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![Gal Pressman](/assets/img/avatar_default.png)
Implement a dmabuf importer for the EFA driver. As ODP is not supported, the pinned dmabuf are used to prevent the move_notify callback from being called. Link: https://lore.kernel.org/r/20211012120903.96933-4-galpress@amazon.com Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2127 lines
54 KiB
C
2127 lines
54 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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* Copyright 2018-2021 Amazon.com, Inc. or its affiliates. All rights reserved.
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*/
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#include <linux/dma-buf.h>
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#include <linux/dma-resv.h>
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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_DEVICE_STATS(op) \
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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_DEFINE_PORT_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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#define EFA_STATS_ENUM(ename, name) ename,
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#define EFA_STATS_STR(ename, nam) \
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[ename].name = nam,
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enum efa_hw_device_stats {
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EFA_DEFINE_DEVICE_STATS(EFA_STATS_ENUM)
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};
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static const struct rdma_stat_desc efa_device_stats_descs[] = {
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EFA_DEFINE_DEVICE_STATS(EFA_STATS_STR)
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};
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enum efa_hw_port_stats {
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EFA_DEFINE_PORT_STATS(EFA_STATS_ENUM)
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};
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static const struct rdma_stat_desc efa_port_stats_descs[] = {
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EFA_DEFINE_PORT_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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if (dev->neqs)
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resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS;
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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, u32 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, u32 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, u32 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);
|
|
if (err)
|
|
return err;
|
|
|
|
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 +
|
|
(resp->llq_desc_offset & ~PAGE_MASK));
|
|
|
|
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;
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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_cq_user_mmap_entries_remove(cq);
|
|
efa_destroy_cq_idx(dev, cq->cq_idx);
|
|
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 ib_udata *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;
|
|
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;
|
|
}
|
|
|
|
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;
|
|
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, 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;
|
|
}
|
|
|
|
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);
|
|
|
|
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;
|
|
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);
|
|
}
|
|
|
|
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_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;
|
|
|
|
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;
|
|
}
|
|
|