From 137d264c6f63f5b57200b8becb00d7cc58163c05 Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Tue, 5 Jul 2022 18:08:09 -0500 Subject: RDMA/irdma: Add 2 level PBLE support for FMR Level 2 Physical Buffer List Entry (PBLE) is currently not supported for Fast MRs which limits memory registrations to 256K pages. Adapt irdma_set_page and irdma_alloc_mr to allow for 2 level PBLEs. Link: https://lore.kernel.org/r/20220705230815.265-2-shiraz.saleem@intel.com Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/irdma/main.h | 2 +- drivers/infiniband/hw/irdma/verbs.c | 14 +++++++++++--- 2 files changed, 12 insertions(+), 4 deletions(-) (limited to 'drivers/infiniband/hw/irdma') diff --git a/drivers/infiniband/hw/irdma/main.h b/drivers/infiniband/hw/irdma/main.h index ef862bced20f..65e966ad3453 100644 --- a/drivers/infiniband/hw/irdma/main.h +++ b/drivers/infiniband/hw/irdma/main.h @@ -85,7 +85,7 @@ extern struct auxiliary_driver i40iw_auxiliary_drv; #define IRDMA_NO_QSET 0xffff #define IW_CFG_FPM_QP_COUNT 32768 -#define IRDMA_MAX_PAGES_PER_FMR 512 +#define IRDMA_MAX_PAGES_PER_FMR 262144 #define IRDMA_MIN_PAGES_PER_FMR 1 #define IRDMA_CQP_COMPL_RQ_WQE_FLUSHED 2 #define IRDMA_CQP_COMPL_SQ_WQE_FLUSHED 3 diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c index c4412ece5a6d..0f5856bd1dde 100644 --- a/drivers/infiniband/hw/irdma/verbs.c +++ b/drivers/infiniband/hw/irdma/verbs.c @@ -2605,7 +2605,7 @@ static struct ib_mr *irdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, palloc = &iwpbl->pble_alloc; iwmr->page_cnt = max_num_sg; err_code = irdma_get_pble(iwdev->rf->pble_rsrc, palloc, iwmr->page_cnt, - true); + false); if (err_code) goto err_get_pble; @@ -2641,8 +2641,16 @@ static int irdma_set_page(struct ib_mr *ibmr, u64 addr) if (unlikely(iwmr->npages == iwmr->page_cnt)) return -ENOMEM; - pbl = palloc->level1.addr; - pbl[iwmr->npages++] = addr; + if (palloc->level == PBLE_LEVEL_2) { + struct irdma_pble_info *palloc_info = + palloc->level2.leaf + (iwmr->npages >> PBLE_512_SHIFT); + + palloc_info->addr[iwmr->npages & (PBLE_PER_PAGE - 1)] = addr; + } else { + pbl = palloc->level1.addr; + pbl[iwmr->npages] = addr; + } + iwmr->npages++; return 0; } -- cgit v1.2.3