1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2015, 2016 Intel Corporation.
4 */
5
6#ifndef _LINUX_H
7#define _LINUX_H
8/*
9 * This header file is for OPA-specific definitions which are
10 * required by the HFI driver, and which aren't yet in the Linux
11 * IB core. We'll collect these all here, then merge them into
12 * the kernel when that's convenient.
13 */
14
15/* OPA SMA attribute IDs */
16#define OPA_ATTRIB_ID_CONGESTION_INFO		cpu_to_be16(0x008b)
17#define OPA_ATTRIB_ID_HFI_CONGESTION_LOG	cpu_to_be16(0x008f)
18#define OPA_ATTRIB_ID_HFI_CONGESTION_SETTING	cpu_to_be16(0x0090)
19#define OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE	cpu_to_be16(0x0091)
20
21/* OPA PMA attribute IDs */
22#define OPA_PM_ATTRIB_ID_PORT_STATUS		cpu_to_be16(0x0040)
23#define OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS	cpu_to_be16(0x0041)
24#define OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS	cpu_to_be16(0x0042)
25#define OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS	cpu_to_be16(0x0043)
26#define OPA_PM_ATTRIB_ID_ERROR_INFO		cpu_to_be16(0x0044)
27
28/* OPA status codes */
29#define OPA_PM_STATUS_REQUEST_TOO_LARGE		cpu_to_be16(0x100)
30
31static inline u8 port_states_to_logical_state(struct opa_port_states *ps)
32{
33	return ps->portphysstate_portstate & OPA_PI_MASK_PORT_STATE;
34}
35
36static inline u8 port_states_to_phys_state(struct opa_port_states *ps)
37{
38	return ((ps->portphysstate_portstate &
39		  OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4) & 0xf;
40}
41
42/*
43 * OPA port physical states
44 * IB Volume 1, Table 146 PortInfo/IB Volume 2 Section 5.4.2(1) PortPhysState
45 * values are the same in OmniPath Architecture. OPA leverages some of the same
46 * concepts as InfiniBand, but has a few other states as well.
47 *
48 * When writing, only values 0-3 are valid, other values are ignored.
49 * When reading, 0 is reserved.
50 *
51 * Returned by the ibphys_portstate() routine.
52 */
53enum opa_port_phys_state {
54	/* Values 0-7 have the same meaning in OPA as in InfiniBand. */
55
56	IB_PORTPHYSSTATE_NOP = 0,
57	/* 1 is reserved */
58	IB_PORTPHYSSTATE_POLLING = 2,
59	IB_PORTPHYSSTATE_DISABLED = 3,
60	IB_PORTPHYSSTATE_TRAINING = 4,
61	IB_PORTPHYSSTATE_LINKUP = 5,
62	IB_PORTPHYSSTATE_LINK_ERROR_RECOVERY = 6,
63	IB_PORTPHYSSTATE_PHY_TEST = 7,
64	/* 8 is reserved */
65
66	/*
67	 * Offline: Port is quiet (transmitters disabled) due to lack of
68	 * physical media, unsupported media, or transition between link up
69	 * and next link up attempt
70	 */
71	OPA_PORTPHYSSTATE_OFFLINE = 9,
72
73	/* 10 is reserved */
74
75	/*
76	 * Phy_Test: Specific test patterns are transmitted, and receiver BER
77	 * can be monitored. This facilitates signal integrity testing for the
78	 * physical layer of the port.
79	 */
80	OPA_PORTPHYSSTATE_TEST = 11,
81
82	OPA_PORTPHYSSTATE_MAX = 11,
83	/* values 12-15 are reserved/ignored */
84};
85
86#endif /* _LINUX_H */
87