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-rw-r--r--drivers/scsi/lpfc/lpfc_sli.h216
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
new file mode 100644
index 000000000000..abd9a8c84e9e
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+++ b/drivers/scsi/lpfc/lpfc_sli.h
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1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Enterprise Fibre Channel Host Bus Adapters. *
4 * Refer to the README file included with this package for *
5 * driver version and adapter support. *
6 * Copyright (C) 2004 Emulex Corporation. *
7 * www.emulex.com *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of the GNU General Public License *
11 * as published by the Free Software Foundation; either version 2 *
12 * of the License, or (at your option) any later version. *
13 * *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details, a copy of which *
18 * can be found in the file COPYING included with this package. *
19 *******************************************************************/
20
21/*
22 * $Id: lpfc_sli.h 1.42 2005/03/21 02:01:28EST sf_support Exp $
23 */
24
25/* forward declaration for LPFC_IOCB_t's use */
26struct lpfc_hba;
27
28/* Define the context types that SLI handles for abort and sums. */
29typedef enum _lpfc_ctx_cmd {
30 LPFC_CTX_LUN,
31 LPFC_CTX_TGT,
32 LPFC_CTX_CTX,
33 LPFC_CTX_HOST
34} lpfc_ctx_cmd;
35
36/* This structure is used to handle IOCB requests / responses */
37struct lpfc_iocbq {
38 /* lpfc_iocbqs are used in double linked lists */
39 struct list_head list;
40 IOCB_t iocb; /* IOCB cmd */
41 uint8_t retry; /* retry counter for IOCB cmd - if needed */
42 uint8_t iocb_flag;
43#define LPFC_IO_POLL 1 /* Polling mode iocb */
44#define LPFC_IO_LIBDFC 2 /* libdfc iocb */
45#define LPFC_IO_WAIT 4
46#define LPFC_IO_HIPRI 8 /* High Priority Queue signal flag */
47
48 uint8_t abort_count;
49 uint8_t rsvd2;
50 uint32_t drvrTimeout; /* driver timeout in seconds */
51 void *context1; /* caller context information */
52 void *context2; /* caller context information */
53 void *context3; /* caller context information */
54 union {
55 wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait
56 queue */
57 struct lpfc_iocbq *rsp_iocb;
58 struct lpfcMboxq *mbox;
59 } context_un;
60
61 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
62 struct lpfc_iocbq *);
63
64};
65
66#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
67#define SLI_IOCB_HIGH_PRIORITY 2 /* High priority command */
68
69#define IOCB_SUCCESS 0
70#define IOCB_BUSY 1
71#define IOCB_ERROR 2
72#define IOCB_TIMEDOUT 3
73
74typedef struct lpfcMboxq {
75 /* MBOXQs are used in single linked lists */
76 struct list_head list; /* ptr to next mailbox command */
77 MAILBOX_t mb; /* Mailbox cmd */
78 void *context1; /* caller context information */
79 void *context2; /* caller context information */
80
81 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
82
83} LPFC_MBOXQ_t;
84
85#define MBX_POLL 1 /* poll mailbox till command done, then
86 return */
87#define MBX_NOWAIT 2 /* issue command then return immediately */
88#define MBX_STOP_IOCB 4 /* Stop iocb processing till mbox cmds
89 complete */
90
91#define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per
92 ring */
93#define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
94
95struct lpfc_sli_ring;
96
97struct lpfc_sli_ring_mask {
98 uint8_t profile; /* profile associated with ring */
99 uint8_t rctl; /* rctl / type pair configured for ring */
100 uint8_t type; /* rctl / type pair configured for ring */
101 uint8_t rsvd;
102 /* rcv'd unsol event */
103 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
104 struct lpfc_sli_ring *,
105 struct lpfc_iocbq *);
106};
107
108
109/* Structure used to hold SLI statistical counters and info */
110struct lpfc_sli_ring_stat {
111 uint64_t iocb_event; /* IOCB event counters */
112 uint64_t iocb_cmd; /* IOCB cmd issued */
113 uint64_t iocb_rsp; /* IOCB rsp received */
114 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
115 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
116 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
117 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
118};
119
120/* Structure used to hold SLI ring information */
121struct lpfc_sli_ring {
122 uint16_t flag; /* ring flags */
123#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
124#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
125#define LPFC_STOP_IOCB_MBX 0x010 /* Stop processing IOCB cmds mbox */
126#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
127#define LPFC_STOP_IOCB_MASK 0x030 /* Stop processing IOCB cmds mask */
128 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
129
130 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
131 uint32_t next_cmdidx; /* next_cmd index */
132 uint8_t rsvd;
133 uint8_t ringno; /* ring number */
134 uint8_t rspidx; /* current index in response ring */
135 uint8_t cmdidx; /* current index in command ring */
136 uint16_t numCiocb; /* number of command iocb's per ring */
137 uint16_t numRiocb; /* number of rsp iocb's per ring */
138
139 uint32_t fast_iotag; /* max fastlookup based iotag */
140 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
141 uint32_t iotag_max; /* max iotag value to use */
142 struct lpfc_iocbq ** fast_lookup; /* array of IOCB ptrs indexed by
143 iotag */
144 struct list_head txq;
145 uint16_t txq_cnt; /* current length of queue */
146 uint16_t txq_max; /* max length */
147 struct list_head txcmplq;
148 uint16_t txcmplq_cnt; /* current length of queue */
149 uint16_t txcmplq_max; /* max length */
150 uint32_t *cmdringaddr; /* virtual address for cmd rings */
151 uint32_t *rspringaddr; /* virtual address for rsp rings */
152 uint32_t missbufcnt; /* keep track of buffers to post */
153 struct list_head postbufq;
154 uint16_t postbufq_cnt; /* current length of queue */
155 uint16_t postbufq_max; /* max length */
156 struct list_head iocb_continueq;
157 uint16_t iocb_continueq_cnt; /* current length of queue */
158 uint16_t iocb_continueq_max; /* max length */
159
160 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
161 uint32_t num_mask; /* number of mask entries in prt array */
162
163 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
164
165 /* cmd ring available */
166 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
167 struct lpfc_sli_ring *);
168};
169
170/* Structure used to hold SLI statistical counters and info */
171struct lpfc_sli_stat {
172 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
173 uint64_t mbox_cmd; /* Mailbox commands issued */
174 uint64_t sli_intr; /* Count of Host Attention interrupts */
175 uint32_t err_attn_event; /* Error Attn event counters */
176 uint32_t link_event; /* Link event counters */
177 uint32_t mbox_event; /* Mailbox event counters */
178 uint32_t mbox_busy; /* Mailbox cmd busy */
179};
180
181/* Structure used to hold SLI information */
182struct lpfc_sli {
183 uint32_t num_rings;
184 uint32_t sli_flag;
185
186 /* Additional sli_flags */
187#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
188#define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */
189#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
190
191 struct lpfc_sli_ring ring[LPFC_MAX_RING];
192 int fcp_ring; /* ring used for FCP initiator commands */
193 int next_ring;
194
195 int ip_ring; /* ring used for IP network drv cmds */
196
197 struct lpfc_sli_stat slistat; /* SLI statistical info */
198 struct list_head mboxq;
199 uint16_t mboxq_cnt; /* current length of queue */
200 uint16_t mboxq_max; /* max length */
201 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
202
203 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
204 cmd */
205
206 uint32_t *MBhostaddr; /* virtual address for mbox cmds */
207};
208
209/* Given a pointer to the start of the ring, and the slot number of
210 * the desired iocb entry, calc a pointer to that entry.
211 * (assume iocb entry size is 32 bytes, or 8 words)
212 */
213#define IOCB_ENTRY(ring,slot) ((IOCB_t *)(((char *)(ring)) + ((slot) * 32)))
214
215#define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
216 command */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-13 15:40:38 -0500