diff options
author | Konstantin Taranov <kotaranov@microsoft.com> | 2024-03-04 16:52:41 +0300 |
---|---|---|
committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:17:26 +0300 |
commit | 293fcadf2fa7dedcb810dcc46e0de05f6567f4d4 (patch) | |
tree | c6f483731cbbc5293939b1cf11318bee701dc64e | |
parent | cf9cc859d6ff37ce52c09dfbb169b9ee25595a3f (diff) | |
download | linux-293fcadf2fa7dedcb810dcc46e0de05f6567f4d4.tar.xz |
RDMA/mana_ib: Use virtual address in dma regions for MRs
[ Upstream commit 2d5c00815778ec4f4e0a84e405e3e157b7815db1 ]
Introduce mana_ib_create_dma_region() to create dma regions with iova
for MRs. It allows creating MRs with any page offset. Previously,
only page-aligned addresses worked.
For dma regions that must have a zero dma offset (e.g., for queues),
mana_ib_create_zero_offset_dma_region() is added.
To get the zero offset, ib_umem_find_best_pgoff() is used with zero
pgoff_bitmask.
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1709560361-26393-3-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r-- | drivers/infiniband/hw/mana/cq.c | 4 | ||||
-rw-r--r-- | drivers/infiniband/hw/mana/main.c | 40 | ||||
-rw-r--r-- | drivers/infiniband/hw/mana/mana_ib.h | 7 | ||||
-rw-r--r-- | drivers/infiniband/hw/mana/mr.c | 4 | ||||
-rw-r--r-- | drivers/infiniband/hw/mana/qp.c | 6 | ||||
-rw-r--r-- | drivers/infiniband/hw/mana/wq.c | 4 |
6 files changed, 45 insertions, 20 deletions
diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c index 83d20c3f048d..4a71e678d09c 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -48,7 +48,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, return err; } - err = mana_ib_gd_create_dma_region(mdev, cq->umem, &cq->gdma_region); + err = mana_ib_create_zero_offset_dma_region(mdev, cq->umem, &cq->gdma_region); if (err) { ibdev_dbg(ibdev, "Failed to create dma region for create cq, %d\n", @@ -57,7 +57,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, } ibdev_dbg(ibdev, - "mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n", + "create_dma_region ret %d gdma_region 0x%llx\n", err, cq->gdma_region); /* diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index dd570832d61e..71e33feee61b 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -301,8 +301,8 @@ mana_ib_gd_add_dma_region(struct mana_ib_dev *dev, struct gdma_context *gc, return 0; } -int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, - mana_handle_t *gdma_region) +static int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, + mana_handle_t *gdma_region, unsigned long page_sz) { struct gdma_dma_region_add_pages_req *add_req = NULL; size_t num_pages_processed = 0, num_pages_to_handle; @@ -314,7 +314,6 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, size_t max_pgs_create_cmd; struct gdma_context *gc; size_t num_pages_total; - unsigned long page_sz; unsigned int tail = 0; u64 *page_addr_list; void *request_buf; @@ -323,12 +322,6 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, gc = mdev_to_gc(dev); hwc = gc->hwc.driver_data; - /* Hardware requires dma region to align to chosen page size */ - page_sz = ib_umem_find_best_pgsz(umem, PAGE_SZ_BM, 0); - if (!page_sz) { - ibdev_dbg(&dev->ib_dev, "failed to find page size.\n"); - return -ENOMEM; - } num_pages_total = ib_umem_num_dma_blocks(umem, page_sz); max_pgs_create_cmd = @@ -414,6 +407,35 @@ out: return err; } +int mana_ib_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, + mana_handle_t *gdma_region, u64 virt) +{ + unsigned long page_sz; + + page_sz = ib_umem_find_best_pgsz(umem, PAGE_SZ_BM, virt); + if (!page_sz) { + ibdev_dbg(&dev->ib_dev, "Failed to find page size.\n"); + return -EINVAL; + } + + return mana_ib_gd_create_dma_region(dev, umem, gdma_region, page_sz); +} + +int mana_ib_create_zero_offset_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, + mana_handle_t *gdma_region) +{ + unsigned long page_sz; + + /* Hardware requires dma region to align to chosen page size */ + page_sz = ib_umem_find_best_pgoff(umem, PAGE_SZ_BM, 0); + if (!page_sz) { + ibdev_dbg(&dev->ib_dev, "Failed to find page size.\n"); + return -EINVAL; + } + + return mana_ib_gd_create_dma_region(dev, umem, gdma_region, page_sz); +} + int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 gdma_region) { struct gdma_context *gc = mdev_to_gc(dev); diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h index 6a03ae645c01..f83390eebb7d 100644 --- a/drivers/infiniband/hw/mana/mana_ib.h +++ b/drivers/infiniband/hw/mana/mana_ib.h @@ -160,8 +160,11 @@ static inline struct net_device *mana_ib_get_netdev(struct ib_device *ibdev, u32 int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq); -int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, - mana_handle_t *gdma_region); +int mana_ib_create_zero_offset_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, + mana_handle_t *gdma_region); + +int mana_ib_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, + mana_handle_t *gdma_region, u64 virt); int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, mana_handle_t gdma_region); diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c index ee4d4f83467c..b70b13484f09 100644 --- a/drivers/infiniband/hw/mana/mr.c +++ b/drivers/infiniband/hw/mana/mr.c @@ -127,7 +127,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 length, goto err_free; } - err = mana_ib_gd_create_dma_region(dev, mr->umem, &dma_region_handle); + err = mana_ib_create_dma_region(dev, mr->umem, &dma_region_handle, iova); if (err) { ibdev_dbg(ibdev, "Failed create dma region for user-mr, %d\n", err); @@ -135,7 +135,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 length, } ibdev_dbg(ibdev, - "mana_ib_gd_create_dma_region ret %d gdma_region %llx\n", err, + "create_dma_region ret %d gdma_region %llx\n", err, dma_region_handle); mr_params.pd_handle = pd->pd_handle; diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c index 5d4c05dcd003..6e7627745c95 100644 --- a/drivers/infiniband/hw/mana/qp.c +++ b/drivers/infiniband/hw/mana/qp.c @@ -357,8 +357,8 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, } qp->sq_umem = umem; - err = mana_ib_gd_create_dma_region(mdev, qp->sq_umem, - &qp->sq_gdma_region); + err = mana_ib_create_zero_offset_dma_region(mdev, qp->sq_umem, + &qp->sq_gdma_region); if (err) { ibdev_dbg(&mdev->ib_dev, "Failed to create dma region for create qp-raw, %d\n", @@ -367,7 +367,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, } ibdev_dbg(&mdev->ib_dev, - "mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n", + "create_dma_region ret %d gdma_region 0x%llx\n", err, qp->sq_gdma_region); /* Create a WQ on the same port handle used by the Ethernet */ diff --git a/drivers/infiniband/hw/mana/wq.c b/drivers/infiniband/hw/mana/wq.c index 372d361510e0..7c9c69962573 100644 --- a/drivers/infiniband/hw/mana/wq.c +++ b/drivers/infiniband/hw/mana/wq.c @@ -46,7 +46,7 @@ struct ib_wq *mana_ib_create_wq(struct ib_pd *pd, wq->wq_buf_size = ucmd.wq_buf_size; wq->rx_object = INVALID_MANA_HANDLE; - err = mana_ib_gd_create_dma_region(mdev, wq->umem, &wq->gdma_region); + err = mana_ib_create_zero_offset_dma_region(mdev, wq->umem, &wq->gdma_region); if (err) { ibdev_dbg(&mdev->ib_dev, "Failed to create dma region for create wq, %d\n", @@ -55,7 +55,7 @@ struct ib_wq *mana_ib_create_wq(struct ib_pd *pd, } ibdev_dbg(&mdev->ib_dev, - "mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n", + "create_dma_region ret %d gdma_region 0x%llx\n", err, wq->gdma_region); /* WQ ID is returned at wq_create time, doesn't know the value yet */ |