Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932412AbXJPPb2 (ORCPT ); Tue, 16 Oct 2007 11:31:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932401AbXJPPbT (ORCPT ); Tue, 16 Oct 2007 11:31:19 -0400 Received: from mtagate7.de.ibm.com ([195.212.29.156]:11051 "EHLO mtagate7.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932419AbXJPPbR (ORCPT ); Tue, 16 Oct 2007 11:31:17 -0400 From: Joachim Fenkes To: "LinuxPPC-Dev" , LKML , "OF-General" , "OF-EWG" Subject: [PATCH 4/5] IB/ehca: Change meaning of hca_cap_mr_pgsize User-Agent: KMail/1.9.1 Cc: Roland Dreier , "Hoang-Nam Nguyen" , Christoph Raisch , Stefan Roscher References: <200710161722.29144.fenkes@de.ibm.com> In-Reply-To: <200710161722.29144.fenkes@de.ibm.com> MIME-Version: 1.0 Content-Disposition: inline X-Length: 1982 Date: Tue, 16 Oct 2007 17:31:14 +0200 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200710161731.14577.fenkes@de.ibm.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6146 Lines: 159 ehca_shca.hca_cap_mr_pgsize now contains all supported page sizes ORed together. This makes some checks easier to code and understand, plus we can return this value verbatim in query_hca(), fixing a problem with SRP (reported by Anton Blanchard -- thanks!). Signed-off-by: Joachim Fenkes --- drivers/infiniband/hw/ehca/ehca_classes.h | 1 - drivers/infiniband/hw/ehca/ehca_hca.c | 1 + drivers/infiniband/hw/ehca/ehca_main.c | 18 ++++++++++++- drivers/infiniband/hw/ehca/ehca_mrmw.c | 38 ++++++++++++++-------------- 4 files changed, 36 insertions(+), 22 deletions(-) diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h index 0f7a55d..365bc5d 100644 --- a/drivers/infiniband/hw/ehca/ehca_classes.h +++ b/drivers/infiniband/hw/ehca/ehca_classes.h @@ -323,7 +323,6 @@ extern int ehca_static_rate; extern int ehca_port_act_time; extern int ehca_use_hp_mr; extern int ehca_scaling_code; -extern int ehca_mr_largepage; struct ipzu_queue_resp { u32 qe_size; /* queue entry size */ diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c index 4aa3ffa..15806d1 100644 --- a/drivers/infiniband/hw/ehca/ehca_hca.c +++ b/drivers/infiniband/hw/ehca/ehca_hca.c @@ -77,6 +77,7 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props) } memset(props, 0, sizeof(struct ib_device_attr)); + props->page_size_cap = shca->hca_cap_mr_pgsize; props->fw_ver = rblock->hw_ver; props->max_mr_size = rblock->max_mr_size; props->vendor_id = rblock->vendor_id >> 8; diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c index 403467f..d477dc3 100644 --- a/drivers/infiniband/hw/ehca/ehca_main.c +++ b/drivers/infiniband/hw/ehca/ehca_main.c @@ -260,13 +260,20 @@ static struct cap_descr { { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, }; -int ehca_sense_attributes(struct ehca_shca *shca) +static int ehca_sense_attributes(struct ehca_shca *shca) { int i, ret = 0; u64 h_ret; struct hipz_query_hca *rblock; struct hipz_query_port *port; + static const u32 pgsize_map[] = { + HCA_CAP_MR_PGSIZE_4K, 0x1000, + HCA_CAP_MR_PGSIZE_64K, 0x10000, + HCA_CAP_MR_PGSIZE_1M, 0x100000, + HCA_CAP_MR_PGSIZE_16M, 0x1000000, + }; + rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); if (!rblock) { ehca_gen_err("Cannot allocate rblock memory."); @@ -329,8 +336,15 @@ int ehca_sense_attributes(struct ehca_shca *shca) if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) ehca_gen_dbg(" %s", hca_cap_descr[i].descr); - shca->hca_cap_mr_pgsize = rblock->memory_page_size_supported; + /* translate supported MR page sizes; always support 4K */ + shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; + if (ehca_mr_largepage) { /* support extra sizes only if enabled */ + for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) + if (rblock->memory_page_size_supported & pgsize_map[i]) + shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; + } + /* query max MTU from first port -- it's the same for all ports */ port = (struct hipz_query_port *)rblock; h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); if (h_ret != H_SUCCESS) { diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c index b9a788c..bb97915 100644 --- a/drivers/infiniband/hw/ehca/ehca_mrmw.c +++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c @@ -79,9 +79,7 @@ static u32 ehca_encode_hwpage_size(u32 pgsize) static u64 ehca_get_max_hwpage_size(struct ehca_shca *shca) { - if (shca->hca_cap_mr_pgsize & HCA_CAP_MR_PGSIZE_16M) - return EHCA_MR_PGSIZE16M; - return EHCA_MR_PGSIZE4K; + return 1UL << ilog2(shca->hca_cap_mr_pgsize); } static struct ehca_mr *ehca_mr_new(void) @@ -288,7 +286,7 @@ struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, container_of(pd->device, struct ehca_shca, ib_device); struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); struct ehca_mr_pginfo pginfo; - int ret; + int ret, page_shift; u32 num_kpages; u32 num_hwpages; u64 hwpage_size; @@ -343,19 +341,20 @@ struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, /* determine number of MR pages */ num_kpages = NUM_CHUNKS((virt % PAGE_SIZE) + length, PAGE_SIZE); /* select proper hw_pgsize */ - if (ehca_mr_largepage && - (shca->hca_cap_mr_pgsize & HCA_CAP_MR_PGSIZE_16M)) { - int page_shift = PAGE_SHIFT; - if (e_mr->umem->hugetlb) { - /* determine page_shift, clamp between 4K and 16M */ - page_shift = (fls64(length - 1) + 3) & ~3; - page_shift = min(max(page_shift, EHCA_MR_PGSHIFT4K), - EHCA_MR_PGSHIFT16M); - } - hwpage_size = 1UL << page_shift; - } else - hwpage_size = EHCA_MR_PGSIZE4K; /* ehca1 only supports 4k */ - ehca_dbg(pd->device, "hwpage_size=%lx", hwpage_size); + page_shift = PAGE_SHIFT; + if (e_mr->umem->hugetlb) { + /* determine page_shift, clamp between 4K and 16M */ + page_shift = (fls64(length - 1) + 3) & ~3; + page_shift = min(max(page_shift, EHCA_MR_PGSHIFT4K), + EHCA_MR_PGSHIFT16M); + } + hwpage_size = 1UL << page_shift; + + /* now that we have the desired page size, shift until it's + * supported, too. 4K is always supported, so this terminates. + */ + while (!(hwpage_size & shca->hca_cap_mr_pgsize)) + hwpage_size >>= 4; reg_user_mr_fallback: num_hwpages = NUM_CHUNKS((virt % hwpage_size) + length, hwpage_size); @@ -801,8 +800,9 @@ struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd, ib_fmr = ERR_PTR(-EINVAL); goto alloc_fmr_exit0; } - hw_pgsize = ehca_get_max_hwpage_size(shca); - if ((1 << fmr_attr->page_shift) != hw_pgsize) { + + hw_pgsize = 1 << fmr_attr->page_shift; + if (!(hw_pgsize & shca->hca_cap_mr_pgsize)) { ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x", fmr_attr->page_shift); ib_fmr = ERR_PTR(-EINVAL); -- 1.5.2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/