1#ifndef TARGET_CORE_BACKEND_CONFIGFS_H
2#define TARGET_CORE_BACKEND_CONFIGFS_H
3
4#include <target/configfs_macros.h>
5
6#define DEF_TB_DEV_ATTRIB_SHOW(_backend, _name)				\
7static ssize_t _backend##_dev_show_attr_##_name(			\
8	struct se_dev_attrib *da,					\
9	char *page)							\
10{									\
11	return snprintf(page, PAGE_SIZE, "%u\n",			\
12			(u32)da->da_dev->dev_attrib._name);		\
13}
14
15#define DEF_TB_DEV_ATTRIB_STORE(_backend, _name)			\
16static ssize_t _backend##_dev_store_attr_##_name(			\
17	struct se_dev_attrib *da,					\
18	const char *page,						\
19	size_t count)							\
20{									\
21	unsigned long val;						\
22	int ret;							\
23									\
24	ret = kstrtoul(page, 0, &val);					\
25	if (ret < 0) {							\
26		pr_err("kstrtoul() failed with ret: %d\n", ret);	\
27		return -EINVAL;						\
28	}								\
29	ret = se_dev_set_##_name(da->da_dev, (u32)val);			\
30									\
31	return (!ret) ? count : -EINVAL;				\
32}
33
34#define DEF_TB_DEV_ATTRIB(_backend, _name)				\
35DEF_TB_DEV_ATTRIB_SHOW(_backend, _name);				\
36DEF_TB_DEV_ATTRIB_STORE(_backend, _name);
37
38#define DEF_TB_DEV_ATTRIB_RO(_backend, name)				\
39DEF_TB_DEV_ATTRIB_SHOW(_backend, name);
40
41CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib);
42#define TB_DEV_ATTR(_backend, _name, _mode)				\
43static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
44		__CONFIGFS_EATTR(_name, _mode,				\
45		_backend##_dev_show_attr_##_name,			\
46		_backend##_dev_store_attr_##_name);
47
48#define TB_DEV_ATTR_RO(_backend, _name)						\
49static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
50	__CONFIGFS_EATTR_RO(_name,					\
51	_backend##_dev_show_attr_##_name);
52
53/*
54 * Default list of target backend device attributes as defined by
55 * struct se_dev_attrib
56 */
57
58#define DEF_TB_DEFAULT_ATTRIBS(_backend)				\
59	DEF_TB_DEV_ATTRIB(_backend, emulate_model_alias);		\
60	TB_DEV_ATTR(_backend, emulate_model_alias, S_IRUGO | S_IWUSR);	\
61	DEF_TB_DEV_ATTRIB(_backend, emulate_dpo);			\
62	TB_DEV_ATTR(_backend, emulate_dpo, S_IRUGO | S_IWUSR);		\
63	DEF_TB_DEV_ATTRIB(_backend, emulate_fua_write);			\
64	TB_DEV_ATTR(_backend, emulate_fua_write, S_IRUGO | S_IWUSR);	\
65	DEF_TB_DEV_ATTRIB(_backend, emulate_fua_read);			\
66	TB_DEV_ATTR(_backend, emulate_fua_read, S_IRUGO | S_IWUSR);	\
67	DEF_TB_DEV_ATTRIB(_backend, emulate_write_cache);		\
68	TB_DEV_ATTR(_backend, emulate_write_cache, S_IRUGO | S_IWUSR);	\
69	DEF_TB_DEV_ATTRIB(_backend, emulate_ua_intlck_ctrl);		\
70	TB_DEV_ATTR(_backend, emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); \
71	DEF_TB_DEV_ATTRIB(_backend, emulate_tas);			\
72	TB_DEV_ATTR(_backend, emulate_tas, S_IRUGO | S_IWUSR);		\
73	DEF_TB_DEV_ATTRIB(_backend, emulate_tpu);			\
74	TB_DEV_ATTR(_backend, emulate_tpu, S_IRUGO | S_IWUSR);		\
75	DEF_TB_DEV_ATTRIB(_backend, emulate_tpws);			\
76	TB_DEV_ATTR(_backend, emulate_tpws, S_IRUGO | S_IWUSR);		\
77	DEF_TB_DEV_ATTRIB(_backend, emulate_caw);			\
78	TB_DEV_ATTR(_backend, emulate_caw, S_IRUGO | S_IWUSR);		\
79	DEF_TB_DEV_ATTRIB(_backend, emulate_3pc);			\
80	TB_DEV_ATTR(_backend, emulate_3pc, S_IRUGO | S_IWUSR);		\
81	DEF_TB_DEV_ATTRIB(_backend, pi_prot_type);			\
82	TB_DEV_ATTR(_backend, pi_prot_type, S_IRUGO | S_IWUSR);		\
83	DEF_TB_DEV_ATTRIB_RO(_backend, hw_pi_prot_type);		\
84	TB_DEV_ATTR_RO(_backend, hw_pi_prot_type);			\
85	DEF_TB_DEV_ATTRIB(_backend, pi_prot_format);			\
86	TB_DEV_ATTR(_backend, pi_prot_format, S_IRUGO | S_IWUSR);	\
87	DEF_TB_DEV_ATTRIB(_backend, enforce_pr_isids);			\
88	TB_DEV_ATTR(_backend, enforce_pr_isids, S_IRUGO | S_IWUSR);	\
89	DEF_TB_DEV_ATTRIB(_backend, is_nonrot);				\
90	TB_DEV_ATTR(_backend, is_nonrot, S_IRUGO | S_IWUSR);		\
91	DEF_TB_DEV_ATTRIB(_backend, emulate_rest_reord);		\
92	TB_DEV_ATTR(_backend, emulate_rest_reord, S_IRUGO | S_IWUSR);	\
93	DEF_TB_DEV_ATTRIB(_backend, force_pr_aptpl);			\
94	TB_DEV_ATTR(_backend, force_pr_aptpl, S_IRUGO | S_IWUSR);	\
95	DEF_TB_DEV_ATTRIB_RO(_backend, hw_block_size);			\
96	TB_DEV_ATTR_RO(_backend, hw_block_size);			\
97	DEF_TB_DEV_ATTRIB(_backend, block_size);			\
98	TB_DEV_ATTR(_backend, block_size, S_IRUGO | S_IWUSR);		\
99	DEF_TB_DEV_ATTRIB_RO(_backend, hw_max_sectors);			\
100	TB_DEV_ATTR_RO(_backend, hw_max_sectors);			\
101	DEF_TB_DEV_ATTRIB(_backend, optimal_sectors);			\
102	TB_DEV_ATTR(_backend, optimal_sectors, S_IRUGO | S_IWUSR);	\
103	DEF_TB_DEV_ATTRIB_RO(_backend, hw_queue_depth);			\
104	TB_DEV_ATTR_RO(_backend, hw_queue_depth);			\
105	DEF_TB_DEV_ATTRIB(_backend, queue_depth);			\
106	TB_DEV_ATTR(_backend, queue_depth, S_IRUGO | S_IWUSR);		\
107	DEF_TB_DEV_ATTRIB(_backend, max_unmap_lba_count);		\
108	TB_DEV_ATTR(_backend, max_unmap_lba_count, S_IRUGO | S_IWUSR);	\
109	DEF_TB_DEV_ATTRIB(_backend, max_unmap_block_desc_count);	\
110	TB_DEV_ATTR(_backend, max_unmap_block_desc_count, S_IRUGO | S_IWUSR); \
111	DEF_TB_DEV_ATTRIB(_backend, unmap_granularity);			\
112	TB_DEV_ATTR(_backend, unmap_granularity, S_IRUGO | S_IWUSR);	\
113	DEF_TB_DEV_ATTRIB(_backend, unmap_granularity_alignment);	\
114	TB_DEV_ATTR(_backend, unmap_granularity_alignment, S_IRUGO | S_IWUSR); \
115	DEF_TB_DEV_ATTRIB(_backend, max_write_same_len);		\
116	TB_DEV_ATTR(_backend, max_write_same_len, S_IRUGO | S_IWUSR);
117
118#endif /* TARGET_CORE_BACKEND_CONFIGFS_H */
119