1 /*-
2 * Copyright 2016-2023 Microchip Technology, Inc. and/or its subsidiaries.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26
27 #ifndef _PQI_HELPER_H
28 #define _PQI_HELPER_H
29
30
31 static inline uint64_t
pqisrc_increment_device_active_io(pqisrc_softstate_t * softs,pqi_scsi_dev_t * device)32 pqisrc_increment_device_active_io(pqisrc_softstate_t *softs, pqi_scsi_dev_t *device)
33 {
34 #if PQISRC_DEVICE_IO_COUNTER
35 /*Increment device active io count by one*/
36 return OS_ATOMIC64_INC(&device->active_requests);
37 #endif
38 }
39
40 static inline uint64_t
pqisrc_decrement_device_active_io(pqisrc_softstate_t * softs,pqi_scsi_dev_t * device)41 pqisrc_decrement_device_active_io(pqisrc_softstate_t *softs, pqi_scsi_dev_t *device)
42 {
43 #if PQISRC_DEVICE_IO_COUNTER
44 /*Decrement device active io count by one*/
45 return OS_ATOMIC64_DEC(&device->active_requests);
46 #endif
47 }
48
49 static inline void
pqisrc_init_device_active_io(pqisrc_softstate_t * softs,pqi_scsi_dev_t * device)50 pqisrc_init_device_active_io(pqisrc_softstate_t *softs, pqi_scsi_dev_t *device)
51 {
52 #if PQISRC_DEVICE_IO_COUNTER
53 /* Reset device count to Zero */
54 OS_ATOMIC64_INIT(&device->active_requests, 0);
55 #endif
56 }
57
58 static inline uint64_t
pqisrc_read_device_active_io(pqisrc_softstate_t * softs,pqi_scsi_dev_t * device)59 pqisrc_read_device_active_io(pqisrc_softstate_t *softs, pqi_scsi_dev_t *device)
60 {
61 #if PQISRC_DEVICE_IO_COUNTER
62 /* read device active count*/
63 return OS_ATOMIC64_READ(&device->active_requests);
64 #endif
65 }
66 #endif /* _PQI_HELPER_H */
67