From patchwork Mon Jun 19 19:56:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Colberg X-Patchwork-Id: 13284897 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03709EB64D9 for ; Mon, 19 Jun 2023 19:59:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229689AbjFST5i (ORCPT ); Mon, 19 Jun 2023 15:57:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229547AbjFST5h (ORCPT ); Mon, 19 Jun 2023 15:57:37 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39A6A106; Mon, 19 Jun 2023 12:57:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687204656; x=1718740656; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NjOonhgv6kRqKYJYsh94+vyKxX8XtR0LJuZNpxoQawo=; b=DY9SV6k49fJEnhMBBSRjcNtVDyZg6Oyvd9gbmF9pa8Dadi8lADXAsNlN 7IgwnvLAmyThnFwfz5FcfvNchOxKIRZ58RGwEblAXY3MlRGLDrdP55AB/ hHw0HuMYj2lIXRFGX+JyR0JGwPZYqRnGoLqMJj4iZpTVTZsqmB1vEYxZX kENF1CIPSLZvCJj6t+qfJPu+aqhMqmZemenI81WAs7yYF+7LNdo6HX8Mq 1MqfXQKglkyfl4X30KHNXUM9/UoP6FrOE9eBtV6ItXX5y4Y6C3UWuaPcI ncPpBAGRqtIZVo2eN9IuXke8DaA2KQx7jaLYWM6lbn9OMif9DUBCanHki A==; X-IronPort-AV: E=McAfee;i="6600,9927,10746"; a="446081600" X-IronPort-AV: E=Sophos;i="6.00,255,1681196400"; d="scan'208";a="446081600" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jun 2023 12:57:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10746"; a="713808239" X-IronPort-AV: E=Sophos;i="6.00,255,1681196400"; d="scan'208";a="713808239" Received: from scc823097.zsc7.intel.com ([10.148.153.229]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jun 2023 12:57:13 -0700 From: Peter Colberg To: hao.wu@intel.com, yilun.xu@intel.com, gregkh@linuxfoundation.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: aaron.j.grier@intel.com, tianfei.zhang@intel.com, russell.h.weight@intel.com, matthew.gerlach@linux.intel.com, marpagan@redhat.com, lgoncalv@redhat.com, Peter Colberg , Andy Shevchenko Subject: [PATCH v2] fpga: dfl: afu: use PFN_DOWN() and PFN_PHYS() helper macros Date: Mon, 19 Jun 2023 15:56:34 -0400 Message-Id: <20230619195634.11366-1-peter.colberg@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <2023061908-subscribe-persuader-9b9f@gregkh> References: <2023061908-subscribe-persuader-9b9f@gregkh> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org Replace all shifts by PAGE_SHIFT with PFN_DOWN() and PFN_PHYS() helper macros to convert between physical addresses and page frame numbers. These changes are cosmetic only; no functional changes. Suggested-by: Andy Shevchenko Signed-off-by: Peter Colberg Reviewed-by: Andy Shevchenko --- v2: - Comment in commit message that changes are cosmetic only --- drivers/fpga/dfl-afu-dma-region.c | 7 ++++--- drivers/fpga/dfl-afu-main.c | 5 +++-- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/fpga/dfl-afu-dma-region.c b/drivers/fpga/dfl-afu-dma-region.c index 02b60fde0430..e8d54cfbb301 100644 --- a/drivers/fpga/dfl-afu-dma-region.c +++ b/drivers/fpga/dfl-afu-dma-region.c @@ -10,6 +10,7 @@ */ #include +#include #include #include #include @@ -34,7 +35,7 @@ void afu_dma_region_init(struct dfl_feature_platform_data *pdata) static int afu_dma_pin_pages(struct dfl_feature_platform_data *pdata, struct dfl_afu_dma_region *region) { - int npages = region->length >> PAGE_SHIFT; + int npages = PFN_DOWN(region->length); struct device *dev = &pdata->dev->dev; int ret, pinned; @@ -82,7 +83,7 @@ static int afu_dma_pin_pages(struct dfl_feature_platform_data *pdata, static void afu_dma_unpin_pages(struct dfl_feature_platform_data *pdata, struct dfl_afu_dma_region *region) { - long npages = region->length >> PAGE_SHIFT; + long npages = PFN_DOWN(region->length); struct device *dev = &pdata->dev->dev; unpin_user_pages(region->pages, npages); @@ -101,7 +102,7 @@ static void afu_dma_unpin_pages(struct dfl_feature_platform_data *pdata, */ static bool afu_dma_check_continuous_pages(struct dfl_afu_dma_region *region) { - int npages = region->length >> PAGE_SHIFT; + int npages = PFN_DOWN(region->length); int i; for (i = 0; i < npages - 1; i++) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 7f621e96d3b8..048c9b418c8b 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -16,6 +16,7 @@ #include #include +#include #include #include @@ -816,7 +817,7 @@ static int afu_mmap(struct file *filp, struct vm_area_struct *vma) pdata = dev_get_platdata(&pdev->dev); - offset = vma->vm_pgoff << PAGE_SHIFT; + offset = PFN_PHYS(vma->vm_pgoff); ret = afu_mmio_region_get_by_offset(pdata, offset, size, ®ion); if (ret) return ret; @@ -837,7 +838,7 @@ static int afu_mmap(struct file *filp, struct vm_area_struct *vma) vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); return remap_pfn_range(vma, vma->vm_start, - (region.phys + (offset - region.offset)) >> PAGE_SHIFT, + PFN_DOWN(region.phys + (offset - region.offset)), size, vma->vm_page_prot); }