From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751714AbcFXNzZ (ORCPT ); Fri, 24 Jun 2016 09:55:25 -0400 Received: from mail1.bemta3.messagelabs.com ([195.245.230.175]:58394 "EHLO mail1.bemta3.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751374AbcFXNzX (ORCPT ); Fri, 24 Jun 2016 09:55:23 -0400 X-Greylist: delayed 436 seconds by postgrey-1.27 at vger.kernel.org; Fri, 24 Jun 2016 09:55:23 EDT X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrEIsWRWlGSWpSXmKPExsUS8J9toq6QVW6 4wacdEhaXd81hs1j57SezA5PHzll32T0+b5ILYIpizcxLyq9IYM2YtXUFW8EztYpdC5+xNDD+ Vuhi5OIQEmhglDi94hZ7FyMnh4SAn8S8FxvYIRLzGSUe/1jDCJJgEVCV+H9kH1gRm4COxLn2Z lYQW0RAUuLfxX4mEJtZQEni5ONLYDXCAh4SNw7OB4vzCuhKvDm8GMoWlDg58wkLRL2OxILdn9 i6GDmAbGmJ5f84QExRARWJVwfrQSqEgCZ+ftHHDHGavMTevsVg1RICcRJf7phCmNYSEzcnTmA UnIVk/Cwk42chjF/AyLyKUb04tagstUjXVC+pKDM9oyQ3MTNH19DAWC83tbg4MT01JzGpWC85 P3cTIzB86xkYGHcwXv7qdIhRkoNJSZR32qKccCG+pPyUyozE4oz4otKc1OJDjDIcHEoSvPcsc sOFBItS01Mr0jJzgJEEk5bg4FES4Z0PkuYtLkjMLc5Mh0idYtTlWLLrwVomIZa8/LxUKXHeHy BFAiBFGaV5cCNgUX2JUVZKmJeRgYFBiKcgtSg3swRV/hWjOAejkjCvgiXQFJ7MvBK4Ta+AjmA COuJufzbIESWJCCmpBsZooSf2LLd3fFjrV+qlEZKVOHmhW6zJec+5zzY+67ZU4ljjZzTtTa9N AP/Lk9HBFcsmaGWvfPZ7UZtl3Y/PtUz7DmqqrI2t9+H6tjyZ4eMvp6V1Kdapu+wTN7Hzc+789 r5u+4beCod9F+yiQ/4bMRx7mdFllKL/f2nonXL95bPv7TK/+ULQ+K4SS3FGoqEWc1FxIgB0OM zL5QIAAA== X-Env-Sender: Andreas.Werner@men.de X-Msg-Ref: server-9.tower-38.messagelabs.com!1466776082!47484203!1 X-Originating-IP: [80.255.6.145] X-StarScan-Received: X-StarScan-Version: 8.46; banners=-,-,- X-VirusChecked: Checked X-PGP-Universal: processed; by keys.men.de on Fri, 24 Jun 2016 15:48:02 +0200 Date: Fri, 24 Jun 2016 15:47:58 +0200 From: Andreas Werner To: CC: Subject: [PATCH] mcb: Added support for LPC or non PCI based MCB carrier Message-ID: <20160624134753.GA10144@awelinux> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Originating-IP: [192.1.1.170] X-ClientProxiedBy: MEN-EX01.intra.men.de (192.168.1.1) To MEN-EX01.intra.men.de (192.168.1.1) X-EXCLAIMER-MD-CONFIG: e4841e51-7998-49c0-ba41-8b8a0e2d8962 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for MCB bases FPGAs connected to the LPC or non PCI Bus. This driver currently supports the SC24 board. The FPGA is connected to the LPC bus and is identified using the BIOS DMI string. Signed-off-by: Andreas Werner --- drivers/mcb/Kconfig | 9 +++ drivers/mcb/Makefile | 1 + drivers/mcb/mcb-lpc.c | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 168 insertions(+) create mode 100644 drivers/mcb/mcb-lpc.c diff --git a/drivers/mcb/Kconfig b/drivers/mcb/Kconfig index e9a6976..76d9c51 100644 --- a/drivers/mcb/Kconfig +++ b/drivers/mcb/Kconfig @@ -28,4 +28,13 @@ config MCB_PCI If build as a module, the module is called mcb-pci.ko +config MCB_LPC + tristate "LPC (non PCI) based MCB carrier" + default n + help + + This is a MCB carrier on a LPC or non PCI device. + + If build as a module, the module is called mcb-lpc.ko + endif # MCB diff --git a/drivers/mcb/Makefile b/drivers/mcb/Makefile index 1ae1413..bcc7745 100644 --- a/drivers/mcb/Makefile +++ b/drivers/mcb/Makefile @@ -5,3 +5,4 @@ mcb-y += mcb-core.o mcb-y += mcb-parse.o obj-$(CONFIG_MCB_PCI) += mcb-pci.o +obj-$(CONFIG_MCB_LPC) += mcb-lpc.o diff --git a/drivers/mcb/mcb-lpc.c b/drivers/mcb/mcb-lpc.c new file mode 100644 index 0000000..d072c08 --- /dev/null +++ b/drivers/mcb/mcb-lpc.c @@ -0,0 +1,158 @@ +/* + * MEN Chameleon Bus. + * + * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) + * Author: Andreas Werner + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; version 2 of the License. + */ + +#include +#include +#include +#include +#include +#include "mcb-internal.h" + +struct priv { + struct mcb_bus *bus; + struct resource *mem; + void __iomem *base; +}; + +static int mcb_lpc_probe(struct platform_device *pdev) +{ + struct resource *res; + struct priv *priv; + int ret = 0; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!priv->mem) { + dev_err(&pdev->dev, "No Memory resource\n"); + return -ENODEV; + } + + res = devm_request_mem_region(&pdev->dev, priv->mem->start, + resource_size(priv->mem), + KBUILD_MODNAME); + if (!res) { + dev_err(&pdev->dev, "Failed to request IO memory\n"); + return -EBUSY; + } + + priv->base = devm_ioremap(&pdev->dev, priv->mem->start, + resource_size(priv->mem)); + if (!priv->base) { + dev_err(&pdev->dev, "Cannot ioremap\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, priv); + + priv->bus = mcb_alloc_bus(&pdev->dev); + if (IS_ERR(priv->bus)) + return PTR_ERR(priv->bus); + + ret = chameleon_parse_cells(priv->bus, priv->mem->start, priv->base); + if (ret < 0) { + mcb_release_bus(priv->bus); + return ret; + } + + dev_dbg(&pdev->dev, "Found %d cells\n", ret); + + mcb_bus_add_devices(priv->bus); + + return 0; + +} + +static int mcb_lpc_remove(struct platform_device *pdev) +{ + struct priv *priv = platform_get_drvdata(pdev); + + mcb_release_bus(priv->bus); + + return 0; +} + +static struct platform_device *mcb_lpc_pdev; + +static int mcb_lpc_create_platform_device(const struct dmi_system_id *id) +{ + struct resource *res = id->driver_data; + int ret; + + mcb_lpc_pdev = platform_device_alloc("mcb-lpc", -1); + if (!mcb_lpc_pdev) + return -ENOMEM; + + ret = platform_device_add_resources(mcb_lpc_pdev, res, 1); + if (ret) + goto out_put; + + ret = platform_device_add(mcb_lpc_pdev); + if (ret) + goto out_put; + + return 0; + +out_put: + platform_device_put(mcb_lpc_pdev); + return ret; +} + +static struct resource sc24_fpga_resource = { + .start = 0xe000e000, + .end = 0xe000e000 + CHAM_HEADER_SIZE, + .flags = IORESOURCE_MEM, +}; + +static struct platform_driver mcb_lpc_driver = { + .driver = { + .name = "mcb-lpc", + }, + .probe = mcb_lpc_probe, + .remove = mcb_lpc_remove, +}; + +static const struct dmi_system_id mcb_lpc_dmi_table[] = { + { + .ident = "SC24", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MEN"), + DMI_MATCH(DMI_PRODUCT_VERSION, "14SC24"), + }, + .driver_data = (void *)&sc24_fpga_resource, + .callback = mcb_lpc_create_platform_device, + }, + {} +}; +MODULE_DEVICE_TABLE(dmi, mcb_lpc_dmi_table); + +static int __init mcb_lpc_init(void) +{ + if (!dmi_check_system(mcb_lpc_dmi_table)) + return -ENODEV; + + return platform_driver_register(&mcb_lpc_driver); +} + +static void __exit mcb_lpc_exit(void) +{ + platform_device_unregister(mcb_lpc_pdev); + platform_driver_unregister(&mcb_lpc_driver); +} + +module_init(mcb_lpc_init); +module_exit(mcb_lpc_exit); + +MODULE_AUTHOR("Andreas Werner "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MCB over LPC support"); -- 2.6.2