From patchwork Sat Mar 14 11:55:33 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 6233951 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Original-To: patchwork-linux-crypto@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BFE9CBF4A7 for ; Fri, 17 Apr 2015 14:38:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E24F6202E5 for ; Fri, 17 Apr 2015 14:38:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 383D420306 for ; Fri, 17 Apr 2015 14:38:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966143AbbDQOYJ (ORCPT ); Fri, 17 Apr 2015 10:24:09 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:41712 "EHLO mailhub1.si.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965167AbbDQOYB (ORCPT ); Fri, 17 Apr 2015 10:24:01 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 3DCD91C825B; Fri, 17 Apr 2015 16:24:00 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from mailhub1.si.c-s.fr ([192.168.12.234]) by localhost (mailhub1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Y3zmD1JdOnE1; Fri, 17 Apr 2015 16:24:00 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 129B81C8251; Fri, 17 Apr 2015 16:24:00 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 00572C73C5; Fri, 17 Apr 2015 16:24:00 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id hzRcgGCB-qSo; Fri, 17 Apr 2015 16:23:59 +0200 (CEST) Received: from PO10863.localdomain (unknown [10.25.205.191]) by messagerie.si.c-s.fr (Postfix) with ESMTP id CA0C4C73C8; Fri, 17 Apr 2015 16:23:59 +0200 (CEST) Received: by localhost.localdomain (Postfix, from userid 0) id A79D21A242C; Fri, 17 Apr 2015 16:23:59 +0200 (CEST) From: Christophe Leroy Date: Sat, 14 Mar 2015 12:55:33 +0100 Subject: [PATCH v3 06/17] crypto: talitos - helper function for ptr len To: Kim Phillips , Herbert Xu , David S Miller Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org Message-Id: <20150417142359.A79D21A242C@localhost.localdomain> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00, DATE_IN_PAST_96_XX, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a helper function for reads and writes of the len param of the talitos descriptor. This will help implement SEC1 later. Signed-off-by: Christophe Leroy --- drivers/crypto/talitos.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 81e5636..bca6ded 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -61,6 +61,16 @@ static void to_talitos_ptr(struct talitos_ptr *ptr, dma_addr_t dma_addr) ptr->eptr = upper_32_bits(dma_addr); } +static void to_talitos_ptr_len(struct talitos_ptr *ptr, unsigned short len) +{ + ptr->len = cpu_to_be16(len); +} + +static unsigned short from_talitos_ptr_len(struct talitos_ptr *ptr) +{ + return be16_to_cpu(ptr->len); +} + static void to_talitos_ptr_extent_clear(struct talitos_ptr *ptr) { ptr->j_extent = 0; @@ -76,7 +86,7 @@ static void map_single_talitos_ptr(struct device *dev, { dma_addr_t dma_addr = dma_map_single(dev, data, len, dir); - ptr->len = cpu_to_be16(len); + to_talitos_ptr_len(ptr, len); to_talitos_ptr(ptr, dma_addr); to_talitos_ptr_extent_clear(ptr); } @@ -89,7 +99,7 @@ static void unmap_single_talitos_ptr(struct device *dev, enum dma_data_direction dir) { dma_unmap_single(dev, be32_to_cpu(ptr->ptr), - be16_to_cpu(ptr->len), dir); + from_talitos_ptr_len(ptr), dir); } static int reset_channel(struct device *dev, int ch) @@ -1375,7 +1385,7 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src, { int sg_count; - ptr->len = cpu_to_be16(len); + to_talitos_ptr_len(ptr, len); to_talitos_ptr_extent_clear(ptr); sg_count = talitos_map_sg(dev, src, edesc->src_nents ? : 1, dir, @@ -1405,7 +1415,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst, enum dma_data_direction dir, struct talitos_ptr *ptr, int sg_count) { - ptr->len = cpu_to_be16(len); + to_talitos_ptr_len(ptr, len); to_talitos_ptr_extent_clear(ptr); if (dir != DMA_NONE) @@ -1447,7 +1457,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc, /* cipher iv */ to_talitos_ptr(&desc->ptr[1], edesc->iv_dma); - desc->ptr[1].len = cpu_to_be16(ivsize); + to_talitos_ptr_len(&desc->ptr[1], ivsize); to_talitos_ptr_extent_clear(&desc->ptr[1]); /* cipher key */ @@ -1539,11 +1549,11 @@ static void common_nonsnoop_hash_unmap(struct device *dev, unmap_sg_talitos_ptr(dev, req_ctx->psrc, NULL, 0, edesc); /* When using hashctx-in, must unmap it. */ - if (edesc->desc.ptr[1].len) + if (from_talitos_ptr_len(&edesc->desc.ptr[1])) unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], DMA_TO_DEVICE); - if (edesc->desc.ptr[2].len) + if (from_talitos_ptr_len(&edesc->desc.ptr[2])) unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE);