f0d1b0b30d
This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2308 lines
62 KiB
C
2308 lines
62 KiB
C
/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Cisco Systems. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2004 Voltaire, 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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* $Id: mthca_qp.c 1355 2004-12-17 15:23:43Z roland $
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*/
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <asm/io.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_cache.h>
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#include <rdma/ib_pack.h>
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#include "mthca_dev.h"
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#include "mthca_cmd.h"
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#include "mthca_memfree.h"
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#include "mthca_wqe.h"
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enum {
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MTHCA_MAX_DIRECT_QP_SIZE = 4 * PAGE_SIZE,
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MTHCA_ACK_REQ_FREQ = 10,
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MTHCA_FLIGHT_LIMIT = 9,
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MTHCA_UD_HEADER_SIZE = 72, /* largest UD header possible */
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MTHCA_INLINE_HEADER_SIZE = 4, /* data segment overhead for inline */
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MTHCA_INLINE_CHUNK_SIZE = 16 /* inline data segment chunk */
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};
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enum {
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MTHCA_QP_STATE_RST = 0,
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MTHCA_QP_STATE_INIT = 1,
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MTHCA_QP_STATE_RTR = 2,
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MTHCA_QP_STATE_RTS = 3,
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MTHCA_QP_STATE_SQE = 4,
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MTHCA_QP_STATE_SQD = 5,
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MTHCA_QP_STATE_ERR = 6,
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MTHCA_QP_STATE_DRAINING = 7
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};
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enum {
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MTHCA_QP_ST_RC = 0x0,
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MTHCA_QP_ST_UC = 0x1,
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MTHCA_QP_ST_RD = 0x2,
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MTHCA_QP_ST_UD = 0x3,
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MTHCA_QP_ST_MLX = 0x7
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};
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enum {
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MTHCA_QP_PM_MIGRATED = 0x3,
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MTHCA_QP_PM_ARMED = 0x0,
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MTHCA_QP_PM_REARM = 0x1
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};
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enum {
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/* qp_context flags */
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MTHCA_QP_BIT_DE = 1 << 8,
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/* params1 */
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MTHCA_QP_BIT_SRE = 1 << 15,
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MTHCA_QP_BIT_SWE = 1 << 14,
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MTHCA_QP_BIT_SAE = 1 << 13,
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MTHCA_QP_BIT_SIC = 1 << 4,
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MTHCA_QP_BIT_SSC = 1 << 3,
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/* params2 */
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MTHCA_QP_BIT_RRE = 1 << 15,
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MTHCA_QP_BIT_RWE = 1 << 14,
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MTHCA_QP_BIT_RAE = 1 << 13,
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MTHCA_QP_BIT_RIC = 1 << 4,
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MTHCA_QP_BIT_RSC = 1 << 3
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};
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enum {
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MTHCA_SEND_DOORBELL_FENCE = 1 << 5
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};
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struct mthca_qp_path {
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__be32 port_pkey;
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u8 rnr_retry;
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u8 g_mylmc;
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__be16 rlid;
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u8 ackto;
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u8 mgid_index;
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u8 static_rate;
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u8 hop_limit;
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__be32 sl_tclass_flowlabel;
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u8 rgid[16];
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} __attribute__((packed));
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struct mthca_qp_context {
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__be32 flags;
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__be32 tavor_sched_queue; /* Reserved on Arbel */
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u8 mtu_msgmax;
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u8 rq_size_stride; /* Reserved on Tavor */
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u8 sq_size_stride; /* Reserved on Tavor */
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u8 rlkey_arbel_sched_queue; /* Reserved on Tavor */
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__be32 usr_page;
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__be32 local_qpn;
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__be32 remote_qpn;
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u32 reserved1[2];
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struct mthca_qp_path pri_path;
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struct mthca_qp_path alt_path;
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__be32 rdd;
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__be32 pd;
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__be32 wqe_base;
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__be32 wqe_lkey;
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__be32 params1;
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__be32 reserved2;
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__be32 next_send_psn;
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__be32 cqn_snd;
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__be32 snd_wqe_base_l; /* Next send WQE on Tavor */
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__be32 snd_db_index; /* (debugging only entries) */
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__be32 last_acked_psn;
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__be32 ssn;
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__be32 params2;
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__be32 rnr_nextrecvpsn;
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__be32 ra_buff_indx;
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__be32 cqn_rcv;
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__be32 rcv_wqe_base_l; /* Next recv WQE on Tavor */
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__be32 rcv_db_index; /* (debugging only entries) */
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__be32 qkey;
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__be32 srqn;
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__be32 rmsn;
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__be16 rq_wqe_counter; /* reserved on Tavor */
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__be16 sq_wqe_counter; /* reserved on Tavor */
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u32 reserved3[18];
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} __attribute__((packed));
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struct mthca_qp_param {
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__be32 opt_param_mask;
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u32 reserved1;
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struct mthca_qp_context context;
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u32 reserved2[62];
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} __attribute__((packed));
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enum {
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MTHCA_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
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MTHCA_QP_OPTPAR_RRE = 1 << 1,
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MTHCA_QP_OPTPAR_RAE = 1 << 2,
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MTHCA_QP_OPTPAR_RWE = 1 << 3,
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MTHCA_QP_OPTPAR_PKEY_INDEX = 1 << 4,
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MTHCA_QP_OPTPAR_Q_KEY = 1 << 5,
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MTHCA_QP_OPTPAR_RNR_TIMEOUT = 1 << 6,
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MTHCA_QP_OPTPAR_PRIMARY_ADDR_PATH = 1 << 7,
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MTHCA_QP_OPTPAR_SRA_MAX = 1 << 8,
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MTHCA_QP_OPTPAR_RRA_MAX = 1 << 9,
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MTHCA_QP_OPTPAR_PM_STATE = 1 << 10,
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MTHCA_QP_OPTPAR_PORT_NUM = 1 << 11,
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MTHCA_QP_OPTPAR_RETRY_COUNT = 1 << 12,
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MTHCA_QP_OPTPAR_ALT_RNR_RETRY = 1 << 13,
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MTHCA_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
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MTHCA_QP_OPTPAR_RNR_RETRY = 1 << 15,
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MTHCA_QP_OPTPAR_SCHED_QUEUE = 1 << 16
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};
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static const u8 mthca_opcode[] = {
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[IB_WR_SEND] = MTHCA_OPCODE_SEND,
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[IB_WR_SEND_WITH_IMM] = MTHCA_OPCODE_SEND_IMM,
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[IB_WR_RDMA_WRITE] = MTHCA_OPCODE_RDMA_WRITE,
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[IB_WR_RDMA_WRITE_WITH_IMM] = MTHCA_OPCODE_RDMA_WRITE_IMM,
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[IB_WR_RDMA_READ] = MTHCA_OPCODE_RDMA_READ,
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[IB_WR_ATOMIC_CMP_AND_SWP] = MTHCA_OPCODE_ATOMIC_CS,
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[IB_WR_ATOMIC_FETCH_AND_ADD] = MTHCA_OPCODE_ATOMIC_FA,
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};
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static int is_sqp(struct mthca_dev *dev, struct mthca_qp *qp)
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{
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return qp->qpn >= dev->qp_table.sqp_start &&
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qp->qpn <= dev->qp_table.sqp_start + 3;
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}
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static int is_qp0(struct mthca_dev *dev, struct mthca_qp *qp)
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{
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return qp->qpn >= dev->qp_table.sqp_start &&
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qp->qpn <= dev->qp_table.sqp_start + 1;
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}
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static void *get_recv_wqe(struct mthca_qp *qp, int n)
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{
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if (qp->is_direct)
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return qp->queue.direct.buf + (n << qp->rq.wqe_shift);
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else
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return qp->queue.page_list[(n << qp->rq.wqe_shift) >> PAGE_SHIFT].buf +
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((n << qp->rq.wqe_shift) & (PAGE_SIZE - 1));
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}
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static void *get_send_wqe(struct mthca_qp *qp, int n)
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{
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if (qp->is_direct)
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return qp->queue.direct.buf + qp->send_wqe_offset +
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(n << qp->sq.wqe_shift);
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else
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return qp->queue.page_list[(qp->send_wqe_offset +
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(n << qp->sq.wqe_shift)) >>
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PAGE_SHIFT].buf +
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((qp->send_wqe_offset + (n << qp->sq.wqe_shift)) &
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(PAGE_SIZE - 1));
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}
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static void mthca_wq_reset(struct mthca_wq *wq)
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{
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wq->next_ind = 0;
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wq->last_comp = wq->max - 1;
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wq->head = 0;
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wq->tail = 0;
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}
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void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
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enum ib_event_type event_type)
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{
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struct mthca_qp *qp;
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struct ib_event event;
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spin_lock(&dev->qp_table.lock);
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qp = mthca_array_get(&dev->qp_table.qp, qpn & (dev->limits.num_qps - 1));
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if (qp)
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++qp->refcount;
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spin_unlock(&dev->qp_table.lock);
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if (!qp) {
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mthca_warn(dev, "Async event for bogus QP %08x\n", qpn);
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return;
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}
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if (event_type == IB_EVENT_PATH_MIG)
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qp->port = qp->alt_port;
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event.device = &dev->ib_dev;
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event.event = event_type;
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event.element.qp = &qp->ibqp;
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if (qp->ibqp.event_handler)
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qp->ibqp.event_handler(&event, qp->ibqp.qp_context);
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spin_lock(&dev->qp_table.lock);
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if (!--qp->refcount)
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wake_up(&qp->wait);
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spin_unlock(&dev->qp_table.lock);
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}
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static int to_mthca_state(enum ib_qp_state ib_state)
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{
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switch (ib_state) {
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case IB_QPS_RESET: return MTHCA_QP_STATE_RST;
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case IB_QPS_INIT: return MTHCA_QP_STATE_INIT;
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case IB_QPS_RTR: return MTHCA_QP_STATE_RTR;
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case IB_QPS_RTS: return MTHCA_QP_STATE_RTS;
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case IB_QPS_SQD: return MTHCA_QP_STATE_SQD;
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case IB_QPS_SQE: return MTHCA_QP_STATE_SQE;
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case IB_QPS_ERR: return MTHCA_QP_STATE_ERR;
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default: return -1;
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}
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}
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enum { RC, UC, UD, RD, RDEE, MLX, NUM_TRANS };
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static int to_mthca_st(int transport)
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{
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switch (transport) {
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case RC: return MTHCA_QP_ST_RC;
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case UC: return MTHCA_QP_ST_UC;
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case UD: return MTHCA_QP_ST_UD;
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case RD: return MTHCA_QP_ST_RD;
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case MLX: return MTHCA_QP_ST_MLX;
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default: return -1;
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}
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}
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static void store_attrs(struct mthca_sqp *sqp, struct ib_qp_attr *attr,
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int attr_mask)
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{
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if (attr_mask & IB_QP_PKEY_INDEX)
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sqp->pkey_index = attr->pkey_index;
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if (attr_mask & IB_QP_QKEY)
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sqp->qkey = attr->qkey;
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if (attr_mask & IB_QP_SQ_PSN)
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sqp->send_psn = attr->sq_psn;
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}
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static void init_port(struct mthca_dev *dev, int port)
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{
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int err;
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u8 status;
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struct mthca_init_ib_param param;
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memset(¶m, 0, sizeof param);
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param.port_width = dev->limits.port_width_cap;
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param.vl_cap = dev->limits.vl_cap;
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param.mtu_cap = dev->limits.mtu_cap;
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param.gid_cap = dev->limits.gid_table_len;
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param.pkey_cap = dev->limits.pkey_table_len;
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err = mthca_INIT_IB(dev, ¶m, port, &status);
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if (err)
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mthca_warn(dev, "INIT_IB failed, return code %d.\n", err);
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if (status)
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mthca_warn(dev, "INIT_IB returned status %02x.\n", status);
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}
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static __be32 get_hw_access_flags(struct mthca_qp *qp, struct ib_qp_attr *attr,
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int attr_mask)
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{
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u8 dest_rd_atomic;
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u32 access_flags;
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u32 hw_access_flags = 0;
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if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
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dest_rd_atomic = attr->max_dest_rd_atomic;
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else
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dest_rd_atomic = qp->resp_depth;
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if (attr_mask & IB_QP_ACCESS_FLAGS)
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access_flags = attr->qp_access_flags;
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else
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access_flags = qp->atomic_rd_en;
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if (!dest_rd_atomic)
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access_flags &= IB_ACCESS_REMOTE_WRITE;
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if (access_flags & IB_ACCESS_REMOTE_READ)
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hw_access_flags |= MTHCA_QP_BIT_RRE;
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if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
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hw_access_flags |= MTHCA_QP_BIT_RAE;
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if (access_flags & IB_ACCESS_REMOTE_WRITE)
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hw_access_flags |= MTHCA_QP_BIT_RWE;
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return cpu_to_be32(hw_access_flags);
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}
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static inline enum ib_qp_state to_ib_qp_state(int mthca_state)
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{
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switch (mthca_state) {
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case MTHCA_QP_STATE_RST: return IB_QPS_RESET;
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case MTHCA_QP_STATE_INIT: return IB_QPS_INIT;
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case MTHCA_QP_STATE_RTR: return IB_QPS_RTR;
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case MTHCA_QP_STATE_RTS: return IB_QPS_RTS;
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case MTHCA_QP_STATE_DRAINING:
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case MTHCA_QP_STATE_SQD: return IB_QPS_SQD;
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case MTHCA_QP_STATE_SQE: return IB_QPS_SQE;
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case MTHCA_QP_STATE_ERR: return IB_QPS_ERR;
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default: return -1;
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}
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}
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static inline enum ib_mig_state to_ib_mig_state(int mthca_mig_state)
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{
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switch (mthca_mig_state) {
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case 0: return IB_MIG_ARMED;
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case 1: return IB_MIG_REARM;
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case 3: return IB_MIG_MIGRATED;
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default: return -1;
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}
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}
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static int to_ib_qp_access_flags(int mthca_flags)
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{
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int ib_flags = 0;
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if (mthca_flags & MTHCA_QP_BIT_RRE)
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ib_flags |= IB_ACCESS_REMOTE_READ;
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if (mthca_flags & MTHCA_QP_BIT_RWE)
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ib_flags |= IB_ACCESS_REMOTE_WRITE;
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if (mthca_flags & MTHCA_QP_BIT_RAE)
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ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
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return ib_flags;
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}
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static void to_ib_ah_attr(struct mthca_dev *dev, struct ib_ah_attr *ib_ah_attr,
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struct mthca_qp_path *path)
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{
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memset(ib_ah_attr, 0, sizeof *path);
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ib_ah_attr->port_num = (be32_to_cpu(path->port_pkey) >> 24) & 0x3;
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if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->limits.num_ports)
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return;
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ib_ah_attr->dlid = be16_to_cpu(path->rlid);
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ib_ah_attr->sl = be32_to_cpu(path->sl_tclass_flowlabel) >> 28;
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ib_ah_attr->src_path_bits = path->g_mylmc & 0x7f;
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ib_ah_attr->static_rate = mthca_rate_to_ib(dev,
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path->static_rate & 0xf,
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ib_ah_attr->port_num);
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ib_ah_attr->ah_flags = (path->g_mylmc & (1 << 7)) ? IB_AH_GRH : 0;
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if (ib_ah_attr->ah_flags) {
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ib_ah_attr->grh.sgid_index = path->mgid_index & (dev->limits.gid_table_len - 1);
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ib_ah_attr->grh.hop_limit = path->hop_limit;
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ib_ah_attr->grh.traffic_class =
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(be32_to_cpu(path->sl_tclass_flowlabel) >> 20) & 0xff;
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ib_ah_attr->grh.flow_label =
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be32_to_cpu(path->sl_tclass_flowlabel) & 0xfffff;
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memcpy(ib_ah_attr->grh.dgid.raw,
|
|
path->rgid, sizeof ib_ah_attr->grh.dgid.raw);
|
|
}
|
|
}
|
|
|
|
int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
int err;
|
|
struct mthca_mailbox *mailbox;
|
|
struct mthca_qp_param *qp_param;
|
|
struct mthca_qp_context *context;
|
|
int mthca_state;
|
|
u8 status;
|
|
|
|
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
|
|
if (IS_ERR(mailbox))
|
|
return PTR_ERR(mailbox);
|
|
|
|
err = mthca_QUERY_QP(dev, qp->qpn, 0, mailbox, &status);
|
|
if (err)
|
|
goto out;
|
|
if (status) {
|
|
mthca_warn(dev, "QUERY_QP returned status %02x\n", status);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
qp_param = mailbox->buf;
|
|
context = &qp_param->context;
|
|
mthca_state = be32_to_cpu(context->flags) >> 28;
|
|
|
|
qp_attr->qp_state = to_ib_qp_state(mthca_state);
|
|
qp_attr->cur_qp_state = qp_attr->qp_state;
|
|
qp_attr->path_mtu = context->mtu_msgmax >> 5;
|
|
qp_attr->path_mig_state =
|
|
to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
|
|
qp_attr->qkey = be32_to_cpu(context->qkey);
|
|
qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
|
|
qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff;
|
|
qp_attr->dest_qp_num = be32_to_cpu(context->remote_qpn) & 0xffffff;
|
|
qp_attr->qp_access_flags =
|
|
to_ib_qp_access_flags(be32_to_cpu(context->params2));
|
|
qp_attr->cap.max_send_wr = qp->sq.max;
|
|
qp_attr->cap.max_recv_wr = qp->rq.max;
|
|
qp_attr->cap.max_send_sge = qp->sq.max_gs;
|
|
qp_attr->cap.max_recv_sge = qp->rq.max_gs;
|
|
qp_attr->cap.max_inline_data = qp->max_inline_data;
|
|
|
|
if (qp->transport == RC || qp->transport == UC) {
|
|
to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
|
|
to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
|
|
qp_attr->alt_pkey_index =
|
|
be32_to_cpu(context->alt_path.port_pkey) & 0x7f;
|
|
qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num;
|
|
}
|
|
|
|
qp_attr->pkey_index = be32_to_cpu(context->pri_path.port_pkey) & 0x7f;
|
|
qp_attr->port_num =
|
|
(be32_to_cpu(context->pri_path.port_pkey) >> 24) & 0x3;
|
|
|
|
/* qp_attr->en_sqd_async_notify is only applicable in modify qp */
|
|
qp_attr->sq_draining = mthca_state == MTHCA_QP_STATE_DRAINING;
|
|
|
|
qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
|
|
|
|
qp_attr->max_dest_rd_atomic =
|
|
1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
|
|
qp_attr->min_rnr_timer =
|
|
(be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
|
|
qp_attr->timeout = context->pri_path.ackto >> 3;
|
|
qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7;
|
|
qp_attr->rnr_retry = context->pri_path.rnr_retry >> 5;
|
|
qp_attr->alt_timeout = context->alt_path.ackto >> 3;
|
|
qp_init_attr->cap = qp_attr->cap;
|
|
|
|
out:
|
|
mthca_free_mailbox(dev, mailbox);
|
|
return err;
|
|
}
|
|
|
|
static int mthca_path_set(struct mthca_dev *dev, struct ib_ah_attr *ah,
|
|
struct mthca_qp_path *path, u8 port)
|
|
{
|
|
path->g_mylmc = ah->src_path_bits & 0x7f;
|
|
path->rlid = cpu_to_be16(ah->dlid);
|
|
path->static_rate = mthca_get_rate(dev, ah->static_rate, port);
|
|
|
|
if (ah->ah_flags & IB_AH_GRH) {
|
|
if (ah->grh.sgid_index >= dev->limits.gid_table_len) {
|
|
mthca_dbg(dev, "sgid_index (%u) too large. max is %d\n",
|
|
ah->grh.sgid_index, dev->limits.gid_table_len-1);
|
|
return -1;
|
|
}
|
|
|
|
path->g_mylmc |= 1 << 7;
|
|
path->mgid_index = ah->grh.sgid_index;
|
|
path->hop_limit = ah->grh.hop_limit;
|
|
path->sl_tclass_flowlabel =
|
|
cpu_to_be32((ah->sl << 28) |
|
|
(ah->grh.traffic_class << 20) |
|
|
(ah->grh.flow_label));
|
|
memcpy(path->rgid, ah->grh.dgid.raw, 16);
|
|
} else
|
|
path->sl_tclass_flowlabel = cpu_to_be32(ah->sl << 28);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
enum ib_qp_state cur_state, new_state;
|
|
struct mthca_mailbox *mailbox;
|
|
struct mthca_qp_param *qp_param;
|
|
struct mthca_qp_context *qp_context;
|
|
u32 sqd_event = 0;
|
|
u8 status;
|
|
int err = -EINVAL;
|
|
|
|
mutex_lock(&qp->mutex);
|
|
|
|
if (attr_mask & IB_QP_CUR_STATE) {
|
|
cur_state = attr->cur_qp_state;
|
|
} else {
|
|
spin_lock_irq(&qp->sq.lock);
|
|
spin_lock(&qp->rq.lock);
|
|
cur_state = qp->state;
|
|
spin_unlock(&qp->rq.lock);
|
|
spin_unlock_irq(&qp->sq.lock);
|
|
}
|
|
|
|
new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
|
|
|
|
if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask)) {
|
|
mthca_dbg(dev, "Bad QP transition (transport %d) "
|
|
"%d->%d with attr 0x%08x\n",
|
|
qp->transport, cur_state, new_state,
|
|
attr_mask);
|
|
goto out;
|
|
}
|
|
|
|
if ((attr_mask & IB_QP_PKEY_INDEX) &&
|
|
attr->pkey_index >= dev->limits.pkey_table_len) {
|
|
mthca_dbg(dev, "P_Key index (%u) too large. max is %d\n",
|
|
attr->pkey_index, dev->limits.pkey_table_len-1);
|
|
goto out;
|
|
}
|
|
|
|
if ((attr_mask & IB_QP_PORT) &&
|
|
(attr->port_num == 0 || attr->port_num > dev->limits.num_ports)) {
|
|
mthca_dbg(dev, "Port number (%u) is invalid\n", attr->port_num);
|
|
goto out;
|
|
}
|
|
|
|
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
|
|
attr->max_rd_atomic > dev->limits.max_qp_init_rdma) {
|
|
mthca_dbg(dev, "Max rdma_atomic as initiator %u too large (max is %d)\n",
|
|
attr->max_rd_atomic, dev->limits.max_qp_init_rdma);
|
|
goto out;
|
|
}
|
|
|
|
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
|
|
attr->max_dest_rd_atomic > 1 << dev->qp_table.rdb_shift) {
|
|
mthca_dbg(dev, "Max rdma_atomic as responder %u too large (max %d)\n",
|
|
attr->max_dest_rd_atomic, 1 << dev->qp_table.rdb_shift);
|
|
goto out;
|
|
}
|
|
|
|
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
|
|
if (IS_ERR(mailbox)) {
|
|
err = PTR_ERR(mailbox);
|
|
goto out;
|
|
}
|
|
qp_param = mailbox->buf;
|
|
qp_context = &qp_param->context;
|
|
memset(qp_param, 0, sizeof *qp_param);
|
|
|
|
qp_context->flags = cpu_to_be32((to_mthca_state(new_state) << 28) |
|
|
(to_mthca_st(qp->transport) << 16));
|
|
qp_context->flags |= cpu_to_be32(MTHCA_QP_BIT_DE);
|
|
if (!(attr_mask & IB_QP_PATH_MIG_STATE))
|
|
qp_context->flags |= cpu_to_be32(MTHCA_QP_PM_MIGRATED << 11);
|
|
else {
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_PM_STATE);
|
|
switch (attr->path_mig_state) {
|
|
case IB_MIG_MIGRATED:
|
|
qp_context->flags |= cpu_to_be32(MTHCA_QP_PM_MIGRATED << 11);
|
|
break;
|
|
case IB_MIG_REARM:
|
|
qp_context->flags |= cpu_to_be32(MTHCA_QP_PM_REARM << 11);
|
|
break;
|
|
case IB_MIG_ARMED:
|
|
qp_context->flags |= cpu_to_be32(MTHCA_QP_PM_ARMED << 11);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* leave tavor_sched_queue as 0 */
|
|
|
|
if (qp->transport == MLX || qp->transport == UD)
|
|
qp_context->mtu_msgmax = (IB_MTU_2048 << 5) | 11;
|
|
else if (attr_mask & IB_QP_PATH_MTU) {
|
|
if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_2048) {
|
|
mthca_dbg(dev, "path MTU (%u) is invalid\n",
|
|
attr->path_mtu);
|
|
goto out_mailbox;
|
|
}
|
|
qp_context->mtu_msgmax = (attr->path_mtu << 5) | 31;
|
|
}
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
if (qp->rq.max)
|
|
qp_context->rq_size_stride = ilog2(qp->rq.max) << 3;
|
|
qp_context->rq_size_stride |= qp->rq.wqe_shift - 4;
|
|
|
|
if (qp->sq.max)
|
|
qp_context->sq_size_stride = ilog2(qp->sq.max) << 3;
|
|
qp_context->sq_size_stride |= qp->sq.wqe_shift - 4;
|
|
}
|
|
|
|
/* leave arbel_sched_queue as 0 */
|
|
|
|
if (qp->ibqp.uobject)
|
|
qp_context->usr_page =
|
|
cpu_to_be32(to_mucontext(qp->ibqp.uobject->context)->uar.index);
|
|
else
|
|
qp_context->usr_page = cpu_to_be32(dev->driver_uar.index);
|
|
qp_context->local_qpn = cpu_to_be32(qp->qpn);
|
|
if (attr_mask & IB_QP_DEST_QPN) {
|
|
qp_context->remote_qpn = cpu_to_be32(attr->dest_qp_num);
|
|
}
|
|
|
|
if (qp->transport == MLX)
|
|
qp_context->pri_path.port_pkey |=
|
|
cpu_to_be32(qp->port << 24);
|
|
else {
|
|
if (attr_mask & IB_QP_PORT) {
|
|
qp_context->pri_path.port_pkey |=
|
|
cpu_to_be32(attr->port_num << 24);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_PORT_NUM);
|
|
}
|
|
}
|
|
|
|
if (attr_mask & IB_QP_PKEY_INDEX) {
|
|
qp_context->pri_path.port_pkey |=
|
|
cpu_to_be32(attr->pkey_index);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_PKEY_INDEX);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_RNR_RETRY) {
|
|
qp_context->alt_path.rnr_retry = qp_context->pri_path.rnr_retry =
|
|
attr->rnr_retry << 5;
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RNR_RETRY |
|
|
MTHCA_QP_OPTPAR_ALT_RNR_RETRY);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_AV) {
|
|
if (mthca_path_set(dev, &attr->ah_attr, &qp_context->pri_path,
|
|
attr_mask & IB_QP_PORT ? attr->port_num : qp->port))
|
|
goto out_mailbox;
|
|
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_PRIMARY_ADDR_PATH);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_TIMEOUT) {
|
|
qp_context->pri_path.ackto = attr->timeout << 3;
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_ACK_TIMEOUT);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_ALT_PATH) {
|
|
if (attr->alt_pkey_index >= dev->limits.pkey_table_len) {
|
|
mthca_dbg(dev, "Alternate P_Key index (%u) too large. max is %d\n",
|
|
attr->alt_pkey_index, dev->limits.pkey_table_len-1);
|
|
goto out_mailbox;
|
|
}
|
|
|
|
if (attr->alt_port_num == 0 || attr->alt_port_num > dev->limits.num_ports) {
|
|
mthca_dbg(dev, "Alternate port number (%u) is invalid\n",
|
|
attr->alt_port_num);
|
|
goto out_mailbox;
|
|
}
|
|
|
|
if (mthca_path_set(dev, &attr->alt_ah_attr, &qp_context->alt_path,
|
|
attr->alt_ah_attr.port_num))
|
|
goto out_mailbox;
|
|
|
|
qp_context->alt_path.port_pkey |= cpu_to_be32(attr->alt_pkey_index |
|
|
attr->alt_port_num << 24);
|
|
qp_context->alt_path.ackto = attr->alt_timeout << 3;
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_ALT_ADDR_PATH);
|
|
}
|
|
|
|
/* leave rdd as 0 */
|
|
qp_context->pd = cpu_to_be32(to_mpd(ibqp->pd)->pd_num);
|
|
/* leave wqe_base as 0 (we always create an MR based at 0 for WQs) */
|
|
qp_context->wqe_lkey = cpu_to_be32(qp->mr.ibmr.lkey);
|
|
qp_context->params1 = cpu_to_be32((MTHCA_ACK_REQ_FREQ << 28) |
|
|
(MTHCA_FLIGHT_LIMIT << 24) |
|
|
MTHCA_QP_BIT_SWE);
|
|
if (qp->sq_policy == IB_SIGNAL_ALL_WR)
|
|
qp_context->params1 |= cpu_to_be32(MTHCA_QP_BIT_SSC);
|
|
if (attr_mask & IB_QP_RETRY_CNT) {
|
|
qp_context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RETRY_COUNT);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
|
|
if (attr->max_rd_atomic) {
|
|
qp_context->params1 |=
|
|
cpu_to_be32(MTHCA_QP_BIT_SRE |
|
|
MTHCA_QP_BIT_SAE);
|
|
qp_context->params1 |=
|
|
cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
|
|
}
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_SRA_MAX);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_SQ_PSN)
|
|
qp_context->next_send_psn = cpu_to_be32(attr->sq_psn);
|
|
qp_context->cqn_snd = cpu_to_be32(to_mcq(ibqp->send_cq)->cqn);
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
qp_context->snd_wqe_base_l = cpu_to_be32(qp->send_wqe_offset);
|
|
qp_context->snd_db_index = cpu_to_be32(qp->sq.db_index);
|
|
}
|
|
|
|
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
|
|
if (attr->max_dest_rd_atomic)
|
|
qp_context->params2 |=
|
|
cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
|
|
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRA_MAX);
|
|
}
|
|
|
|
if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
|
|
qp_context->params2 |= get_hw_access_flags(qp, attr, attr_mask);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RWE |
|
|
MTHCA_QP_OPTPAR_RRE |
|
|
MTHCA_QP_OPTPAR_RAE);
|
|
}
|
|
|
|
qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC);
|
|
|
|
if (ibqp->srq)
|
|
qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RIC);
|
|
|
|
if (attr_mask & IB_QP_MIN_RNR_TIMER) {
|
|
qp_context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RNR_TIMEOUT);
|
|
}
|
|
if (attr_mask & IB_QP_RQ_PSN)
|
|
qp_context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
|
|
|
|
qp_context->ra_buff_indx =
|
|
cpu_to_be32(dev->qp_table.rdb_base +
|
|
((qp->qpn & (dev->limits.num_qps - 1)) * MTHCA_RDB_ENTRY_SIZE <<
|
|
dev->qp_table.rdb_shift));
|
|
|
|
qp_context->cqn_rcv = cpu_to_be32(to_mcq(ibqp->recv_cq)->cqn);
|
|
|
|
if (mthca_is_memfree(dev))
|
|
qp_context->rcv_db_index = cpu_to_be32(qp->rq.db_index);
|
|
|
|
if (attr_mask & IB_QP_QKEY) {
|
|
qp_context->qkey = cpu_to_be32(attr->qkey);
|
|
qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_Q_KEY);
|
|
}
|
|
|
|
if (ibqp->srq)
|
|
qp_context->srqn = cpu_to_be32(1 << 24 |
|
|
to_msrq(ibqp->srq)->srqn);
|
|
|
|
if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD &&
|
|
attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY &&
|
|
attr->en_sqd_async_notify)
|
|
sqd_event = 1 << 31;
|
|
|
|
err = mthca_MODIFY_QP(dev, cur_state, new_state, qp->qpn, 0,
|
|
mailbox, sqd_event, &status);
|
|
if (err)
|
|
goto out_mailbox;
|
|
if (status) {
|
|
mthca_warn(dev, "modify QP %d->%d returned status %02x.\n",
|
|
cur_state, new_state, status);
|
|
err = -EINVAL;
|
|
goto out_mailbox;
|
|
}
|
|
|
|
qp->state = new_state;
|
|
if (attr_mask & IB_QP_ACCESS_FLAGS)
|
|
qp->atomic_rd_en = attr->qp_access_flags;
|
|
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
|
|
qp->resp_depth = attr->max_dest_rd_atomic;
|
|
if (attr_mask & IB_QP_PORT)
|
|
qp->port = attr->port_num;
|
|
if (attr_mask & IB_QP_ALT_PATH)
|
|
qp->alt_port = attr->alt_port_num;
|
|
|
|
if (is_sqp(dev, qp))
|
|
store_attrs(to_msqp(qp), attr, attr_mask);
|
|
|
|
/*
|
|
* If we moved QP0 to RTR, bring the IB link up; if we moved
|
|
* QP0 to RESET or ERROR, bring the link back down.
|
|
*/
|
|
if (is_qp0(dev, qp)) {
|
|
if (cur_state != IB_QPS_RTR &&
|
|
new_state == IB_QPS_RTR)
|
|
init_port(dev, qp->port);
|
|
|
|
if (cur_state != IB_QPS_RESET &&
|
|
cur_state != IB_QPS_ERR &&
|
|
(new_state == IB_QPS_RESET ||
|
|
new_state == IB_QPS_ERR))
|
|
mthca_CLOSE_IB(dev, qp->port, &status);
|
|
}
|
|
|
|
/*
|
|
* If we moved a kernel QP to RESET, clean up all old CQ
|
|
* entries and reinitialize the QP.
|
|
*/
|
|
if (new_state == IB_QPS_RESET && !qp->ibqp.uobject) {
|
|
mthca_cq_clean(dev, to_mcq(qp->ibqp.recv_cq), qp->qpn,
|
|
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
|
|
if (qp->ibqp.send_cq != qp->ibqp.recv_cq)
|
|
mthca_cq_clean(dev, to_mcq(qp->ibqp.send_cq), qp->qpn, NULL);
|
|
|
|
mthca_wq_reset(&qp->sq);
|
|
qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);
|
|
|
|
mthca_wq_reset(&qp->rq);
|
|
qp->rq.last = get_recv_wqe(qp, qp->rq.max - 1);
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
*qp->sq.db = 0;
|
|
*qp->rq.db = 0;
|
|
}
|
|
}
|
|
|
|
out_mailbox:
|
|
mthca_free_mailbox(dev, mailbox);
|
|
|
|
out:
|
|
mutex_unlock(&qp->mutex);
|
|
return err;
|
|
}
|
|
|
|
static int mthca_max_data_size(struct mthca_dev *dev, struct mthca_qp *qp, int desc_sz)
|
|
{
|
|
/*
|
|
* Calculate the maximum size of WQE s/g segments, excluding
|
|
* the next segment and other non-data segments.
|
|
*/
|
|
int max_data_size = desc_sz - sizeof (struct mthca_next_seg);
|
|
|
|
switch (qp->transport) {
|
|
case MLX:
|
|
max_data_size -= 2 * sizeof (struct mthca_data_seg);
|
|
break;
|
|
|
|
case UD:
|
|
if (mthca_is_memfree(dev))
|
|
max_data_size -= sizeof (struct mthca_arbel_ud_seg);
|
|
else
|
|
max_data_size -= sizeof (struct mthca_tavor_ud_seg);
|
|
break;
|
|
|
|
default:
|
|
max_data_size -= sizeof (struct mthca_raddr_seg);
|
|
break;
|
|
}
|
|
|
|
return max_data_size;
|
|
}
|
|
|
|
static inline int mthca_max_inline_data(struct mthca_pd *pd, int max_data_size)
|
|
{
|
|
/* We don't support inline data for kernel QPs (yet). */
|
|
return pd->ibpd.uobject ? max_data_size - MTHCA_INLINE_HEADER_SIZE : 0;
|
|
}
|
|
|
|
static void mthca_adjust_qp_caps(struct mthca_dev *dev,
|
|
struct mthca_pd *pd,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int max_data_size = mthca_max_data_size(dev, qp,
|
|
min(dev->limits.max_desc_sz,
|
|
1 << qp->sq.wqe_shift));
|
|
|
|
qp->max_inline_data = mthca_max_inline_data(pd, max_data_size);
|
|
|
|
qp->sq.max_gs = min_t(int, dev->limits.max_sg,
|
|
max_data_size / sizeof (struct mthca_data_seg));
|
|
qp->rq.max_gs = min_t(int, dev->limits.max_sg,
|
|
(min(dev->limits.max_desc_sz, 1 << qp->rq.wqe_shift) -
|
|
sizeof (struct mthca_next_seg)) /
|
|
sizeof (struct mthca_data_seg));
|
|
}
|
|
|
|
/*
|
|
* Allocate and register buffer for WQEs. qp->rq.max, sq.max,
|
|
* rq.max_gs and sq.max_gs must all be assigned.
|
|
* mthca_alloc_wqe_buf will calculate rq.wqe_shift and
|
|
* sq.wqe_shift (as well as send_wqe_offset, is_direct, and
|
|
* queue)
|
|
*/
|
|
static int mthca_alloc_wqe_buf(struct mthca_dev *dev,
|
|
struct mthca_pd *pd,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int size;
|
|
int err = -ENOMEM;
|
|
|
|
size = sizeof (struct mthca_next_seg) +
|
|
qp->rq.max_gs * sizeof (struct mthca_data_seg);
|
|
|
|
if (size > dev->limits.max_desc_sz)
|
|
return -EINVAL;
|
|
|
|
for (qp->rq.wqe_shift = 6; 1 << qp->rq.wqe_shift < size;
|
|
qp->rq.wqe_shift++)
|
|
; /* nothing */
|
|
|
|
size = qp->sq.max_gs * sizeof (struct mthca_data_seg);
|
|
switch (qp->transport) {
|
|
case MLX:
|
|
size += 2 * sizeof (struct mthca_data_seg);
|
|
break;
|
|
|
|
case UD:
|
|
size += mthca_is_memfree(dev) ?
|
|
sizeof (struct mthca_arbel_ud_seg) :
|
|
sizeof (struct mthca_tavor_ud_seg);
|
|
break;
|
|
|
|
case UC:
|
|
size += sizeof (struct mthca_raddr_seg);
|
|
break;
|
|
|
|
case RC:
|
|
size += sizeof (struct mthca_raddr_seg);
|
|
/*
|
|
* An atomic op will require an atomic segment, a
|
|
* remote address segment and one scatter entry.
|
|
*/
|
|
size = max_t(int, size,
|
|
sizeof (struct mthca_atomic_seg) +
|
|
sizeof (struct mthca_raddr_seg) +
|
|
sizeof (struct mthca_data_seg));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Make sure that we have enough space for a bind request */
|
|
size = max_t(int, size, sizeof (struct mthca_bind_seg));
|
|
|
|
size += sizeof (struct mthca_next_seg);
|
|
|
|
if (size > dev->limits.max_desc_sz)
|
|
return -EINVAL;
|
|
|
|
for (qp->sq.wqe_shift = 6; 1 << qp->sq.wqe_shift < size;
|
|
qp->sq.wqe_shift++)
|
|
; /* nothing */
|
|
|
|
qp->send_wqe_offset = ALIGN(qp->rq.max << qp->rq.wqe_shift,
|
|
1 << qp->sq.wqe_shift);
|
|
|
|
/*
|
|
* If this is a userspace QP, we don't actually have to
|
|
* allocate anything. All we need is to calculate the WQE
|
|
* sizes and the send_wqe_offset, so we're done now.
|
|
*/
|
|
if (pd->ibpd.uobject)
|
|
return 0;
|
|
|
|
size = PAGE_ALIGN(qp->send_wqe_offset +
|
|
(qp->sq.max << qp->sq.wqe_shift));
|
|
|
|
qp->wrid = kmalloc((qp->rq.max + qp->sq.max) * sizeof (u64),
|
|
GFP_KERNEL);
|
|
if (!qp->wrid)
|
|
goto err_out;
|
|
|
|
err = mthca_buf_alloc(dev, size, MTHCA_MAX_DIRECT_QP_SIZE,
|
|
&qp->queue, &qp->is_direct, pd, 0, &qp->mr);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
return 0;
|
|
|
|
err_out:
|
|
kfree(qp->wrid);
|
|
return err;
|
|
}
|
|
|
|
static void mthca_free_wqe_buf(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
mthca_buf_free(dev, PAGE_ALIGN(qp->send_wqe_offset +
|
|
(qp->sq.max << qp->sq.wqe_shift)),
|
|
&qp->queue, qp->is_direct, &qp->mr);
|
|
kfree(qp->wrid);
|
|
}
|
|
|
|
static int mthca_map_memfree(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int ret;
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
ret = mthca_table_get(dev, dev->qp_table.qp_table, qp->qpn);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mthca_table_get(dev, dev->qp_table.eqp_table, qp->qpn);
|
|
if (ret)
|
|
goto err_qpc;
|
|
|
|
ret = mthca_table_get(dev, dev->qp_table.rdb_table,
|
|
qp->qpn << dev->qp_table.rdb_shift);
|
|
if (ret)
|
|
goto err_eqpc;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_eqpc:
|
|
mthca_table_put(dev, dev->qp_table.eqp_table, qp->qpn);
|
|
|
|
err_qpc:
|
|
mthca_table_put(dev, dev->qp_table.qp_table, qp->qpn);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mthca_unmap_memfree(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
mthca_table_put(dev, dev->qp_table.rdb_table,
|
|
qp->qpn << dev->qp_table.rdb_shift);
|
|
mthca_table_put(dev, dev->qp_table.eqp_table, qp->qpn);
|
|
mthca_table_put(dev, dev->qp_table.qp_table, qp->qpn);
|
|
}
|
|
|
|
static int mthca_alloc_memfree(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
qp->rq.db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_RQ,
|
|
qp->qpn, &qp->rq.db);
|
|
if (qp->rq.db_index < 0)
|
|
return ret;
|
|
|
|
qp->sq.db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_SQ,
|
|
qp->qpn, &qp->sq.db);
|
|
if (qp->sq.db_index < 0)
|
|
mthca_free_db(dev, MTHCA_DB_TYPE_RQ, qp->rq.db_index);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mthca_free_memfree(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
if (mthca_is_memfree(dev)) {
|
|
mthca_free_db(dev, MTHCA_DB_TYPE_SQ, qp->sq.db_index);
|
|
mthca_free_db(dev, MTHCA_DB_TYPE_RQ, qp->rq.db_index);
|
|
}
|
|
}
|
|
|
|
static int mthca_alloc_qp_common(struct mthca_dev *dev,
|
|
struct mthca_pd *pd,
|
|
struct mthca_cq *send_cq,
|
|
struct mthca_cq *recv_cq,
|
|
enum ib_sig_type send_policy,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
qp->refcount = 1;
|
|
init_waitqueue_head(&qp->wait);
|
|
mutex_init(&qp->mutex);
|
|
qp->state = IB_QPS_RESET;
|
|
qp->atomic_rd_en = 0;
|
|
qp->resp_depth = 0;
|
|
qp->sq_policy = send_policy;
|
|
mthca_wq_reset(&qp->sq);
|
|
mthca_wq_reset(&qp->rq);
|
|
|
|
spin_lock_init(&qp->sq.lock);
|
|
spin_lock_init(&qp->rq.lock);
|
|
|
|
ret = mthca_map_memfree(dev, qp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mthca_alloc_wqe_buf(dev, pd, qp);
|
|
if (ret) {
|
|
mthca_unmap_memfree(dev, qp);
|
|
return ret;
|
|
}
|
|
|
|
mthca_adjust_qp_caps(dev, pd, qp);
|
|
|
|
/*
|
|
* If this is a userspace QP, we're done now. The doorbells
|
|
* will be allocated and buffers will be initialized in
|
|
* userspace.
|
|
*/
|
|
if (pd->ibpd.uobject)
|
|
return 0;
|
|
|
|
ret = mthca_alloc_memfree(dev, qp);
|
|
if (ret) {
|
|
mthca_free_wqe_buf(dev, qp);
|
|
mthca_unmap_memfree(dev, qp);
|
|
return ret;
|
|
}
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
struct mthca_next_seg *next;
|
|
struct mthca_data_seg *scatter;
|
|
int size = (sizeof (struct mthca_next_seg) +
|
|
qp->rq.max_gs * sizeof (struct mthca_data_seg)) / 16;
|
|
|
|
for (i = 0; i < qp->rq.max; ++i) {
|
|
next = get_recv_wqe(qp, i);
|
|
next->nda_op = cpu_to_be32(((i + 1) & (qp->rq.max - 1)) <<
|
|
qp->rq.wqe_shift);
|
|
next->ee_nds = cpu_to_be32(size);
|
|
|
|
for (scatter = (void *) (next + 1);
|
|
(void *) scatter < (void *) next + (1 << qp->rq.wqe_shift);
|
|
++scatter)
|
|
scatter->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
|
|
}
|
|
|
|
for (i = 0; i < qp->sq.max; ++i) {
|
|
next = get_send_wqe(qp, i);
|
|
next->nda_op = cpu_to_be32((((i + 1) & (qp->sq.max - 1)) <<
|
|
qp->sq.wqe_shift) +
|
|
qp->send_wqe_offset);
|
|
}
|
|
}
|
|
|
|
qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);
|
|
qp->rq.last = get_recv_wqe(qp, qp->rq.max - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mthca_set_qp_size(struct mthca_dev *dev, struct ib_qp_cap *cap,
|
|
struct mthca_pd *pd, struct mthca_qp *qp)
|
|
{
|
|
int max_data_size = mthca_max_data_size(dev, qp, dev->limits.max_desc_sz);
|
|
|
|
/* Sanity check QP size before proceeding */
|
|
if (cap->max_send_wr > dev->limits.max_wqes ||
|
|
cap->max_recv_wr > dev->limits.max_wqes ||
|
|
cap->max_send_sge > dev->limits.max_sg ||
|
|
cap->max_recv_sge > dev->limits.max_sg ||
|
|
cap->max_inline_data > mthca_max_inline_data(pd, max_data_size))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* For MLX transport we need 2 extra S/G entries:
|
|
* one for the header and one for the checksum at the end
|
|
*/
|
|
if (qp->transport == MLX && cap->max_recv_sge + 2 > dev->limits.max_sg)
|
|
return -EINVAL;
|
|
|
|
if (mthca_is_memfree(dev)) {
|
|
qp->rq.max = cap->max_recv_wr ?
|
|
roundup_pow_of_two(cap->max_recv_wr) : 0;
|
|
qp->sq.max = cap->max_send_wr ?
|
|
roundup_pow_of_two(cap->max_send_wr) : 0;
|
|
} else {
|
|
qp->rq.max = cap->max_recv_wr;
|
|
qp->sq.max = cap->max_send_wr;
|
|
}
|
|
|
|
qp->rq.max_gs = cap->max_recv_sge;
|
|
qp->sq.max_gs = max_t(int, cap->max_send_sge,
|
|
ALIGN(cap->max_inline_data + MTHCA_INLINE_HEADER_SIZE,
|
|
MTHCA_INLINE_CHUNK_SIZE) /
|
|
sizeof (struct mthca_data_seg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mthca_alloc_qp(struct mthca_dev *dev,
|
|
struct mthca_pd *pd,
|
|
struct mthca_cq *send_cq,
|
|
struct mthca_cq *recv_cq,
|
|
enum ib_qp_type type,
|
|
enum ib_sig_type send_policy,
|
|
struct ib_qp_cap *cap,
|
|
struct mthca_qp *qp)
|
|
{
|
|
int err;
|
|
|
|
switch (type) {
|
|
case IB_QPT_RC: qp->transport = RC; break;
|
|
case IB_QPT_UC: qp->transport = UC; break;
|
|
case IB_QPT_UD: qp->transport = UD; break;
|
|
default: return -EINVAL;
|
|
}
|
|
|
|
err = mthca_set_qp_size(dev, cap, pd, qp);
|
|
if (err)
|
|
return err;
|
|
|
|
qp->qpn = mthca_alloc(&dev->qp_table.alloc);
|
|
if (qp->qpn == -1)
|
|
return -ENOMEM;
|
|
|
|
/* initialize port to zero for error-catching. */
|
|
qp->port = 0;
|
|
|
|
err = mthca_alloc_qp_common(dev, pd, send_cq, recv_cq,
|
|
send_policy, qp);
|
|
if (err) {
|
|
mthca_free(&dev->qp_table.alloc, qp->qpn);
|
|
return err;
|
|
}
|
|
|
|
spin_lock_irq(&dev->qp_table.lock);
|
|
mthca_array_set(&dev->qp_table.qp,
|
|
qp->qpn & (dev->limits.num_qps - 1), qp);
|
|
spin_unlock_irq(&dev->qp_table.lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mthca_lock_cqs(struct mthca_cq *send_cq, struct mthca_cq *recv_cq)
|
|
{
|
|
if (send_cq == recv_cq)
|
|
spin_lock_irq(&send_cq->lock);
|
|
else if (send_cq->cqn < recv_cq->cqn) {
|
|
spin_lock_irq(&send_cq->lock);
|
|
spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
|
|
} else {
|
|
spin_lock_irq(&recv_cq->lock);
|
|
spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
|
|
}
|
|
}
|
|
|
|
static void mthca_unlock_cqs(struct mthca_cq *send_cq, struct mthca_cq *recv_cq)
|
|
{
|
|
if (send_cq == recv_cq)
|
|
spin_unlock_irq(&send_cq->lock);
|
|
else if (send_cq->cqn < recv_cq->cqn) {
|
|
spin_unlock(&recv_cq->lock);
|
|
spin_unlock_irq(&send_cq->lock);
|
|
} else {
|
|
spin_unlock(&send_cq->lock);
|
|
spin_unlock_irq(&recv_cq->lock);
|
|
}
|
|
}
|
|
|
|
int mthca_alloc_sqp(struct mthca_dev *dev,
|
|
struct mthca_pd *pd,
|
|
struct mthca_cq *send_cq,
|
|
struct mthca_cq *recv_cq,
|
|
enum ib_sig_type send_policy,
|
|
struct ib_qp_cap *cap,
|
|
int qpn,
|
|
int port,
|
|
struct mthca_sqp *sqp)
|
|
{
|
|
u32 mqpn = qpn * 2 + dev->qp_table.sqp_start + port - 1;
|
|
int err;
|
|
|
|
sqp->qp.transport = MLX;
|
|
err = mthca_set_qp_size(dev, cap, pd, &sqp->qp);
|
|
if (err)
|
|
return err;
|
|
|
|
sqp->header_buf_size = sqp->qp.sq.max * MTHCA_UD_HEADER_SIZE;
|
|
sqp->header_buf = dma_alloc_coherent(&dev->pdev->dev, sqp->header_buf_size,
|
|
&sqp->header_dma, GFP_KERNEL);
|
|
if (!sqp->header_buf)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_irq(&dev->qp_table.lock);
|
|
if (mthca_array_get(&dev->qp_table.qp, mqpn))
|
|
err = -EBUSY;
|
|
else
|
|
mthca_array_set(&dev->qp_table.qp, mqpn, sqp);
|
|
spin_unlock_irq(&dev->qp_table.lock);
|
|
|
|
if (err)
|
|
goto err_out;
|
|
|
|
sqp->qp.port = port;
|
|
sqp->qp.qpn = mqpn;
|
|
sqp->qp.transport = MLX;
|
|
|
|
err = mthca_alloc_qp_common(dev, pd, send_cq, recv_cq,
|
|
send_policy, &sqp->qp);
|
|
if (err)
|
|
goto err_out_free;
|
|
|
|
atomic_inc(&pd->sqp_count);
|
|
|
|
return 0;
|
|
|
|
err_out_free:
|
|
/*
|
|
* Lock CQs here, so that CQ polling code can do QP lookup
|
|
* without taking a lock.
|
|
*/
|
|
mthca_lock_cqs(send_cq, recv_cq);
|
|
|
|
spin_lock(&dev->qp_table.lock);
|
|
mthca_array_clear(&dev->qp_table.qp, mqpn);
|
|
spin_unlock(&dev->qp_table.lock);
|
|
|
|
mthca_unlock_cqs(send_cq, recv_cq);
|
|
|
|
err_out:
|
|
dma_free_coherent(&dev->pdev->dev, sqp->header_buf_size,
|
|
sqp->header_buf, sqp->header_dma);
|
|
|
|
return err;
|
|
}
|
|
|
|
static inline int get_qp_refcount(struct mthca_dev *dev, struct mthca_qp *qp)
|
|
{
|
|
int c;
|
|
|
|
spin_lock_irq(&dev->qp_table.lock);
|
|
c = qp->refcount;
|
|
spin_unlock_irq(&dev->qp_table.lock);
|
|
|
|
return c;
|
|
}
|
|
|
|
void mthca_free_qp(struct mthca_dev *dev,
|
|
struct mthca_qp *qp)
|
|
{
|
|
u8 status;
|
|
struct mthca_cq *send_cq;
|
|
struct mthca_cq *recv_cq;
|
|
|
|
send_cq = to_mcq(qp->ibqp.send_cq);
|
|
recv_cq = to_mcq(qp->ibqp.recv_cq);
|
|
|
|
/*
|
|
* Lock CQs here, so that CQ polling code can do QP lookup
|
|
* without taking a lock.
|
|
*/
|
|
mthca_lock_cqs(send_cq, recv_cq);
|
|
|
|
spin_lock(&dev->qp_table.lock);
|
|
mthca_array_clear(&dev->qp_table.qp,
|
|
qp->qpn & (dev->limits.num_qps - 1));
|
|
--qp->refcount;
|
|
spin_unlock(&dev->qp_table.lock);
|
|
|
|
mthca_unlock_cqs(send_cq, recv_cq);
|
|
|
|
wait_event(qp->wait, !get_qp_refcount(dev, qp));
|
|
|
|
if (qp->state != IB_QPS_RESET)
|
|
mthca_MODIFY_QP(dev, qp->state, IB_QPS_RESET, qp->qpn, 0,
|
|
NULL, 0, &status);
|
|
|
|
/*
|
|
* If this is a userspace QP, the buffers, MR, CQs and so on
|
|
* will be cleaned up in userspace, so all we have to do is
|
|
* unref the mem-free tables and free the QPN in our table.
|
|
*/
|
|
if (!qp->ibqp.uobject) {
|
|
mthca_cq_clean(dev, to_mcq(qp->ibqp.send_cq), qp->qpn,
|
|
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
|
|
if (qp->ibqp.send_cq != qp->ibqp.recv_cq)
|
|
mthca_cq_clean(dev, to_mcq(qp->ibqp.recv_cq), qp->qpn,
|
|
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
|
|
|
|
mthca_free_memfree(dev, qp);
|
|
mthca_free_wqe_buf(dev, qp);
|
|
}
|
|
|
|
mthca_unmap_memfree(dev, qp);
|
|
|
|
if (is_sqp(dev, qp)) {
|
|
atomic_dec(&(to_mpd(qp->ibqp.pd)->sqp_count));
|
|
dma_free_coherent(&dev->pdev->dev,
|
|
to_msqp(qp)->header_buf_size,
|
|
to_msqp(qp)->header_buf,
|
|
to_msqp(qp)->header_dma);
|
|
} else
|
|
mthca_free(&dev->qp_table.alloc, qp->qpn);
|
|
}
|
|
|
|
/* Create UD header for an MLX send and build a data segment for it */
|
|
static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp,
|
|
int ind, struct ib_send_wr *wr,
|
|
struct mthca_mlx_seg *mlx,
|
|
struct mthca_data_seg *data)
|
|
{
|
|
int header_size;
|
|
int err;
|
|
u16 pkey;
|
|
|
|
ib_ud_header_init(256, /* assume a MAD */
|
|
mthca_ah_grh_present(to_mah(wr->wr.ud.ah)),
|
|
&sqp->ud_header);
|
|
|
|
err = mthca_read_ah(dev, to_mah(wr->wr.ud.ah), &sqp->ud_header);
|
|
if (err)
|
|
return err;
|
|
mlx->flags &= ~cpu_to_be32(MTHCA_NEXT_SOLICIT | 1);
|
|
mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MTHCA_MLX_VL15 : 0) |
|
|
(sqp->ud_header.lrh.destination_lid ==
|
|
IB_LID_PERMISSIVE ? MTHCA_MLX_SLR : 0) |
|
|
(sqp->ud_header.lrh.service_level << 8));
|
|
mlx->rlid = sqp->ud_header.lrh.destination_lid;
|
|
mlx->vcrc = 0;
|
|
|
|
switch (wr->opcode) {
|
|
case IB_WR_SEND:
|
|
sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY;
|
|
sqp->ud_header.immediate_present = 0;
|
|
break;
|
|
case IB_WR_SEND_WITH_IMM:
|
|
sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE;
|
|
sqp->ud_header.immediate_present = 1;
|
|
sqp->ud_header.immediate_data = wr->imm_data;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : 0;
|
|
if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE)
|
|
sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE;
|
|
sqp->ud_header.bth.solicited_event = !!(wr->send_flags & IB_SEND_SOLICITED);
|
|
if (!sqp->qp.ibqp.qp_num)
|
|
ib_get_cached_pkey(&dev->ib_dev, sqp->qp.port,
|
|
sqp->pkey_index, &pkey);
|
|
else
|
|
ib_get_cached_pkey(&dev->ib_dev, sqp->qp.port,
|
|
wr->wr.ud.pkey_index, &pkey);
|
|
sqp->ud_header.bth.pkey = cpu_to_be16(pkey);
|
|
sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->wr.ud.remote_qpn);
|
|
sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
|
|
sqp->ud_header.deth.qkey = cpu_to_be32(wr->wr.ud.remote_qkey & 0x80000000 ?
|
|
sqp->qkey : wr->wr.ud.remote_qkey);
|
|
sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num);
|
|
|
|
header_size = ib_ud_header_pack(&sqp->ud_header,
|
|
sqp->header_buf +
|
|
ind * MTHCA_UD_HEADER_SIZE);
|
|
|
|
data->byte_count = cpu_to_be32(header_size);
|
|
data->lkey = cpu_to_be32(to_mpd(sqp->qp.ibqp.pd)->ntmr.ibmr.lkey);
|
|
data->addr = cpu_to_be64(sqp->header_dma +
|
|
ind * MTHCA_UD_HEADER_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int mthca_wq_overflow(struct mthca_wq *wq, int nreq,
|
|
struct ib_cq *ib_cq)
|
|
{
|
|
unsigned cur;
|
|
struct mthca_cq *cq;
|
|
|
|
cur = wq->head - wq->tail;
|
|
if (likely(cur + nreq < wq->max))
|
|
return 0;
|
|
|
|
cq = to_mcq(ib_cq);
|
|
spin_lock(&cq->lock);
|
|
cur = wq->head - wq->tail;
|
|
spin_unlock(&cq->lock);
|
|
|
|
return cur + nreq >= wq->max;
|
|
}
|
|
|
|
int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
void *wqe;
|
|
void *prev_wqe;
|
|
unsigned long flags;
|
|
int err = 0;
|
|
int nreq;
|
|
int i;
|
|
int size;
|
|
int size0 = 0;
|
|
u32 f0;
|
|
int ind;
|
|
u8 op0 = 0;
|
|
|
|
spin_lock_irqsave(&qp->sq.lock, flags);
|
|
|
|
/* XXX check that state is OK to post send */
|
|
|
|
ind = qp->sq.next_ind;
|
|
|
|
for (nreq = 0; wr; ++nreq, wr = wr->next) {
|
|
if (mthca_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
|
|
mthca_err(dev, "SQ %06x full (%u head, %u tail,"
|
|
" %d max, %d nreq)\n", qp->qpn,
|
|
qp->sq.head, qp->sq.tail,
|
|
qp->sq.max, nreq);
|
|
err = -ENOMEM;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
wqe = get_send_wqe(qp, ind);
|
|
prev_wqe = qp->sq.last;
|
|
qp->sq.last = wqe;
|
|
|
|
((struct mthca_next_seg *) wqe)->nda_op = 0;
|
|
((struct mthca_next_seg *) wqe)->ee_nds = 0;
|
|
((struct mthca_next_seg *) wqe)->flags =
|
|
((wr->send_flags & IB_SEND_SIGNALED) ?
|
|
cpu_to_be32(MTHCA_NEXT_CQ_UPDATE) : 0) |
|
|
((wr->send_flags & IB_SEND_SOLICITED) ?
|
|
cpu_to_be32(MTHCA_NEXT_SOLICIT) : 0) |
|
|
cpu_to_be32(1);
|
|
if (wr->opcode == IB_WR_SEND_WITH_IMM ||
|
|
wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
|
|
((struct mthca_next_seg *) wqe)->imm = wr->imm_data;
|
|
|
|
wqe += sizeof (struct mthca_next_seg);
|
|
size = sizeof (struct mthca_next_seg) / 16;
|
|
|
|
switch (qp->transport) {
|
|
case RC:
|
|
switch (wr->opcode) {
|
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.atomic.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.atomic.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
|
|
if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
|
|
((struct mthca_atomic_seg *) wqe)->swap_add =
|
|
cpu_to_be64(wr->wr.atomic.swap);
|
|
((struct mthca_atomic_seg *) wqe)->compare =
|
|
cpu_to_be64(wr->wr.atomic.compare_add);
|
|
} else {
|
|
((struct mthca_atomic_seg *) wqe)->swap_add =
|
|
cpu_to_be64(wr->wr.atomic.compare_add);
|
|
((struct mthca_atomic_seg *) wqe)->compare = 0;
|
|
}
|
|
|
|
wqe += sizeof (struct mthca_atomic_seg);
|
|
size += (sizeof (struct mthca_raddr_seg) +
|
|
sizeof (struct mthca_atomic_seg)) / 16;
|
|
break;
|
|
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
case IB_WR_RDMA_READ:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.rdma.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.rdma.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
size += sizeof (struct mthca_raddr_seg) / 16;
|
|
break;
|
|
|
|
default:
|
|
/* No extra segments required for sends */
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case UC:
|
|
switch (wr->opcode) {
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.rdma.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.rdma.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
size += sizeof (struct mthca_raddr_seg) / 16;
|
|
break;
|
|
|
|
default:
|
|
/* No extra segments required for sends */
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case UD:
|
|
((struct mthca_tavor_ud_seg *) wqe)->lkey =
|
|
cpu_to_be32(to_mah(wr->wr.ud.ah)->key);
|
|
((struct mthca_tavor_ud_seg *) wqe)->av_addr =
|
|
cpu_to_be64(to_mah(wr->wr.ud.ah)->avdma);
|
|
((struct mthca_tavor_ud_seg *) wqe)->dqpn =
|
|
cpu_to_be32(wr->wr.ud.remote_qpn);
|
|
((struct mthca_tavor_ud_seg *) wqe)->qkey =
|
|
cpu_to_be32(wr->wr.ud.remote_qkey);
|
|
|
|
wqe += sizeof (struct mthca_tavor_ud_seg);
|
|
size += sizeof (struct mthca_tavor_ud_seg) / 16;
|
|
break;
|
|
|
|
case MLX:
|
|
err = build_mlx_header(dev, to_msqp(qp), ind, wr,
|
|
wqe - sizeof (struct mthca_next_seg),
|
|
wqe);
|
|
if (err) {
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
break;
|
|
}
|
|
|
|
if (wr->num_sge > qp->sq.max_gs) {
|
|
mthca_err(dev, "too many gathers\n");
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < wr->num_sge; ++i) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32(wr->sg_list[i].length);
|
|
((struct mthca_data_seg *) wqe)->lkey =
|
|
cpu_to_be32(wr->sg_list[i].lkey);
|
|
((struct mthca_data_seg *) wqe)->addr =
|
|
cpu_to_be64(wr->sg_list[i].addr);
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
}
|
|
|
|
/* Add one more inline data segment for ICRC */
|
|
if (qp->transport == MLX) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32((1 << 31) | 4);
|
|
((u32 *) wqe)[1] = 0;
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
}
|
|
|
|
qp->wrid[ind + qp->rq.max] = wr->wr_id;
|
|
|
|
if (wr->opcode >= ARRAY_SIZE(mthca_opcode)) {
|
|
mthca_err(dev, "opcode invalid\n");
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
((struct mthca_next_seg *) prev_wqe)->nda_op =
|
|
cpu_to_be32(((ind << qp->sq.wqe_shift) +
|
|
qp->send_wqe_offset) |
|
|
mthca_opcode[wr->opcode]);
|
|
wmb();
|
|
((struct mthca_next_seg *) prev_wqe)->ee_nds =
|
|
cpu_to_be32((size0 ? 0 : MTHCA_NEXT_DBD) | size |
|
|
((wr->send_flags & IB_SEND_FENCE) ?
|
|
MTHCA_NEXT_FENCE : 0));
|
|
|
|
if (!size0) {
|
|
size0 = size;
|
|
op0 = mthca_opcode[wr->opcode];
|
|
f0 = wr->send_flags & IB_SEND_FENCE ?
|
|
MTHCA_SEND_DOORBELL_FENCE : 0;
|
|
}
|
|
|
|
++ind;
|
|
if (unlikely(ind >= qp->sq.max))
|
|
ind -= qp->sq.max;
|
|
}
|
|
|
|
out:
|
|
if (likely(nreq)) {
|
|
__be32 doorbell[2];
|
|
|
|
doorbell[0] = cpu_to_be32(((qp->sq.next_ind << qp->sq.wqe_shift) +
|
|
qp->send_wqe_offset) | f0 | op0);
|
|
doorbell[1] = cpu_to_be32((qp->qpn << 8) | size0);
|
|
|
|
wmb();
|
|
|
|
mthca_write64(doorbell,
|
|
dev->kar + MTHCA_SEND_DOORBELL,
|
|
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
|
|
/*
|
|
* Make sure doorbells don't leak out of SQ spinlock
|
|
* and reach the HCA out of order:
|
|
*/
|
|
mmiowb();
|
|
}
|
|
|
|
qp->sq.next_ind = ind;
|
|
qp->sq.head += nreq;
|
|
|
|
spin_unlock_irqrestore(&qp->sq.lock, flags);
|
|
return err;
|
|
}
|
|
|
|
int mthca_tavor_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
__be32 doorbell[2];
|
|
unsigned long flags;
|
|
int err = 0;
|
|
int nreq;
|
|
int i;
|
|
int size;
|
|
int size0 = 0;
|
|
int ind;
|
|
void *wqe;
|
|
void *prev_wqe;
|
|
|
|
spin_lock_irqsave(&qp->rq.lock, flags);
|
|
|
|
/* XXX check that state is OK to post receive */
|
|
|
|
ind = qp->rq.next_ind;
|
|
|
|
for (nreq = 0; wr; wr = wr->next) {
|
|
if (mthca_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
|
|
mthca_err(dev, "RQ %06x full (%u head, %u tail,"
|
|
" %d max, %d nreq)\n", qp->qpn,
|
|
qp->rq.head, qp->rq.tail,
|
|
qp->rq.max, nreq);
|
|
err = -ENOMEM;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
wqe = get_recv_wqe(qp, ind);
|
|
prev_wqe = qp->rq.last;
|
|
qp->rq.last = wqe;
|
|
|
|
((struct mthca_next_seg *) wqe)->nda_op = 0;
|
|
((struct mthca_next_seg *) wqe)->ee_nds =
|
|
cpu_to_be32(MTHCA_NEXT_DBD);
|
|
((struct mthca_next_seg *) wqe)->flags = 0;
|
|
|
|
wqe += sizeof (struct mthca_next_seg);
|
|
size = sizeof (struct mthca_next_seg) / 16;
|
|
|
|
if (unlikely(wr->num_sge > qp->rq.max_gs)) {
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < wr->num_sge; ++i) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32(wr->sg_list[i].length);
|
|
((struct mthca_data_seg *) wqe)->lkey =
|
|
cpu_to_be32(wr->sg_list[i].lkey);
|
|
((struct mthca_data_seg *) wqe)->addr =
|
|
cpu_to_be64(wr->sg_list[i].addr);
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
}
|
|
|
|
qp->wrid[ind] = wr->wr_id;
|
|
|
|
((struct mthca_next_seg *) prev_wqe)->nda_op =
|
|
cpu_to_be32((ind << qp->rq.wqe_shift) | 1);
|
|
wmb();
|
|
((struct mthca_next_seg *) prev_wqe)->ee_nds =
|
|
cpu_to_be32(MTHCA_NEXT_DBD | size);
|
|
|
|
if (!size0)
|
|
size0 = size;
|
|
|
|
++ind;
|
|
if (unlikely(ind >= qp->rq.max))
|
|
ind -= qp->rq.max;
|
|
|
|
++nreq;
|
|
if (unlikely(nreq == MTHCA_TAVOR_MAX_WQES_PER_RECV_DB)) {
|
|
nreq = 0;
|
|
|
|
doorbell[0] = cpu_to_be32((qp->rq.next_ind << qp->rq.wqe_shift) | size0);
|
|
doorbell[1] = cpu_to_be32(qp->qpn << 8);
|
|
|
|
wmb();
|
|
|
|
mthca_write64(doorbell,
|
|
dev->kar + MTHCA_RECEIVE_DOORBELL,
|
|
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
|
|
|
|
qp->rq.head += MTHCA_TAVOR_MAX_WQES_PER_RECV_DB;
|
|
size0 = 0;
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (likely(nreq)) {
|
|
doorbell[0] = cpu_to_be32((qp->rq.next_ind << qp->rq.wqe_shift) | size0);
|
|
doorbell[1] = cpu_to_be32((qp->qpn << 8) | nreq);
|
|
|
|
wmb();
|
|
|
|
mthca_write64(doorbell,
|
|
dev->kar + MTHCA_RECEIVE_DOORBELL,
|
|
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
|
|
}
|
|
|
|
qp->rq.next_ind = ind;
|
|
qp->rq.head += nreq;
|
|
|
|
/*
|
|
* Make sure doorbells don't leak out of RQ spinlock and reach
|
|
* the HCA out of order:
|
|
*/
|
|
mmiowb();
|
|
|
|
spin_unlock_irqrestore(&qp->rq.lock, flags);
|
|
return err;
|
|
}
|
|
|
|
int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
__be32 doorbell[2];
|
|
void *wqe;
|
|
void *prev_wqe;
|
|
unsigned long flags;
|
|
int err = 0;
|
|
int nreq;
|
|
int i;
|
|
int size;
|
|
int size0 = 0;
|
|
u32 f0;
|
|
int ind;
|
|
u8 op0 = 0;
|
|
|
|
spin_lock_irqsave(&qp->sq.lock, flags);
|
|
|
|
/* XXX check that state is OK to post send */
|
|
|
|
ind = qp->sq.head & (qp->sq.max - 1);
|
|
|
|
for (nreq = 0; wr; ++nreq, wr = wr->next) {
|
|
if (unlikely(nreq == MTHCA_ARBEL_MAX_WQES_PER_SEND_DB)) {
|
|
nreq = 0;
|
|
|
|
doorbell[0] = cpu_to_be32((MTHCA_ARBEL_MAX_WQES_PER_SEND_DB << 24) |
|
|
((qp->sq.head & 0xffff) << 8) |
|
|
f0 | op0);
|
|
doorbell[1] = cpu_to_be32((qp->qpn << 8) | size0);
|
|
|
|
qp->sq.head += MTHCA_ARBEL_MAX_WQES_PER_SEND_DB;
|
|
size0 = 0;
|
|
|
|
/*
|
|
* Make sure that descriptors are written before
|
|
* doorbell record.
|
|
*/
|
|
wmb();
|
|
*qp->sq.db = cpu_to_be32(qp->sq.head & 0xffff);
|
|
|
|
/*
|
|
* Make sure doorbell record is written before we
|
|
* write MMIO send doorbell.
|
|
*/
|
|
wmb();
|
|
mthca_write64(doorbell,
|
|
dev->kar + MTHCA_SEND_DOORBELL,
|
|
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
|
|
}
|
|
|
|
if (mthca_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
|
|
mthca_err(dev, "SQ %06x full (%u head, %u tail,"
|
|
" %d max, %d nreq)\n", qp->qpn,
|
|
qp->sq.head, qp->sq.tail,
|
|
qp->sq.max, nreq);
|
|
err = -ENOMEM;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
wqe = get_send_wqe(qp, ind);
|
|
prev_wqe = qp->sq.last;
|
|
qp->sq.last = wqe;
|
|
|
|
((struct mthca_next_seg *) wqe)->flags =
|
|
((wr->send_flags & IB_SEND_SIGNALED) ?
|
|
cpu_to_be32(MTHCA_NEXT_CQ_UPDATE) : 0) |
|
|
((wr->send_flags & IB_SEND_SOLICITED) ?
|
|
cpu_to_be32(MTHCA_NEXT_SOLICIT) : 0) |
|
|
cpu_to_be32(1);
|
|
if (wr->opcode == IB_WR_SEND_WITH_IMM ||
|
|
wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
|
|
((struct mthca_next_seg *) wqe)->imm = wr->imm_data;
|
|
|
|
wqe += sizeof (struct mthca_next_seg);
|
|
size = sizeof (struct mthca_next_seg) / 16;
|
|
|
|
switch (qp->transport) {
|
|
case RC:
|
|
switch (wr->opcode) {
|
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.atomic.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.atomic.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
|
|
if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
|
|
((struct mthca_atomic_seg *) wqe)->swap_add =
|
|
cpu_to_be64(wr->wr.atomic.swap);
|
|
((struct mthca_atomic_seg *) wqe)->compare =
|
|
cpu_to_be64(wr->wr.atomic.compare_add);
|
|
} else {
|
|
((struct mthca_atomic_seg *) wqe)->swap_add =
|
|
cpu_to_be64(wr->wr.atomic.compare_add);
|
|
((struct mthca_atomic_seg *) wqe)->compare = 0;
|
|
}
|
|
|
|
wqe += sizeof (struct mthca_atomic_seg);
|
|
size += (sizeof (struct mthca_raddr_seg) +
|
|
sizeof (struct mthca_atomic_seg)) / 16;
|
|
break;
|
|
|
|
case IB_WR_RDMA_READ:
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.rdma.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.rdma.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
size += sizeof (struct mthca_raddr_seg) / 16;
|
|
break;
|
|
|
|
default:
|
|
/* No extra segments required for sends */
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case UC:
|
|
switch (wr->opcode) {
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
((struct mthca_raddr_seg *) wqe)->raddr =
|
|
cpu_to_be64(wr->wr.rdma.remote_addr);
|
|
((struct mthca_raddr_seg *) wqe)->rkey =
|
|
cpu_to_be32(wr->wr.rdma.rkey);
|
|
((struct mthca_raddr_seg *) wqe)->reserved = 0;
|
|
wqe += sizeof (struct mthca_raddr_seg);
|
|
size += sizeof (struct mthca_raddr_seg) / 16;
|
|
break;
|
|
|
|
default:
|
|
/* No extra segments required for sends */
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case UD:
|
|
memcpy(((struct mthca_arbel_ud_seg *) wqe)->av,
|
|
to_mah(wr->wr.ud.ah)->av, MTHCA_AV_SIZE);
|
|
((struct mthca_arbel_ud_seg *) wqe)->dqpn =
|
|
cpu_to_be32(wr->wr.ud.remote_qpn);
|
|
((struct mthca_arbel_ud_seg *) wqe)->qkey =
|
|
cpu_to_be32(wr->wr.ud.remote_qkey);
|
|
|
|
wqe += sizeof (struct mthca_arbel_ud_seg);
|
|
size += sizeof (struct mthca_arbel_ud_seg) / 16;
|
|
break;
|
|
|
|
case MLX:
|
|
err = build_mlx_header(dev, to_msqp(qp), ind, wr,
|
|
wqe - sizeof (struct mthca_next_seg),
|
|
wqe);
|
|
if (err) {
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
break;
|
|
}
|
|
|
|
if (wr->num_sge > qp->sq.max_gs) {
|
|
mthca_err(dev, "too many gathers\n");
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < wr->num_sge; ++i) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32(wr->sg_list[i].length);
|
|
((struct mthca_data_seg *) wqe)->lkey =
|
|
cpu_to_be32(wr->sg_list[i].lkey);
|
|
((struct mthca_data_seg *) wqe)->addr =
|
|
cpu_to_be64(wr->sg_list[i].addr);
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
}
|
|
|
|
/* Add one more inline data segment for ICRC */
|
|
if (qp->transport == MLX) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32((1 << 31) | 4);
|
|
((u32 *) wqe)[1] = 0;
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
size += sizeof (struct mthca_data_seg) / 16;
|
|
}
|
|
|
|
qp->wrid[ind + qp->rq.max] = wr->wr_id;
|
|
|
|
if (wr->opcode >= ARRAY_SIZE(mthca_opcode)) {
|
|
mthca_err(dev, "opcode invalid\n");
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
((struct mthca_next_seg *) prev_wqe)->nda_op =
|
|
cpu_to_be32(((ind << qp->sq.wqe_shift) +
|
|
qp->send_wqe_offset) |
|
|
mthca_opcode[wr->opcode]);
|
|
wmb();
|
|
((struct mthca_next_seg *) prev_wqe)->ee_nds =
|
|
cpu_to_be32(MTHCA_NEXT_DBD | size |
|
|
((wr->send_flags & IB_SEND_FENCE) ?
|
|
MTHCA_NEXT_FENCE : 0));
|
|
|
|
if (!size0) {
|
|
size0 = size;
|
|
op0 = mthca_opcode[wr->opcode];
|
|
f0 = wr->send_flags & IB_SEND_FENCE ?
|
|
MTHCA_SEND_DOORBELL_FENCE : 0;
|
|
}
|
|
|
|
++ind;
|
|
if (unlikely(ind >= qp->sq.max))
|
|
ind -= qp->sq.max;
|
|
}
|
|
|
|
out:
|
|
if (likely(nreq)) {
|
|
doorbell[0] = cpu_to_be32((nreq << 24) |
|
|
((qp->sq.head & 0xffff) << 8) |
|
|
f0 | op0);
|
|
doorbell[1] = cpu_to_be32((qp->qpn << 8) | size0);
|
|
|
|
qp->sq.head += nreq;
|
|
|
|
/*
|
|
* Make sure that descriptors are written before
|
|
* doorbell record.
|
|
*/
|
|
wmb();
|
|
*qp->sq.db = cpu_to_be32(qp->sq.head & 0xffff);
|
|
|
|
/*
|
|
* Make sure doorbell record is written before we
|
|
* write MMIO send doorbell.
|
|
*/
|
|
wmb();
|
|
mthca_write64(doorbell,
|
|
dev->kar + MTHCA_SEND_DOORBELL,
|
|
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
|
|
}
|
|
|
|
/*
|
|
* Make sure doorbells don't leak out of SQ spinlock and reach
|
|
* the HCA out of order:
|
|
*/
|
|
mmiowb();
|
|
|
|
spin_unlock_irqrestore(&qp->sq.lock, flags);
|
|
return err;
|
|
}
|
|
|
|
int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
struct mthca_dev *dev = to_mdev(ibqp->device);
|
|
struct mthca_qp *qp = to_mqp(ibqp);
|
|
unsigned long flags;
|
|
int err = 0;
|
|
int nreq;
|
|
int ind;
|
|
int i;
|
|
void *wqe;
|
|
|
|
spin_lock_irqsave(&qp->rq.lock, flags);
|
|
|
|
/* XXX check that state is OK to post receive */
|
|
|
|
ind = qp->rq.head & (qp->rq.max - 1);
|
|
|
|
for (nreq = 0; wr; ++nreq, wr = wr->next) {
|
|
if (mthca_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
|
|
mthca_err(dev, "RQ %06x full (%u head, %u tail,"
|
|
" %d max, %d nreq)\n", qp->qpn,
|
|
qp->rq.head, qp->rq.tail,
|
|
qp->rq.max, nreq);
|
|
err = -ENOMEM;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
wqe = get_recv_wqe(qp, ind);
|
|
|
|
((struct mthca_next_seg *) wqe)->flags = 0;
|
|
|
|
wqe += sizeof (struct mthca_next_seg);
|
|
|
|
if (unlikely(wr->num_sge > qp->rq.max_gs)) {
|
|
err = -EINVAL;
|
|
*bad_wr = wr;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < wr->num_sge; ++i) {
|
|
((struct mthca_data_seg *) wqe)->byte_count =
|
|
cpu_to_be32(wr->sg_list[i].length);
|
|
((struct mthca_data_seg *) wqe)->lkey =
|
|
cpu_to_be32(wr->sg_list[i].lkey);
|
|
((struct mthca_data_seg *) wqe)->addr =
|
|
cpu_to_be64(wr->sg_list[i].addr);
|
|
wqe += sizeof (struct mthca_data_seg);
|
|
}
|
|
|
|
if (i < qp->rq.max_gs) {
|
|
((struct mthca_data_seg *) wqe)->byte_count = 0;
|
|
((struct mthca_data_seg *) wqe)->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
|
|
((struct mthca_data_seg *) wqe)->addr = 0;
|
|
}
|
|
|
|
qp->wrid[ind] = wr->wr_id;
|
|
|
|
++ind;
|
|
if (unlikely(ind >= qp->rq.max))
|
|
ind -= qp->rq.max;
|
|
}
|
|
out:
|
|
if (likely(nreq)) {
|
|
qp->rq.head += nreq;
|
|
|
|
/*
|
|
* Make sure that descriptors are written before
|
|
* doorbell record.
|
|
*/
|
|
wmb();
|
|
*qp->rq.db = cpu_to_be32(qp->rq.head & 0xffff);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&qp->rq.lock, flags);
|
|
return err;
|
|
}
|
|
|
|
void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
|
|
int index, int *dbd, __be32 *new_wqe)
|
|
{
|
|
struct mthca_next_seg *next;
|
|
|
|
/*
|
|
* For SRQs, all WQEs generate a CQE, so we're always at the
|
|
* end of the doorbell chain.
|
|
*/
|
|
if (qp->ibqp.srq) {
|
|
*new_wqe = 0;
|
|
return;
|
|
}
|
|
|
|
if (is_send)
|
|
next = get_send_wqe(qp, index);
|
|
else
|
|
next = get_recv_wqe(qp, index);
|
|
|
|
*dbd = !!(next->ee_nds & cpu_to_be32(MTHCA_NEXT_DBD));
|
|
if (next->ee_nds & cpu_to_be32(0x3f))
|
|
*new_wqe = (next->nda_op & cpu_to_be32(~0x3f)) |
|
|
(next->ee_nds & cpu_to_be32(0x3f));
|
|
else
|
|
*new_wqe = 0;
|
|
}
|
|
|
|
int mthca_init_qp_table(struct mthca_dev *dev)
|
|
{
|
|
int err;
|
|
u8 status;
|
|
int i;
|
|
|
|
spin_lock_init(&dev->qp_table.lock);
|
|
|
|
/*
|
|
* We reserve 2 extra QPs per port for the special QPs. The
|
|
* special QP for port 1 has to be even, so round up.
|
|
*/
|
|
dev->qp_table.sqp_start = (dev->limits.reserved_qps + 1) & ~1UL;
|
|
err = mthca_alloc_init(&dev->qp_table.alloc,
|
|
dev->limits.num_qps,
|
|
(1 << 24) - 1,
|
|
dev->qp_table.sqp_start +
|
|
MTHCA_MAX_PORTS * 2);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mthca_array_init(&dev->qp_table.qp,
|
|
dev->limits.num_qps);
|
|
if (err) {
|
|
mthca_alloc_cleanup(&dev->qp_table.alloc);
|
|
return err;
|
|
}
|
|
|
|
for (i = 0; i < 2; ++i) {
|
|
err = mthca_CONF_SPECIAL_QP(dev, i ? IB_QPT_GSI : IB_QPT_SMI,
|
|
dev->qp_table.sqp_start + i * 2,
|
|
&status);
|
|
if (err)
|
|
goto err_out;
|
|
if (status) {
|
|
mthca_warn(dev, "CONF_SPECIAL_QP returned "
|
|
"status %02x, aborting.\n",
|
|
status);
|
|
err = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
err_out:
|
|
for (i = 0; i < 2; ++i)
|
|
mthca_CONF_SPECIAL_QP(dev, i, 0, &status);
|
|
|
|
mthca_array_cleanup(&dev->qp_table.qp, dev->limits.num_qps);
|
|
mthca_alloc_cleanup(&dev->qp_table.alloc);
|
|
|
|
return err;
|
|
}
|
|
|
|
void mthca_cleanup_qp_table(struct mthca_dev *dev)
|
|
{
|
|
int i;
|
|
u8 status;
|
|
|
|
for (i = 0; i < 2; ++i)
|
|
mthca_CONF_SPECIAL_QP(dev, i, 0, &status);
|
|
|
|
mthca_array_cleanup(&dev->qp_table.qp, dev->limits.num_qps);
|
|
mthca_alloc_cleanup(&dev->qp_table.alloc);
|
|
}
|