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-rw-r--r--sys/sparc64/sbus/sbusreg.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/sparc64/sbus/sbusreg.h b/sys/sparc64/sbus/sbusreg.h
index 8b47d67..4dddce1 100644
--- a/sys/sparc64/sbus/sbusreg.h
+++ b/sys/sparc64/sbus/sbusreg.h
@@ -136,5 +136,7 @@
#define SBR_OBIO_DIAG 0x4808 /* OBIO and misc int state diag reg */
#define SBR_STRBUF_DIAG 0x5000 /* Streaming buffer diag regs */
-#endif /* _SPARC64_SBUS_SBUSREG_H_ */
+/* Width of the physical addresses the IOMMU translates to */
+#define SBUS_IOMMU_BITS 41
+#endif /* _SPARC64_SBUS_SBUSREG_H_ */
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