qp.c revision a3cdcbfa8fb1fccfe48d359da86e99546610c562
1225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier/* 2225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * Copyright (c) 2004 Topspin Communications. All rights reserved. 3225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. 451a379d0c8f7a6db7c9e3c9c770d90a6d2d1ef9bJack Morgenstein * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. 5225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * Copyright (c) 2004 Voltaire, Inc. All rights reserved. 6225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * 7225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * This software is available to you under a choice of one of two 8225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * licenses. You may choose to be licensed under the terms of the GNU 9225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * General Public License (GPL) Version 2, available from the file 10225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * COPYING in the main directory of this source tree, or the 11225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * OpenIB.org BSD license below: 12225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * 13225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * Redistribution and use in source and binary forms, with or 14225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * without modification, are permitted provided that the following 15225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * conditions are met: 16225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * 17225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * - Redistributions of source code must retain the above 18225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * copyright notice, this list of conditions and the following 19225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * disclaimer. 20225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * 21225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * - Redistributions in binary form must reproduce the above 22225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * copyright notice, this list of conditions and the following 23225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * disclaimer in the documentation and/or other materials 24225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * provided with the distribution. 25225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * 26225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * SOFTWARE. 34225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier */ 35225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 36225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier#include <linux/init.h> 37225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 38225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier#include <linux/mlx4/cmd.h> 39225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier#include <linux/mlx4/qp.h> 40225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 41225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier#include "mlx4.h" 42225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier#include "icm.h" 43225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 44225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiervoid mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type) 45225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 46225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 47225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp *qp; 48225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 49225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_lock(&qp_table->lock); 50225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 51225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier qp = __mlx4_qp_lookup(dev, qpn); 52225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (qp) 53225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier atomic_inc(&qp->refcount); 54225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 55225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_unlock(&qp_table->lock); 56225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 57225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (!qp) { 58225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_warn(dev, "Async event for bogus QP %08x\n", qpn); 59225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return; 60225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier } 61225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 62225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier qp->event(qp, event_type); 63225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 64225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (atomic_dec_and_test(&qp->refcount)) 65225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier complete(&qp->free); 66225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 67225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 68225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreierint mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 69225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, 70225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar, 71225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier int sqd_event, struct mlx4_qp *qp) 72225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 73225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = { 74225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = { 75225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 76225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 77225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP, 78225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 79225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_INIT] = { 80225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 81225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 82225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP, 83225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP, 84225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 85225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTR] = { 86225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 87225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 88225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP, 89225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 90225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTS] = { 91225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 92225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 93225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP, 94225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP, 95225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 96225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_SQD] = { 97225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 98225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 99225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP, 100225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP, 101225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 102225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_SQER] = { 103225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 104225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 105225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP, 106225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }, 107225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = { 108225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 109225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 110225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier } 111225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier }; 112225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 113225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_cmd_mailbox *mailbox; 114225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier int ret = 0; 115225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 1169ed87fd34c97a998e63505718ce7e107a23c84c3Jack Morgenstein if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE || 117225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier !op[cur_state][new_state]) 118225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return -EINVAL; 119225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 120225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (op[cur_state][new_state] == MLX4_CMD_2RST_QP) 121225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return mlx4_cmd(dev, 0, qp->qpn, 2, 122225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A); 123225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 124225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mailbox = mlx4_alloc_cmd_mailbox(dev); 125225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (IS_ERR(mailbox)) 126225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return PTR_ERR(mailbox); 127225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 128225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) { 129225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier u64 mtt_addr = mlx4_mtt_addr(dev, mtt); 130225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier context->mtt_base_addr_h = mtt_addr >> 32; 131225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); 132225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; 133225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier } 134225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 135225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier *(__be32 *) mailbox->buf = cpu_to_be32(optpar); 136225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier memcpy(mailbox->buf + 8, context, sizeof *context); 137225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 138225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier ((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn = 139225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier cpu_to_be32(qp->qpn); 140225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 141225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier ret = mlx4_cmd(dev, mailbox->dma, qp->qpn | (!!sqd_event << 31), 142225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier new_state == MLX4_QP_STATE_RST ? 2 : 0, 143225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C); 144225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 145225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_free_cmd_mailbox(dev, mailbox); 146225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return ret; 147225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 148225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland DreierEXPORT_SYMBOL_GPL(mlx4_qp_modify); 149225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 150a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilinint mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base) 151a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin{ 152a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin struct mlx4_priv *priv = mlx4_priv(dev); 153a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin struct mlx4_qp_table *qp_table = &priv->qp_table; 154a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin int qpn; 155a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 156a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin qpn = mlx4_bitmap_alloc_range(&qp_table->bitmap, cnt, align); 157a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin if (qpn == -1) 158a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin return -ENOMEM; 159a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 160a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin *base = qpn; 161a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin return 0; 162a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin} 163a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny PetrilinEXPORT_SYMBOL_GPL(mlx4_qp_reserve_range); 164a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 165a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilinvoid mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) 166a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin{ 167a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin struct mlx4_priv *priv = mlx4_priv(dev); 168a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin struct mlx4_qp_table *qp_table = &priv->qp_table; 169a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin if (base_qpn < dev->caps.sqp_start + 8) 170a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin return; 171a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 172a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin mlx4_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt); 173a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin} 174a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny PetrilinEXPORT_SYMBOL_GPL(mlx4_qp_release_range); 175a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 176a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilinint mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp) 177225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 178225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_priv *priv = mlx4_priv(dev); 179225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_table *qp_table = &priv->qp_table; 180225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier int err; 181225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 182a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin if (!qpn) 183a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin return -EINVAL; 184a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin 185a3cdcbfa8fb1fccfe48d359da86e99546610c562Yevgeny Petrilin qp->qpn = qpn; 186225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 187225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_table_get(dev, &qp_table->qp_table, qp->qpn); 188225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 189225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_out; 190225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 191225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_table_get(dev, &qp_table->auxc_table, qp->qpn); 192225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 193225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_put_qp; 194225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 195225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_table_get(dev, &qp_table->altc_table, qp->qpn); 196225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 197225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_put_auxc; 198225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 199225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_table_get(dev, &qp_table->rdmarc_table, qp->qpn); 200225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 201225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_put_altc; 202225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 203225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_table_get(dev, &qp_table->cmpt_table, qp->qpn); 204225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 205225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_put_rdmarc; 206225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 207225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_lock_irq(&qp_table->lock); 208225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = radix_tree_insert(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1), qp); 209225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_unlock_irq(&qp_table->lock); 210225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 211225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier goto err_put_cmpt; 212225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 213225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier atomic_set(&qp->refcount, 1); 214225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier init_completion(&qp->free); 215225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 216225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return 0; 217225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 218225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_put_cmpt: 219225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn); 220225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 221225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_put_rdmarc: 222225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn); 223225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 224225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_put_altc: 225225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->altc_table, qp->qpn); 226225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 227225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_put_auxc: 228225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn); 229225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 230225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_put_qp: 231225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->qp_table, qp->qpn); 232225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 233225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiererr_out: 234225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return err; 235225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 236225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland DreierEXPORT_SYMBOL_GPL(mlx4_qp_alloc); 237225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 238225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiervoid mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp) 239225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 240225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 241225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier unsigned long flags; 242225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 243225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_lock_irqsave(&qp_table->lock, flags); 244225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1)); 245225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_unlock_irqrestore(&qp_table->lock, flags); 246225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 247225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland DreierEXPORT_SYMBOL_GPL(mlx4_qp_remove); 248225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 249225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiervoid mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp) 250225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 251225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 252225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 253225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (atomic_dec_and_test(&qp->refcount)) 254225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier complete(&qp->free); 255225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier wait_for_completion(&qp->free); 256225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 257225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn); 258225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn); 259225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->altc_table, qp->qpn); 260225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn); 261225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_table_put(dev, &qp_table->qp_table, qp->qpn); 262225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 263225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland DreierEXPORT_SYMBOL_GPL(mlx4_qp_free); 264225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 265225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreierstatic int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn) 266225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 267225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP, 268225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier MLX4_CMD_TIME_CLASS_B); 269225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 270225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 2713d73c2884f45f9a297cbc956cea101405a9703f2Roland Dreierint mlx4_init_qp_table(struct mlx4_dev *dev) 272225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 273225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 274225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier int err; 275225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 276225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier spin_lock_init(&qp_table->lock); 277225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC); 278225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 279225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier /* 280225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * We reserve 2 extra QPs per port for the special QPs. The 281225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * block of special QPs must be aligned to a multiple of 8, so 282225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier * round up. 283225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier */ 284225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier dev->caps.sqp_start = ALIGN(dev->caps.reserved_qps, 8); 285225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier err = mlx4_bitmap_init(&qp_table->bitmap, dev->caps.num_qps, 286225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier (1 << 24) - 1, dev->caps.sqp_start + 8); 287225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier if (err) 288225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return err; 289225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 290225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier return mlx4_CONF_SPECIAL_QP(dev, dev->caps.sqp_start); 291225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 292225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier 293225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreiervoid mlx4_cleanup_qp_table(struct mlx4_dev *dev) 294225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier{ 295225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_CONF_SPECIAL_QP(dev, 0); 296225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier mlx4_bitmap_cleanup(&mlx4_priv(dev)->qp_table.bitmap); 297225c7b1feef1b41170f7037a5b10a65cd8a42c54Roland Dreier} 2986a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein 2996a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgensteinint mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp, 3006a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein struct mlx4_qp_context *context) 3016a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein{ 3026a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein struct mlx4_cmd_mailbox *mailbox; 3036a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein int err; 3046a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein 3056a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein mailbox = mlx4_alloc_cmd_mailbox(dev); 3066a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein if (IS_ERR(mailbox)) 3076a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein return PTR_ERR(mailbox); 3086a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein 3096a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein err = mlx4_cmd_box(dev, 0, mailbox->dma, qp->qpn, 0, 3106a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein MLX4_CMD_QUERY_QP, MLX4_CMD_TIME_CLASS_A); 3116a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein if (!err) 3126a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein memcpy(context, mailbox->buf + 8, sizeof *context); 3136a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein 3146a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein mlx4_free_cmd_mailbox(dev, mailbox); 3156a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein return err; 3166a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein} 3176a775e2ba4f7635849ade628e64723ab2beef0bcJack MorgensteinEXPORT_SYMBOL_GPL(mlx4_qp_query); 3186a775e2ba4f7635849ade628e64723ab2beef0bcJack Morgenstein 319ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilinint mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 320ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin struct mlx4_qp_context *context, 321ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin struct mlx4_qp *qp, enum mlx4_qp_state *qp_state) 322ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin{ 323ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin int err; 324ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin int i; 325ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin enum mlx4_qp_state states[] = { 326ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin MLX4_QP_STATE_RST, 327ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin MLX4_QP_STATE_INIT, 328ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin MLX4_QP_STATE_RTR, 329ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin MLX4_QP_STATE_RTS 330ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin }; 331ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin 332ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin for (i = 0; i < ARRAY_SIZE(states) - 1; i++) { 333ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin context->flags &= cpu_to_be32(~(0xf << 28)); 334ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin context->flags |= cpu_to_be32(states[i + 1] << 28); 335ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1], 336ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin context, 0, 0, qp); 337ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin if (err) { 338ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin mlx4_err(dev, "Failed to bring QP to state: " 339ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin "%d with error: %d\n", 340ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin states[i + 1], err); 341ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin return err; 342ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin } 343ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin 344ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin *qp_state = states[i + 1]; 345ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin } 346ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin 347ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin return 0; 348ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny Petrilin} 349ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7Yevgeny PetrilinEXPORT_SYMBOL_GPL(mlx4_qp_to_ready); 350