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kernel_samsung_a34x-permissive/drivers/infiniband/hw/i40iw/i40iw_verbs.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/*******************************************************************************
*
* 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 <linux/hugetlb.h>
#include <linux/irq.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->ldev->pcidev->vendor;
props->vendor_part_id = iwdev->ldev->pcidev->device;
props->hw_ver = (u32)iwdev->sc_dev.hw_rev;
props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
props->max_qp = iwdev->max_qp - iwdev->used_qps;
props->max_qp_wr = I40IW_MAX_QP_WRS;
props->max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
props->max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
props->max_cq = iwdev->max_cq - iwdev->used_cqs;
props->max_cqe = iwdev->max_cqe;
props->max_mr = iwdev->max_mr - iwdev->used_mrs;
props->max_pd = iwdev->max_pd - iwdev->used_pds;
props->max_sge_rd = I40IW_MAX_SGE_RD;
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;
props->max_fast_reg_page_list_len = I40IW_MAX_PAGES_PER_FMR;
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;
/* props being zeroed by the caller, avoid zeroing it here */
props->max_mtu = IB_MTU_4096;
props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
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 = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
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 < 4 || req.userspace_ver > I40IW_ABI_VER) {
i40iw_pr_err("Unsupported provider library version %u.\n", req.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 = req.userspace_ver;
ucontext = kzalloc(sizeof(*ucontext), GFP_KERNEL);
if (!ucontext)
return ERR_PTR(-ENOMEM);
ucontext->iwdev = iwdev;
ucontext->abi_ver = req.userspace_ver;
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 = to_ucontext(context);
u64 dbaddr;
if (vma->vm_pgoff || vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
dbaddr = I40IW_DB_ADDR_OFFSET + pci_resource_start(ucontext->iwdev->ldev->pcidev, 0);
if (io_remap_pfn_range(vma, vma->vm_start, dbaddr >> PAGE_SHIFT, PAGE_SIZE,
pgprot_noncached(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;
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 = qp->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;
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 = qp->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;
struct i40iw_ucontext *ucontext;
u32 pd_id = 0;
int err;
if (iwdev->closing)
return ERR_PTR(-ENODEV);
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;
if (context) {
ucontext = to_ucontext(context);
dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id, ucontext->abi_ver);
memset(&uresp, 0, sizeof(uresp));
uresp.pd_id = pd_id;
if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) {
err = -EFAULT;
goto error;
}
} else {
dev->iw_pd_ops->pd_init(dev, sc_pd, pd_id, -1);
}
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_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) {
iwpbl->on_list = false;
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)
{
struct i40iw_pbl *iwpbl = &iwqp->iwpbl;
i40iw_ieq_cleanup_qp(iwdev->vsi.ieq, &iwqp->sc_qp);
i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
if (qp_num)
i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
if (iwpbl->pbl_allocated)
i40iw_free_pble(iwdev->pble_rsrc, &iwpbl->pble_alloc);
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);
}
/**
* 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;
u8 sqshift;
u32 size;
enum i40iw_status_code status;
struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
i40iw_get_wqe_shift(ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
status = i40iw_get_sqdepth(ukinfo->sq_size, sqshift, &sqdepth);
if (status)
return -ENOMEM;
status = i40iw_get_rqdepth(ukinfo->rq_size, I40IW_MAX_RQ_WQE_SHIFT, &rqdepth);
if (status)
return -ENOMEM;
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 = sqdepth >> sqshift;
ukinfo->rq_size = rqdepth >> I40IW_MAX_RQ_WQE_SHIFT;
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 (iwdev->closing)
return ERR_PTR(-ENODEV);
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;
if (init_attr->cap.max_send_sge > I40IW_MAX_WQ_FRAGMENT_COUNT)
init_attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
if (init_attr->cap.max_recv_sge > I40IW_MAX_WQ_FRAGMENT_COUNT)
init_attr->cap.max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
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.vsi = &iwdev->vsi;
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;
init_info.qp_uk_init_info.max_inline_data = init_attr->cap.max_inline_data;
mem = kzalloc(sizeof(*iwqp), GFP_KERNEL);
if (!mem)
return ERR_PTR(-ENOMEM);
iwqp = (struct i40iw_qp *)mem;
iwqp->allocated_buffer = 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->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 = -EINVAL;
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) {
struct i40iw_pbl *iwpbl;
spin_lock_irqsave(
&ucontext->qp_reg_mem_list_lock, flags);
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 (!iwpbl) {
err_code = -ENODATA;
i40iw_pr_err("no pbl info\n");
goto error;
}
memcpy(&iwqp->iwpbl, iwpbl, sizeof(iwqp->iwpbl));
}
}
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->fast_reg_en = true;
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);
i40iw_add_devusecount(iwdev);
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);
}
}
init_completion(&iwqp->sq_drained);
init_completion(&iwqp->rq_drained);
return &iwqp->ibqp;
error:
i40iw_free_qp_resources(iwdev, iwqp, qp_num);
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_state = iwqp->ibqp_state;
attr->cur_qp_state = attr->qp_state;
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_inline_data = I40IW_MAX_INLINE_DATA_SIZE;
attr->cap.max_send_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
attr->cap.max_recv_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
attr->port_num = 1;
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;
init_attr->port_num = 1;
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)
{
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_modify_qp_info *m_info;
struct i40iw_gen_ae_info ae_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;
if (!i40iw_handle_cqp_op(iwdev, cqp_request))
return;
switch (m_info->next_iwarp_state) {
case I40IW_QP_STATE_RTS:
if (iwqp->iwarp_state == I40IW_QP_STATE_IDLE)
i40iw_send_reset(iwqp->cm_node);
/* fall through */
case I40IW_QP_STATE_IDLE:
case I40IW_QP_STATE_TERMINATE:
case I40IW_QP_STATE_CLOSING:
ae_info.ae_code = I40IW_AE_BAD_CLOSE;
ae_info.ae_source = 0;
i40iw_gen_ae(iwdev, &iwqp->sc_qp, &ae_info, false);
break;
case I40IW_QP_STATE_ERROR:
default:
break;
}
}
/**
* 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) {
if (iwdev->closing && attr->qp_state != IB_QPS_ERR) {
err = -EINVAL;
goto exit;
}
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)
i40iw_terminate_del_timer(&iwqp->sc_qp);
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 (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);
spin_lock_irqsave(&iwqp->lock, flags);
iwqp->iwarp_state = info.next_iwarp_state;
spin_unlock_irqrestore(&iwqp->lock, flags);
}
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);
i40iw_cm_disconn(iwqp);
}
} else {
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->cm_id) {
if (atomic_inc_return(&iwqp->close_timer_started) == 1) {
iwqp->cm_id->add_ref(iwqp->cm_id);
i40iw_schedule_cm_timer(iwqp->cm_node,
(struct i40iw_puda_buf *)iwqp,
I40IW_TIMER_TYPE_CLOSE, 1, 0);
}
}
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);
}
/**
* i40iw_cq_wq_destroy - send cq destroy cqp
* @iwdev: iwarp device
* @cq: hardware control cq
*/
void i40iw_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;
i40iw_cq_wq_destroy(iwdev, cq);
cq_free_resources(iwdev, iwcq);
kfree(iwcq);
i40iw_rem_devusecount(iwdev);
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 (iwdev->closing)
return ERR_PTR(-ENODEV);
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;
if (attr->comp_vector < iwdev->ceqs_count)
info.ceq_id = attr->comp_vector;
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))) {
err_code = -EFAULT;
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;
}
}
i40iw_add_devusecount(iwdev);
return (struct ib_cq *)iwcq;
cq_destroy:
i40iw_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_rem_devusecount(iwdev);
}
/**
* 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;
i40iw_add_devusecount(iwdev);
}
return stag;
}
/**
* i40iw_next_pbl_addr - Get next pbl address
* @pbl: pointer to a pble
* @pinfo: info pointer
* @idx: index
*/
static inline u64 *i40iw_next_pbl_addr(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, i;
struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
struct i40iw_pble_info *pinfo;
struct scatterlist *sg;
u64 pg_addr = 0;
u32 idx = 0;
pinfo = (level == I40IW_LEVEL_1) ? NULL : palloc->level2.leaf;
for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
chunk_pages = sg_dma_len(sg) >> region->page_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++) {
pg_addr = sg_dma_address(sg) +
(i << region->page_shift);
if ((entry + i) == 0)
*pbl = cpu_to_le64(pg_addr & iwmr->page_msk);
else if (!(pg_addr & ~iwmr->page_msk))
*pbl = cpu_to_le64(pg_addr);
else
continue;
pbl = i40iw_next_pbl_addr(pbl, &pinfo, &idx);
}
}
}
/**
* i40iw_set_hugetlb_params - set MR pg size and mask to huge pg values.
* @addr: virtual address
* @iwmr: mr pointer for this memory registration
*/
static void i40iw_set_hugetlb_values(u64 addr, struct i40iw_mr *iwmr)
{
struct vm_area_struct *vma;
struct hstate *h;
down_read(&current->mm->mmap_sem);
vma = find_vma(current->mm, addr);
if (vma && is_vm_hugetlb_page(vma)) {
h = hstate_vma(vma);
if (huge_page_size(h) == 0x200000) {
iwmr->page_size = huge_page_size(h);
iwmr->page_msk = huge_page_mask(h);
}
}
up_read(&current->mm->mmap_sem);
}
/**
* i40iw_check_mem_contiguous - check if pbls stored in arr are contiguous
* @arr: lvl1 pbl array
* @npages: page count
* pg_size: page size
*
*/
static bool i40iw_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size)
{
u32 pg_idx;
for (pg_idx = 0; pg_idx < npages; pg_idx++) {
if ((*arr + (pg_size * pg_idx)) != arr[pg_idx])
return false;
}
return true;
}
/**
* i40iw_check_mr_contiguous - check if MR is physically contiguous
* @palloc: pbl allocation struct
* pg_size: page size
*/
static bool i40iw_check_mr_contiguous(struct i40iw_pble_alloc *palloc, u32 pg_size)
{
struct i40iw_pble_level2 *lvl2 = &palloc->level2;
struct i40iw_pble_info *leaf = lvl2->leaf;
u64 *arr = NULL;
u64 *start_addr = NULL;
int i;
bool ret;
if (palloc->level == I40IW_LEVEL_1) {
arr = (u64 *)palloc->level1.addr;
ret = i40iw_check_mem_contiguous(arr, palloc->total_cnt, pg_size);
return ret;
}
start_addr = (u64 *)leaf->addr;
for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) {
arr = (u64 *)leaf->addr;
if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr)
return false;
ret = i40iw_check_mem_contiguous(arr, leaf->cnt, pg_size);
if (!ret)
return false;
}
return true;
}
/**
* 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
*/
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) {
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);
if (use_pbles)
iwmr->pgaddrmem[0] = *pbl;
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;
u32 pg_size;
int err;
int total;
bool ret = true;
total = req->sq_pages + req->rq_pages + req->cq_pages;
pg_size = iwmr->page_size;
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 (iwmr->type == IW_MEMREG_TYPE_QP) {
hmc_p = &qpmr->sq_pbl;
qpmr->shadow = (dma_addr_t)arr[total];
if (use_pbles) {
ret = i40iw_check_mem_contiguous(arr, req->sq_pages, pg_size);
if (ret)
ret = i40iw_check_mem_contiguous(&arr[req->sq_pages], req->rq_pages, pg_size);
}
if (!ret) {
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[req->sq_pages];
}
} else { /* CQ */
hmc_p = &cqmr->cq_pbl;
cqmr->shadow = (dma_addr_t)arr[total];
if (use_pbles)
ret = i40iw_check_mem_contiguous(arr, req->cq_pages, pg_size);
if (!ret)
hmc_p->idx = palloc->level1.idx;
else
hmc_p->addr = arr[0];
}
if (use_pbles && ret) {
i40iw_free_pble(iwdev->pble_rsrc, palloc);
iwpbl->pbl_allocated = false;
}
return err;
}
/**
* i40iw_hw_alloc_stag - cqp command to allocate stag
* @iwdev: iwarp device
* @iwmr: iwarp mr pointer
*/
static int i40iw_hw_alloc_stag(struct i40iw_device *iwdev, struct i40iw_mr *iwmr)
{
struct i40iw_allocate_stag_info *info;
struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
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;
info = &cqp_info->in.u.alloc_stag.info;
memset(info, 0, sizeof(*info));
info->page_size = PAGE_SIZE;
info->stag_idx = iwmr->stag >> I40IW_CQPSQ_STAG_IDX_SHIFT;
info->pd_id = iwpd->sc_pd.pd_id;
info->total_len = iwmr->length;
info->remote_access = true;
cqp_info->cqp_cmd = OP_ALLOC_STAG;
cqp_info->post_sq = 1;
cqp_info->in.u.alloc_stag.dev = &iwdev->sc_dev;
cqp_info->in.u.alloc_stag.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_alloc_mr - register stag for fast memory registration
* @pd: ibpd pointer
* @mr_type: memory for stag registrion
* @max_num_sg: man number of pages
*/
static struct ib_mr *i40iw_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg)
{
struct i40iw_pd *iwpd = to_iwpd(pd);
struct i40iw_device *iwdev = to_iwdev(pd->device);
struct i40iw_pble_alloc *palloc;
struct i40iw_pbl *iwpbl;
struct i40iw_mr *iwmr;
enum i40iw_status_code status;
u32 stag;
int err_code = -ENOMEM;
iwmr = kzalloc(sizeof(*iwmr), GFP_KERNEL);
if (!iwmr)
return ERR_PTR(-ENOMEM);
stag = i40iw_create_stag(iwdev);
if (!stag) {
err_code = -EOVERFLOW;
goto err;
}
stag &= ~I40IW_CQPSQ_STAG_KEY_MASK;
iwmr->stag = stag;
iwmr->ibmr.rkey = stag;
iwmr->ibmr.lkey = stag;
iwmr->ibmr.pd = pd;
iwmr->ibmr.device = pd->device;
iwpbl = &iwmr->iwpbl;
iwpbl->iwmr = iwmr;
iwmr->type = IW_MEMREG_TYPE_MEM;
palloc = &iwpbl->pble_alloc;
iwmr->page_cnt = max_num_sg;
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)
goto err1;
if (palloc->level != I40IW_LEVEL_1)
goto err2;
err_code = i40iw_hw_alloc_stag(iwdev, iwmr);
if (err_code)
goto err2;
iwpbl->pbl_allocated = true;
i40iw_add_pdusecount(iwpd);
return &iwmr->ibmr;
err2:
i40iw_free_pble(iwdev->pble_rsrc, palloc);
err1:
i40iw_free_stag(iwdev, stag);
err:
kfree(iwmr);
return ERR_PTR(err_code);
}
/**
* i40iw_set_page - populate pbl list for fmr
* @ibmr: ib mem to access iwarp mr pointer
* @addr: page dma address fro pbl list
*/
static int i40iw_set_page(struct ib_mr *ibmr, u64 addr)
{
struct i40iw_mr *iwmr = to_iwmr(ibmr);
struct i40iw_pbl *iwpbl = &iwmr->iwpbl;
struct i40iw_pble_alloc *palloc = &iwpbl->pble_alloc;
u64 *pbl;
if (unlikely(iwmr->npages == iwmr->page_cnt))
return -ENOMEM;
pbl = (u64 *)palloc->level1.addr;
pbl[iwmr->npages++] = cpu_to_le64(addr);
return 0;
}
/**
* i40iw_map_mr_sg - map of sg list for fmr
* @ibmr: ib mem to access iwarp mr pointer
* @sg: scatter gather list for fmr
* @sg_nents: number of sg pages
*/
static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
int sg_nents, unsigned int *sg_offset)
{
struct i40iw_mr *iwmr = to_iwmr(ibmr);
iwmr->npages = 0;
return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, i40iw_set_page);
}
/**
* i40iw_drain_sq - drain the send queue
* @ibqp: ib qp pointer
*/
static void i40iw_drain_sq(struct ib_qp *ibqp)
{
struct i40iw_qp *iwqp = to_iwqp(ibqp);
struct i40iw_sc_qp *qp = &iwqp->sc_qp;
if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
wait_for_completion(&iwqp->sq_drained);
}
/**
* i40iw_drain_rq - drain the receive queue
* @ibqp: ib qp pointer
*/
static void i40iw_drain_rq(struct ib_qp *ibqp)
{
struct i40iw_qp *iwqp = to_iwqp(ibqp);
struct i40iw_sc_qp *qp = &iwqp->sc_qp;
if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
wait_for_completion(&iwqp->rq_drained);
}
/**
* 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;
stag_info->page_size = iwmr->page_size;
if (iwpbl->pbl_allocated) {
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;
u64 pbl_depth = 0;
u32 stag = 0;
u16 access;
u64 region_length;
bool use_pbles = false;
unsigned long flags;
int err = -ENOSYS;
int ret;
int pg_shift;
if (iwdev->closing)
return ERR_PTR(-ENODEV);
if (length > I40IW_MAX_MR_SIZE)
return ERR_PTR(-EINVAL);
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);
iwmr->page_size = PAGE_SIZE;
iwmr->page_msk = PAGE_MASK;
if (region->hugetlb && (req.reg_type == IW_MEMREG_TYPE_MEM))
i40iw_set_hugetlb_values(start, iwmr);
region_length = region->length + (start & (iwmr->page_size - 1));
pg_shift = ffs(iwmr->page_size) - 1;
pbl_depth = region_length >> pg_shift;
pbl_depth += (region_length & (iwmr->page_size - 1)) ? 1 : 0;
iwmr->length = region->length;
iwpbl->user_base = virt;
palloc = &iwpbl->pble_alloc;
iwmr->type = req.reg_type;
iwmr->page_cnt = (u32)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);
iwpbl->on_list = true;
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);
iwpbl->on_list = true;
spin_unlock_irqrestore(&ucontext->cq_reg_mem_list_lock, flags);
break;
case IW_MEMREG_TYPE_MEM:
use_pbles = (iwmr->page_cnt != 1);
access = I40IW_ACCESS_FLAGS_LOCALREAD;
err = i40iw_setup_pbles(iwdev, iwmr, use_pbles);
if (err)
goto error;
if (use_pbles) {
ret = i40iw_check_mr_contiguous(palloc, iwmr->page_size);
if (ret) {
i40iw_free_pble(iwdev->pble_rsrc, palloc);
iwpbl->pbl_allocated = false;
}
}
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 && iwpbl->pbl_allocated)
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;
iwmr->length = size;
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, 0, 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 (iwpbl->on_list) {
iwpbl->on_list = false;
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 (iwpbl->on_list) {
iwpbl->on_list = false;
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 && iwmr->type != IW_MEMREG_TYPE_QP)
i40iw_free_pble(iwdev->pble_rsrc, palloc);
kfree(iwmr);
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_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(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_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,
const struct ib_send_wr *ib_wr,
const 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;
bool inv_stag;
iwqp = (struct i40iw_qp *)ibqp;
ukqp = &iwqp->sc_qp.qp_uk;
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->flush_issued) {
err = -EINVAL;
goto out;
}
while (ib_wr) {
inv_stag = false;
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:
/* fall-through */
case IB_WR_SEND_WITH_INV:
if (ib_wr->opcode == 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;
} else {
if (ib_wr->send_flags & IB_SEND_SOLICITED)
info.op_type = I40IW_OP_TYPE_SEND_SOL_INV;
else
info.op_type = I40IW_OP_TYPE_SEND_INV;
}
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, ib_wr->ex.invalidate_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, ib_wr->ex.invalidate_rkey, false);
}
if (ret) {
if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
err = -ENOMEM;
else
err = -EINVAL;
}
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;
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;
ret = ukqp->ops.iw_rdma_write(ukqp, &info, false);
}
if (ret) {
if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
err = -ENOMEM;
else
err = -EINVAL;
}
break;
case IB_WR_RDMA_READ_WITH_INV:
inv_stag = true;
/* fall-through*/
case IB_WR_RDMA_READ:
if (ib_wr->num_sge > I40IW_MAX_SGE_RD) {
err = -EINVAL;
break;
}
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.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, inv_stag, false);
if (ret) {
if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
err = -ENOMEM;
else
err = -EINVAL;
}
break;
case IB_WR_LOCAL_INV:
info.op_type = I40IW_OP_TYPE_INV_STAG;
info.op.inv_local_stag.target_stag = ib_wr->ex.invalidate_rkey;
ret = ukqp->ops.iw_stag_local_invalidate(ukqp, &info, true);
if (ret)
err = -ENOMEM;
break;
case IB_WR_REG_MR:
{
struct i40iw_mr *iwmr = to_iwmr(reg_wr(ib_wr)->mr);
int flags = reg_wr(ib_wr)->access;
struct i40iw_pble_alloc *palloc = &iwmr->iwpbl.pble_alloc;
struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
struct i40iw_fast_reg_stag_info info;
memset(&info, 0, sizeof(info));
info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;
info.access_rights |= i40iw_get_user_access(flags);
info.stag_key = reg_wr(ib_wr)->key & 0xff;
info.stag_idx = reg_wr(ib_wr)->key >> 8;
info.page_size = reg_wr(ib_wr)->mr->page_size;
info.wr_id = ib_wr->wr_id;
info.addr_type = I40IW_ADDR_TYPE_VA_BASED;
info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
info.total_len = iwmr->ibmr.length;
info.reg_addr_pa = *(u64 *)palloc->level1.addr;
info.first_pm_pbl_index = palloc->level1.idx;
info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED;
if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR)
info.chunk_size = 1;
ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp, &info, true);
if (ret)
err = -ENOMEM;
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;
}
out:
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, const struct ib_recv_wr *ib_wr,
const 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;
int err = 0;
iwqp = (struct i40iw_qp *)ibqp;
ukqp = &iwqp->sc_qp.qp_uk;
memset(&post_recv, 0, sizeof(post_recv));
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->flush_issued) {
err = -EINVAL;
goto out;
}
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);
if (ret == I40IW_ERR_QP_TOOMANY_WRS_POSTED)
err = -ENOMEM;
else
err = -EINVAL;
*bad_wr = ib_wr;
goto out;
}
ib_wr = ib_wr->next;
}
out:
spin_unlock_irqrestore(&iwqp->lock, flags);
return err;
}
/**
* 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;
struct i40iw_qp *iwqp;
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);
if (ret == I40IW_ERR_QUEUE_EMPTY) {
break;
} else if (ret == I40IW_ERR_QUEUE_DESTROYED) {
continue;
} 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_WR_FLUSH_ERR;
entry->vendor_err = cq_poll_info.major_err << 16 | cq_poll_info.minor_err;
} else {
entry->status = IB_WC_SUCCESS;
}
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->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;
iwqp = (struct i40iw_qp *)qp->back_qp;
if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) {
if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring))
complete(&iwqp->sq_drained);
if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring))
complete(&iwqp->rq_drained);
}
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;
unsigned long flags;
enum i40iw_completion_notify cq_notify = IW_CQ_COMPL_EVENT;
iwcq = (struct i40iw_cq *)ibcq;
ukcq = &iwcq->sc_cq.cq_uk;
if (notify_flags == IB_CQ_SOLICITED)
cq_notify = IW_CQ_COMPL_SOLICITED;
spin_lock_irqsave(&iwcq->lock, flags);
ukcq->ops.iw_cq_request_notification(ukcq, cq_notify);
spin_unlock_irqrestore(&iwcq->lock, flags);
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;
immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
err = ib_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;
return 0;
}
static const char * const i40iw_hw_stat_names[] = {
// 32bit names
[I40IW_HW_STAT_INDEX_IP4RXDISCARD] = "ip4InDiscards",
[I40IW_HW_STAT_INDEX_IP4RXTRUNC] = "ip4InTruncatedPkts",
[I40IW_HW_STAT_INDEX_IP4TXNOROUTE] = "ip4OutNoRoutes",
[I40IW_HW_STAT_INDEX_IP6RXDISCARD] = "ip6InDiscards",
[I40IW_HW_STAT_INDEX_IP6RXTRUNC] = "ip6InTruncatedPkts",
[I40IW_HW_STAT_INDEX_IP6TXNOROUTE] = "ip6OutNoRoutes",
[I40IW_HW_STAT_INDEX_TCPRTXSEG] = "tcpRetransSegs",
[I40IW_HW_STAT_INDEX_TCPRXOPTERR] = "tcpInOptErrors",
[I40IW_HW_STAT_INDEX_TCPRXPROTOERR] = "tcpInProtoErrors",
// 64bit names
[I40IW_HW_STAT_INDEX_IP4RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4InOctets",
[I40IW_HW_STAT_INDEX_IP4RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4InPkts",
[I40IW_HW_STAT_INDEX_IP4RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4InReasmRqd",
[I40IW_HW_STAT_INDEX_IP4RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4InMcastPkts",
[I40IW_HW_STAT_INDEX_IP4TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4OutOctets",
[I40IW_HW_STAT_INDEX_IP4TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4OutPkts",
[I40IW_HW_STAT_INDEX_IP4TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4OutSegRqd",
[I40IW_HW_STAT_INDEX_IP4TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip4OutMcastPkts",
[I40IW_HW_STAT_INDEX_IP6RXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6InOctets",
[I40IW_HW_STAT_INDEX_IP6RXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6InPkts",
[I40IW_HW_STAT_INDEX_IP6RXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6InReasmRqd",
[I40IW_HW_STAT_INDEX_IP6RXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6InMcastPkts",
[I40IW_HW_STAT_INDEX_IP6TXOCTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6OutOctets",
[I40IW_HW_STAT_INDEX_IP6TXPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6OutPkts",
[I40IW_HW_STAT_INDEX_IP6TXFRAGS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6OutSegRqd",
[I40IW_HW_STAT_INDEX_IP6TXMCPKTS + I40IW_HW_STAT_INDEX_MAX_32] =
"ip6OutMcastPkts",
[I40IW_HW_STAT_INDEX_TCPRXSEGS + I40IW_HW_STAT_INDEX_MAX_32] =
"tcpInSegs",
[I40IW_HW_STAT_INDEX_TCPTXSEG + I40IW_HW_STAT_INDEX_MAX_32] =
"tcpOutSegs",
[I40IW_HW_STAT_INDEX_RDMARXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwInRdmaReads",
[I40IW_HW_STAT_INDEX_RDMARXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwInRdmaSends",
[I40IW_HW_STAT_INDEX_RDMARXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwInRdmaWrites",
[I40IW_HW_STAT_INDEX_RDMATXRDS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwOutRdmaReads",
[I40IW_HW_STAT_INDEX_RDMATXSNDS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwOutRdmaSends",
[I40IW_HW_STAT_INDEX_RDMATXWRS + I40IW_HW_STAT_INDEX_MAX_32] =
"iwOutRdmaWrites",
[I40IW_HW_STAT_INDEX_RDMAVBND + I40IW_HW_STAT_INDEX_MAX_32] =
"iwRdmaBnd",
[I40IW_HW_STAT_INDEX_RDMAVINV + I40IW_HW_STAT_INDEX_MAX_32] =
"iwRdmaInv"
};
static void i40iw_get_dev_fw_str(struct ib_device *dev, char *str)
{
u32 firmware_version = I40IW_FW_VERSION;
snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u", firmware_version,
(firmware_version & 0x000000ff));
}
/**
* i40iw_alloc_hw_stats - Allocate a hw stats structure
* @ibdev: device pointer from stack
* @port_num: port number
*/
static struct rdma_hw_stats *i40iw_alloc_hw_stats(struct ib_device *ibdev,
u8 port_num)
{
struct i40iw_device *iwdev = to_iwdev(ibdev);
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
int num_counters = I40IW_HW_STAT_INDEX_MAX_32 +
I40IW_HW_STAT_INDEX_MAX_64;
unsigned long lifespan = RDMA_HW_STATS_DEFAULT_LIFESPAN;
BUILD_BUG_ON(ARRAY_SIZE(i40iw_hw_stat_names) !=
(I40IW_HW_STAT_INDEX_MAX_32 +
I40IW_HW_STAT_INDEX_MAX_64));
/*
* PFs get the default update lifespan, but VFs only update once
* per second
*/
if (!dev->is_pf)
lifespan = 1000;
return rdma_alloc_hw_stats_struct(i40iw_hw_stat_names, num_counters,
lifespan);
}
/**
* i40iw_get_hw_stats - Populates the rdma_hw_stats structure
* @ibdev: device pointer from stack
* @stats: stats pointer from stack
* @port_num: port number
* @index: which hw counter the stack is requesting we update
*/
static int i40iw_get_hw_stats(struct ib_device *ibdev,
struct rdma_hw_stats *stats,
u8 port_num, int index)
{
struct i40iw_device *iwdev = to_iwdev(ibdev);
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_vsi_pestat *devstat = iwdev->vsi.pestat;
struct i40iw_dev_hw_stats *hw_stats = &devstat->hw_stats;
if (dev->is_pf) {
i40iw_hw_stats_read_all(devstat, &devstat->hw_stats);
} else {
if (i40iw_vchnl_vf_get_pe_stats(dev, &devstat->hw_stats))
return -ENOSYS;
}
memcpy(&stats->value[0], hw_stats, sizeof(*hw_stats));
return stats->num_counters;
}
/**
* 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_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_get_vector_affinity - report IRQ affinity mask
* @ibdev: IB device
* @comp_vector: completion vector index
*/
static const struct cpumask *i40iw_get_vector_affinity(struct ib_device *ibdev,
int comp_vector)
{
struct i40iw_device *iwdev = to_iwdev(ibdev);
struct i40iw_msix_vector *msix_vec;
if (iwdev->msix_shared)
msix_vec = &iwdev->iw_msixtbl[comp_vector];
else
msix_vec = &iwdev->iw_msixtbl[comp_vector + 1];
return irq_get_affinity_mask(msix_vec->irq);
}
/**
* 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 = iwdev->ceqs_count;
iwibdev->ibdev.dev.parent = &pcidev->dev;
iwibdev->ibdev.query_port = i40iw_query_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.alloc_hw_stats = i40iw_alloc_hw_stats;
iwibdev->ibdev.get_hw_stats = i40iw_get_hw_stats;
iwibdev->ibdev.query_device = i40iw_query_device;
iwibdev->ibdev.drain_sq = i40iw_drain_sq;
iwibdev->ibdev.drain_rq = i40iw_drain_rq;
iwibdev->ibdev.alloc_mr = i40iw_alloc_mr;
iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg;
iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
if (!iwibdev->ibdev.iwcm) {
ib_dealloc_device(&iwibdev->ibdev);
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;
memcpy(iwibdev->ibdev.iwcm->ifname, netdev->name,
sizeof(iwibdev->ibdev.iwcm->ifname));
iwibdev->ibdev.get_port_immutable = i40iw_port_immutable;
iwibdev->ibdev.get_dev_fw_str = i40iw_get_dev_fw_str;
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;
iwibdev->ibdev.get_vector_affinity = i40iw_get_vector_affinity;
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;
wait_event_timeout(iwibdev->iwdev->close_wq,
!atomic64_read(&iwibdev->iwdev->use_count),
I40IW_EVENT_TIMEOUT);
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 -ENOMEM;
iwibdev = iwdev->iwibdev;
iwibdev->ibdev.driver_id = RDMA_DRIVER_I40IW;
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 ret;
}
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