1 #ifndef _LINUX_H
2 #define _LINUX_H
3 /*
4 * Copyright(c) 2015, 2016 Intel Corporation.
5 *
6 * This file is provided under a dual BSD/GPLv2 license. When using or
7 * redistributing this file, you may do so under either license.
8 *
9 * GPL LICENSE SUMMARY
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * BSD LICENSE
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 *
26 * - Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * - Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in
30 * the documentation and/or other materials provided with the
31 * distribution.
32 * - Neither the name of Intel Corporation nor the names of its
33 * contributors may be used to endorse or promote products derived
34 * from this software without specific prior written permission.
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 *
48 */
49
50 /*
51 * This header file is for OPA-specific definitions which are
52 * required by the HFI driver, and which aren't yet in the Linux
53 * IB core. We'll collect these all here, then merge them into
54 * the kernel when that's convenient.
55 */
56
57 /* OPA SMA attribute IDs */
58 #define OPA_ATTRIB_ID_CONGESTION_INFO cpu_to_be16(0x008b)
59 #define OPA_ATTRIB_ID_HFI_CONGESTION_LOG cpu_to_be16(0x008f)
60 #define OPA_ATTRIB_ID_HFI_CONGESTION_SETTING cpu_to_be16(0x0090)
61 #define OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE cpu_to_be16(0x0091)
62
63 /* OPA PMA attribute IDs */
64 #define OPA_PM_ATTRIB_ID_PORT_STATUS cpu_to_be16(0x0040)
65 #define OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS cpu_to_be16(0x0041)
66 #define OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS cpu_to_be16(0x0042)
67 #define OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS cpu_to_be16(0x0043)
68 #define OPA_PM_ATTRIB_ID_ERROR_INFO cpu_to_be16(0x0044)
69
70 /* OPA status codes */
71 #define OPA_PM_STATUS_REQUEST_TOO_LARGE cpu_to_be16(0x100)
72
73 static inline u8 port_states_to_logical_state(struct opa_port_states *ps)
74 {
75 return ps->portphysstate_portstate & OPA_PI_MASK_PORT_STATE;
76 }
77
78 static inline u8 port_states_to_phys_state(struct opa_port_states *ps)
79 {
80 return ((ps->portphysstate_portstate &
81 OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4) & 0xf;
82 }
83
84 /*
85 * OPA port physical states
86 * IB Volume 1, Table 146 PortInfo/IB Volume 2 Section 5.4.2(1) PortPhysState
87 * values are the same in OmniPath Architecture. OPA leverages some of the same
88 * concepts as InfiniBand, but has a few other states as well.
89 *
90 * When writing, only values 0-3 are valid, other values are ignored.
91 * When reading, 0 is reserved.
92 *
93 * Returned by the ibphys_portstate() routine.
94 */
95 enum opa_port_phys_state {
96 /* Values 0-7 have the same meaning in OPA as in InfiniBand. */
97
98 IB_PORTPHYSSTATE_NOP = 0,
99 /* 1 is reserved */
100 IB_PORTPHYSSTATE_POLLING = 2,
101 IB_PORTPHYSSTATE_DISABLED = 3,
102 IB_PORTPHYSSTATE_TRAINING = 4,
103 IB_PORTPHYSSTATE_LINKUP = 5,
104 IB_PORTPHYSSTATE_LINK_ERROR_RECOVERY = 6,
105 IB_PORTPHYSSTATE_PHY_TEST = 7,
106 /* 8 is reserved */
107
108 /*
109 * Offline: Port is quiet (transmitters disabled) due to lack of
110 * physical media, unsupported media, or transition between link up
111 * and next link up attempt
112 */
113 OPA_PORTPHYSSTATE_OFFLINE = 9,
114
115 /* 10 is reserved */
116
117 /*
118 * Phy_Test: Specific test patterns are transmitted, and receiver BER
119 * can be monitored. This facilitates signal integrity testing for the
120 * physical layer of the port.
121 */
122 OPA_PORTPHYSSTATE_TEST = 11,
123
124 OPA_PORTPHYSSTATE_MAX = 11,
125 /* values 12-15 are reserved/ignored */
126 };
127
128 #endif /* _LINUX_H */