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linux/drivers/infiniband/hw/hns/hns_roce_qp.c
oulijun 391bd5fc7d RDMA/hns: Not support qp transition from reset to reset for hip06 
Because hip06 hardware is not support for qp transition from
reset to reset state, it need to return errno when qp
transited from reset to reset. This patch fixes it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-09 10:45:18 -04:00

1082 lines
29 KiB
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/*
* Copyright (c) 2016 Hisilicon Limited.
* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/platform_device.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_umem.h>
#include "hns_roce_common.h"
#include "hns_roce_device.h"
#include "hns_roce_hem.h"
#include <rdma/hns-abi.h>
#define SQP_NUM (2 * HNS_ROCE_MAX_PORTS)
void hns_roce_qp_event(struct hns_roce_dev *hr_dev, u32 qpn, int event_type)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
struct device *dev = hr_dev->dev;
struct hns_roce_qp *qp;
spin_lock(&qp_table->lock);
qp = __hns_roce_qp_lookup(hr_dev, qpn);
if (qp)
atomic_inc(&qp->refcount);
spin_unlock(&qp_table->lock);
if (!qp) {
dev_warn(dev, "Async event for bogus QP %08x\n", qpn);
return;
}
qp->event(qp, (enum hns_roce_event)event_type);
if (atomic_dec_and_test(&qp->refcount))
complete(&qp->free);
}
EXPORT_SYMBOL_GPL(hns_roce_qp_event);
static void hns_roce_ib_qp_event(struct hns_roce_qp *hr_qp,
enum hns_roce_event type)
{
struct ib_event event;
struct ib_qp *ibqp = &hr_qp->ibqp;
if (ibqp->event_handler) {
event.device = ibqp->device;
event.element.qp = ibqp;
switch (type) {
case HNS_ROCE_EVENT_TYPE_PATH_MIG:
event.event = IB_EVENT_PATH_MIG;
break;
case HNS_ROCE_EVENT_TYPE_COMM_EST:
event.event = IB_EVENT_COMM_EST;
break;
case HNS_ROCE_EVENT_TYPE_SQ_DRAINED:
event.event = IB_EVENT_SQ_DRAINED;
break;
case HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH:
event.event = IB_EVENT_QP_LAST_WQE_REACHED;
break;
case HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR:
event.event = IB_EVENT_QP_FATAL;
break;
case HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED:
event.event = IB_EVENT_PATH_MIG_ERR;
break;
case HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR:
event.event = IB_EVENT_QP_REQ_ERR;
break;
case HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR:
event.event = IB_EVENT_QP_ACCESS_ERR;
break;
default:
dev_dbg(ibqp->device->dev.parent, "roce_ib: Unexpected event type %d on QP %06lx\n",
type, hr_qp->qpn);
return;
}
ibqp->event_handler(&event, ibqp->qp_context);
}
}
static int hns_roce_reserve_range_qp(struct hns_roce_dev *hr_dev, int cnt,
int align, unsigned long *base)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
return hns_roce_bitmap_alloc_range(&qp_table->bitmap, cnt, align, base);
}
enum hns_roce_qp_state to_hns_roce_state(enum ib_qp_state state)
{
switch (state) {
case IB_QPS_RESET:
return HNS_ROCE_QP_STATE_RST;
case IB_QPS_INIT:
return HNS_ROCE_QP_STATE_INIT;
case IB_QPS_RTR:
return HNS_ROCE_QP_STATE_RTR;
case IB_QPS_RTS:
return HNS_ROCE_QP_STATE_RTS;
case IB_QPS_SQD:
return HNS_ROCE_QP_STATE_SQD;
case IB_QPS_ERR:
return HNS_ROCE_QP_STATE_ERR;
default:
return HNS_ROCE_QP_NUM_STATE;
}
}
EXPORT_SYMBOL_GPL(to_hns_roce_state);
static int hns_roce_gsi_qp_alloc(struct hns_roce_dev *hr_dev, unsigned long qpn,
struct hns_roce_qp *hr_qp)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
int ret;
if (!qpn)
return -EINVAL;
hr_qp->qpn = qpn;
spin_lock_irq(&qp_table->lock);
ret = radix_tree_insert(&hr_dev->qp_table_tree,
hr_qp->qpn & (hr_dev->caps.num_qps - 1), hr_qp);
spin_unlock_irq(&qp_table->lock);
if (ret) {
dev_err(hr_dev->dev, "QPC radix_tree_insert failed\n");
goto err_put_irrl;
}
atomic_set(&hr_qp->refcount, 1);
init_completion(&hr_qp->free);
return 0;
err_put_irrl:
return ret;
}
static int hns_roce_qp_alloc(struct hns_roce_dev *hr_dev, unsigned long qpn,
struct hns_roce_qp *hr_qp)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
struct device *dev = hr_dev->dev;
int ret;
if (!qpn)
return -EINVAL;
hr_qp->qpn = qpn;
/* Alloc memory for QPC */
ret = hns_roce_table_get(hr_dev, &qp_table->qp_table, hr_qp->qpn);
if (ret) {
dev_err(dev, "QPC table get failed\n");
goto err_out;
}
/* Alloc memory for IRRL */
ret = hns_roce_table_get(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
if (ret) {
dev_err(dev, "IRRL table get failed\n");
goto err_put_qp;
}
if (hr_dev->caps.trrl_entry_sz) {
/* Alloc memory for TRRL */
ret = hns_roce_table_get(hr_dev, &qp_table->trrl_table,
hr_qp->qpn);
if (ret) {
dev_err(dev, "TRRL table get failed\n");
goto err_put_irrl;
}
}
spin_lock_irq(&qp_table->lock);
ret = radix_tree_insert(&hr_dev->qp_table_tree,
hr_qp->qpn & (hr_dev->caps.num_qps - 1), hr_qp);
spin_unlock_irq(&qp_table->lock);
if (ret) {
dev_err(dev, "QPC radix_tree_insert failed\n");
goto err_put_trrl;
}
atomic_set(&hr_qp->refcount, 1);
init_completion(&hr_qp->free);
return 0;
err_put_trrl:
if (hr_dev->caps.trrl_entry_sz)
hns_roce_table_put(hr_dev, &qp_table->trrl_table, hr_qp->qpn);
err_put_irrl:
hns_roce_table_put(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
err_put_qp:
hns_roce_table_put(hr_dev, &qp_table->qp_table, hr_qp->qpn);
err_out:
return ret;
}
void hns_roce_qp_remove(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
unsigned long flags;
spin_lock_irqsave(&qp_table->lock, flags);
radix_tree_delete(&hr_dev->qp_table_tree,
hr_qp->qpn & (hr_dev->caps.num_qps - 1));
spin_unlock_irqrestore(&qp_table->lock, flags);
}
EXPORT_SYMBOL_GPL(hns_roce_qp_remove);
void hns_roce_qp_free(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
if (atomic_dec_and_test(&hr_qp->refcount))
complete(&hr_qp->free);
wait_for_completion(&hr_qp->free);
if ((hr_qp->ibqp.qp_type) != IB_QPT_GSI) {
if (hr_dev->caps.trrl_entry_sz)
hns_roce_table_put(hr_dev, &qp_table->trrl_table,
hr_qp->qpn);
hns_roce_table_put(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
hns_roce_table_put(hr_dev, &qp_table->qp_table, hr_qp->qpn);
}
}
EXPORT_SYMBOL_GPL(hns_roce_qp_free);
void hns_roce_release_range_qp(struct hns_roce_dev *hr_dev, int base_qpn,
int cnt)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
if (base_qpn < SQP_NUM)
return;
hns_roce_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt, BITMAP_RR);
}
EXPORT_SYMBOL_GPL(hns_roce_release_range_qp);
static int hns_roce_set_rq_size(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap, int is_user, int has_srq,
struct hns_roce_qp *hr_qp)
{
struct device *dev = hr_dev->dev;
u32 max_cnt;
/* Check the validity of QP support capacity */
if (cap->max_recv_wr > hr_dev->caps.max_wqes ||
cap->max_recv_sge > hr_dev->caps.max_rq_sg) {
dev_err(dev, "RQ WR or sge error!max_recv_wr=%d max_recv_sge=%d\n",
cap->max_recv_wr, cap->max_recv_sge);
return -EINVAL;
}
/* If srq exit, set zero for relative number of rq */
if (has_srq) {
if (cap->max_recv_wr) {
dev_dbg(dev, "srq no need config max_recv_wr\n");
return -EINVAL;
}
hr_qp->rq.wqe_cnt = hr_qp->rq.max_gs = 0;
} else {
if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) {
dev_err(dev, "user space no need config max_recv_wr max_recv_sge\n");
return -EINVAL;
}
if (hr_dev->caps.min_wqes)
max_cnt = max(cap->max_recv_wr, hr_dev->caps.min_wqes);
else
max_cnt = cap->max_recv_wr;
hr_qp->rq.wqe_cnt = roundup_pow_of_two(max_cnt);
if ((u32)hr_qp->rq.wqe_cnt > hr_dev->caps.max_wqes) {
dev_err(dev, "while setting rq size, rq.wqe_cnt too large\n");
return -EINVAL;
}
max_cnt = max(1U, cap->max_recv_sge);
hr_qp->rq.max_gs = roundup_pow_of_two(max_cnt);
if (hr_dev->caps.max_rq_sg <= 2)
hr_qp->rq.wqe_shift =
ilog2(hr_dev->caps.max_rq_desc_sz);
else
hr_qp->rq.wqe_shift =
ilog2(hr_dev->caps.max_rq_desc_sz
* hr_qp->rq.max_gs);
}
cap->max_recv_wr = hr_qp->rq.max_post = hr_qp->rq.wqe_cnt;
cap->max_recv_sge = hr_qp->rq.max_gs;
return 0;
}
static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap,
struct hns_roce_qp *hr_qp,
struct hns_roce_ib_create_qp *ucmd)
{
u32 roundup_sq_stride = roundup_pow_of_two(hr_dev->caps.max_sq_desc_sz);
u8 max_sq_stride = ilog2(roundup_sq_stride);
u32 page_size;
u32 max_cnt;
/* Sanity check SQ size before proceeding */
if ((u32)(1 << ucmd->log_sq_bb_count) > hr_dev->caps.max_wqes ||
ucmd->log_sq_stride > max_sq_stride ||
ucmd->log_sq_stride < HNS_ROCE_IB_MIN_SQ_STRIDE) {
dev_err(hr_dev->dev, "check SQ size error!\n");
return -EINVAL;
}
if (cap->max_send_sge > hr_dev->caps.max_sq_sg) {
dev_err(hr_dev->dev, "SQ sge error! max_send_sge=%d\n",
cap->max_send_sge);
return -EINVAL;
}
hr_qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count;
hr_qp->sq.wqe_shift = ucmd->log_sq_stride;
max_cnt = max(1U, cap->max_send_sge);
if (hr_dev->caps.max_sq_sg <= 2)
hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
else
hr_qp->sq.max_gs = max_cnt;
if (hr_qp->sq.max_gs > 2)
hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
(hr_qp->sq.max_gs - 2));
hr_qp->sge.sge_shift = 4;
/* Get buf size, SQ and RQ are aligned to page_szie */
if (hr_dev->caps.max_sq_sg <= 2) {
hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
hr_qp->rq.wqe_shift), PAGE_SIZE) +
HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
hr_qp->sq.wqe_shift), PAGE_SIZE);
hr_qp->sq.offset = 0;
hr_qp->rq.offset = HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
hr_qp->sq.wqe_shift), PAGE_SIZE);
} else {
page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
hr_qp->rq.wqe_shift), page_size) +
HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
hr_qp->sge.sge_shift), page_size) +
HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
hr_qp->sq.wqe_shift), page_size);
hr_qp->sq.offset = 0;
if (hr_qp->sge.sge_cnt) {
hr_qp->sge.offset = HNS_ROCE_ALOGN_UP(
(hr_qp->sq.wqe_cnt <<
hr_qp->sq.wqe_shift),
page_size);
hr_qp->rq.offset = hr_qp->sge.offset +
HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
hr_qp->sge.sge_shift),
page_size);
} else {
hr_qp->rq.offset = HNS_ROCE_ALOGN_UP(
(hr_qp->sq.wqe_cnt <<
hr_qp->sq.wqe_shift),
page_size);
}
}
return 0;
}
static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap,
struct hns_roce_qp *hr_qp)
{
struct device *dev = hr_dev->dev;
u32 page_size;
u32 max_cnt;
int size;
if (cap->max_send_wr > hr_dev->caps.max_wqes ||
cap->max_send_sge > hr_dev->caps.max_sq_sg ||
cap->max_inline_data > hr_dev->caps.max_sq_inline) {
dev_err(dev, "SQ WR or sge or inline data error!\n");
return -EINVAL;
}
hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
hr_qp->sq_max_wqes_per_wr = 1;
hr_qp->sq_spare_wqes = 0;
if (hr_dev->caps.min_wqes)
max_cnt = max(cap->max_send_wr, hr_dev->caps.min_wqes);
else
max_cnt = cap->max_send_wr;
hr_qp->sq.wqe_cnt = roundup_pow_of_two(max_cnt);
if ((u32)hr_qp->sq.wqe_cnt > hr_dev->caps.max_wqes) {
dev_err(dev, "while setting kernel sq size, sq.wqe_cnt too large\n");
return -EINVAL;
}
/* Get data_seg numbers */
max_cnt = max(1U, cap->max_send_sge);
if (hr_dev->caps.max_sq_sg <= 2)
hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
else
hr_qp->sq.max_gs = max_cnt;
if (hr_qp->sq.max_gs > 2) {
hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
(hr_qp->sq.max_gs - 2));
hr_qp->sge.sge_shift = 4;
}
/* ud sqwqe's sge use extend sge */
if (hr_dev->caps.max_sq_sg > 2 && hr_qp->ibqp.qp_type == IB_QPT_GSI) {
hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
hr_qp->sq.max_gs);
hr_qp->sge.sge_shift = 4;
}
/* Get buf size, SQ and RQ are aligned to PAGE_SIZE */
page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
hr_qp->sq.offset = 0;
size = HNS_ROCE_ALOGN_UP(hr_qp->sq.wqe_cnt << hr_qp->sq.wqe_shift,
page_size);
if (hr_dev->caps.max_sq_sg > 2 && hr_qp->sge.sge_cnt) {
hr_qp->sge.offset = size;
size += HNS_ROCE_ALOGN_UP(hr_qp->sge.sge_cnt <<
hr_qp->sge.sge_shift, page_size);
}
hr_qp->rq.offset = size;
size += HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt << hr_qp->rq.wqe_shift),
page_size);
hr_qp->buff_size = size;
/* Get wr and sge number which send */
cap->max_send_wr = hr_qp->sq.max_post = hr_qp->sq.wqe_cnt;
cap->max_send_sge = hr_qp->sq.max_gs;
/* We don't support inline sends for kernel QPs (yet) */
cap->max_inline_data = 0;
return 0;
}
static int hns_roce_qp_has_rq(struct ib_qp_init_attr *attr)
{
if (attr->qp_type == IB_QPT_XRC_INI ||
attr->qp_type == IB_QPT_XRC_TGT || attr->srq)
return 0;
return 1;
}
static int hns_roce_create_qp_common(struct hns_roce_dev *hr_dev,
struct ib_pd *ib_pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, unsigned long sqpn,
struct hns_roce_qp *hr_qp)
{
struct device *dev = hr_dev->dev;
struct hns_roce_ib_create_qp ucmd;
struct hns_roce_ib_create_qp_resp resp = {};
unsigned long qpn = 0;
int ret = 0;
u32 page_shift;
u32 npages;
int i;
mutex_init(&hr_qp->mutex);
spin_lock_init(&hr_qp->sq.lock);
spin_lock_init(&hr_qp->rq.lock);
hr_qp->state = IB_QPS_RESET;
hr_qp->ibqp.qp_type = init_attr->qp_type;
if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_ALL_WR);
else
hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_REQ_WR);
ret = hns_roce_set_rq_size(hr_dev, &init_attr->cap, !!ib_pd->uobject,
!!init_attr->srq, hr_qp);
if (ret) {
dev_err(dev, "hns_roce_set_rq_size failed\n");
goto err_out;
}
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE) {
/* allocate recv inline buf */
hr_qp->rq_inl_buf.wqe_list = kcalloc(hr_qp->rq.wqe_cnt,
sizeof(struct hns_roce_rinl_wqe),
GFP_KERNEL);
if (!hr_qp->rq_inl_buf.wqe_list) {
ret = -ENOMEM;
goto err_out;
}
hr_qp->rq_inl_buf.wqe_cnt = hr_qp->rq.wqe_cnt;
/* Firstly, allocate a list of sge space buffer */
hr_qp->rq_inl_buf.wqe_list[0].sg_list =
kcalloc(hr_qp->rq_inl_buf.wqe_cnt,
init_attr->cap.max_recv_sge *
sizeof(struct hns_roce_rinl_sge),
GFP_KERNEL);
if (!hr_qp->rq_inl_buf.wqe_list[0].sg_list) {
ret = -ENOMEM;
goto err_wqe_list;
}
for (i = 1; i < hr_qp->rq_inl_buf.wqe_cnt; i++)
/* Secondly, reallocate the buffer */
hr_qp->rq_inl_buf.wqe_list[i].sg_list =
&hr_qp->rq_inl_buf.wqe_list[0].sg_list[i *
init_attr->cap.max_recv_sge];
}
if (ib_pd->uobject) {
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
dev_err(dev, "ib_copy_from_udata error for create qp\n");
ret = -EFAULT;
goto err_rq_sge_list;
}
ret = hns_roce_set_user_sq_size(hr_dev, &init_attr->cap, hr_qp,
&ucmd);
if (ret) {
dev_err(dev, "hns_roce_set_user_sq_size error for create qp\n");
goto err_rq_sge_list;
}
hr_qp->umem = ib_umem_get(ib_pd->uobject->context,
ucmd.buf_addr, hr_qp->buff_size, 0,
0);
if (IS_ERR(hr_qp->umem)) {
dev_err(dev, "ib_umem_get error for create qp\n");
ret = PTR_ERR(hr_qp->umem);
goto err_rq_sge_list;
}
hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
if (hr_dev->caps.mtt_buf_pg_sz) {
npages = (ib_umem_page_count(hr_qp->umem) +
(1 << hr_dev->caps.mtt_buf_pg_sz) - 1) /
(1 << hr_dev->caps.mtt_buf_pg_sz);
page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
ret = hns_roce_mtt_init(hr_dev, npages,
page_shift,
&hr_qp->mtt);
} else {
ret = hns_roce_mtt_init(hr_dev,
ib_umem_page_count(hr_qp->umem),
hr_qp->umem->page_shift,
&hr_qp->mtt);
}
if (ret) {
dev_err(dev, "hns_roce_mtt_init error for create qp\n");
goto err_buf;
}
ret = hns_roce_ib_umem_write_mtt(hr_dev, &hr_qp->mtt,
hr_qp->umem);
if (ret) {
dev_err(dev, "hns_roce_ib_umem_write_mtt error for create qp\n");
goto err_mtt;
}
if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
(udata->outlen >= sizeof(resp)) &&
hns_roce_qp_has_rq(init_attr)) {
ret = hns_roce_db_map_user(
to_hr_ucontext(ib_pd->uobject->context),
ucmd.db_addr, &hr_qp->rdb);
if (ret) {
dev_err(dev, "rq record doorbell map failed!\n");
goto err_mtt;
}
}
} else {
if (init_attr->create_flags &
IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
dev_err(dev, "init_attr->create_flags error!\n");
ret = -EINVAL;
goto err_rq_sge_list;
}
if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) {
dev_err(dev, "init_attr->create_flags error!\n");
ret = -EINVAL;
goto err_rq_sge_list;
}
/* Set SQ size */
ret = hns_roce_set_kernel_sq_size(hr_dev, &init_attr->cap,
hr_qp);
if (ret) {
dev_err(dev, "hns_roce_set_kernel_sq_size error!\n");
goto err_rq_sge_list;
}
/* QP doorbell register address */
hr_qp->sq.db_reg_l = hr_dev->reg_base + hr_dev->sdb_offset +
DB_REG_OFFSET * hr_dev->priv_uar.index;
hr_qp->rq.db_reg_l = hr_dev->reg_base + hr_dev->odb_offset +
DB_REG_OFFSET * hr_dev->priv_uar.index;
if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
hns_roce_qp_has_rq(init_attr)) {
ret = hns_roce_alloc_db(hr_dev, &hr_qp->rdb, 0);
if (ret) {
dev_err(dev, "rq record doorbell alloc failed!\n");
goto err_rq_sge_list;
}
*hr_qp->rdb.db_record = 0;
hr_qp->rdb_en = 1;
}
/* Allocate QP buf */
page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
if (hns_roce_buf_alloc(hr_dev, hr_qp->buff_size,
(1 << page_shift) * 2,
&hr_qp->hr_buf, page_shift)) {
dev_err(dev, "hns_roce_buf_alloc error!\n");
ret = -ENOMEM;
goto err_db;
}
hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
/* Write MTT */
ret = hns_roce_mtt_init(hr_dev, hr_qp->hr_buf.npages,
hr_qp->hr_buf.page_shift, &hr_qp->mtt);
if (ret) {
dev_err(dev, "hns_roce_mtt_init error for kernel create qp\n");
goto err_buf;
}
ret = hns_roce_buf_write_mtt(hr_dev, &hr_qp->mtt,
&hr_qp->hr_buf);
if (ret) {
dev_err(dev, "hns_roce_buf_write_mtt error for kernel create qp\n");
goto err_mtt;
}
hr_qp->sq.wrid = kmalloc_array(hr_qp->sq.wqe_cnt, sizeof(u64),
GFP_KERNEL);
hr_qp->rq.wrid = kmalloc_array(hr_qp->rq.wqe_cnt, sizeof(u64),
GFP_KERNEL);
if (!hr_qp->sq.wrid || !hr_qp->rq.wrid) {
ret = -ENOMEM;
goto err_wrid;
}
}
if (sqpn) {
qpn = sqpn;
} else {
/* Get QPN */
ret = hns_roce_reserve_range_qp(hr_dev, 1, 1, &qpn);
if (ret) {
dev_err(dev, "hns_roce_reserve_range_qp alloc qpn error\n");
goto err_wrid;
}
}
if (init_attr->qp_type == IB_QPT_GSI &&
hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
/* In v1 engine, GSI QP context in RoCE engine's register */
ret = hns_roce_gsi_qp_alloc(hr_dev, qpn, hr_qp);
if (ret) {
dev_err(dev, "hns_roce_qp_alloc failed!\n");
goto err_qpn;
}
} else {
ret = hns_roce_qp_alloc(hr_dev, qpn, hr_qp);
if (ret) {
dev_err(dev, "hns_roce_qp_alloc failed!\n");
goto err_qpn;
}
}
if (sqpn)
hr_qp->doorbell_qpn = 1;
else
hr_qp->doorbell_qpn = cpu_to_le64(hr_qp->qpn);
if (ib_pd->uobject && (udata->outlen >= sizeof(resp)) &&
(hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)) {
/* indicate kernel supports record db */
resp.cap_flags |= HNS_ROCE_SUPPORT_RQ_RECORD_DB;
ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
if (ret)
goto err_qp;
hr_qp->rdb_en = 1;
}
hr_qp->event = hns_roce_ib_qp_event;
return 0;
err_qp:
if (init_attr->qp_type == IB_QPT_GSI &&
hr_dev->hw_rev == HNS_ROCE_HW_VER1)
hns_roce_qp_remove(hr_dev, hr_qp);
else
hns_roce_qp_free(hr_dev, hr_qp);
err_qpn:
if (!sqpn)
hns_roce_release_range_qp(hr_dev, qpn, 1);
err_wrid:
if (ib_pd->uobject) {
if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
(udata->outlen >= sizeof(resp)) &&
hns_roce_qp_has_rq(init_attr))
hns_roce_db_unmap_user(
to_hr_ucontext(ib_pd->uobject->context),
&hr_qp->rdb);
} else {
kfree(hr_qp->sq.wrid);
kfree(hr_qp->rq.wrid);
}
err_mtt:
hns_roce_mtt_cleanup(hr_dev, &hr_qp->mtt);
err_buf:
if (ib_pd->uobject)
ib_umem_release(hr_qp->umem);
else
hns_roce_buf_free(hr_dev, hr_qp->buff_size, &hr_qp->hr_buf);
err_db:
if (!ib_pd->uobject && hns_roce_qp_has_rq(init_attr) &&
(hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB))
hns_roce_free_db(hr_dev, &hr_qp->rdb);
err_rq_sge_list:
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
kfree(hr_qp->rq_inl_buf.wqe_list[0].sg_list);
err_wqe_list:
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
kfree(hr_qp->rq_inl_buf.wqe_list);
err_out:
return ret;
}
struct ib_qp *hns_roce_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata)
{
struct hns_roce_dev *hr_dev = to_hr_dev(pd->device);
struct device *dev = hr_dev->dev;
struct hns_roce_sqp *hr_sqp;
struct hns_roce_qp *hr_qp;
int ret;
switch (init_attr->qp_type) {
case IB_QPT_RC: {
hr_qp = kzalloc(sizeof(*hr_qp), GFP_KERNEL);
if (!hr_qp)
return ERR_PTR(-ENOMEM);
ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata, 0,
hr_qp);
if (ret) {
dev_err(dev, "Create RC QP failed\n");
kfree(hr_qp);
return ERR_PTR(ret);
}
hr_qp->ibqp.qp_num = hr_qp->qpn;
break;
}
case IB_QPT_GSI: {
/* Userspace is not allowed to create special QPs: */
if (pd->uobject) {
dev_err(dev, "not support usr space GSI\n");
return ERR_PTR(-EINVAL);
}
hr_sqp = kzalloc(sizeof(*hr_sqp), GFP_KERNEL);
if (!hr_sqp)
return ERR_PTR(-ENOMEM);
hr_qp = &hr_sqp->hr_qp;
hr_qp->port = init_attr->port_num - 1;
hr_qp->phy_port = hr_dev->iboe.phy_port[hr_qp->port];
/* when hw version is v1, the sqpn is allocated */
if (hr_dev->caps.max_sq_sg <= 2)
hr_qp->ibqp.qp_num = HNS_ROCE_MAX_PORTS +
hr_dev->iboe.phy_port[hr_qp->port];
else
hr_qp->ibqp.qp_num = 1;
ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata,
hr_qp->ibqp.qp_num, hr_qp);
if (ret) {
dev_err(dev, "Create GSI QP failed!\n");
kfree(hr_sqp);
return ERR_PTR(ret);
}
break;
}
default:{
dev_err(dev, "not support QP type %d\n", init_attr->qp_type);
return ERR_PTR(-EINVAL);
}
}
return &hr_qp->ibqp;
}
EXPORT_SYMBOL_GPL(hns_roce_create_qp);
int to_hr_qp_type(int qp_type)
{
int transport_type;
if (qp_type == IB_QPT_RC)
transport_type = SERV_TYPE_RC;
else if (qp_type == IB_QPT_UC)
transport_type = SERV_TYPE_UC;
else if (qp_type == IB_QPT_UD)
transport_type = SERV_TYPE_UD;
else if (qp_type == IB_QPT_GSI)
transport_type = SERV_TYPE_UD;
else
transport_type = -1;
return transport_type;
}
EXPORT_SYMBOL_GPL(to_hr_qp_type);
int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_udata *udata)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
enum ib_qp_state cur_state, new_state;
struct device *dev = hr_dev->dev;
int ret = -EINVAL;
int p;
enum ib_mtu active_mtu;
mutex_lock(&hr_qp->mutex);
cur_state = attr_mask & IB_QP_CUR_STATE ?
attr->cur_qp_state : (enum ib_qp_state)hr_qp->state;
new_state = attr_mask & IB_QP_STATE ?
attr->qp_state : cur_state;
if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask,
IB_LINK_LAYER_ETHERNET)) {
dev_err(dev, "ib_modify_qp_is_ok failed\n");
goto out;
}
if ((attr_mask & IB_QP_PORT) &&
(attr->port_num == 0 || attr->port_num > hr_dev->caps.num_ports)) {
dev_err(dev, "attr port_num invalid.attr->port_num=%d\n",
attr->port_num);
goto out;
}
if (attr_mask & IB_QP_PKEY_INDEX) {
p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
if (attr->pkey_index >= hr_dev->caps.pkey_table_len[p]) {
dev_err(dev, "attr pkey_index invalid.attr->pkey_index=%d\n",
attr->pkey_index);
goto out;
}
}
if (attr_mask & IB_QP_PATH_MTU) {
p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
active_mtu = iboe_get_mtu(hr_dev->iboe.netdevs[p]->mtu);
if ((hr_dev->caps.max_mtu == IB_MTU_4096 &&
attr->path_mtu > IB_MTU_4096) ||
(hr_dev->caps.max_mtu == IB_MTU_2048 &&
attr->path_mtu > IB_MTU_2048) ||
attr->path_mtu < IB_MTU_256 ||
attr->path_mtu > active_mtu) {
dev_err(dev, "attr path_mtu(%d)invalid while modify qp",
attr->path_mtu);
goto out;
}
}
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
attr->max_rd_atomic > hr_dev->caps.max_qp_init_rdma) {
dev_err(dev, "attr max_rd_atomic invalid.attr->max_rd_atomic=%d\n",
attr->max_rd_atomic);
goto out;
}
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
attr->max_dest_rd_atomic > hr_dev->caps.max_qp_dest_rdma) {
dev_err(dev, "attr max_dest_rd_atomic invalid.attr->max_dest_rd_atomic=%d\n",
attr->max_dest_rd_atomic);
goto out;
}
if (cur_state == new_state && cur_state == IB_QPS_RESET) {
if (hr_dev->caps.min_wqes) {
ret = -EPERM;
dev_err(dev, "cur_state=%d new_state=%d\n", cur_state,
new_state);
} else {
ret = 0;
}
goto out;
}
ret = hr_dev->hw->modify_qp(ibqp, attr, attr_mask, cur_state,
new_state);
out:
mutex_unlock(&hr_qp->mutex);
return ret;
}
void hns_roce_lock_cqs(struct hns_roce_cq *send_cq, struct hns_roce_cq *recv_cq)
__acquires(&send_cq->lock) __acquires(&recv_cq->lock)
{
if (send_cq == recv_cq) {
spin_lock_irq(&send_cq->lock);
__acquire(&recv_cq->lock);
} else if (send_cq->cqn < recv_cq->cqn) {
spin_lock_irq(&send_cq->lock);
spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
} else {
spin_lock_irq(&recv_cq->lock);
spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
}
}
EXPORT_SYMBOL_GPL(hns_roce_lock_cqs);
void hns_roce_unlock_cqs(struct hns_roce_cq *send_cq,
struct hns_roce_cq *recv_cq) __releases(&send_cq->lock)
__releases(&recv_cq->lock)
{
if (send_cq == recv_cq) {
__release(&recv_cq->lock);
spin_unlock_irq(&send_cq->lock);
} else if (send_cq->cqn < recv_cq->cqn) {
spin_unlock(&recv_cq->lock);
spin_unlock_irq(&send_cq->lock);
} else {
spin_unlock(&send_cq->lock);
spin_unlock_irq(&recv_cq->lock);
}
}
EXPORT_SYMBOL_GPL(hns_roce_unlock_cqs);
static void *get_wqe(struct hns_roce_qp *hr_qp, int offset)
{
return hns_roce_buf_offset(&hr_qp->hr_buf, offset);
}
void *get_recv_wqe(struct hns_roce_qp *hr_qp, int n)
{
return get_wqe(hr_qp, hr_qp->rq.offset + (n << hr_qp->rq.wqe_shift));
}
EXPORT_SYMBOL_GPL(get_recv_wqe);
void *get_send_wqe(struct hns_roce_qp *hr_qp, int n)
{
return get_wqe(hr_qp, hr_qp->sq.offset + (n << hr_qp->sq.wqe_shift));
}
EXPORT_SYMBOL_GPL(get_send_wqe);
void *get_send_extend_sge(struct hns_roce_qp *hr_qp, int n)
{
return hns_roce_buf_offset(&hr_qp->hr_buf, hr_qp->sge.offset +
(n << hr_qp->sge.sge_shift));
}
EXPORT_SYMBOL_GPL(get_send_extend_sge);
bool hns_roce_wq_overflow(struct hns_roce_wq *hr_wq, int nreq,
struct ib_cq *ib_cq)
{
struct hns_roce_cq *hr_cq;
u32 cur;
cur = hr_wq->head - hr_wq->tail;
if (likely(cur + nreq < hr_wq->max_post))
return false;
hr_cq = to_hr_cq(ib_cq);
spin_lock(&hr_cq->lock);
cur = hr_wq->head - hr_wq->tail;
spin_unlock(&hr_cq->lock);
return cur + nreq >= hr_wq->max_post;
}
EXPORT_SYMBOL_GPL(hns_roce_wq_overflow);
int hns_roce_init_qp_table(struct hns_roce_dev *hr_dev)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
int reserved_from_top = 0;
int ret;
spin_lock_init(&qp_table->lock);
INIT_RADIX_TREE(&hr_dev->qp_table_tree, GFP_ATOMIC);
/* A port include two SQP, six port total 12 */
ret = hns_roce_bitmap_init(&qp_table->bitmap, hr_dev->caps.num_qps,
hr_dev->caps.num_qps - 1, SQP_NUM,
reserved_from_top);
if (ret) {
dev_err(hr_dev->dev, "qp bitmap init failed!error=%d\n",
ret);
return ret;
}
return 0;
}
void hns_roce_cleanup_qp_table(struct hns_roce_dev *hr_dev)
{
hns_roce_bitmap_cleanup(&hr_dev->qp_table.bitmap);
}
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