int hns_roce_ib_destroy_cq(struct ib_cq *ib_cq)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ib_cq->device);
struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
int ret = 0;
if (hr_dev->hw->destroy_cq) {
ret = hr_dev->hw->destroy_cq(ib_cq);
} else {
hns_roce_free_cq(hr_dev, hr_cq);
hns_roce_mtt_cleanup(hr_dev, &hr_cq->hr_buf.hr_mtt);
if (ib_cq->uobject) {
ib_umem_release(hr_cq->umem);
if (hr_cq->db_en == 1)
hns_roce_db_unmap_user(
to_hr_ucontext(ib_cq->uobject->context),
&hr_cq->db);
} else {
/* Free the buff of stored cq */
hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf,
ib_cq->cqe);
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)
hns_roce_free_db(hr_dev, &hr_cq->db);
}
kfree(hr_cq);
}
return ret;
}
static int hns_roce_ib_get_cq_umem(struct hns_roce_dev *hr_dev,
struct ib_udata *udata,
struct hns_roce_cq_buf *buf,
struct ib_umem **umem, u64 buf_addr, int cqe)
{
int ret;
u32 page_shift;
u32 npages;
*umem = ib_umem_get(udata, buf_addr, cqe * hr_dev->caps.cq_entry_sz,
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(*umem))
return PTR_ERR(*umem);
if (hns_roce_check_whether_mhop(hr_dev, HEM_TYPE_CQE))
buf->hr_mtt.mtt_type = MTT_TYPE_CQE;
else
buf->hr_mtt.mtt_type = MTT_TYPE_WQE;
if (hr_dev->caps.cqe_buf_pg_sz) {
npages = (ib_umem_page_count(*umem) +
(1 << hr_dev->caps.cqe_buf_pg_sz) - 1) /
(1 << hr_dev->caps.cqe_buf_pg_sz);
page_shift = PAGE_SHIFT + hr_dev->caps.cqe_buf_pg_sz;
ret = hns_roce_mtt_init(hr_dev, npages, page_shift,
&buf->hr_mtt);
} else {
ret = hns_roce_mtt_init(hr_dev, ib_umem_page_count(*umem),
(*umem)->page_shift,
&buf->hr_mtt);
}
if (ret)
goto err_buf;
ret = hns_roce_ib_umem_write_mtt(hr_dev, &buf->hr_mtt, *umem);
if (ret)
goto err_mtt;
return 0;
err_mtt:
hns_roce_mtt_cleanup(hr_dev, &buf->hr_mtt);
err_buf:
ib_umem_release(*umem);
return ret;
}
static int hns_roce_ib_alloc_cq_buf(struct hns_roce_dev *hr_dev,
struct hns_roce_cq_buf *buf, u32 nent)
{
int ret;
u32 page_shift = PAGE_SHIFT + hr_dev->caps.cqe_buf_pg_sz;
ret = hns_roce_buf_alloc(hr_dev, nent * hr_dev->caps.cq_entry_sz,
(1 << page_shift) * 2, &buf->hr_buf,
page_shift);
if (ret)
goto out;
if (hns_roce_check_whether_mhop(hr_dev, HEM_TYPE_CQE))
buf->hr_mtt.mtt_type = MTT_TYPE_CQE;
else
buf->hr_mtt.mtt_type = MTT_TYPE_WQE;
ret = hns_roce_mtt_init(hr_dev, buf->hr_buf.npages,
buf->hr_buf.page_shift, &buf->hr_mtt);
if (ret)
goto err_buf;
ret = hns_roce_buf_write_mtt(hr_dev, &buf->hr_mtt, &buf->hr_buf);
if (ret)
goto err_mtt;
return 0;
err_mtt:
hns_roce_mtt_cleanup(hr_dev, &buf->hr_mtt);
err_buf:
hns_roce_buf_free(hr_dev, nent * hr_dev->caps.cq_entry_sz,
&buf->hr_buf);
out:
return ret;
}
struct ib_cq *hns_roce_ib_create_cq(struct ib_device *ib_dev,
const struct ib_cq_init_attr *attr,
struct ib_ucontext *context,
struct ib_udata *udata)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
struct device *dev = hr_dev->dev;
struct hns_roce_ib_create_cq ucmd;
struct hns_roce_ib_create_cq_resp resp = {};
struct hns_roce_cq *hr_cq = NULL;
struct hns_roce_uar *uar = NULL;
int vector = attr->comp_vector;
int cq_entries = attr->cqe;
int ret;
if (cq_entries < 1 || cq_entries > hr_dev->caps.max_cqes) {
dev_err(dev, "Creat CQ failed. entries=%d, max=%d\n",
cq_entries, hr_dev->caps.max_cqes);
return ERR_PTR(-EINVAL);
}
hr_cq = kzalloc(sizeof(*hr_cq), GFP_KERNEL);
if (!hr_cq)
return ERR_PTR(-ENOMEM);
if (hr_dev->caps.min_cqes)
cq_entries = max(cq_entries, hr_dev->caps.min_cqes);
cq_entries = roundup_pow_of_two((unsigned int)cq_entries);
hr_cq->ib_cq.cqe = cq_entries - 1;
spin_lock_init(&hr_cq->lock);
if (context) {
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
dev_err(dev, "Failed to copy_from_udata.\n");
ret = -EFAULT;
goto err_cq;
}
/* Get user space address, write it into mtt table */
ret = hns_roce_ib_get_cq_umem(hr_dev, udata, &hr_cq->hr_buf,
&hr_cq->umem, ucmd.buf_addr,
cq_entries);
if (ret) {
dev_err(dev, "Failed to get_cq_umem.\n");
goto err_cq;
}
if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
(udata->outlen >= sizeof(resp))) {
ret = hns_roce_db_map_user(to_hr_ucontext(context),
udata, ucmd.db_addr,
&hr_cq->db);
if (ret) {
dev_err(dev, "cq record doorbell map failed!\n");
goto err_mtt;
}
hr_cq->db_en = 1;
resp.cap_flags |= HNS_ROCE_SUPPORT_CQ_RECORD_DB;
}
/* Get user space parameters */
uar = &to_hr_ucontext(context)->uar;
} else {
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) {
ret = hns_roce_alloc_db(hr_dev, &hr_cq->db, 1);
if (ret)
goto err_cq;
hr_cq->set_ci_db = hr_cq->db.db_record;
*hr_cq->set_ci_db = 0;
hr_cq->db_en = 1;
}
/* Init mmt table and write buff address to mtt table */
ret = hns_roce_ib_alloc_cq_buf(hr_dev, &hr_cq->hr_buf,
cq_entries);
if (ret) {
dev_err(dev, "Failed to alloc_cq_buf.\n");
goto err_db;
}
uar = &hr_dev->priv_uar;
hr_cq->cq_db_l = hr_dev->reg_base + hr_dev->odb_offset +
DB_REG_OFFSET * uar->index;
}
/* Allocate cq index, fill cq_context */
ret = hns_roce_cq_alloc(hr_dev, cq_entries, &hr_cq->hr_buf.hr_mtt, uar,
hr_cq, vector);
if (ret) {
dev_err(dev, "Creat CQ .Failed to cq_alloc.\n");
goto err_dbmap;
}
/*
* For the QP created by kernel space, tptr value should be initialized
* to zero; For the QP created by user space, it will cause synchronous
* problems if tptr is set to zero here, so we initialze it in user
* space.
*/
if (!context && hr_cq->tptr_addr)
*hr_cq->tptr_addr = 0;
/* Get created cq handler and carry out event */
hr_cq->comp = hns_roce_ib_cq_comp;
hr_cq->event = hns_roce_ib_cq_event;
hr_cq->cq_depth = cq_entries;
if (context) {
resp.cqn = hr_cq->cqn;
ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
if (ret)
goto err_cqc;
}
return &hr_cq->ib_cq;
err_cqc:
hns_roce_free_cq(hr_dev, hr_cq);
err_dbmap:
if (context && (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
(udata->outlen >= sizeof(resp)))
hns_roce_db_unmap_user(to_hr_ucontext(context),
&hr_cq->db);
err_mtt:
hns_roce_mtt_cleanup(hr_dev, &hr_cq->hr_buf.hr_mtt);
if (context)
ib_umem_release(hr_cq->umem);
else
hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf,
hr_cq->ib_cq.cqe);
err_db:
if (!context && (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB))
hns_roce_free_db(hr_dev, &hr_cq->db);
err_cq:
kfree(hr_cq);
return ERR_PTR(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, unsigned long sqpn,
struct hns_roce_qp *hr_qp)
{
struct device *dev = hr_dev->dev;
struct hns_roce_ib_create_qp ucmd;
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;
}
} 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;
/* 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_rq_sge_list;
}
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);
hr_qp->event = hns_roce_ib_qp_event;
return 0;
err_qpn:
if (!sqpn)
hns_roce_release_range_qp(hr_dev, qpn, 1);
err_wrid:
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_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;
}
