drivers/infiniband/hw/mthca/mthca_profile.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/string.h>
  35 #include <linux/slab.h>
  36
  37 #include "mthca_profile.h"
  38
  39 enum {
  40         MTHCA_RES_QP,
  41         MTHCA_RES_EEC,
  42         MTHCA_RES_SRQ,
  43         MTHCA_RES_CQ,
  44         MTHCA_RES_EQP,
  45         MTHCA_RES_EEEC,
  46         MTHCA_RES_EQ,
  47         MTHCA_RES_RDB,
  48         MTHCA_RES_MCG,
  49         MTHCA_RES_MPT,
  50         MTHCA_RES_MTT,
  51         MTHCA_RES_UAR,
  52         MTHCA_RES_UDAV,
  53         MTHCA_RES_UARC,
  54         MTHCA_RES_NUM
  55 };
  56
  57 enum {
  58         MTHCA_NUM_EQS = 32,
  59         MTHCA_NUM_PDS = 1 << 15
  60 };
  61
  62 s64 mthca_make_profile(struct mthca_dev *dev,
  63                        struct mthca_profile *request,
  64                        struct mthca_dev_lim *dev_lim,
  65                        struct mthca_init_hca_param *init_hca)
  66 {
  67         struct mthca_resource {
  68                 u64 size;
  69                 u64 start;
  70                 int type;
  71                 int num;
  72                 int log_num;
  73         };
  74
  75         u64 mem_base, mem_avail;
  76         s64 total_size = 0;
  77         struct mthca_resource *profile;
  78         int i, j;
  79
  80         profile = kcalloc(MTHCA_RES_NUM, sizeof(*profile), GFP_KERNEL);
  81         if (!profile)
  82                 return -ENOMEM;
  83
  84         profile[MTHCA_RES_QP].size   = dev_lim->qpc_entry_sz;
  85         profile[MTHCA_RES_EEC].size  = dev_lim->eec_entry_sz;
  86         profile[MTHCA_RES_SRQ].size  = dev_lim->srq_entry_sz;
  87         profile[MTHCA_RES_CQ].size   = dev_lim->cqc_entry_sz;
  88         profile[MTHCA_RES_EQP].size  = dev_lim->eqpc_entry_sz;
  89         profile[MTHCA_RES_EEEC].size = dev_lim->eeec_entry_sz;
  90         profile[MTHCA_RES_EQ].size   = dev_lim->eqc_entry_sz;
  91         profile[MTHCA_RES_RDB].size  = MTHCA_RDB_ENTRY_SIZE;
  92         profile[MTHCA_RES_MCG].size  = MTHCA_MGM_ENTRY_SIZE;
  93         profile[MTHCA_RES_MPT].size  = dev_lim->mpt_entry_sz;
  94         profile[MTHCA_RES_MTT].size  = dev->limits.mtt_seg_size;
  95         profile[MTHCA_RES_UAR].size  = dev_lim->uar_scratch_entry_sz;
  96         profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
  97         profile[MTHCA_RES_UARC].size = request->uarc_size;
  98
  99         profile[MTHCA_RES_QP].num    = request->num_qp;
 100         profile[MTHCA_RES_SRQ].num   = request->num_srq;
 101         profile[MTHCA_RES_EQP].num   = request->num_qp;
 102         profile[MTHCA_RES_RDB].num   = request->num_qp * request->rdb_per_qp;
 103         profile[MTHCA_RES_CQ].num    = request->num_cq;
 104         profile[MTHCA_RES_EQ].num    = MTHCA_NUM_EQS;
 105         profile[MTHCA_RES_MCG].num   = request->num_mcg;
 106         profile[MTHCA_RES_MPT].num   = request->num_mpt;
 107         profile[MTHCA_RES_MTT].num   = request->num_mtt;
 108         profile[MTHCA_RES_UAR].num   = request->num_uar;
 109         profile[MTHCA_RES_UARC].num  = request->num_uar;
 110         profile[MTHCA_RES_UDAV].num  = request->num_udav;
 111
 112         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 113                 profile[i].type     = i;
 114                 profile[i].log_num  = max(ffs(profile[i].num) - 1, 0);
 115                 profile[i].size    *= profile[i].num;
 116                 if (mthca_is_memfree(dev))
 117                         profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
 118         }
 119
 120         if (mthca_is_memfree(dev)) {
 121                 mem_base  = 0;
 122                 mem_avail = dev_lim->hca.arbel.max_icm_sz;
 123         } else {
 124                 mem_base  = dev->ddr_start;
 125                 mem_avail = dev->fw.tavor.fw_start - dev->ddr_start;
 126         }
 127
 128         /*
 129          * Sort the resources in decreasing order of size.  Since they
 130          * all have sizes that are powers of 2, we'll be able to keep
 131          * resources aligned to their size and pack them without gaps
 132          * using the sorted order.
 133          */
 134         for (i = MTHCA_RES_NUM; i > 0; --i)
 135                 for (j = 1; j < i; ++j) {
 136                         if (profile[j].size > profile[j - 1].size)
 137                                 swap(profile[j], profile[j - 1]);
 138                 }
 139
 140         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 141                 if (profile[i].size) {
 142                         profile[i].start = mem_base + total_size;
 143                         total_size      += profile[i].size;
 144                 }
 145                 if (total_size > mem_avail) {
 146                         mthca_err(dev, "Profile requires 0x%llx bytes; "
 147                                   "won't fit in 0x%llx bytes of context memory.\n",
 148                                   (unsigned long long) total_size,
 149                                   (unsigned long long) mem_avail);
 150                         kfree(profile);
 151                         return -ENOMEM;
 152                 }
 153
 154                 if (profile[i].size)
 155                         mthca_dbg(dev, "profile[%2d]--%2d/%2d @ 0x%16llx "
 156                                   "(size 0x%8llx)\n",
 157                                   i, profile[i].type, profile[i].log_num,
 158                                   (unsigned long long) profile[i].start,
 159                                   (unsigned long long) profile[i].size);
 160         }
 161
 162         if (mthca_is_memfree(dev))
 163                 mthca_dbg(dev, "HCA context memory: reserving %d KB\n",
 164                           (int) (total_size >> 10));
 165         else
 166                 mthca_dbg(dev, "HCA memory: allocated %d KB/%d KB (%d KB free)\n",
 167                           (int) (total_size >> 10), (int) (mem_avail >> 10),
 168                           (int) ((mem_avail - total_size) >> 10));
 169
 170         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 171                 switch (profile[i].type) {
 172                 case MTHCA_RES_QP:
 173                         dev->limits.num_qps   = profile[i].num;
 174                         init_hca->qpc_base    = profile[i].start;
 175                         init_hca->log_num_qps = profile[i].log_num;
 176                         break;
 177                 case MTHCA_RES_EEC:
 178                         dev->limits.num_eecs   = profile[i].num;
 179                         init_hca->eec_base     = profile[i].start;
 180                         init_hca->log_num_eecs = profile[i].log_num;
 181                         break;
 182                 case MTHCA_RES_SRQ:
 183                         dev->limits.num_srqs   = profile[i].num;
 184                         init_hca->srqc_base    = profile[i].start;
 185                         init_hca->log_num_srqs = profile[i].log_num;
 186                         break;
 187                 case MTHCA_RES_CQ:
 188                         dev->limits.num_cqs   = profile[i].num;
 189                         init_hca->cqc_base    = profile[i].start;
 190                         init_hca->log_num_cqs = profile[i].log_num;
 191                         break;
 192                 case MTHCA_RES_EQP:
 193                         init_hca->eqpc_base = profile[i].start;
 194                         break;
 195                 case MTHCA_RES_EEEC:
 196                         init_hca->eeec_base = profile[i].start;
 197                         break;
 198                 case MTHCA_RES_EQ:
 199                         dev->limits.num_eqs   = profile[i].num;
 200                         init_hca->eqc_base    = profile[i].start;
 201                         init_hca->log_num_eqs = profile[i].log_num;
 202                         break;
 203                 case MTHCA_RES_RDB:
 204                         for (dev->qp_table.rdb_shift = 0;
 205                              request->num_qp << dev->qp_table.rdb_shift < profile[i].num;
 206                              ++dev->qp_table.rdb_shift)
 207                                 ; /* nothing */
 208                         dev->qp_table.rdb_base    = (u32) profile[i].start;
 209                         init_hca->rdb_base        = profile[i].start;
 210                         break;
 211                 case MTHCA_RES_MCG:
 212                         dev->limits.num_mgms      = profile[i].num >> 1;
 213                         dev->limits.num_amgms     = profile[i].num >> 1;
 214                         init_hca->mc_base         = profile[i].start;
 215                         init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
 216                         init_hca->log_mc_table_sz = profile[i].log_num;
 217                         init_hca->mc_hash_sz      = 1 << (profile[i].log_num - 1);
 218                         break;
 219                 case MTHCA_RES_MPT:
 220                         dev->limits.num_mpts   = profile[i].num;
 221                         dev->mr_table.mpt_base = profile[i].start;
 222                         init_hca->mpt_base     = profile[i].start;
 223                         init_hca->log_mpt_sz   = profile[i].log_num;
 224                         break;
 225                 case MTHCA_RES_MTT:
 226                         dev->limits.num_mtt_segs = profile[i].num;
 227                         dev->mr_table.mtt_base   = profile[i].start;
 228                         init_hca->mtt_base       = profile[i].start;
 229                         init_hca->mtt_seg_sz     = ffs(dev->limits.mtt_seg_size) - 7;
 230                         break;
 231                 case MTHCA_RES_UAR:
 232                         dev->limits.num_uars       = profile[i].num;
 233                         init_hca->uar_scratch_base = profile[i].start;
 234                         break;
 235                 case MTHCA_RES_UDAV:
 236                         dev->av_table.ddr_av_base = profile[i].start;
 237                         dev->av_table.num_ddr_avs = profile[i].num;
 238                         break;
 239                 case MTHCA_RES_UARC:
 240                         dev->uar_table.uarc_size = request->uarc_size;
 241                         dev->uar_table.uarc_base = profile[i].start;
 242                         init_hca->uarc_base      = profile[i].start;
 243                         init_hca->log_uarc_sz    = ffs(request->uarc_size) - 13;
 244                         init_hca->log_uar_sz     = ffs(request->num_uar) - 1;
 245                         break;
 246                 default:
 247                         break;
 248                 }
 249         }
 250
 251         /*
 252          * PDs don't take any HCA memory, but we assign them as part
 253          * of the HCA profile anyway.
 254          */
 255         dev->limits.num_pds = MTHCA_NUM_PDS;
 256
 257         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT &&
 258             init_hca->log_mpt_sz > 23) {
 259                 mthca_warn(dev, "MPT table too large (requested size 2^%d >= 2^24)\n",
 260                            init_hca->log_mpt_sz);
 261                 mthca_warn(dev, "Disabling memory key throughput optimization.\n");
 262                 dev->mthca_flags &= ~MTHCA_FLAG_SINAI_OPT;
 263         }
 264
 265         /*
 266          * For Tavor, FMRs use ioremapped PCI memory. For 32 bit
 267          * systems it may use too much vmalloc space to map all MTT
 268          * memory, so we reserve some MTTs for FMR access, taking them
 269          * out of the MR pool. They don't use additional memory, but
 270          * we assign them as part of the HCA profile anyway.
 271          */
 272         if (mthca_is_memfree(dev) || BITS_PER_LONG == 64)
 273                 dev->limits.fmr_reserved_mtts = 0;
 274         else
 275                 dev->limits.fmr_reserved_mtts = request->fmr_reserved_mtts;
 276
 277         kfree(profile);
 278         return total_size;
 279 }