kernel/include/target/target_core_backend_configfs.h

   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)                         \
   7 static 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)                        \
  16 static 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)                              \
  35 DEF_TB_DEV_ATTRIB_SHOW(_backend, _name);                                \
  36 DEF_TB_DEV_ATTRIB_STORE(_backend, _name);
  37
  38 #define DEF_TB_DEV_ATTRIB_RO(_backend, name)                            \
  39 DEF_TB_DEV_ATTRIB_SHOW(_backend, name);
  40
  41 CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib);
  42 #define TB_DEV_ATTR(_backend, _name, _mode)                             \
  43 static 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)                                         \
  49 static 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 */