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PCI: Drop "irq" param from *_restore_msi_irqs() 

Change x86_msi.restore_msi_irqs(struct pci_dev *dev, int irq) to
x86_msi.restore_msi_irqs(struct pci_dev *dev).

restore_msi_irqs() restores multiple MSI-X IRQs, so param 'int irq' is
unneeded.  This makes code more consistent between vm and bare metal.

Dom0 MSI-X restore code can also be optimized as XEN only has a hypercall
to restore all MSI-X vectors at one time.

Tested-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
DuanZhenzhong 2013-12-04 13:09:16 +08:00 committed by Bjorn Helgaas
parent 6f825b73e2
commit ac8344c4c0
6 changed files with 21 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/pci.h
View File

@ -104,7 +104,7 @@ extern void pci_iommu_alloc(void);
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);
#else

2
arch/x86/include/asm/x86_init.h
View File

@ -181,7 +181,7 @@ 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);
u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);

4
arch/x86/kernel/x86_init.c
View File

@ -136,9 +136,9 @@ void arch_teardown_msi_irq(unsigned int irq)
x86_msi.teardown_msi_irq(irq);
}
void arch_restore_msi_irqs(struct pci_dev *dev, int irq)
void arch_restore_msi_irqs(struct pci_dev *dev)
{
x86_msi.restore_msi_irqs(dev, irq);
x86_msi.restore_msi_irqs(dev);
}
u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
{

2
arch/x86/pci/xen.c
View File

@ -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;

19
drivers/pci/msi.c
View File

@ -116,7 +116,7 @@ void __weak arch_teardown_msi_irqs(struct pci_dev *dev)
return default_teardown_msi_irqs(dev);
}
void default_restore_msi_irqs(struct pci_dev *dev, int irq)
static void default_restore_msi_irq(struct pci_dev *dev, int irq)
{
struct msi_desc *entry;
@ -134,9 +134,9 @@ void default_restore_msi_irqs(struct pci_dev *dev, int irq)
write_msi_msg(irq, &entry->msg);
}
void __weak arch_restore_msi_irqs(struct pci_dev *dev, int irq)
void __weak arch_restore_msi_irqs(struct pci_dev *dev)
{
return default_restore_msi_irqs(dev, irq);
return default_restore_msi_irqs(dev);
}
static void msi_set_enable(struct pci_dev *dev, int enable)
@ -262,6 +262,15 @@ void unmask_msi_irq(struct irq_data *data)
msi_set_mask_bit(data, 0);
}
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);
}
}
void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
BUG_ON(entry->dev->current_state != PCI_D0);
@ -430,7 +439,7 @@ 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);
msi_mask_irq(entry, msi_capable_mask(control), entry->masked);
@ -455,8 +464,8 @@ 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);
arch_restore_msi_irqs(dev);
list_for_each_entry(entry, &dev->msi_list, list) {
arch_restore_msi_irqs(dev, entry->irq);
msix_mask_irq(entry, entry->masked);
}

4
include/linux/msi.h
View File

@ -60,10 +60,10 @@ void arch_teardown_msi_irq(unsigned int irq);
int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void arch_teardown_msi_irqs(struct pci_dev *dev);
int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
void arch_restore_msi_irqs(struct pci_dev *dev, int irq);
void arch_restore_msi_irqs(struct pci_dev *dev);
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);
u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag);