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: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
Cc: Devesh Sharma <devesh.sharma@xxxxxxxxxxxx>
Signed-off-by: Shiraz, Saleem <shiraz.saleem@xxxxxxxxx>
---
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 23 +++++++++--------------
drivers/infiniband/hw/bnxt_re/qplib_res.c | 9 +++++----
2 files changed, 14 insertions(+), 18 deletions(-)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 1d7469e..ed7cb0b 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -3566,19 +3566,14 @@ static int fill_umem_pbl_tbl(struct ib_umem *umem, u64 *pbl_tbl_orig,
u64 *pbl_tbl = pbl_tbl_orig;
u64 paddr;
u64 page_mask = (1ULL << page_shift) - 1;
- int i, pages;
- struct scatterlist *sg;
- int entry;
-
- for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
- pages = sg_dma_len(sg) >> PAGE_SHIFT;
- for (i = 0; i < pages; i++) {
- paddr = sg_dma_address(sg) + (i << PAGE_SHIFT);
- if (pbl_tbl == pbl_tbl_orig)
- *pbl_tbl++ = paddr & ~page_mask;
- else if ((paddr & page_mask) == 0)
- *pbl_tbl++ = paddr;
- }
+ struct sg_dma_page_iter sg_iter;
+
+ for_each_sg_dma_page(umem->sg_head.sgl, &sg_iter, umem->nmap, 0) {
+ paddr = sg_page_iter_dma_address(&sg_iter);
+ if (pbl_tbl == pbl_tbl_orig)
+ *pbl_tbl++ = paddr & ~page_mask;
+ else if ((paddr & page_mask) == 0)
+ *pbl_tbl++ = paddr;
}
return pbl_tbl - pbl_tbl_orig;
}
@@ -3641,7 +3636,7 @@ struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length,
goto free_umem;
}
- page_shift = umem->page_shift;
+ page_shift = PAGE_SHIFT;
if (!bnxt_re_page_size_ok(page_shift)) {
dev_err(rdev_to_dev(rdev), "umem page size unsupported!");
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.c b/drivers/infiniband/hw/bnxt_re/qplib_res.c
index c8502c2..c8478c1 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.c
@@ -85,7 +85,7 @@ static void __free_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
static int __alloc_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
struct scatterlist *sghead, u32 pages, u32 pg_size)
{
- struct scatterlist *sg;
+ struct sg_dma_page_iter sg_iter;
bool is_umem = false;
int i;
@@ -116,12 +116,13 @@ static int __alloc_pbl(struct pci_dev *pdev, struct bnxt_qplib_pbl *pbl,
} else {
i = 0;
is_umem = true;
- for_each_sg(sghead, sg, pages, i) {
- pbl->pg_map_arr[i] = sg_dma_address(sg);
- pbl->pg_arr[i] = sg_virt(sg);
+ for_each_sg_dma_page(sghead, &sg_iter, pages, 0) {
+ pbl->pg_map_arr[i] = sg_page_iter_dma_address(&sg_iter);
+ pbl->pg_arr[i] = NULL;
if (!pbl->pg_arr[i])
goto fail;
+ i++;
pbl->pg_count++;
}
}
--
1.8.3.1
