/* * PCIe Port Native Services Support, ACPI-Related Part * * Copyright (C) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. * * This file is subject to the terms and conditions of the GNU General Public * License V2. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/pci.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/acpi.h> #include <linux/pci-acpi.h> #include <linux/pcieport_if.h> #include "aer/aerdrv.h" #include "../pci.h" #include "portdrv.h" /** * pcie_port_acpi_setup - Request the BIOS to release control of PCIe services. * @port: PCIe Port service for a root port or event collector. * @srv_mask: Bit mask of services that can be enabled for @port. * * Invoked when @port is identified as a PCIe port device. To avoid conflicts * with the BIOS PCIe port native services support requires the BIOS to yield * control of these services to the kernel. The mask of services that the BIOS * allows to be enabled for @port is written to @srv_mask. * * NOTE: It turns out that we cannot do that for individual port services * separately, because that would make some systems work incorrectly. */
void pcie_port_acpi_setup(struct pci_dev *port, int *srv_mask) { struct acpi_pci_root *root; acpi_handle handle; u32 flags; if (acpi_pci_disabled) return; handle = acpi_find_root_bridge_handle(port); if (!handle) return; root = acpi_pci_find_root(handle); if (!root) return; flags = root->osc_control_set; *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) *srv_mask |= PCIE_PORT_SERVICE_PME; if (flags & OSC_PCI_EXPRESS_AER_CONTROL) *srv_mask |= PCIE_PORT_SERVICE_AER; }Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| rafael j. wysocki | rafael j. wysocki | 96 | 94.12% | 2 | 50.00% |
| jon derrick | jon derrick | 4 | 3.92% | 1 | 25.00% |
| keith busch | keith busch | 2 | 1.96% | 1 | 25.00% |
| Total | 102 | 100.00% | 4 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp | |
| rafael j. wysocki | rafael j. wysocki | 122 | 93.13% | 2 | 40.00% |
| jon derrick | jon derrick | 4 | 3.05% | 1 | 20.00% |
| andy shevchenko | andy shevchenko | 3 | 2.29% | 1 | 20.00% |
| keith busch | keith busch | 2 | 1.53% | 1 | 20.00% |
| Total | 131 | 100.00% | 5 | 100.00% |