18700e3e7SMoni Shoua /* 28700e3e7SMoni Shoua * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 38700e3e7SMoni Shoua * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 48700e3e7SMoni Shoua * 58700e3e7SMoni Shoua * This software is available to you under a choice of one of two 68700e3e7SMoni Shoua * licenses. You may choose to be licensed under the terms of the GNU 78700e3e7SMoni Shoua * General Public License (GPL) Version 2, available from the file 88700e3e7SMoni Shoua * COPYING in the main directory of this source tree, or the 98700e3e7SMoni Shoua * OpenIB.org BSD license below: 108700e3e7SMoni Shoua * 118700e3e7SMoni Shoua * Redistribution and use in source and binary forms, with or 128700e3e7SMoni Shoua * without modification, are permitted provided that the following 138700e3e7SMoni Shoua * conditions are met: 148700e3e7SMoni Shoua * 158700e3e7SMoni Shoua * - Redistributions of source code must retain the above 168700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 178700e3e7SMoni Shoua * disclaimer. 188700e3e7SMoni Shoua * 198700e3e7SMoni Shoua * - Redistributions in binary form must reproduce the above 208700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 218700e3e7SMoni Shoua * disclaimer in the documentation and/or other materials 228700e3e7SMoni Shoua * provided with the distribution. 238700e3e7SMoni Shoua * 248700e3e7SMoni Shoua * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 258700e3e7SMoni Shoua * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 268700e3e7SMoni Shoua * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 278700e3e7SMoni Shoua * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 288700e3e7SMoni Shoua * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 298700e3e7SMoni Shoua * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 308700e3e7SMoni Shoua * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 318700e3e7SMoni Shoua * SOFTWARE. 328700e3e7SMoni Shoua */ 338700e3e7SMoni Shoua 348700e3e7SMoni Shoua #include "rxe.h" 358700e3e7SMoni Shoua #include "rxe_loc.h" 368700e3e7SMoni Shoua #include "rxe_queue.h" 378700e3e7SMoni Shoua 388700e3e7SMoni Shoua static int rxe_query_device(struct ib_device *dev, 398700e3e7SMoni Shoua struct ib_device_attr *attr, 408700e3e7SMoni Shoua struct ib_udata *uhw) 418700e3e7SMoni Shoua { 428700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 438700e3e7SMoni Shoua 448700e3e7SMoni Shoua if (uhw->inlen || uhw->outlen) 458700e3e7SMoni Shoua return -EINVAL; 468700e3e7SMoni Shoua 478700e3e7SMoni Shoua *attr = rxe->attr; 488700e3e7SMoni Shoua return 0; 498700e3e7SMoni Shoua } 508700e3e7SMoni Shoua 518700e3e7SMoni Shoua static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed, 528700e3e7SMoni Shoua u8 *active_width) 538700e3e7SMoni Shoua { 548700e3e7SMoni Shoua if (speed <= 1000) { 558700e3e7SMoni Shoua *active_width = IB_WIDTH_1X; 568700e3e7SMoni Shoua *active_speed = IB_SPEED_SDR; 578700e3e7SMoni Shoua } else if (speed <= 10000) { 588700e3e7SMoni Shoua *active_width = IB_WIDTH_1X; 598700e3e7SMoni Shoua *active_speed = IB_SPEED_FDR10; 608700e3e7SMoni Shoua } else if (speed <= 20000) { 618700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 628700e3e7SMoni Shoua *active_speed = IB_SPEED_DDR; 638700e3e7SMoni Shoua } else if (speed <= 30000) { 648700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 658700e3e7SMoni Shoua *active_speed = IB_SPEED_QDR; 668700e3e7SMoni Shoua } else if (speed <= 40000) { 678700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 688700e3e7SMoni Shoua *active_speed = IB_SPEED_FDR10; 698700e3e7SMoni Shoua } else { 708700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 718700e3e7SMoni Shoua *active_speed = IB_SPEED_EDR; 728700e3e7SMoni Shoua } 738700e3e7SMoni Shoua } 748700e3e7SMoni Shoua 758700e3e7SMoni Shoua static int rxe_query_port(struct ib_device *dev, 768700e3e7SMoni Shoua u8 port_num, struct ib_port_attr *attr) 778700e3e7SMoni Shoua { 788700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 798700e3e7SMoni Shoua struct rxe_port *port; 808700e3e7SMoni Shoua u32 speed; 818700e3e7SMoni Shoua 828700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 838700e3e7SMoni Shoua pr_warn("invalid port_number %d\n", port_num); 848700e3e7SMoni Shoua goto err1; 858700e3e7SMoni Shoua } 868700e3e7SMoni Shoua 878700e3e7SMoni Shoua port = &rxe->port; 888700e3e7SMoni Shoua 898700e3e7SMoni Shoua *attr = port->attr; 908700e3e7SMoni Shoua 918700e3e7SMoni Shoua mutex_lock(&rxe->usdev_lock); 928700e3e7SMoni Shoua if (rxe->ndev->ethtool_ops->get_link_ksettings) { 938700e3e7SMoni Shoua struct ethtool_link_ksettings ks; 948700e3e7SMoni Shoua 958700e3e7SMoni Shoua rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks); 968700e3e7SMoni Shoua speed = ks.base.speed; 978700e3e7SMoni Shoua } else if (rxe->ndev->ethtool_ops->get_settings) { 988700e3e7SMoni Shoua struct ethtool_cmd cmd; 998700e3e7SMoni Shoua 1008700e3e7SMoni Shoua rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd); 1018700e3e7SMoni Shoua speed = cmd.speed; 1028700e3e7SMoni Shoua } else { 103e404f945SParav Pandit pr_warn("%s speed is unknown, defaulting to 1000\n", 104e404f945SParav Pandit rxe->ndev->name); 1058700e3e7SMoni Shoua speed = 1000; 1068700e3e7SMoni Shoua } 107e404f945SParav Pandit rxe_eth_speed_to_ib_speed(speed, &attr->active_speed, 108e404f945SParav Pandit &attr->active_width); 1098700e3e7SMoni Shoua mutex_unlock(&rxe->usdev_lock); 1108700e3e7SMoni Shoua 1118700e3e7SMoni Shoua return 0; 1128700e3e7SMoni Shoua 1138700e3e7SMoni Shoua err1: 1148700e3e7SMoni Shoua return -EINVAL; 1158700e3e7SMoni Shoua } 1168700e3e7SMoni Shoua 1178700e3e7SMoni Shoua static int rxe_query_gid(struct ib_device *device, 1188700e3e7SMoni Shoua u8 port_num, int index, union ib_gid *gid) 1198700e3e7SMoni Shoua { 1208700e3e7SMoni Shoua int ret; 1218700e3e7SMoni Shoua 1228700e3e7SMoni Shoua if (index > RXE_PORT_GID_TBL_LEN) 1238700e3e7SMoni Shoua return -EINVAL; 1248700e3e7SMoni Shoua 1258700e3e7SMoni Shoua ret = ib_get_cached_gid(device, port_num, index, gid, NULL); 1268700e3e7SMoni Shoua if (ret == -EAGAIN) { 1278700e3e7SMoni Shoua memcpy(gid, &zgid, sizeof(*gid)); 1288700e3e7SMoni Shoua return 0; 1298700e3e7SMoni Shoua } 1308700e3e7SMoni Shoua 1318700e3e7SMoni Shoua return ret; 1328700e3e7SMoni Shoua } 1338700e3e7SMoni Shoua 1348700e3e7SMoni Shoua static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int 1358700e3e7SMoni Shoua index, const union ib_gid *gid, 1368700e3e7SMoni Shoua const struct ib_gid_attr *attr, void **context) 1378700e3e7SMoni Shoua { 1388700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1398700e3e7SMoni Shoua return -EINVAL; 1408700e3e7SMoni Shoua return 0; 1418700e3e7SMoni Shoua } 1428700e3e7SMoni Shoua 1438700e3e7SMoni Shoua static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int 1448700e3e7SMoni Shoua index, void **context) 1458700e3e7SMoni Shoua { 1468700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1478700e3e7SMoni Shoua return -EINVAL; 1488700e3e7SMoni Shoua return 0; 1498700e3e7SMoni Shoua } 1508700e3e7SMoni Shoua 1518700e3e7SMoni Shoua static struct net_device *rxe_get_netdev(struct ib_device *device, 1528700e3e7SMoni Shoua u8 port_num) 1538700e3e7SMoni Shoua { 1548700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1558700e3e7SMoni Shoua 1568700e3e7SMoni Shoua if (rxe->ndev) { 1578700e3e7SMoni Shoua dev_hold(rxe->ndev); 1588700e3e7SMoni Shoua return rxe->ndev; 1598700e3e7SMoni Shoua } 1608700e3e7SMoni Shoua 1618700e3e7SMoni Shoua return NULL; 1628700e3e7SMoni Shoua } 1638700e3e7SMoni Shoua 1648700e3e7SMoni Shoua static int rxe_query_pkey(struct ib_device *device, 1658700e3e7SMoni Shoua u8 port_num, u16 index, u16 *pkey) 1668700e3e7SMoni Shoua { 1678700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1688700e3e7SMoni Shoua struct rxe_port *port; 1698700e3e7SMoni Shoua 1708700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 1718700e3e7SMoni Shoua dev_warn(device->dma_device, "invalid port_num = %d\n", 1728700e3e7SMoni Shoua port_num); 1738700e3e7SMoni Shoua goto err1; 1748700e3e7SMoni Shoua } 1758700e3e7SMoni Shoua 1768700e3e7SMoni Shoua port = &rxe->port; 1778700e3e7SMoni Shoua 1788700e3e7SMoni Shoua if (unlikely(index >= port->attr.pkey_tbl_len)) { 1798700e3e7SMoni Shoua dev_warn(device->dma_device, "invalid index = %d\n", 1808700e3e7SMoni Shoua index); 1818700e3e7SMoni Shoua goto err1; 1828700e3e7SMoni Shoua } 1838700e3e7SMoni Shoua 1848700e3e7SMoni Shoua *pkey = port->pkey_tbl[index]; 1858700e3e7SMoni Shoua return 0; 1868700e3e7SMoni Shoua 1878700e3e7SMoni Shoua err1: 1888700e3e7SMoni Shoua return -EINVAL; 1898700e3e7SMoni Shoua } 1908700e3e7SMoni Shoua 1918700e3e7SMoni Shoua static int rxe_modify_device(struct ib_device *dev, 1928700e3e7SMoni Shoua int mask, struct ib_device_modify *attr) 1938700e3e7SMoni Shoua { 1948700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 1958700e3e7SMoni Shoua 1968700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) 1978700e3e7SMoni Shoua rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid); 1988700e3e7SMoni Shoua 1998700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 2008700e3e7SMoni Shoua memcpy(rxe->ib_dev.node_desc, 2018700e3e7SMoni Shoua attr->node_desc, sizeof(rxe->ib_dev.node_desc)); 2028700e3e7SMoni Shoua } 2038700e3e7SMoni Shoua 2048700e3e7SMoni Shoua return 0; 2058700e3e7SMoni Shoua } 2068700e3e7SMoni Shoua 2078700e3e7SMoni Shoua static int rxe_modify_port(struct ib_device *dev, 2088700e3e7SMoni Shoua u8 port_num, int mask, struct ib_port_modify *attr) 2098700e3e7SMoni Shoua { 2108700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2118700e3e7SMoni Shoua struct rxe_port *port; 2128700e3e7SMoni Shoua 2138700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 2148700e3e7SMoni Shoua pr_warn("invalid port_num = %d\n", port_num); 2158700e3e7SMoni Shoua goto err1; 2168700e3e7SMoni Shoua } 2178700e3e7SMoni Shoua 2188700e3e7SMoni Shoua port = &rxe->port; 2198700e3e7SMoni Shoua 2208700e3e7SMoni Shoua port->attr.port_cap_flags |= attr->set_port_cap_mask; 2218700e3e7SMoni Shoua port->attr.port_cap_flags &= ~attr->clr_port_cap_mask; 2228700e3e7SMoni Shoua 2238700e3e7SMoni Shoua if (mask & IB_PORT_RESET_QKEY_CNTR) 2248700e3e7SMoni Shoua port->attr.qkey_viol_cntr = 0; 2258700e3e7SMoni Shoua 2268700e3e7SMoni Shoua return 0; 2278700e3e7SMoni Shoua 2288700e3e7SMoni Shoua err1: 2298700e3e7SMoni Shoua return -EINVAL; 2308700e3e7SMoni Shoua } 2318700e3e7SMoni Shoua 2328700e3e7SMoni Shoua static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev, 2338700e3e7SMoni Shoua u8 port_num) 2348700e3e7SMoni Shoua { 2358700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2368700e3e7SMoni Shoua 2378700e3e7SMoni Shoua return rxe->ifc_ops->link_layer(rxe, port_num); 2388700e3e7SMoni Shoua } 2398700e3e7SMoni Shoua 2408700e3e7SMoni Shoua static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev, 2418700e3e7SMoni Shoua struct ib_udata *udata) 2428700e3e7SMoni Shoua { 2438700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2448700e3e7SMoni Shoua struct rxe_ucontext *uc; 2458700e3e7SMoni Shoua 2468700e3e7SMoni Shoua uc = rxe_alloc(&rxe->uc_pool); 2478700e3e7SMoni Shoua return uc ? &uc->ibuc : ERR_PTR(-ENOMEM); 2488700e3e7SMoni Shoua } 2498700e3e7SMoni Shoua 2508700e3e7SMoni Shoua static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc) 2518700e3e7SMoni Shoua { 2528700e3e7SMoni Shoua struct rxe_ucontext *uc = to_ruc(ibuc); 2538700e3e7SMoni Shoua 2548700e3e7SMoni Shoua rxe_drop_ref(uc); 2558700e3e7SMoni Shoua return 0; 2568700e3e7SMoni Shoua } 2578700e3e7SMoni Shoua 2588700e3e7SMoni Shoua static int rxe_port_immutable(struct ib_device *dev, u8 port_num, 2598700e3e7SMoni Shoua struct ib_port_immutable *immutable) 2608700e3e7SMoni Shoua { 2618700e3e7SMoni Shoua int err; 2628700e3e7SMoni Shoua struct ib_port_attr attr; 2638700e3e7SMoni Shoua 2648700e3e7SMoni Shoua err = rxe_query_port(dev, port_num, &attr); 2658700e3e7SMoni Shoua if (err) 2668700e3e7SMoni Shoua return err; 2678700e3e7SMoni Shoua 2688700e3e7SMoni Shoua immutable->pkey_tbl_len = attr.pkey_tbl_len; 2698700e3e7SMoni Shoua immutable->gid_tbl_len = attr.gid_tbl_len; 2708700e3e7SMoni Shoua immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2718700e3e7SMoni Shoua immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2728700e3e7SMoni Shoua 2738700e3e7SMoni Shoua return 0; 2748700e3e7SMoni Shoua } 2758700e3e7SMoni Shoua 2768700e3e7SMoni Shoua static struct ib_pd *rxe_alloc_pd(struct ib_device *dev, 2778700e3e7SMoni Shoua struct ib_ucontext *context, 2788700e3e7SMoni Shoua struct ib_udata *udata) 2798700e3e7SMoni Shoua { 2808700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2818700e3e7SMoni Shoua struct rxe_pd *pd; 2828700e3e7SMoni Shoua 2838700e3e7SMoni Shoua pd = rxe_alloc(&rxe->pd_pool); 2848700e3e7SMoni Shoua return pd ? &pd->ibpd : ERR_PTR(-ENOMEM); 2858700e3e7SMoni Shoua } 2868700e3e7SMoni Shoua 2878700e3e7SMoni Shoua static int rxe_dealloc_pd(struct ib_pd *ibpd) 2888700e3e7SMoni Shoua { 2898700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 2908700e3e7SMoni Shoua 2918700e3e7SMoni Shoua rxe_drop_ref(pd); 2928700e3e7SMoni Shoua return 0; 2938700e3e7SMoni Shoua } 2948700e3e7SMoni Shoua 2958700e3e7SMoni Shoua static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr, 2968700e3e7SMoni Shoua struct rxe_av *av) 2978700e3e7SMoni Shoua { 2988700e3e7SMoni Shoua int err; 2998700e3e7SMoni Shoua union ib_gid sgid; 3008700e3e7SMoni Shoua struct ib_gid_attr sgid_attr; 3018700e3e7SMoni Shoua 3028700e3e7SMoni Shoua err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num, 3038700e3e7SMoni Shoua attr->grh.sgid_index, &sgid, 3048700e3e7SMoni Shoua &sgid_attr); 3058700e3e7SMoni Shoua if (err) { 3068700e3e7SMoni Shoua pr_err("Failed to query sgid. err = %d\n", err); 3078700e3e7SMoni Shoua return err; 3088700e3e7SMoni Shoua } 3098700e3e7SMoni Shoua 3108700e3e7SMoni Shoua err = rxe_av_from_attr(rxe, attr->port_num, av, attr); 3118700e3e7SMoni Shoua if (!err) 3128700e3e7SMoni Shoua err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid); 3138700e3e7SMoni Shoua 3148700e3e7SMoni Shoua if (sgid_attr.ndev) 3158700e3e7SMoni Shoua dev_put(sgid_attr.ndev); 3168700e3e7SMoni Shoua return err; 3178700e3e7SMoni Shoua } 3188700e3e7SMoni Shoua 3198700e3e7SMoni Shoua static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr) 3208700e3e7SMoni Shoua { 3218700e3e7SMoni Shoua int err; 3228700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 3238700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 3248700e3e7SMoni Shoua struct rxe_ah *ah; 3258700e3e7SMoni Shoua 3268700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 3278700e3e7SMoni Shoua if (err) 3288700e3e7SMoni Shoua goto err1; 3298700e3e7SMoni Shoua 3308700e3e7SMoni Shoua ah = rxe_alloc(&rxe->ah_pool); 3318700e3e7SMoni Shoua if (!ah) { 3328700e3e7SMoni Shoua err = -ENOMEM; 3338700e3e7SMoni Shoua goto err1; 3348700e3e7SMoni Shoua } 3358700e3e7SMoni Shoua 3368700e3e7SMoni Shoua rxe_add_ref(pd); 3378700e3e7SMoni Shoua ah->pd = pd; 3388700e3e7SMoni Shoua 3398700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3408700e3e7SMoni Shoua if (err) 3418700e3e7SMoni Shoua goto err2; 3428700e3e7SMoni Shoua 3438700e3e7SMoni Shoua return &ah->ibah; 3448700e3e7SMoni Shoua 3458700e3e7SMoni Shoua err2: 3468700e3e7SMoni Shoua rxe_drop_ref(pd); 3478700e3e7SMoni Shoua rxe_drop_ref(ah); 3488700e3e7SMoni Shoua err1: 3498700e3e7SMoni Shoua return ERR_PTR(err); 3508700e3e7SMoni Shoua } 3518700e3e7SMoni Shoua 3528700e3e7SMoni Shoua static int rxe_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr) 3538700e3e7SMoni Shoua { 3548700e3e7SMoni Shoua int err; 3558700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibah->device); 3568700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3578700e3e7SMoni Shoua 3588700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 3598700e3e7SMoni Shoua if (err) 3608700e3e7SMoni Shoua return err; 3618700e3e7SMoni Shoua 3628700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3638700e3e7SMoni Shoua if (err) 3648700e3e7SMoni Shoua return err; 3658700e3e7SMoni Shoua 3668700e3e7SMoni Shoua return 0; 3678700e3e7SMoni Shoua } 3688700e3e7SMoni Shoua 3698700e3e7SMoni Shoua static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr) 3708700e3e7SMoni Shoua { 3718700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibah->device); 3728700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3738700e3e7SMoni Shoua 3748700e3e7SMoni Shoua rxe_av_to_attr(rxe, &ah->av, attr); 3758700e3e7SMoni Shoua return 0; 3768700e3e7SMoni Shoua } 3778700e3e7SMoni Shoua 3788700e3e7SMoni Shoua static int rxe_destroy_ah(struct ib_ah *ibah) 3798700e3e7SMoni Shoua { 3808700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3818700e3e7SMoni Shoua 3828700e3e7SMoni Shoua rxe_drop_ref(ah->pd); 3838700e3e7SMoni Shoua rxe_drop_ref(ah); 3848700e3e7SMoni Shoua return 0; 3858700e3e7SMoni Shoua } 3868700e3e7SMoni Shoua 3878700e3e7SMoni Shoua static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr) 3888700e3e7SMoni Shoua { 3898700e3e7SMoni Shoua int err; 3908700e3e7SMoni Shoua int i; 3918700e3e7SMoni Shoua u32 length; 3928700e3e7SMoni Shoua struct rxe_recv_wqe *recv_wqe; 3938700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 3948700e3e7SMoni Shoua 3958700e3e7SMoni Shoua if (unlikely(queue_full(rq->queue))) { 3968700e3e7SMoni Shoua err = -ENOMEM; 3978700e3e7SMoni Shoua goto err1; 3988700e3e7SMoni Shoua } 3998700e3e7SMoni Shoua 4008700e3e7SMoni Shoua if (unlikely(num_sge > rq->max_sge)) { 4018700e3e7SMoni Shoua err = -EINVAL; 4028700e3e7SMoni Shoua goto err1; 4038700e3e7SMoni Shoua } 4048700e3e7SMoni Shoua 4058700e3e7SMoni Shoua length = 0; 4068700e3e7SMoni Shoua for (i = 0; i < num_sge; i++) 4078700e3e7SMoni Shoua length += ibwr->sg_list[i].length; 4088700e3e7SMoni Shoua 4098700e3e7SMoni Shoua recv_wqe = producer_addr(rq->queue); 4108700e3e7SMoni Shoua recv_wqe->wr_id = ibwr->wr_id; 4118700e3e7SMoni Shoua recv_wqe->num_sge = num_sge; 4128700e3e7SMoni Shoua 4138700e3e7SMoni Shoua memcpy(recv_wqe->dma.sge, ibwr->sg_list, 4148700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 4158700e3e7SMoni Shoua 4168700e3e7SMoni Shoua recv_wqe->dma.length = length; 4178700e3e7SMoni Shoua recv_wqe->dma.resid = length; 4188700e3e7SMoni Shoua recv_wqe->dma.num_sge = num_sge; 4198700e3e7SMoni Shoua recv_wqe->dma.cur_sge = 0; 4208700e3e7SMoni Shoua recv_wqe->dma.sge_offset = 0; 4218700e3e7SMoni Shoua 4228700e3e7SMoni Shoua /* make sure all changes to the work queue are written before we 4238700e3e7SMoni Shoua * update the producer pointer 4248700e3e7SMoni Shoua */ 4258700e3e7SMoni Shoua smp_wmb(); 4268700e3e7SMoni Shoua 4278700e3e7SMoni Shoua advance_producer(rq->queue); 4288700e3e7SMoni Shoua return 0; 4298700e3e7SMoni Shoua 4308700e3e7SMoni Shoua err1: 4318700e3e7SMoni Shoua return err; 4328700e3e7SMoni Shoua } 4338700e3e7SMoni Shoua 4348700e3e7SMoni Shoua static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd, 4358700e3e7SMoni Shoua struct ib_srq_init_attr *init, 4368700e3e7SMoni Shoua struct ib_udata *udata) 4378700e3e7SMoni Shoua { 4388700e3e7SMoni Shoua int err; 4398700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 4408700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 4418700e3e7SMoni Shoua struct rxe_srq *srq; 4428700e3e7SMoni Shoua struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL; 4438700e3e7SMoni Shoua 4448700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK); 4458700e3e7SMoni Shoua if (err) 4468700e3e7SMoni Shoua goto err1; 4478700e3e7SMoni Shoua 4488700e3e7SMoni Shoua srq = rxe_alloc(&rxe->srq_pool); 4498700e3e7SMoni Shoua if (!srq) { 4508700e3e7SMoni Shoua err = -ENOMEM; 4518700e3e7SMoni Shoua goto err1; 4528700e3e7SMoni Shoua } 4538700e3e7SMoni Shoua 4548700e3e7SMoni Shoua rxe_add_index(srq); 4558700e3e7SMoni Shoua rxe_add_ref(pd); 4568700e3e7SMoni Shoua srq->pd = pd; 4578700e3e7SMoni Shoua 4588700e3e7SMoni Shoua err = rxe_srq_from_init(rxe, srq, init, context, udata); 4598700e3e7SMoni Shoua if (err) 4608700e3e7SMoni Shoua goto err2; 4618700e3e7SMoni Shoua 4628700e3e7SMoni Shoua return &srq->ibsrq; 4638700e3e7SMoni Shoua 4648700e3e7SMoni Shoua err2: 4658700e3e7SMoni Shoua rxe_drop_ref(pd); 4668700e3e7SMoni Shoua rxe_drop_index(srq); 4678700e3e7SMoni Shoua rxe_drop_ref(srq); 4688700e3e7SMoni Shoua err1: 4698700e3e7SMoni Shoua return ERR_PTR(err); 4708700e3e7SMoni Shoua } 4718700e3e7SMoni Shoua 4728700e3e7SMoni Shoua static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 4738700e3e7SMoni Shoua enum ib_srq_attr_mask mask, 4748700e3e7SMoni Shoua struct ib_udata *udata) 4758700e3e7SMoni Shoua { 4768700e3e7SMoni Shoua int err; 4778700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4788700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibsrq->device); 4798700e3e7SMoni Shoua 4808700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, srq, attr, mask); 4818700e3e7SMoni Shoua if (err) 4828700e3e7SMoni Shoua goto err1; 4838700e3e7SMoni Shoua 4848700e3e7SMoni Shoua err = rxe_srq_from_attr(rxe, srq, attr, mask, udata); 4858700e3e7SMoni Shoua if (err) 4868700e3e7SMoni Shoua goto err1; 4878700e3e7SMoni Shoua 4888700e3e7SMoni Shoua return 0; 4898700e3e7SMoni Shoua 4908700e3e7SMoni Shoua err1: 4918700e3e7SMoni Shoua return err; 4928700e3e7SMoni Shoua } 4938700e3e7SMoni Shoua 4948700e3e7SMoni Shoua static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) 4958700e3e7SMoni Shoua { 4968700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4978700e3e7SMoni Shoua 4988700e3e7SMoni Shoua if (srq->error) 4998700e3e7SMoni Shoua return -EINVAL; 5008700e3e7SMoni Shoua 5018700e3e7SMoni Shoua attr->max_wr = srq->rq.queue->buf->index_mask; 5028700e3e7SMoni Shoua attr->max_sge = srq->rq.max_sge; 5038700e3e7SMoni Shoua attr->srq_limit = srq->limit; 5048700e3e7SMoni Shoua return 0; 5058700e3e7SMoni Shoua } 5068700e3e7SMoni Shoua 5078700e3e7SMoni Shoua static int rxe_destroy_srq(struct ib_srq *ibsrq) 5088700e3e7SMoni Shoua { 5098700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 5108700e3e7SMoni Shoua 5118700e3e7SMoni Shoua if (srq->rq.queue) 5128700e3e7SMoni Shoua rxe_queue_cleanup(srq->rq.queue); 5138700e3e7SMoni Shoua 5148700e3e7SMoni Shoua rxe_drop_ref(srq->pd); 5158700e3e7SMoni Shoua rxe_drop_index(srq); 5168700e3e7SMoni Shoua rxe_drop_ref(srq); 5178700e3e7SMoni Shoua 5188700e3e7SMoni Shoua return 0; 5198700e3e7SMoni Shoua } 5208700e3e7SMoni Shoua 5218700e3e7SMoni Shoua static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 5228700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 5238700e3e7SMoni Shoua { 5248700e3e7SMoni Shoua int err = 0; 5258700e3e7SMoni Shoua unsigned long flags; 5268700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 5278700e3e7SMoni Shoua 5288700e3e7SMoni Shoua spin_lock_irqsave(&srq->rq.producer_lock, flags); 5298700e3e7SMoni Shoua 5308700e3e7SMoni Shoua while (wr) { 5318700e3e7SMoni Shoua err = post_one_recv(&srq->rq, wr); 5328700e3e7SMoni Shoua if (unlikely(err)) 5338700e3e7SMoni Shoua break; 5348700e3e7SMoni Shoua wr = wr->next; 5358700e3e7SMoni Shoua } 5368700e3e7SMoni Shoua 5378700e3e7SMoni Shoua spin_unlock_irqrestore(&srq->rq.producer_lock, flags); 5388700e3e7SMoni Shoua 5398700e3e7SMoni Shoua if (err) 5408700e3e7SMoni Shoua *bad_wr = wr; 5418700e3e7SMoni Shoua 5428700e3e7SMoni Shoua return err; 5438700e3e7SMoni Shoua } 5448700e3e7SMoni Shoua 5458700e3e7SMoni Shoua static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd, 5468700e3e7SMoni Shoua struct ib_qp_init_attr *init, 5478700e3e7SMoni Shoua struct ib_udata *udata) 5488700e3e7SMoni Shoua { 5498700e3e7SMoni Shoua int err; 5508700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 5518700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 5528700e3e7SMoni Shoua struct rxe_qp *qp; 5538700e3e7SMoni Shoua 5548700e3e7SMoni Shoua err = rxe_qp_chk_init(rxe, init); 5558700e3e7SMoni Shoua if (err) 5568700e3e7SMoni Shoua goto err1; 5578700e3e7SMoni Shoua 5588700e3e7SMoni Shoua qp = rxe_alloc(&rxe->qp_pool); 5598700e3e7SMoni Shoua if (!qp) { 5608700e3e7SMoni Shoua err = -ENOMEM; 5618700e3e7SMoni Shoua goto err1; 5628700e3e7SMoni Shoua } 5638700e3e7SMoni Shoua 5648700e3e7SMoni Shoua if (udata) { 5658700e3e7SMoni Shoua if (udata->inlen) { 5668700e3e7SMoni Shoua err = -EINVAL; 5675b9ea16cSAndrew Boyer goto err2; 5688700e3e7SMoni Shoua } 5698700e3e7SMoni Shoua qp->is_user = 1; 5708700e3e7SMoni Shoua } 5718700e3e7SMoni Shoua 5728700e3e7SMoni Shoua rxe_add_index(qp); 5738700e3e7SMoni Shoua 5748700e3e7SMoni Shoua err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd); 5758700e3e7SMoni Shoua if (err) 5765b9ea16cSAndrew Boyer goto err3; 5778700e3e7SMoni Shoua 5788700e3e7SMoni Shoua return &qp->ibqp; 5798700e3e7SMoni Shoua 5805b9ea16cSAndrew Boyer err3: 5818700e3e7SMoni Shoua rxe_drop_index(qp); 5825b9ea16cSAndrew Boyer err2: 5838700e3e7SMoni Shoua rxe_drop_ref(qp); 5848700e3e7SMoni Shoua err1: 5858700e3e7SMoni Shoua return ERR_PTR(err); 5868700e3e7SMoni Shoua } 5878700e3e7SMoni Shoua 5888700e3e7SMoni Shoua static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 5898700e3e7SMoni Shoua int mask, struct ib_udata *udata) 5908700e3e7SMoni Shoua { 5918700e3e7SMoni Shoua int err; 5928700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 5938700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 5948700e3e7SMoni Shoua 5958700e3e7SMoni Shoua err = rxe_qp_chk_attr(rxe, qp, attr, mask); 5968700e3e7SMoni Shoua if (err) 5978700e3e7SMoni Shoua goto err1; 5988700e3e7SMoni Shoua 5998700e3e7SMoni Shoua err = rxe_qp_from_attr(qp, attr, mask, udata); 6008700e3e7SMoni Shoua if (err) 6018700e3e7SMoni Shoua goto err1; 6028700e3e7SMoni Shoua 6038700e3e7SMoni Shoua return 0; 6048700e3e7SMoni Shoua 6058700e3e7SMoni Shoua err1: 6068700e3e7SMoni Shoua return err; 6078700e3e7SMoni Shoua } 6088700e3e7SMoni Shoua 6098700e3e7SMoni Shoua static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 6108700e3e7SMoni Shoua int mask, struct ib_qp_init_attr *init) 6118700e3e7SMoni Shoua { 6128700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 6138700e3e7SMoni Shoua 6148700e3e7SMoni Shoua rxe_qp_to_init(qp, init); 6158700e3e7SMoni Shoua rxe_qp_to_attr(qp, attr, mask); 6168700e3e7SMoni Shoua 6178700e3e7SMoni Shoua return 0; 6188700e3e7SMoni Shoua } 6198700e3e7SMoni Shoua 6208700e3e7SMoni Shoua static int rxe_destroy_qp(struct ib_qp *ibqp) 6218700e3e7SMoni Shoua { 6228700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 6238700e3e7SMoni Shoua 6248700e3e7SMoni Shoua rxe_qp_destroy(qp); 6258700e3e7SMoni Shoua rxe_drop_index(qp); 6268700e3e7SMoni Shoua rxe_drop_ref(qp); 6278700e3e7SMoni Shoua return 0; 6288700e3e7SMoni Shoua } 6298700e3e7SMoni Shoua 6308700e3e7SMoni Shoua static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr, 6318700e3e7SMoni Shoua unsigned int mask, unsigned int length) 6328700e3e7SMoni Shoua { 6338700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 6348700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 6358700e3e7SMoni Shoua 6368700e3e7SMoni Shoua if (unlikely(num_sge > sq->max_sge)) 6378700e3e7SMoni Shoua goto err1; 6388700e3e7SMoni Shoua 6398700e3e7SMoni Shoua if (unlikely(mask & WR_ATOMIC_MASK)) { 6408700e3e7SMoni Shoua if (length < 8) 6418700e3e7SMoni Shoua goto err1; 6428700e3e7SMoni Shoua 6438700e3e7SMoni Shoua if (atomic_wr(ibwr)->remote_addr & 0x7) 6448700e3e7SMoni Shoua goto err1; 6458700e3e7SMoni Shoua } 6468700e3e7SMoni Shoua 6478700e3e7SMoni Shoua if (unlikely((ibwr->send_flags & IB_SEND_INLINE) && 6488700e3e7SMoni Shoua (length > sq->max_inline))) 6498700e3e7SMoni Shoua goto err1; 6508700e3e7SMoni Shoua 6518700e3e7SMoni Shoua return 0; 6528700e3e7SMoni Shoua 6538700e3e7SMoni Shoua err1: 6548700e3e7SMoni Shoua return -EINVAL; 6558700e3e7SMoni Shoua } 6568700e3e7SMoni Shoua 6578700e3e7SMoni Shoua static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr, 6588700e3e7SMoni Shoua struct ib_send_wr *ibwr) 6598700e3e7SMoni Shoua { 6608700e3e7SMoni Shoua wr->wr_id = ibwr->wr_id; 6618700e3e7SMoni Shoua wr->num_sge = ibwr->num_sge; 6628700e3e7SMoni Shoua wr->opcode = ibwr->opcode; 6638700e3e7SMoni Shoua wr->send_flags = ibwr->send_flags; 6648700e3e7SMoni Shoua 6658700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 6668700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 6678700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) { 6688700e3e7SMoni Shoua wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn; 6698700e3e7SMoni Shoua wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey; 6708700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_GSI) 6718700e3e7SMoni Shoua wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index; 6728700e3e7SMoni Shoua if (wr->opcode == IB_WR_SEND_WITH_IMM) 6738700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6748700e3e7SMoni Shoua } else { 6758700e3e7SMoni Shoua switch (wr->opcode) { 6768700e3e7SMoni Shoua case IB_WR_RDMA_WRITE_WITH_IMM: 6778700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6788700e3e7SMoni Shoua case IB_WR_RDMA_READ: 6798700e3e7SMoni Shoua case IB_WR_RDMA_WRITE: 6808700e3e7SMoni Shoua wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr; 6818700e3e7SMoni Shoua wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey; 6828700e3e7SMoni Shoua break; 6838700e3e7SMoni Shoua case IB_WR_SEND_WITH_IMM: 6848700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6858700e3e7SMoni Shoua break; 6868700e3e7SMoni Shoua case IB_WR_SEND_WITH_INV: 6878700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 6888700e3e7SMoni Shoua break; 6898700e3e7SMoni Shoua case IB_WR_ATOMIC_CMP_AND_SWP: 6908700e3e7SMoni Shoua case IB_WR_ATOMIC_FETCH_AND_ADD: 6918700e3e7SMoni Shoua wr->wr.atomic.remote_addr = 6928700e3e7SMoni Shoua atomic_wr(ibwr)->remote_addr; 6938700e3e7SMoni Shoua wr->wr.atomic.compare_add = 6948700e3e7SMoni Shoua atomic_wr(ibwr)->compare_add; 6958700e3e7SMoni Shoua wr->wr.atomic.swap = atomic_wr(ibwr)->swap; 6968700e3e7SMoni Shoua wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey; 6978700e3e7SMoni Shoua break; 6988700e3e7SMoni Shoua case IB_WR_LOCAL_INV: 6998700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 7008700e3e7SMoni Shoua break; 7018700e3e7SMoni Shoua case IB_WR_REG_MR: 7028700e3e7SMoni Shoua wr->wr.reg.mr = reg_wr(ibwr)->mr; 7038700e3e7SMoni Shoua wr->wr.reg.key = reg_wr(ibwr)->key; 7048700e3e7SMoni Shoua wr->wr.reg.access = reg_wr(ibwr)->access; 7058700e3e7SMoni Shoua break; 7068700e3e7SMoni Shoua default: 7078700e3e7SMoni Shoua break; 7088700e3e7SMoni Shoua } 7098700e3e7SMoni Shoua } 7108700e3e7SMoni Shoua } 7118700e3e7SMoni Shoua 7128700e3e7SMoni Shoua static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr, 7138700e3e7SMoni Shoua unsigned int mask, unsigned int length, 7148700e3e7SMoni Shoua struct rxe_send_wqe *wqe) 7158700e3e7SMoni Shoua { 7168700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 7178700e3e7SMoni Shoua struct ib_sge *sge; 7188700e3e7SMoni Shoua int i; 7198700e3e7SMoni Shoua u8 *p; 7208700e3e7SMoni Shoua 7218700e3e7SMoni Shoua init_send_wr(qp, &wqe->wr, ibwr); 7228700e3e7SMoni Shoua 7238700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 7248700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 7258700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) 7268700e3e7SMoni Shoua memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av)); 7278700e3e7SMoni Shoua 7288700e3e7SMoni Shoua if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) { 7298700e3e7SMoni Shoua p = wqe->dma.inline_data; 7308700e3e7SMoni Shoua 7318700e3e7SMoni Shoua sge = ibwr->sg_list; 7328700e3e7SMoni Shoua for (i = 0; i < num_sge; i++, sge++) { 7338700e3e7SMoni Shoua if (qp->is_user && copy_from_user(p, (__user void *) 7348700e3e7SMoni Shoua (uintptr_t)sge->addr, sge->length)) 7358700e3e7SMoni Shoua return -EFAULT; 7368700e3e7SMoni Shoua 7378700e3e7SMoni Shoua else if (!qp->is_user) 7388700e3e7SMoni Shoua memcpy(p, (void *)(uintptr_t)sge->addr, 7398700e3e7SMoni Shoua sge->length); 7408700e3e7SMoni Shoua 7418700e3e7SMoni Shoua p += sge->length; 7428700e3e7SMoni Shoua } 7438700e3e7SMoni Shoua } else if (mask & WR_REG_MASK) { 7448700e3e7SMoni Shoua wqe->mask = mask; 7458700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7468700e3e7SMoni Shoua return 0; 7478700e3e7SMoni Shoua } else 7488700e3e7SMoni Shoua memcpy(wqe->dma.sge, ibwr->sg_list, 7498700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 7508700e3e7SMoni Shoua 7518700e3e7SMoni Shoua wqe->iova = (mask & WR_ATOMIC_MASK) ? 7528700e3e7SMoni Shoua atomic_wr(ibwr)->remote_addr : 7538700e3e7SMoni Shoua rdma_wr(ibwr)->remote_addr; 7548700e3e7SMoni Shoua wqe->mask = mask; 7558700e3e7SMoni Shoua wqe->dma.length = length; 7568700e3e7SMoni Shoua wqe->dma.resid = length; 7578700e3e7SMoni Shoua wqe->dma.num_sge = num_sge; 7588700e3e7SMoni Shoua wqe->dma.cur_sge = 0; 7598700e3e7SMoni Shoua wqe->dma.sge_offset = 0; 7608700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7618700e3e7SMoni Shoua wqe->ssn = atomic_add_return(1, &qp->ssn); 7628700e3e7SMoni Shoua 7638700e3e7SMoni Shoua return 0; 7648700e3e7SMoni Shoua } 7658700e3e7SMoni Shoua 7668700e3e7SMoni Shoua static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr, 767e404f945SParav Pandit unsigned int mask, u32 length) 7688700e3e7SMoni Shoua { 7698700e3e7SMoni Shoua int err; 7708700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 7718700e3e7SMoni Shoua struct rxe_send_wqe *send_wqe; 7728700e3e7SMoni Shoua unsigned long flags; 7738700e3e7SMoni Shoua 7748700e3e7SMoni Shoua err = validate_send_wr(qp, ibwr, mask, length); 7758700e3e7SMoni Shoua if (err) 7768700e3e7SMoni Shoua return err; 7778700e3e7SMoni Shoua 7788700e3e7SMoni Shoua spin_lock_irqsave(&qp->sq.sq_lock, flags); 7798700e3e7SMoni Shoua 7808700e3e7SMoni Shoua if (unlikely(queue_full(sq->queue))) { 7818700e3e7SMoni Shoua err = -ENOMEM; 7828700e3e7SMoni Shoua goto err1; 7838700e3e7SMoni Shoua } 7848700e3e7SMoni Shoua 7858700e3e7SMoni Shoua send_wqe = producer_addr(sq->queue); 7868700e3e7SMoni Shoua 7878700e3e7SMoni Shoua err = init_send_wqe(qp, ibwr, mask, length, send_wqe); 7888700e3e7SMoni Shoua if (unlikely(err)) 7898700e3e7SMoni Shoua goto err1; 7908700e3e7SMoni Shoua 7918700e3e7SMoni Shoua /* 7928700e3e7SMoni Shoua * make sure all changes to the work queue are 7938700e3e7SMoni Shoua * written before we update the producer pointer 7948700e3e7SMoni Shoua */ 7958700e3e7SMoni Shoua smp_wmb(); 7968700e3e7SMoni Shoua 7978700e3e7SMoni Shoua advance_producer(sq->queue); 7988700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 7998700e3e7SMoni Shoua 8008700e3e7SMoni Shoua return 0; 8018700e3e7SMoni Shoua 8028700e3e7SMoni Shoua err1: 8038700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 8048700e3e7SMoni Shoua return err; 8058700e3e7SMoni Shoua } 8068700e3e7SMoni Shoua 807063af595SParav Pandit static int rxe_post_send_kernel(struct rxe_qp *qp, struct ib_send_wr *wr, 8088700e3e7SMoni Shoua struct ib_send_wr **bad_wr) 8098700e3e7SMoni Shoua { 8108700e3e7SMoni Shoua int err = 0; 8118700e3e7SMoni Shoua unsigned int mask; 8128700e3e7SMoni Shoua unsigned int length = 0; 8138700e3e7SMoni Shoua int i; 8148700e3e7SMoni Shoua int must_sched; 8158700e3e7SMoni Shoua 8168700e3e7SMoni Shoua while (wr) { 8178700e3e7SMoni Shoua mask = wr_opcode_mask(wr->opcode, qp); 8188700e3e7SMoni Shoua if (unlikely(!mask)) { 8198700e3e7SMoni Shoua err = -EINVAL; 8208700e3e7SMoni Shoua *bad_wr = wr; 8218700e3e7SMoni Shoua break; 8228700e3e7SMoni Shoua } 8238700e3e7SMoni Shoua 8248700e3e7SMoni Shoua if (unlikely((wr->send_flags & IB_SEND_INLINE) && 8258700e3e7SMoni Shoua !(mask & WR_INLINE_MASK))) { 8268700e3e7SMoni Shoua err = -EINVAL; 8278700e3e7SMoni Shoua *bad_wr = wr; 8288700e3e7SMoni Shoua break; 8298700e3e7SMoni Shoua } 8308700e3e7SMoni Shoua 8318700e3e7SMoni Shoua length = 0; 8328700e3e7SMoni Shoua for (i = 0; i < wr->num_sge; i++) 8338700e3e7SMoni Shoua length += wr->sg_list[i].length; 8348700e3e7SMoni Shoua 8358700e3e7SMoni Shoua err = post_one_send(qp, wr, mask, length); 8368700e3e7SMoni Shoua 8378700e3e7SMoni Shoua if (err) { 8388700e3e7SMoni Shoua *bad_wr = wr; 8398700e3e7SMoni Shoua break; 8408700e3e7SMoni Shoua } 8418700e3e7SMoni Shoua wr = wr->next; 8428700e3e7SMoni Shoua } 8438700e3e7SMoni Shoua 8448700e3e7SMoni Shoua /* 8458700e3e7SMoni Shoua * Must sched in case of GSI QP because ib_send_mad() hold irq lock, 8468700e3e7SMoni Shoua * and the requester call ip_local_out_sk() that takes spin_lock_bh. 8478700e3e7SMoni Shoua */ 8488700e3e7SMoni Shoua must_sched = (qp_type(qp) == IB_QPT_GSI) || 8498700e3e7SMoni Shoua (queue_count(qp->sq.queue) > 1); 8508700e3e7SMoni Shoua 8518700e3e7SMoni Shoua rxe_run_task(&qp->req.task, must_sched); 8528700e3e7SMoni Shoua 8538700e3e7SMoni Shoua return err; 8548700e3e7SMoni Shoua } 8558700e3e7SMoni Shoua 856063af595SParav Pandit static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 857063af595SParav Pandit struct ib_send_wr **bad_wr) 858063af595SParav Pandit { 859063af595SParav Pandit struct rxe_qp *qp = to_rqp(ibqp); 860063af595SParav Pandit 861063af595SParav Pandit if (unlikely(!qp->valid)) { 862063af595SParav Pandit *bad_wr = wr; 863063af595SParav Pandit return -EINVAL; 864063af595SParav Pandit } 865063af595SParav Pandit 866063af595SParav Pandit if (unlikely(qp->req.state < QP_STATE_READY)) { 867063af595SParav Pandit *bad_wr = wr; 868063af595SParav Pandit return -EINVAL; 869063af595SParav Pandit } 870063af595SParav Pandit 871063af595SParav Pandit if (qp->is_user) { 872063af595SParav Pandit /* Utilize process context to do protocol processing */ 873063af595SParav Pandit rxe_run_task(&qp->req.task, 0); 874063af595SParav Pandit return 0; 875063af595SParav Pandit } else 876063af595SParav Pandit return rxe_post_send_kernel(qp, wr, bad_wr); 877063af595SParav Pandit } 878063af595SParav Pandit 8798700e3e7SMoni Shoua static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 8808700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 8818700e3e7SMoni Shoua { 8828700e3e7SMoni Shoua int err = 0; 8838700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 8848700e3e7SMoni Shoua struct rxe_rq *rq = &qp->rq; 8858700e3e7SMoni Shoua unsigned long flags; 8868700e3e7SMoni Shoua 8878700e3e7SMoni Shoua if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) { 8888700e3e7SMoni Shoua *bad_wr = wr; 8898700e3e7SMoni Shoua err = -EINVAL; 8908700e3e7SMoni Shoua goto err1; 8918700e3e7SMoni Shoua } 8928700e3e7SMoni Shoua 8938700e3e7SMoni Shoua if (unlikely(qp->srq)) { 8948700e3e7SMoni Shoua *bad_wr = wr; 8958700e3e7SMoni Shoua err = -EINVAL; 8968700e3e7SMoni Shoua goto err1; 8978700e3e7SMoni Shoua } 8988700e3e7SMoni Shoua 8998700e3e7SMoni Shoua spin_lock_irqsave(&rq->producer_lock, flags); 9008700e3e7SMoni Shoua 9018700e3e7SMoni Shoua while (wr) { 9028700e3e7SMoni Shoua err = post_one_recv(rq, wr); 9038700e3e7SMoni Shoua if (unlikely(err)) { 9048700e3e7SMoni Shoua *bad_wr = wr; 9058700e3e7SMoni Shoua break; 9068700e3e7SMoni Shoua } 9078700e3e7SMoni Shoua wr = wr->next; 9088700e3e7SMoni Shoua } 9098700e3e7SMoni Shoua 9108700e3e7SMoni Shoua spin_unlock_irqrestore(&rq->producer_lock, flags); 9118700e3e7SMoni Shoua 9128700e3e7SMoni Shoua err1: 9138700e3e7SMoni Shoua return err; 9148700e3e7SMoni Shoua } 9158700e3e7SMoni Shoua 9168700e3e7SMoni Shoua static struct ib_cq *rxe_create_cq(struct ib_device *dev, 9178700e3e7SMoni Shoua const struct ib_cq_init_attr *attr, 9188700e3e7SMoni Shoua struct ib_ucontext *context, 9198700e3e7SMoni Shoua struct ib_udata *udata) 9208700e3e7SMoni Shoua { 9218700e3e7SMoni Shoua int err; 9228700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 9238700e3e7SMoni Shoua struct rxe_cq *cq; 9248700e3e7SMoni Shoua 9258700e3e7SMoni Shoua if (attr->flags) 9268700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 9278700e3e7SMoni Shoua 9288700e3e7SMoni Shoua err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata); 9298700e3e7SMoni Shoua if (err) 9308700e3e7SMoni Shoua goto err1; 9318700e3e7SMoni Shoua 9328700e3e7SMoni Shoua cq = rxe_alloc(&rxe->cq_pool); 9338700e3e7SMoni Shoua if (!cq) { 9348700e3e7SMoni Shoua err = -ENOMEM; 9358700e3e7SMoni Shoua goto err1; 9368700e3e7SMoni Shoua } 9378700e3e7SMoni Shoua 9388700e3e7SMoni Shoua err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector, 9398700e3e7SMoni Shoua context, udata); 9408700e3e7SMoni Shoua if (err) 9418700e3e7SMoni Shoua goto err2; 9428700e3e7SMoni Shoua 9438700e3e7SMoni Shoua return &cq->ibcq; 9448700e3e7SMoni Shoua 9458700e3e7SMoni Shoua err2: 9468700e3e7SMoni Shoua rxe_drop_ref(cq); 9478700e3e7SMoni Shoua err1: 9488700e3e7SMoni Shoua return ERR_PTR(err); 9498700e3e7SMoni Shoua } 9508700e3e7SMoni Shoua 9518700e3e7SMoni Shoua static int rxe_destroy_cq(struct ib_cq *ibcq) 9528700e3e7SMoni Shoua { 9538700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9548700e3e7SMoni Shoua 9558700e3e7SMoni Shoua rxe_drop_ref(cq); 9568700e3e7SMoni Shoua return 0; 9578700e3e7SMoni Shoua } 9588700e3e7SMoni Shoua 9598700e3e7SMoni Shoua static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 9608700e3e7SMoni Shoua { 9618700e3e7SMoni Shoua int err; 9628700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9638700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibcq->device); 9648700e3e7SMoni Shoua 9658700e3e7SMoni Shoua err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata); 9668700e3e7SMoni Shoua if (err) 9678700e3e7SMoni Shoua goto err1; 9688700e3e7SMoni Shoua 9698700e3e7SMoni Shoua err = rxe_cq_resize_queue(cq, cqe, udata); 9708700e3e7SMoni Shoua if (err) 9718700e3e7SMoni Shoua goto err1; 9728700e3e7SMoni Shoua 9738700e3e7SMoni Shoua return 0; 9748700e3e7SMoni Shoua 9758700e3e7SMoni Shoua err1: 9768700e3e7SMoni Shoua return err; 9778700e3e7SMoni Shoua } 9788700e3e7SMoni Shoua 9798700e3e7SMoni Shoua static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 9808700e3e7SMoni Shoua { 9818700e3e7SMoni Shoua int i; 9828700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9838700e3e7SMoni Shoua struct rxe_cqe *cqe; 9848700e3e7SMoni Shoua unsigned long flags; 9858700e3e7SMoni Shoua 9868700e3e7SMoni Shoua spin_lock_irqsave(&cq->cq_lock, flags); 9878700e3e7SMoni Shoua for (i = 0; i < num_entries; i++) { 9888700e3e7SMoni Shoua cqe = queue_head(cq->queue); 9898700e3e7SMoni Shoua if (!cqe) 9908700e3e7SMoni Shoua break; 9918700e3e7SMoni Shoua 9928700e3e7SMoni Shoua memcpy(wc++, &cqe->ibwc, sizeof(*wc)); 9938700e3e7SMoni Shoua advance_consumer(cq->queue); 9948700e3e7SMoni Shoua } 9958700e3e7SMoni Shoua spin_unlock_irqrestore(&cq->cq_lock, flags); 9968700e3e7SMoni Shoua 9978700e3e7SMoni Shoua return i; 9988700e3e7SMoni Shoua } 9998700e3e7SMoni Shoua 10008700e3e7SMoni Shoua static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt) 10018700e3e7SMoni Shoua { 10028700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 10038700e3e7SMoni Shoua int count = queue_count(cq->queue); 10048700e3e7SMoni Shoua 10058700e3e7SMoni Shoua return (count > wc_cnt) ? wc_cnt : count; 10068700e3e7SMoni Shoua } 10078700e3e7SMoni Shoua 10088700e3e7SMoni Shoua static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 10098700e3e7SMoni Shoua { 10108700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 1011accacb8fSAndrew Boyer unsigned long irq_flags; 1012accacb8fSAndrew Boyer int ret = 0; 10138700e3e7SMoni Shoua 1014accacb8fSAndrew Boyer spin_lock_irqsave(&cq->cq_lock, irq_flags); 10158700e3e7SMoni Shoua if (cq->notify != IB_CQ_NEXT_COMP) 10168700e3e7SMoni Shoua cq->notify = flags & IB_CQ_SOLICITED_MASK; 10178700e3e7SMoni Shoua 1018accacb8fSAndrew Boyer if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !queue_empty(cq->queue)) 1019accacb8fSAndrew Boyer ret = 1; 1020accacb8fSAndrew Boyer 1021accacb8fSAndrew Boyer spin_unlock_irqrestore(&cq->cq_lock, irq_flags); 1022accacb8fSAndrew Boyer 1023accacb8fSAndrew Boyer return ret; 10248700e3e7SMoni Shoua } 10258700e3e7SMoni Shoua 10268700e3e7SMoni Shoua static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access) 10278700e3e7SMoni Shoua { 10288700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10298700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10308700e3e7SMoni Shoua struct rxe_mem *mr; 10318700e3e7SMoni Shoua int err; 10328700e3e7SMoni Shoua 10338700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10348700e3e7SMoni Shoua if (!mr) { 10358700e3e7SMoni Shoua err = -ENOMEM; 10368700e3e7SMoni Shoua goto err1; 10378700e3e7SMoni Shoua } 10388700e3e7SMoni Shoua 10398700e3e7SMoni Shoua rxe_add_index(mr); 10408700e3e7SMoni Shoua 10418700e3e7SMoni Shoua rxe_add_ref(pd); 10428700e3e7SMoni Shoua 10438700e3e7SMoni Shoua err = rxe_mem_init_dma(rxe, pd, access, mr); 10448700e3e7SMoni Shoua if (err) 10458700e3e7SMoni Shoua goto err2; 10468700e3e7SMoni Shoua 10478700e3e7SMoni Shoua return &mr->ibmr; 10488700e3e7SMoni Shoua 10498700e3e7SMoni Shoua err2: 10508700e3e7SMoni Shoua rxe_drop_ref(pd); 10518700e3e7SMoni Shoua rxe_drop_index(mr); 10528700e3e7SMoni Shoua rxe_drop_ref(mr); 10538700e3e7SMoni Shoua err1: 10548700e3e7SMoni Shoua return ERR_PTR(err); 10558700e3e7SMoni Shoua } 10568700e3e7SMoni Shoua 10578700e3e7SMoni Shoua static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd, 10588700e3e7SMoni Shoua u64 start, 10598700e3e7SMoni Shoua u64 length, 10608700e3e7SMoni Shoua u64 iova, 10618700e3e7SMoni Shoua int access, struct ib_udata *udata) 10628700e3e7SMoni Shoua { 10638700e3e7SMoni Shoua int err; 10648700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10658700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10668700e3e7SMoni Shoua struct rxe_mem *mr; 10678700e3e7SMoni Shoua 10688700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10698700e3e7SMoni Shoua if (!mr) { 10708700e3e7SMoni Shoua err = -ENOMEM; 10718700e3e7SMoni Shoua goto err2; 10728700e3e7SMoni Shoua } 10738700e3e7SMoni Shoua 10748700e3e7SMoni Shoua rxe_add_index(mr); 10758700e3e7SMoni Shoua 10768700e3e7SMoni Shoua rxe_add_ref(pd); 10778700e3e7SMoni Shoua 10788700e3e7SMoni Shoua err = rxe_mem_init_user(rxe, pd, start, length, iova, 10798700e3e7SMoni Shoua access, udata, mr); 10808700e3e7SMoni Shoua if (err) 10818700e3e7SMoni Shoua goto err3; 10828700e3e7SMoni Shoua 10838700e3e7SMoni Shoua return &mr->ibmr; 10848700e3e7SMoni Shoua 10858700e3e7SMoni Shoua err3: 10868700e3e7SMoni Shoua rxe_drop_ref(pd); 10878700e3e7SMoni Shoua rxe_drop_index(mr); 10888700e3e7SMoni Shoua rxe_drop_ref(mr); 10898700e3e7SMoni Shoua err2: 10908700e3e7SMoni Shoua return ERR_PTR(err); 10918700e3e7SMoni Shoua } 10928700e3e7SMoni Shoua 10938700e3e7SMoni Shoua static int rxe_dereg_mr(struct ib_mr *ibmr) 10948700e3e7SMoni Shoua { 10958700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 10968700e3e7SMoni Shoua 10978700e3e7SMoni Shoua mr->state = RXE_MEM_STATE_ZOMBIE; 10988700e3e7SMoni Shoua rxe_drop_ref(mr->pd); 10998700e3e7SMoni Shoua rxe_drop_index(mr); 11008700e3e7SMoni Shoua rxe_drop_ref(mr); 11018700e3e7SMoni Shoua return 0; 11028700e3e7SMoni Shoua } 11038700e3e7SMoni Shoua 11048700e3e7SMoni Shoua static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, 11058700e3e7SMoni Shoua enum ib_mr_type mr_type, 11068700e3e7SMoni Shoua u32 max_num_sg) 11078700e3e7SMoni Shoua { 11088700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 11098700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 11108700e3e7SMoni Shoua struct rxe_mem *mr; 11118700e3e7SMoni Shoua int err; 11128700e3e7SMoni Shoua 11138700e3e7SMoni Shoua if (mr_type != IB_MR_TYPE_MEM_REG) 11148700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 11158700e3e7SMoni Shoua 11168700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 11178700e3e7SMoni Shoua if (!mr) { 11188700e3e7SMoni Shoua err = -ENOMEM; 11198700e3e7SMoni Shoua goto err1; 11208700e3e7SMoni Shoua } 11218700e3e7SMoni Shoua 11228700e3e7SMoni Shoua rxe_add_index(mr); 11238700e3e7SMoni Shoua 11248700e3e7SMoni Shoua rxe_add_ref(pd); 11258700e3e7SMoni Shoua 11268700e3e7SMoni Shoua err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr); 11278700e3e7SMoni Shoua if (err) 11288700e3e7SMoni Shoua goto err2; 11298700e3e7SMoni Shoua 11308700e3e7SMoni Shoua return &mr->ibmr; 11318700e3e7SMoni Shoua 11328700e3e7SMoni Shoua err2: 11338700e3e7SMoni Shoua rxe_drop_ref(pd); 11348700e3e7SMoni Shoua rxe_drop_index(mr); 11358700e3e7SMoni Shoua rxe_drop_ref(mr); 11368700e3e7SMoni Shoua err1: 11378700e3e7SMoni Shoua return ERR_PTR(err); 11388700e3e7SMoni Shoua } 11398700e3e7SMoni Shoua 11408700e3e7SMoni Shoua static int rxe_set_page(struct ib_mr *ibmr, u64 addr) 11418700e3e7SMoni Shoua { 11428700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11438700e3e7SMoni Shoua struct rxe_map *map; 11448700e3e7SMoni Shoua struct rxe_phys_buf *buf; 11458700e3e7SMoni Shoua 11468700e3e7SMoni Shoua if (unlikely(mr->nbuf == mr->num_buf)) 11478700e3e7SMoni Shoua return -ENOMEM; 11488700e3e7SMoni Shoua 11498700e3e7SMoni Shoua map = mr->map[mr->nbuf / RXE_BUF_PER_MAP]; 11508700e3e7SMoni Shoua buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP]; 11518700e3e7SMoni Shoua 11528700e3e7SMoni Shoua buf->addr = addr; 11538700e3e7SMoni Shoua buf->size = ibmr->page_size; 11548700e3e7SMoni Shoua mr->nbuf++; 11558700e3e7SMoni Shoua 11568700e3e7SMoni Shoua return 0; 11578700e3e7SMoni Shoua } 11588700e3e7SMoni Shoua 1159e404f945SParav Pandit static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, 1160e404f945SParav Pandit int sg_nents, unsigned int *sg_offset) 11618700e3e7SMoni Shoua { 11628700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11638700e3e7SMoni Shoua int n; 11648700e3e7SMoni Shoua 11658700e3e7SMoni Shoua mr->nbuf = 0; 11668700e3e7SMoni Shoua 11678700e3e7SMoni Shoua n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page); 11688700e3e7SMoni Shoua 11698700e3e7SMoni Shoua mr->va = ibmr->iova; 11708700e3e7SMoni Shoua mr->iova = ibmr->iova; 11718700e3e7SMoni Shoua mr->length = ibmr->length; 11728700e3e7SMoni Shoua mr->page_shift = ilog2(ibmr->page_size); 11738700e3e7SMoni Shoua mr->page_mask = ibmr->page_size - 1; 11748700e3e7SMoni Shoua mr->offset = mr->iova & mr->page_mask; 11758700e3e7SMoni Shoua 11768700e3e7SMoni Shoua return n; 11778700e3e7SMoni Shoua } 11788700e3e7SMoni Shoua 11798700e3e7SMoni Shoua static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 11808700e3e7SMoni Shoua { 11818700e3e7SMoni Shoua int err; 11828700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 11838700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 11848700e3e7SMoni Shoua struct rxe_mc_grp *grp; 11858700e3e7SMoni Shoua 11868700e3e7SMoni Shoua /* takes a ref on grp if successful */ 11878700e3e7SMoni Shoua err = rxe_mcast_get_grp(rxe, mgid, &grp); 11888700e3e7SMoni Shoua if (err) 11898700e3e7SMoni Shoua return err; 11908700e3e7SMoni Shoua 11918700e3e7SMoni Shoua err = rxe_mcast_add_grp_elem(rxe, qp, grp); 11928700e3e7SMoni Shoua 11938700e3e7SMoni Shoua rxe_drop_ref(grp); 11948700e3e7SMoni Shoua return err; 11958700e3e7SMoni Shoua } 11968700e3e7SMoni Shoua 11978700e3e7SMoni Shoua static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 11988700e3e7SMoni Shoua { 11998700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 12008700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 12018700e3e7SMoni Shoua 12028700e3e7SMoni Shoua return rxe_mcast_drop_grp_elem(rxe, qp, mgid); 12038700e3e7SMoni Shoua } 12048700e3e7SMoni Shoua 12058700e3e7SMoni Shoua static ssize_t rxe_show_parent(struct device *device, 12068700e3e7SMoni Shoua struct device_attribute *attr, char *buf) 12078700e3e7SMoni Shoua { 12088700e3e7SMoni Shoua struct rxe_dev *rxe = container_of(device, struct rxe_dev, 12098700e3e7SMoni Shoua ib_dev.dev); 12108700e3e7SMoni Shoua char *name; 12118700e3e7SMoni Shoua 12128700e3e7SMoni Shoua name = rxe->ifc_ops->parent_name(rxe, 1); 12138700e3e7SMoni Shoua return snprintf(buf, 16, "%s\n", name); 12148700e3e7SMoni Shoua } 12158700e3e7SMoni Shoua 12168700e3e7SMoni Shoua static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL); 12178700e3e7SMoni Shoua 12188700e3e7SMoni Shoua static struct device_attribute *rxe_dev_attributes[] = { 12198700e3e7SMoni Shoua &dev_attr_parent, 12208700e3e7SMoni Shoua }; 12218700e3e7SMoni Shoua 12228700e3e7SMoni Shoua int rxe_register_device(struct rxe_dev *rxe) 12238700e3e7SMoni Shoua { 12248700e3e7SMoni Shoua int err; 12258700e3e7SMoni Shoua int i; 12268700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 12278700e3e7SMoni Shoua 12288700e3e7SMoni Shoua strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX); 12298700e3e7SMoni Shoua strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc)); 12308700e3e7SMoni Shoua 12318700e3e7SMoni Shoua dev->owner = THIS_MODULE; 12328700e3e7SMoni Shoua dev->node_type = RDMA_NODE_IB_CA; 12338700e3e7SMoni Shoua dev->phys_port_cnt = 1; 12348700e3e7SMoni Shoua dev->num_comp_vectors = RXE_NUM_COMP_VECTORS; 12358700e3e7SMoni Shoua dev->dma_device = rxe->ifc_ops->dma_device(rxe); 12368700e3e7SMoni Shoua dev->local_dma_lkey = 0; 12378700e3e7SMoni Shoua dev->node_guid = rxe->ifc_ops->node_guid(rxe); 12388700e3e7SMoni Shoua dev->dma_ops = &rxe_dma_mapping_ops; 12398700e3e7SMoni Shoua 12408700e3e7SMoni Shoua dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION; 12418700e3e7SMoni Shoua dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT) 12428700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) 12438700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE) 12448700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT) 12458700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD) 12468700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD) 12478700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ) 12488700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ) 12498700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ) 12508700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ) 12518700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV) 12528700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP) 12538700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP) 12548700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP) 12558700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP) 12568700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) 12578700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV) 12588700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ) 12598700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ) 12608700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ) 12618700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ) 12628700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ) 12638700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) 12648700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REG_MR) 12658700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR) 12668700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH) 12678700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH) 12688700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH) 12698700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH) 12708700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST) 12718700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST) 12728700e3e7SMoni Shoua ; 12738700e3e7SMoni Shoua 12748700e3e7SMoni Shoua dev->query_device = rxe_query_device; 12758700e3e7SMoni Shoua dev->modify_device = rxe_modify_device; 12768700e3e7SMoni Shoua dev->query_port = rxe_query_port; 12778700e3e7SMoni Shoua dev->modify_port = rxe_modify_port; 12788700e3e7SMoni Shoua dev->get_link_layer = rxe_get_link_layer; 12798700e3e7SMoni Shoua dev->query_gid = rxe_query_gid; 12808700e3e7SMoni Shoua dev->get_netdev = rxe_get_netdev; 12818700e3e7SMoni Shoua dev->add_gid = rxe_add_gid; 12828700e3e7SMoni Shoua dev->del_gid = rxe_del_gid; 12838700e3e7SMoni Shoua dev->query_pkey = rxe_query_pkey; 12848700e3e7SMoni Shoua dev->alloc_ucontext = rxe_alloc_ucontext; 12858700e3e7SMoni Shoua dev->dealloc_ucontext = rxe_dealloc_ucontext; 12868700e3e7SMoni Shoua dev->mmap = rxe_mmap; 12878700e3e7SMoni Shoua dev->get_port_immutable = rxe_port_immutable; 12888700e3e7SMoni Shoua dev->alloc_pd = rxe_alloc_pd; 12898700e3e7SMoni Shoua dev->dealloc_pd = rxe_dealloc_pd; 12908700e3e7SMoni Shoua dev->create_ah = rxe_create_ah; 12918700e3e7SMoni Shoua dev->modify_ah = rxe_modify_ah; 12928700e3e7SMoni Shoua dev->query_ah = rxe_query_ah; 12938700e3e7SMoni Shoua dev->destroy_ah = rxe_destroy_ah; 12948700e3e7SMoni Shoua dev->create_srq = rxe_create_srq; 12958700e3e7SMoni Shoua dev->modify_srq = rxe_modify_srq; 12968700e3e7SMoni Shoua dev->query_srq = rxe_query_srq; 12978700e3e7SMoni Shoua dev->destroy_srq = rxe_destroy_srq; 12988700e3e7SMoni Shoua dev->post_srq_recv = rxe_post_srq_recv; 12998700e3e7SMoni Shoua dev->create_qp = rxe_create_qp; 13008700e3e7SMoni Shoua dev->modify_qp = rxe_modify_qp; 13018700e3e7SMoni Shoua dev->query_qp = rxe_query_qp; 13028700e3e7SMoni Shoua dev->destroy_qp = rxe_destroy_qp; 13038700e3e7SMoni Shoua dev->post_send = rxe_post_send; 13048700e3e7SMoni Shoua dev->post_recv = rxe_post_recv; 13058700e3e7SMoni Shoua dev->create_cq = rxe_create_cq; 13068700e3e7SMoni Shoua dev->destroy_cq = rxe_destroy_cq; 13078700e3e7SMoni Shoua dev->resize_cq = rxe_resize_cq; 13088700e3e7SMoni Shoua dev->poll_cq = rxe_poll_cq; 13098700e3e7SMoni Shoua dev->peek_cq = rxe_peek_cq; 13108700e3e7SMoni Shoua dev->req_notify_cq = rxe_req_notify_cq; 13118700e3e7SMoni Shoua dev->get_dma_mr = rxe_get_dma_mr; 13128700e3e7SMoni Shoua dev->reg_user_mr = rxe_reg_user_mr; 13138700e3e7SMoni Shoua dev->dereg_mr = rxe_dereg_mr; 13148700e3e7SMoni Shoua dev->alloc_mr = rxe_alloc_mr; 13158700e3e7SMoni Shoua dev->map_mr_sg = rxe_map_mr_sg; 13168700e3e7SMoni Shoua dev->attach_mcast = rxe_attach_mcast; 13178700e3e7SMoni Shoua dev->detach_mcast = rxe_detach_mcast; 13188700e3e7SMoni Shoua 13198700e3e7SMoni Shoua err = ib_register_device(dev, NULL); 13208700e3e7SMoni Shoua if (err) { 13218700e3e7SMoni Shoua pr_warn("rxe_register_device failed, err = %d\n", err); 13228700e3e7SMoni Shoua goto err1; 13238700e3e7SMoni Shoua } 13248700e3e7SMoni Shoua 13258700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) { 13268700e3e7SMoni Shoua err = device_create_file(&dev->dev, rxe_dev_attributes[i]); 13278700e3e7SMoni Shoua if (err) { 13288700e3e7SMoni Shoua pr_warn("device_create_file failed, i = %d, err = %d\n", 13298700e3e7SMoni Shoua i, err); 13308700e3e7SMoni Shoua goto err2; 13318700e3e7SMoni Shoua } 13328700e3e7SMoni Shoua } 13338700e3e7SMoni Shoua 13348700e3e7SMoni Shoua return 0; 13358700e3e7SMoni Shoua 13368700e3e7SMoni Shoua err2: 13378700e3e7SMoni Shoua ib_unregister_device(dev); 13388700e3e7SMoni Shoua err1: 13398700e3e7SMoni Shoua return err; 13408700e3e7SMoni Shoua } 13418700e3e7SMoni Shoua 13428700e3e7SMoni Shoua int rxe_unregister_device(struct rxe_dev *rxe) 13438700e3e7SMoni Shoua { 13448700e3e7SMoni Shoua int i; 13458700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 13468700e3e7SMoni Shoua 13478700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) 13488700e3e7SMoni Shoua device_remove_file(&dev->dev, rxe_dev_attributes[i]); 13498700e3e7SMoni Shoua 13508700e3e7SMoni Shoua ib_unregister_device(dev); 13518700e3e7SMoni Shoua 13528700e3e7SMoni Shoua return 0; 13538700e3e7SMoni Shoua } 1354