1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 4 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #include <linux/slab.h> 36 37 #include "mlx4.h" 38 #include "fw.h" 39 40 enum { 41 MLX4_RES_QP, 42 MLX4_RES_RDMARC, 43 MLX4_RES_ALTC, 44 MLX4_RES_AUXC, 45 MLX4_RES_SRQ, 46 MLX4_RES_CQ, 47 MLX4_RES_EQ, 48 MLX4_RES_DMPT, 49 MLX4_RES_CMPT, 50 MLX4_RES_MTT, 51 MLX4_RES_MCG, 52 MLX4_RES_NUM 53 }; 54 55 static const char *res_name[] = { 56 [MLX4_RES_QP] = "QP", 57 [MLX4_RES_RDMARC] = "RDMARC", 58 [MLX4_RES_ALTC] = "ALTC", 59 [MLX4_RES_AUXC] = "AUXC", 60 [MLX4_RES_SRQ] = "SRQ", 61 [MLX4_RES_CQ] = "CQ", 62 [MLX4_RES_EQ] = "EQ", 63 [MLX4_RES_DMPT] = "DMPT", 64 [MLX4_RES_CMPT] = "CMPT", 65 [MLX4_RES_MTT] = "MTT", 66 [MLX4_RES_MCG] = "MCG", 67 }; 68 69 u64 mlx4_make_profile(struct mlx4_dev *dev, 70 struct mlx4_profile *request, 71 struct mlx4_dev_cap *dev_cap, 72 struct mlx4_init_hca_param *init_hca) 73 { 74 struct mlx4_priv *priv = mlx4_priv(dev); 75 struct mlx4_resource { 76 u64 size; 77 u64 start; 78 int type; 79 u32 num; 80 int log_num; 81 }; 82 83 u64 total_size = 0; 84 struct mlx4_resource *profile; 85 struct sysinfo si; 86 int i, j; 87 88 profile = kcalloc(MLX4_RES_NUM, sizeof(*profile), GFP_KERNEL); 89 if (!profile) 90 return -ENOMEM; 91 92 /* 93 * We want to scale the number of MTTs with the size of the 94 * system memory, since it makes sense to register a lot of 95 * memory on a system with a lot of memory. As a heuristic, 96 * make sure we have enough MTTs to cover twice the system 97 * memory (with PAGE_SIZE entries). 98 * 99 * This number has to be a power of two and fit into 32 bits 100 * due to device limitations, so cap this at 2^31 as well. 101 * That limits us to 8TB of memory registration per HCA with 102 * 4KB pages, which is probably OK for the next few months. 103 */ 104 si_meminfo(&si); 105 request->num_mtt = 106 roundup_pow_of_two(max_t(unsigned, request->num_mtt, 107 min(1UL << (31 - log_mtts_per_seg), 108 si.totalram >> (log_mtts_per_seg - 1)))); 109 110 profile[MLX4_RES_QP].size = dev_cap->qpc_entry_sz; 111 profile[MLX4_RES_RDMARC].size = dev_cap->rdmarc_entry_sz; 112 profile[MLX4_RES_ALTC].size = dev_cap->altc_entry_sz; 113 profile[MLX4_RES_AUXC].size = dev_cap->aux_entry_sz; 114 profile[MLX4_RES_SRQ].size = dev_cap->srq_entry_sz; 115 profile[MLX4_RES_CQ].size = dev_cap->cqc_entry_sz; 116 profile[MLX4_RES_EQ].size = dev_cap->eqc_entry_sz; 117 profile[MLX4_RES_DMPT].size = dev_cap->dmpt_entry_sz; 118 profile[MLX4_RES_CMPT].size = dev_cap->cmpt_entry_sz; 119 profile[MLX4_RES_MTT].size = dev_cap->mtt_entry_sz; 120 profile[MLX4_RES_MCG].size = mlx4_get_mgm_entry_size(dev); 121 122 profile[MLX4_RES_QP].num = request->num_qp; 123 profile[MLX4_RES_RDMARC].num = request->num_qp * request->rdmarc_per_qp; 124 profile[MLX4_RES_ALTC].num = request->num_qp; 125 profile[MLX4_RES_AUXC].num = request->num_qp; 126 profile[MLX4_RES_SRQ].num = request->num_srq; 127 profile[MLX4_RES_CQ].num = request->num_cq; 128 profile[MLX4_RES_EQ].num = mlx4_is_mfunc(dev) ? dev->phys_caps.num_phys_eqs : 129 min_t(unsigned, dev_cap->max_eqs, MAX_MSIX); 130 profile[MLX4_RES_DMPT].num = request->num_mpt; 131 profile[MLX4_RES_CMPT].num = MLX4_NUM_CMPTS; 132 profile[MLX4_RES_MTT].num = request->num_mtt * (1 << log_mtts_per_seg); 133 profile[MLX4_RES_MCG].num = request->num_mcg; 134 135 for (i = 0; i < MLX4_RES_NUM; ++i) { 136 profile[i].type = i; 137 profile[i].num = roundup_pow_of_two(profile[i].num); 138 profile[i].log_num = ilog2(profile[i].num); 139 profile[i].size *= profile[i].num; 140 profile[i].size = max(profile[i].size, (u64) PAGE_SIZE); 141 } 142 143 /* 144 * Sort the resources in decreasing order of size. Since they 145 * all have sizes that are powers of 2, we'll be able to keep 146 * resources aligned to their size and pack them without gaps 147 * using the sorted order. 148 */ 149 for (i = MLX4_RES_NUM; i > 0; --i) 150 for (j = 1; j < i; ++j) { 151 if (profile[j].size > profile[j - 1].size) 152 swap(profile[j], profile[j - 1]); 153 } 154 155 for (i = 0; i < MLX4_RES_NUM; ++i) { 156 if (profile[i].size) { 157 profile[i].start = total_size; 158 total_size += profile[i].size; 159 } 160 161 if (total_size > dev_cap->max_icm_sz) { 162 mlx4_err(dev, "Profile requires 0x%llx bytes; won't fit in 0x%llx bytes of context memory\n", 163 (unsigned long long) total_size, 164 (unsigned long long) dev_cap->max_icm_sz); 165 kfree(profile); 166 return -ENOMEM; 167 } 168 169 if (profile[i].size) 170 mlx4_dbg(dev, " profile[%2d] (%6s): 2^%02d entries @ 0x%10llx, size 0x%10llx\n", 171 i, res_name[profile[i].type], 172 profile[i].log_num, 173 (unsigned long long) profile[i].start, 174 (unsigned long long) profile[i].size); 175 } 176 177 mlx4_dbg(dev, "HCA context memory: reserving %d KB\n", 178 (int) (total_size >> 10)); 179 180 for (i = 0; i < MLX4_RES_NUM; ++i) { 181 switch (profile[i].type) { 182 case MLX4_RES_QP: 183 dev->caps.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 MLX4_RES_RDMARC: 188 for (priv->qp_table.rdmarc_shift = 0; 189 request->num_qp << priv->qp_table.rdmarc_shift < profile[i].num; 190 ++priv->qp_table.rdmarc_shift) 191 ; /* nothing */ 192 dev->caps.max_qp_dest_rdma = 1 << priv->qp_table.rdmarc_shift; 193 priv->qp_table.rdmarc_base = (u32) profile[i].start; 194 init_hca->rdmarc_base = profile[i].start; 195 init_hca->log_rd_per_qp = priv->qp_table.rdmarc_shift; 196 break; 197 case MLX4_RES_ALTC: 198 init_hca->altc_base = profile[i].start; 199 break; 200 case MLX4_RES_AUXC: 201 init_hca->auxc_base = profile[i].start; 202 break; 203 case MLX4_RES_SRQ: 204 dev->caps.num_srqs = profile[i].num; 205 init_hca->srqc_base = profile[i].start; 206 init_hca->log_num_srqs = profile[i].log_num; 207 break; 208 case MLX4_RES_CQ: 209 dev->caps.num_cqs = profile[i].num; 210 init_hca->cqc_base = profile[i].start; 211 init_hca->log_num_cqs = profile[i].log_num; 212 break; 213 case MLX4_RES_EQ: 214 if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { 215 init_hca->log_num_eqs = 0x1f; 216 init_hca->eqc_base = profile[i].start; 217 init_hca->num_sys_eqs = dev_cap->num_sys_eqs; 218 } else { 219 dev->caps.num_eqs = roundup_pow_of_two( 220 min_t(unsigned, 221 dev_cap->max_eqs, 222 MAX_MSIX)); 223 init_hca->eqc_base = profile[i].start; 224 init_hca->log_num_eqs = ilog2(dev->caps.num_eqs); 225 } 226 break; 227 case MLX4_RES_DMPT: 228 dev->caps.num_mpts = profile[i].num; 229 priv->mr_table.mpt_base = profile[i].start; 230 init_hca->dmpt_base = profile[i].start; 231 init_hca->log_mpt_sz = profile[i].log_num; 232 break; 233 case MLX4_RES_CMPT: 234 init_hca->cmpt_base = profile[i].start; 235 break; 236 case MLX4_RES_MTT: 237 dev->caps.num_mtts = profile[i].num; 238 priv->mr_table.mtt_base = profile[i].start; 239 init_hca->mtt_base = profile[i].start; 240 break; 241 case MLX4_RES_MCG: 242 init_hca->mc_base = profile[i].start; 243 init_hca->log_mc_entry_sz = 244 ilog2(mlx4_get_mgm_entry_size(dev)); 245 init_hca->log_mc_table_sz = profile[i].log_num; 246 if (dev->caps.steering_mode == 247 MLX4_STEERING_MODE_DEVICE_MANAGED) { 248 dev->caps.num_mgms = profile[i].num; 249 } else { 250 init_hca->log_mc_hash_sz = 251 profile[i].log_num - 1; 252 dev->caps.num_mgms = profile[i].num >> 1; 253 dev->caps.num_amgms = profile[i].num >> 1; 254 } 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->caps.num_pds = MLX4_NUM_PDS; 266 267 kfree(profile); 268 return total_size; 269 } 270