/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #define LINUXKPI_PARAM_PREFIX iw_cxgbe_ #include "opt_inet.h" #ifdef TCP_OFFLOAD #include #include #include #include #include "iw_cxgbe.h" #include "user.h" static int fastreg_support = 1; module_param(fastreg_support, int, 0644); MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)"); static int c4iw_modify_port(struct ib_device *ibdev, u8 port, int port_modify_mask, struct ib_port_modify *props) { return -ENOSYS; } static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr, struct ib_udata *udata) { return ERR_PTR(-ENOSYS); } static int c4iw_ah_destroy(struct ib_ah *ah) { return -ENOSYS; } static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { return -ENOSYS; } static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { return -ENOSYS; } static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh, const struct ib_mad_hdr *in_mad, size_t in_mad_size, struct ib_mad_hdr *out_mad, size_t *out_mad_size, u16 *out_mad_pkey_index) { return -ENOSYS; } void _c4iw_free_ucontext(struct kref *kref) { struct c4iw_ucontext *ucontext; struct c4iw_dev *rhp; struct c4iw_mm_entry *mm, *tmp; ucontext = container_of(kref, struct c4iw_ucontext, kref); rhp = to_c4iw_dev(ucontext->ibucontext.device); CTR2(KTR_IW_CXGBE, "%s ucontext %p", __func__, ucontext); list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) kfree(mm); c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); kfree(ucontext); } static int c4iw_dealloc_ucontext(struct ib_ucontext *context) { struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); c4iw_put_ucontext(ucontext); return 0; } static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct c4iw_ucontext *context; struct c4iw_dev *rhp = to_c4iw_dev(ibdev); static int warned; struct c4iw_alloc_ucontext_resp uresp; int ret = 0; struct c4iw_mm_entry *mm = NULL; PDBG("%s ibdev %p\n", __func__, ibdev); context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) { ret = -ENOMEM; goto err; } c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); INIT_LIST_HEAD(&context->mmaps); spin_lock_init(&context->mmap_lock); kref_init(&context->kref); if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) { if (!warned++) log(LOG_ERR, "%s Warning - downlevel libcxgb4 " "(non-fatal), device status page disabled.\n", __func__); rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED; } else { mm = kmalloc(sizeof *mm, GFP_KERNEL); if (!mm) goto err_free; uresp.status_page_size = PAGE_SIZE; spin_lock(&context->mmap_lock); uresp.status_page_key = context->key; context->key += PAGE_SIZE; spin_unlock(&context->mmap_lock); ret = ib_copy_to_udata(udata, &uresp, sizeof(uresp) - sizeof(uresp.reserved)); if (ret) goto err_mm; mm->key = uresp.status_page_key; mm->addr = vtophys(rhp->rdev.status_page); mm->len = PAGE_SIZE; insert_mmap(context, mm); } return &context->ibucontext; err_mm: kfree(mm); err_free: kfree(context); err: return ERR_PTR(ret); } static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) { int len = vma->vm_end - vma->vm_start; u32 key = vma->vm_pgoff << PAGE_SHIFT; struct c4iw_rdev *rdev; int ret = 0; struct c4iw_mm_entry *mm; struct c4iw_ucontext *ucontext; u64 addr = 0; CTR4(KTR_IW_CXGBE, "%s:1 ctx %p vma %p, vm_start %u", __func__, context, vma, vma->vm_start); CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, vma->vm_pgoff, key, len); if (vma->vm_start & (PAGE_SIZE-1)) { CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", __func__, vma->vm_start, vma); return -EINVAL; } rdev = &(to_c4iw_dev(context->device)->rdev); ucontext = to_c4iw_ucontext(context); mm = remove_mmap(ucontext, key, len); if (!mm) { CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, ucontext, key, len); return -EINVAL; } addr = mm->addr; kfree(mm); /* user DB-GTS registers if addr in udbs_res range, * else WQ or CQ memory. * */ if (rdev->adap->iwt.wc_en && addr >= rdev->bar2_pa && addr < rdev->bar2_pa + rdev->bar2_len) vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); ret = io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, len, vma->vm_page_prot); CTR4(KTR_IW_CXGBE, "%s:4 ctx %p vma %p ret %u", __func__, context, vma, ret); return ret; } static int c4iw_deallocate_pd(struct ib_pd *pd) { struct c4iw_pd *php = to_c4iw_pd(pd); struct c4iw_dev *rhp = php->rhp; CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); mutex_lock(&rhp->rdev.stats.lock); rhp->rdev.stats.pd.cur--; mutex_unlock(&rhp->rdev.stats.lock); kfree(php); return (0); } static struct ib_pd * c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct c4iw_pd *php; u32 pdid; struct c4iw_dev *rhp; CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, context, udata); rhp = (struct c4iw_dev *) ibdev; pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); if (!pdid) return ERR_PTR(-EINVAL); php = kzalloc(sizeof(*php), GFP_KERNEL); if (!php) { c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); return ERR_PTR(-ENOMEM); } php->pdid = pdid; php->rhp = rhp; if (context) { if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { c4iw_deallocate_pd(&php->ibpd); return ERR_PTR(-EFAULT); } } mutex_lock(&rhp->rdev.stats.lock); rhp->rdev.stats.pd.cur++; if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; mutex_unlock(&rhp->rdev.stats.lock); CTR6(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, ibdev, context, udata, pdid, php); return (&php->ibpd); } static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) { CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, ibdev, port, index, pkey); *pkey = 0; return (0); } static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct c4iw_dev *dev; struct port_info *pi; struct adapter *sc; CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, ibdev, port, index, gid); memset(&gid->raw[0], 0, sizeof(gid->raw)); dev = to_c4iw_dev(ibdev); sc = dev->rdev.adap; if (port == 0 || port > sc->params.nports) return (-EINVAL); pi = sc->port[port - 1]; memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN); return (0); } static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *uhw) { struct c4iw_dev *dev = to_c4iw_dev(ibdev); struct adapter *sc = dev->rdev.adap; CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); if (uhw->inlen || uhw->outlen) return -EINVAL; memset(props, 0, sizeof *props); memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); props->hw_ver = sc->params.chipid; props->fw_ver = sc->params.fw_vers; props->device_cap_flags = dev->device_cap_flags; props->page_size_cap = T4_PAGESIZE_MASK; props->vendor_id = pci_get_vendor(sc->dev); props->vendor_part_id = pci_get_device(sc->dev); props->max_mr_size = T4_MAX_MR_SIZE; props->max_qp = sc->vres.qp.size / 2; props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth; props->max_sge = T4_MAX_RECV_SGE; props->max_sge_rd = 1; props->max_res_rd_atom = sc->params.max_ird_adapter; props->max_qp_rd_atom = min(sc->params.max_ordird_qp, c4iw_max_read_depth); props->max_qp_init_rd_atom = props->max_qp_rd_atom; props->max_cq = sc->vres.qp.size; props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth; props->max_mr = c4iw_num_stags(&dev->rdev); props->max_pd = T4_MAX_NUM_PD; props->local_ca_ack_delay = 0; props->max_fast_reg_page_list_len = t4_max_fr_depth(&dev->rdev, use_dsgl); return (0); } /* * Returns -errno on failure. */ static int c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct c4iw_dev *dev; struct adapter *sc; struct port_info *pi; struct ifnet *ifp; CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, port, props); dev = to_c4iw_dev(ibdev); sc = dev->rdev.adap; if (port > sc->params.nports) return (-EINVAL); pi = sc->port[port - 1]; ifp = pi->vi[0].ifp; memset(props, 0, sizeof(struct ib_port_attr)); props->max_mtu = IB_MTU_4096; if (ifp->if_mtu >= 4096) props->active_mtu = IB_MTU_4096; else if (ifp->if_mtu >= 2048) props->active_mtu = IB_MTU_2048; else if (ifp->if_mtu >= 1024) props->active_mtu = IB_MTU_1024; else if (ifp->if_mtu >= 512) props->active_mtu = IB_MTU_512; else props->active_mtu = IB_MTU_256; props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_REINIT_SUP | IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; props->gid_tbl_len = 1; props->pkey_tbl_len = 1; props->active_width = 2; props->active_speed = 2; props->max_msg_sz = -1; return 0; } static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr attr; int err; immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; err = ib_query_port(ibdev, port_num, &attr); if (err) return err; immutable->pkey_tbl_len = attr.pkey_tbl_len; immutable->gid_tbl_len = attr.gid_tbl_len; return 0; } /* * Returns -errno on error. */ int c4iw_register_device(struct c4iw_dev *dev) { struct adapter *sc = dev->rdev.adap; struct ib_device *ibdev = &dev->ibdev; struct iw_cm_verbs *iwcm; int ret; CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); BUG_ON(!sc->port[0]); ret = linux_pci_attach_device(sc->dev, NULL, NULL, &dev->pdev); if (ret) return (ret); strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); ibdev->owner = THIS_MODULE; dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; if (fastreg_support) dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; ibdev->local_dma_lkey = 0; ibdev->uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | (1ull << IB_USER_VERBS_CMD_REG_MR) | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_POST_SEND) | (1ull << IB_USER_VERBS_CMD_POST_RECV); ibdev->node_type = RDMA_NODE_RNIC; strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); ibdev->phys_port_cnt = sc->params.nports; ibdev->num_comp_vectors = 1; ibdev->dma_device = &dev->pdev.dev; ibdev->query_device = c4iw_query_device; ibdev->query_port = c4iw_query_port; ibdev->modify_port = c4iw_modify_port; ibdev->query_pkey = c4iw_query_pkey; ibdev->query_gid = c4iw_query_gid; ibdev->alloc_ucontext = c4iw_alloc_ucontext; ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; ibdev->mmap = c4iw_mmap; ibdev->alloc_pd = c4iw_allocate_pd; ibdev->dealloc_pd = c4iw_deallocate_pd; ibdev->create_ah = c4iw_ah_create; ibdev->destroy_ah = c4iw_ah_destroy; ibdev->create_qp = c4iw_create_qp; ibdev->modify_qp = c4iw_ib_modify_qp; ibdev->query_qp = c4iw_ib_query_qp; ibdev->destroy_qp = c4iw_destroy_qp; ibdev->create_cq = c4iw_create_cq; ibdev->destroy_cq = c4iw_destroy_cq; ibdev->resize_cq = c4iw_resize_cq; ibdev->poll_cq = c4iw_poll_cq; ibdev->get_dma_mr = c4iw_get_dma_mr; ibdev->reg_user_mr = c4iw_reg_user_mr; ibdev->dereg_mr = c4iw_dereg_mr; ibdev->alloc_mw = c4iw_alloc_mw; ibdev->dealloc_mw = c4iw_dealloc_mw; ibdev->alloc_mr = c4iw_alloc_mr; ibdev->map_mr_sg = c4iw_map_mr_sg; ibdev->attach_mcast = c4iw_multicast_attach; ibdev->detach_mcast = c4iw_multicast_detach; ibdev->process_mad = c4iw_process_mad; ibdev->req_notify_cq = c4iw_arm_cq; ibdev->post_send = c4iw_post_send; ibdev->post_recv = c4iw_post_receive; ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; ibdev->get_port_immutable = c4iw_port_immutable; iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); if (iwcm == NULL) return (-ENOMEM); iwcm->connect = c4iw_connect; iwcm->accept = c4iw_accept_cr; iwcm->reject = c4iw_reject_cr; iwcm->create_listen = c4iw_create_listen; iwcm->destroy_listen = c4iw_destroy_listen; iwcm->add_ref = c4iw_qp_add_ref; iwcm->rem_ref = c4iw_qp_rem_ref; iwcm->get_qp = c4iw_get_qp; ibdev->iwcm = iwcm; ret = ib_register_device(&dev->ibdev, NULL); if (ret) { kfree(iwcm); linux_pci_detach_device(&dev->pdev); } return (ret); } void c4iw_unregister_device(struct c4iw_dev *dev) { CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, dev->rdev.adap); ib_unregister_device(&dev->ibdev); kfree(dev->ibdev.iwcm); linux_pci_detach_device(&dev->pdev); return; } #endif