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PCI: Add Downstream Port Containment portdrv service type

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Add the Downstream Port Containment (PCIE_PORT_SERVICE_DPC) portdrv service
type, available if the device has the DPC extended capability.

[bhelgaas: split to separate patch, changelog]
Signed-off-by: Keith Busch <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
This commit is contained in:
Keith Busch 2016-05-02 15:10:31 -05:00 • committed by Bjorn Helgaas
commit 10126ac14d
5 changed files with 9 additions and 4 deletions
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2
drivers/pci/pcie/portdrv.h
View file

@ -11,7 +11,7 @@
#include <linux/compiler.h>
#define PCIE_PORT_DEVICE_MAXSERVICES 4
#define PCIE_PORT_DEVICE_MAXSERVICES 5
/*
* According to the PCI Express Base Specification 2.0, the indices of
* the MSI-X table entries used by port services must not exceed 31

2
drivers/pci/pcie/portdrv_acpi.c
View file

@ -51,7 +51,7 @@ int pcie_port_acpi_setup(struct pci_dev *port, int *srv_mask)
flags = root->osc_control_set;
*srv_mask = PCIE_PORT_SERVICE_VC;
*srv_mask = PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_DPC;
if (flags & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)
*srv_mask |= PCIE_PORT_SERVICE_HP;
if (flags & OSC_PCI_EXPRESS_PME_CONTROL)

4
drivers/pci/pcie/portdrv_core.c
View file

@ -262,7 +262,7 @@ static int get_port_device_capability(struct pci_dev *dev)
return 0;
cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP
| PCIE_PORT_SERVICE_VC;
| PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_DPC;
if (pci_aer_available())
cap_mask |= PCIE_PORT_SERVICE_AER;
@ -311,6 +311,8 @@ static int get_port_device_capability(struct pci_dev *dev)
*/
pcie_pme_interrupt_enable(dev, false);
}
if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC))
services |= PCIE_PORT_SERVICE_DPC;
return services;
}