From patchwork Mon Apr 2 13:29:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 10319695 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3358660375 for ; Mon, 2 Apr 2018 13:29:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 14AD328AD5 for ; Mon, 2 Apr 2018 13:29:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 08D6B28B74; Mon, 2 Apr 2018 13:29:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6D48C28AD5 for ; Mon, 2 Apr 2018 13:29:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750728AbeDBN3q (ORCPT ); Mon, 2 Apr 2018 09:29:46 -0400 Received: from lelnx193.ext.ti.com ([198.47.27.77]:43153 "EHLO lelnx193.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724AbeDBN3p (ORCPT ); Mon, 2 Apr 2018 09:29:45 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelnx193.ext.ti.com (8.15.1/8.15.1) with ESMTP id w32DTet6027923; Mon, 2 Apr 2018 08:29:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1522675780; bh=R0LgqUUumwzr9IDMAF4iA7pFF03hdzhJjAOCKxGM91c=; h=From:To:CC:Subject:Date; b=w4cES7gjToXQH3bfSwa9MjOSBbUd+Msc7ChoYZ93pv7JtKWg0cdQhpD8mXTtmrFMS h4BcYNkPDmnh/TmlcAsD1UO8kAUkiTDb7759ROkFNpV0q7eK3vdKRkgSThbI8vjTGn +rpG9Xw/V0XYLI3QsythM067Reig6qH/55oDZRAo= Received: from DLEE104.ent.ti.com (dlee104.ent.ti.com [157.170.170.34]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id w32DTe1Y011856; Mon, 2 Apr 2018 08:29:40 -0500 Received: from DLEE113.ent.ti.com (157.170.170.24) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1261.35; Mon, 2 Apr 2018 08:29:40 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1261.35 via Frontend Transport; Mon, 2 Apr 2018 08:29:40 -0500 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id w32DTbXG007254; Mon, 2 Apr 2018 08:29:38 -0500 From: Kishon Vijay Abraham I To: , Lorenzo Pieralisi , Bjorn Helgaas CC: , , Gustavo Pimentel Subject: [PATCH] PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry Date: Mon, 2 Apr 2018 18:59:35 +0530 Message-ID: <20180402132935.32008-1-kishon@ti.com> X-Mailer: git-send-email 2.16.2 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In order to be able to provide correct driver_data for pci_epf device, a separate configfs entry for each pci_epf_device_id table entry in pci_epf_driver is required. Add support to create configfs entry for each pci_epf_device_id table entry here. Signed-off-by: Kishon Vijay Abraham I Tested-by: Gustavo Pimentel --- drivers/pci/endpoint/pci-epf-core.c | 23 +++++++++++++++++++++-- include/linux/pci-epf.h | 4 ++-- 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index 59ed29e550e9..d6787f39fd41 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -15,6 +15,8 @@ #include #include +static DEFINE_MUTEX(pci_epf_mutex); + static struct bus_type pci_epf_bus_type; static const struct device_type pci_epf_type; @@ -139,7 +141,13 @@ EXPORT_SYMBOL_GPL(pci_epf_alloc_space); */ void pci_epf_unregister_driver(struct pci_epf_driver *driver) { - pci_ep_cfs_remove_epf_group(driver->group); + struct config_group *group; + + mutex_lock(&pci_epf_mutex); + list_for_each_entry(group, &driver->epf_group, group_entry) + pci_ep_cfs_remove_epf_group(group); + list_del(&driver->epf_group); + mutex_unlock(&pci_epf_mutex); driver_unregister(&driver->driver); } EXPORT_SYMBOL_GPL(pci_epf_unregister_driver); @@ -155,6 +163,8 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver, struct module *owner) { int ret; + struct config_group *group; + const struct pci_epf_device_id *id; if (!driver->ops) return -EINVAL; @@ -169,7 +179,16 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver, if (ret) return ret; - driver->group = pci_ep_cfs_add_epf_group(driver->driver.name); + INIT_LIST_HEAD(&driver->epf_group); + + id = driver->id_table; + while (id->name[0]) { + group = pci_ep_cfs_add_epf_group(id->name); + mutex_lock(&pci_epf_mutex); + list_add_tail(&group->group_entry, &driver->epf_group); + mutex_unlock(&pci_epf_mutex); + id++; + } return 0; } diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h index e897bf076701..a30dcaafa6e8 100644 --- a/include/linux/pci-epf.h +++ b/include/linux/pci-epf.h @@ -72,7 +72,7 @@ struct pci_epf_ops { * @driver: PCI EPF driver * @ops: set of function pointers for performing EPF operations * @owner: the owner of the module that registers the PCI EPF driver - * @group: configfs group corresponding to the PCI EPF driver + * @epf_group: list of configfs group corresponding to the PCI EPF driver * @id_table: identifies EPF devices for probing */ struct pci_epf_driver { @@ -82,7 +82,7 @@ struct pci_epf_driver { struct device_driver driver; struct pci_epf_ops *ops; struct module *owner; - struct config_group *group; + struct list_head epf_group; const struct pci_epf_device_id *id_table; };