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 
31 static 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 
36 static 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  */
53 enum 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