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Commit 457fe7b8 authored by Steve Wise's avatar Steve Wise Committed by Roland Dreier
Browse files

RDMA/cxgb3: Support version 5.0 firmware 



The 5.0 firmware now supports translating sgls in recv work requests,
so remove the host driver logic currently doing the translation.

Note: this change requires 5.0 firmware.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 7f049f2f

drivers/infiniband/hw/cxgb3/iwch_qp.c

+2 −19
Original line number Diff line number Diff line
@@ -208,36 +208,19 @@ static int iwch_sgl2pbl_map(struct iwch_dev *rhp, struct ib_sge *sg_list, 
static int iwch_build_rdma_recv(struct iwch_dev *rhp, union t3_wr *wqe,

				struct ib_recv_wr *wr)

{

	int i, err = 0;

	u32 pbl_addr[4];

	u8 page_size[4];

	int i;

	if (wr->num_sge > T3_MAX_SGE)

		return -EINVAL;

	err = iwch_sgl2pbl_map(rhp, wr->sg_list, wr->num_sge, pbl_addr,

			       page_size);

	if (err)

		return err;

	wqe->recv.pagesz[0] = page_size[0];

	wqe->recv.pagesz[1] = page_size[1];

	wqe->recv.pagesz[2] = page_size[2];

	wqe->recv.pagesz[3] = page_size[3];

	wqe->recv.num_sgle = cpu_to_be32(wr->num_sge);

	for (i = 0; i < wr->num_sge; i++) {

		wqe->recv.sgl[i].stag = cpu_to_be32(wr->sg_list[i].lkey);

		wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);



		/* to in the WQE == the offset into the page */

		wqe->recv.sgl[i].to = cpu_to_be64(((u32) wr->sg_list[i].addr) %

				(1UL << (12 + page_size[i])));



		/* pbl_addr is the adapters address in the PBL */

		wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]);

		wqe->recv.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr);

	}

	for (; i < T3_MAX_SGE; i++) {

		wqe->recv.sgl[i].stag = 0;

		wqe->recv.sgl[i].len = 0;

		wqe->recv.sgl[i].to = 0;

		wqe->recv.pbl_addr[i] = 0;

	}

	return 0;

}