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> 4089944450SShamir Rabinovitch #include <rdma/uverbs_ioctl.h> 41e3cf00d0SUpinder Malhi 42e3cf00d0SUpinder Malhi #include "usnic_abi.h" 43e3cf00d0SUpinder Malhi #include "usnic_ib.h" 44e3cf00d0SUpinder Malhi #include "usnic_common_util.h" 45e3cf00d0SUpinder Malhi #include "usnic_ib_qp_grp.h" 4619188436SBart Van Assche #include "usnic_ib_verbs.h" 47e3cf00d0SUpinder Malhi #include "usnic_fwd.h" 48e3cf00d0SUpinder Malhi #include "usnic_log.h" 49e3cf00d0SUpinder Malhi #include "usnic_uiom.h" 50e3cf00d0SUpinder Malhi #include "usnic_transport.h" 51e3cf00d0SUpinder Malhi 52e3cf00d0SUpinder Malhi #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM 53e3cf00d0SUpinder Malhi 54bd8c2021SBart Van Assche const struct usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = { 55bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_UNKNOWN*/ 56bd8c2021SBart Van Assche .resources = { 57bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 58bd8c2021SBart Van Assche }, 59bd8c2021SBart Van Assche }, 60bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_ROCE_CUSTOM*/ 61bd8c2021SBart Van Assche .resources = { 62bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, 63bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, 64bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, 65bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 66bd8c2021SBart Van Assche }, 67bd8c2021SBart Van Assche }, 68bd8c2021SBart Van Assche { /*USNIC_TRANSPORT_IPV4_UDP*/ 69bd8c2021SBart Van Assche .resources = { 70bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, 71bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, 72bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, 73bd8c2021SBart Van Assche {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, 74bd8c2021SBart Van Assche }, 75bd8c2021SBart Van Assche }, 76bd8c2021SBart Van Assche }; 77bd8c2021SBart Van Assche 78e3cf00d0SUpinder Malhi static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver) 79e3cf00d0SUpinder Malhi { 803ea72861SNelson Escobar *fw_ver = *((u64 *)fw_ver_str); 81e3cf00d0SUpinder Malhi } 82e3cf00d0SUpinder Malhi 83e3cf00d0SUpinder Malhi static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp, 84e3cf00d0SUpinder Malhi struct ib_udata *udata) 85e3cf00d0SUpinder Malhi { 86e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 87e3cf00d0SUpinder Malhi struct usnic_ib_create_qp_resp resp; 88e3cf00d0SUpinder Malhi struct pci_dev *pdev; 89e3cf00d0SUpinder Malhi struct vnic_dev_bar *bar; 90e3cf00d0SUpinder Malhi struct usnic_vnic_res_chunk *chunk; 918af94ac6SUpinder Malhi struct usnic_ib_qp_grp_flow *default_flow; 92e3cf00d0SUpinder Malhi int i, err; 93e3cf00d0SUpinder Malhi 94e3cf00d0SUpinder Malhi memset(&resp, 0, sizeof(resp)); 95e3cf00d0SUpinder Malhi 96e3cf00d0SUpinder Malhi us_ibdev = qp_grp->vf->pf; 97e3cf00d0SUpinder Malhi pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); 98e3cf00d0SUpinder Malhi if (!pdev) { 99e3cf00d0SUpinder Malhi usnic_err("Failed to get pdev of qp_grp %d\n", 100e3cf00d0SUpinder Malhi qp_grp->grp_id); 101e3cf00d0SUpinder Malhi return -EFAULT; 102e3cf00d0SUpinder Malhi } 103e3cf00d0SUpinder Malhi 104e3cf00d0SUpinder Malhi bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0); 105e3cf00d0SUpinder Malhi if (!bar) { 106e3cf00d0SUpinder Malhi usnic_err("Failed to get bar0 of qp_grp %d vf %s", 107e3cf00d0SUpinder Malhi qp_grp->grp_id, pci_name(pdev)); 108e3cf00d0SUpinder Malhi return -EFAULT; 109e3cf00d0SUpinder Malhi } 110e3cf00d0SUpinder Malhi 111e3cf00d0SUpinder Malhi resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic); 112e3cf00d0SUpinder Malhi resp.bar_bus_addr = bar->bus_addr; 113e3cf00d0SUpinder Malhi resp.bar_len = bar->len; 114e3cf00d0SUpinder Malhi 115e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); 1165f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 117e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 118e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), 119e3cf00d0SUpinder Malhi qp_grp->grp_id, 120e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1215f4c7e4eSJulia Lawall return PTR_ERR(chunk); 122e3cf00d0SUpinder Malhi } 123e3cf00d0SUpinder Malhi 124e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ); 125e3cf00d0SUpinder Malhi resp.rq_cnt = chunk->cnt; 126e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 127e3cf00d0SUpinder Malhi resp.rq_idx[i] = chunk->res[i]->vnic_idx; 128e3cf00d0SUpinder Malhi 129e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ); 1305f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 131e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 132e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ), 133e3cf00d0SUpinder Malhi qp_grp->grp_id, 134e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1355f4c7e4eSJulia Lawall return PTR_ERR(chunk); 136e3cf00d0SUpinder Malhi } 137e3cf00d0SUpinder Malhi 138e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ); 139e3cf00d0SUpinder Malhi resp.wq_cnt = chunk->cnt; 140e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 141e3cf00d0SUpinder Malhi resp.wq_idx[i] = chunk->res[i]->vnic_idx; 142e3cf00d0SUpinder Malhi 143e3cf00d0SUpinder Malhi chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ); 1445f4c7e4eSJulia Lawall if (IS_ERR(chunk)) { 145e3cf00d0SUpinder Malhi usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n", 146e3cf00d0SUpinder Malhi usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ), 147e3cf00d0SUpinder Malhi qp_grp->grp_id, 148e3cf00d0SUpinder Malhi PTR_ERR(chunk)); 1495f4c7e4eSJulia Lawall return PTR_ERR(chunk); 150e3cf00d0SUpinder Malhi } 151e3cf00d0SUpinder Malhi 152e3cf00d0SUpinder Malhi WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ); 153e3cf00d0SUpinder Malhi resp.cq_cnt = chunk->cnt; 154e3cf00d0SUpinder Malhi for (i = 0; i < chunk->cnt; i++) 155e3cf00d0SUpinder Malhi resp.cq_idx[i] = chunk->res[i]->vnic_idx; 156e3cf00d0SUpinder Malhi 1578af94ac6SUpinder Malhi default_flow = list_first_entry(&qp_grp->flows_lst, 1588af94ac6SUpinder Malhi struct usnic_ib_qp_grp_flow, link); 1598af94ac6SUpinder Malhi resp.transport = default_flow->trans_type; 1608af94ac6SUpinder Malhi 161e3cf00d0SUpinder Malhi err = ib_copy_to_udata(udata, &resp, sizeof(resp)); 162e3cf00d0SUpinder Malhi if (err) { 1639de69861SJason Gunthorpe usnic_err("Failed to copy udata for %s", 1649de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 165e3cf00d0SUpinder Malhi return err; 166e3cf00d0SUpinder Malhi } 167e3cf00d0SUpinder Malhi 168e3cf00d0SUpinder Malhi return 0; 169e3cf00d0SUpinder Malhi } 170e3cf00d0SUpinder Malhi 171e3cf00d0SUpinder Malhi static struct usnic_ib_qp_grp* 172e3cf00d0SUpinder Malhi find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev, 173e3cf00d0SUpinder Malhi struct usnic_ib_pd *pd, 1748af94ac6SUpinder Malhi struct usnic_transport_spec *trans_spec, 175e3cf00d0SUpinder Malhi struct usnic_vnic_res_spec *res_spec) 176e3cf00d0SUpinder Malhi { 177e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 178e3cf00d0SUpinder Malhi struct usnic_vnic *vnic; 179e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 180e3cf00d0SUpinder Malhi struct device *dev, **dev_list; 181313e16d5SLeon Romanovsky int i; 182e3cf00d0SUpinder Malhi 183e3cf00d0SUpinder Malhi BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); 184e3cf00d0SUpinder Malhi 185e3cf00d0SUpinder Malhi if (list_empty(&us_ibdev->vf_dev_list)) { 186e3cf00d0SUpinder Malhi usnic_info("No vfs to allocate\n"); 187e3cf00d0SUpinder Malhi return NULL; 188e3cf00d0SUpinder Malhi } 189e3cf00d0SUpinder Malhi 190e3cf00d0SUpinder Malhi if (usnic_ib_share_vf) { 191e3cf00d0SUpinder Malhi /* Try to find resouces on a used vf which is in pd */ 192e3cf00d0SUpinder Malhi dev_list = usnic_uiom_get_dev_list(pd->umem_pd); 193d518a44dSDan Carpenter if (IS_ERR(dev_list)) 194d518a44dSDan Carpenter return ERR_CAST(dev_list); 195e3cf00d0SUpinder Malhi for (i = 0; dev_list[i]; i++) { 196e3cf00d0SUpinder Malhi dev = dev_list[i]; 197e3cf00d0SUpinder Malhi vf = pci_get_drvdata(to_pci_dev(dev)); 198e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 199e3cf00d0SUpinder Malhi vnic = vf->vnic; 200e3cf00d0SUpinder Malhi if (!usnic_vnic_check_room(vnic, res_spec)) { 201e3cf00d0SUpinder Malhi usnic_dbg("Found used vnic %s from %s\n", 2029de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev), 203e3cf00d0SUpinder Malhi pci_name(usnic_vnic_get_pdev( 204e3cf00d0SUpinder Malhi vnic))); 205313e16d5SLeon Romanovsky qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, 206313e16d5SLeon Romanovsky vf, pd, 207313e16d5SLeon Romanovsky res_spec, 208313e16d5SLeon Romanovsky trans_spec); 209313e16d5SLeon Romanovsky 210313e16d5SLeon Romanovsky spin_unlock(&vf->lock); 211313e16d5SLeon Romanovsky goto qp_grp_check; 212e3cf00d0SUpinder Malhi } 213e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 214e3cf00d0SUpinder Malhi 215e3cf00d0SUpinder Malhi } 216e3cf00d0SUpinder Malhi usnic_uiom_free_dev_list(dev_list); 217e3cf00d0SUpinder Malhi } 218e3cf00d0SUpinder Malhi 219e3cf00d0SUpinder Malhi /* Try to find resources on an unused vf */ 220e3cf00d0SUpinder Malhi list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) { 221e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 222e3cf00d0SUpinder Malhi vnic = vf->vnic; 223e3cf00d0SUpinder Malhi if (vf->qp_grp_ref_cnt == 0 && 224e3cf00d0SUpinder Malhi usnic_vnic_check_room(vnic, res_spec) == 0) { 225313e16d5SLeon Romanovsky qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, 226313e16d5SLeon Romanovsky pd, res_spec, 2278af94ac6SUpinder Malhi trans_spec); 228313e16d5SLeon Romanovsky 229e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 230313e16d5SLeon Romanovsky goto qp_grp_check; 231313e16d5SLeon Romanovsky } 232313e16d5SLeon Romanovsky spin_unlock(&vf->lock); 233313e16d5SLeon Romanovsky } 234313e16d5SLeon Romanovsky 2359de69861SJason Gunthorpe usnic_info("No free qp grp found on %s\n", 2369de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 237313e16d5SLeon Romanovsky return ERR_PTR(-ENOMEM); 238313e16d5SLeon Romanovsky 239313e16d5SLeon Romanovsky qp_grp_check: 240e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(qp_grp)) { 241e3cf00d0SUpinder Malhi usnic_err("Failed to allocate qp_grp\n"); 242e3cf00d0SUpinder Malhi return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM); 243e3cf00d0SUpinder Malhi } 244e3cf00d0SUpinder Malhi return qp_grp; 245e3cf00d0SUpinder Malhi } 246e3cf00d0SUpinder Malhi 247e3cf00d0SUpinder Malhi static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) 248e3cf00d0SUpinder Malhi { 249e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf = qp_grp->vf; 250e3cf00d0SUpinder Malhi 251e3cf00d0SUpinder Malhi WARN_ON(qp_grp->state != IB_QPS_RESET); 252e3cf00d0SUpinder Malhi 253e3cf00d0SUpinder Malhi spin_lock(&vf->lock); 254e3cf00d0SUpinder Malhi usnic_ib_qp_grp_destroy(qp_grp); 255e3cf00d0SUpinder Malhi spin_unlock(&vf->lock); 256e3cf00d0SUpinder Malhi } 257e3cf00d0SUpinder Malhi 258c7845bcaSUpinder Malhi static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd) 259c7845bcaSUpinder Malhi { 260c7845bcaSUpinder Malhi if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN || 261c7845bcaSUpinder Malhi cmd.spec.trans_type >= USNIC_TRANSPORT_MAX) 262c7845bcaSUpinder Malhi return -EINVAL; 263c7845bcaSUpinder Malhi 264c7845bcaSUpinder Malhi return 0; 265c7845bcaSUpinder Malhi } 266c7845bcaSUpinder Malhi 267e3cf00d0SUpinder Malhi /* Start of ib callback functions */ 268e3cf00d0SUpinder Malhi 269e3cf00d0SUpinder Malhi enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device, 270e3cf00d0SUpinder Malhi u8 port_num) 271e3cf00d0SUpinder Malhi { 272e3cf00d0SUpinder Malhi return IB_LINK_LAYER_ETHERNET; 273e3cf00d0SUpinder Malhi } 274e3cf00d0SUpinder Malhi 275e3cf00d0SUpinder Malhi int usnic_ib_query_device(struct ib_device *ibdev, 2762528e33eSMatan Barak struct ib_device_attr *props, 2772528e33eSMatan Barak struct ib_udata *uhw) 278e3cf00d0SUpinder Malhi { 279e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 280e3cf00d0SUpinder Malhi union ib_gid gid; 281e3cf00d0SUpinder Malhi struct ethtool_drvinfo info; 282e3cf00d0SUpinder Malhi int qp_per_vf; 283e3cf00d0SUpinder Malhi 284e3cf00d0SUpinder Malhi usnic_dbg("\n"); 2852528e33eSMatan Barak if (uhw->inlen || uhw->outlen) 2862528e33eSMatan Barak return -EINVAL; 2872528e33eSMatan Barak 288e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 289e3cf00d0SUpinder Malhi us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); 290e3cf00d0SUpinder Malhi memset(props, 0, sizeof(*props)); 291c7845bcaSUpinder Malhi usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, 292c7845bcaSUpinder Malhi &gid.raw[0]); 293e3cf00d0SUpinder Malhi memcpy(&props->sys_image_guid, &gid.global.interface_id, 294e3cf00d0SUpinder Malhi sizeof(gid.global.interface_id)); 295e3cf00d0SUpinder Malhi usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver); 296e3cf00d0SUpinder Malhi props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE; 297e3cf00d0SUpinder Malhi props->page_size_cap = USNIC_UIOM_PAGE_SIZE; 298e3cf00d0SUpinder Malhi props->vendor_id = PCI_VENDOR_ID_CISCO; 299e3cf00d0SUpinder Malhi props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC; 300e3cf00d0SUpinder Malhi props->hw_ver = us_ibdev->pdev->subsystem_device; 301e3cf00d0SUpinder Malhi qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], 302e3cf00d0SUpinder Malhi us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); 303e3cf00d0SUpinder Malhi props->max_qp = qp_per_vf * 3042c935bc5SPeter Zijlstra kref_read(&us_ibdev->vf_cnt); 305e3cf00d0SUpinder Malhi props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT | 306e3cf00d0SUpinder Malhi IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 307e3cf00d0SUpinder Malhi props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] * 3082c935bc5SPeter Zijlstra kref_read(&us_ibdev->vf_cnt); 309e3cf00d0SUpinder Malhi props->max_pd = USNIC_UIOM_MAX_PD_CNT; 310e3cf00d0SUpinder Malhi props->max_mr = USNIC_UIOM_MAX_MR_CNT; 311e3cf00d0SUpinder Malhi props->local_ca_ack_delay = 0; 312e3cf00d0SUpinder Malhi props->max_pkeys = 0; 313e3cf00d0SUpinder Malhi props->atomic_cap = IB_ATOMIC_NONE; 314e3cf00d0SUpinder Malhi props->masked_atomic_cap = props->atomic_cap; 315e3cf00d0SUpinder Malhi props->max_qp_rd_atom = 0; 316e3cf00d0SUpinder Malhi props->max_qp_init_rd_atom = 0; 317e3cf00d0SUpinder Malhi props->max_res_rd_atom = 0; 318e3cf00d0SUpinder Malhi props->max_srq = 0; 319e3cf00d0SUpinder Malhi props->max_srq_wr = 0; 320e3cf00d0SUpinder Malhi props->max_srq_sge = 0; 321e3cf00d0SUpinder Malhi props->max_fast_reg_page_list_len = 0; 322e3cf00d0SUpinder Malhi props->max_mcast_grp = 0; 323e3cf00d0SUpinder Malhi props->max_mcast_qp_attach = 0; 324e3cf00d0SUpinder Malhi props->max_total_mcast_qp_attach = 0; 325e3cf00d0SUpinder Malhi props->max_map_per_fmr = 0; 326e3cf00d0SUpinder Malhi /* Owned by Userspace 327e3cf00d0SUpinder Malhi * max_qp_wr, max_sge, max_sge_rd, max_cqe */ 328e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 329e3cf00d0SUpinder Malhi 330e3cf00d0SUpinder Malhi return 0; 331e3cf00d0SUpinder Malhi } 332e3cf00d0SUpinder Malhi 333e3cf00d0SUpinder Malhi int usnic_ib_query_port(struct ib_device *ibdev, u8 port, 334e3cf00d0SUpinder Malhi struct ib_port_attr *props) 335e3cf00d0SUpinder Malhi { 336e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 337e3cf00d0SUpinder Malhi 338e3cf00d0SUpinder Malhi usnic_dbg("\n"); 339e3cf00d0SUpinder Malhi 3407be05753SSelvin Xavier if (ib_get_eth_speed(ibdev, port, &props->active_speed, 3418036e90fSParvi Kaustubhi &props->active_width)) 342d4186194SYuval Shaia return -EINVAL; 343d4186194SYuval Shaia 3448036e90fSParvi Kaustubhi /* 3458036e90fSParvi Kaustubhi * usdev_lock is acquired after (and not before) ib_get_eth_speed call 3468036e90fSParvi Kaustubhi * because acquiring rtnl_lock in ib_get_eth_speed, while holding 3478036e90fSParvi Kaustubhi * usdev_lock could lead to a deadlock. 3488036e90fSParvi Kaustubhi */ 3498036e90fSParvi Kaustubhi mutex_lock(&us_ibdev->usdev_lock); 350c4550c63SOr Gerlitz /* props being zeroed by the caller, avoid zeroing it here */ 351e3cf00d0SUpinder Malhi 352e3cf00d0SUpinder Malhi props->lid = 0; 353e3cf00d0SUpinder Malhi props->lmc = 1; 354e3cf00d0SUpinder Malhi props->sm_lid = 0; 355e3cf00d0SUpinder Malhi props->sm_sl = 0; 356e3cf00d0SUpinder Malhi 357c7845bcaSUpinder Malhi if (!us_ibdev->ufdev->link_up) { 358e3cf00d0SUpinder Malhi props->state = IB_PORT_DOWN; 359e3cf00d0SUpinder Malhi props->phys_state = 3; 360c7845bcaSUpinder Malhi } else if (!us_ibdev->ufdev->inaddr) { 361c7845bcaSUpinder Malhi props->state = IB_PORT_INIT; 362c7845bcaSUpinder Malhi props->phys_state = 4; 363c7845bcaSUpinder Malhi } else { 364c7845bcaSUpinder Malhi props->state = IB_PORT_ACTIVE; 365c7845bcaSUpinder Malhi props->phys_state = 5; 366e3cf00d0SUpinder Malhi } 367e3cf00d0SUpinder Malhi 368e3cf00d0SUpinder Malhi props->port_cap_flags = 0; 369e3cf00d0SUpinder Malhi props->gid_tbl_len = 1; 370e3cf00d0SUpinder Malhi props->pkey_tbl_len = 1; 371e3cf00d0SUpinder Malhi props->bad_pkey_cntr = 0; 372e3cf00d0SUpinder Malhi props->qkey_viol_cntr = 0; 373e3cf00d0SUpinder Malhi props->max_mtu = IB_MTU_4096; 3748af94ac6SUpinder Malhi props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu); 375e3cf00d0SUpinder Malhi /* Userspace will adjust for hdrs */ 3768af94ac6SUpinder Malhi props->max_msg_sz = us_ibdev->ufdev->mtu; 377e3cf00d0SUpinder Malhi props->max_vl_num = 1; 378e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 379e3cf00d0SUpinder Malhi 380e3cf00d0SUpinder Malhi return 0; 381e3cf00d0SUpinder Malhi } 382e3cf00d0SUpinder Malhi 383e3cf00d0SUpinder Malhi int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, 384e3cf00d0SUpinder Malhi int qp_attr_mask, 385e3cf00d0SUpinder Malhi struct ib_qp_init_attr *qp_init_attr) 386e3cf00d0SUpinder Malhi { 387e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 388e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 389e3cf00d0SUpinder Malhi int err; 390e3cf00d0SUpinder Malhi 391e3cf00d0SUpinder Malhi usnic_dbg("\n"); 392e3cf00d0SUpinder Malhi 393e3cf00d0SUpinder Malhi memset(qp_attr, 0, sizeof(*qp_attr)); 394e3cf00d0SUpinder Malhi memset(qp_init_attr, 0, sizeof(*qp_init_attr)); 395e3cf00d0SUpinder Malhi 396e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(qp); 397e3cf00d0SUpinder Malhi vf = qp_grp->vf; 398e3cf00d0SUpinder Malhi mutex_lock(&vf->pf->usdev_lock); 399e3cf00d0SUpinder Malhi usnic_dbg("\n"); 400e3cf00d0SUpinder Malhi qp_attr->qp_state = qp_grp->state; 401e3cf00d0SUpinder Malhi qp_attr->cur_qp_state = qp_grp->state; 402e3cf00d0SUpinder Malhi 403e3cf00d0SUpinder Malhi switch (qp_grp->ibqp.qp_type) { 404e3cf00d0SUpinder Malhi case IB_QPT_UD: 405e3cf00d0SUpinder Malhi qp_attr->qkey = 0; 406e3cf00d0SUpinder Malhi break; 407e3cf00d0SUpinder Malhi default: 408e3cf00d0SUpinder Malhi usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type); 409e3cf00d0SUpinder Malhi err = -EINVAL; 410e3cf00d0SUpinder Malhi goto err_out; 411e3cf00d0SUpinder Malhi } 412e3cf00d0SUpinder Malhi 413e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 414e3cf00d0SUpinder Malhi return 0; 415e3cf00d0SUpinder Malhi 416e3cf00d0SUpinder Malhi err_out: 417e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 418e3cf00d0SUpinder Malhi return err; 419e3cf00d0SUpinder Malhi } 420e3cf00d0SUpinder Malhi 421e3cf00d0SUpinder Malhi int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 422e3cf00d0SUpinder Malhi union ib_gid *gid) 423e3cf00d0SUpinder Malhi { 424e3cf00d0SUpinder Malhi 425e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 426e3cf00d0SUpinder Malhi usnic_dbg("\n"); 427e3cf00d0SUpinder Malhi 428e3cf00d0SUpinder Malhi if (index > 1) 429e3cf00d0SUpinder Malhi return -EINVAL; 430e3cf00d0SUpinder Malhi 431e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 432e3cf00d0SUpinder Malhi memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 433c7845bcaSUpinder Malhi usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr, 434c7845bcaSUpinder Malhi &gid->raw[0]); 435e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 436e3cf00d0SUpinder Malhi 437e3cf00d0SUpinder Malhi return 0; 438e3cf00d0SUpinder Malhi } 439e3cf00d0SUpinder Malhi 440e3cf00d0SUpinder Malhi int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 441e3cf00d0SUpinder Malhi u16 *pkey) 442e3cf00d0SUpinder Malhi { 4434959d5daSGal Pressman if (index > 0) 444e3cf00d0SUpinder Malhi return -EINVAL; 445e3cf00d0SUpinder Malhi 446e3cf00d0SUpinder Malhi *pkey = 0xffff; 447e3cf00d0SUpinder Malhi return 0; 448e3cf00d0SUpinder Malhi } 449e3cf00d0SUpinder Malhi 45021a428a0SLeon Romanovsky int usnic_ib_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context, 451e3cf00d0SUpinder Malhi struct ib_udata *udata) 452e3cf00d0SUpinder Malhi { 45321a428a0SLeon Romanovsky struct usnic_ib_pd *pd = to_upd(ibpd); 454e3cf00d0SUpinder Malhi void *umem_pd; 455e3cf00d0SUpinder Malhi 456e3cf00d0SUpinder Malhi umem_pd = pd->umem_pd = usnic_uiom_alloc_pd(); 457e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(umem_pd)) { 45821a428a0SLeon Romanovsky return umem_pd ? PTR_ERR(umem_pd) : -ENOMEM; 459e3cf00d0SUpinder Malhi } 460e3cf00d0SUpinder Malhi 461e3cf00d0SUpinder Malhi return 0; 462e3cf00d0SUpinder Malhi } 463e3cf00d0SUpinder Malhi 464c4367a26SShamir Rabinovitch void usnic_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata) 46521a428a0SLeon Romanovsky { 46621a428a0SLeon Romanovsky usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd); 46721a428a0SLeon Romanovsky } 46821a428a0SLeon Romanovsky 469e3cf00d0SUpinder Malhi struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd, 470e3cf00d0SUpinder Malhi struct ib_qp_init_attr *init_attr, 471e3cf00d0SUpinder Malhi struct ib_udata *udata) 472e3cf00d0SUpinder Malhi { 473e3cf00d0SUpinder Malhi int err; 474e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 475e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 47689944450SShamir Rabinovitch struct usnic_ib_ucontext *ucontext = rdma_udata_to_drv_context( 47789944450SShamir Rabinovitch udata, struct usnic_ib_ucontext, ibucontext); 478e3cf00d0SUpinder Malhi int cq_cnt; 479e3cf00d0SUpinder Malhi struct usnic_vnic_res_spec res_spec; 480c7845bcaSUpinder Malhi struct usnic_ib_create_qp_cmd cmd; 4818af94ac6SUpinder Malhi struct usnic_transport_spec trans_spec; 482e3cf00d0SUpinder Malhi 483e3cf00d0SUpinder Malhi usnic_dbg("\n"); 484e3cf00d0SUpinder Malhi 485e3cf00d0SUpinder Malhi us_ibdev = to_usdev(pd->device); 486e3cf00d0SUpinder Malhi 48760093dc0SOr Gerlitz if (init_attr->create_flags) 48860093dc0SOr Gerlitz return ERR_PTR(-EINVAL); 48960093dc0SOr Gerlitz 490c7845bcaSUpinder Malhi err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); 491c7845bcaSUpinder Malhi if (err) { 492c7845bcaSUpinder Malhi usnic_err("%s: cannot copy udata for create_qp\n", 4939de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 494c7845bcaSUpinder Malhi return ERR_PTR(-EINVAL); 495c7845bcaSUpinder Malhi } 496c7845bcaSUpinder Malhi 497c7845bcaSUpinder Malhi err = create_qp_validate_user_data(cmd); 498c7845bcaSUpinder Malhi if (err) { 499c7845bcaSUpinder Malhi usnic_err("%s: Failed to validate user data\n", 5009de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev)); 501c7845bcaSUpinder Malhi return ERR_PTR(-EINVAL); 502c7845bcaSUpinder Malhi } 503c7845bcaSUpinder Malhi 504e3cf00d0SUpinder Malhi if (init_attr->qp_type != IB_QPT_UD) { 505e3cf00d0SUpinder Malhi usnic_err("%s asked to make a non-UD QP: %d\n", 5069de69861SJason Gunthorpe dev_name(&us_ibdev->ib_dev.dev), init_attr->qp_type); 507e3cf00d0SUpinder Malhi return ERR_PTR(-EINVAL); 508e3cf00d0SUpinder Malhi } 509e3cf00d0SUpinder Malhi 510c7845bcaSUpinder Malhi trans_spec = cmd.spec; 511e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 5128af94ac6SUpinder Malhi cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2; 5138af94ac6SUpinder Malhi res_spec = min_transport_spec[trans_spec.trans_type]; 514e3cf00d0SUpinder Malhi usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt); 515e3cf00d0SUpinder Malhi qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd), 5168af94ac6SUpinder Malhi &trans_spec, 517e3cf00d0SUpinder Malhi &res_spec); 518e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(qp_grp)) { 5196a54d9f9SUpinder Malhi err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM; 520e3cf00d0SUpinder Malhi goto out_release_mutex; 521e3cf00d0SUpinder Malhi } 522e3cf00d0SUpinder Malhi 523e3cf00d0SUpinder Malhi err = usnic_ib_fill_create_qp_resp(qp_grp, udata); 524e3cf00d0SUpinder Malhi if (err) { 525e3cf00d0SUpinder Malhi err = -EBUSY; 526e3cf00d0SUpinder Malhi goto out_release_qp_grp; 527e3cf00d0SUpinder Malhi } 528e3cf00d0SUpinder Malhi 529e3cf00d0SUpinder Malhi qp_grp->ctx = ucontext; 530e3cf00d0SUpinder Malhi list_add_tail(&qp_grp->link, &ucontext->qp_grp_list); 531e3cf00d0SUpinder Malhi usnic_ib_log_vf(qp_grp->vf); 532e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 533e3cf00d0SUpinder Malhi return &qp_grp->ibqp; 534e3cf00d0SUpinder Malhi 535e3cf00d0SUpinder Malhi out_release_qp_grp: 536e3cf00d0SUpinder Malhi qp_grp_destroy(qp_grp); 537e3cf00d0SUpinder Malhi out_release_mutex: 538e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 539e3cf00d0SUpinder Malhi return ERR_PTR(err); 540e3cf00d0SUpinder Malhi } 541e3cf00d0SUpinder Malhi 542c4367a26SShamir Rabinovitch int usnic_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) 543e3cf00d0SUpinder Malhi { 544e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 545e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 546e3cf00d0SUpinder Malhi 547e3cf00d0SUpinder Malhi usnic_dbg("\n"); 548e3cf00d0SUpinder Malhi 549e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(qp); 550e3cf00d0SUpinder Malhi vf = qp_grp->vf; 551e3cf00d0SUpinder Malhi mutex_lock(&vf->pf->usdev_lock); 552e3cf00d0SUpinder Malhi if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) { 553e3cf00d0SUpinder Malhi usnic_err("Failed to move qp grp %u to reset\n", 554e3cf00d0SUpinder Malhi qp_grp->grp_id); 555e3cf00d0SUpinder Malhi } 556e3cf00d0SUpinder Malhi 557e3cf00d0SUpinder Malhi list_del(&qp_grp->link); 558e3cf00d0SUpinder Malhi qp_grp_destroy(qp_grp); 559e3cf00d0SUpinder Malhi mutex_unlock(&vf->pf->usdev_lock); 560e3cf00d0SUpinder Malhi 561e3cf00d0SUpinder Malhi return 0; 562e3cf00d0SUpinder Malhi } 563e3cf00d0SUpinder Malhi 564e3cf00d0SUpinder Malhi int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 565e3cf00d0SUpinder Malhi int attr_mask, struct ib_udata *udata) 566e3cf00d0SUpinder Malhi { 567e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 568e3cf00d0SUpinder Malhi int status; 569e3cf00d0SUpinder Malhi usnic_dbg("\n"); 570e3cf00d0SUpinder Malhi 571e3cf00d0SUpinder Malhi qp_grp = to_uqp_grp(ibqp); 572e3cf00d0SUpinder Malhi 573e3cf00d0SUpinder Malhi mutex_lock(&qp_grp->vf->pf->usdev_lock); 57489e5323cSNelson Escobar if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) { 57589e5323cSNelson Escobar /* usnic devices only have one port */ 57689e5323cSNelson Escobar status = -EINVAL; 57789e5323cSNelson Escobar goto out_unlock; 57889e5323cSNelson Escobar } 57989e5323cSNelson Escobar if (attr_mask & IB_QP_STATE) { 58089e5323cSNelson Escobar status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL); 581e3cf00d0SUpinder Malhi } else { 58289e5323cSNelson Escobar usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask); 583e3cf00d0SUpinder Malhi status = -EINVAL; 584e3cf00d0SUpinder Malhi } 585e3cf00d0SUpinder Malhi 58689e5323cSNelson Escobar out_unlock: 587e3cf00d0SUpinder Malhi mutex_unlock(&qp_grp->vf->pf->usdev_lock); 588e3cf00d0SUpinder Malhi return status; 589e3cf00d0SUpinder Malhi } 590e3cf00d0SUpinder Malhi 591bcf4c1eaSMatan Barak struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev, 592bcf4c1eaSMatan Barak const struct ib_cq_init_attr *attr, 593bcf4c1eaSMatan Barak struct ib_ucontext *context, 594e3cf00d0SUpinder Malhi struct ib_udata *udata) 595e3cf00d0SUpinder Malhi { 596e3cf00d0SUpinder Malhi struct ib_cq *cq; 597e3cf00d0SUpinder Malhi 598e3cf00d0SUpinder Malhi usnic_dbg("\n"); 599bcf4c1eaSMatan Barak if (attr->flags) 600bcf4c1eaSMatan Barak return ERR_PTR(-EINVAL); 601bcf4c1eaSMatan Barak 602e3cf00d0SUpinder Malhi cq = kzalloc(sizeof(*cq), GFP_KERNEL); 603e3cf00d0SUpinder Malhi if (!cq) 604e3cf00d0SUpinder Malhi return ERR_PTR(-EBUSY); 605e3cf00d0SUpinder Malhi 606e3cf00d0SUpinder Malhi return cq; 607e3cf00d0SUpinder Malhi } 608e3cf00d0SUpinder Malhi 609c4367a26SShamir Rabinovitch int usnic_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata) 610e3cf00d0SUpinder Malhi { 611e3cf00d0SUpinder Malhi usnic_dbg("\n"); 612e3cf00d0SUpinder Malhi kfree(cq); 613e3cf00d0SUpinder Malhi return 0; 614e3cf00d0SUpinder Malhi } 615e3cf00d0SUpinder Malhi 616e3cf00d0SUpinder Malhi struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length, 617e3cf00d0SUpinder Malhi u64 virt_addr, int access_flags, 618e3cf00d0SUpinder Malhi struct ib_udata *udata) 619e3cf00d0SUpinder Malhi { 620e3cf00d0SUpinder Malhi struct usnic_ib_mr *mr; 621e3cf00d0SUpinder Malhi int err; 622e3cf00d0SUpinder Malhi 623e3cf00d0SUpinder Malhi usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start, 624e3cf00d0SUpinder Malhi virt_addr, length); 625e3cf00d0SUpinder Malhi 626e3cf00d0SUpinder Malhi mr = kzalloc(sizeof(*mr), GFP_KERNEL); 62759f65f49SJulia Lawall if (!mr) 62859f65f49SJulia Lawall return ERR_PTR(-ENOMEM); 629e3cf00d0SUpinder Malhi 630e3cf00d0SUpinder Malhi mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length, 631e3cf00d0SUpinder Malhi access_flags, 0); 632e3cf00d0SUpinder Malhi if (IS_ERR_OR_NULL(mr->umem)) { 6336a54d9f9SUpinder Malhi err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT; 634e3cf00d0SUpinder Malhi goto err_free; 635e3cf00d0SUpinder Malhi } 636e3cf00d0SUpinder Malhi 637e3cf00d0SUpinder Malhi mr->ibmr.lkey = mr->ibmr.rkey = 0; 638e3cf00d0SUpinder Malhi return &mr->ibmr; 639e3cf00d0SUpinder Malhi 640e3cf00d0SUpinder Malhi err_free: 641e3cf00d0SUpinder Malhi kfree(mr); 642e3cf00d0SUpinder Malhi return ERR_PTR(err); 643e3cf00d0SUpinder Malhi } 644e3cf00d0SUpinder Malhi 645c4367a26SShamir Rabinovitch int usnic_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) 646e3cf00d0SUpinder Malhi { 647e3cf00d0SUpinder Malhi struct usnic_ib_mr *mr = to_umr(ibmr); 648e3cf00d0SUpinder Malhi 649e3cf00d0SUpinder Malhi usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length); 650e3cf00d0SUpinder Malhi 65143cbd64bSJason Gunthorpe usnic_uiom_reg_release(mr->umem, ibmr->uobject->context); 652e3cf00d0SUpinder Malhi kfree(mr); 653e3cf00d0SUpinder Malhi return 0; 654e3cf00d0SUpinder Malhi } 655e3cf00d0SUpinder Malhi 656a2a074efSLeon Romanovsky int usnic_ib_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) 657e3cf00d0SUpinder Malhi { 658a2a074efSLeon Romanovsky struct ib_device *ibdev = uctx->device; 659a2a074efSLeon Romanovsky struct usnic_ib_ucontext *context = to_ucontext(uctx); 660e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibdev); 661e3cf00d0SUpinder Malhi usnic_dbg("\n"); 662e3cf00d0SUpinder Malhi 663e3cf00d0SUpinder Malhi INIT_LIST_HEAD(&context->qp_grp_list); 664e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 665e3cf00d0SUpinder Malhi list_add_tail(&context->link, &us_ibdev->ctx_list); 666e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 667e3cf00d0SUpinder Malhi 668a2a074efSLeon Romanovsky return 0; 669e3cf00d0SUpinder Malhi } 670e3cf00d0SUpinder Malhi 671a2a074efSLeon Romanovsky void usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 672e3cf00d0SUpinder Malhi { 673e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *context = to_uucontext(ibcontext); 674e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device); 675e3cf00d0SUpinder Malhi usnic_dbg("\n"); 676e3cf00d0SUpinder Malhi 677e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 678a2a074efSLeon Romanovsky WARN_ON_ONCE(!list_empty(&context->qp_grp_list)); 679e3cf00d0SUpinder Malhi list_del(&context->link); 680e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 681e3cf00d0SUpinder Malhi } 682e3cf00d0SUpinder Malhi 683e3cf00d0SUpinder Malhi int usnic_ib_mmap(struct ib_ucontext *context, 684e3cf00d0SUpinder Malhi struct vm_area_struct *vma) 685e3cf00d0SUpinder Malhi { 686e3cf00d0SUpinder Malhi struct usnic_ib_ucontext *uctx = to_ucontext(context); 687e3cf00d0SUpinder Malhi struct usnic_ib_dev *us_ibdev; 688e3cf00d0SUpinder Malhi struct usnic_ib_qp_grp *qp_grp; 689e3cf00d0SUpinder Malhi struct usnic_ib_vf *vf; 690e3cf00d0SUpinder Malhi struct vnic_dev_bar *bar; 691e3cf00d0SUpinder Malhi dma_addr_t bus_addr; 692e3cf00d0SUpinder Malhi unsigned int len; 693e3cf00d0SUpinder Malhi unsigned int vfid; 694e3cf00d0SUpinder Malhi 695e3cf00d0SUpinder Malhi usnic_dbg("\n"); 696e3cf00d0SUpinder Malhi 697e3cf00d0SUpinder Malhi us_ibdev = to_usdev(context->device); 698e3cf00d0SUpinder Malhi vma->vm_flags |= VM_IO; 699e3cf00d0SUpinder Malhi vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 700e3cf00d0SUpinder Malhi vfid = vma->vm_pgoff; 701e3cf00d0SUpinder Malhi usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n", 702e3cf00d0SUpinder Malhi vma->vm_pgoff, PAGE_SHIFT, vfid); 703e3cf00d0SUpinder Malhi 704e3cf00d0SUpinder Malhi mutex_lock(&us_ibdev->usdev_lock); 705e3cf00d0SUpinder Malhi list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) { 706e3cf00d0SUpinder Malhi vf = qp_grp->vf; 707e3cf00d0SUpinder Malhi if (usnic_vnic_get_index(vf->vnic) == vfid) { 708e3cf00d0SUpinder Malhi bar = usnic_vnic_get_bar(vf->vnic, 0); 709e3cf00d0SUpinder Malhi if ((vma->vm_end - vma->vm_start) != bar->len) { 710e3cf00d0SUpinder Malhi usnic_err("Bar0 Len %lu - Request map %lu\n", 711e3cf00d0SUpinder Malhi bar->len, 712e3cf00d0SUpinder Malhi vma->vm_end - vma->vm_start); 713e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 714e3cf00d0SUpinder Malhi return -EINVAL; 715e3cf00d0SUpinder Malhi } 716e3cf00d0SUpinder Malhi bus_addr = bar->bus_addr; 717e3cf00d0SUpinder Malhi len = bar->len; 718e3cf00d0SUpinder Malhi usnic_dbg("bus: %pa vaddr: %p size: %ld\n", 719e3cf00d0SUpinder Malhi &bus_addr, bar->vaddr, bar->len); 720e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 721e3cf00d0SUpinder Malhi 722e3cf00d0SUpinder Malhi return remap_pfn_range(vma, 723e3cf00d0SUpinder Malhi vma->vm_start, 724e3cf00d0SUpinder Malhi bus_addr >> PAGE_SHIFT, 725e3cf00d0SUpinder Malhi len, vma->vm_page_prot); 726e3cf00d0SUpinder Malhi } 727e3cf00d0SUpinder Malhi } 728e3cf00d0SUpinder Malhi 729e3cf00d0SUpinder Malhi mutex_unlock(&us_ibdev->usdev_lock); 730e3cf00d0SUpinder Malhi usnic_err("No VF %u found\n", vfid); 731e3cf00d0SUpinder Malhi return -EINVAL; 732e3cf00d0SUpinder Malhi } 733e3cf00d0SUpinder Malhi 734