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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-15 11:31:54 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-15 11:31:54 +1100
commit6dc6472581f693b5fc95aebedf67b4960fb85cf0 (patch)
tree06a5a9a08519950575505273eabced331ed51405 /include/asm-x86/numaq/wakecpu.h
parentpowerpc: Fix CHRP PCI config access for indirect_pci (diff)
parentMerge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux (diff)
downloadlinux-dev-6dc6472581f693b5fc95aebedf67b4960fb85cf0.tar.xz
linux-dev-6dc6472581f693b5fc95aebedf67b4960fb85cf0.zip
Merge commit 'origin'
Manual fixup of conflicts on: arch/powerpc/include/asm/dcr-regs.h drivers/net/ibm_newemac/core.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 000000000000..c577bda5b1c5
--- /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 */