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[WIP,05/43] cxgb3: Support ib_alloc_mr verb

Message ID 1437548143-24893-6-git-send-email-sagig@mellanox.com (mailing list archive)
State RFC
Headers show

Commit Message

Sagi Grimberg July 22, 2015, 6:55 a.m. UTC 
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
---
 drivers/infiniband/hw/cxgb3/iwch_provider.c | 53 +++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
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Patch

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index b1b7323..d0e9e2d 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -796,6 +796,58 @@  static int iwch_dealloc_mw(struct ib_mw *mw)
 	return 0;
 }
 
+static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
+				   enum ib_mr_type mr_type,
+				   u32 max_entries,
+				   u32 flags)
+{
+	struct iwch_dev *rhp;
+	struct iwch_pd *php;
+	struct iwch_mr *mhp;
+	u32 mmid;
+	u32 stag = 0;
+	int ret = 0;
+
+	if (mr_type != IB_MR_TYPE_FAST_REG || flags)
+		return ERR_PTR(-EINVAL);
+
+	php = to_iwch_pd(pd);
+	rhp = php->rhp;
+	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
+	if (!mhp)
+		goto err;
+
+	mhp->rhp = rhp;
+	ret = iwch_alloc_pbl(mhp, max_entries);
+	if (ret)
+		goto err1;
+	mhp->attr.pbl_size = max_entries;
+	ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
+				 mhp->attr.pbl_size, mhp->attr.pbl_addr);
+	if (ret)
+		goto err2;
+	mhp->attr.pdid = php->pdid;
+	mhp->attr.type = TPT_NON_SHARED_MR;
+	mhp->attr.stag = stag;
+	mhp->attr.state = 1;
+	mmid = (stag) >> 8;
+	mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
+	if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
+		goto err3;
+
+	PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
+	return &(mhp->ibmr);
+err3:
+	cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
+		       mhp->attr.pbl_addr);
+err2:
+	iwch_free_pbl(mhp);
+err1:
+	kfree(mhp);
+err:
+	return ERR_PTR(ret);
+}
+
 static struct ib_mr *iwch_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth)
 {
 	struct iwch_dev *rhp;
@@ -1439,6 +1491,7 @@  int iwch_register_device(struct iwch_dev *dev)
 	dev->ibdev.alloc_mw = iwch_alloc_mw;
 	dev->ibdev.bind_mw = iwch_bind_mw;
 	dev->ibdev.dealloc_mw = iwch_dealloc_mw;
+	dev->ibdev.alloc_mr = iwch_alloc_mr;
 	dev->ibdev.alloc_fast_reg_mr = iwch_alloc_fast_reg_mr;
 	dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
 	dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;