diff options
Diffstat (limited to 'drivers/infiniband/hw/mana/main.c')
| -rw-r--r-- | drivers/infiniband/hw/mana/main.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index 71e33feee..4524c6b80 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -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, |