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1/*
2 * Copyright 2014 Cisco Systems, Inc. All rights reserved.
3 *
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
16 */
17
18#ifndef __SNIC_STATS_H
19#define __SNIC_STATS_H
20
21struct snic_io_stats {
22 atomic64_t active; /* Active IOs */
23 atomic64_t max_active; /* Max # active IOs */
24 atomic64_t max_sgl; /* Max # SGLs for any IO */
25 atomic64_t max_time; /* Max time to process IO */
26 atomic64_t max_qtime; /* Max time to Queue the IO */
27 atomic64_t max_cmpl_time; /* Max time to complete the IO */
28 atomic64_t sgl_cnt[SNIC_MAX_SG_DESC_CNT]; /* SGL Counters */
29 atomic64_t max_io_sz; /* Max IO Size */
30 atomic64_t compl; /* IO Completions */
31 atomic64_t fail; /* IO Failures */
32 atomic64_t req_null; /* req or req info is NULL */
33 atomic64_t alloc_fail; /* Alloc Failures */
34 atomic64_t sc_null;
35 atomic64_t io_not_found; /* IO Not Found */
36 atomic64_t num_ios; /* Number of IOs */
37};
38
39struct snic_abort_stats {
40 atomic64_t num; /* Abort counter */
41 atomic64_t fail; /* Abort Failure Counter */
42 atomic64_t drv_tmo; /* Abort Driver Timeouts */
43 atomic64_t fw_tmo; /* Abort Firmware Timeouts */
44 atomic64_t io_not_found;/* Abort IO Not Found */
45 atomic64_t q_fail; /* Abort Queuing Failed */
46};
47
48struct snic_reset_stats {
49 atomic64_t dev_resets; /* Device Reset Counter */
50 atomic64_t dev_reset_fail; /* Device Reset Failures */
51 atomic64_t dev_reset_aborts; /* Device Reset Aborts */
52 atomic64_t dev_reset_tmo; /* Device Reset Timeout */
53 atomic64_t dev_reset_terms; /* Device Reset terminate */
54 atomic64_t hba_resets; /* hba/firmware resets */
55 atomic64_t hba_reset_cmpl; /* hba/firmware reset completions */
56 atomic64_t hba_reset_fail; /* hba/firmware failures */
57 atomic64_t snic_resets; /* snic resets */
58 atomic64_t snic_reset_compl; /* snic reset completions */
59 atomic64_t snic_reset_fail; /* snic reset failures */
60};
61
62struct snic_fw_stats {
63 atomic64_t actv_reqs; /* Active Requests */
64 atomic64_t max_actv_reqs; /* Max Active Requests */
65 atomic64_t out_of_res; /* Firmware Out Of Resources */
66 atomic64_t io_errs; /* Firmware IO Firmware Errors */
67 atomic64_t scsi_errs; /* Target hits check condition */
68};
69
70struct snic_misc_stats {
71 u64 last_isr_time;
72 u64 last_ack_time;
73 atomic64_t ack_isr_cnt;
74 atomic64_t cmpl_isr_cnt;
75 atomic64_t errnotify_isr_cnt;
76 atomic64_t max_cq_ents; /* Max CQ Entries */
77 atomic64_t data_cnt_mismat; /* Data Count Mismatch */
78 atomic64_t io_tmo;
79 atomic64_t io_aborted;
80 atomic64_t sgl_inval; /* SGL Invalid */
81 atomic64_t abts_wq_alloc_fail; /* Abort Path WQ desc alloc failure */
82 atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */
83 atomic64_t wq_alloc_fail; /* IO WQ desc alloc failure */
84 atomic64_t no_icmnd_itmf_cmpls;
85 atomic64_t io_under_run;
86 atomic64_t qfull;
87 atomic64_t qsz_rampup;
88 atomic64_t qsz_rampdown;
89 atomic64_t last_qsz;
90 atomic64_t tgt_not_rdy;
91};
92
93struct snic_stats {
94 struct snic_io_stats io;
95 struct snic_abort_stats abts;
96 struct snic_reset_stats reset;
97 struct snic_fw_stats fw;
98 struct snic_misc_stats misc;
99 atomic64_t io_cmpl_skip;
100};
101
102void snic_stats_debugfs_init(struct snic *);
103void snic_stats_debugfs_remove(struct snic *);
104
105/* Auxillary function to update active IO counter */
106static inline void
107snic_stats_update_active_ios(struct snic_stats *s_stats)
108{
109 struct snic_io_stats *io = &s_stats->io;
110 int nr_active_ios;
111
112 nr_active_ios = atomic64_read(&io->active);
113 if (atomic64_read(&io->max_active) < nr_active_ios)
114 atomic64_set(&io->max_active, nr_active_ios);
115
116 atomic64_inc(&io->num_ios);
117}
118
119/* Auxillary function to update IO completion counter */
120static inline void
121snic_stats_update_io_cmpl(struct snic_stats *s_stats)
122{
123 atomic64_dec(&s_stats->io.active);
124 if (unlikely(atomic64_read(&s_stats->io_cmpl_skip)))
125 atomic64_dec(&s_stats->io_cmpl_skip);
126 else
127 atomic64_inc(&s_stats->io.compl);
128}
129#endif /* __SNIC_STATS_H */