drivers/infiniband/hw/ehca/ehca_hca.c

   1 /*
   2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
   3  *
   4  *  HCA query functions
   5  *
   6  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
   7  *           Christoph Raisch <raisch@de.ibm.com>
   8  *
   9  *  Copyright (c) 2005 IBM Corporation
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  14  *  BSD.
  15  *
  16  * OpenIB BSD License
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions are met:
  20  *
  21  * Redistributions of source code must retain the above copyright notice, this
  22  * list of conditions and the following disclaimer.
  23  *
  24  * Redistributions in binary form must reproduce the above copyright notice,
  25  * this list of conditions and the following disclaimer in the documentation
  26  * and/or other materials
  27  * provided with the distribution.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  33  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  36  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  37  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39  * POSSIBILITY OF SUCH DAMAGE.
  40  */
  41
  42 #include "ehca_tools.h"
  43 #include "ehca_iverbs.h"
  44 #include "hcp_if.h"
  45
  46 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
  47 {
  48         int ret = 0;
  49         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
  50                                               ib_device);
  51         struct hipz_query_hca *rblock;
  52
  53         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
  54         if (!rblock) {
  55                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
  56                 return -ENOMEM;
  57         }
  58
  59         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
  60                 ehca_err(&shca->ib_device, "Can't query device properties");
  61                 ret = -EINVAL;
  62                 goto query_device1;
  63         }
  64
  65         memset(props, 0, sizeof(struct ib_device_attr));
  66         props->fw_ver          = rblock->hw_ver;
  67         props->max_mr_size     = rblock->max_mr_size;
  68         props->vendor_id       = rblock->vendor_id >> 8;
  69         props->vendor_part_id  = rblock->vendor_part_id >> 16;
  70         props->hw_ver          = rblock->hw_ver;
  71         props->max_qp          = min_t(int, rblock->max_qp, INT_MAX);
  72         props->max_qp_wr       = min_t(int, rblock->max_wqes_wq, INT_MAX);
  73         props->max_sge         = min_t(int, rblock->max_sge, INT_MAX);
  74         props->max_sge_rd      = min_t(int, rblock->max_sge_rd, INT_MAX);
  75         props->max_cq          = min_t(int, rblock->max_cq, INT_MAX);
  76         props->max_cqe         = min_t(int, rblock->max_cqe, INT_MAX);
  77         props->max_mr          = min_t(int, rblock->max_mr, INT_MAX);
  78         props->max_mw          = min_t(int, rblock->max_mw, INT_MAX);
  79         props->max_pd          = min_t(int, rblock->max_pd, INT_MAX);
  80         props->max_ah          = min_t(int, rblock->max_ah, INT_MAX);
  81         props->max_fmr         = min_t(int, rblock->max_mr, INT_MAX);
  82         props->max_srq         = 0;
  83         props->max_srq_wr      = 0;
  84         props->max_srq_sge     = 0;
  85         props->max_pkeys       = 16;
  86         props->local_ca_ack_delay
  87                 = rblock->local_ca_ack_delay;
  88         props->max_raw_ipv6_qp
  89                 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
  90         props->max_raw_ethy_qp
  91                 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
  92         props->max_mcast_grp
  93                 = min_t(int, rblock->max_mcast_grp, INT_MAX);
  94         props->max_mcast_qp_attach
  95                 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
  96         props->max_total_mcast_qp_attach
  97                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
  98
  99 query_device1:
 100         ehca_free_fw_ctrlblock(rblock);
 101
 102         return ret;
 103 }
 104
 105 int ehca_query_port(struct ib_device *ibdev,
 106                     u8 port, struct ib_port_attr *props)
 107 {
 108         int ret = 0;
 109         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 110                                               ib_device);
 111         struct hipz_query_port *rblock;
 112
 113         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 114         if (!rblock) {
 115                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 116                 return -ENOMEM;
 117         }
 118
 119         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 120                 ehca_err(&shca->ib_device, "Can't query port properties");
 121                 ret = -EINVAL;
 122                 goto query_port1;
 123         }
 124
 125         memset(props, 0, sizeof(struct ib_port_attr));
 126         props->state = rblock->state;
 127
 128         switch (rblock->max_mtu) {
 129         case 0x1:
 130                 props->active_mtu = props->max_mtu = IB_MTU_256;
 131                 break;
 132         case 0x2:
 133                 props->active_mtu = props->max_mtu = IB_MTU_512;
 134                 break;
 135         case 0x3:
 136                 props->active_mtu = props->max_mtu = IB_MTU_1024;
 137                 break;
 138         case 0x4:
 139                 props->active_mtu = props->max_mtu = IB_MTU_2048;
 140                 break;
 141         case 0x5:
 142                 props->active_mtu = props->max_mtu = IB_MTU_4096;
 143                 break;
 144         default:
 145                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
 146                          rblock->max_mtu);
 147                 break;
 148         }
 149
 150         props->gid_tbl_len     = rblock->gid_tbl_len;
 151         props->max_msg_sz      = rblock->max_msg_sz;
 152         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
 153         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
 154         props->pkey_tbl_len    = rblock->pkey_tbl_len;
 155         props->lid             = rblock->lid;
 156         props->sm_lid          = rblock->sm_lid;
 157         props->lmc             = rblock->lmc;
 158         props->sm_sl           = rblock->sm_sl;
 159         props->subnet_timeout  = rblock->subnet_timeout;
 160         props->init_type_reply = rblock->init_type_reply;
 161
 162         props->active_width    = IB_WIDTH_12X;
 163         props->active_speed    = 0x1;
 164
 165 query_port1:
 166         ehca_free_fw_ctrlblock(rblock);
 167
 168         return ret;
 169 }
 170
 171 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 172 {
 173         int ret = 0;
 174         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
 175         struct hipz_query_port *rblock;
 176
 177         if (index > 16) {
 178                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 179                 return -EINVAL;
 180         }
 181
 182         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 183         if (!rblock) {
 184                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 185                 return -ENOMEM;
 186         }
 187
 188         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 189                 ehca_err(&shca->ib_device, "Can't query port properties");
 190                 ret = -EINVAL;
 191                 goto query_pkey1;
 192         }
 193
 194         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 195
 196 query_pkey1:
 197         ehca_free_fw_ctrlblock(rblock);
 198
 199         return ret;
 200 }
 201
 202 int ehca_query_gid(struct ib_device *ibdev, u8 port,
 203                    int index, union ib_gid *gid)
 204 {
 205         int ret = 0;
 206         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 207                                               ib_device);
 208         struct hipz_query_port *rblock;
 209
 210         if (index > 255) {
 211                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 212                 return -EINVAL;
 213         }
 214
 215         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 216         if (!rblock) {
 217                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 218                 return -ENOMEM;
 219         }
 220
 221         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 222                 ehca_err(&shca->ib_device, "Can't query port properties");
 223                 ret = -EINVAL;
 224                 goto query_gid1;
 225         }
 226
 227         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
 228         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 229
 230 query_gid1:
 231         ehca_free_fw_ctrlblock(rblock);
 232
 233         return ret;
 234 }
 235
 236 int ehca_modify_port(struct ib_device *ibdev,
 237                      u8 port, int port_modify_mask,
 238                      struct ib_port_modify *props)
 239 {
 240         /* Not implemented yet */
 241         return -EFAULT;
 242 }