From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5284DC4332F for ; Fri, 11 Nov 2022 13:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234033AbiKKN50 (ORCPT ); Fri, 11 Nov 2022 08:57:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233946AbiKKN4H (ORCPT ); Fri, 11 Nov 2022 08:56:07 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECECC7F553; Fri, 11 Nov 2022 05:55:04 -0800 (PST) Message-ID: <20221111122015.331584998@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1668174903; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=17rQ88vsZDtlPmncoLd4F1WtMoDw5uG6QE6awHFzEIw=; b=u0MBwOKfdKIjVYsMnyfBs1VTZDXJEX6DuRpL7pKRU7BC7LYQGVWXa3TmnszJmKSgH0051K OtzIlEYeXodSuQoLNocXCVjSNJ+SgKfEAeXuS+64VjLc4GPurIWeeRHa/RRkj7DvlLMz63 0E/LNoqZcMdHj7I03PLUzpPAk0nNuDtVGV0syPSnWCo1HSXjsr/Do7sHxw7mBxdBdzj41H zYliO7BNOl/ULvKU3DrQsE0n8X9U9rQ64Pi/Xy1uzv7lY0jO0j/y3V/2yvzS+fX30EUVaF iQ3hOSlA943JC+BvTCqBq/hIeuk9COv4UtayBK3AXOCrIBZBpde6Ui88XR3MVQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1668174903; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=17rQ88vsZDtlPmncoLd4F1WtMoDw5uG6QE6awHFzEIw=; b=yM3dN0j6bNW9WtIT9LkNs9RYaMlN3S1D8j/YyTsQdLKC9l8Stsx3vyIB4R3Y33YnomF1gB ueyboCuUeHb+1ACQ== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Joerg Roedel , Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Marc Zyngier , Greg Kroah-Hartman , Jason Gunthorpe , Dave Jiang , Alex Williamson , Kevin Tian , Dan Williams , Logan Gunthorpe , Ashok Raj , Jon Mason , Allen Hubbe , "Ahmed S. Darwish" , Reinette Chatre , Michael Ellerman , Christophe Leroy , linuxppc-dev@lists.ozlabs.org Subject: [patch 30/39] PCI/MSI: Move pci_msi_restore_state() to api.c References: <20221111120501.026511281@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Fri, 11 Nov 2022 14:55:03 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ahmed S. Darwish To distangle the maze in msi.c, all exported device-driver MSI APIs are now to be grouped in one file, api.c. Move pci_msi_enabled() and add kernel-doc for the function. Signed-off-by: Ahmed S. Darwish Signed-off-by: Thomas Gleixner diff --git a/drivers/pci/msi/api.c b/drivers/pci/msi/api.c index ee9ed5ccd94d..8d1cf6db9bd7 100644 --- a/drivers/pci/msi/api.c +++ b/drivers/pci/msi/api.c @@ -308,6 +308,21 @@ void pci_free_irq_vectors(struct pci_dev *dev) } EXPORT_SYMBOL(pci_free_irq_vectors); +/** + * pci_restore_msi_state() - Restore cached MSI(-X) state on device + * @dev: the PCI device to operate on + * + * Write the Linux-cached MSI(-X) state back on device. This is + * typically useful upon system resume, or after an error-recovery PCI + * adapter reset. + */ +void pci_restore_msi_state(struct pci_dev *dev) +{ + __pci_restore_msi_state(dev); + __pci_restore_msix_state(dev); +} +EXPORT_SYMBOL_GPL(pci_restore_msi_state); + /** * pci_msi_enabled() - Are MSI(-X) interrupts enabled system-wide? * diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c index 59c33bc7fe81..a5d168c823ff 100644 --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -199,7 +199,7 @@ bool __weak arch_restore_msi_irqs(struct pci_dev *dev) return true; } -static void __pci_restore_msi_state(struct pci_dev *dev) +void __pci_restore_msi_state(struct pci_dev *dev) { struct msi_desc *entry; u16 control; @@ -231,7 +231,7 @@ static void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set) pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl); } -static void __pci_restore_msix_state(struct pci_dev *dev) +void __pci_restore_msix_state(struct pci_dev *dev) { struct msi_desc *entry; bool write_msg; @@ -257,13 +257,6 @@ static void __pci_restore_msix_state(struct pci_dev *dev) pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL, 0); } -void pci_restore_msi_state(struct pci_dev *dev) -{ - __pci_restore_msi_state(dev); - __pci_restore_msix_state(dev); -} -EXPORT_SYMBOL_GPL(pci_restore_msi_state); - static void pcim_msi_release(void *pcidev) { struct pci_dev *dev = pcidev; diff --git a/drivers/pci/msi/msi.h b/drivers/pci/msi/msi.h index f3f4ede53171..8170ef2c5ad0 100644 --- a/drivers/pci/msi/msi.h +++ b/drivers/pci/msi/msi.h @@ -94,6 +94,8 @@ void pci_free_msi_irqs(struct pci_dev *dev); int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, struct irq_affinity *affd); int __pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec, int maxvec, struct irq_affinity *affd, int flags); +void __pci_restore_msi_state(struct pci_dev *dev); +void __pci_restore_msix_state(struct pci_dev *dev); /* Legacy (!IRQDOMAIN) fallbacks */