415e12b237
Move the evaluation of acpi_pci_osc_control_set() (to request control of PCI Express native features) into acpi_pci_root_add() to avoid calling it many times for the same root complex with the same arguments. Additionally, check if all of the requisite _OSC support bits are set before calling acpi_pci_osc_control_set() for a given root complex. References: https://bugzilla.kernel.org/show_bug.cgi?id=20232 Reported-by: Ozan Caglayan <ozan@pardus.org.tr> Tested-by: Ozan Caglayan <ozan@pardus.org.tr> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* File: portdrv.h
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* Purpose: PCI Express Port Bus Driver's Internal Data Structures
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*
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* Copyright (C) 2004 Intel
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* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
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*/
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#ifndef _PORTDRV_H_
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#define _PORTDRV_H_
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#include <linux/compiler.h>
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#define PCIE_PORT_DEVICE_MAXSERVICES 4
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/*
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* According to the PCI Express Base Specification 2.0, the indices of
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* the MSI-X table entires used by port services must not exceed 31
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*/
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#define PCIE_PORT_MAX_MSIX_ENTRIES 32
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#define get_descriptor_id(type, service) (((type - 4) << 4) | service)
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extern struct bus_type pcie_port_bus_type;
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extern int pcie_port_device_register(struct pci_dev *dev);
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#ifdef CONFIG_PM
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extern int pcie_port_device_suspend(struct device *dev);
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extern int pcie_port_device_resume(struct device *dev);
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#endif
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extern void pcie_port_device_remove(struct pci_dev *dev);
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extern int __must_check pcie_port_bus_register(void);
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extern void pcie_port_bus_unregister(void);
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struct pci_dev;
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extern void pcie_clear_root_pme_status(struct pci_dev *dev);
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#ifdef CONFIG_PCIE_PME
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extern bool pcie_pme_msi_disabled;
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static inline void pcie_pme_disable_msi(void)
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{
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pcie_pme_msi_disabled = true;
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}
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static inline bool pcie_pme_no_msi(void)
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{
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return pcie_pme_msi_disabled;
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}
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extern void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
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#else /* !CONFIG_PCIE_PME */
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static inline void pcie_pme_disable_msi(void) {}
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static inline bool pcie_pme_no_msi(void) { return false; }
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static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
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#endif /* !CONFIG_PCIE_PME */
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#ifdef CONFIG_ACPI
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extern int pcie_port_acpi_setup(struct pci_dev *port, int *mask);
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static inline int pcie_port_platform_notify(struct pci_dev *port, int *mask)
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{
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return pcie_port_acpi_setup(port, mask);
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}
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#else /* !CONFIG_ACPI */
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static inline int pcie_port_platform_notify(struct pci_dev *port, int *mask)
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{
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return 0;
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}
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#endif /* !CONFIG_ACPI */
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#endif /* _PORTDRV_H_ */
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