2334 lines
61 KiB
C
2334 lines
61 KiB
C
/*
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* Copyright (c) 2012 Intel Corporation. All rights reserved.
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* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
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* Copyright (c) 2005, 2006 PathScale, Inc. 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 <rdma/ib_mad.h>
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#include <rdma/ib_user_verbs.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/utsname.h>
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#include <linux/rculist.h>
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#include <linux/mm.h>
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#include <linux/random.h>
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#include "qib.h"
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#include "qib_common.h"
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static unsigned int ib_qib_qp_table_size = 256;
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module_param_named(qp_table_size, ib_qib_qp_table_size, uint, S_IRUGO);
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MODULE_PARM_DESC(qp_table_size, "QP table size");
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unsigned int ib_qib_lkey_table_size = 16;
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module_param_named(lkey_table_size, ib_qib_lkey_table_size, uint,
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S_IRUGO);
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MODULE_PARM_DESC(lkey_table_size,
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"LKEY table size in bits (2^n, 1 <= n <= 23)");
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static unsigned int ib_qib_max_pds = 0xFFFF;
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module_param_named(max_pds, ib_qib_max_pds, uint, S_IRUGO);
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MODULE_PARM_DESC(max_pds,
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"Maximum number of protection domains to support");
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static unsigned int ib_qib_max_ahs = 0xFFFF;
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module_param_named(max_ahs, ib_qib_max_ahs, uint, S_IRUGO);
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MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support");
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unsigned int ib_qib_max_cqes = 0x2FFFF;
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module_param_named(max_cqes, ib_qib_max_cqes, uint, S_IRUGO);
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MODULE_PARM_DESC(max_cqes,
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"Maximum number of completion queue entries to support");
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unsigned int ib_qib_max_cqs = 0x1FFFF;
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module_param_named(max_cqs, ib_qib_max_cqs, uint, S_IRUGO);
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MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support");
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unsigned int ib_qib_max_qp_wrs = 0x3FFF;
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module_param_named(max_qp_wrs, ib_qib_max_qp_wrs, uint, S_IRUGO);
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MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support");
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unsigned int ib_qib_max_qps = 16384;
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module_param_named(max_qps, ib_qib_max_qps, uint, S_IRUGO);
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MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support");
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unsigned int ib_qib_max_sges = 0x60;
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module_param_named(max_sges, ib_qib_max_sges, uint, S_IRUGO);
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MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support");
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unsigned int ib_qib_max_mcast_grps = 16384;
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module_param_named(max_mcast_grps, ib_qib_max_mcast_grps, uint, S_IRUGO);
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MODULE_PARM_DESC(max_mcast_grps,
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"Maximum number of multicast groups to support");
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unsigned int ib_qib_max_mcast_qp_attached = 16;
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module_param_named(max_mcast_qp_attached, ib_qib_max_mcast_qp_attached,
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uint, S_IRUGO);
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MODULE_PARM_DESC(max_mcast_qp_attached,
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"Maximum number of attached QPs to support");
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unsigned int ib_qib_max_srqs = 1024;
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module_param_named(max_srqs, ib_qib_max_srqs, uint, S_IRUGO);
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MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support");
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unsigned int ib_qib_max_srq_sges = 128;
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module_param_named(max_srq_sges, ib_qib_max_srq_sges, uint, S_IRUGO);
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MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support");
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unsigned int ib_qib_max_srq_wrs = 0x1FFFF;
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module_param_named(max_srq_wrs, ib_qib_max_srq_wrs, uint, S_IRUGO);
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MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support");
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static unsigned int ib_qib_disable_sma;
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module_param_named(disable_sma, ib_qib_disable_sma, uint, S_IWUSR | S_IRUGO);
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MODULE_PARM_DESC(disable_sma, "Disable the SMA");
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/*
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* Note that it is OK to post send work requests in the SQE and ERR
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* states; qib_do_send() will process them and generate error
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* completions as per IB 1.2 C10-96.
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*/
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const int ib_qib_state_ops[IB_QPS_ERR + 1] = {
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[IB_QPS_RESET] = 0,
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[IB_QPS_INIT] = QIB_POST_RECV_OK,
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[IB_QPS_RTR] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK,
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[IB_QPS_RTS] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK |
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QIB_POST_SEND_OK | QIB_PROCESS_SEND_OK |
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QIB_PROCESS_NEXT_SEND_OK,
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[IB_QPS_SQD] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK |
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QIB_POST_SEND_OK | QIB_PROCESS_SEND_OK,
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[IB_QPS_SQE] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK |
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QIB_POST_SEND_OK | QIB_FLUSH_SEND,
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[IB_QPS_ERR] = QIB_POST_RECV_OK | QIB_FLUSH_RECV |
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QIB_POST_SEND_OK | QIB_FLUSH_SEND,
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};
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struct qib_ucontext {
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struct ib_ucontext ibucontext;
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};
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static inline struct qib_ucontext *to_iucontext(struct ib_ucontext
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*ibucontext)
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{
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return container_of(ibucontext, struct qib_ucontext, ibucontext);
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}
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/*
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* Translate ib_wr_opcode into ib_wc_opcode.
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*/
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const enum ib_wc_opcode ib_qib_wc_opcode[] = {
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[IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE,
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[IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE,
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[IB_WR_SEND] = IB_WC_SEND,
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[IB_WR_SEND_WITH_IMM] = IB_WC_SEND,
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[IB_WR_RDMA_READ] = IB_WC_RDMA_READ,
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[IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP,
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[IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD
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};
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/*
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* System image GUID.
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*/
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__be64 ib_qib_sys_image_guid;
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/**
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* qib_copy_sge - copy data to SGE memory
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* @ss: the SGE state
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* @data: the data to copy
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* @length: the length of the data
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*/
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void qib_copy_sge(struct qib_sge_state *ss, void *data, u32 length, int release)
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{
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struct qib_sge *sge = &ss->sge;
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while (length) {
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u32 len = sge->length;
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if (len > length)
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len = length;
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if (len > sge->sge_length)
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len = sge->sge_length;
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BUG_ON(len == 0);
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memcpy(sge->vaddr, data, len);
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sge->vaddr += len;
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sge->length -= len;
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sge->sge_length -= len;
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if (sge->sge_length == 0) {
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if (release)
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qib_put_mr(sge->mr);
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if (--ss->num_sge)
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*sge = *ss->sg_list++;
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} else if (sge->length == 0 && sge->mr->lkey) {
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if (++sge->n >= QIB_SEGSZ) {
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if (++sge->m >= sge->mr->mapsz)
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break;
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sge->n = 0;
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}
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sge->vaddr =
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sge->mr->map[sge->m]->segs[sge->n].vaddr;
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sge->length =
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sge->mr->map[sge->m]->segs[sge->n].length;
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}
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data += len;
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length -= len;
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}
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}
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/**
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* qib_skip_sge - skip over SGE memory - XXX almost dup of prev func
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* @ss: the SGE state
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* @length: the number of bytes to skip
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*/
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void qib_skip_sge(struct qib_sge_state *ss, u32 length, int release)
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{
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struct qib_sge *sge = &ss->sge;
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while (length) {
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u32 len = sge->length;
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if (len > length)
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len = length;
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if (len > sge->sge_length)
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len = sge->sge_length;
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BUG_ON(len == 0);
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sge->vaddr += len;
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sge->length -= len;
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sge->sge_length -= len;
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if (sge->sge_length == 0) {
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if (release)
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qib_put_mr(sge->mr);
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if (--ss->num_sge)
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*sge = *ss->sg_list++;
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} else if (sge->length == 0 && sge->mr->lkey) {
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if (++sge->n >= QIB_SEGSZ) {
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if (++sge->m >= sge->mr->mapsz)
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break;
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sge->n = 0;
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}
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sge->vaddr =
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sge->mr->map[sge->m]->segs[sge->n].vaddr;
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sge->length =
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sge->mr->map[sge->m]->segs[sge->n].length;
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}
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length -= len;
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}
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}
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/*
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* Count the number of DMA descriptors needed to send length bytes of data.
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* Don't modify the qib_sge_state to get the count.
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* Return zero if any of the segments is not aligned.
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*/
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static u32 qib_count_sge(struct qib_sge_state *ss, u32 length)
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{
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struct qib_sge *sg_list = ss->sg_list;
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struct qib_sge sge = ss->sge;
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u8 num_sge = ss->num_sge;
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u32 ndesc = 1; /* count the header */
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while (length) {
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u32 len = sge.length;
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if (len > length)
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len = length;
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if (len > sge.sge_length)
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len = sge.sge_length;
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BUG_ON(len == 0);
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if (((long) sge.vaddr & (sizeof(u32) - 1)) ||
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(len != length && (len & (sizeof(u32) - 1)))) {
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ndesc = 0;
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break;
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}
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ndesc++;
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sge.vaddr += len;
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sge.length -= len;
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sge.sge_length -= len;
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if (sge.sge_length == 0) {
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if (--num_sge)
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sge = *sg_list++;
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} else if (sge.length == 0 && sge.mr->lkey) {
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if (++sge.n >= QIB_SEGSZ) {
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if (++sge.m >= sge.mr->mapsz)
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break;
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sge.n = 0;
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}
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sge.vaddr =
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sge.mr->map[sge.m]->segs[sge.n].vaddr;
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sge.length =
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sge.mr->map[sge.m]->segs[sge.n].length;
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}
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length -= len;
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}
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return ndesc;
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}
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/*
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* Copy from the SGEs to the data buffer.
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*/
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static void qib_copy_from_sge(void *data, struct qib_sge_state *ss, u32 length)
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{
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struct qib_sge *sge = &ss->sge;
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while (length) {
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u32 len = sge->length;
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if (len > length)
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len = length;
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if (len > sge->sge_length)
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len = sge->sge_length;
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BUG_ON(len == 0);
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memcpy(data, sge->vaddr, len);
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sge->vaddr += len;
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sge->length -= len;
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sge->sge_length -= len;
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if (sge->sge_length == 0) {
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if (--ss->num_sge)
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*sge = *ss->sg_list++;
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} else if (sge->length == 0 && sge->mr->lkey) {
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if (++sge->n >= QIB_SEGSZ) {
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if (++sge->m >= sge->mr->mapsz)
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break;
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sge->n = 0;
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}
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sge->vaddr =
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sge->mr->map[sge->m]->segs[sge->n].vaddr;
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sge->length =
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sge->mr->map[sge->m]->segs[sge->n].length;
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}
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data += len;
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length -= len;
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}
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}
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/**
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* qib_post_one_send - post one RC, UC, or UD send work request
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* @qp: the QP to post on
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* @wr: the work request to send
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*/
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static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr,
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int *scheduled)
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{
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struct qib_swqe *wqe;
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u32 next;
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int i;
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int j;
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int acc;
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int ret;
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unsigned long flags;
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struct qib_lkey_table *rkt;
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struct qib_pd *pd;
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spin_lock_irqsave(&qp->s_lock, flags);
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/* Check that state is OK to post send. */
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if (unlikely(!(ib_qib_state_ops[qp->state] & QIB_POST_SEND_OK)))
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goto bail_inval;
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/* IB spec says that num_sge == 0 is OK. */
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if (wr->num_sge > qp->s_max_sge)
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goto bail_inval;
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/*
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* Don't allow RDMA reads or atomic operations on UC or
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* undefined operations.
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* Make sure buffer is large enough to hold the result for atomics.
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*/
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if (wr->opcode == IB_WR_FAST_REG_MR) {
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if (qib_fast_reg_mr(qp, wr))
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goto bail_inval;
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} else if (qp->ibqp.qp_type == IB_QPT_UC) {
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if ((unsigned) wr->opcode >= IB_WR_RDMA_READ)
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goto bail_inval;
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} else if (qp->ibqp.qp_type != IB_QPT_RC) {
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/* Check IB_QPT_SMI, IB_QPT_GSI, IB_QPT_UD opcode */
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if (wr->opcode != IB_WR_SEND &&
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wr->opcode != IB_WR_SEND_WITH_IMM)
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goto bail_inval;
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/* Check UD destination address PD */
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if (qp->ibqp.pd != wr->wr.ud.ah->pd)
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goto bail_inval;
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} else if ((unsigned) wr->opcode > IB_WR_ATOMIC_FETCH_AND_ADD)
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goto bail_inval;
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else if (wr->opcode >= IB_WR_ATOMIC_CMP_AND_SWP &&
|
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(wr->num_sge == 0 ||
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wr->sg_list[0].length < sizeof(u64) ||
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wr->sg_list[0].addr & (sizeof(u64) - 1)))
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goto bail_inval;
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else if (wr->opcode >= IB_WR_RDMA_READ && !qp->s_max_rd_atomic)
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goto bail_inval;
|
|
|
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next = qp->s_head + 1;
|
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if (next >= qp->s_size)
|
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next = 0;
|
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if (next == qp->s_last) {
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ret = -ENOMEM;
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goto bail;
|
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}
|
|
|
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rkt = &to_idev(qp->ibqp.device)->lk_table;
|
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pd = to_ipd(qp->ibqp.pd);
|
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wqe = get_swqe_ptr(qp, qp->s_head);
|
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wqe->wr = *wr;
|
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wqe->length = 0;
|
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j = 0;
|
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if (wr->num_sge) {
|
|
acc = wr->opcode >= IB_WR_RDMA_READ ?
|
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IB_ACCESS_LOCAL_WRITE : 0;
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
u32 length = wr->sg_list[i].length;
|
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int ok;
|
|
|
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if (length == 0)
|
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continue;
|
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ok = qib_lkey_ok(rkt, pd, &wqe->sg_list[j],
|
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&wr->sg_list[i], acc);
|
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if (!ok)
|
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goto bail_inval_free;
|
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wqe->length += length;
|
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j++;
|
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}
|
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wqe->wr.num_sge = j;
|
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}
|
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if (qp->ibqp.qp_type == IB_QPT_UC ||
|
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qp->ibqp.qp_type == IB_QPT_RC) {
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if (wqe->length > 0x80000000U)
|
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goto bail_inval_free;
|
|
} else if (wqe->length > (dd_from_ibdev(qp->ibqp.device)->pport +
|
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qp->port_num - 1)->ibmtu)
|
|
goto bail_inval_free;
|
|
else
|
|
atomic_inc(&to_iah(wr->wr.ud.ah)->refcount);
|
|
wqe->ssn = qp->s_ssn++;
|
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qp->s_head = next;
|
|
|
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ret = 0;
|
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goto bail;
|
|
|
|
bail_inval_free:
|
|
while (j) {
|
|
struct qib_sge *sge = &wqe->sg_list[--j];
|
|
|
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qib_put_mr(sge->mr);
|
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}
|
|
bail_inval:
|
|
ret = -EINVAL;
|
|
bail:
|
|
if (!ret && !wr->next &&
|
|
!qib_sdma_empty(
|
|
dd_from_ibdev(qp->ibqp.device)->pport + qp->port_num - 1)) {
|
|
qib_schedule_send(qp);
|
|
*scheduled = 1;
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qib_post_send - post a send on a QP
|
|
* @ibqp: the QP to post the send on
|
|
* @wr: the list of work requests to post
|
|
* @bad_wr: the first bad WR is put here
|
|
*
|
|
* This may be called from interrupt context.
|
|
*/
|
|
static int qib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
struct qib_qp *qp = to_iqp(ibqp);
|
|
int err = 0;
|
|
int scheduled = 0;
|
|
|
|
for (; wr; wr = wr->next) {
|
|
err = qib_post_one_send(qp, wr, &scheduled);
|
|
if (err) {
|
|
*bad_wr = wr;
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
/* Try to do the send work in the caller's context. */
|
|
if (!scheduled)
|
|
qib_do_send(&qp->s_work);
|
|
|
|
bail:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* qib_post_receive - post a receive on a QP
|
|
* @ibqp: the QP to post the receive on
|
|
* @wr: the WR to post
|
|
* @bad_wr: the first bad WR is put here
|
|
*
|
|
* This may be called from interrupt context.
|
|
*/
|
|
static int qib_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
struct qib_qp *qp = to_iqp(ibqp);
|
|
struct qib_rwq *wq = qp->r_rq.wq;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
/* Check that state is OK to post receive. */
|
|
if (!(ib_qib_state_ops[qp->state] & QIB_POST_RECV_OK) || !wq) {
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
for (; wr; wr = wr->next) {
|
|
struct qib_rwqe *wqe;
|
|
u32 next;
|
|
int i;
|
|
|
|
if ((unsigned) wr->num_sge > qp->r_rq.max_sge) {
|
|
*bad_wr = wr;
|
|
ret = -EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
spin_lock_irqsave(&qp->r_rq.lock, flags);
|
|
next = wq->head + 1;
|
|
if (next >= qp->r_rq.size)
|
|
next = 0;
|
|
if (next == wq->tail) {
|
|
spin_unlock_irqrestore(&qp->r_rq.lock, flags);
|
|
*bad_wr = wr;
|
|
ret = -ENOMEM;
|
|
goto bail;
|
|
}
|
|
|
|
wqe = get_rwqe_ptr(&qp->r_rq, wq->head);
|
|
wqe->wr_id = wr->wr_id;
|
|
wqe->num_sge = wr->num_sge;
|
|
for (i = 0; i < wr->num_sge; i++)
|
|
wqe->sg_list[i] = wr->sg_list[i];
|
|
/* Make sure queue entry is written before the head index. */
|
|
smp_wmb();
|
|
wq->head = next;
|
|
spin_unlock_irqrestore(&qp->r_rq.lock, flags);
|
|
}
|
|
ret = 0;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qib_qp_rcv - processing an incoming packet on a QP
|
|
* @rcd: the context pointer
|
|
* @hdr: the packet header
|
|
* @has_grh: true if the packet has a GRH
|
|
* @data: the packet data
|
|
* @tlen: the packet length
|
|
* @qp: the QP the packet came on
|
|
*
|
|
* This is called from qib_ib_rcv() to process an incoming packet
|
|
* for the given QP.
|
|
* Called at interrupt level.
|
|
*/
|
|
static void qib_qp_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr,
|
|
int has_grh, void *data, u32 tlen, struct qib_qp *qp)
|
|
{
|
|
struct qib_ibport *ibp = &rcd->ppd->ibport_data;
|
|
|
|
spin_lock(&qp->r_lock);
|
|
|
|
/* Check for valid receive state. */
|
|
if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) {
|
|
ibp->n_pkt_drops++;
|
|
goto unlock;
|
|
}
|
|
|
|
switch (qp->ibqp.qp_type) {
|
|
case IB_QPT_SMI:
|
|
case IB_QPT_GSI:
|
|
if (ib_qib_disable_sma)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
case IB_QPT_UD:
|
|
qib_ud_rcv(ibp, hdr, has_grh, data, tlen, qp);
|
|
break;
|
|
|
|
case IB_QPT_RC:
|
|
qib_rc_rcv(rcd, hdr, has_grh, data, tlen, qp);
|
|
break;
|
|
|
|
case IB_QPT_UC:
|
|
qib_uc_rcv(ibp, hdr, has_grh, data, tlen, qp);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
unlock:
|
|
spin_unlock(&qp->r_lock);
|
|
}
|
|
|
|
/**
|
|
* qib_ib_rcv - process an incoming packet
|
|
* @rcd: the context pointer
|
|
* @rhdr: the header of the packet
|
|
* @data: the packet payload
|
|
* @tlen: the packet length
|
|
*
|
|
* This is called from qib_kreceive() to process an incoming packet at
|
|
* interrupt level. Tlen is the length of the header + data + CRC in bytes.
|
|
*/
|
|
void qib_ib_rcv(struct qib_ctxtdata *rcd, void *rhdr, void *data, u32 tlen)
|
|
{
|
|
struct qib_pportdata *ppd = rcd->ppd;
|
|
struct qib_ibport *ibp = &ppd->ibport_data;
|
|
struct qib_ib_header *hdr = rhdr;
|
|
struct qib_other_headers *ohdr;
|
|
struct qib_qp *qp;
|
|
u32 qp_num;
|
|
int lnh;
|
|
u8 opcode;
|
|
u16 lid;
|
|
|
|
/* 24 == LRH+BTH+CRC */
|
|
if (unlikely(tlen < 24))
|
|
goto drop;
|
|
|
|
/* Check for a valid destination LID (see ch. 7.11.1). */
|
|
lid = be16_to_cpu(hdr->lrh[1]);
|
|
if (lid < QIB_MULTICAST_LID_BASE) {
|
|
lid &= ~((1 << ppd->lmc) - 1);
|
|
if (unlikely(lid != ppd->lid))
|
|
goto drop;
|
|
}
|
|
|
|
/* Check for GRH */
|
|
lnh = be16_to_cpu(hdr->lrh[0]) & 3;
|
|
if (lnh == QIB_LRH_BTH)
|
|
ohdr = &hdr->u.oth;
|
|
else if (lnh == QIB_LRH_GRH) {
|
|
u32 vtf;
|
|
|
|
ohdr = &hdr->u.l.oth;
|
|
if (hdr->u.l.grh.next_hdr != IB_GRH_NEXT_HDR)
|
|
goto drop;
|
|
vtf = be32_to_cpu(hdr->u.l.grh.version_tclass_flow);
|
|
if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION)
|
|
goto drop;
|
|
} else
|
|
goto drop;
|
|
|
|
opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
|
|
ibp->opstats[opcode & 0x7f].n_bytes += tlen;
|
|
ibp->opstats[opcode & 0x7f].n_packets++;
|
|
|
|
/* Get the destination QP number. */
|
|
qp_num = be32_to_cpu(ohdr->bth[1]) & QIB_QPN_MASK;
|
|
if (qp_num == QIB_MULTICAST_QPN) {
|
|
struct qib_mcast *mcast;
|
|
struct qib_mcast_qp *p;
|
|
|
|
if (lnh != QIB_LRH_GRH)
|
|
goto drop;
|
|
mcast = qib_mcast_find(ibp, &hdr->u.l.grh.dgid);
|
|
if (mcast == NULL)
|
|
goto drop;
|
|
ibp->n_multicast_rcv++;
|
|
list_for_each_entry_rcu(p, &mcast->qp_list, list)
|
|
qib_qp_rcv(rcd, hdr, 1, data, tlen, p->qp);
|
|
/*
|
|
* Notify qib_multicast_detach() if it is waiting for us
|
|
* to finish.
|
|
*/
|
|
if (atomic_dec_return(&mcast->refcount) <= 1)
|
|
wake_up(&mcast->wait);
|
|
} else {
|
|
if (rcd->lookaside_qp) {
|
|
if (rcd->lookaside_qpn != qp_num) {
|
|
if (atomic_dec_and_test(
|
|
&rcd->lookaside_qp->refcount))
|
|
wake_up(
|
|
&rcd->lookaside_qp->wait);
|
|
rcd->lookaside_qp = NULL;
|
|
}
|
|
}
|
|
if (!rcd->lookaside_qp) {
|
|
qp = qib_lookup_qpn(ibp, qp_num);
|
|
if (!qp)
|
|
goto drop;
|
|
rcd->lookaside_qp = qp;
|
|
rcd->lookaside_qpn = qp_num;
|
|
} else
|
|
qp = rcd->lookaside_qp;
|
|
ibp->n_unicast_rcv++;
|
|
qib_qp_rcv(rcd, hdr, lnh == QIB_LRH_GRH, data, tlen, qp);
|
|
}
|
|
return;
|
|
|
|
drop:
|
|
ibp->n_pkt_drops++;
|
|
}
|
|
|
|
/*
|
|
* This is called from a timer to check for QPs
|
|
* which need kernel memory in order to send a packet.
|
|
*/
|
|
static void mem_timer(unsigned long data)
|
|
{
|
|
struct qib_ibdev *dev = (struct qib_ibdev *) data;
|
|
struct list_head *list = &dev->memwait;
|
|
struct qib_qp *qp = NULL;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->pending_lock, flags);
|
|
if (!list_empty(list)) {
|
|
qp = list_entry(list->next, struct qib_qp, iowait);
|
|
list_del_init(&qp->iowait);
|
|
atomic_inc(&qp->refcount);
|
|
if (!list_empty(list))
|
|
mod_timer(&dev->mem_timer, jiffies + 1);
|
|
}
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
|
|
if (qp) {
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
if (qp->s_flags & QIB_S_WAIT_KMEM) {
|
|
qp->s_flags &= ~QIB_S_WAIT_KMEM;
|
|
qib_schedule_send(qp);
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
if (atomic_dec_and_test(&qp->refcount))
|
|
wake_up(&qp->wait);
|
|
}
|
|
}
|
|
|
|
static void update_sge(struct qib_sge_state *ss, u32 length)
|
|
{
|
|
struct qib_sge *sge = &ss->sge;
|
|
|
|
sge->vaddr += length;
|
|
sge->length -= length;
|
|
sge->sge_length -= length;
|
|
if (sge->sge_length == 0) {
|
|
if (--ss->num_sge)
|
|
*sge = *ss->sg_list++;
|
|
} else if (sge->length == 0 && sge->mr->lkey) {
|
|
if (++sge->n >= QIB_SEGSZ) {
|
|
if (++sge->m >= sge->mr->mapsz)
|
|
return;
|
|
sge->n = 0;
|
|
}
|
|
sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr;
|
|
sge->length = sge->mr->map[sge->m]->segs[sge->n].length;
|
|
}
|
|
}
|
|
|
|
#ifdef __LITTLE_ENDIAN
|
|
static inline u32 get_upper_bits(u32 data, u32 shift)
|
|
{
|
|
return data >> shift;
|
|
}
|
|
|
|
static inline u32 set_upper_bits(u32 data, u32 shift)
|
|
{
|
|
return data << shift;
|
|
}
|
|
|
|
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
|
|
{
|
|
data <<= ((sizeof(u32) - n) * BITS_PER_BYTE);
|
|
data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
|
|
return data;
|
|
}
|
|
#else
|
|
static inline u32 get_upper_bits(u32 data, u32 shift)
|
|
{
|
|
return data << shift;
|
|
}
|
|
|
|
static inline u32 set_upper_bits(u32 data, u32 shift)
|
|
{
|
|
return data >> shift;
|
|
}
|
|
|
|
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
|
|
{
|
|
data >>= ((sizeof(u32) - n) * BITS_PER_BYTE);
|
|
data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
|
|
return data;
|
|
}
|
|
#endif
|
|
|
|
static void copy_io(u32 __iomem *piobuf, struct qib_sge_state *ss,
|
|
u32 length, unsigned flush_wc)
|
|
{
|
|
u32 extra = 0;
|
|
u32 data = 0;
|
|
u32 last;
|
|
|
|
while (1) {
|
|
u32 len = ss->sge.length;
|
|
u32 off;
|
|
|
|
if (len > length)
|
|
len = length;
|
|
if (len > ss->sge.sge_length)
|
|
len = ss->sge.sge_length;
|
|
BUG_ON(len == 0);
|
|
/* If the source address is not aligned, try to align it. */
|
|
off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1);
|
|
if (off) {
|
|
u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr &
|
|
~(sizeof(u32) - 1));
|
|
u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE);
|
|
u32 y;
|
|
|
|
y = sizeof(u32) - off;
|
|
if (len > y)
|
|
len = y;
|
|
if (len + extra >= sizeof(u32)) {
|
|
data |= set_upper_bits(v, extra *
|
|
BITS_PER_BYTE);
|
|
len = sizeof(u32) - extra;
|
|
if (len == length) {
|
|
last = data;
|
|
break;
|
|
}
|
|
__raw_writel(data, piobuf);
|
|
piobuf++;
|
|
extra = 0;
|
|
data = 0;
|
|
} else {
|
|
/* Clear unused upper bytes */
|
|
data |= clear_upper_bytes(v, len, extra);
|
|
if (len == length) {
|
|
last = data;
|
|
break;
|
|
}
|
|
extra += len;
|
|
}
|
|
} else if (extra) {
|
|
/* Source address is aligned. */
|
|
u32 *addr = (u32 *) ss->sge.vaddr;
|
|
int shift = extra * BITS_PER_BYTE;
|
|
int ushift = 32 - shift;
|
|
u32 l = len;
|
|
|
|
while (l >= sizeof(u32)) {
|
|
u32 v = *addr;
|
|
|
|
data |= set_upper_bits(v, shift);
|
|
__raw_writel(data, piobuf);
|
|
data = get_upper_bits(v, ushift);
|
|
piobuf++;
|
|
addr++;
|
|
l -= sizeof(u32);
|
|
}
|
|
/*
|
|
* We still have 'extra' number of bytes leftover.
|
|
*/
|
|
if (l) {
|
|
u32 v = *addr;
|
|
|
|
if (l + extra >= sizeof(u32)) {
|
|
data |= set_upper_bits(v, shift);
|
|
len -= l + extra - sizeof(u32);
|
|
if (len == length) {
|
|
last = data;
|
|
break;
|
|
}
|
|
__raw_writel(data, piobuf);
|
|
piobuf++;
|
|
extra = 0;
|
|
data = 0;
|
|
} else {
|
|
/* Clear unused upper bytes */
|
|
data |= clear_upper_bytes(v, l, extra);
|
|
if (len == length) {
|
|
last = data;
|
|
break;
|
|
}
|
|
extra += l;
|
|
}
|
|
} else if (len == length) {
|
|
last = data;
|
|
break;
|
|
}
|
|
} else if (len == length) {
|
|
u32 w;
|
|
|
|
/*
|
|
* Need to round up for the last dword in the
|
|
* packet.
|
|
*/
|
|
w = (len + 3) >> 2;
|
|
qib_pio_copy(piobuf, ss->sge.vaddr, w - 1);
|
|
piobuf += w - 1;
|
|
last = ((u32 *) ss->sge.vaddr)[w - 1];
|
|
break;
|
|
} else {
|
|
u32 w = len >> 2;
|
|
|
|
qib_pio_copy(piobuf, ss->sge.vaddr, w);
|
|
piobuf += w;
|
|
|
|
extra = len & (sizeof(u32) - 1);
|
|
if (extra) {
|
|
u32 v = ((u32 *) ss->sge.vaddr)[w];
|
|
|
|
/* Clear unused upper bytes */
|
|
data = clear_upper_bytes(v, extra, 0);
|
|
}
|
|
}
|
|
update_sge(ss, len);
|
|
length -= len;
|
|
}
|
|
/* Update address before sending packet. */
|
|
update_sge(ss, length);
|
|
if (flush_wc) {
|
|
/* must flush early everything before trigger word */
|
|
qib_flush_wc();
|
|
__raw_writel(last, piobuf);
|
|
/* be sure trigger word is written */
|
|
qib_flush_wc();
|
|
} else
|
|
__raw_writel(last, piobuf);
|
|
}
|
|
|
|
static noinline struct qib_verbs_txreq *__get_txreq(struct qib_ibdev *dev,
|
|
struct qib_qp *qp)
|
|
{
|
|
struct qib_verbs_txreq *tx;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
spin_lock(&dev->pending_lock);
|
|
|
|
if (!list_empty(&dev->txreq_free)) {
|
|
struct list_head *l = dev->txreq_free.next;
|
|
|
|
list_del(l);
|
|
spin_unlock(&dev->pending_lock);
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
|
|
} else {
|
|
if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK &&
|
|
list_empty(&qp->iowait)) {
|
|
dev->n_txwait++;
|
|
qp->s_flags |= QIB_S_WAIT_TX;
|
|
list_add_tail(&qp->iowait, &dev->txwait);
|
|
}
|
|
qp->s_flags &= ~QIB_S_BUSY;
|
|
spin_unlock(&dev->pending_lock);
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
tx = ERR_PTR(-EBUSY);
|
|
}
|
|
return tx;
|
|
}
|
|
|
|
static inline struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev,
|
|
struct qib_qp *qp)
|
|
{
|
|
struct qib_verbs_txreq *tx;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->pending_lock, flags);
|
|
/* assume the list non empty */
|
|
if (likely(!list_empty(&dev->txreq_free))) {
|
|
struct list_head *l = dev->txreq_free.next;
|
|
|
|
list_del(l);
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
|
|
} else {
|
|
/* call slow path to get the extra lock */
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
tx = __get_txreq(dev, qp);
|
|
}
|
|
return tx;
|
|
}
|
|
|
|
void qib_put_txreq(struct qib_verbs_txreq *tx)
|
|
{
|
|
struct qib_ibdev *dev;
|
|
struct qib_qp *qp;
|
|
unsigned long flags;
|
|
|
|
qp = tx->qp;
|
|
dev = to_idev(qp->ibqp.device);
|
|
|
|
if (atomic_dec_and_test(&qp->refcount))
|
|
wake_up(&qp->wait);
|
|
if (tx->mr) {
|
|
qib_put_mr(tx->mr);
|
|
tx->mr = NULL;
|
|
}
|
|
if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF) {
|
|
tx->txreq.flags &= ~QIB_SDMA_TXREQ_F_FREEBUF;
|
|
dma_unmap_single(&dd_from_dev(dev)->pcidev->dev,
|
|
tx->txreq.addr, tx->hdr_dwords << 2,
|
|
DMA_TO_DEVICE);
|
|
kfree(tx->align_buf);
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->pending_lock, flags);
|
|
|
|
/* Put struct back on free list */
|
|
list_add(&tx->txreq.list, &dev->txreq_free);
|
|
|
|
if (!list_empty(&dev->txwait)) {
|
|
/* Wake up first QP wanting a free struct */
|
|
qp = list_entry(dev->txwait.next, struct qib_qp, iowait);
|
|
list_del_init(&qp->iowait);
|
|
atomic_inc(&qp->refcount);
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
if (qp->s_flags & QIB_S_WAIT_TX) {
|
|
qp->s_flags &= ~QIB_S_WAIT_TX;
|
|
qib_schedule_send(qp);
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
|
|
if (atomic_dec_and_test(&qp->refcount))
|
|
wake_up(&qp->wait);
|
|
} else
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* This is called when there are send DMA descriptors that might be
|
|
* available.
|
|
*
|
|
* This is called with ppd->sdma_lock held.
|
|
*/
|
|
void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail)
|
|
{
|
|
struct qib_qp *qp, *nqp;
|
|
struct qib_qp *qps[20];
|
|
struct qib_ibdev *dev;
|
|
unsigned i, n;
|
|
|
|
n = 0;
|
|
dev = &ppd->dd->verbs_dev;
|
|
spin_lock(&dev->pending_lock);
|
|
|
|
/* Search wait list for first QP wanting DMA descriptors. */
|
|
list_for_each_entry_safe(qp, nqp, &dev->dmawait, iowait) {
|
|
if (qp->port_num != ppd->port)
|
|
continue;
|
|
if (n == ARRAY_SIZE(qps))
|
|
break;
|
|
if (qp->s_tx->txreq.sg_count > avail)
|
|
break;
|
|
avail -= qp->s_tx->txreq.sg_count;
|
|
list_del_init(&qp->iowait);
|
|
atomic_inc(&qp->refcount);
|
|
qps[n++] = qp;
|
|
}
|
|
|
|
spin_unlock(&dev->pending_lock);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
qp = qps[i];
|
|
spin_lock(&qp->s_lock);
|
|
if (qp->s_flags & QIB_S_WAIT_DMA_DESC) {
|
|
qp->s_flags &= ~QIB_S_WAIT_DMA_DESC;
|
|
qib_schedule_send(qp);
|
|
}
|
|
spin_unlock(&qp->s_lock);
|
|
if (atomic_dec_and_test(&qp->refcount))
|
|
wake_up(&qp->wait);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This is called with ppd->sdma_lock held.
|
|
*/
|
|
static void sdma_complete(struct qib_sdma_txreq *cookie, int status)
|
|
{
|
|
struct qib_verbs_txreq *tx =
|
|
container_of(cookie, struct qib_verbs_txreq, txreq);
|
|
struct qib_qp *qp = tx->qp;
|
|
|
|
spin_lock(&qp->s_lock);
|
|
if (tx->wqe)
|
|
qib_send_complete(qp, tx->wqe, IB_WC_SUCCESS);
|
|
else if (qp->ibqp.qp_type == IB_QPT_RC) {
|
|
struct qib_ib_header *hdr;
|
|
|
|
if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF)
|
|
hdr = &tx->align_buf->hdr;
|
|
else {
|
|
struct qib_ibdev *dev = to_idev(qp->ibqp.device);
|
|
|
|
hdr = &dev->pio_hdrs[tx->hdr_inx].hdr;
|
|
}
|
|
qib_rc_send_complete(qp, hdr);
|
|
}
|
|
if (atomic_dec_and_test(&qp->s_dma_busy)) {
|
|
if (qp->state == IB_QPS_RESET)
|
|
wake_up(&qp->wait_dma);
|
|
else if (qp->s_flags & QIB_S_WAIT_DMA) {
|
|
qp->s_flags &= ~QIB_S_WAIT_DMA;
|
|
qib_schedule_send(qp);
|
|
}
|
|
}
|
|
spin_unlock(&qp->s_lock);
|
|
|
|
qib_put_txreq(tx);
|
|
}
|
|
|
|
static int wait_kmem(struct qib_ibdev *dev, struct qib_qp *qp)
|
|
{
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK) {
|
|
spin_lock(&dev->pending_lock);
|
|
if (list_empty(&qp->iowait)) {
|
|
if (list_empty(&dev->memwait))
|
|
mod_timer(&dev->mem_timer, jiffies + 1);
|
|
qp->s_flags |= QIB_S_WAIT_KMEM;
|
|
list_add_tail(&qp->iowait, &dev->memwait);
|
|
}
|
|
spin_unlock(&dev->pending_lock);
|
|
qp->s_flags &= ~QIB_S_BUSY;
|
|
ret = -EBUSY;
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int qib_verbs_send_dma(struct qib_qp *qp, struct qib_ib_header *hdr,
|
|
u32 hdrwords, struct qib_sge_state *ss, u32 len,
|
|
u32 plen, u32 dwords)
|
|
{
|
|
struct qib_ibdev *dev = to_idev(qp->ibqp.device);
|
|
struct qib_devdata *dd = dd_from_dev(dev);
|
|
struct qib_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
struct qib_verbs_txreq *tx;
|
|
struct qib_pio_header *phdr;
|
|
u32 control;
|
|
u32 ndesc;
|
|
int ret;
|
|
|
|
tx = qp->s_tx;
|
|
if (tx) {
|
|
qp->s_tx = NULL;
|
|
/* resend previously constructed packet */
|
|
ret = qib_sdma_verbs_send(ppd, tx->ss, tx->dwords, tx);
|
|
goto bail;
|
|
}
|
|
|
|
tx = get_txreq(dev, qp);
|
|
if (IS_ERR(tx))
|
|
goto bail_tx;
|
|
|
|
control = dd->f_setpbc_control(ppd, plen, qp->s_srate,
|
|
be16_to_cpu(hdr->lrh[0]) >> 12);
|
|
tx->qp = qp;
|
|
atomic_inc(&qp->refcount);
|
|
tx->wqe = qp->s_wqe;
|
|
tx->mr = qp->s_rdma_mr;
|
|
if (qp->s_rdma_mr)
|
|
qp->s_rdma_mr = NULL;
|
|
tx->txreq.callback = sdma_complete;
|
|
if (dd->flags & QIB_HAS_SDMA_TIMEOUT)
|
|
tx->txreq.flags = QIB_SDMA_TXREQ_F_HEADTOHOST;
|
|
else
|
|
tx->txreq.flags = QIB_SDMA_TXREQ_F_INTREQ;
|
|
if (plen + 1 > dd->piosize2kmax_dwords)
|
|
tx->txreq.flags |= QIB_SDMA_TXREQ_F_USELARGEBUF;
|
|
|
|
if (len) {
|
|
/*
|
|
* Don't try to DMA if it takes more descriptors than
|
|
* the queue holds.
|
|
*/
|
|
ndesc = qib_count_sge(ss, len);
|
|
if (ndesc >= ppd->sdma_descq_cnt)
|
|
ndesc = 0;
|
|
} else
|
|
ndesc = 1;
|
|
if (ndesc) {
|
|
phdr = &dev->pio_hdrs[tx->hdr_inx];
|
|
phdr->pbc[0] = cpu_to_le32(plen);
|
|
phdr->pbc[1] = cpu_to_le32(control);
|
|
memcpy(&phdr->hdr, hdr, hdrwords << 2);
|
|
tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEDESC;
|
|
tx->txreq.sg_count = ndesc;
|
|
tx->txreq.addr = dev->pio_hdrs_phys +
|
|
tx->hdr_inx * sizeof(struct qib_pio_header);
|
|
tx->hdr_dwords = hdrwords + 2; /* add PBC length */
|
|
ret = qib_sdma_verbs_send(ppd, ss, dwords, tx);
|
|
goto bail;
|
|
}
|
|
|
|
/* Allocate a buffer and copy the header and payload to it. */
|
|
tx->hdr_dwords = plen + 1;
|
|
phdr = kmalloc(tx->hdr_dwords << 2, GFP_ATOMIC);
|
|
if (!phdr)
|
|
goto err_tx;
|
|
phdr->pbc[0] = cpu_to_le32(plen);
|
|
phdr->pbc[1] = cpu_to_le32(control);
|
|
memcpy(&phdr->hdr, hdr, hdrwords << 2);
|
|
qib_copy_from_sge((u32 *) &phdr->hdr + hdrwords, ss, len);
|
|
|
|
tx->txreq.addr = dma_map_single(&dd->pcidev->dev, phdr,
|
|
tx->hdr_dwords << 2, DMA_TO_DEVICE);
|
|
if (dma_mapping_error(&dd->pcidev->dev, tx->txreq.addr))
|
|
goto map_err;
|
|
tx->align_buf = phdr;
|
|
tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEBUF;
|
|
tx->txreq.sg_count = 1;
|
|
ret = qib_sdma_verbs_send(ppd, NULL, 0, tx);
|
|
goto unaligned;
|
|
|
|
map_err:
|
|
kfree(phdr);
|
|
err_tx:
|
|
qib_put_txreq(tx);
|
|
ret = wait_kmem(dev, qp);
|
|
unaligned:
|
|
ibp->n_unaligned++;
|
|
bail:
|
|
return ret;
|
|
bail_tx:
|
|
ret = PTR_ERR(tx);
|
|
goto bail;
|
|
}
|
|
|
|
/*
|
|
* If we are now in the error state, return zero to flush the
|
|
* send work request.
|
|
*/
|
|
static int no_bufs_available(struct qib_qp *qp)
|
|
{
|
|
struct qib_ibdev *dev = to_idev(qp->ibqp.device);
|
|
struct qib_devdata *dd;
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* Note that as soon as want_buffer() is called and
|
|
* possibly before it returns, qib_ib_piobufavail()
|
|
* could be called. Therefore, put QP on the I/O wait list before
|
|
* enabling the PIO avail interrupt.
|
|
*/
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK) {
|
|
spin_lock(&dev->pending_lock);
|
|
if (list_empty(&qp->iowait)) {
|
|
dev->n_piowait++;
|
|
qp->s_flags |= QIB_S_WAIT_PIO;
|
|
list_add_tail(&qp->iowait, &dev->piowait);
|
|
dd = dd_from_dev(dev);
|
|
dd->f_wantpiobuf_intr(dd, 1);
|
|
}
|
|
spin_unlock(&dev->pending_lock);
|
|
qp->s_flags &= ~QIB_S_BUSY;
|
|
ret = -EBUSY;
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
static int qib_verbs_send_pio(struct qib_qp *qp, struct qib_ib_header *ibhdr,
|
|
u32 hdrwords, struct qib_sge_state *ss, u32 len,
|
|
u32 plen, u32 dwords)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device);
|
|
struct qib_pportdata *ppd = dd->pport + qp->port_num - 1;
|
|
u32 *hdr = (u32 *) ibhdr;
|
|
u32 __iomem *piobuf_orig;
|
|
u32 __iomem *piobuf;
|
|
u64 pbc;
|
|
unsigned long flags;
|
|
unsigned flush_wc;
|
|
u32 control;
|
|
u32 pbufn;
|
|
|
|
control = dd->f_setpbc_control(ppd, plen, qp->s_srate,
|
|
be16_to_cpu(ibhdr->lrh[0]) >> 12);
|
|
pbc = ((u64) control << 32) | plen;
|
|
piobuf = dd->f_getsendbuf(ppd, pbc, &pbufn);
|
|
if (unlikely(piobuf == NULL))
|
|
return no_bufs_available(qp);
|
|
|
|
/*
|
|
* Write the pbc.
|
|
* We have to flush after the PBC for correctness on some cpus
|
|
* or WC buffer can be written out of order.
|
|
*/
|
|
writeq(pbc, piobuf);
|
|
piobuf_orig = piobuf;
|
|
piobuf += 2;
|
|
|
|
flush_wc = dd->flags & QIB_PIO_FLUSH_WC;
|
|
if (len == 0) {
|
|
/*
|
|
* If there is just the header portion, must flush before
|
|
* writing last word of header for correctness, and after
|
|
* the last header word (trigger word).
|
|
*/
|
|
if (flush_wc) {
|
|
qib_flush_wc();
|
|
qib_pio_copy(piobuf, hdr, hdrwords - 1);
|
|
qib_flush_wc();
|
|
__raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1);
|
|
qib_flush_wc();
|
|
} else
|
|
qib_pio_copy(piobuf, hdr, hdrwords);
|
|
goto done;
|
|
}
|
|
|
|
if (flush_wc)
|
|
qib_flush_wc();
|
|
qib_pio_copy(piobuf, hdr, hdrwords);
|
|
piobuf += hdrwords;
|
|
|
|
/* The common case is aligned and contained in one segment. */
|
|
if (likely(ss->num_sge == 1 && len <= ss->sge.length &&
|
|
!((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) {
|
|
u32 *addr = (u32 *) ss->sge.vaddr;
|
|
|
|
/* Update address before sending packet. */
|
|
update_sge(ss, len);
|
|
if (flush_wc) {
|
|
qib_pio_copy(piobuf, addr, dwords - 1);
|
|
/* must flush early everything before trigger word */
|
|
qib_flush_wc();
|
|
__raw_writel(addr[dwords - 1], piobuf + dwords - 1);
|
|
/* be sure trigger word is written */
|
|
qib_flush_wc();
|
|
} else
|
|
qib_pio_copy(piobuf, addr, dwords);
|
|
goto done;
|
|
}
|
|
copy_io(piobuf, ss, len, flush_wc);
|
|
done:
|
|
if (dd->flags & QIB_USE_SPCL_TRIG) {
|
|
u32 spcl_off = (pbufn >= dd->piobcnt2k) ? 2047 : 1023;
|
|
qib_flush_wc();
|
|
__raw_writel(0xaebecede, piobuf_orig + spcl_off);
|
|
}
|
|
qib_sendbuf_done(dd, pbufn);
|
|
if (qp->s_rdma_mr) {
|
|
qib_put_mr(qp->s_rdma_mr);
|
|
qp->s_rdma_mr = NULL;
|
|
}
|
|
if (qp->s_wqe) {
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
qib_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS);
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
} else if (qp->ibqp.qp_type == IB_QPT_RC) {
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
qib_rc_send_complete(qp, ibhdr);
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* qib_verbs_send - send a packet
|
|
* @qp: the QP to send on
|
|
* @hdr: the packet header
|
|
* @hdrwords: the number of 32-bit words in the header
|
|
* @ss: the SGE to send
|
|
* @len: the length of the packet in bytes
|
|
*
|
|
* Return zero if packet is sent or queued OK.
|
|
* Return non-zero and clear qp->s_flags QIB_S_BUSY otherwise.
|
|
*/
|
|
int qib_verbs_send(struct qib_qp *qp, struct qib_ib_header *hdr,
|
|
u32 hdrwords, struct qib_sge_state *ss, u32 len)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device);
|
|
u32 plen;
|
|
int ret;
|
|
u32 dwords = (len + 3) >> 2;
|
|
|
|
/*
|
|
* Calculate the send buffer trigger address.
|
|
* The +1 counts for the pbc control dword following the pbc length.
|
|
*/
|
|
plen = hdrwords + dwords + 1;
|
|
|
|
/*
|
|
* VL15 packets (IB_QPT_SMI) will always use PIO, so we
|
|
* can defer SDMA restart until link goes ACTIVE without
|
|
* worrying about just how we got there.
|
|
*/
|
|
if (qp->ibqp.qp_type == IB_QPT_SMI ||
|
|
!(dd->flags & QIB_HAS_SEND_DMA))
|
|
ret = qib_verbs_send_pio(qp, hdr, hdrwords, ss, len,
|
|
plen, dwords);
|
|
else
|
|
ret = qib_verbs_send_dma(qp, hdr, hdrwords, ss, len,
|
|
plen, dwords);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
|
|
u64 *rwords, u64 *spkts, u64 *rpkts,
|
|
u64 *xmit_wait)
|
|
{
|
|
int ret;
|
|
struct qib_devdata *dd = ppd->dd;
|
|
|
|
if (!(dd->flags & QIB_PRESENT)) {
|
|
/* no hardware, freeze, etc. */
|
|
ret = -EINVAL;
|
|
goto bail;
|
|
}
|
|
*swords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDSEND);
|
|
*rwords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDRCV);
|
|
*spkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTSEND);
|
|
*rpkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTRCV);
|
|
*xmit_wait = dd->f_portcntr(ppd, QIBPORTCNTR_SENDSTALL);
|
|
|
|
ret = 0;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qib_get_counters - get various chip counters
|
|
* @dd: the qlogic_ib device
|
|
* @cntrs: counters are placed here
|
|
*
|
|
* Return the counters needed by recv_pma_get_portcounters().
|
|
*/
|
|
int qib_get_counters(struct qib_pportdata *ppd,
|
|
struct qib_verbs_counters *cntrs)
|
|
{
|
|
int ret;
|
|
|
|
if (!(ppd->dd->flags & QIB_PRESENT)) {
|
|
/* no hardware, freeze, etc. */
|
|
ret = -EINVAL;
|
|
goto bail;
|
|
}
|
|
cntrs->symbol_error_counter =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBSYMBOLERR);
|
|
cntrs->link_error_recovery_counter =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKERRRECOV);
|
|
/*
|
|
* The link downed counter counts when the other side downs the
|
|
* connection. We add in the number of times we downed the link
|
|
* due to local link integrity errors to compensate.
|
|
*/
|
|
cntrs->link_downed_counter =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKDOWN);
|
|
cntrs->port_rcv_errors =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXDROPPKT) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVOVFL) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERR_RLEN) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_INVALIDRLEN) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLINK) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRICRC) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRVCRC) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLPCRC) +
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_BADFORMAT);
|
|
cntrs->port_rcv_errors +=
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXLOCALPHYERR);
|
|
cntrs->port_rcv_errors +=
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXVLERR);
|
|
cntrs->port_rcv_remphys_errors =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVEBP);
|
|
cntrs->port_xmit_discards =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_UNSUPVL);
|
|
cntrs->port_xmit_data = ppd->dd->f_portcntr(ppd,
|
|
QIBPORTCNTR_WORDSEND);
|
|
cntrs->port_rcv_data = ppd->dd->f_portcntr(ppd,
|
|
QIBPORTCNTR_WORDRCV);
|
|
cntrs->port_xmit_packets = ppd->dd->f_portcntr(ppd,
|
|
QIBPORTCNTR_PKTSEND);
|
|
cntrs->port_rcv_packets = ppd->dd->f_portcntr(ppd,
|
|
QIBPORTCNTR_PKTRCV);
|
|
cntrs->local_link_integrity_errors =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_LLI);
|
|
cntrs->excessive_buffer_overrun_errors =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_EXCESSBUFOVFL);
|
|
cntrs->vl15_dropped =
|
|
ppd->dd->f_portcntr(ppd, QIBPORTCNTR_VL15PKTDROP);
|
|
|
|
ret = 0;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qib_ib_piobufavail - callback when a PIO buffer is available
|
|
* @dd: the device pointer
|
|
*
|
|
* This is called from qib_intr() at interrupt level when a PIO buffer is
|
|
* available after qib_verbs_send() returned an error that no buffers were
|
|
* available. Disable the interrupt if there are no more QPs waiting.
|
|
*/
|
|
void qib_ib_piobufavail(struct qib_devdata *dd)
|
|
{
|
|
struct qib_ibdev *dev = &dd->verbs_dev;
|
|
struct list_head *list;
|
|
struct qib_qp *qps[5];
|
|
struct qib_qp *qp;
|
|
unsigned long flags;
|
|
unsigned i, n;
|
|
|
|
list = &dev->piowait;
|
|
n = 0;
|
|
|
|
/*
|
|
* Note: checking that the piowait list is empty and clearing
|
|
* the buffer available interrupt needs to be atomic or we
|
|
* could end up with QPs on the wait list with the interrupt
|
|
* disabled.
|
|
*/
|
|
spin_lock_irqsave(&dev->pending_lock, flags);
|
|
while (!list_empty(list)) {
|
|
if (n == ARRAY_SIZE(qps))
|
|
goto full;
|
|
qp = list_entry(list->next, struct qib_qp, iowait);
|
|
list_del_init(&qp->iowait);
|
|
atomic_inc(&qp->refcount);
|
|
qps[n++] = qp;
|
|
}
|
|
dd->f_wantpiobuf_intr(dd, 0);
|
|
full:
|
|
spin_unlock_irqrestore(&dev->pending_lock, flags);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
qp = qps[i];
|
|
|
|
spin_lock_irqsave(&qp->s_lock, flags);
|
|
if (qp->s_flags & QIB_S_WAIT_PIO) {
|
|
qp->s_flags &= ~QIB_S_WAIT_PIO;
|
|
qib_schedule_send(qp);
|
|
}
|
|
spin_unlock_irqrestore(&qp->s_lock, flags);
|
|
|
|
/* Notify qib_destroy_qp() if it is waiting. */
|
|
if (atomic_dec_and_test(&qp->refcount))
|
|
wake_up(&qp->wait);
|
|
}
|
|
}
|
|
|
|
static int qib_query_device(struct ib_device *ibdev,
|
|
struct ib_device_attr *props)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(ibdev);
|
|
struct qib_ibdev *dev = to_idev(ibdev);
|
|
|
|
memset(props, 0, sizeof(*props));
|
|
|
|
props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR |
|
|
IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT |
|
|
IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN |
|
|
IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE;
|
|
props->page_size_cap = PAGE_SIZE;
|
|
props->vendor_id =
|
|
QIB_SRC_OUI_1 << 16 | QIB_SRC_OUI_2 << 8 | QIB_SRC_OUI_3;
|
|
props->vendor_part_id = dd->deviceid;
|
|
props->hw_ver = dd->minrev;
|
|
props->sys_image_guid = ib_qib_sys_image_guid;
|
|
props->max_mr_size = ~0ULL;
|
|
props->max_qp = ib_qib_max_qps;
|
|
props->max_qp_wr = ib_qib_max_qp_wrs;
|
|
props->max_sge = ib_qib_max_sges;
|
|
props->max_cq = ib_qib_max_cqs;
|
|
props->max_ah = ib_qib_max_ahs;
|
|
props->max_cqe = ib_qib_max_cqes;
|
|
props->max_mr = dev->lk_table.max;
|
|
props->max_fmr = dev->lk_table.max;
|
|
props->max_map_per_fmr = 32767;
|
|
props->max_pd = ib_qib_max_pds;
|
|
props->max_qp_rd_atom = QIB_MAX_RDMA_ATOMIC;
|
|
props->max_qp_init_rd_atom = 255;
|
|
/* props->max_res_rd_atom */
|
|
props->max_srq = ib_qib_max_srqs;
|
|
props->max_srq_wr = ib_qib_max_srq_wrs;
|
|
props->max_srq_sge = ib_qib_max_srq_sges;
|
|
/* props->local_ca_ack_delay */
|
|
props->atomic_cap = IB_ATOMIC_GLOB;
|
|
props->max_pkeys = qib_get_npkeys(dd);
|
|
props->max_mcast_grp = ib_qib_max_mcast_grps;
|
|
props->max_mcast_qp_attach = ib_qib_max_mcast_qp_attached;
|
|
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
|
|
props->max_mcast_grp;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qib_query_port(struct ib_device *ibdev, u8 port,
|
|
struct ib_port_attr *props)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(ibdev);
|
|
struct qib_ibport *ibp = to_iport(ibdev, port);
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
enum ib_mtu mtu;
|
|
u16 lid = ppd->lid;
|
|
|
|
memset(props, 0, sizeof(*props));
|
|
props->lid = lid ? lid : be16_to_cpu(IB_LID_PERMISSIVE);
|
|
props->lmc = ppd->lmc;
|
|
props->sm_lid = ibp->sm_lid;
|
|
props->sm_sl = ibp->sm_sl;
|
|
props->state = dd->f_iblink_state(ppd->lastibcstat);
|
|
props->phys_state = dd->f_ibphys_portstate(ppd->lastibcstat);
|
|
props->port_cap_flags = ibp->port_cap_flags;
|
|
props->gid_tbl_len = QIB_GUIDS_PER_PORT;
|
|
props->max_msg_sz = 0x80000000;
|
|
props->pkey_tbl_len = qib_get_npkeys(dd);
|
|
props->bad_pkey_cntr = ibp->pkey_violations;
|
|
props->qkey_viol_cntr = ibp->qkey_violations;
|
|
props->active_width = ppd->link_width_active;
|
|
/* See rate_show() */
|
|
props->active_speed = ppd->link_speed_active;
|
|
props->max_vl_num = qib_num_vls(ppd->vls_supported);
|
|
props->init_type_reply = 0;
|
|
|
|
props->max_mtu = qib_ibmtu ? qib_ibmtu : IB_MTU_4096;
|
|
switch (ppd->ibmtu) {
|
|
case 4096:
|
|
mtu = IB_MTU_4096;
|
|
break;
|
|
case 2048:
|
|
mtu = IB_MTU_2048;
|
|
break;
|
|
case 1024:
|
|
mtu = IB_MTU_1024;
|
|
break;
|
|
case 512:
|
|
mtu = IB_MTU_512;
|
|
break;
|
|
case 256:
|
|
mtu = IB_MTU_256;
|
|
break;
|
|
default:
|
|
mtu = IB_MTU_2048;
|
|
}
|
|
props->active_mtu = mtu;
|
|
props->subnet_timeout = ibp->subnet_timeout;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qib_modify_device(struct ib_device *device,
|
|
int device_modify_mask,
|
|
struct ib_device_modify *device_modify)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(device);
|
|
unsigned i;
|
|
int ret;
|
|
|
|
if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID |
|
|
IB_DEVICE_MODIFY_NODE_DESC)) {
|
|
ret = -EOPNOTSUPP;
|
|
goto bail;
|
|
}
|
|
|
|
if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) {
|
|
memcpy(device->node_desc, device_modify->node_desc, 64);
|
|
for (i = 0; i < dd->num_pports; i++) {
|
|
struct qib_ibport *ibp = &dd->pport[i].ibport_data;
|
|
|
|
qib_node_desc_chg(ibp);
|
|
}
|
|
}
|
|
|
|
if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) {
|
|
ib_qib_sys_image_guid =
|
|
cpu_to_be64(device_modify->sys_image_guid);
|
|
for (i = 0; i < dd->num_pports; i++) {
|
|
struct qib_ibport *ibp = &dd->pport[i].ibport_data;
|
|
|
|
qib_sys_guid_chg(ibp);
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
static int qib_modify_port(struct ib_device *ibdev, u8 port,
|
|
int port_modify_mask, struct ib_port_modify *props)
|
|
{
|
|
struct qib_ibport *ibp = to_iport(ibdev, port);
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
|
|
ibp->port_cap_flags |= props->set_port_cap_mask;
|
|
ibp->port_cap_flags &= ~props->clr_port_cap_mask;
|
|
if (props->set_port_cap_mask || props->clr_port_cap_mask)
|
|
qib_cap_mask_chg(ibp);
|
|
if (port_modify_mask & IB_PORT_SHUTDOWN)
|
|
qib_set_linkstate(ppd, QIB_IB_LINKDOWN);
|
|
if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR)
|
|
ibp->qkey_violations = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int qib_query_gid(struct ib_device *ibdev, u8 port,
|
|
int index, union ib_gid *gid)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(ibdev);
|
|
int ret = 0;
|
|
|
|
if (!port || port > dd->num_pports)
|
|
ret = -EINVAL;
|
|
else {
|
|
struct qib_ibport *ibp = to_iport(ibdev, port);
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
|
|
gid->global.subnet_prefix = ibp->gid_prefix;
|
|
if (index == 0)
|
|
gid->global.interface_id = ppd->guid;
|
|
else if (index < QIB_GUIDS_PER_PORT)
|
|
gid->global.interface_id = ibp->guids[index - 1];
|
|
else
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct ib_pd *qib_alloc_pd(struct ib_device *ibdev,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct qib_ibdev *dev = to_idev(ibdev);
|
|
struct qib_pd *pd;
|
|
struct ib_pd *ret;
|
|
|
|
/*
|
|
* This is actually totally arbitrary. Some correctness tests
|
|
* assume there's a maximum number of PDs that can be allocated.
|
|
* We don't actually have this limit, but we fail the test if
|
|
* we allow allocations of more than we report for this value.
|
|
*/
|
|
|
|
pd = kmalloc(sizeof *pd, GFP_KERNEL);
|
|
if (!pd) {
|
|
ret = ERR_PTR(-ENOMEM);
|
|
goto bail;
|
|
}
|
|
|
|
spin_lock(&dev->n_pds_lock);
|
|
if (dev->n_pds_allocated == ib_qib_max_pds) {
|
|
spin_unlock(&dev->n_pds_lock);
|
|
kfree(pd);
|
|
ret = ERR_PTR(-ENOMEM);
|
|
goto bail;
|
|
}
|
|
|
|
dev->n_pds_allocated++;
|
|
spin_unlock(&dev->n_pds_lock);
|
|
|
|
/* ib_alloc_pd() will initialize pd->ibpd. */
|
|
pd->user = udata != NULL;
|
|
|
|
ret = &pd->ibpd;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
static int qib_dealloc_pd(struct ib_pd *ibpd)
|
|
{
|
|
struct qib_pd *pd = to_ipd(ibpd);
|
|
struct qib_ibdev *dev = to_idev(ibpd->device);
|
|
|
|
spin_lock(&dev->n_pds_lock);
|
|
dev->n_pds_allocated--;
|
|
spin_unlock(&dev->n_pds_lock);
|
|
|
|
kfree(pd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr)
|
|
{
|
|
/* A multicast address requires a GRH (see ch. 8.4.1). */
|
|
if (ah_attr->dlid >= QIB_MULTICAST_LID_BASE &&
|
|
ah_attr->dlid != QIB_PERMISSIVE_LID &&
|
|
!(ah_attr->ah_flags & IB_AH_GRH))
|
|
goto bail;
|
|
if ((ah_attr->ah_flags & IB_AH_GRH) &&
|
|
ah_attr->grh.sgid_index >= QIB_GUIDS_PER_PORT)
|
|
goto bail;
|
|
if (ah_attr->dlid == 0)
|
|
goto bail;
|
|
if (ah_attr->port_num < 1 ||
|
|
ah_attr->port_num > ibdev->phys_port_cnt)
|
|
goto bail;
|
|
if (ah_attr->static_rate != IB_RATE_PORT_CURRENT &&
|
|
ib_rate_to_mult(ah_attr->static_rate) < 0)
|
|
goto bail;
|
|
if (ah_attr->sl > 15)
|
|
goto bail;
|
|
return 0;
|
|
bail:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* qib_create_ah - create an address handle
|
|
* @pd: the protection domain
|
|
* @ah_attr: the attributes of the AH
|
|
*
|
|
* This may be called from interrupt context.
|
|
*/
|
|
static struct ib_ah *qib_create_ah(struct ib_pd *pd,
|
|
struct ib_ah_attr *ah_attr)
|
|
{
|
|
struct qib_ah *ah;
|
|
struct ib_ah *ret;
|
|
struct qib_ibdev *dev = to_idev(pd->device);
|
|
unsigned long flags;
|
|
|
|
if (qib_check_ah(pd->device, ah_attr)) {
|
|
ret = ERR_PTR(-EINVAL);
|
|
goto bail;
|
|
}
|
|
|
|
ah = kmalloc(sizeof *ah, GFP_ATOMIC);
|
|
if (!ah) {
|
|
ret = ERR_PTR(-ENOMEM);
|
|
goto bail;
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->n_ahs_lock, flags);
|
|
if (dev->n_ahs_allocated == ib_qib_max_ahs) {
|
|
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
|
|
kfree(ah);
|
|
ret = ERR_PTR(-ENOMEM);
|
|
goto bail;
|
|
}
|
|
|
|
dev->n_ahs_allocated++;
|
|
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
|
|
|
|
/* ib_create_ah() will initialize ah->ibah. */
|
|
ah->attr = *ah_attr;
|
|
atomic_set(&ah->refcount, 0);
|
|
|
|
ret = &ah->ibah;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid)
|
|
{
|
|
struct ib_ah_attr attr;
|
|
struct ib_ah *ah = ERR_PTR(-EINVAL);
|
|
struct qib_qp *qp0;
|
|
|
|
memset(&attr, 0, sizeof attr);
|
|
attr.dlid = dlid;
|
|
attr.port_num = ppd_from_ibp(ibp)->port;
|
|
rcu_read_lock();
|
|
qp0 = rcu_dereference(ibp->qp0);
|
|
if (qp0)
|
|
ah = ib_create_ah(qp0->ibqp.pd, &attr);
|
|
rcu_read_unlock();
|
|
return ah;
|
|
}
|
|
|
|
/**
|
|
* qib_destroy_ah - destroy an address handle
|
|
* @ibah: the AH to destroy
|
|
*
|
|
* This may be called from interrupt context.
|
|
*/
|
|
static int qib_destroy_ah(struct ib_ah *ibah)
|
|
{
|
|
struct qib_ibdev *dev = to_idev(ibah->device);
|
|
struct qib_ah *ah = to_iah(ibah);
|
|
unsigned long flags;
|
|
|
|
if (atomic_read(&ah->refcount) != 0)
|
|
return -EBUSY;
|
|
|
|
spin_lock_irqsave(&dev->n_ahs_lock, flags);
|
|
dev->n_ahs_allocated--;
|
|
spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
|
|
|
|
kfree(ah);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qib_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
|
|
{
|
|
struct qib_ah *ah = to_iah(ibah);
|
|
|
|
if (qib_check_ah(ibah->device, ah_attr))
|
|
return -EINVAL;
|
|
|
|
ah->attr = *ah_attr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
|
|
{
|
|
struct qib_ah *ah = to_iah(ibah);
|
|
|
|
*ah_attr = ah->attr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* qib_get_npkeys - return the size of the PKEY table for context 0
|
|
* @dd: the qlogic_ib device
|
|
*/
|
|
unsigned qib_get_npkeys(struct qib_devdata *dd)
|
|
{
|
|
return ARRAY_SIZE(dd->rcd[0]->pkeys);
|
|
}
|
|
|
|
/*
|
|
* Return the indexed PKEY from the port PKEY table.
|
|
* No need to validate rcd[ctxt]; the port is setup if we are here.
|
|
*/
|
|
unsigned qib_get_pkey(struct qib_ibport *ibp, unsigned index)
|
|
{
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
struct qib_devdata *dd = ppd->dd;
|
|
unsigned ctxt = ppd->hw_pidx;
|
|
unsigned ret;
|
|
|
|
/* dd->rcd null if mini_init or some init failures */
|
|
if (!dd->rcd || index >= ARRAY_SIZE(dd->rcd[ctxt]->pkeys))
|
|
ret = 0;
|
|
else
|
|
ret = dd->rcd[ctxt]->pkeys[index];
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int qib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
|
|
u16 *pkey)
|
|
{
|
|
struct qib_devdata *dd = dd_from_ibdev(ibdev);
|
|
int ret;
|
|
|
|
if (index >= qib_get_npkeys(dd)) {
|
|
ret = -EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
*pkey = qib_get_pkey(to_iport(ibdev, port), index);
|
|
ret = 0;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* qib_alloc_ucontext - allocate a ucontest
|
|
* @ibdev: the infiniband device
|
|
* @udata: not used by the QLogic_IB driver
|
|
*/
|
|
|
|
static struct ib_ucontext *qib_alloc_ucontext(struct ib_device *ibdev,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct qib_ucontext *context;
|
|
struct ib_ucontext *ret;
|
|
|
|
context = kmalloc(sizeof *context, GFP_KERNEL);
|
|
if (!context) {
|
|
ret = ERR_PTR(-ENOMEM);
|
|
goto bail;
|
|
}
|
|
|
|
ret = &context->ibucontext;
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
static int qib_dealloc_ucontext(struct ib_ucontext *context)
|
|
{
|
|
kfree(to_iucontext(context));
|
|
return 0;
|
|
}
|
|
|
|
static void init_ibport(struct qib_pportdata *ppd)
|
|
{
|
|
struct qib_verbs_counters cntrs;
|
|
struct qib_ibport *ibp = &ppd->ibport_data;
|
|
|
|
spin_lock_init(&ibp->lock);
|
|
/* Set the prefix to the default value (see ch. 4.1.1) */
|
|
ibp->gid_prefix = IB_DEFAULT_GID_PREFIX;
|
|
ibp->sm_lid = be16_to_cpu(IB_LID_PERMISSIVE);
|
|
ibp->port_cap_flags = IB_PORT_SYS_IMAGE_GUID_SUP |
|
|
IB_PORT_CLIENT_REG_SUP | IB_PORT_SL_MAP_SUP |
|
|
IB_PORT_TRAP_SUP | IB_PORT_AUTO_MIGR_SUP |
|
|
IB_PORT_DR_NOTICE_SUP | IB_PORT_CAP_MASK_NOTICE_SUP |
|
|
IB_PORT_OTHER_LOCAL_CHANGES_SUP;
|
|
if (ppd->dd->flags & QIB_HAS_LINK_LATENCY)
|
|
ibp->port_cap_flags |= IB_PORT_LINK_LATENCY_SUP;
|
|
ibp->pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA;
|
|
ibp->pma_counter_select[1] = IB_PMA_PORT_RCV_DATA;
|
|
ibp->pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS;
|
|
ibp->pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS;
|
|
ibp->pma_counter_select[4] = IB_PMA_PORT_XMIT_WAIT;
|
|
|
|
/* Snapshot current HW counters to "clear" them. */
|
|
qib_get_counters(ppd, &cntrs);
|
|
ibp->z_symbol_error_counter = cntrs.symbol_error_counter;
|
|
ibp->z_link_error_recovery_counter =
|
|
cntrs.link_error_recovery_counter;
|
|
ibp->z_link_downed_counter = cntrs.link_downed_counter;
|
|
ibp->z_port_rcv_errors = cntrs.port_rcv_errors;
|
|
ibp->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors;
|
|
ibp->z_port_xmit_discards = cntrs.port_xmit_discards;
|
|
ibp->z_port_xmit_data = cntrs.port_xmit_data;
|
|
ibp->z_port_rcv_data = cntrs.port_rcv_data;
|
|
ibp->z_port_xmit_packets = cntrs.port_xmit_packets;
|
|
ibp->z_port_rcv_packets = cntrs.port_rcv_packets;
|
|
ibp->z_local_link_integrity_errors =
|
|
cntrs.local_link_integrity_errors;
|
|
ibp->z_excessive_buffer_overrun_errors =
|
|
cntrs.excessive_buffer_overrun_errors;
|
|
ibp->z_vl15_dropped = cntrs.vl15_dropped;
|
|
RCU_INIT_POINTER(ibp->qp0, NULL);
|
|
RCU_INIT_POINTER(ibp->qp1, NULL);
|
|
}
|
|
|
|
/**
|
|
* qib_register_ib_device - register our device with the infiniband core
|
|
* @dd: the device data structure
|
|
* Return the allocated qib_ibdev pointer or NULL on error.
|
|
*/
|
|
int qib_register_ib_device(struct qib_devdata *dd)
|
|
{
|
|
struct qib_ibdev *dev = &dd->verbs_dev;
|
|
struct ib_device *ibdev = &dev->ibdev;
|
|
struct qib_pportdata *ppd = dd->pport;
|
|
unsigned i, lk_tab_size;
|
|
int ret;
|
|
|
|
dev->qp_table_size = ib_qib_qp_table_size;
|
|
get_random_bytes(&dev->qp_rnd, sizeof(dev->qp_rnd));
|
|
dev->qp_table = kmalloc(dev->qp_table_size * sizeof *dev->qp_table,
|
|
GFP_KERNEL);
|
|
if (!dev->qp_table) {
|
|
ret = -ENOMEM;
|
|
goto err_qpt;
|
|
}
|
|
for (i = 0; i < dev->qp_table_size; i++)
|
|
RCU_INIT_POINTER(dev->qp_table[i], NULL);
|
|
|
|
for (i = 0; i < dd->num_pports; i++)
|
|
init_ibport(ppd + i);
|
|
|
|
/* Only need to initialize non-zero fields. */
|
|
spin_lock_init(&dev->qpt_lock);
|
|
spin_lock_init(&dev->n_pds_lock);
|
|
spin_lock_init(&dev->n_ahs_lock);
|
|
spin_lock_init(&dev->n_cqs_lock);
|
|
spin_lock_init(&dev->n_qps_lock);
|
|
spin_lock_init(&dev->n_srqs_lock);
|
|
spin_lock_init(&dev->n_mcast_grps_lock);
|
|
init_timer(&dev->mem_timer);
|
|
dev->mem_timer.function = mem_timer;
|
|
dev->mem_timer.data = (unsigned long) dev;
|
|
|
|
qib_init_qpn_table(dd, &dev->qpn_table);
|
|
|
|
/*
|
|
* The top ib_qib_lkey_table_size bits are used to index the
|
|
* table. The lower 8 bits can be owned by the user (copied from
|
|
* the LKEY). The remaining bits act as a generation number or tag.
|
|
*/
|
|
spin_lock_init(&dev->lk_table.lock);
|
|
dev->lk_table.max = 1 << ib_qib_lkey_table_size;
|
|
lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
|
|
dev->lk_table.table = (struct qib_mregion __rcu **)
|
|
__get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
|
|
if (dev->lk_table.table == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err_lk;
|
|
}
|
|
RCU_INIT_POINTER(dev->dma_mr, NULL);
|
|
for (i = 0; i < dev->lk_table.max; i++)
|
|
RCU_INIT_POINTER(dev->lk_table.table[i], NULL);
|
|
INIT_LIST_HEAD(&dev->pending_mmaps);
|
|
spin_lock_init(&dev->pending_lock);
|
|
dev->mmap_offset = PAGE_SIZE;
|
|
spin_lock_init(&dev->mmap_offset_lock);
|
|
INIT_LIST_HEAD(&dev->piowait);
|
|
INIT_LIST_HEAD(&dev->dmawait);
|
|
INIT_LIST_HEAD(&dev->txwait);
|
|
INIT_LIST_HEAD(&dev->memwait);
|
|
INIT_LIST_HEAD(&dev->txreq_free);
|
|
|
|
if (ppd->sdma_descq_cnt) {
|
|
dev->pio_hdrs = dma_alloc_coherent(&dd->pcidev->dev,
|
|
ppd->sdma_descq_cnt *
|
|
sizeof(struct qib_pio_header),
|
|
&dev->pio_hdrs_phys,
|
|
GFP_KERNEL);
|
|
if (!dev->pio_hdrs) {
|
|
ret = -ENOMEM;
|
|
goto err_hdrs;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ppd->sdma_descq_cnt; i++) {
|
|
struct qib_verbs_txreq *tx;
|
|
|
|
tx = kzalloc(sizeof *tx, GFP_KERNEL);
|
|
if (!tx) {
|
|
ret = -ENOMEM;
|
|
goto err_tx;
|
|
}
|
|
tx->hdr_inx = i;
|
|
list_add(&tx->txreq.list, &dev->txreq_free);
|
|
}
|
|
|
|
/*
|
|
* The system image GUID is supposed to be the same for all
|
|
* IB HCAs in a single system but since there can be other
|
|
* device types in the system, we can't be sure this is unique.
|
|
*/
|
|
if (!ib_qib_sys_image_guid)
|
|
ib_qib_sys_image_guid = ppd->guid;
|
|
|
|
strlcpy(ibdev->name, "qib%d", IB_DEVICE_NAME_MAX);
|
|
ibdev->owner = THIS_MODULE;
|
|
ibdev->node_guid = ppd->guid;
|
|
ibdev->uverbs_abi_ver = QIB_UVERBS_ABI_VERSION;
|
|
ibdev->uverbs_cmd_mask =
|
|
(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
|
|
(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
|
|
(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
|
|
(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
|
|
(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
|
|
(1ull << IB_USER_VERBS_CMD_CREATE_AH) |
|
|
(1ull << IB_USER_VERBS_CMD_MODIFY_AH) |
|
|
(1ull << IB_USER_VERBS_CMD_QUERY_AH) |
|
|
(1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
|
|
(1ull << IB_USER_VERBS_CMD_REG_MR) |
|
|
(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
|
|
(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
|
|
(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
|
|
(1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
|
|
(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
|
|
(1ull << IB_USER_VERBS_CMD_POLL_CQ) |
|
|
(1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
|
|
(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
|
|
(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
|
|
(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
|
|
(1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
|
|
(1ull << IB_USER_VERBS_CMD_POST_SEND) |
|
|
(1ull << IB_USER_VERBS_CMD_POST_RECV) |
|
|
(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
|
|
(1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
|
|
(1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
|
|
(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
|
|
(1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
|
|
(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
|
|
(1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV);
|
|
ibdev->node_type = RDMA_NODE_IB_CA;
|
|
ibdev->phys_port_cnt = dd->num_pports;
|
|
ibdev->num_comp_vectors = 1;
|
|
ibdev->dma_device = &dd->pcidev->dev;
|
|
ibdev->query_device = qib_query_device;
|
|
ibdev->modify_device = qib_modify_device;
|
|
ibdev->query_port = qib_query_port;
|
|
ibdev->modify_port = qib_modify_port;
|
|
ibdev->query_pkey = qib_query_pkey;
|
|
ibdev->query_gid = qib_query_gid;
|
|
ibdev->alloc_ucontext = qib_alloc_ucontext;
|
|
ibdev->dealloc_ucontext = qib_dealloc_ucontext;
|
|
ibdev->alloc_pd = qib_alloc_pd;
|
|
ibdev->dealloc_pd = qib_dealloc_pd;
|
|
ibdev->create_ah = qib_create_ah;
|
|
ibdev->destroy_ah = qib_destroy_ah;
|
|
ibdev->modify_ah = qib_modify_ah;
|
|
ibdev->query_ah = qib_query_ah;
|
|
ibdev->create_srq = qib_create_srq;
|
|
ibdev->modify_srq = qib_modify_srq;
|
|
ibdev->query_srq = qib_query_srq;
|
|
ibdev->destroy_srq = qib_destroy_srq;
|
|
ibdev->create_qp = qib_create_qp;
|
|
ibdev->modify_qp = qib_modify_qp;
|
|
ibdev->query_qp = qib_query_qp;
|
|
ibdev->destroy_qp = qib_destroy_qp;
|
|
ibdev->post_send = qib_post_send;
|
|
ibdev->post_recv = qib_post_receive;
|
|
ibdev->post_srq_recv = qib_post_srq_receive;
|
|
ibdev->create_cq = qib_create_cq;
|
|
ibdev->destroy_cq = qib_destroy_cq;
|
|
ibdev->resize_cq = qib_resize_cq;
|
|
ibdev->poll_cq = qib_poll_cq;
|
|
ibdev->req_notify_cq = qib_req_notify_cq;
|
|
ibdev->get_dma_mr = qib_get_dma_mr;
|
|
ibdev->reg_phys_mr = qib_reg_phys_mr;
|
|
ibdev->reg_user_mr = qib_reg_user_mr;
|
|
ibdev->dereg_mr = qib_dereg_mr;
|
|
ibdev->alloc_fast_reg_mr = qib_alloc_fast_reg_mr;
|
|
ibdev->alloc_fast_reg_page_list = qib_alloc_fast_reg_page_list;
|
|
ibdev->free_fast_reg_page_list = qib_free_fast_reg_page_list;
|
|
ibdev->alloc_fmr = qib_alloc_fmr;
|
|
ibdev->map_phys_fmr = qib_map_phys_fmr;
|
|
ibdev->unmap_fmr = qib_unmap_fmr;
|
|
ibdev->dealloc_fmr = qib_dealloc_fmr;
|
|
ibdev->attach_mcast = qib_multicast_attach;
|
|
ibdev->detach_mcast = qib_multicast_detach;
|
|
ibdev->process_mad = qib_process_mad;
|
|
ibdev->mmap = qib_mmap;
|
|
ibdev->dma_ops = &qib_dma_mapping_ops;
|
|
|
|
snprintf(ibdev->node_desc, sizeof(ibdev->node_desc),
|
|
"QLogic Infiniband HCA %s", init_utsname()->nodename);
|
|
|
|
ret = ib_register_device(ibdev, qib_create_port_files);
|
|
if (ret)
|
|
goto err_reg;
|
|
|
|
ret = qib_create_agents(dev);
|
|
if (ret)
|
|
goto err_agents;
|
|
|
|
if (qib_verbs_register_sysfs(dd))
|
|
goto err_class;
|
|
|
|
goto bail;
|
|
|
|
err_class:
|
|
qib_free_agents(dev);
|
|
err_agents:
|
|
ib_unregister_device(ibdev);
|
|
err_reg:
|
|
err_tx:
|
|
while (!list_empty(&dev->txreq_free)) {
|
|
struct list_head *l = dev->txreq_free.next;
|
|
struct qib_verbs_txreq *tx;
|
|
|
|
list_del(l);
|
|
tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
|
|
kfree(tx);
|
|
}
|
|
if (ppd->sdma_descq_cnt)
|
|
dma_free_coherent(&dd->pcidev->dev,
|
|
ppd->sdma_descq_cnt *
|
|
sizeof(struct qib_pio_header),
|
|
dev->pio_hdrs, dev->pio_hdrs_phys);
|
|
err_hdrs:
|
|
free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
|
|
err_lk:
|
|
kfree(dev->qp_table);
|
|
err_qpt:
|
|
qib_dev_err(dd, "cannot register verbs: %d!\n", -ret);
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
void qib_unregister_ib_device(struct qib_devdata *dd)
|
|
{
|
|
struct qib_ibdev *dev = &dd->verbs_dev;
|
|
struct ib_device *ibdev = &dev->ibdev;
|
|
u32 qps_inuse;
|
|
unsigned lk_tab_size;
|
|
|
|
qib_verbs_unregister_sysfs(dd);
|
|
|
|
qib_free_agents(dev);
|
|
|
|
ib_unregister_device(ibdev);
|
|
|
|
if (!list_empty(&dev->piowait))
|
|
qib_dev_err(dd, "piowait list not empty!\n");
|
|
if (!list_empty(&dev->dmawait))
|
|
qib_dev_err(dd, "dmawait list not empty!\n");
|
|
if (!list_empty(&dev->txwait))
|
|
qib_dev_err(dd, "txwait list not empty!\n");
|
|
if (!list_empty(&dev->memwait))
|
|
qib_dev_err(dd, "memwait list not empty!\n");
|
|
if (dev->dma_mr)
|
|
qib_dev_err(dd, "DMA MR not NULL!\n");
|
|
|
|
qps_inuse = qib_free_all_qps(dd);
|
|
if (qps_inuse)
|
|
qib_dev_err(dd, "QP memory leak! %u still in use\n",
|
|
qps_inuse);
|
|
|
|
del_timer_sync(&dev->mem_timer);
|
|
qib_free_qpn_table(&dev->qpn_table);
|
|
while (!list_empty(&dev->txreq_free)) {
|
|
struct list_head *l = dev->txreq_free.next;
|
|
struct qib_verbs_txreq *tx;
|
|
|
|
list_del(l);
|
|
tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
|
|
kfree(tx);
|
|
}
|
|
if (dd->pport->sdma_descq_cnt)
|
|
dma_free_coherent(&dd->pcidev->dev,
|
|
dd->pport->sdma_descq_cnt *
|
|
sizeof(struct qib_pio_header),
|
|
dev->pio_hdrs, dev->pio_hdrs_phys);
|
|
lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
|
|
free_pages((unsigned long) dev->lk_table.table,
|
|
get_order(lk_tab_size));
|
|
kfree(dev->qp_table);
|
|
}
|
|
|
|
/*
|
|
* This must be called with s_lock held.
|
|
*/
|
|
void qib_schedule_send(struct qib_qp *qp)
|
|
{
|
|
if (qib_send_ok(qp)) {
|
|
struct qib_ibport *ibp =
|
|
to_iport(qp->ibqp.device, qp->port_num);
|
|
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
|
|
queue_work(ppd->qib_wq, &qp->s_work);
|
|
}
|
|
}
|