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