[IA64] SN: Add support for CPU disable
Add additional support for CPU disable on SN platforms.
Correctly setup the smp_affinity mask for I/O error IRQs.
Restrict the use of the feature to Altix 4000 and 450 systems
running with a CPU disable capable PROM, and do not allow disabling
of CPU 0.
Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h
index 16adc93..7caa1f4 100644
--- a/include/asm-ia64/sn/arch.h
+++ b/include/asm-ia64/sn/arch.h
@@ -81,5 +81,6 @@
extern u8 sn_region_size;
extern void sn_flush_all_caches(long addr, long bytes);
+extern bool sn_cpu_disable_allowed(int cpu);
#endif /* _ASM_IA64_SN_ARCH_H */
diff --git a/include/asm-ia64/sn/intr.h b/include/asm-ia64/sn/intr.h
index 12b54dd..e0487aa 100644
--- a/include/asm-ia64/sn/intr.h
+++ b/include/asm-ia64/sn/intr.h
@@ -60,6 +60,7 @@
int, nasid_t, int);
extern void sn_intr_free(nasid_t, int, struct sn_irq_info *);
extern struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *, nasid_t, int);
+extern void sn_set_err_irq_affinity(unsigned int);
extern struct list_head **sn_irq_lh;
#define CPU_VECTOR_TO_IRQ(cpuid,vector) (vector)
diff --git a/include/asm-ia64/sn/sn_feature_sets.h b/include/asm-ia64/sn/sn_feature_sets.h
index bfdc362..8e83ac1 100644
--- a/include/asm-ia64/sn/sn_feature_sets.h
+++ b/include/asm-ia64/sn/sn_feature_sets.h
@@ -31,6 +31,7 @@
#define PRF_PAL_CACHE_FLUSH_SAFE 0
#define PRF_DEVICE_FLUSH_LIST 1
#define PRF_HOTPLUG_SUPPORT 2
+#define PRF_CPU_DISABLE_SUPPORT 3
/* --------------------- OS Features -------------------------------*/