1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2007 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *******************************************************************/
21 /* forward declaration for LPFC_IOCB_t's use */
25 /* Define the context types that SLI handles for abort and sums. */
26 typedef enum _lpfc_ctx_cmd
{
32 struct lpfc_cq_event
{
33 struct list_head list
;
35 struct lpfc_mcqe mcqe_cmpl
;
36 struct lpfc_acqe_link acqe_link
;
37 struct lpfc_acqe_fcoe acqe_fcoe
;
38 struct lpfc_acqe_dcbx acqe_dcbx
;
39 struct lpfc_rcqe rcqe_cmpl
;
40 struct sli4_wcqe_xri_aborted wcqe_axri
;
41 struct lpfc_wcqe_complete wcqe_cmpl
;
45 /* This structure is used to handle IOCB requests / responses */
47 /* lpfc_iocbqs are used in double linked lists */
48 struct list_head list
;
49 struct list_head clist
;
50 uint16_t iotag
; /* pre-assigned IO tag */
51 uint16_t sli4_xritag
; /* pre-assigned XRI, (OXID) tag. */
52 struct lpfc_cq_event cq_event
;
54 IOCB_t iocb
; /* IOCB cmd */
55 uint8_t retry
; /* retry counter for IOCB cmd - if needed */
57 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */
58 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */
59 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */
60 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */
61 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */
62 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */
63 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */
64 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */
65 #define DSS_SECURITY_OP 0x100 /* security IO */
67 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */
68 #define LPFC_FIP_ELS_ID_SHIFT 14
71 uint32_t drvrTimeout
; /* driver timeout in seconds */
72 uint32_t fcp_wqidx
; /* index to FCP work queue */
73 struct lpfc_vport
*vport
;/* virtual port pointer */
74 void *context1
; /* caller context information */
75 void *context2
; /* caller context information */
76 void *context3
; /* caller context information */
78 wait_queue_head_t
*wait_queue
;
79 struct lpfc_iocbq
*rsp_iocb
;
80 struct lpfcMboxq
*mbox
;
81 struct lpfc_nodelist
*ndlp
;
84 void (*fabric_iocb_cmpl
) (struct lpfc_hba
*, struct lpfc_iocbq
*,
86 void (*iocb_cmpl
) (struct lpfc_hba
*, struct lpfc_iocbq
*,
90 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
92 #define IOCB_SUCCESS 0
95 #define IOCB_TIMEDOUT 3
97 #define LPFC_MBX_WAKE 1
98 #define LPFC_MBX_IMED_UNREG 2
100 typedef struct lpfcMboxq
{
101 /* MBOXQs are used in single linked lists */
102 struct list_head list
; /* ptr to next mailbox command */
104 MAILBOX_t mb
; /* Mailbox cmd */
107 struct lpfc_vport
*vport
;/* virtual port pointer */
108 void *context1
; /* caller context information */
109 void *context2
; /* caller context information */
111 void (*mbox_cmpl
) (struct lpfc_hba
*, struct lpfcMboxq
*);
113 uint16_t in_ext_byte_len
;
114 uint16_t out_ext_byte_len
;
115 uint8_t mbox_offset_word
;
116 struct lpfc_mcqe mcqe
;
117 struct lpfc_mbx_nembed_sge_virt
*sge_array
;
120 #define MBX_POLL 1 /* poll mailbox till command done, then
122 #define MBX_NOWAIT 2 /* issue command then return immediately */
124 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per
126 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
128 struct lpfc_sli_ring
;
130 struct lpfc_sli_ring_mask
{
131 uint8_t profile
; /* profile associated with ring */
132 uint8_t rctl
; /* rctl / type pair configured for ring */
133 uint8_t type
; /* rctl / type pair configured for ring */
135 /* rcv'd unsol event */
136 void (*lpfc_sli_rcv_unsol_event
) (struct lpfc_hba
*,
137 struct lpfc_sli_ring
*,
138 struct lpfc_iocbq
*);
142 /* Structure used to hold SLI statistical counters and info */
143 struct lpfc_sli_ring_stat
{
144 uint64_t iocb_event
; /* IOCB event counters */
145 uint64_t iocb_cmd
; /* IOCB cmd issued */
146 uint64_t iocb_rsp
; /* IOCB rsp received */
147 uint64_t iocb_cmd_delay
; /* IOCB cmd ring delay */
148 uint64_t iocb_cmd_full
; /* IOCB cmd ring full */
149 uint64_t iocb_cmd_empty
; /* IOCB cmd ring is now empty */
150 uint64_t iocb_rsp_full
; /* IOCB rsp ring full */
153 /* Structure used to hold SLI ring information */
154 struct lpfc_sli_ring
{
155 uint16_t flag
; /* ring flags */
156 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
157 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
158 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
159 uint16_t abtsiotag
; /* tracks next iotag to use for ABTS */
161 uint32_t local_getidx
; /* last available cmd index (from cmdGetInx) */
162 uint32_t next_cmdidx
; /* next_cmd index */
163 uint32_t rspidx
; /* current index in response ring */
164 uint32_t cmdidx
; /* current index in command ring */
166 uint8_t ringno
; /* ring number */
167 uint16_t numCiocb
; /* number of command iocb's per ring */
168 uint16_t numRiocb
; /* number of rsp iocb's per ring */
169 uint16_t sizeCiocb
; /* Size of command iocb's in this ring */
170 uint16_t sizeRiocb
; /* Size of response iocb's in this ring */
172 uint32_t fast_iotag
; /* max fastlookup based iotag */
173 uint32_t iotag_ctr
; /* keeps track of the next iotag to use */
174 uint32_t iotag_max
; /* max iotag value to use */
175 struct list_head txq
;
176 uint16_t txq_cnt
; /* current length of queue */
177 uint16_t txq_max
; /* max length */
178 struct list_head txcmplq
;
179 uint16_t txcmplq_cnt
; /* current length of queue */
180 uint16_t txcmplq_max
; /* max length */
181 uint32_t *cmdringaddr
; /* virtual address for cmd rings */
182 uint32_t *rspringaddr
; /* virtual address for rsp rings */
183 uint32_t missbufcnt
; /* keep track of buffers to post */
184 struct list_head postbufq
;
185 uint16_t postbufq_cnt
; /* current length of queue */
186 uint16_t postbufq_max
; /* max length */
187 struct list_head iocb_continueq
;
188 uint16_t iocb_continueq_cnt
; /* current length of queue */
189 uint16_t iocb_continueq_max
; /* max length */
190 struct list_head iocb_continue_saveq
;
192 struct lpfc_sli_ring_mask prt
[LPFC_MAX_RING_MASK
];
193 uint32_t num_mask
; /* number of mask entries in prt array */
194 void (*lpfc_sli_rcv_async_status
) (struct lpfc_hba
*,
195 struct lpfc_sli_ring
*, struct lpfc_iocbq
*);
197 struct lpfc_sli_ring_stat stats
; /* SLI statistical info */
199 /* cmd ring available */
200 void (*lpfc_sli_cmd_available
) (struct lpfc_hba
*,
201 struct lpfc_sli_ring
*);
204 /* Structure used for configuring rings to a specific profile or rctl / type */
205 struct lpfc_hbq_init
{
206 uint32_t rn
; /* Receive buffer notification */
207 uint32_t entry_count
; /* max # of entries in HBQ */
208 uint32_t headerLen
; /* 0 if not profile 4 or 5 */
209 uint32_t logEntry
; /* Set to 1 if this HBQ used for LogEntry */
210 uint32_t profile
; /* Selection profile 0=all, 7=logentry */
211 uint32_t ring_mask
; /* Binds HBQ to a ring e.g. Ring0=b0001,
213 uint32_t hbq_index
; /* index of this hbq in ring .HBQs[] */
219 uint32_t cmdmatch
[8];
220 uint32_t mask_count
; /* number of mask entries in prt array */
221 struct hbq_mask hbqMasks
[6];
223 /* Non-config rings fields to keep track of buffer allocations */
224 uint32_t buffer_count
; /* number of buffers allocated */
225 uint32_t init_count
; /* number to allocate when initialized */
226 uint32_t add_count
; /* number to allocate when starved */
229 /* Structure used to hold SLI statistical counters and info */
230 struct lpfc_sli_stat
{
231 uint64_t mbox_stat_err
; /* Mbox cmds completed status error */
232 uint64_t mbox_cmd
; /* Mailbox commands issued */
233 uint64_t sli_intr
; /* Count of Host Attention interrupts */
234 uint32_t err_attn_event
; /* Error Attn event counters */
235 uint32_t link_event
; /* Link event counters */
236 uint32_t mbox_event
; /* Mailbox event counters */
237 uint32_t mbox_busy
; /* Mailbox cmd busy */
240 /* Structure to store link status values when port stats are reset */
241 struct lpfc_lnk_stat
{
242 uint32_t link_failure_count
;
243 uint32_t loss_of_sync_count
;
244 uint32_t loss_of_signal_count
;
245 uint32_t prim_seq_protocol_err_count
;
246 uint32_t invalid_tx_word_count
;
247 uint32_t invalid_crc_count
;
248 uint32_t error_frames
;
249 uint32_t link_events
;
252 /* Structure used to hold SLI information */
257 /* Additional sli_flags */
258 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
259 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
260 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
261 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
262 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
263 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
265 struct lpfc_sli_ring ring
[LPFC_MAX_RING
];
266 int fcp_ring
; /* ring used for FCP initiator commands */
269 int extra_ring
; /* extra ring used for other protocols */
271 struct lpfc_sli_stat slistat
; /* SLI statistical info */
272 struct list_head mboxq
;
273 uint16_t mboxq_cnt
; /* current length of queue */
274 uint16_t mboxq_max
; /* max length */
275 LPFC_MBOXQ_t
*mbox_active
; /* active mboxq information */
276 struct list_head mboxq_cmpl
;
278 struct timer_list mbox_tmo
; /* Hold clk to timeout active mbox
281 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
282 struct lpfc_iocbq
** iocbq_lookup
; /* array to lookup IOCB by IOTAG */
283 size_t iocbq_lookup_len
; /* current lengs of the array */
284 uint16_t last_iotag
; /* last allocated IOTAG */
285 unsigned long stats_start
; /* in seconds */
286 struct lpfc_lnk_stat lnk_stat_offsets
;
289 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
291 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox
293 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
294 * or erase cmds. This is especially
295 * long because of the potential of
296 * multiple flash erases that can be