From: "Shiraz, Saleem" <shiraz.saleem@xxxxxxxxx>
Use the for_each_sg_dma_page iterator variant to walk the umem
DMA-mapped SGL and get the page DMA address. This avoids the extra
loop to iterate pages in the SGE when for_each_sg iterator is used.
Additionally, purge umem->page_shift usage in the driver
as its only relevant for ODP MRs. Use system page size and
shift instead.
Cc: Michal Kalderon <Michal.Kalderon@xxxxxxxxxx>
Cc: Ariel Elior <Ariel.Elior@xxxxxxxxxx>
Signed-off-by: Shiraz, Saleem <shiraz.saleem@xxxxxxxxx>
---
drivers/infiniband/hw/qedr/verbs.c | 68 +++++++++++++++++---------------------
1 file changed, 31 insertions(+), 37 deletions(-)
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 989f086..936e5e2 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -636,13 +636,12 @@ static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem,
struct qedr_pbl *pbl,
struct qedr_pbl_info *pbl_info, u32 pg_shift)
{
- int shift, pg_cnt, pages, pbe_cnt, total_num_pbes = 0;
+ int pbe_cnt, total_num_pbes = 0;
u32 fw_pg_cnt, fw_pg_per_umem_pg;
struct qedr_pbl *pbl_tbl;
- struct scatterlist *sg;
+ struct sg_dma_page_iter sg_iter;
struct regpair *pbe;
u64 pg_addr;
- int entry;
if (!pbl_info->num_pbes)
return;
@@ -663,38 +662,33 @@ static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem,
pbe_cnt = 0;
- shift = umem->page_shift;
-
- fw_pg_per_umem_pg = BIT(umem->page_shift - pg_shift);
-
- for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
- pages = sg_dma_len(sg) >> shift;
- pg_addr = sg_dma_address(sg);
- for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) {
- for (fw_pg_cnt = 0; fw_pg_cnt < fw_pg_per_umem_pg;) {
- pbe->lo = cpu_to_le32(pg_addr);
- pbe->hi = cpu_to_le32(upper_32_bits(pg_addr));
-
- pg_addr += BIT(pg_shift);
- pbe_cnt++;
- total_num_pbes++;
- pbe++;
-
- if (total_num_pbes == pbl_info->num_pbes)
- return;
-
- /* If the given pbl is full storing the pbes,
- * move to next pbl.
- */
- if (pbe_cnt ==
- (pbl_info->pbl_size / sizeof(u64))) {
- pbl_tbl++;
- pbe = (struct regpair *)pbl_tbl->va;
- pbe_cnt = 0;
- }
+ fw_pg_per_umem_pg = BIT(PAGE_SHIFT - pg_shift);
+
+ for_each_sg_dma_page(umem->sg_head.sgl, &sg_iter, umem->nmap, 0) {
+ pg_addr = sg_page_iter_dma_address(&sg_iter);
+ for (fw_pg_cnt = 0; fw_pg_cnt < fw_pg_per_umem_pg;) {
+ pbe->lo = cpu_to_le32(pg_addr);
+ pbe->hi = cpu_to_le32(upper_32_bits(pg_addr));
+
+ pg_addr += BIT(pg_shift);
+ pbe_cnt++;
+ total_num_pbes++;
+ pbe++;
- fw_pg_cnt++;
+ if (total_num_pbes == pbl_info->num_pbes)
+ return;
+
+ /* If the given pbl is full storing the pbes,
+ * move to next pbl.
+ */
+ if (pbe_cnt ==
+ (pbl_info->pbl_size / sizeof(u64))) {
+ pbl_tbl++;
+ pbe = (struct regpair *)pbl_tbl->va;
+ pbe_cnt = 0;
}
+
+ fw_pg_cnt++;
}
}
}
@@ -755,7 +749,7 @@ static inline int qedr_init_user_queue(struct ib_udata *udata,
}
fw_pages = ib_umem_page_count(q->umem) <<
- (q->umem->page_shift - FW_PAGE_SHIFT);
+ (PAGE_SHIFT - FW_PAGE_SHIFT);
rc = qedr_prepare_pbl_tbl(dev, &q->pbl_info, fw_pages, 0);
if (rc)
@@ -1471,7 +1465,7 @@ struct ib_srq *qedr_create_srq(struct ib_pd *ibpd,
page_cnt = srq->usrq.pbl_info.num_pbes;
pbl_base_addr = srq->usrq.pbl_tbl->pa;
phy_prod_pair_addr = hw_srq->phy_prod_pair_addr;
- page_size = BIT(srq->usrq.umem->page_shift);
+ page_size = PAGE_SIZE;
} else {
struct qed_chain *pbl;
@@ -2723,7 +2717,7 @@ struct ib_mr *qedr_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
goto err1;
qedr_populate_pbls(dev, mr->umem, mr->info.pbl_table,
- &mr->info.pbl_info, mr->umem->page_shift);
+ &mr->info.pbl_info, PAGE_SHIFT);
rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
if (rc) {
@@ -2744,7 +2738,7 @@ struct ib_mr *qedr_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
mr->hw_mr.pbl_ptr = mr->info.pbl_table[0].pa;
mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered;
mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size);
- mr->hw_mr.page_size_log = mr->umem->page_shift;
+ mr->hw_mr.page_size_log = PAGE_SHIFT;
mr->hw_mr.fbo = ib_umem_offset(mr->umem);
mr->hw_mr.length = len;
mr->hw_mr.vaddr = usr_addr;
--
1.8.3.1
