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Merge branch 'pci/misc' into next

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* pci/misc:
  PCI: Enable upstream bridges even for VFs on virtual buses
  PCI: Add pci_upstream_bridge()
  PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()
This commit is contained in:
Bjorn Helgaas
2013-11-07 15:02:04 -07:00
parent c245f24220 79272138bd
commit eaaeb1cb33
7 changed files with 60 additions and 12 deletions
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drivers/pci/msi.c
+16 -6
View File
@@ -185,7 +185,7 @@ static inline __attribute_const__ u32 msi_enabled_mask(u16 control)
* reliably as devices without an INTx disable bit will then generate a
* level IRQ which will never be cleared.
*/
static u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
{
u32 mask_bits = desc->masked;
@@ -199,9 +199,14 @@ static u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
return mask_bits;
}
__weak u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
{
return default_msi_mask_irq(desc, mask, flag);
}
static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
{
desc->masked = __msi_mask_irq(desc, mask, flag);
desc->masked = arch_msi_mask_irq(desc, mask, flag);
}
/*
@@ -211,7 +216,7 @@ static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
* file. This saves a few milliseconds when initialising devices with lots
* of MSI-X interrupts.
*/
static u32 __msix_mask_irq(struct msi_desc *desc, u32 flag)
u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag)
{
u32 mask_bits = desc->masked;
unsigned offset = desc->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE +
@@ -224,9 +229,14 @@ static u32 __msix_mask_irq(struct msi_desc *desc, u32 flag)
return mask_bits;
}
__weak u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag)
{
return default_msix_mask_irq(desc, flag);
}
static void msix_mask_irq(struct msi_desc *desc, u32 flag)
{
desc->masked = __msix_mask_irq(desc, flag);
desc->masked = arch_msix_mask_irq(desc, flag);
}
static void msi_set_mask_bit(struct irq_data *data, u32 flag)
@@ -902,7 +912,7 @@ void pci_msi_shutdown(struct pci_dev *dev)
pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &ctrl);
mask = msi_capable_mask(ctrl);
/* Keep cached state to be restored */
__msi_mask_irq(desc, mask, ~mask);
arch_msi_mask_irq(desc, mask, ~mask);
/* Restore dev->irq to its default pin-assertion irq */
dev->irq = desc->msi_attrib.default_irq;
@@ -998,7 +1008,7 @@ void pci_msix_shutdown(struct pci_dev *dev)
/* Return the device with MSI-X masked as initial states */
list_for_each_entry(entry, &dev->msi_list, list) {
/* Keep cached states to be restored */
__msix_mask_irq(entry, 1);
arch_msix_mask_irq(entry, 1);
}
msix_set_enable(dev, 0);
drivers/pci/pci.c
+8 -5
View File
@@ -1148,12 +1148,12 @@ int pci_reenable_device(struct pci_dev *dev)
static void pci_enable_bridge(struct pci_dev *dev)
{
struct pci_dev *bridge;
int retval;
if (!dev)
return;
pci_enable_bridge(dev->bus->self);
bridge = pci_upstream_bridge(dev);
if (bridge)
pci_enable_bridge(bridge);
if (pci_is_enabled(dev)) {
if (!dev->is_busmaster)
@@ -1170,6 +1170,7 @@ static void pci_enable_bridge(struct pci_dev *dev)
static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
{
struct pci_dev *bridge;
int err;
int i, bars = 0;
@@ -1188,7 +1189,9 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
if (atomic_inc_return(&dev->enable_cnt) > 1)
return 0; /* already enabled */
pci_enable_bridge(dev->bus->self);
bridge = pci_upstream_bridge(dev);
if (bridge)
pci_enable_bridge(bridge);
/* only skip sriov related */
for (i = 0; i <= PCI_ROM_RESOURCE; i++)