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Message-Id: <1453318816-21672-10-git-send-email-faisal.latif@intel.com>
Date: Wed, 20 Jan 2016 13:40:09 -0600
From: Faisal Latif <faisal.latif@...el.com>
To: dledford@...hat.com
Cc: linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
jeffrey.t.kirsher@...el.com, e1000-rdma@...ts.sourceforge.net,
Faisal Latif <faisal.latif@...el.com>
Subject: [PATCH v3 09/16] i40iw: add files for iwarp interface
i40iw_verbs.[ch] are to handle iwarp interface.
Changes since v2:
Made infiniband interface changes for 4.5
removed i40iw_reg_phys_mr() for 4.5
made changes as made by Christoph Hellwig made for nes
in i40iw_get_dma_mr().
Changes since v1:
Following modification based on Christoph Hellwig's feedback
-remove kmap() calls and moved to i40iw_cm.c.
-cleanup some of casts
Acked-by: Anjali Singhai Jain <anjali.singhai@...el.com>
Acked-by: Shannon Nelson <shannon.nelson@...el.com>
Signed-off-by: Faisal Latif <faisal.latif@...el.com>
---
drivers/infiniband/hw/i40iw/i40iw_ucontext.h | 107 ++
drivers/infiniband/hw/i40iw/i40iw_verbs.c | 2434 ++++++++++++++++++++++++++
drivers/infiniband/hw/i40iw/i40iw_verbs.h | 173 ++
3 files changed, 2714 insertions(+)
create mode 100644 drivers/infiniband/hw/i40iw/i40iw_ucontext.h
create mode 100644 drivers/infiniband/hw/i40iw/i40iw_verbs.c
create mode 100644 drivers/infiniband/hw/i40iw/i40iw_verbs.h
diff --git a/drivers/infiniband/hw/i40iw/i40iw_ucontext.h b/drivers/infiniband/hw/i40iw/i40iw_ucontext.h
new file mode 100644
index 0000000..12acd68
--- /dev/null
+++ b/drivers/infiniband/hw/i40iw/i40iw_ucontext.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2006 - 2016 Intel Corporation. All rights reserved.
+ * Copyright (c) 2005 Topspin Communications. All rights reserved.
+ * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef I40IW_USER_CONTEXT_H
+#define I40IW_USER_CONTEXT_H
+
+#include <linux/types.h>
+
+#define I40IW_ABI_USERSPACE_VER 4
+#define I40IW_ABI_KERNEL_VER 4
+struct i40iw_alloc_ucontext_req {
+ __u32 reserved32;
+ __u8 userspace_ver;
+ __u8 reserved8[3];
+};
+
+struct i40iw_alloc_ucontext_resp {
+ __u32 max_pds; /* maximum pds allowed for this user process */
+ __u32 max_qps; /* maximum qps allowed for this user process */
+ __u32 wq_size; /* size of the WQs (sq+rq) allocated to the mmaped area */
+ __u8 kernel_ver;
+ __u8 reserved[3];
+};
+
+struct i40iw_alloc_pd_resp {
+ __u32 pd_id;
+ __u8 reserved[4];
+};
+
+struct i40iw_create_cq_req {
+ __u64 user_cq_buffer;
+ __u64 user_shadow_area;
+};
+
+struct i40iw_create_qp_req {
+ __u64 user_wqe_buffers;
+ __u64 user_compl_ctx;
+
+ /* UDA QP PHB */
+ __u64 user_sq_phb; /* place for VA of the sq phb buff */
+ __u64 user_rq_phb; /* place for VA of the rq phb buff */
+};
+
+enum i40iw_memreg_type {
+ IW_MEMREG_TYPE_MEM = 0x0000,
+ IW_MEMREG_TYPE_QP = 0x0001,
+ IW_MEMREG_TYPE_CQ = 0x0002,
+};
+
+struct i40iw_mem_reg_req {
+ __u16 reg_type; /* Memory, QP or CQ */
+ __u16 cq_pages;
+ __u16 rq_pages;
+ __u16 sq_pages;
+};
+
+struct i40iw_create_cq_resp {
+ __u32 cq_id;
+ __u32 cq_size;
+ __u32 mmap_db_index;
+ __u32 reserved;
+};
+
+struct i40iw_create_qp_resp {
+ __u32 qp_id;
+ __u32 actual_sq_size;
+ __u32 actual_rq_size;
+ __u32 i40iw_drv_opt;
+ __u16 push_idx;
+ __u8 lsmm;
+ __u8 rsvd2;
+};
+
+#endif
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
new file mode 100644
index 0000000..c5c9805
--- /dev/null
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -0,0 +1,2434 @@
+/*******************************************************************************
+*
+* Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
+*
+* This software is available to you under a choice of one of two
+* licenses. You may choose to be licensed under the terms of the GNU
+* General Public License (GPL) Version 2, available from the file
+* COPYING in the main directory of this source tree, or the
+* OpenFabrics.org BSD license below:
+*
+* Redistribution and use in source and binary forms, with or
+* without modification, are permitted provided that the following
+* conditions are met:
+*
+* - Redistributions of source code must retain the above
+* copyright notice, this list of conditions and the following
+* disclaimer.
+*
+* - Redistributions in binary form must reproduce the above
+* copyright notice, this list of conditions and the following
+* disclaimer in the documentation and/or other materials
+* provided with the distribution.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+*******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/random.h>
+#include <linux/highmem.h>
+#include <linux/time.h>
+#include <asm/byteorder.h>
+#include <net/ip.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/iw_cm.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_umem.h>
+#include "i40iw.h"
+
+/**
+ * i40iw_query_device - get device attributes
+ * @ibdev: device pointer from stack
+ * @props: returning device attributes
+ * @udata: user data
+ */
+static int i40iw_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props,
+ struct ib_udata *udata)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+
+ if (udata->inlen || udata->outlen)
+ return -EINVAL;
+ memset(props, 0, sizeof(*props));
+ ether_addr_copy((u8 *)&props->sys_image_guid, iwdev->netdev->dev_addr);
+ props->fw_ver = I40IW_FW_VERSION;
+ props->device_cap_flags = iwdev->device_cap_flags;
+ props->vendor_id = iwdev->vendor_id;
+ props->vendor_part_id = iwdev->vendor_part_id;
+ props->hw_ver = (u32)iwdev->sc_dev.hw_rev;
+ props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
+ props->max_qp = iwdev->max_qp;
+ props->max_qp_wr = (I40IW_MAX_WQ_ENTRIES >> 2) - 1;
+ props->max_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
+ props->max_cq = iwdev->max_cq;
+ props->max_cqe = iwdev->max_cqe;
+ props->max_mr = iwdev->max_mr;
+ props->max_pd = iwdev->max_pd;
+ props->max_sge_rd = 1;
+ props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE;
+ props->max_qp_init_rd_atom = props->max_qp_rd_atom;
+ props->atomic_cap = IB_ATOMIC_NONE;
+ props->max_map_per_fmr = 1;
+ return 0;
+}
+
+/**
+ * i40iw_query_port - get port attrubutes
+ * @ibdev: device pointer from stack
+ * @port: port number for query
+ * @props: returning device attributes
+ */
+static int i40iw_query_port(struct ib_device *ibdev,
+ u8 port,
+ struct ib_port_attr *props)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+ struct net_device *netdev = iwdev->netdev;
+
+ memset(props, 0, sizeof(*props));
+
+ props->max_mtu = IB_MTU_4096;
+ if (netdev->mtu >= 4096)
+ props->active_mtu = IB_MTU_4096;
+ else if (netdev->mtu >= 2048)
+ props->active_mtu = IB_MTU_2048;
+ else if (netdev->mtu >= 1024)
+ props->active_mtu = IB_MTU_1024;
+ else if (netdev->mtu >= 512)
+ props->active_mtu = IB_MTU_512;
+ else
+ props->active_mtu = IB_MTU_256;
+
+ props->lid = 1;
+ if (netif_carrier_ok(iwdev->netdev))
+ props->state = IB_PORT_ACTIVE;
+ else
+ props->state = IB_PORT_DOWN;
+ props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
+ IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
+ props->gid_tbl_len = 1;
+ props->pkey_tbl_len = 1;
+ props->active_width = IB_WIDTH_4X;
+ props->active_speed = 1;
+ props->max_msg_sz = 0x80000000;
+ return 0;
+}
+
+/**
+ * i40iw_alloc_ucontext - Allocate the user context data structure
+ * @ibdev: device pointer from stack
+ * @udata: user data
+ *
+ * This keeps track of all objects associated with a particular
+ * user-mode client.
+ */
+static struct ib_ucontext *i40iw_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+ struct i40iw_alloc_ucontext_req req;
+ struct i40iw_alloc_ucontext_resp uresp;
+ struct i40iw_ucontext *ucontext;
+
+ if (ib_copy_from_udata(&req, udata, sizeof(req)))
+ return ERR_PTR(-EINVAL);
+
+ if (req.userspace_ver != I40IW_ABI_USERSPACE_VER) {
+ i40iw_pr_err("Invalid userspace driver version detected. Detected version %d, should be %d\n",
+ req.userspace_ver, I40IW_ABI_USERSPACE_VER);
+ return ERR_PTR(-EINVAL);
+ }
+
+ memset(&uresp, 0, sizeof(uresp));
+ uresp.max_qps = iwdev->max_qp;
+ uresp.max_pds = iwdev->max_pd;
+ uresp.wq_size = iwdev->max_qp_wr * 2;
+ uresp.kernel_ver = I40IW_ABI_KERNEL_VER;
+
+ ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
+ if (!ucontext)
+ return ERR_PTR(-ENOMEM);
+
+ ucontext->iwdev = iwdev;
+
+ if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
+ kfree(ucontext);
+ return ERR_PTR(-EFAULT);
+ }
+
+ INIT_LIST_HEAD(&ucontext->cq_reg_mem_list);
+ spin_lock_init(&ucontext->cq_reg_mem_list_lock);
+ INIT_LIST_HEAD(&ucontext->qp_reg_mem_list);
+ spin_lock_init(&ucontext->qp_reg_mem_list_lock);
+
+ return &ucontext->ibucontext;
+}
+
+/**
+ * i40iw_dealloc_ucontext - deallocate the user context data structure
+ * @context: user context created during alloc
+ */
+static int i40iw_dealloc_ucontext(struct ib_ucontext *context)
+{
+ struct i40iw_ucontext *ucontext = to_ucontext(context);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
+ if (!list_empty(&ucontext->cq_reg_mem_list)) {
+ spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
+ return -EBUSY;
+ }
+ spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
+ spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
+ if (!list_empty(&ucontext->qp_reg_mem_list)) {
+ spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
+ return -EBUSY;
+ }
+ spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
+
+ kfree(ucontext);
+ return 0;
+}
+
+/**
+ * i40iw_mmap - user memory map
+ * @context: context created during alloc
+ * @vma: kernel info for user memory map
+ */
+static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+ struct i40iw_ucontext *ucontext;
+ u64 db_addr_offset;
+ u64 push_offset;
+
+ ucontext = to_ucontext(context);
+ if (ucontext->iwdev->sc_dev.is_pf) {
+ db_addr_offset = I40IW_DB_ADDR_OFFSET;
+ push_offset = I40IW_PUSH_OFFSET;
+ if (vma->vm_pgoff)
+ vma->vm_pgoff += I40IW_PF_FIRST_PUSH_PAGE_INDEX - 1;
+ } else {
+ db_addr_offset = I40IW_VF_DB_ADDR_OFFSET;
+ push_offset = I40IW_VF_PUSH_OFFSET;
+ if (vma->vm_pgoff)
+ vma->vm_pgoff += I40IW_VF_FIRST_PUSH_PAGE_INDEX - 1;
+ }
+
+ vma->vm_pgoff += db_addr_offset >> PAGE_SHIFT;
+
+ if (vma->vm_pgoff == (db_addr_offset >> PAGE_SHIFT)) {
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ vma->vm_private_data = ucontext;
+ } else {
+ if ((vma->vm_pgoff - (push_offset >> PAGE_SHIFT)) % 2)
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ else
+ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ }
+
+ if (io_remap_pfn_range(vma, vma->vm_start,
+ vma->vm_pgoff + (pci_resource_start(ucontext->iwdev->ldev->pcidev, 0) >> PAGE_SHIFT),
+ PAGE_SIZE, vma->vm_page_prot))
+ return -EAGAIN;
+
+ return 0;
+}
+
+/**
+ * i40iw_alloc_push_page - allocate a push page for qp
+ * @iwdev: iwarp device
+ * @qp: hardware control qp
+ */
+static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
+{
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ enum i40iw_status_code status;
+
+ if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX)
+ return;
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
+ if (!cqp_request)
+ return;
+
+ atomic_inc(&cqp_request->refcount);
+
+ cqp_info = &cqp_request->info;
+ cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
+ cqp_info->post_sq = 1;
+
+ cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
+ cqp_info->in.u.manage_push_page.info.free_page = 0;
+ cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
+ cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
+
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (!status)
+ qp->push_idx = cqp_request->compl_info.op_ret_val;
+ else
+ i40iw_pr_err("CQP-OP Push page fail");
+ i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
+}
+
+/**
+ * i40iw_dealloc_push_page - free a push page for qp
+ * @iwdev: iwarp device
+ * @qp: hardware control qp
+ */
+static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
+{
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ enum i40iw_status_code status;
+
+ if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
+ return;
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
+ if (!cqp_request)
+ return;
+
+ cqp_info = &cqp_request->info;
+ cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
+ cqp_info->post_sq = 1;
+
+ cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
+ cqp_info->in.u.manage_push_page.info.qs_handle = dev->qs_handle;
+ cqp_info->in.u.manage_push_page.info.free_page = 1;
+ cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
+ cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
+
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (!status)
+ qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
+ else
+ i40iw_pr_err("CQP-OP Push page fail");
+}
+
+/**
+ * i40iw_alloc_pd - allocate protection domain
+ * @ibdev: device pointer from stack
+ * @context: user context created during alloc
+ * @udata: user data
+ */
+static struct ib_pd *i40iw_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct i40iw_pd *iwpd;
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ struct i40iw_alloc_pd_resp uresp;
+ struct i40iw_sc_pd *sc_pd;
+ u32 pd_id = 0;
+ int err;
+
+ err = i40iw_alloc_resource(iwdev, iwdev->allocated_pds,
+ iwdev->max_pd, &pd_id, &iwdev->next_pd);
+ if (err) {
+ i40iw_pr_err("alloc resource failed\n");
+ return ERR_PTR(err);
+ }
+
+ iwpd = kzalloc(sizeof(*iwpd), GFP_KERNEL);
+ if (!iwpd) {
+ err = -ENOMEM;
+ goto free_res;
+ }
+
+ sc_pd = &iwpd->sc_pd;
+ dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id);
+
+ if (context) {
+ memset(&uresp, 0, sizeof(uresp));
+ uresp.pd_id = pd_id;
+ if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
+ err = -EFAULT;
+ goto error;
+ }
+ }
+
+ i40iw_add_pdusecount(iwpd);
+ return &iwpd->ibpd;
+error:
+ kfree(iwpd);
+free_res:
+ i40iw_free_resource(iwdev, iwdev->allocated_pds, pd_id);
+ return ERR_PTR(err);
+}
+
+/**
+ * i40iw_dealloc_pd - deallocate pd
+ * @ibpd: ptr of pd to be deallocated
+ */
+static int i40iw_dealloc_pd(struct ib_pd *ibpd)
+{
+ struct i40iw_pd *iwpd = to_iwpd(ibpd);
+ struct i40iw_device *iwdev = to_iwdev(ibpd->device);
+
+ i40iw_rem_pdusecount(iwpd, iwdev);
+ return 0;
+}
+
+/**
+ * i40iw_qp_roundup - return round up qp ring size
+ * @wr_ring_size: ring size to round up
+ */
+static int i40iw_qp_roundup(u32 wr_ring_size)
+{
+ int scount = 1;
+
+ if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
+ wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
+
+ for (wr_ring_size--; scount <= 16; scount *= 2)
+ wr_ring_size |= wr_ring_size >> scount;
+ return ++wr_ring_size;
+}
+
+/**
+ * i40iw_get_pbl - Retrieve pbl from a list given a virtual
+ * address
+ * @va: user virtual address
+ * @pbl_list: pbl list to search in (QP's or CQ's)
+ */
+static struct i40iw_pbl *i40iw_get_pbl(unsigned long va,
+ struct list_head *pbl_list)
+{
+ struct i40iw_pbl *iwpbl;
+
+ list_for_each_entry(iwpbl, pbl_list, list) {
+ if (iwpbl->user_base == va) {
+ list_del(&iwpbl->list);
+ return iwpbl;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * i40iw_free_qp_resources - free up memory resources for qp
+ * @iwdev: iwarp device
+ * @iwqp: qp ptr (user or kernel)
+ * @qp_num: qp number assigned
+ */
+void i40iw_free_qp_resources(struct i40iw_device *iwdev,
+ struct i40iw_qp *iwqp,
+ u32 qp_num)
+{
+ i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
+ if (qp_num)
+ i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
+ i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->q2_ctx_mem);
+ i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->kqp.dma_mem);
+ kfree(iwqp->kqp.wrid_mem);
+ iwqp->kqp.wrid_mem = NULL;
+ kfree(iwqp->allocated_buffer);
+ iwqp->allocated_buffer = NULL;
+}
+
+/**
+ * i40iw_clean_cqes - clean cq entries for qp
+ * @iwqp: qp ptr (user or kernel)
+ * @iwcq: cq ptr
+ */
+static void i40iw_clean_cqes(struct i40iw_qp *iwqp, struct i40iw_cq *iwcq)
+{
+ struct i40iw_cq_uk *ukcq = &iwcq->sc_cq.cq_uk;
+
+ ukcq->ops.iw_cq_clean(&iwqp->sc_qp.qp_uk, ukcq);
+}
+
+/**
+ * i40iw_destroy_qp - destroy qp
+ * @ibqp: qp's ib pointer also to get to device's qp address
+ */
+static int i40iw_destroy_qp(struct ib_qp *ibqp)
+{
+ struct i40iw_qp *iwqp = to_iwqp(ibqp);
+
+ iwqp->destroyed = 1;
+
+ if (iwqp->ibqp_state >= IB_QPS_INIT && iwqp->ibqp_state < IB_QPS_RTS)
+ i40iw_next_iw_state(iwqp, I40IW_QP_STATE_ERROR, 0, 0, 0);
+
+ if (!iwqp->user_mode) {
+ if (iwqp->iwscq) {
+ i40iw_clean_cqes(iwqp, iwqp->iwscq);
+ if (iwqp->iwrcq != iwqp->iwscq)
+ i40iw_clean_cqes(iwqp, iwqp->iwrcq);
+ }
+ }
+
+ i40iw_rem_ref(&iwqp->ibqp);
+ return 0;
+}
+
+/**
+ * i40iw_setup_virt_qp - setup for allocation of virtual qp
+ * @dev: iwarp device
+ * @qp: qp ptr
+ * @init_info: initialize info to return
+ */
+static int i40iw_setup_virt_qp(struct i40iw_device *iwdev,
+ struct i40iw_qp *iwqp,
+ struct i40iw_qp_init_info *init_info)
+{
+ struct i40iw_pbl *iwpbl = iwqp->iwpbl;
+ struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
+
+ iwqp->page = qpmr->sq_page;
+ init_info->shadow_area_pa = cpu_to_le64(qpmr->shadow);
+ if (iwpbl->pbl_allocated) {
+ init_info->virtual_map = true;
+ init_info->sq_pa = qpmr->sq_pbl.idx;
+ init_info->rq_pa = qpmr->rq_pbl.idx;
+ } else {
+ init_info->sq_pa = qpmr->sq_pbl.addr;
+ init_info->rq_pa = qpmr->rq_pbl.addr;
+ }
+ return 0;
+}
+
+/**
+ * i40iw_setup_kmode_qp - setup initialization for kernel mode qp
+ * @iwdev: iwarp device
+ * @iwqp: qp ptr (user or kernel)
+ * @info: initialize info to return
+ */
+static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
+ struct i40iw_qp *iwqp,
+ struct i40iw_qp_init_info *info)
+{
+ struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem;
+ u32 sqdepth, rqdepth;
+ u32 sq_size, rq_size;
+ u8 sqshift, rqshift;
+ u32 size;
+ enum i40iw_status_code status;
+ struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
+
+ ukinfo->max_sq_frag_cnt = I40IW_MAX_WQ_FRAGMENT_COUNT;
+
+ sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
+ rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
+
+ status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, &sqshift);
+ if (!status)
+ status = i40iw_get_wqe_shift(rq_size, ukinfo->max_rq_frag_cnt, &rqshift);
+
+ if (status)
+ return -ENOSYS;
+
+ sqdepth = sq_size << sqshift;
+ rqdepth = rq_size << rqshift;
+
+ size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
+ iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
+
+ ukinfo->sq_wrtrk_array = (struct i40iw_sq_uk_wr_trk_info *)iwqp->kqp.wrid_mem;
+ if (!ukinfo->sq_wrtrk_array)
+ return -ENOMEM;
+
+ ukinfo->rq_wrid_array = (u64 *)&ukinfo->sq_wrtrk_array[sqdepth];
+
+ size = (sqdepth + rqdepth) * I40IW_QP_WQE_MIN_SIZE;
+ size += (I40IW_SHADOW_AREA_SIZE << 3);
+
+ status = i40iw_allocate_dma_mem(iwdev->sc_dev.hw, mem, size, 256);
+ if (status) {
+ kfree(ukinfo->sq_wrtrk_array);
+ ukinfo->sq_wrtrk_array = NULL;
+ return -ENOMEM;
+ }
+
+ ukinfo->sq = mem->va;
+ info->sq_pa = mem->pa;
+
+ ukinfo->rq = &ukinfo->sq[sqdepth];
+ info->rq_pa = info->sq_pa + (sqdepth * I40IW_QP_WQE_MIN_SIZE);
+
+ ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
+ info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
+
+ ukinfo->sq_size = sq_size;
+ ukinfo->rq_size = rq_size;
+ ukinfo->qp_id = iwqp->ibqp.qp_num;
+ return 0;
+}
+
+/**
+ * i40iw_create_qp - create qp
+ * @ibpd: ptr of pd
+ * @init_attr: attributes for qp
+ * @udata: user data for create qp
+ */
+static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct i40iw_pd *iwpd = to_iwpd(ibpd);
+ struct i40iw_device *iwdev = to_iwdev(ibpd->device);
+ struct i40iw_cqp *iwcqp = &iwdev->cqp;
+ struct i40iw_qp *iwqp;
+ struct i40iw_ucontext *ucontext;
+ struct i40iw_create_qp_req req;
+ struct i40iw_create_qp_resp uresp;
+ u32 qp_num = 0;
+ void *mem;
+ enum i40iw_status_code ret;
+ int err_code;
+ int sq_size;
+ int rq_size;
+ struct i40iw_sc_qp *qp;
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ struct i40iw_qp_init_info init_info;
+ struct i40iw_create_qp_info *qp_info;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+
+ struct i40iw_qp_host_ctx_info *ctx_info;
+ struct i40iwarp_offload_info *iwarp_info;
+ unsigned long flags;
+
+ if (init_attr->create_flags)
+ return ERR_PTR(-EINVAL);
+ if (init_attr->cap.max_inline_data > I40IW_MAX_INLINE_DATA_SIZE)
+ init_attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
+
+ memset(&init_info, 0, sizeof(init_info));
+
+ sq_size = init_attr->cap.max_send_wr;
+ rq_size = init_attr->cap.max_recv_wr;
+
+ init_info.qp_uk_init_info.sq_size = sq_size;
+ init_info.qp_uk_init_info.rq_size = rq_size;
+ init_info.qp_uk_init_info.max_sq_frag_cnt = init_attr->cap.max_send_sge;
+ init_info.qp_uk_init_info.max_rq_frag_cnt = init_attr->cap.max_recv_sge;
+
+ mem = kzalloc(sizeof(*iwqp), GFP_KERNEL);
+ if (!mem)
+ return ERR_PTR(-ENOMEM);
+
+ iwqp = (struct i40iw_qp *)mem;
+ qp = &iwqp->sc_qp;
+ qp->back_qp = (void *)iwqp;
+ qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
+
+ iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info;
+
+ if (i40iw_allocate_dma_mem(dev->hw,
+ &iwqp->q2_ctx_mem,
+ I40IW_Q2_BUFFER_SIZE + I40IW_QP_CTX_SIZE,
+ 256)) {
+ i40iw_pr_err("dma_mem failed\n");
+ err_code = -ENOMEM;
+ goto error;
+ }
+
+ init_info.q2 = iwqp->q2_ctx_mem.va;
+ init_info.q2_pa = iwqp->q2_ctx_mem.pa;
+
+ init_info.host_ctx = (void *)init_info.q2 + I40IW_Q2_BUFFER_SIZE;
+ init_info.host_ctx_pa = init_info.q2_pa + I40IW_Q2_BUFFER_SIZE;
+
+ err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_qps, iwdev->max_qp,
+ &qp_num, &iwdev->next_qp);
+ if (err_code) {
+ i40iw_pr_err("qp resource\n");
+ goto error;
+ }
+
+ iwqp->allocated_buffer = mem;
+ iwqp->iwdev = iwdev;
+ iwqp->iwpd = iwpd;
+ iwqp->ibqp.qp_num = qp_num;
+ qp = &iwqp->sc_qp;
+ iwqp->iwscq = to_iwcq(init_attr->send_cq);
+ iwqp->iwrcq = to_iwcq(init_attr->recv_cq);
+
+ iwqp->host_ctx.va = init_info.host_ctx;
+ iwqp->host_ctx.pa = init_info.host_ctx_pa;
+ iwqp->host_ctx.size = I40IW_QP_CTX_SIZE;
+
+ init_info.pd = &iwpd->sc_pd;
+ init_info.qp_uk_init_info.qp_id = iwqp->ibqp.qp_num;
+ iwqp->ctx_info.qp_compl_ctx = (uintptr_t)qp;
+
+ if (init_attr->qp_type != IB_QPT_RC) {
+ err_code = -ENOSYS;
+ goto error;
+ }
+ if (iwdev->push_mode)
+ i40iw_alloc_push_page(iwdev, qp);
+ if (udata) {
+ err_code = ib_copy_from_udata(&req, udata, sizeof(req));
+ if (err_code) {
+ i40iw_pr_err("ib_copy_from_data\n");
+ goto error;
+ }
+ iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
+ if (ibpd->uobject && ibpd->uobject->context) {
+ iwqp->user_mode = 1;
+ ucontext = to_ucontext(ibpd->uobject->context);
+
+ if (req.user_wqe_buffers) {
+ spin_lock_irqsave(
+ &ucontext->qp_reg_mem_list_lock, flags);
+ iwqp->iwpbl = i40iw_get_pbl(
+ (unsigned long)req.user_wqe_buffers,
+ &ucontext->qp_reg_mem_list);
+ spin_unlock_irqrestore(
+ &ucontext->qp_reg_mem_list_lock, flags);
+
+ if (!iwqp->iwpbl) {
+ err_code = -ENODATA;
+ i40iw_pr_err("no pbl info\n");
+ goto error;
+ }
+ }
+ }
+ err_code = i40iw_setup_virt_qp(iwdev, iwqp, &init_info);
+ } else {
+ err_code = i40iw_setup_kmode_qp(iwdev, iwqp, &init_info);
+ }
+
+ if (err_code) {
+ i40iw_pr_err("setup qp failed\n");
+ goto error;
+ }
+
+ init_info.type = I40IW_QP_TYPE_IWARP;
+ ret = dev->iw_priv_qp_ops->qp_init(qp, &init_info);
+ if (ret) {
+ err_code = -EPROTO;
+ i40iw_pr_err("qp_init fail\n");
+ goto error;
+ }
+ ctx_info = &iwqp->ctx_info;
+ iwarp_info = &iwqp->iwarp_info;
+ iwarp_info->rd_enable = true;
+ iwarp_info->wr_rdresp_en = true;
+ if (!iwqp->user_mode)
+ iwarp_info->priv_mode_en = true;
+ iwarp_info->ddp_ver = 1;
+ iwarp_info->rdmap_ver = 1;
+
+ ctx_info->iwarp_info_valid = true;
+ ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
+ ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
+ if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) {
+ ctx_info->push_mode_en = false;
+ } else {
+ ctx_info->push_mode_en = true;
+ ctx_info->push_idx = qp->push_idx;
+ }
+
+ ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
+ (u64 *)iwqp->host_ctx.va,
+ ctx_info);
+ ctx_info->iwarp_info_valid = false;
+ cqp_request = i40iw_get_cqp_request(iwcqp, true);
+ if (!cqp_request) {
+ err_code = -ENOMEM;
+ goto error;
+ }
+ cqp_info = &cqp_request->info;
+ qp_info = &cqp_request->info.in.u.qp_create.info;
+
+ memset(qp_info, 0, sizeof(*qp_info));
+
+ qp_info->cq_num_valid = true;
+ qp_info->next_iwarp_state = I40IW_QP_STATE_IDLE;
+
+ cqp_info->cqp_cmd = OP_QP_CREATE;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.qp_create.qp = qp;
+ cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
+ ret = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (ret) {
+ i40iw_pr_err("CQP-OP QP create fail");
+ err_code = -EACCES;
+ goto error;
+ }
+
+ i40iw_add_ref(&iwqp->ibqp);
+ spin_lock_init(&iwqp->lock);
+ iwqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? 1 : 0;
+ iwdev->qp_table[qp_num] = iwqp;
+ i40iw_add_pdusecount(iwqp->iwpd);
+ if (ibpd->uobject && udata) {
+ memset(&uresp, 0, sizeof(uresp));
+ uresp.actual_sq_size = sq_size;
+ uresp.actual_rq_size = rq_size;
+ uresp.qp_id = qp_num;
+ uresp.push_idx = qp->push_idx;
+ err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ if (err_code) {
+ i40iw_pr_err("copy_to_udata failed\n");
+ i40iw_destroy_qp(&iwqp->ibqp);
+ /* let the completion of the qp destroy free the qp */
+ return ERR_PTR(err_code);
+ }
+ }
+
+ return &iwqp->ibqp;
+error:
+ i40iw_free_qp_resources(iwdev, iwqp, qp_num);
+ kfree(mem);
+ return ERR_PTR(err_code);
+}
+
+/**
+ * i40iw_query - query qp attributes
+ * @ibqp: qp pointer
+ * @attr: attributes pointer
+ * @attr_mask: Not used
+ * @init_attr: qp attributes to return
+ */
+static int i40iw_query_qp(struct ib_qp *ibqp,
+ struct ib_qp_attr *attr,
+ int attr_mask,
+ struct ib_qp_init_attr *init_attr)
+{
+ struct i40iw_qp *iwqp = to_iwqp(ibqp);
+ struct i40iw_sc_qp *qp = &iwqp->sc_qp;
+
+ attr->qp_access_flags = 0;
+ attr->cap.max_send_wr = qp->qp_uk.sq_size;
+ attr->cap.max_recv_wr = qp->qp_uk.rq_size;
+ attr->cap.max_recv_sge = 1;
+ attr->cap.max_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
+ init_attr->event_handler = iwqp->ibqp.event_handler;
+ init_attr->qp_context = iwqp->ibqp.qp_context;
+ init_attr->send_cq = iwqp->ibqp.send_cq;
+ init_attr->recv_cq = iwqp->ibqp.recv_cq;
+ init_attr->srq = iwqp->ibqp.srq;
+ init_attr->cap = attr->cap;
+ return 0;
+}
+
+/**
+ * i40iw_hw_modify_qp - setup cqp for modify qp
+ * @iwdev: iwarp device
+ * @iwqp: qp ptr (user or kernel)
+ * @info: info for modify qp
+ * @wait: flag to wait or not for modify qp completion
+ */
+void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
+ struct i40iw_modify_qp_info *info, bool wait)
+{
+ enum i40iw_status_code status;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+ struct i40iw_modify_qp_info *m_info;
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait);
+ if (!cqp_request)
+ return;
+
+ cqp_info = &cqp_request->info;
+ m_info = &cqp_info->in.u.qp_modify.info;
+ memcpy(m_info, info, sizeof(*m_info));
+ cqp_info->cqp_cmd = OP_QP_MODIFY;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
+ cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (status)
+ i40iw_pr_err("CQP-OP Modify QP fail");
+}
+
+/**
+ * i40iw_modify_qp - modify qp request
+ * @ibqp: qp's pointer for modify
+ * @attr: access attributes
+ * @attr_mask: state mask
+ * @udata: user data
+ */
+int i40iw_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct i40iw_qp *iwqp = to_iwqp(ibqp);
+ struct i40iw_device *iwdev = iwqp->iwdev;
+ struct i40iw_qp_host_ctx_info *ctx_info;
+ struct i40iwarp_offload_info *iwarp_info;
+ struct i40iw_modify_qp_info info;
+ u8 issue_modify_qp = 0;
+ u8 dont_wait = 0;
+ u32 err;
+ unsigned long flags;
+
+ memset(&info, 0, sizeof(info));
+ ctx_info = &iwqp->ctx_info;
+ iwarp_info = &iwqp->iwarp_info;
+
+ spin_lock_irqsave(&iwqp->lock, flags);
+
+ if (attr_mask & IB_QP_STATE) {
+ switch (attr->qp_state) {
+ case IB_QPS_INIT:
+ case IB_QPS_RTR:
+ if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_IDLE) {
+ err = -EINVAL;
+ goto exit;
+ }
+ if (iwqp->iwarp_state == I40IW_QP_STATE_INVALID) {
+ info.next_iwarp_state = I40IW_QP_STATE_IDLE;
+ issue_modify_qp = 1;
+ }
+ break;
+ case IB_QPS_RTS:
+ if ((iwqp->iwarp_state > (u32)I40IW_QP_STATE_RTS) ||
+ (!iwqp->cm_id)) {
+ err = -EINVAL;
+ goto exit;
+ }
+
+ issue_modify_qp = 1;
+ iwqp->hw_tcp_state = I40IW_TCP_STATE_ESTABLISHED;
+ iwqp->hte_added = 1;
+ info.next_iwarp_state = I40IW_QP_STATE_RTS;
+ info.tcp_ctx_valid = true;
+ info.ord_valid = true;
+ info.arp_cache_idx_valid = true;
+ info.cq_num_valid = true;
+ break;
+ case IB_QPS_SQD:
+ if (iwqp->hw_iwarp_state > (u32)I40IW_QP_STATE_RTS) {
+ err = 0;
+ goto exit;
+ }
+ if ((iwqp->iwarp_state == (u32)I40IW_QP_STATE_CLOSING) ||
+ (iwqp->iwarp_state < (u32)I40IW_QP_STATE_RTS)) {
+ err = 0;
+ goto exit;
+ }
+ if (iwqp->iwarp_state > (u32)I40IW_QP_STATE_CLOSING) {
+ err = -EINVAL;
+ goto exit;
+ }
+ info.next_iwarp_state = I40IW_QP_STATE_CLOSING;
+ issue_modify_qp = 1;
+ break;
+ case IB_QPS_SQE:
+ if (iwqp->iwarp_state >= (u32)I40IW_QP_STATE_TERMINATE) {
+ err = -EINVAL;
+ goto exit;
+ }
+ info.next_iwarp_state = I40IW_QP_STATE_TERMINATE;
+ issue_modify_qp = 1;
+ break;
+ case IB_QPS_ERR:
+ case IB_QPS_RESET:
+ if (iwqp->iwarp_state == (u32)I40IW_QP_STATE_ERROR) {
+ err = -EINVAL;
+ goto exit;
+ }
+ if (iwqp->sc_qp.term_flags)
+ del_timer(&iwqp->terminate_timer);
+ info.next_iwarp_state = I40IW_QP_STATE_ERROR;
+ if ((iwqp->hw_tcp_state > I40IW_TCP_STATE_CLOSED) &&
+ iwdev->iw_status &&
+ (iwqp->hw_tcp_state != I40IW_TCP_STATE_TIME_WAIT))
+ info.reset_tcp_conn = true;
+ else
+ dont_wait = 1;
+ issue_modify_qp = 1;
+ info.next_iwarp_state = I40IW_QP_STATE_ERROR;
+ break;
+ default:
+ err = -EINVAL;
+ goto exit;
+ }
+
+ iwqp->ibqp_state = attr->qp_state;
+
+ if (issue_modify_qp)
+ iwqp->iwarp_state = info.next_iwarp_state;
+ else
+ info.next_iwarp_state = iwqp->iwarp_state;
+ }
+ if (attr_mask & IB_QP_ACCESS_FLAGS) {
+ ctx_info->iwarp_info_valid = true;
+ if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE)
+ iwarp_info->wr_rdresp_en = true;
+ if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
+ iwarp_info->wr_rdresp_en = true;
+ if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
+ iwarp_info->rd_enable = true;
+ if (attr->qp_access_flags & IB_ACCESS_MW_BIND)
+ iwarp_info->bind_en = true;
+
+ if (iwqp->user_mode) {
+ iwarp_info->rd_enable = true;
+ iwarp_info->wr_rdresp_en = true;
+ iwarp_info->priv_mode_en = false;
+ }
+ }
+
+ if (ctx_info->iwarp_info_valid) {
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ int ret;
+
+ ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
+ ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
+ ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
+ (u64 *)iwqp->host_ctx.va,
+ ctx_info);
+ if (ret) {
+ i40iw_pr_err("setting QP context\n");
+ err = -EINVAL;
+ goto exit;
+ }
+ }
+
+ spin_unlock_irqrestore(&iwqp->lock, flags);
+
+ if (issue_modify_qp)
+ i40iw_hw_modify_qp(iwdev, iwqp, &info, true);
+
+ if (issue_modify_qp && (iwqp->ibqp_state > IB_QPS_RTS)) {
+ if (dont_wait) {
+ if (iwqp->cm_id && iwqp->hw_tcp_state) {
+ spin_lock_irqsave(&iwqp->lock, flags);
+ iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
+ iwqp->last_aeq = I40IW_AE_RESET_SENT;
+ spin_unlock_irqrestore(&iwqp->lock, flags);
+ }
+ }
+ }
+ return 0;
+exit:
+ spin_unlock_irqrestore(&iwqp->lock, flags);
+ return err;
+}
+
+/**
+ * cq_free_resources - free up recources for cq
+ * @iwdev: iwarp device
+ * @iwcq: cq ptr
+ */
+static void cq_free_resources(struct i40iw_device *iwdev, struct i40iw_cq *iwcq)
+{
+ struct i40iw_sc_cq *cq = &iwcq->sc_cq;
+
+ if (!iwcq->user_mode)
+ i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwcq->kmem);
+ i40iw_free_resource(iwdev, iwdev->allocated_cqs, cq->cq_uk.cq_id);
+}
+
+/**
+ * cq_wq_destroy - send cq destroy cqp
+ * @iwdev: iwarp device
+ * @cq: hardware control cq
+ */
+static void cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq)
+{
+ enum i40iw_status_code status;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
+ if (!cqp_request)
+ return;
+
+ cqp_info = &cqp_request->info;
+
+ cqp_info->cqp_cmd = OP_CQ_DESTROY;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.cq_destroy.cq = cq;
+ cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (status)
+ i40iw_pr_err("CQP-OP Destroy QP fail");
+}
+
+/**
+ * i40iw_destroy_cq - destroy cq
+ * @ib_cq: cq pointer
+ */
+static int i40iw_destroy_cq(struct ib_cq *ib_cq)
+{
+ struct i40iw_cq *iwcq;
+ struct i40iw_device *iwdev;
+ struct i40iw_sc_cq *cq;
+
+ if (!ib_cq) {
+ i40iw_pr_err("ib_cq == NULL\n");
+ return 0;
+ }
+
+ iwcq = to_iwcq(ib_cq);
+ iwdev = to_iwdev(ib_cq->device);
+ cq = &iwcq->sc_cq;
+ cq_wq_destroy(iwdev, cq);
+ cq_free_resources(iwdev, iwcq);
+ kfree(iwcq);
+ return 0;
+}
+
+/**
+ * i40iw_create_cq - create cq
+ * @ibdev: device pointer from stack
+ * @attr: attributes for cq
+ * @context: user context created during alloc
+ * @udata: user data
+ */
+static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+ struct i40iw_cq *iwcq;
+ struct i40iw_pbl *iwpbl;
+ u32 cq_num = 0;
+ struct i40iw_sc_cq *cq;
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ struct i40iw_cq_init_info info;
+ enum i40iw_status_code status;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+ struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
+ unsigned long flags;
+ int err_code;
+ int entries = attr->cqe;
+
+ if (entries > iwdev->max_cqe)
+ return ERR_PTR(-EINVAL);
+
+ iwcq = kzalloc(sizeof(*iwcq), GFP_KERNEL);
+ if (!iwcq)
+ return ERR_PTR(-ENOMEM);
+
+ memset(&info, 0, sizeof(info));
+
+ err_code = i40iw_alloc_resource(iwdev, iwdev->allocated_cqs,
+ iwdev->max_cq, &cq_num,
+ &iwdev->next_cq);
+ if (err_code)
+ goto error;
+
+ cq = &iwcq->sc_cq;
+ cq->back_cq = (void *)iwcq;
+ spin_lock_init(&iwcq->lock);
+
+ info.dev = dev;
+ ukinfo->cq_size = max(entries, 4);
+ ukinfo->cq_id = cq_num;
+ iwcq->ibcq.cqe = info.cq_uk_init_info.cq_size;
+ info.ceqe_mask = 0;
+ info.ceq_id = 0;
+ info.ceq_id_valid = true;
+ info.ceqe_mask = 1;
+ info.type = I40IW_CQ_TYPE_IWARP;
+ if (context) {
+ struct i40iw_ucontext *ucontext;
+ struct i40iw_create_cq_req req;
+ struct i40iw_cq_mr *cqmr;
+
+ memset(&req, 0, sizeof(req));
+ iwcq->user_mode = true;
+ ucontext = to_ucontext(context);
+ if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req)))
+ goto cq_free_resources;
+
+ spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
+ iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,
+ &ucontext->cq_reg_mem_list);
+ spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
+ if (!iwpbl) {
+ err_code = -EPROTO;
+ goto cq_free_resources;
+ }
+
+ iwcq->iwpbl = iwpbl;
+ iwcq->cq_mem_size = 0;
+ cqmr = &iwpbl->cq_mr;
+ info.shadow_area_pa = cpu_to_le64(cqmr->shadow);
+ if (iwpbl->pbl_allocated) {
+ info.virtual_map = true;
+ info.pbl_chunk_size = 1;
+ info.first_pm_pbl_idx = cqmr->cq_pbl.idx;
+ } else {
+ info.cq_base_pa = cqmr->cq_pbl.addr;
+ }
+ } else {
+ /* Kmode allocations */
+ int rsize;
+ int shadow;
+
+ rsize = info.cq_uk_init_info.cq_size * sizeof(struct i40iw_cqe);
+ rsize = round_up(rsize, 256);
+ shadow = I40IW_SHADOW_AREA_SIZE << 3;
+ status = i40iw_allocate_dma_mem(dev->hw, &iwcq->kmem,
+ rsize + shadow, 256);
+ if (status) {
+ err_code = -ENOMEM;
+ goto cq_free_resources;
+ }
+ ukinfo->cq_base = iwcq->kmem.va;
+ info.cq_base_pa = iwcq->kmem.pa;
+ info.shadow_area_pa = info.cq_base_pa + rsize;
+ ukinfo->shadow_area = iwcq->kmem.va + rsize;
+ }
+
+ if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
+ i40iw_pr_err("init cq fail\n");
+ err_code = -EPROTO;
+ goto cq_free_resources;
+ }
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
+ if (!cqp_request) {
+ err_code = -ENOMEM;
+ goto cq_free_resources;
+ }
+
+ cqp_info = &cqp_request->info;
+ cqp_info->cqp_cmd = OP_CQ_CREATE;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.cq_create.cq = cq;
+ cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (status) {
+ i40iw_pr_err("CQP-OP Create QP fail");
+ err_code = -EPROTO;
+ goto cq_free_resources;
+ }
+
+ if (context) {
+ struct i40iw_create_cq_resp resp;
+
+ memset(&resp, 0, sizeof(resp));
+ resp.cq_id = info.cq_uk_init_info.cq_id;
+ resp.cq_size = info.cq_uk_init_info.cq_size;
+ if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
+ i40iw_pr_err("copy to user data\n");
+ err_code = -EPROTO;
+ goto cq_destroy;
+ }
+ }
+
+ return (struct ib_cq *)iwcq;
+
+cq_destroy:
+ cq_wq_destroy(iwdev, cq);
+cq_free_resources:
+ cq_free_resources(iwdev, iwcq);
+error:
+ kfree(iwcq);
+ return ERR_PTR(err_code);
+}
+
+/**
+ * i40iw_get_user_access - get hw access from IB access
+ * @acc: IB access to return hw access
+ */
+static inline u16 i40iw_get_user_access(int acc)
+{
+ u16 access = 0;
+
+ access |= (acc & IB_ACCESS_LOCAL_WRITE) ? I40IW_ACCESS_FLAGS_LOCALWRITE : 0;
+ access |= (acc & IB_ACCESS_REMOTE_WRITE) ? I40IW_ACCESS_FLAGS_REMOTEWRITE : 0;
+ access |= (acc & IB_ACCESS_REMOTE_READ) ? I40IW_ACCESS_FLAGS_REMOTEREAD : 0;
+ access |= (acc & IB_ACCESS_MW_BIND) ? I40IW_ACCESS_FLAGS_BIND_WINDOW : 0;
+ return access;
+}
+
+/**
+ * i40iw_free_stag - free stag resource
+ * @iwdev: iwarp device
+ * @stag: stag to free
+ */
+static void i40iw_free_stag(struct i40iw_device *iwdev, u32 stag)
+{
+ u32 stag_idx;
+
+ stag_idx = (stag & iwdev->mr_stagmask) >> I40IW_CQPSQ_STAG_IDX_SHIFT;
+ i40iw_free_resource(iwdev, iwdev->allocated_mrs, stag_idx);
+}
+
+/**
+ * i40iw_create_stag - create random stag
+ * @iwdev: iwarp device
+ */
+static u32 i40iw_create_stag(struct i40iw_device *iwdev)
+{
+ u32 stag = 0;
+ u32 stag_index = 0;
+ u32 next_stag_index;
+ u32 driver_key;
+ u32 random;
+ u8 consumer_key;
+ int ret;
+
+ get_random_bytes(&random, sizeof(random));
+ consumer_key = (u8)random;
+
+ driver_key = random & ~iwdev->mr_stagmask;
+ next_stag_index = (random & iwdev->mr_stagmask) >> 8;
+ next_stag_index %= iwdev->max_mr;
+
+ ret = i40iw_alloc_resource(iwdev,
+ iwdev->allocated_mrs, iwdev->max_mr,
+ &stag_index, &next_stag_index);
+ if (!ret) {
+ stag = stag_index << I40IW_CQPSQ_STAG_IDX_SHIFT;
+ stag |= driver_key;
+ stag += (u32)consumer_key;
+ }
+ return stag;
+}
+
+/**
+ * i40iw_next_pbl_addr - Get next pbl address
+ * @palloc: Poiner to allocated pbles
+ * @pbl: pointer to a pble
+ * @pinfo: info pointer
+ * @idx: index
+ */
+static inline u64 *i40iw_next_pbl_addr(struct i40iw_pble_alloc *palloc,
+ u64 *pbl,
+ struct i40iw_pble_info **pinfo,
+ u32 *idx)
+{
+ *idx += 1;
+ if ((!(*pinfo)) || (*idx != (*pinfo)->cnt))
+ return ++pbl;
+ *idx = 0;
+ (*pinfo)++;
+ return (u64 *)(*pinfo)->addr;
+}
+
+/**
+ * i40iw_copy_user_pgaddrs - copy user page address to pble's os locally
+ * @iwmr: iwmr for IB's user page addresses
+ * @pbl: ple pointer to save 1 level or 0 level pble
+ * @level: indicated level 0, 1 or 2
+ */
+static void i40iw_copy_user_pgaddrs(struct i40iw_mr *iwmr,
+ u64 *pbl,
+ enum i40iw_pble_level level)
+{
+ struct ib_umem *region = iwmr->region;
+ struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
+ int chunk_pages, entry, pg_shift, i;
+ struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
+ struct i40iw_pble_info *pinfo;
+ struct scatterlist *sg;
+ u32 idx = 0;
+
+ pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
+ pg_shift = ffs(region->page_size) - 1;
+ for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
+ chunk_pages = sg_dma_len(sg) >> pg_shift;
+ if ((iwmr->type == IW_MEMREG_TYPE_QP) &&
+ !iwpbl->qp_mr.sq_page)
+ iwpbl->qp_mr.sq_page = sg_page(sg);
+ for (i = 0; i < chunk_pages; i++) {
+ *pbl = cpu_to_le64(sg_dma_address(sg) + region->page_size * i);
+ pbl = i40iw_next_pbl_addr(palloc, pbl, &pinfo, &idx);
+ }
+ }
+}
+
+/**
+ * i40iw_setup_pbles - copy user pg address to pble's
+ * @iwdev: iwarp device
+ * @iwmr: mr pointer for this memory registration
+ * @use_pbles: flag if to use pble's or memory (level 0)
+ */
+static int i40iw_setup_pbles(struct i40iw_device *iwdev,
+ struct i40iw_mr *iwmr,
+ bool use_pbles)
+{
+ struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
+ struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
+ struct i40iw_pble_info *pinfo;
+ u64 *pbl;
+ enum i40iw_status_code status;
+ enum i40iw_pble_level level = I40IW_LEVEL_1;
+
+ if (!use_pbles && (iwmr->page_cnt > MAX_SAVE_PAGE_ADDRS))
+ return -ENOMEM;
+
+ if (use_pbles) {
+ mutex_lock(&iwdev->pbl_mutex);
+ status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc, iwmr->page_cnt);
+ mutex_unlock(&iwdev->pbl_mutex);
+ if (status)
+ return -ENOMEM;
+
+ iwpbl->pbl_allocated = true;
+ level = palloc->level;
+ pinfo = (level == I40IW_LEVEL_1) ? &palloc->level1 : palloc->level2.leaf;
+ pbl = (u64 *)pinfo->addr;
+ } else {
+ pbl = iwmr->pgaddrmem;
+ }
+
+ i40iw_copy_user_pgaddrs(iwmr, pbl, level);
+ return 0;
+}
+
+/**
+ * i40iw_handle_q_mem - handle memory for qp and cq
+ * @iwdev: iwarp device
+ * @req: information for q memory management
+ * @iwpbl: pble struct
+ * @use_pbles: flag to use pble
+ */
+static int i40iw_handle_q_mem(struct i40iw_device *iwdev,
+ struct i40iw_mem_reg_req *req,
+ struct i40iw_pbl *iwpbl,
+ bool use_pbles)
+{
+ struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
+ struct i40iw_mr *iwmr = iwpbl->iwmr;
+ struct i40iw_qp_mr *qpmr = &iwpbl->qp_mr;
+ struct i40iw_cq_mr *cqmr = &iwpbl->cq_mr;
+ struct i40iw_hmc_pble *hmc_p;
+ u64 *arr = iwmr->pgaddrmem;
+ int err;
+ int total;
+
+ total = req->sq_pages + req->rq_pages + req->cq_pages;
+
+ err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
+ if (err)
+ return err;
+ if (use_pbles && (palloc->level != I40IW_LEVEL_1)) {
+ i40iw_free_pble(iwdev->pble_rsrc, palloc);
+ iwpbl->pbl_allocated = false;
+ return -ENOMEM;
+ }
+
+ if (use_pbles)
+ arr = (u64 *)palloc->level1.addr;
+ if (req->reg_type == IW_MEMREG_TYPE_QP) {
+ hmc_p = &qpmr->sq_pbl;
+ qpmr->shadow = (dma_addr_t)arr[total];
+ if (use_pbles) {
+ hmc_p->idx = palloc->level1.idx;
+ hmc_p = &qpmr->rq_pbl;
+ hmc_p->idx = palloc->level1.idx + req->sq_pages;
+ } else {
+ hmc_p->addr = arr[0];
+ hmc_p = &qpmr->rq_pbl;
+ hmc_p->addr = arr[1];
+ }
+ } else { /* CQ */
+ hmc_p = &cqmr->cq_pbl;
+ cqmr->shadow = (dma_addr_t)arr[total];
+ if (use_pbles)
+ hmc_p->idx = palloc->level1.idx;
+ else
+ hmc_p->addr = arr[0];
+ }
+ return err;
+}
+
+/**
+ * i40iw_hwreg_mr - send cqp command for memory registration
+ * @iwdev: iwarp device
+ * @iwmr: iwarp mr pointer
+ * @access: access for MR
+ */
+static int i40iw_hwreg_mr(struct i40iw_device *iwdev,
+ struct i40iw_mr *iwmr,
+ u16 access)
+{
+ struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
+ struct i40iw_reg_ns_stag_info *stag_info;
+ struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
+ struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
+ enum i40iw_status_code status;
+ int err = 0;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
+ if (!cqp_request)
+ return -ENOMEM;
+
+ cqp_info = &cqp_request->info;
+ stag_info = &cqp_info->in.u.mr_reg_non_shared.info;
+ memset(stag_info, 0, sizeof(*stag_info));
+ stag_info->va = (void *)(unsigned long)iwpbl->user_base;
+ stag_info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
+ stag_info->stag_key = (u8)iwmr->stag;
+ stag_info->total_len = iwmr->length;
+ stag_info->access_rights = access;
+ stag_info->pd_id = iwpd->sc_pd.pd_id;
+ stag_info->addr_type = I40IW_ADDR_TYPE_VA_BASED;
+
+ if (iwmr->page_cnt > 1) {
+ if (palloc->level == I40IW_LEVEL_1) {
+ stag_info->first_pm_pbl_index = palloc->level1.idx;
+ stag_info->chunk_size = 1;
+ } else {
+ stag_info->first_pm_pbl_index = palloc->level2.root.idx;
+ stag_info->chunk_size = 3;
+ }
+ } else {
+ stag_info->reg_addr_pa = iwmr->pgaddrmem[0];
+ }
+
+ cqp_info->cqp_cmd = OP_MR_REG_NON_SHARED;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.mr_reg_non_shared.dev = &iwdev->sc_dev;
+ cqp_info->in.u.mr_reg_non_shared.scratch = (uintptr_t)cqp_request;
+
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (status) {
+ err = -ENOMEM;
+ i40iw_pr_err("CQP-OP MR Reg fail");
+ }
+ return err;
+}
+
+/**
+ * i40iw_reg_user_mr - Register a user memory region
+ * @pd: ptr of pd
+ * @start: virtual start address
+ * @length: length of mr
+ * @virt: virtual address
+ * @acc: access of mr
+ * @udata: user data
+ */
+static struct ib_mr *i40iw_reg_user_mr(struct ib_pd *pd,
+ u64 start,
+ u64 length,
+ u64 virt,
+ int acc,
+ struct ib_udata *udata)
+{
+ struct i40iw_pd *iwpd = to_iwpd(pd);
+ struct i40iw_device *iwdev = to_iwdev(pd->device);
+ struct i40iw_ucontext *ucontext;
+ struct i40iw_pble_alloc *palloc;
+ struct i40iw_pbl *iwpbl;
+ struct i40iw_mr *iwmr;
+ struct ib_umem *region;
+ struct i40iw_mem_reg_req req;
+ u32 pbl_depth = 0;
+ u32 stag = 0;
+ u16 access;
+ u32 region_length;
+ bool use_pbles = false;
+ unsigned long flags;
+ int err = -ENOSYS;
+
+ region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
+ if (IS_ERR(region))
+ return (struct ib_mr *)region;
+
+ if (ib_copy_from_udata(&req, udata, sizeof(req))) {
+ ib_umem_release(region);
+ return ERR_PTR(-EFAULT);
+ }
+
+ iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
+ if (!iwmr) {
+ ib_umem_release(region);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ iwpbl = &iwmr->iwpbl;
+ iwpbl->iwmr = iwmr;
+ iwmr->region = region;
+ iwmr->ibmr.pd = pd;
+ iwmr->ibmr.device = pd->device;
+ ucontext = to_ucontext(pd->uobject->context);
+ region_length = region->length + (start & 0xfff);
+ pbl_depth = region_length >> 12;
+ pbl_depth += (region_length & (4096 - 1)) ? 1 : 0;
+ iwmr->length = region->length;
+
+ iwpbl->user_base = virt;
+ palloc = &iwpbl->pble_alloc;
+
+ iwmr->type = req.reg_type;
+ iwmr->page_cnt = pbl_depth;
+
+ switch (req.reg_type) {
+ case IW_MEMREG_TYPE_QP:
+ use_pbles = ((req.sq_pages + req.rq_pages) > 2);
+ err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
+ if (err)
+ goto error;
+ spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
+ list_add_tail(&iwpbl->list, &ucontext->qp_reg_mem_list);
+ spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
+ break;
+ case IW_MEMREG_TYPE_CQ:
+ use_pbles = (req.cq_pages > 1);
+ err = i40iw_handle_q_mem(iwdev, &req, iwpbl, use_pbles);
+ if (err)
+ goto error;
+
+ spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
+ list_add_tail(&iwpbl->list, &ucontext->cq_reg_mem_list);
+ spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
+ break;
+ case IW_MEMREG_TYPE_MEM:
+ access = I40IW_ACCESS_FLAGS_LOCALREAD;
+
+ use_pbles = (iwmr->page_cnt != 1);
+ err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
+ if (err)
+ goto error;
+
+ access |= i40iw_get_user_access(acc);
+ stag = i40iw_create_stag(iwdev);
+ if (!stag) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ iwmr->stag = stag;
+ iwmr->ibmr.rkey = stag;
+ iwmr->ibmr.lkey = stag;
+
+ err = i40iw_hwreg_mr(iwdev, iwmr, access);
+ if (err) {
+ i40iw_free_stag(iwdev, stag);
+ goto error;
+ }
+ break;
+ default:
+ goto error;
+ }
+
+ iwmr->type = req.reg_type;
+ if (req.reg_type == IW_MEMREG_TYPE_MEM)
+ i40iw_add_pdusecount(iwpd);
+ return &iwmr->ibmr;
+
+error:
+ if (palloc->level != I40IW_LEVEL_0)
+ i40iw_free_pble(iwdev->pble_rsrc, palloc);
+ ib_umem_release(region);
+ kfree(iwmr);
+ return ERR_PTR(err);
+}
+
+/**
+ * i40iw_reg_phys_mr - register kernel physical memory
+ * @pd: ibpd pointer
+ * @addr: physical address of memory to register
+ * @size: size of memory to register
+ * @acc: Access rights
+ * @iova_start: start of virtual address for physical buffers
+ */
+struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *pd,
+ u64 addr,
+ u64 size,
+ int acc,
+ u64 *iova_start)
+{
+ struct i40iw_pd *iwpd = to_iwpd(pd);
+ struct i40iw_device *iwdev = to_iwdev(pd->device);
+ struct i40iw_pbl *iwpbl;
+ struct i40iw_mr *iwmr;
+ enum i40iw_status_code status;
+ u32 stag;
+ u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
+ int ret;
+
+ iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
+ if (!iwmr)
+ return ERR_PTR(-ENOMEM);
+ iwmr->ibmr.pd = pd;
+ iwmr->ibmr.device = pd->device;
+ iwpbl = &iwmr->iwpbl;
+ iwpbl->iwmr = iwmr;
+ iwmr->type = IW_MEMREG_TYPE_MEM;
+ iwpbl->user_base = *iova_start;
+ stag = i40iw_create_stag(iwdev);
+ if (!stag) {
+ ret = -EOVERFLOW;
+ goto err;
+ }
+ access |= i40iw_get_user_access(acc);
+ iwmr->stag = stag;
+ iwmr->ibmr.rkey = stag;
+ iwmr->ibmr.lkey = stag;
+ iwmr->page_cnt = 1;
+ iwmr->pgaddrmem[0] = addr;
+ status = i40iw_hwreg_mr(iwdev, iwmr, access);
+ if (status) {
+ i40iw_free_stag(iwdev, stag);
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ i40iw_add_pdusecount(iwpd);
+ return &iwmr->ibmr;
+ err:
+ kfree(iwmr);
+ return ERR_PTR(ret);
+}
+
+/**
+ * i40iw_get_dma_mr - register physical mem
+ * @pd: ptr of pd
+ * @acc: access for memory
+ */
+static struct ib_mr *i40iw_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ u64 kva = 0;
+
+ return i40iw_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
+}
+
+/**
+ * i40iw_del_mem_list - Deleting pbl list entries for CQ/QP
+ * @iwmr: iwmr for IB's user page addresses
+ * @ucontext: ptr to user context
+ */
+static void i40iw_del_memlist(struct i40iw_mr *iwmr,
+ struct i40iw_ucontext *ucontext)
+{
+ struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
+ unsigned long flags;
+
+ switch (iwmr->type) {
+ case IW_MEMREG_TYPE_CQ:
+ spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
+ if (!list_empty(&ucontext->cq_reg_mem_list))
+ list_del(&iwpbl->list);
+ spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
+ break;
+ case IW_MEMREG_TYPE_QP:
+ spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
+ if (!list_empty(&ucontext->qp_reg_mem_list))
+ list_del(&iwpbl->list);
+ spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * i40iw_dereg_mr - deregister mr
+ * @ib_mr: mr ptr for dereg
+ */
+static int i40iw_dereg_mr(struct ib_mr *ib_mr)
+{
+ struct ib_pd *ibpd = ib_mr->pd;
+ struct i40iw_pd *iwpd = to_iwpd(ibpd);
+ struct i40iw_mr *iwmr = to_iwmr(ib_mr);
+ struct i40iw_device *iwdev = to_iwdev(ib_mr->device);
+ enum i40iw_status_code status;
+ struct i40iw_dealloc_stag_info *info;
+ struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
+ struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
+ struct i40iw_cqp_request *cqp_request;
+ struct cqp_commands_info *cqp_info;
+ u32 stag_idx;
+
+ if (iwmr->region)
+ ib_umem_release(iwmr->region);
+
+ if (iwmr->type != IW_MEMREG_TYPE_MEM) {
+ if (ibpd->uobject) {
+ struct i40iw_ucontext *ucontext;
+
+ ucontext = to_ucontext(ibpd->uobject->context);
+ i40iw_del_memlist(iwmr, ucontext);
+ }
+ if (iwpbl->pbl_allocated)
+ i40iw_free_pble(iwdev->pble_rsrc, palloc);
+ kfree(iwpbl->iwmr);
+ iwpbl->iwmr = NULL;
+ return 0;
+ }
+
+ cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
+ if (!cqp_request)
+ return -ENOMEM;
+
+ cqp_info = &cqp_request->info;
+ info = &cqp_info->in.u.dealloc_stag.info;
+ memset(info, 0, sizeof(*info));
+
+ info->pd_id = cpu_to_le32(iwpd->sc_pd.pd_id & 0x00007fff);
+ info->stag_idx = RS_64_1(ib_mr->rkey, I40IW_CQPSQ_STAG_IDX_SHIFT);
+ stag_idx = info->stag_idx;
+ info->mr = true;
+ if (iwpbl->pbl_allocated)
+ info->dealloc_pbl = true;
+
+ cqp_info->cqp_cmd = OP_DEALLOC_STAG;
+ cqp_info->post_sq = 1;
+ cqp_info->in.u.dealloc_stag.dev = &iwdev->sc_dev;
+ cqp_info->in.u.dealloc_stag.scratch = (uintptr_t)cqp_request;
+ status = i40iw_handle_cqp_op(iwdev, cqp_request);
+ if (status)
+ i40iw_pr_err("CQP-OP dealloc failed for stag_idx = 0x%x\n", stag_idx);
+ i40iw_rem_pdusecount(iwpd, iwdev);
+ i40iw_free_stag(iwdev, iwmr->stag);
+ if (iwpbl->pbl_allocated)
+ i40iw_free_pble(iwdev->pble_rsrc, palloc);
+ kfree(iwmr);
+ return 0;
+}
+
+/**
+ * i40iw_show_rev
+ */
+static ssize_t i40iw_show_rev(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i40iw_ib_device *iwibdev = container_of(dev,
+ struct i40iw_ib_device,
+ ibdev.dev);
+ u32 hw_rev = iwibdev->iwdev->sc_dev.hw_rev;
+
+ return sprintf(buf, "%x\n", hw_rev);
+}
+
+/**
+ * i40iw_show_fw_ver
+ */
+static ssize_t i40iw_show_fw_ver(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 firmware_version = I40IW_FW_VERSION;
+
+ return sprintf(buf, "%u.%u\n", firmware_version,
+ (firmware_version & 0x000000ff));
+}
+
+/**
+ * i40iw_show_hca
+ */
+static ssize_t i40iw_show_hca(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "I40IW\n");
+}
+
+/**
+ * i40iw_show_board
+ */
+static ssize_t i40iw_show_board(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%.*s\n", 32, "I40IW Board ID");
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, i40iw_show_rev, NULL);
+static DEVICE_ATTR(fw_ver, S_IRUGO, i40iw_show_fw_ver, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, i40iw_show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, i40iw_show_board, NULL);
+
+static struct device_attribute *i40iw_dev_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_fw_ver,
+ &dev_attr_hca_type,
+ &dev_attr_board_id
+};
+
+/**
+ * i40iw_copy_sg_list - copy sg list for qp
+ * @sg_list: copied into sg_list
+ * @sgl: copy from sgl
+ * @num_sges: count of sg entries
+ */
+static void i40iw_copy_sg_list(struct i40iw_sge *sg_list, struct ib_sge *sgl, int num_sges)
+{
+ unsigned int i;
+
+ for (i = 0; (i < num_sges) && (i < I40IW_MAX_WQ_FRAGMENT_COUNT); i++) {
+ sg_list[i].tag_off = sgl[i].addr;
+ sg_list[i].len = sgl[i].length;
+ sg_list[i].stag = sgl[i].lkey;
+ }
+}
+
+/**
+ * i40iw_post_send - kernel application wr
+ * @ibqp: qp ptr for wr
+ * @ib_wr: work request ptr
+ * @bad_wr: return of bad wr if err
+ */
+static int i40iw_post_send(struct ib_qp *ibqp,
+ struct ib_send_wr *ib_wr,
+ struct ib_send_wr **bad_wr)
+{
+ struct i40iw_qp *iwqp;
+ struct i40iw_qp_uk *ukqp;
+ struct i40iw_post_sq_info info;
+ enum i40iw_status_code ret;
+ int err = 0;
+ unsigned long flags;
+
+ iwqp = (struct i40iw_qp *)ibqp;
+ ukqp = &iwqp->sc_qp.qp_uk;
+
+ spin_lock_irqsave(&iwqp->lock, flags);
+ while (ib_wr) {
+ memset(&info, 0, sizeof(info));
+ info.wr_id = (u64)(ib_wr->wr_id);
+ if ((ib_wr->send_flags & IB_SEND_SIGNALED) || iwqp->sig_all)
+ info.signaled = true;
+ if (ib_wr->send_flags & IB_SEND_FENCE)
+ info.read_fence = true;
+
+ switch (ib_wr->opcode) {
+ case IB_WR_SEND:
+ if (ib_wr->send_flags & IB_SEND_SOLICITED)
+ info.op_type = I40IW_OP_TYPE_SEND_SOL;
+ else
+ info.op_type = I40IW_OP_TYPE_SEND;
+
+ if (ib_wr->send_flags & IB_SEND_INLINE) {
+ info.op.inline_send.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
+ info.op.inline_send.len = ib_wr->sg_list[0].length;
+ ret = ukqp->ops.iw_inline_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
+ } else {
+ info.op.send.num_sges = ib_wr->num_sge;
+ info.op.send.sg_list = (struct i40iw_sge *)ib_wr->sg_list;
+ ret = ukqp->ops.iw_send(ukqp, &info, rdma_wr(ib_wr)->rkey, false);
+ }
+
+ if (ret)
+ err = -EIO;
+ break;
+ case IB_WR_RDMA_WRITE:
+ info.op_type = I40IW_OP_TYPE_RDMA_WRITE;
+
+ if (ib_wr->send_flags & IB_SEND_INLINE) {
+ info.op.inline_rdma_write.data = (void *)(unsigned long)ib_wr->sg_list[0].addr;
+ info.op.inline_rdma_write.len = ib_wr->sg_list[0].length;
+ info.op.inline_rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
+ info.op.inline_rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
+ info.op.inline_rdma_write.rem_addr.len = ib_wr->sg_list->length;
+ ret = ukqp->ops.iw_inline_rdma_write(ukqp, &info, false);
+ } else {
+ info.op.rdma_write.lo_sg_list = (void *)ib_wr->sg_list;
+ info.op.rdma_write.num_lo_sges = ib_wr->num_sge;
+ info.op.rdma_write.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
+ info.op.rdma_write.rem_addr.stag = rdma_wr(ib_wr)->rkey;
+ info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
+ ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
+ }
+
+ if (ret)
+ err = -EIO;
+ break;
+ case IB_WR_RDMA_READ:
+ info.op_type = I40IW_OP_TYPE_RDMA_READ;
+ info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
+ info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;
+ info.op.rdma_read.rem_addr.len = ib_wr->sg_list->length;
+ info.op.rdma_read.lo_addr.tag_off = ib_wr->sg_list->addr;
+ info.op.rdma_read.lo_addr.stag = ib_wr->sg_list->lkey;
+ info.op.rdma_read.lo_addr.len = ib_wr->sg_list->length;
+ ret = ukqp->ops.iw_rdma_read(ukqp, &info, false, false);
+ if (ret)
+ err = -EIO;
+ break;
+ default:
+ err = -EINVAL;
+ i40iw_pr_err(" upost_send bad opcode = 0x%x\n",
+ ib_wr->opcode);
+ break;
+ }
+
+ if (err)
+ break;
+ ib_wr = ib_wr->next;
+ }
+
+ if (err)
+ *bad_wr = ib_wr;
+ else
+ ukqp->ops.iw_qp_post_wr(ukqp);
+ spin_unlock_irqrestore(&iwqp->lock, flags);
+
+ return err;
+}
+
+/**
+ * i40iw_post_recv - post receive wr for kernel application
+ * @ibqp: ib qp pointer
+ * @ib_wr: work request for receive
+ * @bad_wr: bad wr caused an error
+ */
+static int i40iw_post_recv(struct ib_qp *ibqp,
+ struct ib_recv_wr *ib_wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct i40iw_qp *iwqp;
+ struct i40iw_qp_uk *ukqp;
+ struct i40iw_post_rq_info post_recv;
+ struct i40iw_sge sg_list[I40IW_MAX_WQ_FRAGMENT_COUNT];
+ enum i40iw_status_code ret = 0;
+ unsigned long flags;
+
+ iwqp = (struct i40iw_qp *)ibqp;
+ ukqp = &iwqp->sc_qp.qp_uk;
+
+ memset(&post_recv, 0, sizeof(post_recv));
+ spin_lock_irqsave(&iwqp->lock, flags);
+ while (ib_wr) {
+ post_recv.num_sges = ib_wr->num_sge;
+ post_recv.wr_id = ib_wr->wr_id;
+ i40iw_copy_sg_list(sg_list, ib_wr->sg_list, ib_wr->num_sge);
+ post_recv.sg_list = sg_list;
+ ret = ukqp->ops.iw_post_receive(ukqp, &post_recv);
+ if (ret) {
+ i40iw_pr_err(" post_recv err %d\n", ret);
+ *bad_wr = ib_wr;
+ goto out;
+ }
+ ib_wr = ib_wr->next;
+ }
+ out:
+ spin_unlock_irqrestore(&iwqp->lock, flags);
+ if (ret)
+ return -ENOSYS;
+ return 0;
+}
+
+/**
+ * i40iw_poll_cq - poll cq for completion (kernel apps)
+ * @ibcq: cq to poll
+ * @num_entries: number of entries to poll
+ * @entry: wr of entry completed
+ */
+static int i40iw_poll_cq(struct ib_cq *ibcq,
+ int num_entries,
+ struct ib_wc *entry)
+{
+ struct i40iw_cq *iwcq;
+ int cqe_count = 0;
+ struct i40iw_cq_poll_info cq_poll_info;
+ enum i40iw_status_code ret;
+ struct i40iw_cq_uk *ukcq;
+ struct i40iw_sc_qp *qp;
+ unsigned long flags;
+
+ iwcq = (struct i40iw_cq *)ibcq;
+ ukcq = &iwcq->sc_cq.cq_uk;
+
+ spin_lock_irqsave(&iwcq->lock, flags);
+ while (cqe_count < num_entries) {
+ ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);
+ if (ret == I40IW_ERR_QUEUE_EMPTY) {
+ break;
+ } else if (ret) {
+ if (!cqe_count)
+ cqe_count = -1;
+ break;
+ }
+ entry->wc_flags = 0;
+ entry->wr_id = cq_poll_info.wr_id;
+ if (!cq_poll_info.error)
+ entry->status = IB_WC_SUCCESS;
+ else
+ entry->status = IB_WC_WR_FLUSH_ERR;
+
+ switch (cq_poll_info.op_type) {
+ case I40IW_OP_TYPE_RDMA_WRITE:
+ entry->opcode = IB_WC_RDMA_WRITE;
+ break;
+ case I40IW_OP_TYPE_RDMA_READ_INV_STAG:
+ case I40IW_OP_TYPE_RDMA_READ:
+ entry->opcode = IB_WC_RDMA_READ;
+ break;
+ case I40IW_OP_TYPE_SEND_SOL:
+ case I40IW_OP_TYPE_SEND_SOL_INV:
+ case I40IW_OP_TYPE_SEND_INV:
+ case I40IW_OP_TYPE_SEND:
+ entry->opcode = IB_WC_SEND;
+ break;
+ case I40IW_OP_TYPE_REC:
+ entry->opcode = IB_WC_RECV;
+ break;
+ default:
+ entry->opcode = IB_WC_RECV;
+ break;
+ }
+
+ entry->vendor_err =
+ cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
+ entry->ex.imm_data = 0;
+ qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle;
+ entry->qp = (struct ib_qp *)qp->back_qp;
+ entry->src_qp = cq_poll_info.qp_id;
+ entry->byte_len = cq_poll_info.bytes_xfered;
+ entry++;
+ cqe_count++;
+ }
+ spin_unlock_irqrestore(&iwcq->lock, flags);
+ return cqe_count;
+}
+
+/**
+ * i40iw_req_notify_cq - arm cq kernel application
+ * @ibcq: cq to arm
+ * @notify_flags: notofication flags
+ */
+static int i40iw_req_notify_cq(struct ib_cq *ibcq,
+ enum ib_cq_notify_flags notify_flags)
+{
+ struct i40iw_cq *iwcq;
+ struct i40iw_cq_uk *ukcq;
+ enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_SOLICITED;
+
+ iwcq = (struct i40iw_cq *)ibcq;
+ ukcq = &iwcq->sc_cq.cq_uk;
+ if (notify_flags == IB_CQ_NEXT_COMP)
+ cq_notify = IW_CQ_COMPL_EVENT;
+ ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
+ return 0;
+}
+
+/**
+ * i40iw_port_immutable - return port's immutable data
+ * @ibdev: ib dev struct
+ * @port_num: port number
+ * @immutable: immutable data for the port return
+ */
+static int i40iw_port_immutable(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_immutable *immutable)
+{
+ struct ib_port_attr attr;
+ int err;
+
+ err = i40iw_query_port(ibdev, port_num, &attr);
+
+ if (err)
+ return err;
+
+ immutable->pkey_tbl_len = attr.pkey_tbl_len;
+ immutable->gid_tbl_len = attr.gid_tbl_len;
+ immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+ return 0;
+}
+
+/**
+ * i40iw_get_protocol_stats - Populates the rdma_stats structure
+ * @ibdev: ib dev struct
+ * @stats: iw protocol stats struct
+ */
+static int i40iw_get_protocol_stats(struct ib_device *ibdev,
+ union rdma_protocol_stats *stats)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+ struct i40iw_sc_dev *dev = &iwdev->sc_dev;
+ struct i40iw_dev_pestat *devstat = &dev->dev_pestat;
+ struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
+ struct timespec curr_time;
+ static struct timespec last_rd_time = {0, 0};
+ enum i40iw_status_code status = 0;
+ unsigned long flags;
+
+ curr_time = current_kernel_time();
+ memset(stats, 0, sizeof(*stats));
+
+ if (dev->is_pf) {
+ spin_lock_irqsave(&devstat->stats_lock, flags);
+ devstat->ops.iw_hw_stat_read_all(devstat,
+ &devstat->hw_stats);
+ spin_unlock_irqrestore(&devstat->stats_lock, flags);
+ } else {
+ if (((u64)curr_time.tv_sec - (u64)last_rd_time.tv_sec) > 1)
+ status = i40iw_vchnl_vf_get_pe_stats(dev,
+ &devstat->hw_stats);
+
+ if (status)
+ return -ENOSYS;
+ }
+
+ stats->iw.ipInReceives = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXPKTS] +
+ hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXPKTS];
+ stats->iw.ipInTruncatedPkts = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXTRUNC] +
+ hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXTRUNC];
+ stats->iw.ipInDiscards = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4RXDISCARD] +
+ hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6RXDISCARD];
+ stats->iw.ipOutNoRoutes = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP4TXNOROUTE] +
+ hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_IP6TXNOROUTE];
+ stats->iw.ipReasmReqds = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXFRAGS] +
+ hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXFRAGS];
+ stats->iw.ipFragCreates = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXFRAGS] +
+ hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXFRAGS];
+ stats->iw.ipInMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4RXMCPKTS] +
+ hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6RXMCPKTS];
+ stats->iw.ipOutMcastPkts = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP4TXMCPKTS] +
+ hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_IP6TXMCPKTS];
+ stats->iw.tcpOutSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPTXSEG];
+ stats->iw.tcpInSegs = hw_stats->stat_value_64[I40IW_HW_STAT_INDEX_TCPRXSEGS];
+ stats->iw.tcpRetransSegs = hw_stats->stat_value_32[I40IW_HW_STAT_INDEX_TCPRTXSEG];
+
+ last_rd_time = curr_time;
+ return 0;
+}
+
+/**
+ * i40iw_query_gid - Query port GID
+ * @ibdev: device pointer from stack
+ * @port: port number
+ * @index: Entry index
+ * @gid: Global ID
+ */
+static int i40iw_query_gid(struct ib_device *ibdev,
+ u8 port,
+ int index,
+ union ib_gid *gid)
+{
+ struct i40iw_device *iwdev = to_iwdev(ibdev);
+
+ memset(gid->raw, 0, sizeof(gid->raw));
+ ether_addr_copy(gid->raw, iwdev->netdev->dev_addr);
+ return 0;
+}
+
+/**
+ * i40iw_modify_port Modify port properties
+ * @ibdev: device pointer from stack
+ * @port: port number
+ * @port_modify_mask: mask for port modifications
+ * @props: port properties
+ */
+static int i40iw_modify_port(struct ib_device *ibdev,
+ u8 port,
+ int port_modify_mask,
+ struct ib_port_modify *props)
+{
+ return 0;
+}
+
+/**
+ * i40iw_query_pkey - Query partition key
+ * @ibdev: device pointer from stack
+ * @port: port number
+ * @index: index of pkey
+ * @pkey: pointer to store the pkey
+ */
+static int i40iw_query_pkey(struct ib_device *ibdev,
+ u8 port,
+ u16 index,
+ u16 *pkey)
+{
+ *pkey = 0;
+ return 0;
+}
+
+/**
+ * i40iw_create_ah - create address handle
+ * @ibpd: ptr of pd
+ * @ah_attr: address handle attributes
+ */
+static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
+ struct ib_ah_attr *attr)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+/**
+ * i40iw_destroy_ah - Destroy address handle
+ * @ah: pointer to address handle
+ */
+static int i40iw_destroy_ah(struct ib_ah *ah)
+{
+ return -ENOSYS;
+}
+
+/**
+ * i40iw_init_rdma_device - initialization of iwarp device
+ * @iwdev: iwarp device
+ */
+static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev)
+{
+ struct i40iw_ib_device *iwibdev;
+ struct net_device *netdev = iwdev->netdev;
+ struct pci_dev *pcidev = (struct pci_dev *)iwdev->hw.dev_context;
+
+ iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
+ if (!iwibdev) {
+ i40iw_pr_err("iwdev == NULL\n");
+ return NULL;
+ }
+ strlcpy(iwibdev->ibdev.name, "i40iw%d", IB_DEVICE_NAME_MAX);
+ iwibdev->ibdev.owner = THIS_MODULE;
+ iwdev->iwibdev = iwibdev;
+ iwibdev->iwdev = iwdev;
+
+ iwibdev->ibdev.node_type = RDMA_NODE_RNIC;
+ ether_addr_copy((u8 *)&iwibdev->ibdev.node_guid, netdev->dev_addr);
+
+ iwibdev->ibdev.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_POST_RECV) |
+ (1ull << IB_USER_VERBS_CMD_POST_SEND);
+ iwibdev->ibdev.phys_port_cnt = 1;
+ iwibdev->ibdev.num_comp_vectors = 1;
+ iwibdev->ibdev.dma_device = &pcidev->dev;
+ iwibdev->ibdev.dev.parent = &pcidev->dev;
+ iwibdev->ibdev.query_port = i40iw_query_port;
+ iwibdev->ibdev.modify_port = i40iw_modify_port;
+ iwibdev->ibdev.query_pkey = i40iw_query_pkey;
+ iwibdev->ibdev.query_gid = i40iw_query_gid;
+ iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
+ iwibdev->ibdev.dealloc_ucontext = i40iw_dealloc_ucontext;
+ iwibdev->ibdev.mmap = i40iw_mmap;
+ iwibdev->ibdev.alloc_pd = i40iw_alloc_pd;
+ iwibdev->ibdev.dealloc_pd = i40iw_dealloc_pd;
+ iwibdev->ibdev.create_qp = i40iw_create_qp;
+ iwibdev->ibdev.modify_qp = i40iw_modify_qp;
+ iwibdev->ibdev.query_qp = i40iw_query_qp;
+ iwibdev->ibdev.destroy_qp = i40iw_destroy_qp;
+ iwibdev->ibdev.create_cq = i40iw_create_cq;
+ iwibdev->ibdev.destroy_cq = i40iw_destroy_cq;
+ iwibdev->ibdev.get_dma_mr = i40iw_get_dma_mr;
+ iwibdev->ibdev.reg_user_mr = i40iw_reg_user_mr;
+ iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
+ iwibdev->ibdev.get_protocol_stats = i40iw_get_protocol_stats;
+ iwibdev->ibdev.query_device = i40iw_query_device;
+ iwibdev->ibdev.create_ah = i40iw_create_ah;
+ iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
+ iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
+ if (!iwibdev->ibdev.iwcm) {
+ ib_dealloc_device(&iwibdev->ibdev);
+ i40iw_pr_err("iwcm == NULL\n");
+ return NULL;
+ }
+
+ iwibdev->ibdev.iwcm->add_ref = i40iw_add_ref;
+ iwibdev->ibdev.iwcm->rem_ref = i40iw_rem_ref;
+ iwibdev->ibdev.iwcm->get_qp = i40iw_get_qp;
+ iwibdev->ibdev.iwcm->connect = i40iw_connect;
+ iwibdev->ibdev.iwcm->accept = i40iw_accept;
+ iwibdev->ibdev.iwcm->reject = i40iw_reject;
+ iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
+ iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
+ iwibdev->ibdev.get_port_immutable = i40iw_port_immutable;
+ iwibdev->ibdev.poll_cq = i40iw_poll_cq;
+ iwibdev->ibdev.req_notify_cq = i40iw_req_notify_cq;
+ iwibdev->ibdev.post_send = i40iw_post_send;
+ iwibdev->ibdev.post_recv = i40iw_post_recv;
+ return iwibdev;
+}
+
+/**
+ * i40iw_port_ibevent - indicate port event
+ * @iwdev: iwarp device
+ */
+void i40iw_port_ibevent(struct i40iw_device *iwdev)
+{
+ struct i40iw_ib_device *iwibdev = iwdev->iwibdev;
+ struct ib_event event;
+
+ event.device = &iwibdev->ibdev;
+ event.element.port_num = 1;
+ event.event = iwdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
+ ib_dispatch_event(&event);
+}
+
+/**
+ * i40iw_unregister_rdma_device - unregister of iwarp from IB
+ * @iwibdev: rdma device ptr
+ */
+static void i40iw_unregister_rdma_device(struct i40iw_ib_device *iwibdev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i)
+ device_remove_file(&iwibdev->ibdev.dev,
+ i40iw_dev_attributes[i]);
+ ib_unregister_device(&iwibdev->ibdev);
+}
+
+/**
+ * i40iw_destroy_rdma_device - destroy rdma device and free resources
+ * @iwibdev: IB device ptr
+ */
+void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev)
+{
+ if (!iwibdev)
+ return;
+
+ i40iw_unregister_rdma_device(iwibdev);
+ kfree(iwibdev->ibdev.iwcm);
+ iwibdev->ibdev.iwcm = NULL;
+ ib_dealloc_device(&iwibdev->ibdev);
+}
+
+/**
+ * i40iw_register_rdma_device - register iwarp device to IB
+ * @iwdev: iwarp device
+ */
+int i40iw_register_rdma_device(struct i40iw_device *iwdev)
+{
+ int i, ret;
+ struct i40iw_ib_device *iwibdev;
+
+ iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
+ if (!iwdev->iwibdev)
+ return -ENOSYS;
+ iwibdev = iwdev->iwibdev;
+
+ ret = ib_register_device(&iwibdev->ibdev, NULL);
+ if (ret)
+ goto error;
+
+ for (i = 0; i < ARRAY_SIZE(i40iw_dev_attributes); ++i) {
+ ret =
+ device_create_file(&iwibdev->ibdev.dev,
+ i40iw_dev_attributes[i]);
+ if (ret) {
+ while (i > 0) {
+ i--;
+ device_remove_file(&iwibdev->ibdev.dev, i40iw_dev_attributes[i]);
+ }
+ ib_unregister_device(&iwibdev->ibdev);
+ goto error;
+ }
+ }
+ return 0;
+error:
+ kfree(iwdev->iwibdev->ibdev.iwcm);
+ iwdev->iwibdev->ibdev.iwcm = NULL;
+ ib_dealloc_device(&iwdev->iwibdev->ibdev);
+ return -ENOSYS;
+}
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.h b/drivers/infiniband/hw/i40iw/i40iw_verbs.h
new file mode 100644
index 0000000..1101f77
--- /dev/null
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.h
@@ -0,0 +1,173 @@
+/*******************************************************************************
+*
+* Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
+*
+* This software is available to you under a choice of one of two
+* licenses. You may choose to be licensed under the terms of the GNU
+* General Public License (GPL) Version 2, available from the file
+* COPYING in the main directory of this source tree, or the
+* OpenFabrics.org BSD license below:
+*
+* Redistribution and use in source and binary forms, with or
+* without modification, are permitted provided that the following
+* conditions are met:
+*
+* - Redistributions of source code must retain the above
+* copyright notice, this list of conditions and the following
+* disclaimer.
+*
+* - Redistributions in binary form must reproduce the above
+* copyright notice, this list of conditions and the following
+* disclaimer in the documentation and/or other materials
+* provided with the distribution.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+*******************************************************************************/
+
+#ifndef I40IW_VERBS_H
+#define I40IW_VERBS_H
+
+struct i40iw_ucontext {
+ struct ib_ucontext ibucontext;
+ struct i40iw_device *iwdev;
+ struct list_head cq_reg_mem_list;
+ spinlock_t cq_reg_mem_list_lock; /* memory list for cq's */
+ struct list_head qp_reg_mem_list;
+ spinlock_t qp_reg_mem_list_lock; /* memory list for qp's */
+};
+
+struct i40iw_pd {
+ struct ib_pd ibpd;
+ struct i40iw_sc_pd sc_pd;
+ atomic_t usecount;
+};
+
+struct i40iw_hmc_pble {
+ union {
+ u32 idx;
+ dma_addr_t addr;
+ };
+};
+
+struct i40iw_cq_mr {
+ struct i40iw_hmc_pble cq_pbl;
+ dma_addr_t shadow;
+};
+
+struct i40iw_qp_mr {
+ struct i40iw_hmc_pble sq_pbl;
+ struct i40iw_hmc_pble rq_pbl;
+ dma_addr_t shadow;
+ struct page *sq_page;
+};
+
+struct i40iw_pbl {
+ struct list_head list;
+ union {
+ struct i40iw_qp_mr qp_mr;
+ struct i40iw_cq_mr cq_mr;
+ };
+
+ bool pbl_allocated;
+ u64 user_base;
+ struct i40iw_pble_alloc pble_alloc;
+ struct i40iw_mr *iwmr;
+};
+
+#define MAX_SAVE_PAGE_ADDRS 4
+struct i40iw_mr {
+ union {
+ struct ib_mr ibmr;
+ struct ib_mw ibmw;
+ struct ib_fmr ibfmr;
+ };
+ struct ib_umem *region;
+ u16 type;
+ u32 page_cnt;
+ u32 stag;
+ u64 length;
+ u64 pgaddrmem[MAX_SAVE_PAGE_ADDRS];
+ struct i40iw_pbl iwpbl;
+};
+
+struct i40iw_cq {
+ struct ib_cq ibcq;
+ struct i40iw_sc_cq sc_cq;
+ u16 cq_head;
+ u16 cq_size;
+ u16 cq_number;
+ bool user_mode;
+ u32 polled_completions;
+ u32 cq_mem_size;
+ struct i40iw_dma_mem kmem;
+ spinlock_t lock; /* for poll cq */
+ struct i40iw_pbl *iwpbl;
+};
+
+struct disconn_work {
+ struct work_struct work;
+ struct i40iw_qp *iwqp;
+};
+
+struct iw_cm_id;
+struct ietf_mpa_frame;
+struct i40iw_ud_file;
+
+struct i40iw_qp_kmode {
+ struct i40iw_dma_mem dma_mem;
+ u64 *wrid_mem;
+};
+
+struct i40iw_qp {
+ struct ib_qp ibqp;
+ struct i40iw_sc_qp sc_qp;
+ struct i40iw_device *iwdev;
+ struct i40iw_cq *iwscq;
+ struct i40iw_cq *iwrcq;
+ struct i40iw_pd *iwpd;
+ struct i40iw_qp_host_ctx_info ctx_info;
+ struct i40iwarp_offload_info iwarp_info;
+ void *allocated_buffer;
+ atomic_t refcount;
+ struct iw_cm_id *cm_id;
+ void *cm_node;
+ struct ib_mr *lsmm_mr;
+ struct work_struct work;
+ enum ib_qp_state ibqp_state;
+ u32 iwarp_state;
+ u32 qp_mem_size;
+ u32 last_aeq;
+ atomic_t close_timer_started;
+ spinlock_t lock; /* for post work requests */
+ struct i40iw_qp_context *iwqp_context;
+ void *pbl_vbase;
+ dma_addr_t pbl_pbase;
+ struct page *page;
+ u8 active_conn:1;
+ u8 user_mode:1;
+ u8 hte_added:1;
+ u8 flush_issued:1;
+ u8 destroyed:1;
+ u8 sig_all:1;
+ u8 pau_mode:1;
+ u8 rsvd:1;
+ u16 term_sq_flush_code;
+ u16 term_rq_flush_code;
+ u8 hw_iwarp_state;
+ u8 hw_tcp_state;
+ struct i40iw_qp_kmode kqp;
+ struct i40iw_dma_mem host_ctx;
+ struct timer_list terminate_timer;
+ struct i40iw_pbl *iwpbl;
+ struct i40iw_dma_mem q2_ctx_mem;
+ struct i40iw_dma_mem ietf_mem;
+};
+#endif
--
2.5.3
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