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author | Bjorn Helgaas <bhelgaas@google.com> | 2013-11-07 15:02:04 -0700 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-11-07 15:02:04 -0700 |
commit | eaaeb1cb33310dea6c3fa45d8bfc63e5a1d0a846 (patch) | |
tree | a76b60ff193a29b521e1bd63943a6d1969fe9af4 /drivers | |
parent | c245f2422031fec447e4d9e35fb0ef0fd5e42ab9 (diff) | |
parent | 79272138bd5c35edb9be5ae7b473a2741751a706 (diff) | |
download | op-kernel-dev-eaaeb1cb33310dea6c3fa45d8bfc63e5a1d0a846.zip op-kernel-dev-eaaeb1cb33310dea6c3fa45d8bfc63e5a1d0a846.tar.gz |
Merge branch 'pci/misc' into next
* 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()
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pci/msi.c | 22 | ||||
-rw-r--r-- | drivers/pci/pci.c | 13 |
2 files changed, 24 insertions, 11 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 604265c..5e63645 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -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); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e485d92..b127fbda 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -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++) |