| Message ID | 20151210195001.8111.55134.stgit@bhelgaas-glaptop2.roam.corp.google.com |
|---|---|
| State | Not Applicable |
| Headers | show |
Hi! > The SlotPowerLimit in the Slot Capability indicates how much power the slot > can supply to a downstream device. A Root Port or Switch Downstream Port > communicates the limit via a Set_Slot_Power_Limit Message on the link. The > component on the other end of the link copies the limit from the message to > the Captured Slot Power Limit in its Device Capability [see PCIe r3.0, sec > 2.2.8.5]. > > The Captured SlotPowerLimit is relevant for all devices on the downstream > end of a Link. This includes Endpoints and Bridges as well as > Switch Upstream Ports. > > Decode the DevCap Captured SlotPowerLimit for Endpoints and Bridges as well > as Switch Upstream Ports. Thanks, applied. Have a nice fortnight
diff --git a/ls-caps.c b/ls-caps.c index c145ed6..639f931 100644 --- a/ls-caps.c +++ b/ls-caps.c @@ -678,7 +678,8 @@ static void cap_express_dev(struct device *d, int where, int type) if ((type == PCI_EXP_TYPE_ENDPOINT) || (type == PCI_EXP_TYPE_LEG_END)) printf(" FLReset%c", FLAG(t, PCI_EXP_DEVCAP_FLRESET)); - if (type == PCI_EXP_TYPE_UPSTREAM) + if ((type == PCI_EXP_TYPE_ENDPOINT) || (type == PCI_EXP_TYPE_UPSTREAM) || + (type == PCI_EXP_TYPE_PCI_BRIDGE)) printf(" SlotPowerLimit %.3fW", power_limit((t & PCI_EXP_DEVCAP_PWR_VAL) >> 18, (t & PCI_EXP_DEVCAP_PWR_SCL) >> 26));
The SlotPowerLimit in the Slot Capability indicates how much power the slot can supply to a downstream device. A Root Port or Switch Downstream Port communicates the limit via a Set_Slot_Power_Limit Message on the link. The component on the other end of the link copies the limit from the message to the Captured Slot Power Limit in its Device Capability [see PCIe r3.0, sec 2.2.8.5]. The Captured SlotPowerLimit is relevant for all devices on the downstream end of a Link. This includes Endpoints and Bridges as well as Switch Upstream Ports. Decode the DevCap Captured SlotPowerLimit for Endpoints and Bridges as well as Switch Upstream Ports. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> --- ls-caps.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html