From patchwork Tue May 16 13:06:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 1782038 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=MB0iRfkI; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4QLGjQ3l0bz20dj for ; Tue, 16 May 2023 23:07:06 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233004AbjEPNHF (ORCPT ); Tue, 16 May 2023 09:07:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233459AbjEPNGl (ORCPT ); Tue, 16 May 2023 09:06:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8252F83FD for ; Tue, 16 May 2023 06:06:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E7CA3639F4 for ; Tue, 16 May 2023 13:06:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E60F9C4339B; Tue, 16 May 2023 13:06:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684242377; bh=wRv/0DMw0qtQY2afxzxBj1cYPhzy7UKWYzqgdSD7TWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MB0iRfkIdwMncgezYX5iojSXbVmIrYEks+RQWAuj4MB4scrX0N+L5g6fnI5dxrgRD WkIsCSAd2SlbQQa6FCaJL4wwXelxefQ0MNeJqGazEn8v5xJBwU9rg9dLYBjoTu92fK 10f/9xoR7l0vf8dNvjWVFcOCtP6GVZoT5fm0rOmRaPlYze17SGPesxj4+p5p1NyKFT 2EAVeFMDRwSaTdfmjUCmzQiFU52s3lSpHrbOyIBuYgBKIB7u6zYBvCzN3xxrLbU7kp kLiJ0GIRrtNofqhrdQ/LeB5mf5+b9lmVpmf+wR8pWnMdaaOXCDcKoZJPYGBKyO7t3U X4ZeJ/gtEy/pA== From: Damien Le Moal To: linux-ide@vger.kernel.org, Ondrej Zary Cc: Sergey Shtylyov Subject: [PATCH 06/13] ata: pata_parport: Fix epia module code indentation and style Date: Tue, 16 May 2023 22:06:04 +0900 Message-Id: <20230516130611.109932-7-dlemoal@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230516130611.109932-1-dlemoal@kernel.org> References: <20230516130611.109932-1-dlemoal@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org Fix the header, indentation and coding style in the epia pata parport protocol module to suppress warnings from smatch and other static code analyzers. No functional changes. Signed-off-by: Damien Le Moal --- drivers/ata/pata_parport/epia.c | 442 +++++++++++++++++--------------- 1 file changed, 230 insertions(+), 212 deletions(-) diff --git a/drivers/ata/pata_parport/epia.c b/drivers/ata/pata_parport/epia.c index f6db2f79fe99..920e9f40d401 100644 --- a/drivers/ata/pata_parport/epia.c +++ b/drivers/ata/pata_parport/epia.c @@ -1,14 +1,13 @@ -/* - epia.c (c) 1997-8 Grant R. Guenther - Under the terms of the GNU General Public License. - - epia.c is a low-level protocol driver for Shuttle Technologies - EPIA parallel to IDE adapter chip. This device is now obsolete - and has been replaced with the EPAT chip, which is supported - by epat.c, however, some devices based on EPIA are still - available. - -*/ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * (c) 1997-1998 Grant R. Guenther + * + * epia.c is a low-level protocol driver for Shuttle Technologies + * EPIA parallel to IDE adapter chip. This device is now obsolete + * and has been replaced with the EPAT chip, which is supported + * by epat.c, however, some devices based on EPIA are still + * available. + */ #include #include @@ -19,255 +18,274 @@ #include #include "pata_parport.h" -/* mode codes: 0 nybble reads on port 1, 8-bit writes - 1 5/3 reads on ports 1 & 2, 8-bit writes - 2 8-bit reads and writes - 3 8-bit EPP mode - 4 16-bit EPP - 5 32-bit EPP -*/ - -#define j44(a,b) (((a>>4)&0x0f)+(b&0xf0)) -#define j53(a,b) (((a>>3)&0x1f)+((b<<4)&0xe0)) - -/* cont = 0 IDE register file - cont = 1 IDE control registers -*/ - +/* + * mode codes: 0 nybble reads on port 1, 8-bit writes + * 1 5/3 reads on ports 1 & 2, 8-bit writes + * 2 8-bit reads and writes + * 3 8-bit EPP mode + * 4 16-bit EPP + * 5 32-bit EPP + */ + +#define j44(a, b) (((a >> 4) & 0x0f) + (b & 0xf0)) +#define j53(a, b) (((a >> 3) & 0x1f) + ((b << 4) & 0xe0)) + +/* + * cont = 0 IDE register file + * cont = 1 IDE control registers + */ static int cont_map[2] = { 0, 0x80 }; static int epia_read_regr(struct pi_adapter *pi, int cont, int regr) - -{ int a, b, r; +{ + int a, b, r; regr += cont_map[cont]; - switch (pi->mode) { - - case 0: r = regr^0x39; - w0(r); w2(1); w2(3); w0(r); - a = r1(); w2(1); b = r1(); w2(4); - return j44(a,b); - - case 1: r = regr^0x31; - w0(r); w2(1); w0(r&0x37); - w2(3); w2(5); w0(r|0xf0); - a = r1(); b = r2(); w2(4); - return j53(a,b); - - case 2: r = regr^0x29; - w0(r); w2(1); w2(0X21); w2(0x23); - a = r0(); w2(4); - return a; - + switch (pi->mode) { + case 0: + r = regr ^ 0x39; + w0(r); w2(1); w2(3); w0(r); + a = r1(); w2(1); b = r1(); w2(4); + return j44(a, b); + case 1: + r = regr ^ 0x31; + w0(r); w2(1); w0(r & 0x37); + w2(3); w2(5); w0(r | 0xf0); + a = r1(); b = r2(); w2(4); + return j53(a, b); + case 2: + r = regr^0x29; + w0(r); w2(1); w2(0X21); w2(0x23); + a = r0(); w2(4); + return a; case 3: case 4: - case 5: w3(regr); w2(0x24); a = r4(); w2(4); - return a; + case 5: + w3(regr); w2(0x24); a = r4(); w2(4); + return a; + } - } - return -1; -} + return -1; +} static void epia_write_regr(struct pi_adapter *pi, int cont, int regr, int val) - -{ int r; +{ + int r; regr += cont_map[cont]; - switch (pi->mode) { - - case 0: - case 1: - case 2: r = regr^0x19; - w0(r); w2(1); w0(val); w2(3); w2(4); - break; - + switch (pi->mode) { + case 0: + case 1: + case 2: + r = regr ^ 0x19; + w0(r); w2(1); w0(val); w2(3); w2(4); + break; case 3: case 4: - case 5: r = regr^0x40; - w3(r); w4(val); w2(4); - break; - } + case 5: + r = regr ^ 0x40; + w3(r); w4(val); w2(4); + break; + } } -#define WR(r,v) epia_write_regr(pi,0,r,v) -#define RR(r) (epia_read_regr(pi,0,r)) - -/* The use of register 0x84 is entirely unclear - it seems to control - some EPP counters ... currently we know about 3 different block - sizes: the standard 512 byte reads and writes, 12 byte writes and - 2048 byte reads (the last two being used in the CDrom drivers. -*/ +#define WR(r, v) epia_write_regr(pi, 0, r, v) +#define RR(r) epia_read_regr(pi, 0, r) +/* + * The use of register 0x84 is entirely unclear - it seems to control + * some EPP counters ... currently we know about 3 different block + * sizes: the standard 512 byte reads and writes, 12 byte writes and + * 2048 byte reads (the last two being used in the CDrom drivers. + */ static void epia_connect(struct pi_adapter *pi) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - - w2(4); w0(0xa0); w0(0x50); w0(0xc0); w0(0x30); w0(0xa0); w0(0); - w2(1); w2(4); - if (pi->mode >= 3) { - w0(0xa); w2(1); w2(4); w0(0x82); w2(4); w2(0xc); w2(4); - w2(0x24); w2(0x26); w2(4); - } - WR(0x86,8); +{ + pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + + w2(4); w0(0xa0); w0(0x50); w0(0xc0); w0(0x30); w0(0xa0); w0(0); + w2(1); w2(4); + if (pi->mode >= 3) { + w0(0xa); w2(1); w2(4); w0(0x82); w2(4); w2(0xc); w2(4); + w2(0x24); w2(0x26); w2(4); + } + WR(0x86, 8); } static void epia_disconnect(struct pi_adapter *pi) - -{ /* WR(0x84,0x10); */ - w0(pi->saved_r0); - w2(1); w2(4); - w0(pi->saved_r0); - w2(pi->saved_r2); -} +{ + /* WR(0x84,0x10); */ + w0(pi->saved_r0); + w2(1); w2(4); + w0(pi->saved_r0); + w2(pi->saved_r2); +} static void epia_read_block(struct pi_adapter *pi, char *buf, int count) -{ int k, ph, a, b; - - switch (pi->mode) { - - case 0: w0(0x81); w2(1); w2(3); w0(0xc1); - ph = 1; - for (k=0;k 512) WR(0x84,3); +{ + int k, ph, a, b; + + switch (pi->mode) { + case 0: + w0(0x81); w2(1); w2(3); w0(0xc1); + ph = 1; + for (k = 0; k < count; k++) { + w2(2+ph); a = r1(); + w2(4+ph); b = r1(); + buf[k] = j44(a, b); + ph = 1 - ph; + } + w0(0); w2(4); + break; + case 1: + w0(0x91); w2(1); w0(0x10); w2(3); + w0(0x51); w2(5); w0(0xd1); + ph = 1; + for (k = 0; k < count; k++) { + w2(4 + ph); + a = r1(); b = r2(); + buf[k] = j53(a, b); + ph = 1 - ph; + } + w0(0); w2(4); + break; + case 2: + w0(0x89); w2(1); w2(0x23); w2(0x21); + ph = 1; + for (k = 0; k < count; k++) { + w2(0x24 + ph); + buf[k] = r0(); + ph = 1 - ph; + } + w2(6); w2(4); + break; + case 3: + if (count > 512) + WR(0x84, 3); w3(0); w2(0x24); - for (k=0;k 512) WR(0x84,3); + for (k = 0; k < count; k++) + buf[k] = r4(); + w2(4); WR(0x84, 0); + break; + case 4: + if (count > 512) + WR(0x84, 3); w3(0); w2(0x24); - for (k=0;k 512) WR(0x84,3); + for (k = 0; k < count / 2; k++) + ((u16 *)buf)[k] = r4w(); + w2(4); WR(0x84, 0); + break; + case 5: + if (count > 512) + WR(0x84, 3); w3(0); w2(0x24); - for (k=0;kmode) { - - case 0: - case 1: - case 2: w0(0xa1); w2(1); w2(3); w2(1); w2(5); - ph = 0; last = 0x8000; - for (k=0;kmode) { + case 0: + case 1: + case 2: + w0(0xa1); w2(1); w2(3); w2(1); w2(5); + ph = 0; last = 0x8000; + for (k = 0; k < count; k++) { + d = buf[k]; + if (d != last) { + last = d; + w0(d); + } + w2(4 + ph); + ph = 1 - ph; + } + w2(7); w2(4); + break; + case 3: + if (count < 512) + WR(0x84, 1); w3(0x40); - for (k=0;kdev, "epia: port 0x%x, mode %d, test=(%d,%d,%d)\n", - pi->port, pi->mode, e[0], e[1], f); - - return (e[0] && e[1]) || f; + pi->port, pi->mode, e[0], e[1], f); + return (e[0] && e[1]) || f; } static void epia_log_adapter(struct pi_adapter *pi) +{ + char *mode[6] = { "4-bit", "5/3", "8-bit", "EPP-8", "EPP-16", "EPP-32"}; -{ char *mode_string[6] = {"4-bit","5/3","8-bit", - "EPP-8","EPP-16","EPP-32"}; - - dev_info(&pi->dev, "Shuttle EPIA at 0x%x, mode %d (%s), delay %d\n", - pi->port, pi->mode, mode_string[pi->mode], pi->delay); + dev_info(&pi->dev, + "Shuttle EPIA at 0x%x, mode %d (%s), delay %d\n", + pi->port, pi->mode, mode[pi->mode], pi->delay); } static struct pi_protocol epia = {