PCI: add OBFF enable/disable support

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OBFF (optimized buffer flush/fill), where supported, can help improve
energy efficiency by giving devices information about when interrupts
and other activity will have a reduced power impact.  It requires
support from both the device and system (i.e. not only does the device
need to respond to OBFF messages, but the platform must be capable of
generating and routing them to the end point).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

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Jesse Barnes 2011-01-10 12:46:36 -08:00

parent b48d4425b6

commit 48a92a8179

3 changed files with 114 additions and 0 deletions

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92

drivers/pci/pci.c

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16

include/linux/pci.h

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6

include/linux/pci_regs.h

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