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   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 static unsigned int limit_uint(unsigned int value)
  47 {
  48         return min_t(unsigned int, value, INT_MAX);
  49 }
  50
  51 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
  52 {
  53         int i, ret = 0;
  54         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
  55                                               ib_device);
  56         struct hipz_query_hca *rblock;
  57
  58         static const u32 cap_mapping[] = {
  59                 IB_DEVICE_RESIZE_MAX_WR,      HCA_CAP_WQE_RESIZE,
  60                 IB_DEVICE_BAD_PKEY_CNTR,      HCA_CAP_BAD_P_KEY_CTR,
  61                 IB_DEVICE_BAD_QKEY_CNTR,      HCA_CAP_Q_KEY_VIOL_CTR,
  62                 IB_DEVICE_RAW_MULTI,          HCA_CAP_RAW_PACKET_MCAST,
  63                 IB_DEVICE_AUTO_PATH_MIG,      HCA_CAP_AUTO_PATH_MIG,
  64                 IB_DEVICE_CHANGE_PHY_PORT,    HCA_CAP_SQD_RTS_PORT_CHANGE,
  65                 IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK,
  66                 IB_DEVICE_CURR_QP_STATE_MOD,  HCA_CAP_CUR_QP_STATE_MOD,
  67                 IB_DEVICE_SHUTDOWN_PORT,      HCA_CAP_SHUTDOWN_PORT,
  68                 IB_DEVICE_INIT_TYPE,          HCA_CAP_INIT_TYPE,
  69                 IB_DEVICE_PORT_ACTIVE_EVENT,  HCA_CAP_PORT_ACTIVE_EVENT,
  70         };
  71
  72         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
  73         if (!rblock) {
  74                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
  75                 return -ENOMEM;
  76         }
  77
  78         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
  79                 ehca_err(&shca->ib_device, "Can't query device properties");
  80                 ret = -EINVAL;
  81                 goto query_device1;
  82         }
  83
  84         memset(props, 0, sizeof(struct ib_device_attr));
  85         props->page_size_cap   = shca->hca_cap_mr_pgsize;
  86         props->fw_ver          = rblock->hw_ver;
  87         props->max_mr_size     = rblock->max_mr_size;
  88         props->vendor_id       = rblock->vendor_id >> 8;
  89         props->vendor_part_id  = rblock->vendor_part_id >> 16;
  90         props->hw_ver          = rblock->hw_ver;
  91         props->max_qp          = limit_uint(rblock->max_qp);
  92         props->max_qp_wr       = limit_uint(rblock->max_wqes_wq);
  93         props->max_sge         = limit_uint(rblock->max_sge);
  94         props->max_sge_rd      = limit_uint(rblock->max_sge_rd);
  95         props->max_cq          = limit_uint(rblock->max_cq);
  96         props->max_cqe         = limit_uint(rblock->max_cqe);
  97         props->max_mr          = limit_uint(rblock->max_mr);
  98         props->max_mw          = limit_uint(rblock->max_mw);
  99         props->max_pd          = limit_uint(rblock->max_pd);
 100         props->max_ah          = limit_uint(rblock->max_ah);
 101         props->max_ee          = limit_uint(rblock->max_rd_ee_context);
 102         props->max_rdd         = limit_uint(rblock->max_rd_domain);
 103         props->max_fmr         = limit_uint(rblock->max_mr);
 104         props->local_ca_ack_delay  = limit_uint(rblock->local_ca_ack_delay);
 105         props->max_qp_rd_atom  = limit_uint(rblock->max_rr_qp);
 106         props->max_ee_rd_atom  = limit_uint(rblock->max_rr_ee_context);
 107         props->max_res_rd_atom = limit_uint(rblock->max_rr_hca);
 108         props->max_qp_init_rd_atom = limit_uint(rblock->max_act_wqs_qp);
 109         props->max_ee_init_rd_atom = limit_uint(rblock->max_act_wqs_ee_context);
 110
 111         if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
 112                 props->max_srq         = limit_uint(props->max_qp);
 113                 props->max_srq_wr      = limit_uint(props->max_qp_wr);
 114                 props->max_srq_sge     = 3;
 115         }
 116
 117         props->max_pkeys           = 16;
 118         props->local_ca_ack_delay  = limit_uint(rblock->local_ca_ack_delay);
 119         props->max_raw_ipv6_qp     = limit_uint(rblock->max_raw_ipv6_qp);
 120         props->max_raw_ethy_qp     = limit_uint(rblock->max_raw_ethy_qp);
 121         props->max_mcast_grp       = limit_uint(rblock->max_mcast_grp);
 122         props->max_mcast_qp_attach = limit_uint(rblock->max_mcast_qp_attach);
 123         props->max_total_mcast_qp_attach
 124                 = limit_uint(rblock->max_total_mcast_qp_attach);
 125
 126         /* translate device capabilities */
 127         props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
 128                 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
 129         for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
 130                 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
 131                         props->device_cap_flags |= cap_mapping[i];
 132
 133 query_device1:
 134         ehca_free_fw_ctrlblock(rblock);
 135
 136         return ret;
 137 }
 138
 139 static int map_mtu(struct ehca_shca *shca, u32 fw_mtu)
 140 {
 141         switch (fw_mtu) {
 142         case 0x1:
 143                 return IB_MTU_256;
 144         case 0x2:
 145                 return IB_MTU_512;
 146         case 0x3:
 147                 return IB_MTU_1024;
 148         case 0x4:
 149                 return IB_MTU_2048;
 150         case 0x5:
 151                 return IB_MTU_4096;
 152         default:
 153                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
 154                          fw_mtu);
 155                 return 0;
 156         }
 157 }
 158
 159 static int map_number_of_vls(struct ehca_shca *shca, u32 vl_cap)
 160 {
 161         switch (vl_cap) {
 162         case 0x1:
 163                 return 1;
 164         case 0x2:
 165                 return 2;
 166         case 0x3:
 167                 return 4;
 168         case 0x4:
 169                 return 8;
 170         case 0x5:
 171                 return 15;
 172         default:
 173                 ehca_err(&shca->ib_device, "invalid Vl Capability: %x.",
 174                          vl_cap);
 175                 return 0;
 176         }
 177 }
 178
 179 int ehca_query_port(struct ib_device *ibdev,
 180                     u8 port, struct ib_port_attr *props)
 181 {
 182         int ret = 0;
 183         u64 h_ret;
 184         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 185                                               ib_device);
 186         struct hipz_query_port *rblock;
 187
 188         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 189         if (!rblock) {
 190                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 191                 return -ENOMEM;
 192         }
 193
 194         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 195         if (h_ret != H_SUCCESS) {
 196                 ehca_err(&shca->ib_device, "Can't query port properties");
 197                 ret = -EINVAL;
 198                 goto query_port1;
 199         }
 200
 201         memset(props, 0, sizeof(struct ib_port_attr));
 202
 203         props->active_mtu = props->max_mtu = map_mtu(shca, rblock->max_mtu);
 204         props->port_cap_flags  = rblock->capability_mask;
 205         props->gid_tbl_len     = rblock->gid_tbl_len;
 206         if (rblock->max_msg_sz)
 207                 props->max_msg_sz      = rblock->max_msg_sz;
 208         else
 209                 props->max_msg_sz      = 0x1 << 31;
 210         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
 211         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
 212         props->pkey_tbl_len    = rblock->pkey_tbl_len;
 213         props->lid             = rblock->lid;
 214         props->sm_lid          = rblock->sm_lid;
 215         props->lmc             = rblock->lmc;
 216         props->sm_sl           = rblock->sm_sl;
 217         props->subnet_timeout  = rblock->subnet_timeout;
 218         props->init_type_reply = rblock->init_type_reply;
 219         props->max_vl_num      = map_number_of_vls(shca, rblock->vl_cap);
 220
 221         if (rblock->state && rblock->phys_width) {
 222                 props->phys_state      = rblock->phys_pstate;
 223                 props->state           = rblock->phys_state;
 224                 props->active_width    = rblock->phys_width;
 225                 props->active_speed    = rblock->phys_speed;
 226         } else {
 227                 /* old firmware releases don't report physical
 228                  * port info, so use default values
 229                  */
 230                 props->phys_state      = 5;
 231                 props->state           = rblock->state;
 232                 props->active_width    = IB_WIDTH_12X;
 233                 props->active_speed    = 0x1;
 234         }
 235
 236 query_port1:
 237         ehca_free_fw_ctrlblock(rblock);
 238
 239         return ret;
 240 }
 241
 242 int ehca_query_sma_attr(struct ehca_shca *shca,
 243                         u8 port, struct ehca_sma_attr *attr)
 244 {
 245         int ret = 0;
 246         u64 h_ret;
 247         struct hipz_query_port *rblock;
 248
 249         rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
 250         if (!rblock) {
 251                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 252                 return -ENOMEM;
 253         }
 254
 255         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 256         if (h_ret != H_SUCCESS) {
 257                 ehca_err(&shca->ib_device, "Can't query port properties");
 258                 ret = -EINVAL;
 259                 goto query_sma_attr1;
 260         }
 261
 262         memset(attr, 0, sizeof(struct ehca_sma_attr));
 263
 264         attr->lid    = rblock->lid;
 265         attr->lmc    = rblock->lmc;
 266         attr->sm_sl  = rblock->sm_sl;
 267         attr->sm_lid = rblock->sm_lid;
 268
 269         attr->pkey_tbl_len = rblock->pkey_tbl_len;
 270         memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
 271
 272 query_sma_attr1:
 273         ehca_free_fw_ctrlblock(rblock);
 274
 275         return ret;
 276 }
 277
 278 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 279 {
 280         int ret = 0;
 281         u64 h_ret;
 282         struct ehca_shca *shca;
 283         struct hipz_query_port *rblock;
 284
 285         shca = container_of(ibdev, struct ehca_shca, ib_device);
 286         if (index > 16) {
 287                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 288                 return -EINVAL;
 289         }
 290
 291         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 292         if (!rblock) {
 293                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 294                 return -ENOMEM;
 295         }
 296
 297         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 298         if (h_ret != H_SUCCESS) {
 299                 ehca_err(&shca->ib_device, "Can't query port properties");
 300                 ret = -EINVAL;
 301                 goto query_pkey1;
 302         }
 303
 304         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 305
 306 query_pkey1:
 307         ehca_free_fw_ctrlblock(rblock);
 308
 309         return ret;
 310 }
 311
 312 int ehca_query_gid(struct ib_device *ibdev, u8 port,
 313                    int index, union ib_gid *gid)
 314 {
 315         int ret = 0;
 316         u64 h_ret;
 317         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
 318                                               ib_device);
 319         struct hipz_query_port *rblock;
 320
 321         if (index > 255) {
 322                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 323                 return -EINVAL;
 324         }
 325
 326         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 327         if (!rblock) {
 328                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
 329                 return -ENOMEM;
 330         }
 331
 332         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 333         if (h_ret != H_SUCCESS) {
 334                 ehca_err(&shca->ib_device, "Can't query port properties");
 335                 ret = -EINVAL;
 336                 goto query_gid1;
 337         }
 338
 339         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
 340         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 341
 342 query_gid1:
 343         ehca_free_fw_ctrlblock(rblock);
 344
 345         return ret;
 346 }
 347
 348 static const u32 allowed_port_caps = (
 349         IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
 350         IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
 351         IB_PORT_VENDOR_CLASS_SUP);
 352
 353 int ehca_modify_port(struct ib_device *ibdev,
 354                      u8 port, int port_modify_mask,
 355                      struct ib_port_modify *props)
 356 {
 357         int ret = 0;
 358         struct ehca_shca *shca;
 359         struct hipz_query_port *rblock;
 360         u32 cap;
 361         u64 hret;
 362
 363         shca = container_of(ibdev, struct ehca_shca, ib_device);
 364         if ((props->set_port_cap_mask | props->clr_port_cap_mask)
 365             & ~allowed_port_caps) {
 366                 ehca_err(&shca->ib_device, "Non-changeable bits set in masks  "
 367                          "set=%x  clr=%x  allowed=%x", props->set_port_cap_mask,
 368                          props->clr_port_cap_mask, allowed_port_caps);
 369                 return -EINVAL;
 370         }
 371
 372         if (mutex_lock_interruptible(&shca->modify_mutex))
 373                 return -ERESTARTSYS;
 374
 375         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
 376         if (!rblock) {
 377                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
 378                 ret = -ENOMEM;
 379                 goto modify_port1;
 380         }
 381
 382         hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
 383         if (hret != H_SUCCESS) {
 384                 ehca_err(&shca->ib_device, "Can't query port properties");
 385                 ret = -EINVAL;
 386                 goto modify_port2;
 387         }
 388
 389         cap = (rblock->capability_mask | props->set_port_cap_mask)
 390                 & ~props->clr_port_cap_mask;
 391
 392         hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
 393                                   cap, props->init_type, port_modify_mask);
 394         if (hret != H_SUCCESS) {
 395                 ehca_err(&shca->ib_device, "Modify port failed  h_ret=%li",
 396                          hret);
 397                 ret = -EINVAL;
 398         }
 399
 400 modify_port2:
 401         ehca_free_fw_ctrlblock(rblock);
 402
 403 modify_port1:
 404         mutex_unlock(&shca->modify_mutex);
 405
 406         return ret;
 407 }