[PATCH 03/16] x86/xen/MSI: Use MSI controller framework to configure MSI/MSI-X irq
From: Yijing Wang <hidden>
Date: 2014-10-27 12:42:04
Also in:
linux-iommu, linux-mips, linux-pci, linuxppc-dev, lkml, sparclinux
Subsystem:
pci subsystem, the rest, x86 architecture (32-bit and 64-bit), xen pci subsystem · Maintainers:
Bjorn Helgaas, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, Juergen Gross
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 <redacted> CC: David Vrabel <redacted> CC: Konrad Rzeszutek Wilk <redacted> --- 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