1e3cf00d0SUpinder Malhi /* 2e3cf00d0SUpinder Malhi * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. 3e3cf00d0SUpinder Malhi * 43805eadeSJeff Squyres * This software is available to you under a choice of one of two 53805eadeSJeff Squyres * licenses. You may choose to be licensed under the terms of the GNU 63805eadeSJeff Squyres * General Public License (GPL) Version 2, available from the file 73805eadeSJeff Squyres * COPYING in the main directory of this source tree, or the 83805eadeSJeff Squyres * BSD license below: 93805eadeSJeff Squyres * 103805eadeSJeff Squyres * Redistribution and use in source and binary forms, with or 113805eadeSJeff Squyres * without modification, are permitted provided that the following 123805eadeSJeff Squyres * conditions are met: 133805eadeSJeff Squyres * 143805eadeSJeff Squyres * - Redistributions of source code must retain the above 153805eadeSJeff Squyres * copyright notice, this list of conditions and the following 163805eadeSJeff Squyres * disclaimer. 173805eadeSJeff Squyres * 183805eadeSJeff Squyres * - Redistributions in binary form must reproduce the above 193805eadeSJeff Squyres * copyright notice, this list of conditions and the following 203805eadeSJeff Squyres * disclaimer in the documentation and/or other materials 213805eadeSJeff Squyres * provided with the distribution. 22e3cf00d0SUpinder Malhi * 23e3cf00d0SUpinder Malhi * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24e3cf00d0SUpinder Malhi * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25e3cf00d0SUpinder Malhi * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26e3cf00d0SUpinder Malhi * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27e3cf00d0SUpinder Malhi * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28e3cf00d0SUpinder Malhi * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29e3cf00d0SUpinder Malhi * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30e3cf00d0SUpinder Malhi * SOFTWARE. 31e3cf00d0SUpinder Malhi * 32e3cf00d0SUpinder Malhi */ 33e3cf00d0SUpinder Malhi #include <linux/module.h> 34e3cf00d0SUpinder Malhi #include <linux/init.h> 35e3cf00d0SUpinder Malhi #include <linux/slab.h> 36e3cf00d0SUpinder Malhi #include <linux/errno.h> 37e3cf00d0SUpinder Malhi 38e3cf00d0SUpinder Malhi #include <rdma/ib_user_verbs.h> 39e3cf00d0SUpinder Malhi #include <rdma/ib_addr.h> 40e3cf00d0SUpinder Malhi 41e3cf00d0SUpinder Malhi #include "usnic_abi.h" 42e3cf00d0SUpinder Malhi #include "usnic_ib.h" 43e3cf00d0SUpinder Malhi #include "usnic_common_util.h" 44e3cf00d0SUpinder Malhi #include "usnic_ib_qp_grp.h" 4519188436SBart Van Assche #include "usnic_ib_verbs.h" 46e3cf00d0SUpinder Malhi #include "usnic_fwd.h" 47e3cf00d0SUpinder Malhi #include "usnic_log.h" 48e3cf00d0SUpinder Malhi #include "usnic_uiom.h" 49e3cf00d0SUpinder Malhi #include "usnic_transport.h" 50e3cf00d0SUpinder Malhi 51e3cf00d0SUpinder Malhi #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM 52e3cf00d0SUpinder Malhi 53bd8c2021SBart Van Assche const struct usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = { 54bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_UNKNOWN*/ 55bd8c2021SBart Van Assche .resources = { 56bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 57bd8c2021SBart Van Assche }, 58bd8c2021SBart Van Assche }, 59bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_ROCE_CUSTOM*/ 60bd8c2021SBart Van Assche .resources = { 61bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, 62bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, 63bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, 64bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 65bd8c2021SBart Van Assche }, 66bd8c2021SBart Van Assche }, 67bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_IPV4_UDP*/ 68bd8c2021SBart Van Assche .resources = { 69bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, 70bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, 71bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, 72bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 73bd8c2021SBart Van Assche }, 74bd8c2021SBart Van Assche }, 75bd8c2021SBart Van Assche }; 76bd8c2021SBart Van Assche 77e3cf00d0SUpinder Malhi static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver) 78e3cf00d0SUpinder Malhi { 793ea72861SNelson Escobar *fw_ver = *((u64 *)fw_ver_str); 80e3cf00d0SUpinder Malhi } 81e3cf00d0SUpinder Malhi 82e3cf00d0SUpinder Malhi static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp, 83e3cf00d0SUpinder Malhi struct ib_udata *udata) 84e3cf00d0SUpinder Malhi { 85e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 86e3cf00d0SUpinder Malhi struct usnic_ib_create_qp_resp resp; 87e3cf00d0SUpinder Malhi struct pci_dev *pdev; 88e3cf00d0SUpinder Malhi struct vnic_dev_bar *bar; 89e3cf00d0SUpinder Malhi struct usnic_vnic_res_chunk *chunk; 908af94ac6SUpinder Malhi struct usnic_ib_qp_grp_flow *default_flow; 91e3cf00d0SUpinder Malhi int i, err; 92e3cf00d0SUpinder Malhi 93e3cf00d0SUpinder Malhi memset(&resp, 0, sizeof(resp)); 94e3cf00d0SUpinder Malhi 95e3cf00d0SUpinder Malhi us_ibdev = qp_grp->vf->pf; 96e3cf00d0SUpinder Malhi pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); 97e3cf00d0SUpinder Malhi if (!pdev) { 98e3cf00d0SUpinder Malhi usnic_err("Failed to get pdev of qp_grp %d\n", 99e3cf00d0SUpinder Malhi qp_grp->grp_id); 100e3cf00d0SUpinder Malhi return -EFAULT; 101e3cf00d0SUpinder Malhi } 102e3cf00d0SUpinder Malhi 103e3cf00d0SUpinder Malhi bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0); 104e3cf00d0SUpinder Malhi if (!bar) { 105e3cf00d0SUpinder Malhi usnic_err("Failed to get bar0 of qp_grp %d vf %s", 106e3cf00d0SUpinder Malhi qp_grp->grp_id, pci_name(pdev)); 107e3cf00d0SUpinder Malhi return -EFAULT; 108e3cf00d0SUpinder Malhi } 109e3cf00d0SUpinder Malhi 110e3cf00d0SUpinder Malhi resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic); 111e3cf00d0SUpinder Malhi resp.bar_bus_addr = bar->bus_addr; 112e3cf00d0SUpinder Malhi resp.bar_len = bar->len; 113e3cf00d0SUpinder Malhi 114e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); 1155f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 116e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 117e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), 118e3cf00d0SUpinder Malhi qp_grp->grp_id, 119e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1205f4c7e4eSJulia Lawall return PTR_ERR(chunk); 121e3cf00d0SUpinder Malhi } 122e3cf00d0SUpinder Malhi 123e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ); 124e3cf00d0SUpinder Malhi resp.rq_cnt = chunk->cnt; 125e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 126e3cf00d0SUpinder Malhi resp.rq_idx[i] = chunk->res[i]->vnic_idx; 127e3cf00d0SUpinder Malhi 128e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ); 1295f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 130e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 131e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ), 132e3cf00d0SUpinder Malhi qp_grp->grp_id, 133e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1345f4c7e4eSJulia Lawall return PTR_ERR(chunk); 135e3cf00d0SUpinder Malhi } 136e3cf00d0SUpinder Malhi 137e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ); 138e3cf00d0SUpinder Malhi resp.wq_cnt = chunk->cnt; 139e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 140e3cf00d0SUpinder Malhi resp.wq_idx[i] = chunk->res[i]->vnic_idx; 141e3cf00d0SUpinder Malhi 142e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ); 1435f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 144e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 145e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ), 146e3cf00d0SUpinder Malhi qp_grp->grp_id, 147e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1485f4c7e4eSJulia Lawall return PTR_ERR(chunk); 149e3cf00d0SUpinder Malhi } 150e3cf00d0SUpinder Malhi 151e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ); 152e3cf00d0SUpinder Malhi resp.cq_cnt = chunk->cnt; 153e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 154e3cf00d0SUpinder Malhi resp.cq_idx[i] = chunk->res[i]->vnic_idx; 155e3cf00d0SUpinder Malhi 1568af94ac6SUpinder Malhi default_flow = list_first_entry(&qp_grp->flows_lst, 1578af94ac6SUpinder Malhi struct usnic_ib_qp_grp_flow, link); 1588af94ac6SUpinder Malhi resp.transport = default_flow->trans_type; 1598af94ac6SUpinder Malhi 160e3cf00d0SUpinder Malhi err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 161e3cf00d0SUpinder Malhi if (err) { 1629de69861SJason Gunthorpe usnic_err("Failed to copy udata for %s", 1639de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 164e3cf00d0SUpinder Malhi return err; 165e3cf00d0SUpinder Malhi } 166e3cf00d0SUpinder Malhi 167e3cf00d0SUpinder Malhi return 0; 168e3cf00d0SUpinder Malhi } 169e3cf00d0SUpinder Malhi 170e3cf00d0SUpinder Malhi static struct usnic_ib_qp_grp* 171e3cf00d0SUpinder Malhi find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev, 172e3cf00d0SUpinder Malhi struct usnic_ib_pd *pd, 1738af94ac6SUpinder Malhi struct usnic_transport_spec *trans_spec, 174e3cf00d0SUpinder Malhi struct usnic_vnic_res_spec *res_spec) 175e3cf00d0SUpinder Malhi { 176e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 177e3cf00d0SUpinder Malhi struct usnic_vnic *vnic; 178e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 179e3cf00d0SUpinder Malhi struct device *dev, **dev_list; 180313e16d5SLeon Romanovsky int i; 181e3cf00d0SUpinder Malhi 182e3cf00d0SUpinder Malhi BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); 183e3cf00d0SUpinder Malhi 184e3cf00d0SUpinder Malhi if (list_empty(&us_ibdev->vf_dev_list)) { 185e3cf00d0SUpinder Malhi usnic_info("No vfs to allocate\n"); 186e3cf00d0SUpinder Malhi return NULL; 187e3cf00d0SUpinder Malhi } 188e3cf00d0SUpinder Malhi 189e3cf00d0SUpinder Malhi if (usnic_ib_share_vf) { 190e3cf00d0SUpinder Malhi /* Try to find resouces on a used vf which is in pd */ 191e3cf00d0SUpinder Malhi dev_list = usnic_uiom_get_dev_list(pd->umem_pd); 192d518a44dSDan Carpenter if (IS_ERR(dev_list)) 193d518a44dSDan Carpenter return ERR_CAST(dev_list); 194e3cf00d0SUpinder Malhi for (i = 0; dev_list[i]; i++) { 195e3cf00d0SUpinder Malhi dev = dev_list[i]; 196e3cf00d0SUpinder Malhi vf = pci_get_drvdata(to_pci_dev(dev)); 197e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 198e3cf00d0SUpinder Malhi vnic = vf->vnic; 199e3cf00d0SUpinder Malhi if (!usnic_vnic_check_room(vnic, res_spec)) { 200e3cf00d0SUpinder Malhi usnic_dbg("Found used vnic %s from %s\n", 2019de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev), 202e3cf00d0SUpinder Malhi pci_name(usnic_vnic_get_pdev( 203e3cf00d0SUpinder Malhi vnic))); 204313e16d5SLeon Romanovsky qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, 205313e16d5SLeon Romanovsky vf, pd, 206313e16d5SLeon Romanovsky res_spec, 207313e16d5SLeon Romanovsky trans_spec); 208313e16d5SLeon Romanovsky 209313e16d5SLeon Romanovsky spin_unlock(&vf->lock); 210313e16d5SLeon Romanovsky goto qp_grp_check; 211e3cf00d0SUpinder Malhi } 212e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 213e3cf00d0SUpinder Malhi 214e3cf00d0SUpinder Malhi } 215e3cf00d0SUpinder Malhi usnic_uiom_free_dev_list(dev_list); 216e3cf00d0SUpinder Malhi } 217e3cf00d0SUpinder Malhi 218e3cf00d0SUpinder Malhi /* Try to find resources on an unused vf */ 219e3cf00d0SUpinder Malhi list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) { 220e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 221e3cf00d0SUpinder Malhi vnic = vf->vnic; 222e3cf00d0SUpinder Malhi if (vf->qp_grp_ref_cnt == 0 && 223e3cf00d0SUpinder Malhi usnic_vnic_check_room(vnic, res_spec) == 0) { 224313e16d5SLeon Romanovsky qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, 225313e16d5SLeon Romanovsky pd, res_spec, 2268af94ac6SUpinder Malhi trans_spec); 227313e16d5SLeon Romanovsky 228e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 229313e16d5SLeon Romanovsky goto qp_grp_check; 230313e16d5SLeon Romanovsky } 231313e16d5SLeon Romanovsky spin_unlock(&vf->lock); 232313e16d5SLeon Romanovsky } 233313e16d5SLeon Romanovsky 2349de69861SJason Gunthorpe usnic_info("No free qp grp found on %s\n", 2359de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 236313e16d5SLeon Romanovsky return ERR_PTR(-ENOMEM); 237313e16d5SLeon Romanovsky 238313e16d5SLeon Romanovsky qp_grp_check: 239e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(qp_grp)) { 240e3cf00d0SUpinder Malhi usnic_err("Failed to allocate qp_grp\n"); 241e3cf00d0SUpinder Malhi return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM); 242e3cf00d0SUpinder Malhi } 243e3cf00d0SUpinder Malhi return qp_grp; 244e3cf00d0SUpinder Malhi } 245e3cf00d0SUpinder Malhi 246e3cf00d0SUpinder Malhi static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) 247e3cf00d0SUpinder Malhi { 248e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf = qp_grp->vf; 249e3cf00d0SUpinder Malhi 250e3cf00d0SUpinder Malhi WARN_ON(qp_grp->state != IB_QPS_RESET); 251e3cf00d0SUpinder Malhi 252e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 253e3cf00d0SUpinder Malhi usnic_ib_qp_grp_destroy(qp_grp); 254e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 255e3cf00d0SUpinder Malhi } 256e3cf00d0SUpinder Malhi 257c7845bcaSUpinder Malhi static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) 258c7845bcaSUpinder Malhi { 259c7845bcaSUpinder Malhi if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || 260c7845bcaSUpinder Malhi cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) 261c7845bcaSUpinder Malhi return -EINVAL; 262c7845bcaSUpinder Malhi 263c7845bcaSUpinder Malhi return 0; 264c7845bcaSUpinder Malhi } 265c7845bcaSUpinder Malhi 266e3cf00d0SUpinder Malhi /* Start of ib callback functions */ 267e3cf00d0SUpinder Malhi 268e3cf00d0SUpinder Malhi enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, 269e3cf00d0SUpinder Malhi u8 port_num) 270e3cf00d0SUpinder Malhi { 271e3cf00d0SUpinder Malhi return IB_LINK_LAYER_ETHERNET; 272e3cf00d0SUpinder Malhi } 273e3cf00d0SUpinder Malhi 274e3cf00d0SUpinder Malhi int usnic_ib_query_device(struct ib_device *ibdev, 2752528e33eSMatan Barak struct ib_device_attr *props, 2762528e33eSMatan Barak struct ib_udata *uhw) 277e3cf00d0SUpinder Malhi { 278e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 279e3cf00d0SUpinder Malhi union ib_gid gid; 280e3cf00d0SUpinder Malhi struct ethtool_drvinfo info; 281e3cf00d0SUpinder Malhi int qp_per_vf; 282e3cf00d0SUpinder Malhi 283e3cf00d0SUpinder Malhi usnic_dbg("\n"); 2842528e33eSMatan Barak if (uhw->inlen || uhw->outlen) 2852528e33eSMatan Barak return -EINVAL; 2862528e33eSMatan Barak 287e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 288e3cf00d0SUpinder Malhi us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); 289e3cf00d0SUpinder Malhi memset(props, 0, sizeof(*props)); 290c7845bcaSUpinder Malhi usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, 291c7845bcaSUpinder Malhi &gid.raw[0]); 292e3cf00d0SUpinder Malhi memcpy(&props->sys_image_guid, &gid.global.interface_id, 293e3cf00d0SUpinder Malhi sizeof(gid.global.interface_id)); 294e3cf00d0SUpinder Malhi usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); 295e3cf00d0SUpinder Malhi props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; 296e3cf00d0SUpinder Malhi props->page_size_cap = USNIC_UIOM_PAGE_SIZE; 297e3cf00d0SUpinder Malhi props->vendor_id = PCI_VENDOR_ID_CISCO; 298e3cf00d0SUpinder Malhi props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; 299e3cf00d0SUpinder Malhi props->hw_ver = us_ibdev->pdev->subsystem_device; 300e3cf00d0SUpinder Malhi qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], 301e3cf00d0SUpinder Malhi us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); 302e3cf00d0SUpinder Malhi props->max_qp = qp_per_vf * 3032c935bc5SPeter Zijlstra kref_read(&us_ibdev->vf_cnt); 304e3cf00d0SUpinder Malhi props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | 305e3cf00d0SUpinder Malhi IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 306e3cf00d0SUpinder Malhi props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * 3072c935bc5SPeter Zijlstra kref_read(&us_ibdev->vf_cnt); 308e3cf00d0SUpinder Malhi props->max_pd = USNIC_UIOM_MAX_PD_CNT; 309e3cf00d0SUpinder Malhi props->max_mr = USNIC_UIOM_MAX_MR_CNT; 310e3cf00d0SUpinder Malhi props->local_ca_ack_delay = 0; 311e3cf00d0SUpinder Malhi props->max_pkeys = 0; 312e3cf00d0SUpinder Malhi props->atomic_cap = IB_ATOMIC_NONE; 313e3cf00d0SUpinder Malhi props->masked_atomic_cap = props->atomic_cap; 314e3cf00d0SUpinder Malhi props->max_qp_rd_atom = 0; 315e3cf00d0SUpinder Malhi props->max_qp_init_rd_atom = 0; 316e3cf00d0SUpinder Malhi props->max_res_rd_atom = 0; 317e3cf00d0SUpinder Malhi props->max_srq = 0; 318e3cf00d0SUpinder Malhi props->max_srq_wr = 0; 319e3cf00d0SUpinder Malhi props->max_srq_sge = 0; 320e3cf00d0SUpinder Malhi props->max_fast_reg_page_list_len = 0; 321e3cf00d0SUpinder Malhi props->max_mcast_grp = 0; 322e3cf00d0SUpinder Malhi props->max_mcast_qp_attach = 0; 323e3cf00d0SUpinder Malhi props->max_total_mcast_qp_attach = 0; 324e3cf00d0SUpinder Malhi props->max_map_per_fmr = 0; 325e3cf00d0SUpinder Malhi /* Owned by Userspace 326e3cf00d0SUpinder Malhi * max_qp_wr, max_sge, max_sge_rd, max_cqe */ 327e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 328e3cf00d0SUpinder Malhi 329e3cf00d0SUpinder Malhi return 0; 330e3cf00d0SUpinder Malhi } 331e3cf00d0SUpinder Malhi 332e3cf00d0SUpinder Malhi int usnic_ib_query_port(struct ib_device *ibdev, u8 port, 333e3cf00d0SUpinder Malhi struct ib_port_attr *props) 334e3cf00d0SUpinder Malhi { 335e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 336e3cf00d0SUpinder Malhi 337e3cf00d0SUpinder Malhi usnic_dbg("\n"); 338e3cf00d0SUpinder Malhi 3397be05753SSelvin Xavier if (ib_get_eth_speed(ibdev, port, &props->active_speed, 3408036e90fSParvi Kaustubhi &props->active_width)) 341d4186194SYuval Shaia return -EINVAL; 342d4186194SYuval Shaia 3438036e90fSParvi Kaustubhi /* 3448036e90fSParvi Kaustubhi * usdev_lock is acquired after (and not before) ib_get_eth_speed call 3458036e90fSParvi Kaustubhi * because acquiring rtnl_lock in ib_get_eth_speed, while holding 3468036e90fSParvi Kaustubhi * usdev_lock could lead to a deadlock. 3478036e90fSParvi Kaustubhi */ 3488036e90fSParvi Kaustubhi mutex_lock(&us_ibdev->usdev_lock); 349c4550c63SOr Gerlitz /* props being zeroed by the caller, avoid zeroing it here */ 350e3cf00d0SUpinder Malhi 351e3cf00d0SUpinder Malhi props->lid = 0; 352e3cf00d0SUpinder Malhi props->lmc = 1; 353e3cf00d0SUpinder Malhi props->sm_lid = 0; 354e3cf00d0SUpinder Malhi props->sm_sl = 0; 355e3cf00d0SUpinder Malhi 356c7845bcaSUpinder Malhi if (!us_ibdev->ufdev->link_up) { 357e3cf00d0SUpinder Malhi props->state = IB_PORT_DOWN; 358e3cf00d0SUpinder Malhi props->phys_state = 3; 359c7845bcaSUpinder Malhi } else if (!us_ibdev->ufdev->inaddr) { 360c7845bcaSUpinder Malhi props->state = IB_PORT_INIT; 361c7845bcaSUpinder Malhi props->phys_state = 4; 362c7845bcaSUpinder Malhi } else { 363c7845bcaSUpinder Malhi props->state = IB_PORT_ACTIVE; 364c7845bcaSUpinder Malhi props->phys_state = 5; 365e3cf00d0SUpinder Malhi } 366e3cf00d0SUpinder Malhi 367e3cf00d0SUpinder Malhi props->port_cap_flags = 0; 368e3cf00d0SUpinder Malhi props->gid_tbl_len = 1; 369e3cf00d0SUpinder Malhi props->pkey_tbl_len = 1; 370e3cf00d0SUpinder Malhi props->bad_pkey_cntr = 0; 371e3cf00d0SUpinder Malhi props->qkey_viol_cntr = 0; 372e3cf00d0SUpinder Malhi props->max_mtu = IB_MTU_4096; 3738af94ac6SUpinder Malhi props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); 374e3cf00d0SUpinder Malhi /* Userspace will adjust for hdrs */ 3758af94ac6SUpinder Malhi props->max_msg_sz = us_ibdev->ufdev->mtu; 376e3cf00d0SUpinder Malhi props->max_vl_num = 1; 377e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 378e3cf00d0SUpinder Malhi 379e3cf00d0SUpinder Malhi return 0; 380e3cf00d0SUpinder Malhi } 381e3cf00d0SUpinder Malhi 382e3cf00d0SUpinder Malhi int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, 383e3cf00d0SUpinder Malhi int qp_attr_mask, 384e3cf00d0SUpinder Malhi struct ib_qp_init_attr *qp_init_attr) 385e3cf00d0SUpinder Malhi { 386e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 387e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 388e3cf00d0SUpinder Malhi int err; 389e3cf00d0SUpinder Malhi 390e3cf00d0SUpinder Malhi usnic_dbg("\n"); 391e3cf00d0SUpinder Malhi 392e3cf00d0SUpinder Malhi memset(qp_attr, 0, sizeof(*qp_attr)); 393e3cf00d0SUpinder Malhi memset(qp_init_attr, 0, sizeof(*qp_init_attr)); 394e3cf00d0SUpinder Malhi 395e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(qp); 396e3cf00d0SUpinder Malhi vf = qp_grp->vf; 397e3cf00d0SUpinder Malhi mutex_lock(&vf->pf->usdev_lock); 398e3cf00d0SUpinder Malhi usnic_dbg("\n"); 399e3cf00d0SUpinder Malhi qp_attr->qp_state = qp_grp->state; 400e3cf00d0SUpinder Malhi qp_attr->cur_qp_state = qp_grp->state; 401e3cf00d0SUpinder Malhi 402e3cf00d0SUpinder Malhi switch (qp_grp->ibqp.qp_type) { 403e3cf00d0SUpinder Malhi case IB_QPT_UD: 404e3cf00d0SUpinder Malhi qp_attr->qkey = 0; 405e3cf00d0SUpinder Malhi break; 406e3cf00d0SUpinder Malhi default: 407e3cf00d0SUpinder Malhi usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); 408e3cf00d0SUpinder Malhi err = -EINVAL; 409e3cf00d0SUpinder Malhi goto err_out; 410e3cf00d0SUpinder Malhi } 411e3cf00d0SUpinder Malhi 412e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 413e3cf00d0SUpinder Malhi return 0; 414e3cf00d0SUpinder Malhi 415e3cf00d0SUpinder Malhi err_out: 416e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 417e3cf00d0SUpinder Malhi return err; 418e3cf00d0SUpinder Malhi } 419e3cf00d0SUpinder Malhi 420e3cf00d0SUpinder Malhi int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 421e3cf00d0SUpinder Malhi union ib_gid *gid) 422e3cf00d0SUpinder Malhi { 423e3cf00d0SUpinder Malhi 424e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 425e3cf00d0SUpinder Malhi usnic_dbg("\n"); 426e3cf00d0SUpinder Malhi 427e3cf00d0SUpinder Malhi if (index > 1) 428e3cf00d0SUpinder Malhi return -EINVAL; 429e3cf00d0SUpinder Malhi 430e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 431e3cf00d0SUpinder Malhi memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 432c7845bcaSUpinder Malhi usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, 433c7845bcaSUpinder Malhi &gid->raw[0]); 434e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 435e3cf00d0SUpinder Malhi 436e3cf00d0SUpinder Malhi return 0; 437e3cf00d0SUpinder Malhi } 438e3cf00d0SUpinder Malhi 43944b0b745SYuval Shaia struct net_device *usnic_get_netdev(struct ib_device *device, u8 port_num) 44044b0b745SYuval Shaia { 44144b0b745SYuval Shaia struct usnic_ib_dev *us_ibdev = to_usdev(device); 44244b0b745SYuval Shaia 44344b0b745SYuval Shaia if (us_ibdev->netdev) 44444b0b745SYuval Shaia dev_hold(us_ibdev->netdev); 44544b0b745SYuval Shaia 44644b0b745SYuval Shaia return us_ibdev->netdev; 44744b0b745SYuval Shaia } 44844b0b745SYuval Shaia 449e3cf00d0SUpinder Malhi int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 450e3cf00d0SUpinder Malhi u16 *pkey) 451e3cf00d0SUpinder Malhi { 4524959d5daSGal Pressman if (index > 0) 453e3cf00d0SUpinder Malhi return -EINVAL; 454e3cf00d0SUpinder Malhi 455e3cf00d0SUpinder Malhi *pkey = 0xffff; 456e3cf00d0SUpinder Malhi return 0; 457e3cf00d0SUpinder Malhi } 458e3cf00d0SUpinder Malhi 459e3cf00d0SUpinder Malhi struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev, 460e3cf00d0SUpinder Malhi struct ib_ucontext *context, 461e3cf00d0SUpinder Malhi struct ib_udata *udata) 462e3cf00d0SUpinder Malhi { 463e3cf00d0SUpinder Malhi struct usnic_ib_pd *pd; 464e3cf00d0SUpinder Malhi void *umem_pd; 465e3cf00d0SUpinder Malhi 466e3cf00d0SUpinder Malhi usnic_dbg("\n"); 467e3cf00d0SUpinder Malhi 468e3cf00d0SUpinder Malhi pd = kzalloc(sizeof(*pd), GFP_KERNEL); 469e3cf00d0SUpinder Malhi if (!pd) 470e3cf00d0SUpinder Malhi return ERR_PTR(-ENOMEM); 471e3cf00d0SUpinder Malhi 472e3cf00d0SUpinder Malhi umem_pd = pd->umem_pd = usnic_uiom_alloc_pd(); 473e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(umem_pd)) { 474e3cf00d0SUpinder Malhi kfree(pd); 475e3cf00d0SUpinder Malhi return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM); 476e3cf00d0SUpinder Malhi } 477e3cf00d0SUpinder Malhi 478e3cf00d0SUpinder Malhi usnic_info("domain 0x%p allocated for context 0x%p and device %s\n", 4799de69861SJason Gunthorpe pd, context, dev_name(&ibdev->dev)); 480e3cf00d0SUpinder Malhi return &pd->ibpd; 481e3cf00d0SUpinder Malhi } 482e3cf00d0SUpinder Malhi 483e3cf00d0SUpinder Malhi int usnic_ib_dealloc_pd(struct ib_pd *pd) 484e3cf00d0SUpinder Malhi { 485e3cf00d0SUpinder Malhi usnic_info("freeing domain 0x%p\n", pd); 486e3cf00d0SUpinder Malhi 487e3cf00d0SUpinder Malhi usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); 488e3cf00d0SUpinder Malhi kfree(pd); 489e3cf00d0SUpinder Malhi return 0; 490e3cf00d0SUpinder Malhi } 491e3cf00d0SUpinder Malhi 492e3cf00d0SUpinder Malhi struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd, 493e3cf00d0SUpinder Malhi struct ib_qp_init_attr *init_attr, 494e3cf00d0SUpinder Malhi struct ib_udata *udata) 495e3cf00d0SUpinder Malhi { 496e3cf00d0SUpinder Malhi int err; 497e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 498e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 499e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *ucontext; 500e3cf00d0SUpinder Malhi int cq_cnt; 501e3cf00d0SUpinder Malhi struct usnic_vnic_res_spec res_spec; 502c7845bcaSUpinder Malhi struct usnic_ib_create_qp_cmd cmd; 5038af94ac6SUpinder Malhi struct usnic_transport_spec trans_spec; 504e3cf00d0SUpinder Malhi 505e3cf00d0SUpinder Malhi usnic_dbg("\n"); 506e3cf00d0SUpinder Malhi 507e3cf00d0SUpinder Malhi ucontext = to_uucontext(pd->uobject->context); 508e3cf00d0SUpinder Malhi us_ibdev = to_usdev(pd->device); 509e3cf00d0SUpinder Malhi 51060093dc0SOr Gerlitz if (init_attr->create_flags) 51160093dc0SOr Gerlitz return ERR_PTR(-EINVAL); 51260093dc0SOr Gerlitz 513c7845bcaSUpinder Malhi err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); 514c7845bcaSUpinder Malhi if (err) { 515c7845bcaSUpinder Malhi usnic_err("%s: cannot copy udata for create_qp\n", 5169de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 517c7845bcaSUpinder Malhi return ERR_PTR(-EINVAL); 518c7845bcaSUpinder Malhi } 519c7845bcaSUpinder Malhi 520c7845bcaSUpinder Malhi err = create_qp_validate_user_data(cmd); 521c7845bcaSUpinder Malhi if (err) { 522c7845bcaSUpinder Malhi usnic_err("%s: Failed to validate user data\n", 5239de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 524c7845bcaSUpinder Malhi return ERR_PTR(-EINVAL); 525c7845bcaSUpinder Malhi } 526c7845bcaSUpinder Malhi 527e3cf00d0SUpinder Malhi if (init_attr->qp_type != IB_QPT_UD) { 528e3cf00d0SUpinder Malhi usnic_err("%s asked to make a non-UD QP: %d\n", 5299de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev), init_attr->qp_type); 530e3cf00d0SUpinder Malhi return ERR_PTR(-EINVAL); 531e3cf00d0SUpinder Malhi } 532e3cf00d0SUpinder Malhi 533c7845bcaSUpinder Malhi trans_spec = cmd.spec; 534e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 5358af94ac6SUpinder Malhi cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; 5368af94ac6SUpinder Malhi res_spec = min_transport_spec[trans_spec.trans_type]; 537e3cf00d0SUpinder Malhi usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); 538e3cf00d0SUpinder Malhi qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd), 5398af94ac6SUpinder Malhi &trans_spec, 540e3cf00d0SUpinder Malhi &res_spec); 541e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(qp_grp)) { 5426a54d9f9SUpinder Malhi err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM; 543e3cf00d0SUpinder Malhi goto out_release_mutex; 544e3cf00d0SUpinder Malhi } 545e3cf00d0SUpinder Malhi 546e3cf00d0SUpinder Malhi err = usnic_ib_fill_create_qp_resp(qp_grp, udata); 547e3cf00d0SUpinder Malhi if (err) { 548e3cf00d0SUpinder Malhi err = -EBUSY; 549e3cf00d0SUpinder Malhi goto out_release_qp_grp; 550e3cf00d0SUpinder Malhi } 551e3cf00d0SUpinder Malhi 552e3cf00d0SUpinder Malhi qp_grp->ctx = ucontext; 553e3cf00d0SUpinder Malhi list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); 554e3cf00d0SUpinder Malhi usnic_ib_log_vf(qp_grp->vf); 555e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 556e3cf00d0SUpinder Malhi return &qp_grp->ibqp; 557e3cf00d0SUpinder Malhi 558e3cf00d0SUpinder Malhi out_release_qp_grp: 559e3cf00d0SUpinder Malhi qp_grp_destroy(qp_grp); 560e3cf00d0SUpinder Malhi out_release_mutex: 561e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 562e3cf00d0SUpinder Malhi return ERR_PTR(err); 563e3cf00d0SUpinder Malhi } 564e3cf00d0SUpinder Malhi 565e3cf00d0SUpinder Malhi int usnic_ib_destroy_qp(struct ib_qp *qp) 566e3cf00d0SUpinder Malhi { 567e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 568e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 569e3cf00d0SUpinder Malhi 570e3cf00d0SUpinder Malhi usnic_dbg("\n"); 571e3cf00d0SUpinder Malhi 572e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(qp); 573e3cf00d0SUpinder Malhi vf = qp_grp->vf; 574e3cf00d0SUpinder Malhi mutex_lock(&vf->pf->usdev_lock); 575e3cf00d0SUpinder Malhi if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { 576e3cf00d0SUpinder Malhi usnic_err("Failed to move qp grp %u to reset\n", 577e3cf00d0SUpinder Malhi qp_grp->grp_id); 578e3cf00d0SUpinder Malhi } 579e3cf00d0SUpinder Malhi 580e3cf00d0SUpinder Malhi list_del(&qp_grp->link); 581e3cf00d0SUpinder Malhi qp_grp_destroy(qp_grp); 582e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 583e3cf00d0SUpinder Malhi 584e3cf00d0SUpinder Malhi return 0; 585e3cf00d0SUpinder Malhi } 586e3cf00d0SUpinder Malhi 587e3cf00d0SUpinder Malhi int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 588e3cf00d0SUpinder Malhi int attr_mask, struct ib_udata *udata) 589e3cf00d0SUpinder Malhi { 590e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 591e3cf00d0SUpinder Malhi int status; 592e3cf00d0SUpinder Malhi usnic_dbg("\n"); 593e3cf00d0SUpinder Malhi 594e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(ibqp); 595e3cf00d0SUpinder Malhi 596e3cf00d0SUpinder Malhi mutex_lock(&qp_grp->vf->pf->usdev_lock); 59789e5323cSNelson Escobar if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) { 59889e5323cSNelson Escobar /* usnic devices only have one port */ 59989e5323cSNelson Escobar status = -EINVAL; 60089e5323cSNelson Escobar goto out_unlock; 60189e5323cSNelson Escobar } 60289e5323cSNelson Escobar if (attr_mask & IB_QP_STATE) { 60389e5323cSNelson Escobar status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL); 604e3cf00d0SUpinder Malhi } else { 60589e5323cSNelson Escobar usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask); 606e3cf00d0SUpinder Malhi status = -EINVAL; 607e3cf00d0SUpinder Malhi } 608e3cf00d0SUpinder Malhi 60989e5323cSNelson Escobar out_unlock: 610e3cf00d0SUpinder Malhi mutex_unlock(&qp_grp->vf->pf->usdev_lock); 611e3cf00d0SUpinder Malhi return status; 612e3cf00d0SUpinder Malhi } 613e3cf00d0SUpinder Malhi 614bcf4c1eaSMatan Barak struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, 615bcf4c1eaSMatan Barak const struct ib_cq_init_attr *attr, 616bcf4c1eaSMatan Barak struct ib_ucontext *context, 617e3cf00d0SUpinder Malhi struct ib_udata *udata) 618e3cf00d0SUpinder Malhi { 619e3cf00d0SUpinder Malhi struct ib_cq *cq; 620e3cf00d0SUpinder Malhi 621e3cf00d0SUpinder Malhi usnic_dbg("\n"); 622bcf4c1eaSMatan Barak if (attr->flags) 623bcf4c1eaSMatan Barak return ERR_PTR(-EINVAL); 624bcf4c1eaSMatan Barak 625e3cf00d0SUpinder Malhi cq = kzalloc(sizeof(*cq), GFP_KERNEL); 626e3cf00d0SUpinder Malhi if (!cq) 627e3cf00d0SUpinder Malhi return ERR_PTR(-EBUSY); 628e3cf00d0SUpinder Malhi 629e3cf00d0SUpinder Malhi return cq; 630e3cf00d0SUpinder Malhi } 631e3cf00d0SUpinder Malhi 632e3cf00d0SUpinder Malhi int usnic_ib_destroy_cq(struct ib_cq *cq) 633e3cf00d0SUpinder Malhi { 634e3cf00d0SUpinder Malhi usnic_dbg("\n"); 635e3cf00d0SUpinder Malhi kfree(cq); 636e3cf00d0SUpinder Malhi return 0; 637e3cf00d0SUpinder Malhi } 638e3cf00d0SUpinder Malhi 639e3cf00d0SUpinder Malhi struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, 640e3cf00d0SUpinder Malhi u64 virt_addr, int access_flags, 641e3cf00d0SUpinder Malhi struct ib_udata *udata) 642e3cf00d0SUpinder Malhi { 643e3cf00d0SUpinder Malhi struct usnic_ib_mr *mr; 644e3cf00d0SUpinder Malhi int err; 645e3cf00d0SUpinder Malhi 646e3cf00d0SUpinder Malhi usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, 647e3cf00d0SUpinder Malhi virt_addr, length); 648e3cf00d0SUpinder Malhi 649e3cf00d0SUpinder Malhi mr = kzalloc(sizeof(*mr), GFP_KERNEL); 65059f65f49SJulia Lawall if (!mr) 65159f65f49SJulia Lawall return ERR_PTR(-ENOMEM); 652e3cf00d0SUpinder Malhi 653e3cf00d0SUpinder Malhi mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, 654e3cf00d0SUpinder Malhi access_flags, 0); 655e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(mr->umem)) { 6566a54d9f9SUpinder Malhi err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT; 657e3cf00d0SUpinder Malhi goto err_free; 658e3cf00d0SUpinder Malhi } 659e3cf00d0SUpinder Malhi 660e3cf00d0SUpinder Malhi mr->ibmr.lkey = mr->ibmr.rkey = 0; 661e3cf00d0SUpinder Malhi return &mr->ibmr; 662e3cf00d0SUpinder Malhi 663e3cf00d0SUpinder Malhi err_free: 664e3cf00d0SUpinder Malhi kfree(mr); 665e3cf00d0SUpinder Malhi return ERR_PTR(err); 666e3cf00d0SUpinder Malhi } 667e3cf00d0SUpinder Malhi 668e3cf00d0SUpinder Malhi int usnic_ib_dereg_mr(struct ib_mr *ibmr) 669e3cf00d0SUpinder Malhi { 670e3cf00d0SUpinder Malhi struct usnic_ib_mr *mr = to_umr(ibmr); 671e3cf00d0SUpinder Malhi 672e3cf00d0SUpinder Malhi usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); 673e3cf00d0SUpinder Malhi 67443cbd64bSJason Gunthorpe usnic_uiom_reg_release(mr->umem, ibmr->uobject->context); 675e3cf00d0SUpinder Malhi kfree(mr); 676e3cf00d0SUpinder Malhi return 0; 677e3cf00d0SUpinder Malhi } 678e3cf00d0SUpinder Malhi 679e3cf00d0SUpinder Malhi struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev, 680e3cf00d0SUpinder Malhi struct ib_udata *udata) 681e3cf00d0SUpinder Malhi { 682e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *context; 683e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 684e3cf00d0SUpinder Malhi usnic_dbg("\n"); 685e3cf00d0SUpinder Malhi 686081de949SLeon Romanovsky context = kzalloc(sizeof(*context), GFP_KERNEL); 687e3cf00d0SUpinder Malhi if (!context) 688e3cf00d0SUpinder Malhi return ERR_PTR(-ENOMEM); 689e3cf00d0SUpinder Malhi 690e3cf00d0SUpinder Malhi INIT_LIST_HEAD(&context->qp_grp_list); 691e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 692e3cf00d0SUpinder Malhi list_add_tail(&context->link, &us_ibdev->ctx_list); 693e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 694e3cf00d0SUpinder Malhi 695e3cf00d0SUpinder Malhi return &context->ibucontext; 696e3cf00d0SUpinder Malhi } 697e3cf00d0SUpinder Malhi 698e3cf00d0SUpinder Malhi int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 699e3cf00d0SUpinder Malhi { 700e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *context = to_uucontext(ibcontext); 701e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); 702e3cf00d0SUpinder Malhi usnic_dbg("\n"); 703e3cf00d0SUpinder Malhi 704e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 705e3cf00d0SUpinder Malhi BUG_ON(!list_empty(&context->qp_grp_list)); 706e3cf00d0SUpinder Malhi list_del(&context->link); 707e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 708e3cf00d0SUpinder Malhi kfree(context); 709e3cf00d0SUpinder Malhi return 0; 710e3cf00d0SUpinder Malhi } 711e3cf00d0SUpinder Malhi 712e3cf00d0SUpinder Malhi int usnic_ib_mmap(struct ib_ucontext *context, 713e3cf00d0SUpinder Malhi struct vm_area_struct *vma) 714e3cf00d0SUpinder Malhi { 715e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *uctx = to_ucontext(context); 716e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 717e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 718e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 719e3cf00d0SUpinder Malhi struct vnic_dev_bar *bar; 720e3cf00d0SUpinder Malhi dma_addr_t bus_addr; 721e3cf00d0SUpinder Malhi unsigned int len; 722e3cf00d0SUpinder Malhi unsigned int vfid; 723e3cf00d0SUpinder Malhi 724e3cf00d0SUpinder Malhi usnic_dbg("\n"); 725e3cf00d0SUpinder Malhi 726e3cf00d0SUpinder Malhi us_ibdev = to_usdev(context->device); 727e3cf00d0SUpinder Malhi vma->vm_flags |= VM_IO; 728e3cf00d0SUpinder Malhi vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 729e3cf00d0SUpinder Malhi vfid = vma->vm_pgoff; 730e3cf00d0SUpinder Malhi usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", 731e3cf00d0SUpinder Malhi vma->vm_pgoff, PAGE_SHIFT, vfid); 732e3cf00d0SUpinder Malhi 733e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 734e3cf00d0SUpinder Malhi list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { 735e3cf00d0SUpinder Malhi vf = qp_grp->vf; 736e3cf00d0SUpinder Malhi if (usnic_vnic_get_index(vf->vnic) == vfid) { 737e3cf00d0SUpinder Malhi bar = usnic_vnic_get_bar(vf->vnic, 0); 738e3cf00d0SUpinder Malhi if ((vma->vm_end - vma->vm_start) != bar->len) { 739e3cf00d0SUpinder Malhi usnic_err("Bar0 Len %lu - Request map %lu\n", 740e3cf00d0SUpinder Malhi bar->len, 741e3cf00d0SUpinder Malhi vma->vm_end - vma->vm_start); 742e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 743e3cf00d0SUpinder Malhi return -EINVAL; 744e3cf00d0SUpinder Malhi } 745e3cf00d0SUpinder Malhi bus_addr = bar->bus_addr; 746e3cf00d0SUpinder Malhi len = bar->len; 747e3cf00d0SUpinder Malhi usnic_dbg("bus: %pa vaddr: %p size: %ld\n", 748e3cf00d0SUpinder Malhi &bus_addr, bar->vaddr, bar->len); 749e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 750e3cf00d0SUpinder Malhi 751e3cf00d0SUpinder Malhi return remap_pfn_range(vma, 752e3cf00d0SUpinder Malhi vma->vm_start, 753e3cf00d0SUpinder Malhi bus_addr >> PAGE_SHIFT, 754e3cf00d0SUpinder Malhi len, vma->vm_page_prot); 755e3cf00d0SUpinder Malhi } 756e3cf00d0SUpinder Malhi } 757e3cf00d0SUpinder Malhi 758e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 759e3cf00d0SUpinder Malhi usnic_err("No VF %u found\n", vfid); 760e3cf00d0SUpinder Malhi return -EINVAL; 761e3cf00d0SUpinder Malhi } 762e3cf00d0SUpinder Malhi 763e3cf00d0SUpinder Malhi /* In ib callbacks section - Start of stub funcs */ 764e3cf00d0SUpinder Malhi struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd, 76590898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr, 766b090c4e3SGal Pressman u32 flags, 767477864c8SMoni Shoua struct ib_udata *udata) 768477864c8SMoni Shoua 769e3cf00d0SUpinder Malhi { 770e3cf00d0SUpinder Malhi usnic_dbg("\n"); 771e3cf00d0SUpinder Malhi return ERR_PTR(-EPERM); 772e3cf00d0SUpinder Malhi } 773e3cf00d0SUpinder Malhi 7742553ba21SGal Pressman int usnic_ib_destroy_ah(struct ib_ah *ah, u32 flags) 775e3cf00d0SUpinder Malhi { 776e3cf00d0SUpinder Malhi usnic_dbg("\n"); 777e3cf00d0SUpinder Malhi return -EINVAL; 778e3cf00d0SUpinder Malhi } 779e3cf00d0SUpinder Malhi 780d34ac5cdSBart Van Assche int usnic_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, 781d34ac5cdSBart Van Assche const struct ib_send_wr **bad_wr) 782e3cf00d0SUpinder Malhi { 783e3cf00d0SUpinder Malhi usnic_dbg("\n"); 784e3cf00d0SUpinder Malhi return -EINVAL; 785e3cf00d0SUpinder Malhi } 786e3cf00d0SUpinder Malhi 787d34ac5cdSBart Van Assche int usnic_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, 788d34ac5cdSBart Van Assche const struct ib_recv_wr **bad_wr) 789e3cf00d0SUpinder Malhi { 790e3cf00d0SUpinder Malhi usnic_dbg("\n"); 791e3cf00d0SUpinder Malhi return -EINVAL; 792e3cf00d0SUpinder Malhi } 793e3cf00d0SUpinder Malhi 794e3cf00d0SUpinder Malhi int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries, 795e3cf00d0SUpinder Malhi struct ib_wc *wc) 796e3cf00d0SUpinder Malhi { 797e3cf00d0SUpinder Malhi usnic_dbg("\n"); 798e3cf00d0SUpinder Malhi return -EINVAL; 799e3cf00d0SUpinder Malhi } 800e3cf00d0SUpinder Malhi 801e3cf00d0SUpinder Malhi int usnic_ib_req_notify_cq(struct ib_cq *cq, 802e3cf00d0SUpinder Malhi enum ib_cq_notify_flags flags) 803e3cf00d0SUpinder Malhi { 804e3cf00d0SUpinder Malhi usnic_dbg("\n"); 805e3cf00d0SUpinder Malhi return -EINVAL; 806e3cf00d0SUpinder Malhi } 807e3cf00d0SUpinder Malhi 808e3cf00d0SUpinder Malhi struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc) 809e3cf00d0SUpinder Malhi { 810e3cf00d0SUpinder Malhi usnic_dbg("\n"); 811e3cf00d0SUpinder Malhi return ERR_PTR(-ENOMEM); 812e3cf00d0SUpinder Malhi } 813e3cf00d0SUpinder Malhi 814e3cf00d0SUpinder Malhi 815e3cf00d0SUpinder Malhi /* In ib callbacks section - End of stub funcs */ 816e3cf00d0SUpinder Malhi /* End of ib callbacks section */ 817