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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_profile.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_profile.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_profile.c b/drivers/infiniband/hw/mthca/mthca_profile.c
new file mode 100644
index 000000000..7ea970774
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_profile.c
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. 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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "mthca_profile.h"
+
+enum {
+ MTHCA_RES_QP,
+ MTHCA_RES_EEC,
+ MTHCA_RES_SRQ,
+ MTHCA_RES_CQ,
+ MTHCA_RES_EQP,
+ MTHCA_RES_EEEC,
+ MTHCA_RES_EQ,
+ MTHCA_RES_RDB,
+ MTHCA_RES_MCG,
+ MTHCA_RES_MPT,
+ MTHCA_RES_MTT,
+ MTHCA_RES_UAR,
+ MTHCA_RES_UDAV,
+ MTHCA_RES_UARC,
+ MTHCA_RES_NUM
+};
+
+enum {
+ MTHCA_NUM_EQS = 32,
+ MTHCA_NUM_PDS = 1 << 15
+};
+
+s64 mthca_make_profile(struct mthca_dev *dev,
+ struct mthca_profile *request,
+ struct mthca_dev_lim *dev_lim,
+ struct mthca_init_hca_param *init_hca)
+{
+ struct mthca_resource {
+ u64 size;
+ u64 start;
+ int type;
+ int num;
+ int log_num;
+ };
+
+ u64 mem_base, mem_avail;
+ s64 total_size = 0;
+ struct mthca_resource *profile;
+ int i, j;
+
+ profile = kcalloc(MTHCA_RES_NUM, sizeof(*profile), GFP_KERNEL);
+ if (!profile)
+ return -ENOMEM;
+
+ profile[MTHCA_RES_QP].size = dev_lim->qpc_entry_sz;
+ profile[MTHCA_RES_EEC].size = dev_lim->eec_entry_sz;
+ profile[MTHCA_RES_SRQ].size = dev_lim->srq_entry_sz;
+ profile[MTHCA_RES_CQ].size = dev_lim->cqc_entry_sz;
+ profile[MTHCA_RES_EQP].size = dev_lim->eqpc_entry_sz;
+ profile[MTHCA_RES_EEEC].size = dev_lim->eeec_entry_sz;
+ profile[MTHCA_RES_EQ].size = dev_lim->eqc_entry_sz;
+ profile[MTHCA_RES_RDB].size = MTHCA_RDB_ENTRY_SIZE;
+ profile[MTHCA_RES_MCG].size = MTHCA_MGM_ENTRY_SIZE;
+ profile[MTHCA_RES_MPT].size = dev_lim->mpt_entry_sz;
+ profile[MTHCA_RES_MTT].size = dev->limits.mtt_seg_size;
+ profile[MTHCA_RES_UAR].size = dev_lim->uar_scratch_entry_sz;
+ profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
+ profile[MTHCA_RES_UARC].size = request->uarc_size;
+
+ profile[MTHCA_RES_QP].num = request->num_qp;
+ profile[MTHCA_RES_SRQ].num = request->num_srq;
+ profile[MTHCA_RES_EQP].num = request->num_qp;
+ profile[MTHCA_RES_RDB].num = request->num_qp * request->rdb_per_qp;
+ profile[MTHCA_RES_CQ].num = request->num_cq;
+ profile[MTHCA_RES_EQ].num = MTHCA_NUM_EQS;
+ profile[MTHCA_RES_MCG].num = request->num_mcg;
+ profile[MTHCA_RES_MPT].num = request->num_mpt;
+ profile[MTHCA_RES_MTT].num = request->num_mtt;
+ profile[MTHCA_RES_UAR].num = request->num_uar;
+ profile[MTHCA_RES_UARC].num = request->num_uar;
+ profile[MTHCA_RES_UDAV].num = request->num_udav;
+
+ for (i = 0; i < MTHCA_RES_NUM; ++i) {
+ profile[i].type = i;
+ profile[i].log_num = max(ffs(profile[i].num) - 1, 0);
+ profile[i].size *= profile[i].num;
+ if (mthca_is_memfree(dev))
+ profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
+ }
+
+ if (mthca_is_memfree(dev)) {
+ mem_base = 0;
+ mem_avail = dev_lim->hca.arbel.max_icm_sz;
+ } else {
+ mem_base = dev->ddr_start;
+ mem_avail = dev->fw.tavor.fw_start - dev->ddr_start;
+ }
+
+ /*
+ * 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 = MTHCA_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 < MTHCA_RES_NUM; ++i) {
+ if (profile[i].size) {
+ profile[i].start = mem_base + total_size;
+ total_size += profile[i].size;
+ }
+ if (total_size > mem_avail) {
+ mthca_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) mem_avail);
+ kfree(profile);
+ return -ENOMEM;
+ }
+
+ if (profile[i].size)
+ mthca_dbg(dev, "profile[%2d]--%2d/%2d @ 0x%16llx "
+ "(size 0x%8llx)\n",
+ i, profile[i].type, profile[i].log_num,
+ (unsigned long long) profile[i].start,
+ (unsigned long long) profile[i].size);
+ }
+
+ if (mthca_is_memfree(dev))
+ mthca_dbg(dev, "HCA context memory: reserving %d KB\n",
+ (int) (total_size >> 10));
+ else
+ mthca_dbg(dev, "HCA memory: allocated %d KB/%d KB (%d KB free)\n",
+ (int) (total_size >> 10), (int) (mem_avail >> 10),
+ (int) ((mem_avail - total_size) >> 10));
+
+ for (i = 0; i < MTHCA_RES_NUM; ++i) {
+ switch (profile[i].type) {
+ case MTHCA_RES_QP:
+ dev->limits.num_qps = profile[i].num;
+ init_hca->qpc_base = profile[i].start;
+ init_hca->log_num_qps = profile[i].log_num;
+ break;
+ case MTHCA_RES_EEC:
+ dev->limits.num_eecs = profile[i].num;
+ init_hca->eec_base = profile[i].start;
+ init_hca->log_num_eecs = profile[i].log_num;
+ break;
+ case MTHCA_RES_SRQ:
+ dev->limits.num_srqs = profile[i].num;
+ init_hca->srqc_base = profile[i].start;
+ init_hca->log_num_srqs = profile[i].log_num;
+ break;
+ case MTHCA_RES_CQ:
+ dev->limits.num_cqs = profile[i].num;
+ init_hca->cqc_base = profile[i].start;
+ init_hca->log_num_cqs = profile[i].log_num;
+ break;
+ case MTHCA_RES_EQP:
+ init_hca->eqpc_base = profile[i].start;
+ break;
+ case MTHCA_RES_EEEC:
+ init_hca->eeec_base = profile[i].start;
+ break;
+ case MTHCA_RES_EQ:
+ dev->limits.num_eqs = profile[i].num;
+ init_hca->eqc_base = profile[i].start;
+ init_hca->log_num_eqs = profile[i].log_num;
+ break;
+ case MTHCA_RES_RDB:
+ for (dev->qp_table.rdb_shift = 0;
+ request->num_qp << dev->qp_table.rdb_shift < profile[i].num;
+ ++dev->qp_table.rdb_shift)
+ ; /* nothing */
+ dev->qp_table.rdb_base = (u32) profile[i].start;
+ init_hca->rdb_base = profile[i].start;
+ break;
+ case MTHCA_RES_MCG:
+ dev->limits.num_mgms = profile[i].num >> 1;
+ dev->limits.num_amgms = profile[i].num >> 1;
+ init_hca->mc_base = profile[i].start;
+ init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
+ init_hca->log_mc_table_sz = profile[i].log_num;
+ init_hca->mc_hash_sz = 1 << (profile[i].log_num - 1);
+ break;
+ case MTHCA_RES_MPT:
+ dev->limits.num_mpts = profile[i].num;
+ dev->mr_table.mpt_base = profile[i].start;
+ init_hca->mpt_base = profile[i].start;
+ init_hca->log_mpt_sz = profile[i].log_num;
+ break;
+ case MTHCA_RES_MTT:
+ dev->limits.num_mtt_segs = profile[i].num;
+ dev->mr_table.mtt_base = profile[i].start;
+ init_hca->mtt_base = profile[i].start;
+ init_hca->mtt_seg_sz = ffs(dev->limits.mtt_seg_size) - 7;
+ break;
+ case MTHCA_RES_UAR:
+ dev->limits.num_uars = profile[i].num;
+ init_hca->uar_scratch_base = profile[i].start;
+ break;
+ case MTHCA_RES_UDAV:
+ dev->av_table.ddr_av_base = profile[i].start;
+ dev->av_table.num_ddr_avs = profile[i].num;
+ break;
+ case MTHCA_RES_UARC:
+ dev->uar_table.uarc_size = request->uarc_size;
+ dev->uar_table.uarc_base = profile[i].start;
+ init_hca->uarc_base = profile[i].start;
+ init_hca->log_uarc_sz = ffs(request->uarc_size) - 13;
+ init_hca->log_uar_sz = ffs(request->num_uar) - 1;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * PDs don't take any HCA memory, but we assign them as part
+ * of the HCA profile anyway.
+ */
+ dev->limits.num_pds = MTHCA_NUM_PDS;
+
+ if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT &&
+ init_hca->log_mpt_sz > 23) {
+ mthca_warn(dev, "MPT table too large (requested size 2^%d >= 2^24)\n",
+ init_hca->log_mpt_sz);
+ mthca_warn(dev, "Disabling memory key throughput optimization.\n");
+ dev->mthca_flags &= ~MTHCA_FLAG_SINAI_OPT;
+ }
+
+ /*
+ * For Tavor, FMRs use ioremapped PCI memory. For 32 bit
+ * systems it may use too much vmalloc space to map all MTT
+ * memory, so we reserve some MTTs for FMR access, taking them
+ * out of the MR pool. They don't use additional memory, but
+ * we assign them as part of the HCA profile anyway.
+ */
+ if (mthca_is_memfree(dev) || BITS_PER_LONG == 64)
+ dev->limits.fmr_reserved_mtts = 0;
+ else
+ dev->limits.fmr_reserved_mtts = request->fmr_reserved_mtts;
+
+ kfree(profile);
+ return total_size;
+}
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