diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 18:50:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 18:50:26 -0800 |
| commit | 7b67e751479d50b7f84d1a3cc5216eed5e534b66 (patch) | |
| tree | a1a6746857cf65f04dde739fe271bf4143d55eaf /drivers/pci/ats.c | |
| parent | cpu: Register a generic CPU device on architectures that currently do not (diff) | |
| parent | x86/PCI: Expand the x86_msi_ops to have a restore MSIs. (diff) | |
| download | linux-dev-7b67e751479d50b7f84d1a3cc5216eed5e534b66.tar.xz linux-dev-7b67e751479d50b7f84d1a3cc5216eed5e534b66.zip | |
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (80 commits)
x86/PCI: Expand the x86_msi_ops to have a restore MSIs.
PCI: Increase resource array mask bit size in pcim_iomap_regions()
PCI: DEVICE_COUNT_RESOURCE should be equal to PCI_NUM_RESOURCES
PCI: pci_ids: add device ids for STA2X11 device (aka ConneXT)
PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB
x86/PCI: amd: factor out MMCONFIG discovery
PCI: Enable ATS at the device state restore
PCI: msi: fix imbalanced refcount of msi irq sysfs objects
PCI: kconfig: English typo in pci/pcie/Kconfig
PCI/PM/Runtime: make PCI traces quieter
PCI: remove pci_create_bus()
xtensa/PCI: convert to pci_scan_root_bus() for correct root bus resources
x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus()
x86/PCI: use pci_scan_bus() instead of pci_scan_bus_parented()
x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan
sparc32, leon/PCI: convert to pci_scan_root_bus() for correct root bus resources
sparc/PCI: convert to pci_create_root_bus()
sh/PCI: convert to pci_scan_root_bus() for correct root bus resources
powerpc/PCI: convert to pci_create_root_bus()
powerpc/PCI: split PHB part out of pcibios_map_io_space()
...
Fix up conflicts in drivers/pci/msi.c and include/linux/pci_regs.h due
to the same patches being applied in other branches.
Diffstat (limited to 'drivers/pci/ats.c')
| -rw-r--r-- | drivers/pci/ats.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c index 9dd90b30f91a..95655d7c0d0b 100644 --- a/drivers/pci/ats.c +++ b/drivers/pci/ats.c @@ -128,6 +128,23 @@ void pci_disable_ats(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(pci_disable_ats); +void pci_restore_ats_state(struct pci_dev *dev) +{ + u16 ctrl; + + if (!pci_ats_enabled(dev)) + return; + if (!pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ATS)) + BUG(); + + ctrl = PCI_ATS_CTRL_ENABLE; + if (!dev->is_virtfn) + ctrl |= PCI_ATS_CTRL_STU(dev->ats->stu - PCI_ATS_MIN_STU); + + pci_write_config_word(dev, dev->ats->pos + PCI_ATS_CTRL, ctrl); +} +EXPORT_SYMBOL_GPL(pci_restore_ats_state); + /** * pci_ats_queue_depth - query the ATS Invalidate Queue Depth * @dev: the PCI device |