> > From: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
> >
> > Intoduce helpers to work with mana ib queues (struct mana_ib_queue).
> > A queue always consists of umem, gdma_region, and id.
> > A queue can be used for a WQ or a CQ.
> >
> > Signed-off-by: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
> > ---
> > drivers/infiniband/hw/mana/main.c | 40
> ++++++++++++++++++++++++++++
> > drivers/infiniband/hw/mana/mana_ib.h | 10 +++++++
> > 2 files changed, 50 insertions(+)
> >
> > diff --git a/drivers/infiniband/hw/mana/main.c
> > b/drivers/infiniband/hw/mana/main.c
> > index 71e33feee..0ec940b97 100644
> > --- a/drivers/infiniband/hw/mana/main.c
> > +++ b/drivers/infiniband/hw/mana/main.c
> > @@ -237,6 +237,46 @@ void mana_ib_dealloc_ucontext(struct
> ib_ucontext *ibcontext)
> > ibdev_dbg(ibdev, "Failed to destroy doorbell page %d\n", ret);
> > }
> >
> > +int mana_ib_create_queue(struct mana_ib_dev *mdev, u64 addr, u32 size,
> > + struct mana_ib_queue *queue) {
> > + struct ib_umem *umem;
> > + int err;
> > +
> > + queue->umem = NULL;
> > + queue->id = INVALID_QUEUE_ID;
> > + queue->gdma_region = GDMA_INVALID_DMA_REGION;
> > +
> > + umem = ib_umem_get(&mdev->ib_dev, addr, size,
> IB_ACCESS_LOCAL_WRITE);
> > + if (IS_ERR(umem)) {
> > + err = PTR_ERR(umem);
> > + ibdev_dbg(&mdev->ib_dev, "Failed to get umem, %d\n", err);
> > + return err;
> > + }
> > +
> > + err = mana_ib_create_zero_offset_dma_region(mdev, umem, &queue-
> >gdma_region);
> > + if (err) {
> > + ibdev_dbg(&mdev->ib_dev, "Failed to create dma region, %d\n",
> err);
> > + goto free_umem;
> > + }
> > + queue->umem = umem;
> > +
> > + ibdev_dbg(&mdev->ib_dev,
> > + "create_dma_region ret %d gdma_region 0x%llx\n",
> > + err, queue->gdma_region);
> > +
> > + return 0;
> > +free_umem:
> > + ib_umem_release(umem);
> > + return err;
> > +}
> > +
> > +void mana_ib_destroy_queue(struct mana_ib_dev *mdev, struct
> > +mana_ib_queue *queue) {
> > + mana_ib_gd_destroy_dma_region(mdev, queue->gdma_region);
>
> The function mana_ib_gd_destroy_dma_region will call
> mana_gd_destroy_dma_region. In the function
> mana_gd_destroy_dma_region, the function mana_gd_send_request will
> return the error -EPROTO.
> The procedure is as below. So the function mana_ib_destroy_queue should
> also handle this error?
Thanks for the comment!
This error can be ignored and it was ignored before this commit.
I checked the corresponding Windows driver code, and it is also intentionally ignored there.
I can add a comment that the error is ignored intentionally if you want.
>
> mana_ib_gd_destroy_dma_region --- > mana_gd_destroy_dma_region
>
> 693 int mana_gd_destroy_dma_region(struct gdma_context *gc, u64
> dma_region_handle)
> 694 {
>
> ...
>
> 706 err = mana_gd_send_request(gc, sizeof(req), &req,
> sizeof(resp), &resp);
> 707 if (err || resp.hdr.status) {
> 708 dev_err(gc->dev, "Failed to destroy DMA region:
> %d, 0x%x\n",
> 709 err, resp.hdr.status);
> 710 return -EPROTO;
> 711 }
>
> ...
>
> 714 }
>
> Zhu Yanjun
>
> > + ib_umem_release(queue->umem);
> > +}
> > +
> > static int
> > mana_ib_gd_first_dma_region(struct mana_ib_dev *dev,
> > struct gdma_context *gc, diff --git
> > a/drivers/infiniband/hw/mana/mana_ib.h
> > b/drivers/infiniband/hw/mana/mana_ib.h
> > index f83390eeb..859fd3bfc 100644
> > --- a/drivers/infiniband/hw/mana/mana_ib.h
> > +++ b/drivers/infiniband/hw/mana/mana_ib.h
> > @@ -45,6 +45,12 @@ struct mana_ib_adapter_caps {
> > u32 max_inline_data_size;
> > };
> >
> > +struct mana_ib_queue {
> > + struct ib_umem *umem;
> > + u64 gdma_region;
> > + u64 id;
> > +};
> > +
> > struct mana_ib_dev {
> > struct ib_device ib_dev;
> > struct gdma_dev *gdma_dev;
> > @@ -169,6 +175,10 @@ int mana_ib_create_dma_region(struct
> mana_ib_dev *dev, struct ib_umem *umem,
> > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev,
> > mana_handle_t gdma_region);
> >
> > +int mana_ib_create_queue(struct mana_ib_dev *mdev, u64 addr, u32 size,
> > + struct mana_ib_queue *queue); void
> > +mana_ib_destroy_queue(struct mana_ib_dev *mdev, struct
> mana_ib_queue
> > +*queue);
> > +
> > struct ib_wq *mana_ib_create_wq(struct ib_pd *pd,
> > struct ib_wq_init_attr *init_attr,
> > struct ib_udata *udata);
