/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
 * Copyright (c) 2014 Intel Corporation.  All rights reserved.
 */

#ifndef OPA_SMI_H
#define OPA_SMI_H

#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>

#define OPA_SMP_LID_DATA_SIZE                   2016
#define OPA_SMP_DR_DATA_SIZE                    1872
#define OPA_SMP_MAX_PATH_HOPS                   64

#define OPA_MAX_VLS                             32
#define OPA_MAX_SLS                             32
#define OPA_MAX_SCS                             32

#define OPA_LID_PERMISSIVE                      cpu_to_be32(0xFFFFFFFF)

struct opa_smp {
        u8      base_version;
        u8      mgmt_class;
        u8      class_version;
        u8      method;
        __be16  status;
        u8      hop_ptr;
        u8      hop_cnt;
        __be64  tid;
        __be16  attr_id;
        __be16  resv;
        __be32  attr_mod;
        __be64  mkey;
        union {
                struct {
                        uint8_t data[OPA_SMP_LID_DATA_SIZE];
                } lid;
                struct {
                        __be32  dr_slid;
                        __be32  dr_dlid;
                        u8      initial_path[OPA_SMP_MAX_PATH_HOPS];
                        u8      return_path[OPA_SMP_MAX_PATH_HOPS];
                        u8      reserved[8];
                        u8      data[OPA_SMP_DR_DATA_SIZE];
                } dr;
        } route;
} __packed;


/* Subnet management attributes */
/* ... */
#define OPA_ATTRIB_ID_NODE_DESCRIPTION          cpu_to_be16(0x0010)
#define OPA_ATTRIB_ID_NODE_INFO                 cpu_to_be16(0x0011)
#define OPA_ATTRIB_ID_PORT_INFO                 cpu_to_be16(0x0015)
#define OPA_ATTRIB_ID_PARTITION_TABLE           cpu_to_be16(0x0016)
#define OPA_ATTRIB_ID_SL_TO_SC_MAP              cpu_to_be16(0x0017)
#define OPA_ATTRIB_ID_VL_ARBITRATION            cpu_to_be16(0x0018)
#define OPA_ATTRIB_ID_SM_INFO                   cpu_to_be16(0x0020)
#define OPA_ATTRIB_ID_CABLE_INFO                cpu_to_be16(0x0032)
#define OPA_ATTRIB_ID_AGGREGATE                 cpu_to_be16(0x0080)
#define OPA_ATTRIB_ID_SC_TO_SL_MAP              cpu_to_be16(0x0082)
#define OPA_ATTRIB_ID_SC_TO_VLR_MAP             cpu_to_be16(0x0083)
#define OPA_ATTRIB_ID_SC_TO_VLT_MAP             cpu_to_be16(0x0084)
#define OPA_ATTRIB_ID_SC_TO_VLNT_MAP            cpu_to_be16(0x0085)
/* ... */
#define OPA_ATTRIB_ID_PORT_STATE_INFO           cpu_to_be16(0x0087)
/* ... */
#define OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE      cpu_to_be16(0x008A)
/* ... */

struct opa_node_description {
        u8 data[64];
} __packed;

struct opa_node_info {
        u8      base_version;
        u8      class_version;
        u8      node_type;
        u8      num_ports;
        __be32  reserved;
        __be64  system_image_guid;
        __be64  node_guid;
        __be64  port_guid;
        __be16  partition_cap;
        __be16  device_id;
        __be32  revision;
        u8      local_port_num;
        u8      vendor_id[3];   /* network byte order */
} __packed;

#define OPA_PARTITION_TABLE_BLK_SIZE 32

static inline u8
opa_get_smp_direction(struct opa_smp *smp)
{
        return ib_get_smp_direction((struct ib_smp *)smp);
}

static inline u8 *opa_get_smp_data(struct opa_smp *smp)
{
        if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
                return smp->route.dr.data;

        return smp->route.lid.data;
}

static inline size_t opa_get_smp_data_size(struct opa_smp *smp)
{
        if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
                return sizeof(smp->route.dr.data);

        return sizeof(smp->route.lid.data);
}

static inline size_t opa_get_smp_header_size(struct opa_smp *smp)
{
        if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
                return sizeof(*smp) - sizeof(smp->route.dr.data);

        return sizeof(*smp) - sizeof(smp->route.lid.data);
}

#endif /* OPA_SMI_H */