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Commit 7748e499 authored by Shiraz Saleem's avatar Shiraz Saleem Committed by Doug Ledford
Browse files

i40iw: Enable level-1 PBL for fast memory registration 



Set the chunk_size to enable level-1 PBL support when the fast memory
page count is more than one.

Signed-off-by: default avatarShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: default avatarFaisal Latif <faisal.latif@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 0477e181

drivers/infiniband/hw/i40iw/i40iw.h

+1 −0
Original line number Diff line number Diff line
@@ -114,6 +114,7 @@ 
#define IW_HMC_OBJ_TYPE_NUM ARRAY_SIZE(iw_hmc_obj_types)

#define IW_CFG_FPM_QP_COUNT		32768

#define I40IW_MAX_PAGES_PER_FMR		512

#define I40IW_MIN_PAGES_PER_FMR		1



#define I40IW_MTU_TO_MSS		40

#define I40IW_DEFAULT_MSS		1460

drivers/infiniband/hw/i40iw/i40iw_verbs.c

+5 −0
Original line number Diff line number Diff line
@@ -2150,6 +2150,7 @@ static int i40iw_post_send(struct ib_qp *ibqp, 
			struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;

			struct i40iw_fast_reg_stag_info info;



			memset(&info, 0, sizeof(info));

			info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;

			info.access_rights |= i40iw_get_user_access(flags);

			info.stag_key = reg_wr(ib_wr)->key & 0xff;
@@ -2159,10 +2160,14 @@ static int i40iw_post_send(struct ib_qp *ibqp, 
			info.addr_type = I40IW_ADDR_TYPE_VA_BASED;

			info.va = (void *)(uintptr_t)iwmr->ibmr.iova;

			info.total_len = iwmr->ibmr.length;

			info.reg_addr_pa = *(u64 *)palloc->level1.addr;

			info.first_pm_pbl_index = palloc->level1.idx;

			info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;

			info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED;



			if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR)

				info.chunk_size = 1;



			if (page_shift == 21)

				info.page_size = 1; /* 2M page */