From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [119.145.14.65]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id B259D1A0063 for ; Mon, 27 Oct 2014 23:43:57 +1100 (AEDT) From: Yijing Wang To: Bjorn Helgaas Subject: [PATCH 03/16] x86/xen/MSI: Use MSI controller framework to configure MSI/MSI-X irq Date: Mon, 27 Oct 2014 21:22:09 +0800 Message-ID: <1414416142-31239-4-git-send-email-wangyijing@huawei.com> In-Reply-To: <1414416142-31239-1-git-send-email-wangyijing@huawei.com> References: <1414416142-31239-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, Xinwei Hu , Yijing Wang , Thierry Reding , sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, Russell King , Joerg Roedel , x86@kernel.org, Sebastian Ott , xen-devel@lists.xenproject.org, Konrad Rzeszutek Wilk , Chris Metcalf , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Thomas Petazzoni , Tony Luck , Sergei Shtylyov , linux-kernel@vger.kernel.org, Ralf Baechle , iommu@lists.linux-foundation.org, David Vrabel , Wuyun , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , Lucas Stach List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Use MSI controller framework instead of arch MSI functions to configure MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework. Signed-off-by: Yijing Wang CC: David Vrabel CC: Konrad Rzeszutek Wilk --- arch/x86/pci/xen.c | 45 +++++++++++++++++++++++++++------------------ 1 files changed, 27 insertions(+), 18 deletions(-) diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 466b978..83d8d50 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -157,7 +157,8 @@ static int acpi_register_gsi_xen(struct device *dev, u32 gsi, struct xen_pci_frontend_ops *xen_pci_frontend; EXPORT_SYMBOL_GPL(xen_pci_frontend); -static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +static int xen_setup_msi_irqs(struct msi_controller *ctrl, + struct pci_dev *dev, int nvec, int type) { int irq, ret, i; struct msi_desc *msidesc; @@ -219,7 +220,8 @@ static void xen_msi_compose_msg(struct pci_dev *pdev, unsigned int pirq, msg->data = XEN_PIRQ_MSI_DATA; } -static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +static int xen_hvm_setup_msi_irqs(struct msi_controller *ctrl, + struct pci_dev *dev, int nvec, int type) { int irq, pirq; struct msi_desc *msidesc; @@ -267,7 +269,8 @@ error: #ifdef CONFIG_XEN_DOM0 static bool __read_mostly pci_seg_supported = true; -static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +static int xen_initdom_setup_msi_irqs(struct msi_controller *ctrl, + struct pci_dev *dev, int nvec, int type) { int ret = 0; struct msi_desc *msidesc; @@ -349,7 +352,8 @@ out: return ret; } -static void xen_initdom_restore_msi_irqs(struct pci_dev *dev) +static void xen_initdom_restore_msi_irqs(struct msi_controller *ctrl, + struct pci_dev *dev) { int ret = 0; @@ -376,7 +380,13 @@ static void xen_initdom_restore_msi_irqs(struct pci_dev *dev) } #endif -static void xen_teardown_msi_irqs(struct pci_dev *dev) +static void xen_teardown_msi_irq(struct msi_controller *ctrl, unsigned int irq) +{ + xen_destroy_irq(irq); +} + +static void xen_teardown_msi_irqs(struct msi_controller *ctrl, + struct pci_dev *dev) { struct msi_desc *msidesc; @@ -390,11 +400,7 @@ static void xen_teardown_msi_irqs(struct pci_dev *dev) default_teardown_msi_irqs(dev); } -static void xen_teardown_msi_irq(unsigned int irq) -{ - xen_destroy_irq(irq); -} - +struct msi_controller xen_msi_ctrl; #endif int __init pci_xen_init(void) @@ -415,9 +421,10 @@ int __init pci_xen_init(void) #endif #ifdef CONFIG_PCI_MSI - x86_msi.setup_msi_irqs = xen_setup_msi_irqs; - x86_msi.teardown_msi_irq = xen_teardown_msi_irq; - x86_msi.teardown_msi_irqs = xen_teardown_msi_irqs; + xen_msi_ctrl.setup_irqs = xen_setup_msi_irqs; + xen_msi_ctrl.teardown_irq = xen_teardown_msi_irq; + xen_msi_ctrl.teardown_irqs = xen_teardown_msi_irqs; + x86_msi_ctrl = &xen_msi_ctrl; pci_msi_ignore_mask = 1; #endif return 0; @@ -437,8 +444,9 @@ int __init pci_xen_hvm_init(void) #endif #ifdef CONFIG_PCI_MSI - x86_msi.setup_msi_irqs = xen_hvm_setup_msi_irqs; - x86_msi.teardown_msi_irq = xen_teardown_msi_irq; + xen_msi_ctrl.setup_irqs = xen_hvm_setup_msi_irqs; + xen_msi_ctrl.teardown_irq = xen_teardown_msi_irq; + x86_msi_ctrl = &xen_msi_ctrl; #endif return 0; } @@ -495,9 +503,10 @@ int __init pci_xen_initial_domain(void) int irq; #ifdef CONFIG_PCI_MSI - x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs; - x86_msi.teardown_msi_irq = xen_teardown_msi_irq; - x86_msi.restore_msi_irqs = xen_initdom_restore_msi_irqs; + xen_msi_ctrl.setup_irqs = xen_initdom_setup_msi_irqs; + xen_msi_ctrl.teardown_irq = xen_teardown_msi_irq; + xen_msi_ctrl.restore_irqs = xen_initdom_restore_msi_irqs; + x86_msi_ctrl = &xen_msi_ctrl; pci_msi_ignore_mask = 1; #endif xen_setup_acpi_sci(); -- 1.7.1