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1 | #ifndef _SBP_BASE_H |
2 | #define _SBP_BASE_H | |
3 | ||
4 | #include <linux/firewire.h> | |
5 | #include <linux/spinlock.h> | |
6 | #include <linux/types.h> | |
7 | #include <linux/workqueue.h> | |
8 | #include <target/target_core_base.h> | |
9 | ||
10 | #define SBP_VERSION "v0.1" | |
11 | #define SBP_NAMELEN 32 | |
12 | ||
13 | #define SBP_ORB_FETCH_SIZE 8 | |
14 | ||
15 | #define MANAGEMENT_AGENT_STATE_IDLE 0 | |
16 | #define MANAGEMENT_AGENT_STATE_BUSY 1 | |
17 | ||
18 | #define ORB_NOTIFY(v) (((v) >> 31) & 0x01) | |
19 | #define ORB_REQUEST_FORMAT(v) (((v) >> 29) & 0x03) | |
20 | ||
21 | #define MANAGEMENT_ORB_FUNCTION(v) (((v) >> 16) & 0x0f) | |
22 | ||
23 | #define MANAGEMENT_ORB_FUNCTION_LOGIN 0x0 | |
24 | #define MANAGEMENT_ORB_FUNCTION_QUERY_LOGINS 0x1 | |
25 | #define MANAGEMENT_ORB_FUNCTION_RECONNECT 0x3 | |
26 | #define MANAGEMENT_ORB_FUNCTION_SET_PASSWORD 0x4 | |
27 | #define MANAGEMENT_ORB_FUNCTION_LOGOUT 0x7 | |
28 | #define MANAGEMENT_ORB_FUNCTION_ABORT_TASK 0xb | |
29 | #define MANAGEMENT_ORB_FUNCTION_ABORT_TASK_SET 0xc | |
30 | #define MANAGEMENT_ORB_FUNCTION_LOGICAL_UNIT_RESET 0xe | |
31 | #define MANAGEMENT_ORB_FUNCTION_TARGET_RESET 0xf | |
32 | ||
33 | #define LOGIN_ORB_EXCLUSIVE(v) (((v) >> 28) & 0x01) | |
34 | #define LOGIN_ORB_RESERVED(v) (((v) >> 24) & 0x0f) | |
35 | #define LOGIN_ORB_RECONNECT(v) (((v) >> 20) & 0x0f) | |
36 | #define LOGIN_ORB_LUN(v) (((v) >> 0) & 0xffff) | |
37 | #define LOGIN_ORB_PASSWORD_LENGTH(v) (((v) >> 16) & 0xffff) | |
38 | #define LOGIN_ORB_RESPONSE_LENGTH(v) (((v) >> 0) & 0xffff) | |
39 | ||
40 | #define RECONNECT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff) | |
41 | #define LOGOUT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff) | |
42 | ||
43 | #define CMDBLK_ORB_DIRECTION(v) (((v) >> 27) & 0x01) | |
44 | #define CMDBLK_ORB_SPEED(v) (((v) >> 24) & 0x07) | |
45 | #define CMDBLK_ORB_MAX_PAYLOAD(v) (((v) >> 20) & 0x0f) | |
46 | #define CMDBLK_ORB_PG_TBL_PRESENT(v) (((v) >> 19) & 0x01) | |
47 | #define CMDBLK_ORB_PG_SIZE(v) (((v) >> 16) & 0x07) | |
48 | #define CMDBLK_ORB_DATA_SIZE(v) (((v) >> 0) & 0xffff) | |
49 | ||
50 | #define STATUS_BLOCK_SRC(v) (((v) & 0x03) << 30) | |
51 | #define STATUS_BLOCK_RESP(v) (((v) & 0x03) << 28) | |
52 | #define STATUS_BLOCK_DEAD(v) (((v) ? 1 : 0) << 27) | |
53 | #define STATUS_BLOCK_LEN(v) (((v) & 0x07) << 24) | |
54 | #define STATUS_BLOCK_SBP_STATUS(v) (((v) & 0xff) << 16) | |
55 | #define STATUS_BLOCK_ORB_OFFSET_HIGH(v) (((v) & 0xffff) << 0) | |
56 | ||
57 | #define STATUS_SRC_ORB_CONTINUING 0 | |
58 | #define STATUS_SRC_ORB_FINISHED 1 | |
59 | #define STATUS_SRC_UNSOLICITED 2 | |
60 | ||
61 | #define STATUS_RESP_REQUEST_COMPLETE 0 | |
62 | #define STATUS_RESP_TRANSPORT_FAILURE 1 | |
63 | #define STATUS_RESP_ILLEGAL_REQUEST 2 | |
64 | #define STATUS_RESP_VENDOR_DEPENDENT 3 | |
65 | ||
66 | #define SBP_STATUS_OK 0 | |
67 | #define SBP_STATUS_REQ_TYPE_NOTSUPP 1 | |
68 | #define SBP_STATUS_SPEED_NOTSUPP 2 | |
69 | #define SBP_STATUS_PAGE_SIZE_NOTSUPP 3 | |
70 | #define SBP_STATUS_ACCESS_DENIED 4 | |
71 | #define SBP_STATUS_LUN_NOTSUPP 5 | |
72 | #define SBP_STATUS_PAYLOAD_TOO_SMALL 6 | |
73 | /* 7 is reserved */ | |
74 | #define SBP_STATUS_RESOURCES_UNAVAIL 8 | |
75 | #define SBP_STATUS_FUNCTION_REJECTED 9 | |
76 | #define SBP_STATUS_LOGIN_ID_UNKNOWN 10 | |
77 | #define SBP_STATUS_DUMMY_ORB_COMPLETE 11 | |
78 | #define SBP_STATUS_REQUEST_ABORTED 12 | |
79 | #define SBP_STATUS_UNSPECIFIED_ERROR 0xff | |
80 | ||
81 | #define AGENT_STATE_RESET 0 | |
82 | #define AGENT_STATE_ACTIVE 1 | |
83 | #define AGENT_STATE_SUSPENDED 2 | |
84 | #define AGENT_STATE_DEAD 3 | |
85 | ||
86 | struct sbp2_pointer { | |
87 | __be32 high; | |
88 | __be32 low; | |
89 | }; | |
90 | ||
91 | struct sbp_command_block_orb { | |
92 | struct sbp2_pointer next_orb; | |
93 | struct sbp2_pointer data_descriptor; | |
94 | __be32 misc; | |
95 | u8 command_block[12]; | |
96 | }; | |
97 | ||
98 | struct sbp_page_table_entry { | |
99 | __be16 segment_length; | |
100 | __be16 segment_base_hi; | |
101 | __be32 segment_base_lo; | |
102 | }; | |
103 | ||
104 | struct sbp_management_orb { | |
105 | struct sbp2_pointer ptr1; | |
106 | struct sbp2_pointer ptr2; | |
107 | __be32 misc; | |
108 | __be32 length; | |
109 | struct sbp2_pointer status_fifo; | |
110 | }; | |
111 | ||
112 | struct sbp_status_block { | |
113 | __be32 status; | |
114 | __be32 orb_low; | |
115 | u8 data[24]; | |
116 | }; | |
117 | ||
118 | struct sbp_login_response_block { | |
119 | __be32 misc; | |
120 | struct sbp2_pointer command_block_agent; | |
121 | __be32 reconnect_hold; | |
122 | }; | |
123 | ||
124 | struct sbp_login_descriptor { | |
125 | struct sbp_session *sess; | |
126 | struct list_head link; | |
127 | ||
6bb82612 | 128 | u32 login_lun; |
a511ce33 CB |
129 | |
130 | u64 status_fifo_addr; | |
131 | int exclusive; | |
132 | u16 login_id; | |
133 | ||
134 | struct sbp_target_agent *tgt_agt; | |
135 | }; | |
136 | ||
137 | struct sbp_session { | |
138 | spinlock_t lock; | |
139 | struct se_session *se_sess; | |
140 | struct list_head login_list; | |
141 | struct delayed_work maint_work; | |
142 | ||
143 | u64 guid; /* login_owner_EUI_64 */ | |
144 | int node_id; /* login_owner_ID */ | |
145 | ||
146 | struct fw_card *card; | |
147 | int generation; | |
148 | int speed; | |
149 | ||
150 | int reconnect_hold; | |
151 | u64 reconnect_expires; | |
152 | }; | |
153 | ||
a511ce33 CB |
154 | struct sbp_tpg { |
155 | /* Target portal group tag for TCM */ | |
156 | u16 tport_tpgt; | |
157 | /* Pointer back to sbp_tport */ | |
158 | struct sbp_tport *tport; | |
159 | /* Returned by sbp_make_tpg() */ | |
160 | struct se_portal_group se_tpg; | |
161 | }; | |
162 | ||
163 | struct sbp_tport { | |
164 | /* Target Unit Identifier (EUI-64) */ | |
165 | u64 guid; | |
166 | /* Target port name */ | |
167 | char tport_name[SBP_NAMELEN]; | |
168 | /* Returned by sbp_make_tport() */ | |
169 | struct se_wwn tport_wwn; | |
170 | ||
171 | struct sbp_tpg *tpg; | |
172 | ||
173 | /* FireWire unit directory */ | |
174 | struct fw_descriptor unit_directory; | |
175 | ||
176 | /* SBP Management Agent */ | |
177 | struct sbp_management_agent *mgt_agt; | |
178 | ||
179 | /* Parameters */ | |
180 | int enable; | |
181 | s32 directory_id; | |
182 | int mgt_orb_timeout; | |
183 | int max_reconnect_timeout; | |
184 | int max_logins_per_lun; | |
185 | }; | |
186 | ||
187 | static inline u64 sbp2_pointer_to_addr(const struct sbp2_pointer *ptr) | |
188 | { | |
189 | return (u64)(be32_to_cpu(ptr->high) & 0x0000ffff) << 32 | | |
190 | (be32_to_cpu(ptr->low) & 0xfffffffc); | |
191 | } | |
192 | ||
193 | static inline void addr_to_sbp2_pointer(u64 addr, struct sbp2_pointer *ptr) | |
194 | { | |
195 | ptr->high = cpu_to_be32(addr >> 32); | |
196 | ptr->low = cpu_to_be32(addr); | |
197 | } | |
198 | ||
199 | struct sbp_target_agent { | |
200 | spinlock_t lock; | |
201 | struct fw_address_handler handler; | |
202 | struct sbp_login_descriptor *login; | |
203 | int state; | |
204 | struct work_struct work; | |
205 | u64 orb_pointer; | |
206 | bool doorbell; | |
207 | }; | |
208 | ||
209 | struct sbp_target_request { | |
210 | struct sbp_login_descriptor *login; | |
211 | u64 orb_pointer; | |
212 | struct sbp_command_block_orb orb; | |
213 | struct sbp_status_block status; | |
214 | struct work_struct work; | |
215 | ||
216 | struct se_cmd se_cmd; | |
217 | struct sbp_page_table_entry *pg_tbl; | |
218 | void *cmd_buf; | |
219 | ||
220 | unsigned char sense_buf[TRANSPORT_SENSE_BUFFER]; | |
221 | }; | |
222 | ||
223 | struct sbp_management_agent { | |
224 | spinlock_t lock; | |
225 | struct sbp_tport *tport; | |
226 | struct fw_address_handler handler; | |
227 | int state; | |
228 | struct work_struct work; | |
229 | u64 orb_offset; | |
230 | struct sbp_management_request *request; | |
231 | }; | |
232 | ||
233 | struct sbp_management_request { | |
234 | struct sbp_management_orb orb; | |
235 | struct sbp_status_block status; | |
236 | struct fw_card *card; | |
237 | int generation; | |
238 | int node_addr; | |
239 | int speed; | |
240 | }; | |
241 | ||
242 | #endif |