On Friday 21 August 2009, Shaohua Li wrote: > On Fri, Aug 21, 2009 at 05:22:02AM +0800, Rafael J. Wysocki wrote: > > On Wednesday 19 August 2009, Shaohua Li wrote: > > > > > > PCIe defines a native PME detection mechanism. When a PCIe endpoint > > > invokes PME, PCIe root port has a set of regisets to detect the > > > endpoint's bus/device/function number and root port will send out > > > interrupt when PME is received. After getting interrupt, OS can identify > > > which device invokes PME according to such information. See PCIe > > > spec for detail. This patch implements this feature. > > > > > > --- > > > drivers/pci/pcie/Kconfig | 7 + > > > drivers/pci/pcie/Makefile | 2 > > > drivers/pci/pcie/npme.c | 300 ++++++++++++++++++++++++++++++++++++++++++++++ > > > include/linux/pci_regs.h | 1 > > > 4 files changed, 310 insertions(+) > > > > > > Index: linux/drivers/pci/pcie/Kconfig > > > =================================================================== > > > --- linux.orig/drivers/pci/pcie/Kconfig 2009-08-19 13:43:18.000000000 +0800 > > > +++ linux/drivers/pci/pcie/Kconfig 2009-08-19 14:34:00.000000000 +0800 > > > @@ -46,3 +46,10 @@ config PCIEASPM_DEBUG > > > help > > > This enables PCI Express ASPM debug support. It will add per-device > > > interface to control ASPM. > > > + > > > +config PCIENPME > > > + bool "PCIE Native PME support(Experimental)" > > > + depends on PCIEPORTBUS && EXPERIMENTAL > > > + help > > > + This enables PCI Express Native PME Reporting. > > > > I don't really think we need that. Or maybe. But I'd prefer to call it > > PCIE_PME. > It definitely is required if you ever looked at PCIe spec. > In my test machine, the e1000 card can send such event, and the root port can > collect it. I meant the CONFIG switch, not the feature. :-) Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
