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linux-zen-server/drivers/infiniband/hw/hns/hns_roce_qp.c

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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/pci.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_umem.h>
#include <rdma/uverbs_ioctl.h>
#include "hns_roce_common.h"
#include "hns_roce_device.h"
#include "hns_roce_hem.h"
static void flush_work_handle(struct work_struct *work)
{
struct hns_roce_work *flush_work = container_of(work,
struct hns_roce_work, work);
struct hns_roce_qp *hr_qp = container_of(flush_work,
struct hns_roce_qp, flush_work);
struct device *dev = flush_work->hr_dev->dev;
struct ib_qp_attr attr;
int attr_mask;
int ret;
attr_mask = IB_QP_STATE;
attr.qp_state = IB_QPS_ERR;
if (test_and_clear_bit(HNS_ROCE_FLUSH_FLAG, &hr_qp->flush_flag)) {
ret = hns_roce_modify_qp(&hr_qp->ibqp, &attr, attr_mask, NULL);
if (ret)
dev_err(dev, "modify QP to error state failed(%d) during CQE flush\n",
ret);
}
/*
* make sure we signal QP destroy leg that flush QP was completed
* so that it can safely proceed ahead now and destroy QP
*/
if (refcount_dec_and_test(&hr_qp->refcount))
complete(&hr_qp->free);
}
void init_flush_work(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
struct hns_roce_work *flush_work = &hr_qp->flush_work;
flush_work->hr_dev = hr_dev;
INIT_WORK(&flush_work->work, flush_work_handle);
refcount_inc(&hr_qp->refcount);
queue_work(hr_dev->irq_workq, &flush_work->work);
}
void flush_cqe(struct hns_roce_dev *dev, struct hns_roce_qp *qp)
{
/*
* Hip08 hardware cannot flush the WQEs in SQ/RQ if the QP state
* gets into errored mode. Hence, as a workaround to this
* hardware limitation, driver needs to assist in flushing. But
* the flushing operation uses mailbox to convey the QP state to
* the hardware and which can sleep due to the mutex protection
* around the mailbox calls. Hence, use the deferred flush for
* now.
*/
if (!test_and_set_bit(HNS_ROCE_FLUSH_FLAG, &qp->flush_flag))
init_flush_work(dev, qp);
}
void hns_roce_qp_event(struct hns_roce_dev *hr_dev, u32 qpn, int event_type)
{
struct device *dev = hr_dev->dev;
struct hns_roce_qp *qp;
xa_lock(&hr_dev->qp_table_xa);
qp = __hns_roce_qp_lookup(hr_dev, qpn);
if (qp)
refcount_inc(&qp->refcount);
xa_unlock(&hr_dev->qp_table_xa);
if (!qp) {
dev_warn(dev, "async event for bogus QP %08x\n", qpn);
return;
}
if (event_type == HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR ||
event_type == HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR ||
event_type == HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR ||
event_type == HNS_ROCE_EVENT_TYPE_XRCD_VIOLATION ||
event_type == HNS_ROCE_EVENT_TYPE_INVALID_XRCETH) {
qp->state = IB_QPS_ERR;
flush_cqe(hr_dev, qp);
}
qp->event(qp, (enum hns_roce_event)event_type);
if (refcount_dec_and_test(&qp->refcount))
complete(&qp->free);
}
static void hns_roce_ib_qp_event(struct hns_roce_qp *hr_qp,
enum hns_roce_event type)
{
struct ib_qp *ibqp = &hr_qp->ibqp;
struct ib_event event;
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:
case HNS_ROCE_EVENT_TYPE_XRCD_VIOLATION:
case HNS_ROCE_EVENT_TYPE_INVALID_XRCETH:
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 u8 get_least_load_bankid_for_qp(struct hns_roce_bank *bank)
{
u32 least_load = bank[0].inuse;
u8 bankid = 0;
u32 bankcnt;
u8 i;
for (i = 1; i < HNS_ROCE_QP_BANK_NUM; i++) {
bankcnt = bank[i].inuse;
if (bankcnt < least_load) {
least_load = bankcnt;
bankid = i;
}
}
return bankid;
}
static int alloc_qpn_with_bankid(struct hns_roce_bank *bank, u8 bankid,
unsigned long *qpn)
{
int id;
id = ida_alloc_range(&bank->ida, bank->next, bank->max, GFP_KERNEL);
if (id < 0) {
id = ida_alloc_range(&bank->ida, bank->min, bank->max,
GFP_KERNEL);
if (id < 0)
return id;
}
/* the QPN should keep increasing until the max value is reached. */
bank->next = (id + 1) > bank->max ? bank->min : id + 1;
/* the lower 3 bits is bankid */
*qpn = (id << 3) | bankid;
return 0;
}
static int alloc_qpn(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 num = 0;
u8 bankid;
int ret;
if (hr_qp->ibqp.qp_type == IB_QPT_GSI) {
num = 1;
} else {
mutex_lock(&qp_table->bank_mutex);
bankid = get_least_load_bankid_for_qp(qp_table->bank);
ret = alloc_qpn_with_bankid(&qp_table->bank[bankid], bankid,
&num);
if (ret) {
ibdev_err(&hr_dev->ib_dev,
"failed to alloc QPN, ret = %d\n", ret);
mutex_unlock(&qp_table->bank_mutex);
return ret;
}
qp_table->bank[bankid].inuse++;
mutex_unlock(&qp_table->bank_mutex);
}
hr_qp->qpn = num;
return 0;
}
static void add_qp_to_list(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct ib_cq *send_cq, struct ib_cq *recv_cq)
{
struct hns_roce_cq *hr_send_cq, *hr_recv_cq;
unsigned long flags;
hr_send_cq = send_cq ? to_hr_cq(send_cq) : NULL;
hr_recv_cq = recv_cq ? to_hr_cq(recv_cq) : NULL;
spin_lock_irqsave(&hr_dev->qp_list_lock, flags);
hns_roce_lock_cqs(hr_send_cq, hr_recv_cq);
list_add_tail(&hr_qp->node, &hr_dev->qp_list);
if (hr_send_cq)
list_add_tail(&hr_qp->sq_node, &hr_send_cq->sq_list);
if (hr_recv_cq)
list_add_tail(&hr_qp->rq_node, &hr_recv_cq->rq_list);
hns_roce_unlock_cqs(hr_send_cq, hr_recv_cq);
spin_unlock_irqrestore(&hr_dev->qp_list_lock, flags);
}
static int hns_roce_qp_store(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr)
{
struct xarray *xa = &hr_dev->qp_table_xa;
int ret;
if (!hr_qp->qpn)
return -EINVAL;
ret = xa_err(xa_store_irq(xa, hr_qp->qpn, hr_qp, GFP_KERNEL));
if (ret)
dev_err(hr_dev->dev, "failed to xa store for QPC\n");
else
/* add QP to device's QP list for softwc */
add_qp_to_list(hr_dev, hr_qp, init_attr->send_cq,
init_attr->recv_cq);
return ret;
}
static int alloc_qpc(struct hns_roce_dev *hr_dev, 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 (!hr_qp->qpn)
return -EINVAL;
/* Alloc memory for QPC */
ret = hns_roce_table_get(hr_dev, &qp_table->qp_table, hr_qp->qpn);
if (ret) {
dev_err(dev, "failed to get QPC table\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, "failed to get IRRL table\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, "failed to get TRRL table\n");
goto err_put_irrl;
}
}
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL) {
/* Alloc memory for SCC CTX */
ret = hns_roce_table_get(hr_dev, &qp_table->sccc_table,
hr_qp->qpn);
if (ret) {
dev_err(dev, "failed to get SCC CTX table\n");
goto err_put_trrl;
}
}
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;
}
static void qp_user_mmap_entry_remove(struct hns_roce_qp *hr_qp)
{
rdma_user_mmap_entry_remove(&hr_qp->dwqe_mmap_entry->rdma_entry);
}
void hns_roce_qp_remove(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
struct xarray *xa = &hr_dev->qp_table_xa;
unsigned long flags;
list_del(&hr_qp->node);
if (hr_qp->ibqp.qp_type != IB_QPT_XRC_TGT)
list_del(&hr_qp->sq_node);
if (hr_qp->ibqp.qp_type != IB_QPT_XRC_INI &&
hr_qp->ibqp.qp_type != IB_QPT_XRC_TGT)
list_del(&hr_qp->rq_node);
xa_lock_irqsave(xa, flags);
__xa_erase(xa, hr_qp->qpn);
xa_unlock_irqrestore(xa, flags);
}
static void free_qpc(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
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);
}
static inline u8 get_qp_bankid(unsigned long qpn)
{
/* The lower 3 bits of QPN are used to hash to different banks */
return (u8)(qpn & GENMASK(2, 0));
}
static void free_qpn(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
u8 bankid;
if (hr_qp->ibqp.qp_type == IB_QPT_GSI)
return;
if (hr_qp->qpn < hr_dev->caps.reserved_qps)
return;
bankid = get_qp_bankid(hr_qp->qpn);
ida_free(&hr_dev->qp_table.bank[bankid].ida, hr_qp->qpn >> 3);
mutex_lock(&hr_dev->qp_table.bank_mutex);
hr_dev->qp_table.bank[bankid].inuse--;
mutex_unlock(&hr_dev->qp_table.bank_mutex);
}
static u32 proc_rq_sge(struct hns_roce_dev *dev, struct hns_roce_qp *hr_qp,
bool user)
{
u32 max_sge = dev->caps.max_rq_sg;
if (dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
return max_sge;
/* Reserve SGEs only for HIP08 in kernel; The userspace driver will
* calculate number of max_sge with reserved SGEs when allocating wqe
* buf, so there is no need to do this again in kernel. But the number
* may exceed the capacity of SGEs recorded in the firmware, so the
* kernel driver should just adapt the value accordingly.
*/
if (user)
max_sge = roundup_pow_of_two(max_sge + 1);
else
hr_qp->rq.rsv_sge = 1;
return max_sge;
}
static int set_rq_size(struct hns_roce_dev *hr_dev, struct ib_qp_cap *cap,
struct hns_roce_qp *hr_qp, int has_rq, bool user)
{
u32 max_sge = proc_rq_sge(hr_dev, hr_qp, user);
u32 cnt;
/* If srq exist, set zero for relative number of rq */
if (!has_rq) {
hr_qp->rq.wqe_cnt = 0;
hr_qp->rq.max_gs = 0;
cap->max_recv_wr = 0;
cap->max_recv_sge = 0;
return 0;
}
/* Check the validity of QP support capacity */
if (!cap->max_recv_wr || cap->max_recv_wr > hr_dev->caps.max_wqes ||
cap->max_recv_sge > max_sge) {
ibdev_err(&hr_dev->ib_dev,
"RQ config error, depth = %u, sge = %u\n",
cap->max_recv_wr, cap->max_recv_sge);
return -EINVAL;
}
cnt = roundup_pow_of_two(max(cap->max_recv_wr, hr_dev->caps.min_wqes));
if (cnt > hr_dev->caps.max_wqes) {
ibdev_err(&hr_dev->ib_dev, "rq depth %u too large\n",
cap->max_recv_wr);
return -EINVAL;
}
hr_qp->rq.max_gs = roundup_pow_of_two(max(1U, cap->max_recv_sge) +
hr_qp->rq.rsv_sge);
hr_qp->rq.wqe_shift = ilog2(hr_dev->caps.max_rq_desc_sz *
hr_qp->rq.max_gs);
hr_qp->rq.wqe_cnt = cnt;
cap->max_recv_wr = cnt;
cap->max_recv_sge = hr_qp->rq.max_gs - hr_qp->rq.rsv_sge;
return 0;
}
static u32 get_max_inline_data(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap)
{
if (cap->max_inline_data) {
cap->max_inline_data = roundup_pow_of_two(cap->max_inline_data);
return min(cap->max_inline_data,
hr_dev->caps.max_sq_inline);
}
return 0;
}
static void update_inline_data(struct hns_roce_qp *hr_qp,
struct ib_qp_cap *cap)
{
u32 sge_num = hr_qp->sq.ext_sge_cnt;
if (hr_qp->config & HNS_ROCE_EXSGE_FLAGS) {
if (!(hr_qp->ibqp.qp_type == IB_QPT_GSI ||
hr_qp->ibqp.qp_type == IB_QPT_UD))
sge_num = max((u32)HNS_ROCE_SGE_IN_WQE, sge_num);
cap->max_inline_data = max(cap->max_inline_data,
sge_num * HNS_ROCE_SGE_SIZE);
}
hr_qp->max_inline_data = cap->max_inline_data;
}
static u32 get_sge_num_from_max_send_sge(bool is_ud_or_gsi,
u32 max_send_sge)
{
unsigned int std_sge_num;
unsigned int min_sge;
std_sge_num = is_ud_or_gsi ? 0 : HNS_ROCE_SGE_IN_WQE;
min_sge = is_ud_or_gsi ? 1 : 0;
return max_send_sge > std_sge_num ? (max_send_sge - std_sge_num) :
min_sge;
}
static unsigned int get_sge_num_from_max_inl_data(bool is_ud_or_gsi,
u32 max_inline_data)
{
unsigned int inline_sge;
inline_sge = roundup_pow_of_two(max_inline_data) / HNS_ROCE_SGE_SIZE;
/*
* if max_inline_data less than
* HNS_ROCE_SGE_IN_WQE * HNS_ROCE_SGE_SIZE,
* In addition to ud's mode, no need to extend sge.
*/
if (!is_ud_or_gsi && inline_sge <= HNS_ROCE_SGE_IN_WQE)
inline_sge = 0;
return inline_sge;
}
static void set_ext_sge_param(struct hns_roce_dev *hr_dev, u32 sq_wqe_cnt,
struct hns_roce_qp *hr_qp, struct ib_qp_cap *cap)
{
bool is_ud_or_gsi = (hr_qp->ibqp.qp_type == IB_QPT_GSI ||
hr_qp->ibqp.qp_type == IB_QPT_UD);
unsigned int std_sge_num;
u32 inline_ext_sge = 0;
u32 ext_wqe_sge_cnt;
u32 total_sge_cnt;
cap->max_inline_data = get_max_inline_data(hr_dev, cap);
hr_qp->sge.sge_shift = HNS_ROCE_SGE_SHIFT;
std_sge_num = is_ud_or_gsi ? 0 : HNS_ROCE_SGE_IN_WQE;
ext_wqe_sge_cnt = get_sge_num_from_max_send_sge(is_ud_or_gsi,
cap->max_send_sge);
if (hr_qp->config & HNS_ROCE_EXSGE_FLAGS) {
inline_ext_sge = max(ext_wqe_sge_cnt,
get_sge_num_from_max_inl_data(is_ud_or_gsi,
cap->max_inline_data));
hr_qp->sq.ext_sge_cnt = inline_ext_sge ?
roundup_pow_of_two(inline_ext_sge) : 0;
hr_qp->sq.max_gs = max(1U, (hr_qp->sq.ext_sge_cnt + std_sge_num));
hr_qp->sq.max_gs = min(hr_qp->sq.max_gs, hr_dev->caps.max_sq_sg);
ext_wqe_sge_cnt = hr_qp->sq.ext_sge_cnt;
} else {
hr_qp->sq.max_gs = max(1U, cap->max_send_sge);
hr_qp->sq.max_gs = min(hr_qp->sq.max_gs, hr_dev->caps.max_sq_sg);
hr_qp->sq.ext_sge_cnt = hr_qp->sq.max_gs;
}
/* If the number of extended sge is not zero, they MUST use the
* space of HNS_HW_PAGE_SIZE at least.
*/
if (ext_wqe_sge_cnt) {
total_sge_cnt = roundup_pow_of_two(sq_wqe_cnt * ext_wqe_sge_cnt);
hr_qp->sge.sge_cnt = max(total_sge_cnt,
(u32)HNS_HW_PAGE_SIZE / HNS_ROCE_SGE_SIZE);
}
update_inline_data(hr_qp, cap);
}
static int check_sq_size_with_integrity(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap,
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);
/* Sanity check SQ size before proceeding */
if (ucmd->log_sq_stride > max_sq_stride ||
ucmd->log_sq_stride < HNS_ROCE_IB_MIN_SQ_STRIDE) {
ibdev_err(&hr_dev->ib_dev, "failed to check SQ stride size.\n");
return -EINVAL;
}
if (cap->max_send_sge > hr_dev->caps.max_sq_sg) {
ibdev_err(&hr_dev->ib_dev, "failed to check SQ SGE size %u.\n",
cap->max_send_sge);
return -EINVAL;
}
return 0;
}
static int 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)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
u32 cnt = 0;
int ret;
if (check_shl_overflow(1, ucmd->log_sq_bb_count, &cnt) ||
cnt > hr_dev->caps.max_wqes)
return -EINVAL;
ret = check_sq_size_with_integrity(hr_dev, cap, ucmd);
if (ret) {
ibdev_err(ibdev, "failed to check user SQ size, ret = %d.\n",
ret);
return ret;
}
set_ext_sge_param(hr_dev, cnt, hr_qp, cap);
hr_qp->sq.wqe_shift = ucmd->log_sq_stride;
hr_qp->sq.wqe_cnt = cnt;
cap->max_send_sge = hr_qp->sq.max_gs;
return 0;
}
static int set_wqe_buf_attr(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct hns_roce_buf_attr *buf_attr)
{
int buf_size;
int idx = 0;
hr_qp->buff_size = 0;
/* SQ WQE */
hr_qp->sq.offset = 0;
buf_size = to_hr_hem_entries_size(hr_qp->sq.wqe_cnt,
hr_qp->sq.wqe_shift);
if (buf_size > 0 && idx < ARRAY_SIZE(buf_attr->region)) {
buf_attr->region[idx].size = buf_size;
buf_attr->region[idx].hopnum = hr_dev->caps.wqe_sq_hop_num;
idx++;
hr_qp->buff_size += buf_size;
}
/* extend SGE WQE in SQ */
hr_qp->sge.offset = hr_qp->buff_size;
buf_size = to_hr_hem_entries_size(hr_qp->sge.sge_cnt,
hr_qp->sge.sge_shift);
if (buf_size > 0 && idx < ARRAY_SIZE(buf_attr->region)) {
buf_attr->region[idx].size = buf_size;
buf_attr->region[idx].hopnum = hr_dev->caps.wqe_sge_hop_num;
idx++;
hr_qp->buff_size += buf_size;
}
/* RQ WQE */
hr_qp->rq.offset = hr_qp->buff_size;
buf_size = to_hr_hem_entries_size(hr_qp->rq.wqe_cnt,
hr_qp->rq.wqe_shift);
if (buf_size > 0 && idx < ARRAY_SIZE(buf_attr->region)) {
buf_attr->region[idx].size = buf_size;
buf_attr->region[idx].hopnum = hr_dev->caps.wqe_rq_hop_num;
idx++;
hr_qp->buff_size += buf_size;
}
if (hr_qp->buff_size < 1)
return -EINVAL;
buf_attr->page_shift = HNS_HW_PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
buf_attr->region_count = idx;
return 0;
}
static int set_kernel_sq_size(struct hns_roce_dev *hr_dev,
struct ib_qp_cap *cap, struct hns_roce_qp *hr_qp)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
u32 cnt;
if (!cap->max_send_wr || cap->max_send_wr > hr_dev->caps.max_wqes ||
cap->max_send_sge > hr_dev->caps.max_sq_sg) {
ibdev_err(ibdev, "failed to check SQ WR or SGE num.\n");
return -EINVAL;
}
cnt = roundup_pow_of_two(max(cap->max_send_wr, hr_dev->caps.min_wqes));
if (cnt > hr_dev->caps.max_wqes) {
ibdev_err(ibdev, "failed to check WQE num, WQE num = %u.\n",
cnt);
return -EINVAL;
}
hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
hr_qp->sq.wqe_cnt = cnt;
set_ext_sge_param(hr_dev, cnt, hr_qp, cap);
/* sync the parameters of kernel QP to user's configuration */
cap->max_send_wr = cnt;
cap->max_send_sge = hr_qp->sq.max_gs;
return 0;
}
static int hns_roce_qp_has_sq(struct ib_qp_init_attr *attr)
{
if (attr->qp_type == IB_QPT_XRC_TGT || !attr->cap.max_send_wr)
return 0;
return 1;
}
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 ||
!attr->cap.max_recv_wr)
return 0;
return 1;
}
static int alloc_qp_buf(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, unsigned long addr)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
struct hns_roce_buf_attr buf_attr = {};
int ret;
ret = set_wqe_buf_attr(hr_dev, hr_qp, &buf_attr);
if (ret) {
ibdev_err(ibdev, "failed to split WQE buf, ret = %d.\n", ret);
goto err_inline;
}
ret = hns_roce_mtr_create(hr_dev, &hr_qp->mtr, &buf_attr,
PAGE_SHIFT + hr_dev->caps.mtt_ba_pg_sz,
udata, addr);
if (ret) {
ibdev_err(ibdev, "failed to create WQE mtr, ret = %d.\n", ret);
goto err_inline;
}
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_DIRECT_WQE)
hr_qp->en_flags |= HNS_ROCE_QP_CAP_DIRECT_WQE;
return 0;
err_inline:
return ret;
}
static void free_qp_buf(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
{
hns_roce_mtr_destroy(hr_dev, &hr_qp->mtr);
}
static inline bool user_qp_has_sdb(struct hns_roce_dev *hr_dev,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata,
struct hns_roce_ib_create_qp_resp *resp,
struct hns_roce_ib_create_qp *ucmd)
{
return ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) &&
udata->outlen >= offsetofend(typeof(*resp), cap_flags) &&
hns_roce_qp_has_sq(init_attr) &&
udata->inlen >= offsetofend(typeof(*ucmd), sdb_addr));
}
static inline bool user_qp_has_rdb(struct hns_roce_dev *hr_dev,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata,
struct hns_roce_ib_create_qp_resp *resp)
{
return ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) &&
udata->outlen >= offsetofend(typeof(*resp), cap_flags) &&
hns_roce_qp_has_rq(init_attr));
}
static inline bool kernel_qp_has_rdb(struct hns_roce_dev *hr_dev,
struct ib_qp_init_attr *init_attr)
{
return ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_RECORD_DB) &&
hns_roce_qp_has_rq(init_attr));
}
static int qp_mmap_entry(struct hns_roce_qp *hr_qp,
struct hns_roce_dev *hr_dev,
struct ib_udata *udata,
struct hns_roce_ib_create_qp_resp *resp)
{
struct hns_roce_ucontext *uctx =
rdma_udata_to_drv_context(udata,
struct hns_roce_ucontext, ibucontext);
struct rdma_user_mmap_entry *rdma_entry;
u64 address;
address = hr_dev->dwqe_page + hr_qp->qpn * HNS_ROCE_DWQE_SIZE;
hr_qp->dwqe_mmap_entry =
hns_roce_user_mmap_entry_insert(&uctx->ibucontext, address,
HNS_ROCE_DWQE_SIZE,
HNS_ROCE_MMAP_TYPE_DWQE);
if (!hr_qp->dwqe_mmap_entry) {
ibdev_err(&hr_dev->ib_dev, "failed to get dwqe mmap entry.\n");
return -ENOMEM;
}
rdma_entry = &hr_qp->dwqe_mmap_entry->rdma_entry;
resp->dwqe_mmap_key = rdma_user_mmap_get_offset(rdma_entry);
return 0;
}
static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata,
struct hns_roce_ib_create_qp *ucmd,
struct hns_roce_ib_create_qp_resp *resp)
{
struct hns_roce_ucontext *uctx = rdma_udata_to_drv_context(udata,
struct hns_roce_ucontext, ibucontext);
struct ib_device *ibdev = &hr_dev->ib_dev;
int ret;
if (user_qp_has_sdb(hr_dev, init_attr, udata, resp, ucmd)) {
ret = hns_roce_db_map_user(uctx, ucmd->sdb_addr, &hr_qp->sdb);
if (ret) {
ibdev_err(ibdev,
"failed to map user SQ doorbell, ret = %d.\n",
ret);
goto err_out;
}
hr_qp->en_flags |= HNS_ROCE_QP_CAP_SQ_RECORD_DB;
}
if (user_qp_has_rdb(hr_dev, init_attr, udata, resp)) {
ret = hns_roce_db_map_user(uctx, ucmd->db_addr, &hr_qp->rdb);
if (ret) {
ibdev_err(ibdev,
"failed to map user RQ doorbell, ret = %d.\n",
ret);
goto err_sdb;
}
hr_qp->en_flags |= HNS_ROCE_QP_CAP_RQ_RECORD_DB;
}
return 0;
err_sdb:
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB)
hns_roce_db_unmap_user(uctx, &hr_qp->sdb);
err_out:
return ret;
}
static int alloc_kernel_qp_db(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
int ret;
if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
hr_qp->sq.db_reg = hr_dev->mem_base +
HNS_ROCE_DWQE_SIZE * hr_qp->qpn;
else
hr_qp->sq.db_reg = hr_dev->reg_base + hr_dev->sdb_offset +
DB_REG_OFFSET * hr_dev->priv_uar.index;
hr_qp->rq.db_reg = hr_dev->reg_base + hr_dev->odb_offset +
DB_REG_OFFSET * hr_dev->priv_uar.index;
if (kernel_qp_has_rdb(hr_dev, init_attr)) {
ret = hns_roce_alloc_db(hr_dev, &hr_qp->rdb, 0);
if (ret) {
ibdev_err(ibdev,
"failed to alloc kernel RQ doorbell, ret = %d.\n",
ret);
return ret;
}
*hr_qp->rdb.db_record = 0;
hr_qp->en_flags |= HNS_ROCE_QP_CAP_RQ_RECORD_DB;
}
return 0;
}
static int alloc_qp_db(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata,
struct hns_roce_ib_create_qp *ucmd,
struct hns_roce_ib_create_qp_resp *resp)
{
int ret;
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SDI_MODE)
hr_qp->en_flags |= HNS_ROCE_QP_CAP_OWNER_DB;
if (udata) {
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE) {
ret = qp_mmap_entry(hr_qp, hr_dev, udata, resp);
if (ret)
return ret;
}
ret = alloc_user_qp_db(hr_dev, hr_qp, init_attr, udata, ucmd,
resp);
if (ret)
goto err_remove_qp;
} else {
ret = alloc_kernel_qp_db(hr_dev, hr_qp, init_attr);
if (ret)
return ret;
}
return 0;
err_remove_qp:
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE)
qp_user_mmap_entry_remove(hr_qp);
return ret;
}
static void free_qp_db(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp,
struct ib_udata *udata)
{
struct hns_roce_ucontext *uctx = rdma_udata_to_drv_context(
udata, struct hns_roce_ucontext, ibucontext);
if (udata) {
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)
hns_roce_db_unmap_user(uctx, &hr_qp->rdb);
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB)
hns_roce_db_unmap_user(uctx, &hr_qp->sdb);
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE)
qp_user_mmap_entry_remove(hr_qp);
} else {
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)
hns_roce_free_db(hr_dev, &hr_qp->rdb);
}
}
static int alloc_kernel_wrid(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
u64 *sq_wrid = NULL;
u64 *rq_wrid = NULL;
int ret;
sq_wrid = kcalloc(hr_qp->sq.wqe_cnt, sizeof(u64), GFP_KERNEL);
if (ZERO_OR_NULL_PTR(sq_wrid)) {
ibdev_err(ibdev, "failed to alloc SQ wrid.\n");
return -ENOMEM;
}
if (hr_qp->rq.wqe_cnt) {
rq_wrid = kcalloc(hr_qp->rq.wqe_cnt, sizeof(u64), GFP_KERNEL);
if (ZERO_OR_NULL_PTR(rq_wrid)) {
ibdev_err(ibdev, "failed to alloc RQ wrid.\n");
ret = -ENOMEM;
goto err_sq;
}
}
hr_qp->sq.wrid = sq_wrid;
hr_qp->rq.wrid = rq_wrid;
return 0;
err_sq:
kfree(sq_wrid);
return ret;
}
static void free_kernel_wrid(struct hns_roce_qp *hr_qp)
{
kfree(hr_qp->rq.wrid);
kfree(hr_qp->sq.wrid);
}
static int set_qp_param(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata,
struct hns_roce_ib_create_qp *ucmd)
{
struct ib_device *ibdev = &hr_dev->ib_dev;
struct hns_roce_ucontext *uctx;
int ret;
if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
hr_qp->sq_signal_bits = IB_SIGNAL_ALL_WR;
else
hr_qp->sq_signal_bits = IB_SIGNAL_REQ_WR;
ret = set_rq_size(hr_dev, &init_attr->cap, hr_qp,
hns_roce_qp_has_rq(init_attr), !!udata);
if (ret) {
ibdev_err(ibdev, "failed to set user RQ size, ret = %d.\n",
ret);
return ret;
}
if (udata) {
ret = ib_copy_from_udata(ucmd, udata,
min(udata->inlen, sizeof(*ucmd)));
if (ret) {
ibdev_err(ibdev,
"failed to copy QP ucmd, ret = %d\n", ret);
return ret;
}
uctx = rdma_udata_to_drv_context(udata, struct hns_roce_ucontext,
ibucontext);
hr_qp->config = uctx->config;
ret = set_user_sq_size(hr_dev, &init_attr->cap, hr_qp, ucmd);
if (ret)
ibdev_err(ibdev,
"failed to set user SQ size, ret = %d.\n",
ret);
} else {
if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
hr_qp->config = HNS_ROCE_EXSGE_FLAGS;
ret = set_kernel_sq_size(hr_dev, &init_attr->cap, hr_qp);
if (ret)
ibdev_err(ibdev,
"failed to set kernel SQ size, ret = %d.\n",
ret);
}
return ret;
}
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,
struct hns_roce_qp *hr_qp)
{
struct hns_roce_ib_create_qp_resp resp = {};
struct ib_device *ibdev = &hr_dev->ib_dev;
struct hns_roce_ib_create_qp ucmd;
int ret;
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->flush_flag = 0;
if (init_attr->create_flags)
return -EOPNOTSUPP;
ret = set_qp_param(hr_dev, hr_qp, init_attr, udata, &ucmd);
if (ret) {
ibdev_err(ibdev, "failed to set QP param, ret = %d.\n", ret);
return ret;
}
if (!udata) {
ret = alloc_kernel_wrid(hr_dev, hr_qp);
if (ret) {
ibdev_err(ibdev, "failed to alloc wrid, ret = %d.\n",
ret);
return ret;
}
}
ret = alloc_qp_buf(hr_dev, hr_qp, init_attr, udata, ucmd.buf_addr);
if (ret) {
ibdev_err(ibdev, "failed to alloc QP buffer, ret = %d.\n", ret);
goto err_buf;
}
ret = alloc_qpn(hr_dev, hr_qp);
if (ret) {
ibdev_err(ibdev, "failed to alloc QPN, ret = %d.\n", ret);
goto err_qpn;
}
ret = alloc_qp_db(hr_dev, hr_qp, init_attr, udata, &ucmd, &resp);
if (ret) {
ibdev_err(ibdev, "failed to alloc QP doorbell, ret = %d.\n",
ret);
goto err_db;
}
ret = alloc_qpc(hr_dev, hr_qp);
if (ret) {
ibdev_err(ibdev, "failed to alloc QP context, ret = %d.\n",
ret);
goto err_qpc;
}
ret = hns_roce_qp_store(hr_dev, hr_qp, init_attr);
if (ret) {
ibdev_err(ibdev, "failed to store QP, ret = %d.\n", ret);
goto err_store;
}
if (udata) {
resp.cap_flags = hr_qp->en_flags;
ret = ib_copy_to_udata(udata, &resp,
min(udata->outlen, sizeof(resp)));
if (ret) {
ibdev_err(ibdev, "copy qp resp failed!\n");
goto err_store;
}
}
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL) {
ret = hr_dev->hw->qp_flow_control_init(hr_dev, hr_qp);
if (ret)
goto err_flow_ctrl;
}
hr_qp->ibqp.qp_num = hr_qp->qpn;
hr_qp->event = hns_roce_ib_qp_event;
refcount_set(&hr_qp->refcount, 1);
init_completion(&hr_qp->free);
return 0;
err_flow_ctrl:
hns_roce_qp_remove(hr_dev, hr_qp);
err_store:
free_qpc(hr_dev, hr_qp);
err_qpc:
free_qp_db(hr_dev, hr_qp, udata);
err_db:
free_qpn(hr_dev, hr_qp);
err_qpn:
free_qp_buf(hr_dev, hr_qp);
err_buf:
free_kernel_wrid(hr_qp);
return ret;
}
void hns_roce_qp_destroy(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp,
struct ib_udata *udata)
{
if (refcount_dec_and_test(&hr_qp->refcount))
complete(&hr_qp->free);
wait_for_completion(&hr_qp->free);
free_qpc(hr_dev, hr_qp);
free_qpn(hr_dev, hr_qp);
free_qp_buf(hr_dev, hr_qp);
free_kernel_wrid(hr_qp);
free_qp_db(hr_dev, hr_qp, udata);
}
static int check_qp_type(struct hns_roce_dev *hr_dev, enum ib_qp_type type,
bool is_user)
{
switch (type) {
case IB_QPT_XRC_INI:
case IB_QPT_XRC_TGT:
if (!(hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_XRC))
goto out;
break;
case IB_QPT_UD:
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 &&
is_user)
goto out;
break;
case IB_QPT_RC:
case IB_QPT_GSI:
break;
default:
goto out;
}
return 0;
out:
ibdev_err(&hr_dev->ib_dev, "not support QP type %d\n", type);
return -EOPNOTSUPP;
}
int hns_roce_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *init_attr,
struct ib_udata *udata)
{
struct ib_device *ibdev = qp->device;
struct hns_roce_dev *hr_dev = to_hr_dev(ibdev);
struct hns_roce_qp *hr_qp = to_hr_qp(qp);
struct ib_pd *pd = qp->pd;
int ret;
ret = check_qp_type(hr_dev, init_attr->qp_type, !!udata);
if (ret)
return ret;
if (init_attr->qp_type == IB_QPT_XRC_TGT)
hr_qp->xrcdn = to_hr_xrcd(init_attr->xrcd)->xrcdn;
if (init_attr->qp_type == IB_QPT_GSI) {
hr_qp->port = init_attr->port_num - 1;
hr_qp->phy_port = hr_dev->iboe.phy_port[hr_qp->port];
}
ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata, hr_qp);
if (ret)
ibdev_err(ibdev, "create QP type 0x%x failed(%d)\n",
init_attr->qp_type, ret);
return ret;
}
int to_hr_qp_type(int qp_type)
{
switch (qp_type) {
case IB_QPT_RC:
return SERV_TYPE_RC;
case IB_QPT_UD:
case IB_QPT_GSI:
return SERV_TYPE_UD;
case IB_QPT_XRC_INI:
case IB_QPT_XRC_TGT:
return SERV_TYPE_XRC;
default:
return -1;
}
}
static int check_mtu_validate(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
struct ib_qp_attr *attr, int attr_mask)
{
enum ib_mtu active_mtu;
int p;
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_2048 &&
attr->path_mtu > hr_dev->caps.max_mtu) ||
attr->path_mtu < IB_MTU_256 || attr->path_mtu > active_mtu) {
ibdev_err(&hr_dev->ib_dev,
"attr path_mtu(%d)invalid while modify qp",
attr->path_mtu);
return -EINVAL;
}
return 0;
}
static int hns_roce_check_qp_attr(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
int p;
if ((attr_mask & IB_QP_PORT) &&
(attr->port_num == 0 || attr->port_num > hr_dev->caps.num_ports)) {
ibdev_err(&hr_dev->ib_dev, "invalid attr, port_num = %u.\n",
attr->port_num);
return -EINVAL;
}
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]) {
ibdev_err(&hr_dev->ib_dev,
"invalid attr, pkey_index = %u.\n",
attr->pkey_index);
return -EINVAL;
}
}
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
attr->max_rd_atomic > hr_dev->caps.max_qp_init_rdma) {
ibdev_err(&hr_dev->ib_dev,
"invalid attr, max_rd_atomic = %u.\n",
attr->max_rd_atomic);
return -EINVAL;
}
if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
attr->max_dest_rd_atomic > hr_dev->caps.max_qp_dest_rdma) {
ibdev_err(&hr_dev->ib_dev,
"invalid attr, max_dest_rd_atomic = %u.\n",
attr->max_dest_rd_atomic);
return -EINVAL;
}
if (attr_mask & IB_QP_PATH_MTU)
return check_mtu_validate(hr_dev, hr_qp, attr, attr_mask);
return 0;
}
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;
int ret = -EINVAL;
mutex_lock(&hr_qp->mutex);
if (attr_mask & IB_QP_CUR_STATE && attr->cur_qp_state != hr_qp->state)
goto out;
cur_state = hr_qp->state;
new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
if (ibqp->uobject &&
(attr_mask & IB_QP_STATE) && new_state == IB_QPS_ERR) {
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB) {
hr_qp->sq.head = *(int *)(hr_qp->sdb.virt_addr);
if (hr_qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)
hr_qp->rq.head = *(int *)(hr_qp->rdb.virt_addr);
} else {
ibdev_warn(&hr_dev->ib_dev,
"flush cqe is not supported in userspace!\n");
goto out;
}
}
if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type,
attr_mask)) {
ibdev_err(&hr_dev->ib_dev, "ib_modify_qp_is_ok failed\n");
goto out;
}
ret = hns_roce_check_qp_attr(ibqp, attr, attr_mask);
if (ret)
goto out;
if (cur_state == new_state && cur_state == IB_QPS_RESET)
goto out;
ret = hr_dev->hw->modify_qp(ibqp, attr, attr_mask, cur_state,
new_state, udata);
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 (unlikely(send_cq == NULL && recv_cq == NULL)) {
__acquire(&send_cq->lock);
__acquire(&recv_cq->lock);
} else if (unlikely(send_cq != NULL && recv_cq == NULL)) {
spin_lock_irq(&send_cq->lock);
__acquire(&recv_cq->lock);
} else if (unlikely(send_cq == NULL && recv_cq != NULL)) {
spin_lock_irq(&recv_cq->lock);
__acquire(&send_cq->lock);
} else 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);
}
}
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 (unlikely(send_cq == NULL && recv_cq == NULL)) {
__release(&recv_cq->lock);
__release(&send_cq->lock);
} else if (unlikely(send_cq != NULL && recv_cq == NULL)) {
__release(&recv_cq->lock);
spin_unlock(&send_cq->lock);
} else if (unlikely(send_cq == NULL && recv_cq != NULL)) {
__release(&send_cq->lock);
spin_unlock(&recv_cq->lock);
} else 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);
}
}
static inline void *get_wqe(struct hns_roce_qp *hr_qp, u32 offset)
{
return hns_roce_buf_offset(hr_qp->mtr.kmem, offset);
}
void *hns_roce_get_recv_wqe(struct hns_roce_qp *hr_qp, unsigned int n)
{
return get_wqe(hr_qp, hr_qp->rq.offset + (n << hr_qp->rq.wqe_shift));
}
void *hns_roce_get_send_wqe(struct hns_roce_qp *hr_qp, unsigned int n)
{
return get_wqe(hr_qp, hr_qp->sq.offset + (n << hr_qp->sq.wqe_shift));
}
void *hns_roce_get_extend_sge(struct hns_roce_qp *hr_qp, unsigned int n)
{
return get_wqe(hr_qp, hr_qp->sge.offset + (n << hr_qp->sge.sge_shift));
}
bool hns_roce_wq_overflow(struct hns_roce_wq *hr_wq, u32 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->wqe_cnt))
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->wqe_cnt;
}
int hns_roce_init_qp_table(struct hns_roce_dev *hr_dev)
{
struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
unsigned int reserved_from_bot;
unsigned int i;
qp_table->idx_table.spare_idx = kcalloc(hr_dev->caps.num_qps,
sizeof(u32), GFP_KERNEL);
if (!qp_table->idx_table.spare_idx)
return -ENOMEM;
mutex_init(&qp_table->scc_mutex);
mutex_init(&qp_table->bank_mutex);
xa_init(&hr_dev->qp_table_xa);
reserved_from_bot = hr_dev->caps.reserved_qps;
for (i = 0; i < reserved_from_bot; i++) {
hr_dev->qp_table.bank[get_qp_bankid(i)].inuse++;
hr_dev->qp_table.bank[get_qp_bankid(i)].min++;
}
for (i = 0; i < HNS_ROCE_QP_BANK_NUM; i++) {
ida_init(&hr_dev->qp_table.bank[i].ida);
hr_dev->qp_table.bank[i].max = hr_dev->caps.num_qps /
HNS_ROCE_QP_BANK_NUM - 1;
hr_dev->qp_table.bank[i].next = hr_dev->qp_table.bank[i].min;
}
return 0;
}
void hns_roce_cleanup_qp_table(struct hns_roce_dev *hr_dev)
{
int i;
for (i = 0; i < HNS_ROCE_QP_BANK_NUM; i++)
ida_destroy(&hr_dev->qp_table.bank[i].ida);
kfree(hr_dev->qp_table.idx_table.spare_idx);
}
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