1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef __LINUX_BIO_H
20#define __LINUX_BIO_H
21#include <linux/highmem.h>
22#include <linux/mempool.h>
23/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
24#include <linux/ioprio.h>
25#include <asm/io.h>
26#if defined(BIO_VMERGE_MAX_SIZE) && defined(BIO_VMERGE_BOUNDARY)
27#define BIOVEC_VIRT_START_SIZE(x) (bvec_to_phys(x) & (BIO_VMERGE_BOUNDARY - 1))
28/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
29#define BIOVEC_VIRT_OVERSIZE(x) ((x) > BIO_VMERGE_MAX_SIZE)
30#else
31#define BIOVEC_VIRT_START_SIZE(x) 0
32#define BIOVEC_VIRT_OVERSIZE(x) 0
33/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
34#endif
35#ifndef BIO_VMERGE_BOUNDARY
36#define BIO_VMERGE_BOUNDARY 0
37#endif
38/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
39#define BIO_DEBUG
40#ifdef BIO_DEBUG
41#define BIO_BUG_ON BUG_ON
42#else
43/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
44#define BIO_BUG_ON
45#endif
46#define BIO_MAX_PAGES 256
47#define BIO_MAX_SIZE (BIO_MAX_PAGES << PAGE_CACHE_SHIFT)
48/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
49#define BIO_MAX_SECTORS (BIO_MAX_SIZE >> 9)
50struct bio_vec {
51 struct page *bv_page;
52 unsigned int bv_len;
53/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
54 unsigned int bv_offset;
55};
56struct bio_set;
57struct bio;
58/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
59typedef int (bio_end_io_t) (struct bio *, unsigned int, int);
60typedef void (bio_destructor_t) (struct bio *);
61struct bio {
62 sector_t bi_sector;
63/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
64 struct bio *bi_next;
65 struct block_device *bi_bdev;
66 unsigned long bi_flags;
67 unsigned long bi_rw;
68/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
69 unsigned short bi_vcnt;
70 unsigned short bi_idx;
71 unsigned short bi_phys_segments;
72 unsigned short bi_hw_segments;
73/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
74 unsigned int bi_size;
75 unsigned int bi_hw_front_size;
76 unsigned int bi_hw_back_size;
77 unsigned int bi_max_vecs;
78/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
79 struct bio_vec *bi_io_vec;
80 bio_end_io_t *bi_end_io;
81 atomic_t bi_cnt;
82 void *bi_private;
83/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
84 bio_destructor_t *bi_destructor;
85};
86#define BIO_UPTODATE 0
87#define BIO_RW_BLOCK 1
88/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
89#define BIO_EOF 2
90#define BIO_SEG_VALID 3
91#define BIO_CLONED 4
92#define BIO_BOUNCED 5
93/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
94#define BIO_USER_MAPPED 6
95#define BIO_EOPNOTSUPP 7
96#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))
97#define BIO_POOL_BITS (4)
98/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
99#define BIO_POOL_OFFSET (BITS_PER_LONG - BIO_POOL_BITS)
100#define BIO_POOL_MASK (1UL << BIO_POOL_OFFSET)
101#define BIO_POOL_IDX(bio) ((bio)->bi_flags >> BIO_POOL_OFFSET)
102#define BIO_RW 0
103/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
104#define BIO_RW_AHEAD 1
105#define BIO_RW_BARRIER 2
106#define BIO_RW_FAILFAST 3
107#define BIO_RW_SYNC 4
108/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
109#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS)
110#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT)
111#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio))
112#define bio_set_prio(bio, prio) do {   WARN_ON(prio >= (1 << IOPRIO_BITS));   (bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1);   (bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT);  } while (0)
113/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
114#define bio_iovec_idx(bio, idx) (&((bio)->bi_io_vec[(idx)]))
115#define bio_iovec(bio) bio_iovec_idx((bio), (bio)->bi_idx)
116#define bio_page(bio) bio_iovec((bio))->bv_page
117#define bio_offset(bio) bio_iovec((bio))->bv_offset
118/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
119#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx)
120#define bio_sectors(bio) ((bio)->bi_size >> 9)
121#define bio_cur_sectors(bio) (bio_iovec(bio)->bv_len >> 9)
122#define bio_data(bio) (page_address(bio_page((bio))) + bio_offset((bio)))
123/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
124#define bio_barrier(bio) ((bio)->bi_rw & (1 << BIO_RW_BARRIER))
125#define bio_sync(bio) ((bio)->bi_rw & (1 << BIO_RW_SYNC))
126#define bio_failfast(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST))
127#define bio_rw_ahead(bio) ((bio)->bi_rw & (1 << BIO_RW_AHEAD))
128/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
129#define bio_to_phys(bio) (page_to_phys(bio_page((bio))) + (unsigned long) bio_offset((bio)))
130#define bvec_to_phys(bv) (page_to_phys((bv)->bv_page) + (unsigned long) (bv)->bv_offset)
131#define __bio_kmap_atomic(bio, idx, kmtype)   (kmap_atomic(bio_iovec_idx((bio), (idx))->bv_page, kmtype) +   bio_iovec_idx((bio), (idx))->bv_offset)
132#define __bio_kunmap_atomic(addr, kmtype) kunmap_atomic(addr, kmtype)
133/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
134#define __BVEC_END(bio) bio_iovec_idx((bio), (bio)->bi_vcnt - 1)
135#define __BVEC_START(bio) bio_iovec_idx((bio), (bio)->bi_idx)
136#ifndef BIOVEC_PHYS_MERGEABLE
137#define BIOVEC_PHYS_MERGEABLE(vec1, vec2)   ((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2)))
138/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
139#endif
140#define BIOVEC_VIRT_MERGEABLE(vec1, vec2)   ((((bvec_to_phys((vec1)) + (vec1)->bv_len) | bvec_to_phys((vec2))) & (BIO_VMERGE_BOUNDARY - 1)) == 0)
141#define __BIO_SEG_BOUNDARY(addr1, addr2, mask)   (((addr1) | (mask)) == (((addr2) - 1) | (mask)))
142#define BIOVEC_SEG_BOUNDARY(q, b1, b2)   __BIO_SEG_BOUNDARY(bvec_to_phys((b1)), bvec_to_phys((b2)) + (b2)->bv_len, (q)->seg_boundary_mask)
143/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
144#define BIO_SEG_BOUNDARY(q, b1, b2)   BIOVEC_SEG_BOUNDARY((q), __BVEC_END((b1)), __BVEC_START((b2)))
145#define bio_io_error(bio, bytes) bio_endio((bio), (bytes), -EIO)
146#define __bio_for_each_segment(bvl, bio, i, start_idx)   for (bvl = bio_iovec_idx((bio), (start_idx)), i = (start_idx);   i < (bio)->bi_vcnt;   bvl++, i++)
147#define bio_for_each_segment(bvl, bio, i)   __bio_for_each_segment(bvl, bio, i, (bio)->bi_idx)
148/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
149#define bio_get(bio) atomic_inc(&(bio)->bi_cnt)
150struct bio_pair {
151 struct bio bio1, bio2;
152 struct bio_vec bv1, bv2;
153/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
154 atomic_t cnt;
155 int error;
156};
157struct request_queue;
158/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
159struct sg_iovec;
160#define bvec_kmap_irq(bvec, flags) (page_address((bvec)->bv_page) + (bvec)->bv_offset)
161#define bvec_kunmap_irq(buf, flags) do { *(flags) = 0; } while (0)
162#define __bio_kunmap_irq(buf, flags) bvec_kunmap_irq(buf, flags)
163/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
164#define bio_kmap_irq(bio, flags)   __bio_kmap_irq((bio), (bio)->bi_idx, (flags))
165#define bio_kunmap_irq(buf,flags) __bio_kunmap_irq(buf, flags)
166#endif
167