6.8-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Taranov kotaranov@microsoft.com
[ Upstream commit 46f5be7cd4bceb3a503c544b3dab7b75fe4bb96b ]
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: Konstantin Taranov kotaranov@microsoft.com Link: https://lore.kernel.org/r/1711483688-24358-2-git-send-email-kotaranov@linux.... Reviewed-by: Long Li longli@microsoft.com Signed-off-by: Leon Romanovsky leon@kernel.org Stable-dep-of: f79edef79b6a ("RDMA/mana_ib: boundary check before installing cq callbacks") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/mana/main.c | 43 ++++++++++++++++++++++++++++ drivers/infiniband/hw/mana/mana_ib.h | 10 +++++++ 2 files changed, 53 insertions(+)
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index 71e33feee61bb..4524c6b807487 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, diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h index f83390eebb7d7..859fd3bfc764f 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);