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 /* This structure is used to handle IOCB requests / responses */
34 /* lpfc_iocbqs are used in double linked lists */
35 struct list_head list;
36 uint16_t iotag; /* pre-assigned IO tag */
39 IOCB_t iocb; /* IOCB cmd */
40 uint8_t retry; /* retry counter for IOCB cmd - if needed */
42 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */
43 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */
44 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */
45 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */
46 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */
47 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */
51 uint32_t drvrTimeout; /* driver timeout in seconds */
52 struct lpfc_vport *vport;/* virtual port pointer */
53 void *context1; /* caller context information */
54 void *context2; /* caller context information */
55 void *context3; /* caller context information */
57 wait_queue_head_t *wait_queue;
58 struct lpfc_iocbq *rsp_iocb;
59 struct lpfcMboxq *mbox;
60 struct lpfc_nodelist *ndlp;
63 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
65 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
70 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
72 #define IOCB_SUCCESS 0
75 #define IOCB_TIMEDOUT 3
77 #define LPFC_MBX_WAKE 1
78 #define LPFC_MBX_IMED_UNREG 2
80 typedef struct lpfcMboxq {
81 /* MBOXQs are used in single linked lists */
82 struct list_head list; /* ptr to next mailbox command */
83 MAILBOX_t mb; /* Mailbox cmd */
84 struct lpfc_vport *vport;/* virutal port pointer */
85 void *context1; /* caller context information */
86 void *context2; /* caller context information */
88 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
93 #define MBX_POLL 1 /* poll mailbox till command done, then
95 #define MBX_NOWAIT 2 /* issue command then return immediately */
97 #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per
99 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
101 struct lpfc_sli_ring;
103 struct lpfc_sli_ring_mask {
104 uint8_t profile; /* profile associated with ring */
105 uint8_t rctl; /* rctl / type pair configured for ring */
106 uint8_t type; /* rctl / type pair configured for ring */
108 /* rcv'd unsol event */
109 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
110 struct lpfc_sli_ring *,
111 struct lpfc_iocbq *);
115 /* Structure used to hold SLI statistical counters and info */
116 struct lpfc_sli_ring_stat {
117 uint64_t iocb_event; /* IOCB event counters */
118 uint64_t iocb_cmd; /* IOCB cmd issued */
119 uint64_t iocb_rsp; /* IOCB rsp received */
120 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
121 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
122 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
123 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
126 /* Structure used to hold SLI ring information */
127 struct lpfc_sli_ring {
128 uint16_t flag; /* ring flags */
129 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
130 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
131 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
132 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
134 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
135 uint32_t next_cmdidx; /* next_cmd index */
136 uint32_t rspidx; /* current index in response ring */
137 uint32_t cmdidx; /* current index in command ring */
139 uint8_t ringno; /* ring number */
140 uint16_t numCiocb; /* number of command iocb's per ring */
141 uint16_t numRiocb; /* number of rsp iocb's per ring */
142 uint16_t sizeCiocb; /* Size of command iocb's in this ring */
143 uint16_t sizeRiocb; /* Size of response iocb's in this ring */
145 uint32_t fast_iotag; /* max fastlookup based iotag */
146 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
147 uint32_t iotag_max; /* max iotag value to use */
148 struct list_head txq;
149 uint16_t txq_cnt; /* current length of queue */
150 uint16_t txq_max; /* max length */
151 struct list_head txcmplq;
152 uint16_t txcmplq_cnt; /* current length of queue */
153 uint16_t txcmplq_max; /* max length */
154 uint32_t *cmdringaddr; /* virtual address for cmd rings */
155 uint32_t *rspringaddr; /* virtual address for rsp rings */
156 uint32_t missbufcnt; /* keep track of buffers to post */
157 struct list_head postbufq;
158 uint16_t postbufq_cnt; /* current length of queue */
159 uint16_t postbufq_max; /* max length */
160 struct list_head iocb_continueq;
161 uint16_t iocb_continueq_cnt; /* current length of queue */
162 uint16_t iocb_continueq_max; /* max length */
164 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
165 uint32_t num_mask; /* number of mask entries in prt array */
166 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
167 struct lpfc_sli_ring *, struct lpfc_iocbq *);
169 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
171 /* cmd ring available */
172 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
173 struct lpfc_sli_ring *);
176 /* Structure used for configuring rings to a specific profile or rctl / type */
177 struct lpfc_hbq_init {
178 uint32_t rn; /* Receive buffer notification */
179 uint32_t entry_count; /* max # of entries in HBQ */
180 uint32_t headerLen; /* 0 if not profile 4 or 5 */
181 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
182 uint32_t profile; /* Selection profile 0=all, 7=logentry */
183 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
185 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
191 uint32_t cmdmatch[8];
192 uint32_t mask_count; /* number of mask entries in prt array */
193 struct hbq_mask hbqMasks[6];
195 /* Non-config rings fields to keep track of buffer allocations */
196 uint32_t buffer_count; /* number of buffers allocated */
197 uint32_t init_count; /* number to allocate when initialized */
198 uint32_t add_count; /* number to allocate when starved */
201 /* Structure used to hold SLI statistical counters and info */
202 struct lpfc_sli_stat {
203 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
204 uint64_t mbox_cmd; /* Mailbox commands issued */
205 uint64_t sli_intr; /* Count of Host Attention interrupts */
206 uint32_t err_attn_event; /* Error Attn event counters */
207 uint32_t link_event; /* Link event counters */
208 uint32_t mbox_event; /* Mailbox event counters */
209 uint32_t mbox_busy; /* Mailbox cmd busy */
212 /* Structure to store link status values when port stats are reset */
213 struct lpfc_lnk_stat {
214 uint32_t link_failure_count;
215 uint32_t loss_of_sync_count;
216 uint32_t loss_of_signal_count;
217 uint32_t prim_seq_protocol_err_count;
218 uint32_t invalid_tx_word_count;
219 uint32_t invalid_crc_count;
220 uint32_t error_frames;
221 uint32_t link_events;
224 /* Structure used to hold SLI information */
229 /* Additional sli_flags */
230 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
231 #define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */
232 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
233 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
235 struct lpfc_sli_ring ring[LPFC_MAX_RING];
236 int fcp_ring; /* ring used for FCP initiator commands */
239 int extra_ring; /* extra ring used for other protocols */
241 struct lpfc_sli_stat slistat; /* SLI statistical info */
242 struct list_head mboxq;
243 uint16_t mboxq_cnt; /* current length of queue */
244 uint16_t mboxq_max; /* max length */
245 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
246 struct list_head mboxq_cmpl;
248 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
251 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
252 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
253 size_t iocbq_lookup_len; /* current lengs of the array */
254 uint16_t last_iotag; /* last allocated IOTAG */
255 unsigned long stats_start; /* in seconds */
256 struct lpfc_lnk_stat lnk_stat_offsets;
259 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
261 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
262 * or erase cmds. This is especially
263 * long because of the potential of
264 * multiple flash erases that can be