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sys/dev/ixl/iwarp/iw_ixl_verbs.c

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/*******************************************************************************
*
* Copyright (c) 2015-2017 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.
*
*******************************************************************************/
/*$FreeBSD$*/
#include <rdma/ib_user_verbs.h>
#include <rdma/iw_cm.h>
#include <rdma/ib_umem.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <dev/pci/pcivar.h>
#include "iw_ixl.h"
#include "iw_ixl_linux_wait.h"
#if __FreeBSD_version < 1100000
#include "iw_ixl_linux_jiffies.h"
#endif /* IW_IXL_FREEBSD10 */
/**
* i40iw_query_device - get device attributes
* @ibdev: device pointer from stack
* @props: returning device attributes
*/
static int
i40iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
{
struct i40iw_device *iwdev = to_iwdev(ibdev);
memset(props, 0, sizeof(*props));
ether_addr_copy((u8 *)&props->sys_image_guid, IF_LLADDR(iwdev->ifp));
props->fw_ver = I40IW_FW_VERSION;
props->device_cap_flags = iwdev->device_cap_flags;
props->vendor_id = pci_get_vendor(iwdev->ldev->dev);
props->vendor_part_id = pci_get_device(iwdev->ldev->dev);
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_WQ_ENTRIES >> 2) - 1;
props->max_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 ifnet *ifp = iwdev->ifp;
memset(props, 0, sizeof(*props));
props->max_mtu = IB_MTU_4096;
if (ifp->if_mtu >= 4096)
props->active_mtu = IB_MTU_4096;
else if (ifp->if_mtu >= 2048)
props->active_mtu = IB_MTU_2048;
else if (ifp->if_mtu >= 1024)
props->active_mtu = IB_MTU_1024;
else if (ifp->if_mtu >= 512)
props->active_mtu = IB_MTU_512;
else
props->active_mtu = IB_MTU_256;
props->lid = 1;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
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_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 =
iwdev->vsi.qos[0].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
device_printf(iwdev->ldev->dev, "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 =
iwdev->vsi.qos[0].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
device_printf(iwdev->ldev->dev, "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;
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) {
device_printf(iwdev->ldev->dev, "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)
{
struct i40iw_pbl *iwpbl = &iwqp->iwpbl;
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);
ixliw_free_dma_mem(&iwqp->q2_ctx_mem);
ixliw_free_dma_mem(&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;
struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
u32 size;
u32 sqdepth, rqdepth;
u32 sq_size, rq_size;
u8 sqshift;
enum i40iw_status_code status;
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,
ukinfo->max_inline_data, &sqshift);
if (status)
return -ENOMEM;
sqdepth = sq_size << sqshift;
rqdepth = rq_size << I40IW_MAX_RQ_WQE_SHIFT;
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_device *iwdev = to_iwdev(ibpd->device);
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_qp_host_ctx_info *ctx_info;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_qp_init_info init_info;
struct i40iwarp_offload_info *iwarp_info;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_pd *iwpd = to_iwpd(ibpd);
struct i40iw_qp *iwqp;
struct i40iw_sc_qp *qp;
struct i40iw_create_qp_info *qp_info;
struct i40iw_create_qp_req req;
struct i40iw_ucontext *ucontext;
struct i40iw_create_qp_resp uresp;
void *mem;
int err_code;
int sq_size;
int rq_size;
unsigned long flags;
u32 qp_num = 0;
enum i40iw_status_code ret;
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;
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)) {
device_printf(iwdev->ldev->dev, "dma_mem alloc 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 = (u64 *)((uintptr_t)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) {
device_printf(iwdev->ldev->dev, "qp resource alloc failed\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;
init_info.qp_uk_init_info.first_sq_wq = 1;
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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS | I40IW_DEBUG_QP,
"ib_copy_from_data error %d\n", err_code);
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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_PBLE, "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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_QP, "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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_QP, "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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_CQP, "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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_QP, "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_attr->cap.max_send_wr--;
init_attr->cap.max_recv_wr--;
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_access_flags = 0;
attr->cap.max_send_wr = qp->qp_uk.sq_size - 1;
attr->cap.max_recv_wr = qp->qp_uk.rq_size - 1;
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;
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)
{
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_modify_qp_info *m_info;
enum i40iw_status_code status;
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_debug(&iwdev->sc_dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_QP | I40IW_DEBUG_CQP, "CQP-OP Modify QP fail");
}
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;
unsigned long flags;
u32 err;
u8 issue_modify_qp = 0;
u8 dont_wait = 0;
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)
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_debug(&iwdev->sc_dev, I40IW_DEBUG_VERBS | I40IW_DEBUG_QP,
"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);
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)
ixliw_free_dma_mem(&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)
{
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
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_debug(&iwdev->sc_dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_CQ | I40IW_DEBUG_CQP, "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) {
DPRINTF("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
* @entries: # of cq entries in cq
* @comp_vector: not used
* @context: user context created during alloc
* @udata: user data
*/
static struct ib_cq *
i40iw_create_cq(struct ib_device *ibdev,
#if __FreeBSD_version >= 1100000
struct ib_cq_init_attr *attr,
#else
int entries, int comp_vector,
#endif /* IW_IXL_FREEBSD11 */
struct ib_ucontext *context, struct ib_udata *udata)
{
struct i40iw_device *iwdev = to_iwdev(ibdev);
struct i40iw_cq *iwcq;
struct i40iw_pbl *iwpbl;
struct i40iw_sc_cq *cq;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_cq_init_info info;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_cq_uk_init_info *ukinfo = &info.cq_uk_init_info;
int err_code;
#if __FreeBSD_version >= 1100000
int entries = attr->cqe;
int comp_vector = attr->comp_vector;
#endif /* IW_IXL_FREEBSD11 */
unsigned long flags;
u32 cq_num = 0;
enum i40iw_status_code status;
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 (comp_vector < iwdev->ceqs_count)
info.ceq_id = 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)))
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 = (u64 *)((uintptr_t)iwcq->kmem.va + rsize);
}
if (dev->iw_priv_cq_ops->cq_init(cq, &info)) {
i40iw_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_CQ, "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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_QP | I40IW_DEBUG_CQP,
"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_debug(dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_CQ, "copy_to_udata failed\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)
{
int ret;
u32 stag = 0;
u32 stag_index = 0;
u32 next_stag_index;
u32 driver_key;
u32 random;
u8 consumer_key;
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_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_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_pd *iwpd = to_iwpd(iwmr->ibmr.pd);
int err = 0;
enum i40iw_status_code status;
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_debug(&iwdev->sc_dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_CQP, "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_fast_reg_mr(struct ib_pd *pd,
int max_page_list_len)
{
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;
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;
}
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_FMEM;
palloc = &iwpbl->pble_alloc;
iwmr->page_cnt = max_page_list_len;
err_code = i40iw_hw_alloc_stag(iwdev, iwmr);
if (err_code)
goto err1;
iwpbl->pbl_allocated = FALSE;
i40iw_add_pdusecount(iwpd);
return &iwmr->ibmr;
err1:
i40iw_free_stag(iwdev, stag);
err:
kfree(iwmr);
return ERR_PTR(err_code);
}
static struct ib_fast_reg_page_list *
i40iw_alloc_fast_reg_page_list(struct ib_device *device, int page_list_len)
{
struct i40iw_fast_reg_page_list *i40iw_fpl;
struct ib_fast_reg_page_list *ibfpl;
struct i40iw_device *iwdev = to_iwdev(device);
struct i40iw_pble_alloc *palloc;
enum i40iw_status_code status;
i40iw_fpl = kzalloc(sizeof(*i40iw_fpl), GFP_KERNEL);
if (!i40iw_fpl)
return ERR_PTR(-ENOMEM);
ibfpl = &i40iw_fpl->ibfpl;
ibfpl->max_page_list_len = page_list_len;
palloc = &i40iw_fpl->palloc;
mutex_lock(&iwdev->pbl_mutex);
status = i40iw_get_pble(&iwdev->sc_dev, iwdev->pble_rsrc, palloc,
page_list_len);
mutex_unlock(&iwdev->pbl_mutex);
if (status) {
kfree(i40iw_fpl);
return ERR_PTR(-ENOMEM);
}
if (palloc->level != I40IW_LEVEL_1) {
i40iw_free_pble(iwdev->pble_rsrc, palloc);
kfree(i40iw_fpl);
return ERR_PTR(-ENOMEM);
}
ibfpl->page_list = (u64 *)palloc->level1.addr;
i40iw_fpl->iwdev = iwdev;
return &i40iw_fpl->ibfpl;
}
static void
i40iw_free_fast_reg_page_list(struct ib_fast_reg_page_list *ibfpl)
{
struct i40iw_fast_reg_page_list *i40iw_fpl = to_i40iw_fr_page_list(ibfpl);
struct i40iw_pble_alloc *palloc;
struct i40iw_device *iwdev;
palloc = &i40iw_fpl->palloc;
iwdev = i40iw_fpl->iwdev;
i40iw_free_pble(iwdev->pble_rsrc, palloc);
kfree(i40iw_fpl);
}
/**
* 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;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
int err = 0;
enum i40iw_status_code status;
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_debug(&iwdev->sc_dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_MR | I40IW_DEBUG_CQP, "CQP-OP MR Reg fail");
}
return err;
}
/**
* i40iw_reg_phys_mr - register kernel physical memory
* @pd: ibpd pointer
* @phys_buf: array of buffer descriptors defining memory to register
* @num_phys_buf: number of buffer descriptors in the array
* @acc: Access rights
* @iova_start: start of virtual address for physical buffers
*/
struct ib_mr *
i40iw_reg_phys_mr(struct ib_pd *pd, struct ib_phys_buf *phys_buf,
int num_phys_buf, 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;
int ret;
u32 stag;
u16 access = I40IW_ACCESS_FLAGS_LOCALREAD;
enum i40iw_status_code status;
if (num_phys_buf > 1)
return ERR_PTR(-ENOTSUP);
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] = phys_buf->addr;
iwmr->length = phys_buf->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)
{
struct ib_phys_buf phys_buf;
u64 kva = 0;
phys_buf.addr = 0;
phys_buf.size = 0;
return i40iw_reg_phys_mr(pd, &phys_buf, 1, 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);
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;
enum i40iw_status_code status;
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(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_debug(&iwdev->sc_dev, I40IW_DEBUG_ERR | I40IW_DEBUG_VERBS |
I40IW_DEBUG_CQP | I40IW_DEBUG_MR,
"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 && iwmr->type != IW_MEMREG_TYPE_QP)
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, 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;
int err = 0;
unsigned long flags;
bool inv_stag;
enum i40iw_status_code ret;
iwqp = (struct i40iw_qp *)ibqp;
ukqp = &iwqp->sc_qp.qp_uk;
spin_lock_irqsave(&iwqp->lock, flags);
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;
info.stag_to_inv = ib_wr->ex.invalidate_rkey;
}
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, 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, 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 =
ib_wr->wr.rdma.remote_addr;
info.op.inline_rdma_write.rem_addr.stag = ib_wr->wr.rdma.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 =
ib_wr->wr.rdma.remote_addr;
info.op.rdma_write.rem_addr.stag = ib_wr->wr.rdma.rkey;
info.op.rdma_write.rem_addr.len = ib_wr->sg_list->length;
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 = ib_wr->wr.rdma.remote_addr;
info.op.rdma_read.rem_addr.stag = ib_wr->wr.rdma.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, 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_FAST_REG_MR:
{
struct i40iw_fast_reg_page_list *i40iw_fpl =
to_i40iw_fr_page_list(ib_wr->wr.fast_reg.page_list);
struct i40iw_pble_alloc *palloc = &i40iw_fpl->palloc;
struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
struct i40iw_fast_reg_stag_info info;
int i;
int flags = ib_wr->wr.fast_reg.access_flags;
int page_shift = ib_wr->wr.fast_reg.page_shift;
memset(&info, 0, sizeof(info));
info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;
info.access_rights |= i40iw_get_user_access(flags);
info.stag_key = ib_wr->wr.fast_reg.rkey & 0xff;
info.stag_idx = ib_wr->wr.fast_reg.rkey >> 8;
if (page_shift == 21)
info.page_size = 0x200000; /* 2M page */
else
info.page_size = 0x1000; /* 4K page */
info.wr_id = ib_wr->wr_id;
info.addr_type = I40IW_ADDR_TYPE_VA_BASED;
info.va = (void *)ib_wr->wr.fast_reg.iova_start;
info.total_len = ib_wr->wr.fast_reg.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;
info.chunk_size = 1;
ret = dev->iw_priv_qp_ops->iw_mr_fast_register(&iwqp->sc_qp,
&info, TRUE);
if (ret)
err = -ENOMEM;
for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
ib_wr->wr.fast_reg.page_list->page_list[i] = cpu_to_le64((u64)
ib_wr->wr.fast_reg.page_list->page_list[i]);
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];
int err = 0;
unsigned long flags;
enum i40iw_status_code ret = 0;
if (!ib_wr->sg_list && ib_wr->num_sge > 0) {
i40iw_pr_err(" post_recv err, sg_list NULL, num_sge larger than 0\n");
err = -EDOM;
*bad_wr = ib_wr;
return err;
}
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);
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;
struct i40iw_cq_poll_info cq_poll_info;
struct i40iw_cq_uk *ukcq;
struct i40iw_sc_qp *qp;
int cqe_count = 0;
unsigned long flags;
enum i40iw_status_code ret;
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;
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_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, IF_LLADDR(iwdev->ifp));
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 -ENOSYS;
}
/**
* 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;
iwibdev = (struct i40iw_ib_device *)ib_alloc_device(sizeof(*iwibdev));
if (!iwibdev) {
device_printf(iwdev->ldev->dev, "iwdev == NULL\n");
return NULL;
}
strlcpy(iwibdev->ibdev.name, "ixliw%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, IF_LLADDR(iwdev->ifp));
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 = (device_t)iwdev->ldev->dev->class;
iwibdev->ibdev.dev.parent = iwdev->ldev->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_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_phys_mr = i40iw_reg_phys_mr;
iwibdev->ibdev.dereg_mr = i40iw_dereg_mr;
iwibdev->ibdev.query_device = i40iw_query_device;
iwibdev->ibdev.create_ah = i40iw_create_ah;
iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
iwibdev->ibdev.alloc_fast_reg_mr = i40iw_alloc_fast_reg_mr;
iwibdev->ibdev.alloc_fast_reg_page_list = i40iw_alloc_fast_reg_page_list;
iwibdev->ibdev.free_fast_reg_page_list = i40iw_free_fast_reg_page_list;
iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL);
if (!iwibdev->ibdev.iwcm) {
ib_dealloc_device(&iwibdev->ibdev);
device_printf(iwdev->ldev->dev, "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;
#if __FreeBSD_version >= 1100000
iwibdev->ibdev.iwcm->create_listen_ep = i40iw_create_listen;
iwibdev->ibdev.iwcm->destroy_listen_ep = i40iw_destroy_listen;
#else
iwibdev->ibdev.iwcm->create_listen = i40iw_create_listen;
iwibdev->ibdev.iwcm->destroy_listen = i40iw_destroy_listen;
#endif /* IW_IXL_FREEBSD11 */
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;
wait_event_timeout(iwibdev->iwdev->close_wq,
!atomic_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)
{
struct i40iw_ib_device *iwibdev;
int i, ret;
iwdev->iwibdev = i40iw_init_rdma_device(iwdev);
if (!iwdev->iwibdev)
return -ENOMEM;
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 ret;
}