From patchwork Mon Jan 9 20:37:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9505899 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 BA9676075F for ; Mon, 9 Jan 2017 20:38:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A351F272F9 for ; Mon, 9 Jan 2017 20:38:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9813F28515; Mon, 9 Jan 2017 20:38:28 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable 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 32A8028504 for ; Mon, 9 Jan 2017 20:38:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935100AbdAIUiM (ORCPT ); Mon, 9 Jan 2017 15:38:12 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:38242 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S940640AbdAIUh6 (ORCPT ); Mon, 9 Jan 2017 15:37:58 -0500 Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.87 #1 (Red Hat Linux)) id 1cQghU-0002SK-Ar; Mon, 09 Jan 2017 20:37:52 +0000 From: Christoph Hellwig To: linux-pci@vger.kernel.org Cc: Mauro Carvalho Chehab , netdev@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH 3/3] PCI/msi: remove pci_enable_msi_{exact,range} Date: Mon, 9 Jan 2017 21:37:40 +0100 Message-Id: <1483994260-19797-4-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1483994260-19797-1-git-send-email-hch@lst.de> References: <1483994260-19797-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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 All multi-MSI allocations are now done through pci_irq_alloc_vectors, so remove the old interface. Signed-off-by: Christoph Hellwig --- Documentation/PCI/MSI-HOWTO.txt | 6 ++---- drivers/pci/msi.c | 26 +++++++++----------------- include/linux/pci.h | 16 ++-------------- 3 files changed, 13 insertions(+), 35 deletions(-) diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt index cd9c9f6..b570a92 100644 --- a/Documentation/PCI/MSI-HOWTO.txt +++ b/Documentation/PCI/MSI-HOWTO.txt @@ -162,8 +162,6 @@ The following old APIs to enable and disable MSI or MSI-X interrupts should not be used in new code: pci_enable_msi() /* deprecated */ - pci_enable_msi_range() /* deprecated */ - pci_enable_msi_exact() /* deprecated */ pci_disable_msi() /* deprecated */ pci_enable_msix_range() /* deprecated */ pci_enable_msix_exact() /* deprecated */ @@ -268,5 +266,5 @@ or disabled (0). If 0 is found in any of the msi_bus files belonging to bridges between the PCI root and the device, MSIs are disabled. It is also worth checking the device driver to see whether it supports MSIs. -For example, it may contain calls to pci_enable_msi_range() or -pci_enable_msix_range(). +For example, it may contain calls to pci_irq_alloc_vectors with the +PCI_IRQ_MSI or PCI_IRQ_MSIX flags. diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 50c5003..16dda43 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1109,23 +1109,15 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, } } -/** - * pci_enable_msi_range - configure device's MSI capability structure - * @dev: device to configure - * @minvec: minimal number of interrupts to configure - * @maxvec: maximum number of interrupts to configure - * - * This function tries to allocate a maximum possible number of interrupts in a - * range between @minvec and @maxvec. It returns a negative errno if an error - * occurs. If it succeeds, it returns the actual number of interrupts allocated - * and updates the @dev's irq member to the lowest new interrupt number; - * the other interrupt numbers allocated to this device are consecutive. - **/ -int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec) +/* deprecated, don't use */ +int pci_enable_msi(struct pci_dev *dev) { - return __pci_enable_msi_range(dev, minvec, maxvec, NULL); + int rc = __pci_enable_msi_range(dev, 1, 1, NULL); + if (rc < 0) + return rc; + return 0; } -EXPORT_SYMBOL(pci_enable_msi_range); +EXPORT_SYMBOL(pci_enable_msi); static int __pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec, @@ -1381,7 +1373,7 @@ int pci_msi_domain_check_cap(struct irq_domain *domain, { struct msi_desc *desc = first_pci_msi_entry(to_pci_dev(dev)); - /* Special handling to support pci_enable_msi_range() */ + /* Special handling to support __pci_enable_msi_range() */ if (pci_msi_desc_is_multi_msi(desc) && !(info->flags & MSI_FLAG_MULTI_PCI_MSI)) return 1; @@ -1394,7 +1386,7 @@ int pci_msi_domain_check_cap(struct irq_domain *domain, static int pci_msi_domain_handle_error(struct irq_domain *domain, struct msi_desc *desc, int error) { - /* Special handling to support pci_enable_msi_range() */ + /* Special handling to support __pci_enable_msi_range() */ if (pci_msi_desc_is_multi_msi(desc) && error == -ENOSPC) return 1; diff --git a/include/linux/pci.h b/include/linux/pci.h index e2d1a12..2159376 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1309,14 +1309,7 @@ void pci_msix_shutdown(struct pci_dev *dev); void pci_disable_msix(struct pci_dev *dev); void pci_restore_msi_state(struct pci_dev *dev); int pci_msi_enabled(void); -int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec); -static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) -{ - int rc = pci_enable_msi_range(dev, nvec, nvec); - if (rc < 0) - return rc; - return 0; -} +int pci_enable_msi(struct pci_dev *dev); int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec, int maxvec); static inline int pci_enable_msix_exact(struct pci_dev *dev, @@ -1347,10 +1340,7 @@ static inline void pci_msix_shutdown(struct pci_dev *dev) { } static inline void pci_disable_msix(struct pci_dev *dev) { } static inline void pci_restore_msi_state(struct pci_dev *dev) { } static inline int pci_msi_enabled(void) { return 0; } -static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec, - int maxvec) -{ return -ENOSYS; } -static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) +static inline int pci_enable_msi(struct pci_dev *dev) { return -ENOSYS; } static inline int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, int minvec, int maxvec) @@ -1426,8 +1416,6 @@ static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } static inline void pcie_ecrc_get_policy(char *str) { } #endif -#define pci_enable_msi(pdev) pci_enable_msi_exact(pdev, 1) - #ifdef CONFIG_HT_IRQ /* The functions a driver should call */ int ht_create_irq(struct pci_dev *dev, int idx);