diff options
| author | Myron Stowe <mstowe@redhat.com> | 2011-10-28 15:48:38 -0600 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-01-06 12:10:42 -0800 |
| commit | 96c5590058d7fded14f43af2ab521436cecf3125 (patch) | |
| tree | 673577f86b1ee8886c27cc86333fdfdc6cc783ac /include/linux/pci.h | |
| parent | 9cdce18d6f0baae53f012fb3f50e66e7ff24c509 (diff) | |
PCI: Pull PCI 'latency timer' setup up into the core
The 'latency timer' of PCI devices, both Type 0 and Type 1,
is setup in architecture-specific code [see: 'pcibios_set_master()'].
There are two approaches being taken by all the architectures - check
if the 'latency timer' is currently set between 16 and 255 and if not
bring it within bounds, or, do nothing (and then there is the
gratuitously different PA-RISC implementation).
There is nothing architecture-specific about PCI's 'latency timer' so
this patch pulls its setup functionality up into the PCI core by
creating a generic 'pcibios_set_master()' function using the '__weak'
attribute which can be used by all architectures as a default which,
if necessary, can then be over-ridden by architecture-specific code.
No functional change.
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 569341d2d527..4c16a5788998 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -795,8 +795,11 @@ static inline int pci_is_managed(struct pci_dev *pdev) } void pci_disable_device(struct pci_dev *dev); + +extern unsigned int pcibios_max_latency; void pci_set_master(struct pci_dev *dev); void pci_clear_master(struct pci_dev *dev); + int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); int pci_set_cacheline_size(struct pci_dev *dev); #define HAVE_PCI_SET_MWI |