From patchwork Thu Dec 10 16:58:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moritz Fischer X-Patchwork-Id: 11965617 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E25E8C4361B for ; Thu, 10 Dec 2020 16:59:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A90C0221E3 for ; Thu, 10 Dec 2020 16:59:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387776AbgLJQ7N (ORCPT ); Thu, 10 Dec 2020 11:59:13 -0500 Received: from mail-pf1-f193.google.com ([209.85.210.193]:38982 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391047AbgLJQ7L (ORCPT ); Thu, 10 Dec 2020 11:59:11 -0500 Received: by mail-pf1-f193.google.com with SMTP id i3so4665152pfd.6 for ; Thu, 10 Dec 2020 08:58:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8xrVQLkOkYqMOiYDbITEs6MQ6JjKj9uyPsCqicxADHU=; b=HMJoNU8uFOoK3ixL3343nNn7092hLvkY5OXwxQXBDTAYg+SaPRDq9ndSqIeB2XBJIl 5T7krOQb3crMZaF4Hx99imjLOTyjaYBxqkiKDqzd4PaVe0AyUkc7blfNhfW5ZSFAyIx7 1sXiCWZOHFEATGG12+pN3K6K1b6hqQj//mDhMLzgGQblCB4mE5IZFWrlYpiAuMCpTb7f qB+gu8IrLaoSUjvDHeOo3BP2ko+EAR6LD2EoXZKdXWplhpZ3cH8IvN5b55vd0Wq0kUcQ /WuOgWzNPDT/n9242clyCCDKM2+Dg0jFhcKkk+9MCzvY8mDps2wjON08DrQPnmDECW4n HFeg== X-Gm-Message-State: AOAM531Ro/cSldEf0kCbR4T1hSuv45T4Cc7d/o+Ho4ud4OVWZgrdt7fu QRegEHyXR1X/3w/XTsO/59XtBRFC14TM6g== X-Google-Smtp-Source: ABdhPJwchHdNPm6g6Wh4QYJzqn9IPbocgUIHPFT8kn/jvG3CaZhIN9HUjgIyFuLi2A7df/Sl1Llqcw== X-Received: by 2002:a63:dd53:: with SMTP id g19mr7392522pgj.291.1607619510868; Thu, 10 Dec 2020 08:58:30 -0800 (PST) Received: from localhost ([2601:647:5b00:1162:1ac0:17a6:4cc6:d1ef]) by smtp.gmail.com with ESMTPSA id x12sm6954350pfj.25.2020.12.10.08.58.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Dec 2020 08:58:30 -0800 (PST) From: Moritz Fischer To: gregkh@linuxfoundation.org Cc: linux-fpga@vger.kernel.org, trix@redhat.com, hao.wu@intel.com, yilun.xu@intel.com, russell.h.weight@intel.com, Moritz Fischer Subject: [PATCH 6/8] fpga: dfl: move dfl bus related APIs to include/linux/dfl.h Date: Thu, 10 Dec 2020 08:58:02 -0800 Message-Id: <20201210165804.44234-7-mdf@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201210165804.44234-1-mdf@kernel.org> References: <20201210165804.44234-1-mdf@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org From: Xu Yilun Now the dfl drivers could be made as independent modules and put in different folders according to their functionalities. In order for scattered dfl device drivers to include dfl bus APIs, move the dfl bus APIs to a new header file in the public folder. [mdf@kernel.org: Fixed up header guards to match filename] Signed-off-by: Xu Yilun Signed-off-by: Moritz Fischer Reviewed-by: Tom Rix Acked-by: Wu Hao --- MAINTAINERS | 1 + drivers/fpga/dfl.c | 1 + drivers/fpga/dfl.h | 72 ------------------------------------- include/linux/dfl.h | 86 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 88 insertions(+), 72 deletions(-) create mode 100644 include/linux/dfl.h diff --git a/MAINTAINERS b/MAINTAINERS index 52086876ce40..5fe658a6d846 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6895,6 +6895,7 @@ S: Maintained F: Documentation/ABI/testing/sysfs-bus-dfl F: Documentation/fpga/dfl.rst F: drivers/fpga/dfl* +F: include/linux/dfl.h F: include/uapi/linux/fpga-dfl.h FPGA MANAGER FRAMEWORK diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index 5a6ba3b2fa05..511b20ff35a3 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -10,6 +10,7 @@ * Wu Hao * Xiao Guangrong */ +#include #include #include #include diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h index 549c7900dcfd..2b82c96ba56c 100644 --- a/drivers/fpga/dfl.h +++ b/drivers/fpga/dfl.h @@ -517,76 +517,4 @@ long dfl_feature_ioctl_set_irq(struct platform_device *pdev, struct dfl_feature *feature, unsigned long arg); -/** - * enum dfl_id_type - define the DFL FIU types - */ -enum dfl_id_type { - FME_ID = 0, - PORT_ID = 1, - DFL_ID_MAX, -}; - -/** - * struct dfl_device - represent an dfl device on dfl bus - * - * @dev: generic device interface. - * @id: id of the dfl device. - * @type: type of DFL FIU of the device. See enum dfl_id_type. - * @feature_id: feature identifier local to its DFL FIU type. - * @mmio_res: mmio resource of this dfl device. - * @irqs: list of Linux IRQ numbers of this dfl device. - * @num_irqs: number of IRQs supported by this dfl device. - * @cdev: pointer to DFL FPGA container device this dfl device belongs to. - * @id_entry: matched id entry in dfl driver's id table. - */ -struct dfl_device { - struct device dev; - int id; - u16 type; - u16 feature_id; - struct resource mmio_res; - int *irqs; - unsigned int num_irqs; - struct dfl_fpga_cdev *cdev; - const struct dfl_device_id *id_entry; -}; - -/** - * struct dfl_driver - represent an dfl device driver - * - * @drv: driver model structure. - * @id_table: pointer to table of device IDs the driver is interested in. - * { } member terminated. - * @probe: mandatory callback for device binding. - * @remove: callback for device unbinding. - */ -struct dfl_driver { - struct device_driver drv; - const struct dfl_device_id *id_table; - - int (*probe)(struct dfl_device *dfl_dev); - void (*remove)(struct dfl_device *dfl_dev); -}; - -#define to_dfl_dev(d) container_of(d, struct dfl_device, dev) -#define to_dfl_drv(d) container_of(d, struct dfl_driver, drv) - -/* - * use a macro to avoid include chaining to get THIS_MODULE. - */ -#define dfl_driver_register(drv) \ - __dfl_driver_register(drv, THIS_MODULE) -int __dfl_driver_register(struct dfl_driver *dfl_drv, struct module *owner); -void dfl_driver_unregister(struct dfl_driver *dfl_drv); - -/* - * module_dfl_driver() - Helper macro for drivers that don't do - * anything special in module init/exit. This eliminates a lot of - * boilerplate. Each module may only use this macro once, and - * calling it replaces module_init() and module_exit(). - */ -#define module_dfl_driver(__dfl_driver) \ - module_driver(__dfl_driver, dfl_driver_register, \ - dfl_driver_unregister) - #endif /* __FPGA_DFL_H */ diff --git a/include/linux/dfl.h b/include/linux/dfl.h new file mode 100644 index 000000000000..6cc10982351a --- /dev/null +++ b/include/linux/dfl.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Header file for DFL driver and device API + * + * Copyright (C) 2020 Intel Corporation, Inc. + */ + +#ifndef __LINUX_DFL_H +#define __LINUX_DFL_H + +#include +#include + +/** + * enum dfl_id_type - define the DFL FIU types + */ +enum dfl_id_type { + FME_ID = 0, + PORT_ID = 1, + DFL_ID_MAX, +}; + +/** + * struct dfl_device - represent an dfl device on dfl bus + * + * @dev: generic device interface. + * @id: id of the dfl device. + * @type: type of DFL FIU of the device. See enum dfl_id_type. + * @feature_id: feature identifier local to its DFL FIU type. + * @mmio_res: mmio resource of this dfl device. + * @irqs: list of Linux IRQ numbers of this dfl device. + * @num_irqs: number of IRQs supported by this dfl device. + * @cdev: pointer to DFL FPGA container device this dfl device belongs to. + * @id_entry: matched id entry in dfl driver's id table. + */ +struct dfl_device { + struct device dev; + int id; + u16 type; + u16 feature_id; + struct resource mmio_res; + int *irqs; + unsigned int num_irqs; + struct dfl_fpga_cdev *cdev; + const struct dfl_device_id *id_entry; +}; + +/** + * struct dfl_driver - represent an dfl device driver + * + * @drv: driver model structure. + * @id_table: pointer to table of device IDs the driver is interested in. + * { } member terminated. + * @probe: mandatory callback for device binding. + * @remove: callback for device unbinding. + */ +struct dfl_driver { + struct device_driver drv; + const struct dfl_device_id *id_table; + + int (*probe)(struct dfl_device *dfl_dev); + void (*remove)(struct dfl_device *dfl_dev); +}; + +#define to_dfl_dev(d) container_of(d, struct dfl_device, dev) +#define to_dfl_drv(d) container_of(d, struct dfl_driver, drv) + +/* + * use a macro to avoid include chaining to get THIS_MODULE. + */ +#define dfl_driver_register(drv) \ + __dfl_driver_register(drv, THIS_MODULE) +int __dfl_driver_register(struct dfl_driver *dfl_drv, struct module *owner); +void dfl_driver_unregister(struct dfl_driver *dfl_drv); + +/* + * module_dfl_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit(). + */ +#define module_dfl_driver(__dfl_driver) \ + module_driver(__dfl_driver, dfl_driver_register, \ + dfl_driver_unregister) + +#endif /* __LINUX_DFL_H */