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 */
130