50 строки
1.5 KiB
C
50 строки
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __PAT_INTERNAL_H_
|
|
#define __PAT_INTERNAL_H_
|
|
|
|
extern int pat_debug_enable;
|
|
|
|
#define dprintk(fmt, arg...) \
|
|
do { if (pat_debug_enable) pr_info("x86/PAT: " fmt, ##arg); } while (0)
|
|
|
|
struct memtype {
|
|
u64 start;
|
|
u64 end;
|
|
u64 subtree_max_end;
|
|
enum page_cache_mode type;
|
|
struct rb_node rb;
|
|
};
|
|
|
|
static inline char *cattr_name(enum page_cache_mode pcm)
|
|
{
|
|
switch (pcm) {
|
|
case _PAGE_CACHE_MODE_UC: return "uncached";
|
|
case _PAGE_CACHE_MODE_UC_MINUS: return "uncached-minus";
|
|
case _PAGE_CACHE_MODE_WB: return "write-back";
|
|
case _PAGE_CACHE_MODE_WC: return "write-combining";
|
|
case _PAGE_CACHE_MODE_WT: return "write-through";
|
|
case _PAGE_CACHE_MODE_WP: return "write-protected";
|
|
default: return "broken";
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_X86_PAT
|
|
extern int rbt_memtype_check_insert(struct memtype *new,
|
|
enum page_cache_mode *new_type);
|
|
extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
|
|
extern struct memtype *rbt_memtype_lookup(u64 addr);
|
|
extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
|
|
#else
|
|
static inline int rbt_memtype_check_insert(struct memtype *new,
|
|
enum page_cache_mode *new_type)
|
|
{ return 0; }
|
|
static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
|
|
{ return NULL; }
|
|
static inline struct memtype *rbt_memtype_lookup(u64 addr)
|
|
{ return NULL; }
|
|
static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
|
|
{ return 0; }
|
|
#endif
|
|
|
|
#endif /* __PAT_INTERNAL_H_ */
|