在 2024/3/13 14:24, Konstantin Taranov 写道:
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?
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);
