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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71737C433F5 for ; Sat, 5 Mar 2022 20:15:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232455AbiCEUQh (ORCPT ); Sat, 5 Mar 2022 15:16:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232344AbiCEUPf (ORCPT ); Sat, 5 Mar 2022 15:15:35 -0500 Received: from hosting.gsystem.sk (hosting.gsystem.sk [212.5.213.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 94D0B2558F; Sat, 5 Mar 2022 12:14:44 -0800 (PST) Received: from gsql.ggedos.sk (off-20.infotel.telecom.sk [212.5.213.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by hosting.gsystem.sk (Postfix) with ESMTPSA id C1D067A0645; Sat, 5 Mar 2022 21:14:40 +0100 (CET) From: Ondrej Zary To: Damien Le Moal Cc: Christoph Hellwig , Jens Axboe , Tim Waugh , linux-block@vger.kernel.org, linux-parport@lists.infradead.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 08/16] pata_parport: add fit3 protocol driver Date: Sat, 5 Mar 2022 21:14:03 +0100 Message-Id: <20220305201411.501-9-linux@zary.sk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220305201411.501-1-linux@zary.sk> References: <20220305201411.501-1-linux@zary.sk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add FIT TD-3000 protocol driver. Signed-off-by: Ondrej Zary --- drivers/ata/pata_parport/Kconfig | 12 ++ drivers/ata/pata_parport/Makefile | 1 + drivers/ata/pata_parport/fit3.c | 195 ++++++++++++++++++++++++++++++ 3 files changed, 208 insertions(+) create mode 100644 drivers/ata/pata_parport/fit3.c diff --git a/drivers/ata/pata_parport/Kconfig b/drivers/ata/pata_parport/Kconfig index db8edb288db4..a03c626e4e6c 100644 --- a/drivers/ata/pata_parport/Kconfig +++ b/drivers/ata/pata_parport/Kconfig @@ -85,3 +85,15 @@ config PATA_PARPORT_FIT2 you chose to build PATA_PARPORT support into your kernel, you may answer Y here to build in the protocol driver, otherwise you should answer M to build it as a loadable module. The module will be called ktti. + +config PATA_PARPORT_FIT3 + tristate "FIT TD-3000 protocol" + depends on PATA_PARPORT + help + This option enables support for the TD-3000 parallel port IDE + protocol from Fidelity International Technology. This protocol is + used in newer models of their portable disk, CD-ROM and PD/CD + devices. If you chose to build PATA_PARPORT support into your kernel, you + may answer Y here to build in the protocol driver, otherwise you + should answer M to build it as a loadable module. The module will be + called fit3. diff --git a/drivers/ata/pata_parport/Makefile b/drivers/ata/pata_parport/Makefile index 27d854f52ad7..140f6f142eaa 100644 --- a/drivers/ata/pata_parport/Makefile +++ b/drivers/ata/pata_parport/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_PATA_PARPORT_BPCK6) += bpck6.o obj-$(CONFIG_PATA_PARPORT_COMM) += comm.o obj-$(CONFIG_PATA_PARPORT_DSTR) += dstr.o obj-$(CONFIG_PATA_PARPORT_FIT2) += fit2.o +obj-$(CONFIG_PATA_PARPORT_FIT3) += fit3.o diff --git a/drivers/ata/pata_parport/fit3.c b/drivers/ata/pata_parport/fit3.c new file mode 100644 index 000000000000..7c874dc8b41b --- /dev/null +++ b/drivers/ata/pata_parport/fit3.c @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * fit3.c (c) 1998 Grant R. Guenther + * Under the terms of the GNU General Public License. + * + * fit3.c is a low-level protocol driver for newer models + * of the Fidelity International Technology parallel port adapter. + * This adapter is used in their TransDisk 3000 portable + * hard-drives, as well as CD-ROM, PD-CD and other devices. + * + * The TD-2000 and certain older devices use a different protocol. + * Try the fit2 protocol module with them. + * + * NB: The FIT adapters do not appear to support the control + * registers. So, we map ALT_STATUS to STATUS and NO-OP writes + * to the device control register - this means that IDE reset + * will not work on these devices. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "pata_parport.h" + +#define j44(a, b) (((a >> 3) & 0x0f) | ((b << 1) & 0xf0)) + +#define w7(byte) out_p(7, byte) +#define r7() (in_p(7) & 0xff) + +/* cont = 0 - access the IDE register file + * cont = 1 - access the IDE command set + */ + +static void fit3_write_regr(struct pi_adapter *pi, int cont, int regr, int val) +{ + if (cont == 1) + return; + + switch (pi->mode) { + case 0: + case 1: + w2(0xc); w0(regr); w2(0x8); w2(0xc); + w0(val); w2(0xd); + w0(0); w2(0xc); + break; + case 2: + w2(0xc); w0(regr); w2(0x8); w2(0xc); + w4(val); w4(0); + w2(0xc); + break; + } +} + +static int fit3_read_regr(struct pi_adapter *pi, int cont, int regr) +{ + int a, b; + + if (cont) { + if (regr != 6) + return 0xff; + regr = 7; + } + + switch (pi->mode) { + case 0: + w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc); + w2(0xd); a = r1(); + w2(0xf); b = r1(); + w2(0xc); + return j44(a, b); + case 1: + w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); + w2(0xec); w2(0xee); w2(0xef); a = r0(); + w2(0xc); + return a; + case 2: + w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); + w2(0xec); + a = r4(); b = r4(); + w2(0xc); + return a; + } + return -1; +} + +static void fit3_read_block(struct pi_adapter *pi, char *buf, int count) +{ + int k, a, b, c, d; + + switch (pi->mode) { + case 0: + w2(0xc); w0(0x10); w2(0x8); w2(0xc); + for (k = 0; k < count / 2; k++) { + w2(0xd); a = r1(); + w2(0xf); b = r1(); + w2(0xc); c = r1(); + w2(0xe); d = r1(); + buf[2 * k] = j44(a, b); + buf[2 * k + 1] = j44(c, d); + } + w2(0xc); + break; + case 1: + w2(0xc); w0(0x90); w2(0x8); w2(0xc); + w2(0xec); w2(0xee); + for (k = 0; k < count / 2; k++) { + w2(0xef); a = r0(); + w2(0xee); b = r0(); + buf[2 * k] = a; + buf[2 * k + 1] = b; + } + w2(0xec); + w2(0xc); + break; + case 2: + w2(0xc); w0(0x90); w2(0x8); w2(0xc); + w2(0xec); + for (k = 0; k < count; k++) + buf[k] = r4(); + w2(0xc); + break; + } +} + +static void fit3_write_block(struct pi_adapter *pi, char *buf, int count) +{ + int k; + + switch (pi->mode) { + case 0: + case 1: + w2(0xc); w0(0); w2(0x8); w2(0xc); + for (k = 0; k < count/2; k++) { + w0(buf[2 * k]); w2(0xd); + w0(buf[2 * k + 1]); w2(0xc); + } + break; + case 2: + w2(0xc); w0(0); w2(0x8); w2(0xc); + for (k = 0; k < count; k++) + w4(buf[k]); + w2(0xc); + break; + } +} + +static void fit3_connect(struct pi_adapter *pi) +{ + pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(0xc); w0(0); w2(0xa); + if (pi->mode == 2) { + w2(0xc); w0(0x9); w2(0x8); w2(0xc); + } +} + +static void fit3_disconnect(struct pi_adapter *pi) +{ + w2(0xc); w0(0xa); w2(0x8); w2(0xc); + w0(pi->saved_r0); + w2(pi->saved_r2); +} + +static void fit3_log_adapter(struct pi_adapter *pi, char *scratch, int verbose) +{ + static char * const mode_string[] = { "4-bit", "8-bit", "EPP" }; + + dev_info(&pi->dev, "fit3, FIT 3000 adapter at 0x%x, mode %d (%s), delay %d\n", + pi->port, pi->mode, mode_string[pi->mode], pi->delay); +} + +static struct pi_protocol fit3 = { + .owner = THIS_MODULE, + .name = "fit3", + .max_mode = 3, + .epp_first = 2, + .default_delay = 1, + .max_units = 1, + .write_regr = fit3_write_regr, + .read_regr = fit3_read_regr, + .write_block = fit3_write_block, + .read_block = fit3_read_block, + .connect = fit3_connect, + .disconnect = fit3_disconnect, + .log_adapter = fit3_log_adapter, + .sht = { PATA_PARPORT_SHT("pata_parport-fit3") }, +}; + +MODULE_LICENSE("GPL"); +module_pata_parport_driver(fit3); -- Ondrej Zary