diff options
Diffstat (limited to 'usr/src/uts/i86pc/sys/gipt.h')
| -rw-r--r-- | usr/src/uts/i86pc/sys/gipt.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/usr/src/uts/i86pc/sys/gipt.h b/usr/src/uts/i86pc/sys/gipt.h new file mode 100644 index 0000000000..4d7d523726 --- /dev/null +++ b/usr/src/uts/i86pc/sys/gipt.h @@ -0,0 +1,92 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2019 Joyent, Inc. + */ + +#ifndef _GIPT_H_ +#define _GIPT_H_ + +#include <sys/types.h> +#include <sys/mutex.h> +#include <sys/param.h> +#include <sys/list.h> + +struct gipt { + list_node_t gipt_node; + uint64_t gipt_vaddr; + uint64_t gipt_pfn; + uint16_t gipt_level; + uint16_t gipt_valid_cnt; + uint32_t _gipt_pad; + struct gipt *gipt_parent; + uint64_t *gipt_kva; + uint64_t _gipt_pad2; +}; +typedef struct gipt gipt_t; + +typedef enum { + PTET_EMPTY = 0, + PTET_PAGE = 1, + PTET_LINK = 2, +} gipt_pte_type_t; + +/* Given a PTE and its level, determine the type of that PTE */ +typedef gipt_pte_type_t (*gipt_pte_type_cb_t)(uint64_t, uint_t); +/* Given the PFN of a child table, emit a PTE that references it */ +typedef uint64_t (*gipt_pte_map_cb_t)(uint64_t); + +struct gipt_cbs { + gipt_pte_type_cb_t giptc_pte_type; + gipt_pte_map_cb_t giptc_pte_map; +}; + +struct gipt_map { + kmutex_t giptm_lock; + gipt_t *giptm_root; + list_t *giptm_hash; + struct gipt_cbs giptm_cbs; + size_t giptm_table_cnt; + uint_t giptm_levels; +}; +typedef struct gipt_map gipt_map_t; + +#define GIPT_HASH_SIZE_DEFAULT 0x2000 +#define GIPT_MAX_LEVELS 4 + +#define GIPT_VA2IDX(pt, va) \ + (((va) - (pt)->gipt_vaddr) >> \ + gipt_level_shift[(pt)->gipt_level]) + +#define GIPT_VA2PTE(pt, va) ((pt)->gipt_kva[GIPT_VA2IDX(pt, va)]) +#define GIPT_VA2PTEP(pt, va) (&(pt)->gipt_kva[GIPT_VA2IDX(pt, va)]) + +extern const uint_t gipt_level_shift[GIPT_MAX_LEVELS+1]; +extern const uint64_t gipt_level_mask[GIPT_MAX_LEVELS+1]; +extern const uint64_t gipt_level_size[GIPT_MAX_LEVELS+1]; +extern const uint64_t gipt_level_count[GIPT_MAX_LEVELS+1]; + +extern gipt_t *gipt_alloc(void); +extern void gipt_free(gipt_t *); +extern void gipt_map_init(gipt_map_t *, uint_t, uint_t, + const struct gipt_cbs *, gipt_t *); +extern void gipt_map_fini(gipt_map_t *); +extern gipt_t *gipt_map_lookup(gipt_map_t *, uint64_t, uint_t); +extern gipt_t *gipt_map_lookup_deepest(gipt_map_t *, uint64_t); +extern uint64_t gipt_map_next_page(gipt_map_t *, uint64_t, uint64_t, + gipt_t **); +extern void gipt_map_insert(gipt_map_t *, gipt_t *); +extern void gipt_map_remove(gipt_map_t *, gipt_t *); +extern gipt_t *gipt_map_create_parents(gipt_map_t *, uint64_t, uint_t); +extern void gipt_map_clean_parents(gipt_map_t *, gipt_t *); + +#endif /* _GIPT_H_ */ |