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 i, ret = 0;
  49         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
  50                                               ib_device);
  51         struct hipz_query_hca *rblock;
  52
  53         static const u32 cap_mapping[] = {
  54                 IB_DEVICE_RESIZE_MAX_WR,      HCA_CAP_WQE_RESIZE,
  55                 IB_DEVICE_BAD_PKEY_CNTR,      HCA_CAP_BAD_P_KEY_CTR,
  56                 IB_DEVICE_BAD_QKEY_CNTR,      HCA_CAP_Q_KEY_VIOL_CTR,
  57                 IB_DEVICE_RAW_MULTI,          HCA_CAP_RAW_PACKET_MCAST,
  58                 IB_DEVICE_AUTO_PATH_MIG,      HCA_CAP_AUTO_PATH_MIG,
  59                 IB_DEVICE_CHANGE_PHY_PORT,    HCA_CAP_SQD_RTS_PORT_CHANGE,
  60                 IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK,
  61                 IB_DEVICE_CURR_QP_STATE_MOD,  HCA_CAP_CUR_QP_STATE_MOD,
  62                 IB_DEVICE_SHUTDOWN_PORT,      HCA_CAP_SHUTDOWN_PORT,
  63                 IB_DEVICE_INIT_TYPE,          HCA_CAP_INIT_TYPE,
  64                 IB_DEVICE_PORT_ACTIVE_EVENT,  HCA_CAP_PORT_ACTIVE_EVENT,
  65         };
  66
  67         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
  68         if (!rblock) {
  69                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
  70                 return -ENOMEM;
  71         }
  72
  73         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
  74                 ehca_err(&shca->ib_device, "Can't query device properties");
  75                 ret = -EINVAL;
  76                 goto query_device1;
  77         }
  78
  79         memset(props, 0, sizeof(struct ib_device_attr));
  80         props->fw_ver          = rblock->hw_ver;
  81         props->max_mr_size     = rblock->max_mr_size;
  82         props->vendor_id       = rblock->vendor_id >> 8;
  83         props->vendor_part_id  = rblock->vendor_part_id >> 16;
  84         props->hw_ver          = rblock->hw_ver;
  85         props->max_qp          = min_t(int, rblock->max_qp, INT_MAX);
  86         props->max_qp_wr       = min_t(int, rblock->max_wqes_wq, INT_MAX);
  87         props->max_sge         = min_t(int, rblock->max_sge, INT_MAX);
  88         props->max_sge_rd      = min_t(int, rblock->max_sge_rd, INT_MAX);
  89         props->max_cq          = min_t(int, rblock->max_cq, INT_MAX);
  90         props->max_cqe         = min_t(int, rblock->max_cqe, INT_MAX);
  91         props->max_mr          = min_t(int, rblock->max_mr, INT_MAX);
  92         props->max_mw          = min_t(int, rblock->max_mw, INT_MAX);
  93         props->max_pd          = min_t(int, rblock->max_pd, INT_MAX);
  94         props->max_ah          = min_t(int, rblock->max_ah, INT_MAX);
  95         props->max_fmr         = min_t(int, rblock->max_mr, INT_MAX);
  96         props->max_srq         = 0;
  97         props->max_srq_wr      = 0;
  98         props->max_srq_sge     = 0;
  99         props->max_pkeys       = 16;
 100         props->local_ca_ack_delay
 101                 = rblock->local_ca_ack_delay;
 102         props->max_raw_ipv6_qp
 103                 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
 104         props->max_raw_ethy_qp
 105                 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
 106         props->max_mcast_grp
 107                 = min_t(int, rblock->max_mcast_grp, INT_MAX);
 108         props->max_mcast_qp_attach
 109                 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
 110         props->max_total_mcast_qp_attach
 111                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
 112
 113         /* translate device capabilities */
 114         props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
 115                 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
 116         for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
 117                 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
 118                         props->device_cap_flags |= cap_mapping[i];
 119
 120 query_device1:
 121         ehca_free_fw_ctrlblock(rblock);
 122
 123         return ret;
 124 }
 125
 126 int ehca_query_port(struct ib_device *ibdev,
 127                     u8 port, struct ib_port_attr *props)
 128 {
 129         int ret = 0;
 130         u64 h_ret;
 131         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 132                                               ib_device);
 133         struct hipz_query_port *rblock;
 134
 135         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 136         if (!rblock) {
 137                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 138                 return -ENOMEM;
 139         }
 140
 141         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 142         if (h_ret != H_SUCCESS) {
 143                 ehca_err(&shca->ib_device, "Can't query port properties");
 144                 ret = -EINVAL;
 145                 goto query_port1;
 146         }
 147
 148         memset(props, 0, sizeof(struct ib_port_attr));
 149         props->state = rblock->state;
 150
 151         switch (rblock->max_mtu) {
 152         case 0x1:
 153                 props->active_mtu = props->max_mtu = IB_MTU_256;
 154                 break;
 155         case 0x2:
 156                 props->active_mtu = props->max_mtu = IB_MTU_512;
 157                 break;
 158         case 0x3:
 159                 props->active_mtu = props->max_mtu = IB_MTU_1024;
 160                 break;
 161         case 0x4:
 162                 props->active_mtu = props->max_mtu = IB_MTU_2048;
 163                 break;
 164         case 0x5:
 165                 props->active_mtu = props->max_mtu = IB_MTU_4096;
 166                 break;
 167         default:
 168                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
 169                          rblock->max_mtu);
 170                 break;
 171         }
 172
 173         props->port_cap_flags  = rblock->capability_mask;
 174         props->gid_tbl_len     = rblock->gid_tbl_len;
 175         props->max_msg_sz      = rblock->max_msg_sz;
 176         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
 177         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
 178         props->pkey_tbl_len    = rblock->pkey_tbl_len;
 179         props->lid             = rblock->lid;
 180         props->sm_lid          = rblock->sm_lid;
 181         props->lmc             = rblock->lmc;
 182         props->sm_sl           = rblock->sm_sl;
 183         props->subnet_timeout  = rblock->subnet_timeout;
 184         props->init_type_reply = rblock->init_type_reply;
 185
 186         props->active_width    = IB_WIDTH_12X;
 187         props->active_speed    = 0x1;
 188
 189         /* at the moment (logical) link state is always LINK_UP */
 190         props->phys_state      = 0x5;
 191
 192 query_port1:
 193         ehca_free_fw_ctrlblock(rblock);
 194
 195         return ret;
 196 }
 197
 198 int ehca_query_sma_attr(struct ehca_shca *shca,
 199                         u8 port, struct ehca_sma_attr *attr)
 200 {
 201         int ret = 0;
 202         u64 h_ret;
 203         struct hipz_query_port *rblock;
 204
 205         rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
 206         if (!rblock) {
 207                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 208                 return -ENOMEM;
 209         }
 210
 211         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 212         if (h_ret != H_SUCCESS) {
 213                 ehca_err(&shca->ib_device, "Can't query port properties");
 214                 ret = -EINVAL;
 215                 goto query_sma_attr1;
 216         }
 217
 218         memset(attr, 0, sizeof(struct ehca_sma_attr));
 219
 220         attr->lid    = rblock->lid;
 221         attr->lmc    = rblock->lmc;
 222         attr->sm_sl  = rblock->sm_sl;
 223         attr->sm_lid = rblock->sm_lid;
 224
 225         attr->pkey_tbl_len = rblock->pkey_tbl_len;
 226         memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
 227
 228 query_sma_attr1:
 229         ehca_free_fw_ctrlblock(rblock);
 230
 231         return ret;
 232 }
 233
 234 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 235 {
 236         int ret = 0;
 237         u64 h_ret;
 238         struct ehca_shca *shca;
 239         struct hipz_query_port *rblock;
 240
 241         shca = container_of(ibdev, struct ehca_shca, ib_device);
 242         if (index > 16) {
 243                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 244                 return -EINVAL;
 245         }
 246
 247         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 248         if (!rblock) {
 249                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 250                 return -ENOMEM;
 251         }
 252
 253         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 254         if (h_ret != H_SUCCESS) {
 255                 ehca_err(&shca->ib_device, "Can't query port properties");
 256                 ret = -EINVAL;
 257                 goto query_pkey1;
 258         }
 259
 260         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 261
 262 query_pkey1:
 263         ehca_free_fw_ctrlblock(rblock);
 264
 265         return ret;
 266 }
 267
 268 int ehca_query_gid(struct ib_device *ibdev, u8 port,
 269                    int index, union ib_gid *gid)
 270 {
 271         int ret = 0;
 272         u64 h_ret;
 273         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 274                                               ib_device);
 275         struct hipz_query_port *rblock;
 276
 277         if (index > 255) {
 278                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 279                 return -EINVAL;
 280         }
 281
 282         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 283         if (!rblock) {
 284                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 285                 return -ENOMEM;
 286         }
 287
 288         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 289         if (h_ret != H_SUCCESS) {
 290                 ehca_err(&shca->ib_device, "Can't query port properties");
 291                 ret = -EINVAL;
 292                 goto query_gid1;
 293         }
 294
 295         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
 296         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 297
 298 query_gid1:
 299         ehca_free_fw_ctrlblock(rblock);
 300
 301         return ret;
 302 }
 303
 304 const u32 allowed_port_caps = (
 305         IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
 306         IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
 307         IB_PORT_VENDOR_CLASS_SUP);
 308
 309 int ehca_modify_port(struct ib_device *ibdev,
 310                      u8 port, int port_modify_mask,
 311                      struct ib_port_modify *props)
 312 {
 313         int ret = 0;
 314         struct ehca_shca *shca;
 315         struct hipz_query_port *rblock;
 316         u32 cap;
 317         u64 hret;
 318
 319         shca = container_of(ibdev, struct ehca_shca, ib_device);
 320         if ((props->set_port_cap_mask | props->clr_port_cap_mask)
 321             & ~allowed_port_caps) {
 322                 ehca_err(&shca->ib_device, "Non-changeable bits set in masks  "
 323                          "set=%x  clr=%x  allowed=%x", props->set_port_cap_mask,
 324                          props->clr_port_cap_mask, allowed_port_caps);
 325                 return -EINVAL;
 326         }
 327
 328         if (mutex_lock_interruptible(&shca->modify_mutex))
 329                 return -ERESTARTSYS;
 330
 331         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 332         if (!rblock) {
 333                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 334                 ret = -ENOMEM;
 335                 goto modify_port1;
 336         }
 337
 338         hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 339         if (hret != H_SUCCESS) {
 340                 ehca_err(&shca->ib_device, "Can't query port properties");
 341                 ret = -EINVAL;
 342                 goto modify_port2;
 343         }
 344
 345         cap = (rblock->capability_mask | props->set_port_cap_mask)
 346                 & ~props->clr_port_cap_mask;
 347
 348         hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
 349                                   cap, props->init_type, port_modify_mask);
 350         if (hret != H_SUCCESS) {
 351                 ehca_err(&shca->ib_device, "Modify port failed  hret=%lx",
 352                          hret);
 353                 ret = -EINVAL;
 354         }
 355
 356 modify_port2:
 357         ehca_free_fw_ctrlblock(rblock);
 358
 359 modify_port1:
 360         mutex_unlock(&shca->modify_mutex);
 361
 362         return ret;
 363 }