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1988 lines
51 KiB
1988 lines
51 KiB
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
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/* |
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* Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved. |
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*/ |
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|
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#include <linux/vmalloc.h> |
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#include <linux/log2.h> |
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#include <rdma/ib_addr.h> |
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#include <rdma/ib_umem.h> |
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#include <rdma/ib_user_verbs.h> |
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#include <rdma/ib_verbs.h> |
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#include <rdma/uverbs_ioctl.h> |
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#include "efa.h" |
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enum { |
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EFA_MMAP_DMA_PAGE = 0, |
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EFA_MMAP_IO_WC, |
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EFA_MMAP_IO_NC, |
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}; |
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#define EFA_AENQ_ENABLED_GROUPS \ |
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(BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ |
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BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) |
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struct efa_user_mmap_entry { |
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struct rdma_user_mmap_entry rdma_entry; |
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u64 address; |
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u8 mmap_flag; |
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}; |
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#define EFA_DEFINE_STATS(op) \ |
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op(EFA_TX_BYTES, "tx_bytes") \ |
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op(EFA_TX_PKTS, "tx_pkts") \ |
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op(EFA_RX_BYTES, "rx_bytes") \ |
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op(EFA_RX_PKTS, "rx_pkts") \ |
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op(EFA_RX_DROPS, "rx_drops") \ |
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op(EFA_SEND_BYTES, "send_bytes") \ |
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op(EFA_SEND_WRS, "send_wrs") \ |
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op(EFA_RECV_BYTES, "recv_bytes") \ |
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op(EFA_RECV_WRS, "recv_wrs") \ |
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op(EFA_RDMA_READ_WRS, "rdma_read_wrs") \ |
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op(EFA_RDMA_READ_BYTES, "rdma_read_bytes") \ |
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op(EFA_RDMA_READ_WR_ERR, "rdma_read_wr_err") \ |
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op(EFA_RDMA_READ_RESP_BYTES, "rdma_read_resp_bytes") \ |
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op(EFA_SUBMITTED_CMDS, "submitted_cmds") \ |
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op(EFA_COMPLETED_CMDS, "completed_cmds") \ |
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op(EFA_CMDS_ERR, "cmds_err") \ |
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op(EFA_NO_COMPLETION_CMDS, "no_completion_cmds") \ |
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op(EFA_KEEP_ALIVE_RCVD, "keep_alive_rcvd") \ |
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op(EFA_ALLOC_PD_ERR, "alloc_pd_err") \ |
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op(EFA_CREATE_QP_ERR, "create_qp_err") \ |
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op(EFA_CREATE_CQ_ERR, "create_cq_err") \ |
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op(EFA_REG_MR_ERR, "reg_mr_err") \ |
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op(EFA_ALLOC_UCONTEXT_ERR, "alloc_ucontext_err") \ |
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op(EFA_CREATE_AH_ERR, "create_ah_err") \ |
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op(EFA_MMAP_ERR, "mmap_err") |
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#define EFA_STATS_ENUM(ename, name) ename, |
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#define EFA_STATS_STR(ename, name) [ename] = name, |
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enum efa_hw_stats { |
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EFA_DEFINE_STATS(EFA_STATS_ENUM) |
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}; |
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static const char *const efa_stats_names[] = { |
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EFA_DEFINE_STATS(EFA_STATS_STR) |
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}; |
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#define EFA_CHUNK_PAYLOAD_SHIFT 12 |
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#define EFA_CHUNK_PAYLOAD_SIZE BIT(EFA_CHUNK_PAYLOAD_SHIFT) |
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#define EFA_CHUNK_PAYLOAD_PTR_SIZE 8 |
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#define EFA_CHUNK_SHIFT 12 |
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#define EFA_CHUNK_SIZE BIT(EFA_CHUNK_SHIFT) |
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#define EFA_CHUNK_PTR_SIZE sizeof(struct efa_com_ctrl_buff_info) |
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#define EFA_PTRS_PER_CHUNK \ |
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((EFA_CHUNK_SIZE - EFA_CHUNK_PTR_SIZE) / EFA_CHUNK_PAYLOAD_PTR_SIZE) |
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#define EFA_CHUNK_USED_SIZE \ |
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((EFA_PTRS_PER_CHUNK * EFA_CHUNK_PAYLOAD_PTR_SIZE) + EFA_CHUNK_PTR_SIZE) |
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struct pbl_chunk { |
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dma_addr_t dma_addr; |
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u64 *buf; |
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u32 length; |
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}; |
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struct pbl_chunk_list { |
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struct pbl_chunk *chunks; |
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unsigned int size; |
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}; |
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struct pbl_context { |
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union { |
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struct { |
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dma_addr_t dma_addr; |
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} continuous; |
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struct { |
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u32 pbl_buf_size_in_pages; |
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struct scatterlist *sgl; |
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int sg_dma_cnt; |
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struct pbl_chunk_list chunk_list; |
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} indirect; |
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} phys; |
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u64 *pbl_buf; |
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u32 pbl_buf_size_in_bytes; |
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u8 physically_continuous; |
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}; |
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static inline struct efa_dev *to_edev(struct ib_device *ibdev) |
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{ |
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return container_of(ibdev, struct efa_dev, ibdev); |
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} |
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static inline struct efa_ucontext *to_eucontext(struct ib_ucontext *ibucontext) |
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{ |
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return container_of(ibucontext, struct efa_ucontext, ibucontext); |
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} |
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static inline struct efa_pd *to_epd(struct ib_pd *ibpd) |
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{ |
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return container_of(ibpd, struct efa_pd, ibpd); |
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} |
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static inline struct efa_mr *to_emr(struct ib_mr *ibmr) |
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{ |
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return container_of(ibmr, struct efa_mr, ibmr); |
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} |
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static inline struct efa_qp *to_eqp(struct ib_qp *ibqp) |
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{ |
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return container_of(ibqp, struct efa_qp, ibqp); |
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} |
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static inline struct efa_cq *to_ecq(struct ib_cq *ibcq) |
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{ |
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return container_of(ibcq, struct efa_cq, ibcq); |
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} |
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static inline struct efa_ah *to_eah(struct ib_ah *ibah) |
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{ |
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return container_of(ibah, struct efa_ah, ibah); |
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} |
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static inline struct efa_user_mmap_entry * |
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to_emmap(struct rdma_user_mmap_entry *rdma_entry) |
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{ |
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return container_of(rdma_entry, struct efa_user_mmap_entry, rdma_entry); |
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} |
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#define EFA_DEV_CAP(dev, cap) \ |
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((dev)->dev_attr.device_caps & \ |
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EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_##cap##_MASK) |
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#define is_reserved_cleared(reserved) \ |
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!memchr_inv(reserved, 0, sizeof(reserved)) |
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static void *efa_zalloc_mapped(struct efa_dev *dev, dma_addr_t *dma_addr, |
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size_t size, enum dma_data_direction dir) |
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{ |
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void *addr; |
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addr = alloc_pages_exact(size, GFP_KERNEL | __GFP_ZERO); |
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if (!addr) |
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return NULL; |
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*dma_addr = dma_map_single(&dev->pdev->dev, addr, size, dir); |
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if (dma_mapping_error(&dev->pdev->dev, *dma_addr)) { |
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ibdev_err(&dev->ibdev, "Failed to map DMA address\n"); |
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free_pages_exact(addr, size); |
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return NULL; |
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} |
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return addr; |
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} |
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static void efa_free_mapped(struct efa_dev *dev, void *cpu_addr, |
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dma_addr_t dma_addr, |
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size_t size, enum dma_data_direction dir) |
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{ |
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dma_unmap_single(&dev->pdev->dev, dma_addr, size, dir); |
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free_pages_exact(cpu_addr, size); |
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} |
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int efa_query_device(struct ib_device *ibdev, |
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struct ib_device_attr *props, |
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struct ib_udata *udata) |
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{ |
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struct efa_com_get_device_attr_result *dev_attr; |
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struct efa_ibv_ex_query_device_resp resp = {}; |
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struct efa_dev *dev = to_edev(ibdev); |
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int err; |
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if (udata && udata->inlen && |
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!ib_is_udata_cleared(udata, 0, udata->inlen)) { |
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ibdev_dbg(ibdev, |
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"Incompatible ABI params, udata not cleared\n"); |
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return -EINVAL; |
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} |
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dev_attr = &dev->dev_attr; |
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memset(props, 0, sizeof(*props)); |
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props->max_mr_size = dev_attr->max_mr_pages * PAGE_SIZE; |
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props->page_size_cap = dev_attr->page_size_cap; |
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props->vendor_id = dev->pdev->vendor; |
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props->vendor_part_id = dev->pdev->device; |
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props->hw_ver = dev->pdev->subsystem_device; |
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props->max_qp = dev_attr->max_qp; |
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props->max_cq = dev_attr->max_cq; |
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props->max_pd = dev_attr->max_pd; |
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props->max_mr = dev_attr->max_mr; |
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props->max_ah = dev_attr->max_ah; |
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props->max_cqe = dev_attr->max_cq_depth; |
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props->max_qp_wr = min_t(u32, dev_attr->max_sq_depth, |
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dev_attr->max_rq_depth); |
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props->max_send_sge = dev_attr->max_sq_sge; |
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props->max_recv_sge = dev_attr->max_rq_sge; |
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props->max_sge_rd = dev_attr->max_wr_rdma_sge; |
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props->max_pkeys = 1; |
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if (udata && udata->outlen) { |
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resp.max_sq_sge = dev_attr->max_sq_sge; |
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resp.max_rq_sge = dev_attr->max_rq_sge; |
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resp.max_sq_wr = dev_attr->max_sq_depth; |
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resp.max_rq_wr = dev_attr->max_rq_depth; |
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resp.max_rdma_size = dev_attr->max_rdma_size; |
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if (EFA_DEV_CAP(dev, RDMA_READ)) |
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resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RDMA_READ; |
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if (EFA_DEV_CAP(dev, RNR_RETRY)) |
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resp.device_caps |= EFA_QUERY_DEVICE_CAPS_RNR_RETRY; |
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err = ib_copy_to_udata(udata, &resp, |
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min(sizeof(resp), udata->outlen)); |
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if (err) { |
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ibdev_dbg(ibdev, |
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"Failed to copy udata for query_device\n"); |
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return err; |
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} |
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} |
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return 0; |
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} |
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int efa_query_port(struct ib_device *ibdev, u8 port, |
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struct ib_port_attr *props) |
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{ |
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struct efa_dev *dev = to_edev(ibdev); |
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props->lmc = 1; |
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props->state = IB_PORT_ACTIVE; |
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props->phys_state = IB_PORT_PHYS_STATE_LINK_UP; |
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props->gid_tbl_len = 1; |
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props->pkey_tbl_len = 1; |
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props->active_speed = IB_SPEED_EDR; |
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props->active_width = IB_WIDTH_4X; |
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props->max_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); |
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props->active_mtu = ib_mtu_int_to_enum(dev->dev_attr.mtu); |
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props->max_msg_sz = dev->dev_attr.mtu; |
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props->max_vl_num = 1; |
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return 0; |
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} |
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int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, |
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int qp_attr_mask, |
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struct ib_qp_init_attr *qp_init_attr) |
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{ |
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struct efa_dev *dev = to_edev(ibqp->device); |
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struct efa_com_query_qp_params params = {}; |
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struct efa_com_query_qp_result result; |
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struct efa_qp *qp = to_eqp(ibqp); |
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int err; |
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#define EFA_QUERY_QP_SUPP_MASK \ |
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(IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT | \ |
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IB_QP_QKEY | IB_QP_SQ_PSN | IB_QP_CAP | IB_QP_RNR_RETRY) |
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if (qp_attr_mask & ~EFA_QUERY_QP_SUPP_MASK) { |
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ibdev_dbg(&dev->ibdev, |
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"Unsupported qp_attr_mask[%#x] supported[%#x]\n", |
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qp_attr_mask, EFA_QUERY_QP_SUPP_MASK); |
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return -EOPNOTSUPP; |
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} |
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memset(qp_attr, 0, sizeof(*qp_attr)); |
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memset(qp_init_attr, 0, sizeof(*qp_init_attr)); |
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params.qp_handle = qp->qp_handle; |
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err = efa_com_query_qp(&dev->edev, ¶ms, &result); |
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if (err) |
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return err; |
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qp_attr->qp_state = result.qp_state; |
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qp_attr->qkey = result.qkey; |
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qp_attr->sq_psn = result.sq_psn; |
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qp_attr->sq_draining = result.sq_draining; |
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qp_attr->port_num = 1; |
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qp_attr->rnr_retry = result.rnr_retry; |
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qp_attr->cap.max_send_wr = qp->max_send_wr; |
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qp_attr->cap.max_recv_wr = qp->max_recv_wr; |
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qp_attr->cap.max_send_sge = qp->max_send_sge; |
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qp_attr->cap.max_recv_sge = qp->max_recv_sge; |
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qp_attr->cap.max_inline_data = qp->max_inline_data; |
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qp_init_attr->qp_type = ibqp->qp_type; |
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qp_init_attr->recv_cq = ibqp->recv_cq; |
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qp_init_attr->send_cq = ibqp->send_cq; |
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qp_init_attr->qp_context = ibqp->qp_context; |
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qp_init_attr->cap = qp_attr->cap; |
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return 0; |
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} |
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int efa_query_gid(struct ib_device *ibdev, u8 port, int index, |
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union ib_gid *gid) |
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{ |
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struct efa_dev *dev = to_edev(ibdev); |
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memcpy(gid->raw, dev->dev_attr.addr, sizeof(dev->dev_attr.addr)); |
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return 0; |
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} |
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int efa_query_pkey(struct ib_device *ibdev, u8 port, u16 index, |
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u16 *pkey) |
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{ |
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if (index > 0) |
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return -EINVAL; |
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*pkey = 0xffff; |
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return 0; |
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} |
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static int efa_pd_dealloc(struct efa_dev *dev, u16 pdn) |
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{ |
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struct efa_com_dealloc_pd_params params = { |
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.pdn = pdn, |
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}; |
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return efa_com_dealloc_pd(&dev->edev, ¶ms); |
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} |
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int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) |
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{ |
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struct efa_dev *dev = to_edev(ibpd->device); |
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struct efa_ibv_alloc_pd_resp resp = {}; |
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struct efa_com_alloc_pd_result result; |
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struct efa_pd *pd = to_epd(ibpd); |
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int err; |
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if (udata->inlen && |
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!ib_is_udata_cleared(udata, 0, udata->inlen)) { |
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ibdev_dbg(&dev->ibdev, |
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"Incompatible ABI params, udata not cleared\n"); |
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err = -EINVAL; |
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goto err_out; |
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} |
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err = efa_com_alloc_pd(&dev->edev, &result); |
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if (err) |
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goto err_out; |
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pd->pdn = result.pdn; |
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resp.pdn = result.pdn; |
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if (udata->outlen) { |
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err = ib_copy_to_udata(udata, &resp, |
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min(sizeof(resp), udata->outlen)); |
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if (err) { |
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ibdev_dbg(&dev->ibdev, |
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"Failed to copy udata for alloc_pd\n"); |
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goto err_dealloc_pd; |
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} |
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} |
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ibdev_dbg(&dev->ibdev, "Allocated pd[%d]\n", pd->pdn); |
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return 0; |
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err_dealloc_pd: |
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efa_pd_dealloc(dev, result.pdn); |
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err_out: |
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atomic64_inc(&dev->stats.alloc_pd_err); |
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return err; |
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} |
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int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) |
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{ |
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struct efa_dev *dev = to_edev(ibpd->device); |
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struct efa_pd *pd = to_epd(ibpd); |
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ibdev_dbg(&dev->ibdev, "Dealloc pd[%d]\n", pd->pdn); |
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efa_pd_dealloc(dev, pd->pdn); |
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return 0; |
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} |
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static int efa_destroy_qp_handle(struct efa_dev *dev, u32 qp_handle) |
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{ |
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struct efa_com_destroy_qp_params params = { .qp_handle = qp_handle }; |
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return efa_com_destroy_qp(&dev->edev, ¶ms); |
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} |
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static void efa_qp_user_mmap_entries_remove(struct efa_qp *qp) |
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{ |
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rdma_user_mmap_entry_remove(qp->rq_mmap_entry); |
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rdma_user_mmap_entry_remove(qp->rq_db_mmap_entry); |
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rdma_user_mmap_entry_remove(qp->llq_desc_mmap_entry); |
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rdma_user_mmap_entry_remove(qp->sq_db_mmap_entry); |
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} |
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int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) |
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{ |
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struct efa_dev *dev = to_edev(ibqp->pd->device); |
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struct efa_qp *qp = to_eqp(ibqp); |
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int err; |
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ibdev_dbg(&dev->ibdev, "Destroy qp[%u]\n", ibqp->qp_num); |
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efa_qp_user_mmap_entries_remove(qp); |
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err = efa_destroy_qp_handle(dev, qp->qp_handle); |
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if (err) |
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return err; |
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if (qp->rq_cpu_addr) { |
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ibdev_dbg(&dev->ibdev, |
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"qp->cpu_addr[0x%p] freed: size[%lu], dma[%pad]\n", |
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qp->rq_cpu_addr, qp->rq_size, |
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&qp->rq_dma_addr); |
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efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr, |
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qp->rq_size, DMA_TO_DEVICE); |
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} |
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kfree(qp); |
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return 0; |
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} |
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static struct rdma_user_mmap_entry* |
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efa_user_mmap_entry_insert(struct ib_ucontext *ucontext, |
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u64 address, size_t length, |
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u8 mmap_flag, u64 *offset) |
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{ |
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struct efa_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
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int err; |
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if (!entry) |
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return NULL; |
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entry->address = address; |
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entry->mmap_flag = mmap_flag; |
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err = rdma_user_mmap_entry_insert(ucontext, &entry->rdma_entry, |
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length); |
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if (err) { |
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kfree(entry); |
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return NULL; |
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} |
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*offset = rdma_user_mmap_get_offset(&entry->rdma_entry); |
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return &entry->rdma_entry; |
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} |
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static int qp_mmap_entries_setup(struct efa_qp *qp, |
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struct efa_dev *dev, |
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struct efa_ucontext *ucontext, |
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struct efa_com_create_qp_params *params, |
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struct efa_ibv_create_qp_resp *resp) |
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{ |
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size_t length; |
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u64 address; |
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address = dev->db_bar_addr + resp->sq_db_offset; |
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qp->sq_db_mmap_entry = |
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efa_user_mmap_entry_insert(&ucontext->ibucontext, |
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address, |
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PAGE_SIZE, EFA_MMAP_IO_NC, |
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&resp->sq_db_mmap_key); |
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if (!qp->sq_db_mmap_entry) |
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return -ENOMEM; |
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resp->sq_db_offset &= ~PAGE_MASK; |
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address = dev->mem_bar_addr + resp->llq_desc_offset; |
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length = PAGE_ALIGN(params->sq_ring_size_in_bytes + |
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(resp->llq_desc_offset & ~PAGE_MASK)); |
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qp->llq_desc_mmap_entry = |
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efa_user_mmap_entry_insert(&ucontext->ibucontext, |
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address, length, |
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EFA_MMAP_IO_WC, |
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&resp->llq_desc_mmap_key); |
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if (!qp->llq_desc_mmap_entry) |
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goto err_remove_mmap; |
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resp->llq_desc_offset &= ~PAGE_MASK; |
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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; |
|
} |
|
|
|
struct ib_qp *efa_create_qp(struct ib_pd *ibpd, |
|
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(ibpd->device); |
|
struct efa_ibv_create_qp_resp resp = {}; |
|
struct efa_ibv_create_qp cmd = {}; |
|
struct efa_ucontext *ucontext; |
|
struct efa_qp *qp; |
|
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) { |
|
ibdev_dbg(&dev->ibdev, |
|
"Incompatible ABI params, unknown fields in udata\n"); |
|
err = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
|
if (!qp) { |
|
err = -ENOMEM; |
|
goto err_out; |
|
} |
|
|
|
create_qp_params.uarn = ucontext->uarn; |
|
create_qp_params.pd = to_epd(ibpd)->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_free_qp; |
|
} |
|
|
|
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_free_qp; |
|
} |
|
|
|
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; |
|
} |
|
|
|
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->ibqp.qp_type = init_attr->qp_type; |
|
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 &qp->ibqp; |
|
|
|
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_free_qp: |
|
kfree(qp); |
|
err_out: |
|
atomic64_inc(&dev->stats.create_qp_err); |
|
return ERR_PTR(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); |
|
} |
|
|
|
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); |
|
|
|
rdma_user_mmap_entry_remove(cq->mmap_entry); |
|
efa_destroy_cq_idx(dev, cq->cq_idx); |
|
efa_free_mapped(dev, cq->cpu_addr, cq->dma_addr, cq->size, |
|
DMA_FROM_DEVICE); |
|
return 0; |
|
} |
|
|
|
static int cq_mmap_entries_setup(struct efa_dev *dev, struct efa_cq *cq, |
|
struct efa_ibv_create_cq_resp *resp) |
|
{ |
|
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; |
|
|
|
return 0; |
|
} |
|
|
|
int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, |
|
struct ib_udata *udata) |
|
{ |
|
struct efa_ucontext *ucontext = rdma_udata_to_drv_context( |
|
udata, struct efa_ucontext, ibucontext); |
|
struct efa_ibv_create_cq_resp resp = {}; |
|
struct efa_com_create_cq_params params; |
|
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; |
|
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_50)) { |
|
ibdev_dbg(ibdev, |
|
"Incompatible ABI params, unknown fields in udata\n"); |
|
err = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
if (!cmd.cq_entry_size) { |
|
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; |
|
err = efa_com_create_cq(&dev->edev, ¶ms, &result); |
|
if (err) |
|
goto err_free_mapped; |
|
|
|
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); |
|
if (err) { |
|
ibdev_dbg(ibdev, "Could not setup cq[%u] mmap entries\n", |
|
cq->cq_idx); |
|
goto err_destroy_cq; |
|
} |
|
|
|
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_remove_mmap; |
|
} |
|
} |
|
|
|
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_remove_mmap: |
|
rdma_user_mmap_entry_remove(cq->mmap_entry); |
|
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, PAGE_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; |
|
} |
|
|
|
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_com_reg_mr_params params = {}; |
|
struct efa_com_reg_mr_result result = {}; |
|
struct pbl_context pbl; |
|
int supp_access_flags; |
|
unsigned int pg_sz; |
|
struct efa_mr *mr; |
|
int inline_size; |
|
int err; |
|
|
|
if (udata && udata->inlen && |
|
!ib_is_udata_cleared(udata, 0, sizeof(udata->inlen))) { |
|
ibdev_dbg(&dev->ibdev, |
|
"Incompatible ABI params, udata not cleared\n"); |
|
err = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
supp_access_flags = |
|
IB_ACCESS_LOCAL_WRITE | |
|
(EFA_DEV_CAP(dev, RDMA_READ) ? IB_ACCESS_REMOTE_READ : 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); |
|
err = -EOPNOTSUPP; |
|
goto err_out; |
|
} |
|
|
|
mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
|
if (!mr) { |
|
err = -ENOMEM; |
|
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; |
|
} |
|
|
|
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) { |
|
err = -EOPNOTSUPP; |
|
ibdev_dbg(&dev->ibdev, "Failed to find a suitable page size in page_size_cap %#llx\n", |
|
dev->dev_attr.page_size_cap); |
|
goto err_unmap; |
|
} |
|
|
|
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) |
|
goto err_unmap; |
|
|
|
err = efa_com_register_mr(&dev->edev, ¶ms, &result); |
|
if (err) |
|
goto err_unmap; |
|
} else { |
|
err = efa_create_pbl(dev, &pbl, mr, ¶ms); |
|
if (err) |
|
goto err_unmap; |
|
|
|
err = efa_com_register_mr(&dev->edev, ¶ms, &result); |
|
pbl_destroy(dev, &pbl); |
|
|
|
if (err) |
|
goto err_unmap; |
|
} |
|
|
|
mr->ibmr.lkey = result.l_key; |
|
mr->ibmr.rkey = result.r_key; |
|
mr->ibmr.length = length; |
|
ibdev_dbg(&dev->ibdev, "Registered mr[%d]\n", mr->ibmr.lkey); |
|
|
|
return &mr->ibmr; |
|
|
|
err_unmap: |
|
ib_umem_release(mr->umem); |
|
err_free: |
|
kfree(mr); |
|
err_out: |
|
atomic64_inc(&dev->stats.reg_mr_err); |
|
return ERR_PTR(err); |
|
} |
|
|
|
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, u8 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_stats(struct ib_device *ibdev, u8 port_num) |
|
{ |
|
return rdma_alloc_hw_stats_struct(efa_stats_names, |
|
ARRAY_SIZE(efa_stats_names), |
|
RDMA_HW_STATS_DEFAULT_LIFESPAN); |
|
} |
|
|
|
int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, |
|
u8 port_num, int index) |
|
{ |
|
struct efa_com_get_stats_params params = {}; |
|
union efa_com_get_stats_result result; |
|
struct efa_dev *dev = to_edev(ibdev); |
|
struct efa_com_rdma_read_stats *rrs; |
|
struct efa_com_messages_stats *ms; |
|
struct efa_com_basic_stats *bs; |
|
struct efa_com_stats_admin *as; |
|
struct efa_stats *s; |
|
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; |
|
|
|
as = &dev->edev.aq.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); |
|
|
|
s = &dev->stats; |
|
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_stats_names); |
|
} |
|
|
|
enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, |
|
u8 port_num) |
|
{ |
|
return IB_LINK_LAYER_UNSPECIFIED; |
|
} |
|
|
|
|