kernel/2.6.29.6-aldebaran-rt/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/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/string.h>
  37 #include <linux/slab.h>
  38
  39 #include "mthca_profile.h"
  40
  41 enum {
  42         MTHCA_RES_QP,
  43         MTHCA_RES_EEC,
  44         MTHCA_RES_SRQ,
  45         MTHCA_RES_CQ,
  46         MTHCA_RES_EQP,
  47         MTHCA_RES_EEEC,
  48         MTHCA_RES_EQ,
  49         MTHCA_RES_RDB,
  50         MTHCA_RES_MCG,
  51         MTHCA_RES_MPT,
  52         MTHCA_RES_MTT,
  53         MTHCA_RES_UAR,
  54         MTHCA_RES_UDAV,
  55         MTHCA_RES_UARC,
  56         MTHCA_RES_NUM
  57 };
  58
  59 enum {
  60         MTHCA_NUM_EQS = 32,
  61         MTHCA_NUM_PDS = 1 << 15
  62 };
  63
  64 s64 mthca_make_profile(struct mthca_dev *dev,
  65                        struct mthca_profile *request,
  66                        struct mthca_dev_lim *dev_lim,
  67                        struct mthca_init_hca_param *init_hca)
  68 {
  69         struct mthca_resource {
  70                 u64 size;
  71                 u64 start;
  72                 int type;
  73                 int num;
  74                 int log_num;
  75         };
  76
  77         u64 mem_base, mem_avail;
  78         s64 total_size = 0;
  79         struct mthca_resource *profile;
  80         struct mthca_resource tmp;
  81         int i, j;
  82
  83         profile = kzalloc(MTHCA_RES_NUM * sizeof *profile, GFP_KERNEL);
  84         if (!profile)
  85                 return -ENOMEM;
  86
  87         profile[MTHCA_RES_QP].size   = dev_lim->qpc_entry_sz;
  88         profile[MTHCA_RES_EEC].size  = dev_lim->eec_entry_sz;
  89         profile[MTHCA_RES_SRQ].size  = dev_lim->srq_entry_sz;
  90         profile[MTHCA_RES_CQ].size   = dev_lim->cqc_entry_sz;
  91         profile[MTHCA_RES_EQP].size  = dev_lim->eqpc_entry_sz;
  92         profile[MTHCA_RES_EEEC].size = dev_lim->eeec_entry_sz;
  93         profile[MTHCA_RES_EQ].size   = dev_lim->eqc_entry_sz;
  94         profile[MTHCA_RES_RDB].size  = MTHCA_RDB_ENTRY_SIZE;
  95         profile[MTHCA_RES_MCG].size  = MTHCA_MGM_ENTRY_SIZE;
  96         profile[MTHCA_RES_MPT].size  = dev_lim->mpt_entry_sz;
  97         profile[MTHCA_RES_MTT].size  = MTHCA_MTT_SEG_SIZE;
  98         profile[MTHCA_RES_UAR].size  = dev_lim->uar_scratch_entry_sz;
  99         profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
 100         profile[MTHCA_RES_UARC].size = request->uarc_size;
 101
 102         profile[MTHCA_RES_QP].num    = request->num_qp;
 103         profile[MTHCA_RES_SRQ].num   = request->num_srq;
 104         profile[MTHCA_RES_EQP].num   = request->num_qp;
 105         profile[MTHCA_RES_RDB].num   = request->num_qp * request->rdb_per_qp;
 106         profile[MTHCA_RES_CQ].num    = request->num_cq;
 107         profile[MTHCA_RES_EQ].num    = MTHCA_NUM_EQS;
 108         profile[MTHCA_RES_MCG].num   = request->num_mcg;
 109         profile[MTHCA_RES_MPT].num   = request->num_mpt;
 110         profile[MTHCA_RES_MTT].num   = request->num_mtt;
 111         profile[MTHCA_RES_UAR].num   = request->num_uar;
 112         profile[MTHCA_RES_UARC].num  = request->num_uar;
 113         profile[MTHCA_RES_UDAV].num  = request->num_udav;
 114
 115         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 116                 profile[i].type     = i;
 117                 profile[i].log_num  = max(ffs(profile[i].num) - 1, 0);
 118                 profile[i].size    *= profile[i].num;
 119                 if (mthca_is_memfree(dev))
 120                         profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
 121         }
 122
 123         if (mthca_is_memfree(dev)) {
 124                 mem_base  = 0;
 125                 mem_avail = dev_lim->hca.arbel.max_icm_sz;
 126         } else {
 127                 mem_base  = dev->ddr_start;
 128                 mem_avail = dev->fw.tavor.fw_start - dev->ddr_start;
 129         }
 130
 131         /*
 132          * Sort the resources in decreasing order of size.  Since they
 133          * all have sizes that are powers of 2, we'll be able to keep
 134          * resources aligned to their size and pack them without gaps
 135          * using the sorted order.
 136          */
 137         for (i = MTHCA_RES_NUM; i > 0; --i)
 138                 for (j = 1; j < i; ++j) {
 139                         if (profile[j].size > profile[j - 1].size) {
 140                                 tmp            = profile[j];
 141                                 profile[j]     = profile[j - 1];
 142                                 profile[j - 1] = tmp;
 143                         }
 144                 }
 145
 146         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 147                 if (profile[i].size) {
 148                         profile[i].start = mem_base + total_size;
 149                         total_size      += profile[i].size;
 150                 }
 151                 if (total_size > mem_avail) {
 152                         mthca_err(dev, "Profile requires 0x%llx bytes; "
 153                                   "won't fit in 0x%llx bytes of context memory.\n",
 154                                   (unsigned long long) total_size,
 155                                   (unsigned long long) mem_avail);
 156                         kfree(profile);
 157                         return -ENOMEM;
 158                 }
 159
 160                 if (profile[i].size)
 161                         mthca_dbg(dev, "profile[%2d]--%2d/%2d @ 0x%16llx "
 162                                   "(size 0x%8llx)\n",
 163                                   i, profile[i].type, profile[i].log_num,
 164                                   (unsigned long long) profile[i].start,
 165                                   (unsigned long long) profile[i].size);
 166         }
 167
 168         if (mthca_is_memfree(dev))
 169                 mthca_dbg(dev, "HCA context memory: reserving %d KB\n",
 170                           (int) (total_size >> 10));
 171         else
 172                 mthca_dbg(dev, "HCA memory: allocated %d KB/%d KB (%d KB free)\n",
 173                           (int) (total_size >> 10), (int) (mem_avail >> 10),
 174                           (int) ((mem_avail - total_size) >> 10));
 175
 176         for (i = 0; i < MTHCA_RES_NUM; ++i) {
 177                 switch (profile[i].type) {
 178                 case MTHCA_RES_QP:
 179                         dev->limits.num_qps   = profile[i].num;
 180                         init_hca->qpc_base    = profile[i].start;
 181                         init_hca->log_num_qps = profile[i].log_num;
 182                         break;
 183                 case MTHCA_RES_EEC:
 184                         dev->limits.num_eecs   = profile[i].num;
 185                         init_hca->eec_base     = profile[i].start;
 186                         init_hca->log_num_eecs = profile[i].log_num;
 187                         break;
 188                 case MTHCA_RES_SRQ:
 189                         dev->limits.num_srqs   = profile[i].num;
 190                         init_hca->srqc_base    = profile[i].start;
 191                         init_hca->log_num_srqs = profile[i].log_num;
 192                         break;
 193                 case MTHCA_RES_CQ:
 194                         dev->limits.num_cqs   = profile[i].num;
 195                         init_hca->cqc_base    = profile[i].start;
 196                         init_hca->log_num_cqs = profile[i].log_num;
 197                         break;
 198                 case MTHCA_RES_EQP:
 199                         init_hca->eqpc_base = profile[i].start;
 200                         break;
 201                 case MTHCA_RES_EEEC:
 202                         init_hca->eeec_base = profile[i].start;
 203                         break;
 204                 case MTHCA_RES_EQ:
 205                         dev->limits.num_eqs   = profile[i].num;
 206                         init_hca->eqc_base    = profile[i].start;
 207                         init_hca->log_num_eqs = profile[i].log_num;
 208                         break;
 209                 case MTHCA_RES_RDB:
 210                         for (dev->qp_table.rdb_shift = 0;
 211                              request->num_qp << dev->qp_table.rdb_shift < profile[i].num;
 212                              ++dev->qp_table.rdb_shift)
 213                                 ; /* nothing */
 214                         dev->qp_table.rdb_base    = (u32) profile[i].start;
 215                         init_hca->rdb_base        = profile[i].start;
 216                         break;
 217                 case MTHCA_RES_MCG:
 218                         dev->limits.num_mgms      = profile[i].num >> 1;
 219                         dev->limits.num_amgms     = profile[i].num >> 1;
 220                         init_hca->mc_base         = profile[i].start;
 221                         init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
 222                         init_hca->log_mc_table_sz = profile[i].log_num;
 223                         init_hca->mc_hash_sz      = 1 << (profile[i].log_num - 1);
 224                         break;
 225                 case MTHCA_RES_MPT:
 226                         dev->limits.num_mpts   = profile[i].num;
 227                         dev->mr_table.mpt_base = profile[i].start;
 228                         init_hca->mpt_base     = profile[i].start;
 229                         init_hca->log_mpt_sz   = profile[i].log_num;
 230                         break;
 231                 case MTHCA_RES_MTT:
 232                         dev->limits.num_mtt_segs = profile[i].num;
 233                         dev->mr_table.mtt_base   = profile[i].start;
 234                         init_hca->mtt_base       = profile[i].start;
 235                         init_hca->mtt_seg_sz     = ffs(MTHCA_MTT_SEG_SIZE) - 7;
 236                         break;
 237                 case MTHCA_RES_UAR:
 238                         dev->limits.num_uars       = profile[i].num;
 239                         init_hca->uar_scratch_base = profile[i].start;
 240                         break;
 241                 case MTHCA_RES_UDAV:
 242                         dev->av_table.ddr_av_base = profile[i].start;
 243                         dev->av_table.num_ddr_avs = profile[i].num;
 244                         break;
 245                 case MTHCA_RES_UARC:
 246                         dev->uar_table.uarc_size = request->uarc_size;
 247                         dev->uar_table.uarc_base = profile[i].start;
 248                         init_hca->uarc_base      = profile[i].start;
 249                         init_hca->log_uarc_sz    = ffs(request->uarc_size) - 13;
 250                         init_hca->log_uar_sz     = ffs(request->num_uar) - 1;
 251                         break;
 252                 default:
 253                         break;
 254                 }
 255         }
 256
 257         /*
 258          * PDs don't take any HCA memory, but we assign them as part
 259          * of the HCA profile anyway.
 260          */
 261         dev->limits.num_pds = MTHCA_NUM_PDS;
 262
 263         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT &&
 264             init_hca->log_mpt_sz > 23) {
 265                 mthca_warn(dev, "MPT table too large (requested size 2^%d >= 2^24)\n",
 266                            init_hca->log_mpt_sz);
 267                 mthca_warn(dev, "Disabling memory key throughput optimization.\n");
 268                 dev->mthca_flags &= ~MTHCA_FLAG_SINAI_OPT;
 269         }
 270
 271         /*
 272          * For Tavor, FMRs use ioremapped PCI memory. For 32 bit
 273          * systems it may use too much vmalloc space to map all MTT
 274          * memory, so we reserve some MTTs for FMR access, taking them
 275          * out of the MR pool. They don't use additional memory, but
 276          * we assign them as part of the HCA profile anyway.
 277          */
 278         if (mthca_is_memfree(dev) || BITS_PER_LONG == 64)
 279                 dev->limits.fmr_reserved_mtts = 0;
 280         else
 281                 dev->limits.fmr_reserved_mtts = request->fmr_reserved_mtts;
 282
 283         kfree(profile);
 284         return total_size;
 285 }