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Commit | Line | Data |
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41fa2ada | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Global definitions for the zfcp device driver. |
41fa2ada | 5 | * |
615f59e0 | 6 | * Copyright IBM Corporation 2002, 2010 |
41fa2ada | 7 | */ |
1da177e4 | 8 | |
1da177e4 LT |
9 | #ifndef ZFCP_DEF_H |
10 | #define ZFCP_DEF_H | |
11 | ||
1da177e4 LT |
12 | /*************************** INCLUDES *****************************************/ |
13 | ||
14 | #include <linux/init.h> | |
15 | #include <linux/moduleparam.h> | |
1da177e4 LT |
16 | #include <linux/major.h> |
17 | #include <linux/blkdev.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/timer.h> | |
dd52e0ea HC |
20 | #include <linux/slab.h> |
21 | #include <linux/mempool.h> | |
22 | #include <linux/syscalls.h> | |
f1346372 | 23 | #include <linux/scatterlist.h> |
dd52e0ea | 24 | #include <linux/ioctl.h> |
9d544f2b SS |
25 | #include <scsi/fc/fc_fs.h> |
26 | #include <scsi/fc/fc_gs.h> | |
1da177e4 LT |
27 | #include <scsi/scsi.h> |
28 | #include <scsi/scsi_tcq.h> | |
29 | #include <scsi/scsi_cmnd.h> | |
30 | #include <scsi/scsi_device.h> | |
31 | #include <scsi/scsi_host.h> | |
32 | #include <scsi/scsi_transport.h> | |
33 | #include <scsi/scsi_transport_fc.h> | |
9d544f2b | 34 | #include <scsi/scsi_bsg_fc.h> |
1da177e4 | 35 | #include <asm/ccwdev.h> |
1da177e4 LT |
36 | #include <asm/debug.h> |
37 | #include <asm/ebcdic.h> | |
bd43a42b | 38 | #include <asm/sysinfo.h> |
dd52e0ea | 39 | #include "zfcp_fsf.h" |
2d1e547f | 40 | #include "zfcp_fc.h" |
34c2b712 | 41 | #include "zfcp_qdio.h" |
1da177e4 | 42 | |
b6bd2fb9 | 43 | struct zfcp_reqlist; |
1da177e4 | 44 | |
06506d00 | 45 | /********************* SCSI SPECIFIC DEFINES *********************************/ |
f6c0e7a7 | 46 | #define ZFCP_SCSI_ER_TIMEOUT (10*HZ) |
1da177e4 | 47 | |
1da177e4 LT |
48 | /********************* FSF SPECIFIC DEFINES *********************************/ |
49 | ||
1da177e4 LT |
50 | /* ATTENTION: value must not be used by hardware */ |
51 | #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 | |
22753fa5 | 52 | |
1da177e4 | 53 | /* timeout value for "default timer" for fsf requests */ |
2abbe866 | 54 | #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ) |
1da177e4 | 55 | |
1da177e4 LT |
56 | /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ |
57 | ||
41fa2ada SS |
58 | /* |
59 | * Note, the leftmost status byte is common among adapter, port | |
1da177e4 LT |
60 | * and unit |
61 | */ | |
62 | #define ZFCP_COMMON_FLAGS 0xfff00000 | |
1da177e4 LT |
63 | |
64 | /* common status bits */ | |
1da177e4 LT |
65 | #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 |
66 | #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 | |
67 | #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 | |
1da177e4 | 68 | #define ZFCP_STATUS_COMMON_OPEN 0x04000000 |
1da177e4 LT |
69 | #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 |
70 | #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 | |
d736a27b | 71 | #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 |
cc8c2829 | 72 | #define ZFCP_STATUS_COMMON_NOESC 0x00200000 |
1da177e4 LT |
73 | |
74 | /* adapter status */ | |
75 | #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 | |
1da177e4 LT |
76 | #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 |
77 | #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 | |
1da177e4 LT |
78 | #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 |
79 | #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 | |
dcc18f48 | 80 | #define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400 |
1da177e4 | 81 | |
1da177e4 LT |
82 | /* remote port status */ |
83 | #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 | |
14e242ea | 84 | #define ZFCP_STATUS_PORT_LINK_TEST 0x00000002 |
1da177e4 | 85 | |
1da177e4 | 86 | /* logical unit status */ |
1da177e4 LT |
87 | #define ZFCP_STATUS_UNIT_SHARED 0x00000004 |
88 | #define ZFCP_STATUS_UNIT_READONLY 0x00000008 | |
89 | ||
90 | /* FSF request status (this does not have a common part) */ | |
1da177e4 | 91 | #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 |
1da177e4 LT |
92 | #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 |
93 | #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 | |
1da177e4 LT |
94 | #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 |
95 | #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 | |
1da177e4 | 96 | #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 |
1da177e4 LT |
97 | #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 |
98 | ||
1da177e4 LT |
99 | /************************* STRUCTURE DEFINITIONS *****************************/ |
100 | ||
101 | struct zfcp_fsf_req; | |
102 | ||
103 | /* holds various memory pools of an adapter */ | |
104 | struct zfcp_adapter_mempool { | |
a4623c46 | 105 | mempool_t *erp_req; |
799b76d0 | 106 | mempool_t *gid_pn_req; |
a4623c46 SS |
107 | mempool_t *scsi_req; |
108 | mempool_t *scsi_abort; | |
109 | mempool_t *status_read_req; | |
110 | mempool_t *status_read_data; | |
dbf5dfe9 | 111 | mempool_t *gid_pn; |
a4623c46 | 112 | mempool_t *qtcb_pool; |
1da177e4 LT |
113 | }; |
114 | ||
1da177e4 LT |
115 | struct zfcp_erp_action { |
116 | struct list_head list; | |
117 | int action; /* requested action code */ | |
118 | struct zfcp_adapter *adapter; /* device which should be recovered */ | |
119 | struct zfcp_port *port; | |
120 | struct zfcp_unit *unit; | |
44cc76f2 | 121 | u32 status; /* recovery status */ |
1da177e4 | 122 | u32 step; /* active step of this erp action */ |
e60a6d69 | 123 | unsigned long fsf_req_id; |
1da177e4 LT |
124 | struct timer_list timer; |
125 | }; | |
126 | ||
c9615858 CS |
127 | struct fsf_latency_record { |
128 | u32 min; | |
129 | u32 max; | |
130 | u64 sum; | |
131 | }; | |
132 | ||
133 | struct latency_cont { | |
134 | struct fsf_latency_record channel; | |
135 | struct fsf_latency_record fabric; | |
136 | u64 counter; | |
137 | }; | |
138 | ||
139 | struct zfcp_latencies { | |
140 | struct latency_cont read; | |
141 | struct latency_cont write; | |
142 | struct latency_cont cmd; | |
143 | spinlock_t lock; | |
144 | }; | |
1da177e4 LT |
145 | |
146 | struct zfcp_adapter { | |
f3450c7b | 147 | struct kref ref; |
7ba58c9c SS |
148 | u64 peer_wwnn; /* P2P peer WWNN */ |
149 | u64 peer_wwpn; /* P2P peer WWPN */ | |
13e1e1f0 | 150 | u32 peer_d_id; /* P2P peer D_ID */ |
1da177e4 | 151 | struct ccw_device *ccw_device; /* S/390 ccw device */ |
564e1c86 | 152 | struct zfcp_qdio *qdio; |
1da177e4 LT |
153 | u32 hydra_version; /* Hydra version */ |
154 | u32 fsf_lic_version; | |
aef4a983 MS |
155 | u32 adapter_features; /* FCP channel features */ |
156 | u32 connection_features; /* host connection features */ | |
1da177e4 | 157 | u32 hardware_version; /* of FCP channel */ |
c9615858 | 158 | u16 timer_ticks; /* time int for a tick */ |
1da177e4 | 159 | struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ |
ecf0c772 SS |
160 | struct list_head port_list; /* remote port list */ |
161 | rwlock_t port_list_lock; /* port list lock */ | |
fea9d6c7 | 162 | unsigned long req_no; /* unique FSF req number */ |
b6bd2fb9 | 163 | struct zfcp_reqlist *req_list; |
1da177e4 | 164 | u32 fsf_req_seq_no; /* FSF cmnd seq number */ |
1da177e4 LT |
165 | rwlock_t abort_lock; /* Protects against SCSI |
166 | stack abort/command | |
167 | completion races */ | |
d26ab06e | 168 | atomic_t stat_miss; /* # missing status reads*/ |
64deb6ef | 169 | unsigned int stat_read_buf_num; |
d26ab06e | 170 | struct work_struct stat_work; |
1da177e4 LT |
171 | atomic_t status; /* status of this adapter */ |
172 | struct list_head erp_ready_head; /* error recovery for this | |
173 | adapter/devices */ | |
347c6a96 | 174 | wait_queue_head_t erp_ready_wq; |
1da177e4 LT |
175 | struct list_head erp_running_head; |
176 | rwlock_t erp_lock; | |
1da177e4 LT |
177 | wait_queue_head_t erp_done_wqh; |
178 | struct zfcp_erp_action erp_action; /* pending error recovery */ | |
179 | atomic_t erp_counter; | |
180 | u32 erp_total_count; /* total nr of enqueued erp | |
181 | actions */ | |
182 | u32 erp_low_mem_count; /* nr of erp actions waiting | |
183 | for memory */ | |
347c6a96 | 184 | struct task_struct *erp_thread; |
bd0072ec | 185 | struct zfcp_fc_wka_ports *gs; /* generic services */ |
d46f384a | 186 | struct zfcp_dbf *dbf; /* debug traces */ |
1da177e4 | 187 | struct zfcp_adapter_mempool pool; /* Adapter memory pools */ |
f6cd94b1 AH |
188 | struct fc_host_statistics *fc_stats; |
189 | struct fsf_qtcb_bottom_port *stats_reset_data; | |
190 | unsigned long stats_reset; | |
cc8c2829 | 191 | struct work_struct scan_work; |
bd43a42b | 192 | struct service_level service_level; |
4544683a | 193 | struct workqueue_struct *work_queue; |
68322984 | 194 | struct device_dma_parameters dma_parms; |
2d1e547f | 195 | struct zfcp_fc_events events; |
1da177e4 LT |
196 | }; |
197 | ||
1da177e4 | 198 | struct zfcp_port { |
615f59e0 | 199 | struct device dev; |
3859f6a2 | 200 | struct fc_rport *rport; /* rport of fc transport class */ |
1da177e4 | 201 | struct list_head list; /* list of remote ports */ |
1da177e4 | 202 | struct zfcp_adapter *adapter; /* adapter used to access port */ |
ecf0c772 SS |
203 | struct list_head unit_list; /* head of logical unit list */ |
204 | rwlock_t unit_list_lock; /* unit list lock */ | |
1da177e4 | 205 | atomic_t status; /* status of this remote port */ |
7ba58c9c SS |
206 | u64 wwnn; /* WWNN if known */ |
207 | u64 wwpn; /* WWPN */ | |
13e1e1f0 | 208 | u32 d_id; /* D_ID */ |
1da177e4 LT |
209 | u32 handle; /* handle assigned by FSF */ |
210 | struct zfcp_erp_action erp_action; /* pending error recovery */ | |
211 | atomic_t erp_counter; | |
75bfc283 RW |
212 | u32 maxframe_size; |
213 | u32 supported_classes; | |
5ab944f9 | 214 | struct work_struct gid_pn_work; |
8fdf30d5 | 215 | struct work_struct test_link_work; |
a2fa0aed CS |
216 | struct work_struct rport_work; |
217 | enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task; | |
1bf3ff02 | 218 | unsigned int starget_id; |
1da177e4 LT |
219 | }; |
220 | ||
1da177e4 | 221 | struct zfcp_unit { |
615f59e0 | 222 | struct device dev; |
1da177e4 | 223 | struct list_head list; /* list of logical units */ |
1da177e4 LT |
224 | struct zfcp_port *port; /* remote port of unit */ |
225 | atomic_t status; /* status of this logical unit */ | |
7ba58c9c | 226 | u64 fcp_lun; /* own FCP_LUN */ |
1da177e4 LT |
227 | u32 handle; /* handle assigned by FSF */ |
228 | struct scsi_device *device; /* scsi device struct pointer */ | |
229 | struct zfcp_erp_action erp_action; /* pending error recovery */ | |
230 | atomic_t erp_counter; | |
c9615858 | 231 | struct zfcp_latencies latencies; |
92d5193b | 232 | struct work_struct scsi_work; |
1da177e4 LT |
233 | }; |
234 | ||
42428f74 SS |
235 | /** |
236 | * struct zfcp_fsf_req - basic FSF request structure | |
237 | * @list: list of FSF requests | |
238 | * @req_id: unique request ID | |
239 | * @adapter: adapter this request belongs to | |
34c2b712 | 240 | * @qdio_req: qdio queue related values |
42428f74 SS |
241 | * @completion: used to signal the completion of the request |
242 | * @status: status of the request | |
243 | * @fsf_command: FSF command issued | |
244 | * @qtcb: associated QTCB | |
245 | * @seq_no: sequence number of this request | |
246 | * @data: private data | |
247 | * @timer: timer data of this request | |
248 | * @erp_action: reference to erp action if request issued on behalf of ERP | |
249 | * @pool: reference to memory pool if used for this request | |
250 | * @issued: time when request was send (STCK) | |
251 | * @unit: reference to unit if this request is a SCSI request | |
252 | * @handler: handler which should be called to process response | |
253 | */ | |
1da177e4 | 254 | struct zfcp_fsf_req { |
42428f74 SS |
255 | struct list_head list; |
256 | unsigned long req_id; | |
257 | struct zfcp_adapter *adapter; | |
34c2b712 | 258 | struct zfcp_qdio_req qdio_req; |
42428f74 SS |
259 | struct completion completion; |
260 | u32 status; | |
261 | u32 fsf_command; | |
262 | struct fsf_qtcb *qtcb; | |
263 | u32 seq_no; | |
264 | void *data; | |
265 | struct timer_list timer; | |
266 | struct zfcp_erp_action *erp_action; | |
267 | mempool_t *pool; | |
268 | unsigned long long issued; | |
269 | struct zfcp_unit *unit; | |
c41f8cbd | 270 | void (*handler)(struct zfcp_fsf_req *); |
1da177e4 LT |
271 | }; |
272 | ||
1da177e4 LT |
273 | /* driver data */ |
274 | struct zfcp_data { | |
275 | struct scsi_host_template scsi_host_template; | |
dd52e0ea | 276 | struct scsi_transport_template *scsi_transport_template; |
a4623c46 SS |
277 | struct kmem_cache *gpn_ft_cache; |
278 | struct kmem_cache *qtcb_cache; | |
7ba58c9c SS |
279 | struct kmem_cache *sr_buffer_cache; |
280 | struct kmem_cache *gid_pn_cache; | |
ee744622 | 281 | struct kmem_cache *adisc_cache; |
1da177e4 LT |
282 | }; |
283 | ||
1da177e4 LT |
284 | /********************** ZFCP SPECIFIC DEFINES ********************************/ |
285 | ||
1da177e4 LT |
286 | #define ZFCP_SET 0x00000100 |
287 | #define ZFCP_CLEAR 0x00000200 | |
288 | ||
1da177e4 | 289 | #endif /* ZFCP_DEF_H */ |