1/*
2 * Copyright (C) from 2011
3 * Boaz Harrosh <ooo@electrozaur.com>
4 *
5 * This file is part of the objects raid engine (ore).
6 *
7 * It is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with "ore". If not, write to the Free Software Foundation, Inc:
13 *	"Free Software Foundation <info@fsf.org>"
14 */
15
16#include <scsi/osd_ore.h>
17
18#define ORE_ERR(fmt, a...) printk(KERN_ERR "ore: " fmt, ##a)
19
20#ifdef CONFIG_EXOFS_DEBUG
21#define ORE_DBGMSG(fmt, a...) \
22	printk(KERN_NOTICE "ore @%s:%d: " fmt, __func__, __LINE__, ##a)
23#else
24#define ORE_DBGMSG(fmt, a...) \
25	do { if (0) printk(fmt, ##a); } while (0)
26#endif
27
28/* u64 has problems with printk this will cast it to unsigned long long */
29#define _LLU(x) (unsigned long long)(x)
30
31#define ORE_DBGMSG2(M...) do {} while (0)
32/* #define ORE_DBGMSG2 ORE_DBGMSG */
33
34/* ios_raid.c stuff needed by ios.c */
35int _ore_post_alloc_raid_stuff(struct ore_io_state *ios);
36void _ore_free_raid_stuff(struct ore_io_state *ios);
37
38void _ore_add_sg_seg(struct ore_per_dev_state *per_dev, unsigned cur_len,
39		 bool not_last);
40int _ore_add_parity_unit(struct ore_io_state *ios, struct ore_striping_info *si,
41		     struct ore_per_dev_state *per_dev, unsigned cur_len,
42		     bool do_xor);
43void _ore_add_stripe_page(struct __stripe_pages_2d *sp2d,
44		       struct ore_striping_info *si, struct page *page);
45static inline void _add_stripe_page(struct __stripe_pages_2d *sp2d,
46				struct ore_striping_info *si, struct page *page)
47{
48	if (!sp2d) /* Inline the fast path */
49		return; /* Hay no raid stuff */
50	_ore_add_stripe_page(sp2d, si, page);
51}
52
53/* ios.c stuff needed by ios_raid.c */
54int  _ore_get_io_state(struct ore_layout *layout,
55			struct ore_components *oc, unsigned numdevs,
56			unsigned sgs_per_dev, unsigned num_par_pages,
57			struct ore_io_state **pios);
58int _ore_add_stripe_unit(struct ore_io_state *ios,  unsigned *cur_pg,
59		unsigned pgbase, struct page **pages,
60		struct ore_per_dev_state *per_dev, int cur_len);
61int _ore_read_mirror(struct ore_io_state *ios, unsigned cur_comp);
62int ore_io_execute(struct ore_io_state *ios);
63