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  * $Id: mthca_profile.c 1349 2004-12-16 21:09:43Z roland $
  34  */
  35
  36 #include <linux/module.h>
  37 #include <linux/moduleparam.h>
  38 #include <linux/string.h>
  39 #include <linux/slab.h>
  40
  41 #include "mthca_profile.h"
  42
  43 enum {
  44         MTHCA_RES_QP,
  45         MTHCA_RES_EEC,
  46         MTHCA_RES_SRQ,
  47         MTHCA_RES_CQ,
  48         MTHCA_RES_EQP,
  49         MTHCA_RES_EEEC,
  50         MTHCA_RES_EQ,
  51         MTHCA_RES_RDB,
  52         MTHCA_RES_MCG,
  53         MTHCA_RES_MPT,
  54         MTHCA_RES_MTT,
  55         MTHCA_RES_UAR,
  56         MTHCA_RES_UDAV,
  57         MTHCA_RES_UARC,
  58         MTHCA_RES_NUM
  59 };
  60
  61 enum {
  62         MTHCA_NUM_EQS = 32,
  63         MTHCA_NUM_PDS = 1 << 15
  64 };
  65
  66 u64 mthca_make_profile(struct mthca_dev *dev,
  67                        struct mthca_profile *request,
  68                        struct mthca_dev_lim *dev_lim,
  69                        struct mthca_init_hca_param *init_hca)
  70 {
  71         struct mthca_resource {
  72                 u64 size;
  73                 u64 start;
  74                 int type;
  75                 int num;
  76                 int log_num;
  77         };
  78
  79         u64 mem_base, mem_avail;
  80         u64 total_size = 0;
  81         struct mthca_resource *profile;
  82         struct mthca_resource tmp;
  83         int i, j;
  84
  85         profile = kzalloc(MTHCA_RES_NUM * sizeof *profile, GFP_KERNEL);
  86         if (!profile)
  87                 return -ENOMEM;
  88
  89         profile[MTHCA_RES_QP].size   = dev_lim->qpc_entry_sz;
  90         profile[MTHCA_RES_EEC].size  = dev_lim->eec_entry_sz;
  91         profile[MTHCA_RES_SRQ].size  = dev_lim->srq_entry_sz;
  92         profile[MTHCA_RES_CQ].size   = dev_lim->cqc_entry_sz;
  93         profile[MTHCA_RES_EQP].size  = dev_lim->eqpc_entry_sz;
  94         profile[MTHCA_RES_EEEC].size = dev_lim->eeec_entry_sz;
  95         profile[MTHCA_RES_EQ].size   = dev_lim->eqc_entry_sz;
  96         profile[MTHCA_RES_RDB].size  = MTHCA_RDB_ENTRY_SIZE;
  97         profile[MTHCA_RES_MCG].size  = MTHCA_MGM_ENTRY_SIZE;
  98         profile[MTHCA_RES_MPT].size  = dev_lim->mpt_entry_sz;
  99         profile[MTHCA_RES_MTT].size  = MTHCA_MTT_SEG_SIZE;
 100         profile[MTHCA_RES_UAR].size  = dev_lim->uar_scratch_entry_sz;
 101         profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
 102         profile[MTHCA_RES_UARC].size = request->uarc_size;
 103
 104         profile[MTHCA_RES_QP].num    = request->num_qp;
 105         profile[MTHCA_RES_SRQ].num   = request->num_srq;
 106         profile[MTHCA_RES_EQP].num   = request->num_qp;
 107         profile[MTHCA_RES_RDB].num   = request->num_qp * request->rdb_per_qp;
 108         profile[MTHCA_RES_CQ].num    = request->num_cq;
 109         profile[MTHCA_RES_EQ].num    = MTHCA_NUM_EQS;
 110         profile[MTHCA_RES_MCG].num   = request->num_mcg;
 111         profile[MTHCA_RES_MPT].num   = request->num_mpt;
 112         profile[MTHCA_RES_MTT].num   = request->num_mtt;
 113         profile[MTHCA_RES_UAR].num   = request->num_uar;
 114         profile[MTHCA_RES_UARC].num  = request->num_uar;
 115         profile[MTHCA_RES_UDAV].num  = request->num_udav;
 116
 117         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 118                 profile[i].type     = i;
 119                 profile[i].log_num  = max(ffs(profile[i].num) - 1, 0);
 120                 profile[i].size    *= profile[i].num;
 121                 if (mthca_is_memfree(dev))
 122                         profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
 123         }
 124
 125         if (mthca_is_memfree(dev)) {
 126                 mem_base  = 0;
 127                 mem_avail = dev_lim->hca.arbel.max_icm_sz;
 128         } else {
 129                 mem_base  = dev->ddr_start;
 130                 mem_avail = dev->fw.tavor.fw_start - dev->ddr_start;
 131         }
 132
 133         /*
 134          * Sort the resources in decreasing order of size.  Since they
 135          * all have sizes that are powers of 2, we'll be able to keep
 136          * resources aligned to their size and pack them without gaps
 137          * using the sorted order.
 138          */
 139         for (i = MTHCA_RES_NUM; i > 0; --i)
 140                 for (j = 1; j < i; ++j) {
 141                         if (profile[j].size > profile[j - 1].size) {
 142                                 tmp            = profile[j];
 143                                 profile[j]     = profile[j - 1];
 144                                 profile[j - 1] = tmp;
 145                         }
 146                 }
 147
 148         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 149                 if (profile[i].size) {
 150                         profile[i].start = mem_base + total_size;
 151                         total_size      += profile[i].size;
 152                 }
 153                 if (total_size > mem_avail) {
 154                         mthca_err(dev, "Profile requires 0x%llx bytes; "
 155                                   "won't fit in 0x%llx bytes of context memory.\n",
 156                                   (unsigned long long) total_size,
 157                                   (unsigned long long) mem_avail);
 158                         kfree(profile);
 159                         return -ENOMEM;
 160                 }
 161
 162                 if (profile[i].size)
 163                         mthca_dbg(dev, "profile[%2d]--%2d/%2d @ 0x%16llx "
 164                                   "(size 0x%8llx)\n",
 165                                   i, profile[i].type, profile[i].log_num,
 166                                   (unsigned long long) profile[i].start,
 167                                   (unsigned long long) profile[i].size);
 168         }
 169
 170         if (mthca_is_memfree(dev))
 171                 mthca_dbg(dev, "HCA context memory: reserving %d KB\n",
 172                           (int) (total_size >> 10));
 173         else
 174                 mthca_dbg(dev, "HCA memory: allocated %d KB/%d KB (%d KB free)\n",
 175                           (int) (total_size >> 10), (int) (mem_avail >> 10),
 176                           (int) ((mem_avail - total_size) >> 10));
 177
 178         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 179                 switch (profile[i].type) {
 180                 case MTHCA_RES_QP:
 181                         dev->limits.num_qps   = profile[i].num;
 182                         init_hca->qpc_base    = profile[i].start;
 183                         init_hca->log_num_qps = profile[i].log_num;
 184                         break;
 185                 case MTHCA_RES_EEC:
 186                         dev->limits.num_eecs   = profile[i].num;
 187                         init_hca->eec_base     = profile[i].start;
 188                         init_hca->log_num_eecs = profile[i].log_num;
 189                         break;
 190                 case MTHCA_RES_SRQ:
 191                         dev->limits.num_srqs   = profile[i].num;
 192                         init_hca->srqc_base    = profile[i].start;
 193                         init_hca->log_num_srqs = profile[i].log_num;
 194                         break;
 195                 case MTHCA_RES_CQ:
 196                         dev->limits.num_cqs   = profile[i].num;
 197                         init_hca->cqc_base    = profile[i].start;
 198                         init_hca->log_num_cqs = profile[i].log_num;
 199                         break;
 200                 case MTHCA_RES_EQP:
 201                         init_hca->eqpc_base = profile[i].start;
 202                         break;
 203                 case MTHCA_RES_EEEC:
 204                         init_hca->eeec_base = profile[i].start;
 205                         break;
 206                 case MTHCA_RES_EQ:
 207                         dev->limits.num_eqs   = profile[i].num;
 208                         init_hca->eqc_base    = profile[i].start;
 209                         init_hca->log_num_eqs = profile[i].log_num;
 210                         break;
 211                 case MTHCA_RES_RDB:
 212                         for (dev->qp_table.rdb_shift = 0;
 213                              request->num_qp << dev->qp_table.rdb_shift < profile[i].num;
 214                              ++dev->qp_table.rdb_shift)
 215                                 ; /* nothing */
 216                         dev->qp_table.rdb_base    = (u32) profile[i].start;
 217                         init_hca->rdb_base        = profile[i].start;
 218                         break;
 219                 case MTHCA_RES_MCG:
 220                         dev->limits.num_mgms      = profile[i].num >> 1;
 221                         dev->limits.num_amgms     = profile[i].num >> 1;
 222                         init_hca->mc_base         = profile[i].start;
 223                         init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
 224                         init_hca->log_mc_table_sz = profile[i].log_num;
 225                         init_hca->mc_hash_sz      = 1 << (profile[i].log_num - 1);
 226                         break;
 227                 case MTHCA_RES_MPT:
 228                         dev->limits.num_mpts   = profile[i].num;
 229                         dev->mr_table.mpt_base = profile[i].start;
 230                         init_hca->mpt_base     = profile[i].start;
 231                         init_hca->log_mpt_sz   = profile[i].log_num;
 232                         break;
 233                 case MTHCA_RES_MTT:
 234                         dev->limits.num_mtt_segs = profile[i].num;
 235                         dev->mr_table.mtt_base   = profile[i].start;
 236                         init_hca->mtt_base       = profile[i].start;
 237                         init_hca->mtt_seg_sz     = ffs(MTHCA_MTT_SEG_SIZE) - 7;
 238                         break;
 239                 case MTHCA_RES_UAR:
 240                         dev->limits.num_uars       = profile[i].num;
 241                         init_hca->uar_scratch_base = profile[i].start;
 242                         break;
 243                 case MTHCA_RES_UDAV:
 244                         dev->av_table.ddr_av_base = profile[i].start;
 245                         dev->av_table.num_ddr_avs = profile[i].num;
 246                         break;
 247                 case MTHCA_RES_UARC:
 248                         dev->uar_table.uarc_size = request->uarc_size;
 249                         dev->uar_table.uarc_base = profile[i].start;
 250                         init_hca->uarc_base      = profile[i].start;
 251                         init_hca->log_uarc_sz    = ffs(request->uarc_size) - 13;
 252                         init_hca->log_uar_sz     = ffs(request->num_uar) - 1;
 253                         break;
 254                 default:
 255                         break;
 256                 }
 257         }
 258
 259         /*
 260          * PDs don't take any HCA memory, but we assign them as part
 261          * of the HCA profile anyway.
 262          */
 263         dev->limits.num_pds = MTHCA_NUM_PDS;
 264
 265         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT &&
 266             init_hca->log_mpt_sz > 23) {
 267                 mthca_warn(dev, "MPT table too large (requested size 2^%d >= 2^24)\n",
 268                            init_hca->log_mpt_sz);
 269                 mthca_warn(dev, "Disabling memory key throughput optimization.\n");
 270                 dev->mthca_flags &= ~MTHCA_FLAG_SINAI_OPT;
 271         }
 272
 273         /*
 274          * For Tavor, FMRs use ioremapped PCI memory. For 32 bit
 275          * systems it may use too much vmalloc space to map all MTT
 276          * memory, so we reserve some MTTs for FMR access, taking them
 277          * out of the MR pool. They don't use additional memory, but
 278          * we assign them as part of the HCA profile anyway.
 279          */
 280         if (mthca_is_memfree(dev) || BITS_PER_LONG == 64)
 281                 dev->limits.fmr_reserved_mtts = 0;
 282         else
 283                 dev->limits.fmr_reserved_mtts = request->fmr_reserved_mtts;
 284
 285         kfree(profile);
 286         return total_size;
 287 }