[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / dmi.h

#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 */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_DMI_H
1965aae3 PA	2	#define _ASM_X86_DMI_H
327c21bc TG	3
	4	#include <asm/io.h>
	5
327c21bc TG	6	#define DMI_MAX_DATA 2048
	7
	8	extern int dmi_alloc_index;
	9	extern char dmi_alloc_data[DMI_MAX_DATA];
	10
	11	/* This is so early that there is no good way to allocate dynamic memory.
	12	Allocate data in an BSS array. */
	13	static inline void *dmi_alloc(unsigned len)
	14	{
	15	int idx = dmi_alloc_index;
bca25baf	16	if ((dmi_alloc_index + len) > DMI_MAX_DATA)
327c21bc	17	return NULL;
bca25baf	18	dmi_alloc_index += len;
327c21bc TG	19	return dmi_alloc_data + idx;
	20	}
	21
ef3fb66c	22	/* Use early IO mappings for DMI because it's initialized early */
327c21bc TG	23	#define dmi_ioremap early_ioremap
	24	#define dmi_iounmap early_iounmap
	25
1965aae3	26	#endif /* _ASM_X86_DMI_H */