tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#define dmi_alloc alloc_bootmem
9
10#else /* CONFIG_X86_32 */
11
12#define DMI_MAX_DATA 2048
13
14extern int dmi_alloc_index;
15extern char dmi_alloc_data[DMI_MAX_DATA];
16
17/* This is so early that there is no good way to allocate dynamic memory.
18 Allocate data in an BSS array. */
19static inline void *dmi_alloc(unsigned len)
20{
21 int idx = dmi_alloc_index;
22 if ((dmi_alloc_index + len) > DMI_MAX_DATA)
23 return NULL;
24 dmi_alloc_index += len;
25 return dmi_alloc_data + idx;
26}
27
28#endif
29
30/* Use early IO mappings for DMI because it's initialized early */
31#define dmi_ioremap early_ioremap
32#define dmi_iounmap early_iounmap
33
34#endif