drivers/infiniband/hw/hfi1/opa_compat.h

   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 */