From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x242.google.com (mail-oi0-x242.google.com [IPv6:2607:f8b0:4003:c06::242]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3t6Wrl5WL6zDvXh for ; Mon, 31 Oct 2016 09:10:15 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=nh0G0Z3y; dkim-atps=neutral Received: by mail-oi0-x242.google.com with SMTP id 62so5826525oif.1 for ; Sun, 30 Oct 2016 15:10:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=uQGw1kamjRIz9sSH+lBpHPuCl8NZGVvizyqJMq3a+uE=; b=nh0G0Z3ysS3OuGSlCVCdKNAKp78GMBn5dXIvQa+YghuU81cDPANSNN1mUkYJpTvqKH sYgjCs+85dTdB7foFg8hP2B2i7TXpKAhHgv3WRue5puZAyi47O4kJJs1dXhqXketq23Z 1M/wi0p0xSO7l846PF/OvSlf1URtjfqqf+IRUNz0IQ1/oOYeSFpgw4urPHyer1cU3n3m woFKfCiuhwLCoUj2seyHPSJuY6Cpx1MUetIdAn2FajDWBYUo+MqVm+72iPgLW5ewFUnA IB9zSoKpLvFTSvXnp0sRzBs9M4y1wCGKw3nlCEKdK7q63yJsGYRYvGVSoWHqSKq9QJgA 2iew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=uQGw1kamjRIz9sSH+lBpHPuCl8NZGVvizyqJMq3a+uE=; b=DXB/JOGySkhzEeVoM0KbB9a00HXA4hW5hhGaymFkaRjSr6A742YE6HvBCnK+7pptQA bWpz6VcJF+Fdzb2FSJERusEJspTujMcKoaXdZX6Ciuw6UBiIc1y3TSWeivK+syEAPZBY vVGj7kWqMJUCH3+lAN/xo68z8jBUM3PC9FZvVqWFro/yl3dUS9e5PWOuLvT7YLNaIhNd phYjSgKyyvbVbriZibtBvCVXbxvtoKKtIMd4NMUUsmUvKQKKFfKmDx5lV+UoWcyFnnUk jUzY/GSiU2lgXGD9Z0sNF5o1CGXvTqyviU5QO1a2pUVx9rj/KYno89cNPQTGERhjeAL2 4GXA== X-Gm-Message-State: ABUngvfAjczNt+9HK3Ige1OTqc9VgSmsGAjOMiOToC4y0JAN6bOeFALP+FffWAMLjH9pbQ== X-Received: by 10.202.80.8 with SMTP id e8mr24423164oib.20.1477865414043; Sun, 30 Oct 2016 15:10:14 -0700 (PDT) Received: from Christophers-MacBook-Pro.local.com (45-20-192-79.lightspeed.austtx.sbcglobal.net. [45.20.192.79]) by smtp.gmail.com with ESMTPSA id q59sm7585484ota.20.2016.10.30.15.10.12 (version=TLS1 cipher=AES128-SHA bits=128/128); Sun, 30 Oct 2016 15:10:13 -0700 (PDT) From: christopher.lee.bostic@gmail.com To: openbmc@lists.ozlabs.org Cc: joel@jms.id.au, zahrens@us.ibm.com, xxpetri@de.ibm.com, Jeremy Kerr , Chris Bostic Subject: [PATCH linux v6 05/18] fsi: Add fake master driver Date: Sun, 30 Oct 2016 17:09:26 -0500 Message-Id: <1477865379-11566-25-git-send-email-christopher.lee.bostic@gmail.com> X-Mailer: git-send-email 2.7.4 (Apple Git-66) In-Reply-To: <1477865379-11566-1-git-send-email-christopher.lee.bostic@gmail.com> References: <1477865379-11566-1-git-send-email-christopher.lee.bostic@gmail.com> X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 30 Oct 2016 22:10:16 -0000 From: Jeremy Kerr For debugging, add a fake master driver, that only supports reads, returning a fixed set of data. Includes changes from Chris Bostic . Signed-off-by: Jeremy Kerr Signed-off-by: Chris Bostic --- drivers/fsi/Kconfig | 10 +++++ drivers/fsi/Makefile | 1 + drivers/fsi/fsi-master-fake.c | 95 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 106 insertions(+) create mode 100644 drivers/fsi/fsi-master-fake.c diff --git a/drivers/fsi/Kconfig b/drivers/fsi/Kconfig index 04c1a0e..f065dbe 100644 --- a/drivers/fsi/Kconfig +++ b/drivers/fsi/Kconfig @@ -9,4 +9,14 @@ config FSI ---help--- FSI - the FRU Support Interface - is a simple bus for low-level access to POWER-based hardware. + +if FSI + +config FSI_MASTER_FAKE + tristate "Fake FSI master" + depends on FSI + ---help--- + This option enables a fake FSI master driver for debugging. +endif + endmenu diff --git a/drivers/fsi/Makefile b/drivers/fsi/Makefile index db0e5e7..847c00c 100644 --- a/drivers/fsi/Makefile +++ b/drivers/fsi/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_FSI) += fsi-core.o +obj-$(CONFIG_FSI_MASTER_FAKE) += fsi-master-fake.o diff --git a/drivers/fsi/fsi-master-fake.c b/drivers/fsi/fsi-master-fake.c new file mode 100644 index 0000000..ec1ed5e --- /dev/null +++ b/drivers/fsi/fsi-master-fake.c @@ -0,0 +1,95 @@ +/* + * Fake FSI master driver for FSI development + * + * Copyright (C) IBM Corporation 2016 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +#include "fsi-master.h" + +const uint8_t data[] = { + 0xc0, 0x02, 0x08, 0x03, /* chip id */ + 0x80, 0x01, 0x11, 0x00, /* peek */ + 0x80, 0x01, 0x20, 0x3e, /* slave */ + 0x00, 0x01, 0x10, 0xa5, /* i2c */ +}; + + +static int fsi_master_fake_read(struct fsi_master *_master, int link, + uint8_t slave, uint32_t addr, void *val, size_t size) +{ + if (link != 0) + return -ENODEV; + + if (addr + size > sizeof(data)) + memset(val, 0, size); + else + memcpy(val, data + addr, size); + + return 0; +} + +static int fsi_master_fake_write(struct fsi_master *_master, int link, + uint8_t slave, uint32_t addr, const void *val, size_t size) +{ + if (link != 0) + return -ENODEV; + + return -EACCES; +} + +static int fsi_master_fake_probe(struct platform_device *pdev) +{ + struct fsi_master *master; + + master = devm_kzalloc(&pdev->dev, sizeof(*master), GFP_KERNEL); + if (!master) + return -ENOMEM; + + master->dev = &pdev->dev; + master->n_links = 1; + master->read = fsi_master_fake_read; + master->write = fsi_master_fake_write; + + return fsi_master_register(master); +} + +static const struct of_device_id fsi_master_fake_match[] = { + { .compatible = "ibm,fsi-master-fake" }, + { }, +}; + +static struct platform_driver fsi_master_fake_driver = { + .driver = { + .name = "fsi-master-fake", + .of_match_table = fsi_master_fake_match, + }, + .probe = fsi_master_fake_probe, +}; + +static int __init fsi_master_fake_init(void) +{ + struct device_node *np; + + platform_driver_register(&fsi_master_fake_driver); + + for_each_compatible_node(np, NULL, "ibm,fsi-master-fake") + of_platform_device_create(np, NULL, NULL); + + return 0; +} + +module_init(fsi_master_fake_init); -- 1.8.2.2