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authorAl Viro <viro@zeniv.linux.org.uk>2008-08-17 21:05:42 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-10-22 22:55:20 -0700
commitbb8985586b7a906e116db835c64773b7a7d51663 (patch)
treede93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/dmi.h
parent8ede0bdb63305d3353efd97e9af6210afb05734e (diff)
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/dmi.h')
-rw-r--r--arch/x86/include/asm/dmi.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/include/asm/dmi.h b/arch/x86/include/asm/dmi.h
new file mode 100644
index 00000000000..1cff6fe81fa
--- /dev/null
+++ b/arch/x86/include/asm/dmi.h
@@ -0,0 +1,26 @@
+#ifndef ASM_X86__DMI_H
+#define ASM_X86__DMI_H
+
+#include <asm/io.h>
+
+#define DMI_MAX_DATA 2048
+
+extern int dmi_alloc_index;
+extern char dmi_alloc_data[DMI_MAX_DATA];
+
+/* This is so early that there is no good way to allocate dynamic memory.
+ Allocate data in an BSS array. */
+static inline void *dmi_alloc(unsigned len)
+{
+ int idx = dmi_alloc_index;
+ if ((dmi_alloc_index + len) > DMI_MAX_DATA)
+ return NULL;
+ dmi_alloc_index += len;
+ return dmi_alloc_data + idx;
+}
+
+/* Use early IO mappings for DMI because it's initialized early */
+#define dmi_ioremap early_ioremap
+#define dmi_iounmap early_iounmap
+
+#endif /* ASM_X86__DMI_H */