diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/profile.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/profile.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/profile.c b/drivers/net/ethernet/mellanox/mlx4/profile.c new file mode 100644 index 000000000..ba361c5fb --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx4/profile.c @@ -0,0 +1,270 @@ +/* + * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. + * Copyright (c) 2005 Mellanox Technologies. All rights reserved. + * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/slab.h> + +#include "mlx4.h" +#include "fw.h" + +enum { + MLX4_RES_QP, + MLX4_RES_RDMARC, + MLX4_RES_ALTC, + MLX4_RES_AUXC, + MLX4_RES_SRQ, + MLX4_RES_CQ, + MLX4_RES_EQ, + MLX4_RES_DMPT, + MLX4_RES_CMPT, + MLX4_RES_MTT, + MLX4_RES_MCG, + MLX4_RES_NUM +}; + +static const char *res_name[] = { + [MLX4_RES_QP] = "QP", + [MLX4_RES_RDMARC] = "RDMARC", + [MLX4_RES_ALTC] = "ALTC", + [MLX4_RES_AUXC] = "AUXC", + [MLX4_RES_SRQ] = "SRQ", + [MLX4_RES_CQ] = "CQ", + [MLX4_RES_EQ] = "EQ", + [MLX4_RES_DMPT] = "DMPT", + [MLX4_RES_CMPT] = "CMPT", + [MLX4_RES_MTT] = "MTT", + [MLX4_RES_MCG] = "MCG", +}; + +u64 mlx4_make_profile(struct mlx4_dev *dev, + struct mlx4_profile *request, + struct mlx4_dev_cap *dev_cap, + struct mlx4_init_hca_param *init_hca) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + struct mlx4_resource { + u64 size; + u64 start; + int type; + u32 num; + int log_num; + }; + + u64 total_size = 0; + struct mlx4_resource *profile; + struct sysinfo si; + int i, j; + + profile = kcalloc(MLX4_RES_NUM, sizeof(*profile), GFP_KERNEL); + if (!profile) + return -ENOMEM; + + /* + * We want to scale the number of MTTs with the size of the + * system memory, since it makes sense to register a lot of + * memory on a system with a lot of memory. As a heuristic, + * make sure we have enough MTTs to cover twice the system + * memory (with PAGE_SIZE entries). + * + * This number has to be a power of two and fit into 32 bits + * due to device limitations, so cap this at 2^31 as well. + * That limits us to 8TB of memory registration per HCA with + * 4KB pages, which is probably OK for the next few months. + */ + si_meminfo(&si); + request->num_mtt = + roundup_pow_of_two(max_t(unsigned, request->num_mtt, + min(1UL << (31 - log_mtts_per_seg), + (si.totalram << 1) >> log_mtts_per_seg))); + + + profile[MLX4_RES_QP].size = dev_cap->qpc_entry_sz; + profile[MLX4_RES_RDMARC].size = dev_cap->rdmarc_entry_sz; + profile[MLX4_RES_ALTC].size = dev_cap->altc_entry_sz; + profile[MLX4_RES_AUXC].size = dev_cap->aux_entry_sz; + profile[MLX4_RES_SRQ].size = dev_cap->srq_entry_sz; + profile[MLX4_RES_CQ].size = dev_cap->cqc_entry_sz; + profile[MLX4_RES_EQ].size = dev_cap->eqc_entry_sz; + profile[MLX4_RES_DMPT].size = dev_cap->dmpt_entry_sz; + profile[MLX4_RES_CMPT].size = dev_cap->cmpt_entry_sz; + profile[MLX4_RES_MTT].size = dev_cap->mtt_entry_sz; + profile[MLX4_RES_MCG].size = mlx4_get_mgm_entry_size(dev); + + profile[MLX4_RES_QP].num = request->num_qp; + profile[MLX4_RES_RDMARC].num = request->num_qp * request->rdmarc_per_qp; + profile[MLX4_RES_ALTC].num = request->num_qp; + profile[MLX4_RES_AUXC].num = request->num_qp; + profile[MLX4_RES_SRQ].num = request->num_srq; + profile[MLX4_RES_CQ].num = request->num_cq; + profile[MLX4_RES_EQ].num = mlx4_is_mfunc(dev) ? dev->phys_caps.num_phys_eqs : + min_t(unsigned, dev_cap->max_eqs, MAX_MSIX); + profile[MLX4_RES_DMPT].num = request->num_mpt; + profile[MLX4_RES_CMPT].num = MLX4_NUM_CMPTS; + profile[MLX4_RES_MTT].num = request->num_mtt * (1 << log_mtts_per_seg); + profile[MLX4_RES_MCG].num = request->num_mcg; + + for (i = 0; i < MLX4_RES_NUM; ++i) { + profile[i].type = i; + profile[i].num = roundup_pow_of_two(profile[i].num); + profile[i].log_num = ilog2(profile[i].num); + profile[i].size *= profile[i].num; + profile[i].size = max(profile[i].size, (u64) PAGE_SIZE); + } + + /* + * Sort the resources in decreasing order of size. Since they + * all have sizes that are powers of 2, we'll be able to keep + * resources aligned to their size and pack them without gaps + * using the sorted order. + */ + for (i = MLX4_RES_NUM; i > 0; --i) + for (j = 1; j < i; ++j) { + if (profile[j].size > profile[j - 1].size) + swap(profile[j], profile[j - 1]); + } + + for (i = 0; i < MLX4_RES_NUM; ++i) { + if (profile[i].size) { + profile[i].start = total_size; + total_size += profile[i].size; + } + + if (total_size > dev_cap->max_icm_sz) { + mlx4_err(dev, "Profile requires 0x%llx bytes; won't fit in 0x%llx bytes of context memory\n", + (unsigned long long) total_size, + (unsigned long long) dev_cap->max_icm_sz); + kfree(profile); + return -ENOMEM; + } + + if (profile[i].size) + mlx4_dbg(dev, " profile[%2d] (%6s): 2^%02d entries @ 0x%10llx, size 0x%10llx\n", + i, res_name[profile[i].type], + profile[i].log_num, + (unsigned long long) profile[i].start, + (unsigned long long) profile[i].size); + } + + mlx4_dbg(dev, "HCA context memory: reserving %d KB\n", + (int) (total_size >> 10)); + + for (i = 0; i < MLX4_RES_NUM; ++i) { + switch (profile[i].type) { + case MLX4_RES_QP: + dev->caps.num_qps = profile[i].num; + init_hca->qpc_base = profile[i].start; + init_hca->log_num_qps = profile[i].log_num; + break; + case MLX4_RES_RDMARC: + for (priv->qp_table.rdmarc_shift = 0; + request->num_qp << priv->qp_table.rdmarc_shift < profile[i].num; + ++priv->qp_table.rdmarc_shift) + ; /* nothing */ + dev->caps.max_qp_dest_rdma = 1 << priv->qp_table.rdmarc_shift; + priv->qp_table.rdmarc_base = (u32) profile[i].start; + init_hca->rdmarc_base = profile[i].start; + init_hca->log_rd_per_qp = priv->qp_table.rdmarc_shift; + break; + case MLX4_RES_ALTC: + init_hca->altc_base = profile[i].start; + break; + case MLX4_RES_AUXC: + init_hca->auxc_base = profile[i].start; + break; + case MLX4_RES_SRQ: + dev->caps.num_srqs = profile[i].num; + init_hca->srqc_base = profile[i].start; + init_hca->log_num_srqs = profile[i].log_num; + break; + case MLX4_RES_CQ: + dev->caps.num_cqs = profile[i].num; + init_hca->cqc_base = profile[i].start; + init_hca->log_num_cqs = profile[i].log_num; + break; + case MLX4_RES_EQ: + if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { + init_hca->log_num_eqs = 0x1f; + init_hca->eqc_base = profile[i].start; + init_hca->num_sys_eqs = dev_cap->num_sys_eqs; + } else { + dev->caps.num_eqs = roundup_pow_of_two( + min_t(unsigned, + dev_cap->max_eqs, + MAX_MSIX)); + init_hca->eqc_base = profile[i].start; + init_hca->log_num_eqs = ilog2(dev->caps.num_eqs); + } + break; + case MLX4_RES_DMPT: + dev->caps.num_mpts = profile[i].num; + priv->mr_table.mpt_base = profile[i].start; + init_hca->dmpt_base = profile[i].start; + init_hca->log_mpt_sz = profile[i].log_num; + break; + case MLX4_RES_CMPT: + init_hca->cmpt_base = profile[i].start; + break; + case MLX4_RES_MTT: + dev->caps.num_mtts = profile[i].num; + priv->mr_table.mtt_base = profile[i].start; + init_hca->mtt_base = profile[i].start; + break; + case MLX4_RES_MCG: + init_hca->mc_base = profile[i].start; + init_hca->log_mc_entry_sz = + ilog2(mlx4_get_mgm_entry_size(dev)); + init_hca->log_mc_table_sz = profile[i].log_num; + if (dev->caps.steering_mode == + MLX4_STEERING_MODE_DEVICE_MANAGED) { + dev->caps.num_mgms = profile[i].num; + } else { + init_hca->log_mc_hash_sz = + profile[i].log_num - 1; + dev->caps.num_mgms = profile[i].num >> 1; + dev->caps.num_amgms = profile[i].num >> 1; + } + break; + default: + break; + } + } + + /* + * PDs don't take any HCA memory, but we assign them as part + * of the HCA profile anyway. + */ + dev->caps.num_pds = MLX4_NUM_PDS; + + kfree(profile); + return total_size; +} |