags);
- for_each_cpu(query_cpu, mask) {
- __send_IPI_dest_field(per_cpu(x86_cpu_to_apicid, query_cpu),
- vector, APIC_DEST_PHYSICAL);
- }
- local_irq_restore(flags);
+/* Avoid include hell */
+#define NMI_VECTOR 0x02
+
+extern int no_broadcast;
+
+static inline void __default_local_send_IPI_allbutself(int vector)
+{
+ if (no_broadcast || vector == NMI_VECTOR)
+ apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
+ else
+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector, apic->dest_logical);
}
-static inline void send_IPI_mask_allbutself(const struct cpumask *mask,
- int vector)
+static inline void __default_local_send_IPI_all(int vector)
{
- unsigned long flags;
- unsigned int query_cpu;
- unsigned int this_cpu = smp_processor_id();
-
- /* See Hack comment above */
-
- local_irq_save(flags);
- for_each_cpu(query_cpu, mask)
- if (query_cpu != this_cpu)
- __send_IPI_dest_field(
- per_cpu(x86_cpu_to_apicid, query_cpu),
- vector, APIC_DEST_PHYSICAL);
- local_irq_restore(flags);
+ if (no_broadcast || vector == NMI_VECTOR)
+ apic->send_IPI_mask(cpu_online_mask, vector);
+ else
+ __default_send_IPI_shortcut(APIC_DEST_ALLINC, vector, apic->dest_logical);
}
+#ifdef CONFIG_X86_32
+extern void default_send_IPI_mask_logical(const struct cpumask *mask,
+ int vector);
+extern void default_send_IPI_allbutself(int vector);
+extern void default_send_IPI_all(int vector);
+extern void default_send_IPI_self(int vector);
+#endif
+
+#endif
+
#endif /* _ASM_X86_IPI_H */
OpenPOWER on IntegriCloud