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Message-ID: <51F7208D.60604@oracle.com>
Date: Tue, 30 Jul 2013 10:10:21 +0800
From: Zhenzhong Duan <zhenzhong.duan@...cle.com>
To: linux-pci@...r.kernel.org,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
xen-devel <xen-devel@...ts.xen.org>
CC: bhelgaas@...gle.com,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Feng Jin <joe.jin@...cle.com>,
"x86@...nel.org" <x86@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 3/3 v2] Update x86_msi.restore_msi_irqs API param
Change x86_msi.restore_msi_irqs(struct pci_dev *dev, int irq) to
x86_msi.restore_msi_irqs(struct pci_dev *dev)
>From its naming, restore_msi_irqs is used to restore multiple msix irqs,
param 'int irq' is unneeded. This could make code looks consistent in vm
and bare metal.
Dom0 msix restore code could be optimized a bit with this change.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...cle.com>
---
arch/x86/include/asm/pci.h | 8 ++++----
arch/x86/include/asm/x86_init.h | 2 +-
arch/x86/pci/xen.c | 2 +-
drivers/pci/msi.c | 17 ++++++++++++-----
4 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index d9e9e6c..40cbea4 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -115,9 +115,9 @@ static inline void x86_teardown_msi_irq(unsigned int irq)
{
x86_msi.teardown_msi_irq(irq);
}
-static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
+static inline void x86_restore_msi_irqs(struct pci_dev *dev)
{
- x86_msi.restore_msi_irqs(dev, irq);
+ x86_msi.restore_msi_irqs(dev);
}
#define arch_setup_msi_irqs x86_setup_msi_irqs
#define arch_teardown_msi_irqs x86_teardown_msi_irqs
@@ -127,14 +127,14 @@ static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq)
struct msi_desc;
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void native_teardown_msi_irq(unsigned int irq);
-void native_restore_msi_irqs(struct pci_dev *dev, int irq);
+void native_restore_msi_irqs(struct pci_dev *dev);
int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
unsigned int irq_base, unsigned int irq_offset);
/* default to the implementation in drivers/lib/msi.c */
#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
#define HAVE_DEFAULT_MSI_RESTORE_IRQS
void default_teardown_msi_irqs(struct pci_dev *dev);
-void default_restore_msi_irqs(struct pci_dev *dev, int irq);
+void default_restore_msi_irqs(struct pci_dev *dev);
#else
#define native_setup_msi_irqs NULL
#define native_teardown_msi_irq NULL
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 828a156..f58a9c7 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -180,7 +180,7 @@ struct x86_msi_ops {
u8 hpet_id);
void (*teardown_msi_irq)(unsigned int irq);
void (*teardown_msi_irqs)(struct pci_dev *dev);
- void (*restore_msi_irqs)(struct pci_dev *dev, int irq);
+ void (*restore_msi_irqs)(struct pci_dev *dev);
int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
};
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 48e8461..cdd869f 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -337,7 +337,7 @@ out:
return ret;
}
-static void xen_initdom_restore_msi_irqs(struct pci_dev *dev, int irq)
+static void xen_initdom_restore_msi_irqs(struct pci_dev *dev)
{
int ret = 0;
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 922fb49..d4ccfeb 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -214,7 +214,7 @@ void unmask_msi_irq(struct irq_data *data)
#endif /* CONFIG_GENERIC_HARDIRQS */
#ifdef HAVE_DEFAULT_MSI_RESTORE_IRQS
-void default_restore_msi_irqs(struct pci_dev *dev, int irq)
+static void default_restore_msi_irq(struct pci_dev *dev, int irq)
{
int pos;
u16 control;
@@ -244,6 +244,15 @@ void default_restore_msi_irqs(struct pci_dev *dev, int irq)
}
}
}
+
+void default_restore_msi_irqs(struct pci_dev *dev)
+{
+ struct msi_desc *entry;
+
+ list_for_each_entry(entry, &dev->msi_list, list) {
+ default_restore_msi_irq(dev, entry->irq);
+ }
+}
#endif
void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
@@ -416,7 +425,7 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
pci_intx_for_msi(dev, 0);
msi_set_enable(dev, 0);
- arch_restore_msi_irqs(dev, dev->irq);
+ arch_restore_msi_irqs(dev);
pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
control &= ~PCI_MSI_FLAGS_QSIZE;
@@ -440,9 +449,7 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
control |= PCI_MSIX_FLAGS_ENABLE | PCI_MSIX_FLAGS_MASKALL;
pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
- list_for_each_entry(entry, &dev->msi_list, list) {
- arch_restore_msi_irqs(dev, entry->irq);
- }
+ arch_restore_msi_irqs(dev);
control &= ~PCI_MSIX_FLAGS_MASKALL;
pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, control);
--
1.7.3
--
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