From 52f00dd3922810085f16cfc956a0c04671cb6513 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 23 Dec 2015 19:12:52 +0100 Subject: [PATCH] ehca: stop using struct ib_phys_buf And simplify the calling convention for full-memory registrations. Signed-off-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Reviewed-by: Jason Gunthorpe [core] Reviewed-by: Steve Wise Signed-off-by: Doug Ledford --- drivers/staging/rdma/ehca/ehca_classes.h | 5 +- drivers/staging/rdma/ehca/ehca_mrmw.c | 94 +++++++++++------------- 2 files changed, 46 insertions(+), 53 deletions(-) diff --git a/drivers/staging/rdma/ehca/ehca_classes.h b/drivers/staging/rdma/ehca/ehca_classes.h index bd45e0f3923f..e8c3387d7aaa 100644 --- a/drivers/staging/rdma/ehca/ehca_classes.h +++ b/drivers/staging/rdma/ehca/ehca_classes.h @@ -316,9 +316,8 @@ struct ehca_mr_pginfo { union { struct { /* type EHCA_MR_PGI_PHYS section */ - int num_phys_buf; - struct ib_phys_buf *phys_buf_array; - u64 next_buf; + u64 addr; + u16 size; } phy; struct { /* type EHCA_MR_PGI_USER section */ struct ib_umem *region; diff --git a/drivers/staging/rdma/ehca/ehca_mrmw.c b/drivers/staging/rdma/ehca/ehca_mrmw.c index c6e324522566..1814af72cf2a 100644 --- a/drivers/staging/rdma/ehca/ehca_mrmw.c +++ b/drivers/staging/rdma/ehca/ehca_mrmw.c @@ -1289,7 +1289,6 @@ int ehca_reg_internal_maxmr( u64 *iova_start; u64 size_maxmr; struct ehca_mr_pginfo pginfo; - struct ib_phys_buf ib_pbuf; u32 num_kpages; u32 num_hwpages; u64 hw_pgsize; @@ -1310,8 +1309,6 @@ int ehca_reg_internal_maxmr( /* register internal max-MR on HCA */ size_maxmr = ehca_mr_len; iova_start = (u64 *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)); - ib_pbuf.addr = 0; - ib_pbuf.size = size_maxmr; num_kpages = NUM_CHUNKS(((u64)iova_start % PAGE_SIZE) + size_maxmr, PAGE_SIZE); hw_pgsize = ehca_get_max_hwpage_size(shca); @@ -1323,8 +1320,8 @@ int ehca_reg_internal_maxmr( pginfo.num_kpages = num_kpages; pginfo.num_hwpages = num_hwpages; pginfo.hwpage_size = hw_pgsize; - pginfo.u.phy.num_phys_buf = 1; - pginfo.u.phy.phys_buf_array = &ib_pbuf; + pginfo.u.phy.addr = 0; + pginfo.u.phy.size = size_maxmr; ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, @@ -1620,57 +1617,54 @@ static int ehca_set_pagebuf_phys(struct ehca_mr_pginfo *pginfo, u32 number, u64 *kpage) { int ret = 0; - struct ib_phys_buf *pbuf; + u64 addr = pginfo->u.phy.addr; + u64 size = pginfo->u.phy.size; u64 num_hw, offs_hw; u32 i = 0; - /* loop over desired phys_buf_array entries */ - while (i < number) { - pbuf = pginfo->u.phy.phys_buf_array + pginfo->u.phy.next_buf; - num_hw = NUM_CHUNKS((pbuf->addr % pginfo->hwpage_size) + - pbuf->size, pginfo->hwpage_size); - offs_hw = (pbuf->addr & ~(pginfo->hwpage_size - 1)) / - pginfo->hwpage_size; - while (pginfo->next_hwpage < offs_hw + num_hw) { - /* sanity check */ - if ((pginfo->kpage_cnt >= pginfo->num_kpages) || - (pginfo->hwpage_cnt >= pginfo->num_hwpages)) { - ehca_gen_err("kpage_cnt >= num_kpages, " - "kpage_cnt=%llx num_kpages=%llx " - "hwpage_cnt=%llx " - "num_hwpages=%llx i=%x", - pginfo->kpage_cnt, - pginfo->num_kpages, - pginfo->hwpage_cnt, - pginfo->num_hwpages, i); - return -EFAULT; - } - *kpage = (pbuf->addr & ~(pginfo->hwpage_size - 1)) + - (pginfo->next_hwpage * pginfo->hwpage_size); - if ( !(*kpage) && pbuf->addr ) { - ehca_gen_err("pbuf->addr=%llx pbuf->size=%llx " - "next_hwpage=%llx", pbuf->addr, - pbuf->size, pginfo->next_hwpage); - return -EFAULT; - } - (pginfo->hwpage_cnt)++; - (pginfo->next_hwpage)++; - if (PAGE_SIZE >= pginfo->hwpage_size) { - if (pginfo->next_hwpage % - (PAGE_SIZE / pginfo->hwpage_size) == 0) - (pginfo->kpage_cnt)++; - } else - pginfo->kpage_cnt += pginfo->hwpage_size / - PAGE_SIZE; - kpage++; - i++; - if (i >= number) break; + num_hw = NUM_CHUNKS((addr % pginfo->hwpage_size) + size, + pginfo->hwpage_size); + offs_hw = (addr & ~(pginfo->hwpage_size - 1)) / pginfo->hwpage_size; + + while (pginfo->next_hwpage < offs_hw + num_hw) { + /* sanity check */ + if ((pginfo->kpage_cnt >= pginfo->num_kpages) || + (pginfo->hwpage_cnt >= pginfo->num_hwpages)) { + ehca_gen_err("kpage_cnt >= num_kpages, " + "kpage_cnt=%llx num_kpages=%llx " + "hwpage_cnt=%llx " + "num_hwpages=%llx i=%x", + pginfo->kpage_cnt, + pginfo->num_kpages, + pginfo->hwpage_cnt, + pginfo->num_hwpages, i); + return -EFAULT; } - if (pginfo->next_hwpage >= offs_hw + num_hw) { - (pginfo->u.phy.next_buf)++; - pginfo->next_hwpage = 0; + *kpage = (addr & ~(pginfo->hwpage_size - 1)) + + (pginfo->next_hwpage * pginfo->hwpage_size); + if ( !(*kpage) && addr ) { + ehca_gen_err("addr=%llx size=%llx " + "next_hwpage=%llx", addr, + size, pginfo->next_hwpage); + return -EFAULT; } + (pginfo->hwpage_cnt)++; + (pginfo->next_hwpage)++; + if (PAGE_SIZE >= pginfo->hwpage_size) { + if (pginfo->next_hwpage % + (PAGE_SIZE / pginfo->hwpage_size) == 0) + (pginfo->kpage_cnt)++; + } else + pginfo->kpage_cnt += pginfo->hwpage_size / + PAGE_SIZE; + kpage++; + i++; + if (i >= number) break; + } + if (pginfo->next_hwpage >= offs_hw + num_hw) { + pginfo->next_hwpage = 0; } + return ret; } -- GitLab