197549c34SHans Petter Selasky /* 297549c34SHans Petter Selasky * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. 397549c34SHans Petter Selasky * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 497549c34SHans Petter Selasky * 597549c34SHans Petter Selasky * This software is available to you under a choice of one of two 697549c34SHans Petter Selasky * licenses. You may choose to be licensed under the terms of the GNU 797549c34SHans Petter Selasky * General Public License (GPL) Version 2, available from the file 897549c34SHans Petter Selasky * COPYING in the main directory of this source tree, or the 997549c34SHans Petter Selasky * OpenIB.org BSD license below: 1097549c34SHans Petter Selasky * 1197549c34SHans Petter Selasky * Redistribution and use in source and binary forms, with or 1297549c34SHans Petter Selasky * without modification, are permitted provided that the following 1397549c34SHans Petter Selasky * conditions are met: 1497549c34SHans Petter Selasky * 1597549c34SHans Petter Selasky * - Redistributions of source code must retain the above 1697549c34SHans Petter Selasky * copyright notice, this list of conditions and the following 1797549c34SHans Petter Selasky * disclaimer. 1897549c34SHans Petter Selasky * 1997549c34SHans Petter Selasky * - Redistributions in binary form must reproduce the above 2097549c34SHans Petter Selasky * copyright notice, this list of conditions and the following 2197549c34SHans Petter Selasky * disclaimer in the documentation and/or other materials 2297549c34SHans Petter Selasky * provided with the distribution. 2397549c34SHans Petter Selasky * 2497549c34SHans Petter Selasky * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 2597549c34SHans Petter Selasky * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 2697549c34SHans Petter Selasky * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2797549c34SHans Petter Selasky * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 2897549c34SHans Petter Selasky * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 2997549c34SHans Petter Selasky * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 3097549c34SHans Petter Selasky * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 3197549c34SHans Petter Selasky * SOFTWARE. 3297549c34SHans Petter Selasky */ 3397549c34SHans Petter Selasky 3497549c34SHans Petter Selasky #include <dev/mlx4/cq.h> 3597549c34SHans Petter Selasky #include <dev/mlx4/qp.h> 3697549c34SHans Petter Selasky #include <dev/mlx4/srq.h> 378cc48704SHans Petter Selasky #include <dev/mlx4/driver.h> 3897549c34SHans Petter Selasky #include <linux/slab.h> 3997549c34SHans Petter Selasky 4097549c34SHans Petter Selasky #include "mlx4_ib.h" 418cc48704SHans Petter Selasky #include <rdma/mlx4-abi.h> 4297549c34SHans Petter Selasky 4397549c34SHans Petter Selasky static void mlx4_ib_cq_comp(struct mlx4_cq *cq) 4497549c34SHans Petter Selasky { 4597549c34SHans Petter Selasky struct ib_cq *ibcq = &to_mibcq(cq)->ibcq; 4697549c34SHans Petter Selasky ibcq->comp_handler(ibcq, ibcq->cq_context); 4797549c34SHans Petter Selasky } 4897549c34SHans Petter Selasky 4997549c34SHans Petter Selasky static void mlx4_ib_cq_event(struct mlx4_cq *cq, enum mlx4_event type) 5097549c34SHans Petter Selasky { 5197549c34SHans Petter Selasky struct ib_event event; 5297549c34SHans Petter Selasky struct ib_cq *ibcq; 5397549c34SHans Petter Selasky 5497549c34SHans Petter Selasky if (type != MLX4_EVENT_TYPE_CQ_ERROR) { 5597549c34SHans Petter Selasky pr_warn("Unexpected event type %d " 5697549c34SHans Petter Selasky "on CQ %06x\n", type, cq->cqn); 5797549c34SHans Petter Selasky return; 5897549c34SHans Petter Selasky } 5997549c34SHans Petter Selasky 6097549c34SHans Petter Selasky ibcq = &to_mibcq(cq)->ibcq; 6197549c34SHans Petter Selasky if (ibcq->event_handler) { 6297549c34SHans Petter Selasky event.device = ibcq->device; 6397549c34SHans Petter Selasky event.event = IB_EVENT_CQ_ERR; 6497549c34SHans Petter Selasky event.element.cq = ibcq; 6597549c34SHans Petter Selasky ibcq->event_handler(&event, ibcq->cq_context); 6697549c34SHans Petter Selasky } 6797549c34SHans Petter Selasky } 6897549c34SHans Petter Selasky 6997549c34SHans Petter Selasky static void *get_cqe_from_buf(struct mlx4_ib_cq_buf *buf, int n) 7097549c34SHans Petter Selasky { 7197549c34SHans Petter Selasky return mlx4_buf_offset(&buf->buf, n * buf->entry_size); 7297549c34SHans Petter Selasky } 7397549c34SHans Petter Selasky 7497549c34SHans Petter Selasky static void *get_cqe(struct mlx4_ib_cq *cq, int n) 7597549c34SHans Petter Selasky { 7697549c34SHans Petter Selasky return get_cqe_from_buf(&cq->buf, n); 7797549c34SHans Petter Selasky } 7897549c34SHans Petter Selasky 7997549c34SHans Petter Selasky static void *get_sw_cqe(struct mlx4_ib_cq *cq, int n) 8097549c34SHans Petter Selasky { 8197549c34SHans Petter Selasky struct mlx4_cqe *cqe = get_cqe(cq, n & cq->ibcq.cqe); 8297549c34SHans Petter Selasky struct mlx4_cqe *tcqe = ((cq->buf.entry_size == 64) ? (cqe + 1) : cqe); 8397549c34SHans Petter Selasky 8497549c34SHans Petter Selasky return (!!(tcqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK) ^ 8597549c34SHans Petter Selasky !!(n & (cq->ibcq.cqe + 1))) ? NULL : cqe; 8697549c34SHans Petter Selasky } 8797549c34SHans Petter Selasky 8897549c34SHans Petter Selasky static struct mlx4_cqe *next_cqe_sw(struct mlx4_ib_cq *cq) 8997549c34SHans Petter Selasky { 9097549c34SHans Petter Selasky return get_sw_cqe(cq, cq->mcq.cons_index); 9197549c34SHans Petter Selasky } 9297549c34SHans Petter Selasky 938cc48704SHans Petter Selasky int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) 9497549c34SHans Petter Selasky { 9597549c34SHans Petter Selasky struct mlx4_ib_cq *mcq = to_mcq(cq); 9697549c34SHans Petter Selasky struct mlx4_ib_dev *dev = to_mdev(cq->device); 9797549c34SHans Petter Selasky 988cc48704SHans Petter Selasky return mlx4_cq_modify(dev->dev, &mcq->mcq, cq_count, cq_period); 9997549c34SHans Petter Selasky } 10097549c34SHans Petter Selasky 10197549c34SHans Petter Selasky static int mlx4_ib_alloc_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int nent) 10297549c34SHans Petter Selasky { 10397549c34SHans Petter Selasky int err; 10497549c34SHans Petter Selasky 10597549c34SHans Petter Selasky err = mlx4_buf_alloc(dev->dev, nent * dev->dev->caps.cqe_size, 1068cc48704SHans Petter Selasky PAGE_SIZE * 2, &buf->buf, GFP_KERNEL); 10797549c34SHans Petter Selasky 10897549c34SHans Petter Selasky if (err) 10997549c34SHans Petter Selasky goto out; 11097549c34SHans Petter Selasky 11197549c34SHans Petter Selasky buf->entry_size = dev->dev->caps.cqe_size; 11297549c34SHans Petter Selasky err = mlx4_mtt_init(dev->dev, buf->buf.npages, buf->buf.page_shift, 11397549c34SHans Petter Selasky &buf->mtt); 11497549c34SHans Petter Selasky if (err) 11597549c34SHans Petter Selasky goto err_buf; 11697549c34SHans Petter Selasky 1178cc48704SHans Petter Selasky err = mlx4_buf_write_mtt(dev->dev, &buf->mtt, &buf->buf, GFP_KERNEL); 11897549c34SHans Petter Selasky if (err) 11997549c34SHans Petter Selasky goto err_mtt; 12097549c34SHans Petter Selasky 12197549c34SHans Petter Selasky return 0; 12297549c34SHans Petter Selasky 12397549c34SHans Petter Selasky err_mtt: 12497549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &buf->mtt); 12597549c34SHans Petter Selasky 12697549c34SHans Petter Selasky err_buf: 12797549c34SHans Petter Selasky mlx4_buf_free(dev->dev, nent * buf->entry_size, &buf->buf); 12897549c34SHans Petter Selasky 12997549c34SHans Petter Selasky out: 13097549c34SHans Petter Selasky return err; 13197549c34SHans Petter Selasky } 13297549c34SHans Petter Selasky 13397549c34SHans Petter Selasky static void mlx4_ib_free_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int cqe) 13497549c34SHans Petter Selasky { 13597549c34SHans Petter Selasky mlx4_buf_free(dev->dev, (cqe + 1) * buf->entry_size, &buf->buf); 13697549c34SHans Petter Selasky } 13797549c34SHans Petter Selasky 13897549c34SHans Petter Selasky static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *context, 13997549c34SHans Petter Selasky struct mlx4_ib_cq_buf *buf, struct ib_umem **umem, 14097549c34SHans Petter Selasky u64 buf_addr, int cqe) 14197549c34SHans Petter Selasky { 14297549c34SHans Petter Selasky int err; 14397549c34SHans Petter Selasky int cqe_size = dev->dev->caps.cqe_size; 14497549c34SHans Petter Selasky 14597549c34SHans Petter Selasky *umem = ib_umem_get(context, buf_addr, cqe * cqe_size, 14697549c34SHans Petter Selasky IB_ACCESS_LOCAL_WRITE, 1); 14797549c34SHans Petter Selasky if (IS_ERR(*umem)) 14897549c34SHans Petter Selasky return PTR_ERR(*umem); 14997549c34SHans Petter Selasky 1508cc48704SHans Petter Selasky err = mlx4_mtt_init(dev->dev, ib_umem_page_count(*umem), 1518cc48704SHans Petter Selasky ilog2((*umem)->page_size), &buf->mtt); 15297549c34SHans Petter Selasky if (err) 15397549c34SHans Petter Selasky goto err_buf; 15497549c34SHans Petter Selasky 15597549c34SHans Petter Selasky err = mlx4_ib_umem_write_mtt(dev, &buf->mtt, *umem); 15697549c34SHans Petter Selasky if (err) 15797549c34SHans Petter Selasky goto err_mtt; 15897549c34SHans Petter Selasky 15997549c34SHans Petter Selasky return 0; 16097549c34SHans Petter Selasky 16197549c34SHans Petter Selasky err_mtt: 16297549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &buf->mtt); 16397549c34SHans Petter Selasky 16497549c34SHans Petter Selasky err_buf: 16597549c34SHans Petter Selasky ib_umem_release(*umem); 16697549c34SHans Petter Selasky 16797549c34SHans Petter Selasky return err; 16897549c34SHans Petter Selasky } 16997549c34SHans Petter Selasky 1708cc48704SHans Petter Selasky #define CQ_CREATE_FLAGS_SUPPORTED IB_CQ_FLAGS_TIMESTAMP_COMPLETION 17197549c34SHans Petter Selasky struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, 1728cc48704SHans Petter Selasky const struct ib_cq_init_attr *attr, 17397549c34SHans Petter Selasky struct ib_ucontext *context, 17497549c34SHans Petter Selasky struct ib_udata *udata) 17597549c34SHans Petter Selasky { 1768cc48704SHans Petter Selasky int entries = attr->cqe; 1778cc48704SHans Petter Selasky int vector = attr->comp_vector; 17897549c34SHans Petter Selasky struct mlx4_ib_dev *dev = to_mdev(ibdev); 17997549c34SHans Petter Selasky struct mlx4_ib_cq *cq; 18097549c34SHans Petter Selasky struct mlx4_uar *uar; 18197549c34SHans Petter Selasky int err; 18297549c34SHans Petter Selasky 18397549c34SHans Petter Selasky if (entries < 1 || entries > dev->dev->caps.max_cqes) 18497549c34SHans Petter Selasky return ERR_PTR(-EINVAL); 18597549c34SHans Petter Selasky 18697549c34SHans Petter Selasky if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED) 18797549c34SHans Petter Selasky return ERR_PTR(-EINVAL); 18897549c34SHans Petter Selasky 1898cc48704SHans Petter Selasky cq = kmalloc(sizeof *cq, GFP_KERNEL); 19097549c34SHans Petter Selasky if (!cq) 19197549c34SHans Petter Selasky return ERR_PTR(-ENOMEM); 19297549c34SHans Petter Selasky 19397549c34SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 19497549c34SHans Petter Selasky cq->ibcq.cqe = entries - 1; 19597549c34SHans Petter Selasky mutex_init(&cq->resize_mutex); 19697549c34SHans Petter Selasky spin_lock_init(&cq->lock); 19797549c34SHans Petter Selasky cq->resize_buf = NULL; 19897549c34SHans Petter Selasky cq->resize_umem = NULL; 19997549c34SHans Petter Selasky cq->create_flags = attr->flags; 2008cc48704SHans Petter Selasky INIT_LIST_HEAD(&cq->send_qp_list); 2018cc48704SHans Petter Selasky INIT_LIST_HEAD(&cq->recv_qp_list); 20297549c34SHans Petter Selasky 20397549c34SHans Petter Selasky if (context) { 20497549c34SHans Petter Selasky struct mlx4_ib_create_cq ucmd; 20597549c34SHans Petter Selasky 20697549c34SHans Petter Selasky if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) { 20797549c34SHans Petter Selasky err = -EFAULT; 20897549c34SHans Petter Selasky goto err_cq; 20997549c34SHans Petter Selasky } 21097549c34SHans Petter Selasky 21197549c34SHans Petter Selasky err = mlx4_ib_get_cq_umem(dev, context, &cq->buf, &cq->umem, 21297549c34SHans Petter Selasky ucmd.buf_addr, entries); 21397549c34SHans Petter Selasky if (err) 21497549c34SHans Petter Selasky goto err_cq; 21597549c34SHans Petter Selasky 21697549c34SHans Petter Selasky err = mlx4_ib_db_map_user(to_mucontext(context), ucmd.db_addr, 21797549c34SHans Petter Selasky &cq->db); 21897549c34SHans Petter Selasky if (err) 21997549c34SHans Petter Selasky goto err_mtt; 22097549c34SHans Petter Selasky 22197549c34SHans Petter Selasky uar = &to_mucontext(context)->uar; 22297549c34SHans Petter Selasky } else { 2238cc48704SHans Petter Selasky err = mlx4_db_alloc(dev->dev, &cq->db, 1, GFP_KERNEL); 22497549c34SHans Petter Selasky if (err) 22597549c34SHans Petter Selasky goto err_cq; 22697549c34SHans Petter Selasky 22797549c34SHans Petter Selasky cq->mcq.set_ci_db = cq->db.db; 22897549c34SHans Petter Selasky cq->mcq.arm_db = cq->db.db + 1; 22997549c34SHans Petter Selasky *cq->mcq.set_ci_db = 0; 23097549c34SHans Petter Selasky *cq->mcq.arm_db = 0; 23197549c34SHans Petter Selasky 23297549c34SHans Petter Selasky err = mlx4_ib_alloc_cq_buf(dev, &cq->buf, entries); 23397549c34SHans Petter Selasky if (err) 23497549c34SHans Petter Selasky goto err_db; 23597549c34SHans Petter Selasky 23697549c34SHans Petter Selasky uar = &dev->priv_uar; 23797549c34SHans Petter Selasky } 23897549c34SHans Petter Selasky 23997549c34SHans Petter Selasky if (dev->eq_table) 24097549c34SHans Petter Selasky vector = dev->eq_table[vector % ibdev->num_comp_vectors]; 24197549c34SHans Petter Selasky 24297549c34SHans Petter Selasky err = mlx4_cq_alloc(dev->dev, entries, &cq->buf.mtt, uar, 24397549c34SHans Petter Selasky cq->db.dma, &cq->mcq, vector, 0, 2448cc48704SHans Petter Selasky !!(cq->create_flags & IB_CQ_FLAGS_TIMESTAMP_COMPLETION)); 24597549c34SHans Petter Selasky if (err) 24697549c34SHans Petter Selasky goto err_dbmap; 24797549c34SHans Petter Selasky 24897549c34SHans Petter Selasky cq->mcq.comp = mlx4_ib_cq_comp; 24997549c34SHans Petter Selasky cq->mcq.event = mlx4_ib_cq_event; 25097549c34SHans Petter Selasky 25197549c34SHans Petter Selasky if (context) 25297549c34SHans Petter Selasky if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof (__u32))) { 25397549c34SHans Petter Selasky err = -EFAULT; 2548cc48704SHans Petter Selasky goto err_cq_free; 25597549c34SHans Petter Selasky } 25697549c34SHans Petter Selasky 25797549c34SHans Petter Selasky return &cq->ibcq; 25897549c34SHans Petter Selasky 2598cc48704SHans Petter Selasky err_cq_free: 2608cc48704SHans Petter Selasky mlx4_cq_free(dev->dev, &cq->mcq); 2618cc48704SHans Petter Selasky 26297549c34SHans Petter Selasky err_dbmap: 26397549c34SHans Petter Selasky if (context) 26497549c34SHans Petter Selasky mlx4_ib_db_unmap_user(to_mucontext(context), &cq->db); 26597549c34SHans Petter Selasky 26697549c34SHans Petter Selasky err_mtt: 26797549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &cq->buf.mtt); 26897549c34SHans Petter Selasky 26997549c34SHans Petter Selasky if (context) 27097549c34SHans Petter Selasky ib_umem_release(cq->umem); 27197549c34SHans Petter Selasky else 27297549c34SHans Petter Selasky mlx4_ib_free_cq_buf(dev, &cq->buf, cq->ibcq.cqe); 27397549c34SHans Petter Selasky 27497549c34SHans Petter Selasky err_db: 27597549c34SHans Petter Selasky if (!context) 27697549c34SHans Petter Selasky mlx4_db_free(dev->dev, &cq->db); 27797549c34SHans Petter Selasky 27897549c34SHans Petter Selasky err_cq: 27997549c34SHans Petter Selasky kfree(cq); 28097549c34SHans Petter Selasky 28197549c34SHans Petter Selasky return ERR_PTR(err); 28297549c34SHans Petter Selasky } 28397549c34SHans Petter Selasky 28497549c34SHans Petter Selasky static int mlx4_alloc_resize_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq, 28597549c34SHans Petter Selasky int entries) 28697549c34SHans Petter Selasky { 28797549c34SHans Petter Selasky int err; 28897549c34SHans Petter Selasky 28997549c34SHans Petter Selasky if (cq->resize_buf) 29097549c34SHans Petter Selasky return -EBUSY; 29197549c34SHans Petter Selasky 2928cc48704SHans Petter Selasky cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_KERNEL); 29397549c34SHans Petter Selasky if (!cq->resize_buf) 29497549c34SHans Petter Selasky return -ENOMEM; 29597549c34SHans Petter Selasky 29697549c34SHans Petter Selasky err = mlx4_ib_alloc_cq_buf(dev, &cq->resize_buf->buf, entries); 29797549c34SHans Petter Selasky if (err) { 29897549c34SHans Petter Selasky kfree(cq->resize_buf); 29997549c34SHans Petter Selasky cq->resize_buf = NULL; 30097549c34SHans Petter Selasky return err; 30197549c34SHans Petter Selasky } 30297549c34SHans Petter Selasky 30397549c34SHans Petter Selasky cq->resize_buf->cqe = entries - 1; 30497549c34SHans Petter Selasky 30597549c34SHans Petter Selasky return 0; 30697549c34SHans Petter Selasky } 30797549c34SHans Petter Selasky 30897549c34SHans Petter Selasky static int mlx4_alloc_resize_umem(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq, 30997549c34SHans Petter Selasky int entries, struct ib_udata *udata) 31097549c34SHans Petter Selasky { 31197549c34SHans Petter Selasky struct mlx4_ib_resize_cq ucmd; 31297549c34SHans Petter Selasky int err; 31397549c34SHans Petter Selasky 31497549c34SHans Petter Selasky if (cq->resize_umem) 31597549c34SHans Petter Selasky return -EBUSY; 31697549c34SHans Petter Selasky 31797549c34SHans Petter Selasky if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) 31897549c34SHans Petter Selasky return -EFAULT; 31997549c34SHans Petter Selasky 3208cc48704SHans Petter Selasky cq->resize_buf = kmalloc(sizeof *cq->resize_buf, GFP_KERNEL); 32197549c34SHans Petter Selasky if (!cq->resize_buf) 32297549c34SHans Petter Selasky return -ENOMEM; 32397549c34SHans Petter Selasky 32497549c34SHans Petter Selasky err = mlx4_ib_get_cq_umem(dev, cq->umem->context, &cq->resize_buf->buf, 32597549c34SHans Petter Selasky &cq->resize_umem, ucmd.buf_addr, entries); 32697549c34SHans Petter Selasky if (err) { 32797549c34SHans Petter Selasky kfree(cq->resize_buf); 32897549c34SHans Petter Selasky cq->resize_buf = NULL; 32997549c34SHans Petter Selasky return err; 33097549c34SHans Petter Selasky } 33197549c34SHans Petter Selasky 33297549c34SHans Petter Selasky cq->resize_buf->cqe = entries - 1; 33397549c34SHans Petter Selasky 33497549c34SHans Petter Selasky return 0; 33597549c34SHans Petter Selasky } 33697549c34SHans Petter Selasky 33797549c34SHans Petter Selasky static int mlx4_ib_get_outstanding_cqes(struct mlx4_ib_cq *cq) 33897549c34SHans Petter Selasky { 33997549c34SHans Petter Selasky u32 i; 34097549c34SHans Petter Selasky 34197549c34SHans Petter Selasky i = cq->mcq.cons_index; 34297549c34SHans Petter Selasky while (get_sw_cqe(cq, i)) 34397549c34SHans Petter Selasky ++i; 34497549c34SHans Petter Selasky 34597549c34SHans Petter Selasky return i - cq->mcq.cons_index; 34697549c34SHans Petter Selasky } 34797549c34SHans Petter Selasky 3488cc48704SHans Petter Selasky static void mlx4_ib_cq_resize_copy_cqes(struct mlx4_ib_cq *cq) 34997549c34SHans Petter Selasky { 35097549c34SHans Petter Selasky struct mlx4_cqe *cqe, *new_cqe; 35197549c34SHans Petter Selasky int i; 35297549c34SHans Petter Selasky int cqe_size = cq->buf.entry_size; 35397549c34SHans Petter Selasky int cqe_inc = cqe_size == 64 ? 1 : 0; 35497549c34SHans Petter Selasky 35597549c34SHans Petter Selasky i = cq->mcq.cons_index; 35697549c34SHans Petter Selasky cqe = get_cqe(cq, i & cq->ibcq.cqe); 35797549c34SHans Petter Selasky cqe += cqe_inc; 35897549c34SHans Petter Selasky 35997549c34SHans Petter Selasky while ((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) != MLX4_CQE_OPCODE_RESIZE) { 36097549c34SHans Petter Selasky new_cqe = get_cqe_from_buf(&cq->resize_buf->buf, 36197549c34SHans Petter Selasky (i + 1) & cq->resize_buf->cqe); 36297549c34SHans Petter Selasky memcpy(new_cqe, get_cqe(cq, i & cq->ibcq.cqe), cqe_size); 36397549c34SHans Petter Selasky new_cqe += cqe_inc; 36497549c34SHans Petter Selasky 36597549c34SHans Petter Selasky new_cqe->owner_sr_opcode = (cqe->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK) | 36697549c34SHans Petter Selasky (((i + 1) & (cq->resize_buf->cqe + 1)) ? MLX4_CQE_OWNER_MASK : 0); 36797549c34SHans Petter Selasky cqe = get_cqe(cq, ++i & cq->ibcq.cqe); 36897549c34SHans Petter Selasky cqe += cqe_inc; 36997549c34SHans Petter Selasky } 37097549c34SHans Petter Selasky ++cq->mcq.cons_index; 37197549c34SHans Petter Selasky } 37297549c34SHans Petter Selasky 37397549c34SHans Petter Selasky int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) 37497549c34SHans Petter Selasky { 37597549c34SHans Petter Selasky struct mlx4_ib_dev *dev = to_mdev(ibcq->device); 37697549c34SHans Petter Selasky struct mlx4_ib_cq *cq = to_mcq(ibcq); 37797549c34SHans Petter Selasky struct mlx4_mtt mtt; 37897549c34SHans Petter Selasky int outst_cqe; 37997549c34SHans Petter Selasky int err; 38097549c34SHans Petter Selasky 38197549c34SHans Petter Selasky mutex_lock(&cq->resize_mutex); 38297549c34SHans Petter Selasky if (entries < 1 || entries > dev->dev->caps.max_cqes) { 38397549c34SHans Petter Selasky err = -EINVAL; 38497549c34SHans Petter Selasky goto out; 38597549c34SHans Petter Selasky } 38697549c34SHans Petter Selasky 38797549c34SHans Petter Selasky entries = roundup_pow_of_two(entries + 1); 38897549c34SHans Petter Selasky if (entries == ibcq->cqe + 1) { 38997549c34SHans Petter Selasky err = 0; 39097549c34SHans Petter Selasky goto out; 39197549c34SHans Petter Selasky } 39297549c34SHans Petter Selasky 39397549c34SHans Petter Selasky if (entries > dev->dev->caps.max_cqes + 1) { 39497549c34SHans Petter Selasky err = -EINVAL; 39597549c34SHans Petter Selasky goto out; 39697549c34SHans Petter Selasky } 39797549c34SHans Petter Selasky 39897549c34SHans Petter Selasky if (ibcq->uobject) { 39997549c34SHans Petter Selasky err = mlx4_alloc_resize_umem(dev, cq, entries, udata); 40097549c34SHans Petter Selasky if (err) 40197549c34SHans Petter Selasky goto out; 40297549c34SHans Petter Selasky } else { 40397549c34SHans Petter Selasky /* Can't be smaller than the number of outstanding CQEs */ 40497549c34SHans Petter Selasky outst_cqe = mlx4_ib_get_outstanding_cqes(cq); 40597549c34SHans Petter Selasky if (entries < outst_cqe + 1) { 4068cc48704SHans Petter Selasky err = -EINVAL; 40797549c34SHans Petter Selasky goto out; 40897549c34SHans Petter Selasky } 40997549c34SHans Petter Selasky 41097549c34SHans Petter Selasky err = mlx4_alloc_resize_buf(dev, cq, entries); 41197549c34SHans Petter Selasky if (err) 41297549c34SHans Petter Selasky goto out; 41397549c34SHans Petter Selasky } 41497549c34SHans Petter Selasky 41597549c34SHans Petter Selasky mtt = cq->buf.mtt; 41697549c34SHans Petter Selasky 41797549c34SHans Petter Selasky err = mlx4_cq_resize(dev->dev, &cq->mcq, entries, &cq->resize_buf->buf.mtt); 41897549c34SHans Petter Selasky if (err) 41997549c34SHans Petter Selasky goto err_buf; 42097549c34SHans Petter Selasky 42197549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &mtt); 42297549c34SHans Petter Selasky if (ibcq->uobject) { 42397549c34SHans Petter Selasky cq->buf = cq->resize_buf->buf; 42497549c34SHans Petter Selasky cq->ibcq.cqe = cq->resize_buf->cqe; 42597549c34SHans Petter Selasky ib_umem_release(cq->umem); 42697549c34SHans Petter Selasky cq->umem = cq->resize_umem; 42797549c34SHans Petter Selasky 42897549c34SHans Petter Selasky kfree(cq->resize_buf); 42997549c34SHans Petter Selasky cq->resize_buf = NULL; 43097549c34SHans Petter Selasky cq->resize_umem = NULL; 43197549c34SHans Petter Selasky } else { 43297549c34SHans Petter Selasky struct mlx4_ib_cq_buf tmp_buf; 43397549c34SHans Petter Selasky int tmp_cqe = 0; 43497549c34SHans Petter Selasky 43597549c34SHans Petter Selasky spin_lock_irq(&cq->lock); 43697549c34SHans Petter Selasky if (cq->resize_buf) { 4378cc48704SHans Petter Selasky mlx4_ib_cq_resize_copy_cqes(cq); 43897549c34SHans Petter Selasky tmp_buf = cq->buf; 43997549c34SHans Petter Selasky tmp_cqe = cq->ibcq.cqe; 44097549c34SHans Petter Selasky cq->buf = cq->resize_buf->buf; 44197549c34SHans Petter Selasky cq->ibcq.cqe = cq->resize_buf->cqe; 44297549c34SHans Petter Selasky 44397549c34SHans Petter Selasky kfree(cq->resize_buf); 44497549c34SHans Petter Selasky cq->resize_buf = NULL; 44597549c34SHans Petter Selasky } 44697549c34SHans Petter Selasky spin_unlock_irq(&cq->lock); 44797549c34SHans Petter Selasky 44897549c34SHans Petter Selasky if (tmp_cqe) 44997549c34SHans Petter Selasky mlx4_ib_free_cq_buf(dev, &tmp_buf, tmp_cqe); 45097549c34SHans Petter Selasky } 45197549c34SHans Petter Selasky 45297549c34SHans Petter Selasky goto out; 45397549c34SHans Petter Selasky 45497549c34SHans Petter Selasky err_buf: 45597549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &cq->resize_buf->buf.mtt); 45697549c34SHans Petter Selasky if (!ibcq->uobject) 45797549c34SHans Petter Selasky mlx4_ib_free_cq_buf(dev, &cq->resize_buf->buf, 45897549c34SHans Petter Selasky cq->resize_buf->cqe); 45997549c34SHans Petter Selasky 46097549c34SHans Petter Selasky kfree(cq->resize_buf); 46197549c34SHans Petter Selasky cq->resize_buf = NULL; 46297549c34SHans Petter Selasky 46397549c34SHans Petter Selasky if (cq->resize_umem) { 46497549c34SHans Petter Selasky ib_umem_release(cq->resize_umem); 46597549c34SHans Petter Selasky cq->resize_umem = NULL; 46697549c34SHans Petter Selasky } 46797549c34SHans Petter Selasky 46897549c34SHans Petter Selasky out: 46997549c34SHans Petter Selasky mutex_unlock(&cq->resize_mutex); 47097549c34SHans Petter Selasky 47197549c34SHans Petter Selasky return err; 47297549c34SHans Petter Selasky } 47397549c34SHans Petter Selasky 47497549c34SHans Petter Selasky int mlx4_ib_destroy_cq(struct ib_cq *cq) 47597549c34SHans Petter Selasky { 47697549c34SHans Petter Selasky struct mlx4_ib_dev *dev = to_mdev(cq->device); 47797549c34SHans Petter Selasky struct mlx4_ib_cq *mcq = to_mcq(cq); 47897549c34SHans Petter Selasky 47997549c34SHans Petter Selasky mlx4_cq_free(dev->dev, &mcq->mcq); 48097549c34SHans Petter Selasky mlx4_mtt_cleanup(dev->dev, &mcq->buf.mtt); 48197549c34SHans Petter Selasky 48297549c34SHans Petter Selasky if (cq->uobject) { 48397549c34SHans Petter Selasky mlx4_ib_db_unmap_user(to_mucontext(cq->uobject->context), &mcq->db); 48497549c34SHans Petter Selasky ib_umem_release(mcq->umem); 48597549c34SHans Petter Selasky } else { 48697549c34SHans Petter Selasky mlx4_ib_free_cq_buf(dev, &mcq->buf, cq->cqe); 48797549c34SHans Petter Selasky mlx4_db_free(dev->dev, &mcq->db); 48897549c34SHans Petter Selasky } 48997549c34SHans Petter Selasky 49097549c34SHans Petter Selasky kfree(mcq); 49197549c34SHans Petter Selasky 49297549c34SHans Petter Selasky return 0; 49397549c34SHans Petter Selasky } 49497549c34SHans Petter Selasky 49597549c34SHans Petter Selasky static void dump_cqe(void *cqe) 49697549c34SHans Petter Selasky { 49797549c34SHans Petter Selasky __be32 *buf = cqe; 49897549c34SHans Petter Selasky 49997549c34SHans Petter Selasky pr_debug("CQE contents %08x %08x %08x %08x %08x %08x %08x %08x\n", 50097549c34SHans Petter Selasky be32_to_cpu(buf[0]), be32_to_cpu(buf[1]), be32_to_cpu(buf[2]), 50197549c34SHans Petter Selasky be32_to_cpu(buf[3]), be32_to_cpu(buf[4]), be32_to_cpu(buf[5]), 50297549c34SHans Petter Selasky be32_to_cpu(buf[6]), be32_to_cpu(buf[7])); 50397549c34SHans Petter Selasky } 50497549c34SHans Petter Selasky 50597549c34SHans Petter Selasky static void mlx4_ib_handle_error_cqe(struct mlx4_err_cqe *cqe, 50697549c34SHans Petter Selasky struct ib_wc *wc) 50797549c34SHans Petter Selasky { 50897549c34SHans Petter Selasky if (cqe->syndrome == MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR) { 50997549c34SHans Petter Selasky pr_debug("local QP operation err " 51097549c34SHans Petter Selasky "(QPN %06x, WQE index %x, vendor syndrome %02x, " 51197549c34SHans Petter Selasky "opcode = %02x)\n", 51297549c34SHans Petter Selasky be32_to_cpu(cqe->my_qpn), be16_to_cpu(cqe->wqe_index), 51397549c34SHans Petter Selasky cqe->vendor_err_syndrome, 51497549c34SHans Petter Selasky cqe->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK); 51597549c34SHans Petter Selasky dump_cqe(cqe); 51697549c34SHans Petter Selasky } 51797549c34SHans Petter Selasky 51897549c34SHans Petter Selasky switch (cqe->syndrome) { 51997549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR: 52097549c34SHans Petter Selasky wc->status = IB_WC_LOC_LEN_ERR; 52197549c34SHans Petter Selasky break; 52297549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR: 52397549c34SHans Petter Selasky wc->status = IB_WC_LOC_QP_OP_ERR; 52497549c34SHans Petter Selasky break; 52597549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_LOCAL_PROT_ERR: 52697549c34SHans Petter Selasky wc->status = IB_WC_LOC_PROT_ERR; 52797549c34SHans Petter Selasky break; 52897549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_WR_FLUSH_ERR: 52997549c34SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 53097549c34SHans Petter Selasky break; 53197549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_MW_BIND_ERR: 53297549c34SHans Petter Selasky wc->status = IB_WC_MW_BIND_ERR; 53397549c34SHans Petter Selasky break; 53497549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_BAD_RESP_ERR: 53597549c34SHans Petter Selasky wc->status = IB_WC_BAD_RESP_ERR; 53697549c34SHans Petter Selasky break; 53797549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR: 53897549c34SHans Petter Selasky wc->status = IB_WC_LOC_ACCESS_ERR; 53997549c34SHans Petter Selasky break; 54097549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR: 54197549c34SHans Petter Selasky wc->status = IB_WC_REM_INV_REQ_ERR; 54297549c34SHans Petter Selasky break; 54397549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR: 54497549c34SHans Petter Selasky wc->status = IB_WC_REM_ACCESS_ERR; 54597549c34SHans Petter Selasky break; 54697549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_REMOTE_OP_ERR: 54797549c34SHans Petter Selasky wc->status = IB_WC_REM_OP_ERR; 54897549c34SHans Petter Selasky break; 54997549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR: 55097549c34SHans Petter Selasky wc->status = IB_WC_RETRY_EXC_ERR; 55197549c34SHans Petter Selasky break; 55297549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR: 55397549c34SHans Petter Selasky wc->status = IB_WC_RNR_RETRY_EXC_ERR; 55497549c34SHans Petter Selasky break; 55597549c34SHans Petter Selasky case MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR: 55697549c34SHans Petter Selasky wc->status = IB_WC_REM_ABORT_ERR; 55797549c34SHans Petter Selasky break; 55897549c34SHans Petter Selasky default: 55997549c34SHans Petter Selasky wc->status = IB_WC_GENERAL_ERR; 56097549c34SHans Petter Selasky break; 56197549c34SHans Petter Selasky } 56297549c34SHans Petter Selasky 56397549c34SHans Petter Selasky wc->vendor_err = cqe->vendor_err_syndrome; 56497549c34SHans Petter Selasky } 56597549c34SHans Petter Selasky 56697549c34SHans Petter Selasky static int mlx4_ib_ipoib_csum_ok(__be16 status, __be16 checksum) 56797549c34SHans Petter Selasky { 56897549c34SHans Petter Selasky return ((status & cpu_to_be16(MLX4_CQE_STATUS_IPV4 | 56997549c34SHans Petter Selasky MLX4_CQE_STATUS_IPV4F | 57097549c34SHans Petter Selasky MLX4_CQE_STATUS_IPV4OPT | 57197549c34SHans Petter Selasky MLX4_CQE_STATUS_IPV6 | 57297549c34SHans Petter Selasky MLX4_CQE_STATUS_IPOK)) == 57397549c34SHans Petter Selasky cpu_to_be16(MLX4_CQE_STATUS_IPV4 | 57497549c34SHans Petter Selasky MLX4_CQE_STATUS_IPOK)) && 57597549c34SHans Petter Selasky (status & cpu_to_be16(MLX4_CQE_STATUS_UDP | 57697549c34SHans Petter Selasky MLX4_CQE_STATUS_TCP)) && 57797549c34SHans Petter Selasky checksum == cpu_to_be16(0xffff); 57897549c34SHans Petter Selasky } 57997549c34SHans Petter Selasky 5808cc48704SHans Petter Selasky static void use_tunnel_data(struct mlx4_ib_qp *qp, struct mlx4_ib_cq *cq, struct ib_wc *wc, 58197549c34SHans Petter Selasky unsigned tail, struct mlx4_cqe *cqe, int is_eth) 58297549c34SHans Petter Selasky { 58397549c34SHans Petter Selasky struct mlx4_ib_proxy_sqp_hdr *hdr; 58497549c34SHans Petter Selasky 58597549c34SHans Petter Selasky ib_dma_sync_single_for_cpu(qp->ibqp.device, 58697549c34SHans Petter Selasky qp->sqp_proxy_rcv[tail].map, 58797549c34SHans Petter Selasky sizeof (struct mlx4_ib_proxy_sqp_hdr), 58897549c34SHans Petter Selasky DMA_FROM_DEVICE); 58997549c34SHans Petter Selasky hdr = (struct mlx4_ib_proxy_sqp_hdr *) (qp->sqp_proxy_rcv[tail].addr); 59097549c34SHans Petter Selasky wc->pkey_index = be16_to_cpu(hdr->tun.pkey_index); 59197549c34SHans Petter Selasky wc->src_qp = be32_to_cpu(hdr->tun.flags_src_qp) & 0xFFFFFF; 59297549c34SHans Petter Selasky wc->wc_flags |= (hdr->tun.g_ml_path & 0x80) ? (IB_WC_GRH) : 0; 59397549c34SHans Petter Selasky wc->dlid_path_bits = 0; 59497549c34SHans Petter Selasky 59597549c34SHans Petter Selasky if (is_eth) { 59697549c34SHans Petter Selasky wc->vlan_id = be16_to_cpu(hdr->tun.sl_vid); 59797549c34SHans Petter Selasky memcpy(&(wc->smac[0]), (char *)&hdr->tun.mac_31_0, 4); 59897549c34SHans Petter Selasky memcpy(&(wc->smac[4]), (char *)&hdr->tun.slid_mac_47_32, 2); 5998cc48704SHans Petter Selasky wc->wc_flags |= (IB_WC_WITH_VLAN | IB_WC_WITH_SMAC); 60097549c34SHans Petter Selasky } else { 60197549c34SHans Petter Selasky wc->slid = be16_to_cpu(hdr->tun.slid_mac_47_32); 60297549c34SHans Petter Selasky wc->sl = (u8) (be16_to_cpu(hdr->tun.sl_vid) >> 12); 60397549c34SHans Petter Selasky } 6048cc48704SHans Petter Selasky } 60597549c34SHans Petter Selasky 6068cc48704SHans Petter Selasky static void mlx4_ib_qp_sw_comp(struct mlx4_ib_qp *qp, int num_entries, 6078cc48704SHans Petter Selasky struct ib_wc *wc, int *npolled, int is_send) 6088cc48704SHans Petter Selasky { 6098cc48704SHans Petter Selasky struct mlx4_ib_wq *wq; 6108cc48704SHans Petter Selasky unsigned cur; 6118cc48704SHans Petter Selasky int i; 6128cc48704SHans Petter Selasky 6138cc48704SHans Petter Selasky wq = is_send ? &qp->sq : &qp->rq; 6148cc48704SHans Petter Selasky cur = wq->head - wq->tail; 6158cc48704SHans Petter Selasky 6168cc48704SHans Petter Selasky if (cur == 0) 6178cc48704SHans Petter Selasky return; 6188cc48704SHans Petter Selasky 6198cc48704SHans Petter Selasky for (i = 0; i < cur && *npolled < num_entries; i++) { 6208cc48704SHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 6218cc48704SHans Petter Selasky wc->status = IB_WC_WR_FLUSH_ERR; 6228cc48704SHans Petter Selasky wc->vendor_err = MLX4_CQE_SYNDROME_WR_FLUSH_ERR; 6238cc48704SHans Petter Selasky wq->tail++; 6248cc48704SHans Petter Selasky (*npolled)++; 6258cc48704SHans Petter Selasky wc->qp = &qp->ibqp; 6268cc48704SHans Petter Selasky wc++; 6278cc48704SHans Petter Selasky } 6288cc48704SHans Petter Selasky } 6298cc48704SHans Petter Selasky 6308cc48704SHans Petter Selasky static void mlx4_ib_poll_sw_comp(struct mlx4_ib_cq *cq, int num_entries, 6318cc48704SHans Petter Selasky struct ib_wc *wc, int *npolled) 6328cc48704SHans Petter Selasky { 6338cc48704SHans Petter Selasky struct mlx4_ib_qp *qp; 6348cc48704SHans Petter Selasky 6358cc48704SHans Petter Selasky *npolled = 0; 6368cc48704SHans Petter Selasky /* Find uncompleted WQEs belonging to that cq and retrun 6378cc48704SHans Petter Selasky * simulated FLUSH_ERR completions 6388cc48704SHans Petter Selasky */ 6398cc48704SHans Petter Selasky list_for_each_entry(qp, &cq->send_qp_list, cq_send_list) { 6408cc48704SHans Petter Selasky mlx4_ib_qp_sw_comp(qp, num_entries, wc + *npolled, npolled, 1); 6418cc48704SHans Petter Selasky if (*npolled >= num_entries) 6428cc48704SHans Petter Selasky goto out; 6438cc48704SHans Petter Selasky } 6448cc48704SHans Petter Selasky 6458cc48704SHans Petter Selasky list_for_each_entry(qp, &cq->recv_qp_list, cq_recv_list) { 6468cc48704SHans Petter Selasky mlx4_ib_qp_sw_comp(qp, num_entries, wc + *npolled, npolled, 0); 6478cc48704SHans Petter Selasky if (*npolled >= num_entries) 6488cc48704SHans Petter Selasky goto out; 6498cc48704SHans Petter Selasky } 6508cc48704SHans Petter Selasky 6518cc48704SHans Petter Selasky out: 6528cc48704SHans Petter Selasky return; 65397549c34SHans Petter Selasky } 65497549c34SHans Petter Selasky 65597549c34SHans Petter Selasky static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq, 65697549c34SHans Petter Selasky struct mlx4_ib_qp **cur_qp, 65797549c34SHans Petter Selasky struct ib_wc *wc) 65897549c34SHans Petter Selasky { 65997549c34SHans Petter Selasky struct mlx4_cqe *cqe; 66097549c34SHans Petter Selasky struct mlx4_qp *mqp; 66197549c34SHans Petter Selasky struct mlx4_ib_wq *wq; 66297549c34SHans Petter Selasky struct mlx4_ib_srq *srq; 66397549c34SHans Petter Selasky struct mlx4_srq *msrq = NULL; 66497549c34SHans Petter Selasky int is_send; 66597549c34SHans Petter Selasky int is_error; 6668cc48704SHans Petter Selasky int is_eth; 66797549c34SHans Petter Selasky u32 g_mlpath_rqpn; 66897549c34SHans Petter Selasky u16 wqe_ctr; 66997549c34SHans Petter Selasky unsigned tail = 0; 67097549c34SHans Petter Selasky 67197549c34SHans Petter Selasky repoll: 67297549c34SHans Petter Selasky cqe = next_cqe_sw(cq); 67397549c34SHans Petter Selasky if (!cqe) 67497549c34SHans Petter Selasky return -EAGAIN; 67597549c34SHans Petter Selasky 67697549c34SHans Petter Selasky if (cq->buf.entry_size == 64) 67797549c34SHans Petter Selasky cqe++; 67897549c34SHans Petter Selasky 67997549c34SHans Petter Selasky ++cq->mcq.cons_index; 68097549c34SHans Petter Selasky 68197549c34SHans Petter Selasky /* 68297549c34SHans Petter Selasky * Make sure we read CQ entry contents after we've checked the 68397549c34SHans Petter Selasky * ownership bit. 68497549c34SHans Petter Selasky */ 68597549c34SHans Petter Selasky rmb(); 68697549c34SHans Petter Selasky 68797549c34SHans Petter Selasky is_send = cqe->owner_sr_opcode & MLX4_CQE_IS_SEND_MASK; 68897549c34SHans Petter Selasky is_error = (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == 68997549c34SHans Petter Selasky MLX4_CQE_OPCODE_ERROR; 69097549c34SHans Petter Selasky 69197549c34SHans Petter Selasky /* Resize CQ in progress */ 69297549c34SHans Petter Selasky if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_CQE_OPCODE_RESIZE)) { 69397549c34SHans Petter Selasky if (cq->resize_buf) { 69497549c34SHans Petter Selasky struct mlx4_ib_dev *dev = to_mdev(cq->ibcq.device); 69597549c34SHans Petter Selasky 69697549c34SHans Petter Selasky mlx4_ib_free_cq_buf(dev, &cq->buf, cq->ibcq.cqe); 69797549c34SHans Petter Selasky cq->buf = cq->resize_buf->buf; 69897549c34SHans Petter Selasky cq->ibcq.cqe = cq->resize_buf->cqe; 69997549c34SHans Petter Selasky 70097549c34SHans Petter Selasky kfree(cq->resize_buf); 70197549c34SHans Petter Selasky cq->resize_buf = NULL; 70297549c34SHans Petter Selasky } 70397549c34SHans Petter Selasky 70497549c34SHans Petter Selasky goto repoll; 70597549c34SHans Petter Selasky } 70697549c34SHans Petter Selasky 70797549c34SHans Petter Selasky if (!*cur_qp || 70897549c34SHans Petter Selasky (be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK) != (*cur_qp)->mqp.qpn) { 70997549c34SHans Petter Selasky /* 71097549c34SHans Petter Selasky * We do not have to take the QP table lock here, 71197549c34SHans Petter Selasky * because CQs will be locked while QPs are removed 71297549c34SHans Petter Selasky * from the table. 71397549c34SHans Petter Selasky */ 71497549c34SHans Petter Selasky mqp = __mlx4_qp_lookup(to_mdev(cq->ibcq.device)->dev, 71597549c34SHans Petter Selasky be32_to_cpu(cqe->vlan_my_qpn)); 71697549c34SHans Petter Selasky *cur_qp = to_mibqp(mqp); 71797549c34SHans Petter Selasky } 71897549c34SHans Petter Selasky 71997549c34SHans Petter Selasky wc->qp = &(*cur_qp)->ibqp; 72097549c34SHans Petter Selasky 72197549c34SHans Petter Selasky if (wc->qp->qp_type == IB_QPT_XRC_TGT) { 72297549c34SHans Petter Selasky u32 srq_num; 72397549c34SHans Petter Selasky g_mlpath_rqpn = be32_to_cpu(cqe->g_mlpath_rqpn); 72497549c34SHans Petter Selasky srq_num = g_mlpath_rqpn & 0xffffff; 72597549c34SHans Petter Selasky /* SRQ is also in the radix tree */ 72697549c34SHans Petter Selasky msrq = mlx4_srq_lookup(to_mdev(cq->ibcq.device)->dev, 72797549c34SHans Petter Selasky srq_num); 72897549c34SHans Petter Selasky } 72997549c34SHans Petter Selasky 73097549c34SHans Petter Selasky if (is_send) { 73197549c34SHans Petter Selasky wq = &(*cur_qp)->sq; 73297549c34SHans Petter Selasky if (!(*cur_qp)->sq_signal_bits) { 73397549c34SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe->wqe_index); 73497549c34SHans Petter Selasky wq->tail += (u16) (wqe_ctr - (u16) wq->tail); 73597549c34SHans Petter Selasky } 73697549c34SHans Petter Selasky wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)]; 73797549c34SHans Petter Selasky ++wq->tail; 73897549c34SHans Petter Selasky } else if ((*cur_qp)->ibqp.srq) { 73997549c34SHans Petter Selasky srq = to_msrq((*cur_qp)->ibqp.srq); 74097549c34SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe->wqe_index); 74197549c34SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 74297549c34SHans Petter Selasky mlx4_ib_free_srq_wqe(srq, wqe_ctr); 74397549c34SHans Petter Selasky } else if (msrq) { 74497549c34SHans Petter Selasky srq = to_mibsrq(msrq); 74597549c34SHans Petter Selasky wqe_ctr = be16_to_cpu(cqe->wqe_index); 74697549c34SHans Petter Selasky wc->wr_id = srq->wrid[wqe_ctr]; 74797549c34SHans Petter Selasky mlx4_ib_free_srq_wqe(srq, wqe_ctr); 74897549c34SHans Petter Selasky } else { 74997549c34SHans Petter Selasky wq = &(*cur_qp)->rq; 75097549c34SHans Petter Selasky tail = wq->tail & (wq->wqe_cnt - 1); 75197549c34SHans Petter Selasky wc->wr_id = wq->wrid[tail]; 75297549c34SHans Petter Selasky ++wq->tail; 75397549c34SHans Petter Selasky } 75497549c34SHans Petter Selasky 75597549c34SHans Petter Selasky if (unlikely(is_error)) { 75697549c34SHans Petter Selasky mlx4_ib_handle_error_cqe((struct mlx4_err_cqe *) cqe, wc); 75797549c34SHans Petter Selasky return 0; 75897549c34SHans Petter Selasky } 75997549c34SHans Petter Selasky 76097549c34SHans Petter Selasky wc->status = IB_WC_SUCCESS; 76197549c34SHans Petter Selasky 76297549c34SHans Petter Selasky if (is_send) { 76397549c34SHans Petter Selasky wc->wc_flags = 0; 76497549c34SHans Petter Selasky switch (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) { 76597549c34SHans Petter Selasky case MLX4_OPCODE_RDMA_WRITE_IMM: 76697549c34SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 76797549c34SHans Petter Selasky case MLX4_OPCODE_RDMA_WRITE: 76897549c34SHans Petter Selasky wc->opcode = IB_WC_RDMA_WRITE; 76997549c34SHans Petter Selasky break; 77097549c34SHans Petter Selasky case MLX4_OPCODE_SEND_IMM: 77197549c34SHans Petter Selasky wc->wc_flags |= IB_WC_WITH_IMM; 77297549c34SHans Petter Selasky case MLX4_OPCODE_SEND: 77397549c34SHans Petter Selasky case MLX4_OPCODE_SEND_INVAL: 77497549c34SHans Petter Selasky wc->opcode = IB_WC_SEND; 77597549c34SHans Petter Selasky break; 77697549c34SHans Petter Selasky case MLX4_OPCODE_RDMA_READ: 77797549c34SHans Petter Selasky wc->opcode = IB_WC_RDMA_READ; 77897549c34SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 77997549c34SHans Petter Selasky break; 78097549c34SHans Petter Selasky case MLX4_OPCODE_ATOMIC_CS: 78197549c34SHans Petter Selasky wc->opcode = IB_WC_COMP_SWAP; 78297549c34SHans Petter Selasky wc->byte_len = 8; 78397549c34SHans Petter Selasky break; 78497549c34SHans Petter Selasky case MLX4_OPCODE_ATOMIC_FA: 78597549c34SHans Petter Selasky wc->opcode = IB_WC_FETCH_ADD; 78697549c34SHans Petter Selasky wc->byte_len = 8; 78797549c34SHans Petter Selasky break; 78897549c34SHans Petter Selasky case MLX4_OPCODE_MASKED_ATOMIC_CS: 78997549c34SHans Petter Selasky wc->opcode = IB_WC_MASKED_COMP_SWAP; 79097549c34SHans Petter Selasky wc->byte_len = 8; 79197549c34SHans Petter Selasky break; 79297549c34SHans Petter Selasky case MLX4_OPCODE_MASKED_ATOMIC_FA: 79397549c34SHans Petter Selasky wc->opcode = IB_WC_MASKED_FETCH_ADD; 79497549c34SHans Petter Selasky wc->byte_len = 8; 79597549c34SHans Petter Selasky break; 79697549c34SHans Petter Selasky case MLX4_OPCODE_LSO: 79797549c34SHans Petter Selasky wc->opcode = IB_WC_LSO; 79897549c34SHans Petter Selasky break; 79997549c34SHans Petter Selasky case MLX4_OPCODE_FMR: 8008cc48704SHans Petter Selasky wc->opcode = IB_WC_REG_MR; 80197549c34SHans Petter Selasky break; 80297549c34SHans Petter Selasky case MLX4_OPCODE_LOCAL_INVAL: 80397549c34SHans Petter Selasky wc->opcode = IB_WC_LOCAL_INV; 80497549c34SHans Petter Selasky break; 80597549c34SHans Petter Selasky } 80697549c34SHans Petter Selasky } else { 80797549c34SHans Petter Selasky wc->byte_len = be32_to_cpu(cqe->byte_cnt); 80897549c34SHans Petter Selasky 80997549c34SHans Petter Selasky switch (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) { 81097549c34SHans Petter Selasky case MLX4_RECV_OPCODE_RDMA_WRITE_IMM: 81197549c34SHans Petter Selasky wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; 81297549c34SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 81397549c34SHans Petter Selasky wc->ex.imm_data = cqe->immed_rss_invalid; 81497549c34SHans Petter Selasky break; 81597549c34SHans Petter Selasky case MLX4_RECV_OPCODE_SEND_INVAL: 81697549c34SHans Petter Selasky wc->opcode = IB_WC_RECV; 81797549c34SHans Petter Selasky wc->wc_flags = IB_WC_WITH_INVALIDATE; 81897549c34SHans Petter Selasky wc->ex.invalidate_rkey = be32_to_cpu(cqe->immed_rss_invalid); 81997549c34SHans Petter Selasky break; 82097549c34SHans Petter Selasky case MLX4_RECV_OPCODE_SEND: 82197549c34SHans Petter Selasky wc->opcode = IB_WC_RECV; 82297549c34SHans Petter Selasky wc->wc_flags = 0; 82397549c34SHans Petter Selasky break; 82497549c34SHans Petter Selasky case MLX4_RECV_OPCODE_SEND_IMM: 82597549c34SHans Petter Selasky wc->opcode = IB_WC_RECV; 82697549c34SHans Petter Selasky wc->wc_flags = IB_WC_WITH_IMM; 82797549c34SHans Petter Selasky wc->ex.imm_data = cqe->immed_rss_invalid; 82897549c34SHans Petter Selasky break; 82997549c34SHans Petter Selasky } 83097549c34SHans Petter Selasky 8318cc48704SHans Petter Selasky is_eth = (rdma_port_get_link_layer(wc->qp->device, 8328cc48704SHans Petter Selasky (*cur_qp)->port) == 8338cc48704SHans Petter Selasky IB_LINK_LAYER_ETHERNET); 83497549c34SHans Petter Selasky if (mlx4_is_mfunc(to_mdev(cq->ibcq.device)->dev)) { 83597549c34SHans Petter Selasky if ((*cur_qp)->mlx4_ib_qp_type & 83697549c34SHans Petter Selasky (MLX4_IB_QPT_PROXY_SMI_OWNER | 8378cc48704SHans Petter Selasky MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI)) { 8388cc48704SHans Petter Selasky use_tunnel_data(*cur_qp, cq, wc, tail, cqe, 8398cc48704SHans Petter Selasky is_eth); 8408cc48704SHans Petter Selasky return 0; 8418cc48704SHans Petter Selasky } 84297549c34SHans Petter Selasky } 84397549c34SHans Petter Selasky 84497549c34SHans Petter Selasky wc->slid = be16_to_cpu(cqe->rlid); 84597549c34SHans Petter Selasky g_mlpath_rqpn = be32_to_cpu(cqe->g_mlpath_rqpn); 84697549c34SHans Petter Selasky wc->src_qp = g_mlpath_rqpn & 0xffffff; 84797549c34SHans Petter Selasky wc->dlid_path_bits = (g_mlpath_rqpn >> 24) & 0x7f; 84897549c34SHans Petter Selasky wc->wc_flags |= g_mlpath_rqpn & 0x80000000 ? IB_WC_GRH : 0; 84997549c34SHans Petter Selasky wc->pkey_index = be32_to_cpu(cqe->immed_rss_invalid) & 0x7f; 85097549c34SHans Petter Selasky wc->wc_flags |= mlx4_ib_ipoib_csum_ok(cqe->status, 85197549c34SHans Petter Selasky cqe->checksum) ? IB_WC_IP_CSUM_OK : 0; 8528cc48704SHans Petter Selasky if (is_eth) { 85397549c34SHans Petter Selasky wc->sl = be16_to_cpu(cqe->sl_vid) >> 13; 8548cc48704SHans Petter Selasky if (be32_to_cpu(cqe->vlan_my_qpn) & 8558cc48704SHans Petter Selasky MLX4_CQE_CVLAN_PRESENT_MASK) { 85697549c34SHans Petter Selasky wc->vlan_id = be16_to_cpu(cqe->sl_vid) & 85797549c34SHans Petter Selasky MLX4_CQE_VID_MASK; 85897549c34SHans Petter Selasky } else { 85997549c34SHans Petter Selasky wc->vlan_id = 0xffff; 86097549c34SHans Petter Selasky } 8618cc48704SHans Petter Selasky memcpy(wc->smac, cqe->smac, ETH_ALEN); 8628cc48704SHans Petter Selasky wc->wc_flags |= (IB_WC_WITH_VLAN | IB_WC_WITH_SMAC); 8638cc48704SHans Petter Selasky } else { 8648cc48704SHans Petter Selasky wc->sl = be16_to_cpu(cqe->sl_vid) >> 12; 8658cc48704SHans Petter Selasky wc->vlan_id = 0xffff; 86697549c34SHans Petter Selasky } 86797549c34SHans Petter Selasky } 86897549c34SHans Petter Selasky 86997549c34SHans Petter Selasky return 0; 87097549c34SHans Petter Selasky } 87197549c34SHans Petter Selasky 87297549c34SHans Petter Selasky int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 87397549c34SHans Petter Selasky { 87497549c34SHans Petter Selasky struct mlx4_ib_cq *cq = to_mcq(ibcq); 87597549c34SHans Petter Selasky struct mlx4_ib_qp *cur_qp = NULL; 87697549c34SHans Petter Selasky unsigned long flags; 87797549c34SHans Petter Selasky int npolled; 8788cc48704SHans Petter Selasky struct mlx4_ib_dev *mdev = to_mdev(cq->ibcq.device); 87997549c34SHans Petter Selasky 88097549c34SHans Petter Selasky spin_lock_irqsave(&cq->lock, flags); 8816428c27fSHans Petter Selasky if (unlikely(mdev->dev->persist->state & 8826428c27fSHans Petter Selasky MLX4_DEVICE_STATE_INTERNAL_ERROR)) { 8838cc48704SHans Petter Selasky mlx4_ib_poll_sw_comp(cq, num_entries, wc, &npolled); 8848cc48704SHans Petter Selasky goto out; 8858cc48704SHans Petter Selasky } 88697549c34SHans Petter Selasky 88797549c34SHans Petter Selasky for (npolled = 0; npolled < num_entries; ++npolled) { 8888cc48704SHans Petter Selasky if (mlx4_ib_poll_one(cq, &cur_qp, wc + npolled)) 88997549c34SHans Petter Selasky break; 89097549c34SHans Petter Selasky } 89197549c34SHans Petter Selasky 89297549c34SHans Petter Selasky mlx4_cq_set_ci(&cq->mcq); 89397549c34SHans Petter Selasky 8948cc48704SHans Petter Selasky out: 89597549c34SHans Petter Selasky spin_unlock_irqrestore(&cq->lock, flags); 89697549c34SHans Petter Selasky 89797549c34SHans Petter Selasky return npolled; 89897549c34SHans Petter Selasky } 89997549c34SHans Petter Selasky 90097549c34SHans Petter Selasky int mlx4_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 90197549c34SHans Petter Selasky { 9026428c27fSHans Petter Selasky struct mlx4_ib_cq *cq = to_mcq(ibcq); 9036428c27fSHans Petter Selasky struct mlx4_ib_dev *mdev = to_mdev(cq->ibcq.device); 9046428c27fSHans Petter Selasky 9056428c27fSHans Petter Selasky if (unlikely(mdev->dev->persist->state & 9066428c27fSHans Petter Selasky MLX4_DEVICE_STATE_INTERNAL_ERROR)) 9076428c27fSHans Petter Selasky return -1; 9086428c27fSHans Petter Selasky 9096428c27fSHans Petter Selasky mlx4_cq_arm(&cq->mcq, 91097549c34SHans Petter Selasky (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ? 91197549c34SHans Petter Selasky MLX4_CQ_DB_REQ_NOT_SOL : MLX4_CQ_DB_REQ_NOT, 9126428c27fSHans Petter Selasky mdev->uar_map, 9136428c27fSHans Petter Selasky MLX4_GET_DOORBELL_LOCK(&mdev->uar_lock)); 91497549c34SHans Petter Selasky 91597549c34SHans Petter Selasky return 0; 91697549c34SHans Petter Selasky } 91797549c34SHans Petter Selasky 91897549c34SHans Petter Selasky void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq) 91997549c34SHans Petter Selasky { 92097549c34SHans Petter Selasky u32 prod_index; 92197549c34SHans Petter Selasky int nfreed = 0; 92297549c34SHans Petter Selasky struct mlx4_cqe *cqe, *dest; 92397549c34SHans Petter Selasky u8 owner_bit; 92497549c34SHans Petter Selasky int cqe_inc = cq->buf.entry_size == 64 ? 1 : 0; 92597549c34SHans Petter Selasky 92697549c34SHans Petter Selasky /* 92797549c34SHans Petter Selasky * First we need to find the current producer index, so we 92897549c34SHans Petter Selasky * know where to start cleaning from. It doesn't matter if HW 92997549c34SHans Petter Selasky * adds new entries after this loop -- the QP we're worried 93097549c34SHans Petter Selasky * about is already in RESET, so the new entries won't come 93197549c34SHans Petter Selasky * from our QP and therefore don't need to be checked. 93297549c34SHans Petter Selasky */ 93397549c34SHans Petter Selasky for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); ++prod_index) 93497549c34SHans Petter Selasky if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe) 93597549c34SHans Petter Selasky break; 93697549c34SHans Petter Selasky 93797549c34SHans Petter Selasky /* 93897549c34SHans Petter Selasky * Now sweep backwards through the CQ, removing CQ entries 93997549c34SHans Petter Selasky * that match our QP by copying older entries on top of them. 94097549c34SHans Petter Selasky */ 94197549c34SHans Petter Selasky while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) { 94297549c34SHans Petter Selasky cqe = get_cqe(cq, prod_index & cq->ibcq.cqe); 94397549c34SHans Petter Selasky cqe += cqe_inc; 94497549c34SHans Petter Selasky 94597549c34SHans Petter Selasky if ((be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK) == qpn) { 94697549c34SHans Petter Selasky if (srq && !(cqe->owner_sr_opcode & MLX4_CQE_IS_SEND_MASK)) 94797549c34SHans Petter Selasky mlx4_ib_free_srq_wqe(srq, be16_to_cpu(cqe->wqe_index)); 94897549c34SHans Petter Selasky ++nfreed; 94997549c34SHans Petter Selasky } else if (nfreed) { 95097549c34SHans Petter Selasky dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe); 95197549c34SHans Petter Selasky dest += cqe_inc; 95297549c34SHans Petter Selasky 95397549c34SHans Petter Selasky owner_bit = dest->owner_sr_opcode & MLX4_CQE_OWNER_MASK; 95497549c34SHans Petter Selasky memcpy(dest, cqe, sizeof *cqe); 95597549c34SHans Petter Selasky dest->owner_sr_opcode = owner_bit | 95697549c34SHans Petter Selasky (dest->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK); 95797549c34SHans Petter Selasky } 95897549c34SHans Petter Selasky } 95997549c34SHans Petter Selasky 96097549c34SHans Petter Selasky if (nfreed) { 96197549c34SHans Petter Selasky cq->mcq.cons_index += nfreed; 96297549c34SHans Petter Selasky /* 96397549c34SHans Petter Selasky * Make sure update of buffer contents is done before 96497549c34SHans Petter Selasky * updating consumer index. 96597549c34SHans Petter Selasky */ 96697549c34SHans Petter Selasky wmb(); 96797549c34SHans Petter Selasky mlx4_cq_set_ci(&cq->mcq); 96897549c34SHans Petter Selasky } 96997549c34SHans Petter Selasky } 97097549c34SHans Petter Selasky 97197549c34SHans Petter Selasky void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq) 97297549c34SHans Petter Selasky { 97397549c34SHans Petter Selasky spin_lock_irq(&cq->lock); 97497549c34SHans Petter Selasky __mlx4_ib_cq_clean(cq, qpn, srq); 97597549c34SHans Petter Selasky spin_unlock_irq(&cq->lock); 97697549c34SHans Petter Selasky } 977