Commit 46f5be7c authored by Konstantin Taranov's avatar Konstantin Taranov Committed by Leon Romanovsky
Browse files

RDMA/mana_ib: Introduce helpers to create and destroy mana queues 



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 become a WQ or a CQ.

Signed-off-by: default avatarKonstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1711483688-24358-2-git-send-email-kotaranov@linux.microsoft.com


Reviewed-by: default avatarLong Li <longli@microsoft.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent ca537a34

drivers/infiniband/hw/mana/main.c

+43 −0
Original line number Diff line number Diff line
@@ -237,6 +237,49 @@ 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)

{

	/* Ignore return code as there is not much we can do about it.

	 * The error message is printed inside.

	 */

	mana_ib_gd_destroy_dma_region(mdev, queue->gdma_region);

	ib_umem_release(queue->umem);

}



static int

mana_ib_gd_first_dma_region(struct mana_ib_dev *dev,

			    struct gdma_context *gc,

drivers/infiniband/hw/mana/mana_ib.h

+10 −0
Original line number Diff line number Diff line
@@ -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);