diff options
Diffstat (limited to 'drivers/infiniband/hw/mana/mr.c')
| -rw-r--r-- | drivers/infiniband/hw/mana/mr.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c index 887b09dd86e7..3a047f8c9fc5 100644 --- a/drivers/infiniband/hw/mana/mr.c +++ b/drivers/infiniband/hw/mana/mr.c @@ -8,6 +8,8 @@ #define VALID_MR_FLAGS \ (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ) +#define VALID_DMA_MR_FLAGS (IB_ACCESS_LOCAL_WRITE) + static enum gdma_mr_access_flags mana_ib_verbs_to_gdma_access_flags(int access_flags) { @@ -39,6 +41,8 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev *dev, struct mana_ib_mr *mr, req.mr_type = mr_params->mr_type; switch (mr_params->mr_type) { + case GDMA_MR_TYPE_GPA: + break; case GDMA_MR_TYPE_GVA: req.gva.dma_region_handle = mr_params->gva.dma_region_handle; req.gva.virtual_address = mr_params->gva.virtual_address; @@ -169,6 +173,38 @@ err_free: return ERR_PTR(err); } +struct ib_mr *mana_ib_get_dma_mr(struct ib_pd *ibpd, int access_flags) +{ + struct mana_ib_pd *pd = container_of(ibpd, struct mana_ib_pd, ibpd); + struct gdma_create_mr_params mr_params = {}; + struct ib_device *ibdev = ibpd->device; + struct mana_ib_dev *dev; + struct mana_ib_mr *mr; + int err; + + dev = container_of(ibdev, struct mana_ib_dev, ib_dev); + + if (access_flags & ~VALID_DMA_MR_FLAGS) + return ERR_PTR(-EINVAL); + + mr = kzalloc(sizeof(*mr), GFP_KERNEL); + if (!mr) + return ERR_PTR(-ENOMEM); + + mr_params.pd_handle = pd->pd_handle; + mr_params.mr_type = GDMA_MR_TYPE_GPA; + + err = mana_ib_gd_create_mr(dev, mr, &mr_params); + if (err) + goto err_free; + + return &mr->ibmr; + +err_free: + kfree(mr); + return ERR_PTR(err); +} + int mana_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) { struct mana_ib_mr *mr = container_of(ibmr, struct mana_ib_mr, ibmr); |