From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x244.google.com (mail-oi0-x244.google.com [IPv6:2607:f8b0:4003:c06::244]) (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 3srtt04bpZzDrWS for ; Sun, 9 Oct 2016 04:39:04 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=XrliGz6X; dkim-atps=neutral Received: by mail-oi0-x244.google.com with SMTP id h186so5451342oia.3 for ; Sat, 08 Oct 2016 10:39:04 -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=rOayd6yqQEjURZInnL08jFgLHqOngbsNasG/b6YyVuo=; b=XrliGz6Xrd6NeL0slXA6hRzp8oSrNLOP8wnC1DQHPI4Ls2gMDV6Ijj1f1voe1LqJ1N tfLw1g6T/LRCbSMjRlHw/8bxsRljWFuuAQHPhl3REfQvstJUUoeqdw95Gn9nr8QwIu0G s0qedv8TTfreTaOCPgal7ICsj8YbGm4vq+HeyLYGq4atd8TAR6M+8cyrsMz5SH3haXjk tn7Av/hqCWrkqdtGGHnHlVVbZRFqJ1OGApp1xedNuV74O93FSBBjO1sR5TjF+J64KK94 7ENPiQvPo7Wd2yegoNmtTGxK/j0gBxLA0bzMdPU35cDxh0T/+jkbxQOzeh6H8diTzKPR 1Gig== 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=rOayd6yqQEjURZInnL08jFgLHqOngbsNasG/b6YyVuo=; b=Zi3cgTl7n+FHIO5gsmo2hy3UFrJSHWyt4nrwNIWlfI50YBmCmeH1zov5va/QeJKZXz 3UWcUgrUCti3W3dcnUmMFuzc2QtVQmyi2bWsGxA13gdLdM6yhXpu3aLi2pddI7WKd7z/ Zg4TrUriUMyCRmqmAA8KP+LbXO9mX9HVZH2RmWZI7au8aYbRIw2URUqBfY2R6woRbHuu 8QM0VCE4BopQgnoUSeDfHr85BSPUOqbBdxGXalmDDJDV+u0Ryv5cd5LbF1ZHFLkyeZJn M8H+ifOYiQqFPzklw7CJP+waJwQu4cEgCiqAZx+xAW/n9MgHjG071+IiWriT+/IuGj8A k4SQ== X-Gm-Message-State: AA6/9RkBhUvHTwGt5WgfSCz2AO7efDfvUiL1btYOOeKc6HI1cC5tmOWep+vj5h4A5PBgfA== X-Received: by 10.157.33.121 with SMTP id l54mr13749443otd.203.1475948342958; Sat, 08 Oct 2016 10:39:02 -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 g17sm8025290otd.38.2016.10.08.10.39.02 (version=TLS1 cipher=AES128-SHA bits=128/128); Sat, 08 Oct 2016 10:39:02 -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 Subject: [PATCH linux v2 05/17] fsi: Add fake master driver Date: Sat, 8 Oct 2016 12:38:41 -0500 Message-Id: <1475948333-55960-6-git-send-email-christopher.lee.bostic@gmail.com> X-Mailer: git-send-email 2.7.4 (Apple Git-66) In-Reply-To: <1475948333-55960-1-git-send-email-christopher.lee.bostic@gmail.com> References: <1475948333-55960-1-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: Sat, 08 Oct 2016 17:39:05 -0000 From: Jeremy Kerr For debugging, add a fake master driver, that only supports reads, returning a fixed set of data. Signed-off-by: Jeremy Kerr --- drivers/fsi/Kconfig | 10 +++++ drivers/fsi/Makefile | 1 + drivers/fsi/fsi-master-fake.c | 96 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 107 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..50aac0b --- /dev/null +++ b/drivers/fsi/fsi-master-fake.c @@ -0,0 +1,96 @@ +/* + * 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