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Linux kernel mirror (for testing)
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kernel
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linux
1#ifndef _ASM_X86_DMI_H
2#define _ASM_X86_DMI_H
3
4#include <asm/io.h>
5
6#ifdef CONFIG_X86_32
7
8/* Use early IO mappings for DMI because it's initialized early */
9#define dmi_ioremap bt_ioremap
10#define dmi_iounmap bt_iounmap
11#define dmi_alloc alloc_bootmem
12
13#else /* CONFIG_X86_32 */
14
15#define DMI_MAX_DATA 2048
16
17extern int dmi_alloc_index;
18extern char dmi_alloc_data[DMI_MAX_DATA];
19
20/* This is so early that there is no good way to allocate dynamic memory.
21 Allocate data in an BSS array. */
22static inline void *dmi_alloc(unsigned len)
23{
24 int idx = dmi_alloc_index;
25 if ((dmi_alloc_index += len) > DMI_MAX_DATA)
26 return NULL;
27 return dmi_alloc_data + idx;
28}
29
30#define dmi_ioremap early_ioremap
31#define dmi_iounmap early_iounmap
32
33#endif
34
35#endif