summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/numaq/wakecpu.h
diff options
context:
space:
mode:
authorDavid Woodhouse <David.Woodhouse@intel.com>2008-10-13 17:13:56 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2008-10-13 17:13:56 +0100
commite758936e02700ff88a0b08b722a3847b95283ef2 (patch)
tree50c919bef1b459a778b85159d5929de95b6c4a01 /include/asm-x86/numaq/wakecpu.h
parent239cfbde1f5843c4a24199f117d5f67f637d72d5 (diff)
parent4480f15b3306f43bbb0310d461142b4e897ca45b (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: include/asm-x86/statfs.h
Diffstat (limited to 'include/asm-x86/numaq/wakecpu.h')
-rw-r--r--include/asm-x86/numaq/wakecpu.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-x86/numaq/wakecpu.h b/include/asm-x86/numaq/wakecpu.h
new file mode 100644
index 00000000000..c577bda5b1c
--- /dev/null
+++ b/include/asm-x86/numaq/wakecpu.h
@@ -0,0 +1,43 @@
+#ifndef __ASM_NUMAQ_WAKECPU_H
+#define __ASM_NUMAQ_WAKECPU_H
+
+/* This file copes with machines that wakeup secondary CPUs by NMIs */
+
+#define WAKE_SECONDARY_VIA_NMI
+
+#define TRAMPOLINE_LOW phys_to_virt(0x8)
+#define TRAMPOLINE_HIGH phys_to_virt(0xa)
+
+#define boot_cpu_apicid boot_cpu_logical_apicid
+
+/* We don't do anything here because we use NMI's to boot instead */
+static inline void wait_for_init_deassert(atomic_t *deassert)
+{
+}
+
+/*
+ * Because we use NMIs rather than the INIT-STARTUP sequence to
+ * bootstrap the CPUs, the APIC may be in a weird state. Kick it.
+ */
+static inline void smp_callin_clear_local_apic(void)
+{
+ clear_local_APIC();
+}
+
+static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
+{
+ printk("Storing NMI vector\n");
+ *high = *((volatile unsigned short *) TRAMPOLINE_HIGH);
+ *low = *((volatile unsigned short *) TRAMPOLINE_LOW);
+}
+
+static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
+{
+ printk("Restoring NMI vector\n");
+ *((volatile unsigned short *) TRAMPOLINE_HIGH) = *high;
+ *((volatile unsigned short *) TRAMPOLINE_LOW) = *low;
+}
+
+#define inquire_remote_apic(apicid) {}
+
+#endif /* __ASM_NUMAQ_WAKECPU_H */