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 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 /* 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)) 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 } 280