| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Selvin Xavier | 6392 | 80.45% | 15 | 44.12% |
| Devesh Sharma | 730 | 9.19% | 4 | 11.76% |
| Kalesh Purayil | 224 | 2.82% | 1 | 2.94% |
| Kamal Heib | 221 | 2.78% | 1 | 2.94% |
| Somnath Kotur | 208 | 2.62% | 7 | 20.59% |
| Parav Pandit | 156 | 1.96% | 1 | 2.94% |
| Matan Barak | 6 | 0.08% | 1 | 2.94% |
| Linus Torvalds | 3 | 0.04% | 1 | 2.94% |
| Stephen Rothwell | 2 | 0.03% | 1 | 2.94% |
| Jason Gunthorpe | 2 | 0.03% | 1 | 2.94% |
| Jonathan Toppins | 1 | 0.01% | 1 | 2.94% |
| Total | 7945 | 34 |
/* * Broadcom NetXtreme-E RoCE driver. * * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term * Broadcom refers to Broadcom Limited and/or its subsidiaries. * * 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 * BSD license below: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Description: Main component of the bnxt_re driver */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/ethtool.h> #include <linux/mutex.h> #include <linux/list.h> #include <linux/rculist.h> #include <linux/spinlock.h> #include <linux/pci.h> #include <net/dcbnl.h> #include <net/ipv6.h> #include <net/addrconf.h> #include <linux/if_ether.h> #include <rdma/ib_verbs.h> #include <rdma/ib_user_verbs.h> #include <rdma/ib_umem.h> #include <rdma/ib_addr.h> #include "bnxt_ulp.h" #include "roce_hsi.h" #include "qplib_res.h" #include "qplib_sp.h" #include "qplib_fp.h" #include "qplib_rcfw.h" #include "bnxt_re.h" #include "ib_verbs.h" #include <rdma/bnxt_re-abi.h> #include "bnxt.h" #include "hw_counters.h" static char version[] = BNXT_RE_DESC "\n"; MODULE_AUTHOR("Eddie Wai <eddie.wai@broadcom.com>"); MODULE_DESCRIPTION(BNXT_RE_DESC " Driver"); MODULE_LICENSE("Dual BSD/GPL"); /* globals */ static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list); /* Mutex to protect the list of bnxt_re devices added */ static DEFINE_MUTEX(bnxt_re_dev_lock); static struct workqueue_struct *bnxt_re_wq; static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev); /* SR-IOV helper functions */ static void bnxt_re_get_sriov_func_type(struct bnxt_re_dev *rdev) { struct bnxt *bp; bp = netdev_priv(rdev->en_dev->net); if (BNXT_VF(bp)) rdev->is_virtfn = 1; } /* Set the maximum number of each resource that the driver actually wants * to allocate. This may be up to the maximum number the firmware has * reserved for the function. The driver may choose to allocate fewer * resources than the firmware maximum. */ static void bnxt_re_set_resource_limits(struct bnxt_re_dev *rdev) { u32 vf_qps = 0, vf_srqs = 0, vf_cqs = 0, vf_mrws = 0, vf_gids = 0; u32 i; u32 vf_pct; u32 num_vfs; struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; rdev->qplib_ctx.qpc_count = min_t(u32, BNXT_RE_MAX_QPC_COUNT, dev_attr->max_qp); rdev->qplib_ctx.mrw_count = BNXT_RE_MAX_MRW_COUNT_256K; /* Use max_mr from fw since max_mrw does not get set */ rdev->qplib_ctx.mrw_count = min_t(u32, rdev->qplib_ctx.mrw_count, dev_attr->max_mr); rdev->qplib_ctx.srqc_count = min_t(u32, BNXT_RE_MAX_SRQC_COUNT, dev_attr->max_srq); rdev->qplib_ctx.cq_count = min_t(u32, BNXT_RE_MAX_CQ_COUNT, dev_attr->max_cq); for (i = 0; i < MAX_TQM_ALLOC_REQ; i++) rdev->qplib_ctx.tqm_count[i] = rdev->dev_attr.tqm_alloc_reqs[i]; if (rdev->num_vfs) { /* * Reserve a set of resources for the PF. Divide the remaining * resources among the VFs */ vf_pct = 100 - BNXT_RE_PCT_RSVD_FOR_PF; num_vfs = 100 * rdev->num_vfs; vf_qps = (rdev->qplib_ctx.qpc_count * vf_pct) / num_vfs; vf_srqs = (rdev->qplib_ctx.srqc_count * vf_pct) / num_vfs; vf_cqs = (rdev->qplib_ctx.cq_count * vf_pct) / num_vfs; /* * The driver allows many more MRs than other resources. If the * firmware does also, then reserve a fixed amount for the PF * and divide the rest among VFs. VFs may use many MRs for NFS * mounts, ISER, NVME applications, etc. If the firmware * severely restricts the number of MRs, then let PF have * half and divide the rest among VFs, as for the other * resource types. */ if (rdev->qplib_ctx.mrw_count < BNXT_RE_MAX_MRW_COUNT_64K) vf_mrws = rdev->qplib_ctx.mrw_count * vf_pct / num_vfs; else vf_mrws = (rdev->qplib_ctx.mrw_count - BNXT_RE_RESVD_MR_FOR_PF) / rdev->num_vfs; vf_gids = BNXT_RE_MAX_GID_PER_VF; } rdev->qplib_ctx.vf_res.max_mrw_per_vf = vf_mrws; rdev->qplib_ctx.vf_res.max_gid_per_vf = vf_gids; rdev->qplib_ctx.vf_res.max_qp_per_vf = vf_qps; rdev->qplib_ctx.vf_res.max_srq_per_vf = vf_srqs; rdev->qplib_ctx.vf_res.max_cq_per_vf = vf_cqs; } /* for handling bnxt_en callbacks later */ static void bnxt_re_stop(void *p) { } static void bnxt_re_start(void *p) { } static void bnxt_re_sriov_config(void *p, int num_vfs) { struct bnxt_re_dev *rdev = p; if (!rdev) return; rdev->num_vfs = num_vfs; bnxt_re_set_resource_limits(rdev); bnxt_qplib_set_func_resources(&rdev->qplib_res, &rdev->rcfw, &rdev->qplib_ctx); } static void bnxt_re_shutdown(void *p) { struct bnxt_re_dev *rdev = p; if (!rdev) return; bnxt_re_ib_unreg(rdev); } static void bnxt_re_stop_irq(void *handle) { struct bnxt_re_dev *rdev = (struct bnxt_re_dev *)handle; struct bnxt_qplib_rcfw *rcfw = &rdev->rcfw; struct bnxt_qplib_nq *nq; int indx; for (indx = BNXT_RE_NQ_IDX; indx < rdev->num_msix; indx++) { nq = &rdev->nq[indx - 1]; bnxt_qplib_nq_stop_irq(nq, false); } bnxt_qplib_rcfw_stop_irq(rcfw, false); } static void bnxt_re_start_irq(void *handle, struct bnxt_msix_entry *ent) { struct bnxt_re_dev *rdev = (struct bnxt_re_dev *)handle; struct bnxt_msix_entry *msix_ent = rdev->msix_entries; struct bnxt_qplib_rcfw *rcfw = &rdev->rcfw; struct bnxt_qplib_nq *nq; int indx, rc; if (!ent) { /* Not setting the f/w timeout bit in rcfw. * During the driver unload the first command * to f/w will timeout and that will set the * timeout bit. */ dev_err(rdev_to_dev(rdev), "Failed to re-start IRQs\n"); return; } /* Vectors may change after restart, so update with new vectors * in device sctructure. */ for (indx = 0; indx < rdev->num_msix; indx++) rdev->msix_entries[indx].vector = ent[indx].vector; bnxt_qplib_rcfw_start_irq(rcfw, msix_ent[BNXT_RE_AEQ_IDX].vector, false); for (indx = BNXT_RE_NQ_IDX ; indx < rdev->num_msix; indx++) { nq = &rdev->nq[indx - 1]; rc = bnxt_qplib_nq_start_irq(nq, indx - 1, msix_ent[indx].vector, false); if (rc) dev_warn(rdev_to_dev(rdev), "Failed to reinit NQ index %d\n", indx - 1); } } static struct bnxt_ulp_ops bnxt_re_ulp_ops = { .ulp_async_notifier = NULL, .ulp_stop = bnxt_re_stop, .ulp_start = bnxt_re_start, .ulp_sriov_config = bnxt_re_sriov_config, .ulp_shutdown = bnxt_re_shutdown, .ulp_irq_stop = bnxt_re_stop_irq, .ulp_irq_restart = bnxt_re_start_irq }; /* RoCE -> Net driver */ /* Driver registration routines used to let the networking driver (bnxt_en) * to know that the RoCE driver is now installed */ static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev) { struct bnxt_en_dev *en_dev; int rc; if (!rdev) return -EINVAL; en_dev = rdev->en_dev; rc = en_dev->en_ops->bnxt_unregister_device(rdev->en_dev, BNXT_ROCE_ULP); return rc; } static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev) { struct bnxt_en_dev *en_dev; int rc = 0; if (!rdev) return -EINVAL; en_dev = rdev->en_dev; rc = en_dev->en_ops->bnxt_register_device(en_dev, BNXT_ROCE_ULP, &bnxt_re_ulp_ops, rdev); return rc; } static int bnxt_re_free_msix(struct bnxt_re_dev *rdev) { struct bnxt_en_dev *en_dev; int rc; if (!rdev) return -EINVAL; en_dev = rdev->en_dev; rc = en_dev->en_ops->bnxt_free_msix(rdev->en_dev, BNXT_ROCE_ULP); return rc; } static int bnxt_re_request_msix(struct bnxt_re_dev *rdev) { int rc = 0, num_msix_want = BNXT_RE_MAX_MSIX, num_msix_got; struct bnxt_en_dev *en_dev; if (!rdev) return -EINVAL; en_dev = rdev->en_dev; num_msix_want = min_t(u32, BNXT_RE_MAX_MSIX, num_online_cpus()); num_msix_got = en_dev->en_ops->bnxt_request_msix(en_dev, BNXT_ROCE_ULP, rdev->msix_entries, num_msix_want); if (num_msix_got < BNXT_RE_MIN_MSIX) { rc = -EINVAL; goto done; } if (num_msix_got != num_msix_want) { dev_warn(rdev_to_dev(rdev), "Requested %d MSI-X vectors, got %d\n", num_msix_want, num_msix_got); } rdev->num_msix = num_msix_got; done: return rc; } static void bnxt_re_init_hwrm_hdr(struct bnxt_re_dev *rdev, struct input *hdr, u16 opcd, u16 crid, u16 trid) { hdr->req_type = cpu_to_le16(opcd); hdr->cmpl_ring = cpu_to_le16(crid); hdr->target_id = cpu_to_le16(trid); } static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg, int msg_len, void *resp, int resp_max_len, int timeout) { fw_msg->msg = msg; fw_msg->msg_len = msg_len; fw_msg->resp = resp; fw_msg->resp_max_len = resp_max_len; fw_msg->timeout = timeout; } static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id) { struct bnxt_en_dev *en_dev = rdev->en_dev; struct hwrm_ring_free_input req = {0}; struct hwrm_ring_free_output resp; struct bnxt_fw_msg fw_msg; int rc = -EINVAL; if (!en_dev) return rc; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1); req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL; req.ring_id = cpu_to_le16(fw_ring_id); bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (rc) dev_err(rdev_to_dev(rdev), "Failed to free HW ring:%d :%#x", req.ring_id, rc); return rc; } static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr, int pages, int type, u32 ring_mask, u32 map_index, u16 *fw_ring_id) { struct bnxt_en_dev *en_dev = rdev->en_dev; struct hwrm_ring_alloc_input req = {0}; struct hwrm_ring_alloc_output resp; struct bnxt_fw_msg fw_msg; int rc = -EINVAL; if (!en_dev) return rc; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1); req.enables = 0; req.page_tbl_addr = cpu_to_le64(dma_arr[0]); if (pages > 1) { /* Page size is in log2 units */ req.page_size = BNXT_PAGE_SHIFT; req.page_tbl_depth = 1; } req.fbo = 0; /* Association of ring index with doorbell index and MSIX number */ req.logical_id = cpu_to_le16(map_index); req.length = cpu_to_le32(ring_mask + 1); req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL; req.int_mode = RING_ALLOC_REQ_INT_MODE_MSIX; bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (!rc) *fw_ring_id = le16_to_cpu(resp.ring_id); return rc; } static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev, u32 fw_stats_ctx_id) { struct bnxt_en_dev *en_dev = rdev->en_dev; struct hwrm_stat_ctx_free_input req = {0}; struct bnxt_fw_msg fw_msg; int rc = -EINVAL; if (!en_dev) return rc; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1); req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id); bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&req, sizeof(req), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (rc) dev_err(rdev_to_dev(rdev), "Failed to free HW stats context %#x", rc); return rc; } static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev, dma_addr_t dma_map, u32 *fw_stats_ctx_id) { struct hwrm_stat_ctx_alloc_output resp = {0}; struct hwrm_stat_ctx_alloc_input req = {0}; struct bnxt_en_dev *en_dev = rdev->en_dev; struct bnxt_fw_msg fw_msg; int rc = -EINVAL; *fw_stats_ctx_id = INVALID_STATS_CTX_ID; if (!en_dev) return rc; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1); req.update_period_ms = cpu_to_le32(1000); req.stats_dma_addr = cpu_to_le64(dma_map); req.stat_ctx_flags = STAT_CTX_ALLOC_REQ_STAT_CTX_FLAGS_ROCE; bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (!rc) *fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id); return rc; } /* Device */ static bool is_bnxt_re_dev(struct net_device *netdev) { struct ethtool_drvinfo drvinfo; if (netdev->ethtool_ops && netdev->ethtool_ops->get_drvinfo) { memset(&drvinfo, 0, sizeof(drvinfo)); netdev->ethtool_ops->get_drvinfo(netdev, &drvinfo); if (strcmp(drvinfo.driver, "bnxt_en")) return false; return true; } return false; } static struct bnxt_re_dev *bnxt_re_from_netdev(struct net_device *netdev) { struct bnxt_re_dev *rdev; rcu_read_lock(); list_for_each_entry_rcu(rdev, &bnxt_re_dev_list, list) { if (rdev->netdev == netdev) { rcu_read_unlock(); return rdev; } } rcu_read_unlock(); return NULL; } static void bnxt_re_dev_unprobe(struct net_device *netdev, struct bnxt_en_dev *en_dev) { dev_put(netdev); module_put(en_dev->pdev->driver->driver.owner); } static struct bnxt_en_dev *bnxt_re_dev_probe(struct net_device *netdev) { struct bnxt *bp = netdev_priv(netdev); struct bnxt_en_dev *en_dev; struct pci_dev *pdev; /* Call bnxt_en's RoCE probe via indirect API */ if (!bp->ulp_probe) return ERR_PTR(-EINVAL); en_dev = bp->ulp_probe(netdev); if (IS_ERR(en_dev)) return en_dev; pdev = en_dev->pdev; if (!pdev) return ERR_PTR(-EINVAL); if (!(en_dev->flags & BNXT_EN_FLAG_ROCE_CAP)) { dev_info(&pdev->dev, "%s: probe error: RoCE is not supported on this device", ROCE_DRV_MODULE_NAME); return ERR_PTR(-ENODEV); } /* Bump net device reference count */ if (!try_module_get(pdev->driver->driver.owner)) return ERR_PTR(-ENODEV); dev_hold(netdev); return en_dev; } static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr, char *buf) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev); return scnprintf(buf, PAGE_SIZE, "0x%x\n", rdev->en_dev->pdev->vendor); } static DEVICE_ATTR_RO(hw_rev); static ssize_t hca_type_show(struct device *device, struct device_attribute *attr, char *buf) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(device, ibdev.dev); return scnprintf(buf, PAGE_SIZE, "%s\n", rdev->ibdev.node_desc); } static DEVICE_ATTR_RO(hca_type); static struct attribute *bnxt_re_attributes[] = { &dev_attr_hw_rev.attr, &dev_attr_hca_type.attr, NULL }; static const struct attribute_group bnxt_re_dev_attr_group = { .attrs = bnxt_re_attributes, }; static void bnxt_re_unregister_ib(struct bnxt_re_dev *rdev) { ib_unregister_device(&rdev->ibdev); } static const struct ib_device_ops bnxt_re_dev_ops = { .add_gid = bnxt_re_add_gid, .alloc_hw_stats = bnxt_re_ib_alloc_hw_stats, .alloc_mr = bnxt_re_alloc_mr, .alloc_pd = bnxt_re_alloc_pd, .alloc_ucontext = bnxt_re_alloc_ucontext, .create_ah = bnxt_re_create_ah, .create_cq = bnxt_re_create_cq, .create_qp = bnxt_re_create_qp, .create_srq = bnxt_re_create_srq, .dealloc_pd = bnxt_re_dealloc_pd, .dealloc_ucontext = bnxt_re_dealloc_ucontext, .del_gid = bnxt_re_del_gid, .dereg_mr = bnxt_re_dereg_mr, .destroy_ah = bnxt_re_destroy_ah, .destroy_cq = bnxt_re_destroy_cq, .destroy_qp = bnxt_re_destroy_qp, .destroy_srq = bnxt_re_destroy_srq, .get_dev_fw_str = bnxt_re_query_fw_str, .get_dma_mr = bnxt_re_get_dma_mr, .get_hw_stats = bnxt_re_ib_get_hw_stats, .get_link_layer = bnxt_re_get_link_layer, .get_netdev = bnxt_re_get_netdev, .get_port_immutable = bnxt_re_get_port_immutable, .map_mr_sg = bnxt_re_map_mr_sg, .mmap = bnxt_re_mmap, .modify_ah = bnxt_re_modify_ah, .modify_device = bnxt_re_modify_device, .modify_qp = bnxt_re_modify_qp, .modify_srq = bnxt_re_modify_srq, .poll_cq = bnxt_re_poll_cq, .post_recv = bnxt_re_post_recv, .post_send = bnxt_re_post_send, .post_srq_recv = bnxt_re_post_srq_recv, .query_ah = bnxt_re_query_ah, .query_device = bnxt_re_query_device, .query_pkey = bnxt_re_query_pkey, .query_port = bnxt_re_query_port, .query_qp = bnxt_re_query_qp, .query_srq = bnxt_re_query_srq, .reg_user_mr = bnxt_re_reg_user_mr, .req_notify_cq = bnxt_re_req_notify_cq, }; static int bnxt_re_register_ib(struct bnxt_re_dev *rdev) { struct ib_device *ibdev = &rdev->ibdev; /* ib device init */ ibdev->owner = THIS_MODULE; ibdev->node_type = RDMA_NODE_IB_CA; strlcpy(ibdev->node_desc, BNXT_RE_DESC " HCA", strlen(BNXT_RE_DESC) + 5); ibdev->phys_port_cnt = 1; bnxt_qplib_get_guid(rdev->netdev->dev_addr, (u8 *)&ibdev->node_guid); ibdev->num_comp_vectors = 1; ibdev->dev.parent = &rdev->en_dev->pdev->dev; ibdev->local_dma_lkey = BNXT_QPLIB_RSVD_LKEY; /* User space */ ibdev->uverbs_abi_ver = BNXT_RE_ABI_VERSION; 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_REREG_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_RESIZE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_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_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | (1ull << IB_USER_VERBS_CMD_MODIFY_AH) | (1ull << IB_USER_VERBS_CMD_QUERY_AH) | (1ull << IB_USER_VERBS_CMD_DESTROY_AH); /* POLL_CQ and REQ_NOTIFY_CQ is directly handled in libbnxt_re */ rdma_set_device_sysfs_group(ibdev, &bnxt_re_dev_attr_group); ibdev->driver_id = RDMA_DRIVER_BNXT_RE; ib_set_device_ops(ibdev, &bnxt_re_dev_ops); return ib_register_device(ibdev, "bnxt_re%d", NULL); } static void bnxt_re_dev_remove(struct bnxt_re_dev *rdev) { dev_put(rdev->netdev); rdev->netdev = NULL; mutex_lock(&bnxt_re_dev_lock); list_del_rcu(&rdev->list); mutex_unlock(&bnxt_re_dev_lock); synchronize_rcu(); ib_dealloc_device(&rdev->ibdev); /* rdev is gone */ } static struct bnxt_re_dev *bnxt_re_dev_add(struct net_device *netdev, struct bnxt_en_dev *en_dev) { struct bnxt_re_dev *rdev; /* Allocate bnxt_re_dev instance here */ rdev = (struct bnxt_re_dev *)ib_alloc_device(sizeof(*rdev)); if (!rdev) { dev_err(NULL, "%s: bnxt_re_dev allocation failure!", ROCE_DRV_MODULE_NAME); return NULL; } /* Default values */ rdev->netdev = netdev; dev_hold(rdev->netdev); rdev->en_dev = en_dev; rdev->id = rdev->en_dev->pdev->devfn; INIT_LIST_HEAD(&rdev->qp_list); mutex_init(&rdev->qp_lock); atomic_set(&rdev->qp_count, 0); atomic_set(&rdev->cq_count, 0); atomic_set(&rdev->srq_count, 0); atomic_set(&rdev->mr_count, 0); atomic_set(&rdev->mw_count, 0); rdev->cosq[0] = 0xFFFF; rdev->cosq[1] = 0xFFFF; mutex_lock(&bnxt_re_dev_lock); list_add_tail_rcu(&rdev->list, &bnxt_re_dev_list); mutex_unlock(&bnxt_re_dev_lock); return rdev; } static int bnxt_re_handle_unaffi_async_event(struct creq_func_event *unaffi_async) { switch (unaffi_async->event) { case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR: break; case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR: break; case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR: break; case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR: break; case CREQ_FUNC_EVENT_EVENT_CQ_ERROR: break; case CREQ_FUNC_EVENT_EVENT_TQM_ERROR: break; case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR: break; case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR: break; case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR: break; case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR: break; case CREQ_FUNC_EVENT_EVENT_TIM_ERROR: break; default: return -EINVAL; } return 0; } static int bnxt_re_handle_qp_async_event(struct creq_qp_event *qp_event, struct bnxt_re_qp *qp) { struct ib_event event; unsigned int flags; if (qp->qplib_qp.state == CMDQ_MODIFY_QP_NEW_STATE_ERR) { flags = bnxt_re_lock_cqs(qp); bnxt_qplib_add_flush_qp(&qp->qplib_qp); bnxt_re_unlock_cqs(qp, flags); } memset(&event, 0, sizeof(event)); if (qp->qplib_qp.srq) { event.device = &qp->rdev->ibdev; event.element.qp = &qp->ib_qp; event.event = IB_EVENT_QP_LAST_WQE_REACHED; } if (event.device && qp->ib_qp.event_handler) qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context); return 0; } static int bnxt_re_handle_affi_async_event(struct creq_qp_event *affi_async, void *obj) { int rc = 0; u8 event; if (!obj) return rc; /* QP was already dead, still return success */ event = affi_async->event; if (event == CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION) { struct bnxt_qplib_qp *lib_qp = obj; struct bnxt_re_qp *qp = container_of(lib_qp, struct bnxt_re_qp, qplib_qp); rc = bnxt_re_handle_qp_async_event(affi_async, qp); } return rc; } static int bnxt_re_aeq_handler(struct bnxt_qplib_rcfw *rcfw, void *aeqe, void *obj) { struct creq_qp_event *affi_async; struct creq_func_event *unaffi_async; u8 type; int rc; type = ((struct creq_base *)aeqe)->type; if (type == CREQ_BASE_TYPE_FUNC_EVENT) { unaffi_async = aeqe; rc = bnxt_re_handle_unaffi_async_event(unaffi_async); } else { affi_async = aeqe; rc = bnxt_re_handle_affi_async_event(affi_async, obj); } return rc; } static int bnxt_re_srqn_handler(struct bnxt_qplib_nq *nq, struct bnxt_qplib_srq *handle, u8 event) { struct bnxt_re_srq *srq = container_of(handle, struct bnxt_re_srq, qplib_srq); struct ib_event ib_event; int rc = 0; if (!srq) { dev_err(NULL, "%s: SRQ is NULL, SRQN not handled", ROCE_DRV_MODULE_NAME); rc = -EINVAL; goto done; } ib_event.device = &srq->rdev->ibdev; ib_event.element.srq = &srq->ib_srq; if (event == NQ_SRQ_EVENT_EVENT_SRQ_THRESHOLD_EVENT) ib_event.event = IB_EVENT_SRQ_LIMIT_REACHED; else ib_event.event = IB_EVENT_SRQ_ERR; if (srq->ib_srq.event_handler) { /* Lock event_handler? */ (*srq->ib_srq.event_handler)(&ib_event, srq->ib_srq.srq_context); } done: return rc; } static int bnxt_re_cqn_handler(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *handle) { struct bnxt_re_cq *cq = container_of(handle, struct bnxt_re_cq, qplib_cq); if (!cq) { dev_err(NULL, "%s: CQ is NULL, CQN not handled", ROCE_DRV_MODULE_NAME); return -EINVAL; } if (cq->ib_cq.comp_handler) { /* Lock comp_handler? */ (*cq->ib_cq.comp_handler)(&cq->ib_cq, cq->ib_cq.cq_context); } return 0; } static void bnxt_re_cleanup_res(struct bnxt_re_dev *rdev) { int i; for (i = 1; i < rdev->num_msix; i++) bnxt_qplib_disable_nq(&rdev->nq[i - 1]); if (rdev->qplib_res.rcfw) bnxt_qplib_cleanup_res(&rdev->qplib_res); } static int bnxt_re_init_res(struct bnxt_re_dev *rdev) { int rc = 0, i; int num_vec_enabled = 0; bnxt_qplib_init_res(&rdev->qplib_res); for (i = 1; i < rdev->num_msix ; i++) { rc = bnxt_qplib_enable_nq(rdev->en_dev->pdev, &rdev->nq[i - 1], i - 1, rdev->msix_entries[i].vector, rdev->msix_entries[i].db_offset, &bnxt_re_cqn_handler, &bnxt_re_srqn_handler); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to enable NQ with rc = 0x%x", rc); goto fail; } num_vec_enabled++; } return 0; fail: for (i = num_vec_enabled; i >= 0; i--) bnxt_qplib_disable_nq(&rdev->nq[i]); return rc; } static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev) { int i; for (i = 0; i < rdev->num_msix - 1; i++) { bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id); bnxt_qplib_free_nq(&rdev->nq[i]); } } static void bnxt_re_free_res(struct bnxt_re_dev *rdev) { bnxt_re_free_nq_res(rdev); if (rdev->qplib_res.dpi_tbl.max) { bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &rdev->qplib_res.dpi_tbl, &rdev->dpi_privileged); } if (rdev->qplib_res.rcfw) { bnxt_qplib_free_res(&rdev->qplib_res); rdev->qplib_res.rcfw = NULL; } } static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev) { int rc = 0, i; int num_vec_created = 0; /* Configure and allocate resources for qplib */ rdev->qplib_res.rcfw = &rdev->rcfw; rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr, rdev->is_virtfn); if (rc) goto fail; rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev, rdev->netdev, &rdev->dev_attr); if (rc) goto fail; rc = bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl, &rdev->dpi_privileged, rdev); if (rc) goto dealloc_res; for (i = 0; i < rdev->num_msix - 1; i++) { rdev->nq[i].hwq.max_elements = BNXT_RE_MAX_CQ_COUNT + BNXT_RE_MAX_SRQC_COUNT + 2; rc = bnxt_qplib_alloc_nq(rdev->en_dev->pdev, &rdev->nq[i]); if (rc) { dev_err(rdev_to_dev(rdev), "Alloc Failed NQ%d rc:%#x", i, rc); goto free_nq; } rc = bnxt_re_net_ring_alloc (rdev, rdev->nq[i].hwq.pbl[PBL_LVL_0].pg_map_arr, rdev->nq[i].hwq.pbl[rdev->nq[i].hwq.level].pg_count, HWRM_RING_ALLOC_CMPL, BNXT_QPLIB_NQE_MAX_CNT - 1, rdev->msix_entries[i + 1].ring_idx, &rdev->nq[i].ring_id); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to allocate NQ fw id with rc = 0x%x", rc); bnxt_qplib_free_nq(&rdev->nq[i]); goto free_nq; } num_vec_created++; } return 0; free_nq: for (i = num_vec_created; i >= 0; i--) { bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id); bnxt_qplib_free_nq(&rdev->nq[i]); } bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &rdev->qplib_res.dpi_tbl, &rdev->dpi_privileged); dealloc_res: bnxt_qplib_free_res(&rdev->qplib_res); fail: rdev->qplib_res.rcfw = NULL; return rc; } static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp, u8 port_num, enum ib_event_type event) { struct ib_event ib_event; ib_event.device = ibdev; if (qp) { ib_event.element.qp = qp; ib_event.event = event; if (qp->event_handler) qp->event_handler(&ib_event, qp->qp_context); } else { ib_event.element.port_num = port_num; ib_event.event = event; ib_dispatch_event(&ib_event); } } #define HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN 0x02 static int bnxt_re_query_hwrm_pri2cos(struct bnxt_re_dev *rdev, u8 dir, u64 *cid_map) { struct hwrm_queue_pri2cos_qcfg_input req = {0}; struct bnxt *bp = netdev_priv(rdev->netdev); struct hwrm_queue_pri2cos_qcfg_output resp; struct bnxt_en_dev *en_dev = rdev->en_dev; struct bnxt_fw_msg fw_msg; u32 flags = 0; u8 *qcfgmap, *tmp_map; int rc = 0, i; if (!cid_map) return -EINVAL; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_QUEUE_PRI2COS_QCFG, -1, -1); flags |= (dir & 0x01); flags |= HWRM_QUEUE_PRI2COS_QCFG_INPUT_FLAGS_IVLAN; req.flags = cpu_to_le32(flags); req.port_id = bp->pf.port_id; bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (rc) return rc; if (resp.queue_cfg_info) { dev_warn(rdev_to_dev(rdev), "Asymmetric cos queue configuration detected"); dev_warn(rdev_to_dev(rdev), " on device, QoS may not be fully functional\n"); } qcfgmap = &resp.pri0_cos_queue_id; tmp_map = (u8 *)cid_map; for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) tmp_map[i] = qcfgmap[i]; return rc; } static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp) { return (qp->ib_qp.qp_type == IB_QPT_GSI) || (qp == rdev->qp1_sqp); } static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev) { int mask = IB_QP_STATE; struct ib_qp_attr qp_attr; struct bnxt_re_qp *qp; qp_attr.qp_state = IB_QPS_ERR; mutex_lock(&rdev->qp_lock); list_for_each_entry(qp, &rdev->qp_list, list) { /* Modify the state of all QPs except QP1/Shadow QP */ if (!bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) { if (qp->qplib_qp.state != CMDQ_MODIFY_QP_NEW_STATE_RESET && qp->qplib_qp.state != CMDQ_MODIFY_QP_NEW_STATE_ERR) { bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp, 1, IB_EVENT_QP_FATAL); bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask, NULL); } } } mutex_unlock(&rdev->qp_lock); } static int bnxt_re_update_gid(struct bnxt_re_dev *rdev) { struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; struct bnxt_qplib_gid gid; u16 gid_idx, index; int rc = 0; if (!test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) return 0; if (!sgid_tbl) { dev_err(rdev_to_dev(rdev), "QPLIB: SGID table not allocated"); return -EINVAL; } for (index = 0; index < sgid_tbl->active; index++) { gid_idx = sgid_tbl->hw_id[index]; if (!memcmp(&sgid_tbl->tbl[index], &bnxt_qplib_gid_zero, sizeof(bnxt_qplib_gid_zero))) continue; /* need to modify the VLAN enable setting of non VLAN GID only * as setting is done for VLAN GID while adding GID */ if (sgid_tbl->vlan[index]) continue; memcpy(&gid, &sgid_tbl->tbl[index], sizeof(gid)); rc = bnxt_qplib_update_sgid(sgid_tbl, &gid, gid_idx, rdev->qplib_res.netdev->dev_addr); } return rc; } static u32 bnxt_re_get_priority_mask(struct bnxt_re_dev *rdev) { u32 prio_map = 0, tmp_map = 0; struct net_device *netdev; struct dcb_app app; netdev = rdev->netdev; memset(&app, 0, sizeof(app)); app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; app.protocol = ETH_P_IBOE; tmp_map = dcb_ieee_getapp_mask(netdev, &app); prio_map = tmp_map; app.selector = IEEE_8021QAZ_APP_SEL_DGRAM; app.protocol = ROCE_V2_UDP_DPORT; tmp_map = dcb_ieee_getapp_mask(netdev, &app); prio_map |= tmp_map; return prio_map; } static void bnxt_re_parse_cid_map(u8 prio_map, u8 *cid_map, u16 *cosq) { u16 prio; u8 id; for (prio = 0, id = 0; prio < 8; prio++) { if (prio_map & (1 << prio)) { cosq[id] = cid_map[prio]; id++; if (id == 2) /* Max 2 tcs supported */ break; } } } static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev) { u8 prio_map = 0; u64 cid_map; int rc; /* Get priority for roce */ prio_map = bnxt_re_get_priority_mask(rdev); if (prio_map == rdev->cur_prio_map) return 0; rdev->cur_prio_map = prio_map; /* Get cosq id for this priority */ rc = bnxt_re_query_hwrm_pri2cos(rdev, 0, &cid_map); if (rc) { dev_warn(rdev_to_dev(rdev), "no cos for p_mask %x\n", prio_map); return rc; } /* Parse CoS IDs for app priority */ bnxt_re_parse_cid_map(prio_map, (u8 *)&cid_map, rdev->cosq); /* Config BONO. */ rc = bnxt_qplib_map_tc2cos(&rdev->qplib_res, rdev->cosq); if (rc) { dev_warn(rdev_to_dev(rdev), "no tc for cos{%x, %x}\n", rdev->cosq[0], rdev->cosq[1]); return rc; } /* Actual priorities are not programmed as they are already * done by L2 driver; just enable or disable priority vlan tagging */ if ((prio_map == 0 && rdev->qplib_res.prio) || (prio_map != 0 && !rdev->qplib_res.prio)) { rdev->qplib_res.prio = prio_map ? true : false; bnxt_re_update_gid(rdev); } return 0; } static void bnxt_re_query_hwrm_intf_version(struct bnxt_re_dev *rdev) { struct bnxt_en_dev *en_dev = rdev->en_dev; struct hwrm_ver_get_output resp = {0}; struct hwrm_ver_get_input req = {0}; struct bnxt_fw_msg fw_msg; int rc = 0; memset(&fw_msg, 0, sizeof(fw_msg)); bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_VER_GET, -1, -1); req.hwrm_intf_maj = HWRM_VERSION_MAJOR; req.hwrm_intf_min = HWRM_VERSION_MINOR; req.hwrm_intf_upd = HWRM_VERSION_UPDATE; bnxt_re_fill_fw_msg(&fw_msg, (void *)&req, sizeof(req), (void *)&resp, sizeof(resp), DFLT_HWRM_CMD_TIMEOUT); rc = en_dev->en_ops->bnxt_send_fw_msg(en_dev, BNXT_ROCE_ULP, &fw_msg); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to query HW version, rc = 0x%x", rc); return; } rdev->qplib_ctx.hwrm_intf_ver = (u64)resp.hwrm_intf_major << 48 | (u64)resp.hwrm_intf_minor << 32 | (u64)resp.hwrm_intf_build << 16 | resp.hwrm_intf_patch; } static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev) { int rc; if (test_and_clear_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) { /* Cleanup ib dev */ bnxt_re_unregister_ib(rdev); } if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags)) cancel_delayed_work_sync(&rdev->worker); if (test_and_clear_bit(BNXT_RE_FLAG_RESOURCES_INITIALIZED, &rdev->flags)) bnxt_re_cleanup_res(rdev); if (test_and_clear_bit(BNXT_RE_FLAG_RESOURCES_ALLOCATED, &rdev->flags)) bnxt_re_free_res(rdev); if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) { rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw); if (rc) dev_warn(rdev_to_dev(rdev), "Failed to deinitialize RCFW: %#x", rc); bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id); bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx); bnxt_qplib_disable_rcfw_channel(&rdev->rcfw); bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id); bnxt_qplib_free_rcfw_channel(&rdev->rcfw); } if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags)) { rc = bnxt_re_free_msix(rdev); if (rc) dev_warn(rdev_to_dev(rdev), "Failed to free MSI-X vectors: %#x", rc); } if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags)) { rc = bnxt_re_unregister_netdev(rdev); if (rc) dev_warn(rdev_to_dev(rdev), "Failed to unregister with netdev: %#x", rc); } } /* worker thread for polling periodic events. Now used for QoS programming*/ static void bnxt_re_worker(struct work_struct *work) { struct bnxt_re_dev *rdev = container_of(work, struct bnxt_re_dev, worker.work); bnxt_re_setup_qos(rdev); schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000)); } static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev) { int rc; bool locked; /* Acquire rtnl lock through out this function */ rtnl_lock(); locked = true; /* Registered a new RoCE device instance to netdev */ rc = bnxt_re_register_netdev(rdev); if (rc) { rtnl_unlock(); pr_err("Failed to register with netedev: %#x\n", rc); return -EINVAL; } set_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags); /* Check whether VF or PF */ bnxt_re_get_sriov_func_type(rdev); rc = bnxt_re_request_msix(rdev); if (rc) { pr_err("Failed to get MSI-X vectors: %#x\n", rc); rc = -EINVAL; goto fail; } set_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags); bnxt_re_query_hwrm_intf_version(rdev); /* Establish RCFW Communication Channel to initialize the context * memory for the function and all child VFs */ rc = bnxt_qplib_alloc_rcfw_channel(rdev->en_dev->pdev, &rdev->rcfw, &rdev->qplib_ctx, BNXT_RE_MAX_QPC_COUNT); if (rc) { pr_err("Failed to allocate RCFW Channel: %#x\n", rc); goto fail; } rc = bnxt_re_net_ring_alloc (rdev, rdev->rcfw.creq.pbl[PBL_LVL_0].pg_map_arr, rdev->rcfw.creq.pbl[rdev->rcfw.creq.level].pg_count, HWRM_RING_ALLOC_CMPL, BNXT_QPLIB_CREQE_MAX_CNT - 1, rdev->msix_entries[BNXT_RE_AEQ_IDX].ring_idx, &rdev->rcfw.creq_ring_id); if (rc) { pr_err("Failed to allocate CREQ: %#x\n", rc); goto free_rcfw; } rc = bnxt_qplib_enable_rcfw_channel (rdev->en_dev->pdev, &rdev->rcfw, rdev->msix_entries[BNXT_RE_AEQ_IDX].vector, rdev->msix_entries[BNXT_RE_AEQ_IDX].db_offset, rdev->is_virtfn, &bnxt_re_aeq_handler); if (rc) { pr_err("Failed to enable RCFW channel: %#x\n", rc); goto free_ring; } rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr, rdev->is_virtfn); if (rc) goto disable_rcfw; if (!rdev->is_virtfn) bnxt_re_set_resource_limits(rdev); rc = bnxt_qplib_alloc_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx, 0); if (rc) { pr_err("Failed to allocate QPLIB context: %#x\n", rc); goto disable_rcfw; } rc = bnxt_re_net_stats_ctx_alloc(rdev, rdev->qplib_ctx.stats.dma_map, &rdev->qplib_ctx.stats.fw_id); if (rc) { pr_err("Failed to allocate stats context: %#x\n", rc); goto free_ctx; } rc = bnxt_qplib_init_rcfw(&rdev->rcfw, &rdev->qplib_ctx, rdev->is_virtfn); if (rc) { pr_err("Failed to initialize RCFW: %#x\n", rc); goto free_sctx; } set_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags); /* Resources based on the 'new' device caps */ rc = bnxt_re_alloc_res(rdev); if (rc) { pr_err("Failed to allocate resources: %#x\n", rc); goto fail; } set_bit(BNXT_RE_FLAG_RESOURCES_ALLOCATED, &rdev->flags); rc = bnxt_re_init_res(rdev); if (rc) { pr_err("Failed to initialize resources: %#x\n", rc); goto fail; } set_bit(BNXT_RE_FLAG_RESOURCES_INITIALIZED, &rdev->flags); if (!rdev->is_virtfn) { rc = bnxt_re_setup_qos(rdev); if (rc) pr_info("RoCE priority not yet configured\n"); INIT_DELAYED_WORK(&rdev->worker, bnxt_re_worker); set_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags); schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000)); } rtnl_unlock(); locked = false; /* Register ib dev */ rc = bnxt_re_register_ib(rdev); if (rc) { pr_err("Failed to register with IB: %#x\n", rc); goto fail; } set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags); dev_info(rdev_to_dev(rdev), "Device registered successfully"); ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed, &rdev->active_width); set_bit(BNXT_RE_FLAG_ISSUE_ROCE_STATS, &rdev->flags); bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE); bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_GID_CHANGE); return 0; free_sctx: bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id); free_ctx: bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx); disable_rcfw: bnxt_qplib_disable_rcfw_channel(&rdev->rcfw); free_ring: bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id); free_rcfw: bnxt_qplib_free_rcfw_channel(&rdev->rcfw); fail: if (!locked) rtnl_lock(); bnxt_re_ib_unreg(rdev); rtnl_unlock(); return rc; } static void bnxt_re_dev_unreg(struct bnxt_re_dev *rdev) { struct bnxt_en_dev *en_dev = rdev->en_dev; struct net_device *netdev = rdev->netdev; bnxt_re_dev_remove(rdev); if (netdev) bnxt_re_dev_unprobe(netdev, en_dev); } static int bnxt_re_dev_reg(struct bnxt_re_dev **rdev, struct net_device *netdev) { struct bnxt_en_dev *en_dev; int rc = 0; if (!is_bnxt_re_dev(netdev)) return -ENODEV; en_dev = bnxt_re_dev_probe(netdev); if (IS_ERR(en_dev)) { if (en_dev != ERR_PTR(-ENODEV)) pr_err("%s: Failed to probe\n", ROCE_DRV_MODULE_NAME); rc = PTR_ERR(en_dev); goto exit; } *rdev = bnxt_re_dev_add(netdev, en_dev); if (!*rdev) { rc = -ENOMEM; bnxt_re_dev_unprobe(netdev, en_dev); goto exit; } exit: return rc; } static void bnxt_re_remove_one(struct bnxt_re_dev *rdev) { pci_dev_put(rdev->en_dev->pdev); } /* Handle all deferred netevents tasks */ static void bnxt_re_task(struct work_struct *work) { struct bnxt_re_work *re_work; struct bnxt_re_dev *rdev; int rc = 0; re_work = container_of(work, struct bnxt_re_work, work); rdev = re_work->rdev; if (re_work->event != NETDEV_REGISTER && !test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) return; switch (re_work->event) { case NETDEV_REGISTER: rc = bnxt_re_ib_reg(rdev); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to register with IB: %#x", rc); bnxt_re_remove_one(rdev); bnxt_re_dev_unreg(rdev); goto exit; } break; case NETDEV_UP: bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE); break; case NETDEV_DOWN: bnxt_re_dev_stop(rdev); break; case NETDEV_CHANGE: if (!netif_carrier_ok(rdev->netdev)) bnxt_re_dev_stop(rdev); else if (netif_carrier_ok(rdev->netdev)) bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE); ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed, &rdev->active_width); break; default: break; } smp_mb__before_atomic(); atomic_dec(&rdev->sched_count); exit: kfree(re_work); } static void bnxt_re_init_one(struct bnxt_re_dev *rdev) { pci_dev_get(rdev->en_dev->pdev); } /* * "Notifier chain callback can be invoked for the same chain from * different CPUs at the same time". * * For cases when the netdev is already present, our call to the * register_netdevice_notifier() will actually get the rtnl_lock() * before sending NETDEV_REGISTER and (if up) NETDEV_UP * events. * * But for cases when the netdev is not already present, the notifier * chain is subjected to be invoked from different CPUs simultaneously. * * This is protected by the netdev_mutex. */ static int bnxt_re_netdev_event(struct notifier_block *notifier, unsigned long event, void *ptr) { struct net_device *real_dev, *netdev = netdev_notifier_info_to_dev(ptr); struct bnxt_re_work *re_work; struct bnxt_re_dev *rdev; int rc = 0; bool sch_work = false; real_dev = rdma_vlan_dev_real_dev(netdev); if (!real_dev) real_dev = netdev; rdev = bnxt_re_from_netdev(real_dev); if (!rdev && event != NETDEV_REGISTER) goto exit; if (real_dev != netdev) goto exit; switch (event) { case NETDEV_REGISTER: if (rdev) break; rc = bnxt_re_dev_reg(&rdev, real_dev); if (rc == -ENODEV) break; if (rc) { pr_err("Failed to register with the device %s: %#x\n", real_dev->name, rc); break; } bnxt_re_init_one(rdev); sch_work = true; break; case NETDEV_UNREGISTER: /* netdev notifier will call NETDEV_UNREGISTER again later since * we are still holding the reference to the netdev */ if (atomic_read(&rdev->sched_count) > 0) goto exit; bnxt_re_ib_unreg(rdev); bnxt_re_remove_one(rdev); bnxt_re_dev_unreg(rdev); break; default: sch_work = true; break; } if (sch_work) { /* Allocate for the deferred task */ re_work = kzalloc(sizeof(*re_work), GFP_ATOMIC); if (re_work) { re_work->rdev = rdev; re_work->event = event; re_work->vlan_dev = (real_dev == netdev ? NULL : netdev); INIT_WORK(&re_work->work, bnxt_re_task); atomic_inc(&rdev->sched_count); queue_work(bnxt_re_wq, &re_work->work); } } exit: return NOTIFY_DONE; } static struct notifier_block bnxt_re_netdev_notifier = { .notifier_call = bnxt_re_netdev_event }; static int __init bnxt_re_mod_init(void) { int rc = 0; pr_info("%s: %s", ROCE_DRV_MODULE_NAME, version); bnxt_re_wq = create_singlethread_workqueue("bnxt_re"); if (!bnxt_re_wq) return -ENOMEM; INIT_LIST_HEAD(&bnxt_re_dev_list); rc = register_netdevice_notifier(&bnxt_re_netdev_notifier); if (rc) { pr_err("%s: Cannot register to netdevice_notifier", ROCE_DRV_MODULE_NAME); goto err_netdev; } return 0; err_netdev: destroy_workqueue(bnxt_re_wq); return rc; } static void __exit bnxt_re_mod_exit(void) { struct bnxt_re_dev *rdev, *next; LIST_HEAD(to_be_deleted); mutex_lock(&bnxt_re_dev_lock); /* Free all adapter allocated resources */ if (!list_empty(&bnxt_re_dev_list)) list_splice_init(&bnxt_re_dev_list, &to_be_deleted); mutex_unlock(&bnxt_re_dev_lock); /* * Cleanup the devices in reverse order so that the VF device * cleanup is done before PF cleanup */ list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) { dev_info(rdev_to_dev(rdev), "Unregistering Device"); /* * Flush out any scheduled tasks before destroying the * resources */ flush_workqueue(bnxt_re_wq); bnxt_re_dev_stop(rdev); /* Acquire the rtnl_lock as the L2 resources are freed here */ rtnl_lock(); bnxt_re_ib_unreg(rdev); rtnl_unlock(); bnxt_re_remove_one(rdev); bnxt_re_dev_unreg(rdev); } unregister_netdevice_notifier(&bnxt_re_netdev_notifier); if (bnxt_re_wq) destroy_workqueue(bnxt_re_wq); } module_init(bnxt_re_mod_init); module_exit(bnxt_re_mod_exit);
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