static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_udata *udata,
struct mlx4_ib_cq_buf *buf,
struct ib_umem **umem, u64 buf_addr, int cqe)
{
int err;
int cqe_size = dev->dev->caps.cqe_size;
int shift;
int n;
*umem = ib_umem_get(udata, buf_addr, cqe * cqe_size,
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(*umem))
return PTR_ERR(*umem);
n = ib_umem_page_count(*umem);
shift = mlx4_ib_umem_calc_optimal_mtt_size(*umem, 0, &n);
err = mlx4_mtt_init(dev->dev, n, shift, &buf->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &buf->mtt, *umem);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev->dev, &buf->mtt);
err_buf:
ib_umem_release(*umem);
return err;
}
static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *context,
struct mlx4_ib_cq_buf *buf, struct ib_umem **umem,
u64 buf_addr, int cqe)
{
int err;
*umem = ib_umem_get(context, buf_addr, cqe * sizeof (struct mlx4_cqe),
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(*umem))
return PTR_ERR(*umem);
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(*umem),
ilog2((*umem)->page_size), &buf->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &buf->mtt, *umem);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev->dev, &buf->mtt);
err_buf:
ib_umem_release(*umem);
return err;
}
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;
}
int hns_roce_db_map_user(struct hns_roce_ucontext *context, unsigned long virt,
struct hns_roce_db *db)
{
struct hns_roce_user_db_page *page;
int ret = 0;
mutex_lock(&context->page_mutex);
list_for_each_entry(page, &context->page_list, list)
if (page->user_virt == (virt & PAGE_MASK))
goto found;
page = kmalloc(sizeof(*page), GFP_KERNEL);
if (!page) {
ret = -ENOMEM;
goto out;
}
refcount_set(&page->refcount, 1);
page->user_virt = (virt & PAGE_MASK);
page->umem = ib_umem_get(&context->ibucontext, virt & PAGE_MASK,
PAGE_SIZE, 0, 0);
if (IS_ERR(page->umem)) {
ret = PTR_ERR(page->umem);
kfree(page);
goto out;
}
list_add(&page->list, &context->page_list);
found:
db->dma = sg_dma_address(page->umem->sg_head.sgl) +
(virt & ~PAGE_MASK);
db->u.user_page = page;
refcount_inc(&page->refcount);
out:
mutex_unlock(&context->page_mutex);
return ret;
}
struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
struct ib_srq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx4_ib_dev *dev = to_mdev(pd->device);
struct mlx4_ib_srq *srq;
struct mlx4_wqe_srq_next_seg *next;
struct mlx4_wqe_data_seg *scatter;
u32 cqn;
u16 xrcdn;
int desc_size;
int buf_size;
int err;
int i;
/* Sanity check SRQ size before proceeding */
if (init_attr->attr.max_wr >= dev->dev->caps.max_srq_wqes ||
init_attr->attr.max_sge > dev->dev->caps.max_srq_sge)
return ERR_PTR(-EINVAL);
srq = kmalloc(sizeof *srq, GFP_KERNEL);
if (!srq)
return ERR_PTR(-ENOMEM);
mutex_init(&srq->mutex);
spin_lock_init(&srq->lock);
srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
srq->msrq.max_gs = init_attr->attr.max_sge;
desc_size = max(32UL,
roundup_pow_of_two(sizeof (struct mlx4_wqe_srq_next_seg) +
srq->msrq.max_gs *
sizeof (struct mlx4_wqe_data_seg)));
srq->msrq.wqe_shift = ilog2(desc_size);
buf_size = srq->msrq.max * desc_size;
if (pd->uobject) {
struct mlx4_ib_create_srq ucmd;
if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
err = -EFAULT;
goto err_srq;
}
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
buf_size, 0, 0);
if (IS_ERR(srq->umem)) {
err = PTR_ERR(srq->umem);
goto err_srq;
}
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(srq->umem),
ilog2(srq->umem->page_size), &srq->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &srq->mtt, srq->umem);
if (err)
goto err_mtt;
err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err)
goto err_mtt;
} else {
err = mlx4_db_alloc(dev->dev, &srq->db, 0, GFP_KERNEL);
if (err)
goto err_srq;
*srq->db.db = 0;
if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &srq->buf,
GFP_KERNEL)) {
err = -ENOMEM;
goto err_db;
}
srq->head = 0;
srq->tail = srq->msrq.max - 1;
srq->wqe_ctr = 0;
for (i = 0; i < srq->msrq.max; ++i) {
next = get_wqe(srq, i);
next->next_wqe_index =
cpu_to_be16((i + 1) & (srq->msrq.max - 1));
for (scatter = (void *) (next + 1);
(void *) scatter < (void *) next + desc_size;
++scatter)
scatter->lkey = cpu_to_be32(MLX4_INVALID_LKEY);
}
err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,
&srq->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev->dev, &srq->mtt, &srq->buf, GFP_KERNEL);
if (err)
goto err_mtt;
srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL);
if (!srq->wrid) {
err = -ENOMEM;
goto err_mtt;
}
}
cqn = (init_attr->srq_type == IB_SRQT_XRC) ?
to_mcq(init_attr->ext.xrc.cq)->mcq.cqn : 0;
xrcdn = (init_attr->srq_type == IB_SRQT_XRC) ?
to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn :
(u16) dev->dev->caps.reserved_xrcds;
err = mlx4_srq_alloc(dev->dev, to_mpd(pd)->pdn, cqn, xrcdn, &srq->mtt,
srq->db.dma, &srq->msrq);
if (err)
goto err_wrid;
srq->msrq.event = mlx4_ib_srq_event;
srq->ibsrq.ext.xrc.srq_num = srq->msrq.srqn;
if (pd->uobject)
if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof (__u32))) {
err = -EFAULT;
goto err_wrid;
}
init_attr->attr.max_wr = srq->msrq.max - 1;
return &srq->ibsrq;
err_wrid:
if (pd->uobject)
mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
else
kfree(srq->wrid);
err_mtt:
mlx4_mtt_cleanup(dev->dev, &srq->mtt);
err_buf:
if (pd->uobject)
ib_umem_release(srq->umem);
else
mlx4_buf_free(dev->dev, buf_size, &srq->buf);
err_db:
if (!pd->uobject)
mlx4_db_free(dev->dev, &srq->db);
err_srq:
kfree(srq);
return ERR_PTR(err);
}
/**
* pvrdma_create_srq - create shared receive queue
* @pd: protection domain
* @init_attr: shared receive queue attributes
* @udata: user data
*
* @return: the ib_srq pointer on success, otherwise returns an errno.
*/
struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
struct ib_srq_init_attr *init_attr,
struct ib_udata *udata)
{
struct pvrdma_srq *srq = NULL;
struct pvrdma_dev *dev = to_vdev(pd->device);
union pvrdma_cmd_req req;
union pvrdma_cmd_resp rsp;
struct pvrdma_cmd_create_srq *cmd = &req.create_srq;
struct pvrdma_cmd_create_srq_resp *resp = &rsp.create_srq_resp;
struct pvrdma_create_srq_resp srq_resp = {0};
struct pvrdma_create_srq ucmd;
unsigned long flags;
int ret;
if (!udata) {
/* No support for kernel clients. */
dev_warn(&dev->pdev->dev,
"no shared receive queue support for kernel client\n");
return ERR_PTR(-EOPNOTSUPP);
}
if (init_attr->srq_type != IB_SRQT_BASIC) {
dev_warn(&dev->pdev->dev,
"shared receive queue type %d not supported\n",
init_attr->srq_type);
return ERR_PTR(-EINVAL);
}
if (init_attr->attr.max_wr > dev->dsr->caps.max_srq_wr ||
init_attr->attr.max_sge > dev->dsr->caps.max_srq_sge) {
dev_warn(&dev->pdev->dev,
"shared receive queue size invalid\n");
return ERR_PTR(-EINVAL);
}
if (!atomic_add_unless(&dev->num_srqs, 1, dev->dsr->caps.max_srq))
return ERR_PTR(-ENOMEM);
srq = kmalloc(sizeof(*srq), GFP_KERNEL);
if (!srq) {
ret = -ENOMEM;
goto err_srq;
}
spin_lock_init(&srq->lock);
refcount_set(&srq->refcnt, 1);
init_completion(&srq->free);
dev_dbg(&dev->pdev->dev,
"create shared receive queue from user space\n");
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
ret = -EFAULT;
goto err_srq;
}
srq->umem = ib_umem_get(pd->uobject->context,
ucmd.buf_addr,
ucmd.buf_size, 0, 0);
if (IS_ERR(srq->umem)) {
ret = PTR_ERR(srq->umem);
goto err_srq;
}
srq->npages = ib_umem_page_count(srq->umem);
if (srq->npages < 0 || srq->npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
dev_warn(&dev->pdev->dev,
"overflow pages in shared receive queue\n");
ret = -EINVAL;
goto err_umem;
}
ret = pvrdma_page_dir_init(dev, &srq->pdir, srq->npages, false);
if (ret) {
dev_warn(&dev->pdev->dev,
"could not allocate page directory\n");
goto err_umem;
}
pvrdma_page_dir_insert_umem(&srq->pdir, srq->umem, 0);
memset(cmd, 0, sizeof(*cmd));
cmd->hdr.cmd = PVRDMA_CMD_CREATE_SRQ;
cmd->srq_type = init_attr->srq_type;
cmd->nchunks = srq->npages;
cmd->pd_handle = to_vpd(pd)->pd_handle;
cmd->attrs.max_wr = init_attr->attr.max_wr;
cmd->attrs.max_sge = init_attr->attr.max_sge;
cmd->attrs.srq_limit = init_attr->attr.srq_limit;
cmd->pdir_dma = srq->pdir.dir_dma;
ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_SRQ_RESP);
if (ret < 0) {
dev_warn(&dev->pdev->dev,
"could not create shared receive queue, error: %d\n",
ret);
goto err_page_dir;
}
srq->srq_handle = resp->srqn;
srq_resp.srqn = resp->srqn;
spin_lock_irqsave(&dev->srq_tbl_lock, flags);
dev->srq_tbl[srq->srq_handle % dev->dsr->caps.max_srq] = srq;
spin_unlock_irqrestore(&dev->srq_tbl_lock, flags);
/* Copy udata back. */
if (ib_copy_to_udata(udata, &srq_resp, sizeof(srq_resp))) {
dev_warn(&dev->pdev->dev, "failed to copy back udata\n");
pvrdma_destroy_srq(&srq->ibsrq);
return ERR_PTR(-EINVAL);
}
return &srq->ibsrq;
err_page_dir:
pvrdma_page_dir_cleanup(dev, &srq->pdir);
err_umem:
ib_umem_release(srq->umem);
err_srq:
kfree(srq);
atomic_dec(&dev->num_srqs);
return ERR_PTR(ret);
}
struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
struct ib_srq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx4_ib_dev *dev = to_mdev(pd->device);
struct mlx4_ib_srq *srq;
struct mlx4_wqe_srq_next_seg *next;
int desc_size;
int buf_size;
int err;
int i;
if (init_attr->attr.max_wr >= dev->dev->caps.max_srq_wqes ||
init_attr->attr.max_sge > dev->dev->caps.max_srq_sge)
return ERR_PTR(-EINVAL);
srq = kmalloc(sizeof *srq, GFP_KERNEL);
if (!srq)
return ERR_PTR(-ENOMEM);
mutex_init(&srq->mutex);
spin_lock_init(&srq->lock);
srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
srq->msrq.max_gs = init_attr->attr.max_sge;
desc_size = max(32UL,
roundup_pow_of_two(sizeof (struct mlx4_wqe_srq_next_seg) +
srq->msrq.max_gs *
sizeof (struct mlx4_wqe_data_seg)));
srq->msrq.wqe_shift = ilog2(desc_size);
buf_size = srq->msrq.max * desc_size;
if (pd->uobject) {
struct mlx4_ib_create_srq ucmd;
if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
err = -EFAULT;
goto err_srq;
}
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
buf_size, 0, 0);
if (IS_ERR(srq->umem)) {
err = PTR_ERR(srq->umem);
goto err_srq;
}
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(srq->umem),
ilog2(srq->umem->page_size), &srq->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &srq->mtt, srq->umem);
if (err)
goto err_mtt;
err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err)
goto err_mtt;
} else {
err = mlx4_db_alloc(dev->dev, &srq->db, 0);
if (err)
goto err_srq;
*srq->db.db = 0;
if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
err = -ENOMEM;
goto err_db;
}
srq->head = 0;
srq->tail = srq->msrq.max - 1;
srq->wqe_ctr = 0;
for (i = 0; i < srq->msrq.max; ++i) {
next = get_wqe(srq, i);
next->next_wqe_index =
cpu_to_be16((i + 1) & (srq->msrq.max - 1));
}
err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,
&srq->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev->dev, &srq->mtt, &srq->buf);
if (err)
goto err_mtt;
srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL);
if (!srq->wrid) {
err = -ENOMEM;
goto err_mtt;
}
}
err = mlx4_srq_alloc(dev->dev, to_mpd(pd)->pdn, &srq->mtt,
srq->db.dma, &srq->msrq);
if (err)
goto err_wrid;
srq->msrq.event = mlx4_ib_srq_event;
if (pd->uobject)
if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof (__u32))) {
err = -EFAULT;
goto err_wrid;
}
init_attr->attr.max_wr = srq->msrq.max - 1;
return &srq->ibsrq;
err_wrid:
if (pd->uobject)
mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
else
kfree(srq->wrid);
err_mtt:
mlx4_mtt_cleanup(dev->dev, &srq->mtt);
err_buf:
if (pd->uobject)
ib_umem_release(srq->umem);
else
mlx4_buf_free(dev->dev, buf_size, &srq->buf);
err_db:
if (!pd->uobject)
mlx4_db_free(dev->dev, &srq->db);
err_srq:
kfree(srq);
return ERR_PTR(err);
}
ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
{
struct ib_uverbs_reg_mr cmd;
struct ib_uverbs_reg_mr_resp resp;
struct ib_udata udata;
struct ib_umem_object *obj;
struct ib_pd *pd;
struct ib_mr *mr;
int ret;
if (out_len < sizeof resp)
return -ENOSPC;
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
INIT_UDATA(&udata, buf + sizeof cmd,
(unsigned long) cmd.response + sizeof resp,
in_len - sizeof cmd, out_len - sizeof resp);
if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
return -EINVAL;
/*
* Local write permission is required if remote write or
* remote atomic permission is also requested.
*/
if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
!(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
return -EINVAL;
obj = kmalloc(sizeof *obj, GFP_KERNEL);
if (!obj)
return -ENOMEM;
obj->uobject.context = file->ucontext;
/*
* We ask for writable memory if any access flags other than
* "remote read" are set. "Local write" and "remote write"
* obviously require write access. "Remote atomic" can do
* things like fetch and add, which will modify memory, and
* "MW bind" can change permissions by binding a window.
*/
ret = ib_umem_get(file->device->ib_dev, &obj->umem,
(void *) (unsigned long) cmd.start, cmd.length,
!!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ));
if (ret)
goto err_free;
obj->umem.virt_base = cmd.hca_va;
mutex_lock(&ib_uverbs_idr_mutex);
pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
if (!pd || pd->uobject->context != file->ucontext) {
ret = -EINVAL;
goto err_up;
}
if (!pd->device->reg_user_mr) {
ret = -ENOSYS;
goto err_up;
}
mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata);
if (IS_ERR(mr)) {
ret = PTR_ERR(mr);
goto err_up;
}
mr->device = pd->device;
mr->pd = pd;
mr->uobject = &obj->uobject;
atomic_inc(&pd->usecnt);
atomic_set(&mr->usecnt, 0);
memset(&resp, 0, sizeof resp);
resp.lkey = mr->lkey;
resp.rkey = mr->rkey;
retry:
if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) {
ret = -ENOMEM;
goto err_unreg;
}
ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id);
if (ret == -EAGAIN)
goto retry;
if (ret)
goto err_unreg;
resp.mr_handle = obj->uobject.id;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
ret = -EFAULT;
goto err_idr;
}
mutex_lock(&file->mutex);
list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
mutex_unlock(&file->mutex);
mutex_unlock(&ib_uverbs_idr_mutex);
return in_len;
err_idr:
idr_remove(&ib_uverbs_mr_idr, obj->uobject.id);
err_unreg:
ib_dereg_mr(mr);
atomic_dec(&pd->usecnt);
err_up:
mutex_unlock(&ib_uverbs_idr_mutex);
ib_umem_release(file->device->ib_dev, &obj->umem);
err_free:
kfree(obj);
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, 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;
}
static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
struct mlx5_create_srq_mbox_in **in,
struct ib_udata *udata, int buf_size, int *inlen)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_ib_create_srq ucmd;
int err;
int npages;
int page_shift;
int ncont;
u32 offset;
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
mlx5_ib_dbg(dev, "failed copy udata\n");
return -EFAULT;
}
srq->wq_sig = !!(ucmd.flags & MLX5_SRQ_FLAG_SIGNATURE);
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, buf_size,
0, 0);
if (IS_ERR(srq->umem)) {
mlx5_ib_dbg(dev, "failed umem get, size %d\n", buf_size);
err = PTR_ERR(srq->umem);
return err;
}
mlx5_ib_cont_pages(srq->umem, ucmd.buf_addr, &npages,
&page_shift, &ncont, NULL);
err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift,
&offset);
if (err) {
mlx5_ib_warn(dev, "bad offset\n");
goto err_umem;
}
*inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
*in = mlx5_vzalloc(*inlen);
if (!(*in)) {
err = -ENOMEM;
goto err_umem;
}
mlx5_ib_populate_pas(dev, srq->umem, page_shift, (*in)->pas, 0);
err = mlx5_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err) {
mlx5_ib_dbg(dev, "map doorbell failed\n");
goto err_in;
}
(*in)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
(*in)->ctx.pgoff_cqn = cpu_to_be32(offset << 26);
return 0;
err_in:
mlx5_vfree(*in);
err_umem:
ib_umem_release(srq->umem);
return err;
}
static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
struct mlx5_srq_attr *in,
struct ib_udata *udata, int buf_size)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_ib_create_srq ucmd = {};
size_t ucmdlen;
int err;
int npages;
int page_shift;
int ncont;
u32 offset;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
ucmdlen = min(udata->inlen, sizeof(ucmd));
if (ib_copy_from_udata(&ucmd, udata, ucmdlen)) {
mlx5_ib_dbg(dev, "failed copy udata\n");
return -EFAULT;
}
if (ucmd.reserved0 || ucmd.reserved1)
return -EINVAL;
if (udata->inlen > sizeof(ucmd) &&
!ib_is_udata_cleared(udata, sizeof(ucmd),
udata->inlen - sizeof(ucmd)))
return -EINVAL;
if (in->type == IB_SRQT_XRC) {
err = get_srq_user_index(to_mucontext(pd->uobject->context),
&ucmd, udata->inlen, &uidx);
if (err)
return err;
}
srq->wq_sig = !!(ucmd.flags & MLX5_SRQ_FLAG_SIGNATURE);
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, buf_size,
0, 0);
if (IS_ERR(srq->umem)) {
mlx5_ib_dbg(dev, "failed umem get, size %d\n", buf_size);
err = PTR_ERR(srq->umem);
return err;
}
mlx5_ib_cont_pages(srq->umem, ucmd.buf_addr, &npages,
&page_shift, &ncont, NULL);
err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift,
&offset);
if (err) {
mlx5_ib_warn(dev, "bad offset\n");
goto err_umem;
}
in->pas = mlx5_vzalloc(sizeof(*in->pas) * ncont);
if (!in->pas) {
err = -ENOMEM;
goto err_umem;
}
mlx5_ib_populate_pas(dev, srq->umem, page_shift, in->pas, 0);
err = mlx5_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err) {
mlx5_ib_dbg(dev, "map doorbell failed\n");
goto err_in;
}
in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
in->page_offset = offset;
if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 &&
in->type == IB_SRQT_XRC)
in->user_index = uidx;
return 0;
err_in:
kvfree(in->pas);
err_umem:
ib_umem_release(srq->umem);
return err;
}
