From patchwork Fri Oct 2 04:48:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11812843 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3BBEA139A for ; Fri, 2 Oct 2020 04:49:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D75720754 for ; Fri, 2 Oct 2020 04:49:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725991AbgJBEtB (ORCPT ); Fri, 2 Oct 2020 00:49:01 -0400 Received: from mx.socionext.com ([202.248.49.38]:24379 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725926AbgJBEtB (ORCPT ); Fri, 2 Oct 2020 00:49:01 -0400 Received: from unknown (HELO kinkan-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 02 Oct 2020 13:48:58 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by kinkan-ex.css.socionext.com (Postfix) with ESMTP id C684A180B3C; Fri, 2 Oct 2020 13:48:58 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 2 Oct 2020 13:48:58 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 144CC1A0509; Fri, 2 Oct 2020 13:48:58 +0900 (JST) From: Kunihiko Hayashi To: Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Masami Hiramatsu , Jassi Brar , Kunihiko Hayashi Subject: [PATCH 1/3] PCI: endpoint: Add 'started' to pci_epc to set whether the controller is started Date: Fri, 2 Oct 2020 13:48:45 +0900 Message-Id: <1601614127-13837-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1601614127-13837-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1601614127-13837-1-git-send-email-hayashi.kunihiko@socionext.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This adds a member 'started' as a boolean value to struct pci_epc to set whether the controller is started, and also adds a function to get the value. Signed-off-by: Kunihiko Hayashi --- drivers/pci/endpoint/pci-epc-core.c | 2 ++ include/linux/pci-epc.h | 7 +++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c index cadd3db..155be574 100644 --- a/drivers/pci/endpoint/pci-epc-core.c +++ b/drivers/pci/endpoint/pci-epc-core.c @@ -148,6 +148,7 @@ void pci_epc_stop(struct pci_epc *epc) mutex_lock(&epc->lock); epc->ops->stop(epc); + epc->started = false; mutex_unlock(&epc->lock); } EXPORT_SYMBOL_GPL(pci_epc_stop); @@ -170,6 +171,7 @@ int pci_epc_start(struct pci_epc *epc) mutex_lock(&epc->lock); ret = epc->ops->start(epc); + epc->started = true; mutex_unlock(&epc->lock); return ret; diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h index cc66bec..d875d2d 100644 --- a/include/linux/pci-epc.h +++ b/include/linux/pci-epc.h @@ -107,6 +107,7 @@ struct pci_epc_mem { * @lock: mutex to protect pci_epc ops * @function_num_map: bitmap to manage physical function number * @notifier: used to notify EPF of any EPC events (like linkup) + * @started: true if this EPC is started */ struct pci_epc { struct device dev; @@ -121,6 +122,7 @@ struct pci_epc { struct mutex lock; unsigned long function_num_map; struct atomic_notifier_head notifier; + bool started; }; /** @@ -167,6 +169,11 @@ pci_epc_register_notifier(struct pci_epc *epc, struct notifier_block *nb) return atomic_notifier_chain_register(&epc->notifier, nb); } +static inline bool pci_epc_is_started(struct pci_epc *epc) +{ + return epc->started; +} + struct pci_epc * __devm_pci_epc_create(struct device *dev, const struct pci_epc_ops *ops, struct module *owner);