1/*
2 * This file is part of the Chelsio FCoE driver for Linux.
3 *
4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef __CSIO_DEFS_H__
36#define __CSIO_DEFS_H__
37
38#include <linux/kernel.h>
39#include <linux/stddef.h>
40#include <linux/timer.h>
41#include <linux/list.h>
42#include <linux/bug.h>
43#include <linux/pci.h>
44#include <linux/jiffies.h>
45
46#define CSIO_INVALID_IDX 0xFFFFFFFF
47#define CSIO_INC_STATS(elem, val) ((elem)->stats.val++)
48#define CSIO_DEC_STATS(elem, val) ((elem)->stats.val--)
49#define CSIO_VALID_WWN(__n) ((*__n >> 4) == 0x5 ? true : false)
50#define CSIO_DID_MASK 0xFFFFFF
51#define CSIO_WORD_TO_BYTE 4
52
53#ifndef readq
54static inline u64 readq(void __iomem *addr)
55{
56 return readl(addr) + ((u64)readl(addr + 4) << 32);
57}
58
59static inline void writeq(u64 val, void __iomem *addr)
60{
61 writel(val, addr);
62 writel(val >> 32, addr + 4);
63}
64#endif
65
66static inline int
67csio_list_deleted(struct list_head *list)
68{
69 return ((list->next == list) && (list->prev == list));
70}
71
72#define csio_list_next(elem) (((struct list_head *)(elem))->next)
73#define csio_list_prev(elem) (((struct list_head *)(elem))->prev)
74
75/* State machine */
76typedef void (*csio_sm_state_t)(void *, uint32_t);
77
78struct csio_sm {
79 struct list_head sm_list;
80 csio_sm_state_t sm_state;
81};
82
83static inline void
84csio_set_state(void *smp, void *state)
85{
86 ((struct csio_sm *)smp)->sm_state = (csio_sm_state_t)state;
87}
88
89static inline void
90csio_init_state(struct csio_sm *smp, void *state)
91{
92 csio_set_state(smp, state);
93}
94
95static inline void
96csio_post_event(void *smp, uint32_t evt)
97{
98 ((struct csio_sm *)smp)->sm_state(smp, evt);
99}
100
101static inline csio_sm_state_t
102csio_get_state(void *smp)
103{
104 return ((struct csio_sm *)smp)->sm_state;
105}
106
107static inline bool
108csio_match_state(void *smp, void *state)
109{
110 return (csio_get_state(smp) == (csio_sm_state_t)state);
111}
112
113#define CSIO_ASSERT(cond) BUG_ON(!(cond))
114
115#ifdef __CSIO_DEBUG__
116#define CSIO_DB_ASSERT(__c) CSIO_ASSERT((__c))
117#else
118#define CSIO_DB_ASSERT(__c)
119#endif
120
121#endif /* ifndef __CSIO_DEFS_H__ */
122

source code of linux/drivers/scsi/csiostor/csio_defs.h