Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 1 | #ifndef TARGET_CORE_BACKEND_H |
| 2 | #define TARGET_CORE_BACKEND_H |
| 3 | |
Andy Grover | a354170 | 2015-05-19 14:44:41 -0700 | [diff] [blame] | 4 | #define TRANSPORT_FLAG_PASSTHROUGH 1 |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 5 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame^] | 6 | struct target_backend_ops { |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 7 | char name[16]; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 8 | char inquiry_prod[16]; |
| 9 | char inquiry_rev[4]; |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 10 | struct module *owner; |
| 11 | |
Andy Grover | a354170 | 2015-05-19 14:44:41 -0700 | [diff] [blame] | 12 | u8 transport_flags; |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 13 | |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 14 | int (*attach_hba)(struct se_hba *, u32); |
| 15 | void (*detach_hba)(struct se_hba *); |
| 16 | int (*pmode_enable_hba)(struct se_hba *, unsigned long); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 17 | |
| 18 | struct se_device *(*alloc_device)(struct se_hba *, const char *); |
| 19 | int (*configure_device)(struct se_device *); |
| 20 | void (*free_device)(struct se_device *device); |
| 21 | |
| 22 | ssize_t (*set_configfs_dev_params)(struct se_device *, |
| 23 | const char *, ssize_t); |
| 24 | ssize_t (*show_configfs_dev_params)(struct se_device *, char *); |
| 25 | |
Paolo Bonzini | d5829ea | 2012-09-05 17:09:15 +0200 | [diff] [blame] | 26 | void (*transport_complete)(struct se_cmd *cmd, |
| 27 | struct scatterlist *, |
| 28 | unsigned char *); |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 29 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 30 | sense_reason_t (*parse_cdb)(struct se_cmd *cmd); |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 31 | u32 (*get_device_type)(struct se_device *); |
| 32 | sector_t (*get_blocks)(struct se_device *); |
Andy Grover | 7f7caf6 | 2013-11-11 08:59:17 -0800 | [diff] [blame] | 33 | sector_t (*get_alignment_offset_lbas)(struct se_device *); |
| 34 | /* lbppbe = logical blocks per physical block exponent. see SBC-3 */ |
| 35 | unsigned int (*get_lbppbe)(struct se_device *); |
| 36 | unsigned int (*get_io_min)(struct se_device *); |
| 37 | unsigned int (*get_io_opt)(struct se_device *); |
Christoph Hellwig | 5787cac | 2012-04-24 00:25:06 -0400 | [diff] [blame] | 38 | unsigned char *(*get_sense_buffer)(struct se_cmd *); |
Nicholas Bellinger | d0c8b25 | 2013-01-29 22:10:06 -0800 | [diff] [blame] | 39 | bool (*get_write_cache)(struct se_device *); |
Nicholas Bellinger | ce65e5b | 2013-12-23 20:28:13 +0000 | [diff] [blame] | 40 | int (*init_prot)(struct se_device *); |
| 41 | int (*format_prot)(struct se_device *); |
| 42 | void (*free_prot)(struct se_device *); |
Nicholas Bellinger | 73112ed | 2014-11-27 13:59:20 -0800 | [diff] [blame] | 43 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame^] | 44 | struct configfs_attribute **tb_dev_attrib_attrs; |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 45 | }; |
| 46 | |
Christoph Hellwig | 9e999a6 | 2012-10-07 10:55:50 -0400 | [diff] [blame] | 47 | struct sbc_ops { |
Nicholas Bellinger | a82a953 | 2013-08-19 23:57:30 -0700 | [diff] [blame] | 48 | sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *, |
| 49 | u32, enum dma_data_direction); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 50 | sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd); |
| 51 | sense_reason_t (*execute_write_same)(struct se_cmd *cmd); |
Nicholas Bellinger | cd063be | 2012-11-07 20:01:10 -0800 | [diff] [blame] | 52 | sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 53 | sense_reason_t (*execute_unmap)(struct se_cmd *cmd); |
Christoph Hellwig | 0c2ad7d | 2012-06-17 18:40:52 -0400 | [diff] [blame] | 54 | }; |
| 55 | |
Christoph Hellwig | 0a06d43 | 2015-05-10 18:14:56 +0200 | [diff] [blame^] | 56 | int transport_backend_register(const struct target_backend_ops *); |
| 57 | void target_backend_unregister(const struct target_backend_ops *); |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 58 | |
Christoph Hellwig | 6bb35e0 | 2012-04-23 11:35:33 -0400 | [diff] [blame] | 59 | void target_complete_cmd(struct se_cmd *, u8); |
Roland Dreier | 2426bd4 | 2014-06-10 11:07:47 -0700 | [diff] [blame] | 60 | void target_complete_cmd_with_length(struct se_cmd *, u8, int); |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 61 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 62 | sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size); |
| 63 | sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd); |
Hannes Reinecke | 0dfa1c5 | 2012-12-17 09:53:35 +0100 | [diff] [blame] | 64 | sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *); |
| 65 | sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *); |
Christoph Hellwig | d6e0175 | 2012-05-20 11:59:14 -0400 | [diff] [blame] | 66 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 67 | sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops); |
Christoph Hellwig | 6f23ac8 | 2012-10-07 10:55:53 -0400 | [diff] [blame] | 68 | u32 sbc_get_device_rev(struct se_device *dev); |
| 69 | u32 sbc_get_device_type(struct se_device *dev); |
Roland Dreier | 972b29c8 | 2013-02-22 09:52:57 -0800 | [diff] [blame] | 70 | sector_t sbc_get_write_same_sectors(struct se_cmd *cmd); |
Asias He | 86d7182 | 2013-02-25 14:03:46 +0800 | [diff] [blame] | 71 | sense_reason_t sbc_execute_unmap(struct se_cmd *cmd, |
| 72 | sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv, |
| 73 | sector_t lba, sector_t nolb), |
| 74 | void *priv); |
Nicholas Bellinger | 66a3d5b | 2014-04-02 14:19:09 -0700 | [diff] [blame] | 75 | void sbc_dif_generate(struct se_cmd *); |
Sagi Grimberg | f75b6fa | 2015-04-19 20:27:19 +0300 | [diff] [blame] | 76 | sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int, |
Nicholas Bellinger | 41861fa | 2014-01-07 22:44:57 +0000 | [diff] [blame] | 77 | unsigned int, struct scatterlist *, int); |
Sagi Grimberg | f75b6fa | 2015-04-19 20:27:19 +0300 | [diff] [blame] | 78 | void sbc_dif_copy_prot(struct se_cmd *, unsigned int, bool, |
| 79 | struct scatterlist *, int); |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 80 | void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); |
| 81 | int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); |
| 82 | int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); |
| 83 | int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); |
| 84 | |
| 85 | /* core helpers also used by command snooping in pscsi */ |
Andy Grover | 4949314 | 2012-01-16 16:57:08 -0800 | [diff] [blame] | 86 | void *transport_kmap_data_sg(struct se_cmd *); |
| 87 | void transport_kunmap_data_sg(struct se_cmd *); |
Nicholas Bellinger | c5ff8d6 | 2013-08-22 11:58:43 -0700 | [diff] [blame] | 88 | /* core helpers also used by xcopy during internal command setup */ |
| 89 | int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool); |
| 90 | sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, |
| 91 | struct scatterlist *, u32, struct scatterlist *, u32); |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 92 | |
Nicholas Bellinger | 29a05de | 2015-03-22 20:42:19 -0700 | [diff] [blame] | 93 | bool target_lun_is_rdonly(struct se_cmd *); |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 94 | |
Nicholas Bellinger | d30cd12 | 2014-11-27 19:15:48 -0800 | [diff] [blame] | 95 | /* attribute helpers from target_core_device.c for backend drivers */ |
Christophe Vu-Brugier | 9bc6548 | 2015-03-19 14:30:13 +0100 | [diff] [blame] | 96 | bool se_dev_check_wce(struct se_device *); |
Nicholas Bellinger | d30cd12 | 2014-11-27 19:15:48 -0800 | [diff] [blame] | 97 | int se_dev_set_max_unmap_lba_count(struct se_device *, u32); |
| 98 | int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32); |
| 99 | int se_dev_set_unmap_granularity(struct se_device *, u32); |
| 100 | int se_dev_set_unmap_granularity_alignment(struct se_device *, u32); |
| 101 | int se_dev_set_max_write_same_len(struct se_device *, u32); |
| 102 | int se_dev_set_emulate_model_alias(struct se_device *, int); |
| 103 | int se_dev_set_emulate_dpo(struct se_device *, int); |
| 104 | int se_dev_set_emulate_fua_write(struct se_device *, int); |
| 105 | int se_dev_set_emulate_fua_read(struct se_device *, int); |
| 106 | int se_dev_set_emulate_write_cache(struct se_device *, int); |
| 107 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int); |
| 108 | int se_dev_set_emulate_tas(struct se_device *, int); |
| 109 | int se_dev_set_emulate_tpu(struct se_device *, int); |
| 110 | int se_dev_set_emulate_tpws(struct se_device *, int); |
| 111 | int se_dev_set_emulate_caw(struct se_device *, int); |
| 112 | int se_dev_set_emulate_3pc(struct se_device *, int); |
| 113 | int se_dev_set_pi_prot_type(struct se_device *, int); |
| 114 | int se_dev_set_pi_prot_format(struct se_device *, int); |
| 115 | int se_dev_set_enforce_pr_isids(struct se_device *, int); |
| 116 | int se_dev_set_force_pr_aptpl(struct se_device *, int); |
| 117 | int se_dev_set_is_nonrot(struct se_device *, int); |
| 118 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int); |
| 119 | int se_dev_set_queue_depth(struct se_device *, u32); |
| 120 | int se_dev_set_max_sectors(struct se_device *, u32); |
Nicholas Bellinger | d30cd12 | 2014-11-27 19:15:48 -0800 | [diff] [blame] | 121 | int se_dev_set_optimal_sectors(struct se_device *, u32); |
| 122 | int se_dev_set_block_size(struct se_device *, u32); |
Andy Grover | 7bfea53b | 2015-05-19 14:44:40 -0700 | [diff] [blame] | 123 | sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd, |
| 124 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)); |
Nicholas Bellinger | d30cd12 | 2014-11-27 19:15:48 -0800 | [diff] [blame] | 125 | |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 126 | #endif /* TARGET_CORE_BACKEND_H */ |