282 lines
9.1 KiB
C
282 lines
9.1 KiB
C
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/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include "mthca_profile.h"
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enum {
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MTHCA_RES_QP,
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MTHCA_RES_EEC,
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MTHCA_RES_SRQ,
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MTHCA_RES_CQ,
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MTHCA_RES_EQP,
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MTHCA_RES_EEEC,
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MTHCA_RES_EQ,
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MTHCA_RES_RDB,
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MTHCA_RES_MCG,
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MTHCA_RES_MPT,
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MTHCA_RES_MTT,
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MTHCA_RES_UAR,
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MTHCA_RES_UDAV,
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MTHCA_RES_UARC,
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MTHCA_RES_NUM
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};
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enum {
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MTHCA_NUM_EQS = 32,
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MTHCA_NUM_PDS = 1 << 15
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};
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s64 mthca_make_profile(struct mthca_dev *dev,
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struct mthca_profile *request,
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struct mthca_dev_lim *dev_lim,
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struct mthca_init_hca_param *init_hca)
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{
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struct mthca_resource {
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u64 size;
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u64 start;
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int type;
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int num;
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int log_num;
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};
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u64 mem_base, mem_avail;
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s64 total_size = 0;
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struct mthca_resource *profile;
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int i, j;
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profile = kzalloc(MTHCA_RES_NUM * sizeof *profile, GFP_KERNEL);
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if (!profile)
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return -ENOMEM;
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profile[MTHCA_RES_QP].size = dev_lim->qpc_entry_sz;
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profile[MTHCA_RES_EEC].size = dev_lim->eec_entry_sz;
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profile[MTHCA_RES_SRQ].size = dev_lim->srq_entry_sz;
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profile[MTHCA_RES_CQ].size = dev_lim->cqc_entry_sz;
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profile[MTHCA_RES_EQP].size = dev_lim->eqpc_entry_sz;
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profile[MTHCA_RES_EEEC].size = dev_lim->eeec_entry_sz;
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profile[MTHCA_RES_EQ].size = dev_lim->eqc_entry_sz;
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profile[MTHCA_RES_RDB].size = MTHCA_RDB_ENTRY_SIZE;
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profile[MTHCA_RES_MCG].size = MTHCA_MGM_ENTRY_SIZE;
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profile[MTHCA_RES_MPT].size = dev_lim->mpt_entry_sz;
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profile[MTHCA_RES_MTT].size = dev->limits.mtt_seg_size;
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profile[MTHCA_RES_UAR].size = dev_lim->uar_scratch_entry_sz;
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profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
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profile[MTHCA_RES_UARC].size = request->uarc_size;
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profile[MTHCA_RES_QP].num = request->num_qp;
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profile[MTHCA_RES_SRQ].num = request->num_srq;
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profile[MTHCA_RES_EQP].num = request->num_qp;
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profile[MTHCA_RES_RDB].num = request->num_qp * request->rdb_per_qp;
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profile[MTHCA_RES_CQ].num = request->num_cq;
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profile[MTHCA_RES_EQ].num = MTHCA_NUM_EQS;
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profile[MTHCA_RES_MCG].num = request->num_mcg;
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profile[MTHCA_RES_MPT].num = request->num_mpt;
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profile[MTHCA_RES_MTT].num = request->num_mtt;
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profile[MTHCA_RES_UAR].num = request->num_uar;
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profile[MTHCA_RES_UARC].num = request->num_uar;
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profile[MTHCA_RES_UDAV].num = request->num_udav;
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for (i = 0; i < MTHCA_RES_NUM; ++i) {
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profile[i].type = i;
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profile[i].log_num = max(ffs(profile[i].num) - 1, 0);
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profile[i].size *= profile[i].num;
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if (mthca_is_memfree(dev))
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profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
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}
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if (mthca_is_memfree(dev)) {
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mem_base = 0;
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mem_avail = dev_lim->hca.arbel.max_icm_sz;
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} else {
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mem_base = dev->ddr_start;
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mem_avail = dev->fw.tavor.fw_start - dev->ddr_start;
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}
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/*
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* Sort the resources in decreasing order of size. Since they
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* all have sizes that are powers of 2, we'll be able to keep
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* resources aligned to their size and pack them without gaps
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* using the sorted order.
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*/
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for (i = MTHCA_RES_NUM; i > 0; --i)
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for (j = 1; j < i; ++j) {
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if (profile[j].size > profile[j - 1].size)
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swap(profile[j], profile[j - 1]);
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}
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for (i = 0; i < MTHCA_RES_NUM; ++i) {
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if (profile[i].size) {
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profile[i].start = mem_base + total_size;
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total_size += profile[i].size;
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}
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if (total_size > mem_avail) {
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mthca_err(dev, "Profile requires 0x%llx bytes; "
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"won't fit in 0x%llx bytes of context memory.\n",
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(unsigned long long) total_size,
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(unsigned long long) mem_avail);
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kfree(profile);
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return -ENOMEM;
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}
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if (profile[i].size)
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mthca_dbg(dev, "profile[%2d]--%2d/%2d @ 0x%16llx "
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"(size 0x%8llx)\n",
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i, profile[i].type, profile[i].log_num,
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(unsigned long long) profile[i].start,
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(unsigned long long) profile[i].size);
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}
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if (mthca_is_memfree(dev))
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mthca_dbg(dev, "HCA context memory: reserving %d KB\n",
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(int) (total_size >> 10));
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else
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mthca_dbg(dev, "HCA memory: allocated %d KB/%d KB (%d KB free)\n",
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(int) (total_size >> 10), (int) (mem_avail >> 10),
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(int) ((mem_avail - total_size) >> 10));
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for (i = 0; i < MTHCA_RES_NUM; ++i) {
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switch (profile[i].type) {
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case MTHCA_RES_QP:
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dev->limits.num_qps = profile[i].num;
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init_hca->qpc_base = profile[i].start;
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init_hca->log_num_qps = profile[i].log_num;
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break;
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case MTHCA_RES_EEC:
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dev->limits.num_eecs = profile[i].num;
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init_hca->eec_base = profile[i].start;
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init_hca->log_num_eecs = profile[i].log_num;
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break;
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case MTHCA_RES_SRQ:
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dev->limits.num_srqs = profile[i].num;
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init_hca->srqc_base = profile[i].start;
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init_hca->log_num_srqs = profile[i].log_num;
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break;
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case MTHCA_RES_CQ:
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dev->limits.num_cqs = profile[i].num;
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init_hca->cqc_base = profile[i].start;
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init_hca->log_num_cqs = profile[i].log_num;
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break;
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case MTHCA_RES_EQP:
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init_hca->eqpc_base = profile[i].start;
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break;
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case MTHCA_RES_EEEC:
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init_hca->eeec_base = profile[i].start;
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break;
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case MTHCA_RES_EQ:
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dev->limits.num_eqs = profile[i].num;
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init_hca->eqc_base = profile[i].start;
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init_hca->log_num_eqs = profile[i].log_num;
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break;
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case MTHCA_RES_RDB:
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for (dev->qp_table.rdb_shift = 0;
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request->num_qp << dev->qp_table.rdb_shift < profile[i].num;
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++dev->qp_table.rdb_shift)
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; /* nothing */
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dev->qp_table.rdb_base = (u32) profile[i].start;
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init_hca->rdb_base = profile[i].start;
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break;
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case MTHCA_RES_MCG:
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dev->limits.num_mgms = profile[i].num >> 1;
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dev->limits.num_amgms = profile[i].num >> 1;
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init_hca->mc_base = profile[i].start;
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init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
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init_hca->log_mc_table_sz = profile[i].log_num;
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init_hca->mc_hash_sz = 1 << (profile[i].log_num - 1);
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break;
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case MTHCA_RES_MPT:
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dev->limits.num_mpts = profile[i].num;
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dev->mr_table.mpt_base = profile[i].start;
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init_hca->mpt_base = profile[i].start;
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init_hca->log_mpt_sz = profile[i].log_num;
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break;
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case MTHCA_RES_MTT:
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dev->limits.num_mtt_segs = profile[i].num;
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dev->mr_table.mtt_base = profile[i].start;
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init_hca->mtt_base = profile[i].start;
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init_hca->mtt_seg_sz = ffs(dev->limits.mtt_seg_size) - 7;
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break;
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case MTHCA_RES_UAR:
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dev->limits.num_uars = profile[i].num;
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init_hca->uar_scratch_base = profile[i].start;
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break;
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case MTHCA_RES_UDAV:
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dev->av_table.ddr_av_base = profile[i].start;
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dev->av_table.num_ddr_avs = profile[i].num;
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break;
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case MTHCA_RES_UARC:
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dev->uar_table.uarc_size = request->uarc_size;
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dev->uar_table.uarc_base = profile[i].start;
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init_hca->uarc_base = profile[i].start;
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init_hca->log_uarc_sz = ffs(request->uarc_size) - 13;
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init_hca->log_uar_sz = ffs(request->num_uar) - 1;
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break;
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default:
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break;
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}
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}
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/*
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* PDs don't take any HCA memory, but we assign them as part
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* of the HCA profile anyway.
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*/
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dev->limits.num_pds = MTHCA_NUM_PDS;
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if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT &&
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init_hca->log_mpt_sz > 23) {
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mthca_warn(dev, "MPT table too large (requested size 2^%d >= 2^24)\n",
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init_hca->log_mpt_sz);
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mthca_warn(dev, "Disabling memory key throughput optimization.\n");
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dev->mthca_flags &= ~MTHCA_FLAG_SINAI_OPT;
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}
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/*
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* For Tavor, FMRs use ioremapped PCI memory. For 32 bit
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* systems it may use too much vmalloc space to map all MTT
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* memory, so we reserve some MTTs for FMR access, taking them
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* out of the MR pool. They don't use additional memory, but
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* we assign them as part of the HCA profile anyway.
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*/
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if (mthca_is_memfree(dev) || BITS_PER_LONG == 64)
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dev->limits.fmr_reserved_mtts = 0;
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else
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dev->limits.fmr_reserved_mtts = request->fmr_reserved_mtts;
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kfree(profile);
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return total_size;
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}
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