From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D35AC433B4 for ; Wed, 5 May 2021 12:11:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C44E961176 for ; Wed, 5 May 2021 12:11:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232577AbhEEMMM (ORCPT ); Wed, 5 May 2021 08:12:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:53564 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233002AbhEEMJy (ORCPT ); Wed, 5 May 2021 08:09:54 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A164961176; Wed, 5 May 2021 12:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620216524; bh=6zNtDsAgB5bMSkA8ViPnx8VnboOtKU7dasZ2/fYghwc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WcYuEXIof04bskZQQG04j6PvOkctlXXtxXmYKgrVFxSnriaqU+WeZEkvBDZEa5R4n Rr3hKXxVBJaLRC7Jmo0t0auUzwpwyQ01B+m1AWV59AV4VJ7fr2H7BuKbIDuTSSGAYC zkAk5e/Dbu+4zlQQJ0YPkUdPkSuAVuMAm897+YwI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Hellwig , Jianxiong Gao , Konrad Rzeszutek Wilk Subject: [PATCH 5.11 14/31] swiotlb: add a IO_TLB_SIZE define Date: Wed, 5 May 2021 14:06:03 +0200 Message-Id: <20210505112327.128659745@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210505112326.672439569@linuxfoundation.org> References: <20210505112326.672439569@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jianxiong Gao commit: b5d7ccb7aac3895c2138fe0980a109116ce15eff Add a new IO_TLB_SIZE define instead open coding it using IO_TLB_SHIFT all over. Signed-off-by: Christoph Hellwig Acked-by: Jianxiong Gao Tested-by: Jianxiong Gao Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Jianxiong Gao Signed-off-by: Greg Kroah-Hartman --- include/linux/swiotlb.h | 1 + kernel/dma/swiotlb.c | 12 ++++++------ 2 files changed, 7 insertions(+), 6 deletions(-) --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -29,6 +29,7 @@ enum swiotlb_force { * controllable. */ #define IO_TLB_SHIFT 11 +#define IO_TLB_SIZE (1 << IO_TLB_SHIFT) /* default to 64MB */ #define IO_TLB_DEFAULT_SIZE (64UL<<20) --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -491,20 +491,20 @@ phys_addr_t swiotlb_tbl_map_single(struc tbl_dma_addr &= mask; - offset_slots = ALIGN(tbl_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + offset_slots = ALIGN(tbl_dma_addr, IO_TLB_SIZE) >> IO_TLB_SHIFT; /* * Carefully handle integer overflow which can occur when mask == ~0UL. */ max_slots = mask + 1 - ? ALIGN(mask + 1, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT + ? ALIGN(mask + 1, IO_TLB_SIZE) >> IO_TLB_SHIFT : 1UL << (BITS_PER_LONG - IO_TLB_SHIFT); /* * For mappings greater than or equal to a page, we limit the stride * (and hence alignment) to a page size. */ - nslots = ALIGN(alloc_size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + nslots = ALIGN(alloc_size, IO_TLB_SIZE) >> IO_TLB_SHIFT; if (alloc_size >= PAGE_SIZE) stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT)); else @@ -598,7 +598,7 @@ void swiotlb_tbl_unmap_single(struct dev enum dma_data_direction dir, unsigned long attrs) { unsigned long flags; - int i, count, nslots = ALIGN(alloc_size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + int i, count, nslots = ALIGN(alloc_size, IO_TLB_SIZE) >> IO_TLB_SHIFT; int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT; phys_addr_t orig_addr = io_tlb_orig_addr[index]; @@ -649,7 +649,7 @@ void swiotlb_tbl_sync_single(struct devi if (orig_addr == INVALID_PHYS_ADDR) return; - orig_addr += (unsigned long)tlb_addr & ((1 << IO_TLB_SHIFT) - 1); + orig_addr += (unsigned long)tlb_addr & (IO_TLB_SIZE - 1); switch (target) { case SYNC_FOR_CPU: @@ -707,7 +707,7 @@ dma_addr_t swiotlb_map(struct device *de size_t swiotlb_max_mapping_size(struct device *dev) { - return ((size_t)1 << IO_TLB_SHIFT) * IO_TLB_SEGSIZE; + return ((size_t)IO_TLB_SIZE) * IO_TLB_SEGSIZE; } bool is_swiotlb_active(void)