1219820Sjeff/* 2219820Sjeff * Copyright (c) 2004 Topspin Communications. All rights reserved. 3219820Sjeff * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. 4272027Shselasky * Copyright (c) 2005, 2006, 2007, 2008, 2014 Mellanox Technologies. All rights reserved. 5219820Sjeff * Copyright (c) 2004 Voltaire, Inc. All rights reserved. 6219820Sjeff * 7219820Sjeff * This software is available to you under a choice of one of two 8219820Sjeff * licenses. You may choose to be licensed under the terms of the GNU 9219820Sjeff * General Public License (GPL) Version 2, available from the file 10219820Sjeff * COPYING in the main directory of this source tree, or the 11219820Sjeff * OpenIB.org BSD license below: 12219820Sjeff * 13219820Sjeff * Redistribution and use in source and binary forms, with or 14219820Sjeff * without modification, are permitted provided that the following 15219820Sjeff * conditions are met: 16219820Sjeff * 17219820Sjeff * - Redistributions of source code must retain the above 18219820Sjeff * copyright notice, this list of conditions and the following 19219820Sjeff * disclaimer. 20219820Sjeff * 21219820Sjeff * - Redistributions in binary form must reproduce the above 22219820Sjeff * copyright notice, this list of conditions and the following 23219820Sjeff * disclaimer in the documentation and/or other materials 24219820Sjeff * provided with the distribution. 25219820Sjeff * 26219820Sjeff * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27219820Sjeff * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28219820Sjeff * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29219820Sjeff * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30219820Sjeff * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31219820Sjeff * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32219820Sjeff * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33219820Sjeff * SOFTWARE. 34219820Sjeff */ 35219820Sjeff 36272027Shselasky#include <linux/types.h> 37272027Shselasky#include <linux/gfp.h> 38272027Shselasky#include <linux/module.h> 39272027Shselasky 40306486Shselasky#include <dev/mlx4/cmd.h> 41306486Shselasky#include <dev/mlx4/qp.h> 42219820Sjeff 43219820Sjeff#include "mlx4.h" 44219820Sjeff#include "icm.h" 45219820Sjeff 46329159Shselasky/* QP to support BF should have bits 6,7 cleared */ 47255932Salfred#define MLX4_BF_QP_SKIP_MASK 0xc0 48255932Salfred#define MLX4_MAX_BF_QP_RANGE 0x40 49255932Salfred 50219820Sjeffvoid mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type) 51219820Sjeff{ 52219820Sjeff struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 53219820Sjeff struct mlx4_qp *qp; 54219820Sjeff 55219820Sjeff spin_lock(&qp_table->lock); 56219820Sjeff 57219820Sjeff qp = __mlx4_qp_lookup(dev, qpn); 58219820Sjeff if (qp) 59219820Sjeff atomic_inc(&qp->refcount); 60219820Sjeff 61219820Sjeff spin_unlock(&qp_table->lock); 62219820Sjeff 63219820Sjeff if (!qp) { 64255932Salfred mlx4_dbg(dev, "Async event for none existent QP %08x\n", qpn); 65219820Sjeff return; 66219820Sjeff } 67219820Sjeff 68219820Sjeff qp->event(qp, event_type); 69219820Sjeff 70219820Sjeff if (atomic_dec_and_test(&qp->refcount)) 71219820Sjeff complete(&qp->free); 72219820Sjeff} 73219820Sjeff 74255932Salfred/* used for INIT/CLOSE port logic */ 75255932Salfredstatic int is_master_qp0(struct mlx4_dev *dev, struct mlx4_qp *qp, int *real_qp0, int *proxy_qp0) 76219820Sjeff{ 77255932Salfred /* this procedure is called after we already know we are on the master */ 78255932Salfred /* qp0 is either the proxy qp0, or the real qp0 */ 79255932Salfred u32 pf_proxy_offset = dev->phys_caps.base_proxy_sqpn + 8 * mlx4_master_func_num(dev); 80255932Salfred *proxy_qp0 = qp->qpn >= pf_proxy_offset && qp->qpn <= pf_proxy_offset + 1; 81255932Salfred 82255932Salfred *real_qp0 = qp->qpn >= dev->phys_caps.base_sqpn && 83255932Salfred qp->qpn <= dev->phys_caps.base_sqpn + 1; 84255932Salfred 85255932Salfred return *real_qp0 || *proxy_qp0; 86255932Salfred} 87255932Salfred 88255932Salfredstatic int __mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 89255932Salfred enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, 90255932Salfred struct mlx4_qp_context *context, 91255932Salfred enum mlx4_qp_optpar optpar, 92255932Salfred int sqd_event, struct mlx4_qp *qp, int native) 93255932Salfred{ 94219820Sjeff static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = { 95219820Sjeff [MLX4_QP_STATE_RST] = { 96219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 97219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 98219820Sjeff [MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP, 99219820Sjeff }, 100219820Sjeff [MLX4_QP_STATE_INIT] = { 101219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 102219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 103219820Sjeff [MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP, 104219820Sjeff [MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP, 105219820Sjeff }, 106219820Sjeff [MLX4_QP_STATE_RTR] = { 107219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 108219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 109219820Sjeff [MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP, 110219820Sjeff }, 111219820Sjeff [MLX4_QP_STATE_RTS] = { 112219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 113219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 114219820Sjeff [MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP, 115219820Sjeff [MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP, 116219820Sjeff }, 117219820Sjeff [MLX4_QP_STATE_SQD] = { 118219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 119219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 120219820Sjeff [MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP, 121219820Sjeff [MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP, 122219820Sjeff }, 123219820Sjeff [MLX4_QP_STATE_SQER] = { 124219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 125219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 126219820Sjeff [MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP, 127219820Sjeff }, 128219820Sjeff [MLX4_QP_STATE_ERR] = { 129219820Sjeff [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, 130219820Sjeff [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, 131219820Sjeff } 132219820Sjeff }; 133219820Sjeff 134255932Salfred struct mlx4_priv *priv = mlx4_priv(dev); 135219820Sjeff struct mlx4_cmd_mailbox *mailbox; 136219820Sjeff int ret = 0; 137255932Salfred int real_qp0 = 0; 138255932Salfred int proxy_qp0 = 0; 139255932Salfred u8 port; 140219820Sjeff 141219820Sjeff if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE || 142219820Sjeff !op[cur_state][new_state]) 143219820Sjeff return -EINVAL; 144219820Sjeff 145255932Salfred if (op[cur_state][new_state] == MLX4_CMD_2RST_QP) { 146255932Salfred ret = mlx4_cmd(dev, 0, qp->qpn, 2, 147255932Salfred MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A, native); 148255932Salfred if (mlx4_is_master(dev) && cur_state != MLX4_QP_STATE_ERR && 149255932Salfred cur_state != MLX4_QP_STATE_RST && 150255932Salfred is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) { 151255932Salfred port = (qp->qpn & 1) + 1; 152255932Salfred if (proxy_qp0) 153255932Salfred priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0; 154255932Salfred else 155255932Salfred priv->mfunc.master.qp0_state[port].qp0_active = 0; 156255932Salfred } 157255932Salfred return ret; 158255932Salfred } 159219820Sjeff 160219820Sjeff mailbox = mlx4_alloc_cmd_mailbox(dev); 161219820Sjeff if (IS_ERR(mailbox)) 162219820Sjeff return PTR_ERR(mailbox); 163219820Sjeff 164219820Sjeff if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) { 165219820Sjeff u64 mtt_addr = mlx4_mtt_addr(dev, mtt); 166219820Sjeff context->mtt_base_addr_h = mtt_addr >> 32; 167219820Sjeff context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); 168219820Sjeff context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; 169219820Sjeff } 170219820Sjeff 171329159Shselasky if ((cur_state == MLX4_QP_STATE_RTR) && 172329159Shselasky (new_state == MLX4_QP_STATE_RTS) && 173329159Shselasky dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) 174329159Shselasky context->roce_entropy = 175329159Shselasky cpu_to_be16(mlx4_qp_roce_entropy(dev, qp->qpn)); 176329159Shselasky 177219820Sjeff *(__be32 *) mailbox->buf = cpu_to_be32(optpar); 178219820Sjeff memcpy(mailbox->buf + 8, context, sizeof *context); 179219820Sjeff 180219820Sjeff ((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn = 181219820Sjeff cpu_to_be32(qp->qpn); 182219820Sjeff 183255932Salfred ret = mlx4_cmd(dev, mailbox->dma, 184255932Salfred qp->qpn | (!!sqd_event << 31), 185219820Sjeff new_state == MLX4_QP_STATE_RST ? 2 : 0, 186255932Salfred op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C, native); 187219820Sjeff 188255932Salfred if (mlx4_is_master(dev) && is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) { 189255932Salfred port = (qp->qpn & 1) + 1; 190255932Salfred if (cur_state != MLX4_QP_STATE_ERR && 191255932Salfred cur_state != MLX4_QP_STATE_RST && 192255932Salfred new_state == MLX4_QP_STATE_ERR) { 193255932Salfred if (proxy_qp0) 194255932Salfred priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0; 195255932Salfred else 196255932Salfred priv->mfunc.master.qp0_state[port].qp0_active = 0; 197255932Salfred } else if (new_state == MLX4_QP_STATE_RTR) { 198255932Salfred if (proxy_qp0) 199255932Salfred priv->mfunc.master.qp0_state[port].proxy_qp0_active = 1; 200255932Salfred else 201255932Salfred priv->mfunc.master.qp0_state[port].qp0_active = 1; 202255932Salfred } 203255932Salfred } 204255932Salfred 205219820Sjeff mlx4_free_cmd_mailbox(dev, mailbox); 206219820Sjeff return ret; 207219820Sjeff} 208255932Salfred 209255932Salfredint mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 210255932Salfred enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, 211255932Salfred struct mlx4_qp_context *context, 212255932Salfred enum mlx4_qp_optpar optpar, 213255932Salfred int sqd_event, struct mlx4_qp *qp) 214255932Salfred{ 215255932Salfred return __mlx4_qp_modify(dev, mtt, cur_state, new_state, context, 216255932Salfred optpar, sqd_event, qp, 0); 217255932Salfred} 218219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_modify); 219219820Sjeff 220255932Salfredint __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, 221272027Shselasky int *base, u8 flags) 222219820Sjeff{ 223329159Shselasky u32 uid; 224329159Shselasky int bf_qp = !!(flags & (u8)MLX4_RESERVE_ETH_BF_QP); 225272027Shselasky 226219820Sjeff struct mlx4_priv *priv = mlx4_priv(dev); 227219820Sjeff struct mlx4_qp_table *qp_table = &priv->qp_table; 228219820Sjeff 229255932Salfred if (cnt > MLX4_MAX_BF_QP_RANGE && bf_qp) 230329159Shselasky return -ENOMEM; 231219820Sjeff 232329159Shselasky uid = MLX4_QP_TABLE_ZONE_GENERAL; 233329159Shselasky if (flags & (u8)MLX4_RESERVE_A0_QP) { 234329159Shselasky if (bf_qp) 235329159Shselasky uid = MLX4_QP_TABLE_ZONE_RAW_ETH; 236329159Shselasky else 237329159Shselasky uid = MLX4_QP_TABLE_ZONE_RSS; 238329159Shselasky } 239329159Shselasky 240329159Shselasky *base = mlx4_zone_alloc_entries(qp_table->zones, uid, cnt, align, 241329159Shselasky bf_qp ? MLX4_BF_QP_SKIP_MASK : 0, NULL); 242255932Salfred if (*base == -1) 243255932Salfred return -ENOMEM; 244255932Salfred 245219820Sjeff return 0; 246219820Sjeff} 247255932Salfred 248255932Salfredint mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, 249272027Shselasky int *base, u8 flags) 250255932Salfred{ 251255932Salfred u64 in_param = 0; 252255932Salfred u64 out_param; 253255932Salfred int err; 254255932Salfred 255329159Shselasky /* Turn off all unsupported QP allocation flags */ 256329159Shselasky flags &= dev->caps.alloc_res_qp_mask; 257329159Shselasky 258255932Salfred if (mlx4_is_mfunc(dev)) { 259329159Shselasky set_param_l(&in_param, (((u32)flags) << 24) | (u32)cnt); 260255932Salfred set_param_h(&in_param, align); 261255932Salfred err = mlx4_cmd_imm(dev, in_param, &out_param, 262255932Salfred RES_QP, RES_OP_RESERVE, 263255932Salfred MLX4_CMD_ALLOC_RES, 264255932Salfred MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 265255932Salfred if (err) 266255932Salfred return err; 267255932Salfred 268255932Salfred *base = get_param_l(&out_param); 269255932Salfred return 0; 270255932Salfred } 271272027Shselasky return __mlx4_qp_reserve_range(dev, cnt, align, base, flags); 272255932Salfred} 273219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_reserve_range); 274219820Sjeff 275255932Salfredvoid __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) 276219820Sjeff{ 277219820Sjeff struct mlx4_priv *priv = mlx4_priv(dev); 278219820Sjeff struct mlx4_qp_table *qp_table = &priv->qp_table; 279255932Salfred 280255932Salfred if (mlx4_is_qp_reserved(dev, (u32) base_qpn)) 281219820Sjeff return; 282329159Shselasky mlx4_zone_free_entries_unique(qp_table->zones, base_qpn, cnt); 283219820Sjeff} 284255932Salfred 285255932Salfredvoid mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) 286255932Salfred{ 287255932Salfred u64 in_param = 0; 288255932Salfred int err; 289255932Salfred 290255932Salfred if (mlx4_is_mfunc(dev)) { 291255932Salfred set_param_l(&in_param, base_qpn); 292255932Salfred set_param_h(&in_param, cnt); 293255932Salfred err = mlx4_cmd(dev, in_param, RES_QP, RES_OP_RESERVE, 294255932Salfred MLX4_CMD_FREE_RES, 295255932Salfred MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 296255932Salfred if (err) { 297329159Shselasky mlx4_warn(dev, "Failed to release qp range base:%d cnt:%d\n", 298329159Shselasky base_qpn, cnt); 299255932Salfred } 300255932Salfred } else 301255932Salfred __mlx4_qp_release_range(dev, base_qpn, cnt); 302255932Salfred} 303219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_release_range); 304219820Sjeff 305329159Shselaskyint __mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn, gfp_t gfp) 306219820Sjeff{ 307219820Sjeff struct mlx4_priv *priv = mlx4_priv(dev); 308219820Sjeff struct mlx4_qp_table *qp_table = &priv->qp_table; 309219820Sjeff int err; 310219820Sjeff 311329159Shselasky err = mlx4_table_get(dev, &qp_table->qp_table, qpn, gfp); 312219820Sjeff if (err) 313219820Sjeff goto err_out; 314219820Sjeff 315329159Shselasky err = mlx4_table_get(dev, &qp_table->auxc_table, qpn, gfp); 316219820Sjeff if (err) 317219820Sjeff goto err_put_qp; 318219820Sjeff 319329159Shselasky err = mlx4_table_get(dev, &qp_table->altc_table, qpn, gfp); 320219820Sjeff if (err) 321219820Sjeff goto err_put_auxc; 322219820Sjeff 323329159Shselasky err = mlx4_table_get(dev, &qp_table->rdmarc_table, qpn, gfp); 324219820Sjeff if (err) 325219820Sjeff goto err_put_altc; 326219820Sjeff 327329159Shselasky err = mlx4_table_get(dev, &qp_table->cmpt_table, qpn, gfp); 328219820Sjeff if (err) 329219820Sjeff goto err_put_rdmarc; 330219820Sjeff 331219820Sjeff return 0; 332219820Sjeff 333219820Sjefferr_put_rdmarc: 334255932Salfred mlx4_table_put(dev, &qp_table->rdmarc_table, qpn); 335219820Sjeff 336219820Sjefferr_put_altc: 337255932Salfred mlx4_table_put(dev, &qp_table->altc_table, qpn); 338219820Sjeff 339219820Sjefferr_put_auxc: 340255932Salfred mlx4_table_put(dev, &qp_table->auxc_table, qpn); 341219820Sjeff 342219820Sjefferr_put_qp: 343255932Salfred mlx4_table_put(dev, &qp_table->qp_table, qpn); 344219820Sjeff 345219820Sjefferr_out: 346219820Sjeff return err; 347219820Sjeff} 348219820Sjeff 349329159Shselaskystatic int mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn, gfp_t gfp) 350219820Sjeff{ 351255932Salfred u64 param = 0; 352219820Sjeff 353255932Salfred if (mlx4_is_mfunc(dev)) { 354255932Salfred set_param_l(¶m, qpn); 355255932Salfred return mlx4_cmd_imm(dev, param, ¶m, RES_QP, RES_OP_MAP_ICM, 356255932Salfred MLX4_CMD_ALLOC_RES, MLX4_CMD_TIME_CLASS_A, 357255932Salfred MLX4_CMD_WRAPPED); 358255932Salfred } 359329159Shselasky return __mlx4_qp_alloc_icm(dev, qpn, gfp); 360219820Sjeff} 361219820Sjeff 362255932Salfredvoid __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) 363255932Salfred{ 364255932Salfred struct mlx4_priv *priv = mlx4_priv(dev); 365255932Salfred struct mlx4_qp_table *qp_table = &priv->qp_table; 366255932Salfred 367255932Salfred mlx4_table_put(dev, &qp_table->cmpt_table, qpn); 368255932Salfred mlx4_table_put(dev, &qp_table->rdmarc_table, qpn); 369255932Salfred mlx4_table_put(dev, &qp_table->altc_table, qpn); 370255932Salfred mlx4_table_put(dev, &qp_table->auxc_table, qpn); 371255932Salfred mlx4_table_put(dev, &qp_table->qp_table, qpn); 372255932Salfred} 373255932Salfred 374255932Salfredstatic void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) 375255932Salfred{ 376255932Salfred u64 in_param = 0; 377255932Salfred 378255932Salfred if (mlx4_is_mfunc(dev)) { 379255932Salfred set_param_l(&in_param, qpn); 380255932Salfred if (mlx4_cmd(dev, in_param, RES_QP, RES_OP_MAP_ICM, 381255932Salfred MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, 382255932Salfred MLX4_CMD_WRAPPED)) 383255932Salfred mlx4_warn(dev, "Failed to free icm of qp:%d\n", qpn); 384255932Salfred } else 385255932Salfred __mlx4_qp_free_icm(dev, qpn); 386255932Salfred} 387255932Salfred 388329159Shselaskyint mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp, gfp_t gfp) 389255932Salfred{ 390255932Salfred struct mlx4_priv *priv = mlx4_priv(dev); 391255932Salfred struct mlx4_qp_table *qp_table = &priv->qp_table; 392255932Salfred int err; 393255932Salfred 394255932Salfred if (!qpn) 395255932Salfred return -EINVAL; 396255932Salfred 397255932Salfred qp->qpn = qpn; 398255932Salfred 399329159Shselasky err = mlx4_qp_alloc_icm(dev, qpn, gfp); 400255932Salfred if (err) 401255932Salfred return err; 402255932Salfred 403255932Salfred spin_lock_irq(&qp_table->lock); 404255932Salfred err = radix_tree_insert(&dev->qp_table_tree, qp->qpn & 405255932Salfred (dev->caps.num_qps - 1), qp); 406255932Salfred spin_unlock_irq(&qp_table->lock); 407255932Salfred if (err) 408255932Salfred goto err_icm; 409255932Salfred 410255932Salfred atomic_set(&qp->refcount, 1); 411255932Salfred init_completion(&qp->free); 412255932Salfred 413255932Salfred return 0; 414255932Salfred 415255932Salfrederr_icm: 416255932Salfred mlx4_qp_free_icm(dev, qpn); 417255932Salfred return err; 418255932Salfred} 419255932Salfred 420255932SalfredEXPORT_SYMBOL_GPL(mlx4_qp_alloc); 421255932Salfred 422329159Shselaskyint mlx4_update_qp(struct mlx4_dev *dev, u32 qpn, 423329159Shselasky enum mlx4_update_qp_attr attr, 424329159Shselasky struct mlx4_update_qp_params *params) 425329159Shselasky{ 426329159Shselasky struct mlx4_cmd_mailbox *mailbox; 427329159Shselasky struct mlx4_update_qp_context *cmd; 428329159Shselasky u64 pri_addr_path_mask = 0; 429329159Shselasky u64 qp_mask = 0; 430329159Shselasky int err = 0; 431329159Shselasky 432329159Shselasky if (!attr || (attr & ~MLX4_UPDATE_QP_SUPPORTED_ATTRS)) 433329159Shselasky return -EINVAL; 434329159Shselasky 435329159Shselasky mailbox = mlx4_alloc_cmd_mailbox(dev); 436329159Shselasky if (IS_ERR(mailbox)) 437329159Shselasky return PTR_ERR(mailbox); 438329159Shselasky 439329159Shselasky cmd = (struct mlx4_update_qp_context *)mailbox->buf; 440329159Shselasky 441329159Shselasky if (attr & MLX4_UPDATE_QP_SMAC) { 442329159Shselasky pri_addr_path_mask |= 1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX; 443329159Shselasky cmd->qp_context.pri_path.grh_mylmc = params->smac_index; 444329159Shselasky } 445329159Shselasky 446329159Shselasky if (attr & MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB) { 447329159Shselasky if (!(dev->caps.flags2 448329159Shselasky & MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB)) { 449329159Shselasky mlx4_warn(dev, 450329159Shselasky "Trying to set src check LB, but it isn't supported\n"); 451329159Shselasky err = -ENOTSUPP; 452329159Shselasky goto out; 453329159Shselasky } 454329159Shselasky pri_addr_path_mask |= 455329159Shselasky 1ULL << MLX4_UPD_QP_PATH_MASK_ETH_SRC_CHECK_MC_LB; 456329159Shselasky if (params->flags & 457329159Shselasky MLX4_UPDATE_QP_PARAMS_FLAGS_ETH_CHECK_MC_LB) { 458329159Shselasky cmd->qp_context.pri_path.fl |= 459329159Shselasky MLX4_FL_ETH_SRC_CHECK_MC_LB; 460329159Shselasky } 461329159Shselasky } 462329159Shselasky 463329159Shselasky if (attr & MLX4_UPDATE_QP_VSD) { 464329159Shselasky qp_mask |= 1ULL << MLX4_UPD_QP_MASK_VSD; 465329159Shselasky if (params->flags & MLX4_UPDATE_QP_PARAMS_FLAGS_VSD_ENABLE) 466329159Shselasky cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN); 467329159Shselasky } 468329159Shselasky 469329159Shselasky if (attr & MLX4_UPDATE_QP_RATE_LIMIT) { 470329159Shselasky qp_mask |= 1ULL << MLX4_UPD_QP_MASK_RATE_LIMIT; 471329159Shselasky cmd->qp_context.rate_limit_params = cpu_to_be16((params->rate_unit << 14) | params->rate_val); 472329159Shselasky } 473329159Shselasky 474329159Shselasky if (attr & MLX4_UPDATE_QP_QOS_VPORT) { 475329159Shselasky qp_mask |= 1ULL << MLX4_UPD_QP_MASK_QOS_VPP; 476329159Shselasky cmd->qp_context.qos_vport = params->qos_vport; 477329159Shselasky } 478329159Shselasky 479329159Shselasky cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask); 480329159Shselasky cmd->qp_mask = cpu_to_be64(qp_mask); 481329159Shselasky 482329159Shselasky err = mlx4_cmd(dev, mailbox->dma, qpn & 0xffffff, 0, 483329159Shselasky MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A, 484329159Shselasky MLX4_CMD_NATIVE); 485329159Shselaskyout: 486329159Shselasky mlx4_free_cmd_mailbox(dev, mailbox); 487329159Shselasky return err; 488329159Shselasky} 489329159ShselaskyEXPORT_SYMBOL_GPL(mlx4_update_qp); 490329159Shselasky 491219820Sjeffvoid mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp) 492219820Sjeff{ 493219820Sjeff struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 494219820Sjeff unsigned long flags; 495219820Sjeff 496219820Sjeff spin_lock_irqsave(&qp_table->lock, flags); 497219820Sjeff radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1)); 498219820Sjeff spin_unlock_irqrestore(&qp_table->lock, flags); 499219820Sjeff} 500219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_remove); 501219820Sjeff 502219820Sjeffvoid mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp) 503219820Sjeff{ 504219820Sjeff if (atomic_dec_and_test(&qp->refcount)) 505219820Sjeff complete(&qp->free); 506219820Sjeff wait_for_completion(&qp->free); 507219820Sjeff 508255932Salfred mlx4_qp_free_icm(dev, qp->qpn); 509219820Sjeff} 510219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_free); 511219820Sjeff 512219820Sjeffstatic int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn) 513219820Sjeff{ 514255932Salfred return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP, 515255932Salfred MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 516219820Sjeff} 517219820Sjeff 518329159Shselasky#define MLX4_QP_TABLE_RSS_ETH_PRIORITY 2 519329159Shselasky#define MLX4_QP_TABLE_RAW_ETH_PRIORITY 1 520329159Shselasky#define MLX4_QP_TABLE_RAW_ETH_SIZE 256 521329159Shselasky 522329159Shselaskystatic int mlx4_create_zones(struct mlx4_dev *dev, 523329159Shselasky u32 reserved_bottom_general, 524329159Shselasky u32 reserved_top_general, 525329159Shselasky u32 reserved_bottom_rss, 526329159Shselasky u32 start_offset_rss, 527329159Shselasky u32 max_table_offset) 528329159Shselasky{ 529329159Shselasky struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 530329159Shselasky struct mlx4_bitmap (*bitmap)[MLX4_QP_TABLE_ZONE_NUM] = NULL; 531329159Shselasky int bitmap_initialized = 0; 532329159Shselasky u32 last_offset; 533329159Shselasky int k; 534329159Shselasky int err; 535329159Shselasky 536329159Shselasky qp_table->zones = mlx4_zone_allocator_create(MLX4_ZONE_ALLOC_FLAGS_NO_OVERLAP); 537329159Shselasky 538329159Shselasky if (NULL == qp_table->zones) 539329159Shselasky return -ENOMEM; 540329159Shselasky 541329159Shselasky bitmap = kmalloc(sizeof(*bitmap), GFP_KERNEL); 542329159Shselasky 543329159Shselasky if (NULL == bitmap) { 544329159Shselasky err = -ENOMEM; 545329159Shselasky goto free_zone; 546329159Shselasky } 547329159Shselasky 548329159Shselasky err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_GENERAL, dev->caps.num_qps, 549329159Shselasky (1 << 23) - 1, reserved_bottom_general, 550329159Shselasky reserved_top_general); 551329159Shselasky 552329159Shselasky if (err) 553329159Shselasky goto free_bitmap; 554329159Shselasky 555329159Shselasky ++bitmap_initialized; 556329159Shselasky 557329159Shselasky err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_GENERAL, 558329159Shselasky MLX4_ZONE_FALLBACK_TO_HIGHER_PRIO | 559329159Shselasky MLX4_ZONE_USE_RR, 0, 560329159Shselasky 0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_GENERAL); 561329159Shselasky 562329159Shselasky if (err) 563329159Shselasky goto free_bitmap; 564329159Shselasky 565329159Shselasky err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_RSS, 566329159Shselasky reserved_bottom_rss, 567329159Shselasky reserved_bottom_rss - 1, 568329159Shselasky dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 569329159Shselasky reserved_bottom_rss - start_offset_rss); 570329159Shselasky 571329159Shselasky if (err) 572329159Shselasky goto free_bitmap; 573329159Shselasky 574329159Shselasky ++bitmap_initialized; 575329159Shselasky 576329159Shselasky err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_RSS, 577329159Shselasky MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO | 578329159Shselasky MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO | 579329159Shselasky MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RSS_ETH_PRIORITY, 580329159Shselasky 0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_RSS); 581329159Shselasky 582329159Shselasky if (err) 583329159Shselasky goto free_bitmap; 584329159Shselasky 585329159Shselasky last_offset = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; 586329159Shselasky /* We have a single zone for the A0 steering QPs area of the FW. This area 587329159Shselasky * needs to be split into subareas. One set of subareas is for RSS QPs 588329159Shselasky * (in which qp number bits 6 and/or 7 are set); the other set of subareas 589329159Shselasky * is for RAW_ETH QPs, which require that both bits 6 and 7 are zero. 590329159Shselasky * Currently, the values returned by the FW (A0 steering area starting qp number 591329159Shselasky * and A0 steering area size) are such that there are only two subareas -- one 592329159Shselasky * for RSS and one for RAW_ETH. 593329159Shselasky */ 594329159Shselasky for (k = MLX4_QP_TABLE_ZONE_RSS + 1; k < sizeof(*bitmap)/sizeof((*bitmap)[0]); 595329159Shselasky k++) { 596329159Shselasky int size; 597329159Shselasky u32 offset = start_offset_rss; 598329159Shselasky u32 bf_mask; 599329159Shselasky u32 requested_size; 600329159Shselasky 601329159Shselasky /* Assuming MLX4_BF_QP_SKIP_MASK is consecutive ones, this calculates 602329159Shselasky * a mask of all LSB bits set until (and not including) the first 603329159Shselasky * set bit of MLX4_BF_QP_SKIP_MASK. For example, if MLX4_BF_QP_SKIP_MASK 604329159Shselasky * is 0xc0, bf_mask will be 0x3f. 605329159Shselasky */ 606329159Shselasky bf_mask = (MLX4_BF_QP_SKIP_MASK & ~(MLX4_BF_QP_SKIP_MASK - 1)) - 1; 607329159Shselasky requested_size = min((u32)MLX4_QP_TABLE_RAW_ETH_SIZE, bf_mask + 1); 608329159Shselasky 609329159Shselasky if (((last_offset & MLX4_BF_QP_SKIP_MASK) && 610329159Shselasky ((int)(max_table_offset - last_offset)) >= 611329159Shselasky roundup_pow_of_two(MLX4_BF_QP_SKIP_MASK)) || 612329159Shselasky (!(last_offset & MLX4_BF_QP_SKIP_MASK) && 613329159Shselasky !((last_offset + requested_size - 1) & 614329159Shselasky MLX4_BF_QP_SKIP_MASK))) 615329159Shselasky size = requested_size; 616329159Shselasky else { 617329159Shselasky u32 candidate_offset = 618329159Shselasky (last_offset | MLX4_BF_QP_SKIP_MASK | bf_mask) + 1; 619329159Shselasky 620329159Shselasky if (last_offset & MLX4_BF_QP_SKIP_MASK) 621329159Shselasky last_offset = candidate_offset; 622329159Shselasky 623329159Shselasky /* From this point, the BF bits are 0 */ 624329159Shselasky 625329159Shselasky if (last_offset > max_table_offset) { 626329159Shselasky /* need to skip */ 627329159Shselasky size = -1; 628329159Shselasky } else { 629329159Shselasky size = min3(max_table_offset - last_offset, 630329159Shselasky bf_mask - (last_offset & bf_mask), 631329159Shselasky requested_size); 632329159Shselasky if (size < requested_size) { 633329159Shselasky int candidate_size; 634329159Shselasky 635329159Shselasky candidate_size = min3( 636329159Shselasky max_table_offset - candidate_offset, 637329159Shselasky bf_mask - (last_offset & bf_mask), 638329159Shselasky requested_size); 639329159Shselasky 640329159Shselasky /* We will not take this path if last_offset was 641329159Shselasky * already set above to candidate_offset 642329159Shselasky */ 643329159Shselasky if (candidate_size > size) { 644329159Shselasky last_offset = candidate_offset; 645329159Shselasky size = candidate_size; 646329159Shselasky } 647329159Shselasky } 648329159Shselasky } 649329159Shselasky } 650329159Shselasky 651329159Shselasky if (size > 0) { 652329159Shselasky /* mlx4_bitmap_alloc_range will find a contiguous range of "size" 653329159Shselasky * QPs in which both bits 6 and 7 are zero, because we pass it the 654329159Shselasky * MLX4_BF_SKIP_MASK). 655329159Shselasky */ 656329159Shselasky offset = mlx4_bitmap_alloc_range( 657329159Shselasky *bitmap + MLX4_QP_TABLE_ZONE_RSS, 658329159Shselasky size, 1, 659329159Shselasky MLX4_BF_QP_SKIP_MASK); 660329159Shselasky 661329159Shselasky if (offset == (u32)-1) { 662329159Shselasky err = -ENOMEM; 663329159Shselasky break; 664329159Shselasky } 665329159Shselasky 666329159Shselasky last_offset = offset + size; 667329159Shselasky 668329159Shselasky err = mlx4_bitmap_init(*bitmap + k, roundup_pow_of_two(size), 669329159Shselasky roundup_pow_of_two(size) - 1, 0, 670329159Shselasky roundup_pow_of_two(size) - size); 671329159Shselasky } else { 672329159Shselasky /* Add an empty bitmap, we'll allocate from different zones (since 673329159Shselasky * at least one is reserved) 674329159Shselasky */ 675329159Shselasky err = mlx4_bitmap_init(*bitmap + k, 1, 676329159Shselasky MLX4_QP_TABLE_RAW_ETH_SIZE - 1, 0, 677329159Shselasky 0); 678329159Shselasky mlx4_bitmap_alloc_range(*bitmap + k, 1, 1, 0); 679329159Shselasky } 680329159Shselasky 681329159Shselasky if (err) 682329159Shselasky break; 683329159Shselasky 684329159Shselasky ++bitmap_initialized; 685329159Shselasky 686329159Shselasky err = mlx4_zone_add_one(qp_table->zones, *bitmap + k, 687329159Shselasky MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO | 688329159Shselasky MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO | 689329159Shselasky MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RAW_ETH_PRIORITY, 690329159Shselasky offset, qp_table->zones_uids + k); 691329159Shselasky 692329159Shselasky if (err) 693329159Shselasky break; 694329159Shselasky } 695329159Shselasky 696329159Shselasky if (err) 697329159Shselasky goto free_bitmap; 698329159Shselasky 699329159Shselasky qp_table->bitmap_gen = *bitmap; 700329159Shselasky 701329159Shselasky return err; 702329159Shselasky 703329159Shselaskyfree_bitmap: 704329159Shselasky for (k = 0; k < bitmap_initialized; k++) 705329159Shselasky mlx4_bitmap_cleanup(*bitmap + k); 706329159Shselasky kfree(bitmap); 707329159Shselaskyfree_zone: 708329159Shselasky mlx4_zone_allocator_destroy(qp_table->zones); 709329159Shselasky return err; 710329159Shselasky} 711329159Shselasky 712329159Shselaskystatic void mlx4_cleanup_qp_zones(struct mlx4_dev *dev) 713329159Shselasky{ 714329159Shselasky struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 715329159Shselasky 716329159Shselasky if (qp_table->zones) { 717329159Shselasky int i; 718329159Shselasky 719329159Shselasky for (i = 0; 720329159Shselasky i < sizeof(qp_table->zones_uids)/sizeof(qp_table->zones_uids[0]); 721329159Shselasky i++) { 722329159Shselasky struct mlx4_bitmap *bitmap = 723329159Shselasky mlx4_zone_get_bitmap(qp_table->zones, 724329159Shselasky qp_table->zones_uids[i]); 725329159Shselasky 726329159Shselasky mlx4_zone_remove_one(qp_table->zones, qp_table->zones_uids[i]); 727329159Shselasky if (NULL == bitmap) 728329159Shselasky continue; 729329159Shselasky 730329159Shselasky mlx4_bitmap_cleanup(bitmap); 731329159Shselasky } 732329159Shselasky mlx4_zone_allocator_destroy(qp_table->zones); 733329159Shselasky kfree(qp_table->bitmap_gen); 734329159Shselasky qp_table->bitmap_gen = NULL; 735329159Shselasky qp_table->zones = NULL; 736329159Shselasky } 737329159Shselasky} 738329159Shselasky 739219820Sjeffint mlx4_init_qp_table(struct mlx4_dev *dev) 740219820Sjeff{ 741219820Sjeff struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; 742219820Sjeff int err; 743219820Sjeff int reserved_from_top = 0; 744255932Salfred int reserved_from_bot; 745255932Salfred int k; 746329159Shselasky int fixed_reserved_from_bot_rv = 0; 747329159Shselasky int bottom_reserved_for_rss_bitmap; 748329159Shselasky u32 max_table_offset = dev->caps.dmfs_high_rate_qpn_base + 749329159Shselasky dev->caps.dmfs_high_rate_qpn_range; 750219820Sjeff 751219820Sjeff spin_lock_init(&qp_table->lock); 752219820Sjeff INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC); 753255932Salfred if (mlx4_is_slave(dev)) 754255932Salfred return 0; 755219820Sjeff 756329159Shselasky /* We reserve 2 extra QPs per port for the special QPs. The 757219820Sjeff * block of special QPs must be aligned to a multiple of 8, so 758219820Sjeff * round up. 759255932Salfred * 760219820Sjeff * We also reserve the MSB of the 24-bit QP number to indicate 761255932Salfred * that a QP is an XRC QP. 762219820Sjeff */ 763329159Shselasky for (k = 0; k <= MLX4_QP_REGION_BOTTOM; k++) 764329159Shselasky fixed_reserved_from_bot_rv += dev->caps.reserved_qps_cnt[k]; 765219820Sjeff 766329159Shselasky if (fixed_reserved_from_bot_rv < max_table_offset) 767329159Shselasky fixed_reserved_from_bot_rv = max_table_offset; 768329159Shselasky 769329159Shselasky /* We reserve at least 1 extra for bitmaps that we don't have enough space for*/ 770329159Shselasky bottom_reserved_for_rss_bitmap = 771329159Shselasky roundup_pow_of_two(fixed_reserved_from_bot_rv + 1); 772329159Shselasky dev->phys_caps.base_sqpn = ALIGN(bottom_reserved_for_rss_bitmap, 8); 773329159Shselasky 774219820Sjeff { 775219820Sjeff int sort[MLX4_NUM_QP_REGION]; 776329159Shselasky int i, j; 777219820Sjeff int last_base = dev->caps.num_qps; 778219820Sjeff 779219820Sjeff for (i = 1; i < MLX4_NUM_QP_REGION; ++i) 780219820Sjeff sort[i] = i; 781219820Sjeff 782329159Shselasky for (i = MLX4_NUM_QP_REGION; i > MLX4_QP_REGION_BOTTOM; --i) { 783329159Shselasky for (j = MLX4_QP_REGION_BOTTOM + 2; j < i; ++j) { 784219820Sjeff if (dev->caps.reserved_qps_cnt[sort[j]] > 785329159Shselasky dev->caps.reserved_qps_cnt[sort[j - 1]]) 786329159Shselasky swap(sort[j], sort[j - 1]); 787219820Sjeff } 788219820Sjeff } 789219820Sjeff 790329159Shselasky for (i = MLX4_QP_REGION_BOTTOM + 1; i < MLX4_NUM_QP_REGION; ++i) { 791219820Sjeff last_base -= dev->caps.reserved_qps_cnt[sort[i]]; 792219820Sjeff dev->caps.reserved_qps_base[sort[i]] = last_base; 793219820Sjeff reserved_from_top += 794219820Sjeff dev->caps.reserved_qps_cnt[sort[i]]; 795219820Sjeff } 796219820Sjeff } 797219820Sjeff 798255932Salfred /* Reserve 8 real SQPs in both native and SRIOV modes. 799255932Salfred * In addition, in SRIOV mode, reserve 8 proxy SQPs per function 800255932Salfred * (for all PFs and VFs), and 8 corresponding tunnel QPs. 801255932Salfred * Each proxy SQP works opposite its own tunnel QP. 802255932Salfred * 803255932Salfred * The QPs are arranged as follows: 804255932Salfred * a. 8 real SQPs 805255932Salfred * b. All the proxy SQPs (8 per function) 806255932Salfred * c. All the tunnel QPs (8 per function) 807255932Salfred */ 808255932Salfred reserved_from_bot = mlx4_num_reserved_sqps(dev); 809255932Salfred if (reserved_from_bot + reserved_from_top > dev->caps.num_qps) { 810329159Shselasky mlx4_err(dev, "Number of reserved QPs is higher than number of QPs\n"); 811255932Salfred return -EINVAL; 812255932Salfred } 813255932Salfred 814329159Shselasky err = mlx4_create_zones(dev, reserved_from_bot, reserved_from_bot, 815329159Shselasky bottom_reserved_for_rss_bitmap, 816329159Shselasky fixed_reserved_from_bot_rv, 817329159Shselasky max_table_offset); 818329159Shselasky 819219820Sjeff if (err) 820219820Sjeff return err; 821219820Sjeff 822255932Salfred if (mlx4_is_mfunc(dev)) { 823255932Salfred /* for PPF use */ 824255932Salfred dev->phys_caps.base_proxy_sqpn = dev->phys_caps.base_sqpn + 8; 825255932Salfred dev->phys_caps.base_tunnel_sqpn = dev->phys_caps.base_sqpn + 8 + 8 * MLX4_MFUNC_MAX; 826255932Salfred 827255932Salfred /* In mfunc, calculate proxy and tunnel qp offsets for the PF here, 828255932Salfred * since the PF does not call mlx4_slave_caps */ 829255932Salfred dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); 830255932Salfred dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); 831255932Salfred dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); 832255932Salfred dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); 833255932Salfred 834255932Salfred if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy || 835255932Salfred !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) { 836255932Salfred err = -ENOMEM; 837255932Salfred goto err_mem; 838255932Salfred } 839255932Salfred 840255932Salfred for (k = 0; k < dev->caps.num_ports; k++) { 841255932Salfred dev->caps.qp0_proxy[k] = dev->phys_caps.base_proxy_sqpn + 842255932Salfred 8 * mlx4_master_func_num(dev) + k; 843255932Salfred dev->caps.qp0_tunnel[k] = dev->caps.qp0_proxy[k] + 8 * MLX4_MFUNC_MAX; 844255932Salfred dev->caps.qp1_proxy[k] = dev->phys_caps.base_proxy_sqpn + 845255932Salfred 8 * mlx4_master_func_num(dev) + MLX4_MAX_PORTS + k; 846255932Salfred dev->caps.qp1_tunnel[k] = dev->caps.qp1_proxy[k] + 8 * MLX4_MFUNC_MAX; 847255932Salfred } 848255932Salfred } 849255932Salfred 850255932Salfred 851255932Salfred err = mlx4_CONF_SPECIAL_QP(dev, dev->phys_caps.base_sqpn); 852255932Salfred if (err) 853255932Salfred goto err_mem; 854255932Salfred 855329159Shselasky return err; 856329159Shselasky 857255932Salfrederr_mem: 858255932Salfred kfree(dev->caps.qp0_tunnel); 859255932Salfred kfree(dev->caps.qp0_proxy); 860255932Salfred kfree(dev->caps.qp1_tunnel); 861255932Salfred kfree(dev->caps.qp1_proxy); 862255932Salfred dev->caps.qp0_tunnel = dev->caps.qp0_proxy = 863255932Salfred dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL; 864329159Shselasky mlx4_cleanup_qp_zones(dev); 865255932Salfred return err; 866219820Sjeff} 867219820Sjeff 868219820Sjeffvoid mlx4_cleanup_qp_table(struct mlx4_dev *dev) 869219820Sjeff{ 870255932Salfred if (mlx4_is_slave(dev)) 871255932Salfred return; 872255932Salfred 873219820Sjeff mlx4_CONF_SPECIAL_QP(dev, 0); 874329159Shselasky 875329159Shselasky mlx4_cleanup_qp_zones(dev); 876219820Sjeff} 877219820Sjeff 878219820Sjeffint mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp, 879219820Sjeff struct mlx4_qp_context *context) 880219820Sjeff{ 881219820Sjeff struct mlx4_cmd_mailbox *mailbox; 882219820Sjeff int err; 883219820Sjeff 884219820Sjeff mailbox = mlx4_alloc_cmd_mailbox(dev); 885219820Sjeff if (IS_ERR(mailbox)) 886219820Sjeff return PTR_ERR(mailbox); 887219820Sjeff 888219820Sjeff err = mlx4_cmd_box(dev, 0, mailbox->dma, qp->qpn, 0, 889255932Salfred MLX4_CMD_QUERY_QP, MLX4_CMD_TIME_CLASS_A, 890255932Salfred MLX4_CMD_WRAPPED); 891219820Sjeff if (!err) 892219820Sjeff memcpy(context, mailbox->buf + 8, sizeof *context); 893219820Sjeff 894219820Sjeff mlx4_free_cmd_mailbox(dev, mailbox); 895219820Sjeff return err; 896219820Sjeff} 897219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_query); 898219820Sjeff 899219820Sjeffint mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 900219820Sjeff struct mlx4_qp_context *context, 901219820Sjeff struct mlx4_qp *qp, enum mlx4_qp_state *qp_state) 902219820Sjeff{ 903219820Sjeff int err; 904219820Sjeff int i; 905219820Sjeff enum mlx4_qp_state states[] = { 906219820Sjeff MLX4_QP_STATE_RST, 907219820Sjeff MLX4_QP_STATE_INIT, 908219820Sjeff MLX4_QP_STATE_RTR, 909219820Sjeff MLX4_QP_STATE_RTS 910219820Sjeff }; 911219820Sjeff 912219820Sjeff for (i = 0; i < ARRAY_SIZE(states) - 1; i++) { 913219820Sjeff context->flags &= cpu_to_be32(~(0xf << 28)); 914219820Sjeff context->flags |= cpu_to_be32(states[i + 1] << 28); 915329159Shselasky if (states[i + 1] != MLX4_QP_STATE_RTR) 916329159Shselasky context->params2 &= ~MLX4_QP_BIT_FPP; 917219820Sjeff err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1], 918219820Sjeff context, 0, 0, qp); 919219820Sjeff if (err) { 920329159Shselasky mlx4_err(dev, "Failed to bring QP to state: %d with error: %d\n", 921219820Sjeff states[i + 1], err); 922219820Sjeff return err; 923219820Sjeff } 924219820Sjeff 925219820Sjeff *qp_state = states[i + 1]; 926219820Sjeff } 927219820Sjeff 928219820Sjeff return 0; 929219820Sjeff} 930219820SjeffEXPORT_SYMBOL_GPL(mlx4_qp_to_ready); 931329159Shselasky 932329159Shselaskyu16 mlx4_qp_roce_entropy(struct mlx4_dev *dev, u32 qpn) 933329159Shselasky{ 934329159Shselasky struct mlx4_qp_context context; 935329159Shselasky struct mlx4_qp qp; 936329159Shselasky int err; 937329159Shselasky 938329159Shselasky qp.qpn = qpn; 939329159Shselasky err = mlx4_qp_query(dev, &qp, &context); 940329159Shselasky if (!err) { 941329159Shselasky u32 dest_qpn = be32_to_cpu(context.remote_qpn) & 0xffffff; 942329159Shselasky u16 folded_dst = folded_qp(dest_qpn); 943329159Shselasky u16 folded_src = folded_qp(qpn); 944329159Shselasky 945329159Shselasky return (dest_qpn != qpn) ? 946329159Shselasky ((folded_dst ^ folded_src) | 0xC000) : 947329159Shselasky folded_src | 0xC000; 948329159Shselasky } 949329159Shselasky return 0xdead; 950329159Shselasky} 951