LXR linux/drivers/infiniband/hw/hfi1/opa

   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
  73static 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
  78static 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 */
  95enum 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 */
 129