diff options
Diffstat (limited to 'arch/x86/include/asm/dmi.h')
| -rw-r--r-- | arch/x86/include/asm/dmi.h | 26 |
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 000000000000..1cff6fe81fa5 --- /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 */ |