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(unsigned, rblock->max_qp, INT_MAX);
  86         props->max_qp_wr       = min_t(unsigned, rblock->max_wqes_wq, INT_MAX);
  87         props->max_sge         = min_t(unsigned, rblock->max_sge, INT_MAX);
  88         props->max_sge_rd      = min_t(unsigned, rblock->max_sge_rd, INT_MAX);
  89         props->max_cq          = min_t(unsigned, rblock->max_cq, INT_MAX);
  90         props->max_cqe         = min_t(unsigned, rblock->max_cqe, INT_MAX);
  91         props->max_mr          = min_t(unsigned, rblock->max_mr, INT_MAX);
  92         props->max_mw          = min_t(unsigned, rblock->max_mw, INT_MAX);
  93         props->max_pd          = min_t(unsigned, rblock->max_pd, INT_MAX);
  94         props->max_ah          = min_t(unsigned, rblock->max_ah, INT_MAX);
  95         props->max_fmr         = min_t(unsigned, rblock->max_mr, INT_MAX);
  96
  97         if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
  98                 props->max_srq         = props->max_qp;
  99                 props->max_srq_wr      = props->max_qp_wr;
 100                 props->max_srq_sge     = 3;
 101         }
 102
 103         props->max_pkeys       = 16;
 104         props->local_ca_ack_delay
 105                 = rblock->local_ca_ack_delay;
 106         props->max_raw_ipv6_qp
 107                 = min_t(unsigned, rblock->max_raw_ipv6_qp, INT_MAX);
 108         props->max_raw_ethy_qp
 109                 = min_t(unsigned, rblock->max_raw_ethy_qp, INT_MAX);
 110         props->max_mcast_grp
 111                 = min_t(unsigned, rblock->max_mcast_grp, INT_MAX);
 112         props->max_mcast_qp_attach
 113                 = min_t(unsigned, rblock->max_mcast_qp_attach, INT_MAX);
 114         props->max_total_mcast_qp_attach
 115                 = min_t(unsigned, rblock->max_total_mcast_qp_attach, INT_MAX);
 116
 117         /* translate device capabilities */
 118         props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
 119                 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
 120         for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
 121                 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
 122                         props->device_cap_flags |= cap_mapping[i];
 123
 124 query_device1:
 125         ehca_free_fw_ctrlblock(rblock);
 126
 127         return ret;
 128 }
 129
 130 int ehca_query_port(struct ib_device *ibdev,
 131                     u8 port, struct ib_port_attr *props)
 132 {
 133         int ret = 0;
 134         u64 h_ret;
 135         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 136                                               ib_device);
 137         struct hipz_query_port *rblock;
 138
 139         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 140         if (!rblock) {
 141                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 142                 return -ENOMEM;
 143         }
 144
 145         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 146         if (h_ret != H_SUCCESS) {
 147                 ehca_err(&shca->ib_device, "Can't query port properties");
 148                 ret = -EINVAL;
 149                 goto query_port1;
 150         }
 151
 152         memset(props, 0, sizeof(struct ib_port_attr));
 153         props->state = rblock->state;
 154
 155         switch (rblock->max_mtu) {
 156         case 0x1:
 157                 props->active_mtu = props->max_mtu = IB_MTU_256;
 158                 break;
 159         case 0x2:
 160                 props->active_mtu = props->max_mtu = IB_MTU_512;
 161                 break;
 162         case 0x3:
 163                 props->active_mtu = props->max_mtu = IB_MTU_1024;
 164                 break;
 165         case 0x4:
 166                 props->active_mtu = props->max_mtu = IB_MTU_2048;
 167                 break;
 168         case 0x5:
 169                 props->active_mtu = props->max_mtu = IB_MTU_4096;
 170                 break;
 171         default:
 172                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
 173                          rblock->max_mtu);
 174                 break;
 175         }
 176
 177         props->port_cap_flags  = rblock->capability_mask;
 178         props->gid_tbl_len     = rblock->gid_tbl_len;
 179         props->max_msg_sz      = rblock->max_msg_sz;
 180         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
 181         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
 182         props->pkey_tbl_len    = rblock->pkey_tbl_len;
 183         props->lid             = rblock->lid;
 184         props->sm_lid          = rblock->sm_lid;
 185         props->lmc             = rblock->lmc;
 186         props->sm_sl           = rblock->sm_sl;
 187         props->subnet_timeout  = rblock->subnet_timeout;
 188         props->init_type_reply = rblock->init_type_reply;
 189
 190         props->active_width    = IB_WIDTH_12X;
 191         props->active_speed    = 0x1;
 192
 193         /* at the moment (logical) link state is always LINK_UP */
 194         props->phys_state      = 0x5;
 195
 196 query_port1:
 197         ehca_free_fw_ctrlblock(rblock);
 198
 199         return ret;
 200 }
 201
 202 int ehca_query_sma_attr(struct ehca_shca *shca,
 203                         u8 port, struct ehca_sma_attr *attr)
 204 {
 205         int ret = 0;
 206         u64 h_ret;
 207         struct hipz_query_port *rblock;
 208
 209         rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
 210         if (!rblock) {
 211                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 212                 return -ENOMEM;
 213         }
 214
 215         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 216         if (h_ret != H_SUCCESS) {
 217                 ehca_err(&shca->ib_device, "Can't query port properties");
 218                 ret = -EINVAL;
 219                 goto query_sma_attr1;
 220         }
 221
 222         memset(attr, 0, sizeof(struct ehca_sma_attr));
 223
 224         attr->lid    = rblock->lid;
 225         attr->lmc    = rblock->lmc;
 226         attr->sm_sl  = rblock->sm_sl;
 227         attr->sm_lid = rblock->sm_lid;
 228
 229         attr->pkey_tbl_len = rblock->pkey_tbl_len;
 230         memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
 231
 232 query_sma_attr1:
 233         ehca_free_fw_ctrlblock(rblock);
 234
 235         return ret;
 236 }
 237
 238 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 239 {
 240         int ret = 0;
 241         u64 h_ret;
 242         struct ehca_shca *shca;
 243         struct hipz_query_port *rblock;
 244
 245         shca = container_of(ibdev, struct ehca_shca, ib_device);
 246         if (index > 16) {
 247                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 248                 return -EINVAL;
 249         }
 250
 251         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 252         if (!rblock) {
 253                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 254                 return -ENOMEM;
 255         }
 256
 257         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 258         if (h_ret != H_SUCCESS) {
 259                 ehca_err(&shca->ib_device, "Can't query port properties");
 260                 ret = -EINVAL;
 261                 goto query_pkey1;
 262         }
 263
 264         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 265
 266 query_pkey1:
 267         ehca_free_fw_ctrlblock(rblock);
 268
 269         return ret;
 270 }
 271
 272 int ehca_query_gid(struct ib_device *ibdev, u8 port,
 273                    int index, union ib_gid *gid)
 274 {
 275         int ret = 0;
 276         u64 h_ret;
 277         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 278                                               ib_device);
 279         struct hipz_query_port *rblock;
 280
 281         if (index > 255) {
 282                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 283                 return -EINVAL;
 284         }
 285
 286         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 287         if (!rblock) {
 288                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 289                 return -ENOMEM;
 290         }
 291
 292         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 293         if (h_ret != H_SUCCESS) {
 294                 ehca_err(&shca->ib_device, "Can't query port properties");
 295                 ret = -EINVAL;
 296                 goto query_gid1;
 297         }
 298
 299         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
 300         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 301
 302 query_gid1:
 303         ehca_free_fw_ctrlblock(rblock);
 304
 305         return ret;
 306 }
 307
 308 const u32 allowed_port_caps = (
 309         IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
 310         IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
 311         IB_PORT_VENDOR_CLASS_SUP);
 312
 313 int ehca_modify_port(struct ib_device *ibdev,
 314                      u8 port, int port_modify_mask,
 315                      struct ib_port_modify *props)
 316 {
 317         int ret = 0;
 318         struct ehca_shca *shca;
 319         struct hipz_query_port *rblock;
 320         u32 cap;
 321         u64 hret;
 322
 323         shca = container_of(ibdev, struct ehca_shca, ib_device);
 324         if ((props->set_port_cap_mask | props->clr_port_cap_mask)
 325             & ~allowed_port_caps) {
 326                 ehca_err(&shca->ib_device, "Non-changeable bits set in masks  "
 327                          "set=%x  clr=%x  allowed=%x", props->set_port_cap_mask,
 328                          props->clr_port_cap_mask, allowed_port_caps);
 329                 return -EINVAL;
 330         }
 331
 332         if (mutex_lock_interruptible(&shca->modify_mutex))
 333                 return -ERESTARTSYS;
 334
 335         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 336         if (!rblock) {
 337                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 338                 ret = -ENOMEM;
 339                 goto modify_port1;
 340         }
 341
 342         hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 343         if (hret != H_SUCCESS) {
 344                 ehca_err(&shca->ib_device, "Can't query port properties");
 345                 ret = -EINVAL;
 346                 goto modify_port2;
 347         }
 348
 349         cap = (rblock->capability_mask | props->set_port_cap_mask)
 350                 & ~props->clr_port_cap_mask;
 351
 352         hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
 353                                   cap, props->init_type, port_modify_mask);
 354         if (hret != H_SUCCESS) {
 355                 ehca_err(&shca->ib_device, "Modify port failed  h_ret=%li",
 356                          hret);
 357                 ret = -EINVAL;
 358         }
 359
 360 modify_port2:
 361         ehca_free_fw_ctrlblock(rblock);
 362
 363 modify_port1:
 364         mutex_unlock(&shca->modify_mutex);
 365
 366         return ret;
 367 }