Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Gal Pressman | 9776 | 86.66% | 27 | 43.55% |
Michael Margolin | 579 | 5.13% | 4 | 6.45% |
Michal Kalderon | 511 | 4.53% | 2 | 3.23% |
Daniel Kranzdorf | 181 | 1.60% | 2 | 3.23% |
Leon Romanovsky | 79 | 0.70% | 6 | 9.68% |
Yonatan Nachum | 43 | 0.38% | 4 | 6.45% |
Jason Gunthorpe | 33 | 0.29% | 5 | 8.06% |
Aharon Landau | 15 | 0.13% | 1 | 1.61% |
Kamal Heib | 15 | 0.13% | 2 | 3.23% |
Maor Gottlieb | 13 | 0.12% | 1 | 1.61% |
Akiva Goldberger | 12 | 0.11% | 1 | 1.61% |
Mark Bloch | 8 | 0.07% | 1 | 1.61% |
shamir rabinovitch | 6 | 0.05% | 1 | 1.61% |
Michael Guralnik | 4 | 0.04% | 1 | 1.61% |
Moni Shoua | 3 | 0.03% | 2 | 3.23% |
Chien Tin Tung | 2 | 0.02% | 1 | 1.61% |
Julia Lawall | 1 | 0.01% | 1 | 1.61% |
Total | 11281 | 62 |
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* * Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved. */ #include <linux/dma-buf.h> #include <linux/dma-resv.h> #include <linux/vmalloc.h> #include <linux/log2.h> #include <rdma/ib_addr.h> #include <rdma/ib_umem.h> #include <rdma/ib_user_verbs.h> #include <rdma/ib_verbs.h> #include <rdma/uverbs_ioctl.h> #define UVERBS_MODULE_NAME efa_ib #include <rdma/uverbs_named_ioctl.h> #include <rdma/ib_user_ioctl_cmds.h> #include "efa.h" #include "efa_io_defs.h" enum { EFA_MMAP_DMA_PAGE = 0, EFA_MMAP_IO_WC, EFA_MMAP_IO_NC, }; struct efa_user_mmap_entry { struct rdma_user_mmap_entry rdma_entry; u64 address; u8 mmap_flag; }; #define EFA_DEFINE_DEVICE_STATS(op) \ op(EFA_SUBMITTED_CMDS, "submitted_cmds") \ op(EFA_COMPLETED_CMDS, "completed_cmds") \ op(EFA_CMDS_ERR, "cmds_err") \ op(EFA_NO_COMPLETION_CMDS, "no_completion_cmds") \ op(EFA_KEEP_ALIVE_RCVD, "keep_alive_rcvd") \ op(EFA_ALLOC_PD_ERR, "alloc_pd_err") \ op(EFA_CREATE_QP_ERR, "create_qp_err") \ op(EFA_CREATE_CQ_ERR, "create_cq_err") \ op(EFA_REG_MR_ERR, "reg_mr_err") \ op(EFA_ALLOC_UCONTEXT_ERR, "alloc_ucontext_err") \ op(EFA_CREATE_AH_ERR, "create_ah_err") \ op(EFA_MMAP_ERR, "mmap_err") #define EFA_DEFINE_PORT_STATS(op) \ op(EFA_TX_BYTES, "tx_bytes") \ op(EFA_TX_PKTS, "tx_pkts") \ op(EFA_RX_BYTES, "rx_bytes") \ op(EFA_RX_PKTS, "rx_pkts") \ op(EFA_RX_DROPS, "rx_drops") \ op(EFA_SEND_BYTES, "send_bytes") \ op(EFA_SEND_WRS, "send_wrs") \ op(EFA_RECV_BYTES, "recv_bytes") \ op(EFA_RECV_WRS, "recv_wrs") \ op(EFA_RDMA_READ_WRS, "rdma_read_wrs") \ op(EFA_RDMA_READ_BYTES, "rdma_read_bytes") \ op(EFA_RDMA_READ_WR_ERR, "rdma_read_wr_err") \ op(EFA_RDMA_READ_RESP_BYTES, "rdma_read_resp_bytes") \ op(EFA_RDMA_WRITE_WRS, "rdma_write_wrs") \ op(EFA_RDMA_WRITE_BYTES, "rdma_write_bytes") \ op(EFA_RDMA_WRITE_WR_ERR, "rdma_write_wr_err") \ op(EFA_RDMA_WRITE_RECV_BYTES, "rdma_write_recv_bytes") \ #define EFA_STATS_ENUM(ename, name) ename, #define EFA_STATS_STR(ename, nam) \ [ename].name = nam, enum efa_hw_device_stats { EFA_DEFINE_DEVICE_STATS(EFA_STATS_ENUM) }; static const struct rdma_stat_desc efa_device_stats_descs[] = { EFA_DEFINE_DEVICE_STATS(EFA_STATS_STR) }; enum efa_hw_port_stats { EFA_DEFINE_PORT_STATS(EFA_STATS_ENUM) }; static const struct rdma_stat_desc efa_port_stats_descs[] = { EFA_DEFINE_PORT_STATS(EFA_STATS_STR) }; #define EFA_CHUNK_PAYLOAD_SHIFT 12 #define EFA_CHUNK_PAYLOAD_SIZE BIT(EFA_CHUNK_PAYLOAD_SHIFT) #define EFA_CHUNK_PAYLOAD_PTR_SIZE 8 #define EFA_CHUNK_SHIFT 12 #define EFA_CHUNK_SIZE BIT(EFA_CHUNK_SHIFT) #define EFA_CHUNK_PTR_SIZE sizeof(struct efa_com_ctrl_buff_info) #define EFA_PTRS_PER_CHUNK \ ((EFA_CHUNK_SIZE - EFA_CHUNK_PTR_SIZE) / EFA_CHUNK_PAYLOAD_PTR_SIZE) #define EFA_CHUNK_USED_SIZE \ ((EFA_PTRS_PER_CHUNK * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE) struct pbl_chunk { dma_addr_t dma_addr; u64 *buf; u32 length; }; struct pbl_chunk_list { struct pbl_chunk *chunks; unsigned int size; }; struct pbl_context { union { struct { dma_addr_t dma_addr; } continuous; struct { u32 pbl_buf_size_in_pages; struct scatterlist *sgl; int sg_dma_cnt; struct pbl_chunk_list chunk_list; } indirect; } phys; u64 *pbl_buf; u32 pbl_buf_size_in_bytes; u8 physically_continuous; }; static inline struct efa_dev *to_edev(struct ib_device *ibdev) { return container_of(ibdev, struct efa_dev, ibdev); } static inline struct efa_ucontext *to_eucontext(struct ib_ucontext *ibucontext) { return container_of(ibucontext, struct efa_ucontext, ibucontext); } static inline struct efa_pd *to_epd(struct ib_pd *ibpd) { return container_of(ibpd, struct efa_pd, ibpd); } static inline struct efa_mr *to_emr(struct ib_mr *ibmr) { return container_of(ibmr, struct efa_mr, ibmr); } static inline struct efa_qp *to_eqp(struct ib_qp *ibqp) { return container_of(ibqp, struct efa_qp, ibqp); } static inline struct efa_cq *to_ecq(struct ib_cq *ibcq) { return container_of(ibcq, struct efa_cq, ibcq); } static inline struct efa_ah *to_eah(struct ib_ah *ibah) { return container_of(ibah, struct efa_ah, ibah); } static inline struct efa_user_mmap_entry * to_emmap(struct rdma_user_mmap_entry *rdma_entry) { return container_of(rdma_entry, struct efa_user_mmap_entry, rdma_entry); } #define EFA_DEV_CAP(dev, cap) \ ((dev)->dev_attr.device_caps & \ EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_##cap##_MASK) #define is_reserved_cleared(reserved) \ !memchr_inv(reserved, 0, sizeof(reserved)) static void *efa_zalloc_mapped(struct efa_dev *dev, dma_addr_t *dma_addr, size_t size, enum dma_data_direction dir) { void *addr; addr = alloc_pages_exact(size, GFP_KERNEL | __GFP_ZERO); if (!addr) return NULL; *dma_addr = dma_map_single(&dev->pdev->dev, addr, size, dir); if (dma_mapping_error(&dev->pdev->dev, *dma_addr)) { ibdev_err(&dev->ibdev, "Failed to map DMA address\n"); free_pages_exact(addr, size); return NULL; } return addr; } static void efa_free_mapped(struct efa_dev *dev, void *cpu_addr, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir) { dma_unmap_single(&dev->pdev->dev, dma_addr, size, dir); free_pages_exact(cpu_addr, size); } int efa_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *udata) { struct efa_com_get_device_attr_result *dev_attr; struct efa_ibv_ex_query_device_resp resp = {}; struct efa_dev *dev = to_edev(ibdev); int err; if (udata && udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) { ibdev_dbg(ibdev, "Incompatible ABI params, udata not cleared\n"); return -EINVAL; } dev_attr = &dev->dev_attr; memset(props, 0, sizeof(*props)); props->max_mr_size = dev_attr->max_mr_pages * PAGE_SIZE; props->page_size_cap = dev_attr->page_size_cap; props->vendor_id = dev->pdev->vendor; props->vendor_part_id = dev->pdev->device; props->hw_ver = dev->pdev->subsystem_device; props->max_qp = dev_attr->max_qp; props->max_cq = dev_attr->max_cq; props->max_pd = dev_attr->max_pd; props->max_mr = dev_attr->max_mr; props->max_ah = dev_attr->max_ah; props->max_cqe = dev_attr->max_cq_depth; props->max_qp_wr = min_t(u32, dev_attr->max_sq_depth, dev_attr->max_rq_depth); props->max_send_sge = dev_attr->max_sq_sge; props->max_recv_sge = dev_attr->max_rq_sge; props->max_sge_rd = dev_attr->max_wr_rdma_sge; props->max_pkeys = 1; if (udata && udata->outlen) { resp.max_sq_sge = dev_attr->max_sq_sge; resp.max_rq_sge = dev_attr->max_rq_sge; resp.max_sq_wr = dev_attr->max_sq_depth; resp.max_rq_wr = dev_attr->max_rq_depth; resp.max_rdma_size = dev_attr->max_rdma_size; resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID; if (EFA_DEV_CAP(dev, RDMA_READ)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_READ; if (EFA_DEV_CAP(dev, RNR_RETRY)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RNR_RETRY; if (EFA_DEV_CAP(dev, DATA_POLLING_128)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128; if (EFA_DEV_CAP(dev, RDMA_WRITE)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_WRITE; if (EFA_DEV_CAP(dev, UNSOLICITED_WRITE_RECV)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV; if (dev->neqs) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS; err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) { ibdev_dbg(ibdev, "Failed to copy udata for query_device\n"); return err; } } return 0; } int efa_query_port(struct ib_device *ibdev, u32 port, struct ib_port_attr *props) { struct efa_dev *dev = to_edev(ibdev); props->lmc = 1; props->state = IB_PORT_ACTIVE; props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; props->gid_tbl_len = 1; props->pkey_tbl_len = 1; props->active_speed = IB_SPEED_EDR; props->active_width = IB_WIDTH_4X; props->max_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); props->active_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); props->max_msg_sz = dev->dev_attr.mtu; props->max_vl_num = 1; return 0; } int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) { struct efa_dev *dev = to_edev(ibqp->device); struct efa_com_query_qp_params params = {}; struct efa_com_query_qp_result result; struct efa_qp *qp = to_eqp(ibqp); int err; #define EFA_QUERY_QP_SUPP_MASK \ (IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT | \ IB_QP_QKEY | IB_QP_SQ_PSN | IB_QP_CAP | IB_QP_RNR_RETRY) if (qp_attr_mask & ~EFA_QUERY_QP_SUPP_MASK) { ibdev_dbg(&dev->ibdev, "Unsupported qp_attr_mask[%#x] supported[%#x]\n", qp_attr_mask, EFA_QUERY_QP_SUPP_MASK); return -EOPNOTSUPP; } memset(qp_attr, 0, sizeof(*qp_attr)); memset(qp_init_attr, 0, sizeof(*qp_init_attr)); params.qp_handle = qp->qp_handle; err = efa_com_query_qp(&dev->edev, ¶ms, &result); if (err) return err; qp_attr->qp_state = result.qp_state; qp_attr->qkey = result.qkey; qp_attr->sq_psn = result.sq_psn; qp_attr->sq_draining = result.sq_draining; qp_attr->port_num = 1; qp_attr->rnr_retry = result.rnr_retry; qp_attr->cap.max_send_wr = qp->max_send_wr; qp_attr->cap.max_recv_wr = qp->max_recv_wr; qp_attr->cap.max_send_sge = qp->max_send_sge; qp_attr->cap.max_recv_sge = qp->max_recv_sge; qp_attr->cap.max_inline_data = qp->max_inline_data; qp_init_attr->qp_type = ibqp->qp_type; qp_init_attr->recv_cq = ibqp->recv_cq; qp_init_attr->send_cq = ibqp->send_cq; qp_init_attr->qp_context = ibqp->qp_context; qp_init_attr->cap = qp_attr->cap; return 0; } int efa_query_gid(struct ib_device *ibdev, u32 port, int index, union ib_gid *gid) { struct efa_dev *dev = to_edev(ibdev); memcpy(gid->raw, dev->dev_attr.addr, sizeof(dev->dev_attr.addr)); return 0; } int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index, u16 *pkey) { if (index > 0) return -EINVAL; *pkey = 0xffff; return 0; } static int efa_pd_dealloc(struct efa_dev *dev, u16 pdn) { struct efa_com_dealloc_pd_params params = { .pdn = pdn, }; return efa_com_dealloc_pd(&dev->edev, ¶ms); } int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibpd->device); struct efa_ibv_alloc_pd_resp resp = {}; struct efa_com_alloc_pd_result result; struct efa_pd *pd = to_epd(ibpd); int err; if (udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, udata not cleared\n"); err = -EINVAL; goto err_out; } err = efa_com_alloc_pd(&dev->edev, &result); if (err) goto err_out; pd->pdn = result.pdn; resp.pdn = result.pdn; if (udata->outlen) { err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) { ibdev_dbg(&dev->ibdev, "Failed to copy udata for alloc_pd\n"); goto err_dealloc_pd; } } ibdev_dbg(&dev->ibdev, "Allocated pd[%d]\n", pd->pdn); return 0; err_dealloc_pd: efa_pd_dealloc(dev, result.pdn); err_out: atomic64_inc(&dev->stats.alloc_pd_err); return err; } int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibpd->device); struct efa_pd *pd = to_epd(ibpd); ibdev_dbg(&dev->ibdev, "Dealloc pd[%d]\n", pd->pdn); efa_pd_dealloc(dev, pd->pdn); return 0; } static int efa_destroy_qp_handle(struct efa_dev *dev, u32 qp_handle) { struct efa_com_destroy_qp_params params = { .qp_handle = qp_handle }; return efa_com_destroy_qp(&dev->edev, ¶ms); } static void efa_qp_user_mmap_entries_remove(struct efa_qp *qp) { rdma_user_mmap_entry_remove(qp->rq_mmap_entry); rdma_user_mmap_entry_remove(qp->rq_db_mmap_entry); rdma_user_mmap_entry_remove(qp->llq_desc_mmap_entry); rdma_user_mmap_entry_remove(qp->sq_db_mmap_entry); } int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibqp->pd->device); struct efa_qp *qp = to_eqp(ibqp); int err; ibdev_dbg(&dev->ibdev, "Destroy qp[%u]\n", ibqp->qp_num); err = efa_destroy_qp_handle(dev, qp->qp_handle); if (err) return err; efa_qp_user_mmap_entries_remove(qp); if (qp->rq_cpu_addr) { ibdev_dbg(&dev->ibdev, "qp->cpu_addr[0x%p] freed: size[%lu], dma[%pad]\n", qp->rq_cpu_addr, qp->rq_size, &qp->rq_dma_addr); efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr, qp->rq_size, DMA_TO_DEVICE); } return 0; } static struct rdma_user_mmap_entry* efa_user_mmap_entry_insert(struct ib_ucontext *ucontext, u64 address, size_t length, u8 mmap_flag, u64 *offset) { struct efa_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL); int err; if (!entry) return NULL; entry->address = address; entry->mmap_flag = mmap_flag; err = rdma_user_mmap_entry_insert(ucontext, &entry->rdma_entry, length); if (err) { kfree(entry); return NULL; } *offset = rdma_user_mmap_get_offset(&entry->rdma_entry); return &entry->rdma_entry; } static int qp_mmap_entries_setup(struct efa_qp *qp, struct efa_dev *dev, struct efa_ucontext *ucontext, struct efa_com_create_qp_params *params, struct efa_ibv_create_qp_resp *resp) { size_t length; u64 address; address = dev->db_bar_addr + resp->sq_db_offset; qp->sq_db_mmap_entry = efa_user_mmap_entry_insert(&ucontext->ibucontext, address, PAGE_SIZE, EFA_MMAP_IO_NC, &resp->sq_db_mmap_key); if (!qp->sq_db_mmap_entry) return -ENOMEM; resp->sq_db_offset &= ~PAGE_MASK; address = dev->mem_bar_addr + resp->llq_desc_offset; length = PAGE_ALIGN(params->sq_ring_size_in_bytes + offset_in_page(resp->llq_desc_offset)); qp->llq_desc_mmap_entry = efa_user_mmap_entry_insert(&ucontext->ibucontext, address, length, EFA_MMAP_IO_WC, &resp->llq_desc_mmap_key); if (!qp->llq_desc_mmap_entry) goto err_remove_mmap; resp->llq_desc_offset &= ~PAGE_MASK; if (qp->rq_size) { address = dev->db_bar_addr + resp->rq_db_offset; qp->rq_db_mmap_entry = efa_user_mmap_entry_insert(&ucontext->ibucontext, address, PAGE_SIZE, EFA_MMAP_IO_NC, &resp->rq_db_mmap_key); if (!qp->rq_db_mmap_entry) goto err_remove_mmap; resp->rq_db_offset &= ~PAGE_MASK; address = virt_to_phys(qp->rq_cpu_addr); qp->rq_mmap_entry = efa_user_mmap_entry_insert(&ucontext->ibucontext, address, qp->rq_size, EFA_MMAP_DMA_PAGE, &resp->rq_mmap_key); if (!qp->rq_mmap_entry) goto err_remove_mmap; resp->rq_mmap_size = qp->rq_size; } return 0; err_remove_mmap: efa_qp_user_mmap_entries_remove(qp); return -ENOMEM; } static int efa_qp_validate_cap(struct efa_dev *dev, struct ib_qp_init_attr *init_attr) { if (init_attr->cap.max_send_wr > dev->dev_attr.max_sq_depth) { ibdev_dbg(&dev->ibdev, "qp: requested send wr[%u] exceeds the max[%u]\n", init_attr->cap.max_send_wr, dev->dev_attr.max_sq_depth); return -EINVAL; } if (init_attr->cap.max_recv_wr > dev->dev_attr.max_rq_depth) { ibdev_dbg(&dev->ibdev, "qp: requested receive wr[%u] exceeds the max[%u]\n", init_attr->cap.max_recv_wr, dev->dev_attr.max_rq_depth); return -EINVAL; } if (init_attr->cap.max_send_sge > dev->dev_attr.max_sq_sge) { ibdev_dbg(&dev->ibdev, "qp: requested sge send[%u] exceeds the max[%u]\n", init_attr->cap.max_send_sge, dev->dev_attr.max_sq_sge); return -EINVAL; } if (init_attr->cap.max_recv_sge > dev->dev_attr.max_rq_sge) { ibdev_dbg(&dev->ibdev, "qp: requested sge recv[%u] exceeds the max[%u]\n", init_attr->cap.max_recv_sge, dev->dev_attr.max_rq_sge); return -EINVAL; } if (init_attr->cap.max_inline_data > dev->dev_attr.inline_buf_size) { ibdev_dbg(&dev->ibdev, "qp: requested inline data[%u] exceeds the max[%u]\n", init_attr->cap.max_inline_data, dev->dev_attr.inline_buf_size); return -EINVAL; } return 0; } static int efa_qp_validate_attr(struct efa_dev *dev, struct ib_qp_init_attr *init_attr) { if (init_attr->qp_type != IB_QPT_DRIVER && init_attr->qp_type != IB_QPT_UD) { ibdev_dbg(&dev->ibdev, "Unsupported qp type %d\n", init_attr->qp_type); return -EOPNOTSUPP; } if (init_attr->srq) { ibdev_dbg(&dev->ibdev, "SRQ is not supported\n"); return -EOPNOTSUPP; } if (init_attr->create_flags) { ibdev_dbg(&dev->ibdev, "Unsupported create flags\n"); return -EOPNOTSUPP; } return 0; } int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr, struct ib_udata *udata) { struct efa_com_create_qp_params create_qp_params = {}; struct efa_com_create_qp_result create_qp_resp; struct efa_dev *dev = to_edev(ibqp->device); struct efa_ibv_create_qp_resp resp = {}; struct efa_ibv_create_qp cmd = {}; struct efa_qp *qp = to_eqp(ibqp); struct efa_ucontext *ucontext; u16 supported_efa_flags = 0; int err; ucontext = rdma_udata_to_drv_context(udata, struct efa_ucontext, ibucontext); err = efa_qp_validate_cap(dev, init_attr); if (err) goto err_out; err = efa_qp_validate_attr(dev, init_attr); if (err) goto err_out; if (offsetofend(typeof(cmd), driver_qp_type) > udata->inlen) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, no input udata\n"); err = -EINVAL; goto err_out; } if (udata->inlen > sizeof(cmd) && !ib_is_udata_cleared(udata, sizeof(cmd), udata->inlen - sizeof(cmd))) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, unknown fields in udata\n"); err = -EINVAL; goto err_out; } err = ib_copy_from_udata(&cmd, udata, min(sizeof(cmd), udata->inlen)); if (err) { ibdev_dbg(&dev->ibdev, "Cannot copy udata for create_qp\n"); goto err_out; } if (cmd.comp_mask || !is_reserved_cleared(cmd.reserved_90)) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, unknown fields in udata\n"); err = -EINVAL; goto err_out; } if (EFA_DEV_CAP(dev, UNSOLICITED_WRITE_RECV)) supported_efa_flags |= EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV; if (cmd.flags & ~supported_efa_flags) { ibdev_dbg(&dev->ibdev, "Unsupported EFA QP create flags[%#x], supported[%#x]\n", cmd.flags, supported_efa_flags); err = -EOPNOTSUPP; goto err_out; } create_qp_params.uarn = ucontext->uarn; create_qp_params.pd = to_epd(ibqp->pd)->pdn; if (init_attr->qp_type == IB_QPT_UD) { create_qp_params.qp_type = EFA_ADMIN_QP_TYPE_UD; } else if (cmd.driver_qp_type == EFA_QP_DRIVER_TYPE_SRD) { create_qp_params.qp_type = EFA_ADMIN_QP_TYPE_SRD; } else { ibdev_dbg(&dev->ibdev, "Unsupported qp type %d driver qp type %d\n", init_attr->qp_type, cmd.driver_qp_type); err = -EOPNOTSUPP; goto err_out; } ibdev_dbg(&dev->ibdev, "Create QP: qp type %d driver qp type %#x\n", init_attr->qp_type, cmd.driver_qp_type); create_qp_params.send_cq_idx = to_ecq(init_attr->send_cq)->cq_idx; create_qp_params.recv_cq_idx = to_ecq(init_attr->recv_cq)->cq_idx; create_qp_params.sq_depth = init_attr->cap.max_send_wr; create_qp_params.sq_ring_size_in_bytes = cmd.sq_ring_size; create_qp_params.rq_depth = init_attr->cap.max_recv_wr; create_qp_params.rq_ring_size_in_bytes = cmd.rq_ring_size; qp->rq_size = PAGE_ALIGN(create_qp_params.rq_ring_size_in_bytes); if (qp->rq_size) { qp->rq_cpu_addr = efa_zalloc_mapped(dev, &qp->rq_dma_addr, qp->rq_size, DMA_TO_DEVICE); if (!qp->rq_cpu_addr) { err = -ENOMEM; goto err_out; } ibdev_dbg(&dev->ibdev, "qp->cpu_addr[0x%p] allocated: size[%lu], dma[%pad]\n", qp->rq_cpu_addr, qp->rq_size, &qp->rq_dma_addr); create_qp_params.rq_base_addr = qp->rq_dma_addr; } if (cmd.flags & EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV) create_qp_params.unsolicited_write_recv = true; err = efa_com_create_qp(&dev->edev, &create_qp_params, &create_qp_resp); if (err) goto err_free_mapped; resp.sq_db_offset = create_qp_resp.sq_db_offset; resp.rq_db_offset = create_qp_resp.rq_db_offset; resp.llq_desc_offset = create_qp_resp.llq_descriptors_offset; resp.send_sub_cq_idx = create_qp_resp.send_sub_cq_idx; resp.recv_sub_cq_idx = create_qp_resp.recv_sub_cq_idx; err = qp_mmap_entries_setup(qp, dev, ucontext, &create_qp_params, &resp); if (err) goto err_destroy_qp; qp->qp_handle = create_qp_resp.qp_handle; qp->ibqp.qp_num = create_qp_resp.qp_num; qp->max_send_wr = init_attr->cap.max_send_wr; qp->max_recv_wr = init_attr->cap.max_recv_wr; qp->max_send_sge = init_attr->cap.max_send_sge; qp->max_recv_sge = init_attr->cap.max_recv_sge; qp->max_inline_data = init_attr->cap.max_inline_data; if (udata->outlen) { err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) { ibdev_dbg(&dev->ibdev, "Failed to copy udata for qp[%u]\n", create_qp_resp.qp_num); goto err_remove_mmap_entries; } } ibdev_dbg(&dev->ibdev, "Created qp[%d]\n", qp->ibqp.qp_num); return 0; err_remove_mmap_entries: efa_qp_user_mmap_entries_remove(qp); err_destroy_qp: efa_destroy_qp_handle(dev, create_qp_resp.qp_handle); err_free_mapped: if (qp->rq_size) efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr, qp->rq_size, DMA_TO_DEVICE); err_out: atomic64_inc(&dev->stats.create_qp_err); return err; } static const struct { int valid; enum ib_qp_attr_mask req_param; enum ib_qp_attr_mask opt_param; } srd_qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { [IB_QPS_RESET] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_INIT] = { .valid = 1, .req_param = IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY, }, }, [IB_QPS_INIT] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_INIT] = { .valid = 1, .opt_param = IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY, }, [IB_QPS_RTR] = { .valid = 1, .opt_param = IB_QP_PKEY_INDEX | IB_QP_QKEY, }, }, [IB_QPS_RTR] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .req_param = IB_QP_SQ_PSN, .opt_param = IB_QP_CUR_STATE | IB_QP_QKEY | IB_QP_RNR_RETRY, } }, [IB_QPS_RTS] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = IB_QP_CUR_STATE | IB_QP_QKEY, }, [IB_QPS_SQD] = { .valid = 1, .opt_param = IB_QP_EN_SQD_ASYNC_NOTIFY, }, }, [IB_QPS_SQD] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = IB_QP_CUR_STATE | IB_QP_QKEY, }, [IB_QPS_SQD] = { .valid = 1, .opt_param = IB_QP_PKEY_INDEX | IB_QP_QKEY, } }, [IB_QPS_SQE] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = IB_QP_CUR_STATE | IB_QP_QKEY, } }, [IB_QPS_ERR] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, } }; static bool efa_modify_srd_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, enum ib_qp_attr_mask mask) { enum ib_qp_attr_mask req_param, opt_param; if (mask & IB_QP_CUR_STATE && cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) return false; if (!srd_qp_state_table[cur_state][next_state].valid) return false; req_param = srd_qp_state_table[cur_state][next_state].req_param; opt_param = srd_qp_state_table[cur_state][next_state].opt_param; if ((mask & req_param) != req_param) return false; if (mask & ~(req_param | opt_param | IB_QP_STATE)) return false; return true; } static int efa_modify_qp_validate(struct efa_dev *dev, struct efa_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask, enum ib_qp_state cur_state, enum ib_qp_state new_state) { int err; #define EFA_MODIFY_QP_SUPP_MASK \ (IB_QP_STATE | IB_QP_CUR_STATE | IB_QP_EN_SQD_ASYNC_NOTIFY | \ IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY | IB_QP_SQ_PSN | \ IB_QP_RNR_RETRY) if (qp_attr_mask & ~EFA_MODIFY_QP_SUPP_MASK) { ibdev_dbg(&dev->ibdev, "Unsupported qp_attr_mask[%#x] supported[%#x]\n", qp_attr_mask, EFA_MODIFY_QP_SUPP_MASK); return -EOPNOTSUPP; } if (qp->ibqp.qp_type == IB_QPT_DRIVER) err = !efa_modify_srd_qp_is_ok(cur_state, new_state, qp_attr_mask); else err = !ib_modify_qp_is_ok(cur_state, new_state, IB_QPT_UD, qp_attr_mask); if (err) { ibdev_dbg(&dev->ibdev, "Invalid modify QP parameters\n"); return -EINVAL; } if ((qp_attr_mask & IB_QP_PORT) && qp_attr->port_num != 1) { ibdev_dbg(&dev->ibdev, "Can't change port num\n"); return -EOPNOTSUPP; } if ((qp_attr_mask & IB_QP_PKEY_INDEX) && qp_attr->pkey_index) { ibdev_dbg(&dev->ibdev, "Can't change pkey index\n"); return -EOPNOTSUPP; } return 0; } int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibqp->device); struct efa_com_modify_qp_params params = {}; struct efa_qp *qp = to_eqp(ibqp); enum ib_qp_state cur_state; enum ib_qp_state new_state; int err; if (qp_attr_mask & ~IB_QP_ATTR_STANDARD_BITS) return -EOPNOTSUPP; if (udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, udata not cleared\n"); return -EINVAL; } cur_state = qp_attr_mask & IB_QP_CUR_STATE ? qp_attr->cur_qp_state : qp->state; new_state = qp_attr_mask & IB_QP_STATE ? qp_attr->qp_state : cur_state; err = efa_modify_qp_validate(dev, qp, qp_attr, qp_attr_mask, cur_state, new_state); if (err) return err; params.qp_handle = qp->qp_handle; if (qp_attr_mask & IB_QP_STATE) { EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_QP_STATE, 1); EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_CUR_QP_STATE, 1); params.cur_qp_state = cur_state; params.qp_state = new_state; } if (qp_attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) { EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_SQ_DRAINED_ASYNC_NOTIFY, 1); params.sq_drained_async_notify = qp_attr->en_sqd_async_notify; } if (qp_attr_mask & IB_QP_QKEY) { EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_QKEY, 1); params.qkey = qp_attr->qkey; } if (qp_attr_mask & IB_QP_SQ_PSN) { EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_SQ_PSN, 1); params.sq_psn = qp_attr->sq_psn; } if (qp_attr_mask & IB_QP_RNR_RETRY) { EFA_SET(¶ms.modify_mask, EFA_ADMIN_MODIFY_QP_CMD_RNR_RETRY, 1); params.rnr_retry = qp_attr->rnr_retry; } err = efa_com_modify_qp(&dev->edev, ¶ms); if (err) return err; qp->state = new_state; return 0; } static int efa_destroy_cq_idx(struct efa_dev *dev, int cq_idx) { struct efa_com_destroy_cq_params params = { .cq_idx = cq_idx }; return efa_com_destroy_cq(&dev->edev, ¶ms); } static void efa_cq_user_mmap_entries_remove(struct efa_cq *cq) { rdma_user_mmap_entry_remove(cq->db_mmap_entry); rdma_user_mmap_entry_remove(cq->mmap_entry); } int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibcq->device); struct efa_cq *cq = to_ecq(ibcq); ibdev_dbg(&dev->ibdev, "Destroy cq[%d] virt[0x%p] freed: size[%lu], dma[%pad]\n", cq->cq_idx, cq->cpu_addr, cq->size, &cq->dma_addr); efa_destroy_cq_idx(dev, cq->cq_idx); efa_cq_user_mmap_entries_remove(cq); if (cq->eq) { xa_erase(&dev->cqs_xa, cq->cq_idx); synchronize_irq(cq->eq->irq.irqn); } efa_free_mapped(dev, cq->cpu_addr, cq->dma_addr, cq->size, DMA_FROM_DEVICE); return 0; } static struct efa_eq *efa_vec2eq(struct efa_dev *dev, int vec) { return &dev->eqs[vec]; } static int cq_mmap_entries_setup(struct efa_dev *dev, struct efa_cq *cq, struct efa_ibv_create_cq_resp *resp, bool db_valid) { resp->q_mmap_size = cq->size; cq->mmap_entry = efa_user_mmap_entry_insert(&cq->ucontext->ibucontext, virt_to_phys(cq->cpu_addr), cq->size, EFA_MMAP_DMA_PAGE, &resp->q_mmap_key); if (!cq->mmap_entry) return -ENOMEM; if (db_valid) { cq->db_mmap_entry = efa_user_mmap_entry_insert(&cq->ucontext->ibucontext, dev->db_bar_addr + resp->db_off, PAGE_SIZE, EFA_MMAP_IO_NC, &resp->db_mmap_key); if (!cq->db_mmap_entry) { rdma_user_mmap_entry_remove(cq->mmap_entry); return -ENOMEM; } resp->db_off &= ~PAGE_MASK; resp->comp_mask |= EFA_CREATE_CQ_RESP_DB_OFF; } return 0; } int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct uverbs_attr_bundle *attrs) { struct ib_udata *udata = &attrs->driver_udata; struct efa_ucontext *ucontext = rdma_udata_to_drv_context( udata, struct efa_ucontext, ibucontext); struct efa_com_create_cq_params params = {}; struct efa_ibv_create_cq_resp resp = {}; struct efa_com_create_cq_result result; struct ib_device *ibdev = ibcq->device; struct efa_dev *dev = to_edev(ibdev); struct efa_ibv_create_cq cmd = {}; struct efa_cq *cq = to_ecq(ibcq); int entries = attr->cqe; bool set_src_addr; int err; ibdev_dbg(ibdev, "create_cq entries %d\n", entries); if (attr->flags) return -EOPNOTSUPP; if (entries < 1 || entries > dev->dev_attr.max_cq_depth) { ibdev_dbg(ibdev, "cq: requested entries[%u] non-positive or greater than max[%u]\n", entries, dev->dev_attr.max_cq_depth); err = -EINVAL; goto err_out; } if (offsetofend(typeof(cmd), num_sub_cqs) > udata->inlen) { ibdev_dbg(ibdev, "Incompatible ABI params, no input udata\n"); err = -EINVAL; goto err_out; } if (udata->inlen > sizeof(cmd) && !ib_is_udata_cleared(udata, sizeof(cmd), udata->inlen - sizeof(cmd))) { ibdev_dbg(ibdev, "Incompatible ABI params, unknown fields in udata\n"); err = -EINVAL; goto err_out; } err = ib_copy_from_udata(&cmd, udata, min(sizeof(cmd), udata->inlen)); if (err) { ibdev_dbg(ibdev, "Cannot copy udata for create_cq\n"); goto err_out; } if (cmd.comp_mask || !is_reserved_cleared(cmd.reserved_58)) { ibdev_dbg(ibdev, "Incompatible ABI params, unknown fields in udata\n"); err = -EINVAL; goto err_out; } set_src_addr = !!(cmd.flags & EFA_CREATE_CQ_WITH_SGID); if ((cmd.cq_entry_size != sizeof(struct efa_io_rx_cdesc_ex)) && (set_src_addr || cmd.cq_entry_size != sizeof(struct efa_io_rx_cdesc))) { ibdev_dbg(ibdev, "Invalid entry size [%u]\n", cmd.cq_entry_size); err = -EINVAL; goto err_out; } if (cmd.num_sub_cqs != dev->dev_attr.sub_cqs_per_cq) { ibdev_dbg(ibdev, "Invalid number of sub cqs[%u] expected[%u]\n", cmd.num_sub_cqs, dev->dev_attr.sub_cqs_per_cq); err = -EINVAL; goto err_out; } cq->ucontext = ucontext; cq->size = PAGE_ALIGN(cmd.cq_entry_size * entries * cmd.num_sub_cqs); cq->cpu_addr = efa_zalloc_mapped(dev, &cq->dma_addr, cq->size, DMA_FROM_DEVICE); if (!cq->cpu_addr) { err = -ENOMEM; goto err_out; } params.uarn = cq->ucontext->uarn; params.cq_depth = entries; params.dma_addr = cq->dma_addr; params.entry_size_in_bytes = cmd.cq_entry_size; params.num_sub_cqs = cmd.num_sub_cqs; params.set_src_addr = set_src_addr; if (cmd.flags & EFA_CREATE_CQ_WITH_COMPLETION_CHANNEL) { cq->eq = efa_vec2eq(dev, attr->comp_vector); params.eqn = cq->eq->eeq.eqn; params.interrupt_mode_enabled = true; } err = efa_com_create_cq(&dev->edev, ¶ms, &result); if (err) goto err_free_mapped; resp.db_off = result.db_off; resp.cq_idx = result.cq_idx; cq->cq_idx = result.cq_idx; cq->ibcq.cqe = result.actual_depth; WARN_ON_ONCE(entries != result.actual_depth); err = cq_mmap_entries_setup(dev, cq, &resp, result.db_valid); if (err) { ibdev_dbg(ibdev, "Could not setup cq[%u] mmap entries\n", cq->cq_idx); goto err_destroy_cq; } if (cq->eq) { err = xa_err(xa_store(&dev->cqs_xa, cq->cq_idx, cq, GFP_KERNEL)); if (err) { ibdev_dbg(ibdev, "Failed to store cq[%u] in xarray\n", cq->cq_idx); goto err_remove_mmap; } } if (udata->outlen) { err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) { ibdev_dbg(ibdev, "Failed to copy udata for create_cq\n"); goto err_xa_erase; } } ibdev_dbg(ibdev, "Created cq[%d], cq depth[%u]. dma[%pad] virt[0x%p]\n", cq->cq_idx, result.actual_depth, &cq->dma_addr, cq->cpu_addr); return 0; err_xa_erase: if (cq->eq) xa_erase(&dev->cqs_xa, cq->cq_idx); err_remove_mmap: efa_cq_user_mmap_entries_remove(cq); err_destroy_cq: efa_destroy_cq_idx(dev, cq->cq_idx); err_free_mapped: efa_free_mapped(dev, cq->cpu_addr, cq->dma_addr, cq->size, DMA_FROM_DEVICE); err_out: atomic64_inc(&dev->stats.create_cq_err); return err; } static int umem_to_page_list(struct efa_dev *dev, struct ib_umem *umem, u64 *page_list, u32 hp_cnt, u8 hp_shift) { u32 pages_in_hp = BIT(hp_shift - PAGE_SHIFT); struct ib_block_iter biter; unsigned int hp_idx = 0; ibdev_dbg(&dev->ibdev, "hp_cnt[%u], pages_in_hp[%u]\n", hp_cnt, pages_in_hp); rdma_umem_for_each_dma_block(umem, &biter, BIT(hp_shift)) page_list[hp_idx++] = rdma_block_iter_dma_address(&biter); return 0; } static struct scatterlist *efa_vmalloc_buf_to_sg(u64 *buf, int page_cnt) { struct scatterlist *sglist; struct page *pg; int i; sglist = kmalloc_array(page_cnt, sizeof(*sglist), GFP_KERNEL); if (!sglist) return NULL; sg_init_table(sglist, page_cnt); for (i = 0; i < page_cnt; i++) { pg = vmalloc_to_page(buf); if (!pg) goto err; sg_set_page(&sglist[i], pg, PAGE_SIZE, 0); buf += PAGE_SIZE / sizeof(*buf); } return sglist; err: kfree(sglist); return NULL; } /* * create a chunk list of physical pages dma addresses from the supplied * scatter gather list */ static int pbl_chunk_list_create(struct efa_dev *dev, struct pbl_context *pbl) { struct pbl_chunk_list *chunk_list = &pbl->phys.indirect.chunk_list; int page_cnt = pbl->phys.indirect.pbl_buf_size_in_pages; struct scatterlist *pages_sgl = pbl->phys.indirect.sgl; unsigned int chunk_list_size, chunk_idx, payload_idx; int sg_dma_cnt = pbl->phys.indirect.sg_dma_cnt; struct efa_com_ctrl_buff_info *ctrl_buf; u64 *cur_chunk_buf, *prev_chunk_buf; struct ib_block_iter biter; dma_addr_t dma_addr; int i; /* allocate a chunk list that consists of 4KB chunks */ chunk_list_size = DIV_ROUND_UP(page_cnt, EFA_PTRS_PER_CHUNK); chunk_list->size = chunk_list_size; chunk_list->chunks = kcalloc(chunk_list_size, sizeof(*chunk_list->chunks), GFP_KERNEL); if (!chunk_list->chunks) return -ENOMEM; ibdev_dbg(&dev->ibdev, "chunk_list_size[%u] - pages[%u]\n", chunk_list_size, page_cnt); /* allocate chunk buffers: */ for (i = 0; i < chunk_list_size; i++) { chunk_list->chunks[i].buf = kzalloc(EFA_CHUNK_SIZE, GFP_KERNEL); if (!chunk_list->chunks[i].buf) goto chunk_list_dealloc; chunk_list->chunks[i].length = EFA_CHUNK_USED_SIZE; } chunk_list->chunks[chunk_list_size - 1].length = ((page_cnt % EFA_PTRS_PER_CHUNK) * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE; /* fill the dma addresses of sg list pages to chunks: */ chunk_idx = 0; payload_idx = 0; cur_chunk_buf = chunk_list->chunks[0].buf; rdma_for_each_block(pages_sgl, &biter, sg_dma_cnt, EFA_CHUNK_PAYLOAD_SIZE) { cur_chunk_buf[payload_idx++] = rdma_block_iter_dma_address(&biter); if (payload_idx == EFA_PTRS_PER_CHUNK) { chunk_idx++; cur_chunk_buf = chunk_list->chunks[chunk_idx].buf; payload_idx = 0; } } /* map chunks to dma and fill chunks next ptrs */ for (i = chunk_list_size - 1; i >= 0; i--) { dma_addr = dma_map_single(&dev->pdev->dev, chunk_list->chunks[i].buf, chunk_list->chunks[i].length, DMA_TO_DEVICE); if (dma_mapping_error(&dev->pdev->dev, dma_addr)) { ibdev_err(&dev->ibdev, "chunk[%u] dma_map_failed\n", i); goto chunk_list_unmap; } chunk_list->chunks[i].dma_addr = dma_addr; ibdev_dbg(&dev->ibdev, "chunk[%u] mapped at [%pad]\n", i, &dma_addr); if (!i) break; prev_chunk_buf = chunk_list->chunks[i - 1].buf; ctrl_buf = (struct efa_com_ctrl_buff_info *) &prev_chunk_buf[EFA_PTRS_PER_CHUNK]; ctrl_buf->length = chunk_list->chunks[i].length; efa_com_set_dma_addr(dma_addr, &ctrl_buf->address.mem_addr_high, &ctrl_buf->address.mem_addr_low); } return 0; chunk_list_unmap: for (; i < chunk_list_size; i++) { dma_unmap_single(&dev->pdev->dev, chunk_list->chunks[i].dma_addr, chunk_list->chunks[i].length, DMA_TO_DEVICE); } chunk_list_dealloc: for (i = 0; i < chunk_list_size; i++) kfree(chunk_list->chunks[i].buf); kfree(chunk_list->chunks); return -ENOMEM; } static void pbl_chunk_list_destroy(struct efa_dev *dev, struct pbl_context *pbl) { struct pbl_chunk_list *chunk_list = &pbl->phys.indirect.chunk_list; int i; for (i = 0; i < chunk_list->size; i++) { dma_unmap_single(&dev->pdev->dev, chunk_list->chunks[i].dma_addr, chunk_list->chunks[i].length, DMA_TO_DEVICE); kfree(chunk_list->chunks[i].buf); } kfree(chunk_list->chunks); } /* initialize pbl continuous mode: map pbl buffer to a dma address. */ static int pbl_continuous_initialize(struct efa_dev *dev, struct pbl_context *pbl) { dma_addr_t dma_addr; dma_addr = dma_map_single(&dev->pdev->dev, pbl->pbl_buf, pbl->pbl_buf_size_in_bytes, DMA_TO_DEVICE); if (dma_mapping_error(&dev->pdev->dev, dma_addr)) { ibdev_err(&dev->ibdev, "Unable to map pbl to DMA address\n"); return -ENOMEM; } pbl->phys.continuous.dma_addr = dma_addr; ibdev_dbg(&dev->ibdev, "pbl continuous - dma_addr = %pad, size[%u]\n", &dma_addr, pbl->pbl_buf_size_in_bytes); return 0; } /* * initialize pbl indirect mode: * create a chunk list out of the dma addresses of the physical pages of * pbl buffer. */ static int pbl_indirect_initialize(struct efa_dev *dev, struct pbl_context *pbl) { u32 size_in_pages = DIV_ROUND_UP(pbl->pbl_buf_size_in_bytes, EFA_CHUNK_PAYLOAD_SIZE); struct scatterlist *sgl; int sg_dma_cnt, err; BUILD_BUG_ON(EFA_CHUNK_PAYLOAD_SIZE > PAGE_SIZE); sgl = efa_vmalloc_buf_to_sg(pbl->pbl_buf, size_in_pages); if (!sgl) return -ENOMEM; sg_dma_cnt = dma_map_sg(&dev->pdev->dev, sgl, size_in_pages, DMA_TO_DEVICE); if (!sg_dma_cnt) { err = -EINVAL; goto err_map; } pbl->phys.indirect.pbl_buf_size_in_pages = size_in_pages; pbl->phys.indirect.sgl = sgl; pbl->phys.indirect.sg_dma_cnt = sg_dma_cnt; err = pbl_chunk_list_create(dev, pbl); if (err) { ibdev_dbg(&dev->ibdev, "chunk_list creation failed[%d]\n", err); goto err_chunk; } ibdev_dbg(&dev->ibdev, "pbl indirect - size[%u], chunks[%u]\n", pbl->pbl_buf_size_in_bytes, pbl->phys.indirect.chunk_list.size); return 0; err_chunk: dma_unmap_sg(&dev->pdev->dev, sgl, size_in_pages, DMA_TO_DEVICE); err_map: kfree(sgl); return err; } static void pbl_indirect_terminate(struct efa_dev *dev, struct pbl_context *pbl) { pbl_chunk_list_destroy(dev, pbl); dma_unmap_sg(&dev->pdev->dev, pbl->phys.indirect.sgl, pbl->phys.indirect.pbl_buf_size_in_pages, DMA_TO_DEVICE); kfree(pbl->phys.indirect.sgl); } /* create a page buffer list from a mapped user memory region */ static int pbl_create(struct efa_dev *dev, struct pbl_context *pbl, struct ib_umem *umem, int hp_cnt, u8 hp_shift) { int err; pbl->pbl_buf_size_in_bytes = hp_cnt * EFA_CHUNK_PAYLOAD_PTR_SIZE; pbl->pbl_buf = kvzalloc(pbl->pbl_buf_size_in_bytes, GFP_KERNEL); if (!pbl->pbl_buf) return -ENOMEM; if (is_vmalloc_addr(pbl->pbl_buf)) { pbl->physically_continuous = 0; err = umem_to_page_list(dev, umem, pbl->pbl_buf, hp_cnt, hp_shift); if (err) goto err_free; err = pbl_indirect_initialize(dev, pbl); if (err) goto err_free; } else { pbl->physically_continuous = 1; err = umem_to_page_list(dev, umem, pbl->pbl_buf, hp_cnt, hp_shift); if (err) goto err_free; err = pbl_continuous_initialize(dev, pbl); if (err) goto err_free; } ibdev_dbg(&dev->ibdev, "user_pbl_created: user_pages[%u], continuous[%u]\n", hp_cnt, pbl->physically_continuous); return 0; err_free: kvfree(pbl->pbl_buf); return err; } static void pbl_destroy(struct efa_dev *dev, struct pbl_context *pbl) { if (pbl->physically_continuous) dma_unmap_single(&dev->pdev->dev, pbl->phys.continuous.dma_addr, pbl->pbl_buf_size_in_bytes, DMA_TO_DEVICE); else pbl_indirect_terminate(dev, pbl); kvfree(pbl->pbl_buf); } static int efa_create_inline_pbl(struct efa_dev *dev, struct efa_mr *mr, struct efa_com_reg_mr_params *params) { int err; params->inline_pbl = 1; err = umem_to_page_list(dev, mr->umem, params->pbl.inline_pbl_array, params->page_num, params->page_shift); if (err) return err; ibdev_dbg(&dev->ibdev, "inline_pbl_array - pages[%u]\n", params->page_num); return 0; } static int efa_create_pbl(struct efa_dev *dev, struct pbl_context *pbl, struct efa_mr *mr, struct efa_com_reg_mr_params *params) { int err; err = pbl_create(dev, pbl, mr->umem, params->page_num, params->page_shift); if (err) { ibdev_dbg(&dev->ibdev, "Failed to create pbl[%d]\n", err); return err; } params->inline_pbl = 0; params->indirect = !pbl->physically_continuous; if (pbl->physically_continuous) { params->pbl.pbl.length = pbl->pbl_buf_size_in_bytes; efa_com_set_dma_addr(pbl->phys.continuous.dma_addr, ¶ms->pbl.pbl.address.mem_addr_high, ¶ms->pbl.pbl.address.mem_addr_low); } else { params->pbl.pbl.length = pbl->phys.indirect.chunk_list.chunks[0].length; efa_com_set_dma_addr(pbl->phys.indirect.chunk_list.chunks[0].dma_addr, ¶ms->pbl.pbl.address.mem_addr_high, ¶ms->pbl.pbl.address.mem_addr_low); } return 0; } static struct efa_mr *efa_alloc_mr(struct ib_pd *ibpd, int access_flags, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibpd->device); int supp_access_flags; struct efa_mr *mr; if (udata && udata->inlen && !ib_is_udata_cleared(udata, 0, sizeof(udata->inlen))) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params, udata not cleared\n"); return ERR_PTR(-EINVAL); } supp_access_flags = IB_ACCESS_LOCAL_WRITE | (EFA_DEV_CAP(dev, RDMA_READ) ? IB_ACCESS_REMOTE_READ : 0) | (EFA_DEV_CAP(dev, RDMA_WRITE) ? IB_ACCESS_REMOTE_WRITE : 0); access_flags &= ~IB_ACCESS_OPTIONAL; if (access_flags & ~supp_access_flags) { ibdev_dbg(&dev->ibdev, "Unsupported access flags[%#x], supported[%#x]\n", access_flags, supp_access_flags); return ERR_PTR(-EOPNOTSUPP); } mr = kzalloc(sizeof(*mr), GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); return mr; } static int efa_register_mr(struct ib_pd *ibpd, struct efa_mr *mr, u64 start, u64 length, u64 virt_addr, int access_flags) { struct efa_dev *dev = to_edev(ibpd->device); struct efa_com_reg_mr_params params = {}; struct efa_com_reg_mr_result result = {}; struct pbl_context pbl; unsigned int pg_sz; int inline_size; int err; params.pd = to_epd(ibpd)->pdn; params.iova = virt_addr; params.mr_length_in_bytes = length; params.permissions = access_flags; pg_sz = ib_umem_find_best_pgsz(mr->umem, dev->dev_attr.page_size_cap, virt_addr); if (!pg_sz) { ibdev_dbg(&dev->ibdev, "Failed to find a suitable page size in page_size_cap %#llx\n", dev->dev_attr.page_size_cap); return -EOPNOTSUPP; } params.page_shift = order_base_2(pg_sz); params.page_num = ib_umem_num_dma_blocks(mr->umem, pg_sz); ibdev_dbg(&dev->ibdev, "start %#llx length %#llx params.page_shift %u params.page_num %u\n", start, length, params.page_shift, params.page_num); inline_size = ARRAY_SIZE(params.pbl.inline_pbl_array); if (params.page_num <= inline_size) { err = efa_create_inline_pbl(dev, mr, ¶ms); if (err) return err; err = efa_com_register_mr(&dev->edev, ¶ms, &result); if (err) return err; } else { err = efa_create_pbl(dev, &pbl, mr, ¶ms); if (err) return err; err = efa_com_register_mr(&dev->edev, ¶ms, &result); pbl_destroy(dev, &pbl); if (err) return err; } mr->ibmr.lkey = result.l_key; mr->ibmr.rkey = result.r_key; mr->ibmr.length = length; mr->ic_info.recv_ic_id = result.ic_info.recv_ic_id; mr->ic_info.rdma_read_ic_id = result.ic_info.rdma_read_ic_id; mr->ic_info.rdma_recv_ic_id = result.ic_info.rdma_recv_ic_id; mr->ic_info.recv_ic_id_valid = result.ic_info.recv_ic_id_valid; mr->ic_info.rdma_read_ic_id_valid = result.ic_info.rdma_read_ic_id_valid; mr->ic_info.rdma_recv_ic_id_valid = result.ic_info.rdma_recv_ic_id_valid; ibdev_dbg(&dev->ibdev, "Registered mr[%d]\n", mr->ibmr.lkey); return 0; } struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start, u64 length, u64 virt_addr, int fd, int access_flags, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibpd->device); struct ib_umem_dmabuf *umem_dmabuf; struct efa_mr *mr; int err; mr = efa_alloc_mr(ibpd, access_flags, udata); if (IS_ERR(mr)) { err = PTR_ERR(mr); goto err_out; } umem_dmabuf = ib_umem_dmabuf_get_pinned(ibpd->device, start, length, fd, access_flags); if (IS_ERR(umem_dmabuf)) { err = PTR_ERR(umem_dmabuf); ibdev_dbg(&dev->ibdev, "Failed to get dmabuf umem[%d]\n", err); goto err_free; } mr->umem = &umem_dmabuf->umem; err = efa_register_mr(ibpd, mr, start, length, virt_addr, access_flags); if (err) goto err_release; return &mr->ibmr; err_release: ib_umem_release(mr->umem); err_free: kfree(mr); err_out: atomic64_inc(&dev->stats.reg_mr_err); return ERR_PTR(err); } struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, u64 virt_addr, int access_flags, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibpd->device); struct efa_mr *mr; int err; mr = efa_alloc_mr(ibpd, access_flags, udata); if (IS_ERR(mr)) { err = PTR_ERR(mr); goto err_out; } mr->umem = ib_umem_get(ibpd->device, start, length, access_flags); if (IS_ERR(mr->umem)) { err = PTR_ERR(mr->umem); ibdev_dbg(&dev->ibdev, "Failed to pin and map user space memory[%d]\n", err); goto err_free; } err = efa_register_mr(ibpd, mr, start, length, virt_addr, access_flags); if (err) goto err_release; return &mr->ibmr; err_release: ib_umem_release(mr->umem); err_free: kfree(mr); err_out: atomic64_inc(&dev->stats.reg_mr_err); return ERR_PTR(err); } static int UVERBS_HANDLER(EFA_IB_METHOD_MR_QUERY)(struct uverbs_attr_bundle *attrs) { struct ib_mr *ibmr = uverbs_attr_get_obj(attrs, EFA_IB_ATTR_QUERY_MR_HANDLE); struct efa_mr *mr = to_emr(ibmr); u16 ic_id_validity = 0; int ret; ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID, &mr->ic_info.recv_ic_id, sizeof(mr->ic_info.recv_ic_id)); if (ret) return ret; ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID, &mr->ic_info.rdma_read_ic_id, sizeof(mr->ic_info.rdma_read_ic_id)); if (ret) return ret; ret = uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID, &mr->ic_info.rdma_recv_ic_id, sizeof(mr->ic_info.rdma_recv_ic_id)); if (ret) return ret; if (mr->ic_info.recv_ic_id_valid) ic_id_validity |= EFA_QUERY_MR_VALIDITY_RECV_IC_ID; if (mr->ic_info.rdma_read_ic_id_valid) ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_READ_IC_ID; if (mr->ic_info.rdma_recv_ic_id_valid) ic_id_validity |= EFA_QUERY_MR_VALIDITY_RDMA_RECV_IC_ID; return uverbs_copy_to(attrs, EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY, &ic_id_validity, sizeof(ic_id_validity)); } int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) { struct efa_dev *dev = to_edev(ibmr->device); struct efa_com_dereg_mr_params params; struct efa_mr *mr = to_emr(ibmr); int err; ibdev_dbg(&dev->ibdev, "Deregister mr[%d]\n", ibmr->lkey); params.l_key = mr->ibmr.lkey; err = efa_com_dereg_mr(&dev->edev, ¶ms); if (err) return err; ib_umem_release(mr->umem); kfree(mr); return 0; } int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr attr; int err; err = ib_query_port(ibdev, port_num, &attr); if (err) { ibdev_dbg(ibdev, "Couldn't query port err[%d]\n", err); return err; } immutable->pkey_tbl_len = attr.pkey_tbl_len; immutable->gid_tbl_len = attr.gid_tbl_len; return 0; } static int efa_dealloc_uar(struct efa_dev *dev, u16 uarn) { struct efa_com_dealloc_uar_params params = { .uarn = uarn, }; return efa_com_dealloc_uar(&dev->edev, ¶ms); } #define EFA_CHECK_USER_COMP(_dev, _comp_mask, _attr, _mask, _attr_str) \ (_attr_str = (!(_dev)->dev_attr._attr || ((_comp_mask) & (_mask))) ? \ NULL : #_attr) static int efa_user_comp_handshake(const struct ib_ucontext *ibucontext, const struct efa_ibv_alloc_ucontext_cmd *cmd) { struct efa_dev *dev = to_edev(ibucontext->device); char *attr_str; if (EFA_CHECK_USER_COMP(dev, cmd->comp_mask, max_tx_batch, EFA_ALLOC_UCONTEXT_CMD_COMP_TX_BATCH, attr_str)) goto err; if (EFA_CHECK_USER_COMP(dev, cmd->comp_mask, min_sq_depth, EFA_ALLOC_UCONTEXT_CMD_COMP_MIN_SQ_WR, attr_str)) goto err; return 0; err: ibdev_dbg(&dev->ibdev, "Userspace handshake failed for %s attribute\n", attr_str); return -EOPNOTSUPP; } int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata) { struct efa_ucontext *ucontext = to_eucontext(ibucontext); struct efa_dev *dev = to_edev(ibucontext->device); struct efa_ibv_alloc_ucontext_resp resp = {}; struct efa_ibv_alloc_ucontext_cmd cmd = {}; struct efa_com_alloc_uar_result result; int err; /* * it's fine if the driver does not know all request fields, * we will ack input fields in our response. */ err = ib_copy_from_udata(&cmd, udata, min(sizeof(cmd), udata->inlen)); if (err) { ibdev_dbg(&dev->ibdev, "Cannot copy udata for alloc_ucontext\n"); goto err_out; } err = efa_user_comp_handshake(ibucontext, &cmd); if (err) goto err_out; err = efa_com_alloc_uar(&dev->edev, &result); if (err) goto err_out; ucontext->uarn = result.uarn; resp.cmds_supp_udata_mask |= EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE; resp.cmds_supp_udata_mask |= EFA_USER_CMDS_SUPP_UDATA_CREATE_AH; resp.sub_cqs_per_cq = dev->dev_attr.sub_cqs_per_cq; resp.inline_buf_size = dev->dev_attr.inline_buf_size; resp.max_llq_size = dev->dev_attr.max_llq_size; resp.max_tx_batch = dev->dev_attr.max_tx_batch; resp.min_sq_wr = dev->dev_attr.min_sq_depth; err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) goto err_dealloc_uar; return 0; err_dealloc_uar: efa_dealloc_uar(dev, result.uarn); err_out: atomic64_inc(&dev->stats.alloc_ucontext_err); return err; } void efa_dealloc_ucontext(struct ib_ucontext *ibucontext) { struct efa_ucontext *ucontext = to_eucontext(ibucontext); struct efa_dev *dev = to_edev(ibucontext->device); efa_dealloc_uar(dev, ucontext->uarn); } void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry) { struct efa_user_mmap_entry *entry = to_emmap(rdma_entry); kfree(entry); } static int __efa_mmap(struct efa_dev *dev, struct efa_ucontext *ucontext, struct vm_area_struct *vma) { struct rdma_user_mmap_entry *rdma_entry; struct efa_user_mmap_entry *entry; unsigned long va; int err = 0; u64 pfn; rdma_entry = rdma_user_mmap_entry_get(&ucontext->ibucontext, vma); if (!rdma_entry) { ibdev_dbg(&dev->ibdev, "pgoff[%#lx] does not have valid entry\n", vma->vm_pgoff); atomic64_inc(&dev->stats.mmap_err); return -EINVAL; } entry = to_emmap(rdma_entry); ibdev_dbg(&dev->ibdev, "Mapping address[%#llx], length[%#zx], mmap_flag[%d]\n", entry->address, rdma_entry->npages * PAGE_SIZE, entry->mmap_flag); pfn = entry->address >> PAGE_SHIFT; switch (entry->mmap_flag) { case EFA_MMAP_IO_NC: err = rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn, entry->rdma_entry.npages * PAGE_SIZE, pgprot_noncached(vma->vm_page_prot), rdma_entry); break; case EFA_MMAP_IO_WC: err = rdma_user_mmap_io(&ucontext->ibucontext, vma, pfn, entry->rdma_entry.npages * PAGE_SIZE, pgprot_writecombine(vma->vm_page_prot), rdma_entry); break; case EFA_MMAP_DMA_PAGE: for (va = vma->vm_start; va < vma->vm_end; va += PAGE_SIZE, pfn++) { err = vm_insert_page(vma, va, pfn_to_page(pfn)); if (err) break; } break; default: err = -EINVAL; } if (err) { ibdev_dbg( &dev->ibdev, "Couldn't mmap address[%#llx] length[%#zx] mmap_flag[%d] err[%d]\n", entry->address, rdma_entry->npages * PAGE_SIZE, entry->mmap_flag, err); atomic64_inc(&dev->stats.mmap_err); } rdma_user_mmap_entry_put(rdma_entry); return err; } int efa_mmap(struct ib_ucontext *ibucontext, struct vm_area_struct *vma) { struct efa_ucontext *ucontext = to_eucontext(ibucontext); struct efa_dev *dev = to_edev(ibucontext->device); size_t length = vma->vm_end - vma->vm_start; ibdev_dbg(&dev->ibdev, "start %#lx, end %#lx, length = %#zx, pgoff = %#lx\n", vma->vm_start, vma->vm_end, length, vma->vm_pgoff); return __efa_mmap(dev, ucontext, vma); } static int efa_ah_destroy(struct efa_dev *dev, struct efa_ah *ah) { struct efa_com_destroy_ah_params params = { .ah = ah->ah, .pdn = to_epd(ah->ibah.pd)->pdn, }; return efa_com_destroy_ah(&dev->edev, ¶ms); } int efa_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, struct ib_udata *udata) { struct rdma_ah_attr *ah_attr = init_attr->ah_attr; struct efa_dev *dev = to_edev(ibah->device); struct efa_com_create_ah_params params = {}; struct efa_ibv_create_ah_resp resp = {}; struct efa_com_create_ah_result result; struct efa_ah *ah = to_eah(ibah); int err; if (!(init_attr->flags & RDMA_CREATE_AH_SLEEPABLE)) { ibdev_dbg(&dev->ibdev, "Create address handle is not supported in atomic context\n"); err = -EOPNOTSUPP; goto err_out; } if (udata->inlen && !ib_is_udata_cleared(udata, 0, udata->inlen)) { ibdev_dbg(&dev->ibdev, "Incompatible ABI params\n"); err = -EINVAL; goto err_out; } memcpy(params.dest_addr, ah_attr->grh.dgid.raw, sizeof(params.dest_addr)); params.pdn = to_epd(ibah->pd)->pdn; err = efa_com_create_ah(&dev->edev, ¶ms, &result); if (err) goto err_out; memcpy(ah->id, ah_attr->grh.dgid.raw, sizeof(ah->id)); ah->ah = result.ah; resp.efa_address_handle = result.ah; if (udata->outlen) { err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (err) { ibdev_dbg(&dev->ibdev, "Failed to copy udata for create_ah response\n"); goto err_destroy_ah; } } ibdev_dbg(&dev->ibdev, "Created ah[%d]\n", ah->ah); return 0; err_destroy_ah: efa_ah_destroy(dev, ah); err_out: atomic64_inc(&dev->stats.create_ah_err); return err; } int efa_destroy_ah(struct ib_ah *ibah, u32 flags) { struct efa_dev *dev = to_edev(ibah->pd->device); struct efa_ah *ah = to_eah(ibah); ibdev_dbg(&dev->ibdev, "Destroy ah[%d]\n", ah->ah); if (!(flags & RDMA_DESTROY_AH_SLEEPABLE)) { ibdev_dbg(&dev->ibdev, "Destroy address handle is not supported in atomic context\n"); return -EOPNOTSUPP; } efa_ah_destroy(dev, ah); return 0; } struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num) { return rdma_alloc_hw_stats_struct(efa_port_stats_descs, ARRAY_SIZE(efa_port_stats_descs), RDMA_HW_STATS_DEFAULT_LIFESPAN); } struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev) { return rdma_alloc_hw_stats_struct(efa_device_stats_descs, ARRAY_SIZE(efa_device_stats_descs), RDMA_HW_STATS_DEFAULT_LIFESPAN); } static int efa_fill_device_stats(struct efa_dev *dev, struct rdma_hw_stats *stats) { struct efa_com_stats_admin *as = &dev->edev.aq.stats; struct efa_stats *s = &dev->stats; stats->value[EFA_SUBMITTED_CMDS] = atomic64_read(&as->submitted_cmd); stats->value[EFA_COMPLETED_CMDS] = atomic64_read(&as->completed_cmd); stats->value[EFA_CMDS_ERR] = atomic64_read(&as->cmd_err); stats->value[EFA_NO_COMPLETION_CMDS] = atomic64_read(&as->no_completion); stats->value[EFA_KEEP_ALIVE_RCVD] = atomic64_read(&s->keep_alive_rcvd); stats->value[EFA_ALLOC_PD_ERR] = atomic64_read(&s->alloc_pd_err); stats->value[EFA_CREATE_QP_ERR] = atomic64_read(&s->create_qp_err); stats->value[EFA_CREATE_CQ_ERR] = atomic64_read(&s->create_cq_err); stats->value[EFA_REG_MR_ERR] = atomic64_read(&s->reg_mr_err); stats->value[EFA_ALLOC_UCONTEXT_ERR] = atomic64_read(&s->alloc_ucontext_err); stats->value[EFA_CREATE_AH_ERR] = atomic64_read(&s->create_ah_err); stats->value[EFA_MMAP_ERR] = atomic64_read(&s->mmap_err); return ARRAY_SIZE(efa_device_stats_descs); } static int efa_fill_port_stats(struct efa_dev *dev, struct rdma_hw_stats *stats, u32 port_num) { struct efa_com_get_stats_params params = {}; union efa_com_get_stats_result result; struct efa_com_rdma_write_stats *rws; struct efa_com_rdma_read_stats *rrs; struct efa_com_messages_stats *ms; struct efa_com_basic_stats *bs; int err; params.scope = EFA_ADMIN_GET_STATS_SCOPE_ALL; params.type = EFA_ADMIN_GET_STATS_TYPE_BASIC; err = efa_com_get_stats(&dev->edev, ¶ms, &result); if (err) return err; bs = &result.basic_stats; stats->value[EFA_TX_BYTES] = bs->tx_bytes; stats->value[EFA_TX_PKTS] = bs->tx_pkts; stats->value[EFA_RX_BYTES] = bs->rx_bytes; stats->value[EFA_RX_PKTS] = bs->rx_pkts; stats->value[EFA_RX_DROPS] = bs->rx_drops; params.type = EFA_ADMIN_GET_STATS_TYPE_MESSAGES; err = efa_com_get_stats(&dev->edev, ¶ms, &result); if (err) return err; ms = &result.messages_stats; stats->value[EFA_SEND_BYTES] = ms->send_bytes; stats->value[EFA_SEND_WRS] = ms->send_wrs; stats->value[EFA_RECV_BYTES] = ms->recv_bytes; stats->value[EFA_RECV_WRS] = ms->recv_wrs; params.type = EFA_ADMIN_GET_STATS_TYPE_RDMA_READ; err = efa_com_get_stats(&dev->edev, ¶ms, &result); if (err) return err; rrs = &result.rdma_read_stats; stats->value[EFA_RDMA_READ_WRS] = rrs->read_wrs; stats->value[EFA_RDMA_READ_BYTES] = rrs->read_bytes; stats->value[EFA_RDMA_READ_WR_ERR] = rrs->read_wr_err; stats->value[EFA_RDMA_READ_RESP_BYTES] = rrs->read_resp_bytes; if (EFA_DEV_CAP(dev, RDMA_WRITE)) { params.type = EFA_ADMIN_GET_STATS_TYPE_RDMA_WRITE; err = efa_com_get_stats(&dev->edev, ¶ms, &result); if (err) return err; rws = &result.rdma_write_stats; stats->value[EFA_RDMA_WRITE_WRS] = rws->write_wrs; stats->value[EFA_RDMA_WRITE_BYTES] = rws->write_bytes; stats->value[EFA_RDMA_WRITE_WR_ERR] = rws->write_wr_err; stats->value[EFA_RDMA_WRITE_RECV_BYTES] = rws->write_recv_bytes; } return ARRAY_SIZE(efa_port_stats_descs); } int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, u32 port_num, int index) { if (port_num) return efa_fill_port_stats(to_edev(ibdev), stats, port_num); else return efa_fill_device_stats(to_edev(ibdev), stats); } enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, u32 port_num) { return IB_LINK_LAYER_UNSPECIFIED; } DECLARE_UVERBS_NAMED_METHOD(EFA_IB_METHOD_MR_QUERY, UVERBS_ATTR_IDR(EFA_IB_ATTR_QUERY_MR_HANDLE, UVERBS_OBJECT_MR, UVERBS_ACCESS_READ, UA_MANDATORY), UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY, UVERBS_ATTR_TYPE(u16), UA_MANDATORY), UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID, UVERBS_ATTR_TYPE(u16), UA_MANDATORY), UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID, UVERBS_ATTR_TYPE(u16), UA_MANDATORY), UVERBS_ATTR_PTR_OUT(EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID, UVERBS_ATTR_TYPE(u16), UA_MANDATORY)); ADD_UVERBS_METHODS(efa_mr, UVERBS_OBJECT_MR, &UVERBS_METHOD(EFA_IB_METHOD_MR_QUERY)); const struct uapi_definition efa_uapi_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_MR, &efa_mr), {}, };
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