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 "hcp_if.h"
  44
  45 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
  46 {
  47         int ret = 0;
  48         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
  49                                               ib_device);
  50         struct hipz_query_hca *rblock;
  51
  52         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
  53         if (!rblock) {
  54                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
  55                 return -ENOMEM;
  56         }
  57
  58         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
  59                 ehca_err(&shca->ib_device, "Can't query device properties");
  60                 ret = -EINVAL;
  61                 goto query_device1;
  62         }
  63
  64         memset(props, 0, sizeof(struct ib_device_attr));
  65         props->fw_ver          = rblock->hw_ver;
  66         props->max_mr_size     = rblock->max_mr_size;
  67         props->vendor_id       = rblock->vendor_id >> 8;
  68         props->vendor_part_id  = rblock->vendor_part_id >> 16;
  69         props->hw_ver          = rblock->hw_ver;
  70         props->max_qp          = min_t(int, rblock->max_qp, INT_MAX);
  71         props->max_qp_wr       = min_t(int, rblock->max_wqes_wq, INT_MAX);
  72         props->max_sge         = min_t(int, rblock->max_sge, INT_MAX);
  73         props->max_sge_rd      = min_t(int, rblock->max_sge_rd, INT_MAX);
  74         props->max_cq          = min_t(int, rblock->max_cq, INT_MAX);
  75         props->max_cqe         = min_t(int, rblock->max_cqe, INT_MAX);
  76         props->max_mr          = min_t(int, rblock->max_mr, INT_MAX);
  77         props->max_mw          = min_t(int, rblock->max_mw, INT_MAX);
  78         props->max_pd          = min_t(int, rblock->max_pd, INT_MAX);
  79         props->max_ah          = min_t(int, rblock->max_ah, INT_MAX);
  80         props->max_fmr         = min_t(int, rblock->max_mr, INT_MAX);
  81         props->max_srq         = 0;
  82         props->max_srq_wr      = 0;
  83         props->max_srq_sge     = 0;
  84         props->max_pkeys       = 16;
  85         props->local_ca_ack_delay
  86                 = rblock->local_ca_ack_delay;
  87         props->max_raw_ipv6_qp
  88                 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
  89         props->max_raw_ethy_qp
  90                 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
  91         props->max_mcast_grp
  92                 = min_t(int, rblock->max_mcast_grp, INT_MAX);
  93         props->max_mcast_qp_attach
  94                 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
  95         props->max_total_mcast_qp_attach
  96                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
  97
  98 query_device1:
  99         kfree(rblock);
 100
 101         return ret;
 102 }
 103
 104 int ehca_query_port(struct ib_device *ibdev,
 105                     u8 port, struct ib_port_attr *props)
 106 {
 107         int ret = 0;
 108         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 109                                               ib_device);
 110         struct hipz_query_port *rblock;
 111
 112         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 113         if (!rblock) {
 114                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 115                 return -ENOMEM;
 116         }
 117
 118         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 119                 ehca_err(&shca->ib_device, "Can't query port properties");
 120                 ret = -EINVAL;
 121                 goto query_port1;
 122         }
 123
 124         memset(props, 0, sizeof(struct ib_port_attr));
 125         props->state = rblock->state;
 126
 127         switch (rblock->max_mtu) {
 128         case 0x1:
 129                 props->active_mtu = props->max_mtu = IB_MTU_256;
 130                 break;
 131         case 0x2:
 132                 props->active_mtu = props->max_mtu = IB_MTU_512;
 133                 break;
 134         case 0x3:
 135                 props->active_mtu = props->max_mtu = IB_MTU_1024;
 136                 break;
 137         case 0x4:
 138                 props->active_mtu = props->max_mtu = IB_MTU_2048;
 139                 break;
 140         case 0x5:
 141                 props->active_mtu = props->max_mtu = IB_MTU_4096;
 142                 break;
 143         default:
 144                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
 145                          rblock->max_mtu);
 146                 break;
 147         }
 148
 149         props->gid_tbl_len     = rblock->gid_tbl_len;
 150         props->max_msg_sz      = rblock->max_msg_sz;
 151         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
 152         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
 153         props->pkey_tbl_len    = rblock->pkey_tbl_len;
 154         props->lid             = rblock->lid;
 155         props->sm_lid          = rblock->sm_lid;
 156         props->lmc             = rblock->lmc;
 157         props->sm_sl           = rblock->sm_sl;
 158         props->subnet_timeout  = rblock->subnet_timeout;
 159         props->init_type_reply = rblock->init_type_reply;
 160
 161         props->active_width    = IB_WIDTH_12X;
 162         props->active_speed    = 0x1;
 163
 164 query_port1:
 165         kfree(rblock);
 166
 167         return ret;
 168 }
 169
 170 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 171 {
 172         int ret = 0;
 173         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
 174         struct hipz_query_port *rblock;
 175
 176         if (index > 16) {
 177                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 178                 return -EINVAL;
 179         }
 180
 181         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 182         if (!rblock) {
 183                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 184                 return -ENOMEM;
 185         }
 186
 187         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 188                 ehca_err(&shca->ib_device, "Can't query port properties");
 189                 ret = -EINVAL;
 190                 goto query_pkey1;
 191         }
 192
 193         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 194
 195 query_pkey1:
 196         kfree(rblock);
 197
 198         return ret;
 199 }
 200
 201 int ehca_query_gid(struct ib_device *ibdev, u8 port,
 202                    int index, union ib_gid *gid)
 203 {
 204         int ret = 0;
 205         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 206                                               ib_device);
 207         struct hipz_query_port *rblock;
 208
 209         if (index > 255) {
 210                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 211                 return -EINVAL;
 212         }
 213
 214         rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 215         if (!rblock) {
 216                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 217                 return -ENOMEM;
 218         }
 219
 220         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
 221                 ehca_err(&shca->ib_device, "Can't query port properties");
 222                 ret = -EINVAL;
 223                 goto query_gid1;
 224         }
 225
 226         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
 227         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 228
 229 query_gid1:
 230         kfree(rblock);
 231
 232         return ret;
 233 }
 234
 235 int ehca_modify_port(struct ib_device *ibdev,
 236                      u8 port, int port_modify_mask,
 237                      struct ib_port_modify *props)
 238 {
 239         /* Not implemented yet */
 240         return -EFAULT;
 241 }