dmi.h 633 字节
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H. Peter Anvin 已提交
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#ifndef _ASM_X86_DMI_H
#define _ASM_X86_DMI_H
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#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;
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	if ((dmi_alloc_index + len) > DMI_MAX_DATA)
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		return NULL;
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	dmi_alloc_index += len;
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	return dmi_alloc_data + idx;
}

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/* Use early IO mappings for DMI because it's initialized early */
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#define dmi_ioremap early_ioremap
#define dmi_iounmap early_iounmap

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H. Peter Anvin 已提交
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#endif /* _ASM_X86_DMI_H */