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RDMA/mana_ib: create kernel-level CQs

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Implement creation of CQs for the kernel.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://patch.msgid.link/1737394039-28772-5-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Shiraz Saleem <shirazsaleem@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Konstantin Taranov 2025-01-20 09:27:10 -08:00 • committed by Leon Romanovsky
parent 1440bdbd9c
commit bec127e45d
1 changed files with 55 additions and 31 deletions
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30
drivers/infiniband/hw/mana/cq.c
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@ -15,22 +15,25 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
struct ib_device *ibdev = ibcq->device;
struct mana_ib_create_cq ucmd = {};
struct mana_ib_dev *mdev;
struct gdma_context *gc;
bool is_rnic_cq;
u32 doorbell;
u32 buf_size;
int err;
mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
gc = mdev_to_gc(mdev);
cq->comp_vector = attr->comp_vector % ibdev->num_comp_vectors;
cq->cq_handle = INVALID_MANA_HANDLE;
if (udata) {
if (udata->inlen < offsetof(struct mana_ib_create_cq, flags))
return -EINVAL;
err = ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen));
if (err) {
ibdev_dbg(ibdev,
"Failed to copy from udata for create cq, %d\n", err);
ibdev_dbg(ibdev, "Failed to copy from udata for create cq, %d\n", err);
return err;
}
@ -42,7 +45,8 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
}
cq->cqe = attr->cqe;
err = mana_ib_create_queue(mdev, ucmd.buf_addr, cq->cqe * COMP_ENTRY_SIZE, &cq->queue);
err = mana_ib_create_queue(mdev, ucmd.buf_addr, cq->cqe * COMP_ENTRY_SIZE,
&cq->queue);
if (err) {
ibdev_dbg(ibdev, "Failed to create queue for create cq, %d\n", err);
return err;
@ -51,6 +55,17 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
mana_ucontext = rdma_udata_to_drv_context(udata, struct mana_ib_ucontext,
ibucontext);
doorbell = mana_ucontext->doorbell;
} else {
is_rnic_cq = true;
buf_size = MANA_PAGE_ALIGN(roundup_pow_of_two(attr->cqe * COMP_ENTRY_SIZE));
cq->cqe = buf_size / COMP_ENTRY_SIZE;
err = mana_ib_create_kernel_queue(mdev, buf_size, GDMA_CQ, &cq->queue);
if (err) {
ibdev_dbg(ibdev, "Failed to create kernel queue for create cq, %d\n", err);
return err;
}
doorbell = gc->mana_ib.doorbell;
}
if (is_rnic_cq) {
err = mana_ib_gd_create_cq(mdev, cq, doorbell);
@ -66,12 +81,14 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
}
}
if (udata) {
resp.cqid = cq->queue.id;
err = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen));
if (err) {
ibdev_dbg(&mdev->ib_dev, "Failed to copy to udata, %d\n", err);
goto err_remove_cq_cb;
}
}
return 0;
@ -122,6 +139,9 @@ int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
return -EINVAL;
/* Create CQ table entry */
WARN_ON(gc->cq_table[cq->queue.id]);
if (cq->queue.kmem)
gdma_cq = cq->queue.kmem;
else
gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL);
if (!gdma_cq)
return -ENOMEM;
@ -141,6 +161,10 @@ void mana_ib_remove_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
if (cq->queue.id >= gc->max_num_cqs || cq->queue.id == INVALID_QUEUE_ID)
return;
if (cq->queue.kmem)
/* Then it will be cleaned and removed by the mana */
return;
kfree(gc->cq_table[cq->queue.id]);
gc->cq_table[cq->queue.id] = NULL;
}